An electric window curtain driving device

Abstract

The utility model discloses a kind of electric curtain driving devices, comprising: drive box, it includes end cap and at least part extends to the driving part of end cap above;And transmission box, it is installed on drive box, it includes transmission part, the transmission part can be matched with driving part up and down concave-convex and realize synchronous rotation;The drive box further includes the elastic member of driving part keeps moving upward tendency.

Description

Technical Field

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

[0002] Motorized curtains are widely used in hotel rooms and various rooms in homes. They are electrically controlled to open and close, allowing users to operate them via wired or wireless means, making them very convenient and intelligent.

[0003] Existing motorized curtain drive devices, such as the motorized curtain drive module disclosed in Chinese Patent Application No. 202421225342.9, include an active box and a power box. The power box is located at the bottom of the active box. The power box contains a drive motor and a gear reducer. An active pulley is rotatably connected in the active box. The output end of the drive motor is driven and connected to the input end of the gear reducer. The input end of the gear reducer is driven and connected to the active pulley through a transmission assembly. The transmission assembly includes a first transmission block and a second transmission block.

[0004] In the aforementioned existing drive module, the first and second transmission blocks are connected and rotate synchronously through a convex-concave fit. However, this structure requires alignment for installation and cannot be directly observed, making installation inconvenient. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing an electric curtain drive device, in which the transmission connection between the drive box and the transmission box can be automatically aligned, facilitating installation.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: an electric curtain drive device, comprising:

[0007] A drive housing, comprising an end cover and a drive portion extending at least partially over the end cover; and

[0008] A transmission box, mounted on a drive box, includes a transmission part that can engage with the drive part in a convex-concave-convex fit to achieve synchronous rotation.

[0009] Its features are:

[0010] The drive housing also includes an elastic element that causes the drive unit to maintain an upward movement trend.

[0011] By incorporating elastic components, if the drive unit and transmission unit are not properly assembled during installation, the transmission unit will press the drive unit downwards. When the motor starts, the drive unit rotates at a certain angle, aligning the concave and convex positions of the transmission unit and the drive unit. The drive unit is no longer under downward pressure, and under the force of the elastic components, it will push the drive unit upwards, thus automatically engaging with the transmission unit to achieve power output, greatly reducing the requirements for installation.

[0012] Furthermore, to facilitate the installation of the elastic element, the drive box also includes a connecting seat, the upper end of the elastic element abuts against the drive unit, and the lower end of the elastic element abuts against the connecting seat.

[0013] Furthermore, to limit the position of the elastic element and prevent its lateral movement, the connecting seat includes a connecting cavity with an open upper end and a closed lower end. The driving part includes a first connecting part and a second connecting part connected to the transmission part. A receiving cavity is formed in the first connecting part, and the receiving cavity communicates with the outside through the lower opening of the first connecting part. A portion of the elastic element is inserted into the receiving cavity, the upper end of the elastic element abuts against the inner wall surface of the first connecting part corresponding to the upper end of the receiving cavity, the portion of the elastic element exposed in the receiving cavity is inserted into the connecting cavity of the connecting seat, and the lower end of the elastic element abuts against the inner wall surface of the connecting seat corresponding to the lower end of the connecting cavity.

[0014] Furthermore, the connecting seat is driven to rotate by a motor in the drive box, and a first protrusion is formed on the wall of the connecting cavity. The first protrusion extends in a direction parallel to the axial direction of the motor. The cross-section of the connecting cavity is circular, and there are multiple first protrusions arranged at intervals along the circumference of the connecting cavity.

[0015] The outer periphery of the first connecting portion has a second protrusion, which is multiple and spaced apart along the circumferential direction of the first connecting portion. The second protrusion extends in the same direction as the first protrusion. Each first protrusion can be inserted between two adjacent second protrusions, and each second protrusion can be inserted between two adjacent first protrusions, so that the connecting seat can drive the driving part to rotate around the motor axis. Thus, the connecting seat and the driving part rotate synchronously, preventing any possible twisting of the elastic element.

[0016] Furthermore, to prevent the drive unit from detaching upward from the end cover, the drive unit also includes a third connecting part extending downward from the lower end of the second connecting part, the diameter of the cross-section of the third connecting part being larger than that of the second connecting part;

[0017] The end cap includes a cap body with an opening at the lower end. A first limiting wall and a second limiting wall are formed on the upper end surface of the cap body. The first limiting wall extends in the vertical direction, and the second limiting wall is formed by extending radially inward from the upper end of the first limiting wall. The third connecting part of the driving part is disposed inside the first limiting wall. The upper end of the third connecting part is located below the lower end surface of the second limiting wall, and the second connecting part passes through the inner periphery of the second limiting wall and protrudes from the end cap.

