Electric drive connecting structure of electric curtain

Abstract

The utility model relates to an electric drive connecting structure of an electric curtain, and relates to the technical field of electric curtains. The electric drive connecting structure of the electric curtain comprises a spline tooth fixedly arranged on an output shaft of a driving motor and a spline groove fixedly formed in the input end of a speed reducer. The spline tooth is inserted into the spline groove, and circumferential limiting is formed between the output shaft of the driving motor and the input end of the speed reducer. The electric drive connecting structure further comprises a first clamping ring fixedly arranged on the driving motor and a second clamping ring fixedly arranged at the end of the speed reducer, and the first clamping ring is arranged on an output shaft of the driving motor in a sleeving mode. The second clamping ring is fixedly connected to the end part of a shell of the speed reducer; and buckle assemblies which can be clamped with each other to form fixed connection are arranged between the first clamping ring and the second clamping ring. According to the technical scheme, connection between the driving motor and the speed reducer in the electric curtain is more stable and reliable, and vibration noise in torque transmission is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric window curtains, in particular to an electric drive connection structure of an electric window curtain. BACKGROUND

[0002] As a convenient home device, electric window curtains have been widely used in homes and offices. With the development of smart home technology, electric window curtains not only improve the convenience of life, but also enhance the comfort and aesthetics of the living environment.

[0003] Electric window curtains usually realize the automatic opening and closing function of the window curtain through electric drive. The existing electric window curtain usually includes a window curtain track, a window curtain belt arranged on the window curtain track, a window curtain connected to the window curtain belt, an end box for connecting with the window curtain track, and a drive motor for driving the window curtain belt to run. The drive motor is installed in a motor sleeve, and a speed reducer is also needed to reduce the rotating speed of the drive motor.

[0004] In related technologies, in order to realize the effective connection of the drive motor and the speed reducer, a plug-in connection is usually adopted. Specifically, the output shaft of the drive motor is connected to the speed reducer through a simple plug-in structure. This connection method is simple to operate, easy to install and disassemble. In addition, some designs use threaded connection, buckle connection and other methods to improve the stability of the connection. Although these conventional means can meet the basic use requirements to some extent, there are still some deficiencies in actual application.

[0005] The existing plug-in connection relationship is relatively simple, and the gap between the two rotating shafts is large. During the operation of the drive motor, a large vibration will be generated, which will cause noise at the connection part and affect the user experience. At the same time, the vibration between the two will cause loosening and wear after a long time of use, affecting the stability and reliability of the entire device. CONTENT OF THE INVENTION

[0006] In order to reduce the noise in the power transmission process of the drive motor of the electric window curtain and improve the stability and reliability of its operation, the present application provides an electric drive connection structure of an electric window curtain.

[0007] The electric drive connection structure of the electric window curtain provided by the present application adopts the following technical scheme:

[0008] An electric drive connection structure of an electric window curtain, comprising a spline tooth fixed on the output shaft of the drive motor and a spline groove fixed on the input end of the speed reducer, the spline tooth is inserted into the spline groove and forms a circumferential limit between the output shaft of the drive motor and the input end of the speed reducer;

[0009] The electric drive connection structure further comprises a first clamping ring fixed on the driving motor and a second clamping ring fixed on the end of the speed reducer, the first clamping ring is sleeved on the output shaft of the driving motor, the second clamping ring is fixedly connected to the end of the housing of the speed reducer, and a clasp assembly capable of being clamped to form a fixed connection is arranged between the first clamping ring and the second clamping ring.

[0010] By adopting the above technical scheme, the output shaft of the driving motor and the input end of the speed reducer are matched through the spline teeth and the spline grooves to realize circumferential limiting connection, so that the torque of the driving motor is stably and reliably transmitted to the speed reducer for driving the opening and closing of the curtain. In the present application, the first clamping ring is arranged on the driving motor, the second clamping ring is arranged on the end of the speed reducer, and the axial fixed connection of the driving motor and the speed reducer is realized through the clasp assembly between the two, so that the driving motor and the speed reducer are stably fixed together, the whole structure is tightly connected, the transmission is stable and reliable, the vibration of the parts is effectively reduced, and the noise during the operation of the driving motor is reduced. At the same time, the stability of the whole device is further enhanced, and the reliability and safety during long-time operation are ensured.

