Mounting plate and mounting method for phase-advancing capacitor

Abstract

Provided are a mounting plate and a mounting method for mounting phase-advancing capacitors to be newly installed, with which it is possible to reduce a burden on a worker performing the mounting work. A plurality of phase-advancing capacitors (1) are mounted to a mounting base (4) using a mounting plate (9). The mounting base (4) is disposed on the top surface of a control panel (2). The mounting base (4) is provided with a plurality of Class A holes which are screw holes. At least two mounting holes are provided in the mounting plate (9) for each of the phase-advancing capacitors (1). The mounting holes are used to mount the phase-advancing capacitors (1) to the mounting plate (9) disposed on the mounting base (4). At least one of the mounting holes is a Class B hole. The Class B hole is a screw hole for fastening a screw for mounting a corresponding phase-advancing capacitor (1). At least two of the mounting holes are Class C holes. The Class C holes are through holes through which through screws (Sc) for mounting corresponding phase-advancing capacitors (1) can pass so as to be fastened to the corresponding Class A holes.

Description

Mounting plate and mounting method for phase-advancing capacitor

[0001] The present disclosure relates to a mounting plate and a mounting method for a phase-advancing capacitor.

[0002] Patent Document 1 discloses an example of a control box, which includes a low-voltage capacitor.

[0003] Japanese Utility Model Application Publication No. 59-92502

[0004] In the control box of Patent Document 1, the low-voltage capacitor is attached to the front panel of the mounting plate with screws. In elevator control panels, capacitors such as a phase-advance capacitor are sometimes attached to a mounting base located on the top surface of the control panel. The phase-advance capacitor is attached by fastening a screw to a screw hole pre-drilled in the mounting base. When replacing an existing phase-advance capacitor with a new one, the dimensions of the existing phase-advance capacitor and the new phase-advance capacitor may differ. In this case, processing may be required, such as drilling a screw hole for the new phase-advance capacitor, in the mounting base located on the top surface of the control panel so that the new phase-advance capacitor can be installed. When the top surface of the control panel is located at a high position, processing the mounting base may be a burden on workers.

[0005] The present disclosure relates to solving such problems, and provides a mounting plate and a mounting method that can reduce the burden on workers performing the installation work when installing a new phase-advancing capacitor.

[0006] The mounting plate according to the present disclosure is a mounting plate for mounting a plurality of first phase leading capacitors to a mounting base disposed on the upper surface of an elevator control panel and provided with a plurality of Class A holes, each of which is a screw hole, and at least two first mounting holes used for mounting the plurality of first phase leading capacitors to the upper side of the mounting plate disposed on the upper surface of the mounting base are provided for each of the plurality of first phase leading capacitors, at least one of the first mounting holes is a first Class B hole which is a screw hole for fastening a first screw for mounting a corresponding one of the plurality of first phase leading capacitors, and at least two of the first mounting holes are first Class C holes which are through holes through which through screws for mounting a corresponding one of the plurality of first phase leading capacitors can be passed so as to be fastened to corresponding Class A holes among the plurality of Class A holes.

[0007] An installation method according to the present disclosure is a method for installing the plurality of first phase-advancing capacitors on the mounting base using the above-mentioned mounting plate, and includes the steps of: placing the mounting plate on an upper surface of the mounting base; installing any of the plurality of first phase-advancing capacitors on the upper side of the mounting plate placed on the upper surface of the mounting base by passing a through screw through the first Class C hole corresponding to that first phase-advancing capacitor and fastening it to a corresponding Class A hole among the plurality of Class A holes; and installing any of the plurality of first phase-advancing capacitors on the upper side of the mounting plate placed on the upper surface of the mounting base by fastening the first screw into the first Class B hole corresponding to that first phase-advancing capacitor. An installation method according to the present disclosure is a method for installing the plurality of first phase-advancing capacitors on the above-mentioned mounting base using the above-mentioned mounting plate, which is provided with Type C holes that are through-holes that allow fixing screws for fixing the mounting plate, placed on an upper surface of the mounting base, to be fastened into corresponding Type A holes of the plurality of Type A holes, and is provided separately from the first mounting holes, the method comprising: placing the mounting plate on the upper surface of the mounting base; fixing the mounting plate placed on the upper surface of the mounting base by fastening the fixing screws into corresponding Type A holes of the plurality of Type A holes through the Type C holes; installing any of the plurality of first phase-advancing capacitors on the upper side of the mounting plate fixed on the upper surface of the mounting base by passing a through-screw through the first Type C hole corresponding to that first phase-advancing capacitor and fastening it into the corresponding Type A hole of the plurality of Type A holes; and installing any of the plurality of first phase-advancing capacitors on the upper side of the mounting plate fixed on the upper surface of the mounting base by fastening the first screw into the first Type B hole corresponding to that first phase-advancing capacitor.

[0008] According to the mounting plate or mounting method of the present disclosure, the burden on the worker performing the mounting work when mounting a new phase-advancing capacitor is reduced.

[0009] 1 is a schematic diagram of an elevator control panel according to embodiment 1. FIG. 2 is a side view of a mounting base according to embodiment 1. FIG. 3 is a top view of the mounting base according to embodiment 1. FIG. 4 is a top view of an example of a newly installed phase-advancing capacitor according to embodiment 1. FIG. 5 is a top view of another example of a newly installed phase-advancing capacitor according to embodiment 1. FIG. 6 is a side view of a mounting base to which a newly installed phase-advancing capacitor according to embodiment 1 is attached. FIG. 7 is a top view of a mounting plate according to embodiment 1. FIG. 8 is a perspective view of a phase-advancing capacitor attached using the mounting plate according to embodiment 1. FIG. 9 is a perspective view of a phase-advancing capacitor attached using the mounting plate according to embodiment 1. FIG. 10 is a top view of a mounting plate according to embodiment 2. FIG. 11 is a top view of a mounting plate according to embodiment 3.

