GB2378973A

GB2378973A - Roller curtain with means to prevent detachment of the roller

Info

Publication number: GB2378973A
Application number: GB0120470A
Authority: GB
Inventors: Tetsun Wu
Original assignee: Yuh San Corp Ltd
Current assignee: Yuh San Corp Ltd
Priority date: 2001-08-22
Filing date: 2001-08-22
Publication date: 2003-02-26
Anticipated expiration: 2021-08-22
Also published as: GB0120470D0; DE20114335U1; GB2378973B

Abstract

A roller curtain has positive engagement means at both ends to prevent detachment of the roller from its mountings, e.g. in the case of misalignment of the latter. At one end an element 42 hooks into a recess 13 at the end of a channel 12 in the mount 10. At the other end, both the trunnion 51,52 and the complementary socket 62,63 in the mount 60 are stepped in diameter and the wider portions 51,63 thereby engage in a manner preventing axial withdrawal of the roller.

Description

FIXING SEAT STRUCTURE OF ROLLING CURTAIN BACKGROUND OF THE INVENTION The present invention is related to a fixing seat structure of rolling curtain. The left and right fixing seats are respectively pivotally engaged with a rotary unit and an engaging pivot body.

The left and right fixing seats can be inward biased to pivotally engaged with the rotary unit and the engaging pivot body. Even if the left and right fixing seats are not precisely locked in alignment with each other or are spaced from each other by too long distance, the reel still will not transversely displace and detach and drop down.

Fig. 1 shows a fixing seat for conventional rolling curtain including two fixing blocks 1,2, a reel 3, a curtain fabric 4, a rotary unit 5 and a retainer 6. When assembled, the rotary unit 5 and the retainer 6 are first fitted into two ends of the reel 3.

Then, the fitting post 5'of the rotary unit 5 and the fitting post 6'of the retainer 6 are respectively inserted and located in the sockets 1', 2'of the right and left fixing blocks 1, 2.

The above conventional structure has some shortcomings as follows : 1. The retainer 6 and the rotary unit 5 are simply fitted with the right and left fixing blocks 1, 2 without engaging

therewith. Therefore, in the case that when mounted, the right and left fixing blocks 1, 2 are deflec-ted by a certain angle, a gap Awill exist between the retainer 6 or the rotary unit 5 and the right and left fixing blocks 1, 2. Accordingly, when a user downward pulls the cord 52 for upward rolling or downward unrolling the curtain fabric 4, due to the gap A, the fitting posts 5', 6'of the rotary unit 5 and the retainer 6 tend to up and down or left and right displace within the sockets 1', 2'of the right and left fixing blocks

1, 2. As a result, the fitting posts 5', 6'maybe unplugged t : l t-11-1 from the sockets 1', 2'and the reel 3 may transversely displace and drop down as shown by the arrow of Fig. 1. The dropping curtain may hurt the user.

2. The retainer 6 and the rotary unit 5 are simply fitted with the right and left fixing blocks 1, 2 without engaging therewith. Therefore, in the case that the right and left fixing blocks 1,2 are locked and spaced from each other by a long distance, when operated, the reel 3 also tends to transversely displace and drop down. Therefore, the safety in use of the rolling curtain can be hardly ensured.

Fig. 2 shows another type of fixing block of conventional

rolling curtain including two fixing blocks 1, 2, a reel 3, a curtain tm t fabric 4, a rotary unit 5, a retainer 6 and a resilient U-shaped engaging block 7. When assembled, the rotary unit 5 and the retainer tm z 1 t 6 are first fitted into two ends of the reel 3. Then, the fitting

block 5'of the rotary unit 5 and the fi tting post 6'of the retainer

6 are respectively inserted into the sockets 1', 2'of the right 1 1, and left fixing blocks 1, 2. Then, the U-shaped engaging block 7 is engaged between the right fixing block I and the fitting post 6'of the retainer 6. Under such circumstance, the fitting post 6' of the retainer 6 is prevented from upward or downward displacing.

The above conventional structure has some shortcomings as follows : 1. The retainer 6 and the rotary unit 5 are simply fitted with the right and left fixing blocks 1, 2 without engaging therewith. The resilient engaging block 7 is engaged between the right fixing block 1 and the fitting post 6'of the retainer 6. Therefore, in the case that when mounted, the right and left fixing blocks 1, 2 are deflected by a certain angle, a transverse gap will exist between the retainer 6 or the rotary unit 5 and the right and left fixing blocks 1, 2. Accordingly, the distance between the socket I'of the right fixing block 1 and the fitting post 6'of the retainer 6will be too long. Therefore, when a user downward pulls the cord 52 for upward rolling or downward unrolling

the curtain fabric 4, due to the gap, the fitting posts 5', t. t ! l 6'of the rotary unit 5 and the retainer 6 tend to left or right displace from the sockets 1', 2'of the right and left fixing blocks 1, 2. As a result, the reel 3 may transversely displace and drop down as shown by the arrow of Fig. 2. The

engaging block 7 only serves to prevent the fitting posts from vertically displacing so that the curtain still may drop down to hurt the user.

