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Over-positioning elastic push-pull cable flexible shaft

An over-positioning and elastic technology, applied in the direction of the linear motion axis and so on

Inactive Publication Date: 2013-06-26
HANGZHOU BRANCH ZHEJIANG GEELY AUTOMOBILE RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]In order to overcome the defects of the poor elastic recovery ability of the flexible shaft of the existing push-pull cable, it will produce flexible bending after long-term use, which will reduce the force transmission efficiency and the positioning accuracy of selection / shifting , the invention provides an over-positioning elastic push-pull cable flexible shaft with elastic recovery ability, long-term maintenance of force transmission efficiency and positioning accuracy of selection / shifting

Method used

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  • Over-positioning elastic push-pull cable flexible shaft
  • Over-positioning elastic push-pull cable flexible shaft
  • Over-positioning elastic push-pull cable flexible shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, an over-positioning elastic push-pull cable flexible shaft is used for the gear selection of the transmission, including a cable head 1, a cable rod 2 and a spring 3, the cable head 1 is connected with the gear selection fork 8 of the transmission, and the cable The rod 2 is connected with the gear lever at the operating end, the cable head 1 and the cable rod 2 are split structures, and the two ends of the spring 3 are respectively provided with a spring coil fixed section 4, and the spring 3 in the spring coil fixed section 4 is in phase. Each adjacent turn is welded to each other to form a spiral tube with certain rigidity. One end of the cable head 1 and the cable rod 2 is respectively fixed with a connecting screw 5 adapted to the fixed section 4 of the spring coil, and the spring coils at both ends of the spring 3 are fixed. The segment 4 is screwed and connected with the connecting screw 5 of the cable head 1 and the cable rod 2 re...

Embodiment 2

[0024] Such as figure 2 As shown, one end of the cable head 1 and the cable rod 2 is respectively fixed with a steel spiral sleeve 6, and one end of the cable head 1 and the cable rod 2 is respectively provided with a flange, and the flange and the spiral sleeve 6 The end face of the bottom plate is connected by four bolts. The spiral sleeve 6 is cylindrical, one end of which is open, and the other end is closed by a bottom plate. The inner wall of the spiral sleeve 6 is provided with a spiral groove matching the spring 3 in the natural state. The inner diameter of the spring 3 in the state is adapted to the core rod 7, and the two ends of the spring 3 are respectively screwed and connected with the spiral sleeve 6 of the cable head 1 and the cable rod 2 in a thread-like manner and sleeved on the core rod 7. The core rod radially limits the spring turns, combined with the axial limit of the spiral grooves on the spring turns, so as to realize the fast and firm connecti...

Embodiment 3

[0026] Such as Figure 6 As shown, an over-positioning elastic push-pull cable flexible shaft includes a cable head 1, a cable rod 2 and a spring 3, and is simultaneously applied to the gear selection and shifting of the transmission, the gear selection fork 8 and the shift fork of the transmission The 9 is respectively connected with a root through positioning elastic push-pull cable flexible shaft, and two cross-position elastic push-pull cable flexible shafts are connected in parallel on the shift lever again. The plane of rotation of the shift fork 9 is perpendicular to the plane of rotation of the selector fork 8 . The process of driving the shift fork 9 through the flexible shaft of the positioning elastic push-pull cable is the same as the process of driving the shift fork 8, except that the plane where the movement is located is different. , that is, in the first, third and fifth gears, the shift fork 9 is pushed to the limit positioning position at one end by the...

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Abstract

The invention discloses an over-positioning elastic push-pull cable flexible shaft, comprising an inhaul cable head, an inhaul cable rod and a spring, wherein the inhaul cable head is connected with a gear selection shifting fork of a speed changer; the inhaul cable head and the inhaul cable rod are of split structures; and two ends of the spring are respectively connected with the inhaul cable head and the inhaul cable rod. The over-positioning elastic push-pull cable flexible shaft is connected between the gear selection shifting fork and a gear rod. The spring has strong elastic recovery capability, so that the over-positioning elastic push-pull cable flexible shaft formed by connecting the spring with proper force with the inhaul cable head and the inhaul cable rod can transmit force, has anti-deforming capability, and avoids irreversible changes of the overall size and shape even if large temporary deformation is generated. The over-positioning elastic push-pull cable flexible shaft is stable in property, long in service life, and small in injury on a speed changer positioning device during working.

Description

technical field [0001] The invention relates to an automobile transmission system component, more specifically, it relates to an over-positioning elastic push-pull cable flexible shaft. Background technique [0002] The push-pull cable flexible shaft is the main driving tool for the selection / shift of the manual gearbox of the car. When the car is running, people indirectly select / shift the transmission by pushing / pull the push-pull cable flexible shaft to realize the free shifting of the gearbox. Moreover, during the process of selecting / shifting, precise positioning must be achieved, so that the gear can be shifted normally, so a good push-pull cable flexible shaft is very important to prevent the problem of improper selection / shifting during the selection / shifting process , so as to achieve the purpose of smooth selection / shifting. Existing flexible shafts of push-pull cables are usually made of steel wire, which has weak elastic recovery ability. After long-term use, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C1/12F16C1/14
Inventor 沈剑峰汤天宝陈华罗大国陈勇赵福全
Owner HANGZHOU BRANCH ZHEJIANG GEELY AUTOMOBILE RES INST
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