JPH05330770A - Door lock device of elevator car - Google Patents

Abstract

PURPOSE:To eliminate the installation of a stopper at an elevating passage wall between floors Men a distance between the floors is small in the door lock device of an elevator car which disables the elevator door to be opened by a passenger from the inside of the car if the elevator car stops at a position apart from an entrance hall due to failure or the like. CONSTITUTION:Elevator car side stoppers 11a, 11b are disposed at the upper and lower end parts of an elevator car door 2b, whereas the stoppers are constituted so that their lengths in a vertical direction become different from each other. Stoppers are installed at the entrance hall as well so as to face the upper and lower stoppers 11b, 11a. Besides, a cut part is provided in the entrance hall side stopper so that the door can be opened when a difference in height between an entrance hall floor and an elevator car is small, and the length of the stopper 11a on the elevator car side is made longer than that of the shorter cut part on the entrance hall side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device for an elevator car.

[0002]

2. Description of the Related Art FIGS. 4 to 6 show a conventional door lock device for a car of an elevator. A car door 2 for closing a doorway 1a of a car room 1 of an elevator comprises a driven door 2a and a driving door 2b. Is becoming The door hangers 3a and 3b suspend the car doors 2a and 2b, respectively. The girder 4 fixes the fulcrum of the door machine 5 and the link mechanism 6, and further the rail 7 of the door, and is fixed from a car frame (not shown) via a girder mounting arm (not shown).

Door motor 5 mounted on door machine 5
The power of a is decelerated and the link arm 6
It is transmitted to the link mechanism 6 by a. Link mechanism 6
Consists of four stations and is connected to the drive door 2b by links 6a, 6b, 6c, 6d. Also, the connecting arm 6e
Is transmitted to the driven link 6f by means of, and is coupled to the driven door 2a by the link 6g. Safety shoe 8
When the door is closed, move to the tip of the car doors 2a, 2b,
The contact rods 8a, 8b and the cam link mechanism 8 for retracting the contact rods 8a, 8b from the tip of the door when the door is fully closed and when the door is fully opened.
It consists of c and 8d. The car sill 9 guides the door legs at the lower ends of the car doors 2a, 2b in an opening and closing method.

The movable vane 10 engages the opening / closing force of the car door 2 with a landing door (which will be described later) having no driving mechanism power to drive the landing door in synchronization with the car door 2. It is provided above the door 2 of the basket. In addition, the movable vane 10 has a long length so that the electric door can be opened during the car stop motion, and the car door 2 and the landing door can be engaged and closed at the position where the landing door is located during maintenance and inspection. Has a length L ₁ . The car-side stopper 11 engages with a stopper (described later) provided on the landing side to move the car door 2 from the inside of the car room 1 when the car is considerably separated from the landing side (± 457 mm or more in ANSI code). Is to prevent it from opening.

Although it is desired to make the car-side stopper 11 as long as possible, as can be seen from FIG. 4, the car door 2
Since the opening / closing link mechanism 6, the safety shoe link 8d, etc. are arranged in the above, the length (L ₂ + L ₃ ) is arranged so as not to come into contact with these when the door is opened and closed so that the door cannot be opened and closed. In addition, the cage side stopper 11 and the movable vane 10
Are arranged so as to project toward the landing side from the front end line of the sill 9 of the car and have an engaging relationship with the opposing equipment on the landing side.

The hall entrance / exit frame 21 is provided at the entrance / exit of an elevator on each floor of the building, and the hall doors 22 for closing the door entrances 22a and 22b are driven doors 22b. The door hangers 23a and 23b are doors 22 of the hall.
a and 22b are suspended. Door hanger case 24
Fixes the door device of the hall to the hoistway and opens and closes the door 22 of the hall. The pulleys 25a and 25b are fixed to the hanger case 24 and guide the interlocking rope 26.

