ROLL-UP SCREEN AND SCREEN POSITIONING DEVICE THEREOF

Abstract

 A roll-up screen and screen positioning device thereof. The roll-up screen comprises: two side frames mutually spaced apart; a roller mechanism disposed between the two side frames; a mesh screen that can be wound in the roller mechanism and pulled out to expand therefrom; a handle disposed at one end of the mesh screen; and two positioning wires disposed on the two side frames and passing through the handle, each positioning wire being provided with a screen positioning device. By using the screen positioning device to adjust the tension of the two positioning wires, the present disclosure allows the handle to be positioned at any location between the two side frames, thereby positioning the mesh screen at any location therebetween.

Description

FIELD OF INVENTION

[0001] The present disclosure relates to a roll-up screen, and in particular, relates to a roll-up screen that can be positioned anywhere.

BACKGROUND OF INVENTION

[0002] Buildings are provided with a number of windows allowing outdoor sunlight and air to enter rooms from the windows. In order to prevent outdoor mosquitoes and flying dust from entering the rooms, many windows will add another screen to prevent mosquitoes and flying dust from entering the rooms. Therefore, the use of the screens has become one of the devices that must be set up at present. Most current screens are flat structures. When the flat screens are installed on the windows, the line of sight looking out of the window will be blocked. In order to improve the problem, many people have switched to roll-up screens instead of the flat screens. With a scrolling function of the roll-up screen, when you do not use the screen, the screen can be hidden on one side of the door and window, so as to improve the problem that the flat screen can easily obstruct the view of the beautiful view from the window.

[0003] Referring to FIGs. 1 and 2, a conventional roll-up screen 1 is disclosed, which mainly includes a roll-up unit 11, a mesh screen 12 and a handle 13. The roll-up unit 11 has at least one rotary shaft 14, and both ends of the mesh screen 12 are respectively fixed to the handle 13 and the rotary shaft 14. When the mesh screen 12 is to be folded, the rotary shaft 14 can be rotated, and the mesh screen 12 can be retracted on the rotary shaft 14, so that the mesh screen 12 no longer obstructs the view of the window. In addition, when the mesh screen 12 is to be unfolded, the handle 13 can be pulled away from the roll-up unit 11 to enable the mesh screen 12 to be unfolded, thereby achieving the desired benefit of preventing mosquitoes from entering the room.

[0004] However, the roll-up screen can be rolled up without blocking the window and preventing mosquitoes from entering the room. It is found that when the mesh screen 12 is unfolded, the handle 13 cannot be randomly positioned with the position where the mesh screen 12 is deployed, which is inconvenient to use. Therefore, after using the mesh screen 12 of the conventional roll-up screen, it is necessary to add a hook 15 on the window (as shown by the imaginary line in FIGs. 1 and 2). After the mesh screen 12 is unfolded, a buckle 16 on the handle 13 can be hooked on the hook 15 of the window, so that the mesh screen 12 is not retracted, and the hooks 15 and the buckle not only increases the cost but also has the trouble of installation and labor.

SUMMARY OF INVENTION

[0005] The present disclosure mainly solves the problem of the prior art, which is that a handle cannot be arbitrarily positioned according to the position where a mesh screen is unfolded, and the structure is also costly and time consuming to install.

[0006] An object of the present disclosure is to provide a roll-up screen, the roll-up screen includes two side frames disposed at an interval, a roller mechanism disposed between the side frames, a mesh screen configured to be wound in the roller mechanism and pulled out to expand therefrom, a handle disposed at one end of the mesh screen, and two positioning wires disposed on the side frames, wherein the two positioning wires pass through the handle, and both of the two positioning wires are provided with a screen positioning device, respectively. The tension of the two positioning wires is adjusted by the screen positioning device, so that the handle can be arbitrarily positioned between the two side frames, so that the mesh screen can be positioned anywhere.

[0007] The present disclosure has the beneficial effects that the present disclosure mainly solves the problem of the prior art, which is that a handle cannot be arbitrarily positioned according to the position where a mesh screen is unfolded, and the structure is also costly and time consuming to install.

DESCRIPTION OF DRAWINGS

[0008] 

FIG. 1 is a schematic view of a conventional roll-up screen.

FIG. 2 is another schematic view of a conventional roll-up screen.

FIG. 3 is a perspective view of the present disclosure.

FIG. 4 is a perspective view showing a configuration of positioning wires of the present disclosure.

FIG. 5 is a perspective view of a screen positioning device of the present disclosure.

FIG. 6 is an exploded perspective view of the screen positioning device of the present disclosure.

FIG. 7 is another exploded perspective view of the screen positioning device of the present disclosure.

FIG. 8 is a perspective view showing the state in which the screen positioning device of the present disclosure assembled in front of one side frame.

FIG. 9 is a perspective view of a screen positioning device according to another embodiment of the present disclosure.

