• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    The invention relates to a mechanical component, a mechanism module, a movement and a timepiece having a better ability to retain the oil. The mechanical component 10 comprises: a first component 1 having a first surface area (7a); a second component 2 having a second surface area (4a) on which the first surface area 7a can slide; and an oil retaining film (11, 12) formed on at least one receiving zone selected from the first and second surface areas (7a) and (4a), said oil retaining film (11, 12) being more lipophilic than the reception area.
    公开号:CH713426A2
    申请号:CH00159/18
    申请日:2018-02-09
    公开日:2018-08-15
    发明作者:Nakamura Takahiko；Ebihara Natsuki
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    Description
    BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mechanical component, a mechanism module, a movement and a timepiece. 2. Description of the Related Art [0002] In a mechanical component, for example used in a timepiece, it is necessary for a portion intended to slide to retain the lubricating oil so that the wear due to it is reduced. friction caused by sliding during a rotation or the like. Patent Document 1 (JP-A-2001-288452) discloses a technique in which a film having a repellent effect on the oil is formed outside the region provided with oil or the like, thereby retaining the oil lubricant in this region.
    [0003] On a small mechanical component such as a timepiece component, it is difficult to form a repellent film for the oil only at a specific region, so that it is not not easy to implement the technique mentioned above. In view of this, a surface treatment is performed on the entire component with a fluorine active agent and the lubricating oil is retained at the lubricated location by the surface tension of the treated surface.
    However, the ability of the mechanical component to retain the lubricating oil can not be considered sufficient. As a result, there is the possibility that the mechanical component suffers from wear due to insufficient lubricating oil.
    SUMMARY OF THE INVENTION
    An object of a mode of the present invention is to provide a mechanical component, a mechanism module, a movement and a timepiece better in terms of the ability to retain the lubricating oil.
    According to a mode of the present invention, there is provided a mechanical component comprising: a first component having a first surface area (first area of a surface); a second component having a second surface area (second area of a surface) on which the first surface area can slide; and an oil retaining film formed on at least one receiving zone selected from the first and second surface areas, the oil retaining film being more lipophilic than the receiving zone.
    In this constitution, the lubricating oil does not flow easily out of the region between the first component and the second component. Therefore, it is possible to maintain the state in which lubricating oil is present between the first component and the second component, so that it is possible to avoid deterioration of the first component and the second component by wear. or the like, which provides stable operation over a long period of time.
    In the mechanical component, it is desirable to form, on the region adjacent to the oil retaining film on at least one of the first and second components, an oil-repellent film, which is less lipophilic than the reception area.
    With this constitution, the lubricating oil flows easily out of the surface of the oil retaining film. Therefore, it is possible to further improve the ability to retain the oil.
    It is desirable for the oil retaining film to contain a chemical compound defined by the following formula (1):
    Yi
    I R-M1-Z1 ... (1)
    I
    Where M-ι is one of Si, Ti and Zr, where R is a hydrocarbon radical, where ΥΊ and Y2 are hydrocarbon radicals, hydroxyl groups or functional groups producing hydroxyl groups by hydrolysis or the like, and where Z1 is a polar group.
    With this constitution, it is possible to confer, to the oil retaining film, a high capacity to retain the oil. It is desirable for the oil-repellent film to contain a chemical compound defined by the following formula (2): γ3
    I pf-Mz-Zz ... (2)
    Wherein Μ2 is one of Si, Ti and Zr, where Rf is a fluorine-containing radical, wherein Y3 and Y4 are hydrocarbon radicals, hydroxyl groups or functional groups producing hydroxyl groups by hydrolysis or the like, and wherein Z2 is a polar group.
    With this constitution, it is possible to increase the ability to repel the oil repellent film for the oil.
    It is desirable that the first component is a shaft body, rotatable on an axis, and that the second component is a bearing by which the shaft body is supported so as to be rotatable.
    With this constitution, thanks to the oil retaining film, it is easy to maintain the state in which there is lubricating oil between the first component and the second component, which stabilizes the operation. of the mechanical component over a long period of time.
    In the mechanical component, a retaining portion capable of retaining the lubricating oil may be formed in at least one of the first and second surface areas.
    With this constitution, even in the case where the oil retaining film of the receiving zone is worn by sliding, it is possible to retain the lubricating oil, which makes it possible to obtain stable operation on a long period of time.
    It is desirable that the retaining portion is a hollow formed in the receiving zone.
    With this constitution, even in the case where the oil retaining film of the receiving zone is worn by sliding, the oil retaining film present in the retaining portion is not easily worn. Therefore, the mechanical component can retain the lubricating oil, which allows stable operation over a long period of time.
    According to a mode of the present invention, there is provided a mechanism module, which comprises the mechanical component.
    With this constitution, thanks to the provision of the mechanical component, it is possible to obtain stable operation over a long period of time, which allows to achieve a progress in terms of reliability.
    According to a mode of the present invention, there is provided a movement, comprising the mechanical component.
    With this constitution, thanks to the provision of the mechanical component, it is possible to obtain stable operation over a long period of time, which allows to achieve a progress in terms of reliability.
    According to a mode of the present invention, there is provided a timepiece, including the movement.
    With this constitution, thanks to the provision of the mechanical component, it is possible to obtain stable operation over a long period of time, which allows to achieve a progress in terms of reliability.
    According to a mode of the present invention, it is possible to produce a capacity to retain the oil, especially the lubricating oil.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [0028]
    Fig. 1 is a sectional view of a mode of a mechanical component according to a first embodiment of the present invention.
    Fig. 2 is a partial and enlarged sectional view of the mechanical component shown in FIG. 1.
    Fig. 3 is a sectional view of another embodiment of the mechanical component shown in FIG. 1.
    Fig. 4 is a sectional view of yet another embodiment of the mechanical component shown in FIG. 1.
    Fig. 5 is a sectional view of a mode of a mechanical component according to a second embodiment of the present invention.
    Fig. 6 is a sectional view of another embodiment of the mechanical component shown in FIG. 5.
    Fig. 7 is a sectional view of yet another embodiment of the mechanical component shown in FIG. 5.
    Fig. 8 is a sectional view of a mechanical component according to a third embodiment of the present invention.
    Fig. 9 is a sectional view of a mechanical component according to a fourth embodiment of the present invention.
    Fig. 10 is a side view of a mechanical component according to a fifth embodiment of the present invention.
    Fig. 11 is a side view of a mechanical component shown in the state preceding the formation of an oil retaining film and an oil repellent film.
    Fig. 12 is a side view of the mechanical component on which the oil retaining film has been formed.
    Fig. 13 is a plan view, from the front, of a movement that can employ a mechanical component according to one embodiment.
    Fig. 14 is a plan view of a first component of a mechanical component according to a sixth embodiment of the present invention.
    Fig. 15 is a plan view of a second component of a mechanical component according to the sixth embodiment.
    Fig. 16 is a perspective view and a sectional view of a portion of a mechanical component according to a seventh embodiment of the present invention.
    Fig. 17 is a section of a portion of a movement employing a mechanical component according to an eighth embodiment of the present invention.
    Fig. 18 is a schematic view showing a first variant of a shaft body of the mechanical component shown in FIG. 1.
    Fig. 19 is a schematic view showing a second variant of the shaft body of the mechanical component shown in FIG. 1.
    Fig. 20 is a schematic view showing a third variant of the shaft body of the mechanical component shown in FIG. 1.
    Fig. 21 is a schematic view showing a fourth variant of the shaft body of the mechanical component shown in FIG. 1.
    Fig. 22 is a schematic view showing a fifth variant of the shaft body of the mechanical component shown in FIG. 1.
    Fig. 23 is a schematic view showing a sixth variant of the shaft body of the mechanical component shown in FIG. 1.
    Fig. 24 is a schematic view showing a seventh variant of the shaft body of the mechanical component shown in FIG. 1.
    Fig. 25 is a schematic view showing an eighth variant of the shaft body of the mechanical component shown in FIG. 1.
    Fig. 26 is a schematic view showing a ninth variant of the shaft body of the mechanical component shown in FIG. 1.
    Fig. 27 is a shape diagram showing a first variant of the escapement wheel shown in FIG. 14.
    Fig. 28 is a shape diagram showing a second variant of the escapement wheel shown in FIG. 14.
    Fig. 29 is a schematic diagram showing a first example of the overall pattern of a trough.
    Fig. 30 is a schematic diagram showing a second example of the overall pattern of a trough.
    Fig. 31 is a schematic diagram showing a third example of the overall pattern of a trough.
    Fig. 32 is a schematic diagram showing a fourth example of the overall pattern of a trough.
    Fig. 33 is a schematic diagram showing a fifth example of the overall pattern of a trough.
    Fig. 34 is a schematic diagram showing a sixth example of the overall pattern of a trough.
