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Definite torque power wrench

A power and wrench technology, applied in the direction of wrenches, screwdrivers, manufacturing tools, etc., can solve the problems of poor output torque detection accuracy, achieve the effect of reducing the complexity of the structure, simple structure, and reducing sensor components

Inactive Publication Date: 2018-07-17
ZHENGZHOU DONGCHEN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a constant torque power wrench to solve the problem of poor detection accuracy of the output torque of the torque output structure in the prior art

Method used

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  • Definite torque power wrench
  • Definite torque power wrench

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Embodiment Construction

[0024] Embodiment 1 of a fixed torque power wrench such as Figure 1~3 As shown: the power wrench in the present invention is an electric wrench, including a housing, and the front end of the housing is provided with a torque output structure for torque output. The power wrench includes a transmission mechanism, the transmission mechanism includes a front transmission wheel 3 and a rear transmission wheel 7 arranged on the front and rear coaxial lines, and the torque output structure is formed by an inner square hole 4 arranged on the front transmission wheel 3 . The rear transmission wheel 7 is connected to the front transmission wheel through a one-way transmission structure 6. The one-way transmission structure 6 in this embodiment is an end-face ratchet transmission structure. The end-face ratchet transmission structure belongs to the prior art. The ratchet on the wheel and the ratchet wheel that is arranged on the front transmission rear end face, when the rear transmissi...

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Abstract

The invention relates to a definite torque power wrench. The definite torque power wrench comprises a shell, the front end of the shell is provided with a torque output structure of which the rotationaxis extends in the front-back direction, a reacting force measuring arm is fixedly arranged on the shell and provided with a force detection structure which is used for being in force transmission fit with a corresponding fixing part so that the acting force borne by the reacting force measuring arm can be detected, and the force detection structure comprises a force sensor. Through the definitetorque power wrench, the problem that in the prior art, the detecting precision of the output torque of the torque output structure is poor is solved.

Description

technical field [0001] The invention relates to a constant torque power wrench in the field of electric tools. Background technique [0002] As a common torque tool, power wrench is frequently used. One of the power wrenches that can achieve constant torque output is also called constant torque power wrench. The existing fixed-torque power wrench includes a housing on which a motor is a power source. The front end of the housing is provided with a sleeve rod connected to the motor through a transmission mechanism. The sleeve rod is used as a torque output structure for outputting torque. In order to realize the output of constant torque, the power wrench has a torque detection part. The torque detection part detects the output torque of the torque output structure, so as to stop the power output when the specified torque is reached. The torque detection part of the existing fixed torque power wrench is basically through It is realized by detecting the current of the power w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/147
CPCB25B23/147
Inventor 尚廷东
Owner ZHENGZHOU DONGCHEN SCI & TECH
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