Hydraulic bushing with adjustable limiting block

Abstract

The hydraulic bushing with the adjustable limiting block comprises an inner pipe, a middle framework and an outer pipe which are made of metal materials, the inner pipe is of a cylindrical structure, a cylindrical rubber part is arranged outside the inner pipe in a sleeved mode, the middle framework is arranged on the outer wall of the rubber part in a sleeved mode, an annular liquid storage groove is formed in the outer wall of the rubber part, and the middle framework is arranged in the annular liquid storage groove in a sleeved mode. An annular limiting block is arranged in the liquid storage tank in a sleeved mode, a flow channel cover plate used for sealing the liquid storage tank is arranged outside the limiting block in a sleeved mode, the limiting block is made of rubber, and the flow channel cover plate is made of plastic; and a buffer solution is arranged in the liquid storage tank. The utility model has the beneficial effects that the assembly is easy, and the limiting block can be replaced, so that the overall rigidity is adjustable, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the field of automobiles, in particular to a hydraulic bushing with an adjustable limit block. Background Art

[0002] Hydraulic bushing is a common automotive part, which is used to realize shock-absorbing transmission between components. It includes an inner tube, a rubber part, a middle frame and an outer tube. Among them, the rubber part is an important part of shock absorption and noise reduction, and it also needs to have a certain rigidity to ensure transmission. It is also a common practice to set a cavity on the rubber part and then seal the shock-absorbing fluid in the cavity to improve the shock absorption effect. To ensure rigidity, a protruding limit block is usually set in the cavity to ensure that the limit block can provide support when subjected to force. The limit block is usually integrally formed with the rubber part. This makes the limit block non-replaceable, thereby adjusting the overall rigidity of the rubber part. Utility Model Content

[0003] The utility model aims to provide a hydraulic bushing with adjustable limit block which solves the above technical problems.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hydraulic bushing with an adjustable limit block comprises an inner tube, a middle frame and an outer tube made of metal material, the inner tube is a cylindrical structure, a cylindrical rubber part is arranged outside the inner tube, the middle frame is arranged on the outer wall of the rubber part, an annular liquid storage tank is arranged on the outer wall of the rubber part, an annular limit block is arranged inside the liquid storage tank, a flow channel cover plate for closing the liquid storage tank is arranged outside the limit block, the limit block is made of rubber, and the flow channel cover plate is made of plastic; a buffer solution is arranged in the liquid storage tank.

[0006] Preferably, the limit block includes a bottom and a top, the height of the bottom is greater than the height of the top, an annular groove is provided on the top, the flow channel cover plate is an annular structure, and a protruding annular clamping ring is provided on the flow channel cover plate corresponding to the groove, so that the limit block is clamped on the flow channel cover plate.

[0007] Preferably, the limit block is provided with a plurality of through-going communicating holes along the axial direction of the inner tube.

[0008] Preferably, the buffer is ethylene glycol.

[0009] Preferably, the outer tube is sleeved outside the flow channel cover plate.

[0010] Preferably, the outer tube is made of aluminum, the inner tube is made of iron, and the rubber part is vulcanized on the inner tube.

[0011] The utility model has the beneficial effects of being easy to assemble and having replaceable limit blocks, thereby making the overall rigidity adjustable and having a wide range of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0013] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure in the middle DD direction;

[0014] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure in the CC direction;

[0015] Figure 4 It is a schematic diagram of the cross-sectional structure of part of the structure. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0017] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0018] like Figures 1 to 4 As shown, a hydraulic bushing with adjustable limit block of the utility model comprises an inner tube 10, a middle frame 12 and an outer tube 14 made of metal material, the inner tube 10 is a cylindrical structure, a cylindrical rubber part 16 is arranged outside the inner tube 10, the middle frame 12 is arranged on the outer wall of the rubber part 16, an annular liquid storage tank 18 is arranged on the outer wall of the rubber part 16, an annular limit block 20 is arranged inside the liquid storage tank 18, a flow channel cover plate 22 for closing the liquid storage tank 18 is arranged outside the limit block 20, a plastic ring 34 is arranged outside the flow channel cover plate 22, and the outer tube 14 is arranged outside the plastic ring 34. A buffer solution is arranged in the liquid storage tank 18, and the buffer solution is ethylene glycol. The limit block 20 is not integrally formed with the rubber part 16, which is convenient for replacement, so as to obtain different stiffness.

[0019] Furthermore, the stopper 20 includes a bottom 24 and a top 26, the bottom 24 is higher than the top 26, an annular clamping groove 28 is provided on the top 26, the flow channel cover plate 22 is an annular structure, and a protruding annular clamping ring 30 is provided on the flow channel cover plate 22 corresponding to the clamping groove 28, so that the stopper 20 is clamped on the flow channel cover plate 22. This structure allows the stopper 20 and the flow channel cover plate 22 to be pre-assembled together, reducing the number of assembled parts.

[0020] Furthermore, a plurality of through communication holes 32 are provided on the limit block 20 along the axial direction of the inner tube 10 so that the buffer solution can flow in the liquid storage tank 18 .

[0021] Furthermore, the stopper 20 is made of rubber, and the flow channel cover plate 22 is made of plastic. The outer tube 14 is made of aluminum, the inner tube 10 is made of iron, and the rubber part 16 is vulcanized on the inner tube 10 .

[0022] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic bushing with adjustable limit block, comprising an inner tube, a middle frame and an outer tube made of metal material, wherein the inner tube is a cylindrical structure, and is characterized in that: A cylindrical rubber part is arranged outside the inner tube, the middle frame is arranged on the outer wall of the rubber part, the outer wall of the rubber part is provided with an annular liquid storage tank, an annular limit block is arranged inside the liquid storage tank, a flow channel cover plate for closing the liquid storage tank is arranged outside the limit block, the limit block is made of rubber, and the flow channel cover plate is made of plastic; a buffer solution is arranged in the liquid storage tank.

2. The hydraulic bushing with adjustable limit block according to claim 1, characterized in that: The limit block includes a bottom and a top, the height of the bottom is greater than the height of the top, an annular groove is arranged on the top, the flow channel cover plate is an annular structure, and a protruding annular clamping ring is arranged on the flow channel cover plate corresponding to the groove, so that the limit block is clamped on the flow channel cover plate.

3. The hydraulic bushing with adjustable limit block according to claim 1, characterized in that: The limit block is provided with a plurality of through communication holes along the axial direction of the inner tube.

4. The hydraulic bushing with adjustable limit block according to claim 1, characterized in that: The buffer is ethylene glycol.

5. The hydraulic bushing with adjustable limit block according to claim 1, characterized in that: The outer tube is sleeved outside the flow channel cover plate.

6. The hydraulic bushing with adjustable limit block according to claim 1, characterized in that: The outer tube is made of aluminum, the inner tube is made of iron, and the rubber portion is vulcanized on the inner tube.

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