Winding shaft for wind-resistant roller shutter door

Abstract

The utility model provides a reel for a wind-resistant roller shutter door, and belongs to the technical field of roller shutter doors. The problem of how to improve the adaptability of the scroll on the premise of ensuring the service life of the roller shutter is solved. According to the rolling shaft, the basic shaft is adopted as a main body, each roller shutter door uses the basic shaft with the same size, the fixed flange plate is sleeved on the basic shaft, and the flange plate is adaptive to different shutter sheets by customizing the size of the flange plate, so that the adaptability of the rolling shaft is improved. The blind pieces of the roller shutter door are wound on the flange plate, the step part is designed on the flange plate, the step part protrudes relatively to form the height difference H with the flange plate, the initial blind pieces are fixed to one side of the step part, and the blind pieces are hidden through the step part; in this way, during winding, the curtain pieces of the initial circle surround the flange plate to form the innermost circle with the height close to that of the step part, the second circle is wound around the outer side of the step part, the problem that the curtain pieces of the first circle partially protrude is solved, the service life of the roller shutter is guaranteed, and meanwhile the adaptability of the rolling shaft is improved.

Description

Technical Field

[0001] This utility model belongs to the field of roller shutter technology, and relates to a wind-resistant roller shutter door, and more particularly to a roller for a wind-resistant roller shutter door. Background Technology

[0002] Existing roller shutters consist of components such as slats, rollers, and transmissions. The rollers are typically made from round tubes, and their thickness is usually calculated based on the slat dimensions. Therefore, the roller size is generally not fixed and needs to be adjusted according to the slat width and the overall diameter of the rolled-up shutter (i.e., selecting a round tube of appropriate diameter). This results in poor adaptability. Furthermore, existing slats have a certain thickness after processing. Directly fixing the slats to the roller without a smooth transition causes uneven stress on the slats after they are spirally wound. This uneven stress at the initial fixing point leads to friction between the slats, resulting in scratches and paint peeling, affecting the overall appearance of the roller shutter. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a roller for wind-resistant roller shutter doors. It solves the technical problem of improving roller adaptability while ensuring the service life of the roller shutter.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A wind-resistant roller shutter door roller is characterized in that it includes a base shaft and a plurality of flanges, wherein the outer diameter of each flange is larger than the diameter of the base shaft, each flange has an inner hole and all flanges are evenly fitted onto the base shaft through the inner hole, and each flange is circumferentially fixed to the base shaft, each flange has a stepped portion protruding in the circumferential direction, at least one side of the top surface of the stepped portion has a height difference H between it and the outer circumferential surface of the flange, and a positioning element for fixing the curtain slats is provided on the flange near the height difference H.

[0006] The roller in this application uses a base shaft as the main body. Each roller shutter door uses a base shaft of the same size. A fixed flange is fitted on the base shaft. By customizing the size of the flange, the flange can be adapted to different curtain slats, thereby improving the adaptability of the roller.

[0007] In this application, the slats are all wound onto a flange. By designing a stepped section on the flange, the stepped section protrudes and forms a height difference H between itself and the flange. The initial slats are fixed to one side of the stepped section, and the stepped section is used to hide the slats. In this way, during winding, the initial loop of slats surrounds the flange to form the innermost loop with a height close to that of the stepped section. The second loop is wound around the outside of the stepped section. This solves the problem of the first loop of slats protruding locally, ensuring the service life of the roller blind while improving the adaptability of the roller.

[0008] In the aforementioned type of wind-resistant roller shutter door roller, the top surface of the stepped portion has an arc-shaped structure with a curvature similar to that of the outer circumference of the flange.

[0009] The top surface curvature of the stepped section in this application is similar to the outer circumference curvature of the flange. This design allows the subsequent curtain slats to better fit the stepped section during winding, thereby reducing friction and ensuring the service life of the roller blind.

