JPH10117457A - Rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a rotary electric machine, in which the connecting positions of lead wires connected to a power source can be discriminated easily and the size of a terminal box can be reduced, and then the wiring in the terminal box can be simplified by covering terminal blocks, to which the other lead wires than the lead wires connected to the power source are connected with a cover. SOLUTION: Since terminal blocks other than a terminal block 12 to which lead wires connected to a power source are connected, namely, terminal blocks 13 and 14 which are mounted on a substrate 10 are covered with a second substrate 18, arranged on the substrate 10 and only the terminal block 12 which is directly required by users is exposed, the connecting positions of lead wires connected to the power source can be discriminated easily, even when the wiring becomes complicated due to the increased number of poles. In addition, since the terminal block 22, etc., to which lead wires for control are connected, is mounted on the second substrate 18, the size of a rotary electric machine can be reduced by reducing the occuped space of the machine and the operability of the machine can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating electric machine such as a geared motor, and more particularly to a structure of a terminal box for accommodating a board on which a plurality of terminal boards to which internal lead wires and external lead wires are connected are mounted. Things.

[0002]

2. Description of the Related Art FIG. 4 is a plan view showing the structure of a terminal box of a conventional rotary electric machine of this kind disclosed in, for example, JP-A-57-25133. In the drawing, reference numeral 1 denotes an underframe fixed to an outer peripheral portion of a frame of a rotating electric machine (not shown), 2 denotes a terminal plate fixed to a bottom of the underframe 1 by mounting screws 3, and 4 denotes a terminal board from the inside. The internal lead wire 5 drawn out and connected to one side of the terminal plate 2 is drawn into the inside through the rubber bush 6 of the drawing hole formed in the side surface of the underframe portion 1 and connected to the other side of the terminal plate 2. An external lead wire 7 for connecting a power supply is a screw hole formed in a mounting seat of the underframe 1, and a cover portion (not shown) for covering an upper portion of the underframe 1.
It is provided for attaching. Reference numeral 8 denotes a protrusion that covers the outlet of the internal lead wire 4.

[0003]

In the conventional rotating electric machine, the terminal box is constructed as described above, and the terminal to which the internal lead wire 4 which is not directly required by the user is connected is exposed. If the number of wires increases or the wiring becomes complicated, it is difficult to determine the connection position of the external lead wire 5 and the terminal board 2
When multiple poles are arranged, the terminal box becomes large because the installation area increases, and when the external lead wires 5 are wired in parallel, they must be taken out from one lead hole. There are problems such as complicated wiring inside.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it has been made easy to determine the connection position of a lead wire for power supply connection, to make the terminal box compact, and to simplify the wiring in the terminal box. It is an object of the present invention to provide a rotating electric machine that can be implemented.

[0005]

According to a first aspect of the present invention, there is provided a rotating electric machine on which a plurality of terminal plates to which a power supply connection lead wire and other lead wires are connected are mounted on an outer peripheral portion of a frame. In a rotating electric machine provided with a terminal box for accommodating therein, a terminal plate to which other lead wires are connected is covered with a cover.

According to a second aspect of the present invention, there is provided a rotating electric machine according to the first aspect, wherein the second substrate is provided with a terminal board on which a cover is displayed and a control lead wire is connected. is there.

According to a third aspect of the present invention, there is provided the rotating electric machine according to the first or second aspect, wherein the first screw portion for fixing the terminal box to the frame at one end and the substrate for supporting and fixing the substrate at the other end. The second threaded portion is provided with a spacer made of metal.

According to a fourth aspect of the present invention, there is provided a rotating electric machine having a terminal for accommodating a substrate on which a plurality of terminal plates to which power supply connection lead wires and other lead wires are connected are mounted on an outer peripheral portion of a frame. In a rotating electric machine provided with a box, the terminal box is constituted by a frame portion that is open at the top and on which a substrate is mounted, and a cover portion that fits over the frame portion and closes the opening. A predetermined number of holes or notches on the side, a first hole or notch that exposes each hole or notch in a fitted state at a position corresponding to each hole or notch on one side of the cover portion, and the like. The cover is rotated to a position at least one less symmetrical to the first hole or notch on the side and one of the holes or notches is fitted in the other side corresponding to the position of each hole or notch. A second hole or notch exposing each remaining hole or notch except for the individual The is obtained by forming, respectively.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 is an exploded perspective view showing a configuration of a terminal box of a rotary electric machine according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing a configuration viewed along line II-II in FIG. 1, and FIG. FIG. 3 is a plan view illustrating a configuration viewed along a line III-III in FIG. 1.

