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Bicycle ergometer with sensor mounted on bicycle frame

A technology of bicycles and power meters, which is applied in the direction of power measurement, instruments, and measuring devices, and can solve problems such as expensive, difficult to install, and that bicycles are not widely accepted by cyclists.

Inactive Publication Date: 2014-11-26
硅谷微E股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Known bicycle power meters using strain gauges are relatively expensive and somewhat difficult to install while efficiently providing an electrical signal indicative of applied force
Due to these shortcomings, cycling power meters are not widely accepted by the cyclist community

Method used

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  • Bicycle ergometer with sensor mounted on bicycle frame
  • Bicycle ergometer with sensor mounted on bicycle frame
  • Bicycle ergometer with sensor mounted on bicycle frame

Examples

Experimental program
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Embodiment Construction

[0025] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0026] Turning now to the attached drawings, figure 1 is a partial perspective view from above the bicycle rear frame showing the fork rod ends, hub, chain and strain gauge sensor assembly of the first embodiment of the present invention. As shown, the bicycle rear frame has a pair of terminal portions called right fork bar 12 and left fork bar 14 . Secured between the forks 12 , 14 by means of the axle 16 and retaining nut 17 is a rear hub 20 and sprocket assembly 22 . A drive chain 24 is wound over the sprockets making up the sprocket assembly 22 to provide rotational movement of the hub 20 in response to the riding forces of a cyclist.

[0027] The end portion 26 , 28 of each prong 12 , 14 has a transverse thickness dimension that is thinner than the remaining major portion of each prong 12 , 14 . Secured to the inner surface of the end 26 of the right yoke 12 is a strain gauge sensor assembly 30 described in more...

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PUM

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Abstract

The invention provides a bicycle ergometer which is provided with a strainometer sensor component that is arranged on a relatively compressible part at the end part of a rear rod jaw of a bicycle frame , wherein the relatively compressible part is arranged next to a rear hub and bears the force applied by a bicycler on a crank set, and the force is transmitted to a hub through a chain and a sprocket wheel component; the sensor component comprises two tensile sensors which are in Ohm interconnection, wherein each sensor is provided with a first layer for bearing a variable resistor component and a second layer which is used for supporting the first layer, and the resistance of the variable resistor component changes with the displacement of the compressible part; and the sensor component is connected with another two resistors in a bridge circuit so as to generate signals standing for the applied force of the bicycler. The signals are processed together with the speed signals so as to generate power signals, and the power signals are provided to a display.

Description

Background of the invention [0001] The present invention relates to bicycle power meters used to indicate the amount of power expended by a cyclist during a ride. More specifically, the present invention relates to bicycle power meters that use rack-mounted sensors to allow the generation of electrical signals from which power is determined. [0002] Bicycle power meters are increasingly used by professional and amateur cyclists as a trial training aid. Several different kinds of bicycle dynamometers are available, some of which use strain gauges to measure the forces applied by the cyclist to the crankset, bottom bracket and rear hub. Known bicycle power meters using strain gauges are relatively expensive and somewhat difficult to install, while efficiently providing an electrical signal indicative of applied force. Because of these shortcomings, bicycle power meters have not been widely accepted by the cyclist community. Summary of the invention [0003] The present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L3/24
Inventor 朱生勃黄世雄
Owner 硅谷微E股份有限公司