CN100557499C

CN100557499C - Camera

Info

Publication number: CN100557499C
Application number: CNB200510072897XA
Authority: CN
Inventors: 户松景
Original assignee: Canon Inc
Current assignee: Canon Inc
Priority date: 2004-06-11
Filing date: 2005-05-17
Publication date: 2009-11-04
Anticipated expiration: 2025-05-17
Also published as: CN1707345A; JP4464203B2; JP2005352229A

Abstract

A kind of constituent part of the present invention is few, assembling is easy, have economic mirror driving device camera.Camera has catoptron, the first afterburning parts and the second afterburning parts, moves on the primary importance that catoptron can be in light path and the second place outside the above-mentioned light path; The first afterburning parts produce the acting force that above-mentioned catoptron is driven to above-mentioned primary importance from said second position; The second afterburning parts produce the acting force that above-mentioned catoptron is driven to said second position from above-mentioned primary importance.Camera has holding member, first cam, second cam and motor, and holding member can carry out above-mentioned first maintenance of afterburning parts under charged state; The release portion that first cam has the charging part that the above-mentioned second afterburning parts are charged and discharges this second afterburning parts charging; Second cam is removed the above-mentioned maintenance of being undertaken by above-mentioned holding member; The above-mentioned first and second cam both sides of motor driven, said motor only drives above-mentioned first and second cams to a direction.

Description

Camera

Technical field

The present invention relates to drive the camera of the catoptron that relative light path of photography can advance and retreat.

Background technology

The mirror driving device that following simple eye reflex camera is arranged, promptly have motor, mirror drive cam shaft gear, mirror drive operating rod, shutter driving cam shaft gear and shutter and drive operating rod, the mirror drive cam shaft gear has camshaft wheel portion; The mirror drive operating rod carries out rotating drive by the cam part lifter of this mirror drive wheel gear to moving reflector; Shutter driving cam shaft gear has cam part; Shutter drives the lifter of operating rod by the cam part of shutter driving cam shaft gear to the shutter driving (for example, special fair 7-27156 communique) of charging.

And in this drive unit, the mirror drive cam shaft gear engages with the direct geared of shutter drive cam shaft, and the transmission gear of the rotating force of the one-directional rotation of transmission motor engages with the quad-camshaft gear in these cam shaft gears.

But, because mirror drive cam shaft gear, shutter driving cam shaft gear and the engaging ground of being connected with the transmission gear of quad-camshaft gear engaging in these cam shaft gears are provided with, therefore, if note the opposing party's cam shaft gear, compare with this side's cam shaft gear, owing to transmit the many one-levels of gear progression of motor driven power, it is not high therefore to drive efficient.

In addition, because the mirror drive cam shaft gear engages with the direct geared of shutter drive cam shaft, therefore, these cam shaft gears are mutually to counter-rotation.Therefore, can not make mirror drive operating rod or shutter drive being set to of rotation axis of operating rod with respect to the desirable setting that drives efficient.

And, mirror drive cam shaft gear and shutter drive cam shaft direct geared engaging, look at the rotating shaft direction of these camshafts, owing to occupy the space of calabash shape, therefore can not make mirror drive operating rod or shutter drive being set to of operating rod with respect to the desirable setting that drives efficient, unfavorable aspect driving efficient, also might cause the maximization of camera in addition.

In contrast, following drive unit (reference example such as spy open the 2002-23221 communique) is disclosed, the shutter transmission gear that engages with catoptron transmission gear and shutter driving cam shaft gear promptly is set, have the driving gearshaft by motor driven simultaneously, this catoptron transmission gear and shutter driving cam shaft gear engage with the mirror drive cam shaft gear on coaxial.According to above-mentioned formation, because motor driven power is directly transmitted from the transmission gear of distinguishing corresponding mirror drive cam shaft gear and shutter driving cam shaft gear, therefore, compare with following formation, be that transmission gear engages with a side cam shaft gear, the opposing party's cam shaft gear and the situation that this side's cam shaft gear engages can reduce because the driving efficient that the number of plies of gear produces is poor.In addition, rotate to same direction, can make mirror drive operating rod or shutter drive being set to of rotation axis of operating rod with respect to the desirable setting that drives efficient by making mirror drive cam shaft gear and shutter driving cam shaft gear.

But, in said structure, might cause the increase of number of spare parts, on assembly operation, mirror drive cam shaft gear and shutter driving cam shaft gear might produce phase shift in addition.And, because mirror drive cam shaft gear and shutter driving cam shaft gear are connected by transmission gear, produce because the phase shift that backkick backlash causes, FEEDBACK CONTROL is carried out in the rotation of cam shaft gear to either party, therefore, can not carry out the interlock driving that mirror drive and shutter drive accurately.

In addition, in the drive unit shown in above-mentioned, under the situation that catoptron is kept out of the way outside light path of photography in the light path of photography, perhaps under the situation about entering in the export-oriented light path of photography of light path of photography, owing to drive catoptron by cam lifters, therefore, owing to mirror drive times such as the variation generation of voltage is delayed.

In addition, open in the flat 1-134443 communique, disclose the mirror driving device of high-speed driving catoptron the spy.This mirror driving device is made of first holding section, first spring, second holding section, second spring, electromagnet and motor, and first holding section is positioned at catoptron in the light path of photography; First spring is to the direction reinforcing that catoptron is kept out of the way outside light path of photography; Second holding section is positioned at catoptron outside the light path of photography; Second spring is to the direction reinforcing that catoptron is entered in light path of photography; Electromagnet is removed the engaging on first and second holding sections; Motor charges to first and two springs.

But the high-speed driving that this mirror driving device can carry out catoptron needs a plurality of drive sources, and in addition, the number of spare parts of formation is also many, is very expensive device.And the releasing power of the electromagnet of the engaging in the engagement release portion is limited, can not increase the detent force that the holding section produces.

In addition, disclose the camera (opening the 2002-174850 communique) that motor of following usefulness satisfies drive source, promptly had acting force, the mirror driving device that catoptron can be advanced and retreat for light path by the driving spring after the charging with reference to the spy.

But, in said apparatus, when catoptron is driven in the export-oriented light path of photography of light path of photography, need to remove the engaging of ascent guidance bar, in case but, then drive and also carry out simultaneously, therefore towards the charging of the spring of light path of photography compelling force for the engagement release CD-ROM drive motor, load to motor strengthens, and has increased the engaging releasing time.

In addition, the rotation direction of motor is different when catoptron is entered in light path of photography when catoptron is kept out of the way outside light path of photography, for the rotation that makes motor stops, mechanism is locked, and forcibly stops cam shaft gear, and therefore, the machinery burden increases.

As mirror driving device, also have after mirror drive finishes, drive the charging operating rod by cam shaft gear, the holding section that is arranged on the maintenance operating rod on the charging operating rod is positioned at the device of the claw of catoptron operating rod.But, in said apparatus, when the holding section that keeps operating rod is positioned at the claw of catoptron operating rod, because the charging operating rod is by high-speed driving, therefore keep the top of operating rod and the claw high velocity impact of catoptron, therefore, might destroy the top of maintenance operating rod and the permanance of catoptron operating rod claw.

As the method that addresses these problems, open in the flat 1-134443 communique above-mentioned spy and to disclose following formation, that is, contact with the claw of catoptron operating rod always, avoid keeping the top of operating rod and the collision of catoptron operating rod claw by the top that will keep operating rod.

But, in said apparatus and since the top that keeps operating rod always with the claw sliding contact of catoptron operating rod, therefore, keep the top of operating rod need be higher than the length of the charging stroke of the operating rod that charges, cause the maximization of camera.

Summary of the invention

The purpose of this invention is to provide that component parts is few, assembling also easily, have a camera of low-cost mirror drive mechanism.

The camera of a side of the present invention has catoptron, the first afterburning parts, the second afterburning parts, holding member, first cam, second cam and motor, and the primary importance that this catoptron can be in being arranged on light path and the second place of keeping out of the way outside above-mentioned light path move; These first afterburning parts produce the acting force that above-mentioned catoptron is driven to above-mentioned primary importance from said second position; These second afterburning parts produce the acting force that above-mentioned catoptron is driven to said second position from above-mentioned primary importance; This holding member can carry out above-mentioned first maintenance of afterburning parts under charged state; The release portion that this first cam has the charging part that the above-mentioned second afterburning parts are charged and discharges this second afterburning parts charging; This second cam is removed the above-mentioned maintenance of being undertaken by above-mentioned holding member; The above-mentioned first and second cam both sides of this motor driven.Said motor only drives above-mentioned first and second camshafts to a direction.

