Shutter blind lifting device

Abstract

The utility model relates to the technical field of venetian blinds, in particular to a venetian blind lifting device which comprises a shell, a transmission shaft is rotatably connected to the interior of the shell, a guide wheel is fixedly connected to the outer surface of the transmission shaft, a pull rope is in transmission connection with the outer surface of the guide wheel, and a balance weight plate is fixedly connected to one end of the pull rope. A downward pressing assembly is fixedly installed on the top of the inner wall of the shell, a driven bevel gear is fixedly connected to the outer surface of a transmission shaft, and a motor is fixedly installed on one side of the shell. The lifting device has the advantages that the motor drives the driven bevel gear to rotate through the driving bevel gear, one end of the pull rope descends, the other end of the pull rope ascends, the purpose of lifting the shutter blind is achieved, the designed transmission assembly is very simple, energy loss is small, the purpose of saving energy is achieved, the design of the balance weight plate further reduces the load of the motor, and cost is reduced. And moreover, the structure is simple, so that the cost is reduced, and popularization is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of louver blinds, and particularly relates to a lifting device for louver blinds. Background Art

[0002] The louver blind is formed by connecting and folding many thin sheets, and has the effects of shading and decoration, and is suitable for use in high-class office buildings, living rooms, hotels, villas and other places; the louver blind includes two control methods: manual and electric. The electric louver blind is a widely used louver blind. By using a motor to drive the blades to lift instead of the traditional manual transmission method of the louver blind, it has a breakthrough innovation, making it more convenient and arbitrary in the operation process.

[0003] An electric louver blind and a window structure with the electric louver blind disclosed in Chinese Patent CN117988698B. The electric louver blind and the window structure with the electric louver blind, through the arrangement of guide wheels and linkage components, drive the winding and unwinding roller to rotate by rotating the motor. The winding and unwinding roller can wind or unwind the winding and unwinding rope, so that the louver blind can be switched to the open state or the closed state; the winding and unwinding rope is wound around the guide wheel. When the winding and unwinding roller rotates to wind the winding and unwinding rope, the guide wheel is driven to slide axially along the winding and unwinding roller through the linkage component. The guide roller can guide the winding and unwinding rope, so that the winding and unwinding rope can be wound in sequence along the length direction of the winding and unwinding roller, reducing the possibility that the winding and unwinding rope is wound into a ball on the outer peripheral wall of the winding and unwinding roller and causing the winding and unwinding ropes to be entangled with each other, and further ensuring the smoothness of the subsequent unwinding of the winding and unwinding roller. However, the electric louver blind and the window structure with the electric louver blind have the following defects while solving the problems:

[0004] The structure for lifting the louver blind includes multiple transmission components. There will be energy loss in the transmission of the linkage component, and there will also be friction in the transmission of the guide rod and the guide block, resulting in energy loss. In addition, the bottom wall of the guide block abuts against the winding and unwinding seat, and there will also be energy loss during the movement. Therefore, when in use, due to its complex transmission structure, the energy loss is large, the energy-saving performance is poor, and the cost is high. Summary of the Invention

[0005] The purpose of the utility model aims to solve at least one of the technical defects described in the background art.

[0006] Therefore, an object of the utility model is to provide a lifting device for louver blinds, aiming to solve the problems that the transmission structure of the existing electric louver blind and the window structure with the electric louver blind is complex, resulting in large energy loss, poor energy-saving performance, and high cost.

[0007] To achieve the above object, an embodiment of one aspect of the present utility model provides a lifting device for a louver curtain, which includes a housing. A transmission shaft is rotatably connected inside the housing. A guide wheel is fixedly connected to the outer surface of the transmission shaft. A pulling rope is drivingly connected to the outer surface of the guide wheel. One end of the pulling rope is fixedly connected to a counterweight plate. A pressing component is fixedly installed at the top of the inner wall of the housing. A driven bevel gear is fixedly connected to the outer surface of the transmission shaft. A motor is fixedly installed on one side of the housing. A driving bevel gear is fixedly connected to the output end of the motor. The driving bevel gear meshes with the driven bevel gear.

