• 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:
    This snap fastening device comprises: - a first latching member (10) having a tab (16) extending along a longitudinal axis (L), between a base and a free end, the first latching member ( 10) having at least one locking surface (26) carried by the tab (16), the locking surface (26) being oblique with respect to the longitudinal axis (L); a second detent member (12) delimiting a receiving space (32) of the first detent member (10), the first detent member (10) being configured to fit along the longitudinal axis (L); ) in the receiving space (32), the second detent member (12) comprising at least one detent element (50) disposed within the receiving space (32) and configured to engage taken with the locking surface (26).
    公开号:FR3028577A1
    申请号:FR1461195
    申请日:2014-11-19
    公开日:2016-05-20
    发明作者:Dominique Duchet
    申请人:Faurecia Interieur Industrie SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the field of snap-fastening devices. FR 2 796 999 discloses a snap-fastening device comprising a first detent member comprising a latching lug having a through hole and a second latching member comprising a U-shaped detent fastener, the latches of which branches delimit between them a receiving space of the tab and have claws for insertion into the orifice to lock the first latching member on the second latching member. One of the aims of the invention is to propose a snap-fastening device which allows reliable fixing and which facilitates possible maintenance operations. For this purpose, the invention proposes a snap-fastening device comprising a first detent member having a lug extending along a longitudinal axis, between a base and a free end, the first detent member having at least one locking surface carried by the tab, the locking surface being oblique with respect to the longitudinal axis; and a second latching member defining a receiving space of the first latching member, the first latching member being configured to insert along the longitudinal axis in the receiving space, the second latching member comprising at least one detent member disposed within the receiving space and configured to engage the locking surface. The snap-fastening device optionally comprises one or more of the following features, taken singly or in any technically feasible combination: - the locking surface is at an angle of between 95 ° and 150 ° to the longitudinal axis, in particular an angle of between 95 ° and 135 °; the first latching member has a locking protrusion projecting from the tab and having a face facing towards the base defining the locking surface; - The second latching member comprises a U-shaped fastener comprising two branches delimiting between them the receiving space; - The detent element is a tongue carried by a branch and extending inside the receiving space from the branch; - The detent element is configured to be arched between the leg that carries it and the locking surface when the first latching member latched in the second latching member is subjected to a force of 30 mm. extraction outside the reception area; the detent element has a connecting portion extending from a free end of the branch carrying the detent element towards the junction between the limbs, extended by a locking portion configured to engage the surface; locking device - the locking portion extends the connecting portion by being bent towards the branch carrying the detent element; the locking portion extends obliquely with respect to the longitudinal axis; the tab has a first opposite face and a second face, and bears a locking surface only on its first face, the second locking member having two detent elements arranged to receive the tab between them, each facing a among the first face and the second face; the snap-fastening device is configured in such a way that the snap-in element opposite the second face pushes the tab transversely against the snap-in element opposite the first face when the first snap-in member is inserted in the receiving space and that the locking element facing the first face is engaged with the locking surface; - The lug has an extra thickness on its second side, the latching element opposite the second side pressing the extra thickness; the second detent member is configured to be snapped into a window of a part to be fixed by means of the fixing device and / or the first detent member is integral with a part to be fastened by the intermediate snap fastener; and the second detent member is made of metal or plastic. The invention also relates to a vehicle assembly, comprising a first piece and a second piece intended to be fixed to one another, and a snap-fastening device as defined above, the first piece bearing the first detent member and the second member carrying the second detent member. The