Curtain driving device

Abstract

The utility model relates to a curtain driving device which comprises a motor assembly and a transmission case assembly, and the motor assembly comprises an output end and a locking ring surrounding the output end; the transmission box assembly comprises a transmission end and a rotary buckling ring surrounding the transmission end, the locking ring and the rotary buckling ring are rotationally locked after being matched in an inserted mode, and the transmission end is in power transmission connection with the output end. The motor assembly and the transmission case assembly are arranged in a split mode and are conveniently disassembled and connected through a locking ring and a rotating buckle ring, and maintenance is convenient. After the motor assembly is assembled to the transmission box assembly, power transmission is achieved between the transmission end and the output end, and the structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of shading, in particular to a curtain, and in particular to a curtain driving device. Background Art

[0002] The curtain drive device has a motor assembly driven by a motor and a transmission box assembly connected to the motor assembly, and the transmission box assembly drives the hook assembly to move through a transmission belt to drive the power output by the motor assembly. The existing curtain drive device is installed at one end of the curtain, and the transmission belt moves forward and backward to drive the curtain to open and close.

[0003] The existing motor assembly and transmission box assembly are locked by a lock structure. Since the existing lock structure needs to be arranged based on the shape and space of the motor assembly and the transmission box assembly, when the overall size of the motor assembly is long and the width is small, the lock assembly needs to be exposed for easy operation. When the motor assembly is short in length and large in width, there is a small operating space and great difficulty in locking, which makes it difficult to use the existing exposed lock assembly. Therefore, improvement is needed. Utility Model Content

[0004] In order to overcome the problems existing in the related art, an embodiment of the utility model provides a curtain driving device to solve the technical problems of small operating space and great operating difficulty of the curtain driving device.

[0005] According to a first aspect of an embodiment of the utility model, a curtain driving device is provided, the curtain driving device comprising a motor assembly and a transmission box assembly, the motor assembly comprising an output end and a locking ring surrounding the output end;

[0006] The transmission box assembly includes a transmission end and a turn-down ring surrounding the transmission end. The locking ring and the turn-down ring are plugged and matched to rotate and lock. The transmission end is connected to the output end for power transmission.

[0007] In one embodiment, the locking ring is provided with at least two protruding snap-fitting bosses, the screw-on ring is provided with an avoidance groove and a positioning portion adapted to the snap-fitting bosses, and the snap-fitting boss is inserted from the avoidance groove and is rotated to be snap-fitted to the positioning portion.

[0008] In one embodiment, the positioning portion is configured as a recessed groove formed by recessing from the wall surface of the spin ring; or, the positioning portion is configured as a plurality of positioning bosses protruding from the wall surface of the spin ring.

[0009] In one embodiment, the transmission end and the output end are plug-fitted, and the transmission end and the output end are provided with at least one transmission surface for transmitting power.

[0010] In one embodiment, one of the transmission end and the output end is provided with a spline shaft, and the other is provided with a matching spline groove, and the spline shaft and the spline groove are plug-fittedly connected.

[0011] In one embodiment, the transmission box assembly includes a transmission box body and a locking assembly elastically and telescopically mounted on the transmission box body, the locking assembly and the rotating buckle ring are spaced apart, and the locking assembly is telescopically engaged with the motor assembly.

[0012] In one embodiment, the locking assembly includes a locking member slidably connected to the transmission housing and an elastic member applying an elastic pre-tightening force to the locking member, and a locking portion of the locking member extends out of the transmission housing.

[0013] In one embodiment, the transmission box assembly includes a pulley set for connecting a transmission belt, and the pulley set is drivingly connected to the transmission end.

[0014] In one embodiment, the transmission housing is provided with a recessed air-avoiding groove, the motor assembly is attached to the transmission housing, and the locking ring and the buckle ring are located in the air-avoiding groove.

[0015] In one embodiment, the motor assembly includes a motor housing, the motor housing is provided with an assembly surface and a locking groove recessed from the assembly surface, the output end protrudes from the assembly surface, and the locking assembly is engaged and locked into the locking groove.

