Vehicle seat mounting system and manufacturing process

Abstract

Vehicle Seat Mounting System and Manufacturing Method The present invention relates to a vehicle seat mounting system, particularly for automobiles, comprising a slide (24) and a component (40), wherein: - the slide (24) comprises a first slide element (26) and a second slide element (28) mounted to slide one on top of the other along a longitudinal direction (X), - the component (40) comprises a fastening portion (46) having a fastening edge (48) fixed to a fastening area (42) of the first slide element (26) by means of a weld (44), the component (40) being provided with a chamfer (50) along the fastening edge (48). Figure for the abstract: Figure 2

Description

Title of the invention: Vehicle seat mounting system and manufacturing method

[0001] The present invention relates to the field of vehicle seat mounting systems, in particular for motor vehicles, allowing the seat to slide relative to the vehicle.

[0002] It is possible to mount a motor vehicle seat in a motor vehicle by means of a mounting system comprising one or more slides allowing the seat to slide relative to the chassis of the motor vehicle. The sliding of the seat allows the driver or a passenger to adjust the seat position, for example, according to the height of the driver or passenger.

[0003] Each slide comprises a first slide element and a second slide element mounted sliding one on top of the other, one being fixed to the vehicle and the other fixed to the seat.

[0004] It is possible to attach a seat-related component by welding it to the first or second slide element, such that the component moves with the seat. Such a component is, for example, a seat belt attachment or anchor point.

[0005] One of the aims of the invention is to propose a mounting system that allows a component to be fixed by welding onto a slide element which is robust and reliable.

[0006] To this end, the invention relates to a vehicle seat mounting system, in particular for automobiles, comprising a slide and a component, in which:

[0007] - the slide comprises a first slide element and a second element of sliding rails mounted one on top of the other along a longitudinal direction,

[0008] - the component includes a fastening portion having a fixed fastening edge on a fixing area of ​​the first slide element by means of a weld, the component being provided with a chamfer along the fixing edge.

[0009] The weld made between the first slide element and a chamfered mounting edge of the component makes it possible to make a weld with a wide entry area between the chamfer and the mounting area, which facilitates welding, and a reduced distance between the mounting edge and the mounting area, which is favorable to the robustness of the weld.

[0010] This results in a robust and reliable weld, particularly for a safety component such as a fastener or a seat belt anchor point.

[0011] According to other advantageous aspects of the invention, the mounting system comprises one or more of the following optional features, taken individually or in all technically possible combinations:

[0012] - The fastening portion has a first face and a second opposite face, the fixing edge extending between the first face and the second face.

[0013] - The chamfer extends between the fixing edge and the first face of the portion of fastening.

[0014] - The chamfer extends obliquely with respect to the fixing edge and the first face of the fixing portion.

[0015] - The component includes a fastening tab comprising a portion proximal and a distal portion defining the fixation portion, the proximal portion and the fixation portion being inclined relative to each other, being connected for example by a fold.

[0016] - The fixation area is convex.

[0017] - The fixing portion extends along an extension direction parallel to the normal to the fixing area at the point of the weld between the fixing edge and the fixing area.

[0018] - The fixing area is rounded, for example in the form of an arc of a circle around an axis central.

[0019] - The fixing portion extends along a relatively radial extension direction to the central axis at the point of the weld between the fixing edge and the fixing area.

[0020] - The fixing area is profiled along the longitudinal direction and / or the edge of the fixing extends along the longitudinal direction and / or the chamfer extends along the longitudinal direction.

[0021] - The welding is carried out with the addition of material, in particular with a metal contribution.

[0022] - The component is an attachment, for example a belt anchor point security.

[0023] - The first slide element and the second slide element are profiled along the longitudinal direction.

[0024] - The second slide element is intended to be fixed to the vehicle chassis and the The first slide element is configured to be fixed to the seat, specifically to a seat cushion.

[0025] The invention also relates to an assembly comprising a vehicle seat and a mounting system as described above, the vehicle seat being fixed to the first slide element of the slide of the mounting system.

[0026] The invention also relates to a method for manufacturing a vehicle seat mounting system, particularly for automobiles, comprising the steps of:

[0027] - obtain a first slide element of a slide comprising the first a sliding element and a second sliding element configured to be mounted sliding one on top of the other in a longitudinal direction,

[0028] - obtain a component comprising a fastening portion intended for fastening the component on the first slide element,

[0029] - fix the fixing portion onto the first slide element by welding a fixing edge of the fixing portion on a fixing area of ​​the first slide element, the component being provided with a chamfer along the fixing edge, the weld being carried out preferably with filler material, in particular by bringing the filler material between the fixing edge and the fixing area via an entry area defined between the chamfer and the fixing area.

