CN218949298U

CN218949298U - Reinforcing structure for mounting point of rear auxiliary frame and automobile

Info

Publication number: CN218949298U
Application number: CN202320084495.5U
Authority: CN
Inventors: 谢兵; 陈德欣; 王武; 李孟阳; 吴勇
Original assignee: Chongqing Seres New Energy Automobile Design Institute Co Ltd
Current assignee: Chongqing Seres New Energy Automobile Design Institute Co Ltd
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2023-05-02
Anticipated expiration: 2033-01-29

Abstract

The utility model discloses a rear auxiliary frame mounting point reinforcing structure and an automobile, wherein the rear auxiliary frame mounting point reinforcing structure comprises a longitudinal beam rear section upper plate, a longitudinal beam rear section lower plate, a first bracket, a second bracket, a third bracket and a threaded liner tube, wherein the longitudinal beam rear section upper plate is welded with the longitudinal beam rear section lower plate and is provided with a concave cavity, the first bracket, the second bracket and the third bracket are welded to form a box body with an opening, the threaded liner tube is supported in the middle of the box body, two ends of the threaded liner tube are respectively connected with the top and the bottom of the box body, the box body is positioned at a vehicle body side mounting point of a rear auxiliary frame and is positioned in the concave cavity, and the top and the bottom of the box body are respectively welded with the longitudinal beam rear section upper plate and the longitudinal beam rear section lower plate. The automobile comprises the front auxiliary frame mounting point reinforcing structure. The utility model has the advantages of improving the dynamic stiffness of the mounting point at the side of the vehicle body of the rear auxiliary frame, inhibiting the noise in the vehicle caused by road surface excitation and having good quality of the vehicle.

Description

Reinforcing structure for mounting point of rear auxiliary frame and automobile

Technical Field

The utility model relates to the technology of automobiles, in particular to a reinforcing structure for mounting points of a rear auxiliary frame and an automobile.

Background

When the electric automobile runs on a rough road surface, the road noise in the passenger cabin becomes more prominent due to the lack of the traditional fuel oil automobile engine and the noise masking of air intake and exhaust. Therefore, the road noise control of the electric automobile is more strict than that of the traditional fuel oil automobile. The rear subframe is one of the main paths for road excitation to be transmitted to the vehicle body through the wheels, and the rigidity of the vehicle body side mounting points of the rear subframe needs to be controlled to avoid the complaints of passengers caused by large road noise.

The mounting point of the rear auxiliary frame of the existing electric automobile is mainly selected on a longitudinal beam, and a liner tube structure is generally arranged inside the longitudinal beam due to the limitation of the internal space of the longitudinal beam and the manufacturing process. The structure provided with the liner tube can only meet the basic strength requirement, but cannot meet the dynamic stiffness requirement of the mounting point at the side of the vehicle body of the rear auxiliary frame, so that road surface excitation is transmitted into the vehicle through the rear auxiliary frame, and the noise in the vehicle is large.

Disclosure of Invention

The utility model aims to provide a reinforcing structure for a mounting point of a rear auxiliary frame, which improves dynamic rigidity of a mounting point on the side of a vehicle body of the rear auxiliary frame and suppresses noise in the vehicle caused by road surface excitation.

In order to achieve the above purpose, the present utility model adopts the following technical scheme.

The utility model provides a rear subframe mounting point additional strengthening, includes longeron back end upper plate, longeron back end hypoplastron, first support, second support, third support and screw thread bushing pipe, longeron back end upper plate welds with longeron back end hypoplastron to be formed with the cavity, first support, second support and third support weld mutually and form the box body that has open, screw thread bushing pipe supports the box body middle part, both ends respectively with the top and the bottom of box body are connected, the box body is located the automobile body side mounting point department of rear subframe, and is located in the cavity, the top and the bottom of box body weld mutually with longeron back end upper plate and longeron back end hypoplastron respectively.

According to the utility model, the first bracket, the second bracket and the third bracket are welded to form the box body with an opening, the box body is internally connected with the threaded liner tube, the strength and rigidity of the box body are reinforced through the threaded liner tube, the top and the bottom of the box body are respectively welded with the upper plate of the rear section of the longitudinal beam and the lower plate of the rear section of the longitudinal beam, the concave cavity at the mounting point of the vehicle body side of the rear auxiliary frame is supported, and the dynamic rigidity of the mounting point of the vehicle body side of the rear auxiliary frame is improved, so that the noise in the vehicle caused by road surface excitation is restrained, and the use feeling of a user is improved.

Preferably, the whole L shape that is of first support, L shape horizontal part form the top of box body, and with the inboard laminating welding of longeron back end upper plate, vertical portion forms the side of box body, just the free end of vertical portion with the bottom of second support is connected.

Through the inboard laminating welding of horizontal part and longeron back end upper plate of first support, promote the intensity and the rigidity of tie point to be connected the free end of vertical portion with the bottom of second support, support the cavity through vertical portion, promote the intensity and the rigidity of cavity.

