JP2002173281A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce thickness dimensions of a balance weight to install a drive device and to reduce a clearance between a side surface of a passenger car and an inwall surface of an elevator shaft required to arrange the balance weight. SOLUTION: It is possible to extensively reduce outside diametrical dimensions of a driving sheave 52 as a thin and flat rope 55 is used as a rope for elevating drive to be used to elevate the balance weight 20. Consequently, it is possible to arrange the driving sheave 52 on the balance weight 20 so that an axis of rotation of the driving sheave 52 extends along the cross direction of the balance weight 20. The dimensions of a driving motor 51 and the driving sheave 52 are never accumulated and the thickness dimensions of the balance weight 20 never becomes large as the driving motor 51 of the drive device 50 is coaxially arranged with the driving sheave 52. Consequently, it is possible to reduce the clearance between the rear side surface 10B of the passenger car 10 and the rear inwall surface 9B of the elevator shaft 9 required to arrange the balance weight 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator having no machine room at the top of a hoistway, and more particularly to raising and lowering a car by raising and lowering a counterweight by a driving device mounted on the counterweight. The present invention relates to an elevator having a structure.

[0002]

2. Description of the Related Art Conventionally, so-called machine roomless elevators, which do not have a machine room at the top of a hoistway, have been developed and proposed in order to efficiently use the space in a building and avoid problems such as sunshine rights. I have.

For example, as shown in FIG. 12, an elevator apparatus described in Japanese Patent Application Laid-Open No. 9-124259 is wound around a pair of pulleys 1 provided at the top of a hoistway, and a car 2 and a fishing A hanging rope 4 for suspending the weight 3 in a fishing bottle shape, and a lifting drive rope 5 vertically stretched between the top and bottom of the hoistway are provided. And counterweight 3
Is provided with a drive device 7 having a drive sheave 6 which engages with the lifting drive rope 5.

[0004] This elevator apparatus has a structure in which a drive sheave 6 engaged with a lifting drive rope 5 is rotated in both forward and reverse directions to raise and lower the counterweight 3 and thereby raise and lower the car 2. There is no need to provide a machine room at the top of the hoistway.

[0005]

When a general rope having a circular cross section similar to that of the suspension rope 4 is used as the lifting drive rope 5, the value of the outer diameter of the drive sheave 6 is determined by the lifting drive. Since it is necessary to set the outer diameter of the rope 5 to about several tens of times, the outer diameter of the drive sheave 6 becomes large.

Therefore, in this elevator apparatus,
As shown in FIG. 13, the driving device 7 is arranged so that the rotation shaft 8 of the driving sheave 6 extends in the thickness direction of the counterweight 3 (the direction of the dimension B in FIG. 13), and as shown in FIG. The large outer diameter of the drive sheave 6 is accommodated within the widthwise dimension of the counterweight 3 (dimension A in FIG. 12).

Further, in this elevator apparatus, since the drive sheave 6 and the drive device 7 are coaxially arranged on the rotating shaft 8, the dimensions of the drive sheave 6 and the drive device 7 are accumulated, and the counterweight 3 (Dimension B in the figure) increases. Thereby, the car 2 required for disposing the counterweight 3
The clearance between the side of the building and the inner wall of the hoistway must be large, and the space in the building cannot be used efficiently.

Further, if the output of the driving device 7 is increased to cope with an increase in the mass of the car 2 and an increase in the elevating speed, the thickness of the counterweight 3 is further increased.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, reduce the thickness of the counterweight to which the drive device is mounted, and provide a ride necessary for disposing the counterweight. To reduce the gap between the side of the car and the inner wall of the hoistway to provide an elevator that can efficiently utilize the space in the building and increase the degree of freedom in the arrangement of the counterweight and the suspension rope. is there.

[0010]

According to a first aspect of the present invention, a suspension rope is wound around a pulley provided at the top of a hoistway to suspend a car on one end thereof. A balance weight is suspended at the other end side to form a fishing bottle, and a hoisting drive rope stretched vertically between the top and bottom of the hoistway is mounted on the balance weight. An elevator that raises and lowers the car by engaging the drive sheave of the device and rotating the drive sheave to raise and lower the counterweight by engaging with the lift drive rope, A thin flat rope is provided, and a rotating shaft of the drive sheave is arranged to extend along a width direction of the counterweight.

