Transmission device for double winders of double-layer shutter

Abstract

The utility model discloses a transmission device for double winders of a double-layer page curtain, which belongs to the technical field of curtains and comprises a transmission box, a lead screw and a transmission module. At least two driving rods penetrate through the transmission box, and the driving rods are used for driving a winder to rotate; each driving rod is provided with a transmission module, the transmission module comprises a first transmission wheel, the first transmission wheel is in threaded connection with the lead screw, and the first transmission wheel is in transmission connection with the corresponding driving rod, so that the driving rod drives the first transmission wheel to rotate or the first transmission wheel drives the driving rod to rotate; and the first transmission wheels of different transmission modules are clamped through the spiral clamping parts of the first transmission wheels. The transmission device for the double winders of the double-layer curtain solves the problem that two curtains of an existing double-layer curtain do not play a role in limiting, so that the curtains are pulled wrongly.

Description

Technical Field

[0001] The utility model relates to the technical field of curtains, and particularly relates to a transmission device of a double wire winder for a double-layer page curtain. Background Art

[0002] With the improvement of living standards, people's requirements for the grade of indoor decoration supplies such as curtains are getting higher and higher. In order to meet the requirements that during the day, the curtain can block light and at the same time maintain a certain degree of light transmittance, and at night, the curtain can completely block light and maintain absolute concealment, double-layer page curtains have emerged.

[0003] Chinese invention patent with the application number 201110142415.9 discloses "A Double-Layer Curtain", which includes an upper rail, a first curtain and a second curtain, and they are respectively driven by different driving ends. The first curtain is a light-transmitting woven curtain, and the second curtain is an opaque linen curtain. When strong light shielding is not required during the day, only the first curtain needs to be pulled down. However, since the first curtain and the second curtain can move independently and there is no limiting effect between them, it is easy to accidentally pull the second curtain, causing the opaque linen curtain to descend; when it is realized that the wrong curtain has been pulled, the wrongly pulled second curtain needs to be retracted and then the first curtain needs to be lowered. Therefore, the existing double-layer curtains have the problem of pulling the wrong curtain. Content of the Utility Model

[0004] In order to overcome the defects existing in the prior art, the utility model provides a transmission device of a double wire winder for a double-layer page curtain to solve the above problems.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a transmission device of a double wire winder for a double-layer page curtain, which includes a transmission box, a lead screw and a transmission module arranged in the transmission box;

[0006] At least two driving rods pass through the transmission box, and the driving rods are used to drive the wire winder to rotate;

[0007] Each driving rod is provided with a transmission module. The transmission module includes a first transmission wheel, the first transmission wheel is in threaded connection with the lead screw, and the first transmission wheel is in transmission connection with the corresponding driving rod, so that the driving rod drives the first transmission wheel to rotate or the first transmission wheel drives the driving rod to rotate. The first transmission wheels of different transmission modules are clamped through their own spiral clamping parts.

[0008] Preferably, the transmission module further includes a second transmission wheel, the second transmission wheel is sleeved on the driving rod, and the second transmission wheel is meshed with the first transmission wheel.

[0009] Optionally, the second transmission wheel is provided with a polygonal limiting hole penetrating through itself, the driving rod is a polygonal cylinder matched with the polygonal limiting hole, and the driving rod passes through the polygonal limiting hole so that the second transmission wheel can slide along the length direction of the driving rod.

[0010] Specifically, the transmission module further includes a housing, and both the first transmission wheel and the second transmission wheel are arranged in the housing.

[0011] It should be noted that a guide groove is provided on the outer wall of the housing, a guide rail is provided on the inner wall of the transmission box, the guide rail is parallel to the lead screw, and the guide groove is slidably connected to the guide rail.

[0012] Preferably, among two adjacent first transmission wheels arranged on the lead screw, the spiral directions of the spiral engaging portions provided on their opposite surfaces are opposite to form complementary engaging positions.

[0013] The beneficial effects of the present utility model are as follows: In the transmission device of the double-winding device for double-layer page curtains, the winding devices on different driving rods are connected to different page curtains, so that different page curtains are driven to lift and lower through different winding devices. The first page curtain is a light-transmitting curtain, and the second page curtain is an opaque curtain. When both the first page curtain and the second page curtain are retracted, their corresponding first transmission wheels are engaged through their own spiral engaging portions. Thus, when the transmission module corresponding to the first page curtain is driven alone, since the transmission module corresponding to the second page curtain does not move, and is tightly clamped on the lead screw through a threaded connection, the transmission module corresponding to the first page curtain cannot move towards the direction of the transmission module corresponding to the second page curtain. Similarly, when the transmission module corresponding to the second page curtain is driven alone, the transmission module corresponding to the second page curtain cannot move towards the direction of the transmission module corresponding to the first page curtain. Thus, only when the transmission module corresponding to the first page curtain moves away from the direction of the transmission module corresponding to the second page curtain, and the engagement between the first transmission wheels corresponding to the two transmission modules is lost, can the transmission module corresponding to the second page curtain approach the transmission module corresponding to the first page curtain under the drive of the driving rod. Therefore, taking the movement of the transmission module corresponding to the first page curtain away from the direction of the transmission module corresponding to the second page curtain as the action of pulling down the first page curtain, and the movement of the transmission module corresponding to the second page curtain towards the direction of the transmission module corresponding to the first page curtain as the action of pulling down the second page curtain, the function that the second page curtain can only be pulled down after the first page curtain is pulled down can be realized. Conversely, the function that the first page curtain can only be retracted after the second page curtain is retracted can also be realized, thereby avoiding the problem of pulling the wrong curtain. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the transmission device of the double-winding device for double-layer page curtains in an embodiment of the present utility model;

