Roller shutter curtain

Abstract

The utility model discloses a rolling curtain which comprises a rolling pipe, a curtain body, a first power assembly and a second power assembly. The reel pipe is provided with a first end part and a second end part which are opposite; the curtain body is wound on the reel pipe; the first power assembly is arranged at the first end of the reel pipe, the first power assembly is provided with a motor, a transmission part and a clutch, the transmission part is connected with the reel pipe and can coaxially rotate along with the reel pipe, and the clutch is connected with the motor and the transmission part and is suitable for switching linkage and non-linkage of the motor and the transmission part; the second power assembly is provided with a support and a plurality of clockwork springs, the support is arranged at the second end of the reel pipe, and the clockwork springs are arranged on the support at intervals so that when the curtain body is pulled to be at different heights, the clockwork springs can generate different pulling forces to enable the curtain body to stay at any height. Therefore, the service life of the motor can be prolonged, the energy consumption is reduced, the cost of the curtain motor is reduced, electric and manual switching of the curtain can be realized, and the failure rate is low.

Description

Technical Field

[0001] The utility model relates to the technical field of curtains, in particular to a rolling curtain. Background Art

[0002] Roller curtains, also known as roll-up curtains, use a roller tube to drive the entire curtain to roll up and down. According to different operating methods, they can be divided into bead-type roller curtains, spring-type roller curtains, and electric roller curtains.

[0003] The power device of the rolling curtain in the related art is relatively simple. For example, the electric rolling curtain only retracts and extends the entire curtain by driving the rotation of the roller tube through the cooperation of the motor and the reducer, which limits the service life of the motor and increases the cost of the rolling curtain. Alternatively, the curtain can be adjusted both manually and electrically, but the structure of its clutch mechanism is complex and the failure rate is high. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the purpose of the utility model is to provide a rolling curtain, which can extend the service life of the motor, reduce energy consumption, reduce the cost of the curtain motor, realize the switching of the curtain between electric and manual operation, and has a low failure rate.

[0005] To achieve the above-mentioned purpose, the embodiment of the utility model provides a rolling curtain, which includes: a rolling tube, a curtain body, a first power assembly and a second power assembly;

[0006] The coiled tube has a first end and a second end that are opposite;

[0007] The curtain body is wound around the roller tube;

[0008] The first power assembly is arranged at the first end of the winding tube, and the first power assembly comprises a motor, a transmission member and a clutch, wherein the transmission member is connected to the winding tube and can rotate coaxially with the winding tube, and the clutch connects the motor and the transmission member and is suitable for switching between linkage and non-linkage between the two;

[0009] The second power assembly comprises a bracket and a plurality of springs, wherein the bracket is arranged at the second end of the roller tube, and the springs are arranged on the bracket at intervals so that when the curtain body is pulled to different heights, the springs generate different pulling forces to make the curtain body stay at any height.

[0010] According to a rolling curtain proposed by the utility model, a first power component and a second power component are used to cooperate to realize the retraction and extension of the curtain body, wherein the first power component utilizes a motor to drive the rotation of a roller tube to retract and extend the curtain body, and the second power component utilizes the tension generated by the spring on the bracket due to pulling the curtain body and the balance bar at the bottom of the curtain body to form a torque balance so that the curtain body can stay at any height. Therefore, the second power component is used to provide part of the power, which can extend the service life of the motor, reduce energy consumption, and reduce the cost of the curtain motor; for the first power component, it utilizes a clutch to switch the motor and the transmission member in linkage and non-linkage, so that by controlling the motor to run or stop, the curtain can be switched between electric and manual, with a simple structure and a low failure rate.

[0011] In addition, the roller blind curtain proposed in the utility model may also have the following additional technical features:

[0012] Optionally, the clutch comprises a clutch pin, a clutch sleeve, a first magnetic member, a second magnetic member and a mounting seat, the clutch pin is rotatably inserted on the mounting seat and has a first extension portion and a second extension portion extending from the mounting seat, the first extension portion is connected to the motor, the second extension portion is rotatably inserted into the clutch sleeve, one end of the clutch sleeve is connected to the transmission member, and the other end and the mounting seat jointly define an accommodating cavity, the clutch pin located in the accommodating cavity is provided with a paddle, the clutch sleeve located in the accommodating cavity is provided with a card slot, the first magnetic member is placed in the accommodating cavity, and the second magnetic member is arranged in the mounting seat;

[0013] When the motor is running, the paddle moves the first magnetic member into the slot, and the first magnetic member limits the paddle so that the clutch pin drives the clutch sleeve and the transmission member to rotate, thereby linking the motor with the transmission member; when the motor is stationary, the second magnetic member absorbs the first magnetic member out of the slot, and the motor and the transmission member are not linked.

[0014] Furthermore, a cone is radially extended from the outer periphery of the clutch pin to construct the paddle.

[0015] Furthermore, the second magnetic attraction member surrounds the outer circumference of the clutch pin.

[0016] Furthermore, the first magnetic attraction member is a magnet member, and the second magnetic attraction member is an iron member.

[0017] Furthermore, the first power assembly also includes a support tube, a grating detector and an end cover, one end of the support tube is connected to the mounting seat, and the other end is connected to the grating detector, and the grating detector is arranged on the end cover.

[0018] Furthermore, the grating detector includes a grating PCBA, a grating and a PCB box, the grating PCBA is arranged at an extension portion of the support tube, the grating is arranged on the PCB box and connected to the PCB board in the PCB box, and when the support tube rotates, the grating PCBA cooperates with the grating to detect the number of forward and reverse rotations.

[0019] Optionally, the second power assembly further comprises a mounting rod, a plurality of slots are defined on the bracket, each of the slots is suitable for accommodating a clockwork spring, and the mounting rod is inserted into the clockwork spring on the bracket to position the clockwork spring.

[0020] Furthermore, a plurality of the card slots are arranged at intervals along the length direction of the bracket.

[0021] Furthermore, the inner end of the clockwork spring is connected to the mounting rod, and the outer end of the clockwork spring is connected to the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a rolling curtain according to an embodiment of the utility model;

[0023] Figure 2 It is an exploded schematic diagram of a rolling curtain according to an embodiment of the utility model;

[0024] Figure 3 for Figure 2 A partial enlarged view of

[0025] Figure 4 It is a structural schematic diagram of a first power assembly according to an embodiment of the utility model;

[0026] Figure 5 is an exploded schematic diagram of a first power assembly according to an embodiment of the utility model;

[0027] Figure 6 for Figure 5 An enlarged view of a local component;

[0028] Figure 7 is a cross-sectional view of a first power assembly according to an embodiment of the utility model;

[0029] Figure 8 for Figure 7 An enlarged view of a local component;

[0030] Fig. 9 It is a structural schematic diagram of a clutch sleeve according to an embodiment of the utility model;

[0031] Fig.10 is a structural schematic diagram of a second power assembly according to an embodiment of the utility model;

[0032] Fig.11 is an exploded schematic diagram of a second power assembly according to an embodiment of the utility model;

[0033] Description of reference numerals:

[0034] Coil 1;

[0035] Curtain body 2;

[0036] First power assembly 3, motor 31, transmission member 32, card seat 321, outer sleeve 322, clutch 33, clutch pin 331, paddle 3311, clutch sleeve 332, first card slot 3321, first magnetic member 333, second magnetic member 334, mounting seat 335, fixing seat 3351, inner sleeve 3352, accommodating chamber 34, battery pack 35, support tube 36, grating detector 37, grating PCBA 371, grating 372, PCB box 373, end cover 38;

[0037] The second power assembly 4 , the bracket 41 , the second slot 411 , the spring 42 , and the mounting rod 43 . DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0039] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0040] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] Reference below Figure 1-Figure 11 , describing a rolling curtain proposed according to an embodiment of the utility model, wherein the rolling curtain can electrically retract and extend the curtain body, and can also manually pull the curtain body so that the curtain body stays at a desired height.

[0042] The rolling curtain according to the embodiment of the utility model comprises a roller tube 1 , a curtain body 2 , a first power assembly 3 and a second power assembly 4 .

[0043] Specifically, the roller tube 1 has a first end and a second end relative to each other; the curtain body 2 is wound around the roller tube 1; the first power component 3 is arranged at the first end of the roller tube 1, and the first power component 3 has a motor 31, a transmission member 32 and a clutch 33, the transmission member 32 is connected to the roller tube 1 and can rotate coaxially with the roller tube 1, the clutch 33 connects the motor 31 and the transmission member 32 and is suitable for switching the linkage and non-linkage between the two; the second power component 4 has a bracket 41 and a plurality of spring springs 42, the bracket 41 is arranged at the second end of the roller tube 1, and the plurality of spring springs 42 are arranged at intervals on the bracket 41 so that when the curtain body 2 is pulled to different heights, the spring springs 42 generate different pulling forces to make the curtain body 2 stay at any height.

[0044] That is to say, for the first power assembly 3, the rotation of the motor 31 drives the roller tube 1 to rotate, so that the curtain body 2 is electrically retracted and released on the roller tube 1; for the second power assembly 4, when the curtain body 2 is manually pulled, the roller tube 1 rotates, so that the spring spring 42 generates a pulling force, and the pulling force forms a torque balance with the curtain body 2 and the balance bar at the bottom of the curtain body 2, so that the curtain body 2 can stay at a desired height. In addition, by setting the clutch 33 in the first power assembly 3, the electric and manual operation of the roller tube 1 can be switched when the motor 31 is started or stopped.

[0045] Therefore, according to a rolling curtain proposed by the utility model, a first power component 3 and a second power component 4 are used to cooperate to realize the retraction and extension of the curtain body 2, wherein the first power component 3 utilizes the motor 31 to drive the rotation of the roller tube 1 to retract and extend the curtain body 2, and the second power component 4 utilizes the tension generated by the spring spring 42 on the bracket 41 due to pulling the curtain body 2 and the curtain body 2 and the balance bar at the bottom of the curtain body 2 to form a torque balance so that the curtain body 2 can stay at any height. Therefore, by using the second power component 4 to provide part of the power, the service life of the motor 31 can be extended, the energy consumption can be reduced, and the cost of the curtain motor can be reduced. For the first power component 3, the clutch 33 is used to switch the motor 31 and the transmission member 32 in linkage and non-linkage. In this way, by controlling the motor 31 to run or stop, the curtain can be switched between electric and manual. The structure is simple and the failure rate is low.

[0046] For the first power assembly 3, combined Figure 3-Figure 9The clutch 33 in the first power assembly 3 includes a clutch pin 331, a clutch sleeve 332, a first magnetic member 333, a second magnetic member 334 and a mounting seat 335. The clutch pin 332 is rotatably inserted on the mounting seat 335 and has a first extension portion and a second extension portion extending from the mounting seat 335. The first extension portion is connected to the motor 31, and the second extension portion is rotatably inserted into the clutch sleeve 332. One end of the clutch sleeve 332 is connected to the transmission member 32, and the other end and the mounting seat 335 jointly define an accommodating chamber 34. The clutch pin 331 located in the accommodating chamber 34 is provided with a paddle 3311, which is located in the accommodating chamber. A first slot 3321 is provided on the clutch sleeve 332 in the cavity 34, the first magnetic member 333 is placed in the accommodating cavity 34, and the second magnetic member 334 is arranged in the mounting seat 335; when the motor 31 is running, the paddle 3311 moves the first magnetic member 333 into the first slot 3321, and the first magnetic member 333 limits the paddle 3311 so that the clutch pin 331 drives the clutch sleeve 332 and the transmission member 32 to rotate, so that the roller tube 1 electrically retracts and releases the curtain body 2; when the motor 31 is stationary, the second magnetic member 334 absorbs the first magnetic member 333 and separates it from the first slot 3321, and the roller tube 1 is suitable for manually retracting and releasing the curtain body 2.

[0047] In other words, the transmission member 32 is connected to the roller tube 1 and can rotate coaxially with the roller tube 1 to provide power transmission for the retraction and extension of the curtain body 2; the first extension portion of the clutch pin 331 is connected to the motor 31, and the second extension portion is rotatably inserted into the clutch sleeve 332; one end of the clutch sleeve 332 is connected to the transmission member 32, and the other end and the mounting seat 335 jointly define a receiving chamber 34; a paddle 3311 is provided on the clutch pin 331 located in the receiving chamber 34, so that the motor 31 can drive the paddle 3311 to rotate in the receiving chamber 34; a first slot 3321 is provided on the clutch sleeve 332 located in the receiving chamber 34 A first magnetic member 333 is placed in the accommodating cavity 34, and a second magnetic member 334 is arranged in the adjacent mounting seat 335, so that when the motor 31 is running, the paddle 3311 moves the first magnetic member 333 into the first slot 3321, and the first magnetic member 3311 limits the paddle 3311 so that the clutch pin 331 drives the clutch sleeve 332 and the transmission member 32 to rotate, so that the roller tube 1 electrically retracts and releases the curtain body 2; when the motor 31 is stationary, the second magnetic member 334 absorbs the first magnetic member 333 and separates it from the first slot 3321, so that when switching to manually pulling the curtain body 2, the motor 31 will not be driven to rotate.

[0048] Therefore, by utilizing the cooperation between the first magnetic member 333 and the second magnetic member 334 of the clutch 33, when the motor 31 rotates, the paddle 3311 on the clutch pin 331 pushes the first magnetic member 333 into the first slot 3321, so that the clutch pin 331 can drive the clutch sleeve 332 and the transmission member 32 to rotate, thereby driving the roller tube 1 to rotate; when the motor 31 is stationary, the second magnetic member 334 absorbs the first magnetic member 333 out of the first slot 3321 to achieve a clutch effect, so that the curtain body 2 can be retracted and released without driving the motor 31 to rotate by manually pulling the balance bar; the power component structure of the rolling curtain is simple, the failure rate is low, and the curtain can be switched between electric and manual.

[0049] The transmission member 32 is connected to the reel 1 and can rotate coaxially with the reel 1; specifically, the transmission member 32 includes a holder 321 and an outer sleeve 322, the outer sleeve 322 is sleeved on a clutch sleeve 332, the clutch sleeve 332 is connected to the holder 321, and the holder 321 is buckled with the reel 1, so that when the electric operation is performed, the clutch 33 connects the transmission member 32 with the motor 31 (linkage), so that the motor 31 drives the holder 321 to rotate and drives the curtain body 2 on the reel 1 to be retracted and released, and when the manual operation is performed, the clutch 33 disconnects the transmission connection between the transmission member 32 and the motor 31 (no linkage), so that when the reel 1 rotates, the holder 321 rotates with the reel 1 and will not be linked to the motor 31. The connection between the clutch sleeve 332 and the holder 321 can be that an extension of the clutch sleeve 332 is embedded in the groove of the holder 321. The cooperation between the holder 321 and the roller tube 1 can be that a groove is set on the holder 321 and a protrusion is set on the inner wall of the roller tube 1, so that the holder 321 and the roller tube 1 are snap-connected, and the entire power assembly is hidden in the roller tube 1, making the curtain beautiful.

[0050] For the clutch pin 331, a paddle 3311 is provided at a position of the clutch pin 331 near the second extension portion, so that the paddle 3311 can be driven to rotate by the rotation of the motor 31, and the paddle 3311 paddles the first magnetic member 333 into the first slot 3321 of the clutch sleeve 332. After the first magnetic member 333 enters the first slot 3321, the paddle 3311 can be restricted from rotating in the accommodating chamber 34, which can drive the clutch sleeve 33 to rotate, and the clutch sleeve 33 then drives the holder 321 to rotate, and the rotating holder 321 drives the roller tube 1 to rotate, thereby electrically retracting and releasing the curtain body 2.

[0051] Furthermore, the paddle 3311 may be formed by a cone extending radially from the outer circumference of the clutch pin 331. When the clutch pin 331 rotates, the cone-shaped paddle 3311 may gradually pull the first magnetic member 333 away from the magnetic attraction of the second magnetic member 334 and enter the first slot 3321. The cone-shaped paddle 3311 may be a quadrangular pyramid, and the side of the quadrangular pyramid may gradually pull the first magnetic member 333 away from the magnetic attraction of the second magnetic member 334.

[0052] As for the clutch sleeve 332, one end of the clutch sleeve 332 is connected to the transmission member 32, and the other end and the mounting seat 335 jointly define the accommodating chamber 34. The other end of the clutch sleeve 332 and the mounting seat 335 jointly define the accommodating chamber 34, and the paddle 3311 on the clutch pin 331 can be limited to rotate in the accommodating chamber 34, and the first magnetic member 333 can be limited in the accommodating chamber 34; a first slot 3321 is provided on the clutch sleeve 332 in the accommodating chamber 34. When the motor 31 is running, the paddle 3311 moves the first magnetic member 333 into the slot 3311, and the first magnetic member 333 limits the paddle 3311 so that the clutch pin 331 drives the clutch sleeve 332 and the transmission member 32 to rotate, so that the roller tube 1 can electrically retract and release the curtain body 2. It can be understood that the clutch sleeve 332 has a concave cavity at one end facing the mounting seat 335, and the concave cavity cooperates with the mounting seat 335 to form a accommodating cavity 34. The first card slot 3321 is set on the inner wall of the accommodating cavity 34. When the first magnetic component 333 is moved into the first card slot 3321, the top of the conical paddle 3311 is located in the card position formed between the first magnetic component 333 and the inner wall of the accommodating cavity 34. The first card slot 3321 limits the movement of the first magnetic component 333, and the first magnetic component 333 limits the rotation of the paddle 3311, so that the paddle drives the clutch sleeve 332 to rotate as a whole.

[0053] As for the first magnetic member 333, the first magnetic member 333 is placed in the accommodating chamber 34, and the first magnetic member 333 is moved into the first slot 3321 on the clutch sleeve 332 by rotating the paddle 3311. The first magnetic member 333 limits the paddle 3311 so that the clutch pin 331 drives the clutch sleeve 332 and the transmission member 32 to rotate, so that the roller tube 1 can electrically retract and release the curtain body 2. When the motor 31 is stationary, the paddle 3311 and the first magnetic member 333 are dislocated. Due to the magnetic attraction between the second magnetic member 334 and the first magnetic member 333, the first magnetic member is reset. In this way, when the roller tube 1 drives the transmission member 32 and the clutch sleeve 332 to rotate, the clutch sleeve 332 will not drive the clutch pin 331 to rotate. Among them, the first magnetic member 333 can be a magnet member, and the first magnetic member 333 can be a cylindrical magnet, which is directly placed in the accommodating chamber 34.

[0054] As for the second magnetic member 334, the second magnetic member 334 surrounds the outer circumference of the clutch pin 331; when the motor 31 is stationary, the second magnetic member 334 can reset the first magnetic member 333. Specifically, the second magnetic member 334 can be an iron ring, which is sleeved on the clutch pin 331, wherein the outer diameter of the iron ring can be set to be slightly larger than the diameter of the clutch pin 331, and there is still a distance between the outer circumference of the iron ring and the inner wall of the accommodating cavity 34. In this way, when the motor 31 stops rotating, the inner sleeve 3352 can adsorb the first magnetic member 333 on the first slot 3321 through the magnetic attraction of the second magnetic member 334 and the first magnetic member 333, so that the paddle 3311 and the clutch sleeve 332 are in a disengaged state.

[0055] For the mounting seat 335, the mounting seat 335 includes a fixed seat 3351 and an inner sleeve 3352. The outer end surface of the inner sleeve 3352 and the clutch sleeve 332 jointly define a accommodating chamber 34. A boss is provided at one end of the fixed seat 3351. The boss is inserted into the inner sleeve 3352 to abut the second magnetic component 334 against the inner end surface of the inner sleeve 3352; the accommodating chamber 34 is jointly defined by the outer end surface of the inner sleeve 3352 and the clutch sleeve, so that the first magnetic component 333 and the paddle 3311 of the clutch pin shaft 331 are limited to move in the accommodating chamber 34; the boss is inserted into the inner sleeve 3352 to abut the second magnetic component 334 against the inner end surface of the inner sleeve 3352, so that the second magnetic component 334 is limited to the inner end surface of the inner sleeve 3352, so as to facilitate the assembly of the second magnetic component 334. In addition, the assembly of the fixing seat 3351 and the inner sleeve 3352 can be a matching structure of a pin and a hole.

[0056] For the motor 31, the power output shaft of the motor 31 is connected to the clutch pin shaft 331. Specifically, a channel is provided on the clutch pin shaft 331 along the axial direction, and the power output shaft of the motor 31 is inserted in the channel.

[0057] In addition, the first power assembly 3 may further include a battery pack 35 and a support tube 36 . The battery pack 35 is disposed in the support tube 36 and connected to the motor 31 . The battery pack 35 may supply power to the motor 31 .

[0058] In other examples, the first power assembly 3 may also include a grating detector 37 and an end cover 38. One end of the support tube 36 is connected to the mounting seat 335, and the other end is connected to the grating detector 37. By connecting one end of the support tube 36 to the mounting seat 335, the power assembly of the rolling curtain can be reinforced and supported as a whole. At the same time, the motor 31 and the battery pack 35 are arranged inside the support tube 36, so that the support tube 36 and the roller tube 1 are easy to install and more beautiful.

[0059] As for the grating detector 37, the grating detector 37 is arranged on the end cover 38; the grating detector 37 includes a grating PCBA 371, a grating 372 and a PCB box 373, the grating PCBA 371 is arranged on the extension of the support tube 36, the grating 372 is arranged on the PCB box 373 and is connected to the PCB board 374 in the PCB box 373; when the support tube 36 rotates, the grating PCBA 371 cooperates with the grating 372 to detect the number of positive and negative rotations; by cooperating with the grating PCBA 371 and the grating 372 to detect the number of positive and negative rotations of the support tube 36, the rotation of the motor 31 can be accurately controlled to control the position of the curtain body 2 to be retracted and released. In addition, the PCB board 374 can control the output torque and rotation direction of the motor 31, so as to realize the up and down movement of the curtain body 2, the speed is adjustable, and the highest point and the lowest point are adjustable. The PCB board 374 adopts the existing editable control technology, which will not be described in detail here. Therefore, by setting the grating detector 37, the curtain can be operated electrically in a more intelligent manner, realizing one-key opening and one-key closing of the curtain, overload protection of the motor and setting of the lowest stop position of the curtain.

[0060] Combination Fig.10 and Fig.11 For the second power assembly 4, it also includes a mounting rod 43. A plurality of second slots 411 are defined on the bracket 41. Each second slot 411 is suitable for placing a clockwork spring 42. The mounting rod 43 is inserted into the clockwork spring 42 on the bracket 41 to position the clockwork spring 42.

[0061] The number of the plurality of winding springs 42 may be determined according to the weight requirement of the curtain body 2 .

[0062] As for the second slots 411 on the bracket 41, a plurality of second slots 411 are arranged at intervals along the length direction of the bracket 41. In this way, a plurality of springs 42 are arranged at intervals along the length direction of the bracket 41 to work together.

[0063] Furthermore, the inner end of the spring 42 is connected to the mounting rod 43, and the outer end of the spring 42 is connected to the bracket 41. In other words, a plurality of springs 42 are integrally positioned on the bracket 41 through the mounting rod 43, and then connected to the mounting rod 43 through their inner ends, and connected to the bracket 41 through their outer ends, so that when the curtain body 2 is pulled to drive the roller tube 1 to rotate, the spring 42 generates a pulling force. The pulling force forms a torque balance with the curtain body 2 and the balance rod at the bottom of the curtain body 2, so that the curtain body 2 can be kept at any height with a slight drag or pulling force.

[0064] The connection between the bracket 41 and the roller tube 1 can be that a protrusion is provided in the roller tube 1, and a groove is provided on the bracket 41, and the protrusion and the groove cooperate with each other to set the second power assembly 4 at the second end of the roller tube 1. Therefore, when the curtain body 2 is pulled, the roller tube 1 rotates to rotate the bracket 41, and then the spring spring 42 generates tension.

[0065] Therefore, the assembly composed of the spring 42 and the bracket 41 can be used as a power assembly to drive the curtain body 2 to move and position, and can share the pressure of the motor 31, so that the service life of the motor 31 is extended, energy consumption is reduced, and cost is reduced.

[0066] In order to better understand the present embodiment, the following further describes the working process of the present embodiment: in the electric state, when the motor 31 rotates, it can drive the paddle 3311 on the clutch pin 331 to rotate, thereby driving the first magnetic member 333 to move. When the first magnetic member 333 moves into the first slot 3321 in the clutch sleeve 332, the first magnetic member 333 limits the paddle 3311 so that the clutch pin 331 drives the clutch sleeve 332 and the transmission member 32 to rotate, thereby causing the roller tube 1 to electrically retract and release the curtain body 2. When the motor 31 is stationary, The second magnetic member 334 absorbs the first magnetic member 333 and separates it from the first slot 3321, realizing a clutch action to switch it from an electric state to a manual state. In the manual state, due to the setting of the second power assembly 4, when the balance bar at the bottom of the curtain body 2 is manually pulled to different heights, the clockwork spring 42 generates different pulling forces to keep the curtain body 2 at any height, wherein the clockwork spring 42 cooperates with the counterweight of the curtain body 2 and the balance bar. The more the curtain body 2 is pulled down, the greater the pulling force of the clockwork spring 42 is, and vice versa when the curtain body 2 rises.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0072] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A rolling curtain, characterized in that: include: A roller tube, a curtain body, a first power assembly and a second power assembly; The coiled tube has a first end and a second end that are opposite; The curtain body is wound around the roller tube; The first power assembly is arranged at the first end portion of the winding tube, the first power assembly comprises a motor, a transmission member and a clutch, the transmission member is connected to the winding tube and can rotate coaxially with the winding tube, the clutch connects the motor and the transmission member and is suitable for switching the linkage and non-linkage between the two; the clutch comprises a clutch pin shaft, a clutch sleeve, a first magnetic member, a second magnetic member and a mounting seat, the clutch pin shaft is rotatably inserted on the mounting seat and has a first extension portion and a second extension portion, the first extension portion is connected to the motor, and the second extension portion is rotatably inserted into the clutch sleeve, one end of the clutch sleeve is connected to the transmission member, and the other end and the mounting seat jointly define a accommodating cavity, the clutch pin shaft located in the accommodating cavity is provided with a paddle, the clutch sleeve located in the accommodating cavity is provided with a card slot, the first magnetic member is placed in the accommodating cavity, and the second magnetic member is arranged in the mounting seat; When the motor is running, the paddle moves the first magnetic member into the slot, and the first magnetic member limits the paddle so that the clutch pin drives the clutch sleeve and the transmission member to rotate, so that the motor and the transmission member are linked; when the motor is stationary, the second magnetic member absorbs the first magnetic member out of the slot, and the motor and the transmission member are not linked; The second power assembly comprises a bracket and a plurality of springs, wherein the bracket is arranged at the second end of the roller tube, and the springs are arranged on the bracket at intervals so that when the curtain body is pulled to different heights, the springs generate different pulling forces to make the curtain body stay at any height.

2. The roller blind according to claim 1, characterized in that: A cone is radially extended from the outer circumference of the clutch pin shaft to form the paddle.

3. The roller blind according to claim 1, characterized in that: The second magnetic attraction member surrounds the outer circumference of the clutch pin.

4. The roller blind according to claim 1, characterized in that: The first magnetic attraction component is a magnet component, and the second magnetic attraction component is an iron component.

5. The roller blind according to claim 1, characterized in that: The second power assembly also includes a mounting rod. The bracket defines a plurality of slots, each of which is suitable for accommodating a clockwork spring. The mounting rod is inserted into the clockwork spring on the bracket to position the clockwork spring.

6. The roller blind according to claim 5, characterized in that: A plurality of the card slots are arranged at intervals along the length direction of the bracket.

7. The roller blind according to claim 5, characterized in that: The inner end of the clockwork spring is connected to the mounting rod, and the outer end of the clockwork spring is connected to the bracket.

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