Pull-out type cord winding module
US10479642B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2016 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Aug 12, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/3919
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pull-out type cord winding module, comprising a rotary wheel (6) which a cord (7) is wound on and which is connected with a coil spring (5), and a stopper mechanism working cooperatively with the rotary wheel (6) and including a functional rail, a ball (3) and a rolling assisting device. The functional rail comprises a locking rail, a communicating rail (25) and annular rails (21, 22) which are connected, groove-shaped and arranged around an outer circumference of the rotary wheel (6). A guide groove (91) is provided on the rolling assisting device, and two ends of the guide groove (91) are located at the upper and lower sides of the outer circumference of the rotary wheel (6) respectively. The guide groove (91) cooperates with the functional rail to hold the ball (3). When the rotary wheel (6) rotates, the ball (3) rolls in the functional rail to lock or unlock rotation of the rotary wheel (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.