Driving device of electric curtain

Abstract

The utility model relates to a driving device of an electric curtain, and relates to the technical field of electric curtains. The driving device of the electric curtain comprises an end box used for being connected with a curtain rail and a motor assembly module used for driving a curtain belt to operate. The motor assembly module comprises a motor sleeve and a driving motor fixedly arranged in the motor sleeve; one end of the motor sleeve is inserted into the end box, and the motor sleeve and the end box are provided with a first limiting assembly used for limiting relative axial movement of the motor sleeve and the end box and a second limiting assembly used for limiting relative circumferential rotation of the motor sleeve and the end box. According to the technical scheme, the quick mounting and dismounting functions of the electric curtain driving device are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric curtain, and in particular to a driving device of electric curtain. BACKGROUND

[0002] As a convenient home equipment, electric curtain has been widely used in family and office. With the development of smart home technology, electric curtain not only improves the convenience of life, but also enhances the comfort and aesthetics of living environment.

[0003] Electric curtain usually realizes the automatic opening and closing function of the curtain through electric drive. The driving device is one of the core components of the electric curtain. The existing driving device of electric curtain usually includes an end box for connecting with the curtain track and a motor assembly module for driving the curtain belt to run. The motor is installed in the motor sleeve, and the end box and the motor sleeve are locked by screws. Two hands or multiple workers are needed to complete the installation, which is not convenient and slow, and also increases the labor intensity of workers, prolongs the construction period and leads to the rise of overall cost. CONTENT OF THE INVENTION

[0004] In order to improve the convenience of assembling and disassembling the driving device of electric curtain, the present application provides a driving device of electric curtain.

[0005] The driving device of electric curtain provided by the present application adopts the following technical scheme:

[0006] The driving device of electric curtain comprises an end box for connecting with the curtain track and a motor assembly module for driving the curtain belt to run.

[0007] The motor assembly module comprises a motor sleeve and a driving motor fixed in the motor sleeve.

[0008] One end of the motor sleeve is inserted into the end box, and the motor sleeve and the end box are provided with a first limiting component for limiting the relative axial movement of the two and a second limiting component for limiting the relative circumferential rotation of the two.

[0009] The end box is used to be connected with the curtain rail, and the motor assembly module is assembled with the end box, so as to drive the curtain belt to run and realize the automatic opening and closing function of the curtain. When the motor assembly module is assembled with the end box, one end of the motor sleeve is inserted into the end box, the end of the motor sleeve is butted with the end box, the motor sleeve is rotated, the relative axial movement of the motor sleeve and the end box is limited by the first limiting assembly, and the relative circumferential rotation of the motor sleeve and the end box is limited by the second limiting assembly, so that the quick mounting and dismounting function of the end box and the motor assembly module is realized. The complicated screw fastening mode is avoided, the quick mounting and dismounting problem under single-person operation is effectively solved, especially in the case of frequent adjustment or maintenance, the mounting and dismounting of the motor assembly module and the end box are easily completed by one hand, the dismounting steps are greatly simplified, and the dismounting efficiency is improved; the installation convenience and economy of the electric curtain driving device are greatly improved.

[0010] Optionally, the first limiting assembly comprises a locking groove formed on the outer circumferential surface of the end of the motor sleeve and a limiting protrusion arranged on the inner wall of the end of the end box; the locking groove comprises a vertical groove extending along the axial direction of the end surface of the motor sleeve and a horizontal groove located on the circumferential surface of the motor sleeve; one end of the horizontal groove is in communication with one end of the vertical groove; the limiting protrusion can move through the vertical groove into the horizontal groove and form axial limiting of the motor sleeve and the end box.

[0011] By adopting the above technical scheme, the limiting protrusion can be accurately moved from the vertical groove into the horizontal groove, the axial fixation of the motor sleeve and the end box is realized, and loosening or falling off of the two during use is prevented. This design not only simplifies the installation process, but also improves the safety and stability of the equipment, so that the user can complete the installation by one hand, greatly saving the labor and installation time cost.

[0012] Optionally, the locking groove and the limiting protrusion have at least two groups, and a plurality of groups of locking grooves and limiting protrusions are symmetrically or intervally distributed along the circumferential direction of the motor sleeve; each group of locking grooves corresponds to one limiting protrusion.

