Hydraulic damping bushing capable of preventing lining pipe from rotating

Abstract

The utility model discloses a hydraulic shock-absorbing bushing for preventing a lining pipe from rotating, which comprises a bushing inner pipe, a bushing outer pipe and a rubber body, an accommodating cavity is arranged in the rubber body, damping fluid is filled in the accommodating cavity, anti-rotating teeth matched with the side surface of a nut are arranged on the upper end surface and the lower end surface of the bushing inner pipe, the depth of the anti-rotating teeth is 0.5 mm, and the anti-rotating teeth are matched with the side surface of the nut. The center line of the lining inner pipe and the center line of the lining outer pipe are eccentrically arranged, an upper framework is arranged on the upper portion in the rubber body, a lower framework is arranged on the lower portion in the rubber body, the upper framework comprises a framework cylinder arranged in the rubber body and a flanging framework partially extending out of the rubber body, and the lower framework is arranged on the lower portion in the rubber body. The flanging framework is located above the upper end face of the lining outer pipe, and a distance D exists between the flanging framework and the upper end face of the lining outer pipe. According to the structure, the anti-rotation devices with the depth of 0.5 mm are additionally arranged on the two end faces of the lining inner pipe to prevent the bolt and the lining from rotating, and therefore the stability of the lining in the using process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the relevant technical field of automobile shock absorber accessories, in particular to a hydraulic shock-absorbing bushing for preventing an inner liner pipe from spinning. Background Art

[0002] At present, the bushings used in the guide device of the automobile suspension system are generally rubber bushings, which are the hinge points connecting the control arm or thrust rod in the guide device with the car body. Rubber bushings have good vibration isolation performance, desired elastic characteristics and attenuation, and have become an indispensable and important component in automobiles. Therefore, a reasonable design of rubber bushings can ensure that the whole vehicle has good handling stability and smoothness.

[0003] The rubber bushings in the prior art, such as the patent number 20232970812.0 previously applied for by our company, are named as an anti-roll bushing. The antifreeze liquid in the structure is injected into the structure by means of liquid filling, so that the bushing can still have high stability and safety in the cold winter, and finally improve the service life of the bushing. However, it was found during use that during the installation of the bushing, the side nut of the bushing is prone to spinning between the side of the bushing after being tightened, resulting in poor locking effect. Moreover, when the bushing is installed on the vehicle, the inner tube has the same deflection force, so it is easy to tilt, which ultimately affects the connectivity. Utility Model Content

[0004] The utility model aims to provide a hydraulic shock-absorbing bushing for preventing the inner liner pipe from rotating, so as to solve the problem that the side nut of the bushing is prone to rotating between the side of the bushing after being tightened during the loading process, resulting in poor locking effect, and the bushing is prone to tilting due to the same deflection force of the inner tube when loading, which ultimately affects the connectivity.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a hydraulic shock-absorbing bushing for preventing an inner liner tube from rotating, comprising an inner bushing tube, an outer bushing tube and a rubber body located between the inner bushing tube and the outer bushing tube, wherein an accommodating cavity is arranged in the rubber body, and a damping liquid is contained in the accommodating cavity, and anti-rotation teeth cooperating with the side surface of a nut are provided on the upper and lower end surfaces of the inner bushing tube, and the depth of the anti-rotation teeth is 0.5 mm, and the center line of the inner bushing tube and the center line of the outer bushing tube are eccentrically arranged, an upper skeleton is arranged above the rubber body, and a lower skeleton is arranged below the rubber body, and the upper skeleton comprises a skeleton cylinder arranged in the rubber body and a flanged skeleton partially extending out of the rubber body, and the flanged skeleton is located above the upper end surface of the outer bushing tube, and there is a spacing D between the flanged skeleton and the upper end surface of the outer bushing tube.

[0007] Preferably, in order to improve the connectivity, a flange portion abutting against the upper end surface of the bushing outer tube is provided above the rubber body, and the flange frame is inserted into the flange portion and partially exposes the flange portion.

