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Patent Searching and Data


Title:
COLLAPSIBLE STAIR-CLIMBING CART
Document Type and Number:
WIPO Patent Application WO/2019/184405
Kind Code:
A1
Abstract:
A collapsible stair-climbing cart comprises a support frame (1). Two insertion columns at a lower end of the support frame are sequentially inserted into a sliding sleeve (16), an inner sliding sleeve (5), a support sleeve (6), a threaded tube sleeve (7), a torsion spring (8), and a foot frame (9). An end of the two insertion columns at the lower end of the support frame are rotatably connected to two ends of an insertion plate (10). A lower end of a support seat (12) is connected to a lower portion of a rotating block (13), and is located at an upper side of a connection between the foot frame (9) and the rotating block (13). An upper end of the rotating block is connected to a triangular frame (14). Roller wheels (15) are rotatably connected to three ends of the triangular frame. The three roller wheels (15) enable the collapsible stair climbing cart to travel on stairs, and the support sleeve (6) and the foot frame (9) are rotatable, such that the roller wheels collapse when the triangular frames (14) at two sides of the cart are folded inwards, thereby reducing required storage space. An upper end of the foot frame (9) and a lower end of the threaded tube sleeve (7) are each provided with an inclined opening, and the torsion spring (8) is disposed inside the foot frame, so as to facilitate unfolding of the triangular frame.

Inventors:
JIAN, Shikun (No. 7 of Three Lanes, The Second Street Wanfu Road, Jiangcheng Distric, Yangjiang Guangdong 0, 529500, CN)
Application Number:
CN2018/117159
Publication Date:
October 03, 2019
Filing Date:
November 23, 2018
Export Citation:
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Assignee:
GUANGDONG SHUNHE INDUSTRIAL CO., LTD. (Beside#325 National High Way of Guangzhan Line, Tantangzhou Chengx, Yangjiang Guangdong 5, 529565, CN)
International Classes:
B62B5/02
Foreign References:
CN108454682A2018-08-28
CN208069756U2018-11-09
CN202987212U2013-06-12
CN206544536U2017-10-10
JP3202455U2016-02-04
GB2483873A2012-03-28
CN206217956U2017-06-06
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