    Fig. 35 is a shape diagram showing a first variant of a pallet shown in FIG. 15.
    Fig. 36 is a shape diagram showing a second variant of the pallet shown in FIG. 15.
    DESCRIPTION OF THE EMBODIMENTS
    Embodiments of the present invention will be described with reference to the drawings.
    First Embodiment [0030] A timepiece component 10 (corresponding to what is called a mechanical component in the appended claims) will be described according to a first embodiment of the present invention, with reference to FIGS. 1 to 4.
    FIG. 1 is a sectional view of a mode of the timepiece component 10. FIG. 2 is an enlarged sectional view of a part of the timepiece component 10. FIG. 2 is an enlargement of the portion delimited by a circle in FIG. 1. FIG. 3 is a sectional view of another embodiment of the timepiece component 10. FIG. 4 is a sectional view of yet another mode of the timepiece component 10. A plan view is a view obtained by looking in a direction parallel to the central axis of the shaft body.
    Mechanical component [0032] As shown in FIGS. 1 and 2, the timepiece component 10 comprises a shaft body 1 (corresponding to what is referred to as the first component in the appended claims), a bearing 2 (corresponding to what is referred to as the second component in the appended claims) as well as a first oil retaining film 11, a second oil retaining film 12 and a third oil retaining film 13.
    The shaft body 1 has a columnar shape 1. The distal end of the shaft body 1 is called a pivot 3. The portion of the pivot 3 inserted in a through hole 4 of a hole stone 5 is called the inserted portion 7. The symbol C1 designates the central axis of the pivot 3. The shaft body 1 is the shaft of a rotating body such as a movement barrel, a center mobile, a moving average, a mobile seconds, an escape wheel, an anchor, a sprung balance, a counter part and a sliding mechanism.
    The bearing 2 comprises the hole stone 5 having the through hole 4, and a counter-pivot stone 6 (or stone forming a lid). For example, the bearing 2 is an anti-vibration bearing.
    The hole stone 5 is made, for example, of ruby. The hole stone 5 has, for example, a circular shape in a plan view.
    The through hole 4 is made to extend through the hole stone 5, in the direction of the thickness. For example, the through hole 4 has a circular shape, according to a plan view. The inner diameter of the through hole 4 is chosen to allow the insertion of the pivot 3. For example, the inner diameter of the through hole 4 is greater than the outside diameter of the pivot 3. A peripheral inner wall 4a (corresponding to this which is called the second surface area in the appended claims) of the through-hole 4 is an area which extends over the entire periphery of the through hole 4. The peripheral inner wall 4a (corresponding to what is called the second surface area in the appended claims) of the through hole 4 is opposite the outer peripheral surface 7a (corresponding to what is called the first surface area in the appended claims) of the inserted portion 7.
    The counter-pivot stone 6 is made, for example, of ruby. The counter pivot stone 6 has, for example, a circular shape in a plan view. A distal end terminal surface 3a of the pivot 3 is disposed opposite a surface facing the counter-pivoting stone 6a (the surface facing the hole stone 5). The portion of the facing surface 6a facing the internal space 4b of the through hole 4 is referred to as the facing area 6b. For example, in a plan view, the facing area 6b has a circular shape coinciding with the through hole 4. The distal end terminal surface 3a of the pivot 3 can be made to come into contact with the facing area 6b.
    The bearing 2 supports the shaft body 1 so that it is rotatable on the center axis C1.
    Oil Retaining Film [0039] The first oil retaining film 11 is formed on the distal end terminal surface 3a of the pivot 3 and on the outer peripheral surface 7a of the inserted portion 7. The first retaining film oil 11 is more lipophilic than the receiving surfaces (the distal end terminal surface 3a and the outer peripheral surface 7a). The second film
    The second oil retaining film 12 is formed on the inner peripheral wall 4a of the through hole 4 of the hole stone 5. The second oil retaining film 12 is more lipophilic than the receiving surface (the inner peripheral wall 4a).
    The third oil retaining film 13 is formed on the facing zone 6b of the counter-pivot stone 6. The third oil retaining film 13 is more lipophilic than the receiving surface (the zone facing 6b).
    An example of an index of the lipophilic property is constituted by the angle of contact with the oil. For example, the contact angle can be evaluated by depositing a drop of about 2 μl of oleic acid on the surface of an object to be measured and measuring the angle of the drop with respect to the surface of the object to be measured, by means of a contact angle measuring device (CA-X200, manufactured by Kyowa Interface Science Co., Ltd.), ten seconds after the deposition of the drop, at room temperature (approximately 25 ° C. ). The contact angle can be measured using the intended lubricating oil (e.g., poly-α-olefin (PAO)), instead of oleic acid. A method according to JIS R3257 can be used for the measurement of the contact angle.
    When the contact angle on the surface of the retaining films 11 to 13 is smaller than the contact angle on the receiving surface, the oil retaining films 11 to 13 can be considered as being more lipophilic as the receiving surface. For example, the oil retaining films 11 to 13 are made of a material having a higher surface energy than the material defining the receiving surface.
    For example, the oil retaining films 11 to 13 contain a chemical compound defined by the following formula (3):
    ... (3) [0044] (M-1 is one of the elements Si, Ti, and Zr, R is a hydrocarbon radical, ΥΊ and Y2 are hydrocarbon radicals, hydroxyl groups or functional groups producing groups hydroxyl by hydrolysis or the like Z1 is a polar group.) [0045] Examples of hydrocarbon radicals include an alkyl group and an aryl group. It is desirable that the hydrocarbon radical is an alkyl group. The alkyl group is expressed by the following formula: CnH2n + i (n: integer). It is desirable that n satisfy the following formula: ## EQU1 ## When n is greater than or equal to 6, it is possible to improve the ability to retain the oil. When n is less than or equal to 10, it is possible to avoid deterioration of the film quality of the oil retaining wire due to steric hindrance. When n is less than or equal to 10, it is possible to reduce the time required for the polymerization reaction.
    Examples of "functional groups producing hydroxyl groups by hydrolysis or the like" include the alkoxy group, the aminoxy group, the ketoxime group and the acetoxy group. It is possible to use one or two of these groups or more. The alkoxy group may be, for example, a methoxy group (or methoxyl group), an ethoxy group and a propoxy group. It is possible to use 1 or 2 of these groups or more.
    The polar group is a functional group having a polarity. Examples of a polar group include: a hydroxyl group, a carboxy group, a sulfo group, an amino group, a phosphate group, a phosphino group, a silanol group, an epoxy group (or epoxide group), an isocyanate group, a group cyano, a vinyl group and a thiol group. It is possible to use 1 or 2 of these groups or more.
    In the chemical compound defined by formula (3), the functional groups represented by ΖΊ, Y-, and Y2 may be missing in a part of the constituent element because of the bond. For example, the hydroxyl (-OH) group as Z1 may have the form "-O-" by bonding (coupling) with the dehydration condensation receiving surface. The hydroxyl group (-OH) as ΥΊ or Y2 may have the form "-O-" by bonding with another ΥΊ or Y2 by condensation dehydration. In a similar manner, the carboxy (-COOH) group may have the form "-COO-" by bonding (coupling).
    The amount of the chemical compound defined by the formula (3) in the retaining films 11 to 13 may be, for example, 50% by mass or more.
    In the chemical compound defined by the formula (3), for example, the polar group is coupled (bonded) with or adheres to the material (for example an inorganic material such as metal) forming the receiving surface (the surface distal end terminal 3a, the outer peripheral surface 7a, the inner peripheral wall 4a and the facing zone 6b) by dehydration condensation, hydrogen bonding or the like. The chemical compound defined by formula (3) can provide a high capacity to retain oil to oil retaining films 11-13.
    Examples of the chemical compound defined by the formula (3) include the chemical compound defined by the following formula (4):
    The chemical compound defined by the formula (3) can be obtained, for example, by hydrolysis of the chemical compound defined by the following formula (5):
    ! [0053] (M-1 is one of the elements Si, Ti and Zr, R is a hydrocarbon radical, ΥΊ and Y2 are hydrocarbon radicals, hydroxyl groups or functional groups producing hydroxyl groups by hydrolysis or the like. is a functional group producing a hydroxyl group by hydrolysis or the like.) [0054] Examples of "hydroxyl groups producing functional groups by hydrolysis or the like" include an alkoxy group, an aminoxy group, a ketoxime group and an acetoxy group. It is possible to use one or two of these groups or more. The alkoxy group is, for example, a methoxy group (or methoxyl group), an ethoxy group and a propoxy group. It is possible to use 1 or 2 of these groups or more. Examples of the chemical compound defined by the formula (5) include an octyltriethoxysilane (e.g., n-octyltriethoxysilane) defined by the following formula (6):
    - (6)
    Formation of the Oil Retaining Film [0055] For forming the oil retaining films 11 to 13, an oil retaining agent containing an oil retaining agent containing the compound is used, for example chemical defined by the formula (3) and a solvent. An additive (for example, a catalytic hardener such as tin-dibutyl diuralate or tin-dibutyl dilaurate) can be added to the oil retaining agent. The amount, in addition, of the additive is, for example, from 0.001 to 5% by weight. As a solvent, it is possible to use an alcohol, a ketone or the like. Examples of alcohol include methanol, ethanol, propyl alcohol (1-propanol), isopropyl alcohol and butyl alcohol (1-butanol). Examples of ketone include acetone and methyl ethyl ketone. The oil retaining agent may contain no solvent.