[0013] By adopting the above technical scheme, the setting of the plurality of groups of locking grooves and limiting protrusions not only enhances the effect of axial limiting, but also improves the operation precision during installation, and ensures the accurate cooperation between the components. The symmetric or interval distribution further ensures uniform stress and avoids the damage risk caused by local stress concentration. In addition, this design simplifies the installation process, reduces the installation time and labor cost, and improves the user experience.

[0014] Optionally, the end box has a cylindrical connecting part, a cylindrical mounting hole is formed in the cylindrical connecting part, the end of the motor sleeve has a thin shaft part for being inserted into the cylindrical mounting hole, the body of the motor sleeve and the junction of the thin shaft part form an abutting step surface for abutting against the end surface of the cylindrical connecting part, the limiting protrusion is located on the hole wall of the cylindrical mounting hole of the cylindrical connecting part, and the locking groove is located on the outer circumferential surface of the thin shaft part.

[0015] By adopting the above technical scheme, the cylindrical mounting hole on the cylindrical connecting part cooperates with the thin shaft part of the motor sleeve, ensuring accurate positioning and close connection of the two in the axial direction. Meanwhile, the design of the abutting step surface further enhances the contact area of the two, forms axial limiting, improves the connection strength and stability and reliability, and also simplifies the installation process, so that the operation can be completed by one hand, greatly improving the installation efficiency and convenience. In addition, the outer circumferential surface of the body of the motor sleeve can be flush with the outer circumferential surface of the cylindrical connecting part, which is more beautiful.

[0016] Optionally, the limiting protrusion is a cuboid, the length direction of the limiting protrusion is along the circumferential direction of the inner wall of the cylindrical connecting part, and the width direction of the limiting protrusion is along the axial direction of the cylindrical connecting part; the width of the vertical groove is greater than the width of the horizontal groove, and the width of the vertical groove matches the length of the limiting protrusion; and the width of the horizontal groove matches the width of the limiting protrusion.

[0017] By adopting the above technical scheme, the accurate cooperation between the limiting protrusion and the locking groove is ensured. The width of the vertical groove is greater than the width of the horizontal groove and matches the size of the limiting protrusion, facilitating the smooth entry of the limiting protrusion into the locking groove and realizing accurate positioning in the axial and circumferential directions at different positions. This design makes the installation process smoother, improves the assembly efficiency, reduces the possibility of misoperation, and further improves the reliability and user experience of the product.

[0018] Optionally, a guide inclined surface extending from the vertical groove wall to the end surface of the motor sleeve is arranged at the slot opening of the vertical groove, and the guide inclined surfaces on both sides of the vertical groove form a guide opening.

[0019] By adopting the above technical scheme, the design of the guide inclined surface makes the insertion of the limiting protrusion into the vertical groove smoother, reduces the installation resistance, and improves the installation efficiency. The existence of the guide opening further ensures that the limiting protrusion can accurately enter the locking groove, avoids installation failure caused by position deviation, and enhances the reliability and stability of the installation process.

[0020] Optionally, the second limiting component comprises a clamping groove arranged on the inner wall of the end portion of the motor sleeve and a clamping piece arranged on the end box, one side of the clamping piece is provided with a clamping protrusion capable of being embedded in the clamping groove, and the end box is further provided with an elastic piece for pushing the clamping protrusion into the clamping groove, and pressing the clamping piece can make the clamping protrusion overcome the elastic force of the elastic piece and thus disengage from the clamping groove.

[0021] By adopting the above technical scheme, the cooperation of the clamping groove and the clamping piece effectively limits the circumferential rotation between the motor sleeve and the end box, thereby effectively limiting the disengagement of the limiting protrusion on the inner wall of the end box from the locking groove of the motor sleeve, and enhancing the overall stability of the device. At the same time, the design of the elastic piece enables the clamping protrusion to be automatically embedded in the clamping groove without external force, ensuring that the installation process is simple and convenient. When unlocking is required, the clamping protrusion can be disengaged from the clamping groove by pressing the clamping piece, achieving quick disassembly and greatly improving the installation and maintenance efficiency.