[0010] In the aforementioned wind-resistant roller shutter door roller, one side of the top surface of the stepped portion is connected to the outer peripheral surface of the flange via a vertical side, the aforementioned height difference H is the length of the vertical side, and the other side of the top surface of the stepped portion extends in an arc shape to coincide with the outer peripheral surface of the flange.

[0011] The side of the stepped section is connected to the flange via a vertical side. The initial slats are positioned close to the vertical side, which can be well hidden there. The height difference H at the vertical side is used to allow the subsequent rolled slats to connect smoothly, reduce friction, and ensure the service life of the roller blind.

[0012] In the aforementioned wind-resistant roller shutter door roller, the flange includes a support plate and a mounting ring plate. The inner hole is formed on the support plate. The support plate is cut to form a stepped groove in the circumferential direction. The mounting ring plate is bent to fit the contour of the support plate, and the two are fixed by welding.

[0013] The support disc has a disc-shaped structure with an inner hole in the center. This disc structure is lightweight and has high support strength. The stepped groove can be formed directly by cutting, and the mounting ring can be welded along the outline of the disc to form the stepped part. It is very convenient to process and can be designed and processed to fit different roller shutter doors, thus further improving adaptability.

[0014] In the aforementioned wind-resistant roller shutter door roller, one outer edge of the mounting ring is welded to the support disc, and the positioning element is located on the mounting ring.

[0015] The mounting ring of this application is welded to the side edge of the support plate, which leaves a larger area for the installation of positioning components, making it easier to fix them to the curtain slats later.

[0016] In the aforementioned wind-resistant roller shutter door roller, several evenly spaced ribs are fixed circumferentially between the inner side of the mounting ring and the support disc.

[0017] In the aforementioned wind-resistant roller shutter door roller, the ribs are L-shaped and both ends are fixed by welding and mounting rings and support discs.

[0018] In the aforementioned wind-resistant roller shutter door roller, the flange has a positioning hole on the side near the height difference H, and the positioning element is a bolt connected to the positioning hole by a thread.

[0019] The positioning component of this application is a bolt. The bolt passes through the initial curtain slat and is screwed into the positioning hole to fix the curtain slat to the roller. This connection method is efficient and stable.

[0020] In the aforementioned wind-resistant roller shutter door roller, the positioning element and the positioning hole are reinforced by welding.

[0021] After the positioning component is screwed into the positioning hole, it is then reinforced by welding. This fixing method results in a structure with high strength and excellent stability.

[0022] In the aforementioned wind-resistant roller shutter door roller, the head of the bolt protrudes outside the positioning hole and the protrusion height is similar to the height difference H.

[0023] The bolt head is arc-shaped and its protrusion height is close to that of the positioning part. This design reduces friction between the subsequently wound curtain and the bolt, which can effectively improve the service life of the roller blind.

[0024] The beneficial effects of this utility model are:

[0025] 1. This roller uses a base shaft as the main body. Each roller shutter door uses a base shaft of the same size. A fixed flange is fitted on the base shaft. By customizing the size of the flange, the flange can be adapted to different curtain slats, thereby improving the adaptability of the roller.

[0026] 2. All the slats are wound on the flange. By designing a stepped section on the flange, the stepped section protrudes and forms a height difference H between itself and the flange. The initial slats are fixed to one side of the stepped section, and the slats are hidden by the stepped section. This solves the problem of the first loop of slats protruding locally, ensuring the service life of the roller blind while improving the adaptability of the roller.

[0027] 3. The head of the bolt is arc-shaped and its protrusion height is close to that of the positioning part. This design reduces the friction between the subsequently wound curtain and the bolt, which can effectively improve the service life of the roller blind. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the scroll of this utility model;

[0029] Figure 2 This is a side view of the flange of this utility model;

[0030] Figure 3 This is another side view of the flange of this utility model.