[0011] Optionally, the clasp assembly comprises a first barb clamping key arranged on the first clamping ring and a second barb clamping key arranged on the second clamping ring, the first barb clamping key extends along the axial direction of the first clamping ring towards the second clamping ring, and the second barb clamping key extends along the axial direction of the second clamping ring towards the first clamping ring.

[0012] A plurality of protrusions are arranged on the outer circumferential surface of the first clamping ring and spaced apart along the circumferential direction, the protrusions abut against the outer side surface of the second clamping ring, a first clamping groove is formed between every two adjacent protrusions, and the second barb clamping key can be clamped in the bottom of the corresponding first clamping groove.

[0013] The middle part of the second clamping ring has a through hole, a second clamping groove is arranged on the hole wall of the through hole, and the first barb clamping key can pass through the corresponding second clamping groove and be clamped on the side of the second clamping ring away from the driving motor.

[0014] By adopting the above technical scheme, the first barb clamping key and the second barb clamping key are used to realize the firm connection between the driving motor and the speed reducer, the axial limiting of the two is ensured, and loosening or noise caused by vibration is prevented. At the same time, the design of the protrusions further enhances the stability of the connection, effectively limits the axial rotation of the driving motor and the speed reducer after being fixed, and improves the running stability and reliability of the whole system.

[0015] Optionally, the number of the first and second hooking keys and the first and second clamping grooves is at least two, the first hooking keys and the first clamping grooves are uniformly distributed along the circumference of the first clamping ring, and the second hooking keys and the second clamping grooves are uniformly distributed along the circumference of the second clamping ring; the first and second hooking keys are distributed staggered along the circumference of the first and second clamping rings.

[0016] By adopting the above technical solution, the number of the first and second hooking keys and the first and second clamping grooves is multiple, and they are uniformly distributed along the circumference, which makes the connection more stable, the stress more uniform, reduces the local stress concentration, and improves the reliability and durability of the connection. At the same time, the first and second hooking keys are distributed staggered along the circumference, which further enhances the stability of the connection, avoids the risk of overall disconnection caused by single-point failure, and thus ensures the connection between the driving motor and the reducer to be more stable, effectively reducing the vibration and noise of the driving motor during operation.

[0017] Optionally, the first hooking key comprises a first straight connecting part and a first hooking part, the first hooking part is located outside the end of the first straight connecting part, the outside of the first hooking part has a first guide inclined surface extending from the end face of the first straight connecting part to the peripheral surface of the first hooking part, and the end face of the first hooking part and the outside surface of the first straight connecting part form a first abutting step surface for abutting against the side surface of the second clamping ring.

[0018] The second hooking key comprises a second straight connecting part and a second hooking part, the second hooking part is located inside the end of the second straight connecting part, the side surface of the second hooking part towards the center of the second clamping ring has a second guide inclined surface extending from the end face of the second straight connecting part to the side surface of the second hooking part, and the end face of the second hooking part and the inside surface of the second straight connecting part form a second abutting step surface for abutting against the bottom of the first clamping groove.

[0019] By adopting the above technical solution, when assembling and connecting the driving motor and the reducer, the first hooking key is aligned with the second clamping groove, the second hooking key is aligned with the first clamping groove, the first and second clamping rings are pushed to move relative to each other, the first and second straight connecting parts are deformed by extruding the first and second guide inclined surfaces, so that the first hooking part of the first hooking key can smoothly enter the second clamping groove, and the second hooking part of the second hooking key can smoothly enter the first clamping groove, realizing easy assembly of the first and second hooking keys and effectively preventing the first and second hooking keys from disengaging, and ensuring the stability and reliability of the connection.

