JP2018023240A - Rotary electric machine and rotary electric machine terminal box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a function of a rotary electric machine and a rotary electric machine terminal box which makes it possible to change an orientation of an outlet hole of the terminal box and to change a hole diameter of the terminal box without removing a case of the terminal box of the rotary electric machine from the rotary electric machine.SOLUTION: A terminal box having a connection terminal accommodated therein and having a power supply cable outlet hole is fixed to the rotary electric machine. The terminal box includes: a bottom plate portion fixed to a frame of the rotary electrical machine; a body portion attached to the bottom plate portion; and a cover to be covered from the top of the body portion. The body portion has a plurality of power cable outlet holes having different diameter sizes on the side surface of the same.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a rotating electrical machine and a rotating electrical machine terminal box.

  In general, an electric motor is provided with an electric motor terminal box for connecting a power source side cable and an electric motor side lead wire. The motor terminal box is fixed to the motor body with bolts and screws. Such a configuration of the motor terminal box is disclosed in, for example, Patent Document 1.

JP 2007-14044 A

  In the electric motor disclosed in Patent Document 1, components such as a motor terminal block (connection to the lead wire) are fixed together with the terminal box case. For this reason, to change the lead hole direction of the motor terminal box after the motor is manufactured, it is necessary to remove the lead wire from the terminal block, remove the terminal block, and then remove the terminal box case to change the orientation of the terminal box case There is. In addition, all of the motor terminal box, terminal block, and lead wire must be reattached in the reverse order. The same work is required when changing the hole diameter of the terminal box.

  However, the power cable routing and cable diameter that were originally planned for the motor were determined.For example, the diameter of the terminal hole of the motor terminal box was changed at the timing of the motor installation work, There is a need to change the direction. In order to change the direction of the lead hole, it is generally necessary to remove all the parts attached to the case of the motor terminal box, then change the direction of the case, attach it, and reattach all the attached parts. Further, in order to change the hole diameter of the motor terminal box, it is necessary to prepare a terminal box case with a new hole diameter and replace the case of the motor terminal box in the same manner as described above. Since these operations are very complicated, it is desirable that the specifications can be changed immediately when they are changed during installation.

  The present invention has been made in view of such a situation, and enables changing the direction of the lead hole of the motor terminal box and changing the hole diameter of the motor terminal box without removing the case of the motor terminal box from the motor. The functions of the motor and the motor terminal box are provided.

  In order to solve the above-described problems, the present disclosure provides a rotating electrical machine in which a connection terminal is accommodated and a terminal box having a power cable lead hole is fixed. The terminal box includes a bottom plate portion fixed to the frame of the rotating electrical machine, a trunk portion attached to the bottom plate portion, and a cover that covers the trunk portion. The body portion has a plurality of power cable outlet holes with different diameter sizes on the side surface.

  Further features related to the present invention will become apparent from the description of the present specification and the accompanying drawings. The embodiments of the present invention can be achieved and realized by elements and combinations of various elements and the following detailed description and appended claims.

  The descriptions in this specification are merely exemplary, and are not intended to limit the scope of the claims or the application of the invention in any way.

  According to the present disclosure, the direction of the lead hole of the terminal box can be changed and the hole diameter of the terminal box can be changed without removing the terminal box case from the rotating electrical machine (electric motor).

It is a figure which shows the structure of the common electric motor 1 and the motor terminal box 2. FIG. It is a figure which shows the structure of the terminal box case 3 and the terminal box cover 4 which comprise the electric motor terminal box 2. FIG. It is a figure explaining the composition of electric motor terminal box 10 by the embodiment of this indication. It is a figure which shows the example of a connection structure of the terminal box bottom board part 12 and the terminal box body part 13 by this embodiment. It is a figure which shows a mode that the state which carried out the seal fitting of the terminal box bottom board part 12 and the terminal box trunk | drum 13 of the electric motor terminal box 10 by this embodiment was seen from right above. It is a figure which shows the state which changed the lead hole diameter by changing the terminal box trunk | drum 13 in a 90 degree direction in the state which fixed the terminal box bottom board part 12 of the electric terminal box 10 by this embodiment to the electric motor 1. FIG. It is a figure which shows a mode that the terminal box cover was attached to the terminal box bottom board part 12 and the terminal box body part 13 of the electric motor terminal box 10 by this embodiment. It is a figure for demonstrating the change of the direction of the extraction hole of the motor terminal box 10 by this embodiment. It is a figure for demonstrating the structure which fastens and fixes the terminal box bottom board part 12, the terminal box body part 13, and the terminal box cover 11 of the motor terminal box 10 by this embodiment. It is a figure which shows the state before fully covering the terminal box cover 11 of the electric terminal box 10 by this embodiment, and the state when fully covering. It is a figure showing the state at the time of shipment of electric motor terminal box 10 by this embodiment.

