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Title:
TRANSMISSION SWITCHING DEVICE OF ELECTRIC HAMMER
Document Type and Number:
WIPO Patent Application WO/2014/090041
Kind Code:
A1
Abstract:
A transmission switching device of an electric hammer comprises an intermediate shaft (4) provided with an intermediate shaft gear (5), a transmission gear (10), an oscillating bar bearing (8) and an intermediate shaft sleeve (7). The transmission gear extends outwards to form a connecting portion (22) sleeved on one end of the intermediate shaft sleeve. The oscillating bar bearing is sleeved on the connecting portion and the intermediate shaft sleeve respectively. Key groove matching structures are arranged between the other end of the intermediate shaft sleeve and the intermediate shaft, the connecting portion, the oscillating bar bearing. A shifting bearing (6) is arranged on the peripheral side of the intermediate shaft sleeve. An inner ring of the shifting bearing is the intermediate shaft sleeve. An outer ring of the shifting bearing is provided with a groove (21) and a gear-shifting mechanism is connected in the groove. The transmission mechanism and the gear-shifting mechanism of the transmission switching device of the electric hammer remain relatively stationary, and the device has no friction, abrasion, heating, oil leakage and tooth hitting, and has characteristic of long service life, less maintenance and high work efficiency.

Inventors:
DAI, Wanyue (Zhejiang Benyu Tools Co. Ltd, No.188, Haichang Rd., Binhai Development Zone, Jiaojiang Distric, Taizhou Zhejiang 0, 318000, CN)
Application Number:
CN2013/085366
Publication Date:
June 19, 2014
Filing Date:
October 17, 2013
Export Citation:
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Assignee:
ZHEJIANG BENYU TOOLS CO., LTD. (No.188, Haichang Rd. Binhai Development Zone, Jiaojiang Distric, Taizhou Zhejiang 0, 318000, CN)
International Classes:
B25D16/00; B25D17/00; F16H59/02
Foreign References:
CN202318260U2012-07-11
CN102794751A2012-11-28
CN1621205A2005-06-01
CN101312807A2008-11-26
CN2707439Y2005-07-06
JPH07328954A1995-12-19
CN102975174A2013-03-20
CN203045678U2013-07-10
CN201120173533U2011-05-19
Other References:
See also references of EP 2767367A4
Attorney, Agent or Firm:
HANGZHOU SIKERUI PATENT OFFICE CO., LTD (LIN Junyong, Room A301No.34 Jiefang Road, Shangchen, Hangzhou Zhejiang 9, 310009, CN)
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