JP2002020062A - Elevator cage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator cage device facilitating the works of workers owing to a working space in a cage top part in maintenance works. SOLUTION: A ceiling body 4 forming a ceiling of a cage 1 is so constituted as to freely lift and is disposed in the top edge 3 of the cage 1, and an operating mechanism 14 has one side being engaged with the top edge 3 of the cage 1 and the other side being engaged with the ceiling body 4, energizes the ceiling body 4 to raise and retains it in a prescribed raised position generally. When the workers get in the top face 5 of the ceiling body 4 in maintenance works, the ceiling body 4 is lowered 14 by the weight of the workers against the raising energization force of the operating mechanism. The position of the top face 5 of the ceiling body 4 becomes lower than the top end of the cage 1 in an ordinary time to form the working space in the top face 5 of the ceiling body 4. This constitution can eliminate such failure as not lowering the ceiling body 4 in error and being in short in the height of the working space when the cage is raised.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator cab apparatus in which maintenance work is performed using a ceiling upper surface of a cab as a work space.

[0002]

2. Description of the Related Art FIGS. 19 and 20 are views showing a conventional elevator cab apparatus. FIG. 19 is a perspective view showing the cab in a normal state, and FIG. 20 is a state at the time of maintenance work in FIG. FIG. In the drawing, reference numeral 1 denotes a cab of an elevator, 2 denotes a wall of the cab 1, 3 denotes an upper edge of the cab 1 composed of an upper edge of the wall 2, and 4 denotes a ceiling body which is configured to be able to move up and down. The lighting device is provided at the upper edge 3 of the car 1 and forms the ceiling of the cab 1. 5 is the ceiling 4
It is the upper surface of.

[0003] Reference numeral 6 denotes a main part of a car (not shown) of an elevator, an upper beam of a car frame (not shown) supporting the car room 1, a suspension wheel 7 pivotally mounted on a lower surface of the upper beam 6, 8
Is a main rope which is wound around a suspension car 7 and suspends the cab 1;
Is a screw mechanism, which is constituted by a screw rod 10 screwed into the upper beam 6 and having a lower end engaged with the ceiling body 4 and a manual handle 11 fixed to the upper end of the screw rod 10.

The conventional elevator cab apparatus is constructed as described above, and the ceiling body 4 is provided so as to be able to move up and down with respect to the upper edge portion 3 of the cab 1. It is held in the raised position as shown in FIG. In this state, the upper surface 5 of the ceiling body 4 is disposed below the upper surface of the upper beam 6 by a distance A shown in FIG.

When the maintenance work is performed using the upper surface 5 of the ceiling body 4 as a work space, the ceiling handle 4 is moved to the lowered position as shown in FIG. It is arranged and the upper surface 5 of the ceiling body 4
Is disposed below the upper surface of the upper beam 6 at a distance B shown in FIG.

Incidentally, when the car moves to the highest position in the hoistway (not shown) of the elevator during normal times, the space height from the upper surface 5 of the ceiling body 4 to the upper surface of the hoistway decreases. There are many. In such a case, it becomes difficult for a worker to ride on the upper surface 5 of the ceiling body 4 and perform maintenance work.

Further, depending on the structure of the lighting device provided on the ceiling body 4, the height of the ceiling body 4 increases, and the height of the entire cab 1 also increases. Therefore, when the car moves to the highest position in the hoistway during normal times, the space height from the upper surface 5 of the ceiling body 4 to the top surface of the hoistway decreases. As a countermeasure against such a situation, the ceiling body 4 is lowered by the screw mechanism 9 during maintenance work.

[0008]

In the conventional elevator cab apparatus as described above, before the worker gets on the upper surface 5 of the ceiling body 4 during maintenance work, the screw mechanism 9 is operated to lower the ceiling body 4. Need to be done. However, it is conceivable that a worker may get into the upper surface 5 of the ceiling body 4 at the ascending position and move the car up to the highest position in the hoistway. In such a case, there is a problem that the height of the working space is insufficient at the position where the car has risen.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and provides an elevator cab apparatus in which a worker can easily perform maintenance work by using a work space above the cab during maintenance work. The purpose is to:

[0010]

SUMMARY OF THE INVENTION In an elevator cab apparatus according to the present invention, a ceiling body which is configured to be able to move up and down and is arranged at an upper edge of the cab and forms a ceiling of the cab, and one side of which is a car. The other side is engaged with the ceiling at the upper edge of the room, and the ceiling is urged upward to maintain the ceiling at a predetermined elevation position, and the ceiling is moved by the weight of the worker who gets on the ceiling. And an actuating mechanism for lowering the body.

