Automobile auxiliary frame and automobile
By designing a box-shaped rear swing arm mounting section that connects to the crossbeam and longitudinal beam, and incorporating internal reinforcements and triangular reinforcements, combined with a stamped U-shaped diagonal tie beam and integrated design, the problems of increased weight and cost in existing technologies have been solved, achieving high strength and lightweight automotive subframes.
Patent Information
- Application Number
- CN202520113656.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In existing technologies, increasing the strength of the suspension and control arm mounting positions by adding materials or using aluminum alloy casting structures leads to an increase in the overall weight and cost of the vehicle, which is not conducive to vehicle lightweighting.
Design an automotive subframe that uses a box-shaped rear swing arm mounting section connected to the crossbeam and longitudinal beam, and incorporates internal reinforcements and triangular reinforcements. Combined with a stamped U-shaped diagonal tie beam and integrated design, the structure is simplified, and the amount of material used and the weight are reduced.
It significantly enhances the strength and rigidity of the subframe in the corner areas, improving vehicle stability and safety, while also achieving lightweighting and reducing manufacturing costs and weight.
Smart Images
Figure CN223590831U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile, specifically, relate to an automobile auxiliary frame and automobile. BACKGROUND
[0002] The auxiliary frame is generally designed as a frame structure, and is used for supporting front and rear axles and mounting a suspension and a swing arm. In the prior art, the rigidity is improved by increasing materials or adopting an aluminum alloy casting structure, so as to improve the strength of the mounting position of the suspension and the swing arm, which leads to an increase in the weight and cost of the whole vehicle and is not conducive to the lightweight of the automobile. SUMMARY
[0003] Therefore, the purpose of the embodiments of the present application is to provide an automobile auxiliary frame, which can improve the problem of the increase in the weight and cost of the whole vehicle and is not conducive to the lightweight of the automobile.
[0004] To achieve the above technical purpose, the technical scheme adopted by the present application is as follows:
[0005] In a first aspect, the embodiments of the present application provide an automobile auxiliary frame, which comprises a cross beam and a longitudinal beam, the cross beam and the longitudinal beam are connected and constitute a corner part, and further comprises a rear swing arm mounting part which is in a box-shaped structure, the rear swing arm mounting part is located outside the corner part, and the rear swing arm mounting part is connected with the cross beam and the longitudinal beam.
[0006] Further, the end of the cross beam and the end of the longitudinal beam close to the cross beam are both connected to the inside of the rear swing arm mounting part.
[0007] Further, the rear swing arm mounting part comprises:
[0008] a rear swing arm upper mounting bracket connected with the cross beam and the longitudinal beam;
[0009] a rear swing arm lower mounting bracket connected with the cross beam and the longitudinal beam;
[0010] The rear swing arm upper mounting bracket and the rear swing arm lower mounting bracket are engaged, and the rear swing arm upper mounting bracket and the rear swing arm lower mounting bracket form an upper boundary and a lower boundary of the box-shaped structure, respectively.
[0011] Further, the rear swing arm mounting part is provided with a reinforcing member inside, and the reinforcing member is connected with the rear swing arm upper mounting bracket and the rear swing arm lower mounting bracket.
[0012] Further, the automobile auxiliary frame further comprises a front suspension bracket for mounting a front suspension, and the end of the longitudinal beam away from the rear swing arm mounting part is bent upwards and connected with the front suspension bracket.
[0013] Further, a triangular reinforcement is connected to the cross beam and the longitudinal beam, and is located inside the corner and embedded in the inside of the corner.
[0014] Further, the automobile subframe further comprises a front swing arm mounting bracket connected to the triangular reinforcement and the longitudinal beam.
[0015] Further, the automobile subframe further comprises a front end inclined cable beam arranged obliquely relative to the longitudinal beam, the front end inclined cable beam being connected to the longitudinal beam and the cross beam, the front end inclined cable beam and the triangular reinforcement being located on two sides of the longitudinal beam respectively, and the front end inclined cable beam having a U-shaped cross section.
[0016] Further, the cross section of the cross beam is 0-shaped.
[0017] In the second aspect, the application provides an automobile comprising the automobile subframe.
