Motor

Patent metadata

Field	Value
Publication number	US-12592600-B2
Application number	US-202118249261-A
Country	US
Kind code	B2
Filing date	Oct 22, 2021
Priority date	Oct 23, 2020
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

In a motor of an embodiment, an insulator includes a wall part having two recess parts (an insulator-side first recess part and an insulator-side second recess part) opposed to two drawing positions of a conducting wire drawn out from a coil in a radial direction. One of the two drawing positions is located at an outer peripheral portion of the coil, and the other is located at an inside of the outer peripheral portion. A substrate includes a substrate-side first recess part and a substrate-side second recess part recessed at an inside in the radial direction from an outer peripheral end and adjacent to each other in a circumferential direction. The substrate-side first recess part is opposed to the insulator-side first recess part, and the substrate-side second recess part is opposed to the insulator-side second recess part.

First claim

The invention claimed is:

1 . A motor comprising:
a stator including a magnetic body, an insulator surrounding the magnetic body, and a coil formed of a conducting wire wound around the magnetic body via the insulator; and a substrate having an annular shape and provided at the stator, wherein of two drawing positions of the conducting wire drawn out from the coil, one drawing position is at an outer peripheral portion of the coil and the other drawing position is at an inside of the outer peripheral portion, the substrate includes a first recess part and a second recess part recessed at the inside in a radial direction from an outer peripheral end and adjacent to each other in a circumferential direction, the insulator includes a wall part located at an outer peripheral side of the substrate in an assembled state with the substrate assembled to the stator, the wall part includes a third recess part opposed to one of the two drawing positions of the conducting wire and a fourth recess part opposed to the other of the two drawing positions of the conducting wire, the first recess part is opposed to the third recess part, and the second recess part is opposed to the fourth recess part.

2 . A motor comprising:
a stator including a magnetic body, an insulator surrounding the magnetic body, and a coil formed of a conducting wire wound around the magnetic body via the insulator; and a substrate having an annular shape provided at the stator, wherein the insulator includes a wall part located at an outer peripheral side of the substrate in an assembled state with the substrate assembled to the stator, and the wall part includes an inclined surface inclined from an inside to an outside in a radial direction toward a drawing direction of the conducting wire in the assembled state.

3 . The motor according to claim 1 , wherein
the insulator includes an accommodation part including an outer peripheral surface wound around with the conducting wire and accommodating the magnetic body inside, a position in the circumferential direction of one of the third recess part and the fourth recess part is located at a position overlapping one of a pair of the outer surfaces opposing each other in the circumferential direction among the outer peripheral surface of the accommodation part when viewed from the radial direction, and a position of the other recess part in the circumferential direction is shifted to a position at an outside in the circumferential direction when viewed from the radial direction with respect to the other of the pair of the outer surfaces opposed to each other in the circumferential direction.

4 . A motor comprising:
a coil formed of a conducting wire; and an insulator including an outer surface surrounded by the coil, wherein the outer surface of the insulator includes a plurality of recess parts and a flat surface, and parts of the conducting wire opposed to the flat surface are spaced from parts of the conducting wire fitted into the plurality of recess parts, other parts of the conducting wire stacked at parts of the conducting wire opposed to the flat surface are disposed at an inside in the circumferential direction with respect to other parts of the conducting wire stacked at parts of the conducting wire fitted into the plurality of recess parts.

5 . The motor according to claim 4 , comprising:
a plurality of insulators including the insulator; and a plurality of coils including the coil, wherein parts of the conducting wire opposed to two of the flat surfaces of two adjacent of the insulators oppose each other in a circumferential direction.

6 . The motor according to claim 4 , wherein
the coil includes an even number of layers formed of the conducting wire.

7 . A motor comprising:
a stator including a magnetic body and a conducting wire wound around the magnetic body; and a substrate having an annular shape provided at the stator, wherein the substrate includes a first recess part and a second recess part recessed at an inside in a radial direction from an outer peripheral end and adjacent to each other in a circumferential direction, and of two end parts of the conducting wire, a first end part is located at an inside of the first recess part, and a second end part is located at an inside of the second recess part, and the first end part and the second end part are disposed in a direction opposing each other in the circumferential direction.

8 . The motor according to claim 7 , wherein
the first end part is disposed at the inside of the first recess part in a state of being inclined toward the second recess part in the circumferential direction, the second end part is disposed at the inside of the second recess part in a state of being inclined toward the first recess part in the circumferential direction, and the first end part and the second end part interpose a substrate protruding part between the first recess part and the second recess part in the circumferential direction.

9 . The motor according to claim 8 , wherein
the first end part includes a first bent portion bent in the circumferential direction of the substrate at a portion protruding from an inside of the first recess part to an outside, the second end part includes a second bent portion bent in the circumferential direction of the substrate at a portion protruding from an inside of the second recess part to an outside, and the first bent portion and the second bent portion are bent in a direction opposing each other.

10 . The motor according to claim 9 , wherein
the first end part includes a first deformed portion located at a side of the second bent portion with respect to the first bent portion and having a cross-sectional shape different from a cross-sectional shape of the conducting wire, and the second end part includes a second deformed portion located at a side of the first bent portion with respect to the second bent portion and having a cross-sectional shape different from the cross-sectional shape of the conducting wire.

11 . A motor comprising:
a stator including a magnetic body and a conducting wire wound around the magnetic body; and a substrate having an annular shape and provided at the stator, wherein the substrate includes one or more recess parts recessed at an inside in a radial direction from an outer peripheral end, and a land having conductivity and connected to the conducting wire, an end part of the conducting wire being disposed at an inside of the recess part, the land includes a first land disposed at a front surface side of the substrate along the recess part, a second land disposed at a rear surface side of the substrate along the recess part, and a third land disposed at an inner peripheral surface of the recess part, and the first land, the second land, and the third land communicate with one another.

12 . The motor according to claim 11 , wherein
the end part of the conducting wire is fixed at at least the first land.

13 . The motor according to claim 11 , wherein
the first land has an area larger than the third land.

14 . The motor according to claim 11 , wherein
the end part of the conducting wire is connected to the first land, the second land, and the third land by soldering while being disposed at an inside of the recess part.

15 . A motor comprising:
a coil formed of a conducting wire; and an insulator including an outer surface surrounded by the coil, wherein the outer surface of the insulator includes a plurality of recess parts and a flat surface, and parts of the conducting wire opposed to the flat

Assignees

• Minebea Mitsumi Inc

Inventors

• Yamada Takuji
• Murakami Hiroaki
• Tamura Youko

Classifications

• H02K1/14

  Stator cores with salient poles · CPC title

• H02K2203/06

  Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations · CPC title

• H02K1/148

  Sectional cores (H02K1/141 takes precedence) · CPC title

• H02K2203/12

  Machines characterised by the bobbins for supporting the windings · CPC title

• H02K3/34 Primary

  between conductors or between conductor and core, e.g. slot insulation · CPC title