CN102020170A - Elevator ventilation device - Google Patents

Abstract

Provided is an elevator ventilation device, which can automatically open and close a ventilation window, and can also reliably lock the ventilation window. The ventilation device for an elevator involved in the present invention is an elevator ventilation device for an elevator with an air pressure control device for controlling the air pressure in the elevator car. Open for ventilation; locking solenoid, which is in the energized state under normal conditions of receiving power supply, and locks the ventilation window opening and closing member in the closed state through the action of its shaft; action switch, which opens and closes the ventilation window After the closing member is closed, the solenoid for locking is energized; the elastic member for unlocking the lock is used to make the shaft of the solenoid for locking retreat when the elevator is powered off; the elastic member for opening the ventilation window is given the force to open the opening and closing member of the ventilation window. Power; the ventilation window closing mechanism closes the ventilation window opening and closing member when it has returned to the normal state.

Description

Elevator Ventilation

technical field

The invention relates to an elevator ventilation device for controlling the air pressure in the elevator car.

Background technique

In recent years, with the development of high-rise buildings, higher requirements for high-speed elevators have been put forward. In the above-mentioned high-speed elevator, in addition to the very large change in air pressure per unit time, the overall air pressure change is large. Under the influence of the large air pressure change, passengers often feel blocked in their ears.

In order to reduce the above-mentioned ear clogging feeling, an air pressure control device that controls the air pressure inside the elevator car based on the air pressure outside the elevator car has been disclosed.

In this air pressure control device, in order to change the air pressure in the elevator car to an optimum state, it is necessary to improve the airtightness of the elevator car.

However, with the improvement of the airtightness of the elevator car, when an abnormal situation such as a power failure occurs, the elevator car cannot be ventilated due to the high airtightness of the elevator car itself, which may result in being closed in the elevator car. Oxygen deprivation among passengers.

Therefore, when the elevator car adopts a highly airtight structure, it is necessary to install a highly safe ventilation device that can automatically open and close when the elevator receives an abnormal signal and the power fails.

As the above-mentioned existing technology of automatically opening the ventilation window during power failure, for example, a ventilation device for an elevator is disclosed in Patent Document 1. During normal operation, the ventilation device of the elevator locks the ventilation window in a closed state through a locking device. In the event of a power outage, the elevator ventilation device opens the ventilation window by means of a weight suspended on the end of a wire rope connected to the ventilation window.

In addition, as an existing technology for automatically closing the ventilation window after the power supply is restored, for example, Patent Document 2 discloses an elevator car that maintains the ventilation window closed by an electromagnet during normal operation. state, after the power supply is restored, the elevator car closes the ventilation window through the motor.

Patent Document 1: Japanese Patent No. 4270812 (paragraph numbers 0028, 0029, FIG. 2, etc.)

Patent Document 2: Japanese Patent Application Laid-Open No. 10-53383 (paragraph numbers 0012 to 0017, FIGS. 2 to 4, etc.)

However, in the elevator with the air pressure control device, since there is an air pressure difference between the inside and outside of the elevator car, in the prior art, the position maintaining mechanism, that is, the electromagnetic The gravity of the iron may cause the ventilation windows to open, necessitating emergency braking of the elevator.

That is, in an elevator in which the air pressure inside the elevator car needs to be controlled, while the airtightness of the elevator car is improved, a power outage may cause oxygen deprivation among passengers in the elevator car.

Therefore, there is a need for a ventilation device that can reliably maintain the airtightness of the elevator car all the time, and can be automatically opened and closed during power failure and power supply recovery.

Contents of the invention

The present invention is made in view of the above-mentioned actual situation, and the object of the present invention is to provide an elevator ventilation device, which can automatically open and close the ventilation window opening and closing member, and can also reliably lock the ventilation window in the closed state. Window opening and closing member.

In order to achieve the above object, the present invention provides an elevator ventilation device. The elevator ventilation device is an elevator ventilation device with an air pressure control device for controlling the air pressure in the elevator car. It has: a ventilation window opening and closing member, and the ventilation window is opened and closed The components are arranged on the elevator car and are opened for ventilation when the elevator is de-energized; the locking solenoid, which is in the energized state under normal conditions of receiving power supply, moves through its shaft to lock the opening and closing member of the ventilation window in the closed state; the action switch, the operation switch energizes the solenoid for locking after the opening and closing member of the ventilation window is closed; the elastic member for locking release, the locking The elastic member for releasing makes the shaft of the solenoid for locking retract when the elevator is powered off; the elastic member for opening the ventilation window applies a force to open the opening and closing member of the ventilation window a ventilation window closing mechanism, when the power supply returns to the normal state, the ventilation window closing mechanism closes the ventilation window opening and closing member.

Invention effect

As described above, according to the present invention, it is possible to provide an elevator ventilation device capable of automatically opening and closing a ventilation window opening and closing member and also reliably locking the closed ventilation window opening and closing member.

Description of drawings

Fig. 1 is a perspective view showing an elevator car having an elevator ventilation device according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view in the direction indicated by arrow A in Fig. 1, showing the internal structure of the elevator ventilation device provided in the elevator car according to the first embodiment.

Fig. 3 is a perspective view showing an elevator car having an elevator ventilation device according to a second embodiment of the present invention.

