JPS62157022A - Take-up type screen device - Google Patents

Abstract

PURPOSE:To take up a screen smoothly even if the screen is large in size, by engaging and disengaging freely a guide rail and a detention edge fitting detaining part as both members of a fastener by a slider. CONSTITUTION:Detention edges 7a attached to both of right and left edges of a screen throughout in the lengthwise direction are one member of a fastener 10 consisting of a pair of fastener members which have halves of faces in the breadthwise direction facing each other and are provided with plural parallel verticals ribs 8 on faces facing each other and are provided with hook edges 9, which can be engaged with one another, in front end parts of two ribs in front sides. The fastener 10 is closed and opened freely by a slider 14 which fits the detection edge 7a and an detection edge fitting detaining part 7b to each other. The slider 14 is supported by a rail 13 and is run and is fixed to both ends of a crosspiece 15 for operation. Thus, the screen is pulled out and is wound around a take-up shaft 2 without resistance, and the operation is made very easy.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a screen device that uses a screen like a large projection screen.1 [Prior Art and Problems Therewith] As a screen device, a screen There are some that can be pulled out or rolled up. The mechanism is such that a winding shaft is supported on one side of the square frame, and one end of a screen that can be expanded within the square frame is fixed to the winding shaft, and locking edges are attached to the left and right edges of the screen. A guide rail for the screen is provided on the left and right side frame portions of the square circumferential frame, and a locking portion for fitting the locking edge of the screen is provided on the rail, and the winding shaft is provided with restorability in the winding direction. This is what was granted (Utility Kaikai 59-
No. 140695).

By the way, there is no problem if the screen is a sheet that opens and closes the opening of a building's window screen or a box or cover for equipment, etc., but when the screen is large, it may be difficult to engage the locking edges when pulling out or winding up the screen. The frictional resistance when the locking part for fitting the retaining edge slides is large, so even if it is possible to pull out the screen, when winding it up, it is necessary to hold the crosspiece fixed to the free end of the screen and push it in the winding direction. When the screen is rolled up, only the leading edge of the screen moves, causing wrinkles in the middle and making winding impossible.

An object of the present invention is to provide a screen device that can smoothly wind up a screen even if the screen is large.

[Means for solving problems]

In order to solve the above problems, the present invention uses a screen such as a large projection screen, and the guide rail and the locking portion for fitting the locking edge are opposite to each other in the width direction of one side and are opposite to each other. Both members of the fastener have a plurality of vertical ribs running parallel to each other on the surface and have hook edges that can engage with each other at least at the tips of the ribs on the distal end side, and can be engaged and separated with a slider, and the slider is passed through both members. Moreover, this is a roll-up type screen device fixed to both ends of an operating bar.

[Effect]

The slider (operation crosspiece) is set so that it does not move any further towards the winding shaft at the end of the locking part for fitting the locking edge on the winding shaft side, and the slider is used for pulling out the screen and for winding. By moving the crosspiece toward the take-up shaft side, when the screen is moved, the locking edge on the free side of the screen is disengaged from the locking edge fitting portion, and the slider operation crosspiece is moved toward the screen. They fit together by moving to the free end of the

〔Example〕

1 to 3 show an example of a screen device in which the screen is a large projection screen, 1 is a corner frame thereof, 2 is a box 4 attached to an upper frame part 3 of the corner frame 1, and a shaft is supported in a box 4. This winding shaft is equipped with a winding spring at its axial center to provide restorability in the winding direction, but the winding spring is not shown because it is well known.

One end of a screen 5 is wound and fixed on the winding shaft 2, and a pullout bar 6 for unwinding is attached to the lower end of the screen.
is attached.

As shown in FIG. 4, locking edges 7a are attached to the left and right edges of the screen 5 along its entire length. The illustrated locking edge 7a has a distal end portion of two ribs facing each other in the width direction of one surface, a plurality of vertical ribs 8 parallel to each other, and two ribs on the distal end side, as shown in enlarged FIG. 5. hook edges 9 that can engage with each other
This is one member of a fastener 10 of a form consisting of a pair of fastener members.

