JPH0296735A - Camera - Google Patents

Abstract

PURPOSE:To load film as if it were a cassette by sliding a cartridge housing chamber almost perpendicular to the film travelling direction when the chamber protrudes outside a camera. CONSTITUTION:The cartridge housing chamber 3 is constituted in such a way that it projects outside the camera by sliding almost perpendicular to the film travelling direction when the film is loaded. Moreover, the cartridge housing chamber 3 has a prescribed angle with respect to the surface of the currently carried film when the cartridge housing chamber protrudes at most. A torsion spring 10 serves to tilt the cartridge housing chamber 3 by a prescribed angle, centered about a shaft 9, when the chamber 3 protrudes by a prescribed length determined by a guide pin, a guide hole 9c and a guide groove 9d and when a claw 3e is released from the engagement with the top 8e of a housing base 8. Thus, film can be loaded as if it were a cassette.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera, and more particularly to a camera equipped with a simple loading mechanism for loading and unloading a film cartridge.

[Prior art and its problems]

Conventionally, when loading film, the leading end of the film is inserted into a slit in the spool and then wound around the spool. With this method, loading is completed automatically by simply loading the film cartridge into the cartridge chamber of the camera, pulling out a predetermined length of film from the film cartridge, and closing the back cover. The reality is that some people are unable to load cassette tapes into their cameras.This is because, unlike audio and video cassette tapes, film cartridges have a so-called league part that protrudes from the leading edge of the film, making users worried about handling it. In order to increase the probability of successful autoloading, the camera instruction manual also includes instructions such as ``Align the leading edge of the film with the mark,'' ``If the film is long, rewind it a little,'' and ``If the film is This is thought to be due to the fact that there are many precautions such as "Please close the back cover so that it does not float up," which confuses users.

On the other hand, there are also cameras on the market that employ a so-called drop-in loading system, which is designed to have a cassette-like film loading system.

For example, the film cartridge is dropped into the cartridge chamber through an opening formed on the bottom of the camera, but in this case, if the league portion of the film is longer than a predetermined length, loading may be hindered. To solve this problem, a cutter device is installed inside the camera.
Some proposals have been made to cut off the excessively long part of the leading edge of the film, but in this case, there are problems such as the cut film pieces remaining inside the camera and the chips having a negative effect on the internal mechanisms of the camera. be.

Furthermore, if you open the lid provided on a part of the back lid that corresponds to the cartridge chamber, load the film cartridge from here, and close the lid with the film reader section still exposed outside the camera, loading will begin automatically. A camera designed to do so has also been proposed in Japanese Patent Laid-Open No. 62-215256 by the present applicant. However, even this proposal was far from being able to load film in a cassette-like manner.

[Means for solving problems]

The present invention solves the above-mentioned drawbacks of the conventional example, and includes a storage section for storing a film cartridge, a cartridge storage chamber that can protrude to the outside of the camera, and a film cartridge that can be loaded into the protruded cartridge storage chamber. In a camera configured such that when the cartridge storage chamber is then stored in the camera, the film pulled out from the film cartridge is automatically wound across the aperture in the camera, and the cartridge storage chamber is stored in the camera. The film is characterized in that when it protrudes to the outside, it slides approximately at right angles to the film running direction.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 is a schematic perspective view of the camera of the present invention, Figures 2 and 3 are
This figure is an exploded perspective view showing the main components of the camera of FIG. 1. In these figures, 1 is a film cartridge, la is a film, 2 is a camera, and 3 is a cartridge storage chamber, and the cartridge storage chamber 3 is formed with an opening 3a into which a film cartridge 1 can be inserted from above. There is. Reference numeral 3b denotes a rear portion integrally provided in the cartridge storage chamber 3, and 3c denotes a recess formed inside the rear portion 3b. It is fulfilling its role. A bottom portion 3d having an extended portion is formed on the lower side of the cartridge storage chamber 3, and a claw portion 3e is formed in the vertical direction at the tip of the bottom portion 3d, and the claw portion 3e is latched to a storage stand 8, which will be described later. It is now possible to do so. 3f is a recess for attaching a film detection prism 34 to be described later; 3g is a shaft hole into which a rotating shaft 9 is fitted;
3h is a light/dark pattern for position determination. Reference numeral 4 denotes a roller unit that is attached to the inside of the back surface 3b of the cartridge storage chamber 3 near the recess 3f by heat caulking or the like, and the roller unit 4 serves as a light shield.
a, and pressing parts 4b and 4c for pressing the film 1a against a sprocket 41, which will be described later, and both tangent parts 4b.
, 4c, the tooth 41a of the sprocket 41 is in contact with the pressure part 4c.
The teeth 41b are adapted to enter below the respective parts.

Further, sloped portions 4d and 4e are formed at the upper portions of the pressure contact portions 4b and 4c so that the film Ia can easily enter from above.