invention and its advantages will be better understood on reading the description which will follow, given solely by way of nonlimiting example, and with reference to the appended drawings, in which: FIGS. 1 and 2 are views exploded perspective view of an assembly comprising two parts and a snap-fastening device for fixing the two parts one on the other, according to two different angles of view; Figure 3 is a sectional view of the assembly of assembled Figure 1; and FIG. 4 is a perspective view of a detent member of the snap-fastening device of FIGS. 1 to 3. The assembly 2 illustrated in FIGS. 1 to 3 comprises a first part 4, a second part 6 , and a snap fastener 8 for fixing the first part 4 and the second part 6 one on the other. The first part 4 and the second part 6 are for example parts of vehicles, including vehicle trim parts. In one embodiment, the first piece 4 is decorative insert and the second piece 6 is a vehicle skin, for example a dashboard. The snap-fastener 8 comprises a first complementary snap-fastener 10 and a second snap-fastener 12, provided for snap-fastening to one another. The first latching member 10 is fixed on the first piece 4 and the second fixing member 12 is configured to be fixed on the second piece 6. The first latching member 10 is configured to be inserted along a longitudinal axis L in the second detent 12 and snap into it. The first latching member 10 extends projecting from the first piece 4. The first latching member 10 is formed of a single piece of material with the first piece 4, in particular a single piece of plastic material. In one embodiment, the first part 4 is made by molding (for example compression molding or injection molding), and the first latching member 10 is thus molded with the first part. The second latching member 12 is distinct from the second piece 6. The second latching member 12 is attached to the second piece 6 and fixed thereto. The second latching member 12 is here configured to snap onto the second piece 6, more specifically to snap into a window 14 of the second piece 6. The first latching member 10 and the second latching member 12 are configured for removable attachment to one another. Thus, the snap fastener 8 allows the separation of the first part 4 and the second part 6 from each other, for example during any maintenance or replacement operations. The snap fastener 8 is at least partly reusable. The first latching member 10 and the second latching member 12 are configured such that the first latching member 10 is adapted to be extracted from the second latching member 12 without damaging the first latching member. 10 and the second latching member 12. The first latching member 10 comprises a lug 16 extending along the longitudinal axis L between a base, adjacent to the first part 4, and a free end, opposite the first one. piece 4. The base is connected to the first piece 4. The tab 16 is flat. The tab has a first face 16A and a second face 16B opposite. The first latching member 10 comprises two lateral ribs 20 extending along the longitudinal axis L on each of the first face 16A and the second face 16B of the tab 16, along the lateral edges of the tab 16. lateral ribs 20 stiffen the tab 16 flexion. Near the base of the tab 16, the lateral ribs 20 have extensions 22 to reinforce the junction between the tab 16 and the first part 4. In the vicinity of the free end of the tab 16, the first locking member 10 comprises a locking projection 24 on the first face 16A (Figure 1). The locking projection 24 is configured to cooperate with the second latching member 12 to oppose the separation of the first latching member 10 and the second latching member 12. The locking projection 24 protrudes from the first latching member 12. face 16A. The locking projection 24 is a rib. The locking protrusion 24 extends transversely between the two lateral ribs 20 provided on the first face 16A of the lug 16. The lug 16 and the locking projection 24 gives the first detent member 10 a harpoon or hook shape , whose leg forms the rod and the locking projection forms a locking nose. As seen in FIG. 3, the locking projection 24 has a sidewall, facing the base of the tab 16, which defines a locking surface 26. The locking surface 26 is turned towards the base of the tab 16. The surface lock 26 is intended to cooperate with the second latching member 12 to snap the first latching member 10 into the second latching member 12. The locking surface 26 extends obliquely with respect to the latching member 12. longitudinal axis L of the tab 16. The term "obliquely" means that the locking surface 26 is neither parallel nor perpendicular to the longitudinal axis L. The locking surface 26 extends obliquely from the first face 16A of the tab 16 away from the base of the tab 16 and away from the first face 16A of the tab 16.