[0030] According to other advantageous aspects of the invention, the manufacturing process comprises one or more of the following optional features, taken individually or in all technically possible combinations:

[0031] - The fixation zone is convex and / or the fixation portion extends along a extension direction parallel to the normal to the fixing area at the weld point between the fixing edge and the fixing area.

[0032] - The component includes a fastening tab comprising a portion proximal and a distal portion defining the fixation portion, the proximal portion and the fixation portion being inclined relative to each other, being connected for example by a fold.

[0033] - The manufacturing process includes, before welding, placing a support on component support portion against a support area of ​​the first slide element, in particular with a planar support between the component support portion against a support area of ​​the first slide element, to position the component relative to the first slide element during welding.

[0034] The invention and its advantages will become clearer upon reading the following description, given solely by way of non-limiting example, and made with reference to the drawings in which:

[0035] [Fig-1] [Fig.1] is an elevational view of a vehicle seat mounted in a vehicle ;

[0036] [Fig.2] [Fig.2] is a cross-sectional view of a vehicle seat mounting system, comprising a first slide element, a second slide element and a component fixed to the first slide element;

[0037] [Fig.3] [Fig.3] is an exploded perspective view of a first slide element and component;

[0038] [Fig.4] [Fig.4] is a cross-sectional view of the first slide element and the component during a welding operation of the component onto the first slide element.

[0039] As illustrated in [Fig.1], an assembly comprises a seat 10 mounted in a vehicle 12, in particular on a chassis 14 of the vehicle 12, by means of a mounting system 16.

[0040] The seat 10 comprises a seat 18 and a backrest 20. The seat 10 advantageously comprises a headrest 22 disposed at an upper end of the backrest 20. The mounting system 16 is preferably disposed between the seat 18 and the chassis 16 of the vehicle 12.

[0041] The mounting system 16 is configured to allow the seat 10 to slide along a longitudinal direction X, as illustrated by arrow F in [Fig. 1]. In particular, the seat 18 is slidably mounted on the frame 14 by means of the mounting system 16, along the longitudinal direction X.

[0042] The mounting system 16 comprises one or more slides 24, each slide 24 having a first slide element 26 and a second slide element 28 sliding relative to each other along the longitudinal direction X.

[0043] The first slide element 26 is for example fixed on the seat 10, in particular on the seat 18, the second slide element 28 being fixed on the vehicle 12, in particular on the chassis 14. Alternatively, the configuration is reversed.

[0044] The mounting system 16 includes, for example, two parallel slides 24, i.e. allowing the seat 10 to slide relative to the vehicle along the same longitudinal direction X.

[0045] The slides 24 are analogous; only one slide will be described in more detail with reference to Figures 2 to 4.

[0046] As illustrated in [Fig.2], the first slide element 26 of the slide 24 is, for example, a first profile.

[0047] The first slide element 26 comprises, for example, a first web 30 and two first wings 32. The first web 30 extends between the two first wings 32. Each of the first wings 32 extends from its respective side from the first web 30. The first wings 32 have, for example, their free edges folded. The first slide element 26 has a profile having a general U-shape.

[0048] The first slide element 26 is for example made of metal.

[0049] The second slide element 28 is, for example, a second profile.

[0050] The second slide element 26 comprises, for example, a second web 34 and two second wings 36. The second web 34 extends between the two second wings 36. Each of the second wings 36 extends on a respective side from the second web 34. The second wings 32 have, for example, their free edges folded.

[0051] The second slide element 28 is for example made of metal.

[0052] As illustrated in [Fig.2], the mounting system 16 includes a component 40 fixed to a fixing area 42 of the first slide element 26 by means of a weld 44.

[0053] Component 40 is for example made of metal.

[0054] The component 40 includes a fastening portion 46 having a fastening edge 48, the weld 44 being made between the fastening edge 48 and the fastening area 42, the component 40 being provided with a chamfer 50 along the edge 48.

[0055] The fixing edge 48 and the chamfer 50 extend for example parallel to the longitudinal direction X.

[0056] The fixing portion 46 has, for example, a flat and elongated shape.

[0057] The fastening portion 46 has a first face 46A and a second face 46B opposite. The first face 46A and the second face 46B extend, for example, parallel to each other.

[0058] The fixing edge 48 extends between the first face 46A and the second face 46B, preferably perpendicular to the first face 46A and the second face 46B.

[0059] The chamfer 50 extends for example between the fixing edge 48 and the first face 46A obliquely with respect to the fixing edge 48 and with respect to the first face 46A.