Fig. 4 is a cross-sectional view in the direction indicated by arrow B in Fig. 3, showing the internal structure of the elevator ventilation device installed in the elevator car.

Symbol Description

1 elevator car

5 elevator doors

7 blower (air pressure control device)

8.30 Elevator ventilation device

10, 23 Locking solenoid

14 Closing solenoid (ventilation window closing solenoid, ventilation window closing mechanism)

11, 28 lock shaft (shaft)

15 solenoid shaft (transfer mechanism, ventilation window closing mechanism)

12, 24 compression spring (elastic member for lock release)

16 compression springs (elastic member for opening the ventilation window)

17, 37 Ventilation window opening and closing components

19, 32 action switch

21 linkage mechanism (transfer mechanism, ventilation window closing mechanism)

25 trapezoidal member (ventilation window closing mechanism, pressed member)

27 rollers (ventilation window closing mechanism, pressing member)

31 torsion coil spring (elastic member for opening the ventilation window)

E, 2E Elevator

Detailed ways

Embodiments of the present invention will be described below with reference to the drawings.

first embodiment

Fig. 1 is a perspective view showing an elevator car 1 having an elevator ventilation device 8 of an elevator E according to a first embodiment of the present invention. However, in the elevator E shown in FIG. 1, illustration of the structure other than the structure demonstrated in this 1st Embodiment is abbreviate|omitted.

The elevator E according to the first embodiment has an elevator car 1 for carrying passengers up and down, and an air blower 7 of an air pressure control device for controlling the air pressure inside the elevator car 1 .

The shape of the elevator car 1 is provided as a long rectangular parallelepiped in the vertical direction, and it has side panels 2 provided in four directions on the sides, a floor 3 supporting the side panels 2 from below, and a ceiling provided on the upper part of the side panels 2. 4 and an elevator door 5 provided on the side panel 2a located on the front side of the elevator car 1 and slidably opened and closed (opened and closed in the direction indicated by arrow γ1 in FIG. 1 ).

In the elevator car 1, the side panel 2, the floor 3, the ceiling 4, the elevator door 5, and the sealing member 6 used to block the gap generated between the elevator door 5 and the side panel 2 when the elevator door 5 is closed, etc. Keep it airtight.

In order to control the internal air pressure of the airtight elevator car 1, a blower 7 that sends the air pressure outside the elevator car 1 to the inside of the elevator car is provided above the ceiling 4, and the blower 7 is used to adjust the air pressure into the elevator car. The air volume of the elevator car 1 controls the internal air pressure of the elevator car 1 .

The side panel 2b of the elevator car 1 is provided with an elevator ventilation device 8 for ventilating the elevator car 1 in an abnormal situation (power failure) where the power supply stops. The elevator ventilation device 8 is covered by a cover 8c.

<Structure of Elevator Ventilation Device 8>

FIG. 2 is a cross-sectional view in the direction indicated by arrow A in FIG. 1, showing the internal structure of the elevator ventilation device 8 installed on the elevator car 1. As shown in FIG. In FIG. 2, the housing 8c of the elevator ventilation device 8 is indicated by a two-dot chain line.

The elevator ventilation device 8 shown in FIG. 2 has a structure for opening and closing the ventilation opening k as the ventilation opening of the elevator car 1 when an abnormal situation (power failure) in which the power supply is cut off occurs. The ventilation window opening and closing member 17 opened and closed by the opening k; the closing solenoid 14 for closing the ventilation window opening and closing member 17; the case 13 for fixing the closing solenoid 14 to the side panel 2b The opening and closing shaft 15, the opening and closing shaft 15 is arranged on the closing solenoid 14, and moves by closing (ON) or disconnecting (OFF) of the attractive force of the solenoid 14 (in Fig. 2 Arrow α2, the direction shown in α3); The link mechanism 21 that makes the opening and closing shaft 15 and the ventilation window opening and closing member 17 linked; And the compression spring 16, the compression spring 16 is arranged on the housing 13 and the opening and closing shaft 15, when the closing solenoid 14 is turned off, the compression spring 16 presses the opening and closing shaft in a direction in which the engaging portion 15a is separated from the housing 13 (pressing in the direction indicated by arrow α2 in FIG. 2 ). 15, so that the ventilation window opening and closing member 17 is opened.

Among them, the link mechanism 21 converts the linear motion of the opening and closing shaft 15 of the closing solenoid 14 into the rotational motion of the ventilation window opening and closing member 17 through a long hole or the like.

The opening and closing shaft 15 moves in the direction shown by the arrow α3 of FIG. 2 under the action of the magnetic force of the electromagnetic induction when the solenoid 14 for closing is turned on (refer to the solid line of FIG. 2 ). When the solenoid 14 is disconnected, the electromagnetic induction disappears, and the opening and closing shaft 15 moves in the direction shown by the arrow α2 in Fig. 2 under the elastic force of the compression spring 16, thereby opening the ventilation window opening and closing member 17 (refer to double dotted line).

