elevator

Abstract

To provide an elevator capable of relaxing restrictions on materials applicable to camera mounting components when a monitoring camera is installed on the ceiling of a car with a clipped ceiling, the restrictions being caused by fixing the camera mounting components to each other by welding as in the prior art.SOLUTION: An elevator has a top board to form a corner space for lowering a ceiling surface of a cage and comprises a car with a camera installed in the corner space. The elevator has a bracket component to support the camera in the corner space and a shaft component to fix the bracket component from the attic of the car. The bracket component and the shaft component are fixed to the top board by co-tightening.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to an elevator.

Background Art

[0002] In some cases, a surveillance camera may be attached to an elevator car for purposes such as crime prevention (see, for example, Patent Document 1). The surveillance camera is attached to the ceiling of the car to photograph the entire interior of the car. When the surveillance camera is attached to the ceiling of the car, if the surveillance camera is placed in a location that is easily visible to passengers in the car (a prominent location), the design of the car will be impaired.

[0003] Therefore, in order not to impair the design of the car, it is required to install the surveillance camera in a position that is difficult for passengers in the car to see (a non-prominent position). As one technology to meet this requirement, an elevator car that employs a so-called dropped ceiling in which the ceiling surface of the car is recessed is known. In an elevator car that employs a dropped ceiling, a space that is recessed upward from the ceiling surface (hereinafter also referred to as a "corner space") can be secured around the ceiling surface of the car. Therefore, by installing the surveillance camera in the corner space, it becomes difficult for passengers to see the surveillance camera. Thus, the design of the car can be enhanced.

[0004] Note that the dropped ceiling is not only used to make the surveillance camera difficult for passengers to see, but may also be employed for various reasons, for example, to make the air vents and ventilation openings provided in the ceiling of the car difficult for passengers to see.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] When installing a surveillance camera in a corner space, it is necessary to position the camera so that its lower part protrudes below the ceiling surface of the elevator car to ensure that the range of surveillance is not reduced. On the other hand, since the wiring for video data output and power supply connected to the surveillance camera is routed into the space above the elevator car ceiling (the upper side of the ceiling panel), the surveillance camera needs to be fixed from above the ceiling. Therefore, when installing a surveillance camera in a corner space, two components are required as camera mounting parts: a first component to support the surveillance camera in the corner space and a second component to fix the first component from above the ceiling, in order to compensate for the step created by the dropped ceiling. Currently, the first and second components are fixed by welding. However, when fixing camera mounting components together by welding, there are limitations on the materials that can be used for those components.

[0007] The objective of the present invention is to provide an elevator that can alleviate the constraints on the materials that can be used for camera mounting parts when a surveillance camera is installed on the ceiling of an elevator car that employs a dropped ceiling. [Means for solving the problem]

[0008] To solve the above problems, for example, the configuration described in the claims can be adopted. The present invention includes several means for solving the above problems, but one example is an elevator having a top plate that forms a corner space for lowering the ceiling surface of the elevator car, and an elevator car in which a camera is installed in the corner space, wherein the elevator has a bracket part for supporting the camera in the corner space and a shaft part for fixing the bracket part from the ceiling space of the elevator car, and the bracket part and the shaft part are fixed to the top plate by fastening them together. [Effects of the Invention]

[0009] According to the present invention, when installing a surveillance camera on the ceiling of a train car that employs a dropped ceiling, the constraints on the materials that can be used for camera mounting parts can be relaxed. Other issues, configurations, and effects not mentioned above will be clarified by the following description of the embodiments. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram showing an example of the configuration of an elevator according to the first embodiment. [Figure 2] This is a schematic perspective view showing the configuration of the elevator car according to the first embodiment. [Figure 3] This is a perspective view showing the structure of the tabletop. [Figure 4] This is a side cross-sectional view showing the arrangement of the tabletops. [Figure 5] This is a side cross-sectional view showing the elevator car of the first embodiment with a camera attached. [Figure 6] This is a cross-sectional view from VI-VI in Figure 5. [Figure 7] This is a three-view drawing showing the configuration of the bracket component. [Figure 8] This is a side view showing the configuration of the shaft components. [Figure 9] This is a side view showing the bracket component's notch fitted into the shaft component's groove. [Figure 10] This is a plan view showing the shape of the second fixing piece of the bracket component in the second embodiment. [Modes for carrying out the invention]

[0011] Embodiments of the present invention will now be described in detail with reference to the drawings. In this specification and the drawings, elements having substantially the same function or configuration are denoted by the same reference numerals, and redundant descriptions are omitted.

