JPH10153158A - Rotor of starting motor and armature coil supporting method the rotor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a ring for preventing slipping-off, prevent slipping-off of an armature coil, and improve productivity by forming a glass ring which is made of glass fiber resin of a fusing condition and having a constant width and a thickness, on an outer peripheral surface of the armature coil in a rotor of a starting motor. SOLUTION: In a rotor 10 of a starting motor containing armature coils 12, 12, an armature shaft 14, a supporting member 15, and the like, glass fiber resin of a fusing condition is coated on an outer peripheral surface of the armature coils 12, 12, and glass rings 16, 16 having a constant width and a thickness, and slipping-off of the armature coils 12, 12 is thus prevented. In this treatment, both end parts of the armature shaft 14 is rotatably supported, the glass fiber resin 20, 20 of the fusing condition are supported from resin containers 21, 21 simultaneously with rotating the rotor 10, and are coated on the outer peripheral surfaces of the armature coils 12, 12. When a prescribed time is lapsed, its resin 20, 20 are solidified, and the glass rings 16, 16 are thus formed with a constant width and a thickness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starting device for an automobile.
The present invention relates to a rotor of a starting motor (referred to as a "starter motor" or "starting motor") and a method of supporting an armature coil of the rotor. Eliminating the use of another coil separation prevention member to prevent detachment, contributing to improved productivity, positioning the armature coil accurately without assembly deviation,
Also, the present invention relates to a rotor of a starting motor and a method of supporting an armature coil of the rotor, which prevents a phenomenon in which a coating of an armature coil is removed or cut, thereby preventing a reduction in performance of the starting motor. It is.

[0002]

2. Description of the Related Art In general, an automobile engine which is an internal combustion engine cannot be started by itself. Therefore, when starting, the crankshaft must be rotated by an external force.

[0003] In addition, the rotation of the crankshaft cannot be started unless the speed exceeds a certain level. The motor and accessories used for starting are called starting motors.

A starting motor, currently a four-wheeled vehicle,
A direct-current DC motor that uses a battery as a power source is adopted. Since the above motor is sufficient in terms of engine cylinder volume, compression pressure, and each frictional force, the engine must be driven at a startable rotation speed,
It is necessary that the starting torque be large, and it is preferable to use one that is as small and lightweight as possible. Therefore,
The starting motor is composed of a DC series wound motor most suitable for this purpose, and a power transmission device for transmitting the power of the motor as an accessory to the engine.

[0005] As described above, the rotor constituting the starting motor is a portion that generates a rotational force, and a typical embodiment thereof will be described below with reference to the accompanying drawings.

FIG. 1 is a half sectional view showing the structure of a rotor of a starting motor. In the drawing, 1 is an armature core, 2 is an armature coil, 3 is a commutator, and 4 is an armature shaft. Numerals 5 and 5 respectively denote support members.

The armature core 1 supports the armature coil 2 and allows passage of lines of magnetic force generated from the field core, and at the same time, reduces the eddy current by 0.35 to 1.0 mm of Si steel. The plate has a stratified structure. When the rotor is rotated, the back electromotive force is maintained, so that heat is generated and the efficiency of the electric motor is reduced. No heat is generated.

The armature coil 2 is soldered to the commutator 3, and a current flows through all the coils, and the electromagnetic force generated at each coil is combined to rotate the armature.

The commutator 3 is formed in a circular shape by enclosing a light copper plate with an insulator so that a current supplied from the brush flows in a certain direction.

Since the armature shaft 4 receives a relatively large rotational force, the armature shaft 4 is made of special steel so as not to cause breakage, deformation, bending, and the like. It has grilled.

As mentioned above, the rotor of the starting motor is
In order to prevent the armature coil 2 from being detached by the centrifugal force generated during rotation, armature coil detachment prevention means is provided. An example of the armature coil detachment preventing means according to the related art will be described as follows.

