Roll-type screen door and its connection device
The connection device with stopper sheets and grooved extension members addresses the wrinkling issue in roll-up screen doors, ensuring smooth operation and stability, thereby extending the net's service life and resisting external forces.
Patent Information
- Application Number
- JP2025520810
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2022-11-10
- Publication Date
- 2025-11-05
AI Technical Summary
Conventional roll-up screen doors are prone to wrinkling due to the interaction of cleaning brush strips with films attached to the net, leading to operational issues and potential irreversible deformations.
A connection device with stopper sheets and grooved extension members guides the net into the side frames, preventing wrinkles by accommodating the stopper sheets and ensuring smooth operation, while weight members stabilize the movable frame for stable movement.
The solution prevents wrinkles, ensures smooth operation, extends the net's service life, and maintains stability under external forces, including strong winds.
Smart Images
Figure 2025536255000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a roll-up device for door and window curtains, and more particularly to a roll-up screen and its connecting device. [Background technology]
[0002] As shown in Figure 1, a conventional roll screen door 1 includes a housing 10 that surrounds and defines an installation space 100, a shaft 11 provided within the installation space 100, a net 12 wound around the shaft 11 so that it can be unrolled, an operating member 13 connected to the end of the net 12 remote from the housing 10 for pulling, and two side frames 14 connected to opposite ends of the housing 10 and that, together with the housing 10, surround and define a shielding area Z that the net 12 will shield after it is unrolled. Each side frame 14 surrounds and defines an inner space 140, within which an anti-lift rail is provided. The net 12 includes a net main body 121 and two films 122 attached to the left and right sides of the net main body 121 to stabilize the entire net 12 when rolled up or pulled and prevent it from lifting up from the side frames 14. When the net 12 is expanded in a direction away from the housing 10 by pulling the operating member 13, the net main body 121 moves in these inner spaces 140, and the films 122 attached to the net main body 121 can slide on the anti-lift rails in these inner spaces 140, so that the net 12 will not come off from the inner spaces 140 of the side frames 14 due to the impact of external forces or the blowing of strong winds.
[0003] Furthermore, it is considered that, after a long period of use, foreign matter such as dust and sand may adhere to the net 12 outside the arrangement space 100. To prevent the accumulation of foreign matter from affecting operation, as shown in FIG. 2, a cleaning brush strip 19 is usually provided at the outlet of the arrangement space 100, which moves relatively to the net 12 when the net 12 is rolled up or pulled, thereby preventing the foreign matter from being brought into the arrangement space 100 when the net 12 is rolled up.
[0004] However, although the cleaning brush strip 19 can achieve the purpose of cleaning foreign matter, the height of the cleaning brush strip 19 is high enough to achieve a cleaning effect on the net body 121. Therefore, the films 122 separately attached to the net body 121 are pressed by the cleaning brush strip 19. Therefore, if the net body 121 is not relatively flat, wrinkles are likely to occur in the net body 121 near the films 122. If wrinkles occur in the net body 121, continuing to roll up or pull the net 12 is likely to cause the net 12 to unfold or roll up unsmoothly. Furthermore, irreversible wrinkles may occur in the net body 121, affecting its appearance and quality and potentially making subsequent operations difficult. This requires improvement. Particularly when used in a roll-up screen door with a flip cover, wrinkles are more likely to occur in the net body 121 near the films 122 when the net body 121 enters the side frame 14. Summary of the Invention [Problem to be solved by the invention]
[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a roll-up screen and a connecting device therefor that effectively prevent the occurrence of wrinkles. [Means for solving the problem]
[0006] The connection device for a roll-up screen door of the present invention includes a main body and a first insertion part connected to the main body, with a first stopper part extending from one side of the main body. At least one stopper sheet part extends from one end of the first stopper part, and the stopper sheet part and the first stopper part are arranged in parallel and spaced apart to form a rail.