[0008] Preferably, from any of the above solutions, a hole groove is provided at the bottom of the back surface of the housing. A roller shaft is rotatably connected to the lower part of the inner wall of the hole groove. The pulling rope is lapped on the outer surface of the roller shaft, so that the counterweight plate and the blades of the louver curtain maintain a certain distance from each other, avoiding mutual influence.

[0009] Preferably, from any of the above solutions, the pressing component includes a pressing wheel. A U-shaped rod is rotatably connected to the center of the pressing wheel. A support is fixedly connected to the top end of the U-shaped rod. A top rod is fixedly connected to the top of the support. The top end of the top rod is fixedly connected to the inner top of the housing. The top rod includes a sleeve. A piston rod is slidably connected inside the sleeve. A limiting plate is fixedly connected to the top end of the piston rod. A spring is inserted inside the sleeve, which can ensure that a downward pressure is provided to the pulling rope, and at the same time, it is convenient for the pulling rope to pass between the guide wheel and the pressing wheel during assembly.

[0010] Compared with the prior art, the advantages and beneficial effects of the present utility model are as follows:

[0011] 1. The motor drives the driven bevel gear to rotate through the driving bevel gear, so that one end of the pulling rope descends and the other end ascends, achieving the purpose of lifting the louver curtain. The transmission component of this design is very simple, so the energy loss is small, achieving the purpose of energy saving. And the design of the counterweight plate further reduces the load of the motor, so the energy saving is further improved, and the simple structure makes the cost reduced, which is conducive to promotion.

[0012] 2. The roller shaft guides the counterweight plate, so that the counterweight plate and the blades of the louver curtain maintain a certain distance. Thus, when the blades are lifted and lowered, the counterweight plate will not collide with the blades, making the lifting and lowering of the blades of the louver curtain smoother.

[0013] 3. By setting the pressing component, it can press the pulling rope into the groove on the surface of the guide wheel, thus avoiding the problem that the pulling rope disengages from the guide wheel during the lifting and lowering process.

[0014] 4. By pressing the pulling rope with the pressing wheel, when the guide wheel drives the pulling rope, the pressing wheel can rotate along with it, so the friction is small, reducing the wear of the pulling rope and extending the service life.

[0015] 5. By setting the spring, the pressing wheel is enabled to move up and down, so that during assembly, it is convenient to pass the pulling rope between the pressing wheel and the guide wheel, achieving the purpose of facilitating assembly. Moreover, with elastic support, it can prevent the downward pressure of the pressing wheel from being too large, which may cause difficulties in the rotation of the guide wheel and increase the load on the motor.

[0016] Additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. Brief Description of the Drawings

[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0018] Figure 1 is a schematic structural diagram of the present utility model.

[0019] Figure 2 is a schematic cross-sectional structural diagram of the present utility model.

[0020] Figure 3 is a schematic cross-sectional structural diagram of the housing of the present utility model.

[0021] Figure 4 is a schematic structural diagram of the pressing assembly of the present utility model.

[0022] Wherein: 1. Housing, 11. Transmission shaft, 12. Guide wheel, 13. Driven bevel gear, 14. Through hole, 15. Connecting hole, 2. Pulling rope, 21. Counterweight plate, 3. Motor, 31. Driving bevel gear, 4. Hole groove, 41. Roller shaft, 5. Pressing assembly, 51. Pressing wheel, 52. U-shaped rod, 53. Support, 54. Push rod, 541. Sleeve, 542. Piston rod, 543. Limiting plate, 544. Spring. Detailed Description of the Embodiment

[0023] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0024] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] The present utility model provides a lifting device for a louver curtain. Embodiment 1

