CN219387758U - Curtain control device - Google Patents

Abstract

The utility model relates to the technical field of intelligent home, in particular to a curtain control device. The application aims to solve the problem that the occupied space of the existing curtain controller is large. For this purpose, the curtain control device of the present application includes: the top of the shell is provided with a through hole; the first driving module comprises a first driving mechanism arranged in the shell and a first driving wheel connected with the first driving mechanism, the first curtain rope can pass through the through hole to be connected with the first driving wheel in a matching way, the first driving wheel is cylindrical, the first end of the first driving wheel is an open end, and the first driving wheel is sleeved on the first driving mechanism through the open end; the main control board is arranged in the shell and is connected with the first driving mechanism. Through being the tube-shape setting with first drive wheel and overlapping and establish at first actuating mechanism, can reduce the whole occupation space of first drive module assembly, be favorable to realizing the compact structure and the miniaturization of device.

Description

Curtain control device

Technical Field

The utility model relates to the technical field of intelligent home, in particular to a curtain control device.

Background

The lifting blind is one of a plurality of curtains and is used in office places. Most of lifting blinds in the current market are manually controlled in lifting, and the blinds are opened and closed by pulling a curtain rope (such as a pull rope) driven by a rotating shaft of the blinds. However, the manual pulling of the blind up and down has problems such as inconvenient use.

In order to realize automatic control, a curtain controller is arranged near a curtain rope of a blind in the prior market, the curtain rope is sleeved on a driving wheel driven by a motor, and the driving wheel drives the curtain rope to circulate positively and negatively when the motor is started, so that the blind is opened and closed. However, the connection of the driving wheel and the motor of the existing curtain controller occupies too large space, so that the overall structure of the product is large, and the user experience is affected.

Accordingly, there is a need in the art for a new solution to the above-mentioned problems.

Disclosure of Invention

To solve at least one of the above problems in the prior art, that is, to solve the problem of large occupied space of the existing curtain controller, the present application provides a curtain control device, which includes:

the top of the shell is provided with a through hole;

the first driving module comprises a first driving mechanism arranged in the shell and a first driving wheel connected with the first driving mechanism, a first curtain rope can pass through the through hole to be connected with the first driving wheel in a matched mode, the first driving wheel is cylindrical, the first end of the first driving wheel is an open end, and the first driving wheel is sleeved on the first driving mechanism through the open end;

The main control board is arranged in the shell and is connected with the first driving mechanism.

Through being the tube-shape setting with first drive wheel and overlapping and establish at first actuating mechanism, can reduce the whole occupation space of first drive module assembly, be favorable to realizing the compact structure and the miniaturization of device.

In the preferred technical scheme of the curtain control device, the first driving mechanism comprises a first bracket and a first motor, the first bracket is mounted on the inner wall of the shell, a first mounting position is formed on one side of the first bracket, the motor is mounted on the first mounting position, and the first driving wheel is sleeved on the first motor through the opening end.

In the preferred technical scheme of the curtain control device, the first driving module further comprises a first clutch, and the first motor is connected with the first driving wheel through the first clutch.

Through setting up first clutch, be favorable to realizing the automatic control of blind and manual control's switching, improve the practicality of device.

In the preferred technical scheme of the curtain control device, the first driving module further comprises a first micro control board, a first connecting groove is formed on the second side of the first bracket, the micro control board is fixedly connected to the first connecting groove, the first motor is connected with the first micro control board, and the first micro control board is connected with the main control board.

Through setting up first micro-control board to with first micro-control board setting in first spread groove, can improve first motor control accuracy, shorten wiring length, avoid the wiring to interfere.

In the preferred technical scheme of the curtain control device, the second end of the first driving wheel extends outwards to form a first rotating shaft, and the first rotating shaft is abutted against the inner wall of the shell or a hole groove formed in the inner wall of the shell; or alternatively

The second end of the first driving wheel extends outwards to form a first rotating shaft, and the first rotating shaft is abutted to the inner wall of the shell or a hole groove formed in the inner wall of the shell through a first bearing.

The first rotating shaft is abutted to the inner wall of the shell or the hole groove, so that the connection stability of the first driving wheel is improved. The first rotating shaft is abutted in the inner wall of the shell or the hole groove through the first bearing, so that friction between the first rotating shaft and the shell can be reduced, and the service life of the product is prolonged.

In the preferred technical scheme of the curtain control device, the curtain control device further comprises a second driving module, the second driving module comprises a second driving mechanism arranged in the shell and a second driving wheel connected with the second driving mechanism, a second curtain rope can pass through the through hole to be connected with the second driving wheel in a matched mode, the second driving wheel is cylindrical, the first end of the second driving wheel is an open end, the second driving wheel is sleeved on the second driving mechanism through the open end, and the main control board is connected with the second driving mechanism.

The second driving wheel is arranged in a cylindrical shape and sleeved on the second driving mechanism, so that the whole occupied space of the second driving module can be reduced, and the device is compact and miniaturized.

In the preferred technical scheme of the curtain control device, the second driving mechanism comprises a second bracket and a second motor, the second bracket is mounted on the inner wall of the shell, a second mounting position is formed on one side of the second bracket, the motor is mounted on the second mounting position, and the second driving wheel is sleeved on the second motor through the opening end.

In the preferred technical scheme of the curtain control device, the second driving module further comprises a second clutch, and the second motor is connected with the second driving wheel through the second clutch.

Through setting up the second clutch, be favorable to realizing the automatic control of blind and manual control's switching, improve the practicality of device.

In the preferred technical scheme of the curtain control device, the second driving module further comprises a second micro control board, a second connecting groove is formed in the second side of the second bracket, the micro control board is fixedly connected to the second connecting groove, the second motor is connected with the second micro control board, and the second micro control board is connected with the main control board.

Through setting up the second micro-control board to with second micro-control board setting in the second spread groove, can improve second motor control accuracy, shorten wiring length, avoid the wiring to interfere.

In the preferable technical scheme of the curtain control device, the second end of the second driving wheel extends outwards to form a second rotating shaft, and the second rotating shaft is abutted against the inner wall of the shell or a hole groove formed in the inner wall of the shell; or alternatively

The second end of the second driving wheel extends outwards to form a second rotating shaft, and the second rotating shaft is abutted to the inner wall of the shell or a hole groove formed in the inner wall of the shell through a second bearing.

