Lightweight anti-loose noise reduction swing arm assembly

Abstract

The utility model provides a lightweight anti -looseness noise reduction swing arm assembly belongs to the technical field of automobile parts, it has solved the problem that swing arm weight is bigger in prior art. The utility model discloses swing arm main part, pin shaft subassembly, first pressure equipment subassembly and second pressure equipment subassembly, be provided with the lightening groove in swing arm main part, the lightening groove extends to the head part of swing arm main part from the force direction of swing arm main part near the tail part of swing arm main part, and the swing arm main part of lightening groove periphery forms and has extended enclosure structure, a plurality of lightening through -hole are seted up in the lightening groove, the pin shaft base is connected with swing arm main part head, the inside of pin shaft base is provided with the mounting seat, the one side of ball head pin is connected with the mounting seat, the tail part of first rubber bushing and swing arm main part is connected with the sleeve, and first metal pressure equipment component is connected with the sleeve in first rubber bushing outside. The utility model has the advantages of lighter weight but the structural strength is bigger, the shock attenuation and the good effect of noise reduction.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology and relates to a lightweight anti-loosening and noise-reducing swing arm assembly. Background Technology

[0002] The control arm assembly is the core load-bearing and force-transmitting component of the automotive suspension system. It connects the wheels and key parts of the vehicle body. Its core function is to transmit longitudinal and lateral forces and torques during driving, buffer the impact of road bumps, and constrain the wheel's movement trajectory to ensure precise steering and driving stability.

[0003] Chinese patent publication number CN205736734U discloses a lower control arm assembly, which includes a first arm body and a second arm body that are separately arranged. The first arm body includes a connecting rod and cylinders symmetrically arranged at both ends of the connecting rod. A first bushing assembly and a second bushing assembly are press-fitted inside the cylinders. A ball head assembly is provided at one end of the second arm body. Both the first arm body and the second arm body are provided with at least one positioning hole to achieve mutual positioning by screws.

[0004] The patent provides a lower control arm assembly that uses a split structure of a first arm body and a second arm body, and does not include a weight-reducing structure, resulting in a relatively heavy overall weight. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a lightweight, anti-loosening, and noise-reducing swing arm assembly.

[0006] The objective of this utility model can be achieved through the following technical solution: A lightweight anti-loosening and noise-reducing swing arm assembly includes a swing arm body, a pin assembly, a first pressing assembly, and a second pressing assembly. The swing arm body has a light-reducing groove that extends from near the tail end of the swing arm body along the force direction to near the head end. An extended enclosing structure is formed around the swing arm body on the outer periphery of the light-reducing groove. Several light-reducing through holes are formed in the light-reducing groove. The pin assembly includes a ball head pin, a pin base, a clamping ring, a sealing plate, and a dust cover. The pin base is connected to the head end of the swing arm body. The pin base has a semi-enclosed structure with one side open and a cavity structure is formed inside the pin base. A mounting seat is provided inside the pin base. One end of the ball head pin is spherical and one side of the ball head pin is connected to the mounting seat. The first pressing assembly includes a first rubber bushing and a first metal pressing component. The first rubber bushing is sleeved and connected to the tail end of the swing arm body, and the first metal pressing component is sleeved and connected to the outside of the first rubber bushing.

[0007] In the aforementioned lightweight anti-loosening and noise-reducing swing arm assembly, a connecting boss extends from the lower end of the swing arm body. The second press-fitting component includes a second rubber bushing and a second metal press-fitting member. The second rubber bushing is sleeved and connected to the outside of the connecting boss, and the second press-fitting member is connected to the outside of the second rubber bushing.

[0008] In the aforementioned lightweight anti-loosening and noise-reducing swing arm assembly, a first damping layer is provided between the first rubber bushing and the tail of the swing arm body, and a second damping layer is provided between the second rubber bushing and the connecting boss of the swing arm body.

