Door and window, and screen mesh Anti-lifting device therefor

Abstract

A door and window, and a screen mesh anti-lifting device therefor. The screen mesh anti-lifting device is in the shape of a sheet and is arranged on one side edge of a screen mesh. The screen mesh anti-lifting device comprises a fixing portion, and a fitting portion for fitting into the screen mesh, wherein the fixing portion and the fitting portion are arranged in the same direction as the side edge of the screen mesh, the thickness of the fixing portion being greater than the thickness of the fitting portion, and the length of the fixing portion being less than the length of the fitting portion. By means of the fixing portion and the fitting portion, the screen mesh can be kept flat when being pulled, thereby avoiding the screen mesh being lifted and folded. In addition, the present invention further provides a door and window fitted with the screen mesh anti-lifting device. The door and window is provided with the screen mesh anti-lifting device; thus, by means of the screen mesh anti-lifting device, it can be ensured that the operation of pulling the screen mesh for opening and closing on the door and window is more stable.

Description

Door and window and their screen anti-lifting device Technical Field

[0001] The present invention relates to a door and window and components thereof, in particular to a door and window and a screen anti-lifting device thereof. Background Art

[0002] The screen mesh of the screen device often bends or folds during the retracting and pulling-out operations and cannot be kept flat. In particular, after the screen mesh is pulled out, if it encounters external impact or strong wind, the screen mesh often lifts off the screen frame of the screen device, affecting the normal use of the screen mesh.

[0003] 1 and 2 , a conventional screen device 1 is shown that can solve the problem of screen mesh bending, folding, or lifting off the screen window frame. The screen device 1 includes two parallel side frames 11 spaced apart from each other and each defining a side chamber 110, a rolling mechanism 12 disposed at one end of the side frames 11, a screen mesh 13 connected to the rolling mechanism 12 and extending from opposite sides of the side chambers 110, an operating handle 14 connected to one end of the screen mesh 13 away from the rolling mechanism 12, and two anti-lifting films 15 attached to opposite sides of the screen mesh 13 extending from the side chambers 110. A user can grasp the operating handle 14 to pull the screen mesh 13 partially retracted in the rolling mechanism 12, thereby achieving the operation of pulling out and retracting the screen mesh 13.

[0004] However, even though the anti-lifting films 15 are provided at the position where the operating handle 14 is connected to the gauze 13, stress concentration is still easily generated when the operating handle 14 is operated. In particular, when the operating handle 14 pushes the gauze 13 in the direction of the rolling mechanism 12, the gauze 13 and the adjacent positions of the operating handle 14 are prone to instantaneous pushing force. Therefore, under frequent operations, the gauze 13 and even the anti-lifting films 15 may form wrinkles. In more serious cases, the gauze 13 and the anti-lifting films 15 may even be damaged. Not only can the effect of effectively preventing the gauze 13 from being lifted and folded be failed, but the normal opening and closing functions of the gauze 13 may even be affected.

[0005] Summary of the Invention

[0006] The technical solution adopted by the present invention is: a gauze anti-lifting device, which is in the shape of a sheet and is arranged on one side edge of a gauze, the gauze anti-lifting device includes a fixed part and a fitting part that is fitted with the gauze, wherein the fixed part and the fitting part are arranged in the same direction as the side edge of the gauze, and the thickness of the fixed part is greater than that of the fitting part.

[0007] A gauze anti-lifting device is sheet-shaped and arranged on one side edge of a gauze. The gauze anti-lifting device includes a fixing portion and a fitting portion that fits the gauze. The fixing portion and the fitting portion are arranged in the same direction as the side edge of the gauze, and the length of the fixing portion is smaller than that of the fitting portion.

[0008] The beneficial effects of the present invention are as follows: The purpose of the present invention is to provide a device that can prevent the screen and the screen anti-lifting device from being bent, wrinkled or even broken, thereby affecting the normal function of doors and windows.

[0009] The present invention's effectiveness lies in: the screen anti-lifting device strengthens the structural strength of the screen, the fixing portion, and the handle at their interface by making the fixing portion thicker than the fitting portion and shorter than the fitting portion. This prevents the screen and fixing portion from bending, wrinkling, or even breaking during operation, while also ensuring that the screen's capacity is not compromised by the enhanced structural strength. Therefore, the present invention ensures smoother and more stable opening and closing of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG1 is a front view illustrating a conventional window screen device.

[0011] FIG. 2 is a schematic diagram illustrating a situation in which one screen of the screen window device is easily folded during normal rolling use.

