Swing arm bushing

Abstract

The utility model discloses a swing arm bushing which is used for connecting a swing arm and an auxiliary frame of a vehicle. Comprising an inner core of a cylindrical structure, and an auxiliary frame is arranged in the inner core; two containing cavities are symmetrically formed in the outer wall of the rubber main spring, and damping liquid is arranged in the containing cavities; the two arc-shaped flow channel plates are arranged outside the containing cavity to seal the containing cavity, and the outer wall of each flow channel plate is provided with a U-shaped flow channel; an outer tube; and the two runner rubber plates are arranged outside the runner plate to separate the outer pipe from the runner plate. The utility model has the beneficial effects that the stress is changed through the damping liquid, and the soft transmission efficiency is improved; through the combination of the outer collision block and the inner collision block, the strength of the whole structure can be improved, and a through groove is formed in the inner collision block; the runner plate and the outer pipe are separated through the runner rubber plate, friction between the runner plate and the outer pipe is reduced through rubber, and abnormal sound is reduced; and the limiting groove and the limiting block are matched to position the runner rubber plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vehicle, concretely relates to a swing arm bushing for connecting swing arm and auxiliary frame of vehicle. BACKGROUND

[0002] The swing arm and frame of vehicle are connected by the swing arm bushing to realize flexible connection, so as to meet the demand of noise reduction and shock absorption. In order to improve damping, two cavities are arranged, and damping liquid is arranged in the cavities, one is used for braking, and the other is used for acceleration, and the damping liquid in one cavity moves to the other cavity when stressed, so as to change stress. The flow channel plate is made of nylon, and the outer wall of the flow channel plate is provided with a flow channel communicating with the two cavities. When stressed, the flow channel plate directly contacts the outer tube, and friction occurs, which is the source of abnormal sound. SUMMARY

[0003] The utility model discloses a swing arm bushing for solving or partially solving the above technical problems.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A swing arm bushing for connecting swing arm and auxiliary frame of vehicle, characterized by comprising:

[0006] An inner core in cylindrical structure, wherein the auxiliary frame is arranged in the inner core;

[0007] A rubber main spring in tubular structure, arranged outside the inner core, wherein two accommodation cavities are symmetrically arranged on the outer wall of the rubber main spring, and damping liquid is arranged in the accommodation cavities;

[0008] A middle framework arranged outside the rubber main spring;

[0009] Two arc-shaped flow channel plates arranged outside the accommodation cavities to close the accommodation cavities, wherein a U-shaped flow channel is arranged on the outer wall of each flow channel plate; one end of the flow channel is provided with a through hole communicating with the accommodation cavities, and the other end of the flow channel extends to the front part of the flow channel plate to communicate with the flow channel on the other flow channel plate; the rear part of each flow channel plate is provided with a notch communicating with the accommodation cavities, and a groove communicating with the two notches is arranged on the rubber main spring;

[0010] An outer tube in cylindrical structure, arranged outside the flow channel plate and connected with the swing arm;

[0011] Two flow channel rubber plates arranged outside the flow channel plate to separate the outer tube and the flow channel plate.

[0012] Preferably, an arc-shaped outer impact block is arranged in the accommodation cavity.

[0013] Preferably, the inner side of the flow channel plate is provided with an arc-shaped inner striker corresponding to the striker, and a through slot is arranged on the inner wall of the inner striker.

[0014] Preferably, the flow channel plate is made of nylon.

[0015] Preferably, a plurality of limiting grooves are arranged on the outer wall of the flow channel plate, and a limiting block protruding inward is arranged on the inner wall of the flow channel rubber plate corresponding to the limiting groove.

[0016] Preferably, the flow channel rubber plate is provided with a slot with the same shape as the flow channel, and a slot with a matching shape is arranged at a position corresponding to the notch.

[0017] Preferably, the outer tube, the inner core and the middle framework are made of aluminum alloy.

[0018] Preferably, the middle framework comprises two coaxial upper rings and lower rings, and two arc-shaped connecting plates connecting the upper ring and the lower ring.

[0019] Preferably, the rubber main spring has a sheath extending axially outward along the inner core at both ends.

[0020] The beneficial effects of the utility model are as follows: the stress is changed by the damping liquid, the efficiency of soft transmission is improved, the combination of the outer striker and the inner striker can improve the strength of the overall structure, the through slot on the inner striker, the flow channel rubber plate separates the flow channel plate and the outer tube, the friction between the flow channel plate and the outer tube is reduced by the rubber, and the abnormal sound is reduced; the limiting groove and the limiting block cooperate to position the flow channel rubber plate. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a three-dimensional structure schematic view of the first embodiment of the utility model;

[0022] Figure 2 is a three-dimensional view of the first embodiment of the utility model after removing the outer tube;

[0023] Figure 3 is a sectional view of the first embodiment of the utility model;

[0024] Figure 4 is a three-dimensional view of the rubber main spring;

[0025] Figure 5 is a three-dimensional view of the flow channel plate;

[0026] Figure 6 is a three-dimensional view of the flow channel plate from another angle;

[0027] Figure 7 is a three-dimensional view of the flow channel rubber plate;

[0028] Figure 8 is a three-dimensional view of the middle framework. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0030] In the description of this utility model, it should be noted that the terms "inner", "outer", "upper", "lower", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] like Figures 1 to 8 As shown, the swing arm bushing of this utility model is used to connect the swing arm and subframe of a vehicle; it includes:

[0032] The inner core 10 has a cylindrical structure, and the subframe is located inside the inner core 10.

