Notice Regarding the Conclusion of a Joint Development Agreement for an Electric Door System for Next‑Generation Mobility.

Mitsuba Corporation ("Mitsuba") has concluded a joint development agreement with Toyo Denki Seizo K.K. ("Toyo Denki Seizo") and Taihei Denki K.K. ("Taihei Denki") for electric door systems for next-generation mobile vehicles (railroads, buses, BRT, LRT, etc.).

This joint development aims to improve safety and reliability through the electrification of door systems in rail and bus vehicles, and to expand the system to next-generation mobile vehicles.

Mitsuba will create safety, security, and comfort for vehicles with rare earth-free (*1) smart motors (*2) based on its motor and control technologies cultivated in the automotive field.

This will be the first project under the "New Business Office" newly established by Minebea in April 2026.

*1: The magnets do not use rare earths and are designed to reduce environmental impact.

*2: This is an integrated motor that integrates a motor, gears, sensors, control ECU, and software, and has a built-in control function (brain).

Photo of the signing ceremony

Joint development system

Toyo Denki Seizo

Toyo Denki Seizo will lead the integration of the three companies' technologies by leveraging its extensive knowledge in the railroad field.

Taihei Denki

Taihei Denki will be in charge of designing and manufacturing the entire door system, utilizing its expertise in pneumatic door-shutting devices for railroads and buses.

Mitsuba

Mitsuba provides smart motor technology and is responsible for the development of drive units (motors and control applications) for electric door-shutting devices.