The camera of another side of the present invention has catoptron, mirror drive parts, the first afterburning parts, shutter, shutter driver part, link, the second afterburning parts, first cam, second cam and motor, and this catoptron can move with respect to light path; These mirror drive parts can move on the primary importance and the second place, this primary importance be with this catoptron in being arranged on above-mentioned light path, this second place is that above-mentioned catoptron is kept out of the way outside the above-mentioned light path; These first afterburning parts produce the acting force that these mirror drive parts are driven to above-mentioned primary importance from said second position; This shutter driver part drives this shutter; This link is set on this shutter driver part, above-mentioned mirror drive parts is connected with this shutter driver part; These second afterburning parts produce the acting force that drives this shutter driver part, by this shutter driver part and above-mentioned link above-mentioned mirror drive parts are driven to said second position from above-mentioned primary importance; This first cam has charging part and release portion, and this charging part drives above-mentioned shutter driver part to direction that the above-mentioned second afterburning parts are charged, and this release portion allows the driving of being undertaken by the above-mentioned second afterburning parts of this shutter driver part; This second cam is removed the connection of the above-mentioned mirror drive parts that undertaken by above-mentioned link on said second position; The both sides of above-mentioned first and second camshafts of this motor driven.Said motor only drives above-mentioned first and second cams to a direction.

In addition, the camera of another side of the present invention has catoptron, the first afterburning parts, the second afterburning parts, engaging part, first cam and second cam, moves on the primary importance that this catoptron can be in being arranged on light path and the second place of keeping out of the way outside above-mentioned light path; These first afterburning parts produce the acting force that above-mentioned catoptron is driven to above-mentioned primary importance from said second position; These second afterburning parts produce the acting force that above-mentioned catoptron is driven to said second position from above-mentioned primary importance; This engaging part engages, stops the driving of this catoptron that is undertaken by the above-mentioned first afterburning parts with above-mentioned catoptron; This first cam has charging part and release portion, and this charging part is charged to the above-mentioned second afterburning parts; This release portion discharges the charging of these second afterburning parts; This second cam is removed the engaging of above-mentioned engaging part to above-mentioned catoptron, above-mentioned two cams be in above-mentioned catoptron and above-mentioned engaging part when the position that can carry out above-mentioned engaging relatively moves, above-mentioned engaging part is kept out of the way for above-mentioned reflective mirror.

In addition, the camera of another side of the present invention has catoptron, the first afterburning parts, shutter, shutter driver part, engaging part, the second afterburning parts, first cam and second cam, moves on the primary importance that this catoptron can be in being arranged on light path of photography and the second place of keeping out of the way outside above-mentioned light path of photography; These first afterburning parts produce the acting force that this catoptron is driven to above-mentioned primary importance from said second position; This shutter driver part drives this shutter; This engaging part is set on this shutter driver part, engages with above-mentioned catoptron; These second afterburning parts produce the acting force of this shutter driver part of driving and by this shutter driver part and above-mentioned engaging part above-mentioned catoptron are driven to said second position from above-mentioned primary importance; This first cam has charging part and release portion, and this charging part drives above-mentioned shutter driver part to direction that the above-mentioned second afterburning parts are charged, and this release portion allows the driving of being undertaken by the above-mentioned second afterburning parts of this shutter driver part; This second cam is removed the engaging of above-mentioned engaging part to the above-mentioned catoptron that moves to said second position, above-mentioned two cams above-mentioned shutter driver part by above-mentioned charging part when driving with upper/lower positions, the above-mentioned relatively catoptron of above-mentioned engaging part is kept out of the way, and this position is the position that above-mentioned engaging part can engage the above-mentioned catoptron that moves to above-mentioned primary importance.

The other objects and features of the invention can be understood by the desirable embodiment that describes with reference to following accompanying drawing.

Description of drawings

Fig. 1 is the stereographic map of the camera mirror case periphery in the expression embodiments of the invention 1.

Fig. 2 is the stereographic map of the camera mirror case periphery among the expression embodiment 1.

Fig. 3 is the exploded perspective view of expression mirror case periphery.

Fig. 4 is the mode chart for the phase-detection substrate of the rotation phase that detects the cam shaft gear among the embodiment 1.

Fig. 5 is the mirror drive cam of the cam shaft gear among the expression embodiment and the figure that keeps removing cam.

Fig. 6 is that the moving reflector among the embodiment is regulated the side view of parts on the charging end position time in view finder observation place, shutter.

Fig. 7 is that the moving reflector among the embodiment 1 is regulated the side view of parts when charging is removed on the position in camera positions, shutter.

Fig. 8 is that the moving reflector among the embodiment 1 is regulated the side view of parts when charging is removed on the position in view finder observation place, shutter.

Fig. 9 is that expression is seen cam shaft gear, the charging arm under Fig. 6 state and kept removing the figure of arm position from the mirror case top.

Figure 10 is that expression is seen cam shaft gear, the charging arm under Fig. 7 state and kept removing the figure of arm position from the mirror case top.

Figure 11 is that expression is seen cam shaft gear, the charging arm under Fig. 8 state and kept removing the figure of arm position from the mirror case top.

Figure 12 is the catoptron cam of the cam shaft gear in the camera of expression embodiments of the invention 2 and the figure that keep to remove cam.

Figure 13 is in embodiment 2, moving reflector view finder observation place, shutter regulate parts in the way of moving to the charging end position, keep operating rod at once with position that the catoptron operating rod engages on the time side view.

Figure 14 is that expression sees that from the mirror case top figure of arm position is removed in the cam shaft gear under Fig. 6 state, charging arm and maintenance among embodiment 2.

Figure 15 is that expression sees that from the mirror case top figure of arm position is removed in the cam shaft gear under Fig. 7 state, charging arm and maintenance among embodiment 2.

Figure 16 is that expression sees that from the mirror case top figure of arm position is removed in the cam shaft gear under Fig. 8 state, charging arm and maintenance among embodiment 2.

Figure 17 is that expression sees that from the mirror case top figure of arm position is removed in the cam shaft gear under Figure 13 state, charging arm and maintenance among embodiment 2.

Figure 18 is the skeleton diagram of

embodiment

1,2.

Embodiment

With reference to the accompanying drawings, the good embodiment of the present invention is described.

Embodiment 1

Figure 18 represents that the summary of the simple eye reflective digital camera (camera) of embodiments of the invention 1 (and embodiment described later 2) constitutes.In Figure 18, the 201st, camera body, 220 are mounted in the exchange camera lens on this camera body 201.By a plurality of eyeglasses 221 or do not have the photographic optical system that illustrated aperture constitutes and be maintained in the exchange camera lens 220.In addition, mouthful seat 222 is fixed on the rearward end of exchange camera lens 220.

Mirror case 1 is fixed on the camera body 201.The mouth seat 222 of exchange camera lens 220, illustrated trough of belt is counter bores the front portion that mouth seat 203 that coupling arrangement installs is fixed on this mirror case 1 by not having.In addition, moving reflector 2 can be installed in the mirror case 1 rotationally.This moving reflector 2 can rotate between with upper/lower positions, the position in promptly being set at from the subject of exchange camera lens 220 incidents to the light path (light path of photography) of light and keep out of the way the position of top from this light path.Under the state of moving reflector 2 in being set at light path of photography, will import on the finder optical system 204 on the top that is arranged on camera body 201 from the light beam of exchange camera lens 220, the cameraman can observe subject.In addition, keep out of the way by the position of keeping out of the way upward from light path, will be from the direction of the light beam that exchanges camera lens 220 facing to imaging apparatus 210 described later.

And focal-plane shutter assembly 205 is fixed on the rearward end of mirror case 1.Curtain 205a and back curtain 205b before this focal-plane shutter assembly 205 has, when photography, by the preceding curtain 205a that closes is moved to opening direction always, behind the official hour, the back curtain 205b that always opens is moved to closing direction, slit opening is moved abreast to the sensitive surface that remains on the imaging apparatus 210 on camera 201 bodies, carry out the exposure of imaging apparatus 210.

In addition, imaging apparatus 210 is made of the components of photo-electric conversion of ccd sensor or cmos sensor etc.The image of photographing by imaging apparatus 210 is recorded on the recording mediums such as semiconductor memory.

In addition, at the back side of camera body 201, the display 215 of image that expression photographs by imaging apparatus 210 etc. is installed.

Below, the formation and the action that just drive the mirror driving device of moving reflector 2 and shutter assembly 205 describe.

Fig. 1 and Fig. 2 are the stereographic maps that mirror case on the camera of expression present embodiment and periphery thereof constitute, and Fig. 3 is the exploded perspective view that expression mirror case and periphery thereof constitute.

