JPH03290638A - Camera - Google Patents

Abstract

PURPOSE:To prevent a film cartridge from falling by opening a cover by providing a locking means for regulating the opening action of the cover when the entrance of a cartridge chamber turns downward. CONSTITUTION:A weight 37 is attached to one end of a gravity actuation lever 36 so that it may fall in the direction of gravity preferantially to the other end. When the end on the weight 37 side falls in the erected state of a camera body, the other end rises on the contrary and abuts on one end of a locking pawl 30 so as to lock the movement that the locking pawl 30 is going to release the engagement of the cover 10 with a hook 29. Therefore, when the entrance of the cartridge chamber turns upward in a state where the cover 10 is closed, the locking of the cover 10 is released, and the film cartridge 9 is prevented from falling as soon as the cover 10 is opened, because the locking is performed in a state where the cover 10 is closed when the entrance turns downward.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a camera using a film cartridge, and particularly to a camera in which the film cartridge is inserted and removed by inserting and removing the film cartridge along the axial direction of the spool.

[Prior art and problems to be solved by the invention]

For example, in a camera that automatically performs the initial lobe infrastructure for film, when loading film, you can simply insert the film container into the camera and pull out the leading end of the film from the film container, such as a film cartridge or film cartridge. There is something. In most of these cameras, particularly those of the type in which a film container, such as a film cartridge, is inserted and removed along the axial direction of the spool, the lid of the cartridge chamber is formed on the bottom surface of the camera body. Therefore, when taking out the film, turn the camera upside down to prevent the film from falling out when you open the lid, open the lid, then tilt the camera back up again, and open the film cartridge 2. It is removed by sliding it out of the cartridge chamber. Alternatively, in the case of a slightly higher-end camera, an eject mechanism is installed in the cartridge chamber so that when the camera is turned upside down and the lid is opened, part of the bottom of the film cartridge protrudes from the cartridge chamber. In some cases, the ejection mechanism is configured to act on the ejection mechanism. By the way, when taking out a film cartridge from the cartridge chamber as described above, unless the opening of the cartridge chamber is faced upward before opening the lid, there is a risk that the cartridge will be dropped as soon as the lid is opened. Therefore, it is preferable that the film cartridge be constructed so that the user always opens the film cartridge with the lid facing upward when removing the film cartridge. The present invention has been devised in view of the above-mentioned technical problem regarding the structure for taking out the film cartridge/discharge, and to effectively solve the problem. Therefore, the object of the present invention is to provide a camera in which the lid of the cartridge chamber cannot be opened unless the cartridge entrance/exit is oriented upward when removing the film cartridge.

[Means to solve the problem]

The camera according to the present invention has the following configuration in order to solve the above technical problems and achieve the objective. That is, a cart loading chamber into which a film cartridge in which photographic film is wound around a spool and stored in a light-shielded state is inserted and removed in a direction along the axis of the spool, and a lid body which opens and closes an entrance to the cartridge chamber. The camera is provided with a locking means for restricting the opening operation of the lid body by having the entrance/exit of the cartridge chamber facing downward. The entrance and exit of the cartridge chamber is preferably provided on the bottom side of the camera body. Further, the locking means may be constituted by a lever member whose central portion is rotatably supported and has a weight at one end.

[Action and effects of the invention]

In the camera according to the present invention, when the entrance/exit of the cartridge chamber faces upward with the lid closed, the locking means releases the lid. Further, when the entrance/exit is turned downward, the locking means locks the lid in the closed state. When taking out a film cartridge, the entrance to the cartridge chamber is always facing upward when the lid is open, so there is no fear that the cartridge will fall out as soon as the lid is opened. When this locking means is constituted by a lever member having a weight at one end, the position of the lever member changes depending on whether the entrance/exit of the cartridge chamber is facing downward or facing upward. That is, the weight side end rotates around the pivot point according to gravity when the entrance and exit are in the downward and upward states, respectively. When the entrance/exit is facing downward, the end opposite to the weight side is in a position to restrict the opening operation of the lid, and when the entrance/exit is facing upward, the end is in a position that allows the opening operation of the lid.

