Electric curtain drive device

Abstract

The utility model discloses a kind of electric curtain driving devices, including drive box, the drive box includes motor, clutch mechanism, stroke detection device and control circuit board, the motor and clutch mechanism transmission connection;The control circuit board is below motor, the clutch mechanism is above motor, the control circuit board is provided with detection module;The stroke detection device is arranged in the side of motor, the upper portion of the stroke detection device is transmission connection with clutch mechanism, the lower portion of the stroke detection device is set in the induction range of detection module.

Description

Technical Field

[0001] This utility model relates to a power device, and more particularly to an electric curtain drive device. Background Technology

[0002] As people's demands for home life continue to increase, more and more families are starting to install electric curtains, which can be opened or closed by controlling the drive mechanism of the electric curtains.

[0003] Existing motorized curtain drive mechanisms typically include a drive unit and a transmission unit. The drive unit contains a motor, and the transmission unit contains gears and other transmission components. To detect the motor's travel and control the curtain's opening and closing degree, a travel detection device is usually included. Traditional detection methods generally involve placing a grating or uniformly distributed permanent magnets at the output shaft. The detection module is then fabricated as a small circuit board and installed near the grating or permanent magnet disc for detection. It is then connected to a control circuit board at a certain distance using wire soldering or a combination of wires and connectors. Examples include Chinese Patent Application No. 201821961915.9, which discloses a single-motor controlled dual-track motorized curtain, and Chinese Patent Application No. 202323034531.6, which discloses a curtain motor structure suitable for track-type curtains.

[0004] This existing technology has the following problems:

[0005] 1. The wires are very thin and break very easily, affecting the lifespan of the entire machine;

[0006] 2. Due to the limitations of the location and the presence of magnetic beads in the clutch components, magnetic field interference can occur. Usually, only photoelectric detection can be used. If Hall effect detection is required, the diameter of the disk or the height needs to be increased to isolate the magnetic field interference between the magnetic beads and the Hall effect permanent magnet. This usually increases the size significantly and makes it difficult to achieve stable and reliable detection.

[0007] Therefore, further improvements are needed. Utility Model Content

[0008] The first technical problem to be solved by this utility model is to provide an electric curtain drive device that can reduce the size, in order to address the shortcomings of the existing technology.

[0009] The second technical problem to be solved by this utility model is to provide an electric curtain drive device that addresses the shortcomings of the existing technology, reduces costs, and improves the reliability and stability of detection.

[0010] The technical solution adopted by this utility model to solve the first technical problem mentioned above is as follows: an electric curtain drive device, comprising a drive box, the drive box including a motor, a clutch mechanism, a stroke detection device and a control circuit board, wherein the motor and the clutch mechanism are connected in transmission; characterized in that:

[0011] The control circuit board is located below the motor, the clutch mechanism is located above the motor, and the control circuit board is equipped with a detection module;

[0012] The stroke detection device is located on the side of the motor. The upper part of the stroke detection device is connected to the clutch mechanism for transmission, and the lower part of the stroke detection device is located within the sensing range of the detection module.

[0013] The stroke detection device is placed on the side of the motor, which allows it to easily transmit the detection information to the upper clutch mechanism and also to easily cooperate with the lower control circuit board. The layout is reasonable and can reduce the overall size of the drive device.

[0014] The technical solution adopted by this utility model to solve the second technical problem mentioned above is as follows: the stroke detection device includes a first gear that is connected to the clutch mechanism and a rotating wheel driven by the first gear. The rotating wheel includes a second gear and a wheel disk arranged coaxially. The wheel disk is located on the control circuit board and cooperates with the detection module.

[0015] By setting the first gear, the rotation of the output shaft located at the top of the motor is switched to the rotation of the wheel on the lower side. This allows the detection module to be easily set directly on the control circuit board without the need for an additional small separate circuit board, saving costs and eliminating the need for wiring, thus avoiding the risk of wire breakage and greatly increasing the reliability and stability of the detection. Moreover, since the detection is switched to the bottom, it can be directly moved away from the original clutch mechanism in space, thus avoiding the influence of the magnetic field of the magnetic bead inside the clutch, and can be easily compatible with Hall effect sensing and grating photoelectric detection methods.

[0016] According to one aspect of the present invention, the outer diameter of the wheel is larger than that of the second gear, the portion of the wheel that extends radially beyond the second gear forms a grating, and the portion of the wheel that forms the grating is inserted into the detection module of the control circuit board.

[0017] According to another aspect of the present invention, the outer diameter of the wheel is larger than that of the second gear, and permanent magnets are evenly distributed circumferentially on the portion of the wheel that extends radially beyond the second gear. The portion of the wheel with permanent magnets is inserted into the detection module of the control circuit board.

[0018] Preferably, the clutch mechanism includes an input element and an output element, the output element being connected to a first gear, and the second gear meshing with the first gear.

