阅读说明：本技术 一种可伸缩的电动窗帘轨道及其驱动方法和电动窗帘 (Telescopic electric curtain rail, driving method thereof and electric curtain ) 是由 王金友 于 2020-06-18 设计创作，主要内容包括：本申请公开了一种可伸缩电动窗帘轨道及其驱动方法和电动窗帘,包括设置有第一环形传送带的第一轨道部、与所述第一轨道部平行设置,设置有第二环形传送带的第二轨道部、设置在所述第一轨道部的端部的连接部、电机接口以及连接所述电机接口的第一驱动部,所述第一驱动部驱动所述第一轨道部上的第一环形传送带进行传动,并通过所述第一从动轮带动所述第二环形传送带传动；或驱动所述第二轨道部上的第二环形传送带进行传动,并通过所述第一从动轮带动所述第一环形传送带传动,所述第一环形传送带与所述第二环形传送带的水平高度不同,所述第一所述轨道部和第二轨道部通过所述连接部可进行相互平行伸缩移动,可以满足不同长度的窗帘的使用。(The application discloses a telescopic electric curtain track, a driving method thereof and an electric curtain, which comprise a first track part provided with a first annular conveyor belt, a second track part arranged in parallel with the first track part, a connecting part arranged at the end part of the first track part, a motor interface and a first driving part connected with the motor interface, wherein the first driving part drives the first annular conveyor belt on the first track part to transmit, and drives the second annular conveyor belt to transmit through a first driven wheel; or drive second endless conveyor on the second track portion carries out the transmission, and pass through first from driving wheel drive first endless conveyor transmission, first endless conveyor with the level of second endless conveyor is different, it is first track portion and second track portion pass through connecting portion can carry out the telescopic movement that is parallel to each other, can satisfy the use of the (window) curtain of different length.)

1. A retractable motorized window treatment track, comprising:

a first rail part provided with a first endless conveyor belt;

the second track part is arranged in parallel with the first track part and is provided with a second annular conveyor belt;

a connecting portion provided at an end of the first rail portion; the first track part and the second track part can be mutually parallel, telescopically and movably moved through the connecting part, the connecting part comprises a first driven wheel, and the first driven wheel can be in transmission connection with the first annular conveying belt and the second annular conveying belt;

the motor interface is arranged at one end, far away from the driving connecting part, of the first track part or the second track part; and

the first driving part is connected with the motor interface, drives the first annular conveyor belt on the first track part to transmit, and drives the second annular conveyor belt to transmit through the first driven wheel; or the second annular conveying belt on the second track part is driven to transmit, and the first annular conveying belt is driven to transmit through the first driven wheel;

wherein the first endless conveyor belt and the second endless conveyor belt are at different levels.

2. The retractable motorized window treatment track of claim 1, wherein the first driven wheel comprises a clutch core, the clutch core comprising a first shaft and a second shaft that are concentric;

one end of the first annular conveyor belt rotates around the first shaft of the clutch shaft core;

the second annular conveying belt is wound out of the second track part and sleeved on a second shaft of the clutch shaft core to rotate;

the first annular conveying belt and the second annular conveying belt are in transmission connection with each other through the clutch shaft center.

3. The retractable power curtain rail as claimed in claim 2, wherein the first endless belt has a lower level than the second endless belt, the first driving portion is disposed at an end of the first rail portion away from the connecting portion, and the first driving portion drives the first endless belt on the first rail portion to transmit power and drives the second endless belt to transmit power through the first driven wheel.

4. The retractable motorized window treatment track as recited in claim 2, wherein the connecting portion further comprises a second driven wheel and a third driven wheel, the first driven wheel, the second driven wheel and the third driven wheel are distributed in a triangular shape, the second endless conveyor belt is respectively driven by the second driven wheel, the first driven wheel and the third driven wheel, and the first driven wheel is disposed inside the second endless conveyor belt; the second driven wheel and the third driven wheel are respectively arranged on the outer sides of the second annular conveying belts;

the second driven wheel and the third driven wheel are arranged in a row and are arranged between the first driven wheel and the second track part.

