The invention provides a bicycle tube frame, and particularly to a bicycle tube frame with a traditional rhombus-similar shape. The bicycle tube frame comprises a tube structure (2). The tube structure is provided with the components of at least one front tube (3) which is used for connecting with a front fork (4); a first basic horizontal tubular member (5) which is functionally connected with the front tube (3) and forms an inlet (6) for mounting a bicycle seat; a second oblique tubular member (7) which is functionally connected with the front tube (3) and supports a crankshaft. The second oblique tubular member (7) and the first horizontal tubular member (5) are respectively arranged in a first central plane and a second central plane (15a,15b) which is different from the first central plane. The first central plane and the second central plane rotates relative to a third central plane (16) according to different directions. The third central plane extends between the front tube (3) and the inlet (6).
Bicycle tube frame
2016-01-27
Patent
Electronic Resource
English
IPC: | B62K Fahrräder , CYCLES |
BICYCLE FRAME TUBE HAVING BUILT-IN MOTOR, BICYCLE FRAME AND ELECTRIC BICYCLE
European Patent Office | 2020
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