Limiting bush for automobile transmission device

Abstract

The utility model discloses a limit bushing for an automobile transmission device, which relates to the technical field of automobile spare parts and comprises a buffer mechanism, the buffer mechanism comprises a rubber sleeve, four positioning grooves are formed in the inner wall of the rubber sleeve in an annular array mode, four slots are formed in one end of the rubber sleeve in an annular array mode, and the four positioning grooves are matched with the slots. Four mounting grooves are formed in the outer portion of the rubber sleeve in an annular array mode, buffer elastic pieces are arranged in the four mounting grooves, a lining pipe is arranged in the rubber sleeve, and four positioning blocks are arranged on the outer portion of the lining pipe in an annular array mode. Impact force generated by collision can be slowly released through the rubber sleeve and the buffer elastic piece arranged in the mounting groove formed in the rubber sleeve, it is ensured that the lining pipe and the transmission shaft rod are not damaged due to impact, in addition, the magnetic block can be sucked out of the inserting groove through the magnetic suction ring, the buffer elastic piece in the mounting groove can be replaced, and the service life of the transmission shaft rod is prolonged. And the overall buffering effect of the buffering mechanism is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a limiting bushing used for an automobile transmission device. Background Art

[0002] The limit bushing of the automobile transmission is an important component in the automobile transmission system. Its main function is to reduce the friction between two moving parts, thereby protecting these parts from wear. This bushing is usually made of wear-resistant materials such as metal or plastic to ensure its durability and stability.

[0003] However, in the prior art, when the traditional bushing is used to protect the transmission shaft, various parts of the transmission device may collide with the bushing, and such collision may cause damage to the bushing, thereby affecting its protective effect on the transmission shaft. Once the bushing cannot effectively protect the transmission shaft, the transmission shaft may be damaged, thereby affecting the normal operation of the entire transmission device. Therefore, we provide a limit bushing for an automobile transmission device. Utility Model Content

[0004] The purpose of the utility model is to provide a limiting bushing for an automobile transmission device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a limit bushing for an automobile transmission device, comprising: a buffer mechanism, the buffer mechanism comprising a rubber sleeve, the inner wall of the rubber sleeve is provided with four positioning grooves in an annular array, one end of the rubber sleeve is provided with four slots in an annular array, the outer side of the rubber sleeve is provided with four installation grooves in an annular array, and the four installation grooves are provided with buffer springs, an inner liner is provided inside the rubber sleeve, four positioning blocks are provided in an annular array outside the inner liner, an anti-slip sleeve is provided on the outer side of the inner liner close to the positioning block, a threaded groove is provided on one end of the inner liner close to the slot, and a mounting mechanism is provided on the end of the rubber sleeve close to the threaded groove.

[0006] As a further preferred embodiment of the present technical solution, the installation mechanism includes a magnetic ring, the inner wall of the magnetic ring is provided with a threaded portion, and the threaded portion is threadedly connected to the thread groove.

[0007] As a further preferred embodiment of the present technical solution, magnetic blocks are docked in the four slots, and the buffer spring is docked in the installation groove.

[0008] As a further preferred embodiment of the present technical solution, a transmission shaft is butted against the inner surface of the inner liner tube, and the outer portion of the inner liner tube is butted against a rubber sleeve.

[0009] As a further preferred embodiment of the present technical solution, one side of the positioning block is fixedly connected to the outside of the liner pipe, and the outer surface of the positioning block is slidably connected to the inner wall of the positioning groove.

[0010] As a further preferred embodiment of the present technical solution, the inner surface of the anti-slip sleeve is nested in the outer surface of the liner pipe.

[0011] As a further preferred embodiment of the present technical solution, the outer surface of the anti-slip sleeve is in contact with the inner surface of the rubber sleeve.

[0012] The utility model provides a limiting bushing for an automobile transmission device, which has the following beneficial effects:

[0013] (1) The utility model can release the impact force generated by the collision by means of the buffer spring sheet provided in the installation groove opened by the rubber sleeve, thereby ensuring that the inner liner tube and the transmission shaft rod will not be damaged by the impact. In addition, the magnetic block can be sucked out of the slot by the magnetic attraction ring, and then the buffer spring sheet in the installation groove can be replaced, thereby ensuring the overall buffering effect of the buffer mechanism.

