torque sensor

Abstract

The invention provides a torque sensor, which relates to the technical field of detection devices, including an elastic body and a strain detection component; the elastic body includes an outer ring, an inner ring, a strain beam and a load beam; The shaft is set, the outer ring is used to connect with the base, and the inner ring is used to connect with the driving part of the input torque; the strain beam and the load beam are respectively connected to the inner ring and the outer ring, and the strain detection component is arranged on the strain beam, and the strain beam The cross-sectional area is smaller than that of the load-bearing beam. The outer ring of the elastic body is fixed on the base, and the inner ring is loaded by the driving part to cause strain on the load beam and the strain beam. Since the cross-sectional area of ​​the strain beam is smaller than that of the load beam, the deformation of the strain beam is relatively smaller than that of the load beam. The deformation needs to be large. Therefore, when the torque is detected by the strain detection component arranged on the strain beam, the loss of detection accuracy caused by the deformation error can be avoided, the detection accuracy of the torque sensor can be improved, and the high-precision detection requirements can be met.

Description

technical field [0001] The invention relates to the technical field of detection devices, in particular to a torque sensor. Background technique [0002] Torque sensors, also known as torque sensors, are used to measure one-dimensional torque physical quantities. Resistance strain sensor is the most widely used torque sensor at home and abroad. It adopts the traditional method of pasting strain gauges on the surface of elastic beams. When physical quantities such as torque act on the elastic beams, it will cause changes in the stress and strain of the components, which in turn will cause changes in the resistance of the strain gauges. The changes in resistance will be processed by the circuit. Signal output, this kind of sensor is widely used in the measurement of torque. [0003] However, due to the structure of the elastic beam of the known torque sensor, the detection accuracy of the torque sensor is relatively poor, which cannot meet the use requirements of high-precis...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a torque sensor to alleviate the technical problem that the existing torque sensor has poor detection accuracy due to the structure of the elastic beam and cannot meet the use requirements of high-precision detection

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