Preferably, the vertical portion has a reinforcing portion formed thereon to extend in a longitudinal direction thereof, the reinforcing portion being formed by concave-convex deformation of a body thereof.

Through set up the enhancement portion on vertical portion, realize strengthening vertical portion's intensity and rigidity on the basis that does not increase vertical portion material quantity, and then promote the supporting effect to the cavity.

Preferably, a flange is formed on the horizontal portion, and the flange is bonded and welded with the side face of the upper plate at the rear section of the longitudinal beam.

The flange is arranged to strengthen the horizontal part, and the flange is bonded and welded with the side face of the upper plate at the rear section of the longitudinal beam, so that the strength and the rigidity of the connecting point are further enhanced.

Preferably, the bottom of the second bracket forms the bottom of the box body, is adapted to the inner side structure of the lower plate at the rear section of the longitudinal beam, and is bonded and welded with the inner side structure.

Therefore, the strength and the rigidity of the connecting point are ensured by bonding and welding the second bracket and the inner side of the lower plate at the rear section of the longitudinal beam.

Preferably, two supporting parts are further formed on the second bracket, and the two supporting parts form the side faces of the box body and are welded with the inner side of the first bracket and the inner side of the upper plate at the rear section of the longitudinal beam respectively.

The two supporting parts are arranged on the second bracket to form the side face of the box body, so that the concave cavity is further supported, and the strength and the rigidity of the concave cavity are improved.

Preferably, the third bracket is rectangular in shape, and forms a side surface of the box body, and the three sides of the rectangle are respectively provided with a flanging, and the flanging is respectively bonded and welded with the inner side of the horizontal part of the first bracket, the inner side of the bottom of the second bracket and the supporting part of the second bracket.

Through setting up rectangular third support, form the another side of box body, further support the cavity, promote the intensity and the rigidity of cavity.

Preferably, a supporting surface of the second bracket and the third bracket are both formed with a reinforcing portion extending along the length direction thereof, and the reinforcing portion is formed by concave-convex deformation of the body thereof.

Through all set up the enhancement portion on a holding surface and the third support of second support, realize strengthening a holding surface and the intensity and the rigidity of third support of second support on the basis of not increasing the material quantity, and then promote the supporting effect to the cavity.

Preferably, the first bracket and the third bracket are respectively provided with a lightening hole.

By arranging the lightening holes, the weight reduction is realized on the premise of not influencing the strength and the rigidity.

In order to achieve the above object, an embodiment of the present utility model further provides an automobile including the above-mentioned reinforcing structure for mounting points of a rear subframe.

The utility model has the beneficial effects that the first bracket, the second bracket and the third bracket are welded to form the box body with an opening, the box body is internally connected with the threaded liner tube, the strength and the rigidity of the box body are reinforced through the threaded liner tube, the top and the bottom of the box body are respectively welded with the upper plate at the rear section of the longitudinal beam and the lower plate at the rear section of the longitudinal beam, the concave cavity at the mounting point at the vehicle body side of the rear auxiliary frame is supported, and the dynamic rigidity and the strength of the mounting point at the vehicle body side of the rear auxiliary frame are improved, so that the noise in the vehicle caused by road surface excitation is restrained, and the use feeling of a user is improved.

Drawings

FIG. 1 is a block diagram of the present utility model;

FIG. 2 is a block diagram of a third bracket of the present utility model;

FIG. 3 is a block diagram of a first bracket of the present utility model;

fig. 4 is a structural view of the second bracket of the present utility model.

Detailed Description

The utility model will be further described with reference to the accompanying drawings, which are not intended to limit the utility model to the embodiments described.

Reference numerals in the drawings of the specification include: the device comprises a first bracket 1, a second bracket 2, a bottom 21, a third bracket 3, a flange 31, a threaded liner tube 4, a longitudinal beam rear section upper plate 5, a longitudinal beam rear section lower plate 6, a lightening hole 7 and a reinforcing part 8.

Referring to fig. 1 to 4, a reinforcing structure for mounting points of a rear subframe comprises a longitudinal beam rear section upper plate 5, a longitudinal beam rear section lower plate 6, a first bracket 1, a second bracket 2, a third bracket 3 and a threaded liner tube 4, wherein the longitudinal beam rear section upper plate 5 is welded with the longitudinal beam rear section lower plate 6 and is provided with a concave cavity, the first bracket 1, the second bracket 2 and the third bracket 3 are welded to form a box body with an opening, the threaded liner tube 4 is supported in the middle of the box body, two ends of the threaded liner tube are respectively connected with the top and the bottom of the box body, the box body is positioned at the mounting point of the side of a vehicle body of the rear subframe and is positioned in the concave cavity, and the top and the bottom of the box body are respectively welded with the longitudinal beam rear section upper plate 5 and the longitudinal beam rear section lower plate 6.

Referring to fig. 1 and 3, the first bracket 1 is L-shaped, a horizontal part of the L-shape forms the top of the box body, and is bonded and welded with the inner side of the upper plate 5 at the rear section of the longitudinal beam, a vertical part forms the side surface of the box body, and the free end of the vertical part is connected with the bottom 21 of the second bracket 2.