【Example】

The camera of this embodiment can record various photographic information on the film as a magnetic tape, and is equipped with an autoloading mechanism that automatically performs initial loading of the film. This camera uses a thrust-type film cartridge that can push out film so that it can be automatically loaded, as will be described in detail later. The film also has a magnetic surface for writing various magnetic tapes, and the magnetic surface is formed on the back side of the film. The camera itself uses a pre-wind system and is equipped with a magnetic head to read magnetic data from the film during pre-wind. The magnetic head is placed on the back side of the film at a distance from the film surface, and a pad is placed on the front side of the film to bring the film into contact with the magnetic field when writing and reading magnetic data. The pad is controlled to move into and out of contact with the film surface as necessary. Furthermore, the camera of this embodiment employs a pseudo zooming system. This pseudo-zooming 7 stem is a system for cropping the screen to an angle of view that makes it appear as if zoom shooting was performed when printing a photograph.The cropping information is written onto the film using a magnetic head at the time of photography. It is a system to keep it. This magnetic node is connected to the magnetic field for reading magnetic data during prewind.1. It is also used as In the pseudo-zooming system, the Norinter optical system includes a zooming mechanism so that the photographer can recognize the angle of view of the finished photograph from the image in the finder. FIG. 1 shows the appearance of an embodiment of a magnetic data recording camera according to the present invention. A lens barrel 2 that holds a photographic lens 1 is located roughly in the center of the front of the camera body, and above it is a finder window 3.
or are placed. A light emitting window 4 and a light receiving window 5 for distance measurement are provided on both sides of the finder window 3. 6 is a light emitting part of a flash built into the camera body. A grip projection 7 is formed on the front surface of the camera body on the side opposite to the flash 6, and a release button 8 is arranged on the upper end surface of the camera body on the side of the grip. Gri,. There is a film car (film car) at the bottom end of the camera body on the
) Y/9 is provided with a lid 10 that is opened and closed when taking it in and out, and as shown in Fig. 2, the camera body is turned upside down, the lid 10 is opened, and the cart liner 9 is inserted and removed in the direction of its spool axis. can do. This lid 10 is formed to have a predetermined height dimension H, and when this lid 10 is opened with the cartridge 9 loaded, a portion of the cartridge 9 is exposed to the extent that it can be pinched with your fingers. . Therefore, an eject mechanism for ejecting the cartridge is not required. FIG. 3 shows the appearance of the film cartridge used in the camera of this embodiment. This film cartridge 9 is
The cartridge is a thrust type cartridge that can not only wind in a film (not shown) but also send it out by rotating the dispool 11, and is molded from a plastic material. In the vicinity of the film outlet 15, three reference surfaces 12, 13, and 14 are provided for positioning so that the attitude of the cartridge 9 is always constant when it is loaded into the camera. First reference plane 12
is formed on the side surface of the protrusion of the film outlet 15, and contributes to positioning the cartridge 9 in a direction parallel to the film surface. The second reference plane 13 is formed on the side surface of the cartridge 9, is adjacent to the first reference plane 12, and is perpendicular to the first reference plane, and is used to position the cartridge 9 in a direction perpendicular to the film surface. Contribute to The third reference surface 14 is one bottom surface of the cartridge 9, and contributes to positioning the cartridge 9 in a direction parallel to the axial direction of the spool 11. In addition, the film cartridge 9
The caning has an angular, partially protruding portion as shown, which forms a notch for displaying the film exposure index. FIG. 4 shows the cartridge chamber of the camera shown in FIG. 1, viewed from the bottom side of the camera body. Figure 5 is a cross-sectional view of the main parts taken along the lines ■-V and v'-v'' in Figure 4, viewed in the direction of the arrows, and Figure 6 is the −
■It is a sectional view taken along the line. The cartridge chamber 7 chamber 16 is shaped into a space with a shape approximately equal to the external appearance of the film cartridge non-9 shown in FIG. Plate springs 17 and 18 are installed. The first bearing surface 20 corresponding to and supporting the first reference surface 12 of the cartridge 9 is located at a position substantially facing the spring 17, and the second bearing surface 21 or the spring 18 is located at a position corresponding to the second reference surface 13. They are in a position where they are roughly facing each other. The resultant force of the biasing forces of the two springs 17.18 acting on the loaded cartridge 9 causes the first and second reference surfaces 12.13 of the cartridge 9 to move toward the first bearing surface 20, respectively.
