• 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:
    Crimp insert on a support, comprising a body (3) having: - a shaft (4) extending along a longitudinal axis (A) and having a crimping section (6) configured to deform into a bead crimping tool for crimping the insert on the support, and - a flange (5) having a surface (13) oriented towards the crimping section (6) and extending along an axis (B) perpendicular to the longitudinal axis (A), the collar (5) having a thickness (18) constant and having a fold (14) forming a groove (15) on the surface (13) and intended to receive a seal (16) .
    公开号:FR3063121A1
    申请号:FR1751385
    申请日:2017-02-22
    公开日:2018-08-24
    发明作者:Norbert Perroud；Nicolas Begel
    申请人:Bollhoff Otalu SA；
    IPC主号:
    专利说明:

    Technical field of the invention
    The invention relates to inserts to be crimped on a support, and more particularly the sealing between an insert and a support.
    io State of the art
    Currently, inserts to be crimped on a support and gaskets adapted to the inserts are used to seal between the insert and the support.
    For example, there may be mentioned inserts having a barrel, a flange, also called a support head, and a seal molded onto the insert. Such a seal is deposited around the barrel and under the head of the insert, and it is integral with the insert. However, the seal is sensitive and can be damaged when the insert is inserted into its destination housing. In addition, such a seal can become detached when the insert is mounted on a support. Indeed, the fitting of the inserts can generate vibrations and friction which tend to move the seal, resulting in a loss of the desired seal. This phenomenon is further amplified when the inserts are lubricated for the needs of the automobile, or when the inserts are subjected, after their installation, to surface treatments in a high-temperature bath, or to the application of a paint or varnish.
    We can also cite other crimp inserts which have a collar and an O-ring placed under the collar and around the barrel of the insert. Mention may also be made of inserts which have a collar provided with a groove located under the head in order to accommodate a seal. However, these inserts do not provide sufficient mechanical strength for the support. Indeed, the insert crimped on the support exerts a pressure on the joint, which deforms due to its elasticity, but which, by a spring effect, transmits normal forces on the surface of the support which tend to slightly detach the flange facing the surface of the support. Due to the vibrations encountered during the use of the insert crimped to the support, an untimely detachment of the insert may appear, mechanically characterized by a loss of tension in the assembly.
    Subject of the invention
    An object of the invention is to overcome these drawbacks, and more particularly to provide means which are particularly suitable for obtaining effective mechanical strength between an insert and a support.
    Another object of the invention is to provide means for ensuring an effective seal between the insert and the support.
    According to one aspect of the invention, an insert to be crimped on a support is proposed, comprising a body having:
    - a barrel extending along a longitudinal axis and comprising a crimping section configured to deform into a crimping bead for crimping the insert on the support, and
    - a flange having a surface oriented towards the crimping section and extending along an axis perpendicular to the longitudinal axis.
    The flange has a constant thickness and has a fold forming a groove located on the surface and intended to receive a seal.
    This guarantees contact between the flange and the support to ensure effective mechanical resistance of the insert to the support. In addition, an insert adapted to accommodate a seal is provided which guarantees contact of the collar with the support.
    The surface may have a first part on which the groove is located and a second part located at one end of the flange opposite the barrel, the second part being located in front of the first part relative to the orientation of the surface.
    The thickness of the collar can be greater than or equal to 0.5 mm and strictly less than 2 mm.
    According to another aspect of the invention, there is provided a fixing element, io comprising an insert, as defined above, and a seal housed within the groove of the insert.
    According to yet another aspect of the invention, a fixing assembly is proposed, comprising a fixing element, as defined above, and a support on which the fixing element is crimped.
    The support can have a thickness of between 0.5 and 8 mm inclusive.
    According to other aspects of the invention, methods of manufacturing the parts are proposed as defined above.
    It is therefore proposed a method of manufacturing an insert to be crimped onto a support, comprising a step in which an insert is provided comprising a body having:
    - a barrel extending along a longitudinal axis and comprising a crimping section configured to deform into a crimping bead for crimping the insert on the support, and
    - a flange having a surface oriented towards the crimping section and extending along an axis perpendicular to the longitudinal axis.
    The method includes a step of folding the collar so as to keep the thickness of the collar constant and to form a groove located on the surface.
