JPS5917030B2 - elevator door equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator door device that uses the movement of a car door to unlock the door of an opposing landing.

When the elevator installed in the building is not in use, such as when the building is closed at night, the main power is generally cut off by a stop switch installed inside the elevator car, and then the elevator door is closed manually. The elevator will be stopped.

Then, the elevator that is inactive is returned to a state in which it can be operated by manually opening the door and operating a stop switch in the car.

However, in the case of the door opening/closing device described above, the landing door is automatically locked when the door is manually closed, so there is the inconvenience that the door cannot be opened from the landing unless the specified key is used. Ta.

Further, when opening the door from the landing with the key, only the door of the landing can be opened even when the car is not stopped at that landing.

Although the dismantling operation is supposed to be carried out by a specific manager, if the car is not stopped, only the landing door is opened and the manager accidentally enters the elevator hoistway. There is a risk of falling.

Additionally, car doors are generally not equipped with locking devices, so if the car abnormally stops in a position where the landing door and car door do not engage while the car is being raised or lowered or due to a power outage, etc. The door of the car can be opened relatively easily by the passenger inside the car.

For this reason, an accident may occur if a passenger opens the car door while the car is being raised or lowered.

This invention solves the above-mentioned drawbacks, and provides an elevator that locks the door of the car when the car is going up or down or stops abnormally, and unlocks the door of the landing when the car is stopped. The purpose is to provide a door device.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 1.

In the figure, 1 is a car, and 2 and 2' are corner doors, respectively, which are suspended from a rail 4 fixed to a girder 3 of the car 1 by a pulley 6 pivotally supported by a hanging plate 5.

Reference numeral 5a denotes an engaging piece protruding from the hanging plate 5 and placed at the opposite end thereof, 7 a drive unit installed on the girder 3, and 8 a pivot pin 3a provided upright on the girder 3. A drive arm 9 is held and rotated by a drive machine 7. Drive arm 8 is a pin 1.
0, links are each pivotally connected to the car door 2 by pins 11; 12 is a fixed engagement plate fixed to the car door 2 and projects forward and extends vertically; 13 is pivotally supported by the fixed engagement plate 12; When the car doors 2, 2' are fully closed, the movable engagement plate 14 is placed in a tilted position toward the fixed engagement plate 12, and stands upright forward by the rotation of the link 9.
The car door 2' is pivotally supported by a pin 3b erected at the other end.
16 is a connecting link that is pivotally connected to the drive arm 8 and the driven arm 14 and transmits the rotation of the drive arm 8 to the driven arm 14 as a rotation in the opposite direction. The above is a double-swing car door opening/closing device.

Car doors 2 and 2' are indicated by arrows A, respectively. A″j5
Open in the direction of arrows B and B' and close in the direction of force.

Also, 11 is a landing, and i s and i s' are landing doors, which are suspended at their upper parts like car doors 2, etc., on the upper part of the landing 17, and are interlocking devices so that they move in directions opposite to the arrows A and A'. (not shown).

19 is a fixed roller that is pivotally mounted on the car door 2 side of the landing door 18 and is arranged outside the movable engagement plate 13; 20 is a dog-shaped roller that is pivotally supported on a pin 18a that is erected on the landing door 18; The fixed engagement plate 1 is pivotally supported on the side of the car door 2 at the lower part of the arm 21.
A movable roller 22 is arranged on the outside of 2, a hook bar 24 is pivotally supported by a pin 23a fixed to the upper edge of the hanging hand plate 23, extends toward the landing door 18', and has a downward hook 22a.
The arm 210 has both ends pivoted to the arm 21 and the hook bar 22, respectively.
A rod 25 that transmits rotation in the opposite direction to the hook bar 22 is fixed to the landing 17 and has an upward protrusion 25.
26 is an electromagnet device provided above the adjacent part of the three-digit car door 2, 2'; 27 is an electromagnet device having one end pivotally supported by a pin 26a at the bottom of the electromagnet device and extending forward; 27b constitutes a bent part 27a that is sucked into the device 26, and the other end thereof hangs down. 27b is a stopping part formed at the hanging end of the bending part 27a and has a width F. 27c is a stopping part in which both ends of the stopping part 27b are formed. Yaiko, G, each refracted in three digit directions,
H is a normal power supply, 28 is a normal power supply detection relay, and 28a~
28c is a normally open contact, 28d and 28e are normally closed contacts, 29 is a pause switch that is operated when the car 1 is stopped, and 30 is a normally closed electromagnetic relay that is energized when the heel 1 is moving up and down. Lifting detection device consisting of contacts, 31
The fixed roller 19, the movable row 220 and the fixed engagement plate 12,
A switch 32 is an abnormal stop detection device consisting of an electromagnetic relay, which is closed when the heel 1 stops at a position where it cannot engage with the movable engagement plate 13, that is, when it stops abnormally.
A is its normally closed contact, and I and J are emergency power supplies.

