Curtain motor driving device and electric curtain

Abstract

The utility model relates to a curtain motor driving device and an electric curtain, and the curtain motor driving device comprises a housing, an installation support which is connected with the housing in a sliding manner, a power driving assembly which is installed on the installation support, and a linear driving assembly which is connected with the installation support. The linear driving assembly drives the mounting support to linearly slide along the machine shell, and the power driving assembly moves along with the mounting support to change the power output position. The power driving assembly serves as a power output part of the curtain motor driving device, a single-motor output driving force structure is achieved, the power output effect is improved, and the occupied space volume is reduced. The linear driving assembly is connected with the mounting support to drive the power driving assembly to move linearly, so that the connecting position of an output shaft of the power driving assembly is adjusted, and power switching output is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of light shielding, in particular to an electric curtain, and more particularly to a curtain motor driving device and an electric curtain. Background Art

[0002] An electric curtain is provided with a track device, a motor driving device and a transmission box device. The motor driving device drives the track device through the transmission box device to realize opening / closing or dimming control. When the electric curtain needs to realize the opening / closing function and the dimming function, two motors need to be powered to be respectively used as the power sources for the opening / closing function and the dimming function.

[0003] However, for the motor driving device controlled by two motors, the two motors need to be arranged side by side in the spatial layout, which has the technical problems of large occupied space structure, complex power transmission and supporting structure, so improvement is needed. Summary of the Utility Model

[0004] To overcome the problems existing in the related art, an embodiment of the utility model provides a curtain motor driving device and an electric curtain to solve the technical problems of large occupied space structure, complex power transmission and supporting structure.

[0005] According to the first aspect of the embodiment of the utility model, a curtain motor driving device is provided, which includes a machine shell, a mounting bracket slidably connected to the machine shell, a power driving component mounted on the mounting bracket, and a linear driving component connected to the mounting bracket. The linear driving component drives the mounting bracket to linearly slide along the machine shell, and the power driving component changes the power output position along with the movement of the mounting bracket.

[0006] In one embodiment, the linear driving component is helically connected to the mounting bracket.

[0007] In one embodiment, the linear driving component includes a switching motor fixed to the machine shell and a threaded sleeve connected to the output shaft of the switching motor, and the threaded sleeve is helically connected to the mounting bracket.

[0008] In one embodiment, the threaded sleeve is provided with a receiving space, and at least part of the switching motor extends into the receiving space and is fixedly connected to the threaded sleeve.

[0009] In one embodiment, the threaded sleeve includes a threaded portion and a flange flange protruding from one end of the threaded portion. The machine shell includes an assembly bracket for fixing the switching motor. The assembly bracket is provided with a movable groove, and the flange flange is movably defined in the movable groove, and the threaded portion passes through the assembly bracket.

[0010] In one embodiment, the curtain motor driving device further includes a detection assembly, the detection assembly includes a trigger unit and a sensing unit, the sensing unit is installed on the housing, the trigger unit is installed on the mounting bracket, the trigger unit moves synchronously with the mounting bracket, and the sensing unit is located on the moving path of the trigger unit.

[0011] In one embodiment, the sensing unit includes a first detection member and a second detection member that are spaced apart, and the trigger unit moves between the first detection member and the second detection member.

[0012] In one embodiment, the trigger unit and the mounting bracket are detachably connected; alternatively, the trigger unit and the mounting bracket are of an integral structure.

[0013] In one embodiment, the mounting bracket includes a mounting portion, a driving portion, and a connecting portion connecting the mounting portion and the driving portion. The mounting portion is provided with a mounting cavity and a sliding portion on the outer peripheral wall. The sliding portion is slidably connected to the housing. The power driving assembly is installed on the mounting portion and at least partially located in the mounting cavity. The linear driving assembly is helically connected to the driving portion.

[0014] A second aspect of the present utility model also discloses an electric curtain, including the curtain motor driving device as described above. The electric curtain further includes a guide rail assembly and a transmission box assembly. The curtain motor driving device is telescopically and switchably drivingly connected to the transmission box assembly.