[0018] The automobile subframe has the following advantages:
[0019] In the technical scheme provided by the application, the rear swing arm mounting portion is introduced, which has a box-shaped structure and is connected to the cross beam and the longitudinal beam, thereby significantly enhancing the strength and rigidity of the subframe in the corner area. This design helps to improve the stability and safety of the vehicle during driving, especially in complex road conditions or emergency situations, effectively reducing the deformation and damage of the frame. At the same time, the box-shaped structure of the rear swing arm mounting portion not only improves the strength and rigidity, but also realizes lightweight.
[0020] In the technical scheme of the application, the end of the cross beam and the end of the longitudinal beam close to the end of the cross beam are connected to the inside of the rear swing arm mounting portion, which further enhances the overall structure of the frame and improves the strength and durability of the connection part. At the same time, the clamping design of the rear swing arm upper mounting bracket and the rear swing arm lower mounting bracket not only simplifies the assembly process, but also enhances the stability and carrying capacity of the rear swing arm mounting portion.
[0021] In the technical scheme of the application, the reinforcement inside the rear swing arm mounting portion and the triangular reinforcement connected to the cross beam and the longitudinal beam further improve the strength and rigidity of the frame. These reinforcements not only help to resist external impact and vibration, but also optimize the stress distribution of the frame, prolonging the service life of the frame. BRIEF DESCRIPTION OF DRAWINGS
[0022] The application can be further illustrated by the non-limiting embodiments shown in the accompanying drawings. It should be understood that the following drawings only show certain embodiments of the application, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained without creative labor.
[0023] Figure 1 Structure diagram provided for the embodiment of the present application.
[0024] Figure 2 Structure diagram provided for the embodiment of the present application. Figure 1 Side view of the structure.
[0025] Figure 3 Structure diagram provided for the embodiment of the present application.
[0026] Figure 4 Structure diagram provided for the embodiment of the present application.
[0027] Figure 5 Structure diagram provided for the embodiment of the present application.
[0028] Figure 6 Structure diagram provided for the embodiment of the present application.
[0029] Figure: 1 - rear cross beam; 2 - front cross beam; 3 - right longitudinal beam; 4 - left longitudinal beam; 5 - first rear swing arm mounting portion; 501 - first rear swing arm upper mounting bracket; 502 - first rear swing arm upper mounting bracket; 503 - reinforcing member; 6 - second rear swing arm mounting portion; 601 - second rear swing arm upper mounting bracket; 602 - second rear swing arm upper mounting bracket; 7 - first triangular reinforcing member; 8 - second triangular reinforcing member; 9 - first front swing arm mounting bracket; 10 - second front swing arm mounting bracket; 11 - first front end diagonal beam; 12 - second front end diagonal beam; 13 - first rear suspension bracket; 14 - second rear suspension bracket; 15 - rear suspension bracket. DETAILED DESCRIPTION
[0030] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are denoted by the same reference numerals in the drawings or description, and the implementation not shown or described in the drawings is in the form known to those skilled in the art. In the description of the present application, the terms "first", "second", etc. are used only to distinguish the description and cannot be understood as indicating or implying relative importance.
[0031] The existing technology proposes a subframe ring beam structure, which includes a first front cross beam, a second front cross beam, a first rear cross beam, a second rear cross beam, a right longitudinal beam, a left longitudinal beam, a first diagonal beam and a second diagonal beam combined into a trapezoidal frame structure. Suspension brackets are respectively welded between the first front longitudinal beam and the second front longitudinal beam. Suspension brackets are welded between the first rear longitudinal beam and the second rear longitudinal beam. Swing arm mounting brackets are welded on the right longitudinal beam and the left longitudinal beam.
[0032] The above structure improves the front suspension mounting point stiffness through the first front cross beam and the second front cross beam. The first rear cross beam and the second rear cross beam improve the rear suspension mounting point stiffness. The lateral stiffness of the swing arm front and rear mounting points is improved as a whole.
[0033] However, the structure distributes 4 cross beams, i.e., the first front cross beam, the second front cross beam, the first rear cross beam, and the second rear cross beam, in the transverse direction. The suspension mounting bracket and the suspension passive side bracket are designed in a split body. Although the stiffness and strength are improved, the manufacturing cost is increased and the weight is also increased.
