ES2924306T3 - Roller blind - Google Patents

Abstract

The present invention relates to a roller shutter comprising a control device (1) and a joint assembly (2). The control device (1) comprises a winding mechanism (11), a solenoid valve (12), a pushing mechanism (14), a front cover (15) and a damper. After the solenoid valve (12) is energized, the solenoid valve (12) drives the pushing mechanism (14) to push against the front cover (15) to detach the front cover (15) from an engaging part of the mechanism. winding. (11), and the winding mechanism (11) is not subjected to a damper resistance. A curtain fabric (A) is not affected by the resistance of the damper and can be quickly lowered by gravity. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Roller blind

FIELD OF THE INVENTION

The present invention relates to a roller blind, and more particularly to a roller blind that can lower a curtain fabric rapidly.

BACKGROUND OF THE INVENTION

Roller shutters installed inside buildings, such as shutters, window shades, or door shades that can be rolled up and down, are used to shield views from outside the building, preventing them from being discovered or eavesdropped on. the people in the building.

Document US 2017/226799 A1 discloses a roller blind comprising an articulated assembly including an outer tube connected to a curtain fabric; and a control device, disposed at an end of the outer tube and engaged with the outer tube, the control device comprising a winding mechanism, having an engaging portion; a solenoid valve; a pushing mechanism movably disposed on the winding mechanism, the pushing mechanism being connected with the solenoid valve; a front cover, engaged with the engagement part of the winding mechanism, the front part being connected with the pushing mechanism; and wherein after activating the solenoid valve, the solenoid valve drives the push mechanism to contract to remove pressure from the rotating brake plates, thereby allowing the awning to drop partially or completely. Furthermore, the roller shutter could comprise a damper.

Taiwan Utility Model Publication No. M318394 discloses a self-descending controller for window shades, which is enclosed in a casing and comprises a toothed chain, a clutch, a flat wire spring, a sleeve, a worm gear, and a gear. endless screw. A plurality of fan blades protrude outwardly from a circumferential surface of the right end of the sprocket, and a hub is formed at the left end of the sprocket. The clutch is arranged on the hub. Two symmetrical lugs on the inner wall of the hub at the left end of the chain sprocket combine with a rotating thread on the outer wall of the clutch, so that the lugs can move on the thread. The flat wire spring is mounted on the right end of the sleeve. The spindle at the right end of the worm gear is configured to locate the above device. The gear-shaped boss at the top of the clutch meshes with the boss at the end of the worm wheel spindle. The worm gear is connected to the worm gear hub. Through a connecting element, a locating pin and a worm shaft housing, the worm gear is fixed in a worm shaft housing groove of the casing. The entire worm assembly is then placed into the worm shaft housing slot in the housing so that the worm gear meshes with the worm. During the descent, there is no phenomenon that the curtain becomes unbalanced because the user pulls the ball chain inappropriately. The curtain can lower automatically. It is not necessary for the operator to continue pulling the ball chain. However, in the aforementioned patent, when the curtain needs to be lowered quickly, the curtain slows down because the worm gear is in mesh with the worm. Therefore, the curtain cannot be lowered quickly.

Accordingly, the inventor of the present invention has dedicated himself based on his many years of practical experience to solve these problems.

SUMMARY OF THE INVENTION

The present invention provides a roller blind that can lower a curtain fabric quickly according to independent claim 1. Dependent claims 2-13 show further embodiments of a similar roller blind.

In accordance with the present invention, a roller blind is provided. The roller shutter comprises an articulated assembly, including an outer tube connected to a curtain fabric; and a control device, disposed at one end of the outer tube and engaged with the outer tube. The control device comprises a winding mechanism, which has an engaging part; a solenoid valve, arranged in the winding mechanism; a pushing mechanism movably disposed on the winding mechanism, the pushing mechanism being connected with the solenoid valve; a front cover, engaged with the engaging part of the winding mechanism, the front cover being connected with the pushing mechanism; and a damper, arranged in the winding mechanism. In which, after the solenoid valve is activated, the solenoid valve drives the pushing mechanism to push against the front cover so as to separate the front cover from the nesting part, and the winding mechanism is not subjected to a damper resistor to drive the outer tube to rotate to lower the curtain fabric.

According to the invention, the winding mechanism includes a winding wheel, an inner cylinder and an outer cylinder. The winding wheel has an action part connected to the inner cylinder. The nesting part includes a first nesting part disposed on the inner cylinder and a second nesting part disposed on the outer cylinder. The inner cylinder and the outer cylinder are detachably engaged with the front cover through the first engaging part and the second engaging part.

Preferably, the control device further comprises a fixing housing. The damper is a first elastic element. The first elastic element firmly surrounds the fixing housing. The first elastic element has a protruding part. The action part of the winding wheel is an extension piece. The extension piece extends into the inner cylinder. The inner cylinder has a locking part corresponding to the extension piece. An operating space is defined between the locking part and the extension part. The protruding part of the first elastic element extends into the operating space. Through the extension part for pushing against the projecting part of the first elastic element, the first elastic element can be released from the fixing housing.

