Title:
FOLDING LINKAGE BICYCLE FRAME
Document Type and Number:
WIPO Patent Application WO/2022/242208
Kind Code:
A1
Abstract:
A folding linkage bicycle frame. A handle bar is rotatably hinged to the top end of an upper tube; an upper tube connecting piece can be hinged, such that said piece can rotate forward and backward, to a fifth connecting part of a steering shaft connecting kit; the rear end of the upper tube is hinged above the upper tube connecting piece; the rear end of a lower tube is hinged below the steering shaft connecting kit; the front end of the upper tube is hinged to a second steering shaft, and the front end of the lower tube is hinged to a first steering shaft; a first movable connecting piece and a second movable connecting piece intersect in a cross shape and are hinged to the steering shaft connecting kit and a rear fork; the rear fork is hinged to a rear wheel at a split part; a seat post connecting part below a seat post is hinged to a third connecting part of the steering shaft connecting kit; the fifth connecting part and a first connecting part of the steering shaft connecting kit are linked by means of a linkage apparatus to lock the frame; a third connecting part and a fourth connecting part of the rear fork are linked by means of the linkage apparatus to lock the frame; the second steering shaft below the handle bar is hinged to the first steering shaft at the top end of a front fork; a front wheel is hinged below the front fork; a quick-release screw handle is hinged above a hinging part of the upper tube to lock the frame; and a drive apparatus is hinged on the first movable connecting piece.
Inventors:
QIU SHUYUAN (CN)
Application Number:
PCT/CN2022/072204
Publication Date:
November 24, 2022
Filing Date:
January 16, 2022
Export Citation:
Assignee:
QIU SHUYUAN (CN)
International Classes:
B62K15/00
Foreign References:
| EP2336014A1 | 2011-06-22 | |||
| CN201276179Y | 2009-07-22 | |||
| US20090014981A1 | 2009-01-15 | |||
| EP1378431A1 | 2004-01-07 | |||
| KR20120010487A | 2012-02-03 | |||
| FR3074135A1 | 2019-05-31 | |||
| US20050285366A1 | 2005-12-29 | |||
| CN105966517A | 2016-09-28 | |||
| CN1527777A | 2004-09-08 | |||
| CN103661724A | 2014-03-26 |
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