[0012] FIG3 is an exploded perspective view illustrating an embodiment of the door and window of the present invention.

[0013] FIG. 4 is a perspective exploded view from a different perspective from FIG. 3 , illustrating one screen window frame of the embodiment.

[0014] FIG5 is a partially enlarged three-dimensional exploded view illustrating an embodiment of the screen anti-lifting device of the present invention.

[0015] FIG. 6 is a fragmentary perspective view illustrating a fixing portion and a fitting portion of the embodiment of the device.

[0016] FIG7 is a schematic diagram illustrating the function of the embodiment of the device. DETAILED DESCRIPTION

[0017] Before the present invention is described in detail, it should be noted that similar components are denoted by the same reference numerals in the following description.

[0018] Referring to Figures 3 and 4 , an embodiment of a door and window according to the present invention is shown. This embodiment comprises a plurality of screen anti-lifting devices 2 according to the present invention, and a screen frame 5 for mounting the screen anti-lifting devices 2. The screen frame 5 includes a rolling mechanism 51 at one end, two parallel side frames 52 extending away from the rolling mechanism 51, a movable frame 59 slidably disposed between the side frames 52, and a screen 9 wound around the rolling mechanism 51. Two opposing side edges 91a of the screen 9 are respectively connected to the rolling mechanism 51 and the movable frame 59, while the other two opposing side edges 91b of the screen 9 extend into the side frames 52.

[0019] Referring to Figures 5 and 6, the screen anti-lifting device 2 is in the form of a sheet and is arranged on one of the side edges 91b of the screen 9, and includes a fixed portion 21 and a fitting portion 22 fitted with the screen 9. The fitting method of the fitting portion 22 and the screen 9 can be one of the methods of sewing, gluing or bonding. Among them, the fixed portion 21 is connected to one end of the movable frame 59, and the fixed portion 21 and the fitting portion 22 are arranged in the same direction as the side edge 91b of the screen 9, and the fixed portion 21 is provided with a reinforcing member 23. The length of the reinforcing member 23 is equal to that of the fixed portion 21 and fits with the fixed portion 21. Therefore, the thickness of the fixed portion 21 can be greater than the fitting portion 22, and the length of the fixed portion 21 is less than the fitting portion 22, so that the thickness of the fixed portion 21 can be greater than that of the fitting portion 22, and the length of the fixed portion 21 is less than that of the fitting portion 22, so that the thickness of the fixed portion 21 can be increased. The strength of the adjacent position of the fixed portion 21 and one end of the movable frame 59 is strengthened, and at the same time, the capacity of the rolling mechanism 51 to retract the gauze 9 is not affected. In this embodiment, the reinforcing piece 23 is attached between the fixed portion 21 and the gauze 9. Of course, the reinforcing piece 23 can also be attached to the other side of the fixed portion 21 relative to the gauze 9. The attachment method of the reinforcing piece 23 and the fixed portion 21 can also be one of the methods such as sewing, gluing or bonding. In addition, specifically, the fixed portion 21 and the attachment portion 22 are generally integrally formed and extend along the side edge 91b of the gauze 9. A hard or soft material, such as a film or a metal sheet. In addition, the reinforcing piece 23 attached to the fixed portion 21 can also be a hard or soft material, such as a film or a metal sheet, or a material of the same material as the fixed portion 21.

[0020] Referring again to FIG. 3 , it should be noted that the gauze mesh 9 is further provided with a first connecting member 31 on the side edge 91a near the fixed portion 21 for connecting to the movable frame 59, and a second connecting member 32 is provided on the side edge 91a near the bonding portion 22 for connecting to the rolling mechanism 51. Specifically, the first connecting member 31 and the second connecting member 32 are also hard or soft sheets of material, such as film or metal foil, that are bonded and extended along the side edge 91a of the gauze mesh 9. The first connecting member 31 and the second connecting member 32 can also be bonded by sewing, gluing, or adhesive bonding. The four side edges 91a, 91b of the rectangular gauze 9 are respectively completely fitted by the first connecting member 31, the second connecting member 32, and the two gauze anti-lifting devices 2. Therefore, the overall tension of the gauze 9 can be effectively maintained through a material sheet that is harder than the material of the gauze 9, thereby reducing the possibility of the gauze 9 being bent or wrinkled.