The elevator ventilation device 8 has a mechanism for locking the closed state of the ventilation opening k by the ventilation window opening and closing member 17 (closing the ventilation opening k). It is used to lock the closed state of the opening k for ventilation (closing the opening k for ventilation) of the opening and closing member 17 of the ventilation window; the casing 9, which fixes the solenoid 10 for locking on the side panel 2b; The lock shaft 11 locks the ventilation window opening and closing member 17 by the magnetic force of the electromagnetic induction of the locking solenoid 10, and returns the ventilation window opening and closing member 17 to the lock release position when the electromagnetic induction disappears (see FIG. 2 and the compression spring 12, the compression spring 12 is arranged between the housing 9 and the locking shaft 11, and the engaging portion 11a of the locking shaft 11 faces away from the housing 9 (Fig. 2 direction shown by arrow α1), that is, force is applied to the lock shaft 11 in the direction of the lock release position (direction shown by arrow α1 in FIG. .

The elevator ventilation device 8 further has an operation switch 19 .

The operation switch 19 has a switching function, which is used to switch between the power-on function of the locking solenoid 10 that locks the ventilation window opening and closing member 17 in the closed state, the power-off function of the closing solenoid 14, and the unlocking screw function. The solenoid 10 switches between the power-off function of locking the ventilation window opening and closing member 17 and the power-on function of closing the ventilation window opening and closing member 17 with the closing solenoid 14 .

In the above description, the case where the operation switch 19 is positioned above the opening k for ventilation as an example in contact with the louver opening and closing member 17 for closing the louver is described as an example. , then the setting position of the action switch 19 is not limited.

Specifically, the action switch 19 is arranged so that the movable terminal 190 of the action switch 19 is in contact with the terminal 19A in the normal operation after turning on the power supply of the solenoid 14 for closing and closing the ventilation window opening and closing member 17. Thus, the power supply (current 19a) of the solenoid 10 for locking is turned on, and at the same time, the movable terminal 19O is separated from the terminal 19B, thereby turning off the power supply of the solenoid 14 for closing. In the figure, the movable terminal 19O of the action switch 19 is urged toward the direction of contact with the terminal 19B (downward in FIG. 2 ) through the elastic member. .

On the other hand, when an abnormal situation (power failure) occurs, since the power supplied to the locking solenoid 10 via the movable terminal 19O and terminal 19A of the action switch 19 is disconnected, the locking shaft 11 is held by the compression spring 12. Under the action, it moves in the direction indicated by the arrow α1 in FIG. 2 , and the lock shaft 11 retreats to the unlocked position indicated by the two-dot chain line in FIG. 2 . For this reason, the opening and closing shaft 15 moves toward the direction shown by the arrow α2 in FIG. 21, the ventilation window opening and closing member 17 is opened to the open position indicated by the two-dot dash line in FIG. 2 (shown by arrow β1 in FIG. 2 ).

In addition, in the elevator ventilation device 8, the seal 20 is provided on the side panel 2b, and the seal 20 maintains the air between the ventilation window opening and closing member 17 and the side panel 2b when the ventilation window opening and closing member 17 is in the closed state. secret state.

As shown in FIG. 2 , the packing 20 is provided on the side panel 2b, contacts the closed ventilation window opening and closing member 17, and is positioned around the ventilation opening k of the side panel 2b.

Thus, when the louver opening and closing member 17 is in the closed state, the seal 20 is in contact with the peripheral portion of the louver opening and closing member 17, and is placed between the louver opening and closing member 17 and the side panel 2b around the ventilation opening k. Keep the elevator car 1 in an airtight state.

<When supplying power with a normal power supply during normal operation>

In the elevator ventilation device 8, when the normal power supply is used for power supply (receiving power supply) during normal operation, as shown in Figure 2, the movable terminal 19O of the action switch 19 contacts the terminal 19A, and the lock coil is supplied from the normal power supply. Tube 10 supplies power (current 19a of Figure 2). By energizing the locking solenoid 10, the locking shaft 11 is attracted by the locking solenoid 10, moves in the direction shown by the arrow α4 in FIG. The position where the closing member 17 is opposite to each other. Thus, the lock shaft 11 can prevent the opening movement of the ventilation window opening and closing member 17 (movement in the direction indicated by the arrow β1 in FIG. 2 ), and lock the ventilation window opening and closing member 17 in the closed state.

At this time, by separating the movable terminal 19O and the terminal 19B of the operation switch 19 from each other, the power supply to the closing solenoid 14 is cut off, thereby saving power consumption.

In addition, after the closing solenoid 14 is turned off, the force of the closing solenoid 14 for closing the ventilation window opening and closing member 17 disappears, but the opening action of the ventilation window opening and closing member 17 can be prevented due to the locking shaft 11. (Refer to FIG. 2 ), so the ventilation window opening and closing member 17 will not open.

When using a normal power supply for power supply in normal operation, the internal air pressure of the elevator car 1 is controlled by the air blowing of the air blower 7 .

<When an error occurs (during power failure)>

When the normal power supply used during normal operation stops supplying power (during power outage), blower fan 7 stops blowing. Since the elevator car 1 is in an airtight state, the passengers in the elevator car 1 may suffer from hypoxia.

Therefore, the ventilation window opening and closing member 17 of the elevator ventilation device 8 is opened in the following manner to ventilate the elevator car 1 .

