JP3474689B2 - camera - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera into which a photographic film cartridge is loaded in the axial direction.

[0002]

2. Description of the Related Art A new photographic film cartridge for the purpose of simplifying the loading of a photographic film into a camera, improving the working efficiency in a developing room, and improving the handling of the photographic film is disclosed in US Pat. No. 4,634,306. Calligraphy, No. 483
No. 2275, JP-A-3-37645, and the like. When not in use, this photo film patrone stores all the photo film in the main body of the photo film, and when in use, the tip of the photo film is sent out from the film door by rotating the spool. Further, the photo film cartridge is provided with a light-shielding lid that opens and closes the entrance and exit of the film, and a data plate that is rotated coaxially with the spool. The data board is provided with a bar code indicating various data of the stored photo film on its surface, and equipment such as a camera reads the bar code and uses it for various controls.

In the above-mentioned photographic film cartridge, since the film leader portion does not project from the main body of the cartridge when it is not used, the method of inserting the photographic film cartridge into the camera from the axial direction of the main body of the cartridge is suitable. In this loading type, a large back cover for covering the back surface of the camera is not required, and a cartridge storage chamber into which the cartridge main body is inserted may be provided on the bottom surface of the camera or the like, and this may be covered with a bottom cover which is a cover member.

[0004]

In order to further improve the loadability of the camera in which the above-mentioned novel photographic film cartridge is loaded, the photographic film cartridge is automatically loaded to open the light-shielding lid and send out the photographic film. You can do it in a specific way. However, if this preparation for photographing is started before the bottom lid is closed, there is a problem that the photographic film is exposed by opening the light-shielding lid. Therefore, it is necessary to prepare for shooting only when the bottom cover is closed.

Further, when the preparation for photographing is performed by the closing operation of the bottom lid as described above, the preparation for photographing is also performed when the bottom lid is opened and closed without the photographic film cartridge being loaded in the cartridge storage room. However, there is a problem that the power is wasted.

The present invention is intended to solve the above problems, and an object thereof is to provide at low cost a camera equipped with a switch for detecting the open / closed state of the bottom lid and the presence / absence of a photo film cartridge in the interior of the cartridge storage room. And

[0007]

In order to solve the above-mentioned problems, the camera according to claim 1 is provided with a detection switch for detecting the presence / absence of a photo film cartridge in the cartridge storage chamber in conjunction with the closing operation of the bottom lid. It is provided inside the Patrone storage room.

According to the second aspect of the present invention, the camera is slidable along the inserting direction of the photographic film cartridge in the inside of the cartridge storage room, and the one end has a claw portion abutting against the end face on the leading side in the inserting direction of the photographic film cartridge. A first lever provided, a second lever that presses the first lever to further slide, and a switch plate that includes a metal contact piece that is slid by pressing the first lever that is slid by the second lever, The slide detection plate is composed of a contact plate having a plurality of contacts which are brought into contact with the metal contacts by sliding the switch plate.

Further, in the camera of the third aspect, when the first lever is slid by pressing the second lever, the contact between the claw portion of the first lever and the photographic film cartridge is released. Is.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 2 showing the camera of the present invention from the bottom side, on the front surface of the camera 34, a taking lens 35, a distance measuring light projecting window 36, a distance measuring light receiving window 37, a viewfinder 38, A strobe light emitting section 39 and the like are provided. Although not shown, a shutter button, a power switch, a liquid crystal display panel, etc. are provided on the upper surface of the camera 34.

An opening 40 into which the photographic film cartridge 8 is inserted from the axial direction is formed on the bottom surface of the camera 34, and behind this opening 40 is the photographic film cartridge 8.
There is provided a cartridge storage chamber 41 in which is stored.
Further, in the vicinity of the opening 40, it can be freely opened and closed between an open position that opens the opening 40 and a closed position that closes light tightly.
A bottom lid 42, which is a lid member, is assembled.

The photographic film cartridge 8 is a cartridge main body 10 composed of substantially semi-cylindrical cases 6 and 7, a spool 13 rotatably incorporated in the cases 6 and 7, and a light-shielding lid 16, and the cartridge main body 10. The photo film 12 is wound around a spool 13 and stored therein. The light-shielding lid 16 is moved by a rotation of about 90 ° between an open position (not shown) for opening the film entrance and exit and a light-tightly closed position. Further, an opening is provided on an end surface (not shown) of the cartridge body 10, that is, an end surface on the side to be inserted into the cartridge storage chamber 41, and the data of the photographic film stored therein is transmitted to the camera 34 from this opening. A data board with a barcode is printed.

