JP6946240B2 - How to install the simple ceiling in the elevator car room and the simple ceiling in the elevator car room - Google Patents

Description

The present disclosure relates to a simple ceiling of an elevator car room and a method of mounting a simple ceiling of an elevator car room.

Regarding the elevator already installed in the building, the ceiling repair work to remove the conventional ceiling and replace it with a new ceiling in the modernization to renew the design of the car room and the indoor equipment may be the work on the car without the ceiling. be. In order to reduce the load, for example, in Patent Document 1, as a method of repairing the ceiling of an elevator car room, the ceiling center plate and the ceiling center plate are sandwiched between the ceiling center plate and the left and right sides of the car room from which the ceiling has been removed. A method is described in which three parts of a pair of ceiling end plates to be arranged are joined to each other to form a rectangular ceiling plate as a whole.

Further, as a technique related to the present disclosure, in Patent Document 2, when the ceiling lighting plate at the center of the ceiling of the elevator car room is divided into two, the divided portion at the center of the ceiling lighting plate is bent by its own weight. It points out that it is a problem. Here, the outer periphery of each of the two panels obtained by dividing the ceiling lighting plate into two is surrounded by a frame material having strong bending rigidity in the vertical direction, and the side surfaces of the frame materials of the adjacent panels are in contact with each other, while enhancing the design. It suppresses the division point from bending due to its own weight.

Japanese Unexamined Patent Publication No. 2003-252550 Japanese Unexamined Patent Publication No. 1-203192

When replacing the ceiling of an elevator car, removing the conventional ceiling and installing a new ceiling without a ceiling involves hanging the ceiling with a chain and lowering the removed ceiling into the car room, which is troublesome. It is necessary to be careful as a work at a high place. It is conceivable to leave the conventional ceiling as it is and provide a new ceiling below it, but in that case, the ceiling height of the car room becomes low and the car room space becomes narrow. Therefore, there is a demand for a simple ceiling of an elevator car room in which the ceiling of the car room can be renewed by a relatively simple method without changing the ceiling height of the car room, and a method of attaching the simple ceiling.

The simple ceiling of the elevator car room according to the present disclosure is a simple ceiling newly arranged below the conventional ceiling with the same ceiling height in the elevator car room, and has a size that can be moved in the vertical direction of the car room. A pair of mounting brackets, one with a simple ceiling body, one mounting bracket that slides on one end of the simple ceiling body, and the other mounting bracket that slides on the other end of the simple ceiling body. The one mounting bracket is provided with a metal fitting, and the one mounting bracket projects outward from one end side of the simple ceiling main body while holding one end side of the simple ceiling main body, and the other mounting bracket is provided on the other end side of the simple ceiling main body. While holding, it projects outward from the other end side of the simple ceiling body, and the overhanging part of one mounting bracket and the overhanging part of the other mounting bracket are sandwiched between the top of the cab and the conventional ceiling, respectively. It is fixed.

According to the above configuration, the simple ceiling includes a simple ceiling main body portion and two mounting brackets that are slidable on both ends of the simple ceiling main body portion. Each of the two mounting brackets, which form a pair, overhangs from both ends of the simple ceiling body to the outside while holding the simple ceiling body, and the overhangs on both ends are the top of the car room and the conventional ceiling. It is sandwiched between and fixed. When there is no simple ceiling between the top of the car room and the conventional ceiling, the ceiling height of the car room is the height of the conventional ceiling on the top of the car room. When the simple ceiling is sandwiched between the top of the car room and the conventional ceiling, the ceiling height of the car room is the height of the simple ceiling resting on the top of the car room, and there is only the conventional ceiling. It is the same as the ceiling height of the case. In this way, the ceiling height can be made the same and the ceiling of the cab can be renewed by a relatively simple method of leaving the conventional ceiling.

In the simple ceiling of the elevator car room according to the present disclosure, one of the one mounting bracket and the other mounting bracket is an upper plate portion, a lower plate portion arranged at a predetermined distance from the upper plate portion, and one of the upper plate portions. The simple ceiling main body is slidably arranged between the lower surface of the upper plate and the upper surface of the lower plate, including the vertical plate that connects one end of the lower plate and the end in an integrated manner. It is preferable that the upper surface faces the ceiling and the lower surface of the lower plate portion faces the top of the car chamber.

According to the above configuration, each of the one-side mounting bracket and the other mounting bracket has a relatively simple shape in which the upper plate portion and the lower plate portion are integrally connected by the vertical plate portion. As described above, the simple ceiling can be arranged between the top of the car room and the conventional ceiling by using the mounting bracket having a relatively simple shape.

In the simple ceiling of the elevator car room according to the present disclosure, as a pair of mounting brackets, a left mounting bracket that can slide on one end side along the width direction of the simple ceiling body portion and a left mounting bracket that can slide along the width direction of the simple ceiling body portion. The right mounting bracket that slides on the other end side, the left and right mounting brackets that form a pair with two, and the front mounting bracket that slides on one end side along the depth direction of the simple ceiling body, and simple It is preferable to provide a rear mounting bracket that is slidable on the other end side along the depth direction of the ceiling body portion, and a pair of front and rear mounting brackets that are paired with each other.

According to the above configuration, in order to hold the simple ceiling main body and project it while sandwiching it between the top of the cab and the conventional ceiling to fix it, the mounting brackets in each of the four directions of the simple ceiling main body in the left-right direction and the front-rear direction. Is used. This strengthens the fixing of the simple ceiling.

The simple ceiling of the elevator cab according to the present disclosure is provided with a lighting device including at least one lighting block, and all the lighting blocks are integrated with either the left mounting bracket, the right mounting bracket, the front mounting bracket or the rear mounting bracket. It is preferable that the ceiling is provided.

When the simple ceiling lighting device is installed in the simple ceiling main body, the mounting bracket slides with respect to the simple ceiling main body. Therefore, if the lighting device protrudes from the lower surface of the simple ceiling main body, it interferes with the sliding mounting bracket. I have something to do. According to the above configuration, since all the lighting blocks constituting the lighting device are integrated with one of the mounting brackets, there is no interference problem between the lighting device and the mounting bracket, and the mounting bracket can be slid. Does not damage the luminaire.

In the simple ceiling of the elevator car room according to the present disclosure, it is preferable that the simple ceiling main body portion is divided into two partial ceiling portions.

According to the above configuration, since the simple ceiling main body is divided, the simple ceiling mounting work can be performed in two steps, and the mass lifted by the worker in one mounting work can be reduced. As a result, for example, even when the mass of the simple ceiling is large, it is not necessary to use a chain.

The method of attaching the simple ceiling of the elevator car room according to the present disclosure is a method of installing a new simple ceiling on the lower side of the conventional ceiling by making the ceiling height in the elevator car room the same, and the simple ceiling is the simple ceiling main body. The cab consists of a pair of mounting brackets, one that slides on one end side of the simple ceiling body and the other mounting bracket that slides on the other end of the simple ceiling body. A process of loosening the fastening member that fastens the top and the conventional ceiling so that the conventional ceiling can be moved upward from the top of the car room, and a conventional ceiling pushing process of pushing the conventional ceiling upward from the top of the car room. A simple ceiling placement process in which a simple ceiling is placed between the pushed-up conventional ceiling and the top of the car room, and a simple ceiling is sandwiched between the top of the car room and the conventional ceiling, and the fastening member is tightened to fix the simple ceiling. Including a fixing step.

According to the above configuration, it is relatively easy to loosen the fastening member that fastens the top of the car room and the conventional ceiling, push up the conventional ceiling, sandwich the simple ceiling between the top of the car room and the conventional ceiling, and tighten with the fastening member. You can renew the ceiling of the car room in any way.

In the method for mounting a simple ceiling in an elevator car room according to the present disclosure, one mounting bracket constituting the simple ceiling is brought into contact with one end of the simple ceiling main body, and the other mounting bracket is brought into contact with the other end of the simple ceiling main body. The simple ceiling in the pushed state is used as the simple ceiling in the pushed state, and the simple ceiling in the pushed state has a size that can be moved in the vertical direction in the car room. Pushing up in the car room and pushing up the conventional ceiling through the simple ceiling in the pushed state The simple ceiling placement process is a process of holding one end side of the simple ceiling body with respect to the mounting bracket. The simple ceiling body is projected outward from one end side, and the other mounting bracket is projected outward from the other end side of the simple ceiling body while holding the other end side of the simple ceiling body. The overhanging part of the mounting bracket and the overhanging portion of the other mounting bracket are each arranged between the top of the car chamber and the conventional ceiling, and the fixing process is a process of arranging the overhanging portion of the pair of mounting brackets in the car chamber. It is preferable that the step is to fix the simple ceiling by tightening the fastening member while sandwiching it between the top and the conventional ceiling.

The above configuration adopts a method of lifting the pushed-in state simple ceiling in the car room and arranging the mounting bracket between the top of the car room and the conventional ceiling. According to the above configuration, the pushed-in simple ceiling has a size that allows it to move up and down in the car room, and for example, a mass that can be lifted by a worker by hand eliminates the need for work with a chain. Therefore, the fastening member that fastens the top of the car room and the conventional ceiling is loosened, the conventional ceiling can be moved upward from the top of the car room, and the simple ceiling in the pushed state is pushed upward in the car room to simplify the pushed state. The conventional ceiling is pushed upward through the ceiling. Then, the one mounting bracket holds one end side of the simple ceiling main body and projects outward from one end side of the simple ceiling main body, and the other mounting bracket holds the other end side of the simple ceiling main body. However, the simple ceiling body is projected outward from the other end side. Each of the overhanging portions from both ends of the simple ceiling main body is sandwiched between the top of the car room and the conventional ceiling, and the fastening member is tightened to fix the simple ceiling. In this way, the simple ceiling in the pushed state can be used to arrange the simple ceiling by a relatively simple method without changing the ceiling height of the cab.

In the method of mounting the simple ceiling of the elevator car room according to the present disclosure, the simple ceiling main body has a size that can be moved in the vertical direction in the car room, and in the conventional ceiling pushing process, the simple ceiling main body is moved in the car room. It is a process of pushing up to the upper side and pushing up the conventional ceiling to the upper side through the simple ceiling main body, and the simple ceiling arrangement process is a process of pushing up the conventional ceiling in the gap formed between the top of the car room and the conventional ceiling by the conventional ceiling pushing process. Under predetermined arrangement conditions so that it does not protrude into the car chamber, a pair of mounting brackets separated from the simple ceiling body is placed, and the pair of mounting brackets is lifted. With respect to, one mounting bracket is moved to the car room side to hold one end side of the simple ceiling main body so that it projects outward from one end side of the simple ceiling main body, and the other mounting bracket is placed on the car chamber side. While holding the other end side of the simple ceiling main body, it is projected outward from the other end side of the simple ceiling main body. Each part is arranged between the top of the car room and the conventional ceiling, and the fixing process is a fastening member while sandwiching the overhanging part of the pair of mounting brackets between the top of the car room and the conventional ceiling. It is preferable that the step is to tighten and fix the simple ceiling.

