Title:
ROLLER BLIND BALANCE ADJUSTER AND ROLLER BLIND COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2021/109766
Kind Code:
A1
Abstract:
A roller blind balance adjuster and a roller blind comprising same. The roller blind balance adjuster comprises a stepped shaft, and a friction tube (30) for connection to a roller blind rod; a small-diameter section of the stepped shaft is provided with an external thread on the side surface; the stepped shaft passes through the friction tube (30); the friction tube (30) is provided therein with an internal thread; the inner side of the friction tube (30) is threadedly connected to the small-diameter section of the stepped shaft; a friction layer is provided between the friction tube (30) and a large-diameter section of the stepped shaft. The roller blind comprising the roller blind balance adjuster further comprises a roller blind rod, a cloth, and two mounting members; the cloth is wound on the roller blind rod; the two ends of the roller blind rod are mounted on the mounting members; a return spring is provided in the roller blind rod; the friction tube (30) is connected to the roller blind rod; one end of the stepped shaft is fixed to one of the mounting members. According to the roller blind balance adjuster, when the roller blind rod rotates, the friction tube can increase or decrease the friction force between the friction tube and the friction layer as the torque of the return spring changes, thereby dynamically balancing the torque of the return spring.
Inventors:
QIU YONGZHONG (CN)
Application Number:
PCT/CN2020/125368
Publication Date:
June 10, 2021
Filing Date:
October 30, 2020
Export Citation:
Assignee:
GUANGZHOU JADY WINDOW COVERINGS TECH CO LTD (CN)
International Classes:
E06B9/42; E06B9/62
Foreign References:
| CN110984826A | 2020-04-10 | |||
| CN211647936U | 2020-10-09 | |||
| CN107345472A | 2017-11-14 | |||
| CN207122272U | 2018-03-20 | |||
| CN208267736U | 2018-12-21 | |||
| JPS5785482A | 1982-05-28 | |||
| JP2009097171A | 2009-05-07 | |||
| US20180347269A1 | 2018-12-06 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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