Roller shutter door

Abstract

The utility model provides a roller shutter door, which relates to the field of modern buildings and comprises a roller shutter door body, a roller shutter box is arranged above the roller shutter door body, roller shutter frames are arranged on two sides of the roller shutter door body, the bottom of the roller shutter door body is connected with a door bottom structure, a stabilizing structure is arranged at the bottom of the door bottom structure, and a protective sleeve is sleeved outside the stabilizing structure to stabilize a contact surface. The stabilizing structure is configured to have a radian. According to the roller shutter door, the stable structure in the door bottom structure is in the arc design, the elastic protective sleeve is arranged outside the stable structure in a sleeving mode, the roller shutter door can be well attached to the uneven position of the ground when closed, and the gap between the bottom of the door body and the ground is effectively reduced. Compared with a traditional roller shutter door with a plane bottom, the roller shutter door with the design can obviously prevent sand wind, dust, rainwater, external cold air and the like from entering a room. Meanwhile, due to the arc-shaped design of the stable structure, the contact mode of the bottom of the door body and the ground is changed into arc-shaped contact from traditional large-area contact, friction force distribution is more concentrated, and the friction area is reduced.

Description

Technical Field

[0001] This utility model relates to the field of modern architecture, and in particular to a roller shutter door. Background Technology

[0002] In the field of modern architecture, roller shutters play a vital role as a type of door widely used in commercial shops, industrial plants, garages, and other locations. They offer numerous advantages, including flexible opening, minimal space occupation, and convenient installation, making them highly popular in the market.

[0003] However, with the increasing diversification of rolling shutter door applications and the rising performance requirements, traditional rolling shutter doors have revealed a series of problems that urgently need to be addressed. Regarding the contact between the door and the ground, the bottom of traditional rolling shutter doors is mostly flat. In actual installation environments, the ground is often difficult to achieve an ideal level, with unevenness such as small pits, gaps, and undulations. When a traditional flat-bottomed rolling shutter door is closed, it cannot adapt well to these ground variations, easily creating large gaps between the bottom of the door and the ground. This not only severely affects the door's sealing performance, allowing wind, sand, dust, rainwater, and cold air from outside to easily enter the room through these gaps, compromising the comfort and cleanliness of the indoor environment, but may also cause heat, cold air, or valuable items to be lost due to poor sealing. For example, in northern regions with high wind and sandstorms, large amounts of sand can enter the room through these gaps, causing significant difficulties in cleaning; in the rainy season in the south, rainwater leakage may damage goods or equipment inside.

[0004] Furthermore, the traditional flat bottom structure of roller shutters creates a large area of ​​frictional contact with the ground during opening and closing. This large-area friction not only generates significant frictional force, requiring greater resistance and energy consumption for opening and closing, but also easily leads to rapid wear on the bottom of the door. Therefore, a roller shutter design is proposed that better conforms to uneven ground surfaces, effectively reducing the frictional area and thus lowering frictional force. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by employing an arc-shaped design for the stabilizing structure at the bottom of the door, with an external elastic protective sleeve. This design allows the roller shutter to conform well to uneven surfaces when closed, effectively reducing gaps between the bottom of the door and the ground. Compared to traditional roller shutters with flat bottoms, this design significantly blocks wind, sand, dust, rain, and cold air from entering the room. Furthermore, the arc-shaped design of the stabilizing structure changes the contact between the bottom of the door and the ground from a large area to a curved contact, resulting in a more concentrated distribution of friction and reducing the friction area.

[0006] In order to solve the above-mentioned technical problems, the present invention solves the problem that traditional roller shutter doors cannot fit well against uneven areas at the bottom of the door body and generate greater friction through the following technical solution.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A roller shutter door includes a roller shutter door body, a roller shutter box is provided at the top of the roller shutter door body, and roller shutter frames are provided on both sides. A door bottom structure is connected to the bottom of the roller shutter door body. A stabilizing structure is provided at the bottom of the door bottom structure, and a protective sleeve is provided on the outside of the stabilizing structure to stabilize the contact surface. The stabilizing structure is constructed to have an arc.

