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Non-contact phase difference type torque sensing device

A torque sensing, non-contact technology, applied in the direction of measuring devices, torque measurement, power measurement, etc., can solve the problems of difficult wired connection sensors, high cost, complex signal transmission technology, etc., to achieve simple signal transmission, low cost, The effect of technical simplification

Pending Publication Date: 2021-07-16
大川电机科技(江苏)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the torque sensor is assembled on the central axis, which is a rotating part, it is difficult to realize it by connecting the sensor with a cable.
The strain gauge torque sensor responds to the change of the pedaling torque by collecting the deformation on the torsion bar, but there are technically complex problems in the installation of the strain gauge and signal transmission, and the cost is high

Method used

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  • Non-contact phase difference type torque sensing device
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  • Non-contact phase difference type torque sensing device

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Embodiment Construction

[0030] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] Such as figure 1 , figure 2 As shown, the non-contact phase difference torque sensing device of the present invention includes a central axis 1, a torsion bar 4, an input-side grating 5, an output-side grating 3, an output end and a sensor 8; pedals are respectively provided at both ends of the central axis 1, As a power input; such as figure 2 As shown, the torsion bar 4 is divided into two parts, one part is connected with the central shaft 1 through a spline, and the other part is connected with the output end. The part connected with the center shaft 1 is provided with an input-side grating 5, and the part connected with the clutch 9 or other output parts is provided with an output-side grating 3. The sensor 8 cooperates with the input-side grating 5 and the output-side grating 3 to detect the phase difference between the input...

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Abstract

The invention discloses a non-contact phase difference type torque sensing device which comprises a center shaft, a torsion bar, an output end, sensors and at least two gratings. The torsion bar sleeves the middle shaft, and one end of the torsion bar is connected with the output end; the at least two gratings are respectively arranged on the torsion bar at intervals; and each grating is correspondingly provided with a sensor which is used for detecting the phase difference between the gratings. Compared with a traditional phase difference sensor adopting a gear, the non-contact phase difference type torque sensing device has the advantages that the gratings are used for replacing the gear, non-contact measurement is achieved, the precision is high, and the signal transmission is easy and convenient. Compared with a strain gauge type torque sensor, wireless power supply and wireless signal transmission are not needed, the technology is simplified, and the cost is low. The device is wide in application field, and can be perfectly matched with various bicycles such as a bicycle with a front center shaft sensor, a motor-assisted bicycle with a middle torque, a motor-assisted bicycle with a rear motor and the like.

Description

technical field [0001] The invention relates to a torque sensing device, in particular to a non-contact phase difference torque sensing device. Background technique [0002] The most essential difference between a motorcycle and the "electric bicycle" currently understood in China is that most so-called electric bicycles in China have canceled the pedal design of the bicycle and have become "electric motorcycles", that is, "electric motorcycles (Electric Motorcycle)" , simply using electricity as a source of power, completely replacing manpower. Motorcycles are a hybrid operation mode of "human power + electric power". The addition of electric power is not to replace human power, but to strengthen human power. Therefore, if you do not step on the pedals, electric power cannot drive the vehicle forward alone. In addition, the biggest difference between motorcycles and "electric motorcycles" is that motorcycles are almost equivalent to bicycles in appearance. And after the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/08
CPCG01L3/08
Inventor 杜磊郑大松
Owner 大川电机科技(江苏)有限公司
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