Surge suppression device and motor wiring component

Patent metadata

Field	Value
Publication number	US-11870245-B2
Application number	US-202217677530-A
Country	US
Kind code	B2
Filing date	Feb 22, 2022
Priority date	Mar 12, 2021
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A surge suppression device includes a plurality of series circuits each of which is composed of a resistor and a capacitor, a case in which a plurality of the resistors and a plurality of the capacitors are placed, wherein respective ends of the plurality of series circuits on the capacitor side are electrically connected to each other via a connection electrode provided on the case. A motor wiring component includes a plurality of conductive wires connected to stator coils of the motor, wiring terminals that are provided at ends of the plurality of conductive wires on a side opposite to the side connected to the stator coils and are connected to electrodes of a terminal block, and the surge suppression device.

First claim

The invention claimed is:

1. A surge suppression device, comprising:
a plurality of series circuits each comprising a resistor and a capacitor; and
a case in which a plurality of the resistors and a plurality of the capacitors are placed,
wherein respective ends of the plurality of series circuits on the capacitor side are electrically connected to each other via a connection electrode provided on the case,
wherein an end of each of the plurality of series circuits on a side opposite to the side connected to the connection electrode is electrically connected to an electrode with terminal being provided on the case and comprising a terminal portion connected to an external conductive wire, and
wherein the terminal portions of a plurality of the electrodes with terminals are aligned in a terminal alignment direction and are bent so that openings are located on the same side in the terminal alignment direction.

2. The surge suppression device according to claim 1 ,
wherein the case comprises lead-out recesses through which respective lead wires of the plurality of resistors arranged in the case pass and extend out of the case.

3. A surge suppression device, comprising:
a plurality of series circuits each comprising a resistor and a capacitor; and
a case in which a plurality of the resistors and a plurality of the capacitors are placed,
wherein respective ends of the plurality of series circuits on the capacitor side are electrically connected to each other via a connection electrode provided on the case,
wherein in each of the plurality of series circuits, the resistor and the capacitor are electrically connected via a relay electrode provided on the case.

4. The surge suppression device according to claim 3 ,
wherein the plurality of capacitors are arranged in the case so as to be aligned in one direction, wherein the connection electrode is formed long in the one direction,
wherein a plurality of the relay electrodes are aligned in the one direction, and
wherein the plurality of capacitors are arranged at positions between the connection electrode and the plurality of relay electrodes.

5. A motor wiring component to supply an alternating current to a motor, the motor wiring component comprising:
a plurality of conductive wires connected to stator coils of the motor, wiring terminals that are provided at ends of the plurality of conductive wires on a side opposite to the side connected to the stator coils and are connected to electrodes of a terminal block; and
a surge suppression device to suppress application of overvoltage to the motor,
wherein the surge suppression device comprises a plurality of series circuits each comprising a resistor and a capacitor, and a case in which a plurality of the resistors and a plurality of the capacitors are placed,
wherein respective ends of the plurality of series circuits on the resistor side are respectively electrically connected to the conductive wires for respective phases, and
wherein respective ends of the plurality of series circuits on the capacitor side are electrically connected to each other via a connection electrode provided on the case, and
wherein in each of the plurality of series circuits, the resistor and the capacitor are electrically connected via a relay electrode provided on the case.

Assignees

• Hitachi Metals Ltd
• Proterial Ltd

Inventors

• Fukuchi Keisuke

Classifications

• H02H9/04 Primary

  responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T) · CPC title

• H02H7/09 Primary

  against over-voltage; against reduction of voltage; against phase interruption · CPC title

• H02K11/20

  for measuring, monitoring, testing, protecting or switching (rectifiers H02K11/04; power electronics H02K11/33) · CPC title

• H02H9/041

  using a short-circuiting device · CPC title