    To form the oil retaining films 11 to 13, the above oil retaining manufacturing agent is applied to the receiving surfaces (the distal end terminal surface 3a, the outer peripheral surface 7a, the inner peripheral wall 4a and the facing zone 6b) so as to form an application film. This application film is dried and the solvent is removed, whereby the oil retaining films 11 to 13 are obtained.
    Operation of the Timepiece Component [0057] A lubricating oil 8 is placed between the shaft body 1 and the bearing 2. Examples of the lubricating oil 8 include: an oil made of aliphatic hydrocarbon such as poly-a olefin (PAO) and polybutene; an oil made of aromatic hydrocarbon such as alkylbenzene and alkylnaphthalene; an ester oil such as a polyol ester and a phosphoric ester; an ether oil such as a polyphenyl ether; a polyoxyalkylene glycol oil; silicone oil; as well as a fluorinated oil.
    The shaft body 1 rotates on the central axis C1, relative to the bearing 2. It happens that a portion of the outer peripheral surface of the shaft body 1 (the outer peripheral surface 7a of the inserted portion 7) slides on the inner peripheral wall of the bearing 2 (the inner peripheral wall 4a of the through hole 4).
    Provided extremely lipophilic oil retaining films 11 to 13, the timepiece component 10 exerts, with a high performance, a retention of the lubricating oil 8. Thus, when vibrations are applied to the timepiece component 10 and that, as shown in FIG. 3, the position of the pivot 3 in the through hole 4 fluctuates, the lubricating oil 8 flows easily out of the sliding portion (the portion between the shaft body 1 and the bearing 2). Thus, it is possible to maintain the state in which the lubricating oil 8 is present in the sliding portion (the portion between the shaft body 1 and the bearing 2), so that it is possible to avoid deterioration, due to wear or the like of the shaft body 1 and the bearing 2, and to achieve stable operation over a long period of time.
    In addition, as shown in FIG. 4, even when a space is generated between the pivot 3 and the inner peripheral wall 4a of the through-hole 4, the lubricating oil 8 remains on the surface of the oil-retaining films 11 to 13. Therefore, the films of oil retainers 11 to 13 are not discovered, so that even when the shaft body 1 slides relative to the bearing 2, wear, exfoliation, etc.. oil retaining films 11 to 13 do not occur easily. In this way, it is possible that the ability to retain the oil is maintained and stable operation is achieved over a long period of time.
    Second Embodiment [0061] A timepiece component 20 (corresponding to what is called a mechanical component in the appended claims) will now be described according to a second embodiment of the present invention, with reference to FIGS. 5 to 7.
    FIG. 5 is a sectional view of a mode of the timepiece component 20. FIG. 6 is a sectional view of another embodiment of the timepiece component 20. FIG. 7 is a sectional view of yet another embodiment of the timepiece component 20. In the following, the parts also belonging to the embodiments described above are designated by the same reference numerals and a description thereof. parts will be omitted.
    As shown in FIG. 5, the timepiece component 20 comprises a shaft body 21 (corresponding to what is called the first component in the appended claims), a bearing 22 (corresponding to what is called the second component in the appended claims) and oil retaining films 31 and 32.
    The shaft body 21 comprises a portion of small diameter 23 having a columnar shape, and a portion of large diameter 26 in continuity with the small diameter portion 23. A portion of the small diameter portion 23 is inserted in a through hole 24 of a hole stone 25 and will be called an inserted portion 27.
    The bearing 22 includes the hole stone 25 provided with the through hole 24. For example, the hole stone 25 has a circular shape in a plan view.
    The through hole 24 is formed so as to extend through the hole stone 25, in the direction of the thickness. For example, through hole 24 has a circular shape in a plan view. The inner diameter of the through hole 24 is determined to allow insertion of the small diameter portion 23. For example, the inner diameter of the through hole 24 is larger than the outer diameter of the small diameter portion 23. inner peripheral wall 24a (corresponding to what is called the second surface area in the appended claims) of the through hole 24 is facing an outer peripheral surface 27a (corresponding to what is called the first surface area in the claims annexed) of the inserted portion 27.
    The shaft body 21 is supported by the bearing 22 so as to be rotatable on a central axis C2.
    The first oil retaining film 31 is formed on the outer peripheral surface 27a of the inserted portion 27 of the small diameter portion 23. The first oil retaining film 31 is more lipophilic than the receiving surface. (the outer peripheral surface 27a).
    The second oil retaining film 32 is formed on the inner peripheral wall 24a of the through hole 24 of the hole stone 25. The second oil retaining film 32 is more lipophilic than the receiving surface (the inner peripheral wall 24a).
    The material, etc., constituting the oil retaining films 31 and 32 may be the same as that of the oil retaining films 11 to 13 of the first embodiment. The oil retaining films 31 and 32 may be formed in the same manner as the oil retaining films 11 to 13.
    The lubricating oil 8 is provided between the shaft body 21 and the bearing 22. The shaft body 21 rotates on the central axis C2, relative to the bearing 22. There is the possibility that a portion of the outer peripheral surface of the shaft body 21 slides on the inner peripheral wall of the bearing 22.
    Provided with highly lipophilic oil retaining films 31 and 32, the timepiece component 20 has a high capacity to retain the oil on the lubricating oil 8. Therefore, when vibrations occur are applied to the timepiece component 20 and that, as shown in FIG. 6, the position of the small diameter portion 23 in the through-hole 24 fluctuates, the lubricating oil 8 does not flow easily out of the sliding zone (the area between the shaft body 21 and the bearing 22 ). Therefore, it is possible to maintain the state where the lubricating oil 8 is in the sliding zone (the area between the shaft body 21 and the bearing 22), so that it is possible to to avoid deterioration, due to wear or the like, of the shaft body 21 and the bearing 22 and to achieve stable operation over a long period of time.
    In addition, as shown in FIG. 7, even if a gap is generated between the small diameter portion 23 and the inner peripheral wall 24a of the through hole 24, the lubricating oil 8 remains on the surface of the oil retaining films 31 and
    32. Therefore, the oil retaining films 31 and 32 are not discovered so that even when the shaft body 21 slides with respect to the bearing 22, wear, exfoliation, etc., retaining films oil 31 and 32 do not occur easily. Therefore, it is possible to maintain the ability to retain the oil and to obtain stable operation over a long period of time.
    Third Embodiment [0074] A timepiece component 30 (corresponding to what is called a mechanical component in the appended claims) will now be described according to the third embodiment of the present invention, with reference to FIG. . 8.
    FIG. 8 is a sectional view of the timepiece component 30. In the following, the parts also present in the embodiments described above are designated by the same reference numbers and a description of these parts will be omitted.
    As shown in FIG. 8, the timepiece component 30 has the same structure as the timepiece component 10 of the first embodiment, except that oil repellent films 14-17 are formed.
    The oil repellent film 14 is formed in the region (hereinafter referred to as the first adjacent region 3c) of the outer peripheral surface 3b of the pivot 3 adjacent to the outer peripheral surface 7a where the retaining film of oil 11 is formed. The oil repellent film 14 is less lipophilic than the receiving surface (the first adjacent region 3c).
    The first adjacent region 3c is adjacent to the outer peripheral surface 7a all around the pivot 3. Accordingly, the oil repellent film 14 is adjacent to the oil retaining film 11 throughout the turn of the oil. pivot 3. The region (the first adjacent region 3c) where the oil repellent film 14 is formed may be the entire region of the surface of the pivot 3 where there is no oil retaining film 11 or it can be a part of this region.
    The oil repellent film 15 is formed on a first surface 5a which is on the hole 5 stone and which is opposite the counter pivot stone 6. The oil repellent film 15 is less lipophilic than the receiving surface (the first surface 5a). The first surface 5a is an example of the second adjacent region which is adjacent to the inner peripheral wall 4a on which the oil retaining film 12 is formed. The first surface 5a is a region adjacent to the inner peripheral wall 4a on any the oil-repellent film 15 is adjacent the oil retaining film 12 all the way around the hole-stone 5. The oil-repellent film 15 can be formed on the entire first surface 5a or a part thereof.