[0020] Optionally, the driving motor comprises a shell, an end cover detachably arranged at one end of the shell towards the speed reducer, a stator fixed on the inner wall of the shell, an output shaft of the driving motor penetrating through the shell along the central axis of the shell, a rotor fixed on the output shaft and the stator sleeved outside the rotor, the stator and the rotor being spaced apart, the first clamping ring having a shaft sleeve extending into the shell at the side away from the speed reducer, the shaft sleeve being located between the stator and the rotor, a wedge-shaped limiting block arranged on the outer circumferential surface of the shaft sleeve and abutting against the side of the end cover away from the speed reducer, and the first clamping ring abutting against the side of the end cover towards the speed reducer.

[0021] By adopting the above technical scheme, the relative positions between the output shaft of the driving motor and the stator and the rotor are more accurate, thereby ensuring the stability and reliability of the driving motor in operation. Meanwhile, the detachable design of the end cover facilitates the assembly, maintenance and replacement of the internal components of the driving motor. The design of the shaft sleeve effectively enhances the overall stability of the connecting structure. The arrangement of the wedge-shaped limiting block further improves the fitting accuracy between the shaft sleeve and the end cover, thereby ensuring that the driving motor will not loosen during long-time use, thereby reducing noise and improving user experience.

[0022] Optionally, the shaft sleeve is provided with an open slot extending inward along the axial direction of the shaft sleeve from the end face close to the first clamping ring, the wedge-shaped limiting block is located in the open slot and connected to the bottom of the open slot, and the outer side surface of the wedge-shaped limiting block extends outward from the bottom to the opening of the open slot.

[0023] By adopting the above technical scheme, the design of the wedge-shaped limiting block on the shaft sleeve makes the connection and assembly between the shaft sleeve and the shell of the driving motor convenient and fast, and the connection is more stable.

[0024] Optionally, a through hole is formed in the middle of the end cover, the shaft sleeve penetrates through the through hole, a plurality of positioning holes are arranged around the through hole on the end cover, and the end portion of the stator is provided with a positioning pin inserted into the corresponding positioning hole.

[0025] By adopting the above technical scheme, the cooperation of the through hole in the middle of the end cover and the shaft sleeve enables the output shaft of the driving motor to maintain a stable position in the axial direction, thereby effectively preventing displacement caused by vibration. Meanwhile, the positioning holes arranged around the through hole on the end cover cooperate with the positioning pin at the end portion of the stator, thereby ensuring the accurate positioning of the end cover and the stator in the radial direction and limiting the circumferential rotation of the two, further improving the stability and reliability of the entire electric drive connecting structure and reducing the noise generated by the driving motor in operation.

[0026] Optionally, the speed reducer is a two-stage planetary speed reducer, the second clamping ring is integrally formed with the shell of the speed reducer, a first-stage central gear of the speed reducer is connected with an input shaft, the input shaft is located in the through hole of the second clamping ring, and the spline groove is located in the input shaft.

[0027] By adopting the technical scheme, the compactness and reliability of the overall structure are enhanced.

[0028] Optionally, a first limiting plane is formed on the output shaft of the driving motor, a connecting hole is formed in the middle of the spline tooth, the spline tooth is sleeved on the output shaft of the driving motor, and the second limiting plane is arranged on the inner wall of the connecting hole of the spline tooth and abuts against the first limiting plane.

[0029] By adopting the technical scheme, the relative position between the output shaft of the driving motor and the spline tooth is effectively limited, rotation deviation of the two during transmission is prevented, the stability and reliability of the entire electric drive connection structure are improved, torque transmission is ensured to be stable and reliable, the spline tooth and the output shaft are ensured to be accurately connected, and loosening and noise problems caused by vibration are avoided.

[0030] In summary, the present application has at least one of the following beneficial technical effects:

[0031] 1. In the present application, the first clamping ring is arranged on the driving motor, the second clamping ring is arranged at the end of the speed reducer, the axial fixed connection of the driving motor and the speed reducer is realized through the buckle assembly between the two, so that the driving motor and the speed reducer are stably and fixedly connected together, the structure is tightly connected, transmission is stable and reliable, vibration of the parts is effectively reduced, and noise during operation of the driving motor is reduced.

