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ratchet screwdriver

A screwdriver and ratchet technology, applied in the field of power tools, can solve problems such as wrist discomfort and inconvenient operation

Active Publication Date: 2016-04-27
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For people with inflexible wrist joints or wrist joint injuries, this operation method is inconvenient; under heavy workload, working for a long time will cause wrist discomfort

Method used

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  • ratchet screwdriver
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Below in conjunction with accompanying drawing, illustrate the preferred embodiment of ratchet screwdriver.

[0021] Please refer to figure 1 , a ratchet screwdriver 100, including a housing 110 (only a part is shown), a support shaft 120 positioned in the housing 110, a ratchet 130 rotatably mounted on the support shaft 120, and a ratchet wheel 130 fixed on the support shaft 120 The drive gear 140, the output shaft 150 positioned in the housing 110. The driving gear 140 is used to drive the ratchet 130 to rotate, and the transmission between the ratchet 130 and the output shaft 150 is through a transmission system. When the driving gear 140 rotates, the driving gear 140 will drive the ratchet 130 to rotate, and the ratchet 130 will drive the output shaft 150 to rotate, thereby performing the screw tightening / loosening function.

[0022] Please refer to figure 1 , and combined with the reference figure 2 , the ratchet 130 is provided with an inner ratchet groove 13...

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PUM

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Abstract

The invention relates to a ratchet wheel screwdriver which comprises a supporting shaft, a ratchet wheel rotatably installed on the supporting shaft, a driving gear fixed to the supporting shaft and an output shaft. A pawl matched with the ratchet wheel to drive the ratchet wheel to rotate is fixedly connected to the driving gear, and a transmission system is arranged between the ratchet wheel and the output shaft. The ratchet wheel screwdriver further comprises a rack matched with the driving gear. In the ratchet wheel screwdriver, the rack performs translational motion to drive the ratchet wheel to rotate, further the ratchet wheel drives the output shaft to rotate so as to achieve screwing / unscrewing of a screw, and the wrist is not needed to be turned and is thoroughly liberated.

Description

technical field [0001] The invention relates to a power tool, in particular to a ratchet screwdriver. Background technique [0002] Current ratchet screwdrivers all realize screwing / loosening by holding the screwdriver in hand and turning the wrist back and forth. For people with inflexible wrist joints or wrist joint injuries, this operation method is inconvenient; under the condition of heavy workload, working for a long time will cause wrist discomfort. Contents of the invention [0003] Based on this, it is necessary to provide a ratchet screwdriver that can be operated without turning the wrist. [0004] A ratchet screwdriver, comprising a support shaft, a ratchet rotatably mounted on the support shaft, a drive gear fixed on the support shaft and an output shaft, wherein the drive gear is fixedly connected with the ratchet The ratchet is matched to drive the ratchet to rotate, a transmission system is provided between the ratchet and the output shaft, and the ratche...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B15/00B25B23/00
CPCB25B21/004
Inventor 杜祥金夏辉
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD