JPH01135428U

JPH01135428U -

Info

Publication number: JPH01135428U
Application number: JP3104388U
Authority: JP
Priority date: 1988-03-09
Filing date: 1988-03-09
Publication date: 1989-09-18
Anticipated expiration: 2003-03-09
Also published as: JPH0540503Y2

Description

[Brief explanation of the drawing]

第１図ないし第３図は本発明によるカメラのバ
リヤ機構の第一の実施例を示すもので、第１図は
バリヤ開放状態、第２図は同閉塞状態を示す第４
図―線に沿う断面図、第３図は開閉ピンと中
間レバーの関係を示すスケルトン図である。第４
図は本考案によるカメラのバリヤ機構を備えたレ
ンズシヤツタ式カメラの全体を示す断面図である
。１３…固定筒、２０…カム環、３０…バリヤ機
構、３１…レンズカバー筒、３２…アパーチヤ枠
、３２ａ…アパーチヤ、３３…バリヤリング、３
４…バリヤ、３５，４０…ピン、３７…線ばね部
材、３９…中間アーム、３９ａ…作用腕、３９ｂ
…被動腕、４１…開閉ピン、４１ａ…駆動腕、４
３…連動角孔、４５…切欠、４６…軸、４７…閉
塞レバー、４８…トーシヨンばね。 1 to 3 show a first embodiment of the camera barrier mechanism according to the present invention, in which FIG. 1 shows the barrier mechanism in an open state, and FIG. 2 shows the barrier mechanism in the closed state.
Figure 3 is a sectional view taken along the line, and Figure 3 is a skeleton diagram showing the relationship between the opening/closing pin and the intermediate lever. Fourth
The figure is a sectional view showing the entire lens shutter type camera equipped with a camera barrier mechanism according to the present invention. 13... Fixed tube, 20... Cam ring, 30... Barrier mechanism, 31... Lens cover tube, 32... Aperture frame, 32a... Aperture, 33... Barrier ring, 3
4... Barrier, 35, 40... Pin, 37... Wire spring member, 39... Intermediate arm, 39a... Working arm, 39b
...Driven arm, 41...Opening/closing pin, 41a...Drive arm, 4
3... Interlocking square hole, 45... Notch, 46... Shaft, 47... Closing lever, 48... Torsion spring.

Claims

[Scope of Claim for Utility Model Registration] A lens cover tube having an aperture on its front end face is supported so as to be movable in a straight line between a photographing position and a storage position behind this, and a lens cover tube having an aperture attached to the outer periphery of the lens cover tube as it rotates. A cam ring is installed to move this lens cover tube between the shooting position and the storage position.
In the camera barrier mechanism, a pair of barriers for opening and closing the aperture and a barrier opening/closing mechanism for opening and closing the pair of barriers in conjunction with rotation of the cam ring are provided at the front end of the lens cover tube. The barrier opening/closing mechanism includes a pair of barriers that open and close the aperture; a spring means that biases the pair of barriers in the opening direction; and an opening/closing pin that has a pair of drive arms and is movable in the radial direction of the lens cover barrel; a pair of intermediate levers, one end of which is engaged with a driven arm of the opening/closing pin, and a working arm of the other end of which is engaged with a pair of barriers; the opening/closing mechanism is opened/closed when the lens cover tube is retracted to the storage position; barrier closing means for pressing the pin against the spring means and closing the barrier via the intermediate lever, and the pair of drive arms of the opening/closing pin and the driven arms of the pair of intermediate levers A barrier mechanism for a camera, characterized in that as the lever moves in the barrier closing direction, the point of application of the force moves away from the axis of the intermediate lever.