That is, in the elevator according to the first aspect, since the thin flat rope is used as the lifting / lowering drive rope, the outer diameter of the drive sheave is reduced as compared with the case where a general rope having a circular cross section is used. It can be significantly reduced. Thus, the rotation shaft of the drive sheave can be arranged to extend along the width direction of the counterweight. At this time, if the drive shaft of the drive device and the rotation shaft of the drive sheave are made coaxial, the drive shaft also extends in the width direction of the counterweight, so that the dimensions of the drive device and the drive sheave are accumulated and The thickness of the weight is not increased. Also,
Since the axial length of the driving device can be made sufficiently large in the width direction of the counterweight, even when the output of the driving device is increased to cope with an increase in the mass of the car and an increase in the elevating speed, the counterweight can be increased. Does not increase in thickness. Therefore, it is possible to reduce the gap between the side surface of the car and the inner wall surface of the hoistway necessary for disposing the counterweight, and to effectively utilize the space in the building. Further, since the thickness dimension of the counterweight can be suppressed to a small value, the degree of freedom in arranging the counterweight, the suspension rope, and the like can be increased.

According to a second aspect of the present invention, in the elevator according to the first aspect, a speed reducer for driving the driving sheave is provided in the driving device.

That is, in the elevator according to the present invention, since the drive shaft of the drive device extends in the width direction of the counterweight, the speed reducer is provided between the drive sheave and the drive motor constituting the drive device. Space for the operation can be secured. By providing a speed reducer for driving the drive sheave in that space, the drive motor can be made smaller, or a higher-output drive motor can be provided in a certain space.

According to a third aspect of the present invention, in the elevator according to the first or second aspect, a control device for controlling the driving device is mounted on the counterweight.

That is, in the elevator according to the third aspect, the control device such as an inverter necessary for controlling the drive motor is disposed on the balance weight, so that the weight of the control device is reduced by the weight of the balance weight. And a space for providing the control device in another part can be eliminated.

[0016] The means described in claim 4 corresponds to claims 1 to 3.
In the elevator according to any one of the above, the pulley for winding the suspension rope is disposed in a gap between the side surface of the car and the inner wall surface of the hoistway when the hoistway is viewed from above in the vertical direction. Features.

That is, according to the elevator of the fourth aspect, since the pulley does not exist above the elevator stroke of the car, the vertical dimension of the hoistway top can be reduced.

[0018] The means described in claim 5 is the first to fourth aspects.
The elevator according to any one of the above, wherein one end of the suspension rope is connected to a lower part of the car.

That is, according to the elevator of the fifth aspect, the car can be raised to the uppermost position where the ceiling of the car is above the pulley, so that the vertical dimension of the hoistway top is reduced. It can be further shortened.

According to a sixth aspect of the present invention, the elevator according to the fifth aspect includes a pair of suspension ropes, and a portion connecting one end of one suspension rope to a car and one end of the other suspension rope. A portion connected to the car is disposed so as to sandwich the center of gravity of the car in the front-rear direction or the left-right direction.

That is, according to the elevator of the present invention, since the pair of suspension ropes are suspended at diagonal positions so as to sandwich the center of gravity of the car in the front-rear direction or the left-right direction, the gravity acting on the car The horizontal offset between the vehicle and the force for lifting the car upward can be reduced, and the car can be more stably suspended.

[0022] The means described in claim 7 is the first to fourth aspects.
The elevator according to any one of the above, further comprising a pair of lower car sheave disposed in the lower part of the car and a weight-side sheave disposed in the counterweight, the hanging rope is the car below the sheave and The car and the counterweight are suspended by 2: 1 roping via the weight-side sheave.

That is, according to the elevator of the present invention, since the car is suspended by using the pair of lower sheaves disposed below the car, the car is suspended at the uppermost position in the hoistway. Position, and the vertical dimension of the hoistway top can be reduced.

According to an eighth aspect of the present invention, in the elevator according to the seventh aspect, a pair of cage lower sheaves are provided so as to sandwich the center of gravity of the car in the front-rear direction or the left-right direction. .

