巴西专利BR112015026789B1 shaving or waxing head for a shaving or waxing appliance and shaving or waxing appliance

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专利摘要:
SHAVING OR DEPILING HEAD FOR A SHAVING OR DEPILING DEVICE AND SHAVING OR DEPILING DEVICE. The present invention relates to a shaving or shaving head (3) for a shaving or shaving apparatus comprising: a bearing frame (33) that includes a coupling frame (29) for coupling the shaving or shaving head to the main cabinet (2) of the appliance for shaving or waxing (1); a shaving or shaving unit (8) comprising a shaving or shaving unit structure (27) and a face that comes into contact with the skin (12) and at least two shaving units (10), each of which it has an external cutting member (16) and an internal cutting member (20) which is rotatable with respect to the external cutting member; a pivot structure (44, 46) to allow the shaving or shaving unit to revolve in relation to the bearing structure; and a centrally driven member (24) arranged to be driven by the motor (6) when the shaving or epilation head is coupled to the main cabinet. Each internal cutting member is rotatable by the central drive member through a separate cutter drive member (26), the central drive member transmitting one (...).
公开号:BR112015026789B1
申请号:R112015026789-0
申请日:2014-05-07
公开日:2020-12-01
发明作者:Hans OOSTERHOFF；Jelte Steur
申请人:Koninklijke Philips N.V.；
IPC主号:

专利说明:

[0001] [001] The present invention relates to a shaving or epilation head for a rotating-type shaving or epilation apparatus and, in particular, to a shaving or epilation head that has a pivoting shaving or epilation unit. The invention also relates to an appliance for shaving or waxing that incorporates such a shaving or waxing head. 2. Description of the related technique
[0002] [002] Electric shaving or shaving devices are frequently used consumer items that, in general, comprise a set of mobile and stationary cutting elements that interact to cut hair on the surface of a user's skin. In the case of rotating electric shavers or epilators, one or more cutting units, each comprising a rotary cutter and a lid, cooperate to cut hair. The lid comes into contact with the skin and the cutter is driven by a motor located inside the body of the razor or shaver. For greater comfort and an effective shave or epilation, the portions of the razor or epilator that come into contact with the user's skin must be able to move or revolve in relation to the body of the razor or epilator to follow the skin surface. . This requires a degree of flexibility in the drive assembly between the motor and the cutter. In general, the more contact the cap for shaving or hair removal makes with the skin, the closer and faster the shaving or hair removal will be. Most shavers or shavers, therefore, allow some freedom of movement of the covers in relation to the body of the shavers or shavers, so that the covers can follow the contours of the user's skin.
[0003] [003] In current rotating shavers or shavers, the movement or flexibility described above is achieved in several possible locations. First, the covers themselves can be mounted resiliently to move up and down and to tilt within a cover holder. Second, the lid holder can be mounted to float or tilt in relation to the shaver or epilator body. A third place of movement can be found between the shaving or shaving unit and the shaver or shaver handle or body. On certain models, the shaving or shaving unit or shaver or shaver head can be mounted to the body on a neck that can revolve back and forth and / or from side to side. A particular model of a razor or shaver may incorporate some or all of these possible degrees of freedom. A device for shaving or waxing is known from U.S. Patent Publication No. US5577324, in which the shaving or waxing head carries three cutting units mounted on an external cutter frame. A drive mechanism is provided inside the body of the razor or shaver and comprises a main gear coupled to three transmission gears. The shaving or shaving head is mounted to revolve around a shaving or shaving head bearing member in relation to the shaver or shaving body and the transmission gears.
[0004] [004] Although the existing models offer considerable flexibility to the user, it would be desirable to provide a shaving or waxing head construction that further accentuates the ability to follow the contours of the skin while allowing for a simple and robust construction. Brief summary of the invention
[0005] [005] According to the invention, a shaving or shaving head is provided to a shaving or shaving apparatus comprising a main cabinet that accommodates an engine, the shaving or shaving head comprising: a bearing structure including a coupling structure for coupling the shaving or epilation head to the main cabinet of the appliance for shaving or epilation;
[0006] [006] a shaving or shaving unit comprising a shaving or shaving unit structure and a face that comes into contact with the skin and at least two shaving units, each of which has an external shaving member and a shaving member internal cutter which is rotatable in relation to the external cutter; a pivot structure to allow the shaving or shaving unit to revolve in relation to the bearing structure; a centrally driven member arranged to be driven by the engine when the shaving or epilation head is attached to the main cabinet; each internal cutting member being rotatable by the central drive member through a separate cutter drive member, the central drive member transmitting a driving force to each cutter drive member at a transmission location; and that the pivot structure is located in an internal area of the shaving or epilation head located between the face that comes into contact with the skin, the cutter's drive members and the transmission locations of the central drive member. The center drive member and cutter drive members each have a bearing that is connected to the unit frame for shaving or epilation to allow the center drive member and cutter drive members to revolve together with the unit for shaving or waxing in relation to the bearing structure.
[0007] [007] Through the arrangement of the central drive member and the cutter drive members in this way, they do not need to be connected to the shaving or shaving unit in a way that allows them to revolve in relation to the shaving or shaving unit . Only the central drive member needs to have a connection to the motor, which allows rotation of the central drive member in relation to the main cabinet, to compensate for the relative rotation of the unit for shaving or shaving in relation to the main cabinet. Such a pivoting connection can be provided through a flexible coupling between the central drive member and the motor. In such a way, the pivoting freedom of the unit for shaving or waxing in relation to the main cabinet, in particular, the maximum permissible pivoting angle of the unit for shaving or waxing in relation to the main cabinet, is less affected by the necessary connection of the central drive member and the cutter drive members with the engine. In addition, by providing the pivot structure in a position above the central actuating member and closer to the face that comes into contact with the unit's skin for shaving or waxing, an improved geometry is achieved, in order to allow for better rotation from the shaving or epilation head to follow the contours of the skin during shaving or waxing, without an unwanted tilt. In conventional shavers or shavers, the rotation of the shaving or epilation head or shaving or waxing unit, in general, occurs around a pivot point or axis that is in or below the central actuating member. is, closer to the engine. According to the present invention, the pivot point or axis is moved flush with the face that comes into contact with the skin and can, for example, be located midway between the central drive member and the face that comes into contact with the skin or even closer to the face that comes into contact with the skin. It should be understood that, in some configurations, the face that comes in contact with the skin of the unit for shaving or waxing may not be flat. For the purpose of determination, the face that comes into contact with the skin can be considered a plane of engagement when the face that comes into contact with the skin is pressed against a flat surface. In the case of a single pivot axis, the pivot axis is preferably located parallel to the face that comes into contact with the skin. In a more preferred mode, the shaving or waxing unit can revolve around two geometric axes, preferably orthogonal geometric axes, both of which are located parallel to the face that comes into contact with the skin. Alternatively, the shaving or waxing unit can revolve universally around multiple geometric axes located parallel to the face.
[0008] [008] In a preferred embodiment, the bearing of the centrally driven member comprises an axis that extends from the unit structure for shaving or epilation in a direction opposite to the face that comes into contact with the skin, and the driving member center is mounted for rotation on the shaft. In general, the axis will be aligned to a normal axis in relation to the pivot axis or, in the case of two geometric pivot axes, orthogonally to them.