When the normal power supply used in normal operation stops supplying power, the movable terminal 19O of the action switch 19 shown in FIG.

After the power supply is turned off, the lock solenoid 10 stops operating, so the engaging portion 11 a of the lock shaft 11 is pressed by the elastic force of the compression spring 12 as shown by the arrow α1 in FIG. 2 . Therefore, the locking shaft 11 retreats in the direction indicated by the arrow α1, so that the closed ventilation window opening and closing member 17 is opened, so that the ventilation window opening and closing member 17 is in an unlocked state.

At this time, since the movable terminal 19O and the terminal 19B of the action switch 19 are in a non-contact state, and the power supply is cut off, no current flows through the closing solenoid 14 . Therefore, the engaging portion 15a of the opening and closing shaft 15 is pressed in the direction indicated by the arrow α2 in FIG. At this time, the opening and closing shaft 15 is linked with the link mechanism 21, so that the ventilation window opening and closing member 17 rotates counterclockwise (the direction shown by the arrow β1 in FIG. 2 ), and the ventilation window opening and closing member 17 is opened (refer to FIG. 2 double dot dash line).

In this way, the ventilation opening k of the elevator car 1 is opened, and the elevator car 1 is ventilated.

<When the normal power supply used in normal operation is restored>

The ventilation window opening and closing member 17 closes the ventilation opening k by the following method after the normal power supply used in normal operation is restored.

When an abnormal situation (power failure) occurs, the movable terminal 19O and terminal 19B of the action switch 19 are in contact because the ventilation window opening and closing member 17 is in an open state (refer to the two-dot chain line in FIG. 2 ). When the power supply is started, the current 19b flows through the movable terminals 19O and 19B of the operation switch 19 to energize the closing solenoid 14 . After the closing solenoid 14 is energized, the opening and closing shaft 15 overcomes the elastic force of the compression spring 16 (the elastic force in the direction shown by the arrow α2 of Fig. 2 ) under the magnetic force of the closing solenoid 14 toward Move in the direction shown by the arrow α3, so that the ventilation window opening and closing member 17 linked with the opening and closing shaft 15 and the link mechanism 21 rotates clockwise (the direction shown by the arrow β2 in FIG. 2 ) to close the opening for ventilation. Part k, in order to block the ventilation opening k (refer to FIG. 2).

After the ventilation opening k is completely closed by the ventilation window opening and closing member 17, the movable terminal 19O of the operation switch 19 is pressed by the ventilation window opening and closing member 17 to contact the terminal 19A (see FIG. 2). At this time, the current 19a flows to the locking solenoid 10 via the movable terminal 19O and the terminal 19A of the operation switch 19, so that the locking solenoid 10 is in an energized state. When the solenoid 10 for locking is energized, a magnetic force is generated, and under the action of the magnetic force, the locking shaft 11 overcomes the elastic force of the compression spring 12 (the elastic force in the direction indicated by the arrow α1 in FIG. 2 ) and moves toward the direction indicated by the arrow α4 in FIG. Direction movement, the ventilation window opening and closing member 17 is locked (see Figure 2).

At this time, the movable terminal 19O and the terminal 19B of the operation switch 19 are in a non-contact state, and since the current 19b no longer flows to the closing solenoid 14, the closing solenoid 14 stops operating. In this way, when the normal power supply is used for power supply during normal operation, the closing solenoid 14 is not energized.

After the normal power supply used during normal operation is restored, the ventilation opening k of the side panel 2b is closed by the ventilation window opening and closing member 17, and the ventilation to the elevator car 1 is stopped when an abnormality occurs.

During normal (normal) operation, even if there is an air pressure difference between the inside and outside of the elevator car 1, it is not necessary to use the operating force of the locking solenoid 10, but the locking shaft 11 can be utilized including its bending rigidity. The rigidity overcomes the elastic force of the compression spring 16, and the ventilation window opening and closing member 17 is maintained in a closed state. That is, during normal operation, the ventilation window opening and closing member 17 provided on the side panel 2b of the elevator car 1 is locked by the rigidity of the locking shaft 11 of the locking solenoid 10 .

When using a normal power supply for power supply during normal operation, the air pressure inside the elevator car 1 is controlled by blowing air from the air blower 7 as described above.

<Function and effect>

According to the above structure, during a power outage, by opening the ventilation window opening and closing member 17 of the elevator ventilation device 8, it is possible to prevent the passengers who are closed in the elevator car 1 from being hypoxic.

On the other hand, after the power supply is restored, the ventilation window opening and closing member 17 can be reset automatically without waiting for maintenance personnel to manually restore, so that the elevator E can be smoothly returned to normal (normal) operation.

In addition, during normal (normal) operation, the ventilation window opening and closing member 17 can be reliably maintained in the closed state without being affected by the air pressure difference between the inside and outside of the elevator car 1 .

2nd embodiment

Hereinafter, an elevator ventilation device 30 according to a second embodiment will be described with reference to FIGS. 3 and 4 .

Fig. 3 is a perspective view showing an elevator car provided with an elevator ventilation device 30 according to a second embodiment of the present invention, and Fig. 4 is a cross-sectional view in the direction indicated by arrow B in Fig. Internal structure of the elevator ventilation system 30 in the car 1.