[0034] The prior art has the following problems:
[0035] Problem one: The stiffness of the front suspension bracket is improved by combining the first front cross beam, the second front cross beam, the first inclined beam, and the second inclined beam into a trapezoidal frame structure to improve the stiffness. The number of parts is increased, the material is increased, and the overall weight is increased. This is not conducive to lightweight. The welding process is more complex, and the manufacturing cost is increased.
[0036] Problem two: The front suspension bracket is designed in a split body, i.e., the mounting bracket is designed on the subframe, and the mounting bracket of the suspension passive side is designed independently. The parts are doubled in number, and a connecting piece is added, which is not conducive to lightweight.
[0037] Problem three: The stiffness of the rear suspension bracket is improved by the first rear cross beam and the second rear cross beam to improve the stiffness of the rear suspension mounting point and the stiffness of the swing arm mounting point. The material is increased and the overall weight is increased.
[0038] The present embodiment proposes a subframe for a vehicle. The first front cross beam and the second front cross beam of the prior art are integrated and designed as one cross beam. The suspension mounting bracket and the suspension bracket are integrated and designed. The longitudinal beam is designed to be bent upward, the height of the suspension bracket is reduced to reduce the weight and improve the stiffness. The suspension bracket is extended to the left and right to the longitudinal beam to improve the lateral stiffness.
[0039] In addition, the inclined beam is adjusted from a round tube structure to a stamped U-shaped structure and is arranged outside the longitudinal beam and is connected to the front cross beam. The amount of material is reduced, and the lightweight result is better.
[0040] In the above structure, the first rear cross beam and the second rear cross beam are integrated and designed as one rear cross beam. The amount of material is reduced. The process is reduced to reduce the manufacturing cost.
[0041] In addition, the rear cross beam adopts a 0-shaped cross section, the cross section width is increased, and the longitudinal stiffness is improved.
[0042] In addition, a triangular reinforcement for the rear cross beam is added, and a single plate stamping process is adopted. The triangular reinforcement is formed between the swing arm front mounting point area and the rear beam to improve the stiffness and reduce the weight.
[0043] Furthermore, the rear swing arm mounting point adopts an upper and lower plate interlocking structure with internal reinforcements, connecting the longitudinal beam and the rear cross beam to form a triangular reinforcement structure. This improves the rigidity of the swing arm mounting point.
[0044] Specifically, such as Figure 1 As shown, it includes a rear crossbeam 1, a front crossbeam 2, a right longitudinal beam 3, and a left longitudinal beam 4, which are connected to form a "well" shaped structure. The rear crossbeam 1 and the front crossbeam 2 are spaced apart and arranged in parallel or nearly parallel order, while the right longitudinal beam 3 and the left longitudinal beam 4 are spaced apart and arranged in parallel or nearly parallel order.
[0045] The subframe structure adopts a grid-like layout, which increases the space available for the powertrain. This is more conducive to platform-based development that can adapt to the space requirements of different powertrains.
[0046] In this embodiment, a first rear swing arm mounting part 5 is provided at the corner formed by the rear crossbeam 1 and the right longitudinal beam 3, and a second rear swing arm mounting part 6 is provided at the corner formed by the rear crossbeam 1 and the left longitudinal beam 4. The first rear swing arm mounting part 5 and the second rear swing arm mounting part 6 are the mounting points of the rear swing arm. Therefore, the first rear swing arm mounting part 5 and the second rear swing arm mounting part 6 have the same structure and are arranged in an axially symmetrical manner.
[0047] Both the first rear swing arm mounting part 5 and the second rear swing arm mounting part 6 are boxed structures. Taking the first rear swing arm mounting part 5 as an example, the first rear swing arm mounting part 5 is welded to the right longitudinal beam 3 and the rear cross beam 1, and the ends of the right longitudinal beam 3 and the rear cross beam 1 near the first rear swing arm mounting part 5 are connected to the interior of the first rear swing arm mounting part 5, which improves the strength of the rear swing arm mounting point. At the same time, since the first rear swing arm mounting part 5 is a boxed structure, the overall weight is also reduced.