[0009] [009] Preferably, the pivot structure defines a pivot point or pivot axis for the shaving or shaving unit in relation to the bearing structure that is spaced from the face that comes into contact with the skin in less than 12 mm , most preferably, less than 10 mm and most preferably, less than 8 mm. As a general rule, it was found that there is a relationship between the distance from a pivot axis or pivot point to the front edge of the face that comes into contact with the skin of a razor or shaver and the distance at which the axis pivot point or pivot point is located below the face that comes into contact with the skin. For a stable geometry, a 3: 1 ratio must be maintained between such distances in order to prevent the unit from tilting for shaving or pivoting shaving under the influence of frictional forces between the skin and the cutting units when moving over the skin. By reducing the distance between the pivot axis and the face that comes into contact with the skin, the said ratio between the two said distances is increased. In addition, other model choices are possible, including, for example, a reduction in stiffness in the rotation of the shaving head or waxing of the appliance for shaving or waxing. Currently, the rotation of a shaving or epilation head that has two cutting units, in general, has been limited to the length direction, that is, when the pivot axis is disposed transversely between the two external cutting members. As a result of the improved pivoting characteristics of the shaving or shaving head of the present invention, even shaving or shaving heads that have two cutting units can revolve around two geometric axes.
[0010] [010] Although the distance from a pivot point or pivot axis to the face that comes into contact with the skin can be determined in absolute terms, it may also be convenient to define it in relative terms. As mentioned above, an ideal configuration is achieved when the ratio of such distance to the lateral distance to the edge of the face that comes into contact with the skin in the direction of movement of the shaving or epilation head on the skin is less than 1: 3. Significant advantages can be achieved when the ratio is less than 1: 2. More precisely, the distance can be determined in relation to the working diameter of an internal cutting member, due to the fact that this will often define the geometry of the face that comes into contact with the skin. Preferably, the distance from the pivot point or pivot axis to the face that comes into contact with the skin is less than the diameter of an internal cutting member, with the most preference being less than half that diameter. .
[0011] [011] In a further embodiment of the invention, the shaving or shaving head is additionally provided with a tilt arrangement that acts on the shaving or shaving unit to revolve the shaving or shaving unit to a neutral position. The neutral position can be a central position where the shaving or shaving unit is halfway between its pivoting end positions. This can also correspond to a position where the central drive member is axially aligned with the bearing frame and / or with the motor drive shaft. Preferably, the tilt arrangement comprises a bellows structure that surrounds the bearing structure and acts between the shaving or shaving unit and the bearing structure. The bellows can generally be tapered, with a wider end of the tapered bellows engaging the unit structure for shaving or waxing and a narrower end of the tapering bellows being engaged around the bearing structure. Other inclination arrangements can be provided to eliminate play in the various pivots.
[0012] [012] Still in an additional embodiment of the invention, the position of the pivot point or pivot axis can be defined in terms of the distance between the center of gravity of the unit for shaving or pivoting shaving and the face that comes into contact with the skin . Preferably, the pivot point or pivot axis is located at a distance from the face that comes into contact with the skin that is less than or equal to the distance between said center of gravity and the face that comes into contact with the skin. Such a configuration allows the shaving or shaving unit to adopt a more stable position during shaving or shaving and with such a setting, less tilt force is required to keep the shaving or shaving unit in a neutral position. In fact, it has been determined that a tilt force that is four times less than that used in conventional geometries may be sufficient to keep the unit for shaving or shaving in the neutral position.
[0013] [013] In an additional embodiment of the invention, the pivot structure comprises cooperating spherical bearing surfaces (144, 146) provided in the shaving or shaving unit and in the bearing structure and arranged in said internal shaving or shaving head area for allow rotation of the unit for shaving or waxing around any axis parallel to the face that comes in contact with the skin of the unit for shaving or waxing. Spherical bearing surfaces can be provided in a ball bearing and a socket bearing, both ball bearing and socket bearing are provided in the bearing structure. It should be understood that the bearing surfaces do not have to be completely spherical, however, it can comprise sections of surface that form a part of a sphere.
[0014] [014] In an additional modality, the pivot structure comprises a so-called Visman coupling element, supplied both in the shaving or shaving unit and in the bearing structure, and disposed in said internal shaving or shaving head area . Such Visman coupling elements are generally well known, for example for use in flexible couplings between drive spindles and rotary shaving or shaving units and need not be further explained in this document. It is understood that they encompass all the boss-cavity type connections that allow a torque transfer along a first axis, while allowing a pivoting movement between a boss and a cavity around two other orthogonal geometric axes for said first axis. Such Visman coupling element may have a geometry as revealed in document № US6722038, the contents of which are incorporated in their entirety, for reference, in this document. This configuration is preferably applicable to shaving or shaving units that have three shaving units, but it should be understood that it can also be applied to shaving or shaving units that have other quantities of shaving units. The Visman coupling element can have a triangular cross section or any other non-circular cross section that prevents rotation of the unit for shaving or shaving in relation to the bearing structure.
[0015] [015] In another embodiment, the pivot structure comprises a living joint formed between the shaving or shaving unit and the bearing structure, and disposed in said internal area of the shaving or shaving head. More particularly, the living joint can be engaged between the shaving or shaving unit structure and a central portion of the bearing structure. The shaving or epilation unit and the bearing structure can be separable from each other, however, the live joint can remain connected to one or the other among such components. In the present context, a live joint is intended to include any flexible element that allows rotation around the first or the first and second geometry axes while allowing a transmission of torque and force along a third perpendicular axis. The living joints are conveniently formed by plastic material, however, it must be understood that a flexible wire, cable or strip can also perform this function.