In the elevator ventilation device 30 of the second embodiment, as shown in FIG. 4, the ventilation window opening and closing member 37 in the closed state is reliably locked by the locking shaft 28, and the opening and closing member 37 in the open state is made by the opening action of the elevator door 5. The ventilation window opening and closing member 37 (refer to the two-dot chain line in FIG. 4 ) of the ventilation window is closed.

As shown in Figure 3, the elevator 2E of the second embodiment is the same as the elevator E of the first embodiment (refer to Figure 1), and has an elevator car 1 for carrying passengers up and down, and four directions on the side. The side panel 2, the floor 3 supporting the side panel 2, the ceiling 4 arranged on the top of the side panel 2, and the elevator door 5, the elevator door 5 is arranged on the front side of the elevator car 1, and can be opened and closed by sliding (in Open and close in the direction shown by the arrow γ2 in Fig. 3). The elevator car 1 maintains its airtightness by the sealing member 6 or the like for closing the gap generated between the elevator door 5 and the side panel 2 when the elevator door 5 is closed.

In order to control the internal air pressure of the highly airtight elevator car 1, a blower 7 that sends the air to the inside of the elevator car 1 is provided above the ceiling 4, and the air blown by the blower 7 is adjusted to be sent into the elevator car. 1 air volume to control the internal air pressure of the elevator car 1.

An elevator ventilation device 30 for ventilating the elevator car 1 is provided on the side panel 2a provided with the elevator door 5 on the front side of the elevator car 1 when an abnormality (power failure) occurs due to a power failure. The elevator ventilation device 30 is covered by a cover 30c. In FIG. 4, the housing 30c of the elevator ventilation device 30 is indicated by a two-dot chain line.

<Structure of Elevator Ventilation Device 30>

The elevator ventilation device 30 has a structure for opening and closing the ventilation opening k (refer to FIG. 4 ) of the elevator car 1, and has a ventilation window opening and closing member 37 for opening and closing the ventilation opening. k; torsion coil spring 31, the torsion coil spring 31 is arranged on the rotating shaft of the ventilation window opening and closing member 37, and is used to apply force to the ventilation window opening and closing member 37, so that the ventilation window opening and closing member 37 opens the ventilation opening k (the direction shown by the arrow β4 of Fig. 4); and seal 29, this seal 29 is arranged on the side panel 2a of front side, is used to keep between the ventilation window opening and closing member 37 and side panel 2a in closed state air tightness.

In addition, the seal 29 is provided around the ventilation opening k (see FIG. 4 ) of the side panel 2a such that the seal 29 is in contact with the peripheral edge of the ventilation window opening and closing member 37 when the ventilation window opening and closing member 37 is in the closed state. The airtightness between the ventilation window opening and closing member 37 and the side panel 2a is maintained.

The ventilation window opening and closing member 37 is provided with a trapezoidal-shaped trapezoidal member 25 used when closing the ventilation window opening and closing member 37 on the rotation shaft side as its one side, and is provided with a lock in the closed state as the front end portion on the other side. The member 26 having the tapered portion 26t is used when the ventilation window opening and closing member 37 is used.

For example, the ventilation window opening and closing member 37 is formed by bending a steel plate, and the trapezoidal member 25 and the member 26 are respectively fixed to the ventilation window opening and closing member 37 by bolts. It is also possible to form the ventilation window opening and closing member 37, the trapezoidal member 25, and the member 26 into an integral structure, or to form an integral structure of any two members in the above-mentioned members, and form the other member into a single structure. The method can be selected appropriately.

The elevator ventilation device 30 has a structure for locking the ventilation window opening and closing member 37 in the closed state. As shown in FIG. The force of locking; Housing 22, this housing 22 fixes locking solenoid 23 on the side panel 2a; Lock shaft 28, this locking shaft 28 is arranged on the locking solenoid 23, and its one end 28a Move between the locked position (refer to the solid line in FIG. 4 ) in contact with the member 26 at the front end of the ventilation window opening and closing member 37 and the unlocked position (refer to the double-dashed line in FIG. 4 ) away from the member 26; The compression spring 24 is arranged between the housing 22 and the lock shaft 28, and acts against the lock shaft toward the direction in which the engaging portion 28b of the lock shaft 28 separates from the housing 22 (direction shown by α6 in FIG. 4 ). The engagement part 28b of 28 exerts force; the action switch 32 is used to energize the locking solenoid 23, thereby locking the ventilation window opening and closing member 37 in the closed state; and the roller 27, which is arranged on The inner side of the elevator door 5 (elevator car 1 side), when the elevator door 5 is opened, the roller 27 abuts against the trapezoidal member 25 of the ventilation window opening and closing member 37 in the open state and presses the trapezoidal member 25, thereby making the ventilation window open. The opening and closing member 37 is closed.

The movable terminal 32O of the action switch 32 is biased by the elastic member in a direction away from the terminal 32A (downward on the paper surface of FIG. 4 ), and power is supplied through an unillustrated connection line during normal operation.

In the above description, the case where the operation switch 32 is located above the ventilation opening k at a position in contact with the closed ventilation window opening and closing member 37 has been described as an example. , then the setting position of the action switch 32 is not limited.

