JP7392882B1 - Terminal blocks and elevator equipment - Google Patents

Abstract

The present invention provides a terminal block that can be downsized while ensuring an insulating distance between terminals.
[Solution] It has a surface 21a on the rotating electric machine 3 side and a surface 22 on the external power source side that faces the surface 21a on the rotating electric machine 3 side, and extends from the surface 21a on the rotating electric machine 3 side to the surface 22 on the external power source side. A first insulating plate 4a has a terminal through hole 5 that penetrates through the terminal through hole 5, and a terminal 6 can be inserted into each of the terminal through holes 5, and the terminal through hole 5 has a first through hole 100, The first insulating plate 4a includes a second through-hole 101 closest to the first through-hole 100 among the terminal through-holes 5 other than the first through-hole 100, and the first insulating plate 4a has a surface 21a on the rotating electric machine 3 side. , a recess 23 is provided between the first through hole 100 and the second through hole 101.
[Selection diagram] Figure 4

Description

The present disclosure relates to a terminal block used for electrically connecting a plurality of wires to a plurality of wires, and an elevator apparatus including the terminal block.

Conventional terminal blocks include a flat insulating board with a plurality of bolt insertion holes. Then, bolts serving as terminals are inserted into each bolt insertion hole of the insulating board. (For example, see Patent Document 1)

JP2014-041771A

In the above-mentioned conventional terminal block, when the distance between the terminals is reduced in order to downsize the terminal block, there is a risk that the insulation distance between adjacent terminals may become insufficient and a short circuit may occur.

The present disclosure has been made to solve the above problems, and provides a terminal block that can be downsized while ensuring an insulating distance between terminals.

The terminal block according to the present disclosure has a first surface and a second surface opposite to the first surface, and has a plurality of first through holes penetrating from the first surface to the second surface. and a first insulating plate in which a terminal can be inserted into each of the first plurality of through holes, and the first plurality of through holes are the first through hole and the first through hole other than the first through hole. a second through hole that is closest to the first through hole among the first plurality of through holes; A second plurality of recesses having a first recess between the through hole, a contact surface that contacts the first surface, and an opposing surface that faces the contact surface, and that penetrate from the contact surface to the opposing surface. a second insulating plate having through-holes in which a terminal can be inserted into each of the second plurality of through-holes, and a fixing member made of a conductive material connects the terminal to the first insulating plate. When the terminals are fixed and inserted into the second plurality of through-holes, the opposing surface of the second insulating plate is closer to the opposing surface than the surface of the fixing member that is opposite to the surface that contacts the first surface. When viewed from the vertical direction, it is arranged on the second insulating plate side with the contact surface of the second insulating plate as a reference.

An elevator device according to the present disclosure includes a rotating electrical machine and a terminal block electrically connected to the rotating electrical machine, and the terminal block has a first surface and a second surface opposite to the first surface. , and has a first plurality of through holes penetrating from the first surface to the second surface, and a terminal can be inserted into each of the first plurality of through holes. The first plurality of through holes include a first through hole and a second through hole that is closest to the first through hole among the first plurality of through holes other than the first through hole. The first insulating plate has a first recess between the first through hole and the second through hole on the first surface, a contact surface that contacts the first surface, and a contact surface that contacts the first surface. and a second plurality of through holes penetrating from the contact surface to the opposite surface, and a terminal can be inserted into each of the second plurality of through holes. In a state where the terminal and the first insulating plate are fixed by a fixing member including an insulating plate and made of a conductive material, and the terminal is inserted into the second plurality of through holes, the first surface of the fixing member The opposing surface of the second insulating plate is closer to the second insulating plate with respect to the contact surface of the second insulating plate when viewed from a direction perpendicular to the opposing surface. Placed.

According to the present disclosure, it is possible to downsize the terminal block while ensuring the insulation distance between the terminals.

FIG. 2 is a diagram showing a configuration around a rotating electric machine of an elevator in Embodiment 1. FIG. FIG. 2 is a side sectional view of the terminal block in Embodiment 1. FIG. 3 is a diagram showing a first insulating plate in Embodiment 1. FIG. 3 is a diagram showing a state in which the terminal block in Embodiment 1 is taken out from the terminal box. FIG. 3 is a diagram illustrating a spatial distance between conductive parts in Embodiment 1. FIG. FIG. 3 is a diagram illustrating creepage distance between conductive parts in Embodiment 1. FIG. FIG. 7 is a diagram showing a first insulating plate in Embodiment 2. FIG. 7 is a diagram showing a state in which the terminal block in Embodiment 2 is taken out from the terminal box. FIG. 7 is a diagram showing the positional relationship between the notch of the first insulating plate and the terminal fixing nut in Embodiment 2; FIG. 7 is a side sectional view of a terminal block in Embodiment 3. 7 is a diagram showing a second insulating plate in Embodiment 3. FIG. FIG. 7 is a diagram illustrating the spatial distance between terminal fixing nuts in Embodiment 3.

Embodiment 1.
The configuration around the rotating electric machine 3 of the elevator including the terminal block 1a in Embodiment 1 will be described. FIG. 1 is a diagram showing a configuration around a rotating electrical machine 3 of an elevator in the first embodiment. In FIG. 1, the terminal block 1a is arranged in a terminal box 2, and the terminal box 2 is installed on the side surface of a rotating electric machine 3. The terminal block 1a is used to supply power to the rotating electrical machine 3, and electrically connects internal wiring of the rotating electrical machine 3 to an external power source. Although not shown, the external power source is installed closer to the front of the paper than the terminal box 2 in FIG.

FIG. 2 is a side sectional view of the terminal block 1a in the first embodiment. In FIG. 2, the terminal block 1a includes a first insulating plate 4a, a terminal 6 inserted into a terminal through-hole 5, which is a plurality of first through-holes provided in the first insulating plate 4a, and a terminal block 1a. A collar 7 covering the outer circumference of the terminal 6, a terminal fixing nut 8 which is a fixing member for fixing the terminal 6 to the first insulating plate 4a, and an electrical connection between the two terminals 6 lined up in the direction perpendicular to the plane of the paper in FIG. bus bar 20 to be connected to the first insulating plate 4a, a stud bolt 10 inserted into the stud bolt through hole 9 provided in the first insulating plate 4a and fixed to the terminal box 2, and the stud bolt 10 being connected to the first insulating plate 4a. and a stud bolt fixing nut 11 for fixing to. Although not shown, the external power source is installed on the right side of the paper surface of the paper in FIG. 2 relative to the terminal box 2.

The terminal box 2 stores the terminal block 1a therein, and is fixed to the rotating electric machine 3. The terminal box 2 may be formed of an insulator or a conductive material.

FIG. 3 is a diagram showing the first insulating plate 4a in the first embodiment. FIG. 3(a) is a diagram seen from the rotating electric machine 3 side, and FIG. 3(b) is a diagram seen from the external power supply side. In FIG. 3, the first insulating plate 4a has a first surface 21a on the rotating electrical machine 3 side, and a second surface 22 on the external power source side opposite to the rotating electrical machine 3 side surface 21a. , and has a plurality of terminal through holes 5 and a plurality of stud bolt through holes 9 penetrating from the surface 21a on the rotating electric machine 3 side to the surface 22 on the external power source side. Furthermore, the first insulating plate 4a has a recess 23, which is a first recess, on the surface 21a on the rotating electric machine 3 side, and a recess 24, which is a second recess, on the surface 22 on the external power source side. The first insulating plate 4a is made of an insulator.