That is, according to the elevator described in claim 8, the suspension rope is suspended at the diagonal position so as to sandwich the center of gravity of the car in the front-rear direction or the left-right direction via the pair of car sheaves. The horizontal offset between the gravity acting on the car and the force lifting the car upward can be reduced, and the car can be suspended more stably.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an elevator according to the present invention will be described below in detail with reference to FIGS. In the following description, the same portions will be denoted by the same reference numerals, and the description thereof will be omitted. The vertical direction is the vertical direction, the direction in which the passenger enters and exits the car is the front-rear direction, and the The frontage direction is called the left-right direction.

First Embodiment First, an elevator 100 according to a first embodiment of the present invention will be described with reference to FIGS.

The car 10 in the elevator 100 according to the first embodiment includes a pair of left and right car-side guide rails 1.
While being guided up and down inside the hoistway 9 by being guided by the elevators 1 and 12, it has an entrance door 13 on its front face 10F.

When the hoistway 9 is viewed from above in the vertical direction, a counterweight 20 and its elevating and lowering are provided in a gap formed between the rear inner wall surface 9B of the hoistway 9 and the rear side surface 10B of the car 10. A pair of left and right weight-side guide rails 21 and 22 for guiding are provided.

When the hoistway 9 is viewed from above in the vertical direction, the left inner wall surface 9L of the hoistway 9 and the left side surface 1 of the car 10
A pair of pulleys 31 and 32 around which one suspension rope 30 is wound are disposed in a gap formed between the pulley 31 and the top and bottom of the hoistway 9. This hanging rope 3
The lower end of a portion 33 of the vehicle 0 that hangs down from the front pulley 31 is locked to a hitch portion 14 provided on the front left side of the lower part of the car 10. The lower end of a portion 34 of the suspension rope 30 that hangs from the pulley 32 on the rear side is locked by a hitch portion 23 provided on the upper left side of the counterweight 20.

When the hoistway 9 is viewed from above in the vertical direction, the rear inner wall surface 9B of the hoistway 9 and the rear side surface 1 of the car 10
A pair of left and right pulleys 41 and 42 around which the other suspension rope 40 is wound are disposed in the gap formed between the pulley 41 and the hoistway 9. This hanging rope 4
The lower end of a portion 43 of the pair 0 that hangs down from the left pulley 41 is locked to the hitch portion 24 provided at the upper right side of the counterweight 20. The pulley 4 on the right side of the hanging rope 40
The lower end of the portion 44 hanging down from 2 is locked by a hitch 15 provided on the rear right side of the lower part of the car 10.

A driving device 50 for raising and lowering the car 10 is mounted on the counterweight 20. Drive device 50
Has a drive motor 51 and a drive sheave 52 that is driven to rotate by the drive motor 51. The rotation shafts 53 of the drive sheaves 52 extend horizontally along the width direction of the counterweight 20 (the left-right direction in FIG. 2). Extends to. A driven sheave 54 that rotates about a rotation axis (not shown) parallel to the rotation axis 53 is provided below the drive sheave 52.

A thin flat rope 55 stretched in the vertical direction inside the hoistway 9 is wound around the drive sheave 52 and the driven sheave 54 of the drive device 50 as shown in FIG. The thin flat rope 55 is made by flat weaving a steel wire in a thin flat shape, and has a width W as shown in FIG.
Is about 10 mm, and its thickness t is about 2 mm.

The driven sheave 54 of the thin flat rope 55
The upper end of the portion 55a extending upward from the upper end is locked to the top of the hoistway at the hitch portion 56. Portion 55b of thin flat rope 55 extending downward from drive sheave 52
Is locked to the bottom of the hoistway at the hitch 57. Thus, when the drive sheave 52 is rotated clockwise in FIG. 3, the counterweight 20 is raised by frictional engagement with the thin flat rope 55, the car 10 is lowered, and the drive sheave 52 is rotated counterclockwise in FIG. The counterweight 20 rises and the car 10 descends.

Next, the operation and effect of the elevator 100 according to the first embodiment having the above-described structure will be described.