The locking device 27 of the landing door 22 is provided with the latch 2
7a, a latch 27b, and a connecting metal 27c. The landing gear engagement device 28 engages the movable vane 10,
The door 22 of the landing is driven to open and close, and a crank 28a, a roller 28b attached to the tip of the crank and a fixed roller 28c
It consists of The landing sill 29 has a groove (not shown) for guiding the legs of the door 22 in the landing in the opening / closing direction. At the center of the hall-side stopper 30 of the car door locking device fixed to the door 22b of the landing, there are cutouts length L _5, L _{5
= {(L 1/2)} + (L 1/2) + L 2 + L 3 + 2 × L 4}
It is composed of. The downward approximately L ₆ lower landing auxiliary stopper 30c is is arranged.

Next, the operation will be described. (1) When the car stops in the engagement zone with the hall due to elevator failure The movable vane 10 of the car is engaged with the hall engagement device 28. When a passenger in the car room 1 opens the car doors 2a, 2b, the vane 10 pushes the roller 28b, and the crank 28
a rotates to lower the connecting metal 27c. Then, the latch 27a is raised, and the lock with the latch 27b is released. Further, the car-side stopper 11 is provided for the car door 2 and the landing door 2.
Since the car 2 and the car door 2 move by engaging with each other, the car door 2 and the car door 22 are opened at the same time while the car side stopper 30 is still engaged, and the passengers in the car room 1 move between the car and the car floor. There is no step and you can safely escape from the car by yourself.

(2) When the car stops outside the engagement zone (± 320 mm or more) near the hall (within ± 457 mm) due to an elevator failure, passengers in the car room 1 open the car doors 2a, 2b. ..
At this time, the car-side stopper 11 can pass through the notch 30b of the landing-side stopper 30. In this way, when only the car door 2 is opened first, and then the connecting metal 27c of the hall is pulled down to unlock the lock, it is possible to escape to the hall side. In this case, the landing difference between the car and the landing is 450 to 320.
Since it is about mm, passengers do not fall into the hoistway.

(3) When the car stops at a position away from the landing (± 450 mm or more) due to elevator failure When a passenger tries to open the car doors 2a and 2b from the car room 1, the car side stopper 11 is Since the door 22 of the landing hits the landing stopper 30a and is locked by the locking device 27, the door cannot be opened. In this case, a maintenance man unlocks the lock with a key from the landing side, and the car position is adjusted to a certain level (± 457 m
Rescue passengers within m).

[0011]

In the conventional elevator car door lock device as described above, since the car-side stopper 11 is short, the car door 2 is located slightly away from the landing.
It is necessary to provide an auxiliary stopper 30c for locking the shaft on the wall of the hoistway. Therefore, there is a problem in that a large number of auxiliary stoppers 30c need to be attached to the hoistway wall at the time of installation by using anchor bolts, which makes the installation time-consuming and costly.

The present invention has been made to solve the above problems, and the floor height is such that the floors of the landing are connected by the length of the entire door of the car. If so, it does not require an auxiliary stopper provided on the hoistway wall, and even if there is no landing point for a long distance like the express zone, it is sufficient to place a short stopper on the hoistway wall for the elevator car. The purpose is to obtain a door lock device.

[0013]

According to a first aspect of the present invention, there is provided a door lock device for a car of an elevator according to the first aspect of the present invention, wherein a car-side stopper is vertically divided into two parts. Is provided with a plurality of notches that allow the upper stopper and the lower stopper to pass therethrough.

In the elevator car door lock device according to the second aspect of the present invention, the car-side stopper is constituted by the upper stopper and the lower stopper having different vertical lengths, and the landing-side stopper facing them is provided with: A plurality of notches are provided to allow passage of the upper and lower stoppers only when the floor level difference of the car is within the specified range, and the length of the longer stopper on the car side corresponds to the shorter stopper. It is longer than the length of the cutout.

[0015]

In the present invention, when the height of the landing floor is about the same as the height of the door of the car due to the two stoppers at the upper and lower ends of the car door and the long stoppers provided on the landing side. Does not need to be provided with a hoistway stopper between floors.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, those parts which are the same as or correspond to those in FIGS. 4 to 6 are designated by the same reference numerals, and a description thereof will be omitted. The car-side stopper 11 includes a lower stopper 11a and an upper stopper 11b. The upper stopper 11b is attached to the link 6c by a bracket 11c. The upper stopper 11b is pin diameter of about 10 mm, the lower stopper 11a is long Satoshi about L _8, the top and bottom are changing the size of the stopper. Further, the upper stopper 11b and the lower stopper 11a are kept at a distance of L ₇ , and are arranged as far apart as possible over the entire height of the car door 2.

