JP2001249397A - Camera apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize speed up of operation and quiet sound in the case of consecutive photographing, without complicating the structure with respect to a camera apparatus equipped with a movable type reflection mirror. SOLUTION: This camera apparatus, equipped with a photographic film 10, a shutter 20 consisting of a front blade group 21 and a rear blade group 22, an optical finder 30 and a reflecting mirror 40, is provided with a mirror driving means and a shutter driving means, for repeatedly making charge of the shutter 20 and the release thereof, in a state where the mirror 40 is held at a retreat position in the case of consecutive photographing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-lens reflex camera having an optical finder function, and more particularly to a single-lens reflex camera having a mode for continuously photographing a subject.

[0002]

2. Description of the Related Art A conventional single-lens reflex camera apparatus includes a shutter for performing light-shielding and exposure operations on a photographic medium including a film or an image pickup device (CCD).
An optical finder for confirming (framing, etc.) a subject during photographing, and a reflection oscillatingly arranged between a reflection position for guiding the subject light to the optical finder and a retracting position for guiding the subject light to the photographing medium. There are known mechanisms including a mechanism for charging a mirror and a shutter, and a mechanism for moving a reflection mirror to a retracted position when taking an image or to a reflection position when looking into an optical finder.

In this camera apparatus, the operation of moving the reflection mirror and the operation of charging and releasing (releasing) the shutter are always linked, so that in the case of continuous shooting in which continuous shooting is performed. In addition, the reflecting mirror can be reciprocated between the reflecting position and the retracted position for each photographing in conjunction with the operation of the shutter.

Further, in a camera device including the above-mentioned components, there is known a camera device further provided with a manual knob for moving the reflection mirror to a retracted position so that the interlocking operation between the shutter and the reflection mirror can be separated. Have been. In this camera device, at the time of continuous photographing, this manual knob is operated to move the reflection mirror to the retracted position, and thereafter, continuous photographing can be performed only by the operation of charging and releasing the shutter. It is.

[0005]

By the way, in the above-mentioned conventional camera device, during continuous photographing, the reflecting mirror reciprocates between the reflecting position and the retracted position for each photographing.
In some cases, the impact sound or the like due to the reciprocating motion of the reflecting mirror is inferior in quality. there were. Also,
The reciprocating movement of the reflection mirror itself takes time, or
Since it takes time for the reflecting mirror to converge from the bound state at the retracted position, the time required for each photographing becomes long, and the number of continuous photographing frames per unit time is limited.

Further, in a camera device having a manual knob, the above-mentioned problem is solved because the reflecting mirror does not reciprocate during continuous photographing. It is necessary to perform the operation, and the operation of the manual knob itself is troublesome. In addition, when performing continuous shooting quickly, there is a problem that the operation of the manual knob takes time and the timing is missed. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. It is an object of the present invention to reduce the noise of the apparatus and instantaneous continuous photographing without complicating the structure. And a single-lens reflex camera device that can increase the number of frames of continuous shooting per unit time and can improve the handleability, convenience, etc., at the time of shooting as a whole. To provide.

[0008]

According to the present invention, there is provided a camera device comprising:
A photographing medium for photographing a subject, a shutter movable between a closed position covering the opening with respect to the photographing medium and an open position for opening the opening, an optical viewfinder for confirming the subject at the time of photographing; A continuous mirror for continuously photographing the subject with respect to the photographing medium, including a reflecting mirror movably arranged between a reflection position for guiding the subject light to the viewfinder and a retracting position for guiding the subject light to the photographing medium; It is characterized by having continuous photographing driving means for driving so as to repeatedly perform charging and releasing operations of the shutter while holding the reflection mirror at the retracted position during photographing. According to the above configuration, in the case of continuous shooting (for example, when the continuous shooting mode is selected), the continuous shooting driving unit is operated, and the shutter is charged and the shutter is held in the retracted position. The release (release) operation is repeatedly performed. Therefore, continuous photographing can be rapidly performed on the photographing medium without incurring impact noise, vibration, or bouncing that occurs when the reflecting mirror reciprocates in conjunction.

In the above configuration, a photosensitive photographic film or a charge-coupled type image pickup device can be used as a photographic medium. According to the above configuration, continuous photographing of the subject is performed on the photographing film or the image sensor.

In the above configuration, the continuous photographing driving means includes:
Mirror driving means for driving the reflection mirror to be positioned and held at the retracted position during continuous shooting, and shutter driving means for driving the shutter so as to repeatedly charge and release the charge during continuous shooting. A configuration having the following can be adopted. According to the above configuration, at the time of continuous photographing (for example, when the continuous photographing mode is selected), the mirror driving means operates to keep the reflecting mirror at the retracted position, while the shutter driving means operates the shutter. , So that the charge and the release (release) of the charge are repeatedly performed.

In the above arrangement, the mirror driving means is associated with the first swing lever which is swingably disposed with one end engaged with a part of the reflection mirror, and the other end of the first swing lever. A first cam member having a cam height for moving the reflection mirror between the reflection position and the retraction position by rotational driving and holding the reflection mirror in the retraction position during continuous photographing; A means for driving the shutter, a set lever rotatably disposed to be able to engage with the drive lever to set the charge of the shutter, and one end of which is engaged with a part of the set lever. A second swing lever, which is swingably arranged in a state,
A cam that engages with the other end of the swing lever and that can repeatedly move the set lever back and forth between a set position where the shutter charge is set by a rotational drive during continuous shooting and a release position where the shutter charge can be released. And a second cam member having a height. According to the above configuration, when the first swing lever is rotated to position the reflection mirror at the retraction position during continuous photographing, the cam height of the cam area of the first cam member for holding the reflection mirror at the retraction position. (For example, the base circle area) acts to keep the reflection mirror in the retracted position. At the same time, when the second cam member is rotationally driven (for example, reciprocatingly rotated within a predetermined angle range), the shutter is driven via the second swing lever and the set lever, and the charge and the release of the charge ( Release) operation is repeatedly performed.

In the above structure, the shutter has a front blade group and a rear blade group, and the driving lever is biased to move the front blade group to the open position, and closes the rear blade group. A rear blade drive lever biased to move to the position, the set lever moves the front blade drive lever and the rear blade drive lever to the set position when setting the charge of the shutter, It is possible to adopt a configuration having an engaging portion capable of engaging with each of the leading blade driving lever and the trailing blade driving lever. According to the above configuration, when setting the charge of the shutter, the front blade drive lever moves against the urging force to position the front blade group in the closed position, and the rear blade drive lever moves the front blade drive lever to the closed position. The rear blade group is positioned at the open position by moving against the power. This completes the charging (energy storage) of the shutter for the exposure operation. On the other hand, when releasing the charge of the shutter, the leading blade drive lever moves by the biasing force to position the leading blade group to the open position, and then the trailing blade drive lever moves by the biasing force to move the trailing blade group. Position in closed position. Thus, the exposure operation is performed on the photographing medium, and the above operation is repeatedly performed during continuous photographing.

Further, the camera device of the present invention comprises a charge-coupled image sensor for photographing a subject, and a shutter movable between a closed position for covering the opening with respect to the image sensor and an open position for opening the opening. An optical finder for confirming the subject at the time of shooting, and a reflecting mirror movably arranged between a reflection position for guiding the subject light to the optical finder and a retracting position for guiding the subject light to the image sensor, An image display unit that displays an image obtained through the imaging element,
A camera device capable of selecting one of an optical finder and an image display unit as a finder for confirming a subject at the time of photographing. It is characterized by having continuous photographing driving means for driving the shutter so as to repeatedly perform the charge operation and the charge release operation of the shutter while holding it at the retracted position. According to the above configuration, in the case of continuous shooting (for example, when the continuous shooting mode is selected), the continuous shooting driving unit is operated, and the shutter is charged and the shutter is held in the retracted position. The release (release) operation is repeatedly performed. Therefore, continuous imaging can be rapidly performed on the image pickup device without incurring impact noise, vibration, or bouncing that occurs when the reflection mirror reciprocates in conjunction.

In the above configuration, the continuous photographing driving means includes
Mirror driving means for driving the reflection mirror to be positioned and held at the retracted position during continuous shooting, and shutter driving means for driving the shutter so as to repeatedly charge and release the charge during continuous shooting. A configuration having the following can be adopted. According to the above configuration, at the time of continuous photographing (for example, when the continuous photographing mode is selected), the mirror driving means operates to keep the reflecting mirror at the retracted position, while the shutter driving means operates the shutter. , So that the charge and the release (release) of the charge are repeatedly performed.

