DE1910364U - SELF-TENSIONING LOCK. - Google Patents

Description

Ρ.Α.ΟΟΊ 890-7.1.65

G-etr auclamus over registration

Voigtländer Aktiengesellschaft _t Braunschv / Eigg Berliner Strasse 55

Self-tightening spole

The invention relates to a self-tensioning lock with a drive lever causing movements of the locking sectors, the drive spring of which rests on the one hand on the drive lever on the other hand on the shutter _{release 9} the drive lever being held in its rest position by a locking lever? which is brought into the price position for the drive lever by the shutter release after which the drive spring tensioning movement

In a known lock of this type, the drive lever, which pivots during the release of the lock, adjusts with one arm a rotatably mounted cam disk against a spring acting on it. The cam disk thereby moves a control lever which is in contact with it, which in turn opens the oil closing sectors ₉ which close again due to the tinter spring force-running return movement of the cam disk and the control lever. The resulting exposure time is essentially determined by the The duration of the closing movement is determined "and it is therefore dependent on the force of the return spring and the moving masses." must <. The drive spring can in turn only be dimensioned so strongly that it can be tensioned by the user with a sumutable expenditure of force when the shutter release is actuated

in the case of the previously known shutter at about 1/40 se® , "the field of application of cameras with such shutters is limited".

You invention has as its object ₉ else thus Yer ^ ollkQ2Bm that look he thus "let ersielen with him also much shorter exposure times in this regard considerably more complex structured closures of other genera ^ z _o B d a closure of the type fangs mentioned in a simple V / * @ n so-called tension locks _{s is} equal ο

According to the invention this is achieved ₉ that two drive arms are formed on the drive lever _s in the range of motion of which a control lever directly moving the Yerschlußseectors is arranged ₉ such _{8 that} - "in a closure sequence movement 'of the drive lever initially be a drive arm the control lever in the sense of opening the shutter sectors and then his other Antriebsarai be the control lever within the meaning of Schlisßens the shutter sectors? / _e egt

In the inventive closure so the shutter sectors are opened by the moving drive lever as well as closed The drive lever therefore does not need when opening the shutter sectors the force of a-Ped he them again closing strong to overcome ₉ but he transferred to his Wsiterbewegung the shutter sectors back into the closed position "the exposure time is therefore solely by the Ablaufgeschwindigfceit the drive lever j determined Dieg, as their conflict with no γ / esentlichen forces may be relatively high," When compared to äem acquaintances equally large clamping force of the drive spring can look much kürsere exposure sides reach ^ z _o B _e 1/250 see »

The arrangements of the invention allow in a simple V / else also closure sequences with various defined Beliehtungsaeiten, ä & nn can, in an advantageous embodiment of the invention a ^ Heamvorrichtung provide ₉ which delays the movement of the drive lever, in that region ,, in which

the United conclusion sectors sur exposure are open ο this purpose sweekniäßigerweise on the drive lever a Hemmana trained beia ₈ in the Bewegungsbereieh a su "moving approach o <, <% l _e © ines Ankerhemmwerices more or less einschalfbar is," In a further embodiment of the invention, can be a T © m exposure time set forth controllable stop o _e like _e be provided ₉ of the shutter flow movement of the drive = Hebeis at the location delimited ₉ at the be a drive arm of the control lever in that position Yerbraeht has "in which the Versehlußse & gates to the open position einnehmeno This is it possible ₉ to keep the shutter open for the duration of the actuation of the shutter release "

A self-tensioning device trained in the above manner. The end is thus, despite its simple structure, performance " moderately compared to other more complicated designed closures equivalent to"

The invention is described below on the basis of an embodiment in «* Game explained »Here and also in the claims, advantageous details of the closure according to the invention are also mentioned

See it s

Pig ₀ 1 © ine plan view of the closure parts in their Huhestteilungι

Mg »2 a top view of the · shutter parts ₉ , these being shown in that position» which they assume after an exposure ^ but the shutter release button is still pressed »

In the figures, 1 denotes a mounting plate which has holes 2 in the vicinity of its edge? Which screws are used by Wimen ^ by means of which the plate can be attached to a camera housing «The mounting plate 1 has a circular opening approximately in its center, which formed the exposure opening 3 On both sides of the mounting plate

plate 1 Is there an exposure opening 5 on each of these The sefoließender pipe socket 4 fastened the bearing point for Qb; jektiY: forms part of the frame »