Preferably, the first engaging part of the inner cylinder is a projection. The projection releasably fits into a snap-in groove in the front cover.

Preferably, the second outer cylinder engaging portion is a plurality of raised blocks. The plurality of raised blocks detachably engages a plurality of nesting blocks on the front cover.

Preferably, the pusher mechanism includes a shaft, a second elastic member, and a screw. The second elastic element is arranged on the axis. The shaft is connected with the solenoid valve. The shaft is locked to the front cover by the screw. The fixing housing has a retaining wall corresponding to the second elastic element. When the solenoid valve is activated, the shaft is controlled to extend, so that the front cover is pushed by the shaft to separate from the winding mechanism, and the second elastic element abuts against the retaining wall to be compressed and store elastic potential energy. After the solenoid valve turns off, the second elastic element releases the elastic potential energy to return the shaft, and the front cover engages with the winding mechanism.

Preferably, the control device further comprises a fixing housing. The solenoid valve is arranged in the fixing housing.

Preferably, the roller shutter further comprises an outer rod arranged in the outer tube and a limiting mechanism arranged in the outer rod and engaged with the outer tube. The limiting mechanism includes an inner tube around one end of the outer rod, a slider and a limiting housing rotatably movable in the inner tube. The slider has a first threaded part. The inner tube has a second threaded part. The first threaded part of the slider is engaged with the second threaded part of the inner tube. The outer tube has a limiting rib located in a limiting part of the slider. When the outer tube is rotated to lower the curtain fabric, the outer tube drives the slider to rotate and move on the inner tube along the limiting rib in cooperation with the second threaded portion. When the slider is pushed against the limiter housing, the slider forces the outer tube to stop rotating.

Preferably, the slider is a first slider. The limiting housing includes a second slider and a damping elastic element. The elastic damping element is disposed between the inner tube and the second slider. When the first slider is pushed against the second slider, the damping elastic member stores damping elastic potential energy, so that the second slider stops rotating. When the first slider moves away from the second slider, the elastic damping element releases the elastic damping potential energy to return the second slider.

Preferably, the slider has a first coupling part. The limiting housing has a second coupling part. When the slider is pushed against the limit housing, the first coupling part engages the second coupling part.

Preferably, the roller shutter further comprises a glue housing arranged at another end of the outer tube. An inner rod is provided in the tail housing. The inner rod is connected with the outer rod. When an operating part of the inner rod is operated to rotate the inner rod, the inner rod drives the outer rod to rotate relative to the outer tube so that the slider rotates on the inner tube to adjust the distance between the slider and the limiter housing.

Preferably, the inner rod includes a first coupling element. A second coupling element is arranged in the glue housing. An elastic return element surrounds the inner rod. When the first inner rod coupling member disengages from the second tail housing coupling member by operating the operating part, the return elastic member stores return elastic potential energy, and the inner rod drives the outer rod to turn relative to the outer tube. When the operating part is released, the return elastic member releases the return elastic potential energy to return the inner rod, so that the first coupling member of the inner rod engages with the second coupling member.

Preferably, the second coupling element is coupled to the tail housing by a C-shaped retaining ring.

Preferably, the roller shutter further comprises a first sleeve arranged on the outer tube and engaged with the outer tube. A glue housing is provided at another end of the outer tube. An adjustment element and a second sleeve are arranged in the tail housing. An elastic brake element firmly surrounds the tail housing. An auxiliary elastic member is connected to the first sleeve and the second sleeve. When the adjusting member is rotated, the adjusting member is pushed against a protruding brake part of the elastic brake member so that the elastic brake member is released from the tail housing, the adjusting member drives the second sleeve so that rotate relative to the first sleeve, and the auxiliary elastic member stores auxiliary elastic potential energy. When the adjusting member stops rotating, the second sleeve is pushed against the brake protruding part, and the brake elastic member tightly surrounds the tail housing so that the auxiliary elastic member maintains the auxiliary elastic potential energy.

According to the above technical characteristic features, the following effects can be achieved:

1. After the solenoid valve is activated, the front cover is separated from the nesting part of the winding mechanism, the winding mechanism is freed from the resistance of the first elastic member, and the curtain fabric can be quickly lowered by gravity.

2. When there is an urgent need to lower the curtain cloth for concealment, the user only needs to activate the solenoid valve to disengage the front cover from the engaging part of the winding mechanism, thereby lowering the curtain cloth. It is not necessary for the user to go near the door/window where the curtain fabric is located to operate the winding wheel, which reduces the risk of being discovered.

