JPH02111122U

JPH02111122U -

Info

Publication number: JPH02111122U
Application number: JP1955989U
Authority: JP
Priority date: 1989-02-23
Filing date: 1989-02-23
Publication date: 1990-09-05
Anticipated expiration: 2004-02-23
Also published as: JPH0727460Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係るカメラの視度調整装置の
一実施例を示す接眼側から見た概略断面図、第２
図はカメラのフアインダ部における視度調整用レ
ンズの配置等を示す概略側面図、第３図ａ，ｂは
視度調整用操作つまみと回転伝達軸との間の係合
手段を例示する概略平面図およびその要部分解斜
視図である。１０…カメラの視度調整装置、１１…カメラ本
体のフレームカバー、１１ａ…凹所、１２…シヤ
ーシ、１３…固定側接眼レンズとしての凹レンズ
、１４…可動側接眼レンズとしての凸レンズ、１
５…レンズ枠、１６…主軸、１７…補助軸、１８
…ラツク部、２０…可動力伝達機構、２１…視度
調整用操作つまみ、２２…板ばね、２３…ストツ
パ用フランジ部、２３ａ，２３ｂ…ストツパ部、
２４…（第１の）回転伝達軸、２４ａ…コイルば
ね（弾性支持手段）、２５…入力側ピニオン、２
６…減速ピニオン、２７…出力側ピニオン、２８
…第２の回転伝達軸、２９…板ばね、３０…係合
手段、３１…十字状係合孔、３２…三角柱形状を
呈する係合部。 FIG. 1 is a schematic sectional view of an embodiment of the diopter adjustment device for a camera according to the present invention, as seen from the eyepiece side;
The figure is a schematic side view showing the arrangement of the diopter adjustment lens in the viewfinder section of the camera, and Figures 3a and 3b are schematic plane views illustrating the engagement means between the diopter adjustment operation knob and the rotation transmission shaft. FIG. 2 is a diagram and an exploded perspective view of its essential parts. DESCRIPTION OF SYMBOLS 10... Camera diopter adjustment device, 11... Frame cover of camera body, 11a... Recess, 12... Chassis, 13... Concave lens as a fixed side eyepiece, 14... Convex lens as a movable side eyepiece, 1
5...Lens frame, 16...Main axis, 17...Auxiliary axis, 18
... Rack part, 20... Movable force transmission mechanism, 21... Diopter adjustment operation knob, 22... Leaf spring, 23... Stopper flange part, 23a, 23b... Stopper part,
24... (first) rotation transmission shaft, 24a... coil spring (elastic support means), 25... input side pinion, 2
6... Reduction pinion, 27... Output side pinion, 28
...Second rotation transmission shaft, 29...Plate spring, 30...Engagement means, 31...Cross-shaped engagement hole, 32...An engagement portion exhibiting a triangular prism shape.

Claims

[Scope of utility model registration request]

an eyepiece held in a lens frame facing into the optical path of the eyepiece and movable in the direction of the optical axis;
An operating knob for adjusting the diopter that can be pulled out to the outside of the camera body and rotated while being pushed in.
It consists of a movable force transmission mechanism that transmits the rotation adjustment operation by this operation knob to the lens frame side, and this movable force transmission mechanism is elastically supported on the camera body side in a state that it can move in the axial direction. the rotation transmitting shaft, and the rotation transmitting shaft is engaged with the operating knob so as to transmit rotation when the operating knob is pulled out of the main body, and a torque above a certain level is applied to the rotation transmitting shaft. A diopter adjustment device for a camera, characterized in that the diopter adjustment device for a camera is provided with an interposed engaging means that is released from the engaged state by means for elastically supporting the rotation transmission shaft.