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Power tool

A technology of power tools and torsion cover, applied in power tools, manufacturing tools, wrenches, etc., can solve the problems of discontinuous torque value and inability to adjust torque by users, and achieve the effect of increasing the torque adjustment range

Inactive Publication Date: 2011-06-15
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this solution is that the moment the elastic device switches between the first stroke and the second stroke, the elastic force generated by the elastic device will produce a step-like jump change, resulting in discontinuous torque value of the torque adjustment mechanism in the entire adjustment stroke. Therefore, some torque users cannot adjust

Method used

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] figure 1 The basic structure of a power tool is shown, and the power tool may be a screwdriver, an electric drill and other power tools. figure 1 The power tool shown in is an electric drill, which includes a casing 70, a working head 80, a switch 60 and a torque adjustment mechanism 40 located on the surface of the casing 70, and a motor 10, a gear box 20, and a clutch housed in the casing 70. Structure 30 and output shaft 50. The power tool can provide electric energy for the motor 10 through a battery pack or a power cord. After the power is connected, the operator presses the switch 60, and the motor 10 rotates at a high speed. After being decelerated by the gearbox 20, the power of the motor 10 is transmitted to the output shaft 50. The output shaft 50 drives the working head 80 connected thereto to rotate, and the worki...

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PUM

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Abstract

The invention discloses a power tool comprising a torque force adjusting mechanism (40). By means of the torque force adjusting mechanism (40), an operator can adjust the maximum torque force which is transmitted to an output shaft (50) from a motor (10), wherein the torque force adjusting mechanism (40) comprises an elastic device (43). In the invention, the elasticity generated by the elastic device (43) and the rotating displacement of a torque force hood (41) are in a parabolic relation.

Description

technical field [0001] The invention relates to a power tool with a torque adjustment mechanism. Background technique [0002] Rotary tools, such as screwdrivers, electric drills, and percussion drills, have high driving torques, which need to be limited in some applications. For example, when tightening a screw, it is only necessary to screw the screw into the workpiece with a specific torque value. If the torque is too large, the surface of the workpiece will be easily damaged. Here, a torque adjustment mechanism is used to set the torque of the output shaft of the rotary tool. If the resistance against screwing in is greater than the torque value set by the torque regulating mechanism, the torque regulating mechanism will release the locking of the inner teeth, the output shaft will have no output, and the screw will stop screwing in. To match the maximum torque to the task to be performed, the torque adjustment mechanism can be adjusted by the operator. [0003] A torq...

Claims

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Application Information

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IPC IPC(8): B25B21/00B25B23/14
Inventor 赵跟辉
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD