Rear overhang traction arm with dynamic vibration absorber

Abstract

The utility model discloses a rear overhang traction arm with a dynamic vibration absorber, which comprises a rear overhang traction arm body (1), a first connecting end (2) is a U-shaped notch, a second connecting end (3) is provided with a rubber bushing (4), and the rubber bushing (4) is fixed on the second connecting end (3) through a bolt and nut assembly. The rear suspension traction arm is characterized in that a dynamic vibration absorber (5) is arranged at any position of the rear suspension traction arm body (1), the installation position of the dynamic vibration absorber (5) and the installation position of the rubber bushing (4) are located on the same plane, and the vibration absorption direction of the dynamic vibration absorber (5) is consistent with the height direction of the rear suspension traction arm body (1). According to the rear suspension traction arm, the dynamic vibration absorber is additionally arranged on the metal plate body, co-vibration energy of the traction arm is transferred to the dynamic vibration absorber, and vibration is absorbed.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a rear suspension traction arm with a power shock absorber. Background Technology

[0002] The rear suspension drawbar is a crucial structural component connecting the vehicle body and the rear wheels. Its core function is to control the longitudinal position of the wheels and serve as the main channel for transmitting driving and braking forces. It is also the pivot point for suspension movement, significantly impacting rear wheel alignment. It is a key component ensuring efficient power transmission, braking stability, and rear wheel traction.

[0003] A conventional rear suspension drawbar is generally composed of a sheet metal body pressed with a rubber bushing. The sheet metal body has bolt holes for connection to the steering knuckle, and the bushing side is connected to the subframe via a drawbar mounting bracket. Disadvantages: The sheet metal body of the rear suspension drawbar has a low modal, which can easily cause resonance during vehicle operation, resulting in noise or even damage to parts. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a rear suspension traction arm with a power vibration absorber added to the sheet metal body, which transfers the resonance energy of the traction arm to the power vibration absorber and absorbs the vibration.

[0005] The technical solution of this utility model is to provide a rear suspension traction arm with a dynamic vibration absorber having the following structure, including a rear suspension traction arm body, the rear suspension traction arm body being composed of a sheet metal body, with a first connecting end and a second connecting end at both ends respectively; the first connecting end is a U-shaped notch, and the second connecting end is provided with a rubber bushing, the rubber bushing being fixed to the second connecting end by a bolt and nut assembly, characterized in that: a dynamic vibration absorber is provided at any position of the rear suspension traction arm body, the dynamic vibration absorber being fixed to the rear suspension traction arm body by a bolt and nut assembly, the installation position of the dynamic vibration absorber and the installation position of the rubber bushing are both located on the same plane, and the direction of vibration absorption by the dynamic vibration absorber is consistent with the height direction of the rear suspension traction arm body.

[0006] The power vibration absorber includes a vibration absorber housing and a vibration absorber block. The vibration absorber housing is provided with a central tube and an annular tube. The outer wall of the central tube is connected to the inner wall of the annular tube by several connecting strips. The vibration absorber block is tightly fitted inside the annular tube. The vibration absorber housing and the vibration absorber block are coaxial and parallel to the axis of the rubber bushing.

[0007] The two ends of the central tube extend out to their respective ends. A bushing is provided inside the central tube. The bolt of the bolt and nut passes through one end of the bushing and through the rear suspension traction arm body, and is then locked with the nut. The end face of the bushing abuts against the bottom surface of the rear suspension traction arm body.

[0008] One end of the power shock absorber is fixed to the rear suspension arm body, and the other end is far away from the rear suspension arm body and is in a suspended state.

[0009] The rear suspension traction arm body has a recess in the middle, and one end of the power shock absorber is fixed in a position in the recess and close to the rubber bushing.

[0010] There is a gap between the shock absorber housing and the bottom surface of the rear suspension traction arm body.

[0011] The outer wall of the central tube and the inner wall of the annular tube are connected by several connecting strips, with a cavity between adjacent connecting strips.