In the elevator 100 of the first embodiment, since the thin flat rope 55 is used as a lifting drive rope used for raising and lowering the car 10,
As compared with the case where a general rope having a circular cross section is used, the outer diameter of the drive sheave 52 can be significantly reduced. Accordingly, the drive sheave 52 is moved so that the rotation shaft 53 of the drive sheave 52 extends horizontally in the width direction of the counterweight 20, in other words, horizontally between the pair of right and left weight-side guide rails 21 and 22. 20.

Further, since the drive motor 51 of the drive device 50 is arranged coaxially with the drive sheave 52, the drive motor 5
The drive shaft 1 (not shown) also extends in the width direction of the counterweight 20, so that the drive motor 51 and the drive sheave 52
Does not accumulate and the value of the thickness dimension (dimension B in FIG. 3) of the counterweight 20 does not increase. Therefore,
The gap between the rear side surface 10B of the car 10 and the rear inner wall surface 9B required for disposing the counterweight 20 and the hoistway 9 can be reduced, and the space in the building can be effectively utilized. In addition, since the axial length of the driving device 50 can be made sufficiently large in the width direction of the counterweight 20, the driving motor 51 can cope with an increase in the mass of the car 10 and an increase in the elevating speed.
The thickness of the counterweight 20 does not increase even when the output of the counterweight is increased.

Since the value of the thickness dimension of the counterweight 20 can be suppressed to a small value, the counterweight 20 and the suspension rope 30,
40 can be freely arranged at any position as needed. Thus, the pair of front and rear pulleys 31 and 32 around which one suspension rope 30 is wound can be connected to the left side surface 10L of the car 10 and the hoistway 9 when the hoistway is viewed from above in the vertical direction.
In the gap between the left inner wall surface 9L and the left inner wall surface 9L. Further, a pair of left and right pulleys 41 and 42 around which the other suspension rope 40 is wound are disposed between the rear side surface 10B of the car 10 and the rear inner wall surface 9B of the hoistway 9 when the hoistway is viewed from above in the vertical direction. It can be arranged in the gap. As a result, these pulleys 31 and 3 are placed above the car 10.
Since there is no 2, 41, 42, the vertical dimension of the top of the hoistway 9 can be reduced.

Further, since one ends of the pair of suspension ropes 30 and 40 are respectively locked to the hitch portions 14 and 15 provided at the lower part of the car 10, the car 10 is located at the uppermost position inside the hoistway 9. Position, in other words, each pulley 31, 3
2, 41, 42, the vertical dimension of the top of the hoistway 9 can be reduced.

FIG. 2 shows a hitch portion 14 for locking one end of one suspension rope 30 to the car 10 and a hitch portion 15 for locking one end of the other suspension rope 40 to the car 10. As described above, since the center of gravity G of the car 10 is disposed at diagonal positions so as to sandwich the center of gravity G in the front, rear, left and right directions, the horizontal offset between the gravity acting on the car 10 and the force for lifting the car 10 upward. And the car 10 can be suspended more stably.

Second Embodiment Next, an elevator 200 according to a second embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 5, an elevator 200 according to the second embodiment is such that the lifting and lowering position of the counterweight 20 is arranged on the side surface in the elevator 100 according to the first embodiment shown in FIG. .

More specifically, as shown in FIG. 6, when the hoistway 9 is viewed from above in the vertical direction, it is formed between the right inner wall surface 9R of the hoistway 9 and the right side surface 10R of the car 10. The counterweight 20 and a pair of left and right weight-side guide rails 21 and 22 for guiding the lifting and lowering of the counterweight 20 are disposed in the clearances.

Further, when the hoistway 9 is viewed from above in the vertical direction, the top of the hoistway 9 in the gap formed between the rear inner wall surface 9B of the hoistway 9 and the rear side surface 10B of the car 10 is formed. A pair of left and right pulleys 31 and 32 around which one suspension rope 30 is wound are provided. When the hoistway 9 is viewed from above in the vertical direction, the right inner wall surface 9R of the hoistway 9
A pair of pulleys 41 and 42 around which the other suspension rope 40 is wound are disposed at the top of the hoistway 9 in a gap formed between the hoistway 9 and the right side surface 10R of the car 10.