The second rotating shaft is abutted to the inner wall of the shell or the hole groove, so that the connection stability of the second driving wheel is improved. The second rotating shaft is abutted in the inner wall of the shell or the hole groove through the second bearing, so that friction between the second rotating shaft and the shell can be reduced, and the service life of the product is prolonged.

Drawings

The present application is described below with reference to the accompanying drawings. In the accompanying drawings:

fig. 1 is a view of an installation position of a window shade control device of the present application;

FIG. 2 is an assembly view of the shade control device of the present application;

FIG. 3 is a partial exploded view of the window covering control device of the present application;

Fig. 4 is a structural diagram of the housing of the curtain control device of the present application with the third side cover removed;

fig. 5 is a structural view of a first side cover of the curtain control device of the present application;

fig. 6 is an assembly view of a second side cover and a third side cover of the window covering control device of the present application;

FIG. 7 is an assembly view of a power module of the window covering control device of the present application;

FIG. 8 is a front view of a power supply box of the window covering control device of the present application;

fig. 9 is a block diagram of a mounting base of the curtain control device of the present application;

fig. 10 is a block diagram of a curtain control device of the present application;

FIG. 11 is an assembly view of a first drive module of the window covering control device of the present application;

FIG. 12 is an exploded view of a first drive module of the window covering control device of the present application;

FIG. 13 is an assembly view of a second drive module of the window covering control device of the present application;

fig. 14 is an exploded view of a second driving module of the curtain control device of the present application.

List of reference numerals

100. A curtain control device;

10. a housing; 11. a first side cover; 111. a limit frame; 1111. an upper frame; 11111. limiting hole columns; 1112. a lower frame; 11121. a slideway; 12. a second side cover; 13. a third side cover; 131. a limit rib; 14. a first through hole; 15. a second through hole; 16. a third through hole; 17. a second mounting portion; 18. a mounting hole;

20. A first driving module; 21. a first driving mechanism; 211. a first bracket; 2111. a first mounting location; 2112. a limit groove; 21121. a slide block; 2113. a first connection groove; 212. a first motor; 22. a first driving wheel; 221. a first rim; 2211. a first rotating shaft; 222. an anti-slip cylinder; 23. a first bearing; 24. a first micro control board;

30. a second driving module; 31. a second driving mechanism; 311. a second bracket; 3111. a second mounting location; 3112. a second connecting groove; 312. a second motor; 32. a second driving wheel; 321. a second rim; 3211. a second rotating shaft; 322. a clamping groove; 33. a second bearing; 34. a second micro control board;

40. a mounting base; 41. a first riser; 411. a first mounting structure; 42. a second riser; 421. a first mounting groove; 422. a first opening; 423. a chute; 43. a bottom plate; 44. a first mounting portion; 45. a key; 46. a stop block; 461. a second opening; 462. a second mounting groove;

50. a power module; 51. a power supply box; 511. a second connection structure; 512. ribs; 513. an opening; 52. a power supply assembly; 521. a main control board; 522. a rechargeable battery;

60. an elastic member;

200. a blind; 300. a first shade cord; 400. and a second shade cord.

Detailed Description

Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present application, and are not intended to limit the scope of the present application. For example, while the present embodiment is described in connection with a blind, it is not intended to limit the scope of the application, and those skilled in the art may apply the application to other applications without departing from the principles of the application. For example, the present application may also be applied to other types of lift curtains, such as roller blinds.

It should be noted that, in the description of the present application, terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those skilled in the art as the case may be.

First, a curtain opening and closing apparatus of the present application will be described with reference to fig. 1 to 4.

As shown in fig. 1 to 4, in order to solve the problem of large occupied space of the existing curtain controller, the curtain control device 100 of the present application includes: the device comprises a shell 10, a first driving module 20 and a main control board 521. The top of the housing 10 is provided with a through hole. The first driving module 20 includes a first driving mechanism 21 disposed in the housing 10 and a first driving wheel 22 connected to the first driving mechanism 21, where the first curtain rope 300 can pass through the through hole and be connected to the first driving wheel 22 in a matching manner, the first driving wheel 22 is cylindrical, the first end of the first driving wheel 22 is an open end, and the first driving wheel 22 is sleeved on the first driving mechanism 21 through the open end. The main control board 521 is disposed in the housing 10, and the main control board 521 is connected to the first driving mechanism 21.

For example, in use, the housing 10 is secured in place adjacent a window covering, such as a wall or glass. The first blind cord 300 for controlling the elevation of the blind 200 is then coupled to the first driving wheel 22 in a matched manner. When the blind 200 needs to be controlled to lift, the first driving mechanism 21 is controlled to act, and the first driving mechanism 21 drives the first curtain rope 300 to circularly move through the first driving wheel 22 sleeved on the outer side of the first driving mechanism, so that the blind 200 is lifted.

The first driving wheel 22 is arranged in a cylindrical shape and sleeved on the first driving mechanism 21, so that the whole occupied space of the first driving module 20 can be reduced, and the device is beneficial to achieving the compact structure and miniaturization.

It will be appreciated by those skilled in the art that while the above description is described in connection with a liftable blind, this is not limiting and the first blind cord 300 may also be a blind cord that controls the angular rotation of the slats of the blind.

A preferred embodiment of the present application will now be described with reference to fig. 1 to 14, in combination with a blind which can be lifted and adjusted in the angle of the blades.

It will be appreciated by those skilled in the art that although the following embodiments of the present application are described in connection with the first driving module 20 and the second driving module 30 being disposed in the housing 10 at the same time, this is not intended to limit the scope of the present application, and in other embodiments, at least one driving module may be disposed.

As shown in fig. 1 and 4, in a preferred embodiment, the window covering control device 100 includes a housing 10, a first driving module 20, a second driving module 30, a mounting base 40, and a power module 50.

