下村電機工業株式会社SHIMOMURA DENKI KOGYO CO., LTD.
Coils for industrial and medical equipment, from winding to varnish impregnation and resin molding. Founded in May 1955 and incorporated in November 1963 in Aichi, Japan.
What we make
- Varnish-treated coils
- Molded coils
- Tape-wrapped coils
- OEM assembly of AC/DC solenoids and solenoid valves
We do not only wind coils. We also carry out varnish treatment and resin molding for dust and water protection in-house. Our coils are used in medical equipment such as ventilators, dialysis machines and blood analyzers.
We handle small-lot, high-mix production.
Fields we supply
Solenoids for machine tools, medical, aerospace, semiconductors and electric power.
Seven insulation methods
| Method | Group | What it does |
|---|---|---|
| Surface coating | Varnish | Protects only the coil surface with varnish applied by brush or spray. |
| Dip impregnation | Varnish | The coil is dipped in a varnish tank so the varnish soaks in. |
| Vacuum impregnation | Varnish | The tank is put under vacuum while the coil is dipped, removing air so the varnish penetrates easily. It also reduces moisture in the insulation. |
| Injection molding | Molding (thermoplastic resin) | Heated resin is injected at high pressure to form the product. |
| Pressure gelation | Molding (thermosetting resin) | Vacuum-degassed resin is poured into the mold at high pressure. Small thermal deformation and strong in thermal cycle tests. |
| Casting | Molding (thermosetting resin) | Resin is poured into the mold. |
| Vacuum casting | Molding (thermosetting resin) | Resin is poured into the mold and vacuum-degassed in place. |
Main customers
- 愛知電機株式会社
- 株式会社東光高岳
- 兼工業株式会社
- 甲南電機株式会社
- CKD株式会社
- 高砂電気工業株式会社
- 日活電線製造株式会社
- 不二電機工業株式会社
- マルハ電機株式会社
- 矢崎エナジーシステム株式会社
- Y.L.B株式会社
Locations and contact
Head office plant
70-1 Yotsutsuji-higashi-ichinokiri, Tamanoi, Kisogawa-cho, Ichinomiya, Aichi 493-0004, Japan
Tel +81-586-87-2121 / Fax +81-586-87-2123
Shinmei plant (molding)
62-3 Shinmei-higashi, Satokomaki, Kisogawa-cho, Ichinomiya, Aichi 493-0005, Japan
Tel +81-586-87-2122 / Fax +81-586-87-2124
Phone hours: 8:00–17:00 (Japan time)