[0026] As Figures 1-3 shown, it includes a housing 1. A transmission shaft 11 is rotatably connected inside the housing 1. Bearings are provided in both side walls of the housing 1. The transmission shaft 11 is rotatably connected inside the housing 1 through the bearings. A guide wheel 12 is fixedly connected to the outer surface of the transmission shaft 11. A pulling rope 2 is drivingly connected to the outer surface of the guide wheel 12. Anti-slip patterns are provided on the surface of the guide wheel 12, and there is friction with the pulling rope 2. Thus, when the guide wheel 12 rotates, it can drive the pulling rope 2 to move, so that one end of the pulling rope 2 rises and the other end descends. One end of the pulling rope 2 is fixedly connected to a counterweight plate 21. A through hole 14 is opened at the bottom of the housing 1. One end of the pulling rope 2 passes through the through hole 14 and is fixedly connected to the lowermost blade of the louver curtain. Thus, when the counterweight plate 21 descends, the blade at the other end of the pulling rope 2 can rise, so as to upwardly support all the blades and achieve the purpose of raising the louver curtain. A pressing component 5 is fixedly installed at the top of the inner wall of the housing 1. The pressing component 5 is located directly above the guide wheel 12 and can press the pulling rope 2 into the groove on the surface of the guide wheel 12, thereby avoiding the problem that the pulling rope 2 disengages from the guide wheel 12. At the same time, the pressing force of the pressing component 5 increases the friction between the pulling rope 2 and the guide wheel 12, thereby avoiding the problem that the counterweight plate 21 sags and causes the louver curtain to rise out of control. A driven bevel gear 13 is fixedly connected to the outer surface of the transmission shaft 11. A motor 3 is fixedly installed on one side of the housing 1. A connection hole 15 is opened on the front side of the housing 1. The output end of the motor 3 passes through the connection hole 15 and extends into the interior of the housing 1. The output end of the motor 3 is fixedly connected to a driving bevel gear 31. The driving bevel gear 31 meshes with the driven bevel gear 13. The motor 3 drives the driving bevel gear 31 to rotate, thereby driving the driven bevel gear 13 to rotate and achieving the purpose of rotating the transmission shaft 11. Embodiment 2

[0027] As Figure 3As shown in the figure, on the basis of the first embodiment, a hole groove 4 is opened at the bottom of the back surface of the housing 1. A roller shaft 41 is rotatably connected to the lower part of the inner wall of the hole groove 4. The pulling rope 2 is lapped on the outer surface of the roller shaft 41. The roller shaft 41 guides the pulling rope 2, so that a certain distance is maintained between the counterweight plate 21 and the blades of the louver curtain, so that when the blades are lifted or lowered, the counterweight plate 21 will not collide with the blades. Embodiment Three

[0028] As Figures 3-4 shown in the figure, on the basis of the first embodiment or the second embodiment, the pressing-down assembly 5 includes a pressing-down wheel 51. A U-shaped rod 52 is rotatably connected to the axis of the pressing-down wheel 51. The top end of the U-shaped rod 52 is fixedly connected to a support 53. The top of the support 53 is fixedly connected to a top rod 54. The top end of the top rod 54 is fixedly connected to the inner top of the housing 1. The top rod 54 supports the pressing-down wheel 51 through the support 53 and the U-shaped rod 52, so that the pressing-down wheel 51 presses the pulling rope 2 into the groove on the surface of the guide wheel 12.

[0029] Preferably, as Figure 4 shown in the figure, the top rod 54 includes a sleeve 541. A piston rod 542 is slidably connected inside the sleeve 541. The top end of the piston rod 542 is fixedly connected to a limit plate 543 to prevent the piston rod 542 from slipping out of the sleeve 541. A spring 544 is inserted into the sleeve 541. The spring 544 supports the piston rod 542 through the limit plate 543, so that the pressing-down wheel 51 has the ability to move up and down. Therefore, when assembling, it is convenient to pass the pulling rope 2 between the pressing-down wheel 51 and the guide wheel 12.

[0030] The working principle of the present utility model is as follows: When in use, the end of the pulling rope 2 far away from the counterweight plate 21 is fixedly connected to the lowest blade of the louver curtain. When raising the louver curtain, the motor 3 is started. Through the transmission of the driving bevel gear 31 and the driven bevel gear 13, the transmission shaft 11 drives the guide wheel 12 to rotate, thereby driving the pulling rope 2 on the surface of the guide wheel 12 to move, so that the counterweight plate 21 descends and the blade at the other end of the pulling rope 2 ascends, thereby driving all the blades of the louver curtain to ascend.