5 is an idle gear train for rewinding; 6 is a fork gear for rotating the fork 7; the shaft portion of the fork gear 6 is fitted into a hole (not shown) in the lower surface of the cartridge storage chamber 3; . Further, a fork spring 36 is stretched between the fork 7 and the fork gear 6, and the fork spring 36 always urges the fork 7 upward. Said idle gear train5. The fork gears 6 are both fitted into shafts (not shown) at the bottom 3d of the cartridge storage chamber 3, and their positions in the thrust direction are regulated together with the fork 7 by a presser plate 37. 8, a pair of holes 8a are formed at one end of the storage stand 8;
By inserting the shaft 9 into the shaft hole 3g and the hole 8a, the storage stand 8 is rotatably attached to the lower part of the cartridge storage chamber 3. The storage table 8 also includes a rack portion 8b that engages with a winding gear (described later), a long guide hole 8c that engages with a guide bin 33a provided on the base plate 33 (described later), and provides guidance during sliding. A groove 8d is formed. Further, the claw 3e of the cartridge storage chamber 3 is adapted to engage with the tip end 8e of the storage stand 8. Reference numeral 10 designates a torsion spring that causes the cartridge storage chamber 3 to protrude by a predetermined length determined by the guide bin 33a, the guide hole 8C, and the guide groove 8d, and the claw 3e disengages from the tip 8e of the storage stand 8. At times, it serves to tilt the cartridge storage chamber 3 at a predetermined angle about the axis 9. This is because if you try to completely expose the opening 3a of the cartridge storage chamber 3, the amount of sliding becomes too large (too much), making the operation unstable, so the amount of sliding is reduced by tilting the cartridge storage chamber 3. Reference numeral 11 denotes a rear lid, which is integrated with the main body 13 by tightening screws or the like.The rear lid 11 has an outer rail Ila, which is two parallel protrusions extending in the film feeding direction, on the inside thereof. A rear cover roller 12, which rotatably supports the roller 12a, is attached to the roller attachment portion 11b.

Further, the roller 4a of the roller unit 4 is pressed into contact with the outer recessed portion 11d (see FIG. 8, which will be described later), so as to function as a light shield.

As shown in FIG. 12, which will be described later, the main body 13 is provided with an inner rail 13a similar to the conventional one, but an outer rail unlike the conventional one is not formed, and a recess 13b corresponding to the outer rail 11a is formed. Located above and below.

When the end surface of the outer rail fla comes into contact with the bottom surface of the recess 13b, the inner rail 13a of the main body 13 and the rear lid 1,
The outer rail lla of 1 and the plane 11c sandwiched between the two outer rails lla ensure a tunnel amount through which the film Ia can pass, and the position of the film 1a in the width direction is controlled not by the main body 13 but by the rear. The two outer rails Lla provided on the lid 11 provide a structure that eliminates the conventional pressure plate and pressure plate spring.

An opening 13c is formed in the side surface of the main body 13, and this opening is used for the photo ink printer 43 to read the light and dark pattern 3h of the cartridge storage chamber 3. Further, the main body 13 is formed with a battery storage section 13d having a bottom surface that follows the outer shape of the battery 46 so that the battery 46 is stored therein. 14 is a main body roller, which includes a roller 14a and a support plate 14b.
The main body roller 14 is rotatably attached to a spool chamber (not shown) of the main body 13, and is pressed against the spool 15 by the biasing force of a spring (not shown).
Together with 2, the film la wound around the spool 15 is held down.

Reference numeral 16 denotes a fixing base for the spool 15, which is fixed to the upper surface of the main body 13 with screws, etc., and the outer periphery of the shaft portion t6a is fixed to the upper surface of the main body 13.
It fits into the inner circumferential surface 15a of No.5.

] 7 is a fall prevention plate for preventing the tip of the film Ia from falling into the aperture (not shown);
Reference numeral 18 indicates a rotation shaft thereof, and reference numeral 19 indicates a drive lever for the fall prevention plate 17. The drive lever 19 has a two-sided shape, and one shaft 19a is connected to the drop prevention plate 17, so that the rotational force about the other shaft 29b of the drive lever 19 is directly transmitted to the drop prevention plate 17. It has become so. Further, the drive lever I9 has a lever portion 19c, and a cylindrical portion 19d is provided at the tip thereof. Reference numeral 20 denotes a film detection member, and when this film detection portion 20a is pushed by the film Ia, the film detection member 20 rotates around the shaft hole 20b, and the cylindrical portion 19d of the drive lever 19 inserted into the opening 20c of the film detection member 20 rotates. is rotated around axis 19b. Due to this rotation, the fall prevention plate 17 also rotates in a similar manner. 21 is a motor built into the spool 15, and a pinion 22 is fixed to its output shaft 21a.
The rotation of the pinion 22 is transmitted to a gear 24 via a gear train 23. The gear 24 consists of a large gear 24a, a small gear 24b, and a fitting part 24c (Fig. 11) between both gears 24a and 24b.The fitting part 24c fits into a hole 25a of the gear 25, and the small gear 24b are three gears 26 that rotate around three shafts 25b installed at equal 120° divisions of the gear 25.
It meshes with the Further, the gear 25 has a ratchet portion 25c on its outer periphery. The three gears 26 mesh with internal teeth 27b of a gear 27 having a ratchet portion 27a,
Also, outer teeth 27c are formed on the outer periphery of the gear 27.

As described above, the gears 24, 25. 26. 27 forms a planetary gear IIm, and the large gear 24a of the gear 24
When the driving force is transmitted to the ratchet portion 25 of the gear 25
The output form differs depending on whether the ratchet portion 27a of the gear 27 or the ratchet portion 27a of the gear 27 is engaged. That is, when the former is locked, the output is from the external teeth 27c of the gear 27, and when the latter is locked, the output is from the three gears 26.
Output is obtained from the gear 25 by the revolution of the gear 25.

