Hydraulic bushing without outer tube

Abstract

The application belongs to the technical field of hydraulic bushing manufacturing, and particularly relates to a hydraulic bushing without an outer pipe, which comprises an aluminum support, a central mounting through hole of the aluminum support, one end of the mounting through hole being on the upper surface of the aluminum support and the other end being on the lower surface of the aluminum support, one circular groove being arranged on the upper and lower surfaces of the aluminum support respectively, the circular grooves being concentric with the mounting through hole, an inner pipe being coaxially arranged in the mounting through hole, a main rubber being sleeved on the outer circumferential surface of the inner pipe, a middle framework, flow channel rubber and plastic flow channel being arranged between the two ends of the outer surface of the main rubber, and all the interval walls between the circular grooves and the mounting through hole being tightly riveted on the end of the outer surface of the main rubber. The application adopts the mode of arranging the concentric circular grooves on the aluminum support to form the interval walls, so that the liquid can be sealed in the hydraulic bushing without arranging the outer pipe. Through abandoning the outer pipe, the problem of how to reduce the mass of the hydraulic bushing is solved.

Description

Technical Field

[0001] This application belongs to the field of hydraulic bushing manufacturing technology, specifically a hydraulic bushing that does not require an external tube. Background Technology

[0002] Currently, traditional swing arm hydraulic bushings with supports all have an outer tube. After the vulcanized body and flow channel rubber are vulcanized, they are filled underwater with the outer tube and then pressed into the support to form the unit.

[0003] The purpose of the outer tube is to seal the liquid between the vulcanized body and the flow channel rubber assembly and the outer tube. However, the presence of the outer tube increases the overall mass of the hydraulic bushing. Therefore, to meet customer quality requirements, it is necessary to research a lighter hydraulic bushing. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of existing technologies by using a method of setting a central groove on an aluminum bracket that is coaxial with the mounting through hole to form a partition wall. This allows the hydraulic bushing manufacturing process to be completed simply by pressing the main body rubber, flow channel rubber, plastic flow channel, and inner tube into the mounting through hole underwater, and then sealing and riveting the partition wall to the outer circumference of the main body rubber. This way, the liquid can be sealed inside the hydraulic bushing without the need for an outer tube. By eliminating the outer tube, the problem of how to reduce the weight of the hydraulic bushing is solved.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] A hydraulic bushing without an outer tube includes an aluminum bracket with a central mounting through hole. One end of the mounting through hole is on the upper surface of the aluminum bracket, and the other end is on the lower surface of the aluminum bracket. A circular groove is provided on each of the upper and lower surfaces of the aluminum bracket, and the circular groove is concentric with the mounting through hole. An inner tube is coaxially arranged inside the mounting through hole. A main body rubber is fitted on the outer circumference of the inner tube. A central skeleton, a flow channel rubber, and a plastic flow channel are provided between the two ends of the outer surface of the main body rubber. All partition walls between the circular groove and the mounting through hole are sealed and riveted to the ends of the outer surface of the main body rubber.

[0007] Preferably, the distance from the side of the circular groove facing the central axis of the mounting through hole to the mounting through hole is less than the depth of the circular groove.

[0008] Preferably, the opening of the circular groove has a chamfer on the side near the mounting through hole.

[0009] Preferably, a convex ring is provided radially at both the upper and lower ends of the outer circumferential surface of the main rubber body, and the flow channel rubber and plastic flow channel are both located between the two convex rings.

[0010] Preferably, the intermediate skeleton is located inside the convex ring.

[0011] Preferably, the inner circumferential wall of the mounting through hole is provided with recessed grooves at both ends, the recessed grooves are circular in shape and coaxial with the mounting through hole, and each of the convex rings has a protrusion on the side wall facing away from the main rubber body that cooperates with the recessed groove.

[0012] Preferably, the cross-section of the recessed groove is semi-circular.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] This application employs a method of setting a central groove on the aluminum bracket that is coaxial with the mounting through hole to form a partition wall. This allows the hydraulic bushing manufacturing process to be completed simply by pressing the main body rubber, flow channel rubber, plastic flow channel, and inner tube into the mounting through hole underwater, and then sealing and riveting the partition wall to the outer circumference of the main body rubber. This allows the liquid to be sealed inside the hydraulic bushing without the need for an outer tube. By eliminating the outer tube, the problem of how to reduce the weight of the hydraulic bushing is solved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this application;

[0016] Figure 2 This is a top view of this application;

[0017] Figure 3 for Figure 2 Section AA in the middle;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This is an exploded view of this application.

[0020] Among them, 1. aluminum bracket; 2. mounting through hole; 3. circular groove; 4. main body rubber; 5. inner tube; 6. middle frame; 7. flow channel rubber; 8. plastic flow channel; 9. convex ring; 10. recessed groove; 11. protrusion; 12. partition wall. Detailed Implementation

[0021] Reference Figure 1 - Figure 5A hydraulic bushing without an outer tube includes an aluminum bracket 1, with a central mounting through hole 2. One end of the mounting through hole 2 is on the upper surface of the aluminum bracket 1, and the other end is on the lower surface of the aluminum bracket 1. A circular groove 3 is provided on each of the upper and lower surfaces of the aluminum bracket 1, and the circular groove 3 is concentric with the mounting through hole 2. An inner tube 5 is coaxially arranged inside the mounting through hole 2. A main body rubber 4 is fitted on the outer circumference of the inner tube 5. A central skeleton 6, a flow channel rubber 7, and a plastic flow channel 8 are provided between the two ends of the outer surface of the main body rubber 4. All the partition walls 12 between the circular groove 3 and the mounting through hole 2 are sealed and riveted to the ends of the outer surface of the main body rubber 4.