[0016] [016] In an alternative embodiment, the shaving or shaving unit has two cutting units and the pivot structure comprises cooperating cylindrical bearing surfaces provided in the shaving or shaving unit and in the bearing structure, and arranged in said internal area of the shaving or shaving head to allow rotation of the shaving or shaving unit around only one axis. The cylindrical bearing surface can be aligned transversely between the cutting units.
[0017] [017] Still in an additional modality, the pivot structure comprises a Cardan joint that has two orthogonal pivot geometric axes. In the present modality, the Cardan-type joint can also carry the axis to which the central drive member is mounted, with the axis being orthogonally oriented to the geometric pivot axes of the joint.
[0018] [018] In an additional embodiment, the shaving or shaving unit and the bearing frame comprise guides to prevent rotation of the shaving or shaving unit around an axis of the bearing frame that extends perpendicularly to the face that comes in. skin contact. The guides can be integral with the pivot structure. This can be accomplished using a Visman coupling element, which allows rotation around two pivot geometry axes, while blocking rotation around a third axis that extends perpendicular to the two pivot geometry axes. More preferably, the guides are located separate from the pivot structure, for example, in positions radially outwardly relative to the center of the shaving or shaving unit and a central axis of the bearing structure. It will be apparent to the person skilled in the art that, in order to reduce friction during pivoting movement around the pivot axis, the bearing surfaces of the pivot structure must be in radial positions close to the pivot axis. In order to prevent rotation of the unit for shaving or waxing around the axis of the bearing structure, the guides must be at a radially greater distance from the pivot axis to reduce wear.
[0019] [019] In a further embodiment of the invention, the shaving or shaving unit and the bearing structure comprise limiters to prevent rotation of the shaving or shaving unit in relation to the bearing structure beyond a certain pivot angle. Preferably, such limiters are provided in robust elements that can absorb shocks, for example, caused by the fall of the appliance for shaving or waxing. They should preferably be located as far as possible from the pivot structure. In one embodiment, the shaving or shaving unit comprises a lower cabinet portion that has a spherical internal surface that surrounds the bearing structure and engages a correlated external surface portion of the bearing structure. In the present embodiment, the spherical inner surface of the lower cabinet portion of the shaving or shaving unit and the correlated outer surface portion of the bearing structure cooperate to maintain the mutually pivoting portions of the shaving or shaving head in the manual engagement. The lower cabinet portion may have an opening to allow passage of the bearing structure, and cooperating limiters may be formed on the bearing structure and on the lower cabinet portion, in particular, on an edge portion of the opening of the bearing portion. bottom cabinet. As a result of the position of the pivot point or pivot axis close to the face that comes into contact with the skin of the unit for shaving or waxing, the distance from the pivot point or pivot axis to the limiters is relatively large, leading to robust limiters . Alternatively or in addition, a limiter can be provided in a part of the main cabinet of the appliance for shaving or hair removal for cooperation with the limiter in the bearing structure.
[0020] [020] In a more preferred embodiment of the invention, the bearing structure comprises a support tube which carries the coupling structure and a pivot structure mounted to the support tube and which carries a stationary part of the pivot structure. In the present embodiment, the central drive member can be driven by the motor through a drive spindle arranged on the support tube, preferably through a flexible coupling between the central drive member and the drive spindle. In an additional embodiment, the side openings are formed between the support tube and the pivot structure and the central drive member is operationally in engagement with each drive member of the cutter through a respective one of the side openings. In the form of a shaving or epilation head with three cutting units, at least three of such side openings will be necessary in order to provide engagement of the central drive member with the cutter drive members of the three internal cutting members . In general, the side openings provide access to the internal space of the support tube
[0021] [021] In an additional modality, the pivot structure comprises a central portion that carries the stationary part of the pivot structure, said central portion being connected to the support tube through lateral arms and that the lateral openings are present between the side arms. The pivot structure and the support tube can be mechanically engaged, for example, through the use of pressure connectors that allow an easy installation of the central drive member in the internal space of the support tube followed by the easy assembly of the pivot structure and support tube. The pivot structure may comprise a central portion that forms the stationary part of the pivot structure for pivoting engagement with a movable part of the pivot structure mounted on the unit for shaving or shaving. The pivot structure is connected to the support tube through the side arms. For a shaving or waxing unit with three shaving units, three such side arms can be provided, in order to define three side openings between them to enable the engagement of the central drive member with each of the drive members of the three cutting units. The side arms can form the guides discussed above to prevent rotation of the unit for shaving or waxing around an axis of the support tube that extends perpendicularly to the face that comes into contact with the skin. For this purpose, the side arms can be accommodated inside channels of corresponding formats of the unit for shaving or waxing. The support tube and the pivot structure can also be formed as a single integral element.
[0022] [022] The shaving or shaving head pivot structure described above can provide all the necessary pivoting freedom for the shaving or shaving head. Most preferably, however, only one of numerous degrees of pivoting freedom is included within the shaving or waxing head. Most preferably, each cutting unit comprises a support to which the external cutting member is mounted, the supports being pivotally mounted to the unit for shaving or waxing. The supports can form hoops of leather bearings arranged around the cutting units. The brackets can be mounted on point axes to revolve through a single axis around their central lines. The external cutting members themselves can also be mounted resiliently to be depressable and pivoting in relation to the supports or, as is otherwise conventional in the art, in relation to the face that comes into contact with the skin.
[0023] [023] The invention additionally relates to a shaving or shaving apparatus comprising a main cabinet and a shaving or shaving head as described above and from this point on. The shaving or waxing head is preferably removably attached to the main cabinet via the coupling frame. The shaving or waxing unit can therefore revolve in relation to the main cabinet. The coupling structure allows the shaving or epilation head to be exchanged for other accessories. Brief description of the drawings
