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Patent Searching and Data


Title:
APPARATUS FOR PRE-LIMITING TENSION OF ROLLER BLIND SPRING
Document Type and Number:
WIPO Patent Application WO/2018/124432
Kind Code:
A1
Abstract:
The present invention relates to an apparatus for pre-limiting the tension of a roller blind spring, and more specifically, provides a product which: enables the smooth vertical movement of a screen by enabling an accurate tension value to be applied to a roller blind by limiting a tensioning value, fixed by a set number of rotations, of a spring to always the same position; has very high economic value by being capable of being applied to all blinds having a spring installed therein; does not require the tension of the spring to be adjusted in a factory according to the size and weight of a roller screen fabric; and by means of a novel bracket structure, enables a blind to be easily and simply attached and detached at the brackets themselves. The apparatus for pre-limiting the tension of a roller blind spring comprises: a rotational shaft which has formed, on the outer circumferential surface of one side thereof, a screw thread having a predetermined length and having a limiting protrusion formed thereon, and which has a fixing groove formed on the end of the other side thereof; a limiting nut which is screw-coupled to the screw thread of the rotational shaft, wherein the limiting nut is positioned at the limiting protrusion formed on the end of the screw thread so that the limiting nut is coupled so as to be incapable of moving any further forward; a limiting body which has a shaft insertion hole formed therein, and which has formed, on the outer circumferential surface thereof, fixing clips and a fixing protrusion to which a spring is connected and fixed; and the spring, of which one end is fixedly installed on the fixing protrusion of the limiting body, and the other end is coupled to the fixing groove of the rotational shaft, wherein a predetermined prior tension value is given to the spring by means of the rotation of the limiting body which is inserted on the outer surface of the rotational shaft and which has the spring connected and fixed thereto, and then the prior tension of the spring is limited by means of the limiting body being coupled to the limiting nut.

Inventors:
KWAK, Jae-Suk (1101 Gyoha Dongmun Winslecounty, 77 Chaekhyanggisup-gilPaju-si, Gyeonggi-do, 10885, KR)
Application Number:
KR2017/010825
Publication Date:
July 05, 2018
Filing Date:
September 28, 2017
Export Citation:
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Assignee:
KWAK, Jae-Suk (1101 Gyoha Dongmun Winslecounty, 77 Chaekhyanggisup-gilPaju-si, Gyeonggi-do, 10885, KR)
International Classes:
E06B9/42; E06B9/60; E06B9/80
Attorney, Agent or Firm:
KIM, Myung-Han (3Floor, 92 Nambusunhwan-ro347gilSeocho-gu, Seoul, 06729, KR)
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