JPH09281587A - Film loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film loading device constituted so that a positioning shaft can be surely and smoothly inserted in a loaded cartridge as for a camera using the film housing type cartridge. SOLUTION: The positioning shaft 37 having a freely slidably supported inclined part 37a is fitted to a pressing member 38 fixed to a cartridge chamber cover 8. When the cartridge 3 is loaded in a cartridge chamber and the cover 8 is turned in a closing direction, the shaft 3T is inserted in the positioning hole 3f of the cartridge 3 while the inclined part 37a is smoothly guided and they are perfectly engaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film loading device, and more particularly to a film loading device for loading and unloading a film cartridge in a camera using a film cartridge containing a film.

[0002]

2. Description of the Related Art Conventionally, Japanese Unexamined Patent Publication No. 7-168318 has been proposed as being applied to a camera that uses a film cartridge of a type in which a film is stored before being loaded into the camera and the film is delivered after loading. The camera cartridge loading device disclosed in the publication is a proposal regarding a film loading device for loading and unloading a film cartridge.

In this film loading apparatus, the cartridge supporting member for supporting the film cartridge shaft between the fork and the fork is provided with a biasing means for axially biasing the cartridge, and the cartridge shaft end is chamfered.
A hemisphere of the cartridge support member on the chamfer, or
The cartridge is supported by abutting the conical support portions and applying the above-mentioned biasing force.

The film loading device in the camera disclosed in Japanese Patent Laid-Open No. 4-234744 has a rotatable cartridge support member for supporting the cartridge at a position facing the fork of the cartridge chamber with the cartridge interposed therebetween. The mounted and loaded cartridge is supported by the fork and the cartridge support member. Therefore, the tilt of the cartridge is prevented when the film is fed, and the film feeding speed can be stabilized. The cartridge supporting member is attached to a cartridge chamber lid that can be opened and closed.

[0005]

However, in the cartridge loading device of the camera disclosed in Japanese Patent Laid-Open No. 7-168318, the cartridge is supported by the chamfered portion at the end of the cartridge shaft and is completely fitted. However, if a radial force acts on the cartridge, the cartridge may be displaced.

Further, in the film loading device for a camera disclosed in Japanese Patent Laid-Open No. 4-234744, the tip end portion of the cartridge support member on the cartridge engaging side has an end shape having a predetermined uniform inclination angle. Therefore, there is a case where the slanting portion of the end portion is narrow and it is difficult to engage when there is a positional deviation between the cartridge and the cartridge supporting member.

The present invention has been made to solve the above-mentioned problems, and in a camera using a film cartridge containing a film, a positioning shaft for positioning the loaded cartridge is surely provided.
Moreover, it is an object of the present invention to provide a film loading device that can be smoothly inserted and at the same time can surely open and close the cartridge chamber lid.

[0008]

According to a first aspect of the present invention, there is provided a film loading apparatus, which is a camera using a film cartridge containing a film, and a film cartridge chamber for loading the film cartridge. A position for closing the film cartridge chamber,
A cartridge chamber lid that is rotatable between the opening position and
A film loading apparatus having a positioning shaft that is attached to the lid so as to be movable in the axial direction, engages with the film cartridge in a state where the cartridge chamber lid is closed, and positions the film cartridge. A slope is provided at the tip. In the film loading apparatus according to the first aspect, when the cartridge chamber lid is closed, the positioning shaft is inserted into the positioning hole of the cartridge from the inclined surface portion thereof, and is in a completely engaged state.

A film loading apparatus according to a second aspect of the present invention is the film loading apparatus according to the first aspect, wherein the inclined surface portion has a center on a cross section orthogonal to a rotation center axis of the cartridge chamber lid. The shaft is formed as a conical surface located closer to the center of rotation of the cartridge chamber lid than the center of the positioning shaft. In the film loading apparatus according to the second aspect, when the cartridge chamber lid is closed, the positioning shaft is inserted into the positioning hole of the cartridge from the outer side portion of the conical surface thereof, and is in a completely engaged state.

A film loading apparatus according to a third aspect of the present invention is the film loading apparatus according to the first aspect, wherein the slope portion has a vertex at the apex on a cross section orthogonal to the central axis of rotation of the lid. It is formed by an inclined surface closer to the center of rotation of the lid than the center of. In the film loading apparatus according to the third aspect, when the cartridge chamber lid is closed, the positioning shaft is inserted into the positioning hole of the cartridge from the inclined surface portion thereof, and is in a completely engaged state.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a camera in which a film loading device according to an embodiment of the present invention is incorporated and a film cartridge 3 to be loaded, as seen obliquely from the bottom side of the camera, and a cartridge chamber lid 8 is opened. It shows the state. The film cartridge 3 used in the present camera is applied to a so-called advanced photo system, which is a film cartridge in which all the films are stored in the cartridge before the camera is loaded and the film is sent out of the cartridge after the loading. It is a type of film cartridge.

As shown in FIG. 1, a cartridge chamber cover 8 is attached to the opening of the cartridge chamber 4a on the bottom side of the outer casing 1 of the camera so as to be openable and closable around a hinge shaft 10 as a rotation center. The cartridge chamber 4a provided in the camera body 4 has an opening through which the cartridge 3 can be loaded from its axial direction, and is covered in a light-tight state by closing the cartridge chamber lid 8. The lens barrel 2 is attached to the front side of the camera, and the finder 5 is provided on the upper side of the back side of the camera. On the side of the camera, the cartridge lid opening knob 6 guided by the cover member 12,
It is slidably mounted.

The structure of the film loading device incorporated in the peripheral portion of the cartridge chamber 4a will be described in detail with reference to FIGS. It should be noted that FIGS.
FIG. 6 is a perspective view of a cartridge lid opening knob 6 and a cartridge chamber mechanism section operated by the cartridge lid opening knob 6 in respective operating states as seen from the side of the camera. 2 shows a state in which the cartridge chamber lid is closed, FIG. 3 shows a state immediately after the cartridge lid 8 is opened by operating the knob 6, and FIG. 4 shows a state in which the knob 6 is locked. Shows. Incidentally, FIGS.
4 is different from FIG. 1 in that the bottom surface side of the camera is shown downward.

FIGS. 5, 6 and 7 are perspective views of the cartridge chamber as seen from the top side of the camera. FIG. 5 shows the state when the cartridge chamber lid 8 is closed, and FIG. 6 shows the state when the lid 8 is opened. FIG. 7 shows an arrangement of photo reflectors for reading a data disc. FIG. 8 is a cross-sectional view taken along the line AA ′ of FIG. 5 and shows a loaded state of the cartridge.
9 and 10 are views showing the state of the light shielding lid opening / closing lever in FIGS. 5 and 6, respectively.

