CN105569541B - Curtain and its control module - Google Patents

Abstract

A control module for a curtain, comprising: a drive shaft; a sleeve fixed to the drive shaft; a brake member arranged on the sleeve, wherein the brake member prevents the sleeve and the drive shaft from rotating in a locked state so as to lock the curtain piece of the curtain at a position, and the brake member allows the sleeve and the drive shaft to rotate in a released state so as to adjust the curtain piece of the curtain vertically; a release assembly, comprising a control member connected to the brake member, and the control member comprises a rod extending vertically downward along the long axis; a rope A drum and an operating rope, the rope drum is connected to the operating rope; and a clutch is connected to the rope drum, the clutch can couple or decouple the movement of the rope drum and the drive shaft; wherein, when the operating rope is pulled, the rope drum can be driven to rotate and the clutch can be switched to a coupled state, so that the rotation of the rope drum can drive the sleeve and the drive shaft to rotate via the clutch to raise the curtain piece of the curtain; and when the rod rotates around its long axis, the brake member is switched from a locked state to a released state, so that the curtain piece of the curtain can be lowered by its own gravity.

Description

Curtain and its control module

This application is a divisional application of an invention patent application with an application date of February 23, 2012, an application number of 201210042095.4, and an invention title of "curtain and its control module".

【Technical field】

The present invention relates to a curtain. The curtain has a control module, through which the control module is connected with the driving shaft of the curtain, and the curtain sheet of the curtain can be raised or lowered.

【current technology】

There are many types of blinds for curtains, such as venetian blinds, Roman blinds, and honeycomb blinds. When the curtain of the curtain is lowered, the window can be covered and the sunlight entering the room can be reduced, and the privacy of the room can be improved and others can be prevented from seeing the situation in the room from the window. When the curtain of the curtain is raised, the user can see a complete and clear view through the window, and sunlight can also enter the room from the window. Generally speaking, the curtain can be raised or lowered by manipulating the operation rope, the user can pull down the operation rope to raise the curtain, and let go of the operation rope to lower the curtain.

At present, in the curtains in the market, the operating rope of the curtain is connected to the driving shaft inside the curtain to raise or lower the curtain sheet. When the operating cord is pulled down, it causes the drive shaft to rotate and retracts the support cord, thereby raising the shade. When the operating cord is released, it can cause the drive shaft to rotate in the opposite direction to lower the shade. However, when the number of slats is increased, the range of motion of the operating cord is considerably large, and the length of the operating cord is also very long when the slats are raised.

Besides, when the length of the operating rope is too long, it looks very unsightly. And for many users, especially small children, it creates a great danger. Because the operating rope is too long, it is likely to wrap around the child's neck and cause the child to suffocate. In order to avoid this hazard, it is important to maintain the operating rope in a high position so that small children cannot touch the operating rope. But this is difficult to accomplish for the curtain in the market at present. Because generally speaking, when the curtain is folded, the operation rope will be in the lower position, but when the user pulls the operation rope to expand the curtain, the operation rope will be moved to a higher position, and when the operation Danger to small children when the rope swings in a low position.

It is difficult for the user to be able to manipulate the long operating rope naturally, and the user often has to move the arm to pull the operating rope downwards. However, when the user's arm is fully stretched out and the operating rope cannot be further pulled down, the user must first let go of the operating rope, so that when the released operating rope moves to a higher position, the user can then move to a higher position. Hold the operating rope with your hand, and continue to pull down the operating rope to move the curtain to the desired height. So it takes a lot of time and is very troublesome to operate.

【Content of invention】

The present invention relates to a curtain and its control module. Through the control module, the user can use a short operating rope to drive the curtain up and down. By rotating a control member of the control module, the control module can be switched to an unlocked position, allowing the bottom of the curtain to automatically lower.

According to an embodiment of the present invention, a control module for curtains is provided, comprising: a drive shaft; a sleeve fixed to the drive shaft; a braking member disposed on the sleeve, wherein the When the brake is in the locked state, it prevents the sleeve and the drive shaft from rotating so as to lock the slats of the curtain in place, and when the brake is in the unlocked state, it allows the sleeve and the drive shaft to rotate, In order to adjust the curtains vertically; a lock release assembly, which includes a control member, the control member is connected with the brake member, and the control member includes a rod vertically downward along the long axis; a rope a drum and an operation rope, the rope drum is connected with the operation rope; and a clutch, which is connected with the rope drum, and the clutch can couple or decouple the motion of the rope drum and the drive shaft; wherein, the When the operation rope is pulled, it can drive the rope drum to rotate and turn the clutch into a coupled state, so that the rotation of the rope drum can drive the sleeve and the drive shaft to rotate through the clutch, so as to raise the curtain of the curtain; When the bar rotates around its long axis, the braking member is switched from a locked state to an unlocked state, so that the curtain of the curtain will descend through its own gravity.

According to an embodiment of the control module, the braking member includes a spring, and the spring is arranged around the sleeve. When the spring tightens the sleeve, it is in a locked state, and when the spring is loosened, it is in an unlocked state. .

According to an embodiment of the control module, the unlocking assembly further includes: a ring, which can rotate around the pivot axis of the drive shaft, and the ring is connected to the spring; and a plurality of transmission parts are arranged on the Between the ring and the control member, when the bar rotates around its long axis, through the action of the plurality of transmission parts, the ring can be driven to rotate an angle around the pivot axis of the drive shaft, so that the spring release.

According to an embodiment of the control module, the spring has a first protruding end and a second protruding end, the first protruding end is connected with a housing of the control module, and the second protruding end is connected with the The rings are connected.

According to an embodiment of the control module, the plurality of transmission parts includes a first transmission part and a second transmission part, the ring part has a protruding tooth part, and the protruding tooth part meshes with the first transmission part, The second transmission part can be connected with the control part and engage with the first transmission part through a gear transmission, wherein the gear transmission can be a helical gear or a worm gear transmission.

According to an embodiment of the control module, the second transmission member is a hollow body, and the operating rope passes through the second transmission member.

According to an embodiment of the control module, when the operating rope is pulled, the braking member can be switched to the unlocked state and the curtain of the curtain can be raised; and when the rope drum is rotated to retract the operating rope, the The brake is locked and the clutch is uncoupled.

According to an embodiment of the control module, the operating rope extends through the inner side of the rod, and the operating rope slides relative to the rod when pulled.

According to an embodiment of the control module, the operating rope is fixed to the rod so that the operating rope can be pulled synchronously when the rod moves downward.

According to an embodiment of the control module, the control member further includes a bolt connected to the top end of the rod, and the bolt is detachably engaged with the second transmission member.

According to an embodiment of the control module, the bolt body can be provided with a convex tooth end, when the bolt body is engaged with the second transmission element, the bar can drive the second transmission element through the convex tooth end Rotate, and when the bar moves downward, the protruding tooth end will disengage from the second transmission member.

