Screen device

Abstract

The screen device includes a cylinder, a movable frame, and two first frame members, the cylinder and the movable frame being disposed between the two first frame members, a scroll bar being provided in the cylinder, a screen being provided between the scroll bar and the movable frame, at least one rotating member being provided within the cylinder, at least one drawstring being threaded within the movable frame, and at least one end of the drawstring passing through the cylinder from the first frame member and then tied to the rotating member, which is provided on the side of the cylinder. Therefore, when it is necessary to adjust the tightness of the drawstring, it can be completed by simply adjusting the rotating member on the side of the cylinder using a tool, and there is no obstruction of any members in the process, making the adjustment convenient.

Description

[Technical Field]

[0001] The present invention relates to a screen device, and more particularly to a screen device that can be positioned anywhere. [Background technology]

[0002] In homes or offices, most buildings are equipped with screen devices at their openings to achieve purposes such as sun protection, shielding, or preventing mosquitoes and dust from entering indoors. Current screen devices are roughly divided into two types: flat screens and concealed screens. However, current concealed screens have multiple functions such as shielding and storage at the same time, and are therefore gradually replacing flat screen devices. Currently, the most common concealed screens mainly use a scroll bar to roll up the screen and pull out the screen by pulling the movable rod in the screen structure to achieve sun protection and shading effects. Furthermore, all conventional concealed screens are equipped with a number of drawstrings and drawstring adjustment devices in their structure, where the drawstrings pass through the movable rods and the drawstring adjustment devices adjust the tightness of the drawstrings, allowing the movable rods and screens in the concealed screen to be positioned anywhere. Although conventional concealed screens can achieve the desired functions, they still have the following problems in use:

[0003] First, as in China Taiwan Invention Patent No. I684422, the drawstring adjustment devices in conventional hidden screens are all attached to the inside of the frame, which is always the path through which the screen and movable frame are deployed and retracted. Therefore, with conventional hidden screens, when using a tool to enter the drawstring adjustment device to adjust the drawstring, it is always obstructed by the screen or movable frame, making adjustment inconvenient; and the wider the screen, the more pronounced this problem is. Second, when assembling the frame materials of conventional concealed screens, additional pneumatic or power tools are often required to complete the assembly of the conventional concealed screens. However, when operating in an environment without power or air filling facilities, the tools often run out of power or run out of air pressure, which often hinders the progress of the construction work. Third, the scroll bar cylinder in a conventional concealed screen is often assembled to the outer frame using a screw fastening method. Therefore, when the scroll bar cylinder needs to be removed for maintenance or cleaning of a conventional concealed screen, the screw fastening assembly must be loosened with a tool to remove the scroll bar cylinder, which not only wastes labor costs but also makes removal difficult. Fourth, when conventional concealed screens are used for wide building openings, they often use a scroll bar with a large winding force to wind up the large-area screen and movable frame. This structural arrangement causes the unfolded screen to be displaced by the large winding force of the scroll bar, which can easily cause problems such as light leakage, reduced shielding, and inability to prevent mosquitoes or dust from entering the room. Summary of the Invention [Problem to be solved by the invention]

[0004] The main purpose of the present invention is to provide a mechanism for adjusting the drawstring on the outside of the scroll bar cylinder, so that when the tightness of the drawstring needs to be adjusted, all that is required is to operate a tool on the outside of the scroll bar cylinder, and no parts are obstructed during the process, thereby avoiding the problem of difficulty in adjustment in the prior art and making the adjustment process not limited by the size of the screen width. Another main object of the present invention is to provide a frame assembly structure with a convex rib and its corresponding fitting groove, and by assembling the convex rib and the fitting groove together, it is possible to achieve the effect of quickly and conveniently assembling the frame, and it can be quickly fastened and completed without the use of tools. Furthermore, it fundamentally prevents the delay or obstruction of construction progress that occurs in the prior art when working in an environment without power or air filling facilities. Yet another main object of the present invention is to add an attachment member between the cylindrical body and the outer frame, and combine the engagement portion of the attachment member with the engagement portion of the cylindrical body, thereby enabling the cylindrical body to be attached and detached without the use of any tools, thereby further improving the convenience of attachment and detachment. Another main object of the present invention is to provide a positioning rod on the movable frame, the end of which abuts against the adjacent frame material, so that the unfolded screen and movable frame will not be pulled back even when subjected to a large winding force from the scroll bar, thereby improving the problems of conventional hidden screens, such as light leakage, reduced shielding, or the inability to prevent mosquitoes or dust from entering the room. [Means for solving the problem]