11 and 12 are views of the cartridge chamber viewed from the bottom side of the camera, showing the state in which the cartridge chamber lid 8 is opened and the state in which the cartridge chamber lid 8 is closed, respectively. FIG.
FIG. 12 is a sectional view taken along line CC ′ of FIG. 11. 14 and 15 show
FIG. 6 is a cross-sectional view showing the vicinity of the rotation center of the cartridge chamber lid 8 and a view seen from the bottom side of the camera. 16 is a sectional view taken along line BB ′ of FIG. 17, 18 and 19 are perspective views of the vicinity of the eject rod 26 in the cartridge chamber as seen from the rear side of the camera. In particular, FIG. 18 shows the state of the eject rod 26 when the cartridge chamber lid 8 is closed. 19 shows a state in which the cartridge 3 is inside the cartridge chamber 4a when the cartridge chamber lid 8 is open. In addition, in each of the above-mentioned drawings, portions not related to the description are omitted in order to prevent the drawings from being complicated. Further, in the figure, the portion indicated by + point O indicates the center of rotation or rotation.

First, the structure around the cartridge chamber lid opening knob 6 will be described. As shown in FIGS. 1, 2 and 8, the cartridge chamber lid opening knob 6 is slidably attached to the camera exterior body 1. The cover member 12 covers the area other than the range in which the knob portion 6a of the knob moves. A lock button 7 is attached to the cartridge chamber lid opening knob 6 at an operable position so as to be movable in the axial direction thereof, and slides integrally with the cartridge chamber lid opening knob 6.

The lock button 7 has an arm portion 7a, and when the lock button 7 is not pushed in, the cover member 12 is provided.
It abuts against the stopper portion 12a of the above and prevents the cartridge chamber lid opening knob 6 from sliding. A button 21 is attached to the camera exterior body 1 on the side opposite to the operation portion of the lock button 7 so as to be movable in the axial direction.

The other shaft end of the button 21 has a switch (A) 20 (hereinafter,
The switch is in contact with a contact piece of SW), and when the lock button 7 is pushed in, the button 21 moves in the axial direction to turn on the SW (A) 20. The button 21 is urged by a spring 22 in a direction to push out the lock button 7, and normally, the lock button 7 is held in a protruding position and the SW (A) 20 is in an off state.

The cartridge chamber lid opening knob 6 is moved by the spring 13 supported by the spring retainer 1a of the camera exterior body 1.
It is biased and is held in the cartridge chamber lid closed position by the biasing force of this spring.

The key lever 16 is rotatably supported by the camera exterior body 1, and the key lever 16 has a hook portion 16a. The hook portion 16a engages with the hook portion 8a of the cartridge chamber lid 8 to hold the cartridge chamber lid 8 in the closed position. Also, the key lever 16
Has protrusions 16b and 16c, which rotate by engaging with the protrusions 6d, 6e, and 6f of the cartridge chamber lid opening knob 6, respectively.

The lock lever 14 is attached to the camera body 1.
It is rotatably supported, and is urged by a spring 15 to rotate counterclockwise. Cartridge chamber lid 8
However, in the closed state, the lock lever 14 is pushed by the lock releasing portion 8b, and the lock lever 14 is stopped at the lock releasing position. When the cartridge chamber lid 8 is in the open state, the lock lever 14 is rotated by the spring 15 and engages with the stopper portion 16d of the key lever 16 to hold the key lever 16 in the cartridge chamber lid open position.

The gear (A) 17 is a two-stage gear having a large-diameter gear portion 17a and a small-diameter gear portion 17b rotatably supported by the camera body 4. The large-diameter gear portion 17a meshes with a rack portion 6c provided on the cartridge chamber lid opening knob 6. The gear (B) 18 is rotatably supported by the camera body 4, and a gear portion 18b provided on the gear (B) is provided.
Engages with the small-diameter gear portion 17b of the gear (A) 17. Further, the gear (B) 18 has an engaging portion 18a on the opposite side of the gear portion 18b, and the connecting portion 18a is engaged with the drive lever 19.

Next, the opening / closing mechanism of the light shielding lid of the cartridge 3 will be described with reference to FIGS. 5, 8 and 9. The drive lever 19 is pivotally supported on the upper side (FIG. 8) of the cartridge chamber of the camera body 4. One end of the drive lever 19 is engaged with the engagement portion 18a of the gear (B) 18, and the drive lever 19 is also rotated by the rotation of the gear (B) 18. Further, projections 19b and 19c are provided at the other end of the drive lever 19.

Further, the light-blocking lid opening / closing lever 25 is provided on the upper portion of the cartridge chamber of the camera body 4 and the camera body 4 and the main plate 23.
It is rotatably supported by and. Stopper 2
5a, stopper 4b and stopper 4 of the camera body 4
The rotation position is restricted by c.

The protrusion 19b of the drive lever 19 is engaged with a cam portion 25b provided on the light-shielding lid opening / closing lever 25, and the rotation of the drive lever 19 causes the light-shielding lid opening / closing lever 25 to rotate. Further, the protrusion 19c of the drive lever 19 is SW (B) fixed to the base plate 23.
The SW (B) 24 is in contact with the contact piece 24 and turns on and off the SW (B) 24 in accordance with the rotation of the drive lever 19.

The light-blocking lid opening / closing lever 25 is shown in FIG.
Has a cartridge engaging portion 25c as shown in
This engaging portion 25c is the light-shielding lid 3 of the film cartridge 3.
The light shielding lid 3a of the film cartridge 3 is opened and closed by engaging with a and rotating the light shielding lid opening / closing lever 25.

Next, the film loading mechanism will be described with reference to FIGS. 5, 7, 8 and the like. Rewind gear (A) 28 shown in FIG. 5 (hereinafter, the rewind gear is RW
(Referred to as a gear) is rotatably supported by a base plate (not shown), and the film feeding motor 101 (see FIG. 20).
Is connected via a gear train (not shown). Also, R
The W gear (B) 29 is rotatably supported by the camera body 4 and meshes with the RW gear (A) 28. R
The W gear (C) 30 is rotatably supported by the camera body 4 and the base plate 23, and meshes with the RW gear (B) 29.

On the shaft portion of the RW gear (C) 30, an R claw 31 is supported so as to be axially movable toward the cartridge chamber 4a so as to rotate integrally. The R tab 31 has a key 31 a and can be engaged with the key groove 3 c of the film cartridge 3. Also, the R tab 31 is
The W gear (C) is urged in a direction in which it is engaged with the film cartridge 3 by a spring 32 attached to the hollow portion of the shaft. When the key 31a of the R tab 31 and the key groove 3c of the film cartridge 3 are engaged with each other, the rotational force of the RW gear (C) 30 can be transmitted to the film cartridge 3, and the film can be rewound and fed out. .