5. The retractable motorized window treatment track of claim 4, wherein a line connecting the second driven wheel and the third driven wheel is parallel to the first endless belt.

6. The retractable motorized window treatment track of claim 4, wherein the distance between the second driven wheel and the third driven wheel is no greater than three times the diameter of the axle of the first driven wheel.

7. The retractable motorized window treatment track of claim 4, wherein the distance between the second driven wheel and the third driven wheel is between 0.3 times the diameter of the axle of the first driven wheel and the diameter of the axle of the first driven wheel.

8. The retractable motorized window treatment track of claim 1, wherein the first track portion comprises a first wheel, the first wheel and the first driven wheel being disposed inwardly of the ends of the first endless conveyor to rotate the first endless conveyor; the second track part comprises a second wheel and a third wheel which are respectively arranged on the inner sides of two ends of the first annular conveyor belt and used for driving the second annular conveyor belt to rotate;

the third wheel is remote from the first wheel; the second wheel is adjacent to the first wheel;

the two motor interfaces are respectively in driving connection with the first wheel and the third wheel;

the first annular conveying belt and the second annular conveying belt are respectively provided with at least one transmission trolley, and the transmission trolley is provided with a curtain interface for hanging a curtain;

the first rail portion includes: the first side plate, the second side plate and the bottom plate are connected with the first side plate and the second side plate;

the second rail portion includes: the first side plate, the second side plate and the bottom plate are connected with the first side plate and the second side plate;

the first side plate of the first track part is adjacent to the first side plate of the second track part, and the second side plate of the first track part is opposite to the second side plate of the second track part;

the first annular conveyor belt is arranged on the bottom plate of the first track part, and the second annular conveyor belt is arranged on the bottom plate of the second track part;

the first side plate is lower than the second side plate, and the bottom plate of the first track part is lower than the bottom plate of the second track part;

the two transmission trolleys are respectively arranged on the two second side plates, the first track part also comprises a first fixing structure, and the transmission trolleys are fixed on the first annular conveying belt by the first fixing structure; the transmission trolley of the first track part can slide on the second side plate of the first track part;

the second track part also comprises a second fixing structure, and the second fixing structure fixes the transmission trolley on the second annular conveying belt; the transmission trolley of the second track part can slide on the second side plate of the second track part;

the first driven wheel comprises a clutch shaft core, the clutch shaft core comprises a first shaft and a second shaft which are coaxial, and the periphery of the first shaft is provided with clamping teeth which are meshed with the clamping teeth of the first annular conveying belt; and the periphery of the second shaft is provided with clamping teeth which are meshed with the clamping teeth of the second annular conveying belt.

9. A driving method for a retractable motorized window treatment track according to any one of claims 1 to 8, comprising the steps of:

the motor is started and rotates towards a first direction, the first driving part drives the first annular conveyor belt to transmit, and the first conveyor belt drives the second conveyor belt to transmit through the first driven wheel of the connecting part so as to drive the corresponding curtain on the first track and the corresponding curtain on the second track to move oppositely;

the motor is started and rotates towards the second direction, the first driving part drives the first annular conveyor belt to transmit, and the first conveyor belt drives the second conveyor belt to transmit through the first driven wheel of the connecting part so as to drive the corresponding curtain on the first track and the corresponding curtain on the second track to move in a closing mode;

wherein the first direction and the second direction are opposite.

10. A motorized window treatment comprising a motor and the retractable motorized window treatment track of any one of claims 1-8, wherein the motor is disposed at the motor interface to drive the first drive member to rotate.

Technical Field

The application relates to the technical field of electric curtains, in particular to a telescopic electric curtain rail, a driving method thereof and an electric curtain.

Background

Along with the continuous improvement of science and technology level, more and more the appearance of intelligent house is in people's life, receive liking of modern majority people, and electric window curtain is one of the representatives of intelligent house, has brought a lot of facilities for people's life, and electric window curtain adopts the automatically controlled mode to realize opening and drawing in of (window) curtain, and the user accessible is wired or wireless control comes opening and drawing in of operation (window) curtain, uses convenience and intelligence very, has the unique advantage that ordinary (window) curtain does not have.

