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Patent Searching and Data


Title:
AUTOMATICALLY RETRACTABLE AUTOMOBILE TRAILER APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/205848
Kind Code:
A1
Abstract:
Provided is an automatically retractable automobile trailer apparatus, comprising a housing (1), a coil spring (2), a coil shaft (3), and a hauling strap (4); the housing (1) has an accommodating chamber (10), a first opening (13) in communication with the accommodating chamber (10) being disposed on each of the two side walls of the housing (1); the coil spring (2) is disposed in the accommodating chamber (10) of the housing (1); the coil shaft (3) is rotatably disposed in the accommodating chamber (10) of the housing (1) and can maintain a tendency to rotate in one direction under the driving of the coil spring (2); the hauling strap (4) is arranged passing through the coil shaft (3) and can be extended and retracted while the coil shaft is rotating; the two ends of the hauling strap (4) are arranged respectively through the corresponding first openings (13) on the housing (1); also comprised is a position-limiting structure which limits the position of the coil shaft (3) to the middle of the hauling strap (4). The hauling strap of the apparatus stretches or contracts while the position of the coil shaft does not change; the lengths of the hauling strap on both sides of the coil shaft may be kept equal, thereby improving the stability of the towing of an automobile; further, the position of the coil shaft is unchanged with respect to the hauling strap, thus preventing the problem of displacement during the contraction of the hauling strap and enabling the hauling strap to be pulled out or retracted smoothly, therefore further improving the stability of automobile towing.

Inventors:
CHEN WEIGUO (CN)
CHEN YANQIONG (CN)
DENG WEI (CN)
Application Number:
CN2019/079227
Publication Date:
October 31, 2019
Filing Date:
March 22, 2019
Export Citation:
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Assignee:
NINGBO XULI METAL PRODUCTS CO LTD (CN)
International Classes:
B60D1/18; B60D1/54
Foreign References:
CN108394238A2018-08-14
CN103978857A2014-08-13
CN204172621U2015-02-25
CN201721276U2011-01-26
DE102016200250A12017-07-13
US20070170295A12007-07-26
Attorney, Agent or Firm:
NINGBO CHANNEL PATENT ATTORNEYS OFFICE (CN)
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