Gear shifting flexible shaft assembly for automobile

Abstract

The gear shifting flexible shaft assembly for the automobile comprises a steel wire rope, and a protection pipe is arranged in the middle of the steel wire rope in a sleeved mode. A first protective pipe joint and a second protective pipe joint are arranged at the two ends of the protective pipe respectively, and the protective pipe is sleeved with a non-woven fabric pipe; the first protective pipe joint is connected with a first guide pipe; the other end of the first guide pipe is connected with a first pull rod; the second protective pipe joint is connected with a second guide pipe; the other end of the second guide pipe is connected with a second pull rod; a dustproof sleeve is arranged outside the second guide pipe and the second pull rod; the end of the first pull rod is connected with a first ball head, the end of the second pull rod is connected with a second ball head, and the first ball head and the second ball head are connected through a steel wire rope. The utility model has the advantages of simple structure, high transmission efficiency and good dustproof effect.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile gear shifting, and more specifically to a gear shifting flexible shaft assembly for an automobile. Background Art

[0002] The function of the shift shaft assembly is to transmit the force and displacement of the operating mechanism to the gearbox to achieve gear change.

[0003] At present, some automobile speed control systems use mechanical hard rod type control mechanisms. Hard rod type control systems mostly use hollow rods as the main force transmission components, which are complex in structure and have many parts. In addition, the friction between the connecting mechanisms and the deadweight of the rods themselves will increase the resistance during the gear selection and shifting operation. Then, pure flexible shaft speed control systems appeared and developed rapidly. Pure flexible shaft speed control systems are not only simple in structure, easy to operate, and reliable, but also very easy to arrange, easy to install and maintain, and not affected by frame deformation and automobile vibration. They also have certain advantages in cost control. However, in the existing pure flexible shaft speed control systems, impurities such as dust are prone to enter the flexible shaft assembly, causing the transmission efficiency of the gear selection and shifting flexible shaft to be low, resulting in reduced comfort when using the pure flexible shaft speed control system.

[0004] Therefore, there is an urgent need for a flexible gear shift shaft assembly for an automobile. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a flexible gear shift shaft assembly for an automobile, so as to solve the problems in the background technology.

[0006] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0007] A gear shift flexible shaft assembly for automobiles, including a steel wire rope, a protective tube for ensuring the direction of the steel wire rope is sleeved in the middle of the steel wire rope; a first protective tube joint and a second protective tube joint are respectively provided at both ends of the protective tube, and a non-woven fabric tube is provided outside the protective tube; the first protective tube joint is connected to a first guide tube, and the other end of the first guide tube is connected to a first pull rod; the second protective tube joint is connected to a second guide tube, and the other end of the second guide tube is connected to a second pull rod; dust covers are provided outside the second guide tube and the second pull rod; the end of the first pull rod is connected to a first ball head, the end of the second pull rod is connected to a second ball head, and the first ball head and the second ball head are connected by a steel wire rope.

[0008] To further optimize the technical solution, the protective tube and the first protective tube joint and the second protective tube joint are all riveted.

[0009] To further optimize the technical solution, the first pull rod and the second pull rod have the same diameter, the first guide tube and the second guide tube have the same diameter, and the first pull rod has a smaller diameter than the first guide tube.

[0010] To further optimize the technical solution, the diameter of the protective tube is smaller than the diameter of the first guide tube, and the diameter of the non-woven fabric tube is larger than the diameter of the first guide tube.

[0011] To further optimize the technical solution, the connection between the first ball head and the first pull rod, and the connection between the second ball head and the second pull rod are both threaded connections.

[0012] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0013] The utility model provides a flexible shaft assembly for automobile gear shift, which ensures the direction of the flexible shaft by setting a protective tube; prevents dust and moisture from entering the protective tube to affect the performance of the flexible shaft by setting a dust cover; and plays a certain protective role on the flexible shaft protective tube by setting a protective tube. The utility model has the advantages of simple structure, high transmission efficiency and good dustproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Among them: 11. first ball head, 12. second ball head, 21. first protective pipe joint, 22. second protective pipe joint, 3. protective pipe, 4. wire rope, 5. dust cover, 61. first pull rod, 62. second pull rod, 71. first guide tube, 72. second guide tube, 8. non-woven fabric tube. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] A gear shift flexible shaft assembly for an automobile, combined with Figure 1 As shown, it includes a first ball head 11, a second ball head 12, a first protective pipe joint 21, a second protective pipe joint 22, a protective pipe 3, a wire rope 4, a dust cover 5, a first pull rod 61, a second pull rod 62, a first guide tube 71, a second guide tube 72, and a non-woven fabric tube 8.