[0012] <First Embodiment> Figure 1 is a schematic diagram showing an example of the configuration of an elevator according to the first embodiment. As shown in Fig. 1, the elevator is installed in the hoistway of a building such as a building, and includes a hoisting machine 1, a main rope 2, a car 3, a pair of under-car pulleys 4A and 4B, a counterweight 5, and a pulley 6.

[0013] The hoisting machine 1 is a device that winds up the main rope 2 to raise and lower the car 3. The hoisting machine 1 is installed at the upper part of the hoistway. One end and the other end of the main rope 2 are fixed to the uppermost part of the hoistway, respectively. The main rope 2 is wound around a pair of under-car pulleys 4A and 4B, the hoisting machine 1, and the pulley 6. The car 3 is guided by a guide rail (not shown) to move up and down in the hoistway. The pair of under-car pulleys 4A and 4B are arranged below the car 3. The counterweight 5 is a weight for balancing the mass with the car 3. When the hoisting machine 1 winds up the main rope 2, the counterweight 5 moves up and down in the opposite direction to the car 3. The pulley 6 moves up and down integrally with the counterweight 5. Note that the configuration of the elevator is not limited to the configuration shown in Fig. 1, and various configurations can be adopted. <m

[0014] Fig. 2 is a schematic perspective view showing the configuration of the car according to the first embodiment. In the present embodiment, in order to clarify the positional relationship of each part of the car 3, when viewed from the landing side of the elevator, the left-right direction of the car 3 is the X direction, the depth direction of the car 3 is the Y direction, and the height direction of the car 3 is the Z direction. In the hoistway where the car 3 is arranged, the X direction and the Y direction are parallel to the horizontal direction, and the Z direction is parallel to the vertical direction.

[0015] The car 3 has a car cabin which is a space for accommodating passengers and luggage. The car 3 includes four side plates 11, a car door 12, a car floor 13, a car ceiling 14, and a car frame 15. The car cabin is a space surrounded by the four side plates 11, the car door 12, the car floor 13, and the car ceiling 14 described above.

[0016] The four side plates 11 are arranged to surround the sides of the car body compartment. The car door 12 is arranged at the front of the elevator car 3. The car door 12 is a door that opens and closes an entrance / exit leading to the car body compartment of the elevator car 3. A sill 16 is attached to the front of the elevator car 3. A guide groove 16a is formed in the sill 16. The car door 12 is guided by the guide groove 16a of the sill 16 and opens and closes in the X direction.

[0017] The car floor 13 is arranged at the lower part of the elevator car 3. Although not shown in the figure, the car floor 13 includes a floor board for carrying passengers and luggage and a support mechanism for supporting the floor board. The car ceiling 14 includes a top board 17 and a reinforcing frame 18. The top board 17 and the reinforcing frame 18 are fixed using, for example, bolts, nuts, and rivets not shown in the figure. The top board 17 is a member arranged at the ceiling of the car body compartment. The reinforcing frame 18 is a member for reinforcing the car ceiling 14 of the elevator car 3. A safety fence 19 is attached to the reinforcing frame 18. The safety fence 19 is a member for ensuring safety when an operator rides on the car ceiling 14 to perform work.

