| 摘要 |
<p>PURPOSE:To prevent deterioration of elasticity and excess of allowable elongation of a bladder by preventing temperature drop of the bladder through closing a liquid introducing hole by means of a thermovalve provided in the liquid introducing hole when temperature of the liquid flowing into a liquid chamber is lower than a prescribed temperature. CONSTITUTION:A thermovalve 30, which consists of a spring 32 in a hole 31 arranged in a liquid introducing hole 15A of a liquid inlet and outlet hole 15 for introducing liquid, a piston 33, a rod 34 and a temperature sensing member 36, are housed in a liquid chamber 11B. This temperature sensing member 36 consists of semihousings 36A, 36B, an elastic membrane 36C and a temperature sensing substance 36D such as wax or the like received in the arranged hole 35. When temperature of introduced liquid is lower than the lower limit which has not bad influence upon the elastic property of the bladder 20, this temperature sensing member 36 moves the rod 34, the piston 33 by spring force of the spring 32 and closes the liquid introducing hole 15A. Consequently, it is possible to prevent temperature drop of the bladder 20 below the prescribed temperature and deterioration of its elastic property and excess of its allowable elongation limit and to prolong its life.</p> |
