| 摘要 |
A base member of a motor includes a base through-hole extending through a bottom portion thereof. Two or more lead wires extending from coils pass through the base through-hole. Thus, as compared with a case where the lead wires pass through different base through-holes respectively, it is possible to reduce the number of the base through-holes. Accordingly, it is possible to minimize or prevent a reduction in the rigidity of the base member. Insulating sheet portions are arranged on the lower and upper surfaces of the base member. Each insulating sheet portion includes an overhang portion which overlaps with the base through-hole when seen in a plan view. The lead wires extending from the coils are led out toward the lower surface of the base member through holes, cutouts, or slits defined in the overhang portion. This makes it possible to easily distinguish the led-out lead wires from each other. |
| 主权项 |
1. A spindle motor, comprising:
a stationary unit; and a rotary unit supported to rotate about a center axis extending up and down; wherein the stationary unit includes a base member made of metal, an armature provided with a plurality of coils and positioned above the base member, and a circuit substrate arranged on a lower surface of the base member; the rotary unit includes a magnet opposed to the armature with a gap therebetween; the base member includes a ring-shaped bottom portion positioned below the armature, at least one base through-hole extending through the bottom portion and a base groove portion arranged on a lower surface of the bottom portion to extend radially outward from a lower end portion of the base through-hole; a first insulating sheet portion, which is defined by a portion of the circuit substrate or a member of the circuit substrate, is arranged on a bottom surface of the base groove portion; a second insulating sheet portion is arranged on an upper surface of the bottom portion; the first insulating sheet portion or the second insulating sheet portion includes an overhang portion overlapping with a lower opening or an upper opening of the base through-hole when seen in a plan view; a plurality of lead wires electrically connected to the coils extends from the coils; the overhang portion includes at least one hole, at least one cutout, or at least one slit, through each of which at least one of the lead wires passes, a total number of the at least one hole, the at least one cutout, or the at least one slit is two or more; and the lead wires are arranged to pass through the upper opening of the base through-hole, the overhang portion, and the lower opening of the base through-hole and are arranged to extend to the circuit substrate through the base groove portion, the lead wires connected to the circuit substrate.
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