    The oil repellent film 16 is formed on a second surface 5b which is on the hole stone 5 and which is a surface opposite to the first surface 5a. The oil repellent film 16 is less lipophilic than the receiving surface (the second surface 5b). The second surface 5b is another example of a second adjacent region which is adjacent to the inner peripheral wall 4a where the oil retaining film 12 is formed. The second surface 5b is a region adjacent to the inner peripheral wall 4a over the entire therefore, the oil repellent film 16 is adjacent to the oil retaining film 12 all the way around the hole 5 stone. The oil repellent film 16 can be formed on the entire second surface 5b or on a part thereof.
    The oil-repellent film 17 is formed in the region (an outer peripheral region 6c) of the facing surface 6a of the counter-pivot stone 6 which is adjacent to the facing zone 6b. The oil repellent film 17 is less lipophilic than the receiving surface (the outer peripheral region 6c). The outer peripheral region 6c is a region that surrounds the facing area 6b and is adjacent to this facing area 6b all the way around the counter-pivot stone 6. Therefore, the oil repellent film 17 is adjacent to the oil retaining film 13 all around the counter pivot stone 6. The outer peripheral region 6c where the oil repellent film 17 is formed may be the entire area of the facing surface where there is no oil retaining film 13, or it may be a part of this region.
    In the case where the contact angle on the surface of the repellent films for the oil 14 to 17 is greater than the contact angle on the receiving surface, the repellent films for the oil 14 to 17 are considered to be less lipophilic than the receiving surface. For example, the oil repellent films 14 to 17 are made of a material having a lower surface energy than the constituent material having the receiving surface.
    For example, the repellent films for oil 14 to 17 contain the chemical compound defined by the following formula (7):
    ... (7) [0084] (M2 is one of the Si, Ti and Zr elements.) Ftf is a fluorine-containing radical Y3 and Y4 are hydrocarbon radicals, hydroxyl groups or functional groups producing hydroxyl groups by hydrolysis or the like Z2 is a polar group.)
    Examples of the fluorine-containing radical include an alkyl group containing one or more fluorine atoms. Examples of an alkyl group containing one or more fluorine atoms include a perfluoroalkyl group and a perfluoropolyether group.
    Examples of "hydroxyl groups producing functional groups by hydrolysis or the like" include an alkoxy group, an aminoxy group, a ketoxime group and an acetoxy group. It is possible to use one or more of these groups. The alkoxy group (or alkoxyl group) is, for example, a methoxy group, an ethoxy group and a propoxy group. It is possible to use 1 or 2 of these groups or more.
    The polar group is a functional group having a polarity. Examples of the polar group include: a hydroxyl group, a carboxy (or carboxyl group), a sulfo group, an amino group, a phosphate group, a phosphine group (or phosphino group), a silanol group, an epoxy group, a isocyanate group, a cyano group, a vinyl group and a thiol group. It is possible to use 1 or 2 of these groups or more.
    The content, in the oil-repellent films 14 to 17, of the chemical compound defined by the formula (7) is, for example 50% or more by mass.
    In the chemical compound defined by formula (7), the polar group is bound (coupled) or adheres to the material (for example an inorganic substance such as a metal) defining the receiving surface (the first adjacent region 3c the first surface 5a, the second surface 5b and the outer peripheral region 6c) by dehydration condensation, by hydrogen bonding or the like.
    In the chemical compound defined by formula (7), the functional groups designated Z2, Y3 and Y4 may be absent in a part of the component element due to the bonding. For example, the hydroxyl (-OH) group as Z2 may have the form "-O-" by bonding with the dehydration condensation receiving surface. The hydroxyl groups (-OH) as Y3 and Y4 may have the form "-O-" by bonding with another Y3 or Y4 by condensation dehydration. In a similar manner, the carboxy (-COOH) group can have the form "-COO-" by bond.
    The chemical compound defined by the formula (7) can increase the ability to repel the oil repellent films for the oil 14 to 17.
    Examples of the chemical compound defined by the formula (7) include a chemical compound defined by the following formula (8):
    (8) [0093] The chemical compound defined by the formula (7) can be obtained, for example, by hydrolysis of the chemical compound defined by the following formula (9): - (9) (X2 is a functional group producing hydroxyl groups by hydrolysis or the like.) [0094] Examples of the "hydroxyl group producing functional group by hydrolysis or the like" include an alkoxy group (or alkoxyl group), an aminoxy group, a ketoxime group and an acetoxy group. It is possible to use 1 or 2 of these groups or more. The alkoxy group is, for example, a methoxy group, an ethoxy group and a propoxy group. It is possible to use 1 or 2 of these groups or more.
    Examples of the chemical compound defined by the formula (9) include trimethoxy (1H, 1H, 2H, 2H-heptadecafluorodecil) silane and triethoxy-1H, 1H, 2H, 2H-tridecafluoro-n-octylsilane. Trimethoxy (1H, 1H, 2H, 2H-heptadecafluorodecil) silane is a chemical compound defined by the following formula (10):
    ... (10)
    Formation of oil repellent films [0096] To form the oil repellent films 14 to 17, for example, an oil repellent agent containing an oil repellent agent containing the oil repellent agent is used. chemical compound defined by formula (7) and a solvent.
    An additive (for example, a catalytic hardener such as dibutyltin diuralate) may be added to the oil repellant. The amount of addition of the additive is, for example, from 0.001 to 5% by weight.
    As a solvent, it is possible to use the same solvent as used in the oil retaining agent given by way of example above. The oil repellent manufacturing agent may not contain a solvent.
    In order to form the repellent films for the oil 14 to 17, the repellent agent for the oil is applied to the receiving surfaces (the first adjacent region 3c, the first surface 5a, the second surface 5b and the outer peripheral region 6c) to form an application film. This application film is dried and the solvent is removed, whereby the oil repellent films 14 to 17 are obtained.
    It is desirable that the oil repellent films 14 to 17 be formed after the oil retaining films 11 to 13. This makes it possible for the oil repellent films 14 to 17 to be formed adjacent to the oil retaining films 11 to 13 without gap. As a result, it is possible to reliably prevent the lubricating oil 8 from flowing out of the region between the shaft body 1 and the bearing 2. Therefore, it is possible to avoid the problem (binding) that the components are caused to stick to each other because the lubricating oil 8 has escaped.
    The timepiece component 30 possesses the oil retaining films 11 to 13, so that it can not easily happen that the lubricating oil 8 escapes. Therefore, as in the case of the timepiece component 10 of the first embodiment, it is possible to achieve stable operation over a long period of time.
    The timepiece component 30 has the oil repellent films 14 to 17 which are adjacent to the oil retaining films 11 to 13, so that the lubricating oil 8 does not flow easily. Therefore, it is possible to further increase the ability to retain the oil from the oil retaining films 11 to 13. Therefore, it is possible to increase the oil retention capacity of the oil retaining films 11 to 13. to achieve stable operation over a long period of time.
    Fourth Embodiment [0103] A timepiece component 40 (corresponding to what is called a mechanical component in the appended claims) will now be described according to a fourth embodiment of the present invention, with reference to FIG. . 9.
    [0104] FIG. 9 is a sectional view of the timepiece component 40. In the following, the parts that also have the embodiments described above are designated by the same reference numbers and a description thereof will be omitted.
    As shown in FIG. 9, the timepiece component 40 has the same constitution as the timepiece component 20 of the second embodiment, except that oil repellent films 34 to 37 are provided.
    The oil repellent film 34 is formed in the region (hereinafter referred to as the first adjacent region 23c) of an outer peripheral surface 23b of the small diameter portion 23 which is adjacent to the outer peripheral surface 27a. wherein the oil retaining film 31 is formed. The oil repellent film 34 is less lipophilic than the receiving surface (the first adjacent region 23c).
    The first adjacent region 23c is adjacent to the outer peripheral surface 27a all the way round the small diameter portion 23. Therefore, the oil repellent film 34 is adjacent to the oil retaining film 31 on all around the small diameter portion 23. The region (the first adjacent region 23c) where the oil repellent film 34 is formed may consist of the entire outer peripheral surface 23b of the small diameter portion 23 where is formed the oil retaining film 31 or it may be a part thereof.
    The oil repellent film 35 is formed on a first surface 25a forming part of the surface of the hole stone 25. The oil repellent film 35 is less lipophilic than the receiving surface (the first surface 25a).
    The first surface 25a is an example of the second adjacent region which is adjacent to the inner peripheral wall 24a where the oil retaining film 32 is formed. The first surface 25a is a region adjacent to the inner peripheral wall 24a. all the way around the hole stone 25. Therefore, the oil repellent film 35 is adjacent to the oil retaining film 32 all the way around the hole 25 stone. The oil repellent film 35 may be formed over the entire first surface 25a or a portion thereof.
