JPH1036046A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator which can eliminate the fear that a car door cannot be opened or closed as a door driving load fluctuates. SOLUTION: An electromagnet 9A is mounted on the back of a car door via a protective stand 18A and a support 19A, An electromagnet 9B is mounted on the door stop side of the back of a landing door via a protective stand 18B and a support 19B. Further, an engaging part 38 is secured to the back of the landing door in such a way that the electromagnet 9A is sandwiched between the engaging part 38 and the electromagnet 9B. At the final stage of the closing action of the landing door, the electromagnets 9A, 9B are magnetized to produce a repulsive force between them to bring the door stop surfaces of the landing doors close together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an elevator.

[0002]

2. Description of the Related Art FIG. 11 is a partial perspective view showing an example of a conventional elevator landing and car. In FIG. 11, the landing 24
Above the sill 34 laid at the tip of the hall, a double-door double door type landing door 30 is erected, and these landing doors 30 are laid horizontally on the back side of the building wall above the tip of the landing 24. Not hung via a hanger plate which is hung on a rail fixed to a hanger rail.

[0003] In these landing doors 30, a pair of guide shelves 30a is suspended from the lower end thereof.
a is loosely fitted in a groove 34a formed in the threshold 34. FIG.
Is suspended on one side of a main rope wound around a sheave of a hoist installed in a machine room (not shown) formed at the upper end of the hoistway 26, and is attached to the other side of the main rope. Has a counterweight suspended. The car 20 shown in FIG. 11 shows a case where the car door 22 stopped at the hall by the operation of the call button by the user of the hall is closed.

[0004] The car 20 has a
The door drive motor 14 is mounted. A door control device 13 is placed on the left side of the door drive motor 14 in FIG. 11, and an input signal line of the door control device 13 is installed at an upper end of a hoistway via a tail cord hanging from the car 20. Connected to a control panel (not shown).

The output shaft of the door drive motor 14 is connected to an upper end serving as a base of a car door opening / closing link 21, and the car door opening / closing link 21 is connected to upper ends of links 21a and 21b. The lower ends of these links 21a and 21b are
It is connected to the upper part of 22 via a pin.

A strip-shaped engaging plate 23 called a razor is vertically provided on the landing side of the car door 22, and a pair of hooks 31 into which the engaging plate 23 is loosely fitted are indicated by broken lines on the back surface of the landing door 30. It is provided as shown.

[0007] A reel 33A
Is provided. On each of the reels 33A, one side of a wire rope 35 whose one end is locked at the upper end of the landing door 30 is wound, and an intermediate portion of these wire ropes 35 is a reel 33B provided inside the hoistway 26. , The hoistway 26 is suspended, and a weight 32 is suspended at the lower end.

In the elevator thus constructed, when the car 20 arrives at the landing on a predetermined floor, the door control device 13 drives the door drive motor 14 in response to the door open signal input from the control panel. The car door 22 is opened via the car door opening / closing link mechanism 21.

When the car door 22 is opened, a locking mechanism (not shown) provided on the rear surface of the hall door 30 is first released by pressing a side surface of an engaging plate 23 provided vertically on the hall side of the car door 22. By locking and pressing the side surface of the hook 31 of the landing door 30, the landing door 30 opens according to the car door 22. With this opening operation, the weights 32 on both sides of the landing door 30 rise.

Similarly, a passenger enters the car 20 and the car door
Also when the 22 is closed, the landing door 30 is closed by the engagement plate 23 via the hook 31. Therefore, in this case, the weight 32 serves as an auxiliary driving force for closing the landing door 30. Further, after the closing operation is completed, it also serves as a force for suppressing a malicious act of opening the landing door.

Next, FIG. 12 is a block diagram showing the drive control of the door drive motor 14 by the door control device 13. FIG.
The central control unit built into the control panel described above
11 outputs a door opening / closing command 11a and a door closing force adjustment command 11b to the door control device 13 shown in FIG. 11 as described later.

