DE7625490U1 - FILM TRANSPORT GEAR FOR A PHOTOGRAPHIC CAMERA - Google Patents

Description

ÄGFA-GEVAEET AKTIENGESELLSCHAFT II.08.76

10-eh-ro Leverkusen

PP 768 ^V / MP

Film transport company for a photographic camera

The invention relates to a film transport gear for a photographic roll film camera with a film transport handle, which is coupled to a film spool driver, and with a film cutting device, wherein the FiImtransportpjetriebe is designed as a planetary gear, the web of which is formed by the film transport handle or a part that can be driven by the film transport handle, during a the alternately lockable output is formed by the film reel driver and the other output is formed by a member which is blocked by a locking part controllable by the film cutting device during the film transport and is released after a picture step, with the camera in a known manner a button determining the picture step has, through which when it falls into a

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Film perforation hole, the locking part can be brought out of engagement with the member and in this case the film reel driver driving output blocked by the friction of the film reel drive and / or film is according to patent (DT-AS 21 61 078).

The invention is based on the object of making a transmission according to the main patent from simpler and easier assembling parts.

This problem is solved by the features of the characteristic Part of the main claim. Further advantageous refinements can be found in the subclaims.

Mounting a gear on a rocker that can be rotated about the axis of another gear is simpler Gear shapes and gear bearings achieved, for example, by avoiding a ring gear with internal teeth or the storage of planet gears on a gear.

The invention is described in more detail with reference to a drawing. The single figure shows a possible embodiment according to the invention.

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A film transport slide 301 of a camera according to the invention is shown which has a guide rod 501a. A leg 502a is on the guide rod 501a a limit force detent spring 502 attached. In addition, a toothed rack 503 is attached to the guide rod 501a in that its lobes 50Ja and 503b enclose the limit force detent spring 502 between them. The rack 503 therefore only has very little play opposite the transport pusher 501.

With the rack 503, a gear 504 is always in Intervention. This gear meshes with another gear 505 and when a film cassette 506 is inserted, the latter comes into engagement with the gear 507 connected to the film take-up reel of the cassette 506 Axis 509 of the gear 505 is pivotable and under the Effect of a spring 51O is pulled into a central position. The gear 505 is also under the action of a Return pawl 511 * one rotation of the gear against the sighting corresponding to the direction of film transport.

The camera also has a button 512 that scans the film perforation, with a perforation

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Hole is arranged, two attacking the button 512 Springs 513 »514 ·» the latter against the film and against it seek to pull the film transport direction, a locking lever 515 »which is rotatable about the axis 516, a Barrier test 515a and a recess 515b, wherein the recess 515b with a tab 512a of the button 512 can cooperate ^ and under the action of a spring 517ι which it against the angular end of the axis 518 of the gear 504 seeks to press, and a spring 519 that holds it seeks to push away from the Kanvigen end of the axis 518 stands. Spring 519 is stronger than spring 517- Finally is a control lever 520, which is rotatable about the axis 521 and is under the action of a spring 522, in contact a pawl 523 which is articulated on the lock drive member 524. The shutter blade is with 525 and the Trigger numbered with 526.

Upon actuation of the transport slider 501 in the direction of arrow 527, the shutter drive member is tensioned 524 and slides this over a bevel of the shutter blade behind this and also behind the trigger 526. In this case, on the pawl 523, which is under the action of a weak spring 528 and to slides along a pin 529, driving the control lever 520 clockwise,

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the pin 52Oa of which presses on the spring 519 and this tensions * The leg 519a is therefore looking for the locking lever 515 counterclockwise to dj-ehen.

During this actuation of the transport slide 501 but when you see arrow 527, the rack is also 503 carried along in this direction and drifts while the gear 504 · »that on its axis 518 through the Locking edge 515a is locked, in the direction corresponding to the film transport direction. This will make the Film is transported to the next button 512 Perforation hole collapses and a bit is taken along by the moving film. With this movement of the Button 512, the tab 512a is pivoted so far that that the recess 515d over the tab 512a falls under the effect of the strong, tensioned spring 519 »519a. This unlocks the rocker 508, so that with further movement of the slide 501 and the rack in the direction of arrow 52? the gear 504 rolls off the gear, as it is under the effect of the film and / or gear friction the latter is practically blocked. However, the transport path of the slide 501 is determined so that here

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the gear 504 with the rack 503 and the gear 505 remains in mesh.