[0022] Optionally, the end box is provided with a mounting sliding groove, the clamping piece is slidingly arranged in the mounting sliding groove, the clamping piece is provided with a mounting cavity, the end box is fixedly provided with a mounting seat, the mounting seat is provided with a first connecting column facing the clamping piece, the mounting cavity is provided with a second connecting column opposite to the first connecting column, and the elastic piece is a spiral spring and the two ends of the elastic piece are sleeved on the first connecting column and the second connecting column respectively.

[0023] By adopting the above technical scheme, the spiral spring as the elastic piece can provide stable elastic force, ensuring that the clamping protrusion is firmly embedded in the clamping groove in a normal state, and achieving reliable circumferential limiting. When the clamping piece is pressed, the spiral spring is compressed, the clamping protrusion can smoothly disengage from the clamping groove, achieving quick unlocking, facilitating single-handed operation of the user, and significantly improving the convenience of installation and disassembly. The design of the mounting sliding groove enables the clamping piece to smoothly slide in the predetermined position, ensuring the stability and reliability of the operation. The cooperation of the mounting cavity in the clamping piece and the first connecting column and the second connecting column not only simplifies the installation process of the elastic piece, but also ensures that the elastic piece will not deviate or fall off during operation, improving the stability of the system.

[0024] Optionally, the end portion of the motor sleeve is fixedly provided with an end cover, the end cover has a through hole in the middle portion, and the outer circumferential surface of the end cover is provided with a clamping groove corresponding to the clamping groove, and the clamping protrusion embedded in the clamping groove is also embedded in the clamping groove.

[0025] By adopting the technical scheme, the design of the end cover strengthens the structural strength and sealing performance of the end portion of the motor sleeve, the clamping groove provided on the outer circumferential surface of the end cover is used in cooperation with the clamping groove, the connection stability between the end cover and the motor sleeve is further enhanced, it is ensured that loosening or falling off does not occur during installation and use, and the reliability and safety of the entire device are improved.

[0026] Optionally, the end cover comprises an upper end shell and a lower end shell which are fastened together, a cavity is formed between the upper end shell and the lower end shell, a belt winding end head is arranged in the cavity, the motor assembly module further comprises a speed reducer which is fixedly arranged in the motor sleeve, an output shaft of the driving motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the belt winding end head through the through hole.

[0027] By adopting the technical scheme, the end cover is divided into the upper end shell and the lower end shell, the assembly and maintenance of the internal structure are facilitated, and the assembly efficiency is improved. The output shaft of the speed reducer is connected with the belt winding end head through the through hole, the installation process is further simplified, and the integration and reliability of the system are improved.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. In the present application, the first limiting assembly and the second limiting assembly are used to realize the detachable connection between the motor sleeve and the end cover, one hand can easily complete the installation and disassembly of the motor assembly module and the end cover, the disassembly steps are greatly simplified, the disassembly efficiency is improved, and the installation convenience and economy of the electric curtain driving device are significantly improved.

[0030] 2. In the present application, the first limiting assembly and the second limiting assembly are used to realize the axial and circumferential double limiting between the end cover and the motor sleeve, and the structural stability and reliability after installation are ensured.

[0031] 3. In the present application, the shape and structure of the limiting protrusion and the locking groove are reasonably designed, the accurate cooperation between the limiting protrusion and the locking groove is ensured, and the reliability and user experience of the product are further improved.

[0032] 4. In the present application, the guide slope is arranged at the slot opening of the locking groove, the limiting protrusion is more smooth during the insertion into the vertical slot, the installation resistance is reduced, and the installation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the driving device in the present application.

[0034] Figure 2 It is a schematic diagram of the sectional structure of the driving device in the present application.

[0035] Figure 3 is the exploded structural schematic view of the driving device in the application.

[0036] Figure 4 is the exploded structural schematic view of the end box in the application.

[0037] Figure 5 is Figure 2 the local enlarged structural schematic view at A in the application.

[0038] Figure 6 is the related structural schematic view of the clamping piece in the application.

