CN1303470C - Camera with a shutter setter - Google Patents

Abstract

A kick type shutter device constituted so that a shutter speed is made lower without causing unevenness of exposure. In a night view photographing mode, a delay lever (60) is energized clockwise, and the leading end part (60a) is brought into contact with the circular arc surface (32d) of a fan-shaped projection (32c). When a pawl part (32a) is kicked by the kick arm (45a) of a shutter driving lever (45) in accordance with a release operation, a shutter blade (32) is rotated clockwise so as to open an exposure aperture. Just after this, the leading end part (60a) enters a groove (32e) so as to interrupt the return action of the shutter blade. After a lapse of nearly fixed time from the start of rotating the shutter driving lever (45) by a governor mechanism, a pin (60b) is pushed by a delay release lever, then, the delay lever (60) is rotated counterclockwise, then, the leading end part (60a) is retreated from the engagement position with the fan-shaped projection (32c), then, the exposure aperture (31a) is closed by the shutter blade.

Description

Camera with shutter device

Technical field

The present invention relates to a kind of camera with shutter device of the pressure release type that does not produce the exposure spot and slow down shutter speed.

Background technology

In the simple and easy camera of the disposable camera etc. of band lens,, and adopting the shutter device that is known as so-called pressure release type for certain cost degradation.The shutter device of pressure release type makes the blade of rotary type trend towards closing the original position of exposure opening by recovering spring, makes it along throwing away in the opposite direction with trend side, blade is back and forth rotated, the switch of the opening that exposes.

Easy camera, the shutter speed of shutter device was set to 1/100 second～1/150 second, and the aperture of photographic lens is the fixed aperture of F8～F11.This be because: when film was ISO400, suitably brightness was the LV11 degree, and the light quantity outside the room at noon is the degree of LV10 (cloudy day)～15 (fine day) relatively, and over-exposed a little setting, but the situation of egative film are in the wide cause of over-exposed side exposure latitude.

And, under the photography conditions of the deficiency in light quantity of as the night scene photography, photographing, drive built-in flasher and carry out strobo photography.But, in this strobo photography, be positioned to wait and shine flash of light and become correct exposure, but the background flash of light can not reach apart from the personage of camera 2～3m, in addition because light quantity is LV6～7 degree, so with the difference of correct exposure be that 4～5EV is almost black.Like this, form extremely factitious photo.

If the difference of above-mentioned 4～5EV will be changed to correct exposure by aperture, then aperture is F1.4～F2.8.That is, photographic lens itself must have this lightness, and can not realize for camera at a low price.And, because scape depth as shallow being shot, so on aspect focusing or the image quality, have problems.For depth of field degree being shot, in the simple and easy camera that can not focus, for example, the focal length of photographic lens is the situation of 35mm, needs the degree for F5.6 at least.Thereby shutter speed must slow down.

The spy opens the disposable camera of band lens slow when disclosing a kind of shutter speed when making strobo photography than general photography in the 2001-22035 communique.The disposable camera of these band lens, when the elasticity rate of the recovery spring by switching blade when strobo photography is generally photographed a little less than, and the shutter speed will generally photograph the time is to slow to 1/60 second in 1/150 second.In addition, for the shutter speed that slows down, the method that postpones the blade switch by governor motion is arranged also.

As the device of the shutter speed that slows down, in camera relatively at a low price, electric devices such as the piston of employing are arranged also, and in the simple and easy camera of the disposable camera of band lens etc., but can not adopt.In addition, in the above-mentioned communique, when strobo photography, make shutter speed slow to 1/60 second, even but the photography of the night scene of corresponding LV6～7 degree 1/60 second also was not enough.Utilize the identical method shutter speed that further slows down, when strobo photography, make the elastic force that recovers spring become more weak, even but owing to almost do not change during with general photography by throwing the speed of opening the exposure opening away, also slack-off by the speed of recovering spring answer blade, so the closing velocity of exposure opening is slack-off significantly, it is poor to produce light quantity in the exposure image of film.In addition, based on the slow door of above-mentioned governor motion, closing velocity is still slack-off significantly owing to comparing with the opening speed of blade, so it is poor to produce light quantity in the exposure image of film.

Summary of the invention

The object of the invention is to provide a kind of and has at a low price, do not produce the exposure spot, can slow down the camera of shutter device of the pressure release type of shutter speed.

In order to achieve the above object, camera with shutter device of the present invention, by the direction that trends towards closing the exposure opening, the blade of switch exposure opening, with move opposing trend to throw blade away by corresponding shutter release operation, and in the shutter device of the pressure release type that the shutter driver part of switch exposure opening is constituted, be provided with: open the state locking blade of exposure opening and stop the closing motion holdout device of closing the action of exposure opening by blade with above-mentioned blade, with throw above-mentioned blade away and after time delay, remove through regulation by closing motion holdout device locking blade and allow the closing motion of the closing motion of exposure opening to allow device.