At the upper part of the cartridge chamber 4a of the camera body 4, as shown in FIGS.
3 and the photoreflector (B) 34 are fixed to each other, and these two sensors enable the film cartridge 3
The information on the data disk 3d of a can be read.

Next, the cartridge eject mechanism will be described with reference to FIGS. The eject rod 26 is slidably attached to a guide groove 4d provided along the back surface of the cartridge chamber 4a of the camera body 4, and has a spring hook portion 26a and a body spring hook portion 4f.
The loaded film cartridge 3 is urged in a direction to push the loaded film cartridge 3 to the outside on the camera bottom side.

The eject rod 26 has a cam portion 26.
b, and the cam portion 26b has a drive lever 19
When the drive lever 19 is rotated to the cartridge chamber lid opening position, the elastically deformable spring portion 19a comes into contact with the ejecting rod 26 to apply an urging force in a direction to push out the cartridge 3. Furthermore, the eject rod 26 is
It has an arm portion 26c projecting to the cartridge chamber 4a side, and the arm portion 26c is in contact with the bottom surface of the loaded film cartridge 3, and by the spring 35 and the biasing force of the spring portion 19a of the drive lever 19, the cartridge Extrude 3.

Next, the structure around the cartridge chamber lid will be described with reference to FIGS. 8 and 11 to 16. The cartridge chamber cover 8 is a hinge shaft 1 fixed to the camera exterior body 1.
It is rotatably attached with 0 as the center of rotation. A pressing member 38 is fixed to the cartridge chamber lid 8.

The positioning shaft 37 is attached to the pressing member 38 so as to be axially movable and non-rotatable.
The cartridge 3 is urged in the direction of pressing the RW gear (C) 30 by the spring 39 of the urging means attached to the pressing member 38, and the end surface of the loaded cartridge 3 is set by the RW gear (C) 30. It works so as to press it against the reference surface 30a. The positioning shaft 37 also engages with the positioning hole 3f of the cartridge 3 to perform positioning on a plane orthogonal to the shaft of the cartridge 3. The tip end of the positioning shaft 37 is formed with an inclined surface 37a for surely positioning the cartridge as described later.

The holding member 38 is provided with a cartridge holding portion 38a. The height of the holding portion 38a is such that when the cartridge 3 is pushed into the cartridge chamber 4a to a predetermined depth, When the cartridge 3 is in contact with the cartridge 3 and is pressed by the positioning shaft 37 and is abutted against the reference surface 30a, the height is set such that the cartridge 3 is separated and does not contact.
Further, the pressing member 38 has a protruding fitting portion 38b and can be fitted to the inner peripheral surface of the insertion opening of the cartridge chamber 4a in a state where the cartridge chamber lid 8 is closed.

The shape of the hole 8c of the cartridge chamber lid 8 that fits with the hinge shaft 10 is an elongated hole as shown in FIG. 8, and as shown in FIG.
And an axial gap δ is provided between the cartridge chamber lid 8. Therefore, the cartridge chamber lid 8 is movable in a plane orthogonal to the axis of the cartridge 3 before fitting. The axial direction of the cartridge 3 in the cartridge chamber and the position of the cartridge chamber lid 8 in the plane orthogonal to the axis are determined by the fitting between the pressing member 38 and the cartridge chamber 4a. Therefore, the loaded cartridge 3 can be accurately positioned regardless of the positional relationship between the camera body 4 and the camera exterior body 1. In addition,
As described above, in the apparatus of this embodiment, the cartridge chamber lid 8 is provided with the elongated hole 8c, but the same effect can be obtained even if the supporting hole on the camera exterior body 1 side that supports the hinge shaft 10 is formed into the elongated hole shape. can get.

Further, as shown in FIGS. 8 and 14, a leaf spring 36 is arranged between the cartridge chamber lid 8 and the hinge shaft 10 supporting portion of the camera exterior body 1. This leaf spring 36
The protrusion 8 provided on the cartridge chamber lid 8 by the urging force F0
Pressing d. The urging force F0 urges the cartridge chamber lid 8 in the opening direction.

The cartridge lock lever 11 for holding the loaded cartridge 3 in the loading position is shown in FIG.
As shown in FIG. 5, the camera body 4 is rotatably supported by the camera body 4 and is urged by a spring 40 in the direction of arrow W 1 in the figure, which moves to a position where ejection of the cartridge 3 is blocked. The cartridge lock lever 11 is provided with a cartridge lock portion 11a, a knob portion 11b, and a slope portion 11c.

As shown in FIGS. 11 and 13, the cartridge lock lever 11 usually has a lock portion 11a protruding into the cartridge chamber 4a to prevent the cartridge 3 from being ejected by the eject rod 26. By operating the knob portion 11b in the direction opposite to the arrow W in the drawing to move the cartridge lock lever 11 to the retracted position, the cartridge 3 can be taken out.

As shown in FIG. 13, an inclined surface portion 11c is provided on the opposite side of the cartridge lock lever 11 from the cartridge lock portion 11a, and when the cartridge 3 is loaded, the cartridge 3 and the inclined surface portion 11c contact each other. Contact. Further, when the cartridge 3 is pushed in, the end surface of the cartridge 3 pushes the inclined surface portion 11c, the cartridge lock lever 11 moves to the retracted position, and the film cartridge 3 can be loaded.

FIG. 20 is a block diagram showing the main structure of the film loading device of the camera control device of this embodiment. The control device is mainly composed of a CPU,
The control circuit 102 that controls the entire camera and the pressing of the lock button 7 are detected to detect the cartridge lid 8
SW (A) 20 which is a switch for detecting the opening operation of
And SW (B) 24 which is a switch for detecting the opening / closing state of the cartridge chamber lid 8 and the closed state of the cartridge light shielding lid 3a by detecting the rotation of the drive lever 19, and the film when the lock button 7 is pressed. PCV (piezoelectric element) 103 that issues an alarm when the cartridge lid 8 cannot be opened and the data of the data disk provided in the film cartridge 3 has been filmed, filmed, film sensitivity, etc. , A photoreflector (A) 33 for reading film information, a photoreflector (B) 34, and a film feeding motor 101 for feeding a film.

The film cartridge loading / unloading operation in the camera of this embodiment having the above-described configuration will be described. First, the unlocking operation of the cartridge chamber lid will be described with reference to FIGS. 2, 3, 4, and 8. While pushing the lock button 7 in the direction of arrow D in FIG. Slide it in the direction of arrow E in FIG.