3. When the winding wheel is used to lower or wind up the curtain fabric, the extension piece pushes against the protruding part of the first elastic member, so that the first elastic member is released from the fixing housing to rotate relative to the fixing housing, and the winding mechanism can rotate to lower or wind up the curtain fabric.

4. The protrusion of the inner cylinder and the raised blocks of the outer cylinder are detachably fitted into the nesting groove and between the nesting blocks of the front cover, respectively. After the winding wheel pulls the curtain cloth and the inner cylinder is driven by the winding wheel, the outer cylinder and the front cover are joined by the inner cylinder to lower and wind the curtain cloth.

5. When the winding wheel stops pulling the curtain fabric, the locking part of the inner cylinder pushes against the projecting part of the first elastic member, so that the first elastic member firmly surrounds the fixing housing again. The first elastic element does not rotate relative to the fixing housing, so that the curtain fabric is positioned without falling off.

6. After the curtain cloth is lowered, the limiting mechanism is set to hold the curtain cloth, preventing the curtain cloth from lowering too much.

7. Through the shock-absorbing elastic element, the impact force when the curtain cloth is clamped can be reduced, preventing excessive impact force from damaging the limiting mechanism.

8. The first engaging part of the slider and the second engaging part of the limiting housing can safely maintain the limiting state, and the shock-absorbing elastic element can avoid the situation that the slider still rotates in the original position and cannot be rotated. hold securely.

9. By operating the operating part of the inner rod with a tool, the distance between the slider and the limiting housing can be adjusted, thus allowing the curtain fabric to be held at the desired height.

10. The elastic return element cooperates with the first coupling element and the second coupling element to retain the inner rod, so that the inner rod no longer rotates and the distance can be maintained after adjustment.

11. The gear can adjust the tension of the auxiliary elastic member and can be held by the brake elastic member, so that the user can adjust the appropriate elastic force of the auxiliary elastic member according to the weight of the curtain cloth.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the roller shutter of the present invention;

FIG. 2 is a cross-sectional view of the roller shutter of the present invention;

FIG. 3 is an exploded view of the control device of the present invention;

FIG. 4 is a perspective view of the control device of the present invention; FIG. 5 is a cross-sectional view taken along line V-V of FIG. 4; FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 4; FIG. 7 is a cross-sectional view taken along line VII-VII of FIG.4; FIG. 8 is an exploded view of the limiting mechanism of the present invention;

FIG. 9 is a perspective view of the limiting mechanism of the present invention;

FIG. 10 is an exploded view of the adjustment mechanism of the present invention;

FIG. 11 is a perspective view of the adjustment mechanism of the present invention;

FIG. 12 is a cross-sectional view of the roller shade, illustrating that after the roller wheel rotates clockwise, the extension member drives the inner cylinder to rotate clockwise;

FIG. 13 is a cross-sectional view of the roller shade, illustrating that after the roller wheel rotates counterclockwise, the extension member drives the inner cylinder to rotate counterclockwise;

FIG. 14 is a cross-sectional view of the roller shutter, illustrating that the solenoid valve is activated to disengage the front cover from the roller mechanism;

FIG. 15 is a cross-sectional view of the roller shutter, illustrating the state in which the first slider does not move;

FIG. 16 is a cross-sectional view of the roller shade showing the first slider pushing against the second slider;

FIG. 17 is a cross-sectional view of the roller shutter, illustrating the state of the damping elastic member when the first slider is not pushed against the second slider;

FIG. 18 is a cross-sectional view of the roller shutter, illustrating the state of the damping elastic member after the first slider is pushed against the second slider;

FIG. 19 is a cross-sectional view of the roller shutter, illustrating the state when the operating part of the inner rod is not operated;

FIG. 20 is a cross-sectional view of the roller shade, illustrating the distance between the first slider and the second slider after the inner rod operating portion is operated;

FIG. 21 is a cross-sectional view of the roller shutter, illustrating the state of the auxiliary elastic member when the gear does not rotate;

FIG. 22 is a cross-sectional view of the roller shutter, illustrating the state of the elastic brake member when the gear does not rotate;

FIG. 23 is a cross-sectional view of the roller shutter, illustrating the state of the auxiliary elastic member after the gear is rotated; Y

FIG. 24 is a cross-sectional view of the roller shutter, illustrating the state of the elastic brake member after the gear is rotated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

Referring to FIG. 1 and FIG. 2, the present invention discloses a roller blind that can lower a curtain fabric (A) rapidly. The roller shutter comprises a control device (1), an articulated assembly (2) and a tail housing (3). The control device (1) is arranged at one end of the articulated assembly (2) and engaged with the articulated assembly (2). The tail housing (3) is arranged at another end of the articulated assembly (2). In detail, the articulated assembly (2) includes an outer tube (21), an outer rod (22), a limiting mechanism (23) and an adjustment mechanism (24). The outer tube (21) is connected with the curtain fabric (A). The control device (1) is engaged with the outer tube (21). The outer rod (22) is arranged in the outer tube (21). The limiting mechanism (23) is provided at one end of the outer rod (22), and the adjustment mechanism (24) is provided at another end of the outer rod (22). The limiting mechanism (23) is arranged on the outer rod (22) and engaged with the outer tube (21). The adjustment mechanism (24) is arranged in the tail housing (3).

