Anti-derailing PVC (polyvinyl chloride) fast door
By using a nylon slider and guide screw structure to restrict the door curtain, combined with a spring and anti-collision rubber strip design, the problems of PVC high-speed doors derailing in complex environments and high costs are solved, achieving flatness of the door curtain and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN YUNSHENGDA TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-08
AI Technical Summary
Existing PVC high-speed doors are prone to curtain derailment in complex environments, leading to deformation and interference of the aluminum alloy ribs, which limits their application environment and results in high production costs.
The curtain is kept in place by using nylon sliders and guide screws, eliminating the need for aluminum alloy ribs. The design incorporates springs and guide plates to ensure the curtain remains flat under the influence of the external environment, and anti-collision rubber strips are used for cushioning to avoid direct contact.
It effectively prevents the curtain from derailing, reduces production costs, expands the adaptability to different environments, and maintains the flatness and normal operation of the curtain in complex environments.
Smart Images
Figure CN224214094U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roller shutter door technology, and in particular to a PVC high-speed door that prevents derailment. Background Technology
[0002] Currently, industrial PVC high-speed doors are widely used, mainly installed in the entrance and exit channels and internal logistics channels of workshops and factories. They play a role in sound insulation, heat preservation, and wind resistance. The existing PVC high-speed door structure design is relatively simple (the door curtain is made of multiple PVC soft curtains connected by aluminum alloy ribs to form an integral door curtain, and the aluminum alloy ribs have a certain anti-bending effect). This type of structure design has certain requirements for the environment in which this type of door is used. Some complex environments cannot be used (such as: logistics door entrances with strong outdoor winds, workshop entrances with negative pressure inside, logistics door entrances with wide door openings, etc., the aluminum alloy ribs will bend and deform significantly during door operation, exceeding the design requirements). When the door curtain is opened and closed, the door curtain (4) is prone to derailment (door curtain overflows from the slide). After derailment, the aluminum alloy ribs will interfere with the connection between the slide and the door head, making it impossible to operate. It needs to be repaired (the aluminum alloy ribs are manually forced into the slide) before it can be used again.
[0003] Therefore, a structure is needed to prevent the curtain from deforming and derailing due to environmental factors during operation. This effectively solves the bottleneck of the environmental limitations of PVC soft curtain high-speed doors, making this type of industrial door applicable to a wider range of environments. Utility Model Content
[0004] The purpose of this utility model is to provide a PVC high-speed door that prevents derailment, which can confine both ends of the door curtain in the track to avoid the door curtain from going off the track (the door curtain overflowing the track) when opening and closing. In addition, it eliminates the need for aluminum alloy ribs, reduces the amount of aluminum alloy material required for the production of PVC high-speed doors, and lowers production costs.
[0005] To achieve the above objectives, a derailment-resistant PVC high-speed door is provided, comprising a sliding track, a door curtain, and a winding mechanism. A drive mechanism is installed at one end of the winding mechanism, which includes a drum driven by a motor, and the drive mechanism controls the drum's rotation. The upper end of the door curtain is fixedly wound around the drum of the winding mechanism. The sliding tracks are symmetrically and fixedly connected to the bottom two sides of the winding mechanism. The lower end of the door curtain extends through the bottom of the winding mechanism. Openings for the door curtain to enter are provided at opposite ends of the sliding tracks on both sides of the winding mechanism, and the door curtain extends into the sliding tracks through these openings. Several nylon sliding elements are equidistantly fixedly connected to both ends of the door curtain. The system consists of a nylon slider located within a slide rail. Several guide screws are threaded at equal intervals along the end of the slide rail facing the door curtain. These guide screws are located on the front and rear sides of the nylon slider. Guide plates are provided at both ends of the nylon slider, and the guide screws pass through and slidably connect to the guide plates. A groove is formed on the surface of the nylon slider to connect to the guide plates, and the nylon slider slides within the groove. A spring is provided on the outer side of each guide screw, and the guide screw passes through the middle of the spring. Both ends of the spring are fixedly connected to the guide plate and the inner wall of the slide rail, respectively. A counterweight bottom beam is installed at the bottom of the door curtain, and both ends of the counterweight bottom beam are slidably connected to the slide rail. This design effectively confines both ends of the door curtain within the slide rail, preventing the door curtain from derailing and overflowing from the slide rail during opening and closing. Furthermore, it eliminates the need for aluminum alloy ribs, reducing the amount of aluminum alloy material required for PVC high-speed door production and lowering production costs.