[0005] The technical means used in the present invention are as follows: the screen device includes a cylinder, a movable frame, and two first frame members, the cylinder and the movable frame are disposed between the two first frame members, a scroll bar is disposed within the cylinder, a screen is disposed between the scroll bar and the movable frame, at least one rotating member is disposed within the cylinder, at least one drawstring is threaded through the movable frame, and at least one end of the drawstring is threaded from the first frame member through the cylinder and then tied to the rotating member. The screen device includes a cylindrical body, a movable frame, and two first frame members, the cylindrical body and the movable frame being arranged between these first frame members, a scroll bar being arranged inside the cylindrical body, a screen being arranged between the scroll bar and the movable frame, and a mounting seat being arranged inside the movable frame, which accommodates a swinging member and at least one slider, the slider being provided with a push rod pointing in the direction of the swinging member, and one end of the push rod being able to abut against the swinging member. The screen device includes a cylindrical body, a movable frame, and two first frame members, the cylindrical body and the movable frame being arranged between these first frame members, a scroll bar being arranged inside the cylindrical body, and a screen being arranged between the scroll bar and the movable frame, and the cylindrical body being assembled to either an outer frame or an adjacent wall by a plurality of mounting members. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is an exploded view of a first preferred embodiment of the present invention. [Figure 2] FIG. 2 is an exploded view of a cylindrical portion in the first preferred embodiment of the present invention. [Figure 3] FIG. 2 is a cross-sectional view of a cylindrical portion in the first preferred embodiment of the present invention. [Figure 4] FIG. 1 is a perspective view of a first preferred embodiment of the present invention after assembly. [Figure 5] FIG. 10 is an exploded view of a second preferred embodiment of the present invention. [Figure 6] FIG. 1 is a schematic diagram of a second preferred embodiment of the present invention in a normal state; [Figure 7] FIG. 1 is a first schematic diagram of the operation of the second preferred embodiment of the present invention. [Figure 8] FIG. 2 is a second schematic diagram of the operation of the second preferred embodiment of the present invention. [Figure 9] FIG. 10 is a schematic view showing the positioning rod abutting against the positioning recess in the second preferred embodiment of the present invention. [Figure 10] FIG. 1 is a schematic diagram of a third preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0007] As shown in Figure 1, the first preferred embodiment of the screen device of the present invention includes two first frame members 11, a cylindrical body 12 provided at one end of these first frame members 11, a second frame member 13 provided on the side of these first frame members 11 opposite the cylindrical body 12, a movable frame 14 provided between these first frame members 11, and a screen 15 connected between the movable frame 14 and the cylindrical body 12. The second frame members 13 are each provided with a plurality of convex ribs 131 at positions adjacent to the first frame members 11, and the first frame members 11 are each provided with a plurality of corresponding fitting grooves 111 at positions opposite the convex ribs 131 of the second frame members 13. By utilizing the method of assembling these convex ribs 131 and these fitting grooves 111 together, not only can the first frame members 11 and the second frame members 13 be quickly combined, but even when assembly work is performed in an environment without the provision of electricity or air filling facilities, this embodiment can be quickly fastened and completed without the use of tools, without delaying the progress of construction. Furthermore, in this embodiment, the two first frame members 11 can be set at different heights, and one of the frame members 11 can be placed on the ground in the form of a low rail.

[0008] As shown in FIGS. 1 to 3, the cylindrical body 12 contains a scroll bar 21 that winds up the screen 15, two rotating members 22 provided at each of the opposing ends of the cylindrical body 12, two lid bodies 23 adjacent to the first frame members 11, and two cover plates 24 covering the lid bodies 23. Since the same mechanism is provided at both opposing ends of the cylindrical body 12, for ease of explanation, only the mechanism configuration at one end will be described in FIGS. 2 and 3. The lid body 23 is provided with a pivot groove 231, a hollow portion 232 spaced from the pivot groove 231, a through hole 233 facing the pivot groove 231, and an aperture 234. The rotating member 22 is pivoted within the pivot groove 231, and two teeth 221 spaced from each other along the axial direction are provided around the rotating member 22. The position of the hollow portion 232 corresponds to these tooth portions 221 of the rotating member 22, and two elastic stoppers 241 are provided at positions opposite these tooth portions 221 of the cover plate 24 so as to generate a stop effect that gradually limits the position of these tooth portions 221 as they rotate.