[0010] The embodiments for carrying out the present disclosure will be described with reference to the accompanying drawings. In each drawing, the same or corresponding parts are designated by the same reference numerals, and redundant explanations are appropriately simplified or omitted. Note that the subject matter of the present disclosure is not limited to the following embodiments, and any component of the embodiments may be modified or omitted within the scope of the gist of the present disclosure.

[0011] First Embodiment Fig. 1 is a schematic diagram of an elevator control panel according to a first embodiment.

[0012] The elevator is applied to a building having multiple floors. In this example, the elevator is a hydraulic elevator. The elevator includes a motor (not shown) and a car (not shown). The motor is a drive device that drives, for example, a hydraulic pump. An existing phase-advancing capacitor 1p is connected to the motor to improve the power factor. In this example, multiple phase-advancing capacitors 1p are provided. The phase-advancing capacitors 1p are provided in sets of three, for example, corresponding to each phase of a three-phase alternating current. The car is a device that travels up and down using hydraulics or the like to transport passengers and the like between multiple floors of a building. The operation of the elevator, including the travel of the car, is controlled by a control panel 2. The control panel 2 is provided, for example, in a machine room or the like.

[0013] The control panel 2 has, for example, a rectangular parallelepiped shape. In this example, the height of the control panel 2 is higher than the eye level of a worker 3 performing maintenance work. A mounting base 4 is disposed on the upper surface of the control panel 2. The mounting base 4 is fixed to the upper surface of the control panel 2 by, for example, rivets 5. The rivets 5 are an example of a fastener that fixes the mounting base 4 to the control panel 2. An existing phase-advancing capacitor 1p is attached to the mounting base 4.

[0014] The worker 3 performs elevator maintenance work. The elevator maintenance work includes, for example, replacement work for replacing an existing phase-leading capacitor 1p arranged on the top surface of the control panel 2 with a new phase-leading capacitor 1q. The worker 3 performs the replacement work while standing on a platform such as a stepladder 6. Here, when there is no particular need to distinguish between the existing phase-leading capacitor 1p and the new phase-leading capacitor 1q, they may be simply referred to as phase-leading capacitor 1.

[0015] FIG. 2 is a side view of the mounting base according to the first embodiment.

[0016] In this example, the mounting base 4 is a metal plate bent into a hat shape. The mounting base 4 is fixed to the control panel 2 at its edges with rivets 5. A plurality of holes Ha1 are provided on the top surface of the mounting base 4. Each hole Ha1 is a screw hole with a female thread formed therein. For example, a pop nut 7 may be attached to each hole Ha1 so that a female thread can be formed. Each of the existing holes Ha1 on the mounting base 4 that function as screw holes is an example of a Class A hole. Note that the arrangement of holes Ha1 and other elements in FIG. 2 has been changed as appropriate for ease of viewing.

[0017] The existing phase-advancing capacitors 1p are attached to the mounting base 4 by fastening male screws Sa1 passed through the mounting positions 8 into screw holes Ha1. In this example, the existing phase-advancing capacitors 1p are fixed in at least two places with the screws Sa1.

[0018] In the replacement work, the worker 3 removes the wiring connected to the existing phase-leading capacitor 1p. Then, the worker 3 loosens the screw Sa1 to remove the existing phase-leading capacitor 1p from the mounting base 4.

[0019] Fig. 3 is a top view of the mount according to embodiment 1. Fig. 3 shows the mount 4 with the existing phase advancing capacitor 1p removed.

[0020] The top surface of the mounting base 4 is rectangular. In this example, the mounting base 4 is capable of mounting sets of multiple types of phase-advance capacitors 1p. A set of any type of phase-advance capacitors 1p is mounted on the mounting base 4 according to the type of motor, etc. The phase-advance capacitors 1p differ from one another in terms of, for example, capacity, dimensions, and mounting position 8, depending on the type. The mounting base 4 is provided with a hole Ha1, which is a screw hole used to mount one type of phase-advance capacitor 1p, and a hole Ha2, which is a screw hole used to mount another type of phase-advance capacitor 1p. The existing holes Ha2 on the mounting base 4, which function as screw holes, are examples of Class A holes. Some or all of the holes Ha1 and Ha2 may be the same hole. In other words, the same screw holes may be used to mount a set of one type of phase-advance capacitors 1p and a set of another type of phase-advance capacitors 1p.

[0021] Here, when it is necessary to particularly distinguish between the individual holes Ha1, a hyphenated branch number may be added to the reference symbol, such as hole Ha1-1 and hole Ha1-2. When it is not necessary to particularly distinguish between the individual holes Ha1, the hyphenated branch number is omitted. Similarly, when it is necessary to distinguish between holes of the same type, other types of holes, such as hole Ha2, may also be added with a hyphenated branch number.

[0022] FIG. 4 is a top view of an example of a newly installed phase advancing capacitor according to the first embodiment.

