JPH0352528A - Stator core - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a stator core for electric motors, and in particular to a stator core suitable for minimizing damage to the coating of a magnet quill and improving shaft stability. Regarding.

[Conventional technology]

Regarding the conventional stator core which is divided into teeth parts and yoke parts and laminated, as described in Japanese Utility Model Publication No. 62-1 6746, a light load type with a single slot shape for winding a toroidal coil is proposed. A practical example is a motor.

[Problem to be solved by the invention]

The above conventional technology is often seen in light-load small motors, such as small 7-amp motors, and has high efficiency. The present invention was not intended for high output.The present invention is applicable to single-phase induction machines, which are used in many home appliances, and in particular to motors that use a distributed winding method where the number of conductors inserted into each slot is not the same. , and in motors in which magnet wires of different wire diameters are wound in the same core, the space inside the slot is improved,
The purpose is to achieve high efficiency and high output ● [Means to solve the problem] The above purpose is to reduce the number of conductors in slot parts with a small number of conductors and magnets with different wire diameters. In a motor using a wire, this can be achieved by reducing the area of the scrot into which the magnet wire with a small diameter is inserted, that is, the space area formed by the yoke and teeth.

The above-mentioned means for reducing the space area is to change the shape of the portion of the yoke portion that forms the slot portion, in other words, the area of the pack height portion, depending on the application of the motor.

[Effect]

By changing the pack height area of the yoke,
The slot area is changed to improve the space occupied by the conductor in the slot.

As mentioned above, in order to improve the space factor in the slot, the ineffective area in the slot can be reduced, and the reduced area can be converted to the pack height section to secure the effective magnetic path area, resulting in higher efficiency and higher efficiency. Output can be achieved.

〔Example〕

Below, an embodiment of the present invention is shown in FIG. Figure 2. This will be explained with reference to IR5 diagram and FIG.

Fig. 1 is a combination diagram of a stator core for a single-phase induction machine equipped with an embodiment of the present invention, Fig. 2 is a single view of the yoke portion of the ts1 diagram, and Fig. 3 is a single view of the teeth portion of Fig. 1. ◎ Figure 4 is a partially enlarged view of Figure 1.
is the stator core, 2 is the yoke part, and 5 is the teeth part. 4 is a large sloft}, 5q is a small sloft, 6 is a fitting part between the yoke part and teeth part, 7 is a main coil, 8 is an auxiliary coil, 21 is a part with a large inner diameter of the yoke part, 22 is a part with a small inner diameter of the yoke part. To manufacture the υ stator core 1 having such a configuration, first, as shown in FIGS. 2 and 3, magnetic materials divided into a yoke portion 2 and a teeth portion 5 are laminated and fixed. At this time, the teeth portion 3 is formed by connecting a portion that becomes the inner diameter of the stator, forming a ring shape, and integrating a plurality of teeth.

The housing, yoke part 2 and teeth part 3 are connected to the fitting part 6.
(4) Form the stator core 1.

In order to manufacture a motor using this (auto) stator core 1, the radial openings of the laminated and fixed teeth portions 3 are arranged in an M configuration, and the coils are wound in the radial openings and in the slots. The single-phase induction machine shown in this embodiment uses magnet wires with different wire diameters. 6. Since the coil with a large diameter wire and a large coil volume is used as the main coil 7, and the coil with a small diameter wire and a small coil volume is used as the auxiliary coil 8, the insertion slot of the auxiliary coil 8 can be made smaller in slot area than the insertion slot of the main coil 7. . For this reason, the inner diameter of the yoke portion 2 having the slot-shaped outer shape is set to 2aI class, and the area of the slot formed in the portion 22 having a small inner diameter can be made small. Inserting an auxiliary coil 8 with a small coil volume into the slot portion 4, which has a small area, has the effect of improving the space factor within the slot.Additionally, depending on the size of the slot area, the teeth themselves may not fit properly. Even if the teeth have different contact lengths when mating, there is no risk of the teeth bending or tilting because all the teeth are connected and mutually strengthened at the inner diameter of the teeth.

〔Effect of the invention〕

According to the present invention, since the slot space factor can be increased, the effective magnetic path area of the stator core can be secured and efficiency can be improved. 0 has the effect of providing a high output O-leg stator core.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a stator core equipped with an embodiment of the present invention, FIG. 2 is an explanatory diagram of the yoke portion of FIG. 1, FIG. 5 is an explanatory diagram of the teeth portion of FIG. 1, and FIG. is a partially enlarged view of FIG. 1 0 1... Stator core, 2... Yoke part, 3... Teeth part, 4... Large slot part, 5... Small slot part, 6... Fitting portion % 7... Main coil, 8... Auxiliary coil, 21... Portion with large inner diameter of yoke part, 22...
A part with a small inner diameter of the yoke.

Claims (1)

[Claims] 1. In the stator core of an electric motor, which is formed by laminating and fixing magnetic materials, the individually laminated yoke part that becomes the pack height and the part that becomes the inner diameter part of the stator are connected to form a plurality of annular radial shapes. A fixation characterized in that the space formed by the combination of teeth parts, that is, the area of the slot part, is made into two or more types within a single core by fitting together the teeth parts and changing the inner diameter of the yoke part. Child iron heart.