Suspension arm assembly

Abstract

This utility model provides a suspension arm assembly, belonging to the field of automotive parts technology. It solves the problem of insufficient structural stability in existing suspension arm assemblies when reducing weight. This suspension arm assembly includes an arm body, a ball joint assembly, and a bushing assembly. The arm body includes a V-shaped main body, end rings at both ends of the main body, and a central cylinder in the middle of the main body. The end rings are fixedly connected to the bushing assembly, and the central cylinder is fixedly connected to the ball joint assembly. The main body is flat and strip-shaped. Both the front and back of the main body have quadrilateral, closed-sided weight-reduction grooves. The length of the weight-reduction grooves is along the length direction of the main body. The weight-reduction grooves on the front and back of the main body have the same shape and corresponding positions. Both the front and back of the main body have two weight-reduction grooves located on either side of the central cylinder. One end of the weight-reduction groove is spaced apart from the central cylinder, and the other end of the weight-reduction groove is spaced apart from the corresponding end ring. This suspension arm assembly can reduce weight while maintaining structural stability.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology and relates to a suspension arm assembly. Background Technology

[0002] The suspension is a general term for the force transmission connection device between the wheels and the body of a car. Its function is to transmit the force and torque between the wheels and the body, and to buffer the impact force transmitted to the body from uneven road surfaces, thereby reducing the vibration caused by it, so as to ensure that the car can drive smoothly. The suspension includes elastic elements, shock absorbers, and force transmission devices, which respectively play the roles of buffering, damping, and force transmission.

[0003] Elastic elements support vertical loads and mitigate vibrations and impacts caused by uneven road surfaces. These elements primarily include leaf springs, coil springs, torsion bar springs, air springs, and rubber springs. Shock absorbers are used to suppress oscillations caused by the rebound of springs after absorbing shocks and to absorb impacts from the road surface. They are widely used in automobiles to accelerate the attenuation of vibrations in the chassis and body, thereby improving ride comfort. Force transmission devices include suspension arms, which connect the wheels to the vehicle body and serve both guiding and force transmission functions.

[0004] For example, a suspension arm assembly disclosed in Chinese patent literature [Application No.: CN 202322154498.4, Publication No.: CN220594569U] includes an arm body, with a ball joint assembly connected to the upper end of the arm body, and rubber bushing assemblies connected to both ends of the arm body. The arm body is formed from medium carbon steel through integral forging, resulting in a relatively large weight. However, lightweight design is a development trend in automobiles for energy conservation and emission reduction. To reduce weight, engineers designed an arm body with a sheet metal welded structure; however, this sacrifices the structural strength of the arm body, leading to problems such as deformation of the suspension arm assembly during use. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a suspension arm assembly that solves the technical problem of how to reduce the weight of the suspension arm assembly while ensuring structural stability.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A suspension arm assembly includes an arm body, a ball joint assembly, and a bushing assembly. The arm body includes a V-shaped main body, end rings at both ends of the main body, and an intermediate cylinder in the middle of the main body. The end rings are fixedly connected to the bushing assembly, and the intermediate cylinder is fixedly connected to the ball joint assembly. The main body is flat and strip-shaped. Both the front and back sides of the main body have quadrilateral, closed-sided weight-reducing grooves. The length of the weight-reducing grooves is along the length direction of the main body. The weight-reducing grooves on the front and back sides of the main body have the same shape and corresponding positions. Both the front and back sides of the main body have two weight-reducing grooves located on either side of the intermediate cylinder. One end of each weight-reducing groove is spaced apart from the intermediate cylinder, and the other end of each weight-reducing groove is spaced apart from the corresponding end ring.

[0008] The weight-reducing grooves reduce the weight of the boom. The main body is flat and strip-shaped, and the weight-reducing grooves are quadrilaterals with closed sides. The weight-reducing grooves on the front and back of the main body are identical in shape and corresponding in position, creating an H-beam-like structure at the weight-reducing grooves, thus ensuring structural strength at these locations. Weight-reducing grooves are also provided on both sides of the main body near the intermediate cylinder, further reducing the boom's weight. One end of the weight-reducing groove is spaced apart from the intermediate cylinder, ensuring that the boom thickness between the groove and the intermediate cylinder is greater than the boom thickness at the groove itself. The other end of the weight-reducing groove is spaced apart from the corresponding end ring, ensuring that the boom thickness between the groove and the end ring is also greater than the boom thickness at the groove itself. This maintains structural strength between the weight-reducing groove and the intermediate cylinder, and between the groove and the end ring. Therefore, this suspension boom assembly can reduce its weight while maintaining structural stability.