[0015] Figure 2 Schematic diagram of the structures of the drive rod, lead screw and transmission module in an embodiment of the present utility model;

[0016] Figure 3 Schematic diagram of the structures of the drive rod, lead screw and transmission module in another embodiment of the present utility model;

[0017] Figure 4 Schematic diagram of the structure of the first transmission wheel in an embodiment of the present utility model;

[0018] Figure 5 Schematic diagram of the structure of the transmission module in an embodiment of the present utility model;

[0019] Figure 6 Cross-sectional view of the transmission device of the double wire winder for the double-layer page curtain in an embodiment of the present utility model;

[0020] Figure 7 Schematic diagram of the structure of the double-layer page curtain guide rail in an embodiment of the present utility model;

[0021] Figure 8 Cross-sectional view of the transmission device of the double wire winder for the double-layer page curtain in another embodiment of the present utility model;

[0022] In the figure: 1 transmission box; 11 guide rail; 2 drive rod; 3 lead screw; 4 transmission module; 41 first transmission wheel; 411 spiral clamping part; 42 second transmission wheel; 421 polygonal limiting hole; 43 housing; 431 guide groove; 5 wire winder. Detailed implementation manners

[0023] The following further describes the detailed implementation manners of the present utility model with reference to the accompanying drawings. It should be noted here that the description of these implementation manners is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various implementation manners of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] As Figure 1-8 shown, a transmission device of a double wire winder for a double-layer page curtain includes a transmission box 1, and a lead screw 3 and a transmission module 4 arranged in the transmission box 1;

[0025] At least two drive rods 2 pass through the transmission box 1. As Figure 7 shown, the drive rod 2 is used to drive the wire winder 5 to rotate;

[0026] Each drive rod 2 is provided with a transmission module 4. The transmission module 4 includes a first transmission wheel 41. The first transmission wheel 41 is threadedly connected to the lead screw 3, and the first transmission wheel 41 is drivingly connected to the corresponding drive rod 2, so that the drive rod 2 drives the first transmission wheel 41 to rotate or the first transmission wheel 41 drives the drive rod 2 to rotate. The first transmission wheels 41 of different transmission modules 4 are clamped by their own spiral clamping portions 411.

[0027] In the transmission device of the double-winding device for the double-layer page curtain, the winding devices 5 on different drive rods 2 are connected to different page curtains, so that different page curtains are driven to rise and fall by different winding devices 5. The first page curtain is a light-transmitting curtain, and the second page curtain is an opaque curtain. When both the first page curtain and the second page curtain are retracted, their corresponding first transmission wheels 41 are clamped by their own spiral clamping portions 411. Thus, when the transmission module 4 corresponding to the first page curtain is driven alone, since the transmission module 4 corresponding to the second page curtain does not move, and is clamped to the lead screw 3 by threaded connection, the transmission module 4 corresponding to the first page curtain cannot move in the direction of the transmission module 4 corresponding to the second page curtain. Similarly, when the transmission module 4 corresponding to the second page curtain is driven alone, the transmission module 4 corresponding to the second page curtain cannot move in the direction of the transmission module 4 corresponding to the first page curtain. Thus, only when the transmission module 4 corresponding to the first page curtain moves away from the transmission module 4 corresponding to the second page curtain, and the clamping between the first transmission wheels 41 corresponding to the two transmission modules 4 is lost, can the transmission module 4 corresponding to the second page curtain approach the transmission module 4 corresponding to the first page curtain driven by the drive rod. Therefore, taking the movement of the transmission module 4 corresponding to the first page curtain away from the transmission module 4 corresponding to the second page curtain as the action of pulling down the first page curtain, and the movement of the transmission module 4 corresponding to the second page curtain towards the transmission module 4 corresponding to the first page curtain as the action of pulling down the second page curtain, the function that the second page curtain can only be pulled down after the first page curtain is pulled down can be realized. Conversely, the function that the first page curtain can only be retracted after the second page curtain is retracted can also be realized, thus avoiding the problem of pulling the wrong curtain.

