JP6874880B1 - Elevator with door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator provided with a door device capable of ensuring airtightness between a car sill and a card a when raising and lowering a car and securing a gap between the car sill and the card a when opening and closing a door.
SOLUTION: An elevator provided with a door device 10 of the present invention includes a carda main body 12 which is suspended and supported by a car and can be opened and closed by sliding, and a carda 11 including a door shoe 13 provided at the lower end of the carda main body. An elevator equipped with a door device having a car sill 20 having a threshold groove 21 into which the door shoe is slidably fitted, and a sill bracket 30 attached to a platform 50 on which a user rides and provided with the car sill. The car sill and the sill bracket are connected by an elevating means 40, and the elevating means moves the car sill upward to bring the card door and the car sill into airtight contact.
[Selection diagram] Fig. 3

Description

The present invention relates to an elevator provided with a door device capable of increasing the airtightness in the car, and more specifically, to an elevator having improved airtightness between the car sill and the cardua.

In recent years, with the increase in the height of buildings, various high-speed elevators that raise and lower the car at a speed of several hundred meters per minute have been proposed. In this type of elevator, the air pressure inside the car is adjusted by using a pressure adjusting device such as a blower that sucks and exhausts the inside of the car so that the passengers do not feel uncomfortable due to a sudden change in air pressure during ascending and descending.

In order to control the air pressure inside the car to the optimum state, it is necessary to improve the airtightness of the car. Therefore, airtightness is also required for the card a that the user gets on and off. For example, in Patent Document 1, a sliding member slidable in a sill groove formed in a car sill is arranged at the lower end of the card door, and the sill and the sliding member are brought into sliding contact with each other when the card door is opened and closed to improve airtightness. The secured door device is disclosed.

Japanese Unexamined Patent Publication No. 2004-323222

However, since the sliding contact member is in sliding contact with the threshold groove even when the slide of the card is opened and closed, wear may progress and the airtightness may be lowered. In addition, the sliding contact member is in sliding contact with the threshold groove even when the card door is opened and closed, so that an excessive torque is required for the door drive device.

An object of the present invention is to provide an elevator equipped with a door device capable of ensuring airtightness between the car sill and the card a when raising and lowering a car, and ensuring a gap between the car sill and the card a when opening and closing the door.

The elevator equipped with the door device of the present invention
A card a main body that is suspended and supported by a basket and can be opened and closed by sliding, and a card a that has a door shoe provided at the lower end of the card a main body.
A car sill with a sill groove into which the door shoe can be slidably fitted,
A sill bracket that is attached to the platform on which the user rides and is provided with the car sill,
It is an elevator equipped with a door device that has
The car sill and the sill bracket are connected by an elevating means, and the elevating means moves the car sill upward to bring the cardua and the car sill into airtight contact.

It is desirable that the elevating means bring the lower end of the card a into airtight contact with the car sill.

The elevating means can airtightly bring the door shoe and the threshold groove into contact with each other.

The elevating means may be configured to move the car sill upward while the car is elevating and descending.

The car sill and the sill bracket may be configured to be in airtight contact with each other via a sliding member.

The car sill may be configured to be in airtight contact with the sill bracket when moved upward.

In the elevator equipped with the door device of the present invention, the car sill is arranged so as to be vertically movable by the elevating means, so that the car sill can be moved upward to bring the car sill into contact with the car sill to ensure airtightness. On the other hand, when opening and closing the door, the card door can be smoothly opened and closed by moving the car sill downward to separate the card door from the car sill.

FIG. 1 is a front view showing a main structure of a car card and a car sill having a door device of the present invention. FIG. 2 is a right side view of FIG. FIG. 3 is an enlarged view of the frame-enclosed portion A of FIG. 2, which is a cross-sectional view of the first embodiment showing a state in which the car sill is moved downward. FIG. 4 is an enlarged view of the frame-enclosed portion A of FIG. 2, which is a cross-sectional view of the first embodiment showing a state in which the car sill is moved upward. FIG. 5 is an enlarged view of the frame-enclosed portion A of FIG. 2, which is a cross-sectional view of a second embodiment showing a state in which the car sill is moved downward. FIG. 6 is an enlarged view of the frame-enclosed portion A of FIG. 2, which is a cross-sectional view of a second embodiment showing a state in which the car sill is moved upward.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a view of the lower edge side of the car sill 11 of the elevator car and the vicinity of the car sill 20 from the inside of the tower, and is a front view of the door device 10 including the card sill 11, the car sill 20 and the sill bracket 30. Further, FIG. 2 is a right side view of FIG. In the illustrated embodiment, the number of the car 11 is four, and the car is formed with an opening having an entrance width E that serves as a passage for the user to get on and off the car by sliding the card a11. .. The inside of the car is a space wider than the entrance width E.