According to an embodiment of the control module, a safety device is also provided, wherein the safety device includes: an inner ring, which is slidably assembled with the bar, so that the inner ring can move along the bar relative to the bar. The pivot shaft is displaced, but the inner ring rotates synchronously with the rod; and an outer cylinder, which is pivotally connected with the rod, so that the outer cylinder can rotate relative to the rod; wherein, the outer cylinder and the inner The rings respectively have a plurality of contacting surfaces which are in contact with each other, the plurality of contacting surfaces are approximately perpendicular to the pivot axis of the rod, and the plurality of contacting surfaces respectively have a unidirectional saw-off surface.

According to an embodiment of the control module, when the outer cylinder rotates in one direction, the inner ring and the control member can be driven to rotate synchronously through the engagement of the plurality of contact surfaces, and when the outer cylinder rotates in the opposite direction , the plurality of contact surfaces push each other and cannot be connected, so that the inner ring moves upwards, while the outer cylinder rotates idly.

According to one embodiment of the present invention, a curtain is provided, comprising: a top rail; a set of curtains; a bottom, which is located at the bottom of the curtains; several suspension ropes, respectively connected to the top rail and the between the bottoms; a plurality of winding rope units are arranged on the top track and connected with the suspension rope; and a control module is set on the top track. The control module includes: a drive shaft, which is assembled with the plurality of rope winding units; a sleeve, which is fixed with the drive shaft; a brake member, which is arranged on the sleeve, wherein the brake The locking part prevents the sleeve and the drive shaft from rotating so as to lock the bottom in place, while the detent allows the sleeve and the drive shaft to rotate in the unlocked state so that the bottom can be Vertical adjustment; a lock release assembly, which includes a control member, the control member is connected to the braking member, and the control member includes a rod vertically downward along the long axis; a rope drum and an operating rope, The rope drum is connected with the operation rope; and a clutch is connected with the rope drum, and the clutch can couple or decouple the motion of the rope drum and the drive shaft; wherein, when the operation rope is pulled, the It can drive the rope drum to rotate and turn the clutch into a coupled state, so that the rotation of the rope drum drives the sleeve and the drive shaft to rotate through the clutch to raise the bottom; and the rod rotates around its long axis When the brake part is switched from the locked state to the released state, so that the bottom falls through its own gravity.

According to an embodiment of the curtain, the braking member includes a spring, and the spring is arranged around the sleeve. When the spring tightens the sleeve, it is in a locked state, and when the spring is loosened, it is in an unlocked state.

According to an embodiment of the curtain, the unlocking assembly further includes: a ring, which can rotate around the pivot axis of the driving shaft, and the ring is connected to the spring; and a plurality of transmission parts are arranged on the ring When the bar rotates around its long axis, the ring can be driven to rotate around the pivot axis of the driving shaft by an angle through the action of the plurality of transmission parts, so that the spring is released.

According to an embodiment of the curtain, the spring has a first protruding end and a second protruding end, the first protruding end is connected to a housing of the control module, and the second protruding end is connected to the ring connected.

According to an embodiment of the curtain, the plurality of transmission parts includes a first transmission part and a second transmission part, the ring part has a protruding tooth part, and the protruding tooth part meshes with the first transmission part, and the The second transmission part can be connected with the control part and engage with the first transmission part through gear transmission, wherein the gear transmission can be helical gear or worm gear transmission.

According to an embodiment of the curtain, the operating rope is fixed to the rod so that the operating rope can be pulled synchronously when the rod is displaced downward, and the control member also includes a bolt body, the bolt body and the rod The top end of the rod is connected, and the bolt body can move synchronously with the bar, so that the bolt body engages or disengages from the second transmission member.

According to an embodiment of the curtain, when the bolt body is engaged with the second transmission member, the rod can drive the second transmission member to rotate, and when the rod moves downward, the bolt body is driven away from the first transmission member. Two transmission parts.

According to an embodiment of the curtain, when the operating cord is pulled, the braking member can be switched to the unlocked state and the curtain can be raised; and when the rope drum is rotated to retract the operating cord, the braking member is locked and the clutch is decoupled.

【Description of drawings】

FIG. 1 shows a perspective view of a curtain provided with a control module.

FIG. 2 is an exploded view of the control module.

FIG. 3 is a cross-sectional view of the control module.

Fig. 4 is a perspective view of the first coupling part of the clutch.

Fig. 5 is a perspective view of the second coupling part of the clutch.

Fig. 6 is a perspective view of the sleeve fixed to the drive shaft in the control module.

Figure 7 shows a front view of the sleeve.

FIG. 8 shows a side view of part of the control module assembled.

Figure 9 shows a side view of the rope drum in the control module.

FIG. 10 is a perspective view of the assembly of the brake and release components in the control module.

Fig. 11 is an assembled side view of the brake and release components in the control module.

FIG. 12 is a schematic diagram of the operation of the release assembly.

Fig. 13 shows a schematic diagram of the lowering operation of the curtain.

Fig. 14 shows a schematic view of the state of the guide track in the clutch when the curtain is descending.

Fig. 15 shows a schematic diagram of the raising operation of the curtain.

Fig. 16 is a partial cross-sectional view of the rope drum and the first coupling part in the control module when the curtain is raised.

Fig. 17 is a partial cross-sectional view of the first and second coupling elements in the control module when the curtain is raised.

Fig. 18 shows a schematic diagram of part of the control module when the curtain is raised.

Fig. 19 shows a schematic view of the state of the guide rail in the clutch when the curtain is raised.

Fig. 20 is a partial cross-sectional view of the first coupling member and the rope drum in the control module when the rope is retracted.

Fig. 21 is a partial cross-sectional view of the first and second couplers in the control module performing the retraction operation on the rope drum.

Fig. 22 shows a schematic diagram of part of the control module when the rope drum is performing the winding operation rope.

Fig. 23 is a schematic view showing the state of the guide track in the clutch when the rope drum is retracting the operating rope.

Fig. 24 is a cross-sectional view of a safety device installed in the control member.

FIG. 25 is a schematic diagram of a curtain provided by another embodiment of the present invention.

FIG. 26 is an exploded view of the control module in the window shade of FIG. 25 .

FIG. 27 is a schematic diagram illustrating the lowering operation of the curtain in FIG. 25 .

FIG. 28 is a schematic diagram of the curtain in FIG. 25 being raised.

FIG. 29 is a partial cross-sectional view of a control module provided by another embodiment of the present invention.

FIG. 30 is a schematic diagram of a part of the clutch structure in the control module of FIG. 29 .

FIG. 31 is a partial cross-sectional view of the control module in FIG. 29 when the curtain is raised.

FIG. 32 is a schematic diagram of the structure of part of the clutches in the control module of FIG. 31 .

FIG. 33 is a partial cross-sectional view of the control module of FIG. 29 when the curtain is retracting the operating rope.

FIG. 34 is a schematic diagram of the structure of part of the clutches in the control module of FIG. 33 .

【detailed description】

The invention can be implemented in many different embodiments. The embodiments shown in the drawings and described in detail below are preferred embodiments of the present invention. However, the following content is only an embodiment to illustrate the principle of the present invention, and the present invention is not limited to these embodiments.

