JP2565373B2 - Wind-up screen device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a roll-up type screen device having two types of screens for different purposes.

[Prior Art] As a winding type screen device having two kinds of screens having different uses, for example, one described in Japanese Patent Publication No. 55-45717 is known. This is a system in which two winding rolls are provided above and below a door frame, and a shielding sheet and a net sheet that form a cover sheet are wound around these winding rolls. Both sheets can be selectively used depending on whether the net sheet is wound up.

However, the above-mentioned conventional one has a drawback in that the shielding sheet and the mesh sheet are connected and integrated, so that they can be used properly, but it is not possible to select a fully open state in which both sheets are not used. It was

On the other hand, JP-A-49-118254 discloses a blind part formed by connecting a plurality of different types of seats with a vacant space so that the fully opened state can be selected by the vacant space. However, the winding operation is very troublesome, for example, in the case where the sheet farthest from the empty space is used and the seat is fully opened.

[Problems to be Solved by the Invention] The problem to be solved by the present invention is that it is possible to easily use the two screens selectively and to fully open both screens. An object of the present invention is to provide a wound-up type screen device.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a screen in which winding shafts are provided at both ends of a screen frame, and the winding shafts are made of a flexible sheet for different purposes. In a screen device in which the screen is wound around a common screen guide so that it can be drawn out and wound up, a frame for opening and closing operation is attached to the tip of each screen, and these frames can be connected and disconnected with each other. At both ends of the two screens, locking strips of the same structure, in which a large number of small projections for engagement are fixed at required intervals on both sides of the edge, are attached, and the small projections are placed in the screen guide. A state in which both frames are connected to the common screen guide and the frame provided at the tip of each screen by slidably engaging the inner edge of the slit of the middle rail provided. It is characterized in that a notch is provided as a stop means for individually stopping at a plurality of intermediate positions and a projecting and retracting protrusion engaged with the notch.

[Operation] When the frames attached to the two screens are connected to each other, the two screens can be selectively used by winding one of the screens, or the frames can be separated from each other. Can be fully opened by winding both screens together. Further, the frames of both screens may be connected to each other, or they may be independently stopped at an intermediate position.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a screen frame attached to the inside or outside of a glass shoji in a building opening such as a window, and the screen frame 1 uses an elastic restoring force associated with the twist of a coil spring as a drive source. It consists of upper and lower take-up boxes 2 and 3 with built-in take-up shafts 5 and 6, and left and right screen guides 4 and 4 that connect the ends of these take-up boxes 2 and 3. Two types of screens 7 and 8 which are made of flexible sheets and have different uses, such as an insect net and a heat insulating sheet, are provided on the shafts 5 and 6, respectively.
The screens 4 and 4 are wound around the screens 7 and 8 so that the screens 7 and 8 can be freely extended and taken up, and the frames 9 and 10 for opening and closing are attached to the tips of the screens 7 and 8, respectively.

At the left and right ends of the screens 7 and 8, as shown in FIGS. 2 and 3, a large number of small projections 15 for engagement are arranged at regular intervals on both sides of the edge of the cloth tape 14. The locking band 13 is attached, and the locking band 13 is slidably inserted into the slit 19 of the middle rail 18 arranged in the screen guides 4, 4, and the small protrusion 15 thereof is an inner edge of the slit 19. It is engaged in a state that it does not come off.

The small projection 15 in the locking band 13 is formed by bending a thin wire made of synthetic resin and having a circular cross section into a U shape, and fixing it by sewing with a thread 16 so as to be parallel to the tape surface. The bent portion 15a is used as an engaging portion that engages with the inner edge of the slit 19. These small protrusions located on both sides of tape 14
As shown in the figure, 15 can be formed as a continuous one by sequentially bending one thin wire so as to straddle the tape 14, and in this case, the small protrusions 15 on both sides of the tape are 180 degrees out of phase with each other. Will be in a state.

Further, the middle rail 18 is, as shown in FIG. 2, a protector 2 fixedly attached to the screen guides 4, 4.
0 through the cushion material 21 through the screen guides 4, 4
The inner rails 18 are attached to the inside of the two screen guides 4 and 4 by the cushion material 21 so that the middle rails 18 of the two screen guides 4 and 4 are spaced apart from each other, and the screens 7 and 8 are held in appropriate tension. . In this case, the middle rail 18 may be fixed to the screen guides 4 and 4 with screws or the like at a position where the screens 7 and 8 maintain appropriate tension.

The middle rail 18 is formed of a synthetic resin in order to enhance slidability with the locking band 13, and it is formed of the screen guides 4, 4
Although it may be disposed inside, the metal may be formed of aluminum or the like, or the middle rail 18 may be integrated with the screen guides 4 and 4 without being configured separately.