[0028] It should be noted that, as Figure 2 、 3 and shown in 5, the transmission module 4 further includes a second transmission wheel 42. The second transmission wheel 42 is sleeved on the drive rod 2, and the second transmission wheel 42 meshes with the first transmission wheel 41. When the drive rod 2 rotates, it can drive the second transmission wheel 42 to rotate, and then drive the first transmission wheel 41 to rotate through the second transmission wheel 42, so that the first transmission wheel 41 moves along the length direction of the lead screw 3. In this embodiment, as Figure 6As shown, the two second drive wheels 42 are not on the same horizontal plane, so that the drive rods 2 provided on different second drive wheels 42 are not on the same horizontal plane, or as Figure 8 shown, the two second drive wheels 42 are on the same horizontal plane, so that the drive rods 2 provided on different second drive wheels 42 can be on the same horizontal plane.

[0029] Preferably, as Figure 2 , 3 and Figure 5 show, the second drive wheel 42 is provided with a polygonal limiting hole 421 penetrating itself, the drive rod 2 is a polygonal cylinder matching with the polygonal limiting hole 421, and the drive rod 2 passes through the polygonal limiting hole 421 so that the second drive wheel 42 can slide along the length direction of the drive rod 2. By matching the polygonal limiting hole 421 with the drive rod 2 in the shape of a polygonal cylinder, the second drive wheel 42 and the drive rod 2 can be kept stationary in the direction perpendicular to the length of the drive rod 2, and at the same time, the second drive wheel 42 can move relative to the drive rod 2 in the length direction of the drive rod 2. In this way, it can be ensured that the drive rod 2 and the second drive wheel 42 can rotate synchronously, and the second drive wheel 42 can also slide along the length direction of the drive rod 2.

[0030] Optionally, as Figure 5 shown, the transmission module 4 further includes a housing 43, and the first drive wheel 41 and the second drive wheel 42 are both arranged in the housing 43. The housing 43 plays a role in protecting the first drive wheel 41 and the second drive wheel 42. In addition, after the first drive wheel 41 and the second drive wheel 42 are both arranged in the housing 43, the first drive wheel 41 and the second drive wheel 42 can slide synchronously along the length direction of the lead screw 3.

[0031] Specifically, as Figure 5 and 6 shown, the outer wall of the housing 43 is provided with a guide groove 431, the inner wall of the transmission box 1 is provided with a guide rail 11, the guide rail 11 is parallel to the lead screw 3, and the guide groove 431 is slidably connected with the guide rail 11. Through the cooperation of the guide groove 431 and the guide rail 11, a guiding effect can be achieved, so that the housing 43 can only move along the length direction of the lead screw 3.

[0032] It should be noted that, as Figure 1 and 4 shown, among the two adjacent first drive wheels 41 arranged on the lead screw 3, the spiral directions of the spiral engaging portions 411 arranged on their opposite faces are opposite to form complementary positions. Thus, the two adjacent first drive wheels 41 can be clamped tightly.

[0033] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A transmission device for a double wire-winder of a double-layer page curtain, characterized in that: It includes a transmission box, a lead screw and a transmission module arranged in the transmission box; At least two drive rods pass through the transmission box, and the drive rods are used to drive the wire winder to rotate; Each drive rod is provided with a transmission module. The transmission module includes a first transmission wheel. The first transmission wheel is threadedly connected to the lead screw. The first transmission wheel is drivingly connected to the corresponding drive rod so that the drive rod drives the first transmission wheel to rotate or the first transmission wheel drives the drive rod to rotate. The first transmission wheels of different transmission modules are clamped through their own spiral clamping parts.

2. The drive device of a double wire-winder for a double-layer page curtain according to claim 1, characterized in that: The transmission module further includes a second transmission wheel. The second transmission wheel is sleeved on the drive rod, and the second transmission wheel meshes with the first transmission wheel.

3. The drive device of a double-wire winder for a double-layer page curtain according to claim 2, characterized in that: The second transmission wheel is provided with a polygonal limiting hole penetrating through itself. The drive rod is a polygonal cylinder matching with the polygonal limiting hole. The drive rod passes through the polygonal limiting hole so that the second transmission wheel can slide along the length direction of the drive rod.

4. The drive device of a double-wire winder for a double-layer page curtain according to claim 2, characterized in that: The transmission module further includes a housing. The first transmission wheel and the second transmission wheel are both arranged in the housing.

5. The transmission device of a double-winding device for a double-layer page curtain according to claim 4, characterized in that: The outer wall of the housing is provided with a guide groove, and the inner wall of the transmission box is provided with a guide rail. The guide rail is parallel to the lead screw, and the guide groove is slidably connected to the guide rail.

6. The drive device of a double wire-winder for a double-layer page curtain according to claim 1, characterized in that: Among two adjacent first transmission wheels arranged on the lead screw, the spiral directions of the spiral clamping parts arranged on their opposite faces are opposite to form complementary clamping positions.

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