[0009] Preferably, the top of the stabilizing structure is provided with an insert plate, which is in close contact with the bottom of the door bottom structure and generates a magnetic attraction.

[0010] Preferably, a stabilizing frame is provided between the stabilizing structure and the bottom structure.

[0011] Preferably, one end of the stabilizing frame is fitted onto the outside of the door bottom structure, and the other end is fitted onto the outside of the protective sleeve for stability.

[0012] Preferably, the outer widths of the door bottom structure, the stabilizing frame, and the stabilizing structure are all equal, and the protective sleeve is made of rubber and is adapted to the exterior of the stabilizing structure.

[0013] Preferably, buffer pads are provided at both the front and rear ends of the door bottom structure and the stabilizing frame. The top of the buffer pad is in close contact with the bottom of the door bottom structure, and the bottom of the buffer pad is constructed to present a corrugated state and contact the top of the stabilizing frame.

[0014] Preferably, a retaining plate is glued to the top of the buffer pad, and the retaining plate is inserted into the corresponding slots opened at the front and rear ends of the door bottom structure.

[0015] Preferably, the top of the card plate is glued with an end cap, and the end cap is elastic.

[0016] Preferably, a handle groove is provided in the middle of the bottom end of the door bottom structure, a handle structure is inserted into the handle groove, a limiting plate is connected to the inward end of the handle structure for limiting, the limiting plate is fastened to the door bottom structure with bolts, and a sealing protrusion is connected to the outer periphery of the limiting plate for sealing.

[0017] Preferably, the inner wall of the roller shutter door is symmetrically connected with support plates on both sides, and the support plates can extend along the inner end of the roller shutter frame to the top of the door bottom structure.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The roller shutter door provided in this application features a curved design for its stabilizing structure at the bottom, with an external elastic protective sleeve. This design allows the door to conform well to uneven surfaces when closed, effectively reducing gaps between the bottom of the door and the ground. Compared to traditional roller shutter doors with flat bottoms, this design significantly blocks wind, sand, dust, rain, and cold air from entering the room. Furthermore, the curved design of the stabilizing structure changes the contact between the bottom of the door and the ground from a large area to a curved contact, resulting in a more concentrated distribution of friction and reducing the friction area.

[0020] The buffer pad between the bottom structure and the stabilizing frame of this application can buffer the impact force on the bottom of the roller shutter when it closes. When the roller shutter closes quickly and contacts the ground, the buffer pad can absorb and disperse the impact force, protecting the bottom structure, stabilizing structure and other related components, and preventing damage to components due to frequent impacts.

[0021] The stabilizing frame in this application provides a secure connection between the door bottom structure and the stabilizing structure, preventing loosening or displacement between them during long-term use. Simultaneously, the design of components such as the buffer pad and retaining plate also helps maintain the stability of the door bottom structure, ensuring the reliability of the roller shutter door during use.

[0022] The handle structure at the bottom center of the door's base in this application facilitates the operation of the roller shutter door from both inside and outside. Whether opening or closing the roller shutter door, the user can more easily control its movement using the handle structure, improving ease of use. Furthermore, the handle structure is designed to be disassembled and installed according to actual needs, offering a degree of flexibility.

[0023] The support plates on both sides of the inner wall of the roller shutter door in this application can extend along the inner end of the roller shutter frame to the top of the door bottom structure, serving to support and stabilize the roller shutter door. During the opening and closing of the roller shutter door, the support plates help maintain the shape of the roller shutter door and the smoothness of its operation, further improving the user experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0027] Figure 3 This is a partial structural diagram showing the disassembled parts of the stabilizing structure, stabilizing frame, buffer pad, and protective sleeve of this utility model.

