Electrode structure

An electrode structure comprising:

• an insulating support that is arranged so as to face a core metal of a steering wheel;
• a first electrode that is arranged on an opposite side of the insulating support relative to a side of the insulating support facing the core metal, and includes a metal plate;
• a first resin layer that is arranged on an opposite side of the first electrode relative to a side of the first electrode facing the insulating support;
• and
• a second electrode that is arranged on an opposite side of the first resin layer relative to a side of the first resin layer facing the first electrode, and includes a metal plate, wherein
• the insulating support includes an engagement portion that engages an engagement-target portion provided on the core metal, and
• the engagement portion includes a fastener hole into which a fastener is inserted to fasten the engagement portion to the engagement-target portion of the core metal.