A connector includes a body portion having a cylindrical insertion hole for inserting therein a connection member, and a cylindrical connector cover. The body portion includes a claw portion elastically deformable to a radial outside. The connector cover includes a claw release portion through which a limitation of an elastic deformation of the claw portion is released, and a claw limiting portion configured to limit the elastic deformation of the claw portion toward the radial outside. When the connector cover is located at a release position, the claw release portion is opposite to the claw portion but the claw limiting portion is not opposite to the claw portion. In contrast, when the connector cover is moved to a lock position, the claw limiting portion is opposite to the claw portion, and the claw portion is engaged with an engagement portion provided on the connection member.