• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Connector (1) for connecting two members, comprising: A body (2) made of composite material made of reinforcing fibers embedded in a resin plastic matrix (6b), for interconnecting the two members, and having a housing (4) - a mounting ring (7) installed in the housing (4), - a ball (3) installed in the mounting ring (7) and able to allow, by swiveling in, a possibility of articulation between the two members to be connected, the ball joint serving as a fixing zone for one of the two members, characterized in that: - the reinforcing fibers form, with the resin, folds (6a) which, when stacked, constitute a laminate, and - the mounting ring (7) is fixed in the housing (4) of the body (2) of the connector (1), so as to prevent any relative movement of the mounting ring (7) with respect to the body (2) of the connector (1).
    公开号:FR3067073A1
    申请号:FR1754984
    申请日:2017-06-06
    公开日:2018-12-07
    发明作者:Florent Fauchery；Anthony Jerome；Nicolas Marotel；Noemie PERON；Arnaud Turmeau
    申请人:SKF Aerospace France SAS；
    IPC主号:
    专利说明:

    CONNECTOR WITH INTEGRATED BALL JOINT
    TECHNICAL FIELD OF THE INVENTION
    The invention relates to a connector comprising a body made of composite material, such as a fitting, used to connect two members together.
    PRIOR ART
    Traditionally, in the aeronautical field, metal fittings are used, made for example of aluminum, titanium or steel, and comprising a metal spherical ball joint which makes it possible to connect two members together while allowing a relative movement of swiveling of a member compared to each other. This is the case, for example, for a fitting for attaching a thrust reverser to an aircraft turbine.
    However, the use of a fitting made of composite material, that is to say of plastic material reinforced with fibers such as carbon fibers, is particularly advantageous for areas where weight gain is essential, such as for example in aeronautics.
    Furthermore, it is known from JP60151414A to produce an arm made of plastic material reinforced with fibers and comprising a spherical ball joint, by stacking successive layers of pre-impregnated fabrics in two half molds and around the ball joint. However, the implementation of this part is complex, long, and requires a lot of manipulation.
    Consequently, improvements are possible.
    SUMMARY OF THE INVENTION
    The object of the invention is to provide a connector comprising a body of composite material consisting of reinforcing fibers embedded in a plastic matrix, to connect two members together while allowing a possibility of swiveling between them by means of a ball joint integrated in the connector body.
    According to the invention, the fibers of the connector body are continuous and form, with the resin, folds or plies which are stacked in parallel layers to form a laminate. In addition, the connector body includes a housing for accommodating a mounting ring in which the ball joint is formed which can pivot in the mounting ring.
    Still according to the invention, the mounting ring is fixed in a housing in the body of the connector so as to prevent any relative movement of the mounting ring relative to the body of the connector.
    Thanks to the invention, the connector can ensure optimal force transmission between the two members connected by the connector while avoiding premature degradation of the body of the connector, for example by delamination of the plies of the laminate by opening effect.
    According to other aspects of the invention which are advantageous but not compulsory, such a connector can incorporate one or more of the following characteristics:
    - The mounting ring comprises on its inner periphery a spherical surface in shape conformity with a spherical surface of the outer periphery of the ball;
    - the mounting ring collects opening constraints generated by the swiveling of the ball joint;
    - a solid lubricant is placed on or integrated into the spherical surface of the mounting ring, in order to facilitate the swiveling of the ball joint in the mounting ring;
    - The mounting ring exerts a compressive force on a first and a second portion of the body of the connector in order to maintain mechanical cohesion between the plies of the laminate and the matrix to avoid delamination of the body of the connector;
    - The mounting ring has on its outer periphery a shoulder bearing against the first portion of the body of the connector, and a tapped surface which can accommodate a tightening nut which, by its tightening against the second portion of the body of the connector, makes it possible to create compression force;
    - The mounting ring comprises, beyond a central portion in contact with the housing of the body of the connector, two lateral flanges bearing on the portions of the body, so as to exert on said portions a retaining force;
    - the mounting ring is in the form of a self-lubricating fabric formed from a fabric impregnated with a binder and containing lubricating fibers and structuring fibers to support the external loads transmitted to the connector, in particular the stresses 'opening;
    - the mounting ring consists of a solid ring made of BMC material and fixed in the housing of the connector body by gluing or overmolding;
    the mounting ring comprises, beyond a slightly concave cylindrical central portion in contact with a slightly convex cylindrical portion of the housing of the connector body, two oblique portions each located on either side of the central portion and also resting in the housing of the connector body.
