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JP-7854926-B2 - stata

JP7854926B2JP 7854926 B2JP7854926 B2JP 7854926B2JP-7854926-B2

Inventors

  • 鈴木 友久

Assignees

  • ミネベアミツミ株式会社

Dates

Publication Date
20260507
Application Date
20221213

Claims (5)

  1. A conductive member having a spiral winding and a strip-like outer shape, An annular case for housing the conductive member, The device comprises a magnetic material passing through the aforementioned annular case, The inner surface of the case is provided with a plurality of fitting portions in the winding axis direction of the conductive member, The conductive member has a plurality of fitting portions in the winding axis direction of the conductive member. stata.
  2. The aforementioned case contains a resin component, The resin member covers a part of the conductive member. The stator according to claim 1.
  3. The fitting portion on the inner surface of the case is a protrusion extending in the winding axis direction of the conductive member, The fitting portion of the conductive member is a hole, The protruding portion is located inside the hole. The stator according to claim 1.
  4. The magnetic material comprises a first portion extending in the winding axis direction of the conductive member and a second portion extending in a direction away from the first portion. In the winding axis direction of the conductive member, the second portion of the magnetic material and the outer surface of the case facing the second portion of the magnetic material are fitted together. A stator according to any one of claims 1 to 3.
  5. The fitting portion on the outer surface of the case facing the second portion of the magnetic material is a protrusion extending in the winding axis direction of the conductive member, The fitting portion of the second part of the magnetic material is a recess, The protruding portion is located within the recess. The stator according to claim 4.

Description

This invention relates to a stator. As motor power output increases, technologies such as edgewise coils, which allow for a larger cross-sectional area, and flat plate coils with a similar shape are known to accommodate the increased power. Flat plate coils are positioned on the stator's magnetic material, for example, by being inserted into a bobbin. Japanese Patent Application Publication No. 11-97270Japanese Patent Publication No. 2004-274965 Figure 1 is a perspective view showing an example of a segmented core attached to a stator core in an embodiment.Figure 2 is a perspective view showing an example of a divided core in an embodiment.Figure 3 is a perspective view showing an example of a divided core in an embodiment.Figure 4 is an exploded perspective view showing an example of a divided core in an embodiment.Figure 5 is an exploded perspective view showing an example of a divided core in an embodiment.Figure 6 is a perspective view showing an example of a segmented core in the first modified example.Figure 7 is an exploded perspective view showing an example of a segmented core in the first modified example.Figure 8 is an exploded perspective view showing an example of a segmented core in the first modified example.Figure 9 is a perspective view showing an example of the process of attaching the coil to the housing in a second modified example.Figure 10 is a perspective view showing an example of a segmented core in a second modified example.Figure 11 is a cross-sectional perspective view showing an example of a segmented core in a second modified example.Figure 12 is a perspective view showing an example of the process of attaching the coil to the housing in a third modified example.Figure 13 is a perspective view showing an example of a coil housed in a housing in a third modified example.Figure 14 is an enlarged perspective view showing an example of the engagement portion of the coil housed in the housing in a third modified example. The embodiments of the stator disclosed in this application will be described in detail below with reference to the drawings. Note that the dimensional relationships and ratios of the elements in the drawings may differ from those in reality. There may also be differences in dimensional relationships and ratios between drawings. In some drawings, for the sake of clarity, a coordinate system may be shown in which the direction in which the shaft 99 (described later) extends is defined as the axial direction, and the radially outer direction of the rotor 91 (described later) is defined as the positive direction. [Embodiment] First, the stator in this embodiment will be described using Figure 1. Figure 1 is a perspective view showing an example of a segmented core attached to the stator core in this embodiment. As shown in Figure 1, the motor 1 in this embodiment comprises a stator 80 and a rotor 91. The motor 1 is a so-called inner rotor type motor in which, for example, the rotor 91 is arranged radially inward relative to the stator 80. The motor 1 is also housed in a frame, for example (not shown). The rotor 91 is rotatably mounted in the motor 1 around the shaft 99, which is the axis of rotation. The rotor 91 comprises the shaft 99, a rotor yoke (yoke), and a magnet (not shown). The shaft 99 is the axis of rotation and is formed in a cylindrical shape at the innermost radial point of the rotor 91. The rotor yoke is formed in a cylindrical shape from a magnetic material such as iron. The inner circumferential surface of the rotor 91 is positioned to contact the outer circumferential surface of the shaft 99. The stator 80 comprises a stator core 81 and a plurality of segmented cores 2. The stator core 81 is an annular member formed by stacking multiple magnetic materials, such as stainless steel or magnetic steel sheets, in the axial direction. As shown in Figure 1, a plurality of recesses 84 are formed on the inner circumferential surface of the stator core 81, recessed radially outward. Each of the multiple segmented cores 2 is fixed to a recess 84 in the stator core 81. Although only one segmented core 2 is shown in Figure 1, for example, each of the 12 segmented cores 2 can be housed in one of the 12 recesses 84 shown in Figure 1. As shown in Figures 2 and 3, the divided core 2 in this embodiment comprises a magnetic material 10, a case 20, and a coil 50. Figures 2 and 3 are perspective views showing an example of the divided core in this embodiment. Figure 2 shows the divided core 2 viewed from the negative radial side, i.e., from the inside, while Figure 3 shows the divided core 2 viewed from the positive radial side, i.e., from the outside. As shown in Figures 4 and 5, the coil 50, as a conductive member, has a spirally wound, strip-shaped outer shape 54. Figures 4 and 5 are exploded perspective views showing an example of a divided core in the embodiment. Figure 4 shows each member constituting the divided core 2 as viewed from the negative radial side, i.e.,