2. The retainer 6 and the rotary unit 5 are simply fitted with the right and left fixing blocks 1, 2 without engaging therewith. Therefore, in the case that the right and left fixing blocks 1,2 are locked and spaced from each other by a long transverse distance, when operated, the reel 3 also tends to transversely displace. The engaging block 7 only serves to prevent the fitting posts from vertically displacing so that the curtain still may drop down to hurt the use. Therefore, the safety in use of the rolling curtain can be hardly ensured.

SUMMARY OF THE INVENTION It is therefore a primary object of the present invention to provide a fixing seat structure of rolling curtain in which the left and right fixing seats are respectively pivotally engaged with the rotary unit and the engaging pivot body. Therefore, when mounted, in the case that the left and right fixing seats are not precisely locked and are deflected by a certain angle, the left and right fixing seats can still truly attach to the rotary unit and the engaging pivot body without any gap. Therefore, when a user downward pulls the cord, the shock will not make the pivotal latch button and the hooking block jump away or make the reel transversely

displace and detach and drop down. Therefore, the safety in use can be ensured.

It is a further object of the present invention to provide the

above fixing seat structure in which the left and right fixing seats tn tn can be inward biased to pivotally engage with the rotary unit and the engaging pivot body. Therefore, in the case that the right and left fixing seats are spaced from each other by too long distance, after pivotally engaged, the left and right fixing seats will not bound back and the reel will not transversely displace and detach and drop down.

The present invention can be best understood through the following description and accompanying drawings wherein: BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows that conventional fixing blocks of rolling curtain are deflected; Fig. 2 shows that another type of conventional fixing blocks of rolling curtain are deflected; Fig. 3 is a perspective exploded view of the present invention;

Fig. 4 is a perspective assembled view of the present ive assem I invention; Fig. 5 is a sectional assembled view of the present invention; Fig. 6 shows that the fixing seats of the present invention are not locked in alignment with each other; and

Fig. 7 shows that the fixing seats of the present invention

are locked and spaced from each other by too long distance and are in biased.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Please refer to Fig. 3. The present invention includes a left fixing seat 10, a reel 20, a fabric curtain 30, a rotary unit 40,

an engaging pivot member 50 and a right fixing seat 60. The left 1 1 ino seat 60. The left and right fixing seats 10,60 are both made of plastic material.

The front section of inner side of the left fixing seat to has a projecting fitting block 11. The center of the fitting block 11 is formed with a cross-shaped fitting channel 12. The four ends in the fitting channel 12 are all formed with an outward extending hooking recess 13. The rear section of inner side of the left fixing seat 10 is fitted with a cover body 14 for shielding locking screws (not shown). The center of outer end of the fitting body on one side of the rotary unit 40 is provided with a rectangular fitting block 41 with a certain dimension. The rear end of the fitting block 41 is connected with a small diameter hooking block 42. A pull cord 43 is disposed on the rotary unit 40. In addition, a rotary body 44 is disposed on the other side of the rotary unit 40 opposite to the fitting body. The rotary body 44 is connected with the pulling structure of the pull cord 43. The center of outer end of the engaging pivot body 50 is formed with a stepped fitting post 51 with larger outer section and smaller inner section. The large diameter section of the fitting post 51 forms a pivotal latch button 52. The inner

side is provided with a sleeve 53 for fitting with the reel 20. The center of inner side of the right fixing seat 60 is formed with a guide channel 61. The front side of middle section of the guide channel 61 communicates with a pivotal fitting socket 62. The bottom of the pivotal fitting socket 62 is formed with a pivotal latch socket 63 with larger diameter. The rear section of inner side of the right fixing seat 60 is fitted with a cover body 64 for shielding the locking screws (not shown).

When assembled, as shown in Figs. 4 and 5, the left and right fixing seats 10,60 are first locked on suitable positions of the wall of ceiling and fitted with the cover bodies 14,64 for shielding the locking screws. The fabric curtain 30 is wound around the reel 20. Then the rotary body 44 of the rotary unit 40 and the sleeve 53 of the engaging pivot body 50 are respectively fixedly fitted with two ends of the reel 20. The fitting block 41 of the rotary unit 40 is fitted into the fitting channel 12 of the left fixing seat 10. Thereafter, a downward pressing force is exerted onto the rotary unit 40 to make the hooking block 42 thereof latched in the hooking recess 13 of the left fixing seat 10. Then, the fitting post 51 of the engaging pivot body 50 is pivotally fitted into the guide channel 61 of the right fixing seat 60. The fitting post 51 is also slidably fitted into the pivotal fitting socket 62 of the right fixing seat 60. The pivotal latch button 52 is at the same time pivotally latched in the pivotal latch socket 63 of the right fixing seat 60. At this time, by means of the pivotal engagement between the rotary unit 40 and the engaging pivot body 50, the reel 20 is

firmly located on the left and right fixing seats 10, 60. Also, the cord 43 can be downward pulled to upward roll the fabric curtain 30 or downward unroll the fabric curtain 30.