In addition, throw parts away at the quilt of being thrown away by the shutter driver part that moves by corresponding shutter release operation, with the direction that trends towards closing the exposure opening, the blade of coupled switch exposure opening constitutes in the shutter device of pressure release type with being thrown away the throwing action away of parts, is provided with: the state of opening the exposure opening with above-mentioned blade stops to be thrown away the action of parts and stops the closing motion holdout device of being closed the action of exposure opening by blade, with the closing motion permission device of throwing above-mentioned blade away and the action prevention of exposure opening is closed in releasing by the closing motion holdout device after the time delay of process regulation.

In addition, be provided with and forbid stoping the closing motion of exposure opening, carrying out delay inhibiting apparatus forthwith by blade switch exposure opening by above-mentioned closing motion holdout device.In addition, be provided with above-mentioned delay inhibiting apparatus interlock, the state that stops at the closing motion of the opening of forbidding exposing, the aperture that will dwindle the aperture area of exposure opening inserts camera axis, at the state that the closing motion that allows the exposure opening stops, replace said aperture aperture/optical filtering that the optical filtering of regulation inserts camera axis is inserted device.

Description of drawings

Fig. 1 is the stereographic map that the outward appearance of camera of the present invention is implemented in expression.

Fig. 2 is the exploded perspective view of the main inner structure of expression camera shown in Figure 1.

Fig. 3 is the stereographic map of the basic comprising of expression shutter device.

Fig. 4 is shutter device is observed in expression from the face side of camera a vertical view.

Fig. 5 is the shutter device of charged state is observed in expression from the top a vertical view.

Fig. 6 is the shutter device that discharges the state that finishes is observed in expression from the top a vertical view.

Fig. 7 is the key diagram of the relation of expression shutter driving stem, blade and delay bar.

Fig. 8 is each chart that moves of the blade of the general photograph mode of expression and flash photography mode (A) and night scene photograph mode (B).

Fig. 9 is the relation of shutter driving stem and adjuster bar is observed in the expression expression from the inboard a key diagram.

Figure 10 is the vertical view of the governor motion of expression charged state.

Figure 11 is the vertical view that expression discharges the governor motion of the state that finishes.

Figure 12 is the vertical view of the relation of expression saw-toothed gear wheel of governor motion and armature.

Figure 13 is the delay bar of general photograph mode of expression and flash photography mode and the vertical view of the relation that postpones changer lever.

Figure 14 is the delay bar of expression night scene photograph mode and the vertical view of the relation that postpones changer lever.

Figure 15 is the expression mode selector button, mode switch plate, aperture board of closing the state of lens shield, and the key diagram that postpones the relation of bar etc.

Figure 16 represents just to open mode selector button behind the lens shield, mode switch plate, aperture board, and the key diagram that postpones the relation of bar etc.

Figure 17 is mode selector button, mode switch plate, aperture board, and the key diagram that postpones the relation of bar etc. of expression flash photography mode.

Figure 18 is mode selector button, mode switch plate, aperture board, and the key diagram that postpones the relation of bar etc. of expression night scene photograph mode.

Figure 19 is the key diagram of the embodiment of another blade of expression.

Figure 20 is the key diagram that expression is provided with the aperture board of cross curve optical filtering.

Among the figure: 10-camera, 15-mode selector button, 16-lens shield release knob, 30-shutter assembly, the 31a-opening that exposes, 32, the 81-blade, 32c, 80c-fan-shaped projection, 34, the 90-aperture board, 34a, 91-aperture openings, 38-mode switch plate, 41-photograph mode ejector return pin, 42-lens shield, 45-shutter driving stem, 45a-throws arm away, 46-locking lever, 47-stationary cam, the 52-adjuster bar, 60-postpones bar, the 65-governor motion, and 70-postpones relieving rod, 75-postpones changer lever, 80-is thrown away parts, 82-driving stem, 92-cross curve optical filtering.

Embodiment

Adopt among Fig. 1 of simple and easy camera 10 of shutter device of the present invention in expression, in the front of camera body 11, be provided with photographic lens 12, thing side view finder window 13, flashlamp illuminating part 14, mode selector button 15, and lens shield release knob 16.In addition, finish display window 19 and rewinding of number window 18, the charging that on camera body 11, shutter release button 17 is arranged, shows the photography frame number with handle 20.And, in the rear side of camera body 11, be provided with pulleying rotating disk 21 that every bat 1 frame just is rotated operation, by an eye side view finder window, and carry out the bonnet (not shown) of switch during the film filling.

Mode selector button 15, operating when switching to flash photography mode or night scene photograph mode from general photograph mode, in the recess 22a on being formed at housing 22, be moved upward and just can switch to strobo photography, just can switch to night scene mode from this position to dextrorotation again.In flash photography mode and night scene photograph mode, continue to charge to the flasher 23 (with reference to Fig. 2) that is built in the camera body 11.When flasher 23 charging finished, LED light lamp was bright, and the cameraman can be confirmed by the charging display window 19 that finishes.After charging finishes, press shutter release button 17, flashlamp illuminating part 14 flashes of light in shutter action.

