A bending-resistant swing arm assembly

Abstract

This application relates to a bending-resistant control arm assembly, specifically in the field of automotive control arm technology. The assembly includes a control arm body with three ends. Bushings are installed at the first and second ends of the control arm body, and a ball joint is installed at the third end. The control arm body includes an upper plate and a lower plate, which are fixed together by welding. A hollow space exists between the upper and lower plates. The middle of the upper plate is bent downwards to form a groove, within which two vertical plates are welded and fixed. Both ends of the vertical plates are located on the surface of the upper plate outside the groove and are welded and fixed to the surface of the upper plate. This application significantly strengthens the middle section of the upper plate through the design of the groove and the two vertical plates, improving bending resistance. Most of the vertical plates are located within the groove, avoiding excessive protrusion from the outer surface of the upper plate and minimizing interference with other vehicle structures. A reinforcing sleeve is used to specifically strengthen one arm of the control arm body, increasing strength and preventing deformation.

Description

Technical Field

[0001] This application relates to the field of automotive swing arm technology, and in particular to a bending-resistant swing arm assembly. Background Technology

[0002] The control arm is a type of automotive swing arm and a core component of the automotive suspension system. It employs a double-arm frame structure and a ball joint connection mechanism, using the universal joint characteristic to control the vertical movement of the tires. This component achieves dual shock absorption through a reduction gear structure and a rubber buffer layer. To reduce the weight of the control arm, hollow control arms are becoming increasingly common.

[0003] The utility model patent with announcement number CN211519164U discloses a front lower control arm assembly, including: a front lower control arm body, the front lower control arm body having a first assembly end for connecting a first bushing; the front lower control arm body includes: a lower plate, an upper plate and a spindle, the lower plate and the upper plate mutually enclosing each other to form a hollow structure.

[0004] Regarding the aforementioned technologies, the inventors believe that although the hollow structure of the swing arm assembly can significantly reduce weight, it poses a challenge to strength. The triangular middle part of the swing arm is a position prone to bending and deformation under large forces. Utility Model Content

[0005] This application provides a bending-resistant swing arm assembly, which improves the strength of the swing arm at the middle of the triangle by forming a local reinforcement structure through welding a vertical plate in the middle, thereby preventing deformation.

[0006] This application provides a bending-resistant swing arm assembly, which adopts the following technical solution:

[0007] A bending-resistant swing arm assembly includes a swing arm body with three ends. The first and second ends of the swing arm body are respectively fitted with bushings, and the third end of the swing arm body is fitted with a ball pin. The swing arm body includes an upper plate and a lower plate, which are fixed by welding. The upper plate and the lower plate are hollowed out. The middle part of the upper plate is bent downward to form a groove. Two upright plates are welded and fixed in the groove. The two upright plates are C-shaped and the openings of the C-shapes face each other. The two ends of the upright plates are located on the surface of the upper plate outside the groove, and the two ends of the upright plates are welded and fixed to the surface of the upper plate.

[0008] By adopting the above technical solution, the groove is not created by hollowing out, thus maintaining the original strength of the metal material in this part of the upper plate. The design of the groove and the two upright plates significantly strengthens the middle section of the upper plate, improving its bending resistance.

[0009] Optionally, a gap is left between the ends of the two uprights.

[0010] By adopting the above technical solution, the gap is used to avoid stress concentration problems after welding.

[0011] Optionally, mounting holes are provided on the upright plate.

[0012] By adopting the above technical solution, any accessory can be installed or pipelines can be laid through the mounting holes.

[0013] Optionally, the number of mounting holes on the upright plate is two, and the two mounting holes have different diameters.

[0014] By adopting the above technical solution, different diameter mounting holes make it easy for personnel to distinguish between them, avoiding errors in the installation position of accessories or pipelines.

[0015] Optionally, a reinforcing sleeve is fixedly provided on the outer sleeve of the swing arm body. The reinforcing sleeve is made of metal and is located between the upright plate and the bushing.

[0016] By adopting the above technical solution, the reinforcing sleeve effectively increases the thickness of the corresponding position of the swing arm body, thereby providing targeted reinforcement to that position of the swing arm body and preventing deformation.

[0017] Optionally, the reinforcing sleeve includes an upper half and a lower half, which are combined to form a cylindrical reinforcing sleeve, and the upper half and the lower half are fixed together by welding.

[0018] By adopting the above technical solution, the modular design of the reinforcing sleeve facilitates assembly with the swing arm body.

[0019] Optionally, the bushing is a rubber bushing.

[0020] By adopting the above technical solution, the rubber bushing provides a shock absorption effect.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The design of the groove and two uprights significantly strengthens the middle part of the upper plate and improves its bending resistance;

[0023] 2. Most of the upright plate is located in the groove to avoid excessive protrusion from the outer surface of the upper plate and to minimize interference with other structures of the vehicle body;

[0024] 3. One arm of the swing arm body is reinforced by a reinforcement sleeve to improve its strength and prevent deformation. Attached Figure Description

[0025] Figure 1 This is a perspective view of an anti-bending swing arm assembly according to an embodiment;

[0026] Figure 2 This is a top view of an embodiment.

