| 发明名称 |
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| 摘要 |
PROBLEM TO BE SOLVED: To provide a circulating water tank sound measuring device capable of suppressing the effect the sound reflected on the racks for fitting receivers or signal lines connected to the receivers by burying and integrally forming the receivers in sound absorbing materials. SOLUTION: The base end sections 26c of sound absorbing materials 26 each made of a rubbery elastic material as a raw material constituted of a wedge-shaped projection 26a and a support section 26b are fitted to the inner wall faces of measuring troughs toward sound windows 21. A piezoelectric rubber small receiver 27 is buried in the projection 26a side of the sound absorbing material 26, the sound absorbing material 26 has a structure of a base rubber 28 and a cover rubber 29 adhered together. A recess 30 storing the receiver 27 and a signal line storage groove 32 storing the signal line 31 of the receiver 27 extended in the longitudinal direction through the recess 30 are formed inside the center section of the projection 26a of the base rubber 28. |
| 申请公布号 |
JP2987433(B2) |
申请公布日期 |
1999.12.06 |
| 申请号 |
JP19970347578 |
申请日期 |
1997.12.17 |
| 申请人 |
BOEICHO GIJUTSU KENKYU HONBUCHO;YOKOHAMA GOMU KK;JEI AARU SHII TOTSUKI KK |
发明人 |
SATO RYUICHI;NAGANUMA KENJI;HORII HIROSHI;NAKAMURA KAORU;ISHIMAE KOZO |
| 分类号 |
G01M10/00;G01H3/00;G01N29/00;G01S7/52;H04R1/44 |
主分类号 |
G01M10/00 |
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