    BRIEF DESCRIPTION OF THE DRAWINGS
    The invention will now be explained using the accompanying drawings, by way of example, without any restriction as to the subject of the invention. In the accompanying drawings:
    - Figure 1 shows a perspective view of a first embodiment, in the form of a fitting;
    - Figure 2 shows an enlarged view of the attachment zone of the fitting of Figure 1, in longitudinal section along a section plane comprising the axis of the housing;
    - Figure 3 shows a second embodiment;
    - Figure 4 shows a third embodiment;
    - Figure 5 shows a fourth embodiment; and
    - Figure 6 shows a fifth embodiment.
    DETAILED DESCRIPTION OF EMBODIMENTS
    Figures 1 and 2 show a connector 1 comprising a body 2 of composite material consisting of reinforcing fibers embedded in a plastic matrix 6b. The fibers are advantageously made of carbon, but can be made of another material such as glass. The plastic matrix 6b is made of thermosetting resin, for example epoxy, but other materials such as thermoplastic resins such as PA66 can be used.
    The connector 1 also includes a fixing zone for a first member (not shown) to be connected, for example in the form of a base
    5. Means for fixing (not shown) the first member to the connector 1 can take the form of screws or rivets.
    The body 2 of the connector 1 comprises a housing 4 of axis X1 which receives a mounting ring 7. The mounting ring 7 carries in its bore a ball joint 3 of axis X2.
    The ball 3 serves as a fixing zone for a second member (not shown) to be connected by means of the connector 1.
    The ball 3 is trapped in the mounting ring 7 but with a permanent play, so as to be able to swivel in the mounting ring 7. This allows the two members to be rigidly connected while allowing a possibility of articulation between the two members. connect, by swiveling the ball joint in the mounting ring 7.
    The ball joint 3 comprises on its outer periphery a spherical surface 3a and on its inner periphery a bore 3b of axis the axis of the ball joint X1 and by which the second member is connectable.
    The fibers are continuous and form, with the resin, folds or plies 6a. These folds 6a are stacked so as to consist of a laminate, as visible in FIG. 2 which represents a longitudinal section of the connector 1 according to the plane which comprises the axis X1 of the housing 4 and which is parallel to the folds 6a. Advantageously, by simplicity of manufacture of the body 2 of the connector 1, the folds 6a are parallel to each other. In addition, the folds 6a extend over the entire length of the body 2, except in the area of the housing 7 in which they are partially interrupted in order to obtain the housing 4, for example by removing material.
    In order to guarantee optimum tensile and compressive strength, the folds 6a are perpendicular to the axis X1 of the housing 4, at least in the region of the body 2 around the housing 4 extending over a few millimeters or tens of millimeters .
    The mounting ring 7 is fixed in the housing 4 of the body 2 of the connector 1, so as to prevent any relative movement of the mounting ring 7 relative to the body 2 of the connector 1.
    The mounting ring 7 comprises on its inner periphery a spherical surface 7a in shape conformity with the spherical surface 3a of the outer periphery of the ball joint 3.
    If the ball joint 3 was in direct contact with the body 2 of the connector 1 and its folds 6a, the repeated efforts generated during the swiveling of the ball joint would eventually risk delaminating the composite material constituting the body 2 of the connector 1, particularly in the area around the patella 3. In particular, it is the opening forces, defined as the results along the axis X2 of the housing 4 of the forces between the patella and the second member attached thereto, which would be the most penalizing.
    It is therefore the mounting ring 7, and not the body 2 itself, which collects the opening constraints.
    Advantageously, in order to facilitate the swiveling of the ball joint 3 in the mounting ring 7, a lubricant, such as a grease, is placed between the ball joint and the mounting ring 7. Alternatively or additionally, a solid lubricant, placed on or integrated in the spherical surface 7a of the mounting ring 7 is advantageously used, in order to further facilitate the swiveling of the ball joint in the mounting ring 7. This solid lubricant can be in the form of a deposit or of microscopic particles, for example in PTFE material.
    In the embodiment of Figures 1 and 2, the mounting ring 7 is in the form of a ring having on its outer periphery a shoulder 8 bearing against a first portion 2a of the body 2 of the connector 1, and a surface threaded which can accommodate a tightening nut 9. The tightening of the nut 9, via an elastic washer 10, against a second portion 2b of the body 2 of the connector 1 creates a compression force F1. Advantageously, the first 2a and second 2b portions of the body 2 on which the compression force F1 is generated are plane, parallel to each other, and parallel to the folds 6a of the laminate.
    These first 2a and second 2b portions of the body 2 are connected to the housing 4 of the body 4 by two edges 2c, 2d.
    Thanks to the compression force F1 exerted on the first 2a and second 2b portions of the body 2 of the connector 1, the resistance to delamination of the body 2 or the rupture of the plastic matrix 6b is further reinforced, in particular at the edges 2c, 2d which are the most fragile areas of the body 2 of the connector 1.
    This permanent compression force F1 makes it possible to maintain mechanical cohesion between the fibers and the matrix 6b.
    This compression force F1 is directed in a direction perpendicular to the planes of the folds 6a.