[0027] Explanation of reference numerals in the attached drawings: 1. Swing arm body; 2. Bushing; 3. Ball pin; 11. Upper plate; 12. Lower plate; 13. Groove; 4. Vertical plate; 41. Gap; 42. Mounting hole; 5. Reinforcing sleeve; 51. Upper half sleeve; 52. Lower half sleeve. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] Reference Figure 1 This embodiment discloses a bending-resistant swing arm assembly, including a swing arm body 1. The swing arm body 1 has three ends. Bushings 2 are respectively installed at the first and second ends of the swing arm body 1. The bushings 2 are rubber bushings that provide shock absorption. A ball pin 3 is installed at the third end of the swing arm body 1. The swing arm body 1 includes an upper plate 11 and a lower plate 12, which are fixed by welding. The upper plate 11 and the lower plate 12 are hollowed out.

[0030] Reference Figure 1 and Figure 2 The upper plate 11 is bent downwards in the middle to form a groove 13. Two upright plates 4 are welded and fixed inside the groove 13. Both upright plates 4 are C-shaped with their openings facing each other. The two ends of the upright plates 4 are located on the surface of the upper plate 11 outside the groove 13 and are welded and fixed to the surface of the upper plate 11. Since the groove 13 is not created by hollowing out, this part of the upper plate 11 basically maintains the original strength of the metal material. By setting two upright plates 4, a reinforcement effect is achieved in the middle of the upper plate 11. The upright plates 4 are difficult to bend in the extension direction, providing a strong reinforcement effect in this direction and preventing the upper plate 11 from bending in this part.

[0031] The C-shaped upright plate 4 facilitates placement on the surface of the upper plate 11 for positioning and welding, prevents the upright plate 4 from tilting, and also improves the strength after welding.

[0032] A gap 41 is left between the ends of the two upright plates 4 to avoid stress concentration after welding. Mounting holes 42 are provided on the upright plates 4, through which any accessories can be installed or pipelines can be run, improving the functionality of the upright plates 4. Specifically, there are two mounting holes 42 on the upright plates 4, and the two mounting holes 42 have different diameters. The different diameter mounting holes 42 facilitate differentiation by personnel, preventing incorrect installation of accessories or pipelines.

[0033] Reference Figure 1A reinforcing sleeve 5, made of metal, is fixedly fitted onto the outer sleeve of the swing arm body 1. The reinforcing sleeve 5 is located between the vertical plate 4 and the bushing 2. Specifically, the reinforcing sleeve 5 comprises an upper half 51 and a lower half 52, which together form a cylindrical reinforcing sleeve 5. The upper half 51 and lower half 52 are fixed together by welding. This modular design facilitates assembly with the swing arm body 1. After welding, the reinforcing sleeve 5 is completely fixed to the swing arm body 1. The reinforcing sleeve 5 effectively increases the thickness of the corresponding position on the swing arm body 1, providing targeted reinforcement at that location and preventing deformation.

[0034] The implementation principle of a bending-resistant swing arm assembly according to an embodiment of this application is as follows: The design of the groove 13 and two upright plates 4 significantly strengthens the middle section of the upper plate 11, improving its bending resistance. Most of the upright plates 4 are located within the groove 13, avoiding excessive protrusion from the outer surface of the upper plate 11 and minimizing interference with other vehicle structures. The mounting holes 42 on the upright plates 4 facilitate the installation of accessories. Furthermore, a reinforcing sleeve 5 specifically strengthens one arm of the swing arm body 1, increasing its strength and preventing deformation.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bending-resistant swing arm assembly, comprising a swing arm body (1), the swing arm body (1) having three ends, bushings (2) respectively mounted on the first and second ends of the swing arm body (1), and a ball joint (3) mounted on the third end of the swing arm body (1), characterized in that: The swing arm body (1) includes an upper plate (11) and a lower plate (12). The upper plate (11) and the lower plate (12) are fixed by welding. The upper plate (11) and the lower plate (12) are hollow. The middle part of the upper plate (11) is bent downward to form a groove (13). Two upright plates (4) are welded and fixed in the groove (13). The two upright plates (4) are C-shaped and the openings of the C-shapes face each other. The two ends of the upright plates (4) are located on the surface of the upper plate (11) outside the groove (13). The two ends of the upright plates (4) are welded and fixed to the surface of the upper plate (11).

2. The bending-resistant swing arm assembly according to claim 1, characterized in that: A gap (41) is left between the ends of the two upright plates (4).

3. The anti-bending swing arm assembly according to claim 1, characterized in that: The upright plate (4) is provided with mounting holes (42).

4. The bending-resistant swing arm assembly according to claim 2, characterized in that: The number of mounting holes (42) on the upright plate (4) is two, and the diameters of the two mounting holes (42) are different.

5. The bending-resistant swing arm assembly according to claim 1, characterized in that: The swing arm body (1) is fitted with a reinforcing sleeve (5), which is made of metal and is located between the upright plate (4) and the bushing (2).

6. The bending-resistant swing arm assembly according to claim 5, characterized in that: The reinforcing sleeve (5) includes an upper half sleeve (51) and a lower half sleeve (52), which are combined to form a cylindrical reinforcing sleeve (5). The upper half sleeve (51) and the lower half sleeve (52) are fixed together by welding.

7. The anti-bending swing arm assembly according to claim 1, characterized in that: The bushing (2) is a rubber bushing.

Images