US 9,366,078 B2Granted

Protection device for blind string

OwnerYeon Seok Choi, Sung Hee Han +1inventors

InventorsYeon Seok Choi, Sung Hee Han, Doo Jin Kim

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Abstract

Disclosed is a protection device for a blind string. The protection device includes a bellows tube provided in a tubular structure, allowing the blind string to pass through an inner part thereof, and having a length increased or reduced in a longitudinal direction of the blind string, a first module coupled with a lower end portion of the bellows tube and having an inner part to which an end portion of the blind string is locked, and a second module decoupled from the first module at an upper portion of the first module while the bellows tube is interposed between the first module and the second module, such that the bellows tube is folded. The bellows tube has a difference in the thickness of the skin thereof such that the bellows tube is automatically spread due to elasticity thereof when the second module is moved up from the first module.

Claims11

Dependent claims

A protection device for a blind string, comprising:

a first module having a first inner space and a locking hook which is disposed at one end of the first module;
a second module having a second inner space and a locking step which is disposed at one end of the second module, wherein the locking hook is interlocked with the locking step when the protection device is in a locking state;
and
a bellows tube formed of a tubular structure and interposed between the first and the second modules, wherein the bellows allows the blind string to pass through an inner space of the bellows tube, and has a length capable of increasing and decreasing due to elasticity in a longitudinal direction of the blind string,
wherein one end of the bellows tube is coupled to the first module and an opposite end of the bellows tube is coupled to the second module,
wherein when the protection device is in the locking state, the bellows tube is collapsed such that it is entirely contained within the first and second inner spaces and not outwardly visible, and
wherein the bellows tube is expanded so that the bellows tube is exposed outwardly when the protection device is in an unlocking state.

4 more elements

Dependencies are inferred from the claim text.