JPH0185821U

JPH0185821U -

Info

Publication number: JPH0185821U
Application number: JP18095787U
Authority: JP
Priority date: 1987-11-30
Filing date: 1987-11-30
Publication date: 1989-06-07

Description

[Brief explanation of the drawing]

第１図ａ，ｂ，ｃは本考案に係るフイルム巻上
げ制御装置を適用してなる一眼レフカメラの一実
施例を示す要部構成図およびその部分的な両側面
図、第２図はカメラの撮影動作を説明するための
タイムチヤート、第３図ａ，ｂは巻上げモータ制
御用のフローチヤート、第４図は本考案を適用し
て好適な一眼レフカメラの概略側断面図である。１……チヤージカム（制御カム）、１４……カ
ム面（タイミングスイツチ作動用カム部）、１４
ａ……最大カム部、１４ｃ……張出しカム部、１
５……タイミングスイツチ、３０……小型一眼レ
フカメラ、４０……フイルム巻上げ用の電動モー
タ。 Figures 1a, b, and c are main part configuration diagrams and partial side views of an embodiment of a single-lens reflex camera to which the film winding control device according to the present invention is applied, and Figure 2 is a partial side view of the camera. 3A and 3B are flowcharts for controlling the winding motor, and FIG. 4 is a schematic side sectional view of a single-lens reflex camera to which the present invention is applied. 1...Charge cam (control cam), 14...Cam surface (cam part for timing switch operation), 14
a...Maximum cam part, 14c...Overhanging cam part, 1
5...Timing switch, 30...Small single-lens reflex camera, 40...Electric motor for winding film.

Claims

[Scope of utility model registration request]

The control cam is equipped with a control cam rotationally driven by an electric motor that winds the film, and a timing switch that is activated and reset by the rotation of the control cam. A cam portion for operating a timing switch is formed to return the electric motor to a stop signal at the end of the film winding rotation, and when the timing switch is activated by this cam portion, the cam portion is driven via a delay timer to the electric motor. A film winding control device characterized by being provided with a duty drive circuit that decelerates the speed by passing an intermittent current.