JPH09309680A - Door opener blocking device for dam waiters - Google Patents

Abstract

(57) An object of the present invention is to provide a door opening prevention device for a dam waiter, which can effectively prevent the door from being opened easily during movement of the dam waiter car. A door guide is provided on the door member. The door guide 21 is provided with a guide roller 22 that moves on the vertical frame 11a of the door frame 11 at its tip. The guide roller 22 is biased toward the door frame 11 by the biasing means. As a result, movement of the door members 12 and 13 with respect to the door frame 11 is suppressed. When closed, the recess 26 ensures that the closed state is maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door of a dam waiter installed in a dam waiter car to open and close the entrance of the dam waiter car, and more particularly, to open and close the door member by utilizing a weight balance with a counterweight. Regarding things.

[0002]

2. Description of the Related Art In a general dam waiter (elevator for carrying luggage), a pair of door members are connected to each other through a door-hanging rope wound around a pulley, and the weight of the door members is balanced to make the door members lighter. It realizes opening and closing operation. In a dam weighter using such a door hanging rope, when an opening operation is applied to one door member, the opening operation is transmitted to the other door member as movement of the door hanging rope around the pulley, and as a result, the other The door member will also move in the opening direction.

[0003]

In the dam waiter, the movement of the dam waiter car is executed after confirming the completely closed state of the door member by the detection switch. However, when such a detection switch is used, when the detection switch detects the open state of the door member during the movement of the dam waiter car, the movement of the dam waiter car stops. If the dam waiter car stops at an intermediate position between the stop floors, there arises a disadvantage that a general user cannot easily recover.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a door opening prevention device for a dam waiter, which can effectively prevent the door from being opened easily during movement of the dam waiter car. To aim.

[0005]

To achieve the above object, according to the first aspect of the invention, a door frame installed at the entrance of a dam waiter car and a door frame that moves along the door frame to open and close the entrance of the dam waiter car are opened and closed. A door member, a counterweight that is connected to the door member through a rope for hanging the door, and a pulley that is attached to the door frame and around which the rope for hanging the door is wound, and the rope for hanging the door is moved around the pulley. In the door of the dam waiter in which the door member is opened and closed by using the weight balance with the counterweight, the door member is provided with a contact member that moves on the door frame, and the contact member is provided. Provided is a door opening prevention device for a dam waiter, which is provided with a door guide for suppressing movement of a door member with respect to the door frame by urging the door frame toward the door frame.

According to a second aspect of the present invention, in the door opening prevention device for a dam waiter according to the first aspect of the present invention, the counterweight is an auxiliary door member that cooperates with the door member to open and close the entrance of the dam waiter car. It is characterized by being.

Further, according to the third invention, in the door opener for a dam waiter according to the first or second invention,
The door frame may be provided with a recess for receiving the contact member at the closed position of the door member.

Further, according to the fourth aspect of the invention, in the door opening prevention device for a dam waiter according to the third aspect of the invention, when the contact member is received in the recess, the contact member is brought into contact with the contact member to close the door member. Is provided with an open detection switch for confirming

Furthermore, in the door opening prevention device for a dam waiter according to any one of the first to fourth aspects of the invention, the door frame is formed with an inclination that separates from the door member as the door member moves in the opening direction. It is characterized by

Furthermore, in the door opening prevention device for a dam waiter according to any one of the first to fourth aspects of the invention, the door frame is formed with an inclination that separates from the door member as the door member moves in the closing direction. It is characterized by

Furthermore, according to the seventh aspect of the invention, a door frame installed at the entrance of the dam waiter car, a pulley attached to the door frame and around which a door connecting rope is wound, and a door connecting rope are interposed between the door frame and the pulley. First and second door members that are connected and cooperate with each other to open and close the entrance of the dam waiter car. When the opening operation is applied to the first door member, the door connecting rope moves around the pulley, In a door of a dam waiter that induces an opening operation of a door member, at least one of the first and second door members is provided with a contact member that moves on the door frame at a tip, and the contact member is directed toward the door frame. Provided is a door opening prevention device for a dam waiter, which is provided with a door guide that suppresses movement of a door member with respect to a door frame by being urged.