[0019] Preferably, to facilitate the transmission between the output element and the first gear, and to facilitate steering, the output element is provided with a ring of end face teeth, the first gear meshes with the end face teeth, and the rotation axis of the first gear is perpendicular to the output shaft of the motor.

[0020] Furthermore, the drive box also includes a reduction gearbox, which is connected between the output shaft of the motor and the input element of the clutch mechanism.

[0021] Furthermore, to facilitate the installation of the motor, stroke detection device, and control circuit board, the drive box also includes a bracket, the motor is installed inside the bracket, the control circuit board is installed laterally at the bottom of the bracket, and the stroke detection device is rotatably installed on the side of the bracket.

[0022] Furthermore, the motor has a conductive insert at its bottom, and the control circuit board includes a spring-loaded connecting piece. The conductive insert is directly inserted into the spring-loaded connecting piece to achieve electrical connection between the motor and the control circuit board. The motor and control circuit board are also connected via a direct insertion method, eliminating the soldering step, saving processes and space, and avoiding the risk of wire breakage.

[0023] Compared with the prior art, the advantages of this utility model are as follows: the stroke detection device is arranged on the side of the motor, which can not only easily transmit the information required for detection by driving the upper clutch mechanism, but also easily cooperate with the lower control circuit board. The layout is reasonable and can reduce the overall size of the drive device. By setting the first gear, the rotation of the output shaft located at the upper part of the motor is switched to the rotation of the wheel on the lower side. This allows the detection module to be directly set on the control circuit board without the need for an additional small separate circuit board, saving costs and eliminating the need for wires, avoiding the risk of wire breakage, and greatly increasing the reliability and stability of detection. Moreover, since the detection is switched to the lower bottom, it can be directly moved away from the original clutch mechanism in space, thus avoiding the influence of the magnetic field of the magnetic bead inside the clutch. It can be easily compatible with Hall effect sensing detection method and grating photoelectric detection method. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the driving device according to the first embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the drive box of the drive device according to the first embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the drive box of the drive device according to the first embodiment of the present invention (and...). Figure 2 (Different perspectives);

[0027] Figure 4 This is a schematic diagram of the drive box hidden housing and latch of the drive device according to the first embodiment of this utility model;

[0028] Figure 5 for Figure 4 A schematic diagram of the hidden circuit board;

[0029] Figure 6 This is an exploded view of the drive box of the drive device according to the first embodiment of the present utility model;

[0030] Figure 7 This is a schematic diagram of the drive box wheel of the drive device according to the first embodiment of the present invention;

[0031] Figure 8 This is a partial schematic diagram of the drive box of the drive device according to the second embodiment of the present invention. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0034] Example 1

[0035] See Figures 1 to 7An electric curtain drive device includes a drive box 100, a transmission box 200, a latch 300 for locking the drive box and the transmission box 200, and a battery module 400. The drive box 100 includes a motor 1, and the transmission box 200 may include gears or other components that are drively connected to the motor 1. The drive box 100 and the transmission box 200 are locked together by the latch 300. The mechanical and transmission connections between the drive box 100 and the transmission box 200 can all utilize existing technologies, which will not be elaborated further here.

[0036] The drive housing 100 also includes a clutch mechanism 2, a reduction gearbox 3, a first gear 4, a rotating wheel 5, a power circuit board 6, a control circuit board 7, a base 8, a bracket 9, and a housing 11. The bracket 9 includes an integrally formed first part 91 and a second part 92, wherein the first part 91 is formed around the periphery of the second part 92, and the second part 92 is a hollow cylinder. The motor 1 and the reduction gearbox 3 are housed within the second part 92, and the reduction gearbox 3 is connected to the output shaft of the motor 1. The clutch mechanism 2 is connected to the output end of the reduction gearbox 3 and is located above the reduction gearbox 3.

[0037] The power circuit board 6 is mounted longitudinally on the second part 92 of the bracket 9. Here, "longitudinal extension" means that when the drive device is installed, the output shaft of the motor 1 extends longitudinally (that is, extends vertically, usually in the vertical direction), and the power circuit board 6 is arranged in the same direction as the output shaft of the motor 1.

[0038] A bracket 9 is housed inside a housing 11, with an opening at the bottom. A base 8 is positioned at the bottom of the housing 11, sealing the bottom of the housing 11. A control circuit board 7 is mounted laterally on the base 8, meaning its extension direction is perpendicular or nearly perpendicular to the extension direction of the power circuit board 6. The power circuit board 6 is located above the control circuit board 7, and the two can be connected via a direct-plug terminal. The power input for the motor 1 uses a conductive insert 101. The control circuit board 7 includes a spring-loaded connecting piece 72, which has a coiled structure, allowing the conductive insert 101 to be directly inserted into the spring-loaded connecting piece 72 for electrical connection. In this embodiment, the control circuit board 7 is powered by a battery module 400 connected below the drive housing 100.

[0039] The first gear 4 and the rotating wheel 5 constitute a stroke detection device, rotatably mounted on the side of the bracket 9 (motor 1). The first gear 4 is connected to the clutch mechanism 2. In this embodiment, the clutch mechanism 2 includes an input element 21 connected to the reduction gearbox 3 and an output element 22 connected to the transmission box 200. The output element 22 has a ring of end face teeth 221, which meshes with the first gear 4. The rotating wheel 5 is located below the first gear 4 and includes a second gear 51 and a wheel 52 coaxially arranged. The two can be integrally formed. The outer diameter of the wheel 52 is larger than that of the second gear 51, so that a grating 521 is formed by a slit in the radial part of the wheel 52 that extends beyond the second gear 51. The second gear 51 meshes with the first gear 4, thereby transmitting the rotational motion output by the motor 1 to the rotational motion of the rotating wheel 5. The number and size of the first gear 4 can be adjusted as needed.

[0040] The portion of the grating 52 formed by the wheel 52 is inserted into the detection module 73 of the control circuit board 7, placing it within the detection module 73's reaction range. In this embodiment, a photoelectric detection module is used to detect the number of rotations and speed of the motor 1's output shaft on the control circuit board 7, thereby enabling the calculation of the curtain's opening and closing distance and start / stop control.

[0041] Example 2

[0042] See Figure 8 In this embodiment, the difference from the first embodiment is that the portion of the grating 521 formed by the wheel 52 is replaced by a uniformly distributed permanent magnet 522, thereby the detection module 73 on the control circuit board 7 is replaced by a Hall sensor detection module.

Claims

1. An electric curtain drive device, comprising a drive box (100), the drive box (100) comprising a motor (1), a clutch mechanism (2), a stroke detection device and a control circuit board (7), wherein the motor (1) and the clutch mechanism (2) are connected in transmission; characterized in that: The control circuit board (7) is located below the motor (1), the clutch mechanism (2) is located above the motor (1), and the control circuit board (7) is equipped with a detection module (73); The stroke detection device is located on the side of the motor (1), the upper part of the stroke detection device is connected to the clutch mechanism (2) for transmission, and the lower part of the stroke detection device is located within the sensing range of the detection module (73).

2. The motorized window treatment drive apparatus of claim 1, wherein: The stroke detection device includes a first gear (4) that is connected to the clutch mechanism (2) and a rotating wheel (5) driven by the first gear (4). The rotating wheel (5) includes a second gear (51) and a wheel disc (52) arranged coaxially. The wheel disc (52) is located on the control circuit board (7) and cooperates with the detection module (73).

3. The motorized window treatment drive of claim 2, wherein: The outer diameter of the wheel (52) is larger than that of the second gear (51). The portion of the wheel (52) that extends radially beyond the second gear (51) forms a grating (521). The portion of the wheel (52) that forms the grating (521) is inserted into the detection module (73) of the control circuit board (7).

4. The motorized window treatment drive of claim 2, wherein: The outer diameter of the wheel (52) is larger than that of the second gear (51). Permanent magnets (522) are evenly distributed circumferentially on the part of the wheel (52) that extends radially beyond the second gear (51). The part of the wheel (52) with permanent magnets (522) is inserted into the detection module (73) of the control circuit board (7).

5. A motorised window treatment drive arrangement according to any one of claims 2 to 4 wherein: The clutch mechanism (2) includes an input element (21) and an output element (22). The output element (22) is connected to the first gear (4) in a transmission manner, and the second gear (51) meshes with the first gear (4).

6. The motorized window treatment drive apparatus of claim 5, wherein: The output element (22) is provided with a ring of end face teeth (221), the first gear (4) meshes with the end face teeth (221), and the rotation axis of the first gear (4) is perpendicular to the output axis of the motor (1).

7. The motorized window treatment drive apparatus of claim 5, wherein: The drive box (100) also includes a reduction gearbox (3), which is connected between the output shaft of the motor (1) and the input element (21) of the clutch mechanism (2).

8. The motorized window treatment drive apparatus of any one of claims 1-4, wherein: The drive box (100) also includes a bracket (9), the motor (1) is disposed inside the bracket (9), the control circuit board (7) is installed laterally at the bottom of the bracket (9), and the stroke detection device is rotatably disposed on the side of the bracket (9).

9. The motorized window treatment drive apparatus of claim 8, wherein: The bottom of the motor (1) is provided with a conductive insert (101), and the control circuit board (7) includes a spring connecting piece (72). The conductive insert (101) is directly inserted into the spring connecting piece (72) to realize the electrical connection between the motor (1) and the control circuit board (7).

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