RESISTANCE ELEMENT FOR VARIABLE RESISTOR

• Main Authors: HIRAYAMA YUYA, SUZUKI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 26.07.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESISTORS

To provide a resistance element for a variable resistor that is able to effectively prevent ion migration.SOLUTION: A resistance substrate (a resistance element for variable resistor) 1 comprises: an insulating substrate 10; a resistor pattern 40 used for a slide contact to slide, which is formed on an insulating substrate 10; a current collection pattern 20 used for the slide contact to slide, which is formed on the insulating substrate 10; a plurality of terminal connection patterns 60-1, 2, 3 used for a metal terminal to abut on, which is formed on the insulating substrate 10; and connection patterns 80- 1, 2, 3 connecting between the resistor pattern 40 and the terminal connection patterns 60- 1, 3 and between the current collection pattern 20 and the terminal connection pattern 60-2. At least parts of the connection patterns 80-1, 2, 3 are covered with a connection pattern covering layers 80A- 1, 3 made of the same carbon ink as a carbon ink forming the resistor pattern 40. At least parts of the connection pattern covering layers 80A-1, 3 are covered with an insulator layer 100.SELECTED DRAWING: Figure 5 【課題】イオンマイグレーションを効果的に防止することができる可変抵抗器用抵抗素子を提供すること。【解決手段】絶縁基板１０と、絶縁基板１０上に形成される摺動接点摺接用の抵抗体パターン４０と、絶縁基板１０上に形成される摺動接点摺接用の集電パターン２０と、絶縁基板１０上に形成される金属端子当接用の複数の端子接続パターン６０−１，２，３と、抵抗体パターン４０と端子接続パターン６０−１，３の間、及び集電パターン２０と端子接続パターン６０−２の間をそれぞれ接続する接続パターン８０−１，２，３と、を具備する抵抗基板（可変抵抗器用抵抗素子）１である。接続パターン８０−１，２，３の少なくとも一部を、抵抗体パターン４０を形成するカーボンインクと同じカーボンインクからなる接続パターン被覆層８０Ａ−１，３で被覆する。接続パターン被覆層８０Ａ−１，３の少なくとも一部を、絶縁体層１００で被覆する。【選択図】図５