As shown in Figure 2, in camera body 11, be provided with body base 25.On body base 25, be formed with the 25a of film chamber and the film take-up chamber 25b of the spool box main body of filling master film box, at their pars intermedia, become to have slit 25c and camera bellows 25d.In addition, flasher 23 is installed above the 2a of film chamber.

Above the 25b of film take-up chamber, dispose pulleying rotating disk 21 free to rotately, its underpart one is equipped with the spool in the 25b of film take-up chamber.Along counterclockwise rotating among the figure, and the film roll that will pull out from the spool box main body is on spool and be rolled onto in the 25b of film take-up chamber by pulleying rotating disk 21.In addition, in the present embodiment, film adopts the egative film of ISO400.

On the top of the above-mentioned camera bellows 25d of portion, be formed with the peristome 25e and the cone 25f that connect to insert the sprocket wheel 28 that the perforation with film locks together.In addition, in sprocket wheel 28 inside, group goes into to limit the shaft coupling 29 of sprocket wheel 28 along direction rotation.

In the 25d of camera bellows portion, shutter assembly 30 is installed.This shutter assembly 30, go into to have shutter charging mechanism etc. by group, and forwardly be formed with exposure opening 31a shutter base portion 31, free to rotate be installed in this front portion, be used for blade 32, demarcation strip 33, aperture board 34, release lever 35, the group of switch exposure opening 31a go into by the lens subassembly 36 of above-mentioned photographic lens 12, and synchro switch 37 formed.Above-mentioned demarcation strip 33 is located between blade 32 and the aperture board 34, so that they do not interfere with each other, is formed with circular open 33a on light path of photography.

In the back of above-mentioned mode selector button 15, be provided with and its interlock and mobile along the vertical direction mode switch plate 38.On this mode switch plate 38, be formed with slotted hole 38a, be formed on a pair of protuberance 25g, 25h on the wall of the 25a of film chamber and connect and insert wherein, mode switch plate 38 can be moved freely along the vertical direction.In addition,, be formed with little protruding 38b at the sidepiece of mode switch plate 38, and and be formed between the protruding 25i on the wall of the 25a of film chamber and constitute squelch mechanism.In addition, near protruding 38b, be formed with to it with flexible slotted hole 38c.

Above mode switch plate 38, dispose aperture changer lever 39, by the rising of mode switch plate 38, protruding the elastic rod 38d and the aperture changer lever 39 that form along the horizontal direction of mode switch plate 38 locks together, and it is boosted, in view of the above, aperture changer lever 39 rotates in the counterclockwise direction.

On aperture changer lever 39, sealed aperture board 34, aperture board 34 rotates along with the rotation of aperture changer lever 39, and the aperture openings 34a that is formed on the leading section of aperture board 34 can insert or take off in the camera axis L of photographic lens 12.In addition, only the photographic aperture based on exposure opening 31a is F5.6 (a night scene photograph mode), and the state in the camera axis L that aperture openings 34a is inserted photographic lens 12, photographic aperture become F8 (general photograph mode and flash photography mode).In addition, at the gear part 39b of aperture changer lever 39, the gear part 40a of shutter speed changer lever 40 described later in interlock.

Be formed on the protuberance 16a at the back side of lens shield release knob 16, connect in the hole 41a that inserts photograph mode ejector return pin 41.If lens shield release knob 16 is slided to the closing direction along continuous straight runs with the fixing lens shield 42 of its one, then also along continuous straight runs slip of photograph mode ejector return pin 41, the leading section 41b that is formed taper of photograph mode ejector return pin 41, lock together with the 38f of roller portion of the tilting bar 38e that is formed slopely to the bottom of mode switch plate 38, therefore mode switch plate 38 is retracted downwards.In view of the above, the charge switch 23a of flasher 23 (with reference to Figure 15～Figure 18) be in closed condition, can prevent the consumption in vain of power supply.

In Fig. 3～Fig. 5 of the basic comprising of the shutter assembly 30 of expression shutter charged state, blade 32 is installed in formed pin 31b place on the blade base 31 free to rotately.In addition, blade 32 trends towards counterclockwise by volute spring 44, stops up exposure opening 31a and remains on original position.

Top at shutter base portion 31, be provided with photography the time throw away blade 32 and switch exposure opening 31a shutter driving stem 45, with its locking the locking lever 46 of charge position and with sprocket wheel 28 coaxial settings, and, shutter driving stem 45 and adjuster bar described later 52 (with reference to Fig. 9, Figure 10) are fixed on the stationary cam 47 of charge position along with film transmits.

On shutter driving stem 45, be formed with the claw 32a that is used to throw away blade 2 the hook 45b that throws arm 45a away, connects with the semi-circular plate 48 of stationary cam 47, be located at protruding 45c that the protruding 46a on the locking lever 46 connects, with the protruding 52a of the adjuster bar 52 of governor motion described later lock together be located at following protruding 45d, and connect with adjuster bar 52 axial regions and limit throw away after the protruding 45e (with reference to Fig. 9) of position.In addition, sealed the end 51a who trends towards the anticlockwise disc spring 51 of Fig. 5 at the rear portion of protruding 45c.