In the above configuration, a mounting bracket is arranged in advance between the top of the car room and the conventional ceiling, and then the simple ceiling main body is lifted in the car room. According to the above configuration, the size of the simple ceiling main body is set so that it can be moved in the vertical direction in the car room, and the mass is set so that the worker can lift it by hand, so that the work in the chain becomes unnecessary. Therefore, the fastening member that fastens the top of the car room and the conventional ceiling is loosened so that the conventional ceiling can be moved upward from the top of the car room, and the simple ceiling main body is pushed upward in the car room. Then, a pair of mounting brackets separated from the simple ceiling main body are arranged in the gap formed between the conventional ceiling by pushing it upward through the simple ceiling main body and the top of the cab. Then, with the simple ceiling body lifted, for the pair of mounting brackets, move one mounting bracket to the cab side and hold one end side of the simple ceiling body while holding one end of the simple ceiling body. It shall be in a state of protruding outward from the end side. Similarly, the other mounting bracket is moved to the car chamber side to hold the other end side of the simple ceiling main body portion and project outward from the other end side of the simple ceiling main body portion. The overhanging portions from both ends of the simple ceiling main body are sandwiched between the top of the car room and the conventional ceiling, and the fastening members are tightened to fix the simple ceiling. In this way, by using the simple ceiling main body and the mounting bracket separately, the simple ceiling can be arranged by a relatively simple method without changing the ceiling height of the car room.

According to the simple ceiling of the elevator car room having the above configuration and the mounting method thereof, the ceiling of the car room can be renewed by a relatively simple method without changing the ceiling height of the car room.

It is a figure which shows the car which has the conventional ceiling which is the attachment target of the simple ceiling of the elevator car room which concerns on embodiment. FIG. 1A is a top view, and FIG. 1B is a cross-sectional view taken along the line BB of FIG. 1A. It is a figure which shows the car which attached the simple ceiling of the elevator car room which concerns on 1st Embodiment. FIG. 2A is a top view, and FIG. 2B is a cross-sectional view taken along the line BB of FIG. 2A. Regarding the simple ceiling according to the first embodiment, it is a block diagram of a separated state simple ceiling in a state where four mounting brackets and a simple ceiling main body are separated. FIG. 3A is a bottom view of the entire separated simple ceiling, FIG. 3B is a cross-sectional view taken along line BB of FIG. 3A, and FIG. 3C is of FIG. 3A. It is sectional drawing along the CC line. It is a block diagram of the push-in state simple ceiling in the state which the simple ceiling main body part was pushed into four mounting brackets about the simple ceiling which concerns on 1st Embodiment. FIG. 4A is a bottom view of the entire pushed-in simple ceiling, FIG. 4B is a cross-sectional view taken along line BB of FIG. 4A, and FIG. 4C is of FIG. 4A. It is sectional drawing along the CC line. Regarding the simple ceiling according to the first embodiment, it is a block diagram of a simple ceiling in an overhanging state in which four mounting brackets hold the simple ceiling main body and project from both ends of the simple ceiling main body. 5 (a) is a bottom view of the entire overhanging simple ceiling, FIG. 5 (b) is a cross-sectional view taken along line BB of (a), and FIG. 5 (c) is (a). It is a cross-sectional view along the CC line of. It is a flowchart which shows the procedure about the simple ceiling mounting method of the elevator car room which concerns on 1st Embodiment. It is a flowchart which shows the more detailed procedure about the simple ceiling mounting method of the elevator car room which concerns on 1st Embodiment. It is a figure which shows the process of loosening the fastening member of the conventional ceiling in the elevator which has a conventional ceiling in the procedure of FIG. 7. In the procedure of FIG. 7, the process of pushing up the pushed-in state simple ceiling upward in the car room is shown in the figure. It is a figure which shows the relationship between a car room and a simple ceiling in a pushed state, using the figure seen from the X direction of FIG. It is a figure which shows the process of pushing up the conventional ceiling upward through the push-in state simple ceiling in the procedure of FIG. 7. In the procedure shown in FIG. 7, the mounting brackets are projected outward from both ends of the pushed-in simple ceiling to make the overhanging simple ceiling, and the overhanging simple ceiling is sandwiched between the top of the car room and the conventional ceiling and fastened. It is a figure which shows the process of tightening and fixing a member. Regarding the simple ceiling according to the second embodiment, it is a block diagram of a separated state simple ceiling in a state where four mounting brackets and a simple ceiling main body are separated. Regarding the simple ceiling according to the second embodiment, it is a configuration diagram of a simple ceiling in an overhanging state in which four mounting brackets hold the simple ceiling main body and project from both ends of the simple ceiling main body. It is a flowchart which shows the detailed procedure about the simple ceiling mounting method of the elevator car room which concerns on 2nd Embodiment. It is a figure which shows the relationship between a car room, a simple ceiling part, and a mounting bracket by using the figure which looked at the ceiling side from the car room in the procedure of FIG.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. In the following, both the planar shape of the car and the planar shape of the ceiling will be described as squares, but this is an example for explanation. In a simple ceiling composed of a simple ceiling main body and a mounting bracket, a flat shape other than a square may be used as long as the mounting bracket slides with respect to the simple ceiling main body. For example, depending on the specifications of the elevator, a car and a ceiling having a rectangular planar shape may be used. In some cases, a car and a ceiling having a planar shape other than a square or a rectangle may be used. In the following, the overhanging direction of the flange portion facing the ceiling portion at the top of the side wall portion of the car chamber will be described as the outer direction of the car chamber. This is an example for explanation, and if the simple ceiling main body is pushed into the mounting bracket and the simple ceiling main body can be moved in the vertical direction in the car room, the side wall portion. The overhanging direction of the flange portion at the top of the car may be toward the inside of the car chamber.

In the following, the lighting device will be described as an element attached to the ceiling of the car, and other elements will not be described in particular, but this is for convenience of explanation only. Elements such as a lighting control device, a ventilation fan, an air conditioner, a car door opening / closing mechanism, a guide mechanism with a guide rail, and a safety fence surrounding a work area may be arranged on the car on the upper side of the ceiling. Further, in the following, as the mounting brackets for the simple ceiling, a total of four mounting brackets, a pair of left and right mounting brackets and a pair of front and rear mounting brackets, will be used. Is an example for. Depending on the specifications of the elevator such as the rigidity of the simple ceiling, two mounting brackets may be used in total, whichever is a pair of left and right mounting brackets or a pair of front and rear mounting brackets.

The shapes, materials, the number of fastening members, etc. described below are examples for explanation, and can be appropriately changed according to the specifications of the simple ceiling of the elevator car room. In the following, similar elements will be designated by the same reference numerals in all drawings, and duplicate description will be omitted.

FIG. 1 is a diagram showing a car 9 having a conventional ceiling 40 to which a simple ceiling 50 of an elevator car room is attached. FIG. 2 is a diagram showing a car 10 having a simple ceiling 50 in an elevator car room. Hereinafter, unless otherwise specified, the conventional ceiling 40 of the elevator car room is referred to as a conventional ceiling 40, and the simple ceiling 50 of the elevator car room is referred to as a simple ceiling 50. In each of the views of FIGS. 1 and 2, (a) is a top view, and (b) is a cross-sectional view taken along the line BB of (a).

The cars 9 and 10 are car portions for carrying passengers in an elevator, which is a passenger carrier that moves up and down in a hoistway that runs vertically through a building (not shown). The cars 9 and 10 include a car room body 12 for accommodating passengers, a lower frame 14 for supporting the car room body 12 from below, and a ceiling portion 30 arranged at the top of the car room body 12. The ceiling portion 30 in the car 9 is a conventional ceiling 40, and the ceiling portion 30 in the car 10 is a composite of the conventional ceiling 40 and the simple ceiling 50.

In FIGS. 1 and 2, orthogonal vertical directions, depth directions, and width directions are shown. The vertical direction is the direction in which the hoistway extends, and is the vertical direction of the cars 9 and 10. The direction toward the upper floors of the building is the upper side, and the direction toward the lower floors is the lower side. The vertical dimensions along the vertical direction are indicated by H. The depth direction is a direction parallel to the direction from the landing of the building to the hoistway, and the landing direction in which the car doors are provided in the cars 9 and 10 is called the front side, and the direction opposite to the landing direction is called the rear side. Depth dimensions along the depth direction are indicated by L. Looking at the cars 9 and 10 from the landing of the building, the width direction is the left side on the left side and the right side on the right side. The width dimension along the width direction is indicated by W. The same applies to the following figure.

The car chamber body 12 includes a floor portion 16 and a side wall portion 18. The space surrounded by the floor portion 16, the side wall portion 18, and the ceiling portion 30 is the indoor space of the cab room 20 for accommodating passengers. The side wall portion 18 is composed of a plurality of panel bodies surrounding the interior space of the car chamber 20, and includes a flange portion 22 that projects outward at the outer peripheral portion of the top portion. The flange portion 22 and the ceiling portion 30 are fastened by a plurality of fastening members. In the examples of FIGS. 1 and 2, the number of fastening members is 12. As the fastening member, a fastening bolt 32 and a nut 34 are used. The fastening bolt 32 has a hexagonal head 31 and a shaft portion 33 having a screw portion on the tip end side. The outer diameter, which is the thread diameter of the male thread portion, is shown as d33. The nut 34 has a female threaded portion that meshes with the threaded portion of the fastening bolt 32. The arrangement position of the fastening bolt 32 measured from the left end of the ceiling portion 30 and the arrangement position of the fastening bolt 32 measured from the right end are W32. The arrangement position of the fastening bolt 32 measured from the front end of the ceiling portion 30 and the arrangement position of the fastening bolt 32 measured from the rear end are L32. Here, W32 = L32.

In the cars 9 and 10, the plane shape of the car chamber 20 is square. That is, assuming that the depth dimension of the car chamber 20 is L20 and the width dimension is W20, L20 = W20. The flange portion 22 projects outward from the car chamber 20 with a constant amount of protrusion along the outer peripheral direction. The planar shape of the cars 9 and 10 is square. That is, the depth dimension of the planar shape in the car 9 and 10 is (L20 + L22 + L22), where the amount of protrusion of the flange portion 22 along the depth direction is L22. Similarly, the width dimension of the planar shape in the car 9 and 10 is (W20 + W22 + W22), where the amount of protrusion of the flange portion 22 along the width direction is W22. Since L20 = W20 and L22 = W22, (L20 + L22 + L22) = (W20 + W22 + W22).

The conventional ceiling 40 is composed of a panel plate whose rigidity is increased by bending the outer periphery of the metal plate into a frame shape. As the metal plate, an iron plate is used. An example of the procedure of folding the outer periphery into a frame shape is to form a material iron plate into a square, bend each of the four sides upward, and further bend the bent part inside the square at a predetermined panel height position. A flange portion 42 having a predetermined width is formed into a frame shape. The predetermined width dimension of the flange portion 42 on the uppermost surface of the conventional ceiling 40 may be the same as the overhang amount of the flange portion 22 at the top of the side wall portion 18 of the car 9 (W22 = L22).

