Classifications

• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
  • G03B9/00—Exposure-making shutters; Diaphragms
  • G03B9/08—Shutters
  • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
  • G03B9/18—More than two members
  • G03B9/22—More than two members each moving in one direction to open and then in opposite direction to close, e.g. iris type

Definitions

• the invention relates to a device for synchronizing
• Swivel axis is rotatably mounted.
• the applicant's earlier patent application 10 2009 020 287.0 discloses a photographic central shutter in which a plurality of shutter blades are pivotably mounted on an annular plate carrier.
• the shutter blades are attached to the outer bottom of a cup-shaped pivot arm. Into the cup-shaped opening of the
• Schwenkarmes is the pivot axis of the shutter blades
• each pivot arm At the outer pot edge of each pivot arm engages an actuating device for triggering the pivoting movement.
• Swivel arm is fixed and whose other free arm on
• an annular open cam plate is provided.
• the cams When turning the cam disc around the closure opening, the cams each lift over a flank the individual pivot arm for rotation about its pivot axis.
• the complete opening of the central closure is achieved when the pivot arms of the shutter blades each rest on a cam head under the tension of the coil spring. In this position, the rotation of the cam can be stopped or continued continuously. After completion of the holding function of the swivel arm falls down due to the clamping force of the coil spring from the cam head in a Nockental, ie in the closed position of the central closure.
• Shutters can therefore lead to uneven covers the shutter opening.
• the invention therefore an object of the invention to ensure a smooth flow of the shutter blades.
• Synchronizing disc arranged, which is coupled to each of the pivot arms. The coupling takes place via a s.der
• Synchronizing disc nose-shaped, radially outwardly facing slot At the pivot arms a pin is attached at a suitable location, each of which positively in an associated
• the synchronous ring disk is placed during assembly on the one hand on the pivot arms driving cam and on the other hand covered by annular discs.
• the synchronizer ring becomes
• the synchronizer ring can be made very thin and light, so that for their entrainment at the end of the shutter blades no special additional forces
• the synchronizer ring itself exerts no original control function, but compensated by their mechanical coupling of all pivot arms only irregular delays in the expiration of the individual shutter blades.
• the relief of a parking function can be supported by the fact that the pivot arms run in the open position against a freely oscillating spring leaf, which additionally abuts the return of the pivot arms.
• FIG. 1 and 2 An embodiment is shown schematically in the drawing. 1 and 2, the synchronizer ring disc 1 is shown in engagement with a pin 2 on a pivot arm 3 in the closed position and in the open position of the shutter blades 4.
• the pivot arms 3 are rotatably mounted about pivot axes 5, which are fixed to an annular disk carrier, not shown.
• the pins 2 engage positively in slots 6, which are nose-shaped radially outwardly facing formed on the outer periphery of the synchronizer ring 1.
• the distance of the lugs with the slots 6 corresponds to the distance of the pivot axes 5 on the plate carrier.
• the pins 2 are positioned on the pivot arms 3 so that the formed on the synchronizer ring disk 1 lugs with the slots 6 during pivoting of the pivot arms 3 are rotated by the pins 2 of the pivot axes 5 away.
• Synchronringring 1 is rotated back and forth in the bearing surfaces, not shown.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Shutters For Cameras (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Priority Applications (3)

Applications Claiming Priority (4)

Publications (1)

Family

ID=43754682

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (4)

Citations (7)

Family Cites Families (10)

• 2010
  • 2010-05-15 DE DE102010020638.5A patent/DE102010020638B4/de not_active Expired - Fee Related
• 2011
  • 2011-01-18 EP EP11701747.5A patent/EP2526460B1/de not_active Not-in-force
  • 2011-01-18 US US13/574,691 patent/US8534935B2/en not_active Expired - Fee Related
  • 2011-01-18 JP JP2012549285A patent/JP2013518293A/ja active Pending
  • 2011-01-18 WO PCT/EP2011/000187 patent/WO2011088984A1/de not_active Ceased

Patent Citations (7)

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