DE1869252U - PHOTOGRAPHIC SHUTTER. - Google Patents

Description

Photographic shutter

The invention "relates to a photographic shutter with a sector drive ring and one with the same cooperating, comprising an actuating part Facility to open the sectors for intermediate observation, wherein the sector drive ring has a radial arm, with the end of which is arranged on the circumference of the closure and an opening coupling having a driver opening can be brought into and out of engagement in a controlled manner by a link guide is.

In such devices on single-lens reflex cameras, it is known that the lock-side gear for open and close the locking sectors during the intermediate observation via gear parts, which be held in engagement by force closure. This is so disadvantageous than that which produces the frictional connection Spring closed due to material defects or excessive wear Tends to break, which of course impairs operational safety.

It is the object of the present invention to avoid these disadvantages and to provide a simple, structurally and manufacturing cheap and reliable design of the opening device

j limited liability company &.

Co; Munich. J Photographischeri Ver

_ 2 - rsdJuß. 3α 1, (S. C 10138. (T. H; 2.4)

721 / 1s / Web 509 Gm

to accomplish.

This object is achieved in that the Operating shaft and the opening coupling working together Carriers are assigned, v / elche after a through a "certain Angular range made movement of the actuating shaft come into positive engagement and the opening coupling from the sector-closed position into the sector-off move the setting, and which when moving the

Actuating shaft in turn a positive engagement

[for the purpose of taking the opening coupling from the sector open

t. establish position up to the sector closed position,

{■ while moving back over the starred Winlcel-

■: disengage the area.

According to a further feature of the invention, there is one

j advantageous design of the device in that with the Operating a driver arm is firmly connected, whichever alternately with a flap of a freely rotatable mounted on the actuating shaft with the opening coupling hinged disc or cooperates with a tab on the opening coupling itself.

Furthermore, there is another, expedient embodiment according to another feature of the invention in that the actuating shaft has a driver arm, a resilient one evasive I-driver pawl carries and the pivot for forms a disc hinged to the opening coupling with a tab, this tab alternately either

j limited hardening company ß.

Co., Munich. J Photographic

- 3 - That's it. 1/30/65. C 10138, (T. 14; 2. 4)

721 / 1s / Web 509

cooperates with the driver arm or the driver pawl.

The invention is explained in more detail in the following description using two exemplary embodiments. Show it:

Pig. 1 the lock seen from the front with the front panel removed and in the rest position,

Pig. 2 and 3 the back of the closure according to Pig. I. with the sector opening device in two different Operating positions,

Pig. Figure 4 is a view in the direction of Figure 4. 2 registered Arrow "A", and

Pig. 5 to 7 show another embodiment of FIG Sector opening device in three different operating positions.

A single-lens reflex camera with an actuator for instant mirror return is in the German Auslegeschrift 1 138 618. The exemplary embodiment for the present invention is based on this type of camera largely, so that in the following only the different embodiment of the opening device on the closure closer is explained.

To a light passage opening 1 of a lock housing 2 are locking sectors 8, which have curved slots 5, around bearing pins 10, which are fastened in the lock Grandplatte

■% *> .. Ψ ⁰ } - I 869252. Oompur-Werfc, vjweixsaian with reduced liability &. ^C ° _? ί ¹ "? *« ¹ · J Photograpfosdi « closure. 30.1, 65. G 10138. (Γ. 14; line 4)

721 / 1s / Web 509 Gm

are rotatably arranged. A sector drive ring 4 is rotatably mounted on the optical axis coaxially and carries control pins 6 projecting into the cam slots 5 of the locking sectors 8. The closing sectors 8 can be opened and closed by rotating the sector drive ring 4 about the optical axis. These movements of the sector drive ring 4 are limited by stop pins 9 and 11 which are fixedly arranged in the locking housing 2. The sector drive ring rests against the pin 9 with a radial arm 13 and against the pin 11 with a stop edge 17. The Sektcrenantrie ^"bsr: .ng 4 carries a axialfedernden opening pin 12 and on .: radial · - Ar ™ 13 a lock pin 14 · The locking pin 14 v / hich at its Yorderende has an inclined surface 15 which is defined by the radial arm 13 guided to the rear, and connected to a leaf spring, not shown, which strives to hold the pin resiliently in the axial direction.