Referring to FIG. 3 and FIG. 4, the control device (1) mainly includes a winding mechanism (11), a solenoid valve (12), and a damper. In the embodiment of the present invention, the shock absorber is a first elastic element (13). The control device (1) also includes a push mechanism (14), a front cover (15) and a fixing housing (16).

Referring to FIG. 5 and FIG. 6, the winding mechanism (11) is arranged on the fixing base (16). The winding mechanism (11) includes a winding wheel (111), an inner cylinder (112), and an outer cylinder (113). The winding wheel (111) has an action part connected to the inner cylinder (112). In the embodiment of the invention, the action part of the winding wheel (111) is an extension piece (1111). The extension piece (1111) extends into the inner cylinder (112). The inner cylinder (112) has a locking part (1122) corresponding to the extension piece (1111). A portion of the inner cylinder sidewall (112) is recessed toward the center of the inner cylinder (112) to form the locking portion (1122). An operating space (114) is defined between the locking part (1122) and the extension part (1111). The first elastic element (13) firmly surrounds the fixing housing (16). The first elastic element (13) has a protruding part (131). The protruding part (131) of the first elastic element (13) extends into the operating space (114).

Referring to FIG. 5 and FIG. 7, the winding mechanism (11) has an engagement part. The engagement portion includes a first engagement portion provided on the inner cylinder (112) and a second engagement portion provided on the outer cylinder (113). The first engagement part is a projection (1121). The second nesting part is a plurality of spaced apart raised blocks (1131). The front cover (15) includes a cross-shaped engagement slot (151) and a plurality of spaced engagement blocks (152). The protrusion (1121) of the inner cylinder (112) releasably engages in the engagement groove (151) of the front cover (15). The plurality of raised blocks (1131) of the outer cylinder (113) detachably engage with the plurality of nesting blocks (152) of the front cover (15). In this way, the inner cylinder (112) and the outer cylinder (113) are detachably engaged with the front cover (15). The solenoid valve (12) is arranged in the winding mechanism (11). More specifically, the solenoid valve (12) is provided in the fixing housing (16). Both the solenoid valve (12) and the fixing housing (16) are received in the inner cylinder (112) and in the outer cylinder (113). The pushing mechanism (14) is movably arranged in the winding mechanism (11) and connected to the solenoid valve (12). The pushing mechanism (14) includes a shaft (141), a second elastic element (142), and a screw (143). The second elastic element (142) is arranged on the axis (141). Shaft (141) is connected to solenoid valve (12). The axis (141) of the push mechanism (14) is locked with respect to the front cover (15) by the screw (143), so that the front cover (15) engages with the axis (141) of the push mechanism. (14). The fixing housing (16) has a retaining wall (161) corresponding to the second elastic element (142). The retaining wall (161) is formed by recessing the side wall of the clamp housing (16) towards the center of the clamp housing (16) to form an annular area.

Referring to FIG. 8 and FIG. 9, the outer tube (21) includes a limiting rib (211). The limiting mechanism (23) includes an inner tube (231), a slider, and a limiting housing (232). In the embodiment of the invention, the slider is a first slider (233). The inner tube (231) surrounds one end of the outer rod (22). The inner tube (231) has a square shape. The outer rod (22) also has a square shape. The inner tube (231) is locked with respect to the outer rod (22) by a fixing element. The fixing element may be a pin, a bolt and the like, so that the inner tube 231 and the outer rod 22 do not rotate or move relatively. The first slider (233) rotates on the inner tube (231). The first slider (233) has a limiting part (2331), a first coupling part (2332) and a first threaded part (2333). The limiting rib (211) of the outer tube (21) is located in the limiting part (2331). The inner tube (231) has a second threaded part (2311) and a retaining part (2312). The first threaded part (2333) of the first slider (233) engages with the second threaded part (2311) of the inner tube (231). The limiting housing (232) includes a second slider (2321), a damping elastic element (2322) and a second coupling part (2323). The elastic damping member (2322) is disposed between the inner tube (231) and the second slider (2321). One end of the elastic damping member (2322) is fixedly connected to the second slider (2321), and the other end of the elastic damping member (2322) is fixedly connected to the retaining part (2312) of the tube. inside (231). The second coupling part ⁽ 2323 ⁾ is provided on the second slider (2321). The first coupling part (2332) and the second coupling part (2323) are raised blocks.

