SU1689912A1 - Programmed electronic shutter of camera - Google Patents

Description

The invention relates to photographic equipment, in particular to photographic gates with programmed exposure control, and can be used mainly in small-format automatic cameras.

The aim of the invention is to simplify the construction and increase the reliability of the valve.

The drawing shows the shutter in the cocked state, the general view

The shutter consists of a striker 1, made with a protrusion 2, which is interconnected with the trigger latch 3. The trigger latch 3 is under the action of the spring 4 On the stripe 1, the bend 5 is made and the protrusion 6 of the cocking plate 1 is under the action of the spring 7 8 and 9 closing levers connected by a spring 10. The opening lever 8 is made with a bend 11 which

interconnected with the closing lever 9, and the bend 12, which abuts against the cockpit 1 and can interact with the protrusion 6. The opening lever 8 has a finger 13 located in the slots (not shown) of the petals 14 that block the light hole 15. The closing lever 9 is two-armed

His first shoulder a interacts with the bending 5 of a scoreboard 1, his shoulder b interacts with the finger 16 of the additional lever 17 with a bar 18 mounted on it. The closing lever 9 is under the action of the spring 19. The lever 17 is under the influence of the spring 20 Anchor 18 of the electromagnet 21 is pressed the ends of the magnetic circuit (not shown) The shutter operates as follows When you press the shutter button (not shown), an electronic circuit (not shown) applies voltage to the electromagnet 21 When the shutter is released, the ledge 2 platooned plan

(L

WITH

about

00

o you

Yu

1, is disengaged with the release latch 3 and the cocking plate 1 under the action of the spring 7 moves in the Descent direction, releasing the closing lever 9 by bending 5, which is then held by the electromagnet 21 by means of an additional lever 17. At the end of the cocking stroke, its protrusion 6 releases the bend 12 of the opening lever 8, the latter under the action of the spring 10 turns counterclockwise, turning the petals 13 with the finger 13, which open the light hole 15.

After the exposure time, the electromagnet 21 de-energizes and the closing lever 9 is rotated clockwise by the action of the spring 19, turning the additional lever 17 counterclockwise. When turning the lever 9, the closing lever 9 collides with the deflection 11 of the opening lever 8. Thereafter the opening 8 and the operating 9 levers move together in a clockwise direction under the action of the spring 19. The light hole 15 is closed by the petals 14.

When the shutter is cocked, the cocking bar moves in the direction of Platoon. At the beginning of this movement, the protrusion 6 of the cocking plate 1 takes place on the path of possible movement of the bend 12 of the opening lever 8. With further movement of the cocking plate, its bend 5 rests on the first shoulder of the closing lever 9, turning it counterclockwise. With

Claims (1)

This opening lever 8 under the action of the spring 10 rotates counterclockwise until it stops by bending 12 into cocking strip 1. The angle of rotation of the opening lever 8 is obviously less than is necessary to start opening the light hole 15 by the leaves 14, therefore the light hole 15 remains closed. The additional lever 12, under the action of the spring 20, rotates after the closing lever 9 and at the end of the stroke the bark 18 of the lever 17 presses against the ends of the magnetic circuit of the electromagnet 21. After that, the cocking strip 1 engages the trigger latch 1 with its lug 2. The actuation cycle is completed. The shutter is in the initial state. The invention of the software electronic shutter of the camera, containing a cocking bar, interacting with the trigger latch, an opening lever connected to the petals and a closing lever connected to the first shoulder with the cocking plate and the interacting second shoulder to the electromagnet, characterized in that simplifying the design and increasing reliability in operation; an additional lever is inserted in it, equipped with a finger interacting with the second arm of the closing lever, while on the additional lever anovlen armature of the electromagnet, and on the opening lever the flange is formed, cooperating with a projection mounted on the shutter setting plate. Uphill sixteen f &L & c