JP6771332B2 - Rotating electric machine and rotating electric machine terminal box - Google Patents

Description

The present invention relates to a rotary electric machine and a rotary electric machine terminal box.

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

JP-A-2007-14044

In the electric motor disclosed in Patent Document 1, parts such as a terminal block (connection with a lead wire) of the electric motor are fixed together with the terminal box case. Therefore, in order to change the orientation of the outlet hole of the motor terminal box after manufacturing the motor, it is necessary to remove the outlet 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, the motor terminal block, terminal block, and lead wire must all 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 decided, but for example, the diameter of the outlet hole of the motor terminal box could be changed at the timing of installing the motor, or the diameter of the outlet hole of the terminal box could be changed. There is a need to change the orientation. Regarding the change of the direction of the outlet hole, it is generally necessary to remove all the parts attached to the case of the motor terminal box, change the direction of the case and 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 having a new hole diameter and replace the case of the motor terminal box in the same manner as described above. Since these operations are extremely complicated, it is desirable that the specifications can be changed immediately when changing during the installation work.

The present invention has been made in view of such a situation, and it is possible to change the direction of the outlet hole of the motor terminal box and the hole diameter of the motor terminal box without removing the case of the motor terminal box from the motor. It provides the functions of the electric motor and the electric motor terminal box.

In order to solve the above problems, the present disclosure provides a rotary electric machine in which a connection terminal is housed and a terminal box having a power cable outlet hole is fixed. The terminal box includes a bottom plate portion fixed to the frame of the rotary electric machine, a body portion attached to the bottom plate portion, and a cover covered from above the body portion. The body portion has a plurality of power cable outlet holes having different diameter sizes on its side surface.

Further features relating to the present invention will become apparent from the description herein and the accompanying drawings. Moreover, the aspect of the present invention is achieved and realized by the combination of elements and various elements and the following detailed description and the aspect of the appended claims.

The description of the present specification is merely a typical example, and does not limit the scope of claims or application examples of the present invention in any sense.

According to the present disclosure, it is possible to change the direction of the outlet hole of the terminal box and change the hole diameter of the terminal box without removing the case of the terminal box from the rotary electric machine (electric motor).

It is a figure which shows the structure of the general electric motor 1 and the electric motor terminal box 2. It is a figure which shows the structure of the terminal box case 3 and the terminal box cover 4 which make up an electric motor terminal box 2. It is a figure explaining the structure of the electric motor terminal box 10 by embodiment of this disclosure. It is a figure which shows the example of the connection structure of the terminal box bottom plate portion 12 and the terminal box body portion 13 according to this embodiment. It is a figure which shows the state which saw the state which the terminal box bottom plate part 12 and the terminal box body part 13 of the electric motor terminal box 10 by this Embodiment were fitted in the inro from directly above. It is a figure which shows the state which changed the terminal box body part 13 in the 90 degree direction in the state which fixed the terminal box bottom plate part 12 of the electric motor terminal box 10 to the electric motor 1, and changed the diameter of a mouth hole. It is a figure which shows the state which attached the terminal box cover to the terminal box bottom plate 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 opening hole of the electric motor terminal box 10 by this embodiment. It is a figure for demonstrating the structure which fasten and fix the terminal box bottom plate part 12, the terminal box body part 13, and the terminal box cover 11 of the electric motor terminal box 10 together by this embodiment. It is a figure which shows the state before the terminal box cover 11 of the electric motor terminal box 10 by this embodiment is completely covered, and the state when it is completely covered. It is a figure which shows the state at the time of shipment of the electric motor terminal box 10 by this embodiment.

The following changes are the main changes in the specifications of the hole orientation and hole diameter of the terminal box of the electric motor.
(I) Regarding the change of the direction of the terminal box opening hole, the change in the 90 degree direction is the main.
(Ii) The diameter of the terminal box opening hole is mainly changed to 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 (bottom plate portion, body portion, and cover). Three of the side surfaces (for example, four surfaces) of the terminal box body have different hole diameters. One of the remaining surfaces has no holes, and when the motor is shipped, this surface is used as the opening hole surface to prevent dust and dirt from entering the terminal box until the motor is installed. It is a thing. Further, when corresponding to specifications other than the hole diameter dimension of the surface with a hole, it is possible to correspond to the addition of a new specification by additionally processing the surface without the hole. A terminal box fixing nut for tightening together with the terminal box bottom plate and the terminal box cover is provided at one location on each side surface of the terminal box body (for example, fixed by welding to the inside of the rough surface). Tighten together with the terminal box bottom plate and the terminal box cover using nuts to fix the three members.