Referring to fig. 3, 5 and 6, the case 10 is generally formed as a rectangular parallelepiped with a hollow interior, and specifically includes a first side cover 11, a second side cover 12 and a third side cover 13, the first side cover 11 being located on a single side, the second side cover 12 being located on one side with the third side cover 13. Specifically, the lower portion of the first side cover 11 is fixedly connected (such as screwed, clamped or magnetically attracted connected) with the second side cover 12, the third side cover 13 is pivotally connected to the upper portion of the second side cover 12, the third side cover 13 is buckled and connected with the upper portion of the first side cover 11, and the third side cover 13 and the first side cover 11 enclose to form a first through hole 14, a second through hole 15 and a third through hole 16, wherein the length of the second through hole 15 is greater than that of the first through hole 14 and the third through hole 16. The first curtain rope 300 passes through the first through hole 14 and the second through hole 15 and then is matched and connected with the first driving wheel 22, and the second curtain rope 400 passes through the second through hole 15 and the third through hole 16 and then is matched and connected with the second driving wheel 32. In this application, a plurality of openings forming the three through holes are respectively formed at the top of the first side cover 11 and the top of the third side cover 13, and the three through holes are formed by surrounding the plurality of openings after the third side cover 13 is buckled with the first side cover 11. In this manner, the installation of the first and second blind cords 300 and 400 can be achieved by opening the third side cover 13.

By sharing the second through-hole 15 with the first blind cord 300 and the second blind cord 400, the die-sinking cost can be reduced. Through third side cap 13 pivoted connection at second side cap 12 and third side cap 13 encloses with first side cap 11 and establishes first through-hole 14, second through-hole 15 and third through-hole 16, can reduce the installation degree of difficulty of (window) curtain rope, improves the installation convenience.

Of course, the specific arrangement of the housing 10 is not constant, and those skilled in the art can adjust the housing 10 without departing from the principles of the present application, so that the present application is suitable for more specific application scenarios.

For example, although the above-described case 10 is described in connection with including the first side cover 11, the second side cover 12, and the third side cover 13, the specific composition of the case 10 is not exclusive, and may be adjusted by those skilled in the art. For example, the second side cover 12 and the third side cover 13 may be integrally formed, and then the whole may be fastened to the first side cover 11. For another example, the top surface of the portion of the first side cover 11 and/or the second side cover 12 including the through hole may be configured as a detachable cover plate, and the curtain cord may be mounted by detaching the cover plate.

For another example, although the above-described case 10 is described with reference to having the first through hole 14, the second through hole 15, and the third through hole 16 as an example, the number and arrangement of the through holes are not exclusive. In other embodiments, an elongated throughbore may be provided to allow both the first blind cord 300 and the second blind cord 400 to pass through. Or the second through hole 15 is split into two separate through holes for respectively penetrating the first curtain cord 300 and the second curtain cord 400.

For example, although the three through holes are formed by surrounding the openings of the first side cover 11 and the third side cover 13, the forming manner of the through holes is not fixed, and in other embodiments, at least one of the three through holes may be formed by surrounding the opening of one top of the first side cover 11 and the third side cover 13 with the top edge of the other.

For another example, the third side plate may be provided to be simultaneously snap-coupled to the first side plate and the second side plate, or the like, in addition to being pivotally coupled to the second side plate.

Referring now to fig. 2-3, 9-10, a specific embodiment of the mount 40 will be described.

In one embodiment, as shown in fig. 2-3 and 9-10, the mounting block 40 is provided with two oppositely disposed first mounting portions 44. Correspondingly, two opposite side walls of the housing 10 are respectively provided with a second mounting portion 17, and the second mounting portion 17 can be in fit connection with the first mounting portion 44 so as to realize detachable connection of the housing 10 to the mounting seat 40.

Specifically, the mount 40 includes a first riser 41, a second riser 42, a bottom plate 43, and a stop 46. The first riser 41 is provided with a first mounting structure 411, and the mounting seat 40 is fixedly mounted near the blind 200 by the first mounting structure 411. In this application, the first mounting structure 411 is a countersunk hole, and a plurality of countersunk holes are formed in the first riser 41 in an array, and the first riser 41 can be fixedly connected to a wall or a column near the blind 200 by passing a screw through the countersunk holes. Two second risers 42 are provided, the two second risers 42 are disposed opposite to each other and are respectively connected to two side edges of the first riser 41, and a first mounting portion 44 is disposed on an inner side of each second riser 42. Preferably, the two second risers 42 are integrally formed with the first riser 41 and are formed by bending both side edges of the first riser 41. The bottom plate 43 is connected to the bottom of the first riser 41, and extends horizontally from the bottom of the first riser 41, and the bottom of the housing 10 can abut against the bottom plate 43 when mounted.

Preferably, the first mounting portion 44 is a catch and the second mounting portion 17 is a rack. Each second riser 42 is provided with a buckle, and the buckle is elastically and pivotally arranged, and accordingly, two racks are respectively fixedly connected (e.g. glued, screwed, etc.) on the outer sides of the first side cover 11 and the third side cover 13, and each rack can be meshed with one buckle. Further, a first mounting groove 421 is formed at the top of the second riser 42, and two pivot shafts are extended outwards from the buckle, and a torsion spring is sleeved on each pivot shaft and is elastically and pivotally arranged in the first mounting groove 421 through the torsion spring. The second riser 42 is also formed with a chute 423 inside, and the chute 423 extends from the first mounting groove 421 to the bottom of the second riser 42 along the vertical direction, and when the housing 10 is mounted, the rack can slide along the chute 423 and be elastically clamped with the buckle.

Further, the mounting seat 40 further includes a key 45, a first opening 422 is further formed at the top of the second riser 42, a limiting flange is formed inside the first opening 422, the key 45 is connected with the buckle, and part of the key 45 extends out of the first opening 422 and is partially abutted against the limiting flange. Preferably, the key 45 is integrally formed with the clasp. In this way, the button 45, when pressed by an external force, can drive the catch to pivot downwards and thus disengage from the rack.

The stopper 46 is fixedly attached to the top of the second riser 42 mainly by screws, and is partially attached to a partial edge of the top of the first riser 41 by screws. The bottom of dog 46 is formed with second opening 461 and second mounting groove 462, and second opening 461 is inside also to be formed with spacing flange. In the installed state, the second notch 461 and the first notch 422 are surrounded to form a perforation, and part of the key 45 extends out of the perforation and is partially abutted against the two limiting flanges.