[0009] 3 and 4, two pull cords 3 pass through the movable frame 14 and are provided with a handle 141 for grasping and pulling. One end of each pull cord 3 is fixed to a position adjacent to the second frame member 13 of the first frame member 11, and the other end of each pull cord 3 passes through the movable frame 14, crosses inside the movable frame 14, runs from the end of the movable frame 14 to the first frame member 11, passes through the cylindrical body 12, and passes through the corresponding cover 23 via the hole 234 of the cylindrical body 12 on the same side as the first frame member 11, and is further tied to the rotating member 22 provided in the pivot groove 231 of the cover 23. One end of the scroll bar 21 is inserted into the cylindrical body 12, and a gear 211 is fitted on the scroll bar 21 inserted into the cover 12, and a worm 212 is meshed with the gear 211. If the pull string 3 is too loose or too tight, a tool can be used to reach the rotating member 22 through the through-hole 233. Elastic stoppers 241 are provided on the cover plate 24 at positions facing the teeth 221 of the rotating member 22, respectively, to create a stopping effect that gradually limits the position of the teeth 221 as the rotating member 22 rotates. This allows the rotating member 22 to adjust the tightness of the pull string 3, preventing the movable frame 14 from being distorted due to the tension of the pull string 3 being too loose or too tight, and ensuring the function of the movable frame 14 to be positioned anywhere. Furthermore, if the screen 15 is too loose or too tight, the worm 212 rotates, driving the gear 211 to rotate the scroll bar 21, thereby adjusting the tension of the screen 15 to the appropriate level, ensuring the flatness of the screen 15 and allowing it to be wound onto the scroll bar 21.

[0010] As shown in Figures 2 to 4, the mechanisms for adjusting these drawstrings 3 are all provided on the cover 23, and the cover 23 is provided on the outside of the cylindrical body 12. Therefore, when it is necessary to adjust the drawstrings 3, the rotating member 22 can be adjusted simply by inserting a tool into the through-hole 233 of the cover 23. There is no obstruction of any other components during the adjustment process, so there is no problem of the adjustment being unsmooth, and it is not difficult to adjust even for a wide range of screen devices.

[0011] 4 and 5, Fig. 5 shows a second preferred embodiment of the screen device of the present invention, and the differences between this second preferred embodiment and the first preferred embodiment are as follows: A mounting seat 4 is provided within the movable frame 14, and the mounting seat 4 accommodates a swinging member 41, a knob 42 provided on the swinging member 41, two sliders 43 provided on each of the opposing sides of the swinging member 41, two baffles 44 provided between the swinging member 41 and the slider 43, and two elastic members 45 provided between the baffles 44 and the sliders 43. The knob 42 is provided on the handle 141 of the movable frame 14.

[0012] The slider 43 is provided with a push rod 431 facing the oscillating member 41, at least one slide rail 432 provided on the side, a positioning rod 433 extending toward the opening at one end of the movable frame 14, an insertion groove 434 facing the positioning rod 433, and two snap fits 436 provided on each of the opposing sides. A through hole 440 is provided in the baffle 44, so that one end of the push rod 431 can abut against the oscillating member 41 via the through hole 440. A slide groove 40 is provided in the mounting seat 4 at a position facing the at least one slide rail 432, and a stopper 401 is provided at one end of the slide groove 40 for attaching the at least one slide rail 432 so that the slider 43 can slide back and forth within a certain range along the direction of the slide groove 40.

[0013] In addition, the positioning rod 433 located in the insertion groove 434 is provided with two hook grooves 439 located on opposite sides, and two notches 438 are provided on the slider 43 at positions opposite these hook grooves 439, and snap fits 436 are provided on the slider 43 at positions facing these notches 438, so that the positioning rods 433 are connected to the sliders 43 by engaging with the notches 438 through the snap fits 436, and can move correspondingly as the sliders 43 slide back and forth.

[0014] As shown in Figures 6 to 9, the swinging member 41 has cam structures on both sides corresponding to the push rods 431, and positioning recesses 112 (shown in Figure 9) are provided at positions facing the positioning rods 433 of each of the first frame members 11 so that the positioning rods 433 abut against them to restrict their positions. As shown in Figure 6, in the normal state, the positioning rods 433 connected to the sliders 43 do not abut against the positioning recesses 112, so that the movable frame 14 can be freely pulled between the first frame members 11. Furthermore, as shown in Figure 7, when the movable frame 14 is pulled again and the positioning rods 433 abut against the protruding edges of the positioning recesses 112, the positioning rods 433 are pushed up by the protruding edges and slide the sliders 43 toward the swinging member 41, and the push rods 431 also extend into the swinging member 41, compressing the elastic members 45 and accumulating elastic restoring force. 8, when the positioning rods 433 pass over the protruding edges and enter the positioning recesses 112, the elastic restoring force of the elastic members 45 pushes the sliders 43 in the opposite direction, driving the positioning rods 433 so that they are fully abutted and pressed into the positioning recesses 112. When the knob 42 is then rotated to synchronously rotate the swing member 41, the cam structure of the swing member 41 abuts against one end of the push rod 431, thereby restricting the slider 43, the push rod 431, and the positioning rod 433 between the positioning recesses 112 and the swing member 41, further restricting the movement of the movable frame 14. Therefore, when applied to a wide range of screen devices, the abutment of the positioning rod 433 against the positioning recess 112 can prevent the movable frame 14 from being pulled back by the rewinding force of the scroll bar 21.

[0015] 10 shows a third preferred embodiment of the screen device of the present invention, and the difference between the third preferred embodiment and the first and second preferred embodiments is that the cylindrical body 12 is assembled to either the outer frame 6 or an adjacent wall by a plurality of mounting members 5 (only one of which is shown in FIG. 10). In this third preferred embodiment, a situation will be described in which the cylindrical body 12 is detachably mounted to the outer frame 6. Each mounting member 5 has two connecting portions 51 and two engaging portions 52 extending outward from the connecting portions 51, respectively. These connecting portions 51 are fixedly attached to the inner edge surface of the outer frame 6 by a plurality of screws 91, and each engaging portion 52 is specifically an engaging groove. Two engaging portions 121 are provided at positions opposite these engaging portions 52 on the cylindrical body 12, and each engaging portion 121 is specifically a hook, so that it can engage with the engaging grooves. This not only allows the work process of attaching the cylindrical body 12 to the outer frame 6 to be completed quickly, thereby saving labor costs and assembly time, but also allows the cylindrical body 12 to be removed without the use of any tools during maintenance or cleaning, thereby improving the convenience of attachment and detachment.

[0016] As described above, the cylindrical body 12 of the present invention is removably attached to the outer frame 6, the scroll bar 21 is disposed within the cylindrical body 12, and the rotating member 22 is properly integrated within the cylindrical body 12 compared to the prior art. This not only allows the scroll bar 21 to be properly accommodated, but also simplifies and integrates the necessary mechanisms for the drawstring adjustment and switch functions. While the basic functions of pulling, positioning, and locking can be achieved, additional functions can be easily designed, effectively increasing the potential value of the research and development product. Therefore, the objectives of the present invention can be reliably achieved. 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 screen device comprising a cylindrical body (12), a movable frame (14), and two first frame members (11), the cylindrical body (12) and the movable frame (14) being provided between the two first frame members (11), a scroll bar (21) being provided within the cylindrical body (12), a screen (15) being provided between the scroll bar and the movable frame (14), at least one rotating member (22) being provided within the cylindrical body (12), at least one pull string (3) being passed through the movable frame (14), and at least one end of the pull string (3) being passed through the first frame member (11) and into the cylindrical body (12) and then tied to the rotating member (22).

2. The screen device according to claim 1, characterized in that a cover body is provided at a position adjacent to these first frame members of the cylinder, a pivot groove is provided in the cover body, and the rotating member is pivoted in the pivot groove.

3. 3. The screen device according to claim 2, wherein the rotating member has a plurality of teeth formed around its periphery, and the cover has a hollow portion formed at a position opposite the teeth.

4. 4. The screen device according to claim 3, wherein the cover body is further provided with a cover plate, and at least one elastic stopper is provided on the cover plate at a position facing the tooth portion.

5. 3. The screen device according to claim 2, wherein the cover has a through hole at a position facing the pivot groove.

6. 3. The screen device according to claim 2, wherein one end of the scroll bar is inserted into the cylindrical body, a gear is fitted to the scroll bar inserted into the lid body, and a worm is engaged with the gear.

7. 3. The screen device according to claim 2, wherein the cover has an opening at a position where the pull string enters and exits.

8. The screen device according to claim 1, further comprising a second frame member between the first frame members, the second frame member being located on the opposite side of the cylinder, the second frame member having at least one convex rib at a position adjacent to the first frame members, and the first frame members having a fitting groove at a position opposite the convex rib of the second frame member.

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