The left and right fixing seats 10,60 are respectively pivotally engaged with the rotary unit 40 and the engaging pivot body 50. Therefore, when mounted, in the case that the left and right fixing seats 10,60 are not precisely locked in alignment with each other and are deflected by a certain angle (as shown in Fig. 6), by means of the latching of the hooking block 42 of the rotary unit 40 with the hooking recess 13 of the left fixing seat 10, no gap will exist between the rotary unit 40 and the left fixing seat 10.

Also, the pivotal latch button 52 of the engaging pivot body 50 is latched with the pivotal latch socket 63 of the right fixing seat 60 and the fabric curtain 30 is vertically pulled, no gap will form between the engaging pivot body 50 and the right fixing seat 60.

Therefore, even if the left and right fixing seats 10,60 are not precisely locked and are deflected by a certain angle, the reel 20 can be still truly located. In addition, the left and right fixing seats 10,60 are both made of plastic material. Therefore, in the case that the right and left fixing seats 10,60 are locked and spaced from each other by too long distance (as shown in Fig. 7), the left and right fixing seats 10,60 can be biased toward the reel 20 to pivotally engage with the rotary unit 40 and the engaging pivot body 50. The hooking block 42 of the rotary unit 40 will be always latched in the hooking recess 13 of the left fixing seat 10 and the pivotal latch button 52 of the engaging pivot body 50 will be also

always latched in the pivotal latch socket 63 of the right fixing seat 60. Therefore, after the external force disappears, the left and right fixing seats 10,60 will not bound back due to the plasticity thereof. Accordingly, the reel 20 will not be untruly located due to the excessively long distance between the left and right fixing seats 10, 60.

According to the above arrangement, the present invention has

the following advantages : tm 1. The left and right fixing seats 10,60 are respectively pivotally engaged with the rotary unit 40 and the engaging pivot body 50. Therefore, when mounted, in the case that the left and right fixing seats 10,60 are not precisely locked and are deflected by a certain angle, the left and right fixing seats 10,60 can still truly attach to the rotary unit 40 and the engaging pivot body 50 without any gap. Therefore, when a user downward pulls the cord 43, the shock will not make the pivotal latch button 52 and the hooking block 42 jump away or make the reel 20 transversely displace and detach and drop down. Therefore, the safety in use can be ensured.

2. The left and right fixing seats 10,60 can be inward biased to pivotally engage with the rotary uni t 40 and the engaging pivot body 50. Therefore, in the case that the right and

left fixing seats 10, 60 are spaced from each other by too t : l

long distance, after pivotally engaged, the left and right fixing seats 10, 60 will not bound back and the reel 20will not transversely displace and detach and drop down.

The above embodiment is only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiment can be made without departing from the spirit of the present invention.

Claims

WHAT IS CLAIMED IS: 1. Fixing seat structure of rolling curtain comprising a left fixing seat, a reel, a fabric curtain, a rotary unit, an engaging pivot member and a right fixing seat, the left and right fixing seats being both made of plastic material, the rear section of inner

side of each of the left and right fixing seats being fitted with t tn a cover body for shielding locking screws, a pull cord and a rotary body connected with the pull cord being disposed on the rotary unit, a sleeve being disposed on inner side of the engaging pivot body for fitting with the reel, said fixing seat structure being characterized in that: the front section of inner side of the left fixing seat has

a projecting fitting block, the center of the fitting block being zn t formed with a fitting channel, the ends in the fitting channel being all formed with a hooking recess ; in the center of outer end of the rotary unit is provided wi th a fitting block, the rear end of the fitting block being connected with a small diameter hooking block;

the center of outer end of the engaging pivot body is formed 1-1 & 1 tI with a stepped fitting post, the large diameter section of the fitting post forming a pivotal latch button; the center of inner side of the right fixing seat is formed

<Desc/Clms Page number 12>

with a guide channel. the front side of middle section of the guide channel communicating with a pivotal fitting socket, the bottom of the pivotal fitting socket being formed with a pivotal latch socket with larger diameter ; and the left and right fixing seats are locked on a wall of ceiling and fitted with the cover bodies for shielding the locking screws, the fabric curtain being wound around the reel, the rotary body of the rotary unit and the sleeve of the engaging pivot body being respectively fixedly fitted with two ends of the reel, the hooking block of the rotary unit being latched in the hooking recess of the left fixing seat without displacement and detachment, the pivot latch button of the engaging pivot body being latched in the pivot latch socket of the right fixing seat without displacement and detachment, whereby when the reel is operated, the reel will not transversely displace and detach to drop down.
2. Fixing seat structure as claimed in claim 1, wherein the fitting channel of the left fixing seat is cross-shaped, whereby when the left fixing seat is locked indifferent direction, the rotary uni t

can be easily fitted and pivotally engaged therein.

: D ZD