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Neutral structure for bicycle

A bicycle and neutral technology, applied in the crank structure, vehicle components, vehicle gearbox, etc., can solve the problem of pedal crank backward and reverse, and achieve the effect of enhancing autonomy, ensuring normal operation, and ensuring riding safety.

Inactive Publication Date: 2011-07-20
卢一雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to solve the problem that the pedals and the crank of the two-wheeled vehicle will reverse backwards when the two-wheeled vehicle moves backwards by using the structural principle of simple neutral gear

Method used

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  • Neutral structure for bicycle
  • Neutral structure for bicycle
  • Neutral structure for bicycle

Examples

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Embodiment Construction

[0033] As shown in Fig. 1, it is an example of a folding two-wheeled vehicle to illustrate the appearance of the implementation state of the space structure 10 of this case. Components related to the neutral structure of this case include pedal 20, crank 21, front chainring set 30, rear chainring set 40, and chain 50.

[0034] As shown in FIGS. 2 to 4 , the neutral structure 10 in this case is an exploded perspective view and a cross-sectional view of the rear chainring set 40 . The rear chainring set 40 includes a plurality of transmission chainrings 41, the diameter and the number of teeth of the transmission chainrings 41 have step changes, each transmission chainring 41 is coaxially sleeved on a rotating assembly 42, and the rotating assembly 42 is pivotally sleeved At the end of a rear wheel hub 43 . The above-mentioned transmission chainring 41 , rotating assembly 42 , and rear wheel hub 43 have interlocking relationship with each other.

[0035] The feature of this ca...

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PUM

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Abstract

The invention relates to an neutral-gear structure of a bicycle; wherein, one fluted disc set is provided with the neutral-gear structure; the neutral-gear structure includes a free fluted disc and a bearing; the center of the free fluted disc is pivoted and sheathed on the rotating component of the fluted disc set by the bearing, which leads the rotating component to be in a corresponding relation of opposite bidirectional idle with the free fluted disc. The chain of a double-wheel bicycle can be switched on the fluted disc set and the free fluted disc by the control of a speed shifting unit. The speed shifting unit is set with a neutral position which showes that the chain is hung on the free fluted disc. The free fluted disc is additionally provided with a safety device; the safety device forms an interlocking relation between the free fluted disc and the fluted disc set.

Description

technical field [0001] The present invention relates to a bicycle structure, in particular to a neutral gear structure for a bicycle. Background technique [0002] The problem that users often face when pulling a bicycle is that when the bicycle is pulled backwards, the pedals and the crank will reverse backwards, and the pedals are likely to collide with foreign objects. If the user stands on the side of the bicycle, it will be reversed. There is a high chance of bruising your foot with crank pedals. [0003] Folding bicycles also face the above-mentioned problems. If the folded bicycle is to be moved backwards, the reversed pedals and cranks will inevitably jam the vehicle body, making the vehicle body unable to move and causing injury. [0004] The applicant has previously proposed a scheme of using a folding cart to set up a storage basket and a folding telescopic shelf. The above scheme enables the folded two-wheeled vehicle to be used as a storage trailer to play the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M3/00B62M9/10
Inventor 卢一雄
Owner 卢一雄
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