[0012]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a door device 10 according to a first embodiment of the present invention, which is attached to an inlet (not shown) of a dam waiter car and moves up and down together with the dam waiter car.
In this door device 10, the door frame 1 is installed at the entrance of the dam waiter basket.
1 is installed. The first and second door members 12, 13 are
It moves up and down along the vertical frame 11a of the door frame 11 and cooperates with each other to open and close the entrance of the dam waiter car.

The first and second door members 12 and 13 are connected to each other by a pair of door suspension (door connection) ropes 14. The rope 14 for hanging each door is the ceiling frame 11 of the door frame 11.
It is wound around a pulley 15 rotatably attached to b. Therefore, when the opening operation, that is, the raising operation is applied to the first door member 12, the rope 14 for hanging the door is rotated around the pulley 15.
Moves, and the opening operation, that is, the lowering operation of the second door member 13 is induced. At this time, for example, if the second door member 13 is regarded as an auxiliary door member, that is, a counterweight, it is possible to realize a smooth opening / closing operation of the first door member 12 based on the weight balance with the counterweight. Become. The closed state of the first and second door members 12 and 13 is detected by the opening detection switch 16.

Horizontal ends of the first and second door members 12 and 13 are guided to the door frame 11 by guide means 17.
Referring also to FIG. 2, this guide means 17 is attached to the groove-shaped guide path 18 formed in the vertical frame 11 a of the door frame 11 and the first and second door members 12 and 13, and the guide path 18 is provided. And a door shoe 19 that is received in the. Each door shoe 1
9 moves up and down along the guide path 18.

A door opening prevention device 20 is attached to the first door member 12. The door opening prevention device 20 includes a pair of left and right door guides 21. As shown in FIG. 3, each door guide 21 includes a guide roller 22 as a contact member that moves on the door frame 11 along the guide path 18. The guide roller 22 is rotatably supported by a roller support 23. The roller support member 23 is provided with screws or the like for the first door member 1
2 is slidably inserted into a support cylinder 24 that is fixedly supported by
Winding spring 2 as biasing means provided in the support cylinder 24
5 urges the door frame 11 side. The guide roller 22 is pressed against the door frame 11 by the urging force of the winding spring 25, and as a result, the movement of the first door member 12 with respect to the door frame 11 is suppressed. The movement of the first door member 12 depends on the movement of the second door member 13.
Therefore, even if the door opening prevention device 20 is provided only on the first door member 12, the movements of both the first and second door members 12 and 13 can be suppressed.

Moreover, the guide path 18 of the door frame 11 has the first
Since the concave portion 26 for receiving the guide roller 22 in the closed position of the second door members 12 and 13 is provided,
The guide roller 22 surely fits into the recess 26 by the biasing force against the guide roller 22, and as a result, the first and second door members 12 and 13 are surely maintained in the closed state even while the dam waiter car is moving. Is secured.

The operation of this embodiment will be described with reference to FIG. First and second door members 12, 1 shown in FIG.
In the closed state of No. 3, since the guide roller 22 is biased against the door frame 11 with the guide roller 22 fitted in the concave portion 26, it depends on the magnitude of the biasing force of the winding spring 25 of the door opening prevention device 20. The first and second door members 12, 1
The closed state of 3 is reliably retained. This closed state is detected by the open detection switch 16, and the vertical movement of the dam waiter car is authorized. Door opening prevention device 20 is the first
Also, since the closed state of the second door members 12 and 13 is reliably maintained, the first door member 12 and the first door member 13 can be maintained even when the dam waiter car is moving.
Also, the second door members 12 and 13 are never opened.

When opening the first and second door members 12 and 13, for example, an opening operation, that is, a lifting force is applied to the first door member 12 through a handle (not shown) attached to the first door member 12. With this rising force, the guide roller 22
When the guide roller 2 is removed from the recess 26,
While 2 rotates, it moves on the door frame 11 along the guide path 18, and a smooth opening operation is realized. First door member 12
Is released to the second door member 13 through the movement of the door hanging rope 14 around the pulley 15, and as a result, the second
The door member 13 descends and executes the opening operation. The opening operation is performed lightly due to the weight balance of the first and second door members 12 and 13. When the first door member 12 is moved in the closing direction, the second door member 13 is also moved in the closing direction, and as a result,
Both can be brought to a closed state. When the guide roller 22 finally enters the recess 26 (see FIG. 1), the closed state of the first and second door members 12 and 13 is maintained.