[0031] Compared with the prior art, the present utility model has the following beneficial effects compared with the prior art:

[0032] 1. The motor 3 drives the driven bevel gear 13 to rotate through the driving bevel gear 31, so that the transmission shaft 11 drives the guide wheel 12 to rotate, thereby causing one end of the pull rope 2 to descend and the other end to ascend, achieving the purpose of lifting the venetian blind. The transmission component of this design is very simple, so the energy loss is small, achieving the purpose of energy conservation. And the design of the counterweight plate 21 enables the counterweight plate 21 to pull down the blades of the venetian blind when lifting the venetian blind, further reducing the load on the motor 3. Therefore, the energy conservation performance is further improved, and the simple structure reduces the cost, which is conducive to promotion.

[0033] 2. By setting the roller shaft 41, the pull rope 2 is lapped on the roller shaft 41, and the roller shaft 41 guides the counterweight plate 21 to keep a certain distance from the blades of the venetian blind. Thus, when lifting and lowering the blades, the problem that the counterweight plate 21 collides with the blades is avoided, and the lifting and lowering of the blades of the venetian blind are smoother.

[0034] 3. By setting the pressing component 5, it can press the pull rope 2 into the groove on the surface of the guide wheel 12, thereby avoiding the problem that the pull rope 2 disengages from the guide wheel 12 during the lifting and lowering process.

[0035] 4. The pressing component 5 includes a pressing wheel 51. By pressing the pull rope 2 with the pressing wheel 51, when the guide wheel 12 drives the pull rope 2, the pressing wheel 51 can rotate accordingly, with small friction, reducing the wear of the pull rope 2 and extending its service life.

[0036] 5. By setting the spring 544, the pressing wheel 51 has the ability to move up and down. Thus, during assembly, it is convenient to pass the pull rope 2 through between the pressing wheel 51 and the guide wheel 12, achieving the purpose of convenient assembly. And the elastic support can prevent the downward pressure of the pressing wheel 51 from being too large, which may cause difficulties in the rotation of the guide wheel 12 and increase the load on the motor 3.

Claims

1. A venetian blind lifting device, comprising a housing (1), characterized in that: The housing (1) is rotatably connected to a transmission shaft (11), the outer surface of the transmission shaft (11) is fixedly connected to a guide wheel (12), the outer surface of the guide wheel (12) is transmission-connected to a pull rope (2), one end of the pull rope (2) is fixedly connected to a counterweight plate (21), a pressing assembly (5) is fixedly mounted on the top of the inner wall of the housing (1), the outer surface of the transmission shaft (11) is fixedly connected to a driven bevel gear (13), a motor (3) is fixedly mounted on one side of the housing (1), an output end of the motor (3) is fixedly connected to an active bevel gear (31), and the active bevel gear (31) meshes with the driven bevel gear (13).

2. The blind lifting device according to claim 1, characterized in that: A through hole (14) is provided at the bottom of the housing (1), and one end of the pull rope (2) passes through the through hole (14).

3. The blind lifting device according to claim 1, characterized in that: A connection hole (15) is provided on the front side of the housing (1), and the output end of the motor (3) passes through the connection hole (15) to the interior of the housing (1).

4. The blind lifting device according to claim 1, characterized in that: A hole groove (4) is provided at the bottom of the back side of the shell (1), a roller (41) is rotatably connected below the inner wall of the hole groove (4), and the pull rope (2) is overlapped on the outer surface of the roller (41).

5. The blind lifting device according to claim 1, characterized in that: The pressing assembly (5) comprises a pressing wheel (51), the axis of which is rotatably connected to a U-shaped rod (52), the top end of which is fixedly connected to a support (53), the top of which is fixedly connected to a push rod (54), the top end of which is fixedly connected to an inner top of the housing (1).

6. The blind lifting device according to claim 5, characterized in that: The push rod (54) comprises a sleeve (541), the interior of the sleeve (541) is slidably connected to a piston rod (542), the top end of the piston rod (542) is fixedly connected to a limiting plate (543), and the interior of the sleeve (541) is plugged with a spring (544).

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