[0032] 2. In the present application, the stability of the entire device is enhanced through the multiple limiting structures, and the reliability and safety of the electric window curtain during long-time operation are ensured.

[0033] 3. In the present application, the first barb key, the second barb key and the wedge-shaped limiting block are designed, so that the assembly and connection of the parts are conveniently and quickly realized, and the stability and reliability of the connection are ensured. DETAILED DESCRIPTION

[0034] Figure 1 is a schematic diagram of the three-dimensional structure of the electric window curtain with the electric drive device in the present application.

[0035] Figure 2 is a schematic diagram of the cross-sectional structure of the electric window curtain with the electric drive device in the present application.

[0036] Figure 3 is a schematic diagram of the explosion structure of the electric window curtain with the electric drive device in the present application.

[0037] Figure 4 is the three-dimensional structural schematic diagram of the driving motor in the application.

[0038] Figure 5 is the exploded structural schematic diagram of the speed reducer in the application.

[0039] Figure 6 is the three-dimensional structural schematic diagram of the first clamping ring in the application.

[0040] Figure 7 is the three-dimensional structural schematic diagram of the first clamping ring and the second clamping ring when assembled in the application.

[0041] Figure 8 is the sectional structural schematic diagram of the first clamping ring and the second clamping ring when assembled in the application.

[0042] Figure 9 is the sectional structural schematic diagram of the driving motor in the application.

[0043] in the figure:

[0044] 10, driving motor; 11, output shaft; 111, first limiting plane; 12, spline tooth; 121, connecting hole; 122, second limiting plane; 13, shell; 14, end cover; 141, through hole; 142, positioning hole; 15, stator; 151, positioning pin; 16, rotor;

[0045] 20, speed reducer; 21, input shaft; 211, spline groove; 22, shell; 23, primary central gear;

[0046] 30, first clamping ring; 31, first barbed clamping key; 311, first straight connecting part; 312, first barbed part; 3121, first guide inclined surface; 3122, first abutting step surface; 32, protruding block; 33, first clamping groove; 34, shaft sleeve; 341, wedge-shaped limiting block; 342, open slot;

[0047] 40, second clamping ring; 41, second barbed clamping key; 411, second straight connecting part; 412, second barbed part; 4121, second guide inclined surface; 4122, second abutting step surface; 42, through hole; 43, second clamping groove;

[0048] 50, end box; 51, cavity;

[0049] 60, belt winding end head;

[0050] 70, motor sleeve. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings Figure 1 - the drawings Figure 9The technical solutions in the embodiments of the present application are clearly and completely described, and the described embodiments are only possible technical implementations of the present application, and are not all possible implementations. Those skilled in the art can certainly combine the embodiments of the present application to obtain other embodiments without creative labor, and these embodiments are also within the protection scope of the present application.

[0052] With reference to Figure 1 , Figure 2 and Figure 3 , the electric window curtain comprises a curtain rail, a curtain belt arranged on the curtain rail, a curtain connected to the curtain belt, an end box 50 for being connected to the curtain rail, and a driving motor 10 for driving the curtain belt to run. The end box 50 is installed at one end of the curtain rail, a motor sleeve 70 is vertically arranged at one end of the end box 50, and the upper end of the motor sleeve 70 is connected to the end box 50. The driving motor 10 is vertically upwardly installed in the motor sleeve 70, and a speed reducer 20 is further arranged in the motor sleeve 70. The speed reducer 20 is fixedly arranged above the driving motor 10, the output shaft 11 of the driving motor 10 is connected to the input end of the speed reducer 20, the end box 50 has a cavity 51, and a belt winding end head 60 is arranged in the cavity 51. The output shaft 11 of the speed reducer 20 is connected to the belt winding end head 60, one end of the curtain belt is sleeved on the belt winding end head 60, and the speed reducer 20 reduces the rotating speed of the driving motor 10. The belt winding end head 60 is driven to rotate by the driving motor 10 and the speed reducer 20, so as to drive the curtain belt to run forward and backward, and the automatic opening and closing function of the curtain is realized.