[0024] [024] The additional features and advantages of the invention will be evident with reference to the following drawings of various exemplary modalities, in which: Figure 1 shows a perspective view of an appliance for shaving or waxing according to the present invention; Figure 2A shows a schematic view of a shaving or shaving head, which illustrates conventional geometry; Figure 2B shows a schematic view illustrating the geometry of a shaving or shaving head according to the present invention; Figure 3 shows a partially sectioned perspective view of a first embodiment of a shaving or shaving head according to the present invention; Figure 4 is a view from the bottom of the shaving or shaving unit of Figure 3, in the direction of arrows VI in Figure 3; Figure 5 shows a partially sectioned perspective view of a second embodiment of a shaving or shaving head according to the present invention; Figure 6 shows a partially sectioned perspective view of a third embodiment of a shaving or shaving head according to the present invention; Figure 7 shows a view of the underside of the shaving or shaving unit structure of Figure 6 in the direction of arrows VII in Figure 6; and Figure 8 shows an exploded perspective view of the shaving or shaving head of Figure 6 including all components. Description of the illustrative modalities
[0025] [025] Figure 1 shows a perspective view of an appliance for shaving or waxing 1 according to the invention. The shaving or epilation appliance 1 has a main cabinet 2 and a shaving or epilation head 3, connected together through a neck 4. Cabinet 2 accommodates the motor 6 and the drive shaft 7 and the additional components that include a power supply, electronic control components and the like, which are otherwise conventional and will not be described later. The shaving or epilation head 3 comprises a shaving or epilation unit 8 that supports three cutting units 10 on its face that comes into contact with the skin 12. The cutting units 10 are each supported by a support 14. As is generally conventional, the cutting units 10 each comprise an external cutting member 16 with slits 18 to allow hair to pass through. Inside the outer cutting member 16 is located an inner cutting member 20 that rotates to cut the hairs that pass through the slits 18. As is also generally conventional, the supports 14 are each mounted to revolve in relation to the unit for shaving or waxing 8 around a transverse axis T. The external cutting members 16 are mounted resiliently with respect to the supports 14. In addition, the shaving or waxing unit 8 is also arranged to revolve around the geometric axes both X and Y which are located in the general plane of the face that comes into contact with the skin 12. The shaving or epilation unit 8 is prevented from rotating around the Z axis.
[0026] [026] Figure 2A shows a schematic view of a shaving or epilation head 3, which illustrates the conventional geometry of the drive set and components. Similar elements are designated with reference numbers corresponding to those in Figure 1. The drive shaft 7 of the motor engages a central drive member 24 which is engaged with three drive members of the cutter 26 to drive each of the internal cutting members 20 The pivot point P, around which the shaving or shaving unit 8 can rotate, is located in a position where the drive shaft 7 is engaged with the central drive member 24. This position is below the transmission locations L where the central drive member 24 transmits its drive force to each of the cutter drive members 26. The pivot point P is also located below a center of gravity CG of the unit for shaving or shaving 8. As can be seen in Figure 2A, during a shaving or shaving movement in a direction A, a frictional force F on the face that comes into contact with the skin 12 of the shaving unit or Pilot 8 acts at a distance D1 from the pivot point P, thus inducing an M1 moment that acts in a counterclockwise direction. If such a moment M1 exceeds a moment M2 due to the reaction force R on the skin at a distance D2 from the pivot point P, then the shaving or epilation unit 8 can be tilted and become unable to properly follow the contours of the skin. The distance D2 is determined by the configuration of the shaver or shaver unit 8 and, in general, corresponds to the distance between the pivot point P and the edge of the face that comes into contact with the skin 12 in the direction A of the shave or shave. It should also be understood that in the position represented by the pivot point P, which is below the center of gravity CG of the shaving or epilation unit 8, the shaving or epilation unit 8 tends to tilt in the absence of other elements of bearing.
[0027] [027] Figure 2B shows the shaving or shaving head 3 according to the present invention, where the geometry of the shaving or shaving head 3 is adapted to reduce the risk of unwanted tilt and enhance the unit's ability to shave or shave 8 to follow the contours of the skin. According to the invention, when the shaving or epilation head 3 is coupled to the main cabinet 2 of the appliance for shaving or waxing, the drive shaft 7 is engaged with the central drive member 24, which, in turn, is engaged with the three cutter drive members 26 at transmission locations L as shown in Figure 2A. In this geometry, however, the pivot point P for the shaving or epilation head 3 is located in an elevated position close to the face that comes into contact with the skin 12 and above the CG center of gravity of the shaving or epilation unit 8. In particular, the pivot point P is now located in a position between the face that comes into contact with the skin 12 and the central actuating member 24, more specifically in an internal area of the shaving or epilation head 3 located between the face that comes into contact with the skin 12, the drive members of the cutter 26 and the transmission locations L of the central drive member 24. In the present embodiment it is possible to observe that the location of the pivot point P is at a distance D1 of the face that comes into contact with the skin 12, which is less than the depth dimension of the external cutting members 16. In other words, the pivot point P is situated on a plane parallel to the face that comes into contact with the skin 12 what i intercept the outer cutting members 16. As a result of such geometry, the frictional force F on the face that comes into contact with the skin 12 of the shaving or epilation unit 8 during a shaving or shaving movement in direction A acts in a much smaller distance from pivot point P than in the conventional geometry of Figure 2A. The moment M1 induced by the frictional force F is, therefore, significantly smaller and the shaving or epilation unit 8 is less likely to be tilted, since the geometry of the face that comes into contact with the skin 12 remains the same. Not only is the shaving or epilation unit 8 less likely to be tilted, but also, during use, the reaction force R can remain close to the pivot point P, so that the force on the skin is better distributed. Additionally, since the pivot point P is now above the center of gravity CG of the shaving or epilation unit 8, the shaving or epilation unit 8 is better balanced. In Figures 2A and 2B, the face that comes into contact with the skin 12 of the shaving or epilation unit 8 is shown as flat. It should be understood that, in fact, the neutral position of the external cutting members 16 and supports 14 can lead to the possibility that the face that comes into contact with the skin 12 is different from flat and it can only become flat when all the external cutting members 16 and / or supports 14 are aligned, for example, when pressing the face that comes into contact with the skin 12 against a flat surface. As a general rule, it was found that a 3: 1 ratio between the distance D2 from the pivot point P to the edge of the face that comes into contact with the skin 12 in the direction A of the shaving or shaving movement and the distance D1 of the pivot point P below the face that comes into contact with the skin 12 must be maintained in order to prevent tilting the appliance for shaving or epilation using normal use. For this reason, the rotation of a shaving or epilation head that has shaving units in general is limited to the length direction. As a result of the improved geometry of the present invention, even shaving or shaving heads that have two cutting units can revolve around two geometric axes.
