Abstract: A ceramic material that has a high resistivity and high corrosion resistance according to the present invention contains magnesium-aluminum oxynitride and has a carbon content of 0.005 to 0.275 mass %.

Abstract: A ceramic heater includes a ceramic plate. An outer-peripheral-side resistance heating element is disposed in an outer peripheral zone of the ceramic plate. A wire line extends from each of a pair of terminals disposed in a central portion of the ceramic plate toward the outer peripheral zone, and a portion of the wire line close to the outer peripheral zone is a linear portion. A connection terminal is a conductive member connecting between the wire line and the outer-peripheral-side resistance heating element, and includes a first hole into which the linear portion of the wire line is inserted and a second hole into which an end portion of the outer-peripheral-side resistance heating element is inserted.

Abstract: In a waiting-side connector 40, a cover 42 is detachably mounted on the rear surface of a female housing 41. Leg pieces 44 projecting from the female housing 41 are formed with guide rails 45 to define an insertion path 46 for a bracket 10. A lock protrusion 54 is formed on the rear surface of the cover 42, whereas a lock hole 11 is formed in the bracket 10. Independent follower pins 60, 61 are provided on the female housing 41 and the cover 42. In an area of a cam groove 32 of each lever 30 of a movable-side connector 20 corresponding to a final stage of a separating operation, cam surfaces 65, 66 for individually pushing the follower pins 60, 61 are formed such that the cover 42 is less separated than the female housing 41.

Abstract: In a waiting-side connector 40, a cover 42 is detachably mounted on the rear surface of a female housing 41. Leg pieces 44 projecting from the female housing 41 are formed with guide rails 45 to define an insertion path 46 for a bracket 10. A lock protrusion 54 is formed on the rear surface of the cover 42, whereas a lock hole 11 is formed in the bracket 10. Independent follower pins 60, 61 are provided on the female housing 41 and the cover 42. In an area of a cam groove 32 of each lever 30 of a movable-side connector 20 corresponding to a final stage of a separating operation, cam surfaces 65, 66 for individually pushing the follower pins 60, 61 are formed such that the cover 42 is less separated than the female housing 41.