A main drive member 16 of a known type, for example shown in utility model 1 674 673, acts on the pins 12 and 14. The H _a uptantriebsorgan 16 is arranged rotatably about a shaft 18 and is under the action of a drive spring, not shown, which loads it clockwise. It has a radial opening slap id en 21 and a radial closing flap 22, which work in a known manner with the pins 12 and 14 during the external and clockwise sequence. The closing flap 22 has a working edge 23 and a peripheral edge 25

Co., Munich. J Photographic closure. 3ftl.gr. · C 10158. (T. 14; 2. 4)

- 5 - January 29, 1963

721 / 1s / Web 509

on. The third edge of the closing flap 22 delimits a downward sloping surface 29 in the rest position the main drive element rests against the working edge 23 a stop pin 7, v / elcher is fastened in a front plate (not shown) of the lock housing 2.

By drive means, which are not shown in the drawing, the main drive member 16 can counterclockwise v / ground rotated to its clamping position. One by one: in the lock housing 2 stationary pin 26 rotatable release lever 24, which is loaded by a spring 27 counterclockwise, falls at the end of the spa ': nv organ-: it behind a radial lobe of the main drive organ 16, with the lobe 28 in another Level than the tabs 21, 22 lies.

In Fig. 1 the closure is shown in the expired state. A weak spring 30, which is on a stationary pin 32 of the Sector drive ring 4 acts, prevents inadvertent movements the locking sectors.

Fig. 2 to 4 show the rear of the closure with a fixed there Holding plate 20, which has a control edge 20a and a stop edge 20b. Through a circumferential slot 3 of the lock housing 2 protrudes the radially elongated end 13a of the; Sector ring arm 13 out of the breechblock housing. An orifice coupling 46 is on the free end of one on the retainer plate 20 mounted disc 40 rotatably arranged about a pin 33. That Opening coupling 46 has a control curve 46a, a v / more pus

-ρ - ',, - Γν .1869252. Goepär-Weric * i, Limited Liability Company & M ^ _{0 M} Co ₁ . Munich. J Photographic conclusion 21.3.63. 1/30/65! C10138 ^ Cr.H; Z. 4) f

- 6 - January 29, 1963 /

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Control cam 46b and a rearwardly bent tab 46c. The free end of the opening coupling 46 is designed as a tab 46e parallel to the optical axis with a driver opening 46f so that it can grasp the radial arm 13a of the sector drive ring 4 and release it again. Two guide pins 47a and 47b are on both sides of the opening coupling 46 in the holding plate 20 used stationary, the former with the control cam 46a and the latter with the control cam 46b to sa "" ..: achieved The rocker 40 has a tab 40a and a second tab 40b, the free end of a directional spring 45 being supported on the latter, which tries to turn the disk 40 clockwise ^v : merscheibe 48 is arranged with a driver arm 48a, which is fixedly connected to a locking-side opening shaft 36c in a rotational movement e 36c, the driver disk 48 is firmly connected, while the disk 40 is arranged freely rotatable on this shaft.

The Yfelle 36c is rotated by the shaft (40c ¹ ) of the camera-side gear shown in the above-mentioned disclosure. This rotary movement begins when the

Camera shutter release and is clockwise before exposure and counterclockwise after exposure / directed. The shaft 36c thus connects the sector opening on the lock side with the gear unit on the camera the single-lens reflex camera.

1 869 252. Compur plant -. limited liability &.

January 29, 1963 £, 721 / ls / WelD 509 Gm

Pas opening the non-passage opening after the actual Exposure assumes that the sector drive ring 4 is released from the main drive member 16 for this movement is »This is made possible by the fact that the closing flap of the main drive member 16 with its working edge at the end the closing movement that the. Exposure finished by the locking pin 14 slides and thus releases it. Before this, there is an undesirable opening movement of the sector drive ring 4 as a result of the backlash: when the radial arm 13 occurs, this prevents the stop pin 9 from bouncing, that the peripheral edge 25 of the closing flap 22 after sliding of the locking pin 14 can slide along the working edge 23 on the locking pin 14 and the rebound in the process dampens.