[0006] According to the aforementioned anti-derailment PVC high-speed door, the door curtain is an integral PVC soft curtain structure without wind-resistant ribs. Removing the wind-resistant ribs avoids the situation where the ribs deform during door operation, requiring manual repair before continued use.
[0007] According to the aforementioned anti-derailment PVC high-speed door, two anti-collision rubber strips are fixedly connected to the inner wall of the slide rail, and the two anti-collision rubber strips are respectively located on both sides of the opening of the slide rail. The anti-collision rubber strips are used to prevent the nylon slider from directly contacting the slide rail when the external wind force is too strong, causing the door curtain to deform too quickly, thus playing a buffering role.
[0008] According to the aforementioned anti-derailment PVC high-speed door, the opening width of the slide is 10mm, and the thickness of the door curtain is 0.8mm. The door curtain is the standard thickness of the PVC soft curtain used in PVC high-speed doors, and the width of the slide is greater than the thickness of the door curtain to avoid friction between the door curtain and the slide when opening and closing.
[0009] The above-mentioned solution has the following beneficial effects:
[0010] 1. The two ends of the door curtain are restricted in the track by nylon sliders to prevent the door curtain from derailing. Compared with traditional PVC high-speed doors, this device eliminates the ribs on the surface of the door curtain, reduces the amount of aluminum alloy material used in the production process of PVC high-speed doors, and lowers production costs.
[0011] 2. By utilizing the elasticity of the spring to push the guide plate on the surface of the guide screw, the curtain extending from the winding mechanism remains flat under the adjustment of minimal external environmental influences, and has a deformation reset function, making it convenient for the winding mechanism to roll up the curtain.
[0012] 3. Compared to traditional PVC high-speed doors, this device does not have nylon brushes for sealing. It is used to ensure the normal use of PVC high-speed doors in situations such as logistics doors with strong outdoor winds, workshop doors with negative pressure inside, and logistics doors with wide openings.
[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0015] Figure 1 This is a front view of a PVC high-speed door designed to prevent derailment according to this utility model.
[0016] Figure 2 This is a bottom view of a PVC high-speed door designed to prevent derailment according to this utility model.
[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0018] Figure 4 This is a perspective view of a PVC high-speed door curtain designed to prevent derailment according to this utility model.
[0019] Legend:
[0020] 1. Drive mechanism; 2. Slide rail; 3. Counterweight bottom beam; 4. Door curtain; 5. Rewinding mechanism; 6. Nylon slider; 7. Guide plate; 8. Spring; 9. Anti-collision rubber strip; 10. Guide screw. Detailed Implementation
[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0022] Reference Figure 1-4This utility model discloses an anti-derailment PVC high-speed door, comprising a slide rail 2, a door curtain 4, and a winding mechanism 5. A drive mechanism 1 is installed at one end of the winding mechanism 5. The winding mechanism 5 includes a drum driven by a motor, and the drive mechanism 1 controls the rotation of the drum. The upper end of the door curtain 4 is fixedly wound around the drum of the winding mechanism 5. The slide rail 2 is symmetrically fixedly connected to the bottom two sides of the winding mechanism 5. The lower end of the door curtain 4 extends out from the bottom of the winding mechanism 5. Openings for the door curtain 4 to enter are provided at opposite ends of the slide rail 2 on both sides of the winding mechanism 5, and the door curtain 4 extends into the slide rail 2 through the openings. A plurality of nylon sliders 6 are equidistantly fixedly connected to both ends of the door curtain 4. 6 is located in the slide 2. Several guide screws 10 are equidistantly threaded on one end of the slide 2 facing the curtain 4. The guide screws 10 are located on the front and rear sides of the nylon slider 6. Guide plates 7 are provided at both the front and rear ends of the nylon slider 6. The guide screws 10 pass through the guide plates 7 and are slidably connected to the guide plates 7. The surface of the nylon slider 6 has a groove for connecting the guide plates 7. The nylon slider 6 slides in the groove. A spring 8 is provided on the outside of the guide screws 10. The guide screws 10 pass through the middle of the spring 8. The two ends of the spring 8 are fixedly connected to the guide plates 7 and the inner wall of the slide 2, respectively. A counterweight bottom beam 3 is installed at the bottom of the curtain 4. The two ends of the counterweight bottom beam 3 are slidably connected to the slide 2, respectively.