In two tone of the mounting plate 1 carried bearings 5 and β a rod 7 is displaceably guided ₉ on which a release slide 8 is fixed § which has a release button 9 "<. A tension spring 10 engages the. Release slide 8 and is" aimed at this in the In Figo 1 shown rest position su hold ₉ in which it rests on the bearing pin 11 of the spring 10 Di © rod 7 carries a pin 12 ₈ in its movement area - rich an arm 13 of a drive lever 14 ihiö the free end of a drive spring 15 protrude »The drive lever H is "supported in a bearing 16 pivotally Lind at a certain distance from the surface dsr mounting plate 1 in the bearing 16 and the Antriebsfede2 ^s 15 simultaneously determines $ with its other end, the arm of the drive lever H grips 17 ', the drive spring 15 has the endeavor _s 14 zn Uhrsseigersinn pivot the drive "lever"

When the release button 9 is pressed in the direction of the arrow drawn in in FIG. 1, the pin 12 moves the free end of the drive spring 15 in the same direction ₉ so that the drive spring 15 is tensioned. However, it cannot yet pivot the drive lever 14 because a las® 18 angled therefrom rests on the arm 19 of a locking lever 20 _{which can be} pivoted in a bearing 21 and is held in the rest position shown in Pig * 1 by a spring 22 ₉ in which its ana 23 touched a stop pin 24 fastened on the mounting plate 1 When a tension of the drive spring 15 sufficient to drive the final parts is reached, a projection formed on the release slide 8 hits; 25 on the arm 26 of the locking lever 20 and swivels it into the Pig. Position shown in FIG. 2 ₀ The impact of the arm 26 on the stop pin 24 also limits the movement of the release slide 8 _β

During this pivoting of the locking lever 20, its arm 19 slides τοπ the rabbit 18 of the drive lifts H a "b _$ so that under the force of the tensioned drive spring 15 it snaps into the position shown in Mg ₀ 2. This movement is caused by the impact of the Drive lever H limited to a stop screw 27 " ₀

The movement of the drive lever 14 causes opening and closing of the exposure opening 3 in the following manner.

In the area of the exposure opening 3 project two partially oriented © covering Yarsehlußsektoren 28 and 29 and seal it light-tight "The sector 28 hinges • about a pin 30 and carries a control slot 5 * 5 ° 3) he has sector 29 also has a control slot J> 2 .auf and is pivotable about a pin 33 _P which is at the same time the bearing point for a control lever 34 and a spring 35 acting on the latter "The spring 35 tries to turn the control lever 34 clockwise, and it holds it in the rest position shown in both figures, in which a control tab 3? against a stop 38 _? . which is also the location for one arm of the spring 35

it is obvious that at one counterclockwise and movement against the force of the spring 35 of the control lever 34 through the in the control slots "31 and 32 engaging control pin 36 the sectors 28 and 29 be pivoted around their bearings 30 or * 33 and the exposure aperture 3 uncover and when the Control lever 34 "close again,"

The reciprocating movement of the control lever 34 looks Toll the drive lever then H _s when in the Pig "1 dargestell-

in the position shown in FIg ₀ 2 , "

Immediately after the lever movement begins, an opening device 39 formed on the drive lever H encounters a control flap 40 of the control lever 34 protruding into its area of movement and thereby pivots the control lever 34 counterclockwise in oil, that position ₉ in which the Yev sole sectors 28 and 29 are the exposure opening 3 release «. When the control lever 34 it has reached © position ₉ slides Qffnungsaria 39 by the control tabs 40 from * Immediately thereafter applies a trained on the drive lever 14 Schließana 41 to the number of his range of motion control tab 37 of the control lever 34 ₉ whereby the latter _s supported by him acting spring 35? with closure of the lock sectors 28 vnü. 29 is returned to its starting position by swiveling in a clockwise direction ο