FIG. 1 shows an embodiment of a curtain 110 . The window covering 110 may include a top rail 112 , a set of panels 114 , and a bottom 116 located below the panels 114 . In addition, in order to control the displacement of the curtain 114 and the bottom 116, the curtain 110 is also provided with a control module 124 including a drive shaft 118, an operating rope 120 (shown in dotted lines) and a control member 122, and several suspension ropes 126 (shown in dotted lines). dotted line) and the rope winding unit 128. A first end of the suspension rope 126 can be connected to the drum of the rope winding unit 128 , and a second end of the suspension rope 126 can be connected to the bottom 116 so that the suspension rope 126 is connected between the top rail 112 and the bottom 116 . When the bottom 116 moves upward toward the top track 112, the window covering 114 can be stowed. The lifting action of the bottom 116 can be achieved by pulling the operation rope 120, so that the control module 124 can transmit the rotation action to the reel (not shown) in the rope unit 128 through the drive shaft 118, so that the rope unit 128 can be retracted. The suspension rope 126 connected between the top rail 112 and the bottom 116 . In addition, the control module 124 can be turned into an unlocked state through the control of the control member 122, so as to allow the drive shaft 118 to rotate, so that the bottom 116 can descend by itself through its own gravity and pull out the suspension rope from the rope winding unit 128 126, thereby stretching the curtain 114, so that the curtain 110 turns into a shielding state. The structure and operation of the control module 124 will be described later in detail.

The kind of the screen 114 is not limited. For example, fabric blinds, honeycomb blinds, venetian blinds, or blinds consisting of several parallel slats can be used.

The kind of top rail 112 is not limited. The top rail 112 is located on the top of the curtain 110 and is used for installing the driving shaft 118 and the control module 124 . The bottom 116 is disposed on the bottom of the curtain 110, wherein the bottom 116 is formed, for example, with a bottom track. However, the type of the bottom 116 is not limited, it can be any weighting element, and can also be composed of the lowermost curtain.

The driving shaft 118 defines the driving axis, and is assembled with the rope winding unit 128 and the control module 124 respectively. The operation of the driving shaft 118 is linked with the movement of the bottom 116 , that is, the rotation of the driving shaft 118 is linked with the vertical displacement of the bottom 116 . According to an embodiment, the reel in the rope winding unit 128 can be fastened to the driving shaft 118 , so that the driving shaft 118 and the rope winding unit 128 can rotate synchronously, so as to wind up or unfold the suspension rope 126 . It is worth mentioning that any suitable or known structure can be used for the spool. In addition, because the driving shaft 118 is connected to the control module 124 , the driving shaft 118 can also be driven to rotate according to the operation of the operating rope 120 , so as to raise the curtain 114 .

According to the design of the curtain 110 , the user can lift the curtain 114 by pulling the operating cord 120 . According to an embodiment of the present invention, the operating rope 120 has a shorter length relative to the total stroke of the bottom 116 , and the user can lift the curtain 114 through repeated actions of pulling and releasing the operating rope 120 . The length of the operating rope 120 may be shorter than half of the height of the whole group of curtains 114, for example. When the length of the operating rope 120 is one-third of the height of the entire group of curtains 114, the curtains 114 can be fully raised as long as the operating rope 120 is pulled about three times. This operation method is similar to a ratchet technique. The user can lift the curtain 114 by pulling the operation rope 120, and then release the operation rope 120 to let the operation rope 120 retract, and then pull the operation rope 120 again to continue to rise. The curtain sheet 114 is lifted. The above steps can be repeated until the curtain 114 rises to the desired height.

In addition, the user can turn the control module 124 from the locked state to the unlocked state by rotating the control member 122 , so as to allow the driving shaft 118 to rotate, so that the bottom 116 descends through its own gravity. After the control member 122 is released, the control module 124 can be changed from the unlocked state to the locked state, so as to prevent the driving shaft 118 from rotating.

In order to realize the above-mentioned operation mode, FIG. 2 and FIG. 3 are respectively an exploded view and a cross-sectional view of the control module 124 designed according to an embodiment of the present invention. The control module 124 includes a braking member 132 , a release assembly 134 , a rope drum 136 , and a clutch 138 . The control module 124 also includes a spring 140 for driving the rope drum 136 to rotate toward the retracting direction of the operation rope 120 . The spring 140 can be located inside (as shown) or outside of the control module 124 .

In addition, the control module 124 also includes a casing 142 and a cover 144 . The combination of the casing 142 and the cover 144 can form a casing to cover some parts of the control module 124 . A guide wheel 145 can also be provided on the inner side of the cover body 144 to facilitate the sliding movement of the operating rope 120 .

A clutch 138 may couple or uncouple the motion of the drum 136 from the drive shaft 118 . When the clutch 138 is in an uncoupled state, the drive shaft 118 and the rope drum 136 can rotate relatively. For example, the drum 136 remains static while the weight of the base 116 and the shade 114 rotates the drive shaft 118 relative to the drum 136 to lower the shade 114 and base 116 . Alternatively, the drive shaft 118 remains static while the rope drum 136 rotates to wind up the operating rope 120 . When the operating rope 120 is pulled, the clutch 138 can be turned into a coupled state, so that the rope drum 136 and the drive shaft 118 can rotate synchronously through the transmission of the clutch 138, so as to lift the curtain 114 and the bottom 116.

According to an embodiment, the clutch 138 can be disposed between the braking member 132 and the rope drum 136 , and the clutch 138 is mounted on a fixed shaft 146 . According to this embodiment, the clutch 138 may include a first coupling element 150 , a second coupling element 152 , a spring 154 , a connecting element 156 , and a rolling element 160 . The rolling element 160 is, for example, a ball. In some embodiments, the clutch 138 may further include a sleeve 161 .

Referring to FIG. 3 to FIG. 5 , the connecting member 156 is fixedly connected to the fixed shaft 146 . The fixed shaft 146 is installed separately from the driving shaft 118 , and the fixed shaft 146 is formed by extending the cover 144 along the same axis of the driving shaft 118 . The first coupling part 150 is pivotally connected to part of the fixed shaft 146, and the second coupling part 152 is pivotally connected to the connecting part 156, so that the first coupling part 150 and the second coupling part 152 can rotate around the drive shaft 118 and the fixed shaft 146. The axis rotates relative to the fixed shaft 146, thereby switching the clutch 138 into a coupled or uncoupled state.

Referring to FIG. 4 , the first coupling part 150 has a cylindrical shape and can match with the second coupling part 152 . More specifically, the first coupling member 150 includes a cylindrical outer surface 162 between two ends thereof. The outer surface 162 includes a concave area, the concave area extends around the first coupling member 150 and at least partially defines a part of the guide track 164 of the clutch 138 and a notch 165 communicating with the guide track 164 . In one embodiment of the present invention, for example, two notches 165 are provided, which are respectively located at radially opposite positions. The first coupling member 150 includes two radial flanges 150A opposite to each other near the first end of the rope drum 136, and the rope drum 136 can interfere with the radial flanges 150A so that the rope drum 136 rotates The first coupling member 150 can be driven to rotate synchronously. The second end portion of the first coupling member 150 close to the second coupling member 152 includes at least one radially abutting flange 168 , and the position of the radially abutting flange 168 is close to the notch 165 . According to an embodiment of the present invention, two radially abutting flanges 168 can be provided at opposite positions on the outer surface of the first coupling member 150 , which are respectively close to the corresponding notches 165 . The first coupling member 150 further includes at least one slot 169 , and the slot 169 and the radially abutting flange 168 are spaced apart from each other. According to an embodiment of the present invention, two slots 169 can be formed at radially opposite positions of the first coupling member 150 , which are respectively close to corresponding radially abutting flanges 168 .