On locking lever 46, be formed with locking pawl 46a, protruding 46b, discharge 46c, and end the 46d of volume portion, and on the set axle in the top that is installed in shutter base portion 31 free to rotate.This locking lever 46 trends towards clockwise direction in figure by disc spring (not shown).The protruding 46b of locking lever 46 connects with the protruding 45c of shutter driving stem 45, and shutter driving stem 45 is remained on charge position.

Locking pawl 46a is provided with in the mode that enters the breach 55a that is out of shape plectane 55.Volume ends portion 46, locks together the rotation of rolling shutter 21 is locked with the peripheral part groove 21a that is formed on pulleying rotating disk 21 during the clockwise direction rotation in figure at shutter driving stem 45.After the 46c of release portion pressed shutter release button 17, the pressing tablet (not shown) of the bottom by being formed on shutter release button 17 was pushed, and locking lever 46 contrary pin direction in figure is rotated.

On stationary cam 47, be provided with distortion plectane 55, and thereunder be provided with semi-circular plate 48 and second half plectane 49 successively.On distortion plectane 55, as mentioned above, be formed with the breach 55a of the locking pawl 46a that receives locking lever 46.Semi-circular plate 48 is in the hook 45b of its periphery butt joint shutter driving stem 45.In addition, semi-circular plate 49 is in the hook 52b of its periphery butt joint adjuster bar 52.In addition, on the top of distortion plectane 55, be provided with and make the individual gears 56 that shows tally (not shown) rotation of photography frame number from number window 18.

Blade 32 trends towards counter clockwise direction among the figure by volute spring 44, stops up exposure opening 31a usually and also remains on original position.When photography by with shutter release button 17 push and the shutter driving stem 45 of interlock action is thrown claw 32a away, along clockwise direction rotating opening exposure opening 31a among the figure.Then, the elastic force by volute spring 44 makes blade 32 return back to original position.The bar-shaped protruding 32b of blade 32 closes above-mentioned synchro switch 37 (with reference to Fig. 2) at the exposure opening when 31a opens.

In Fig. 7, blade 32 is formed with fan-shaped projection 32c near claw 32a.Circular-arc the 32d of this fan-shaped projection 32c is along the circular arc of the rotation track of blade 32.In addition, between claw 32a and fan-shaped projection 32c, be provided with groove 32e.And, relative with fan-shaped projection 32c to the position be provided with coaxial and as the delay bar 60 of closing motion holdout device with stationary cam 47 free to rotately.This delay bar 60 trends towards clockwise direction by disc spring 61.

Postpone bar 60 at the night scene photograph mode, be allowed to tend to clockwise direction, circular-arc the 32d of its leading section 60a and the protruding 32c of fan-shaped connect [Fig. 7 (A)].Thereby, after the shutter driving stem 45 that push by shutter release button 17 moves is thrown blade 32 away, the state that the leading section 60a of delay bar 60 opens exposure opening 31a with blade 32 enters groove 32e, stops the exposure opening 31a of blade 32 to be returned to closing direction [Fig. 7 (B)].

Postponing on the bar 60 pin 60b to be set uprightly.This sells 60b, allows the delay relieving rod 70 (with reference to Figure 10) of device rotating in the counterclockwise direction through the elastic force of being pushed to the right side from the drawing left side, making postpone bar 60 opposing disc springs 61 behind the certain hour by the closing motion as governor motion.In view of the above, remove the blade 32 that is prevented from and be returned to closing direction, close exposure opening 31a.Promptly only stop the shutter speed that slows down the actuation time of blade 32 by postponing bar 60.

As shown in Figure 8, in general photograph mode and flash photography mode, to be about 1/125 second (A) relative with shutter speed, makes shutter speed become about 1/15 second slow (B) by postponing bar 60 in the night scene photograph mode.In addition, because be somebody's turn to do slow door, for opening speed, the closing velocity of exposure opening 31a, also with general not variation of shutter speed, so in the exposure picture, can not produce light quantity poor (exposure spot).In addition, photographic aperture is the aperture openings 34a of the aperture board 34 of F8 in general photograph mode and flash photography mode because make, and avoids from camera axis L in night scene photograph mode (B), so photographic aperture becomes the F5.6 based on exposure opening 31a.

In Fig. 9～Figure 12, drive the governor motion 65 that postpones relieving rod 70, constitute by adjuster bar 52, accelerating gear row 67, saw-toothed gear wheel 68 and armature 69, and be configured in the top of shutter base portion 31 respectively with locking lever 46 coaxial settings.Adjuster bar 52, except that above-mentioned protruding 52a, hook 52b, also be formed with gear part 52c, and by an end with link up with disc spring 71 that 52b connects and trend towards counter clockwise direction among Figure 10.