[0023] Each of the new phase leading capacitors 1q has at least two mounting positions 8. The phase leading capacitors 1q are mounted in sets of three on the top surface of the control panel 2. In this example, the capacity of the new phase leading capacitors 1q is the same as the capacity of the existing phase leading capacitors 1p that they are replacing. However, the new phase leading capacitors 1q differ from the existing phase leading capacitors 1p that they are replacing in terms of dimensions, shape, etc. In this example, the arrangement of the mounting positions 8 of the new phase leading capacitors 1q differs from the arrangement of the mounting positions 8 of the existing phase leading capacitors 1p that they are replacing.

[0024] In the replacement work, a set of new phase-leading capacitors 1 of any type is installed depending on the type of motor, etc. The type of phase-leading capacitor 1 is selected depending on, for example, the capacity required to improve the power factor of the motor.

[0025] FIG. 5 is a top view of another example of a newly installed phase advancing capacitor according to the first embodiment.

[0026] Each of the newly installed phase leading capacitors 1r has at least two mounting positions 8. The phase leading capacitors 1r are mounted in sets of three on the top surface of the control panel 2. In this example, the capacity of the newly installed phase leading capacitor 1r is the same as the capacity of the existing phase leading capacitor 1p that it is replacing. On the other hand, the newly installed phase leading capacitor 1r differs from the existing phase leading capacitor 1p that it is replacing in terms of dimensions, shape, etc. In this example, the arrangement of the mounting positions 8 of the newly installed phase leading capacitor 1r differs from the arrangement of the mounting positions 8 of the existing phase leading capacitor 1p that it is replacing.

[0027] Fig. 6 is a side view of a mounting base to which a new phase-advancing capacitor according to embodiment 1 is attached. Note that in Fig. 6, the arrangement of holes Ha1 and the like has been changed as appropriate for clarity, as in Fig. 2. Fig. 6 shows an example of the case where a new phase-advancing capacitor 1q is attached.

[0028] Since the arrangement of the mounting positions 8 of the existing phase-leading capacitors 1p is different from the arrangement of the mounting positions 8 of the new phase-leading capacitors 1q, it may not be possible to directly fasten the screws passed through the mounting positions 8 of the new phase-leading capacitors 1q into the screw holes Ha1. For this reason, the worker 3 attaches the set of new phase-leading capacitors 1q to the mounting base 4 via a mounting plate 9.

[0029] The mounting plate 9 is a rectangular parallelepiped flat plate with its thickness extending vertically. In this example, the mounting plate 9 is made of a non-combustible material, such as iron or other metal. Because the mounting plate 9 is made of a non-combustible material, it can be placed on the top surface of a control panel 2 installed in a control room of a hydraulic elevator, for example. The edges of the mounting plate 9 are also chamfered, which makes it less likely to get caught when handling the mounting plate 9. The mounting plate 9 is placed on the top surface of the mounting base 4 without protruding beyond the top surface of the mounting base 4.

[0030] A plurality of holes Hb1 and a plurality of holes Hc1 are formed on the upper surface of the mounting plate 9. Each hole Hb1 is a screw hole with a female thread formed therein. Each hole Hc1 is a through-hole that penetrates from the upper surface to the lower surface of the mounting plate 9. The new phase-advance capacitor 1q is attached to the mounting base 4 via the mounting plate 9 using a male screw Sb1 and a male through-hole screw Sc. The new phase-advance capacitor 1q is attached to the mounting base 4 together with the mounting plate 9 by passing the through-hole screw Sc through the mounting position 8 through the through-hole Hc1 and fastening it to the corresponding hole Ha1 of the mounting base 4 below. The new phase-advance capacitor 1q is attached to the mounting plate 9 by fastening the screw Sb1 through the mounting position 8 into the threaded hole Hb1. Since the mounting plate 9 is fixed to the mounting base 4 together with the newly installed phase-advance capacitor 1q by the through-hole screws Sc, by attaching the newly installed phase-advance capacitor 1q to the mounting plate 9 by the screws Sb1, the newly installed phase-advance capacitor 1q is attached to the mounting base 4 via the mounting plate 9. In this way, each of the holes Hb1 in the mounting plate 9 functions as a screw hole used to attach the phase-advance capacitor 1q to the mounting plate 9, and is an example of a type B hole. Also, each of the holes Hc1 in the mounting plate 9 functions as a through-hole to pass through the through-hole screws Sc used to attach the phase-advance capacitor 1q to the mounting base 4, and is an example of a type C hole. Also, each of the holes Hb1 and Hc1 is a hole in the mounting plate 9 used to attach the phase-advance capacitor 1q, and is an example of a mounting hole. In this example, the newly installed phase-advance capacitor 1q is fixed at at least two locations with the screws Sb1 or the through-hole screws Sc.

[0031] The thickness of the mounting plate 9 is thicker than the limit engagement length of the screw Sb1. The limit engagement length of the screw Sb1 is the lower limit of the engagement when the screw Sb1 is fastened to a screw hole. The limit engagement length of the screw Sb1 is set in advance, for example, by the diameter or pitch of the screw Sb1. The engagement length of the screw Sb1 is, for example, 0.5 times the diameter of the threaded portion of the screw Sb1. Alternatively, the engagement length of the screw Sb1 is, for example, 3 times the pitch of the screw Sb1. The engagement length of the screw Sb1 may be any of these lengths.

[0032] FIG. 7 is a top view of the mounting plate according to the first embodiment.

