JPS6027262B2 - Manufacturing method of flat armature - Google Patents

Description

[Detailed Description of the Invention] {A Field of Industrial Use] The present invention relates to a method for manufacturing a flat armature for a rotating machine, and the flat armature is suitable as a fan flat type ironless armature for a DC motor. be.

'o} Conventional technology It is known to use conventional printed wiring as a flat-shaped iron core armature, but this has a limit on the number of conductors and is unsuitable for motors driven by high voltage and small current. However, it also has the disadvantage of having many conductor connections, and a wire-wound type has been proposed as an alternative.

Examples of the wire-wound type include those shown in FIGS. 1 and 2. The unit coil 2 in Fig. 1 is a unit coil 2 in which a single coil wire 1 is sequentially wound from the inside to the outside so that they are adjacent to each other on a horizontal plane.
However, it is difficult to wind them in alignment, and one of the terminal lead-out portions 3 and 4 interlinks with the unit coil 2. In the one shown in Fig. 2, a ring 6 (see Fig. 3) is formed by winding a single coil wire 5 in an endless belt shape, and this ring 6 is bent and overlapped at six places to form a deformed rectangular fan. Create a flat pseudo isosceles triangle and connect it to the unit coil 8
(Refer to Japanese Patent Publication No. 53-23921, since it is bent at four places to make an isosceles triangle, the sides are 9.
does not contribute to torque generation, and has the disadvantage that the length of side 10 that contributes to torque generation is shortened accordingly. Problems to be Solved by the Invention The present invention has been invented in view of the above points, so that the terminal lead-out portion of the unit coil does not interlink with the unit coil, and the terminal extension portion of the unit coil is not interlinked with the unit coil, and the endless ring is connected to a substantially isosceles triangle. The present invention aims to provide a method for manufacturing a flat armature that reduces the number of bends and lengthens the coil sides when creating a unit coil.

A. Means for solving the problem In order to solve the problem, the present invention consists of the following three steps.

The first step consists of the three combs A and B located at each vertex of the triangle.
, C, one coil wire is stretched in sequence from the top A to B, from the bottom to the top from B to C, and from the bottom C to A, and each By placing successive coil wires alternately in the front and back positions of the already wound coil wires in the shank, a Möbius band-like ring with no distinction between the front and back sides is formed.

In the second step, the Maepius band-shaped ring is bent at three locations so that the overlapping portions are brought into close contact with each other to form a substantially isosceles triangular sector unit coil.

In the third step, a plurality of unit coils are arranged and fixed in a ring shape while being sequentially shifted so that the vertices formed by the substantially isosceles sides of each of the triangles are located toward the center.

Since the band-shaped ring formed in the first process is a Maeviwas band-shaped ring with no distinction between front and back sides, the number of bending parts required to form a unit coil in the second process is 3.
In this case, the triangle is formed into a substantially isosceles triangle.

In the third step, the plurality of approximately isosceles triangular unit coils are arranged and fixed in a ring shape with the apexes formed by the approximately isosceles sides of each triangle being positioned toward the center, thereby forming a plate-shaped winding. To form a body, the approximately isosceles sides of each triangle are located radially and serve as coil sides. In this way, a square triangular unit coil is formed by bending the Maepius strip ring at three points so that the overlapping parts are in close contact with each other. Therefore, the production of this unit coil is different from the conventional case shown in Fig. 2. It is simpler than , and the coil side is long even as a fan-flat armature.

N Example An embodiment of the present invention will be described based on the drawings.

The ring 11 shown in FIG. 4 forms the basis of the unit coil of the present invention, and is called a Maepius band. There is no distinction between the front and back surfaces, which is different from the solenoid ring 6 shown in FIG. 3 in which the front and back surfaces 14 and 15 can be distinguished. This Mavis strip ring 11 is formed as shown in FIG.