The output from gear 25 is output from idle gear 38. One-way clutch gear 39° is transmitted to sprocket rotating shaft 40. Then, a distal end portion 40a of the sprocket rotating shaft 40, which has an oval-shaped cross section and is prevented from rotating, fits into the sprocket 41, so that the two rotate as one. The one-way clutch gear 39 and the sprocket rotating shaft 40 constitute a one-way clutch that rotates together in the film winding direction but is free in the film rewinding direction. The output from the gear 25 is also transmitted to the idle gear 42, and is transmitted to the fork gear 6 via the rewinding idle gear train 5 on the cartridge storage chamber 3 to rotate the fork 7. Furthermore, the signal is transmitted to the spool 15 from the middle of the gear train 23 via idle gears 44 and 45 to a gear portion 15c formed at the lower end of the spool 15. At this time, the gear ratio is made smaller than that of the sprocket transmission system so that the rotational speed becomes faster. On the other hand, the output of the gear 27 is transmitted to the rack part 8b of the storage table 8, and the storage table 8 is moved back and forth. make it slide.

28 is a locking lever that locks either the ratchet portion 25c of the gear 25 or the ratchet portion 27a of the gear 27; the upper claw 28a locks the ratchet portion 25c, and the lower claw 2
8b each locks the ratchet portion 27a, and has a lever portion 28d in which a recess 28e is formed, and the lever portion 2
8d has a downwardly directed convex portion 28f at the tip thereof, and the shaft hole 28
It is pivotally mounted to rotate around the center and is urged to rotate clockwise in FIG. 5 by a spring 30. A detection lever 29 detects the storage state of the cartridge storage chamber 3 with a detection portion 29a, and is biased by a spring 31 to rotate clockwise in FIG. 5 about the shaft hole 29b. Also, due to this biasing force, the other end 29c is in contact with the lever part 28d of the locking lever 28 when the cartridge storage chamber 3 is not in the storage position, and is engaged by the recess 28e when it is in the storage position. It is in a stopped state. Reference numeral 32 designates a base plate cover for holding down the aforementioned gear and lever, and a hole 32a fits into the outer periphery 15b of the spool 15. Reference numeral 33 denotes a base plate, which includes the aforementioned gear and lever shafts, the guide bin 33a of the storage stand 8, a convex portion 33b for releasing the engagement between the claw 3e of the cartridge storage chamber 3 and the tip end 8e of the storage stand 8, etc. have.

FIG. 4 is a perspective view showing the camera of the present invention in different operating states when viewed from the rear, and FIG.
Figure (b) shows a state in which the cartridge storage chamber 3 is protruded outside the camera and a film cartridge can be loaded, and Figure (c) shows a state in which the film cartridge is inserted into the opening 3a.
After loading, store the cartridge storage chamber 3 and place the film la.
The end of the frame protrudes out of the camera, indicating that empty rewinding is about to begin.

FIG. 5 is a plan view showing the clutch switching state between the storage table 8 for moving the cartridge storage chamber 3 and the planetary gear mechanism consisting of gears 24, 25, and 26, and FIG. In the state diagram, the planetary gear mechanism is in the film feeding state. That is, the claw 28b of the locking lever 28
Since the three gears 26 engage with the ratchet portions 27a of No. 7 and prevent the rotation of the gear 27, the three gears 26 revolve and rotate the gear 25. FIG. 2B shows a state in which the cartridge storage chamber 3 is projected to the outside of the camera, and the planetary gear mechanism is in a driving state of the storage base 8. That is, the claw 28a of the locking lever 28 is now engaged with the ratchet portion 25c of the gear 25, preventing rotation of the gear 25, so the driving force of the motor 21 is transmitted to the gear 27.

FIG. 6 is a side view showing the relationship between the cartridge storage chamber 3 and the storage stand 8. FIG. 6(a) shows the stored state of the cartridge storage chamber 3, and FIG. The same figure (c) shows the state in which the camera and the camera are moved together to the rear side of the camera.
moves further leftward from the state shown in figure (b) and reaches base plate 3.
The claw 3e is pushed to the right by the convex portion 33b of No. 3, so that it is released from the distal end 8e of the storage stand 8, and is tilted by the angle α by the torsion spring 10 (Fig. 2). ing.

Fig. 7 is a sectional view showing the film leading edge and perforation detection mechanism, and Fig. 7 (a) shows the state at the start of idle rewinding when the cartridge storage chamber 3 is stored and the end of the film Ia protrudes outside the camera. , Figure (b) shows a state in which the leading edge of the film Ia is out of the optical path of the film detection mechanism during empty rewinding, and Figure (C) shows a state in which the leading edge of the film la is detected and the motor is turned off after a certain period of time has passed after the leading edge of the film la is detected. 21 is stopped, that is, a state in which idle winding is about to start; FIG. Here, the reason why the prisms 34 and 35 are arranged on both sides of the film la passage is to reduce the size of the prism 34 attached to the cartridge storage chamber 3, which is a movable part. This is also to prevent electrically mounted components from being placed in the cartridge storage chamber 3.

FIG. 8 is an enlarged view of the main part of the film detection mechanism shown in FIG. 7, and FIGS. 8(a) and 8(b) show the opening 53a of the mask 53 from the infrared light emitting diode 51 during idle rewinding.
The infrared light that has passed through the film Ia passes through the perforations of the prism 35. 34, the phototransistor 52 receives light and generates a "bright"signal;
The infrared light is blocked by the film 1a and the phototransistor 5
2 shows the case where no light is received and the state is dark J. Further, (c) and (d) of the same figure show the case where the film la generates the above-mentioned "bright" and "dark" signals, respectively, when it is idly wound or in a normal winding state.