Now, assuming that there is no abnormality in the normal power supplies G and H, G-28-
The normal power supply detection relay 28 is energized by the circuit H, contacts 28a to 28c are closed, and contacts 28d and 28e are deenergized.

As a result, emergency power supplies I and J are cut off.

In this state, if the pause switch 29 is not operated and is closed, and the car 1 is not moving up or down, the up/down detection device 30 is closed, and if the stopped position of the car 1 is not an abnormal stop position. Since the abnormal stop detection device 32 is deenergized, the contact 32a is closed.

Therefore, G28a-32a-28cm26-29
The electromagnetic device 26 is energized by the circuit 3O-28b-H.

As a result, the stopper 27 is attracted by the electromagnetic device 26 and held in the position shown by the solid line in FIG. 5, that is, in the retracted position.

On the other hand, when the car doors 2 and 2' and the landing door 18 and 18' are closed, the fixed engagement plate 12 and the movable roller 2
0, the distance between the movable engagement plate 13 and the fixed roller 19 is 0.
, 0'.

Further, the hanging plates 5 of the car doors 2, 2' are opposed to each other with a gap between them.

Therefore, when the car 1 passes through the landing 11, the fixed engagement plate 12 and the like do not come into contact with the movable rollers 20 and the like in this state.

When the car 1 stops at the normal position with respect to the landing 17 and the car door 2 etc. is opened, the drive unit 7 is driven and the drive arm 8 moves counterclockwise around the pin 3a in FIG. The car door 2 is rotated via the link 9, and the car door 2' is moved in the directions of arrows A and A' by the driven arm 14 and the like.

At this time, when the fixed engagement plate 12 moves between the intervals O,
The fixed engagement plate 12 is in contact with the movable roller 20 and further moves at a distance E.
The engagement roller 20 is pushed during the movement.

As a result of this operation, the arm 21 rotates clockwise around the pin 18a in FIG. The engagement with the protrusion 25a of the insulator 25 is disengaged.

Almost at the same time, the landing doors 18 and 18', which had been fully closed and in contact with each other, begin to move in the directions of arrows A and A', respectively.

Further, when the car door 2 moves a certain distance in the direction A from the fully closed position, the movable engagement plate 13 stands upright in the position shown by the chain line in FIG. The engagement between door 2 and landing door 2 is completed.

Next, when the car door 2 etc. are closed, the operation is completely opposite to the above.

The corner doors 2, etc. move in the directions of arrows B and B', and the landing doors 18 and 18' first collide with each other to block the landing 17, and then the car doors 2 and 2' move in the direction of arrow B. , B' direction, and by moving a distance E, the hook bar 22 engages the engaging member 25 via the arm 21, and the locking of the landing doors is and is' is completed.

Further, due to the movement of the distance, the corner doors 2, 2' collide with each other and become fully closed, and at this time, the hanging plates 5 face each other with a distance between them.

Then, the car 1 stops at the normal position and the car door 2.2'
When the pause switch 29 is operated and opened with the door open, the electromagnet device 26 is deenergized.

As a result, the stopper 27 rotates around the pin 26a under its own weight and moves forward to the position shown by the chain line in FIG. .

The width F of the stop portion 27b is the width of the landing door i s , i s'
The distance between the hanging hand plates 5 is also set to be wide when the cage door 2 is closed and collides with each other, that is, when the fixed engagement plate 12 of the car door 2 is in the position shown by the chain line in FIG. .

For this reason, when the landing door 18, etc. is manually closed, the hanging hand plate 5 hits the stopper 27b from both sides, and the car door 2,
2' stops without fully closing.

As a result, even if the landing doors i s and i s' are nearly fully closed, the hook bar 22 and the engaging element 25 are kept unlocked from each other.

Therefore, when the elevator is returned to operable next time, it is easy to access the landing doors i s and i s' from the landing 17 and the car doors 2 and 2' via these, without using a predetermined key. It is possible to open it and enter inside.

Therefore, it is possible to prevent accidents caused by carelessly using a key to open the door of the landing 17 where the car 1 is not stopped.

In addition, the width F of the restraining portion 27b is set to the fixed engagement plate 1 of the car door 2.
2 is set equal to the distance between the corresponding hanging plates 5 when they are in the position shown by the chain line in FIG.
, 18' are not locked even if they are fully closed.

