RESISTANCE ELEMENT AND RESISTOR USING THE SAME

• Main Authors: NODA HIRONARI, SUGIMOTO KENJI, OTSUKA AKIO
• Format: Patent
• Language: English; Japanese
• Published: 03.10.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESISTORS

To provide a small-sized resistance element and a resistor, without increasing a manufacturing cost.SOLUTION: A resistance element 31 comprises: a winding part 3a; a columnar core 32 having a concave part 32b and a convex part 32c formed in both end surfaces of the winding part; two terminal boards 33 in which one part is pressed in the concave part of the core, and a penetration hole 33a is pressed in a side surface of the convex part 32c; and a resistance wire 2 wound to the winding part, and in which both ends are bonded to each of two terminal boards. Both end parts of the resistance wire of the two terminal boards and each bonding part 4b are extended along the winding part, and each bonding part of terminal board can reduce a step difference from the winding part. In each terminal board, an expansion part 4d which can contact to an inner wall of an insulation case having a groove for housing the resistance element can be provided. A cross-section vertical to an axis line of the core can be formed in an elliptical shape. A cement resistor can be obtained by filling and hardening a cement in the groove in a state that the resistance element is housed in the groove.SELECTED DRAWING: Figure 7 【課題】製造コストの上昇を招くことなく、小型の抵抗素子及び抵抗器を提供する。【解決手段】抵抗素子３１は、巻付部３ａと、巻付部の両端面に形成される凹部３２ｂ及び凸部３２ｃとを有する柱状の芯３２と、一部が芯の凹部に各々圧入され、かつ、貫通孔３３ａが凸部３２ｃの側面に各々圧入される２枚の端子板３３と、巻付部に巻回され、両端が２枚の端子板の各々に接合される抵抗線２とを備える。２枚の端子板の抵抗線の両端部との接合部４ｂは、巻付部に沿って延設され、端子板の接合部の各々は、巻付部との段差が小さくなるようにすることができる。端子板には、抵抗素子を収容する溝を有する絶縁ケースの内壁に当接する膨出部４ｄを設けることができる。芯の軸線に垂直な断面を楕円形とすることができる。抵抗素子を溝に収容した状態で溝の中にセメントを充填して硬化させ、セメント抵抗器を得る。【選択図】図７