Further, in the elevator cab apparatus according to the present invention, there is provided a safety fence disposed above a ceiling body;
When one side is engaged with the upper edge of the car room and the other side is engaged with the safety fence and the ceiling is held at the raised position, the safety fence is held at the lowered position, and the safety fence is placed at the raised position by lowering the ceiling. And an associated interlocking mechanism.

Also, in the elevator cab apparatus according to the present invention, the ceiling body is formed on a part of the plane of the ceiling plate of the cab and lowers from the upper edge of the cab to constitute a maintenance work space. Is provided.

Further, in the elevator cab apparatus according to the present invention, there is provided an upper end member which is provided at an upper edge portion of the cab and which forms a safety handrail for maintenance work by lowering the ceiling body.

Further, in the elevator cab apparatus according to the present invention, a safety fence for maintenance work is formed by the inner surface of the upper edge portion of the cab as the ceiling body descends.

Further, in the elevator cab apparatus according to the present invention, the door is closed to form an inner surface of an upper edge portion of the cab facing the edge portion of the ceiling body, and the door is opened to open an opening for maintenance work. A door device to be configured is provided.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 4 show an example of an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a main part of a cab in a normal state, and FIG. 2 is a view showing an operation mechanism in the elevator cab apparatus of FIG. 1, FIG. 3 is a diagram showing a state at the time of maintenance work in FIG. 2, and FIG. 4 is an enlarged view of a portion C in FIG. In the drawing, reference numeral 1 denotes a cab of an elevator, 2 denotes a wall of the cab 1, and 3 denotes an upper edge of the cab 1 composed of panels installed on the wall 2.

Reference numeral 4 denotes a ceiling body which is configured to be able to move up and down and is arranged at the upper edge 3 of the car room 1 to form a ceiling of the car room 1 and is provided with lighting equipment. Reference numeral 5 denotes an upper surface of the ceiling body 4, reference numeral 6 denotes a main part of an elevator car (not shown), an upper beam of a car frame 12 supporting the car room 1, and reference numeral 13 denotes a ceiling provided at a tip of the upper edge portion 3. The guide is arranged to face the side surface of the body 4.

Reference numeral 14 denotes an operating mechanism for urging the ceiling body 4 upward, and is provided on the inner surface of the upper edge portion 3 facing each other, and the lower end is pivotally attached to the lower portion of the upper edge portion 3 via a horizontal axis while being separated from each other. The first link 15 is disposed on the inner surface of the ceiling body 4 opposed to each other, and the upper end is pivotally mounted on the upper part of the ceiling body 4 via a horizontal axis, and is arranged apart from each other, and the lower end is closer to the lower end. A second link 16 pivotally connected to the longitudinal middle of one link 15 is provided.

The operating mechanism 14 includes a first link 15
A third link 17 connecting the upper ends of the second link 16, a spring and a damper, one end of which is pivotally connected to the lower end protruding part of the second link 16 and the other end of which is pivotally connected to the inner surface of the upper edge 3; Have been. Reference numeral 19 denotes a maintenance operation changeover switch, which is mounted on the inner surface of the upper edge portion 3 and is operated by the operating portion being pressed by the upper end of the first link 15 which has been rotated and lowered. Reference numeral 20 denotes a worker who works on the upper surface of the ceiling body 4.

In the elevator cab apparatus configured as described above, the ceiling body 4 is provided so as to be able to move up and down with respect to the upper edge 3 of the cab 1. A parallel crank mechanism is formed in the operating mechanism 14 by the first link 15, the second link 16 and the third link 17, and the lower end protruding portion of the second link 16 is pressed by the pressing device 18. As a result, the ceiling body 4 is urged in the ascending direction, and the lower end protruding portion of the ceiling body 4 is normally hooked on the guide 13 and held at the ascending position as shown in FIG.

