JP2001253671A - Interlocking device for elevator door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a stroke and an over travel to engagement and a time required for opening/closing a door and to improve a design property in a door opening/closing time by forming two blades on the car side of mutually oscillatable movable blades 1a and 1b. SOLUTION: When a door on the car side starts to open, the first movable blade la is moved and the second movable blade 1b is also moved reversely via links 1c, 1d, so that an interval between them is narrowed, while fork end rollers 4a, 4d are put between the movable blades so as to turn an interlock piece 4, and a latch part 4c in the interlock piece 4 is released from a fixing hook 5. In this way, the car side door and a landing side door are opened interlockingly. In closing the door, the first and second movable blades 1a, 1b are simultaneously moved in the opposite directions via the links 1c, 1d so as to widen a clearance between them, the fork end rollers 4a, 4d put between them are released, and the interlock piece 4 is returned to its original state for engaging the latch part 4c in the fixing hook 5 so as to fix the landing side door.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an elevator door interlock device.

[0002]

2. Description of the Related Art A door machine is provided above a doorway of a car, and the rotation of a door motor of the door machine is converted into a right and left motion by using a belt or a link to open and close the door. An interlock device is provided for opening and closing the side door and the car side door in conjunction with each other. Conventionally, such an elevator door interlock device has a configuration shown in FIG.

A conventional elevator door interlock device will be described. When the elevator car arrives at the floor where the elevator car is located, the interlock pieces 4 installed on the landing side
The rollers 4a and 4d attached to the fork of the car enter between the movable blade 1a and the fixed blade 1b on the car side. Movable blade 1
a is configured to be swingable, and the fixed blade 1b is fixed to the car-side door. And these two blades 1a, 1b
The links are connected by links. The distance between the movable blade 1a and the fixed blade 1b is set to be wider than the width of the forked rollers 4a and 4d so that a clearance can be obtained.

When the car side door starts to open, the movable blade 1a is guided along with the guide roller 1c along the cam rail 2 installed on the car side.
The interval between the blades 1a, 1b is narrowed, and the forked rollers 4a, 4d of the interlock piece 4 are narrowed.
The interlock piece 4 is rotated by being interposed therebetween, and the latch portion at the tip is released from the lock 5. As a result, the landing-side door also opens together with the opening of the car-side door.

On the contrary, when the door is closed, the movable blade 1a is guided along with the guide roller 1c along the cam rail 2 provided on the car side, and accordingly, the two blades 1a,
The interval of 1b widens, the forked rollers 4a and 4d of the interlock piece 4 sandwiched so far are released, the interlock piece 4 rotates by its own weight, returns to the original state, and the landing-side door is closed. By the way, the latch portion at the tip of the interlock piece 4 is engaged with the lock 5, and the landing-side door is locked.

[0006]

However, in the case of such a conventional elevator door interlock device,
When the door on the car side starts to open, the guide roller 1c of the movable blade 1a moves along the cam rail 2 to move only the movable blade 1a side, and the distance between the two blades 1a and 1b is reduced.
If the door travels long enough to completely sandwich the forked rollers 4a and 4d of the interlock piece 4, and if the door speed is increased before the door is completely engaged, the roller 4a of the interlock piece 4 , 4d and the two blades 1a, 1b may not be able to smoothly move the landing-side door. For this reason, there is a problem that the speed of the door must be reduced near the door start and the door closed end, and the door opening / closing time must be lengthened accordingly. In addition, the gap between the car-side door and the landing-side door when engaged (hereinafter, referred to as
Overtravel), which also has a problem that affects the design when the door is opened.

The present invention has been made in view of such a conventional problem, and the two blades on the car side are both movable blades which can swing, thereby reducing the stroke up to the engagement and the overtravel. To reduce the time required to open and close the door,
It is another object of the present invention to provide an interlock device for an elevator door that also improves the design when opening and closing the door.

