JPS5886851A - Armature coil for plane opposite type motor - Google Patents

Abstract

PURPOSE:To facilitate handling, to improve reliability and to increase efficiency by projecting a terminal pin in the single flange type armature coil from the flange section of a bobbin in the direction parallel with the axial direction of the motor. CONSTITUTION:The projecting sections 7a, 7b of the armature coil 2 are stacked onto a stator yoke 8 and a printed circuit substrate 9 onto the yoke. The terminals 6a, 6b of the coil 2 are inserted into the through holes 10a, 10b of the substrate 9, and projected up to the upper surfaces of circuit patterns 9a, 9b. The circuit patterns 9a, 9b and the terminal pins 6a, 6b are fixed through soldering, etc. According to such simple constitution, handling is facilitated, reliability is improved, efficiency is increased and the coil can be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an armature coil for a plane-opposed DC brushless motor used for driving the head drum of a video tape recorder.

This plane-opposed M-1 knee voice has a rotor that is a ring-shaped permanent magnet magnetized in sections along the circumferential direction, and a stator consisting of a plurality of armature coils facing the magnetic pole surface of the rotor. The motor has a configuration in which the magnetic gap is vertically arranged along the axial direction of the motor, and has the advantage of being thin and capable of generating a relatively large amount of torque. As the armature coil of this flat opposed steel motor, which has come to be widely used in equipment, for example, a bobbinless coil as shown in FIG. 1 has conventionally been used.

In this figure 91, 1 is an armature coil, 1a.

1b is a terminal lead wire.

This Kyle 1 uses a self-bonding wire that is made by laminating a face-shaped insulating film such as polyurethane and an adhesive film on the surface of a core wire such as copper wire, and this is coated with alcohol in the winding process using an appropriate jig. The adhesive film is dissolved by applying a solvent such as the like, and the pieces are adhered to each other during or after winding, and then removed from the jig.

The armature coil 1 has been widely used in the past because nothing other than the armature coil is present in the magnetic gap 2 of the motor, resulting in efficient motor control.

Incidentally, such armature coils have conventionally been wound using an automatic winding machine, but at that time, the terminal lead wire 18 at the beginning of winding 10 of the coil is wound around the coil side IC as shown in Figure 111. Since the coils must be crossed and pulled out, there is sufficient space7 for the side coils.
The drawback was that actors could not be obtained.

In the case of conventional armature coils, installation is carried out using methods such as bonding or directly adhering to the printed circuit board, but for this reason, jigs and the like are required for positioning and placement during installation. However, the disadvantage was that assembly costs tend to increase.

Therefore, in order to eliminate the drawbacks of the conventional bobbinless type armature coil shown in Fig. 3911, a 7-piece lunge type bobbin commonly used armature coil as shown in Fig. 142 was proposed.

In FIG. 2, 2 is a coil, 25t2b is a terminal lead wire, 3 is a bobbin, 3a is a 7-rank portion, 3b is a notch, and 3c is a protrusion.

According to this armature coil, there is a drawback that the magnetic gap of the motor becomes longer by the thickness of the 7-rank part 3a, but the notch part 3b allows the terminal lead wire 2
Since the relief for the armature coil 8 is formed, the coil 2 is prevented from being wrapped, and no jig is required in the winding process, which eliminates the above-mentioned drawbacks of the conventional armature coil. Since the coil 2 is protected by the 7-rank part 3g, it is easy to handle the coil alone, and by forming a protruding sac, there are advantages such as easy positioning when installing the coil. .

1 However, in the conventional armature coils shown in FIG. 3111 and FIG. Therefore, during Tanabata assembly, it is necessary to attach multiple armature coils to predetermined positions on the stator, and then connect these terminal lead wires to the predetermined (b) path pattern on the pre-sheeted circuit board. Therefore, (1) It is difficult to automate the work of routing the terminal lead wire from the armature coil to the circuit pattern and then connecting it using Ushida attachment, etc. Therefore, it has to be done manually, which is inefficient.

(Neglect) It is difficult to miniaturize the motor because it is necessary to provide a space for routing a large number of terminal lead wires from a plurality of armature coils to the enclosure base.

Since a considerable length of terminal lead wire is led out from the armature coil, it is troublesome to handle the armature coil as a single unit during Tanabata assembly, and the 11 terminal lead wires may become entangled with each other. Inconveniences such as coil unwinding or wire breakage are likely to occur.

(4) Product defects are likely to occur due to incorrect wiring during connection work such as routing terminal lead wires and attaching wires, making it impossible to obtain sufficient reliability.

There were many drawbacks such as.

Therefore, in order to overcome these drawbacks, Fig. 3 and 94
An armature coil as shown in the figure was proposed.

