US 2022/0045579 A1 · SCREWING MACHINE AND TORQUE SENSOR

Abstract

A screwing machine includes a motor, an output shaft, a twist portion, a plate portion, a strain gauge, an amplification circuit. The output shaft is driven by the motor. To the output shaft, a bit is attachable. The twist portion is hollow. To the twist portion, torque applied to the output shaft is transmitted through a transmission element. The output shaft is configured to be indirectly twisted by the torque applied to the output shaft. The plate portion is integrally formed with the twist portion. The strain gauge is disposed on the twist portion. The amplification circuit is disposed on the plate portion. To the amplification circuit, a signal from the strain gauge is input.

Claims20

Dependent claims

A screwing machine comprising:

a motor;
an output shaft that is driven by the motor and to which a bit is attachable;
a twist portion that is hollow, to which torque applied to the output shaft is transmitted through a transmission element, and that is configured to be indirectly twisted by the torque applied to the output shaft;
a plate portion integrally formed with the twist portion;
a strain gauge disposed on the twist portion;
and
an amplification circuit that is disposed on the plate portion and to which a signal from the strain gauge is input.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/362,473Filed 29 Jun 2021

Priority

JP 2020-1340206 Aug 2020

Published

10 Feb 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H02K 11/02
Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection: for…
B25B 21/00
Portable power-driven screw or nut setting or loosening tools
B25B 23/147
Arrangement of torque limiters or torque indicators in wrenches or screwdrivers: specially adapted for electrically operated wrenches or screwdrivers
H02K 7/10
Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical…:…

Screwing machine and torque sensor

Life of this patent

Screwing machine and torque sensor

Life of this patent

Abstract

Claims20