[0015] The technical solutions provided by the embodiments of the present utility model may include the following beneficial effects: The power driving assembly serves as the power output part of the curtain motor driving device, realizing a single-motor output driving force structure, improving the power output effect and reducing the occupied space volume. The linear driving assembly is connected to the mounting bracket to drive the power driving assembly to move linearly, thereby adjusting the connection position of the output shaft of the power driving assembly and realizing the switching output of power. The linear driving assembly requires a small occupied space, can flexibly adjust the internal structure of the housing, and optimizes the space utilization rate.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present utility model, and are used together with the specification to explain the principles of the present utility model.

[0018] Figure 1 It is a schematic structural diagram of a curtain motor driving device shown according to an exemplary embodiment.

[0019] Figure 2 Exploded structural schematic diagram of a curtain motor driving device shown according to an exemplary embodiment.

[0020] Figure 3 Structural schematic diagram of a curtain motor driving device with a hidden housing shown according to an exemplary embodiment.

[0021] Figure 4 Exploded structural schematic diagram of a mounting bracket, a power driving assembly, and a linear driving assembly shown according to an exemplary embodiment.

[0022] Figure 5 Partial enlarged sectional view of the connection part between the linear driving assembly and the mounting bracket shown according to an exemplary embodiment.

[0023] Figure 6 Structural schematic diagram of the linear driving assembly assembled to the assembly bracket shown according to an exemplary embodiment.

[0024] Figure 7 Structural schematic diagram of an electric curtain shown according to an exemplary embodiment.

[0025] In the figure, there are a casing 10; a mounting bracket 11; a mounting part 111; a driving part 112; a connecting part 113; a connecting rib 1131; a sliding part 114; a threaded hole 115; an assembly bracket 12; a movable slot 121; an assembly hole 122; a housing 13; a front end cover 14; a guiding part 141; a power driving assembly 20; a linear driving assembly 30; a switching motor 31; a threaded part 311; a flange flange 312; a storage space 313; a threaded sleeve 32; a detection assembly 40; a trigger unit 41; an induction unit 42; a first detection piece 421; a second detection piece 422; a curtain motor driving device 100; a transmission box assembly 200; a guide rail assembly 300. Detailed implementation manners

[0026] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams rather than physical diagrams, and should not be construed as a limitation of this patent; for better illustrating the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, such orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] In the description of the present utility model, unless otherwise clearly specified and defined, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] As Figures 1 to 3 shown, the present utility model provides a curtain motor driving device 100. The curtain motor driving device 100 includes a housing 10, a mounting bracket 11 slidably connected to the housing 10, a power driving component 20 mounted on the mounting bracket 11, and a linear driving component 30 connected to the mounting bracket 11. The linear driving component 30 drives the mounting bracket 11 to slide linearly along the housing 10, and the power driving component 20 changes the power output position as the mounting bracket 11 moves.

[0030] The power driving component 20 is mounted on the mounting bracket 11, and the two are detachably connected to facilitate adjusting the mounting position and the output position of the power driving component 20. The housing 10 is a hollow shell structure, and the power driving component 20 and the mounting bracket 11 are integrally mounted to the housing 10. Among them, the mounting bracket 11 is located inside the housing 10 and is slidably connected to the housing 10 to form a linear guiding slide, and the power driving component 20 switches the working position during this sliding process.

[0031] The linear drive assembly 30 is connected to the mounting bracket 11 to drive the mounting bracket 11 to move along the housing 10. Optionally, the linear drive assembly 30 can be driven by a gear-rack structure to achieve linear movement. Optionally, the linear drive assembly 30 can adopt a screw-nut mechanism to drive for linear movement. Optionally, the linear drive assembly 30 can be driven by a linear motor to achieve linear movement. Optionally, the linear drive assembly 30 can adopt a cam mechanism to cooperate with a slide bar sliding in the housing 10 for linear movement drive to achieve linear movement.