A terminal 6 can be inserted into each terminal through hole 5, and a stud bolt 10 can be inserted into each stud bolt through hole 9. Further, the plurality of terminal through holes 5 include a first through hole 100 and a second through hole 101. Here, among the terminal through holes 5 other than the first through hole 100, the terminal through hole 5 closest to the first through hole 100 is defined as the second through hole 101.

The recess 23 is formed between the first through hole 100 and the second through hole 101 on the surface 21a on the rotating electric machine 3 side. The recess 23 is formed to form a linear groove between the first through hole 100 and the second through hole 101, for example, as shown in FIG. 3(a). Further, the recess 24 is formed between the first through hole 100 and the second through hole 101 on the surface 22 on the external power supply side. For example, the recess 24 is formed to form a linear groove between the first through hole 100 and the second through hole 101, as shown in FIG. 3(b).

FIG. 4 is a diagram showing a state in which the terminal block 1a according to the first embodiment is taken out from the terminal box 2. FIG. 4(a) is a diagram seen from the rotating electric machine 3 side, and FIG. 4(b) is a diagram seen from the external power supply side. Each configuration will be described below with reference to FIGS. 2 and 4.

Terminal 6 is made of a conductive material. For example, a rod-shaped terminal or a bolt with a male thread cut on the outer peripheral surface is used as the terminal 6. A plurality of terminals 6 are used in the terminal block 1a, and each terminal 6 is inserted into a terminal through-hole 5 provided in the first insulating plate 4a.

The collar 7 has a cylindrical shape, and the terminal 6 is inserted into the cylindrical through-hole portion. The collar 7 is arranged between the external power supply side surface 22 of the first insulating plate 4a and the bus bar 20. The collar 7 may be made of an insulator or a conductive material.

The bus bar 20 is a plate-shaped member made of a conductive material, and has two through holes into which the terminals 6 are inserted. By inserting the terminals 6 into the two through holes provided in the bus bar 20, the two terminals 6 inserted into the through holes can be electrically connected. The bus bar 20 is arranged between the collar 7 and the terminal fixing nut 8. Crimp terminals 25 made of a conductive material are attached to both ends of the bus bar 20, respectively. By attaching the tip of the internal wiring of the rotating electrical machine 3 and the tip of the wiring of the external power source to these two crimp terminals 25, respectively, the internal wiring of the rotating electrical machine 3 and the external power source can be electrically connected. Note that by sandwiching the crimp terminals 25 between the collar 7 and the bus bar 20 or between the bus bar 20 and the terminal fixing nut 8, the crimp terminals 25 are fixed to both ends of the bus bar 20, and the bus bar 20 and the crimp terminals 25 are fixed. Although the electrical connection can be made, the crimp terminals 25 may be attached to the bus bar 20 by other methods.

The terminal fixing nut 8 is, for example, a hexagonal nut, and has a female threaded through hole on its inner peripheral surface. The terminal 6 can be inserted into the through hole portion of the terminal fixing nut 8. With the terminal 6 inserted into the terminal through-hole 5 of the first insulating plate 4a, terminal fixing nuts are inserted from the surface 21a side of the first insulating plate 4a on the rotating electric machine 3 side and the surface 22 side on the external power source side. By tightening 8, the first insulating plate 4a and the terminal 6 can be fixed. Further, since the collar 7 and the bus bar 20 are arranged between the surface 21a of the first insulating plate 4a on the side of the rotating electric machine 3 and the terminal fixing nut 8, by tightening the terminal fixing nut 8, the collar 7 and The busbar 20 can also be fixed. The terminal fixing nut 8 may be made of an insulator or a conductive material.

The stud bolt 10 is a bolt with male threads cut on the outer peripheral surface of both end portions. A plurality of stud bolts 10 are used in the terminal block 1a, one end of the stud bolt 10 is inserted and fixed into the wall on the rotating electric machine 3 side inside the terminal box 2, and the other end is provided on the first insulating plate 4a. It is inserted into the stud bolt through hole 9. Stud bolt 10 may be formed of an insulator or a conductive material.

The stud bolt fixing nut 11 is, for example, a hexagonal nut, and has a through hole with a female thread cut on its inner peripheral surface. The stud bolt 10 can be inserted into the through hole portion of the stud bolt fixing nut 11. With the stud bolt 10 inserted into the stud bolt through hole 9 of the first insulating plate 4a, the stud bolts are inserted from the surface 21a side of the first insulating plate 4a on the rotating electric machine 3 side and the surface 22 side on the external power supply side. By tightening the fixing nut 11, the first insulating plate 4a and the stud bolt 10 can be fixed. The stud bolt fixing nut 11 may be made of an insulator or a conductive material.

Next, a procedure for electrically connecting the internal wiring of the rotating electric machine 3 and the external power source in the first embodiment will be described. First, a terminal fixing nut 8 is attached to each of the terminals 6 inserted into the plurality of terminal through holes 5 of the first insulating plate 4a from the surface 21a of the first insulating plate 4a on the rotating electric machine 3 side. Installing. Next, the collar 7 and the bus bar 20 are sequentially passed through each terminal 6 from the surface 22 side of the first insulating plate 4a on the external power supply side. Next, a terminal fixing nut 8 is attached to each terminal 6 from the external power supply side surface 22 side of the first insulating plate 4a, and the terminal fixing nut 8 is tightened with a jig such as a spanner to fix the terminal. . Thereafter, the tip of the wiring of an external power source that supplies power to the rotating electrical machine 3 and the tip of the internal wiring of the rotating electrical machine 3 are attached to each crimp terminal 25 attached to both ends of the bus bar 20, respectively. As a result, the external power source, the crimp terminal 25, the bus bar 20, the terminal 6, and the rotating electrical machine 3 are electrically connected, and power is supplied to the rotating electrical machine 3 from the external power source. In addition, when the crimp terminal 25 is inserted between the collar 7 and the bus bar 20, the crimp terminal 25 is passed through each terminal 6 after the collar 7, and when the crimp terminal 25 is inserted between the bus bar 20 and the terminal fixing nut 8. In this case, the crimp terminal 25 may be passed through each terminal 6 after the bus bar 20.

Next, the insulation distance will be explained. Insulation distance is the shortest distance from one conductive part to another that can cause a short circuit. There are two types of insulation distances: spatial distance and creepage distance. The spatial distance is the shortest spatial distance between two conductive parts, and the creepage distance is the shortest distance along the outline of the insulator provided between the two conductive parts.

FIG. 5 is a diagram illustrating the spatial distance between the conductive parts 30. FIG. 5(a) shows the case where a flat insulating plate 31 is used, and FIG. c) shows a case where an insulating plate 33 in which a recess is provided between the conductive parts 30 is used. In FIGS. 5(a) to 5(c), the length of the portion indicated by the broken line indicates the spatial distance between the conductive parts 30.