When the maintenance work is performed using the upper surface 5 of the ceiling body 4 as a working space, when the worker 20 gets on the upper surface 5 of the ceiling body 4, the pressing device 18 of the operating mechanism 14 depends on the weight of the worker 20. The first link 15 and the like fall down against the upward urging force, and the ceiling body 4 descends as shown in FIG. Further, the maintenance operation changeover switch 19 is pressed by the upper end of the first link 15 due to the fall of the first link 15 or the like, and operates.

Thus, the position of the upper surface 5 of the ceiling body 4 is
, The elevator is automatically operated for maintenance and the upper surface 5 of the ceiling body 4 in a state where the elevator is lower than the upper end of the cab 1 in a normal state.
Is used as a work space for maintenance work. Therefore, in the elevator cab apparatus of FIGS. 19 and 20 described above, the operation of lowering the ceiling body 4 before starting the maintenance work is forgotten, and the problem that the height of the working space is insufficient at the position where the car is raised is solved. can do. Further, since the maintenance operation changeover switch 19 is pressed and operated by the worker 20 getting on the upper surface 5 of the ceiling body 4, the trouble in the maintenance work can be omitted.

Embodiment 2 FIG. 5 to 7 are views showing an example of another embodiment of the present invention. FIG. 5 is a longitudinal sectional view of a main part of a cab in a normal state, FIG. 6 is an enlarged view of a portion E in FIG. FIG. 6 is a diagram showing a state during maintenance work in the elevator cab apparatus of FIG. 5. Except for FIGS. 5 to 7, an elevator cab apparatus is configured similarly to the above-described embodiment of FIGS. 1 to 4. In the figure, the same reference numerals as those in FIGS.

Reference numeral 21 denotes a fixed column standing on the outer surface of the upper edge 3 facing each other, 22 denotes a guide roller pivotally mounted near the upper end of the fixed column 21 at a distance from each other, and 23 denotes a frame-shaped ceiling body 4. A safety fence 24 is disposed along the outer periphery of the guide fence 24. The guide fence 24 has a cross section in the form of a groove. I have.

Reference numeral 25 denotes a fixed column 2 between the two links in the longitudinal direction.
1. A link mechanism pivotally mounted at an intermediate position in the height direction of the X-axis to form an X-shape, and rollers 26 pivotally mounted at the lower ends of the respective links
Is provided at the upper edge of the ceiling body 4 and is movably fitted into a slot 27 arranged in a longitudinally horizontal direction, and a roller 28 pivotally attached to the upper end of each link is provided on the safety fence 23. And is movably fitted into a slot 29 whose length is horizontally arranged.

Reference numeral 30 denotes a pressing device which is constituted by a spring and a damper, and has one end pivotally connected to the upper end of the link of the link mechanism 25 and the other end pivotally connected to a mounting plate 31 projecting from the fixed column 21 in the horizontal direction. Is being worn. Reference numeral 32 denotes a maintenance operation changeover switch, which is mounted on the mounting plate 31 and has an operating portion disposed opposite the upper end of the link of the link mechanism 25, and is operated by being displaced by this link. Reference numeral 301 denotes an interlocking mechanism including the fixed column 21, the link mechanism 25, and the pressing device 30 as main members.

In the elevator cab apparatus constructed as described above, the ceiling body 4 is provided so as to be able to move up and down with respect to the upper edge portion 3 of the cab 1, and the operating mechanism 14 is provided. The body 4 is held in the raised position, and is lowered by the weight of the worker 20 during maintenance work. Therefore,
Although detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 4 can be obtained in the embodiment of FIGS.

The safety fence 2 is fixed via the fixed column 21, the link mechanism 25 and the pressing device 30, that is, the interlocking mechanism 301.
3 will be equipped. Then, while the ceiling body 4 is held at the raised position, the upper end side of the link of the link mechanism 25 is pressed by the pressing device 30, and the link mechanism 25 enters the wide-angle state. In this state, the safety fence 23 is held at the lowered position as shown in FIG.