At this time, if the cartridge chamber lid opening knob 6 is operated without pushing the lock button 7, the arm portion 7a of the lock button 7 contacts the stopper portion 12a provided on the cover member 12, so that the cartridge chamber is opened. The lid opening knob 6 cannot be slid. That is, by pushing the lock button 7, the cartridge chamber lid opening knob 6 can be slid.

When the lock button 7 is pushed in, the button 21
Also moves in the direction of arrow D in FIG. 8, and SW (A) 20 is turned on. At this time, if the detection means (not shown) detects that the film is pulled out from the film cartridge 3, the PCV 103 gives a warning.

When the cartridge chamber lid opening knob 6 is slid, the protrusion 16b of the key lever 16 and the engaging protrusion 6d of the cartridge chamber lid opening knob 6 come into contact with each other. Further, when the cartridge chamber lid opening knob 6 is slid,
The engaging protrusion 6d causes the lock lever 16 to move in the direction of arrow F in FIG.
By rotating in the direction, the engagement between the hook portion 8a of the cartridge chamber lid 8 and the hook portion 16a of the key lever 16 is released, and the cartridge chamber lid 8 can be opened. At this time, the cartridge chamber lid 8 is slightly rotated by the leaf spring 36 in the direction in which the cartridge chamber lid 8 is opened, that is, in the direction of arrow G in FIGS.

The lock release portion 8b of the cartridge chamber cover 8 is rotated by rotating the cartridge chamber cover 8 as described above.
2 retreat from the unlocked position shown in FIG. 2, the lock lever 14 becomes rotatable, and the biasing force of the spring 15 causes the lock lever 14 to rotate to the locked position shown in FIGS. 3 and 4.

Next, when the slide operation of the cartridge chamber lid opening knob 6 is stopped and the hand is released, the cartridge chamber lid opening knob 6 moves in the direction of arrow H in FIG. 4 by the urging force of the spring 13. By the movement of the knob 6, the protrusion 6f of the cartridge chamber lid opening knob 6 becomes the protrusion 16c of the key lever 16.
Abut.

Further, when the cartridge chamber lid opening knob 6 moves, the key lever 16 rotates in the direction of arrow I in FIG. 4, and the stopper portion 16d of the key lever 16 contacts the lock lever 14 and stops. The abutment of the stopper 16d also prevents the cartridge chamber lid opening knob 6 from moving,
Stop. In this state, the cartridge 3 can be taken out and loaded.

When the cartridge chamber lid 8 is rotated in the direction of arrow J in FIG. 4 after the cartridge is taken out or loaded, the lock release portion 8 of the cartridge chamber lid 8 is released.
d pushes the tip of the lock lever 14,
4 rotates to the unlocked position.

The rotation of the lock lever 14 releases the lock of the key lever 16 by the lock lever 14,
The key lever 16 becomes rotatable. The key lever 16
Is pushed by the protrusion 6f of the cartridge chamber lid opening lever 6, and the hook portion 8a of the cartridge chamber lid 8 and the key lever 1 are pushed.
The hook portion 16a of 6 moves to a position where it can be engaged. When the key lever 16 moves to the engagement position with the cartridge chamber lid 8, the contact between the protrusion 6f of the cartridge chamber lid opening knob 6 and the protrusion 16c of the key lever 16 is released, and the rotation of the key lever 16 is stopped.

After that, the lock lever 16 is engaged with the lock lever 16 by the side wall 6f 'of the projection 6f of the cartridge chamber lid opening knob 6 so that the lock lever 16 is prevented from rotating in the direction of releasing the engagement of the cartridge chamber lid 8. State is retained.

The SW (A) 20 is held in the ON state by pressing the button 21 against the guide rib 6g during the sliding operation of the cartridge chamber lid opening knob 6 described above. When returning to the initial position shown in FIGS. 2 and 8, the button 21 is pushed out by the spring 22, the lock button 7 is projected to the lock position, and the SW (A) 20 is turned off.

Next, the opening / closing operation of the light shielding lid 3a of the cartridge 3 will be described with reference to FIGS. 2 to 6 and FIGS. Set the cartridge chamber lid open knob 6 to the arrow E in FIG.
Slide it in the direction to open the cartridge chamber lid open knob 6
Rack portion 6c and the large diameter gear portion 17a of the gear (A) 17
Gears (A) 17 are engaged with each other by an arrow K in FIG.
Rotate in the direction. Also, the small-diameter gear portion 1 of the gear (A) 17
7b and the gear (B) 18 mesh with each other, the gear (B) 18 rotates in the direction of arrow L in FIG.

Since the engaging portion 18a of the gear (B) 18 and the drive lever 19 are engaged, the gear (B) 18
When is rotated, the drive lever 19 is rotated in the direction of arrow M in FIGS. 2, 5, and 9 to be in the state shown in FIGS. 4, 6, and 10. By rotating the drive lever 19 as described above, the SW (B) 24 is turned on as shown in FIG. When the SW (B) 24 is turned on, the control circuit 102 (see FIG. 20) determines that the cartridge chamber lid 8 is opened.

Further, when the drive lever 19 rotates from the state shown in FIG. 2, the drive lever projection 19b also rotates in the direction of arrow M in FIG. As the protrusion 19b of the drive lever 19 rotates, the cam portion 25b of the light shielding lid opening / closing lever 25
Abut. When the drive lever 19 further rotates, the cam portion 25b of the light shielding lid opening / closing lever 25 is pushed,
The light-blocking lid opening / closing lever 25 rotates to the position shown in FIG. However, at this point, the protrusion 19b of the drive lever 19
Is at position Z1 in FIG.

When the light-blocking lid opening / closing lever 25 is rotated to the position Z1 shown in FIG. 10, the protrusion 19b of the drive lever 19 is moved.
Then, the contact of the cam portion 25b of the light shielding lid opening / closing lever 25 is released, and the rotation of the light shielding lid opening / closing lever 25 is stopped. At this position, the light shielding lid 3a of the cartridge 3 is in a closed state.

The drive lever 19 continues to rotate further, and when it reaches a little before reaching the maximum stroke position in the state where the cartridge chamber lid opening / closing knob 6 is locked, it further moves from the position Z1 in FIG. Rotate to Z2. At this time, the rotation of the light shielding lid opening / closing lever 25 in the direction of the arrow N is restricted by the cam portion 25b ′ of the light shielding lid opening / closing lever 25 coming into contact with the protrusion 19b of the drive lever 19. Arrow O
The rotation in the direction is regulated by the stopper 4a of the camera body 4 contacting the stopper 25a of the light-shielding lid opening / closing lever 25.

At the protrusion 19b of the drive lever 19, there is an overstroke section between the positions Z1 and Z2, that is, the drive lever 1 after the drive of the light shielding lid opening / closing lever 25 is completed.
Since there are nine rotation sections, the operation timing of the key lever 16 is set so that the engagement between the key lever 16 and the cartridge chamber lid 8 is released when the overstroke section is reached. By setting in this way, it is possible to prevent the cartridge chamber lid 8 from opening before the light-shielding lid 3a of the film cartridge 3 is completely closed, and to prevent an accident that the film is exposed.

Further, since the rotation of the light-shielding lid opening / closing lever 25 is restricted by the stopper 4b of the camera body 4 and the projection 19b of the drive lever 19, it is possible to accurately guarantee the stop position. Since the light-blocking lid opening / closing lever 25 does not rotate carelessly, the light-blocking lid 3a of the film cartridge 3 does not open when the cartridge 3 is taken out from the camera body 4.

On the other hand, when the cartridge chamber lid opening knob 6 moves in the direction of arrow H in FIG. 4, the gear (A) 17
4 and 6, and the gear (B) 18 rotates in the directions of arrows P and Q in FIG. 4, respectively.
It rotates in the direction of arrow R in FIG. At this time, the protrusion 19b of the drive lever 19 also rotates in the arrow R direction. As the protrusion 19b of the drive lever 19 rotates, it comes into contact with the cam portion 25b of the light shielding lid opening / closing lever 25. When the drive lever 19 further rotates, the cam portion 25b of the light shielding lid opening / closing lever 25 is pushed, and the light shielding lid opening / closing lever 19 rotates to the position shown in FIG.

When the light-blocking lid opening / closing lever 25 is rotated to the position shown in FIG. 9, the contact between the projection 19b of the drive lever 19 and the cam portion 25b of the light-blocking lid opening / closing lever 25 is released,
The rotation of the light shielding lid opening / closing lever 25 stops. At this position, the light shielding lid 3a of the cartridge 3 is in an open state.

When the cartridge chamber lid opening knob 6 moves to the position shown in FIGS. 2 and 8, the drive lever 19 moves to the position shown in FIG. Regarding the rotation of the drive lever 19, there is provided an overstroke section after the rotation of the light shielding lid opening / closing lever 25 is stopped, that is, after the light shielding lid is opened, and the SW (A) 20 is turned off in this overstroke section. Is set.

Further, as shown in FIG. 10, the drive lever 19
Is started, and a play section Y is provided until the protrusion section 19 of the drive lever 19 comes into contact with the cam section 25b of the light-shielding lid opening / closing lever 25. Within this play section Y, the lock lever 16 and the cartridge chamber lid 8 are separated. The operation timing of the key lever 16 is set so as to engage. By setting in this way, it is possible to prevent the light shielding lid 3a of the cartridge 3 from being opened before the cartridge chamber lid 8 is completely closed, and the film is exposed due to the incomplete light shielding of the cartridge chamber 4a. It is possible to prevent accidents such as accidents.

In the state shown in FIG. 9, the rotation of the light-shielding lid opening / closing lever 25 is restricted by the stopper 4c of the camera body 4 and the projection 19b of the drive lever 19.
It is possible to accurately guarantee the stop position, and
The light shielding lid opening / closing lever 25 does not rotate carelessly, and the light shielding lid does not close during film feeding.

Next, with reference to FIGS. 2, 5, 8 and 11 to 19, the operation of taking out and loading the film cartridge 3 will be described. First, the film cartridge 3
When the cartridge chamber lid opening knob 6 is operated to release the engagement between the lock lever 16 and the cartridge chamber lid 8, the cartridge chamber lid 8 is slightly lifted by the urging force of the leaf spring 36. The cartridge chamber lid 8 can be moved to the open position. When the cartridge 3 is already loaded in the cartridge chamber 4a, the cartridge 3 can be taken out from the cartridge chamber.

The cartridge 3 includes the eject rod 26.
Is urged by the camera body 4 in a direction to project to the outside of the camera, but its movement is blocked by the cartridge lock lever 11. This is to prevent the cartridge 3 from dropping from the camera when the cartridge chamber lid is opened with the cartridge chamber opening facing downward when the cartridge 3 is taken out from the camera.

Therefore, when the knob portion 11b of the cartridge lock lever 11 is operated in the direction opposite to the arrow W direction in FIG. 11 with the cartridge chamber lid 8 opened, the engagement between the cartridge lock lever 11 and the cartridge 3 is released. . By the releasing operation, the eject rod 26 causes the spring 35a and the spring 35a of the drive lever 19 to be urged by the spring 35a.
The cartridge 3 is pushed out by moving along the guide groove 4b of the camera body 4 by the urging force of. Then, it abuts on the stopper 4d 'of the camera body and stops. Since the film cartridge 3 has moved from the bottom of the camera to a position where it can be picked up with a finger, the cartridge 3 can be picked up with a finger and taken out of the cartridge chamber.

By the way, the film cartridge 3 is shown in FIG.
In the state of, the R tab 31 and the light-blocking lid opening / closing lever 25 are engaged with the film cartridge 3, and the cartridge 3 is pulled in order to pull them out from the cartridge 3.
It requires extra strength than lifting a single unit. However, if this extra force is constantly applied to the cartridge 3, the film feeding operation becomes unstable.

Therefore, in the cartridge loading apparatus of the present embodiment, the drive lever 19 is provided with the spring portion 19a, and the urging force due to the elastic deformation of the spring portion 19a provides the force for pulling out the R tab 31 and the light shielding lid opening / closing lever 25 from the cartridge 3. Have secured. On the other hand, the spring 35 that constantly applies a load to the cartridge 3 sets a weak force that can eject the cartridge 3 against the weight of the cartridge 3. That is, the weak force is set so that the cartridge 3 can be pushed up even when the opening of the cartridge chamber 4a faces upward. On the other hand, the drive lever 1
The spring portion 19a of No. 9 gives a relatively strong force so that the R tab 31 and the light shielding lid opening / closing lever 25 can be pulled out of the cartridge 3 when the cam portion 26a is mounted on the cam portion 26a, as will be described later. The stroke is also set to the stroke required to pull out the R tab 31 and the light-shielding lid opening / closing lever 25.

When the cartridge chamber lid opening knob 6 is in the position shown in FIGS. 2 and 8, the cam portion 26b of the eject rod 26 and the spring portion 19a of the drive lever 19 are in contact with each other as shown in FIG. However, the tensile force of the spring 35 acts only on the eject rod 26.