[0018] The car frame 15 is composed of two vertical frames 15a, 15b, an upper frame 15c, and a lower frame (not shown). The car frame 15 is arranged in a vertically long rectangular shape when viewed from the A direction of the elevator car 3. The two vertical frames 15a, 15b are arranged in pairs on the left and right of the elevator car 3. The upper frame 15c is arranged at the upper part of the elevator car 3 in a state of connecting the upper ends of the two vertical frames 15a, 15b. The lower frame is arranged at the lower part of the elevator car 3 in a state of connecting the lower ends of the two vertical frames 15a, 15b.

[0019] Figure 3 is a perspective view showing the structure of the top board, and Figure 4 is a side sectional view showing the arrangement of the top board. As shown in Figure 3, the top board 17 is formed in a quadrangle (such as a rectangle or a square) in plan view. The top board 17 is an integrally formed product having four attachment parts 21, four connection parts 22, and one ceiling part 23.

[0020] The top plate 17 is bent in a crank shape from the ceiling portion 23 through the connecting portion 22 to the mounting portion 21. Specifically, the ceiling portion 23 is positioned horizontally, the connecting portion 22 is bent upward at a right angle at the outer edge of the ceiling portion 23, and the mounting portion 21 is bent sideways at a right angle at the upper end of the connecting portion 22. The connecting portion 22 rises vertically from the outer edge of the ceiling portion 23, and the mounting portion 21 extends horizontally from the upper end of the connecting portion 22. The ceiling portion 23 is positioned lower than the mounting portion 21 with a step D (see Figure 4) between them.

[0021] The four mounting sections 21 are attached to the upper end 11a (see Figure 4) of the corresponding side plate 11. The mounting section 21 is provided with multiple holes h1 to h14 and one opening 25. The holes h1 to h14 include holes for fixing the top plate 17 and the reinforcing frame 18 with rivets, and holes for fixing the top plate 17, the reinforcing frame 18 and the side plate 11 with bolts and nuts. The opening 25 is formed as an opening, i.e., an air outlet, for supplying air into the cage chamber by driving a fan (not shown).

[0022] The four connecting parts 22 are the parts that connect the corresponding mounting part 21 to the ceiling part 23. The four connecting parts 22 are formed by bending vertically from the horizontal ceiling part 23.

[0023] The ceiling section 23 is formed in the shape of a flat rectangular plate in plan view. Lighting (not shown) is attached to the ceiling section 23. As shown in Figure 4, the lower surface of the ceiling section 23 forms the ceiling surface F of the elevator car 36. The ceiling of the elevator car 35 is a so-called dropped ceiling, with the ceiling surface F lowered by the step D described above. In addition, a corner space 34 is formed at the corner of the ceiling of the elevator car 35 to lower the ceiling surface F. The corner space 34 is formed in a recessed state above the ceiling surface F. The corner space 34 is formed by the top plate 17 and the side plate 11. Specifically, the corner space 34 is formed by the inner surfaces of the connection part 22 and the mounting part 21 of the top plate 17 and the inner surface of the side plate 11. Note that in Figures 3 and 4, the notation for the holes formed in the ceiling portion 23 for installing lighting and the notation for the holes formed in the mounting portion 21 for installing a camera have been omitted.

[0024] Figure 5 is a side cross-sectional view showing the elevator car with a camera attached according to the first embodiment, and Figure 6 is a cross-sectional view taken along line VI-VI in Figure 5. Note that in Figure 6, the bolts and washers are not shown. In this embodiment, a surveillance camera, which is installed for security purposes, is given as an example of a camera, but any camera capable of photographing the inside of the elevator car is acceptable, and the purpose of installation is not limited. Also, in this embodiment, a dome-shaped surveillance camera is given as an example, but the type of camera is not limited.

[0025] As shown in Figures 5 and 6, the surveillance camera 50 is installed in a corner space 34 formed to lower the ceiling surface F of the elevator car 36. The surveillance camera 50 has a camera body 51 and a screw shaft 52 protruding from the camera body 51. The camera body 51 incorporates an image sensor, circuit board, lens, etc. (not shown). A lens protection cover 53 is positioned at the lower end of the camera body 51. The lens protection cover 53 is a cover that protects the lens incorporated in the camera body 51. The screw shaft 52 is an axial member for fixing the camera body 51 using a nut 55. The screw shaft 52 is positioned on the central axis of the camera body 51. The screw shaft 52 also protrudes in the direction of the central axis of the camera body 51. The screw shaft 52 has a hollow structure (cylindrical structure) so that the aforementioned wiring can be pulled out to the outside of the surveillance camera 50. A washer 56 is attached to the screw shaft 52 together with the nut 55.