[0018] To avoid friction between the end cap and the drive unit, there is a gap between the upper end of the third connecting part and the second limiting wall.

[0019] Preferably, the driving part includes a second connecting part connected to the transmission part, the second connecting part having two first connecting protrusions arranged at intervals in its circumferential direction, and a first connecting notch formed between the first connecting protrusions;

[0020] The transmission part includes a fourth connecting part, which has two second connecting protrusions arranged at intervals in its circumferential direction. A second connecting recess is formed between the second connecting protrusions. The second connecting protrusions of the transmission part can be engaged with the first connecting recess of the driving part, and the first connecting protrusion of the driving part can be engaged with the second connecting recess of the transmission part, thereby achieving a concave-convex fit between the driving part and the transmission part.

[0021] Compared with the prior art, the advantages of this utility model are as follows: by setting an elastic element, if the drive part and the transmission part are not assembled in place during the installation process, the transmission part will press the drive part downward. When the motor starts, the drive part rotates at a certain angle, so that the concave and convex positions of the transmission part and the drive part are aligned. The drive part is no longer under downward pressure. Under the action of the elastic element, the drive part will be pushed upward, thereby automatically cooperating and connecting with the transmission part to realize the output of power, which greatly reduces the installation requirements. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the driving device according to an embodiment of the present utility model;

[0023] Figure 2 This is a cross-sectional view of the driving device according to an embodiment of the present utility model;

[0024] Figure 3 for Figure 2 A magnified schematic diagram of part I;

[0025] Figure 4 This is an exploded structural diagram of the drive unit, transmission unit, elastic element, and connecting seat of the drive device according to an embodiment of the present utility model;

[0026] Figure 5This is an exploded structural diagram of the end cover, driving part, elastic element and connecting seat of the driving device according to an embodiment of the present utility model.

[0027] Figure 6 This is a schematic diagram of the end cover of the drive box of the drive device according to an embodiment of the present utility model. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] See Figures 1-6 An 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.

[0031] The drive housing 100 includes a first housing 101, which houses a motor (not fully shown, but similar to existing technology), and a battery module 400 for powering the motor. The first housing 101 is a hollow housing with openings at both the top and bottom, and an end cap 102 is provided at its upper end. The first housing 101 and the end cap 102 can be separate or integrated. A connecting seat 103 is provided inside the end cap 102, and the lower end of the connecting seat 103 can partially extend out of the end cap 102. The connecting seat 103 is used for transmission connection with the motor, so that it can be driven by the motor to rotate around the motor axis. The connecting seat 103 and the motor can be directly connected, or connected by a reduction gearbox, or connected by a clutch device and a reduction gearbox. The position of the connecting seat 103 in the vertical direction (i.e., the axial direction of the motor) is fixed. For example, a support component can be provided below the connecting seat 104, or it can be restricted by the output end of the motor, reduction gearbox, or clutch device. The connection method and the vertical position fixing method are existing technologies and will not be described in detail here. The battery module 400 mentioned above is installed at the bottom of the first housing 101.

[0032] The connecting seat 103 includes a connecting cavity 1031 that is open at the top and closed at the bottom. A first protrusion 1032 is formed on the wall of the connecting cavity 1031. The first protrusion 1032 extends in a direction parallel to the axial direction of the motor (vertical in the installed state). The cross-section of the connecting cavity 1031 is circular, and there are multiple first protrusions 1032 arranged at intervals along the circumference of the connecting cavity 1031.

[0033] The drive housing 100 also includes a drive unit 104, which includes a first connecting portion 1041 and a second connecting portion 1042. The first connecting portion 1041 is a cylindrical body with an open lower end, and a receiving cavity 10411 is formed therein, which communicates with the outside through the lower opening. Multiple second protrusions 1043 are formed on the outer periphery of the first connecting portion 1041, and are arranged at intervals along the circumference of the first connecting portion 1041. The extension direction of the second protrusions 1043 is consistent with that of the first protrusions 1032. Thus, when the connecting seat 103 and the drive unit 104 are connected, the first connecting portion 1041 is at least partially inserted into the connecting cavity 1031 of the connecting portion 103, each first protrusion 1032 is inserted between two adjacent second protrusions 1043, and each second protrusion 1043 is inserted between two adjacent first protrusions 1032, so that the connecting seat 103 can drive the drive unit 104 to rotate around the motor axis. The second connecting portion 1042 is located above the first connecting portion 1041, and has two first connecting protrusions 10421 arranged at intervals in its circumferential direction, with a first connecting recess 10422 formed between the first connecting protrusions 10421.

