Eyepiece connecting device

Abstract

An eyepiece connecting device 20 is provided with: a locking ball 24 to be pressed against an eyepiece 17; a stepped pipe 40 having a locking ball hole 41 in which the locking ball 24 is slidably received; and a rotating ring 30 which is rotatably placed on a ring mounting surface 43 provided on the outer circumferential side of a widened part 40b of the stepped pipe 40 and has a cam surface 36 which is rotated in one direction to create a holding fixing state and rotated in another direction to create an attachment release state. The stepped pipe 40 has protruding pieces 42 protruding outward from the outer circumferential surface of the widened part 40b, each having a flat surface 42a for holding the rotating ring 30 together with the ring mounting surface 43. The rotating ring 30 comprises: axial grooves 34 which allow the protruding pieces 42 to pass therethrough; a slidable flat surface 33 on which the flat surfaces 42a are slidably mounted; and regulation parts 23, 35 for preventing the protruding pieces 42 from dropping through the axial grooves 34.

Description

technical field [0001] The present invention relates to an eyepiece coupling device that enables an imaging device to be freely attached to and detached from an eyepiece of an observation device by one-touch. Background technique [0002] For example, in an endoscope, which is one of observation devices having an optical tube unit and an eyepiece unit (also referred to as an eyepiece), a camera as an imaging device may be attached to the eyepiece unit and used. In this case, the camera head is connected to the eyepiece via an eyepiece connection device (also referred to as an eyepiece mount or an endoscope mount). [0003] Japanese Patent Application Laid-Open No. 2004-147981 shows an eyepiece mount that can be freely attached to and detached from the eyepiece. The eyepiece holder is provided with a push portion that pushes against the tapered portion of the eyepiece. [0004] Japanese Patent Application Publication No. 7-86590 discloses an endoscope holder composed of an ...

AI Technical Summary

Problems solved by technology

[0019] However, in the above-mentioned assembly, there is a possibility that the rotating ring 2 often falls off from the fixing member 3 until the ring plate 1 is fixed to the fixing member 3 by the fixing screw 7.

Therefore, when the spring 4 is fixed to the rotating ring 2 by the spring fixing screw 5, etc., there is a possibility that the positional relationship between the rotating ring 2 and the fixing member 3 may deviate, or the rotating ring 2 may float up relative to the fixing member 3. Work hard on screwing

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