The card a 11 has a plate-shaped card a main body 12 that opens and closes when a user gets on and off the car, and a door shoe 13 that protrudes from the lower end of the card a main body 12 as shown in FIG. The card door main body 12 is suspended and supported by the lintel of the car, and can be opened and closed by a door drive device (not shown). Doors on the landing side are arranged on each floor of the building, and the doors on the landing side also open and close in conjunction with the card a11.

The sill bracket 30 is continuously formed on the frame of the car and supports the car sill 20 described below. In the illustrated embodiment, the sill bracket 30 is made of a steel plate whose upper edge is bent toward the outside of the car.

The car sill 20 is arranged on a sill bracket 30 fixed to the frame of the car. As shown in FIG. 2, the sill groove 21 is recessed in the car sill 20 along the opening / closing direction of the carda 11, and the sill groove 21 guides the door shoe 13 so that the carda main body 12 is opened / closed when the carda 11 is opened / closed. Prevents the back and forth movement of. In the figure, the threshold grooves 21 are formed in two rows.

In the present invention, the car sill 20 is supported by the sill bracket 30 via an elevating means 40 so that when the card a 11 is opened and closed, the card a main body 12 and the door shoe 13 are in a floating state with respect to the car sill 20. When the car moves up and down with a gap G, the car sill 20 comes into close contact with the card a main body 12 and / or the door shoe 13 to eliminate the gap G between the card a 11 and the car sill 20 to ensure airtightness. I am trying to do it.

For example, the elevating means 40 can be configured to include an actuator such as a ball screw 41 or a cylinder. In the illustrated embodiment, the elevating means 40 is a ball screw 41, and is configured by mounting a nut 44 containing a ball on a screw shaft 43 rotated by a motor 42. The motor 42 is attached to the sill bracket 30 so that the screw shaft 43 faces vertically, and the nut 44 is connected to the car sill 20 via the bracket 45. However, by driving the motor 42, the screw shaft 43 is rotated, and the nut 44 is moved up and down by the screw thrust. As a result, the car sill 20 connected to the nut 44 also moves up and down.

The elevating means 40 is installed inside the edge of the car sill 20 (car sill line L) as shown in FIG. 2 so as not to hinder the car running.

In the door device 10 having the above configuration, the car sill 20 is in close contact with the normal position (see FIGS. 2 and 3) that allows the opening and closing of the card a 11 and the car sill 20 that moves upward from the normal position and airtightly adheres to the card a 11. It moves back and forth between the position (see FIG. 4).

2 and 3 show normal positions, and a gap G (see FIG. 3) is formed between the carda main body 12 and the door shoe 13 with the car sill 20. The gap G has a height of about 3 mm to 7 mm, preferably about 5 mm. As a result, the cardua main body 12 can slide smoothly with respect to the car sill 20. Further, the car sill 20 is position-adjusted so as to be flush with the platform 50, which is the floor surface of the car, so that the user can be prevented from stumbling.

On the other hand, FIG. 4 shows the close contact position. The movement of the car sill 20 to the close contact position is performed by rotating the motor 42 of the elevating means 40 in a predetermined direction and moving the nut 44 upward by the screw thrust as shown by the arrow in FIG. The car sill 20 is moved upward as shown by an arrow in the figure, and in the illustrated embodiment, the upper surface of the car sill 20 is in close contact with the lower end of the card a main body 12 without a gap, and airtightness can be ensured. You can see that. Of course, the door shoe 13 may be in close contact with the threshold groove 21, and in this case, the door shoe 13 is formed over the entire lower end of the card door main body 12.

The timing of bringing the car sill 20 into close contact with the card a 11 can be, for example, during the start of the elevator (raising and lowering the car) after the door is closed. For example, the car sill 20 can be moved to the close contact position at the timing when the door closing detection sensor detects the door closing. As a result, while the car is being raised and lowered, the car sill 20 and the card a 11 can be brought into close contact with each other to improve the airtightness inside the car.

The timing for moving the car sill 20 from the close contact position to the normal position can be from the time when the car has landed to the time when the door is opened. For example, the movement of the car sill 20 to the normal position may be performed at the timing when the sensor detects the landing of the car. Specifically, the motor 42 is rotated in the reverse direction, and the nut 44 is moved downward as shown by the arrow in FIG. As a result, the car sill 20 descends as shown by an arrow in the figure. By forming a gap G between the car sill 20 and the card a 11, the card a 11 can slide smoothly with respect to the car sill 20. Further, since the car sill 20 descends and becomes flush with the platform 50, it does not hinder the user getting on and off.