In these figure, the 1st, mirror case, the 2nd, moving reflector, the 3rd, moving reflector driving spring, the 4th, mirror drive operating rod, the 5th, mirror drive operating rod back-moving spring, the 6th, the charging operating rod, the 7th, keep operating rod, the 8th, keep the operating rod back-moving spring, the 9th, the charging arm, the 10th, keep removing arm, the 11st, keep removing arm back-moving spring, the 12nd, cam shaft gear, the 13rd, phase-detection contact pin, the 14th, the phase-detection substrate, 15 is first moving reflector back-moving springs, 16 is second moving reflector back-moving springs, the 17th, motor, the 18th, the reduction planetary device, the 19th, the flash lamp component driven wheel, the 20th, shutter is regulated parts, the 22nd, the fixed part that the moving reflector driving spring is installed, the 23rd, keep joystick shaft.

Below describe with regard to the setting and the assemble method of above-mentioned each part.

Moving reflector 2 is housed in the inside of mirror case 1 rotationally by direction up and down.2a is integrally formed in the mirror drive pin of giving prominence to laterally on the moving reflector 2, from the inboard, side of mirror case 1.2b is integrally formed in the catoptron return pin of giving prominence to laterally on the moving reflector 2, from the inboard, side of mirror case 1.1a is formed in the peristome of the side of mirror case 1, at the direction of principal axis of axial region 1b, has than mirror drive pin 2a and the bigger aperture area of catoptron return pin 2b.1b is the axial region that charging operating rod 6 can be kept rotationally.1c and 1d are the installation portions that the first moving reflector back-moving spring 15 and the second moving reflector back-moving spring 16 are installed.

In addition, 1p is the catoptron rising location division that contacts, positions with the mirror drive operating rod 4 that catoptron is risen, and 1q is the catoptron decline location division that contacts, positions with the mirror drive operating rod 4 that catoptron is descended.These axial regions 1b, installation portion 1c, 1d and location division 1p, 1q are outstanding from the outer lateral side of mirror case, by mirror case is integrally formed relatively.

6a is arranged on the axial region on the charging operating rod 6, when mirror drive operating rod 4 can be kept rotationally, is mounted the coil portion of mirror drive operating rod back-moving spring 5.5a is the stiff end of mirror drive operating rod back-moving spring 5, is hung on the pillar 1e that is arranged on the mirror case 1.In addition, 5b is the movable end of mirror drive operating rod back-moving spring 5, is hung on the 4a of spring-loaded portion that is arranged on the mirror drive operating rod 4.Like this, mirror drive operating rod 4 is subjected to the elastic force from mirror drive operating rod back-moving spring 5, by afterburning to counterclockwise.

The coil portion of the first moving reflector back-moving spring 15 is installed on the installation portion 1c of mirror case 1.15a and 15b are the stiff end and the movable end of the first moving reflector back-moving spring 15, are hung in the pillar 1f that is arranged on the mirror case 1 and go up and be set on the catoptron return pin 2b on the moving reflector 2.Like this, moving reflector 2 is subjected to the elastic force from the first moving reflector back-moving spring 15, is driven to the view finder observation place.

After the fitting operation of mirror drive operating rod 4 and 6 pairs of mirror cases of charging operating rod finishes, fixed part 22 is installed in the end face of axial region 1b.On this fixed part 22, be assembled with moving reflector driving spring 3.

3a is the stiff end of moving reflector driving spring 3, is hung on the pillar 1g that is arranged on the mirror case 1.3b is the movable end of moving reflector driving spring 3, is hung on the 6b of spring-loaded portion that is arranged on the charging operating rod 6.Like this, charging operating rod 6 is subjected to the elastic force from moving reflector driving spring 3, and quilt is to clockwise direction (top) reinforcing.

Moving reflector 2 can be relatively be advanced and retreat to the light path of photography of imaging apparatus from the exchange camera lens, and the exchange camera lens is installed on mouthful seat (Figure 18 203), and mouthful seat is installed in the front of mirror case 1, and imaging apparatus is set at the rear of mirror case 1.

Promptly, moving reflector 2 tiltedly is located in the light path of photography, can between view finder observation place and camera positions, move, the view finder observation place be with subject light to the finder optical system that is arranged on mirror case 1 top (Figure 18 204) reflection, camera positions are to keep out of the way outside light path of photography, make subject light facing to imaging apparatus (Figure 18 210).

The drive pin contact site 4b that is set up on the mirror drive operating rod 4 contacts with mirror drive pin 2a on being set at moving reflector 2.4c is and the first mirror drive operating rod holding section that keeps operating rod holding section 7a to engage that keeps operating rod 7.4d is the impact portions that collides the contact site 1q that is arranged on the mirror case 1.

The shutter charging part 6c that is arranged on the concave shape on the charging operating rod 6 clamps drive pin 20a and supports, and drive pin 20a is wholely set at shutter described later and regulates on the parts 20.6d is the charging operating rod holding section that engages with the charging arm holding section 9a of charging arm 9 described later.

Keep operating rod 7 to be assembled with the state that keeps operating rod back-moving spring 8, keep operating rod installation portion 6e by keeping joystick shaft 23, quilt to be supported on rotationally, this maintenance operating rod installation portion 6e is set on the charging operating rod 6.8a is the stiff end that keeps the operating rod back-moving spring, is hung on the 6f of spring-loaded portion that is arranged on the charging operating rod 6.8b is the movable end that keeps the operating rod back-moving spring, is hung in to be arranged on the 7b of spring-loaded portion that keeps on the operating rod 7.Like this, keep operating rod 7 to be subjected to the elastic force of self-sustaining operating rod back-moving spring 8, quilt is to the clockwise direction reinforcing.7c be be arranged on that maintenance described later removes that maintenance on the arm 10 removes that arm holding section 10a engages second keep the operating rod holding section.

Charging arm 9 can be supported on the axial region 1h that is arranged on the mirror case 1 rotationally.9b removes the axial region that arm 10 can keep rotationally with maintenance described later, is assembled with the coil portion that keeps removing arm back-moving spring 11 on this axial region 9b.11a is the stiff end that keeps removing arm back-moving spring 11, is hung on the pillar 1i that is arranged on the mirror case 1.11b is the movable end that keeps removing arm back-moving spring 11, is hung in to be arranged on the 10b of spring-loaded portion that keeps removing on the arm 10.Like this, keep removing arm 10 and remove the elastic force of arm back-moving spring 11, from the top of mirror case 1, by afterburning to counterclockwise by being subjected to self-sustaining.

9c is arranged on the cam pin of charging on the arm 9, contacts with charging cam 12a (first cam) on being arranged on cam shaft gear 12.10c is arranged on the cam pin of keep removing on the arm, removes cam 12b (second cam) and contacts with the maintenance on being arranged on cam shaft gear 12.

Cam shaft gear 12 can be remained on the axial region 1j that is arranged on the mirror case 1 rotationally.Therefore, charging cam 12a and maintenance releasing cam 12b are that rotate at the center with axial region 1j.The gear part 12c that is arranged on the cam shaft gear 12 engages with the power transmission gear 18a of reduction planetary device 18 described later, sees from the top of mirror case 1 to counterclockwise rotating.

The rotational action of cam shaft gear 12 Once you begin, cam pin 9c then moves along the profile that is arranged on the charging cam 12a on the cam shaft gear 12, and is corresponding therewith, charging arm 9 begins to carry out the reciprocal rotational motion round axial region 1h.

Equally, cam pin 10c then moves along the profile that is arranged on the charging cam 12b on the cam shaft gear 12, and is corresponding therewith, keeps removing arm 10 and begins to carry out reciprocal rotational motion round axial region 9b.

In addition, phase-detection contact pin 13 is keeping the phase relation of regulation to be fixed on the cam shaft gear 12, contacts with the pattern of phase-detection substrate 14 described later.

Phase-detection substrate 14 is keeping the phase relation of regulation to be fixed on no illustrated gear pressing on the cover, and this gear is pressed and covered parts such as pushing down the gear that is installed on the mirror case 1 or arm, prevents to come off from mirror case 1.

Reduction planetary device 18 can be installed in the axial region 1n that is arranged on the mirror case 1 rotationally, the driving force of motor 17 is slowed down, when transmitting, the rotation direction of corresponding motor 17 switches to the transmission of driving force on cam shaft gear 12 or the flash lamp component driven wheel 19 described later.18c is a power transmission gear, when motor 17 is driven by the opposite direction to mirror drive the time, this driving force is sent on the flash lamp component driven wheel 19 described later.

Flash lamp component driven wheel 19 can be inserted the 1o of hole portion that is arranged on the mirror case 1 rotationally.Flash lamp component driven wheel 19 transmits power, and this power is the driving for the switch drive of not having illustrated flash lamp component or zoom lens.Also can transmit driving force in addition to the device beyond the flash lamp component.

