JP3414555B2 - Camera film cartridge loading device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film cartridge loading device for a camera, and more particularly to a film cartridge loading device for a camera provided with a film exposure state identifying portion for identifying whether the film is used or not.

[0002]

2. Description of the Related Art In recent years, as a cartridge for a new standard film that has been proposed, a film cartridge (hereinafter referred to as a "leader portion" at the leading end, that is, a tongue portion, is housed in a cartridge in a light-shielded state together with a film strip (hereinafter , Described as a Velo storage type film cartridge). This film cartridge can be drop-in loaded into the camera, and after loading, when the film spool is rotated in the unwinding direction at the beginning of feeding, the film strip is sent out from the cassette body to the outside. It is a film cartridge that enables Further, after the photographing is finished, that is, after the use, the filmstrip and the reader section are wound in the cartridge body.

In the camera to which the above-mentioned tongue-holding type film cartridge is applied, there are various types of cameras having a film exposure state indicating device for identifying whether a conventionally loaded film cartridge is used or not, or a camera having an identifying portion. Proposed. For example, JP-A-3-168
The photographic camera disclosed in Japanese Laid-Open Patent Publication No. 731 cooperates with the above-mentioned film cartridge exposure state indicating device, and the film cartridge indicating that the film exposure state indicating device indicates that it has been used is loaded into the loading chamber. A photographic camera configured to prevent insertion.

Further, the one proposed for the film cartridge type camera disclosed in Japanese Patent Laid-Open No. 5-158142 is a film exposure state indicating device provided in the film cartridge, that is, an erroneous loading of a used cartridge by an exposure state identifying section. The present invention relates to a camera in which a device capable of preventing the above-mentioned problems and capable of automatically ejecting a cartridge is incorporated.

The film cartridge applied to this camera is the film cartridge 9 shown in FIGS.
As shown in the perspective views of A and 9B, a disk 10 having a notch 10a which is a film exposed state identifying portion is arranged at the upper end. The disc 10 is normally locked by a lock mechanism (not shown) so as not to rotate, but the lock is released when loaded in the cartridge chamber of the camera. Then, the above-mentioned disc 10 has a structure in which the film in the cartridge is in an unused state, that is, when it is in a state before exposure,
As shown in the perspective view of FIG. 10, the notch 10a of the exposed state identifying portion is set so as to come to the position P1 opposite to the film feeding portion 9a with respect to the rotation axis m.

Further, after the unused film cartridge 9A is loaded into the camera and after photographing, as shown in the perspective view of the used film cartridge 9B in FIG. Is set so as to come to a position P2 on the same side as the film feeding portion 9a. Therefore, by detecting the rotational position of the notch 10a, it is possible to identify whether the film cartridge is unused or used.

In the erroneous loading prevention / automatic ejection device,
When the film cartridge is inserted into the loading chamber, the locking member comes into contact with the disc having the notch which is the exposed state identifying portion. If the insertion cartridge has been used, that is, if it has been exposed, the exposed state identifying portion of the cartridge and the locking member mesh with each other to prevent the cartridge from being loaded. Further, if the insertion cartridge is an unused film cartridge, that is, if it is an unexposed film cartridge, the exposed state identifying portion avoids the locking member and enables loading. Then, when the photographing is completed, the film cartridge is automatically discharged by the discharging device.

Further, the one proposed in the photographic film erroneous loading preventing device for a camera disclosed in Japanese Patent Laid-Open No. 5-204034 has been used in a camera to which a delivery type film cartridge having an exposure state identifying portion is applied. The present invention relates to a camera having a used film cartridge erroneous loading preventing device which warns the user of the fact that the loading of a film cartridge is blocked because the film cartridge is the above-mentioned film cartridge.

[0009]

However, in the device for blocking the unused cartridge of the photographic camera proposed in the above-mentioned Japanese Laid-Open Patent Publication No. 3-168731, the sensing member for sensing the usage state of the film is normally loaded into the loading chamber. It is biased by a spring so that it projects, and by loading an unused film cartridge, the sensing member retracts out of the film cartridge entry track and abuts the film cartridge side wall, so that the film cartridge side wall is damaged. There was a problem that the amount of force for loading increases due to sticking or frictional force. Furthermore, when the film cartridge is to be taken out of the loading chamber after completion of photographing, a frictional force between the sensing member and the cartridge occurs, which makes it difficult to remove the film cartridge from the loading chamber.