The following changes are the main changes in the specifications of the lead hole direction and hole diameter of the terminal box of the motor.
(I) The change in the direction of the terminal box lead hole is mainly in the direction of 90 degrees.
(Ii) The terminal box lead-out hole diameter is mainly changed by a specific size.

  In the present disclosure, in order to cope with these two specification changes, the motor terminal box is divided into three members (a bottom plate portion, a body portion, and a cover). Three of the side surfaces (for example, four surfaces) of the terminal box body portion have different hole diameters. One of the remaining surfaces has no hole drilling, and when the motor is shipped, this surface is used as an opening hole surface to prevent intrusion of dust, dirt, etc. into the terminal box until the motor is installed. Is. In addition, when a specification other than the hole diameter dimension of the holed surface is dealt with, it is possible to deal with the addition of a new specification by additionally machining the surface that has not been bored. In addition, a terminal box fixing nut for fastening together with the terminal box bottom plate part and the terminal box cover at one place on each side surface of the terminal box body part is provided (for example, fixed to the inside of the rough surface by welding), The nuts are fastened together with the terminal box bottom plate and the terminal box cover to fix the three members.

  The terminal box bottom plate is attached to the terminal box body by a stamping method (sealing fitting). The terminal box bottom plate portion has one hole on each side surface (for example, four side surfaces) for fastening together with the terminal box cover. In the conventional product, the terminal box cover is fixed at four or two fixed positions of the terminal box. In the present disclosure, one place where the terminal box can be fixed is provided on each of the side surfaces (for example, four side surfaces) of the body portion, and the terminal box cover is fixed by two of them. According to this method, since the terminal box body and the terminal box cover can be changed in any four directions, the terminal box body and the terminal box cover can be replaced without removing the terminal box bottom plate from the motor. This makes it possible to appropriately change the direction and diameter of the lead hole of the motor terminal box.

  Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, functionally identical elements may be denoted by the same numbers. The attached drawings show specific embodiments and implementation examples based on the principle of the present invention, but these are for understanding the present invention and are not intended to limit the present invention. Not used.

  This embodiment has been described in sufficient detail for those skilled in the art to practice the present invention, but other implementations and configurations are possible without departing from the scope and spirit of the technical idea of the present invention. It is necessary to understand that the configuration and structure can be changed and various elements can be replaced. Therefore, the following description should not be interpreted as being limited to this.

<General motor terminal box configuration>
Before explaining the electric motor terminal box of the present disclosure, a configuration of a general electric motor terminal box that has conventionally existed will be described in order to deepen the understanding. FIG. 1 is a diagram showing a configuration of a general motor 1 and a motor terminal box 2. FIG. 1A is a diagram showing an entire appearance of an electric motor to which an electric terminal box is attached. FIG. 1B is a diagram illustrating an external appearance of the motor terminal box 2.

  As shown in FIG. 1A, a motor terminal box 2 is fixed outside the main body of the motor 1. The motor terminal box 2 is provided with a lead hole 5 for inserting a power cable (not shown). After the power cable is inserted into the lead hole 5 (at this time, the terminal box cover 4 is in a removed state), the power cable is connected to the lead wire of the electric motor 1 and power is supplied to the electric motor 1. Further, as shown in FIG. 1B, the terminal box case 3 and the terminal box cover 4 of the general motor terminal box 2 are each provided with four screw holes (see FIG. 2). 3 and the terminal box cover 4 are fastened together at four points by fixing screws.