[0016] The technical solution provided by the embodiment of the utility model may have the following beneficial effects: the motor assembly and the transmission box assembly are separately arranged and conveniently disassembled and connected through a locking ring and a turnbuckle ring, which is convenient for maintenance. After the motor assembly is assembled to the transmission box assembly, the transmission end and the output end realize power transmission, and the structure is compact.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0019] Figure 1 It is a schematic structural diagram of a curtain driving device according to an exemplary embodiment.

[0020] Figure 2 The figure is a schematic diagram of the assembly structure of a curtain driving device according to an exemplary embodiment.

[0021] Figure 3It is a schematic structural diagram of a curtain driving device with a hidden transmission box according to an exemplary embodiment.

[0022] Figure 4 It is a schematic structural diagram of a curtain driving device hiding the top of a transmission box according to an exemplary embodiment.

[0023] Figure 5 It is a schematic structural diagram of a curtain driving device with a partially hidden motor box according to an exemplary embodiment.

[0024] In the figure, the motor assembly 10; the motor housing 11; the assembly surface 111; the locking groove 112; the locking ring 12; the snap-fit ​​boss 121; the output end 13; the spline groove 131; the drive motor 14; the reducer 15; the control board 16; the transmission box assembly 20; the transmission box 21; the avoidance groove 211; the fitting surface 212; the slide groove 213; the screw ring 22; the positioning part 221; the air avoidance groove 222; the transmission end 23; the lock assembly 24; the locking piece 241; the locking tongue 2411; the pressing column 2412; and the pulley assembly 25. DETAILED DESCRIPTION

[0025] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size 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.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention 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 describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figures 1 to 3 As shown, the utility model provides a curtain driving device, which includes a motor assembly 10 and a transmission box assembly 20. The motor assembly 10 includes an output end 13 and a locking ring 12 surrounding the output end 13, and the output end 13 of the motor assembly 10 is used for driving force. The output end 13 is located in the surrounding area of ​​the locking ring 12 to form a local protruding structure. Preferably, the output end 13 and the locking ring 12 are coaxially arranged.

[0029] The transmission box assembly 20 includes a transmission end 23 and a turn-on ring 22 surrounding the transmission end 23. The locking ring 12 and the turn-on ring 22 are plugged and matched and then rotated and locked, so that the transmission box assembly 20 and the motor assembly 10 are locked and connected. That is, the motor assembly 10 and the transmission box assembly 20 are separately arranged, and the locking ring 12 and the turn-on ring 22 are turned and disassembled to be connected, which is convenient for disassembly and maintenance. At the same time, the transmission end 23 is connected to the output end 13 by power transmission, thereby realizing a power drive connection. After the motor assembly 10 is assembled to the transmission box assembly 20, the transmission end 23 and the output end 13 realize power transmission, and the structure is compact.

[0030] The turn-on ring 22 and the locking ring 12 are annular structures or multiple boss structures distributed in an annular shape. In one embodiment, the turn-on ring 22 is plugged into the locking ring 12, and the locking ring 12 is provided with at least two buckling bosses 121 protruding toward the center direction, and the turn-on ring 22 is provided with an avoidance groove 211 and a positioning portion 221 adapted to the buckling boss 121, and the buckling boss 121 is inserted from the avoidance groove 211 and is rotated and buckled to connect to the positioning portion 221.