    The oil repellent film 36 is formed on a second surface 25b which is part of the surface of the hole stone 25 and which is a surface opposite to the first surface 25a. The oil repellent film 36 is less lipophilic than the receiving surface (the second surface 25b).
    The second surface 25b is another example of the second adjacent region which is adjacent to the inner peripheral wall 24a where the oil retaining film 32 is formed. The second surface 25b is a region adjacent to the inner peripheral wall 24a all around the hole stone 25. Therefore, the oil repellent film 36 is adjacent to the oil retaining film 32 all the way around the hole stone 25. The repellent film for the oil 36 may be formed over the entire second surface 25b or a portion thereof.
    The oil repellent film 37 is formed on a region (the outer peripheral region 26c) which is part of a surface facing the 26a of the large diameter portion 26 and which is adjacent to the outer peripheral surface 23b of the small diameter portion 23. The oil repellent film 37 is less lipophilic than the receiving surface (the outer peripheral region 26c).
    The material, etc., oil repellent films 34 to 37 may be identical to the oil repellent film material 14 to 17 of the third embodiment.
    The timepiece component 40 has the oil retaining films 31 and 32, so that it can not easily occur that the lubricating oil 8 escapes. Therefore, as in the case of the timepiece component 30 of the third embodiment, it is possible to achieve stable operation over a long period of time.
    The timepiece component 40 has the oil repellent films 34 to 37 adjacent to the oil retaining films 31 and 32, so that the lubricating oil 8 hardly flows out of the surfaces of the oil retaining films 31 and 32. Therefore, it is possible to further improve the oil retaining ability of the oil retaining films 31 and 32. Therefore, it is possible to obtain an operation of the oil retaining films 31 and 32. stable over a long period of time.
    Fifth Embodiment [0116] A timepiece component 50 (referred to as a mechanical component in the appended claims) will now be described according to a fifth embodiment of the present invention, with reference to FIGS. 10 to 12. FIG. 10 is a side view of the timepiece component 50 according to the fifth embodiment of the present invention. Fig. 11 is a side view of a timepiece component 50A as it is prior to the formation of the oil retaining film and the oil repellent film. Fig. 12 is a side view of the timepiece component 50A and shows it with the oil retaining film formed thereon.
    As shown in FIG. 10, the timepiece component 50 includes a gearwheel 60 (corresponding to the so-called first component in the appended claims) and a bearing (not shown) (corresponding to what is referred to as the second component in the appended claims). .
    The toothed wheel 60 has a shaft portion 51 and a gear wheel 52 attached to the shaft portion 51.
    A first end 53 (corresponding to the so-called first pivot in the appended claims) and a second end 54 (corresponding to the so-called second pivot in the appended claims) of the shaft portion 51 are supported. by the bearing (corresponding to what is called the second component in the appended claims) so as to be rotatable. There is the possibility that the outer peripheral surfaces (corresponding to what is called the first surface area in the appended claims) of the first end 53 and the second end 54 slide on the inner peripheral wall (corresponding to what is called the second surface area in the appended claims) of the bearing. There is the possibility that the outer peripheral surface (corresponding to what is called the first surface area in the appended claims) of an intermediate portion 55 (intermediate portion in the longitudinal direction) of the shaft portion 51 slides on the wall internal device (corresponding to what is called the second surface area in the appended claims) of a roadway (not shown).
    Oil retaining films 61, 62 and 63 are respectively formed on the outer peripheral surfaces of the first end 53, the second end 54 and the intermediate portion 55 of the shaft portion 51. The material, etc. of the oil retaining films 61 to 63 may be the same as that of the oil retaining films 11 to 13 of the first embodiment.
    Oil-repellent films 64 and 65 are formed, one at a first intermediate region 56 (referred to as the first adjacent region) forming part of the outer peripheral surface of the shaft portion 51 and located between the first end 53 and the intermediate portion 55, and the other at a second intermediate region 57 (called the second adjacent region) forming part of the outer peripheral surface of the shaft portion 51 and located between the intermediate region 55 and the second end 54. The material, etc., constituting the oil repellent films 64 and 65 may be the same as that of the oil repellent films 14 to 17 of the third embodiment. .
    Examples of the bearing (corresponding to what is called the second component in the appended claims) supporting the first end 53 and the second end 54 comprise bearings having the same constitution as the bearing 2 shown in FIG. 1, etc.
    For example, the timepiece component 50 can be prepared as described below.
    As shown in FIGS. 11 and 12, the oil retaining films 61, 62 and 63 are respectively formed on the outer peripheral surfaces of the first end 53, the second end 54 and the intermediate portion 55 of the timepiece component 50A where none of the oil retaining films 61 to 63 and oil repellent films 64 and 65 are formed.
    For example, oil retaining films 61 and 62 can be formed by applying an oil retaining manufacturing agent to the first end 53 and the second end 54 by dipping and drying the agent.
    For example, the oil retaining film 63 can be formed by applying the oil retaining manufacturing agent to the intermediate portion 55 with a brush or the like and drying the agent.
    Next, the timepiece component 50A provided with the oil retaining films 61 to 63 is fully immersed in an oil repellent manufacturing agent, whereby the repellent manufacturing agent for the oil repellent The oil is applied to the first intermediate region 56 and the second intermediate region 57. The oil repellent films 64 and 65 are formed by drying the oil repellant. As a result, the timepiece component 50 shown in FIG. 10 is obtained.
    An escape of the lubricating oil can not easily occur with the timepiece component 50, which has the oil retaining films 61 to 63. Therefore, it is possible to obtain an operation. stable over a long period of time.
    The lubricating oil does not easily flow out of the surfaces of the oil retaining films 61 to 63, with the timepiece component 50 which has the oil-repellent films 61 to 63. By Therefore, it is possible to further improve the ability to retain oil from oil retaining films 61 to 63.
    Sixth embodiment
    Mechanical timepiece [0130] We will now describe a mechanical timepiece 201 employing an escapement mechanism, which is a component of a timepiece (corresponding to what is called a mechanical component in the appended claims) according to the sixth embodiment of the present invention. Fig. 13 is a plan view, front, of a movement.
    As shown in FIG. 13, the mechanical timepiece 201 consists of a movement 210 and a box (not shown) receiving this movement 210.
    The movement 210 comprises a plate 211 constituting an assembly plate. A dial (not shown) is disposed on the rear side of this plate 211. A wheel mounted at the front side of the movement 210 is called the front wheel, while a wheel mounted at the rear side of the movement 210 is called the rear wheel.
    In the plate 211 is formed a winding stem guide hole 211a, wherein a winding stem 212 is mounted so as to be rotatable. The axial position of the winding stem 212 is determined by a switching device comprising a pull rod 213, a rocker 214, a rocker spring 215 and a pull rod 216. In addition, the guide shaft portion of the rod winding 212 is rotatably provided with a winding pinion 217.
    When the winding stem 212 is turned while the winding stem is in a first winding stem position (not 0) which is closest to the inner side of the movement 210 in the direction of the axis of rotation, the winding pinion 217 rotates due to the rotation of a clutch wheel (not shown). Due to the rotation of this winding pinion 217, a crown wheel 220 meshing with it rotates. Due to the rotation of this crown wheel 220, a ratchet 221 meshing with it rotates. In addition, because of the rotation of this ratchet 221, a mainspring (power source) (not shown) housed in a barrel of the movement 222 is raised.
    Except for the movement barrel 222 mentioned above, the front wheel of the movement 210 is formed by a center mobile 225, a mobile 226 average and a mobile seconds 227, and it has the function of transmitting the rotational force of the barrel 222. In addition, on the front side of the movement 210 are disposed an exhaust mechanism 230 and a regulating mechanism 231 controlling the rotation of the front wheel.
    The center mobile 225 has the shape of a toothed wheel meshing with the movement barrel 222. The average mobile 226 has the shape of a toothed wheel meshing with the mobile center 225. The mobile seconds 227 has the shape of a toothed wheel meshing with the moving average 226.
    The regulating mechanism 231 is a mechanism regulating the escape mechanism 230 and comprises a balance spring 240. Exhaust mechanism [0138] The escapement mechanism 230 is a mechanism controlling the rotation of the aforementioned front wheel and it comprises an escape wheel 235 (corresponding to what is called the first component in the appended claims) meshing with the seconds movable 227, as well as an anchor 236 (corresponding to what is called second component in the appended claims) causing the escape wheel 235 is released and rotates regularly. The exhaust mechanism 230 is a timepiece component (corresponding to what is called a mechanical component in the appended claims) according to the sixth embodiment of the present invention.
    [0139] FIG. 14 is a plan view of the escape wheel 235. FIG. 15 is a plan view of the anchor 236. As shown in FIG. 14, the escape wheel 235 has an exhausted tooth portion 101 and a shaft member 102 fixed coaxially to the exhaust tooth portion 101. The orthogonal direction to the axis of the shaft member 102 is called the radial direction. In fig. 4, the direction of rotation of the escape wheel 235 is indicated by the symbol CW.
