JPH09249361A - Door switch cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clean up a door switch automatically without contacting with a point of contact of this door switch by attaching an energizing means expanding or contracting a blowing means to an opening or closing door, and then blowing a blast of air to this door switch. SOLUTION: When both doors 3 are opened, a lever 11 clamped to a hanger 7 of the left door 3 is separated from a small blower 9, extending it in the direction of an arrow A. When both these doors are closed, a tip of the lever 11 presses a rear part of the blower 9, having it compressed, whereby air in this blower 9 is blown into a door switch 5 via a nozzle 10, and each part of the contacts 5a and 5b is blown up with a jet of air. Whit this, any extraneous matter such as abrasive powder and dust or the like stuck to the fixed contact 5a and the short contact 5b of the door switch can be removed away.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door switch cleaning device, and more particularly to a door switch cleaning device suitable for use in, for example, cleaning a door switch used for an entrance door of an elevator.

[0002]

2. Description of the Related Art FIG. 9 is a vertical sectional view showing a hoistway of a general elevator doorway, and FIG. 10 is a rear view of the elevator doorway shown in FIG. In the figure, 1 is an elevator hoistway, 2 is an elevator car that goes up and down along the hoistway 1, 3 is a plurality of doors for the entrance and exit of the elevator, and this door 3 is generally a horizontal pull, here in the center The opening formula is shown. Reference numeral 4 denotes a hanger case to which a door switch, a hanger rail, and the like, which will be described later, are attached, and is provided at an upper edge portion of an elevator doorway 8 on each floor. Reference numeral 5 is a door switch that prevents the elevator from operating unless all the doors 3 on each floor are closed, and is provided above the doorway 8 of the elevator on each floor.

The door switch 5 is provided in the hanger case 4 and has a fixed contact 5a on the fixed side and a door 3 on the right side in the drawing.
10 has a movable-side short-circuit contact 5b attached to the hanger 7, and as shown in FIG. 10, by closing both doors 3, the fixed contact 5a and the short-circuit contact 5b come into contact with each other and become electrically conductive. This information is sent to a control device (not shown), and the car 2 can be moved up and down. Reference numeral 6 denotes a hanger rail which is provided in the hanger case 4 and to which a hanger for suspending the door 3 to be described later is movably attached, and 7 denotes a hanger with rollers for suspending the door 3 on the hanger rail 6.

In such a structure, as the car 2 travels, small dust as shown by the arrow D enters from the gap between the hoistway 1 and the doorway 8 and enters the hanger case 4. Then, the dust that has entered adheres to the fixed contact 5a and the short-circuit contact 5b of the door switch 5 mounted in the hanger case 4 together with the abrasion powder, and if left as it is, an abnormality such as a contact failure of the door switch 5 occurs. Will be attracted. Therefore, conventionally, such a door switch 5
In order to clean and inspect the inside of the vehicle, and to remove and care for the deposits on the contacts 5a and 5b, maintenance personnel carry out regular inspections and maintenance management.

[0005]

However, such periodic inspections and maintenance management require door switches on each floor to be removed because the door switches are in a live hot state during normal operation and maintenance operation work. The power source must be cut off after every maintenance, and thus the work becomes complicated, the work efficiency is very poor, and the maintenance is difficult.

The present invention has been made in order to solve such a problem, and has an excellent workability in that the work can be performed without shutting off the power supply every time the door switch on each floor is cleaned. An object is to provide a door switch cleaning device.

[0007]

According to another aspect of the present invention, there is provided a door switch cleaning device including a blower for blowing a door switch, and a biasing unit attached to a door for opening and closing to expand and contract the blower. Be prepared.

A door switch cleaning device according to a second aspect of the present invention is the door switch cleaning device according to the first aspect of the present invention, wherein the air blowing means is a small blower and the urging means is a lever of a predetermined shape fixed to a hanger of the door. The tip of this lever is brought into contact with a small blower so that the small blower can be expanded and contracted according to opening and closing of the door.

