Connector and connector engagement structure

A connector which accommodates female terminals in a plurality of female terminal accommodating chambers arranged side by side in a connector housing, wherein the connector housing has:

• a protruding enclosure wall provided at each of the female terminal accommodating chambers in such a way that walls enclosing an outer periphery of each female terminal protrude towards a direction of connector engagement with a connection mating connector;
• and
• a coupling wall configured to couple base ends of the protruding enclosure walls of at least one group of the female terminal accommodating chambers adjacent to each other, and
• wherein an inter-terminal through hole which penetrates through the inside of the connector housing and is communicated to an outside of the connector housing is formed in the coupling wall,
• wherein the male terminal side connector housing of the connection mating connector includes:
• a male terminal holding wall configured to hold the male terminals so as to protrude towards a direction of connector engagement;
• and
• a partition wall erected on the male terminal holding wall and partitioning the adjacent male terminals, and
• wherein, in a state of connector engagement with the connector, the partition wall is fitted between the protruding enclosure walls of the adjacent female terminal accommodating chambers and to be fitted to the base ends of the protruding enclosure walls.