Multi-functional detachable multi-branch suspension control arm

Abstract

The utility model discloses a multi -functional detachable multi -support arm suspension control arm, including arm body and respectively setting in arm body each end's ball head assembly, two bushing assembly and one connecting two bushing support of bushing assembly. The bushing support includes a U-shaped groove like support body, and the both sides wall on support body is correspondingly provided with two pairs of bushing connecting plate that extend upwards, and is provided with a bushing assembly between every pair of bushing connecting plate, the bottom of support body extends downward and is provided with at least a pair of connecting bolt for external connection, bushing assembly is detachably connected with bushing connecting plate through locking mechanism, and locking mechanism includes the fastening bolt and nut of through inner tube, and is compressed bushing connecting plate and bushing assembly through the screwing of nut. The structure is flexible in installation and use, and the angle is adjustable, and the connection is reliable.

Description

Technical Field

[0001] This utility model relates to automotive parts, and more particularly to a multifunctional detachable multi-arm suspension control arm. Background Technology

[0002] Traditional suspension control arms are key components of automotive suspension systems, typically connected to the wheel and body (or subframe) at both ends via ball joint assemblies and bushing assemblies, respectively. Currently, most control arms have a single function, with their bushing assemblies directly press-fitted into mounting holes at the control arm ends via interference fit. This structure has the following limitations: First, the functionality is limited and the integration is low. With the advancement of chassis technology, the number of components that need to be installed around the chassis (such as stabilizer bar links, various sensors, etc.) is increasing. Since traditional control arms do not have pre-reserved mounting points, these components often require additional special brackets to be designed and fixed to the subframe or body, resulting in an increase in the number of parts, a complex chassis layout, and hindering the lightweighting and modular design of the entire vehicle.

[0003] Secondly, the connection angle is fixed, lacking adjustment flexibility. Once the bushing assembly is pressed into the control arm, its connection angle with the vehicle body is fixed. This imposes constraints on the chassis hardpoint design, making it impossible to make fine adjustments according to actual needs during assembly or after-sales maintenance, thus lacking adaptability.

[0004] Finally, there are reliability risks. In certain high-performance or heavy-duty applications, traditional press-fit connections may experience fretting wear due to large alternating loads, causing the bushing to become loose in the control arm mounting hole, resulting in abnormal noise and affecting operational stability. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned problems and provide a multi-functional detachable multi-arm suspension control arm that is flexible in use, adjustable in angle, and reliable in connection.

[0006] The technical solution of this utility model is: The multifunctional detachable multi-arm suspension control arm of this utility model includes an arm body and ball joint assemblies and two bushing assemblies respectively disposed at each end of the arm body. Each bushing assembly includes an inner tube, a rubber body, and an outer tube. Its characteristic is that: It also includes a bushing bracket connecting the two bushing assemblies. The bushing bracket includes a U-shaped support body. Two pairs of upwardly extending bushing connecting plates are correspondingly provided on the two side walls of the support body. A bushing assembly is provided between each pair of bushing connecting plates. The bottom of the bracket body extends downward and is provided with at least one pair of connecting bolts for external connection; The bushing assembly is detachably connected to the bushing connecting plate via a locking mechanism, the locking mechanism including a fastening bolt and a nut passing through the inner tube, the bushing connecting plate and the bushing assembly being pressed together by tightening the nut.

[0007] In the above structure, the introduction of bushing brackets can increase external connections; and the bushing assembly end and the bushing bracket are connected by a detachable locking mechanism. Before locking, the bushing bracket can be infinitely adjusted around the axis of the bushing assembly. The final connection angle between the control arm and the body can be flexibly set according to the chassis hardpoint layout or performance tuning requirements, which improves the adaptability of the design and the fault tolerance of the assembly.

[0008] Furthermore, in the multi-functional detachable multi-arm suspension control arm described in this utility model, the locking mechanism further includes an expansion sleeve fitted between the fastening bolt and the inner tube. By tightening the nut, the expansion sleeve can be driven to expand radially and tighten against the inner wall of the inner tube, while simultaneously pressing the bushing connecting plate axially. This optimization greatly improves the reliability of locking, and through the combined action of radial expansion and axial pressing, effectively avoids loosening that may be caused by vehicle vibration.