According to another aspect of the present invention, there is provided a door switch cleaning device, which comprises a blowing means for blowing the door switch, and a pressure generating means for generating a pressure according to the traveling wind pressure of the moving body.
And a biasing unit that engages with the blower unit according to the pressure from the pressure generating unit and expands and contracts the blower unit.

A door switch cleaning device according to a fourth aspect of the present invention is the door switch cleaning device according to the third aspect, wherein the blower means is a small blower, and the pressure generating means is provided so as to face the traveling surface of the moving body. A rotating shaft that is composed of a blade plate that generates a pressure in response to the running wind pressure of the body, and rotates the biasing means integrally with the blade plate, an arm attached to one end of the rotating shaft, and an arm that is engaged with the arm. It is composed of a lever pin that comes into contact with a small blower and expands and contracts according to the pressure.

A door switch cleaning device according to a fifth aspect of the present invention is the door switch cleaning device according to the fourth aspect of the invention, wherein the blade plate has an area extending vertically about the rotation axis.

A door switch cleaning device according to a sixth aspect of the present invention is the door switch cleaning device according to the fifth aspect of the invention, wherein the vane plate has a resonance function of increasing the fluctuation with respect to the traveling wind pressure.

According to a seventh aspect of the invention, there is provided the door switch cleaning device according to the sixth aspect, wherein the resonance function is obtained by elastic means provided between the blade plate and the fixing portion.

According to an eighth aspect of the present invention, in the door switch cleaning device of the sixth aspect, the resonance function is obtained by the magnet means provided between the blade plate and the fixed portion so as to face each other. is there.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described with reference to the drawings, taking as an example the case where it is applied to a door switch used for an entrance door of an elevator.

Embodiment 1 FIG. 1 is a configuration diagram showing a first embodiment of the present invention, and FIG. 2 is a side view showing a part of a line I--I cut off. , And the detailed description thereof is omitted. In the figure, reference numeral 9 is a small blower of, for example, a Jarava type as an air blower, which expands and contracts back and forth to exhaust air, and automatically restores when compression is removed. 10 is a small blower 9
The nozzle 11 of the exhaust port is a lever having a predetermined shape as a biasing means, for example, a U-shaped lever. The blower 9 is provided so as to come into contact with the expansion / contraction surface of the blower 9 to compress it.

The lever 11 is set on the hanger 7 at a position slightly before both doors 3 are closed, that is, at a position corresponding to the expansion and contraction allowance of the small blower 9. As a result, the small blower 9 can be expanded / contracted and exhausted as the doors 3 are opened / closed. Reference numeral 12 is a mounting metal fitting for mounting the small blower 9 in the hanger case 4. With this mounting metal fitting 12, the tip of the nozzle 10 of the exhaust port of the small blower 9 aims at the contact points 5a and 5b of the door switch 5. It is fixed in the hanger case 4 as described above.

Next, the operation of the first embodiment will be described with reference to FIG. Now, when both doors 3 are closed from the open state, the fixed contact 5a and the short-circuit contact 5 of the door switch 5 are closed.
When b comes into contact with each other and becomes electrically conductive, this information is sent to a control device (not shown), and the car 2 can be moved up and down.
Further, when both doors 3 are open as shown in FIG. 3, the small blower 9 has a lever 11 fixed to the hanger 7 of the left door 3 apart from the small blower 9 and therefore faces left in the drawing. Although it is extended in the direction of arrow A, when both doors 3 are closed, the tip of the lever 11 pushes the rear part of the small blower 9 accordingly and compresses the small blower 9 in the direction of arrow A pointing to the right in the drawing. Therefore, as a result, the air in the small blower 9 passes through the nozzle 10 and the door switch 5
It is blown out and the contact points 5a and 5b are blown out. As a result, adhering substances such as abrasion powder and dust adhering to the fixed contacts 5a and the short-circuit contacts 5b of the door switch 5 are removed.

