JP2002199643A - Ground fixing structure for motor stator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a grounding function by deriving a grounding wire connected to a ring shaped stator or a protruding board part outside a resin mold part. SOLUTION: This ground fixing structure is composed by deriving the grounding wire (7) connected to the ring shaped stator (1) or the protruding board part (23) of a printed board (20) connected to the grounding wire (7) outside the resin mold part (10) and securing the grounding function in the structure using the resin mold part (10).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grounding structure for a motor stator, and more particularly, to grounding when a resin mold is formed on the entire surface of a ring-shaped stator through a ground wire or a protruding substrate portion of a printed circuit board. The present invention relates to a novel improvement for eliminating the need to attach a ground wire to the front lid, the rear lid, and the case by projecting from the case.

[0002]

2. Description of the Related Art Conventionally, as a ground mounting structure for a motor stator of this type, a front stator, a rear cover, and a case are attached after a stator winding is applied to a ring-shaped stator. Was connected to the ground wire.

[0003]

Since the conventional motor stator ground mounting structure is configured as described above, there are the following problems. That is, in the conventional configuration, after the motor is completed, the ground wire is connected to the front cover, the rear cover, and the case. Therefore, when applied to a structure in which the entire ring-shaped stator is molded with resin, it is impossible to take the ground by the ground wire. Had become.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In particular, the ground when a resin mold is formed on the entire surface of a ring-shaped stator is provided via a ground wire or a protruding substrate portion of a printed circuit board. An object of the present invention is to provide a motor stator ground mounting structure in which the ground wire does not need to be mounted on the front lid, the rear lid, and the case by projecting from the resin mold.

[0005]

A grounding structure for a motor stator according to the present invention is a motor stator in which a whole surface of a ring-shaped stator having a stator winding is covered with a resin mold portion, and a ground wire is connected to the ring-shaped stator. After that, the ring-shaped stator is covered with the resin mold portion, the ground wire is configured to protrude from the resin mold portion, and the entire surface of the ring-shaped stator having the stator winding is covered with the resin mold portion. Providing a printed board on the ring-shaped stator, connecting the ground wire provided on the ring-shaped stator to the printed board, covering the ring-shaped stator and the printed board with the resin mold portion, and connecting the printed pattern to the ground wire. The protruding substrate portion of the printed circuit board having the A structure that protrudes from the de unit.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a motor stator ground mounting structure according to the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a ring-shaped stator which is laminated in a multilayer shape to form a ring shape. The ring-shaped stator 1 is provided inside a ring-shaped stator yoke 2 and the ring-shaped stator yoke to form a ring shape. And an annular pole tooth portion 4 having a number of slots 3.

Each of the slots 3 has a ring-shaped pole tooth 4
A well-known insulating bobbin 5 is provided so as to cover the respective pole teeth 4 a and the slots 3. Each of the slots 3 is provided with a stator winding 6 wound therethrough via an insulating bobbin 5. In the case of the present embodiment, the annular stator 1 is formed into a two-piece shape of an annular stator yoke 2 and an annular pole tooth portion 4, and after winding the stator winding 6 around each slot 3, the annular stator yoke 2 is attached to the annular stator yoke 2. Although the configuration in which the tooth portions 4 are fitted has been described, the present invention is not limited to the configuration described above, and it is also possible to use an integrated configuration in which the slots are opened inward, and a laminated type and a non-laminated type. Can be.

A ground wire 7 is connected to the end face 2a of the annular stator yoke 2 by soldering or the like. The ground wire 7 is led out from the outer diameter position 1a of the annular stator 1 so as to project sufficiently outward. Have been.

In the configuration shown in FIGS. 1 and 2 described above, a resin mold portion 10 is formed on the entire surface of the annular stator 1 by a resin mold as shown by a dashed line.
The ground wire 7 is led sufficiently outward from a mold outer diameter position 10 a of the resin mold portion 10.

Next, the configuration shown in FIGS. 3 and 4 shows another embodiment of the embodiment shown in FIGS. 1 and 2, and uses a printed circuit board 20. FIG. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. That is, FIG.
As shown in the figure, the overall shape is substantially horseshoe-shaped, and the printed pattern 21 connected to the stator winding 6 is formed.
have. At the center position of the arc portion 22 of the printed board 20, a protruding board portion 23 that protrudes in the radial direction of the annular stator 1 is integrally formed, and
Are extended to the protruding substrate portion 23 and connected to the terminal holes 24, respectively.

The ground wire 7 connected to the end face 2a of the annular stator 1 is connected to the protruding board portion 2 of the printed board 20.
The third print pattern 21 is connected to the empty pattern 21a. Therefore, as shown in FIG. 4, when the entire surface of the annular stator 1 is covered with the resin mold portion 10 so as to cover the printed board 20, the projecting substrate portion 23 projects from the mold outer diameter position 10 a of the resin mold portion 10. The empty pattern 21a, which is a part of the print pattern 21, is also provided so as to be exposed outward from the mold outer diameter position 10a.

[0012]

The grounding structure of the motor stator according to the present invention is constructed as described above, so that the following effects can be obtained. That is, the ground wire provided on the end face of the ring-shaped stator is sufficiently led out, or this ground wire is connected to the printed pattern of the protruding board portion of the printed board, so that the entire surface of the ring-shaped stator is Even when the resin mold portion is formed, the ground wire or the protruding substrate portion is led out from the outer diameter position of the resin mold portion to the outside, so that the ground function can be ensured even in the stator having the resin mold portion.

[Brief description of the drawings]

FIG. 1 is a plan view showing a grounding structure of a motor stator according to the present invention.

FIG. 2 is a front sectional configuration diagram of FIG. 1;

FIG. 3 is a plan view of another embodiment of FIG. 1;

FIG. 4 is a front sectional configuration diagram in which a resin mold portion is formed in the configuration of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ring-shaped stator 6 Stator winding 7 Earth wire 10 Resin mold part 20 Printed circuit board 21 Print pattern 23 Projecting board part

Continued on front page F-term (reference) 5H002 AA09 AB01 AB04 AC07 5H604 AA05 AA08 BB01 BB14 CC01 CC05 CC16 DA14 DB01 PC03 QB01 QB04 QB17 5H615 AA01 BB01 PP01 PP12 PP15 QQ02 SS44 TT26

Claims (2)

[Claims] An annular stator having a stator winding (6)
In the motor stator in which the entire surface of (1) is covered with a resin mold part (10), the ground wire is connected to the annular stator (1).
After connecting (7), the ring-shaped stator (1) is covered with the resin mold part (10), and the ground wire (7) is connected to the resin mold part.
(10) A grounding structure for a motor stator, wherein the grounding structure protrudes from (10). 2. A ring-shaped stator having a stator winding (6).
In a motor stator in which the entire surface of (1) is covered with a resin mold part (10), a printed board (20) is provided on the annular stator (1), and an earth wire (7) provided on the annular stator (1). After being connected to the printed board (20), the ring-shaped stator (1) and the printed board (20) are covered with the resin mold portion (10), and the printed pattern (21) connected to the ground wire (7). A grounding structure for a motor stator, wherein a protruding board portion (23) of the printed circuit board (20) having a protrusion protrudes from the resin mold portion (10).