[0033] The shape of the upper surface of the mounting plate 9 is rectangular. The shape of the upper surface of the mounting plate 9 is the same as the shape of the upper surface of the mounting base 4. The length of the long side of the upper surface of the mounting plate 9 is the same as the length of the long side of the upper surface of the mounting base 4. The length of the short side of the upper surface of the mounting plate 9 is the same as the length of the short side of the upper surface of the mounting base 4.

[0034] The mounting plate 9 is provided with a plurality of mounting holes used for mounting the new phase-advancing capacitor 1q. The mounting plate 9 is provided with holes Hb1-1, Hb1-2, Hb1-4, and Hb1-6, which are type B holes. The mounting plate 9 is provided with holes Hc1-3 and Hc1-5, which are type C holes. The type C hole Hc1 is provided so that when the mounting plate 9 is placed on the top surface of the mounting base 4, it is in the same position on the horizontal plane as the corresponding screw hole, such as hole Ha1, on the mounting base 4. In this example, hole Hc1-3 on the mounting plate 9 corresponds to hole Ha1-4 on the mounting base 4. Furthermore, hole Hc1-5 on the mounting plate 9 corresponds to hole Ha1-5 on the mounting base 4. Each of holes Hb1-1, Hb1-2, Hc1-3, Hb1-4, Hc1-5, and Hb1-6 is a mounting hole used to mount a new phase leading capacitor 1q.

[0035] At least two mounting holes are provided for each of the new phase-advancing capacitors 1q. At least one of the mounting holes is a Type B hole that functions as a screw hole. At least two of the mounting holes are Type C holes that function as through holes.

[0036] Furthermore, a through-hole Hd1 is provided in the mounting plate 9. The through-hole Hd1 is provided so that when the mounting plate 9 is placed on the top surface of the mounting base 4, the through-hole Hd1 is located at the same position on the horizontal plane as the corresponding screw hole Ha1, etc., in the mounting base 4. In this example, the hole Hd1 in the mounting plate 9 corresponds to the hole Ha1-1 in the mounting base 4. When the new phase-advancing capacitor 1q is installed, the mounting plate 9 is fixed to the mounting base 4 by passing a fixing screw Sd through the through-hole Hd1 and fastening it into the corresponding hole Ha1-1 in the mounting base 4 below. In this way, the hole Hd1 in the mounting plate 9 functions as a through-hole used to fix the mounting plate 9 to the mounting base 4, and is an example of a type-C hole. The mounting plate 9 may be provided with multiple type-C holes. The type-C hole in the mounting plate 9 is a through-hole provided separately from the type-C hole in the mounting plate 9.

[0037] An orientation alignment marker 10 is attached to the upper surface of the mounting plate 9. The orientation alignment marker 10 is attached to one of the four corners of the upper surface. In this example, the orientation alignment marker 10 is attached so as to be located in the far left corner as seen by the worker 3 when the worker 3 places the mounting plate 9 facing the front of the control panel 2. The orientation alignment marker 10 may be marked with a punch or the like, or may be marked with paint or tape, for example.

[0038] The mounting plate 9 is also used when mounting a different type of phase-leading capacitor, such as a new phase-leading capacitor 1r, to the mounting base 4, other than the new phase-leading capacitor 1q. In this example, the mounting plate 9 accommodates the mounting of a set of three types of phase-leading capacitors: a first phase-leading capacitor, a second phase-leading capacitor, and a third phase-leading capacitor. The first phase-leading capacitor is, for example, either the new phase-leading capacitor 1q or the new phase-leading capacitor 1r. The second phase-leading capacitor is, for example, the other of the new phase-leading capacitor 1q or the new phase-leading capacitor 1r.

[0039] Here, the mounting hole used to mount the first phase-advancing capacitor is an example of a first mounting hole. The type B holes, type C holes, and type T holes used to mount the first phase-advancing capacitor are examples of the first type B holes, first type C holes, and first type T holes, respectively. The male screw Sb1 fastened to the type B holes when mounting the first phase-advancing capacitor is an example of a first screw. Similarly, the mounting hole used to mount the second phase-advancing capacitor is an example of a second mounting hole. The type B holes, type C holes, and type T holes used to mount the second phase-advancing capacitor are examples of the second type B holes, second type C holes, and second type T holes, respectively. The male screw fastened to the type B holes when mounting the second phase-advancing capacitor is an example of a second screw. Similarly, the mounting hole used to mount the third phase-advancing capacitor is an example of a third mounting hole. The type B holes, type C holes, and type D holes used when installing the third phase-advancing capacitor are examples of the third type B holes, third type C holes, and third type T holes, respectively. The male screw fastened to the type B hole when installing the third phase-advancing capacitor is an example of the third screw.

[0040] The mounting plate 9 is provided with a plurality of mounting holes used for mounting the new phase-advancing capacitor 1r. The mounting plate 9 is provided with holes Hb2-2, Hb2-4, and Hb2-6, which are type B holes. The mounting plate 9 is provided with holes Hc2-1, Hc2-3, and Hc2-5, which are type C holes. In this example, hole Hc2-1 of the mounting plate 9 corresponds to hole Ha2-1 of the mounting base 4. Hole Hc2-3 of the mounting plate 9 corresponds to hole Ha2-3 of the mounting base 4. Hole Hc2-5 of the mounting plate 9 corresponds to hole Ha2-5 of the mounting base 4. Each of holes Hc2-1, Hb2-2, Hc2-3, Hb2-4, Hc2-5, and Hb2-6 is a mounting hole used for mounting the new phase-advancing capacitor 1r.

