Title:
EXTENSION-RETRACTION CONNECTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/237100
Kind Code:
A1
Abstract:
An extension-retraction connecting device, comprising an elastic band (1), an abutting connection member (2) used for being directly connected to the elastic band (1) and a fastening locking member (3) sleeved on the outer side of the abutting connection member (2). The elastic band (1) comprises a main body section (1a) close to the middle portion and a snap-fitting connection section (1b) close to the end portion; the abutting connection member (2) further comprises two snap-fitting legs (2a) formed by extending downward from the lower surface of the abutting connection member and mutually symmetrically arranged and used for abutting against the outer side surface of the snap-fitting connection section (1b); a portion having a spacing that gradually decreases from a starting position of respective extension to the tail end is formed between opposite inner side wall surfaces of the two snap-fitting legs (2a); and a distance of at least one position of the inner side surfaces of the two snap-fitting legs (2a) is smaller than the size of a position having the maximum radial size of the snap-fitting connection section (1b); the interior of the fastening locking member (3) is hollow to form an abutting limiting surface (3a) for abutting against the outer side surfaces of the snap-fitting legs (2a) and limiting the snap-fitting legs (2a) to move outward. The extension-retraction connecting device is stable and firm in connection, and can be conveniently disassembled for maintenance or replacement of internal components.
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Inventors:
YU YAO (CN)
LU YICHEN (CN)
LU YICHEN (CN)
Application Number:
PCT/CN2021/129930
Publication Date:
November 17, 2022
Filing Date:
November 11, 2021
Export Citation:
Assignee:
HUZHOU AIXIANTE ELECTRONIC TECH CO LTD (CN)
International Classes:
A63B21/055
Foreign References:
| CN205683470U | 2016-11-16 | |||
| CN107469224A | 2017-12-15 | |||
| US20110092347A1 | 2011-04-21 | |||
| CN203029886U | 2013-07-03 | |||
| CN203244719U | 2013-10-23 | |||
| CN213964975U | 2021-08-17 | |||
| US8904603B1 | 2014-12-09 |
Attorney, Agent or Firm:
ZHEJIANG KG IP LAW FIRM (CN)
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