The bottom lid 42 is rotatably supported by a pair of bearings 43 provided on the bottom surface of the camera 34. Between the bearings 43, the cartridge storage chamber 41
A leaf spring 44 for improving the loading property of the photographic film cartridge 8 is attached. This leaf spring 44
When the bottom cover 42 is in the open position, the bottom cover 42 is fixed to the open position by abutting the end edge of the bottom cover 42 on the axially supported side with a biasing force. This allows the camera 34 to be loaded with one hand when loading the photo film cartridge 8 into the camera 34.
The troublesome work of holding the bottom lid 42 in the open position while holding

A protrusion 46 is provided on the outer periphery of the opening 40, and a groove 47 is provided inside the bottom lid 42. Then, when the bottom lid 42 is closed, the projection 46 and the groove 47 are fitted to each other, so that the inside of the cartridge storage chamber 41 is kept light-tight. A pressing member 48, a hook-shaped projection 49, and a pressing projection 50 are provided on the inner surface of the bottom lid 42 so as to project toward the inside of the cartridge storage chamber 41.

The pressing member 48 is used for the cartridge storage chamber 4
When the bottom cover 42 is closed in a state where the photographic film cartridge 8 is loaded in the device 1, the end surface of the spool 13 is pressed to move the photographic film cartridge 8 to a predetermined position for further positioning. is there. Key-shaped protrusion 4
9 is for locking the bottom lid 42 in the closed position,
When the bottom lid 42 is closed, it is inserted into a slit 51 formed on the side of the opening 40 and engaged with a part of a lock member 52 provided on the side surface of the camera 34. When opening the bottom lid 42, the lock member 52 is slid to the left in the drawing. The pressing protrusion 50 presses one end of a component forming the cartridge detection switch when the bottom cover 42 is closed.

A film receiving port 54 into which the photographic film 14 delivered from the photographic film cartridge 8 is inserted is formed on the side wall inside the cartridge storage chamber 41. Behind the film receiving port 54, a taking lens 35
An aperture that determines the exposure range of the photographic film 14 and a pressure plate that imparts flatness to the photographic film 14 are arranged at a position facing the. Furthermore, a film roll chamber or the like for winding the exposed photographic film 14 in a roll shape is provided in the back.

In the upper part of the cartridge storage chamber 41,
A spool driving mechanism for rotating the spool 13 of the photo film cartridge 8 in the film feeding direction and the winding direction, and a light shielding lid driving mechanism for rotating the light shielding lid 16 between the open position and the closed position are incorporated. There is. The spool drive mechanism includes a key shaft 56 (see FIG. 4) that engages with the spool 13, and a plurality of gears and motors that rotate the key shaft 56. In addition, the light shielding lid drive mechanism,
It is composed of a drive shaft (not shown) inserted into a notch formed at the end of the light-shielding lid 16, a motor for rotating the drive shaft, and the like.

Further, between the front side wall inside the cartridge storage chamber 41 and between the front side wall and the front surface of the camera 34,
A cartridge detection switch 59 for detecting the presence / absence of the photo film cartridge 8 in the cartridge storage chamber 41 in association with the closing operation of the bottom lid 42 is incorporated. As shown in FIGS. 3 and 4 (A) and (B), the cartridge detection switch 59 includes a substrate 60, a first lever 61, a second lever 62, a lock member 63, a lock member 63, and a first lever 61 which are assembled inside the cartridge storage chamber 41. 1 lever spring 66, 2nd lever spring 6
7, a lock member spring 68, a switch plate 64, a contact plate 65, and a switch plate spring 69 that are assembled between the front side wall of the cartridge storage chamber 41 and the front surface of the camera 34.

1 and 4 to 6 show constituent parts of the cartridge detection switch 59 incorporated in the cartridge storage chamber 41 in (A) in order to avoid complication of the drawings, and (B). 2 shows the components of the cartridge detection switch 59 incorporated outside the cartridge storage chamber 41, and the component of (B) is operated by the pin 61a of the first lever 61 shown by the chain double-dashed line.