Referring to fig. 2, the vertical portion is formed with a reinforcing portion 8 extending in a length direction thereof, the reinforcing portion 8 being formed by concave-convex deformation of a body thereof. The horizontal part is provided with a flange 31, and the flange 31 is bonded and welded with the side surface of the upper plate 5 at the rear section of the longitudinal beam.

Referring to fig. 4, the bottom 21 of the second bracket 2 forms the bottom of the box body, and is adapted to the inner structure of the lower plate 6 at the rear section of the longitudinal beam, and is welded thereto in a fitting manner. Two supporting parts are further formed on the second bracket 2, and the two supporting parts form the side faces of the box body and are welded with the inner side of the first bracket 1 and the inner side of the upper plate 5 at the rear section of the longitudinal beam respectively.

Referring to fig. 1 and 2, the third bracket 3 is rectangular in shape, and forms a side surface of the box body, and three sides of the rectangle are respectively formed with a flange 31, and the flange 31 is respectively bonded and welded with the inner side of the horizontal part of the first bracket 1, the inner side of the bottom 21 of the second bracket 2 and the supporting part of the second bracket 2.

Referring to fig. 2 to 4, a supporting surface of the second bracket 2 and the third bracket 3 are each formed with a reinforcing portion 8 extending in a length direction thereof, and the reinforcing portion 8 is formed by concave-convex deformation of a body thereof. The first bracket 1 and the third bracket 3 are provided with weight reducing holes 7.

Embodiment 2 an automobile includes the above rear subframe mounting point reinforcing structure. It should be noted that the automobile may be a two-compartment car, a three-compartment car, a pick-up truck, an SUV, an MPV, a minibus, a heavy truck, a public bus or an off-road vehicle, etc. of a conventional fuel automobile and a new energy automobile.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rear subframe mounting point additional strengthening, its characterized in that includes longeron back end upper plate (5), longeron back end hypoplastron (6), first support (1), second support (2), third support (3) and screw thread bushing pipe (4), longeron back end upper plate (5) and longeron back end hypoplastron (6) welding to be formed with the cavity, first support (1), second support (2) and third support (3) welding mutually form the box body that has the uncovered, screw thread bushing pipe (4) support in the middle part of the box body, both ends respectively with the top and the bottom of box body are connected, the box body is located the automobile body side mounting point department of back subframe, and be located in the cavity, the top and the bottom of box body are welded with longeron back end upper plate (5) and longeron back end hypoplastron (6) respectively.

2. The reinforcing structure for mounting points of rear auxiliary frames according to claim 1, wherein the first bracket (1) is integrally L-shaped, a horizontal part of the L shape forms the top of the box body and is bonded and welded with the inner side of the upper plate (5) of the rear section of the longitudinal beam, a vertical part forms the side surface of the box body, and the free end of the vertical part is connected with the bottom (21) of the second bracket (2).

3. The rear subframe-mounting-point reinforcing structure according to claim 2, wherein the vertical portion is formed with a reinforcing portion (8) extending in a longitudinal direction thereof, the reinforcing portion (8) being formed by concave-convex deformation of a body thereof.

4. The rear subframe mounting point reinforcing structure according to claim 2, wherein a flange (31) is formed on the horizontal portion, and the flange (31) is bonded to the side face of the side member rear section upper plate (5) by welding.

5. The reinforcing structure for the mounting point of the rear subframe according to claim 1, wherein the bottom (21) of the second bracket (2) forms the bottom of the box body, is adapted to the inner side structure of the lower plate (6) of the rear section of the side member, and is bonded and welded thereto.

6. The reinforcing structure for the mounting point of the rear subframe according to claim 5, wherein two supporting portions are further formed on the second bracket (2), and the two supporting portions form side surfaces of the box body and are welded to the inner side of the first bracket (1) and the inner side of the upper plate (5) of the rear section of the side member, respectively.

7. The reinforcing structure for mounting points of rear auxiliary frames according to claim 1, wherein the third bracket (3) is rectangular in shape as a whole and forms one side surface of the box body, and flanges (31) are formed on three sides of the rectangle, and the flanges (31) are respectively bonded and welded with the inner side of the horizontal part of the first bracket (1), the inner side of the bottom part (21) of the second bracket (2) and the supporting part of the second bracket (2).

8. The rear subframe-mounting-point reinforcing structure according to claim 1, wherein a support surface of the second bracket (2) and the third bracket (3) are each formed with a reinforcing portion (8) extending in a longitudinal direction thereof, the reinforcing portion (8) being formed by concave-convex deformation of a body thereof.

9. The rear subframe-mounting-point reinforcing structure according to claim 1, wherein weight-reducing holes (7) are formed in each of the first bracket (1) and the third bracket (3).

10. An automobile comprising the rear subframe mounting point reinforcing structure as claimed in any one of claims 1 to 9.