In the elevator ventilation device 30 having the above-mentioned structure, when closing the ventilation window opening and closing member 37 in the open state, the trapezoidal member 25 of the ventilation window opening and closing member 37 in the open state (indicated by a dashed line in FIG. 4 ) is lifted by the elevator. The roller 27 (indicated by a dotted line in FIG. 4 ) performing an opening operation (direction indicated by arrow γ21 in FIG. 4 ) on the door 5 presses, thereby closing the ventilation window opening and closing member 37 .

At this time, after the movable terminal 32O of the action switch 32 is pressed by the ventilation window opening and closing member 37 and contacts the terminal 32A, the normal power used during normal operation supplies power to the locking solenoid 23 through the movable terminal 32O and the terminal 32A. . The locking solenoid 23 is turned on to generate a magnetic force, and the locking shaft 28 advances to the outside of the ventilation window opening and closing member 37 (in the direction shown by arrow α5 in FIG. 4 ) under the action of the magnetic force, and opens with the ventilation window. The tapered portion 26t of the member 26 of the closing member 37 abuts, thereby locking the ventilation window opening and closing member 37 (see FIG. 4 ). As described above, the ventilation window opening and closing member 37 is securely locked by the locking shaft 28 .

The internal air pressure of the elevator car 1 is controlled by the air blowing from the blower 7 when powered by the normal power supply used during normal operation.

The operation of the elevator ventilation device 30 will be described in detail below.

<When the normal power supply used in normal operation stops supplying>

When an abnormal situation occurs and the normal power supply used during normal operation stops supplying power, the blower 7 stops blowing air. Since the elevator car 1 is in an airtight state, it is necessary to avoid the occurrence of oxygen deficiency in the passengers in the elevator car 1.

Therefore, in order to ventilate the elevator car 1, the ventilation window opening and closing member 37 is opened in the following manner.

After the normal power supply is stopped, the movable terminal 32O of the action switch 32 comes into contact with the terminal 32A, so that the power supply (current 32a) of the locking solenoid 23 is cut off.

After the power supply of the locking solenoid 23 is disconnected, the locking shaft 28 moves in the direction shown by the arrow α6 in FIG. locking.

Thereafter, the ventilation window opening and closing member 37 is rotated counterclockwise (direction indicated by arrow β4 in FIG. 4 ) by the elastic force of the torsion coil spring 31, thereby opening the ventilation opening k. The ventilation opening k is opened by the ventilation window opening and closing member 37, so that the elevator car 1 can be ventilated through the ventilation opening k.

<When the normal power supply used in normal operation is restored>

Thereafter, after the normal power supply used during normal operation recovers the power supply, the elevator door 5 is opened once (with reference to the symbol 5 represented by the dotted line among Fig. By contacting and pressing the trapezoidal member 25 in the direction indicated by the arrow γ21 in FIG. 4 , the ventilation window opening and closing member 37 is rotated clockwise (in the direction indicated by the arrow β3 in FIG. 4 ).

After the ventilation window opening and closing member 37 is completely closed, the movable terminal 32O of the operation switch 32 is pressed by the ventilation window opening and closing member 37, and the movable terminal 32O is brought into contact with the terminal 32A.

Thereafter, under the action of the current 32a from the energized movable terminal 320, the locking solenoid 23 becomes an energized state, the locking shaft 28 overcomes the elastic force of the compression spring 24 and moves in the direction shown by the arrow α5 in FIG. One end 28a of 28 abuts against tapered portion 26t of member 26 provided on louver opening/closing member 37, thereby locking louver opening/closing member 37 in the closed state via locking shaft 28.

Here, since the member 26 has the tapered portion 26t formed into a tapered shape, the ventilation window opening and closing member 37 can be further reliably closed by the operating force of the lock shaft 28 in the direction indicated by the arrow α5 in FIG. 4 . .

When the taper portion 26t closes the vent window opening and closing member 37, the packing 29 is compressed, and the vent window opening and closing member 37 is further closed. Therefore, even if the elevator door 5 opens and closes in the direction shown by the arrow γ2 in FIG. 3 , the roller 27 provided on the elevator door 5 will not contact the trapezoidal member 25 of the ventilation window opening and closing member 37 (see FIG. 4 ). .

In addition, during normal (normal) operation, even if there is an air pressure difference between the inside and outside of the elevator car 1, the ventilation window opening and closing member 37 can be maintained in a closed state by rigidity such as bending rigidity of the lock shaft 28, and Operation force by the locking solenoid 23 is not required.

After the normal power outage, when the normal power outage is restored, the elevator 2E stops the elevator car 1 in the direction of travel in the building to the nearest floor, and thereafter opens the elevator doors. By employing the above structure, it is possible to prevent the elevator from traveling a long distance under a large pressure difference in a state where the ventilation window opening and closing member 37 of the elevator ventilation device 30 is opened.

Or, after the normal power failure, when the power supply is restored after the normal power failure, the elevator 2E makes the elevator car 1 travel to the next designated destination floor at a running speed slower than the normal speed, thereby preventing the elevator from being activated by the elevator ventilation device. The vehicle travels in a state where the ventilation window opening and closing member 37 of the vehicle 30 is opened, causing discomfort to the passengers.