The material of the fastener 10 is, for example, a tough, slippery, and abrasion-resistant thermoplastic synthetic resin such as polyamide resin, which is heated and pressed to the screen 5 in a semi-molten state. Reference numeral 11 denotes a tape made of the same material that is placed on the opposite side of the screen at a position opposite to the locking edge 7a and similarly welded. It is installed properly.

As shown in FIG. 6, a rail 13 is attached to the opposing inner surfaces of the left and right side frame portions 12 of the square frame 1, and this rail has a locking portion 7b having the same shape and the same material as the locking edge 7a. However, the fitting surface (rib 8b) is fixed in such a direction that it faces the fitting surface (rib 8a) of the locking edge 7a.

14 is a slider for fitting the locking edge 7a and the locking edge fitting locking portion 7b, and this slider is connected to another operating crosspiece 1.
5, and as shown in FIG.
When it is pulled out from the groove 17 which passes through the locking part 7b from one end and joins at the other end, the fitting parts (both ribs 8a, 8b) are engaged.

The slider 14 is supported by the rail 13 and runs. However, on the winding shaft 2 side, it is assumed that it is received by a stopper so as not to come off from the locking portion 7b.

The stopper is not shown.

〔effect〕

In the roll-up type screen device of the present invention, the engaging edges on both side edges of the screen and the engaging edge fitting locking portions fixed to the rails on the left and right side frame portions of the corner frame are arranged at 1/1/2 width direction of one side of each other. 2 facing each other, and having a plurality of parallel longitudinal ribs on the opposing surfaces, and having hook edges that can engage with each other at least at the tips of the ribs on the tip side, the slider can be engaged and separated as both members of the fastener. is passed through both members and fixed at both ends for operation, so when pulling out the screen or winding it onto the winding shaft, the slider is attached to the upper end (winding shaft side) of the locking part for engaging the engaging edge. By positioning the screen in the position, the engaging part of the screen is free and the frictional resistance is only at the part where the slider is located, so there is almost no resistance.When the screen is completely pulled out, the slider is moved to the free end of the screen. By moving the screen, the locking edge and the locking portion engage over the entire length, and this has the effect that even in the case of a large screen, it becomes extremely easy to pull out or roll in the screen.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Figure 1 is a perspective view of the roll-up screen device, Figure 2 is an enlarged partially cutaway front view of the same, Figure 3 is a partially cutaway right side view of the same, and Figure 4 is a partially cutaway right side view of the same. 5 is an enlarged cross-sectional view of the main parts of the screen only, FIG. 6 is a cross-sectional view of the guide rail section, and FIG. 7 is a vertical cross-sectional side view of the slider. 1. Corner frame, 2. Winding shaft, 5. Screen, 7a.
- Locking edge, 7b...Locking part for fitting the locking edge, 8...Rib,
9... Hook edge, 10. Fastener, 13... Rail,
14...Slider, 15...Operation crosspiece. Patent applicant Sei Hayashiguchi Sando agent Fumi Kamata

Claims (1)

[Claims] A winding shaft is supported on one side of the corner frame, and one end of a screen with an area that can be expanded within the corner frame is fixed to the winding shaft, and locking edges are provided on the left and right edges of the screen. A winding device in which guide rails for the screen are provided on the left and right side frame portions of the peripheral frame, locking portions for fitting the locking edges of the screen are provided on the rails, and the winding shaft is given resilience in the winding direction. In the type screen device, the locking edges on both the left and right sides of the screen and the locking portions for fitting the locking edges are spaced apart from each other by 1/1 in the width direction.
2 facing each other and having a plurality of parallel longitudinal ribs on the opposing surfaces, and at least the distal end portions of the ribs having hook edges capable of engaging with each other, the two members of the fastener can be engaged and separated by a slider, and the slider A roll-up type screen device, characterized in that it passes through both members and is fixed to both ends of an operating bar.