[0009] Furthermore, in the multi-functional detachable multi-arm suspension control arm described in this utility model, the expansion sleeve includes a cylindrical expansion section and tapered guide sections connected to its two ends. Multiple axially extending slits are formed on the cylindrical wall of the expansion section. This structure is key to achieving efficient and uniform radial expansion, ensuring sufficient and stable friction between the expansion sleeve and the inner tube.

[0010] Furthermore, in the multi-functional detachable multi-arm suspension control arm described in this utility model, the locking mechanism further includes two conical washers respectively disposed on the outer side of a pair of bushing connecting plates. The conical washers have an inner conical surface that mates with the conical guide section. The function of the conical washers is to efficiently convert the axial tensile force of the bolt into a radial component that pushes the expansion sleeve to expand.

[0011] Furthermore, in the multifunctional detachable multi-arm suspension control arm described in this utility model, the connecting bolts at the bottom of the bracket body are located between each pair of bushing connecting plates.

[0012] Furthermore, in the multi-functional detachable multi-arm suspension control arm described in this utility model, the head of the connecting bolt is housed in the U-shaped groove of the bracket body and welded to its base plate, with its threaded portion penetrating downwards through the base plate of the bracket body; a reinforcing washer is welded to the base plate of the bracket body at the penetration position of the connecting bolt. The connecting bolt is positioned at the optimal stress location between each pair of bushing connecting plates, and the structure of built-in welding and reinforcing washer significantly improves the local connection strength, ensuring long-term reliability of the connection with the vehicle body.

[0013] The beneficial effects of this utility model are: 1. This utility model provides multiple robust connection points through an integrated bushing bracket, which facilitates the direct installation of other body components, such as stabilizer bars and sensor brackets, simplifying the chassis structure, reducing the number of parts, and achieving lightweight and modular design; moreover, the angle between the bushing assembly end and the bushing bracket is adjustable, which makes it easy to flexibly set the installation angle according to design requirements, enhancing adaptability and assembly convenience.

[0014] 2. This utility model innovatively adopts an expansion sleeve locking mechanism, which ensures a stable connection and high reliability. By tightening the nut, the conical washer interacts with the conical guide section of the expansion sleeve, converting the axial tension of the bolt into the radial expansion force of the middle section of the expansion sleeve. This creates a huge interference fit and friction force between the expansion sleeve and the inner tube of the bushing. Combined with the axial pressing of the bracket connecting plate, a double locking effect is achieved, which greatly improves the rigidity and anti-loosening ability of the connection, making it more stable and reliable under high load and vibration conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0017] Figure 3 This is a schematic diagram of the expansion sleeve. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings: Reference Figure 1 , Figure 2 As shown, the multi-functional detachable multi-arm suspension control arm described in this embodiment includes an arm body 1, ball joint assemblies 2, two bushing assemblies 3, and a bushing bracket 4 connecting the two bushing assemblies 3, respectively disposed at each end of the arm body 1. The bushing bracket 4 includes a U-shaped support body 41, and two pairs of upwardly extending bushing connecting plates 42 are correspondingly disposed on the two side walls of the support body 41. A bushing assembly 3 is disposed between each pair of bushing connecting plates 42. The bushing assembly 3 includes an inner tube 31, a rubber body, and an outer tube.

[0019] The bushing assembly 3 is detachably connected to the bushing connecting plate 42 via a locking mechanism. During assembly, the bushing assembly 3 is first placed between a pair of bushing connecting plates 42, and then the locking mechanism is inserted.

[0020] As a basic implementation method, the locking mechanism can be directly composed of fastening bolts 7 and nuts 8. By tightening nuts 8, the bushing connecting plate 42 and the end face of bushing assembly 3 are directly pressed together to achieve fixation.

[0021] In a preferred embodiment, the locking mechanism further includes an expansion sleeve 5 fitted between the fastening bolt 7 and the inner tube 31, and two conical washers 6 respectively disposed on the outer sides of a pair of bushing connecting plates 42. (Refer to...) Figure 2 and Figure 3 The expansion sleeve 5 includes a cylindrical expansion section 51 and tapered guide sections 52 connected to its two ends. Multiple axially extending slits 511 are formed on the cylindrical wall of the expansion section 51. The tapered washer 6 has an inner tapered surface that mates with the tapered guide section 52. By tightening the nut 8, the expansion sleeve 5 can be driven to expand radially and tighten against the inner wall of the inner tube 31, while simultaneously axially pressing against the bushing connecting plate 42.