[0048] Understandably, the second rear swing arm mounting part 6 is connected to both the rear crossbeam 1 and the left longitudinal beam 4.
[0049] like Figure 1 and Figure 3 As shown, the first rear swing arm mounting part 5 includes a first rear swing arm upper mounting bracket 501 and a first rear swing arm upper mounting bracket 502. The first rear swing arm upper mounting bracket 501 and the first rear swing arm upper mounting bracket 502 are arranged vertically and interlocked to form the upper and lower boundaries of the box-shaped structure of the first rear swing arm mounting part 5. The first rear swing arm upper mounting bracket 501 is connected to both the rear crossbeam 1 and the right longitudinal beam 3, and the first rear swing arm lower mounting bracket 502 is also connected to both the rear crossbeam 1 and the right longitudinal beam 3.
[0050] like Figure 3As shown, in order to further improve the first rear swing arm mounting portion 5, a reinforcing member 503 is arranged inside the first rear swing arm mounting portion 5, and the reinforcing member 503 is connected with the first rear swing arm upper mounting bracket 501 and the first rear swing arm upper mounting bracket 502.
[0051] It can be understood that, as Figure 1 shown, the second rear swing arm mounting portion 6 includes the second rear swing arm upper mounting bracket 601 and the second rear swing arm upper mounting bracket 602 arranged in an upper and lower manner and coupled with each other, and a reinforcing member is also arranged inside the second rear swing arm mounting portion 6, and the reinforcing member is connected with the second rear swing arm upper mounting bracket 601 and the second rear swing arm upper mounting bracket 602.
[0052] In the embodiment, the right mounting point of the stabilizer and the right mounting point of the stabilizer are arranged on the first rear swing arm upper mounting bracket 501, and the left mounting point of the stabilizer and the left mounting point of the stabilizer are arranged on the second rear swing arm upper mounting bracket 601.
[0053] As shown in the embodiment Figure 1 , the first front suspension bracket 13 and the second front suspension bracket 14 are arranged, and the first front suspension bracket 13 and the second front suspension bracket 14 are mounting points of the rear suspension, the first front suspension bracket 13 and the second front suspension bracket 14 are the same structure and are arranged in an axisymmetric manner.
[0054] The first front suspension bracket 13 is connected with the front cross beam 2 and the right longitudinal beam 3, and specifically connected with the front cross beam 2 through welding and extended to the right longitudinal beam 3; the second front suspension bracket 14 is connected with the front cross beam 2 and the left longitudinal beam 4, and specifically connected with the front cross beam 2 through welding and extended to the left longitudinal beam 4. The embodiment realizes the integrated design of the first front suspension bracket 13 and the second front suspension bracket 14 on the "well" type structure, reduces the mounting bolts and simplifies the bracket structure. It is more beneficial to realize lightweight and low cost.
[0055] As shown in the embodiment Figure 2 , the end of the left longitudinal beam 4 away from the second rear swing arm mounting portion 6 and the end of the right longitudinal beam 3 away from the first rear swing arm mounting portion 5 are arranged in an upward inclined manner, which reduces the height of the second front suspension bracket 14 and the first front suspension bracket 13.
[0056] In the embodiment, the rear suspension bracket 15 is arranged on the rear cross beam 1, and the rear suspension bracket 15 is a mounting point of the rear suspension.
[0057] As shown in the embodiment Figure 1 and Figure 6As shown, the first triangular reinforcement 7 and the second triangular reinforcement 8 are arranged inside the "well" structure, the first triangular reinforcement 7 is arranged on the first corner formed by the right longitudinal beam 3 and the rear cross beam 1, and is matched with the shape of the first corner, and is connected with the right longitudinal beam 3 and the rear cross beam 1; the second triangular reinforcement 8 is arranged on the second corner formed by the left longitudinal beam 4 and the rear cross beam 1, and is matched with the shape of the corner, and is connected with the left longitudinal beam 4 and the rear cross beam 1, thereby improving the strength and rigidity of the whole auxiliary frame.