[0032] In one embodiment, the linear drive assembly 30 is helically connected to the mounting bracket 11. The linear drive assembly 30 rotates to drive the mounting bracket 11 to move linearly, and moreover, the moving distance can be finely adjusted according to the screw pitch, with high moving precision and can be stopped and locked in time to avoid reverse offset.

[0033] Preferably, the linear drive assembly 30 includes a switching motor 31 fixed to the housing 10 and a threaded sleeve 32 connected to the output shaft of the switching motor 31. The threaded sleeve 32 is helically connected to the mounting bracket 11. The switching motor 31 drives the threaded sleeve 32 to rotate forward or backward. The mounting bracket 11 linearly reciprocates along the housing 10 under the driving of the helical force of the threaded sleeve 32, so as to achieve different moving distances and moving direction changes. The switching motor 31 can be configured as a small motor to reduce the installation space and meet the driving force of the threaded sleeve 32.

[0034] Further, the threaded sleeve 32 is provided with a receiving space 313, and at least part of the switching motor 31 extends into the receiving space 313 and is fixedly connected to the threaded sleeve 32. The receiving space 313 is a recessed space formed by recessing from one end of the threaded sleeve 32. The switching motor 31 enters the threaded sleeve 32 along the receiving space 313 and is connected to the end wall of the receiving space 313. The threaded sleeve 32 and the switching motor 31 share an axial installation space, reducing the overall installation space. The threaded sleeve 32 is arranged around the outer peripheral wall of the switching motor 31, and an air circulation gap is formed between the threaded sleeve 32 and the surface of the switching motor 31 to keep the air flow smooth.

[0035] In a specific embodiment, the threaded sleeve 32 includes a threaded portion 311 and a flange flange 312 protruding from one end of the threaded portion 311. The outer contour dimension of the flange flange 312 is larger than the outer contour dimension of the threaded portion 311. The threaded portion 311 is provided with an external thread, and the external thread is helically connected to the assembly bracket 12 to drive the assembly bracket 12 to move along the axis of the external thread.

[0036] The housing 10 includes an assembly bracket 12 for fixing the switching motor 31. The assembly bracket 12 is provided with a movable slot 121. The flange 312 is movably limited in the movable slot 121, and the threaded portion 311 passes through the assembly bracket 12. The assembly bracket 12 is spaced apart from the mounting bracket 11. The assembly bracket 12 is provided with an assembly hole 121, and the switching motor 31 is inserted and fixed in the assembly hole 121. Anti-rotation surfaces are provided on the switching motor 31 and the assembly hole 121 to accurately position the assembly angle and position of the switching motor 31. The movable slot 121 is located at the end of the assembly bracket 12, and the movable slot 121 is a recessed T-slot structure. That is, the movable slot 121 includes a laterally recessed groove portion and an open slot communicating with the groove portion. The flange 312 is snapped into the opening of the groove portion, and the threaded portion 311 passes through the open slot, so that the flange 312 is limited within the movable slot 121 without affecting the rotation of the threaded portion 311. Moreover, the flange 312 and the movable slot 121 cooperate to form an anti-overturning structure. Preferably, the thickness of the flange 312 is slightly less than the thickness of the groove portion to achieve the corresponding limiting structure.

[0037] The housing 10 further includes an outer shell 13, and the assembly bracket 12 is fixed to the outer shell 13. A control board is installed inside the assembly bracket 12, and the control board is used to control the switching motor 31 and the power drive assembly 20 to achieve motor function control.

[0038] The mounting bracket 11 moves linearly back and forth under the drive of the threaded sleeve 32 to achieve stroke control. The curtain motor driving device 100 further includes a detection component 40, and the detection component 40 is used to detect the moving stroke of the mounting bracket 11. Specifically, the detection component 40 includes an induction unit 42 and a trigger unit 41. The induction unit 42 is installed on the housing 10, and the trigger unit 41 is installed on the mounting bracket 11. The trigger unit 41 moves synchronously with the mounting bracket 11, and the induction unit 42 is located on the moving path of the trigger unit 41. The induction unit 42 is used to trigger the moving stroke of the mounting bracket 11 to form an automatic detection structure. The trigger unit 41 is arranged on the mounting bracket 11. During the movement of the mounting bracket 11, the trigger unit 41 moves within the detection area of the induction unit 42. The induction unit 42 and the trigger unit 41 can be set as an induction mechanism or a trigger mechanism. For example, the induction unit 42 and the trigger unit 41 are set as a Hall induction mechanism, a travel switch trigger mechanism, or an optoelectronic switch mechanism.

