Automobile rear auxiliary frame assembly
By designing the rear subframe assembly of the automobile, and adjusting the casing position and cross-platform design using the welded surface area, the problems of long development cycle and high cost of the rear subframe are solved, and the sharing of multiple models and structural strength is achieved.
Patent Information
- Application Number
- CN202421163661.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-24
AI Technical Summary
The development cycle of the rear subframe is long and the cost is high, and the update iteration cycle is shortened, resulting in huge challenges in development speed and cost. How to shorten the development cycle and achieve sharing of multiple models to reduce tooling and verification investment.
Design a rear subframe assembly of automobiles, including front beam, right longitudinal beam, rear beam and left longitudinal beam subassembly, and form a square cavity structure with four sides closed by welding, and form welding at both ends of the longitudinal assembly. In the shape surface area, change the welding position of the casing to achieve assembly and adjustment, adopt cross-platform design and part compatibility ideas, adapt to the sharing of multiple models.
It realizes rapid installation of rear subframes of different models and sharing of multiple models, reduces work and verification investment, and improves structural strength and applicability.
Smart Images
Figure CN222247370U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of automobile suspension, and particularly relates to an automobile rear auxiliary frame assembly. Background Art
[0002] With the rapid development of the new energy vehicle market, the performance requirements for the entire vehicle are becoming higher and higher, the safety performance is more demanding, the reliability and long mileage, and the energy saving and consumption reduction requirements are stricter. In order to meet these requirements, the rear subframe plays a vital role in the entire vehicle.
[0003] As the main structural component of the vehicle, the rear subframe has the characteristics of long development cycle and large investment. With the continuous development and expansion of the automobile market, the product update and iteration cycle is constantly shortening, and the development speed and cost of the rear subframe are facing huge challenges.
[0004] Therefore, how to shorten the development cycle of multiple rear subassemblies to the development cycle of one rear subassembly, that is, how to allow one rear subassembly to adapt to multiple vehicle assemblies, thereby reducing the one-time tooling investment and verification investment at the same time, is an issue that technical personnel in this field urgently need to solve. Utility Model Content
[0005] In view of the above problems, the utility model proposes an automobile rear subframe assembly, including a rear subframe welding assembly, wherein the rear subframe welding assembly includes a front crossbeam subassembly, a right longitudinal beam subassembly, a rear crossbeam subassembly and a left longitudinal beam subassembly, all of which are formed by stamping upper and lower single-layer steel plates, and then connected in sequence to enclose a square cavity structure closed on four sides;
[0006] The two ends of the right longitudinal beam sub-assembly and the left longitudinal beam sub-assembly are extended to form a welding surface area for welding the sleeve;
[0007] It also includes a rear subframe and a rear subframe bushing. The rear subframe bushing is pressed into a sleeve. The rear subframe bushing and the rear subframe are assembled. The assembly adjustment can be achieved by changing the welding position of the sleeve.
[0008] Preferably, the left longitudinal beam subassembly comprises a left upper longitudinal beam upper body, a left upper longitudinal beam lower body, a left swing arm front bracket, a left lower longitudinal beam upper body and a left lower longitudinal beam lower body, which are welded in sequence to form an I-shaped left frame;
[0009] The right longitudinal beam subassembly includes a right upper longitudinal beam upper body, a right upper longitudinal beam lower body, a right swing arm front bracket, a right lower longitudinal beam upper body and a right lower longitudinal beam lower body, which are welded in sequence to form an I-shaped right frame;
[0010] Both ends of the lower body of the right upper longitudinal beam and the lower body of the right lower longitudinal beam are extended to form welding surface areas.
[0011] Preferably, the left swing arm front bracket and the right swing arm front bracket are both integrally stamped and formed.
[0012] Preferably, the left longitudinal beam sub-assembly also includes a left swing arm rear bracket front plate and a left swing arm rear bracket front plate, which are respectively welded to both sides of the I-shaped left frame to form the left side surface of the square cavity.
[0013] Preferably, the right longitudinal beam sub-assembly also includes a right swing arm rear bracket front plate and a right swing arm rear bracket rear plate, which are respectively welded to both sides of the I-shaped right frame to form the right side surface of the square cavity.
[0014] Preferably, the front cross beam subassembly includes a front cross beam upper body and a front cross beam lower body welded to each other to form a front side surface.
[0015] Preferably, the rear cross beam subassembly includes a rear cross beam upper body and a rear cross beam lower body welded to each other to form a rear side surface.
[0016] Preferably, the front crossbeam upper body, the front crossbeam lower body, the rear crossbeam upper body and the rear crossbeam lower body are all integrally formed by sheet metal stamping.
