Rotation angle detection sensor, torque detection sensor, and power transmission device

A technology of rotation angle detection and power transmission device, which is applied in the direction of measurement device, force/torque/work measurement instrument, torque measurement, etc., which can solve the problem that the strain gauge cannot detect the rotation angle input to the flexible external gear.

Pending Publication Date: 2021-06-18
NIDEC SHIMPO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the conventional structure, the strain gauge itself cannot detect the rotational angle input to the rotational motion of the flexible external gear

Method used

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  • Rotation angle detection sensor, torque detection sensor, and power transmission device
  • Rotation angle detection sensor, torque detection sensor, and power transmission device
  • Rotation angle detection sensor, torque detection sensor, and power transmission device

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Embodiment Construction

[0022] Hereinafter, illustrated embodiments of the present application will be described with reference to the accompanying drawings. In addition, in this application, the direction parallel to the central axis of the power transmission device is called "axial direction", the direction perpendicular to the central axis of the power transmission device is called "radial direction", and the direction along the power transmission The direction of the arc centered on the central axis of the device is referred to as the "circumferential direction". However, the above-mentioned "parallel direction" also includes substantially parallel directions. In addition, the above-mentioned "vertical direction" also includes a substantially vertical direction.

[0023]

[0024] figure 1 It is a longitudinal sectional view of the power transmission device 1 of the first embodiment. figure 2 From figure 1 A cross-sectional view of the power transmission device 1 viewed from position A-A of...

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Abstract

The invention provides a rotation angle detection sensor, a torque detection sensor, and a power transmission device. The rotation angle detection sensor includes a substrate having a conductor layer. The conductor layer includes: a plurality of first resistance line patterns arranged at equal intervals in the circumferential direction; and a plurality of second resistance line patterns which are concentric with the first resistance line pattern and are arranged at equal intervals in a region where the first resistance line pattern is not arranged in the circumferential direction. The first resistance line pattern is a pattern in which first resistance lines extending in either the radial direction or the circumferential direction are connected in series. The second resistance line pattern is a pattern in which second resistance lines extending in either the radial direction or the circumferential direction are connected in series. On the basis of changes in the resistance values of the first resistance line pattern and the second resistance line pattern, it is possible to detect the rotational angle input to the rotational motion of the circular body.

Description

technical field [0001] The present invention relates to a rotation angle detection sensor, a torque detection sensor and a power transmission device. Background technique [0002] In recent years, the demand for reducers mounted on the joints of robots, etc. has increased rapidly. About the conventional speed reducer, it describes in Unexamined-Japanese-Patent No. 2004-198400, for example. In this publication, a strain gauge is attached to a flexible externally toothed gear rotating at a decelerated rotational speed. Thereby, the torque applied to the flexible external gear can be detected. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2004-198400 [0004] However, the flexible external gear used in this type of reducer undergoes repeated periodic deflection deformation. Therefore, the output value of the strain gauge contains a component caused by the torque to be measured originally and an error component caused by the periodic deformation of the flexible e...

Claims

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Application Information

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IPC IPC(8): G01B7/30G01L3/10G01L5/00G01P13/00
CPCG01B7/30G01L3/108G01L5/0066G01P13/00
Inventor 高木大辅I·戈德莱尔
Owner NIDEC SHIMPO CORP
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