High-load electric roller shutter

Abstract

The utility model discloses a high-load electric roller shutter which comprises a reel pipe (1), fabric is wound on the outer side of the reel pipe (1), a first support (2) and a second support (3) are arranged at the two ends of the reel pipe (1) respectively, a spring assembly is arranged at one end of the reel pipe (1), the outer side end of the spring assembly is connected with the first support (2), the inner side end of the spring assembly is connected with the reel pipe (1), and a tubular motor (4) is arranged at the other end of the reel pipe (1). The outer side end of the tubular motor (4) is connected with the second support (3), and the inner side end of the tubular motor (4) is connected with the reel pipe (1). Ribs (5) are arranged on the hole wall of the reel pipe (1), a first sleeve (6) and a second sleeve (7) are arranged at the two ends of the reel pipe (1) respectively, and first sliding grooves (8) are formed in the peripheral face of the first sleeve (6) and the peripheral face of the second sleeve (7) respectively. The utility model has the advantage of higher load.

Description

Technical Field

[0001] This utility model belongs to the field of electric roller blinds, and in particular relates to a high-load electric roller blind. Background Technology

[0002] The existing structure of an electric roller blind includes a roller tube with fabric wound around its outer side. A first bracket and a second bracket are located at opposite ends of the roller tube. One end of the roller tube is rotatably connected to the first bracket, and a tubular motor is located inside the other end. The outer end of the tubular motor is connected to the second bracket, and the inner end (output end) of the tubular motor is connected to the roller tube. Its working principle is that the electric roller blind is fixed to the corresponding installation position by the first and second brackets. The tubular motor drives the roller tube to rotate, causing the fabric on the roller tube to unwind or rewind. When the fabric is unwinding, the electric roller blind is in the open state; when the fabric is rewinding, the electric roller blind is in the closed state. In practical applications, due to the output torque limitation of the tubular motor, the weight of the fabric on the roller tube cannot be very large, especially when the fabric is completely unwinding. The fabric is concentrated on one radial side of the roller tube, and the torque exerted by the fabric on the roller tube under gravity can easily exceed the output torque of the tubular motor, potentially causing the tubular motor to be unable to drive the roller tube to rewind the fabric. However, some projects require not only large-width motorized roller blinds but also heavy-duty fabrics, which makes it difficult for existing motorized roller blinds to meet the requirements, thus significantly limiting their applicable scenarios. Therefore, existing roller blinds have the drawback of low load capacity. Utility Model Content

[0003] The purpose of this invention is to provide a high-load electric roller blind. This invention has the advantage of high load capacity.

[0004] The technical solution of this utility model is as follows: a high-load electric roller blind, including a roller tube, with fabric wound around the outer side of the roller tube, and a first bracket and a second bracket respectively provided at both ends of the roller tube. The roller tube is characterized in that: a spring assembly is provided at one end of the roller tube, the outer end of the spring assembly is connected to the first bracket, the inner end of the spring assembly is connected to the roller tube, and a tubular motor is provided at the other end of the roller tube, the outer end of the tubular motor is connected to the second bracket, and the inner end of the tubular motor is connected to the roller tube.

[0005] In the aforementioned high-load electric roller shutter, the roller tube is made of aluminum profile, and the roller tube has ribs on the hole wall. The two ends of the roller tube are respectively provided with a first sleeve and a second sleeve. Both the first sleeve and the second sleeve are inserted into the roller tube. The outer circumferential surface of the first sleeve and the outer circumferential surface of the second sleeve are provided with a first sliding groove that cooperates with the ribs.

[0006] In the aforementioned high-load electric roller shutter, the outer ends of the first sleeve and the outer ends of the second sleeve both extend radially outward to form flanges, and the outer diameter of the flanges does not exceed the outer diameter of the roller tube.

[0007] In the aforementioned high-load electric roller shutter, the spring assembly includes a tube shaft located inside the first sleeve, a fixing plate located between the first bracket and the first sleeve at the outer end of the tube shaft, a passive drive block inside the roller tube, and a spiral spring between the passive drive block and the fixing plate.

[0008] In the aforementioned high-load electric roller blind, a guide rod is provided on the inner side of the spring, the outer end of the guide rod is connected to a fixing plate, and the other end of the guide rod passes through the passive drive block.

[0009] In the aforementioned high-load electric roller blind, the inner end of the guide rod is provided with a notch, and elastic hook rods are formed on both sides of the notch. The ends of the hook rods extend radially outward to form a buckle.

[0010] In the aforementioned high-load electric roller blind, the inner end of the tubular motor is connected to the roller tube through an active drive block, and a second sliding groove that cooperates with the rib is provided on the outer peripheral surface of both the active drive block and the passive drive block.

[0011] In the aforementioned high-load electric roller shutter, both the first bracket and the second bracket are L-shaped. The vertical plate of the first bracket is provided with a first insert plate for connecting the fixing plate, and the vertical plate of the second bracket is provided with a second insert plate for connecting the tubular motor. Mounting holes are provided on both the horizontal plate of the first bracket and the horizontal plate of the second bracket.