    [0002] The locking surface 26 forms an obtuse angle with the longitudinal axis L, on the side of the base of the tab 16. The angle a is strictly greater than 90 °. The locking surface 26 makes an angle of between 95 ° and 150 ° with the longitudinal axis L, in particular between 95 ° and 135 °. The latching surface 26 is here at an angle of about 95 ° to the longitudinal axis L. In FIG. 1, the locking projection 24 is formed at a distance from the free end of the tab 16. The first member of FIG. snap-fastening 10 comprises a reinforcing rib 28 extending longitudinally from the locking projection 24 towards the free end of the tab 16. The reinforcing rib 28 has a progressively decreasing height of the locking projection 24 towards the end free of the tab 16. The height of the reinforcing rib 28 is zero at the free end of the tab 16. The reinforcing rib 28 is disposed substantially midway between the two lateral ribs 20 of the first face 16A . The first latching member 10 has no locking protrusion and locking surface on the second face 16B of the lug 16. The first latching member 10 has, on the second face 16B of the lug 16, an extra thickness. The extra thickness is here formed by two longitudinal projections 30. The longitudinal projections 30 are spaced transversely from one another. They are located transversely between the lateral ribs 20. The longitudinal projections 30 have a lower height than those of the lateral ribs 20 provided on the second face 16B. As can be seen in FIG. 4, the second detent 12 defines a receiving space 32 of the first detent member 10. The receiving space 32 extends along the longitudinal axis L between an inlet 34 and a bottom 36. The second latching member 12 comprises a U-shaped elastic fastener 38, having two arms 40 delimiting between them the receiving space 32 intended to receive the first latching member 10. The junction between the linked ends of the branches 40 form the bottom 36 and the opening between the free ends of the branches 40 form the inlet 34 of the receiving space 32. The second locking member 10 is symmetrical with respect to a median longitudinal plane passing between the two branches 40. The second detent 12 is here configured to be snapped onto the second part 6, here in the window 14 of the second part 6. For this purpose, the second detent 12 comprises makes snap-on reliefs provided on the outer faces of the branches 40.
    [0003] More specifically, each branch 40 is provided at its free end with a flange 42 projecting outwardly and, at a distance from the flange 42, shifted towards the bottom 36, an outer shoulder 44 facing the flange 42. The flange 42 is formed by folding the free end of the branch 40 outwards, opposite the other branch 40. The outer shoulder 44 is formed by a recess of the branch 40 to the inside 40. The distance between the flange 42 and the shoulder 44 is substantially equal to the thickness of the edges of the window 14 of the second part 6 in which the second latching member 12 is intended to be latched. In the free state of the second latching member 12, the distance between the tops of the shoulders 44 is greater than the distance between the opposite edges of the window 14. During insertion of the second latching member 12 into the window 14, the second latching member 12 is elastically deformed so that the legs 40 come closer to each other to allow the shoulders 44 to pass the edges of the window 14, and, once the shoulders 44 have beyond the edges of the window 14, the second latching member 12 elastically relaxes, so that each leg 40 engages with one of the opposite edges, via its snap-on reliefs, namely the shoulder 44 and the flange 42. The second latching member 12 is thus locked axially in the window 14. The bottom 36 of the second latching member 12 is provided with a light 46. This allows to adjust the elasticity the second organ of snap. The second latching member 12 comprises two latching elements 50, each carried by a respective branch 40. Each latching element 50 has the shape of a tongue protruding from the branch 40 inside the receiving space 32, to cooperate with the first latching member 10. Each latching element 50 is extends cantilever between an end connected to the branch 40 and a free end. Each latching element 50 is connected to the corresponding branch 40 near the free end of the branch 40, defining the inlet 34, and extends towards the junction between the branches 40, delimiting the bottom 36. Each element detent 50 has a locking portion 52 adapted to engage the locking surface 26 of the first detent 10 to oppose the extraction of the first detent 10 from the second detent 12. Each latching element 50 has a connecting portion 54 connected to the branch 40 and extended by the locking portion 52. The connecting portion 54 moves away from the branch 40 towards the interior of the space of reception, at least its end connected to the locking portion 52. The junction between the connecting portion 54 and the locking