[0014] (2) The utility model uses a threaded connection between a threaded portion on the inner wall of the magnetic attraction ring and a threaded groove on one end of the inner liner tube, and then the magnetic attraction ring is installed on the inner liner tube to limit the position of the magnetic block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of a limit bushing structure used for an automobile transmission device.

[0016] Figure 2 The utility model is a schematic structural diagram of a disassembled side surface of a limit bushing buffer mechanism and a mounting mechanism for an automobile transmission device.

[0017] Figure 3 The utility model is a schematic structural diagram of a disassembled side surface of a limit bushing buffer mechanism for an automobile transmission device.

[0018] Figure 4 The utility model is a schematic structural diagram of the side surface of a limit bushing installation mechanism for an automobile transmission device.

[0019] In the figure: 1, buffer mechanism; 11, rubber sleeve; 12, positioning groove; 13, slot; 14, mounting groove; 15, buffer spring; 16, liner tube; 17, positioning block; 19, anti-slip sleeve; 110, threaded groove; 111, magnetic block;

[0020] 2. Mounting mechanism; 21. Magnetic ring; 23. Threaded portion;

[0021] 31. Transmission shaft. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 1-Figure 4 As shown, in this embodiment, a limit bushing for an automobile transmission device includes: a buffer mechanism 1, the buffer mechanism 1 includes a rubber sleeve 11, the inner wall of the rubber sleeve 11 is provided with four positioning grooves 12 in an annular array, one end of the rubber sleeve 11 is provided with four slots 13 in an annular array, the outer ring array of the rubber sleeve 11 is provided with four mounting grooves 14, the four mounting grooves 14 are provided with buffer springs 15, the four slots 13 are docked with magnetic blocks 111, the buffer springs 15 are docked in the mounting grooves 14, the rubber sleeve 11 is provided with an inner liner 16, and the inner surface of the inner liner 16 is docked with a transmission shaft 31 The outside of the inner liner tube 16 is docked in the rubber sleeve 11, and four positioning blocks 17 are arranged in a circular array on the outside of the inner liner tube 16. One side of the positioning block 17 is fixedly connected to the outside of the inner liner tube 16, and the outer surface of the positioning block 17 is slidably connected to the inner wall of the positioning groove 12. An anti-slip sleeve 19 is arranged on the side of the outside of the inner liner tube 16 close to the positioning block 17. The inner surface of the anti-slip sleeve 19 is nested in the outer surface of the inner liner tube 16, and the outer surface of the anti-slip sleeve 19 is in contact with the inner surface of the rubber sleeve 11. A threaded groove 110 is provided at one end of the inner liner tube 16 close to the slot 13, and a mounting mechanism 2 is provided at one end of the rubber sleeve 11 close to the threaded groove 110.

[0024] In this embodiment, if other parts on the transmission device collide with the transmission shaft 31, they will first contact the rubber sleeve 11, and the rubber sleeve 11 will buffer the shaft to release part of the impact force caused by the collision. The rubber sleeve 11 has elasticity and flexibility, and can effectively absorb the impact force and disperse it, thereby reducing the impact on the shaft. In addition, the buffer spring 15 provided in the installation groove 14 of the rubber sleeve 11 can further buffer the remaining impact force, thereby ensuring that the inner liner tube 16 and the transmission shaft 31 will not be damaged by the impact. When the inner liner tube 16 is docked on the rubber sleeve 11, the inner lining tube 16 can be positioned and limited in the rubber sleeve 11 by the positioning block 17 and the positioning groove 12, so as to prevent the outer part of the inner lining tube 16 from sliding inside the rubber sleeve 11. In addition, when the anti-slip sleeve 19 fixedly connected to the outer part of the inner lining tube 16 contacts the inner wall of the rubber sleeve 11, a strong friction force will be generated to ensure that the inner lining tube 16 will not slip out after being docked in the rubber sleeve 11. When the buffer spring piece 15 may need to be replaced after being used for a long time, the magnetic block 111 can be sucked out of the slot 13 by the magnetic attraction ring 21, and then the buffer spring piece 15 in the mounting groove 14 can be replaced.

[0025] like Figure 1-Figure 4As shown, the installation mechanism 2 includes a magnetic ring 21 , and a threaded portion 23 is formed on the inner wall of the magnetic ring 21 . The threaded portion 23 is threadedly connected to the thread groove 110 .