Therefore, when the cartridge chamber lid opening knob 6 is operated in the direction of arrow E in FIG. 2, the drive lever 19 rotates in the direction of arrow M in FIG. 5 as described above. The rotation causes the spring portion 19a of the drive lever 19 to move to ride on the cam portion 26b of the eject rod 26 as shown in FIG. The eject rod 26 moves in the direction of arrow T in FIG. 19 due to the elastic deformation of the spring portion 19a of the drive lever 19,
That is, the cartridge 3 is biased in the ejecting direction to move the cartridge 3 to the R tab 31 or the light-shielding lid opening / closing lever 2.
It can be reliably pulled out from 5.

Next, the loading operation of the cartridge 3 will be described. First, the cartridge 3 is placed in the cartridge chamber 4a.
Push it in. At this time, the cartridge lock lever 1
1 is urged by the spring 40 so that the cartridge chamber 4
It is in a state of protruding into the opening a. However, since the cartridge 3 pushes the inclined surface portion 11c of the cartridge lock lever to move the cartridge lock lever 11 to the retracted position, the cartridge 3 can be loaded.

Further, when the cartridge 3 is pushed to a position where it can be locked by the cartridge lock lever 11, the cartridge 3 is locked by the cartridge lock lever 11. At this time, the light shielding lid 3a of the cartridge 3
And the cartridge engaging portion 25c of the light shielding lid opening / closing lever 25
The light shielding lid opening / closing lever 25 is driven so that the light shielding lid 3a of the cartridge 3 can be opened.

Next, when the cartridge chamber lid 8 is closed, the lock lever 14 moves to the unlocked position, the lock of the cartridge chamber lid opening knob 6 is released, and the cartridge chamber lid opening knob 6 is moved to the position shown in FIG. The cartridge chamber lid 8 is locked in the closed position by the lock lever 16 while the cartridge chamber lid 8 is moved to the position shown in FIG. 8, and the light shielding lid 3a of the cartridge 3 is opened, and the autoloading is started.

At this time, the position of the cartridge 3 in the plane orthogonal to the axis of the cartridge 3 is determined by the positioning shaft 37, and the cartridge 3 is pushed up by the spring 39 and abuts against the reference surface 30a. That is, since the positioning shaft 37 is pressed against the cartridge 3 by the spring 39 with respect to the axial direction of the cartridge 3, the positional relationship between the cartridge chamber lid 8 and the cartridge chamber 4a in the axial direction of the cartridge 3 is not so affected. , Some variation is allowed.

However, in the plane orthogonal to the axis of the cartridge 3, the cartridge chamber lid 8 and the camera body 4 are
If the deviation occurs in the position, the positional relationship between the positioning shaft 37 and the R tab 31 may be misaligned, the cartridge 3 may be tilted, and the film may not be fed correctly. Therefore, in the cartridge loading apparatus of the present embodiment, the pressing member 38 that directly supports the positioning shaft 37 is fitted into the opening of the cartridge chamber 4a of the camera body 4, and the camera body 4
It is taken into consideration that the positional relationship between the positioning shaft 37 and the positioning shaft 37 on the above-mentioned plane can be accurately obtained.

Further, when the cartridge chamber lid 8 is closed in a state where the cartridge 3 is not properly pushed to the bottom surface of the cartridge chamber 4a, the pressing member 38 as shown in the sectional view of FIG. 21 at the beginning of closing the cartridge chamber lid. Presser part 3
8a pushes the end surface of the cartridge 3 and pushes the cartridge 3 to a fixed position.

Next, FIGS. 22 to 25 and FIGS.
28, the tip shape of the positioning shaft 37 will be described. For example, when the positioning shaft 37 has a spherical tip shape like the positioning shaft 37A shown in the sectional view around the cartridge chamber lid in FIG. 27 and the cartridge chamber lid 8 is rotated around the hinge shaft 10, the cartridge 3 The positioning hole 3f interferes with the tip of the shaft 37A, so that the shaft cannot be rotated and the cartridge chamber lid 8 cannot be opened.

Further, in a shape such as the positioning shaft 37B having a shortened overall length shown in FIG. 27, if the position of the cartridge 3 is incorrect, the cartridge 3 is closed as shown in FIG. 28 showing the closing operation of the cartridge chamber lid. Since the positioning shaft 37B interferes with the positioning chamber 37B, the cartridge chamber lid 8 cannot be closed.

Therefore, in the cartridge loading apparatus of this embodiment, the shape of the positioning shaft 37 is changed to that shown in FIGS.
Immediately before closing around the cartridge chamber lid, as shown in the cross-sectional view in the closed state, the fitting length on the side that interferes on the rotation trajectory is shortened, and the sloped portion 37a is provided at the tip so as to surely engage with the cartridge. Is provided.

Due to the shape of the positioning shaft 37 described above, even if the position of the cartridge 3 is deviated, the positioning hole 3f of the cartridge 3 and the positioning shaft 37 are engaged with each other while the cartridge 3 is moved to the correct position by the inclined surface portion 37a. Then, it becomes easy to close the cartridge chamber lid 8. further,
It is easy to open the cartridge chamber lid 8 and detach the positioning hole 3f from the positioning shaft 37.

The shape of the tip of the positioning shaft 37 is as follows.
It suffices that the cross-sectional shape orthogonal to the hinge shaft 10 that is the rotation center shaft of the cartridge chamber cover is inclined as shown in FIG. As one of the tip shapes of the positioning shaft 37, as shown in the perspective view of the tip portion of FIG.
It may be formed of a '. A conical axis center x ′ passing through the apex of the tip of the conical surface 37a ′ is on a cross section orthogonal to the hinge axis 10 passing through the axis x of the positioning axis 37, and the axis of the hinge axis 10 is closer to the axis x than the axis x. It is assumed to be eccentric to the side. That is, the tip portion is the cartridge chamber lid 8
On a cross section orthogonal to the rotation center axis of the cartridge, the apex is formed by a conical surface located closer to the rotation center of the cartridge lid than the center of the positioning shaft 37.

As another tip shape of the positioning shaft 37, a flat surface 37a "inclined with respect to the axis of the positioning shaft 37 is formed as shown in the perspective view of the tip of FIG. However, it is preferable that the flat surface 37a ″ be inclined along a surface parallel to the hinge axis 10 direction. Furthermore, as another one of the tip shapes of the positioning shaft 37, a convex curved surface may be formed along an axis inclined with respect to the axis of the positioning shaft 37.