[0017] Preferably, the rear subframe welding assembly further comprises a left upper swing arm bracket front plate and a left upper swing arm bracket rear plate, which are welded on the left side surface;
[0018] It also includes a right upper swing arm bracket front plate body and a right upper swing arm bracket rear plate body, which are welded to the right side surface.
[0019] Preferably, flanges are provided on the front sheet of the left upper swing arm bracket, the rear sheet of the left upper swing arm bracket, the front sheet of the right upper swing arm bracket and the rear sheet of the right upper swing arm bracket.
[0020] Preferably, the rear subframe welding assembly further includes a plurality of fixing brackets, which can be arranged at corresponding installation points as required.
[0021] Beneficial Effects
[0022] 1. The present application forms a welding surface area D at both ends of the longitudinal assembly and changes the sleeve welding position, so that the rear subframe bushing and the rear subframe can be adjusted during assembly, which means that even the rear subframes of different models can be quickly installed with the rear subframe bushing. Therefore, the cross-platform design concept is mainly utilized, and the rear subframes of multiple models are shared through the synchronous arrangement of multiple models and the idea of parts compatible design.
[0023] 2. In addition, the left swing arm front bracket and the right swing arm front bracket are both integrally stamped U-shaped structures, so the enclosed frame has good structural strength.
[0024] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 A schematic diagram of a rear subframe welding assembly in an embodiment of the utility model is shown;
[0027] Figure 2 A schematic diagram of a rear subframe and a rear subframe bushing in an embodiment of the utility model is shown;
[0028] Figure 3 A schematic diagram of the welding surface area in an embodiment of the utility model is shown;
[0029] Figure 4 A schematic diagram of a fixing bracket in an embodiment of the utility model is shown.
[0030] In the figure,
[0031] 2. Rear subframe bushing;
[0032] D. Welding surface area;
[0033] A, left side; 4, upper body of left upper longitudinal beam; 5, lower body of left upper longitudinal beam; 14, front bracket of left swing arm; 8, upper body of left lower longitudinal beam; 9, lower body of left lower longitudinal beam; 16, front plate of left swing arm rear bracket; 17, rear plate of left swing arm rear bracket;
[0034] 20. Front piece of left upper swing arm bracket; 21. Rear piece of left upper swing arm bracket;
[0035] B, right side; 6, upper body of right upper longitudinal beam; 7, lower body of right upper longitudinal beam; 15, front bracket of right swing arm; 10, upper body of right lower longitudinal beam; 11, lower body of right lower longitudinal beam; 18, front plate of right swing arm rear bracket; 19, rear plate of right swing arm rear bracket;
[0036] 22. Front piece of the right upper swing arm bracket; 23. Rear piece of the right upper swing arm bracket;
[0037] 3. Front crossbeam lower body; 30. Front crossbeam upper body; 12. Rear crossbeam upper body; 13. Rear crossbeam lower body;
[0038] 24. Front suspension left bracket; 25. Front suspension right bracket; 26. Left rear suspension left bracket; 27. Left rear suspension right bracket; 28. Right rear suspension left bracket; 29. Right rear suspension right bracket; 32. Left stabilizer bar bracket; 33. Right stabilizer bar bracket. DETAILED DESCRIPTION
[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0040] refer to Figure 1 , Figure 1 A schematic diagram of a rear subframe welding assembly in an embodiment of the utility model is shown;
[0041] A rear subframe assembly of an automobile includes a rear subframe welding assembly, wherein the rear subframe welding assembly includes a front crossbeam subassembly, a right longitudinal beam subassembly, a rear crossbeam subassembly and a left longitudinal beam subassembly, all of which are formed by stamping upper and lower single-layer steel plates, and then connected in sequence to form a square cavity structure closed on four sides;
[0042] The two ends of the right longitudinal beam sub-assembly and the left longitudinal beam sub-assembly are extended to form a welding surface area D for welding the sleeve;
[0043] refer to Figure 2 , Figure 2 A schematic diagram of a rear subframe and a rear subframe bushing in an embodiment of the utility model is shown;
[0044] The vehicle also includes a rear sub-frame and a rear sub-frame bushing 2. The rear sub-frame bushing 2 is pressed into the sleeve, and the rear sub-frame bushing 2 and the rear sub-frame are assembled.