[0012] With the above structure, this utility model has the following advantages: 1. It solves the resonance problem of the rear suspension drawbar. A dynamic vibration absorber is added to the sheet metal body and fixed with bolts, which plays a role in vibration absorption and noise reduction. That is, when the sheet metal body resonates under external excitation, without a dynamic vibration absorber, the noise and vibration generated will be transmitted to the vehicle body, causing a bad experience for passengers. The dynamic vibration absorber can convert the vibration generated by resonance into the vibration of the mass block, which is attenuated by the heat generated by the movement of rubber, thereby absorbing the vibration and ensuring the comfort of passengers. 2. The rear suspension drawbar adopts a structure of sheet metal body pressed with rubber bushing, which is compact, simple, and lightweight. The dynamic vibration absorber solves the problem of absorbing vibration at the resonance frequency. 3. The dynamic vibration absorber is connected by bolts, which has good interchangeability and is convenient for maintenance. 4. The parts have a simple structure, simple manufacturing process, low cost, high structural strength, and solve the resonance problem of the parts. 5. It absorbs vibration, suppresses the peak resonance of the suspension, and reduces the noise inside the vehicle by 3-5dB. Attached Figure Description

[0013] Figure 1 This is a frontal view schematic diagram of the rear suspension traction arm with a powered vibration absorber according to this utility model.

[0014] Figure 2 This is a bottom view diagram of the rear suspension traction arm with a powered vibration absorber according to this utility model.

[0015] Figure 3 This is a schematic diagram of the rear suspension traction arm with a powered vibration absorber according to this utility model.

[0016] Figure 4 This is an exploded view of the rear suspension traction arm with a powered vibration absorber according to this utility model.

[0017] Figure 5 This is a frontal view of the dynamic vibration absorber of this utility model.

[0018] Figure 6 This is a schematic diagram of the bottom surface of the dynamic vibration absorber of this utility model.

[0019] Figure 7 This is a frontal view of the split-section diagram of the dynamic vibration absorber of this utility model.

[0020] Figure 8 This is a split schematic diagram of the bottom surface of the dynamic vibration absorber of this utility model.

[0021] As shown in the figure:

[0022] 1. Rear suspension traction arm body; 2. First connecting end; 3. Second connecting end; 4. Rubber bushing; 5. Power shock absorber; 6. Shock absorber housing; 7. Shock absorber block; 8. Central tube; 9. Annular tube; 10. Bushing. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-8 As shown, this utility model discloses a rear suspension traction arm with a dynamic vibration absorber, comprising a rear suspension traction arm body 1, which is composed of a sheet metal body with a first connecting end 2 and a second connecting end 3 at its two ends respectively; the first connecting end 2 is a U-shaped notch, and the second connecting end 3 is provided with a rubber bushing 4, which is fixed to the second connecting end 3 by a bolt and nut assembly. The feature is that a dynamic vibration absorber 5 is provided at any position of the rear suspension traction arm body 1, and the dynamic vibration absorber 5 is fixed to the rear suspension traction arm body 1 by a bolt and nut assembly. The installation position of the dynamic vibration absorber 5 and the installation position of the rubber bushing 4 are both located on the same plane, and the direction in which the dynamic vibration absorber 5 absorbs vibration is consistent with the height direction of the rear suspension traction arm body 1.

[0025] like Figure 5-8 As shown, the dynamic vibration absorber 5 includes a vibration absorber housing 6 and a vibration absorber block 7. The vibration absorber housing 6 is provided with a central tube 8 and an annular tube 9. The outer wall of the central tube 8 is connected to the inner wall of the annular tube 9 by several connecting strips. The vibration absorber block 7 is tightly fitted inside the annular tube 9. The vibration absorber housing 6 and the vibration absorber block 7 are coaxial and parallel to the axis of the rubber bushing 4.

[0026] like Figure 2 As shown, the two ends of the central tube 8 extend out to their respective ends. A bushing 10 is provided inside the central tube 8. The bolt of the bolt and nut passes through one end of the bushing 10 and through the rear suspension traction arm body 1 before being locked with the nut. The end face of the bushing 10 abuts against the bottom surface of the rear suspension traction arm body 1.

[0027] One end of the dynamic shock absorber 5 is fixed to the rear suspension traction arm body 1, and the other end is far away from the rear suspension traction arm body 1 and is in a suspended state.

[0028] The rear suspension traction arm body 1 has a recess in the middle part, and one end of the power shock absorber 5 is fixed in a position in the recess and close to the rubber bushing 4.