Referring to FIG. 5 , the second coupling part 152 has a cylindrical shape and matches with the first coupling part 150 . The second coupling member 152 is provided with two radially opposite radial ribs 172, and each radial rib 172 has an outer surface 174 and an extension portion 176, and the extension portion 176 is radially from the radial rib 172 toward the first The centers of the two coupling elements 152 extend.

As shown in FIG. 14, after the first coupling part 150 and the second coupling part 152 are combined, a closed circuit can be formed between the outer surface 162 of the first coupling part 150 and the outer surface 174 of the second coupling part 152. The guiding track 164 , wherein the guiding track 164 extends around the first coupling part 150 and the second coupling part 152 . Each radial rib 172 is movably disposed in the corresponding notch 165 of the first coupling member 150, and the extension portion 176 is detachably inserted into the corresponding slot 169, thereby guiding the first coupling member 150 and the second coupling member 150. Relative movement of the coupling 152. Thereby, the radial rib 172 can slide in the notch 165 to form or remove one or several blocking areas 177 in the path of the guide rail 164 (as shown in FIGS. 18 and 19 ).

In conjunction with FIG. 2 and FIG. 3 , FIG. 6 and FIG. 7 are schematic diagrams illustrating the sleeve 161 . The sleeve 161 is substantially cylindrical and fixed on the driving shaft 118 so that the sleeve 161 and the driving shaft 118 rotate synchronously. The sleeve 161 includes a central hole 178 and a radial slot 179 . The radial slot 179 is disposed on the inner sidewall of the central hole 178 and extends linearly parallel to the axis of the driving shaft 118 . When the clutch 138 is assembled, the first coupling piece 150 and the second coupling piece 152 are passed through the central hole 178 of the sleeve 161, so that the length of the guide rail 164 and the radial groove 179 of the sleeve 76 are partially overlapped, The rolling element 160 is movably disposed in the guide track 164 and the radial slot 179 .

When the clutch 138 is in an uncoupled state, due to the relative positional relationship between the first coupling member 150 and the second coupling member 152, the rolling member 160 can move along the radial groove 179 and the second coupling member 160 with the rotation of the drive shaft 118 and the sleeve 161 The guide rails 164 formed around the first coupling part 150 and the second coupling part 152 are relatively displaced, wherein the driving shaft 118 and the sleeve 161 rotate independently of the rope drum 136 .

When the clutch 138 is in the coupled state, the second coupling member 152 can be displaced to a second position relative to the first coupling member 150 in the rotational direction, so as to form a recessed blocking area 177 in the guide track 164, wherein the blocking area 177 That is, a recess is formed at the corresponding notch 165 by the sidewall of the guide track 164 (see FIG. 18 ). Therefore, the rolling member 160 displaced along the guide rail 164 and the radial engagement groove 179 will enter and be prevented by the blocking area 177, so that the rotation of the rope drum 136 can pass through the first coupling member 150 and the second coupling member 152, and through Roller 160 communicates to sleeve and drive shaft 118 . In another embodiment of the present invention, the clutch 138 can also directly transmit the rotational motion from the rope drum 136 to the drive shaft 118 .

In conjunction with FIG. 2 , FIG. 8 and FIG. 9 are schematic diagrams showing part of the control module 124 (including the rope drum 136 and the sleeve 161 ) assembled. The rope drum 136 is substantially cylindrical. The rope drum 136 can be pivotally connected to the fixed shaft 146 and is located adjacent to the first coupling part 150 on its side opposite to the second coupling part 152 . The rope drum 136 is connected with the operation rope 120, so that the rope drum 136 can retract the operation rope 120 when rotating. The rope drum 136 is provided with at least one radial flange 136A near one end of the first coupling member 150, and the radial flange 136A of the rope drum 136 can be in contact with the flange 150A of the first coupling member 150 to drive the clutch 138 swivel action.

Referring to FIG. 2 and FIG. 3 , the rope drum 136 is coupled to the spring 140 . The spring 140 can drive the rope drum 136 to rotate, so that the rope drum 136 retracts the operation rope 120 . The spring 140 can be a torsion spring, which is installed in the inner cavity of the rope drum 136. The torsion spring has a first end and a second end, the first end is fixedly connected to the fixed shaft 146 , and the second end is fixedly connected to the rope drum 136 . Through the elastic force of the torsion spring, the rope drum 136 can be urged to rotate relative to the fixed shaft 146 toward the direction of retracting the operation rope 120 . According to other embodiments, the spring 140 can also be disposed outside the control module 124 and used to drive the rope drum 136 to reverse. In the foregoing embodiments, the spring 140 is spaced apart from the control module 124 , but the spring 140 is still connected to the rope drum 136 to drive the rope drum 136 to rotate toward the direction of retracting the operation rope 120 .

In conjunction with FIG. 2 , FIG. 10 and FIG. 11 are schematic diagrams illustrating the assembly of the stopper 132 and the release assembly 134 . The braking member 132 is disposed around the driving shaft 118 and can rotate relative to the pivot axis X of the driving shaft 118 . The braking member 132 has a locked state and an unlocked state. When the brake member 132 is locked, it tightens and locks the sleeve 161 and the drive shaft 118 to prevent the sleeve 161 and the drive shaft 118 from rotating, thereby locking the position of the curtain 114 and the bottom 116 . The brake member 132 is released in the unlocked state to allow the sleeve 161 and the drive shaft 118 to rotate, so that the curtain 114 and the bottom 116 can descend. According to an embodiment, the stopper 132 may include a spring 180 such as a coil spring. The spring 180 is substantially cylindrical and disposed on a peripheral surface of the sleeve 161 . A first protruding end 180A and a second protruding end 180B extend outward from the spring 180 . The first protruding end 180A is fixed to the housing 142 , and the second protruding end 180B is fixed to a ring 182 . When the spring 180 is tightly bound on the sleeve 161, it is in a locked state, and when the spring 180 is loosened, it is in an unlocked state.

The unlocking assembly 134 can be connected with the brake part 132, and drives the brake part 132 to switch from the locked state to the unlocked state. According to an embodiment of the present invention, the unlocking component 134 may include a ring 182 , transmission members 184 , 186 , and the control member 122 . According to an embodiment, the ring 182 has a circular shape, but the present invention is not limited thereto, and the ring 182 can also be realized by other shapes, such as semicircle, arc and so on. The ring 182 can be pivotally connected between the sleeve 161 and the rope drum 136 , especially between the sleeve 161 and the first coupling member 150 . The ring 182 is rotatable about the pivot axis X of the drive shaft 118 . A hole 182A and a protruding tooth portion 182B can be formed on the ring member 182 . The second protruding end 180B of the spring 180 can be fixed to the ring 182 through the hole 182A.