  FIG. 2 is a diagram showing the configuration of the terminal box case 3 and the terminal box cover 4 that constitute the motor terminal box 2. 2A shows the terminal box cover 4, and FIG. 2B shows the terminal box case 3. The terminal box case 3 is fixed to the main body of the electric motor 1 with fixing screws and bolts, and the terminal box cover 4 is fixed to the terminal box case 3 with fixing screws and bolts. The terminal box case 3 is provided with a lead hole 5 through which a power cable (not shown) is passed in one of four directions. A terminal box cover fixing nut (not shown) is welded to the outlet hole 5 at a fixed position on the inner side of both sides. The terminal box cover 4 is connected to the terminal box case 3 by using this fixing nut. (Fixed together). Further, in the terminal box case 3, the side surface is inclined from the surface provided with the extraction hole 5 toward the surface (surface where the extraction hole 5 is not provided) facing the surface. That is, the height of the surface where the lead hole 5 is not provided is set lower than the height of the surface where the lead hole 5 is provided. By doing in this way, it becomes possible to make it easy to connect the lead wire (not shown) and the power cable (not shown) of the electric motor 1.

  Since the general motor terminal box 2 has the structure as described above, once the motor terminal box (terminal box case 3) 2 is attached to the motor 1, the orientation of the lead hole 5 is changed and the lead hole is provided. In order to change the diameter, it is necessary to replace the terminal box case 3, but in order to replace the terminal box case 3, it is necessary to remove the terminal box case 3 from the electric motor 1 completely once.

<Configuration of the motor terminal box of the present disclosure>
FIG. 3 is a diagram illustrating the configuration of the motor terminal box 10 according to the embodiment of the present disclosure. In the motor terminal box 10 according to the present embodiment, the terminal box case 3 described above has a terminal box bottom plate part 12 and a terminal box body part 13 separately configured. That is, the electric motor terminal box 10 includes a terminal box cover 11, a terminal box bottom plate part 12, and a terminal box body part 13.

  The terminal box bottom plate portion 12 has a structure of only the bottom portion of the terminal box case 3 in the case of the general motor terminal box 2 described above. And the terminal box bottom board part 12 is equipped with the fixing hole for fixing the terminal box cover 11 and the terminal box trunk | drum 13 one by one in four directions. As will be described later, for example, using two fixing holes 14 in the diagonal direction (four fixing holes may be used depending on the overall size of the motor terminal box 10), the terminal box cover 11, the terminal box The body portion 13 and the terminal box bottom plate portion 12 are fastened together with fixing screws and fixing nuts.

  The terminal box body portion 13 is formed of a cylindrical member and has, for example, lead holes (lead hole A_15, lead hole B_16, lead hole C_17) having different diameters on three surfaces. The remaining one surface 18 is a surface that is not drilled. This is so that a new lead hole for a power cable having a diameter that cannot be handled by the three kinds of lead holes can be provided on the remaining surface 18. Further, when shipping the electric motor 1 with the electric motor terminal box 10 attached, the terminal box cover 11 is closed so that the lead holes 15 to 17 are not exposed (at this time, the side opening 20 of the terminal box cover 11 is the remaining surface). This is so that the side surface opening 20 can be closed by the surface 18. In addition, the terminal box body portion 13 includes four fixing holes 19 for fixing the terminal box body portion 13 to the terminal box bottom plate portion 12. When the terminal box body portion 13 is fitted to the terminal box bottom plate portion 12 (indicator fitting as will be described later), the four fixing holes 19 are aligned with the fixing holes 14 of the terminal box bottom plate portion 12. Yes.

  The terminal box cover 11 has the same shape as the terminal box cover 4 described above, and has a side opening 20 for exposing one of the lead hole A_15, the lead hole B_16, and the lead hole C_17 of the terminal box body part 13. Provided on the side. Further, the terminal box cover 11 includes four fixing holes 21 for fixing the terminal box cover 11 to the terminal box bottom plate portion 12 together with the terminal box body portion 13. When the terminal box cover 11 is put on the terminal box body part 13 and the terminal box bottom plate part 12, the four fixing holes 21 correspond to the fixing holes 19 of the terminal box body part 13 and the terminal box bottom plate part 12. It is adapted to align with both of the fixing holes 14.