[0008] Preferably, rubber grooves are provided on the upper and lower sides of the rubber body, and a trapezoidal rubber table surface integrally formed with the rubber body is provided in the rubber groove.

[0009] Preferably, a first rubber pad is arranged above the outer side of the bushing inner tube, and a second rubber pad is arranged below the outer side of the bushing inner tube, and the outer sides of the first rubber pad and the second rubber pad abut against the inner wall of the rubber groove.

[0010] Preferably, the eccentric distance between the center line of the inner tube of the bushing and the center line of the outer tube of the bushing is 1.5 mm.

[0011] Preferably, in order to improve the connectivity, a lower flange layer with a downward flange is provided below the flange frame, and the inner wall of the lower flange layer abuts against the outer wall of the bushing outer tube.

[0012] Preferably, in order to improve the sealing performance, two sealing rings are arranged at the position where the outer side of the rubber body abuts against the outer tube of the bushing, and the two sealing rings are respectively located at the upper and lower positions of the accommodating cavity and close to the accommodating cavity.

[0013] The utility model has the following beneficial effects: by setting a specific upper frame, the outer tube of the bushing and the rubber body are effectively fixed together, so that the outer tube of the bushing and the rubber body are firmly connected and will not fall off, and the gap between the outer tube of the bushing and the rubber body is reduced, and the damping fluid is not easy to enter the gap, and the two end surfaces of the inner tube of the bushing are additionally provided with anti-rotation bolts with a depth of 0.5mm to prevent the bushing from rotating, thereby ensuring the stability of the bushing during use. At the same time, the center distance between the inner tube of the bushing and the outer tube of the bushing deviates by 1.5mm, so that the deflection force of the inner tube of the bushing is different during the loading process, and finally the tilting is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A top view of a hydraulic shock-absorbing bushing for preventing an inner liner pipe from spinning in Example 1;

[0015] Figure 2 A cross-sectional schematic diagram showing the side structure of a hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning in Example 1;

[0016] Figure 3 for Figure 2 A magnified image of point A;

[0017] Figure 4 A cross-sectional schematic diagram showing the side structure of a hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning in Example 2;

[0018] Figure 5 This is a cross-sectional schematic diagram showing the side structure of a hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning in Example 3.

[0019] Reference numerals:

[0020] Bushing inner tube 1, bushing outer tube 2, rubber body 3, trapezoidal rubber table top 301, flanged portion 302, upper frame 4, frame cylinder 401, flanged frame 402, sealing ring 5, anti-rotation teeth 6, accommodating cavity 7, lower frame 8, rubber groove 9, damping fluid 10, lower flanged layer 11, first rubber pad 12, second rubber pad 13, bushing inner hole 14. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1-3 As shown, the present embodiment discloses a hydraulic shock-absorbing bushing for preventing the inner liner tube from rotating, comprising a bushing inner tube 1, a bushing outer tube 2 and a rubber body 3 located between the bushing inner tube 1 and the bushing outer tube 2, wherein a receiving chamber 7 is provided in the rubber body 3, and a damping fluid 10 is filled in the receiving chamber 7, and anti-rotation teeth 6 cooperating with the side surfaces of the nut are provided on the upper and lower end surfaces of the bushing inner tube 1, and the depth of the anti-rotation teeth 6 is 0.5 mm, and the center line of the bushing inner tube 1 and the center line of the bushing outer tube 2 are eccentrically arranged.

[0024] Preferably, an upper skeleton 4 is arranged above the rubber body 3, and a lower skeleton 8 is arranged below the rubber body 3, the upper skeleton 4 includes a skeleton cylinder 401 placed in the rubber body 3 and a flanged skeleton 402 partially extending out of the rubber body 3, and the flanged skeleton 402 is located above the upper end surface of the bushing outer tube 2, and there is a spacing D between the flanged skeleton 402 and the upper end surface of the bushing outer tube 2.

[0025] Preferably, in order to improve connectivity, a flange portion 302 abutting against the upper end surface of the bushing outer tube 2 is provided above the rubber body 3 , and the flange skeleton 402 is inserted into the flange portion 302 and partially exposes the flange portion 302 .

