Shunt resistor

Patent metadata

Field	Value
Publication number	US-12080452-B2
Application number	US-202217730543-A
Country	US
Kind code	B2
Filing date	Apr 27, 2022
Priority date	Nov 18, 2019
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

A shunt resistor having improved temperature characteristics has a resistive body, a pair of base materials integrally formed on the resistive body across the resistive body, and measurement terminals fixed onto the base materials. The base materials have a plurality of cutout portions along a longitudinal direction of the base materials, wherein the plurality of cutout portions do not communicate with each other and are provided in a stepped manner.

First claim

What is claimed:

1. A shunt resistor, comprising:
a resistive body;
a pair of base materials integrally formed on the resistive body across the resistive body; and
measurement terminals fixed on the base materials, and the base materials are each provided with a plurality of cutout portions at a location away from the resistive body and along a longitudinal direction of the base materials; and
the plurality of cutout portions do not communicate with each other and are provided in a stepped manner in which a depth of the cutout portions increases as a distance from the resistive body increases.

2. The shunt resistor according to claim 1 , wherein, the plurality of cutout portions includes first and second cutout portions, the second cutout portion is located farther from the resistive body than the first cutout portion, and the second cutout portion is formed so that a depth is the deepest as compared with a depth of the first cutout portion.

3. The shunt resistor according to claim 2 , wherein, when fixed on the base materials, the measurement terminals are each fixed so as to be located above a bottom portion of the depth of the second cutout portion located farthest from the resistive body and also further inside than one side portion of a cutout portion located closest to the resistive body.

4. A shunt resistor, comprising:
a resistive body;
a pair of base materials integrally formed on the resistive body across the resistive body;
measurement terminals fixed on the base materials, and the base materials are each provided with a plurality of cutout portions along a longitudinal direction of the base materials;
the plurality of cutout portions do not communicate with each other and are provided in a stepped manner;
the plurality of cutout portions including first and second cutout portions, the second cutout portion is located farther from the resistive body than the first cutout portion, and the second cutout portion is formed so that a depth is the deepest as compared with a depth of the first cutout portion; and
when fixed on the base materials, the measurement terminals are each fixed so as to be located above a bottom portion of the depth of the second cutout portion located farthest from the resistive body and also further inside than one side portion of a cutout portion located closest to the resistive body.

5. A shunt resistor, comprising:
a resistive body;
a pair of base materials integrally formed on the resistive body across the resistive body; and
measurement terminals fixed on the base materials, and the base materials are each provided with a plurality of cutout portions at a location away from the resistive body and along a longitudinal direction of the base materials;
the plurality of cutout portions do not communicate with each other and are provided in a stepped manner; and
the plurality of cutout portions includes first and second cutout portions, the second cutout portion is located farther from the resistive body than the first cutout portion, and the second cutout portion is formed so that a depth is the deepest as compared with a depth of the first cutout portion.

6. The shunt resistor according to claim 5 , wherein, when fixed on the base materials, the measurement terminals are each fixed so as to be located above a bottom portion of the depth of the second cutout portion located farthest from the resistive body and also further inside than one side portion of a cutout portion located closest to the resistive body.

Assignees

• Suncall Corp

Inventors

• Moriyama Yuu
• Murakami Kenji
• Mugishima Akio

Classifications

• H01C1/144

  the terminals or tapping points being welded or soldered · CPC title

• H01C1/1406

  Terminals or electrodes formed on resistive elements having positive temperature coefficient · CPC title

• G01R1/203 Primary

  Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts (resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R) · CPC title

• H01C1/148 Primary

  the terminals embracing or surrounding the resistive element (H01C1/142 takes precedence) · CPC title