Shutter is regulated the rear end flange part that parts 20 can be assembled in mirror case 1 rotationally, by rotating, the preceding curtain assembly of no illustrated focal-plane shutter and back curtain assembly is moved downwards to the charging direction.In addition, the charging disarm state that can charge and discharge with back curtain assembly from this charging done state to preceding curtain assembly, by rotating upward, preceding curtain and back curtain be not by there being the state of illustrated electromagnet from the maintenance charged state, thereby the output of above-mentioned electromagnet is not controlled the aperture time that obtains stipulating by there being illustrated control loop, charging by preceding curtain and back curtain driving spring discharges, and curtain and back curtain moves before finishing.

Below, utilize Fig. 4～Figure 11, describe with regard to the action and the control method of mirror driving device.At this, Fig. 4 is the mode chart of phase-detection substrate 14 that detects the rotation phase of cam shaft gear 12.Fig. 5 is the charging cam 12a of expression cam shaft gear 12 and the phase diagram that keeps removing cam 12b.To be moving reflector 2 regulate parts 20 on the charging end position time at view finder observation place, shutter to Fig. 6, and holding state figure promptly photographs.Fig. 7 is a moving reflector 2 in camera positions, shutter is regulated parts 20 when charging is removed on the position, i.e. catoptron propradation figure.Fig. 8 is a moving reflector 2 in the view finder observation place, shutter regulate parts 20 when charging is removed on the position, catoptron decline constitutional diagram.

Fig. 9 is that cam shaft gear 12, charging arm 9 under Fig. 6 state and the constitutional diagram that keeps releasing arm 10 are seen in expression from mirror case 1 top.Figure 10 is that cam shaft gear 12, charging arm 9 under Fig. 7 state and the constitutional diagram that keeps releasing arm 10 are seen in expression from mirror case 1 top.Figure 11 is that cam shaft gear 12, charging arm 9 under Fig. 8 state and the constitutional diagram that keeps releasing arm 10 are seen in expression from mirror case 1 top.

At first, utilize the mode chart of the phase-detection substrate 14 of Fig. 4, describe with regard to the drive controlling method of cam shaft gear 12.When prescribed direction (for example clockwise rotating) rotation motor 17, this driving force is sent to the gear part 12c of cam shaft gear 12 by reduction planetary device 18, makes cam shaft gear 12 towards a direction that should prescribed direction is rotated.At this moment, the counter clockwise direction of phase-detection contact pin 13 on the pattern of phase-detection substrate 14, in Fig. 4 that is fixed on the cam shaft gear 12 moves.

On phase-detection substrate 14, be formed with the pattern 1 of respective signal 1, the pattern 2 of respective signal 2 and three conductive pattern patterns of GND, phase-detection contact pin 13 is that pattern 2 is connected with the GND pattern, pattern 1 is in the scope that becomes non-contacting θ 1 time, become state shown in Figure 6, be the view finder observation place of movable catoptron 2 in being set at light path of photography, shutter is regulated parts 20 and is adjusted in the charging end position.

In addition, phase-detection contact pin 13 is that pattern 1 is connected with the GND pattern, pattern 2 is in the scope that becomes non-contacting θ 2 time, moving reflector 2 is by the camera positions outside light path of photography drive from the view finder observation place, and shutter is regulated parts 20 and is removed the position driving from the charging end position towards charging.Like this, become state shown in Figure 7, promptly movable catoptron 2 and shutter are regulated parts 20 and are adjusted in respectively on camera positions and the charging releasing position.

And, phase-detection contact pin 13 be pattern 1 and pattern 2 all when becoming in the scope of noncontact θ 3 with the GND pattern, moving reflector 2 is driven from camera positions towards the view finder observation place.Like this, become state shown in Figure 8, promptly movable catoptron 2 is adjusted on the view finder observation place, shutter is regulated parts 20 and is left on the charging releasing position.And cam shaft gear 12 is proceeded rotational action, mirror driving device from recovering state shown in Figure 8 to state shown in Figure 6.

In addition, output signal from phase-detection substrate 14 is transfused to no illustrated control loop, control loop makes motor 17 carry out following action according to the breakdown action of no illustrated cancel switch, promptly, cam shaft gear 12 from the turned position of corresponding θ 1 scope to the rotated position of corresponding θ 2 scopes, when cam shaft gear 12 moves on the position of corresponding θ 2 scopes, motor 17 is stopped operating.

Then, the no illustrated electromagnet of control loop control, make no illustrated before curtain and back act mobile, the aperture time that obtains stipulating.After the exposure program of shutter finishes, make motor 17 carry out following action, prepare photography next time, that is, cam shaft gear 12 rotates to the turned position of corresponding θ 3 scopes from the turned position of corresponding θ 2 scopes.

Below, utilize the cam lifters of the cam shaft gear 12 of Fig. 5 that figure is set, describe with regard to the charging cam 12a of cam shaft gear 12 and the phase relation that keeps removing cam 12b.

In the figure, higher level's cam is charging cam 12a, and the cam of subordinate is to keep removing cam 12b.Cam shaft gear 12 is subjected to the driving force of motor 17, rotates to a direction (counterclockwise).

When phase-detection contact pin 13 was positioned at the scope of the θ 1 on the pattern of phase-detection substrate 14, the cam pin 10c that arm 10 is removed in the contact position of the cam pin 9c of charging arm 9 and charging cam 12a and keeping and the contact position that keeps removing cam 12b were positioned at the scope of θ 4.

The cam pin 9c of charging arm 9 contacts with the lifter end face 12a1 of charging cam 12a, keep the cam pin 10c that removes arm 10 to contact with keeping the lifter bottom surface 12b2 that removes cam 12b, charging arm 9 becomes state shown in Figure 9 with keeping releasing arm 10, and mirror driving device becomes state shown in Figure 6.

When phase-detection contact pin 13 was positioned at the scope of the θ 2 on the pattern of phase-detection substrate 14, the cam pin 10c that arm 10 is removed in the contact position of the cam pin 9c of charging arm 9 and charging cam 12a and keeping and the contact position that keeps removing cam 12b were positioned at the scope of θ 5.

The cam pin 9c of charging arm 9 contacts with the lifter bottom surface 12a2 of charging cam 12a, keep the cam pin 10c that removes arm 10 to contact with keeping the lifter bottom surface 12b2 that removes cam 12b, charging arm 9 becomes state shown in Figure 10 with keeping releasing arm 10, and mirror driving device becomes state shown in Figure 7.

When phase-detection contact pin 13 was positioned at the scope of the θ 3 on the pattern of phase-detection substrate 14, the cam pin 10c that arm 10 is removed in the contact position of the cam pin 9c of charging arm 9 and charging cam 12a and keeping and the contact position that keeps removing cam 12b were positioned at the scope of θ 6.

In addition, even the lifter bottom surface 12b2 that keeps the cam pin 10c of releasing arm 10 to remove cam 12b from the maintenance of cam shaft gear 12 contacts one side up to one side and moves with lifter end face 12b1, cam shaft gear 12 rotates, the cam pin 9c of charging arm 9 also be intactly with the lifter bottom surface 12a2 state of contact of charging cam 12a, charging arm 9 becomes the state of Figure 11 with keeping releasing arm 10, and mirror driving device becomes the state of Fig. 8.

If cam shaft gear 12 further turns to the scope of θ 1, the arm 9 that then charges returns to the state of Fig. 9 with keeping releasing arm 10, and mirror driving device returns to the state of Fig. 6, prepares photography next time.

Below, the action from Fig. 6 and state shown in Figure 9 drive unit when Fig. 7 and the state transitions shown in Figure 10 describes with regard to drive unit.

In state shown in Figure 6, because the charging arm holding section 9a by charging arm 9 drives charging operating rod 6 quilts of shutter part 20 to counterclockwise driving, therefore, by the 6b of spring-loaded portion of charging operating rod 6, the movable end 3b of moving reflector driving spring 3 is pressed into the right side.Like this, moving reflector driving spring 3 is recharged, charging operating rod 6 can be rotated to clockwise direction, shutter part 20 can be adjusted to the charging end position.At this moment, the first moving reflector back-moving spring 15 also is not recharged.

In Fig. 9, from this state, if cam shaft gear 12 is to counterclockwise rotating, then the lifter end face 12a1 of the charging cam 12a that contacts with the cam pin 9c of charging arm 9 interrupts, by the acting force of the moving reflector driving spring 3 after the charging, charging operating rod 6 is driven to clockwise direction in Fig. 6.At this moment, because the charging operating rod holding section 6d of charging operating rod 6 engages with the charging arm holding section 9a of charging arm 9, therefore, as shown in figure 10, charging arm 9 is center of rotation, rotates to counter clockwise direction with the axial region 1h of mirror case 1, and the cam pin 9c of charging arm 9 contacts with the lifter bottom surface 12a2 of charging cam 12a.