Because the size and dimension of the window of every family all inequality basically, current (window) curtain track need carry out the customization preparation according to the size of window of difference, need artifical the measurement of going to the door, and is with high costs, also has some at present to use the concatenation track, and installer splices according to actual length fixed length track to reach actual length, nevertheless have a lot of splices, influence pleasing to the eye.

Disclosure of Invention

The application aims to provide a telescopic electric curtain rail, a driving method thereof and an electric curtain, which are used for adapting to windows with different sizes, are convenient to install, can be used for batch production of curtain rails with a certain length range, and improve the production efficiency.

The application discloses a telescopic electric curtain rail, which comprises a first rail part, a second rail part and a third rail part, wherein a first annular conveyor belt is arranged on the first rail part; the second track part is arranged in parallel with the first track part and is provided with a second annular conveyor belt; a connecting portion provided at an end of the first rail portion; the first track part and the second track part can be mutually parallel, telescopically and movably moved through the connecting part, the connecting part comprises a first driven wheel, and the first driven wheel can be in transmission connection with the first annular conveying belt and the second annular conveying belt; the motor interface is arranged at one end, far away from the driving connecting part, of the first track part or the second track part; the first driving part is connected with the motor interface, drives the first annular conveyor belt on the first track part to transmit, and drives the second annular conveyor belt to transmit through the first driven wheel; or the second annular conveying belt on the second track part is driven to transmit, and the first annular conveying belt is driven to transmit through the first driven wheel; wherein the first endless conveyor belt and the second endless conveyor belt have different levels.

Optionally, the first driven wheel comprises a clutch shaft core, and the clutch shaft core comprises a first shaft and a second shaft which are coaxial; one end of the first annular conveyor belt rotates around the first shaft of the clutch shaft core; the second annular conveying belt is wound out of the second track part and sleeved on a second shaft of the clutch shaft core to rotate; the first annular conveyor belt and the second annular conveyor belt are in transmission connection with each other through the clutch shaft center; in this scheme, the hold-in range has divided into upper and lower two-layer, and one deck belt wherein is by motor drive back, and accessible separation and reunion axle core drives the belt of another layer and carries out the transmission.

Optionally, the level of the first endless conveyor belt is lower than the level of the second endless conveyor belt, the first driving portion is disposed at one end of the first rail portion, which is far away from the connecting portion, and the first driving portion drives the first endless conveyor belt on the first rail portion to transmit, and drives the second endless conveyor belt to transmit through the first driven wheel; in this scheme, first drive division is connected to the motor, and lower floor's belt in the upper and lower two-layer belt of first drive division drive is rotated by lower floor's skin and is driven the transmission through separation and reunion axle core, so more firm, the difficult roll-off of upper belt.

Optionally, the connecting portion further includes a second driven wheel and a third driven wheel, the first driven wheel, the second driven wheel and the third driven wheel are distributed in a triangular shape, the second endless conveyor belt is respectively driven by the second driven wheel, the first driven wheel and the third driven wheel, and the first driven wheel is disposed on the inner side of the second endless conveyor belt; the second driven wheel and the third driven wheel are respectively arranged on the outer sides of the second annular conveying belts; the second is followed driving wheel and third and is followed the driving wheel and be one row, sets up between first follow driving wheel and the second track portion, and the three is followed the driving wheel, is triangle-shaped and arranges more stability, and the second driven portion carries on spacingly with the third driven portion to the belt, then the difficult roll-off of second endless conveyor, can be more stable convey.

Optionally, a connecting line of the second driven wheel and the third driven wheel is parallel to the first endless belt, so that the second endless conveyor belt can transmit and rotate more smoothly.

Optionally, the distance between the second driven wheel and the third driven wheel is not greater than three times of the diameter of the axle of the first driven wheel, in the scheme, the distance between the second driven wheel and the third driven wheel is controlled not to be greater than three times of the diameter of the axle of the first driven wheel, so that the limiting effect of the second driven wheel and the third driven wheel is better, and the phenomenon that the second endless conveyor belt slides out of the track due to the fact that the distance is too large and the limiting effect is lost is prevented.

