Title:
CENTER SHAFT TORQUE PHOTOELECTRIC SENSOR STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/047138
Kind Code:
A1
Abstract:
A center shaft torque photoelectric sensor, comprising a center shaft (1). Cranks (2) are mounted respectively at either extremity of the center shaft (1). A torque sleeve (3) is sleeved on the center shaft (1). An inner end (31) of the torque sleeve (3) is fixedly connected to the center shaft (1). An outer end of the torque sleeve (3) is mounted with a crankset (4) and can rotate relative to the center shaft (1). A circuit board (8) is provided on a shaft sleeve (7). An inner-ring fence (9) is sleeved on the center shaft (1) in front of the inner end (31) of the torque sleeve (3). An outer-ring fence (10) is sleeved on the inner-ring sleeve (9). A tail end (101) of the outer-ring fence (10) is fixedly connected to a tail end of the torque sleeve (3). An inner fence plate (91) of the inner-ring fence (9) overlaps an outer fence plate (101) of the outer-ring fence (10). The inner and outer fence plates (91 and 101) are provided with a gap in the axial direction of the center shaft (1). A through-beam photoelectric sensor (12) is provided on the circuit board (8). The through-beam photoelectric sensor (12) is used for sensing a change in the gap between the inner fence plate (91) and the outer fence plate (101) when the torque sleeve (3) is distorted and distended by a force applied. The center shaft torque photoelectric sensor as a whole is structurally simple, inexpensive, and of great stability.
Inventors:
TANG MINGXI (CN)
Application Number:
PCT/CN2017/100980
Publication Date:
March 14, 2019
Filing Date:
September 08, 2017
Export Citation:
Assignee:
SHENZHEN EGEBIKE CO LTD (CN)
International Classes:
G01L3/12
Foreign References:
| CN107690572A | 2018-02-13 | |||
| JP2003335291A | 2003-11-25 | |||
| CN102980751A | 2013-03-20 | |||
| CN103487185A | 2014-01-01 | |||
| CN1480718A | 2004-03-10 | |||
| EP1376086A2 | 2004-01-02 |
Attorney, Agent or Firm:
D&S IP LAW FIRM (CN)
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