| 摘要 |
An endoscope including a bending operation apparatus including a bending operation mechanism section and a bending portion braking mechanism section in an operation section, the bending operation mechanism section includes a bending lever, a first bearing member transmitting a force of the lever, and a cylindrical member rotated with an operation of the lever, and the bending portion braking mechanism section includes a bending state keeping lever, a braking shaft body transmitting a force of the lever, a second bearing member pivotally supporting the braking shaft body, a rotation pressing member rotating around an axis of the second bearing member, and having inclined projection portions, a slide pressing member having inclined projection portions opposed to the projection portions, a friction member abutting on the cylindrical member, a regulation member regulating a gap where the friction member is disposed, and positioning members regulating a braking force of the friction.
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