[0053] With reference to Figure 4 and Figure 5As shown, the electric drive connection structure of the electric curtain in the application is mainly the connection structure of the drive motor 10 and the speed reducer 20 arranged in the motor sleeve 70, which includes the spline tooth 12 fixed on the output shaft 11 of the drive motor 10, the spline groove 211 fixed on the input end of the speed reducer 20, the first clamping ring 30 fixed on the drive motor 10, and the second clamping ring 40 fixed on the end of the speed reducer 20; the speed reducer 20 in the application can be a two-stage planetary reducer, the second clamping ring 40 is integrally formed with the shell 22 of the speed reducer 20, the input shaft 21 is connected to the primary central gear 23 of the speed reducer 20, the middle part of the second clamping ring 40 has a through hole 42, and the input shaft 21 is located in the through hole 42 of the second clamping ring 40; the spline groove 211 is located in the input shaft 21. The middle part of the spline tooth 12 is provided with a connecting hole 121, the spline tooth 12 is sleeved on the output shaft 11 of the drive motor 10 and tightly matched, further, the output shaft 11 of the drive motor 10 is provided with a first limiting plane 111, and the inner wall of the connecting hole 121 of the spline tooth 12 has a second limiting plane 122 abutting against the first limiting plane 111; in this way, the relative position between the output shaft 11 of the drive motor 10 and the spline tooth 12 is effectively limited, preventing rotation deviation of the two during transmission, improving the stability and reliability of the entire electric drive connection structure, ensuring smooth and reliable torque transmission, and ensuring accurate butt joint of the spline tooth 12 and the output shaft 11, avoiding loosening and noise problems caused by vibration. The spline tooth 12 is inserted into the spline groove 211, and the output shaft 11 of the drive motor 10 and the input end of the speed reducer 20 form circumferential limiting; the first clamping ring 30 is sleeved on the output shaft 11 of the drive motor 10; the second clamping ring 40 is fixed to the end of the shell 22 of the speed reducer 20; the first clamping ring 30 and the second clamping ring 40 are provided with a buckle assembly capable of being clamped to form fixed connection.

[0054] Referring to Figure 4 and Figure 5As shown, the buckle assembly in the present application includes a first barbed catch 31 arranged on the first clamping ring 30 and a second barbed catch 41 arranged on the second clamping ring 40; the first barbed catch 31 extends along the axial direction of the first clamping ring 30 towards the second clamping ring 40, and the second barbed catch 41 extends along the axial direction of the second clamping ring 40 towards the first clamping ring 30; a plurality of protrusions 32 are arranged on the outer circumferential surface of the first clamping ring 30 at intervals along the circumferential direction thereof, and the protrusions 32 abut against the outer side surface of the second clamping ring 40; a first clamping groove 33 is formed between each adjacent two protrusions 32, and the second barbed catch 41 can be clamped at the bottom of the corresponding first clamping groove 33; a second clamping groove 43 is formed on the hole wall of the through hole 42; the first barbed catch 31 can pass through the corresponding second clamping groove 43 and be clamped on the side of the second clamping ring 40 away from the driving motor 10. The number of the first barbed catch 31, the second barbed catch 41, the first clamping groove 33 and the second clamping groove 43 is at least two, for example, it can be three; the first barbed catch 31 and the first clamping groove 33 are uniformly distributed along the circumferential direction of the first clamping ring 30, and the second barbed catch 41 and the second clamping groove 43 are uniformly distributed along the circumferential direction of the second clamping ring 40; the first barbed catch 31 and the second barbed catch 41 are distributed staggered in the circumferential direction of the first clamping ring 30 and the second clamping ring 40. The first barbed catch 31 and the second barbed catch 41 are used to realize the firm connection between the driving motor 10 and the speed reducer 20, which ensures the axial positioning of the two, prevents loosening or noise caused by vibration. At the same time, the design of the protrusions 32 further enhances the stability of the connection, effectively limits the axial rotation of the driving motor 10 and the speed reducer 20 after being fixed, and improves the running stability and reliability of the whole system. The number of the first barbed catch 31, the second barbed catch 41, the first clamping groove 33 and the second clamping groove 43 is multiple, and they are uniformly distributed along the circumferential direction, which makes the connection more stable, the stress more uniform, reduces the local stress concentration, and improves the reliability and durability of the connection. At the same time, the first barbed catch 31 and the second barbed catch 41 are distributed staggered in the circumferential direction, which further enhances the stability of the connection, avoids the risk of overall disconnection caused by single point failure, and thus ensures the connection between the driving motor 10 and the speed reducer 20 to be more firm, effectively reducing the vibration and noise of the driving motor 10 during operation.

