JPS6088330U

JPS6088330U - Bounce prevention mechanism for movable mirror in single-lens reflex camera

Info

Publication number: JPS6088330U
Application number: JP17922683U
Authority: JP
Inventors: 大原　経昌
Original assignee: キヤノン株式会社
Priority date: 1983-11-18
Filing date: 1983-11-18
Publication date: 1985-06-17

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〜第４図は本考案実施例としてのクイックリター
ンミラー機構の動作を示すもので、第１図はフィルム巻
上げが完了し且つ可動ミラーが定位置に位置している時
の状態を示す動作説明図。第２図は撮影の為の可動ミラーを跳ね上げた状態を示す
動作説明図。第３図は撮影後に可動ミラーが復帰する途
中の状態を示す動作説明図。第４図は可動ミラーがスト
ッパーと当接する直前の状態を示す動作説明図。１・・・可動ミラー、２・・・可動ミラーのミラー復帰
支ブリング、３・・・跳ね上げレバー、３ａ・・・第１
力　　。ム部、３ｂ・・・第２カム部、７・・・跳ね上げレバー
の復帰スプリング、１５・・・ストッパー。Figures 1 to 4 show the operation of the quick return mirror mechanism as an embodiment of the present invention, and Figure 1 shows the state when film winding is completed and the movable mirror is in the normal position. Operation explanatory diagram. FIG. 2 is an explanatory diagram showing the state in which the movable mirror is flipped up for photographing. FIG. 3 is an operational explanatory diagram showing a state in which the movable mirror is returning to its original position after photographing. FIG. 4 is an explanatory diagram of the operation showing the state immediately before the movable mirror contacts the stopper. DESCRIPTION OF SYMBOLS 1...Movable mirror, 2...Mirror return support ring of movable mirror, 3...Flip-up lever, 3a...First
Power . 3b...Second cam part, 7...Return spring for flip-up lever, 15...Stopper.

Claims

[Scope of utility model registration request]

A single-lens reflex camera that has a movable mirror that is swingably installed between the photographic lens and the screen, flips up the movable mirror during photographing, and returns it to a fixed position after photographing with a stopper that regulates the stop position. In the quick return mirror mechanism, the flip-up operation of the movable mirror is performed by engaging in the flip-up direction with a first cam portion formed on a flip-up member whose swing is controlled; A second cam part is attached to the raising member to engage and follow the movable mirror in the descending direction when the movable mirror is swung back in the anti-flip-up direction, and on the other hand, the second cam part is configured to bias the movable mirror to swing back in the return direction; 1. A bounce prevention mechanism for a movable mirror in a single-lens reflex camera, characterized in that a mechanism for urging a flip-up member to swing back in a direction opposite to the flip-up direction is configured independently.