Optionally, the distance between the second driven wheel and the third driven wheel is between 0.3 times of the diameter of the axle of the first driven wheel and the diameter of the axle of the first driven wheel, and the distance is not too small, otherwise, a belt cannot be bypassed.

Optionally, the first track portion includes a first wheel, and the first wheel and the first driven wheel are respectively disposed on inner sides of two ends of the first endless conveyor belt and drive the first endless conveyor belt to rotate; the second track part comprises a second wheel and a third wheel which are respectively arranged on the inner sides of two ends of the first annular conveyor belt and used for driving the second annular conveyor belt to rotate; the third wheel is remote from the first wheel; the second wheel is adjacent to the first wheel; the two motor interfaces are respectively in driving connection with the first wheel and the third wheel; the motor can be connected with the first wheel through the motor interface and can also be connected with the third wheel through the motor interface, so that the mounting process is more convenient, and different space positions can be used.

The first annular conveying belt and the second annular conveying belt are respectively provided with at least one transmission trolley, and the transmission trolley is provided with a curtain interface for hanging a curtain; the first rail portion includes: the first side plate, the second side plate and the bottom plate are connected with the first side plate and the second side plate; the second rail portion includes: the first side plate, the second side plate and the bottom plate are connected with the first side plate and the second side plate; wherein the first side plate of the first track portion is adjacent to the first side plate of the second track portion, and the second side plate of the first track portion is opposite to the second side plate of the second track portion; the first annular conveyor belt is arranged on the bottom plate of the first track part, and the second annular conveyor belt is arranged on the bottom plate of the second track part; the first side plate is lower than the second side plate, and the bottom plate of the first track part is lower than the bottom plate of the second track part; the two transmission trolleys are respectively arranged on the two second side plates, the first track part also comprises a first fixing structure, and the transmission trolleys are fixed on the first annular conveying belt by the first fixing structure; the transmission trolley of the first track part can slide on the second side plate of the first track part; the second track part also comprises a second fixing structure, and the second fixing structure fixes the transmission trolley on the second annular conveying belt; the transmission trolley of the second track part can slide on the second side plate of the second track part; the first driven wheel comprises a clutch shaft core, the clutch shaft core comprises a first shaft and a second shaft which are coaxial, and the periphery of the first shaft is provided with clamping teeth which are meshed with the clamping teeth of the first annular conveying belt; and the periphery of the second shaft is provided with clamping teeth which are meshed with the clamping teeth of the second annular conveying belt.

In this scheme, the hold-in range can be through belt fastener drive dolly and remove about doing, so very convenient when the (window) curtain is opened or is shrink, intermeshing between belt and the axle and between the wheel in addition, is more stable at driven in-process, the phenomenon of slippage can not appear, and the slippage damages the belt and causes whole flexible orbital destruction after avoiding the belt to skid.

The present application also discloses a driving method for a retractable motorized window treatment track as described above, comprising the steps of:

the motor is started and rotates towards a first direction, the first driving part drives the first annular conveyor belt to transmit, and the first conveyor belt drives the second conveyor belt to transmit through the first driven wheel of the connecting part so as to drive the corresponding curtain on the first track and the corresponding curtain on the second track to move oppositely;

the motor is started and rotates towards the second direction, the first driving part drives the first annular conveyor belt to transmit, and the first conveyor belt drives the second conveyor belt to transmit through the first driven wheel of the connecting part so as to drive the corresponding curtain on the first track and the corresponding curtain on the second track to move in a closing mode;

wherein the first direction and the second direction are opposite.

The application also discloses an electric curtain, including motor and foretell electric curtain's flexible track, the motor sets up the drive is in motor interface department the drive division rotates.

