CN220662200U - Automobile rear trailing arm mounting structure - Google Patents
Automobile rear trailing arm mounting structure Download PDFInfo
- Publication number
- CN220662200U CN220662200U CN202321695370.2U CN202321695370U CN220662200U CN 220662200 U CN220662200 U CN 220662200U CN 202321695370 U CN202321695370 U CN 202321695370U CN 220662200 U CN220662200 U CN 220662200U
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- CN
- China
- Prior art keywords
- trailing arm
- plate
- cover plate
- supporting
- arm mounting
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Links
- 238000003466 welding Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Body Structure For Vehicles (AREA)
Abstract
The utility model provides an automobile rear trailing arm mounting structure which comprises a rear trailing arm mounting seat, wherein an annular flanging of the rear trailing arm mounting seat is fixedly attached to a mounting hole edge on a lower cover plate of a rear longitudinal beam, a supporting box is arranged in a cavity formed by the rear longitudinal beam cover plate, a side cover plate and a rear floor, the supporting box is fixedly connected with the side plate of the side sill, the side cover plate and the rear floor to form a cavity structure, the local rigidity strength of a mounting point can be greatly improved, the structural strength of the automobile rear trailing arm mounting structure is improved, and good NVH performance is obtained.
Description
Technical Field
The utility model belongs to the technical field of automobile structures, and particularly relates to an automobile rear trailing arm mounting structure.
Background
When an automobile runs on a road, various complex running conditions are encountered, such as: acceleration, cornering, braking, pit passing, etc. Under these driving conditions, the road surface may generate significant impact loads on the wheels, which may be transferred to the vehicle body through the suspension. Impact load is born mainly by automobile body trailing arm mounting point, and consequently the structural design of trailing arm mounting point is not good, often leads to the road surface to transmit to automobile body energy greatly, leads to the road noise big, and local rigidity intensity is not enough also to lead to the solder joint to become invalid, fatigue damage even local fracture destroys scheduling strength problem easily.
The name of the rear trailing arm mounting fixed point structure is CN 103847449A, which discloses a rear trailing arm mounting plate for assembling a rear trailing arm, a rear trailing arm mounting outer plate is fixedly connected with a rear longitudinal beam, a mounting surface is provided with a mounting hole for mounting the rear trailing arm, and longitudinal side surfaces on two sides of the mounting surface are provided with bolt holes which are communicated with the mounting hole. According to the scheme, the trailing arm is installed by extending the support outside the longitudinal beam, the rear trailing arm installation outer plate is fixedly connected with the rear longitudinal beam in the structure, and the rear trailing arm installation plate of the rear trailing arm is provided with the installation hole for installing the rear trailing arm, so that the dynamic stiffness of the installation point is low, and the local strength is poor.
The name of the platform-type vehicle body trailing arm mounting structure (patent number: CN 107264205A) discloses a rear longitudinal beam and a trailing arm reinforcing plate, wherein the trailing arm reinforcing plate is arranged on the rear longitudinal beam, the edge of the trailing arm reinforcing plate is provided with a flanging, and the corresponding flanging is welded with the rear longitudinal beam and a threshold inner plate respectively. The structure of above-mentioned scheme digs the hole through the longeron, sinks the installing support inboard to set up back longeron and trailing arm reinforcing plate, but its trailing arm reinforcing plate does not overlap joint with the car floor, only welds with back longeron and threshold inner panel mutually, can lead to the X, Z of trailing arm mounting structure to rigidity inadequately, thereby leads to solder joint inefficacy, fatigue damage even local fracture to destroy etc. intensity problem.
Disclosure of Invention
The utility model provides an automobile rear trailing arm mounting structure, which aims to improve the structural strength of the automobile rear trailing arm mounting structure and obtain good NVH performance.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an automobile rear trailing arm mounting structure, includes rear trailing arm mount pad, the annular turn-ups of rear trailing arm mount pad fixedly joint connect the mounting hole edge department on the back longeron lower cover plate, the axle core of rear trailing arm installation tubular column is located vehicle width direction, the face is on a parallel with vehicle width direction's supporting wall extends to the top of back longeron lower cover plate from the two hole edges that lie in vehicle width direction on the annular turn-ups, rear trailing arm installation tubular column's both ends are fixed on two supporting walls, rear trailing arm's front end hinge connection is on rear trailing arm installation tubular column, the both sides in vehicle width direction on the back longeron lower cover plate overlap joint welding with threshold roof beam curb plate, the side cap board, the back longeron lower cover plate, threshold roof beam curb plate, the side cap board, the cavity inside that the back floor encloses is equipped with box-shaped supporting box, the corresponding position on the supporting box is with the back longeron lower cover plate, threshold roof beam curb plate, side cap board, the back floor welding links firmly, the hole territor on the supporting box bottom plate coincides with the hole territor of the mounting hole on the longeron lower cover plate, the position is just right.