Further, in the cartridge erroneous loading prevention / automatic ejection device of the film cartridge type camera proposed in the above-mentioned Japanese Patent Laid-Open No. 5-158142, what happens to the user when the loading of the used film cartridge is blocked? It cannot be confirmed whether the loading is blocked due to the cause. At this time, if the film cartridge is forcibly pushed in, the pressing force may act on the locking member and the film cartridge as they are, which may damage them.

Further, in the device for preventing erroneous loading of the filmed film cartridge which issues the alarm of the camera proposed in the above-mentioned Japanese Patent Application Laid-Open No. 5-204034, the user can remove the photographic film cartridge from the photographic camera even though the user has loaded the filmed film cartridge. If the film cartridge is further pushed in without noticing the alarm to be issued, damage to the blocking member or the film cartridge for preventing the cartridge from entering is inevitable. Further, the blocking member having high rigidity occupies a large space in the camera, which is disadvantageous for downsizing the camera.

The present invention has been made in order to solve the above-mentioned problems, and is a film cartridge of a camera in which a film cartridge having a film exposure state identifying portion for identifying used or unused is loaded. In the loading device, it is possible to easily and reliably detect the exposed state of the film when the film cartridge is loaded.
Another object of the present invention is to provide a small-sized and low-cost film cartridge loading device for a camera, which can easily take out the film cartridge without causing damage and can prevent double exposure of the film.

[0013]

SUMMARY OF THE INVENTION A first camera film cartridge loading device of the present invention is a camera film loaded with a film cartridge having a film exposure state identifying portion for identifying whether it is used or not. In the cartridge loading device, a cartridge chamber in which a film cartridge is loaded, a single detection member that protrudes into the cartridge chamber and is movable according to the loading of the film cartridge, and the camera body The guide member is provided so that the detection member can rotate about an axis provided on the detection member, and guides the shaft so that the shaft can move substantially straight.

In the film cartridge loading device of the camera, when the used film cartridge is loaded, the detection member engages with the film exposure state identification part, and the detection member is prevented from rotating and the guide is provided. The means moves linearly with the film cartridge by the means, and when the unused film cartridge is loaded, the detection member does not engage with the film exposure state identification portion, and the detection member rotates. The exposed state is identified by the moving state of the detection member.

The film cartridge loading device for a second camera of the present invention is a film cartridge loading device for a camera, which is equipped with a film cartridge having a film exposure state identifying portion for identifying whether it is used or not. The cartridge chamber is provided in the main body, and is located at the first position projecting into the cartridge chamber and the cartridge chamber. When the film cartridge is loaded, the cartridge chamber is moved to the second position or the third position. A single movable detection member and the camera body are provided so that the detection member is rotatable about an axis provided on the detection member and the axis is movable so as to guide the axis. The detection member position that emits different signals when the guide means and the detection member are at the second position and when the detection member is at the third position. And and a detecting means.

In the film cartridge loading device of the camera, when the used film cartridge is loaded, the detection member engages with the film exposure state identification portion, the detection member is prevented from rotating, and the guide is provided. Means for moving the film cartridge together with the film cartridge to move from the first position to the second position, and during the operation of loading an unused film cartridge, the detection member does not engage with the film exposure state identification portion, The detection member rotates to move from the first position to the third position. The exposure state is identified by the moving position of the detection member.

A film cartridge loading device for a third camera according to the present invention is the film cartridge loading device for the second camera, wherein the detecting member pushes when the cartridge chamber lid for opening and closing the cartridge chamber is opened. A moving means for moving the detection member from the second position or the third position to the first position so as to discharge the film cartridge in the cartridge chamber is provided.