The utility model provides a flexible orbital total length of (window) curtain is adjustable in this application, can realize not unidimensional window all can the adaptation, the stand alone type design of the first endless conveyor of its first track portion and the second endless conveyor in the second track portion, through a drive division, utilize connecting portion, realize that two independent endless conveyor rotate, thereby it opens and shuts to drive the (window) curtain, moreover, the steam generator is simple in structure and stable and reliable, be difficult to badly, the repair rate has been reduced, the mill is according to certain length range mass production, the steady quality, the production efficiency is high, can stretch out and draw back the regulation, the transportation is small, the installer is installed to home, can adjust according to actual (window) curtain length, application scope is wide, it is the same with.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of the drive of a retractable motorized window treatment of the present application;

FIG. 2 is a schematic view of a retractable motorized window treatment of the present application;

fig. 3 is a schematic view of a retractable motorized window treatment of the present application (ii);

FIG. 4 is a schematic view of the clutch core of the retractable motorized window treatment of the present application

FIG. 5 is a front view of a retractable motorized window treatment of the present application;

FIG. 6 is a schematic cross-sectional view A-A' of FIG. 5 of the present application;

FIG. 7 is a schematic view of detail A of FIG. 2 of the present application;

FIG. 8 is another schematic view of the present application taken in section A-A' of FIG. 5;

FIG. 9 is a schematic view of an opening of an endless belt of a retractable motorized window treatment of the present application;

fig. 10 is a schematic view of a method of driving a retractable motorized window treatment according to the present application.

10, a telescopic rail; 11. a motor; 100. a first rail portion; 101. a first side plate; 102. a second side plate; 103. a base plate; 104. a first base plate; 110. a motor interface; 120. a first driving section; 130. a first driven wheel; 131. a clutch shaft core; 132. a first shaft; 133. a second shaft; 140. a first endless conveyor belt; 150. a first fixed structure; 170. a first baffle plate; 200. a second rail portion; 201. a first side plate; 202. a second side plate; 203. a base plate; 204. a second base plate; 210. a second driven wheel; 220. a third driven wheel; 230. a second endless conveyor belt; 240. a second fixed structure; 260. a second baffle; 300. a connecting portion; 310. a first wheel; 320. a second wheel; 330. a third wheel; 340. a fourth wheel; 400. a transmission trolley; 500. a chute; 510. a concave hook; 511. a first protrusion; 512. a second protrusion; 520. a convex hook; 521. a third protrusion; 522. and a fourth protrusion.

Detailed Description

It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.

Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The present application is described in detail below with reference to the figures and alternative embodiments.

As shown in fig. 1, the present application discloses a motorized window treatment, which includes a motor 11 and a retractable motorized window treatment track 10, wherein the motor is disposed at the motor interface 110 to drive the first driving portion 120 of the connecting portion to rotate so as to drive the first track portion 100 or the second track portion 200 to retract under the connecting action of the connecting portion 300.

As shown in fig. 2 and 3, the present application further discloses a retractable motorized window shade track, which includes a first track portion 100 provided with a first endless belt 140, a second track portion 200 provided with a second endless belt 230, and a connecting portion 300 provided at an end of the first track portion, wherein the first track portion 100 and the second track portion 200 are capable of performing mutually parallel telescopic movement through the connecting portion, and connect the first track portion 100 and the second track portion 200, the connecting portion 300 includes a first driven wheel 130, and the first driven wheel 130 is capable of driving and connecting the first endless belt 140 and the second endless belt 230; the retractable motorized window treatment track further comprises: at least one motor interface 110, disposed at one end of the first track portion or the second track portion far from the driving connection portion; the first driving part 120 is connected with the motor interface 110, drives the first endless conveyor belt on the first track part to transmit, and drives the second endless conveyor belt to transmit through the first driven wheel; or the second annular conveying belt on the second track part is driven to transmit, and the first annular conveying belt is driven to transmit through the first driven wheel; wherein the first endless conveyor belt and the second endless conveyor belt have different levels.