The transmission members 184 and 186 are rotary transmission members disposed between the ring member 182 and the control member 122 , and respectively have different and non-parallel pivot axes. According to one embodiment, the pivot axes of the transmission elements 184 and 186 may be perpendicular and spaced apart from each other, the pivot axis of the transmission element 184 is approximately parallel to the axis of the drive shaft 118 , and the pivot axis of the transmission element 186 is inclined relative to the vertical direction. The first end of the transmission member 184 can be provided with a convex tooth portion 188 , and the convex tooth portion 188 can engage with the convex tooth portion 182B. The second end of the transmission member 184 can mesh with the transmission member 186 through a gear transmission 190 , wherein the gear transmission 190 is, for example, a helical gear, a worm gear and the like.

According to an embodiment, the transmission member 186 is a hollow body, and the operation rope 120 can pass through the transmission member 186 after protruding from the rope drum 136 , and then extend along the inner side of the control member 122 . According to this embodiment, the operation rope 120 can slide relative to the control member 122, for example, the pulled operation rope 120 slides relative to the control member 122 along the inner side of the hollow body.

Referring to FIG. 1 , FIG. 2 , and FIG. 10 , the manipulation member 122 is an elongated body vertically downward from the top rail 112 , and is composed of, for example, a rotating rod. The control member 122 is disposed on one side of the top track 112 and is connected to the braking member 132 through the aforementioned ring member 182 , transmission members 184 , 186 and other components. The operation rope 120 can extend along the inner side of the control member 122 , and a bottom end of the operation rope 120 can be provided with a bolt body 192 . The bolt body 192 can resist against the bottom end of the control member 122 to prevent the operation rope 120 from completely detaching from the control member 122 when moving upward. The top end of the control member 122 can be pivotally connected to the transmission member 186 (it can be implemented as a horizontal pivot), so that the control member 122 can rotate relative to the transmission member 186 so as to adjust the inclination angle of the control member 122 . In addition, the control member 122 can rotate around its long axis Y, and the rotation of the control member 122 can drive the transmission members 184, 186 to rotate. Through the action of the transmission members 184, 186, the brake member 132 can be driven from the locked state to the locked state. unlocked state.

When the user does not operate the operating cord 120, the spring 180 of the braking member 132 tightens the sleeve 161 and prevents the driving shaft 118 from rotating, so that the curtain 114 is locked at a fixed position. It is worth mentioning that the sleeve 161 of the present invention can be any part provided on the drive shaft 118 that can be connected with the clutch and cooperate with it. It can have any shape and is not limited to the components assembled on the drive shaft 118 . According to other embodiments, the sleeve 161 can also be integrally formed with the driving shaft 118 so that the spring 180 can tighten the driving shaft 118 and prevent it from rotating.

11 and 12 are schematic diagrams illustrating the operation of the unlocking component 134 . When the user wants to lower the bottom 116, the user only needs to rotate the control member 122 slightly, and through the transmission action of the transmission members 184, 186, the ring member 182 can be driven to rotate an angle around the pivot axis X of the drive shaft 118, and the spring 180 can be displaced. The second protruding end 180B thereby urges the release of the spring 180 so that the locking member 132 changes from the locked state to the unlocked state.

1 to 12 , FIG. 13 is a schematic diagram illustrating the descending action of the curtain 110 , and FIG. 14 is a schematic diagram illustrating the state of the guide rail 164 in the clutch 138 when the curtain 110 is descending. After the brake part 132 is released, the gravity generated by the bottom 116 and the curtains 114 stacked on the bottom 116 can pull the suspension rope 126, so that the suspension rope 126 is gradually unfolded from the rope winding unit 128 and drives the drive shaft 118 Rotates relative to the rope drum 136 . When the drive shaft 118 and the sleeve 161 rotate to lower the bottom 116, the rope drum 136 does not move, and the rolling member 140 moves along the radial groove 179 and the guide rail 164 of the clutch 138 relative to the first coupling member 150, the second The coupling member 152 and the sleeve 161 are rolled and displaced, as shown by arrows in FIG. 14 . Especially, when the bottom 116 descends, the spring 154 will generate resistance to keep the first coupling member 150 and the second coupling member 152 stationary, so that the clutch 138 maintains an uncoupled state, that is, a state where there is no blocking area 177 in the guide track 164 . In addition, when the clutch 138 is in an uncoupled state, the radial rib 172 of the second coupling member 152 is separated from the radially abutting flange 168 located in the notch 165 of the first coupling member 150 .

After the bottom 116 moves down to a desired height, the user can release the control member 122 . Therefore, the spring 180 will return to its original shape and tighten the sleeve 161 through its own elastic force, so that the brake member 132 returns to the locked state, so as to prevent the driving shaft 118 and the sleeve 161 from rotating and lock the height of the bottom 116 . When the spring 180 returns to the tightened state, it will also drive the ring 182 to rotate in the opposite direction, and through the power transmission of the transmission parts 184 and 186 , it can drive the control part 122 to reverse and reset.

15 to 19 are schematic diagrams illustrating the action of raising the curtain 110 . Referring to FIG. 15 , when the user wants to lift the bottom 116 , the user can pull the operating rope 120 downwards, so that the operating rope 120 extends from the rope barrel 136 and slides through the control member 122 , wherein the control member 122 remains approximately stationary. As shown in FIG. 16 , the rotation of the rope drum 136 along the extension direction of the operation rope 120 will cause the radial flange 136A of the rope drum 136 to push the radial flange 150A of the first coupling member 150, thereby making the first coupling member 150 Rotate relative to the second coupling member 152 until the radial abutting flange 168 of the first coupling member 150 abuts against the radial rib 172 of the second coupling member 152 (as shown in FIG. 17 ), at this time the second The coupling member 152 is in the second position, so that the blocking area 177 is formed in the guiding track 164 (as shown in FIGS. 18 and 19 ).

When the operating rope 120 is continuously pulled downward, the rope drum 136 and the clutch 138 will rotate synchronously until the rolling member 160 reaches the blocking area 177 . It is worth mentioning that in this embodiment, two blocking areas 177 are formed in the guide rail 164 to shorten the travel of the rolling element 160 to the blocking area 177; A single barrier region 177 is formed in the middle.

When the rolling element 160 reaches the blocking area 177, the clutch 138 can be turned into a coupled state. Since the rolling element 160 abuts against the blocking area 177 and the slot 179 of the sleeve 161 at the same time, the action of pulling the operation rope 120 downward can make the rope drum 136 rotate, and the two radial flanges 136A, 150A abut against each other. Then, the rotation of the rope drum 136 will be transmitted to the clutch 138, and then through the abutment of the rolling element 160 with the slot 179 of the sleeve 161 and the blocking area 177 of the clutch 138, the rotation action will be transmitted from the clutch 138 to the sleeve. barrel 161 and drive shaft 118 . Because the sleeve 161 is urged to rotate, the first protruding end 180A of the spring 180 will contact the inner surface of the housing 142, so as to force the spring 180 to change from the state of tightening the sleeve 161 to the state of loosening, thereby the braking member 132 turns to unlocking. In this way, by pulling the operating rope 120 downward, the clutch 138 can be turned into a coupled state, and through the transmission of the clutch 138, the rope drum 136, the sleeve 161 and the drive shaft 118 can be driven to rotate synchronously, so as to raise Bottom 116.