As shown in FIG. 5A, when a flat insulating plate 31 is used, the spatial distance between the conductive parts 30 is the length along the surface of the insulating plate 31. As shown in FIG. 5(b), when using an insulating plate 32 provided with a convex part, the spatial distance between the conductive parts 30 is the same as that between the tip of one conductive part 30 and the tip of the convex part of the insulating plate 32. , the length of the upper surface of the convex portion of the insulating plate 32 , and the shortest distance between the tip of the convex portion of the insulating plate 32 and the tip of the other conductive portion 30 . In this case, the spatial distance between the conductive parts 30 becomes longer than in the case of using the flat insulating plate 31 shown in FIG. 5(a). As shown in FIG. 5C, when an insulating plate 33 provided with a recessed portion is used, the spatial distance between the conductive parts 30 is the shortest distance between two conductive parts 30. In this case, the spatial distance between the conductive parts 30 is the same as in the case of using the flat insulating plate 31 shown in FIG. 5(a). Therefore, as shown in FIG. 5(b), when using an insulating plate 32 in which a convex part higher than the height of the conductive parts 30 is provided between the conductive parts 30, compared to using a flat insulating plate 31, , the spatial distance between the conductive parts 30 becomes longer. On the other hand, when using an insulating plate 33 in which a recess is provided between the conductive parts 30 as shown in FIG. 5(c), the spatial distance between the conductive parts 30 is the same length as when using a flat insulating plate 31. become.

FIG. 6 is a diagram illustrating the creepage distance between the conductive parts 30. 6(a) shows a case where a flat insulating plate 31 is used, FIG. 6(b) shows a case where an insulating plate 32 with a protrusion is provided between the conductive parts 30, and FIG. 6(c) shows a case where a flat insulating plate 31 is used. A case is shown in which an insulating plate 33 provided with a recessed portion is used. In FIGS. 6A to 6C, the length of the portion indicated by the broken line indicates the creepage distance between the conductive parts 30.

As shown in FIG. 6A, when a flat insulating plate 31 is used, the creepage distance between the conductive parts 30 is the length along the surface of the insulating plate 31. As shown in FIG. 6B, when an insulating plate 32 provided with a convex portion is used, the creepage distance between the conductive parts 30 is a distance along the outer shape of the surface of the insulating plate 32 including the convex portion. In this case, the creepage distance between the conductive parts 30 becomes longer than in the case of using the flat insulating plate 31 shown in FIG. 6(a). As shown in FIG. 6C, when an insulating plate 33 provided with a recess is used, the creepage distance between the conductive parts 30 is a length along the outer shape of the surface of the insulating plate 33 including the recess. In this case, the creepage distance between the conductive parts 30 becomes longer than in the case of using the flat insulating plate 31 shown in FIG. 6(a). Therefore, as shown in FIG. 6(b) and FIG. 6(c), when using an insulating plate 32 in which a convex part is provided between the conductive parts 30, and in a case where an insulating plate 32 is used in which a concave part is provided between the conductive parts 30, 33, the creepage distance between the conductive parts 30 becomes longer than when using a flat insulating plate 31.

As described above, compared to the case where a flat insulating plate 31 is used, when the insulating plate 32 in which a convex part higher than the height of the conductive part 30 is provided between the conductive parts 30 is used, the distance between the conductive parts 30 is Both the spatial distance and the creepage distance become long, and when an insulating plate 33 in which a recess is provided between the conductive parts 30 is used, it can be said that the creepage distance between the conductive parts 30 becomes long. If the insulation distance between the conductive parts 30, that is, the spatial distance and/or creepage distance becomes longer by providing a protrusion or a recess between the conductive parts 30, short circuits will not occur even if the shortest distance between the conductive parts 30 is shortened accordingly. It can be prevented. Therefore, by providing a convex portion or a concave portion between the conductive portions 30, it is possible to downsize while ensuring an insulation distance.

Therefore, in the terminal block 1a in which the terminal 6 is inserted into the terminal through-hole 5 of the first insulating plate 4a, the first through-hole 100 and the second through-hole By providing a recess 23 between the through hole 101 and a recess 24 between the first through hole 100 and the second through hole 101 on the external power supply side surface 22 of the first insulating plate 4a, The creepage distance between the terminal 6 inserted into the first through hole 100 and the terminal 6 inserted into the second through hole 101 can be increased.

In addition, when the collar 7 is formed of a conductive material, similarly, the collar 7 attached to the terminal 6 inserted into the first through hole 100 and the terminal 6 inserted into the second through hole 101 are connected to each other. The creepage distance between the attached collar 7 can also be increased.

In addition, when the terminal fixing nut 8 is formed of a conductive material, similarly, the terminal fixing nut 8 attached to the terminal 6 inserted into the first through hole 100 and the second through hole 101 are connected to each other. The creeping distance between the inserted terminal 6 and the terminal fixing nut 8 attached thereto can also be increased.

By providing the recesses 23 and 24, the creepage distance between the terminals 6, between the collars 7, and between the terminal fixing nuts 8 becomes longer, so the shortest distance between the terminals 6, between the collars 7, and between the terminal fixing nuts 8 is Short circuits can be prevented even if the length is shortened. In other words, the distance between the first through hole 100 and the second through hole 101 of the first insulating plate 4a can be shortened, and the terminal block 1a can be downsized.

Here, a convex portion is formed between the first through hole 100 and the second through hole 101 on the surface 21a of the first insulating plate 4a on the rotating electrical machine 3 side or on the surface 22 of the first insulating plate 4a on the external power source side. By providing a portion, not only the creepage distance but also the spatial distance between the terminal 6 inserted into the first through hole 100 and the terminal 6 inserted into the second through hole 101 can be increased. However, as mentioned above, in order to increase the spatial distance, it is necessary to design the height of the convex part to be higher than the height of the conductive part, that is, the height of the terminal 6, and this reduces the size of the terminal block 1a in the longitudinal direction of the terminal 6. This becomes difficult. On the other hand, when providing the recesses 23 and 24 in the first insulating plate 4a, the provision of the recesses 23 and 24 may impede miniaturization of the terminal block 1a in the longitudinal direction of the terminals 6. There isn't.

As described above, the terminal block 1a in the first embodiment has a first surface 21a of the first insulating plate 4a on the rotating electrical machine 3 side, and a second surface 21a facing the rotating electrical machine 3 side. a surface 22 on the external power source side which is a surface, and terminal through holes 5 which are first plurality of through holes penetrating from the surface 21a on the rotating electric machine 3 side to the surface 22 on the external power source side; Each of the terminal through-holes 5 includes a first insulating plate 4a into which a terminal 6 can be inserted, and the terminal through-holes 5 include a first through-hole 100 and terminal through-holes other than the first through-hole 100. The first insulating plate 4a includes a second through hole 101 that is closest to the first through hole 100 among the holes 5, and the first insulating plate 4a has a first through hole 100 and a second through hole 101 on the surface 21a on the rotating electric machine 3 side. A recess 23, which is a first recess, is provided between the first through hole 101 and the second through hole 101, and a second recess is provided between the first through hole 100 and the second through hole 101 on the external power supply side surface 22. By having a certain recess 24, it is possible to downsize the terminal block 1a while ensuring the insulation distance between the terminals 6.