[0012] In the aforementioned high-load electric roller shutter, two sealing rings are provided between the tube shaft and the first sleeve, and multiple oil storage grooves are provided on the outer circumferential surface of the tube shaft or the inner circumferential surface of the first sleeve, with the oil storage grooves located between the two sealing rings.

[0013] Compared with existing technologies, this invention adds a spring assembly to the existing electric roller blind. When the fabric is fully rolled up, the spring assembly has no torque output. After the tubular motor drives the roller tube to lower the fabric, the rotation of the roller tube deforms the spring in the spring assembly, which then provides torque to the roller tube. The torque of the spring assembly increases with the amount of fabric that has come off, offsetting the torque generated by the weight of the fabric on the roller tube. This minimizes the impact of fabric weight on the tubular motor, ensuring that the tubular motor can operate normally in both forward and reverse directions. A heavier amount of fabric can be used on the roller tube, increasing the load capacity of the roller blind. Therefore, this invention has the advantage of higher load capacity.

[0014] Furthermore, by improving the structure of the spring assembly, the structure of the spring assembly is simplified, the cost of the spring assembly is reduced, and the assembly of the spring assembly is made easier. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of this utility model.

[0016] Figure 2 This is a schematic diagram of the cross-section of this tube.

[0017] Figure 3 This is a schematic diagram of the first set of pipes.

[0018] Figure 4 This is a schematic diagram of the second sleeve.

[0019] Figure 5 This is a schematic diagram of the passive drive block.

[0020] The labels in the attached diagram are as follows: 1-Rolled tube, 2-First support, 3-Second support, 4-Tube motor, 5-Rib, 6-First sleeve, 7-Second sleeve, 8-First slide groove, 9-Flange, 10-Hollow shaft, 11-Fixing plate, 12-Passive drive block, 13-Spring, 14-Guide rod, 15-Notch, 16-Hook rod, 17-Snap fastener, 18-Active drive block, 19-Second slide groove, 20-First insert plate, 21-Second insert plate, 22-Mounting hole, 23-Sealing ring, 24-Oil reservoir. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] Example: A high-load electric roller blind, such as Figure 1 As shown, the device includes a coiled tube 1 formed by cutting an aluminum profile. A fabric is wound around the outside of the coiled tube 1. Ribs 5 are provided on the wall of the coiled tube 1. A first sleeve 6 and a second sleeve 7 are provided at both ends of the coiled tube 1. Both the first sleeve 6 and the second sleeve 7 are inserted into the end of the coiled tube 1. A first groove 8 that mates with the ribs 5 is provided on the outer circumferential surface of the first sleeve 6 and the outer circumferential surface of the second sleeve 7. The outer ends of the first sleeve 6 and the second sleeve 7 extend radially outward to form flanges 9 that fit against the end face of the coiled tube 1. The outer diameter of the flanges 9 does not exceed the outer diameter of the coiled tube 1. The flanges 9 are used for axial positioning of the sleeves.

[0023] The two ends of the coil tube 1 are respectively provided with a first support 2 and a second support 3. Both the first support 2 and the second support 3 are made of steel plates bent into an L shape. The vertical plate of the first support 2 is provided with a first insert plate 20, the vertical plate of the second support 3 is provided with a second insert plate 21, and the horizontal plate of the first support 2 and the horizontal plate of the second support 3 are provided with mounting holes 22.

[0024] One end of the coil tube 1 is equipped with a spring assembly, and the other end of the coil tube 1 is equipped with a tubular motor 4. The tubular motor 4 and the second sleeve 7 are in clearance fit.

[0025] The spring assembly includes a tube shaft 10 located inside the first sleeve 6, which is rotatably connected to the first sleeve 6. A fixing plate 11 is provided at the outer end of the tube shaft 10 between the first bracket 2 and the first sleeve 6. The middle part of the fixing plate 11 protrudes inward and enters the tube shaft 10. A first insert plate 20 is inserted into the outer wall of the fixing plate 11. A passive drive block 12 is provided inside the coil tube 1. A spiral spring 13 is provided between the passive drive block 12 and the fixing plate 11. The two ends of the spring 13 are fixed to the passive drive block 12 and the fixing plate 11, respectively. A guide rod 14 is provided on the inner side of the spring 13. The outer end of the guide rod 14 is connected to the fixing plate 11. The other end of the guide rod 14 passes through the passive drive block 12 and is rotatably connected to the passive drive block 12. A notch 15 is provided on the inner end of the guide rod 14. Elastic hook rods 16 are formed on both sides of the notch 15. The ends of the hook rods 16 extend radially outward to form a buckle 17, which prevents the passive drive block 12 from axially dislodging. The guide rod 14 prevents the spring 13 from contacting the winding tube 1 after twisting, ensuring smooth rotation of the winding tube 1. The hook rod 16 and the buckle 17 facilitate the assembly of the passive drive block 12 onto the guide rod 14.