During the upward displacement of the bottom 116 , the user can release the operating rope 120 at any time, for example, when the bottom 116 reaches a desired height, or when the operating rope 120 is fully extended from the rope barrel 136 . When the operating cord 120 is released, the spring 180 resumes its state of tightening the sleeve 161 . The tightening effect of the spring 180 can lock and prevent the rotation of the sleeve 161 and the drive shaft 118, thereby locking the curtain 114 at a desired height. At the same time, the spring 140 reverses the driving rope drum 136 to retract the operating rope 120 .

Referring to Fig. 20, with the reverse rotation of the rope drum 136, the radial flange 136A of the rope drum 136 can contact and push the opposite radial flange 150A of the first coupling member 150, thereby synchronously driving the first coupling member 150 relative to the second The coupling 152 rotates.

21 to 23, the rotation of the first coupling member 150 and the rope drum 136 causes the radial abutment flange 168 of the first coupling member 150 to displace along the radial rib 172 away from the second coupling member 152 until the first The coupling member 150 reaches another abutting position and restores the state of the non-blocking area 177 in the guide track 164 (as shown in FIGS. 22 and 23 ). As shown in FIG. 4 , when the extension portion 176 abuts against the side edge 169A of the slot 169, the state of no blocking area 177 in the guide rail 164 can be restored. At this time, the clutch 138 is switched to an uncoupled state, the spring 140 can continue to drive the rope drum 136 to reverse to retract the operation rope 120 , and the first coupling member 150 and the second coupling member 152 rotate synchronously. Since no blocking area 177 is formed in the guide track 164 , the coupled rotation of the first coupling member 150 and the second coupler 152 causes the rolling member 160 to displace along the guide track 164 and the slot 179 of the sleeve 161 . When the first coupling part 150 , the second coupling part 152 and the rope barrel 136 rotate and retract the operation rope 120 , the sleeve 161 and the driving shaft 118 are locked by the spring 180 and remain static. Therefore, when the rope drum 136 is retracting the operation rope 120, the bottom 116 and the curtain 114 can maintain their positions. After the rope drum 136 retracts part or all of the operating rope 120 (when the rope drum 136 completely retracts the operating rope 120, the bolt body 192 is in contact with the bottom end of the control member 122), the user can then pull the operating rope 120 downward. , so that the curtain sheet 114 is raised again. The aforementioned operation steps can be repeated for many times until the curtain 114 rises to the desired height.

Referring again to FIG. 1 and FIG. 2 , the lower end 122A of the control member 122 may have a thicker and wider shape, so as to facilitate the user to hold and operate the control member 122 . In order to avoid damage to the internal parts caused by the wrong operation of the user, a safety device can also be provided at the lower end 122A in one embodiment of the present invention. When the user rotates the control member 122 in the wrong direction through the lower end 122A, the safety device will The rotation of the lower end 122A can be decoupled, so that the operation of the lower end 122A cannot drive the unlocking assembly 134 to release the lock. FIG. 24 is a schematic diagram showing the safety device 200 provided in the lower end portion 122A.

As shown in FIG. 24 , the control member 122 includes, for example, a rod 122B, and the safety device 200 may include an outer cylinder 202 and an inner ring 204 disposed in the outer cylinder 202 . The operating cord 120 passes through the inner side of the outer cylinder 202 and the inner ring 204, respectively. The outer cylinder 202 can be pivotally connected to the rod 122B of the control member 122 so that the outer cylinder 202 can rotate relative to the rod 122A. The inner ring 204 is slidingly assembled with the bar 122B, so that the inner ring 204 can move longitudinally relative to the bar 122B along the pivot axis Y of the control member 122, but the inner ring 204 and the bar 122B of the control member 122 rotate synchronously. .

The outer cylinder 202 and the inner ring 204 have contact surfaces 202A and 204A respectively. The contact surfaces 202A, 204A are approximately perpendicular to the pivot axis Y of the manipulation member 122, and the contact surfaces 202A, 204A respectively have unidirectional saw-off surfaces.

When the outer cylinder 202 rotates toward the direction A1, the engagement of the contact surfaces 202A and 204A can drive the inner cylinder 204 and the control member 122 to rotate synchronously, which is the correct rotation direction corresponding to the release curtain.

If the user rotates the outer cylinder 202 in the opposite direction A2, the contact surfaces 202A and 204A push each other and cannot be connected, causing the inner ring 204 to move upwards, causing the outer cylinder 202 to rotate idly, which is the wrong direction of rotation for the corresponding release curtain. . Thereby, the control member 122 can be prevented from rotating in a wrong direction, and the problem of damage to the release assembly 134 due to wrong operation can be avoided.

Figure 25 shows a schematic diagram of a curtain 110' provided by another embodiment, Figure 26 shows an exploded view of a control module 124' in a curtain 110', Figure 27 shows a schematic diagram of a curtain 110' being put down, and Figure 28 A schematic diagram of the raising operation of the curtain 110' is then shown. As shown in Fig. 25 to Fig. 28, compared with the aforementioned curtain 110, the main difference of the curtain 110' lies in the connection method between the operation rope 120 and the control member 122 in the control module 124'. According to this embodiment, the transmission member 186 is also a hollow body, and the operation rope 120 is fixed to the control member 122 after passing through the transmission member 186 , so that the operation rope 120 can be pulled synchronously when the control member 122 is displaced downward.

In addition, a plug body 194 is disposed on the top of the control member 122 . According to one embodiment, the bolt body 194 can be pivotally connected to the top end of the bar 122B of the control member 122 , and the bolt body 194 can have a protruding tooth end 194A.

One end of the transmission member 186 is provided with a groove 196 (see FIG. 28 ), and the protruding tooth end 194A of the plug body 194 engages with the groove 196 of the transmission member 186 in a detachable manner. The other end of the transmission member 184 can be connected with the transmission member 186 through a gear transmission 190 as in the previous embodiment, wherein the gear transmission 190 is, for example, a worm gear transmission, a helical gear, and the like. Therefore, when the control member 122 engages with the transmission member 186 through the plug body 194 , the control member 122 can drive the transmission member 186 to rotate through the convex tooth end 194A. When the control member 122 is displaced downward, the bolt body 194 (especially the protruding tooth end 194A) will disengage from the transmission member 186 .

As for other parts of the control module 124' and the curtain 110', they can be the same as those of the foregoing embodiments.

When the user does not operate the control member 122 , the spring 180 of the brake member 132 tightens the sleeve 161 and prevents the driving shaft 118 from rotating, so that the curtain 114 is locked at a fixed position. Moreover, due to the effect of the spring 140 , the rope drum 136 will generate a pulling force on the operation rope 120 , so that the bolt body 194 is inserted into and engaged with the transmission member 186 .