The 3? Ig »2 shows the hitherto described haste in this one Lags ο

When the release button is released 3 _s sees the spring 10 the trigger slide 8 again in the? Position of rest shown ig ₀ 1 surüekc in 3 This return movement is initially _9, the remains of the drive spring 15 UBterstütat in contact with the pin 12 and thereby relaxed nahesu The pin 12 is on the other hand bear against the sur Ana 13 of the drive · Hebeis = '14 and supplies this also to the initial position where _s surücko 39 must pass as seen from Figo 2 ^ be the opening arm stationary in its movement range control flap 40th Since the opening arm seen in besug to the plane of the drawing, can 39 * 'resiliently evade upwardly and the surface of the control flap 40, also in besug to · the plane of the drawing viewed ₉ of the left-hand boundary edge ran forth sur toward right edge increases ,, the opening arm 39 can slide over the control tab 40 and then spring down again,

* ~ 7 · = ■

By appropriately dimensioning the force of the drive spring 15 , the openings and closing processes of the sectors 28 and 29 described run very quickly over time _? so that you see an exposure time of s »B _e 1/250 see results _o

In order to allow this process to proceed more slowly laterally, _B by longer determinable exposure times ₉ can the movement of the drive lever 14 in the area in which the closing sectors 28 _? 29 have uncovered the lending opening 3., Be b'gert *

For this purpose an anchor escapement is provided, the "anchor 42 ton of _{which pivots a pin 43 9} which is attached to an anchor lever 44 o The anchor lever 44 is pivotally stored in a bearing 45» which is fixed in the mounting plate 1 o The fork-shaped arm 46 of the anchor lever 44 surrounds an eccentric screw 47 '& Äl in an angle lever 48 firmly screwed _s also iet which is pivotally around the bearing 45 is "a acting on a flap of the angle lever 48 a tension spring 49 that strives to rotate in the clockwise direction and thereby holds a! Pastbolsen

50 "of the Ana des Win ~ carrying the eccentric screw 47 Lever 48 is attached 9 in contact with a control curve ©

51 s the 9 extending in the radial direction _{9 is formed} on a side adjustment 52 o The Belieh · = · ttragsjs © itei & steep ring 52 is mounted on the. the viewer abg @ "opposite side of the mounting plate 1, he raid is on hand a force applied to him Belichtungsseitskala 53 against ei" ner hard mark 54 adjustable The angle lever 48 carries at the end of that arm, engages v ^ ELCHEM the mainspring 49 ₅ © inen abge ? / inkelten flap 55 »which is in contact with a serrated segment plate 56 _? which can be swiveled around a bearing pin 57. is held on the mounting plate 1 «A spring 58 fixed on the bearing pin 57 seeks to pivot the segment plate 56 counterclockwise and hold it in contact with the pipe socket 4 with a stop lug 59.» The cream 60 of the segment plate 56 meshes with one

Ritael 61, which is firmly connected to the escape wheel 62 and Together with this isUe A © is rotatable about a bearing 63 In the sense of the Tfhrseigerberwegung running swiveling of the S @ g ~ ment plate 56 is thereby sur · = · and backward movement Crimped anchor 42 in a well-known manner

With the position of the ropes shown in Pig * 1, the escapement takes its longest exposure time since! beeinflussszKle position, a ₉ * Date of 1/50 see at the set exposure © «given istο _s check if b i © VerschluSauslösung of the drive lever already described above · 14 has moved up into the position in which its opening arm 39, the sectors 28 and 29 in the exposure opening spent 3 position releasing "arrives at it even further trained check arm 64 to a projecting into the moving range of approach 65 of the segment plate 56 * During the further movement of the drive lever 14 pivoted this now nor the segment plate 56, and the their movement braking Hemmwerk 60 ₉ 61 62 ₉ 42 delay the pivoting of the drive lever 14 in the one Bev / egungs "ber © i © h ₉ which lies between the opening of the shutter sectors 28 ₉ 29 and the beginning of the closing movement _9, the _p as already described ^ by the impact of the locking arm 41 on the control tab 37 of the control lever 34 takes place »If the drive lever 14 this © position j, in which he the sectors 28 ₉ 29 moved back into the closed position _? has reached _g , the 'Heinmarm 64 slides from the Ansats 65 due to its different path of movement out of its range of movement so that the remaining _{movement of the drive lever 14 is again unaffected by the inhibitor o} The movement of the drive lever 14 is thus only inhibited while the lock is open, so the exposure time is extended and SoBo is 1/30 see »

