JPS6092217U

JPS6092217U - Braking mechanism of lens frame

Info

Publication number: JPS6092217U
Application number: JP18443183U
Authority: JP
Inventors: 俊和中島
Original assignee: オリンパス光学工業株式会社
Priority date: 1983-11-29
Filing date: 1983-11-29
Publication date: 1985-06-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、従来のズームレンズ鏡枠の一例を示す上半部
の断面図、第２図は、上記第１図のズームレンズ鏡枠の
操作枠、固定枠、ズーミング枠におけるリードカム孔と
嵌合ピンとの保合状態を示す展開図、第３図は、上記第
１図のズームレンズ鏡枠における各レンズ群の動きを示
す線図、第４図は、従来のズームレンズ鏡枠の制動機構
の一例を示す拡大断面図、第５図は、本考案の一実施例
を示すレンズ鏡枠の制動機構を示す断面図、第６図は、
上記第５図中のＡ−Ａ線に沿う断面図、第７図Ａは、上
記第５図のレンズ鏡枠の制動機構中の制動板の拡大斜視
図、第７図Ｂは同制動板の他の例を示す拡大斜視図、第
８図Ａ、　Ｂは、上記第７図Ａ、　Ｂの制動板の夫々の
配置態様を示す拡大断面図、第９図は、本考案のレンズ
鏡枠の制動機構中の制動板の他の例を示す拡大断面図で
ある。０１・・・・・・ズームレンズ鏡枠（レンズ鏡枠）、２
・・・・・・操作枠、３・・・・・・固定枠、４・・・
・・・ズーミング枠（回動枠）、３０，４０・・・・・
・制動機構、４１，５１．６１・・・・・・制動板（制
動部材）。し５図　　− □ハ□FIG. 1 is a cross-sectional view of the upper half of an example of a conventional zoom lens frame, and FIG. 2 is a diagram showing the lead cam holes and fittings in the operation frame, fixed frame, and zooming frame of the zoom lens frame shown in FIG. FIG. 3 is a diagram showing the movement of each lens group in the zoom lens frame shown in FIG. 1, and FIG. 4 is a diagram showing the braking mechanism of a conventional zoom lens frame. FIG. 5 is an enlarged cross-sectional view showing an example of the braking mechanism of a lens barrel according to an embodiment of the present invention, and FIG.
7A is an enlarged perspective view of the braking plate in the braking mechanism of the lens barrel shown in FIG. 5, and FIG. 7B is a sectional view taken along line A-A in FIG. FIGS. 8A and 8B are enlarged perspective views showing other examples, and FIGS. 8A and 8B are enlarged cross-sectional views showing the arrangement of the braking plates in FIGS. 7A and B, respectively. FIG. 9 is an enlarged perspective view of the lens frame of the present invention. FIG. 7 is an enlarged sectional view showing another example of a brake plate in the brake mechanism. 01...Zoom lens frame (lens frame), 2
......Operation frame, 3...Fixed frame, 4...
...zooming frame (rotating frame), 30, 40...
- Braking mechanism, 41, 51.61...braking plate (braking member). Figure 5 - □Ha□

Claims

[Scope of Claim for Utility Model Registration] A rotating frame that rotates in conjunction with the operation of an operation frame disposed around the outer periphery of the lens frame, a fixed frame that rotatably supports this rotating frame, and a fixed frame that rotatably supports the rotating frame. It is arranged in a circumferential groove provided on the mating surface of either the movable frame or the fixed frame, and both ends contact the circumferential surface of either of the frames, and the vicinity of the center contacts the circumferential surface of the other frame. A braking mechanism for a lens frame, comprising: a braking member made of an elastic plate having a contact on its circumferential surface;