[0028] [028] Figure 3 shows a first embodiment of a shaving or shaving head 3 according to the invention, which illustrates a partially sectioned perspective view of the shaving or shaving head 3 where certain components have been removed for clarity. The shaving or shaving head 3 comprises a shaving or shaving unit structure 27 and a support tube 30. The support tube 30 is located on the neck 4 of the shaving or epilation appliance 1 and connects to the main cabinet 2 in one pressure snap arrangement on a coupling frame 29. A flexible bellows 31 covers the support tube 30. The flexible bellows 31 is resilient and tends to tilt the shaving or shaving unit 8 to the neutral position as shown. At the upper end of the support tube 30, the side openings 32 are formed between the support tube side arms 34 of the support tube 30. Mounted on the support tube side arms 34 is a pivot structure 36 having side arms 38 which are attached to the side arms of the support tube 34 in a pressure connection 40. The support tube 30 and the pivot structure 36 together form a bearing structure 33 of the shaving or shaving head 3 which has a cavity internal 42.
[0029] [029] The pivot structure 36 has a central portion 41 with a generally triangular opening 44. The triangular opening 44 forms the female bearing surface of a so-called triangular Visman coupling element. The male bearing surface of the Visman coupling element is provided through a triangular protrusion 46 which depends on the center of the unit structure for shaving or epilation 27. The projection 46 and the triangular opening 44 form a pivot structure to allow the shaving or epilation unit 8 revolve in relation to the bearing structure 33. Said pivot structure prevents relative rotation of the shaving or shaving unit structure 27 and the bearing structure 33 around the Z axis, but allows a relative pivoting movement of the shaving or shaving unit structure 27 relative to the shaving structure. bearing 33 around the X and Y geometry axes.
[0030] [030] Under and attached to the shaving or waxing unit structure 27 is an axis 48 that extends from the shaving or waxing unit structure 27 in a direction opposite to the face that comes into contact with the skin 12, which thus protrudes into the cavity 42 of the bearing structure 33. The shaft 48 is engaged in a groove 49 of the shaving or shaving unit structure 27 and retains the pivot structure 36 in an axial position in the Z direction with respect to the projection 46. A disc spring 47 between the axis 48 and the central portion 41 of the pivot structure 36 serves to reduce the clearance in such a connection. The shaft 48 also serves as a bearing for the central drive member 24, which is engaged with the cutter drive members 26 through the side openings 32. As a result, the central drive member 24 has a bearing that is connected to the shaving or shaving unit 27 so that the central drive member 24 can revolve together with the shaving or shaving unit 8 in relation to the bearing frame 33. The cutter drive members 26 extend upwardly through the frame shaving or shaving unit 27 to engage the internal shaving members 20 inside the external shaving members 16 carried by the brackets 14. The cutter drive members 26 also have bearings connected to the shaving or shaving unit structure 27, which allows them to revolve together with the central drive member 24 and the shaving or epilation unit 8 in with respect to the bearing structure 33. Such bearings have been omitted for clarity in Figure 3. As can be seen in Figure 3, the supports 14 are arranged in recesses 50 formed on the upper surface of the unit structure for shaving or epilation 27. The recesses 50 are separated by three ridges 52. On the underside of the shaving or waxing unit structure 27, under the ridges 52, three channels 54 are formed in which the side arms 38 are accommodated. The channels 54 intersect in the center of the shaving or waxing unit structure 27 at the projection 46. The channels 54 are generally parallel to the face that comes into contact with the skin 12 of the shaving or waxing unit structure 27, while the side arms 38 are angled slightly downwardly from the central portion 41. A divergent gap between the channels 54 and the side arms 38 allows the unit structure for shaving or epilation 27 to revolve through an angle α with respect to bearing structure 33.
[0031] [031] Figure 4 is a view from the underside of the shaving or shaving unit structure 27 in Figure 3, in the direction of arrows VI in Figure 3, in a plane that crosses pivot structure 36 in a position below the projection 46. As can be seen, the triangular projection 46 is a close fit for the triangular opening 44 and the lateral arms 38, in general, correspond to the shape of the channels 54. As a result of its shape, the projection 46 and the opening triangular 44 prevent a relative rotation of the shaving or shaving unit structure 27 and the bearing structure 33 around the Z axis. However, they allow a relative pivoting movement of the shaving or shaving unit structure 27 relative to the shaving structure. bearing 33 around the X axis and the Y axis shown in Figure 1. The same applies to side arms 38 and grooves 54.
[0032] [032] A shaving or waxing head 103 according to a second embodiment of the invention is shown in a partially sectioned perspective view in Figure 5. Elements similar to the first embodiment are provided with similar reference numbers increased by 100.
[0033] [033] According to Figure 5, the shaving or shaving head 103 comprises a shaving or shaving unit structure 127 and a bearing structure 13 3 comprising a support tube 130 and a pivot structure 136. In In this embodiment, pivot structure 136 has a central portion 141 with a ball bearing 144. The unit structure for shaving or epilation 127 is generally identical to the first embodiment and differs only in that a socket bearing 146 is provided in the center on the underside of the shaving or epilation unit 127 at the position where the channels 154 cross. Ball bearing 144 and socket bearing 146 mesh to form a pivot structure that allows the shaving or shaving unit structure 127 to revolve in relation to bearing structure 133 around any axis that is located parallel to the plane of the face that comes into contact with the skin 112.
[0034] [034] Similar to the case of the first modality, the side arms 138 are located inside the channels 154. As a consequence of such an adjusted shape, the rotation of the unit structure for shaving or epilation 127 in relation to the bearing structure 133 around the Z axis is prevented. In addition, shaking or rotating the shaving or shaving unit structure 127 around ball bearing 144 is limited to angle α which corresponds to the angular distance between side arms 138 and channels 154. The shaving unit structure or epilation 127 includes an axle 148, which descends downwardly below ball bearing 144, which acts as a bearing to which a centrally driven member (not shown) is mounted for rotation.
[0035] [035] The skilled person will recognize that many alternative configurations can be envisaged for the pivot structure. In particular, ball bearing 144 and socket bearing 146 can be exchanged for a universal Cardan coupling that has orthogonal geometric axes, coupled between the shaving or epilation unit structure 127 and the pivot structure 136. Alternatively, a live joint or suitable flexible element can join the shaving or epilation unit structure 127 to the pivot structure 136 at that point. In the case of a head with only two cutting units, only a single pivoting direction may be required and a cylindrical surface may be used instead of the spherical bearing surfaces of ball bearing 144 and socket bearing 146.
