Multistage caliber shutter mechanism
An aperture and shutter technology, which is applied to the field of multi-segment aperture shutter mechanisms for cameras, can solve the problems of low aperture switching freedom, slow aperture change speed, and large shutter mechanism shape, and achieves shutter aperture switching with a large degree of freedom and a fast aperture switching speed. , the effect of small size
Inactive Publication Date: 2009-11-18
ASIA OPTICAL CO INC
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Problems solved by technology
[0006] The purpose of the present invention is to provide a multi-stage aperture shutter mechanism to solve the defects of the existing shutter mechanism such as large shape, complex mechanism, high assembly cost, slow aperture change speed and low degree of freedom in aperture switching, and to meet the needs of the market for multi-stage shutter mechanisms. Requirements for small size, low cost and high speed of aperture shutter mechanism
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[0017] The shutter mechanism of the present invention includes a base 1, a caliber switching ring 2, a caliber opening and closing ring 3, a solenoid valve motor 4, a stepping motor 5, three feathers 6 and a feather cover 7, wherein the base 1 is generally a circle Disc shape, which has a first surface 10 and a second surface 11, a central optical hole 112 penetrating through the first and second surfaces is opened in the middle, and a first positioning seat 101 is provided at the peripheral edge of one side of the first surface 10. To accept the solenoid valve motor 4, a screw hole 1011, 1012 is respectively provided along the circumferential direction of the base 1 on both sides of the first positioning seat 101, and can be matched with the screw 81 to fix the solenoid valve motor 4 on the base. On the seat 1, a square positioning post 1015 is provided at a certain distance adjacent to the screw hole 1011 along the circumferential direction of the base 1, and a circular posit...
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The present invention provides a multi-stage aperture shutter mechanism, which includes a base, an aperture switching ring, an aperture opening and closing ring, a solenoid valve motor, a stepping motor and a plurality of feathers, wherein the first surface of the base surrounds the outer periphery of the central light hole with a concave The first track groove, the second track groove, and the aperture switching ring are provided with a first sliding column, which is inserted into the first track groove and can slide therein. The caliber opening and closing ring is provided with a second sliding column, which is inserted into the second track groove and can slide therein. The feather is provided with a connecting hole and a sliding hole, the connecting hole is rotatably socketed on the first sliding post, the sliding hole is movably socketed on the second sliding post, and the feather tip extends to the center of the base The light hole and the adjacent feather tips cooperate with each other to form an optical aperture. The stepping motor and the solenoid valve motor respectively drive the aperture switching ring and the aperture opening and closing ring to rotate, thereby respectively driving the feathers to switch the aperture and open and close the optical aperture.
Description
【Technical field】 [0001] The present invention provides a multi-segment aperture shutter mechanism, in particular to a multi-segment aperture shutter mechanism for a camera whose aperture switching, opening and closing operations are controlled by two independent mechanisms. 【Background technique】 [0002] The shutter mechanism of the camera with more than three calibers can be roughly divided into one driving source, two driving sources and three driving source methods. The mechanism of the single driving source method includes the aperture mechanism and the shutter opening and closing mechanism. The opening and closing mechanism is driven by the opening and closing link and the fixed link, and the shutter is quickly closed by the spring. It uses a stepping motor (Step Motor) in the mechanism to use a certain mechanism position as a reference to distinguish the range of the actuating step area for the opening and closing of the opening and closing of the opening, so that th...
Claims
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IPC IPC(8): G03B9/08
Inventor 陈淙泽
Owner ASIA OPTICAL CO INC