That is, the elevator according to the present invention uses the driving device 50 mounted on the
Since the thickness dimension of the counterweight 20 can be kept at a small value while using a method of lifting and lowering, the counterweight 20 can be arranged on the back side of the car 10 like the elevator 100 of the first embodiment. Alternatively, the counterweight 20 can be arranged on the left and right side surfaces of the car 10 like the elevator 200 of the second embodiment.

Third Embodiment Next, an elevator 300 according to a third embodiment of the present invention will be described with reference to FIGS.

The elevator 300 according to the third embodiment employs a system in which a car is raised and lowered by using a driving device mounted on a counterweight, as in the first and second embodiments described above. The present invention is applied to the case where the entrance doors 13 are provided on both the front and rear surfaces of the car 10. The counterweight 60 is disposed on the left side of the car 10, and the car 10 is provided by one suspension rope 70. 10 and counterweight 60
Is suspended by so-called 2: 1 roping. The term “2: 1 roping” means that the ratio between the lifting speed of the hanging rope hanging from the pulley around which the hanging rope is wound and the lifting speed of the car or the counterweight is 2: 1.

As shown in FIG. 8, the car 10 is provided with entrance doors 13 on both the front and rear sides. For example, a passenger who has entered the car 10 from the front entrance door 13F is not allowed to enter the car 10 on the rear side. It can get down from the entrance door 13B.

When the hoistway 9 is viewed from above in the vertical direction, the counterweight 60 and the guide rails 21 and 22 for guiding the hoisting and lowering thereof are connected to the left inner wall surface 9L of the hoistway 9 and the car 1
0 is disposed in a gap formed between the left side surface 10L and the left side surface 10L. When the counterweight 60 moves up and down by the engagement of the driving sheave 52 of the driving device 50 and the lifting drive rope 55, the car 10 moves up and down via one suspension rope 70.

When the hoistway 9 is viewed from above in the vertical direction, the hoisting rope 70 is provided within a gap formed between the left inner wall surface 9L of the hoistway 9 and the left side surface 10L of the car 10. 9 is wound around one pulley 71 provided at the top.

The lower end of the portion 72 of the suspension rope 70 hanging forward from the pulley 71 extends horizontally below the car 10 via one of the car bottom sheaves 73 disposed on the front left side below the car 10. A horizontally extending portion 74 extends upwardly on the right side of the car 10 via the other lower car sheave 75 disposed below the car 10 and on the rear right side, and the upper end of the upwardly extending portion 76. Are locked to a hitch portion 26 of a bracket 25 attached to the upper end of the right car-side guide rail 12.

A portion 77 of the suspension rope 70 that hangs rearward from the pulley 71 extends upward via a weight-side sheave 61 disposed on the counterweight 60, and an upper end of the upwardly extending portion 78 is located on the rear side. It is locked to a hitch portion 28 of a bracket 27 attached to the upper end of the weight-side guide rail 22.

Thus, the hanging rope 70 suspends the car 10 and the counterweight 60 by so-called 2: 1 roping. In the elevator 300 of the third embodiment, a method is adopted in which the car 10 is raised and lowered by raising and lowering the counterweight 60 via the lifting drive rope 55 by the driving device 50 mounted on the counterweight 60. Since the car 10 can be suspended above the car 10 via a pair of car sheaves 73 and 75 disposed below the car 10, the car 10 is raised to the uppermost position inside the hoistway 9. The vertical dimension of the top of the hoistway 9 can be reduced.

Further, since the pair of lower car sheaves 73 and 75 are disposed so as to sandwich the center of gravity G of the car 10 in the front, rear, left and right directions, the gravity acting on the car 10 and the car 10 are lifted upward. By reducing the horizontal offset with the force, the car 10 can be suspended more stably.

Fourth Embodiment Next, an elevator 400 according to a fourth embodiment of the present invention will be described with reference to FIG.

The elevator 400 according to the fourth embodiment is different from the elevator 100 according to the first embodiment in that the size of the counterweight 20 in the width direction is increased, and the pulling of the suspension ropes 30 and 40 is changed.

