JP3306247B2 - elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator, and more particularly to an elevator capable of loading and unloading a load when a landing door and a car entrance face each other.

[0002]

2. Description of the Related Art An elevator is a device that carries a load and moves up and down a hoistway. Here, first, the structure of the most general conventional elevator will be described.

FIG. 11 is a configuration diagram showing the vicinity of a car and a landing of a conventional elevator. As shown in the figure, the elevator car 10 is suspended from a rope 31 via a rope stopper 32. A weight (not shown) is connected to the other end of the rope 31, and this weight is a weight rail 3.
Go up and down along 6. A car door 2 is provided at an entrance of the car 10, and the car door 2 has a projection 2a for engaging with a landing door as described later. The car door 2 is laterally pulled by the car door driving device 3 and is opened and closed.

On the other hand, a landing door 17 is provided on the side of the landing 18. The landing door 17 is provided with a landing-side engaging body 21 that engages with the above-described protrusion 2a. The entire hoistway is formed by the outer wall 19.

The operation of the elevator having the above configuration will be described.

Now, it is assumed that the car 10 is descending in FIG. 11 and is on the verge of landing on the landing 18. In the state where the landing is completed and the car 10 is stopped, the projection 2
a engages with the landing-side engaging body 21. When the car door driving device 3 opens the car door 2 at this position, the landing-side engaging body 21 engaged with the projection 2a is also laterally pulled in conjunction with it, and the landing door 17 is also opened. When closing, consider the reverse operation.

[0007]

The above is the most general elevator, but the following problems may occur in this elevator.

(1) Maintenance of the car door 2 In this elevator, a door is required not only on the landing side but also on the car side. Since the door slides on the sill, it is necessary to consider a failure due to aging or a failure due to clogging of foreign matter. In particular, regarding the car door 2, at the time of cleaning or the like, it is necessary to fix the car 10 at a predetermined height in advance, open the car door 2, and further open the landing door 17, which requires a large number of work steps. In addition, as the car 10 moves up and down, a relatively large amount of dust adheres around the car door driving device 3 and the car door 2, and a failure due to the dust may occur.

(2) Soundproofing In the conventional elevator, since the outside of the car 10 immediately becomes a hoistway space, especially in a high-speed elevator, wind noise and running noise have become a problem.

[Object of the present invention] The present invention has been made in view of the above problems, and the objects thereof are as follows.

(1) A double structure consisting of an inner car and an outer car is adopted to enhance soundproofing, and (2) the car door 2 is substituted by the relative movement of the two car openings to reduce maintenance work. .

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, an elevator according to the present invention provides an inner car that provides a space for loading a load and an inner car that is slidably accommodated therein. The outer car, the driving means for driving the sliding of the inner car, and the inner car from the bottom of the outer car by the repulsive force of the electromagnet
Magnetic levitation means for levitating and smoothing the inner car
And wherein the inner car and the outer car each have an opening, and these two openings are placed at positions facing each other only when a person loads or disembarks.

According to the present invention, the inner car and the outer car are both cylindrical, and the driving means drives the inner car to rotate inside the outer car.

Further, the present invention provides a prohibition for preventing the inner car from sliding, so that the two openings are not located at positions facing each other, except when the elevator is stopped upon landing on an arbitrary floor. Means.

Further, the present invention includes a landing door opening / closing means for opening / closing a landing side door in accordance with the sliding of the inner car.

[0016]

According to the present invention having the above structure, the inner car slides inside the outer car. When the openings provided in the inner car and the outer car are placed at opposing positions, a doorway of the car is formed.

Further, according to the present invention, since the inner car and the outer car are both cylindrical, the inner car is rotationally driven to form the entrance of the car.

Further, according to the present invention, sliding of the inner car is prohibited except when the elevator is landing on an arbitrary floor and stopped, that is, when there is a possibility that the elevator may go up and down.

According to the present invention, when the inner car slides, the landing-side door is opened and closed according to the sliding.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Basic Configuration Example Here, a preferred basic configuration example of the present invention will be described with reference to the drawings as appropriate.

FIG. 1 is a configuration diagram showing the vicinity of a car and a landing of an elevator according to the basic configuration example . In the figure, the same components as those of FIG. 11 are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in this figure, the feature of this basic configuration example is that the car has a double structure. That is, the car is composed of an inner car 11 and an outer car 14 that accommodates the inner car. The inner car 11 has an opening 12 and the outer car 14 has an opening 15. The inner car 11 and the outer car 14 are both cylindrical in shape, and the inner car 11 is rotatable about the center axis of the outer car 14. The inner car rotating shaft 24 serving as a rotating shaft is loosely fitted to a rotating bearing 24 a provided on the outer car 14.

On the other hand, below the inner car 11, there is a structure necessary for rotating the inner car 11. First,
A driving device 29 for rotating the inner car 11 rotationally drives a cylindrical follower provided at a lower center portion of the inner car 11 via a drive belt 30. In order to smooth this rotation, a plurality of moving rollers 28
Is provided. The moving roller 28 moves on a roller receiver 34.