[0055] Reference Figure 6 and Figure 7As shown, the first barb key 31 comprises a first straight connecting part 311 and a first barb part 312, the first barb part 312 is located outside the end of the first straight connecting part 311; the outside of the first barb part 312 has a first guide inclined surface 3121 extending obliquely from the end face of the first straight connecting part 311 to the peripheral surface of the first barb part 312, and the end face of the first barb part 312 and the outside surface of the first straight connecting part 311 form a first abutting step surface 3122 for abutting against the side surface of the second clamping ring 40; refer to Figure 5 and Figure 7 As shown, the second barb key 41 comprises a second straight connecting part 411 and a second barb part 412, the second barb part 412 is located inside the end of the second straight connecting part 411; the side surface of the second barb part 412 towards the center of the second clamping ring 40 has a second guide inclined surface 4121 extending obliquely from the end face of the second straight connecting part 411 to the side surface of the second barb part 412, and the end face of the second barb part 412 and the inside surface of the second straight connecting part 411 form a second abutting step surface 4122 for abutting against the bottom of the first clamping groove 33. When assembling the driving motor 10 and the speed reducer 20, the first barb key 31 is aligned with the second clamping groove 43, the second barb key 41 is aligned with the first clamping groove 33, the first clamping ring 30 and the second clamping ring 40 are pushed to move relative to each other, and the first straight connecting part 311 and the second straight connecting part 411 are deformed obliquely by extruding the first guide inclined surface 3121 and the second guide inclined surface 4121, so that the first barb part 312 of the first barb key 31 can smoothly enter the second clamping groove 43, and the second barb part 412 of the second barb key 41 can smoothly enter the first clamping groove 33, achieving easy assembly of the first barb key 31 and the second barb key 41, effectively preventing the first barb key 31 and the second barb key 41 from disengaging, and ensuring the stability and reliability of the connection.

[0056] Further, refer to Figure 2 and Figure 3 As shown, the driving motor 10 in the present application comprises a shell 13, one end of the shell 13 towards the speed reducer 20 is detachably provided with an end cover 14; a stator 15 is fixed on the inner wall of the shell 13, the output shaft 11 of the driving motor 10 is arranged along the central axis of the shell 13 and penetrates the shell 13, the rotor 16 is fixed on the output shaft 11 and the stator 15 is sleeved outside the rotor 16, the stator 15 and the rotor 16 are spaced apart, and the side of the first clamping ring 30 away from the speed reducer 20 has a shaft sleeve 34 extending into the shell 13 and located between the stator 15 and the rotor 16; refer to Figure 7 、 Figure 8 and Figure 9As shown, the outer circumferential surface of the shaft sleeve 34 is provided with a wedge-shaped limiting block 341 abutting against the side of the end cover 14 away from the speed reducer 20; the first clamping ring 30 is attached to the side of the end cover 14 facing the speed reducer 20. The shaft sleeve 34 is provided with an opening groove 342 extending axially inward along the shaft sleeve 34 from the end surface close to the first clamping ring 30, and the wedge-shaped limiting block 341 is located in the opening groove 342 and connected to the groove bottom of the opening groove 342; the outer side surface of the wedge-shaped limiting block 341 extends outwardly from the groove bottom to the groove opening of the opening groove 342; the end cover 14 is provided with a through hole 141 in the middle, the shaft sleeve 34 passes through the through hole 141, and a plurality of positioning holes 142 are arranged around the through hole 141 on the end cover 14, and the end portion of the stator 15 is provided with a positioning pin 151 inserted into the corresponding positioning hole 142; the cooperation of the through hole 141 in the middle of the end cover 14 and the shaft sleeve 34 enables the output shaft 11 of the driving motor 10 to be kept in a stable position in the axial direction, effectively preventing displacement caused by vibration. At the same time, the positioning holes 142 arranged around the through hole 141 on the end cover 14 cooperate with the positioning pin 151 at the end portion of the stator 15 to ensure accurate positioning of the end cover 14 and the stator 15 in the radial direction and limit the circumferential rotation of the two, further improving the stability and reliability of the entire electric drive connection structure and reducing the noise generated when the driving motor 10 is working.