[0039] in the figure:

[0040] 10, end box; 11, cylindrical connecting part; 111, cylindrical mounting hole; 12, mounting sliding groove; 13, cavity; 14, upper end shell; 15, lower end shell;

[0041] 20, motor assembly module; 21, motor sleeve; 211, thin shaft part; 212, abutting step surface; 22, driving motor; 23, speed reducer; 24, control circuit board; 25, power supply interface;

[0042] 30, belt winding end head;

[0043] 40, end cover; 41, through hole; 42, clamping groove;

[0044] 50, first limiting assembly; 51, locking groove; 511, vertical groove; 512, horizontal groove; 513, guide opening; 52, limiting protrusion;

[0045] 60, second limiting assembly; 61, clamping groove; 62, clamping piece; 621, clamping protrusion; 622, mounting cavity; 63, elastic piece; 64, mounting seat; 65, first connecting column; 66, second connecting column. DETAILED DESCRIPTION

[0046] The following will be combined with the attached Figure 1 - the attached Figure 6 , the technical scheme in the embodiment of the utility model is described clearly and completely, the described embodiment is only possible technical implementation of the utility model, and is not all possible implementations. The skilled in the art can combine the embodiments of the utility model without creative labor to obtain other embodiments, and these embodiments are also within the protection scope of the utility model.

[0047] Referring to Figure 1 and Figure 2As shown, the driving device of the electric curtain in the application comprises an end box 10 and a motor assembly module 20; generally, the driving device is installed at one end of the curtain rail, the end box 10 is used for connecting with the curtain rail, the belt connected with the curtain is arranged in the curtain rail, the curtain is driven to move through the forward and reverse operation of the belt, so as to realize the automatic opening and closing function of the curtain. The motor assembly module 20 is generally vertically arranged at one end of the end box 10, and the upper end of the motor assembly module 20 is connected with the end box 10. The motor assembly module 20 comprises a motor sleeve 21, a driving motor 22 and a speed reducer 23 fixedly arranged in the motor sleeve 21; the motor sleeve 21 is vertically arranged, and a control circuit board 24 is fixedly arranged in the motor sleeve 21 close to the lower end position, the control circuit board 24 is electrically connected with the driving motor 22 in the motor sleeve 21, and the lower end of the motor sleeve 21 is provided with a power supply interface 25, and the external power supply is electrically connected with the control circuit board 24 through the power supply interface 25.

[0048] Referring to Figure 2 As shown, the driving motor 22 is vertically arranged upwards in the motor sleeve 21; the driving motor 22 is located above the control circuit board 24, and the control circuit board 24 is electrically connected with the driving motor 22, the control circuit board 24 is used for controlling the operation of the driving motor 22, the speed reducer 23 is fixedly arranged above the driving motor 22, the end box 10 has a cavity 13, and a belt winding end head 30 is arranged in the cavity 13, the output shaft of the driving motor 22 is connected with the input shaft of the speed reducer 23, the output shaft of the speed reducer 23 is connected with the belt winding end head 30, one end of the belt is sleeved on the belt winding end head 30, and the belt winding end head 30 is driven to rotate through the driving motor 22 and the speed reducer 23, so as to drive the belt to operate.

[0049] Referring to Figure 3 and Figure 4 As shown, the end box 10 is provided with a cylindrical connecting part 11, the cylindrical connecting part 11 is provided with a cylindrical mounting hole 111, the end part of the motor sleeve 21 is provided with a thin shaft part 211 inserted into the cylindrical mounting hole 111, and the body of the motor sleeve 21 and the thin shaft part 211 form a abutting step surface 212 abutting against the end surface of the cylindrical connecting part 11. Figure 2 As shown, the thin shaft part 211 of the motor sleeve 21 is inserted into the cylindrical mounting hole 111 of the cylindrical connecting part 11, the body outer periphery surface of the motor sleeve 21 is flush with the outer periphery surface of the cylindrical connecting part 11, and the motor sleeve 21 and the end box 10 are provided with a first limiting assembly 50 limiting the relative axial movement of the two.