Moreover, by providing the rotating electrical machine 3 and the terminal block 1a electrically connected to the rotating electrical machine 3, it is possible to obtain an elevator apparatus in which the terminal block 1a is miniaturized while ensuring the insulation distance between the terminals 6.

In the first embodiment, the recess 23 is provided in the surface 21a of the first insulating plate 4a facing the rotating electrical machine 3, and the recess 24 is provided in the surface 22 facing the external power source. The recess 23 may be provided only on the surface 21a on the electric machine 3 side and the recess 24 may not be provided on the surface 22 on the external power supply side, or conversely, the recess 23 may be provided on the surface 21a on the rotating electric machine 3 side of the first insulating plate 4a. Instead of providing the recess 23, the recess 24 may be provided only on the surface 22 facing the external power source. Even in these cases, the terminal block 1a can be downsized while ensuring the insulation distance between the terminals 6.

In the first embodiment, the recesses 23 and 24 are formed to form a linear groove between the first through hole 100 and the second through hole 101 of the first insulating plate 4a. However, the shapes of the recesses 23 and 24 are not limited to linear grooves. For example, the recesses 23 and 24 may have a round shape or a polygonal shape when viewed from above from the rotating electric machine 3 side or from the external power source side.

Furthermore, in the first embodiment, one recess 23 is provided between the first through hole 100 and the second through hole 101 on the surface 21a of the first insulating plate 4a on the side of the rotating electric machine 3, and the one recess 23 is provided on the side of the external power source. Although one recess 24 was provided between the first through hole 100 and the second through hole 101 on the surface 22, the first through hole 100 on the surface 21a on the rotating electric machine 3 side of the first insulating plate 4a Two or more recesses 23 may be provided between the first through hole 100 and the second through hole 101 on the surface 22 on the external power supply side. The above recess 24 may be provided.

In addition, in Embodiment 1, an example was explained in which the terminal block 1a is used to supply power to the rotating electric machine 3 of an elevator, but the terminal block 1a is used not only for the rotating electric machine 3 of the elevator but also for other electrical equipment. The terminal block 1a may be used to supply power to the rotating electric machine. Furthermore, the terminal block 1a can also be used to electrically connect devices for purposes other than power supply. For example, the terminal block 1a may be used as a relay for electrically connecting an electromagnetic relay, PLC, inverter, etc. inside a control panel of an electrical device, or as a relay provided outside a control panel of an electrical device. May be used as a repeater inside the box.

Embodiment 2.
The configuration of the terminal block 1b in the second embodiment will be explained. FIG. 7 is a diagram showing the first insulating plate 4b in the second embodiment. FIG. 7(a) is a diagram seen from the rotating electric machine 3 side, and FIG. 7(b) is a diagram seen from the external power supply side. The first insulating plate 4b in the second embodiment is different from the first insulating plate in the first embodiment in that the first insulating plate 4b has a notch 40, which is a recess for a fixing member, on the first surface 21b on the rotating electric machine 3 side. Different from 4a. Note that the same components as those in Embodiment 1 are given the same reference numerals, and their descriptions will be omitted. In the second embodiment, it is assumed that the terminal fixing nut 8 is made of a conductive material.

As shown in FIG. 7(a), the notch 40 is a through-hole for a terminal in the surface 21b of the first insulating plate 4b on the rotating electrical machine 3 side, when the surface 21b on the rotating electrical machine 3 side is viewed from above. 5, respectively. In the following description, among the plurality of notches 40, the notch 40 that includes the first through hole 100 therein when the surface 21b on the rotating electric machine 3 side is viewed in plan will be described. Therefore, in the following, simply writing "notch 40" without special explanation will mean the notch 40 that includes the first through hole 100 inside when the surface 21b on the rotating electrical machine 3 side is viewed from above. It shall point to

The notch 40 is formed in the side wall portion closest to the second through hole 101 in a cross section parallel to the surface 21b on the side of the rotating electric machine 3, so that the center of the first through hole 100 and the center of the second through hole 101 are connected to each other. It has a first straight portion 41 perpendicular to the connecting straight line. Further, a second straight portion 42 parallel to the first straight portion 41 is provided on a side wall portion opposite to the side wall portion closest to the second through hole 101 . Although two second through holes 101 are shown in FIG. 7(a), the first through hole 100 and the second through hole 101 located above the first through hole 100 The first straight section 41 and the second straight section 42 are illustrated with attention to their positional relationship. When focusing on the positional relationship between the first through hole 100 and the second through hole 101 located below the first through hole 100, the side wall of the notch 40 shown in FIG. A first straight portion 41 is provided on the lower side wall in FIG. 7, and a second straight portion 42 is provided on the upper side wall in FIG. Note that "perpendicular" and "parallel" herein include not only perpendicular and parallel in the strict sense, but also those that can be said to be substantially perpendicular or parallel even if there is some deviation.

Next, the positional relationship between the notch 40 of the first insulating plate 4b and the terminal fixing nut 8 in the second embodiment will be described in detail. FIG. 8 is a diagram showing a state in which the terminal block 1b according to the second embodiment is taken out from the terminal box 2. FIG. 8(a) is a diagram seen from the rotating electric machine 3 side, and FIG. 8(b) is a diagram seen from the external power supply side. FIG. 9 is a diagram showing the positional relationship between the notch 40 of the first insulating plate 4b and the terminal fixing nut 8 in the second embodiment. 9(a) shows a case where the outer shape of the terminal fixing nut 8 is a regular hexagon, FIG. 9(b) shows a case where the outer shape of the terminal fixing nut 8 is a hexagon, and FIG. 9(c) shows a case where the terminal fixing nut 8 has a hexagonal outer shape. FIG. 8 is a diagram showing a case where the outer shape of 8 is a pentagon.

The terminal fixing nut 8 used in the second embodiment has a straight portion 43 in a part of its outer shape in a cross section parallel to the rotating electric machine 3 side surface 21b of the first insulating plate 4b. For example, as shown in FIGS. 9(a) to 9(c), when the outer shape of the terminal fixing nut 8 is a polygon, one side of this polygon is the straight portion 43. Further, the terminal fixing nut 8 has a through hole 102, and by inserting the terminal 6 into the through hole 102 and tightening the terminal fixing nut 8, the terminal 6 and the first insulating plate 4b can be fixed. I can do it. As the terminal fixing nut 8, it is more preferable to use a hexagonal nut having a regular hexagonal outer shape as shown in FIG. 9(a). Here, "polygon" and "regular hexagon" do not only mean polygons or regular hexagons in the strict sense, but also, for example, even if the apex part is chamfered or slightly distorted, It also includes polygons and regular hexagons.