[0009] In the aforementioned suspension arm assembly, the bottom surface of the weight-reducing groove is flat, and the side surface of the weight-reducing groove transitions to the bottom surface with rounded corners. This reduces stress concentration caused by the weight-reducing groove design, thus helping to ensure the structural stability of the arm.

[0010] In the aforementioned suspension arm assembly, the front of the main body and the side of the corresponding weight-reducing groove, as well as the front and side of the main body, all feature rounded corner transitions; similarly, the back of the main body and the side of the corresponding weight-reducing groove, as well as the back and side of the main body, also feature rounded corner transitions. This significantly reduces stress concentration at the corners of the main structure, contributing to the stability of the arm structure; furthermore, it reduces weight at the corners of the main structure, thus lowering the overall weight of the arm.

[0011] In the aforementioned suspension arm assembly, the width of the main body gradually decreases along the direction from the intermediate cylinder to the end ring. This further reduces the weight of the arm body.

[0012] In the aforementioned suspension arm assembly, the front surface of the main body and the outer peripheral surface of the end ring form a rounded transition, as do the back surface of the main body and the outer peripheral surface of the end ring. This ensures structural strength and stability between the main body and the end ring even with a reduced width at the connection point.

[0013] In the aforementioned suspension arm assembly, both ends of the main body are bent inwards and connected to end rings. This increases the structural strength at the bent ends of the main body, which helps to stabilize the arm structure.

[0014] In the aforementioned suspension arm assembly, the main body is symmetrically arranged about the intermediate cylinder. This ensures even force distribution on the arm body, contributing to the structural stability of the suspension arm assembly.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] Weight-reducing grooves are provided on both the front and back of the main body, and also on both sides of the intermediate cylinder, which reduces the weight of the arm. The main body is a flat strip, and the weight-reducing grooves are four-sided closed quadrilaterals. The weight-reducing grooves on the front and back of the main body are the same shape and corresponding in position, forming an I-beam-like structure at the weight-reducing grooves, thus ensuring the structural strength at these locations. One end of the weight-reducing groove is spaced apart from the intermediate cylinder, and the other end is spaced apart from the corresponding end ring, ensuring structural strength at the positions between the weight-reducing groove and the intermediate cylinder, and between the weight-reducing groove and the end ring. Therefore, this suspension arm assembly can reduce its weight while maintaining structural stability. Attached Figure Description

[0017] Figure 1 This is a front view of the suspension arm assembly.

[0018] Figure 2 This is a front view of the boom body in this suspension boom assembly.

[0019] Figure 3 yes Figure 2 A cross-sectional view along the AA direction.

[0020] Figure 4 yes Figure 2 A cross-sectional view along the BB direction.

[0021] Figure 5 This is a right view of the boom body in this suspension boom assembly.

[0022] In the figure, 1 is the arm body; 1a is the main body; 1a1 is the weight reduction groove; 1b is the end ring; 1c is the intermediate cylinder; 2 is the ball head assembly; and 3 is the bushing assembly. Detailed Implementation

[0023] 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.

[0024] like Figure 1 As shown, a suspension arm assembly includes an arm body 1, a ball joint assembly 2, and a bushing assembly 3. There are two bushing assemblies 3, each fixedly connected to one end of the arm body 1. The ball joint assembly 2 is fixedly connected to the middle of the arm body 1. The structures of the ball joint assembly 2 and the bushing assembly 3 can be found in patent document CN220594569U.

[0025] like Figure 1 and Figure 2 As shown, the arm body 1 includes a V-shaped main body 1a, end rings 1b at both ends of the main body 1a, and an intermediate cylinder 1c in the middle of the main body 1a. A bushing assembly 3 is inserted into and fixedly connected to the end rings 1b, and a ball head assembly 2 is inserted into and fixedly connected to the intermediate cylinder 1c. The two ends of the main body 1a are bent inwards and connected to the end rings 1b. The main body 1a is symmetrically arranged about the intermediate cylinder 1c. The main body 1a is a flat strip shape, combined with... Figure 3 and Figure 4 As shown, the main body 1a has quadrilateral, closed-sided weight-reducing grooves 1a1 on both its front and back sides. The length of the weight-reducing grooves 1a1 is along the length direction of the main body 1a, and the weight-reducing grooves 1a1 on the front and back sides of the main body 1a are identical in shape and corresponding in position. The main body 1a also has two weight-reducing grooves 1a1 on each side of the intermediate cylinder 1c, with one end of each groove spaced apart from the intermediate cylinder 1c, and the other end spaced apart from the corresponding end ring 1b. The bottom surface of the weight-reducing groove 1a1 is flat, and the sides of the weight-reducing groove 1a1 are rounded to the bottom surface. The front of the main body 1a also has rounded corners with the sides of the corresponding weight-reducing grooves 1a1, as well as with the sides of the main body 1a itself; similarly, the back of the main body 1a also has rounded corners with the sides of the corresponding weight-reducing grooves 1a1, as well as with the sides of the main body 1a itself. The width of the main body 1a gradually decreases along the direction from the intermediate cylinder 1c to the end ring 1b, and the weight-reducing groove 1a1 is trapezoidal or approximately trapezoidal. For example... Figure 5 As shown, the front of the main body 1a and the outer peripheral surface of the end ring 1b are connected by an arc, and the back of the main body 1a and the outer peripheral surface of the end ring 1b are connected by an arc.

