GB2551586A

GB2551586A - Roller blind controller for easy mounting of a bead chain

Info

Publication number: GB2551586A
Application number: GB1611070.2A
Authority: GB
Inventors: Kao Yu-Ting
Original assignee: Uni Soleil Enterprise Co Ltd
Current assignee: Uni Soleil Enterprise Co Ltd
Priority date: 2016-06-24
Filing date: 2016-06-24
Publication date: 2017-12-27
Also published as: GB201611070D0

Abstract

Roller blind or shade controller comprises fixing base 1, bead roller or sprocket 2, stopper 3 for positioning the bead roller, and fixing cap 4 located on the stopper for preventing the bead chain from falling off. The stopper features a plurality of locking strips 31 around its outer end and the fixing cap is set with a plurality of locking slots 41. Locking strips and slots are locked with and positioned by each other. Stopping bars 32 may be arranged around an inner end of the stopper and mounted in positioning slots 42 on the fixing cap. A fool-proofing or alignment recess 33 may be located on the stopper and engaged with protrusion 43 on the cap. The roller blind controller provides convenient mounting and positioning of a bead chain with a simple locking design.

Description

ROLLER BLIND CONTROLLER FOR THE EASY MOUNTING OF

A BEAD CHAIN

Field of the invention

The present invention relates to a roller blind controller for easy mounting of a bead chain, especially to a roller blind controller in which a bead chain is mounted easily by a simple locking design.

Descriptions of Related Art

The curtains available now such as Roman style shades, Venetian blinds, roller blinds, etc. are pulled up or down vertically under control of a roller driven by a head controller.

Referring to Taiwanese Pat. Pub. No. M317233, a roller blind controller is disclosed. The roller blind controller includes a fixing base, a rotating disc, a chain, a fixing cap, two stopping springs, and a linkage connector. A plate is formed on a rear side of the fixing base while a connecting bar is extended from a center of the fixing base. A nut is set on an end part of the connecting bar. A plurality of engaging slots is disposed around the rotating disc and a sleeve tube with a positioning notch is extended from the center of the inner side of the rotating disc. The chain is in a continuous form and is mounted in the engaging slot of the rotating disc correspondingly. The fixing cap is arranged at the fixing base and having a through hole on a center thereof. Two sides of the stopping spring are extended to form a stopping pin respectively. An outer section of the linkage connector is extended to form a sleeve section. The fixing base is disposed on an inner side of the plate while the connecting bar is inserted into the sleeve tube and the two stopping springs are set on the connecting bar. The stopping pins are located at the positioning notch. The chain is wound around the engaging slot of the rotating disc and then suspended from the rotating disc. The fixing cap is disposed on the fix case for covering the rotating disc therein. The sleeve tube is passed through the through hole and the linkage connector is fitted on and connected to the sleeve tube.

When the user intends to assembly the chain of the roller blind controller on the rotating disc, he/she firstly turn out the screw that fastens the linkage connector with the connecting bar. Then loosen each component to form a certain gap between the engaging slot and the fixing cap. Thus the chain is mounted into the engaging slot. Next the components are turned back in turn and secured again by the screw. However, the assembly of the chain is not convenient. The screw is loosened by tools and then turned out. Moreover, other components fall off once they get loose and are unable to be turned back and tightened smoothly.

Referring to Taiwanese Pat. Pub. No. 428468, a spring applied to a roller blind controller is disclosed. A slot and a locking protmsion are axially formed on a rear end of a stopping rod. The locking protrusion is assembled with an outer cap correspondingly. While assembling a cord, the locking protrusion is pressed directly to be released from the outer cap. Thus each component gets loose a bit and the cord can be wound around a cord wheel.

There is no need to use tools during the loosening process. However, the disassembled roller blind controller may still have the same assembly problem that not all components are turned back and assembled precisely.

In order to solve the assembly problem, a roller blind controller with a quick assembly bead chain is disclosed in Taiwanese Pat. Pub. No. M496429. The roller blind controller mainly includes a fixing base, a bead roller, a spring and a sleeve connected in turn to form one part. A disc body is formed on one end of the sleeve and one end of the fixing base respectively. A protective cap is set on an upper edge of the disc body of the fixing base. The roller blind controller features on that the disc body of the sleeve is disposed with two separate mounting slots used for mounting two ends of the bead chain. The bead chain is mounted in the mounting slots and then the disc body is rotated. Thereby there is no need to disassemble the components while assembling the bead chain.

Thus there is room for improvement and a need to provide a novel roller blind controller easy for mounting a bead chain.

SUMMARY OF THE INVENTION

Therefore it is a primary object of the present invention to provide a roller blind controller that is easy for mounting a bead chain by a simple locking design.

In order to achieve the above object, a roller blind controller easy for mounting a bead chain according to the present invention includes a bead roller used for mounting a bead chain and arranged at one side of a fixing base. A stopper is used for positioning the bead roller while a fixing cap is covered on the stopper for protecting the bead chain from falling off. The stopper is disposed with a plurality of locking strips around an outer end thereof and the fixing cap is arranged with a plurality of locking slots. The locking strips and the locking strips are locked with and positioned by each other correspondingly. Thereby the bead chain is installed and positioned conveniently by the simple locking design. A plurality of stopping bars is set around an inner end of the stopper. The stopping bars and the locking strips are in a staggered arrangement. The fixing cap is disposed with a plurality of positioning slots corresponding to the stopping bars. The stopping bars and the positioning slots are mounted with each other correspondingly. A fool-proofing recess may be formed on surface of the outer end of the stopper while a corresponding fool-proofing protrusion is disposed on the fixing cap. The fool-proofing recess and the fool-proofing protrusion are mounted with each other.

