JPS5932390B2 - Elevator door engagement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator door engagement device.

Generally, the car door that opens and closes the entrance/exit of an elevator is driven to open and close by a drive machine provided on the car side, and the landing door is driven to open and close by a locking device provided on the corner door and the landing door. It is designed to be driven to open and close together with the car door.

First, a conventional elevator door locking device of this type will be explained with reference to FIGS. 1 to 3.

In these figures 1 to 3, 1 is a hanger case appropriately fixed to the surrounding wall 3 of the entrance/exit 2 of the landing, and 4 is a hanger 6 suspended on a rail 5 fixed to the hanger case 1. a landing door that opens and closes the entrance/exit 2;
Reference numeral 7 denotes a locking device, which has a latch 7a whose central portion is pivoted to the hanger 6. One end of this latch 7a is engaged with a latch 7b with a gap G1 maintained; The short-circuit contact 7c is in contact with the contact 7d.

Reference numeral 8 denotes an engagement mechanism provided on the door 4 of the landing, which has one end connected to the other end of the latch 7a with a connecting rod 8a, and a movable engagement roller 8c pivotally supported at the other end. arm 8
b, and this arm 8b is biased clockwise by a spring 8d, and a stopper 8e.

8f restricts the movable range, and the movable engagement roller 8c is opposed to a fixed engagement roller 8g which is separately pivoted to the door 4 of the landing.

Further, 9 is a closer which always urges the landing door 4 in the closing direction via a rope 9a, and 10 is an entrance/exit 1 at the heel 11.
A girder 13 is fixed above the girder 10, a car door 13 is suspended from a hanger 15 rolling on a rail 14 fixed to the girder 10, and opens and closes the entrance/exit 12;
17 is a drive arm provided in the link 1.
7a.

It consists of 17b, 17c, and 17d, and link 17a
is attached to the drive unit 16, the link 17c is pivotally supported by the pivot point 17e, and the link 17b connects the link 17a and one end of the link 17c.
Connect the link 17d pivoted to the other end of 7c to the corner door 1.
It is connected to the vane 18 provided at 3.

Then, the vane 18 is inserted between the engagement rollers 8c and 8g of the engagement mechanism 8, and the vane 18 is inserted between the engagement rollers 8c and 8g of the engagement mechanism 8, so as not to interfere with the upward and downward movement of the heel 11.
Therefore, in the above configuration, when the car 11 arrives at the destination entrance/exit 2 of the landing, the driver 16 is driven 1 by a door opening command from the control panel (not shown). Link 17a begins to rotate clockwise.

As a result of this operation, the link 17c is swung counterclockwise around the pivot point 17e, the car door 13 begins to open, the vane 18 comes into contact with the engagement roller 8c, and the car door 13 further opens. and the engagement roller 8c by the vane 18.
is pressed, and the connecting rod 8a is pulled downward until the arm 8b contacts the stopper 8f, and the latch 7a is rotated clockwise to release it from the latch 7b, thereby opening the door 4 of the car. The opening operation is performed together with the door 13.

Although a detailed explanation will be omitted here, the vane 18 is caused by the swinging movement of the link 17d caused by the opening operation of the car door 13.
While the car door 13 is opened by approximately 100 mm, the car door 13 is expanded by pushing the retaining rollers 8c and 8g apart until the arm 8b contacts the stopper 8f, and the landing door 4 and the car door 13 are integrated. It is operated to open.

Furthermore, when passengers have finished entering and exiting, the landing door 4 and the car door 13 are closed by an operation opposite to the opening operation,
It is electrically confirmed that the landing door 4 is fully closed by contact between the shorting contact 7c and the contact 7d, and the car 11 is directed to the next destination, the landing entrance.

However, in the conventional elevator door securing device having the above-mentioned structure, firstly, the width expansion mechanism of the vane 18 is complicated and manufacturing cost is high, and the width expansion dimension cannot be increased mechanically, so each gap G2, G3゜G4 could not be made larger,
For this reason, there is a risk that the vanes 18 and the engagement mechanism 8 will collide and be damaged due to vibrations caused by the running of the heel 11 or by the movement of passengers inside the car 11. 13 and within a short range, many constraints are added to the selection of the length and arrangement of the drive arm 17 and the position of the vane 18.
It was impossible to design effectively.

Then, from the fully closed position of the car door 13, the vane 18
Since the landing door 4 and the car door 13 are not completely integrated, the range until the widening operation is completed is limited to the width of each door 4.
, 13 cannot be opened and closed smoothly, and especially when opened in the middle of the closing operation, a lot of noise is generated, causing problems. When closed, there is a gap G3 between the vane foot and the retaining rollers 8c and 8g. Because of the G4, when a strong wind hits the landing door 4, the closer 9 alone will not be able to maintain the closed position, and the car 11 will not be able to move.
When a foreign object such as garbage is caught in the tip of the landing door 4, the gap G1 between the latch 7a and the latch 7b disappears, making it impossible to unlock the door, and similarly, the latch 11 cannot be moved. It had the following drawbacks.

