Curtain controller for easily assembling bead chain

Abstract

A curtain controller for easily assembling a bead chain thereof is provided. A bead chain turntable is disposed on an assembling terminal surface of a fixing seat. A positioning seat is combined with the fixing seat to clamp and position the bead chain turntable. A protective cover is assembled on an outer side of the positioning seat. A shielding part is disposed at one side of the protective cover to correspond to an upper edge of the assembling terminal surface of the fixing seat. A fastening groove is disposed at an outer edge of the assembling terminal surface of the fixing seat. A fastening flange is disposed on the shielding part of the protective cover to be inserted into and combined with the fastening groove. A ladder section is formed between a lower side of the fastening flange and the shielding part.

Claims

1. A curtain controller having a bead chain, comprising: a fixing seat having an assembling terminal surface, wherein a fastening groove is formed adjacent an outer rim of the assembling terminal surface of the fixing seat; a bead chain turntable disposed on the assembling terminal surface of the fixing seat; a bead chain partially surrounding the bead chain turntable; a positioning seat combined with the fixing seat to clamp the bead chain turntable against the fixing seat, a portion of the bead chain and the bead chain turntable thereby being disposed between the positioning seat and the fixing seat, wherein a plurality of fastening strips and positioning strips are alternately disposed on an outer periphery of the positioning seat; and a protective cover fastened against an outer side of the positioning seat, wherein: the protective cover includes a plurality of fastening slots and a plurality of positioning slots for respectively receiving the fastening strips and the positioning strips of the positioning seat, the protective cover includes a shielding part configured to extend to an upper edge of the assembling terminal surface of the fixing seat for shielding the bead chain turntable and an upper part of the bead chain to block the bead chain from sliding along the assembling terminal surface, and a fastening flange is disposed on the shielding part to correspond to the fastening groove, and a ladder section is formed between a lower side of the fastening flange and the shielding part.

2. The curtain controller of claim 1, wherein the outer periphery of the positioning seat is formed with a groove, and the protective cover is formed with a bump to be inserted into the groove for fastening to each other.

3. A curtain controller having a bead chain, comprising: a fixing seat having an assembling terminal surface; a bead chain turntable disposed on the assembling terminal surface of the fixing seat; a bead chain partially surrounding the bead chain turntable; a positioning seat combined with the fixing seat to clamp the bead chain turntable against the fixing seat, a portion of the bead chain and the bead chain turntable thereby being disposed between the positioning seat and the fixing seat, wherein a plurality of fastening strips and positioning strips are alternately disposed on an outer periphery of the positioning seat; and a protective cover fastened against an outer side of the positioning seat, wherein: the protective cover includes a plurality of fastening slots and a plurality of positioning slots for respectively receiving the fastening strips and the positioning strips of the positioning seat, the protective cover includes a shielding ring configured to extend from an outer rim of the protective cover for shielding an outer periphery of the bead chain turntable to block the bead chain from sliding along the assembling terminal surface, and a through hole is defined at a bottom of the shielding ring for passage of the bead chain through the shielding ring.

4. The curtain controller of claim 3, wherein the shielding ring has guiding inclined surfaces disposed on two sides of the through hole.

5. The curtain controller of claim 3, wherein the outer periphery of the positioning seat is formed with a groove, and the protective cover is formed with a bump to be inserted into the groove for fastening to each other.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a three-dimensional exploded structure diagram of this invention.

(2) FIG. 2 is a partial three-dimensional exploded structure diagram of this invention.

(3) FIG. 3 is a three-dimensional assembling cross-sectional structure diagram of this invention.

(4) FIG. 4 is an assembling cross-sectional structure diagram of this invention in a side view.

(5) FIG. 5 is a partial three-dimensional exploded structure diagram according to another embodiment of this invention.

(6) FIG. 6 is a partial three-dimensional exploded structure diagram according to yet another embodiment of this invention.

DETAILED DESCRIPTION

(7) To more completely and clearly illustrate the technical means and effects of this invention, the detailed descriptions are set forth below. Please refer to the disclosed figures and the reference numbers.