When the worker 20 gets on the upper surface 5 of the ceiling body 4 during the maintenance work, the ceiling body 4 descends due to the weight of the worker 20. The lowering of the ceiling 4 opposes the pressing force of the pressing device 30 as shown in FIG.
Is in a narrow angle state, and the safety fence 23 is disposed at the ascending position. Thereby, the required function as the safety fence 23 in the maintenance work can be obtained. Also, the link mechanism 25
Due to the narrow angle displacement, the maintenance operation changeover switch 32 is pressed by the link of the link mechanism 25 and operates automatically, so that it is possible to save trouble in maintenance work.

Embodiment 3 8 to 10 also show an example of another embodiment of the present invention. FIG. 8 is a vertical sectional view of a main part of a cab in a normal state, FIG. 9 is an enlarged view of a portion F in FIG.
FIG. 10 is a diagram showing a state of the elevator cab apparatus of FIG. 8 during maintenance work. Except for FIGS. 8 to 10, the elevator cab apparatus is configured similarly to the above-described embodiment of FIGS. 1 to 4. In the figure, the same reference numerals as those in FIGS.

Reference numeral 33 denotes a first ceiling body, which is configured to be able to move up and down and is arranged at the upper edge 3 of the car room 1, forms a main part of the ceiling of the car room 1, and is provided with an indirect lighting device 34. I have. 3
5 is the upper surface of the first ceiling body 33, 36 is a through-hole provided in the center of the upper surface 35, 13 is a guide, provided at the tip of the upper edge 3 and facing the side surface of the first ceiling body 33. The first ceiling body 33 is provided in the through space 36 and is arranged to face a side surface of the ceiling body described later.

Reference numeral 331 denotes a second ceiling body, which is constructed in the same manner as the first ceiling body 33, and is fitted into the through space 36 of the first ceiling body 33 so as to be able to move up and down to form a telescopic pipe-like structure. An indirect lighting device 34 is provided to form another main part of the ceiling of the room 1, and a through space 3 is provided in the center of the upper surface 35.
6 and a guide 13 provided in the through space 36 and facing a side surface of a ceiling body described later.

Reference numeral 332 denotes a third ceiling body, which is a second ceiling body 331.
, Which is vertically fitted into the through space 36 of the second ceiling body 331 to form a telescopic pipe-like structure, forms another main part of the ceiling of the car room 1, and forms indirect lighting. An instrument 34 is provided. Although not shown, between the upper edge 3 of the car room 1 and the first ceiling 33, between the first ceiling 33 and the second ceiling 331, and between the second ceiling 331 and the third ceiling. 332, the above-mentioned operating mechanism 1
4 are provided.

In the elevator cab apparatus constructed as described above, the first ceiling body 33 and the second ceiling body 331 are also provided.
The third ceiling body 332 is normally held at the raised position by the operating mechanism 14 as shown in FIG. Further, during the maintenance work, the first ceiling body 33 and the like are lowered by the weight of the worker as shown in FIG. Also,
The lowering of the first ceiling body 33 and the like causes the maintenance operation changeover switch 19 to be pressed to operate. Further, the first ceiling body 33 and the like are held at the lowered position by a holding mechanism (not shown). Therefore, although detailed description is omitted, FIGS.
In this embodiment, the same operation as in the embodiment shown in FIGS. 1 to 4 can be obtained.

Embodiment 4 FIG. FIGS. 11 to 13 also show an example of another embodiment of the present invention. FIG. 11 is a longitudinal sectional view of a main part of a cab in a normal state, FIG. 12 is an enlarged view of a G part in FIG. FIG. 12 is a diagram showing a state during maintenance work in the elevator cab apparatus of FIG. 11. In addition, FIG.
Except for FIG. 13, an elevator cab apparatus is configured similarly to the above-described embodiment of FIGS. In the figure,
The same reference numerals as in FIGS. 1 to 4 denote corresponding parts, and reference numeral 3 denotes an upper edge portion of the cab 1 which is formed by an inner surface of a through hole provided in the ceiling plate 37 of the cab 1.

Numeral 38 denotes a cylindrical ceiling made of a spotlight type luminaire, which is fitted to the upper edge 3 of the car room 1 so as to be able to move up and down, and inside which a light source 39 and a reflector 40 are provided. I have. Reference numeral 41 denotes an upper surface of the ceiling body 38, and reference numeral 42 denotes a pressing mechanism provided on the upper edge portion 3, which is constituted by a sphere partially projecting from the inner surface of the upper edge portion 3 and a compression coil spring for urging the sphere in a protruding direction. ing. Reference numeral 43 denotes a recess provided on the outer surface of the upper edge 3 and arranged corresponding to the pressing mechanism 42.