[0039] Preferably, the induction unit 42 includes a first detection member 421 and a second detection member 422 that are spaced apart. The trigger unit 41 moves between the first detection member 421 and the second detection member 422. The first detection member 421 and the second detection member 422 are set as travel switches. The first detection member 421 is used to detect the first end limit position of the movement of the mounting bracket 11, and the second detection member 422 is used to detect the second end limit position of the movement of the mounting bracket 11. The first detection member 421 and the second detection member 422 send electrical signals to the control circuit of the switching motor 31, and the switching motor 31 controls start and stop based on this electrical signal, so as to realize the installation position of the mounting bracket 11.

[0040] Wherein, the trigger unit 41 and the mounting bracket 11 are detachably connected. The trigger unit 41 is set as a trigger rod or a trigger ring or a trigger member, and the trigger unit 41 can be locked, plugged and connected through fasteners and other disassembly and assembly structures.

[0041] In another embodiment, the trigger unit 41 and the mounting bracket 11 are of an integral structure. The trigger unit 41 is set as a U-shaped bracket structure. The bracket structure is a ribbed structure. The cross bar of the bracket structure is located between the first detection member 421 and the second detection member 422 to form a moving trigger structure. Optionally, the trigger unit 41 is set as an L-shaped structure. The trigger unit 41 is a bent structure, and this bent structure is located between the first detection member 421 and the second detection member 422 to form a moving trigger structure.

[0042] In one embodiment, the mounting bracket 11 includes a mounting portion 111, a driving portion 112, and a connecting portion 113 connecting the mounting portion 111 and the driving portion 112. The mounting portion 111 is provided with a mounting cavity and a sliding portion 114 on the outer peripheral wall. The sliding portion 114 is slidably connected to the casing 10. The power driving assembly 20 is mounted on the mounting portion 111 and at least partially located in the mounting cavity. The linear driving assembly 30 is helically connected to the driving portion 112. The mounting portion 111 is located at one end of the mounting bracket 11, and the power driving assembly 20 is inserted into the mounting cavity to make full use of the installation space. The power driving assembly 20 is set as a power motor and a speed reducer connected to the power motor. The speed reducer is located in the mounting cavity. Part of the power motor extends into the mounting cavity, so as to realize the compact assembly of the mounting bracket 11 and the power motor.

[0043] The sliding part 114 is located on the outer peripheral wall of the mounting part 111. Preferably, the housing 13 includes a front end cover 14 detachably assembled to the housing 13. The front end cover 14 is provided with a guiding part 141 that cooperates with the sliding part 114. The guiding part 141 and the sliding part 114 cooperate to form a linear sliding fit structure. Optionally, the sliding part 114 is a sliding rib protruding from the surface of the mounting part 111, and the front end cover 14 is provided with a sliding groove adapted to the sliding part 114 to form a linear sliding fit structure. Optionally, the sliding part 114 is a sliding groove recessed from the surface of the mounting part 111, and the front end cover 14 is provided with a sliding rib adapted to the sliding part 114 to form a linear sliding fit structure.

[0044] The driving part 112 is provided with a threaded hole 115, and the threaded sleeve 32 is spirally connected to the threaded hole 115 of the driving part 112. Optionally, the connecting part 113 is provided as four connecting ribs 1131, and the four connecting ribs 1131 connect the mounting part 111 from the four corners to form a multi-point connection structure. Optionally, the connecting part 113 is provided as two connecting walls, and the two connecting walls symmetrically connect the mounting part 111 to form a symmetrical connection structure. The power driving assembly 20 is mounted to the mounting part 111 from the side of the connecting part 113, improving the convenience of assembly.