On the other hand, the control panel is provided with a floor data reference table 12, and this floor data reference table 12
The load condition of the landing door on the floor side is stored as described below.

For example, on the base floor of a high-rise building, since the landing communicates with the outside of the building, when the landing door is opened, wind blows into the hoistway and rises up the hoistway. And the wind escapes from the gap between the thresholds. This phenomenon becomes remarkable in winter when the room is heated.

Therefore, in such a case, the power required to close the landing door on the reference floor increases due to the guide shush being pressed against the side of the sill. The central control device 11 to which the data corresponding to the required power is stored in advance and to which the data 12a is input outputs the door opening / closing command 11a and the door closing force adjustment command 11b corresponding to the required power to the door control device 13. And a torque adjustment command 13a for the car door drive motor 14.
Is output.

When the closing operation of the car door is completed, a detection signal 15a of the car door closing operation confirmation switch 15 provided between the car doors and the car is input to the central control device 11. Therefore,
When opening and closing the door on the base floor, the car drive motor 14
Is controlled so that the output torque is increased as compared with, for example, opening and closing the door on the upper floor.

As described above, in an elevator installed in a high-rise building, the car door is driven via the door control device 13 by the data of the floor data reference table 12 in which the door driving force which differs depending on the floor is stored. Thus, the driving force of the car door is adjusted in accordance with the floor, and the car door and the landing door are smoothly opened and closed.

[0017]

However, in an elevator in which the driving force of the car door is controlled in this manner, the door drive based on the data in the floor data reference table 12 is set according to the date when the building is heated. Since force control must be performed, at present, elevator maintenance personnel manually input and set each time on the basis of information from the manager of the building in question.

However, there is a case where all floors are not heated at the same time, and the pressure of the airflow that rises in the hoistway varies depending on the temperature of the outside air. However, the speed of the closing operation of the landing door may be too high to be dangerous, and conversely, the landing may not be completely closed.

To completely close the landing door, a method of increasing the capacity of the door drive motor is conceivable. However, the strength of the car door opening / closing link 2 must be increased. Weight increases. Accordingly, an object of the present invention is to provide an elevator that can eliminate the possibility that a car door cannot be closed due to a change in a load driving a door.

[0020]

According to the first aspect of the present invention, there is provided an elevator having a double door type car door and a landing door, wherein the opening and closing operation of the car door and the landing door are performed in an opening and closing direction by an electromagnetic force between each other. The electromagnet to be driven is opposed to the opposite side of the car door and the landing door.

In the elevator according to the second aspect of the present invention, the landing door is provided with an engaging piece in which the electromagnet on the side of the landing car door is loosely fitted to the electromagnet on the landing door side. I do.

According to a third aspect of the present invention, there is provided an elevator having a double door car door and a landing door, wherein the lower end of the landing door and the threshold of the landing door are moved to each other by electromagnetic force between them. It is characterized in that an electromagnet driven in a direction orthogonal to the threshold is opposed to the threshold.

According to a fourth aspect of the present invention, there is provided a double door type car door and a landing door, and an elevator provided with the landing door weight, wherein the weight and the guide portion of the weight are connected to each other by electromagnetic waves. An electromagnet that drives the landing door in the opening and closing direction by force is opposed to the electromagnet.

Further, the elevator according to the invention of claim 5 includes a detector for detecting a flow velocity of a wind passing between a hoistway and a landing, and an output signal of the detector being inputted to set a preset value. An arithmetic unit for comparing and outputting the result, and an exciting unit for receiving an arithmetic value output from the arithmetic unit and supplying an exciting current to the electromagnet are provided.

According to the first aspect of the invention, at the end of the closing operation of the landing door or at the beginning of the opening operation of the landing door, the electromagnetic force generated between the electromagnets causes the landing door to be closed. Apply closing or release force.

In the invention described in claim 2,
The closing operation of the landing door is performed via an electromagnet, and the opening operation of the landing door is performed via an electromagnet and an engaging piece on the car door side.