An appropriate decorative board is stretched on the lower surface of the panel board of the conventional ceiling 40 facing the car room 20 in order to enhance the design of the ceiling of the car room 20. The conventional ceiling 40 has a lighting device 44 for the car chamber 20 in the central portion of the flat shape. The lighting device 44 is conventionally attached by providing an opening for illumination light in the panel plate of the ceiling 40 and via an appropriate electrical insulating material. In FIG. 1B, the ceiling height, which is the vertical dimension from the floor portion 16 to the lower surface of the conventional ceiling 40 in the car chamber 20, is shown as H20. Since the lower surface of the conventional ceiling 40 is supported by the upper surface of the flange portion 22, the ceiling height H20 in the car 9 is the vertical dimension from the floor portion 16 to the upper surface of the flange portion 22.

In the car 10 shown in FIG. 2, a simple ceiling 50 is sandwiched between the flange portion 22 on the outer peripheral portion of the top of the side wall portion 18 and the conventional ceiling 40, and these are fixed to each other by a plurality of fastening members. NS. The fastening member is the same as the conventional ceiling 40 of FIG. 1 fastened to the flange portion 22. In order to share the fastening member in the car 9 and 10, the shaft portion 33 including the screw portion of the fastening bolt 32 is set to a length suitable for sandwiching the simple ceiling 50.

[First Embodiment] The simple ceiling 50 has four mounting brackets 72, 74, 76 that project outward from the end of the simple ceiling main body 60 while holding the simple ceiling main body 60 and the simple ceiling main body 60. , 78 is included. The four mounting brackets 72, 74, 76, and 78 are slidable with respect to the simple ceiling body 60. Therefore, the simple ceiling 50 can take three states due to the relative relationship between the simple ceiling main body 60 and the four mounting brackets 72, 74, 76, and 78. The first state is a state in which the simple ceiling main body 60 and the four mounting brackets 72, 74, 76, 78 are spatially separated, and this is referred to as a separated state simple ceiling 52. In the second state, the simple ceiling main body 60 is pushed into the four mounting brackets 72, 74, 76, 78, and the simple ceiling 50 has the smallest planar shape. Call. The third state is a state in which the four mounting brackets 72, 74, 76, and 78 project outward from both ends of the simple ceiling body 60 while holding the simple ceiling body 60. It is called a simple ceiling 56.

In the car 10, the simple ceiling 50 sandwiched between the flange portion 22 and the conventional ceiling 40 has four mounting brackets 72, 74, 76, and 78 holding the simple ceiling main body 60 while holding the simple ceiling main body 60. It is a simple ceiling 56 in an overhanging state that projects outward from both ends of the 60. In the overhanging state simple ceiling 56, an overhanging portion in which four mounting brackets 72, 74, 76, and 78 project from the simple ceiling main body portion 60 is arranged on the upper surface of the flange portion 22. Therefore, the ceiling height of the simple ceiling 50 in the car 10 is the vertical dimension from the floor portion 16 in the car chamber 20 to the upper surface of the flange portion 22, which is the same as the ceiling height H20 in the car 9.

FIG. 2B shows a two-dot chain line with reference to the separated state simple ceiling 52 and the pushed state simple ceiling 54. In the separated state simple ceiling 52, the simple ceiling main body 60 has a size that allows it to move in the vertical direction in the car chamber 20. Further, the pushed-in simple ceiling 54 also has a size that allows it to move in the vertical direction in the car chamber 20.

Hereinafter, the configurations of the separated state simple ceiling 52, the pushed state simple ceiling 54, and the overhanging state simple ceiling 56, which are the three states of the simple ceiling 50, will be described in detail with reference to FIGS. 3 to 6.

FIG. 3 is a configuration diagram of the separated state simple ceiling 52. The simple ceiling 50 is composed of a simple ceiling main body 60 and four mounting brackets 72, 74, 76, 78, but the separated state simple ceiling 52 is in a state in which these are spatially separated from each other. 3A is a bottom view, FIG. 3B is a cross-sectional view taken along line BB in FIG. 3A, and FIG. 3C is a cross-sectional view taken along line CC in FIG. It is a figure.

Similar to the conventional ceiling 40, the simple ceiling main body 60 is composed of a panel plate in which the outer periphery of the metal plate is bent into a frame shape to increase the rigidity. As the metal plate, an iron plate is used. An example of the procedure of folding the outer periphery into a frame shape is to form a material iron plate into a square, bend each of the four sides upward, and further bend the bent part inside the square at a predetermined panel height position. A flange portion 61 having a predetermined width is formed in a frame shape. The predetermined width dimension of the flange portion 61, which is the uppermost surface of the simple ceiling main body portion 60, is set to a size suitable for the mounting brackets 72, 74, 76, and 78 to slide. The width dimension W60 of the simple ceiling main body 60 is the same as the depth dimension L60. The thickness of the panel plate of the simple ceiling main body 60 is shown as t60, and the vertical dimension of the simple ceiling main body 60 in the vertical direction is shown as H60.

The simple ceiling main body 60 is divided into two partial ceilings 62 and 64. The two partial ceilings 62 and 64 are also composed of panel boards. In the example of FIG. 3, the simple ceiling main body 60 is divided into a left partial ceiling 62 and a right partial ceiling 64 with the CC line, which is the center line along the depth direction, interposed therebetween. The method of attaching the simple ceiling 50 to the car 10 will be described later, but the work of lifting the pushed-in state simple ceiling 54 or the simple ceiling main body 60 in the car room 20 is performed. By dividing the simple ceiling main body 60 into two, the work of lifting the pushed-in state simple ceiling 54 or the simple ceiling main body 60 can be performed in two steps, and the load on the worker is reduced.

For example, in the case of the work of lifting the simple ceiling main body 60, the worker lifts the partial ceiling 62 to perform a predetermined mounting work, and then lifts the partial ceiling 64 to perform a predetermined mounting work. After that, the work of connecting the partial ceiling portion 62 and the partial ceiling portion 64 is performed to integrate the simple ceiling main body portion 60. As a method of connecting the two partial ceiling portions 62 and 64, a fastening means using bolts and nuts is used. For example, the side walls of the partial ceiling portions 62 and 64, which are panel boards, facing each other on the CC line are fastened with bolts and nuts and integrated to form one simple ceiling main body portion 60. If the total mass of the simple ceiling main body 60 is such that it can be easily lifted by one worker, it is not necessary to divide the simple ceiling main body 60. The same applies to the case of the pushed-in state simple ceiling 54.

An appropriate decorative board is stretched on the lower surface of the panel board of the simple ceiling main body 60 facing the car room 20 in order to enhance the design of the ceiling of the car room 20. The simple ceiling main body 60 is provided with a lighting device 65 on the lower surface side. With the modernization from the conventional ceiling 40 to the simple ceiling 50, for example, the lighting device 44 of the conventional ceiling 40 was a box-type fluorescent lamp system, but the lighting device 65 of the simple ceiling 50 has a plurality of lighting blocks. It will be changed to the LED (Light Lighting Device) system divided into. This is an example for explanation, and a lighting method other than the LED may be used. In the example of FIG. 3, the lighting device 65 is divided into four lighting blocks 66, 67, 68, and 69 at the center of the simple ceiling main body 60.

The four lighting blocks 66, 67, 68, 69 are provided with an opening for illumination light in the panel plate of the simple ceiling main body 60, and are attached via an appropriate electrical insulating material. The wiring 70 from the four lighting blocks 66, 67, 68, 69 of the lighting device 65 is appropriately arranged on the upper surface of the panel plate of the simple ceiling main body 60 and extends along the right side to the right end wall of the panel plate. It is pulled out from the drawer hole (not shown) provided to the outside of the simple ceiling main body 60. In the pushed-in state simple ceiling 54 and the overhanging state simple ceiling 56, which will be described later, the mounting bracket 74 is slidably arranged on the right end side of the simple ceiling main body 60. 71 is provided. The wiring 70 goes out from the drawer hole 71 to the outside of the simple ceiling 50 and is connected to a lighting control device (not shown). The lighting control device is installed on the car. The number of lighting blocks is an example for explanation, and the number of lighting blocks other than 4 may be used.

The four lighting blocks 66, 67, 68, 69 of the lighting device 65 may project downward from the lower surface of the panel plate of the simple ceiling body 60, but the amount of protrusion when projecting is the ceiling of the car 10. Limited to a small value to protect the height H20. That is, the lower surface position of the lighting device 65 protruding toward the lower surface side in the simple ceiling main body 60 is set to be the same as the ceiling height H20 in the car 9 having the conventional ceiling 40 as measured from the floor portion 16. As a result, the ceiling height of the car 10 having the simple ceiling 50 shown in FIG. 2B becomes the same as the ceiling height H20 of the car 9 shown in FIG. 1B.

The separated state simple ceiling 52 includes four mounting brackets 72, 74, 76, and 78. In the pushed-in state simple ceiling 54 and the overhanging state simple ceiling 56, which will be described later, the mounting bracket 72 is slid to the left end side of the simple ceiling main body 60, and the mounting bracket 74 is located on the right end side of the simple ceiling main body 60. Slide and place. Further, the mounting bracket 76 is slid and arranged on the front end side of the simple ceiling main body 60, and the mounting bracket 78 is slid and arranged on the rear end side of the simple ceiling main body 60. By using the four mounting brackets 72, 74, 76, 78, it is possible to hold the simple ceiling body 60 in four directions, front, back, left and right, and the simple ceiling is located between the flange 22 of the car 10 and the conventional ceiling 40. 50 can be firmly fixed.

When the rigidity of the simple ceiling 50 is sufficiently large, a number of mounting brackets less than four may be required. Even in that case, it is preferable to hold the ceiling body portion 60 on one end side and the other end side facing each other. A mounting bracket that can slide on one end side of the simple ceiling body 60 is called a one-sided mounting bracket, and a mounting bracket that can slide on the other end side is called a other mounting bracket. It is preferable to hold the simple ceiling main body 60 with a pair of mounting brackets. Both end sides of the simple ceiling main body 60 include left and right end sides, which are both end sides in the width direction, and front and rear end sides, which are both end sides in the depth direction. Therefore, the two mounting brackets that can slide to the left and right end sides in the width direction of the simple ceiling main body 60 are called left and right mounting brackets that form a pair with the two, and slide to the front and rear end sides in the depth direction of the simple ceiling main body 60. The two possible mounting brackets are called front and rear mounting brackets that form a pair with the two. When a number of mounting brackets less than four is used, it is preferable to use a pair of left and right mounting brackets with two or a pair of front and rear mounting brackets with two.

In FIG. 3, a pair of left and right mounting brackets is composed of a left mounting bracket 72 and a right mounting bracket 74, with one end of the simple ceiling body 60 in the width direction as the left end and the other end as the right end. Similarly, the front and rear mounting brackets that form a pair with two are composed of a front mounting bracket 76 and a rear mounting bracket 78, with one end in the depth direction of the simple ceiling main body 60 as the front end and the other end as the rear end.

