PROBLEM TO BE SOLVED: To provide an ultrasonic signal connector of an ultrasonic endoscope, capable of firmly fixing a lid body to a casing of the ultrasonic signal connector by using a latch, and capable of preventing the latch from being deformed with the force applied to the latch when the lid body is detached without unnecessarily widening the latch.SOLUTION: The ultrasonic signal connector of the ultrasonic endoscope has at least a pair of manual latches 33, detachably engaged to the casing 10 side from the lid body 20 side to fix the lid body 20 to the casing 10 so that the lid body 20 is not detached from the casing 10. The latches 33 are rotatable around a spindle 34. A latch abutting part 40, to which the latch 33 abuts when the latch 33 is rotated around the spindle 34 in the opposite direction from the direction in which the latch 33 is engaged with the casing 10 side, is formed at a location closer to the spindle 34 than one-third of the distance from a rotating free end 33a of the latch 33.COPYRIGHT: (C)2008,JPO&INPIT【課題】超音波信号コネクタの筐体に掛け金を用いて蓋体をしっかりと固定することができ、しかも、掛け金を徒に太くすることなく、蓋体を取り外す際に加えられる力で掛け金が変形することのない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】蓋体20側から筐体10側に対し係脱自在に係合して、蓋体20を筐体10から外れないように固定する少なくとも一対の手動の掛け金33が支軸34を中心に回動自在に設けられた超音波内視鏡の超音波信号コネクタにおいて、掛け金33が筐体10側に係合するのと逆側に支軸34を中心に回動した状態の時に掛け金33が当接する掛け金当たり部40が、掛け金33の回動自由端33aから見て支軸34までの距離の3分の1より近い位置に形成されている。【選択図】 図1