After the film has been transported, the slide 501 is moved back into its starting position. If the trigger 526 is now actuated, the shutter drive element 524 runs off, with the shutter blade 525 being actuated. The pawl 523 and the control lever 520 also move accordingly, so that the pin 520a slides off the spring 519 and the latter relaxes. Thus, the spring can become effective and the locking lever 515 back into the locking position of the screw: irL ~ c 5 ^ 5 »5 ^? jvy ⁱ '^<lr ^ ^e «< ⁱ « n _: «o that the film is transported again via the gear wheel 504 when the rocker 508 is completely blocked. After the first short phase of this renewed film transport, the button 512 is lifted out of the perforation hole on the incline 531 and springs back into the position shown in the figure, so that the process already described can begin again.

The arrangement thus comprises, according to the main patent, a planetary gear transmission, one output 508, 518 of which is blocked during the film transport and when it is terminated

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of the film port is released as a result of the movement ι dee button, while at the same time the output 509 connected to the film reel is blocked by the film and / or transmission frictional forces, the arrangement of the gears is simpler than the planetary gear according to the main patent.

Of course, other exemplary embodiments, not shown for the sake of simplicity, are also possible. A striking device for flash lamps that can be ignited by striking or a piezoelectric * ~ £ .2 * ~ 2.2- "» ^ «» j »^^^« * α * »Λλ ··» »-λ *» 4 <«I4 ^ A flt-AiiAwriner Atta Rtk» tv »» _ hebeis 320. Instead of the lever-spring arrangement 520, 519, a lever or cam gear could be used to control the locking lever 515 ·

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Claims (1)

I I I I ^1: '"■ -a- ^u AGFA-GEVAEBT AKTIENGESELLSCHAFT. 08/11/76 10-eh-ro Leverkusen PF 768 ^V / MP 1284 ^V Expectations 1. Film transport gear for a photographic roll film camera with a film transport handle, which is coupled to a film spool driver, and with a film cutting device, the film transport gear being designed as a planetary gear, the web of which is formed by the film transport handle or a part that can be driven by the film transport handle, during one of the alternately lockable output is formed by the film reel driver and the other output is formed by a member, which is blocked by a locking part controllable by the film cutting device during the film transport and is released after a picture step, the camera in a known manner a button that determines the picture step has, through which when it falls into a film perforation hole, the locking part can be brought out of engagement with the member and in this case the film spool mit- 7625490 12/16/76 PP 768 ^V / MP 1284 ^V Slave driving output due to the friction of the film reel drive and / or Pilms is blocked according to patent (DT-AS 21 61 067), characterized in that a gear drive .'5031 504, 505) is arranged between the film transport handle (501) and the pilm spool driver (50?), In which a gear (504) on a rocker (508 ) is mounted, the rocker (508) forming the other output which can be blocked by the locking part (5 ^ 5). 2. Film transport gear according to claim 1, characterized in that a rag (5I8) on the rocker (508) is provided on which one with the button (512) interacting Locking lever (515) to block the rocker arm (5O8) against movement can attack. 3. Film transport gear according to claim 2, characterized in that the lapper (518) on the axis of the Gear (504) arranged isc. 4. Film transport gear according to one of the preceding claims, characterized in that on the rocker arm (508) 7625490 12/16.76 PF 768 ^V / MF a spring (510) engages, which seeks to pull the rocker (508) into a central position. 5. Film transport gear according to one of the preceding claims, characterized in that the button (512) is taken along a small piece of the moving film in a manner known per se after it has fallen into a perforation hole and has a tab (512a) with a recess (515b ) is assigned in the locking lever (51?). fi- F-ilmt-ran sport establishments according to one of the preceding Claims, characterized in that the locking lever (515) is under the action of a spring (517), which seeks to move it into the locked position for the rocker arm (508). 7- film transport gear according to one of the preceding Claims, characterized in that a further link (519, 520) is in operative connection with the locking lever (515) stands, through which in instinctive connection 7625490 12/16/76 PP 768 ^V / OT 1284 ⁷ With a part (524-, 523) of the locking lever (515) that is to be tensioned and which runs off in the closure sequence expired or expiring closure (524-) can be released and pivoted into its blocking position can be moved into its position releasing the rocker (508) during the clamping movement. 8. film transport gear according to claim 7 »thereby characterized in that the further link is to be tensioned and relaxed by a control lever (520) Spring (519) is formed, which in its tensioned To tie the control lever £ ζ ^ ζ} from his Soerrstelluoit seeks to move. 9- film transport gear. according to claim 6 and 8, characterized in that the spring (519) moving the locking lever (515) out of its locking position is stronger is than the spring (51?) which moves the locking lever (515) into its locking position. 10. Film transport gear according to one of the preceding Claims, characterized in that between -12- 7625498 If.t2.7i IMI I » PF 768 ^V / MF Film transport handle (501) and the movably mounted gear (504) a rack (503) is provided. 11. Film transport gear. according to claim 10, characterized in that between the rack (503) and the Film transport handle a limit force detent spring (502) is arranged. 1 sheet of drawings 7625490 12/16/76