and the second bearing surface 21 with approximately equal pressing force,
Moreover, since the positions of these two reference planes 12 and 13 are located very close to the film outlet 15, even if some torque is generated to rotate the cartridge 9, the positional deviation of the film outlet 15 can be tolerated. It can be suppressed to a small amount. With respect to the third reference surface 14, the bottom surface of the cartridge chamber 16 becomes the third support surface 22, and as shown in FIG. 6, a plate spring 19 for pressing the cartridge is attached to the inner surface of the lid 10. . A fork 23 that engages with and rotates the spool 11 of the cartridge 9 protrudes from approximately the center of the third support surface 22 . When the camera body is viewed in an inverted state as shown in FIG. 6, the fork 23 has a coil spring 24 in contact with its lower end and is biased in the axial direction from the bottom to the top. Therefore, fill spring 2
4 allows the vertical movement of the fork 23, and even if the cartridge spool 11 does not properly engage the fork 23 when the cartridge 9 is inserted into the cartridge chamber 16, the fork 23 will not move as shown in the figure. It is possible to escape downward as shown by the broken line, and it is also possible to close the lid 10. When the cartridge 9 is loaded, even if the engagement between the cartridge spool 11 and the fork 23 is incomplete, when the fork 23 is rotated by the drive gear 25 and the rotational position of the fork 23 with respect to the cartridge spool 11 becomes appropriate, coil spring 2
With the urging force of 4, the fork 23 returns to the normal position 11 and properly engages with the cartridge spool 11. Note that the drive gear 25 is connected to a winding gear system (not shown). Further, a contact piece 26 for detecting the rotational position of the drive gear 25 is fixed to the bottom surface of the drive gear 25. A rotational position detection SW board 27 is fixed at a position facing this, and the rotational position of the fork 23 is monitored by this contact piece 26 and the SW board 27. ilo is pivotally supported by the side wall 28 of the camera body,
It rotates around this point to perform opening and closing operations. A rubber material is pasted on one surface of the lid 10 extending from the grip protrusion 7, making it easier to open and close the lid 10. A hook 29 is formed on the rotating tip side of the lid lO. As clearly shown in FIG. 5, the camera body is provided with a lock claw 30 that engages and disengages from the hook 29 by moving in the thickness direction of the camera body.
These hooks 29 and lock pawls 30 work together to lock the lid lO in the closed state or release the lock. The lock claw 30 is biased by a lock spring 31 in a direction to lock the lid IO in the closed state. Also, this lock claw 3
0 is equipped with an elastic pawl locking arm 32, and when the lock pawl 30 is detached from the hook 29 and the lid 10 is opened, this pawl locking arm 32 engages with a portion 33 on the camera body side. The urging force of the lock spring 31 prevents the lock pawl 30 from returning to the engagement position with the hook 29. When the lid 10 is closed, the claw locking arm 32 is pushed down by a locking release rib 34 formed on a part of the lid 10 and is released from engagement with the camera body, and the biasing force of the lock spring 31 is released. This allows the lock pawl 30 to return to the engagement position with the hook 29. The lock claw 30 is
It is constructed integrally with a lid opening button 35 that is provided on the bottom surface of the camera body and can be operated from the outside, and the engagement between the lock pawl 30 and the hook 29 can be released by operating the lid opening button 35. The movement of the lock claw 30 in the disengagement direction is restrained by a gravity-operated lever 36, which will be described below, when the camera body is upright. The gravity-operated lever 36 is a lever that has a roughly "<" shape, and its -blade end C! A weight 37 is attached to give priority to the other edge of the blade and lower it in the direction of gravity. When the end on the weight 37 side is lowered with the camera body upright, the other end of the gravity-operated lever 36 rises and comes into contact with one end of the lock claw 30, causing the lock claw 30 to engage with the hook 29 of the lid 10. Listen as it moves in the direction of releasing the connection. Conversely, when the camera body is inverted, when the end on the weight 37 side falls in the direction of gravity, the other end separates from the locking claw 30, and the direction in which the locking claw 30 or the lid lO is disengaged from the hook 29. allow movement to. In other words, when the camera body is upright,
Even if I try to operate the lid opening button 35, it is locked.