[0018] The middle part of the steel wire rope 4 is sleeved with a protective tube 3 to ensure the direction of the steel wire rope 4. The two ends of the protective tube 3 are respectively connected with a first protective tube joint 21 and a second protective tube joint 22, and the protective tube 3 and the first protective tube joint 21 and the second protective tube joint 22 are riveted.

[0019] The protective tube 3 is covered with a non-woven fabric tube 8, which can provide a certain degree of protection for the flexible shaft protective tube.

[0020] The first protective pipe joint 21 is connected to the first guide tube 71, and the other end of the first guide tube 71 is connected to the first pull rod; the second protective pipe joint 22 is connected to the second guide tube 72, and the other end of the second guide tube 72 is connected to the second pull rod 62; the first pull rod 61 and the second pull rod 62 have the same diameter, the first guide tube 71 and the second guide tube 72 have the same diameter, and the diameter of the first pull rod 61 is smaller than the diameter of the first guide tube 71.

[0021] The diameter of the protective tube 3 is smaller than that of the first guide tube 71 , and the diameter of the non-woven fabric tube 8 is larger than that of the first guide tube 71 .

[0022] A dust cover 5 is provided outside the second guide tube 72 and the second pull rod 62 to prevent dust and moisture from entering the protective tube and affecting the performance of the flexible shaft.

[0023] The end of the first tie rod 61 is connected to the first ball head 11, and the end of the second tie rod 62 is connected to the second ball head 12. The connection between the first ball head 11 and the first tie rod 61 and the connection between the second ball head 12 and the second tie rod 62 are both threaded connections. The first ball head 11 and the second ball head 12 are connected by a steel wire rope 4, and are also connected by the first tie rod, the second tie rod, the protective tube, the first guide tube, the second guide tube, etc.

[0024] When the utility model is actually used, lubricating oil is coated between the steel wire rope and the protective tube to ensure the flexibility of the movement and improve the transmission efficiency of the shifting flexible shaft assembly. The combination mode between the adjacent connected components in the assembly is riveting connection, and the first ball head and the second ball head at both ends are threaded connection. The protective tube is used to arrange the direction of the flexible shaft, and the first protective tube joint and the second protective tube joint are riveted at both ends to be connected and fixed to the vehicle body. The first ball head and the second ball head are connected to the shift rocker arm and the gearbox of the speed control system of the car to realize the shifting and speed changing.

Claims

1. A gear shift flexible shaft assembly for an automobile, characterized in that: The invention comprises a steel wire rope (4), wherein a protective tube (3) is sleeved in the middle of the steel wire rope (4) for ensuring the direction of the steel wire rope (4); a first protective tube joint (21) and a second protective tube joint (22) are respectively arranged at two ends of the protective tube (3), and a non-woven fabric tube (8) is arranged on the outer shell of the protective tube (3); the first protective tube joint (21) is connected to a first guide tube (71), and the other end of the first guide tube (71) is connected to a first pull rod (61); the second protective tube joint (22) is connected to a second guide tube (72), and the other end of the second guide tube (72) is connected to a second pull rod (62); a dust cover (5) is arranged outside the second guide tube (72) and the second pull rod (62); the end of the first pull rod (61) is connected to a first ball head (11), and the end of the second pull rod (62) is connected to a second ball head (12), and the first ball head (11) and the second ball head (12) are connected via the steel wire rope (4).

2. The automotive gear shift flexible shaft assembly according to claim 1, characterized in that: The protective pipe (3) and the first protective pipe joint (21) and the second protective pipe joint (22) are all riveted.

3. The automotive gear shift flexible shaft assembly according to claim 2, characterized in that: The first pull rod (61) and the second pull rod (62) have the same diameter, the first guide tube (71) and the second guide tube (72) have the same diameter, and the diameter of the first pull rod (61) is smaller than the diameter of the first guide tube (71).

4. The automotive gear shift flexible shaft assembly according to claim 3, characterized in that: The diameter of the protective tube (3) is smaller than the diameter of the first guide tube (71), and the diameter of the non-woven fabric tube (8) is larger than the diameter of the first guide tube (71).

5. The automotive gear shift flexible shaft assembly according to claim 4, characterized in that: The connection between the first ball head (11) and the first pull rod (61), and the connection between the second ball head (12) and the second pull rod (62) are both threaded connections.

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