[0036] [036] Figure 6 shows a shaving or epilation head 203 according to a third and most preferred embodiment of the invention, in a partially sectioned perspective view. Elements similar to the first embodiment are provided with similar reference numbers increased by 200. Elements not relevant to an understanding of the invention have been omitted in such a view.
[0037] [037] According to Figure 6, the shaving or shaving head 203 has a bearing structure 233 pivotally connected to a shaving or shaving unit 208 in which the shaving units 210 are located. Each cutting unit 210 comprises an external cutting member 216 and an internal cutting member 220 supported by a pivoting support 214, where the internal cutting member 220 is engaged by a cutter drive member 226. The bearing structure 233 comprises a support tube 230 and a pivot structure 236 having a central portion 241 with a spherical socket 244 facing upwards. The spherical socket 244 has an opening 245 through its base facing the inner cavity 242 of the bearing structure 233. The opening 245 extends outwardly at its lower end as will be explained in more detail below.
[0038] [038] The shaving or shaving unit 208 has a shaving or shaving unit structure 227, which also differs from the first embodiment in which a spherical protrusion 246 is provided in the center of its underside in the position where the channels 254 intersect . The spherical projection 246 supports an axis 248 that extends from its lower end. In the assembled position, the spherical projection 246 is seated on the spherical socket 244, so as to form a pivot structure that allows the shaving or epilation unit 208 to revolve in relation to the bearing structure 233, with the shaft 248 extending to from the unit structure for shaving or epilation 227 downwardly through the opening 245 and the central portion 241. A central drive member 224 is mounted for rotation on the shaft 248 within the inner cavity 242 and engages the drive members of the cutter 226 through the side openings 232 between the side arms 238 at transmission locations L. The cutter drive members 226 each have a cutter bearing 261 carried by the shaving or shaving unit structure 227. In the form of Figure 6, the shaving or epilation unit structure 227 includes a lower cabinet portion 255 of the shaving or epilation unit and a cabinet portion and top 257 of the unit for shaving or waxing. The lower cabinet portion 255 of the shaving or shaving unit has a spherical inner surface 263 and a lower rim 256. The support tube 230 has a lower rim 258 with a correlated outer surface portion 265 that engages the spherical inner surface 263 of the lower rim 256 so as to be a sliding fit.
[0039] [039] In a similar way to the previous modalities, the side arms 238 are located inside the channels 254. As a consequence of such an adjusted shape, the rotation of the unit structure for shaving or epilation 227 in relation to the bearing structure 233 to the around the Z axis is prevented. The agitation or rotation of the spherical projection 246 in the spherical socket 244 is permitted due to the angular distance between the side arms 238 and the channels 254 and also due to the distance between the axis 248 and the opening 245.
[0040] [040] According to an advantage of the third modality, the lower rim 256 is arranged at a distance from the support tube 230 so that the pivoting movement of the shaving or shaving unit structure 227 is limited to an angle α that , in this case, it is defined by the angular distance from the neutral position to a point where a limit between the lower rim 256 and the support tube 230 occurs. Such components can be robustly manufactured compared to the shaft 248 and the side arms 238. In the event that the shaving or epilation appliance is dropped, the impact of a blow to the shaving or epilation head 203 has the probable cause of cause a shaving or epilation unit 208 to revolve around the bearing frame 233 to the maximum extent possible. Such rotation is stopped by the lower rim limiter 256 with the support tube 230, whereby it is possible to avoid injury to the side arms 238.
[0041] [041] According to Figure 6, it should be understood that when the shaving or epilation unit 208 is turned in relation to the support tube 230, the axis 248 that carries the central drive member 224 is displaced laterally in relation to the Z axis, inside the internal cavity 242 of the support tube 230. A central coupling shaft 260 is placed in engagement with the drive shaft 207 through a Visman coupling as described above and can also revolve in relation to it, while transfers the torque. The central coupling shaft 260 is mounted resiliently under the inclination of the central coupling spring 262 which presses on the central drive member 224. The central coupling spring 262 also tilts the shaving or epilation unit 208 upwardly with respect to to the cabinet of the appliance for shaving or epilation and the support tube 230. This causes the spherical shaped lower rim 256 to engage with the lower rim 258 of the support tube 230.
[0042] [042] During use, the reaction force R provided by the user against the skin acts against the inclination of the central coupling spring 262, in order to cause the spherical inner surface 263 and the correlated outer surface portion 265 to separate. , thus reducing friction between such surfaces. The pivoting movement of the shaving or epilation unit 208 is resisted only by the friction inside the spherical socket 244. It has been found that due to the optimized location of the pivot point P and the reduced friction, a significantly reduced bellows stiffness 231 can be used , in order to allow an extremely light shaving or epilation action.
[0043] [043] Figure 7 shows a view of the underside of the shaving or shaving unit structure 227 from which the support tube 230 and the lower cabinet portion 255 have been removed. As can be seen in such a view, the pivot structure 236 is seated neatly within the channels 254 of the shaving or shaving unit structure 227. The central portion 242 also has a triangular shape, through which the axis 248 lies. extends.
[0044] [044] Figure 8 shows an exploded perspective view of the shaving or epilation head 203 according to the third embodiment, including all components. From top to bottom, the outer cutter members 216, the inner cutter members 220 and the brackets 214 that form the cutter units 210, the cutter drive members 226, the upper cabinet portion 257 of the shaving unit are included. or shaving, the shaving or shaving unit structure 227, the bottom cabinet portion 255 of the shaving or shaving unit, the pivot structure 236 including cutter bearings 261, the support tube 230, the bellows 231, the limb drive shaft 224, the central coupling spring 262 and the central coupling shaft 260.
[0045] [045] Thus, the invention has been described with reference to certain modalities discussed above. It must be recognized that such modalities are susceptible to several modifications and alternative forms well known to those skilled in the art. In particular, the heads for shaving or shaving three units can be replaced with heads for shaving or shaving with two shaving units or more than three shaving units.
[0046] [046] Many modifications in addition to those described above can be made in the structures and techniques described in this document, without deviating from the spirit and scope of the invention. Consequently, although specific modalities have been described, they are only examples and are not limiting the scope of the invention.