(8) First, please refer to FIGS. 1 and 2, which are a three-dimensional decomposed structure diagram of this invention and a partial three-dimensional decomposed structure diagram of this invention, respectively. The curtain controller comprises a fixing seat 1, a bead chain turntable 2, a bead chain 3, a positioning seat 4, and a protective cover 5. One side of the fixing seat 1 forms an assembling terminal surface 11 for disposing the bead chain turntable 2. Several recess parts 21 are arranged to surround the periphery of the bead chain turntable 2, such that the bead chain 3 can surround the bead chain turntable 2, and beads 31 of the bead chain 3 are inserted in the recess parts 21 of the bead chain turntable 2. The positioning seat 4 and the fixing seat 1 are combined to clamp and fix the bead chain turntable 2 between the fixing seat 1 and the positioning seat 4. Several fastening strips 41 and a foolproof groove 42 are disposed on an outer periphery of the positioning seat 4, and a protective cover 5 is assembled and fixed on an outer side of the positioning seat 5. Several fastening slots 52 and a foolproof bump 53 are disposed on the protective cover 5 to respectively correspond to the fastening strips 41 and the foolproof groove 42. In order to reach a better fastening effect, several positioning strips 43 are further disposed on the outer periphery of the positioning seat 4. The positioning strips 43 and the fastening strips 41 are alternatively disposed, and positioning slots 54 are disposed on the protective cover 5 to fit the positioning strips 43. A shielding part 51 is prominently disposed at one side of the protective cover 5 to correspond to an upper edge of the assembling terminal surface 11 of the fixing seat 1. The bead chain turntable 2 and the bead chain 3 are shielded by the shielding part 51.

(9) A fastening groove 111 is disposed at an outer rim of the assembling terminal surface 11 of the fixing seat 1. A fastening flange 511 is disposed on the shielding part 51 of the protective cover 5 to fit the fastening groove 111. A ladder section 512 is disposed between a lower side of the fastening flange 511 and the shielding part 51.

(10) Please refer to FIGS. 3 and 4, which respectively are a three-dimensional assembling cross-sectional structure diagram of this invention and an assembling cross-sectional structure diagram of this invention in a side view. When the parts above are assembled to combine and fix the positioning seat 4 and the fixing seat 1, the bead chain turntable 2 is fasten between the positioning seat 4 and the fixing seat 1. After the bead chain 3 is installed on the bead chain turntable 2, the protective cover 5 is assembled on the outer side of the positioning seat 4. In the assembling of the protective cover 5, the foolproof bump 53 of the protective cover 5 are corresponding to the foolproof groove 42 of the positioning seat 4, the shielding part 51 of the protective cover 5 shields the turntable 2 and an upper part of the bead chain 3, and the fastening flange 511 of the protective cover 5 is inserted and fastened in the fastening groove 111 of the assembling terminal surface 11 of the fixing seat 1. The protective cover 5 is then pressed, so that the fastening slots 52 of the protective cover 5 are corresponding to the fastening strips 41 on the outer peripheral side of the positioning seat 4 to combine and fix the protective cover 5 to the fixing seat 1. Therefore, when the pulling direction of the bead chain 3 is deviated or the pulling force is too large, the bead chain 3 can be blocked from sliding and inserting between the shielding part 51 of the protective cover 5 and the assembling terminal surface 11 of the fixing seat 1. This is because that the fastening flange 511 of the protective cover 5 is inserted in to the fastening groove 111 of the fixing seat 1, and the ladder section 512 is formed between the lower end of the fastening flange 511 and the shielding part 51.

(11) Furthermore, please refer to FIGS. 5 and 6, which are a partial three-dimensional decomposed structure diagram according to another embodiment of this invention and a partial three-dimensional decomposed structure diagram according to yet another embodiment of this invention. In this invention, a shielding ring 55 may be disposed on an outer rim of one terminal, corresponding to the assembling terminal surface 11 of the fixing seat 1, of the protective cover 5 to shield an outer periphery of the turntable 2. A through hole 551 is disposed on a bottom side of the shielding ring 55, and guiding inclined surfaces 552 are disposed on two sides of the through hole 551 for the bead chain 3 sliding thereon. In the assembling, the bead chain 3 penetrates the through hole 551, and then the bead chain 3 is installed on the bead chain turntable 2. The protective cover 5 is assembled and fixed on the outer side of the positioning seat 4. When the pulling direction of the bead chain 3 is deviated or the pulling force is too large, the bead chain 3 will be limited by the through hole 551 to prevent the bead chain 3 from sliding and inserting between the protective cover 5 and the fixing seat 1.

(12) In light of the foregoing embodiments of this invention, it can be known that the bead chain can be stopped to prevent from sliding and inserting between the shielding part of the protective cover and the assembling terminal surface of the fixing seat when the pulling direction of the bead chain is deviated or the pulling force is too large. Therefore, the practical effect of the curtain controller can be further increased.