SCREWDRIVER AND SCREW

WIPO Patent Application WO/2021/190426

A1

A screwdriver, comprising a screwdriver head, the screwdriver head (1) being divided into a first screwdriver head part (11) and a second screwdriver head part (12), and the first screwdriver head part (11) and the second screwdriver head part (12) overlapping to form a complete screwdriver head (1); and a tension mechanism (2), which is used for generating tension so as to drive a screw when the screwdriver head (1) is in contact with a screw recess after the first screwdriver head part (11) and the second screwdriver head part (12) overlap. A screw (7), comprising a cross-shaped recess (71), a side surface of the cross-shaped recess (71) being triangular or quadrilateral. Therefore, after the first screwdriver head part (11) and the second screwdriver head part (12) are combined and inserted into the screw (7), the first screwdriver head part (11) and the second screwdriver head part (12) can be separated by means of the tension mechanism (2). In addition, the tension mechanism (2) provides tension to clamp the screw (7), and therefore, screws made of different materials can be clamped by means of the screwdriver, thereby improving the screw fastening efficiency, and avoiding the processes of magnetizing the screwdriver and so on.

LI CHUNJIE (CN)

PCT/CN2021/081966

September 30, 2021

March 22, 2021

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LI CHUNJIE (CN)

B25B15/02

US20140102265A1	2014-04-17
CN87215416U	1988-12-28
CN207548617U	2018-06-29
CN208961893U	2019-06-11
CN2080444U	1991-07-10
CN2084863U	1991-09-18
CN103737532A	2014-04-23
US6973860B2	2005-12-13

DING & ASSOCIATES PATENT TRADEMARK & LAW (CN)

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