In FIG. 1, reference numeral 9 denotes an underframe formed in a box shape and attached to a rotating electric machine frame (not shown). A fitting portion 9a to which a cover described later is fitted around the upper portion is provided. Notch 9b and hole 9c which are formed and through which an external lead wire to be described later penetrates and is taken out.
Are formed. 10 is a mounting screw 1 on the bottom of the underframe 9
A substrate 12 fixed by 1 is mounted on the substrate 10 and connected to a lead wire (not shown) for power supply connection introduced from the notch 9b or the hole 9c of the underframe 9. Terminal board.

The first and second terminal plates 13 and 14 are mounted on the substrate 10 in the same manner as the first terminal plate 12, and are connected to the second lead and the wirings 16 and 17 from a control device (not shown). The third terminal plate 18 is a spacer 1 on the substrate 10.
A second substrate supported and fixed via 9, 20, 21;
A fourth terminal plate 22 to which display and control lead wires (not shown) are connected, a volume 23, a connector 24 for external connection, and the like are placed, and the second and third terminal plates 13 on the substrate 10. 14 are arranged so as to cover them.

Numeral 25 denotes a fitting portion 9a formed around the upper portion of the underframe portion 9 and a lower portion thereof covers the upper portion of the underframe portion 9 by fitting to form a terminal box 26 together with the underframe portion 9. A semicircular notch 25a having the same radius as the hole 9c of the underframe 9 and a notch 25b having the same shape as the notch 9b are formed on one side thereof,
The other side has a notch 25 at a position symmetrical to the notch 25a.
c is formed.

As described above, the terminal box 26 of the rotating electric machine according to the first embodiment is constituted, and the power supply connection lead mounted on the substrate 10 is provided by the second substrate 18 disposed on the substrate 10. Other terminal boards except the first terminal board 12 to which the wires are connected, that is, the second and third terminal boards 1
Since the first and second terminal strips 12 and 14 are covered, only the first terminal board 12 directly required by the user is exposed. Therefore, even if the number of poles is increased or the wiring is complicated, the lead wire for power supply connection is used. Can be easily determined.

Further, since the fourth terminal plate 22 and the like to which the display and control lead wires are connected are mounted on the second substrate 18, it is possible to reduce the size and improve the operability by saving space. It is also possible to achieve
5, two notches 25a, 25b on one side and
5c are formed, respectively, so that when one side is fitted to the side of the underframe 9 where the notch 9b and the hole 9c are formed, each notch 9b, 25a, 25b is formed.
The large and small two drawing holes can be formed by the cooperation of the hole 9c and the notch 9b and the hole 9c of the underframe 9 on the other side by rotating the cover 25 by 180 °. And the notch 25c, a single drawing hole can be formed by the cooperation of the holes 9c and the notch 25c. Therefore, the number of drawing holes depends on the wiring condition in the terminal box 26. Can be changed, the wiring in the terminal box 26 is simplified, and the work is facilitated.

Although the fixing of the frame and the terminal box 26 has not been described in detail above, for example, a first screw portion on one end and a second screw portion for supporting and fixing the substrate 10 on the other end are provided. If the formed metal spacer (not shown) is applied and the terminal box 26 is fixed to the frame by the first screw portion, the spacer not only supports the substrate 10 but also serves as an earth pattern of the substrate 10. , It is not necessary to provide a ground terminal, so that assembly is easy and the number of parts can be reduced.

In the above description, the second and third terminal plates mounted on the substrate 10 are provided by the second substrate 18 on which the fourth terminal plate 22 to which the display and control lead wires are connected is mounted. 1
Although the cover 3 and 14 are covered, the present invention is not limited to this, and the cover 3 and 14 may be covered with a cover only for covering. Furthermore, in the above description, the notch 9b and the hole 9c are formed in the underframe 9 constituting the terminal box 26, and the notches 25a, 25b, 25c are formed in the cover 25, respectively. The number of 1
Although the number of cutouts and holes is changed to two or more, by appropriately selecting the number or shape of the notches and holes, it is possible to obtain a desired shape and number of drawn holes.