That is, in the armature coils shown in FIG. 3 and FIG.
8.4b, these terminal pi>4814b &
: Koi/I/2 terminal! J-to112 G, 2
b is wound and soldered.

In addition, in these figures #13 and 14, arrow 5 indicates the direction of the field magnetic flux due to the rotor magnet.
In such a planar opposed type motor, the direction is parallel to the axial direction. Moreover, the arrow indicates the minimum outer diameter required for armature coil arrangement.

Although the armature coils 1 to 1 shown in Figures 13 and 14 can overcome the drawbacks of the armature coils shown in Figures 1 and 2, they also have the following drawbacks: There is.

That is, in the armature coil shown in Fig. 113, the terminal pin 4G*4b protrudes outward in the diametrical direction of the motor from the 7-rung portion 3G, so the outer diameter of the motor is necessary for arranging the armature coil. The outer diameter is considerably larger than the minimum outer diameter, making it easy to increase the size of the motor.

In addition, in the armature coil of FIG. 4, the terminal pin 46
*Since the terminal pins 4b protrude in the direction of the motor's circular layers, there is no risk that the outer diameter of the motor will become larger. Since a printed circuit board must be installed in the motor, the magnetic air gap of the motor becomes longer, reducing efficiency.

In addition, all of the armature coils shown in FIGS. Since the work for this needs to be done completely independently, there is a drawback that the cost tends to increase.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional technology, to make the filter itself easy to handle, to eliminate the risk of miswiring, and to minimize the increase in motor size and magnetic gap length. Moreover, it is an object of the present invention to provide an armature coil for a plane-opposed motor in which connection and attachment of the armature coil can be performed by exactly the same means.

In order to achieve this object, the present invention provides an armature coil wound around a 7-rung type bobbin, in which a terminal pin is protruded from the 7-rung portion of the bobbin in a direction parallel to the axial force direction of the motor. Hereinafter, embodiments of the armature coil of a planar opposed motor according to the present invention will be described with reference to the drawings.

FIG. 5 shows an embodiment of the present invention, in which the coil 2. Terminal lead wire 2 (L, 2 b *Bobbin 3. The flange portion 3G etc. are the same as the conventional example shown in Figures 2 to 4. In Figure 5, 5g and 6b are terminal pins, and 7's7b is a protrusion. Part, 8 is a solid spacer board, 5at8b is a through hole, 9 is a printed circuit board, 9't9bG is a circuit pattern, 10cz
+10bG through hole.

A short or ν1 cylindrical protrusion 7G*7b is formed on the upper surface of the 7 rung part 3G of the bobbin 3, and a terminal pin 6G* made of a metal that can be soldered, for example, a metal such as a copper alloy, is formed on this part. 6b car installed & destroyed and revived.

The terminal pin 6'6+6b is provided so as to protrude from the upper surface of the seven rung portion 38 along the field magnetic flux direction 5 of the motor, that is, the same direction as the axial direction of the motor.

The coil 2 is made by winding the terminal lead wire 2a on the winding start side around the terminal pin 6α several times, then winding it around the bobbin 3 for a predetermined number of turns, and winding the terminal lead wire 2b on the winding end side around the terminal pin 6b. It is formed by attaching it. At this time, it goes without saying that winding may be performed using an automatic winding machine in the same manner as conventional coils. Also, this lI45Ii! ! Although it is not clearly shown in I, in this embodiment as well, the terminal lead wire 2a on the winding start side of the coil 2 intersects with the side surface of the coil.
It is desirable to provide a notch in the seven rung portion 3cL, or provide an escape groove for the lead wire, as in the conventional example shown in FIGS. 2 to 4. Similarly, the cylindrical protrusion 7G
, 7b, the terminal lead wire 2at2b crosses the side of the sheep and is wound around the terminal bis 6α, 6b, so it is necessary to provide an escape groove or the like in this part]j! Needless to say, there are many.

The fixed consonant 8 is made of a magnetic material such as iron, and has a hole satgb into which the protrusion 7at7b fits into a predetermined position.
is provided.

A predetermined circuit pattern 9819b for the armature coil is formed on the printed circuit board 9, and a through hole 10 into which the terminal pin 6G*6b of the armature coil is inserted is formed.
1StlOb is provided.

Further, the height of the cylindrical protrusions 7G and 7b formed on the 7 rungs 3a of the armature coil is approximately equal to the thickness of the stator loaf 8, or is made to be much smaller than that. It is formed to fit into the through hole 8αt8b of the hard cover 8 accurately and with almost no play.