By the charging operating rod 6 by from state shown in Figure 6 to state-driven shown in Figure 7, the drive pin 20a that the shutter charging part 6c of charging operating rod 6 makes nipped shutter regulate parts 20 rotates upward, makes shutter regulate parts 20 and removes the position rotation from the charging end position of Fig. 6 to the charging of Fig. 7.

In addition, with make shutter regulate parts 20 to remove the position when rotating to charging from the charging end position, be formed on keep first on the operating rod 7 keep operating rod holding section 7a by be arranged on mirror drive operating rod 4 on mirror drive operating rod holding section 4c engage, mirror drive operating rod 4 is connected on the charging operating rod 6, the spring force of opposing mirror drive operating rod back-moving spring 5 is driven to clockwise direction with charging operating rod 6.

Rotate to clockwise direction by mirror drive operating rod 4, the drive pin contact site 4b of mirror drive operating rod 4 contacts with the mirror drive pin 2a of moving reflector 2.Like this, mirror drive operating rod 4 by mirror drive pin 2a, moving reflector 2 is rotated from the view finder observation place to camera positions shown in Figure 7.And the impact portions 6g of charging operating rod 6 is when contacting with the catoptron location division 1p of mirror case 1, and as shown in Figure 7, moving reflector 2 is regulated parts 20 to camera positions, shutter and moved to charging releasing position.

Under state shown in Figure 6, because the catoptron return pin 2b of moving reflector 2 and the movable end 15b of the first moving reflector back-moving spring 15 contact, therefore, move (going up moving) by moving reflector 2 to camera positions, the first moving reflector back-moving spring 15 is recharged.At this, under state shown in Figure 7, owing to keep first of operating rod 7 to keep the mirror drive operating rod holding section 4c engaging of operating rod holding section 7a to mirror drive operating rod 4, therefore, can prevent mirror drive operating rod 4 because the acting force of mirror drive operating rod back-moving spring 5 rotates to counter clockwise direction.Its result can keep the first moving reflector back-moving spring 15 with the state after the charging.

Below, just the action from Fig. 7 and state shown in Figure 10 mirror driving device when Fig. 8 and the state transitions shown in Figure 11 describes.

If cam shaft gear 12, is then removed maintenance that the lifter bottom surface 12b2 of cam 12b contact with the maintenance of cam shaft gear 12 and is removed the cam pivot pin 10c of arm 10 and jump to and contact on the lifter end face 12b1 that keeps releasing cam 12b to counterclockwise rotating from state shown in Figure 10 in Fig. 7.By keeping the cam pivot pin 10c that removes arm 10 to move to lifter end face 12b1 from keeping the lifter bottom surface 12b2 that removes cam 12b, keeping releasing arm 10 is center of rotation with the axial region 1h of mirror case 1, rotate to clockwise direction, the acting force that opposing keeps removing arm back-moving spring 11 moves to state shown in Figure 11.

By keeping releasing arm 10 to rotate to clockwise direction, arm holding section 10a is removed in the maintenance of maintenance releasing arm 10 makes second of maintenance operating rod 7 keep operating rod holding section 7c mobile in Figure 11 downwards.

By keeping second of operating rod 7 to keep operating rod holding section 7c in Figure 11, to move downwards, keep operating rod 7 opposings to keep the acting force of operating rod back-moving springs 8, with the maintenance operating rod installation portion 6e of charging operating rod 6 be rotation axis, to counterclockwise rotating.If cam shaft gear 12 turns to state shown in Figure 11, then keep operating rod 7 to turn to state shown in Figure 8.

If keep operating rod 7 to turn to state shown in Figure 8 like this, then keep the engaging of 7 pairs of mirror drive operating rods 4 of operating rod to interrupt, therefore, mirror drive operating rod 4 is by the acting force of mirror drive operating rod back-moving spring 5, axial region 1b with mirror case 1 is the center, to counterclockwise rotating.The mirror drive operating rod 4 that begins this rotational action turns to the state that collides Fig. 8 that the catoptron decline location division 1q of mirror case 1 stops by impact portions 4d.

In addition, if mirror drive operating rod 4 is to counterclockwise rotating, then the mirror drive pin contacts 4b of portion that contacts with mirror drive pin 2a is from this disengaging, therefore, by the first moving reflector back-moving spring 15 and the second moving reflector back-moving spring 16 after the charging, moving reflector 2 rotates to clockwise direction, observes to the view finder position of Fig. 8 from the camera positions of Fig. 7 and moves.

Below, just the action from Fig. 8 and state shown in Figure 11 mirror driving device when Fig. 6 and the state transitions shown in Figure 9 describes.

If cam shaft gear 12 rotates to counter clockwise direction from state shown in Figure 11, then the lifter end face 12b1 interruption of cam 12b is removed in the maintenance of cam shaft gear 12, remove 11 reinforcings of arm back-moving spring owing to be held, therefore, keep the cam pivot pin 10c of releasing arm 10 to contact with keeping the lifter bottom surface 12b2 that removes cam 12b.If keep the cam pivot pin 10c that removes arm 10 to contact, then keep removing arm 10 and move to the position of Fig. 9 with keeping the lifter bottom surface 12b2 that removes cam 12b.

In addition, if cam shaft gear 12 from state shown in Figure 11 to counterclockwise rotating, then the cam pin 9c of the charging arm 9 that contact with the lifter bottom surface 12a2 of the charging cam 12a of cam shaft gear 12 contacts with the lifter end face 12a1 of the cam 12a that charges.If the cam pin 9c of charging arm 9 enters the lifter end face 12a1 of charging cam 12a, the arm 9 that then charges rotates to the position of Fig. 9 and moves.

If charging arm 9 is to counterclockwise rotating, the charging arm holding section 9a of the arm 9 that then charges engages with the charging operating rod holding section 6d of charging operating rod 6, makes charging operating rod 6 to counterclockwise rotating.To counterclockwise rotating, the moving reflector driving spring 3 that movable end 3b and stiff end 3a are hung on the pillar 1g of the 6b of spring-loaded portion of charging operating rod 6 and mirror case 1 is carried out charging by charging operating rod 6.

Simultaneously, because the drive pin 20a that the shutter charging part 6c of charging operating rod 6 regulates parts 20 with shutter forces down, therefore, shutter is regulated parts 20 and is rotated to charging done state shown in Figure 6.The cam pin 9c of charging arm 9 is when contacting with the lifter end face 12a1 of the charging cam 12a of cam shaft gear 12, shutter is regulated parts 20 and is arrived the charging end positions, do not have illustrated electromagnet utilize its absorption affinity will not have illustrated before curtain and a back act assembly remain on the charging done state.

In addition, keep first of operating rod 7 to keep the 4c sliding contact of mirror drive operating rod holding section, first moment that keeps operating rod holding section 7a to stretch out of operating rod holding section 7a and mirror drive operating rod 4 to the right side of mirror drive operating rod holding section 4c, by keeping the acting force of operating rod back-moving spring 8, keep operating rod 7 to rotate to clockwise direction.Like this, first keeps operating rod holding section 7a to be depressed, and as shown in Figure 6, keeps first of operating rod 7 to keep operating rod holding section 7a to moving with the position that the mirror drive operating rod holding section 4c of mirror drive operating rod 4 engages.

Like this, by from the state of Fig. 6 to the state transitions of Fig. 7, further to the state transitions of Fig. 8, return the state of Fig. 6, in other words, rotate weeks, photography release once by making cam shaft gear 12.

In addition,, therefore, the drive controlling simplicity of motor 17 can be made, mirror driving device can be realized with respect to scatteredload owing to, can drive moving reflector 2 and shutter part 20 by cam shaft gear 12 is rotated to a direction.

Because with respect to scatteredload, therefore can provide and promptly use same driving force to carry out mirror drive and shutter drives, power consumption is also few mirror driving device.

In addition, when removing cam 12b by constitute charging cam 12a and maintenance with parts, its coaxial rotation ground is driven to a direction, can drive catoptron and blade drive device, therefore, driving efficient height can prevent in addition because the phase shift of two cams that the assembling error causes.Its result can provide little power consumption and high-precision mirror driving device.

Like this, according to present embodiment,, catoptron is moved to first and second positions because motor drives first and second cams to a direction.Therefore, the driving force of the motor that can rotate to other direction distribute to other drive unit driving (for example, flash lamp component drives, the insertion of recording medium/discharge drives, and under the situation of film camera, film transport drives or the insertion/discharge of film drives).Its result in order to carry out the driving of other drive units, there is no need to use other motor, therefore, can provide the mirror driving device that constituent part is few, assembling is easy, economic.