When fixing the terminal 6 inserted into the first through hole 100 and the first insulating plate 4b with the terminal fixing nut 8, the straight part 43 of the terminal fixing nut 8 is notched. It is arranged in the notch 40 so as to be in contact with the first straight portion 41 of the cutout 40 . By arranging the terminal fixing nut 8 in the notch 40 so that the straight part 43 of the terminal fixing nut 8 and the first straight part 41 of the notch 40 are in contact with each other, the terminal fixing nut 8 is cut. Rotation within the notch 40 can be prevented. For example, as shown in FIGS. 9(a) to 9(c), when the outer shape of the terminal fixing nut 8 is polygonal, if the terminal fixing nut 8 is rotatable without restriction, the first through-hole The apex portion of the outer shape of the terminal fixing nut 8 attached to the terminal 6 inserted into the hole 100 may face toward the terminal 6 inserted into the second through hole 101. In this case, compared to the case where the straight portion 43 of the terminal fixing nut 8 attached to the terminal 6 inserted into the first through hole 100 faces the terminal 6 inserted into the second through hole 101, The shortest distance between the terminal fixing nut 8 attached to the terminal 6 inserted into the first through hole 100 and the terminal 6 inserted into the second through hole 101, or the shortest distance between the terminal 6 inserted into the first through hole 100 The shortest distance between the terminal fixing nut 8 attached to the terminal 6 and the terminal fixing nut 8 attached to the terminal 6 inserted into the second through hole 101 becomes short, making it difficult to secure an insulation distance. Therefore, the terminal fixing nut 8 is arranged in the notch 40 so that the straight part 43 of the terminal fixing nut 8 and the first straight part 41 of the notch 40 are in contact with each other, and the terminal fixing nut 8 is notched. By preventing rotation within the notch 40, an insulation distance can be ensured. Note that the entire surface of the straight portion 43 of the terminal fixing nut 8 does not necessarily have to be in contact with the first straight portion 41 of the notch 40, and at least a portion of the straight portion 43 of the terminal fixing nut 8 is notched. It is sufficient if the first straight portion 41 of 40 is contacted.

Next, the distance between the first straight part 41 and the second straight part 42 of the notch 40 will be explained. The distance between the first straight part 41 and the second straight part 42 is determined when the terminal 6 is inserted into the first through hole 100 and the terminal fixing nut 8 is attached to the terminal 6. The nut 8 is designed to prevent rotation within the notch 40.

More specifically, as shown in FIGS. 9(a) to 9(c), in a cross section parallel to the surface 21b of the first insulating plate 4b on the rotating electric machine 3 side, the through hole 102 of the terminal fixing nut 8 is The following description assumes that the center is located midway between the first straight section 41 and the second straight section 42. In FIGS. 9(a) to 9(c), the length of the longest line connecting the center of the through hole 102 of the terminal fixing nut 8 and a point on the outer periphery of the terminal fixing nut 8 is twice the length of the longest line segment. The line segment having the terminal fixing nut 8 is defined as a line segment A, and the longest line segment connecting two points on the outer periphery of the terminal fixing nut 8 where a straight line perpendicular to the straight line part 43 of the terminal fixing nut 8 intersects is defined as a line segment B. .

When the distance between the first straight part 41 and the second straight part 42 is longer than the length of the line segment A, the terminal fixing nut 8 is attached to the first straight part 41 and the second straight part 42. Since the terminal fixing nut 8 does not come into contact with the terminal fixing nut 8, there is a possibility that the terminal fixing nut 8 may rotate without restriction. On the other hand, if the distance between the first straight part 41 and the second straight part 42 is smaller than the length of the line segment B, the straight part 43 of the terminal fixing nut 8 is aligned with the first straight line of the notch 40. The terminal fixing nut 8 cannot be placed inside the notch 40 while being in contact with the portion 41 . Therefore, the distance between the first straight part 41 and the second straight part 42 is smaller than the length of the line segment A, that is, the distance between the center of the through hole 102 of the terminal fixing nut 8 and the terminal fixing nut 8 is smaller than the length of the line segment A. The length of the line segment is designed to be less than twice the length of the longest line segment connecting points on the outer periphery of the line segment. As a result, the terminal fixing nut 8 interferes with the first linear portion 41 or the second linear portion 42 within the notch 40, so that it is possible to prevent the terminal fixing nut 8 from rotating within the notch 40. can. Further, the distance between the first straight part 41 and the second straight part 42 is longer than the length of the line segment B, that is, the distance between the first straight part 41 and the second straight part 42 is longer than the length of the line segment B, that is, the distance between the first straight part 41 and the second straight part 42 is longer than the length of the straight part 43 of the terminal fixing nut 8. The length is designed to be longer than the longest line segment connecting two points on the outer circumference of the nut 8. Thereby, the terminal fixing nut 8 can be placed in the notch 40 with the straight part 43 of the terminal fixing nut 8 in contact with the first straight part 41 of the notch 40.

As described above, the first insulating plate 4b is a fixing member recess that includes the first through hole 100 therein when the first surface 21b on the side of the rotating electric machine 3 is viewed from above. The notch 40 has a first through hole in the side wall portion closest to the second through hole 101 in a cross section parallel to the surface 21b of the first insulating plate 4b on the rotating electric machine 3 side. 100 and the center of the second through hole 101, is formed of a conductive material, and has a surface 21b on the rotating electric machine 3 side of the first insulating plate 4b. A terminal fixing nut 8, which is a fixing member that has a linear portion 43 in a part of its outer shape in a cross section parallel to the above, and fixes the terminal 6 inserted into the first through hole 100 and the first insulating plate 4b. By making it possible to arrange the terminal fixing nut 8 in the notch 40 so that the first straight part 41 of the notch 40 and the straight part 43 of the terminal fixing nut 8 are in contact with each other, the terminal fixing nut 8 rotates within the notch 40. can be prevented from happening. Thereby, the insulation distance between the terminal fixing nut 8 attached to the terminal 6 inserted into the first through hole 100 and the terminal 6 inserted into the second through hole 101, or the It is possible to ensure an insulation distance between the terminal fixing nut 8 attached to the terminal 6 inserted into the hole 100 and the terminal fixing nut 8 attached to the terminal 6 inserted into the second through hole 101. Therefore, the terminal block 1b can be downsized.

In addition, the notch 40 has a first linear portion in a side wall portion opposite to the side wall portion closest to the second through hole 101 in a cross section parallel to the surface 21b of the first insulating plate 4b on the rotating electric machine 3 side. 41, the terminal fixing nut 8 has a through hole 102 into which the terminal 6 can be inserted, and the terminal fixing nut 8 has a through hole 102 in which the terminal 6 can be inserted. The distance is a line segment connecting the center of the through hole 102 of the terminal fixing nut 8 and a point on the outer periphery of the terminal fixing nut 8 in a cross section parallel to the surface 21b of the first insulating plate 4b on the rotating electrical machine 3 side. The length of the longest line segment is smaller than twice the length of the longest line segment, and the longest line segment connects two points on the outer periphery of the terminal fixing nut 8 where the straight line perpendicular to the straight line part 43 of the terminal fixing nut 8 intersects. By being longer than the length of the line segment, it is possible to prevent the terminal fixing nut 8 from rotating within the notch 40. Thereby, the insulation distance between the terminal fixing nut 8 attached to the terminal 6 inserted into the first through hole 100 and the terminal 6 inserted into the second through hole 101, or the It is possible to ensure an insulation distance between the terminal fixing nut 8 attached to the terminal 6 inserted into the hole 100 and the terminal fixing nut 8 attached to the terminal 6 inserted into the second through hole 101. Therefore, the terminal block 1b can be downsized.