In the film cartridge loading apparatus for the camera, when the opening operation of the cartridge chamber lid is performed, the detection member is moved from the second position or the third position to the first position so as to eject the film cartridge. Moving.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. The film cartridge applied to the camera incorporating the film cartridge loading device according to each aspect of the present invention is the above-mentioned tongue-holding type film cartridge, and the film cartridge described in the section of the prior art is used. The same as the film cartridges 9A and 9B having the cutouts 10a provided in the drivable disk 10 which is the exposure state identification portion shown in FIGS. 10 and 11 applied to the film cartridge type camera disclosed in Japanese Patent No. 158142. It is assumed that

The film cartridge loading device for a camera according to the first embodiment of the present invention identifies the unused or used film exposure state of the loaded film cartridge, and further opens the cartridge chamber lid. The film cartridge is ejected in association with the operation, and FIG. 1 is a perspective view showing the appearance of a camera incorporating the film cartridge loading device and a film cartridge loaded in the camera.

As shown in FIG. 1, the camera has a cartridge chamber 2 on the right side inside the camera body 1 into which the film cartridges 9A and 9B shown in FIGS.

Further, the cartridge chamber 2 has a film cartridge insertion opening 2a on the lower surface side of the camera body 1. This insertion port 2a is provided with a film cartridge 9A,
The film cartridge 9A, 9B has a shape corresponding to the outer shape of the film 9B.
Can be inserted in the D direction with the orientation shown in FIG. The cartridge chamber 2 is provided in the camera body 1
It is opened and closed by the cartridge chamber lid 3 which is rotatably supported. In addition, when opening, the knob 4 is operated.

The mechanical part of the film cartridge loading device is arranged in the inside 5 on the bottom side in the loading direction (D direction) of the cartridge chamber 2. The structure of the mechanical part is a perspective view of FIG. Will be described. First, a single detection member that detects the film exposure state,
Detection / ejection lever 11 for ejecting the cartridge
Has a shaft portion 11b, 11c which is integrated with a claw portion 11a capable of pressing the cartridge in the discharging direction.
b and 11c are inserted in long grooves 15a and 15b which are guide means formed in the camera body 1a along the y direction.

Therefore, the detection / discharge lever 11 is
Is movable in the y direction along the long grooves 15a and 15b which are vertical directions parallel to the D direction which is the cartridge insertion direction of FIG. 2, and the shaft portions 11b and 1 which are orthogonal to the y direction.
It is also rotatable about the central axis x of 1c.

The detection / ejection lever 11 is a moving means for ejecting the cartridge, and is a counterclockwise direction in which the claw portion 11a is moved in the anti-D direction by the compression coil spring 13 as the urging means. Is always energized.

In the cartridge lever 11, when the cartridge is not loaded, the claw portion 11a is in the released state, and the claw portion 11a is opened from the bottom opening 12 provided in the cartridge chamber 2 of the camera body 1. Two
It is in a protruding state. And the lever 11 itself is
It is in contact with the stopper 17 on the camera body 1a,
Counterclockwise rotation is restricted and only clockwise rotation is allowed.

The leaf switch 18 as detecting / discharging lever position detecting means for detecting the moving position of the detecting / discharging lever 11 has the above-mentioned detecting / discharging lever 1 of the camera body 1.
It is attached at a position above the one shaft. This switch 1
8 is maintained in the off state when the detection / discharge lever 11 is in contact with the stopper portion 17. Then, when the used cartridge 9B is loaded and the detection / ejection lever 11 moves in the y direction, the leaf switch 18 moves to the y direction.
It is pressed and deformed in the direction to turn on. The output signal of the leaf switch 18 is taken into a control unit 19 that performs various controls of the camera, and the usage state of the film cartridge, that is, the exposure state is identified.

Next, the procedure from the insertion to the ejection of the film cartridge in the film cartridge loading device of the camera of the first embodiment configured as described above will be described.
This will be described with reference to the action state diagrams of FIGS. First,
The used film cartridge 9 shown in FIG.
Explaining from the case of loading B, the film cartridge 9B is inserted into the film cartridge insertion opening 2a in the direction D, and the disc 10 of the film cartridge 9B is exposed as shown in the sectional view of the operating state during the insertion of FIG. The claw portion 11a of the detection / discharge lever 11 enters the notch 10a that is the state identification portion, and the claw portion 11a and the bottom portion 10b of the notch 10a come into contact with each other.