[0021] Referring to FIG. 7 in conjunction with FIG. 4 , considering that the embodiment of the door and window of the present invention is operated by pulling the movable frame 59 to move the screen 9 between the side frames 52 , the opening and closing of the embodiment can be achieved by coordinating the operation of the rolling mechanism 51 to retract and pull the movable frame 59 to release the screen 9 . Among them, since the mesh anti-lifting devices 2 are respectively extended into the side frames 52, the fixed portion 21 of the mesh anti-lifting devices 2 is connected to one end of the movable frame 59 and the fitting portion 22 is fitted to the side edges 91b of the mesh 9, the reinforcing member 23 is fitted to the fixed portion 21 and arranged between the mesh 9 and the fixed portion 21, so that the thickness of the fixed portion 21 is greater than the design of the fitting portion 22. Therefore, even if the movable frame 59 is frequently operated to cause the side edges 91b of the mesh 9 to be rolled up and pulled out in the side frames 52, the pushing force generated by the adjacent positions of the movable frame 59 and the fixed portion 21 will not cause stress concentration, causing the mesh 9 and the fixed portion 21 to bend or wrinkled, or even cracked and damaged, thereby affecting the normal operation of this embodiment of the door and window of the present invention.

[0022] In summary, the door and window of the present invention and its screen anti-lifting device 2 can maintain the screen 9 in a well-tensioned state by cooperating with the first connecting member 31 and the second connecting member 32. The screen anti-lifting device 2 is arranged in the movement path of the screen 9 on the side frames 52 and extends completely to the side edges 91b of the screen 9. In particular, the thickness of the fixed portion 21 adjacent to the movable frame 59 is greater than the contact portion 22. Therefore, due to the enhanced structural strength of this portion, the screen 9 and the fixed portion 21 will not bend under frequent operation of the movable frame 59, effectively preventing wrinkles or breaks in the screen 9 and the fixed portion 21. Moreover, the length of the fixed portion 21 is shorter than the contact portion 22, so the increased strength of the fixed portion 21 does not affect the capacity of the rolling mechanism 51 to accommodate the screen 9. Therefore, the normal operation of this embodiment of the door and window of the present invention is effectively maintained, and the purpose of the present invention is truly achieved.

[0023] The above description is merely an embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application and the content of the patent specification of the present invention are still within the scope of the patent of the present invention.

Claims

1. A screen anti-lifting device, characterized by: It is sheet-shaped and arranged on one side edge of a gauze net. The gauze net anti-lifting device includes a fixed part and a fitting part that fits with the gauze net, wherein the fixed part and the fitting part are arranged in the same direction as the side edge of the gauze net, and the thickness of the fixed part is greater than that of the fitting part.

2. A screen anti-lifting device, characterized by: It is sheet-shaped and arranged on one side edge of a gauze net. The gauze net anti-lifting device includes a fixed part and a fitting part that fits with the gauze net, wherein the fixed part and the fitting part are arranged in the same direction as the side edge of the gauze net, and the length of the fixed part is smaller than that of the fitting part.

3. The screen anti-lifting device according to claim 1 or 2, characterized in that: in, The fixing portion is provided with a reinforcing piece, the length of the reinforcing piece is equal to that of the fixing portion and is fitted with the fixing portion.

4. The screen anti-lifting device according to claim 3, characterized in that: in, The reinforcing piece is arranged between the gauze and the fixing portion.

5. The screen anti-lifting device according to claim 1 or 2, characterized in that: in, At least one gauze anti-lifting device is also provided on the side edge opposite to the gauze anti-lifting device.

6. The screen anti-lifting device according to claim 1 or 2, characterized in that: in, A first connecting piece is further provided on the side edge of the gauze near the fixing portion.

7. The screen anti-lifting device according to claim 1 or 2, characterized in that: in, A second connecting piece is further provided on the side edge of the gauze near the fitting portion.

8. A door or window comprising the screen anti-lifting device as described in any one of claims 1 to 7, and a screen window frame on which the screen anti-lifting device is installed.

9. The door and window according to claim 8, wherein: in, The screen window frame includes a rolling mechanism, a movable frame and the screen net, and the rolling mechanism is arranged at one end of the screen window frame, and the movable frame slides in the screen window frame. Two opposite side edges of the screen net are respectively connected to the rolling mechanism and the movable frame, and the other two opposite side edges of the screen net extend into the screen window frame, and at least one side edge of the screen net extending into the screen window frame is provided with the screen net anti-lifting device.

10. The door and window according to claim 9, wherein: in, The screen window frame further comprises two side frames, the rolling mechanism is arranged at one end of the two side frames, and the movable frame slides between the two side frames.

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