JPH0420140Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a door opening/closing device, and more specifically, to a device that is used, for example, in a public phone box and can be easily opened even by a handicapped person.

[Conventional technology]

Public phone booths are designed to be larger than normal so that people with disabilities, especially those in wheelchairs, can access them. However, it is not easy to change direction inside the box, and therefore, when leaving the room after a call, the user must simply move backwards, making it extremely difficult to open the door.

Therefore, in order to eliminate this inconvenience, the door and the operating rod that can be moved up and down are connected in the box with a fixed length string-like body through a direction changing tool, and the direction can be changed by pushing the operating rod downward. There is a device in which a fixed-length string-like body moves through a tool and pulls the connected door in the opening direction to open the door, making it easier to exit the room.

Since the opened door is equipped with an auto-hinge that always closes the door, it naturally takes time to close, so there is sufficient time for exiting, and there is no need to close the door.

[Problem that the invention attempts to solve]

Although the above-mentioned conventional public phone booths have solved the inconvenience of leaving to some extent, they still require manual operation, and the conventional door opening operation is essential when entering.

Therefore, it would be most convenient to operate this mechanism using a motor rather than manually, and to place the switch for the operating motor inside and outside the public phone box, and it would appear that all the drawbacks of the conventional system could be overcome.

However, if the door cannot be opened due to a power outage or a malfunction of related equipment, the user will be trapped inside the box, so automatic control has not become a reality.

[Means for solving problems]

In view of the drawbacks of the conventional methods, this invention has been developed to automatically open the door, and in the event of an accident, it can be easily opened manually, and the door is equipped with an automatic hinge that always closes the door. In a door opening/closing mechanism in which a vertically movable operating rod 7 is connected with a fixed length cord-like body 4 via a direction changing tool 5,
It is characterized in that a weight 9 that moves up and down by the operation of a motor 10 with a brake is placed on the operating rod 7, and that the weight 9 has a weight that presses down on the operating rod 7 to open the door. It is something.

[Effect]

When the operating rod 7 descends downward, the connected fixed-length string-like body 4 will be pulled in the direction of opening the door 1 by the direction changer 5, while a weight 9 is placed on the operating rod 7, The weight 9 can be moved up and down by a motor 10 with a brake, and has enough weight to lower the operating rod 7 and open the door.

Therefore, if the motor 10 with a brake is operated to lower the weight 9, the weight 9 will be lowered and the operating rod 7, which is under pressure by the weight 9, will also be lowered, allowing the door to be opened.

After opening the door, if the operation of the motor 10 with a brake is stopped and the motor 10 with a brake is rotated in the reverse direction after a certain period of time, the weight 9
The operating rod 7, which has lost its downward pressure, closes due to the action of the auto-hinge of the door 1, causing it to rise.

Also, the operating rod 7 and the weight 9 are unrelated to each other, and the weight 9
Since it is only placed on the operating rod 7, the weight 9 may have stopped at the closed door position or halfway due to an accident, and the brake action of the motor 10 would have made it impossible for the weight 9 to move up and down. However, since the operating rod 7 can be lowered, the door can be opened by manually operating the operating rod 7.

〔Example〕

A pulley 2 is provided inside an auto-hinged door 1 that always closes the public telephone box, and a fixed length string 4 with one end fixed to the inner wall 3 is hung on the pulley 2, and further attached to the inner wall 3. The direction is changed through fixed pulleys 5a and 5b, and the other end that hangs down is tied to an operating rod 7.

The operating rod 7 has two guide columns 8 erected in parallel,
8 with collars 14, 14..., and is slidable in the vertical direction.

Therefore, when the operating rod 7 is in the upper position, the door is closed due to the action of the auto-hinge and the constant length string 4 is loosened, and when the operating rod 7 descends against the auto-hinge, the door 1 is closed. It is pulled open by the constant length string-like body 4.

On the other hand, a weight 9 is attached to the guide columns 8, 8 so as to be movable up and down, and the weight 9 is disposed above the operation rod 7.

The weight 9 has enough weight to open the door against the automatic hinge of the door 1, and the weight 9 connects the tip of the wire 12 of the winch 11, which is rotated forward and backward by a motor 10 with an electromagnetic brake, to a fixed pulley. They are connected via 6.

Therefore, although the operating rod 7 always tries to rise due to the auto-hinge of the door 1, it is prevented from rising by the weight 9 located above, and is lowered by the lowering of the weight 9 and lowered. The vertical movement of the operating rod 7, that is, the opening and closing of the door 1, is controlled by the vertical movement of the weight 9.

Therefore, the door 1 can be opened and closed by rotating the motor 10 with an electromagnetic brake in the forward and reverse directions, and the operating switch 13 of the motor 10 with the electromagnetic brake is disposed inside and outside the public telephone box, and the forward and reverse rotation times can be appropriately set. The door will open and close automatically.

In addition, since the weight 9 is not integrated with the operating rod 7 and is placed on it independently, it is also possible to lower the operating rod 7 manually as in the past, and in this case, the weight 9 and the electromagnetic The motor 10 with a brake is neither affected nor affected.

[Effect of idea]

The present invention is capable of automatically opening and closing the door, making it convenient for people with disabilities, especially those in wheelchairs, to enter and exit public telephones. Even if the door cannot be opened at any time, it can be easily opened manually, thereby avoiding an unexpected situation in which the user is trapped.

Therefore, it is highly effective in solving the safety problem of automatic opening/closing doors of public telephone boxes that are not constantly controlled.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
This figure is a plan view of the same, and FIG. 3 is a sectional view of the same essential parts. Symbols: 1 is a door, 4 is a constant length string, 5 is a direction changer, 7 is an operating rod, 9 is a weight, and 10 is a motor with a brake.

Claims (1)

[Scope of utility model registration request] In a door opening/closing mechanism in which an auto-hinged door 1 that always closes the door and an operating rod 7 that can move up and down are connected by a fixed length string 4 via a direction changer 5, a motor 10 with a brake is connected. Weight 9 that moves up and down when activated
A door opening/closing device characterized in that the weight 9 is placed on the operating rod 7 without any attachment, and the weight 9 has a weight that presses down on the operating rod 7 to open the door.