FIG. 5 shows a door device 30 according to the second embodiment of the present invention. In the second embodiment, a weight 31 is attached to the upper first door member 12, and the weight of the weight 31 is used to provide a door opening prevention device 32 that holds the first door member 12 in the lower closed position. Is characterized by. The second door member 13 rises in conjunction with the lowering of the first door member 12, and as a result, the first and second door members 12 and 13 are held in a closed state in which they are in contact with each other.

In this door opening prevention device 32, of the two pairs of door shoes that are normally provided in the up and down direction of the dam waiter car, the upper pair of door shoes is replaced with the above-mentioned door guide 21. By the action of the door guide 21, the movement of both the first and second door members 12 and 13 can be suppressed. In addition, since the guide path 18 of the door frame 11 is provided with the concave portion 33 that receives the guide roller 22 at the open position of the first and second door members 12 and 13, the guide roller 22 is biased by the guide roller 22. Fits securely into the recess 33, and as a result, the open state of the first and second door members 12 and 13 is reliably maintained regardless of the weight of the weight 31. Therefore, it becomes possible to reliably carry out loading work and unloading work for the dam waiter. Here, the urging force of the door guide 21 is set to a state in which the first and second door members 12 and 13 can be reliably held in the open state in view of the weight difference between the first and second door members 12 and 13. Is set.

In the second embodiment, the above-mentioned first
The same components as those in the embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 6 shows a door device 40 according to the third embodiment of the present invention. The third embodiment is characterized in that a receiving hole 41 is provided in place of the recess 26 of the first embodiment. According to this configuration, since it is sufficient to make a hole in the vertical frame 11a of the door frame 11, the door opening prevention device according to the present invention can be easily applied without replacing the door frame 11. The same components as those in the first and second embodiments described above are designated by the same reference numerals, and detailed description thereof will be omitted.

Further, in the third embodiment, as shown in FIG. 7, when the guide roller 22 of the door guide 21 is received in the receiving hole 41, the guide roller 22 is brought into contact with the first and second guide rollers 22. An opening detection switch 42 capable of confirming the closed position of the door members 12 and 13 may be provided. In the opening detection switch 42, the operation piece 42 of the opening detection switch 42 is contacted by the contact of the guide roller 22.
a swings, and this swing sends a door closing signal. After confirming receipt of this door closing signal, a control circuit (not shown) can raise and lower the dam waiter car. With this configuration, it is possible to accurately detect that the first and second door members 12 and 13 are closed.

FIG. 8 shows a door device 50 according to the fourth embodiment of the present invention. In the fourth embodiment, the first and second door members 12, 13 are separated from the first and second door members 12, 13 as the first and second door members 12, 13 move in the closing direction, and the first and second inclined surfaces 51, 52 are the door frames. 53 is formed. That is, the vertical frame 53a of the door frame 53 widens the interval between the vertical frames 53a facing each other as it goes upward from the vertical center position to form the first inclined surfaces 51 facing each other, while it goes downward. Opposing vertical frame 5
The second inclined surface 52 that widens the interval between the 3a and faces each other
To form A recess 54 is formed at the boundary between the first and second inclined surfaces 51 and 52. At the closed position of the first and second door members 12 and 13, the door members 12 and 1 are provided in the recess 54.
The lower door guide 21 of the first door member 12 and the upper door guide 21 of the second door member 13 are received among the pair of upper and lower door guides 21. The same components as those in the first to third embodiments described above are designated by the same reference numerals, and detailed description thereof will be omitted.

According to this structure, the biasing force of the door guide 21 assists the opening operation of the first and second door members 12 and 13. As a result, an easy opening operation can be realized.
Further, as shown in FIG. 9, the first and second inclined surfaces 5
The inclination directions of 1 and 52 may be exchanged. By this replacement, the closing operation of the first and second door members 12 and 13 can be assisted, and as a result, an easy opening operation can be realized. Even in this case, the closed state of the first and second door members 12 and 13 is reliably held by the guide roller 22 of the door guide 21 being received in the recess 54.

