A driving device for electric curtains

Abstract

The invention discloses a driving device for an electric curtain, comprising an integrally formed plastic shell and a drawer frame arranged in the plastic shell, wherein a control panel and a driving motor are arranged on the drawer frame. The device of the invention adopts an integrally formed plastic shell to replace the existing aluminum profile, thereby solving the safety problems of internal short circuit, conductivity, fire and the like caused by residual aluminum chips in the shell, and adopts a plastic end cover to be embedded or sunken in the plastic shell, so that the overall appearance structure of the device has no step difference and no color difference, and no fracture is generated at the connection with the plastic end cover, which meets the market demand; in addition, the device adopts a drawer frame to be drawn into the plastic shell, and the driving motor and the control panel are supported on the drawer frame, which is convenient for device assembly and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of electric curtains, in particular to a driving device for electric curtains. Background Art

[0002] With the continuous improvement of people's living standards and the popularization of electric curtains, people's safety requirements, performance requirements, and external aesthetic requirements for electric curtains are also getting higher and higher; the electric curtain drive devices currently on the market are mainly composed of main components such as casing, motor, clutch mechanism, reducer, control panel, power supply part, and the casing of the drive device is often composed of three parts, plastic upper end cover, aluminum alloy profile and plastic lower end cover. When the aluminum alloy profile is processed and cut, a large amount of aluminum chips will remain on its inner wall, and the power supply part of the drive device is mostly a switching power supply, which is connected to external strong electricity. During use, the residual aluminum chips will cause malfunctions to the switching power supply and control panel, such as poor signal reception of the control panel, short circuit and fire of components, conductivity of aluminum profiles, etc., which will cause many after-sales problems and safety hazards.

[0003] In addition, in the actual production process, the material processing accuracy of the plastic cover and the aluminum profile is quite different. When the plastic cover is connected to the two ends of the aluminum profile, the outer shell will have steps, including the front section (plastic front cover), the middle section (aluminum profile), and the rear section (plastic rear cover), and there will be segment seams at the connection. Since the aluminum profile is cut vertically, there are steps in the outer shell and the aluminum profile is protruding at the cut, which is dangerous in production and use and can easily scratch the user. At the same time, the inconsistent outer shell material can easily cause color difference, which will become more obvious after a period of use and is very unsightly. Summary of the invention

[0004] The object of the present invention is to provide a driving device for an electric curtain, so as to solve the safety problem and the overall unsightly problem of the driving device mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution, a driving device for an electric curtain, comprising:

[0006] An integrally formed plastic shell, wherein at least one end of the plastic shell is provided with a plastic end cap, and the outer end surface of the plastic end cap is flush with the end surface of the plastic shell or is recessed into the plastic shell;

[0007] A drawer frame is arranged in a plastic shell, and a driving motor and a control board are installed on the drawer frame. The driving motor is electrically connected to the control board.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the device of the present invention adopts an integrally formed plastic shell to replace the existing aluminum profile, which solves the safety problems of internal short circuit, conductivity, fire and the like caused by residual aluminum chips in the shell, and adopts a plastic end cover to be embedded or sunken in the plastic shell, so that the overall appearance structure of the device has no step difference, no color difference, and no break at the connection with the plastic end cover, which meets market demand; in addition, the device adopts a drawer frame to be drawn in the plastic shell, and the drive motor and the control board are supported on the drawer frame, which is convenient for device assembly and improves production efficiency.

[0009] Preferably, one end of the drawer frame is flush with one end surface of the plastic shell to form an end cover, and the other end of the drawer frame extends into the plastic shell and is fixedly connected to the inside of the plastic shell. The end cover of the drawer frame is flush with the plastic shell so that the plastic shell as a whole has no step difference or color difference, and no break is generated at the connection between the terminal and the plastic shell.

[0010] Preferably, a positioning portion which can be used for fixed connection to the end of the drawer frame is integrally formed in the plastic shell, and a connecting window is opened on the positioning portion.

[0011] Preferably, a mobile control module is inserted into the drawer frame, and the mobile control module is inserted from the connection window and connected in series with the control board. Inserting the mobile control module from the connection window and connecting it in series with the control board can facilitate replacement of the mobile control module.

[0012] Preferably, the positioning portion is provided with connecting holes in its circumference, and the end of the drawer frame is provided with mounting holes matching with the connecting holes, and one end of the drawer frame is fixedly connected to the positioning portion via screws, the connecting holes and the mounting holes.