[0050] Specifically, referring to Figure 3 and Figure 4As shown, the first limiting assembly 50 includes a locking groove 51 opened on the outer peripheral surface of the thin shaft part 211 and a limiting protrusion 52 arranged on the hole wall of the cylindrical mounting hole 111 of the cylindrical connecting part 11; the locking groove 51 includes a vertical groove 511 extending along the axial direction of the end face of the motor sleeve 21 and a horizontal groove 512 located on the peripheral surface of the motor sleeve 21 along the circumferential direction, one end of the horizontal groove 512 being in communication with one end of the vertical groove 511; the limiting protrusion 52 can move through the vertical groove 511 into the horizontal groove 512 and form axial limiting of the motor sleeve 21 and the end box 10; in this way, the limiting protrusion 52 can be accurately moved from the vertical groove 511 into the horizontal groove 512, realizing axial fixing of the motor sleeve 21 and the end box 10, preventing loosening or falling off of the two during use, which not only simplifies the installation process, but also improves the safety and stability of the equipment, so that the user can complete the installation with one hand, greatly saving labor and installation time cost.

[0051] In the present application, the locking groove 51 and the limiting protrusion 52 are at least two groups, and several groups of locking grooves 51 and limiting protrusions 52 are symmetrically or spacedly distributed along the circumferential direction of the motor sleeve 21; one locking groove 51 in each group corresponds to one limiting protrusion 52. For example, three groups of locking grooves 51 and limiting protrusions 52 can be provided and uniformly spacedly distributed along the circumferential direction of the motor sleeve 21, and the provision of the three groups of locking grooves 51 and limiting protrusions 52 not only enhances the effect of axial limiting, is more stable, but also improves the operation precision during installation, ensuring the precise cooperation between the components. The symmetric or spaced distribution further ensures uniform stress and avoids the risk of damage due to local stress concentration. In addition, this design simplifies the installation process, reduces installation time and labor cost, and improves user experience.

[0052] Referring to Figure 3 and Figure 4 As shown, the limiting protrusion 52 is a cuboid, the length direction of the limiting protrusion 52 is along the circumferential direction of the inner wall of the cylindrical connecting part 11, and the width direction of the limiting protrusion 52 is along the axial direction of the cylindrical connecting part 11; the width of the vertical groove 511 is greater than the width of the horizontal groove 512, and the width of the vertical groove 511 matches the length of the limiting protrusion 52, and the width of the horizontal groove 512 matches the width of the limiting protrusion 52; a guide inclined surface is arranged at the slot opening of the vertical groove 511 and extends obliquely from the groove wall of the vertical groove 511 to the end face of the motor sleeve 21, and the guide inclined surfaces on both sides of the vertical groove 511 form a guide opening 513, and the design of the guide inclined surface makes the limiting protrusion 52 more smooth during insertion into the vertical groove 511, reduces the installation resistance, and improves the installation efficiency.

[0053] Referring to Figure 5 and Figure 6As shown, the motor sleeve 21 and the end box 10 are provided with a second limiting assembly 60 for limiting the relative circumferential rotation of the two. Specifically, the second limiting assembly 60 includes a clamping groove 61 provided on the inner wall of the end of the motor sleeve 21 and a clamping piece 62 provided on the end box 10, one side of the clamping piece 62 has a clamping protrusion 621 capable of being embedded in the clamping groove 61, and the end box 10 is further provided with a spring 63 for pushing the clamping protrusion 621 into the clamping groove 61, and pressing the clamping piece 62 can make the clamping protrusion 621 overcome the elastic force of the spring 63 and thus disengage from the clamping groove 61.

[0054] Further, referring to Figure 5 As shown, the end box 10 is provided with a mounting slot 12, and the clamping piece 62 is slidingly arranged in the mounting slot 12, and the clamping piece 62 is provided with a mounting cavity 622, and the end box 10 is fixedly provided with a mounting seat 64, and the mounting seat 64 is provided with a first connecting column 65 facing the clamping piece 62, and the mounting cavity 622 is provided with a second connecting column 66 opposite to the first connecting column 65, and the spring 63 is a helical spring and the two ends of the spring 63 are respectively sleeved on the first connecting column 65 and the second connecting column 66. The cooperation of the clamping groove 61 and the clamping piece 62 effectively limits the circumferential rotation between the motor sleeve 21 and the end box 10, thereby effectively limiting the disengagement of the limiting protrusion 52 on the inner wall of the end box 10 from the locking groove 51 of the motor sleeve 21, and enhancing the overall stability of the device. At the same time, the design of the spring 63 makes the clamping protrusion 621 automatically embedded in the clamping groove 61 without external force, ensuring that the installation process is simple and convenient. When it is necessary to unlock, only the clamping protrusion 621 can be disengaged from the clamping groove 61 by pressing the clamping piece 62, realizing quick disassembly, and greatly improving the installation and maintenance efficiency.