<Connection between terminal box bottom plate 12 and terminal box bottom plate 12>
FIG. 4 is a diagram illustrating an example of a connection structure between the terminal box bottom plate 12 and the terminal box body 13 according to the present embodiment.

  As shown in FIG. 4, the lower part of the terminal box body 13 has a narrowed shape. Thereby, the terminal box bottom plate part 12 and the terminal box body part 13 are fitted by the stamping method, and are connected by the fixing screw and the fixing nut 22. The fixing nut 22 is welded to the inside of the terminal box body 13 in the same manner as the fixing nut (not shown in FIG. 2) of the terminal box case 3 of the general electric motor terminal box 2. However, the fixing nut 22 is provided on each of four surfaces of the terminal box body portion 13 where the terminal box bottom plate portion 12 and the stamp box are fitted (for example, the fixing nut 22 is provided on the terminal box body portion 13. Welded to the lower part of the side). As described above, screwing is usually performed on two diagonal surfaces (two locations) (when the entire size of the motor terminal box 10 is large, screws are secured at four locations).

  In FIG. 4, when the terminal box body portion 13 is fitted to the terminal box bottom plate portion 12, the surface height of the fitting portion 131 of the terminal box body portion 13 and the surface height of the fitting portion 121 of the terminal box bottom plate portion 12. Are the same. However, the surface height of the fitting portion 131 of the terminal box body portion 13 may be higher than the surface height of the fitting portion 121 of the terminal box bottom plate portion 12. The converse is not preferable because when water accumulates in the connection portion between the terminal box body portion 13 and the terminal box bottom plate portion 12, water may enter the motor terminal box from the connection portion.

<About the tightening position>
FIG. 5 is a view illustrating a state in which the terminal box bottom plate portion 12 and the terminal box body portion 13 of the electric terminal box 10 according to the present embodiment are fitted from the top, as viewed from directly above.

  As shown in FIG. 5, when the terminal box bottom plate portion 12 and the terminal box body portion 13 fitted with the seal are viewed from directly above, both of them are line-symmetric and point-symmetric (for example, square (the corners may be rounded). The terminal box body 13 can be changed in attachment every 90 degrees with the terminal box bottom plate 12 as the center. In addition, when the terminal box cover 11 is covered, the terminal box bottom plate part 12, the terminal box body part 13, and the terminal box cover 11 are located at one place on each side (the number of fixing holes is not one on each side. Can be fastened together with fixing screws and fixing nuts. As described above, it is possible to simplify the operations of attaching the motor terminal box 10, changing the hole diameter, and changing the hole direction by only fastening together at one place on each side. Furthermore, as shown in FIG. 5, for example, the lines that connect the tightening positions of the opposing surfaces are close to a diagonal line and are almost orthogonal to each other. Thus, by setting the co-clamping position almost diagonally, even if it is fastened at only one place on each side, it can be more firmly fixed.

<About changing the lead hole diameter>
FIG. 6 is a diagram illustrating a state in which the terminal box body 13 is replaced in the 90-degree direction with the terminal box bottom plate 12 of the electric terminal box 10 according to the present embodiment fixed to the electric motor 1 and the lead hole diameter is changed. is there. FIG. 6A shows a case where the lead hole C_17 is used as a lead hole for the power cable. FIG. 6B shows a case where the lead hole B_16 is used as a lead hole for the power cable. FIG. 6C shows a case where the lead hole A_15 is used as the lead hole of the power cable. The lead hole A_15 is a medium size lead hole, the lead hole B_16 is a minimum size lead hole, and the lead hole C_17 is a maximum size lead hole.

  As shown in FIG. 6, by changing the terminal box body part 13, the lead hole A, the lead hole B, and the lead hole C can be directed in any four directions, and the connection method of the power cable is fixed. In this case, the size of the lead hole can be changed in accordance with the diameter size of the power cable.