[0023] Curtain 4 is a single PVC soft curtain structure without wind-resistant ribs. By eliminating the wind-resistant ribs, the deformation of the ribs during door operation is avoided, preventing the need for manual repair before continued use.
[0024] Two anti-collision rubber strips 9 are fixedly connected to the inner wall of the slide 2, and the two anti-collision rubber strips 9 are located on both sides of the opening of the slide 2. The anti-collision rubber strips 9 are used to prevent the nylon slider 6 from directly contacting the slide 2 when the external wind force is too strong and the door curtain 4 deforms too quickly, thus playing a buffering role.
[0025] The opening width of slide 2 is 10mm, and the thickness of curtain 4 is 0.8mm. Curtain 4 is the standard thickness of PVC soft curtain in PVC high-speed doors. The width of slide 2 is greater than the thickness of curtain 4 to avoid friction between curtain 4 and slide 2 when opening and closing.
[0026] Working principle: During use, the winding mechanism 5 controls the opening and closing of the fast door by winding and unwinding the curtain 4. The curtain 4 moves in the slide 2. When the curtain 4 moves, the nylon slider 6 on the curtain 4 slides on the guide plate 7. When the curtain 4 is deformed by external influence, the curtain 4 pulls the nylon slider 6 closer to the inner wall of the slide 2. The guide screw 10 makes the nylon slider 6 move only in a fixed direction. When the nylon slider 6 is close to the inner wall of the slide 2, the spring 8 is compressed and stored by the guide plate 7. After the external force disappears, the spring 8 is released and pushes the guide plate 7 to make the nylon slider 6 pull the curtain 4 back to flatness.
[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A derailment-resistant PVC high-speed door, comprising: The slide rail (2), curtain (4), and winding mechanism (5) are characterized in that a driving mechanism (1) is installed at one end of the winding mechanism (5), the winding mechanism (5) includes a drum driven by a motor, and the driving mechanism (1) controls the rotation of the drum, the upper end of the curtain (4) is fixedly wound around the drum of the winding mechanism (5), the slide rail (2) is symmetrically fixedly connected to the bottom two sides of the winding mechanism (5), the lower end of the curtain (4) extends out from the bottom of the winding mechanism (5), the opposite ends of the two slide rails (2) on the winding mechanism (5) are provided with openings for the curtain (4) to enter, and the curtain (4) extends into the slide rail (2) through the openings, and several nylon sliders (6) are fixedly connected at equal intervals to both ends of the curtain (4), and the nylon sliders (6) are located in the slide rail (2). A number of guide screws (10) are equidistantly threaded at one end of the slide (2) facing the curtain (4), and the guide screws (10) are located on the front and rear sides of the nylon slider (6). The front and rear ends of the nylon slider (6) are provided with guide plates (7), and the guide screws (10) pass through the guide plates (7) and are slidably connected to the guide plates (7). The surface of the nylon slider (6) is provided with a groove for connecting the guide plates (7), and the nylon slider (6) slides in the groove. The outer side of the guide screws (10) is provided with springs (8), and the guide screws (10) pass through the middle of the springs (8). The two ends of the springs (8) are fixedly connected to the guide plates (7) and the inner wall of the slide (2), respectively. The bottom of the curtain (4) is provided with a counterweight bottom beam (3), and the two ends of the counterweight bottom beam (3) are slidably connected to the slide (2).
2. The anti-derailment PVC high-speed door according to claim 1, characterized in that, The door curtain (4) is an integral PVC soft curtain structure without wind-resistant ribs.
3. The anti-derailment PVC high-speed door according to claim 1, characterized in that, The inner wall of the slide (2) is fixedly connected with two anti-collision rubber strips (9), and the two anti-collision rubber strips (9) are located on both sides of the opening of the slide (2).
4. A PVC high-speed door with anti-derailment protection according to claim 1, characterized in that, The opening width of the slide (2) is 10mm, and the thickness of the curtain (4) is 0.8mm.