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Title:
A SPEED CHANGING TOOL
Document Type and Number:
WIPO Patent Application WO/2010/048889
Kind Code:
A1
Abstract:
A speed changing tool(9) has a motor (2), an output shaft (6), a gear transmission mechanism (4) connected with motor (2) and output shaft (6) and a control system (8). The control system (8) includes a control unit (3) and a driving device (5). The driving device (5) is provided with a moving element (45), which may move between a first position and a second position within the gear transmission mechanism (4). The output shaft(6) has different output characteristics when the moving element (45) is located at the first position and the second position, respectively. When load torque is changed to preset value, the control unit (3) firstly adjusts torque sent from the motor (2) to the gear transmission mechanism(4), then controls the driving device (5) to realize automatic shift.

Inventors:
WANG, Jiada (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
王家达 (中国江苏省苏州市工业园区东旺路18号, Jiangsu 3, 215123, CN)
CHEN, Chengzhong (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
陈成忠 (中国江苏省苏州市工业园区东旺路18号, Jiangsu 3, 215123, CN)
ZHANG, Shisong (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
张士松 (中国江苏省苏州市工业园区东旺路18号, Jiangsu 3, 215123, CN)
ZHONG, Hongfeng (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
钟红风 (中国江苏省苏州市工业园区东旺路18号, Jiangsu 3, 215123, CN)
Application Number:
CN2009/074677
Publication Date:
May 06, 2010
Filing Date:
October 29, 2009
Export Citation:
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Assignee:
POSITEC POWER TOOL (SUZHOU) CO., LTD (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
苏州宝时得电动工具有限公司 (中国江苏省苏州市工业园区东旺路18号, Jiangsu 3, 215123, CN)
WANG, Jiada (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
王家达 (中国江苏省苏州市工业园区东旺路18号, Jiangsu 3, 215123, CN)
CHEN, Chengzhong (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
陈成忠 (中国江苏省苏州市工业园区东旺路18号, Jiangsu 3, 215123, CN)
ZHANG, Shisong (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
张士松 (中国江苏省苏州市工业园区东旺路18号, Jiangsu 3, 215123, CN)
ZHONG, Hongfeng (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
International Classes:
F16H3/44; B23B45/02; B23B47/14; B25B21/00; B25D16/00; B25F5/00; F16H59/04; F16H61/00
Foreign References:
CN201093036Y
CN101091998A
US4869131A
EP0787931B1
CN201335130Y
CN101377229A
CN201300407Y
CN201300408Y
CN201300409Y
CN201309145Y
CN201300410Y
JP2004160592A
CN1748950A
Attorney, Agent or Firm:
SHANGHAI ESSEN PATENT & TREADMARK AGENCY (Room 206, 2FNo. 248, Dongxin Road, Putuo, Shanghai 3, 200063, CN)
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