The board 60 has elongated holes 60a and 60b into which the pins 61a and 61b projecting from the first lever 61 are slidably inserted, and the pin 6 projecting from the second lever 62.
Slotted holes 60c into which 2a and 62b are slidably inserted,
60d and a hole 60e into which the pin 63a protruding from the lock member 63 is rotatably inserted are formed. In addition to these holes, spring hooks 70a, 70b, 70c are formed to which one ends of the springs 66, 67, 68 are hooked.

The first lever 61, the second lever 62 and the lock member 63 are formed with spring hook portions 61c, 62c and 63b to which the other ends of the springs 66 to 68 are hooked. The first lever 61 and the second lever 62 have pins 61,
61b, 62a, 62b and the long hole 6 into which these are inserted
0a to 60d so as to be slidable in the vertical direction, but when the bottom cover 42 is open, the spring 6
6, 67, the camera 34
Is located on the lower side. Also,
The spring hook portion 63b of the lock member 63 is positioned downward in the drawing, that is, on the upper side of the camera 34, by the bias of the spring 68.

A claw portion 74 protruding into the cartridge storage chamber 41 is integrally formed at the lower portion of the first lever 61 in the figure. The claw portion 74, as shown by the two-dot chain line in the figure,
When the photographic film cartridge 8 is inserted into the cartridge storage chamber 41, it comes into contact with the end surface of the cartridge body 10 in the insertion direction.

When the photo film cartridge 8 is further inserted into the cartridge storage chamber 41, the first lever 61 slides downward in the drawing against the bias of the spring 66, as shown in FIG. 5 (A). To be done. In the middle of this, the first lever 61
The protrusion 61d protruding from the side surface of the lock member 63 and the protrusion 63c protruding from the outer peripheral surface of the lock member 63 contact each other. And
Photo Film Patrone 8 is more Patrone storage room 41
When inserted, the convex portion 61d presses the convex portion 63c, and the lock member 63 is rotated clockwise in the figure against the bias of the spring 68. As a result, the convex portion 61d moves downward and hits the convex portion 63c in the figure, and the first lever 6
1 is locked.

In this state, the photographic film cartridge 8
The photographic film cartridge 8 will not jump out of the cartridge storage chamber 41 even if the pressing of the film is stopped. Further, although the photo film cartridge 8 is entirely housed in the cartridge storage chamber 41, the spool 13 and the light shielding lid 16 are not yet engaged with the key shaft 56 and the drive shaft.

When the bottom cover 42 is closed in the above state, the pressing protrusion 50 formed on the inside of the bottom cover 42 causes the second lever 62 to move.
Abutting one end 62d of At this time, the bottom lid 42
The pressing member 48 formed in the center of the spool slightly enters the end of the spool 13.

When the bottom lid 42 is further closed, FIG.
As shown in, the one end 62d of the second lever 62 is pressed by the pressing protrusion 50, and is slid downward in the drawing along the long holes 60c and 60d into which the pins 62a and 62b are inserted. Since the elongated hole 60d is bent in the direction of approaching the first lever 61 on the way, the other end 62e of the second lever 62 is formed.
Is a shoulder portion 61e formed near the middle of the first lever 61.
Will come into contact with. Further, since the pressing member 48 presses the spool 13, the photographic film cartridge 8 is further moved in the cartridge storage chamber 41, and the claw portion 74 is in contact with the end surface of the photographic film cartridge 8, so that the first
The lever 61 is also slid further.

The lock member 63 is released from the contact with the first lever 61 when the notch 61f of the first lever 61 reaches the position of the convex portion 63c, so that the spring 6 is released.
It is rotated to the original position by the bias of 8.

When the bottom lid 42 is closed, the protrusion 46 formed on the outer periphery of the opening 40 and the groove 47 of the bottom lid 42 are fitted to each other, and the hook-shaped projection 49 of the bottom lid 42 enters the slit 51. The lock member 52 is engaged. As a result, the bottom lid 42 is light-tightly closed. At this time, the photo film cartridge 8 is located at the lowermost end in the cartridge storage chamber 41, the key shaft 56 is fitted in the spool 13, and the drive shaft is inserted in the light shielding lid 16. Further, the bottom lid 42 is provided with the pressing protrusion 5
The first lever 61 is slid to the lowest end via 0 and the second lever 62. As a result, the claw portion 74 separates from the end surface of the photo film cartridge 8, so that no extra external force is applied to the photo film cartridge 8,
There will be no load on subsequent feeding.