On the top that postpones relieving rod 70, be formed with guide protrusion 72, the gear 73 of fan-shaped.Gear 73, with the gear part 52c interlock mutually of adjuster bar 52, and with the gear 67a interlock mutually of accelerating gear row 67.Guide protrusion 72 is formed elongated sickle shaped, is supported on the following of gear part 52 and it is guided, and realizes the interlock of the gear part 52c and the gear 73 of adjuster bar 52 reliably.

From Fig. 9 of the relation of inboard observation shutter driving stem 45 and adjuster bar 52, in the shutter charged state, the protruding 52a of adjuster bar 52 and the protruding 45d of shutter driving stem 45 lock together in expression, make adjuster bar 2 lockings at charge position (A).If shutter driving stem 45 is then thrown off the sealed of protruding 45d, 52a along clockwise direction rotation among the figure when photography, adjuster bar 52 can rotate along clockwise direction among the figure.

In view of the above, along counterclockwise beginning rotation the figure, but regulated by armature 69, therefore postpones relieving rod 70 rotational speeies and be delayed by the rotational speed of saw-toothed gear wheel 68 from shutter charged state shown in Figure 10 for adjuster bar 52.Carry out the clockwise direction rotation if postpone relieving rod 70, then postpone relieving rod 70 pushing pin 60b and make and postpone bar 70 and rotate in the counterclockwise direction, leading section 60a is from avoiding with the fan-shaped projection 32c position that locks together, and (with reference to Figure 11) moved in the answer of beginning blade 32.

As Figure 13～shown in Figure 180, postpone relieving rod 70 below, the delay changer lever 75 that the conduct coaxial with it postpones inhibiting apparatus is installed free to rotately.This postpones changer lever 75, trend towards clockwise direction by disc spring 76, during except that Figure 14 and night scene photograph mode shown in Figure 180, the elastic force claw 75a pushing pin 60a of opposing disc spring 61 makes and postpones bar 60 and turn to not the position that locks together with fan-shaped projection 32c in the counterclockwise direction.

In addition, when the night scene photograph mode, the bar 40b of above-mentioned shutter speed changer lever 40 promotes to be formed on the protruding 75b of the bottom that postpones changer lever 75, and opposing disc spring 76 elastic force rotate delay changer lever 75 in the counterclockwise direction.In view of the above, the elastic force by disc spring 61 postpones bar 60 and is turned to the position that can lock together with fan-shaped projection 32c along clockwise direction.

Mode selector button 15, the protuberance 15a of the below slightly of the central portion by standing in this back side can free be installed in the formed hole of antetheca of camera body 11 (not shown) up or down.In addition, pin 15b uprightly is being set, is locking together with the hole 38g of mode switch plate 38 at the downside slightly of protuberance 15a.In addition, on above-mentioned protruding 25i, be formed with the 25i of edge portion, recess 25k, the 25l of edge portion that the protruding 38b of mode switch plate 38 locks together.In addition, at mode switch plate 38 back sides, be provided with in and the set pair of terminal 77 of the side surface part of the 25a of film chamber between constitute flasher 23 the short circuit of charge switch 23a with electric connecting plate 78 (with reference to Figure 15～Figure 18).

Use the camera 10 of this formation, carry out film filling after, rotate pulleying rotating disk 21 the 1st frame be set in slit 25c.At this moment, with film movements sprocket wheel 28 rotation, stationary cam 47 counterclockwise rotates along drawing.With semi-circular plate 48,49 rotations of stationary cam 47 one, hook 45b, 52b that promotion connects with it make shutter driving stem 45, adjuster bar 52 rotations, and are fixed on charge position respectively.In addition, the direction that sprocket wheel 28 is only rolled by shaft coupling 29 along film is rotated and is not reversed.

Lens shield release knob 16 is carried out slide along evolution to (left of Fig. 1) exposes photographic lens 12.And then, mode selector button 15 is in the position of below, and protruding 38b is in the general photograph mode that locks together with edge portion 251.If switch to flash photography mode, mode selector button 15 is moved upward from general photograph mode.Be locked together in the lock together noise (with reference to Figure 17) of suppression mode switch boards 38 of protruding 38b in the edge portion 251 and recess 25k.At this moment, along with moving of mode switch plate 38, short circuit makes pair of terminal 77 short circuits with electric connecting plate 78, and the charge switch 23a of flasher 23 connects the charging action of beginning flasher 23.

If switch to the night scene photograph mode, then make the position dextrorotation of mode selector button 15 autoflash photograph modes.As shown in figure 18, pin 15b promotes the edge of hole 38g and the top of mode switch plate 38 to the position of flash photography mode is boosted.In view of the above, protruding 38b moves and locks together with the 25j of edge portion of top from recess 25k and suppresses noise.Even under this state, also keeping charge switch 23a is on-state.