[0055] Referring to Figure 3 , Figure 4 and Figure 5As shown, the end box 10 comprises an upper end shell 14 and a lower end shell 15 which are fastened together, and the cavity 13 is located between the upper end shell 14 and the lower end shell 15. In the present application, an end cover 40 is further fastened to the end of the motor sleeve 21 or the inside of the end box 10. The end cover 40 has a through hole 41 in the middle, and the output shaft of the speed reducer 23 passes through the through hole 41 and is connected with the belt winding end head 30. The outer periphery of the end cover 40 is provided with a clamping groove 42 corresponding to the clamping groove 61, and the clamping protrusion 621 clamped in the clamping groove 61 is also clamped in the clamping groove 42. The design of the end box 10 divided into the upper end shell 14 and the lower end shell 15 facilitates the assembly and maintenance of the internal structure, and improves the assembly efficiency. The design of the end cover 40 strengthens the structural strength and sealing performance of the end of the motor sleeve 21. The clamping groove 42 provided on the outer periphery of the end cover 40 is used in cooperation with the clamping groove 61, which further enhances the connection stability between the end box 10 and the motor sleeve 21, ensures that there is no loosening or falling off during installation and use, and improves the reliability and safety of the entire device.

[0056] The implementation principle is as follows: the end box 10 is used to be connected with the curtain rail, and the motor assembly module 20 is assembled with the end box 10, so as to drive the curtain belt to run and realize the automatic opening and closing function of the curtain. When the motor assembly module 20 in the present application is assembled with the end box 10, one end of the motor sleeve 21 is inserted into the end box 10, the end of the motor sleeve 21 is butted against the end box 10, the motor sleeve 21 is rotated, the relative axial movement of the motor sleeve 21 and the end box 10 is limited by the first limiting assembly 50, and the relative circumferential rotation of the motor sleeve 21 and the end box 10 is limited by the second limiting assembly 60, so as to realize the quick installation and disassembly function of the end box 10 and the motor assembly module 20. In the present application, the cumbersome screw fastening mode is avoided, the problem of quick installation and disassembly under single-person operation is effectively solved, especially in the case of frequent adjustment or maintenance, the installation and disassembly of the motor assembly module 20 and the end box 10 can be easily completed by one hand, the disassembly steps are greatly simplified, and the disassembly efficiency is improved; the installation convenience and economy of the electric curtain driving device are significantly improved.

[0057] The embodiments of the specific implementation mode are the preferred embodiments of the present application, and do not limit the protection scope of the present application. The same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A drive device of an electric curtain, comprising an end box (10) for connecting with a curtain rail and a motor assembly module (20) for driving a curtain belt to run; the motor assembly module (20) comprises a motor sleeve (21) and a drive motor (22) fixed in the motor sleeve (21); characterized in that one end of the motor sleeve (21) is inserted into the end box (10), and the motor sleeve (21) and the end box (10) are provided with a first limiting assembly (50) for limiting the relative axial movement of the two and a second limiting assembly (60) for limiting the relative circumferential rotation of the two.

2. The drive arrangement for a motorized window treatment of claim 1, wherein, the first limiting assembly (50) comprises a locking groove (51) opened on the outer circumferential surface of the end of the motor sleeve (21) and a limiting protrusion (52) provided on the inner wall of the end of the end box (10); the locking groove (51) comprises a vertical groove (511) extending along the axial direction of the end surface of the motor sleeve (21) and a horizontal groove (512) located on the circumferential surface of the motor sleeve (21) along the circumferential direction, one end of the horizontal groove (512) being communicated with one end of the vertical groove (511); the limiting protrusion (52) can move through the vertical groove (511) into the horizontal groove (512) and form axial limiting of the motor sleeve (21) and the end box (10).