In order to improve these conventional drawbacks, the present invention provides a vane provided on the furnace side of the car as a single unit structure that does not require widening operation, and an engagement mechanism on the furnace side of the landing that is associated with this vane. The linked operation is performed by the magnetic attraction effect caused by the excitation of the electromagnet.

Embodiments of the securing device according to the present invention will be described in detail below with reference to FIGS. 4 to 8.

4 to 7 show one embodiment of the present invention, and in each of these figures, the same reference numerals as in FIGS. 1 to 3 indicate the same or corresponding parts.

In the embodiment shown in FIGS. 4 to 7, the movable engagement roller 8c is attached to the other end of the arm 8b of the engagement mechanism 8.
Attach an unlocking element 8h that is made of magnetic material instead of the
In addition, the fixed side engaging roller 8g is removed, and retaining pieces 19a and 19b are raised on both sides of the landing door 4 below the unlocking element 8h. Similarly to the eggplant, an engaging plate 19 made of magnetic material is fixed,
Of these two engaging pieces 19at19b, the surface of the engaging piece 19b on the side in the door opening direction is opened by a distance G5 that is a dimension necessary for unlocking the locking device 7, with respect to the surface of the unlocking element 8h. The direction is to move backwards.

Further, the link 17d of the drive arm 17 is directly connected and pivoted to the car door 13, and a vane 720 is fixed on the car door 13 instead of the vane 18 that conventionally connected this link 17d. .

The vane 20 is made of a magnetic material and consists of an engaging part 20a having leg parts 20b, 20b at both ends in the vertical direction, and each leg part 20b, 20b has an excitation coil 20,
c, 20c has been replaced, and its connection line 20c+
, 20ct are connected to a control device (not shown) along each link of the drive arm 17, and the excitation coil 2
In series with the circuits 0c and 20c, a contact 21 is inserted that closes the circuit when the door is commanded to open, and opens the circuit when the landing door 4 is fully opened.

Note that each gap G3 between each engagement piece 19at19b of the engagement plate 19 and the engagement portion 20a of the vane 20. G4 is G
3>G4, and the gap G5 between the unlocking element 8h and the engaging piece 19b and the gap G6 between the unlocking element 8h and the engaging part 20a are G5>G6, G5+G6-
The shapes and dimensions of each part are set so as to have a G4 relationship.

Therefore, in the configuration of the embodiment of FIGS. 4 to 7, now,
When the car 11 arrives at the landing entrance 2 of the destination floor, a door opening command from the control panel closes the contacts 21, energizes the excitation coils 20c and 20c of the vane 20, and causes the engaging portion 20a to be magnetized. A suction force is created, and on the other hand, the drive 16 is activated and the drive arm 17 begins to operate.

At this time, the unlocking element 8 of the engagement mechanism 8 arranged on the door 4 side of the landing
h and each engagement piece 19a of the engagement plate 19.

19b and the engaging portion 20a of the vane 20 disposed on the side of the car door 13 are located at the positions shown in FIG. Therefore, due to the magnetic attraction force of the engaging portion 20a, the unlocking element 8h is first
begins to be sucked toward the engaging portion 20a, but since the arm 8b is restricted by the stopper 8e, the entire landing door 4 is once sucked in the closing direction.

Subsequently, when the car door 13 begins to open as described above with the operation of the drive arm 17, the engaging portion 2 of the vane 20 opens.
0a first touches the unlocking element 8h, then this unlocking element 8h
While rotating counterclockwise, the locking element 8h is then brought into contact with the engaging piece 19b of the engaging plate 19, and these three parts are attracted to each other by the mutual magnetic attraction force and are integrated, and at this time the unlocking element 8h ,
Furthermore, since the locking device 7 is unlocked by the differential between the locking mechanism 8 and the engagement plate 19, in other words, the door 4 of the landing, these doors 4 and 13 are subsequently operated in unison and are fully opened. It comes to that.

Also, after passengers have finished entering and exiting, the car door 1
3 starts the closing operation, at this time also the excitation coil 2
Since 0c and 20c remain in the excited state, the unlocking element 8a, the engaging piece 19b, and the engaging part 20a are integrated into one body by the mutual attraction force, and the locking element 8a, the engaging piece 19b, and the engaging part 20a are integrated into one body. The door 4 is also closed integrally with the car door 13 by this suction force and the pulling force of the closer 9.

In this way, when the landing door 4 first reaches the fully closed position, the contact 21 is opened and the exciting coils 20c, 20c
is demagnetized, the mutual attraction is released, and then only the car door 13 continues to close by an amount corresponding to the gap G4, and the locking device 7 is locked in the section corresponding to the gap G5. , the door 13 of this car is also fully closed.

Furthermore, FIG. 8 shows that the above-mentioned configuration is applied to a case where it is necessary to set the distance between the landing threshold 22 and the car threshold 23 to the minimum, such as an elevator for the handicapped that allows a wheelchair to pass through without any hindrance. In such a case, each component on the landing side and the car side is installed so as to fit within the opposing edges of the sills 22 and 23, respectively. 2. Try to keep the distance between them to a minimum. In this embodiment, the connection position between the landing side and car side joint components can be set by protruding the vane 20 at the position where the car is stopped, as shown by the chain line in the figure.

