Title:
BLIND DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/057027
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a blind driving device which is a blind driving device comprising: a movable string formed by connecting a plurality of chain balls by a string; a rotating body provided with a movable string sprocket for controlling the ascending and descending of a roll screen by the driving of the movable string; and the chain balls which are locked in the movable string sprocket so as to rotationally operate the rotating body, wherein: weights which are considerably heavy are formed on both ends of the movable string, and in terms of the shape of the chain balls, one side in a cross sectional form of one chain ball has a half-spherical shape and the other side thereof has an oval shape with respect to the center of the movable string, and in reverse, one side in a cross sectional form of the other chain ball has an oval shape and the other side thereof has a half-spherical shape such that the half-spherical parts of the chain balls are locked into locking ends of the movable string sprocket in a direction of pulling the movable string so as to drive the rotating body; and when the movable string is released, the oval parts pass over the locking ends of the movable string sprocket by the weight of the weights so as to return to the state before the movable string was pulled. The present invention provides the effect of facilitating the ease of use by driving a blind only when the movable string is pulled, and by allowing the movable string to return to the original state when the movable string is released. Furthermore, the present invention is useful for preventing, by cutting off one end of the movable string, accidents such as child suffocation caused by children being caught in the movable string by mistake or while playing.
Inventors:
YOO SANGWON (KR)
Application Number:
PCT/KR2014/009812
Publication Date:
April 23, 2015
Filing Date:
October 17, 2014
Export Citation:
Assignee:
YOO SANGWON (KR)
International Classes:
E06B9/42; E06B9/326
Foreign References:
| KR20120007333A | 2012-01-20 | |||
| KR101213794B1 | 2012-12-18 | |||
| KR20120008785U | 2012-12-24 | |||
| KR101252028B1 | 2013-04-10 |
Attorney, Agent or Firm:
SHIM, HYUNG SEOB (KR)
심형섭 (KR)
심형섭 (KR)
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