Cover assembly for on-board electric equipment and method of manufacturing the cover assembly

A cover assembly for on-board electric equipment, the cover assembly being configured to accommodate an electric circuit, comprising:

• a cover body;
• and
• a connector that is mounted to the cover body, includes a terminal and a connector housing, and electrically connects the electric circuit to an external component outside the cover assembly, wherein
• the cover body includes a ferrous base metal body, and a Zn-based plating layer joined to a surface of the base metal body that faces away from the electric circuit, wherein an interface is formed where the plating layer joins the base metal body,
• the cover body has a through hole that is formed through the base metal body and the plating layer,
• the terminal is passed through the through hole and electrically connected to the electric circuit,
• the connector housing is formed on the cover body so as to surround the terminal, wherein the connector housing is made of a thermoplastic resin-based material,
• a laser mark is formed on the cover body, wherein the laser mark has a circular shape about the through hole and penetrates the plating layer to the base metal body,
• grooves are formed on the interface and the grooves are open toward the laser mark, and
• the connector housing extends to the base metal body through the plating layer within the laser mark so that a part of the connector housing and the grooves are engaged with each other.