Next, the configuration near the car entrance will be described.

In this basic configuration example , there is no car door.
That is, only when the opening 12 and the opening 15 are located opposite each other, this serves as an entrance. In the present basic configuration example , since the inner car 11 is configured to rotate, the inner car 11 is provided with a protrusion 20 to open and close the landing door 17 in conjunction with the movement of the inner car 11. The projection 20 corresponds to the projection 2a in FIG. 11, and opens and closes the landing door 17 by engaging with the landing-side engaging body 21.

The operation of the elevator having the above configuration is shown in FIG.
This will be described with reference to FIG. FIG. 2 is a sectional view of the structure of FIG. 1 taken along the line AA in FIG.

In FIG. 2, the doorway of the elevator is open. That is, the inner car 11 is rotated to the position shown in the figure, the opening 12 and the opening 15 face each other, and an entrance is formed here. On the other hand, the landing door 17 is also open from the projection 20 at the position shown in FIG. In this state, loading and unloading of the cargo becomes possible, which is recognized only when the car 10 has landed on a predetermined floor.

FIG. 3 is a sectional view taken along the line AA of FIG. 1, as in FIG. However, FIG. 3 shows a state in which the entrance / exit is closed by the completion of the loading / unloading of the cargo in FIG. 2 and the rotation of the inner car 11. That is, the inner car 10 rotates a predetermined angle counterclockwise from the position shown in FIG. 2 in the same figure, the opening 12 and the opening 15 no longer face each other, and the entrance is closed. At this time, at the same time, the landing door 17 is also closed because the projection 20 rotates the landing-side engaging body 21 by the same angle in the same direction. When the landing door 17 is completely closed, the operation of the elevator is permitted. In the same figure, the opening 15 is provided with a notch 15a for accommodating the projection 20 when the entrance is in a closed state.

FIG. 4 is a perspective view of the entire elevator car according to the basic configuration example . As can be seen from the figure, the opening 15 of the outer car 14 always faces the landing door 17, but the opening 12 of the inner car 11 rotates and the entrance is closed.

Next, the manner in which the inner car 11 is driven to rotate will be described.

FIG. 5 is a sectional view when the structure of FIG. 1 is cut along the line CC. In this figure, the landing door 17 is in an open state, and a state in which the loading and unloading of the cargo is possible is shown. Therefore, 4
Each of the plurality of movable rollers 28 is provided with a roller receiver 34.
In the upper part, it exists at the position moved most clockwise. To close the landing door 17, the driving device 29
Thus, the inner car 11 may be rotated counterclockwise by a predetermined angle. At this time, the four moving rollers 28 also move on the roller receiver 34 in the counterclockwise direction.

Once the door is closed, the operation of the elevator can be started. However, a circuit for fixing the position of the inner car 11 is required so that the doorway does not open during operation. The brake 38 shown in FIG. 5 is a member provided for this consideration. The operation of the brake 38 is shown in FIG.
It will be explained by.

FIG. 6 shows a configuration for controlling the rotation of the inner car 11 in this basic configuration example . As shown in FIG.
The rotation control unit 40 issues a drive permission to the drive device 29 and a braking instruction to the brake 38.

The rotation control unit 40 refers to the call signal 41, the landing stop signal 42, and the open / close detection signal 43. The call signal 41 is a signal of a call switch provided in the hall 18, and is a signal indicating a floor at which the elevator should stop. The landing stop signal 42 is a signal indicating that the car has landed on the desired floor and stopped. On the other hand, the open / close detection signal 43 is a signal that becomes significant when the landing door 17 is completely closed. Therefore, the rotation control unit 40 can determine the timing at which the driving permission and the braking instruction should be issued from these three signals.

The above is the outline of the basic configuration example 1. According to this elevator, since the car has a double structure, soundproofing is high, and since there is no car door, the conventional problem can be solved. Further, the method of forming the entrance is characteristic, and it is excellent also in terms of the design effect of the elevator.

In this basic configuration example , both the inner car 11 and the outer car 14 are cylindrical, but may have other shapes. For example, the inner car 11 and the outer car 14 may both have a rectangular parallelepiped shape, and the inner car 11 may be configured to form a doorway by translating in the left-right direction inside the outer car 14.

Basic configuration example 2. Next, a basic configuration example 2 of the present invention will be described. Basic configuration example 1
Thus, the landing door 17 is opened and closed in conjunction with the projection 20 provided on the inner car. On the other hand, the basic configuration example 2 is characterized in that a landing door opening / closing control unit 39 is newly provided so that the opening / closing timing of the landing door 17 can be adjusted.

FIG. 7 is a configuration diagram showing the vicinity of a car and a landing of an elevator according to a second basic configuration example . As shown in the figure, the landing opening / closing control section 39 is provided on the upper surface of the inner car 11. The landing opening / closing control section 39 is controlled by the rotation control section 40 shown in FIG.

