JPH1025077A - Hoist for home elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoist, which can be surely operated though an inexpensive induction motor which is simple in structure, hardly breaks down, and is provided with low starting torque is used as a motor for the hoist, for an elevator installed in a house of an ordinary home. SOLUTION: This hoist for a home elevator is provided with a driving mechanism 1 and a hoisting mechanism 6 winding up a wire rope 7, in which one end is connected to a car and the other end is connected to a valance weight, by means of power of the driving mechanism 1 and elevates/lowers the car via the wire rope 7. The driving mechanism 1 transmits power of an induction motor 2 with 500W or less desirably to the hoisting mechanism 6 through a fluid joint 3. Preferably, a sel-motor 4 for automobile driven by a battery is arranged in the driving mechanism 1 so that its power can be transmitted to a power transmitting shaft 5 on the hoisting mechanism 6 side by means of the fluid joint 3 only if necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoisting machine for a home elevator installed in a general home, and uses an inexpensive induction motor having a simple structure, few failures and a low cost as a motor for the hoisting machine. The present invention relates to a hoisting machine for a home elevator, which can be reliably operated in spite of the fact that it is operated, and can prevent a person from being trapped in a car even during a power failure or the like.

[0002]

2. Description of the Related Art In recent years, the population is expected to shift to an aging society in which the proportion of elderly people in general households is increasing. With the rise in land prices, the number of homes for general households having a structure of two stories or more, which has a larger internal volume than the site area, has become very large. Movement to the upper and lower floors in such a general house of two stories or more,
Usually, walking is performed using stairs, but moving up and down the floor by walking using these stairs is not easy for elderly and sick people with weak physical strength, and there is a risk of stepping off the stairs. This is an accompanying operation.

[0003] Therefore, if an elevator is installed in a general home, it is possible to safely and easily move to upper and lower floors. However, elevators are generally limited to large buildings, such as multi-family dwellings, stores, tenants, etc., where a large number of unspecified or unspecified people come and go.
Elevators installed in such large buildings can accommodate at least six people,
Since the weight of the car itself is large, and it is required that the vehicle be lifted and lowered at a high speed when it gets in, a motor with a high output is used as a motor for driving the hoist, so it becomes expensive. Or the structure became complicated, and it could not be converted to a general home.

That is, the conventional elevator as described above has a large output and a complicated structure as an electric motor because the weight of the car is 4 tons, even if the elevator is a relatively small elevator having a maximum loading capacity of about six people. Is used, it is expensive, has a high failure rate, cannot be used in general homes where frequent maintenance and inspection cannot be performed, and has a large current consumption. Since the electric motor cannot be driven with an allowable current of about 100 V and 20 to 30 A, the conventional elevator could not be converted to a general home as it is, and the spread of the home elevator has not been advanced.

[0005] However, since a home elevator installed in a general home is a home elevator, its maximum loading capacity can be set as small as one wheelchair and two people, so that the size of the car can be small. It is not necessary to reduce the weight of the car and the speed at which it moves up and down quickly. It is also possible to reduce the balance weight in combination with the reduction in the weight of the car. It is conceivable that something could be used. So, for example, a basket with a total weight of
If you have a monocoque structure of about 200 kg and the maximum loading capacity is set to a small number of two people and one wheelchair, and the corresponding balance weight is about 300 kg,
With the addition of various weights, such as a braking device for reliably and safely operating the elevator and an opening / closing device for opening / closing the entrance / exit of the car, an output of about 0.35 KW is possible, and it is usually supplied for general household use. It is conceivable that the motor can be driven by a power supply (AC 100 V) and can be operated by an inexpensive motor as a whole.

However, when the motor having the above-described output is energized and started, a large load acts on the output shaft of the motor when the motor is started. Therefore, an induction motor generally used widely as an inexpensive motor is used. When used, the induction motor has a disadvantage that the elevator cannot be operated because the starting torque thereof is small.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art and can reliably operate even a small amount of current that can be used in ordinary households. It is another object of the present invention to provide a hoist for a home elevator, which can prevent a person from being trapped in a car even during a power failure or the like.

[0008]

The inventor of the present invention has made intensive studies to solve the above-mentioned problems, and as a result, a driving mechanism and a wire having one end connected to a car and the other end connected to a balance weight by the power of the driving mechanism. A hoisting mechanism for a home elevator that has a hoisting mechanism for hoisting a rope and raises and lowers the car through a wire rope, wherein the drive mechanism transmits the power of the induction motor to the hoisting mechanism via a fluid coupling. In this way, the torque transmission characteristic of the fluid coupling is used so that a large torque and a large starting current are not required for the electric motor at the time of starting the car as in a conventional elevator. However, by using an induction motor having a fatal disadvantage that the starting torque is small,
The present invention was completed by investigating that an elevator can be installed in a general home.