[0026] The weight-reducing groove 1a1 reduces the weight of the arm body 1. The main body 1a is flat and strip-shaped, and the weight-reducing groove 1a1 is a quadrilateral with closed sides. The weight-reducing grooves 1a1 on the front and back of the main body 1a are identical in shape and corresponding in position. Figure 3 and Figure 4As shown, the main body 1a forms an I-beam-like structure at the weight-reducing groove 1a1, thereby ensuring the structural strength of the main body 1a at the weight-reducing groove 1a1. Weight-reducing grooves 1a1 are provided on both sides of the main body 1a located on the intermediate cylinder 1c, which further reduces the weight of the arm 1. One end of the weight-reducing groove 1a1 is spaced apart from the intermediate cylinder 1c, such that the thickness of the main body 1a arm between the weight-reducing groove 1a1 and the intermediate cylinder 1c is greater than the thickness of the main body 1a arm at the weight-reducing groove 1a1. The other end of the weight-reducing groove 1a1 is spaced apart from the corresponding end ring 1b, such that the thickness of the main body 1a arm between the weight-reducing groove 1a1 and the end ring 1b is greater than the thickness of the main body 1a arm at the weight-reducing groove 1a1, thus ensuring the structural strength at the positions between the weight-reducing groove 1a1 and the intermediate cylinder 1c, and between the weight-reducing groove 1a1 and the end ring 1b. Therefore, this suspension arm assembly can reduce the weight of the suspension arm assembly while ensuring structural stability.

[0027] 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.

Claims

1. A suspension arm assembly, comprising an arm body (1), a ball joint assembly (2), and a bushing assembly (3), wherein the arm body (1) comprises a V-shaped main body (1a), end rings (1b) located at both ends of the main body (1a), and an intermediate cylinder (1c) located in the middle of the main body (1a), wherein the end rings (1b) are fixedly connected to the bushing assembly (3), and the intermediate cylinder (1c) is fixedly connected to the ball joint assembly (2), characterized in that, The main body (1a) is flat and strip-shaped. Both the front and back sides of the main body (1a) have a quadrilateral weight-reducing groove (1a1) that is closed on all four sides. The length of the weight-reducing groove (1a1) is set along the length direction of the main body (1a). The weight-reducing grooves (1a1) on the front and back sides of the main body (1a) are the same in shape and corresponding in position. Both the front and back sides of the main body (1a) have two weight-reducing grooves (1a1) located on both sides of the intermediate cylinder (1c). One end of the weight-reducing groove (1a1) is spaced apart from the intermediate cylinder (1c), and the other end of the weight-reducing groove (1a1) is spaced apart from the corresponding end ring (1b).

2. The suspension arm assembly according to claim 1, characterized in that, The bottom surface of the weight reduction groove (1a1) is a plane, and the side surface of the weight reduction groove (1a1) and the bottom surface of the weight reduction groove (1a1) are rounded.

3. The suspension arm assembly according to claim 2, characterized in that, The front of the main body (1a) and the side of the corresponding weight-reducing groove (1a1), as well as the front of the main body (1a) and the side of the main body (1a), are all rounded corner transitions; the back of the main body (1a) and the side of the corresponding weight-reducing groove (1a1), as well as the back of the main body (1a) and the side of the main body (1a), are also rounded corner transitions.

4. The suspension arm assembly according to any one of claims 1-3, characterized in that, The width of the main body (1a) gradually decreases along the direction from the intermediate cylinder (1c) to the end ring (1b).

5. The suspension arm assembly according to claim 4, characterized in that, The front side of the main body (1a) and the outer peripheral surface of the end ring (1b) are connected by an arc, and the back side of the main body (1a) and the outer peripheral surface of the end ring (1b) are connected by an arc.

6. The suspension arm assembly according to claim 5, characterized in that, The two ends of the main body (1a) are bent inward and connected to the end ring (1b).

7. The suspension arm assembly according to any one of claims 1-3, characterized in that, The main body (1a) is symmetrically arranged about the intermediate cylinder (1c).

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