OCULAR PORTION COUPLING APPARATUS

摘要

An ocular portion coupling apparatus includes: a stepped pipe on which lock balls which are pressed against an eyepiece, are slidably arranged; and a rotation ring placed turnably on a ring placing surface, the rotation ring including a cam surface, wherein the stepped pipe includes convex pieces protruding outward from an outer circumferential surface of the large diameter portion, the convex pieces including one planes, the one planes and the ring placing surface sandwiching the rotation ring, and the rotation ring includes: axis direction grooves through which the convex pieces can pass; slide planes on which the one planes are slidably arranged; and restriction portions configured to prevent the convex pieces from dropping out through the axis direction grooves.

主权项

1. An ocular portion coupling apparatus comprising:
a locking body, provided on an ocular portion of an observation apparatus, including a pressing portion pressed against a tapered surface at one end portion of the locking body; a fixing component including a slide hole on which the locking body is arranged slidably in a direction orthogonal to a center axis at a large diameter portion of the fixing component; and a rotation ring placed turnably on a ring placing surface provided on a circumferential surface side of the large diameter portion of the fixing component, the rotation ring including a cam surface rotated in one direction to gradually press another end portion of the locking body arranged in the slide hole to cause the pressing portion of the locking body to protrude for a preset amount from an inner circumferential surface of the large diameter portion to obtain a held and fixed state, the cam surface being rotated in another direction to allow the locking body to slide in the slide hole to obtain an attached and removed state, wherein the fixing component includes a convex piece protruding outward from an outer circumferential surface of the large diameter portion of the fixing component, the convex piece comprising one plane, the one plane and the ring placing surface sandwiching the rotation ring, and the rotation ring includes: an axis direction groove through which the convex piece can pass; a slide plane on which the one plane of the convex piece led out from the axis direction groove is slidably arranged; and a restriction portion configured to prevent the convex piece arranged on the slide plane from dropping out through the axis direction groove.