In addition, an infrared light emitting diode 51 and a phototransistor 52
are disposed at positions perpendicular to the moving direction of the film Ia, and the interval between them is a multiple of the perforation pitch of the film Ia, so that the infrared light emitting diode 51
The infrared light from the film 1 passes through prisms 34 and 35.
The light passes through the perforation a twice and enters the phototransistor 52.

FIG. 9 shows a side view of the film fall prevention mechanism, and FIG. 10 shows a plan view of the film cartridge. Figure 9 (
In a), the tip of the film la is prevented from falling into an aperture (not shown) during empty winding by the fall prevention plate 17, and point P on the lower side of the film la is still at the detection part 20a of the film detection lever 20 at this time. has not been reached. FIG. 9(b) shows a normal feeding state. That is, the film detection lever 20 is rotated clockwise by the film la against a spring (not shown), and the fall prevention plate 17 is rotated counterclockwise via the drive lever 19 shown by the broken line, thereby removing the film from the photographing optical path. It has been evacuated.

FIG. 11 is a sectional view of a planetary gear mechanism that transmits the output of the motor 21 to the storage table 3 or the film feeding system, and which is combined with the locking lever 28 to constitute a clutch switching mechanism.

FIG. 12 is a cross-sectional view showing the relationship between the main body 13 and the rear lid 11.
By inserting this, a tunnel amount for the film la to pass is secured between the inner rail 13a of the main body 13 and the flat surface 11c of the rear lid 11 (FIG. 2).

FIG. 13 is a sectional view showing a conventional example corresponding to FIG. 12, in which 61 is a main body, 61a is an inner rail, 61b is an outer rail, and 62 is a pressure plate biased rightward in the figure by a pressure plate spring 63. , 64 is a back cover, and the pressure plate 62 is connected to the outer rail 61b.
By pressing the inner rail 6 of the pressure plate 62 and the main body 61
A sufficient amount of tunnel is secured between 1a and 1a. In the case of such a conventional example, the pressure plate 6 resists the pressure plate spring 63 due to the curling of the film 1a during the empty winding of the film 1a.
2 may be pushed away, and the film 1a may protrude from the outer rail 61b that regulates the width direction of the film 1a. In this case, even if the film la reaches the spool 15, it will not engage with the claw 15d, and there is a high possibility that loading will fail. On the other hand, in the case of the mechanism shown in Fig. 12,
In addition to eliminating the pressure plate and pressure plate spring, the rear cover 11 is fixed to the main body 13, and since the outer rail lla protrudes from the rear cover 11 side, the film Ia is placed between it and the recess 13b of the main body 13. (, film l)
This is why the probability of successful loading is extremely high without compromising the regulation in the width direction of a.

FIG. 14 is a block circuit diagram of the camera of the present invention. In the figure, 71 is a central processing circuit that processes signals from the photointerrupter signal processing circuits 73 and 74, and causes the motor drive circuit 72 to energize the motor 2I. issue a command. That is, the light reception information of the phototransistor 52 is inputted to the photointerrupter signal processing circuit 73 and then inputted to the central processing circuit 71, where it is processed and inputted to the motor drive circuit 72. Based on this, motor 2
1 is energized. On the other hand, information from the photo-interrupter 43 is also processed by the photo-interrupter signal processing circuit 74 and then processed by the central processing circuit 63.
2 is input. Based on this, the motor 21 is energized to drive the cartridge storage chamber.

FIG. 15 is a flowchart of the central processing circuit for the cartridge storage chamber opening/closing sequence, the film empty rewinding sequence, and the empty film winding sequence, and FIG. 16 is a timing chart in which A indicates the energization of the motor 21, and B and C indicate the timing chart. D and E respectively show the output and input of the photointerrupter for detecting the position of the cartridge storage chamber, and D and E show the timing of light emission from the infrared light emitting diode 51 and light reception from the phototransistor 52, which are used to detect the film leading edge and perforations, respectively. .

The flowchart shown in FIG. 15 will be explained below.

First, at #l, it is determined by the switch 54 whether the cartridge storage chamber 3 is in the protruding state or in the retracted state.

Here, if the switch 54 is OFF, it is in the protruding state.

If it is ON, the state of the switch 55 interlocked with clutch switching is further checked in #2, and if it is ON, energization of the motor 21 in the forward direction is started in #3.

In #4, the photo ink printer 43 counts the light and dark pattern 3h of the cartridge storage chamber 3, and when the count reaches M in #5, the motor 21 is stopped in #6.

At this point, the cartridge storage chamber 3 is in a protruding state and rotated by the torsion spring IO, so that the switch 54 is turned off. Load the film cartridge 1 or leave it empty and push it against the torsion spring IO into the cartridge storage chamber 3.
When pressed, the switch 54 turns ON with #7, reverse energization is started to the motor 21 with #8, and storage of the cartridge storage chamber 3 is started, and with #9, the light and dark pattern 3h is changed to the photo interrupter 4.
3, and when the #lO count reaches M, reverse energization to the motor 21 is stopped at #lO, the cartridge chamber 3 is retracted, and at the same time the switch 55 is set to OFFFL and the clutch is switched.