  FIG. 7 is a diagram illustrating a state in which the terminal box cover 11 is attached to the terminal box bottom plate portion 12 and the terminal box body portion 13 of the motor terminal box 10 according to the present embodiment. The terminal box body 13 is rotated by 90 degrees without removing the terminal box bottom plate 12 from the motor 1 by the method described in FIG. It is possible to change to the lead hole A_15, the lead hole B_16, and the lead hole C_17 with respect to the hole direction. FIG. 7A shows an overall view of the motor terminal box 10 when the maximum size lead hole C_17 is used as the lead hole for the power cable. FIG. 7B shows an overall image of the motor terminal box 10 when the medium-sized lead hole A_15 is used as the lead hole for the power cable. FIG. 7C shows an overall image of the motor terminal box 10 in the case where the lead hole B_16 having the minimum size is used as the lead hole for the power cable.

<Changing the orientation of the lead hole>
FIG. 8 is a view for explaining the change of the direction of the lead hole of the electric terminal box 10 according to the present embodiment. In FIG. 8, the lead hole diameter size is constant (for example, lead hole A_15), and only the direction of the lead hole is changed. FIG. 8A is a diagram showing a state when the outlet hole A_15 is directed in the positive direction of the X axis. FIG. 8B is a diagram illustrating a state when the outlet hole A_15 is directed in the negative direction of the Y axis. FIG. 8C is a diagram illustrating a state when the outlet hole A_15 is directed in the negative direction of the X axis.

  The replacement of the terminal box bottom plate portion 12 and the terminal box body portion 13 is as described in FIG. 7, but when changing the direction of the lead hole, the terminal box body portion 13 is also changed to change the direction of the specific lead hole. Change it. In this way, if the terminal box body 13 and the terminal box cover 11 are attached by rotating 90 degrees without removing the terminal box bottom plate 12 from the motor 1, the direction of the lead hole of the terminal box is changed to an arbitrary 90 degree direction. can do.

  The electric motor 1 is not shown up to the internal structure. For example, the electric motor housing, the rotor, the stator, the shaft, the bearings, the end bracket, and the fan (the fan is an indispensable configuration depending on the type of the electric motor. Not).

<Co-tightening structure>
FIG. 9 is a view for explaining a structure in which the terminal box bottom plate 12, the terminal box body 13, and the terminal box cover 11 of the electric terminal box 10 according to the present embodiment are fastened and fixed together. FIG. 9 shows the internal structure when the motor terminal box 10 is viewed from the side. In FIG. 9A, a pair of both the fixing nut 22 and the fixing screw 23 and the fixing nut 22 ′ and the fixing screw 23 ′ appear (since FIG. 9A is not a cross-sectional view), but the fixing nut 22 and the fixing screw 23 are disposed in front of the paper surface, and the fixing nut 22 ′ and the fixing screw 23 ′ are disposed in the back of the paper surface.

  FIG. 10A is a diagram illustrating a state before the terminal box cover 11 of the electric terminal box 10 according to the present embodiment is completely covered. FIG. 10B is a diagram showing a state when the terminal box cover 11 of the motor terminal box 10 according to the present embodiment is completely covered. In FIG. 10A, two portions of the lead hole side that is not used for fixing the terminal box cover 11 and the fixing hole 19 and the fixing nut 22 on the opposite side are open. On the other hand, as shown in FIG. 10B, the terminal box cover 11 is completely covered so that the fixing hole (unused fixing hole) 19 is blocked by the terminal box cover 11, so that the airtightness in the terminal box can be maintained. Thus, the interior of the motor terminal box 10 can be protected from sand, dust, and dust.

  When the terminal box bottom plate part 12, the terminal box body part 13, and the terminal box cover 11 are fastened together, first, the terminal box body part 13 is fitted into the terminal box bottom plate part 12 as shown in FIG. . Next, the terminal box cover 11 is covered from above, and the positions of the fixing holes 21 of the terminal box cover 11 are set to the positions of the fixing holes 14 of the terminal box bottom plate 12 and the fixing holes 19 of the terminal box body 13. Match. The fixing screw 23 is inserted into the fixing hole 19, and the terminal box bottom plate portion 12, the terminal box body portion 13, and the terminal box cover 11 are fixed by the fixing nut 22 welded to the inner side surface of the terminal box body portion 13. Fastened together.