Therefore, when assembling the stator of the motor by integrating the armature coil 2, stator loaf 8, and printed circuit board 9, it is necessary to assemble the protruding part of the armature coil 2 as shown in Figure #1IIs. The terminal pins 5g and 5b of the coil are inserted into the through holes 8a and 8b of the 1S and 7bt national standard yoke 8, and the printed circuit board 9 is stacked on the electronic yoke 8.
0 through hole 10a.

10b (so that it protrudes to the top surface of the gIN patterns 9α, 9b, and then the circuit patterns 9α, 9
b and the terminal pins 6a, 6b are fixed by soldering or the like.

As a result, the armature coil 2 has protrusions 7a and 7b formed on the 7th rung portion 3a of the bobbin 3.
By fitting into the 80 through holes 8cL and 8b, the terminal pins 6a and 6b were accurately positioned relative to the stator seal 8, and the terminal pins 6a and 6b were soldered to the circuit patterns 9cL and 9b of the printed circuit board 90. As a result, the armature coil 2 can be firmly fixed, and the positioning, mounting, and connection of the armature coil 2 can be performed almost in a single operation.

Incidentally, at this time, an adhesive or the like may be applied to the portion of the armature coil 2 where the seventh rung portion 3α meets the locking lug 8.

Therefore, in this embodiment, the terminal lead wire is not drawn out when the armature coil is alone, so there is no need to route the terminal lead wire as in the conventional armature coil, and the work efficiency is greatly improved. Not only can the motor be improved, but the motor can also be made smaller because no extra space is required for routing the terminal lead wires. In addition, there is no need to worry about incorrect wiring that occurs during the process of routing and soldering the terminal lead wires as in the past, improving reliability. There will be no more entanglements or rumors of misalignment.

Furthermore, in this embodiment, the terminal pins 6 a + 6 b
Since it is provided protruding parallel to the axial direction of the motor, the E-type coil can be handled in the same way as other circuit components mounted on the printed circuit board 9, and can be connected to the circuit patterns 9a and 9b. Fixing can be done simultaneously and easily by soldering.

In addition, according to this embodiment, the armature coil and the
There is only the 7 rung part 3a of the bobbin in the magnetic path between the I and the printed circuit board 9, which is out of the magnetic path, so the field magnetic flux gap length is shortened by that amount. In this way, fJ- can be achieved, and the decrease in efficiency as a motor can be kept to a very small extent.

In addition, according to the above embodiment, since the cylindrical protrusions 7a+7b are provided on the 7 rungs 3a of the bobbin, the armature coil can be positioned sufficiently accurately without using a jig or the like.
Moreover, it is extremely easy to carry out, and the cost of assembling the motor can be reduced.

As explained above, according to the present invention, the terminal pin of the armature coil of the 7-lunge type is made to protrude from the 7-lung portion of the bobbin in a direction parallel to the axial direction of the motor. It is possible to provide an armature coil that can be easily handled as a single unit, has high reliability, is highly efficient, and can provide a small, low-cost planar opposed motor.

[Brief explanation of drawings]

Figures 1 to 94 are perspective views showing conventional examples of armature coils for a flat-opposed motor, respectively, and Figure 5 is an exploded perspective view showing an embodiment of the armature coil for a flat-opposed motor according to the present invention. 0 1...-Armature coil, 2ap2b...Terminal lead wire, 3...Bobbin, 3a...7
Rung part, 5...Field magnetic flux direction, 6α+6b・
...Terminal bin, 7a. 7b... Protrusion, 8... Stator yoke, 86*8b... Through hole, 9... Printed circuit board, 9a. 9b...Circuit pattern, 1oatxob...
...Penetration? 1F2T Sai 2 scolding

Claims (2)

[Claims] (1) In the armature pulley of a plane-opposed M motor that is wound around a bobbin, there are seven rungs formed on the bobbin and at least one armature pulley that is attached so as to protrude from the seven rungs in parallel with the axial direction of the motor. An armature coil for a plane-opposed sweater, which includes two metal members, and the terminal pins of the armature coil are configured by the metal members. (2) In claim 11/41, a protrusion is formed in a portion of the seven rung portion to which the at least two metal members are attached, and these at least two protrusions form the seventh rung. 1. An armature of a plane-opposing type sweater, characterized in that the armature is attached to the stator rotor in such a manner that positioning is performed at the same time. (Xun Claim W! 1 or 1182, in which at least two metal members are formed so that they can be directly soldered to the circuit pattern of a printed circuit board via a stator yoke, and these metal members are ′ for the circuit board
1. An armature coil for a plane-opposed sweater, characterized in that at least a part of the armature coil mounting means for the Tanabata stator yoke is formed by soldering.