[0041] Furthermore, the mounting plate 9 is provided with a plurality of mounting holes used for mounting a third phase leading capacitor. The mounting plate 9 is provided with holes Hb3-1, Hb3-2, Hb3-4, and Hb3-6, which are type B holes. The mounting plate 9 is provided with holes Hc3-3 and Hc3-5, which are type C holes. In this example, hole Hc3-3 of the mounting plate 9 corresponds to hole Ha2-4 of the mounting base 4. Furthermore, hole Hc3-5 of the mounting plate 9 corresponds to hole Ha2-5 of the mounting base 4. Each of holes Hb3-1, Hb3-2, Hc3-3, Hb3-4, Hc3-5, and Hb3-6 is a mounting hole used for mounting a third phase leading capacitor.

[0042] A type-T hole Hd3 is provided in the mounting plate 9. In this example, the hole Hd3 in the mounting plate 9 corresponds to the hole Ha2-1 in the mounting base 4. When mounting the third phase-advancing capacitor, the mounting plate 9 is fixed to the mounting base 4 by passing a fixing screw Sd through the through-hole Hd3 and fastening it into the corresponding hole Ha2-1 in the mounting base 4 below.

[0043] Note that the type C or type D holes used when installing one type of phase-advance capacitor may be the same as the type C or type D holes used when installing another type of phase-advance capacitor. In this example, holes Hc2-1 and Hd3 are the same hole. Also, holes Hc2-5 and Hc3-5 are the same hole.

[0044] Furthermore, the diameter of a Type B hole used to install one type of phase-advancing capacitor may be different from the diameter of a Type B hole used to install another type of phase-advancing capacitor. For example, the diameter of hole Hb1 and the diameter of hole Hb2 may be different from each other. The diameter of hole Hb1 and the diameter of hole Hb3 may be different from each other. The diameter of hole Hb2 and the diameter of hole Hb3 may be different from each other.

[0045] Next, an example of replacement work when a new phase advancing capacitor 1q is installed will be described with reference to Fig. 8. Fig. 8 is a perspective view of the phase advancing capacitor installed using the installation plate according to the first embodiment.

[0046] The worker 3 performing the replacement work stands on a platform such as a stepladder 6 and removes the wiring connected to the existing phase-leading capacitor 1p from the top surface of the control panel 2. The worker 3 then loosens the screws Sa1 on the top surface of the control panel 2 to remove the existing phase-leading capacitor 1p from the mounting base 4. The worker 3 then removes the removed existing phase-leading capacitor 1p from the mounting base 4.

[0047] Thereafter, the worker 3 places the mounting plate 9 on the upper surface of the mounting base 4. The worker 3 places the mounting plate 9 on the upper surface of the mounting base 4, for example, with the side with the orientation alignment marker 10 facing upward. When working facing the front of the control panel 2, the worker 3 orients the mounting plate 9 so that the orientation alignment marker 10 is located in the back left corner. The worker 3 aligns the mounting plate 9 on the upper surface of the mounting base 4 so that the four edges of the mounting plate 9 align with the four edges of the upper surface of the mounting base 4.

[0048] Thereafter, the worker 3 passes the fixing screw Sd through the hole Hd1, which is a type C hole, and fastens it into the corresponding hole Ha1-1 below in the mounting base 4, thereby fixing the mounting plate 9 to the mounting base 4. At this time, the worker 3 may fix the mounting plate 9 while leaving some room for fine adjustment to align the position of the type C hole in the mounting plate 9 with the corresponding type A hole in the mounting base 4.

[0049] Thereafter, worker 3 aligns the mounting position 8 of one of the phase-advanced capacitors 1q with hole Hc1-3, which is a type-C hole. Worker 3 passes through a through-hole screw Sc into the mounting position 8 and hole Hc1-3. Worker 3 fastens the through-hole screw Sc into hole Ha1-4 of the mounting base 4, thereby attaching the new phase-advanced capacitor 1q together with the mounting plate 9 to the mounting base 4. Similarly, worker 3 aligns the mounting position 8 of the other phase-advanced capacitor 1q with hole Hc1-5, which is a type-C hole. Worker 3 passes through the through-hole screw Sc into the mounting position 8 and hole Hc1-5. Worker 3 fastens the through-hole screw Sc into hole Ha1-5 of the mounting base 4, thereby attaching the new phase-advanced capacitor 1q together with the mounting plate 9 to the mounting base 4.

[0050] Thereafter, the worker 3 aligns the mounting positions 8 of the newly installed phase-leading capacitors 1q that do not yet have screws Sb1 attached with the type B holes Hb1. The worker 3 attaches each of the newly installed phase-leading capacitors 1q to the mounting plate 9 by fastening the screws Sb1 that have been passed through the mounting positions 8 into the holes Hb1.

[0051] Thereafter, the worker 3 connects the wiring between each of the newly installed phase-advancing capacitors 1q and the motor, etc.

[0052] Next, an example of replacement work when a new phase advancing capacitor 1r is installed will be described with reference to Fig. 9. Fig. 9 is a perspective view of the phase advancing capacitor installed using the installation plate according to the first embodiment.

[0053] The worker 3 performing the replacement work aligns the mounting plate 9 on the top surface of the mounting base 4 in the same way as when installing a new phase-advancing capacitor 1q.