The total length of the telescopic track of the curtain can be adjusted, and the windows with different sizes can be adapted, the independent design of the first annular conveying belt 140 of the first track part 100 and the independent design of the second annular conveying belt 230 of the second track part 200 realize the rotation of the two independent annular conveying belts by using the driven wheel of the connecting part 300 through the driving part 120, so that the curtain is driven to open and close, the structure is simple, stable and reliable, the damage is not easy to occur, and the repair rate is reduced; utilize connecting portion, realize that two independent endless conveyor rotate, thereby drive the (window) curtain and open and shut, moreover, the steam generator is simple in structure reliable and stable, be difficult to bad, the repair rate has been reduced, the mill is according to certain length range mass production, the steady quality, high production efficiency, can stretch out and draw back and adjust, the transportation is small, the installer installs to home, can adjust according to the (window) curtain length of reality, application scope is wide, the same with the customization, more important lie in when the not unidimensional window of adaptation, the installation that can not influence two independent endless conveyor in the position of adjusting first track portion 100 and second track portion 200, it is more convenient to install.

Further, the first track portion 100 includes a first wheel 310, and the first wheel 310 and the first driven wheel 130 are respectively disposed inside two ends of the first endless transmission belt 140, and drive the first endless transmission belt to rotate; the second track portion 200 includes a second wheel 320 and a third wheel 330, which are respectively disposed inside two ends of the second endless belt 230 and drive the second endless belt to rotate; the third wheel 330 is remote from the first wheel 310; the second wheel is adjacent to the first wheel; the two motor interfaces are respectively in driving connection with the first wheel and the third wheel and are respectively in driving connection with the first wheel and the third wheel; if the first driving wheel is the first wheel, the motor 11 may be connected to the first wheel 310 through the motor interface 110; the first driving wheel is the third wheel, so that the mounting process is more convenient in practice, and different space positions can be used; for example, when installed, the limited space on the left is not suitable for installing the motor, and the motor can be installed on the right with the third wheel as the first drive wheel.

Of course, only one motor interface is arranged, and the motor interface is in driving connection with the first wheel, so that the first driving part is the first wheel; or the motor interface is in driving connection with the third wheel, the first driving part is the third wheel, and the motor can drive the first wheel through the motor interface or drive the third wheel through the motor interface.

Further, as shown in fig. 4, the first driven wheel includes a clutch shaft core 131, and the clutch shaft core 131 includes a first shaft 132 and a second shaft 133 which are coaxial; one end of the first annular conveyor belt rotates around the first shaft of the clutch shaft core; the second annular conveying belt is wound out of the second track part and sleeved on a second shaft of the clutch shaft core to rotate; the first annular conveyor belt and the second annular conveyor belt are in transmission connection through the clutch shaft center, wherein the diameters of the first shaft and the second shaft are the same, so that the rotating speeds of the first annular conveyor belt and the second annular conveyor belt are the same, and the service life of the motor is longer.

It should be noted that, the clutch shaft core enables the two groups of synchronous belts to form integral linkage, and when the synchronous belt drive device is actually used, the two groups of synchronous belts need to be disconnected firstly, and after the track is stretched to a good length, the clutch shaft core is inserted, so that the two groups of belts are linked.

As shown in fig. 5 and 7, the level of the first endless conveyor belt is lower than that of the second endless conveyor belt, the first driving portion is disposed at an end of the first rail portion away from the connecting portion, and the first driving portion drives the first endless conveyor belt on the first rail portion to transmit, and drives the second endless conveyor belt to transmit through the first driven wheel; in this scheme, first drive division is connected to the motor, and lower floor's belt in the upper and lower two-layer belt of first drive division drive is rotated by lower floor's skin and is driven the transmission through separation and reunion axle core, so more firm, the difficult roll-off of upper belt.

Certainly, first endless conveyor with second while first endless conveyor parallel arrangement, first endless conveyor's level is less than the level of second endless conveyor, first drive division sets up second track portion is kept away from the one end of connecting portion drives second endless conveyor on the second track portion carries out the transmission and passes through first from driving wheel drives first endless conveyor transmission, thereby can select motor interface according to actual environment and select this scheme.