The bottom plate of the terminal box is attached to the body of the terminal box by the inro method (inro fitting). The terminal box bottom plate portion has one hole on each side surface (for example, four side surfaces) for co-fastening 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 fixed portion of the terminal box 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 the portions. According to this method, the terminal box body and the terminal box cover can be changed in any four directions, so that 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 orientation and hole diameter of the outlet hole of the motor terminal box.

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the attached drawings, functionally the same elements may be displayed with the same number. The accompanying drawings show specific embodiments and implementation examples based on the principles of the present invention, but these are for the purpose of understanding the present invention, and in order to interpret the present invention in a limited manner. Not used.

In the present embodiment, the description is given in sufficient detail for those skilled in the art to carry out the present invention, but other implementations and embodiments are also possible, without departing from the scope and spirit of the technical idea of the present invention. It is necessary to understand that it is possible to change the structure and structure and replace various elements. Therefore, the following description should not be construed as limited to this.

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

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

FIG. 2 is a diagram showing a configuration of a terminal box case 3 and a terminal box cover 4 constituting the electric motor terminal box 2. FIG. 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. Further, the terminal box case 3 is provided with an outlet hole 5 for passing a power cable (not shown) in one of four directions. A nut for fixing the terminal box cover (not shown) is welded to the opening hole 5 at a fixed position on the inside of both side surfaces, and the terminal box cover 4 is the terminal box case 3 using this fixing nut. It is fixed (co-tightened) to. Further, in the terminal box case 3, the side surface is provided with an inclination from the surface provided with the outlet hole 5 toward the surface facing the surface (the surface not provided with the outlet hole 5). That is, the height of the surface on which the outlet hole 5 is not provided is set lower than the height of the surface on which the outlet hole 5 is provided. By doing so, it becomes possible to facilitate the connection work between the outlet wire (not shown) of the electric motor 1 and the power cable (not shown).

Since the general electric motor terminal box 2 has the above structure, once the electric motor terminal box (terminal box case 3) 2 is attached to the electric motor 1, the direction of the outlet hole 5 can be changed and the outlet hole can be changed. 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 completely remove the terminal box case 3 from the motor 1 once.

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

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

The terminal box body portion 13 is made of a tubular member, and has, for example, outlet holes (outlet holes A_15, outlet holes B_16, outlet holes C_17) having different diameters on three surfaces. The remaining one surface 18 is a surface that has not been drilled. This is so that a new outlet hole for the power cable having a diameter that cannot be accommodated by the three types of outlet holes can be provided on the remaining surface 18. Further, when the electric motor 1 to which the electric motor terminal box 10 is attached is shipped, the outlet holes 15 to 17 are closed with the terminal box cover 11 so as not to be exposed (at this time, the side opening 20 of the terminal box cover 11 is the remaining surface. This is to allow the side opening 20 to face the 18 and be closed by the surface 18). Further, the terminal box body portion 13 is provided with 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 into the terminal box bottom plate portion 12 (inro fitting as described later), the four fixing holes 19 are aligned with the fixing holes 14 of the terminal box bottom plate portion 12. There is.

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 opening holes A_15, the opening holes B_16, and the opening holes C_17 of the terminal box body portion 13. It is provided on the side surface. 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 placed over the terminal box body portion 13 and the terminal box bottom plate portion 12, the four fixing holes 21 are the fixing holes 19 of the terminal box body portion 13 and the terminal box bottom plate portion 12. It is designed to match both of the fixing holes 14.

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

As shown in FIG. 4, the lower portion of the terminal box body portion 13 has a narrowed shape. As a result, the terminal box bottom plate portion 12 and the terminal box body portion 13 are fitted by the inro 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 portion 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 at one location on each of the four surfaces of the terminal box bottom plate portion 12 of the terminal box body portion 13 and the portion to be fitted with the inro (for example, the fixing nut 22 is provided on the terminal box body portion 13). It is welded to the lower part of the side surface of. As described above, screwing is usually carried out on two diagonal surfaces (two places) (when the size of the entire motor terminal box 10 is large, it is screwed at four places).