    In the embodiment of Figures 1 and 2, the outer periphery of the mounting ring 7 consists of a cylindrical surface in shape with a cylindrical surface formed in the housing 4 of the body.
    FIG. 3 illustrates a second embodiment, the elements identical to the first embodiment illustrated in FIGS. 1 and 2 bearing the same references. This second mode differs from the first mode in that the mounting ring 7 is in the form of a self-lubricating fabric. The self-lubricating fabric is fixed in the housing 4 of the body 2 of the connector 1 by any suitable means, preferably by gluing.
    The self-lubricating fabric is made from a fabric impregnated with a binder constituted by a resin, and contains lubricating fibers and structuring fibers to support the external loads transmitted to the connector 1, in particular the opening forces described above. Such a self-lubricating fabric is described in document EP2955400A1, the content of which is incorporated herein by reference.
    The self-lubricating fabric can, under the effect of the swiveling of the ball joint 3, elongate punctually in the axial direction (parallel to the axis X1 of the housing 4) so as to avoid the transmission, at the level of the housing 4, of stresses openings at the folds 4a of the laminate.
    FIG. 4 illustrates a third embodiment, in which the mounting ring 7 comprises, beyond a central portion 11 in contact with the housing 4 of the body 2 of the connector 1, two lateral flanges 12 and 13 resting on the portions 2a and 2b of the body 2. The two flanges 12 and 13 exert on the portions 2a and 2b of the body 2 a retaining force F2. This retaining force F2 can be obtained for example by plastic deformation of the flanges 12 and 13 by means of an appropriate tool.
    In this embodiment, the mounting ring 7 can be made of metallic material or of structuring composite material, or a mixture of the two. The retaining force F2 is perpendicular to the folds 6a of the laminate 6a.
    In another embodiment, not shown, a self-lubricating fabric 7 as described above for the second embodiment can be associated with a mounting ring 7 as described above for the third embodiment, the self-lubricating fabric being fixed in the bore of the mounting ring 7.
    FIG. 5 illustrates a fourth embodiment which differs from the modes described above in that the mounting ring 7 consists of a solid ring made of BMC material (Bulk Molding Comportent in English). This BMC material is obtained by mixing reinforcing fibers, preferably carbon or glass, with a thermosetting resin, preferably polyester or epoxy. The reinforcing fibers are long fibers, that is to say that they each measure at least 1 millimeter. Fibers or nodules of solid lubricant such as PTFE can also be incorporated, this in order to facilitate the swiveling of the ball 3 in the mounting ring 7.
    The mounting ring 7 made of BMC material is obtained directly by compression molding, possibly followed by machining steps in order to give it complex shapes. The BMC mounting ring 7 can alternatively be obtained by injection molding.
    In this embodiment, the outer periphery of the mounting ring 7 is constituted by a cylindrical surface in shape conformity with a cylindrical surface formed in the housing 4 of the body.
    In addition, the mounting ring 7 is advantageously fixed in the housing 4 of the body 2 of the connector by any suitable means, and preferably by gluing or overmolding.
    FIG. 6 illustrates a fifth embodiment, derived from the fourth embodiment illustrated in FIG. 5. The mounting ring 7 comprises, beyond a central cylindrical portion 11 slightly concave in contact with a cylindrical portion slightly convex of the housing 4 of the body 2 of the connector 1, two oblique portions 14 and 15 each located on either side of the central portion 11. The two oblique portions are also supported in the housing 4 of the body 2, against portions in conformity of shape . Each portion 14, 15 has, in a direction perpendicular to the axis X2 of the housing 4, a thickness which increases in the direction of the exterior of the housing 4. This geometrical feature makes it possible not only to reinforce the axial resistance of the body 2 in the area mounting the ball 3, but also, by wedge effect, to transmit to the laminate a closing force.
    The invention has been described for a two-member attachment fitting, for example fitted to an aircraft. As an indication, such a fitting connects a reactor thrust reverser to the nacelle of the reactor.
    The invention has been described for a two-member fastening fitting, but could quite well be implemented to connect three or more members to each other.
    Furthermore, the invention could be applied to a different type of connector than a fitting, for example a connecting rod end or a shackle, also for an application in the aeronautical field or any other technical field.
    In addition, the technical characteristics of the various embodiments of the invention may, in whole or in part, be combined with one another. Thus, the connector can be adapted to the specific needs of the application for which it is intended to be used.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Connector (1) for connecting two members, comprising:
    A body (2) made of composite material consisting of reinforcing fibers embedded in a plastic matrix (6b) made of resin, to connect the two members together, and having a housing (4), a mounting ring (7) installed in the housing (4), a ball joint (3) installed in the mounting ring (7) and capable of allowing, by swiveling in, a possibility of articulation between the two members to be connected, the ball joint serving as a fixing zone for the one of the two members, characterized in that:
    the reinforcing fibers form, with the resin, folds (6a) which, when stacked, constitute a laminate, and the mounting ring (7) is fixed in the housing (4) of the body (2) of the connector (1 ), so as to prevent any relative movement of the mounting ring (7) relative to the body (2) of the connector (1).