3. The drive arrangement for a motorized window treatment of claim 2, wherein, there are at least two groups of the locking groove (51) and the limiting protrusion (52), and several groups of the locking groove (51) and the limiting protrusion (52) are symmetrically or intervally distributed along the circumferential direction of the motor sleeve (21); each group of the locking groove (51) corresponds to one limiting protrusion (52).

4. The drive arrangement for a motorized window treatment of claim 2, wherein, the end box (10) has a cylindrical connecting part (11) with a cylindrical mounting hole (111) opened thereon, the end of the motor sleeve (21) has a thin shaft part (211) for being inserted into the cylindrical mounting hole (111), the body of the motor sleeve (21) and the junction of the thin shaft part (211) form an abutting step surface (212) for abutting against the end surface of the cylindrical connecting part (11), the limiting protrusion (52) is located on the hole wall of the cylindrical mounting hole (111) of the cylindrical connecting part (11), and the locking groove (51) is located on the outer circumferential surface of the thin shaft part (211).

5. A drive arrangement for a motorized window treatment as defined in claim 4, wherein, the limiting protrusion (52) is a cuboid, the length direction of the limiting protrusion (52) is along the circumferential direction of the inner wall of the cylindrical connecting part (11), and the width direction of the limiting protrusion (52) is along the axial direction of the cylindrical connecting part (11); the width of the vertical groove (511) is greater than the width of the horizontal groove (512), and the width of the vertical groove (511) matches the length of the limiting protrusion (52), and the width of the horizontal groove (512) matches the width of the limiting protrusion (52).

6. A drive arrangement for a motorized window treatment as defined in claim 5, wherein, a guide inclined surface inclinedly extending from the groove wall of the vertical groove (511) to the end surface of the motor sleeve (21) is arranged at the slot opening of the vertical groove (511), and the guide inclined surfaces on both sides of the vertical groove (511) form a guide opening (513).

7. The drive arrangement for a motorized window treatment of claim 1, wherein, The second limiting component (60) comprises a clamping groove (61) arranged on the inner wall of the end of the motor sleeve (21) and a clamping piece (62) arranged on the end box (10), one side of the clamping piece (62) is provided with a clamping protrusion (621) capable of being embedded in the clamping groove (61), and the end box (10) is further provided with an elastic piece (63) for pushing the clamping protrusion (621) into the clamping groove (61), and pressing the clamping piece (62) can make the clamping protrusion (621) overcome the elastic force of the elastic piece (63) and thus disengage from the clamping groove (61).

8. The drive arrangement for a motorized window treatment of claim 7, wherein, The end box (10) is provided with a mounting sliding groove (12), and the clamping piece (62) is slidingly arranged in the mounting sliding groove (12), the clamping piece (62) is provided with a mounting cavity (622), the end box (10) is fixedly provided with a mounting seat (64), the mounting seat (64) is provided with a first connecting column (65) facing the clamping piece (62), the mounting cavity (622) is provided with a second connecting column (66) opposite to the first connecting column (65), and the elastic piece (63) is a spiral spring and the two ends of the elastic piece (63) are sleeved on the first connecting column (65) and the second connecting column (66) respectively.

9. The drive arrangement for a motorized window treatment of claim 7, wherein, The end cover (40) is fixedly arranged at the end of the motor sleeve (21), the end cover (40) is provided with a through hole (41) in the middle, and the outer circumferential surface of the end cover (40) is provided with a clamping groove (42) corresponding to the clamping groove (61), the clamping protrusion (621) clamped in the clamping groove (61) is also clamped in the clamping groove (42).

10. The drive arrangement for a motorized window treatment of claim 9, wherein, The end box (10) comprises an upper end shell (14) and a lower end shell (15) which are buckled and fixedly connected, the upper end shell (14) and the lower end shell (15) have a cavity (13) therebetween, the cavity (13) is provided with a belt winding end head (30), the motor assembly module (20) further comprises a speed reducer (23) fixedly arranged in the motor sleeve (21), the output shaft of the driving motor (22) is connected with the input shaft of the speed reducer (23), and the output shaft of the speed reducer (23) passes through the through hole (41) and is connected with the belt winding end head (30).

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