In the above arrangement, the mirror driving means is associated with the first swing lever which is swingably arranged with one end engaged with a part of the reflection mirror, and the other end of the first swing lever. A first cam member having a cam height for moving the reflection mirror between the reflection position and the retraction position by rotational driving and holding the reflection mirror in the retraction position during continuous photographing; A means for driving the shutter, a set lever rotatably disposed to be able to engage with the drive lever to set the charge of the shutter, and one end of which is engaged with a part of the set lever. A second swing lever, which is swingably arranged in a state,
A cam that engages with the other end of the swing lever and that can repeatedly move the set lever back and forth between a set position where the shutter charge is set by a rotational drive during continuous shooting and a release position where the shutter charge can be released. And a second cam member having a height. According to the above configuration, when the first swing lever is rotated to position the reflection mirror at the retraction position during continuous photographing, the cam height of the cam area of the first cam member for holding the reflection mirror at the retraction position. (For example, the base circle area) acts to keep the reflection mirror in the retracted position. At the same time, when the second cam member is rotationally driven (for example, reciprocatingly rotated within a predetermined angle range), the shutter is driven via the second swing lever and the set lever, and the charge and the release of the charge ( Release) operation is repeatedly performed.

In the above configuration, the shutter has a front blade group and a rear blade group, and the drive lever is biased to move the rear blade group to the closed position, and the drive lever is closed to close the front blade group. A first leading blade drive lever biased to move the first leading blade drive lever to the open position; and a second leading blade drive biased to engage the first leading blade drive lever to move the leading blade group to the open position. A set lever moves the rear blade drive lever and the second front blade drive lever to the set position when setting the charge of the shutter; and
The rear blade drive lever, the first blade drive lever, the first blade drive lever, the first blade drive lever, the first blade drive lever, the first blade drive lever, the first blade drive lever, and the first blade drive lever.
It is possible to adopt a configuration having an engaging portion that can engage with each of the leading blade drive lever and the second leading blade drive lever. According to the above configuration, when setting the charge of the shutter, the rear blade drive lever moves against the urging force to position the rear blade group at the open position, and the second front blade drive lever moves , Move against the bias. This completes the charging (energy storage) of the shutter for the exposure operation. On the other hand, the first leading blade drive lever is
The movement is restricted by the set lever, and the front blade group is held at the open position. In this state, subject light is incident on the image sensor, and a captured image can be displayed on the image display unit, and the image display unit can function as a finder. On the other hand, when releasing the charge of the shutter, first, the first front blade drive lever is moved by the urging force to deploy the front blade group to the closed position, and thereafter, the second front blade drive lever is moved by the urging force. To move the front blade group together with the first front blade drive lever to the open position, and then to move the rear blade drive lever to the closed position by moving the rear blade drive lever in the reverse direction by the biasing force. . As a result, the reset (initialization) operation and the exposure operation for the image sensor are performed, and the above-described operation is repeatedly performed during continuous photographing.

Further, in the above two configurations, the first invention
A configuration in which the cam member and the second cam member are formed integrally with two gears, respectively, and the two gears are driven in conjunction with one drive motor can be adopted. According to the above configuration, since the mirror driving unit and the shutter driving unit are driven by one driving source, the structure can be simplified, and the cost can be reduced by reducing the number of components. Further, since the first cam member and the second cam member are interlocked, the reflecting mirror and the shutter can be reliably driven at a desired timing and without any displacement between the two.

Further, in the above configuration, the driving motor is
It is possible to adopt a configuration in which the rotation direction is alternately switched in a predetermined angle range during continuous shooting. According to the above configuration, the time required for charging the shutter and releasing (release) the shutter can be set short, and as a result, the number of continuous shooting frames per unit time can be increased.

[0019]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 8
1 to 3 show a camera device according to an embodiment of the present invention. FIGS. 1 to 3 are side views showing the internal structure, FIG. 4 is a front view showing the internal structure, and FIG. 5 drives a shutter. FIG. 6 to FIG. 8 are front views showing a part of the shutter driving means, and FIG. 6 to FIG. In FIGS. 6 to 8, for convenience of description, a hidden line to be indicated by a dotted line is indicated by a solid line, and a part to be indicated by a solid line is indicated by a dotted line.

As shown in FIGS. 1 to 4, a camera device according to this embodiment includes a photosensitive photographic film 10 as a photographic medium disposed at the innermost portion facing a photographic lens (not shown); A front blade group 21 and a rear blade group 22 for performing light-shielding and exposure operations on the photographic film 10
And the like, an optical finder 30 for confirming an object at the time of photographing, a reflection position for guiding the object light L to the optical finder 30 and the photographic film 10
A reflecting mirror 40 movably arranged between a retracting position for guiding the subject light L to the mirror, mirror driving means for driving the reflecting mirror 40, shutter driving means for driving the shutter 20, and control for various controls A unit (CPU) and the like are provided as its basic configuration.

The optical viewfinder 30 is, as shown in FIG.
1. In the optical path of the subject light L, there are provided a concave lens 32 disposed on the upstream side of the eyepiece lens 31, a prism 33 that reflects the subject light L reflected by the reflection mirror 40 and changes its direction.

As shown in FIGS. 1 to 3, the front blade group 21 and the rear blade group 22 constituting the shutter 20 are disposed upstream of the photographic film 10 in the optical path of the subject light L. To perform the light-shielding and exposure operations for. That is, the opening 101a
, A middle plate (not shown) that similarly defines an opening, and a cover plate 102 that similarly defines an opening 102 a are sequentially spaced apart in the optical path direction of the subject light L. A front blade group 21 is arranged between the base plate 101 and the intermediate plate. The front blade group 21 overlaps at a position below the openings 101a and 102a, and expands upward to expand the opening. Is to be covered. Further, a rear blade group 22 is disposed between the intermediate plate and the cover plate 102, and the rear blade group 22 has an opening 1
01a and 102a are overlapped at a position above, and developed downward to cover the opening.

As shown in FIGS. 1 to 4, the reflecting mirror 40 includes a pivot 41 attached to the base plate 101, a mirror 42 for reflecting the subject light, a frame 43 for holding the mirror 42, This frame 43
Engagement pin 44 provided integrally with the projection and projecting in the horizontal direction.
And the like. And, as shown in FIG.
The optical finder 30 reflects the entered subject light L in a state in which the subject light L is inclined at approximately 45 ° with respect to the traveling direction of the subject light L.
2 and 3, a swing position around the pivot 41 between a retreat position for guiding the subject light L to the photographic film 10 in a direction substantially parallel to the traveling direction of the subject light L, as shown in FIGS. It has become. Note that the reflection mirror 40 includes a pivot 41
Biasing spring such as a torsion spring (not shown) disposed around the frame 43 or a tension spring (not shown) stretched between the frame 43 and a part of the apparatus main body, ie, downward toward the reflection position. It is urged to rotate.

The mirror driving means includes a driving motor 60 started in response to a control signal output from the control unit, a gear train 70 driven by the driving motor 60, and one gear 74 of the gear train 70. A mirror-up cam 81 as a first cam member integrally formed and having a cam height corresponding to the reflection position and the retreat position of the reflection mirror 40 and corresponding to the retreat position for continuous photographing; A first end (other end) 91 is engaged with 81 and a second end (one end) 92 is engaged with the engagement pin 44 of the reflection mirror 40. It has.

As shown in FIGS. 1 and 4, the mirror driving means is arranged in a region of the support plate 103 and the holding plate 104 having a surface in a direction substantially perpendicular to the surface of the base plate 101. That is, as shown in FIG. 4, the drive motor 60 is fixed to the holding plate 104, the spindle 61 projects into the space between the support plate 103 and the holding plate 104, and the drive gear 62 is fixed to the spindle 61. Have been.

As shown in FIGS. 1 and 4, a first gear 71 rotatably arranged around a support shaft 71a is meshed with the drive gear 62. The first gear 71 Axis 7
A second gear 72 rotatably arranged around 2a is meshed. The second gear 72 has a support shaft 73a.
A third gear 73 rotatably arranged around the third gear 73 is meshed with the third gear 73, and a fourth gear 74 arranged rotatably around the support shaft 74a is meshed with the third gear 73. . These first gear 71, second gear 72, third gear 7
The gear train 70 including the third and fourth gears 74 is rotatably supported between the support plate 103 and the holding plate 104.

A mirror up cam (first cam member) 81 is integrally formed on the side surface of the fourth gear 74. The mirror up cam 81 is provided with a support shaft 74a.
, A base surface portion (base circle portion) 81a having the lowest cam height, a transition surface portion 81b in which the cam height gradually increases continuously to the base surface portion 81a, and further continuous to the transition surface portion 81b. And a maximum lift surface portion 81c having a constant highest cam height over a predetermined range. That is, the maximum lift surface portion 81c of the mirror up cam 81 corresponds to the reflection position of the reflection mirror 40, and the base surface portion 81a of the mirror up cam 81 corresponds to the retreat position of the reflection mirror 40.

A mirror up lever (first swing lever) 90 is arranged between the support plate 103 and the holding plate 104 so as to be swingable around the support shaft 100. 1 to 3 is rotated clockwise in FIG. 1 to FIG. 3 by a biasing spring such as a torsion spring or a tension spring (not shown) locked at a predetermined distance from the support shaft 100. Is being biased. This mirror up lever 90
The first end (other end) 91 is engaged with a mirror-up cam 81 formed on the fourth gear 74 from above, and
The second end (one end) 92 is engaged with the engagement pin 44 of the reflection mirror 40 from below. That is, FIG.
As shown in the figure, the first end 91 of the mirror up lever 90
Is engaged with the maximum lift surface portion 81c of the mirror up cam 81, the reflection mirror 40 is located at a reflection position where the object light can be reflected toward the optical finder 30. In the state shown in FIG. 1, the charge of the shutter 20 is set by the operation of a shutter driving unit described later.

From the state of FIG. 1 located at this reflection position,
When the drive motor 60 is rotated forward (rotated counterclockwise in FIG. 1) and the fourth gear 74 is rotated approximately 110 ° counterclockwise, as shown in FIG.
The end portion 91 engages with the base surface portion 81a via the transition surface portion 81b of the mirror up cam 81, the mirror up lever 90 rotates clockwise, and the second end portion 92 raises the engagement pin 44 upward. Push up towards. As a result, the reflection mirror 40 is swung upward, and is positioned at the retreat position where the reflection mirror 40 becomes substantially horizontal. When the reflection mirror 40 is located at the retracted position, the subject light L travels straight toward the photographic film 10 without being blocked by the reflection mirror 40. In the state shown in FIG. 2, the charge of the shutter 20 is held and the front blade group 21 is located at the closed position by the operation of a shutter driving unit described later.

From the state of FIG. 2 located at the retracted position,
When the drive motor 60 is further rotated forward and the fourth gear 74 further rotates approximately 100 ° counterclockwise, the first end 91 of the mirror up lever 90 is moved to the position of the mirror up cam 81 as shown in FIG. The mirror-up lever 90 is kept in the same position as in FIG. 2 without rotating, while continuing to engage on the base surface portion 81a. Therefore, from the state shown in FIG. 2 to the state shown in FIG. 3, the reflection mirror 40 is kept at the retracted position. In the state shown in FIG. 3, the charge of the shutter 20 is released and the front blade group 21 is moved to the open position and the rear blade group 22
Are in the closed position.

Subsequently, from the state shown in FIG. 3, when the drive motor 60 is rotated in the reverse direction (clockwise rotation in FIG. 3) and the fourth gear 74 rotates clockwise by approximately 100 °, as shown in FIG. In addition, since the base surface portion 81a of the mirror up cam 81 continues to act on the first end portion 91 of the mirror up lever 90, the mirror up lever 90 holds the reflection mirror 40 at the retreat position without swinging. become. On the other hand, the charge of the shutter 20 is set again by the operation of the shutter driving means described later, and the rear blade group 22 is moved to the open position and the front blade group 21 is moved to the closed position.

That is, the reflection lever 40 is held at the retracted position by being alternately driven from the state shown in FIG. 2 to the state shown in FIG. 3 and from the state shown in FIG. 3 to the state shown in FIG. In this state, the shutter 20 can be repeatedly charged and released (released).

The drive motor 60, the first gear 71, the second
A gear train 70 including a gear 72, a third gear 73, and a fourth gear 74, a mirror-up cam (first cam member) 81 integrally formed with the fourth gear 74, and a mirror-up lever (first swing lever) ) 90 and the like constitute mirror driving means for driving the reflection mirror 40 to be positioned and held at the retracted position during continuous photographing.

The shutter driving means includes the driving motor 60
And a gear train 70 ′ driven by the drive motor 60.
(First gear 71, second gear 72, and third gear 73)
And a front blade drive lever 110 for driving the front blade group 21
And a rear blade drive lever 120 for driving the rear blade group 22
And a shutter 2 including a front blade group 21 and a rear blade group 22
In order to set the charge of 0, the above-mentioned front blade drive lever 1
10 and a set lever 130 rotatably disposed so as to be able to engage with the rear blade drive lever 120, and swingable with a first end (one end) 141 engaged with a part of the set lever 130. A charge lever 140 as a second swing lever disposed on the
A second cam having a cam height for rotating the set lever 130 between a set position where the charge of the shutter 20 is set by engagement with the end (other end) 142 and a release position where the charge of the shutter 20 can be released; A charge cam 82 and the like as a cam member are provided.

This shutter driving means is shown in FIGS.
As shown in FIGS. 5 to 8, the support plate 10
3 and press plate 104 and base plate 1
01 on the front side and the back side. That is,
A charge cam (second cam portion) 82 is integrally formed on a side surface of the third gear 73 arranged in the region of the support plate 103 and the holding plate 104.
The charge cam 82 includes a base surface portion 82a having the lowest cam height in the vicinity of the support shaft 73a and a base surface portion 82a.
transition surface portion 8 in which the cam height gradually increases following a
2b and a substantially heart-shaped symmetrical cam having a maximum lift surface portion 82c continuous with the transition surface portion 81b and having a constant highest cam height over a predetermined range. The maximum lift surface portion 82c of the charge cam 82 corresponds to a position where the charging of the shutter 20 (the front blade group 21 and the rear blade group 22) is completed, and the base surface portion 82a of the charge cam 82 corresponds to the shutter 20 (the front blade group 21). And the position where the charge of the rear blade group 22) can be released.

A charge lever (second swing lever) is provided between the support plate 103 and the holding plate 104.
140 is swingably arranged around the support shaft 100. Then, a biasing spring such as a torsion spring (not shown) disposed around the support shaft 100 or a tension spring (not shown) stretched between the support shaft 100 and the apparatus main body at a predetermined distance from the support shaft 100 is used. The spring urges the charge lever 140 to rotate clockwise in FIG. This charge lever 140
The second end 142 is engaged from above with a charge cam (second cam member) 82 formed on the third gear 73, and the first end 141 is connected to the set lever 130.
Are engaged with the projections (parts) 131 from above.

That is, as shown in FIG. 1, when the second end 142 of the charge lever 140 is engaged with the maximum lift surface portion 82c of the charge cam 82, as shown in FIG.
As shown in (a), the set lever 130 is rotated clockwise to be positioned at the set position where the charge of the shutter 20 is set.

In this state, when the drive motor 60 is rotated, for example, in the reverse direction (clockwise rotation in FIG. 1) and the third gear 73 (charge cam 82) rotates approximately 150 ° counterclockwise, as shown in FIG. So, charge lever 140
The second end 142 is a transition surface 82b of the charge cam 82.
And engages with the base surface portion 82a via the
The reference numeral 40 rotates clockwise, the first end 141 moves upward, and the set lever 130 reversely rotates in a direction in which the protrusion 131 rises, thereby allowing the shutter 20 to perform light shielding and exposure operations ( The shutter charge can be released).

The set lever 130 is shown in FIGS.
As shown in the figure, on the front surface of the base plate 101,
The torsion spring (not shown) disposed in the area of the support shaft 130a is urged to rotate counterclockwise in FIGS. 4 and 5 by a torsion spring (not shown) arranged around the support shaft 130a. Have been. Then, the protrusion 131
However, with respect to the first end 141 of the charge lever 140,
It is always engaged from below. As shown in FIG. 5, the set lever 130 is formed by a forwardly projecting portion 131, a curved first engaging portion 132, a similarly curved second engaging portion 133, and the like.

As shown in FIG. 5, a leading blade driving lever 110 and a trailing blade driving lever 120 are disposed in an area near the upper and lower sides of the set lever 130.
As shown in FIG. 5, the front blade drive lever 110 is rotatably disposed around the support shaft 110a on the front surface of the base plate 101 and in a diagonally lower region of the bar 130 as a set. It is urged to rotate clockwise in FIG. 5 by a torsion spring (not shown) arranged in the region. The leading blade driving lever 110 extends rearward through the curved guide groove 101b and engages with a part of the leading blade group 21 with the first engaging portion 111 that can engage with the first engaging portion 132 of the set lever 130. Second engaging portion 112 and iron piece portion 1 attracted by magnetic force
13 and the like.

As shown in FIG. 5, the rear blade drive lever 120 is rotatably disposed around the support shaft 120a on the front surface of the base plate 101 and in a region obliquely above the set lever 130. FIG. 5 shows a torsion spring (not shown) arranged in the region 120a.
It is biased to rotate clockwise inside. Also,
The rear blade drive lever 120 extends rearward through the curved guide groove 101 c and engages with a part of the rear blade group 22 through the first engagement portion 121 that can be engaged with the second engagement portion 133 of the set lever 130. Formed by a second engaging portion 122 and an iron piece 123 attracted by magnetic force.

The front blade drive lever 110, rear blade drive lever 120, set lever 130, charge lever 1
The shutter drive means for driving the shutter 20 so as to repeatedly charge and release the charge of the shutter 20 at the time of continuous photographing is constituted by the charge cam 40, the charge cam 82, and the like. Further, during continuous photographing in which the subject is continuously photographed on the photographing film 10 by the mirror driving means and the shutter driving means, the shutter 20 is charged and charged while the reflecting mirror 40 is held at the standby position. The continuous photographing driving means for driving the reflection mirror 40 and the shutter 20 is configured so as to repeatedly perform the releasing operation of.