Embodiment 2

Below, describe with regard to the formation of the simple eye reflective digital camera of embodiments of the invention 2.Its basic formation of the camera of present embodiment and action with in embodiment 1, utilize illustrated identical of Fig. 1～Fig. 4 and Fig. 6～Fig. 8.Therefore, at this, its identical formation describes or omits explanation with same accompanying drawing.In the present embodiment, cam shaft gear 12 shown in Figure 12 ' cam shaft gear 12 different of shape and embodiment 1.In Fig. 4 and Fig. 6～Fig. 8, with cam shaft gear 12 replace to cam shaft gear 12 '.

Utilize Fig. 4, Fig. 6～Fig. 8 and Figure 12～Figure 17, describe with regard to the action and the control method of catoptron and blade drive device.Fig. 4 be detect cam shaft gear 12 ' the mode chart of phase-detection substrate 14 of turned position.Fig. 6 be moving reflector in the view finder observation place, shutter regulate parts 20 when the charging end position, the holding state figure that photographs just.

Fig. 7 be moving reflector 2 in camera positions, shutter regulates parts 20 when the position is removed in charging, i.e. the figure of catoptron propradation.Fig. 8 be moving reflector 2 in the view finder observation place, shutter regulates parts 20 when the position is removed in charging, i.e. the figure of catoptron decline state.

Figure 13 be expression moving reflector 2 in the view finder observation place, shutter regulates parts 20 in charging state midway, the constitutional diagram that keeps operating rod 7 soon to engage with the mirror drive operating rod.

Figure 14 be expression see from the top of mirror case 1 cam shaft gear 12 under state shown in Figure 6 ', charging arm 9 and keep removing the constitutional diagram of arm 10.Figure 15 be expression see from the top of mirror case 1 cam shaft gear 12 under state shown in Figure 7 ', charging arm 9 and keep removing the constitutional diagram of arm 10.Figure 16 be the cam shaft gear 12 of expression when state shown in Fig. 8 is seen in the top of mirror case 1 ', charging arm 9 and keep removing the constitutional diagram of arm 10.Figure 17 be expression see from the top of mirror case 1 cam shaft gear 12 state shown in Figure 13 under ', charging arm 9 and the constitutional diagram that keeps releasing arm 10.Figure 12 be expression cam shaft gear 12 ' charging cam 12a ' and keep to remove the phase diagram of cam 12b '.

At first, utilize the mode chart of the phase-detection substrate 14 of Fig. 4, with regard to cam shaft gear 12 ' the drive controlling method describe.When prescribed direction (for example clockwise rotating) rotation motor 17, this driving force by reduction planetary device 18 be sent to cam shaft gear 12 ' gear part 12c ', make cam shaft gear 12 ' to a direction that should prescribed direction is rotated.At this moment, be fixed on cam shaft gear 12 ' on the counter clockwise direction of phase-detection contact pin 13 on the pattern of phase-detection substrate 14, in Fig. 4 move.

On phase-detection substrate 14, be formed with the pattern 1 of respective signal 1, the pattern 2 of respective signal 2 and three conductive pattern patterns of GND, phase-detection contact pin 13 is that pattern 2 is connected with the GND pattern, pattern 1 is in the scope of non-contacting θ 1 time, become state shown in Figure 6, be the view finder observation place of movable catoptron 2 in being set at light path of photography, shutter is regulated parts 20 and is adjusted in the charging end position.

And, phase-detection contact pin 13 be pattern 1 and pattern 2 all when becoming in the scope of noncontact θ 3 with the GND pattern, moving reflector 2 is driven from camera positions towards the view finder observation place.Like this, become state shown in Figure 8, promptly movable catoptron 2 is adjusted on the view finder observation place, shutter is regulated parts 20 and is left on the charging releasing position.

And, cam shaft gear 12 is proceeded rotational action, and catoptron and blade drive device become state shown in Figure 13 from state shown in Figure 8, promptly, shutter is regulated parts 20 to the charging of charging end position midway, keep operating rod 7 soon to engage with mirror drive operating rod 4.And to state shown in Figure 6, that is, shutter is regulated parts 20 and is moved to the charging end position, the photography holding state that keeps operating rod 7 to engage with mirror drive operating rod 4 from this recovering state.

In addition, output signal from phase-detection substrate 14 is transfused to no illustrated control loop, control loop is according to opening no illustrated cancel switch, making motor 17 carry out following action, promptly, cam shaft gear 12 ' from the turned position of corresponding θ 1 scope is to the rotated position of corresponding θ 2 scopes, when cam shaft gear 12 ' on the position of corresponding θ 2 scopes moves, motor 17 is stopped operating.

Then, control loop is controlled no illustrated electromagnet, is made no illustrated preceding act (205a of Figure 18) and back act (205a of Figure 18) mobile, the aperture time that obtains stipulating.After the exposure program of shutter finishes, motor 17 is carried out following driving, prepares photography next time, that is, cam shaft gear 12 ' from the turned position of corresponding θ 2 scopes is to the turned position of corresponding θ 3 scopes, further rotate to the turned position of corresponding θ 1 scope.

Below, utilize the cam shaft gear 12 of Figure 12 ' cam lifters figure is set, with regard to cam shaft gear 12 ' charging cam 12a ' and the phase relation that keeps removing cam 12b ' describe.

In the figure, higher level's cam is charging cam 12a ', and the cam of subordinate is to keep removing cam 12b '.Cam shaft gear 12 ' be subjected to the driving force of motor 17 rotates to a direction (counterclockwise).

When phase-detection contact pin 13 was positioned at the scope of the θ 1 on the pattern of phase-detection substrate 14, the cam pin 10c that arm 10 is removed in the contact position of the cam pin 9c of charging arm 9 and charging cam 12a ' and keeping and the contact position that keeps removing cam 12b were positioned at the scope of θ 4.

The cam pin 9c of charging arm 9 contacts with the lifter end face 12a1 ' of charging cam 12a ', keep the cam pin 10c that removes arm 10 to contact with keeping the lifter bottom surface 12b2 ' that removes cam 12b ', charging arm 9 becomes state shown in Figure 14 with keeping releasing arm 10, and catoptron and blade drive device become state shown in Figure 6.

When phase-detection contact pin 13 was positioned at the turned position of θ 2 scopes on the pattern of phase-detection substrate 14, the cam pin 10c that arm 10 is removed in the contact position of the cam pin 9c of charging arm 9 and charging cam 12a ' and keeping and the contact position that keeps removing cam 12b ' were positioned at the scope of θ 5.

The cam pin 9c of charging arm 9 contacts with the lifter bottom surface 12b2 ' of charging cam 12a ', keep the cam pin 10c that removes arm 10 to contact with keeping the lifter bottom surface 12b2 ' that removes cam 12b ', charging arm 9 becomes state shown in Figure 15 with keeping releasing arm 10, and catoptron and blade drive device become state shown in Figure 7.

When phase-detection contact pin 13 was positioned at the scope of the θ 3 on the pattern of phase-detection substrate 14, the cam pin 10c that arm 10 is removed in the contact position of the cam pin 9c of charging arm 9 and charging cam 12a ' and keeping and the contact position that keeps removing cam 12b ' were positioned at the scope of θ 6.

In addition, even the cam pin 10c that keep to remove arm 10 from cam shaft gear 12 ' the maintenance lifter bottom surface 12b2 ' that removes cam 12b ' contact simultaneously mobile with lifter end face 12b1 ' up to one side, cam shaft gear 12 ' rotate, the cam pin 9c of charging arm 9 also be intactly with lifter bottom surface 12a2 ' state of contact of charging cam 12a ', charging arm 9 becomes the state of Figure 16 with keeping releasing arm 10, and catoptron and blade drive device become the state of Fig. 8.

If cam shaft gear 12 ' further rotate, the cam pin 9c that then becomes charging arm 9 contacts with the lifting machine side 12a3 ' of charging cam 12a ', keep removing the cam pin 10c and the charging lifting machine side 12b3 ' state of contact that keeps removing cam 12b ' of arm 10, the state that arm 10 becomes Figure 17 is removed in charging arm 9 and maintenance, and catoptron and blade drive device become the state of Figure 13.

If cam shaft gear 12 ' further turn to the scope of θ 1, the arm 9 that then charges returns to the state of Figure 14 with keeping releasing arm 10, and catoptron and blade drive device return to the state of Fig. 6, prepare photography next time.

Below, describe from the action when Fig. 7 and the state transitions shown in Figure 15 of Fig. 6 and state shown in Figure 14 with regard to catoptron and blade drive device.