The lid 10 cannot be opened by operating the lid opening button 35 unless the camera body is turned upside down. In other words, when the MIO is open, the camera body is in an inverted state, so the lid 1
The film cartridge 9 will not fall when the 0 is opened. 38 and 39 in FIG. 6 indicate the gravity-operated lever 36.
It is a stopper. Note that 40 shown in FIG. 5 is a contact piece for detecting the closed state of Mlo, and works in cooperation with a board (not shown) to determine whether the lock pawl 30 is in the open position or in the closed position. This is a contact piece for monitoring whether or not there is. The electric circuit of the camera of this embodiment will be explained below with reference to FIG. CP shown in the center of the figure indicates a microcomputer (hereinafter referred to as microcomputer) that controls the operation of this camera. FLS shown above the microcomputer CP is a flash control section, and controls the light emission operation of the flash 6 built into the camera body through the microcomputer CP. In addition, the L shown in the lower right of the flash control unit FLS
M and AP indicate a photometry section and a distance measurement section, respectively, which perform photometry and distance measurement according to commands from the microcomputer CP, and feed back the respective measurement data to the microcomputer CP. DS shown further below indicates a display control section, which controls the display of various data in a display window (not shown) provided on the camera body. The DTC shown below the microcomputer CP is a data control section connected to the magnetic head HD for processing photographic data for film. AC shown on the left side of the microcomputer CP is an actuator drive unit, which includes a first motor M1 for prewinding and winding the film and driving the magnetic head unit, and a second motor M for driving the viewfinder zooming mechanism. , and magnetically control the magnet Mg for holding the pad in the do portion in a charged state. EX/F illustrated below the actuator drive unit AC
Reference numeral C denotes an exposure focus control section, which controls the focusing of the photographing lens, the release of the shutter, and the operation of the third motor M that drives them. The EN shown further below is
This is a zoom encoder that detects the position of the optical system in the zooming mechanism of the finder. Zoom encoder EN
The PI shown below is a photointerrupter that detects perforations in the film. S illustrated below the display control section DS. From S. indicates various switches, and the camera operation is determined depending on the on/off states of these switches. So is a main switch, which turns on and off a main power source (not shown) that operates the camera when in the on state. S1 is a photometry switch that performs photometry when in the on state, and S is a release switch that performs shutter/release when in the on state. In the camera of this embodiment, the release button 8 (see Fig. 1) is configured to be a two-stage push type, and when the release button 8 is pressed to the first stage, the photometry switch S1 is turned on. Release switch S. or turns on. S3 is a zoom out switch that changes the pseudo zooming system from the tele side to the wide side.
S4 is a zoom-in switch that changes from the wide side to the telephoto side. The zooming mechanism of the finder is also driven by the switches S3 and S4. S5 is a lid switch, which closes the lid 1 of the cartridge chamber 16 (see Fig. 4).
0 (see FIG. 5) or is turned on, and the microcomputer CP (i'llI Mizuko's signal changes from high level to low level 2). Although details will be described later, S6 is a charge cam position detection switch that detects when the charge cam, which acts as an actuator for bringing the magnetic head (D) into contact with the film, is in its initial position. It turns on if it is in the initial position.S
7 is a hula corresponding to the on/off state. This is a flanone switch that controls the light emission on/off of the Juro (see Figure 1). S6 is a battery compartment (not shown)
This is a battery detection switch that turns on if there is a battery inside, and turns off if there is not. Next, a description will be given of the film feeding mechanism and the drive mechanism for the magnetic head' and pad, which perform the initial loading of the film, brewinding, and frame advance during photographing using the camera of this embodiment, together with their operations. FIGS. 8 and 9 are explanatory diagrams showing the main parts of the film feeding mechanism and the pad driving mechanism of the magnetic head section of the camera of this embodiment, divided into upper and lower parts and shown in a state during initial loading. In the camera of this embodiment, the first motor M serves both as the film feeding mechanism and the pad driving mechanism of the magnetic head section, and the first planetary gear mechanism 61 is employed as the switching mechanism. This first planetary gear mechanism 61 includes two sun gears 6 arranged on the same axis and rotating at the same time.
