Patent ID: 9309944
Filing Date: 2016-04-12
CPC Classification: B61F,F16F

Claim Text:
1. An air spring, comprising: a first support member; a second support member spaced apart from said first support member in a primary load direction; and an elastically deformable diaphragm connecting said first support member and said second support member to form a closed space, wherein said diaphragm has an annular shape having an opening on an inner circumferential side, in said diaphragm, a first contact portion, which is a region defining said opening and being in contact with said first support member, includes a deformed portion elastically deformed to protrude toward said second support member side by contact with said first support member, said deformed portion is in contact with said first support member located on said second support member side when viewed from said deformed portion, the first support member includes a first support and a second support arranged on the second support member side when viewed from said first support, the deformed portion is compressed in the primary load direction by contact with the second support, and the second support is in contact with an underside of the deformed portion.