In this state, the detection / ejection lever 11 is still in contact with the stopper portion 17 of the camera body,
I haven't moved. The position of the detection / discharge lever 11 in this state is referred to as a first position Q1.

Then, when the cartridge chamber lid 3 is closed,
The used film cartridge 9B is further inserted into the bottom 2b of the cartridge chamber 2. As shown in the sectional view of the fully inserted state of FIG. 4, the detection / ejection lever 11 is
It rotates slightly and its claw 11a is cut out to form the wall 1 inside.
0c is contacted and rotation is restricted. Also, the long groove 15a,
Since the left and right sides are restricted by 15b, the detection / discharge lever 11 is lifted in the y direction against the urging force of the compression coil spring 13 along the long grooves 15a and 15b with almost no rotation. The moving position of the detection / ejection lever 11 in this state is referred to as a second position Q2. At this time, the contact portion of the leaf switch 18 is pressed by the detection / ejection lever 11 to be turned on.

An ON signal of the switch 18 is supplied to the control unit 19
Is taken in and the camera recognizes that the used film cartridge 9B has been loaded, and therefore the camera does not feed the film from the film cartridge 9B and prohibits transfer to shooting.

Therefore, when the knob 4 is operated to open the cartridge chamber lid 3, the detecting / discharging lever 11 is moved to the second position Q shown in FIG. 4 by the urging force of the compression coil spring 13.
2 to the first position Q1 shown in FIG. 3 in the reverse D direction, and the film cartridge 9B is also reverse D by the claw 11a.
It is pushed out in the direction and discharged.

On the other hand, when the unused film cartridge 9A shown in FIG. 10 is loaded, the detection / discharge lever is inserted by inserting the cartridge 9A as shown in the sectional view in the completely inserted state of FIG. The notch 11 is provided at a portion where the claw portion 11a of the cartridge 9A abuts.
Since a is not located, the claw portion 11a slides on the upper surface of the disk 10 of the film cartridge 9 and rotates about the central axis x. When the film cartridge 9 is inserted to the bottom of the cartridge chamber, the claw portion 11a moves to the film cartridge exterior body surface portion 9b at a position outside the rotatable disc 10 of the film cartridge 9 and stops. The position of the detection / ejection lever 11 in this posture is defined as a third position Q3.

The detecting / discharging lever 11 which has moved to the third position Q3 has a y-axis only when the shaft portion 11b thereof is rotated.
Since it does not move in the direction, the leaf switch 18 is not pressed and turned on. Therefore, the control unit 19 determines that the loaded film cartridge 9A is an unused one, and the camera side sends out the film so that the film can be photographed.

After the photographing is completed, operate the knob 4 to
When the cartridge chamber lid 3 is opened, the supporting force of the cartridge chamber lid 3 is lost, so the detection / ejection lever 11 is rotated counterclockwise by the biasing force of the coil spring 13 to move to the first position Q1 and the film cartridge The cartridge 9 is ejected so that its tip portion projects from the cartridge chamber 2.

As described above, according to the film cartridge loading device for the camera of the first embodiment, the exposed state of the film, that is, the usage state, can be detected easily and reliably by the leaf switch 18 when the film cartridge is loaded. can do. In addition, since the loaded film cartridge can be inserted into the cartridge chamber 2 without being blocked even if it has been used, the film cartridge erroneous loading prevention device disclosed in the above-mentioned JP-A-5-204034 can be used. The double-exposure prevention of the film is surely performed without damaging the blocking member and without damaging the cartridge.

Further, in the apparatus of this embodiment, the film cartridge is ejected by the urging force of the coil spring 13 in conjunction with the cartridge chamber lid 3, so that the film cartridge can be taken out easily. Also, the number of components of the loading device is small, for example, 1
The two detection / discharge levers 11 detect the exposed state and discharge, and use the levers 11 for guiding the long grooves 15a, 15
Since it is directly guided by b, it is possible to configure a film cartridge loading device for a small-sized and low-cost camera. The film cartridge erroneous loading prevention device disclosed in Japanese Patent Laid-Open No. 5-204034 described above requires two parts, a detection lever and an eject plate.