[0027]

As described above, according to the present invention, according to the first or second invention, the contact member strongly contacts the door frame by utilizing the biasing force of the door guide. The movement of the member is suppressed, and as a result, the door of the dam waiter can be maintained in the closed state with high reliability.

Further, according to the third aspect of the present invention, the contact member is fitted into the concave portion, so that the closed state of the door member is more surely maintained.

Further, according to the fourth aspect of the invention, the open detection switch can reliably detect the closed state or open state of the door member.

Furthermore, according to the fifth or sixth aspect of the invention, it is possible to easily realize the movement of the door member in the opening direction or the closing direction by utilizing the biasing force of the door guide. .

Furthermore, according to the seventh aspect, since the contact member strongly contacts the door frame by utilizing the biasing force of the door guide, the movement of the first and second door members with respect to the door frame is suppressed, As a result, the door of the dam waiter can be maintained in the closed state with high reliability.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a door device to which a door opening prevention device according to a first embodiment of the present invention is applied.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a cross-sectional view taken along line 3-3 in FIG.

FIG. 4 is a diagram showing an operating state of the door device.

FIG. 5 is an overall configuration diagram of a door device to which a door opening prevention device according to a second embodiment is applied.

FIG. 6 is an overall configuration diagram of a door device to which a door opening prevention device according to a third embodiment is applied.

FIG. 7 is an overall configuration diagram of a door device to which a door opening prevention device according to a third embodiment is applied.

FIG. 8 is a schematic diagram showing an overall configuration of a door device to which a door opening prevention device according to a fourth embodiment is applied.

FIG. 9 is a schematic diagram showing an overall configuration of a door device according to a modification of the fourth embodiment.

[Explanation of symbols]

11 door frame, 12 first door member as door member, 13
Second door member as counterweight (auxiliary door member), 14 Door hanging rope (door connecting rope), 15 Pulley, 21 Door guide, 22 Guide roller as contact member, 26
Recesses, 33 Recesses, 41 Receiving holes instead of recesses, 4
2 Open detection switch, 51, 52 Inclined surface as inclination.

Claims (7)

[Claims] 1. A door frame installed at the entrance of a dam waiter car, a door member that moves along the door frame to open and close the entrance of the dam waiter car, and a balance connected to this door member through a rope for hanging a door. It is equipped with a weight and a pulley attached to the door frame and around which a rope for hanging the door is wound. By moving the rope for hanging the door around the pulley, the weight of the counterweight is used to open and close the door member. In the door of the dam waiter to be operated, the door member is provided with a contact member that moves on the door frame at the tip, and the movement of the door member with respect to the door frame is suppressed by urging the contact member toward the door frame. A door opening prevention device for a dam waiter, which is provided with a door guide. 2. The door opening prevention device for a dam waiter according to claim 1, wherein the counterweight is an auxiliary door member that cooperates with the door member to open and close the entrance of the dam waiter car. Door opener blocking device for dam waiters. 3. The dam waiter door opening prevention device according to claim 1, wherein the door frame is provided with a recess for receiving the contact member at a closed position of the door member. Door opening prevention device. 4. The door opening prevention device for a dam waiter according to claim 3, further comprising: an opening detection switch that contacts the contact member when the contact member is received in the recess and confirms a closed position of the door member. A door opening prevention device for a dam waiter characterized by being provided. 5. The door opening prevention device for a dam waiter according to claim 1, wherein the door frame is formed with an inclination that separates from the door member as the door member moves in the opening direction. A door opening prevention device for dam waiters. 6. The door opening prevention device for a dam waiter according to claim 1, wherein the door frame is formed with an inclination that separates from the door member as the door member moves in the closing direction. A door opening prevention device for dam waiters. 7. A door frame installed at the entrance of a dam waiter car, a pulley attached to the door frame and around which a door connecting rope is wound, and a pulley connected to each other through the door connecting rope and cooperating with each other. A first door member and a second door member for opening and closing the entrance of the dam waiter car are provided, and when the opening operation is applied to the first door member, the door connecting rope moves around the pulley, and the second door member moves.
In a door of a dam waiter for inducing an opening operation of a door member, at least one of the first and second door members is provided with a contact member that moves on the door frame at its tip, and the contact member is directed toward the door frame. A door opening prevention device for a dam waiter, wherein a door guide that suppresses movement of a door member with respect to a door frame by being biased is provided.