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screwdriver

A technology of screwdrivers and components, applied in the field of tools for manually turning screws, can solve the problem of low torque of screwdrivers

Active Publication Date: 2017-10-20
HANGZHOU GREAT STAR IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the torque of this screwdriver is not high

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0022] like figure 1 and 2 As shown, the screwdriver of the present invention includes a screwdriver 1, a handle 2, and a speed increasing device 3. The handle 2 is connected with the speed increasing device 3, and the handle rotates and rotates relative to the speed increasing device.

[0023] like Figure 4 , as shown in 5 and 6, the speed increasing device 3 includes a central shaft 31 connected with the batch rod and provided with a tooth portion 311 on the outer periphery, a first element 32 arranged inside the handle, and at least one gear 33 connected with the first element, The gear 33 is arranged on the side of the central shaft and matches with the tooth portion 311 on the outer periphery of the central shaft 31 and can engage with each other. The speed increasing device also includes a gear sleeve 34 sleeved on the outside of the gear 33 , wherein corresponding positions inside the gear sleeve 34 have teeth 341 engaged with the gear 33 .

[0024] Specifically, t...

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PUM

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Abstract

The invention discloses a screwdriver. The screwdriver comprises a screwdriver rod, a handle, an acceleration device and a lock structure, wherein the acceleration device comprises a central shaft, a first element, at least one gear and a gear sleeve, the central shaft is connected with the screwdriver rod, the periphery of the central shaft is provided with a tooth part, the first element is arranged at the inner part of the handle, the at least one gear is connected with the first element, the gear sleeve is arranged outside the gear in a sleeving way, teeth which are in occlusion with the gear are arranged in corresponding positions of the inner side of the gear sleeve, and the gear is arranged at the side part of the central shaft and is in occlusion with the tooth part arranged at the periphery of the central shaft. According to the screwdriver disclosed by the invention, the problem that the twisting force of the screwdriver is not high is solved.

Description

technical field [0001] The invention relates to a tool for manually turning screws, more specifically, a screwdriver. Background technique [0002] A screwdriver is a tool used to twist a screw to force it into place, including a screwdriver and a handle. Usually, the handle is turned one turn manually, and the screwdriver is turned one turn until the screw is turned to a predetermined position. This is very inefficient. So there is a speed-up screwdriver on the market. Turn the handle one turn, and the screwdriver can turn several times, which can improve the efficiency of the screwdriver. But the torque of this screwdriver is not high. [0003] Therefore, there is a need for a screwdriver that is both efficient and solves the problem of low torque on the market. Contents of the invention [0004] The object of the present invention is to provide a highly efficient screwdriver, which adopts a speed-increasing structure, has a simple structure design and is easy to use....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B17/00B25B15/04
CPCB25B15/04B25B17/02
Inventor 王伟毅
Owner HANGZHOU GREAT STAR IND CO LTD