Title:
BLIND DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/060071
Kind Code:
A1
Abstract:
A blind driving device, comprising two cord winding and unwinding mechanisms (1) used for connecting different parts of a blind body (400) to separately drive the blind body (400) to move. Each cord winding and unwinding mechanism (1) comprises bases (11), cord drums (12) pivotally provided on the bases (11), bearing cords (13), and power assemblies (14) used for driving the cord drums (12) to rotate. Each cord drum (12) is a conical drum having the drum diameter gradually decreased from one end to the other end; a first cord guide (111) is provided on a base (11) corresponding to a large-diameter end (12a) of the corresponding cord drum (12); one end of each bearing cord (13) is fixed onto a small-diameter end (12b) of the corresponding cord drum (12), and the other end of the bearing cord (13) is wound around the cord drum (12) and led out from the large-diameter end (12a) of the cord drum (12) and then passes through the first cord guide (111), threads through the base (11) and extends downwards to be connected to the blind body (400). The cord drums (12) of the two cord winding and unwinding mechanisms (1) are axially arranged side by side and in parallel and the orientations of the large-diameter ends (12a) of the cord drums (12) of the two cord winding and unwinding mechanisms (1) are opposite, or the cord drums (12) of the two cord winding and unwinding mechanisms (1) are axially arranged in parallel and in a staggered mode. The device has a compact structure and a smaller size at a position corresponding to the thickness direction of an upper beam, and thus can be applied to the upper beam having a smaller thickness.
Inventors:
LEI ZHENBANG (CN)
LEI XINGBANG (CN)
LEI XINGBANG (CN)
Application Number:
PCT/CN2022/120243
Publication Date:
March 28, 2024
Filing Date:
September 21, 2022
Export Citation:
Assignee:
LEAFY WINDOWARE CO LTD (CN)
International Classes:
E06B9/262
Foreign References:
| CN114934742A | 2022-08-23 | |||
| CN208486805U | 2019-02-12 | |||
| CN202031462U | 2011-11-09 | |||
| CN208564408U | 2019-03-01 | |||
| CN210783894U | 2020-06-19 | |||
| JP2006104860A | 2006-04-20 |
Attorney, Agent or Firm:
SHENZHEN EASYPRO INTELLECTUAL PROPERTY OFFICE (GENERAL PARTNERSHIP) (CN)
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