Next, the film autoloading operation of the camera incorporating the cartridge loading device of this embodiment will be described with reference to the block diagram of the control device of FIG. 20, the flowchart of FIG. 26, and the like. First, step S110
8, when the lock button 7 is pushed in the direction of the arrow D in FIG. 8 and it is detected that the SW (A) 20 is turned on,
In step S111, it is checked whether or not the film has been pulled out from the cartridge. When it is detected that the film has been pulled out, in step S112, the PCV 103 (see FIG. 20) gives a warning. Since the slide operation of the cartridge chamber lid opening knob 6 cannot be performed unless the lock button 7 is pushed in this way, the state where the film is pulled out can be surely checked when the knob is operated, and the state can be known by a warning. You can

When the film is not pulled out, when the cartridge chamber lid opening knob 6 is slid while pushing the lock button 7, the drive lever 19 rotates in the direction of arrow M in FIG. Is turned on, the light-blocking lid opening / closing lever 25 is rotated and the cartridge 3
The light-shielding lid 3a is closed. In step S113, S
By detecting that the W (B) 24 is turned on, it is detected that the light shielding lid 3a of the film cartridge 3 is closed and the cartridge chamber lid 8 is opened.

In step S114, the photographed cartridge 3 is taken out and the new cartridge 3 is pushed into the cartridge chamber of the camera. At this time, the cartridge engaging portion 25c of the light-blocking lid opening / closing lever 25 and the light-blocking lid 3a of the film cartridge 3 are engaged with each other, and the light-blocking lid can be opened.
That is, the open standby state is set. Further, when the above-mentioned cartridge is loaded, the key groove 3c of the film cartridge 3 and the R
When the key 31a of the claw 31 does not mesh, the R claw 31 moves in the direction of arrow S in FIG. 8 and is retracted.

Subsequently, when the cartridge chamber lid 8 is closed, the cartridge chamber lid opening knob 6 is unlocked and moved to the position shown in FIGS. 2 and 8 by the biasing force of the spring 13. To do. At this time, the drive lever 19 rotates in the arrow R direction in FIG. Due to this rotation, the light shielding lid opening / closing lever 25 is also rotated, and the light shielding lid 3a of the film cartridge 3 is rotated.
Is opened.

Further, the lock button 7 is moved to the position shown in FIG. 8 by the urging force of the spring 22, and the SW (A) 20
Turns off. When it is detected in step S115 that the SW (A) is off and the cartridge chamber lid 8 is closed, the process proceeds to step S116.

In step S116, the film feeding motor 101 is rotated in the reverse direction. The reverse rotation of the motor 101 causes the gear train to rotate in the direction of arrow V in FIG. 5, and the R tab 31 also rotates in accordance with the rotation of the RW gear (C) 30. Then, when the key 31a of the R tab 31 rotates to a position where it can be engaged with the key groove 3c of the film cartridge 3, the R tab 31 slides by the biasing force of the spring 32 and engages with the film cartridge 3. This engagement causes a spool (not shown) in the film cartridge 3 to rotate,
The data disk 3d also rotates together.

In step S117, the rotation state of the data disk 3d is detected by the photo reflector (A) 33 and the photo reflector (B) 34, and the initial position of the data disk 3d is determined. Based on the detection result of the initial position, it is determined in step S118 whether or not the film is unused. If the film is not unused or if it has been developed, the data disc is set to the film used position. Drive to step S
At 119, it is confirmed that the data disc is at the film used position, and the film feeding motor 101 is stopped at step S120.

On the other hand, if it is determined in step S118 that the film is unused, then in step S12
At 1, the data disc 3d is rotated to read the information of the data disc 3d, that is, the ISO sensitivity, the number of photographable frames, and the like. When the reading of the information on the data disk 3d is completed, the film feeding motor 101 is rotated in the normal direction in step S122. By this normal rotation drive, the gear train rotates in the direction opposite to the direction of arrow V in FIG. 5, and the film feeding is started. When it is detected in step S123 that the film has been fed to the predetermined position, that is, the shooting enabled position, it is determined that the autoloading is completed, the process proceeds to step S124, and the film feeding motor 101 is stopped. With the above operation, the auto loading of the film is completed.

As described above, according to the film loading apparatus of this embodiment, the tip end of the positioning shaft 37 on the cartridge chamber lid 8 side is the inclined surface 37a, and the fitting length on the interfering side on the rotation locus is set. By making it shorter, the positioning hole 3f of the cartridge 3 and the positioning shaft 37 can be engaged and disengaged smoothly, and even if the relative position of the cartridge 3 is deviated before the engagement, the positioning hole 37f is aligned with the inclined surface 37a. The positioning hole 3f is engaged while being guided, and the cartridge 3 can be supported in a posture without inclination.

Furthermore, since the parallel portion of the base portion of the positioning shaft 37 having an appropriate length is fitted in the positioning hole 3f,
Even if a radial biasing force is applied to the cartridge 3, no displacement occurs.

Further, since the loaded cartridge 3 is axially pressed by the urging force of the spring 39 having the positioning shaft 37 incorporated therein, the end surface of the cartridge 3 can be reliably brought into contact with the reference surface 30a, and the cartridge 3 The axial positioning of the can also be accurately performed.

(Supplementary Note) According to the above embodiment of the present invention, the following configuration can be obtained. (1) A camera using a film cartridge in which a film is stored, wherein the film cartridge chamber and a cartridge chamber lid rotatable between a position for closing the film cartridge chamber and a position for opening the film cartridge chamber. A positioning shaft that is attached to the cartridge chamber lid so as to be movable in the axial direction, engages with the film cartridge with the cartridge chamber lid closed, and positions the film cartridge; A film loading device having a biasing means for biasing the film cartridge in a direction of pressing the film cartridge, wherein a beveled portion is provided at the tip of the positioning shaft.

(2) The inclined surface is a conical surface whose center axis is closer to the center of rotation of the cartridge chamber lid than the center of the positioning shaft on a cross section orthogonal to the center of rotation of the cartridge chamber lid. The film loading device according to appendix (1), characterized in that (3) The inclined surface portion is characterized in that, in a cross section orthogonal to the central axis of rotation of the lid, its apex is formed as an inclined surface closer to the rotational center of the lid than the center of the axis 1) The film loading device as described above. (4) The film loading device according to appendix (3), wherein the inclined surface is a flat surface.

(5) The inclined surface portion is formed as a conical surface whose apex is closer to the rotation center of the cartridge lid than the center of the positioning shaft on the cross section orthogonal to the rotation center axis of the cartridge chamber lid. The film loading device according to note (1). (6) The film loading device according to appendix (1), wherein the urging means is a spring member.