According to the third aspect of the present invention,
The pressing force applied to the lower end of the landing door which is being closed or opened by the wind passing between the hoistway and the landing is reduced by the electromagnetic force generated between the electromagnets.

Further, in the invention according to claim 4,
The driving force by the electromagnetic force generated between the electromagnets is added to the driving force at the end of the closing operation of the landing door or at the beginning of the opening operation.

Further, in the invention according to claim 5, the pressing force in the direction orthogonal to the threshold applied to the landing door by the wind passing between the hoistway and the landing is excited by the exciting current corresponding to the wind force. Reduced by electromagnetic force between electromagnets.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the elevator according to the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a first embodiment of an elevator according to the present invention, which corresponds to a cross-section of a car door and a landing door of FIG. 11 shown in the prior art, and FIG. FIG. 5 is a detailed enlarged perspective view of a part, showing a view from the car side, and the part B is also symmetrical.

In FIGS. 1 and 2, an electromagnet 9A is attached to the upper back surface (a landing side) of the car door 22 via upper and lower supports 19A as described below. on the other hand,
On the back side (car door side) of the landing door 30, an electromagnet 9B is attached to the door stop side so as to sandwich the electromagnet 9A, and an engaging portion 38 is attached to the door pocket side as described below, and the door closing is completed. At times, the closing force of the landing door 30 is exerted by the repulsive force between the electromagnets 9A and 9B as described below to maintain the closed state.

That is, the car door 22 has a pair of supports 19A.
Are fixed symmetrically up and down via a welding stud (not shown), and a U-shaped protection base 18A made of a high-strength aluminum alloy is screwed from the support 19A side to the opposite side of these supports 19A. It is fixed with bolts.

A C-shaped iron core is provided inside the protection base 18A.
An electromagnet 9A having a coil 17 inserted therein is fixed to the coil 16. The left end of the iron core 16 of the electromagnet 9A in FIG. 2 is retracted slightly to the right of the left end surface of the support 19A.

On the other hand, a pair of narrow supports 19B are fixed to the door stop side of the landing door 30 symmetrically in the vertical direction through a non-illustrated welding stud, and between these supports 19B. In a side view which is not shown, a U-shaped protection base 18B made of a high-strength aluminum alloy is fixed to a support 19B with bolts (not shown).

An electromagnet 9B of the same product as the right electromagnet 9A is inserted inside the protection table 18B, and is fixed to the protection table 18B with bolts (not shown). The width of the protection base 18B in the left-right direction in FIG. 2 is slightly wider than the width of the left and right treasures of the C-shaped iron core 16. As a result, the right end of the protection base 18B in FIG. Slightly protruding from

The terminals at both ends of the coils 17 of the electromagnets 9A and 9B are connected to an elevator control panel via a door control device. When the door is closed, the current flowing through each coil 17 generates a repulsive force due to the direction of the magnetic flux on the opposing surfaces of the left and right iron cores 16 being opposite to each other. Switch is connected as described above.

The engaging portion 38 attached to the door pocket side of the electromagnet 9A is provided with a support 19C fixed to the back side of the landing door 30.
Between them, an engaging piece 18C made of a high-strength aluminum alloy is fixed with bolts.

As described above, in the elevator in which the pair of electromagnets are opposed to the car door and the landing door with a small gap, the electromagnet 9A is located at the position where the electromagnet 9A is opposed to the electromagnet 9B on the landing door side by elevating the car when landing. When the car door 22 stops and the closing operation of the car door 22 is performed, the side of the guard stand 18A on the car door side is moved to the guard stand 18 on the landing door side.
The landing door 30 is pressed in the closing direction while being in contact with the side surface of B.

Even if the closing operation of the car door 22 is completed, the landing door 30
Even if the opposing surfaces of the landing door 30 do not adhere to each other due to the wind pressure, the landing door 30 can be further driven by the above-described repulsive force generated between the iron cores of the electromagnets 9A and 9B. The door stop surface of the door 30 can be completely adhered.

