Housing type pipe joint

A housing type pipe joint for liquid tightly or airtightly connecting a pair of tubular members in a state where tube ends of the tubular members are opposing to each other, each of the pair of said tubular members having a level difference part over the entire circumference at a position a predetermined distance in an axial direction apart from the tube end, and outer diameters of the tubular members on the tube end side from the level difference part being larger than outer diameters of the tubular members on the opposite side from the level difference part, wherein:

• said housing type pipe joint comprises a sealing member, a first casing, a second casing and tightening members, and
• said sealing member is formed of an elastic material, has an annular shape, has an approximately U-character shaped cross section which opens toward an inside in a radial direction by comprising an outer peripheral part that is a cylindrical tubular part and two rim parts extending from both ends of said outer peripheral part in the axial direction toward the inside in the radial direction, and comprises a lip part having lip surfaces that are surfaces opposing to outer peripheral surfaces of said tubular members at end parts of said two rim parts on a side opposite to said outer peripheral part of said sealing member,
• said first casing is constituted by a combination of first segments that are a plurality of circular arc-shaped members, each of which is molded as an integrated object from a metal plate, and has an annular shape with an approximately U-character shaped cross section which opens toward the inside in the radial direction by comprising an outer peripheral part that is a cylindrical tubular part as a whole and two rim parts extending from both ends of said outer peripheral part in the axial direction toward the inside in the radial direction, and
• said second casing is constituted by a combination of second segments that are a plurality of approximately circular arc-shaped members, each of which is molded as an integrated object from a metal plate, and has an annular shape as a whole, and
• each of said second segments comprises a main body part that is a circular arc-shaped part and flange parts that are parts erected so as to extend toward an outside in the radial direction of said second casing at both ends of said main body part,
• said main body part has an approximately U-character shaped cross section which opens toward the inside in the radial direction by comprising an outer peripheral part which constitutes a part of an outermost surface in the radial direction of said second casing and two rim parts extending from both ends of said outer peripheral part in the axial direction of said second casing toward the inside in the radial direction of said second casing,
• a first plate thickness that is a plate thickness of said first segment is equal to a second plate thickness that is a plate thickness of said second segment or is larger than said second plate thickness, and
• a predetermined region included in said rim part of said first segment and a predetermined region included in said rim part of said second segment are fixed with each other.