In other words, such a configuration in which the vane 20 can appear and disappear freely is as follows.
Because the vane 20 does not have a navigation mechanism like the conventional one,
This is the first time it has become possible.

Furthermore, in the embodiment described above, a magnetic cushioning material, such as an iron powder rubber sheet, is appropriately interposed on the contact surface between the unlocking element 8h and the locking piece 19b, which are excited and attracted, and the engaging part 20a. By doing so, the contact noise during adsorption can be significantly reduced without interfering with the magnetic attraction force.

In the above embodiment, the excitation coils 20c and 20 are arranged on the engagement part 20a side of the vane 20, but on the contrary, the excitation coils 20c and 20 are arranged on the engagement part 19b side of the engagement mechanism 8 and the unlocking element 8h of the engagement mechanism 8. It goes without saying that the same operation can be achieved even if an excitation coil is placed in the area.

As detailed above, according to the present invention, the interlocking operation between the car door and the landing door is performed between the vane provided on one side of the car and the unlocker and locking piece on one side of the landing. Since the opening/closing operation of the door is performed by excitation and adsorption coupling, the vane can be used as a single unit structure that does not require a widening operation, and a complicated mechanism can be omitted. This eliminates the need to link it to the drive arm, which is the opening/closing mechanism of the car door, and provides the advantage of being able to set the placement position completely freely, and also does not take into account the width dimension of the vane, unlike conventional methods. In order to
This prevents damage and malfunctions caused by collisions between the vanes and the engagement mechanism caused by the shaking of the car.

Furthermore, during opening/closing operations, the range in which the car door and landing door are not integrated is only the differential range of the unlocker, which is where the car door begins to open, and the landing door is fully opened. Since it is always integrated with the car door during each full opening operation, the opening and closing operations can be performed very smoothly and reliably, even when a strong wind is hitting the landing door. The traction force of the closer and the closing force of the car door ensure that the car door is fully closed, and the necessary clearance for the locking device can be ensured, preventing the car from being unable to run. When the door is opened, the door is first pulled in the door closing direction and then opened, which prevents accidents in which the locking device cannot be unlocked.Furthermore, because the overall structure is simple, it can be easily and inexpensively implemented. It has features such as:

[Brief explanation of drawings]

1 to 3 show a conventional elevator door engagement device, FIG. 1 is a front view showing the main part configuration on the landing side, and FIG.
The figure is a front view showing the configuration of the main parts on the car side, FIG. 3 is a cross-sectional view of the main parts showing the engaged state of the above-mentioned engagement device, and FIGS. 4 to 8 are the elevator doors according to the present invention. Different embodiments of the engagement device are shown, FIG. 4 is a front view of the main part of the landing side engagement device according to one embodiment, FIG. 5 is a front view of the main part of the same car side engagement device, and FIG. 7 is a cross-sectional view of the main parts showing the engaged state of the engaging device as above, FIG. 7 is a wiring diagram showing the excitation circuit as above, and FIG.
The figure is a sectional view of a main part showing the correspondence relationship of an engagement device according to another embodiment. 2... Entrance/exit of the landing, 4... Door of the landing, 7... Locking device, 7a... Latch,
7b... Latch, 7C... Short circuit contact, 7
d...Contact, 8...Engagement mechanism,
8a...Connecting rod, 8b...Arm, 8d...
...Spring, 8e...Stopper, 8g...
...Unlocker, 9...Closer, 11...
... Cart, 12 ... Cart entrance, 13 ...
...Car door, 16...Driver, 17...
...Drive arm, 19...Engagement plate, 19a, 1
9b...Engagement piece, 20...Vane, 2
0a...Engaging part, 20b20b...Leg part, 20c, 20c...Exciting coil, 20d
...Connection line, G4...Gap between the engaging part and the engaging piece, G5...Gap between the unlocking element and the engaging piece,
G6...Gap between the unlocking element and the retaining part.

Claims (1)

[Claims] 1. A landing door that opens and closes the car entrance, an engagement mechanism that is latched to the landing side to hold the landing door in the closed position, a car door that opens and closes the car entrance, and a car door that opens and closes the car entrance. It has a vane that is provided on the door and is engaged with the engagement mechanism, and a drive machine that opens and closes the car door. In the elevator door, the latch of the engagement mechanism is engaged and disengaged, and the landing door is opened and closed in conjunction with the engagement plate, which has an engagement piece and is fixed to the landing door. , an unlocking element provided on the locking mechanism, and a vane having a locking portion and fixed to the corner door;
An excitation coil is provided on either one of the unlocking element, the retaining piece, and the engaging part to excite all of the unlocking element, the retaining piece, and the engaging part, and the unlocking element and the retaining piece are It is composed of a magnetic material, and when the excitation coil is excited, an attractive force acts on the vane made of magnetic material, and when the door is opened, the unlocking element and the engaging piece are activated in that order. A retaining device for an elevator door, characterized in that the retaining device is arranged so as to come into contact with a retaining portion of a vane.