公开(公告)号：US20180245606A1

公开(公告)日：2018-08-30

申请号：US15753916

申请日：2016-07-19

Applicant: ADVICS CO., LTD. ,  NHK SPRING CO., LTD.

Inventor： Hideki YAMAMOTO ,  Hiroshi MIZUKAMI

IPC: F15B1/10 ,  F15B1/08 ,  F16L55/053

CPC classification number: F15B1/103 ,  F15B1/083 ,  F15B1/106 ,  F15B2201/3153 ,  F15B2201/4056 ,  F15B2201/605 ,  F16L55/053

Abstract: An accumulator according to an embodiment includes, for example, a base member; a cover member welded to the base member, the cover member and the base member defining a pressure chamber therebetween; a stretchable partition member that partitions the pressure chamber into an inner chamber and an outer chamber; and a labyrinth structure provided in at least one of a first part of the base member and a second part of the cover member. The first part is located closer to the outer chamber than a welded part between the base member and the cover member. The second part is located closer to the outer chamber than the welded part, facing the first part.