An electric louver window opener and control method

Abstract

The present invention relates to the technical field related to blinds drivers, and discloses an electric blinds opener and control method. The electric blinds opener includes a housing assembly, a motor assembly, a telescopic assembly, and a manual control assembly. The motor assembly and the telescopic assembly are mounted in the housing assembly. The telescopic assembly includes a lead screw, a nut, a nut connecting portion, and an actuator rod. The manual control assembly includes an operating rod, a first cylinder, a second cylinder, a third cylinder, a connecting portion, and a locking plate. When the nut connecting portion is connected to the nut, the connecting portion is inserted into a connecting hole, a positioning plate abuts against the outer surface of the nut, and a gap exists between the locking plate and the lead screw. By integrating the manual control assembly into the electric blinds opener, the problems of increased volume and material costs caused by the need to separately provide a manual control assembly in traditional solutions are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field related to blind drivers, and in particular to an electric blind opener and a control method thereof. Background Art

[0002] The shutters used on special vehicle equipment are used to achieve ventilation and sealing in the equipment compartment. Traditional solutions mostly use manual or hydraulic mechanisms to complete this action. Regarding the hydraulic control mechanism currently used to open and close the shutters of a certain type of special vehicle, when used at sea, due to the expansion force of the gas in the power compartment, the hydraulic control valve, hydraulic cylinder and pipeline depressurize, resulting in unreliable control and actuator mechanisms, which can easily cause the shutters to open automatically, causing a large amount of water to enter the vehicle, and even causing a major safety hazard of the vehicle sinking. Therefore, this application proposes an electric shutter opener. In the prior art, electric shutters are generally such as the solutions disclosed in Patent Nos.: CN217712335U and CN208534378U. It includes an electric telescopic rod and a shutter assembly. The shutter movement is controlled by the electric telescopic rod, but when the power is off, the electric telescopic rod cannot control the shutter. CN217712335U discloses a solution with manual control, but as shown in the solution, the manual control component and the electric control component are separately set, resulting in an increase in occupied space, which is not conducive to arrangement in narrow spaces such as vehicles. In addition, when manually controlled, how to achieve labor-saving control and stable locking effect are problems to be solved. In response to the above problems, this application is proposed. Summary of the Invention

[0003] The object of the present invention is to provide an electric shutter window opener which saves the space occupied by the device by integrating electric control and manual control and has a stable locking effect.

[0004] The present invention is achieved through the following technical solutions.

[0005] An electric Venetian blinds opener of the present invention comprises a housing assembly, a motor assembly, a telescopic assembly and a manual control assembly, wherein the motor assembly and the telescopic assembly are mounted in the housing assembly, the telescopic assembly comprises a lead screw, a nut, a nut connecting portion and an actuator rod, the lead screw is connected to the rotor shaft in the motor assembly, the nut is mounted on the lead screw, the nut connecting portion is connected to the actuator rod, the manual control assembly comprises an operating rod, a first cylinder, a second cylinder, a third cylinder, a connecting portion and a locking plate, the first cylinder, the second cylinder and the third cylinder each comprise an inner cavity, a piston rod and a spring, the inner cavity of the first cylinder is connected to the second cylinder and the third cylinder The inner cavity of the cylinder body is connected, the first cylinder body is arranged on the operating rod, the second cylinder body and the third cylinder body are arranged in the nut connecting part, the operating rod is connected to the nut connecting part, the piston rod of the second cylinder body is connected to the connecting part, and the piston rod of the third cylinder body is connected to the locking plate body, the locking plate body is provided with a toothed structure that can cooperate with the thread on the screw, the locking plate body is provided with a positioning plate, and the nut is provided with a connecting hole for inserting the connecting part. When the nut connecting part is connected to the nut, the connecting part is inserted into the connecting hole, the positioning plate abuts against the outer surface of the nut, and there is a distance between the locking plate body and the screw.

[0006] Furthermore, the nut connecting portion is an annular structure, the nut connecting portion is surrounded and arranged on the outside of the nut, a first guide ring is arranged between the nut connecting portion and the inner wall of the shell assembly, and a second guide ring is arranged between the nut and the inner wall of the shell assembly.

[0007] Furthermore, the locking plate is in the shape of an arc plate.