[0034] The drive unit 104 also includes a third connecting portion 1044 extending downward from the lower end of the second connecting portion 1042. The third connecting portion 1044 is cylindrical with an open lower end, and its cross-sectional diameter is larger than that of the second connecting portion 1042, thereby forming a step at the connection between the two connecting portions. The third connecting portion 1044 is located on the outer periphery of a portion of the first connecting portion 1041.

[0035] The end cap 102 includes a cap body 1021 with an opening at the lower end. A fifth connecting portion 1022 protruding upwards from the upper end surface of the cap body 1021 is formed therein. A first limiting wall 1023 and a second limiting wall 1024 are also formed above the upper end surface of the fifth connecting portion 1022. The first limiting wall 1023 extends upwards from the upper end surface of the fifth connecting portion 1022 and has an annular cross-section. The second limiting wall 1024 extends radially inwards from the upper end of the first limiting wall 1023. A third connecting portion 1044 of the drive unit 104 is disposed inside the first limiting wall 1023, with a small gap between them, just enough for the drive unit 104 to rotate. The upper end of the third connecting portion 1044 is located below the lower end surface of the second limiting wall 1024, with a gap 1025 between them to prevent friction between the drive unit 104 and the end cap 102. Alternatively, the gap 1025 may be absent, but the contact surfaces of both need to be coated with lubricant. The second connecting portion 1042 passes through the inner periphery of the second limiting wall 1024 and protrudes from the end cap 102.

[0036] The drive housing 100 also includes an elastic element 105, preferably a spring, which is partially located within the drive unit 104 and partially within the connecting seat 103, causing the drive unit 104 to maintain an upward tendency. The first limiting wall 1023 and the second limiting wall 1024 limit the rotational space of the drive unit 104 and prevent the drive unit 104 from disengaging from the connecting seat 103.

[0037] A portion of the elastic member 105 can be inserted into the receiving cavity 10411 of the first connecting portion 1041 of the drive portion 104, and its upper end can abut against the inner wall surface of the upper end of the first connecting portion 1041 corresponding to the receiving cavity 10411. The size of the receiving cavity 10411 is adapted to the elastic member 105 to prevent the elastic member 105 from sliding laterally. The portion of the elastic member 105 protruding from the receiving cavity 10411 can be inserted into the connecting cavity 1031 of the connecting seat 103, and its lower end abuts against the inner wall surface of the lower end of the connecting seat 103 corresponding to the connecting cavity 1031.

[0038] The transmission box 200 includes a second housing 201 and a transmission part 202, which is typically a pulley used to output power by winding a belt around the electric curtain. The transmission part 202 includes a fourth connecting part 2021, which has two second connecting protrusions 20211 arranged at intervals in its circumferential direction, and a second connecting recess 20212 is formed between the second connecting protrusions 20211.

[0039] When the drive box 100 and the transmission box 200 are installed, the connection method of the fifth connecting part 1022 of the first box 101 and the second box 201 is the prior art. At the same time, the second connecting protrusion 2021 of the transmission part 202 is engaged with the first connecting recess 10422 of the drive part 104, and the first connecting protrusion 10421 of the drive part 104 is engaged with the second connecting recess 20212 of the transmission part 202. Thus, the drive part 104 and the transmission part 202 are engaged with each other to realize the transmission connection.

[0040] If the components are not properly assembled during installation (e.g., the connecting protrusions of the drive unit 104 and the transmission unit 202 abut against each other), the transmission unit 202 will press the drive unit 104 downwards. Subsequently, when the motor starts, the drive unit 104 rotates a certain angle (during which the transmission unit 202 will not rotate due to the incomplete assembly), aligning the second connecting protrusion 2021 of the transmission unit 202 with the first connecting recess 10422 of the drive unit 104, and the first connecting protrusion 10421 of the drive unit 104 with the second connecting recess 20212 of the transmission unit 202. The drive unit 104 is no longer under downward pressure and, under the force of the elastic element 105, will be lifted upwards, automatically engaging with the transmission unit 202 to achieve power output.