portion 52 is shifted inwardly of the receiving space with respect to the branch 40. locking portion 52 is bent from the connecting portion 54, outwardly and is close to the branch 40 carrying the latching element 50. The connecting portion 54 from its end connected to the branch 40 towards the locking portion 52, progressively closer to the longitudinal axis L and then progressively away from the longitudinal axis L. The connecting portion 54 has a top zone which is closest to the longitudinal axis L. The connecting portion 54 here comprises a first section 56 progressively approaching the longitudinal axis L, extended by a second section 58 progressively diverging from the longitudinal axis L, itself extended by the locking portion 52 The summit zone is located between the first section 56 and the second section 58. The locking portion 52 is more inclined than the second section 58 with respect to the longitudinal axis L and moves away more rapidly. ement. From the inlet 34 to the bottom 36 of the receiving space 32, in the free state, the two detent elements 50 are progressively closer to one another (at their first portions 56) then progressively separate from each other (at their second sections 58 and locking portions 52). The first sections 56 of the latching elements 50 converge towards one another towards the junction between the branches 40, then the second sections 58 diverge from one another towards the junction between the branches 40. In the free state of the latching elements 50, the minimum spacing between the latching elements 50, located between their top regions, is smaller than the thickness of the first latching member 10, taken along the first detent member 10 between the base of the tab 16 and the locking projection 24. The detent portion 52 is oblique with respect to the longitudinal axis L. The detent portion 52 is at an angle strictly greater than 90 ° with the longitudinal axis L on the side of the entrance 34 of the reception space. The detent portion 52 is preferably at an angle between 95 ° 150 ° and L are longitudinal, including an angle between 95 ° and 135 °. The locking portion 52 and the locking surface 26 preferably have substantially the same angle with respect to the longitudinal axis L. When inserting the first detent 10 into the second detent 12, the first latching member 10 is inserted between the two latching elements 50 and deforming them elastically outwards to allow the passage of the tab 16 and the locking projection 24.
    [0004] As soon as the locking protrusion 24 has axially protruded the locking portions 52, the detent element 50 located on the side of the locking projection 24 elastically expands and its locking portion 52 engages with the locking surface 52. lock 26 (Figure 3). The latching element 50 and the locking surface 26 cooperate to oppose the extraction of the first latching member 10 from the receiving space 32. The latching element 50 located at the other side of the tab 16 bears on the leg 16, by its summit zone. Thus this locking element 50 remains elastically deformed once the first latching member 10 inserted into the second latching element 12. This latching element 50 exerts on the lug 16 a permanent transverse thrust towards the other This thrust tends to keep the other latching member 50 in engagement with the locking projection 24. As a result, the first latching member 10 and the second latching member 12 are secured to the latching member. one over the other reliably. In addition, this transverse elastic biasing ensures a precise and reliable positioning of the first part 4 relative to the second part 6, in particular in a first transverse direction. In a second transverse direction, perpendicular to the longitudinal axis L and the first transverse direction, the latching elements 50 are received and guided transversely between the lateral ribs 20. Thus, the positioning along the second transverse direction is also precise and reliable. In case of force applied to the first detent member 10 in the extraction direction (arrow E in FIG. 3), because of its re-entrant arrangement from the inlet 34 to the bottom 36, the element The snap-fastener 50 engages the locking surface 26 and rivets between the locking surface 26 and the branch 40 carrying the latching element 50. The snap fastener 8 provides a reliable and efficient hold. The snap fastener 8 is configured to withstand a determined pulling effort. The snap fastener 8 is configured to allow the extraction of the first latching member 10 in case of sufficient extraction force. The inclination of the locking surface 26 relative to the longitudinal axis L allows such a withdrawal. Due to the inclination, an axial extraction force exerted on the first latching member 10 generates a transverse force on the locking portion 52, for retracting the latching element 50. The inclination of the surface locking 26 is chosen to ensure sufficient longitudinal retention in normal operation, while allowing disassembly.