[0031] The turn-on ring 22 and the locking ring 12 are plug-in fitting structures, which can form a concentric fitting positioning connection. The multiple snap-fit ​​bosses 121 provided on the locking ring 12 protrude toward the center direction, and a gap space is formed between two adjacent snap-fit ​​bosses 121. The positioning portion 221 is distributed on the outer peripheral wall of the turn-on ring 22. During the insertion process, the positioning portion 221 is inserted into the locking ring 12 along the gap space, and the avoidance groove 211 and the snap-fit ​​boss 121 slide correspondingly, so that the turn-on ring 22 and the locking ring 12 are plug-fitted. After the transmission box assembly 20 is assembled in place, it is rotated so that the positioning portion 221 rotates correspondingly to the bottom of the snap-fit ​​boss 121, forming an inverted locking structure, and realizing the anti-slip assembly of the transmission box assembly 20 and the motor assembly 10. Preferably, the number of the snap-fit ​​bosses 121 can be set to two, three, four, or five.

[0032] In an optional embodiment, the positioning portion 221 is configured as a recessed groove formed by a recessed wall surface of the spin-lock ring 22, wherein the recessed groove is inclined or curved relative to the avoidance groove 211 to change the groove path. For example, the positioning portion 221 and the avoidance groove 211 are in an "L"-shaped structure. After the snap-fit ​​boss 121 slides along the avoidance groove 211 to the recessed groove and rotates, the snap-fit ​​boss 121 and the groove wall of the recessed groove are mutually snapped and locked to form a spin-lock connection. Optionally, the recessed groove can be configured as a partially recessed groove structure, which can be adapted to groove structures of different shapes, such as a straight line, a curve, or a shape with a partially changed cross-sectional size. Optionally, the recessed groove is configured as an annular groove to form a rotating buckle structure at any angle.

[0033] In another optional embodiment, the positioning portion 221 is configured as a plurality of positioning bosses protruding from the wall surface of the rotary buckle ring 22. The protruding direction of the positioning boss is opposite to the protruding direction of the snap-fit ​​boss 121. After the snap-fit ​​boss 121 slides over the positioning boss along the avoidance groove 211 and rotates, the projections of the snap-fit ​​boss 121 and the positioning boss in the direction perpendicular to the axial direction at least partially overlap, so as to realize the rotary snap-fit ​​connection.

[0034] The transmission end 23 and the output end 13 cooperate to transmit power, for example, the transmission end 23 and the output end 13 are toothed in meshing mode to transmit power; or, the transmission end 23 and the output end 13 are equipped with complementary concave and convex structures to achieve power transmission; or, the transmission end 23 and the output end 13 are equipped with a plug-in shaft and a hole to achieve power transmission.

[0035] Preferably, the transmission end 23 and the turn-on ring 22 are coaxially arranged. After the turn-on ring 22 is plugged into place, the transmission end 23 and the output end 13 are connected and positioned to form a power transmission structure. In one embodiment, the transmission end 23 and the output end 13 are plugged together, and the transmission end 23 and the output end 13 are provided with at least one transmission surface for transmitting power. Among them, the transmission end 23 is provided as a convex shaft structure, and the output end 13 is provided with a groove structure; or the transmission end 23 is provided as a groove structure, and the output end 13 is provided with a convex shaft structure. After the transmission end 23 and the output end 13 are plugged together, the transmission surfaces cooperate with each other to achieve power transmission cooperation. Optionally, the transmission end 23 is provided as a flat shaft, a spline shaft, a rectangular shaft or the like.

[0036] In a preferred embodiment, one of the transmission end 23 and the output end 13 is provided with a spline shaft, and the other is provided with a matching spline groove 131, and the spline shaft and the spline groove 131 are plug-fitted and connected. The spline shaft and the spline groove 131 are plug-fitted to form a power transmission with high transmission efficiency and high assembly accuracy. Preferably, the transmission end 23 is provided with a spline shaft, and the output end 13 is provided with a spline groove 131.

[0037] like Figures 2 to 5 As shown, the motor assembly 10 and the transmission box assembly 20 are connected by a locking ring 12 and a turn-on ring 22. Further, the transmission box assembly 20 includes a transmission box body 21 and a locking assembly 24 elastically and telescopically mounted on the transmission box body 21. The locking assembly 24 and the turn-on ring 22 are arranged at intervals, and the locking assembly 24 is telescopically engaged with the motor assembly 10. The locking assembly 24 can lock the transmission box body 21 to prevent the motor assembly 10 from rotating relative to the transmission box assembly 20. Preferably, the turn-on ring 22 turns and locks the locking ring 12, and the locking assembly 24 is arranged at intervals and locks the other side of the transmission box body 21, thereby realizing anti-rotation locking.

