JPH0550448U - Screen storage box - Google Patents

Abstract

(57) [Summary] [Structure] A screen storage box 1 having a screen 6 and a screen lifting mechanism for forcibly lifting the screen 6, and the upper lid 3 of the screen storage box 1 is stored so that it can be opened. A rod 5 that is locked to the box body 2 and moves on the lower surface of the upper lid 3 together with the horizontal rod 7 at the upper end of the screen 6.
To form rod-fitting grooves 4 and 4 for closing the upper lid 3 by being engaged at the end of descent, and temporarily fixing the upper lid 3 in the open position between the upper lid 3 and the storage box body 2. It is characterized by being installed. [Effect] Since the upper lid 3 has the rod fitting grooves 4 and 4, and the rod 5 that moves up and down together with the screen can be freely fitted in these rod fitting grooves 4 and 4, the upper lid 3 can be opened and closed by the lifting operation of the screen. Done Therefore, if the screen elevating mechanism is remotely controlled, the screen 6 can be set and stored without approaching the screen storage box 1, and the operation is easy for small children and the elderly.

Description

[Detailed description of the device]

The present invention relates to an improvement of a screen storage box.

[0002]

[Prior Art]

 Since ancient times, there has been an increasing demand for screens for slide projection, OHP (overhead projector) projection, and in recent years for video projectors.

When the screen is used frequently, there is a system in which the screen is housed in the ceiling and the screen is unwound by an electric motor or the like when used. Since it is permanently installed on the ceiling, there are drawbacks that the location is limited and the equipment cost increases. Therefore, movable and cheaper screen equipment is desired.

Therefore, a so-called slide-up screen, in which a movable screen storage box is installed on a desired floor and the screen is lifted from the screen storage box by a link mechanism or the like, has been attracting attention.

FIG. 8 is a rear view of a conventional slide-up screen, and FIG. 9 is a side view of the same. The screen storage box 100 comprises a slender storage box main body 101 and an upper lid 102 which is releasably locked by hinges 103.

To store the screen 104, the drum 105 shown in FIG. 9 is rotated, and the horizontal rod 106 at the upper edge of the screen 104 is pushed down as necessary. The left and right doglegged links 107, 107 may be folded, and the upper lid 102 may be closed with the links 107, 107 and the screen 104 housed in the storage box body 101.

When setting the screen 104, the upper lid 102 may be manually opened to raise the screen 104. The screen 104 is slightly lifted by the assistance of the tension spring 108.

[0008]

[Problems to be solved by the device]

 In recent years, as screens have become larger and heavier, and due to automation, there is a need for a screen that can be forcibly moved up and down by a drive source such as a motor.

It is troublesome to manually open and close the upper lid 102, and if a motor for opening and closing the upper lid is provided separately from the screen raising and lowering motor, the screen storage box becomes heavy and complicated.

Therefore, an object of the present invention is to provide a screen storage box provided with a mechanism for opening and closing the screen together to open and close the upper lid.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, the upper lid is locked to the main body of the storage box so that the upper lid can be opened, and the rod that moves together with the horizontal rod at the upper edge of the screen is engaged with the lower surface of the upper lid at the end of the descent. A rod fitting groove for closing the upper lid is formed, and a stopper mechanism for temporarily fixing the upper lid at the open position is provided between the upper lid and the storage box body.

[0012]

[Action]

 The upper lid is pushed up by the ascending horizontal rod or rod to be in the open state, and the open state is held by the stopper mechanism. When the screen is stored, the rod engages with the rod fitting groove of the top cover to close the top cover. Therefore, it is possible to automatically open and close the lid without the need to prepare a special drive source.

[0013]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of the reference numerals.

FIG. 1 is a view of a screen storage box according to the present invention. The screen storage box 1 comprises a storage box main body 2 and an upper lid 3 covering the main body.

FIG. 2 is a view showing a main part of the screen storage box according to the present invention. Rod fitting grooves 4 and 4 are formed on the lower surface 3a of the upper lid 3 by a member having an L section. The rod 5 is movably fitted to the pins 4 and 4. The rod 5 is mechanically integrated with the horizontal rod 7 at the upper end of the screen 6.

A stopper mechanism 8 is provided between the upper lid 3 and the storage box body 2.

The stopper mechanism 8 is preferably a gas stay, for example. That is, the gas / steel is a kind of damper in which a gas and oil are enclosed in a cylinder unit consisting of a piston, a piston rod and a cylinder, and the piston and piston rod move in the axial direction at low speed with a certain thrust or more. However, when the thrust is less than a certain value, the piston and piston rod remain stationary.