[0007] The roll-up screen door of the present invention includes two side frames, a movable frame, a net, a winding mechanism, and a connecting device connected to the side frames. The two side frames are arranged parallel to each other and spaced apart. The movable frame can move between the two side frames. The winding mechanism includes a housing base fixedly arranged between the two side frames and having an inner space, and a fixed base connected to the housing base. A roll is provided in the inner space, and the roll is connected to one end of the net, and the other end of the net is connected to the movable frame, so that the net can be unrolled or rolled up between the two side frames when the movable frame moves between them. The connecting device is provided on both ends of the fixed base. At least one end of the roll is provided with an extension member, which has a groove formed in the extension member, and at least one weight member is provided within the movable frame. [Effects of the Invention]
[0008] The beneficial effects of the present invention are as follows: Even if stopper sheets are attached to the net to stabilize the entire winding or pulling and prevent the net from lifting up from the side frames, the rails formed by the stopper sheet portion and the first stopper portion of each connecting device can accommodate these stopper sheets of the net, thereby guiding the net to enter the side frames and preventing wrinkles from occurring. Another advantage of the present invention is that the extension member provided on the roll is provided with a groove, and by designing the groove, it is possible to increase the capacity for accommodating the mesh stopper sheet, thereby increasing the length of the mesh, and also to guide the mesh stopper sheet into the space of the groove, allowing the mesh to be unrolled and rolled up more smoothly. Further advantages of the present invention are as follows: At least one weight member is provided within the movable frame to increase the weight of the movable frame, so that when the present invention is applied to an electric rolling screen door, the movable frame can be raised and lowered stably when unfolding the screen. [Brief explanation of the drawings]
[0009] [Figure 1] FIG. 10 is a perspective view showing a conventional roll device. [Figure 2] 2 is a partial schematic view showing, together with FIG. 1, a state in which a flannel strip is separately attached to the roll device. [Figure 3] 1 is a perspective view showing an embodiment of a roll-up screen door according to the present invention. [Figure 4] FIG. 10 is a schematic diagram showing that the side frames in this embodiment are provided with traction wires, and the state in which these traction wires are provided. [Figure 5] FIG. 2 is an exploded perspective view showing the winding mechanism of the embodiment. [Figure 6] FIG. 2 is an incomplete cross-sectional view showing a roll of the winding mechanism. [Figure 7] 1 is a partially enlarged perspective view showing one embodiment of a connecting device for a roll-up screen door according to the present invention. [Figure 8] 2 is a schematic diagram showing the relative position between the embodiment of the roll-up screen door connecting device of the present invention and the screen. FIG. [Figure 9] 10 is a cross-sectional view showing a state in which one stopper sheet of the net is inside the rail. FIG. [Figure 10] 10 is a schematic diagram showing a state in which one stopper sheet of the net is within one of the side frames. FIG. DETAILED DESCRIPTION OF THE INVENTION
[0010] Figure 3 shows one embodiment of a roll-up screen door according to the present invention, which has two side frames 31 arranged parallel to each other at a distance, a movable frame 32 arranged movably between these side frames 31, a net 33 connected at one end to the movable frame 32, fixed frames 34 (see Figure 5) each having opposite ends connected to the side frames 31, a winding mechanism 4 that winds up the net 33, and two connection devices 5 of the roll-up screen door according to the present invention, each connected to one of the side frames 31 (only one can be seen in Figure 3 due to the viewing angle).
[0011] As shown in Figures 3 and 4, adjustment members 311 are provided at the ends of the side frames 31 opposite to the ends connected to the connection devices 5, and pulling wires 312 are provided, one end of which is connected to the adjustment members 311. As shown in Figure 4, the other end of each pulling wire 312 opposite to the adjustment member 311 passes through the side frame 31 and the movable frame 32, and is then fixedly connected to the winding mechanism 4 via the side frame 31. The tension of the pulling wires 312 can be adjusted at any time by the adjustment members 311. Furthermore, by adjusting the tension of the pulling wires 312 using the adjustment members 311, the movable frame 32 can be maintained in a stable state without tilting.
[0012] The net 33 in this embodiment includes a net 331 for generating a shielding effect and two stopper sheets 332 provided parallel to the end faces of the net 331. The positions of these stopper sheets 332 correspond to the respective side frames 31, and the stopper sheets 332 may be sheets made of a flexible material such as a film or a metal sheet.
