Hydraulic bushing

Abstract

A hydraulic bushing comprises an outer framework, an inner framework, a main spring, a flow channel, an upper check block and a lower check block. The main spring is arranged between the outer framework and the inner framework; the runner is arranged between the main spring and the outer framework; the upper stopper and the lower stopper are respectively fixed at the upper and lower ends of the inner framework; wherein the upper end and the lower end of the main spring are each provided with two second grooves, the upper check block and the lower check block are the same in structure, the upper check block comprises a fixing part and two extrusion parts which are integrally formed, the inner framework is sleeved with the fixing part, the two extrusion parts are arranged in the two second grooves respectively, and the inner side of the main spring is extruded through the extrusion parts. The upper check block and the lower check block are both fixed on the inner framework, the upper check block and the lower check block do not move up and down under the action of combined load, and therefore abnormal sound caused by movement of the upper check block and the lower check block is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber-metal vibration damping parts for vehicle chassis, in particular to a hydraulic bushing. Background Art

[0002] During the VD and NVH tuning process of OEM vehicles, the demand for NVH performance is increasing day by day. Especially in the era of new energy vehicles today, hydraulic bushings are widely used in the field of automotive shock absorption.

[0003] A hydraulic bushing generally consists of an outer skeleton, an inner skeleton, an inner cage, a flow channel, a rubber main spring, upper and lower stoppers, etc. The upper and lower stoppers used for limiting may move up and down under the action of a combined load, resulting in knocking noise.

[0004] Therefore, we propose a hydraulic bushing. Summary of the Utility Model

[0005] The applicant of the present utility model aims at the above-mentioned disadvantages in the existing production technology and provides a hydraulic bushing, so that the upper stopper and the lower stopper are both fixed on the inner skeleton, and the upper stopper and the lower stopper will not move up and down under the action of a combined load, thereby avoiding the abnormal noise caused by the movement of the upper stopper and the lower stopper.

[0006] The technical solution adopted by the present utility model is as follows:

[0007] A hydraulic bushing, comprising:

[0008] An outer skeleton and an inner skeleton;

[0009] A main spring disposed between the outer skeleton and the inner skeleton;

[0010] A flow channel disposed between the main spring and the outer skeleton;

[0011] An upper stopper and a lower stopper respectively fixed at the upper and lower ends of the inner skeleton;

[0012] Wherein, two second grooves are provided at both upper and lower ends of the main spring. The upper stopper and the lower stopper have the same structure. The upper stopper includes an integrally formed fixing part and an extrusion part. The fixing part is sleeved on the inner skeleton. There are two extrusion parts, and the two extrusion parts are respectively disposed in the two second grooves, and the inner side of the main spring is extruded through the extrusion parts.

[0013] It is further characterized in that:

[0014] An inner cage is provided at the bottom of the inner skeleton.

[0015] Steps are provided at both upper and lower ends of the inner skeleton, and an arc-shaped limiting groove is provided at a corner of the steps. A through hole is provided in the middle of the fixing part, and an arc-shaped protrusion matching the arc-shaped limiting groove is provided at a corner of the through hole.

[0016] The fixing part is stepped.

[0017] Limiting blocks are arranged on both sides of the through hole of the fixing part.

[0018] Two first grooves are arranged at both the upper and lower ends of the inner framework, and the first grooves and the second grooves are arranged at intervals.

[0019] The depth of the second groove is greater than that of the first groove.

[0020] A plurality of counterbores are arranged on the side of the extrusion part away from the fixing part.

[0021] The beneficial effects of the present utility model are as follows:

[0022] The structure of the present utility model is compact and reasonable, and the operation is convenient. The upper stop block and the lower stop block are both fixed on the inner framework, and the inner side of the main spring is extruded by the extrusion part. Under the action of the combined load, the upper stop block and the lower stop block will not move up and down, thereby avoiding abnormal noises caused by the movement of the upper stop block and the lower stop block. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the present utility model.

[0024] Figure 2 is Figure 1 the top view of

[0025] Figure 3 is Figure 2 the schematic A-A sectional view of

[0026] Figure 4 It is a schematic diagram of the upper stop block of the present utility model.

[0027] Figure 5 is Figure 4 the top view of

[0028] Figure 6 It is a schematic diagram of the inner framework and the main spring of the present utility model.

[0029] Wherein: 1. Outer framework; 2. Inner framework; 201. Arc-shaped limiting groove; 3. Inner cage; 4. Flow channel; 5. Main spring; 501. First groove; 502. Second groove; 6. Upper stop block; 601. Arc-shaped protrusion; 602. Limiting block; 603. Fixing part; 604. Extrusion part; 605. Through hole; 7. Lower stop block. Detailed Embodiment

[0030] The following combines the drawings to illustrate the detailed embodiment of the present utility model.

[0031] Such as Figures 1-6As shown in the figure, a hydraulic bushing includes an outer skeleton 1, an inner skeleton 2, an inner cage 3, a flow channel 4, a main spring 5, an upper stopper 6 and a lower stopper 7. The main spring 5 is arranged outside the inner skeleton 2, and the outer skeleton 1 is arranged outside the main spring 5. The material of the main spring 5 can be rubber. A flow channel 4 is arranged between the main spring 5 and the outer skeleton 1. The inner cage 3 is arranged at the bottom of the inner skeleton 2.