Note that in the second embodiment, the first linear portion 41 of the notch 40 is located between the center of the first through hole 100 and the center of the second through hole 101 in a cross section parallel to the surface 21b on the rotating electrical machine 3 side. However, the first straight portion 41 is not perpendicular to the straight line connecting the center of the first through hole 100 and the center of the second through hole 101. Good too. For example, when using a hexagonal nut with a regular hexagonal outer shape as the terminal fixing nut 8, the first straight portion 41 of the notch 40 is aligned with the center of the first through hole 100 and the center of the second through hole 101. It can be provided so that the angle formed with a straight line connecting the two is greater than 60 degrees and less than 90 degrees. As a result, compared to the case where the apex part of the outer shape of the terminal fixing nut 8 attached to the terminal 6 inserted into the first through hole 100 faces the side of the terminal 6 inserted into the second through hole 101, , the insulation distance between the terminal fixing nut 8 attached to the terminal 6 inserted into the first through hole 100 and the terminal 6 inserted into the second through hole 101, or the first through hole 100 An insulation distance can be secured between the terminal fixing nut 8 attached to the terminal 6 inserted into the second through hole 101 and the terminal fixing nut 8 attached to the terminal 6 inserted into the second through hole 101. The terminal block 1b can be downsized. Note that the term "angle formed" herein refers to the smaller angle of the angles formed by two straight lines.

In the second embodiment, as shown in FIGS. 7(a), 8(a), and 9, the cutout 40 is a cross section parallel to the surface 21b of the first insulating plate 4b on the rotating electrical machine 3 side. In , a groove having a shape having a first straight part 41 , a second straight part 42 , and a curved part connecting the first straight part 41 and the second straight part 42 was provided, but the shape of the notch 40 is not limited to this. For example, a straight part may be provided instead of the curved part connecting the first straight part 41 and the second straight part 42. Further, a curved portion may be provided instead of the second straight portion 42. Further, in the second embodiment, the cutout 40 having a shape without a side wall is provided in the right side portion in FIG. 9, but the cutout 40 in a shape having a side wall may also be provided in the right side portion in FIG. . In this case, the shape of the side wall of the right side portion may be linear or curved.

Embodiment 3.
The configuration of the terminal block 1c in Embodiment 3 will be explained. FIG. 10 is a side sectional view of the terminal block 1c in the third embodiment. FIG. 11 is a diagram showing the second insulating plate 50 in the third embodiment. FIG. 11(a) is a diagram seen from the rotating electrical machine 3 side, and FIG. 11(b) is a diagram seen from the external power supply side. The terminal block 1c in the third embodiment differs from the terminal block 1b in the second embodiment in that it includes a second insulating plate 50 in addition to the first insulating plate 4b. Note that the same components as those in the second embodiment are given the same reference numerals, and their explanations will be omitted. In the third embodiment, it is assumed that the terminal fixing nut 8 is made of a conductive material.

In FIG. 10, the second insulating plate 50 is arranged so that it contacts the surface 21b of the first insulating plate 4b on the rotating electric machine 3 side, and the convex part 53 fits into the concave part 23 of the first insulating plate 4b. be done. Moreover, each terminal 6 is inserted into the terminal through-hole 5 of the first insulating plate 4b and the terminal through-hole 54 of the second insulating plate 50. Further, each stud bolt 10 is inserted into a stud bolt through hole 9 of the first insulating plate 4b and a stud bolt through hole 55 of the second insulating plate 50. By attaching the stud bolt fixing nuts 11 to the rotating electric machine 3 side and the external power supply side of each stud bolt 10 with the first insulating plate 4b and the second insulating plate 50 in between, the stud bolts 10 and the first Insulating plate 4b and second insulating plate 50 are fixed.

In FIG. 11, the second insulating plate 50 faces an external power source side surface 51, which is a contact surface that contacts the rotating electric machine 3 side surface 21b of the first insulating plate 4b, and an external power source side surface 51. A plurality of terminal through-holes 54 are second plurality of through-holes that penetrate from the surface 51 on the external power supply side to the surface 52 on the rotary electric machine 3 side, and have a surface 52 on the rotating electrical machine 3 side that is an opposing surface. and a plurality of through holes 55 for stud bolts. Further, the second insulating plate 50 has a convex portion 53 on the surface 51 facing the external power source. The second insulating plate 50 is made of an insulator.

A terminal 6 can be inserted into each terminal through hole 54, and a stud bolt 10 can be inserted into each stud bolt through hole 55. Further, the plurality of terminal through holes 54 include a third through hole 103 provided at a position corresponding to the first through hole 100 of the first insulating plate 4b, and a second through hole 103 of the first insulating plate 4b. A fourth through hole 104 provided at a position corresponding to the through hole 101 is included. In other words, among the terminal through holes 54 other than the third through hole 103 , the terminal through hole 54 closest to the third through hole 103 is the fourth through hole 104 . Further, the shape of each terminal through hole 54 in a cross section parallel to the surface 51 on the external power supply side is such that the terminal 6 and the first insulating plate 4b are fixed by the terminal fixing nut 8, and the terminal 6 is fixed to the terminal through hole 54. 54, a space is formed between the terminal fixing nut 8 and each side wall of the terminal through hole 54. In other words, the terminal through hole 54 has a shape and size such that the terminal fixing nut 8 and the side wall of the terminal through hole 54 do not come into contact with each other.

The convex portion 53 is formed between the third through hole 103 and the fourth through hole 104 on the external power supply side surface 51 of the second insulating plate 50 . The convex portion 53 is formed to form a linear protrusion between the third through hole 103 and the fourth through hole 104, for example, as shown in FIG. 11(b). Further, the convex portion 53 is formed so as to be able to fit into the concave portion 23 on the surface 21b of the first insulating plate 4b on the rotating electric machine 3 side.

Next, the spatial distance between the terminal fixing nuts 8 in Embodiment 3 will be explained. FIG. 12 is a diagram illustrating the spatial distance between the terminal fixing nuts 8 in the third embodiment. FIG. 12(a) shows the spatial distance between the terminal fixing nuts 8 in the second embodiment as a comparative example, and FIG. 12(b) shows the spatial distance between the terminal fixing nuts 8 in the third embodiment. In addition, the length of the part shown by the broken line in FIG. 12 shows the spatial distance between the terminal fixing nuts 8.

As shown in FIG. 12(a), in the second embodiment, only the first insulating plate 4b is used without using the second insulating plate 50, and the terminal fixing nut 8 is attached to the first insulating plate 4b. A portion is exposed to the rotating electric machine 3 side from the notch 40 of 4b. Therefore, the spatial distance between the terminal fixing nuts 8 is the shortest distance between one terminal fixing nut 8 and the other terminal fixing nut 8.

On the other hand, as shown in FIG. 12(b), in the third embodiment, a first insulating plate 4b and a second insulating plate 50 are used. A part of the terminal fixing nut 8 is exposed to the rotating electric machine 3 side through the notch 40 of the first insulating plate 4b, but the part exposed from the notch 40 is exposed to the side of the second insulating plate 50. It is located within the terminal through-hole 54 and is surrounded by the side wall of the terminal through-hole 54 . Therefore, the spatial distance between the terminal fixing nuts 8 is the shortest distance between one terminal fixing nut 8 and the end of the side wall of the terminal through hole 54 of the second insulating plate 50 on the side of the rotating electrical machine 3; The length between the two terminal through holes 54 on the surface 52 of the second insulating plate 50 on the rotating electric machine 3 side, and the length between the end of the side wall of the terminal through hole 54 on the rotating electric machine 3 side of the second insulating plate 50 and the other side. The length is the sum of the shortest distance to the terminal fixing nut 8. In this case, the spatial distance between the terminal fixing nuts 8 becomes longer than in the case shown in FIG. 12(a).

