JPH0287222U

JPH0287222U -

Info

Publication number: JPH0287222U
Application number: JP16715688U
Authority: JP
Priority date: 1988-12-24
Filing date: 1988-12-24
Publication date: 1990-07-10

Description

[Brief explanation of the drawing]

第１図Ａ〜第８図Ｂ図はこの考案の一実施例を
示しており、第１図Ａは絞り装置の平面図、同図
Ｂは同図ＡにおけるＢ―Ｂ断面図、同図Ｃは同じ
く作用説明図、第２図は絞り装置の分解斜視図、
第３図は地板の平面図、第４図は第３図のＡ―Ａ
断面図、第５図は押し板を除いた絞り装置の平面
図、第６図は押し板の内側の平面図、第７図は駆
動装置の斜視図、第８図Ａは絞り羽根３８の作用
説明図、第８図Ｂは同じく絞り羽根４０の作用説
明図、第９図〜第１１図は従来技術の説明図であ
る。３０……地板（ガイド板）、３６……駆動装置
、４３……回転アーム、４６ａ，４６ｂ……作動
ピン、４７……付勢ばね、１５０……取り付け脚
、１５０ａ……ばね係止用段差部、３８，４０…
…絞り羽根、４２……押え板（ガイド板）、４４
，１０６……開口、７０，７２……ガイドピン、
１４０，１４１……ガイドピンの逃げ穴、８２，
８４，８６，９０，９４，１２６，１２８……低
いリブ、１２２……逃げ穴１４１に近接した低い
リブ、８８，９２，９６，１１８，１２０，１３
０……高いリブ、１２４……逃げ穴１４０に近接
した高いリブ。 Figures 1A to 8B show an embodiment of this invention, in which Figure 1A is a plan view of the aperture device, Figure 1B is a sectional view taken along line B-B in Figure A, and Figure 1C is a cross-sectional view taken along line B--B in Figure A. is also an explanatory diagram of the action, and Figure 2 is an exploded perspective view of the throttle device.
Figure 3 is a plan view of the main plate, Figure 4 is A-A of Figure 3.
5 is a plan view of the aperture device excluding the pusher plate, FIG. 6 is a plan view of the inside of the pusher plate, FIG. 7 is a perspective view of the drive device, and FIG. 8A is the action of the aperture blade 38. The explanatory diagram, FIG. 8B, is also an explanatory diagram of the operation of the aperture blade 40, and FIGS. 9 to 11 are explanatory diagrams of the prior art. 30... Base plate (guide plate), 36... Drive device, 43... Rotating arm, 46a, 46b... Operating pin, 47... Biasing spring, 150... Mounting leg, 150a... Spring locking step Part, 38, 40...
...Aperture blade, 42...Press plate (guide plate), 44
, 106... opening, 70, 72... guide pin,
140, 141...Guide pin escape hole, 82,
84, 86, 90, 94, 126, 128...Low rib, 122...Low rib close to relief hole 141, 88, 92, 96, 118, 120, 13
0...High rib, 124...High rib close to escape hole 140.

Claims

[Claims for Utility Model Registration] (1) A pair of guide plates facing each other with an opening near the center, and a pair of guide plates that are stacked and stored between these guide plates, and whose bases are connected to both ends of the rotating arm of the drive device. a pair of blades that are rotatably connected to the guide plate and that open and close the opening while moving relative to each other while being guided by a guide pin installed in the guide plate with a long hole bored in the longitudinal direction. In the blade opening/closing device, each of the guide plates is provided with a low rib that supports the blade closer to the blade, and each guide plate is provided with a higher rib that supports the blade further away, and the height of the higher rib of both guide plates is increased. A camera blade characterized in that the sum of the widths of the blades is equal to or greater than the distance between both guide plates, and a pair of high ribs and low ribs on at least one of the guide plates is provided near the guide pin. Switchgear. (2) The pair of low ribs and high ribs provided in the vicinity of the guide pins is a set of low ribs and high ribs provided in the vicinity of the guide pins, and is a set of low ribs and high ribs provided in the vicinity of the guide pins. The camera blade opening/closing device according to claim 1, which is provided adjacent to the hole.