FIG. 8 is a sectional view of the structure shown in FIG. This figure shows a state in which the entrance door 17 is still closed, though the entrance and exit of the car are formed with the opening 12 and the opening 15 facing each other. From this state, the hall opening / closing control section 39 gradually rotates clockwise, so that the hall door 17 is opened. Therefore, when the door is opened, the entrance of the car is first formed, while when the door is closed, the landing door 1 is closed before the entrance of the car is closed.
7 can be closed. As a result, a timing difference can be provided between the inside and outside getting on and off by the delayed opening and closing.

Embodiment 1 Next, a first embodiment of the present invention will be described. In the basic configuration example 1 or 2, supported the inner cage 11 by moving roller 28, it is to substitute this Example 1 by magnetic levitation device 44.

FIG. 9 is a configuration diagram showing the vicinity of a car and a landing of the elevator according to the first embodiment. 10 is the same as FIG.
FIG. 3 is a cross-sectional view of the configuration shown in FIG. As is clear from these figures, the first embodiment does not include the moving roller 28.

The magnetic levitation device 44 lifts the inner car 11 from the bottom of the outer car 14 by the repulsive force of the electromagnet. By making this repulsive force sufficiently large, the moving roller 28 becomes unnecessary. At this time, since the inner car is in a floating state, it also exhibits a shock absorbing effect.

Further, according to the present embodiment, the current applied to the electromagnet is gradually reduced to cause the inner car 11 to land on the bottom surface of the outer car 14 once, and then to supply the current in the opposite direction, thereby causing the inner car 11 to return. And the outer basket 14 can be fixed. In this case, the brake 38 required in the basic configuration example 1 or 2 becomes unnecessary.

[0044]

As described in detail above, according to the elevator of the present invention, since the car has a double structure, the car is excellent in soundproofing and the car door can be eliminated. As a result, the number of man-hours required for door maintenance is reduced.

According to the present invention, both the inner car and the outer car have a cylindrical shape, and the entrance can be formed only by rotation of the inner car. Therefore, the play space of the outer car that accommodates the inner car can be minimized.

Further, according to the present invention, the sliding of the inner car can be inhibited during the operation of the elevator, so that the unexpected opening of the door during the operation of the elevator is avoided.

Further, according to the present invention, since the landing door can be opened and closed according to the sliding of the inner car, the structure is not complicated as compared with the conventional elevator.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing the vicinity of an elevator car and a landing according to a basic configuration example 1. FIG.

FIG. 2 is a cross-sectional view of the configuration shown in FIG. 1 taken along the line AA in FIG.

FIG. 3 is a cross-sectional view of the configuration shown in FIG. 1 taken along the line AA in FIG.

FIG. 4 is a perspective view of the entire elevator car according to Basic Configuration Example 1.

5 is a cross-sectional view of the configuration shown in FIG. 1 taken along line CC in FIG.

FIG. 6 is a diagram showing a configuration for controlling rotation of an inner car 11 in the first basic configuration example .

FIG. 7 is a configuration diagram showing the vicinity of an elevator car and a landing according to Basic Configuration Example 2.

8 is a cross-sectional view of the configuration shown in FIG. 7 taken along the line DD in FIG.

FIG. 9 is a configuration diagram illustrating the vicinity of a car and a landing of the elevator according to the first embodiment.

10 is a cross-sectional view of the configuration shown in FIG. 9 taken along the line EE in FIG.

FIG. 11 is a configuration diagram showing the vicinity of a car and a landing of a conventional elevator.

[Explanation of symbols]

11 inner basket, 12,15 opening, 14 outer basket, 1
7 landing door, 20 protrusion, 28 moving roller, 29 driving device, 34 roller receiver, 38 brake, 39 landing door opening / closing control unit, 40 rotation control unit, 44 magnetic levitation device.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B66B 1/00-13/30

Claims (4)

(57) [Claims] An inner car that provides a space for mounting a load, an outer car that accommodates an inner car in a slidable state therein, a drive unit that drives the inner car to slide, and an electromagnet. Repulsion force lifts the inner car from the bottom of the outer car
Magnetic levitation means for smoothing the sliding of the inner car, the inner car and the outer car each having an opening, and these two openings are opposed to each other only when a load gets on and off. An elevator characterized by being placed in a position. 2. The elevator according to claim 1, wherein both the inner car and the outer car have a cylindrical shape, and the driving means drives the inner car to rotate inside the outer car. 3. The elevator according to claim 1, wherein the two openings are located at positions facing each other except when the elevator is stopped at an arbitrary floor. An elevator including a prohibition means for prohibiting the inner car from sliding, so as not to cause the elevator car to slide. 4. The elevator according to claim 3, further comprising a landing door opening / closing means for opening / closing a landing-side door in accordance with sliding of the inner car.