With the above configuration, the car can be airtightly closed while the car is being raised and lowered with the card a 11 and the car sill 20 in close contact with each other without a gap. On the other hand, as a result of the car sill 20 being arranged so as to be vertically movable with respect to the sill bracket 30 and the platform 50, a gap may be formed between the car sill 20 and the sill bracket 30 or the platform 50, and the airtightness may be lowered. .. Therefore, it is necessary to ensure airtightness between the car sill 20 and the sill bracket 30 or the platform 50.

Therefore, as shown in FIGS. 3 and 4, a sliding member 52 having a small friction coefficient such as a resin material or a sliding tape is installed on the sliding surface between the car sill 20 and the sill bracket 30 or the platform 50. As a result, the car sill 20 can be smoothly moved while ensuring the adhesion C1 between the car sill 20 and the sill bracket 30 or the platform 50 to improve the airtightness. In the illustrated embodiment, a recess 51 is provided at the front end of the upper edge of the platform 50, and a sliding member 52 is installed in the recess 51. The sliding member 52 may be installed for at least the entire length of the inlet width E shown in FIG. Of course, the sliding member 52 may be partially or wholly installed on the sill bracket 30.

Further, as shown in FIGS. 5 and 6, the car sill 20 and the sill bracket 30 are configured to be pressed against the sill bracket 30 or the platform 50 via an airtight member 54 such as rubber when the car sill 20 is raised. Alternatively, airtightness with the platform 50 can be ensured. In the illustrated embodiment, the car sill 20 is formed with a ridge 22 toward the platform 50, and the platform 50 is formed with a notch 53 into which the ridge 22 can be moved up and down, and the upper surface of the ridge 22 or the upper surface of the ridge 22 is formed. An airtight member 54 is installed on the ceiling surface of the notch 53. As a result, when the car sill 20 is raised, the ridge 22 and the notch 53 are airtightly brought into close contact with each other C2 via the airtight member 54. In the present embodiment, the airtight member 54 is pressed by the ridge 22 or the notch 53 to ensure the airtightness. Therefore, as shown in FIGS. 5 and 6, the movable gap G2 between the car sill 20 and the platform 50 Can be provided. That is, there is no wear because it is not a structure that slides in contact with each other as shown in FIGS. 3 and 4, and there is an advantage that it is easy to secure airtightness because it is a structure that presses and adheres to C2. Can be secured. The ridge 22 and the notch 53 are formed to have a length E1 that exceeds the entrance width E shown in FIG. 1, and the airtight member 54 is also installed for a length extending over the entire length of the ridge 22 and the notch 53 to achieve airtightness. Can be further enhanced. Of course, the notch 53 may be partially or wholly formed in the sill bracket 30. Further, the car sill 20 may be provided with a notch 53, and the sill bracket 30 or the platform 50 may be provided with a ridge 22.

According to the present invention, the airtightness of the cardua 11 and the car sill 20 can be ensured while the car is being raised and lowered, and the air pressure in the car can be adjusted by the air pressure adjusting mechanism. Further, when opening and closing the card a 11, the card a 11 can be smoothly slid by securing a gap G between the card a 11 and the car sill 20, and the load on the door driving device can be suppressed.

The above description is for explaining the present invention, and should not be construed as limiting or limiting the scope of the invention described in the claims. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

For example, the elevating means 40 is not limited to the above embodiment, and may be configured by using a ball screw 41, an actuator, a link mechanism, or the like. Further, the airtightness effect can be further enhanced by installing an airtight member such as rubber at the contact portion between the carcil 20 and the cardua 11 which are brought into close contact with each other as the carcil 20 rises.

10 Door device 11 Card A 12 Card A Main body 13 Door shoe 20 Car sill 21 Shikii groove 30 Sill bracket 40 Lifting means

Claims (6)

A card a main body that is suspended and supported by a basket and can be opened and closed by sliding, and a card a that has a door shoe provided at the lower end of the card a main body.
A car sill with a sill groove into which the door shoe can be slidably fitted,
A sill bracket that is attached to the platform on which the user rides and is provided with the car sill,
It is an elevator equipped with a door device that has
The car sill and the sill bracket are connected by an elevating means, and the elevating means moves the car sill upward to bring the cardua and the car sill into airtight contact.
An elevator equipped with a door device. The elevating means brings the lower end of the card a into airtight contact with the car sill.
An elevator equipped with the door device according to claim 1. The elevating means airtightly brings the door shoe and the threshold groove into contact with each other.
An elevator equipped with the door device according to claim 1. The elevating means moves the car sill upward while the car moves up and down.
An elevator equipped with the door device according to any one of claims 1 to 3. The car sill and the sill bracket or the platform are in airtight contact via a sliding member.
An elevator equipped with the door device according to any one of claims 1 to 4. The car sill is in airtight contact with the sill bracket or platform when moving upwards.
An elevator equipped with the door device according to any one of claims 1 to 4.

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