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Equilibrium device for a blind without pull cords

a technology of pull cords and equilibrium devices, which is applied in the direction of door/window protective devices, shutters/movable grilles, wing arrangements, etc., can solve the problems of the elastic force mechanism and the weight of the blind cannot be maintained in a force-balanced condition, and the blind cannot be moved to any level as a user wishes,

Inactive Publication Date: 2007-02-08
NIEN MADE ENTERPRISE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] The objective of the invention is to offer an equilibrium device for a blind without pull cords, provided with at least one weight-balancing members in the interior of the lower rod of a blind to increase and adjust the weight of the blind for keeping the elastic force of an elastic force mechanism and the weight of the blind in a force-balanced condition after the blind is cut in width and lightened, enabling the blind to be collapsed upward or stretched downward normally.

Problems solved by technology

However, these circle-shaped pull cords are likely to entwine a child's neck and make him suffocated in case the child plays with the pull cords carelessly.
As a result, the elastic force of the elastic force mechanism and the weight of the blind cannot be maintained in a force-balanced condition and the blind cannot be moved to any level as a user wishes.

Method used

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  • Equilibrium device for a blind without pull cords
  • Equilibrium device for a blind without pull cords
  • Equilibrium device for a blind without pull cords

Examples

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Embodiment Construction

[0011] A preferred embodiment of an equilibrium device for a blind without pull cords in the present invention, as shown in FIGS. 1, 2 and 3, includes an upper rod 10, a blind 20, linking cords 30, at least one elastic force mechanism 40, a lower rod 50 and at least one weight-balancing member 60 combined together.

[0012] The upper rod 10 is provided in the interior with a winding shaft 11 and the elastic force mechanism 40.

[0013] The blind 20 assembled at the underside of the upper rod 10 is a transverse honeycomb blind or a common Venetian blind.

[0014] The linking cords 30 are longitudinally threaded through the blind 20 to be actuated by the winding shaft 11 in the upper rod 10 to be drawn upward for collapsing or be released downward for stretching the blind 20.

[0015] The elastic force mechanism 40 installed in the interior of the upper rod 10 can be turned to actuate the winding shaft 11 to rotate and draw upward the linking cords 30 together with the blind 20. The elastic f...

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Abstract

An equilibrium device for a blind without pull cords includes at least one movable weight-balancing member installed at a proper location in the interior of the lower rod of a blind. The weight-balancing member is provided for increasing and adjusting the weight of the blind so as to keep the weight of the blind and the elastic force produced by an elastic force mechanism in a force balanced condition after the blind is cut in width and lightened, enabling the blind to be collapsed upward and stretched downward normally.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] This invention relates to an equilibrium device for a blind without pull cords, particularly to one provided with movable weight-balancing members for keeping the weight of a blind and the elastic force of an elastic force mechanism in a force balanced condition after the blind is cut in length or in width and lightened. [0003] 2. Description of the Prior Art [0004] Most conventional blinds are controlled to be collapsed upward or stretched downward by pull cords. However, these circle-shaped pull cords are likely to entwine a child's neck and make him suffocated in case the child plays with the pull cords carelessly. In view of this drawback, a kind of blind without pull cords is developed and employed. A blind without pull cords is provided with an elastic force mechanism in the interior of an upper rod to actuate the blind to move up and down through a winding shaft and linking cords. Since the elastic force of t...

Claims

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Application Information

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IPC IPC(8): A47H5/00
CPCE06B9/262E06B2009/3222E06B2009/2627E06B9/388
Inventor NIEN, MINGYU-CHE, WENCHIN-YAO, CHANG
Owner NIEN MADE ENTERPRISE CO LTD
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