<Function and effect>

According to the above-mentioned structure, when a power failure occurs, by opening the ventilation window opening and closing member 37 of the elevator ventilation device 30 to open the ventilation opening k (see FIG. 4 ), it is possible to prevent passengers who are closed in the elevator car 1 from Hypoxia occurs.

On the other hand, after the power supply is restored, the ventilation window opening and closing member 37 can be automatically returned to the closed state without waiting for the maintenance personnel to perform manual restoration, so that the elevator 2E can be smoothly restored to normal operation. In addition, during normal operation, the ventilation window opening and closing member 37 can be reliably maintained in the closed state without being affected by the air pressure difference between the inside and outside of the elevator car 1 .

In the second embodiment, as the ventilation window closing mechanism that closes the ventilation window opening and closing member 37 when returning to the normal state powered by the normal power supply, the roller 27 provided on the elevator door 5 and the opening and closing mechanism provided on the ventilation window are used. The trapezoidal member 25 on the member 37 has been described as an example, but other structures can also be adopted. For example, as a ventilation window closing mechanism, a motor for closing the ventilation window can also be provided and be used to transmit the driving force of the motor to be in an open position. The linkage mechanism that the ventilation window opening and closing member 37 of the state is closed. Thus, the ventilation window closing mechanism is not limited to the roller 27 provided on the elevator door 5 and the trapezoidal member 25 provided on the ventilation window opening and closing member 37 .

In the second embodiment, the case where the roller 27 is provided on the elevator door 5 as the pressing member has been described as an example. However, a freely rotatable member other than the roller 27 may be provided as the pressing member, or the pressing member may be lubricated by smearing. A fixing member other than the roller 27 is used as the pressing member without using oil or the like, and the pressing member is not limited to the roller 27 .

In addition, as the pressed member provided on the ventilation window opening and closing member 37, the trapezoidal member 25 has been described as an example, but the pressed member provided on the ventilation window opening and closing member 37 can also be used instead of a roller or can The freely rotatable member is provided as a fixed member by exemplifying a roller of a pressing member provided on the elevator door 5 .

Alternatively, both the pressed member provided on the ventilation window opening and closing member 37 and the pressing member provided on the elevator door 5 may be freely rotatable members such as rollers.

In the first and second embodiments, the case where the ventilation opening k and the elevator ventilation devices 8, 30 are provided on the side panel 2 has been described as an example, but the ventilation opening k and the elevator ventilation devices 8, 30 It may also be installed on the ceiling 4 instead of the side panel 2 . In addition, by providing a safety cover with a high safety factor, it is also possible to install the ventilation opening k and the elevator ventilation devices 8 and 30 on the floor 3 .

<Summary>

The elevator ventilation device 8, 30 shown in Fig. 2 and Fig. 4 has: opening k for ventilation, and this opening k for ventilation is arranged on the side panel 2 or the ceiling 4 etc. of elevator car 1; , 37, the ventilation window opening and closing members 17, 37 are used to open and close the ventilation opening k; seals 20, 29, the sealing members 20, 29 are arranged to be in the closed state with the ventilation window opening and closing members 17, 37 contact with the peripheral part; locking solenoids 10, 23, the locking solenoids 10, 23 are arranged on the opening and closing part side of the ventilation window opening and closing members 17, 37; compression springs 12, 24, the compression springs 12, 24 is used to reset the ventilation window opening and closing member 17, 37 to the lock release position; the operation switch 19, 32 of the solenoid 10, 23 for locking; The solenoid 14 and the compression spring 16 (first embodiment) or the torsion coil spring 31 (second embodiment) are used.

In addition, the extension direction of the shaft (lock shaft 11, 28) of the locking solenoid 10, 23 provided on the opening and closing portion side of the ventilation window opening and closing member 17, 37 is set to be aligned with the ventilation window opening and closing member 17, 37. The opening and closing directions intersect (such as vertical intersection, etc.).

And, the spring (compression spring 16 (compression spring 16) (see FIG. ) or torsion coil spring 31 (refer to FIG. 4 of the second embodiment)) and the force to open the ventilation window caused by the air pressure difference between the inside and outside of the elevator car 1, thereby locking the ventilation window opening and closing member 17, 37.

When an abnormal situation such as a normal power failure occurs, the power supply of the locking solenoids 10, 23 on the side of the opening and closing parts of the ventilation window opening and closing members 17, 37 is cut off, and the locking solenoids 10, 23 The lock shafts 11, 28, which are the shafts, retreat under the elastic force of the compression springs 12, 24 (see FIG. 2, FIG. 4), and the lock of the ventilation window opening and closing members 17, 37 is released.

Thereafter, the springs (compression spring 16 (see FIG. 2 of the first embodiment) and torsion coil spring 31 (see FIG. 4 of the second embodiment)) provided on the rotation shaft side of the ventilation window opening and closing members 17 and 37 The elastic force makes the ventilation window opening and closing members 17, 37 open.

After the power supply is restored, the closing solenoid 14 provided on the side of the rotation shaft of the ventilation window opening and closing members 17, 37 is energized (the first embodiment) or the elevator door 5 with the roller 27 is opened (the second embodiment). In the embodiment), the ventilation window opening and closing members 17, 37 are closed against the elastic force of the spring (compression spring 16 or torsion coil spring 31) provided on the rotation shaft of the ventilation window opening and closing members 17, 37.

