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Patent Searching and Data


Title:
QUICK CHANGE SCREWDRIVER WITH TAIL RATCHET
Document Type and Number:
WIPO Patent Application WO/2018/090632
Kind Code:
A1
Abstract:
Provided is a quick change screwdriver with a tail ratchet, the screwdriver comprising a bit bushing (2) internally provided with a plurality of bits (1), a handle (3), and a push rod (4) and a ratchet (5) provided in the handle, wherein the bit bushing (2) is internally provided with positioning grooves at multiple positions, and the bits (1) are correspondingly provided in the positioning grooves; the handle (3) is fitted over an end of the bit bushing (2), and the handle (3) is movably locked along the end of the bit bushing (2); the ratchet (5) is a three-position ratchet, and is provided at an inner tail end of the handle (3), and the ratchet (5) is used for locking the handle (3) or forming, between the ratchet and the handle (3), a unidirectional motion to the left or to the right; and an end of the push rod (4) is fixed on the ratchet (5), and the push rod (4) moves forward with the movement of the handle (3) and selects a bit, and pushes the selected bit (1) out or pulls the selected bit (1) backwards to withdraw same. The screwdriver can replace the screwdriver bit (1) by means of pushing and pulling the handle (3) and rotating the handle (3), and by means of the tail three-position ratchet (5), a quick change structure and a ratchet structure are combined. The product has a simple structure, and can be applied to various scenarios.

Inventors:
SUN, Shiyu (No. 2285 Du Hui Road, Zhuanqiao Minhang District, Shanghai 8, 201108, CN)
Application Number:
CN2017/090509
Publication Date:
May 24, 2018
Filing Date:
June 28, 2017
Export Citation:
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Assignee:
SHANGHAI EASY-USE TOOLS ENTERPRISE CO., LTD (No. 2285 Du Hui Road, Zhuanqiao Minhang District, Shanghai 8, 201108, CN)
International Classes:
B25B15/04; B25B23/16; B25G1/06; B25G1/08
Foreign References:
US20160214239A12016-07-28
CN200942502Y2007-09-05
US6601483B22003-08-05
CA2457457A12004-12-13
US4086831A1978-05-02
US20050076750A12005-04-14
US20070245862A12007-10-25
Attorney, Agent or Firm:
SHANGHAI HONGWEI INTELLECTUAL PROPERTY AGENCY CO., LTD. (Room 1416-1418, Shatian Building No.587, Changshou Rd, Shanghai 0, 200060, CN)
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