As described above, according to the present embodiment, the door switch can be automatically cleaned without substantially contacting the contacts of the door switch as the door of the entrance / exit is opened / closed. Not only during operation but also during maintenance and inspection,
It is not necessary to turn off the power every time the door switch is cleaned, which improves work efficiency. Further, since it is not necessary for maintenance personnel to clean the door switch one by one, maintenance is facilitated and labor can be saved.

Embodiment 2 4 is a perspective view showing a second embodiment of the present invention, and FIG. 5 is a side view thereof. In each drawing, portions corresponding to those in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted. Generally, when the car 2 as a moving body travels, traveling wind pressure is generated on the peripheral wall of the car 2, in particular, in the portion of the gap 1a of the entrance / exit 8, and along with this, a pressure F to the extent that the door 3 is pushed is generated. Therefore, in this embodiment, the pressure based on the traveling wind pressure of the car 2 is used to clean the door switch. In the figure, 13 is a base plate attached to the side wall of the hoistway 1 in the space above the hanger case 4, 14 is fixed to this base plate 13, and a small blower 9 is attached to its lower end 14a. It is a mounting bracket to which the lever pin 15 is mounted on the upper end 14b.

In the small blower 9, the tip of the nozzle 10 of the exhaust port is aimed at the contact points 5a and 5b of the door switch 5 (see FIG. 1), and the lower side of the mounting bracket 14 in the space above the hanger case 4. It is fixed to the end 14a. Also,
As will be described later, the lever pin 15 has its one end (lower end) abutting against the telescopic pushing surface of the small blower 9 by its rotation so as to compress the lever pin 15, and the upper end portion 14b of the mounting member 14 is compressed.
Is provided. The base plate 13 is attached to the hoistway 1
Instead of the side wall, the upper part of the hanger case 4 may be extended to form a flange and attached to this flange portion.

A blade plate 16 is provided in a space above the hanger case 4 so as to face the traveling surface of the car 2, and serves as a pressure generating means for receiving a pressure according to the traveling wind pressure generated while the car 2 is traveling. The vane plate 16 is suspended by a rotary shaft 17 provided at one end of the blade portion 13a of the base plate 13 so as to rotate integrally therewith. An arm 18 having a predetermined shape, for example, an L-shape, is attached to one end of the rotary shaft 17 so as to engage with the other end (upper end) of the lever pin 15.
Therefore, when the arm 18 is rotated, the lever pin 15 is accordingly rotated so as to be pushed, and as a result, the small blower 9 is compressed in the direction of the arrow B. The lever pin 15, the rotary shaft 17, and the arm 18 constitute a biasing means.

Next, the operation of the second embodiment will be described. Now, when the car 2 is in the traveling stopped state, the vane 1
Since 6 does not receive the traveling wind pressure of the car 2 and hangs in the direction perpendicular to the traveling surface of the car 2 as shown by the solid line in FIG. 5, the rotary shaft 17 on which the vane plate 16 is suspended.
Does not rotate, and the arm 18 attached to one end of the rotating shaft 17 also does not rotate. Therefore, in this state, the arm 18 does not engage with the lever pin 15 and the lever pin 15
Does not rotate, the small blower 9 is extended in the direction opposite to the arrow C shown.

On the other hand, when the car 2 is in the running state, the vane plate 16 receives the running wind pressure generated by the running of the car 2, and the pressure F corresponding to the running wind pressure causes the car to move as shown by the two-dot chain line in FIG. Since it is inclined in the opposite direction (inward direction) with respect to the traveling surface of 2, the rotary shaft 17 on which the blade plate 16 is suspended rotates, and the arm 18 attached to one end of the rotary shaft 17 also rotates. . Therefore, in this state, the arm 18 engages with the other end of the lever pin 15, the lever pin 15 rotates, and the one end pushes the rear portion of the small blower 9 to compress the small blower 9 in the direction of arrow C in the figure. As a result, the air in the small blower 9 is blown into the door switch 5 through the nozzle 10 and the contact points 5a and 5b are blown. As a result, adhering substances such as abrasion powder and dust adhering to the fixed contacts 5a and the short-circuit contacts 5b of the door switch 5 are removed.