[0057] The implementation principle is as follows: in the present application, the output shaft 11 of the driving motor 10 and the input end of the speed reducer 20 are connected in the circumferential direction through the cooperation of the spline teeth 12 and the spline groove 211, thereby ensuring that the torque of the driving motor 10 is stably and reliably transmitted to the speed reducer 20 for driving the opening and closing of the curtain. In the present application, the first clamping ring 30 is arranged on the driving motor 10, and the second clamping ring 40 is arranged at the end portion of the speed reducer 20, and the axial fixed connection between the driving motor 10 and the speed reducer 20 is realized through the clamping assembly therebetween, so that the driving motor 10 and the speed reducer 20 are stably and fixedly connected together, the entire structure is tightly connected, the transmission is stable and reliable, the vibration of the parts is effectively reduced, and the noise generated when the driving motor 10 is working is reduced. At the same time, the stability of the entire device is further enhanced, and the reliability and safety of long-time operation are ensured.

[0058] The embodiments of the specific implementation are the preferred embodiments of the present application, and do not limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An electric drive connection structure of an electric window curtain, comprising a spline tooth (12) fixed on an output shaft (11) of a drive motor (10) and a spline groove (211) fixed on an input end of a speed reducer (20), the spline tooth (12) being inserted into the spline groove (211) and limiting the output shaft (11) of the drive motor (10) and the input end of the speed reducer (20) in the circumferential direction. characterized in that The electric drive connection structure further comprises a first clamping ring (30) fixed on the drive motor (10) and a second clamping ring (40) fixed on an end of the speed reducer (20), the first clamping ring (30) being sleeved on the output shaft (11) of the drive motor (10), the second clamping ring (40) being fixed to an end of a housing (22) of the speed reducer (20), and a buckle assembly capable of being clamped to form a fixed connection being arranged between the first clamping ring (30) and the second clamping ring (40).

2. The electrical drive connection structure of a motorized window treatment according to claim 1, wherein, The buckle assembly comprises a first barb clamping key (31) arranged on the first clamping ring (30) and a second barb clamping key (41) arranged on the second clamping ring (40), the first barb clamping key (31) extending in the axial direction of the first clamping ring (30) towards the second clamping ring (40), and the second barb clamping key (41) extending in the axial direction of the second clamping ring (40) towards the first clamping ring (30). A plurality of protrusions (32) are arranged on the outer circumferential surface of the first clamping ring (30) in the circumferential direction, the protrusions (32) abutting against the outer side surface of the second clamping ring (40), a first clamping groove (33) being formed between every two adjacent protrusions (32), and the second barb clamping key (41) being capable of being clamped in the bottom of the corresponding first clamping groove (33). The middle part of the second clamping ring (40) has a through hole (42), a second clamping groove (43) being arranged on the hole wall of the through hole (42), and the first barb clamping key (31) being capable of passing through the corresponding second clamping groove (43) and being clamped on the side of the second clamping ring (40) away from the drive motor (10).