[0038] Preferably, the lock assembly 24 is telescopically movable to realize a movable connection structure. Wherein, the lock assembly 24 includes a locking member 241 slidably connected to the transmission housing 21 and an elastic member applying an elastic preload force to the locking member 241, and the locking portion of the locking member 241 extends out of the transmission housing 21. The locking member 241 extends out of the transmission housing 21 under the elastic preload force of the elastic member to construct an automatic telescopic structure. Preferably, the locking member 241 is slidably connected to the slide groove 213 of the transmission housing 21, and the slide groove 213 intersects with the fitting surface 212 of the transmission housing 21, and the fitting surface 212 is the fitting surface of the transmission housing 21 and the motor assembly 10. The elastic member is set as a spring, and the locking member 241 is provided with a mounting column, and the spring is sleeved on the mounting column and abuts against the transmission housing 21 to realize elastic preload assembly. Optionally, the locking member 241 is provided with a lock tongue 2411, and the lock tongue 2411 extends out of the fitting surface 212 and is locked with the motor assembly 10.

[0039] Furthermore, the locking member 241 is provided with a pressing column 2412, which protrudes from the transmission housing 21 and is located outside the motor assembly 10. The pressing column 2412 and the locking tongue 2411 are arranged at intervals and form a synchronous telescopic sliding. The pressing column 2412 is compressed into the transmission housing 21 by force to release the locking tongue 2411 from locking the motor assembly 10. When the pressing column 2412 is released, the locking member 241 is reset and extends out of the transmission housing 21 under the elastic preload of the spring.

[0040] Further, the transmission box assembly 20 includes a pulley assembly 25 for connecting the transmission belt, the pulley assembly 25 is drivingly connected to the transmission end 23, and the lock assembly 24 is located in the surrounding area of ​​the transmission belt. The pulley assembly 25 is connected to the transmission belt, and the transmission belt extends out of the transmission box 21. A belt space is formed between the two opposite sides of the transmission belt, and the lock assembly 24 is located in the belt space, which can increase the spacing distance between the lock assembly 24 and the rotating buckle ring 22, improve the locking effect, and provide a support point for the operation of the transmission belt. Preferably, the lock assembly 24 is located in the center of the belt space.

[0041] like Figures 2 to 5 As shown, in one embodiment, the motor assembly 10 includes a motor housing 11, the motor housing 11 is provided with an assembly surface 111 and a locking groove 112 recessed from the assembly surface 111, the output end 13 protrudes from the assembly surface 111, and the lock assembly 24 is engaged and locked to the locking groove 112. The motor housing 11 is a hollow thin-walled structural member, and accessories such as a drive motor 14 and a control board 16 are assembled in the motor housing 11. The assembly surface 111 is the bonding surface of the motor housing 11 and the transmission housing 21, the locking ring 12 protrudes from the surface of the assembly surface 111, and the output end 13 and the locking ring 12 are coaxially arranged. The locking grooves 112 are spaced apart from the locking ring 12 to increase the spacing between the locking grooves 112 and the locking ring 12, thereby improving the connection stability of the motor assembly 10 and the transmission housing assembly 20. Optionally, the locking groove 112 is configured as a rectangular countersunk hole, a circular countersunk hole or other countersunk hole shapes to adapt to the lock tongue shape of the locking member 241.

[0042] Further preferably, the motor assembly 10 includes a drive motor 14 installed in the motor housing 11, and the drive motor 14 is provided with a reducer 15, and the reducer 15 is connected to the output terminal 13 to form a power output structure. An electrical compartment is formed in the motor housing 11 by partitions, and the control board 16 is installed in the electrical compartment to facilitate electrical separation.