And, because the bar-shaped protruding 39a of elastic rod 38d and aperture changer lever 39 locks together, and boost this projection, the institute so that aperture changer lever 39 rotate in the counterclockwise direction.The aperture openings 34a of aperture board 34 avoids camera axis L, photographic aperture from the F8 based on aperture openings 34a change to based on the exposure opening F5.6.In addition, along with aperture changer lever 39 rotates to counter clockwise direction, shutter speed changer lever 40 rotates along clockwise direction, and bar 40b promotes protruding 75b.

As shown in figure 14, rotates in the counterclockwise direction because postpone changer lever 75, the rotation of removing based on the delay bar 60 of claw 75a stops, so the elastic force of delay bar 60 by disc spring 61 can rotate along clockwise direction.In view of the above, shown in Fig. 7 (A), postpone the leading section 60a of bar 60 and circular-arc the 32d of fan-shaped projection 32c and connect.

If the cameraman confirms that at finish display window 19 of charging the charging of flashers 23 presses shutter release button 17 after finishing, then the 46c of release portion is by the pressing tablet place that is pressed in shutter release button 17, and locking lever 46 counterclockwise rotates to state shown in Figure 6 around figure from state shown in Figure 5.In view of the above, throw off the sealed of protruding 45c, 46b, being in charge position shutter driving stem 45 can counterclockwise rotate by the elastic force of disc spring 51.

Throw the pawl 32a that arm 45a throws blade 32 away away, blade 32 rotates along clockwise direction among the figure, opens exposure opening 31a.Meanwhile, because bar-shaped protruding 32b connects synchro switch 37, so, glisten to subject from flashlamp illuminating part 14.In addition, blade 32 will expose after opening 31a is in standard-sized sheet, and shown in 7 (B), the front end 60a that postpones bar 60 enters among the groove 32e.In view of the above, leading section 60a is locked together in and will stops the answer action of blade 32 on the end difference of the fan-shaped projection 32c of the blade 32 that the direction of closing exposure opening 31a is replied.

On the other hand, along with the rotation of shutter driving stem 45 is separated the sealed of protruding 45d, 52a, adjuster bar 52 begins to rotate in the counterclockwise direction from charge position shown in Figure 10.Adjuster bar 52 makes and postpones relieving rod 70 rotations, but by by accelerating gear 67, saw-toothed gear wheel 68, and the governor motion that constitutes of armature 69, can make to postpone relieving rod 70 and be rotated at leisure.

Rotating beginning from shutter driving stem 45 roughly passes through certain hour and (behind the 30ms～125ms), postpones relieving rod 70 pushing pin 60b and make and postpone bar 60 and rotate in the counterclockwise direction.In view of the above, the leading section 60 that postpones bar 60 is avoided the position that locks together with fan-shaped projection 32c, and blade 32 is returned to original position and closes exposure opening 31a[with reference to Fig. 7 (c)].Its result, the shutter speed of night scene photograph mode become about 1/30 second～1/8 second.

In view of the above, main subject such as personage is carried out correct exposure by flash of light, and if light value is the dusk of the degree (when using the film of ISO400) of LV6～7, do not open the background of flash of light and can expose photographic photograph with suitable level (1～2EV under-exposure) yet with scene.In addition, the opening speed of blade 32 and closing velocity are because all be all mutually at a high speed with general photograph mode and flash mode, so even be 1 blade 32, it is poor also can not produce light quantity on the exposure picture, the photograph of spot of not exposing of can photographing out.

In general photograph mode and flash photography mode, because aperture board 34 is inserted among the camera axis L, and delay changer lever 75 is stoping and is postponing the rotation of bar 60 to the blade side, so, make blade 34 speed-sensitive switches exposure opening 31a by the action of throwing away based on shutter driving stem 45 of pressing along with blade 17.In view of the above, photograph with aperture F8, shutter speed about 1/125.Under the situation of flash photography mode, in the time of can be with exposure opening 31a standard-sized sheet, from 14 flashes of light of flashlamp illuminating part.In addition, the photography under fine day is about the overexposure of 2EV degree, but in the tolerance scope of egative film, actual damage not.

When interrupting or finish photography, lens shield release knob 16 carries out slide along closing direction (Fig. 1's is right-hand), closes photographic lens 12.In view of the above, as shown in figure 15, because the leading section 41b of photograph mode ejector return pin 41 and the 38f of roller portion lock together and along below medium pull-back mode switch boards 38, so short circuit separates from terminal 77 with electric connecting plate 78, the charge switch 23a of flasher 23 disconnects, to prevent electric consumption in vain.

In addition, because aperture board 34 returns to original position and is inserted into camera axis L, and remove based on the pushing of the protruding 75b of the bar 40b of shutter speed changer lever 40, make and postpone bar 60 and turn to not with fan-shaped projection 32c locks together and avoid the position so postpone the pawl 75a pushing pin 60b of changer lever 75.That is, hiding after release knob 16 opens photographic lens 2 to mobile lens, becoming the general photograph mode of frequent use at once along evolution.

