Ratchet screw driver

A screwdriver and ratchet technology, applied in the field of screwdrivers, can solve the problems of complex structure, inconvenient to hold by hand, etc., and achieve the effect of large number of teeth, simple and compact structure, and low noise
CN101890688BInactive Publication Date: 2012-12-26HANGZHOU GREAT STAR IND CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HANGZHOU GREAT STAR IND CO LTD
Publication Date
2012-12-26
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a ratchet screw driver which aims at solving the problems that the existing orienting screw driver is inconvenient to hold by hand and has a complicated structure. The ratchet screw driver comprises a handle and a driver rod and is characterized in that the front end of the handle is provided with a pawl bed, wherein the pawl bed is provided with two pendular pawls arranged in the opposite directions and a shift part for controlling the position states of the two pawls, and the shift part is provided with two shift blocks which respectively correspond to the two pawls; the tail of the driver rod is provided with a ratchet sleeve, and the ratchet sleeve is sheathed on the pawl bed and is at least meshed with one of the two pawls; and an operating part which can be positioned on the handle is arranged and is used for changing the position of the shift part. By integrating all orienting structures at the front end of the handle, the ratchet screw driver has the advantages of simple and compact structure and convenient assembly and disassembly. Since a rotating sleeve is adapted to the outline wheel of the handle, the ratchet screw driver is kept adapted to the handle in shape in addition to facilitating gear shift, thereby facilitating being holden by hand for usage.
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Description

technical field

[0001] The invention relates to a screwdriver, in particular to a screwdriver which transmits torque through a ratchet wheel and a pawl. Background technique

[0002] In the existing screwdrivers, the screwdriver is usually fixed with the handle. When in use, the hand holding the handle can only rotate a small angle. Therefore, when a part needs to be rotated continuously for many times, it needs to stop Let the hand rotate an angle in the opposite direction. Sometimes the hand-held screwdriver is temporarily withdrawn from the part to achieve the reverse rotation. In this way, the screwdriver needs to be aligned with the part again, and sometimes the other hand is used to assist the hand holding the handle to loosen. Open the handle to achieve reverse rotation. Obviously, these two methods are inconvenient and affect the working efficiency; it is also easy to screw the screw head.

[0003] In order to overcome the above deficiencies, a directional manual s...

Claims

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