[0028] Figure 4 This is a schematic diagram of a partially disassembled structure of the present invention;

[0029] Figure 5 This is a partial structural diagram of the roller shutter door body, bottom structure, stabilizing frame, and buffer pad of this utility model.

[0030] Figure 6 This is a partial structural schematic diagram of the front cross-section of this utility model;

[0031] Figure 7 This is a partial structural diagram of the roller shutter door body and handle structure of this utility model;

[0032] Figure 8 This utility model Figure 7 Schematic diagram of the split local structure;

[0033] Figure 9 This is a partial structural schematic diagram of the right-side cross-section of this utility model;

[0034] Figure 10 This utility model Figure 9 A magnified structural diagram of point A in the middle.

[0035] Drawing number explanation: 1. Roller shutter door body; 101. Door bottom structure; 1011. Handle groove; 2. Roller shutter box; 3. Roller shutter frame; 301. Support plate; 4. Stabilizing structure; 401. Insertion plate; 402. Protective sleeve; 5. Stabilizing frame; 6. Buffer pad; 601. Card plate; 602. End; 7. Handle structure; 701. Limiting plate; 702. Sealing protrusion. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings.

[0037] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0038] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0039] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0040] Please see Figure 1-10 A roller shutter door includes a roller shutter door body 1, a roller shutter box 2 is provided on the top of the roller shutter door body 1, and roller shutter frames 3 are provided on both sides. A door bottom structure 101 is connected to the bottom of the roller shutter door body 1. A stabilizing structure 4 is provided at the bottom of the door bottom structure 101. A protective sleeve 402 is provided on the outside of the stabilizing structure 4 to stabilize the contact surface. The stabilizing structure 4 is constructed to have an arc.

[0041] The roller shutter door of this application is mainly composed of roller shutter door body 1, roller shutter box 2, roller shutter frame 3, stabilizing structure 4, protective sleeve 402, stabilizing frame 5 and buffer pad 6, etc. The following is a detailed description of its structure and working principle.

[0042] (a) Overall installation

[0043] First, install the roller shutter frame 3 on both sides of the building entrance. Ensure that the roller shutter frame 3 is vertical and firmly fixed to the wall; expansion bolts can be used for fixing. During installation, use a level to measure and ensure that the two roller shutter frames 3 are on the same horizontal plane, with the error controlled within the allowable range.

[0044] Next, install the roller shutter box 2 in a suitable position above the building entrance, aligning it with the roller shutter frames 3 on both sides. The roller shutter box 2 is fixed to the wall by bolts or welding, ensuring that it is securely installed and can withstand the weight of the roller shutter door 1.

[0045] Roller shutter door body 1 installation

[0046] Install the roller shutter door body 1 inside the roller shutter box 2, ensuring that its two sides mate with the roller shutter frame 3. Ensure that the roller shutter door body 1 can slide smoothly up and down within the roller shutter frame 3. During installation, pay attention to the unfolding direction and sequence of the roller shutter door body 1 to avoid jamming or twisting.

[0047] (II) Installation of door bottom structure 101 and related components

[0048] Installation of bottom structure 101 and stabilizing structure 4

[0049] The bottom structure 101 serves as the bottom connecting component of the roller shutter door body 1, ensuring a secure connection with the roller shutter door body 1 during installation. The stabilizing structure 4 is installed at the bottom of the bottom structure 101. The stabilizing structure 4 has a semi-circular design, and its top mounting plate 401 is in close contact with the bottom of the bottom structure 101, generating a magnetic attraction.

[0050] This magnetic connection method is achieved by using materials with magnetic properties on the bottom of the mounting plate 401 and the bottom of the door bottom structure 101. For example, magnets are embedded in the mounting plate 401, and the bottom of the door bottom structure 101 is made of a metal material that can be attracted by magnets. During installation, the mounting plate 401 is accurately inserted into the bottom of the door bottom structure 101, and the two are tightly connected by magnetic attraction.