[0008]

According to the first aspect of the present invention, an interlock device for an elevator door moves a car side door so that a distance between the doors is reduced when the door is opened and a door is closed when the door is closed. The first that moves so that the interval of
A state in which a second movable blade is provided, a rotation fulcrum of the interlocking piece is supported on a landing-side door, and a gap between the first and second movable blades is widened on the rotation fulcrum side of the interlocking piece. To lock the door on the landing side by engaging the latch portion of the interlock piece with the fixed hook by its own weight rotation, thereby narrowing the interval between the first and second movable blades. Thereby, a bifurcated roller is provided to rotate the interlock piece to release the latch portion from the fixed hook.

In the elevator door interlock device according to the first aspect of the present invention, when the car arrives at the landing floor and the car side door starts to open, the first and second doors provided on the car side door are opened. The movable blades move simultaneously so as to reduce the distance between each other, and rotate the interlock piece with the bifurcated roller interposed therebetween, thereby releasing the latch portion of the interlock piece from the fixed hook. As a result, the car side door and the landing side door are linked and opened. When closing the door, the first and second
The movable blades move at the same time to widen the interval between each other, release the forked roller that was sandwiched between them, return the interlock piece to its original state by rotation by its own weight, and engage the latch part with the fixed hook, Secure the landing door.

By simultaneously moving the first and second movable blades at the time of opening and closing the door, the stroke until engagement and overtravel are reduced, the time required for opening and closing the door is shortened, and the design at the time of opening and closing the door is also improved. Improve.

According to a second aspect of the present invention, there is provided an elevator door interlock device, wherein a center point of a link is rotatably supported on a car side door, and a first movable blade is provided at one end of the link.
A second movable blade is connected to the other end, and the first and second movable blades are moved so as to reduce the distance between each other when the car-side door is opened, and when the car-side door is closed. The doors on the landing side support the rotation fulcrum of the interlock piece, and the space between the first and second movable blades is increased on the rotation fulcrum side of the interlock piece. In a state where the movable blade is inserted, the latch portion of the interlock piece is engaged with a fixed hook by rotation of its own weight to lock the landing side door, and the first and second doors are locked.
The interlocking piece is rotated by narrowing the interval between the movable blades, and a bifurcated roller is provided to release the latch portion from the fixed hook.

In the elevator door interlock device according to the second aspect of the present invention, when the car-side door starts to be opened, the first movable blade moves, and the second movable blade also moves in the opposite direction via the link, so that the distance between each other is increased. Is narrowed, the fork roller is sandwiched between them, the interlock piece is rotated, and the latch portion of the interlock piece is released from the fixed hook. As a result, the car-side door and the landing-side door can be linked and opened. When the door is closed, the first and second movable blades simultaneously move in opposite directions via the link to widen the gap therebetween, release the forked roller sandwiched therebetween, and return the interlock piece to the original state. And the latch portion is engaged with the fixing hook to fix the landing-side door.

In this manner, the first and second movable blades are simultaneously moved in the opposite directions when the door is opened and closed, so that the operation of widening and narrowing is accelerated, the stroke until engagement and the overtravel are reduced, and the time required for opening and closing the door is shortened. In addition, the design when opening and closing the door is also improved.

According to a third aspect of the present invention, in the elevator door interlock device of the second aspect, the first movable blade is provided with a guide roller, the car is provided with a cam for guiding the guide roller, and the car is provided with a cam. By moving the guide row along the cam when the door is opened,
The distance between the first movable blade and the second movable blade is narrowed via the link.

In the elevator door interlock device according to the third aspect of the present invention, when the car-side door starts to be opened, the first movable blade starts to move by the guide roller being guided by the cam, and the first movable blade starts to move through the link. The movable blade 2 also starts to move, and starts moving so as to reduce the distance between each other. When the door is closed, the first and second movable blades move so as to widen the gap therebetween by the reverse movement. Thus, when the door is opened and closed, the first and second movable blades can be quickly and almost simultaneously moved in the opposite directions to each other, so that the stroke until the engagement and the overtravel are reduced to shorten the time required for opening and closing the door, It also improves the design of the door when opening and closing.