The switch plate 64 is composed of a base 71 made of plastic and a metal contact piece member 72 assembled to the base 71. The base 71 is provided with a pressing piece 71a protruding toward the cartridge storage chamber 41 side, and the pressing piece 71a is inserted into an elongated hole 41a formed in the front side wall of the cartridge storage chamber 41. In addition, a spring hooking portion 71b to which one end of the spring 69 is hooked is formed on the base portion 71, and the other end of the spring 69 is hooked to a pin 41b protrudingly provided on the outer wall of the cartridge storage chamber 41. Due to the biasing force of the spring 69, the switch plate 64 is positioned above in the drawing, that is, below the camera 34.

The pressing piece 71a is arranged on the movement path of the pin 61a of the first lever 61 penetrating the elongated hole 60a, and when the first lever 61 slides downward in the figure, it is shown in FIG. Pin 61a and pressing piece 71a as shown
When the first lever 61 slides further due to the closing operation of the bottom lid 42, the pressing piece 71a is pressed by the pin 61a, as shown in FIG.
Slide down along. At this time, the entire switch plate 64 is moved downward in the figure against the bias of the spring 69.

The spring 69 has a stronger urging force than the spring 66 and has a shortened contraction stroke.
4 has a role of returning to the initial position and also a role of urging force when the photo film cartridge 8 is pushed out from the cartridge storage chamber 41 together with the spring 66.

The tip of the contact piece member 72 is bifurcated to form contact piece portions 72a and 72b, respectively. The contact pieces 72a, 72b are provided with elasticity so that the tip end portions thereof come into contact with the front surface side of the contact plate 65, and the first lever 6
When the switch plate 64 is slid by one slide, it slides on the contact plate 65.

The contact plate 65 is made of plastic and is mounted on the front surface outside the cartridge storage chamber 41. On the front surface of the contact plate 65, a long contact portion 65b with which the contact piece portion 72b of the contact piece member 72 is always in contact, and a short contact point with which the contact piece portion 72a is in contact when the switch plate 64 is slid downward. The part 65a is formed. These contact portions 65a and 65b are configured so that current can be conducted by attaching or locking a metal plate to the contact plate 65.

The switch plate 64 and the contact plate 65 are
It serves as a sensor section of a cartridge detection circuit incorporated in the camera 34. That is, the contact points 65a and 65b of the contact plate 65 are contacts that divide the Patrone detection circuit, and when the contact piece sections 72a and 72b are simultaneously contacted with the contact sections 65a and 65b of the contact plate 65, the Patrone detection circuit operates. When the camera 34 is closed, the control circuit of the camera 34 recognizes that the photo film cartridge 8 is present in the cartridge storage chamber 41 and opens the light-shielding lid 16 and sends out the photo film 14. The contact plate 65 includes a contact portion 65a,
A printed circuit board having a conduction pattern of 65b may be used.

Next, the operation of the camera described above will be described. First, when loading the photo film cartridge 8 into the camera 34, with the bottom surface of the camera 34 facing upward, the bottom cover 24 is opened by operating the lock member 52 shown in FIG. Hold it in the open position. The photo film cartridge 8 is inserted into the cartridge storage chamber 41 from the end surface side where the data plate can be visually recognized.

When the photographic film cartridge 8 is inserted into the cartridge storage chamber 41, as shown in FIG.
The end surface of the photographic film cartridge 8 on the leading side in the insertion direction contacts the claw portion 74 of the first lever 61. Further, when the photo film cartridge 8 is inserted into the cartridge storage chamber 41, the claw portion 74 is pushed by the photo film cartridge 8 and the first lever 61 resists the biasing force of the spring 66.
Slides downward along the elongated holes 60a and 60b in the figure.

As shown in FIG. 5A, the photographic film cartridge 8 is inserted to the extent that the rear end face in the insertion direction is inserted.
Is inserted into the cartridge storage chamber 41, the first lever 6
When the convex portion 61d of No. 1 abuts on the convex portion 63c of the lock member 63 and the photographic film cartridge 8 is further inserted, the lock member 63 is rotated in the clockwise direction in the figure against the bias of the spring 68, and the convex portion 61d. Moves to the lower side of the convex portion 63c and strikes, and the first lever 61 is locked. As a result, even if the insertion of the photo film cartridge 8 is stopped, the photo film cartridge 8 does not jump out of the cartridge storage chamber 41.