3. The electrical drive connection structure of a motorized window treatment according to claim 2, wherein, The number of the first barb clamping key (31), the second barb clamping key (41), the first clamping groove (33) and the second clamping groove (43) is at least two, the first barb clamping key (31) and the first clamping groove (33) being uniformly distributed in the circumferential direction of the first clamping ring (30), the second barb clamping key (41) and the second clamping groove (43) being uniformly distributed in the circumferential direction of the second clamping ring (40), and the first barb clamping key (31) and the second barb clamping key (41) being distributed in the circumferential direction of the first clamping ring (30) and the second clamping ring (40) in a staggered manner.

4. An electrical drive connection structure for an electric window blind according to claim 2 or 3, characterised in that, The first barb key (31) comprises a first straight connecting part (311) and a first barb part (312), the first barb part (312) is located outside the end of the first straight connecting part (311); the outside of the first barb part (312) has a first guide inclined surface (3121) extending obliquely from the end surface of the first straight connecting part (311) to the peripheral surface of the first barb part (312), and the end surface of the first barb part (312) and the outside surface of the first straight connecting part (311) form a first abutting step surface (3122) for abutting against the side surface of the second clamping ring (40); The second barb key (41) comprises a second straight connecting part (411) and a second barb part (412), the second barb part (412) is located inside the end of the second straight connecting part (411); the side surface of the second barb part (412) towards the center of the second clamping ring (40) has a second guide inclined surface (4121) extending obliquely from the end surface of the second straight connecting part (411) to the side surface of the second barb part (412), and the end surface of the second barb part (412) and the inside surface of the second straight connecting part (411) form a second abutting step surface (4122) for abutting against the bottom of the first clamping groove (33).

5. The electrical drive connection structure of a motorized window treatment according to claim 2, wherein, The driving motor (10) comprises a shell (13), one end of the shell (13) towards the reducer (20) is detachably provided with an end cover (14); a stator (15) is fixed on the inner wall of the shell (13), the output shaft (11) of the driving motor (10) penetrates through the shell (13) along the central axis of the shell (13), a rotor (16) is fixed on the output shaft (11) and the stator (15) is sleeved outside the rotor (16), the stator (15) and the rotor (16) are spaced apart, the first clamping ring (30) has a shaft sleeve (34) extending into the shell (13) on the side away from the reducer (20), and the shaft sleeve (34) is located between the stator (15) and the rotor (16); a wedge-shaped limiting block (341) is arranged on the peripheral surface of the shaft sleeve (34) and abuts against the side of the end cover (14) away from the reducer (20); the first clamping ring (30) abuts against the side of the end cover (14) towards the reducer (20).

6. The electrical drive connection structure of a motorized window treatment according to claim 5, wherein, The shaft sleeve (34) has an open groove (342) extending axially inward from the end surface close to the first clamping ring (30), the wedge-shaped limiting block (341) is located in the open groove (342) and connected to the groove bottom of the open groove (342); the outside surface of the wedge-shaped limiting block (341) extends obliquely outward from the groove bottom to the groove opening of the open groove (342).

7. The electrical drive connection structure of a motorized window treatment according to claim 5, wherein, A through hole (141) is formed in the middle of the end cover (14), the shaft sleeve (34) penetrates through the through hole (141), a plurality of positioning holes (142) are arranged on the end cover (14) around the through hole (141), and the end of the stator (15) has a positioning pin (151) inserted into the corresponding positioning hole (142).

8. The electrical drive connection structure of a motorized window treatment according to claim 2, wherein, The speed reducer (20) is a two-stage planetary speed reducer (20), the second clamping ring (40) is integrally formed with the shell (22) of the speed reducer (20), a primary central gear (23) of the speed reducer (20) is connected with an input shaft (21), the input shaft (21) is located in a through hole (42) of the second clamping ring (40); the spline groove (211) is located in the input shaft (21).

9. The electrical drive connection structure of a motorized window treatment according to claim 1, wherein, A first limiting plane (111) is arranged on an output shaft (11) of the driving motor (10), a connecting hole (121) is arranged in the middle of the spline tooth (12), the spline tooth (12) is sleeved on the output shaft (11) of the driving motor (10), and a second limiting plane (122) abutting against the first limiting plane (111) is arranged on the inner wall of the connecting hole (121) of the spline tooth (12).

Images