JPH0131745Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an opening/closing device for openings in buildings, and was devised for the purpose of providing a device that has a simple structure, can automatically open and close openings, and can be used for multiple purposes. That's what I did.

The drawings show one embodiment of the opening/closing device for building openings according to the present invention, and the embodiment shows an example in which the device of the present invention is installed at the entrance and exit of a dark room installed in a building.
In the figure, A shows a dark room, B shows an external room, and C shows an intermediate room interposed between the dark room A and the external room B. Between these rooms A, B, and C, there is a device D according to the present invention, The device D is operated by stepping on a footboard E, and the device D is constructed as follows.

The figure 1 is a base frame consisting of an upper frame 1a, a lower frame 1b, and left and right vertical frames 1c, 1c', and constitutes the entrance and exit between the rooms A, B, and C. One of the vertical frames 1 of the base frame 1 is
A rotating shaft 2 is installed between the upper and lower frames 1a and 1b on the c side, and the rotating shaft 2 has a winding roller 4 for the opening/closing sheet 3 in the middle part, wires 5a at both the upper and lower ends,
5b are equipped with take-up pulleys 6a, 6b, the upper end of which is connected to a motor 7 attached to the base frame 1, the base end of the opening/closing sheet 3 is attached to the take-up roller 4, and each take-up pulley 6a, The base end of each of the wires 5a, 5b is attached to the base end of each wire 5a, 5b so as to be able to be wound in the direction opposite to the winding direction of the opening/closing sheet 3 by the roller 4, and each wire 5a, 5b is Vertical frame 1 on the other side of frame 1
first guide rollers 8a, 8'a led out to the vertical frame 1c' and rotatably supported on the vertical frame 1c'; The reinforcing rods 9 are stretched over second guide rollers 8b and 8'b rotatably supported on the base frame 1, and their tips are fixed to both upper and lower ends of a reinforcing rod 9 provided at the tip of the opening/closing sheet 3. Springs 10a, 10b are interposed between the first guide rollers 8a, 8'a and the second guide rollers 8b, 8'b of the wires 5a, 5b, and both upper and lower ends of the reinforcing rod 9 are connected to the base frame. The guide holes 11a and 11b formed in the upper and lower frames 1a and 1b between the vertical frames 1c and 1c' are engaged with each other.

FIG. 2 shows a state in which the opening/closing sheet 3 closes the above-mentioned entrance/exit. In this state, the rotating shaft 2 is rotated by the motor 7 in the direction in which the opening/closing sheet 3 is wound up by the winding roller 4. When the opening/closing sheet 3 is wound up by the roller 4, the opening/closing sheet 3 is wound up by the winding pulley 6a, in the opposite direction to the winding direction.
The wires 5a and 5b wound around the pulley 6
a and 6b, the entrance and exit are opened, and when the motor 7 is operated in the opposite direction, each member returns to its original position.

It should be noted that the opening/closing sheet 3 may be made of any material such as canvas or a synthetic resin sheet, and any appropriate cord may be used in place of the wires 5a and 5b.Furthermore, the guide rollers may be provided as in the embodiment. This is not necessarily necessary.

In the embodiment, each device D, D is operated from the external room B side or the dark room A side by stepping on the footboard E, and the entrances and exits between the rooms are repeatedly opened and closed. Although the device is designed to prevent external light from entering, the device of the present invention can also be applied to a normal window device, and if necessary, it can be placed above and below the opening/closing seat.

The rotation shaft may be operated by a manual mechanism without using a motor.

Since the present invention has the above-mentioned configuration, openings in buildings can be opened and closed with a simple structure. In particular, since the winding error of the tether by the take-up pulley and the winding error of the opening/closing sheet by the winding roller can be absorbed by the spring interposed in the tether, the opening/closing state of the opening by the opening/closing sheet can always be maintained in good condition. I can do it.

[Brief explanation of the drawing]

The drawings show an embodiment of the opening/closing device for building openings according to the present invention, with FIG. 1 being a cross-sectional view and FIG. 2 being a front view of the main parts of the present invention. 2... Rotating shaft, 3... Opening/closing sheet, 4... Winding roller, 5a, 5b... Wire, 6a, 6b
...Take-up pulley, 8a, 8'a, 8b, 8'b...
...Guide roller, 10a, 10b...Spring.

Claims (1)

[Scope of utility model registration request] A rotating shaft connected to the rotating mechanism and equipped with a winding pulley at each end is installed on one side of the building opening, and the opening is closed by a winding roller provided at the middle of the rotating shaft. At the same time as attaching the base end of the opening/closing seat, one end of a tether with a spring interposed at an appropriate position in the middle is fixed to both ends of the front end of the opening/closing seat, and each other end of the tether is attached to the above-mentioned part of the building opening. An opening/closing device for an opening in a building, which is fixed to the winding pulley via a guide roller provided on the other side opposite to the winding roller so as to be able to be wound in a direction opposite to a direction in which the opening/closing sheet is wound by the winding roller.