JPH069348U - Motor - Google Patents

Abstract

(57) [Summary] [Purpose] In a motor in which a winding is inserted into the slot from the outer peripheral direction of the iron core, the motor is required even if the distance of the slot opening is widened to facilitate winding work. Secure the characteristics. In a motor having a winding 2, a winding 2, a slot 4 including a slot opening portion, and an entire iron core 3 are filled with a mold resin 1 containing a magnetic material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a motor for inserting a winding from the outer circumference of an iron core.

[0002]

[Prior art]

 As shown in FIGS. 2 and 3, for example, a motor having a motor winding 2 has a coil-shaped winding 2 in which a slot 4 is formed in an iron core 3 formed by laminating a soft magnetic silicon steel plate or the like. Is inserted into the slot 4 from the slot opening portion on the outer peripheral side of the iron core 3 and fixed with a varnish or the like.

Since the characteristics of the motor are greatly affected by the shape of the slot 4, the distance between the open portions of the slot 4 is shortened in order to improve the characteristics, or, for example, when the iron core 3 is used as a stator, a magnetic yoke is used. -The slot 5 is short-circuited at 5 to form a magnetic circuit.

When the iron core 3 is used as a rotor, the outer circumference of the iron core 3 contacts the stator. Therefore, when the magnetic yoke 5 is used, the gap between the rotor and the stator is widened to improve the motor characteristics. In order to make it worse, the opening of the slot 4 is shortened to improve the characteristics.

[0005]

[Problems to be solved by the device]

 However, shortening the distance of the slot opening not only hinders the work of inserting the winding 2 into the slot 4, but may damage the winding 2 at the time of insertion. Therefore, the work of inserting the winding 2 is restricted.

Further, the outer peripheral surface of the iron core 3 is not uniform, and a gap is generated between the outer peripheral surface of the iron core 3 and the inner peripheral surface of the magnetic yoke, which increases the magnetic resistance of the magnetic circuit, so that the motor characteristics are improved. It may not be effective for improvement.

Therefore, in the present invention, in the motor in which the winding is inserted into the slot from the outer periphery of the iron core, even if the distance of the slot opening portion is widened to facilitate the winding work, the required motor characteristic is obtained. It is to ensure that.

[0008]

[Means for Solving the Problems]

 In the present invention, in the motor in which the winding is inserted into the slot from the outer circumference of the iron core, the entire iron core including the slot opening is filled with the mold resin containing the magnetic material.

[0009]

[Action]

 In the motor of the present invention configured as described above, even if the distance of the slot opening portion is wide, the magnetic substance in the mold resin constitutes a magnetic circuit, so that the required motor characteristics can be obtained. can get.

Further, when the iron core rotates, since the mold resin fixes the winding, the slot shape and the winding method are not restricted by the fixing.

[0011]

【Example】

 1 (A) and 1 (B) show an example of a motor using the present invention for a stator, in which an outer peripheral side opening of a slot 4 is formed wider in an iron core 3 and a winding 2 is formed from the opening of the slot 4. Is inserted into the slot 4 and the mold resin 1 is filled.

1 (A) and 1 (B) show that the outer peripheral side opening of the slot 4 is formed wider in the iron core 3 and the whole iron core including the winding 2 is filled with the mold resin 1. 2 is different from the conventional motor shown in FIGS.

The mold resin 1 is a heat-resistant thermosetting resin having an insulation class of B type or more, and a soft magnetic material having a particle size of 50 μm or less is mixed as a filler in a volume ratio of 10 to 80%. It shall have magnetic properties.

[0014]

According to the present invention described above, since the slot opening portion is wide, the winding 2 can be easily inserted into the slot 4, and the mechanization and efficiency of the winding insertion work can be achieved.

By filling the slot opening and the inside of the slot 4 with a mold resin having magnetic characteristics, the area of the slot 4 becomes magnetically equivalent to that of the motor having a reduced area. The characteristics are improved.

By reliably impregnating the inside of the winding 2 with the mold resin 1 having a high heat resistance, the heat resistance can be increased and the characteristics of the motor can be sufficiently exhibited, and at the same time, the mold can be sufficiently exhibited. The electromagnetic vibration and noise of the winding wire 2 can be reduced by the fixing with the resin 1.

[Brief description of drawings]

1A and 1B show a main part of an example of a motor of the present invention, in which FIG. 1A is a side view with a part in section, and FIG. 1B is a sectional view taken along line AA.

FIG. 2 is a diagram showing a main part of an example of a conventional motor.

3 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Mold resin 2 Winding 3 Iron core 4 Slot 5 Magnetic yoke

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Nakamura 3-1, Yoshino-cho, Nishibiwajima-cho, Nishibiwajima-cho, Nishikasugai-gun, Aichi Prefecture Takadake Manufacturing Co., Ltd. Technical Development Center (72) Inventor, Maru Fujimoto Kita-ku, Osaka-shi, Osaka 3-3-22 Nakanoshima Kansai Electric Power Co., Inc. (72) Inventor Atsushi Morimoto 3-3-22 Nakanoshima 3-32 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Kansai Electric Power Co., Inc.

Claims (1)

[Scope of utility model registration request] 1. A motor in which a winding is inserted from the outer periphery of an iron core, and the entire iron core including the winding is filled with a mold resin containing a magnetic material.