Connector assembly including connector and mating connector lockably mateable with each other

A connector assembly comprising a connector and a mating connector, wherein:

• the connector is mateable with the mating connector, which is located below the connector in an upper-lower direction, along the upper-lower direction;
• the mating connector comprises a mating holding member and a mating lock member;
• the mating holding member holds the mating lock member;
• the mating lock member has a mating lock portion;
• the mating lock portion faces at least downward;
• the connector comprises a holding member and a lock member;
• the holding member has a holding portion and a stop portion;
• the lock member has a held portion, a lock portion, and a coupling portion;
• the held portion is held by the holding portion;
• the lock portion and the mating lock portion are configured to lock a mated state where the connector and the mating connector are mated with each other;
• the coupling portion couples the held portion and the lock portion to each other;
• the lock portion is located below the mating lock portion and faces the mating lock portion in the upper-lower direction under the mated state;
• the coupling portion has an abutment portion;
• when the lock portion is moved toward the held portion in a first horizontal direction perpendicular to the upper-lower direction in accordance with removal of the connector from the mating connector under the mated state, the abutment portion is brought into abutment with the stop portion so that a movement of the lock portion is restricted;
• the lock member has a guide projection;
• the guide projection projects in a second horizontal direction perpendicular to both the upper-lower direction and the first horizontal direction;
• the abutment portion is a part of the guide projection;
• a guide channel is provided in the holding member;
• the guide channel is recessed in the second horizontal direction and extends in the upper-lower direction;
• the guide channel includes an inner wall which intersects with the first horizontal direction;
• and
• the inner wall works as the stop portion.