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Curtain ballchain wheel

a technology of ball chain wheel and curtain, which is applied in the direction of door/window protective device, screen, construction, etc., can solve the problem of increasing production cos

Inactive Publication Date: 2007-10-25
LIU FENG CHIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]With long time experience in designing, production, and marketing of curtain related products, the applicant proposes the pres

Problems solved by technology

Furthermore, there is rather large number of components and thus it fails to achieve the goal of convenience and the production cost is increased.

Method used

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  • Curtain ballchain wheel
  • Curtain ballchain wheel
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Examples

Experimental program
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Embodiment Construction

[0012]Referring to FIGS. 1 to 4, a curtain ballchain wheel according to present invention comprises an outer seat 1, a ball seat 2, and an inner socket 3.

[0013]The outer seat 1 provided an outer seat plate 11, an outer seat sleeve 12 extending perpendicularly from the center of the outer seat plate 11, and an outer seat core set 13 extending from the outer sleeve 12 concentrically. The outer seat core set 13 comprises two outer seat cores, between which is separated by a central groove 132. Consequently, the external diameter formed by the two outer seat cores 131 may be flexibly changed, i.e. the two outer seat cores 131 may draw back under external force and return to a larger outer diameter when the force is released. Also, the front end of the outer seat core 131 expands slantingly and outwardly to form a seat step 133 with different heights and then a rod of constant diameter. Moreover, to constrain the ballchain, the rim of the outer seat plate 11 of the outer seat 1 extends i...

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PUM

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Abstract

The present invention discloses a curtain ballchain wheel, comprising an outer seat provided with an outer seat plate, an outer seat sleeve extends perpendicularly from the center of the outer seat plate, an outer seat core set comprising outer seat cores extending integratedly from arrow ends and forming seat steps due to dimensional differences in the front ends, wherein the outer seat sleeve is socketingly engaged with a spring, whose ends are provided with a spring leg, respectively, and the outer seat plate perpendicularly extends to form a segment of outer seat collar; a ball seat comprising a seat rim, a seat ring perpendicularly connected with the sear rim, and a seat through hole in the center, wherein a ball chamber to receive a plurality of balls are provided around the seat rim; and an inner socket comprising a inner sleeve and an inner ring of larger outer diameter, wherein an inner hole is provided and the inner wall of the inner sleeve is arranged with different inner diameters to form sleeve steps. Consequently, when the ball seat is socketingly engaged with the outer seat sleeve, the outer seat plate of the outer seat passes through the inner hole of the inner seat and then engages into the outer rim to complete assembly and locating; when the seat steps are engaged with the sleeve steps, the seat collar is not shielded by the outer seat collar.

Description

FIELD OF THE INVENTION[0001]The present invention relates to an improvement in a curtain ballchain wheel, and in particular to a curtain ballchain wheel, characterized by simple design, simple components and easy operation.BACKGROUND OF THE INVENTION[0002]Curtain is familiar object in our daily lives. The function of curtain is to shield light or allow light through by rolling or releasing curtain cloth. Consequently, it is necessary to improve the operation of curtain to facilitate the choice of shielding light or allowing light through.[0003]One of the mechanisms to roll up or release curtain is a curtain ballchain wheel, which employs the engagement of the ballchain and the ballchain wheel to achieve rolling up or releasing. The ballchain described above comprises a plurality of balls jointlessly connected in a circle.[0004]Conventional art of the ballchain wheel for curtain, ROC Patent No. 3795037 “Ball Chain Wheel for Curtain” for example, discloses a ballchain wheel comprising...

Claims

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Application Information

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IPC IPC(8): A47G5/02
CPCE06B9/42E06B9/78
Inventor LIU, FENG-CHIN
Owner LIU FENG CHIN
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