[0008] Furthermore, a magnetic lock is provided on the nut, and a suction plate is provided on the nut connecting portion.

[0009] Furthermore, the nut connecting portion and the actuator rod are integrally formed.

[0010] Furthermore, the housing assembly includes a driver housing, and the driver housing is used to install a drive assembly that drives the motor assembly.

[0011] Furthermore, a battery assembly is provided in the housing assembly.

[0012] Furthermore, a mounting structure is provided at one end of the housing assembly, and a driving connection structure is connected to the actuator rod.

[0013] Furthermore, the driving connection structure is mounted on the actuator rod in an adjustable length.

[0014] A method for controlling an electric Venetian blinds opener, based on the above-mentioned electric Venetian blinds opener, comprises the following steps:

[0015] In electric mode, the motor assembly drives the lead screw to rotate, causing the nut to drive the nut connection part and the actuator rod to perform telescopic movement, thereby controlling the blinds;

[0016] In manual mode, the nut connection part is separated from the nut, and the nut connection part and the actuator rod are driven horizontally to perform telescopic movement to realize the control of the blinds. When the blinds position adjustment is completed, the nut connection part is connected to the screw to achieve a locking effect.

[0017] The beneficial effects of the present invention are as follows: by integrating the manual control component into the electric window opener, the problems of increased volume and increased material costs caused by the need to separately set up the manual control component in the traditional solution are avoided. At the same time, the screw rod is used in this application to achieve a locking effect during both electric control and manual control, solving the problem of the need to separately set up a locking structure for the manual control component in the traditional solution. At the same time, when the manual control method is used in this application, it is a parallel direct drive, rather than the traditional indirect drive method after rotating the screw rod, which makes manual control faster and more labor-saving, and can be quickly restored after power is turned on, without affecting the position control of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of an electric shutter window opener;

[0021] Figure 2 This is a schematic diagram of the structure of the electric blinds window opener after manual control;

[0022] Figure 3 It is a top sectional view of an electric blinds window opener;

[0023] Figure 4 for Figure 1 A magnified schematic diagram of the manual control component in the middle;

[0024] Figure 5 for Figure 2 A magnified schematic diagram of the manual control component in the middle;

[0025] Figure 6 It is a perspective view of an electric blinds window opener;

[0026] Figure 7 It is the main thread logic diagram;

[0027] Figure 8 It is the logic block diagram of interactive information thread;

[0028] Figure 9 This is the logic block diagram of the fault information thread. DETAILED DESCRIPTION

[0029] The following combination Figure 1-6 The present invention will be described in detail.

[0030] Example 1:

[0031] The electric shutter window opener of the present invention comprises a housing assembly, a motor assembly, a telescopic assembly and a manual control assembly 50. Figure 1 The housing assembly includes a front end cover 104, a front cylinder body 103, a motor housing 102, a rear cylinder body 101 and a rear cylinder cover 105, which are arranged in sequence from left to right. The motor assembly is arranged in the motor housing 102, and the telescopic assembly is installed in the front cylinder body 103. The housing assembly forms an integral long cylindrical structure, which is not much different from the volume of a traditional electric telescopic rod. The motor assembly can adopt any motor in the existing technology. Its main structure includes a stator assembly 204, a rotor assembly 205, a rotor shaft 203, a tapered roller bearing 206, etc. An induction magnetic steel assembly 202 is installed on the rotor shaft 203. An encoder 201 is installed around the induction magnetic steel component 202. The principle of this part of the motor component is consistent with that of the traditional motor and will not be repeated here. Preferably, a driver housing 106 is also provided on the outside of the rear cylinder body 101. The driver housing 106 is used to install a drive component of the drive motor assembly, such as a drive circuit board 107. A stator wire outlet hole 108 and an encoder wire outlet hole 109 are provided on the rear cylinder body 101 and the motor housing 102. By integrating the actuator, motor drive and controller into one, the device has the characteristics of compact structure, small size, light weight, fast response and high reliability.