[0009] In the aforementioned lightweight anti-loosening and noise-reducing swing arm assembly, the sealing plate is installed at the opening of the pin base, the dust cover is installed at the outer end of the opening of the pin base, and the ball head pin passes through and extends out of the sealing plate and the dust cover.

[0010] In the aforementioned lightweight anti-loosening and noise-reducing swing arm assembly, the clamping ring is fitted around the ball head pin, the outer end of the dust cover forms a limiting platform, and the bottom end of the clamping ring is in contact with the limiting platform.

[0011] Compared with the prior art, the lightweight anti-loosening and noise-reducing swing arm assembly provided by this utility model has the following beneficial effects: 1. By combining the design of a weight-reducing groove extending along the force direction and several weight-reducing through holes, weight reduction is achieved in the non-core force-bearing area of ​​the swing arm body. At the same time, the extended enclosure structure around the weight-reducing groove is formed along the stress transmission path, which not only fills the rigidity loss caused by the hollowing, but also avoids additional weight gain, allowing the swing arm to withstand longitudinal and lateral loads under complex road conditions while being lightweight; 2. The rubber bushing and metal press-fit components in the press-fit assembly adopt an interference fit, plus a damping layer, which not only enhances the tightness of the fit between the components, but also buffers high-frequency vibrations during driving and reduces the loose gaps after long-term use; 3. The first and second damping layers can absorb the vibration energy between the swing arm and the bushing, and the elastic deformation of the rubber bushing itself can also buffer the impact of road bumps and reduce the transmission of vibration noise to the vehicle body. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the pin assembly structure.

[0013] In the figure: 1. Swing arm body; 11. Lightening groove; 12. Extended enclosure structure; 13. Lightening through hole; 14. Connecting boss; 2. Pin assembly; 21. Ball pin; 22. Pin base; 23. Pressing ring; 24. Sealing plate; 25. Dust cover; 251. Limiting platform; 26. Mounting seat; 3. First press-fit assembly; 31. First rubber bushing; 32. First metal press-fit component; 33. First damping layer; 4. Second press-fit assembly; 41. Second rubber bushing; 42. Second metal press-fit component; 43. Second damping layer. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] like Figures 1 to 2 As shown, this embodiment includes a swing arm body 1, a pin assembly 2, a first pressing assembly 3, and a second pressing assembly 4.

[0016] like Figure 1 As shown, the swing arm body 1 is the core load-bearing structure, and a weight-reducing groove 11 is provided inside it. The weight-reducing groove 11 extends from the position near the rear of the swing arm body 1 along the main force direction during the swing arm body 1's travel to the position near the head. This maximizes weight reduction while avoiding affecting the structural load-bearing capacity. An extended enclosing structure 12 is integrally formed around the swing arm body 11, which forms a reinforcing frame around the weight-reducing groove 11, effectively compensating for the rigidity loss caused by the hollow design and preventing stress concentration. Several weight-reducing through holes 13 are also evenly provided inside the weight-reducing groove 11 to further optimize the lightweight effect without compromising the overall structural stability. In addition, a connecting boss 14 is integrally extended from the lower end of the swing arm body 1 to provide a precise installation reference for the second press-fit assembly 4.

[0017] like Figures 1 to 2As shown, the pin assembly 2 includes a ball head pin 21, a pin base 22, a clamping ring 23, a sealing plate 24, and a dust cover 25. The pin base 22 is bolted to the head of the swing arm body 1. The pin base 22 has a semi-enclosed structure with one open side, forming a cavity structure inside to accommodate the ball head pin 21. A mounting seat 26 is fixedly installed within the cavity. One end of the ball head pin 21 is spherical, and this spherical end rotatably engages with the mounting seat 26, ensuring flexibility in steering and force transmission. The sealing plate 24 is fixedly installed at the opening of the pin base 22 to seal the inside of the cavity. The dust cover 25 is fixedly installed at the outer end of the opening of the pin base 22. The end of the ball pin 21 away from the ball passes through and extends out of the sealing plate 24 and the dust cover 25 in sequence to achieve double protection. The clamping ring 23 is sleeved on the outside of the ball pin 21. The outer end of the dust cover 25 is integrally formed with a limiting platform 251. The bottom end of the clamping ring 23 is tightly fitted with the limiting platform 251 to restrict the axial movement of the ball pin 21.

