JPS6384108U

JPS6384108U -

Info

Publication number: JPS6384108U
Application number: JP17859686U
Authority: JP
Priority date: 1986-11-20
Filing date: 1986-11-20
Publication date: 1988-06-02

Description

[Brief explanation of the drawing]

図面第１図は本考案よりなるカメラのレンズ鏡
筒の構成概要一例を示す縦断面図、第２図はズー
ム環とその周辺部分の構成を拡大して示した一部
縦断面図、第３図はズーム環の一部斜視図を示し
ている。１：距離リング、２：合焦レンズ群、３：固定
鏡筒、３ａ：固定鏡筒の溝、３ｂ：溝入口、３ｃ
：深溝、３ｄ：浅溝、４：軸体、４ａ：ツマミ、
４ｂ：バネ、５：ズームカム付きズーム環、５ａ
：変倍カム機構用のカム突起、５ｂ：補正カム機
構用のカム突起、５ｃ：ズーミング操作棒、５ｄ
：径方向貫通孔、６：リレーホルダー、７：変倍
レンズ、８：補正レンズ、９：リレーレンズ群、
１０：変倍レンズ鏡筒、１０ａ：従動子、１０ｂ
：押え板ばね、１１：補正レンズ鏡筒、１１ａ：
従動子、１１ｂ：押え板ばね、１２：ガイドバー
。 Figure 1 is a vertical cross-sectional view showing an example of the general configuration of a lens barrel of a camera according to the present invention, Figure 2 is a partial vertical cross-sectional view showing an enlarged view of the configuration of the zoom ring and its surrounding parts, and Figure 3 The figure shows a partial perspective view of the zoom ring. 1: Distance ring, 2: Focusing lens group, 3: Fixed lens barrel, 3a: Fixed lens barrel groove, 3b: Groove entrance, 3c
: deep groove, 3d: shallow groove, 4: shaft body, 4a: knob,
4b: Spring, 5: Zoom ring with zoom cam, 5a
: Cam protrusion for the variable magnification cam mechanism, 5b: Cam protrusion for the correction cam mechanism, 5c: Zooming operation rod, 5d
: radial through hole, 6: relay holder, 7: variable magnification lens, 8: correction lens, 9: relay lens group,
10: variable magnification lens barrel, 10a: follower, 10b
: Holder plate spring, 11: Correction lens barrel, 11a:
Follower, 11b: Presser plate spring, 12: Guide bar.

Claims

[Scope of utility model registration request]

The lens barrel of the camera has a fixed part, and a zoom ring is attached to the fixed part so that it can be rotated by external operation around the optical axis. In the lens barrel in which the cam and the zoom ring are formed substantially continuously in the rotational direction of the zoom ring, a groove is provided in either the fixed portion or the zoom ring in a circumferential direction and perpendicular to the optical axis direction. At the same time, the other of the fixing part or the zoom ring is provided with a protrusion that fits into the groove and is supported movably in a direction perpendicular to the optical axis, and the fitting between the groove and the protrusion allows the zoom to be adjusted. Rotation of the ring around the optical axis is allowed, but movement in the axial direction is restricted, and the groove is provided with a light beam at a position where the protrusion transitions from the area where the zoom ring slides during zoom operation to the area where it slides during macro operation. 1. A lens barrel, characterized in that a traversing portion is provided that is displaced in a direction perpendicular to the axis, and the protrusion is further provided with a radial moving means for surmounting the surmounting portion of the groove.