[0060] In section in a plane perpendicular to the longitudinal direction X, as in [Fig.2], the fixing edge 48 and the chamfer 50 are inclined relative to each other by a non-zero angle of inclination.

[0061] The fixing area 42 extends along the longitudinal direction X. The fixing area 42 of the first slide element 26 is profiled along the longitudinal direction X. The fixing area 42 is, for example, rounded and convex.

[0062] The fixing area 42 is for example a surface of a rounded junction 52 between the first web 30 and one of the first wings 32.

[0063] Preferably, in cross-sectional view in a plane perpendicular to the longitudinal direction X, the rounded fixing zone 42 extends in an arc of a circle, for example at an angle of about 90°, around a central axis A parallel to the longitudinal direction X.

[0064] The junction 52 is preferably rounded into an arc of a circle around the central axis A, for example at an angle of approximately 90°.

[0065] The junction 52 is for example a fold formed between the first web 30 and the first wing 32 connected to the first web 30 via this junction 52.

[0066] Preferably, in cross-sectional view in a plane perpendicular to the longitudinal direction X, the fastening portion 46 extends along an extension direction E substantially parallel to the normal to the fixing area 42 at the location of the weld 44.

[0067] When the fixing zone 42 is rounded into an arc of a circle, the extension direction E extends radially with respect to the central axis A around which the fixing zone 42 extends into an arc of a circle.

[0068] The edge 48 is preferably substantially perpendicular to the extension direction E, the chamfer 50 extending obliquely with respect to the extension direction E, i.e. neither perpendicular nor parallel to the extension direction E.

[0069] In examples, component 40 includes, for example, a fixing tab 54, the fixing portion 46 being part of the fixing tab 54.

[0070] The fixing tab 54 comprises, for example, a proximal portion 56 and a distal portion defined by the fixing portion 46. The proximal portion 56 is preferably connected to the rest of the component 40. The fixing portion 46 is free, before its welding onto the fixing area 42.

[0071] The proximal portion 56 and the fixing portion 46 are, for example, inclined relative to each other, in particular in longitudinal direction view X. The component 40 has, for example, an intermediate fold 58 between the proximal portion 56 and the fixing portion 46.

[0072] When the mounting system 16 is fixed in the vehicle, the proximal portion 56 extends for example horizontally, the fixing portion 46 extending obliquely, neither horizontally nor vertically.

[0073] In cross-sectional view in a plane perpendicular to the longitudinal direction X, as in [Fig. 2], the proximal portion 54 and the fastening portion 46 form a non-zero angle. The component 40 includes, for example, an attachment portion 60 configured for attaching a comfort or safety element to the component 40, such as a seat belt. The attachment portion 60 is, for example, provided with an attachment hole 62 for attaching the safety or comfort element.

[0074] The attachment portion 60 has, for example, a flat shape.

[0075] The attachment portion 60 extends vertically, for example, when the mounting system 16 is fixed in the vehicle.

[0076] The fixing tab 54, including the fixing portion 46, and the attachment portion 60 are for example formed in a single piece of material, for example in a single piece of metal, for example from a metal plate, in particular by machining, drilling and / or bending.

[0077] When the fixing tab 54 has a proximal portion 56 from which the fixing portion 46 extends, the proximal portion 56 extends, for example from the attachment portion 60, being inclined with respect to the attachment portion 60, and in particular perpendicular to the attachment portion 60.

[0078] Optionally, component 40 includes a support portion 64 configured to bear, preferably in planar support, on a support area 66 of the first slide element 26.

[0079] The bearing area 66 is for example a surface of the first web 30 of the first slide element 26.

[0080] The component 40 is fixed to the first slide element 16 only by means of the weld 44. In such a case, the component 40 is not fixed to the first slide element 26 by any other weld and any fastener such as a rivet or a screw.

[0081] In variants, the component 40 is fixed to the first slide element 26 by one or more welds and / or one or more other fasteners such as a rivet or a screw. For example, it is possible to fix a support portion 64 to the first slide element using one or more welds and / or one or more other fasteners such as a rivet or a screw.

[0082] As illustrated in [Fig.4], the weld 44 (illustrated in dashed lines in [Fig.4]) is preferably made by welding with filler material, for example by cold metal transfer (or CMT for "Cold Metal Transfer" in English), by metal welding under inert gas (or MIG for "Metal Inert Gas" in English) or by metal welding under active gas (or MAG for "Metal Active Gas" in English).