    A method of manufacturing a fastening element is also proposed, comprising a manufacturing of an insert as defined above, and a step of housing a seal within the groove of the insert. .
    A method of manufacturing a fixing assembly is also proposed, comprising the manufacturing of a fixing element as defined above and a step of crimping the fixing element onto a support.
    Brief description of the drawings
    Other advantages and characteristics will emerge more clearly from the description which follows of particular embodiments and implementation of the invention given by way of nonlimiting examples and represented in the appended drawings, in which:
    - Figure 1 schematically illustrates a sectional view of an embodiment of a crimp insert according to the invention before crimping; and
    - Figure 2 schematically illustrates a sectional view of the insert of Figure 1 crimped on a support.
    detailed description
    In Figures 1 and 2, there is shown an insert 1 to be crimped onto a support 2. The support 2 may be made of metal or of composite material. Preferably, the insert 1 and the support 2 are made of metal, for example steel.
    Insert 1 can be a nut, a rivet, a screw or stud, or a spacer. A nut is a hollow threaded part, that is to say which has an internal thread, intended to receive another threaded part. A rivet is an assembly element for flat parts, swollen at one end and the other end of which is crushed. A screw or stud is a threaded part, that is to say which has an external thread. A spacer is a connecting piece intended to be placed transversely between the support 2 and a secondary piece. A spacer allows, in particular, to maintain a constant spacing between the support 2 and the secondary part. The spacer may also include a tapped section with internal thread.
    The insert 1 comprises a body 3 having a barrel 4 and a flange 5. For example, the body 3 is in one piece. The barrel 4 extends along a longitudinal axis A and comprises a crimping section 6 configured to deform into a crimping bead 7, illustrated in FIG. 2. The crimping bead 7 makes it possible to crimp the insert 1 on the support 2. The barrel 4 has a generally cylindrical shape. The term “cylinder” is understood here to mean a solid limited by a cylindrical surface generated by a straight line, denoted generator, traversing a closed planar curve, denoted director, and two planes intersecting the generators. The cylindrical surface of the barrel 4 may have one or more faces, so as to have a section whose external edge is polygonal, for example hexagonal or square. The cylindrical surface of the barrel 4 may have a section whose external edge is oblong, for example elliptical. Preferably, the body 3 has the shape of a hollow cylinder delimiting an orifice 7 passing through or blind at a distal end of the barrel 4. The barrel 4 may also include a tapped section 8 adjacent to the crimping section 6. The tapped section 8 has an internal thread 9 intended to receive a threaded part to be aimed at the insert 1. The insert 1 thus comprises, in the order along a direction of the longitudinal axis A, the flange 5, the crimping section 6, the tapped section 8 and a distal end 10 of the barrel 4.
    The flange 5 is intended to come into contact with a receiving surface 11 of the support 2 when the insert 1 is crimped to the support 2. The flange 5 extends along a transverse axis B. The transverse axis B is perpendicular to the longitudinal axis A. In addition, the flange 5 has a proximal surface 12 and a distal surface 13 opposite the proximal surface 12. The proximal surface 12 is oriented in a direction opposite to the direction of the longitudinal axis A of the barrel 4. Conversely, the distal surface 13 is oriented in the direction of the longitudinal axis A. In other words, the distal surface 13 is oriented towards the crimping section 6. Furthermore, the flange 5 has a fold 14 forming a groove 15 located on the distal surface 13. The groove 15 is intended to receive a seal 16. The seal 16 provides a seal for a fixing assembly comprising the support 2, the insert 1 and the seal 16. In particular, the seal 16 ensures th sealing against fluids, such as water, oil, glycol, and more generally gases, such as air. The seal 16 is intended to be interposed between the receiving surface 11 of the support 2 and the distal surface 13. For example, the seal 16 is made of a material different from that of the insert
    1. In general, the seal 16 is made of a deformable material, for example plastic or an elastomeric material, for example natural or synthetic rubbers. The seal 16 has a generally toric shape. The seal 16 can be mounted on the insert 1 to form a fastening element 17.
    In addition, the fold 14 of the flange 5 allows the flange 5 to be in contact with the receiving surface 11 of the support 2 when the insert 1 is crimped to the support 2.
