Title:
TRICYCLE
Document Type and Number:
WIPO Patent Application WO/2022/113262
Kind Code:
A1
Abstract:
Provided is a tricycle which comprises two front wheels and is supported at three points. This tricycle includes: a handle shaft which is inserted through a tubular handle frame body so as to be rotatable; a steering tubular body which is a body in a substantially tubular shape, has an upper end portion fixed to a lower end portion of the handle shaft so as to hang vertically, and includes internal teeth formed on an inner peripheral wall portion of a bottom end portion; a parallel link which is mounted to a front side of the steering tubular body; the internal teeth which rotate synchronously with the handle shaft; an external-tooth spur gear which meshes with the internal teeth; and a steering link which includes a drive link coupled to the external-tooth spur gear. The two front wheels turn at a turn angle which is a sum of a turn angle due to the parallel link connected to the handle shaft so as to be able to integrally rotate in the left and right direction and a turn angle due to the steering link with a rotation angle differing from the handle shaft according to a gear ratio between the external-tooth spur gear and the internal teeth.
Inventors:
TAKEDA GUNSO (JP)
KANDA FUMIHIRO (JP)
KANDA FUMIHIRO (JP)
Application Number:
PCT/JP2020/044200
Publication Date:
June 02, 2022
Filing Date:
November 27, 2020
Export Citation:
Assignee:
SANGYOKIDEN CO LTD (JP)
International Classes:
B62K5/05; B62K5/10
Foreign References:
| FR3088296A1 | 2020-05-15 | |||
| JP2014019281A | 2014-02-03 | |||
| JP2002337779A | 2002-11-27 | |||
| CN109383673A | 2019-02-26 |
Attorney, Agent or Firm:
TAMURA Yoshimitsu et al. (JP)
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