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Shift chain puller for speed-changing bicycle

A technology for variable speed bicycles and chain rings, applied in bicycle accessories, bicycle gear transmission mechanisms, transportation and packaging, etc., can solve the problems of durability, component damage, chain moving to other sprockets, etc., and achieve simple structure and durable use Convenient, easy-to-replace effect

Inactive Publication Date: 2010-10-06
李明东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is necessary for the chain ring to move the transmission chain to shift gears, turn the cable driver, and the cable driver drives the chain ring to move laterally to one side of the chain to move the chain to another sprocket, and the chain ring is locked at this time. , which is fixed by a cable and a return spring. When the chain is under a large force, the return spring will expand and contract, which will easily cause the chain to move to other sprockets, so the lock of the chain link is not firm; in addition, due to its The derailleur ring is a closed ring set outside the chain, so it is not easy to replace and maintain the chain; this kind of shifting bicycle shifting derailleur device will also cause component damage because the derailleur ring is not locked firmly, so it is not durable

Method used

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  • Shift chain puller for speed-changing bicycle
  • Shift chain puller for speed-changing bicycle
  • Shift chain puller for speed-changing bicycle

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0013] figure 1 , figure 2 The shown variable speed bicycle gear shifting device has a guide rod 1, and the guide rod 1 is movably installed in a hole-shaped guide rod channel on the upper part of a carriage 3, and a guide rod parallel to the bottom of the carriage 3 is also provided. The hole-shaped driving rod channel of the guide rod channel is movably equipped with the driving rod 2 in the driving rod channel, and a pin hole connecting the guide rod channel and the driving rod channel is provided in the carriage 3, and a cylinder is installed in the pin hole. The pin 4 of body structure, the diameter of pin 4 is greater than the length of pin hole. The guide rod 1 is provided with 5 grooves opening downward toward the bottom of the pin 4 , and the driving rod 2 is provided with 2 grooves opening upward toward the top of the pin 4 . The lower end of the slide f...

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PUM

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Abstract

The invention discloses a shift chain-moving device of a geared bicycle, wherein, the chain-moving ring is fixed on a sliding bracket which is moveably sheathed on a fixed guide bar and a drive pull rod. The sliding bracket is provided with a pin hole which communicates the channel of the guide bar and the channel of the drive pull rod. A moveable pin is installed in the pin hole. Both the guide bar and the drive pull rod are provided with a plurality of notches on the side facing the pin. The drive pull rod is connected with an inhaul cable drive by an inhaul cable. By applying the shift chain-moving device of the invention to the geared bicycle, the problems of loose shift and self-lock as well as inconvenient chain replacement can be solved; furthermore, the shift chain-moving device has the advantages of stability, durability and convenient use.

Description

technical field [0001] The invention relates to the technical field of bicycles, in particular to a device for moving a transmission chain in a variable-speed bicycle in which the transmission ratio is changed by switching the transmission chain between sprocket sets of different gear ratios. Background technique [0002] At present, the variable speed bicycle shifting chain device used by people is connected to a drag cable by a drag cable driver mounted on the handle, and the drag cable passes through the guide fixing part and the shift chain ring mounted on the bicycle frame. To connect, the shifting chain ring is also equipped with a return spring, and the shifting chain ring is ring-shaped and sleeved outside the transmission chain. When it is necessary for the chain ring to move the transmission chain to shift gears, turn the cable driver, and the cable driver drives the chain ring to move laterally to one side of the chain to move the chain to another sprocket, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M25/02
Inventor 李明东
Owner 李明东
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