<Default state>
FIG. 11 is a diagram illustrating a state at the time of shipment of the electric terminal box 10 according to the present embodiment. When the electric motor 1 is shipped, as shown in FIG. 11, the terminal box bottom plate 12, so that the side opening 20 of the terminal box cover 11 is blocked by the surface of the terminal box body 13 that is not provided with the lead hole. The terminal box body 13 and the terminal box cover 11 are fastened together. Thereby, in the state before use, the inside of the motor terminal box 10 is kept clean without giving a special device (blocking with vinyl or tape) to the lead hole of the motor terminal box 10 and taking dust-proof measures. It becomes possible.

<Modification>
In the above-described embodiment, the motor terminal box has four side surfaces and the shape viewed from above is point symmetric and line symmetric (for example, square), but the side surface is not limited to four (shape is square). The number of side surfaces may be five or more (a terminal box having a regular polygonal column or a terminal box having a regular polygon when viewed from above). By increasing the number of side surfaces from four, more types of lead holes can be formed in the motor terminal box. Further, by providing a hole diameter reducing mechanism constituted by an orifice plate or the like in at least one outlet hole, various types of hole diameters may be supported.

<Summary>
The motor terminal box according to the present embodiment has three members: a terminal box bottom plate portion fixed to the frame of the motor, a terminal box body portion attached to the terminal box bottom plate portion, and a cover covered from the terminal box body portion. Consists of. The terminal box body portion has a plurality of power cable outlet holes with different diameter sizes on the side surface. Since the terminal box is composed of three members in this way, the diameter and direction of the lead hole can be changed by changing the mounting direction of the terminal box body while keeping the terminal box bottom plate fixed to the motor (without removing it). It can be changed easily. For example, after the motor is completed, the motor terminal box can be removed from the motor body even when there is a sudden change in the direction of the lead hole of the motor terminal box and the hole diameter of the motor terminal box when the motor is installed or after installation. The diameter and orientation of the lead-out hole can be changed without completely removing the terminal box (the bottom plate of the terminal box is fixed to the electric motor) and without having to install a terminal box with a new hole diameter.

  Moreover, the power cable outlet hole is not provided in at least one side surface of the terminal box body. By doing so, it becomes possible to additionally process an arbitrary hole diameter on one surface where the hole processing is not performed. Therefore, by sharing parts, it is provided for cost reduction and shelf reduction. .

  The terminal box bottom plate part and the terminal box body part are attached by stamping. Thus, since it was made to attach by the stamping method, it is not necessary to provide the part for attachment anew, and cost can be reduced. Moreover, since the stamping method can be stably attached, the reliability of the motor terminal box as a product can be improved.

  The terminal box cover is configured so that the terminal box body attached to the terminal box bottom plate can be covered from above. The terminal box cover has an opening on one of the plurality of side surfaces. When the terminal box bottom plate, the terminal box body, and the terminal box cover are attached, one of the plurality of power cable outlet holes is exposed by the side opening of the terminal box cover when the electric terminal box is used. It has become. By doing so, only the necessary lead holes can be exposed, and a dustproof / sandproof effect on the motor terminal box can be expected even when the motor is used.

  In addition, when the terminal box bottom plate part, the terminal box body part, and the terminal box cover are attached and before use of the motor terminal box, the side opening of the terminal box cover is not provided with a power cable outlet hole. It is blocked by the side of the body part. Thereby, in the situation before using an electric motor terminal box, such as at the time of shipment, it becomes possible to prevent intrusion of dust, dust, etc. into the electric motor terminal box.

  As described above, in the motor terminal box according to the present embodiment, the lead hole diameter can be easily changed. Specifically, when the terminal box cover is attached in a fixed direction and the terminal box body is attached to the terminal box bottom plate in the first attachment direction, the first size (for example, the maximum size diameter) is used. The power cable lead hole is exposed. In the state where the terminal box body is attached to the terminal box bottom plate in the second attachment direction, the power cable outlet hole of the second size (for example, medium size diameter) is exposed. Furthermore, when the terminal box body is attached to the terminal box bottom plate in the third attachment direction, the power cable outlet hole of the third size (for example, the minimum size diameter) is exposed.

