Railway vehicle stopper

A railway vehicle stopper interposed between a vehicle body and a truck frame of a railway vehicle, the railway vehicle stopper comprising:

• a first rigid member having an annular supporting portion and a securing portion positioned at an outer peripheral side of the supporting portion, the securing portion being secured to the vehicle body or the truck frame;
• a second rigid member arranged opposed to the truck frame or the vehicle body with an interval, wherein the first rigid member and the second rigid member are superposed in an axial direction of the railway vehicle stopper;
• a rubber elastic body that extends between the first rigid member and the second rigid member in the axial direction of the railway vehicle stopper, wherein a first axial end of the rubber elastic body is connected to the supporting portion of the first rigid member and a second axial end of rubber elastic body is connected to the second rigid member so as to elastically couple the first rigid member to the second rigid member;
• a third rigid member mounted inside the supporting portion of the first rigid member to form an air chamber with the second rigid member;
• an abutting member coupled to at least one of mutually opposed surfaces of the second rigid member and the third rigid member;
• a communication passage provided on one or both of the first rigid member and the third rigid member to communicate the air chamber with an outside, and
• wherein the first axial end and the second axial end are both ends of the rubber elastic body in the axial direction of the railway vehicle stopper.