    The exhaust toothed portion 101 comprises an annular rim 111, a hub 112 disposed on the inner side of the rim 111, and several spokes 113 connecting the rim 111 and the hub 112. The hub 112 has a shape of circular plate, and the shaft member 102 is attached to its central portion by driving or the like. Each spoke 113 extends radially from the outer peripheral edge of the hub 112 to the inner peripheral edge of the rim 111.
    Several teeth 114 having a particular hook shape project radially outwardly from the outer peripheral surface of the rim 111. Pallets 144a and 144b (see Fig. 15) of the anchor 36 described below meshes with the distal ends of the teeth 114.
    The lateral surface of the distal end of each tooth 114 has a rest surface 115a located on the downstream side in the direction of rotation CW of the escapement wheel 235 and arranged to abut against the pallets 144a and 144b a rear surface 115b located on the upstream side in the direction of rotation CW, as well as a pulse surface 115c, which is the distal end terminal surface of the tooth 114.
    The wedge formed by the rest surface 115a and the pulse surface 115c has the function of a rest beak 115d. The wedge formed by the rear surface 115b and the pulse surface 115c has the function of a trailing wedge 115e.
    On the tooth 114, the range from the resting surface 115a to the trailing edge 115e, via the recess 115d, forms a sliding surface 115 (corresponding to what is called the first zone at the surface in the appended claims).
    An oil retaining film 116 is formed on the sliding surface 115. The material, etc., constituting the oil retaining film 116 may be the same as that of the retaining films 11 to 13 of the first embodiment.
    An oil-repellent film similar to the oil-repellent films 14 to 17 of the third embodiment may be formed at least at the region which is a region of the surface of the escapement vehicle 235 and which is adjacent to the sliding surface 115.
    As shown in FIG. 15, the anchor 236 comprises an anchor body 142d having the shape of a T due to three anchor arms 143, and an anchor rod 142f. The anchor body 142d is rotatable by virtue of the anchor rod 142f which is a shaft. Both ends of the anchor rod 142f are rotatably supported respectively relative to the above-mentioned plate 211 and to an anchor bridge (not shown). The rotational travel of the anchor 236 is limited by a limiting rod (not shown).
    Two of the three anchor arms 143 are provided with vanes (an entry pallet 144a and an exit pallet 144b) at their distal ends, while the distal end of the remaining anchor arm 143 is provided with an anchor box 145 (anchor fork) releasably attachable with a double plate (not shown) of the sprung balance 240. The vanes (the entry pallet 144a and the output pallet 144b) consist of in a ruby having a prism shape and they are glued and attached to the anchor arms 143 with an adhesive or the like.
    The distal end of the output pallet 144b has a rest surface 146a located on the upstream side in the direction of rotation CW of the exhaust toothed portion 101 and arranged to abut against the resting surface. 115a of the tooth 114, a rear surface 146b located on the downstream side in the direction of rotation CW, and a pulse surface 146c, which is the distal end terminal surface of the output pallet 144b.
    The wedge formed by the resting surface 146a and the impulse surface 146c has the function of a tipping nose 146d. The wedge formed by the rear surface 146b and the impulse surface 146c serves the function of a trailing wedge 146e.
    The range of the output pallet 146b from the resting surface 146a to the trailing edge 146e, through the tilting wedge 146d, forms a sliding surface 146 (corresponding to what is called a second surface area in the appended claims).
    In the pallets 144a and 144b, the constitution of the distal end of the input pallet 144a is the same as the constitution of the distal end of the output pallet 144b, so that its description will be omitted.
    An oil retaining film 147 is formed on the sliding surface 146. The material, etc., constituting the oil retaining film 147 may be the same as that of the oil retaining films 11 to 13 of the first embodiment.
    An oil repellent film similar to the oil repellent films 14 to 17 of the third embodiment may be formed at least at an area which is an area of the surface of the pallets 144a and 144b, and which is adjacent to the sliding surface 146.
    Including the oil retaining films 116 and 147, the exhaust mechanism 230 is not subject to loss of the lubricating oil. Therefore, it is possible to obtain stable operation over a long period of time.
    In the case where an oil-repellent film is formed adjacent to the oil-retaining films 116 and 147, it is possible to further increase the ability to retain oil from the oil retaining films 116 and 147.
    Mechanism Module [0157] A unit that is part of the movement 210 shown in FIG. 13 and which includes, for example, the escape mechanism 230 (see Fig. 13), the bearing (not shown) of the shaft member 102 (see Fig. 14) of the escape wheel 235, and that the bearing (not shown) of the anchor rod 142f (see Fig. 15) of the anchor 236 is an example of the "mechanism module".
    Other examples of a mechanism module include a unit comprising the movement barrel 222, the center mobile 225, the average mobile 226, the second mobile 227 (see Fig. 16) and their bearings (not shown). shown).
    The mechanism module may be a gearbox or the like used in an analog timepiece of the quartz type.
    Seventh Embodiment [0160] FIG. 16 consists of a perspective view and a sectional view of a hole stone 75 forming a bearing (corresponding to what is called a second component in the appended claims) of a timepiece component. (corresponding to what is called a mechanical component in the appended claims) according to the seventh embodiment of the present invention.
    For example, the hole stone 75 has a circular shape in a plan view. The hole stone 75 has a through hole 74.
    For example, the through hole 74 is formed in the center of the hole stone 75, in a plan view. For example, the through hole 74 has a circular shape in a plan view. For example, the pivot of a shaft body (corresponding to what is called the first component in the appended claims) is inserted into the through hole 74. The shaft body (corresponding to what is called the first component in the appended claims) has, for example, the same constitution as the shaft body 1 shown in FIG. 1, etc.
    An oil retaining film 71 is formed on an inner peripheral wall 74a (corresponding to what is called the second surface area in the appended claims) of the through hole 74 of the hole stone 75. The film of The oil retainer 71 may have the same constitution as the oil retaining films 11 to 13 of the first embodiment.
    An oil repellent film 72 and an oil repellent film 73 are respectively formed on a first surface 75a and a second surface 75b of the hole stone 75. The repellent films for the oil 72 and 73 may have the same constitution as the oil repellent films 14 to 17 of the third embodiment.
    In the timepiece component in question above, the hole stone 75 has the oil retaining film 71, so that it can not easily happen that the lubricating oil escapes. Therefore, it is possible to obtain stable operation over a long period of time.
    The timepiece component in question above comprises the oil repellent films 72 and 73 adjacent to the oil retaining film 71, which further improves the ability to retain the oil. of the oil retaining film 71.
    Eighth Embodiment [0167] A timepiece component (corresponding to what is called a mechanical component in the appended claims) according to an eighth embodiment of the present invention will now be described. Fig. 17 is a section of a portion of a movement 310 employing the timepiece component (corresponding to what is called the mechanical component in the appended claims) of the eighth embodiment.
    The movement 310 comprises a center pinion 343, a minute wheel (not shown) driven in rotation by the rotation of the center wheel 343, and a hour wheel 344 driven in rotation by the rotation of the minute wheel.
    The center mobile 343 comprises a shaft 360. The shaft 360 extends coaxially with the center axis C3 and is inserted into a center tube 325, so as to be rotatable. The center tube 325 extends coaxially with the central axis C3 and is retained by a plate 320.
    An upper end 360a of the shaft 360 is rotatably supported by a pivot structure 363 arranged in the axle 328. A lower end 360b of the shaft 360 projects downwardly from the center tube 325. A minute hand 313 is mounted on the lower end 360b of the shaft 360.
    The hour wheel 344 is arranged coaxially with the central axis C3 of the center wheel 343 and is fitted tightly onto the center tube 325. The hour wheel 344 has a 344a hour gear meshing with the center wheel 343 via the minute wheel (not shown), etc. An hour hand 312 is mounted on the lower end of the hour wheel 344.
    The center wheel 343, the center tube 325 and the hour wheel 344 form the timepiece component (corresponding to what is called the mechanical component in the appended claims) of the eighth embodiment of the invention. present invention.
    The center mobile 343 is a first example of the first component. The center tube 325 is an example of the second component. The shaft 360 of the center wheel 343 rotates relative to the center tube 325, so that there is the possibility that the outer peripheral surface (corresponding to the so-called first surface area in the appended claims) of the 360 shaft slides on the inner peripheral wall (corresponding to what is called the second surface area in the appended claims) of the center tube 325.
    On all or part of the outer peripheral surface of the shaft 360 of the center wheel 343, it is possible to form an oil retaining film having the same constitution as the first oil retaining film 11 of the first embodiment (see Fig. 1).
