Motor wiring member

Patent metadata

Field	Value
Publication number	US-11652382-B2
Application number	US-202117393829-A
Country	US
Kind code	B2
Filing date	Aug 4, 2021
Priority date	Aug 7, 2020
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

A motor wiring member configured to supply three-phase alternating current to a motor includes conductive wires, each of which has a connecting portion being provided at one end and being configured to be connected to a coil end of a stator of the motor, a terminal being provided at an other end of each conductive wire and being configured to be connected to an electrode of a terminal block, and a surge suppression section being configured to suppress an overvoltage from being applied to the motor. The surge suppression section includes three series circuits, each of which includes a resistor and a capacitor. One ends of the three series circuits are electrically connected to the conductive wires of respective phases, and other ends of the three series circuits are electrically connected to each other. The surge suppression section is provided along with the conductor wires near the terminal and is located between the terminal and the connecting portion.

First claim

What is claimed is:

1. A motor wiring member configured to supply three-phase alternating current to a motor, comprising:
conductive wires, each of which comprises a connecting portion being provided at one end and being configured to be connected to a coil end of a stator of the motor;
a terminal being provided at an other end of each conductive wire and being configured to be connected to an electrode of a terminal block; and
a surge suppression section being configured to suppress an overvoltage from being applied to the motor,
wherein the surge suppression section comprises three series circuits, each of which includes a resistor and a capacitor,
wherein one ends of the three series circuits are electrically connected to the conductive wires of respective phases, and other ends of the three series circuits are electrically connected to each other, and
wherein the surge suppression section is provided along with the conductive wires near the terminal and is located between the terminal and the connecting portion.

2. The motor wiring member according to claim 1 , wherein the other ends of the three series circuits are electrically connected to each other via a busbar.

3. The motor wiring member according to claim 2 , wherein each of the three series circuits in the surge suppression section is configured in such a manner that one lead wire of the resistor is electrically connected to the conductive wire, an other lead wire of the resistor is electrically connected to one lead wire of the capacitor, and an other lead wire of the capacitor is electrically connected to the busbar, and the other lead wire of the resistor or the one lead wire of the capacitor is bent away from the conductive wire in such a manner that the capacitor is separated from the conductive wire than the resistor.

4. The motor wiring member according to claim 3 , wherein the busbar is located in such a manner that the conductive wire and the busbar sandwich the resistor.

5. The motor wiring member according to claim 1 , wherein the surge suppression section has a cover comprising a molded resin to cover the three series circuits together, and the cover has fins for heat dissipation.

6. The motor wiring member according to claim 5 , further comprising:
a holding section covering a portion of the conductive wires together and holding the conductive wires in a coupled state together,
wherein the cover has an engaging section to be engaged with the holding section, and
wherein the surge suppression section is secured to the holding section by engaging the engaging section with the holding section.

7. The motor wiring member according to claim 1 , wherein the one ends of the three series circuits of the surge suppression section are fastened by crimping to the terminals and electrically connected to the conductive wires of respective phases.

Assignees

• Hitachi Metals Ltd
• Proterial Ltd

Inventors

• Sagawa Masanori
• Sugiyama Yuta
• Fukuchi Keisuke
• Ikeda Yukio

Classifications

• H02K11/0094 Primary

  Structural association with other electrical or electronic devices · CPC title

• H02K3/38

  around winding heads, equalising connectors, or connections thereto · CPC title

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H02H9/042

  comprising means to limit the absorbed power or indicate damaged over-voltage protection device · CPC title

• H02K3/50 Primary

  Fastening of winding heads, equalising connectors, or connections thereto · CPC title