When the curtain control device 100 is installed, the third side cover 13 is opened, the first curtain rope 300 is sleeved on the first driving wheel 22, the second curtain rope 400 is sleeved on the second driving wheel 32, and then the third side cover 13 is buckled on the first side cover 11. Next, the two racks are aligned with the two slide grooves 423 and the housing 10 is moved downward until the housing 10 is snapped into place. In the moving process, each tooth structure of the rack presses down the buckle, so that the buckle pivots downwards, the torsion spring generates elastic deformation, then when the rack continues to move downwards to the tooth gap, the elastic deformation is recovered, and the buckle pivots upwards and is clamped in the tooth gap. When the housing 10 needs to be disassembled, the user uses one hand to press the two keys 45 at the same time, the keys 45 shrink and drive the buckle to pivot downwards to be separated from the rack, and the user lifts the housing 10 upwards by using the other hand at the moment, so that the housing 10 can be disassembled.

Through setting up mount pad 40, casing 10 detachably connects on mount pad 40, can reduce the installation degree of difficulty, conveniently dismantle the maintenance to casing 10 simultaneously. By providing the first mounting portion 44 on the mounting seat 40 and providing the second mounting portion 17 on the housing 10, the housing 10 can be detachably mounted with respect to the mounting seat 40, and the convenience of the housing 10 can be improved. At the same time, the two first mounting portions 44 and the two second mounting portions 17 are each disposed, which is also advantageous in improving the mounting stability of the housing 10. Through setting up buckle and rack, can improve the installation convenience, can also realize the position adjustment of casing 10 simultaneously, improve the installation stability. Through setting up button 45, conveniently realize dismantling and installation casing 10 through operating button 45, reduce the dismouting degree of difficulty. Through setting up spout 423, be favorable to fixing a position casing 10, improve the connection stability of installation convenience and casing 10. By arranging the stop block 46, the key 45 and the buckle can be enclosed between the stop block 46 and the second vertical plate 42, so that the structural stability is improved.

Of course, the specific arrangement of the mounting seat 40 is not unique, and a person skilled in the art may adjust the mounting seat to be suitable for a more specific application scenario.

For example, while the mount 40 is described in connection with having the first riser 41, the second riser 42, the bottom plate 43, this is merely a preferred embodiment, and in other embodiments, one skilled in the art may optionally omit the at least one structure, such as omitting the bottom plate 43 or omitting the at least one second riser 42, etc. For another example, the first mounting structure 411 may be provided on the first riser 41 in addition to the second riser 42, and the number thereof may be one, two, or more. Accordingly, the position of the second mounting portion 17 on the housing 10 needs to be adjusted. In addition, the mounting seat 40 is not necessary, and in other embodiments, a connection structure, such as a lug or a suction cup with a connection hole, may be directly disposed on the housing 10, so as to directly and fixedly connect the housing 10 to a wall or glass.

For another example, the specific arrangement of the first mounting portion 44 and the second mounting portion 17 may be adjusted. For example, the setting positions of the buckle and the rack may be interchanged, or one of the first mounting portion 44 and the second mounting portion 17 is a clamping block, and the other is a clamping groove, where the clamping block can be slidably clamped.

For another example, the first mounting structure 411 may be a suction cup, in addition to the counter bore, by which the first riser 41 may be mounted on a glass or smooth surface.

For another example, the setting of the key 45 is not necessary, and one skilled in the art can select whether to set based on a specific application scenario. In addition, when the key 45 is set, the key 45 may be set separately from the buckle, so long as the key 45 can drive the buckle to rotate when the key 45 is pressed.

For another example, the setting of the stopper 46 is not necessary, and one skilled in the art may select according to the application scenario.

For another example, besides the elastic pivoting through the torsion spring, the same function can be realized through the compression spring, and at this time, two ends of the compression spring can be abutted against the lower side surface of the buckle and the bottom of the first mounting groove 421.

For another example, the chute 423 is not necessarily provided, and in other embodiments, the chute 423 may be omitted.

Referring next to fig. 2-8, a specific embodiment of the power module 50 will be described.

As shown in fig. 2 to 8, the power module 50 includes a power box 51 and a power assembly 52 disposed in the power box 51, the power box 51 is detachably connected to the housing 10, and the power assembly 52 is connected to the first driving mechanism 21 so as to supply power to the first driving mechanism 21.

Specifically, the first end of the power box 51 is a closed end, the second end is an open end, and the power box 51 is detachably connected to the lower portion of the housing 10. The lower part of one side of the shell 10 far away from the mounting seat 40 is provided with a mounting hole 18, a first connecting structure is arranged at the mounting hole 18, a second connecting structure 511 is arranged at the first end of the power box 51, the power box 51 can be inserted into the shell 10 from the mounting hole 18, and after being inserted in place, the first connecting structure and the second connecting structure 511 are matched and connected with each other, and the first end of the power box 51 is matched with the mounting hole 18. Preferably, the lower parts of the first side cover 11 and the second side cover 12 are respectively formed with a notch, and after the first side cover 11 and the second side cover 12 are fixedly connected, two notches are surrounded to form a mounting hole 18. The first connection structure is an inner side of the mounting hole 18, and the second connection structure 511 is an elastic claw, which is disposed at a closed end of the power supply box 51. When the battery box is installed, the open end of the power box 51 is inserted from the installation hole 18, and after the power box is inserted in place, the two elastic clamping claws at the closed end of the power box 51 are clamped on the inner side edge of the installation hole 18, so that the battery box is fixed. When the power supply box 51 needs to be disassembled, only two elastic claws are needed to be pressed at the same time, and then the power supply box 51 is pulled out.

Further, the power supply assembly 52 includes a main control board 521 and a rechargeable battery 522, the rechargeable battery 522 is electrically connected to the main control board 521, and the main control board 521 is electrically connected to the first driving mechanism 21. Main control board 521 and rechargeable battery 522 pass through open end and install in power pack 51, and wherein, main control board 521 fixed connection is in the inside diapire of power pack 51, and power pack 51 is formed with the battery card position, and rechargeable battery 522 joint is in the battery card position. Preferably, a plurality of ribs 512 are formed on two opposite inner side walls of the power supply box 51 along the width direction, each rib 512 extends along the length direction of the power supply box 51, and two side walls formed with the ribs 512 are respectively formed with an opening 513 at the open end. The ribs 512 are surrounded to form a battery clamping position, and the power supply clamp is fixed in the battery clamping position. In addition, two sockets are provided on the main control board 521, and pins are provided at the lead ends of the first driving mechanism 21 and the second driving mechanism 31, each of which is detachably connected to one of the sockets.

