Title:
NEW HANDCART OF THREE-ROLLER STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/227529
Kind Code:
A1
Abstract:
Provided is a new handcart of a three-roller structure. The handcart comprises a support (1), wherein the support (1) is configured to be n-shaped, an upper end of the support (1) is provided with a three-section pull rod (2), and two supporting legs at lower ends of the support (1) are provided with threaded sleeves (3); a lower end of each of the threaded sleeves (3) is provided with a ratchet (11); a connection rod (4) penetrates a supporting sleeve (6) and is rotatably connected to a spade plate (10); an upper end of a torsion spring (5) is fixed to the threaded sleeve (3), and a lower end of the torsion spring (5) is fixed to an inner wall of the supporting sleeve (6); a connection frame (7) is fixed to one side of the supporting sleeve (6); an outer end of the connection support (7) is rotatably connected to a triangular frame (8); and three ends of the triangular support (8) are all rotatably connected to rollers (9). The handcart of a three-roller structure is provided with three rollers, such that the function of walking up and down stairs can be realized. The three-roller connection frame is connected to the rollers in a wrapping manner, and the handcart is thus simpler in structure and easy to use, and has a good folding effect, so that accommodation and folding of the rollers, folding of the spade plate and retraction of the three-section pull rod can be realized, and the volume is smaller after folding, thereby saving on the space required for storing the cart.
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Inventors:
JIAN SHIKUN (CN)
Application Number:
PCT/CN2018/091046
Publication Date:
December 05, 2019
Filing Date:
June 13, 2018
Export Citation:
Assignee:
GUANG DONG SHUN HE IND CO LTD (CN)
International Classes:
B62B5/02; B62B1/00
Foreign References:
| CN206544536U | 2017-10-10 | |||
| CN2631888Y | 2004-08-11 | |||
| CN201825071U | 2011-05-11 | |||
| CN203410480U | 2014-01-29 | |||
| CN2693588Y | 2005-04-20 | |||
| CN202368613U | 2012-08-08 | |||
| US5468005A | 1995-11-21 |
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