[0026] Preferably, rubber grooves 9 are provided on the upper and lower sides of the rubber body 3 , and a trapezoidal rubber table surface 301 integrally formed with the rubber body 3 is provided in the rubber groove 9 .

[0027] Preferably, a first rubber pad 12 is provided above the outer side of the bushing inner tube 1 , and a second rubber pad 13 is provided below the outer side of the bushing inner tube 1 , and the outer sides of the first rubber pad 12 and the second rubber pad 13 abut against the inner wall of the rubber groove 9 .

[0028] Preferably, the eccentric distance between the center line of the bushing inner tube 1 and the center line of the bushing outer tube 2 is 1.5 mm.

[0029] In the present structure, the bushing inner tube 1, the bushing outer tube 2 and the rubber body 3 are fixedly connected by vulcanization, and can be directly connected during the processing, with a firm connection and no need for extra connecting parts. In the present embodiment, the bushing inner tube 1 and the bushing outer tube 2 are respectively made of cast iron materials, with low raw material cost and convenient processing and manufacturing. The bushing inner tube 1 is provided with a bushing inner hole 14 that passes through the upper and lower ends of the bushing inner tube 1, and the bushing is assembled to the part through the bushing inner hole 14. A specific upper skeleton 4 is provided between the bushing outer tube 2 and the rubber body 3, and the upper skeleton 4 includes a skeleton cylinder 401 inserted into the rubber body 3 and a flange skeleton 402 that partially extends out of the rubber body 3, and the flange skeleton 402 can well limit the rubber body 3, and finally realize the fixed limiting effect on the rubber body 3, so as to realize the firm connection between the bushing outer tube 2 and the rubber body 3 and prevent it from falling off, and a accommodating chamber 7 is provided in the rubber body 3, and the accommodating chamber 7 is filled with a damping fluid 10, and the damping fluid 10 is Ethylene glycol or propylene glycol, the accommodating chamber 7 is symmetrically distributed in a U shape, and finally the rubber body 3 is concave inward to form a shape of the accommodating chamber 7 for accommodating the damping fluid 10. The concave accommodating chamber 7, on the one hand, prevents the damping fluid 10 from accumulating at one end of the accommodating chamber 7 and affecting the buffering and shock absorbing effect, while increasing the flow damping of the damping fluid 10 and improving the shock absorbing effect. On the other hand, it plays a role in improving the radial dynamic elastic rigidity of the bushing, and at the same time makes the connection between the rubber body 3 and the bushing inner tube 1 more reliable; rubber grooves 9 are provided at the upper and lower ends of the rubber body 3, so that when the rubber body 3 produces corresponding deformation, there is a certain space to compensate for the volume change caused by the deformation of the rubber body 3, so as not to produce a large elastic force due to excessive restriction of the deformation of the rubber; at the same time, in the present structure, anti-rotation teeth 6 are provided on the two end faces of the bushing inner tube 1, and the center distance between the bushing inner tube 1 and the bushing outer tube 2 deviates by 1.5 mm, so that the deflection force of the bushing inner tube during the loading process is different, and finally the tilt is prevented. There are 0.5mm deep anti-rotation teeth on both ends of the inner tube of the bushing to prevent the bolts from rotating, thereby ensuring the stability of the bushing during use.

[0030] To summarize, by setting a specific upper skeleton 4, the bushing outer tube 2 and the rubber body 3 are effectively fixed together, so that the bushing outer tube 2 and the rubber body 3 are firmly connected and will not fall off, and the gap between the bushing outer tube 2 and the rubber body 3 is reduced, the damping fluid 10 is not easy to enter the gap, and anti-rotation teeth 6 with a depth of 0.5mm are added to the two end surfaces of the bushing inner tube 1 to prevent the bolts and the bushing from rotating, thereby ensuring the stability of the bushing during use. At the same time, the center distance between the bushing inner tube 1 and the bushing outer tube 2 deviates by 1.5mm, so that the deflection force of the bushing inner tube during loading is different, thereby preventing tilting.