According to a fourth aspect of the present invention, in the elevator door interlock device of the second aspect, a guide roller is provided on the first movable blade, a roller guide for guiding the guide roller is provided on the car, and the link is provided. The end connected to the first movable blade is positioned lower than the end connected to the second movable blade, and the guide roller is connected to the guide roller when the car-side door is opened. By moving the lower side, the first movable blade is moved downward, and conversely, the second movable blade is moved upward.

According to a fifth aspect of the present invention, in the elevator door interlock device of the fourth aspect, a force for constantly increasing a distance between the first and second movable blades is applied to the second movable blade. Weight to adhere.

In the elevator door interlock device according to the fourth and fifth aspects of the present invention, the force of lowering the second movable blade downward by the weight of the second movable blade and also by the weight of the weight attached thereto. As a reaction, the force for pushing up the first movable blade via the link acts strongly, and the guide roller can be pressed against the lower surface of the roller guide. Therefore, when closing the door, the first,
The second movable blade can be quickly moved so as to widen the distance between the blades, and the distance between the two can be held open even when the blade is stopped. Time can be shortened.

According to a sixth aspect of the present invention, there is provided the elevator door interlock device according to any of the second to fifth aspects, wherein the first and second elevator doors are provided.
A spring for urging the force to open the gap between the two movable blades is provided.
The second movable blades can be moved quickly so as to widen the distance between them, and the time required for completing the door closing can be shortened.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a configuration of an elevator door interlock device according to a first embodiment of the present invention. FIG. 1 shows a state immediately after landing of an elevator car on a certain floor. First and second movable blades 1
a and 1b are provided on the car-side door, and the two are connected by links 1c and 1d to form a four-bar link mechanism. The middle point of each of the links 1c and 1d is supported by a door as a rotation fulcrum 1e and 1f. A guide roller 1g is attached to the upper end of the first movable blade 1a.
A cam 6 serving as a roller guide is attached to the car, and the guide roller 1g is moved along the cam 6 when the car door is opened and closed.

An interlock piece 4 is installed on the door on the landing side. The hook 5 is fixed to the landing side. The base of the interlock piece 4 is bifurcated, and the rollers 4a,
4d is attached. And this interlock piece 4
Is pivotable about the center of the roller 4a as a fulcrum 4b. The state shown in FIG. 1 (a) is immediately before the car arrives at the stop floor and the door is started to be opened. Until the car arrives at the landing, a latch provided at the tip or the middle of the interlock piece 4 is provided. By engaging the portion 4c with the fixed hook 5 on the landing side, the landing side door is prevented from opening.

Next, the operation when the car lands on the stop floor and opens and closes the door will be described with reference to FIGS. 1 (a) and 1 (b). When the car lands on the stop floor and starts to open the car-side door from the state shown in FIG. 1A, both the first and second movable blades 1a and 1b start moving leftward in FIG.
At this time, the guide roller 1g at the upper end of the first movable blade 1a
Is initially lifted along the cam rail 6 and the link 1
c and 1d are rotated clockwise in the drawing around the rotation fulcrums 1e and 1f.

As a result, as shown in FIG.
The interval between the movable blades 1a and 1b is reduced, the rollers 4a and 4d of the interlock piece 4 are sandwiched between the movable blades 1a and 1b, and the interlock piece 4 is rotated counterclockwise around the fulcrum 4b in the figure. Rotate to lift the latch 4c.
As a result, the latch portion 4c is disengaged from the fixed hook 5, and the landing-side door can be moved, so that the landing-side door opens together with the car-side door.