In conjunction with Fig. 25 and Fig. 26, Fig. 27 shows a schematic diagram of the lowering operation of the curtain 110'. As shown in Figure 27, if the user wants to lower the bottom 116, the user only needs to slightly rotate the control member 122, and through the protruding tooth end 194A of the plug body 194, the power transmission of the transmission members 184, 186, etc., the ring member 182 can be driven to rotate for one degree. Angling and displacing the second protruding end 180B of the spring 180 thereby urges the spring 180 of the detent 132 to release, turning the detent 132 into an unlocked state. Then, the bottom 116 can be lowered in the same manner as above until reaching the desired height. When the bottom 116 reaches the desired height, the user can release the control member 122 , and the spring 180 can return to the tight state, so as to lock the position of the bottom 116 .

As shown in FIG. 28 , when the user intends to lift the bottom 116 , the user can pull the control member 122 downward, so that the bolt body 194 disengages from the groove 196 of the transmission member 186 and the operation rope 120 extends from the rope drum 136 . As mentioned above, the rope drum 136 rotates along the extension direction of the operation rope 120 , and transmits the rotation motion to the sleeve 161 and the drive shaft 118 through the clutch 138 . Because the sleeve 161 is urged to rotate, the first protruding end 180A of the spring 180 will contact the inner surface of the housing 142, so as to force the spring 180 to change from the state of tightening the sleeve 161 to the state of loosening, thereby the braking member 132 turns to unlocking. In this way, by pulling down the control member 122 , the rope drum 136 and the driving shaft 118 can be rotated synchronously, thereby raising the bottom 116 .

During the upward displacement of the base 116 , the user can release the manipulation member 122 at any time. When the operating member 122 is released, the spring 180 resumes its state of tightening the sleeve 161 . The tightening effect of the spring 180 can lock and prevent the sleeve 161 and the drive shaft 118 from rotating, thereby locking the curtain 114 at a desired height. At the same time, the spring 140 reverses the driving rope drum 136 to retract the operating rope 120 . As the rope drum 136 retracts the operating rope 120 , the operating member 122 will move upward synchronously until the bolt body 194 is inserted into the groove 196 and engages with the transmission member 186 .

29 to 33 illustrate the control module 324 provided by another embodiment of the present invention. As shown in FIG. 29 , compared with the above-mentioned embodiments, the main difference of the control module 324 lies in the structure of the clutch 338 . According to this embodiment, clutch 338 utilizes a movable coupling 350 . The coupling member 350 is installed on the fixed shaft 146 so that the coupling member 350 can rotate relative to the fixed shaft 146 and longitudinally displace along the axial direction of the fixed shaft 146 .

FIG. 30 is a schematic plan view showing part of the coupling element 350 . As shown in FIG. 30 , one or more guide rails 364 are formed on the peripheral surface of the coupling member 350 ( FIG. 30 shows three guide rails 364 for example), and the coupling member 350 faces the sleeve 361 on its side. A convex tooth surface 355 is formed.

Referring to Fig. 29 and Fig. 30, the rope barrel 336 connected to the operating rope 120 may have a circular inner cavity 337, and the inner side wall of the inner cavity 337 may be formed with a protrusion 339. The coupling member 350 can be installed in the inner cavity 337 , and the protrusions 339 are respectively slidably passed through the guide rails 364 . Through the mutual cooperation between the protrusion 339 and the guide track 364, the rotation of the rope drum 336 can be converted into a synchronous rotation of the coupling part 350 and a longitudinal movement relative to the rope drum 336, thereby driving the coupling part 350 toward or away from the sleeve 361 direction displacement. In addition, the sleeve 361 fixed on the driving shaft 118 can have a convex tooth surface 362 on the side facing the coupling member 350 , wherein the convex tooth surface 362 can mesh with the convex tooth surface 355 of the coupling member 350 .

As for the mechanisms such as the brake component and the lock release assembly of the control module 324, the above-mentioned embodiments can be used.

31 and 32 are schematic diagrams illustrating the control module 324 raising the curtain. When the operating rope 120 is pulled down, the rope drum 336 will rotate, and through the guiding effect of the protrusion 339 and the guide rail 364, the coupling part 350 will be driven to rotate and at the same time be displaced toward the direction of the sleeve 361 until the convex tooth surface 362 , 355 gears. After the coupling member 350 engages with the sleeve 361, the continuous rotation of the rope drum 336 can drive the sleeve 361 and the drive shaft 118 to rotate, so as to lift the bottom 116 (see FIG. 1 ).

33 and 34 are schematic diagrams illustrating the control module 324 performing the retraction operation rope 120 . When the spring 140 drives the rope drum 336 to reverse for retracting the operating rope 120, through the guiding effect of the protrusion 339 and the guide rail 364, it can drive the coupling member 350 to move away from the sleeve 361, so that the sleeve 361 The convex tooth surface 362 of the coupling member 350 disengages from the convex tooth surface 355 . In this way, the rotation of the rope drum 336 can be decoupled, and the sleeve 361 and the driving shaft 118 can be locked by the spring 180 of the brake during the process of winding the operation rope 120 by the rope drum 336 .

It is worth mentioning that the safety device 200 described above with reference to FIG. 24 can be used with any control module. Therefore, in the embodiments shown in FIGS. 25 to 33 , the same safety device can also be provided on the lower end portion 122A of the operating member 122 to prevent the operating member 122 from driving the release assembly in a wrong rotation direction.

The structure and operation method provided by the present invention can turn the brake part of the control module from the locked state to the unlocked state by rotating a control part, so that the curtain can drop through its own gravity, and the operation is very convenient .

The above description is based on multiple different embodiments of the present invention, wherein each feature can be implemented singly or in different combinations. Therefore, the disclosure of the embodiments of the present invention is a specific example to illustrate the principles of the present invention, and the present invention should not be limited to the disclosed embodiments. Furthermore, the foregoing description and accompanying drawings are only for the purpose of illustrating the present invention, and are not intended to limit it. Changes or combinations of other elements are possible without departing from the spirit and scope of the present invention.

[Description of main component symbols]

Curtains 110

Top Track 112 Curtain 114

bottom 116 drive shaft 118

Operating rope 120 Control piece 122

Stick 122B Control Module 124

brake 132 release assembly 134

Drum 136 Radial flange 136A, 150A

Clutch 138 Spring 140, 154, 180

Housing 142 Cover 144

First coupling 150 Second coupling 152

Guide wheel 145 Fixed shaft 146

Connecting piece 156 Rolling piece 160

Sleeve 161 Guide rail 164

Notch 165 radially abuts flange 168

slot 169 radial rib 172

extension 176 barrier 177

Central hole 178 Radial slot 179

First protruding end 180A Second protruding end 180B

Ring 182 Hole 182A

Convex gear 182B Transmission parts 184, 186

Plug 192

safety device 200 outer cylinder 202

Inner ring 204 contact surfaces 202A, 204A

Curtain 110'

Control Module 124’ Hitch 194

Cam 194A Groove 196

Control Module 324

Clutch 338. Coupling 350

Guide rail 364 Convex flank 355

Rope Drum 336 Inner Cavity 337

Protrusion 339 Sleeve 361

Convex tooth surface 355, 362

Claims (21)