In the scheme, the back longitudinal beam cover plate and the cavity formed by the threshold beam side plate, the side cover plate and the back floor are internally provided with the supporting box, and the supporting box and the threshold beam side plate, the side cover plate and the back floor are fixedly connected to form a cavity structure. The cavity structure is embedded in the inner side of the rear longitudinal beam cover plate, so that energy transferred to a vehicle body from a road surface is shared, the local rigidity strength of a mounting point can be greatly improved, the structural strength of a rear trailing arm mounting structure of a vehicle is improved, and good NVH performance is obtained.
Drawings
FIG. 1 is a schematic perspective view of the assembled state of the present utility model;
FIG. 2 is a schematic perspective view of a trailing arm mount and a rear side rail lower deck in accordance with the present utility model;
FIG. 3 is a schematic perspective view of a support case according to the present utility model;
FIG. 4 is an enlarged detail of FIG. 1;
fig. 5 and 6 are enlarged views of the detail of fig. 3.
Detailed Description
The rear trailing arm mounting structure for an automobile as shown in fig. 1 to 3 comprises a rear trailing arm mounting seat 10, an annular flange 12 of the rear trailing arm mounting seat 10 is fixedly attached to a mounting hole 21 hole edge on a rear longitudinal beam lower cover plate 20, a shaft core of a rear trailing arm mounting pipe column 11 is located in the vehicle width direction, a supporting wall 13 parallel to the vehicle width direction extends upwards from two holes in the vehicle width direction on the annular flange 12 to the upper side of the rear longitudinal beam lower cover plate 20, two ends of the rear trailing arm mounting pipe column 11 are fixed on the two supporting walls 13, the front end of a rear trailing arm A is hinged to the rear trailing arm mounting pipe column 11, and two sides in the vehicle width direction on the rear longitudinal beam lower cover plate 20 are welded with a threshold side plate 30 and a side cover plate 40 in a lap joint manner, and the rear trailing arm mounting structure is characterized in that: the cavity enclosed by the rear longitudinal beam lower cover plate 20, the threshold beam side plates 30, the side cover plates 40 and the rear floor 60 is internally provided with a box-shaped supporting box 50, the corresponding parts on the supporting box 50 are fixedly connected with the rear longitudinal beam lower cover plate 20, the threshold beam side plates 30, the side cover plates 40 and the rear floor 60 by welding, and the bottom plate of the supporting box 50 is provided with a hole area which is in line with the hole area outline of the mounting hole 21 on the longitudinal beam lower cover plate 20 and is opposite to the position.
In the above scheme, the supporting box 50 is arranged in the cavity surrounded by the rear longitudinal beam lower cover plate 20, the threshold beam side plate 30, the side cover plate 40 and the rear floor 60, after the rear trailing arm A is mounted on the trailing arm mounting seat 10, if the mounting position of the trailing arm mounting seat 10 is impacted, the supporting box 50 can disperse stress, reduce the energy transferred from the road surface to the vehicle body, improve the structural strength and rigidity of the cavity surrounded by the rear longitudinal beam lower cover plate 20, the threshold beam side plate 30, the side cover plate 40 and the rear floor 60, and obtain good NVH performance.
Preferably, in order to facilitate the arrangement of the supporting box 50 in the cavity defined by the rear side sill lower cover 20, the side sill side panel 30, the side sill 40 and the rear floor 60, the supporting box 50 is formed by lap welding a bottom supporting plate 51, a front supporting plate 52 and a rear supporting plate 53. Meanwhile, the scheme can adapt to different vehicle types by changing the length and the size of the bottom supporting plate 51, the front supporting plate 52 and the rear supporting plate 53, so that the cost is reduced.