In Figure 14, from this state, if cam shaft gear 12 ' to counterclockwise rotating, the then lifter end face 12a1 ' interruption of the charging cam 12a ' that contacts with the cam pin 9c of charging arm 9, by the acting force of the moving reflector driving spring 3 after the charging, charging operating rod 6 is driven to clockwise direction in Fig. 6.At this moment, because the charging operating rod holding section 6d of charging operating rod 6 engages with the charging arm holding section 9a of charging arm 9, therefore, as shown in figure 15, charging arm 9 is center of rotation, rotates to counter clockwise direction with the axial region 1h of mirror case 1, and the cam pin 9c of charging arm 9 contacts with the lifter bottom surface 12a2 ' of charging cam 12a '.

Because charging arm 9 becomes the state of Figure 11, in Fig. 6, be the center, rotated to the charging operating rod 6 of clockwise direction reinforcing axial region 1b to clockwise direction with mirror case 1 by moving reflector driving spring 3.

Move to state shown in Figure 7 from state shown in Figure 6 by charging operating rod 6, the drive pin 20a that the shutter charging part 6c of charging operating rod 6 makes nipped shutter regulate parts 20 rotates upward, makes shutter regulate parts 20 and removes the position rotation from the charging end position of Fig. 6 to the charging of Fig. 7.

Rotate to clockwise direction by mirror drive operating rod 4, the drive pin contact site 4b of mirror drive operating rod 4 contacts with the mirror drive pin 2a of moving reflector 2.Like this, mirror drive operating rod 4 by mirror drive pin 2a, moving reflector 2 is rotated from the view finder observation place to camera positions shown in Figure 7.And the impact portions 6g of charging operating rod 6 is when contacting with the catoptron location division 1p of mirror case 1, and as shown in Figure 7, moving reflector 2 is regulated parts 20 to camera positions, shutter and moved to charging releasing position.Under state shown in Figure 6, because the catoptron return pin 2b of moving reflector 2 and the movable end 15b of the first moving reflector back-moving spring 15 contact, therefore, move (going up) by moving reflector 2 to camera positions, the first moving reflector back-moving spring 15 is recharged.

At this, under state shown in Figure 7, owing to keep first of operating rod 7 to keep the mirror drive operating rod holding section 4c engaging of operating rod holding section 7a to mirror drive operating rod 4, therefore, can prevent mirror drive operating rod 4 because the acting force of mirror drive operating rod back-moving spring 5 rotates to counter clockwise direction.Its result can keep the first moving reflector back-moving spring 15 with the state after the charging.

Below, just from Fig. 7 and state shown in Figure 15 when Fig. 8 and the state transitions shown in Figure 16 catoptron and the action of blade drive device describe.

If cam shaft gear 12 ' from state shown in Figure 15 is to counterclockwise rotating, then in Fig. 7 with cam shaft gear 12 ' maintenance remove maintenance that the lifter bottom surface 12b2 ' of cam 12b ' contact and remove the cam pivot pin 10c of arm 10 and jump to and contact on the lifter end face 12b1 ' that keeps removing cam 12b '.By keeping the cam pivot pin 10c that removes arm 10 to move to lifter end face 12b1 ' from keeping the lifter bottom surface 12b2 ' that removes cam 12b ', keeping releasing arm 10 is center of rotation with the axial region 1h of mirror case 1, rotate to clockwise direction, the acting force that opposing keeps removing arm back-moving spring 11 moves to state shown in Figure 16.

By keeping releasing arm 10 to rotate to clockwise direction, arm holding section 10a is removed in the maintenance of maintenance releasing arm 10 makes second of maintenance operating rod 7 keep operating rod holding section 7c mobile in Figure 16 downwards.

By keeping second of operating rod 7 to keep operating rod holding section 7c in Figure 16, to move downwards, keep operating rod 7 opposings to keep the acting force of operating rod back-moving springs 8, with the maintenance operating rod installation portion 6e of charging operating rod 6 be rotation axis, to counterclockwise rotating.If cam shaft gear 12 ' turn to state shown in Figure 16 then keeps operating rod 7 to turn to state shown in Figure 8.

If keep operating rod 7 to turn to state shown in Figure 8 like this, then keep the engaging of 7 pairs of mirror drive operating rods 4 of operating rod to interrupt, therefore, mirror drive operating rod 4 is by the acting force of mirror drive operating rod back-moving spring 5, axial region 1b with mirror case 1 is the center, to counterclockwise rotating.The mirror drive operating rod 4 that begins to carry out this rotational action turns to the state that collides Fig. 8 that the catoptron decline location division 1q of mirror case 1 stops by impact portions 4d.

Below, just from Fig. 8 and state shown in Figure 16 when Figure 13 and the state transitions shown in Figure 17 catoptron and the action of blade drive device describe.

If cam shaft gear 12 ' begin further to rotate to counter clockwise direction from state shown in Figure 16, then the cam pivot pin 9c that contacts with the lifter bottom surface 12a2 ' of charging cam 12a ' contacts with the lifting machine side 12a3 ' of charging cam 12a ', and the cam pivot pin 10c that contacts with the lifter end face 12b1 ' that keeps releasing cam 12b ' contacts with keeping the charging lifting machine side 12b3 ' that removes cam 12b '.

Because cam pivot pin 9c contacts with the lifting machine side 12a3 ' of charging cam 12a ', charging arm 9 is carried out rotating drive to the position of Figure 17.

Owing to cam pivot pin 10c contacts with keeping the charging lifting machine side 12b3 ' that removes cam 12b ', keep removing arm 10 quilts to the position of Figure 17 rotating drive.

Arm holding section 9a engages with charging operating rod holding section 6d if charging arm 9 to counterclockwise rotating, then charges, and looks at the direction of principal axis of axial region 1b, makes charging operating rod 6 to counterclockwise rotating.Like this, to counterclockwise rotating, the moving reflector driving spring 3 that movable end 3b and stiff end 3a are hung on the pillar 1g of the 6b of spring-loaded portion of charging operating rod 6 and mirror case 1 is carried out charging by charging operating rod 6.

If keeping removing arm 10 rotates to clockwise direction, then keeping removing arm holding section 10a and second keeps operating rod holding section 7c to contact, keep operating rod holding section 7c to be pressed into the right side with second, therefore, charging operating rod 6 is when counter clockwise direction is rotated, and keeping operating rod 7 is that rotation axis is to counterclockwise rotating with axial region 6e.

Like this, because keeping operating rod 7 is that rotation axis is to counterclockwise rotating with axial region 6e, therefore, charging operating rod 6 is when turning to the state of Figure 13, can make keep operating rod 7 keep out of the way first top that keeps operating rod holding section 7a not with the position of mirror drive operating rod holding section 4c collision.Like this, can avoid the mirror drive operating rod holding section 4c and first collision that keeps operating rod holding section 7a, improve the permanance of mirror drive operating rod 4 and maintenance operating rod 7, its result can provide permanance high camera.

In addition, because the drive pin 20a that the shutter charging part 6c of charging operating rod 6 regulates parts 20 with shutter forces down, therefore, shutter is regulated parts 20 and is turned to state shown in Figure 13.

Below, just the action from the state of Figure 13 and Figure 17 drive unit when the state transitions of Fig. 6 and Figure 14 describes.

If cam shaft gear 12 ' rotate to counter clockwise direction from state shown in Figure 17, then keep removing the charging lifter end face 12b4 ' interruption of cam 12b ', keep removing arm 10 by keeping removing arm back-moving spring 11 by afterburning rotationally to clockwise direction, therefore, cam pivot pin 10c contacts with keeping the lifter bottom surface 12b2 ' that removes cam 12b '.

If cam pivot pin 10c contacts with keeping the lifter bottom surface 12b2 ' that removes cam 12b ', then keep removing arm 10 and move to the position of Figure 14.Move to the position of Figure 14 in case keep removing arm 10, the engaging that keeps operating rod 7 and maintenance to remove arm 10 is interrupted, and as shown in Figure 6, first keeps operating rod holding section 7a one side to contact with mirror drive operating rod holding section 4c simultaneously moves.And, when the first maintenance operating rod holding section 7a interrupts the contact of mirror drive operating rod holding section 4c, be subjected to the maintenance operating rod 7 of the acting force of self-sustaining operating rod back-moving spring 8 to begin to carry out to clockwise rotational action, first keeps operating rod holding section 7a to be depressed.Its result, as shown in Figure 6, first keeps operating rod holding section 7a to move to the position that can engage with mirror drive operating rod holding section 4c.

In addition, if cam shaft gear 12 ' from state shown in Figure 17 is to counterclockwise rotating, then with cam shaft gear 12 ' the cam pin 9c that contact of the charging lifting machine side 12a3 ' of charging cam 12a ' and the lifter end face 12a1 ' that charges cam 12a contact.In case cam pin 9c moves to the lifter end face 12a1 ' of charging cam 12a ', 9 on arm of charging is rotated the position that is driven into Figure 14.

If charging arm 9 further rotates to clockwise direction from this state, the arm holding section 9a that then charges engages with charging operating rod holding section 6d, therefore, makes charging operating rod 6 further to counterclockwise rotating.To counterclockwise rotating, the moving reflector driving spring 3 that movable end 3b and stiff end 3a are hung on the pillar 1g of the 6b of spring-loaded portion of charging operating rod 6 and mirror case 1 becomes the state that is charged fully by charging operating rod 6.

Simultaneously, because the drive pin 20a that shutter charging part 6c regulates parts 20 with shutter forces down, therefore, shutter is regulated parts 20 and is rotated towards charging end position shown in Figure 6.When cam pin 9c contacted at the lifter end face 12a1 with charging cam 12a, the charging that shutter is regulated parts 20 finished, and did not have illustrated electromagnet and utilized its absorption affinity that preceding curtain (205a of Figure 18) and back curtain (205b of Figure 18) are remained on the charging end position.

Like this, by from the state of Fig. 6 to the state of the state of Fig. 7, Fig. 8, further to the state transitions of Figure 13, return the state of Fig. 6, in other words, by making cam shaft gear 12 ' one week of rotation, photography release once.

According to present embodiment, when catoptron and engaging part relatively move towards the position that can engage,, therefore, can avoid the collision of engaging part and catoptron because the relative catoptron of engaging part is kept out of the way.In addition, because second cam that utilizes the engagement release parts to engage with catoptron is kept out of the way the relative catoptron of engaging part, therefore, just can avoid the collision of engaging part and catoptron without added parts.By making the camera miniaturization like this.

Claims

1. camera, it is characterized in that, in mirror driving device, have catoptron (2), drive mirror drive parts, the first afterburning parts (15), the second afterburning parts (3), holding member (7), first cam (12a), second cam (12b) and the motor (17) of catoptron, mobile on the primary importance that this catoptron can be in being arranged on light path and the second place of outside above-mentioned light path, keeping out of the way; These first afterburning parts produce the acting force that above-mentioned catoptron is driven to above-mentioned primary importance from said second position; These second afterburning parts produce the acting force that above-mentioned catoptron is driven to said second position from above-mentioned primary importance via above-mentioned mirror drive parts; This holding member can carry out above-mentioned first maintenance of afterburning parts under charged state; The release portion (12a2) that this first cam has the charging part (12a1) that the above-mentioned second afterburning parts are charged and discharges this second afterburning parts charging; This second cam is removed the above-mentioned maintenance of being undertaken by above-mentioned holding member; The both sides of above-mentioned first and second cams of this motor driven, said motor only drives above-mentioned first and second cams to a direction.

2. camera as claimed in claim 1 is characterized in that, the above-mentioned second afterburning parts charge to the above-mentioned first afterburning parts via mirror drive parts and catoptron when said second position drives from above-mentioned primary importance at above-mentioned catoptron.

3. camera as claimed in claim 1 is characterized in that, described camera has shutter (20), when above-mentioned charging part is charged to the above-mentioned second afterburning parts, above-mentioned first cam charges to above-mentioned shutter.

4. camera as claimed in claim 1 is characterized in that, above-mentioned first and second cams are middle heart rotating drive with same axle.

5. camera, it is characterized in that, described camera has catoptron (2), mirror drive parts (4), the first afterburning parts (5), shutter (20), shutter driver part (6), link (7), the second afterburning parts (3), first cam (12a), second cam (12b) and motor (17), and this catoptron can move with respect to light path; These mirror drive parts can move on the primary importance and the second place, and this primary importance is that this catoptron is arranged in the above-mentioned light path, and this second place is that above-mentioned catoptron is kept out of the way outside the above-mentioned light path; These first afterburning parts produce the acting force that these mirror drive parts are driven to above-mentioned primary importance from said second position; This shutter driver part drives this shutter; This link is set on this shutter driver part, above-mentioned mirror drive parts is connected with this shutter driver part; These second afterburning parts produce the acting force that drives this shutter driver part, by this shutter driver part and above-mentioned link above-mentioned mirror drive parts are driven to said second position from above-mentioned primary importance; This first cam has charging part (12a1) and release portion (12a2), this charging part drives above-mentioned shutter driver part to direction that the above-mentioned second afterburning parts are charged, this release portion allows the driving of being undertaken by the above-mentioned second afterburning parts of this shutter driver part; This second cam is removed the connection of the above-mentioned mirror drive parts that undertaken by above-mentioned link on said second position; The both sides of above-mentioned first and second cams of this motor driven, said motor only drives above-mentioned first and second cams to a direction.

6. camera, it is characterized in that, described camera has catoptron (2), mirror drive parts (4), the first afterburning parts (5), the second afterburning parts (3), engaging part (7), first cam (12a ') and second cam (12b '), and this catoptron can move with respect to light path; These mirror drive parts can be in catoptron be arranged on light path primary importance and the catoptron second place of outside above-mentioned light path, keeping out of the way on move; These first afterburning parts produce the acting force that above-mentioned mirror drive parts are driven to above-mentioned primary importance from said second position; These second afterburning parts produce the acting force that above-mentioned mirror drive parts are driven to said second position from above-mentioned primary importance; This engaging part engages, stops the driving of these mirror drive parts that undertaken by the above-mentioned first afterburning parts with above-mentioned mirror drive parts; This first cam has charging part (12a1 ') and release portion (12a2 '), and this charging part is charged to the above-mentioned second afterburning parts, and this release portion discharges the charging of these second afterburning parts; This second cam is removed the engaging of above-mentioned engaging part to above-mentioned mirror drive parts, above-mentioned second cam be in above-mentioned mirror drive parts and above-mentioned engaging part when the position that can carry out above-mentioned engaging relatively moves, above-mentioned engaging part is kept out of the way with respect to above-mentioned mirror drive parts.

7. camera as claimed in claim 6 is characterized in that, has the motor (17) that drives the above-mentioned first and second cam both sides, and said motor only drives above-mentioned first and second cams to a direction.

8. camera as claimed in claim 6 is characterized in that, the above-mentioned second afterburning parts with above-mentioned mirror drive parts from above-mentioned primary importance when said second position drives, the above-mentioned first afterburning parts are charged.

9. camera as claimed in claim 6 is characterized in that, described camera has shutter (20), when by above-mentioned charging part the above-mentioned second afterburning parts being charged, above-mentioned first cam charges to above-mentioned shutter.

10. camera as claimed in claim 6, it is characterized in that, described camera has shutter (20), the above-mentioned second afterburning parts with above-mentioned mirror drive parts from above-mentioned primary importance when said second position drives, with above-mentioned shutter from charged state to the state-driven of allowing that charging discharges.

11. camera, it is characterized in that, described camera has catoptron (2), mirror drive parts (4), the first afterburning parts (5), shutter (20), shutter driver part (6), engaging part (7), the second afterburning parts (3), first cam (12a ') and second cam (12b '), and this catoptron can move with respect to light path; These mirror drive parts can be in catoptron be arranged on light path of photography primary importance and the catoptron second place of outside above-mentioned light path of photography, keeping out of the way on move; These first afterburning parts produce the acting force that these mirror drive parts are driven to above-mentioned primary importance from said second position; This shutter driver part drives this shutter; This engaging part is set on this shutter driver part, engages with above-mentioned mirror drive parts; These second afterburning parts produce the acting force of this shutter driver part of driving and by this shutter driver part and above-mentioned engaging part above-mentioned mirror drive parts are driven to said second position from above-mentioned primary importance; This first cam has charging part (12a1 ') and release portion (12a2 '), this charging part drives above-mentioned shutter driver part to direction that the above-mentioned second afterburning parts are charged, this release portion allows the driving of being undertaken by the above-mentioned second afterburning parts of this shutter driver part; This second cam is removed the engaging of above-mentioned engaging part to the above-mentioned mirror drive parts that move to said second position, above-mentioned second cam above-mentioned shutter driver part by above-mentioned charging part when driving with upper/lower positions, the above-mentioned relatively mirror drive parts of above-mentioned engaging part are kept out of the way, and this position is the position that above-mentioned engaging part can engage the above-mentioned mirror drive parts that move to above-mentioned primary importance.

12. camera as claimed in claim 11 is characterized in that, has the motor that drives the above-mentioned first and second cam both sides, said motor only drives above-mentioned first and second cams to a direction.