As shown in FIGS. 2 and 3, anti-separation rings 6, 6 having a predetermined diameter, thickness and length are provided.
Are joined on both sides of the armature core 1, sandwiched between the outer peripheral surfaces of the armature coils 2, 2 on both sides, and a varnish is applied to the portions of the above-mentioned detachment preventing rings 6, 6, and the detachment is performed. By fixing the preventive rings 6, 6, the armature coil 2, due to centrifugal force during rotation of the rotor of the armature,
The gap between the two and the phenomenon of separation were prevented.

[0013]

However, in the above-described prior art of preventing the armature coil 2 from being detached, first, the detachment preventing ring 6 having a predetermined diameter, thickness and length is provided. In order to manufacture, a series of steps for manufacturing the detachment prevention ring 6, such as removing a pipe having a certain length and then cutting the pipe to a predetermined width as shown in FIG. Is not easy, and there is a disadvantage that it acts as a factor that lowers productivity.

As described above, the separation preventing rings 6 are provided on the outer peripheral surfaces of the armature coils 2 on both sides of the armature core 1.
After the primary connection of the rings 6, the detachment preventing rings 6, 6 are secondarily fixed using a burnisher. That is,
In the case of the primary connection of the separation preventing rings 6, 6, the separation preventing rings 6, 6 are not firmly fixed, and the armature coils 2, 2 are fixed during the burnishing work. There has been a problem that deviation of the assembly occurs due to detachment and flow of the prevention rings 6 and 6.

In addition, the above-mentioned separation preventing rings 6, 6
From the axial direction of the armature core 1 to the armature coil 2,
Since the armature coils 2 are horizontally moved and the outer peripheral surfaces of the armature coils 2 and 2 are wrapped, the armature coils 2 and 2 are removed by the movement of the separation prevention rings 6 and 6 and the armature coils 2 and In the case where the functions of the motors 2 and 2 cannot be sufficiently exerted and are more severe, there have been various problems such as cutting the armature coils 2 and 2 to lower the reliability of the starting motor.

Accordingly, a main object of the present invention is to eliminate the use of another coil separation preventing member for preventing the detachment of an armature coil, thereby contributing to an improvement in productivity. An object of the present invention is to provide a rotor for an electric motor and a method for supporting an armature coil of the rotor.

It is another object of the present invention to provide a rotor of a starting motor and a method of supporting the armature coil of the rotor, which can eliminate the deviation of the assembly and accurately position the armature coil. It is in.

Another object of the present invention is to prevent a phenomenon in which the coating of the armature coil is removed or cut off, thereby preventing the performance of the starting motor from deteriorating. And a method for supporting an armature coil of the rotor.

[0019]

In order to achieve the above object of the present invention, an armature core 1, an armature coil, a commutator,
In a rotor of a starting motor including an armature coil shaft, a supporting member, and the like, a glass ring formed of a molten glass fiber resin having a certain width and thickness is formed on an outer peripheral surface of the armature coil. Thus, there is provided a rotor for a starting motor.

[0020] The armature shaft of the rotor is rotatably supported and the rotor is rotated at a predetermined speed. A resin supply step of directly applying the molten glass fiber resin to the armature coil, and stopping the supply of the resin, solidifying the molten glass fiber resin, and applying the resin to the outer peripheral surface of the armature coil. And forming a glass ring with a constant width and thickness, respectively. The method for supporting an armature coil of a starting motor rotor is provided.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a rotor of a starting motor and a method of supporting an armature coil of the rotor according to the present invention will be described with reference to the accompanying drawings.

FIG. 4 is a half sectional view for explaining a rotor of a starting motor and a method of supporting an armature coil of the rotor according to the present invention. As illustrated in this drawing,
Armature core 11, armature coils 12, 12, commutator 1
3. In the rotor 10 of the starting motor including the armature shaft 14, the support member 15, and the like, the outer peripheral surfaces of the armature coils 12 and 12 are directly coated with a glass fiber-based resin of a molten state, and a certain radiation and By forming the glass rings 16 having a thickness, the glass rings 16 perform the function of preventing the armature coils 12 from being detached.