The two side edges of the front supporting plate 52 are provided with backward side flanges 521 which are welded with the side sill beam plates 30 and the side cover plates 40 in a lap joint manner, the lower edge of the front supporting plate 52 is provided with forward lower flanges 522, and the lower flanges 522 are fixedly connected with the rear floor 60. The side flanges 521 which are arranged backwards are arranged on the two side edges of the front supporting plate 52 in the scheme and are welded with the threshold beam side plates 30 and the side cover plates 40 in a lap joint mode, the threshold beam side plates 30 are utilized on one side of the front supporting plate 52, the side cover plates 40 are utilized on one side, side rigidity can be effectively improved, the lifting performance is improved, and the preferable lower flanges 522 are fixedly connected with the rear floor 60 through structural adhesive, so that the problem of welding in a closed cavity is effectively solved.
The two side edges of the rear supporting plate 53 are provided with rear supporting side flanges 531, the rear supporting side flanges 531 are welded with the side sill beam plates 30 and the side cover plates 40 in a lap joint manner, the lower edge of the rear supporting plate 53 is provided with rear flanges 532 which are arranged backwards in a directed manner, and the rear flanges 532 are fixedly connected with the rear floor 60. In the above scheme, the rear supporting side flanges 231 are welded with the side sill beam plates 30 and the side cover plates 40 in a lap joint manner, so that the side rigidity can be effectively improved, the performance is improved, and the rear flanges 532 are fixedly connected with the rear floor 60 by structural adhesive, so that the problem of welding in a closed cavity is effectively solved.
The outer ring edge of the bottom support plate 51 is provided with an upwardly extending connecting flange 511, the front and rear parts of the connecting flange 511 are welded with the front support plate 52 and the rear support plate 53 in a lap joint manner, the inner part of the connecting flange 511 is welded with the side flange 521 on the inner side of the front support plate 52, the inner flange 231 of the rear support plate 53 and the side cover plate 40 in a lap joint manner, and the outer part of the connecting flange 511 is welded with the side flange 521 on the outer side of the front support plate 52 and the side sill side plate 30 in a lap joint manner.
In the above scheme, the front and rear sides of the bottom supporting plate 51 are welded with the front supporting plate 52 and the rear supporting plate 53 in a lap joint manner, the inner and outer sides are welded with the threshold beam side plate 30 and the side cover plate 40 in a lap joint manner to form the supporting box 50, and the threshold beam side plate 30 and the side cover plate 40 are utilized to form the supporting box 50, so that the weight of a vehicle body is lightened, the stress is dispersed, and the phenomenon of stress concentration is prevented.
The middle part of the bottom supporting plate 51 is provided with a through hole 512, the through hole 512 is in line with and opposite to the hole area outline of the mounting hole 21 on the rear longitudinal beam lower cover plate 20, and the bottom supporting plate 51 is fixedly connected with the rear longitudinal beam lower cover plate 20 and the rear trailing arm mounting seat 10 in an up-down direction in an attaching mode. In the above-mentioned scheme, in order to facilitate the arrangement of the rear trailing arm a, the through hole 512 is in line with the hole area outline of the mounting hole 21 on the rear longitudinal beam lower cover plate 20, and is opposite to the position, the rear trailing arm mounting pipe column 11 can be arranged inside the supporting box 50, the bottom supporting plate 51 is fixedly connected with the rear longitudinal beam lower cover plate 20 and the rear trailing arm mounting seat 10 in a fitting manner, so that the strength of the local mounting point of the trailing arm is improved, and the impact transmitted to the rear trailing arm mounting area of the vehicle body from the ground through the chassis suspension can be dispersed and borne.
Preferably, in order to ensure that the support box 50 forms a closed cavity, the lower flange 522 of the front support plate 52 is fixedly connected to the lower position of the rear floor 60, and the lower flange 522 of the front support plate 52 is overlapped at the lower position of the rear floor 60 due to the elevation of the mounting seat.
Preferably, for weight reduction of the whole vehicle, weight reducing holes 54 are provided in the bottom support plate 51, the front support plate 52, and the rear support plate 53.