Referring to FIG. 10 and FIG. 11, the adjustment mechanism (24) includes an adjustment element, an inner rod (241), a first sleeve (242), an auxiliary elastic element (243), a return elastic element (244), a second sleeve ( 245) and an elastic brake element (246). The adjusting element is a gear (247). The inner rod (241) is locked with respect to the outer rod (22) and has an operating part (2411) disposed at one end of the inner rod (241) away from the outer rod (22). The inner rod (241) includes a first coupling element (2412). The first coupling element (2412) is correspondingly engaged with a second coupling element (31). The second coupling element (31) is coupled to the tail housing (3) by a C-shaped retaining ring (32). In the embodiment of the invention, the operating part (2411) is disposed on the first coupling element (2412). The second sleeve (245) is arranged in the tail housing (3). The first sleeve (242) is disposed on the outer tube (21) and engages with the outer tube (21). As for the outer tube (21), refer to FIG. 9. The auxiliary elastic element (243) is connected to the first sleeve (242) and the second sleeve (245). The elastic return element (244) surrounds the inner rod (241). The elastic brake element (246) firmly surrounds the tail housing (3).

Refer to FIG. 12 and FIG. 13 along with FIG. 3. When the winding wheel (111) is rotated, the extension part (1111) of the winding wheel (111) will be pushed against the protruding part (131) of the first elastic member (13) to release the first elastic member (13) of the fixing housing (16). When the winding wheel (111) is used to lower or wind up the curtain fabric (A) (as for the curtain fabric (A), refer to FIG. 2), the extension piece (1111) pushes against the protruding part (131) of the first elastic element (13) in a clockwise or counterclockwise direction. For example, when the winding wheel (111) is turned clockwise to lower the curtain fabric (A), the extension piece (1111) will be pushed clockwise against the protruding part (131) of the first elastic element ( 13). The protruding part (131) of the first elastic element (13) moves clockwise in the operating space (114) to release the first elastic element (13) from the fixing housing (16) so that it rotates relative to the housing. fixing (16). When the protruding part (131) of the first elastic member (13) rotates to abut against the locking part (1122) of the inner cylinder (112), if the winding wheel (111) continues to rotate clockwise, the extension piece (1111) is continuously pushed against the projecting part (131), so that the inner cylinder (112) is driven to rotate by the locking part (1122) and the projecting part (131) or by the contact of the work piece. extension (1111). Because the protrusion (1121) of the inner cylinder (112) and the raised blocks (1131) of the outer cylinder (113) are detachably nested in the nesting groove (151) and between the nesting blocks (152) of the front cover (15), respectively, after the winding wheel (111) pulls the curtain cloth (A) and the inner cylinder (112) is driven by the winding wheel (111), the outer cylinder ( 113) and the front cover (15) are joined by the inner cylinder (112) to lower the curtain fabric (A). Similarly, when the curtain cloth (A) is to be rolled up, the winding wheel (111) is rotated counterclockwise, and the inner cylinder (112) is rotated counterclockwise by the extension piece (1111). , to roll up the curtain fabric (A).

When the winding wheel (111) stops pulling the curtain cloth (A), for example, by turning the winding wheel (111) counterclockwise to wind the curtain cloth (A), after winding the cloth curtain (A) and when the winding wheel (111) is released, the outer cylinder (113) can rotate the front cover (15) and the inner cylinder (112) clockwise due to the gravity force of the fabric curtain (A). However, after the inner cylinder (112) rotates clockwise, the locking part (1122) of the inner cylinder (112) pushes against the protruding part (131) of the first elastic member (13), so that the The first elastic element (13) again firmly surrounds the fixing housing (16). The first elastic element (13) does not rotate relative to the fixing housing (16), so that the inner cylinder (112), the front cover (15) and the outer cylinder (113) cannot rotate either. Therefore, the curtain cloth (A) is positioned without falling down. This is not shown in the drawings and is only described here.

Referring to FIG. 14 and FIG. 2, After the solenoid valve (12) is activated, the solenoid valve (12) controls the shaft (141) to extend and push the front cover (15), so that the front cover (15) separate from the inner cylinder (112) and the outer cylinder (113). The winding mechanism (11) is free from the resistance of the first elastic element (13), and the curtain fabric (A) can be quickly lowered by gravity, and the second elastic element (142) is pressed against the retaining wall (161) to compress and store elastic potential energy. After the solenoid valve (12) turns off, since the front cover (15) and the shaft (141) are locked and connected by the screw (143), the second elastic element (142) releases the elastic potential energy to return the shaft (141), and the front cover (15) fits with the inner cylinder (112) and the outer cylinder (113) again.

Refer to FIG. 15 and FIG. 16 along with FIG. 2. When the outer tube (21) is rotated to lower the curtain fabric (A), the outer tube (21) drives the first slider (233) to rotate and move on the inner tube (231) along the limiting rib (211) in cooperation with the second threaded part (2311) of the inner tube (231) towards the second slider (2321). When the first slider (233) is pushed against the second slider (2321), the first coupling part (2332) engages the second coupling part (2323).