    More particularly, the distal surface 13 has a first part 13a on which the groove 15 is located, and a second part 13b located at one end of the flange 5 opposite the barrel 4. The flange 5 has another opposite end in contact with the barrel 4. The groove 15 is located between the barrel 4 and the second part 13b of the distal surface 13. Thus, when the insert 1 is crimped onto the support 2, as illustrated in FIG. 2, the fold 14 makes it possible to maintain contact of the flange 5 with the receiving surface 11 of the support 2. Such contact makes it possible to maintain a constant pressure over time and promotes the mechanical strength of the insert 1 on the support 2. In addition, the groove 15 allows to accommodate the seal 16 while maintaining contact between the two facing surfaces
    13b, 11 and avoids the lifting phenomenon of the flange 5 due to the spring effect of the seal 16 when the latter is compressed during crimping. Thus, the mechanical resistance of the insert 1 is improved while ensuring an effective seal.
    More particularly, the collar 5 has a constant thickness 18. Thus, the groove 15 can be produced by folding the collar 5. The folding also forms the fold 14. In other words, the collar 5 is deformed to form the fold 14 at an angle 19 determined relative to the transverse axis. B. The folding can be carried out by compressing the flange 5 along the transverse axis B. It is also possible to use a matrix placed opposite the distal surface to promote the formation of the groove 15 during folding. Thanks to the folding, the groove 15 can be produced without using a particular step of striking the flange 5. The term constant thickness of the flange 5 means a thickness whose value is maintained along the transverse axis B. This is that is, a first part of a collar 5 joining the barrel 4 to the fold 14 has the same thickness as a second part of a collar 5 joining the fold 14 at the end of the collar 5 opposite the barrel 4. Advantageously, or can create, during folding and using a suitable matrix, radial folds located on the distal surface 13 extending from the barrel 4 at the opposite end of the flange 5. These radial folds make it possible to stiffen the flange 5 while maintaining a constant thickness along the transverse axis B. Such folding is particularly suitable when the flange 5 has a small thickness. By thin thickness is meant a thickness 18 greater than or equal to 0.5 mm and strictly less than 2 mm. Preferably, the thickness 18 is strictly less than 1.5 mm. Indeed, during a formation of a groove by striking on a flange having a small thickness, the striking tool can break because it is not suitable for small thicknesses. Indeed, the stresses generated by the impactor intended for large thicknesses may be greater than the tensile strength of the tool because the thickness of the flange is small and does not sufficiently absorb the energy generated by such constraints.
    The insert 1 is to be crimped, that is to say that it is mounted on the support 2 by a crimping operation. Crimping consists in deforming insert 1, by pulling δ
    or by pressing, for example in press, at the distal end of the barrel 4, to form the crimping bead 7 which comes into contact with the support 2 in order to wedge the support 2 between the flange 5 of the insert 1 and the bead of crimping 7, which makes it possible to fix the insert 1 to the support 2. More particularly, the crimping bead 7 comes into contact with a surface 20 of the support 2 opposite the receiving surface 11.
    In Figure 2, there is also shown a fastening assembly 21 comprising the support 2 and the fastening element 17 crimped on the support 2. In particular, an orifice is previously formed within the support 2 to introduce the insert 1 to crimp. The support 2 has a thickness 22 of between 0.5 and 8 mm inclusive.
    In addition, methods of manufacturing the insert 1, the fastening element 17 and the fastening assembly 21 are proposed as defined above. The process for manufacturing the insert 1 to be crimped onto the support 2 comprises a step in which an insert is provided comprising a body having:
    - a barrel extending along a longitudinal axis and comprising a crimping section configured to deform into a crimping bead for crimping the insert on the support, and
    - a flange having a surface oriented towards the crimping section and extending along an axis perpendicular to the longitudinal axis.
    The method further comprises a step of folding the collar so as to keep the thickness of the collar constant and to form a groove located on the surface.
    The method of manufacturing the fixing element 17 comprises a step of housing a seal 16 within the groove 15 of the insert 1.
    The method of manufacturing the fixing assembly 21 comprises a step of crimping the fixing element 21 on the support 2.
    The elements and their manufacturing methods which have just been described are particularly suitable for the automobile, naval or aeronautical industry ...