    On all or part of the inner peripheral wall of the center tube 325, it is possible to form an oil retaining film having the same constitution as the second oil retaining film 12 of the first embodiment (FIG. see Fig. 1).
    The hour wheel 344 is a second example of the first component. The hour wheel 344 rotates relative to the center tube 325, so that there is the possibility that the inner peripheral wall (corresponding to what is called the first surface area in the appended claims) of the hour wheel 344 slides on the outer peripheral surface (corresponding to what is called the second surface area in the appended claims) of the center tube 325.
    On all or part of the inner peripheral wall of the hour wheel 344, it is possible to form an oil retaining film having the same constitution as the first oil retaining film 11 of the first embodiment. (see Fig. 1).
    On all or part of the outer peripheral surface of the center tube 325, it is possible to form an oil retaining film having the same constitution as the second oil retaining film 12 of the first embodiment ( see Fig. 1).
    With the timepiece component in question above, which includes the oil retaining films, it does not readily occur that the lubricating oil escapes. Therefore, it is possible to obtain stable operation over a long period of time.
    The present invention is not limited to the embodiments described above, but encompasses various modifications of the embodiments without departing from the scope of the essence of the present invention, in other words, the specific forms, the specific constitutions, etc. mentioned for the embodiments are given by way of example only and allow modifications if necessary.
    For example, while an oil retaining film is formed on both the shaft body 1 (corresponding to what is called the first component in the appended claims) and the stage 2 (corresponding to what is called the second component in the appended claims) in the timepiece component 10, etc., of the first embodiment shown in FIG. 1, it is only necessary that an oil retaining film be formed on at least one of the first and second components. For example, the timepiece component 10 shown in FIG. 1 may have a constitution having only one of the first and second oil retaining films 11 and 12.
    While in the timepiece component 10 shown in FIG. 1, the oil retaining film 11 is formed on the outer peripheral surface 7a (corresponding to what is called the first surface area in the appended claims) of the inserted portion 7, it is only necessary that the retaining film oil is formed at least on the first surface area. It can also be formed over a larger area than the first surface area of the surface of the first component. In addition, the oil retaining film may not be formed throughout the first surface area, but may be formed on only a portion of it.
    [0183] Similarly, while in the timepiece component 10 shown in FIG. 1, the second oil retaining film 12 is formed on the inner peripheral wall 4a (corresponding to what is called the second surface area in the appended claims) of the through hole 4, it is only necessary that the retaining film oil is formed at least on the second surface area. It can also be formed over a larger area than the second surface area of the surface of the second component. In addition, the oil retaining film may not be formed over the entire second surface area, but may be formed on only a portion of it.
    While in the timepiece component 30, etc., of the third embodiment shown in FIG. 8, the oil repellent film is formed to be adjacent to the oil retaining film, the oil repellent film may be next to the oil retaining film with a gap between the one and the other.
    In the mechanical component in question above, it is only necessary for the first component and the second component to slide relative to one another. In other words, the first component can slide on the second component or the second component can slide on the first component. In addition, the first component and the second component can both be in action (being mobile), whereby they slide over each other.
    [0186] FIG. 18 is a schematic view showing a first variant of the shaft body 1 (see Fig. 1). As shown in fig. 18, a recess 9A is formed in the outer peripheral surface 7a of the inserted portion 7 of the pivot 3 of the shaft body 1A. The recess 9A is an annular groove extending around the axis of the shaft body 1A. The shape of the hollow section 9A (the shape of the section passing through the central axis of the shaft body 1A) is rectangular. The first oil retaining film is formed at least on the outer peripheral surface 7a, the inner wall of the recess 9A and the distal end end surface 3a of the pivot 3.
    [0187] FIG. 19 is a schematic view showing a second variant of the shaft body 1. A shaft body 1B shown in FIG. 19 is distinguished from the shaft body 1A of the first variant (see Fig. 18) in that the shape of the cross section of the recess 9B (the shape of the section passing through the central axis of the shaft body 1B ) is arched. The first oil retaining film is formed at least on the outer peripheral surface 7a, the inner wall of the recess 9B and the distal end end surface 3a of the pivot 3. In this shaft body 1B, the recess 9B has a section of arcuate shape, so that a force in a bending direction does not focus easily at the portion where the trough 9B is formed. Therefore, the shaft body 1B is little prone to a fault.
    [0188] FIG. 20 is a schematic view showing a third variant of the shaft body 1. On the shaft body 1C shown in FIG. 20, two annular projections 18 are formed on the outer peripheral surface 7a, spaced from each other in the axial direction of the shaft body 1C. The shape of the section of the annular projections 18 (the shape of the section passing through the central axis of the shaft body 1C) is rectangular. The space between the two annular projections 18 forms a hollow 9C. The shape of the hollow section 9C (the shape of the section passing through the central axis of the shaft body 1C) is rectangular. The first oil retaining film is formed at least on the outer peripheral surface 7a, the outer surfaces of the annular projections 18, the inner wall of the recess 9C and the distal end end surface 3a of the pivot 3.
    [0189] FIG. 21 is a schematic view illustrating a fourth variant of the shaft body 1. On the shaft body 1D shown in FIG. 21, a plurality of groove-shaped grooves 9D extending centrally and spaced apart from each other about the axis are formed at an annular region 19 forming part of the outer peripheral surface 7a, The groove-shaped depressions 9D are continuous from one end of the annular region 19 to the other end of this annular region 19, in the direction of the central axis.
    [0190] FIG. 22 is a schematic view showing a fifth variant of the shaft body 1. A shaft body 1E shown in FIG. 22 has a plurality of groove-shaped recesses 9E. The shaft body 1E differs from the shaft body 1D shown in FIG. 21 in that the groove-shaped recesses 9E are inclined with respect to the direction of the central axis. The angle of inclination of the groove-shaped recesses 9E with respect to the direction of the central axis may be greater than 0 ° and less than 90 °.
    [0191] FIG. 23 is a schematic view showing a sixth variant of the shaft body 1. A shaft body 1F shown in FIG. 23 has several grooves in the form of a groove 9F. The shaft body 1F differs from the shaft body 1D shown in FIG. 21 in that the groove-shaped recesses 9F have an annular shape extending around the axis.
    FIG. 24 is a schematic view showing a seventh variant of the shaft body 1. On the shaft body 1G shown in FIG. 24, a plurality of groove-shaped grooves 9G extending in the direction of the central axis are formed at the annular region 19. The groove-shaped depressions 9G are shorter than the groove-shaped depressions 9D shown in FIG. fig. 21.
    FIG. 25 is a schematic view showing an eighth variant of the shaft body 1. On the shaft body 1H shown in FIG. 25, a plurality of dashed dots 9H (like dots) spaced from each other are formed at the annular region 19.
    [0194] FIG. 26 is a schematic view showing a ninth variant of the shaft body 1. On the shaft body 11 shown in FIG. 26, intersecting groove-like depressions 91 are formed at the annular region 19. The groove-like depressions 91 comprise a plurality of groove-shaped depressions 911 inclined with respect to the direction of the central axis, as well as a plurality of groove-like depressions 9I2 intersecting the groove-like depressions 911.
    In the shaft bodies 1A to 11 shown in FIGS. 21 to 26, the first oil retaining film is formed at least on the outer peripheral surface 7a, the inner walls of the groove-shaped depressions 9D to 91 and the distal end terminal surface 3a of the pivot 3.
    The recesses 9A to 91 are retaining portions able to retain the lubricating oil.
    The recesses of the shaft portions 1A to 11 shown in figs. 18 to 26 can be formed by cutting, transfer, laser process, etc. The oil retaining film may be formed by application of an oil retaining manufacturing agent. The oil retaining manufacturing agent infiltrates the depressions due to the capillary phenomenon, so that it is easy to form the oil retaining film selectively at the depressions.
    In the shaft bodies 1A to 11, even when the oil retaining film on the outer peripheral surface 7a is worn due to sliding relative to the bearing, the oil retaining film present in the recesses 9A at 91 is not easily abraded. Therefore, the shaft bodies 1A-11 retain the lubricating oil and can operate stably over a long period of time.
    [0199] While the depressions 9D to 9G and 91 shown in FIGS. 21 to 24 and in fig. 26 are groove-shaped depressions formed in the outer peripheral surfaces 7a, the recesses may be those formed by a plurality of ribs formed on the outer peripheral surface 7a (see the recess 9C of Fig. 20). The shapes shown in figs. 21 to 24 and in fig. 26 are also applicable to the hollows formed by ribs.
    [0200] It is desirable that the area of the inner wall of the depressions is important from the point of view of the ability to retain the oil. For example, the depressions 9A and 9B shown in FIGS. 18 and 19 have a single-storey structure. As regards the pattern of the recess, a pattern comprising one or more recesses at the bottom of the recess 9A, 9B may be adopted, that is to say a multistage structure. A recess having a multi-stage structure has an inner wall having a large area, so that it can easily retain the lubricating oil. Therefore, it is better in terms of the ability to retain the oil.