When the door is once closed after being opened, at the door closed end position, the first and second movable blades 1a and 1b and the interlock piece 4 move from left to right in the state of FIG. It will come. In the vicinity of the door closed end, the guide roller 1g falls into the lower right end portion of the cam rail 6, whereby the first movable blade 1a first descends, rotating the links 1c and 1d in a counterclockwise direction. 2
The movable blade 1b is pushed rightward to open the space between the two movable blades 1a and 1b. As a result, the interlock piece 4 rotates clockwise by its own weight and returns to the state shown in FIG. 9A, and the latch portion 4c engages with the fixing hook 5 to fix the landing-side door.

As described above, in the first embodiment,
Since the two blades on the car side are both movable blades and are simultaneously operated so as to widen and narrow the interval with the opening and closing operation of the door on the car side, an interlocking piece at the beginning of opening the door on the car side. 4, the operation of releasing the interlocking piece near the door closed end can be also expedited. As a result, the door speed at the end of opening and closing the door does not need to be reduced, and the overall Door opening / closing operation time can be shortened.

Further, the operation of unlocking and re-locking the interlock piece at the door opening / closing end can be performed in a short stroke, so that overtravel can be reduced and the design at the time of opening / closing operation can be enhanced.

In the above-mentioned embodiment, the guide roller 1g at the upper end of the first movable blade 1a is guided by the cam rail 6 having a simple rail shape. However, the present invention is not limited to this. A cam groove shaped to be sandwiched from both sides may be used.

Next, an elevator door interlock device according to a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, members common to those of the first embodiment shown in FIG. 1 will be described using the same reference numerals.

The feature of the second embodiment is that the cam rail 6 provided on the car side is inclined such that the right end in the drawing is inclined upward to the right, and a guide roller 1g provided on the upper end of the first movable blade 1a is provided with a cam roller 6g. The link 1c, 1d connecting the first and second movable blades 1a, 1b is made to move along the lower surface side of the cam rail 6, and has a reverse inclination to that of the first embodiment. (Downward left). further,
The second movable blade 1b is also characterized in that a weight 1h is provided as needed to increase its own weight.

Next, in the second embodiment,
The operation when the car arrives at the stop floor and opens and closes the door will be described with reference to FIGS. 2 (a) and 2 (b). When the car arrives at the stop floor and starts opening the car-side door from the state shown in FIG. 2A, both the first and second movable blades 1a and 1b start moving leftward in FIG. At this time, the guide roller 1g at the upper end of the first movable blade 1a is first pushed down along the lower surface of the cam rail 6, and the links 1c and 1d are rotated counterclockwise around the rotation fulcrums 1e and 1f.

As a result, as shown in FIG.
The interval between the movable blades 1a and 1b is reduced, the rollers 4a and 4d of the interlock piece 4 are sandwiched between the movable blades 1a and 1b, and the interlock piece 4 is rotated counterclockwise around the fulcrum 4b in the figure. Then, the latch portion 4c is lifted. As a result, the latch portion 4c is disengaged from the fixed hook 5, and the landing-side door can be moved, so that the landing-side door opens together with the car-side door.

When the door is once opened and then closed, the movable blades 1a, 1a in the state shown in FIG.
b and the interlock piece 4 move from left to right. In the vicinity of the door closed end, the link 1c, 1d is always forced to rotate clockwise by the weight of the second movable blade 1b (or, if the weight 1h is attached, by the combined weight thereof). Since it is working, the guide roller 1g of the first movable blade 1a is lifted along the tip of the cam rail 6 which rises to the right, and the first movable blade 1a is also lifted. As a result, the links 1c and 1d rotate clockwise, and push the second movable blade 1b to the right, thereby increasing the interval between the two movable blades 1a and 1b. As a result, the interlock piece 4 rotates clockwise under its own weight, and
The latch portion 4c engages with the fixing hook 5 to fix the landing-side door.