    [2" id="c-fr-0002]
    2. Connector (1) according to claim 1, characterized in that the mounting ring (7) comprises on its inner periphery a spherical surface (7a) in shape conformity with a spherical surface (3a) of the outer periphery of the ball joint (3).
    [3" id="c-fr-0003]
    3. Connector (1) according to one of the preceding claims, characterized in that the mounting ring (7) collects opening stresses generated by the swiveling of the ball joint (3).
    [4" id="c-fr-0004]
    4. Connector (1) according to one of the preceding claims, characterized in that a solid lubricant is disposed on or integrated into the spherical surface (7a) of the mounting ring (7), in order to facilitate the swiveling of the ball joint (3) in the mounting ring (7).
    [5" id="c-fr-0005]
    5. Connector (1) according to one of the preceding claims, characterized in that the mounting ring (7) exerts a compressive force (F1) or a retaining force (F2) on a first (2a) and a second (2b) body portions (2) of the connector (1), in order to maintain mechanical cohesion between the fibers and the matrix (6b) to avoid delamination of the body (2) of the connector (1).
    [6" id="c-fr-0006]
    6. Connector (1) according to claim 5, characterized in that the mounting ring (7) has on its outer periphery a shoulder (8) bearing against the first portion (2a) of the body (2) of the connector (1 ), and a tapped surface which can accommodate a tightening nut (9) which, by tightening against the second portion (2b) of the body (2) of the connector (1), makes it possible to create the compressive force (F1).
    [7" id="c-fr-0007]
    7. Connector (1) according to claim 5, characterized in that the mounting ring (7) comprises, beyond a central portion (11) in contact with the housing (4) of the body (2) of the connector (1), two lateral flanges (12) and (13) bearing on the portions (2a) and (2b) of the body (2), so as to exert on said portions (2a) and (2b) the retaining force (F2).
    [8" id="c-fr-0008]
    8. Connector (1) according to one of the preceding claims, characterized in that the mounting ring (7) is in the form of a self-lubricating fabric formed from a fabric impregnated with a binder and containing lubricating fibers and structuring fibers to support the external loads transmitted to the connector (1), in particular the opening constraints.
    [9" id="c-fr-0009]
    9. Connector (1) according to one of claims 1 to 7, characterized in that the mounting ring (7) consists of a solid ring made of BMC material and fixed in the housing (4) of the body (2) of the connector (1) by gluing or overmolding.
    [10" id="c-fr-0010]
    10. Connector (1) according to one of claims 9, characterized in that the mounting ring (7) comprises, beyond a central portion (11) cylindrical slightly concave in contact with a cylindrical portion slightly convex of housing (4) of the body (2) of the connector (1), two oblique portions (14) and (15) each located on either side of the central portion (11) and also bearing in the housing (4) the body (2) of the connector (1).
    类似技术:
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    同族专利:
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    US10167439B2|2016-06-01|2019-01-01|Minebea Mitsumi Inc.|Ultraviolet curable resin composition and sliding member|
    US20170368552A1|2016-06-27|2017-12-28|Jacobs Corporation|Spherical Joint for Hammer Mills|
    US10641303B2|2016-12-13|2020-05-05|Aktiebolaget Skf|Connector assembly fitting with co-molded washers|US10634092B2|2017-09-08|2020-04-28|United Technologies Corporation|Linkage assembly preventing axial rotation of the link rod|
    FR3094048B1|2019-03-18|2021-04-23|Skf Aerospace France|Connecting element, and method of manufacturing a ring for such a connecting element|
    法律状态:
    2018-06-29| PLFP| Fee payment|Year of fee payment: 2 |
    2018-12-07| PLSC| Publication of the preliminary search report|Effective date: 20181207 |
    2020-06-26| PLFP| Fee payment|Year of fee payment: 4 |
    2021-06-25| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1754984A|FR3067073B1|2017-06-06|2017-06-06|CONNECTOR WITH INTEGRATED BALL|
    FR1754984|2017-06-06|FR1754984A| FR3067073B1|2017-06-06|2017-06-06|CONNECTOR WITH INTEGRATED BALL|
    CN201810478719.4A| CN108999883A|2017-06-06|2018-05-18|Connector with integrated rotary joint|
    US15/983,164| US11268566B2|2017-06-06|2018-05-18|Connector with integrated swivel|
    DE102018208552.8A| DE102018208552A1|2017-06-06|2018-05-30|Connector with integrated swivel|
    GB1809218.9A| GB2564558B|2017-06-06|2018-06-05|Connector with integrated swivel|
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