JP3154731B2 - Electric motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor in which a connector housing for a terminal for guiding a power supply of the electric motor is formed integrally with a casing of the electric motor.

[0002]

2. Description of the Related Art An example of a conventional motor will be described below. FIG. 3A is a sectional view of a main part of a conventional electric motor,
FIG. 3B is a side view of a main part on the terminal side of the motor,
In these figures, reference numeral 20 denotes an electric motor.
20 is for the terminal part 21 with the yoke 221 and the front bracket
A mounting hole formed at the lower end of the side wall of the front bracket 222 and formed separately from the casing 22 made of
It is fitted and attached to 23.

The terminal portion 21 has three L-shaped power supply terminals 212 embedded in a connector housing 211 molded of an insulating material such as a synthetic resin.
One end of 212 protrudes from the top of the connector housing 211 and is connected to one end of the winding 24. The other end of the power supply terminal 212 has a fitting hole 25 for fitting a plug formed in the connector housing 211. Protruding inside. Further, a plate-like mounting foot portion 213 is provided at the lower center of the connector housing 211.
Are formed to protrude downward.

The casing 22 of the electric motor has a cylindrical yoke 22
1 and a front bracket 222 covering the opening of the yoke 221.
A rectangular mounting hole 23 is formed at the lower end of the side wall of the. The terminal portion 21 is mounted in the mounting hole 23 as described above. The mounting method is such that the terminal portion 21 is fitted into the mounting hole 23, and the mounting foot portion 213 of the terminal portion 21 is adhered and fixed to the stator 26. are doing.

[0005]

However, in the above-mentioned conventional construction, since the casing of the electric motor and the terminal are formed separately, a step of attaching the connector housing of the terminal to the casing is required in the assembling process. There is a problem that the man-hour is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide an electric motor capable of reducing the number of steps in an electric motor assembling process.

[0007]

According to the present invention, there is provided an electric motor comprising: a stator having windings wound around an iron core; a rotor provided in the stator; and a casing comprising a yoke and a bracket for accommodating the stator and the rotor. And a terminal part for guiding a power supply, wherein the yoke and the bracket are respectively integrated with a housing part of a connector housing.
And a power supply terminal is sandwiched between these housing portions to constitute a terminal portion into which a plug is inserted.

[0008]

According to the present invention, by configuring as described above,
Simply assembling the power supply terminal between the housing portions of the connector housing formed integrally with the divided casing and assembling the divided casing, the assembly of the terminal portion is automatically completed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the electric motor according to the present invention will be described below with reference to the drawings. FIG. 1A is a partial cross-sectional view showing one embodiment of the electric motor of the present invention, and FIG. 1B is a side view of a main part of the electric motor on the terminal side.

In these figures, reference numeral 1 denotes an electric motor. The electric motor 1 includes a stator 4 having a winding 3 wound around an iron core 2,
A rotatable rotor 5 provided inside the stator 4,
A casing 6 housing the stator 4 and the rotor 5,
And a terminal section 7 for guiding a power supply to the electric motor 1.

The stator 4 has a core 3 on which iron plates are laminated and a winding 3 formed by winding copper wires in multiple layers. The stator 4 is housed and fixed in a casing 6. The rotor 5 is fitted into the center of the.

The casing 6 comprises a cylindrical yoke 601, a front bracket 602 for covering a front opening of the yoke 601, and a rear bracket 603 for covering a rear opening. Both brackets 602,603
The bearings 8 and 9 are fitted into the bearings.
Is supported.

A terminal portion 7 is provided on a side wall of the casing 6. The terminal portion 7 includes housing portions 701 and 702 formed on a yoke 601 and a front bracket 602, respectively.
And a power supply terminal 703.

The housing 701 on the yoke 601 side is formed at the tip of a rectangular projection 604 projecting from the opening edge of the yoke 601 so as to project outward from the wall of the projection 604. A stepped portion for forming a fitting hole 10 for inserting a plug described later is formed at the tip of the housing portion 701, and the power supply terminal 703 is mounted slightly closer to the casing 6 than the stepped portion. Terminal mounting groove 711 for fitting piece 713
Are formed.

On the other hand, the housing part 702 on the front bracket 602 side is formed at the lower end of the concave part 605 of the front bracket 602 corresponding to the convex part 604 of the yoke 601. The housing 702 on the front bracket 602 side
In the same manner as the housing 701 on the yoke 601 side, a step for forming the fitting hole 10 is formed at the distal end, and a power supply terminal for soldering one end of the winding 3 toward the casing 6 from this step. A hole 712 through which the projection 723 of the 703 protrudes is formed.

The power terminal 703 is an L-shaped conductor plate, and has the mounting piece 713 fitted into the terminal mounting groove 711 and the projection 723 for soldering one end of the winding 3 as described above. I have.

Next, an example of an assembling procedure of the above configuration will be described. First, one end of the winding 3 of the stator 4 is soldered to the projection 723 of the power supply terminal 703, respectively.
1, the stator 4 is fitted and fixed, and the mounting piece 713 of the power terminal 703 is connected to the terminal mounting groove of the housing portion 701.
711.

After the rear bracket 603 is fitted on the rear side of the yoke 601, the rotor core 501 is connected to the stator 4.
One end of the shaft 502 of the rotor 5 is fitted into the bearing 8 of the rear bracket 603 while being fitted into the center of the shaft. Further, the opening of the yoke 601 is covered with the front bracket 602 while the other end of the shaft 502 is inserted through the bearing 9 of the front bracket 602, thereby completing the assembly.

By covering the opening of the yoke 601 with the front bracket 602, the yoke 60
The housing part 701 of FIG. 1 and the housing part 702 of the front bracket 602 are united, and the terminal part 7 is assembled.
Therefore, a step of attaching the connector housing 211 to the casing 22 unlike the terminal portion 21 of the conventional electric motor 20 is not required.

The electric motor 1 thus completed
A plug 11 as shown in FIG. 2 is inserted into the fitting hole 10 of the terminal portion 7 to make the electric power supply to the electric motor 1 conductive. In the above embodiment, the terminal portion 7 is provided between the yoke 601 and the front bracket 602, but the terminal portion of the present invention is not limited to such a position. The yoke 601 may be provided on the divided yoke 601, and the mounting position is not limited to the above-described embodiment.

[0021]

According to the present invention, the terminal section is completed at the same time by assembling the casing by the above structure, so that the work of mounting the connector housing becomes unnecessary and the number of steps in the assembling process can be reduced. Ma
Also, by inserting a plug into the terminal,
The power supply can be turned on.

[Brief description of the drawings]

FIG. 1A is a partial cross-sectional view showing an electric motor according to an embodiment of the present invention, and FIG. 1B is a partial side view of a terminal portion side.

FIG. 2 is a plan view of a plug fitted to a terminal of the electric motor of the present invention.

FIG. 3A is a partial sectional view of a conventional electric motor, and FIG.
FIG. 2 is a partial side view of a conventional motor on a terminal side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric motor 2 Iron core 3 Winding 4 Stator 5 Rotor 6 Casing 601 Yoke 602 Front bracket 603 Rear bracket 7 Terminal part 700 Connector housing 701 Housing part 702 Housing part 703 Power supply terminal

Claims (1)

(57) [Claims] A stator having a winding wound around an iron core, a rotor provided in the stator, a yoke and a bracket accommodating the stator and the rotor;
An electric motor comprising a terminal portion for guiding power, wherein a housing portion of a connector housing is formed integrally with the yoke and the bracket, and a power supply terminal is sandwiched between these housing portions, and a plug is inserted. Motor that constitutes the terminal part.