[0054] Thereafter, the worker 3 aligns the mounting position 8 of one of the phase-leading capacitors 1r with the hole Hc2-1, which is a type-C hole. The worker 3 passes the through-hole screw Sc through the mounting position 8 and the hole Hc2-1. The worker 3 fastens the through-hole screw Sc into the hole Ha2-1 of the mounting base 4, thereby attaching the new phase-leading capacitor 1r together with the mounting plate 9 to the mounting base 4. Similarly, the worker 3 aligns the mounting position 8 of the other phase-leading capacitor 1r with the hole Hc2-3, which is a type-C hole. The worker 3 passes the through-hole screw Sc through the mounting position 8 and the hole Hc2-3. The worker 3 fastens the through-hole screw Sc into the hole Ha2-3 of the mounting base 4, thereby attaching the new phase-leading capacitor 1r together with the mounting plate 9 to the mounting base 4. Similarly, the worker 3 aligns the mounting position 8 of the remaining phase-leading capacitor 1r with the hole Hc2-5, which is a type-C hole. The worker 3 passes the through-screw Sc through the mounting position 8 and the hole Hc2-5. The worker 3 fastens the through-screw Sc into the hole Ha2-5 of the mounting base 4, thereby attaching the mounting plate 9 and the newly installed phase-advancing capacitor 1r to the mounting base 4.

[0055] Thereafter, the worker 3 aligns the mounting positions 8 of the newly installed phase-leading capacitors 1r, which do not yet have screws Sb2 attached, with the type B holes Hb2. The worker 3 attaches each of the newly installed phase-leading capacitors 1r to the mounting plate 9 by fastening the screws Sb2 that have been passed through the mounting positions 8 into the holes Hb2.

[0056] Thereafter, the worker 3 connects the wiring between each of the newly installed phase-advancing capacitors 1q and the motor, etc.

[0057] As described above, the mounting plate 9 according to the first embodiment is a plate for mounting a plurality of first phase leading capacitors to the mounting base 4. The mounting base 4 is disposed on the upper surface of the elevator control panel 2. A plurality of Class A holes are provided in the mounting base 4. Each of the Class A holes is a screw hole. At least two first mounting holes are provided in the mounting plate 9 for each of the first phase leading capacitors. The first mounting holes are used to mount the first phase leading capacitors on the upper side of the mounting plate 9 disposed on the upper surface of the mounting base 4. At least one of the first mounting holes is a first Class B hole. The first Class B hole is a screw hole for fastening a first screw for mounting the corresponding first phase leading capacitor. At least two of the first mounting holes are first Class C holes. The first Class C holes are through holes for passing through screws Sc for mounting the corresponding first phase leading capacitors so that they can be fastened to the corresponding Class A holes.

[0058] With this configuration, even if the dimensions of the existing phase-advance capacitor and the new phase-advance capacitor differ, the new phase-advance capacitor can be attached via the mounting plate 9, eliminating the need to modify the mounting base 4 at the work site. This reduces the burden on the worker 3 performing installation work, such as replacing the phase-advance capacitor. Furthermore, the mounting plate 9 is fixed to the mounting base 4 at at least two locations. This reduces rattles between the mounting plate 9 and the mounting base 4. Furthermore, each phase-advance capacitor is attached to the mounting plate 9 at at least two locations. This reduces rattles between the phase-advance capacitor and the mounting plate 9. Furthermore, the mounting plate 9 is attached together with the phase-advance capacitor using the Class A screw holes, which are existing screw holes in the mounting base 4, reducing the burden on the worker 3 performing the installation work. Furthermore, because the mounting plate 9 used for installation is flat, it can be easily carried to the work site where the installation work will be performed. This prevents an increase in the burden on the worker 3 performing the installation work.

[0059] The shape of the upper surface of the mounting plate 9 is the same as the shape of the upper surface of the mounting base 4. The mounting plate 9 overlaps the upper surface of the mounting base 4 without protruding from it.

[0060] This configuration makes it easier to align the mounting plate 9. Furthermore, since the mounting plate 9 does not protrude from the upper surface of the mounting base 4, the mounting plate 9 is less likely to interfere with other maintenance work.

[0061] The thickness of the mounting plate 9 is greater than the limit fit length of the first screw.

[0062] With this configuration, the phase-advance capacitor can be attached with sufficient strength even if the length of the first screw is set so that the lower end does not protrude from the underside of the mounting plate 9. As a result, the underside of the mounting plate 9 is in close contact with the upper surface of the mounting base 4 without floating, so that the mounting plate 9 and the phase-advance capacitor 1 attached thereto are stably fixed to the mounting base 4.

[0063] In addition to the first mounting holes, Type C holes are provided in the mounting plate 9. The Type C holes are through holes through which the fixing screws Sd that secure the mounting plate 9, which is placed on the top surface of the mounting base 4, to the mounting base 4 can be passed so that they can be fastened to the corresponding Type A holes.

[0064] With this configuration, it is possible to increase the number of fixing points for fixing the mounting plate 9 to the mounting base 4, regardless of the structure of the phase-advancing capacitor 1, and without having to perform any machining work on the mounting base 4 at the work site. As a result, the mounting plate 9 and the phase-advancing capacitor 1 mounted thereon can be stably fixed by the mounting base 4.