As described above, the terminal block 1c in the third embodiment has a surface 51 on the external power supply side, which is a contact surface that contacts the surface 21b on the rotating electrical machine 3 side of the first insulating plate 4b, which is the first surface, and A second plurality of through holes having a surface 51 on the external power source side and a surface 52 on the rotating electric machine 3 side which is an opposing surface, and penetrating from the surface 51 on the external power source side to the surface 52 on the rotating electric machine 3 side. A second insulating plate 50 is provided which has terminal through holes 54 and into which terminals 6 can be inserted. In addition, the second insulating plate 50 has a convex portion 53 on the surface 51 on the external power supply side that engages with the concave portion 23 of the first insulating plate 4b, thereby providing a second insulating plate with respect to the first insulating plate 4b. Positioning of the plate 50 becomes easy. Furthermore, it is also possible to prevent the second insulating plate 50 from being misaligned with respect to the first insulating plate 4b.

Further, in the terminal block 1c in the third embodiment, the shape of each terminal through hole 54 in a cross section parallel to the surface 51 on the external power supply side of the second insulating plate 50 is formed by a fixing member made of a conductive material. In a state where the terminal 6 and the first insulating plate 4b are fixed by the terminal fixing nut 8 and the terminal 6 is inserted into the terminal through hole 54, each of the terminal fixing nut 8 and the terminal through hole 54 is It is formed so as to have a space between it and the side wall. As a result, the distance between the terminal fixing nut 8 attached to the terminal 6 inserted into the first through hole 100 and the terminal fixing nut 8 attached to the terminal 6 inserted into the second through hole 101 is reduced. The insulation distance, especially the spatial distance, can be ensured, and the terminal block 1c can be downsized.

In the third embodiment, the convex portion 53 is formed to form a linear protrusion between the third through hole 103 and the fourth through hole 104, but the convex portion 53 has a linear shape. It is not limited to shaped protrusions. For example, the convex portion 53 may have a round or polygonal shape when viewed from the external power source side.

Furthermore, in the third embodiment, one convex portion 53 is provided between the third through hole 103 and the fourth through hole 104 on the external power supply side surface 51 of the second insulating plate 50. Two or more convex portions 53 may be provided between the third through hole 103 and the fourth through hole 104 on the external power supply side surface 51 of the second insulating plate 50.

In addition, in the third embodiment, as shown in FIG. 11, the terminal through hole 54 is formed to have a circular shape in plan view, but the shape of the terminal through hole 54 is such that the terminal 6 is connected to the terminal 6 by the terminal fixing nut 8. In a state where the first insulating plate 4b is fixed and the terminal 6 is inserted into the terminal through hole 54, the terminal is shaped such that there is a space between the terminal fixing nut 8 and the side wall of the terminal through hole 54. Any shape may be used, for example, it may be rectangular or elliptical in plan view.

Note that in the third embodiment, the first insulating plate 4b is used for the terminal block 1c, but the first insulating plate 4a shown in the first embodiment may also be used.

Hereinafter, various aspects of the present disclosure will be collectively described as supplementary notes.
(Additional note 1)
a first surface; a second surface opposite to the first surface; a first plurality of through holes penetrating from the first surface to the second surface; comprising a first insulating plate into which a terminal can be inserted into each of the first plurality of through holes;
The first plurality of through holes include a first through hole and a second through hole that is closest to the first through hole among the first plurality of through holes other than the first through hole. , including;
The first insulating plate has a first recess between the first through hole and the second through hole on the first surface. Terminal block.
(Additional note 2)
a contact surface that contacts the first surface; and an opposing surface that faces the contact surface; a second plurality of through holes that penetrate from the contact surface to the opposing surface; a second insulating plate into which the terminal can be inserted into each of the plurality of through holes;
The terminal block according to supplementary note 1, wherein the second insulating plate has a convex portion on the contact surface that engages with the first concave portion of the first insulating plate.
(Additional note 3)
The shape of each of the second plurality of through holes in a cross section parallel to the contact surface is
In a state where the terminal and the first insulating plate are fixed by a fixing member made of a conductive material, and the terminal is inserted into the second plurality of through holes,
The terminal block according to appendix 2, wherein the terminal block is formed to have a space between the fixing member and the side wall of each of the second plurality of through holes.
(Additional note 4)
The first insulating plate is
The first surface has a fixing member recess that includes the first through hole therein when the first surface is viewed in a plan view;
The fixing member recess has a center of the first through hole and a center of the second through hole in a side wall portion closest to the second through hole in a cross section parallel to the first surface. It has a first straight line that is perpendicular to the connecting straight line,
The terminal is made of a conductive material, has a straight portion in a part of its outer shape in a cross section parallel to the first surface, and fixes the terminal inserted into the first through hole and the first insulating plate. According to any one of Supplementary Notes 1 to 3, the fixing member can be arranged in the fixing member recess so that the first straight part of the fixing member recess contacts the straight part of the fixing member. terminal block.
(Appendix 5)
The first insulating plate is
The first surface has a fixing member recess that includes the first through hole therein when the first surface is viewed in a plan view;
The fixing member recess has a center of the first through hole and a center of the second through hole in a side wall portion closest to the second through hole in a cross section parallel to the first surface. It has a first straight part whose angle with the connecting straight line is greater than 60 degrees and less than 90 degrees,
A fixing member that is made of a conductive material, has a regular hexagonal outer shape in a cross section parallel to the first surface, and fixes the terminal inserted into the first through hole and the first insulating plate. , can be arranged in the fixing member recess so that the first linear part of the fixing member recess and the straight part of the fixing member that is one side of the outer shape are in contact with each other. Terminal block described in .
(Appendix 6)
The fixing member recess includes a second linear portion parallel to the first linear portion in a side wall portion opposite to the side wall portion closest to the second through hole in a cross section parallel to the first surface. has
The fixing member has a through hole into which the terminal can be inserted,
The distance between the first straight line part and the second straight line part is
In a cross section parallel to the first surface, the length of the longest line segment connecting the center of the through hole of the fixing member and a point on the outer periphery of the fixing member is smaller than twice the length of the fixing member. The terminal block according to appendix 4 or 5, wherein the terminal block is longer than the longest line segment among the line segments connecting two points on the outer periphery of the fixing member where a straight line perpendicular to the straight line part of the member intersects.
(Appendix 7)
The first insulating plate is
The terminal block according to any one of Supplementary Notes 1 to 6, wherein the second surface has a second recess between the first through hole and the second through hole.
(Appendix 8)
rotating electric machine,
a terminal block electrically connected to the rotating electrical machine;
Equipped with
The terminal block is
a first surface; a second surface opposite to the first surface; a first plurality of through holes penetrating from the first surface to the second surface; comprising a first insulating plate into which a terminal can be inserted into each of the first plurality of through holes;
The first plurality of through holes include a first through hole and a second through hole that is closest to the first through hole among the first plurality of through holes other than the first through hole. , including;
The first insulating plate has a first recess between the first through hole and the second through hole on the first surface. The elevator apparatus.