As described above, in the present embodiment, it is possible to automatically clean the door switch by utilizing the traveling wind pressure during traveling of the car without substantially contacting the contact of the door switch. It is not necessary to shut off the power supply every time the door switch is cleaned, not only during normal operation but also during maintenance and inspection, so that work efficiency can be improved. In addition, since the door switch is cleaned while the car is traveling, cleaning can be performed more efficiently than when the door is opened and closed. Furthermore, maintenance personnel do not need to clean the door switch one by one, which makes maintenance easier.
It can also contribute to labor saving.

Embodiment 3 FIG. 6 is a perspective view showing a third embodiment of the present invention. In the figure, parts corresponding to those in FIG. 4 are designated by the same reference numerals, and detailed description thereof will be omitted. In the present embodiment as well, as in the second embodiment, the door switch is cleaned by using the pressure based on the traveling wind pressure of the car 2, but in the present embodiment, the area of the vane plate that receives the traveling wind pressure. Is a larger one. In the figure, 1
6A is a vane plate which is provided in a space above the hanger case 4 so as to face the traveling surface of the car 2 and serves as a pressure generating means for receiving a pressure according to the traveling wind pressure generated during traveling of the car 2. The vane plate 16A extends in the up-down direction about the rotation shaft 17, and the center part of the vane plate is the wing portion 13 of the base plate 13.
A rotary shaft 17 provided at one end of a is suspended so as to rotate integrally therewith. Other configurations are the same as those in FIG. Moreover, since the operation is similar to that of the second embodiment,
The description is omitted.

Thus, in this embodiment as well, the same effect as in the second embodiment can be obtained, and further, in the present embodiment, the area of the vane plate which receives the traveling wind pressure during traveling of the car is enlarged. Therefore, the running wind pressure is apt to be received, the vibration of the blades becomes active, and the cleaning can be performed more efficiently than in the second embodiment.

Fourth Embodiment 7 is a perspective view showing a fourth embodiment of the present invention, in which FIG. 4 and FIG.
The same reference numerals are given to the portions corresponding to and the detailed description will be omitted. In the present embodiment as well, the door switch is cleaned by using the pressure based on the traveling wind pressure of the car 2 as in the second embodiment. This is a function to which a resonance function is added. In the figure, 19 is a spring as a resonance means, and one end of this spring 19 is fixed to a base plate 13 by a stopper 20 and the other end is a blade plate 16A.
Fixed to Other configurations are the same as those in FIGS. 4 and 6. When the vane plate 16A fluctuates due to the traveling wind pressure of the car 2, the vibrating period is shortened and maintained by the resonance action of the spring 19 and the vane plate 16A. Other operations are similar to those of the second embodiment.

Thus, in the present embodiment as well, the same effect as in the third embodiment can be obtained, and further, in the present embodiment, the vane plate which receives the traveling wind pressure during traveling of the car substantially has a resonance function. Since it is added, the vibrant swing of the vane plate is maintained, and cleaning can be performed more efficiently than in the third embodiment.

Embodiment 5 8 is a perspective view showing a fifth embodiment of the present invention, in which FIG. 4 and FIG.
The same reference numerals are given to the portions corresponding to and the detailed description will be omitted. In the present embodiment as well, as in the second embodiment, the door switch is cleaned by using the pressure based on the traveling wind pressure of the car 2, but in the present embodiment, the blade plate 16A that receives the traveling wind pressure is used. It has an effective resonance function. In the figure, reference numeral 21 denotes a plurality of permanent magnets as magnet means, one of which is fixed to the base plate 13 and the other of which is fixed to the vane plate 16A so as to face the one permanent magnet. Other configurations are the same as those in FIGS. 4 and 6. When the blade plate 16A sways due to the traveling wind pressure of the car 2,
The repulsive force of both permanent magnets 21 promotes the swing thereof, and as a result, the resonance action thereof is maintained.
Other operations are similar to those of the second embodiment.