In the elevator cab apparatus constructed as described above, the ceiling 38 is fitted to the upper edge 3 of the cab 1 so as to be able to move up and down. Then, it is held at the raised position as shown in FIG. Further, during maintenance work, the ceiling body 38 is pushed down by the worker 20, and the ceiling body 38 is lowered as shown in FIG.

Therefore, although detailed description is omitted, FIG.
In the embodiment shown in FIGS. 1 to 13, the same operation as the embodiment shown in FIGS. 1 to 4 can be obtained. After the maintenance work is completed, the ceiling body 38 is pulled up and returned to the state shown in FIG. 11, and the elevator is operated normally.

Embodiment 5 14 to 18 also show another example of the embodiment of the present invention. FIG. 14 is a vertical sectional view of a main part of a cab in a normal state, and FIG. 15 is a maintenance work in the elevator cab apparatus of FIG. FIG. 16 is a sectional view taken along line HH of FIG. 15, and FIG.
18 is a perspective view for explaining the opening / closing structure of the upper edge portion of the car cab in FIG. 18, and FIG. 18 is a view showing another state of the maintenance work in the elevator car apparatus of FIG. In the figure, the same reference numerals as those in FIGS.

Reference numeral 37 denotes a fixed ceiling plate, which forms the main part of the ceiling of the car room 1 and is provided with lighting equipment.
Reference numeral 401 denotes a ceiling body, which is configured to be able to move up and down and is arranged on the upper edge 3 of the car room 1, forms another main part of the ceiling of the car room 1, and is provided with lighting equipment. 44 is the upper edge 3 of the cab 1
The upper end member, which is provided at the upper end of the
Reference numeral 5 denotes a support member provided in the middle of the inner surface of the wall 2 in the height direction and having a longitudinally arranged length, and also serves as a handrail in the car room 1.

Reference numeral 46 denotes a rolling wheel which is pivotally connected to the lower side of the upper surface 5 of the ceiling body 401 via a horizontal axis to roll on the inner surface of the upper edge portion 3. Reference numeral 47 denotes an operation mechanism. A pulley 48 pivotally attached to the upper end member 44 via a horizontal axis, a winding drum 49, a hoist 50 mounted on the outer surface of the wall 2 and one end connected to the ceiling 401 are pulleys. The other end is formed by a hoisting cable 51 which is wound around 48 and connected to a winding drum 49.

Reference numeral 52 denotes a door device comprising a hinged door,
01, a part of the wall 2 plate of the upper edge 3 of the car room 1 corresponding to one side of the car room 1, and a lock 53 for closing the door is provided. 54 is a distribution box mounted on the hoistway wall 55, 56 is a hoistway device including a hoisting machine mounted on the hoistway wall 55,
Reference numeral 57 denotes a ladder leaning on the ceiling body 401 descending from the floor of the car room 1.

In the elevator cab apparatus configured as described above, the door device 52 is normally closed and locked by the locking device 53 at normal times. Further, the ceiling body 401 is wound up by the operating mechanism 47 and is held at the upper end of the upper edge 3 of the car room 1, that is, at the ascending position, as shown in FIG. During maintenance work, the operation mechanism 47 is operated by the operation of a maintenance operation changeover switch (not shown) by the worker 20.
Is urged, and the hoisting cable 51 is rewound.

As a result, the ceiling 401 descends below the upper end of the upper edge 3 of the car room 1 and is stopped by the support 45. As a result, as shown in FIG.
The upper surface 5 forms a working space. And
A safety handrail for maintenance work is formed by the upper end member 44 provided at the upper end of the upper edge portion 3 of the cab 1.

Further, a safety fence for maintenance work is formed by the inner surface of the upper edge 3 of the cab 1. Then, the ladder 57 lifts the worker 20 from the inside of the car room 1 to the upper surface 5 of the ceiling body 401 and performs maintenance work on equipment in the hoistway such as the distribution box 54 mounted on the hoistway wall 55 in the state shown in FIG. Done.

