Electric curtain driving device

Abstract

The utility model discloses an electric curtain driving device which comprises a driving box which comprises a first box body and a motor arranged in the first box body. The transmission box comprises a second box body; the clutch device comprises a driving part driven by the motor and a driven part capable of being connected with or separated from the driving part, and the driven part is arranged in the second box body; the stroke detection device comprises an inductive probe arranged in the first box body and a magnet arranged in the second box body; the end face of the side, facing the driving box, of the driven piece is sunken in the direction away from the driving box to form a containing groove, and the magnet is arranged in the containing groove. Compared with the prior art, the stroke detection device has the advantages that the driven part is directly used as an installation base of the magnet of the stroke detection device, installation of the magnet and linkage with the driven part can be achieved under the condition that the height of the driven part is not increased, a rotating part does not need to be independently arranged, the overall height of the driving box and the transmission box can be shortened, and the cost is reduced. And miniaturization design is facilitated.

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 box and a transmission box. The drive box houses the motor, and the transmission box houses the gears. A clutch device is installed between the motor and the transmission gears to enable manual operation of the motorized curtain. For example, Chinese Patent Application No. 202322001263.1 discloses a curtain motor device including a motor body and a transmission box. The motor body has a protruding shell, and the power output end of the motor body is located on the protruding shell. The transmission box has a positioning groove, and the power input end of the transmission box is placed in the positioning groove. The protruding shell is detachably fitted into the positioning groove, driving the power input end of the transmission box to the power output end of the motor body. In this type of curtain motor device, the convex-concave fit between the motor body and the transmission box increases the overall height. Furthermore, the presence of the positioning groove in the transmission box results in an excessively small overall height for the gears, requiring a separate traction wheel to engage with the traction belt. This complex structure is not conducive to miniaturization design.

[0004] For example, Chinese Patent Application No. 202021331402.7 discloses a transmission box suitable for electric curtains, including a transmission box housing. Inside the housing is a clutch device for transmission with a motor of the electric curtain. A magnetic field strength detection probe is located inside the motor. A rotating component is located inside the housing, coaxially driven with the clutch device. The rotating component cooperates with the magnetic field strength detection probe inside the motor to form a stroke detection device for detecting the displacement distance of the curtain. In this type of transmission box, the rotating component is independently mounted on the clutch device, resulting in a relatively large overall axial height, which is not conducive to miniaturization design.

[0005] Therefore, further improvements are needed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an electric curtain drive device that reduces the overall height in order to facilitate miniaturization, in order to address the shortcomings of the existing technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: an electric curtain drive device, comprising:

[0008] A drive housing, comprising a first housing and a motor disposed within the first housing;

[0009] A transmission housing, which includes a second housing;

[0010] A clutch mechanism comprising a driving element driven by a motor and a driven element capable of engaging or disengaging from the driving element, the driven element being disposed within a second housing; and

[0011] A travel detection device, comprising a sensing probe disposed within a first housing and a magnet disposed within a second housing; characterized in that:

[0012] The driven member has a recessed end facing away from the drive box, forming a receiving groove, and the magnet is placed in the receiving groove.

[0013] By directly using the driven component as the mounting base for the magnet of the stroke detection device, the magnet can be installed and linked with the driven component without increasing the height of the driven component. There is no need to set up a separate rotating component, which can shorten the overall height of the drive box and transmission box, and facilitate miniaturization design.

[0014] To avoid interference between some components of the clutch device and the magnet, the driven member includes an integrally formed first part and a second part. The first part is gear-shaped, and the second part is formed by extending radially outward from the end of the first part toward the drive housing. The receiving groove is formed in the second part.

[0015] According to one aspect of the present invention, the magnet is annular, and the receiving groove is a matching annular shape.

[0016] According to another aspect of the present invention, the magnet is a magnetic bead and there are multiple of them, and there are multiple receiving slots arranged at intervals along the circumference, with each magnetic bead corresponding to one receiving slot.

[0017] Furthermore, to facilitate the motor driving the driving element of the clutch device, the output end of the motor is provided with a gear ring with internal teeth, and the driving element is at least partially inserted into the gear ring and meshes with it.

[0018] Preferably, a portion of the driving member is located within the second housing, and the portion of the driving member that mates with the gear ring extends out of the second housing.

[0019] According to one aspect of the present invention, in order to facilitate the power supply and control of the motor, the first housing is further provided with a first circuit board for controlling the motor and a second circuit board for connecting to high voltage. The second circuit board is electrically connected to the first circuit board to supply power to the first circuit board. The first housing is further provided with a partition that separates the second circuit board and the first circuit board. By setting the partition, high voltage and low voltage can be isolated, thereby improving safety.

[0020] To facilitate wiring between the first and second circuit boards, the drive box is located below the transmission box, and the partition extends downward from the top of the first box, with the bottom of the partition being higher than the bottom of the first box.

[0021] According to one aspect of the present invention, in order to facilitate the power supply and control of the motor, an installation cavity is formed in the first housing, and a battery box or power supply box is detachably installed in the installation cavity. The first housing is also provided with a first circuit board for controlling the motor, and the first circuit board is electrically connected to the battery box or power supply box.

[0022] Compared with the prior art, the advantages of this utility model are: by directly using the driven part as the mounting base of the magnet of the stroke detection device, the magnet can be installed and linked with the driven part without increasing the height of the driven part. There is no need to set up a separate rotating part, which can shorten the overall height of the drive box and transmission box, which is conducive to miniaturization design. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the electric curtain drive device according to the first embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of the electric curtain drive device according to the first embodiment of this utility model;

[0025] Figure 3 This is an exploded view of the electric curtain drive device according to the first embodiment of the present invention;

[0026] Figure 4 This is an exploded structural diagram of the electric curtain drive device according to the first embodiment of the present invention (and...). Figure 3 (Different perspectives);

[0027] Figure 5 This is a schematic diagram of the clutch device and magnet of the electric curtain drive device according to the first embodiment of this utility model;

[0028] Figure 6 for Figure 5 A schematic diagram of the decomposed structure;

[0029] Figure 7 This is a schematic diagram of the hidden transmission box and part of the drive box of the electric curtain drive device according to the first embodiment of this utility model;

[0030] Figure 8 This is a cross-sectional view of the drive box of the electric curtain drive device according to the second embodiment of the present utility model;

[0031] Figure 9This is an exploded structural diagram (battery box) of the drive box of the electric curtain drive device according to the second embodiment of the present invention;

[0032] Figure 10 This is an exploded structural diagram (power supply box) of the drive box of the electric curtain drive device according to the first embodiment of this utility model. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] Example 1

[0036] See Figures 1 to 7 An electric curtain drive device includes a drive box 100, a transmission box 200, a clutch device, and a stroke detection device. The drive box 100 includes a first housing 11 and a motor 12 disposed within the first housing 11. The transmission box 200 includes a second housing 21. The first housing 11 and the second housing 21 are connected and fixed, preferably using a detachable connection, such as a rotational snap-fit.

[0037] The clutch device includes a driving member 31 and a driven member 32. The driving member 31 is driven by a motor 12. In this embodiment, the output end of the motor 12 is provided with a gear ring 13, which has internal teeth. The driving member 31 is gear-shaped and is at least partially inserted into the gear ring 13 and meshes with it, so that the output end of the motor 12 can drive the driving member 31 to rotate. The driven member 32 is coaxially arranged with the driving member 31 and can engage or disengage with the driving member 31. In this embodiment, the driven member 32 is also in the form of a gear and can cooperate with a traction belt (such as a belt) to drive the curtain. The part of the driving member 31 that engages with the gear ring 13 extends out of the second housing 21, while the remaining part of the driving member 31 passes into the second housing 21. The driven member 32 is completely disposed within the second housing 21. The engagement and disengagement methods of the driving member 31 and the driven member 32 are the same as in the prior art.

[0038] The stroke detection device includes a sensing probe 41 and a magnet 42. The sensing probe 41 is disposed inside the first housing 11, while the magnet 42 is disposed inside the second housing 21. The magnet 42 rotates in conjunction with the driven member 32. The sensing probe 41 is preferably a Hall element. The magnet 42 and the sensing probe 41 are positioned close to each other, with the magnet 42 located within the sensing range of the sensing probe 41. The Hall element can sense a periodically changing magnetic field and convert the periodically changing magnetic field strength signal into a periodically changing electrical signal, thereby recording motion information such as the number of rotations and rotation angle of the driven member 32 during rotation.

[0039] To achieve linkage between the magnet 42 and the driven member 32, in this embodiment, the driven member 32 is recessed on one end facing away from the drive box 100 to form a receiving groove 323. The magnet 42 is placed in the receiving groove 323, and the driven member 32 is directly used as the mounting base for the magnet 42. The axial height of the driven member 32 can be kept the same as the height of the driven member in the applicant's prior application mentioned in the background art. Therefore, it is no longer necessary to set up a separate rotating member, which can shorten the overall height of the drive box 100 and the transmission box 200, which is conducive to miniaturization design.

[0040] Magnet 42 can be like Figure 5 and Figure 6 The shape shown is annular, so the receiving groove 323 is a matching annular shape. Alternatively, the magnet 42 can also be in the form of magnetic beads, and there can be multiple of them. In this case, the receiving groove 323 is in the form of grooves arranged circumferentially, with each magnetic bead corresponding to one receiving groove 323.

[0041] Since the driving member 31 extends into the driven member 32, and other components of the clutch device may also need to be installed in the driven member 32, in order to facilitate installation and avoid interference between components, the driven member 32 includes an integrally formed first part 321 and a second part 322. The first part 321 is gear-shaped as described above, and the second part 322 is coaxial with the first part 321 and is formed by extending radially outward from the end of the first part 321 toward the drive housing 100. The aforementioned receiving groove 323 is formed in the second part 322.

[0042] The drive box 100 includes a first circuit board 14 and a second circuit board 15. In the installed state of the drive device, the drive box 100 is located below the transmission box 200. The output shaft of the motor 12 extends vertically, while the second circuit board 15 and the first circuit board 14 are arranged laterally at intervals within the first housing 11. A partition 16 is provided within the first housing 11, extending downwards from the top of the first housing 11 to separate the second circuit board 15 and the first circuit board 14. The second circuit board 15, the first circuit board 14, and the motor 12 are arranged sequentially, meaning the first circuit board 14 is closer to the motor 12 than the second circuit board 15. The second circuit board 15 is a power module used to connect to high-voltage power and supply power to the first circuit board 14, while the first circuit board 14 is used to control the motor 12 (low-voltage). This separation of the high-voltage and low-voltage circuit boards enhances safety. The bottom of the partition 16 is higher than the bottom of the first housing 11, allowing the wires connecting the second circuit board 15 and the first circuit board 14 to run underneath the partition 16. The sensing probe 41 may be disposed on and electrically connected to the first circuit board 14, and preferably located on the top of the first circuit board 14 to be close to the magnet 42. In addition, the sensing probe 41 is located on the side away from the second circuit board 15.

[0043] Example 2

[0044] See Figures 8-10 In this embodiment, the difference from Embodiment 1 is that a mounting cavity 17 is formed within the first housing 11, extending through the bottom of the first housing 11. The mounting cavity 17 is used to mount a battery box 18 or a power supply box 18'. The battery box 18 includes a rechargeable lithium battery 181, and the power supply box 18' is a power adapter used to connect to AC power, thereby converting AC power to DC power. The battery box 18 and the power supply box 18' are detachably installed into the mounting cavity 17, and either the battery box 18 or the power supply box 18' can be selected as needed.

[0045] In this embodiment, only the first circuit board 14 needs to be provided and electrically connected to the battery box 18 or the power supply box 18'.

Claims

1. An electric curtain drive device, comprising: The drive housing (100) includes a first housing (11) and a motor (12) disposed within the first housing (11); Transmission housing (200), which includes a second housing (21); A clutch device comprising a driving element (31) driven by a motor (12) and a driven element (32) capable of engaging or disengaging from the driving element (31), the driven element (32) being disposed within a second housing (21); and The travel detection device includes a sensing probe (41) disposed in a first housing (11) and a magnet (42) disposed in a second housing (21); characterized in that: The driven member (32) has a recessed end facing away from the drive box (100) on one side, forming a receiving groove (323), and the magnet (42) is placed in the receiving groove (323).

2. The electric curtain drive device according to claim 1, characterized in that: The follower (32) includes an integrally formed first part (321) and a second part (322), the first part (321) being gear-shaped, the second part (322) being formed by extending radially outward from the end of the first part (321) toward the drive housing (100), and the receiving groove (323) being formed in the second part (322).

3. The electric curtain drive device according to claim 1 or 2, characterized in that: The magnet (42) is annular, and the receiving groove (323) is a matching annular shape.

4. The electric curtain drive device according to claim 1 or 2, characterized in that: The magnet (42) is a magnetic bead and there are multiple magnets, and there are multiple receiving slots (323) and they are arranged at intervals along the circumference, with each magnetic bead corresponding to one receiving slot (323).

5. The electric curtain drive device according to claim 1 or 2, characterized in that: The output end of the motor (12) is provided with a toothed ring (13) with internal teeth, and the driving member (31) is at least partially inserted into the toothed ring (13) and meshes with it.

6. The electric curtain drive device according to claim 5, characterized in that: Part of the driving member (31) is located inside the second housing (21), and the part of the driving member (31) that mates with the gear ring (13) extends out of the second housing (21).

7. The electric curtain drive device according to claim 1 or 2, characterized in that: The first housing (11) is also provided with a first circuit board (14) for controlling the motor (12) and a second circuit board (15) for connecting to high voltage. The second circuit board (15) is electrically connected to the first circuit board (14) to supply power to the first circuit board (14). The first housing (11) is also provided with a partition (16) that separates the second circuit board (15) and the first circuit board (14).

8. The electric curtain drive device according to claim 7, characterized in that: The drive box (100) is located below the transmission box (200), the partition (16) extends downward from the top of the first box (11), and the bottom of the partition (16) is higher than the bottom of the first box (11).

9. The electric curtain drive device according to claim 1 or 2, characterized in that: The first housing (11) has an installation cavity (17) formed inside, and a battery box (18) or a power supply box (18') is detachably installed inside the installation cavity (17). The first housing (11) is also provided with a first circuit board (14) for controlling the motor (12), and the first circuit board (14) is electrically connected to the battery box (18) or the power supply box (18').

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