Thus, in the present embodiment, the same effect as in the third embodiment can be obtained, and further, in the present embodiment, the vane plate which receives the traveling wind pressure while the car is traveling has a substantial resonance function. Since it is added, the vibrant swing of the vane plate is maintained, and cleaning can be performed more efficiently than in the third embodiment. Further, as compared with the fourth embodiment, the resonance action of the blade plate is performed by the permanent magnets in a substantially non-contact manner, so that the damping factor of the vibration is reduced accordingly, and the blade plate shakes more effectively, that is, the small size. The pressure on the blower can be effectively obtained, and the cleaning degree can be improved.

In each of the above embodiments, the case where the present invention is applied to the door switch of the elevator has been described. However, the present invention is not limited to this, and in other cases where such a function is required, for example, a door of a building. It can be similarly applied to the switch (Embodiment 1) and the like, and has the same effect. Further, it is needless to say that the same can be applied to the case where the door of the elevator is one-sided.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of a door switch cleaning device according to the present invention.

FIG. 2 is a side view showing a main part of the first embodiment of the door switch cleaning device according to the present invention.

FIG. 3 is a diagram for explaining the operation of the first embodiment of the door switch cleaning device according to the present invention.

FIG. 4 is a perspective view showing a second embodiment of the door switch cleaning device according to the present invention.

FIG. 5 is a diagram for explaining the operation of the first embodiment of the door switch cleaning device according to the present invention.

FIG. 6 is a perspective view showing a third embodiment of the door switch cleaning device according to the present invention.

FIG. 7 is a perspective view showing a fourth embodiment of the door switch cleaning device according to the present invention.

FIG. 8 is a perspective view showing a fifth embodiment of a door switch cleaning device according to the present invention.

FIG. 9 is a vertical sectional view of a hoistway of a conventional elevator doorway.

FIG. 10 is a rear view of FIG. 9;

[Explanation of symbols]

1 elevator hoistway, 2 elevator car, 3
Doors for doorways, 5 door switches, 7 hangers, 9 small blowers, 10 nozzles, 11 levers, 13 base plates,
15 lever pins, 16, 16A blades, 17 rotating shafts, 18 arms, 19 springs, 21 permanent magnets.

Claims (8)

[Claims] 1. A door switch cleaning device comprising: a blower for blowing a door switch; and a biasing unit attached to an openable / closable door for expanding and contracting the blower. 2. The blower means is a small blower, and the urging means is a lever having a predetermined shape fixed to a hanger of a door, and the tip of the lever is brought into contact with the small blower to remove the small blower. The door switch cleaning device according to claim 1, wherein the door switch cleaning device is adapted to expand and contract according to opening and closing of the door. 3. An air blower for blowing a door switch, a pressure generator for generating a pressure according to a traveling wind pressure of a moving body, and an air blower engaged with the blower according to a pressure from the pressure generator, A door switch cleaning device comprising: an urging means for expanding and contracting the air blowing means. 4. The blower means is a small blower, and the pressure generating means is provided so as to face the traveling surface of the moving body,
A rotary shaft which is composed of a vane plate which receives the traveling wind pressure of the moving body to generate a pressure, and which rotates the biasing means integrally with the vane plate, an arm attached to one end of the rotary shaft, and the arm. 4. The door switch cleaning device according to claim 3, wherein the door switch cleaning device comprises a lever pin that is engaged with and abuts against the small blower to expand and contract the small blower according to the pressure. 5. The door switch cleaning device according to claim 4, wherein the vane plate has an area extending vertically with respect to the rotation axis. 6. The door switch cleaning device according to claim 5, wherein the vane plate has a resonance function of increasing swinging with respect to traveling wind pressure. 7. The door switch cleaning device according to claim 6, wherein the resonance function is obtained by an elastic means provided between the blade plate and the fixing portion. 8. The door switch cleaning device according to claim 6, wherein the resonance function is obtained by magnet means provided so as to face each other between the vane plate and the fixed portion.