[0033] The rubber main spring 12 is made of rubber and is tubular. It is sleeved on the outer wall of the inner core 10. Two receiving cavities 14 are symmetrically arranged on the outer wall of the rubber main spring 12, and damping fluid is placed in the receiving cavities 14.

[0034] The central frame 16 is sleeved on the outside of the rubber main spring 12 to fix the rubber main spring 12;

[0035] Two arc-shaped flow channel plates 18, made of nylon, are positioned outside the receiving cavity 14 to enclose it. Each flow channel plate 18 has a U-shaped flow channel 20 on its outer wall. One end of each flow channel 20 has a through hole 22 connecting to the receiving cavity 14, and the other end extends to the edge of the flow channel plate 18 and connects to a flow channel 20 on the other flow channel plate 18. The rear of each flow channel plate 18 has a notch 24 connecting to the receiving cavity 14, and the rubber main spring 12 has a groove 26 connecting the two notches 24. This structure allows the two receiving cavities 14 to connect to each other at one end through the flow channel 20 and at the other end through the notch 24 and groove 26, forming an annular flow path. This allows the damping fluid to flow freely between the two receiving cavities 14, thereby altering the transmission.

[0036] The outer tube 28 has a cylindrical structure and is fitted outside the flow channel plate 18 and connected to the swing arm.

[0037] Two flow channel rubber plates 30 are set outside the flow channel plate 18 to separate the outer tube 28 and the flow channel plate 18.

[0038] An arc-shaped outer impact block 32 is provided inside the receiving cavity 14, and an arc-shaped inner impact block 34 is provided on the inner side of the flow channel plate 18 corresponding to the impact block. A through groove 36 is provided on the inner wall of the inner impact block 34 to facilitate the flow of damping fluid in the receiving cavity 14.

[0039] The outer wall of the flow channel plate 18 is provided with several limiting grooves 38, and the inner wall of the flow channel rubber plate 30 is provided with inwardly protruding limiting blocks 40 corresponding to the limiting grooves 38. The combination of the limiting grooves 38 and the limiting blocks 40 plays a limiting role.

[0040] The flow channel rubber plate 30 is provided with a groove 42 that is the same shape as the flow channel 20. The groove 42 is a through structure. The flow channel rubber plate 30 is provided with a matching groove 52 at the position corresponding to the notch 24 to enlarge the opening of the flow channel 20.

[0041] The outer tube 28, inner core 10, and middle frame 16 are made of aluminum alloy. The middle frame 16 includes two coaxial upper rings 44 and lower rings 46, and two arc-shaped connecting plates 48 connecting the upper rings 44 and lower rings 46.

[0042] The rubber main spring 12 has sheaths 50 extending outward along the axial direction of the inner core 10 at both ends. The sheaths 50 extend the contact area between the rubber main spring 12 and the inner core 10 and improve the bonding strength between the rubber main spring 12 and the inner core 10.

[0043] This invention relates to a swing arm bushing employing damping fluid. The damping is altered by the flow of the damping fluid between the two receiving cavities 14, achieving a buffering effect and reducing vibration during soft transmission. The outer impact block 32 and the inner impact block 34 abut against each other under pressure, improving the overall structural rigidity. A flow channel rubber plate 30 separates the outer tube 28 and the flow channel plate 18 to prevent abnormal noise and wear caused by friction between nylon and metal.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A control arm bushing for connecting a vehicle's control arm and subframe; characterized in that, include: The inner core has a cylindrical structure, and the subframe is located inside the inner core. The rubber main spring is tubular and sleeved outside the inner core. Two receiving cavities are symmetrically arranged on the outer wall of the rubber main spring, and damping fluid is placed in the receiving cavities. The central frame is sleeved outside the rubber main spring; Two arc-shaped flow channel plates are disposed outside the receiving cavity to close it. Each flow channel plate has a U-shaped flow channel on its outer wall. One end of each flow channel has a through hole communicating with the receiving cavity, and the other end of each flow channel extends to the front of the flow channel plate to communicate with a flow channel on the other flow channel plate. The rear of each flow channel plate has a notch communicating with the receiving cavity, and the rubber main spring has a groove communicating with the two notches. The outer tube, a cylindrical structure, is fitted over the flow channel plate and connected to the swing arm; Two flow channel rubber plates are set outside the flow channel plate to separate the outer tube from the flow channel plate.

2. The swing arm bushing according to claim 1, characterized in that, An arc-shaped external impact block is provided inside the receiving cavity.

3. A swing arm bushing according to claim 2, characterized in that, An arc-shaped inner impact block is provided on the inner side of the flow channel plate corresponding to the impact block, and a through groove is provided on the inner wall of the inner impact block.

4. A swing arm bushing according to claim 1, characterized in that, The flow channel plate is made of nylon.

5. A swing arm bushing according to claim 4, characterized in that, The outer wall of the flow channel plate is provided with a number of limiting grooves, and the inner wall of the flow channel rubber plate is provided with inwardly protruding limiting blocks corresponding to the limiting grooves.

6. A swing arm bushing according to claim 1, characterized in that, The flow channel rubber plate is provided with a groove with the same shape as the flow channel, and a groove with the same shape is provided at the position corresponding to the notch.

7. A swing arm bushing according to claim 1, characterized in that, The outer tube, inner core, and central frame are made of aluminum alloy.

8. A swing arm bushing according to claim 1, characterized in that, The central frame includes two coaxial upper and lower rings, and two arc-shaped connecting plates connecting the upper and lower rings.

9. A swing arm bushing according to claim 1, characterized in that, The rubber main spring has sheaths at both ends that extend outward along the axial direction of the inner core.

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