1. A control module for curtains, comprising: a drive shaft; a sleeve fixed to the drive shaft; A brake piece, which is arranged on the sleeve, wherein the brake piece prevents the rotation of the sleeve and the drive shaft in the locked state, so as to lock the curtain of the curtain at the position, and the brake piece is in the When the lock is released, the sleeve and the drive shaft are allowed to rotate, so that the curtains of the curtain can be adjusted vertically; A release assembly, which includes a control member, the control member is connected to the braking member, and the control member includes a rod vertically downward along the long axis; a rope drum and an operating rope, the rope drum being connected to the operating rope; and a clutch connected to the rope drum, the clutch can couple and decouple the motion of the rope drum and the drive shaft; Wherein, when the operation rope is pulled, it can drive the rope drum to rotate and turn the clutch into a coupled state, so that the rotation of the rope drum can drive the sleeve and the drive shaft to rotate through the clutch to raise the curtain. When the bar is rotated around its long axis, the brake is switched from a locked state to an unlocked state, so that the curtain of the curtain will descend through its own gravity. 2. The control module as claimed in claim 1, wherein the braking member comprises a spring, the spring is arranged around the sleeve, the spring is locked when the sleeve is tightened, and the spring is released when the spring is loosened. In the unlocked state. 3. The control module as claimed in claim 2, wherein the release assembly further comprises: a ring rotatable about the pivot axis of the drive shaft and connected to the spring; and A plurality of transmission parts are arranged between the ring part and the control part, wherein when the bar rotates around its long axis, the ring part can be driven to rotate around the pivot axis of the drive shaft through the action of the plurality of transmission parts Rotate an angle, so that the spring is released. 4. The control module as claimed in claim 3, wherein the spring has a first protruding end and a second protruding end, the first protruding end is connected with a housing of the control module, and the second protruding end The end is connected to the ring. 5. The control module as claimed in claim 3, wherein the plurality of transmission elements include a first transmission element and a second transmission element, the ring has a convex tooth portion, and the convex tooth portion is connected to the first transmission element and the second transmission member can be connected with the control member and meshed with the first transmission member through gear transmission, wherein the gear transmission can be helical gear or worm gear transmission. 6. The control module as claimed in claim 5, wherein the second transmission member is a hollow body, and the operating rope passes through the second transmission member. 7. The control module as claimed in claim 1, wherein when the operation rope is pulled, the brake can be switched to the unlocked state and the curtain of the curtain can be raised; and the rope drum rotates to retract the operation When the rope is connected, the brake is in the locked state and the clutch is in the uncoupled state. 8. The control module as claimed in claim 1, wherein the operation rope extends through the inner side of the rod, and the operation rope slides relative to the rod when pulled. 9. The control module as claimed in claim 5, wherein the operating rope is fixed to the bar so that the operating rope can be pulled synchronously when the bar moves downward. 10. The control module as claimed in claim 9, wherein the control member further comprises a bolt, the bolt is connected to the top end of the rod, and the bolt is removably engaged with the second transmission member . 11. The control module as claimed in claim 10, wherein the bolt body can be provided with a convex tooth end, when the bolt body is engaged with the second transmission member, the bar can drive the tooth end through the convex tooth end The second transmission member rotates, and when the bar is displaced downward, the protruding tooth end will disengage from the second transmission member. 12. The control module as claimed in claim 1, further being provided with a safety device, wherein the safety device comprises: an inner ring slidably engaged with the bar such that the inner ring is displaceable relative to the bar along the bar's pivot axis but rotates synchronously with the bar; and an outer cylinder, which is pivotally connected to the rod so that the outer cylinder can rotate relative to the rod; Wherein, the outer cylinder and the inner ring respectively have a plurality of contact surfaces in contact with each other, the plurality of contact surfaces are approximately perpendicular to the pivot axis of the rod, and the plurality of contact surfaces respectively have unidirectional saw-off surfaces. 13. The control module as claimed in claim 12, wherein when the outer cylinder rotates in one direction, the inner ring and the control member can be driven to rotate synchronously through the engagement of the plurality of contact surfaces, and when the outer cylinder When the cylinder rotates in the opposite direction, the plurality of contact surfaces push each other and cannot be connected, so that the inner ring moves upwards, while the outer cylinder rotates idly. 14. A curtain comprising: a top track; a set of curtains; a bottom, which is located at the bottom of the screen; a plurality of suspension ropes respectively connected between the top rail and the bottom; a plurality of reel units arranged on the top track and connected to the suspension rope; and A control module, which is arranged on the top track, wherein the control module includes: a drive shaft, which is combined with the plurality of rope winding units; a sleeve fixed to the drive shaft; A brake, which is arranged on the sleeve, wherein the brake prevents the rotation of the sleeve and the drive shaft in the locked state, so as to lock the bottom at the position, and the brake is released When in the state, the sleeve and the drive shaft are allowed to rotate so that the bottom can be adjusted vertically; A release assembly, which includes a control member, the control member is connected to the braking member, and the control member includes a rod vertically downward along the long axis; a rope drum and an operating rope, the rope drum being connected to the operating rope; and a clutch connected to the rope drum, the clutch can couple and decouple the motion of the rope drum and the drive shaft; Wherein, when the operation rope is pulled, it can drive the rope drum to rotate and turn the clutch into a coupled state, so that the rotation of the rope drum drives the sleeve and the drive shaft to rotate through the clutch to raise the bottom; When the bar rotates around its long axis, the brake part is switched from a locked state to an unlocked state, so that the bottom will descend through its own gravity. 15. The curtain as claimed in claim 14, wherein the stopper comprises a spring, the spring is arranged around the sleeve, the spring is locked when the sleeve is tightened, and released when the spring is loosened. lock state. 16. The window covering of claim 15, wherein the release assembly further comprises: a ring rotatable about the pivot axis of the drive shaft and connected to the spring; and A plurality of transmission parts are arranged between the ring part and the control part, wherein when the bar rotates around its long axis, the ring part can be driven to rotate around the pivot axis of the drive shaft by the action of the plurality of transmission parts. angle so that the spring unwinds. 17. The curtain as claimed in claim 16, wherein the spring has a first protruding end and a second protruding end, the first protruding end is connected with a housing of the control module, and the second protruding end is Connect to this ring. 18. The window shade as claimed in claim 16, wherein the plurality of transmission members includes a first transmission member and a second transmission member, the ring has a convex tooth portion, and the convex tooth portion is toothed with the first transmission member and the second transmission member can be connected with the control member and meshed with the first transmission member through gear transmission, wherein the gear transmission can be helical gear or worm gear transmission. 19. The curtain as claimed in claim 18, wherein the operating cord is fixed to the rod so that the operating cord can be pulled synchronously when the rod is displaced downward, and the control member also includes a bolt body, the bolt The body is connected with the top end of the rod, and the bolt body can move synchronously with the rod so that the bolt body engages or disengages from the second transmission member. 20. The curtain as claimed in claim 19, wherein when the bolt body is engaged with the second transmission member, the rod can drive the second transmission member to rotate, and when the rod moves downward, the bolt is driven The body disengages from the second transmission member. 21. The curtain as claimed in any one of claims 14 to 20, wherein when the operating cord is pulled, the brake can be switched to the unlocked state and the curtain can be raised; and the rope drum rotates to roll When the operating rope is retracted, the braking member is in a locked state and the clutch is in an uncoupled state.