The landing-side stopper 30 has a length larger than the height of the landing door 22 and is vertically arranged on the landing door 22b. The landing-side stopper 30 is formed by an L-shaped angle, and one side projects to the car side. The other is extended to the door pocket side. Further, the side extended to the door pocket side is the hall threshold 29
The gap A is maintained with respect to the front end line of No. 3, and the threshold 29 and the hall-side stopper 30 do not come into contact with each other even when the hall door is opened and closed. Further, the gap B ₁ (not shown) between the upper stopper 11b of the car and the landing side stopper 30 is
Since the upper stopper 11b is located in the middle of the link and has less movement than the stroke of the door, the gap is smaller than the gap B ₂ between the lower stopper 11a of the car and the landing side stopper 30. Usually about a B ₂ 40m
Set to about m.

The landing side stopper 30 is provided with a notch corresponding to the car side stopper 11. The basket is 320 ~
A notch 30b ₁ is provided in correspondence with the upper stopper 11b of the car so that the car door 2 can be opened even at a position above the 450 mm landing, and the car is located at 32
A notch 30b ₂ is provided corresponding to the upper stopper 11b of the car door 2 so that the car door 2 can be opened even at a position below 0 to 450 mm.

Further, the car door 2 can be opened even at a position where the car is above the landing of 320 to 450 mm.
Notch 30b corresponding to the lower stopper 11a of the car door 2
₃ is provided so that the car door 2 can be opened even at a position where the car is 320 to 450 mm below the landing, so that the lower end of the landing side stopper 30 corresponds to the lower stopper 11a of the car door 2. 30a ₄ is set. Therefore, the landing-side stopper 30 has the above-described three notches 30b.
Adjacent to ₁ , 30b ₂ and 30b ₃ , the stopper 30 from above
This means that a ₁ , 30a ₂ , 30a ₃ and 30a ₄ are provided.

Next, the operation will be described. (1) The car is in the engagement zone (± 3
Since the movable vane 10 of the car is engaged with the engaging device 28 at the landing, the passenger in the car room 1 can simultaneously open the car door 2 and the landing door 22 at the same time. It can be opened from within. In this case, although the upper stopper 11b and the stopper 30a ₂ and the lower stopper 11a and the stopper 30a ₄ are in the contacting positions, the car door 2 and the landing door 22 are relatively integrated and open, so that there is substantially no obstacle. Does not mean

(2) When the car stops near the landing (± 320 to 450 mm) outside the engagement zone due to an elevator failure or the like, when a passenger opens the car door 2 from inside the car room 1, the car door 2
The lower stopper 11a of the notch 30b ₃ or the stopper 3
0a ₄ and the upper stopper 11b has a notch 30
Pass b ₁ or 30b ₂ . After that, the connecting money of the landing
Passengers can safely escape by pulling 7 and opening the lock to open the landing door 22. In this case, the landing step is 4
Since it is 50 mm or less, it does not fall into the hoistway.

(3) When the car stops at a distance (± 450 mm or more) from the hall due to an elevator failure, etc. When a passenger tries to open the car door 2 from inside the car room 1, the car-side stopper 11 hits the hall stopper 30. , I can't open the car door 2. In the case of the floor height as shown in the figure, the upper stopper 11b and the lower stopper 11a of the car act to contact the landing-side stopper 30 on the upper floor and the landing-side stopper 30 on the lower floor. There is no inconvenience without providing an auxiliary stopper on the hoistway wall in the middle of the hall. Further, since changing the stopper 11a, and 11b size of Kagonoto 2, even if passing through the notch 30b ₃ upstairs upper stopper 11b, the lower floor cutouts 30b ₁
Alternatively, if 30b ₂ is a large stopper that the lower stopper 11a cannot pass through, door opening can be prevented.

To further explain the above operation, stoppers 11 having different sizes (in the height direction) are provided above and below the car door 2.
a notch 30 through which the stoppers 11a, 11b of the car door 2 can pass when the car stops at a position slightly apart from the engagement zone of the door 22 at the landing.
Since the hall-side stopper 30 having b ₁ , 30b ₂ and 30b ₃ is provided, when the height of the hall is equal to or lower than the height of the door 2 of the car, the auxiliary stopper may not be arranged in the hoistway. The door 2 can be locked.