Further, the frames 9 and 10 attached to the end portions of the two screens 7 and 8 are configured to be connectable and disconnectable to each other by a connecting fitting 24. When they are connected, the screens 7 and 8 are Both screens 7 and 8 can be selectively used by winding either side up or down. If the two frames 9 and 10 are separated, both screens 7 and 8 can be used.
By winding 7,8 together, they can be fully opened.

The left and right screen guides 4, 4 are provided with locking notches 25 at predetermined intervals so that the screens 7, 8 can be locked at an intermediate open position (state of FIG. 1). On the other hand, at either end in the lengthwise direction of either one of the frames 9, a protrusion 26 that engages with the notch 25 is provided in the protruding direction by a spring. Reference numeral 27 is an operator for operating the protrusion 26 in and out.

The strengths of the two winding shafts 5 and 6 may be similar to each other, but either one may be set stronger than the other.

In the screen device having the above structure, when the frames 9 and 10 are connected to each other by the connecting metal fittings 24, either of the upper and lower screens 7 and 8 can be wound up to selectively use both screens 7 and 8. At that time, by engaging the protrusion 26 of the frame 9 with the notch 25 of the screen guide 4, 4, the screen 7, 8 can be stopped at the intermediate open position.

When the two frames 9 and 10 are separated, both screens 7 and 8 can be fully opened by winding them together.

The protrusions 26 are provided on both the frames 9 and 10, whereby the two separated screens 7 and 8 can be stopped in the half-opened state. It should be noted that, when the two frames 9 and 10 are connected, either the protrusions provided on one of the frames can be stored so that they do not interfere with the locking of the protrusions provided on the other frame, or both protrusions can be stored together. It is desirable to be able to lock in the notch.

Further, the two screens are not limited to the insect repellent net and the heat insulating sheet, but may be sheets having different light transmittances, and their combination and the vertical relationship are arbitrary.

FIG. 4 shows another example of the structure of the locking band.
In the case of 33, a large number of independent small protrusions 35 are sandwiched by the edge of the tape 34 so as to straddle the tape 34.

The locking bands 13 and 33 can be configured by one of a pair of meshing bands in a commercially available synthetic resin fastener.

In addition, in the illustrated embodiment, the case where the screen device is configured as a vertical opening type has been described, but it may be configured as a horizontal opening type, and its applicable range is to be attached to a building opening such as a window. The present invention is not limited to the above, and can be applied to a screen device attached to an opening of a freezer showcase, a catering car, or the like.

[Effects of the Invention] As described above, according to the present invention, in a roll-up type screen device having two types of screens having different uses, a frame for opening and closing is attached to the tip of each screen, and these frames are attached. Since they can be freely connected and disconnected from each other, by connecting and disconnecting these frames, they can be easily used when selectively using the above two screens or when both screens are wound together and fully opened. Moreover, by engaging the protruding and retractable protrusions of the frame and the notches of the screen guide with each other, the screen is surely stopped in a state in which both the frames are connected to each other and independently at a plurality of intermediate positions. It is possible to obtain a roll-up type screen device that is convenient for use.

Further, locking bands having the same structure, in which a large number of small projections for engagement are fixed on both sides of the edge at fixed intervals, are attached to both side ends of the two screens made of a flexible sheet. Since the small protrusion is slidably engaged with the inner edge of the slit of the middle rail arranged in the screen guide, two screens of different structures with different applications can be used with a common screen guide and locking band. Thus, it is possible to smoothly and surely guide the opening and closing in the retaining state.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a part of the drawing taken along the line AA, and FIG. 3 is a partial front view showing the structure of a locking band. FIG. 6 is a partial perspective view of another example of the structure of the locking band. 1 ... Body, 4 ... Screen guide, 5,6 ... Take-up shaft, 7,8 ... Screen, 9,10 ... Frame.

Claims (1)

(57) [Claims] 1. Winding shafts are arranged at both ends of a screen frame, and screens having different uses made of flexible sheets are wound around these winding shafts along a common screen guide so that the screens can be freely drawn and taken up. In the attached screen device, a frame for opening / closing operation is attached to the tip of each screen so that these frames can be connected and disconnected from each other, and both sides of the two screens have a large number of edges. By attaching a locking band having the same structure in which the small projections for engaging with each other are fixed at required intervals, the small projections are slidable on the inner edge of the slit of the middle rail arranged in the screen guide. Engage, the common screen guide and the stile provided at the tip of each screen, the two stiles are connected to each other, and each stop alone stops at a plurality of intermediate positions. It provided with notches and retractable of projections which engage therewith as a means, winding type screen device, characterized in that.