The above arrangement can realize the independent disassembly of the power module 50 under the condition that the first driving module 20 is connected with the first curtain rope 300, so as to charge, replace the battery or repair the power module 50, and improve the repair and replacement convenience of the device. By providing the mounting hole 18, the power supply box 51 is inserted into the housing 10 from the mounting hole 18, and the convenience of attaching and detaching the power supply box 51 can be improved. The main control board 521 and the rechargeable battery 522 are arranged in the battery box, so that the replacement and the maintenance of the rechargeable battery 522 and the main control board 521 are facilitated, and the maintenance and replacement convenience is improved. The second end of the power supply box 51 is opened, so that the convenience in assembling and disassembling the main control board 521 and the rechargeable battery 522 can be improved. By providing the plurality of ribs 512 to form a battery clamping position, the rechargeable battery 522 can be fixed on one hand, and the structural strength of the battery box can be improved on the other hand. An opening 513 is formed at the open end through the side wall to facilitate the assembly and disassembly of the rechargeable battery 522. By providing the plug and the socket, separation between the first driving mechanism 21 and the main control board 521 is facilitated.

It will be appreciated by those skilled in the art that the above-described arrangement of the power module 50 is not exclusive and can be adjusted by those skilled in the art.

For example, although the power module 50 is described in connection with the power box 51, it is apparent that the power box 51 is not necessarily provided, and in other embodiments, the power box 51 may be omitted, and the main control board 521 and the rechargeable battery 522 may be directly provided in the housing 10.

As another example, although the power supply assembly 52 is described in connection with the main control board 521 and the rechargeable battery 522, the specific composition of the power supply assembly 52 is not limited thereto, and in other embodiments, the power supply assembly 52 may include only the main control board 521 or the rechargeable battery 522. In addition, the rechargeable battery 522 may be replaced by a battery mounting groove for the user to mount the dry battery.

For another example, although the above arrangement is described in connection with the power supply box 51 being disposed at the lower portion of the housing 10, the specific installation position of the power supply box 51 is not fixed, and may be adjusted by those skilled in the art according to the application scenario. For example, the power supply box 51 may be detachably hung on the bottom surface or the side surface of the housing 10, or may be detachably provided in the middle of the housing 10.

For another example, the first connection structure and the second connection structure 511 are not limited to be disposed, and in other embodiments, one of the first connection structure and the second connection structure 511 is a clamping groove 322, and the other is a clamping block. Or one of the first connection structure and the second connection structure 511 is a card hole, and the other is a card post. Or one of the first connection structure and the second connection structure 511 is a magnet, and the other is a magnet or a magnetic member.

For another example, the mounting hole 18 may be formed by surrounding the first side cover 11 and the second side cover 12, or may be provided only on the first side cover 11 or the second side cover 12, for example, may be formed on the front surface of the first side cover 11 or the second side cover 12, so as to realize side sliding mounting of the power supply box 51.

For another example, the specific structure of the power supply box 51 is not limited, and the power supply box 51 may be provided with both ends as a closed end, an upper side as an open end, or the power supply box 51 may be formed by fastening a plurality of box bodies, etc., in addition to the arrangement in which one end is a closed end and one end is an open end.

For example, the battery locking portion may be formed by surrounding the rib 512, and may have other structures as long as the battery can be effectively fixed in the power supply box 51. For example, the battery clamping position is formed by surrounding a plurality of limiting plates.

The first drive module 20 will be described with reference to fig. 4-6, 11-12.

As shown in fig. 4-6 and 11-12, the first driving module 20 includes a first driving mechanism 21, a first driving wheel 22, a first bearing 23 and a first micro control board 24, which are disposed in the housing 10. The first driving mechanism 21 is disposed in the casing 10 in a liftable manner, the first driving wheel 22 is connected with the first driving mechanism 21, and the first curtain cord 300 can be connected with the first driving wheel 22 in a matching manner.

Specifically, the first driving mechanism 21 includes a first bracket 211 and a first motor 212, the first bracket 211 is liftably mounted on the inner wall of the housing 10, a first mounting position 2111 is formed on the first bracket 211, and the motor is fixedly mounted on the first mounting position 2111. The inner wall of the housing 10 is provided with a limiting frame 111, the first bracket 211 is provided with a limiting groove 2112, and the limiting groove 2112 is slidably arranged in the limiting frame 111. The housing 10 is further provided with an elastic member 60, the elastic member 60 is connected between the limit groove 2112 and the limit frame 111, and the elastic member 60 is configured to generate elastic potential energy for inhibiting the first driving mechanism 21 from rising when the first driving mechanism 21 has a rising trend relative to the housing 10. Preferably, the limiting frame 111 includes a lower frame 1112 and an upper frame 1111, the lower frame 1112 is formed on the inner wall of the housing 10, and the upper frame 1111 is fixedly connected to the lower frame 1112 by screwing. Slide rails 11121 are formed on two sides of the lower frame 1112, slide blocks 21121 are formed on two sides of the limiting groove 2112 in an outward extending mode, and the slide blocks 21121 are slidably arranged on the slide rails 11121. The elastic member 60 is a compression spring, the upper frame 1111 extends downward to form a limiting hole column 11111, one end of the elastic member 60 abuts against the inside of the limiting hole column 11111, and the other end abuts against the inside of the limiting groove 2112.

In the mounted state, the compression spring has a certain deformation, and the deformation causes the limit groove 2112 to be crimped to the bottom of the limit frame 111. When the first curtain cord 300 is sleeved on the first driving wheel 22 and is tensioned, the first driving wheel 22 is subjected to an upward pulling force, and the pulling force is transmitted to the first bracket 211, so that the first bracket 211 has a tendency to move upwards, and the elastic force provided by the elastic potential energy of the compression spring can inhibit the rising tendency, so that the first curtain cord 300 is kept motionless or only slightly rising, and still is in a tensioned state.