It is equipped with 2.63. One first sun gear 62 forms a pair with one first planetary gear 64 meshing with it, and the other second sun gear 63 is paired with two second planetary gears 65 and a third i! ! It is paired with Star Gear 66. The first planetary gear 64 revolves around the first sun gear 62 clockwise and counterclockwise as the first sun gear 62 rotates, and is connected to the winding gear 67 and the first charge gear 68 by the driving force of the first motor M. Switch the transmission system. 2nd and 3rd
The planetary gears 65 and 66 both mesh with and disengage from the fork gear 83. The fork gear 83 transmits rotational driving force to the cartridge spool 11 via the fork 23 in FIG. 6, the second sun gear 63 rotates counterclockwise in FIG. 9, and the third planetary gear 66 transfers to the fork gear. 83, the rotation in the film feeding direction is transmitted to the cartridge and system block 11, the second sun gear 63 rotates clockwise in FIG.
3, the rotation in the film winding direction (in the case of a pre-wind system, the frame advancing direction) is transmitted to the cartridge spool 11. The winding gear 67 transmits the driving force to the film winding spool 69, and the first charge gear 68 transmits the driving force to the charge cam 71 via the second charge gear 70 on the way. The charge cam 71 controls the movement of the pad lever 72 by its cam profile.
A pad 73 is attached to one end of. pad 7
3 brings the film into contact with the magnetic head HD according to the movement of the pad lever 72, and also releases the film from the contact state. The butt lever 72 is biased by the spring 90 and maintains a state of contact with the profile of the charge cam 71;
The urging direction is a direction in which the pad 73 is separated from the magnetic head HD. Mg in the figure is an electromagnetic magnet, and when the pad 73 maintains the state in which the film is in contact with the magnetic head HD, it is energized and attracts the pad lever 72 to maintain that state. The charge cam 71 is the eighth
In the figure, the initial position is assumed to be the state roughly shown in this figure after being rotated counterclockwise. The initial position of the charge cam 71 is such that the pad 73 holds the film magnetically.
This is the position where the pad lever 72 is pulled back toward the charge cam 71 by the biasing force of the spring 90 after the charge cam 71 has pushed the pad lever 72 up the most to bring it into contact with the HD. That is, charge cam 7
1 is in the initial position, the pad 73 is magnetically...
The film is away from the HD and does not touch the magnetic head HD or the pad 73. In the figure, 74 comes into contact with the rotating shafts of the first and third planetary gears 64.66 depending on its position, and the planetary gears 64.66
is a control lever that controls the position of the Since the first and third planetary gears 64 and 66 are located at different heights above and below,
The control lever 74 also has separate upper and lower arms, with one lever arm being shown in each of FIGS. 8 and 9, or they may be separate arms. This control lever 74 is urged downward in the figure by a spring 91,
At its lower end, a locking lever 75 engages and disengages to set the control lever 74 in two positions. The locking lever 75 is rotatable about the shaft 84 and is biased by a spring 92 in the counterclockwise rotation direction in the figure. Reference numeral 77 denotes a lock release lever to which a driving force is transmitted from the sun gear or its rotating shaft by the friction mechanism F. When the lock release lever 77 rotates counterclockwise in the figure and one end thereof engages with one end of the lock lever 75 and rotates further, the lock release lever 77 applies the biasing force of the spring 92 to the lock lever 75. The locking lever 75 is disengaged from the control lever 74 by rotating it counterclockwise and lifting it up. The range of movement of the lock release lever 77 is restricted by a stopper 78.
