Wound core, electromagnetic component and manufacturing method therefor, and electromagnetic equipment
a technology of electromagnetic components and manufacturing methods, applied in the direction of manufacturing stator/rotor bodies, magnetic cores of magnetic circuits, transformers/inductances, etc., can solve the problems of increasing the number of times of processing for making cores having the same dimensions, increasing the cost, and reducing the manufacturing cost. , the effect of reducing the loss of eddy current and hysteresis
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first embodiment
[0042]In the description of First embodiment, a cylindrical wound core will be taken as an example of the core.
[0043]FIG. 1 is a perspective view (left of FIG. 1) of the cylindrical wound core in First embodiment and a front view (right of FIG. 1) thereof. As illustrated in FIG. 1, the spiral cylindrical core 100 in First embodiment is not continuous from the start of winding to the end of winding and is cut in multiple places. The cut portions (100a, 100b, 100c) are not located in an identical position in the radial direction but they are randomly arranged.
[0044]To join the areas before and after each cut portion (100a, 100b, 100c), any of the methods illustrated in FIG. 2 to FIG. 4 can be used. In the example of FIG. 2, at the cut portion 100a, the inner radius-side magnetic member (for example, magnetic thin band 101) and the outer radius-side magnetic member (for example, magnetic thin band 102) adjoin to each other. Thus a non-overlap method is used. Randomly arranging the cut ...
second embodiment
[0061]In relation to Second embodiment, description will be given to the manufacture of a trapezoidal wound core with reference to FIG. 8 to FIG. 11. FIG. 8 is a perspective view of the trapezoidal wound core in Second embodiment and a front view thereof. The comparison of the trapezoidal wound core in FIG. 8 with the cylindrical wound core in FIG. 1 reveals the following: they are different only in that the cross-sectional shape is trapezoidal or circuit and they are identical in that cut areas 111a are provided in arbitrary directions.
[0062]FIG. 9 illustrates an example of a jig for forming the trapezoidal wound core in FIG. 8. The forming jig is made up of two dies 20a, 20b. FIG. 9 shows the two dies 20a, 20b in such positions that their opposite surfaces 20a1, 20b1 are visible for helping understanding. The opposite surfaces 20a1, 20b1 are provided with core placement cavities 114a, 114b, positioning pins 112, and positioning holes 113. The two dies 20a, 20b are moved by externa...
third embodiment
[0079]In relation to this embodiment, description will be given to an example of a rotary machine to which a trapezoidal wound core obtained according to Second embodiment is applied with reference to FIGS. 12 to 15. In the description of this embodiment, an axial gap motor will be taken as an example. However, this embodiment is also applicable to other types of motors, for example, radial gap motors, toroidal motors, and the like.
[0080]FIG. 12 illustrates one slot of the stator of a motor. In this example, a coil 116 is placed around a trapezoidal wound core 111 formed of cut thin bands according to Second embodiment and the assembly is taken as one slot of the stator. The trapezoidal wound core 111 and the coil 116 are insulated from each other. In the above description, the cross-sectional shape of the core is trapezoidal but this is not indispensable. The core can be formed in any desired shape, such as a circle, an oblong, a triangle with rounded corners, and the like. It is d...
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Abstract
Description
Claims
Application Information
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