    Examples of shaft bodies also include a constitution in which a plurality of dash-like projections (such as dots) are formed on the outer peripheral surface 7a of the inserted portion 7. In the shaft body of this example, the space provided among the projections dotted (dotted as weights) form a retaining portion capable of retaining the lubricating oil.
    FIG. 27 is a shape diagram showing a first variant of the escape wheel 235 (see Fig. 14). More specifically, FIG. 27 is a side view of the distal end of a movable exhaust tooth 204Adu 235A. As shown in fig. 27, a depression 109A is formed at the pulse surface 115Ac, which is the distal end terminal surface of the tooth 114A. The shape of the section of the recess 109A (the shape of the section in a plane parallel to the central axis of the escapement mobile 235A and perpendicular to the pulse surface 115Ac) is rectangular.
    [0203] FIG. 28 is a shape diagram showing a second variant of the escape wheel 235 (see Fig. 14). More specifically, FIG. 28 is a side view of the distal end of a tooth 114B of an escape wheel 235B. As shown in fig. 28, a recess 109B is formed at a pulse surface 115Bc, which is the distal end terminal surface of the tooth 114B. The shape of the cross section of the trough 109B (the shape of the section in a plane parallel to the central axis of the escapement wheel 235B and perpendicular to the pulse surface 115Bc) is arcuate.
    [0204] FIG. 29 is a schematic diagram showing a first example of the overall pattern of the depressions 109A, 109B (see Figs 27 and 28). As shown in fig. 29, a plurality of groove-like depressions 109A (or a plurality of groove-like recesses 109B) are formed at the impeller surface of the tooth of the escape wheel 235A, 235B (see Figs. 27 and 28) . The troughs 109A (or troughs 109B) have a groove shape extending along the axis of the escapement wheel 235A, 235B (see Figs 27 and 28). Holes 109A (or depressions 109B) are formed in the impulse surface of the tooth from one end to the other end in the direction about the axis. With this configuration, it is possible to remove the sliding resistance of the mobile 235A, 235B to a low level.
    [0205] FIG. 30 is a schematic diagram showing a second example of the overall pattern of the depressions 109A, 109B (see Figs. 27 and 28). The depressions 109A (or depressions 109B) shown in FIG. 30 have a groove shape extending in the direction of the central axis of the escape wheel 235A, 235B.
    [0206] FIG. 31 is a schematic diagram showing a third example of the overall pattern of the depressions 109A, 109B (see Figs 27 and 28). The depressions 109A (or depressions 109B) shown in FIG. 31 have a groove shape extending along the axis of the exhaust movable 235A, 235B, and they are shorter than the recesses shown in FIG. 29.
    [0207] FIG. 32 is a schematic diagram showing a fifth example of the overall pattern of the depressions 109A, 109B (see Figs 27 and 28). The depressions 109A (or depressions 109B) shown in FIG. 32 are arranged in the manner of dots (in the manner of dots).
    [0208] FIG. 33 is a schematic diagram showing a fifth example of the overall pattern of the depressions 109A, 109B (see Figs 27 and 28). The groove-shaped depressions 109A (or depressions 109B) shown in FIG. 33 differ from the recesses shown in FIG. 29 in that they are shaped to be inclined relative to the direction about the axis. The angle of inclination of the groove-shaped depressions with respect to the direction about the axis is greater than 0 ° and less than 90 °.
    [0209] FIG. 34 is a schematic diagram showing a sixth example of the overall pattern of the depressions 109A, 109B (see Figs 27 and 28). The groove-shaped depressions 109A (or depressions 109B) shown in FIG. 34 are formed in a crisscross pattern or lattice.
    权利要求:
    Claims (10)
    [1]

    The hollows shown in FIGS. 29 to 34 can be formed not only in the impulse surface of the tooth, but also over the entire sliding surface (the range extending from the resting surface to the trailing rest). [0211] FIG. 35 is a shape diagram showing a first variant of the pallet (see Fig. 15). More specifically, FIG. 35 is a side view of the distal end of a pallet 144A (entry pallet and exit pallet). As shown in fig. 35, a recess 149A is formed in the impulse surface 146Ac, which is the distal end terminal surface of the paddle 144A. The shape of the hollow section 149A (the shape of the section in a plane parallel to the central axis of the anchor and perpendicular to the impulse surface 146Ac) is rectangular. FIG. 36 is a shape diagram showing a second variant of the pallet (see Fig. 15). More specifically, FIG. 36 is a side view of the distal end of a pallet 144B (entry pallet and exit pallet). As shown in fig. 36, a recess 149B is formed in the impulse surface 146Bc, which is the distal end terminal surface of the vane 144B. The shape of the hollow section 149B (the shape of the section in a plane parallel to the central axis of the anchor and perpendicular to the impulse surface 146Bc) is arcuate. The general shape of the recess 149A, 149B may be one of the shapes shown in one of FIGS. 29 to 34. The recess 149A, 149B may be formed not only in the impulse surface of the pallet 144A, 144B, but may also be formed over the entire sliding surface (the range from the resting surface to at the vanishing point, passing through the tipping corner). The hollow may be formed by cutting, transfer, laser process, etc. An oil retaining film is formed on the sliding surface of the escapement wheel 235A, 235B and on the sliding surface of the pallet 144A, 144B, as well as on the inner wall of the recess. The oil retaining film can be formed by applying an oil retaining manufacturing agent. The oil retaining manufacturing agent infiltrates the hollow by capillary phenomenon, so that the oil retaining film can be easily selectively formed at the recess. On the escapement wheel 235A, 235B and on the pallet 144A, 144B, the oil retaining film at the hollow is not very subject to wear even when the oil retaining film on the surface slip is worn. Therefore, it is possible to retain the lubricating oil and achieve stable operation over a long period of time. The oil retaining film may be applied, for example, to the lateral surface of the tooth of a date indicator, to the lateral surface of a jumper or the like on the inner wall of a drum. barrel, etc. It is only necessary that the retaining portion (the hollow) is formed at one of the areas that are the first surface area of the first component and the second surface area of the second component. The shape of the retaining portion is not limited to a hollow form, since it is able to retain the lubricating oil. claims
    A mechanical component comprising: a first component having a first surface area; a second component having a second surface area on which the first surface area can slide; and an oil retaining film formed on at least one receiving zone selected from the first and second surface regions, the oil retaining film being more lipophilic than the receiving zone.
    [2]
    The mechanical component according to claim 1, wherein an oil repellent film, which is less lipophilic than the receiving zone, is formed on the region adjacent to the oil retaining film on at least one of the first and second components.
    [3]
    The mechanical component according to claim 1 or 2, wherein the oil retaining film contains a chemical compound defined by the following formula (1):

    ... (1) where M-ι is one of the elements Si, Ti and Zr, where R is a hydrocarbon radical, where ΥΊ and Y2 are hydrocarbon radicals, hydroxyl groups or functional groups producing hydroxyl groups by hydrolysis or the like, and wherein Z1 is a polar group.
    [4]
    The mechanical component according to claim 2, wherein the oil repellent film contains a chemical compound defined by the following formula (2):



    - (2) where M2 is one of the elements Si, Ti and Zr, where Rf is a fluorine-containing radical, where Y3 and Y4 are hydrocarbon radicals, hydroxyl groups or functional groups producing hydroxyl groups by hydrolysis or the like, and wherein Z2 is a polar group.
    [5]
    5. Mechanical component according to one of claims 1 to 4, wherein the first component is a shaft body rotating on an axis; and the second component is a bearing whereby the shaft body is rotatably supported.
    [6]
    6. Mechanical component according to one of claims 1 to 5, wherein a retaining portion adapted to retain the lubricating oil is formed in at least one of the first and second surface areas.
    [7]
    7. Mechanical component according to claim 6, wherein the retaining portion is a recess formed in the receiving zone.
    [8]
    8. Mechanism module comprising a mechanical component according to one of claims 1 to 7.
    [9]
    Movement, comprising a mechanical component according to one of claims 1 to 7.
    [10]
    Timepiece, comprising a movement according to claim 9.
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    同族专利:
    公开号 | 公开日
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP3761123A1|2019-07-05|2021-01-06|Association Suisse pour la Recherche Horlogère|Micromechanical component allowing containment of a lubricating substance|US238812A|1881-03-15|Stop-motion for looms |
    JP2001059082A|1999-08-23|2001-03-06|Seiko Instruments Inc|Oil repellent for hydrodynamic bearing and liquid dynamic pressure bearing device and spindle motor using the same|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2017023161|2017-02-10|
    JP2017214949A|JP6963971B2|2017-02-10|2017-11-07|Machine parts, mechanical modules, movements and watches|
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