JP2003104658A - Linear motor supporting device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a linear motor supporting device for driving an elevator of simple structure, which can be adjusted in installation with ease. SOLUTION: First permanent magnets are arranged in an elevator car such that different magnetic poles overhang on the side of a hoistway so as to oppose to each other, and between the permanent magnets, plural sets of primary coil are arranged in the vertical direction along the hoistway. Each of the primary coils is provided with a second permanent magnet so as to repulse the first permanent magnet, and the primary coils arranged in the vertical direction are coupled to each other through a wire body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor supporting device for a linear motor drive type elevator.

[0002]

2. Description of the Related Art A conventional linear motor drive type elevator is shown in FIG. That is, on the wall 2 of the hoistway 1, a plurality of primary coils 3 are arranged in the vertical direction, and a rail 4 extending in the vertical direction is provided. A plurality of permanent magnets 6 are respectively provided on the side surfaces of the car 5 that moves up and down in the hoistway 1 along the rails 4 so as to face the primary coil 3.

In such a low press linear motor elevator, a synchronous linear motor is constituted by the primary coil 3 and the permanent magnet 6, and the car 5 moves up and down along the rail 4 by the propulsive force of this linear motor. And
Recently, it has been considered that a complicated linear motor as shown in FIG. 3 is configured to obtain a large propulsive force.

[0004]

However, since the primary coil 3 provided on the hoistway wall 2 is frequently subjected to a repulsive force against the propulsive force, the primary coil 3 is reliably supported (in FIG. 3, it is supported by the rigid body 7 on the comb). In general, this linear motor support structure is large and complicated because the gap between the primary coil 3 and the permanent magnet 6 peculiar to the linear motor must be accurately adjusted. I didn't want to be disappointed.

The present invention has been made in view of the above points, and an object thereof is to provide a linear motor supporting device having an extremely simple structure.

[0006]

According to the present invention, a primary coil of a linear motor is provided on the hoistway side, and a permanent magnet of the linear motor is provided on the car side. The primary coil and the permanent magnet are arranged to face each other. In a linear motor drive type elevator that travels a car by propulsion, permanent magnets are arranged so as to project toward the hoistway so that different poles face each other, and a primary coil is placed vertically between the permanent magnets along the hoistway. A plurality of sets are arranged in the above, and the primary coils arranged above and below are connected by a filament.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention provides a supporting device in which a support is surely performed despite a simple structure and a gap adjustment peculiar to a linear motor is automatically performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is an overall perspective view of a low press linear motor elevator according to the present invention, FIG. 4 is a view taken along the line AA of FIG. 1, FIG. 5 is a view taken along the line BB of FIG. 1, and FIG. C-
It is a C line arrow line view.

In the drawings, the same symbols as those in FIGS. 2 and 3 indicate the same components, but 11 and 12 are brackets provided so as to face the car 5 so as to project toward the hoistway 1 side. , The brackets 11 and 12 have N-pole permanent magnets 1
3 and S-pole permanent magnets 14 are alternately arranged in different steps. Reference numeral 21 denotes a primary coil provided on the hoistway wall 2 via a bracket 22, and has a N-pole permanent magnet 2 near the car 5.
3 and an S pole permanent magnet 24 are provided, and the permanent magnets 23 and 24 arranged above and below are connected to each other across the hoistway 1 by a connecting tool 25 by a linear member 26 such as a rope. The ends of the filament 26 are fixed to the ceiling and the pit of the hoistway 1.

With such a structure, the primary coil 21
Has a degree of freedom in the horizontal direction, and the permanent magnets 13 and 14
Since the gap is automatically maintained by using the repulsive force between the permanent magnets 23 and 24 and the permanent magnets 23 and 24, the reaction force applied to the primary coil 21 does not require a member having a complicated mechanism.
Securely held by 6. Further, the primary coil 21 itself may be prepared in advance as a unit and prepared at the factory side, and it does not take time and effort when installing the elevator, and the man-hours can be reduced accordingly.

In the embodiment, a rope is taken as an example of the linear member 26, but a wire or the like may be used and the present invention is not limited to the embodiment. Further, the terminal end portion of the linear member 26 is fixed to the ceiling portion of the hoistway 1 and the pit. However, if the primary coils 21 arranged above and below can be firmly connected to each other, where (for example, a bracket is used). It is needless to say that the intermediate portion of the hoistway may be fixed via the above-mentioned structure, and the invention is not limited to the embodiment. Further, although the gap is automatically held by the permanent magnets 13 and 23 and the permanent magnets 14 and 24, a holding member such as a roller may be used to maintain the gap.

[0012]

As described above, according to the present invention, since it is possible to easily support the primary coil in the vertical direction by the linear member,
An inexpensive linear motor elevator can be obtained.
Further, if the gap between the linear motors is maintained by utilizing the repulsive force of the permanent magnets or the like, it is possible to configure the linear motor having a simple structure and automatically adjusting the gap.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a low press linear motor elevator according to the present invention.

FIG. 2 is a partial perspective view of a conventional linear motor drive type elevator.

FIG. 3 is a configuration diagram of a conventional linear motor.

FIG. 4 is a view taken along the line AA of FIG.

5 is a view taken along the line BB of FIG.

FIG. 6 is a view taken along the line CC of FIG.

[Explanation of symbols]

1 hoistway 2 hoistway walls 3,21 Primary coil 4 rails 5 baskets 13, 14, 23, 24 Permanent magnet 26 Striatum

Claims (5)

[Claims] 1. A car is provided with a primary coil of a linear motor on the hoistway side and a permanent magnet of the linear motor on the car side, and the car is driven by a propulsive force generated between the primary coil and the permanent magnet, which are arranged to face each other. In the linear motor drive type elevator, the permanent magnets are arranged so as to project toward the hoistway so that different poles face each other, and the primary coils are vertically arranged along the hoistway between the permanent magnets. A linear motor support device for an elevator, characterized in that the primary coils arranged in pairs are connected to each other by a linear body. 2. The elevator linear motor support device according to claim 1, wherein the primary coil is provided with a holding member for maintaining a gap between the primary coil and the permanent magnet. 3. The linear motor supporting device for an elevator according to claim 1, wherein the linear member is a rope. 4. The linear motor supporting device for an elevator according to claim 3, wherein one end of the rope is fixed to a ceiling of the hoistway and the other end is fixed to a pit or an intermediate portion. 5. The holding member is a second permanent magnet having a polarity repulsive to the permanent magnet.
Elevator linear motor support device according to.