[0026] The surveillance camera 50 is attached to the mounting portion 21 of the top plate 17 using a bracket component 61 and a shaft component 62. The bracket component 61 and shaft component 62 are camera mounting components used when the surveillance camera 50 is installed in the corner space 34. The bracket component 61 is a component that supports the surveillance camera 50 in the corner space 34, and the shaft component 62 is a component for fixing the bracket component 61 from the ceiling of the elevator car. From the viewpoint of ensuring the mounting strength of the surveillance camera 50, the bracket component 61 and shaft component 62 are preferably made of metal, but they may also be made of resin, or one component may be made of metal and the other of resin. As shown in Figure 6, the diagonal dimension Lc of the bracket component 61 is larger than the width dimension Lw of the corner space 34. As a result, the rotation of the bracket component 61 is suppressed by the connection portion 22 of the top plate 17 and the side plate 11 facing it.

[0027] Figure 7 is a three-view drawing showing the configuration of the bracket component. Figure 7A is a view of the bracket component from above, Figure 7B is a view of the bracket component from the side, and Figure 7C is a view of the bracket component from below. As shown in Figure 7, the bracket component 61 is a U-shaped (approximately horizontal U-shaped) component integrally comprising a first fixing piece 611, a second fixing piece 612, and a connecting piece 613. The first fixing piece 611 is the part for fixing the surveillance camera 50 to the bracket component 61. The first fixing piece 611 has an elongated hole 611a formed therein for fixing the surveillance camera 50. The second fixing piece 612 is the part for fixing the surveillance camera 50 to the mounting portion 21 of the top plate 17 via the bracket component 61. The second fixing piece 612 has a notch 612a formed therein. The notch 612a is formed in a U shape. When the bracket component 61 is viewed from above or below, the area where the notch 612a is formed and the area where the elongated hole 611a is formed partially overlap. The connecting piece 613 is the part that connects the first fixing piece 611 and the second fixing piece 612.

[0028] Figure 8 is a side view showing the configuration of the shaft component. As shown in Figure 8, the shaft component 62 has a threaded portion 62a and a grooved portion 62b. A male thread is formed on the threaded portion 62a. The grooved portion 62b is a groove formed continuously around the entire circumference of the shaft component 62, i.e., a circumferential groove. However, the grooved portion 62b is not limited to a circumferential groove, but may also be grooves formed in two locations on a part of the entire circumference of the shaft component 62, with a phase difference of 180 degrees. The grooved portion 62b is formed near the lower end of the threaded portion 62a in the central axis direction of the shaft component 62. Furthermore, the grooved portion 62b is formed with a width dimension W1 that is smaller than the outer diameter dimension of the threaded portion 62a. If the grooved portion 62b is a circumferential groove, the width dimension W1 corresponds to the diameter of the grooved portion 62b. The shaft component 62 has a hollow structure (cylindrical structure) so that the aforementioned wiring can be pulled out into the ceiling space of the elevator car.

[0029] The height dimension H of the groove 62b of the shaft component 62 is set to be slightly larger than the thickness dimension T of the second fixing piece 612 (see Figure 7B). Also, the width dimension W1 of the groove 62b is set to be slightly smaller than the width dimension W2 of the notch 612a of the second fixing piece 612 (see Figure 7A). As a result, the notch 612a of the second fixing piece 612 is configured to be able to be fitted into the groove 62b from a direction perpendicular to the central axis direction of the shaft component 62. Figure 9 is a side view showing the state in which the notch of the bracket component is fitted into the groove of the shaft component.

