Patent ID: 6945828

Claim:
A main connector, having a connector body that can be detachably coupled to one of a plurality of sensor bodies arranged aligned and in contact with each other, and an electric cord including a power feed line; wherein said connector body includes: a first joint for a sensor body, including a power feed terminal adapted for feeding power to an internal electric circuit of the sensor body, and a first connecting structure configured for mechanically and detachably fixing the first joint to the sensor body, the first connecting structure including an elastic projection portion; a second joint for a neighboring connector, including a power feed terminal configured for feeding power to the neighboring connector, and a second connecting structure configured for mechanically and detachably fixing the second joint to the neighboring connector, the second connecting structure including an engaging slot, the engaging slot arranged in and passing through an endface of the second joint; and an internal conductor for conducting the power fed through said electric cord to the power feed terminal included in said first joint and to the power feed terminal included in said second joint, inside the main connector.