权利要求:
Claims (16)
[0001]
SHAVING OR STRAINING HEAD (3) FOR A SHAVING OR STRAINING DEVICE (1) comprising a main cabinet (2) that accommodates an engine (6), the shaving or epilation head comprising: - a bearing structure (33) which includes a coupling structure (29) for coupling the shaving or epilation head to the main cabinet of the appliance for shaving or epilation; - a shaving or shaving unit (8) comprising a shaving or shaving unit structure (27) and a face that comes into contact with the skin (12) and at least two shaving units (10), each of which one has an external cutting member (16) and an internal cutting member (20) which is rotatable with respect to the external cutting member; - a pivot structure (44, 46) to allow the shaving or shaving unit to revolve in relation to the bearing structure; - a centrally driven member (24) arranged to be driven by the engine when the shaving or shaving head is coupled to the main cabinet; each internal cutting member being rotatable by the central drive member through a separate cutter drive member (26), the central drive member transmitting a driving force to each cutter drive member at a location of transmission (L); and the pivot structure being located in an internal area of the shaving or waxing head located between the face that comes into contact with the skin, the cutter's driving members and the transmission sites of the centrally driven member; characterized by the central drive member and the cutter drive members each having a bearing (48, 261) that is connected to the unit structure for shaving or waxing to allow the central drive member and the drive members of the cutter revolve together with the shaving or shaving unit in relation to the bearing structure.
[0002]
SHAVING OR DEPILING HEAD, according to claim 1, characterized in that the centrally driven member bearing comprises an axis extending from the unit structure for shaving or epilation in a direction opposite to the face that comes into contact with the skin , and the central drive member is mounted for rotation on the shaft.
[0003]
SHAVING OR DEPILING HEAD, according to claim 1, characterized in that the shaving or epilation unit is pivoting in relation to the bearing structure around a pivot point (P), which is distanced from the face that comes into contact with the skin less than 12 mm, preferably less than 10 mm and, most preferably, less than 8 mm.
[0004]
SHAVING OR STRAINING HEAD according to claim 1, characterized in that it further comprises a tilt arrangement (31) which acts on the shaving or epilation unit to revolve the shaving or epilation unit to a neutral position, which comprises preferably, a bellows structure that surrounds the bearing structure and acts between the shaving or shaving unit and the bearing structure.
[0005]
SHAVING OR DEPILING HEAD according to claim 1, characterized in that the pivot structure comprises cooperating spherical bearing surfaces (144, 146) provided in the shaving or epilation unit and in the bearing structure and arranged in said internal area of the shaving head shaving or shaving to allow rotation of the shaving or shaving unit around any axis parallel to the face that comes into contact with the skin.
[0006]
SHAVING OR DEPILING HEAD, according to claim 1, characterized in that the pivot structure comprises a Visman coupling element (44, 46) provided both in the shaving or waxing unit and in the bearing structure and disposed in said internal area of the shaving or waxing head.
[0007]
SHAVING OR DEPILING HEAD, according to claim 1, characterized in that the pivot structure comprises a living joint formed between the shaving or epilation unit and the bearing structure and is arranged in said internal area of the shaving or epilation head.
[0008]
SHAVING OR STRAINING HEAD according to claim 1, characterized in that the shaving or shaving unit has two cutting units and the pivot structure comprises cooperating cylindrical bearing surfaces provided in the shaving or shaving unit and in the rolling and arranged structure in said inner area of the shaving or shaving head to allow rotation of the shaving or shaving unit around only one axis
[0009]
SHAVING OR SEPARATING HEAD according to claim 1, characterized in that the shaving or shaving unit and the bearing structure comprise guides (38, 54) to prevent rotation of the shaving or waxing unit around an axis of the shaving structure. bearing that extends perpendicularly to the face that comes into contact with the skin.
[0010]
SHAVING OR DEPILING HEAD according to claim 1, characterized in that the bearing structure comprises a support tube (30) which supports the coupling structure and a pivot structure (36) mounted to the support tube and which supports a part stationary position of the pivot structure.
[0011]
SHAVING OR STRAINING HEAD according to claim 10, characterized in that the side openings (32) are formed between the support tube and the pivot structure and the central drive member is operationally in engagement with each cutter drive member through one of the respective side openings.
[0012]
SHAVING OR DEPILING HEAD, according to claim 10 or claim 11, characterized in that the pivot structure comprises a central portion that supports the stationary part of the pivot structure, said central portion being connected to the support tube through side arms (38) and the side openings being present between the side arms.
[0013]
SHAVING OR STRAINING HEAD according to claim 12, characterized in that the bearing of the central drive member comprises an axis extending from the shaving or shaving unit structure and through the central portion of the pivot structure in an opposite direction to the face that comes into contact with the skin and the central drive member to be mounted for rotation on the axis.
[0014]
SHAVING OR STRAINING HEAD according to claim 1, characterized in that the shaving or shaving unit comprises a lower cabinet portion (255) that has a spherical inner surface (263) that surrounds the bearing structure and engages a surface portion correlated external part (265) of the bearing structure.
[0015]
SHAVING OR STRAINING HEAD according to claim 14, characterized in that the lower cabinet portion of the shaving or shaving unit comprises a stop (256) for engaging a stop (230) provided on the bearing structure to prevent rotation of the unit for shaving or waxing in relation to the bearing structure beyond a certain angle.
[0016]
SHAVING OR DEPILING APPLIANCE (1), characterized by comprising a main cabinet (2) and a shaving or epilation head, as defined in any of the preceding claims.

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同族专利:

公开号 | 公开日

WO2014184065A1|2014-11-20|

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EP2964429A1|2016-01-13|

US20160052153A1|2016-02-25|

BR112015026789A2|2017-07-25|

JP2016514557A|2016-05-23|

JP5990663B2|2016-09-14|

US9592614B2|2017-03-14|

ES2604610T3|2017-03-07|

EP2964429B1|2016-08-24|

CN105377514B|2017-05-10|

RU2657883C2|2018-06-18|

RU2015142380A|2017-06-21|

CN105377514A|2016-03-02|

CA2908834A1|2014-11-20|

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法律状态:
2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

2019-12-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

2020-08-18| B09A| Decision: intention to grant|

2020-12-01| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/05/2014, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

EP13167964.9|2013-05-16|

EP13167964|2013-05-16|

PCT/EP2014/059302|WO2014184065A1|2013-05-16|2014-05-07|Shaving head with pivotable shaving unit|

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