On the other hand, the method of supporting the armature coil of the starting motor rotor according to the present invention includes a rotor rotating step of supporting the armature shaft 14 so as to be rotatable and rotating the rotor 10 at a predetermined speed; A resin supply step of directly applying a molten glass fiber-based resin 20, 20 directly above both sides of the rotor 10 toward the armature coils 12, 12 to be rotated; System resin 20, 2
0 is stopped, the applied glass fiber-based resin 20 in the molten state is solidified, and the armature coils 12 and 12 are solidified.
On the outer peripheral surface of the glass rings 16, 16 with a certain width and thickness.
And a glass ring forming step.

In the drawings, reference numeral 21 indicates a resin container for storing the glass fiber-based resins 20 in a molten state.

As described above, according to the present invention, first,
A resin container 21 supporting both ends of the armature shaft 14 of the rotor 10 so as to be rotatable, and containing molten glass fiber-based resins 20, 20 directly above both sides of the rotor 10. , 21 are spaced apart from each other by an appropriate distance. At this time, the discharge portions 21a, 21a formed in the lower part of the resin containers 21, 21 are positioned immediately above the armature coils 12, 12.

Thereafter, the rotor 10 is rotated at a predetermined speed, and at the same time, molten glass fiber-based resins 20, 20 are supplied from the resin containers 21, 21, and the armature coils 12,
12 is applied to the outer peripheral surface. After a lapse of a predetermined time, the molten glass fiber-based resin 20, 20 is solidified on the outer peripheral surfaces of the armature coils 12, 12, and the glass rings 16, 16 having a fixed width and thickness are formed.

At this time, since the glass fiber-based resins 20, 20 applied to the outer peripheral surfaces of the armature coils 12, 12 are in an initial molten state, the resin is between the armature coils 12, and between the armature coils 12, The armature coil 12 and the support member 15 can be firmly fixed by being immersed between the facing support members 15 and slowly solidified in such a molten state.

As described above, the present invention provides a rotor rotating stage for rotatably supporting an armature shaft of a rotor and rotating the rotor at a predetermined speed;
A resin supply step of directly applying a molten glass fiber resin toward the armature coils on both sides to be rotated,
Stopping the supply of the resin, solidifying the glass fiber-based resin in a molten state, and forming, on the outer peripheral surface of the armature coil, a glass ring at a constant width and thickness, each having a glass ring forming step. I have. In this manner, the glass ring is formed on the outer peripheral surface of the armature coil with a fixed width and thickness by the glass fiber resin in a molten state, so that the armature coil 12
The use of another coil detachment preventing member for preventing detachment of the coil can be eliminated, which can contribute to an improvement in productivity. Further, the armature coil can be positioned accurately without any assembly deviation, and the effect of preventing the coating of the armature coil from being removed or cut off, preventing the performance of the starting motor from deteriorating, and the like can be obtained.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a general starting motor rotor.

FIG. 2 is a half cross-sectional view of a rotor provided with armature coil detachment prevention means according to the related art.

FIG. 3 shows a conventional armature coil detachment prevention means.
It is a perspective view for showing the separation prevention ring used.

FIG. 4 is a half sectional view illustrating a rotor of a starting motor and a method of supporting an armature coil of the rotor according to the present invention;

[Explanation of symbols]

 Reference Signs List 1O rotor 11 armature iron core 12 armature coil 13 commutator 14 armature shaft 15 support member 16 glass ring 20 resin 21 resin container

Claims (2)

[Claims] An armature core, an armature coil, an armature shaft,
Including a support member and the like, in the rotor of the starting motor, on the outer peripheral surface of the armature coil, a glass ring having a certain width and thickness is formed on a glass fiber resin in a molten state, Starting motor rotor. 2. A rotating stage of a rotor for supporting an armature shaft of the rotor so as to be rotatable and rotating the rotor at a predetermined speed, and armatures on both sides rotated just above both sides of the rotor. Directly apply the glass fiber resin in the molten state toward the coil, in the resin supply stage, stop the supply of the resin, solidify the glass fiber resin in the molten state, and apply a fixed amount to the outer peripheral surface of the armature coil. Forming a glass ring having a width and a thickness, respectively; a method for supporting an armature coil of a rotor of a starting motor, the method comprising a glass ring forming step.