Next, a film cartridge loading device for a camera according to the second embodiment of the present invention will be described. Since the same camera main body as that shown in FIG. 1 is applied to the second embodiment, the reference numerals of the components around the cartridge chamber are the same as those of FIG. Furthermore, the film cartridges 9A and 9B shown in FIGS. 10 and 11 are also applied to the applied film cartridges.
Apply. The mechanical portion of the film cartridge loading apparatus of the second mode is arranged in the inside 5 on the bottom side in the D direction which is the cartridge loading direction of the cartridge chamber 2 as in the case of the first mode.

First, the structure will be described with reference to the perspective view of FIG. 6 and the sectional views of the operating state of FIGS. 7, 8 and 9. A single detection member for detecting the exposed state of the film, and further a detection / discharge lever 2 for discharging the cartridge.
Reference numeral 1 denotes a claw portion 21a capable of pressing the cartridge in the discharging direction.
And shaft portions 21b and 21c that are integral with
b and 21c are provided on the body of the camera and are inserted into long grooves 25a and 25b which are guide means formed along the β direction. Therefore, the detection / ejection lever 21 has a long groove 25 in the vertical direction parallel to the D direction of the cartridge insertion direction.
It is movable in the β direction of a and 25b and rotatable with respect to the central axis α of the shaft portions 21b and 21c.

Further, the detection / discharge lever 21 has a tension coil spring 23 as an urging means at an intermediate position of its shaft portion.
Is suspended and is always urged in the downward direction of FIG. 6, that is, the reverse D direction. Therefore, when the cartridge is not loaded, the detection / ejection lever 21 comes into contact with the stopper portion 27 of the elongated hole 22 on the camera body side provided in the wall portion of the cartridge chamber to move downward in FIG. It is regulated. Then, in the upward direction along the β direction in FIG.
That is, movement and rotation in the D direction are allowed.

Further, the claw portion 21 of the detection discharge lever 21
a projects to the cartridge chamber 2 side through the elongated hole 22. A leaf switch 28 as a detecting / discharging lever position detecting means for detecting the moving position of the detecting / discharging lever 21 is attached to the camera body, and is moved by the rectilinear movement of the detecting / discharging lever 21 in the β direction. , Are arranged so as to be turned on.

Next, the procedure from the insertion to the ejection of the film cartridge in the film cartridge loading device of the camera of the second embodiment configured as described above will be described.
This will be described with reference to action state diagrams of FIGS. 7, 8 and 9. First,
The used film cartridge 9 shown in FIG.
The case of loading B will be described. When the film cartridge 9B is inserted in the direction D from the film cartridge insertion opening 2a of FIG. 1, the circle of the film cartridge 9B is shown in the sectional view of FIG. The claw portion 21a of the detection / discharge lever 21 enters into the notch 10a which is the exposed state identifying portion of the plate 10, and the claw portion 21a and the notch 10a.
The bottom part 10b of a contacts. The detection / ejection lever 21 in this state is still in contact with the stopper portion 27 of the camera body, and has not been rotated or moved. The position of the detection / discharge lever 21 in this state is referred to as a first position Q11.

When the used film cartridge 9B is further inserted to the bottom portion 2b of the cartridge chamber 2 by closing the cartridge chamber lid 3, as shown in the sectional view of FIG. Lever 2
1 rotates slightly, and its claw portion 21a comes into contact with the wall 10c in the cutout, and the rotation thereof is restricted. Further, since the left and right are restricted by the long grooves 25a and 25b, the long grooves 25a and 25 are resisted against the biasing force of the tension coil spring 23.
It can be lifted in the y direction parallel to the D direction with almost no rotation along b. The moving position of the detection / discharge lever 21 in this state is referred to as a second position Q12. At this time, the contact portion of the leaf switch 28 is pressed by the detection / ejection lever 21 to be turned on.

