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US 9,416,588 B2Granted
Safety assembly structure of curtain bead chain
AssigneeChen Tian Co., Ltd.
InventorChing-Hsiang Cheng
Life of this patent
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Abstract
A safety assembly structure of a curtain bead chain is revealed herein. It comprises a bead chain having a string with a plurality of beads and having a safety assembly thereon for controlling a curtain. The safety assembly includes two insert blocks for joining to both ends of the string of the bead chain and a connecting unit wrapping around the two insert blocks for connecting thereof.
Claims11
A safety assembly structure of a curtain bead chain, comprises:
- a bead chain being formed with a plurality of beads, and a pair of opposing string ends;
- and
- a safety assembly for coupling the pair of opposing string ends, the safety assembly having two insert blocks and a connecting unit, wherein each insert block is attached to a corresponding string end and has a protrusion part extending therefrom, the protrusion part having a first end proximal to the insert block and a second distal end, wherein a width of the second end is greater than a width of the first end to define a tapered contour of the protrusion part, and the connecting unit being configured on opposing ends thereof to engage a protrusion part of a corresponding one of the two insert blocks, wherein the protrusion part of at least one of the insert blocks is separated from the corresponding opposing end of the connecting unit responsive to a predetermined pulling force applied to the bead chain.
Dependencies are inferred from the claim text.