In Pig. 2 shows the members of the opening device in the operating position shortly after an exposure process has been carried out. The opening shaft 36c, which is rotated counterclockwise (viewed from the rear of the shutter) by the mentioned camera-side means immediately after a picture has been taken, takes the drive plate 48 firmly connected to it with it in the same direction, with the drive arm 48a of the drive plate after approximately 185 ° angular rotation 48 slides past the tab 46c and comes into contact with the tab 40a of the disk 40 after an angular rotation of approximately 270 °. This angular path is sufficient to bring the mirror into the observation position. Only now is the disc 40 through the entrainment ram 48a and Qegen the force of the

Limited liability company a M _Λ ' ο μ Cp ₇ Munich. J Photographic Completion. 11. O.DJ. 1/30/63. C 10138, ίΤ 14 7_4 \ ί

- January 8 - January 29, 1963 '

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Spring 45 taken along until its tab 40b on the stop edge 20b occurs. Up to this stop position the opening shaft 36c with drive plate 48 has covered an angular path of 360 °. Due to the articulated connection 33 between disk 40 and opening coupling 46, the opening coupling is to the left when the disk is moved pushed forward, the control cam 46a sliding along the guide pin 47a and the lamps 46e along the control chain 20a, so that the 1. driver opening 46f engages the arm 13a and the sector drive ring 4 in the open position of Sectors that slide for mirror observation. The La / pen 46c des The opening coupling 46 is in the operating position according to FIG. 3 just before the i-itneh ^ eria. = ;? «*! 48a. During the open position of the sectors for Spiogel observation takes place the tensioning of the Closure, v / obei the Ha ^ ptantriebsorgan 16 by not shown Means is turned counterclockwise * (Fig. 1). The closing flap 22 of the main drive member strokes during this rotation via the axially resiliently resilient locking pin 14.

Before the exposure process, the sectors must be out of the open position according to Fig. 3 are moved back into the closed position. This happens - as soon as the camera release (not shown) is actuated - in that the described camera-side Transmission lets the Y / elle 36c run clockwise from the position of FIG. 3. At the beginning of this return movement the driver arm 48a comes with the tab 46c of the coupling 46 engaged, the same inevitably being pulled to the right

with special liability &. 30.1. rf C 10138; (T. 14; 2. 4)

721/1 s / Web 509 Gm

and the sectors are closed via the sector drive ring. The control cam arrives at the end of the closing movement 46b with the guide pin 47b in contact, whereby the Opening coupling is controlled so that the driver opening 46f releases the arm 13a. So that is the opening device completely separated from the sector drive ring 4 again (Pig.2). The spring 45 now again holds the disk 40 and the opening coupling 46 in this operating position. When turning further on shaft 36c, the radial driver on 48a slides off the tab 46c from and also the shaft 36c with the drive plate take up the starting position again. Finally, the main drive element 16 begins - after the locking lever 24 has been triggered through the gearbox on the camera side - to expire and the exposure process is carried out in the manner described.

5 to 7 show a somewhat different embodiment of the opening device on the closure. The parts corresponding to FIGS. 1 to 4 are provided with corresponding reference numerals. In a departure from the first example, a double-armed pawl is arranged on the drive plate 48 so that it can rotate about the pin 48b. One arm of this pawl is denoted by 50a and the other arm by 50b, the latter having a control edge 50b ¹ , a further control edge 50b ' ¹ and a driver edge 50b

¹ ' ¹

having.

A straightening spring 52 wound around the pin 48b tends to move the pawl 50 clockwise against the somewhat protruding one To push the end of the opening shaft 36c. The opening coupling 46 ',

; 57 »,. 32/01. I869Z52. Compur-Werfc j Society fragrance with limited liability fi. Co., Munich. J Photographic shutter. 30. 1.63. ClOm (T. 14; Line 4)

- Io - 2g. January 1963 **

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which is connected in an articulated manner to the disk 40 in the manner explained in connection with the first exemplary embodiment, v / e is a rearwardly bent tab 46g ¹ and a stop edge 46h ^! on.

The mode of action of this second type is as follows:

In Fig. 5 the members of the opening device are shown shortly after an exposure exposure has been carried out. The opening shaft 36c rotates counterclockwise immediately after it has been picked up and takes along the drive plate 48 firmly connected to it in the same direction. Since the pawl 50 is rotatably mounted on the driver disk 48, it is also rotated in a clockwise direction. After approximately 220 angular rotation, the control edge 50b 'of the ratchet arm 50b comes into contact with the tab 40a, slides on the inside of this tab when the opening shaft 36c is further rotated and, after sliding, comes into contact with the tab 46g ¹ under the action of the spring 52. In the meantime, the hip limiter arm 48a has reached the lobe 40a, and now takes it with it. As a result, the opening coupling 46 'is now carried along, the tab 46g ¹ now moving away from the control edge 50b ^{11 of the latch arm 50b.} The driver edge 50b ¹¹¹ now snaps behind the tab. 40a a. As a result, the parts 40 and 50 assume a position which results in their positive engagement immediately when the return movement begins. By moving the opening coupling 46 'to the left, the sectors S are described for intermediate observation in

, Limited company with Hfefomg & Co .. Munich. J Photographisdxer ^Ver * uB - ³ O- ¹ -W. C 10138, (T. 14; line 4)

- 11 -

January 29, 1963 / -. 721 / I s / Web 509

has also been opened.