[0031] Example 2

[0032] See also Figure 4 As shown, the general structure of a hydraulic shock-absorbing bushing for preventing the inner liner tube from rotating disclosed in this embodiment is the same as that of Embodiment 1, except that, as a preference, in order to improve the connectivity, a lower flange layer 11 with a downward flange is provided below the flange skeleton 402, and the inner wall of the lower flange layer 11 is abutted against the outer wall of the bushing outer tube 2. By providing a lower flange layer 11 with a downward flange below the flange skeleton 402, this structure further realizes a secure connection between the bushing outer tube 2 and the rubber body 3 that will not fall off.

[0033] Example 3

[0034] See also Figure 5 As shown, the general structure of a hydraulic shock-absorbing bushing for preventing the inner liner tube from rotating disclosed in this embodiment is the same as that of Embodiment 1, except that, as a preference, in order to improve the sealing performance, two sealing rings 5 ​​are arranged at the position where the outer side of the rubber body 3 abuts against the outer tube 2 of the bushing, and the two sealing rings 5 ​​are respectively located at the upper and lower positions of the accommodating chamber 7 and close to the accommodating chamber 7. The sealing ring 5 is arranged between the outer side of the rubber body 3 and the inner side of the outer tube 2 of the bushing through the above-mentioned structure to further improve the sealing performance.

[0035] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A hydraulic shock-absorbing bushing for preventing an inner liner tube from spinning, comprising a bushing inner tube (1), a bushing outer tube (2), and a rubber body (3) located between the bushing inner tube (1) and the bushing outer tube (2), wherein a receiving chamber (7) is provided in the rubber body (3), and a damping fluid (10) is contained in the receiving chamber (7), and characterized in that: Anti-rotation teeth (6) cooperating with the side faces of the nut are provided on the upper and lower end faces of the bushing inner tube (1), the depth of the anti-rotation teeth (6) is 0.5 mm, the center line of the bushing inner tube (1) and the center line of the bushing outer tube (2) are eccentrically arranged, an upper skeleton (4) is arranged above the rubber body (3), and a lower skeleton (8) is arranged below the rubber body (3), the upper skeleton (4) includes a skeleton cylinder (401) disposed in the rubber body (3) and a flanged skeleton (402) partially extending out of the rubber body (3), and the flanged skeleton (402) is located above the upper end face of the bushing outer tube (2) and has a spacing D between the flanged skeleton (402) and the upper end face of the bushing outer tube (2).

2. A hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning according to claim 1, characterized in that: A flange portion (302) is provided above the rubber body (3) and abuts against the upper end surface of the bushing outer tube (2); the flange frame (402) is inserted into the flange portion (302) and partially exposes the flange portion (302).

3. A hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning according to claim 2, characterized in that: Rubber grooves (9) are provided above and below the rubber body (3), and a trapezoidal rubber tabletop (301) formed integrally with the rubber body (3) is provided in the rubber groove (9).

4. A hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning according to claim 3, characterized in that: A first rubber pad (12) is arranged above the outer side of the bushing inner tube (1), and a second rubber pad (13) is arranged below the outer side of the bushing inner tube (1). The outer sides of the first rubber pad (12) and the second rubber pad (13) abut against the inner wall of the rubber groove (9).

5. A hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning according to claim 1, 2, 3 or 4, characterized in that: The eccentric distance between the center line of the bushing inner tube (1) and the center line of the bushing outer tube (2) is 1.5 mm.

6. A hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning according to claim 1 or 2, characterized in that: A lower flange layer (11) that is flanged downward is provided below the flange frame (402), and the inner wall of the lower flange layer (11) abuts against the outer wall of the bushing outer tube (2).

7. A hydraulic shock-absorbing bushing for preventing the inner liner pipe from spinning according to claim 1, 2, 3 or 4, characterized in that: Two sealing rings (5) are arranged at the position where the outer side of the rubber body (3) abuts against the outer tube of the bushing (2), and the two sealing rings (5) are respectively located at the upper and lower positions of the accommodating cavity (7) and close to the accommodating cavity (7).

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