Suspension spring support for a motor vehicle

Abstract

The invention relates to a suspension spring support for a motor vehicle. The spring support (2) comprises a plate (4) intended to bear against a first face (6) of a longitudinal member (8) of a motor vehicle chassis (10). One edge of the plate (4) is extended by an appendage (20) intended to bear against a second face (22) of the longitudinal member (8) which is adjacent to the first face (6) of the longitudinal member (8).

Description

Description Title of the invention: Suspension spring support for a motor vehicle Technical field to which the invention relates

[0001] The present invention claims priority from French application 2209549 filed on September 21, 2022, the content of which (text, drawings and claims) is incorporated herein by reference. The present invention relates to a suspension spring support for a motor vehicle. Technological background

[0002] It is known from the state of the art to use a suspension spring support in order to hold the end of a coil spring against a side member of a motor vehicle chassis.

[0003] More precisely, a suspension spring support is a part that positions, for example, a rear axle shock absorber spring on the underbody of the vehicle.

[0004] The present invention aims to improve the rigidity of such a support. Subject of the invention

[0005] For this, the invention proposes a suspension support comprising a skate intended to bear against a first face of a side member of a chassis for a motor vehicle.

[0006] Remarkably, one edge of the support plate is extended by an appendage intended to bear against a second face of the spar, the second face of the spar being adjacent to said first face.

[0007] Thus, advantageously, the suspension support has increased rigidity.

[0008] According to another embodiment of the invention, the appendage extending the plate forms an angle with the plate whose value is between 80° and 100°, preferably of the order of 90°.

[0009] According to another embodiment of the invention, the plate comprises a protrusion intended to hold one end of a helical spring. Preferably, the protrusion is cylindrical or substantially cylindrical in shape.

[0010] The invention also relates to a chassis for a motor vehicle, comprising a longitudinal member on which is mounted a support for a suspension spring as described above. Remarkably, at the support, the longitudinal member comprises a rebate bearing against at least two faces of the longitudinal member covered by the support. Preferably, the profile of the longitudinal member is "u"-shaped or substantially "u"-shaped.

[0011] According to another embodiment of the invention, the rebate has a stair-step profile.

[0012] According to another embodiment of the invention, the support plate is welded to the first face of the spar, at the level of a step or a riser formed by the rebate.

[0013] According to another embodiment of the invention, the appendage of the support is welded to the second face of the spar, at the level of a riser step or a step formed by the rebate.

[0014] According to another embodiment of the invention, the chassis comprises a helical spring, one end of which bears against a support as described above. Preferably, the appendage present at the level of the support plate is inserted at least partially into the helical spring.

[0015] According to another embodiment of the invention, the chassis comprises a multi-link rear axle, linked to a second end of the coil spring.

[0016] The invention also relates to a motor vehicle comprising a chassis as described above.

[0017] Of course, the various features, variants and embodiments mentioned above may be combined with each other in various combinations, provided that they are not incompatible or mutually exclusive. Description of figures

[0018] The invention will be better understood from the following description, which relates to preferred embodiments, given as examples not limiting, and explained with reference to the attached schematic drawings, in which:

[0019] [Fig. 1] illustrates a perspective view of a chassis comprising a spring support according to the invention;

[0020] [Fig. 2] illustrates a perspective view of a chassis comprising a spring support according to the invention, on which a helical spring is present;

[0021] [Fig. 3] illustrates a perspective cross-section of the chassis shown in Figure 1;

[0022] [Fig. 4] illustrates a perspective view of a chassis represented by Figure 1, comprising a multi-link rear axle linked to a support according to the invention by means of a coil spring. Detailed description of the invention

[0023] As a reminder, the invention proposes a support for a motor vehicle suspension spring with increased rigidity.

[0024] Figure 1 illustrates a non-limiting exemplary embodiment of the invention of a support for a suspension spring. The support 2 consists of a plate 4 bearing against a first face 6 of a side member 8 of a chassis 10 for a motor vehicle. An upper face 12 of the plate 4 comprises a protrusion 14. The protrusion is cylindrical or substantially cylindrical in shape and extends perpendicularly or substantially perpendicularly to the upper face 12.

