Title:
TORSION SPRING ROTATIONAL MECHANISM AND SECURITY TRIPOD HEAD
Document Type and Number:
WIPO Patent Application WO/2010/012198
Kind Code:
A1
Abstract:
A torsion spring rotational mechanism and a security tripod head which applies the torsion spring rotational mechanism. The security tripod head comprises a main bracket (11), a drive shaft (12) which can rotate forwards or reversely, and a camera component. A torsion spring (17) is nested on the external periphery of the drive shaft (12). The torsion spring (17) is provided with a first end (171) and a second end (172) which is arranged separately. A fixed blocking component (19) which holds the first end (171) and the second end (172) of the torsion spring (17) simultaneously is fixed on the main bracket (11), and a movable blocking component (20) is fixed on the drive shaft (12). The movable blocking component (20) compresses the torsion spring (17) by compressing the first end (171) of the torsion spring (17) when the drive shaft (12) rotates forwards, and the movable blocking component (20) compresses the torsion spring (17) by compressing the second end (172) of the torsion spring (17) when the drive shaft (12) rotates reversely.
Inventors:
WU ZHIJIAN (CN)
Application Number:
PCT/CN2009/072819
Publication Date:
February 04, 2010
Filing Date:
July 17, 2009
Export Citation:
Assignee:
SAE ELECTRONIC CO LTD (CN)
WU ZHIJIAN (CN)
WU ZHIJIAN (CN)
International Classes:
F03G1/02; F16M11/04; G03B17/56; H04N7/18; H04N101/00
Foreign References:
| CN101368546A | 2009-02-18 | |||
| CN201281004Y | 2009-07-29 | |||
| JP2002023222A | 2002-01-23 | |||
| JP2006091408A | 2006-04-06 | |||
| CN101179709A | 2008-05-14 | |||
| CN2876421Y | 2007-03-07 | |||
| JPH08220615A | 1996-08-30 |
Attorney, Agent or Firm:
SHENZHEN STANDARD PATENT & TRADEMARK AGENT LTD. (Yinzuo International Building,No.1056 Shennan Boulevard, Futia, Shenzhen Guangdong 0, CN)
Download PDF: