JP2002004753A - Screen opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen opening/closing device which can automatically stop a screen housing cylinder at an arbitrary location by performing windup operation of a screen at an arbitrary speed. SOLUTION: The screen opening/closing device is constructed by arranging the screen housing cylinder 3 in parallel with a jamb 1 of a square frame in a manner being movable along a head and a sill 2 of the square frame, arranging a windup shaft in the screen housing cylinder 3, attaching one end of the screen 5, such as a net or a roll blind, to the windup shaft such that the screen 5 can be wound up to be housed in the screen housing cylinder 3 or wound back to be drawn out of the same, and attaching the other end 6 of the screen 5 to the jamb 1 of the square frame. According to the screen opening/closing device, automatic brake devices 11 and 12 for automatically braking the screen housing cylinder 3 are arranged at both ends of the screen housing cylinder 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen storage tube provided in parallel with a vertical frame member of a rectangular frame, and moving the screen storage tube along a horizontal frame member of the rectangular frame to form a screen or roll blind. The present invention relates to a screen opening / closing device that winds or draws out a screen and opens and closes the screen.

[0002]

2. Description of the Related Art In a conventional screen opening / closing device, a screen storage cylinder is movable along a horizontal frame member of a rectangular frame, and a winding shaft is provided on the screen storage cylinder. One edge is attached, the screen is housed in a screen storage tube so as to be able to be taken in and out, and the other edge of the screen is attached to the vertical frame member. A spring shaft is inserted into the winding shaft. The spring shaft has a mandrel wound around a mandrel, one end of the mandrel is fixed to the winding shaft, and the other end of the mandrel is connected to the end of the screen storage tube. It is configured to be fixed to the part. Further, fixing members are provided at both ends of the screen storage cylinder for forcibly fixing the screen storage cylinder at an arbitrary position.

[0003]

In the screen opening / closing device, a spring shaft is inserted into a winding shaft. The spring shaft has a mandrel wound around a mandrel, and one end of the mandrel is attached to the winding shaft. Since it is fixed and the other end of the mandrel is fixed to the end of the screen storage tube, the screen can be easily wound up. However, the screen is rewound into the screen storage cylinder at the moment when the hand is released from the screen storage cylinder due to the elastic force of the winding spring in the screen drawing operation. In order to solve such a problem, the screen storage cylinder was forcibly fixed at an arbitrary position by using fixing members at both ends of the screen storage cylinder, but since the screen storage cylinder was manually fixed, It took time to draw out the screen. In addition, since the screen storage cylinder is forcibly fixed, the screen spring may be rewound vigorously due to the elastic force of the winding spring when releasing the screen storage cylinder from being fixed. Had the property.

[0004]

In order to solve the above-mentioned problems, a screen opening / closing device according to the present invention is provided with a screen storage cylinder in parallel with a vertical frame member of a rectangular frame, and the screen storage cylinder is provided with the screen storage cylinder. It is movable along the horizontal frame member, a winding shaft is provided in the screen storage cylinder, one edge of a screen such as a net or a roll blind is attached to the winding shaft, and the screen is placed in the screen storage cylinder. A screen opening / closing device that is wound so as to be able to be taken in and out, and the other edge of the screen is attached to a vertical frame member of the rectangular frame, wherein the screen storage tube is automatically attached to both ends of the screen storage tube. An automatic braking device for braking is provided. Also, a spring shaft is inserted into the winding shaft, and the winding shaft is wound around a mandrel, one end of the mandrel is fixed to the winding shaft, and the other end of the mandrel is connected to the screen storage tube. It is configured to be fixed to the end.

The automatic braking device has a holder, and the holder is mounted on each of both ends of the screen accommodating cylinder. A compression spring is brought into contact with the holder, and the braking device body is brought into contact with the compression spring. It is configured to touch. Further, a screw hole is formed in a top portion of a holder attached to one end of the screen storage tube, a position adjusting screw is screwed into the screw hole, and a washer is interposed between the holder and the compression spring, The washer is fixed to the position adjusting screw.

[0006] The braking device main body is provided with a wheel member that can run on a rail provided along the horizontal frame member and a braking member that brakes the screen storage cylinder. The member is a wheel that runs on a rail,
A central rotating portion positioned inside the wheel portion; and the braking member includes a central rotating portion having substantially the same diameter as the central rotating portion of the wheel member; An outer cylindrical portion positioned outside is integrally formed, and a braking member and a wheel member are continuously provided by abutting a center rotating portion of the wheel member and a center rotating portion of the braking member, An inner wrapping spring is wound around the center turning portion of the wheel member and the center turning portion of the braking member, and an outer wrapping spring is wound around the outer cylindrical portion of the braking member, and the winding direction of the inner wrapping spring is reversed. It is wound in the direction. Further, an inner winding portion is provided on the inner compression spring, and this unwinding portion faces the abutting portion between the center turning portion of the wheel member and the center turning portion of the braking member.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. The screen according to the present invention is a screen-like screen such as a screen net, a roll blind, a projection screen, or the like. In this embodiment, a screen opening / closing device for a screen door provided on a window frame will be described. FIG. 1 is a front view showing a state in which a screen door opening / closing device is mounted on a window frame, and FIG. 2 is an exploded front view of a main part of the screen door opening / closing device. The window frame equipped with the screen door opening / closing device is a rectangular frame. A vertical frame member 1 is provided in a vertical direction, a horizontal frame member 2 is provided in a horizontal direction, and a rail 10 is laid along the horizontal frame member 2. It is. The screen opening and closing device of the screen door is provided with a screen storage tube 3 parallel to the vertical frame member 1, and running wheels 9 are provided at the lower end 8 of the screen storage tube 3 so as to be able to run along the horizontal frame member 2. is there. The screen storage tube 3 is provided with a slit in the vertical direction so that the net 5 wound into the screen storage tube 3 can be put in and out of the slit. A cylindrical winding shaft 19 is provided in the screen storage tube 3, and the upper end of the winding shaft 19 is rotatably supported by the upper end portion 7 of the screen storage tube 3. One vertical edge of the net 5 is fixed to the winding shaft 19, the net 5 is wound around the winding shaft 19, and the other vertical edge 6 of the net 5 is drawn out through the slit to the other end, and Is fixed to the left vertical frame member 1.

A spring shaft 25 is inserted into the winding shaft 19. The spring shaft 25 has a mandrel 26 wound around a mandrel 26, and a lock 28 is provided at the lower end of the spring shaft 25. When the spring shaft 25 is inserted into the winding shaft 19, the lower end of the spring shaft 25 is It is designed to engage with the winding shaft 19.
Then, a fixing tool 29 is provided at the upper end of the spring shaft 25, and the fixing tool 29 is fixed to the upper end portion 7 of the screen storage tube 3, and the net 5 is pulled out from the screen storage tube 3, so that the winding spring 27 is loosened. Is generated, and an urging force is generated in a direction in which the net 5 is wound into the screen storage tube 3.

The upper end portion 7 and the lower end portion 8 of the screen storage tube 3 are provided with automatic braking devices 11, 12 which are a feature of the present invention. A handle 4 is provided substantially at the center of the screen storage tube 3, and the screen 4 is moved by holding the handle 4 so that the net 5 can be pulled out. FIG.
FIG. 3 is a perspective view showing a state in which an automatic braking device 12 is mounted on the lower end 8 of the screen storage tube 3. FIG. 4 is a partial cross-sectional side view of the automatic braking devices 11 and 12, showing the structure of the automatic braking devices 11 and 12.

The automatic braking devices 11 and 12 have holders 13 and 14 for holding a braking device main body 31 for braking the screen storage tube 3. Provided on the upper end 7 and the lower end 8 of the screen storage tube 3 are connection protrusions that protrude laterally,
The holders 13 and 14 are also provided with engaging portions 15 protruding laterally, so that the protrusions of the screen storage tube 3 and the holders 13 and 1 are provided.
The holders 13 and 14 are fixed to the upper end portion 7 and the lower end portion 8 of the screen storage tube 3 by connecting with the engaging portions 4. The holders 13 and 14 are provided with a storage tube abutment portion 16 protruding laterally, and the storage tube abutment surface of the storage tube abutment portion 16 is curved to match the side surface of the screen storage tube 3.
When the holders 13 and 14 abut against the screen storage tube 3, the storage tube abutment surface of the storage tube abutment portion 16 is in close contact with the side surface of the screen storage tube 3.

As shown in FIG. 4, a compression spring 21 is in contact with the inside of the lower part of the holder 13 of the automatic braking device 11 mounted on the upper end 7 of the screen storage tube 3. A vertical bearing groove 17 is formed inside the front and rear walls of the holder 13, and the end of the central shaft 32 of the braking device main body 31 is interposed in the bearing groove 17, and the braking device main body 31 is compressed by the compression spring. 21
The brake device main body 31 is provided so as to be able to slightly change its position up and down by being in contact with the upper end of the brake device.

As shown in FIG. 4, a compression spring 21 is in contact with the upper inside of the holder 14 of the automatic braking device 12 mounted on the lower end portion 8 of the screen storage tube 3. A vertical bearing groove 17 is formed inside the front and rear walls of the holder 14, and the end of the central shaft 32 of the braking device main body 31 is interposed in the bearing groove 17 so that the braking device main body 31 is connected to the compression spring. 21 is in contact with the lower end. In addition, holder 1
A screw hole 18 is formed in the upper part of the screw 4, and a position adjusting screw 22 is screwed into the screw hole 18. Further, a spring receiver 20 is interposed between the holder 14 and the compression spring 21, and a washer 23 is fixed to a position adjusting screw 22 penetrating the spring receiver 20. By turning the position adjusting screw 22 and moving the position adjusting screw 22 up and down, the position of the braking device main body 31 is adjusted. The washer 23 may be an E-ring, and, as shown in FIG.
It is preferable that a safety cap 24 is placed on the upper end of the cover.

FIG. 5 is a partial cross-sectional side view of the braking device main body 31, showing the structure of the braking device main body 31. As shown in FIG. The braking device main body 31 is provided with a rail 10 provided along the horizontal frame member 2.
A wheel member 33 that can travel on the upper side and a braking member 34 that brakes the screen storage tube 3 are coaxially supported.
The wheel member 33 is configured integrally with a wheel portion 35 running on the rail 10 provided on the horizontal frame member 2 and a center rotating portion 36 positioned inside the wheel portion 35. The web 37 of the wheel 35 is brought into contact with the rail 10 provided on the horizontal frame member 2 of the window frame 1 so that the automatic braking devices 11 and 12 can travel. Further, flanges 38 are provided on both sides of the wheel portion 35 so that the wheel member 33 does not derail from the rail 10. In addition, the braking member 34 is mounted on the wheel member 3.
3, a central rotating portion 39 having substantially the same diameter as the central rotating portion 36, and an outer cylindrical portion 40 positioned outside the central rotating portion 39.
And are integrated. Further, the wheel member 33 and the braking member 34 are pivotally supported on the central shaft 32 to
The wheel member 33 and the braking member 34 are connected to each other by abutting the center rotating portion 36 of the brake member 34 and the central rotating portion 39 of the braking member 34. A U-shaped base 44 is provided outside the wheel member 33 and the braking member 34, and both ends of the base 44 are supported on the center axis 32, and a surface parallel to the center axis 32 of the base 44 is provided. The compression spring 21 is smoothened so as to abut. Further, a washer 45 is provided outside the base 44 which is pivotally supported by the center shaft 32, and the washer 45 is used to
The braking member 34 and the base 44 are fixed.

An inner wrapping spring 41 is wound around a center turning portion 36 of the wheel member 33 and a center turning portion 39 of the braking member 34.
The inner tightening spring 41 is wound so that 1 tightens the center turning portion 36 of the wheel member 33 and the center turning portion 39 of the braking member 34. Further, an outer constriction spring 42 is wound around the outer cylindrical portion 40 of the braking member 34, and the winding direction of the outer constriction spring 42 is wound in a direction opposite to the winding direction of the inner constriction spring 41. Further, the inner tightening spring 41 is provided with a raw winding portion 43, and the raw winding portion 43 is positioned so as to face an abutting portion between the center turning portion 36 of the wheel member 33 and the center turning portion 39 of the braking member 34. The unwrapped portion 43 prevents the inner tightening spring 41 from intervening in the butted portion. Although the winding diameters of the inner and outer constriction springs 41 and 42 are different, they may have the same diameter. In addition, the winding wire thickness, the number of windings, and the winding diameter of these wrap-around springs 41 and 42 may be freely adjusted according to the target strength of the rotational braking.

The screen door opening / closing device configured as described above is attached to the window frame 1 as follows. The web 37 of the wheel member 33 provided on the automatic braking device 11 is matched with the rail 10 provided along the upper horizontal frame member 2, so that the wheel member 33 can travel along the rail 10. Subsequently, the web 37 of the wheel member 33 provided in the braking device 12 is also fitted on the rail 10 on the lower side of the screen storage tube 3. Further, the position of the braking device main body 31 of the braking device 12 is adjusted with the position adjusting screw 22 provided on the braking device 12 so that the screen storage tube 3 is parallel to the vertical frame member 1 so that the screen storage tube 3 does not fall. I do. Further, as shown in FIG. 1, when the other vertical edge 6 of the screen 5 that is out of the storage slit of the screen storage tube 3 is fixed to the left vertical frame member 1, the screen door attached to the window frame can be opened and closed. Become.

In order to pull out the net 5 with the screen door opening / closing device attached to the window frame as described above, first, as shown in FIG. 1, the handle 4 is gripped and the screen storage tube 3 is moved horizontally to the right. . With the horizontal movement of the screen storage cylinder 3,
A traveling wheel 9 provided at a lower end portion 8 of the screen storage tube 3 runs on a lower edge of the horizontal frame member 2, and a winding shaft 19 provided in the screen storage tube 3 rotates to pull out the net 5. It is. Further, since both ends of the spring shaft 25 inserted into the winding shaft 19 are fixed to the winding shaft 19 and the upper end 7 of the screen storage tube 4, by pulling out the screen 5 from the screen storage tube 4, The winding spring 27 becomes loose and the mesh 5
Is generated in the screen storage cylinder 4 in the winding direction.

The upper end 7 and the lower end 8 of the screen storage tube 3
The automatic braking devices 11 and 12 provided in the first embodiment operate as follows. When the traveling wheel 9 provided at the lower end 8 of the screen storage tube 3 travels along the lower edge of the horizontal frame member 2, the wheel members 33 of the automatic braking devices 11 and 12 are mounted on the rail 10 provided on the horizontal frame member 2. Rolling. When the wheel member 33 rolls and runs, the inner tightening spring 41 tightens the center turning portion 36 of the wheel member 33 and the center turning portion 39 of the braking member 34, and the braking member 34 turns in the same direction as the wheel member 33. Move. On the other hand, since the winding direction of the outer wrapping spring 42 is opposite to that of the inner wrapping spring 41, the outer wrapping spring 42 acts in a loosening direction, and the outer wrapping spring 42 and the outer cylindrical portion 40 of the braking member 34. And the wheel member 33 that rotates integrally with the braking member 34 rotates with resistance. When the screen storage tube 3 is moved and the net 5 is pulled out by such an action, the screen storage tube 3 has a certain resistance. When the screen storage tube 3 is stopped at an arbitrary position, the respective closing springs 41 and 42 are provided. Is the wheel member 33
Then, the braking member 34 is tightened, and the screen storage tube 3 stops at an arbitrary position.

Subsequently, in order to wind up the net 5, as shown in FIG. 1, the screen storage cylinder 3 is horizontally moved to the left.
At this time, the wound spring 27 that has become loose tends to wind up the net 5 by the return action. At the same time, the wheel members 33 of the automatic braking devices 11 and 12 rotate, and the wheel members 33
Inner tightening spring 4 wound around the center rotating portion 36
1 rotates in the loosening direction. This loosens the tightening of the inner tightening spring 41 on the center turning portion 39 of the braking member 34, which abuts against the center turning portion 36 of the wheel member 33, so that the wheel member 33 turns with some resistance. When the screen housing cylinder 3 is moved to wind the net 5 by such an action, there is a certain degree of resistance. Therefore, there is no possibility that the net 5 is wound vigorously by the biasing force of the winding spring 27. The net 5 can be wound at any speed. Also, the screen storage tube 3
Are stopped, the respective closing springs 41 and 42 tighten the wheel member 33 and the braking member 34, and stop the screen storage tube 4 at an arbitrary position.

In the present invention, in addition to the screen net, a roll blind, a projection screen, or the like can be similarly configured and perform the same operation. Also,
In the present embodiment, the screen storage tube 4 is moved in the horizontal direction to open and close the screen door. However, the screen storage tube 4 may be moved in the vertical direction to open and close the screen door. is there. At this time, the horizontal frame member becomes the vertical frame member 1 and the vertical frame member becomes the horizontal frame member 2.

[0020]

As described above, the screen opening / closing device of the present invention has a screen storage cylinder provided in parallel with the vertical frame member of the rectangular frame, and this screen storage cylinder can be moved along the horizontal frame member of the rectangular frame. A winding shaft is provided in the screen storage tube, and one edge of a screen such as a net or a roll blind is attached to the winding shaft, and the screen is wound so that the screen can be taken in and out of the screen storage tube. A screen opening and closing device in which the other edge of the screen is attached to a vertical frame member of the rectangular frame, wherein an automatic braking device for automatically braking the screen storage cylinder is provided at both ends of the screen storage cylinder. Therefore, even if the screen is stopped at any position, the screen storage cylinder can be automatically stopped at any position by the braking action of the automatic braking device. A. In addition, by the return action of the winding spring, there is no fear that the screen is wound vigorously, the screen can be wound at an arbitrary speed, and the screen opening and closing device with high safety can be provided. is there.

In addition, a spring shaft is inserted into the winding shaft,
The spring shaft is formed by winding a winding spring around a mandrel, fixing one end of the mandrel to the winding shaft, and fixing the other end of the mandrel to the end of the screen storage cylinder. There is an effect that winding can be performed easily as in the case of drawing out the screen.

Further, the automatic braking device has a holder, and the holder is mounted on each of both ends of the screen storage cylinder. A compression spring is brought into contact with the holder, and the compression spring is attached to the braking device body. Abuts, so that there is no danger that the screen storage cylinder will come off from the rectangular frame, and the screen storage cylinder can be smoothly opened and closed in parallel with the vertical frame member of the rectangular frame. There is an effect that can be done.

Further, a screw hole is formed in a top portion of a holder to be mounted on one end of the screen storage cylinder, a position adjusting screw is screwed into the screw hole, and a washer is provided between the holder and the compression spring. Since the washer is fixed to the position adjustment screw, the position adjustment screw is used to adjust the position of the braking device, whereby one end of the screen storage cylinder is stabilized, and the screen storage cylinder may come off from the rectangular frame. Without the screen storage tube always parallel to the vertical frame member of the square frame,
There is an effect that the screen can be opened and closed smoothly.

The braking device body further includes a wheel member that can run on a rail provided along the horizontal frame member;
A braking member for braking the screen storage cylinder is coaxially supported and provided, and the wheel member integrally includes a wheel portion running on a rail and a center rotating portion positioned inside the wheel portion. The braking member is configured by integrally integrating a center turning portion having substantially the same diameter as a center turning portion of the wheel member, and an outer cylindrical portion positioned outside the center turning portion,
A braking member and a wheel member are connected in series by abutting a center rotating portion of the wheel member and a center rotating portion of the braking member, and the center rotating portion of the wheel member and the center rotating portion of the braking member are connected to each other. Since the inner tightening spring is wound, and the outer tightening spring is wound around the outer cylindrical portion of the braking member in a direction opposite to the winding direction of the inner tightening spring, one of the turning directions is heavy, The other can be made lighter, the strength can be arbitrarily determined, and the screen storage cylinder can be stopped at an arbitrary position.
In addition, according to the present invention, there is no need to provide a special spring or the like.

[0025] Further, since an inner winding portion is provided on the inner side compression spring, and this unwinding portion faces the abutting portion between the center turning portion of the wheel member and the center turning portion of the braking member, the element winding portion is provided. There is an effect that the winding part prevents the winding spring from intervening in the butting part, and the brake device can be operated smoothly.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which an embodiment of an opening / closing device for a net or a curtain according to the present invention is attached to a window frame.

FIG. 2 is an exploded front view of a main part of the embodiment shown in FIG. 1;

FIG. 3 is a perspective view showing a state in which a braking device is mounted on a lower end portion of the screen storage cylinder of the embodiment shown in FIG. 1;

FIG. 4 is a partial sectional side view of the braking device of the embodiment shown in FIG. 1;

FIG. 5 is a partial cross-sectional side view of the braking device body of the embodiment shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical frame member 2 Horizontal frame member 3 Screen storage cylinder 4 Handle 5 Net 6 Other vertical edge of net 5 7 Upper end of screen storage cylinder 3 8 Lower end of screen storage cylinder 3 9 Running wheel 10 Rail 11, 12 Automatic braking Apparatus 13, 14 Holder 15 Engagement part 16 Storage cylinder abutment part 17 Bearing groove 18 Screw hole 19 Winding shaft 20 Spring receiver 21 Compression spring 22 Position adjustment screw 23 Washer 24 Cap 25 Spring shaft 26 Mandrel 27 Winding spring 28 Lock Fixture 29 Fixing device 31 Braking device main body 32 Center axis 33 Wheel member 34 Braking member 35 Wheel portion 36 Center rotating portion of wheel member 33 Web 38 Flange 39 Center rotating portion of braking member 34 40 Outer cylindrical portion 41 Inner tightening Spring 42 Outer winding spring 43 Raw winding part 44 Base 45 Washer

Claims (6)

[Claims] 1. A screen storage cylinder is provided in parallel with a vertical frame member of a rectangular frame, the screen storage cylinder is movable along a horizontal frame member of the rectangular frame, and a winding shaft is provided in the screen storage cylinder. Is provided on the winding shaft, one edge of a screen such as a net or a roll blind is attached, and the screen is wound so that the screen can be taken in and out of a screen storage tube, and the other edge of the screen is formed by the square frame. The screen opening and closing device attached to the vertical frame member, wherein an automatic braking device for automatically braking the screen storage tube is provided at both ends of the screen storage tube. 2. A spring shaft is inserted into the winding shaft, and the spring shaft is wound around a mandrel, one end of the mandrel is fixed to the winding shaft, and the other end of the mandrel is connected to the screen. 2. The screen opening / closing device according to claim 1, wherein the screen opening / closing device is fixed to an end of the storage cylinder. 3. The automatic braking device has a holder, and the holder is mounted on each of both ends of the screen accommodating cylinder, and a compression spring is brought into contact with the holder. The screen opening / closing device according to claim 1 or 2, wherein the screen opening / closing device is configured so as to abut. 4. A screw hole is formed in a top portion of a holder attached to one end of the screen storage cylinder, a position adjusting screw is screwed into the screw hole, and a washer is provided between the holder and the compression spring. 4. The screen opening / closing device according to claim 3, wherein the washer is fixed to the position adjusting screw. 5. The braking device main body, wherein a wheel member that can run on a rail provided along the horizontal frame member and a braking member that brakes the screen storage cylinder are coaxially supported and provided, The wheel member is configured integrally with a wheel portion traveling on a rail and a center rotating portion positioned inside the wheel portion, and the braking member is substantially the same as a center rotating portion of the wheel member. A center turning portion having the same diameter and an outer cylindrical portion positioned outside the center turning portion are integrally formed, and a center turning portion of the wheel member and a center turning portion of the braking member are formed. The braking member and the wheel member are continuously connected to each other, and an inner tightening spring is wound around the center turning portion of the wheel member and the center turning portion of the braking member, and the outer tightening spring is wound around the outer cylindrical portion of the braking member. Wind the spring in the direction opposite to the winding direction of the inner tightening spring. The screen opening / closing device according to claim 1, which is wound. 6. The inner winding spring is provided with an elementary winding portion, and the elementary winding portion faces a butting portion between a center turning portion of the wheel member and a center turning portion of the braking member.
The screen opening / closing device as described in the above.