Further, in this state, as shown in FIG. 5B, since the pin 61a of the first lever 61 is only in contact with the pressing piece 71a of the switch plate 64, the switch plate 64 is in contact.
Is not slid and the cartridge detection circuit is not closed, so that the camera 34 does not detect the loading of the photographic film cartridge 8.

Next, the bottom lid 42 is closed to light-tightly shield the inside of the cartridge storage chamber 41. When the bottom lid 42 is closed as shown in FIG. 1A, the pressing protrusion 50 formed inside the bottom lid 42 presses the one end 62d of the second lever 62, and
The lever 62 slides downward along the long holes 60c and 60d of the substrate 60 against the bias of the spring 67. Slot 6
Since 0d is bent so as to approach the first lever 61 on the lower side, the other end 62e of the second lever 62 comes into contact with the shoulder portion 61e of the first lever 61 and subsequently presses it. Further, the photographic film cartridge 8 is provided with a pressing member 48.
The key shaft 56 is moved to the lower side of the cartridge storage chamber 41 by pressing, and the key shaft 56 is inserted into the spool 13 and the drive shaft is inserted into the light shielding lid 16.

The first lever 61 is slid further downward by pressing the second lever 62, and presses the pressing piece 71a of the switch plate 64 with the pin 61a, as shown in FIG. 1 (B). This causes the switch plate 64 to slide downward against the bias of the spring 69. When the bottom cover 42 is locked and completely closed, the contact piece 72a of the switch plate 64 contacts the contact portion 65a of the contact plate 65. As a result, the contact points 65a and 65b of the contact plate 65 are connected by the contact piece member 72 and the cartridge detection circuit is closed, so that the camera 34 recognizes that the photo film cartridge 8 has been loaded.

The camera 34 is a photographic film cartridge 8.
When the loading is detected, the light-blocking lid 16 is rotated to the open position by the drive shaft, and then the spool 13 is rotated by the rotation of the key shaft 56 to read the bar code of the data plate. Then, the photo film 14 is sent out from the inside of the cartridge body 10. The photo film 14 sent out is
The film is inserted into the film receiving port 54, passes between the aperture and the pressure plate to reach the film roll chamber, and the preparation for photographing is completed. When the photographing of the specified number of photographic films 14 stored in the cartridge main body 10 is completed, the photographic films 14 exposed by the key shaft 56 are transferred to the cartridge main body 10.
It is rewound inside, and subsequently, the light shielding lid 16 is rotated to the closed position by the drive shaft. After that, the exposed photo film 14
The photo film cartridge 8 in which is stored is taken out from the camera 34.

When the bottom cover 42 is opened by operating the lock member 52, the pressing of the second protrusion 62 by the pressing protrusion 50 is released, and the second lever 62 is slid upward by the bias of the spring 67. The first lever 61 in which the pressing of the second lever 62 is released has the spring 66 and the pressing piece 71a.
It is slid upward with a strong force by the urging force of the spring 69 via the pin 61a. Convex portion 61d of the first lever 61
Comes into contact with the convex portion 63c of the lock member 63, but the lock member 63 is rotated counterclockwise.

The first lever 6 slid by this strong force
The photographic film cartridge 8 is pushed up toward the opening 40 of the cartridge storage chamber 41 by the claw portion 74 of No. 1, and the spool 13 and the light shielding lid 16 are removed from the key shaft 56 and the drive shaft (not shown).

Next, the spring 69 having a short contraction stroke is
End contraction. As a result, the first lever 61 moves the spring 6
The photographic film cartridge 8 is slid upward by the weak force of only the urging force of 6, and the photographic film cartridge 8 is slowly lifted upward by the claw portion 74. When the sliding of the first lever 61 is completed, the photographic film cartridge 8 is partially projected from the cartridge storage chamber 41 as shown in FIG.

The contraction of the spring 69 causes the switch plate 64 to return to the initial position. As a result, the cartridge detection circuit is divided again, and the camera 34 enters a state in which the photographic film cartridge 8 is not inserted. In addition, as shown in FIG. 6A, the cartridge detection switch 59 is provided with the bottom cover 4 in a state in which the photographic film cartridge 8 is not loaded.
Even if 2 is closed, only the second lever 62 presses the pressing protrusion 50.
Is pressed by the first lever 61, as shown in FIG.
Since the switch plate 64 and the switch plate 64 are not slid at all, preparations for photographing are not made.

In the above embodiment, the camera in which a new plastic photographic film cartridge is loaded has been described as an example, but it can be used in a camera in which a 135-size photographic film cartridge is loaded in the axial direction.
Although the photographic film cartridge is inserted from the bottom side of the camera, the opening and the lid member may be provided on the upper surface of the camera so that the photographic film cartridge can be inserted axially from above the camera.

Further, the patrone detection circuit is turned on / off by the switch plate and the contact plate. For example, the switch plate is provided with a projection-like index projecting to the front surface of the camera or the like, and an image is taken depending on the position of the index. A person may be allowed to check the presence or absence of the photo film cartridge in the cartridge storage room.

[0048]

As described above, the camera of the present invention is provided with the patrone detection switch for detecting the presence / absence of the photo film cartridge in the patrone storage chamber in conjunction with the closing operation of the lid member. The state and the presence / absence of the photo film cartridge can be detected by one detection switch. In addition, the switch member does not come into direct contact with the cartridge, so that it does not become a load during rapid delivery.

Further, the patrone detection switch is slid by the first lever which is slid by inserting the photographic film patrone, the second lever which is slid by the closing operation of the bottom lid and the second lever. A switch plate slid by the first lever,
Since the switch plate is composed of the contact plate provided with the contacts connected by the metal contact piece, it can be implemented at a low cost and with a simple structure. Further, the claw portion of the first lever is arranged to be separated from the photo film patrone when the photo film patrone is loaded in the patrone storage chamber and the bottom lid is closed, so that an extra external force is applied to the photo film patrone. There is no.

[Brief description of drawings]

FIG. 1 is a main-portion cross-sectional view showing a state of a patrone detection switch when a patrone is loaded.

FIG. 2 is an external perspective view of the camera of the present invention viewed from the bottom side.

FIG. 3 is an exploded perspective view showing a configuration of a cartridge detection switch.

FIG. 4 is a cross-sectional view of essential parts showing a state of the cartridge detection switch during insertion of the cartridge.

FIG. 5 is a sectional view of an essential part showing a state of the cartridge detection switch at the end of insertion of the cartridge.

FIG. 6 is a cross-sectional view of essential parts showing a state of the cartridge detection switch when the bottom cover is closed without inserting the cartridge.

[Explanation of symbols]

8 Photo film Patrone 10 Patrone body 34 camera 40 openings 41 Patrone storage room 42 Bottom lid 59 Patrone detection switch 61 First lever 62 Second lever 64 switch board 65 contact plate

Continuation of front page (56) Reference JP-A-5-210163 (JP, A) JP-A-5-158142 (JP, A) JP-A-4-1624 (JP, A) JP-A-4-1621 (JP , A) JP-A-7-43812 (JP, A) JP-A-9-22059 (JP, A) JP-A-8-328139 (JP, A) JP-A-6-250280 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G03B 17/28 GAP

Claims (3)

(57) [Claims] 1. A photographic film cartridge in which an unexposed photographic film is accommodated is inserted into the cartridge chamber from the axial direction, and the cartridge chamber is opened and closed in a light-tight manner. In the camera provided with a lid member, a patrone detection switch for detecting the presence or absence of a photo film patrone in the patrone accommodating chamber is provided in the patrone accommodating chamber in association with a closing operation of the bottom lid. camera. 2. The patrone detection switch is slidable along the inserting direction of the photo film cartridge in the patrone storage chamber, and has one end provided with a claw portion abutting against the end face on the leading side in the inserting direction of the photo film patrone. A first lever, a second lever that pushes the first lever to further slide, and a switch plate that includes a metal contact piece that is slid by the pushing of the first lever that is slid by the second lever, 2. The camera according to claim 1, further comprising: a contact plate having a plurality of contacts which are brought into contact with the metal contact pieces by sliding the switch plate. 3. The camera according to claim 2, wherein the claw portion of the first lever is released from contact with the photographic film cartridge when it is slid by pressing the second lever.