The first slider (233) is blocked by the second slider (2321) and does not continue to rotate on the inner tube (231). Since the first slider (233) no longer rotates, the outer tube (21) does not rotate. Therefore, the curtain cloth (A) is held so that it does not fall.

Referring to FIG. 16 to FIG. 18, after the first coupling part (2332) of the first slider (233) is coupled to the second coupling part (2323) of the second slider (2321), the first slider (233) still drives the second slider (2321). ) to rotate due to inertia. At this time, one end of the elastic damping member (2322) is twisted by the second slider (2321), but the other end is still fixed on the retaining part (2312) of the inner tube (231). The inner tube (231) is held by the outer rod (22) without turning. The damping elastic member 2322 thus stores damping elastic potential energy, so that the second slider 2321 stops rotating. The first slider (233) is held by the second slider (2321) so that the outer tube (21) stops rotating. In this way, the elastic damping member 2322 can reduce the impact force when the curtain cloth A is subjected (as for the curtain cloth A, refer to FIG. 2), which otherwise This fact maintains the clamping state and can prevent that, although the first slider (233) is blocked by the second slider (2321) and cannot continue to rotate on the inner tube (231), the second slider (2321) still rotates in the direction original position and cannot be held securely. Furthermore, the elastic damping member 2322 can prevent excessive impact force from damaging the limiting mechanism 23 or the entire roller shutter. When the curtain fabric (A) is rolled up, the outer tube (21) drives the first slider (233) to rotate in the reverse direction along the limiting rib (211) in cooperation with the second threaded part (2311). the inner tube (231) to move away from the second slider (2321). At this time, the damping elastic member 2322 releases the damping elastic potential energy to return the second slider 2321. This is not shown in the drawings.

Refer to FIG. 19 and FIG. 20 along with FIG. 2. The operating part (2411) of the inner rod (241) is operated by a tool (B) such as a hex key to rotate the inner rod (241). First, an external force is applied to the inner rod (241) using the tool (B), and the inner rod (241) is pressed toward the outer rod (22), so that the first coupling member (2412) ) of the inner rod (241) is separated from the second coupling element (31) of the tail housing (3). At the same time, the elastic return member 244 around the inner rod 241 is compressed by the inner rod 241 to store a return elastic potential energy. The inner rod (241) can drive the outer rod (22) to rotate relative to the outer tube (21), so that the first slider (233) rotates and moves through the cooperation between the first threaded part (2333) and the second threaded part (2311) of the inner tube (231), to adjust a distance between the first slider (233) and the second slider (2321). The distance corresponds to the length of the curtain fabric (A) to be lowered. For example, the distance is the pitch length of the first threaded part (2333) rotated ten times relative to the second threaded part (2311). After the curtain cloth (A) is lowered, the outer tube (21) rotates ten times, and the first slider (233) is pushed toward the second slider (2321) so that the curtain cloth (A) does not fall off. At this time, the length of the curtain cloth (A) to be lowered will be ten times the circumference of the outer tube (21). In addition to holding the curtain cloth (A) with the limiting mechanism (23) to prevent the curtain cloth (A) from lowering excessively, a user can operate the operation part (241) of the inner rod (241) to adjust the distance between the first slider (233) and the second slider (2321), to hold the curtain fabric (A) at the desired height. After adjusting the distance, the user stops operating the operating part (2411), and the external force is no longer applied to the inner rod (241). The return spring element (244) releases the return spring potential energy to return the inner rod (241), so that the first coupling element (2412) of the inner rod (241) is again coupled to the second coupling element (2412). coupling (31) of the tail housing (3). The inner rod (241) no longer rotates, so the distance can be maintained after adjustment.

Refer to FIG. 21 and FIG. 22 along with FIG. 2. In general, when the curtain fabric (A) is to be rolled up or lowered, the elastic brake member (246) will fit firmly in the glue housing (3). The brake elastic member (246) has a brake protrusion part (2461) which is located between a gear extension part (2471) of the gear (247) and a second sleeve locking part (2451) of the second sleeve ( 245).