(7) A camera using a film cartridge containing a film, wherein a film cartridge chamber for loading the film cartridge, a position for closing the film cartridge chamber,
A cartridge chamber lid that is rotatable between the opening position and
A film loading device having a positioning shaft attached to the cartridge chamber cover so as to be movable in the axial direction, engaging with the film cartridge in a state where the cartridge chamber cover is closed, and positioning the film cartridge, A film loading apparatus characterized in that a fitting length of a side of the positioning shaft that interferes with the engaging portion of the cartridge is shortened so as not to interfere with an engaging portion of the cartridge.

(8) In a camera using a film cartridge, there is provided a film loading device characterized in that an inclined surface portion is provided at a tip of a positioning shaft which engages with the cartridge and positions the cartridge. (9) The film loading device according to appendix (8), wherein the inclined surface portion is a flat surface. (10) The film loading device according to appendix (8), wherein the slope portion is a curved surface.

[0099]

As described above, according to the film loading apparatus of the first aspect of the present invention, the positioning shaft having the inclined surface at the tip is attached to the rotatable cartridge chamber lid, and the positioning shaft is used. Since the cartridge is positioned, it is possible to reliably engage and disengage the positioning shaft with the positioning hole of the cartridge.

According to the film loading device of claim 2 of the present invention, in the film loading device of claim 1,
Since a conical surface having an eccentric shaft center near the center of rotation of the cartridge chamber lid is provided at the tip of the positioning shaft, engagement and disengagement of the positioning shaft with respect to the positioning hole of the cartridge can be performed reliably and smoothly.

According to the film loading apparatus of the third aspect of the present invention, in the film loading apparatus of the first or second aspect, the apex position of the inclined surface portion is closer to the rotation center of the cartridge chamber lid. Since it is configured to
Engagement and disengagement of the positioning shaft with respect to the positioning hole of the cartridge can be performed reliably and smoothly.

[Brief description of drawings]

FIG. 1 is a perspective view of a camera in which a film loading device according to an embodiment of the present invention is incorporated and a film cartridge to be loaded, as viewed obliquely from the bottom side of the camera.

2 is a perspective view of the cartridge chamber mechanism portion of the camera of FIG. 1 as seen from the side of the camera, showing a state in which the cartridge chamber lid is closed.

3 is a perspective view of the cartridge chamber mechanism portion of the camera of FIG. 1 as seen from the side of the camera, showing a state immediately after the cartridge lid is opened.

FIG. 4 is a perspective view of the cartridge chamber mechanism portion of the camera of FIG. 1 as seen from the side of the camera, showing a state in which a cartridge chamber lid opening knob is locked.

5 is a perspective view of the cartridge chamber of the camera of FIG. 1 seen from the top side of the camera, showing a state when the cartridge chamber lid is closed.

6 is a perspective view of the cartridge chamber of the camera of FIG. 1 as viewed from the top side of the camera, showing a state when the cartridge chamber lid is opened.

7 is a perspective view of the camera chamber of the camera of FIG. 1 as viewed from the top side of the camera, showing the arrangement of photo reflectors for reading data disks.

8 is a cross-sectional view taken along the line AA 'in FIG. 5, showing a loaded state of the cartridge.

FIG. 9 is a view showing an operating state of the light-shielding lid opening / closing lever in FIG.

FIG. 10 is a view showing an operating state of the light shielding lid opening / closing lever in FIG.

11 is a view of the cartridge chamber of the camera of FIG. 1 seen from the bottom side of the camera, showing a state in which the cartridge chamber lid is opened.

12 is a view of the cartridge chamber of the camera of FIG. 1 seen from the bottom side of the camera, showing a state in which the cartridge chamber lid is closed.

13 is a sectional view taken along line CC ′ of FIG.

14 is a cross-sectional view showing the vicinity of the rotation center of the cartridge chamber lid in the camera of FIG.

15 is a view of the cartridge chamber cover of the camera of FIG. 1 viewed from the bottom surface of the camera.

16 is a cross-sectional view taken along the line BB ′ of FIG.

FIG. 17 is a perspective view of the vicinity of the eject rod of the cartridge chamber of the camera of FIG. 1 as viewed from the back side of the camera.

18 is a perspective view of the vicinity of the eject rod in the camera of FIG. 1 as seen from the back side of the camera, showing a state in which the spring portion is not acting. FIG.

19 is a perspective view of the vicinity of the eject rod in the camera of FIG. 1 as viewed from the rear side of the camera, showing a state in which a spring portion acts.

20 is a block diagram showing a main configuration of a film loading device of the control device of the camera shown in FIG.

21 is a cross-sectional view of the state in which the cartridge chamber lid is being closed around the cartridge chamber lid in the camera of FIG.

22 is a cross-sectional view around the cartridge chamber lid in the camera of FIG. 1 immediately before the cartridge chamber lid is closed.

23 is a cross-sectional view of the camera of FIG. 1 with the cartridge chamber lid closed around the cartridge chamber lid.

24 is a perspective view showing an example of the shape of the tip of the positioning shaft of the cartridge chamber lid in the camera of FIG.

25 is a perspective view showing another example of the tip end shape of the positioning shaft of the cartridge chamber lid in the camera of FIG.

FIG. 26 is a flowchart of film autoload processing in the camera of FIG.

FIG. 27 is a cross-sectional view of a cartridge chamber lid closed state in which a positioning shaft having a different shape from the positioning shaft of the film loading device of the present embodiment is applied.

FIG. 28 is a cross-sectional view of a cartridge chamber lid closed state in which a positioning shaft having a different shape from the positioning shaft of the film loading device of the present embodiment is applied.

[Explanation of symbols]

 3 ... Cartridge 4a ... Film cartridge chamber 8 ... Film cartridge chamber lid 37 ... Positioning shaft 37a ... Slope 37a '... Conical surface 39 ... Spring (biasing means)

Claims (3)

[Claims] 1. A camera using a film cartridge containing a film, the film cartridge chamber for loading the film cartridge, a position for closing the film cartridge chamber, and a position for opening the film cartridge chamber. A cartridge chamber lid that is rotatable with respect to the film cartridge, and a positioning shaft that is attached to the lid so as to be movable in the axial direction, engages with the film cartridge with the lid closed, and positions the film cartridge. In the film loading device, a sloping surface portion is provided at the tip of the positioning shaft. 2. The inclined surface portion is a conical surface whose center axis is closer to the rotation center of the cartridge chamber lid than the center of the positioning shaft on a cross section orthogonal to the rotation center axis of the cartridge chamber lid. The film loading device according to claim 1, wherein the film loading device is formed. 3. The inclined surface portion is formed as an inclined surface whose apex is closer to the rotation center of the cartridge chamber lid than the center of the positioning shaft on a cross section orthogonal to the rotation center axis of the cartridge chamber lid. The film loading device according to claim 1, wherein: