Connector unit

A connector unit comprising:

• a socket connector including a socket terminal and a socket-side holding member configured to cover an outer peripheral surface of the socket terminal in an airtight manner;
• and
• a pin connector including a pin terminal to be connected to the socket terminal, a first pin-side holding member configured to cover an outer peripheral surface of the pin terminal in an airtight manner, and a biasing member configured to exert a force on the first pin-side holding member toward a connection side with the socket connector when the first pin-side holding member is pushed to a side opposite to the connection side with the socket connector, wherein
• the socket-side holding member includes a recessed part formed to surround an end face of the socket terminal on a connection side with the pin connector and where an end of the first pin-side holding member on the connection side with the socket connector is to be inserted in a state where the socket connector and the pin connector are connected,
• the first pin-side holding member is made of an elastic material,
• inside the recessed part of the socket-side holding member in the state where the socket connector and the pin connector are connected, the end face of the socket terminal on the connection side with the pin connector comes into contact with the first pin-side holding member, and the end of the first pin-side holding member on the connection side with the socket connector comes into contact with a bottom face of the recessed part of the socket-side holding member,
• the first pin-side holding member includes a flange part to be pushed by the biasing member and an extension part extending to the side opposite to the connection side with the socket connector relative to the flange part, and
• the biasing member includes a plurality of divided pieces and is disposed to surround the extension part of the first pin-side holding member.