Since the pair of left and right mounting brackets 72 and 74 are arranged symmetrically with respect to the CC line in FIG. 3 and have the same shape, the right mounting bracket 74 will be mainly described, and the left mounting bracket 72 will be described on the right. The parts different from the mounting bracket 74 will be mainly described.

The right mounting bracket 74 is a member formed by bending a metal plate having a plate thickness t74, which is thinner than the plate thickness t60 of the simple ceiling main body 60, into a U shape in cross section. As shown in FIG. 3B, the right mounting bracket 74 is provided at one end of the upper plate portion 90, the lower plate portion 92 arranged at a predetermined distance G74 from the upper plate portion 90, and the upper plate portion 90. Includes a vertical plate portion 94 that integrally connects a certain right end and a right end that is one end of the lower plate portion 92. The left end, which is the other side of the right mounting bracket 74, is an opening between the lower surface of the upper plate portion 90 and the upper surface of the lower plate portion 92. The vertical dimension of 60 is set to be larger than H60. As a result, the simple ceiling main body 60 can slide between the lower surface of the upper plate 90 and the upper surface of the lower plate 92 of the right mounting bracket 74. The vertical dimension H74 of the right mounting bracket 74 is (G74 + t74 + t74).

The depth dimension L74 of the right mounting bracket 74 is set to be the same as the depth dimension L60 of the simple ceiling main body 60. The width dimension W74 of the right mounting bracket 74 is set to be larger than the width dimension W22 of the flange portion 22 on the outer peripheral portion of the top of the side wall portion 18 of the car chamber 20. As a result, when the right mounting bracket 74 is slid to the left side with respect to the simple ceiling main body 60, the right mounting bracket 74 holds the right end side of the simple ceiling main body 60 and the right end of the simple ceiling main body 60. It can be extended to the right side of the ceiling. Details of the relationship between the width dimension W74, the holding dimension, and the slide movement amount will be described later in FIG.

The right mounting bracket 74 has four notched grooves 84 having a groove opening at the right end in the width direction. The notch groove 84 acts as a guide groove for guiding the shaft portion 33 of the fastening bolt 32, which is a fastening member of the ceiling portion 30, when the right mounting bracket 74 is moved in the width direction when the simple ceiling 50 is attached. The groove width d84 of the notch groove 84 is set to a dimension that does not interfere with the shaft portion 33 of the fastening bolt 32 when the right mounting bracket 74 moves along the width direction. That is, (groove width d84)> (outer diameter d33 of the shaft portion 33). The groove length W84 of the notch groove 84 is the length of the parallel groove portion extending to the left side in the width direction from the opening at the right end portion in the width direction of the right mounting bracket 74, and {(groove width d84) / 2} beyond that. It is the sum of the radius of the semicircular part of. The center position of the semicircular portion is WF as measured from the right end of the right mounting bracket 74. The WF is set to the same dimensions as W32, which is the arrangement position measured from the right end of the ceiling portion 30 of the fastening bolt 32 described in FIG. 1A. By setting WF = W32, when the simple ceiling 50 is arranged on the ceiling portion 30, the shaft portion 33 of the fastening bolt 32 is arranged at the center position of the semicircular portion of the notch groove 84 of the right mounting bracket 74.

Like the right mounting bracket 74, the left mounting bracket 72 is a member formed by bending a metal plate having a plate thickness t72, which is thinner than the plate thickness t60 of the simple ceiling main body 60, into a U shape in cross section. .. The plate thickness t72 is the same as the plate thickness t74 of the right mounting bracket 74. The opening at the right end of the U-shaped left mounting bracket 72 has the same predetermined spacing G74 as the right mounting bracket 74. The vertical dimensions of the left mounting bracket 72 are the same as those of H74 of the right mounting bracket 74. The depth dimension L72 of the left mounting bracket 72 is the same as the depth dimension L74 of the right mounting bracket 74. Therefore, L60 = L72 = L74. The width dimension W72 of the left mounting bracket 72 is the same as the width dimension W74 of the right mounting bracket 74. The left mounting bracket 72 has four notched grooves 82 having a groove opening at the left end in the width direction. The groove width of the notch groove 82 is the same as the groove width d84 of the notch groove 84 of the right mounting bracket 74. The groove length L82 of the notch groove 82 is the same as the groove length W84 of the notch groove 84 of the right mounting bracket 74. The center position of the semicircular portion of the notch groove 82 is WF as measured from the left end of the left mounting bracket 72. The right mounting bracket 74 has a drawer hole 71 through which the wiring 70 from the lighting device 65 passes, but the left mounting bracket 72 is not provided with a drawer hole through which the wiring 70 passes. This is an example for explanation, and the wiring 70 from the lighting device 65 is arranged toward the left side on the panel plate of the simple ceiling main body 60, and a drawer hole 71 for passing the wiring 70 is provided in the left mounting bracket 72. It may be provided.

Since the pair of front and rear mounting brackets 76 and 78 are arranged symmetrically with respect to the line BB in FIG. 3 and have the same shape, the rear mounting bracket 78 will be mainly described, and the front mounting bracket 76 will be described. I will briefly describe it.

The rear mounting bracket 78 is a member formed by bending a metal plate having a plate thickness t78, which is thinner than the plate thickness t60 of the simple ceiling main body 60, into a U shape in cross section. As shown in FIG. 3C, the rear mounting bracket 78 is provided at one end of the upper plate portion 100, the lower plate portion 102 arranged at a predetermined distance G78 from the upper plate portion 100, and the upper plate portion 100. Includes a vertical plate portion 104 that integrally connects a certain rear end and a rear end that is one end of the lower plate portion 102. The front end, which is the other end of the rear mounting bracket 78, is an opening between the lower surface of the upper plate portion 100 and the upper surface of the lower plate portion 102. The vertical dimension of 60 is set to be larger than H60. As a result, the simple ceiling main body 60 can slide between the lower surface of the upper plate 100 of the rear mounting bracket 78 and the upper surface of the lower plate 102. The vertical dimension H78 of the rear mounting bracket 78 is (G78 + t78 + t78). Since G78 is set to be the same as G74 and the plate thickness t78 is set to be the same as the plate thickness t74, the vertical dimension H78 of the rear mounting bracket 78 is the same as the vertical dimension H74 of the right mounting bracket 74.

The width dimension W78 of the rear mounting bracket 78 is set shorter than the width dimension W60 of the simple ceiling main body 60. The setting of W78 will be described later in relation to the pushed-in state simple ceiling 54. The depth dimension L78 of the rear mounting bracket 78 is set to be larger than the depth dimension L22 of the flange portion 22 on the outer peripheral portion of the top of the side wall portion 18 of the car chamber 20. As a result, when the rear mounting bracket 78 is slid to the front side in the depth direction with respect to the simple ceiling main body 60, the rear mounting bracket 78 holds the rear end side of the simple ceiling main body 60 while holding the simple ceiling main body 60. It can be projected to the rear side of the rear end of 60. Since this function is the same as the function of sliding to the left in the width direction of the right mounting bracket 74, the depth dimension L78 of the rear mounting bracket 78 is set to be the same as the width dimension W74 of the right mounting bracket 74.

The rear mounting bracket 78 has two notched grooves 88 having a groove opening at the rear end in the depth direction. The notch groove 88 acts as a guide groove for guiding the shaft portion 33 of the fastening bolt 32, which is a fastening member of the ceiling portion 30, when the rear mounting bracket 78 is moved in the depth direction when the simple ceiling 50 is mounted. Since this function is the same as the function described in the right mounting bracket 74, the groove width d88 of the notch groove 88 is the same as the groove width d84 of the notch groove 84 of the right mounting bracket 74, and the groove length of the notch groove 88. The length is the same as the groove length W84 of the notch groove 84 of the right mounting bracket 74. The center position of the semicircular portion of the notch groove 88 is LF as measured from the rear end of the rear mounting bracket 78. The LF is set to the same dimensions as the L32, which is the arrangement position of the fastening bolt 32 measured from the rear end of the ceiling portion 30 described in FIG. 1 (a). By setting LF = L32, when the simple ceiling 50 is arranged on the ceiling portion 30, the shaft portion 33 of the fastening bolt 32 is arranged at the center position of the semicircular portion of the notch groove 88 of the rear mounting bracket 78. Since L32 = W32, LF = WF.

The front mounting bracket 76 is a member formed by bending a metal plate having a plate thickness t76, which is thinner than the plate thickness t60 of the simple ceiling main body 60, into a U-shape in cross-sectional shape, and is rear-mounted as a shape. It is the same as the metal fitting 78. That is, the plate thickness t76 is the same as the plate thickness t78 of the rear mounting bracket 78, the width dimension W76 of the front mounting bracket 76 is the same as the width dimension W78 of the rear mounting bracket 78, and the depth dimension L76 of the front mounting bracket 76 is. , The same as the depth dimension L78 of the rear mounting bracket 78. The front mounting bracket 76 has two notched grooves 86 having a groove opening at the front end in the depth direction. The center position of the semicircular portion of the notch groove 86 measured from the front end of the front mounting bracket 76 is the same LF as the rear mounting bracket 78. Further detailed description of the front mounting bracket 76 will be omitted.

FIG. 4 is a diagram showing a push-in state simple ceiling 54. The simple ceiling 50 is composed of a simple ceiling main body 60, two pairs of left and right mounting brackets, and two pairs of front and rear mounting brackets, for a total of four mounting brackets. Regarding the left and right mounting brackets, the pushed-in state simple ceiling 54 slides the left mounting bracket 72 to bring the vertical plate portion 94 into contact with the left end of the simple ceiling main body portion 60, and slides the right mounting bracket 74 to vertically thereof. The plate portion 94 is in contact with the right end of the simple ceiling main body portion 60. Further, regarding the front and rear mounting brackets, the vertical plate portion 104 of the front mounting bracket 76 is brought into contact with the front end of the simple ceiling main body 60, and the vertical plate 104 of the rear mounting bracket 78 is brought into contact with the rear end of the simple ceiling main body 60. It is in a state of being in contact. The pushed-in state simple ceiling 54 is a state in which the plane shape is the smallest among the three states of the simple ceiling 50. 4A is a bottom view, FIG. 4B is a cross-sectional view taken along line BB in FIG. 4A, and FIG. 4C is a cross-sectional view taken along line CC in FIG. 4A. It is a figure.