[0043] In one embodiment, the transmission housing 21 is provided with a recessed air-avoiding groove 222, the motor assembly 10 is fitted to the transmission housing 21, and the locking ring 12 and the turn-on ring 22 are located in the air-avoiding groove 222. The air-avoiding groove 222 is a recessed space formed by the recess of the fitting surface 212 of the transmission housing 21, and the recessed space can accommodate the plug-in mating part of the locking ring 12 and the turn-on ring 22, so that the motor assembly 10 can fit tightly with the transmission housing assembly 20, and the turn-on connection part is hidden. Optionally, the cross-sectional size of the air-avoiding groove 222 can be flexibly set according to the spatial layout, and the cross-sectional shape can be flexibly adjusted based on the internal space. For example, the air-avoiding groove 222 can be set as a circular countersunk hole, a polygonal countersunk hole, or a special-shaped countersunk hole.

[0044] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed 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 common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0045] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A curtain driving device, comprising a motor assembly (10) and a transmission box assembly (20), characterized in that: The motor assembly (10) comprises an output end (13) and a locking ring (12) surrounding the output end (13); The transmission box assembly (20) comprises a transmission end (23) and a turn-down ring (22) surrounding the transmission end (23); the locking ring (12) and the turn-down ring (22) are plugged in and locked in rotation; and the transmission end (23) is connected to the output end (13) via power transmission.

2. The curtain driving device according to claim 1, characterized in that: The locking ring (12) is provided with at least two protruding buckling bosses (121), the rotating buckle ring (22) is provided with an avoidance groove (211) and a positioning portion (221) adapted to the buckling bosses (121), and the buckling bosses (121) are inserted from the avoidance grooves (211) and are rotated to be buckled and connected to the positioning portion (221).

3. The curtain driving device according to claim 2, characterized in that: The positioning portion (221) is configured as a recessed groove formed by recessing from the wall surface of the spin buckle ring (22); or, the positioning portion (221) is configured as a plurality of positioning bosses protruding from the wall surface of the spin buckle ring (22).

4. The curtain driving device according to claim 1, characterized in that: The transmission end (23) and the output end (13) are plug-fitted, and the transmission end (23) and the output end (13) are provided with at least one transmission surface for transmitting power.

5. The curtain driving device according to claim 4, characterized in that: One of the transmission end (23) and the output end (13) is provided as a spline shaft, and the other is provided with a matching spline groove (131), and the spline shaft and the spline groove (131) are plug-fittedly connected.

6. The curtain driving device according to claim 1, characterized in that: The transmission box assembly (20) comprises a transmission box body (21) and a locking assembly (24) elastically and telescopically mounted on the transmission box body (21); the locking assembly (24) and the rotating buckle ring (22) are arranged at intervals; and the locking assembly (24) is telescopically engaged with the motor assembly (10).

7. The curtain driving device according to claim 6, characterized in that: The lock assembly (24) comprises a locking member (241) slidably connected to the transmission housing (21) and an elastic member applying an elastic pre-tightening force to the locking member (241); a locking portion of the locking member (241) protrudes from the transmission housing (21).

8. The curtain driving device according to claim 6, characterized in that: The transmission box assembly (20) comprises a pulley set (25) for connecting a transmission belt, and the pulley set (25) is drivingly connected to the transmission end (23).

9. The curtain driving device according to claim 6, characterized in that: The transmission housing (21) is provided with a recessed air-avoiding groove (222), the motor assembly (10) is fitted to the transmission housing (21), and the locking ring (12) and the rotating buckle ring (22) are located in the air-avoiding groove (222).

10. The curtain driving device according to claim 6, characterized in that: The motor assembly (10) comprises a motor housing (11), the motor housing (11) being provided with an assembly surface (111) and a locking groove (112) recessed from the assembly surface (111), the output end (13) protruding from the assembly surface (111), and the locking assembly (24) being engaged and locked into the locking groove (112).

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