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1. 发明专利

DE68904497D1 未知
公开(公告)号：DE68904497D1
公开(公告)日：1993-03-04
申请号：DE68904497
申请日：1989-08-01
申请人： NHK SPRING CO LTD
发明人： NAKAMURA KOUJI , AKEDA MAMORU
IPC分类号： B60G13/08 , F16F9/08 , F16F9/36 , F16F9/516 , F16J15/16 , F16J15/46
摘要： An accumulator (1) comprises a housing (2) and a rod (3). The housing (2) is sealed by means of high- and low-pressure sealing devices (41, 42). The high-pressure sealing device (41) includes an annular groove (47) formed on the inner surface of the housing (2), a seal ring (44) with an L-shaped section housed in the annular groove (47), and an elastomeric O-ring (45) disposed on the outer periphery side of the seal ring (44). The seal ring (44) is composed of a thin wall portion (52), situated on the high-pressure side, and a thick wall portion (51) situated on the low-pressure side. The inner peripheral surface (51a) of the thick wall portion (51) is in contact with the outer peripheral surface of the rod (3). A gap (50), which is wide enough to receive the hydraulic fluid, is defined between the inner peripheral surface (52a) of the thin wall portion (52) and the outer peripheral surface of the rod (3). A drain recovery hole (70) is connected between the high- and low-pressure sealing devices (41, 42).

2. 发明专利

DE68904497T2 未知
公开(公告)号：DE68904497T2
公开(公告)日：1993-06-03
申请号：DE68904497
申请日：1989-08-01
申请人： NHK SPRING CO LTD
发明人： NAKAMURA KOUJI , AKEDA MAMORU
IPC分类号： B60G13/08 , F16F9/08 , F16F9/36 , F16F9/516 , F16J15/16 , F16J15/46
摘要： An accumulator (1) comprises a housing (2) and a rod (3). The housing (2) is sealed by means of high- and low-pressure sealing devices (41, 42). The high-pressure sealing device (41) includes an annular groove (47) formed on the inner surface of the housing (2), a seal ring (44) with an L-shaped section housed in the annular groove (47), and an elastomeric O-ring (45) disposed on the outer periphery side of the seal ring (44). The seal ring (44) is composed of a thin wall portion (52), situated on the high-pressure side, and a thick wall portion (51) situated on the low-pressure side. The inner peripheral surface (51a) of the thick wall portion (51) is in contact with the outer peripheral surface of the rod (3). A gap (50), which is wide enough to receive the hydraulic fluid, is defined between the inner peripheral surface (52a) of the thin wall portion (52) and the outer peripheral surface of the rod (3). A drain recovery hole (70) is connected between the high- and low-pressure sealing devices (41, 42).

3. 发明专利

JPS60137627A FOAMED CYLINDRICAL FORMED OBJECT WITH SKIN AND PROCESS THEREOF 失效
公开(公告)号：JPS60137627A
公开(公告)日：1985-07-22
申请号：JP24487083
申请日：1983-12-27
申请人： NHK SPRING CO LTD
发明人： MURATA NOBORU , NAKAMURA KOUJI
IPC分类号： F16J15/10 , B29C53/36 , B29K21/00 , B29K105/04 , B29L31/26
摘要： PURPOSE:To obtain a cylindrical formed body that is made up from rubber or synthetic resin foamed body, semicircular or semieliptical in the section, is covered with skin on the curved surface and filled with adhesive agent from the middle of the flat surface to the middle of the top. CONSTITUTION:A foamed sheet 5 with skin is carried by a conveyor roll 10 with its skin side downward and adhesive agent is applied to its upper surface (adhesion of adhesive sheet 13b or application of adhesive agent, etc.), and then folded by a guide roll 7 into two. Then its upper end section is cut by a cut knife 11 to form a flat plane. Thereafter, if necessary, an adhesive tape 13 is stuck to the flat surface section. In this way, the cylindrical formed body obtained is semicircular or semieliptical in the section, the curved surface of the internal foamed body 2 is covered with the skin 1, and adhesive agent 4 is contained from the middle of the flat surface to the middle to the top of the curved surface.

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