[0026] In this embodiment, the magnetic ring 21 has a strong magnetic force. When the magnetic block 111 needs to be fixed in the slot 13, the threaded portion 23 opened on the inner wall of the magnetic ring 21 can be threadedly connected with the threaded groove 110 opened at one end of the inner lining tube 16, and then the magnetic ring 21 will be installed on the inner lining tube 16 to limit the magnetic block 111.

[0027] The utility model provides a limiting bushing for an automobile transmission device, and the specific working principle is as follows:

[0028] When other parts of the transmission device collide with the transmission shaft 31, they will first contact the rubber sleeve 11, and the rubber sleeve 11 will buffer part of the impact force on the shaft, thereby reducing damage to the shaft. In addition to the buffering effect of the rubber sleeve 11, a buffer spring 15 is also provided in the installation groove 14 of the rubber sleeve 11. The buffer spring 15 can further buffer the remaining impact force to ensure that the inner liner tube 16 and the transmission shaft 31 will not be damaged by the impact. When the inner liner tube 16 is docked in the rubber sleeve 11, the positioning block 17 and the positioning groove 12 can realize the positioning and limiting of the inner liner tube 16 in the rubber sleeve 11, ensuring that the inner liner tube 1 6 Maintain the correct position during the transmission process, and suck the magnetic block 111 out of the slot 13 through the magnetic ring 21. The design of the magnetic ring 21 uses magnetic force to absorb the magnetic block 111, so that the magnetic block 111 can be easily taken out of the slot 13, and then the buffer spring 15 in the installation slot 14 can be replaced. The threaded portion 23 opened on the inner wall of the magnetic ring 21 is threadedly connected with the threaded groove 110 opened at one end of the inner liner tube 16, so that the magnetic ring 21 can be installed on the inner liner tube 16, and the magnetic block 111 is firmly fixed in the slot 13 by threaded connection, and the magnetic block 111 will not loosen or fall off from the slot 13 due to vibration or other reasons.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A limit bushing for an automobile transmission device, characterized in that: include: A buffer mechanism (1), the buffer mechanism (1) comprising a rubber sleeve (11), the inner wall of the rubber sleeve (11) being provided with four positioning grooves (12) in an annular array, one end of the rubber sleeve (11) being provided with four slots (13) in an annular array, the outer surface of the rubber sleeve (11) being provided with four installation grooves (14) in an annular array, each of the four installation grooves (14) being provided with a buffer spring sheet (15), the inner surface of the rubber sleeve (11) being provided with an inner liner (16), the outer surface of the inner liner (16) being provided with four positioning blocks (17) in an annular array, the outer side of the inner liner (16) being provided with an anti-slip sleeve (19) on one side close to the positioning block (17), the inner liner (16) being provided with a threaded groove (110) at one end close to the slot (13), and the end of the rubber sleeve (11) being provided with a mounting mechanism (2).

2. The limiting bushing for an automobile transmission device according to claim 1, characterized in that: The mounting mechanism (2) comprises a magnetic attraction ring (21), the inner wall of the magnetic attraction ring (21) is provided with a threaded portion (23), and the threaded portion (23) is threadedly connected to the thread groove (110).

3. The limiting bushing for an automobile transmission device according to claim 1, characterized in that: The four slots (13) are all butted with magnetic blocks (111), and the buffer spring sheet (15) is butted in the installation groove (14).

4. The limiting bushing for an automobile transmission device according to claim 1, characterized in that: The inner surface of the inner liner tube (16) is butt-jointed with a transmission shaft (31), and the outer portion of the inner liner tube (16) is butt-jointed with the rubber sleeve (11).

5. The limiting bushing for an automobile transmission device according to claim 1, characterized in that: One side of the positioning block (17) is fixedly connected to the outside of the inner liner tube (16), and the outer surface of the positioning block (17) is slidably connected to the inner wall of the positioning groove (12).

6. The limiting bushing for an automobile transmission device according to claim 1, characterized in that: The inner surface of the anti-slip sleeve (19) is nested in the outer surface of the liner tube (16).

7. The limiting bushing for an automobile transmission device according to claim 1, characterized in that: The outer surface of the anti-slip sleeve (19) contacts the inner surface of the rubber sleeve (11).

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