FIG. 10 is an exploded perspective view of a screen positioning device according to another embodiment of the present disclosure.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0009] Referring to FIGs. 3 to 6, a roll-up screen according to an embodiment of the present disclosure includes a bottom frame 21, two side frames 22 disposed at an interval and on the bottom frame 21, a roller mechanism 23 disposed between the side frames 22, a mesh screen 24 configured to be wound in the roller mechanism 23 and pulled out to expand therefrom, a handle 25 disposed at one end of the mesh screen 24, two positioning wires 26, and two screen positioning devices 3. The roller mechanism 23 is provided with a rotary shaft 231 for outputting a winding force to the mesh screen 24 and configured to wind the mesh screen 24. When a user applies a force to the handle 25 that is greater than the winding force, the mesh screen 24 can be pulled out. One ends of the two positioning wires 26 are respectively fixed on the two side frames 22 and are passed around the handle 25 (shown in FIG. 4). The other ends of the two positioning wires 26 are respectively fixed on the two screen positioning devices 3 to adjust the tension of the two positioning wires 26. The handle 25 is supported by the tension of the two positioning wires 26, and can be arbitrarily positioned between the bottom frame 21 and the roller mechanism 23. The handle 25 further includes a first pull handle 251 and a second pull handle 252, and a fastener or a magnetic component (not shown) is disposed between the first pull handle 251 and the second pull handle 252. The first pull handle 251 and the second pull handle 252 can be combined by using one of technical means such as magnetic attraction or snapping. One end of the mesh screen 24 is fixed to the first pull handle 251, and the two positioning wires 26 pass through the second pull handle 252, so that the second pull handle 252 is arbitrarily positioned between the bottom frame 21 and the roller mechanism 23. The first pull handle 251 and the second pull handle 252 can be combined and separated into two different states. When the first pull handle 251 is coupled to the second pull handle 252, the mesh screen 24 can be unfolded. When the first pull handle 251 is separated from the second pull handle 252, the mesh screen 24 is retracted into the roller mechanism 23.

[0010] Referring to FIGs. 4 to 7, the two screen positioning devices 3 are respectively disposed on the two side frames 22 in the embodiment. The screen positioning device 3 includes a sliding block 31, a pull rod 32 disposed in the sliding block 31, an elastic component 33 disposed on the sliding block 31 and connected to one end of the pull rod 32, a connecting member 34 disposed at the other end of the pull rod 32 and having a receiving slot 341, and a fixing device 35 disposed on the sliding block 31. The receiving slot 341 of the connecting member 34 is inserted into the other end of the positioning wires 26. The sliding block 31 includes a receiving groove 311, a hole 312 connecting the receiving groove 311 and outside, and two resisting portions 313 respectively extending from the two sides of the sliding block 31. The pull rod 32 includes a shaft portion 321 located in the receiving groove 311 and passing through the hole 312, a mounting portion 322 extending from the shaft portion 321 toward the end of the hole 312 and passing through the hole 312, and an abutting portion 323 disposed at the other end of the shaft portion 321 and unable to pass through the hole 312. The shaft portion 321 can slide outward through the hole 312 until the abutting portion 323 is engaged with the side of the hole 312 to limit the shaft portion 321. A groove 324 is defined on each side of the mounting portion 322. In the embodiment, the elastic component 33 is a compression spring disposed in the receiving groove 311 of the sliding block 31. The elastic component 33 includes two end portions 331 spaced apart and a hollow portion 332 located between the two end portions 311 for the shaft portion 321 of the pull rod 32 to pass through. One end portion 331 of the elastic component 33 abuts the abutting portion 323 of the pull rod 32, and the other end portion 331 faces the hole 312 and can abut one side of the hole 312. The connecting member 34 is disposed on the mounting portion 322 of the pull rod 32. A protrusion 342 is disposed at a corresponding portion of the connecting member 34 and the groove 324 of the pull rod 32. By fitting the protrusion 342 into the groove 324, the connecting portion 34 can be quickly and easily combined with the mounting portion 322 of the pull rod 32.

[0011] Referring to FIGs. 5 to 7, the fixing device 35 includes a screw hole 351 formed in the sliding block 31, a nut 352 disposed at a bottom of the screw hole 351, and a screw element 353 disposed on the nut 352 and passing the screw hole. In the embodiment, the screw element 353 is a screw.

[0012] Referring to FIG. 8, the other ends of the two positioning wires 26 are firstly fixed in the receiving slot 341 of the connecting member 34 when assembled. Slide the sliding block 31 into the bottom of a guide rail 221 of the side frame 22, and slide the sliding block 31 to adjust the tension of the positioning wires 26. When the tension of the two positioning wires 26 is adjusted to be appropriate, the screw element 353 can be locked into the screw hole 351 and the nut 352 by using a tool (such as a Phillips screwdriver). The resisting portions 313 of the sliding block 31 are resisted by the guide rail 221 of the side frame 22, and the sliding block 31 is fixed on the side frame 22 to achieve the expected benefit of adjusting the tension of the positioning wire 26.