[0029] There is a gap between the shock absorber housing 6 and the bottom surface of the rear suspension traction arm body 1, and the bottom surface of the rear suspension traction arm body 1 is only abutted by the end face of the bushing 10.

[0030] The outer wall of the central tube 8 and the inner wall of the annular tube 9 are connected by several connecting strips. The space between adjacent connecting strips is a cavity, and all the cavities form an arc-shaped hole of circular length.

[0031] This utility model relates to a rear suspension traction arm with a dynamic vibration absorber. After adding the dynamic vibration absorber...

[0032] 1. Reduced component weight (the rear suspension drawbar adopts a sheet metal body press-fit and rubber bushing structure, which is compact, simple and lightweight, thereby reducing fuel consumption and carbon dioxide emissions).

[0033] 2. Reduced costs (the parts have a simple structure, consisting of a single stamped part and a rubber bushing, making the manufacturing process simple and the cost low).

[0034] 3. Corrosion resistance (sheet metal electrophoresis, inner and outer tubes of the bushing are made of aluminum, which has good corrosion resistance and requires no surface treatment)

[0035] 4. Good interchangeability (the dynamic vibration absorber is connected by bolts, making maintenance convenient).

[0036] 5. Excellent NVH performance (vibration at resonant frequencies is absorbed by a dynamic vibration absorber).

Claims

1. A rear suspension traction arm with a dynamic shock absorber, comprising a rear suspension traction arm body (1), wherein the rear suspension traction arm body (1) is composed of a sheet metal body, and the two ends are respectively a first connecting end (2) and a second connecting end (3); the first connecting end (2) is a U-shaped notch, and the second connecting end (3) is provided with a rubber bushing (4), wherein the rubber bushing (4) is fixed to the second connecting end (3) by a bolt and nut assembly, characterized in that: A dynamic vibration absorber (5) is provided at any position of the rear suspension traction arm body (1). The dynamic vibration absorber (5) is fixed to the rear suspension traction arm body (1) by a bolt and nut assembly. The installation position of the dynamic vibration absorber (5) and the installation position of the rubber bushing (4) are both located on the same plane. The direction of vibration absorption by the dynamic vibration absorber (5) is consistent with the height direction of the rear suspension traction arm body (1).

2. The rear suspension traction arm with a dynamic vibration absorber according to claim 1, characterized in that: The power vibration absorber (5) includes a vibration absorber housing (6) and a vibration absorber block (7). The vibration absorber housing (6) is provided with a central tube (8) and an annular tube (9). The outer wall of the central tube (8) is connected to the inner wall of the annular tube (9) by several connecting strips. The vibration absorber block (7) is tightly fitted inside the annular tube (9). The vibration absorber housing (6) and the vibration absorber block (7) are coaxial and parallel to the axis of the rubber bushing (4).

3. The rear suspension traction arm with a dynamic vibration absorber according to claim 2, characterized in that: The two ends of the central tube (8) extend out to their respective ends. A bushing (10) is provided inside the central tube (8). The bolt of the bolt and nut is inserted from one end of the bushing (10), passes through the rear suspension traction arm body (1), and is then locked with a nut. The end face of the bushing (10) abuts against the bottom surface of the rear suspension traction arm body (1).

4. The rear suspension traction arm with a dynamic vibration absorber according to claim 1, characterized in that: One end of the power shock absorber (5) is fixed to the rear suspension traction arm body (1), and the other end is far away from the rear suspension traction arm body (1) and is in a suspended state.

5. The rear suspension traction arm with a dynamic vibration absorber according to claim 1, characterized in that: The rear suspension traction arm body (1) has a recess in the middle part, and one end of the power shock absorber (5) is fixed in a position in the recess and close to the rubber bushing (4).

6. The rear suspension traction arm with a dynamic vibration absorber according to claim 2, characterized in that: A gap is provided between the shock absorber housing (6) and the bottom surface of the rear suspension traction arm body (1).

7. The rear suspension traction arm with a dynamic vibration absorber according to claim 2, characterized in that: The outer wall of the central tube (8) and the inner wall of the annular tube (9) are connected by several connecting strips, and there is a cavity between the adjacent connecting strips.

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