[0032] like Figure 1The telescopic assembly includes a screw 301, a nut 302, a nut connecting portion 303 and an actuator rod 304. The screw 301 is connected to the rotor shaft 203 in the motor assembly. In this embodiment, the screw 301 and the rotor shaft 203 can be integrally formed, that is, threads are processed on one side of the rotor shaft. Alternatively, the screw and the rotor shaft 203 can be connected. The nut 302 is installed on the screw 301. The thread pair between the screw 301 and the nut 302 is self-locking. Generally, the thread lead angle is less than the equivalent friction angle, such as a trapezoidal screw. The nut connecting portion 303 is connected to the actuator rod 304. Preferably, the nut connecting portion 303 and the actuator rod 304 can be integrally formed or separately connected. The nut connecting portion 303 is cylindrical, and the nut connecting portion 303, the actuator rod 304, the screw 301 and the nut 302 are coaxially arranged.

[0033] A drive connection structure 401 and an installation structure 402 are respectively provided at one end of the actuator rod 304 and the rear cylinder cover 105, which are used to connect the shutter adjustment drive structure and the installation position structure respectively. The shapes are set according to the specific use environment. For example, in this embodiment, the drive connection structure 401 and the installation structure 402 both adopt a through-hole structure.

[0034] like Figure 4 The manual control assembly 50 includes an operating rod 504, a first cylinder body 502, a second cylinder body 505, a third cylinder body 509, a connecting portion 506 and a locking plate body 508. Specifically, an operating handle 501 is installed on the top of the operating rod 504, and the bottom end is connected to the nut connecting portion 303. A slide groove 106 for the operating rod 504 to pass through is opened on the front cylinder body 103, and a dust cover can be set in the slide groove 106, such as by connecting it to the slide groove 106 and the operating rod 504 through a flexible fabric.

[0035] The first cylinder 502, the second cylinder 505 and the third cylinder 509 all include an inner cavity, a piston rod and a spring. The piston rod is connected to the piston in the inner cavity. The inner cavity of the first cylinder 502 is connected to the inner cavities of the second cylinder 505 and the third cylinder 509. The first cylinder 502 is arranged on the front end surface of the operating rod 504, and the second cylinder 505 and the third cylinder 509 are arranged in the nut connecting part 303. The cylinder here does not refer to a structure similar to a cylinder arranged in the nut connecting part 303, but refers to a structure composed of an inner cavity, a piston rod and a spring. The inner cavity can be directly formed in the nut connecting part 303, or a cylindrical cylinder can be arranged in the nut connecting part 303, and then An inner cavity is formed in the middle, the piston rods of the second cylinder 505 and the third cylinder 509 are extended downward, the first cylinder 502 is connected to the lower cavity of the second cylinder 505 and the third cylinder 509, the spring is connected to the piston, the piston rod of the first cylinder 502 is connected to the extrusion operation plate 503, the piston rod of the second cylinder 505 is connected to the connecting portion 506, and the piston rod of the third cylinder 509 is connected to the locking plate 508. The locking plate 508 is provided with a toothed structure that can cooperate with the thread on the screw 301, that is, a partial threaded structure. When the locking plate 508 and the screw 301 cooperate to form a threaded pair, it also has a self-locking effect. A positioning plate 507 is provided on the locking plate 508. Figure 4 , a connecting hole 308 for inserting the connecting portion 506 is provided on the nut 302. When the nut connecting portion 303 is connected to the nut 302, the connecting portion 506 is inserted into the connecting hole 308, and the positioning plate 507 abuts against the outer surface of the nut 302. At this time, the spring in the third cylinder 509 is in a compressed state, and the locking plate 508 has a tendency to move downward to cooperate with the screw. The angular positioning plate 507 abuts against the outer end surface of the nut 302 to prevent the locking plate 508 from falling, so that there is a distance between the locking plate 508 and the screw 301, that is, they are in a non-contact state, such as Figure 4 .