Next, when the switch 54 is ON and the switch 55 is OFF, the motor 21 is reversely energized at #12, and the film la is rewound. In #13 to #15, if the count based on the light reception signal of the phototransistor 52 is O even after a certain time T, the reverse current to the motor 21 is stopped, and in #16, the reverse current to the motor 21 is stopped. Turn on electricity. #17~#19
, the perforation count is 1 (or 2).
), immediately stop energizing the motor 21 in the forward direction, and then energize the motor 21 in the reverse direction again at #12. As shown in #20, when counting is started and the count interval, that is, the perforation movement time Δt becomes longer than the predetermined time T2, it is assumed that the leading edge of the film 1a has been detected, and the motor 21 is activated in #21. Stops reverse energization to and ends idle rewinding. Immediately, the motor 21 starts to be energized in the forward direction at #22, and the predetermined number of perforations required for dry winding is counted at #23, #24, and then the energization to the motor 2I is stopped at #25. Dry winding ends. Thereafter, each time the release is performed in #26, the AF and AE mechanisms (not shown) are activated in #27, and then the motor 21 is energized in #28 and as the film la is wound, #29. When the perforation count reaches 8 in #30, the process of stopping the energization to the motor 21 in #31 is repeated.

Next, the operation of the autoloading mechanism of this embodiment will be explained. First, from the state in which the cartridge storage chamber 3 shown in Figure 4 (a, ) is stored, press the release knob (
(not shown) on the convex portion 28f at the tip of the lever part 28d of the locking lever 28, and the locking lever 28 is inserted into the shaft hole 28c.
5(a) in the direction of arrow A in FIG. 5(a) against the spring 30. Then, the lever portion 28d moves to the position shown by the dashed line, turning on the switch 55 and causing the motor 21 to start normal rotation. This rotation is transmitted through the gear train 23 so as to rotate the large gear 24a of the gear 24 in a counterclockwise direction. Since the small gear 24b of the gear 24 meshes with the three gears 26, the gears 26 are rotated clockwise. At this time, the ratchet portion 25c of the gear 25 having the shaft 25b of the gear 26 is locked by one pawl 28a of the locking lever 28, as shown in FIG. 5(b), so the three gears 26 are It rotates without orbiting, so 3
A gear 27 that meshes with two gears 26 and its internal teeth 27c
rotates clockwise and moves the storage stand 8 in the direction of arrow B in FIG.
slide in the direction. When the storage table 8 starts sliding, the detection lever 29 that was in contact with the end 8e of the storage table 8
is rotated clockwise by the biasing force of the spring 31, and one end 29c of the locking lever 28 comes into contact with the lever part 28d of the locking lever 28, so that even if the release knob (not shown) is released, one end of the locking lever 28 remains closed. The pawl 28a is connected to the ratchet portion 25 of the gear 25.
C, the storage table 8 continues to move in the direction of arrow B due to the clockwise rotation of the gear 27.

Slide the specified amount regulated by the guide hole 8C (
Fig. 6(b)) and the claw 3e on the bottom of the cartridge storage chamber 3.
comes into contact with the convex portion 33b provided on the main plate 33, and the storage stand 8
The lock is released. At the same time, the motor 21 is stopped after the photo interrupter 43 has counted a predetermined number M of the light and dark patterns 3h of the cartridge storage chamber 3. Further, the spring 10 rotates counterclockwise around the shaft 9, and the slope 34 (FIG. 2) of the cartridge storage chamber 3 comes into contact with the inner surface of the upper wall of the main body 13, and the cartridge storage chamber 3
The entire opening 3a is in an open state. This rotation of the cartridge storage chamber 3 turns off the switch 54. That is, this state as shown in FIG. 4(b) and FIG. 6(c) is a state in which the cartridge 1 can be loaded. In this state, load the cartridge 1 into the opening 3a of the cartridge storage chamber 3 from above (Fig. 1), and press the torsion spring 10.
When the back surface 3b is pressed so that the cartridge storage chamber 3 rotates clockwise against the rotational force, the switch 54 is turned on and the motor 21 starts rotating in reverse. At this time, one claw 28 of the locking lever 28 is detected by the detection lever 29.
a remains engaged with the ratchet 25c of the gear 25, so as the motor 21 reverses, the storage table 8 moves to the rack portion 8.
b in the direction of arrow C in Fig. 5, and insert the guide hole 8c.
Slide the photo interrupter 3 by a predetermined amount regulated by
2 sets the light and dark pattern 3h of the patrone storage room 3 to a predetermined number M
After counting, the motor 21 is stopped. At the same time, the tip of the storage stand 8 comes into contact with the detection part 29a of the detection lever 29, and the detection lever
Rotate 9 counterclockwise. As a result, the end portion 29c slides on the side surface of the lever portion 28d of the locking lever portion 28 and attempts to fall into the recess 28e. At this time, due to the biasing force of the spring 30, the locking lever locks the detection lever 29 in such a manner that it grips the end 29c in its mouth. With this operation, one pawl 28a of the locking lever 28 that had previously locked the ratchet portion 25c of the gear 25 is unlocked, and conversely, the other pawl 28b locks the ratchet portion 27c of the gear 27. The transition from the operable state of the cartridge storage chamber 3 to the film winding and rewinding operable state is completed.

Now, the switch 55 is turned OFF due to the movement of the detection lever 29.
It becomes F. Based on this information and information from the photointerrupter signal circuit 74 from the photointerrupter 43, the motor drive circuit 7
2, energization to the motor 21 is started and the pinion 22
The output is transmitted to the small gear 24b of the gear 24 via the gear train 23. At this time, the gear 27 is connected to its ratchet portion 27a.
The gear 24 is locked by the claw 28b of the locking claw 28.
By rotating the small gear 24b in the counterclockwise direction, the three gears 2
6 revolves counterclockwise while rotating clockwise, causing the gear 25 to rotate counterclockwise. This is idle gear 4
2, an idle gear train 5 for rewinding, and a fork gear 6, the fork 7 is rotated counterclockwise to start rewinding the film la onto the cartridge l.

FIG. 7(a) shows this state, in which the film 1a is rewound through a film passage consisting of the cartridge storage chamber 3 and the rear lid 11. At this time, the output of gear 25 is the idle gear 38. Although it is transmitted to the one-way clutch gear 39, it is not transmitted to the sprocket rotating shaft 40 due to the one-way clutch mechanism and is in a free state, so the film 1
As the unwinding of the sprocket 41 progresses, the upper and lower teeth of the sprocket 41 fall into the perforations of the film la and are rotated counterclockwise by the film la. In this way, the sprocket 41 rotates freely and the fork 7
The film 1a is rewound in the cartridge 1 by
In the state shown in FIG. 7(b), when the leading edge of the film la is detected by the film leading edge and perforation detection mechanism, the motor 21 is stopped after a certain period of time has elapsed, and as shown in FIG. 7(C)-
becomes the state of At this time, the patrone, storage chamber roller 4a
When the film 1a passes through, it comes into contact with the rear lid 11 due to the spring force of the support portion, and serves to shield this portion from light.

Further, as mentioned above, the teeth of the sprocket 41 are formed by the film l.
The motor 21 is inserted into the perforation a.
When current is started in the positive direction, the sprocket 41 rotates clockwise via the above-mentioned transmission mechanism and begins to wind up the film 1a as shown in FIG. 7(d). The tip of the film la is regulated in its vertical direction by the upper and lower outer rails Ila of the rear lid 11, and forms a flat surface sandwiched between the surface of the inner rail 1.3a of the main body 13 and the upper and lower outer rails Ila of the rear lid 11. 11c. Further, since the width of the leading end of the film la is narrow, a fall prevention mechanism is provided to prevent the leading end of the film la from being caught on the end of the aperture of the main body 13 on the spool chamber side. Referring to FIG. 9, FIG. 9(a) shows a state in which the leading edge of the film 1a is depressed, and the leading edge of the film 1a rides on the falling prevention plate 17.

At this time, the P portion of the film la (FIG. 1O) has not reached the film detection portion 20a of the film detection member 20.
As the film 1a is further wound up, the P portion rides on the film detection portion 20a of the film detection member 20, so that it rotates clockwise about the hole 20b against the biasing force of a spring (not shown). Accordingly, the drive lever 19 has its cylindrical portion 19d located at the opening 2 of the fill person detection member 20.
The inner end surface of 0a starts to rotate counterclockwise about the shaft 19b. The fall prevention plate 17 is the drive lever 19
Since it moves in unison with the other parts, it begins to rotate counterclockwise in the same way.

However, at this time, the leading edge of the film 1a has already climbed onto the fall prevention plate 17, and the film 1a can be guided into the spool chamber of the main body 13. Furthermore, the fall prevention plate 17 shown in FIG. 9(b) is retracted to a position where it does not block the light beam during photographing.

The tip of the film 1a is guided into the spool chamber, and the spool 1
Since the rotation speed of the spool 15 is set to be faster than the rotation speed of the sprocket 41 when the perforation is caught by the pawl 1.5d of 5, the film la is pulled by the spool 15 faster than the rotation by the one-way clutch gear 39. The rotation by the one-way clutch gear 39 is faster, and the power transmitted by the one-way clutch gear 39 is no longer transmitted to the rotating shaft 40. Therefore, the sprocket 41 that rotates as one is also in a free state, and the film la is thereafter wound up by the spool 15. It turns out.

When the film leading edge and perforation detection mechanism counts a predetermined number N of perforations on the film 1a, the motor 21 is stopped and the empty winding of the film 1a ends. Thereafter, the film is wound up in conjunction with the release operation, and the leading edge of the film and the perforation detection mechanism count 8 perforations to advance one frame.

Next, the film leading edge and perforation detection mechanism will be explained in detail. In FIG. 8, 5I is an infrared light emitting diode, 52 is a phototransistor, and is located at the height of the perforation above the film la of the main body 13.
And they are arranged at intervals that are an integral multiple of the perforation pitch.

A mask 53 is placed in front of the infrared light emitting diode 51 and the phototransistor 52, and has openings 53a and 53b at corresponding positions. When the infrared light emitted from the infrared light emitting diode 51 is not blocked by the film la, the prism 35.
Light enters the phototransistor 52 as indicated by the arrow shown in (c).

Now, if we consider the case of FIG. 8(a), that is, when the part of the film 1a that is exposed outside the camera is being rewound without rewinding, the infrared light from the infrared light emitting diode 51 is first emitted by the prism 35. The light changes its course twice, passes through the perforation of the film la, and enters the prism 34, where it reaches 180
'Turn around and leave.

Here, since the prism 34 is designed such that the center pitch of light input and light output corresponds to the pitch of the perforations, the light coming out of the prism 34 passes through the perforations of the film la, penetrates the prism 35, and passes through the phototransistor 52. sunlight enters.

This state is called "bright".

Next, if we consider a state in which the film 1a has moved by a half pitch of the perforations as shown in FIG. The light attempts to enter the prism 34, but is blocked by the film la in front of it. Therefore, no light enters the phototransistor 52, and this state is called "dark."

Furthermore, when the film 1a moves by the half pitch of the perforations, the state shown in FIG.
It becomes a "bright" state when light enters the light.