The first mounting position 2111 is provided on a first side of the first bracket 211, which is substantially in a cylindrical shape with one end open, the first motor 212 is a reduction motor, which is mounted inside the first mounting position 2111 through an open end, and the output shaft protrudes through the first mounting position 2111. The first driving wheel 22 is cylindrical, and the first driving wheel 22 comprises a first rim 221 and an anti-slip cylinder 222, wherein the anti-slip cylinder 222 is made of rubber or silica gel, is sleeved on the rim and does not have relative movement with the rim, such as adhesion, interference fit and the like. The outer side surface of the anti-slip cylinder 222 is provided with an anti-slip layer, which is not limited in this application, and may be an anti-slip protrusion, an anti-slip groove, an anti-slip coating, or the like. The first curtain rope 300 is a curtain rope, and the curtain rope is matched and sleeved with the anti-slip cylinder 222. Further, the first end of the first rim 221 is an open end, and the first rim 221 is sleeved outside the first motor 212 through the open end. After the sleeve is put, the rotation friction between the inner side wall of the first rim 221 and the outer side wall of the first mounting position 2111 can be reduced by providing a bearing. The second end of the first rim 221 extends outwards to form a first rotating shaft 2211, a first bearing 23 is sleeved on the first rotating shaft 2211, and the first bearing 23 abuts against the inner wall of the third side cover 13 of the shell 10. Preferably, the first bearing 23 is a thrust bearing. Accordingly, three vertically extending stopper ribs 131 are formed on the inner wall of the third side cover 13, and the first bearing 23 is located between the two stopper ribs 131 on the right side (according to the orientation shown in fig. 6).

Further, the first driving module 20 further includes a first clutch, and the first motor 212 is connected to an inner sidewall of the first rim 221 through the first clutch. For the specific structure and connection manner of the first clutch, refer to patent documents CN201771992U, CN217029726U or CN218093911U, and this will not be described in detail in the present application.

Further, a first connection groove 2113 is formed on the second side of the first bracket 211, the micro-control board is fixedly connected to the first connection groove 2113, the first motor 212 is connected to the first micro-control board 24, and the first micro-control board 24 is connected to the main control board 521.

The first driving wheel 22 is sleeved on the first motor 212, so that the occupied space of the first driving module 20 can be reduced, and the product structure is compact and miniaturized. The first rotating shaft 2211 is abutted in the inner wall of the shell 10 or the hole groove through the first bearing 23, so that friction between the first rotating shaft 2211 and the shell 10 can be reduced, and the service life of a product is prolonged. The first driving mechanism 21 can be lifted, the elastic piece 60 is arranged between the shell 10 and the first driving mechanism 21, the tensioning of curtain ropes can be realized through the elastic piece 60, the curtain ropes are prevented from slipping, and the connection stability of the device is improved. Meanwhile, the first driving mechanism 21 can be arranged in a lifting mode, and the installation difficulty of curtain ropes can be reduced. By arranging the limiting frame 111 on the inner wall of the housing 10, the first bracket 211 can be limited, so that the elastic piece 60 always maintains certain elastic potential energy, and the connection stability is improved. By providing the upper frame 1111 and the lower frame 1112, the difficulty in assembling the first driving mechanism 21 can be reduced. By providing the slide 11121, the sliding stability can be improved by guiding the slide in the sliding process of the limit groove 2112. By providing the spacing posts 11111, the mounting stability of the elastic member 60 can be improved. The elastic member 60 is a compression spring, and is simple and reliable and low in cost. By providing the limiting ribs 131, the first rotating shaft 2211 or the first bearing 23 can be limited in the horizontal direction, and the lifting stability of the first driving module 20 is improved. By providing the first clutch, the automatic control and the manual control of the blind 200 can be switched advantageously, and the practicability of the device can be improved. By arranging the first micro control board 24 and arranging the first micro control board 24 in the first connecting groove 2113, the control precision of the first motor 212 can be improved, the wiring length can be shortened, and wiring interference can be avoided. The first driving wheel 22 is provided with an anti-slip cylinder 222 which can be matched with a curtain pull rope, and improves the connection stability and avoids the pull rope from slipping.

It will be appreciated by those skilled in the art that the above-mentioned arrangement of the first driving module 20 is not limited thereto, and those skilled in the art can adjust the arrangement without departing from the principles of the present application, so that the adjusted technical solution is suitable for more specific application scenarios.

For example, although the above arrangement is described in connection with the liftable arrangement of the first driving mechanism 21, this is merely a preferred embodiment, and in other embodiments, the person skilled in the art may also arrange the first driving mechanism 21 to be fixedly connected to the housing 10, which is of course disadvantageous for improving the connection stability of the first blind cord 300.

For example, the first driving mechanism 21 is described by taking the first bracket 211 and the first motor 212 as an example, but the specific composition of the first driving mechanism 21 is not limited to this, and in other embodiments, the first bracket 211 may be omitted, and the first motor 212 may be fixedly connected to the housing 10 or may be connected to the housing 10 in a vertically movable manner. Further, if the first mounting position 2111 is provided on the first bracket 211, the first mounting position 2111 may be omitted or the structure of the first mounting position 2111 may be adjusted by a person skilled in the art on the premise that the first motor 212 can be fixedly connected.

For example, although the above embodiment has been described with respect to the case 10 having the stopper frame 111 and the first bracket 211 having the stopper groove 2112, this is not limitative, but in other embodiments, the stopper frame 111 may be provided on the first bracket 211, and the case 10 may have only the stopper groove 2112 or a cylinder structure capable of being engaged with a compression spring. For another example, although the limiting frame 111 is described in connection with the upper frame 1111 and the lower frame 1112, the specific forming manner of the limiting frame 111 is not limited, and for example, those skilled in the art can set the two as an integral molding.

For another example, the slide 11121 on the lower frame 1112 is not required and may be omitted by those skilled in the art. Similarly, the limiting posts 11111 on the upper frame 1111 are not required, and may be omitted by those skilled in the art.

For another example, although the elastic member 60 is described with reference to a compression spring, the form of the elastic member 60 is not always the same, and one skilled in the art may replace it with an elastic rubber block, a spring plate, an extension spring, or the like. Of course, the use of extension springs requires changing the manner in which the extension springs are connected.