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 opposite is not preferable because when water collects in the connection portion between the terminal box body portion 13 and the terminal box bottom plate portion 12, water may infiltrate into the motor terminal box from the connection portion.

<About the position of co-tightening>
FIG. 5 is a view showing a state in which the terminal box bottom plate portion 12 and the terminal box body portion 13 of the electric motor terminal box 10 according to the present embodiment are fitted in an inro 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 stamped cage are viewed from directly above, both have a line-symmetrical and point-symmetrical shape (for example, a square (the corners may be rounded)). )), And the terminal box body portion 13 can be attached and changed every 90 degrees around the terminal box bottom plate portion 12. When the terminal box cover 11 is covered, one place on each side of the terminal box bottom plate portion 12, the terminal box body portion 13, and the terminal box cover 11 (there is not one fixing hole on each side). It is also good), and it is fastened together with the fixing screw and the fixing nut. In this way, it is possible to further simplify the work of attaching the motor terminal box 10, changing the hole diameter, and changing the hole direction by only tightening one place on each side. Further, as shown in FIG. 5, the co-fastening locations are, for example, the lines connecting the co-fastening positions of the facing surfaces are close to a diagonal line and are substantially orthogonal to each other. By setting the co-tightening position almost diagonally in this way, it is possible to fix the joint more firmly even if it is fastened only at one place on each side.

<About changing the diameter of the opening hole>
FIG. 6 is a diagram showing 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 motor terminal box 10 fixed to the motor 1 according to the present embodiment, and the diameter of the opening hole is changed. is there. FIG. 6A shows a case where the outlet hole C_17 is used as the outlet hole of the power cable. FIG. 6B shows a case where the outlet hole B_16 is used as the outlet hole of the power cable. FIG. 6C shows a case where the outlet hole A_15 is used as the outlet hole of the power cable. The outlet hole A_15 is a medium-sized outlet hole, the outlet hole B_16 is the minimum size outlet hole, and the outlet hole C_17 is the maximum size outlet hole.

As shown in FIG. 6, by replacing the terminal box body portion 13, it is possible to direct the outlet hole A, the outlet hole B, and the outlet hole C in any four directions, and the connection method of the power cable is fixed. If this is the case, the size of the outlet hole can be changed according to the diameter size of the power cable.

FIG. 7 is a diagram showing 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 electric motor terminal box 10 according to the present embodiment. By simply rotating the terminal box body 13 by 90 degrees without removing the terminal box bottom plate 12 from the motor 1 by the method described with reference to FIG. 5, the diameter of the outlet hole of the motor terminal box 10 can be changed every 90 degrees, and any outlet can be used. It is possible to change to the opening hole A_15, the opening hole B_16, and the opening hole C_17 in the hole direction. FIG. 7A shows an overall image of the motor terminal box 10 when the maximum size outlet hole C_17 is used as the outlet hole for the power cable. FIG. 7B shows an overall image of the motor terminal box 10 when the medium-sized outlet hole A_15 is used as the outlet hole for the power cable. FIG. 7C shows an overall image of the motor terminal box 10 when the smallest size outlet hole B_16 is used as the outlet hole for the power cable.

<About changing the direction of the opening hole>
FIG. 8 is a diagram for explaining a change in the direction of the outlet hole of the electric motor terminal box 10 according to the present embodiment. In FIG. 8, the diameter of the outlet hole is constant (for example, the outlet hole A_15), and only the direction of the outlet hole is changed. FIG. 8A is a diagram showing a state when the opening hole A_15 is directed in the positive direction of the X-axis. FIG. 8B is a diagram showing a state when the opening hole A_15 is directed in the negative direction of the Y-axis. FIG. 8C is a diagram showing a state when the opening 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 orientation of the outlet hole, the terminal box body portion 13 is replaced to change the orientation of the specific outlet hole. You can change it. In this way, if the terminal box body 13 and the terminal box cover 11 are rotated 90 degrees and attached without removing the terminal box bottom plate 12 from the motor 1, the direction of the outlet hole of the terminal box can be changed to an arbitrary 90 degree direction. can do.