[0022] In this embodiment, during manufacturing, the main body rubber 4 is first installed on the outer circumferential surface of the inner tube 5. Then, the flow channel rubber 7 and plastic flow channel 8 are installed on the main body rubber 4. Next, the aluminum bracket 1, the main body rubber 4, the flow channel rubber 7, and the plastic flow channel 8 are immersed in liquid. Then, the main body rubber 4 with the flow channel rubber 7 and plastic flow channel 8 installed is inserted into the mounting through hole 2. Finally, by squeezing, the free end of the spacer wall 12 is pressed tightly against the main body rubber 4, thereby sealing the liquid (solution) between the main body rubber 4 and the inner wall of the mounting through hole 2. In contrast, traditional hydraulic bushings do not have a spacer wall 12, so an outer tube is required to work together with the main body rubber 4 to seal the liquid.

[0023] As a preferred embodiment, the distance from the side of the circular groove 3 facing the central axis of the mounting through hole 2 to the mounting through hole 2 is less than the depth of the circular groove 3. This arrangement facilitates pressing the partition wall 12 towards the main rubber 4 when the partition wall 12 is sealed to the main rubber 4.

[0024] As a preferred embodiment, the opening of the circular groove 3 has a chamfer on the side near the mounting through hole 2. The purpose of this design is to facilitate pressing the partition wall 12 toward the main rubber 4 when sealing the partition wall 12 with the main rubber 4, as the chamfer makes this easier.

[0025] As a preferred embodiment, a convex ring 9 is provided radially at both the upper and lower ends of the outer circumferential surface of the main body rubber 4, and the flow channel rubber 7 and the plastic flow channel 8 are both located between the two convex rings 9. By providing the convex rings 9, the two convex rings 9 together with the outer circumferential wall of the main body rubber 4 and the circumferential wall of the mounting through hole 2 form a cavity, thereby sealing the liquid.

[0026] As a preferred embodiment, the central skeleton 6 is located within the convex ring 9.

[0027] As a preferred embodiment, the inner circumferential wall of the mounting through hole 2 is provided with recessed grooves 10 at both ends. The recessed grooves 10 are circular and coaxial with the mounting through hole 2. Each convex ring 9 has a protrusion 11 on its sidewall facing away from the main body rubber 4, which mates with the recessed groove 10. With this configuration, after the main body rubber 4 is installed in the mounting through hole 2, the protrusion 11 will be squeezed into the recessed groove 10, thereby achieving a sealing effect. That is, in addition to the sealing provided by the partition wall 12, an extra layer of protection is added.

[0028] As a preferred method, such as Figure 4 As shown, the cross-section of the recessed groove 10 is semi-circular. The cross-section of the recessed groove 10 is semi-circular, and the cross-section of the protrusion 11 is also semi-circular. This arrangement facilitates the protrusion 11 entering the recessed groove 10, and at the same time allows the protrusion 11 to fully contact the inner wall of the recessed groove 10.

Claims

1. A hydraulic bushing without an outer tube, characterized in that, The system includes an aluminum bracket (1), with a central mounting through hole (2). One end of the mounting through hole (2) is on the upper surface of the aluminum bracket (1), and the other end is on the lower surface of the aluminum bracket (1). A circular groove (3) is provided on each of the upper and lower surfaces of the aluminum bracket (1). The circular groove (3) is concentric with the mounting through hole (2). An inner tube (5) is coaxially arranged inside the mounting through hole (2). A main body rubber (4) is fitted on the outer circumference of the inner tube (5). A central skeleton (6), a flow channel rubber (7), and a plastic flow channel (8) are provided between the two ends of the outer surface of the main body rubber (4). All the partition walls (12) between the circular groove (3) and the mounting through hole (2) are sealed and riveted to the ends of the outer surface of the main body rubber (4).

2. A hydraulic bushing without an outer tube according to claim 1, characterized in that, The distance from the side of the circular groove (3) facing the central axis of the mounting through hole (2) to the mounting through hole (2) is less than the depth of the circular groove (3).

3. A hydraulic bushing without an outer tube according to claim 2, characterized in that, The opening of the circular groove (3) has a chamfer on the side near the mounting through hole (2).

4. A hydraulic bushing without an outer tube according to claim 1, characterized in that, The outer circumference of the main body rubber (4) is provided with a convex ring (9) at both the upper and lower ends, and the flow channel rubber (7) and plastic flow channel (8) are located between the two convex rings (9).

5. A hydraulic bushing without an outer tube according to claim 4, characterized in that, The central skeleton (6) is located inside the convex ring (9).

6. A hydraulic bushing without an outer tube according to claim 4, characterized in that, The inner circumferential wall of the mounting through hole (2) is provided with recessed grooves (10) at both ends. The recessed grooves (10) are circular in shape and coaxial with the mounting through hole (2). Each of the protruding rings (9) has a protrusion (11) on its side wall facing away from the main body rubber (4) that cooperates with the recessed groove (10).

7. A hydraulic bushing without an outer tube according to claim 6, characterized in that, The cross-section of the recessed groove (10) is semi-circular.

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