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Electric Bicycle Torque Sensor

A torque sensor and electric bicycle technology, applied in the sensor field, can solve the problems of unreliable response and complex structure, and achieve the effect of reliable and practical signal and simplified structure.

Inactive Publication Date: 2015-12-23
ACTIVE CYCLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, the current electric bicycle torque sensor still has defects such as complex structure and unreliable response.

Method used

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  • Electric Bicycle Torque Sensor
  • Electric Bicycle Torque Sensor

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Experimental program
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Embodiment Construction

[0028] combine figure 1 with figure 2 The present invention is described in further detail.

[0029] An electric bicycle torque sensor, comprising an active part 8 capable of rotating around the bottom bracket axis, a passive part 5 arranged parallel to the active part 8 and axially fixed, the active part 8 and the passive part 5 in the circumferential direction It is elastically connected and can rotate at a certain angle, and also includes a magnetic assembly 4 and an induction assembly 3, the magnetic assembly 4 is fixed on the active part 8 and can move synchronously with the active part 8; the induction assembly 3 is fixed It is arranged on the passive part 5 and can move synchronously with the passive part 5; the magnetic assembly 4 includes several pairs of S-N magnetic pole pairs arranged in a ring, wherein the adjacent magnetic poles of each S-level or N-level are opposite magnetic poles , and one end of the magnetic pole faces the center of the ring, and the induc...

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Abstract

The invention discloses an electric bicycle torque sensor. A drive part and a driven part in the torque sensor are elastically connected in the circumferential direction and can relatively rotate within a certain angle. A magnetic assembly is fixedly arranged on the driving part and can synchronously move with the driving part. A sensing assembly is fixedly arranged on the driven part and can synchronously move with the driven part. The magnetic assembly comprises multiple pairs of S-N magnetic poles which are annularly arranged, each S or N magnetic pole is adjacent to one opposite magnetic pole, and one ends of the magnetic poles face the annular center. The sensing assembly can cut magnetic force lines generated by the magnetic poles in the motion process, produce eddy electric signals and output the electric signals, and the electric signals are sensed by the sensor so that the rotating speed of a motor is finally controlled by a controller. The traditional structure adopting a drive magnetic ring and a driven magnetic ring is changed, the structure of the torque sensor is simplified, and the signals are reliable and practical.

Description

technical field [0001] The invention relates to a sensor, in particular to a torque sensor for an electric bicycle. Background technique [0002] Electric bicycles currently on the market are generally equipped with a torque sensor, which is used to convert the force applied by the rider to the pedals into an electrical signal that can be recognized by the electric bicycle controller, so as to control the output power of the motor and achieve a boosting effect. At present, the common working mode of the torque sensor is: the manpower pedals the pedal to drive the chainring crank, the sensor disk and the bottom bracket axis to rotate relative to the frame, while the sensor probe is fixed relative to the frame. When the sensor disk rotates, the disk The magnetic poles in the pole will generate a changing magnetic field, and the changing magnetic field will continuously send signals to the sensor probe, and the sensor probe will process the obtained signal and transmit it to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L3/00
Inventor 李邦欣
Owner ACTIVE CYCLES