Conversely, when the door 22 is opened with the landing door 30 in the closed state, the start of the opening operation can be expedited by reversing the direction of the current of one of the coils. The impact of 18A colliding with the engagement piece 18C can be reduced.

In the above embodiment, the electromagnet 9
A and 9B are described only in one place, but the landing door
By providing the door stop 30 above and below the door stop portion of the car door 22, the door stop surface can be brought into uniform contact with the door stop regardless of the inclination of the car door 22 or the landing door 30.

FIG. 3 is a block diagram showing a second embodiment of the elevator according to the present invention, and FIG. 4 is a flowchart showing the operation of the arithmetic unit shown in FIG. In FIG. 3, a detection signal 1a of an air flow detector 1 provided between the landing door on the reference floor and the three-way frame, which will be described later with reference to FIG. Is output to the arithmetic unit 4 described in detail in FIG.

The arithmetic unit 4 checks the air volume in accordance with the input air volume data 2a, compares the air volume with the input signal of the comparison data 3a preset in the separately provided regulator 3, and outputs the air volume data 2a. Is greater than or equal to a predetermined value, the operation output 4a is converted to an output converter as described below.
Output to 10.

That is, another output data reference table 6
Stores output data 6a corresponding to the air volume data 2a, and the arithmetic unit 4 refers to the output data 6a of the lookup table 6 and outputs an excitation output 4a corresponding to the value.

The excitation output device 10 constitutes an excitation output device 7 together with the power supply device 8, converts the operation output 4a input from the operation device 4 into a predetermined excitation current, and converts the operation output 4a into a plurality of electromagnets 9A, 9A.
9B and 9N are excited.

FIG. 4 is a flowchart showing the operation of the arithmetic unit 4 described above.
, And the adjustment data 3a is input from the adjuster 3 in the next step 25B.

In the next step 25C, it is determined whether or not the air volume data is equal to or greater than the adjustment data 3a, and if NO, the process proceeds to step 25J to cancel the output to the excitation output device 7.

Conversely, if 2a ≧ 3a, the door opening information 5 is input, and the process proceeds to the next step 25E, and if the door is not closed, the process proceeds to step 25J described above. The process proceeds to step 25F to access the output table reference data 6, and proceeds to step 25G to obtain the output data 6a corresponding to the air volume data 2a.

FIG. 5 is an explanatory diagram showing one embodiment of the above-mentioned air volume detector 1. In FIG. 5, a shaft 27a of a propeller 27 provided between a car door threshold and a landing door threshold is shown.
Is connected to the rotating shaft of a generator 28, and the alternating power generated by the generator 28 is converted to DC by a rectifier 29.

FIG. 6 is an explanatory view showing another embodiment of the air volume detector 1, wherein a flexible plate 36 is provided at the tip of a coil spring 37.
The displacement of the flexible plate 36 due to the wind blowing on the flexible plate 36 is detected by a voltage.

FIG. 7 is an explanatory diagram showing the operation of the elevator configured as described above. In FIG. 7, after the car has landed on the upper floor and the passenger has boarded the car, when the car door 22 and the landing door 30 are closed, the air in the hoistway 26 is displaced by the arrow D.
As shown in FIG.

This inflow air enters between the car door 22 and the landing door 30 as shown by an arrow D2, and flows between the door stop of the landing door 30 that closes slightly later than the car door 22 by an arrow D3. Exit to the landing as shown in.

The landing door 30 is pressed against the landing side by the airflow, and the guide bush on the door stop side is pressed against the side surface of the groove of the threshold as shown in FIG. Although the closing operation load of the landing door suddenly increases, the closing operation of the landing door 30 is completed by exciting the electromagnets 9A and 9B with an excitation current corresponding to the detection signal 1a detected by the air flow detector 1 described above with reference to FIG. Let it.

FIG. 9 is a partial cross-sectional view showing an elevator according to a third embodiment of the present invention, and corresponds to FIG.
In FIG. 9, the electromagnet 9B shown in FIG. 2 is attached to the lower end of the landing door 30, and the electromagnet 9A shown in FIG.