Refer to FIG. 20, FIG. 23 and FIG. 24 along with FIG. 2. When the curtain fabric (A) is lowered, the outer tube (21) drives the first sleeve (242) to rotate and further drives the auxiliary elastic member (243) to rotate and store auxiliary elastic potential energy to make it easier to roll up the curtain fabric (A). When the user wants to reduce the force required to wind the curtain cloth (A) according to the weight of the curtain cloth (A), the user can rotate the gear (247). The gear extension part (2471) of the gear (247) pushes against the brake protrusion part (2461) of the brake elastic member (246) to release the brake elastic member (246) from the tail housing (3). After releasing the elastic brake member (246), if the user continues to rotate the gear (247), the gear extension part (2471) will push the protruding brake part (2461) to make contact with the locking part of the gear. second sleeve (2451) from the second sleeve (245). Gear 247 drives second sleeve 245 to rotate relative to first sleeve 242 and outer tube 21, so that auxiliary elastic member 243 stores auxiliary elastic potential energy. After releasing the gear 247, the second sleeve 245 can rotate in the opposite direction to the direction in which the user rotates the gear 247 because the auxiliary elastic member 243 has a tendency to release the auxiliary elastic potential energy . However, after turning the second sleeve (245), the second sleeve locking part (2451) will be pushed against the brake protrusion part (2461). The brake elastic member (246) fits firmly back to the tail housing (3), and the adjusted auxiliary elastic member (243) can be retained to maintain the auxiliary elastic potential energy. When the curtain cloth (A) is to be rolled up, the auxiliary elastic member 243 will release the auxiliary elastic potential energy, so that the user can roll up the curtain cloth (A) with less force. Since the brake elastic member (246) is similar to the first elastic member (13) shown in FIG. 6, is only briefly described herein.

Referring to FIG. 2 and FIG. 3, through the control device (1), when there is an urgent need to lower the curtain cloth (A) to hide, the user only needs to activate the solenoid valve (12) by remote control or switch to disengage the front cover (15) from the engagement part of the winding mechanism (11), that is, the front cover (15) disengages from the inner cylinder (112) and the outer cylinder (113), thus lowering the curtain cloth (A). It is not necessary for the user to approach the door/window where the curtain fabric (A) is located to operate the winding wheel (111), reducing the risk of being discovered. After the curtain cloth (A) is lowered, the curtain cloth (A) can be held at an appropriate height by the limiting mechanism (23), preventing the strong impact force from damaging the roller shutter when the curtain cloth is lowered. curtain (A).

In the present invention, the operations of the limiting mechanism 23 and the adjustment mechanism 24 are designed on the same side, which is convenient for the user to adjust and operate.

Although particular embodiments of the present invention have been described in detail for illustrative purposes, various modifications and improvements may be made without departing from the scope of the present invention. Accordingly, the present invention is not to be limited except by the appended claims.

Claims (13)