Even if the lock release lever 77 comes into contact with the puff 8 and a driving force is further transmitted from the sun gear side, the position of the lock release lever 77 is maintained as it is because the friction mechanism F causes slippage. A second planetary gear mechanism 80 is connected to the winding spool 69, and its rotation drives a sun gear (hereinafter referred to as a third sun gear) 81. The second planetary gear mechanism 80 includes a third sun gear 81 and one planetary gear (hereinafter referred to as a fourth planetary gear) 8 that meshes with the third sun gear 81.
2, the fourth planetary gear 82 is the third sun gear 81
The second charge gear 70 meshes with and disengages from the second charge gear 70 by revolving clockwise and counterclockwise around the second charge gear 70 . The take-up spool 69 has an annular groove formed in its film winding portion, and one end of a winding detection lever 79 biased by a spring 93 is configured to fit into this groove. When the film is completely wound around the take-up spool 69 by initial loading, the winding detection leno\-79 is pushed out of the groove by the wound film. The winding detection lever 79 comes into contact with the rotating shaft of the fourth planetary gear 82 to regulate its revolution area,
The fourth planetary gear 82 is controlled to engage and disengage from the second charge gear 70. Next, FIG. 16 shows the positional relationship between the photointerrupter for detecting the position of the film during initial loading, prewinding, frame advance, etc., the magnetic head, and the film. The film used in the camera of this embodiment is provided with one perforation P at both ends of each frame F to indicate the positions of both ends of each frame F, and there is also a film cart (not shown). On the side of the cartridge 9 from the last frame when the film is pulled out from the Linon 9 to the end, there are three perforations lined up to indicate the end of the film. The photo ink printer PI is provided near the film exit 15 of the cartridge 9 loaded in the camera, at the height of the film's perforation P, and directly below it at approximately the height of the lower edge of the film. , a magnetic head HD is arranged facing the back side. The magnetic side of the film is the back side. Photo interrupter P
I outputs a low level signal when it passes through the perforation P or when the leading edge of the film is located closer to the cartridge 9 than the photointerrupter PI, and the light from the light emitting section is blocked by the film. It outputs a high level signal when it is on. The operation of the camera of this embodiment will be described below with reference to flowcharts shown in FIGS. 17 to 23. Note that in each flowchart, the step of each operation is indicated by the symbol S. FIG. 17 shows the main routine for the overall operation of this camera. In this embodiment, step 001 is set as the first step when a battery that serves as a power source for the camera is loaded. When the battery is loaded, the battery detection switch S8 is turned on, and at the same time, the subroutine shown in FIG. 23 for initializing the camera state is executed, and the process moves to step 002. Step 002 is a state in which the camera stops operating and is waiting for input. If any operation is performed in this state, the lid is closed in step 003. It is determined whether the signal of CH S changes from a high level to a low level. That is, when a new film cartridge 9 or cartridge chamber 16 is loaded, the film is pre-winded, so it is determined in step 002 whether or not pre-winding is necessary. When the signal of the lid switch S5 changes from high level to low level in step 003, the process moves to step 004, and the film is breaved according to the briwind subroutine shown in FIGS. 18 to 20. After this briwind is finished, or step 003
If the signal of the lid switch S does not change from high level to low level, that is, if the lid switch S does not change from the high level to the low level, that is, if the lid switch S is not needed, the main switch S is turned off at step 005. It is determined whether or not the button is on and the shirt release is possible. Whether or not shirt release is possible is determined by whether or not a shirt release prohibition flag is set in a memory (not shown) in the microcomputer CP. If the main switch S0 is off or the shirt release prohibition flag is set, a display indicating that the main power is off is displayed in step 006, and then the process returns to step 002.
It returns to the state and is set to wait for input. On the other hand, the determination result in step 005 is the main switch S.
If 0 is on and shirt release is possible, step 0
At step 07, the main power is turned on, and the next step is 0.
