Folding bicycle in variable speed

A bicycle and foldable technology, applied to foldable bicycles, bicycles, motor vehicles, etc., can solve the problems of affecting riding safety, inconvenient to carry upstairs, occupying a large space, etc., and achieve convenient and fast folding and unfolding. Safe and reliable operation, simple and reasonable structure

Inactive Publication Date: 2007-02-21
朱贤安
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Bicycle is a green and environment-friendly means of transport that is widely loved by people, but when it is not needed to ride, it takes up a lot of space, especially for some residents with higher floors. , it is inconvenient to carry upstairs, if it is folded, it can greatly save the space and is easy to carry, so the folding bicycle came into being
At present, folding bicycles or folding bicycles with variable speed function generally adopt the method of fixing with bolts. When in use, when the bicycle is adjusted to the use state structure, the bolts need to be manually tightened to fix the frame structure. Manually loosen the bolts again, which is time-consuming and labor-intensive. At the same time, the bolts will loosen due to the bolts not being tightened or the bumps and vibrations during bicycle riding, which will affect the safety of riding.

Method used

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  • Folding bicycle in variable speed
  • Folding bicycle in variable speed

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Embodiment Construction

[0014] Such as figure 1 A variable speed folding bicycle shown has a frame 1, a front fork 2 is fixedly arranged in front of the frame, a handlebar 3 is arranged above the front fork, a front wheel 4 is arranged below, and a rear wheel 4 is arranged behind the frame 1. The rear wheel 5 is provided with a stool 6 on the top of the vehicle frame 1, a speed change ratchet 7 is provided on the rotating shaft of the rear wheel 5, and a speed change control device 8 is provided on the handlebar 3. The vehicle frame 1 is composed of an upper beam 1- 1. The lower beam 1-2, the front pillar 1-3 and the rear fork 1-4 are composed of the upper beam 1-1, the front pillar 1-3, the lower beam 1-2, and the rear fork 1-4 to form a quadrilateral structure and each connection point is flexibly connected, the front pillars 1-3 are fixedly connected with the front fork 2; the stool support column 9 is arranged below the stool 6, and the upper end of the stool support column 9 is fixedly connected...

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PUM

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Abstract

A foldable speed-varying bicycle is composed of a quadrangular frame consisting of upper and lower beams, front tube and back fork, which are linked in movable mode, front fork, saddle and its supporting tube, etc. Said back fork comprises upper and lower segments which are linked via a folding unit.

Description

technical field [0001] The invention relates to the technical field of bicycles, in particular to a variable-speed folding bicycle. Background technique [0002] Bicycle is a green and environment-friendly means of transport that is widely loved by people, but when it is not needed to ride, it takes up a lot of space, especially for some residents with higher floors. , it is more inconvenient to carry upstairs, if it is folded, it can greatly save the space and is easy to carry, and the foldable bicycle has just emerged at the historic moment. At present, folding bicycles or folding bicycles with variable speed function generally adopt the method of fixing with bolts. When in use, when the bicycle is adjusted to the use state structure, the bolts need to be manually tightened to fix the frame structure. Manually unscrewing the bolts again takes time and effort, and at the same time, because the bolts are not tightened or the bolts are loosened due to bumps and vibrations du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62K15/00
Inventor 朱贤安
Owner 朱贤安
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