[0058] The first front swing arm mounting bracket 9 and the second front swing arm mounting bracket 10 are arranged in the embodiment, which are mounting points of the front swing arm, the first front swing arm mounting bracket 9 is connected to the right longitudinal beam 3 and is extended to the first triangular reinforcement 7, and the second front swing arm mounting bracket 10 is connected to the left longitudinal beam 4 and is extended to the second triangular reinforcement 8. Through the above structure, the first front swing arm mounting bracket 9 and the second front swing arm mounting bracket 10 are integrated on the "well" structure, thereby improving the strength of the front swing arm mounting point.
[0059] The first front end cable beam 11 and the second front end cable beam 12 are arranged in the embodiment, two ends of the first front end cable beam 11 are connected with the right longitudinal beam 3 and the front cross beam 2 respectively, and form a triangle with the two; two ends of the first front end cable beam 11 are connected with the left longitudinal beam 4 and the front cross beam 2 respectively, and form a triangle with the two. In the embodiment, the first front end cable beam 11 and the first triangular reinforcement 7 are respectively arranged on two sides of the right longitudinal beam 3, and the second front end cable beam 12 and the second triangular reinforcement 8 are respectively arranged on two sides of the left longitudinal beam 4, thereby improving the strength of the "well" structure through four triangular structures.
[0060] In the embodiment, as shown in the figure, Figure 4 The cross section of the rear cross beam 1 is designed as O-shaped, thereby improving the rigidity, simplifying the forming process, and reducing the manufacturing cost.
[0061] In the embodiment, as shown in the figure, Figure 5 The first front end cable beam 11 and the second front end cable beam 12 are formed by stamping process, and the cross section adopts U-shaped structure, thereby being higher in strength and lighter in weight.
[0062] Through the above structure, the embodiment realizes the maximum lightweight of the structure while meeting the rigidity and strength targets, reduces the product weight, and realizes the better performance of the whole vehicle.
[0063] The embodiment further provides an automobile provided with the above automobile auxiliary frame.
[0064] The above merely provides an example of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. An automobile subframe comprising a cross member and a longitudinal member connected to form a corner, characterized by: Also included are: The rear swing arm mounting portion is a box-shaped structure, is located outside the corner portion, and is connected to the cross beam and the longitudinal beam.
2. The automotive subframe of claim 1, wherein: The end of the cross beam and the end of the longitudinal beam close to the cross beam are both connected to the inside of the rear swing arm mounting portion.
3. The automobile subframe according to claim 1 or 2, characterized by: The rear swing arm mounting portion includes: The upper rear swing arm mounting bracket is connected to the cross beam and the longitudinal beam; The lower rear swing arm mounting bracket is connected to the cross beam and the longitudinal beam; The upper rear swing arm mounting bracket and the lower rear swing arm mounting bracket are engaged, and form the upper boundary and the lower boundary of the box-shaped structure, respectively.
4. The automotive subframe of claim 3, wherein: The inside of the rear swing arm mounting portion is provided with a reinforcing member, which is connected to the upper rear swing arm mounting bracket and the lower rear swing arm mounting bracket.
5. The automotive subframe of claim 1, wherein: Also included is a front suspension bracket for mounting a front suspension, the end of the longitudinal beam away from the rear swing arm mounting portion is bent upward, and the end is connected to the front suspension bracket.
6. The automotive subframe of claim 1, wherein: Also included is a triangular reinforcing member, which is connected to the cross beam and the longitudinal beam, is located inside the corner portion, and is embedded in the inside of the corner portion.
7. The automotive subframe of claim 6, wherein: The automobile subframe also includes a front swing arm mounting bracket, which is connected to the triangular reinforcing member and the longitudinal beam.
8. The automotive subframe of claim 6, wherein: The automobile subframe also includes a front end inclined cable beam arranged obliquely relative to the longitudinal beam, which is connected to the longitudinal beam and the cross beam, and is located on both sides of the longitudinal beam with the triangular reinforcing member, and has a U-shaped cross section.
9. The automotive subframe of claim 1, wherein: The cross section of the cross beam is 0-shaped.
10. An automobile characterized by comprising: The automobile subframe includes any one of claims 1-9.