[0030] Next, we will explain the procedure for a worker to install a surveillance camera on the ceiling of an elevator car using bracket and shaft components. First, the worker secures the surveillance camera 50 to the first fixing piece 611 of the bracket part 61 using a nut 55 and a washer 56. Specifically, the worker inserts the screw shaft 52 of the surveillance camera 50 into the elongated hole 611a of the first fixing piece 611, then attaches the washer 56 to the screw shaft 52, and then engages the nut 55 with the screw shaft 52 and tightens the nut 55. At this time, by making the hole into which the screw shaft 52 is inserted an elongated hole 611a, the position of the surveillance camera 50 can be adjusted in the direction of the long axis of the elongated hole 611a. However, if the position adjustment of the surveillance camera 50 is not necessary, a circular hole may be used instead of the elongated hole 611a.

[0031] Next, the worker fits the notch 612a of the bracket part 61 into the groove 62b of the shaft part 62. Then, while maintaining the fitted state of the notch 612a and the groove 62b, the worker places the bracket part 61 in the corner space 34 and inserts the shaft part 62 into the hole (not shown) in the top plate 17 that opens into the corner space 34. The hole in the top plate 17 is provided in advance in the mounting part 21 of the top plate 17 corresponding to the mounting position of the surveillance camera 50. When the shaft part 62 is inserted into the hole in the top plate 17, the threaded portion 62a of the shaft part 62 protrudes into the space above the ceiling.

[0032] Next, as shown in Figure 5, the worker attaches the washer 59 to the shaft component 62, then engages the nut 58 with the threaded portion 62a of the shaft component 62 and tightens the nut 58. As a result, the bracket component 61 and the shaft component 62 are fixed together to the mounting portion 21 of the top plate 17 by the tightening force of the nut 58. Following the above procedure, the surveillance camera 50 is installed on the ceiling of the elevator car 36.

[0033] As explained above, in the first embodiment, the bracket component 61 and the shaft component 62, which are camera mounting parts, are fixed to the top plate 17 by fastening them together. This makes it possible to relax the constraints on the materials that can be used for the camera mounting parts compared to when the camera mounting parts are fixed to each other by welding.

[0034] Furthermore, in the first embodiment, a groove 62b is formed in the shaft component 62, and a notch 612a that can be fitted into this groove 62b is formed in the bracket component 61. This makes it possible to connect the bracket component 61 and the shaft component 62 without welding.

[0035] Furthermore, in the first embodiment, the threaded portion 62a formed on the shaft component 62 is made to protrude into the ceiling space, and the nut 58 is engaged with the threaded portion 62a. This allows the surveillance camera 50 to be fixed from the ceiling space.

[0036] Furthermore, in the first embodiment, the relationship between the diagonal dimension Lc of the bracket component 61 and the width dimension Lw of the corner space 34 is set to Lc > Lw. This makes it possible to suppress the rotation of the bracket component 61 placed in the corner space 34.

[0037] Furthermore, in the first embodiment, the bracket component 61 integrally includes a first fixing piece 611 to which the surveillance camera 50 is fixed, a second fixing piece 612 having a notch 612a, and a connecting piece 613 that connects the first fixing piece 611 and the second fixing piece 612. This simplifies the structure of the bracket component 61 and reduces component costs.

[0038] Furthermore, in the first embodiment, the hole in the first fixing piece 611 into which the screw shaft 52 protruding from the camera body 51 is inserted is an elongated hole 611a. This allows the position of the surveillance camera 50 to be adjusted when mounting the surveillance camera 50 in the corner space 34.

[0039] <Second Embodiment> The elevator according to the second embodiment differs from the elevator according to the first embodiment described above in the shape of the notch 612a of the second fixing piece 612. The structure of the second fixing piece 612 will be described below with reference to Figure 10.

[0040] As shown in Figure 10, the second fixing piece 612 has a notch 612a formed therein, which is the same as in the first embodiment. However, in the second embodiment, the shape of the entrance portion of the notch 612a is different from that of the first embodiment.