[0031] In the figure: 1. Base shaft; 2. Flange; 21. Inner hole; 22. Stepped section; 23. Vertical side; 24. Support plate; 25. Mounting ring; 26. Rib; 27. Positioning hole; 3. Positioning element. Detailed Implementation

[0032] like Figures 1-3 The roller for a wind-resistant roller shutter door, as shown, includes a base shaft 1 and four flanges 2. The base shaft 1 is made of a circular tube of fixed diameter, with rotating shafts welded to both ends of the tube to connect with bearing seats on the roller shutter door. The outer diameter of each flange 2 is larger than the diameter of the base shaft 1. Each flange 2 has an inner hole 21, and all flanges 2 are evenly spaced and fitted onto the base shaft 1 through the inner holes 21. Each flange 2 is circumferentially fixed to the base shaft 1. Preferably, the flanges 2 are fixed to the base shaft 1 by welding, with welding around the inner hole 21 to the base shaft 1, resulting in high strength. Each flange 2 has a stepped portion 22 protruding circumferentially. At least one side of the top surface of the stepped portion 22 has a height difference H between it and the outer circumferential surface of the flange 2. A positioning element 3 for fixing the curtain slats is provided on the flange 2 near the height difference H. The roller of this application uses a base shaft 1 as the main body. Each roller shutter door uses a base shaft 1 of the same size. A fixed flange 2 is fitted on the base shaft 1. By customizing the size of the flange 2, it can be adapted to different slats, thereby improving the adaptability of the roller. The slats of this application are all wound on the flange 2. By designing a stepped part 22 on the flange 2, the stepped part 22 protrudes and forms a height difference H between itself and the flange 2. The initial slats are fixed to one side of the stepped part 22, and the stepped part 22 is used to hide the slats. In this way, when winding, the initial loop of slats surrounds the flange 2 to form the innermost loop with a height close to that of the stepped part 22. The second loop is wound around the outside of the stepped part 22. This solves the problem of the first loop of slats protruding locally, ensuring the service life of the roller shutter while improving the adaptability of this roller.

[0033] Furthermore, the top surface of the step portion 22 has an arc-shaped structure similar to the curvature of the outer circumference of the flange 2. The curvature of the top surface of the step portion 22 in this application is similar to the curvature of the outer circumference of the flange 2. This design allows the subsequent curtain slats to better fit the step portion 22 during winding, thereby reducing friction and ensuring the service life of the roller blind.

[0034] Furthermore, one side of the top surface of the step portion 22 is connected to the outer peripheral surface of the flange 2 via a vertical side surface 23. The aforementioned height difference H is the length of the vertical side surface 23. The other side of the top surface of the step portion 22 extends in an arc shape to coincide with the outer peripheral surface of the flange 2. The side of the step portion 22 is connected to the flange 2 via the vertical side surface 23. The initial curtain slats are positioned close to the vertical side surface 23, which allows them to be well concealed at the vertical side surface 23. The height difference H at the vertical side surface 23 is utilized to ensure smooth connection of the subsequently wound curtain slats, reducing friction and ensuring the service life of the roller blind.

[0035] Furthermore, the flange 2 includes a support disc 24 and a mounting ring 25. An inner hole 21 is formed on the support disc 24. The support disc 24 is cut to form a stepped groove in the circumferential direction. The mounting ring 25 is bent to fit the contour of the support disc 24, and the two are fixed by welding. The support disc 24 has a disc-shaped structure with an inner hole 21 in its center. This disc structure is lightweight and has high support strength. The stepped groove can be formed directly by cutting, and the mounting ring 25 can be welded along the contour of the disc to form the aforementioned stepped part 22. It is very convenient to process and can be designed and processed to fit different roller shutter doors, further improving adaptability.

[0036] Furthermore, one outer edge of the mounting ring 25 is welded to the support disc 24, and the positioning element 3 is located on the mounting ring 25. The mounting ring 25 in this application is welded to the support disc 24 along its side edge, which leaves a larger area for the positioning element 3 to be installed, making it easier to fix it to the curtain slats later.

