Constant mesh gear speed change device

A constant meshing and gear technology is applied in the field of constant meshing gear shifting devices, which can solve the problems of large structure and difficult operation, and achieve the effects of compact structure, easy clutching and strengthening strength.

Inactive Publication Date: 2016-09-21
石幸运
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the shifting range and effect of the bicycle, the inventor is constantly exploring the central shaft transmission of the bicycle. If the existing two-axis gear transmission is used for shifting, the structure is huge and the operation is difficult. The two gears are shifted without disengagement, and a new speed change device is developed for the development of a small and reliable new bicycle center shaft transmission

Method used

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  • Constant mesh gear speed change device

Examples

Experimental program
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Effect test

Embodiment 1

[0014] With reference to the attached drawings, a gear shifting device with constant meshing is provided with bearings 2 at both ends of the driving shaft 1 and the driven shaft 10, and a driven gear 9 is fixed on the driven shaft 10, and fixed on the driving shaft 1. A fixed sleeve 3 is provided, a clutch ratchet 6 of the fixed sleeve is provided at one end of the fixed sleeve 3, a driving gear 4 is set on the sleeve of the fixed sleeve 3, and a driving gear is arranged on the end face of the driving gear 4 The clutch pawl 5 of the driving gear, the driving gear 4 and the driven gear 9 are in a constant mesh state, and under the action of the spring 7, the clutch pawl 5 of the driving gear and the clutch ratchet 6 of the fixed sleeve are in a constant separation state. The shaft 1 rotates but the driving gear 4 does not rotate, and the driven gear 9 and the driven shaft 10 also do not rotate. Under the action of the external force pushing the shift fork 8, the clutch pawl 5 of...

Embodiment 2

[0016] With reference to the attached drawings, a gear shifting device with constant meshing is provided with bearings 2 at both ends of the driving shaft 1 and the driven shaft 10, and a driven gear 9 is fixed on the driven shaft 10, and fixed on the driving shaft 1. A fixed sleeve 3 is provided, a clutch ratchet 6 of the fixed sleeve is provided at one end of the fixed sleeve 3, a driving gear 4 is set on the sleeve of the fixed sleeve 3, and a driving gear is arranged on the end face of the driving gear 4 The clutch pawl 5 of the driving gear, the driving gear 4 and the driven gear 9 are in a constant mesh state, and under the action of the spring 7, the clutch pawl 5 of the driving gear and the clutch ratchet 6 of the fixed sleeve are in a constant separation state. The shaft 1 rotates but the driving gear 4 does not rotate, and the driven gear 9 and the driven shaft 10 also do not rotate. Under the action of the external force pushing the shift fork 8, the clutch pawl 5 of...

Embodiment 3

[0018] With reference to the attached drawings, a gear shifting device with constant meshing is provided with bearings 2 at both ends of the driving shaft 1 and the driven shaft 10, and a driven gear 9 is fixed on the driven shaft 10, and fixed on the driving shaft 1. A fixed sleeve 3 is provided, a clutch ratchet 6 of the fixed sleeve is provided at one end of the fixed sleeve 3, a driving gear 4 is set on the sleeve of the fixed sleeve 3, and a driving gear is arranged on the end face of the driving gear 4 The clutch pawl 5 of the driving gear, the driving gear 4 and the driven gear 9 are in a constant mesh state, and under the action of the spring 7, the clutch pawl 5 of the driving gear and the clutch ratchet 6 of the fixed sleeve are in a constant separation state. The shaft 1 rotates but the driving gear 4 does not rotate, and the driven gear 9 and the driven shaft 10 also do not rotate. Under the action of the external force pushing the shift fork 8, the clutch pawl 5 of...

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Abstract

The invention discloses a constant mesh gear speed change device and relates to a gear speed changer. According to the constant mesh gear speed change device, driven gears are fixedly arranged on a driven shaft, and fixed sleeves are fixedly arranged on a driving shaft; one ends of the fixed sleeves are provided with clutch ratchets of the fixed sleeves, and sleeve bodies of the fixed sleeves are sleeved with driving gears; the end surfaces of the driving gears are provided with clutch pawls of the driving gears, and the driving gears and the driven gears are in a constant mesh state; and the clutch pawls of the driving gears and the clutch ratchets of the fixed sleeves are in a constant separating state under the action of a spring; at the moment, the driving shaft is rotated, the driving gears are not rotated, and the driven gears and the driven shaft are not rotated either; a shifting fork is pushed under the action of external force, the clutch pawls of the driving gears and the clutch ratchets of the fixed sleeves are in a constant mesh state, at the moment, the driving shaft rotates and drives the driving gears to rotate, and the driven gears and the driven shaft are rotated too. The constant mesh gear speed change device is small and exquisite in structure, separating and meshing are easy, gear breaking is avoided, and achieving of a miniature gearbox of a bicycle center shaft is facilitated.

Description

technical field [0001] The present invention relates to a gear transmission, and more particularly to a constant mesh gear transmission device in a bicycle. Background technique [0002] Gear transmissions are widely used in machinery. In the existing two-shaft gear transmission, in order to achieve speed change, it is necessary to continuously toggle the paired gears for meshing and separation, and at the same time, it is difficult to synchronize when the paired gears are meshing. At present, the speed change of bicycle mostly adopts the different pairing of the chain disc on the central shaft and the tooth disc on the rear axle to change speed, and its transmission speed ratio range is small. In order to improve the shift range and effect of the bicycle, the inventor is constantly exploring the central shaft transmission of the bicycle. If the existing two-axis gear transmission is used for shifting, the structure is huge and the operation is difficult. The two gears are...

Claims

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Application Information

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IPC IPC(8): B62M11/04
CPCB62M11/04
Inventor 石宗泽
Owner 石幸运
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