This drawing is an explanatory diagram showing the state in which the ring 11 is wound. Three birches A, B, and C are fixed, and the coil wire 5 is sequentially attached to three rods located at each vertex of a triangle. Wind it like this. In this case, the coil wire 5 is wound around the bamboo tree A from bottom to top, around the birch tree B from top to bottom, and around the birch tree C from top to bottom. Therefore, the coil wires are upper comrades for birch A and B, lower comrades for aya C and A,
The coil wires B and C are stacked from bottom to top, and the coil wires that follow the front and rear positions of the already wound bag coil wire are located in each coil. That is, for example, in Sashimi A, the coil wire following ■■ is located to the left of ■■ in the drawing through ■■■, and furthermore is located to the right of ■■■. In FIG. 5, the coil wires are shown in a wavy shape to clearly show the winding order, but in reality, adjacent coil wires are tightly wound to a predetermined width W so as to be close to each other. In this case, a self-fusing conducting wire is used as the coil wire to fix adjacent coil wires to form a ring 11 shown in FIG. 4. As is clear from FIG. 6, which is a front view of the unit coil, the ring 11 is bent so that the overlapping portions 16 are in close contact with each other at three locations to form a substantially isosceles triangular fan-flat unit coil 17.

In this case, when forming the Kohei unit coil 17 in which the lead-out terminals 18, 18 are located at the vertices of a substantially isosceles triangle, when the birches A, B, and C shown in FIG. are placed at each vertex of the isosceles triangle to fix the formed triangular ring 11' in that state, and after removing each shank, press from above the three bent parts of the ring 11'. A fan flat unit coil 17 may be formed. As shown in FIG. 7, the plurality of unit coils 17 formed in this manner are sequentially staggered and arranged and fixed in a ring so that each vertex 22 of the substantially isosceles triangle is located toward the center. This shows the completed state of the armature, in which a plurality of unit coils 17 are arranged and fixed in an annular manner on a reinforcing resin plate 19, and a lead-out terminal 1 is located at the apex of each unit coil 17.
8 and 18 are connected to each segment of the commutator 20 attached to the center of the resin plate 19, respectively.

21 is a rotation axis.

Effects of the Invention According to the present invention, a Möbius strip ring is formed by winding and fixing a coil wire, and a substantially isosceles triangular unit coil is formed from this strip ring. In this case, the number of bends is only three, and the triangle can be formed using three sides, so compared to the conventional case where a pseudo-triangular unit coil is formed using a deformed quadrilateral, as shown in Fig. 2. , the formation of unit coils becomes easier.

Also, since a fan-flat triangular unit coil is formed from the Möbius strip ring, like the conventional one shown in Fig. 1,
Since the terminal lead-out portion of the unit coil does not interlink with the unit coil, and a pseudo-triangular unit coil is not formed by a deformed rectangle, a unit coil with long coil sides can be formed.

[Brief explanation of drawings]

FIGS. 1 and 2 are perspective views of unit coils with different subordinates, FIG. 3 is a perspective view of a conventional ring, FIGS. 4 to 8 show an embodiment of the present invention, and FIG. 4 is a perspective view of a conventional ring. Möbius strip I
A perspective view of the J-ring, FIG. 5 is an explanatory diagram showing its winding state,
FIG. 6 is a front view of the unit coil, FIG. 7 is an explanatory diagram showing the arrangement of two unit coils, and FIG. 8 is a perspective view of the flat armature. 5... Coiled wire, 11... Ring, 16... Overlapping part, 17
．． ...Unit coil. Fig. 1 Fig. 2 Fig. 4 Fig. 5 Fig. 8 Fig. 6 Fig. 6 Fig. 8

Claims (1)

[Claims] 1. Place one coil wire around the three rods A, B, and C located at each vertex of the triangle. From A is a step of forming a Möbius strip ring with no distinction between the front and back sides by sequentially stretching the coil wires one after the other and placing the following coil wires alternately in the front and rear positions of the already wound coil wires on each rod. and a step of bending this ring at three points so that the overlapping portions are in close contact with each other to form a flat unit coil having an approximately isosceles triangular shape.
A method for manufacturing a flat armature, comprising the steps of: arranging and fixing a plurality of unit coils in a ring shape by sequentially shifting the apexes formed by the substantially isosceles sides of each of the triangles so that the apexes formed by the substantially isosceles sides of the triangles are located toward the center.