As shown in FIG. 4B, the width dimension W54 of the pushed-in state simple ceiling 54 is {(width dimension W60 of the simple ceiling main body 60) + (plate thickness t72 of the left mounting bracket 72) + (right mounting bracket 74). Plate thickness t74)}. Further, as shown in FIG. 4C, the depth dimension L54 of the pushed-in state simple ceiling 54 is {(depth dimension L60 of the simple ceiling main body 60) + (plate thickness t76 of the front mounting bracket 76) + (rear mounting). The plate thickness of the metal fitting 78 is t78)}. Since the plate thickness is t72 = t74 = t76 = t78, the width dimension W54 of the pushed-in state simple ceiling 54 is the same as the depth dimension L54. The vertical dimension H64 of the pushed-in state simple ceiling 54 is {(vertical dimension H60 of the simple ceiling main body 60) + (plate thickness t72) + (plate thickness t74)}. The vertical dimension H72 of the left mounting bracket 72, the vertical dimension H74 of the right mounting bracket 74, the vertical dimension H76 of the front mounting bracket 76, and the vertical dimension H78 of the rear mounting bracket 78 are the same as those of H64.

In order for the pushed-in state simple ceiling 54 to be larger by (t72 + t72) in width dimension and (t72 + t72) in depth dimension than the simple ceiling main body 60, the arrangement relationship shown in FIG. 4A is required. is necessary. That is, the width dimension W76 of the front mounting bracket 76 and the width dimension W78 of the rear mounting bracket 78 are set shorter than the width dimension W60 of the simple ceiling main body 60. As described in FIG. 3, W76 = W78. Then, as shown in FIG. 4A, the width dimension W64 of the pushed-in state simple ceiling 54 is [(width dimension W72 of the left mounting bracket 72) + (width dimension W74 of the right mounting bracket 74) + (W76 or W78). )] Slightly larger than. The difference is that when the left mounting bracket 72, the right mounting bracket 74, the front mounting bracket 76, and the rear mounting bracket 78 are slid with respect to the simple ceiling main body 60, they are pushed into the simple ceiling 54 without interfering with each other. It is a margin dimension to do. As an example, the margin dimension is several mm. Therefore, the width dimension W76 of the front mounting bracket 76 and the width dimension W78 of the rear mounting bracket 78 are set to the sizes required as [W64- (W72 + W74)-(margin dimension)].

When the lighting device 65 is provided on the simple ceiling body 60, the lighting device 65 may project downward from the lower surface of the panel plate of the simple ceiling body 60, but when projecting, the four sliding mounting brackets 72 , 74, 76, 78 should not interfere. The state in which the amount of slide movement of the four mounting brackets 72, 74, 76, and 78 with respect to the simple ceiling main body 60 is maximized is the state of the pushed-in simple ceiling 54. Therefore, in the plan view of the pushed-in state simple ceiling 54, all four lighting blocks 66, 67, 68, 69 of the lighting device 65 are arranged in the area surrounded by the four mounting brackets 72, 74, 76, 78. Just do it. In that sense, in the plan view of the pushed-in state simple ceiling 54, the area surrounded by the four mounting brackets 72, 74, 76, 78 is a portion of the simple ceiling main body 60 that projects downward from the lower surface of the panel plate. It is an arrangement area of the lighting device 65 to have.

In this way, by arranging the lighting device 65 in the area surrounded by the four mounting brackets 72, 74, 76, 78 in the pushed-in simple ceiling 54, the lighting device 65 and the four mounting brackets 72, 74, 76 , 78 does not cause an interference problem. Instead of this, the lighting device 65 may be integrally provided with a mounting bracket that is slidable with respect to the simple ceiling main body 60. When the lighting device 65 includes at least one lighting block, all the lighting blocks may be integrally provided with any of the left mounting bracket 72, the right mounting bracket 74, the front mounting bracket 76, or the rear mounting bracket 78. good. Even with this configuration, the problem of interference between the lighting device 65 and the four mounting brackets 72, 74, 76, 78 does not occur.

FIG. 5 is a diagram showing a simple ceiling 56 in an overhanging state. The state of the overhanging state simple ceiling 56 is an intermediate state between the separated state simple ceiling 52 and the pushed state simple ceiling 54. That is, the four mounting brackets 72, 74, 76, and 78 are in a state of projecting outward from the left and right ends and the front and rear ends of the simple ceiling main body 60 while holding the left and right end sides and the front and rear end sides of the simple ceiling main body 60. Is. 5 (a) is a bottom view, FIG. 5 (b) is a cross-sectional view taken along line BB in (a), and FIG. 5 (c) is a cross-sectional view taken along line CC in (a). It is a figure.

In a broad sense, the width dimension and depth dimension of the overhanging simple ceiling 56 can be extended as long as the four mounting brackets 72, 74, 76, 78 are within the limits of being separated from the left and right ends and the front and rear ends of the simple ceiling body 60. It is possible. Here, when it is arranged in the car 10, it is adjusted to the width dimension and the depth dimension of the conventional ceiling 40. That is, with reference to FIG. 2, the width dimension W56 of the overhanging simple ceiling 56 is set to the width dimension W40 = (W20 + W22 + W22) of the conventional ceiling 40. The depth dimension L56 of the overhanging simple ceiling 56 is set to be the same as the depth dimension L40 = (L20 + L22 + L22) of the conventional ceiling 40. Since W20 = L20 and W22 = L22, the width dimension W56 and the depth dimension L56 of the overhanging simple ceiling 56 are the same.

In FIG. 5B, the left mounting bracket 72 is slid to the left with respect to the left end of the simple ceiling main body 60, and the right mounting bracket 74 is slid to the right with respect to the right end. A state in which the width dimension W56 is (W20 + W22 + W22) is shown. FIG. 5B shows a slide movement amount M72 of the left mounting bracket 72 and a slide movement amount M74 of the right mounting bracket 74. The slide movement amounts M72 and M74 are calculated as the movement amounts in the width direction from the states of the left mounting bracket 72 and the right mounting bracket 74 in the pushed-in state simple ceiling 54. The slide movement amounts M72 and M74 are obtained as follows.

Since the width dimension W60 of the simple ceiling main body 60 can move the car chamber 20 in the vertical direction, the difference between the width dimension W20 of the car chamber 20 and the width dimension W60 of the simple ceiling main body 60 is defined as (SP0 + SP0). SP0 is a gap generated between the inner wall surface of the side wall portion 18 of the car chamber 20 and the left and right ends of the simple ceiling main body 60 when the simple ceiling main body 60 is arranged in the car chamber 20 (note that FIG. 2). That is, W20 = (W60 + SP0 + SP0). Therefore, the width dimension W56 of the overhanging simple ceiling 56 is W56 = (W20 + W22 + W22) = [W60 + (W22 + SP0) + (W22 + SP0)]. As shown in FIG. 5B, (W22 + S0) = (M72 + t72) = (M74 + t74). From these, W56 = W20 + W22 + W22) = {W60 + (M72 + t72) + (M74 + t74)}. From this relational expression, the slide movement amount M72 = M74 can be obtained by presetting W20, W22, W60, t72 = t74.

Once M72 = M74 is determined, as shown in FIG. 5B, the width dimension W72 of the left mounting bracket 72 is obtained from W72 = (C72 + M72 + t72), and the width dimension W74 of the right mounting bracket 74 is W74 = (C74 + M74 + t74). ). Here, C72 is a width dimension in which the simple ceiling body portion 60 is held by the left mounting bracket 72 at the left end portion, and C74 is a width dimension in which the simple ceiling body portion 60 is held by the right mounting bracket 74 at the right end portion. Is. C72 and C74 are related to the amount of bending when the simple ceiling main body 60 is held at both ends, and are predetermined by the size and rigidity of the simple ceiling main body 60. Note that C72 = C74 is set for retention symmetry. W72 and W74 can be obtained by setting the size of (C72 = C74) in advance. In this way, the slide movement amount M72 of the left mounting bracket 72, the slide movement amount M74 of the right mounting bracket 74, the width dimension W72 of the left mounting bracket 72, and the width dimension W74 of the right mounting bracket 74 are set.

In FIG. 5C, the front mounting bracket 76 is slid to the front side and the rear mounting bracket 78 is slid to the rear side with respect to the simple ceiling main body 60, and the depth dimension L56 of the overhanging simple ceiling 56 is set to (L20 + L22 + L22). ) Is shown. FIG. 5C shows a slide movement amount M76 of the front mounting bracket 76 and a slide movement amount M78 of the rear mounting bracket 78. Further, the width dimension C76 in which the simple ceiling main body 60 is held by the front mounting bracket 76 at the front end portion and the width dimension C78 in which the simple ceiling main body 60 is held by the rear mounting bracket 78 at the rear end portion are shown. C76 = C78 is set for retention symmetry.

The slide movement amount M76 of the front mounting bracket 76, the slide movement amount M78 of the rear mounting bracket 78, the depth dimension L76 of the front mounting bracket 76 and the depth dimension L78 of the rear mounting bracket 78 are also calculated by the calculation method described in FIG. 5 (b). It can be used to make decisions and settings as well. Since L76 = L78 is the same as W72 = W74 and t76 = t78 is the same as t72 = t74, M76 = M78 is the same as M72 = M74 and C76 = C78 is the same as C72 = C74. become.

About the lighting device 65 provided in the simple ceiling main body 60 In order to project downward from the lower surface of the panel plate of the simple ceiling main body 60, the simple ceiling 54 in the pushed state is surrounded by four mounting brackets 72, 74, 76, 78. It is necessary to arrange the lighting device 65 in the area. When the lighting device 65 does not project downward from the lower surface of the panel plate of the simple ceiling main body 60, there is an interference problem between the lighting device 65 and the four mounting brackets 72, 74, 76, 78 in the pushed-in simple ceiling 54. Does not occur. Even in that case, if the lighting device 65 is hidden behind the four mounting brackets 72, 74, 76, 78 in the overhanging simple ceiling 56, sufficient lighting is not performed. Therefore, even if the lighting device 65 does not project downward from the lower surface of the panel plate of the simple ceiling main body 60, it is within the area surrounded by the four mounting brackets 72, 74, 76, 78 in the overhanging simple ceiling 56. It is necessary to arrange the lighting device 65 in the ceiling.

Next, with respect to the simple ceiling 50 of the first embodiment, a method of mounting the simple ceiling in the elevator car room will be described. The simple ceiling mounting method of the elevator car room is a method of repairing the ceiling of the car room 20 in the modernization of the elevator car room, but it is a method that does not require the ceiling lifting and removal work using a chain or the like. FIG. 6 is a flowchart showing a procedure of a simple ceiling mounting method for an elevator car room. In this method, first, the fastening member that fixes the flange portion 22 on the outer peripheral portion of the top of the car chamber 20 and the conventional ceiling 40 is loosened (S10). When loosening the fastening member, the conventional ceiling 40 is not removed. Next, the conventional ceiling 40 is pushed upward (S20). Since a gap is formed between the flange portion 22 and the conventional ceiling 40 by pushing up, the simple ceiling 50 is placed in the gap (S30), the loosened fastening member is tightened (S40), and the simple ceiling 50 is flanged. It is fixed by sandwiching it between 22 and the conventional ceiling 40.

FIG. 7 is a flowchart showing a more detailed procedure. 8, 9, 11 and 12 are cross-sectional views of the car 10 showing the contents of the procedure of FIG. 7. FIG. 10 is a diagram showing the relationship between the car chamber 20, the pushed-in state simple ceiling 54, and the fastening bolt 32, using a view of FIG. 9 as viewed upward from the X direction.