[0032] The upper stopper 6 and the lower stopper 7 are respectively arranged at the upper and lower ends of the inner skeleton 2, and both the upper stopper 6 and the lower stopper 7 are fixedly connected to the inner skeleton 2. The upper stopper 6 and the lower stopper 7 have the same structure. Steps are arranged at both the upper and lower ends of the inner skeleton 2, and an arc-shaped limiting groove 201 is arranged at a corner of the steps. The upper stopper 6 includes a fixing part 603 and an extrusion part 604. The fixing part 603 and the extrusion part 604 are integrally formed. The fixing part 603 is in a stepped shape. A through hole 605 is arranged in the middle of the fixing part 603. An arc-shaped protrusion 601 matching the arc-shaped limiting groove 201 is arranged at a corner of the through hole 605. Limiting blocks 602 are also arranged on both sides of the through hole 605. There are two extrusion parts 604, and the two extrusion parts 604 are symmetrically arranged. A plurality of counterbores are arranged on the side of the extrusion part 604 of the upper stopper 6 away from the fixing part 603.

[0033] Two first grooves 501 and two second grooves 502 are arranged at both the top and bottom of the main spring 5. The two first grooves 501 are symmetrically arranged, and the two second grooves 502 are symmetrically arranged. The depth of the second groove 502 is greater than the depth of the first groove 501. The first groove 501 and the second groove 502 are arranged at intervals.

[0034] The upper stopper 6 is sleeved on the steps of the inner skeleton 2 through the through hole 605, and the upper stopper 6 is limited by the cooperation of the arc-shaped limiting groove 201 and the arc-shaped protrusion 601, and the upper stopper 6 is further limited by the limiting blocks 602. The extrusion part 604 is located in the second groove 502 of the main spring 5, and the inner wall of the main spring 5 is extruded by the extrusion part 604. The lower stopper 7 is installed in the same way. Both the upper stopper 6 and the lower stopper 7 are fixed on the inner skeleton 2. The upper stopper 6 and the lower stopper 7 are completely restricted by the inner skeleton 2. Under the action of the combined load, the upper stopper 6 and the lower stopper 7 will not move up and down and cause knocking noise. It can avoid the knocking noise caused by the up and down movement of the upper stopper 6 and the lower stopper 7.

[0035] During specific use, both the upper stopper 6 and the lower stopper 7 are fixed on the inner skeleton 2, and the inner side of the main spring 5 is extruded by the extrusion part 604. Under the action of the combined load, the upper stopper 6 and the lower stopper 7 will not move up and down, thereby avoiding the knocking noise caused by the movement of the upper stopper 6 and the lower stopper 7.

[0036] The above description is an explanation of the present utility model, rather than a limitation thereof. For the scope defined by the present utility model, reference may be made to the claims. Any form of modification may be made within the scope of protection of the present utility model.

Claims

1. A hydraulic bushing, characterized in that, Comprising: An outer skeleton (1) and an inner skeleton (2); A main spring (5), arranged between the outer skeleton (1) and the inner skeleton (2); A runner (4), arranged between the main spring (5) and the outer skeleton (1); An upper stop block (6) and a lower stop block (7), respectively fixed to the upper and lower ends of the inner skeleton (2); Wherein, two second grooves (502) are arranged at both the upper and lower ends of the main spring (5), the upper stop block (6) and the lower stop block (7) have the same structure, the upper stop block (6) includes an integrally formed fixing part (603) and an extrusion part (604), the fixing part (603) is sleeved on the inner skeleton (2), there are two extrusion parts (604), and the two extrusion parts (604) are respectively arranged in the two second grooves (502), and the inner side of the main spring (5) is extruded through the extrusion part (604).

2. The hydraulic bushing according to claim 1, characterized in that: An inner cage (3) is arranged at the bottom of the inner skeleton (2).

3. A hydraulic bushing according to claim 1, wherein: Steps are arranged at both the upper and lower ends of the inner skeleton (2), and an arc-shaped limiting groove (201) is arranged at a corner of the steps. A through hole (605) is arranged in the middle of the fixing part (603), and an arc-shaped protrusion (601) matching the arc-shaped limiting groove (201) is arranged at a corner of the through hole (605).

4. A hydraulic bushing according to claim 3, characterized in that: The fixing part (603) is in a stepped shape.

5. The hydraulic bushing according to claim 3, wherein: Limiting blocks (602) are arranged on both sides of the through hole (605) of the fixing part (603).

6. The hydraulic bushing according to claim 1, characterized in that: Two first grooves (501) are arranged at both the upper and lower ends of the inner skeleton (2), and the first grooves (501) and the second grooves (502) are arranged at intervals.

7. The hydraulic bushing according to claim 6, wherein: The depth of the second groove (502) is greater than the depth of the first groove (501).

8. A hydraulic bushing according to claim 1, characterized in that: A plurality of counterbores are arranged on the side of the extrusion part (604) away from the fixing part (603).

Images