[0045] By forming a welding surface area D at both ends of the longitudinal assembly and changing the sleeve welding position, the rear subframe bushing 2 and the rear subframe can be adjusted during assembly, which means that even the rear subframes of different vehicle models can be quickly installed with the rear subframe bushing 2. Therefore, the cross-platform design concept is mainly utilized, through the synchronous arrangement of multiple vehicle models and the idea of parts compatible design, the rear subframes of multiple vehicle models can be shared.
[0046] Furthermore, the left swing arm front bracket 14 and the right swing arm front bracket 15 are both integrally stamped and formed into a U-shaped structure;
[0047] The right longitudinal beam sub-assembly includes a left upper longitudinal beam upper body 4, a left upper longitudinal beam lower body 5, a left swing arm front bracket 14, a left lower longitudinal beam upper body 8 and a left lower longitudinal beam lower body 9, which are welded in sequence to form an I-shaped left frame;
[0048] The right longitudinal beam sub-assembly includes a right upper longitudinal beam upper body 6, a right upper longitudinal beam lower body 7, a right swing arm front bracket 15, a right lower longitudinal beam upper body 10 and a right lower longitudinal beam lower body 11, which are welded in sequence to form an I-shaped right frame;
[0049] refer to Figure 3 , Figure 3 A schematic diagram of the welding surface area D in the embodiment of the utility model is shown;
[0050] Both ends of the right upper longitudinal beam lower body 7 and the right lower longitudinal beam lower body 11 are extended to form a welding surface area D.
[0051] The rear subframe bushing 2 and the rear subframe are assembled to achieve 0 in the longitudinal direction. ～ 55mm adjustment range, 0.000mm in horizontal and height direction ～ The adjustment amount is about 15mm, and there are a variety of process methods to achieve the sleeve welding gap. The economic calculation can be made according to the product dimension requirements, and the applicability is higher.
[0052] From the above description, it can be learned that the rear subframe welding assembly includes the front crossbeam subassembly, the right longitudinal beam subassembly, the rear crossbeam subassembly and the left longitudinal beam subassembly, all of which are formed by stamping the upper and lower single-layer steel plates, and then connected in sequence to form a square cavity structure closed on all four sides.
[0053] Further, the front crossbeam subassembly includes a front crossbeam upper body 30 and a front crossbeam lower body 3 that are welded to each other to form a front side surface;
[0054] The rear cross beam sub-assembly includes a rear cross beam upper body 12 and a rear cross beam lower body 13 which are welded to each other to form a rear side surface.
[0055] In order to improve the strength and rigidity requirements of the rear subframe welding assembly, taking the front crossbeam subassembly as an example, the front crossbeam upper body 30 and the front crossbeam lower body 3 are both formed in one piece by sheet metal stamping. In addition, the user can flexibly change the cross section longitudinally relative to the tube beam to meet the requirements of different parts for structural strength, thereby achieving a better lightweight effect;
[0056] At the same time, because it is developed for a multi-platform model, local avoidance design can be flexibly carried out to adapt to different layout requirements.
[0057] The right longitudinal beam sub-assembly, rear cross beam sub-assembly and left longitudinal beam sub-assembly all adopt this design concept, which will not be elaborated here.
[0058] The left longitudinal beam sub-assembly also includes a left swing arm rear bracket front plate 16 and a left swing arm rear bracket rear plate 17;
[0059] The left longitudinal beam sub-assembly also includes a left swing arm rear bracket front plate 16 and a left swing arm rear bracket rear plate 17, which are respectively welded to both sides of the I-shaped left frame to form a left side surface A of the square cavity.
[0060] The right longitudinal beam sub-assembly also includes a right swing arm rear bracket front plate 18 and a right swing arm rear bracket rear plate 19, which are respectively welded to both sides of the I-shaped right frame to form the right side surface B of the square cavity.
[0061] Furthermore, the rear subframe welding assembly also includes a left upper swing arm bracket front plate 20, a left upper swing arm bracket rear plate 21, a right upper swing arm bracket front plate 22 and a right upper swing arm bracket rear plate 23;
[0062] The rear subframe welding assembly also includes a left upper swing arm bracket front plate 20 and a left upper swing arm bracket rear plate 21, which are welded on the left side surface A;
[0063] It also includes a right upper swing arm bracket front plate 22 and a right upper swing arm bracket rear plate 23, which are welded on the right side surface B.
[0064] In order to ensure that the rear subframe welding assembly has good structural strength, flanges are provided on the left upper swing arm bracket front plate 20, the left upper swing arm bracket rear plate 21, the right upper swing arm bracket front plate 22 and the right upper swing arm bracket rear plate 23 for reinforcement, and a split structure is adopted to reduce the difficulty of forming.
