JPH04108360U - resin mold motor - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide a mounting structure that securely fixes the bearing bracket of a resin molded motor at low cost. [Structure] A mounting boss that protrudes in the axial direction is installed on the outside of the insulator that is inserted into the stator core and protects the insulation of the windings, and the outer periphery of the stator core with the windings is covered with an insulating thermosetting resin. When forming the outer cover, the mounting boss penetrates the outer cover, and the mounting portion formed on the bearing bracket is fixed to the mounting boss, thereby reliably fixing the bearing bracket. do.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a resin molded motor, and more specifically to a holding structure for a bearing bracket. It is related to.

0002

[Conventional technology]

The holding structure of the bearing bracket 5 of the resin molded motor is a resin molded stay. Fix the bearing bracket 5 directly to the outer cover at the specified position of the motor using self-tapping screws. Or, as shown in Figure 3, insert the bearing bush into the stepped recesses formed on both sides of the stator. A method of press-fitting the outer circumference of the racket 5 and fixing it with adhesive 12 after press-fitting, or Fig. 4 As shown in the figure, a flange protruding outward is provided on the outer circumference of the bearing bracket 5. Form a hook hole 13 at the designated position, and pull the upper and lower bearing brackets 5 across the stator. A method of mounting and fixing using a pair of fixing springs 14 that are locked by the hanging holes 13 has been adopted. There is.

0003 When directly screwed onto the outer sheath, depending on the thermosetting resin, it may be installed using self-tapping screws. There are cases where mechanical stress remains on the parts and they break due to stress during transportation or operation. It has occurred.

0004 In addition, in the case of press-fitting, the bearing bracket 5 is generally made of metal, and the stator stage recess is thermohardened. Since it is made of chemically resistant resin, the recesses in the stator stage may damage due to temperature rise during use. Due to the difference in thermal expansion between the bearing bracket 5 and the bearing bracket 5, the holding of the bearing bracket 5 becomes incomplete. Avoid accidents such as the bearing bracket 5 moving due to vibration during use and locking the rotor. This may occur, and fixing with adhesive 12 must be used as reinforcement. First, when using Adhesive 12, the time required for applying Adhesive 12 and leaving it for heating or drying is limited. The workability was poor and production was hindered.

[0005] In addition, although fixing and holding using the fixing spring 14 has good assembly workability, the shape of the fixing spring 14 is It has the disadvantage of being complex and costly.

[0006]

[Problem that the idea aims to solve]

This invention was devised in view of the above-mentioned conventional problems. The purpose is to provide a mounting structure that securely fixes the receiving bracket at low cost. are doing.

[0007]

[Means to solve the problem]

In order to achieve the above purpose, the above-mentioned outer covering is protruded outwardly on the outer surface of the insulator. Form multiple mounting bosses that pass through the bearing bracket, and screw the above bearing bracket onto the mounting bosses. I did it like that.

[0008]

[Effect]

According to the above configuration, the mounting boss that is exposed from the insulator through the outer sheath is By screwing the bearing bracket onto the same mounting boss, assembly workability and fixation are improved. Installation can be carried out with good reliability.

[0009]

【Example】

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Figure 1 shows the installation of the stator core 1 of a resin molded motor and the insulator 2 of the present invention. This is a partially omitted perspective view showing the attached state, and the outside of the stator core 1 is viewed from both sides of the stator core 1. It covers the periphery and covers the inner teeth, and the winding is wound on top of the insulator 2. and is insulated from the stator core 1. The insulator 2 is formed with a mounting boss 3 that protrudes outward. A mounting screw hole 11 (not shown) is formed at the tip.

0010 Figure 2 shows a stator core 1 with windings and an outer sheath 4 made of insulating thermosetting resin. The mounting relationship between the completed stator and the bearing bracket 5 is shown, and the rotor is omitted for the sake of explanation. are doing. The bearing bracket 5 is provided with a flange 6 on the outer periphery, and the flange 6 has a flange 6 at a symmetrical position. A plurality of mounting portions 7 are provided that protrude outward, and mounting holes 8 are provided at predetermined positions of the mounting portions 7. It is formed.

[0011] On the other hand, there is a recess on the side of the stator that matches the shape of the flange 6 of the bearing bracket 5. 9 is formed, and the mounting boss 3 of the insulator 2 is placed on the surface at a predetermined position at the bottom of the recess 9. It is exposed so that it becomes one. Insert the rotor into the stator and attach the bearing bracket 5 with bearings mounted from both the top and bottom sides. Insert the bearing bracket 5 along the rotation axis of the rotor into the side recess 9 of the stator. Insert the flange 6 and fix it with the mounting screw 10 to make the rotor eccentric. It can be installed securely without having to do anything.

0012

[Effect of the idea]

As described above, in this invention, the insulator penetrates through the outer sheath and is exposed. By forming a mounting boss, the bearing bracket can be securely fixed. More resistant to vibration and shock than conventional press-fit adhesives or direct screwing to the outer sheath. We can provide a mounting structure for bearing brackets that is strong and does not require high costs. Ru.

[Brief explanation of drawings]

FIG. 1 is a partially omitted perspective view showing how a stator core and an insulator of a resin molded motor are attached.

FIG. 2 is a perspective view showing the attachment relationship between a stator with an outer covering and a bearing bracket.

FIG. 3 is a perspective view showing a conventional attachment method.

FIG. 4 is a perspective view showing another conventional attachment method.

[Explanation of symbols]

1 Stator core 2 Insulator 3 Mounting boss 4 Outer covering 5 Bearing bracket 6 Flange 7 Mounting part 8 Mounting hole 9 Recess 10 Mounting screw 11 Mounting screw hole 12 Adhesive 13 Hook hole 14 Fixed spring

Continuation of front page (72) Creator Shigeyasu Mori 1116 Suenaga, Takatsu-ku, Kawasaki City Fuji Co., Ltd. Inside General (72) Creator Takahiro Iga 1116 Suenaga, Takatsu-ku, Kawasaki City Fuji Co., Ltd. Inside General

Claims (1)

[Scope of utility model registration request] Claim 1: A rotor is inserted into a stator in which a winding is wound around a stator core through an insulator made of an insulating material, and the outer periphery is covered with a jacket made of a thermosetting resin. In a resin molded motor equipped with a bearing bracket that pivotally supports a rotating shaft, a plurality of mounting bosses are formed on the outer surface of the insulator and extend through the outer sheath, and the bearing bracket is screwed onto the mounting bosses. A resin molded motor characterized by being shaped as if it were worn.