The ON signal of the switch 28 is sent to the control unit 19
Since it is recognized that the used film cartridge 9B has been loaded, the camera side does not feed the film from the film cartridge 9B and prohibits the shift to shooting. Therefore, when the knob 4 is operated to open the cartridge chamber lid 3, the tension coil spring 23
The urging force moves the detection / ejection lever 21 in the reverse D direction from the second position Q12 shown in FIG. 8 to the first position Q11 shown in FIG. Film cartridge 9B also has claws 2
It is pushed out in the reverse D direction by 1a and is discharged.

Next, the case where the unused film cartridge 9A shown in FIG. 10 is loaded will be described. When the film cartridge 9A is inserted, the detecting / discharging lever 21 moves in the β direction by the claw portion 21a sliding on the upper surface of the disk 10 other than the cutout portion 10a of the film cartridge 9. Since the slope 26 is provided on the camera body side, the detecting / discharging lever 21 is moved around the central axis α of the shaft portions 21b and 21c in FIG. 9 by the biasing force of the tension coil spring 23 and the pressing force received by the claw 21a. Thus, the convex portion 21d of the lever 21 moves in the β direction while sliding on the slope 26 while rotating counterclockwise (see FIG. 9).

When the film cartridge 9A arrives at the bottom 2b of the cartridge chamber 2, the detection / ejection lever 21
As shown in the sectional view of the operating state of FIG.
Leaves the disk 10 portion of the film cartridge 9B,
The outer surface of the film cartridge is abutted on the outer surface 9b of the film cartridge and stopped. The position of the film cartridge 21 in this state is referred to as a third position Q13.

As described above, the detection / discharge lever 21 is shown in FIG.
Since it moves in the β direction while rotating counterclockwise above,
The leaf switch 18 does not turn on. Therefore, the camera side determines that an unused film cartridge 9A has been loaded, sends out the film,
Set the camera ready for shooting.

After the photographing is completed, when the knob 4 is operated to open the cartridge chamber lid 3, the cartridge support force by the cartridge chamber lid 3 is lost, so that the detection / discharge lever 21 is always provided with the tension coil spring 23. Due to the force, the film cartridge 9B, which has moved to the original position, that is, the first position Q11 and is in the used state, is ejected to the ejection position protruding from the cartridge chamber 2.

As described above, according to the film cartridge loading device for the camera of the second embodiment, the film exposure state, that is, the use state is set by the leaf switch 28 as in the case of the first embodiment device. simply,
Moreover, the film can be reliably detected, the cartridge is not subjected to excessive force, and therefore the film is not double-exposed and the cartridge is reliably ejected. Moreover, the number of components is also small.

In particular, in the case of the device of the second embodiment, when the leaf switch 28 as the detecting member position detecting means is not turned on, the detecting / discharging lever 21 has the long groove 25a,
At the same time as being guided by 25b, the tension coil spring 23
The tilting force of the camera body 26
The structure is such that the switch 28 is slid above and the switch 28 is not pressed reliably, so that the switch 28 can be operated more reliably.

The film cartridge applied to the above-described film cartridge loading apparatus of the present invention is a tongue-holding type film cartridge, but the present invention is not limited to this, and the tongue protrudes to the outside of the cartridge before the camera is loaded. Even if it is a 35 mm film cartridge or the like, as long as it has a film exposure state identification part that utilizes a change in the position of the identification member, the gist of the present invention is applied to a camera to which the film cartridge is applied. Is possible.