The front blade group 21 constituting the shutter 20 includes:
As shown in FIG. 6, four front blades 21a, 21b, 21c, 21d arranged on the back side of the base plate 101.
And two link members 21e and 21f that rotatably link these front blades. One end 21e 'of the link member 21e is rotatably disposed around a support shaft 110a provided on the base plate 101, and one end 21e' of the link member 21f.
f ′ is a pivot 21 g provided on the base plate 101.
Are arranged so as to be rotatable around the. The second engaging portion 112 of the leading blade drive lever 110 is engaged with the link member 21e. Therefore, the front blade group 21
Can be reciprocally moved between a closed position for closing the opening 101a and an open position for opening the opening 101a in conjunction with the rotation of the leading blade drive lever 110. I have.

The rear blade group 22 constituting the shutter 20 includes:
As shown in FIG. 8, four front blades 22a, 22b, 22c, 22d arranged on the back side of the base plate 101.
And two link members 22e and 22f that rotatably link these rear blades. One end 22 e ′ of the link member 22 e is rotatably disposed around a support shaft 120 a provided on the base plate 101, and one end 22 e of the link member 22 f.
f ′ is a pivot 22g provided on the base plate 101
Are arranged so as to be rotatable around the. The second engaging portion 122 of the rear blade drive lever 120 is engaged with the link member 22e. Therefore, the rear blade group 22
Can be reciprocally moved between a closed position for closing the opening 101a and an open position for opening the opening 101a in conjunction with the turning operation of the rear blade drive lever 120. I have.

On the other hand, the set lever 130 and the front blade driving lever 1 which are arranged in front of the base plate 101
10, and in front of the rear blade drive lever 120, as shown in FIG.
05 is arranged. Then, the support shafts 110a and 110a are
0a, 130a and the like are held.

On the back side of the circuit board 105, a front blade electromagnet 150 and a rear blade electromagnet 160 are mounted. As shown in FIG. 5 (b), the front blade electromagnet 150 and the rear blade electromagnet 160 have iron cores 150a and 160a, respectively.
Electromagnetic coils 150b, 160b wound around 0a
And the like. And these electromagnetic coils 1
When the electric current is applied to the electromagnets 50b and 160b, an electromagnetic force is generated, and the electromagnet 150 for the front blade and the electromagnet 1 for the rear blade are generated.
60 attracts the iron piece 113 of the leading blade drive lever 110 and the iron piece 123 of the trailing blade drive lever 120, respectively.

The relationship between the leading blade driving lever 110, the trailing blade driving lever 120, and the set lever 130 is as follows. First, when the set lever 130 is at the rest position (release position) where it is not pushed down by the charge lever 140. The front blade drive lever 110 and the rear blade drive lever 120 are both rotated clockwise by the urging force of the torsion spring, and are in the rest position (return position) as shown in FIG. In this state, as shown in FIG. 8, the shutter 20 (the front blade group 21 and the rear blade group 22) is located at the release position where the front blade group 21 overlaps, and at the closed position where the rear blade group 22 is deployed. are doing.
That is, the state shown in FIG. 8 corresponds to a state before the charge (energy accumulation) of the shutter 20 is set (or a state after the exposure operation).

Subsequently, when the set lever 130 is pushed down by the charge lever 140 and rotates clockwise by approximately 90 ° to reach the set position, as shown in FIG. 132 is the leading blade drive lever 110
Of the second engaging portion 13
3 engages with the first engaging portion 121 of the rear blade drive lever 120. Then, the leading blade drive lever 110 is rotated counterclockwise while resisting the urging force of the torsion spring.
At the same time, the rear blade drive lever 120 is also rotated counterclockwise while resisting the urging force of the torsion spring. In this state, as shown in FIG. 6, the shutter 20 (the front blade group 21 and the rear blade group 22) is located at the closed position where the front blade group 21 is deployed, and is located at the open position where the rear blade group 22 overlaps. are doing. That is, the state shown in FIG. 6 corresponds to the state after the charge of the shutter 20 is set.

Subsequently, the release of the set lever 130 by the charge lever 140 is released by the release operation, and the set lever 130 is rotated counterclockwise by the urging force of the torsion spring as shown in FIG. 5B. And start returning to the return position. At this time, first, the electromagnet 150 for the front blade and the electromagnet 160 for the rear blade are respectively energized, and the electromagnet 150 for the front blade is driven by the front blade drive lever 110.
, And the rear blade electromagnet 160 attracts the iron piece 123 of the rear blade drive lever 120. Thereby, the first engaging portion 132 and the second engaging portion 133 of the set lever 130 are connected to the first engaging portion 111 of the leading blade driving lever 110 and the first engaging portion 1 of the trailing blade driving lever 120.
Even when the lever 21 is disengaged, the front blade drive lever 110 and the rear blade drive lever 120 are maintained in the state where they are rotated counterclockwise. In this state, the shutter 20 (the leading blade group 21 and the trailing blade group 22) is located at the closed position where the leading blade group 21 is deployed, as shown in FIG.
Are located in the overlapping open position. That is, the state shown in FIG. 7 corresponds to the state immediately after the release of the shutter 20 (the state in which the set lever 130 returns and the charge of the shutter 20 can be released).

In the state shown in FIG. 7, when the energization to the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off, first, the front blade drive lever 110 is rotated clockwise by the urging force of the torsion spring. I do. As a result, the leading blade group 21 is moved from the closed position where the front blade group 21 is unfolded and covers the opening 101a to the open position where it is overlapped below the opening 101a. Subsequently, after a predetermined time (exposure time t), the rear blade drive lever 120 rotates clockwise by the urging force of the torsion spring. As a result, the rear blade group 22 is developed from the overlapping open position above the opening 101a, and is moved to the closed position covering the opening 101a. By the operations of the front blade group 21 and the rear blade group 22, the exposure operation on the photographic film 10 is performed.

Next, the operation of the camera device according to this embodiment in accordance with the shooting mode will be described with reference to FIG. First, when the photographing mode of the camera device is set to the normal mode (single image taking), as shown in FIG. 9, when the drive motor 60 is rotated forward, as shown in FIG. 90 is a mirror up cam 81
Due to the action of the (maximum lift surface portion 81c), the mirror 40 rotates counterclockwise, and the reflection mirror 40 is positioned at the reflection position. The charge lever 140 rotates counterclockwise by the action of the charge cam 82 (maximum lift surface portion 82c).
The shutter is charged by operating the set lever 130 (see FIG. 5A), and the rear blade group 22 moves to the open position to open the opening 101a, while the front blade group 21 expands. It moves to the closed position and covers the opening 101a (see FIG. 6). In this state, the photographer can look into the optical finder 30 and perform framing and the like of the subject.

Thereafter, when the shutter is released, the electromagnet 150 for the front blade and the electromagnet 160 for the rear blade are energized, and the drive motor 60 is rotated in the reverse direction. Then, the charge cam 82 rotates approximately 150 ° counterclockwise, and the second end 142 of the charge lever 140 enters the region of the base surface portion 82a of the charge cam 82 as shown in FIG. As a result, the set lever 130 is moved to the rest position (release position).
And the shutter 20 can be released from charge (see FIGS. 5B and 7). On the other hand, the mirror up cam 81 rotates clockwise approximately 150 °, and the first end portion 91 of the mirror up lever 90 is engaged with the base surface portion 81a of the mirror up cam 81 as shown in FIG.
The mirror up lever 90 rotates clockwise to position the reflection mirror 40 at the retracted position.

By reversing the driving motor 60 in this manner, as shown in FIG. 1, the second end 142 of the charge lever 140 is moved in a short stroke through the right transition surface portion 82b of the charge cam 82. It can enter the area of the surface 82a. Therefore, the time required for release can be shortened as compared with the case where the drive motor 60 is directly rotated forward.

Thereafter, the energization of the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off. Then, after an exposure time t, the rear blade group 22 is deployed to cover the opening 101a and moves to the closed position (see FIGS. 5C and 8). By the exposure operation of the front blade group 21 and the rear blade group 22, an object is photographed on the photographing film 10. Thereafter, the drive motor 60 is rotated forward again, and the state shown in FIG. 1 is established, and the shutter 20 is charged, and framing or the like through the optical finder 30 is enabled.

Next, in this state, the shooting mode of the camera device is set to the continuous shooting mode (continuous shooting) (continuous shooting SW-ON).
When the shutter is released, the electromagnet 150 for the front blade and the electromagnet 160 for the rear blade are energized, and when the reflection mirror 40 is located at the reflection position,
The drive motor 60 is further rotated forward from the state shown in FIG. Then, as shown in FIG. 2, the charge cam 82 is clockwise approximately 110 ° and the mirror-up cam 81 is approximately 1 clockwise.
By rotating each counterclockwise by 10 °, the mirror up lever 90 rotates clockwise while the charge state of the shutter 20 by the charge lever 140 and the set lever 130 is held, thereby positioning the reflection mirror 40 at the retracted position. .

Subsequently, the drive motor 60 is further rotated forward from the state shown in FIG. Then, the charge cam 82
Rotates clockwise approximately 100 ° and the mirror up cam 8
1 rotates approximately 100 ° counterclockwise. At this time, with the mirror-up lever 90 holding the reflection mirror 40 at the standby position, the set lever 130 returns to the rest position (release position), and the shutter 20 can be released from charge. Even when the set lever 130 returns to the rest position, the charged state of the shutter 20 is maintained by energizing the electromagnet 150 for the front blade and the electromagnet 160 for the rear blade. Thereafter, the energization of the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off, and first, the front blade group 21 which is deployed and in the closed position is moved below the opening 101a (open position). After the exposure time t, the rear blade group 22 is deployed to cover the opening 101a and moves to the closed position. The subject is photographed on the photographing film 10 by the exposure operation of the front blade group 21 and the rear blade group 22,
The shooting of one frame ends.

Next, from the state shown in FIG.
Is reversed, the charge cam 82 rotates approximately 100 ° counterclockwise, and the mirror-up cam 81 rotates approximately 100 ° clockwise, resulting in the state shown in FIG. At this time,
Since the first end portion 91 of the mirror up lever 90 continues to be engaged with the base surface portion 81a of the mirror up cam 81, the charge lever 140 and the set lever 130 are kept in a state where the reflection mirror 40 is kept at the retracted position. Only the shutter 20 is charged.

Thereafter, the electromagnet 150 for the leading blade and the electromagnet 160 for the trailing blade are energized, and the drive motor 60 is rotated forward from the state shown in FIG. Then, as shown in FIG. 3, the charge cam 82 rotates approximately 100 ° clockwise, and the mirror up cam 82 rotates approximately 100 ° counterclockwise. As a result, the set lever 130 returns to the rest position (release position) while the reflection mirror 40 is held at the retracted position, and the charge of the shutter 20 can be released. Thereafter, the energization of the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off, and first, the front blade group 21 which is deployed and is in the closed position is opened.
The rear blade group 22 moves below the opening 1a (open position), and after the exposure time t, spreads to cover the opening 101a and moves to the closed position. The subject is photographed on the photographing film 10 by the exposure operation of the front blade group 21 and the rear blade group 22, and the photographing of the second frame is completed.

Again, from the state shown in FIG.
Is reversed, the charge cam 82 rotates approximately 100 ° counterclockwise, and the mirror-up cam 81 rotates approximately 100 ° clockwise, resulting in the state shown in FIG. At this time,
Only while the reflection mirror 40 is kept at the standby position again, only the charging of the shutter 20 by the charging lever 140 and the set lever 130 is performed.

Thereafter, the electromagnet 150 for the leading blade and the electromagnet 160 for the trailing blade are energized, and the drive motor 60 is rotated forward from the state shown in FIG. Then, as shown in FIG. 3, the charge cam 82 rotates approximately 100 ° clockwise, and the mirror up cam 82 rotates approximately 100 ° counterclockwise. As a result, the set lever 130 returns to the rest position (release position) while the reflection mirror 40 is held at the retracted position, and the charge of the shutter 20 can be released. Thereafter, the energization of the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off, and first, the front blade group 21 which is deployed and is in the closed position is opened.
The rear blade group 22 moves below the opening 1a (open position), and after the exposure time t, spreads to cover the opening 101a and moves to the closed position. The subject is photographed on the photographing film 10 by the exposure operation of the front blade group 21 and the rear blade group 22, and the photographing of the third frame is completed. As described above, in the continuous shooting mode, the release switch is
During the period of N, the above-described sequence, that is, the charging of the shutter 20 and the releasing operation of the charge are repeated while the reflection mirror 40 is held at the standby position. Thereafter, when the release switch is turned off, the reflection mirror 40 is immediately positioned at the reflection position as shown in FIG. 1, and the subject can be confirmed by the optical finder 30.

According to this embodiment, since continuous photographing is performed while the reflection mirror 40 is held at the retracted position, the speed of continuous photographing can be increased, that is, the number of photographing frames per unit time can be increased. Further, since the rotation direction of the drive motor 60 is alternately switched during continuous shooting, the time required for a series of sequences of charging and releasing the shutter 20 can be reduced. In this embodiment, the case where the photosensitive photographic film 10 is used as the photographic medium has been described. However, it is needless to say that a charge-coupled image pickup device (CCD) can be used.

FIGS. 10 to 18 show another embodiment of the camera device according to the present invention. In the embodiment shown in FIG. An image display unit for displaying an image is provided,
The image display unit and the optical finder can be appropriately selected as a finder function, and the shutter driving mechanism is changed. Therefore, only portions different from the above-described embodiment will be described below. Here, FIGS. 10 to 12 are side views showing the internal structure,
13 and 14 are front views showing a part of shutter driving means for driving the shutter, and FIGS. 15 to 18 are front views showing operating states of the shutter. 15 through FIG.
In FIG. 8, for convenience of explanation, a hidden line to be indicated by a dotted line is indicated by a solid line, and a part to be indicated by a solid line is indicated by a dotted line.

The camera device according to this embodiment is the same as that shown in FIG.
As shown in FIG. 12, an image pickup device (CCD) 200 disposed at the innermost portion facing a photographing lens (not shown).
A shutter 20 including a front blade group 21 and a rear blade group 22 for performing light shielding and exposure operations on the image sensor 200, an optical finder 30 for confirming a subject at the time of photographing, and an optical finder 30. A reflection mirror 40 movably arranged between a reflection position for reflecting and guiding the subject light L and a retreat position for guiding the subject light L to the image sensor 10
And an image display unit (LCD) 210 (see FIG. 2) for displaying an image obtained via the image sensor 200 as its basic configuration.

This camera apparatus is also used as a mirror driving means for driving the reflection mirror 40, a shutter driving means for driving the shutter 20, and an optical finder for confirming a subject at the time of photographing. A finder selection unit for selecting one of the finder 30 and the image display unit 210, a signal processing unit for performing various signal processing, a control unit (CPU) for performing various controls, and the like are provided. Here, a function applied to confirm a subject for framing or the like prior to photographing (at the time of photographing) is referred to as a finder function (finder function), and is used to confirm a photographed image after photographing. The function applied to is referred to as a monitor function (monitor function).

The shutter driving means includes the driving motor 6 described above.
0 and a gear train 70 driven by the drive motor 60
'(First gear 71, second gear 72, and third gear 73)
And a first front blade drive lever 23 for driving the front blade group 21
0 and the second front blade drive lever 240, the rear blade drive lever 250 for driving the rear blade group 22, and the second front blade drive lever 240 for setting the charge of the shutter 20 including the front blade group 21 and the rear blade group 22. A set lever 260 rotatably disposed so as to be able to engage with the rear blade drive lever 250; and a swingably disposed state in which the first end (one end) 141 is engaged with a part of the set lever 260. The charge lever 140 as a second swing lever, which is engaged with the second end (other end) 142 of the charge lever 140, can set the charge of the shutter 20 and release the charge of the shutter 20. A charge cam 82 and the like as a second cam member having a cam height for rotating the set lever 260 to and from the release position are provided.

The set lever 260 is disposed on the front surface of the base plate 101 so as to be rotatable around a support shaft 1260a, and is provided by a torsion spring (not shown) disposed in the region of the support shaft 260a. And is urged to rotate counterclockwise in FIG.
The protrusion 261 is the first end 1 of the charge lever 140.
41 is always engaged from below. As shown in FIG. 13A, the set lever 260 has a first engaging portion 262a and a second engaging portion 2 which are integrally formed with a forwardly projecting portion 261 and are curved.
62b having the same front surface 62b as the front surface 2b.
62 and an arcuate portion 263
a and the relief portion 263b are formed by a regulating portion 263 having the same plane.

Further, as shown in FIG. 13 and FIG.
Front blade drive lever 230, second front blade drive lever 24
0, a rear blade drive lever 250 and the like are arranged. As shown in FIGS. 13 and 14, the second front blade drive lever 240 is rotatably disposed around the support shaft 240a on the front surface of the base plate 101 and in a region obliquely below the bar 260 as a set. , This support shaft 240a
By the torsion spring (not shown) arranged in the area of
It is urged to rotate clockwise in FIG.
Further, the second front blade drive lever 240 includes a first engagement portion 241 that can be engaged with the first engagement portion 262a of the set lever 260, and a portion (second engagement portion) of the first front blade drive lever 230. The second engaging portion 242 capable of engaging with the portion 232), the iron piece portion 243 attracted by magnetic force, and the like.

As shown in FIGS. 13 and 14, the rear blade drive lever 250 is provided at the front surface of the base plate 101 and at a region obliquely above the set lever 260.
A torsion spring (not shown) is disposed so as to be rotatable around 50a, and is disposed in the region of the support shaft 250a.
Thus, it is urged to rotate clockwise in FIG. Further, the rear blade drive lever 250 extends rearward through the first engagement portion 251 that can be engaged with the second engagement portion 262b of the set lever 260 and the curved guide groove 101c to form a part of the rear blade group 22. A second engaging portion 252 to be engaged;
It is formed by an iron piece 253 and the like attracted by magnetic force.

As shown in FIGS. 13 and 14, the first front blade drive lever 230 is also rotatable about the support shaft 240a on the front surface of the base plate 101 and behind the second front blade drive lever 240. Is located in
A torsion spring (not shown) arranged in the region of the support shaft 240a urges the countershaft to rotate counterclockwise in FIG. Further, the first leading blade drive lever 230 includes a first engaging portion 231 that can engage with the regulating portion 263 (arc-shaped portion 263 a) of the set lever 260 and a second engaging portion 231 of the second leading blade drive lever 240. A second engaging portion 232 capable of engaging with the portion 242, and a third engaging portion 233 extending rearward through the curved guide groove 101b and engaging with a part of the leading blade group 21.
And the like.

The first and second front blade drive levers 230, 240, the rear blade drive lever 250, the set lever 260, the charge lever 140, the charge cam 82 and the like are used to charge and release the shutter 20 during continuous shooting. In order to release the charge repeatedly,
When the image display unit 210 is selected as a finder,
A shutter driving unit that drives the shutter 20 is configured to position the leading blade group 21 and the trailing blade group 22 of the shutter 20 at the open position. Further, the shutter 2 is held by the mirror driving means and the shutter driving means in a state where the reflection mirror 40 is held at the retracted position during continuous photographing.
A continuous photographing driving unit is configured to drive so as to repeatedly perform the charge operation of 0 and the release operation of the charge. Further, the above-described mirror driving means, shutter driving means,
The optical viewfinder 30 and the image display unit 21 are operated by an external viewfinder selection button (not shown) which can be operated by the photographer.
A finder selecting means is provided which can select one of the two to function as a finder for confirming a subject at the time of photographing.

On the rear side of the base plate 101, a shutter 20 composed of a front blade group 21 and a rear blade group 22 having the same configuration as that of the above-described embodiment is arranged, while on the front side of the base plate 101, Set lever 2
The circuit board 105 as shown in FIG. 4 is arranged with the first, second and third front blade drive levers 230, 240, and 250 sandwiched therebetween. Then, the support shafts 240a, 250a, 260a and the like are held by the circuit board 105 and the base plate 101.

On the back surface of the circuit board 105, the same electromagnets 150 and 160 for the front and rear blades as those in the above-described embodiment are attached. The leading blade electromagnet 150 and the trailing blade electromagnet 160 are shown in FIG.
As shown in FIG. 3, the magnetic heads are constituted by iron cores 150a and 160a, and electromagnetic coils 150b and 160b wound around the iron cores 150a and 160a, respectively. When the electromagnetic coils 150b and 160b are energized, an electromagnetic force is generated and the electromagnets 15
The zero and rear blade electromagnets 160 are configured to attract the iron piece 243 of the second front blade drive lever 240 and the iron piece 253 of the rear blade drive lever 250, respectively.

FIG. 13 shows the relationship among the set lever 260, the first front blade drive lever 230, the second front blade drive lever 240, and the rear blade drive lever 250.
As shown in (a), first, when the set lever 260 is at the rest position (release position) where it is not pushed down by the charge lever 140, the second leading blade drive lever 24
0 is rotated clockwise by the urging force of the torsion spring and is at a rest position (return position) shown in FIG. At this time, the second engaging portion 232 of the first leading blade drive lever 230 is pushed by the second engaging portion 242 of the second leading blade drive lever 240. Therefore, the first front blade drive lever 230 is opposed to the biasing force biased to rotate counterclockwise by the torsion spring.
Is located at the rest position rotated clockwise together with the second leading blade drive lever 240. That is, the biasing force of the torsion spring that biases the second front blade drive lever 240 clockwise is set to be larger than the biasing force of the torsion spring that biases the first front blade drive lever 230 counterclockwise. .

The rear blade drive lever 250 is rotated clockwise by the urging force of the torsion spring, and is in the rest position (return position) shown in FIG. In this state, the shutter 20 (the leading blade group 21 and the trailing blade group 22) is located at the open position where the leading blade group 21 overlaps as shown in FIG. are doing. That is, this corresponds to a state before the charge (energy accumulation) of the shutter 20 is set (or a state after the exposure operation).

Subsequently, when the set lever 260 is pushed down by the charge lever 140 and rotates clockwise by approximately 90 ° to reach the set position, as shown in FIG. 262a engages with the first engaging portion 241 of the second leading blade drive lever 240, and the second engaging portion 262b engages with the first engaging portion 2 of the trailing blade drive lever 250.
51 is engaged. Then, the second leading blade drive lever 240
Is rotated counterclockwise while resisting the biasing force of the torsion spring. At this time, the first leading blade drive lever 230
Is that the second engaging portion 232 is
0, and is slightly counterclockwise rotated by the biasing force of the torsion spring. At the same time, the first
The first engaging portion 231 of the leading blade driving lever 230 has a restricting portion 263 (arc-shaped portion 263a) of the set lever 260.
, And further rotation in the counterclockwise direction is restricted. Also, the rear blade drive lever 250 is rotated counterclockwise while resisting the urging force of the torsion spring. In this state, the shutter 20 (the front blade group 21 and the rear blade group 22) moves the front blade group 2 as shown in FIG.
1 are located at the overlapped open position, and the rear blade group 22 is also located at the overlapped open position. That is, this corresponds to the state after the charge of the shutter 20 is set. In this state, as shown in FIG. 11, the subject light L is guided to the image sensor 200, so that the image display unit 210 can be used as a finder.

Subsequently, the release of the set lever 260 by the charge lever 140 is released by the release operation, and the set lever 260 is turned counterclockwise by the urging force of the torsion spring as shown in FIG. It starts rotating and returning to the return position. At this time, first, the electromagnet 150 for the front blade and the electromagnet 160 for the rear blade are respectively energized, and the electromagnet 150 for the front blade attracts the iron piece 243 of the second front blade drive lever 240, and the electromagnet for the rear blade 160 attracts the iron piece 253 of the rear blade drive lever 250. Thereby, the first engagement portion 2 of the set lever 260
62a and the second engaging portion 262b are connected to the first engaging portion 241 and the rear blade driving lever 25 of the second front blade driving lever 240.
Even if the second engaging member 251 is disengaged from the first engaging portion 251, the second leading blade driving lever 240 and the trailing blade driving lever 250 are held in the state rotated counterclockwise. In this state, the shutter 20 (the front blade group 21 and the rear blade group 22)
As shown in FIG. 17, the front blade group 21 is located at the open position where it overlaps as it is, and the rear blade group 22 is also located at the open position where it overlaps as it is. That is, this corresponds to a state immediately after the release of the shutter 20 (a state where the set lever 260 is performing a return operation).

Subsequently, when the set lever 260 is rotated counterclockwise by the urging force of the torsion spring and reaches the rest position (release position) as shown in FIG. First engaging portion 231 of drive lever 230
Is separated from the restricting portion 263 of the set lever 260.
As a result, the first leading blade drive lever 230 rotates counterclockwise due to the urging force of the torsion spring, and its second engaging portion 232 abuts on the second engaging portion 242 of the second leading blade drive lever 240. (Engagement), the rotation stops. In this state, the shutter 20 (the leading blade group 21 and the trailing blade group 22) is located at a closed position where the leading blade group 21 is deployed to close the opening 101a as shown in FIG. 22 is located at the overlapping open position as it is. That is, this corresponds to a state in which the image sensor 200 is reset (initialized) immediately after the shutter 20 is released and immediately before the exposure operation is performed.

In the state shown in FIG. 18, when the energization of the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off, first, the second front blade drive lever 240 is rotated clockwise by the urging force of the torsion spring. And the second engaging portion 242 of the second leading blade driving lever 240 pushes the second engaging portion 232 of the first leading blade driving lever 230, so that the first leading blade driving lever 230 also has a torsion spring. Rotates clockwise against the urging force of. As a result, the leading blade group 21 is moved from the closed position where the front blade group 21 is unfolded and covers the opening 101a to the open position where it is overlapped below the opening 101a. Subsequently, after a predetermined time (exposure time t), the rear blade drive lever 250 rotates clockwise by the urging force of the torsion spring. As a result, the rear blade group 22 is developed from the overlapping open position above the opening 101a, and is moved to the closed position covering the opening 101a. By the operation of the front blade group 21 and the rear blade group 22, the exposure operation for the image sensor 200 is performed in a high-speed and stable state.

When the optical viewfinder 30 is selected by the viewfinder selecting means to perform the viewfinder function, as shown in FIG. 10, the mirror up lever 90 is moved to the mirror up cam 81 (maximum lift surface 81).
By rotating counterclockwise by the action of c), the reflection mirror 4
0 is positioned at the reflection position, while the charge lever 140
Is rotated counterclockwise by the action of the charge cam 82 (maximum lift surface portion 82c), the set lever 260 is operated to perform the charging operation of the shutter 20, the rear blade group 22 moves to the open position, and the The part 101a is opened. Therefore, in this state, the subject light is guided to the optical finder 30 via the reflection mirror 40, so that the photographer can perform framing or the like by looking into the optical finder 30.

On the other hand, when the image display unit 210 is selected to perform the finder function, as shown in FIG. 11, the shutter 20 is charged by the set lever 260 and the mirror up lever 9
Positioning of the reflection mirror 40 at the retracted position by 0 is performed. As a result, the subject light enters the image sensor 200 through the opened opening 101a without being blocked by the reflection mirror 40. Accordingly, in this state, the image of the subject captured via the image sensor 200 is displayed on the image display unit 210.
In this state, the photographer can perform framing or the like by viewing the displayed image using the image display unit 210 as a finder.

Next, the operation of the camera device according to this embodiment in accordance with the shooting mode will be described. First, when the photographing mode of the camera device is set to the normal mode (single image taking), as shown in FIG. 19, when the drive motor 60 is rotated forward, as shown in FIG. Is the mirror up cam 81 (maximum lift surface 81
The mirror 40 rotates counterclockwise by the action of c), and
Is located at the reflection position. Also, charge lever 1
The shutter 40 rotates counterclockwise by the action of the charge cam 82 (maximum lift surface portion 82c), and operates the set lever 260 to charge the shutter (FIG. 13).
(See (b)), the rear blade group 22 moves to the open position to open the opening 101a, and the front blade group 21 is also held at the open position. (See FIG. 16). In this state, the photographer can look into the optical finder 30 and perform framing and the like of the subject.

Thereafter, when the shutter is released, the leading blade electromagnet 150 and the trailing blade electromagnet 160 are energized, and the drive motor 60 is rotated in the reverse direction. Then, the charge cam 82 rotates approximately 150 ° counterclockwise, and as shown in FIG.
As shown in (2), the second end 142 of the charge lever 140 enters the area of the base surface 82a of the charge cam 82.
As a result, the set lever 260 is returned to the rest position (release position), and the shutter 20 can be released from charge. On the other hand, the mirror up cam 81 is approximately 150 °
When the first end portion 91 of the mirror-up lever 90 engages with the base surface portion 81a of the mirror-up cam 81 as shown in FIG. 12, the mirror-up lever 90 rotates clockwise. Then, the reflection mirror 40 is positioned at the standby position. When the set lever 260 returns to the rest position (release position), the first front blade drive lever 23
0 rotates counterclockwise due to the urging force of the torsion spring, and the leading blade group 21 is positioned at the deployed closed position (see FIG. 18). At this time, the image sensor 200 is reset (initialized).

As described above, by rotating the drive motor 60 in the reverse direction, as shown in FIG. 10, the second end 142 of the charge lever 140 is moved in a short stroke through the right transition surface 82b of the charge cam 82. It can enter the surface portion 82a. Therefore, the time required for release can be shortened as compared with the case where the drive motor 60 is directly rotated forward.

Thereafter, the energization of the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off, and first, the front blade group 21 which is deployed and is in the closed position is located below the opening 101a (open position). Then, after the exposure time t, the rear blade group 22 is deployed so as to cover the opening 101a and moves to the closed position (see FIG. 15). By the exposure operation of the front blade group 21 and the rear blade group 22, a subject is photographed on the image sensor 200. Then, the drive motor 6
0 is rotated forward to the state shown in FIG. 10, the shutter 20 is charged, and the optical viewfinder 3 is turned on.
It becomes possible to perform framing or the like while looking into 0.

Next, in this state, the shooting mode of the camera device is set to the continuous shooting mode (continuous shooting) (continuous shooting SW-ON).
When the shutter is released, the electromagnet 150 for the front blade and the electromagnet 160 for the rear blade are energized, and when the reflection mirror 40 is located at the reflection position,
The drive motor 60 is further rotated forward from the state shown in FIG. Then, as shown in FIG.
2 rotates approximately 110 ° clockwise and the mirror up cam 81 rotates approximately 110 ° counterclockwise,
While the charge state of the shutter 20 by the charge lever 140 and the set lever 260 is maintained, the mirror up lever 90 rotates clockwise to position the reflection mirror 40 at the retreat position.

Subsequently, the drive motor 60 is further rotated forward from the state shown in FIG. And charge cam 8
2 rotates approximately 100 ° clockwise, and the mirror up cam 81 rotates approximately 100 ° counterclockwise. At this time, with the mirror up lever 90 holding the reflection mirror 40 at the retracted position, the set lever 260 returns to the rest position (release position), and the shutter 20 can be released from charge. Even when the set lever 260 returns to the rest position, the charged state of the shutter 20 is maintained by energizing the electromagnet 150 for the front blade and the electromagnet 160 for the rear blade. When the set lever 260 is returned to the release position, the first front blade drive lever 230 rotates counterclockwise to expand the front blade group 21 and cover the opening 101a, and reset the image sensor 200 ( (Initialization).
Thereafter, the leading blade electromagnet 150 and the rear blade electromagnet 16
0, the first blade group 21 that has been deployed and is in the closed position is moved below the opening 101a (open position), and after the exposure time t, the rear blade group 22 is turned off. It unfolds so as to cover the opening 101a and moves to the closed position. By the exposure operation of the front blade group 21 and the rear blade group 22, the subject is photographed on the image sensor 200, and the photographing of one frame is completed.

Next, from the state shown in FIG.
0 is reversed, the charge cam 82 rotates approximately 100 ° counterclockwise, and the mirror up cam 81 rotates approximately 100 °.
It rotates clockwise to the state shown in FIG. At this time, since the first end portion 91 of the mirror up lever 90 continues to be engaged with the base surface portion 81a of the mirror up cam 81, the reflection mirror 40 is kept in the retracted position and the charge lever 140 is kept. Only the charging of the shutter 20 by the set lever 260 is performed.

Thereafter, the leading blade electromagnet 150 and the rear blade electromagnet 160 are energized, and the drive motor 60 is rotated forward from the state shown in FIG. And FIG.
As shown in FIG. 7, the charge cam 82 rotates approximately 100 ° clockwise, and the mirror up cam 82 rotates approximately 100 ° counterclockwise. As a result, the set lever 260 returns to the rest position (release position) while the reflection mirror 40 is held at the retracted position, and the charge of the shutter 20 can be released. When the set lever 260 is returned to the release position, the first leading blade drive lever 230
Rotates counterclockwise to expand the front blade group 21 to cover the opening 101a, and resets (initializes) the image sensor 200. Thereafter, the energization of the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off, and first, the front blade group 21 which is deployed and in the closed position is moved below the opening 101a (open position). After the exposure time t, the rear blade group 22 is deployed to cover the opening 101a and moves to the closed position. By the exposure operation of the front blade group 21 and the rear blade group 22, the subject is photographed on the image sensor 200, and the photographing of the second frame is completed.

Again, from the state shown in FIG.
0 is reversed, the charge cam 82 rotates approximately 100 ° counterclockwise, and the mirror up cam 81 rotates approximately 100 °.
It rotates clockwise to the state shown in FIG. At this time, the charge lever 140 and the set lever 260 are kept in a state where the reflection mirror 40 is held at the retracted position again.
Only the shutter 20 is charged.

Thereafter, the leading blade electromagnet 150 and the trailing blade electromagnet 160 are energized, and the drive motor 60 is rotated forward from the state shown in FIG. And FIG.
As shown in FIG. 7, the charge cam 82 rotates approximately 100 ° clockwise, and the mirror up cam 82 rotates approximately 100 ° counterclockwise. As a result, the set lever 260 returns to the rest position (release position) while the reflection mirror 40 is held at the retracted position, and the charge of the shutter 20 can be released. When the set lever 260 is returned to the release position, the first leading blade drive lever 230
Rotates counterclockwise to expand the front blade group 21 to cover the opening 101a, and resets (initializes) the image sensor 200. Thereafter, the energization of the front blade electromagnet 150 and the rear blade electromagnet 160 is sequentially cut off, and first, the front blade group 21 which is deployed and in the closed position is moved below the opening 101a (open position). After the exposure time t, the rear blade group 22 is deployed to cover the opening 101a and moves to the closed position. The subject is photographed on the image sensor 200 by the exposure operation of the front blade group 21 and the rear blade group 22, and the photographing of the third frame is completed. As described above, in the continuous shooting mode, while the release switch is ON, the above-described sequence, that is, the charging of the shutter 20 and the releasing operation of the charge in a state where the reflection mirror 40 is held at the retracted position. Will be repeated. After that, when the release switch is turned off,
When the optical finder 30 is selected as the finder, the reflection mirror 40 is immediately positioned at the reflection position as shown in FIG. 10, and the object can be confirmed by the optical finder 30.

According to this embodiment, continuous photographing is performed while the reflection mirror 40 is held at the retracted position, so that the speed of continuous photographing can be increased, that is, the number of photographing frames per unit time can be increased. Further, since the rotation direction of the drive motor 60 is alternately switched during continuous shooting, the time required for a series of sequences of charging and releasing the shutter 20 can be reduced.

In the above-described embodiment, during continuous shooting, the image of the subject captured by the image sensor 200 may be instantaneously displayed on the image display unit 210 to perform framing or the like of the subject. It is possible.

[0093]

As described above, according to the camera apparatus of the present invention, during continuous photographing, the continuous photographing driving means is operated and the shutter is charged while the reflecting mirror is held at the retracted position. Since the releasing operation is repeatedly performed, continuous photographing can be performed quickly. Thus, the number of frames that can be continuously photographed per unit time can be increased. In addition, during continuous shooting, since the reflecting mirror is held at the retracted position without interlocking, the quality of the reflecting mirror can be improved without incurring impact noise, vibration, or bouncing due to reciprocating motion of the reflecting mirror. . Further, the continuous photographing driving means is constituted by a mirror driving means and a shutter driving means, and these are driven in conjunction with one driving source, so that the structure of the reflecting mirror and the shutter can be achieved while simplifying the structure. Can be reliably driven at a predetermined timing. Further, since the front blade group and the rear blade group are employed as the shutter, the exposure operation can be speeded up and stabilized.

[Brief description of the drawings]

FIG. 1 is a side view showing an internal structure of a camera device according to a first embodiment of the present invention.

FIG. 2 is a side view showing an internal structure of the camera device according to the first embodiment of the present invention.

FIG. 3 is a side view showing an internal structure of the camera device according to the first embodiment of the present invention.

FIG. 4 is a front view showing a part of driving means for a reflection mirror and a shutter in the first embodiment of the camera device according to the present invention.

5A and 5B are diagrams for explaining the operation of shutter driving means according to the present invention, wherein FIG. 5A shows a state after a shutter charge is set, FIG. 5B shows a state immediately after release, and FIG. FIG. 7 is an operation diagram showing a state before setting is performed.

FIG. 6 is a front view showing a state after a shutter has been charge-set;

FIG. 7 is a front view showing a state of a shutter immediately after release.

FIG. 8 is a front view showing a state before a shutter is charged set (or after an exposure operation).

FIG. 9 is a time chart showing the operation of the camera device according to the present invention.

FIG. 10 is a side view showing the internal structure of another embodiment of the camera device according to the present invention.

FIG. 11 is a side view showing the internal structure of another embodiment of the camera device according to the present invention.

FIG. 12 is a side view showing the internal structure of another embodiment of the camera device according to the present invention.

13A and 13B are diagrams illustrating the operation of shutter driving means according to the present invention, wherein FIG. 13A shows a state before the shutter charge is set, and FIG. 13B shows a state after the shutter charge is set. FIG.

14A and 14B are diagrams illustrating the operation of the shutter driving unit according to the present invention, wherein FIG. 14A is an operation diagram showing a state immediately after a release, and FIG. 14B is an operation diagram showing a state immediately before an exposure operation.

FIG. 15 is a front view showing a state before a shutter charge is set.

FIG. 16 is a front view showing a state in which a shutter charge is set.

FIG. 17 is a front view showing a state of a shutter immediately after release.

FIG. 18 is a front view showing a state of a shutter immediately before an exposure operation.

FIG. 19 is a time chart showing the operation of the camera device according to the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 photographing film (photographing medium) 20 (21, 22) shutter (front blade group, rear blade group) 30 optical finder 40 reflection mirror 60 drive motor 70 gear train 71 first gear, 73 third gear, 74 fourth gear 81 Mirror up cam (first cam member) 82 Charge cam (second cam member) 90 Mirror up lever (first swing lever) 91 First end (other end), 92 Second end (one end) 100 Support shaft 101a Opening part 110 Front blade drive lever 111 First engagement part 120 Rear blade drive lever 121 First engagement part 130 Set lever 131 Projection (part), 132 First engagement part, 1
33 Second engaging portion 140 Charge lever (second swing lever) 141 First end (one end), 142 Second end (other end) 150 Electromagnet for front blade 160 Electromagnet for rear blade 200 Image sensor (photographing medium) ) 210 image display section 230 first leading blade drive lever 231 first engagement portion, 232 second engagement portion 240 second leading blade drive lever 241 first engagement portion, 242 second engagement portion 250 rear blade drive lever 251 first engaging portion, 252 second engaging portion 260 set lever 261 projecting portion (part), 262a first engaging portion,
262b second engagement portion

Claims (11)

[Claims] 1. A photographing medium for photographing a subject, a shutter movable between a closed position covering an opening with respect to the photographing medium and an open position opening the opening with respect to the photographing medium, and an object for confirming the subject at the time of photographing. An optical viewfinder, a camera device comprising: a reflecting mirror movably disposed between a reflecting position for reflecting and guiding subject light to the optical finder and a retracting position for guiding subject light to a shooting medium; A continuous photographing driving means for driving the shutter so as to repeatedly perform charging and releasing operations of the shutter while holding the reflection mirror at the retracted position during continuous photographing of continuously photographing a subject. A camera device comprising: 2. The camera device according to claim 1, wherein the photographing medium is a photosensitive photographing film or a charge-coupled image pickup device. 3. The continuous photographing driving means includes: mirror driving means for driving the reflection mirror to be positioned and held at the standby position during continuous photographing; and charging and discharging the shutter during continuous photographing. 3. The camera device according to claim 1, further comprising: shutter driving means for driving the shutter so as to repeatedly release the charge. 4. The mirror drive means is associated with a first swing lever which is swingably disposed with one end engaged with a part of the reflection mirror, and the other end of the first swing lever. A first cam having a cam height for moving the reflection mirror between the reflection position and the retraction position by rotating and driving the reflection mirror at the retraction position during continuous photographing;
A cam member, wherein the shutter driving means is a driving lever for driving the shutter, and a set lever rotatably disposed so as to be able to engage with the driving lever to set the charge of the shutter. A second swinging lever that is swingably arranged with one end engaged with a part of the set lever, and engages with the other end of the second swinging lever and rotates during continuous shooting. A second cam member having a cam height capable of repeatedly reciprocating the set lever between a set position where the charge of the shutter is set by driving and a release position where the charge of the shutter can be released. The camera device according to claim 3, wherein: 5. The shutter has a front blade group and a rear blade group, and the driving lever includes a front blade driving lever biased to move the front blade group to an open position, and the rear blade. A rear blade drive lever biased to move the group to the closed position, wherein the set lever sets the front blade drive lever and the rear blade drive lever when setting a shutter charge. 5. The camera device according to claim 4, further comprising an engaging portion that can be engaged with each of the leading blade driving lever and the trailing blade driving lever so as to be moved to a position. 6. A charge-coupled image sensor for photographing a subject, a shutter movable between a closed position for covering the opening with respect to the image sensor and an open position for opening the opening, and an object for photographing. An optical viewfinder for confirmation, a reflecting mirror movable between a reflection position for guiding and guiding the subject light to the optical viewfinder and a retracting position for guiding the subject light to the imaging device, and an optical viewfinder obtained through the imaging device. An image display unit for displaying an image, and a camera device capable of selecting one of an optical finder and an image display unit as a finder for confirming a subject at the time of shooting, wherein the subject is continuously connected to the image sensor. During continuous shooting, the shutter is driven so as to repeatedly perform charging and releasing operations of the shutter while holding the reflection mirror at the retracted position. Having successive images driving means, a camera and wherein the. 7. The continuous photographing driving means includes: mirror driving means for driving the reflection mirror to be positioned and held at the retreat position during continuous photographing; 7. The camera device according to claim 6, further comprising: shutter driving means for driving the shutter so as to repeatedly release the charge. 8. The mirror drive means is associated with a first swing lever which is swingably arranged with one end engaged with a part of the reflection mirror, and the other end of the first swing lever. A first cam having a cam height for moving the reflection mirror between the reflection position and the retraction position by rotating and driving the reflection mirror and holding the reflection mirror at the retraction position during continuous photographing;
A cam member, wherein the shutter driving means is a driving lever for driving the shutter, and a set lever rotatably disposed so as to be able to engage with the driving lever to set a charge of the shutter. And a second swinging lever, which is swingably arranged with one end engaged with a part of the set lever, and engages with the other end of the second swinging lever and rotates during continuous shooting. A second cam member having a cam height capable of repeatedly reciprocating the set lever between a set position where the charge of the shutter is set by driving and a release position where the charge of the shutter can be released. The camera device according to claim 7, wherein: 9. The shutter includes a front blade group and a rear blade group, and the drive lever includes a rear blade drive lever biased to move the rear blade group to a closed position, and the front blade. A first front blade drive lever urged to move the group to the closed position; and a second front blade urged to engage the first front blade drive lever to move the front blade group to the open position. 2
A front blade driving lever, wherein the set lever moves the rear blade driving lever and the second front blade driving lever to the set position when setting the charge of the shutter; and the front blade group Engaging portions engageable with the rear blade driving lever, the first front blade driving lever, and the second front blade driving lever so as to restrict the movement of the first front blade driving lever so as to position the first front blade driving lever. 9. The camera device according to claim 8, comprising: 10. The first cam member and the second cam member are formed integrally with two gears, respectively, and the two gears are driven in conjunction with one drive motor. The camera device according to claim 4 or 8, wherein 11. The driving motor according to claim 1, wherein the plurality of
The camera device according to claim 10, wherein the rotation direction is alternately switched in a predetermined angle range.