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Patent Searching and Data


Title:
CORDLESS BLIND DEVICE FOR EXTERNAL POWER DRIVE
Document Type and Number:
WIPO Patent Application WO/2019/135638
Kind Code:
A1
Abstract:
Provided is a cordless blind device for external power drive. The cordless blind device comprises: a winding roll rotatably coupled to a pair of fixing brackets located at both ends; a screen member wound or unwound on the winding roll; a weight member connected to the lower end of the screen member to apply a torque in the direction in which the screen member is unwound; an elastic member for applying an elastic force to the winding roll to apply a torque in the direction in which the screen member is wound; and a power conversion module formed on at least one of the fixing brackets, and including a first driving shaft connected to the winding roll, a second driving shaft exposed to the outside of the fixing bracket and connected to a driving device connecting hole, and a gear box for transmitting power in both directions between the first driving shaft and the second driving shaft.

Inventors:
JANG, Seong-ryong (#102-803, Samsungro 417Gangnam-gu, Seoul, 06195, KR)
Application Number:
KR2019/000164
Publication Date:
July 11, 2019
Filing Date:
January 04, 2019
Export Citation:
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Assignee:
WINTEC KOREA INC. (206 Opoan-ro, Opo-eupGwangju-si, Gyeonggi-do, 12790, KR)
International Classes:
E06B9/42; E06B9/72
Foreign References:
KR101774567B12017-09-05
US20100269984A12010-10-28
KR101808278B12017-12-12
KR20140065430A2014-05-29
US20170081914A12017-03-23
Attorney, Agent or Firm:
LEE, Seung-youl et al. (Good Idea International Patent Office #203-210, 397 Seokcheon-ro,Bucheon-si, Gyeonggi-do, 14449, KR)
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