When the ventilation window opening and closing member 17, 37 is closed to the normal position, the ventilation window opening and closing member 17, 37 presses the movable terminal 19O, 32O of the action switch 19, 32, making it contact with the terminal 19A, 32A, so that the locking function The solenoids 10, 23 are energized. By turning on the solenoids 10, 23 for locking, the shafts of the solenoids 10, 23 for locking, that is, the locking shafts 11, 28 advance, thereby releasing the lock of the ventilation window opening and closing members 17, 37 (see FIGS. 2 and 4 ). ).

<Function and effect>

According to the above configuration, the ventilation window opening and closing members 17, 37 are automatically opened and closed at the time of a power failure and at the time of restoration (when the normal power supply used in normal operation is supplied).

During normal (normal) operation, by locking the shafts 11, 28, the ventilation window opening and closing members 17, 37 can be reliably operated without being affected by the air pressure difference between the inside and outside of the elevator car 1. locking.

In addition, since the ventilation window opening and closing members 17, 37 are in the closed state, except for the locking solenoids 10, 23, the other parts are not energized, so power consumption can be saved.

In the first and second embodiments, the compression springs 12 and 24 are used as an example of the elastic member for unlocking the lock shafts 11 and 28 when the lock solenoids 10 and 23 are not energized. For the sake of explanation, the elastic members for unlocking are not limited to compression springs, as long as the locking shafts 11, 28 can be reset when the locking solenoids 10, 23 are not energized, other than the compression springs 12, 24 can also be used. Tension springs and torsion coil springs are used as elastic members for lock release.

As the opening elastic member for opening the ventilation window opening and closing members 17, 37, the compression spring 16 was described as an example in the first embodiment, and the torsion coil spring 31 was described as an example in the second embodiment. However, as long as the force to open the ventilation window opening and closing members 17, 37 can be given, tension springs other than the compression spring 16 and the torsion coil spring 31 can also be used, and the elastic members for opening are not limited to compression springs and torsion coil springs. .

In the first and second embodiments, the case where the locking shafts 11, 28 are arranged perpendicular to the opening and closing direction of the ventilation window opening and closing members 17, 37 has been described as an example, but the locking shafts 11, 28 As long as they intersect with the opening and closing directions of the ventilation window opening and closing members 17 and 37 , it is not necessarily limited to the case where the locking shafts 11 and 28 are perpendicular to the opening and closing directions of the ventilation window opening and closing members 17 and 37 .

In addition, in the above-mentioned first and second embodiments, as the operation switches 19 and 32, contact switches have been described as examples, but non-contact switches such as magnetic switches, capacitive switches, and optical switches may also be used. , as long as the above functions can be realized, the action switches 19, 32 are not particularly limited, and appropriate action switches can be selected.

Claims (8)

1. A ventilation device for an elevator, which has an air pressure control device for controlling the air pressure in the elevator car, is characterized in that it has: A ventilation window opening and closing member, the ventilation window opening and closing member is arranged on the elevator car, and is opened for ventilation when the elevator is powered off; a locking solenoid that is in an energized state when receiving power normally, and locks the ventilation window opening and closing member in a closed state through the movement of its shaft; an action switch that energizes the locking solenoid after the ventilation window opening and closing member is closed; an elastic member for unlocking that retracts the shaft of the solenoid for locking when the elevator is powered off; an elastic member for opening the ventilation window, the elastic member for opening the ventilation window imparts a force to open the opening and closing member of the ventilation window; The ventilation window closing mechanism closes the ventilation window opening and closing member when the power supply returns to the normal state. 2. The elevator ventilation device according to claim 1, characterized in that, The ventilation window closing mechanism has a transmission mechanism and a solenoid for closing the ventilation window. The closing force of the window opening and closing member. 3. The elevator ventilation device according to claim 1, characterized in that, The elastic member for opening the ventilation window is a compression spring. 4. The elevator ventilation device according to claim 1, characterized in that, The extending direction of the shaft of the locking solenoid is set to intersect with the opening and closing direction of the ventilation window opening and closing member, and the elasticity of the opening of the ventilation window is prevented by the rigidity of the shaft of the locking solenoid. A member opens the ventilation window opening and closing member, thereby locking the ventilation window opening and closing member. 5. The elevator ventilation device according to claim 1, characterized in that, The ventilation window closing mechanism has: a pressing member, the pressing member is arranged on the elevator door, and when the power supply returns to the normal state, as the elevator door is opened, the pressing member presses a part of the ventilation window opening and closing member, thereby closing the ventilation window opening and closing member; A pressed member, the pressed member is arranged on the opening and closing member of the ventilation window, and when the power supply returns to the normal state, the pressed member is pressed by the pressing member, so that the ventilation The window opening and closing member is closed. 6. The elevator ventilation device according to claim 5, characterized in that, The pressing member of the elevator door is a roller. 7. The elevator ventilation device according to claim 5, characterized in that, The elastic member for opening the ventilation window is a torsion coil spring. 8. The elevator ventilation device according to any one of claims 1 to 7, characterized in that, The elastic member for unlocking is a compression spring.

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