The present invention has the following advantages compared with the structure available now: 1. The fixing cap and the stopper are assembled with and positioned by each other by the locking strips and the locking slots locked with each other. The bead chain is mounted and positioned conveniently by the easy locking design. 2. The fixing cap and the stopper are connected more securely and tightly by the stopping bars mounted in the positioning slots correspondingly. 3. The fixing cap is assembled in a certain orientation precisely by a fool-proofing protrusion corresponding to a fool-proofing recess. The mistake-proofing design avoids assembly error.

BRIEF DESCRIPTION OF THE DRAWINGS

The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein:

Fig. 1 is an exploded perspective view of an embodiment according to the present invention;

Fig. 2 is a perspective view of an embodiment according to the present invention;

Fig. 3 is a longitudinal sectional view of an embodiment according to the present invention;

Fig. 4 is an enlarged partial sectional view of an embodiment according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to Fig. 1 and Fig. 2, a roller blind controller for easy mounting of a bead chain according to the present invention mainly includes a fixing base 1, a bead roller 2, a stop plate or stopper 3, a fixing cap 4 and a bead chain 5, and a central shaft 6. The bead roller 2 is used for mounting the bead chain 5 and is disposed on one side of the fixing base 1. The stopper 3 is used to position the bead roller 2 and the fixing cap 4 is covered on an outer side of the stopper 3 for protecting the bead chain 5 from falling off.

The roller blind controller of the present invention comprises a plurality of locking strips 31 set around an outer end of the stopper 3 while a plurality of locking slots 41 is disposed on the fixing cap 4. The locking strips 31 and the locking slots 41 are corresponding to and locked with each other.

As shown in Fig. 1 to Fig. 4, the difference between the controller of the present invention and the prior art is in the assembly structure and technique of the bead chain 5. First a gear set for transmission is mounted in the fixing base 1. Then the bead roller 2 is arranged at one side of a fixing base 1 and one side of the bead roller 2 is set with the stopper 3 for stopping the bead roller 2. The central shaft 6 is passed through the center of the stopper 3 and the fixing base 1 to be fastened and positioned. While assembling the bead chain 5, the bead chain 5 is wound around the bead roller 2. Then the fixing cap 4 is set over the bead roller 2 and the stopper 3 for preventing the bead chain 5 from falling off.

When the fixing cap 4 is covered on the stopper 3, the locking strips 31 around the stopper 3 are aligned with the locking slots 41 correspondingly so that the locking strips 31 are locked with and positioned in the locking slots 41. And the fixing cap 4 is assembled on the stopper 3. Next for better locking effect, a plurality of stopping bars 32 is disposed around an inner end of the stopper 3. The stopping bars 32 and the locking strips 31 are arranged in a staggered manner. The fixing cap 4 is disposed with a plurality of positioning slots 42 corresponding to the stopping bars 32. The stopper 3 and the fixing cap 4 are assembled with and fixed by each other easier by the stopping bars 32 mounted into the positioning slots 42 correspondingly.

In consideration of assembly orientation, a mistake-proofing structure is provided. A fool-proofing or alignment recess 33 is formed on surface of the outer end of the stopper 3 while a corresponding fool-proofing or alignment protrusion 43 is set on the fixing cap 4. By the fool-proofing recess 33 and the fool-proofing protrusion 43 engaging with each other, the fixing cap 4 is arranged on the stopper 3 precisely.

In summary, the present invention has the following advantages compared with the structure available now: 1. The fixing cap and the stopper are assembled with and positioned by each other by the locking strips and the locking slots locked with each other. By such easy locking technique, the bead chain is mounted and positioned conveniently. 2. The fixing cap and the stopper are assembled with each other more firmly and stably by the stopping bars mounted in the positioning slots correspondingly. 3. The fixing cap is assembled in a certain orientation precisely by a foolproofing protrusion corresponding to a fool-proofing recess. The mistakeproofing design prevents incorrect assembly.

Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details, and representative devices shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

Claims

1. A roller blind controller for mounting a bead chain comprising: a fixing base, a bead roller used for mounting the bead chain and being disposed on one side of the fixing base; a stopper used for positioning the bead roller; and a fixing cap located on the stopper for protecting the bead chain from falling off; wherein the stopper is arranged with a plurality of locking strips around an outer end thereof and the fixing cap is set with a plurality of locking slots; the locking strips and the locking slots are locked with and positioned by each other correspondingly.

2. A roller blind controller according to claim 1, wherein a plurality of stopping bars is set around an inner end of the stopper; the stopping bars and the locking strips are arranged in a staggered manner; the fixing cap is disposed with a plurality of positioning slots that is mounted with the stopping bars correspondingly.

3. A roller blind controller according to claim 1 or 2, wherein a fool-proofing recess is formed on surface of the outer end of the stopper while a foolproofing protrusion is disposed on the fixing cap and engageable in the fool-proofing recess.