[0037] Furthermore, a plurality of evenly spaced ribs 26 are fixed circumferentially between the inner side of the mounting ring 25 and the support disc 24. Preferably, the ribs 26 have an L-shaped structure and both ends are fixed to the mounting ring 25 and the support disc 24 by welding. The design of the ribs 26 compensates for the support strength of the side-welded mounting ring 25 and further improves the welding strength between the mounting ring 25 and the support disc 24.

[0038] Furthermore, flange 2 has a positioning hole 27 on the side near the height difference H, and the positioning element 3 is a bolt connected to the positioning hole 27 by threads. The positioning element 3 of this application uses a bolt to fix the curtain to the roller by passing the bolt through the initial curtain and screwing it into the positioning hole 27. This connection method is efficient and stable. Preferably, the positioning element 3 and the positioning hole 27 are reinforced by welding. After the positioning element 3 is screwed into the positioning hole 27, a secondary welding reinforcement is performed, resulting in a fixing method with high structural strength and excellent stability.

[0039] Furthermore, the bolt head protrudes beyond the positioning hole 27, and the protrusion height is similar to the height difference H. The bolt head is arc-shaped, and the protrusion height is close to that of the positioning part. This design reduces friction between the subsequently wound curtain slats and the bolt, effectively improving the service life of the roller blind.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the basic principles, main features, and advantages of this utility model have been shown and described above, which should be understood by those skilled in the art.

Claims

1. A roller for a wind-resistant roller shutter door, characterized in that, The device includes a base shaft (1) and several flanges (2). The outer diameter of each flange (2) is larger than the diameter of the base shaft (1). Each flange (2) has an inner hole (21), and all flanges (2) are evenly spaced on the base shaft (1) through the inner hole (21). Each flange (2) is circumferentially fixed to the base shaft (1). Each flange (2) has a stepped portion (22) protruding in the circumferential direction. At least one side of the top surface of the stepped portion (22) has a height difference H between it and the outer circumferential surface of the flange (2). A positioning element (3) for fixing the curtain slats is provided on the flange (2) near the height difference H.

2. The roller for a wind-resistant roller shutter door according to claim 1, characterized in that, The top surface of the stepped part (22) has an arc-shaped structure with a curvature similar to that of the outer circumference of the flange (2).

3. The roller for a wind-resistant roller shutter door according to claim 2, characterized in that, One side of the top surface of the stepped portion (22) is connected to the outer peripheral surface of the flange (2) via a vertical side surface (23), where the height difference H is the length of the vertical side surface (23), and the other side of the top surface of the stepped portion (22) extends in an arc shape to coincide with the outer peripheral surface of the flange (2).

4. A roller for a wind-resistant roller shutter door according to any one of claims 1-3, characterized in that, The flange (2) includes a support plate (24) and a mounting ring (25). The inner hole (21) is formed on the support plate (24). The support plate (24) is cut to form a stepped groove in the circumferential direction. The mounting ring (25) is bent to fit the contour of the support plate (24) and the two are fixed by welding.

5. The roller for a wind-resistant roller shutter door according to claim 4, characterized in that, The outer edge of one side of the mounting ring (25) is welded to the support plate (24), and the positioning member (3) is located on the mounting ring (25).

6. The roller for a wind-resistant roller shutter door according to claim 5, characterized in that, A number of evenly spaced ribs (26) are fixed circumferentially between the inner side of the mounting ring (25) and the support plate (24).

7. The roller for a wind-resistant roller shutter door according to claim 6, characterized in that, The rib (26) has an L-shaped structure and both ends are fixed by welding and mounting ring (25) and support disc (24).

8. The roller for a wind-resistant roller shutter door according to claim 7, characterized in that, The flange (2) has a positioning hole (27) on the side near the height difference H, and the positioning element (3) is fixed at the positioning hole (27).

9. A roller for a wind-resistant roller shutter door according to claim 8, characterized in that, The positioning element (3) is a bolt and is fixed to the positioning hole (27) by welding.

10. A roller for a wind-resistant roller shutter door according to claim 9, characterized in that, The head of the bolt protrudes from the positioning hole (27) and the protrusion height is similar to the height difference H.

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