That is, the driving device 50 is mounted on the counterweight 20, and the driving sheave 51 of the driving device 50 frictionally engages with the lifting drive rope 55, whereby the counterweight 20 moves up and down. The car 10 moves up and down via the pair of suspension ropes 30 and 40. Here, one suspension rope 30 has a lower end of a portion 33 that hangs from the pulley 32 supported on the uppermost portion of the guide rail 21 to the car 10 side,
Hitch part 14 provided on the left rear side of the lower part of car 10
And a lower end of a portion 34 hanging down from the pulley 32 toward the counterweight 20 is locked to a hitch portion 23 provided at an upper left portion of the counterweight 20.

When the hoistway is viewed from above in the vertical direction, the other hanging rope 40 is connected to the right inner wall surface of the hoistway and the car 1.
It is wound around a pair of front and rear pulleys 41 and 42 disposed in a gap formed between the right side surface 10B and the right side surface 10B. The lower end of a portion 43 of the hanging rope 40 that hangs down from the pulley 41 on the front side is locked by the hitch portion 15 provided on the front right side of the lower part of the car 10, and the lower end of a portion 44 hangs down from the pulley 42 on the rear side. Is locked to a hitch portion 24 provided on the upper right side of the counterweight 20.

As in the elevator 400 according to the fourth embodiment, the car 10 is moved up and down by the driving device 50 mounted on the counterweight 20. Car 1 with increased mass
If it is necessary to arrange the suspension rope 30 so as to extend fully in the left-right direction on the back side of the car 0, one suspension rope 30 is arranged on the left side of the car 10 and the other suspension rope 40 is 10 can be dealt with by arranging it on the right side. At this time, a pair of hanging ropes 3
Hitch portions 14, 15 for locking 0, 40 to car 10
By disposing at the diagonal position of the car 10, the car 10 can be stably suspended.

As described above, each embodiment of the elevator according to the present invention has been described in detail. However, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, the drive motor 51 of the drive device 50 in each of the above-described embodiments is a gearless motor that directly drives the drive sheave 52 as shown in FIG. On the other hand, as shown in FIG. 11, if the drive motor 81 of the drive device 80 is configured to drive the drive sheave 83 via the planetary gear reducer 82, the drive motor 81 can be reduced in size or can be fixed. A higher output drive motor can be provided in the space. Further, since the drive shaft of the driving device 80 extends in the width direction of the counterweight, even if a space for disposing the speed reducer 82 between the drive sheave 83 and the drive motor 81 is secured, the thickness direction of the counterweight is Does not increase in size.

Further, a control device including an inverter and the like for operating the drive motors 51 and 81 is provided with a counterweight 20,6.
0, the weight of the control device is
And the space for providing the control device in another part can be eliminated.

[0062]

As is apparent from the above description, in the elevator of the present invention, since the thin flat rope is used as the lifting drive rope, the outer diameter of the drive sheave provided on the counterweight is greatly reduced. By arranging the rotation shaft of the drive sheave so as to extend along the width direction of the counterweight, the thickness of the counterweight does not increase. Further, if the drive shaft of the drive unit is made coaxial with the rotation axis of the drive sheave, the drive shaft also extends in the width direction of the balance weight, so that the dimensions of the drive unit and the drive sheave are accumulated and the thickness of the balance weight is measured. Does not become large. In addition, since the axial length of the driving device can be made sufficiently large in the width direction of the counterweight, even when the output of the driving device is increased to cope with an increase in the mass of the car and an increase in the elevating speed, the fishing device can be used. The thickness of the weight is not increased. Therefore, it is possible to reduce the gap between the side surface of the car and the inner wall surface of the hoistway necessary for disposing the counterweight, and to effectively utilize the space in the building. Further, since the thickness dimension of the counterweight can be suppressed to a small value, the degree of freedom in arranging the counterweight, the suspension rope, and the like can be increased.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an elevator according to a first embodiment of the present invention.

FIG. 2 is a plan view of the elevator shown in FIG.

FIG. 3 is a longitudinal sectional view of the counterweight shown in FIG. 1;

FIG. 4 is a sectional view of the lifting drive rope shown in FIG. 1;

FIG. 5 is a perspective view showing an elevator according to a second embodiment of the present invention.

FIG. 6 is a plan view of the elevator shown in FIG.

FIG. 7 is a perspective view showing an elevator according to a third embodiment of the present invention.

FIG. 8 is a plan view of the elevator shown in FIG. 7;

FIG. 9 is a perspective view showing an elevator according to a fourth embodiment of the present invention.

FIG. 10 is a perspective view showing a driving device having a gearless motor.

FIG. 11 is a perspective view showing a driving device having a speed reducer.

FIG. 12 is an elevator apparatus described in Japanese Patent Application Laid-Open No. 9-124259.

FIG. 13 is a longitudinal sectional view of the counterweight shown in FIG. 12;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pulley 2 Riding car 3 Balancing weight 4 Suspension rope 5 Elevating drive rope 6 Drive sheave 7 Driving device 8 Rotating shaft 9 Hoistway 10 Riding car 11,12 Car side guide rail 13 Entrance door 14,15 Hitch part 20 Balancing Weights 21, 22 Weight side guide rails 23, 24 Hitch portions 25, 27 Brackets 26, 28 Hitch portions 30 Suspended ropes 31, 32 Pulleys 40 Suspended ropes 41, 42 Pulleys 50 Driving device 51 Driving motor 52 Driving sheave 53 Rotating shaft 54 Follower Sheave 55 Elevating drive sheave 60 Counterweight 61 Weight side sheave 70 Suspension rope 71 Pulley 73, 75 Car bottom sheave 80 Drive 81 Drive motor 82 Planetary gear reducer 83 Drive sheave 100 An elevator according to the first embodiment of the present invention. 200 Elevator 3 of Second Embodiment According to Present Invention Elevator according to a fourth embodiment of the 0 present elevator 400 invention of the third embodiment according to the invention

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ikuo Asami 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu Office (72) Inventor Yoshinobu Ishikawa 1-Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu Plant (72) Inventor Hiroshi Sano 1-1-1, Shibaura, Minato-ku, Tokyo F-term (reference) 3F305 BB01 BB14 BC16 3F306 AA07 BA29 BB01 BB19 DA00

Claims (8)

[Claims] A suspension rope is wound around a pulley disposed at the top of a hoistway, a car is suspended at one end thereof, and a counterweight is suspended at the other end thereof to form a fishing bottle. A hoisting drive rope stretched vertically between the top and bottom of the hoistway is engaged with a drive sheave of a drive device mounted on the counterweight, and the drive sheave is rotated to lift and lower the hoist. An elevator for raising and lowering the car by raising and lowering the counterweight by engagement with a driving rope for driving, wherein the lifting drive rope is a thin flat rope, and the rotating shaft of the drive sheave is An elevator, wherein the elevator is arranged to extend along the width direction of the weight. 2. The elevator according to claim 1, wherein said drive device has a speed reducer for driving said drive sheave. 3. The device according to claim 1, wherein the counterweight is provided with a control device for controlling the driving device.
An elevator according to claim 1. 4. The pulley is disposed in a gap between a side surface of the car and an inner wall surface of the hoistway when the hoistway is viewed from above in a vertical direction. Item 4. The elevator according to any one of Items 1 to 3. 5. The suspension rope according to claim 1, wherein one end of the suspension rope is connected to a lower part of the car.
The elevator according to any one of the above. 6. A vehicle comprising a pair of hanging ropes, wherein a portion connecting one end of the hanging rope to the car and a portion connecting one end of the hanging rope to the car are connected to the car. The elevator according to claim 5, wherein the elevator is disposed so as to sandwich the center of gravity of the car in the front-rear direction or the left-right direction. 7. The vehicle further comprises a pair of under-car sheaves disposed below the car, and a weight-side sheave disposed on the counterweight, wherein the suspension rope is provided with the under-car sheave and the weight-side sheaves. The elevator according to any one of claims 1 to 4, wherein the car and the counterweight are suspended by 2: 1 roping via sheaves. 8. The elevator according to claim 7, wherein the pair of lower car sheaves are disposed so as to sandwich the center of gravity of the car in the front-rear direction or the left-right direction.