For another example, the front end of the first rim 221 may be connected to the first driving wheel 22 in a cantilever manner without providing the first rotation shaft 2211. For another example, in the case where the first rotation shaft 2211 is provided, the first rotation shaft 2211 may directly abut against the inner wall of the housing 10 or in a hole groove provided in the inner wall of the housing 10. Or the first rotation shaft 2211 is abutted against a hole groove provided on the inner wall of the housing 10 through the first bearing 23.

For another example, although the above embodiment is described with reference to the case where the third side plate is provided with the stopper rib 131, the stopper rib 131 is not necessarily provided, and one skilled in the art may omit the stopper rib 131 or replace the stopper rib 131 with a stopper groove.

For another example, the specific configuration of the first drive wheel 22 is not constant, for example, one skilled in the art may omit the provision of the anti-slip cartridge 222, provide an anti-slip coating directly on the rim, or modify the configuration of the rim so that the rim can be effectively engaged with the pull cord.

As another example, although the above embodiment is described in connection with the provision of the first clutch, the provision of the first clutch is not essential, and the first clutch may be omitted selectively by those skilled in the art.

For another example, the first micro control board 24 is not necessarily provided, and a person skilled in the art may integrate its functions into the main control board 521.

The second drive module 30 will be described with reference to fig. 4-5, 13-14.

As shown in fig. 4-5 and 13-14, the second driving module 30 includes a second driving mechanism 31, a second driving wheel 32, a second bearing 33 and a second micro control board 34, which are disposed in the housing 10. The second driving mechanism 31 is fixedly connected in the casing 10, the second driving wheel 32 is connected with the second driving mechanism 31, and the second curtain cord 400 can be connected with the second driving wheel 32 in a matching way.

Specifically, the second driving mechanism 31 includes a second bracket 311 and a second motor 312, the second bracket 311 is fixedly mounted on an inner wall of the first side cover 11 of the housing 10, a second mounting position 3111 is formed on the second bracket 311, and the motor is mounted at the second mounting position 3111. The second mounting position 3111 is provided on a first side of the second bracket 311, which is substantially in a cylindrical shape with one end opened, the second motor 312 is a gear motor, which is mounted inside the second mounting position 3111 through an opened end, and the output shaft protrudes through the second mounting position 3111. The second driving wheel 32 is cylindrical, the second driving wheel 32 comprises a second rim 321, a plurality of clamping grooves 322 are formed in the outer peripheral side of the second rim 321, the second curtain rope 400 is a curtain pull bead, and the clamping grooves 322 can be connected with the curtain pull bead in a matched mode. Further, the first end of the second rim 321 is an open end, and the second rim 321 is sleeved outside the second motor 312 through the open end. After the sleeve is arranged, the rotation friction between the inner side wall of the second rim 321 and the outer side wall of the second mounting position 3111 can be reduced by arranging a bearing. The second end of the second rim 321 extends outwards to form a second rotating shaft 3211, a second bearing 33 is sleeved on the second rotating shaft 3211, and the second bearing 33 abuts against the inner wall of the third side cover 13 of the casing 10. Preferably, the second bearing 33 is a thrust bearing. The second bearing 33 is located between the two stop bars 131 on the left (according to the orientation shown in fig. 6).

Further, the second driving module 30 further includes a second clutch, and the second motor 312 is connected to an inner sidewall of the second rim 321 through the second clutch. For the specific structure and connection manner of the second clutch, reference may still be made to patent documents CN201771992U, CN217029726U or CN218093911U, which are not described in detail in the present application.

Further, a second connection slot 3112 is further formed on the second side of the second bracket 311, the micro-control board is fixedly connected to the second connection slot 3112, the second motor 312 is connected to the second micro-control board 34, and the second micro-control board 34 is connected to the main control board 521.

The second driving wheel 32 is sleeved on the second motor 312, so that the occupied space of the second driving module 30 can be reduced, and the product structure is compact and miniaturized. The second rotating shaft 3211 abuts against the inner wall of the casing 10 through the second bearing 33, so that friction between the second rotating shaft 3211 and the casing 10 can be reduced, and the service life of the product can be prolonged. By providing the second clutch, the automatic control and the manual control of the blind 200 can be switched advantageously, and the practicability of the device can be improved. By providing the second micro-control board 34 and disposing the second micro-control board 34 in the second connection groove 3112, the control accuracy of the second motor 312 can be improved, the wiring length can be shortened, and wiring interference can be avoided. The clamping groove 322 is formed on the outer periphery of the second rim 321, so that the clamping groove 322 can be used for clamping the curtain bead, and the connection stability is improved.

It will be appreciated by those skilled in the art that the above-mentioned arrangement of the second driving module 30 is not limited thereto, and those skilled in the art can adjust the arrangement without departing from the principles of the present application, so that the adjusted technical solution is suitable for more specific application scenarios.

For example, although the second driving mechanism 31 is described by taking the second bracket 311 and the second motor 312 as examples, the specific composition of the second driving mechanism 31 is not limited to the above, and in other embodiments, the second bracket 311 may be omitted and the second motor 312 may be fixedly connected to the housing 10. Further, if the second bracket 311 is provided with the second mounting position 3111, the person skilled in the art may omit the second mounting position 3111 or adjust the structure of the second mounting position 3111 on the premise that the second motor 312 can be fixedly connected.

For another example, the second driving wheel 32 may be a closed structure and connected to the front end of the second motor 312, in addition to being cylindrical and sleeved on the second motor 312. For another example, the second driving wheel 32 may be connected in a cantilever manner without providing the second rotating shaft 3211 at the front end of the second rim 321. For another example, when the second rotating shaft 3211 is provided, the second rotating shaft 3211 may directly abut against the inner wall of the casing 10 or may be in a hole provided in the inner wall of the casing 10. Or the second rotating shaft 3211 is abutted against a hole groove provided in the inner wall of the housing 10 through the second bearing 33.

For another example, although the above embodiment is described with reference to the case where the third side plate is provided with the stopper rib 131, the stopper rib 131 is not necessarily provided, and one skilled in the art may omit the stopper rib 131 or replace the stopper rib 131 with a stopper groove.

For another example, the specific structure of the second driving wheel 32 is not constant, and for example, a person skilled in the art may change the setting position and the setting manner of the clamping groove 322.

