Title:
A MANUAL SELF-LOCKING DRILL CHUCK
Document Type and Number:
WIPO Patent Application WO/2006/012796
Kind Code:
A1
Abstract:
The present invention relates to a manual self-locking drill chuck, which includes a drill body, jaws, a nut, a bearing, a nut sleeve, a front sleeve and a rear sleeve. The three jaws are mounted separately in three inclined holes, which are trisections of said body. The nut constitutes a thread drive together with said jaws. A ratchet is provided between the bearing and the end face of the body. Said ratchet and said body are cooperated with clearance fit. Two elastic locking pawls, which press always on the ratchet, and two elastic projections, which cooperated with the arched slots in the inner of the front nut, are provided on the rear of the nut sleeve. A locking ring is mounted on the upper of the ratchet. A plurality of down-curved elastic pressing pawls is provided on the ring. The inner hole of the ring and the ratchet are fitted with close clearance, and the outer of the pressing pawls cooperate with the lined slots in the inner of the front sleeve. The chuck has a self-locking function. It will not be loosened due to the vibration or impact. The chuck, which has the advantages of logical structure, convenient employment and steady operation, is suitable for clamping of various drilling tools.
Inventors:
Yang, Guimo (No. 2 Zhonghan Road, Manshan Town Wendeng, Shandong 0, 26440, CN)
Yanzhao LI. (No. 2 Zhonghan Road, Manshan Town Wendeng, Shandong 0, 26440, CN)
Yanzhao LI. (No. 2 Zhonghan Road, Manshan Town Wendeng, Shandong 0, 26440, CN)
Application Number:
PCT/CN2005/001180
Publication Date:
February 09, 2006
Filing Date:
August 03, 2005
Export Citation:
Assignee:
SHANDONG WEIDA MACHINERY CO., LTD. (No. 2 Zhonghan Road, Manshan Town Wendeng, Shandong 0, 26440, CN)
Yang, Guimo (No. 2 Zhonghan Road, Manshan Town Wendeng, Shandong 0, 26440, CN)
Yanzhao LI. (No. 2 Zhonghan Road, Manshan Town Wendeng, Shandong 0, 26440, CN)
Yang, Guimo (No. 2 Zhonghan Road, Manshan Town Wendeng, Shandong 0, 26440, CN)
Yanzhao LI. (No. 2 Zhonghan Road, Manshan Town Wendeng, Shandong 0, 26440, CN)
International Classes:
B23B31/103; B23B31/12; B23B51/12; B23Q3/12; (IPC1-7): B23B31/12
Attorney, Agent or Firm:
Kangxin Partners P. C. (Floor 16, Tower A Indo Building, A48 Zhichun Roa, Haidian District Beijing 8, 10009, CN)
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