[0017]

As described above, according to the first aspect of the present invention, the substrate on which the plurality of terminal plates to which the power supply connection lead wires and other lead wires are connected is mounted on the outer peripheral portion of the frame. In a rotating electrical machine having a terminal box to be housed, a terminal board to which other lead wires are connected is covered with a cover, so that it is possible to easily determine a connection position of a power connection lead wire in the terminal box. be able to.

According to a second aspect of the present invention, in the first aspect, the cover is configured by the second substrate on which the terminal plate to which the display and control lead wires are connected is mounted, so that the power supply is connected. It is possible to provide a rotating electric machine that can easily determine the connection position of the lead wires in the terminal box and that can reduce the size of the terminal box.

According to a third aspect of the present invention, in the first or second aspect, the first screw portion for fixing the terminal box to the frame on one end side and the second screw portion for supporting and fixing the substrate on the other end side. Provided is a rotating electrical machine that has a threaded portion and a spacer made of metal, so that even in the case of a single-sided board, the ground terminal can be installed at the same position as the position where the power supply lead wire is connected. can do.

According to a fourth aspect of the present invention, there is provided a terminal box for accommodating a substrate on which a plurality of terminal boards to which a power supply connection lead wire and other lead wires are connected are mounted on an outer peripheral portion of a frame. In the rotating electric machine provided with the terminal box, the terminal box is configured by a frame portion on which the upper side is opened and the substrate is mounted, and a cover portion which fits on the upper portion of the frame portion and closes the opening. A first number of holes or notches, which exposes each hole or notch in a fitted state at a position corresponding to each hole or notch on one side of the cover portion, and a predetermined number of holes or notches, The cover is rotated to a position symmetrical to the first hole or notch and at least one less, and one of the holes or notches is fitted with the other side corresponding to the position of each hole or notch. A second hole or notch that exposes each remaining hole or notch Having been formed, it is possible to pull out the lead wire from a desired position, it is possible to simplify the wiring in the terminal box to provide a rotary electric machine capable.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a terminal box of a rotary electric machine according to Embodiment 1 of the present invention.

FIG. 2 is a plan view showing a configuration viewed along a line II-II in FIG. 1;

FIG. 3 is a plan view showing a configuration viewed along a line III-III in FIG. 1;

FIG. 4 is a plan view showing a configuration of a terminal box of a conventional rotating electric machine.

[Explanation of symbols]

9 Underframe part, 9a Fitting part, 9b, 25a, 25b, 2
5c notch, 9c hole, 10 substrate, 12 first terminal plate, 13 second terminal plate, 14 third terminal plate, 15
Internal lead wires, 18 second substrate, 22 fourth terminal plate, 25 cover part, 26 terminal box.

 ────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Toshio Oka 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation

Claims (4)

[Claims] 1. A rotating electric machine having a terminal box for accommodating a substrate on which a plurality of terminal boards to which a power connection lead wire and other lead wires are connected is provided on an outer peripheral portion of a frame. A rotating electric machine, wherein a terminal plate to which a wire is connected is covered with a cover. 2. The rotating electric machine according to claim 1, wherein the cover is constituted by a second substrate on which a terminal plate to which a display and control lead wire is connected is mounted. 3. A spacer comprising a first screw portion for fixing the terminal box to the frame on one end side and a second screw portion for supporting and fixing the substrate on the other end side, the spacer being made of metal. The rotating electric machine according to claim 1. 4. A rotary electric machine having a terminal box for accommodating a board on which a plurality of terminal boards to which a power supply lead wire and other lead wires are connected is provided on an outer peripheral portion of a frame. An upper side is opened, and a base frame part on which the substrate is mounted, and a cover part that fits on the upper part of the base frame part and closes the opening, is constituted by a predetermined number of holes or holes on one side of the base frame part. The notch has a first hole or notch that exposes the hole or notch in the fitted state at a position corresponding to the hole or notch on one side of the cover portion, and the first hole or notch on the other side. The cover is rotated to a position at least one less than the one hole or notch and the other side is fitted into the hole or notch in a fitted state corresponding to the position of each hole or notch. Exposing each of the remaining holes or notches except one A rotating electric machine, wherein two holes or notches are respectively formed.