[0018] To elaborate further, such as Figure 1 As shown, the first press-fit assembly 3 includes a first rubber bushing 31 and a first metal press-fit component 32. The first rubber bushing 31 is connected to the tail of the swing arm body 1 by an interference fit. The first metal press-fit component 32 is fitted and fixed to the outside of the first rubber bushing 31. A first damping layer 33 is also provided between the first rubber bushing 31 and the tail of the swing arm body 1 to enhance the tightness of the fit and the shock absorption effect.

[0019] To elaborate further, such as Figure 1 As shown, the second press-fit assembly 4 includes a second rubber bushing 41 and a second metal press-fit component 42. The second rubber bushing 41 is sleeved and connected to the outside of the connecting boss 14 of the swing arm body 1. The second metal press-fit component 42 is interference-fitted with the second rubber bushing 41, and a second damping layer 43 is provided between the second rubber bushing 41 and the connecting boss 14, which works together with the first press-fit assembly 3 to achieve elastic connection and vibration buffering.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A lightweight anti-loosening and noise-reducing swing arm assembly, comprising a swing arm body (1), a pin assembly (2), a first pressing assembly (3), and a second pressing assembly (4), characterized in that: The swing arm body (1) has a light-reducing groove (11) extending from near the tail end of the swing arm body (1) along the force direction to near the head end. An extended enclosure structure (12) is formed on the outer periphery of the swing arm body (1). Several light-reducing through holes (13) are provided in the light-reducing groove (11). The pin assembly (2) includes a ball head pin (21), a pin base (22), a clamping ring (23), a sealing plate (24), and a dust cover (25). The pin base (22) is connected to the head end of the swing arm body (1). The pin base (22) is a semi-enclosed structure with one side open and a cavity structure is formed inside the pin base (22). The pin base (22) is provided with a mounting seat (26) inside. One end of the ball head pin (21) is spherical and one side of the ball head pin (21) is connected to the mounting seat (26). The first press-fit assembly (3) includes a first rubber bushing (31) and a first metal press-fit component (32). The first rubber bushing (31) is sleeved and connected to the tail of the swing arm body (1). The first metal press-fit component (32) is sleeved and connected to the outside of the first rubber bushing (31).

2. The lightweight anti-loosening and noise-reducing swing arm assembly according to claim 1, characterized in that: The lower end of the swing arm body (1) extends to form a connecting boss (14). The second press-fit assembly (4) includes a second rubber bushing (41) and a second metal press-fit component (42). The second rubber bushing (41) is sleeved and connected to the outside of the connecting boss (14), and the second metal press-fit component is connected to the outside of the second rubber bushing (41).

3. The lightweight anti-loosening and noise-reducing swing arm assembly according to claim 2, characterized in that: A first damping layer (33) is provided between the first rubber bushing (31) and the tail of the swing arm body (1), and a second damping layer (43) is provided between the second rubber bushing (41) and the connecting boss (14) of the swing arm body (1).

4. The lightweight anti-loosening and noise-reducing swing arm assembly according to claim 1, characterized in that: The sealing plate (24) is installed at the opening of the pin base (22), the dust cover (25) is installed at the outer end of the opening of the pin base (22), and the ball head pin (21) passes through and extends out of the sealing plate (24) and the dust cover (25).

5. The lightweight anti-loosening and noise-reducing swing arm assembly according to claim 1, characterized in that: The clamping ring (23) is fitted outside the ball head pin (21), and the outer end of the dust cover (25) forms a limiting platform (251). The bottom end of the clamping ring (23) is in contact with the limiting platform (251).

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