[0045] Applying the curtain motor driving device 100 disclosed in the above embodiments to an electric curtain. Among them, the electric curtain includes the curtain motor driving device 100. The electric curtain further includes a guide rail assembly 300 and a transmission box assembly 200. The curtain motor driving device 100 is telescopically and switchably drivingly connected to the transmission box assembly 200. The transmission box assembly 200 is provided with a light adjustment gear assembly and an opening and closing gear assembly. The power driving assembly 20 is switched and moved under the drive of the linear driving assembly 30, so that the power driving assembly 20 is connected to one of the light adjustment gear assembly and the opening and closing gear assembly to achieve the light adjustment or opening and closing function.

[0046] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed by the present invention. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0047] It should be understood that the present invention is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A curtain motor driving device, characterized in that: The invention comprises a housing (10), a mounting bracket (11) slidably connected to the housing (10), a power drive assembly (20) mounted on the mounting bracket (11), and a linear drive assembly (30) connected to the mounting bracket (11), wherein the linear drive assembly (30) drives the mounting bracket (11) to slide linearly along the housing (10), and the power drive assembly (20) changes the power output position as the mounting bracket (11) moves.

2. The curtain motor driving device according to claim 1, characterized in that: The linear drive assembly (30) is screw-connected to the mounting bracket (11).

3. The curtain motor driving device according to claim 2, characterized in that: The linear drive assembly (30) comprises a switching motor (31) fixed to the housing (10) and a threaded sleeve (32) connected to an output shaft of the switching motor (31); the threaded sleeve (32) and the mounting bracket (11) are threadedly connected.

4. The curtain motor driving device according to claim 3, characterized in that: The threaded sleeve (32) is provided with a receiving space (313), and at least a portion of the switching motor (31) extends into the receiving space (313) and is fixedly connected to the threaded sleeve (32).

5. The curtain motor driving device according to claim 3, characterized in that: The threaded sleeve (32) comprises a threaded portion (311) and a flange (312) protruding from one end of the threaded portion (311); the housing (10) comprises an assembly bracket (12) for fixing the switching motor (31); the assembly bracket (12) is provided with a movable groove (121); the flange (312) is movably limited in the movable groove (121); and the threaded portion (311) passes through the assembly bracket (12).

6. The curtain motor driving device according to claim 1, characterized in that: The curtain motor driving device (100) further comprises a detection component (40), the detection component (40) comprising a trigger unit (41) and a sensing unit (42), the sensing unit (42) being mounted on the housing (10), the trigger unit (41) being mounted on the mounting bracket (11), the trigger unit (41) moving synchronously with the mounting bracket (11), and the sensing unit (42) being located on a moving path of the trigger unit (41).

7. The curtain motor driving device according to claim 6, characterized in that: The sensing unit (42) comprises a first detection member (421) and a second detection member (422) which are spaced apart from each other, and the trigger unit (41) moves between the first detection member (421) and the second detection member (422).

8. The curtain motor driving device according to claim 6, characterized in that: The trigger unit (41) and the mounting bracket (11) are detachably connected; or, the trigger unit (41) and the mounting bracket (11) are an integrated structure.

9. The curtain motor driving device according to claim 1, characterized in that: The mounting bracket (11) comprises a mounting portion (111), a driving portion (112), and a connecting portion (113) connecting the mounting portion (111) and the driving portion (112); the mounting portion (111) is provided with a mounting cavity and a sliding portion (114) located on an outer peripheral wall; the sliding portion (114) is slidably connected to the housing (10); the power drive assembly (20) is mounted on the mounting portion (111) and is at least partially located in the mounting cavity; and the linear drive assembly (30) is spirally connected to the driving portion (112).

10. An electric curtain, characterized in that: The electric curtain comprises a curtain motor drive device (100) as claimed in any one of claims 1 to 9, the electric curtain further comprising a guide rail assembly (300) and a transmission box assembly (200), the curtain motor drive device (100) being in telescopic switching drive connection with the transmission box assembly (200).

Images