1a, 1b, 1c Terminal block 2 Terminal box 3 Rotating electric machine 4a, 4b First insulating plate 5 Terminal through hole 6 Terminal 7 Collar 8 Terminal fixing nut 10 Stud bolt 9 Stud bolt through hole 11 Stud bolt fixing nut 20 Busbars 21a, 21b Surface of the first insulating plate on the rotating electrical machine side 22 Surface of the first insulating plate on the external power source side 23 Recessed portion 24 Recessed portion 25 Crimp terminal 30 Conductive portions 31, 32, 33 Insulating plate 40 Notch 41 Notch First linear portion of the notch 42 Second linear portion of the notch 43 Straight portion of the terminal fixing nut 50 Second insulating plate 51 External power supply side surface 52 of the second insulating plate Rotation of the second insulating plate Electrical side surface 53 Convex portion 54 Terminal through hole 55 Stud bolt through hole 100 First through hole 101 Second through hole 102 Terminal fixing nut through hole 103 Third through hole 104 Fourth through hole

Claims (10)

a first surface; a second surface opposite to the first surface; a first plurality of through holes penetrating from the first surface to the second surface; comprising a first insulating plate into which a terminal can be inserted into each of the first plurality of through holes;
The first plurality of through holes include a first through hole and a second through hole that is closest to the first through hole among the first plurality of through holes other than the first through hole. , including;
The first insulating plate has a first recess between the first through hole and the second through hole on the first surface,
a contact surface that contacts the first surface; and an opposing surface that faces the contact surface; a second plurality of through holes that penetrate from the contact surface to the opposing surface; a second insulating plate into which the terminal can be inserted into each of the plurality of through holes;
The terminal and the first insulating plate are fixed by a fixing member made of a conductive material, and when the terminal is inserted into the second plurality of through holes, the first insulating plate in the fixing member When viewed from a direction perpendicular to the opposing surface, the opposing surface of the second insulating plate is larger than the surface that faces the surface that is in contact with the second insulating plate, with respect to the contact surface of the second insulating plate. placed on the second insulating plate side
Terminal block. a contact surface that contacts the first surface; and an opposing surface that faces the contact surface; a second plurality of through holes that penetrate from the contact surface to the opposing surface; a second insulating plate into which the terminal can be inserted into each of the plurality of through holes;
The terminal block according to claim 1, wherein the second insulating plate has a convex portion on the contact surface that engages with the first concave portion of the first insulating plate. The shape of each of the second plurality of through holes in a cross section parallel to the contact surface is
In a state where the terminal and the first insulating plate are fixed by a fixing member made of a conductive material, and the terminal is inserted into the second plurality of through holes,
The terminal block according to claim 2, wherein a space is formed between the fixing member and a side wall of each of the second plurality of through holes. The first insulating plate is
The first surface has a fixing member recess that includes the first through hole therein when the first surface is viewed in a plan view;
The fixing member recess has a center of the first through hole and a center of the second through hole in a side wall portion closest to the second through hole in a cross section parallel to the first surface. It has a first straight line that is perpendicular to the connecting straight line,
The terminal is made of a conductive material, has a straight portion in a part of its outer shape in a cross section parallel to the first surface, and fixes the terminal inserted into the first through hole and the first insulating plate. The fixing member according to any one of claims 1 to 3, wherein the fixing member can be arranged in the fixing member recess so that the first straight part of the fixing member recess contacts the straight part of the fixing member. Terminal block listed. The first insulating plate is
The first surface has a fixing member recess that includes the first through hole therein when the first surface is viewed in a plan view;
The fixing member recess has a center of the first through hole and a center of the second through hole in a side wall portion closest to the second through hole in a cross section parallel to the first surface. It has a first straight part whose angle with the connecting straight line is greater than 60 degrees and less than 90 degrees,
A fixing member that is made of a conductive material, has a regular hexagonal outer shape in a cross section parallel to the first surface, and fixes the terminal inserted into the first through hole and the first insulating plate. , the fixing member can be arranged in the fixing member recess so that the first linear part of the fixing member recess and the straight part of the fixing member that is one side of the outer shape are in contact with each other. Terminal block described in section. The fixing member recess includes a second linear portion parallel to the first linear portion in a side wall portion opposite to the side wall portion closest to the second through hole in a cross section parallel to the first surface. has
The fixing member has a through hole into which the terminal can be inserted,
The distance between the first straight line part and the second straight line part is
In a cross section parallel to the first surface, the length of the longest line segment connecting the center of the through hole of the fixing member and a point on the outer periphery of the fixing member is smaller than twice the length of the fixing member. The terminal block according to claim 4, wherein the length is longer than the longest line segment connecting two points on the outer periphery of the fixing member where a straight line perpendicular to the straight line part of the member intersects. The first insulating plate is
The terminal block according to any one of claims 1 to 3, wherein the second surface has a second recess between the first through hole and the second through hole. rotating electric machine,
a terminal block electrically connected to the rotating electrical machine;
Equipped with
The terminal block is
a first surface; a second surface opposite to the first surface; a first plurality of through holes penetrating from the first surface to the second surface; comprising a first insulating plate into which a terminal can be inserted into each of the first plurality of through holes;
The first plurality of through holes include a first through hole and a second through hole that is closest to the first through hole among the first plurality of through holes other than the first through hole. , including;
The first insulating plate has a first recess between the first through hole and the second through hole on the first surface,
a contact surface that contacts the first surface; and an opposing surface that faces the contact surface; a second plurality of through holes that penetrate from the contact surface to the opposing surface; a second insulating plate into which the terminal can be inserted into each of the plurality of through holes;
The terminal and the first insulating plate are fixed by a fixing member made of a conductive material, and when the terminal is inserted into the second plurality of through holes, the first insulating plate in the fixing member When viewed from a direction perpendicular to the opposing surface, the opposing surface of the second insulating plate is larger than the surface that faces the surface that is in contact with the second insulating plate, with respect to the contact surface of the second insulating plate. placed on the second insulating plate side
elevator equipment. a first surface; a second surface opposite to the first surface; a first plurality of through holes penetrating from the first surface to the second surface; comprising a first insulating plate into which a terminal can be inserted into each of the first plurality of through holes;
The first plurality of through holes include a first through hole and a second through hole that is closest to the first through hole among the first plurality of through holes other than the first through hole. , including;
The first insulating plate has a first recess between the first through hole and the second through hole on the first surface,
a contact surface that contacts the first surface; and an opposing surface that faces the contact surface; a second plurality of through holes that penetrate from the contact surface to the opposing surface; a second insulating plate into which the terminal can be inserted into each of the plurality of through holes;
The second insulating plate has a convex portion on the contact surface that engages with the first concave portion of the first insulating plate.
Terminal block. The shape of each of the second plurality of through holes in a cross section parallel to the contact surface is
In a state where the terminal and the first insulating plate are fixed by a fixing member made of a conductive material, and the terminal is inserted into the second plurality of through holes,
A space is formed between the fixing member and a side wall of each of the second plurality of through holes.
The terminal block according to claim 9.

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