When the Belichtungszeiteinstellring 52 is set to the scale value "1/60 see" or "1/125 see" _B koiamen other parts of the cam 51 with the Sastbolsen 50 into contact ₉

as a result of which the angled handle 48 moves against the force of the spring 49 · its tab 55 pivots the segment plate 56 in the direction of the clockwise direction? so that the distance swisehen their approach 65, and the inhibitor arm 64 is increased. The at a shutter release moving driving lever 14 thus comes against the Torbeschriebenen case time not so long äxmgo with the Hemmwerk in getriebliche Yerbin- Further, in the development by the other exposure time setting tilting of the angle lever 4β over its Exsenterschratibe 47 of the armature lever 44 to ver ~ schwenkts whereby the position of the armature 42 and thus changing the penetration depth in the escape wheel 62 «with a lower depth of engagement of the armature 42, the escapement wheel 62 can move more freely _s so that a faster Hemmwerksablauf results ο the movement delay of the driving lever 14 thus takes place in the adjustment Shorter exposure times both by the fact that its duration of engagement with the inhibitor is changed and by influencing the speed of movement of the inhibitor o The eccentric screw 47 enables the precise determination of the relative position of the levers 44 and 48 β

In the position of the parts shown in FIG. 2, their illumination side is set, in which the movement of the drive lever 14, which has already been described at the beginning, takes place through the part of the control cam 51 which acts on the Sästbolsen 50 in this setting position is the angle lever 48 namely, brought into a position ₉ in which its attachment δ5 is outside the range of motion of the inhibiting arm 64. This results in the shortest loan-to-earning side in the example of 1/250 seconds

To get the exposure time "B" ₉ so a Yerschlußoffenzeit for the duration of the release button actuation, see below ^ are the following arrangements provided?

On the exposure side adjustment ring 52, besides the one on the inhibitor * plant-acting control cam 51 still has a tax rate 66

- 10 -

to

angebracht9 then ₈ when reference to the scale 55 wnd the mark 54 ₉ acts on a Begrengungshebel Sl of Beliehtungsseitwert "B" is set $ which is in a bearing 68 swingably 'of Begrensungshebel by a spring 69 67 with its Abtastansatsa 70 in system to & en Beliehtungszeitelnstellring 52 and the control projection 66 maintained at the exposure time one partition "B" of the Stetieransatz 66 holds the Begrensungshebel 67 in a position ^ in whose boundary flaps 71 in Bewegungsbereieh of the arm 17 of the drive lever 14 is _β in a shutter release snaps the arm 17 of the drive lever 14 against the limit tabs 71 and is at its further movement hindered This movement limitation is effected at the point ₉ at which the opening arm 39 of the drive lever 14 the control lever has pivoted to that position 34 ^ in which the shutter sectors 28 _t 29, the exposure opening have completely released 3 ₉ but the opening arm 39 is not yet off the steering rlappen 40 has slipped «Against the force of the spring 35 acting on the control lever 34, the stronger drive spring 15 holds the opening _{arm 39 on the control tab 40 firmly 9} until, when the release slide 8 j 9 and its rod 7 move back, their pin 12 on the arm 13 hitsj whereby the drive lever H is returned to its starting position «, the retracting opening arm 39 follows _{9 moved} by the spring 35 ₉ the control lever 34 nash ₉ which brings the sectors 28, 29 back into the closed position» In this case, therefore, is not from the closing arm 41 of the drive lever 14, the closing movement of the closing sectors 28, 29 took place

11th

Claims (12)