[0051] 402 protective case installation

[0052] The protective sleeve 402 is fitted over the outside of the stabilizing structure 4. The protective sleeve 402 is made of rubber, and its elasticity ensures a stable contact with the ground while also better adapting to uneven surfaces. During installation, the protective sleeve 402 is inserted from one end of the stabilizing structure 4, ensuring a tight fit against the outside of the structure.

[0053] Stabilizing frame 5 installation

[0054] A stabilizing frame 5 is installed between the door bottom structure 101 and the stabilizing structure 4. One end of the stabilizing frame 5 is fitted onto the outside of the door bottom structure 101, and the other end is fitted onto the outside of the protective sleeve 402, serving to secure the connection. During installation, bolts can be used to reinforce the stabilizing frame 5 to the door bottom structure 101 and the protective sleeve 402 as needed to ensure a firm connection.

[0055] Since the outer widths of the bottom structure 101, the stabilizing frame 5, and the stabilizing structure 4 are all set to be equal, they are easy to align and assemble during installation, thus improving installation efficiency.

[0056] (III) Installation of buffer pad 6 and related components

[0057] 6-inch cushioning pad installation

[0058] Buffer pads 6 are installed at the front and rear ends between the door bottom structure 101 and the stabilizing frame 5. The top of the buffer pad 6 is in close contact with the bottom of the door bottom structure 101, and the bottom is corrugated and contacts the top of the stabilizing frame 5. The buffer pad 6 is made of rubber. During installation, the buffer pad 6 is accurately placed at the corresponding position between the door bottom structure 101 and the stabilizing frame 5.

[0059] Cardboard 601 installation

[0060] A retaining plate 601 is glued to the top of the buffer pad 6. The retaining plate 601 is inserted into the corresponding slots opened at the front and rear ends of the door bottom structure 101. An elastic end 602 is glued to the insertion end of the retaining plate 601. When the retaining plate 601 is inserted into the slot of the roller shutter door body 1, the end 602 can improve the tightness of the connection.

[0061] When installing the card plate 601, align the card plate 601 with the slots at the front and rear ends of the roller shutter door body 1, and slowly insert it to ensure that the card plate 601 is fully inserted into the slot and that the end 602 is in close contact with the slot wall to prevent the card plate 601 from coming out during use.

[0062] (iv) Installation of handle structure 7

[0063] A handle structure 7 is inserted into a handle groove 1011 formed in the middle of the bottom of the door bottom structure 101. A limiting plate 701 is connected to the inward-facing end of the handle structure 7, and the limiting plate 701 is fastened to the door bottom structure 101 by bolts. A sealing protrusion 702 is connected to the outer periphery of the limiting plate 701. During installation, the sealing protrusion 702 is in close contact with the outer wall of the door bottom structure 101 to ensure a tight seal after installation.

[0064] When installing the handle structure 7, first insert the handle structure 7 into the handle groove 1011, then align the limiting plate 701 with the door bottom structure 101, and use bolts to fix the limiting plate 701 to the door bottom structure 101. Ensure that the bolts are tightened to a moderate degree so as to ensure a firm connection without damaging the components.

[0065] (v) Installation of support plate 301

[0066] Support plate 301 installation

[0067] Support plates 301 are symmetrically connected to both sides of the inner wall of the roller shutter door body 1. The support plates 301 can extend along the inner end of the roller shutter frame 3 to the top of the door bottom structure 101. During installation, the support plates 301 are fixed to the inner wall of the roller shutter door body 1 by welding or bolting to ensure that the support plates 301 are firmly installed and symmetrically positioned, so as to play a supporting and stabilizing role during the use of the roller shutter door.

[0068] Support plate 301 installation

[0069] Support plates 301 are fixedly installed at both ends of the inner wall of the roller shutter box 2. The support plates 301 on both sides of the inner wall of the roller shutter door body 1 can extend along the inner end of the roller shutter frame 3 to the top of the door bottom structure 101, playing a role in supporting and stabilizing the roller shutter door. During the opening and closing of the roller shutter door, the support plates 301 help maintain the shape of the roller shutter door and the smoothness of its operation, further improving the user experience.

[0070] II. Working Principle

[0071] (I) Overall Operating Principle of Roller Shutter Door 1

[0072] Roller shutter door 1 opening and closing

[0073] When the roller shutter door needs to be opened, the roller shutter door body 1 slides upward along the roller shutter frame 3 via electric or manual operation, depending on the drive method of the roller shutter door, and the roller shutter door body 1 gradually rolls into the roller shutter box 2. During this process, the support plates 301 on both sides of the roller shutter door body 1 slide along the inner end of the roller shutter frame 3, playing a supporting and guiding role to ensure that the roller shutter door body 1 can be rolled up smoothly.

[0074] When it is necessary to close the roller shutter door, the operation is reversed. The roller shutter door body 1 unfolds from the roller shutter box 2 and slides down along the roller shutter frame 3 until the bottom structure 101 of the door contacts the ground, thus closing the door.

[0075] The principle of the contact between the bottom structure 101 of the second door and the ground.

[0076] Stable structure 4 in contact with the ground

[0077] When the roller shutter door is closed, the stabilizing structure 4 at the bottom of the door base structure 101 contacts the ground. Because the stabilizing structure 4 has a semi-circular design, it can better conform to uneven surfaces compared to traditional flat structures. The stabilizing structure 4 can adapt to minor undulations, gaps, or other irregular shapes in the ground.

[0078] During the contact process, the stabilizing structure 4 contacts the ground in an arc shape. This contact method makes the distribution of friction more concentrated, reducing the friction area between the bottom of the door bottom structure 101 and the ground, thereby reducing friction. This makes the roller shutter door open and close more smoothly, reducing the load on the drive system.

[0079] The function of protective case 402

[0080] The protective sleeve 402, which is made of rubber and has elasticity, is fitted over the outside of the stabilizing structure 4. When the stabilizing structure 4 is in contact with the ground, the protective sleeve 402 can further adapt to the unevenness of the ground, ensuring stability while making the bottom structure 101 fit more tightly with the ground, greatly improving the sealing performance. Moreover, when the protective sleeve 402 is worn, it can be easily removed from the stabilizing structure 4 for replacement.

[0081] (III) Working principle of each connecting component

[0082] The stabilizing frame 5 is fitted onto the outside of the door bottom structure 101 and the stabilizing structure 4, serving to securely connect them. It ensures a firm connection between the door bottom structure 101 and the stabilizing structure 4, preventing loosening or displacement during long-term use of the roller shutter door. During installation, bolts can be used for reinforcement to further enhance the connection effect of the stabilizing frame 5.

[0083] The buffer pad 6 is located between the bottom structure 101 and the stabilizing frame 5. Its top is in close contact with the bottom of the bottom structure 101, and its bottom is corrugated and contacts the top of the stabilizing frame 5. When the roller shutter door is closed, the buffer pad 6 can buffer and disperse the force on the bottom structure 101.

[0084] Because the buffer pad 6 is made of rubber, its elasticity can absorb the impact force generated when the bottom structure 101 of the door comes into contact with the ground, protecting the bottom structure 101 of the door and other related components, and extending the service life of the roller shutter door.

[0085] Functions of plate 601 and end cap 602

[0086] The clip 601, glued to the top of the buffer pad 6, is inserted into the slots at the front and rear ends of the roller shutter door body 1. The end 602 of the clip 601 is elastic. This design improves the tightness of the connection when the clip 601 is inserted into the slot of the roller shutter door body 1, preventing the clip 601 from coming out.

[0087] Meanwhile, the installation method of the card plate 601 facilitates the disassembly and replacement of the buffer pad 6. When the buffer pad 6 needs to be replaced, simply pull the card plate 601 out of the groove of the roller shutter door body 1 to easily replace the buffer pad 6.

