IMAGE PICKUP UNIT AND ENDOSCOPE

摘要

An image pickup unit includes a fixed frame configured to hold an objective lens, a moving frame movable in a first direction along a photographing optical axis and a second direction, and provided with a moving lens, an urging member configured to urge the moving frame in the second direction, an actuator including a contact member provided to be separable from the moving frame and advanced and retracted by pushing and pulling of a driving wire, the actuator moving the moving frame in the first direction when the contact member moves in the first direction; and a guide member through which the contact member is inserted to be linearly guided and a cover member configuring the actuator, a distal end portion of the cover member being connected to a proximal end portion of the guide member, and the cover member covering the driving wire.

主权项

1. An image pickup unit comprising:
a fixed frame configured to hold an objective lens; a moving frame disposed in the fixed frame to be movable in a first direction along a photographing optical axis and a second direction on an opposite side of the first direction, and provided with a moving lens; an urging member disposed in the fixed frame and configured to urge the moving frame in the second direction; an actuator including a bar-like contact member fixed to a distal end of a driving wire to be separable from the moving frame and advanced and retracted by pushing and pulling of the driving wire, the actuator moving the moving frame in the first direction when the contact member moves in the first direction and comes into contact with and presses the moving frame; and a tubular guide member fixed to the fixed frame and including a guide hole through which the contact member is inserted to be guided to advance and retract, wherein a cover member configuring the actuator, a distal end portion of the cover member being connected to a proximal end portion of the guide member, and the cover member covering the driving wire, wherein the contact member has an outer diameter smaller than an inner diameter of the guide hole over an entire length in an advancing and retracting direction and is insertable into and retractable from the guide member, the cover member includes a peeling section in which a plurality of slits are formed in a position extrapolated and firmly attached to the proximal end portion of the guide member, and the driving wire includes an exposed section exposed in a state in which the cover member is peeled in the peeling section, the exposed section enabling the contact member fixed to the driving wire to be removed.