[0013] Referring to FIGs. 9 to 10, a screen positioning device 4 according to another embodiment is illustrated. The screen positioning device 4 is fixed on the side frame 22 by one of screwing, magnetic or adhesive, wherein the technical means are all conventional techniques, and will not be described again. The screen positioning device 4 includes a body 41 and a cover 42. The body 41 includes a concave hole 42, a wheel axle 43, and a wire slot (not shown), wherein the concave hole 42 communicates with the wire slot. The positioning wires 26 can enter the concave hole 42 by the wire slot. The wheel axle 43 is received in the concave hole 42. The wheel axle 43 is provided with at least one gear member 431 and a perforation 432, wherein the perforation 432 provides the positioning wires 26 that enter into the concave hole 42 and can be penetrated therein. The wheel axle 43 is provided with a driving groove 433 at least one end thereof. The cover 45 is coupled to the body 41. The cover 45 is provided with a through hole 451 at the driving groove 433 of the wheel axle 43 of the body 41. After the driving groove 433 protrudes from the through hole 451, the wheel shaft 43 can be rotated by a tool. In addition, a wall of the concave hole 42 extends a stop 422 to block between two teeth of the gear member 431 of the wheel axle 43. When the wheel axle 43 rotates, the positioning wires 26 can be wound around the wheel axle 43, thereby achieving the desired effect of regulating the tension of the positioning wires 26. After the screen positioning device 4 is rotationally adjusted, the handle 25 or the second handle 252 has an arbitrary positioning function.

[0014] While the disclosure has been described in connection with what are considered the exemplary embodiments, it is understood that this disclosure is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.

Claims

1. A roll-up screen, comprising:

two side frames disposed at an interval;

a roller mechanism disposed between the side frames;

a mesh screen configured to be wound in the roller mechanism and pulled out to expand therefrom;

a handle disposed at one end of the mesh screen; and

two positioning wires disposed on the side frames;

wherein the two positioning wires pass through the handle, and both of the two positioning wires are provided with a screen positioning device.

2. The roll-up screen according to claim 1, wherein the handle includes a first pull handle and a second pull handle, one end of the mesh screen is fixed to the first pull handle, and the two positioning wires pass through the second pull handle.

3. The roll-up screen according to claim 1, wherein the screen positioning device includes:

a sliding block including a receiving groove and a hole connecting the receiving groove and outside;

a pull rod disposed in the receiving groove of the sliding block and including one end facing the hole;

an elastic component disposed at the other end of the pull rod and located in the receiving groove; and

a fixing device disposed on the sliding block.

4. The roll-up screen according to claim 2, wherein the screen positioning device includes:

a sliding block including a receiving groove and a hole connecting the receiving groove and outside;

a pull rod disposed in the receiving groove of the sliding block and including one end facing the hole;

an elastic component disposed at the other end of the pull rod and located in the receiving groove; and

a fixing device disposed on the sliding block.

5. The roll-up screen according to claims 1 or 2, wherein the screen positioning device includes a body, the body is provided with a concave hole, a wheel axle, and a wire slot, and the wheel axle is received in the concave hole; the wheel axle is provided with a gear member and a perforation; a wall of the concave hole extends at least one stop between two teeth of the gear member of the wheel axle, and the wire slot connects to the concave hole.

6. The roll-up screen according to claim 5, wherein the screen positioning device further includes a cover, the cover is coupled to the body, and the cover is provided with a through hole at a position relative to the wheel axle of the body.

7. A screen positioning device of a roll-up screen, comprising:

a sliding block including a receiving groove and a hole connecting the receiving groove and outside;

a pull rod disposed in the receiving groove of the sliding block and including one end facing the hole;

an elastic component disposed at the other end of the pull rod and located in the receiving groove; and

a fixing device disposed on the sliding block.

8. The screen positioning device according to claims 3, 4, or 7, wherein the other end of the pull rod is provided with a coupling member.

9. The screen positioning device according to claims 3, 4, or 7, wherein the fixing device includes at least one screw hole formed in the sliding block, and at least one screw element disposed in the screw hole.

10. A screen positioning device of a roll-up screen, comprising:

a body;

wherein the body is provided with a concave hole, a wheel axle, and a wire slot, and the wheel axle is received in the concave hole; the wheel axle is provided with a gear member and a perforation; a wall of the concave hole extends at least one stop between two teeth of the gear member of the wheel axle, and the wire slot connects to the concave hole.

11. The screen positioning device according to claim 10, wherein the screen positioning device further includes a cover, the cover is coupled to the body, and the cover is provided with a through hole at a position relative to the wheel axle of the body.

Drawing