[0013] Preferably, a clamping foot is protruded from one side of the plastic end cover toward the plastic shell, and a clamping groove cooperating with the clamping foot is provided on the positioning portion, and the plastic shell is detachably connected to the positioning portion via the clamping foot and the clamping groove.

[0014] Preferably, the drawer frame is composed of a front frame, a middle frame and a rear frame, wherein:

[0015] The drive motor is supported on the front frame, and a shock-absorbing sleeve is also provided on the drive motor to prevent the vibration generated by the drive motor from generating noise between the drawer frame and affecting the performance of the drive device;

[0016] An isolation plate is integrally provided on the middle frame along the entire length direction of the middle frame, the isolation plate is vertically arranged with the middle frame, and the middle frame and the isolation plate are integrally provided with limit members on both side end surfaces opposite to each other, the control panel is clamped on one side of the isolation panel through the limit member, and a limit block is provided at one end of the isolation panel on one side close to the front frame; a switch power supply board is provided on the other side of the isolation panel, the switch power supply board is clamped on the side of the isolation panel through the limit member, and the isolation panel is provided with limit plates convexly provided at both ends of one side of the isolation panel, the control panel and the transformer are isolated and arranged by the isolation panel to prevent interference from strong and weak electricity and affect the service life of other electrical components, and at the same time, in order to enable the drive device to adapt to the vibration generated during the operation of the drive motor, the control panel and the switch power supply board are better fixed by setting limit members, limit blocks, etc., thereby increasing the stability of the operation of the drive device;

[0017] The rear frame is integrally provided with a mounting cavity with a limiting plate as one end, a mobile control module is inserted into the mounting cavity, and a docking window is provided on a side of the mounting cavity corresponding to the control board, the mobile control module is connected in series with the control board through the docking window, and at least one limiting column for winding and bending a power line is integrally provided on the outer side of the mounting cavity corresponding to the switch power board, the mobile control module is inserted into the mounting cavity from the connection window, so that one end of the mobile control module is connected in series with the control board through the docking window, the mounting cavity plays the role of positioning the mobile control module, and at the same time, it is also convenient to replace the mobile control module; in addition, the power line is bent to form a blockage against the external tensile force along the direction of the power line, which can increase the tensile force resistance of the power line, and avoid the external tensile force being directly transmitted to the connection point between the power line and the circuit board in the device, causing the welding point of the power line to fall off;

[0018] Preferably, limit plates are evenly distributed on the inner side surfaces of the front frame and the middle frame; isolation strips are evenly distributed on one side surface of the isolation plate corresponding to the control board, and a guide strip is integrally provided in the installation cavity, and the guide strip is in a rounded chamfer shape at the cavity opening corresponding to the installation cavity; in addition, an electric control component is also provided on the outer side of the installation cavity corresponding to the control board, and the electric control component is electrically connected to the control board. The limit plates and isolation strips on the drawer frame can assist the drive motor and the control board to adapt to the vibration generated when the drive motor is working.

[0019] Preferably, a control valve is provided at the positioning portion corresponding to the power control unit, the control valve is connected to the electric control element, and the control valve is also exposed on the plastic end cover; in addition, the cavity opening of the installation cavity is provided corresponding to the connection window of the positioning portion.

[0020] Preferably, a communication conductor joint is exposed at one end of the mobile control module corresponding to the control board, and a corresponding docking joint is connected to the control board, and the docking joint extends into the installation cavity from the docking window. When the mobile control module is inserted into the installation cavity, the communication conductor joint abuts against the docking joint. When the mobile control module needs to be replaced, it is only necessary to pull the mobile control module out of the installation joint to separate the communication conductor joint of the mobile control module from the docking joint of the control board, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the assembly on the drawer frame of the present invention;

[0023] Figure 3 It is a schematic diagram of the decomposition of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the drawer frame of the present invention.

[0025] In the figure: 1. plastic shell; 2. plastic end cover; 2-1. card foot; 3. drawer frame; 3-1. front frame; 3-2. middle frame; 3-3. rear frame; 4. drive motor; 5. control board; 5-1. docking joint; 6. end cover; 7. positioning part; 7-1. connection window; 7-2. connection hole; 7-3. card slot; 8. mobile control module; 8-1. communication conductor; 9. mounting hole column; 10. shock-absorbing sleeve; 11. isolation plate; 11-1. limit block; 11-2. limit plate; 11-3. isolation strip; 12. limit piece; 13. switch power board; 14. mounting cavity; 14-1. docking window; 14-2. limit column; 15. limit piece; 16. electric control element; 17. control valve. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with specific implementation modes.

[0027] In the description of the present invention, it is to 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”, “axial”, “radial”, “circumferential” and the like to indicate orientations or positional relationships, which 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 limiting the present invention.

[0028] 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 at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] See also Figure 1-4 The present invention provides a technical solution: a driving device for an electric curtain, comprising:

[0032] An integrally formed plastic shell 1, wherein at least one end of the plastic shell 1 is provided with a plastic end cap 2, wherein both the plastic shell 1 and the plastic end cap 2 are made of flame-retardant plastic material, and play a role of flame retardancy and fire prevention, and the plastic shell 1 is hollow inside and has a through structure at both ends, and the outer end face of the plastic end cap 2 is flush with the end face of the plastic shell 1 or is recessed in the plastic shell 1. In this specific embodiment, a plastic end cap 2 is provided at one end of the plastic shell 1, and the outer end face of the plastic end cap 2 is flush with the end face of the end of the plastic shell 1, and at the same time, a positioning portion 7 is integrally provided in one end of the plastic shell 1 corresponding to the plastic end cap 2;

[0033] A drawer frame 3, wherein the drawer frame 3 is arranged in the plastic shell 1, and the drawer frame 3 is made of flame-retardant plastic material, which plays a role of flame retardancy and fire prevention, and one end of the drawer frame 3 extends into the plastic shell 1 and is fixedly connected to the positioning portion 7, and the other end of the drawer frame 3 extends to the other end of the plastic shell 1 and forms an end cover 6 in one piece, and the end cover 6 is also flush with the end surface of the end of the plastic shell 1, so that the overall appearance of the drive device does not have step difference and color difference, and at the same time, the connection between the drawer frame 3, the plastic end cover 2 and the plastic shell 1 can be free of breaks; in addition, the drawer frame 3 is provided with a drive motor 4, a control board 5 integrated with a control circuit of the drive motor 4, a switch power supply board 13 for converting voltage, and an integrated The mobile control module 8 of the control module of one or more motor control modes can be arranged on the drawer frame 3, so that the internal structure of the plastic shell 1 can be simpler, the setting of the limit structure can be reduced, and it is easier to form an integral part, which is also convenient for production and assembly. At the same time, the setting of the drawer frame 3 is also convenient for the maintenance and replacement of the assembled parts inside the drive device. More importantly, the drive device separates the control module of the motor control mode from the motor drive circuit. The user can integrate one or more motor control modes on the mobile control module 8 according to actual needs, and then insert the mobile control module 8 into the drive devices of different types of electric curtains, which solves the problem of idle resource waste and greatly reduces the cost of the product.

[0034] The present invention adopts a plastic shell 1 to replace the original aluminum profile, which solves the safety hazard problem of a large amount of aluminum chips remaining in the shell causing internal short circuit, conductivity, fire and the like, and reduces after-sales problems. In addition, the plastic shell 1 is integrally formed, and cooperates with the plastic end cover 2 embedded at the end. The overall structure has no step difference and no color difference, and there is no break at the connection with the plastic end cover 2. The structure is simple, neat and beautiful, and meets market demand. In addition, the plastic shell 1 will not shield the signal and is more suitable for electric curtains to receive signals.

[0035] The drawer frame 3 is composed of a front frame 3-1, a middle frame 3-2 and a rear frame 3-3 from the end cover 6 to the plastic end cover 2, wherein:

[0036] The drive motor 4 is supported on the front frame 3-1, and a reducer and a clutch mechanism are integrated in the drive motor 4. A shock-absorbing sleeve 10 is also sleeved on the drive motor 4, so as to reduce the vibration that may be generated by the operation of the drive motor 4 and avoid affecting the working stability of the drive device;

[0037] The control board 5 and the switch power board 13 are arranged on the middle frame 3-2. The middle frame 3-2 is mainly used to isolate the strong and weak electrical interference of the control board 5 and the switch power board 13. Therefore, the middle frame 3-2 is integrally provided with an isolation plate 11 along the entire length direction of the middle frame 3-2. The isolation plate 11 is vertically arranged with the middle frame 3-2. The control board 5 and the switch power board 13 are respectively arranged on both sides of the isolation plate 11. Specifically, the middle frame 3-2 and the isolation plate 11 are integrally provided with a limiter 12 on both side end surfaces thereof. The control board 5 is clamped on one side of the isolation plate 11 through the limiter 12, and the isolation plate 11 is provided with a limiter at one end of the control board 5 close to the front frame 3-1. Block 11-1; the switch power board 13 is arranged on the other side of the isolation plate 11, and the switch power board 13 is clamped on the side of the isolation plate 11 through a limiter 12, and the isolation plate 11 is provided with limiter plates 11-2 integrally protruding at both ends of one side of the isolation plate 11, and the isolation plate 11 is evenly distributed with isolation strips 11-3 on one side of the isolation plate 11 corresponding to the control board 5. The limiter 12, the limiter block 11-1, and the isolation strip 11-3 assist the isolation plate 11 to stably arrange the control board 5 and the switch power board 13 on both sides of the isolation plate 11, and can also assist the control board 5 and the switch power board 13 to adapt to the vibration that may be generated by the operation of the drive motor 4, thereby increasing the stability of the operation of the drive device;

[0038] The inner side surfaces of the front frame 3-1 and the middle frame 3-2 are evenly distributed with limit plates 15. The limit plates 15 on the drawer frame 3 can assist the drive motor 4 and the control panel 5 in adapting to the vibration generated when the drive motor 4 is working.

[0039] The mobile control module 8 is inserted into the rear frame 3-3. For this purpose, the rear frame 3-3 is integrally surrounded by a limiting plate 11-2 as one end to form an installation cavity 14. The mobile control module 8 is inserted into the installation cavity 14. The specific structure of the mobile control module 8 and the control board 5 in series adopts that the installation cavity 14 is provided with a docking window 14-1 on one side of the control board 5 corresponding to the installation cavity 14, and the mobile control module 8 is provided with a communication conductor 8-1 at one end of the control board 5 corresponding to the control board 5. The control board 5 is connected with a corresponding docking connector 5-1, and the docking connector 5-1 extends into the installation cavity 14 from the docking window 14-1. When the mobile control module 8 is inserted into the installation cavity 14, the communication conductor contact and the docking connector 5-1 are in contact. At the same time, the installation A guide bar is integrally provided in the cavity 14, and the guide bar is in a round chamfered shape at the cavity opening corresponding to the installation cavity 14, so as to reduce the installation resistance when assembling the mobile control module 8, and the mobile control module 8 can be installed more smoothly; in addition, at least one limiting column 14-2 for the power line to be wound and bent is integrally provided on the outer surface of the switch power board 13 corresponding to the installation cavity 14. The number of limiting columns 14-2 in this embodiment is three and arranged along the length direction of the power line. The power line is "S"-shaped and bypasses the three limiting columns 14-2 in turn, and is connected to the circuit board inside the shell through one end of the power line. Then, the active part of the power line is bent along the limiting column 14-2 and passes through the constraint hole of the shell to be exposed to the outside of the shell for electrical connection with an external power supply. The power line is bent to form a blockage for the external tensile force along the direction of the power line, which can increase the tensile force resistance of the power line and prevent the external tensile force from being directly transmitted to the connection point between the power line and the circuit board in the device, causing the welding point of the power line to fall off.

[0040] In addition, the specific structure of the connection between the plastic end cap 2 and the plastic housing 1 is as follows: the plastic end cap 2 is provided with a protruding foot 2-1 on one side facing the plastic housing 1, and the positioning portion 7 is provided with a slot 7-3 that matches the foot 2-1. The plastic housing 1 is detachably connected to the positioning portion 7 through the foot 2-1 and the slot 7-3. The installation of the plastic end cap 2 is achieved by the snap connection between the foot 2-1 and the slot 7-3. The snap connection structure can also be hidden in the plastic housing 1, ensuring that the external structure is simple and clean.

[0041] The specific structure of the connection between the drawer frame 3 and the plastic shell 1 is as follows: the circumference of the positioning part 7 is provided with a connecting hole 7-2, and the end of the drawer frame 3 is provided with a mounting hole matched with the connecting hole 7-2. One end of the drawer frame 3 is fixedly connected to the positioning part 7 through screws, the connecting hole 7-2, and the mounting hole. The screws screwed in are hidden in the plastic shell 1 and will not be exposed outside the plastic shell 1 to affect the aesthetics of the overall structure.

[0042] An electric control element 16 is also provided on the outer side of the control board 5 corresponding to the installation cavity 14, and the electric control element 16 is electrically connected to the control board 5. A control valve 17 is provided at the power control unit corresponding to the positioning portion 7, and the control valve 17 is connected to the electric control element 16, and the control valve 17 is also exposed on the plastic end cover 2; moreover, the cavity opening of the installation cavity 14 is provided corresponding to the connection window 7-1 of the positioning portion 7.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A driving device for an electric curtain, characterized in that: include An integrally formed plastic shell (1), wherein at least one end of the plastic shell (1) is provided with a plastic end cover (2), and the outer end surface of the plastic end cover (2) is flush with the end surface of the plastic shell (1) or is recessed into the plastic shell (1); A drawer frame (3), the drawer frame (3) being arranged in the plastic housing (1), a drive motor (4) and a control board (5) being mounted on the drawer frame (3), the drive motor (4) being electrically connected to the control board (5); One end of the drawer frame (3) is flush with one end surface of the plastic shell (1) to form an end cover (6), and the other end of the drawer frame (3) extends into the plastic shell (1) and is fixedly connected to the inside of the plastic shell (1); A positioning portion (7) is integrally formed in the plastic shell (1) and can be used to fix and connect the end of the drawer frame (3), and a connecting window (7-1) is opened on the positioning portion (7); The drawer frame (3) is provided with a mobile control module (8), which is inserted from the connection window (7-1) and connected in series with the control panel (5); The positioning portion (7) is provided with a connection hole (7-2) in the circumference thereof, and the end of the drawer frame (3) is provided with a mounting hole column (9) that matches the connection hole (7-2), and one end of the drawer frame (3) is fixedly connected to the positioning portion (7) via screws, the connection hole (7-2), and the mounting hole column (9); A clamping foot (2-1) is protruding from the side of the plastic end cover facing the plastic housing (1), and a clamping groove (7-3) cooperating with the clamping foot (2-1) is provided on the positioning portion, and the plastic end cover (2) is detachably connected to the positioning portion (7) via the clamping foot (2-1) and the clamping groove (7-3); The drawer frame (3) is composed of a front frame body (3-1), a middle frame body (3-2) and a rear frame body (3-3), wherein: The driving motor (4) is supported on the front frame (3-1), and a shock-absorbing sleeve (10) is also sleeved on the driving motor (4); An isolation plate (11) is integrally provided on the middle frame (3-2) along the length direction of the entire middle frame (3-2), the isolation plate (11) is arranged perpendicularly to the middle frame (3-2), and the middle frame (3-2) and the isolation plate (11) are integrally provided with stoppers (12) on both side end surfaces thereof, the control panel (5) is clamped on one side surface of the isolation plate (11) through the stoppers (12), and the isolation plate (11) is provided with a stopper block (11-1) on one side of the control panel (5) and close to the front frame (3-1); a switch power supply board (13) is provided on the other side of the isolation plate (11), the switch power supply board (13) is clamped on the side surface of the isolation plate (11) through the stoppers (12), and the isolation plate (11) is provided with stoppers (11-2) integrally protruding on both ends of one side of the switch power supply board (13); The rear frame (3-3) is integrally provided with a limiting plate (11-2) as one end to form a mounting cavity (14), the mobile control module (8) is inserted into the mounting cavity (14), and a docking window (14-1) is provided on a side of the mounting cavity (14) corresponding to the control board (5), the mobile control module (8) is connected in series with the control board (5) through the docking window (14-1), and at least one limiting column (14-2) for winding and bending a power line is integrally provided on an outer side surface of the mounting cavity (14) corresponding to the switch power board (13).

2. The driving device of an electric curtain according to claim 1, characterized in that: Limiting plates (15) are evenly distributed on the inner side surfaces of the front frame body (3-1) and the middle frame body (3-2); isolation strips (11-3) are evenly distributed on one side surface of the isolation plate (11) corresponding to the control board (5); a guide strip (14-3) is integrally provided in the installation cavity (14), and the guide strip (14-3) is in a rounded chamfered shape at the cavity opening corresponding to the installation cavity (14); in addition, an electric control element (16) is also clamped on the outer side of the installation cavity (14) corresponding to the control board (5), and the electric control element (16) is electrically connected to the control board (5).

3. The driving device of an electric curtain according to claim 2, characterized in that: A control valve (17) is provided at the positioning portion (7) corresponding to the electric control element (16), the control valve (17) being connected to the electric control element (16), and the control valve (17) is also exposed on the plastic end cover (2); in addition, the cavity opening of the installation cavity (14) is provided corresponding to the connection window (7-1) of the positioning portion (7).

4. The driving device for an electric curtain according to claim 3, characterized in that: A communication conductor joint (8-1) is exposed at one end of the mobile control module (8) corresponding to the control board, a corresponding docking joint (5-1) is connected to the control board (5), and the docking joint (5-1) extends into the installation cavity (14) from the docking window (14-1), and when the mobile control module (8) is inserted into the installation cavity (14), the communication conductor joint (8-1) abuts against the docking joint (5-1).

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