Furthermore, the infrared light emitting diode 51 emits light in synchronization with the energization of the motor 21. In the state shown in FIG. 7 (b), that is, in the state where the leading end of the film la is just removed from the prism 34 when it is unwound, the phototransistor 52 receives the above-mentioned "bright", "dark", "dark", and "bright J" signals. ...
``Brightness'' continues to enter from the repetition of . If this state continues for a certain number of seconds or more, it is determined that the leading edge of the film la has been detected, and when the power to the motor 21 is stopped after a certain period of time has elapsed since the last rFIIJ, the state shown in FIG. 7(c) is reached. From this state, dry winding is performed by energizing the motor 2I in the opposite direction. When the motor 2] is energized, the infrared light emitting diode 5] emits light, and the phototransistor 52 repeats the "bright" and "dark" states based on the above-mentioned principle. The energization is stopped and the dry winding ends. After this, the film la is wound based on the release operation, and the motor 21 is operated to count 8 perforations corresponding to one frame of the film, that is, 8 times "bright" and "dark" or "dark" and "bright". energization and de-energization will be carried out.

Now, the telescope that shields the exit of the film Ia of the cartridge 1 from light is flocked so as to fit in the winding direction of the film la. Therefore, when rewinding the film into the cartridge from the beginning, i.e., performing empty rewind, depending on the film, the hairs of the television may get stuck in the perforations, increasing the load on rewinding, and in some cases, rewinding may not be possible. .

Therefore, as a countermeasure, if the film tip and the perforation detection mechanism cannot confirm the movement of the perforations within a certain number of seconds after the start of energization to the motor 21, the reverse energization is immediately stopped for a certain number of seconds after the energization to the motor 21 is stopped. At the same time, the film 1a is fed out by one or two perforations in the winding direction by rotation of the sprocket 41. Here, patrone storage chamber 3 and rear lid]
The film path formed by 1 and 1 is stepped for light shielding. Therefore, it is impossible to feed the film 1a outside the camera 2, and the film 1a is
As shown by the broken line in Figure Ca>, the rear cover 11 and sprocket 4
It will be sent out with a deflection between it and 1. Once the film 1a is pulled out from the cartridge 1 in this way, the perforation of the film Ia and the hair flocking of the television tape of the cartridge 1 are released, and then the motor 21 is energized in the rewinding direction again to unwind the film. Returning will now be done smoothly.

Incidentally, in the above embodiment, film feeding using a sprocket was explained, but the first film feeding without using the sprocket 41 was explained.
As shown in FIG. 9, a pressing roller 48 and a pinch roller 49 having an elastic member such as rubber wrapped around the pressing roller 49 and a pinch roller 49 may be used. At this time, a step is provided in the pressure roller 48 and the pinch roller 49 rotatably attached to the cartridge storage chamber 3 to press only the vicinity of the barf ore rayon of the film la and not to damage the photographing screen area. (
This is desirable. Further, like the sprocket 41 of the above embodiment, this pressure roller 48 also has a one-way clutch mechanism in the middle, and when the tip of the film 1a engages with the pawl 15d of the spool 15, the rotational speed of the spool is faster. The pressure roller 48 becomes free.

Therefore, it becomes free even when rewinding.

Furthermore, the position detection of the cartridge storage chamber 3 may be performed by contact detection using a contactor instead of non-contact detection using a photointerrupter.

The roller unit 4, which also serves to shield the film path between the rear lid 11 and the cartridge storage chamber 3, has a separate roller 4a as shown in FIG.
As shown in Figure 1, the roller part 4a' is connected to the roller unit 4.
By integrally molding the roller part 4a with a finish having good sliding properties, the roller part 4a may be made of resin or a metal plate so that it does not rotate but has elasticity.

Furthermore, although two prisms are used in the film tip and perforation detection mechanism of the above embodiment,
As shown in FIG. 18, extending the cartridge storage chamber 3 increases the size of the cartridge storage chamber 3, which is a movable part.
By changing the position and size of the prism 47 to correspond to the pitch of the infrared light emitting diode 51 and the phototransistor 52, the prism 35 described above becomes unnecessary, so the design can be improved.
Either one can be selected from the viewpoint of cost.

Regarding the structure of the rear lid 1.1, as shown in FIG. 22, from the viewpoint of the flatness and strength of the flat surface 11c, a method may be adopted in which the metal plate 53 is fixed to the flat surface 11c. Also. From the viewpoint of strength, the flat surface 11c needs to be thick to some extent, but it does not cause sink marks or gloss during molding.

If unevenness is a problem, the above-mentioned problems in terms of strength and molding can be solved by forming a plurality of ribs llc in a protruding manner as shown in FIG.

Furthermore, in the embodiment, a convex outer rail ll is provided on the rear cover 11.
a, a recess 13b into which the outer rail lla fits into the main body 13;
However, on the contrary, there is a recess in the rear lid.

A similar effect can be obtained by forming a convex portion on the main body.

In addition to the above-mentioned method, in addition to the above-mentioned method, when the cartridge storage chamber 3 is stored in the camera 2, the motor 21 is energized in the winding direction prior to unwinding the sprocket. 41 feeds the film Ia by 1 to 2 perforations (the state shown by the broken line in FIG. It is also possible to smoothly unwind by energizing the cartridge.The sequence of the central processing circuit in this case will be explained based on the flowchart in Fig. 17. Since the operation of the chamber 3 is the same as the sequence shown in FIG. 15 described above, the explanation will be omitted and will be explained from the state where the switch 55 is OFF.