The driving mechanism is provided with a cell motor for an automobile driven by a battery, and the cell motor is provided so as to be able to transmit the power only when necessary to a power transmission shaft on the winding mechanism side from the fluid coupling. By operating the cell motor even if a power failure occurs during the operation of the elevator, it is possible to move the car to a predetermined floor and prevent a person from being trapped in the car,
Further, if the induction motor of the drive mechanism has a rated power consumption of 500 W or less and can operate the hoisting mechanism, a power line (A) is installed when an elevator is installed in a general home.
It has also been found that the elevator can be reliably operated without particular use of C200V).

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a hoisting machine for a home elevator according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic plan view showing an embodiment of a home elevator hoist according to the present invention, and FIG. 2 is an explanatory diagram schematically showing the structure of the elevator.

Since the home elevator equipped with the hoist of the home elevator according to the present invention is installed in a general home, the maximum loading capacity is one wheelchair and two wheelchairs.
Fluid coupling can be achieved by reducing the weight of the car to a monocoque structure with a total weight of about 200 kilograms, which is set to be as small as a person, and reducing the weight of the balance weight by weighing the car. It has been considered that the torque at the time of starting the electric motor of the hoist for operating the elevator can be suppressed to a small value by using.

A hoisting machine for a home elevator according to the present invention comprises a driving mechanism 1 and a hoisting mechanism for winding a wire rope 7 having one end connected to a car 8 and the other end connected to a balance weight 9 by the power of the driving mechanism 1. 6 is provided. A power transmission unit that rotates a pulley 6a around which the wire rope 7 is wound
6b, and a mechanism similar to the hoisting mechanism 6 of the hoisting machine used in the conventional elevator can be employed. Therefore, a detailed description thereof will be omitted. In order to be installed in a conventional elevator, the space must be added to a general home, so that it is installed on the first floor or the ground floor as shown in FIG.

The drive source of the former drive mechanism 1 is an electric motor which can be driven by a general household power supply of 100 V. Since the structure is simple and there is no brush, there is no wear other than bearings. Since it is durable, has few failures, and is produced in large quantities, an inexpensive induction motor 2 is used. The allowable current that can be used in ordinary homes for this induction motor 2 is usually 20 to 30 A. Is preferably 5 A or less, that is, the rated power consumption is 500 W or less. The drive mechanism 1 is provided with a fluid coupling 3 for transmitting the power of the induction motor 2 to the hoisting mechanism 6. An output shaft 2 a of the induction motor 2 is connected to an input side 3 a of the fluid coupling 3. The power transmission shaft 5 of the hoisting mechanism 6 is connected to the output side 3b of the fluid coupling 3.

Further, the drive mechanism 1 is provided with a battery (see FIG. 1) so that even if a power failure occurs during operation of the elevator, the car 8 can be moved to a predetermined floor to prevent a person from being trapped in the car 8. (Not shown), it is preferable to provide an automobile starter motor 4 that is driven only when necessary. Since the starter motor 4 must be able to transmit its power to the hoist mechanism 6 independently of the induction motor 2, the power connected to the output side 3b of the fluid coupling 3 as in the embodiment shown in FIG. The transmission shaft 5 is provided with a gear 5a, and the output shaft 4a of the starter motor 4 is provided with a gear 4b which is advanced by the gear moving device 4c when the starter motor 4 is driven and meshes with the gear 5a. As the gear moving device 4c, for example, as in the illustrated embodiment, a gear 4b is provided on an output shaft 4a of the cell motor 4 so as to be movable in the axial direction thereof, and a solenoid 4ca is provided near the cell motor 4. An example in which one end of the lever 4cc is pivotally attached to the plunger 4cb of the solenoid 4ca, the other end is engaged with the output shaft 4a provided with the gear 4b, and the approximate center thereof is pivotally attached to the fixed shaft. can do. Although not shown, a switch for operating the starter 4 is provided in the car 8.

When an elevator equipped with a hoist for a home elevator according to the present invention having such a structure is installed in a general home, and the elevator is operated, first, the induction motor 2 of the drive mechanism 1 is energized. And start. At this time, since the output shaft 2a of the induction motor 2 is connected to the input side 3a of the fluid coupling 3, it is in a state similar to that when the induction motor 2 and the hoisting mechanism 6 are cut off by the fluid coupling 3. In addition, the phenomenon that the induction motor 2 does not start due to the load of the hoisting mechanism 6 or the like and the phenomenon that the induction motor 2 burns due to the small starting torque acting on the output shaft 2a of the induction motor 2 does not occur.

When the induction motor 2 rotates in a steady state and a desired torque is generated, the torque of the output shaft 2 a of the induction motor 2 is applied to the power transmission shaft 5 of the hoist mechanism 6 via the fluid coupling 3. The power transmission shaft 5 is rotated by the power transmission, so that an unreasonable load is not applied to the induction motor 2 and the hoisting mechanism 6 operates in a stable state without the need for a complicated start-up shock prevention electronic circuit. It can be done.

Further, a cell motor 4 for an automobile, which is driven by a battery independently of the induction motor 2, transmits the power to the drive mechanism 1 from the fluid coupling 3 to the power transmission shaft 5 on the winding mechanism 6 side only when necessary. If it is provided, even if the induction motor 2 becomes inoperable due to a power failure or the operation of a safety device during operation of the elevator, the car motor 8 is driven to move the car 8 to a desired floor even if the induction motor 2 becomes inoperable. Can be moved. In the case of the embodiment shown in FIG. 1, the emergency switch provided in the car 8 is pressed to energize the starter motor 4 to rotate the output shaft 4a and activate the solenoid 4ca. And plunger 4
Cell motor 4 with lever 4cc whose tip is pivotally attached to cb
The gear 4b provided on the output shaft 4a moves and meshes with the gear 5a provided on the power transmission shaft 5 connected to the output side 3b of the fluid coupling 3, so that the power transmission shaft 5 is rotated. ,
The elevator car 8 is raised and lowered. At this time, the power of the starter motor 4 is not used to rotate the induction motor 2 because the induction motor 2 and the hoisting mechanism 6 are in a state similar to the state where the fluid coupling 3 cuts off the car. Can be moved.

[0018]

As described in detail above, the hoist for a home elevator according to the present invention uses an induction motor as a drive source, but has a drive mechanism for transmitting its power to the hoist mechanism via a fluid coupling. Adopted, it is possible to eliminate the drawbacks caused by the small starting torque of the induction motor, and to use an induction motor with low rated power consumption, simple structure, few failures, and low cost. Thus, the elevator can be reliably driven in a house for ordinary households within a permissible current amount range of 100 V, 20 to 30 A normally supplied to ordinary houses with few failures.

If the driving mechanism is provided with a cell motor driven by a battery, and this cell motor is provided to the hoist mechanism independently of the induction motor so that the power can be transmitted to the winding mechanism, a power failure or a safety device may occur. Even in an emergency when the induction motor of the drive mechanism is not energized, such as when it is activated, the car can be moved to the desired floor by driving the cell motor by the battery, so it is confined in the car in the event of an emergency such as a power failure It is excellent in safety without being done.

The hoist for a home elevator according to the present invention having various effects as described above can supply an inexpensive home elevator for safely moving people on the upper and lower floors of a house in an aging society. And its value is very large.

[Brief description of the drawings]

FIG. 1 shows a home elevator hoist according to the present invention.
It is a schematic plan view showing an example.

FIG. 2 is an explanatory view schematically showing the structure of an elevator.

[Explanation of symbols]

 Reference Signs List 1 drive mechanism 2 induction motor 2a output shaft 3 fluid coupling 3a input side 3b output side 4 cell motor 4a output shaft 4b gear 4c gear moving device 4ca solenoid 4cb plunger 4cc lever 5 power transmission shaft 5a gear 6 winding mechanism 6a pulley 6b power transmission unit 7 Wire rope 8 Basket 9 Balance weight

Claims (3)

[Claims] An end is connected to a car (8) by a driving mechanism (1) and the power of the driving mechanism (1), and the other end is a balance weight.
And a hoisting mechanism (6) for winding up a wire rope (7) connected to the (9).
As a hoisting machine for a home elevator that can be raised and lowered through (7), the drive mechanism (1) transmits power of an induction motor (2) to the hoisting mechanism (6) via a fluid coupling (3). A hoist for a home elevator, comprising: 2. A driving mechanism (1) is provided with a cell motor (4) for a vehicle driven by a battery, and the cell motor (4) is driven by a power from a fluid coupling (3) on a side of a winding mechanism (6). The hoisting machine of a home elevator according to claim 1, wherein the power is transmitted to the transmission shaft (5) only when necessary. 3. An induction motor (2) of a drive mechanism (1),
3. The hoisting machine of a home elevator according to claim 1, wherein a hoisting mechanism (6) having a rated power consumption of 500 W or less and capable of operating the hoisting mechanism (6) is used.