1) SelbstspaanversehX & ß inducing a movement of the shutter sectors drive lever ₈ whose drive spring on the one hand rests against the Antriebhebelj other hand, on Yersehlußauslöser ₉ wherein the drive lever is held by a locking lever in its rest position _(s by the Versehlußauslöser after which the drive spring exciting movement in the release "position for the drive lever is moved ₉ daduret characterized ₉ that at Antriebhebe.l (14) SWEi drive arms {39 _s 41 are formed) _g a, the Yersehlußsektoren (28 29) "moving. control lever (34) is arranged in the BewegungsTbereich _s immediately ', so _? that when Versehlußablaufbewegung of the drive "? Hebeis (14) initially to be a drive arm (59) the control lever (34) in the sense of opening the? ersehlußsektoren (28 ₉ 29) and then its other drive arm C 41) the control lever (34) in the sense of closing the locking sectors (28 ₉ 29) · moved 2) Yerechluß according to claim 1, characterized by swei locking sectors (28 and 29) »which in a known manner each have a control slot (31 or» 32) and a _s on one side that engages in both slots (31, 32) 'Control lever (34) fixed to the control pin (36) o _o like _o have ,, wherein the control lever (34) SWEi diametrically its Lagerste3.1e au (33) control flaps lying (40 BAW _o 37) trägtj Opdglp, one of which (40) Movement area of one and the other (37) in the movement area dea the other of the two drive arms (39 bsw »41) of the drive lever (14 5 is arranged o 3) Closure according to claims 1 and 2 _S characterized ^ that the bearing point (16) of the drive lever (14) and the bearing point (33 5 of the control lever (34) are arranged to each other that the around the bearing point (16) of the drive lever (14) "running trajectory of the drive» arm (39) £ ÜR opening the Versehlußse & gates (28 ₉ 29} laid the extending about the bearing point (33) of the control lever (54) Bewegungsbshn. of the moving through this Power unit (39) control flap (40) then ₉ when the Versehlußsektoren (28 , 29) are fully open _g auseto = · run across ₈ γ / o through the ¹ opening arm (59) «ad of the opening _{tabs (40) slide from one another o} 4) Closure according to claims 1 to 3 »characterized ,, that formed on the drive lever (H) drive arm · (41 ■) £ ÜR the closing of shutter sectors (28, 29) and äex on the control lever (34) trained ₉ with this Closing arm {41) susammanarbeitende control tabs (37) are arranged to each other _{9 so} that they only come into contact with each other ^ when the opening arm (39) of the drive lever (14) has slipped off the opening tab (40) of the control lever (34) » Are 5) Closure according to claim 1, characterized by © ine direction, "the movement of the driving lever (14) in that region in which the delayed _s Versehlußsektoren (9 28 29) sur exposure opened" 6) Closure according to claim 5 _S, characterized in ₉ . that the inhibiting device can be adjusted to different lengths of travel delay of the drive lever (14 5 » 7) Closure according to claim 5 and S ₅ characterized ₉ that a check arm (64) is formed on the drive lever (14) ₅ in whose range of motion in to moving Ansats (65) o, a Ankerhemmwerkes dglο (56 _g 62 ₉ 42) more or is less sustainable " 8) Closure according to claim 7 »characterized in that the in the range of motion of the inhibitor arm (64) can be switched on Attachment (65) is arranged on a toothed segment plate (56) which is provided by an exposure time adjuster (52) movable lever (48) is adjustable in different starting positions «. 9) Closure naoh claim 7 and 8 _S characterized ₉ that the Yom BelichtUBgszeiteinsteller {52) "movable lever (48) for oil adjustment of the segment plate (56) with an armature (42) of the escapement bearing. Armature lever (44) 'coupled is, so _s that 'depending on the respective setting of the lever {48), the armature lever (44) is placed in positions in which the armature (42) engages more or less deeply in the escape wheel (62) for the purpose of differently influencing the escapement process «, 10) Closure according to claim 9, characterized in that the lever (4S) which can be moved from the Belichtungsseiteinsteller (52 5) for the adjustment of the segment plate (56) and the anchor lever (44) are connected to one another by an adjustable coupling ₀ 11) "The closure of claim 9 and 1O ₉ characterized ₉ that the Belichtungsaeiteinsteller (movable 52) lever (48} for setting the segment plate (56) are mounted and the armature lever (44) coaxial with each other and the anchor lever (44) with a fork-shaped arm (46) encloses an adjusting screw (47) mounted in the lever (48) 12) closure according to claim 1 and 5? marked by a from the exposure time adjuster (52) controllable stop (67) Oodglos of the shutter sequence movement of the Drive lever (H) limited at that point at which its one drive arm (39) the control lever (34) in has spent the position in which the locking sectors (28, 29) assume the open position. Hei / Sl