abstract |
Disclosed is a zoom electronic endoscope with good operability, in which a push button switch and a rotary lever switch are arranged coaxially with good operability so as to have a waterproof structure, and the switch lever can be lightly rotated. thing. The switch button 20A rotates in the direction around the axis integrally with the rotation of the switch lever 30A so that the switch button 20A and the switch lever 30A do not rotate relative to each other. As a waterproof seal means for preventing water from entering the operation unit 7 from the outside through the operation unit, the rotation operation surface (40) that rotates by the rotation lever switch 30 and the operation unit 7 facing the rotation operation surface (40). There is only one sealing O-ring 32 that seals between the fixed surface (8h). [Selection] Figure 1 |