(Supplementary Note) Based on the above-described embodiments, a camera having the following configuration can be proposed. That is, (1) In a film cartridge loading device of a camera, which is equipped with a film cartridge having a film exposure state identifying portion for identifying whether the film cartridge is used or not, the cartridge provided in the camera body and loaded with the film cartridge. Chamber, a cartridge chamber lid capable of opening and closing the cartridge chamber, and a first position projecting into the cartridge chamber, and following the loading of the film cartridge to the second position or the third position. A single movable detection / ejection lever and the detection / ejection lever in the second position so as to push the detection / ejection lever to eject the film cartridge in the cartridge chamber when the cartridge chamber lid is opened. Alternatively, the moving means for moving from the third position to the first position and the camera body are provided. Is, to be rotatable around an axis the detection and ejection lever is provided in the detection and ejection lever, and a guide means this axis for guiding the shaft movably, the detection and
The discharge lever is located at the second position and when the discharge lever is located at the third position. The detection / ejection lever is engaged with the film exposure state identification part, the rotation of the detection / ejection lever is restrained, and the guide means moves the film cartridge together with the film cartridge to move the film from the first position. When the unused film cartridge is loaded, the detection / ejection lever does not engage with the film exposure state identification part, and the detection / ejection lever rotates to move to the first position. A film cartridge loading device for a camera, characterized in that the film cartridge loading device moves from the position to the third position.

(2) In a film cartridge loading device of a camera for loading a film cartridge having a film exposure state identifying portion for identifying used or unused, the film cartridge is provided in the camera body and loaded with the film cartridge. A cartridge chamber, and a single detection lever that is in a first position protruding into the cartridge chamber and is movable to a second position or a third position following the loading of the film cartridge, The detection lever is provided in the camera body, the detection lever is rotatable about an axis provided in the detection lever, and the guide means guides the shaft so that the detection lever is movable. And a detection lever position detecting means that emits a different signal when it is in the third position and in the third position. Camera film cartridge loading device.

(3) In a film cartridge loading device of a camera for loading a film cartridge provided with a film exposure state identifying portion for identifying whether the film cartridge is used or not, the film cartridge is provided in the camera body and the film cartridge is loaded. A cartridge chamber, a cartridge chamber lid capable of opening and closing the cartridge chamber, and a first position projecting into the cartridge chamber, and following the loading of the film cartridge, the second position or the third position A single detection / ejection lever that can be moved to the second position and the detection / ejection lever is pushed to the second position so as to eject the film cartridge in the cartridge chamber when the cartridge chamber lid is opened. Alternatively, the moving means for moving from the third position to the first position, and the moving means installed on the camera body. The detection / ejection lever is rotatable about an axis provided on the detection / ejection lever.
A film cartridge loading device for a camera, further comprising guide means for movably guiding the shaft.

(4) In the above Supplementary Note (1) or Supplementary Note (3), the detection / ejection lever contacts the film cartridge and moves the detection / ejection lever itself when the film cartridge is loaded. A film cartridge loading device for a camera, which has a claw portion for pushing the film cartridge to be ejected when the opening of the cartridge chamber lid is opened.

(5) In the above Supplementary Note (1) or Supplementary Note (3), the moving means includes an urging member that directly urges the detection / ejection lever in the direction of ejecting the film cartridge. A film cartridge loading device for a camera, which is provided.

[0057]

According to the film cartridge loading device for a camera of claim 1 or claim 2 of the present invention,
In a film cartridge loading device of a camera in which a film cartridge equipped with a film exposure status identifying portion for distinguishing whether it is used or not is used, the exposure status of the film can be detected easily and reliably when the film cartridge is loaded. Also, it is possible to take out the film cartridge easily, without the risk of scratching the film cartridge, and to prevent double exposure of the film. Moreover, it is small, has a small number of constituent members, and provides a low-cost device. can do.

According to the film cartridge loading apparatus for a camera of the third aspect of the present invention, the film cartridge of the camera loaded with the film cartridge provided with the film exposure state identifying portion for identifying the used state or the unused state. In the loading device, the cartridge can be surely ejected by the moving means in association with the opening operation of the cartridge chamber lid.

[Brief description of drawings]

FIG. 1 is a perspective view of an external appearance of a camera having a film cartridge loading device according to a first embodiment of the present invention and a film cartridge loaded therein.

FIG. 2 is a perspective view of a mechanical portion of the film cartridge loading device showing the first embodiment.

FIG. 3 is a sectional view of the film cartridge loading apparatus showing the first embodiment in an operational state, showing a state in which a used film cartridge is being inserted.

FIG. 4 is a sectional view of the film cartridge loading device showing the first embodiment in an operational state, showing a loading completed state of a used film cartridge.