In this case, just before the closing operation of the landing door 30 is completed, the repulsive force of the electromagnets 9A and 9B is used to reduce the pressing force of the car door 30 against the guide bush sill 34, The closing operation can be completed smoothly. Also,
When the landing door is pressed toward the car door on the reference floor or the like, for example, by changing the direction of the exciting current of the electromagnet 9A, an attractive force can be generated between the electromagnets to cope with the situation.

FIG. 10A shows a fourth embodiment of the elevator according to the present invention.
FIG. 10B is a partial perspective view showing the embodiment of FIG.
It is a longitudinal section enlarged view of (a). 10 (a) and 10 (b), the weight 32 is in the state immediately before the closing operation of the landing door is completed.
Between the substantially annular electromagnets 9
D and 9E are provided, and fixed by a fixed arm (not shown) fixed to the wall surface of the hoistway.

On the other hand, the electromagnet 9C is also fixed to the lower end of the weight 32, and immediately before the end of the closing operation, these electromagnets 9C are fixed.
C, 9D, and 9E are excited to generate a repulsive force between the electromagnet 9C and the upper electromagnet 9D as shown by the arrows in the electromagnet of FIG. 10B, and the electromagnet 9C and the lower electromagnet 9E are excited.
And a suction force is generated. As a result, weight 32
Since the lower end is pulled by the electromagnetic force acting on the electromagnet 9C, the closing force of the landing door can be increased.

When the landing door is opened, the exciting current of the electromagnet 9C among the electromagnets 9C, 9D and 9E is turned in the opposite direction in synchronization with the start of the landing door. On the other hand, an electromagnetic force is generated upward to reduce the driving force required for the opening operation.

In the above embodiment, the type of the door is
Although the description has been given of the case of the double door type, the present invention can be similarly applied to, for example, a double door type elevator regardless of the number of doors.

[0060]

As described above, according to the first aspect of the present invention, in an elevator provided with a double door type car door and a landing door, the opening and closing operation of the car door and the landing door are driven in the opening / closing direction by the electromagnetic force between them. At the end of the closing operation of the landing door or at the beginning of the opening operation, the electromagnet is opposed to the opposite side of the car door and the landing door, and the landing door is closed by the electromagnetic force generated between the electromagnets. Since the force or the opening force is added, it is possible to obtain an elevator that can eliminate the possibility that the car door cannot be closed due to the fluctuation of the load driving the door.

According to the second aspect of the present invention, the landing door is provided with an engaging piece in which the electromagnet on the side of the landing car door is loosely fitted to the electromagnet on the landing door side. The opening operation of the landing door was performed through an electromagnet, and the opening operation of the landing door was performed through an electromagnet and an engagement piece on the side of the car door. An elevator that can eliminate the fear can be obtained.

According to the third aspect of the present invention, there is provided an elevator having a double-door car door and a landing door,
The lower end of the landing door and the threshold of the landing door are closed or opened by the wind passing between the hoistway and the landing by opposing an electromagnet that drives the landing door in the direction orthogonal to the threshold by the electromagnetic force between them. Since the force applied to the lower part of the middle landing door is reduced by the electromagnetic force generated between the electromagnets, it is possible to eliminate the possibility that the car door cannot be closed due to fluctuations in the load driving the door. You can get an elevator.

According to the fourth aspect of the present invention, in the double door car door and the landing door, and in the elevator provided with the weight for the landing door, the weight and the guide portion of the weight are mutually connected. Electromagnetic force that drives the landing door in the opening and closing direction with the electromagnetic force between them is opposite to the driving force at the end of the closing operation of the landing door or the initial driving force of the opening operation, the electromagnetic force generated between the electromagnets Since the force is applied, it is possible to obtain an elevator that can eliminate the possibility that the car door cannot be closed due to a change in the load driving the door.

