JPH05286666A - Elevator device - Google Patents

Abstract

PURPOSE:To make the whole driving device compact by stretching a chain between the ceiling center of an elevator shaft and its lower wall surface or bottom surface, allowing a sprocket rotated by a motor to travel on the chain, and thereby elevating and sinking an elevator cage. CONSTITUTION:A chain 11 is provided so that its top and bottom are fixed to the center of a ceiling 3 and the wall surface 2 lower part with the aid of respective securing members 12, 13, and in the upper part of an elevator cage which is under guidance elevated and sunk along a shaft 1 through supporting rollers 7 on both sides, a mounting member 14 is provided which bears the first and second guide rollers 15, 17 and a sprocket 16, upon setting the chain 11 can this sprocket 16, the chain 11 is led up and down through the guide rollers 15, 17, and the sprocket 16 is rotated by a motor so that the sprocket 16, i.e., the cage 5, elevates and sinks along the chain 11. Current feed to the motor takes place via a cord 20 which is protected with a supporting member 22 in a bent form.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator device for raising and lowering a car along a guide rail.

[0002]

2. Description of the Related Art Driving a conventional elevator device is disclosed in Japanese Patent Laid-Open No.
A structure in which a car is pushed up by a hydraulic jack as disclosed in Japanese Patent Laid-Open No. 1-136889;
As disclosed in the publication, there is a structure in which a car is suspended by a rope and the rope is wound around a drum to move up and down.

[0003]

However, the former structure has a drawback that oil leaks pollute the car and the inside of the hoistway and the hydraulic jack buckles when the hoisting distance becomes long. In the latter structure, the rope becomes longer and
There is a drawback in that the drum for winding the drum becomes large and the entire driving device becomes large.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an elevator device which can cope with an arbitrary ascending / descending distance with a compact drive device.

[0005]

SUMMARY OF THE INVENTION The present invention relates to an elevator device for raising and lowering a car guided by a guide rail in a hoistway, wherein a checker is provided between the ceiling center of the hoistway and a lower wall surface or bottom surface. A sprocket driven by an electric motor and a guide member are provided on the upper part of the car, and a part of the chain is hung on the sprocket and the car is guided by the guide member. It leads to the outside of.

[0006]

When the electric motor is driven to rotate the sprocket, the chain is fixed vertically,
The sprocket meshing with the chain moves up and down, and the car integrated with the sprocket also moves up and down while being guided by the guide rails. When the car reaches a predetermined floor, the car can be stopped at a predetermined floor by stopping the electric motor.
The chain is designed to suspend and hold the car.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.
Reference numeral 1 denotes a hoistway constructed inside or outside the building, and the hoistway 1 is surrounded by a wall surface 2, a ceiling 3 and a bottom surface 4.
Reference numeral 5 denotes a passenger car formed in a rectangular shape. A door 6 is formed on the front surface of the car 5, and the passenger can get on and off by opening and closing the door 6.

Four support rollers 7 are provided on the left and right sides of the car 5 in front, rear, up and down directions via brackets 8. The support rollers 7 are in the vertical direction of the wall surface 2 of the hoistway 1. It can roll on a gutter-shaped guide rail 9 formed on the. Reference numeral 10 is a drive device for moving the car 5 up and down. The drive device 10 will be described below.

Reference numeral 11 is a chain stretched vertically.
The upper end of the chain 11 is fixed to the center of the ceiling 3 via an upper fixing member 12, and the lower end is fixed to the lower portion of the wall surface 2 or the bottom surface 4 via a lower fixing member 13. A flat plate-shaped mounting member 14 is erected above the car 5, and a guide member is provided at one side of the mounting member 14 at approximately the center of the car 5.
One first guide roller 15 and one sprocket 16 are pivotally supported, and one second guide roller is provided on the left side of the car 5.
A guide roller 17 is pivotally supported.

The upper fixing member 1 is attached to the sprocket 16.
The chain 11 hung from 2 is hung around to prevent the chain 11 from coming off the sprocket 16 by the first guide roller 15. The second guide roller
The la 17 guides the chain 11 extending leftward by the first guide roller 15 downward from the left side of the car 5.

An electric motor 19 fixed to a mount 18 is provided on the other side of the mounting member 14, and the sprocket 16 is driven by the electric motor 19. Reference numeral 20 is a code for energizing the electric motor 19, and the code 2
0 is from the power source 21 provided above the hoistway 1 to the electric motor 1
9 are connected to each other, and the code 20 is protected by a support member 22 having a bent shape.

Reference numeral 23 is a cushioning member such as rubber for cushioning the car 5 at the most lowered position, and is provided at the center of the bottom surface 4 of the hoistway 1. In the embodiment, the chain is guided to the lower left side by the second guide roller.
It is not limited to the left side, and it may be front, rear, left or right.

The guide member may be a sprocket. The operation of the present invention having the above-mentioned construction will be described below. First, when the car is moved up and down, the electric motor 19
Forward or reverse. The sprocket 16 is rotated by the rotation of the electric motor 19, and the sprocket 16 is moved to the chain 1.
By moving on the car 1, the car 5 also moves up and down the hoistway 1.

At that time, since the car 5 is suspended in the center by the chain 11, the car 5 normally moves up and down in a substantially horizontal state.
Even if an eccentric load is applied by a person who gets into the car 5, the left and right support rollers 7 hold the car in a substantially horizontal state. When stopping the car 5 on a predetermined floor, the electric motor 19 is stopped. As a result, the sprocket 16
When the car is stopped and is suspended from the chain 11, the car 5
Also stop.

After that, the door 6 is opened to get on and off.

[0016]

As described above, according to the present invention, the chain is stretched between the center of the ceiling of the hoistway and the lower part of the hoistway, and the chain is hung on the sprocket and the guide roller provided on the upper part of the car. By rotating the sprocket with an electric motor, the sprocket moves on the chain to raise and lower the car.

As a result, there is no fear of dirt in the hoistway due to oil leakage as in the conventional case, and even if the hoistway is long, it is only necessary to make the chain length corresponding to the length of the hoistway. It is possible to deal with this, and the entire drive device can always be used in a compact state.

[Brief description of drawings]

FIG. 1 is an overall view of the present invention.

FIG. 2 is an AA diagram of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 hoistway 5 car 9 guide rail 10 drive device 11 chain 15 first guide roller 16 sprocket 17 second guide roller 19 electric motor

Claims (1)

[Claims] 1. An elevator apparatus for raising and lowering a car guided by a guide rail in a hoistway, wherein a chain is stretched between the center of the ceiling of the hoistway and a lower wall surface or bottom surface, On the other hand, an upper part of the car is provided with a sprocket driven by an electric motor and a guide member, and a part of the chain is wound around the sprocket and guided by the guide member to the outside of the car. An elevator device characterized by the above.