Although the internal structure of the electric motor 1 is not shown, for example, the electric motor housing, the rotor, the stator, the shaft, the bearing, the end bracket, and the fan (the fan is an indispensable configuration depending on the type of the electric motor). Not) and.

<Co-tightening structure>
FIG. 9 is a diagram for explaining a structure for jointly fastening and fixing the terminal box bottom plate portion 12, the terminal box body portion 13, and the terminal box cover 11 of the electric motor terminal box 10 according to the present embodiment. FIG. 9 shows the internal structure of the electric motor terminal box 10 when viewed from the side surface. 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'appears (since FIG. 9A is not a cross-sectional view), but the fixing nut The 22 and the fixing screw 23 are arranged in front of the paper surface, and the fixing nut 22'and the fixing screw 23'are arranged in the back of the paper surface.

FIG. 10A is a diagram showing a state before the terminal box cover 11 of the electric motor 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 electric motor terminal box 10 according to the present embodiment is completely covered. In FIG. 10A, there are two holes, a fixing hole 19 and a fixing nut 22 on the side of the opening hole that is not used for fixing the terminal box cover 11 and the opposite side. On the other hand, as shown in FIG. 10B, by completely covering the terminal box cover 11, the fixing hole (unused fixing hole) 19 is closed by the terminal box cover 11, so that the airtightness inside the terminal box can be maintained. This makes it possible to protect the inside of the motor terminal box 10 from sand, dust, and dust.

When the terminal box bottom plate portion 12, the terminal box body portion 13, and the terminal box cover 11 are fastened together, first, as shown in FIG. 4, the terminal box body portion 13 is fitted into the terminal box bottom plate portion 12 (inro fitting). .. 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 portion 12 and the fixing holes 19 of the terminal box body portion 13. match. Then, 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 formed by the fixing nut 22 welded to the inner side surface of the terminal box body portion 13. It is fixed together.

<State at the time of shipment>
FIG. 11 is a diagram showing a state at the time of shipment of the electric motor 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 portion 12 is closed so that the side opening 20 of the terminal box cover 11 is closed by the surface of the terminal box body portion 13 not provided with the opening hole. The terminal box body 13 and the terminal box cover 11 are fastened together. As a result, in the state before use, the inside of the motor terminal box 10 is kept clean without taking special measures (blocking with vinyl, tape, etc.) in the opening hole of the motor terminal box 10 to prevent dust. It becomes possible.

<Modification example>
In the above-described embodiment, the electric terminal box having four side surfaces and the shape seen from above is point-symmetrical and line-symmetrical (for example, square) has been described, but the side surfaces are not limited to four (square shape). , The number of side surfaces may be 5 or more (a terminal box having a regular polygonal column, or a terminal box having a regular polygonal shape when viewed from above). By increasing the number of side surfaces to more than four, it becomes possible to form more types of outlet holes in the motor terminal box. Further, by providing a hole diameter narrowing mechanism formed of an orifice plate or the like in at least one outlet hole, it may be possible to deal with various types of hole diameters.

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

Further, the power cable outlet hole is not provided on at least one side surface of the terminal box body. By doing so, it is possible to additionally machine an arbitrary hole diameter on one surface where the hole is not machined, and thus it is possible to reduce the cost and the remaining shelf capacity by sharing the parts. ..

The terminal box bottom plate and the terminal box body are attached by fitting inro. Since the inro method is used for mounting in this way, it is not necessary to re-install parts for mounting, and the cost can be reduced. In addition, since the inro 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 portion attached to the terminal box bottom plate portion can be covered from above. Further, the terminal box cover has an opening on one of its plurality of side surfaces. Then, 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 motor terminal box is used. It has become. By doing so, only the necessary outlet holes can be exposed, and dustproof and sandproof effects on the inside of the motor terminal box can be expected even while the motor is in use.

Further, when the terminal box bottom plate, the terminal box body, and the terminal box cover are attached, and before the 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 fuselage. This makes it possible to prevent dust and dirt from entering the motor terminal box before the motor terminal box is used, such as at the time of shipment.

