Straight joint for cable

A linear cable connector comprising:

• connection terminals that are made of conductive materials and formed with connection holes on both ends in the axial direction that open up on the both ends;
• plugs that are made of conductive material and that have tip ends inserted into the connection holes, and base ends securely fastened to the ends of conductive members forming a pair of cables to be connected together;
• a center component that is made of insulating material and that is provided all the way around the connection terminals such that it covers the connection terminals on the circumference thereof;
• and
• a pair of insulating tubes that are provided around the ends of the cables and around the plugs, such that both ends of the center component can be freely inserted into the openings on the respective ends of the pair of inserting tubes,
• wherein the opening ends of this pair of insulating tubes are joined together at the middle section of the center component, the linear cable connector characterized by side flanges that are formed all the way around the opening ends of the insulating tubes, such that the side flanges are fastened together with a seal ring located between the abutting flange surfaces,
• wherein a middle flange is located generally around the outer peripheral surface in the middle section of the center component such that it protrudes outward in the radial direction, such that the middle flange is held between the abutting surfaces of the side flanges on both of the insulating tubes with seal rings interposed, and that the side flanges on both of the insulating tubes are fastened to the middle flange.