PROBLEM TO BE SOLVED: To provide an ultrasonic signal connector of an ultrasonic endoscope having a compact configuration which achieves good routine operability and maintains excellent air-tightness even when the pressure of an inner space is higher than that of the outside.SOLUTION: A waterproof cap 30 covers a group of electric contacts 18 water-tightly. A waterproof cap engaging groove 19 is formed on a contact group attached wall 17 so that the groove and the edge of the waterproof cap engages detachably. In addition, a pressing nail 23 is formed on the outer edge of the contact group attached wall 17 for pressing the edge of an open end of a connector case 14. With such a configuration, when the pressure of an inner space surrounded by a connector case 14 and the contact group arrangement wall 17 becomes higher than that of the outside, the pressing nail regulates an outward expansion of the open end of the connector case 14 due to a pressure difference between the inside and the outside.COPYRIGHT: (C)2008,JPO&INPIT【課題】コンパクトな構成で日常的な取りまわし性がよく、しかも内部空間の圧力が外部に比べて陽圧になっても優れた気密性を維持することができる超音波内視鏡の超音波信号コネクタを提供すること。【解決手段】電気接点群18を水密に覆うための防水キャップ30の縁部が係脱自在な防水キャップ係合溝19を接点群配置壁17に設けると共に、コネクタケース14と接点群配置壁17とで囲まれた内部空間の圧力が外部に比べて陽圧になったときにその内外圧力差でコネクタケース14の開口端が外側に広がるのを規制するようにコネクタケース14の開口端の縁部を外側から押さえる押さえ爪23を、接点群配置壁17の外縁部に形成した。【選択図】 図1