Further, the locking device 53 is unlocked from the state shown in FIG. 18, the door device 52 is opened, an opening for maintenance work is formed, and the door device 52 is mounted on the shaft wall 55 in the state shown in FIG. The maintenance work of the hoistway device 56 such as the hoist that has been performed is performed. Therefore, at the time of maintenance work, the worker 20 can get into the work space including the upper surface 5 of the ceiling body 401 which has descended from the inside of the car room 1, and the maintenance work can be facilitated.

The operating mechanism 47 can be constituted by a link mechanism, a cylinder mechanism and the like, and even in such a case, the operation of the embodiment shown in FIGS. 14 to 18 can be obtained. Further, by lowering the ceiling body 401, the ceiling body 401 is fixed to the fixed ceiling plate 37 as shown in FIG.
A space shown in FIG. 8 is formed, and this space can be used as an emergency exit. For this reason, it is not necessary to provide an emergency rescue exit in the cab 1, and the structure of the elevator cab apparatus can be simplified.

Further, the ceiling body 401 is lowered to form a space for maintenance work, a safety fence for maintenance work is automatically formed by the inner surface of the upper edge portion 3 of the cab 1, and the upper end member 44 forms A safety handrail for maintenance work is automatically formed. For this reason, maintenance work can be facilitated.

The operating mechanism 47 has the same construction as the operating mechanism 14 in the embodiment shown in FIGS. In this configuration, since the ceiling body 401 is pushed down by the weight of the worker 20 during maintenance work, the ceiling body 401 descends.
The same operation as the embodiment of FIG. 4 can be obtained.

[0050]

As described above, the present invention is constructed so as to be able to move up and down and arranged at the upper edge of the cab, and a ceiling body forming the ceiling of the cab, and one side at the upper edge of the cab. The other side is engaged with the ceiling body to raise and urge the ceiling body to always hold the ceiling body at a predetermined raised position, and to lower the ceiling body by the weight of the worker who gets on the ceiling body. Are provided.

Thus, when the worker gets on the upper surface of the ceiling body during the maintenance work, the weight of the worker lowers the ceiling body against the upward urging force of the operating mechanism. Thus, the upper surface of the ceiling body is disposed below the upper end of the cab in a normal state, and the maintenance work is performed using the upper surface of the ceiling body as a working space. Therefore, there is an effect of eliminating the problem that the maintenance work is performed without the ceiling body being lowered by mistake and the height of the working space is insufficient at the position where the car has risen.

Further, as described above, the present invention relates to a safety fence arranged above the ceiling body, one side being engaged with the upper edge of the cab and the other side being engaged with the safety fence, and the ceiling body being in the raised position. And an interlocking mechanism for holding the safety fence at the lowered position by holding the safety fence when it is held at the lower position, and disposing the safety fence at the raised position by lowering the ceiling body.

Thus, when the worker gets on the ceiling body upper surface during the maintenance work, the ceiling body is lowered and the safety fence is arranged at the ascending position by the function of the interlocking mechanism. As a result, the required function of the safety fence in maintenance work can be obtained,
This has the effect of saving time and effort during maintenance work.

Further, as described above, the present invention is provided with a ceiling body which is formed on a part of the plane of the ceiling plate of the cab and which is lower than the upper edge of the cab to constitute a maintenance work space. It is a thing.

Thus, the space formed between the lowered ceiling body and the ceiling plate of the cab can be used as an emergency rescue exit, and it is not necessary to provide an emergency rescue exit in the cab, and the elevator cab is not required. This has the effect of simplifying the structure of the device.

Further, as described above, the present invention is provided with the upper end member provided at the upper edge of the cab and forming the safety handrail for maintenance work by lowering the ceiling body.

As a result, the ceiling body is lowered to form a space for maintenance work, and a safety handrail for maintenance work is automatically formed. This has the effect of facilitating maintenance work.

Further, as described above, the present invention is provided with an upper edge portion of a cab in which a safety fence for maintenance work is formed by an inner surface by lowering a ceiling body.

As a result, the ceiling body is lowered to form a space for maintenance work, and a safety fence for maintenance work is automatically formed by the inner surface of the upper edge of the cab. This has the effect of facilitating maintenance work.

