| 摘要 |
PROBLEM TO BE SOLVED: To always keep an attenuation function constant by arranging a structural body as a countermeasure against deflation of an air spring within a hollow portion of a tubular laminated rubber and to simply constitute a seal mechanism of a flow path for filling gas into the air spring and the flow path itself. SOLUTION: The air spring device includes the air spring 4 which is composed of an upper face plate 1, a lower face plate 2 and a tubular flexible diaphragm body 3 having opposite ends respectively airtightly connected to the upper and lower face plates 1, 2. The tubular laminated rubber 6 and a shear spring means 5 are respectively arranged between the lower face plate 2 of the air spring 4 with a pressurized gas sealed inside and a level lower end supporting plate 8 spaced downward from the lower face plate 2. The tubular laminated rubber 6 includes a structure in which annular rubber plates 6a and annular rigid plates 6b are alternately laminated horizontally and includes a lower end face connected to the lower end supporting plate 8. At least part of the shear spring means 5 is inserted in the hollow portion of the tubular laminated rubber 6. The upper face plate 1 is provided with a throttling passage 15 communicating the air spring 4 with an auxiliary tank 13 under such a condition that the gas flow path 14 is narrowed. COPYRIGHT: (C)2009,JPO&INPIT |
