| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously mold a diaphragm and a bound stopper in a liquid seal engine mount. SOLUTION: A main liquid chamber 23 is provided inside an insulator 20, a subsidiary liquid chamber 24 surrounded with the diaphragm 5 is provided on the outer side, and they are communicated with each other by an orifice passage 22 provided sideways of the main liquid chamber 23. The diaphragm 5 is formed on an upper bracket 3 integrally with the bound stopper 9, and separated by a discontinuous part 45. The diaphragm 5 comprises air-resistant permeable rubber, and the bound stopper 9 comprises low dynamic modulus material such as natural rubber. The diaphragm 5 and the bound stopper 9, having different characteristics from each other, are molded in one stage by separating cavities in common dies, and adjusting their vulcanization in such a way that their vulcanization is completed simultaneously. For adjusting vulcanization, temperature of injecting molten rubber, its injection timing, its volume, composition of material, etc., are varied. COPYRIGHT: (C)2005,JPO&NCIPI |