As described above, also in the second embodiment,
Since the two blades on the car side are both movable blades and are simultaneously operated so as to widen and narrow the interval with the opening and closing operation of the door on the car side, the same as in the first embodiment, As a result, the unlocking operation of the interlock piece 4 at the beginning of opening the door can be expedited, and the operation of releasing the interlocking piece 4 near the door closed end can be expedited. It is not necessary to reduce the speed, the overall door opening / closing operation time can be shortened, the overtravel can be reduced, and the design during opening / closing operation can be enhanced.

Further, in the case of the second embodiment, the guide roller 1g of the first movable blade 1a is used as a reaction by utilizing the own weight of the second movable blade 1b and further urging it by the weight 1h. Can be constantly pressed against the lower surface of the cam rail 6, and the operation of the first and second movable blades 1a and 1b at the time of opening and closing can be surely performed.

In the above-described embodiment, the guide roller 1g at the upper end of the first movable blade 1a is guided by the cam rail 6 having a simple rail shape, but the guide roller 1g is sandwiched from both upper and lower sides. A cam groove having such a shape may be used.

In the first and second embodiments, as shown in FIG. 3, the first and second movable blades 1a, 1a
It is also possible to provide a spring 1j for urging a force for constantly expanding the interval between the points b. Accordingly, when the operation of widening the interval between the first and second movable plates 1a and 1b using the own weight at the door closed end is not smooth, the spring 1j is interposed between the two to enable the door closed end. Therefore, the distance between the movable blades 1a and 1b can be quickly increased.

The spring 1j has movable blades 1a and 1b.
The interposition between the movable blades 1a and 1b prevents the movement of the movable blades 1a and 1b when the car-side door is opened. However, when the car-side door is opened, the spring 1j is easily moved by the force of the door motor. Since the distance between the first and second movable blades 1a and 1b can be reduced against the force, there is no possibility that the operation of the movable blades 1a and 1b at the door open end is hindered.

[0038]

As described above, according to the first aspect of the present invention, by simultaneously moving the first and second movable blades when the door is opened and closed, the stroke up to engagement and the overtravel are reduced, and the door is opened and closed. The time required for opening and closing the door can be improved.

According to the second aspect of the present invention, when the door on the car side starts to be opened, the first movable blade moves, and the second movable blade also moves in the opposite direction via the link to reduce the distance between the two. By interposing the bifurcated roller between them and rotating the interlock piece, and releasing the latch part of the interlock piece from the fixed hook, the car side door and the landing side door are linked to open, and the door is opened. When closing, first and second
The movable blade moves simultaneously in opposite directions via the link to widen the distance between each other, releasing the forked roller that was sandwiched between them, returning the interlock piece to the original state, and engaging the latch part with the fixed hook The door on the landing side is fixed, so that when the door is opened and closed, the first and second movable blades are simultaneously moved in opposite directions to speed up the operation of widening and narrowing, thereby reducing the stroke and the overtravel until the engagement. The size can be reduced, the time required for opening and closing the door can be shortened, and the design at the time of opening and closing the door can be improved.

According to the invention of claim 3, in addition to the effect of the invention of claim 2, when the car-side door starts to open, the guide roller starts to move by being guided by the cam, and together with the guide roller, the first roller moves. The movable blade starts to move, and the second
The movable blades also begin to move, and start moving almost simultaneously so as to reduce the distance between each other, and when the door is closed, the first and second movable blades move simultaneously so as to widen their distance by the opposite movement. Therefore, when opening and closing the door,
The movable blades can be moved quickly and reliably in the opposite directions simultaneously, reducing the stroke and overtravel until engagement, shortening the time required for opening and closing the door, and improving the design when opening and closing the door. Can be improved.

According to the invention of claims 4 and 5, claim 2
In addition to the effect of the invention, the force of lowering the second movable blade downward by the own weight of the second movable blade and further by the weight of the weight attached to the second movable blade greatly acts, and the reaction of the second movable blade The force for pushing up the movable blade 1 works strongly, so that the guide roller can always be reliably pressed against the lower surface of the roller guide.
The movable blades can be moved more quickly so as to widen the distance between the movable blades, the stroke until engagement can be reduced, and the time required for completing the door closing can be shortened.