[0022] During assembly, first, the expansion sleeve 5 is inserted into the inner tube 31 of the bushing. Then, two conical washers 6 are placed on the outside of the bushing connecting plate 42, respectively. The fastening bolt 7 passes through one conical washer 6, one conical guide section 52 and the expansion section 51 of the expansion sleeve 5, the other conical guide section 52, and the other conical washer 6 in sequence. Finally, the nut 8 is tightened. When the nut 8 is tightened, the two conical washers 6 are pulled closer to each other, and their inner conical surfaces slide relative to the conical guide sections 52 at both ends of the expansion sleeve 5. This sliding is decomposed into a force that axially compresses the expansion sleeve 5 and a force that radially expands the expansion section 51 in the middle. The radial expansion force widens the slot 511, and the outer wall of the expansion sleeve 5 fits tightly against the inner wall of the inner tube 31, generating a huge static friction force to achieve a "tensioned connection." The axial compression force firmly clamps the bushing connecting plates 42 on both sides through the conical washers 6. This process completes radial expansion and axial compression in one step, resulting in an extremely stable connection.

[0023] At least one pair of connecting bolts 43 for external connection are provided at the bottom of the support body 41; the connecting bolts 43 at the bottom of the support body 41 are preferably located between each pair of bushing connecting plates 42. The head of the connecting bolt 43 is received in the U-shaped groove of the support body 41 and welded to its bottom plate, and its threaded portion penetrates downward through the bottom plate of the support body 41; a reinforcing washer 44 is welded to the bottom plate of the support body 41 at the penetration position of the connecting bolt 43 to enhance the strength and durability of the weld point.

[0024] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model are still covered by the claims of this utility model.

Claims

1. A multi-functional detachable multi-arm suspension control arm, comprising an arm body and ball joint assemblies and two bushing assemblies respectively disposed at each end of the arm body, wherein the bushing assembly comprises an inner tube, a rubber body, and an outer tube, characterized in that: It also includes a bushing bracket connecting the two bushing assemblies. The bushing bracket includes a U-shaped support body. Two pairs of upwardly extending bushing connecting plates are correspondingly provided on the two side walls of the support body. A bushing assembly is provided between each pair of bushing connecting plates. The bottom of the bracket body extends downward and is provided with at least one pair of connecting bolts for external connection; The bushing assembly is detachably connected to the bushing connecting plate via a locking mechanism, the locking mechanism including a fastening bolt and a nut passing through the inner tube, the bushing connecting plate and the bushing assembly being pressed together by tightening the nut.

2. The multi-functional detachable multi-arm suspension control arm according to claim 1, characterized in that: The locking mechanism also includes an expansion sleeve fitted between the fastening bolt and the inner tube. By locking the nut, the expansion sleeve can be driven to expand radially and tighten and fix with the inner wall of the inner tube, while simultaneously pressing the bushing connecting plate axially.

3. The multi-functional detachable multi-arm suspension control arm according to claim 2, characterized in that: The expansion sleeve includes a cylindrical expansion section and tapered guide sections connected to its two ends. The expansion section has multiple axially extending slits on its cylindrical wall.

4. The multi-functional detachable multi-arm suspension control arm according to claim 3, characterized in that: The locking mechanism further includes two conical washers respectively disposed on the outer side of the pair of bushing connecting plates, the conical washers having an inner conical surface that mates with the conical guide section.

5. The multi-functional detachable multi-arm suspension control arm according to claim 1, characterized in that: The connecting bolts at the bottom of the support body are located between each pair of bushing connecting plates.

6. The multi-functional detachable multi-arm suspension control arm according to claim 1 or 5, characterized in that: The head of the connecting bolt is housed in the U-shaped groove of the bracket body and welded to its base plate, and its threaded part penetrates downward through the base plate of the bracket body; a reinforcing washer is welded to the base plate of the bracket body at the penetration position of the connecting bolt.

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