    权利要求:
    Claims (9)
    [1" id="c-fr-0001]
    Claims
    1. Crimp insert on a support (2), comprising a body (3) having:
    - a barrel (4) extending along a longitudinal axis (A) and comprising a crimping section (6) configured to deform into a crimping bead (7) for crimping the insert on the support (2 ), and
    - a collar (5) having a surface (13) oriented towards the crimping section (6) and extending along an axis (B) perpendicular to the longitudinal axis (A), characterized in that the collar (5) has a constant thickness (18) and has a fold (14) forming a groove (15) located on the surface (13) and intended to receive a seal (16).
    [2" id="c-fr-0002]
    2. Insert according to claim 1, wherein the surface (13) has a first part (13a) on which the groove (15) is located and a second part (13b) located at one end of the flange (5) opposite to the barrel (4), the second part (13b) being located in front of the first part (13a) relative to the orientation of the surface (13).
    [3" id="c-fr-0003]
    3. Insert according to claim 1 or 2, wherein the thickness (18) of the flange (5) is greater than or equal to 0.5 mm and strictly less than 2 mm.
    [4" id="c-fr-0004]
    4. Fastening element, comprising an insert according to one of claims 1 to 3, and a seal (16) housed within the groove (15) of the insert.
    [5" id="c-fr-0005]
    5. Fastening assembly, comprising a fastening element according to claim 4 and a support (2) on which the fastening element is crimped.
    [6" id="c-fr-0006]
    6. The assembly of claim 5, wherein the support (2) has a thickness (22) between 0.5 and 8 mm inclusive.
    [7" id="c-fr-0007]
    7. Method for manufacturing an insert to be crimped on a support (2), comprising a step in which an insert (1) is provided comprising a body (3) having:
    - a barrel (4) extending along a longitudinal axis (A) and comprising a crimping section (6) configured to deform into a bead of
    5 crimping (7) for crimping the insert (1) on the support (2), and
    - a flange (5) having a surface (13) oriented towards the crimping section (6) and extending along an axis (B) perpendicular to the longitudinal axis (A), characterized in that it comprises a step of folding the collar (5) so as to keep the thickness (18) of the collar (5) constant and to form a groove (15) located on the surface (13).
    [8" id="c-fr-0008]
    8. A method of manufacturing a fixing element (17), comprising manufacturing an insert (1) according to claim 7, and a step of housing a
    15 seal (16) within the groove (15) of the insert (1).
    [9" id="c-fr-0009]
    9. A method of manufacturing a fixing assembly (21), comprising manufacturing a fixing element (17) according to claim 8 and a step of crimping the fixing element (17) on a support (2 ).
    1/2
    V
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    同族专利:
    公开号 | 公开日
    CN108457969A|2018-08-28|
    EP3366932A1|2018-08-29|
    FR3063121B1|2019-03-29|
    EP3366932B1|2021-10-27|
    US20180238369A1|2018-08-23|
    US10920813B2|2021-02-16|
    引用文献:
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    法律状态:
    2018-02-27| PLFP| Fee payment|Year of fee payment: 2 |
    2018-08-24| PLSC| Publication of the preliminary search report|Effective date: 20180824 |
    2020-02-28| PLFP| Fee payment|Year of fee payment: 4 |
    2021-02-25| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1751385|2017-02-22|
    FR1751385A|FR3063121B1|2017-02-22|2017-02-22|CRYSTAL INSERT, ELEMENT AND FIXING ASSEMBLY COMPRISING SUCH AN INSERT AND METHODS OF MANUFACTURING SUCH PIECES.|FR1751385A| FR3063121B1|2017-02-22|2017-02-22|CRYSTAL INSERT, ELEMENT AND FIXING ASSEMBLY COMPRISING SUCH AN INSERT AND METHODS OF MANUFACTURING SUCH PIECES.|
    US15/887,100| US10920813B2|2017-02-22|2018-02-02|Insert to be crimped, fixing part and assembly comprising one such insert and methods for manufacturing such parts|
    CN201810133145.7A| CN108457969A|2017-02-22|2018-02-09|Insertion piece, fixed component and fixation kit and its manufacturing method|
    EP18157053.2A| EP3366932B1|2017-02-22|2018-02-16|Crimping insert, attachment element and assembly comprising such an insert and methods for manufacturing such parts|
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