Mechanical torque-adjustable screwdriver

A screwdriver, mechanical technology, applied in the direction of screwdrivers, wrenches, wrench, etc., can solve problems that affect the installation or assembly quality of parts, screw slippage or screwdriver damage

Inactive Publication Date: 2014-11-26
SHAANXI ALLIANCE LOGISTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a traditional screwdriver tightens a screw, the applied torque and degree of tightness are controlled by human feeling, often causing screw slippage or screwdriver damage due to excessive applied torque, or affecting the installation or assembly quality of parts due to different applied torques

Method used

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  • Mechanical torque-adjustable screwdriver

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Embodiment Construction

[0010] The mechanical adjustable torque screwdriver of the present invention comprises a U-shaped hollow handle 5, a screwdriver rod sleeve 10, the screwdriver rod sleeve 10 is connected to the screwdriver rod 1, and the screwdriver rod 1 passes through The adjusting nut 2 and the lower ratchet 7 are rigidly connected with the upper ratchet 8 through a rectangular hole, and the upper ratchet 8 matched with the lower ratchet 7 is connected with the handle 5 through a flat roller bearing 9. Between the adjusting screw 4 and the lower ratchet 7 A spring 6 is provided, and the central axis of the adjusting nut 2, the central axis of the adjusting screw rod 4, and the central axis of the lower ratchet 7 all coincide with the central axis of the screwdriver rod 1. The mechanical adjustable torque screwdriver also includes an adjustment sheath 3 , which is sleeved on the adjustment nut 2 and connected to the handle 5 .

[0011] When the tightening screw applies torque to the handle 5...

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PUM

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Abstract

The invention relates to the field of auxiliary tools, in particular to a mechanical torque-adjustable screwdriver. The mechanical torque-adjustable screwdriver comprises a U-shaped hollow handle and a screwdriver rod sleeve, the screwdriver rod sleeve is connected to a screwdriver rod in a sleeved mode, the screwdriver rod penetrates through an adjusting nut and an adjusting screw rod and is connected with a lower ratchet wheel, an upper ratchet wheel matched with the lower ratchet wheel is connected with the handle through a planar roller bearing, and a spring is arranged between the adjusting screw rod and the lower ratchet wheel. According to the mechanical torque-adjustable screwdriver, torque is applied to the lower ratchet wheel through the handle, the helicoidal surface of the lower ratchet wheel and the helicoidal surface of the upper ratchet wheel are meshed to drive the upper ratchet wheel, the upper ratchet wheel is in rigid connection with the screwdriver rod through a rectangular hole, so that the screwdriver rod is driven by the upper ratchet wheel to rotate, the purpose of fastening screws is achieved, and the torque is adjustable.

Description

technical field [0001] The invention relates to the field of auxiliary tools, in particular to a mechanical adjustable torque screwdriver. technical background [0002] A screwdriver is a commonly used tool for fastening screws. There are various screwdrivers, which are used for installation and maintenance. It can be said that as long as there are screws, a screwdriver will be used. When a traditional screwdriver tightens a screw, the applied torque and degree of tightness are controlled by human feeling, often causing screw slippage or screwdriver damage due to excessive applied torque, or affecting the installation or assembly quality of parts due to different applied torques . Contents of the invention [0003] In order to solve the above problems, the present invention provides a handle to apply torque to the lower ratchet, the lower ratchet and the helical surface of the upper ratchet drive the upper ratchet, the upper ratchet and the screwdriver blade are rigidly c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B15/02B25B23/143
CPCB25B15/04B25B23/1427
Inventor 刘秋丽
Owner SHAANXI ALLIANCE LOGISTICS
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