Claims

1. An electric curtain drive device, comprising: A drive housing (100) includes an end cover (102) and a drive section (104) that extends at least partially over the end cover (102); as well as The transmission box (200) is mounted on the drive box (100) and includes a transmission part (202). The transmission part (202) can be engaged with the drive part (104) to achieve synchronous rotation. Its features are: The drive box (100) also includes an elastic element (105) that causes the drive unit (104) to maintain an upward moving trend.

2. The electric curtain drive device according to claim 1, characterized in that: The drive box (100) also includes a connecting seat (103), the upper end of the elastic member (105) abuts against the drive part (104), and the lower end of the elastic member (105) abuts against the connecting seat (103).

3. The electric curtain drive device according to claim 2, characterized in that: The connecting seat (103) includes a connecting cavity (1031) that is open at the upper end and closed at the lower end. The driving part (104) includes a first connecting part (1041) and a second connecting part (1042) connected to the transmission part (202). A receiving cavity (10411) is formed in the first connecting part (1041), and the receiving cavity (10411) communicates with the outside through the lower opening of the first connecting part (1041). The elastic member (105) is partially inserted into... The elastic element (105) is inserted into the receiving cavity (10411). The upper end of the elastic element (105) abuts against the inner wall surface of the first connecting part (1041) corresponding to the upper end of the receiving cavity (10411). The part of the elastic element (105) exposed in the receiving cavity (10411) is inserted into the connecting cavity (1031) of the connecting seat (103). The lower end of the elastic element (105) abuts against the inner wall surface of the connecting seat (103) corresponding to the lower end of the connecting cavity (1031).

4. The electric curtain drive device according to claim 3, characterized in that: The connecting seat (103) is driven to rotate by a motor in the drive box (100). The connecting seat (103) has a first protrusion (1032) formed on the wall of the connecting cavity (1031). The first protrusion (1032) extends in a direction parallel to the axial direction of the motor. The connecting cavity (1031) has a circular cross-section. There are multiple first protrusions (1032) and they are arranged at intervals along the circumference of the connecting cavity (1031). The first connecting portion (1041) has a second protrusion (1043) formed on its outer periphery. There are multiple second protrusions (1043) and they are arranged at intervals along the circumference of the first connecting portion (1041). The second protrusions (1043) extend in the same direction as the first protrusions (1032). Each first protrusion (1032) can be inserted between two adjacent second protrusions (1043), and each second protrusion (1043) can be inserted between two adjacent first protrusions (1032), so that the connecting seat (103) can drive the driving part (104) to rotate around the motor axis.

5. The electric curtain drive device according to claim 3, characterized in that: The drive unit (104) further includes a third connecting part (1044) extending downward from the lower end of the second connecting part (1042), wherein the diameter of the cross-section of the third connecting part (1044) is larger than that of the second connecting part (1042). The end cap (102) includes a cap body (1021) with an opening at the lower end. A first limiting wall (1023) and a second limiting wall (1024) are formed on the upper end surface of the cap body (1021). The first limiting wall (1023) extends in the vertical direction, and the second limiting wall (1024) is formed by extending radially inward from the upper end of the first limiting wall (1023). The third connecting part (1044) of the driving part (104) is disposed inside the first limiting wall (1023). The upper end of the third connecting part (1044) is located below the lower end surface of the second limiting wall (1024), and the second connecting part (1042) passes through the inner periphery of the second limiting wall (1024) and protrudes from the end cap (102).

6. The electric curtain drive device according to claim 5, characterized in that: There is a gap (1025) between the upper end of the third connecting part (1044) and the second limiting wall (1024).

7. The electric curtain drive device according to claim 1, characterized in that: The drive unit (104) includes a second connecting part (1042) connected to the transmission unit (202). The second connecting part (1042) has two first connecting protrusions (10421) arranged at intervals in its circumferential direction, and a first connecting notch (10422) is formed between the first connecting protrusions (10421). The transmission part (202) includes a fourth connecting part (2021), which has two second connecting protrusions (20211) arranged at intervals in its circumferential direction. A second connecting recess (20212) is formed between the second connecting protrusions (20211). The second connecting protrusions (20211) of the transmission part (202) can be engaged with the first connecting recess (10422) of the drive part (104), and the first connecting protrusions (10421) of the drive part (104) can be engaged with the second connecting recess (20212) of the transmission part (202). Thus, the drive part (104) and the transmission part (202) are in a concave-convex fit.

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