The target to which the simple ceiling 50 is attached is the car 9 having the conventional ceiling 40 described in FIG. The first procedure in FIG. 7 is the fastening member loosening step of S10 in FIG. Here, the fastening member that fastens the flange portion 22 and the conventional ceiling 40 at the outer peripheral portion of the top of the side wall portion 18 forming the car chamber 20 of the car 9 is loosened (S10), and the conventional ceiling 40 is moved upward. Make it movable. The procedure of this process is performed by a worker on the car of the car 9. As described in FIG. 4, since there are 12 fastening bolts 32 and 12 nuts 34 as fastening members, all of them are loosened. When loosening the fastening bolt 32, the tip of the male screw portion is prevented from coming off from the nut 34. That is, by loosening the tip of the threaded portion of the fastening bolt 32 in a state of being engaged with the nut 34, the flange portion 22 can be moved upward with respect to the flange portion 22 without removing the conventional ceiling 40.

FIG. 8 is a view showing a state in which the fastening bolt 32 is loosened with respect to the nut 34, using the same cross-sectional view as in FIG. 1 (b). The conventional ceiling 40 is in a state of being placed on the flange portion 22 by its own weight. The illustration of the workers on the car is omitted. Hereinafter, the car 9 in which the ceiling 40 can be moved upward is referred to as a car 10.

In the conventional ceiling pushing step of S20 in FIG. 6, first, the pushed-in state simple ceiling 54 is prepared and carried into the car chamber 20 from the car door on the front side of the car 10 (S21). As described in FIG. 5, the width dimension W54 of the pushed-in state simple ceiling 54 is smaller than the width dimension W20 of the car chamber 20, and the depth dimension L54 of the pushed-in state simple ceiling 54 is larger than the depth dimension L20 of the car chamber 20. small. Therefore, the worker carries the pushed-in simple ceiling 54 into the car room 20 from the car door on the front side of the car room 20, and lifts the pushed-in simple ceiling 54 upward (S22). The work of this step is performed in the car room 20. FIG. 9 shows a step in which the worker 8 pushes up the pushed-in state simple ceiling 54 carried into the car room 20 upward in the car room 20. Although there is only one worker 8 in FIG. 9, two or more workers may lift the worker 8. Further, the pushed-in state simple ceiling 54 can be divided into two by using the partial ceiling portions 62 and 64 which are divided into two parts of the simple ceiling main body 60, and the subsequent work can be performed in two parts.

FIG. 10 is a view of the X direction of FIG. 9, that is, the ceiling side which is the upper side from the inside of the car chamber 20. The illustration of the worker 8 is omitted. The planar shape of the pushed-in state simple ceiling 54 is the same as that in FIG. 4 (a). Since the plane shapes of the conventional ceiling 40, the car room 20, the pushed-in simple ceiling 54, and the overhanging simple ceiling 56 are all symmetrical in the left-right front-rear direction, the right side portion in the width direction will be described below.

The gap between the flat shape of the pushed-in state simple ceiling 54 and the inner wall surface of the side wall portion 18 of the car chamber 20 is (SP0-t74), where the plate thickness of the right mounting bracket 74 is t74. The center position of the semicircular portion of the notch groove 84 of the right mounting bracket 74 is the position of the WF measured from the right end of the right mounting bracket 74, and the arrangement position of the fastening bolt 32 on the ceiling portion 30 is from the right end of the conventional ceiling 40. It is measured as W32, and WF = W32 is set. As a result, when the right mounting bracket 74 is slid to the right so that the right end of the right mounting bracket 74 coincides with the right end of the conventional ceiling 40, the shaft portion 33 of the fastening bolt 32 is guided to the notch groove 84. , It is arranged at the center position of the semicircular portion of the notch groove 84. The plane shapes of the conventional ceiling 40, the car room 20, the pushed-in simple ceiling 54, and the overhanging simple ceiling 56 are all symmetrical in the left-right front-rear direction. Therefore, the relationship between the center position of each of the semicircular portions of the notch grooves 82, 86, and 88 and the arrangement position of the fastening bolt 32 is the same as that of the notch groove 84.

Returning to FIG. 7, when the pushed-state simple ceiling 54 is lifted upward and the upper surface of the pushed-state simple ceiling 54 comes into contact with the lower surface of the conventional ceiling 40, the conventional ceiling 40 is pushed upward via the pushed-state simple ceiling 54 (S23). The work of this step is performed in the car room 20 following S22. As described in S10, since the threaded portion of the shaft portion 33 of the fastening bolt 32 is in a state of being engaged with the nut 34 at the tip portion, the conventional ceiling 40 is lifted until the nut 34 comes into contact with the lower surface of the flange portion 22. be able to. By appropriately setting the length of the threaded portion of the fastening bolt 32 and adjusting the loosening amount in S10, the amount of pushing up of the conventional ceiling 40 from the upper surface of the flange portion 22 can be adjusted to the vertical dimension of the pushed-in state simple ceiling 54. It can be made larger than H54.

FIG. 10 is a diagram showing a process in which a worker 8 pushes up a conventional ceiling 40 upward through a simple ceiling 54 in a pushed state. Since the ceiling height H20 of the conventional ceiling 40 is higher than the height of the worker 8, the worker 8 uses an appropriate work table 6. The gap SP1 formed between the upper surface of the flange portion 22 and the lower surface of the conventional ceiling 40 by pushing up the conventional ceiling 40 is larger than the vertical dimension H54 of the push-in state simple ceiling 54.

In the process of arranging the simple ceiling of S30 in FIG. 6, first, the left mounting bracket 72 and the right mounting bracket 74, which are a pair of left and right mounting brackets, and the front mounting bracket, which is a pair of front and rear mounting brackets, are formed. Each of the 76 and the rear mounting bracket 78 is in an overhanging state (S31). Then, while holding the simple ceiling main body 60, the overhanging portion is arranged between the flange portion 22 on the outer peripheral portion of the top of the car chamber 20 and the conventional ceiling 40 (S32). The work of this step is performed in the car room 20 and on the car. The illustration of the workers on the car is omitted. As described in FIG. 10, the gap SP1 formed between the upper surface of the flange portion 22 and the lower surface of the conventional ceiling 40 is larger than the vertical dimension H54 of the push-in state simple ceiling 54. As a result, the pushed-in state simple ceiling 54 can be slid in the left-right front-rear direction so as to enter the gap SP1 and the mounting brackets 72, 74, 76, 78 can be arranged between the flange portion 22 and the conventional ceiling 40.

To give an example of the arrangement of the mounting brackets 72, 74, 76, 78, first, the pushed-in state simple ceiling 54 is inserted into the gap SP1 at the right end of the car chamber 20 and slid to the right, and the pushed-in state simple ceiling 54 The right end is abutted against the shaft portion 33 of the fastening bolt 32. Here, since the right end of the simple ceiling main body 60 abuts on the shaft 33, the worker on the car pulls the right mounting bracket 74 further to the right. When the right mounting bracket 74 is pulled to the right, the right end of the semicircular portion of the notch groove 84 of the right mounting bracket 74 hits the shaft portion 33 and stops. In this state, the right end of the right mounting bracket 74 is aligned with the right end of the conventional ceiling 40. When the pushed-in state simple ceiling 54 is lowered downward from that state, the conventional ceiling 40 is also lowered downward, so that the right mounting bracket 74 is sandwiched between the flange portion 22 and the conventional ceiling 40. Therefore, one or two of the fastening bolts 32 on the right end side of the conventional ceiling 40 are turned in the tightening direction, and the right mounting bracket 74 is sandwiched between the flange portion 22 and the conventional ceiling 40 with the fastening bolt 32. Temporarily fix with nut 34.

When the pushed-in simple ceiling 54 is slid forward in this state, the right mounting bracket 74 cannot move forward due to the fastening bolt 32, and the remaining part of the pushed-in simple ceiling 54 is the right mounting bracket 74. Move forward while being held by. Therefore, on the front end side of the pushed-in state simple ceiling 54, the same procedure as described above is repeated, and the front mounting bracket 76 is temporarily sandwiched between the flange portion 22 and the conventional ceiling 40 with the fastening bolt 32 and the nut 34. Stop. Next, when the pushed-state simple ceiling 54 is slid to the left, the front mounting bracket 76 cannot move to the left due to the fastening bolt 32, and the remaining portion of the pushed-state simple ceiling 54 is the front mounting bracket 76. Moves to the left while being held by. Therefore, on the left end side of the pushed-in state simple ceiling 54, the same procedure as described above is repeated, and the fastening bolt 32 and the nut 34 are sandwiched between the flange portion 22 and the conventional ceiling 40. Temporarily fix with. Then, when the pushed-state simple ceiling 54 is slid backward, the left mounting bracket 72 is held by the left mounting bracket 72 in a state where the left mounting bracket 72 cannot be moved backward by the fastening bolt 32, and the remaining portion of the pushed-state simple ceiling 54 is held by the left mounting bracket 72. While moving backwards. Therefore, on the rear end side of the pushed-in state simple ceiling 54, the same procedure as described above is repeated, and the fastening bolt 32 and the nut are sandwiched between the flange portion 22 and the conventional ceiling 40 with the rear mounting bracket 78. Temporarily fix at 34.

Next, as a step of tightening the fastening member of S40 in FIG. 6, the worker on the car has the left, right, front and rear end positions of the four mounting brackets 72, 74, 76, 78 at the left, right, front and rear ends of the conventional ceiling 40. Check if it matches the position. If they do not match, adjust the position and then tighten all the fastening bolts 32 to the nuts 34 to fix them. As a result, the car 10 has a ceiling portion 30 in which the overhanging simple ceiling 56 is sandwiched and fixed between the flange portion 22 and the conventional ceiling 40.

According to the configuration of the first embodiment, the simple ceiling 50 includes a simple ceiling main body 60 and four mounting brackets 72, 74, 76, and 78. The pushed-state simple ceiling 54 in which the four mounting brackets 72, 74, 76, and 78 are pushed into the left, right, front, and rear ends of the simple ceiling main body 60 has a size that allows the car chamber 20 to move in the vertical direction. If necessary, the simple ceiling main body 60 can be divided into two parts so that the mass can be lifted by the worker 8 by hand, so that the work on the chain becomes unnecessary. The four mounting brackets 72, 74, 76, and 78 project from the left, right, front, and rear ends of the simple ceiling main body 60. This overhanging portion can be sandwiched between the flange portion 22 on the outer peripheral portion of the top of the car chamber 20 and the conventional ceiling 40. By arranging the overhanging simple ceiling 56 on the upper surface of the flange portion 22 on the outer peripheral portion of the top of the car chamber 20 and arranging the conventional ceiling 40 on the upper side thereof, the ceiling height of the simple ceiling 50 in the car chamber 20 can be increased. The height can be set to H20, which is the same as the ceiling height of the conventional ceiling 40. Since the conventional ceiling 40 is not removed, a chain for removal is not required. As described above, the simple ceiling 50 can renew the ceiling of the car room 20 by a relatively simple method without changing the ceiling height of the car room 20.

