Bicycle crankset with variable resisting arm

A resistance arm and bicycle technology, applied in vehicle components, vehicle gearboxes, chain/belt drives, etc., can solve the problem that the crankset cannot automatically change the length value of the resistance arm independently, so as to achieve smooth and smooth force generation and fast rotation speed. , the effect of easy riding

Inactive Publication Date: 2017-01-18
张元东
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Technical problem to be solved: In order to overcome the deficiency that the existing bicycle crankset cannot automatically change the length value of the resistance arm independently, the present invention provides a crankset t

Method used

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  • Bicycle crankset with variable resisting arm
  • Bicycle crankset with variable resisting arm
  • Bicycle crankset with variable resisting arm

Examples

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Example Embodiment

[0026] In the first stage, turn the variable resistance arm crankset 1 counterclockwise, from image 3 Start at zero o'clock as shown, that is, point V starts to rotate counterclockwise, and at this moment, the force point of the crankset and chain 30 resistance is H1. like Figure 4 As shown, the force distance O-H1 and the resistance arm O-P1, the length of the resistance arm O-P1 has passed the longest resistance arm O-P5 in the previous standard arc area, starting from the beginning of the smooth transition area, point A The transition to O-P1 becomes shorter, at which point power starts to turn that crankset. According to the formula: power arm*power=resistance arm*resistance, it can be known that the shorter resistance arm O-P1 is less labor-saving. Figure 5 shown. The resistance arm is gradually increased from O-P1 in the previous smooth transition zone to the maximum resistance arm O-P2 in the standard arc zone, such as Image 6 shown. Starting from point V, turn...

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Abstract

The invention provides a bicycle crankset with a variable resisting arm. According to the crankset, gear teeth with resistance strength moments having different lengths and gear teeth having equal strength moments are arranged in a smooth transition area; the strength moment is a straight-line distance from the intersection of the center line of a crankshaft and the crankset plane, namely the center point of the crankset, to the strength point of the crankset and a chain; the strength point of each gear tooth in the transition area and the chain along with rotating has resistance arms with different lengths; in the rotating process of gear teeth of resistance arms having different lengths, resistance arms having different lengths can be transformed, and are effectively matched with power arms at different phases, so that a bicycle can be ridden in a labor saving way, and power is generated smoothly; and in a case that other conditions are the same, a bicycle which is provided with the crankset with the same circumference has a high speed on a level road and is labor-saving on an upslope.

Description

technical field [0001] The invention relates to a bicycle device, in particular to a force distance and a resistance arm thereof which can automatically change the resistance of the tooth plate when rotating. Background technique [0002] Currently known bicycles, the chainrings are circular, and the chainrings have only a fixed radius value. No matter where the chainrings rotate to any position, the chain and the resistance arm at the point of force of the chainrings are fixed. The disc cannot change the length value of the resistance arm. Contents of the invention [0003] Technical problem to be solved: In order to overcome the deficiency that the existing bicycle crankset cannot automatically change the length value of the resistance arm independently, the present invention provides a crankset that can change the force distance and the length value of the resistance arm. It rotates under the action of human pedaling, and can automatically change the force distance and...

Claims

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Application Information

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IPC IPC(8): B62M9/00
CPCB62M9/00
Inventor 不公告发明人
Owner 张元东
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