[0083] Figure 4 shows a welding head 68 and a welding wire 70 for depositing material and forming the weld 44 in the form of a weld bead between the fixing edge 48 and the fixing area 42.

[0084] For the execution of the weld 44, the component 40 is positioned against the first slide element 26. The positioning (position and orientation) is facilitated by the provision of a support portion 64 which allows precise positioning of the component 40 relative to the first slide element 26, and in particular relative to the fixing area 42.

[0085] The weld 44 is then carried out, preferably on the side of the fastening portion 42 where the chamfer 50 is located, in particular bringing the material brought from the weld between the fastening edge 48 and the fastening area 42 via an entry area defined between the chamfer 50 and the fastening area 42.

[0086] The provision of the chamfer 50 makes it possible to form a wide entry zone between the chamfer 50 and the fixing zone 42, which promotes the penetration of the weld 44 between the fixing edge 48 and the fixing zone 42, while providing a reduced distance D between the fixing edge 48 and the fixing zone 42 to minimize the size of the weld 44 between the fixing edge 48 and the fixing zone 42.

[0087] The use of a rounded fixing zone 42, in particular convex, in particular with a circular arc profile, contributes to the formation of a wide entry zone between the chamfer 50 and the fixing zone 42 with a reduced distance between the fixing edge 48 and the fixing zone 42.

[0088] The orientation of the fixing portion 46 substantially radially relative to the fixing zone 42 extending in an arc of a circle allows the weld 44 to work while limiting the stresses, which makes the weld 44 more reliable.

[0089] Component 40 is, for example, an attachment or anchor point for a seat belt.

[0090] When the mounting system 16 includes two slides 24, only one slide 24 is provided with a component 40 such as a component defining an anchor point or each slide is provided with a component defining an anchor point, one for the permanent attachment of one end of a seat belt and the other for the attachment of the seat belt locking device.

Claims

Demands

1. Mounting system (16) for a vehicle seat (10), in particular a motor vehicle seat, comprising a slide (24) and a component (40), in which: - the slide (24) comprises a first slide element (26) and a second slide element (28) mounted to slide one on top of the other in a longitudinal direction (X), - the component (40) comprises a fastening portion (46) having a fastening edge (48) fixed to a fastening area (42) of the first slide element (26) by means of a weld (44), the component (40) being provided with a chamfer (50) along the fastening edge (48).

2. Mounting system according to claim 1, wherein the fastening portion (42) has a first face (46A) and a second face (46B) opposite, the fastening edge (48) extending between the first face (46A) and the second face (46B).

3. Mounting system according to claim 2, wherein the chamfer (50) extends between the fixing edge (48) and the first face (46A) of the fixing portion (46).

4. Mounting system according to claim 3, wherein the chamfer (50) extends obliquely with respect to the fixing edge (48) and the first face (46A) of the fixing portion (46).

5. Mounting system according to any one of the preceding claims, wherein the component (40) comprises a fixing tab (54) comprising a proximal portion (56) and a distal portion defining the fixing portion (46), the proximal portion (56) and the fixing portion (46) being inclined relative to each other, being connected for example by a fold (58).

6. Mounting system according to any one of the preceding claims, wherein the fixing area (42) is convex.

7. Mounting system according to claim 6, wherein the fastening portion (44) extends along an extension direction (E) parallel to the normal to the fastening area (42) at the location of the weld (44) between the fastening edge (48) and the fastening area (42).

8. A mounting system according to any one of the preceding claims, wherein the fixing area (42) is profiled along the longitudinal direction (X) and / or the fixing edge (48) extends along the longitudinal direction (X) and / or the chamfer (50) extends along the longitudinal direction (X).

9. Assembly comprising a vehicle seat (10) and a mounting system (16) according to any one of the preceding claims, the vehicle seat being fixed to the first slide element (26) of the slide (24) of the mounting system (16).

10. A method for manufacturing a mounting system (16) for a vehicle seat (10), in particular a motor vehicle seat, comprising the steps of: - obtaining a first slide element (26) of a slide (24) comprising the first slide element (26) and a second slide element (28) configured to be mounted sliding one on top of the other along a longitudinal direction (X), - obtaining a component (40) comprising a fastening portion (46) provided for fastening the component to the first slide element (26), - fastening the fastening portion (46) to the first slide element (26) by welding a fastening edge (48) of the fastening portion (46) to a fastening area (42) of the first slide element (26), the component (40) being provided with a chamfer (50) along the fastening edge (48), the welding being preferably carried out with filler material,in particular by supplying the material between the fixing edge (48) and the fixing zone (42) via an entry zone defined between the chamfer (50) and the fixing zone (42).

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