Disclose is a connector including: a connector combining unit; an internal housing including a wire coupling unit in which a wire is installed for electric connection with a connector installed in the connector combining unit; an external housing consisting of a conductor and in which the internal housing is installed; a first locking unit which is formed on one side of the internal housing and prevents the internal housing installed in the external housing from being separated; and a second locking unit which is formed to protrude from the outside of the internal housing to the inside of the external housing in order for the internal housing to be pressurized and installed inside the external housing.