The stopper 11 provided on the car door 2 is such that one of the upper and lower sides is long in the height direction, and the longer stopper length is longer than one cutout length of the landing side stopper 30. This ensures that the car door 2 can be locked even if the car stops across the upper and lower floors.

Further, since the landing-side stopper 30 is provided so that the door lock of the car operates even in the engagement zone portion, even when the car of the elevator stops over the upper floor and the lower floor, ( It is possible to lock the car door 2 (without auxiliary stopper between floors).

Furthermore, since the stopper 11b provided on the upper side of the car is arranged on the drive link 6c of the car door 2, the car side stopper 11 can be arranged near the upper end of the car door 2. The car door can be locked even if the car stops across the upper and lower floors and without an auxiliary stop between floors.

Further, since the upper stopper 11b on the car side is arranged in the middle of the link, the gap B ₁ in the fully closed state with the landing side stopper 30 is made smaller than the stroke B _{2 of} the door, The opening amount is configured to open to the same extent as B ₂ . Due to the above (3) and (4), the cage side stopper 1
1 can be placed at the upper and lower ends of the car door 2 and can lock the car door 2 even if the elevator car stops across the upper and lower floors and without auxiliary stoppers between floors. it can.

Furthermore, since the angle of the hall stopper 30 is arranged outward, the hall door 22 can be opened and closed with the hall sill 29 and the gap A, and the cage stopper 11 can be opened and closed. It can be arranged so that it does not normally come into contact with the elevator when traveling. Furthermore, the hall-side stopper 30 crosses over the hall threshold 29,
Can be stretched down and placed. With these,
The same effects as (1) to (4) can be obtained more effectively.

[0029]

As described above, the elevator car door lock device according to the first aspect of the present invention is provided at the upper and lower ends of the door of the car.
An upper stopper and a lower stopper are provided respectively, and a vertically long stopper provided on the door of the landing is provided with a notch through which the upper stopper passes and a notch through which the lower stopper passes, depending on the positional relationship with the car and the landing. Therefore, it is not necessary to provide an auxiliary stopper in the hoistway between floors, and it is possible to simplify the installation and achieve cost reduction.

Further, in the elevator car door locking device according to the second aspect of the present invention, the upper stopper and the lower stopper have different lengths from each other, and the longer stopper has the following length:
Since the length of the notch corresponding to the shorter stopper is made longer, in addition to the effect of the invention of claim 1, the car door is locked even when the car stops over the upper floor and the lower floor. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a front view of a car door device according to an embodiment of the present invention.

FIG. 2 is a front view of a hall door device according to an embodiment of the present invention.

FIG. 3 is a plan view showing an engaged state of the car door device and the hall door device according to the embodiment of the present invention.

FIG. 4 is a front view showing an example of a car door device in a car door lock device of a conventional elevator.

5 is a front view of a hall door device in the elevator of FIG. 4. FIG.

6 is a plan view showing an engaged state of a car door device and a landing door device in the elevator shown in FIG. 4;

[Explanation of symbols]

2 car door 11 car side stopper 11a lower stopper 11b upper stopper 22 landing door 30 landing side stopper 30b ₁ notch 30b ₂ notch 30b ₃ notch

Claims (2)

[Claims] 1. A car-side stopper having an upper stopper and a lower stopper respectively provided at upper and lower ends of a car door, and vertically provided on a landing door, wherein the car landing step is within a predetermined range. An elevator car door lock device, comprising: a landing-side stopper provided with a plurality of notches that allow passage of the upper stopper and the lower stopper only when inside. 2. A car side stopper having upper and lower stoppers respectively provided at upper and lower ends of a car door and having different vertical lengths, and a car side stopper provided at a landing door in the vertical direction. The landing-side stopper provided with a plurality of notches that allow passage of the upper stopper and the lower stopper only when the landing step of the car is within a predetermined range. The door lock device for the elevator car, characterized in that the length is longer than the length of the notch corresponding to the shorter stopper.