Title:
OPENING AND CLOSING STRUCTURE, MIDDLE ROD AND UMBRELLA
Document Type and Number:
WIPO Patent Application WO/2021/189628
Kind Code:
A1
Abstract:
An opening and closing structure (30), a middle rod (10) applying the opening and closing structure (30), and an umbrella (100) applying the middle rod (10). The umbrella (100) comprises a middle rod (10), an upper nest (13) disposed on one end of the middle rod (10), and a lower nest (11) slidably sleeved on the other end of the middle rod (10). The opening and closing structure (30) comprises a movable pulley (31) disposed in the upper nest (13), a pull rope (32), and a first fixed pulley (33) disposed in the lower nest (11). One end of the pull rope (32) is disposed in the end of the middle rod (10) distant from the upper nest (13), and the other end of the pull rope (32) penetrates through the middle rod (10) and sequentially bypasses the movable pulley (31) and the first fixed pulley (33). An accommodating groove (311) is formed in the movable pulley (31) in the circumferential direction thereof. A plurality of protrusions (313) are protrudingly formed on two opposite groove walls (3111) of the accommodating groove (311). The plurality of protrusions (313) are all distributed in the circumferential direction of the groove walls (3111) at intervals, and the protrusions (313) on the two opposite groove walls (3111) are arranged to cross each other.
Inventors:
LV SUNBAO (CN)
Application Number:
PCT/CN2020/091222
Publication Date:
September 30, 2021
Filing Date:
May 20, 2020
Export Citation:
Assignee:
SHENZHEN YUANFA UMBRELLA CO LTD (CN)
International Classes:
A45B25/16; A45B19/10; A45B25/00; A45B25/02; A45B25/14
Foreign References:
| CN109527741A | 2019-03-29 | |||
| CN109303396A | 2019-02-05 | |||
| CN109043761A | 2018-12-21 | |||
| CN109393681A | 2019-03-01 | |||
| CN210094885U | 2020-02-21 | |||
| CN110652084A | 2020-01-07 | |||
| CN205456660U | 2016-08-17 | |||
| US20020153032A1 | 2002-10-24 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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