[0025] As illustrated in Figure 2, the protrusion 14 is intended to be inserted into a helical spring 16, at a first end 18 of said spring.

[0026] The support 2 is remarkable in that one edge of the plate 4 is extended by an appendage 20, intended to bear against a second face 22 of the spar 8. The second face 22 is adjacent to the first face 6 of the spar. According to the present example, the appendage is of identical or similar shape to the plate.

[0027] The appendage 20 forms an angle with the plate 4, the value of which is between 80° and 100°, preferably of the order of 90°.

[0028] In other words, the support 2 has the shape of a bracket in order to rest against two adjacent faces of the spar 8.

[0029] The particular shape of the support 2 gives it increased rigidity compared to the suspension spring supports used in the automotive sector.

[0030] Preferably, the plate 4 and the appendage 20 form a single piece. The support is preferably made from a metallic material.

[0031] According to an alternative embodiment illustrated by Figure 3, the profile of the spar 8 is similar or substantially similar to a “U”. At the level of the support 2, the spar comprises a rebate 24 bearing against at least two faces of the spar which are covered by the support 2. In other words, the rebate 24 is present in the spar 8.

[0032] In this example, the rebate has several faces arranged to form a stair-step profile.

[0033] Advantageously, the plate 4 of the support is welded to the first face 6 of the longitudinal member 8, at the level of a step 26 formed by the rebate, and the appendage 20 of the support is welded to the second face 22 of the longitudinal member at the level of a riser 28 of the rebate 24.

[0034] Thus, advantageously, the welding points allowing the support 2 to be held against the longitudinal member 8 are made at a wall composed of a face of the longitudinal member and a part of the rebate. The welding points are then formed at areas of the longitudinal member characterized by an excess thickness and therefore increased rigidity. The presence of the rebate in the longitudinal member therefore makes it possible to locally increase the rigidity of the longitudinal member, in order to ensure better retention of the support on the longitudinal member 8 by a welding technique for example, without it being necessary to increase the thickness of the longitudinal member 8.

[0035] The invention thus allows better support of the support on a spar, in a more economical manner.

[0036] The invention also relates to a chassis 10 for a motor vehicle, as illustrated in FIG. 4, comprising a helical spring 16 of which a first end 18 bears against a support 2 according to the invention, and a second end 30 of the spring is linked to a multi-link rear axle 32.

Claims

CLAIMS

1. Support (2) for a suspension spring comprising a pad (4) intended to bear against a first face (6) of a side member (8) of a chassis (10) for a motor vehicle, characterized in that an edge of the plate is extended by an appendage (20) intended to bear against a second face (22) of the side member (8) which is adjacent to the first face (6) of the side member (8).

2. Support (2) according to claim 1, characterized in that the appendage (20) forms an angle with the plate (4), the value of which is between 80° and 100°.

3. Support (2) according to claim 1 or 2, characterized in that the plate (4) comprises a protrusion (14) intended to hold one end (18) of a helical spring (16).

4. Chassis (10) for a motor vehicle comprising a longitudinal member (8) on which is mounted a support (2) for a suspension spring according to one of claims 1 to 3, characterized in that at the level of the support (2), the longitudinal member (8) comprises a rebate (24) bearing against at least two faces of the longitudinal member (8) which are covered by the support (2).

5. Chassis (10) for a motor vehicle according to claim 4, characterized in that the rebate (24) has a stepped profile.

6. Chassis (10) for a motor vehicle according to claim 4 or 5, characterized in that the support plate (2) is welded to the first face (6) of the side member (8), at the level of a step (26) or a riser (28) formed by the rebate (24).

7. Chassis (10) for a motor vehicle according to one of claims 4 to 6, characterized in that the appendage (20) of the support (2) is welded to the second face (22) of the side member (8), at the level of a riser (28) or a step (26) formed by the rebate (24).

8. Chassis (10) for a motor vehicle comprising a helical spring (16) of which a first end (18) bears against a support (2) according to one of claims 4 to 7.

9. Chassis (10) for a motor vehicle according to claim 8, characterized in that it comprises a multi-link rear axle (32) connected to a second end (30) of the coil spring.

10. Motor vehicle comprising a chassis (10) according to one of claims 4 to 9.

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