[0013] As shown in Figures 3, 4, and 5, the winding mechanism 4 includes a housing base 41 having an inner space 410, a fixed base 42 connected to the housing base 41, and a roll 49 provided in the inner space 410 and connected to one end of the net 33. As shown in Figure 6, in this embodiment, extension members 491 are provided on opposite ends of the roll 49 (only one end is shown in Figure 6). Each extension member 491 is provided with a groove 499. When the net 33 is wound onto the roll 49, the stopper sheets 332 of the net 33 are wound and housed in the groove 499, so that the net 33 is wound onto the roll 49 relatively flat. Furthermore, by designing the groove 499 of the extension member 491, the stopper sheet 332 of the net 33 can be guided into the space of the groove 499, which not only allows the net 33 to be unfolded or rolled up more smoothly, but also increases the capacity of the net 33 to accommodate the stopper sheet 332, thereby increasing the usable length of the net 33 and providing a net 33 with a longer length that can be used by the user.
[0014] In this embodiment of operating a roll-up screen door according to the present invention, the pulling wires 312 are adjusted by the adjusting members 311 to maintain appropriate tension, so that when manually operating the movable frame 32, the movable frame 32 can be stably gripped and the net 33 can be pulled in accordance with the operation of the winding mechanism 4, allowing the net 33 to be unfolded or rolled up more smoothly. Furthermore, when the roll-up screen door according to the present invention is applied to technology having an electric function, the roll 49 of the winding mechanism 4 is provided with a motor (not shown) that provides power to pull the net 33, and the motor can rotate the roll 49 in conjunction with the roll 49 to rotate the net 33, allowing the user to achieve the purpose of unfolding or rolling up the net 33 without manually operating the movable frame 32. Furthermore, at least one weight member (not shown) can be separately attached inside the movable frame 32 of the roll-up screen door of the present invention, and the weight of the weight member can help stabilize the movable frame 32 when it moves. In particular, when the roll-up screen door of the present invention is applied to technology with an electric function, by providing the weight member when unfolding the net 33, the movable frame 32 can maintain a stable state when it moves up and down.
[0015] Figure 7 shows an embodiment of the connecting device 5 of the roll-up screen door according to the present invention. Specifically, as shown in Figures 5 and 7, in this embodiment, the connecting devices 5 are provided on both ends of the fixed base 42 of the winding mechanism 4, and each connecting device 5 includes a main body 50 and a first insertion portion 51 connected to the main body 50. A first stopper portion 501 extends from one side of the main body 50, and a stopper sheet portion 509 extends from one end of the first stopper portion 501. The stopper sheet portion 509 and the first stopper portion 501 are arranged parallel to each other with a gap between them to form a rail 500. A second insertion portion 52 extends from the side surface of the first stopper portion 501 facing the first insertion portion 51, and the second stopper portion 502 extends from the other side surface of the main body 50, with the second stopper portion 502 and the first stopper portion 501 being arranged in parallel and spaced apart to form a channel 505. A third insertion portion 53 extends from the side surface of the second stopper portion 502 facing the second insertion portion 52, and the third insertion portion 53 and the second insertion portion 52 being arranged in parallel and spaced apart.
[0016] 7, 8, and 9, in this embodiment, the connection between the connecting device 5 and the side frame 31 is achieved by, but not limited to, inserting the first insertion portion 51, the second insertion portion 52, and the third insertion portion 53 into the internal space 310 of the side frame 31. Even if the connecting device 5 only has the first insertion portion 51, it can be inserted into the internal space 310 of the side frame 31 and connected to the side frame 31. The diameter of the end of the connecting device 5 that enters the internal space 310 of the side frame 31 fits the opening of the channel 505 of the connecting device 5. Therefore, when the net 33 is wound up by the winding mechanism 4, the net 33 can enter and move through the channel 505 of the connecting device 5 into the internal space 310 of the side frame 31.
