Stator, stator manufacturing method and motor
A technology in the direction of stator and lamination, applied in the manufacture of stator/rotor body, manufacture of motor generators, magnetic circuit shape/style/structure, etc., can solve problems such as rotation of difficult-to-connect parts, increased frictional resistance, etc., to reduce frictional resistance , easy to rotate and move the effect
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[0031] figure 1 It is a sectional view of the motor 80 of this embodiment. Such as figure 1 As shown, the motor 80 includes a shaft 81 , a rotor 82 , a stator 83 , a housing 84 , a bearing holder 85 , a first bearing 86 , a second bearing 87 , an insulator 88 , a coil lead wire 89 , a coil 90 , and the like. The shaft 81 and the rotor 82 are integrally structured. The shaft 81 has a cylindrical shape centered on a central axis extending in one direction. The rotor 82 is located in the middle of the shaft 81 . The rotor 82 is rotatable relative to the stator 83 . The stator 83 is arranged to surround the rotor 82 in the axial direction. The stator 83 has a coil 90 formed by winding a conductive wire around an iron core. The casing 84 is disposed so as to fit on the outer peripheral surface of the stator 83, and accommodates the motor 80 including the shaft 81, the rotor 82, the stator 83, the bearing holder 85, the first bearing 86, the second bearing 87, the insulator 88...
example 1
[0067] Figure 8 It is a top view of the laminated member 12a which comprises the core piece 12 which is one modification of this invention. Such as Figure 8 As shown, the laminated component 12a of this modified example is the same as the laminated component 10a in the embodiment (refer to figure 2 ) compared to the circumferential ends of the shape is different.
[0068] Specifically, the laminated member 12a has an arc-shaped convex portion 21a at one end portion in the circumferential direction of the core back portion 20a. The laminated member 12a has a contact portion 23a at the other end portion in the circumferential direction of the core back 20a. In this way, the laminated member 12a of this modified example has a structure that does not have radial linear portions at both end portions.
[0069] When adopting such a structure, adjacent core pieces are in contact at one point at the ends in the circumferential direction, and the same effects as those in the embo...
example 2
[0072] Figure 9 It is a sectional view of the connection part of the core pieces 13 and 14 which are one modification of this invention. Such as Figure 9 As shown, it is the same as the core sheets 10 and 11 in the embodiment (refer to Figure 7 ) compared with the core pieces 13 and 14 of this modification in the shape of the stacking direction near the circumferential end portion is different.
[0073] Specifically, the laminated member 13a of the core sheet 13 has a lower surface protrusion 36a projecting downward from the lower surface 34a in addition to the lower surface 34a on the lower surface side of the laminated member 13a on the inner side of the circumferential direction than the end portion 32a. On the upper surface side of the laminated member 14b that overlaps with the laminated member 13a in the lamination direction of the core sheet 14 and is circumferentially inner than the end portion 32b, there is a second upper surface recessed portion 37b in a shape t...
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