[0065] Furthermore, at least two second mounting holes are provided in the mounting plate 9 for each second phase leading capacitor. The second mounting holes are used to mount the second phase leading capacitors on the upper side of the mounting plate 9, which is disposed on the upper surface of the mounting base 4. The second phase leading capacitors are a different type of capacitor from the first phase leading capacitors. At least one of the second mounting holes is a second type B hole. The second type B hole is a screw hole for fastening a second screw for mounting the corresponding second phase leading capacitor. At least two of the second mounting holes are second type C holes. The second type C holes are through holes for passing through screws Sc for mounting the corresponding second phase leading capacitor so that they can be fastened into the corresponding type A holes. At least one of the second type C holes is the same through hole as the first type C hole.

[0066] With this configuration, it becomes possible to use one mounting plate 9 to mount a plurality of types of phase-advancing capacitors 1. This does not increase the workload for management, including checking the type of mounting plate 9, and does not increase the burden on the worker 3 performing the mounting work.

[0067] Furthermore, the diameter of the second type B hole is different from the diameter of the first type B hole.

[0068] With this configuration, the diameters of the first screw for attaching the first phase-leading capacitor and the second screw for attaching the second phase-leading capacitor can be made different from each other. This makes it impossible for the first screw to be fastened into the second type B hole, making it difficult for the worker 3 to confuse the first type B hole and the second type B hole. This further reduces the burden on the worker 3 performing the installation work.

[0069] Furthermore, at least two through-threads Sc are tightened before the first screws are tightened. Furthermore, the fixing screws Sd are tightened before the first screws are tightened. Furthermore, the fixing screws Sd and the through-threads Sc are tightened before the first screws are tightened.

[0070] With this configuration, the phase-advance capacitors are attached after the mounting plate 9 is fixed to the mounting base 4, which makes it easier to perform procedures such as arranging the phase-advance capacitors on the mounting plate 9. This further reduces the burden on the worker 3 performing the installation work.

[0071] In addition, in order to facilitate the alignment of the mounting plate 9, the mounting plate 9 may be configured so that at least a portion of the edge of its lower surface extends beyond the upper surface of the mounting base 4 and protrudes downward so as to hang over the edge of the upper surface of the mounting base 4.

[0072] Embodiment 2 In Embodiment 2, differences from the example disclosed in Embodiment 1 will be described in particular detail. For features not described in Embodiment 2, any of the features of the example disclosed in Embodiment 1 may be adopted.

[0073] FIG. 10 is a top view of the mounting plate according to the second embodiment.

[0074] Alignment markers 11 are provided on the upper surface of the mounting plate 9. The alignment markers 11 may be provided by marking with a scribe or by marking with paint or tape, for example. The alignment markers 11 are provided with reference to fasteners such as rivets 5 that secure the mounting base 4 to the control panel 2. The alignment markers 11 are provided with reference to a plurality of rivets 5 so that the position within the surface of the mounting plate 9 can be determined. In this example, the alignment markers 11 are provided in the form of line segments connecting two rivets 5 when viewed from above when the mounting plate 9 is positioned so that the four edges of the mounting plate 9 are aligned with the four edges of the upper surface of the mounting base 4.

[0075] With this configuration, the worker 3 can easily align the mounting plate 9 by aligning the alignment marker 11 with the position of the rivet 5. This further reduces the burden on the worker 3 performing the mounting work.

[0076] Embodiment 3. In embodiment 3, differences from the examples disclosed in embodiment 1 and embodiment 2 will be described in particular detail. Features not described in embodiment 3 may be any of the features of the examples disclosed in embodiment 1 and embodiment 2.

[0077] FIG. 11 is a top view of the mounting plate according to the third embodiment.

[0078] Edge markers 12 are attached to the upper surface of the mounting plate 9. The edge markers 12 may be markings using paint or tape, for example. The edge markers 12 are attached to the edges of the Type C holes. In this example, the edge markers 12 are attached to the edges of holes Hd1 and Hd3, which function as Type C holes.

[0079] Mounting markers 13 are provided on the upper surface of the mounting plate 9. The mounting markers 13 may be markings made of paint or tape, for example. The mounting markers 13 are used for aligning the phase-advantage capacitors 1 when they are placed on the mounting plate 9. The mounting marker 13 used for mounting the first phase-advantage capacitor is provided so as to indicate the position when the first phase-advantage capacitor is mounted, with reference to the first mounting hole of the first phase-advantage capacitor. The mounting marker 13 used for mounting the second phase-advantage capacitor is provided so as to indicate the position when the second phase-advantage capacitor is mounted, with reference to the second mounting hole of the second phase-advantage capacitor. The mounting marker 13 used for mounting the third phase-advantage capacitor is provided so as to indicate the position when the third phase-advantage capacitor is mounted, with reference to the third mounting hole of the third phase-advantage capacitor. The shape of the mounting markers 13 is, for example, a rectangle to indicate the position of the phase-advantage capacitor 1. The shape of the attachment marker 13 may be, for example, the outline of the horizontal projection of the phase advancing capacitor 1 or the outline of the bottom surface of the phase advancing capacitor 1 .

[0080] The edge markers 12 and the mounting markers 13 may be marked so as to be distinguishable by color or line type according to the type of phase leading capacitor 1. In this case, the edge markers 12 and mounting markers 13 corresponding to the same type of phase leading capacitor 1 are marked with the same color or type. In this example, the edge markers 12 and mounting markers 13 used when mounting the first phase leading capacitor are indicated by thick dashed lines. The mounting markers 13 used when mounting the second phase leading capacitor are indicated by thick solid lines. The edge markers 12 and mounting markers 13 used when mounting the third phase leading capacitor are indicated by thick dashed lines.