Claims (8)
1. The utility model provides a trailing arm mounting structure behind car, includes trailing arm mount pad (10), annular turn-ups (12) fixed laminating of trailing arm mount pad (10) connect mounting hole (21) hole edge department on trailing longitudinal beam lower cover plate (20), the axle core of trailing arm installation tubular column (11) is located vehicle width direction, face is on a parallel with vehicle width direction's supporting wall (13) from annular turn-ups (12) be located vehicle width direction's two holes along upwards extending to trailing longitudinal beam lower cover plate (20) top, the both ends of trailing arm installation tubular column (11) are fixed on two supporting walls (13), the front end hinge connection of trailing arm (A) is on trailing arm installation tubular column (11), vehicle width direction's both sides on trailing beam lower cover plate (20) overlap joint welding with threshold beam curb plate (30), side cap board (40), its characterized in that: the rear longitudinal beam lower cover plate (20), the threshold beam side plate (30), the side cover plate (40) and the rear floor (60) are enclosed to form a cavity, a box-shaped supporting box (50) is arranged in the cavity, corresponding parts on the supporting box (50) are fixedly connected with the rear longitudinal beam lower cover plate (20), the threshold beam side plate (30), the side cover plate (40) and the rear floor (60) through welding, and a hole area on the bottom plate of the supporting box (50) is consistent with the hole area outline of the mounting hole (21) on the longitudinal beam lower cover plate (20) and is opposite to the position.
2. The rear trailing arm mounting structure for an automobile according to claim 1, wherein: the supporting box (50) is formed by lap welding of a bottom supporting plate (51), a front supporting plate (52) and a rear supporting plate (53).
3. The rear trailing arm mounting structure for an automobile according to claim 2, wherein: the side flanges (521) which are arranged backwards are arranged at the two side edges of the front supporting plate (52), the side flanges (30) and the side cover plates (40) are welded in a lap joint mode, the lower flange (522) which is arranged forwards is arranged at the lower edge of the front supporting plate (52), and the lower flange (522) is fixedly connected with the rear floor (60).
4. The rear trailing arm mounting structure for an automobile according to claim 2, wherein: the two side edges of the rear supporting plate (53) are provided with rear supporting side flanges (531) forwards, the rear supporting side flanges (531) are welded with the side sill beam plates (30) and the side cover plates (40) in a lap joint mode, the lower edge of the rear supporting plate (53) is provided with rear flanges (532) which are arranged backwards in a directed mode, and the rear flanges (532) are fixedly connected with the rear floor (60).
5. The rear trailing arm mounting structure for an automobile according to claim 2, wherein: the bottom support plate (51) outer ring edge part have upwards extend connect turn-ups (511), the front and back portion and front support plate (52), back backup pad (53) overlap joint welding of connection turn-ups (511) medial part and front support plate (52) inboard turn-ups (521), back support plate (53) inboard turn-ups (231) and side cap board (40) overlap joint welding, connect turn-ups (511) lateral part and front support plate (52) outboard turn-ups (521) and threshold roof beam curb plate (30) overlap joint welding.
6. The rear trailing arm mounting structure for an automobile according to claim 2, wherein: the middle part of the bottom supporting plate (51) is provided with a through hole (512), the through hole (512) is in line with and opposite to the hole domain outline of the mounting hole (21) on the rear longitudinal beam lower cover plate (20), and the bottom supporting plate (51) is fixedly connected with the rear longitudinal beam lower cover plate (20) and the rear trailing arm mounting seat (10) in an up-down direction in an attaching mode.
7. The rear trailing arm mounting structure for an automobile according to claim 3, wherein: the lower flanging (522) of the front supporting plate (52) is fixedly connected with the lower position of the rear floor (60).
8. The rear trailing arm mounting structure for an automobile according to claim 2, wherein: the bottom support plate (51), the front support plate (52) and the rear support plate (53) are provided with lightening holes (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321695370.2U CN220662200U (en) | 2023-06-29 | 2023-06-29 | Automobile rear trailing arm mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321695370.2U CN220662200U (en) | 2023-06-29 | 2023-06-29 | Automobile rear trailing arm mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220662200U true CN220662200U (en) | 2024-03-26 |
Family
ID=90332806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321695370.2U Active CN220662200U (en) | 2023-06-29 | 2023-06-29 | Automobile rear trailing arm mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220662200U (en) |
-
2023
- 2023-06-29 CN CN202321695370.2U patent/CN220662200U/en active Active
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| GR01 | Patent grant |