[Second Embodiment] Next, the second embodiment will be described. First, the configurations of the separated state simple ceiling 53 and the overhanging state simple ceiling 57 in the second embodiment will be described with reference to FIGS. 13 and 14. After that, a simple ceiling mounting method using these will be described. In the second embodiment, the pushed-in simple ceiling is not used.

FIG. 13 is a configuration diagram of the separated state simple ceiling 53 in the second embodiment, and is a diagram corresponding to FIG. 3 in the first embodiment. Also in the second embodiment, the simple ceiling 50 is composed of a simple ceiling main body 60 and four mounting brackets 112, 114, 116, 118. The four mounting brackets 112, 114, 116, 118 are different from FIG. 3, and the simple ceiling main body 60 is exactly the same as the simple ceiling main body 60 of FIG. FIG. 13 corresponds to the plan view of FIG. 3 (a), but the cross-sectional views along the lines BB and CC are exactly the same as those of FIGS. 3 (b) and 3 (c) except for the reference numerals of the elements. Since it is configured, these cross-sectional views are omitted in FIG.

The four mounting brackets 112, 114, 116, 118 differ from the four mounting brackets 72, 74, 76, 78 in FIG. 3 in the notch grooves 122, 124, 126, 128. Other than that, the contents are exactly the same as those described in FIG. 3, except that the symbols of the elements are different. The code of the element of FIG. 13 is the code of FIG. 3 plus "+40". For example, the width dimension W114 of the right mounting bracket 114 is the same as the width dimension W74 of the right mounting bracket 74 of FIG. 3, the depth dimension L114 is the same as the depth dimension L74 of the right mounting bracket 74 of FIG. It is the same as the plate thickness t74 of the right mounting bracket 74 of 3. Similarly, each dimension of the left mounting bracket 112 of FIG. 13 is the same as each dimension corresponding to the left mounting bracket 72 of FIG. Each dimension of the front mounting bracket 116 of FIG. 13 is the same as each dimension corresponding to the front mounting bracket 76 of FIG. 3, and each dimension of the rear mounting bracket 118 of FIG. 13 corresponds to the rear mounting bracket 78 of FIG. It is the same as each dimension.

The notch groove 122 of the left mounting bracket 112 is different from the notch groove 82 of the left mounting bracket 72 in FIG. 3 in the arrangement of the groove opening of the notch groove 122. The groove opening of the notch groove 82 of the left mounting bracket 72 in FIG. 3 is arranged on the side of the vertical plate portion 104, while the notch groove 122 is arranged on the U-shaped opening side of the left mounting bracket 112. NS. The center position of the semicircular portion of the notch groove 122 is WF measured from the right end of the left mounting bracket 112, which is the same as the case of the left mounting bracket 72 in FIG. Similarly, the notch groove 124 of the right mounting bracket 114, the notch groove 126 of the front mounting bracket 116, and the notch groove 128 of the rear mounting bracket 118 are the notch groove 84 of the right mounting bracket 74 and the notch groove of the front mounting bracket 76 in FIG. 86, the arrangement of the groove opening is different from that of the notch groove 88 of the rear mounting bracket 78. Regarding these, the notch groove 124 of the right mounting bracket 114 and the notch groove of the rear mounting bracket 118 in FIG. 13 correspond to the description of the notch groove 84 of the right mounting bracket 74 and the notch groove 88 of the rear mounting bracket 78 in FIG. 128 will be described.

The right mounting bracket 114 has four notched grooves 124 having a groove opening at the left end in the width direction. The groove width d124 of the notch groove 124 is set to a dimension that does not interfere with the shaft portion 33 of the fastening bolt 32 when the right mounting bracket 114 slides along the width direction. That is, (groove width d124)> (outer diameter d33 of the shaft portion 33). The groove length W124 of the notch groove 124 is the length from the semicircular portion having a radius of {(groove width d124) / 2} to the left end of the right mounting bracket 114. The center position of the semicircular portion having a radius of {(groove width d124) / 2} is the position of the WF measured from the right end of the right mounting bracket 114. This center position is the same as the center position of the semicircular portion having a radius of {(groove width d84) / 2} in FIG. Since the notch groove 122 of the left mounting bracket 112 has the same contents, detailed description thereof will be omitted.

The rear mounting bracket 118 has two notched grooves 128 having a groove opening at the front end in the depth direction. The groove width d128 of the notch groove 128 is set to a dimension that does not interfere with the shaft portion 33 of the fastening bolt 32 when the rear mounting bracket 118 slides along the depth direction. That is, (groove width d128)> (outer diameter d33 of the shaft portion 33). The groove length L128 of the notch groove 128 is the length from the semicircular portion having a radius of {(groove width d128) / 2} to the front end in the depth direction of the rear mounting bracket 118. The center position of the semicircular portion having a radius of {(groove width d128) / 2} is the position of LF measured from the rear end of the rear mounting bracket 118. This center position is the same as the center position of the semicircular portion having a radius of {(groove width d88) / 2} in FIG. Since the notch groove 126 of the front mounting bracket 116 has the same contents, detailed description thereof will be omitted.

FIG. 14 is a configuration diagram of the overhanging state simple ceiling 57 in the second embodiment, and is a diagram corresponding to FIG. 5 in the first embodiment. FIG. 14 corresponds to the plan view of FIG. 5 (a), but the cross-sectional views along the lines BB and CC are completely the same as those of FIGS. 5 (b) and 5 (c) except for the reference numerals of the elements. Since the configuration is the same, these cross-sectional views are omitted in FIG.

The difference between the second embodiment and the first embodiment is the notch groove 122 of the left mounting bracket 112, the notch groove 124 of the right mounting bracket 114, the notch groove 126 of the front mounting bracket 116, and the notch of the rear mounting bracket 118. There is only a groove 128. In the overhanging state simple ceiling 57, these notch grooves 122, 124, 126, 128 are centered at the position of WF = LF from the end on the opposite side of the simple ceiling main body 60, starting from the notch. Terminate at the semicircular part with. In the case of the overhanging simple ceiling 56 in FIG. 3, the notch grooves 82, 84, 86, 88 start from the end opposite to the side of the simple ceiling main body 60, and from the end opposite to the notch. It ends at a semicircular portion having a central position at the position of WF = LF. As described above, the arrangement position of the semicircular portion is the same in both FIGS. 13 and 5, but the direction in which the notch groove extends from the semicircular portion is opposite to each other in FIGS. 13 and 5. Further, the groove lengths of the notch grooves 122, 124, 126, 128 in FIG. 13 are longer than the groove lengths of the notch grooves 82, 84, 86, 88 in FIG. Except for the differences regarding the notch grooves 122, 124, 126, 128, the slide movement amount described in FIG. 3 and the length at which the simple ceiling main body 60 is held by the end of the mounting bracket are also overhanging in FIG. The same applies to the state simple ceiling 57.

This completes the description of the configuration of the separated state simple ceiling 53 and the overhanging state simple ceiling 57 in the second embodiment. Next, the simple ceiling mounting method of the elevator car room in the second embodiment will be described focusing on the differences from the simple ceiling mounting method of the elevator car room in the first embodiment. FIG. 15 is a flowchart showing a detailed procedure of the simple ceiling mounting method in the second embodiment.

Since the step of loosening the fastening member (S10) is the same as the contents of S10 and FIG. 8 of FIG. 7, detailed description thereof will be omitted. Regarding the conventional ceiling pushing step of S20 in FIG. 6, the simple ceiling main body 60 is used, whereas the simple ceiling 54 in the pushed state is used in FIG. 7. The width dimension W56 of the pushed-in state simple ceiling 54 is {(width dimension W60 of the simple ceiling main body 60) + (plate thickness t72 of the left mounting bracket 72) + (plate thickness t74 of the right mounting bracket 74)}. Further, the depth dimension L54 of the pushed-in state simple ceiling 54 is {(depth dimension L60 of the simple ceiling main body 60) + (plate thickness t76 of the front mounting bracket 76) + (plate thickness t78 of the rear mounting bracket 78)}. Therefore, when the pushed-in state simple ceiling 54 has a size that allows it to move in the vertical direction in the car chamber 20, the simple ceiling main body 60 is also smaller than this, so that it can move in the vertical direction in the car chamber 20. be.

In FIG. 15, as a conventional ceiling pushing step (S20), first, the simple ceiling main body 60 is carried into the car chamber 20 (S26). In this step, in S21 of FIG. 7, the pushed-in state simple ceiling 54 is simply replaced with the simple ceiling main body 60. Next, the simple ceiling main body 60 is pushed up in the car chamber 20 (S27). In this step, in S22 and FIG. 9 of FIG. 7, the pushed-in state simple ceiling 54 is simply replaced with the simple ceiling main body 60. Then, the conventional ceiling 40 is pushed upward via the simple ceiling main body 60 (S28). In this step, in S23 and FIG. 10 of FIG. 7, the pushed-in state simple ceiling 54 is simply replaced with the simple ceiling main body 60. In S28, as shown in the corresponding FIG. 10, a gap SP1 is formed between the upper surface of the flange portion 22 on the outer peripheral portion of the top of the car chamber 20 and the lower surface of the conventional ceiling 40. The gap SP1 pushes up the conventional ceiling 40 so as to be larger than the vertical dimensions (H112 = H114 = H116 = H118) of the four mounting brackets 112, 114, 116, 118 constituting the simple ceiling 50.

In the process of arranging the simple ceiling of S30 in FIG. 6, first, four mounting brackets are formed in the gap SP1 formed between the upper surface of the flange portion 22 on the outer peripheral portion of the top of the car chamber 20 and the lower surface of the conventional ceiling 40. 112, 114, 116, 118 are arranged (S36). The work of this process is performed by the workers on the car. At the time of arrangement, in order to avoid interference with the simple ceiling main body 60 that is being pushed up, the four mounting brackets 112, 114, 116, 118 are prevented from protruding into the car chamber 20.

FIG. 16 is a view corresponding to FIG. 10, which is a view of the ceiling side, which is the upper side from the inside of the car chamber 20, in the process of S36. The illustration of the worker 8 in the car room 20 and the worker on the car is omitted. In the car chamber 20, the gap between the flat shape of the simple ceiling main body 60 and the inner wall surface of the side wall 18 of the car chamber 20 is SP0. The four mounting brackets 112, 114, 116, and 118 are arranged on the upper surfaces of the left, right, front, and rear sides of the flange portion 22, respectively. The arrangement is such that the car 10 is slid into the gap SP1 from the outside and inserted. The insertion direction is such that the groove openings of the notch grooves 122, 124, 126, 128 face the simple ceiling main body 60. In order to determine the arrangement position, the shaft portion 33 of the loosened fastening bolt 32 is inserted into the notch grooves 122, 124, 126, 128, respectively. The insertion depth is set so that the ends of the mounting brackets 112, 114, 116, 118 on the simple ceiling main body 60 side coincide with the position of the inner wall surface of the car chamber 20.