As described above, according to the present invention, the door is closed to form the inner surface of the upper edge of the cab facing the edge of the ceiling, and the door is opened to form an opening for maintenance work. A door device is provided.

As a result, the ceiling body is lowered to form a space for maintenance work, and the door device on the inner surface of the upper edge of the cab facing the edge of the ceiling body is opened to open an opening for maintenance work. A part is formed. Then, the maintenance work of the hoistway equipment such as the hoist mounted on the hoistway wall can be performed through the opening, and there is an effect that the maintenance work is facilitated.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a longitudinal sectional view of a main part of a cab in a normal state.

FIG. 2 is an equivalent view of FIG. 1 showing an operation mechanism in the elevator cab apparatus of FIG. 1;

FIG. 3 is a diagram showing a state during maintenance work in FIG. 2;

FIG. 4 is an enlarged view of a portion C in FIG. 3;

FIG. 5 is a view showing the second embodiment of the present invention, and is a longitudinal sectional view of a main part of the cab in a normal state.

FIG. 6 is an enlarged view of a portion E in FIG. 5;

FIG. 7 is a diagram showing a state of the elevator cab apparatus of FIG. 5 during maintenance work.

FIG. 8 is a view showing a third embodiment of the present invention, and is a longitudinal sectional view of a main part of a cab in a normal state.

FIG. 9 is an enlarged view of a portion F in FIG. 8;

FIG. 10 is a diagram showing a state during maintenance work in the elevator cab apparatus of FIG. 8;

FIG. 11 is a view showing a fourth embodiment of the present invention, and is a longitudinal sectional view of a main part of a cab in a normal state.

FIG. 12 is an enlarged view of a portion G in FIG. 11;

FIG. 13 is a diagram showing a state of the elevator cab apparatus of FIG. 11 at the time of maintenance work.

FIG. 14 is a view showing a fifth embodiment of the present invention, and is a longitudinal sectional view of a main part of a cab in a normal state.

FIG. 15 is a diagram showing a state at the time of maintenance work in the elevator cab apparatus of FIG. 14;

FIG. 16 is a sectional view taken along line HH of FIG. 15;

FIG. 17 is a perspective view illustrating an opening / closing structure of an upper edge portion of the cab in FIG.

FIG. 18 is a diagram showing a state during another maintenance work in the elevator cab apparatus of FIG. 14;

FIG. 19 is a diagram showing a conventional elevator cab apparatus, and is a perspective view showing a cab in a normal state by vertically cutting the cab.

FIG. 20 is a diagram showing a state at the time of maintenance work in FIG. 19;

[Explanation of symbols]

1 cab, 3 upper edge, 4 ceiling, 401 ceiling, 14 operating mechanism, 23 safety fence, 301 interlocking mechanism, 37 ceiling panel, 44 top material, 52 doors.

Claims (6)

[Claims] 1. A ceiling body which is configured to be able to move up and down and is arranged at an upper edge of a cab and forms a ceiling of the cab, wherein one side is engaged with the upper edge and the other side is engaged with the ceiling body. An elevator car having an operating mechanism for urging the ceiling body upward, always holding the ceiling body at a predetermined elevation position, and lowering the ceiling body by the weight of an operator who has got on the ceiling body; Room equipment. 2. A safety fence arranged above the ceiling body, one side of which is engaged with the upper edge of the cab and the other side is engaged with the safety fence, and the safety fence is provided when the ceiling body is held at the raised position. The elevator car room apparatus according to claim 1, further comprising: an interlocking mechanism that holds the safety fence at an ascending position by lowering the ceiling body at a descending position. 3. A maintenance work space, wherein the ceiling body is formed in a part of a plane of a ceiling plate of the cab and lower than an upper edge of the cab. Item 8. The elevator cab apparatus according to item 1. 4. The elevator cab apparatus according to claim 3, further comprising an upper end member provided at an upper edge of the cab and forming a safety handrail for maintenance work by lowering a ceiling body. 5. The safety fence for maintenance work is formed on the inner surface of the upper edge portion of the cab by lowering the ceiling body. Elevator cab equipment. 6. A door device which is closed to form an inner surface of an upper edge portion of a cab facing an edge portion of a ceiling body and which is opened to form an opening for maintenance work. The elevator cab apparatus according to claim 5, wherein