  Further, as described above, in the motor terminal box according to the present embodiment, the exposure direction of the lead hole can be easily changed. Specifically, when the terminal box cover and the terminal box body are attached to the terminal box bottom plate in the first attachment direction (for example, the positive X-axis direction in FIG. 8), the first size (for example, the maximum size) The diameter of the power cable outlet hole is exposed in the first mounting direction. When the terminal box cover and the terminal box body are attached to the terminal box bottom plate in the second attachment direction (for example, the negative Y-axis direction in FIG. 8), the power cable of the first size (for example, the maximum size diameter) The lead hole is exposed in the second mounting direction. Furthermore, when the terminal box cover and the terminal box body are attached to the terminal box bottom plate in the third attachment direction (for example, the negative X-axis direction in FIG. 8), the first size (for example, the maximum size diameter) ) Is exposed in the third mounting direction.

  The rotating electrical machine of the present invention can be applied as an electric motor (motor) or a generator (generator).

DESCRIPTION OF SYMBOLS 1 Motor 2, 10 Motor terminal box 3 Terminal box case 4, 11 Terminal box cover 5 Outlet hole 6 Terminal box cover fixing hole 7 Terminal box cover fixing nut 8 Terminal box bottom plate part 9 Terminal box case body part 12 Terminal box bottom plate Part 13 Terminal box body part 14 Terminal box bottom plate fixing hole 15 Lead hole A
16 Outlet B
17 Opening hole C
19 Terminal box body fixing hole 20 Terminal box cover side opening 21 Terminal box cover fixing hole 22 Fixing nut 23 Fixing screw

Claims (9)

A rotating electrical machine having a terminal box that houses a connection terminal and has a power cable outlet hole,
The terminal box includes a bottom plate portion fixed to the frame of the rotating electrical machine, a body portion attached to the bottom plate portion, and a cover covered from above the body portion,
The body portion is a rotating electrical machine having a plurality of power cable outlet holes having different diameter sizes on a side surface thereof. In claim 1,
A rotating electrical machine in which the power cable outlet hole is not provided on at least one side surface of the body portion. In claim 1,
The rotating electrical machine in which the bottom plate part and the body part are attached by stamping. In claim 1,
The cover has an opening on one of a plurality of side surfaces,
A rotating electrical machine in which one of the plurality of power cable outlet holes is exposed by the opening when the terminal box is used in a state where the bottom plate portion, the body portion, and the cover are attached. In claim 2,
The cover has an opening on one of a plurality of side surfaces,
In a state where the bottom plate part, the body part, and the cover are attached, before the terminal box is used, the opening is closed by a side surface of the body part that is not provided with the power cable outlet hole. Rotating electric machine. In claim 1,
The mounting direction of the cover is constant,
In the state where the body part is attached to the bottom plate part in the first attachment direction, the power cable outlet hole of the first size is exposed,
In the state where the body portion is attached to the bottom plate portion in the second attachment direction, the power cable outlet hole of the second size is exposed,
A rotating electrical machine in which a third size power cable outlet hole is exposed in a state where the body portion is attached to the bottom plate portion in a third attachment direction. In claim 1,
In a state where the cover and the body portion are attached to the bottom plate portion in the first attachment direction, a power cable outlet hole of a first size is exposed in the first attachment direction,
In the state where the cover and the body part are attached to the bottom plate part in the second attachment direction, the power cable outlet hole of the first size is exposed in the second attachment direction,
In the state where the cover and the body portion are attached to the bottom plate portion in the third attaching direction, the rotating electrical machine in which the power cable outlet hole of the first size is exposed in the third attaching direction. In claim 1,
The said baseplate part, the said trunk | drum, and the said cover are the rotary electric machines currently fixed in one place of each each side surface. A rotating electrical machine terminal box that is attached to a rotating electrical machine and has a power cable hole for attaching a power cable for supplying power to the rotating electrical machine,
A bottom plate portion fixed to the frame of the rotating electrical machine, a body portion attached to the bottom plate portion, and a cover covered from above the body portion,
The body part is a rotating electrical machine terminal box having a plurality of power cable outlet holes having different diameter sizes on the side surface.

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