    [0005] The more the angle of inclination of the locking surface 26 with respect to the longitudinal axis L is close to 90 °, the more difficult the extraction is, and the greater the risk of damage to the second locking member 12 during extraction increases. The greater the angle of inclination is 90 °, the easier the extraction, and the risk of damage to the second detent 12 during extraction decreases. On a first range of value of the inclination angle (typically around 99 °), the extraction causes a deterioration of the second locking member 12, and a second range of value of the angle of inclination ( greater than the first value range), the extraction is possible without damaging the second detent member 12. The detent element 50 engaging with the detent projection 24 by a detent portion 52 bent towards the outside of the receiving space can generate a significant retention force, while allowing the latching element to retract during the extraction of the first latching member 10 without being damaged. The shape of the connecting portion 54 of the detent element 50 allows it to deform in a programmed manner by moving outwardly during the extraction of the first detent member 10. The second section 58 oblique approaching the branch 40 in the direction of the junction between the branches 40 allows the connecting portion 54 to deviate Thus, the second detent 12 is reusable. The retaining force between the second latching member 12 and the second part 6 is greater than the extraction force of the first latching member 10 from the second latching member 12. Thus, an extraction force applied on the first part 4 allows to extract the first extraction member 10 of the second latching member 12 while maintaining the second latching member 12 attached to the second part 6. The second latching member 12 is formed metal or plastic. Preferably, the second detent 12 is formed of a single piece of material. In one embodiment, the second latching member 12 is formed of a single piece of material from a metal sheet cut, stamped and / or folded to form the branches 40, the external locking projections (flanges 42 and shoulders 44) and the latching elements 50. In an alternative embodiment, the second latching member 12 is formed of a single piece of material by molding, for example a single piece of plastic material.
    [0006] In a first embodiment, the second fixing member is first fixed on the second piece, then the first latching member is inserted into the second latching member. Preferably, the first detent member is configured such that the first detent member inserted into the second detent member prevents the branches from being brought together. Thus, the first detent member inserted in the second detent member prohibits the extraction of the second latching member of the window in which it is received. In a second embodiment, the second latching member is snapped onto the first latching member before the first piece is fixed to the second piece. During this fixing, the second detent member is fixed by snapping on the second part. Alternative embodiments are possible. In the embodiment of Figures 1 to 4, the tab is provided on one of these two faces with a locking projection. Alternatively, the tab is symmetrical and provided on each side with a locking projection. In this case, each latching element of the second latching member cooperates with a respective locking projection of the first latching member. In the embodiment of Figures 1 to 4, the tab is thinned at its base, at the junction with the first piece. This limits the risk of appearance of shrinkage during the molding of the first part. In the embodiment of Figures 1 to 4, the second piece is provided with clearances on the edges of the window, the clearances being provided to receive the flanges of the second latching member. This brings the first piece into contact with the second piece for improved positioning.
    权利要求:
    Claims (15)
    [0001]
    1. A snap-fastening device comprising: - a first latching member (10) having a lug (16) extending along a longitudinal axis (L), between a base and a free end, the first member of detent (10) having at least one locking surface (26) carried by the tab (16), the locking surface (26) being oblique with respect to the longitudinal axis (L); a second detent member (12) delimiting a receiving space (32) of the first detent member (10), the first detent member (10) being configured to fit along the longitudinal axis (L); ) in the receiving space (32), the second detent member (12) comprising at least one detent element (50) disposed within the receiving space (32) and configured to engage taken with the locking surface (26).
    [0002]
    2. A snap-fastening device according to claim 1, wherein the locking surface (26) makes an angle (a) between 95 ° and 150 ° with the longitudinal axis (L).
    [0003]
    3. A snap-fastening device according to claim 1 or 2, wherein the first latching member (10) has a locking projection (24) projecting from the tab (16) and a face facing towards the base. defines the locking surface (26).
    [0004]
    4. A snap-fastening device according to any one of the preceding claims, wherein the second detent member (12) comprises a U-shaped fastener comprising two branches (40) delimiting between them the receiving space ( 32).
    [0005]
    Snap-fastening device according to claim 4, wherein the detent element (50) is a tongue carried by a branch (40) and extending inside the receiving space (32). ) from the branch (40).
    [0006]
    The snap-fastening device according to claim 5, wherein the snap-in element (50) is configured to bend between the leg (40) which carries it and the locking surface (26) when the first detent member (10) snapped into the second detent member (12) is subjected to an extraction force out of the receiving space (32).
    [0007]
    7. A snap-fastening device according to claim 5 or 6, wherein the detent element (50) has a connecting portion extending from a free end of the limb (40) carrying the element. snap (40) to the junction 3028577 12 between the legs (40), extended by a locking portion (52) configured to engage the locking surface (26).
