Title:
WINDING AND UNWINDING DEVICE, AND BACKPACK
Document Type and Number:
WIPO Patent Application WO/2023/030410
Kind Code:
A1
Abstract:
The present invention relates to the technical field of winding and unwinding devices, and disclosed in the present invention is a winding and unwinding device. The device comprises: a winding and unwinding adjustment portion; a connector, wherein one end of the connector is connected to the winding and unwinding adjustment portion, and the other end of the connector is used for being connected to an external member to be wound and unwound; and a winding shaft, which is used for the connector to be wound around, wherein the connector can be wound or reversely wound around the winding shaft under the adjustment and driving of the winding and unwinding adjustment portion, so as to drive the external member connected to the connector to move and realize winding and unwinding adjustment. The winding and unwinding device further comprises a stress decomposition mechanism provided with at least one winding branch structure around which the connector is wound, wherein the connector wound around the winding shaft is connected to the external member after being wound around the winding branch structure, so as to share the stress on the connector together with the winding shaft. According to the winding and unwinding device and the backpack having the winding and unwinding device of the present invention, the stress decomposition mechanism can decompose the traction force on the connector caused by the gravity of the backpack, such that the service life of the winding and unwinding device is effectively prolonged, and the device is particularly applied to adjustable suspension backpacks.
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| JP2001000243 | BACKPACK FRAME FOR CARRYING BAGGAGE AND BACKPACK |
| WO/1991/005493 | RUCKSACK HIP PAD |
| WO/2004/084672 | HARNESS FOR A BLOWER |
Inventors:
QIAN LIANG (CN)
Application Number:
PCT/CN2022/116322
Publication Date:
March 09, 2023
Filing Date:
August 31, 2022
Export Citation:
Assignee:
WUHAN CAMBRIDGE TREE TRADING CO LTD (CN)
International Classes:
A45F3/04; A45F3/12
Attorney, Agent or Firm:
SHENZHEN SHUN LI INTELLECTUAL PROPERTY FIRM (CN)
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