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Title:
VARIABLE SPEED CHAIN WHEEL STRUCTURE HAVING SPOKE DISCS RIGIDLY CONNECTED TO CYLINDRICAL RIBS
Document Type and Number:
WIPO Patent Application WO/2019/100528
Kind Code:
A1
Abstract:
A variable-speed chain wheel structure for sport bicycles which has spoke discs (1) rigidly connected to cylindrical ribs (5), comprising: two adjacent spoke discs (1) having different diameters, and ring gears (4) which are provided at the outer circle of the spoke discs (1). The two spoke discs (1) are connected by means of the annular, spaced-apart cylindrical ribs (5) so as to form a rigid integral whole, and provided on the spoke discs (1) are weight-reduction holes (3) which are spaced apart along the circumferential direction. The described variable-speed chain wheel structure prevents the connection member between the two spoke discs (1) from forming a "cantilever beam" structure which is unfavorable for bearing force, thus making the chain wheel have high strength and rigidity and ensuring the accuracy of variable-speed transmission of the chain wheel.

Inventors:
ZHENG, Xiaoran (No. 68, Australia North Road High-tech industrial Zone, Ningxian, Changsha Hunan 0, 410000, CN)
ZHENG, Ying (No. 68, Australia North Road High-tech industrial Zone, Ningxian, Changsha Hunan 0, 410000, CN)
XIE, Tao (No. 68, Australia North Road High-tech industrial Zone, Ningxian, Changsha Hunan 0, 410000, CN)
OU, Jizhou (No. 68, Australia North Road High-tech industrial Zone, Ningxian, Changsha Hunan 0, 410000, CN)
WANG, Lang (No. 68, Australia North Road High-tech industrial Zone, Ningxian, Changsha Hunan 0, 410000, CN)
Application Number:
CN2017/119926
Publication Date:
May 31, 2019
Filing Date:
December 29, 2017
Export Citation:
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Assignee:
HUNAN NAITE MATERIAL TECHNOLOGY CO. , LTD. (No. 68, Australia North Road High-tech industrial zone, Ningxian, Changsha Hunan 0, 410000, CN)
International Classes:
B62M9/10
Foreign References:
CN107878665A2018-04-06
CN101683885A2010-03-31
EP3118099A22017-01-18
CN101513917A2009-08-26
CN205769959U2016-12-07
CN102556274A2012-07-11
Attorney, Agent or Firm:
SHENZHEN KANGHONG INTELLECTUAL PROPERTY AGENT CO., LTD (6C1 Building A, Zhongyin BuildingNo.5015, Caitian Rd., Futian Distric, Shenzhen Guangdong 6, 518026, CN)
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