[0036] When manually operated, the squeezing operation plate 503 is squeezed upward, the spring in the first cylinder 502 is compressed, and the hydraulic oil therein enters the lower chamber of the second cylinder 505 and the third cylinder 509 through the oil path in the operating rod 504 and the nut connecting part 303, causing the piston in the second cylinder 505 to rise, and the connecting part 506 to disengage from the connecting hole 308. At this time, the nut connecting part 303 can be disengaged from the nut 302, and the operating handle 501 is manually pushed to move the nut connecting part 303, so as to realize the telescopic adjustment of the actuator rod 304 and thus adjust the opening angle of the blinds. When adjusted to the desired position, the squeezing operation plate 503 is released, and the hydraulic oil in the second cylinder 505 and the third cylinder 509 flows back to the first cylinder 502 under the action of the spring, and the connecting part 506 descends. Under the action of the spring and the hydraulic oil, it descends to the moving height and stops, and keeps a distance from the lead screw 301. The locking plate 508 descends under the action of the spring. Figure 5Since the positioning plate 507 is no longer blocked by the end face of the nut 302 at this time, the locking plate 508 drops under the action of the spring to contact and cooperate with the lead screw 301, thereby achieving a locking effect on the actuator rod 304.

[0037] The nut connecting portion 303 is an annular structure and is arranged around the outside of the nut 302. A first guide ring 601 is arranged between the nut connecting portion 303 and the inner wall of the shell assembly, and a second guide ring 602 is arranged between the nut 302 and the inner wall of the shell assembly.

[0038] Preferably, in order to increase the contact area and enhance the friction force, the locking plate 508 can be configured as an arc-shaped plate.

[0039] Example 2: Based on Example 1, the driving component also includes a remote communication module, such as a Bluetooth module, a 4G / 5G / cellular network module, etc., to achieve remote communication control of the motor component.

[0040] Example 3: Based on Example 1 or 2, a drive connection structure 401 is provided at one end of the housing assembly and is mounted on the actuator rod 304 with adjustable length, such as Figure 1 An adjustment long hole 305 is provided on the actuator rod 304, which adapts to different installation requirements by controlling the extension length of the drive connection structure 401. After adjustment, the drive connection structure 401 is fixed by means of pins, nuts, etc.

[0041] Example 4: Based on Example 1, 2 or 3, the housing assembly includes a battery assembly 901 provided in the housing assembly. In the solution of Example 1, when the nut 302 moves to the middle position of the movable stroke, manual rightward rotation ( Figure 1 At this time, the battery assembly 901 can be set. When the power is cut off, the battery assembly 901 can be used for emergency electric mode. Due to the size limitation, the battery assembly 901 cannot be set larger. Therefore, in non-special emergency situations, after the power is cut off, the battery assembly 901 can be used to reset the nut 302 to the rightmost position, and then manually control it.

[0042] Example 5: Based on Example 1, 2, 3 or 4, in order to improve the connection strength between the nut connecting portion 303 and the nut 302 during electric control, and to avoid erroneous operation during electric control, as shown in FIG. Figure 4 A magnetic lock 307 is provided on the nut 302, and a suction plate 306 is provided on the nut connecting part 303. The power circuit is provided in the shell assembly. When in the electric control state, the magnetic lock 307 and the suction plate 306 are attracted and locked. After the power is cut off, the magnetic lock 307 is powered off, and manual control can be performed at this time.

[0043] On the basis of the fourth embodiment, the power on and off of the magnetic lock 307 by the battery assembly 901 can be switched manually.

[0044] In addition, when the magnetic lock 307 is set, a position switch can be set at the magnetic lock 307. During the reset process after power is turned on, when it is detected that the suction plate 306 reaches the specified position, the magnetic lock 307 is powered on. This part of the control circuit is integrated in the drive component or a separate PLC drive is set.

[0045] Example 6: Based on any of the examples, the following control principle can be used to achieve rapid opening and closing control: Figure 7-9

[0046] 1. Main thread

[0047] The main thread of the control system will enter different modes according to the information of each independent thread, and will adjust the parameters of the subsystem accordingly in different modes. The logic block diagram is as follows Figure 7 As shown. During system initialization, all system parameters are tested. If any system parameter anomalies are detected, the system enters fault mode; otherwise, it enters standby mode. In either mode, if a fault signal is detected from the fault information thread, the main thread enters fault mode. In fault mode, if all fault signals from the fault threads are eliminated, the main thread transitions from fault mode to standby mode. In standby mode, if a motion signal is detected from the interactive information thread, the main thread enters extend or retract mode. In extend or retract mode, if a stop signal is received from the interactive information thread, the system enters standby mode.

[0048] 2. Synchronous timing thread

[0049] The synchronization timing thread's primary function is to configure thread locks for child threads and to standardize the time spans for discrete control of each thread, preventing confusion among discrete control states at different priorities. As the primary timer, the synchronization timing thread provides time points for data and log recording.

[0050] 3. Interactive information thread

[0051] The interactive information thread mainly processes the input of external control commands and feeds back the corresponding information. The interactive port of the system can be configured according to actual needs, such as RS485, RS232, CAN, etc. The communication protocol can also be configured according to actual needs, such as Modbus-RTU, CAN-Open, etc. Its logic block diagram is as follows Figure 8 As shown in the figure, the interactive information thread also takes on the functions of reading physical buttons and adjusting the brightness of signal indicators. In actual engineering applications, the data from the system interactive port may conflict with the logic of the physical buttons. The interactive information thread needs to align the two to avoid abnormal operation.

[0052] 4. Fault information thread

[0053] The fault information thread will judge the input signal based on the input data of each sensor and the preset fault judgment method. If there is a corresponding fault, the corresponding fault flag will be set. The logic block diagram is as follows Figure 9 As shown in the figure, the main thread adjusts its mode based on each fault flag. The fault information thread applies a sliding window filter to the fault judgment results to prevent system misoperation caused by sensor misjudgments. The sensitivity of each fault detection can be adjusted by setting the sliding window interval. If the controller detects an abnormal state, such as undervoltage or overvoltage, the system will enter protection mode and store critical data.

[0054] 5. Control circuit board

[0055] The control circuit board adopts a 4-layer PCB layout design, the motor drive adopts phase-shifted full-bridge control, and the control circuit board (drive circuit board 107) is installed in the driver housing.

[0056] Manual function:

[0057] When the device loses power or is in an emergency state, the shutters can be opened and closed by a manual device to ensure the normal use of the device.

[0058] A method for controlling an electric blinds window opener comprises the following steps:

[0059] In electric mode, the motor assembly drives the lead screw 301 to rotate, causing the nut 302 to drive the nut connection part 303 and the actuator rod 304 to perform telescopic movement, thereby controlling the blinds;

[0060] Specifically, the connection method and control method with the blinds can adopt the solutions in patents CN217712335U, CN208534378U, or other solutions in the prior art.

[0061] When power is cut off and emergency manual control is required, hold the operating handle 501 and squeeze the operating plate 503 upwards. The spring in the first cylinder 502 is compressed, and the hydraulic oil therein enters the lower chambers of the second cylinder 505 and the third cylinder 509 through the oil path in the operating rod 504 and the nut connecting part 303, causing the piston in the second cylinder 505 to rise and the connecting part 506 to disengage from the connecting hole 308. At this time, the nut connecting part 303 can be disengaged from the nut 302. Manually push the operating handle 501 to move the nut connecting part 303 to achieve the telescopic adjustment of the actuator rod 304. Then adjust the opening angle of the blinds. When it is adjusted to the desired position, release the squeezing operating plate 503. The hydraulic oil in the second cylinder 505 and the third cylinder 509 flows back to the first cylinder 502 under the action of the spring. The connecting part 506 descends. Under the action of the spring and the hydraulic oil, it stops after descending to the moving height and maintains a distance from the screw 301. The locking plate 508 descends under the action of the spring. Since the positioning plate 507 is no longer blocked by the end face of the nut 302 at this time, the locking plate 508 descends under the action of the spring until it contacts and fits tightly with the screw 301, thereby achieving a locking effect on the actuator rod 304.

[0062] In simple terms, the nut connection part 303 is separated from the nut 302, and the nut connection part 303 and the actuator rod 304 are driven horizontally to perform telescopic movement to realize the control of the blinds. When the position adjustment of the blinds is completed, the nut connection part 303 is connected to the screw 301 to achieve a locking effect.

[0063] In traditional solutions, if manual control is completed by rotating the screw after power failure, manual rotation is required, which is laborious and inefficient. This application adopts a mode in which the drive module is separated from the screw, which can directly drive and control the blinds horizontally, with simple and fast operation, and can also use the screw to achieve a locking effect. In addition, since the nut and screw are not moved during manual drive, they can be quickly reset after power is turned on, and will not affect the position control and accuracy of the nut and screw.

[0064] After power is turned on, the squeezing operation plate 503 is squeezed upward to make the connecting part 506 and the locking plate 508 rise, and the motor assembly is turned on to make the screw drive nut 302 move until it moves to the connecting part 506 and the connecting hole 308 are aligned, and then the squeezing operation plate 503 is released to achieve the docking of the nut connecting part 303 and the nut 302.

[0065] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand and implement the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An electric shutter window opener, characterized by: The invention comprises a housing assembly, a motor assembly, a telescopic assembly and a manual control assembly (50), wherein the motor assembly and the telescopic assembly are installed in the housing assembly, the telescopic assembly comprises a lead screw (301), a nut (302), a nut connecting portion (303) and an actuator rod (304), the lead screw (301) is connected to a rotor shaft (203) in the motor assembly, the nut (302) is installed on the lead screw (301), the nut connecting portion (303) is connected to the actuator rod (304), and the actuator rod (304) is connected to the lead screw (301). ), the manual control assembly (50) includes an operating rod (504), a first cylinder (502), a second cylinder (505), a third cylinder (509), a connecting portion (506) and a locking plate (508), the first cylinder (502), the second cylinder (505) and the third cylinder (509) each including an inner cavity, a piston rod and a spring, the inner cavity of the first cylinder (502) is connected to the inner cavities of the second cylinder (505) and the third cylinder (509), the first cylinder (502) is arranged on the operating rod (504), the second cylinder body (505) and the third cylinder body (509) are arranged in the nut connecting part (303), the operating rod (504) is connected to the nut connecting part (303), the piston rod of the second cylinder body (505) is connected to the connecting part (506), and the piston rod of the third cylinder body (509) is connected to the locking plate body (508), and the locking plate body (508) is provided with a threaded part that can be screwed to the screw (301). The locking plate body (508) is provided with a positioning plate (507), and the nut (302) is provided with a connecting hole (308) for inserting the connecting portion (506). When the nut connecting portion (303) is connected to the nut (302), the connecting portion (506) is inserted into the connecting hole (308), and the positioning plate (507) abuts against the outer surface of the nut (302). There is a distance between the locking plate body (508) and the screw (301).

2. The electric shutter opener according to claim 1, characterized in that: The nut connecting portion (303) is an annular structure, and the nut connecting portion (303) is arranged around the outside of the nut (302). A first guide ring (601) is arranged between the nut connecting portion (303) and the inner wall of the shell assembly, and a second guide ring (602) is arranged between the nut (302) and the inner wall of the shell assembly.

3. The electric shutter opener according to claim 2, characterized in that: The locking plate (508) is in the shape of an arc plate.

4. The electric shutter opener according to claim 2 or 3, characterized in that: The nut (302) is provided with a magnetic lock (307), and the nut connecting portion (303) is provided with a suction plate (306).

5. The electric shutter window opener according to claim 4, characterized in that: The nut connecting portion (303) and the actuator rod (304) are integrally formed.

6. The electric shutter opener according to claim 1 or 5, characterized in that: The housing assembly includes a driver housing (106), and the driver housing (106) is used to install a drive assembly for driving the motor assembly.

7. The electric shutter opener according to claim 6, characterized in that: A battery assembly (901) is arranged in the housing assembly.

8. The electric shutter opener according to any one of claims 1, 5 and 7, characterized in that: One end of the housing assembly is provided with a mounting structure (402), and the actuator rod (304) is connected to a driving connection structure (401).

9. The electric shutter opener according to claim 8, characterized in that: The driving connection structure (401) is mounted on the execution rod (304) in an adjustable length.

10. A method for controlling an electric Venetian blinds opener, based on the electric Venetian blinds opener according to any one of claims 1 to 9, characterized in that: The following steps are involved: In the electric mode, the motor assembly drives the lead screw (301) to rotate, causing the nut (302) to drive the nut connecting portion (303) and the actuator (304) to perform telescopic movement, thereby achieving control of the blinds; In manual mode, the nut connecting portion (303) is separated from the nut (302), and the nut connecting portion (303) and the actuator (304) are driven horizontally to perform telescopic movement to achieve control of the blinds. When the blinds position adjustment is completed, the nut connecting portion (303) is connected to the lead screw (301) to achieve a locking effect.

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