Suncall Corporation

Hiroya Kobayakawa

Kenji Murakami

Shojiro Wakabayashi

Toshiaki Yamashita

A manufacturing method of shunt resistor according to the present invention includes a step of calculating a difference between an initial resistance value and a desired resistance value as a resistance value to be adjusted, a step of providing a plurality of recess forming members capable of forming recesses each having a characteristic size in the surface of a resistive alloy plate, a recess determining step of determining the size and the number of the recesses necessary to be formed at the surface of the resistive alloy plate, and a recess forming step of forming the recesses according to the size and the number determined in the recess determining step by using the corresponding recess forming members.

Shunt resistor

Method for manufacturing shunt resistor

In manufacturing method of shunt resistor according to the present invention, at least one of first and second conductors that is thicker than a resistance alloy plate member includes a joining surface abutted to the resistance alloy plate member with their edges on one side in a plate-thickness direction being aligned with each other, a first inclined surface that is gradually located on one side in the plate-thickness direction from the joining surface toward the side opposite to the resistance alloy plate member in the plate-surface direction, and a first plate surface extending to the side opposite to the resistance alloy plate member in the plate-surface direction from the first inclined surface. Electron beams or laser is emitted to the joining surfaces of the conductor having the larger thickness and the resistance alloy plate member from one side in the plate-thickness direction to weld the joining surfaces.

A region extending over a predetermined distance from a first latch claw center portion, out of an end part on one side in the longitudinal direction of a first latch claw opening, toward one side in the longitudinal direction is bulged radially inward to form a first latch claw while both sides of the center portion do not form the first latch claw. A region extending over a predetermined distance from a second latch claw center portion, out of an end part on the other side in the longitudinal direction of a second latch claw opening, toward the other side in the longitudinal direction is bulged radially outward to form a second latch claw while both sides of the center portion do not form the second latch claw.

Clamping band

A shunt resistor according to the present invention includes a pair of electrode plates spaced apart from each other in a plate surface direction and a resistive alloy plate that connects the pair of electrode plates and that has a predetermined set resistance value. A surface of the resistive alloy plate is provided with a visually recognizable character string pattern that is formed by laser processing and that indicates the set resistance value of the resistive alloy plate, and a surface area and a carving depth of the character string pattern are set in such a manner that the resistive alloy plate has the set resistance value.

Growing community of inventors

Kyoto, Japan

Hiroya Kobayakawa