In order to enable the second endless transmission belt 230 to transmit more stably, as shown in fig. 7, the connection portion further includes a second driven wheel 210 and a third driven wheel 220, the first driven wheel 130, the second driven wheel 210 and the third driven wheel 220 are distributed in a triangular shape, the second endless transmission belt 230 respectively transmits through the second driven wheel 210, the first driven wheel 130 and the third driven wheel 220, and the first driven wheel 130 is disposed inside the second endless transmission belt 230; the second driven pulley 210 and the third driven pulley 220 are respectively disposed outside the second endless transmission belt 230; the second is followed driving wheel and third and is formed one row from the driving wheel, sets up between first follow driving wheel and the second track portion, and the three follow driving wheel is triangle-shaped and arranges more stability, and second driven portion carries on spacingly with the third driven portion to the belt, then the difficult roll-off of second endless conveyor belt, the second follow the line of driving wheel and third with first endless conveyor belt is parallel for the second endless conveyor belt conveys the rotation more gently.

Further considering the stability of the second endless conveyor belt during transmission, the distance d between the second driven wheel and the third driven wheel is not more than three times of the diameter of the wheel axle of the first driven wheel.

Of course, the distance between the second driven wheel and the third driven wheel is 0.3 times of the diameter of the axle of the first driven wheel to the diameter of the axle of the first driven wheel, the distance is not easy to be too small, and a belt cannot be bypassed.

As shown in fig. 8, the first rail part 100 includes: a first side plate 101, a second side plate 102, and a bottom plate 103 connecting the first side plate 101 and the second side plate 102; the second rail portion 200 includes: a first side plate 201, a second side plate 202, and a bottom plate 203 connecting the first side plate 201 and the second side plate 202; wherein the first side plate 101 of the first track portion 100 is adjacent to the first side plate 201 of the second track portion 200, and the second side plate 102 of the first track portion 100 is opposite to the second side plate 202 of the second track portion 200; the first endless belt 140 is disposed on the floor of the first track portion 100, and the second endless belt 230 is disposed on the floor of the second track portion 200; the first side plate 101 is lower than the second side plate 102, and the bottom plate of the first track part is lower than the bottom plate of the second track part; the two transmission trolleys 400 are respectively arranged on the two second side plates, the first track part 100 further comprises a first fixing structure 150, and the transmission trolleys 400 are fixed on the first endless conveyor 140 by the first fixing structure 150; the transmission trolley 400 of the first track part 100 can slide on the second side plate 102 of the first track part 100; the second track portion 200 further comprises a second fixing structure 240, the second fixing structure 240 fixing the transmission trolley 400 on the second endless conveyor belt 230; the driving carriage 400 of the second rail part 200 can slide on the second side plate of the second rail part 200. The second driven wheel 210 and the first connecting shaft 310 are only in contact with one side of the endless conveyor belt, the other side of the endless conveyor belt is used for fixing the transmission trolley 400, and the transmission trolley 400 is prevented from moving, wherein the second fixing structure is the same as the first fixing structure, the first driven wheel comprises a clutch shaft core, the clutch shaft core comprises a first shaft and a second shaft which are coaxial, and the periphery of the first shaft is provided with clamping teeth which are meshed with the clamping teeth of the first endless conveyor belt; the periphery of the second shaft is provided with clamping teeth which are meshed with the clamping teeth of the second annular conveying belt, and the belt can be prevented from slipping through the meshing of the clamping teeth.

As shown in fig. 9, a sliding groove 500 is disposed between the first rail portion 100 and the second rail portion 200, the sliding groove 500 includes a concave hook and a convex hook 520, and a concave hook 510 is disposed on a side of the first rail portion 100 close to the second rail portion 200; a convex hook 520 is arranged on one side of the second rail part 200 close to the first rail part 100, the concave hook 510 comprises a first protrusion 511 perpendicular to a side plate of the first rail part 100 and a second protrusion 512 perpendicular to the first protrusion 511, the convex hook 520 comprises a third protrusion 521 perpendicular to a side plate of the second rail part 200 and a fourth protrusion 522 perpendicular to the third protrusion 521, the second protrusion 512 is clamped in a groove formed by the third protrusion 521 and the fourth protrusion 522, the fourth protrusion 522 is clamped in a groove formed by the first protrusion 511 and the second protrusion 512, the width of the second protrusion 512 is increased from top to bottom, and the width of the fourth protrusion 522 is decreased from top to bottom, so that the design not only enables the first rail part 100 and the second rail part 200 to slide, but also the width of the second protrusion 512 is increased from top to bottom, the width of the fourth protrusion 522 is gradually decreased from top to bottom, and the second protrusion 512 and the fourth protrusion 522 are pressed against each other, so that the first rail part 100 and the second rail part 200 are attached more tightly.