As another example, although the above embodiment is described in connection with the provision of the second clutch, the provision of the second clutch is not essential, and the second clutch may be omitted selectively by those skilled in the art.

For another example, the second micro control board 34 is not necessary, and a person skilled in the art may integrate its functions into the main control board 521.

For another example, the setting manner of the second driving module 30 may be the same as that of the first driving module 20, or the setting manner of the first driving module 20 may be the same as that of the second driving module 30, so that the application can be suitable for other application scenarios.

Of course, the alternative embodiments described above, as well as the alternative and preferred embodiments, may also be used in a cross-fit manner, thereby combining new embodiments to suit more specific application scenarios.

The operation of the window covering control device 100 of the present application will be described below.

In one embodiment, the first driving wheel 22 is sleeved with a curtain rope, and the curtain rope is pulled on the anti-slip cylinder 222 and does not rotate relative to the anti-slip cylinder 222, wherein the curtain rope is used for controlling the lifting of the blind 200. The second driving wheel 32 is sleeved with a curtain pull bead, and the curtain pull bead is clamped in a clamping groove 322 of the second driving wheel 32, wherein the curtain pull bead is used for controlling the swing angle of the blades of the blind 200.

When the automatic lifting of the blind 200 is required to be controlled, the first motor 212 is controlled to start to operate, and the first motor 212 drives the curtain stay cord to circularly move through the first driving wheel 22, so that the lifting of the blind 200 is realized.

When the blade adjustment angle of the blind 200 needs to be controlled, the second motor 312 is controlled to start running, and the second motor 312 drives the curtain to move by the second driving wheel 32, so that the blade angle adjustment is realized.

When the lifting of the blind 200 needs to be manually adjusted, the user directly pulls the curtain cord, and the first clutch and the first driving wheel 22 are disconnected at this time, so that the lifting of the blind 200 can be easily realized.

When the blade angle of the blind 200 needs to be manually adjusted, the user directly pulls the curtain beads, and the second clutch and the second driving wheel 32 are disconnected at this time, so that the blade angle adjustment of the blind 200 can be easily realized.

It should be noted that, although the above embodiment is described with reference to the window shade 200 in which the window shade control device 100 is applied to both the ascending and descending and the adjustment of the blade angle, this is not intended to limit the application scope of the present application, and those skilled in the art may apply the present application to other application scenarios, such as controlling the ascending and descending of two window shades 200 or the blade angle of two window shades 200 by the window shade control device 100 of the present application.

It should be further noted that although the specific control modes of the first motor 212 and the second motor 312 are not described in the above embodiment, it is not unclear that a person skilled in the art may select any control mode in the prior art to control the first motor 212 and the second motor 312. For example, a person skilled in the art may use a physical button to control the forward and reverse rotation of the two motors, or use a wireless control manner such as WiFi, bluetooth, infrared, zigBee, etc. to control the forward and reverse rotation of the two motors.

Those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any of the claimed embodiments may be used in any combination.

Thus far, the technical solution of the present application has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present application is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present application, and such modifications and substitutions will be within the scope of the present application.

Claims (10)

1. A window covering control device, the window covering control device comprising:

the top of the shell is provided with a through hole;

the first driving module comprises a first driving mechanism arranged in the shell and a first driving wheel connected with the first driving mechanism, a first curtain rope can pass through the through hole to be connected with the first driving wheel in a matched mode, the first driving wheel is cylindrical, the first end of the first driving wheel is an open end, and the first driving wheel is sleeved on the first driving mechanism through the open end;

the main control board is arranged in the shell and is connected with the first driving mechanism.

2. The window shade control device of claim 1, wherein the first drive mechanism comprises a first bracket and a first motor, the first bracket is mounted on the inner wall of the housing, a first mounting position is formed on one side of the first bracket, the motor is mounted on the first mounting position, and the first driving wheel is sleeved on the first motor through the opening end.

3. The window covering control device of claim 2, wherein the first drive module further comprises a first clutch, and the first motor is coupled to the first drive wheel via the first clutch.

4. The window shade control device of claim 2, wherein the first drive module further comprises a first micro-control board, a first connecting groove is formed on the second side of the first bracket, the micro-control board is fixedly connected to the first connecting groove, the first motor is connected with the first micro-control board, and the first micro-control board is connected with the main control board.

5. The curtain control device according to claim 1, wherein the second end of the first driving wheel extends outwards to form a first rotating shaft, and the first rotating shaft is abutted against the inner wall of the shell or a hole groove formed in the inner wall of the shell; or alternatively

The second end of the first driving wheel extends outwards to form a first rotating shaft, and the first rotating shaft is abutted to the inner wall of the shell or a hole groove formed in the inner wall of the shell through a first bearing.

6. The curtain control device according to claim 1, further comprising a second driving module, wherein the second driving module comprises a second driving mechanism arranged in the housing and a second driving wheel connected with the second driving mechanism, a second curtain rope can pass through the through hole to be connected with the second driving wheel in a matching manner, the second driving wheel is cylindrical, the first end of the second driving wheel is an open end, the second driving wheel is sleeved on the second driving mechanism through the open end, and the main control board is connected with the second driving mechanism.

7. The window shade control device of claim 6, wherein the second drive mechanism comprises a second bracket and a second motor, the second bracket is mounted on the inner wall of the housing, a second mounting position is formed on one side of the second bracket, the motor is mounted on the second mounting position, and the second drive wheel is sleeved on the second motor through the opening end.

8. The window covering control device of claim 7, wherein the second drive module further comprises a second clutch, the second motor being coupled to the second drive wheel via the second clutch.

9. The window shade control device of claim 7, wherein the second drive module further comprises a second micro-control board, a second connecting groove is formed on a second side of the second bracket, the micro-control board is fixedly connected to the second connecting groove, the second motor is connected to the second micro-control board, and the second micro-control board is connected to the main control board.

10. The curtain control device according to claim 9, wherein a second end of the second driving wheel extends outwards to form a second rotating shaft, and the second rotating shaft is abutted against the inner wall of the shell or a hole groove formed in the inner wall of the shell; or alternatively

The second end of the second driving wheel extends outwards to form a second rotating shaft, and the second rotating shaft is abutted to the inner wall of the shell or a hole groove formed in the inner wall of the shell through a second bearing.