FIG. 3 is a cross-sectional view of the screen storage box according to the present invention. The screen storage box 1 formed by locking the upper lid 3 with the hinge 9 so as to open the screen storage box 1 inside the screen storage box 1 has a screen. The rod 6, which is integrated with the horizontal rod 7, is fitted into the rod fitting groove 4. In the figure, 11 is a remote control signal converter, 11a is a receiving window, and 12 is a screen housing.

FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, and FIG. 5 is a view taken in the direction of arrow 5 in FIG. In FIG. 5, the pantograph links 14, 14 of the screen lifting mechanism 10 are swingably stopped by a connecting rod 16 via bearings 15, 15, and a horizontal rod 7 is provided at one end of the connecting rod 16 and a rod is provided at the other end. 5 is fixed. As shown in FIG. 3, the rod 5 is fitted in the rod fitting grooves 4 and 4 and is movable in the front and back direction of the drawing.

The operation of the screen storage box having the above configuration will be described below. 6 (a) to 6 (c) are operation views of the screen storage box of the present invention, and FIG. 6 (a) shows a state in which the upper lid 3 is closed.

When the remote signal converter 11 is illuminated by a remote control signal transmitter (not shown), the converter 11 starts the screen drive mechanism 10.

The rod 5 that rises together with the horizontal rod 7 pushes up the upper lid 3 as shown in FIG. 6B. The rod 5 rises while sliding on the lower surface 3a of the upper lid 3, and finally comes out of the upper lid 3, that is, the rod fitting groove 4, as shown in FIG. 6C, and further rises.

The upper lid 3 is held by a stopper mechanism 8 (see FIG. 2) such as a gas stay in the state of FIG. 6C. On the contrary, when the screen 6 is stored, the rod 5 which is descending enters the rod fitting groove 4 of the upper lid 3 in the state of FIG. 6 (c), and thereafter the rod 5 is descending and the upper lid 3 is lowered. 3 is rotated in the closing direction.

FIG. 7 is an operation diagram of the slide-up screen including the screen storage box according to the present invention. The pantograph links 14 and 14 push the upper lid 3 in the same manner as described with reference to FIG. 6 to set the screen 6 in the set state. And

After the projection is completed, the pantograph links 14 and 14 are contracted, the top cover 3 is closed while descending, and the flow returns to FIG. It is more preferable that the rod 5 is provided with bearings having very small rotational resistance torque at both ends.

[0026]

[Effect of the device]

 As described above, according to the present invention, the upper lid is provided with the rod fitting groove, and the rod that moves up and down together with the screen can be freely fitted in the rod fitting groove. Therefore, it is not necessary to prepare a special motor for opening and closing the upper lid. Therefore, if the screen lifting mechanism is remotely controlled, the screen can be set and stored without approaching the screen storage box, and it is easy for small children and the elderly to operate.

[Brief description of drawings]

FIG. 1 is a diagram of a screen storage box of the present invention.

FIG. 2 is a view showing a main part of a screen storage box of the present invention.

FIG. 3 is a sectional view of the screen storage box of the present invention.

FIG. 4 is a sectional view taken along line 4-4 of FIG.

5 is a view taken in the direction of arrow 5 in FIG.

FIG. 6 is an operation diagram of the screen storage box of the present invention

FIG. 7 is a schematic view of a slide-up screen including a screen storage box according to the present invention.

FIG. 8 is a rear view of a conventional slide-up screen screen.

FIG. 9 is a side view of a conventional screen for a slide-up screen.

[Explanation of symbols]

1 ... Screen storage box, 2 ... Storage box main body, 3 ... Top lid, 4
... Rod fitting groove, 5 ... Rod, 6 ... Screen, 7 ... Horizontal rod, 8 ... Stopper mechanism, 10 ... Screen lifting mechanism,
14 ... Pantograph link.

Claims (1)

[Scope of utility model registration request] 1. A screen storage box having a screen and a screen lifting mechanism for forcibly lifting and lowering the screen, wherein an upper lid of the screen storage box is locked to the main body of the storage box so that it can be opened. A rod fitting groove for closing the upper lid is formed on the lower surface of the upper lid by a rod that moves together with the horizontal rod at the upper edge of the screen at the end of descent, and the upper lid is provided between the upper lid and the storage box body. A screen storage box that has a stopper mechanism that temporarily fixes it in the open position.