Title:
QUICKLY REPLACEABLE DUAL-PURPOSE DRILL CHUCK AND ELECTRIC HAMMER DRILL USING SAME
Document Type and Number:
WIPO Patent Application WO/2013/174217
Kind Code:
A1
Abstract:
A dual-purpose drill chuck (22) and an electric hammer drill (20) using the dual-purpose drill chuck (22). Inside of the dual-purpose drill chuck (22) is hollow; the front is a keyless or wrench type drill chuck; the back stretches, the inner wall has a key matched with the open slot of an electric hammer drill head (21), and a straight pin (32) radially penetrating the wall of the drill chuck (22); the back end is a connecting part sleeve-connected with a rotation sleeve (39) of the electric hammer drill (20), the corresponding part of the connecting part relative to the rotation sleeve (39) may be a receiving part or an insertion part, the connecting part has a fixed connecting device; the fixed connecting device is a steel ball (28), two steel ball holes are opened on the outer layer tube wall of the sleeve-connected position of both the drill chuck (22) and the rotation sleeve (39), an annular groove for fixing the steel ball (22) is at the position corresponding to the corresponding inner layer tube wall, and the steel ball (22) penetrates the two steel ball holes and enters the annular groove. The electric hammer drill using the dual purpose drill chuck is convenient and comfortable for operation, rapid for mounting and dismounting of drill chuck, high in punching precision and higher processing efficiency.
Inventors:
WANG WENJIANG (CN)
Application Number:
PCT/CN2013/075554
Publication Date:
November 28, 2013
Filing Date:
May 13, 2013
Export Citation:
Assignee:
ZHEJIANG HAIWANG ELECTRIC MACHINE CO LTD (CN)
International Classes:
B23B45/02; B23B45/16; B25D17/00; B25D17/08
Foreign References:
| CN1149850A | 1997-05-14 | |||
| EP0456003A1 | 1991-11-13 | |||
| GB2174934A | 1986-11-19 | |||
| CN202825748U | 2013-03-27 |
Attorney, Agent or Firm:
ZHEJIANG INPRO LAW FIRM (CN)
浙江英普律师事务所 (CN)
浙江英普律师事务所 (CN)
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