As described above, in the motor terminal box according to the present embodiment, the diameter of the outlet hole 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. ) Power cable outlet hole is exposed. When 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. Further, when the terminal box body portion is attached to the terminal box bottom plate portion 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 outlet 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 X-axis positive direction in FIG. 8), the first size (for example, the maximum size). The power cable outlet hole (diameter) 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 direction of the Y axis in FIG. 8), the power cable of the first size (for example, the maximum size diameter) The outlet hole is exposed in the second mounting direction. Further, when the terminal box cover and the terminal box body portion are attached to the terminal box bottom plate portion in the third attachment direction (for example, the negative direction of the X axis in FIG. 8), the first size (for example, the maximum size diameter) is used. ) Power cable outlet hole is exposed in the third mounting direction.

The rotary electric machine of the present invention can be applied as both an electric motor (motor) and a generator (generator).

1 Electric motor 2, 10 Electric machine 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 9 Terminal box case Body 12 Terminal box bottom plate Part 13 Terminal box Body part 14 Terminal box bottom plate fixing hole 15 Outlet hole A
16 Outlet hole B
17 Outlet 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 rotary electric machine that houses connection terminals and has a terminal box with a power cable outlet hole.
The terminal box includes a bottom plate portion fixed to a frame of a rotary electric machine, a body portion attached to the bottom plate portion, and a cover covered from above the body portion.
The body portion includes at least one type 1 side surface and a plurality of type 2 side surfaces.
The first-class side surface is a surface on which the power cable outlet hole is not provided.
The second type side surface is a surface provided with the power cable outlet hole.
The body portion has one power cable outlet hole on each of the second type side surfaces.
Each of the power cable outlet holes provided on the side surface of the second type has a different diameter size, and is a rotary electric machine. In claim 1,
A rotary electric machine in which the bottom plate portion, the body portion, and the cover are jointly tightened and fixed with common screws and common screw holes. In claim 1,
The bottom plate portion and the body portion are attached by inro fitting.
In the fitting portion by fitting the inro, the surface height of the body portion is higher than the surface height of the bottom plate portion, or is the same as the surface height of the bottom plate portion. In claim 1,
The cover has an opening on one of the plurality of sides.
A rotary electric 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 the plurality of sides.
In a state where the bottom plate portion, the body portion, and the cover are attached, the opening is closed by the side surface of the body portion to which the power cable outlet hole is not provided before the terminal box is used. Rotating electric machine. In claim 1,
When the cover and the body portion are attached to the bottom plate portion in the first attachment direction, the power cable outlet hole of the first size is exposed in the first attachment direction.
When the cover and the body portion are attached to the bottom plate portion in the second attachment direction, the power cable outlet hole of the first size is exposed in the second attachment direction.
A rotary electric machine in which the first size power cable outlet hole is exposed in the third mounting direction when the cover and the body portion are mounted on the bottom plate portion in the third mounting direction. In claim 1,
A rotary electric machine in which the bottom plate portion, the body portion, and the cover are fixed at one position on each side surface. A rotary electric machine that houses connection terminals and has a terminal box with a power cable outlet hole.
The terminal box includes a bottom plate portion fixed to a frame of a rotary electric machine, a body portion attached to the bottom plate portion, and a cover covered from above the body portion.
The fuselage portion has a plurality of power cable outlet holes having different diameter sizes on its side surface, and the cover has an opening on one of the plurality of side surfaces.
When the terminal box is used in a state where the bottom plate portion, the body portion, and the cover are attached, one of the plurality of power cable outlet holes is exposed by the opening.
The mounting direction of the cover is constant,
When the body portion is attached to the bottom plate portion in the first attachment direction, the power cable outlet hole of the first size is exposed.
When 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 rotary electric machine in which a power cable outlet hole of a third size is exposed when the body portion is attached to the bottom plate portion in a third attachment direction. Attached to a rotating electrical machine, having a power cable lead-out hole for attaching the power cable for supplying power to the rotating electrical machine, a rotating electrical machine terminal box,
It is provided with a bottom plate portion fixed to the frame of the rotary electric machine, a body portion attached to the bottom plate portion, and a cover covered from above the body portion.
The body portion includes at least one type 1 side surface and a plurality of type 2 side surfaces.
The first-class side surface is a surface on which the power cable outlet hole is not provided.
The second type side surface is a surface provided with the power cable outlet hole.
The body portion has one power cable outlet hole on each of the second type side surfaces.
Each of the power cable outlet holes provided on the side surface of the second type has a different diameter size, and is a rotary electric terminal box.

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