Transducer for converting between electrical energy and mechanical energy

Patent metadata

Field	Value
Publication number	US-11438680-B2
Application number	US-202016800296-A
Country	US
Kind code	B2
Filing date	Feb 25, 2020
Priority date	Feb 28, 2019
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A motor that includes a plurality of stator members and a busbar member. The busbar member connects to coil end portions of a predetermined stator member of the plurality of stator members. The busbar member may comprise a first busbar, a second busbar, and a third busbar. The busbars may include an annular-shaped base portion, and a connection terminal connected to an outer circumference of the base portion and connected to the coil end portions. The busbar member and the plurality of stator members may be aligned in an axial direction. Each connection terminal of the busbars may have a shape projecting toward the stator member relative to the base portion.

First claim

What is claimed is:

1. A transducer for converting between electrical energy and mechanical energy, comprising:
a stator comprising a coil winding; and
a busbar comprising a base portion having an annular shape and a connection terminal extending from an outer circumference of the base portion in a direction towards the stator relative to the base portion;
wherein the connection terminal is connected to a first end of the coil winding, and the busbar and the stator are aligned in an axial direction of the stator,
wherein the connection terminal comprises a first notch that extends inward from an end of the connection terminal towards an opposite side connected at the base portion, and the first end of the coil winding is connected to the connection terminal via the first notch,
wherein the connection terminal further comprises a first tongue portion formed by the first notch, and the first end of the coil winding is in contact with and connected to the connection terminal based on the first tongue portion partially surrounding the first end of the coil winding, and
wherein the connection terminal further comprises a second tongue portion formed by a second notch, and a second end of the coil winding is in contact with and connected to the connection terminal based on the second tongue portion partially surrounding the second end of the coil winding.

2. The transducer of claim 1 , wherein the stator further comprises a stator core and an insulator, and wherein the coil winding is configured to be wound around the insulator and the stator core.

3. The transducer of claim 2 , wherein the connection terminal is adjacent to or in contact with an outer surface of the insulator.

4. The transducer of claim 1 , wherein the first tongue portion is configured in a U-shape to partially surround the first end of the coil winding.

5. The transducer of claim 1 , wherein the second tongue portion is configured in a U-shape to partially surround the second end of the coil winding.

6. The transducer of claim 5 , wherein the connection terminal is adjacent to or in contact with an outer surface of an insulator.

7. The transducer of claim 1 , wherein the busbar is formed in a plate shape.

8. A transducer for converting between electrical energy and mechanical energy, comprising:
a stator comprising a coil winding; and
a busbar comprising a base portion having an annular shape and a connection terminal extending from an outer circumference of the base portion in a direction towards the stator relative to the base portion,
wherein the connection terminal is connected to a first end of the coil winding, and the busbar and the stator are aligned in an axial direction of the stator,
wherein the connection terminal comprises a first notch that extends inward from an end of the connection terminal towards an opposite side connected at the base portion, and the first end of the coil winding is connected to the connection terminal via the first notch, and
wherein the connection terminal further comprises a second notch that extends inward from an end of the connection terminal towards an opposite side connected at the base portion and parallel to the first notch, and a second end of the coil winding is connected to the connection terminal via the second notch.

9. The transducer of claim 8 , wherein the first end of the coil winding and the second end of the coil winding are angled upward in a direction away from the end of the connection terminal and in contact with the connection terminal.

10. The transducer of claim 8 , wherein the stator further comprises a stator core and an insulator, and wherein the coil winding is configured to be wound around the insulator and the stator core.

11. The transducer of claim 10 , wherein the connection terminal is adjacent to or in contact with an outer surface of the insulator.

12. The transducer of claim 8 , wherein the busbar is formed in a plate shape.

13. A busbar of a transducer comprising:
a base portion having an annular shape; and
a connection terminal extending from an outer circumference of the base portion in a direction towards a stator of the transducer relative to the base portion;
wherein the connection terminal is configured to accept a first end of a coil winding of the stator;
wherein the connection terminal comprises a first notch that extends inward from an end of the connection terminal towards an opposite side connected at the base portion, and the first end of the coil winding is configured to be connected to the connection terminal via the first notch,
wherein the connection terminal further comprises a first tongue portion formed by the first notch, and the first end of the coil winding is configured to be in contact with and connected to the connection terminal based on the first tongue portion partially surrounding the first end of the coil winding,
wherein the connection terminal further comprises a second tongue portion formed by a second notch, and a second end of the coil winding is configured to be in contact with and connected to the connection terminal based on the second tongue portion partially surrounding the second end of the coil winding.

14. The busbar of claim 13 , wherein the first tongue portion is configured in a U-shape to partially surround the first end of the coil winding.

15. The busbar of claim 13 , wherein the busbar is formed in a plate shape.

16. A busbar of a transducer comprising:
a base portion having an annular shape; and
a connection terminal extending from an outer circumference of the base portion in a direction towards a stator of the transducer relative to the base portion;
wherein the connection terminal is configured to accept a first end of a coil winding of the stator,
wherein the connection terminal comprises a first notch that extends inward from an end of the connection terminal towards an opposite side connected at the base portion, and the first end of the coil winding is configured to be connected to the connection terminal via the first notch,
wherein the connection terminal further comprises a second notch that extends inward from an end of the connection terminal towards an opposite side connected at the base portion and parallel to the first notch, and
wherein a second end of the coil winding is configured to be connected to the connection terminal via the second notch.

17. The busbar of claim 16 , wherein the busbar is formed in a plate shape.

Assignees

• Murata Manufacturing Co

Inventors

• Natsumeda Mitsutoshi
• Sakaguchi Eiji
• Amano Hisato
• Sakurada Takashi

Classifications

• H02K2203/09

  Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations · CPC title

• H02K3/34

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

• H02K3/522 Primary

  for generally annular cores with salient poles · CPC title

• H04R1/021 Primary

  incorporating only one transducer · CPC title

• H02K3/28 Primary

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title