[0026] Two sealing rings 23 are provided between the tube shaft 10 and the first sleeve 6. Multiple oil reservoirs 24 are provided on the outer circumferential surface of the tube shaft 10 or the inner circumferential surface of the first sleeve 6. The oil reservoirs 24 are filled with grease and are located between the two sealing rings 23. The sealing rings 23 prevent grease leakage, maintaining low friction between the tube shaft 10 and the first sleeve 6 for extended periods, thus reducing rotational resistance.

[0027] The inner end of the tubular motor 4 is connected to the coil tube 1 through the active drive block 18. The outer peripheral surface of the active drive block 18 and the outer peripheral surface of the passive drive block 12 are provided with a second sliding groove 19 that cooperates with the rib 5. The outer end of the tubular motor 4 is provided with a slot that cooperates with the second insert plate 21.

[0028] The rib 5 is integrally formed with the coil tube 1 during aluminum profile extrusion; the fixing plate 11, hollow shaft 10, hook rod 16 and buckle 17 are formed on the same part by injection molding.

[0029] The tubular motor 4, the first bracket 2, and the second bracket 3 in the embodiment are all commercially available components.

[0030] Working Principle: The electric roller blind is fixed to the corresponding installation position using screws passing through the mounting holes 22. The tubular motor 4 drives the active drive block 18 to rotate forward, which in turn drives the roller tube 1 to rotate forward, causing the fabric to detach from the roller tube 1. The roller tube 1 then drives the passive drive block 12 to rotate, deforming the spring 13 and providing a reverse torque to the roller tube. As the number of forward rotations of the roller tube 1 increases, the torque of the spring 13 increases. At the same time, the amount of fabric on the horizontal side of the roller tube 1 increases, and the weight of the fabric provides the forward torque for the roller tube 1. Ideally, the torque of the spring 13 and the torque generated by the weight of the fabric cancel each other out. The operation of the tubular motor 4 is only affected by the friction between the parts and is basically unaffected by the weight of the fabric, greatly improving the load-bearing capacity of the roller blind.

Claims

1. A high-load motorized roller blind, comprising a roller tube (1), the outer side of which is wound with a fabric, both ends of the roller tube (1) are respectively provided with a first support (2) and a second support (3), characterized in that: One end of the winding pipe (1) is provided with a spring assembly, the outer side end of the spring assembly is connected with the first support (2), the inner side end of the spring assembly is connected with the winding pipe (1), the other end of the winding pipe (1) is provided with a tubular motor (4), the outer side end of the tubular motor (4) is connected with the second support (3), the inner side end of the tubular motor (4) is connected with the winding pipe (1).

2. The high load power roller shade of claim 1, wherein: The material of the winding pipe (1) is aluminum profile, the hole wall of the winding pipe (1) is provided with a rib (5), the two ends of the winding pipe (1) are respectively provided with a first sleeve (6) and a second sleeve (7), the first sleeve (6) and the second sleeve (7) are inserted into the winding pipe (1), the outer peripheral surface of the first sleeve (6) and the outer peripheral surface of the second sleeve (7) are both provided with a first sliding groove (8) matched with the rib (5).

3. The high load power roller shade of claim 2, wherein: The outer side end of the first sleeve (6) and the outer side end of the second sleeve (7) are both radially outwardly extended to form a flange (9), the outer diameter of the flange (9) is not more than the outer diameter of the winding pipe (1).

4. The high load power roller shade of claim 2 or 3, wherein: The spring assembly comprises a pipe shaft (10) located in the first sleeve (6), the outer side end of the pipe shaft (10) is provided with a fixed plate (11) located between the first support (2) and the first sleeve (6), the winding pipe (1) is provided with a passive driving block (12), the passive driving block (12) and the fixed plate (11) are provided with a spiral spring (13) in front of them.

5. The high load power roller shade of claim 4, wherein: The inner side of the spring (13) is provided with a guide rod (14), the outer side end of the guide rod (14) is connected with the fixed plate (11), the other end of the guide rod (14) penetrates through the passive driving block (12).

6. The high load power roller shade of claim 5, wherein: The inner side end of the guide rod (14) is provided with a notch (15), the two sides of the notch (15) form elastic hook rods (16), the end of the hook rod (16) is radially outwardly extended to form a buckle (17).

7. The high load power shade of claim 4, wherein: The inner side end of the tubular motor (4) is connected with the winding pipe (1) through a driving block (18), the outer peripheral surface of the driving block (18) and the outer peripheral surface of the passive driving block (12) are both provided with a second sliding groove (19) matched with the rib (5).

8. The high load power roller shade of claim 5, wherein: The first support (2) and the second support (3) are both L-shaped, the vertical plate of the first support (2) is provided with a first plug plate (20) connected with the fixed plate (11), the vertical plate of the second support (3) is provided with a second plug plate (21) connected with the tubular motor (4), the horizontal plate of the first support (2) and the horizontal plate of the second support (3) are both provided with a mounting hole (22).

9. The high load power shade of claim 4, wherein: Two sealing rings (23) are arranged between the pipe shaft (10) and the first sleeve (6), a plurality of oil storage grooves (24) are arranged on the outer peripheral surface of the pipe shaft (10) or the inner peripheral surface of the first sleeve (6), and the oil storage grooves (24) are located between the two sealing rings (23).

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