[0041] The entrance portion of the notch 612a is the part that first receives the shaft component 62 when the notch 612a of the bracket component 61 is fitted into the groove 62b of the shaft component 62. In the second embodiment, a pair of protrusions 612b are formed at the entrance portion of the notch 612a. The pair of protrusions 612b are arranged facing each other such that the width dimension W3 of the entrance portion of the notch 612a is smaller than the width dimension W2 of the inner side of the notch 612a. Here, the width dimension W2 shown in Figure 10 is the same as the width dimension W2 shown in Figure 7.

[0042] The width dimension W3 of the entrance portion of the notch 612a is set to be smaller than the width dimension W1 (see Figure 8) of the groove 62b of the shaft component 62. The difference between width dimension W3 and width dimension W1 is set to such an extent that when fitting the notch 612a of the second fixing piece 612 into the groove 62b of the shaft component 62, the shaft component 62 can be pushed into the back of the notch 612a by the force of the worker's hand.

[0043] In this way, by setting the width dimension W3 of the entrance portion of the notch 612a to be smaller than the width dimension W1 of the groove portion 62b, once the shaft component 62 is pushed all the way into the notch 612a, the shaft component 62 will catch on the pair of protrusions 612b. Therefore, after fitting the notch 612a into the groove portion 62b, it is possible to prevent the notch 612a from falling out of the groove portion 62b. Consequently, even if the worker performing the above-described installation work of the surveillance camera 50 has finished the work of fixing the surveillance camera 50 to the bracket component 61 and fitting the notch 612a of the bracket component 61 into the groove portion 62b of the shaft component 62, and then grasps the shaft component 62 and tilts the bracket component 61, the shaft component 62 will catch on the pair of protrusions 612b at the entrance portion of the notch 612a, thereby preventing the surveillance camera 50 from falling.

[0044] It should be noted that the present invention is not limited to the embodiments described above, and includes various modifications. For example, although the embodiments described above are explained in detail to facilitate understanding of the present invention, the present invention is not necessarily limited to having all the configurations described in the embodiments described above. Furthermore, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, it is possible to delete, add, or replace a part of the configuration of each embodiment. [Explanation of Symbols]

[0045] 3...car, 17...top plate, 34...corner space, 36...car compartment, 50...surveillance camera (camera), 51...camera body, 52...screw shaft, 58...nut, 61...bracket part, 62...shaft part, 62a...threaded part, 62b...groove, 611...first fixing piece, 611a...elongated hole, 612...second fixing piece, 612a...notch, 613...connecting piece, F...ceiling surface

Claims

1. An elevator having a car with a top plate that forms a corner space for lowering the ceiling surface of the car, and a camera installed in the corner space, A bracket component that supports the camera in the aforementioned corner space, The bracket component has a shaft component for fixing it from the ceiling of the elevator car, The aforementioned shaft component has a groove, The bracket component has a notch that can be fitted into the groove from a direction perpendicular to the central axis direction of the shaft component, The bracket component and the shaft component are fixed to the top plate by fastening together, with the notched portion fitted into the groove. Elevator.

2. The aforementioned shaft component has a fixing screw portion that is positioned to protrude into the ceiling space, The bracket component and the shaft component are fixed to the top plate by fastening them together with the nut that engages with the threaded portion. The elevator according to claim 1.

3. The diagonal dimension of the bracket component is greater than the width dimension of the corner space. The elevator according to claim 1.

4. The width of the entrance portion of the notch is set to be smaller than the width of the groove so that the notch does not detach from the groove when it is fitted into the groove. The elevator according to claim 1.

5. The bracket component integrally comprises a first fixing piece to which the camera is fixed, a second fixing piece having the notched portion, and a connecting piece connecting the first fixing piece and the second fixing piece. The elevator according to claim 1.

6. The camera comprises a camera body and a screw shaft protruding from the camera body. The first fixing piece has an elongated hole into which the screw shaft is inserted, and into which the position of the camera can be adjusted. The elevator according to claim 5.

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