[0017] Furthermore, as shown in Figures 8 to 10, the rail 500 of the connection device 5 is connected to the anti-lift rail 319 provided in the internal space 310 of the side frame 31, and since the spacing between the anti-lift rail 319 and the rail 500 is the same at the connection point, the individual stopper sheets 332 of the net 33 corresponding to each of the side frames 31 are accommodated in the rail 500 of the individual connection device 5, and can enter and move into the anti-lift rail 319 of the side frame 31 via the rail 500. When these stopper sheets 332 are properly accommodated in the rails 500 of the connection device 5 and the anti-lift rails 319 of the side frames 31, even if a cleaning brush strip 39 is provided as shown in FIG. 8, the stopper sheet portion 509 of the connection device 5 limits the deformation space of the stopper sheet 332, preventing wrinkles from occurring. This allows the net 33 to always remain flat. Therefore, when the net 33 is rolled up or pulled, the net 331 is less likely to be wrinkled due to the movement of these stopper sheets 332. This not only makes operation smoother, but also prevents wrinkles from occurring in the net 331, which will affect its service life. Furthermore, the net 331 will not lift up from the internal space 310 of the side frames 31 even when subjected to external impacts or strong winds.
[0018] As described above, with regard to the roll screen door and its connecting device 5 according to the present invention, in the above embodiment in which the roll screen door connecting device 5 according to the present invention is installed, the stopper sheets 332 of the net 33 can be properly accommodated and smoothly guided when operating the roll screen door according to the present invention, preventing wrinkles from forming in the net 331 due to movement. As a result, even when the cleaning brush strip 39 is installed in consideration of cleaning the net 331, smooth operation of the net 33 is ensured, the service life of the net 33 can be extended, and the net 331 will not lift up from the internal space 310 of the side frame 31 even when subjected to external impacts or strong winds. Therefore, the object of the present invention can be reliably achieved.
[0019] The above is merely an example of the present invention and does not limit the scope of the present invention. Simple equivalent changes and modifications made based on the claims and the contents of the patent specification of the present invention all belong to the scope of the claims of the present invention.
Claims
1. A connecting device for a roll-up screen door, comprising a main body and a first insertion portion connected to the main body, a first stopper portion extending from one side of the main body, at least one stopper sheet portion extending from one end of the first stopper portion, the stopper sheet portion and the first stopper portion being arranged parallel and spaced apart to form a rail.
2. 2. The connecting device according to claim 1, wherein a second insertion portion is provided extending from a side surface of the first stopper portion facing the first insertion portion.
3. 3. The connection device according to claim 2, wherein a second stopper portion extends from the other side of the main body, and the second stopper portion and the first stopper portion are arranged parallel to each other and spaced apart to form a channel.
4. The connection device according to claim 3, characterized in that a third insertion portion is extended from the side of the second stopper portion facing the second insertion portion, and the third insertion portion and the second insertion portion are arranged parallel to each other and spaced apart.
5. The winding mechanism includes two side frames, a movable frame, a net, a winding mechanism, and a connecting device connected to the side frames, the winding mechanism including: a housing base having an inner space, a roll provided in the inner space, the roll connected to one end of the net, and the other end of the net connected to the movable frame; A roll screen having the connection device according to any one of claims 1 to 4, comprising: a fixed base connected to the housing base and having the connection device provided at each end thereof.
6. 6. The roll screen door according to claim 5, further comprising a fixed frame, both ends of which are connected to one end of each of the side frames.
7. 7. The roll screen door according to claim 5 or 6, wherein an extension member is provided on at least one end of the roll, and the extension member is provided with a groove.
8. 7. The roll-up screen door according to claim 6, wherein an adjustment member is provided at each end of the side frames opposite the end connected to the connecting device.
9. 8. The roll-up screen door according to claim 7, wherein a stopper sheet is provided on at least one end surface of the screen.
10. The roll-up screen door according to claim 8, characterized in that each of these side frames is provided with a pulling wire, one end of which is connected to the adjustment member and the other end of which passes through the side frame, the movable frame, and then through the side frame and is fixedly connected to the winding mechanism.
11. 11. The roll screen door according to claim 10, wherein at least one weight member is provided within the movable frame.
12. 12. The roll screen door of claim 11, wherein the roll is provided with a motor that provides power to pull the screen.