Photographed behind whole frame numbers of film of filling, one presses and rewinds button (not shown), and the groove 21a that then unties pulleying rotating disk 21 and volume end the sealed lock of removing pulleying rotating disk 21 of the 46d of portion.Secondly, what pull-up was fallen down rewinds with after the rotary turnplate 20, makes it to rotate the egative film that photography is finished and refunds to the spool box body.Afterwards, as long as open bonnet, with regard to recoverable spool box main body.

Secondly, throw away among parts and blade Figure 19 at the quilt that expression will be thrown away by the throwing arm 45a away of shutter driving stem 45 as the embodiment of independent parts, thrown away parts 80 and be from above-mentioned blade 32 and omitted shape after the part of closing the exposure opening, and trended towards counterclockwise by disc spring 44.By being thrown away on the parts 80, identical with above-mentioned blade 32, be provided with by throwing the claw 80a that arm 45a thrown away away and clipping groove 80b and have circular-arc fan-shaped projection 80c.Side upright at this fan-shaped projection 80c is provided with bar-shaped protruding 80d.

Being thrown away parts 80 1 sides, is that the center is provided with the driving stem 82 that drives blade 81 free to rotately with rotation axis 83.This driving stem 82 has 2 arm 82a, 82b, and trends towards clockwise direction by disc spring 84.An arm 82a who is formed the へ font connects with above-mentioned bar-shaped protruding 80a, and the pin 85 that uprightly is located at the leading section of another elongated arm 82b connects among the slotted hole 81a that inserts blade 81.

Before carrying out shutter release operation, shown in (A) figure, bar-shaped protruding 80d is docked at the peak portion 82c place of arm 82a.Carry out shutter release operation, after the claw 80a that is thrown away parts 80 was thrown away arm 45a and throws away, the elastic force of opposing spiral disc spring 44 makes to be thrown away parts 80 and is rotated along clockwise direction, and bar-shaped protruding 80d pushes the 82c of peak portion of arm 82a securely.Owing to be in the position of close rotation axis 83 for the 82c of peak portion of this point of force application, and be in position for pin 85 away from rotation axis 83 to the application point of blade 81, so when bar-shaped protruding 80d crossed the 82c of peak portion, pin 85 made blade 81 high-speed rotation (B) in the counterclockwise direction.

After bar-shaped protruding 80d crosses the 82c of peak portion, because bar-shaped protruding 80d connects with the rake 82d that closes on the circular arc of this track, so blade 81 almost stops to the rotation of opening direction.Then, elastic force by disc spring 44 makes to be thrown away parts 80 and is rotated in the counterclockwise direction, and the elastic force by disc spring 84 rotates driving stem 82 along clockwise direction, and blade 81 rotates along clockwise direction, returns to the original position separately shown in (A).

Secondly, in Figure 20 of another embodiment that represents aperture board, be installed in as aperture/optical filtering and insert aperture board 90 on the aperture/optical filtering changer lever 89 (parts identical) of device, fixing the cross curve optical filtering 92 that forms by transparent plastic in the free end 90a one that forms aperture openings 91 with said aperture changer lever 39.Cross curve optical filtering 92 is that to be used in the pointolite be the optical filtering of center when for example sending 6 bundle light (radiance), can shoot photograph dazzling as star luminous in the night scene.In addition, in Figure 20, parts same as the previously described embodiments are being used identical symbol.

Because if mode selector button 15 autoflash photograph mode position dextrorotation are set in the night scene photograph mode, then mode switch plate 38 is upwards pushed away by the position from flash photography mode again, the bar-shaped protruding 89a of elastic rod 38d and aperture/optical filtering changer lever 89 locks together, and it is boosted, institute so that aperture/optical filtering changer lever 89 rotate in the counterclockwise direction.In view of the above, replace aperture openings 91 and cross curve optical filtering 92 inserted among the camera axis L.In addition, can set the radiance number and the angle of cross curve optical filtering arbitrarily, for example, also can be the crosswise of 4 bundles.In addition, also can replace the cross curve optical filtering and use various optical filterings such as sheen optical filtering or Fog filter.

Above-described embodiment, be to use the situation of the egative film of ISO400, but use the situation of the egative film of ISO800, be preferably in general photograph mode and the flash photography mode, aperture is F11, shutter speed is about 1/125 second, at the night scene photograph mode, aperture is F6.7, shutter speed is about 1/15 second, in this case, because it is corresponding with light value LV11 in general photograph mode and flash photography mode, corresponding with light value LV6.5 in the night scene photograph mode, the exposure of desirable about 4.5EV is poor, so can take the photograph of correct exposure with the scene of wider width.

In addition, in the above-described embodiments, carry out the shutter charging by sprocket wheel, but also can directly carry out by the rotation of pulleying rotating disk with the film movements of rolling and being transferred.In addition, also can carry out film transmission and shutter charging by motor.