First, at #5I, prior to empty rewinding, forward current energization is started in the winding direction, that is, in the motor 2. Next, in #52, the perforations are counted, and when the count reaches 1 (or 2) in #53, the power supply to the motor 21 is stopped in #54. Thereafter, the motor 21 is immediately reverse energized at #55, and @56. In #57, the perforations are counted, and if the count interval, that is, the movement time Δt of the perforations, is longer than the predetermined time T2 (
When this happens, it is assumed that the leading edge of the film 1a has been detected, and the reverse current supply to the motor 21 is stopped in step #58, thereby ending the idle rewinding. Immediately, the motor 21 starts to be energized in the positive direction at #59, and at #60. When counting the predetermined number N of perforations required for empty winding in #61, #
At step 62, the power supply to the motor 21 is stopped, and the idle winding is completed. Further, for each release of #63, after the AF and AE mechanisms (not shown) are activated in #64, the motor 21 is activated in #65.
When the number of perforations reaches 8 as the film la is wound at #66 and #67, the power to the motor 21 is stopped at #68.

〔Effect of the invention〕

As explained above, according to the present invention, when loading film, the cartridge storage chamber is configured to protrude to the outside of the camera while sliding approximately at right angles to the film running direction, and the cartridge storage chamber Since the chamber is inclined at a predetermined angle with respect to the film surface during film feeding, at least when the chamber is in its maximum protruding state, it becomes possible to easily load the film as if it were a cassette.

Further, since the motor for driving the cartridge storage chamber is also used as the motor for feeding the film, it is possible to realize a camera with a simple loading method at low cost.

[Brief explanation of drawings]

Figure 1 is a schematic perspective view of the camera of the present invention, Figures 2 and 3 are
The figure is an exploded perspective view showing the main components of the camera of the present invention, Figures 4(a) to (C) are perspective views showing the camera of the present invention in different operating states as seen from the rear, Figure 5(a), (b)
6 is a plan view showing clutch switching states between the storage stand and the planetary gear mechanism in different operating states, and FIGS. 6(a) to (C) are side views showing the relationship between the cartridge storage chamber and the storage stand in different operating states. 7(a) to 7(d) are sectional views showing the film tip and perforation detection mechanism showing different operating states, and FIGS. 8(a) to 7(d) are sectional views showing different operating states. Enlarged view of the main part of Figure 9 (a), (b
) is a side view of the film fall prevention mechanism showing different operating states, Figure 10 is a plan view of the film cartridge with part of the film pulled out, and Figure 11 is a diagram showing the transmission of the motor output to the storage stand or film feeding system. 12 is a sectional view showing the relationship between the main body and the rear cover, FIG. 13 is a sectional view showing a conventional example corresponding to FIG.
4 is a camera block circuit diagram of the present invention, FIG. 15 is a flowchart of the sequence of the present invention, FIG. 16 is a timing chart corresponding to the flowchart of FIG. 15, and a sectional view showing another embodiment of the perforation detection mechanism. ,
FIG. 19 is a sectional view showing another embodiment of the film feeding mechanism, FIG. 20 is a perspective view of a roller unit of the present invention, FIG. 21 is a view similar to FIG. 20 showing another embodiment, and FIG.
FIG. 23 is a sectional view showing the relationship between the main body and the rear cover according to another embodiment of the present invention, and FIG. 23 is a sectional view showing the relationship between the main body and the rear cover according to still another embodiment of the present invention. l・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・Film patrone la ・・・・
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・・・・・・・・・・・・・・・・・・Film 2・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・Camera 3・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・Patrone storage room 8・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・Storage stand 21 ・ ・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・Motor Diagram 4 (Ku)! ! 3≦)5 Fig. 4 (b) Fig. 4 (C) Fig. 5 (b) Fig. 5 (ku) Otokozu (, 宲3woδ Taratawot (O) / ; ) Ab5'3 (b ) (a (b') 2θ dobb //C //(1 //C //!

Claims (6)

[Claims] (1) It has a storage section that stores a film cartridge, and a cartridge storage chamber that can protrude to the outside of the camera. After loading the film cartridge into the protruding cartridge storage chamber, the cartridge storage chamber is stored inside the camera. Then, in a camera configured so that the film pulled out from the film cartridge automatically crosses the aperture of the camera and is unwinded, when the cartridge storage chamber protrudes outside the camera, the film is moved in the film running direction. On the other hand, the camera is characterized in that it slides approximately at right angles. (2) The cartridge storage chamber is characterized in that when it projects to the outside of the camera, it has an inclination of a predetermined angle with respect to the film surface during film feeding, at least when it is in its maximum protrusion state. The camera according to claim (1). (3) The camera according to claim 1 or 2, wherein the cartridge storage chamber has an opening into which a film cartridge is inserted. (4) It has a storage section for storing a film cartridge, and a cartridge storage chamber that can protrude to the outside of the camera, and after loading the film cartridge into the protruding cartridge storage chamber, the cartridge storage chamber is stored inside the camera. Then, in a camera configured such that the film pulled out from the film cartridge is automatically wound across the aperture in the camera, the cartridge storage chamber is driven by also serving as a motor for feeding the film. A camera characterized in that the camera is rotatably supported on a storage stand. (5) The camera according to claim 4, wherein the motor is switched between film feeding and storage table driving by switching between revolution and rotation of a planetary gear. (6) When the cartridge storage chamber is stored in the camera, it engages with the storage base, and when it projects outside the camera, it disengages from the storage base at least when it is in its maximum protrusion state. Claim (4) characterized in that:
Camera listed.