As a result, if the elevator is stopped and the floor of landing 17 is damaged, even if a fire breaks out, the landing door is
, i s' Since there is no gap between the two, it is possible to prevent the spread of fire from this location.

Furthermore, when the car 1 is being raised or lowered, the car doors 2 and 2' are closed and the lift detection device 30 is open, so that the electromagnet device 26 is deenergized.

Therefore, the stopper 27 rotates and moves forward to the position shown by the chain line in FIG.

As a result, the engaging member 27c engages with both engaging pieces 5a, so that the car doors 2, 2' are locked.

Therefore, it is possible to prevent an accident caused by a passenger in the heel 1 inadvertently opening the car doors 2, 2' while the car 1 is being raised or lowered.

Further, when the heel 1 abnormally stops during elevation, the elevation detection device 30 is closed, but in this case, the switch 31 is closed, so the abnormal stop detection device 32 is activated by the circuit G-31-32-H. is energized, and the contact 32a is opened.

As a result, the electromagnetic device 26 is deenergized, so that the stopper 2
7 moves forward to the L position and the car doors 2, 2' are locked.

Therefore, it is possible to prevent an accident caused by a passenger inside the car opening the car doors 2, 2' and escaping out of the car when the car heel 1 stops abnormally.

In this way, one set of restraints has the function of preventing the locking of the landing door 18° 18' when the car 1 is at rest, and the function of locking the car doors 2, 2' when the car 1 is going up or down or stops abnormally. body 27,
Since it can be achieved by the electromagnetic device 26, the above-mentioned functions can be obtained at low manufacturing cost.

In addition, as an additional effect obtained in this embodiment, when the normal power supplies G and H fail, the emergency power supplies I and J
is connected, so that the same effect as normal power supplies G and H can be obtained.

Furthermore, although the embodiments shown in FIGS. 1 and 1 have been described with respect to a double-sliding door device, it is clear that this can be easily applied to a single-sliding door device to obtain the same effect. be.

As explained above, the present invention includes an engagement mechanism in which a landing door and a car door are engaged by the initial opening operation of the car door;
and a locking device that locks or unlocks the landing door in conjunction with the engagement operation of the engagement mechanism, moves forward through the operation of the car pause switch and immediately closes the car door. A stopper is provided that prevents the door from closing at a certain position, stops the operation of the engagement mechanism, and makes the locking device unlockable. This prevents the car door from opening by engaging the car door when the car door is fully closed.

This makes it possible to open the door of an elevator when the car is stopped without using a key, and also allows passengers in the car to stop opening the elevator door when the car is going up or down or when it stops abnormally. A device that can be manufactured at low cost prevents accidents caused by opening the elevator door inside the car using a key, or by opening the car door by a passenger inside the car when the car is going up or down or when it stops abnormally. It is something to do.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of an elevator system, FIG. 2 is a car side compartment view of FIG. 1 showing an embodiment of an elevator door device according to the present invention, and FIG. 3 is a landing corresponding to FIG. 4 is an enlarged view of part ■ in FIG. 1, FIG. 5 is a sectional view taken along the v-v line in FIG. 2 is a main part electric circuit diagram of FIG. 2. FIG. 2.2'...Car door, 18,18'...
...Landing door, 27...Restriction body, 29...
... Pause switch, 30 ... Elevation detection device, 3
2... Abnormal stop detection device 6 Note that the same parts in the figures are designated by the same reference numerals.

Claims (1)

[Claims] 1. An electrically driven car door installed at the corner, a landing door that is installed at the landing and faces the corner door when the car arrives at the landing, and the corner door and the landing door. When the two doors are in the fully closed position, the two are disengaged, and when the door is in the initial door open position close to the fully closed position, the door is disengaged. An engagement mechanism that engages the closed landing door, and a locking mechanism provided on the landing door that locks the landing door when both are fully closed. A device provided with a locking device that is unlocked by an engaging operation of a coupling mechanism, a pause switch that is manually operated when stopping the corner, a lifting detection device that detects lifting and lowering movements of the corner, and an abnormal stop detection device that operates when the heel stops abnormally; and an electromagnetic mechanism provided on the heel, which is configured to be able to move forward and backward, is normally held in a backward position, and is activated through the operation of the stop switch. When the door of the car is open, the car moves forward and is displaced into the movement path of the door, and stops the door of the car from closing just before the fully closed position, and the lift detection device and the abnormal stop detection device An elevator door device, characterized in that it is provided with a stopper that moves forward through the operation of any one of the devices and engages with the fully closed door to prevent the door from opening. .