In the scheme, a structure that the trolley surrounds the second side plate is directly arranged, so that the transmission trolley 400 can move on the second side plate more stably without shaking, furthermore, a sliding structure such as a pulley and the like can be arranged between the transmission trolley 400 and the second side plate so as to reduce the friction resistance, the synchronous belts can drive the trolley to move left and right through the belt buckle, so that the curtain is convenient to open or contract, in addition, the belts and the shafts are mutually meshed, the transmission process is more stable without slipping, the phenomenon of slipping is avoided, the phenomenon that the belts slip out and damage the belts to cause the damage of the whole telescopic track after the belts slip is avoided, the two groups of synchronous belts belong to an independent power closed state, the clutch shaft core enables the two groups of synchronous belts to form integral linkage, the track can cause the trolley to run out when the track is stretched, so in practical application, the two groups of belts are disconnected, after the track is stretched to a good length, the trolley is independently dragged to the two ends of the track, then the clutch shaft core is inserted, and the two groups of belts are linked, so that the moving range of the trolley corresponds to the actual length.

As shown in fig. 10, a method for driving a retractable motorized window treatment track is disclosed that may be used in any of the above embodiments, comprising the steps of:

s1: the motor is started and rotates towards a first direction, the first driving part drives the first annular conveyor belt to transmit, and the first conveyor belt drives the second conveyor belt to transmit through the first driven wheel of the connecting part so as to drive the corresponding curtain on the first track and the corresponding curtain on the second track to move oppositely;

s2: the motor is started and rotates towards the second direction, the first driving part drives the first annular conveyor belt to transmit, and the first conveyor belt drives the second conveyor belt to transmit through the first driven wheel of the connecting part so as to drive the corresponding curtain on the first track and the corresponding curtain on the second track to move in a closing mode;

wherein the first direction and the second direction are opposite.

When the motor is started, the positive rotation and the reverse rotation can be selected, namely, the rotation is carried out in opposite directions, when the motor rotates in a first direction, the motor rotates in the positive rotation direction, the first driving part drives the first annular conveying belt to carry out transmission, the first conveying belt drives the second conveying belt to carry out transmission through the first driven wheel of the connecting part, then, the transmission trolleys on the first track and the second track move in opposite directions, then, the corresponding curtains on the first track and the corresponding curtains on the second track shrink towards two sides, and therefore the curtains are opened, wherein the first direction can be the clockwise direction.

If the curtain needs to be closed, the motor is selected to rotate reversely, namely, the motor rotates towards the second direction, the structure in the motor rotates anticlockwise, the first driving portion drives the first annular conveying belt to transmit, the first conveying belt drives the second conveying belt to transmit through the first driven wheel of the connecting portion, then the transmission trolleys on the first track and the second track move close to each other, and then the curtain corresponding to the first track and the curtain corresponding to the second track are opened towards the middle, so that the curtain is closed.

Certainly, the motor does not need to rotate forward to finally enable the curtain to be contracted and opened towards two sides, and the curtain can be finally opened towards the middle when the motor rotates forward to be combined; it should be noted that, the limitations of the steps involved in the present disclosure are not considered to limit the order of the steps without affecting the implementation of the specific embodiments, and the steps written in the foregoing may be executed first, or executed later, or even executed simultaneously, and as long as the present disclosure can be implemented, all should be considered to belong to the protection scope of the present disclosure.

The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.