FIG. 5 is a sectional view of the film cartridge loading device showing the first embodiment in an operational state, showing a loading completed state of an unused film cartridge.

FIG. 6 is a perspective view of a mechanism portion of a film cartridge loading device showing a second embodiment of the present invention.

FIG. 7 is a sectional view of the film cartridge loading device showing the second embodiment in an operational state, showing a state in which a used film cartridge is being inserted.

FIG. 8 is a sectional view of the film cartridge loading apparatus showing the second embodiment in an operational state, showing a loading completed state of a used film cartridge.

FIG. 9 is a sectional view of the film cartridge loading device showing the second embodiment in an operational state, showing a loading completed state of an unused film cartridge.

FIG. 10 is a perspective view of a film cartridge having a film exposure state identification section applied to the conventional camera or the apparatus of each of the embodiments of the present invention, which is in an unused state.

FIG. 11 is a perspective view of the film cartridge of FIG. 10 in a used state.

[Explanation of symbols]

2 ...... Cartridge chamber 3 ...... Cartridge chamber lid 9A, 9B ...... Film cartridge 10a ...... Cutout portion (film exposure state identification portion) 11, 21 ...... Detection / discharge lever (single detection member) 13 ...... Compression coil spring (moving means) 15a, 15b, 25a, 25b ... long groove (guide means) 18, 28 ... leaf switch (detection member position detecting means) 23 ... tension coil spring (moving means) Q1, Q11 ... first Position Q2, Q12 ... second position Q3, Q13 ... third position

Continued front page       (56) References JP-A-3-168731 (JP, A)                 JP-A-7-175123 (JP, A)                 JP 4-204839 (JP, A)                 JP-A-4-76526 (JP, A)                 JP-A-5-204034 (JP, A)                 JP-A-5-158142 (JP, A)                 JP-A-5-107633 (JP, A)                 JP-A-8-286267 (JP, A)

Claims (3)

(57) [Claims] 1. A film cartridge loading apparatus for a camera, which is equipped with a film cartridge having a film exposure state identifying portion for identifying whether the film cartridge is used or not, and which is provided in the camera body and into which the film cartridge is loaded. Chamber, a single detection member that protrudes into the cartridge chamber and is movable in response to the loading of the film cartridge, and is provided in the camera body, and the detection member is rotated around an axis provided in the detection member. And a guide means for guiding the shaft so that the shaft can move substantially linearly, and the detection member engages with the film exposure state identification portion when the used film cartridge is loaded. Then, the detection member is restrained from rotating and is moved straight along with the film cartridge by the guide means. Dynamic and, also, when not in use the film cartridge loading operation, the sensing member is not engaged with the film exposure status identifying unit, the detecting member is a camera of the film cartridge loading device which is characterized in that the rotation. 2. A film cartridge loading device for a camera, which is equipped with a film cartridge having a film exposure state identifying portion for identifying whether the film cartridge is used or not, wherein the cartridge is provided in the camera body and the film cartridge is loaded. A chamber, a single detecting member that is in a first position protruding into the cartridge chamber, and is movable to a second position or a third position following the loading of the film cartridge, Guide means provided on the camera body for guiding the detection member such that the detection member is rotatable about an axis provided on the detection member and is movable, and the detection member is the second member. When in the position, and the third above
And a detection member position detection means that emits a signal different from that at the time of being in the position of, and the detection member engages with the film exposure state identification portion during the loading operation of the used film cartridge to detect the detection. The member is restrained from rotating and is moved together with the film cartridge by the guide means to move from the first position to the second position. Further, when the unused film cartridge is loaded, the detection member is A film cartridge loading device for a camera, characterized in that the detection member rotates and moves from the first position to the third position without engaging with the film exposure state identification part. 3. When the opening of the cartridge chamber lid for opening and closing the cartridge chamber is opened, the detecting member is pushed from the second position or the third position so as to push the detecting member to discharge the film cartridge in the cartridge chamber. 3. The film cartridge loading device for a camera according to claim 2, further comprising moving means for moving the film cartridge to the position 1.