The return movement of the opening gear on the shutter is initiated by the camera release (not shown), the sectors being moved back from the open position to the closed position. The gearing on the camera side allows the cell 36c to run counterclockwise so that the drive plate 48 and the pawl 50 mounted on it are rotated in the same direction. At the beginning of this return movement, the driver edge 50b '·' grasps the lamp 40a of the disk 40 and inevitably ignores it. As a result, the opening coupling 46 'is sucked to the right and the sectors are closed in the described manner. The spring 45 now again holds the disk 40 and the opening coupling 46 'in this operating position (FIG. 7). The end stop for this position is reached when the opening coupling strikes with its stop edge 46h ¹ on the guide pin 47a. Before reaching the operating position according to FIG. 7, the control edge 50 "b" of the pawl arm 50b comes ^{into contact with the tabs 46g 1 of} the opening coupling 46 'during this closing movement of the sectors, so that the pawl 50 is gradually rotated counterclockwise until the engagement between the drive edge 50b ¹ 'and the tab 40a is released. From this moment on, the shaft 36c and the drive disk 48 connected to it continue to rotate in sequence, with the control edge 50b ^fl and then the control edge 50b ¹ of the latch arm 50b slides along the inner edge of the tab 40a until the latter moves away from the

■% * '»Ψ ⁰ } - ¹ I ⁶⁹ Z ^ - Compar-Werk j Geselkchafl with limited liability &. Co Mh I Pfahb

Geselkchafl with limited liability &. Co .. Munich. I Pfaotographbchex closure. 1/30/65: C 10138. (T. 14 | line 4)

- January 12 - January 29, 1963 j

721 / 1s / Web 509 Gm

flaps 40 a separates, so that then the pawl 50 through the Spring force 52 moves "clockwise" and assumes its original position. Shortly thereafter, the Y / elle 36c with the drive plate 48 and the pawl 50 do not move into their initial position. Finally "begins the main drive organ after triggering the locking lever 24 to run in the described manner, whereby the exposure process is triggered.

The inventive design of the transmission parts on the locking side for opening and closing the locking sectors for the observation of the gap has the advantage that when the actuating shaft 36c is moved, the locking sectors are rotated into the open position by positive locking between IJitnehmerarn 48a and tabs 40a and also in the opposite direction, i.e. when the operating shaft is turned back Y / elle 36c is rotated back in the closed position by a positive fit between tab 40a and tab 46c or between tab 40a and driver edge 50b '· ¹ . This results in an error-free opening and closing movement of the links and the simplest structure and parts-saving construction of the opening device.

Claims (2)

Protection claims 1. Photographic shutter with a sector drive ring and one working with the same, one Operating shaft comprehensive device to open the Sectors for intermediate observation, the sector drive ring having a radial arm with which One end, one arranged on the circumference of the connection, and one carrier opening exhibiting .; Opening;: coupling through a Link guide can be brought into and out of engagement in a controlled manner, characterized in that the actuating shaft and drivers cooperating with the port coupling are assigned, which after a movement of the actuating shaft has taken place over a certain angular range get into positive engagement and the opening coupling from the sector closed position into the sector open position move, and want a positive engagement with the return movement of the actuation shaft for the purpose of Uitηahme the opening coupling from the sector open position up to the sector closed position while they move back over the disengage certain angular range. 2. Photographic shutter according to claim 1, characterized in that that a driver arm (48a) is firmly connected to the actuating shaft (36c), v / elcher alternately either with a rag (40a) one on the IFTTi " ir 3.63 ■■ -., :: - i - 14 - 29 * January 1963- ■ - / - 72l / La / vVeb 509 Actuating shaft freely rotatably mounted disc (40) articulated to the opening coupling (46) or with a rag (46c) on the opening coupling (46) cooperates himself. 3 »Photographic shutter according to claim 1, characterized in that the actuating shaft (36c) has a driver arm (48a) on v; ei st, carries a resiliently evasive driver pawl (50) and forms the pivot for a ^{disc (40) hinged to the opening coupling (46 1} ) with a tab (40a), v / obei this tab alternately with either the driver arm or the driver pawl cooperates.