[0065] The rear subframe welding assembly also includes a plurality of fixing brackets, which play a fixing and supporting role when the rear subframe bushing 2 and the rear subframe are assembled, so the fixing brackets can be independently selected and installed in positions according to the actual vehicle model and user needs.
[0066] refer to Figure 4 , Figure 4 A schematic diagram of a fixing bracket in an embodiment of the utility model is shown;
[0067] In this embodiment, the fixed bracket includes a front suspension left bracket 24, a front suspension right bracket 25, a left rear suspension left bracket 26, a left rear suspension right bracket 27, a right rear suspension left bracket 28, a right rear suspension right bracket 29, a left stabilizer bar bracket 32 and a right stabilizer bar bracket 33, which can be arranged at corresponding installation points as needed.
[0068] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A rear subframe assembly of an automobile, characterized in that: It includes a rear subframe welding assembly, which includes a front crossbeam subassembly, a right longitudinal beam subassembly, a rear crossbeam subassembly and a left longitudinal beam subassembly, all of which are formed by stamping upper and lower single-layer steel plates, and then connected in sequence to form a square cavity structure closed on four sides; The two ends of the right longitudinal beam sub-assembly and the left longitudinal beam sub-assembly are extended to form a welding surface area (D) for welding the sleeve; It also comprises a rear sub-frame and a rear sub-frame bushing (2), wherein the rear sub-frame bushing (2) is pressed into a sleeve, and the rear sub-frame bushing (2) and the rear sub-frame are assembled, and assembly adjustment can be achieved by changing the welding position of the sleeve.
2. The automobile rear subframe assembly according to claim 1, characterized in that: The left longitudinal beam subassembly comprises a left upper longitudinal beam upper body (4), a left upper longitudinal beam lower body (5), a left swing arm front bracket (14), a left lower longitudinal beam upper body (8) and a left lower longitudinal beam lower body (9), which are welded in sequence to form an I-shaped left frame; The right longitudinal beam subassembly comprises a right upper longitudinal beam upper body (6), a right upper longitudinal beam lower body (7), a right swing arm front bracket (15), a right lower longitudinal beam upper body (10) and a right lower longitudinal beam lower body (11), which are welded in sequence to form an I-shaped right frame; Both ends of the lower body of the right upper longitudinal beam (7) and the lower body of the right lower longitudinal beam (11) are extended to form a welding surface area (D).
3. The automobile rear subframe assembly according to claim 2, characterized in that: The left swing arm front bracket (14) and the right swing arm front bracket (15) are both integrally stamped U-shaped structures.
4. The automobile rear subframe assembly according to claim 2, characterized in that: The left longitudinal beam sub-assembly also includes a left swing arm rear bracket front plate (16) and a left swing arm rear bracket rear plate (17), which are respectively welded to both sides of the I-shaped left frame to form a left side surface (A) of the square cavity.
5. The automobile rear subframe assembly according to claim 2, characterized in that: The right longitudinal beam subassembly also includes a right swing arm rear bracket front plate (18) and a right swing arm rear bracket rear plate (19), which are respectively welded to both sides of the I-shaped right frame to form the right side surface (B) of the square cavity.
6. The automobile rear subframe assembly according to claim 1, characterized in that: The front cross beam sub-assembly comprises a front cross beam upper body (30) and a front cross beam lower body (3) which are welded to each other to form a front side surface.
7. The automobile rear subframe assembly according to claim 1, characterized in that: The rear cross beam sub-assembly comprises a rear cross beam upper body (12) and a rear cross beam lower body (13) which are welded to each other to form a rear side surface.
8. The automobile rear subframe assembly according to claim 6, characterized in that: The front crossbeam upper body (30), the front crossbeam lower body (3), the rear crossbeam upper body (12) and the rear crossbeam lower body (13) are all integrally formed by sheet metal stamping.
9. The automobile rear subframe assembly according to claim 1, characterized in that: The rear subframe welding assembly also includes a left upper swing arm bracket front plate (20) and a left upper swing arm bracket rear plate (21), which are welded on the left side surface (A); It also comprises a right upper swing arm bracket front plate (22) and a right upper swing arm bracket rear plate (23), which are welded on the right side surface (B).
10. The automobile rear subframe assembly according to claim 9, characterized in that: The left upper swing arm bracket front plate (20), the left upper swing arm bracket rear plate (21), the right upper swing arm bracket front plate (22) and the right upper swing arm bracket rear plate (23) are provided with flanges.
11. The automobile rear subframe assembly according to claim 1, characterized in that: The rear subframe welding assembly also includes a plurality of fixing brackets, which can be arranged on corresponding installation points as required.