1. A roller shutter, comprising: an articulated assembly (2), including an outer tube (21) connected to a curtain fabric (A); Y a control device (1), arranged at one end of the outer tube (21) and engaged with the outer tube (21), the control device (1) comprising: a winding mechanism (11), which has an engaging part; a solenoid valve (12), arranged in the winding mechanism (11); a pushing mechanism (14) movably arranged on the winding mechanism (11), the pushing mechanism (14) being connected with the solenoid valve (12); a front cover (15), fitted with the engaging part of the winding mechanism (11), the front cover (15) being connected with the pushing mechanism (14); Y a damper; wherein after the solenoid valve (12) is activated, the solenoid valve (12) drives the pushing mechanism (14) to push against the front cover (15) so that it separates the front cover (15) from the engaging part, and the winding mechanism (11) is not subjected to a damper resistance to drive the outer tube (21) to rotate to lower the curtain fabric (A); wherein the winding mechanism (11) includes a winding wheel (111), characterized in that said damper is disposed in the winding mechanism and in that said winding mechanism further includes an inner cylinder (112) and an outer cylinder (113), the winding wheel (111) has an action part connected to the inner cylinder (112), the engaging part includes a first engaging part arranged in the inner cylinder (112) and a second engaging part arranged in the outer cylinder (113), the inner cylinder (112) and the outer cylinder (113) are detachably engaged with the front cover (15) through the first engaging part and the second engaging part. 2. The roller shutter as claimed in claim 1, further comprising a fixing housing (16), wherein the damper is a first elastic element (13), the first elastic element (13) firmly surrounds the housing of fixing (16), the first elastic element (13) has a protruding part (131), the action part of the winding wheel (111) is an extension part (1111), the extension part (1111) is extends towards the inner cylinder (112), the inner cylinder (112) has a locking portion (1122) corresponding to the extension piece (1111), an operating space (114) is defined between the locking portion (1122) and the extension part (1111), the protruding part (131) of the first elastic member (13) extends into the operating space (114), through the extension part (1111) to push against the protruding part ( 131) of the first elastic element (13), the first elastic element (13) s e can be released from the fixing housing (16). 3. The roller shutter as claimed in claim 1, wherein the first inner cylinder engagement portion (112) is a projection (1121), and the projection (1121) releasably engages an engagement groove (151) of the front cover (15). 4. The roller shutter as claimed in claim 1, wherein the second outer cylinder engaging part (113) is a plurality of raised blocks (1131), and the plurality of raised blocks (1131) are interlocked. separable with a plurality of nesting blocks (152) of the front cover (15). 5. The roller shutter as claimed in claim 2, wherein the pushing mechanism (14) includes a shaft (141), a second elastic element (142) and a screw (143), the second elastic element (142 ) is arranged on the shaft (141), the shaft (141) is connected with the solenoid valve (12), the shaft (141) is locked with respect to the front cover (15) by the screw (143), the fixing housing (16) has a retaining wall (161) corresponding to the second elastic element (142); when the solenoid valve (12) is activated, the shaft (141) is controlled to extend, so that the front cover (15) is pushed by the shaft (141) to separate from the winding mechanism (11), and the second elastic element (142) bears against the retaining wall (161) to compress and store elastic potential energy; after the solenoid valve (12) is deactivated, the second elastic element (142) releases the elastic potential energy to return the shaft (141), and the front cover (15) engages with the winding mechanism (11) . The roller shutter as claimed in claim 1, further comprising a fixing housing (16), the solenoid valve (12) being disposed in the fixing housing (16). 7. The roller shutter as claimed in claim 1, further comprising an outer rod (22) arranged in the outer tube (21) and a limiting mechanism (23) arranged on the outer rod (22) and engaged with the tube. (21), wherein the limiting mechanism (23) includes an inner tube (231) around one end of the outer rod (22), a slider and a limiting housing (232) rotatably movable in the inner tube (231), the slider has a first threaded part (2333), the inner tube (231) has a second threaded part (2311), the first threaded part (2333) of the slider is engaged with the second threaded part ( 2311) of the inner tube (231), the outer tube (21) has a limiting rib (211) located in a limiting part (2331) of the slider, when the outer tube (21) is rotated to lower the curtain fabric (A ), the outer tube (21) drives the slider to rotate and move on the t inner tube (231) along the limiting rib (211) in cooperation with the second threaded part (2311); when the slider is pushed against the limit housing (232), the slider forces the outer tube (21) to stop rotating. 8. The roller shutter as claimed in claim 7, wherein the slider is a first slider (233), the limit housing (232) includes a second slider (2321) and a damping elastic element (2322), the element damping elastic (2322) is disposed between the inner tube (231) and the second slider (2321); when the first slider (233) is pushed against the second slider (2321), the elastic damping element (2322) stores elastic damping potential energy, so that the second slider (2321) stops rotating; when the first slider (233) moves away from the second slider (2321), the elastic damping element (2322) releases the elastic damping potential energy to return the second slider (2321). The roller blind as claimed in claim 7, wherein the slider has a first engaging part (2332), the limit housing (232) has a second engaging part (2323), when the slider is pushed against the limit housing (232), the first coupling part (2332) is coupled to the second coupling part (2323). 10. The roller shutter as claimed in claim 7, further comprising a glue housing (3) arranged at another end of the outer tube (21), an inner rod (241) that is arranged in the glue housing (3 ), the inner rod (41) being connected to the outer rod (22); When an operating part (2411) of the inner rod (241) is operated to rotate the inner rod (241), the inner rod (241) drives the outer rod (22) to rotate relative to the outer tube ( 21), so that the slider rotates on the inner tube (231) to set a distance between the slider and the limit housing (232). 11. The roller shutter as claimed in claim 10, wherein the inner rod (241) includes a first coupling element (2412), a second coupling element (31) is disposed in the glue housing (3) , an elastic return element (244) surrounds the inner rod (241); when the first coupling element (2412) of the inner rod (241) disengages from the second coupling element (31) of the tail housing (3) by operating the operating part (2411), the elastic return element (244 ) stores return elastic potential energy, and the inner rod (241) drives the outer rod (22) to rotate relative to the outer tube (21); when the operating part (2411) is released, the return elastic member (244) releases the return elastic potential energy to return the inner rod (241), so that the first engaging member (2412) of the inner rod (241) engages with the second coupling element (31). The roller shutter as claimed in claim 11, wherein the second coupling element (31) is coupled to the tail housing (3) by a C-shaped retaining ring (32). 13. The roller shutter as claimed in claim 1, further comprising a first sleeve (242) arranged in the outer tube (21) and engaged with the outer tube (21), a tail housing (3) arranged in another end of the outer tube (21), an adjustment element and a second sleeve (245) arranged on the tail housing (3), an elastic brake element (246) that firmly surrounds the tail housing (3), and a auxiliary elastic member (243) connected to the first sleeve (242) and the second sleeve (245); when the adjusting element is rotated, the adjusting element is pushed against a protruding brake part (2461) of the elastic brake element (246) so that the elastic brake element (246) is released from the tail housing (3). ), the adjusting member drives the second sleeve (245) to rotate relative to the first sleeve (242) and the auxiliary elastic member (243) stores an auxiliary elastic potential energy; when the adjusting element stops rotating, the second sleeve (245) is pushed against the protruding brake part (2461) and the elastic brake element (246) firmly surrounds the tail housing (3) so that the elastic element auxiliary (243) maintains the auxiliary elastic potential energy.