    [0008]
    8. A snap-fastening device according to claim 7, wherein the locking portion (52) extends the connecting portion being bent towards the branch (40) carrying the detent element (50).
    [0009]
    9. A snap-fastening device according to claim 8, wherein the locking portion (52) extends obliquely with respect to the longitudinal axis.
    [0010]
    10. A snap-fastening device according to any one of the preceding claims, wherein the tab (16) has a first face (16A) and a second opposite face (16B), and carries a locking surface (26) only on its first face (16A), the second locking member (10) having two detent elements arranged to receive the tab (16) between them, each facing one of the first face (16A) and the second face (16B).
    [0011]
    11. A snap-fastening device according to claim 10, configured such that the detent element (50) facing the second face (16B) pushes the lug (16) transversely against the detent element. (50) opposite the first face (16A) when the first latching member (10) is inserted into the receiving space (32) and the detent member (50) facing the first side (16A) is engaged with the locking surface (26).
    [0012]
    12. A snap-fastening device according to claim 11, wherein the tab has an extra thickness on its second face (16B), the latching element facing the second face (16B) pressing the extra thickness.
    [0013]
    13. A snap-fastening device according to any one of the preceding claims, wherein the second detent member is configured to be snapped into a window (14) of a workpiece to be secured through the fastener. and / or the first latching member (10) is integrally formed with a part (4) to be fixed by means of the snap-fastening device.
    [0014]
    14. Fastening device according to any one of the preceding claims, wherein the second detent member is made of metal or plastic.
    [0015]
    Vehicle assembly, comprising a first piece (4) and a second piece (6) to be fixed to one another, and a snap fastener (8) according to any of the claims. previous, the first piece (4) carrying the first latching member (10) and the second piece (6) carrying the second latching member (12).
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    同族专利:
    公开号 | 公开日
    FR3028577B1|2018-02-02|
    CN205225988U|2016-05-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5533237A|1994-09-12|1996-07-09|Emhart, Inc.|Grommet fastener assembly for automobiles|
    EP0873916A1|1997-04-24|1998-10-28|Rover Group Limited|An airbag housing assembly|
    WO2008099243A1|2007-02-12|2008-08-21|Itw Sverige Ab|Fastener for air-bag curtain|
    DE202012004005U1|2011-04-29|2012-07-06|Faurecia Interieur Industrie|Device for snap-fastening two elements with press attachment to an engagement surface|FR3087859A1|2018-10-31|2020-05-01|Faurecia Interieur Industrie|FASTENER AND FIXING ASSEMBLY COMPRISING SUCH A FASTENER|
    US11149774B2|2019-10-03|2021-10-19|Newfrey Llc|Bathtub fastener assembly|
    DE102016014628A1|2016-12-09|2018-06-14|A.RAYMOND et Cie. SCS|Clip for attaching a first element to a second element|
    US10968931B1|2019-10-17|2021-04-06|Newfrey Llc|Dual component sealing fastener and coupling assembly including same|
    法律状态:
    2015-10-23| PLFP| Fee payment|Year of fee payment: 2 |
    2016-05-20| PLSC| Publication of the preliminary search report|Effective date: 20160520 |
    2016-10-24| PLFP| Fee payment|Year of fee payment: 3 |
    2017-10-20| PLFP| Fee payment|Year of fee payment: 4 |
    2018-10-24| PLFP| Fee payment|Year of fee payment: 5 |
    2019-10-22| PLFP| Fee payment|Year of fee payment: 6 |
    2020-10-21| PLFP| Fee payment|Year of fee payment: 7 |
    2021-10-20| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1461195|2014-11-19|
    FR1461195A|FR3028577B1|2014-11-19|2014-11-19|CLAMPING FIXING DEVICE AND ASSEMBLY COMPRISING SUCH A FIXING DEVICE|FR1461195A| FR3028577B1|2014-11-19|2014-11-19|CLAMPING FIXING DEVICE AND ASSEMBLY COMPRISING SUCH A FIXING DEVICE|
    CN201520926922.5U| CN205225988U|2014-11-19|2015-11-19|Block fixing device and vehicle subassembly|
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