[0088] (iv) Working principle of handle structure 7

[0089] The handle structure 7, inserted into the handle groove 1011 at the bottom center of the door bottom structure 101, facilitates the user's operation of the roller shutter door from both inside and outside. When the roller shutter door is closed, the user can open it by pulling the handle structure 7; during the opening process, the handle structure 7 also allows the user to control the opening speed and position of the roller shutter door.

[0090] The limiting plate 701 at the inward end of the handle structure 7 is fastened to the bottom structure 101 by bolts. The sealing protrusion 702 on the outer periphery of the limiting plate 701 is in close contact with the outer wall of the bottom structure 101, ensuring the sealing performance of the handle structure 7 after installation and preventing dust, rainwater, etc. from entering the interior of the roller shutter door through the connection between the handle structure 7 and the bottom structure 101.

[0091] Moreover, the handle structure 7 can be disassembled at any time. When the handle structure 7 is retracted to the bottom of the roller shutter door 1, its outward protrusion design can block it to the bottom of the roller shutter door 1, thus playing a limiting role. At the same time, it does not affect the normal use of the roller shutter door. Users can choose whether to disassemble the handle structure 7 according to the on-site installation situation and actual usage needs.

[0092] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A roller shutter door, comprising a roller shutter door body (1), characterized in that: The roller shutter door body (1) is provided with a roller shutter box (2) on the top and roller shutter frames (3) on both sides. The bottom of the roller shutter door body (1) is connected to a door bottom structure (101). The bottom of the door bottom structure (101) is provided with a stabilizing structure (4). The stabilizing structure (4) is covered with a protective sleeve (402) to stabilize the contact surface. The stabilizing structure (4) is constructed to have an arc.

2. A roller shutter door according to claim 1, characterized in that: The top of the stabilizing structure (4) is provided with a mounting plate (401), which is in close contact with the bottom of the door bottom structure (101) and generates a magnetic attraction state.

3. A roller shutter door according to claim 2, characterized in that: A stabilizing frame (5) is provided between the stabilizing structure (4) and the bottom structure (101).

4. A roller shutter door according to claim 3, characterized in that: One end of the stabilizing frame (5) is fitted outside the door bottom structure (101), and the other end is fitted outside the protective sleeve (402) for stability.

5. A roller shutter door according to claim 4, characterized in that: The outer widths of the door bottom structure (101), the stabilizing frame (5), and the stabilizing structure (4) are all set to be equal. The protective sleeve (402) is made of rubber and is adapted to the outside of the stabilizing structure (4).

6. A roller shutter door according to claim 1, characterized in that: Both the front and rear ends of the door bottom structure (101) and the stabilizing frame (5) are provided with buffer pads (6). The top of the buffer pad (6) is in close contact with the bottom of the door bottom structure (101), and the bottom of the buffer pad (6) is constructed to present a corrugated state and makes contact with the top of the stabilizing frame (5).

7. A roller shutter door according to claim 6, characterized in that: The top of the buffer pad (6) is glued with a card plate (601), which is inserted into the corresponding slots opened at the front and rear ends of the door bottom structure (101).

8. A roller shutter door according to claim 7, characterized in that: The top of the card plate (601) is glued with an end cap (602), and the end cap (602) is elastic.

9. A roller shutter door according to claim 1, characterized in that: The bottom of the door bottom structure (101) has a handle groove (1011) in the middle of the bottom. A handle structure (7) is inserted into the handle groove (1011). The inward end of the handle structure (7) is connected to a limiting plate (701) for limiting. The limiting plate (701) is fastened to the door bottom structure (101) with bolts. A sealing protrusion (702) is connected to the outer periphery of the limiting plate (701) for sealing.

10. A roller shutter door according to claim 1, characterized in that: The inner walls of the roller shutter door (1) are symmetrically connected with support plates (301), and the support plates (301) can extend along the inner end of the roller shutter frame (3) to the top of the door bottom structure (101).

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