Taking the right mounting bracket 114 as an example, the notch groove 124 guides the shaft portion 33 of the fastening bolt 32 so that the groove opening of the notch groove 124 in the same direction as the U-shaped opening faces the left side. It is arranged at a position where it is to be inserted, and is inserted into the gap SP1 between the flange portion 22 and the conventional ceiling 40. Stop at the position of the inner wall surface of the car chamber 20 so that the left end of the right mounting bracket 114 does not protrude into the range shown as W20 in FIG. This state is shown in FIG. Since the width dimension W114 of the right mounting bracket 114 is longer than the width dimension W22 of the flange portion 22, the right end portion of the right mounting bracket 114 protrudes to the right side of the conventional ceiling 40. Since the range of W20 is hidden by the conventional ceiling 40 and cannot be visually recognized by the worker on the car, the right mounting bracket 114 is marked appropriately and the length protruding from the conventional ceiling 40 is controlled so that the worker can mount it on the right. The left end of the metal fitting 114 can be prevented from protruding into the car chamber 20. In this way, the four mounting brackets 112, 114, 116, and 118 are arranged on the upper surfaces of the left, right, front, and rear sides of the flange portion 22, respectively.

Returning to FIG. 15 again, the four mounting brackets 112, 114, 116, 118 arranged in the gap SP1 between the flange portion 22 and the conventional ceiling 40 are moved to the car chamber 20 side. Then, the end portion of the simple ceiling main body 60 is inserted into the U-shaped opening to hold the left, right, front, and rear end sides of the simple ceiling main body 60 (S37). In this state, the worker 8 in the car room 20 may stop the operation of pushing up the simple ceiling main body 60. In this case, the four mounting brackets 112, 114, 116, 118 remain between the flange portion 22 and the gap SP1 of the conventional ceiling 40. In other words, the four mounting brackets 112, 114, 116, 118 project from the left, right, front, and rear ends of the simple ceiling body 60, but the lengths of the projecting portions are different.

Therefore, the lengths of the overhanging portions of the four mounting brackets 112, 114, 116, 118 from the simple ceiling main body 60 are set to the lengths shown in FIG. It is arranged between the flange portion 22 on the outer peripheral portion of the top of the ceiling and the conventional ceiling 40 (S38). The arrangement here means that the simple ceiling 57 in the overhanging state described in FIG. 14 is in the state. The worker on the car further moves the four mounting brackets 112, 114, 116, 118 to the car chamber 20 side, and fastens the semicircular portions of the notch grooves 122, 124, 126, 128 to the shaft portion 33 of the fastening bolt 32. Hit against. As shown in FIG. 16, the center position of the semicircular portion of the notch groove 124 of the right mounting bracket 114 is WF from the right end of the right mounting bracket 114. The center position of the fastening bolt 32 corresponding to the notch groove 124 is W32 from the right end of the conventional ceiling 40. Since WF = W32 is set, the right mounting bracket 114 is moved to the car chamber 20 side, and the semicircular portion of the notch groove 124 is abutted against the shaft portion 33 of the fastening bolt 32. Out state The state of the right end of the simple ceiling 57 is reached. The other mounting brackets 114, 116, 118 are also described in FIG. 14 by moving to the car chamber 20 side and abutting the semicircular portions of the notch grooves 124, 126, 128 against the shaft portion 33 of the fastening bolt 32. Overhanging state The simple ceiling 57 is in the state.

Since the step of tightening the fastening member (S40) to be performed next is the same as the contents of S40 and FIG. 12 of FIG. 7, detailed description thereof will be omitted.

In the configuration of the second embodiment, the notch grooves 122, 124, 126, 128 in the four mounting brackets 112, 114, 116, 118 are different from those in the first embodiment, and due to the difference, the mounting method is changed. The conventional ceiling pushing process and the simple ceiling placement process are different. When the simple ceiling 50 is arranged and the fastening member is tightened, the car 10 is the same as in the first embodiment. That is, the simple ceiling 50 is arranged so as to be sandwiched between the flange portion 22 on the outer peripheral portion of the top of the car chamber 20 and the conventional ceiling 40. Therefore, also in the second embodiment, the ceiling height of the simple ceiling 50 in the cab room 20 can be set to H20, which is the same as the ceiling height in the conventional ceiling 40, as in the first embodiment. Further, since the ceiling 40 is not removed conventionally, a chain for removal is not required. As described above, the simple ceiling 50 can renew the ceiling of the car room 20 by a relatively simple method without changing the ceiling height of the car room 20.

6 workbench, 8 workers, 12 car chambers, 14 lower frame, 16 floors, 18 side walls, 20 car chambers, 22 flanges, 30 ceilings, 31 heads, 32 fastening bolts, 33 shafts, 34 Nut, 40 Conventional ceiling, 42,61 Flange part, 44,65 Lighting device, 50 Simple ceiling, 52,53 Separated state simple ceiling, 54 Pushed state simple ceiling, 56,57 Overhanged state simple ceiling, 60 Simple ceiling body , 62,64 Partial ceiling, 66,67,68,69 Lighting block, 70 wiring, 71 drawer hole, 72,102 (left) mounting bracket, 74,104 (right) mounting bracket, 76,116 (front) mounting Bracket, 78,118 (rear) mounting bracket, 82,84,86,88,122,124,126,128 Notch groove, 90,100 upper plate, 92,102 lower plate, 94,104 vertical plate.

Claims (8)

It is a simple ceiling newly placed below the conventional ceiling with the same ceiling height in the elevator car room.
A simple ceiling body with a size that can be moved in the vertical direction of the car room,
A pair of mounting brackets, one that slides on one end side of the simple ceiling body and the other mounting bracket that slides on the other end side of the simple ceiling body.
With
The one-sided mounting bracket projects outward from one end side of the simple ceiling main body while holding one end side of the simple ceiling main body.
The other mounting bracket projects outward from the other end side of the simple ceiling main body while holding the other end side of the simple ceiling main body.
The overhanging portion of the one-side mounting bracket and the overhanging portion of the other mounting bracket are both sandwiched and fixed between the top of the car chamber and the conventional ceiling, and are fixed to the simple ceiling of the elevator car room. Each of the one mounting bracket and the other mounting bracket
Includes an upper plate portion, a lower plate portion arranged at a predetermined distance from the upper plate portion, and a vertical plate portion that integrally connects one end of the upper plate portion and one end of the lower plate portion. The simple ceiling main body portion is slidably arranged between the lower surface of the upper plate portion and the upper surface of the lower plate portion, and the upper surface of the upper plate portion faces the conventional ceiling, and the lower plate portion The simple ceiling of the elevator car room according to claim 1, wherein the lower surface faces the top of the car room. As the pair of mounting brackets
A left mounting bracket that can slide on one end side along the width direction of the simple ceiling body,
A right mounting bracket that can slide on the other end side along the width direction of the simple ceiling body,
Left and right mounting brackets that form a pair with two
A front mounting bracket that can slide on one end side along the depth direction of the simple ceiling body,
A rear mounting bracket that can slide on the other end side along the depth direction of the simple ceiling body,
And a pair of front and rear mounting brackets
The simple ceiling of the elevator car room according to claim 1 or 2. Equipped with a lighting device containing at least one lighting block,
The simple ceiling of the elevator car room according to claim 3, wherein all the lighting blocks are integrally provided with any of the left mounting bracket, the right mounting bracket, the front mounting bracket, and the rear mounting bracket. The simple ceiling of the elevator car room according to claim 1, wherein the simple ceiling main body is divided into two partial ceilings. This is a method of installing a new simple ceiling on the lower side of the conventional ceiling with the same ceiling height in the elevator car room.
The simple ceiling is a pair of a simple ceiling main body, one mounting bracket that can slide on one end side of the simple ceiling main body, and the other mounting bracket that can slide on the other end side of the simple ceiling main body. Consists of mounting brackets
A process of loosening the fastening member that fastens the top of the car room and the conventional ceiling so that the conventional ceiling can be moved upward from the top of the car room.
The conventional ceiling pushing process of pushing the conventional ceiling upward from the top of the car chamber, and the conventional ceiling pushing process.
A simple ceiling arrangement process for arranging the simple ceiling between the conventional ceiling pushed up and the top of the car room,
A method for attaching a simple ceiling in an elevator car room, which comprises a fixing step of tightening the fastening member to fix the simple ceiling while sandwiching the simple ceiling between the top of the car room and the conventional ceiling. The simple ceiling in a state where the one mounting bracket constituting the simple ceiling is in contact with one end of the simple ceiling main body and the other mounting bracket is in contact with the other end of the simple ceiling main body is pushed in. As a simple ceiling, the pushed-in simple ceiling has a size that allows it to move up and down in the car room.
The conventional ceiling pushing process is
It is a step of carrying the simple ceiling in the pushed state into the car room, pushing it upward in the car room, and pushing the conventional ceiling upward through the simple ceiling in the pushed state.
The simple ceiling arrangement process is
The one mounting bracket is projected outward from one end side of the simple ceiling body while holding one end side of the simple ceiling body, and the other mounting bracket is projected outward from the other end side of the simple ceiling body. The overhanging portion of the one mounting bracket and the overhanging portion of the other mounting bracket are projected outward from the other end side of the simple ceiling main body while holding the above, respectively. It is a process of arranging between the ceiling and the ceiling.
The fixing step is
The elevator according to claim 6, which is a step of tightening the fastening member to fix the simple ceiling while sandwiching the overhanging portion of the pair of mounting brackets between the top of the car chamber and the conventional ceiling. How to install a simple ceiling in the car room. The simple ceiling body has a size that allows it to move up and down in the car room.
The conventional ceiling pushing process is
It is a step of pushing up the simple ceiling main body portion upward in the car room and pushing up the conventional ceiling upward through the simple ceiling main body portion.
The simple ceiling arrangement process is
Separated from the simple ceiling main body under predetermined arrangement conditions so as not to protrude into the cab in the gap formed between the top of the cab and the conventional ceiling by the conventional ceiling pushing step. Place the pair of mounting brackets in the state,
With the simple ceiling body lifted, one of the pair of mounting brackets is moved to the car chamber side to hold one end side of the simple ceiling body while holding one end side of the simple ceiling body. It is in a state of protruding outward from the end side, and the other mounting bracket is moved to the car chamber side to hold the other end side of the simple ceiling main body portion and protrude outward from the other end side of the simple ceiling main body portion. This is a step of arranging the overhanging portion of the mounting bracket on one side and the overhanging portion of the mounting bracket on the other side between the top of the car chamber and the conventional ceiling, respectively.
The fixing process is
The elevator car according to claim 6, which is a step of tightening the fastening member to fix the simple ceiling while sandwiching the overhanging portion of the pair of mounting brackets between the top of the car chamber and the conventional ceiling. How to install a simple ceiling in a room.

Images