In addition, in the above-described embodiments, use governor motion for the answer action that postpones blade, but also can use mechanical type or DYN dynamic timer, after the shutter driving stem is thrown action away, the delay bar is moved on to from the insertion position and avoid the position through certain hour.

In addition, in the above-described embodiments, when slow door, with the corresponding aperture of opening of night scene photography, but also can be on the contrary by stop down and corresponding with up short.That is, only the slow down part stop down of shutter speed just can be taken the photograph of correct exposure.For example, use the photographic lens of focal length f=28mm, and the egative film situation of use ISO400, in general photograph mode, get and make shutter speed and focus beyond 1.2m in 1/125 second, aperture F8 (EV value=13, LV value 11), in the up short pattern, get and make shutter speed and focus beyond 0.55m in 1/15 second, aperture F22 (EV value=13, LV value 11).

In addition, in the above-described embodiments, the pair of terminal that constitutes the charge switch of flasher is located at the side of film chamber, but also above-mentioned pair of terminal can be installed on the flash of light substrate of flasher, and with electric connecting plate it is carried out short circuit with short circuit.In addition, also can on the flash of light substrate of flasher, small-sized switch be set, utilize the projection that is located at mode switch backboard face that it is carried out ON/OFF.In addition, the foregoing description be the camera of simple type, but the present invention is not limited thereto, also can be the disposable camera of band lens.

(effect of invention)

As mentioned above, according to the camera with shutter device of the present invention, because with the shutter blade Open the state locking shutter blade of exposure opening, can stop by the shutter blade and close the exposure opening Action, and after throwing the shutter blade away, the process regulation is removed the locking of shutter blade time delay, Allow the closing motion of opening, so do not change the opening action of the exposure opening of shutter blade With closing motion, wherein stop the action of shutter blade can realize slow door. Its result can not produce Give birth to the exposure spot, shutter speed can qurer slows down.

In addition, because the state of opening the exposure opening at the shutter blade stops the motion thrown away parts, Stop by the shutter blade close the exposure opening action, and throw away thrown away parts after through Allow the time delay of regulation to be thrown away the motion of parts, so do not change the exposure of shutter blade The opening action of opening and closing motion wherein stop the action of shutter blade can realize slow door. Its result can not produce the exposure spot, shutter speed can qurer slows down.

In addition, because arrange forbid stoping expose the closing motion of opening, carry out by soon forthwith The delay inhibiting apparatus of door leaf switch exposure opening, thus can make shutter speed switch at a high speed, Low speed is photographed, and can be respectively correspondingly with noon, night scene be able to suitable exposure. In addition, because of For forbidding stoping the state of closing motion of opening of exposing, aperture is inserted in the camera axis, Allow the state of the closing motion of prevention exposure opening, the replacement aperture inserts the optical filtering of stipulating and takes the photograph The shadow optical axis, so in high scenes of subject brightness such as noons, can be with little aperture and at a high speed fast The door the mode high-speed photograph, in addition, in the low scene of the brightness such as night scene, can with large aperture and Photographing in the mode appropriate exposure ground of low speed shutter, and can take by optical filtering and to embody The night scene photo of special effect.

Claims (4)

1. camera with shutter device, it is the direction that has by trending towards closing the exposure opening, the blade of switch exposure opening and move opposing trend to throw blade away by corresponding shutter release operation, and the camera of the shutter device of the pressure release type that the shutter driver part of switch exposure opening constitutes, it is characterized in that this shutter device is provided with:

Open the state locking blade of exposure opening and stop with described blade and close the closing motion holdout device of action of exposure opening and the closing motion of throwing described blade away and removing the closing motion of the opening that allowed by the locking of the blade of closing motion holdout device to expose after through the time delay of regulation allows device by blade.

2. camera with shutter device, be to have the direction that the quilt of being thrown away by the shutter driver part that moves by corresponding shutter release operation is thrown parts away and trended towards closing the exposure opening, interlock comes the blade of switch exposure opening to constitute the camera of the shutter device of pressure release type with being thrown away the throwing action away of parts, it is characterized in that this shutter device is provided with:

The state of opening the exposure opening with described blade stops to be thrown away the closing motion holdout device of the action of parts and the exposure opening is closed in prevention by blade action and throwing described blade away and remove the closing motion permission device of being closed the action of exposure opening by the prevention of closing motion holdout device after the time delay of process regulation.

3. the camera with shutter device as claimed in claim 1 or 2 is characterized in that: described shutter device is provided with to be forbidden being stoped the closing motion of exposure opening, being carried out delay inhibiting apparatus by blade switch exposure opening forthwith by described closing motion holdout device.

4. the camera with shutter device as claimed in claim 3, it is characterized in that: described shutter device is provided with described delay inhibiting apparatus interlock, the state that stops at the closing motion of the opening of forbidding exposing, the aperture that will dwindle the aperture area of exposure opening inserts camera axis, at the state that the closing motion that allows the exposure opening stops, replace described aperture aperture/optical filtering that the optical filtering of regulation inserts camera axis is inserted device.

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