According to the sixth aspect of the present invention, in addition to the effects of the second to fifth aspects, a spring is provided between the first and second movable blades to apply a force for increasing a distance between the first and second movable blades. When the door is closed, the first and second movable blades can be moved more quickly so as to widen the interval, the stroke until engagement can be reduced, and the time required to complete the door closing can be shortened.

[Brief description of the drawings]

FIG. 1 is a mechanism diagram showing a state at the time of landing on an elevator according to a first embodiment of the present invention, and a mechanism diagram showing a state immediately after a door is opened or immediately before a door is closed.

FIG. 2 is a mechanism diagram showing a state at the time of landing on an elevator according to a second embodiment of the present invention, and a mechanism diagram showing a state immediately after a door opening is started or immediately before a door is closed.

FIG. 3 shows first and second embodiments according to the third embodiment of the present invention.
FIG. 4 is a mechanism diagram showing a state in which a spring is provided between movable blades.

FIG. 4 is a mechanism diagram showing a state at the time of elevator landing in a conventional example, and a mechanism diagram showing a state immediately after start of door opening or immediately before door closing.

[Explanation of symbols]

 1a 1st movable blade 1b 2nd movable blade 1c link 1d link 1e rotation fulcrum 1f rotation fulcrum 1g guide roller 1h weight 1j spring 4 interlock piece 4a roller 4b fulcrum 4c latch part 4d roller 5 fixed hook 6 cam rail

Claims (6)

[Claims] 1. A car-side door is provided with first and second movable blades that move so as to reduce the distance between the doors when the door is opened, and move so as to increase the distance between the doors when the door is closed. The door on the landing side supports the rotation fulcrum of the interlocking piece, and enters the space between the first and second movable blades on the rotation fulcrum side of the interlocking piece in a state where the interval between the first and second movable blades is wide, Locking the landing side door by engaging the latch portion of the interlock piece with the fixed hook by its own weight rotation,
An interlock device for an elevator door, comprising: a bifurcated roller for rotating the interlock piece by removing a gap between the first and second movable blades to release the latch portion from the fixed hook. 2. A midpoint of a link is rotatably supported on a car side door, and a first movable blade is provided at one end of the link.
A second movable blade is connected to the other end, and the first and second movable blades are moved so as to reduce the distance between each other when the car-side door is opened, and when the car-side door is closed. The doors on the landing side support the rotation fulcrum of the interlock piece, and the space between the first and second movable blades is increased on the rotation fulcrum side of the interlock piece. In a state where the movable blade is inserted, the latch portion of the interlock piece is engaged with a fixed hook by rotation of its own weight to lock the landing side door, and the first and second doors are locked.
An interlock device for an elevator door, comprising a bifurcated roller for rotating the interlock piece by removing the gap between the movable blades to release the latch portion from the fixed hook. 3. A guide roller is provided on the first movable blade, a cam for guiding the guide roller is provided on the car, and the guide row is moved along the cam when a door on the car side is opened. The interlock device for an elevator door according to claim 2, wherein the first movable blade and the second movable blade are narrowed in distance from each other via the link. 4. A guide roller is provided on the first movable blade, a roller guide for guiding the guide roller is provided on the car, and an end of the link connected to the first movable blade is connected to the second movable blade by the second movable blade. Moving the lower side of the roller guide to the guide roller when the car-side door is opened, thereby lowering the first movable blade to the lower side. The elevator door interlock device according to claim 2, wherein the second movable blade is moved upward by moving the second movable blade upward. 5. The weight according to claim 4, wherein a weight is applied to the second movable blade so as to constantly apply a force to open the gap between the first and second movable blades. An interlock device for an elevator door as described in the above. 6. The elevator door interface according to claim 2, wherein a spring is provided between the first and second movable blades to apply a force for increasing a distance between the first and second movable blades. Locking device.