JPS5951227B2 - Rotor of flat plate motor - Google Patents

Description

[Detailed description of the invention] The present invention relates to a rotor for a flat plate motor.

In the rotor used in the conventional flat plate motor, as shown in Fig. 4, the winding start coil end a' of each three-segment coil 8' connected to each segment is self-winding by forming and pressurizing the coil 8'. When hardening the fusion coil, the wound coil 8
′ will overlap.

Therefore, the coil end a' at the beginning of winding is 1 as shown in the figure.
If the coils 8' of a segment are formed from the inside to the outside and overlap the wound coils, it is possible to press and align the coils 8' of one segment, or to align the coils 8' of a segment, or the commutator segment 5', rotor shaft. 10', etc., there was a disadvantage that the pressure would easily cause a layer short in the coil 8'.

Furthermore, when connecting adjacent coils 8', 8', there is a step of connecting the winding end b' of one coil 8' and the winding start end a' of the other coil 8' by twisting them. The problem was that it was necessary.

It is an object of the present invention to improve the above-mentioned drawbacks, to prevent the winding start end from overlapping the unwound coil portion, and to provide a rotor for a flat plate motor that is easy to manufacture.

The present invention will be described in detail below with reference to the drawings.

FIGS. 1A to 3C to 3A and 3B show an embodiment of the present invention.

In these figures, 1 is a commutator, and this commutator 1 is formed by stretching Cu foil on an insulating plate 2 made of epoxy material or the like, and has an odd number of commutators extending radially outward from the center. Odd number of commutator segments 5 through slits 4
is formed by division.

Arms 6 extending horizontally with respect to the commutator segment 5 are integrally formed at both ends near the tip 5a of each commutator segment 5, and the tips of the arms 6 extend upward. The cheeks are bent at right angles.

Reference numeral 7 denotes a coil support piece made of an insulator, which is disposed so as to bridge the pair of arm parts 6, 6 formed on opposite sides of adjacent commutator segments 5, 50, and has an elliptical shape around the periphery. The outer surface and both ends of the coil support piece 7 are formed into an arc shape so that the coil 8 can be placed thereon.

Both ends of the coil support piece 7 are provided with opposing arm portions 6, 6, respectively.
It is electrically and mechanically connected to the bent portion of the plate through a Cu material.

The arm portion 6 is made of a Cu material such as a Cu plate or Cu foil, and the thickness of the horizontally extending portion is approximately the same as that of the insulating plate 2, and the bottom surface of the arm portion 6 and the bottom surface of the coil support piece 7 are formed of the insulating plate. It is formed so that it is flush with 2 (Fig. 1 I~
(see c).

Therefore, when winding the self-fused wire around the coil support piece 7 to form the coil 8 around it, first coil end a at the beginning of winding is connected to one end of the coil support part 7 on the commutator segment 5 side. The coil is connected and fixed to the Cu surface of the portion 7a by soldering or welding, and then the desired number of turns n is attached to the coil support base 7 and wound around it in the direction of the arrow, so that the end of the coil at the end of the winding is adjacent. A one-segment coil 8 is formed by connecting to the tip end 5a of the commutator segment 5 on the other side by means such as soldering (see FIG. 2, A).

Similarly, by winding the self-fusing wire around the other two coil support pieces 7, 7, the 3-segment coils 8, 8
is formed.

Figure 3A shows the rotor 9 of the present invention constructed in this way, with a rotor shaft 10 provided in the center;
A bushing 11 is provided around the bushing 1.
A commutator 1 as described above having a coil 8 wound in an elliptical shape is disposed around the commutator 1 .

As described above, according to the present invention, each commutator segment 5, 5
The winding start end of the coil 8 provided in between is electrically connected to the end of the coil support 7 by Cu material, etc., and the winding end of the coil 8 is connected to the tip of the adjacent commutator segment 5. Because of this structure, the winding start end is not overlapped with the coil 8 that is formed by being wound around the coil support base 7, which reduces accidents such as coil short circuits, and This has the advantage of eliminating defective products and improving rotor manufacturing efficiency.

In addition, the process of twisting the winding start ends and winding ends of adjacent coils as in the conventional example is no longer necessary, and the coil support base 7, which is integrally connected to the commutator segment 5 through the arm part 6, is directly connected to the coil support base 7. Since the coil 8 is formed by winding the self-fusion wire, there are effects such as ease of forming the coil 8.

5 to 7 show other embodiments of the invention.

This embodiment is characterized in that a space is provided in the coil support piece 7 to insert the laminated iron plate 12, and the laminated iron plate 12 is provided within the space.

With this configuration, an iron piece made of laminated iron plates 12 is placed inside the winding coil 8, and when the rotor 9 with this configuration is housed in a stator yoke (not shown), the magnetic flux This has the advantage that the remoter has a large torque constant that easily passes through the coil, and the remoter torque becomes strong.

Note that the other configurations are substantially the same as those of the previous embodiment.

8 to 10 show still another embodiment of the present invention, in which the coil support piece 7 is made of a dielectric material, and the arm part made of Cu material protrudes from the commutator segment 5. 6 are connected to both ends of this dielectric to form electrodes, and the coil support piece 7 itself is used as a surge absorbing element.

In this case, the surge generated by a brush (not shown) running in sliding contact between the slits on the commutator surface is absorbed by the surge absorbing element, so there is an advantage that the commutator surface can be protected.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention, Figure 1A is a plan view showing the manufacturing process of the rotor of a flat plate motor according to the present invention, and Figure 0 is a side view of Figure A. Explanatory drawings, Figure C is a cross-sectional view taken along the line A-A' in Figure A, Figure 2 A is a plan view showing the manufacturing process of the present invention, Figure 0 is a cross-sectional view taken along the line A-A' in Figure A, and Figure 3 A is a plan view of the rotor of the present invention, and Fig. 0 is A-
A cross-sectional view taken along the line A'; FIG. 4A is a plan view showing a conventional rotor;
0 is a sectional view taken along the line AA', FIGS. 5 to 7 are other embodiments of the present invention, and FIGS. 8 to 10 are still other embodiments of the present invention. 1... Commutator, 2... Insulating plate, 3...
...Cu foil, 4...Slit, 5...
...Commutator segment, 6...Arm, 7...
... Coil support piece, 8 ... Coil, 9 ...
...Rotor, 10...Rotor shaft, 11...
... Bushing, 12 ... Laminated iron plate.

Claims (1)

[Claims] 1. Arms made of a conductive material are provided on both sides of each commutator segment divided into odd numbers by slits, and are provided so as to face opposite sides of adjacent commutator segments. A coil support is provided between the arm parts, a coil winding start end is connected to an end of the coil support on the commutator segment side, and a coil wire is wound around the coil support. A rotor for a flat plate motor, which is formed by forming a coil, and connecting the winding end of the coil to another adjacent commutator segment. 2. The coil support base is made of an insulating material.
The rotor of the flat plate motor described in . 3. A rotor for a flat plate motor according to claim 1, wherein a laminated iron plate is embedded in a coil support base. 4. The rotor of a flat plate motor according to claim 1, wherein the coil support comprises a surge absorbing element.