[0081] With this configuration, the worker 3 can easily distinguish between type-C holes and the multiple holes provided on the mounting plate 9, and can easily fix the mounting plate 9 to the mounting base 4. Furthermore, the worker 3 can easily distinguish the arrangement of the phase-leading capacitor 1 on the mounting plate 9 and the mounting holes to be used depending on the type of phase-leading capacitor 1, and can easily align the phase-leading capacitor 1 on the mounting plate 9. This further reduces the burden on the worker 3 performing the installation work.

[0082] The mounting plate and mounting method according to the present disclosure can be applied to mounting a phase-advancing capacitor to a mounting base provided on the top surface of an elevator control panel.

[0083] 1, 1p, 1q, 1r: phase-advancing capacitor; 2: control panel; 3: worker; 4: mounting base; 5: rivet; 6: stepladder; 7: pop nut; 8: mounting position; 9: mounting plate; 10: direction alignment marker; 11: position alignment marker; 12: edge marker; 13: mounting marker

Claims

1. A mounting plate for mounting a plurality of first phase leading capacitors on a mounting base that is disposed on the upper surface of an elevator control panel and that is provided with a plurality of Class A holes, each of which is a screw hole; at least two first mounting holes used to mount the plurality of first phase leading capacitors on the upper side of the mounting plate that is disposed on the upper surface of the mounting base are provided for each of the plurality of first phase leading capacitors; at least one of the first mounting holes is a first Class B hole that is a screw hole for fastening a first screw that mounts a corresponding one of the plurality of first phase leading capacitors; and at least two of the first mounting holes are first Class C holes that are through holes that allow through-holes for passing through screws that mount a corresponding one of the plurality of first phase leading capacitors so that they can be fastened to corresponding Class A holes among the plurality of Class A holes.

2. The mounting plate according to claim 1, wherein the shape of the upper surface is the same as the shape of the upper surface of the mounting base and overlaps the upper surface of the mounting base without protruding from it.

3. A mounting plate according to claim 1 or claim 2, the thickness of which is greater than the limit engagement length of the first screw.

4. A mounting plate as claimed in any one of claims 1 to 3, having on its top surface an alignment marker used for aligning the mounting plate relative to the mounting base, the alignment marker being based on a fixture that secures the mounting base to the control panel.

5. A mounting plate according to any one of claims 1 to 4, wherein an attachment marker is provided on the top surface thereof, the attachment marker being used to align one of the plurality of first phase-advancing capacitors with respect to the mounting plate and being referenced to the first mounting hole corresponding to that first phase-advancing capacitor.

6. A mounting plate as claimed in any one of claims 1 to 5, wherein a Type C hole is provided separately from the first mounting hole, which is a through hole through which a fixing screw for fixing the mounting plate placed on the upper surface of the mounting base can be passed so as to be fastened to a corresponding Type A hole among the plurality of Type A holes.

7. The mounting plate according to claim 6, wherein an edge marker is provided on the upper surface of the edge of the type C hole.

8. A mounting plate as claimed in any one of claims 1 to 7, wherein second mounting holes used to mount the plurality of second phase-advantage capacitors on the upper side of the mounting plate arranged on the upper surface of the mounting base are provided in at least two locations for each of the plurality of second phase-advantage capacitors so that a plurality of second phase-advantage capacitors of a type different from the plurality of first phase-advantage capacitors can be mounted, at least one of the second mounting holes is a screw hole for fastening a second screw for mounting a corresponding second phase-advantage capacitor of the plurality of second phase-advantage capacitors and is a second type B hole different from the first type B hole, at least two of the second mounting holes are second type C holes which are through holes for passing through screws for mounting a corresponding second phase-advantage capacitor of the plurality of second phase-advantage capacitors so that they can be fastened to corresponding type A holes of the plurality of type A holes, and at least one of the second type C holes is the same through hole as the first type C hole.

9. The mounting plate according to claim 8, wherein the diameter of the second type B hole is different from the diameter of the first type B hole.

10. A method for mounting the plurality of first phase-leading capacitors to the mounting base using a mounting plate as defined in any one of claims 1 to 9, comprising: placing the mounting plate on the upper surface of the mounting base; mounting any one of the plurality of first phase-leading capacitors on the upper side of the mounting plate placed on the upper surface of the mounting base by passing a through screw through the first Class C hole corresponding to that first phase-leading capacitor and fastening it to a corresponding Class A hole among the plurality of Class A holes; and mounting any one of the plurality of first phase-leading capacitors on the upper side of the mounting plate placed on the upper surface of the mounting base by fastening the first screw into the first Class B hole corresponding to that first phase-leading capacitor.

11. The installation method according to claim 10, wherein at least two through screws are tightened before tightening the first screw.

12. A method for mounting the plurality of first phase-leading capacitors to the mounting base using the mounting plate according to claim 6, comprising: placing the mounting plate on the upper surface of the mounting base; fixing the mounting plate placed on the upper surface of the mounting base by fastening the fixing screws through the Type C holes into corresponding Type A holes of the plurality of Type A holes; attaching any of the plurality of first phase-leading capacitors to the upper side of the mounting plate fixed to the upper surface of the mounting base by passing a through screw through the first Type C hole corresponding to that first phase-leading capacitor and fastening it to the corresponding Type A hole of the plurality of Type A holes; and attaching any of the plurality of first phase-leading capacitors to the upper side of the mounting plate fixed to the upper surface of the mounting base by fastening the first screw into the first Type B hole corresponding to that first phase-leading capacitor.

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