Further, according to the fifth aspect of the present invention,
A detector that detects the flow velocity of the wind passing between the hoistway and the landing, an arithmetic unit that receives an output signal of the detector, compares the output signal with a preset value, and outputs the result, and By providing an exciting unit to which the output operation value is input and supplying an exciting current to the electromagnet, the pressing force in the direction orthogonal to the threshold applied to the landing door by the wind passing between the hoistway and the landing is applied to the wind power. Since the force is reduced by the electromagnetic force between the electromagnets excited by the corresponding exciting current, it is possible to obtain an elevator that can eliminate the possibility that the car door cannot be closed due to a change in the load driving the door.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a first embodiment of an elevator according to the present invention.

FIG. 2 is an enlarged detailed rear view of a portion A in FIG. 1;

FIG. 3 is a block diagram showing a second embodiment of the elevator according to the present invention.

FIG. 4 is a flowchart showing the operation of the second embodiment of the elevator according to the present invention.

FIG. 5 is an explanatory diagram illustrating an example of an airflow detection unit of the elevator according to the second embodiment of the present invention.

FIG. 6 is an explanatory diagram showing another example of the air volume detection unit of the elevator according to the second embodiment of the present invention.

FIG. 7 is a partial cross-sectional view showing the operation of the first and second embodiments of the elevator of the present invention.

FIG. 8 is a partial cross-sectional view showing an operation different from that of FIG. 7 of the first and second embodiments of the elevator of the present invention.

FIG. 9 is a partial cross-sectional view showing a third embodiment of the elevator according to the present invention.

FIG. 10A is a partial perspective view showing a fourth embodiment of the elevator according to the present invention. (B) is a longitudinal sectional view of (a).

FIG. 11 is a partial perspective view showing an example of a conventional elevator.

FIG. 12 is a partial block diagram showing an example of a conventional elevator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Air flow detector, 2 ... Detection data converter, 3 ... Regulator, 4 ... Computing device, 5 ... Door open information, 6 ... Output data reference table, 7 ... Excitation output device, 8 ... Power supply device, 9A, 9
B, 9D, 9E: electromagnet, 10: excitation output device, 11: central control device, 12: floor data reference table, 13: door control device, 14: door drive motor, 15: car door closing operation confirmation switch, 16 ... iron core, 17 ... coil, 18A, 18B ... protection stand, 19
A, 19B, 19C ... support, 20 ... car, 21 ... car door opening and closing link, 22 ... car door, 23 ... engaging plate, 24 ... landing, 25A, 25
B, 25C, 25D, 25E, 25F, 25G, 25H, 25J ... step, 26 ... hoistway, 27 ... propeller, 28 ... generator, 29 ... rectifier, 30 ... landing door, 31 ... hook, 32 ... weight, 38 ... engaging portion.

Claims (5)

[Claims] An elevator provided with a double-door car door and a landing door, wherein an electromagnet that drives the opening and closing operation of the car door and the landing door in the opening and closing direction by an electromagnetic force between each other,
An elevator, wherein said car door and said landing door are opposed to each other. 2. The landing door according to claim 1, wherein the landing door is provided with an engagement piece for loosely fitting the electromagnet on the car door side with the electromagnet on the landing door side. Elevator. 3. An elevator equipped with a double-door car door and a landing door, wherein the lower end of the landing door and the threshold of the landing door are moved in a direction perpendicular to the threshold with the electromagnetic force between them. An elevator characterized by opposing electromagnets to be driven. 4. An elevator equipped with a double door car door and a landing door, and a weight for the landing door, wherein the landing door is opened and closed by electromagnetic force between the weight and the guide portion of the weight. An elevator characterized in that an electromagnet to be driven is opposed to the other. 5. A detector for detecting a flow velocity of wind passing between a hoistway and a landing, and an arithmetic unit for receiving an output signal of the detector, comparing the output signal with a preset value, and outputting the result. The elevator according to any one of claims 1 to 4, further comprising: an excitation unit to which an operation value output from the operation unit is input and supplies an excitation current to the electromagnet.