At step 08, it is determined whether the photometry switch S is on. When the metering switch Sl is on, the release button 8 is being pressed to the first step, and the shirt release is about to be performed after the composition has been determined in the shooting procedure. It is. Conversely, if you are about to decide on the composition, use the metering switch SI.
is still off, and the zooming operations from step 009 onwards are performed. Therefore, in that case, step 0
In step 09, it is determined whether the zoom out switch S is on or not, and if it is on, step OIO
The zoom out subroutine is executed and the finder is zoomed out. On the other hand, if the zoom-out switch S3 is off, it is determined in step 011 whether the zoom-in switch S4 is on. If the zoom-in switch S4 is on, a zoom-in subroutine is executed in step 012, and the finder is zoomed in. If any of these switches s3+s are off, data is displayed in step 013 and the process returns to step 00.
Returns to the state of waiting for input from step 2. If it is determined in step 008 that the photometry switch Sl is on, that is, if the composition has already been determined and the shirt release is about to be performed, a battery check is first performed in step 014. ,
It is determined whether the battery voltage necessary for subsequent operation is sufficient. If the voltage is sufficient, a subroutine for photometry is executed in step 015. Then, in step 016, it is determined whether the photometry switch S1 is still maintained in the on state after photometry is performed. That is, it is determined whether or not the release button 8 is maintained in the first pressed position. If the metering switch Sl is turned off, it is assumed that the series of photographing operations has been canceled and the process goes through step 013 and returns to step 00.
The process returns to step 2, and in this case as well, the process waits for a new input. If the photometry switch Sl is maintained in the on state in step 016, it is determined in step 017 whether or not the release switch S is on. If the release button 80 is pressed to the second step, the release switch S is turned on, and then the shirt release based on the automatic focus control and automatic exposure control from step 018 to step 020 is executed, and then In step 021, the film is wound one frame and the magnetic data recording of the photographing information is performed in the second step.
It is executed according to the subroutine shown in Figure 1.22. Thereafter, the process returns to step 002 via step 013. On the other hand, if the release switch S is off in step 017, the photographer is waiting for a photo opportunity, and the process returns to step 014.
. Metering continues until the switch is turned on. When the release button 8 is about to be pressed to the second step, if the battery check in step 014 indicates that the battery voltage is insufficient, step 022 returns fB.
The data c and 0UTj are displayed and the process returns to the input waiting state of step 002. In this case, it is necessary to replace the old battery with a new one. Next, the details of the film rewind operation shown in step 004 in this main routine will be explained in detail in FIGS. 8 to 15, 16, and 18 to 20.
This will be explained with reference to the figures. When the brewind routine is executed, a release prohibition flag is first set in step 101 to prevent shirt release even if the release button 8 is pressed by mistake. Since the actual rewind operation is started after auto initial loading is completed, first, in order to perform auto initial loading, it is determined in step 102 whether or not the charge cam position detection switch Sll is on. Ru. This switch S6 is
It is turned on when the charge cam 71 is at the initial position. If the switch S8 is on, the first motor M1 is rotated forward in step 103 to perform initial loading of the film. This is the first sun gear 62 in Figure 8.
Then, the second sun gear 63 in FIG. 9 is rotated counterclockwise. At this time, the rotational driving force in the clockwise direction in the figure is transmitted to the lock release lever 77 via the friction mechanism F between the sun gear and the lock release lever 75, and does not act on the lock lever 75. The locking lever 75 engages with the lower end of the control lever 74 to hold the control lever 74 at the position shown in the figure (hereinafter, this position will be referred to as the upper position). When the control lever 74 is in the upper position and the first sun gear 62 rotates counterclockwise, the first planetary gear 64 meshes with the winding gear 67 and transmits its rotational driving force to the film winding spool 69; The driving force of the first motor M is not transmitted to the first charge gear 68. I wanted to,
With the charge cam 71 still in its initial position, press the pad lever 72.
Without pushing up the door 3, the magnetic door 3 and the HD are separated from each other, and both are retracted from the film feeding path. In this state, the driving force transmitted from the second sun gear 763 is transmitted to the fork gear 83 via the third planetary gear 66, as shown in FIG. The film is wound up and fed in the direction of the spool 69 by driving the system bulge 11 (feeding out from the film outlet 15 of the film cartridge 9. The magnetic head HD and the pad 73 are in a non-contact state with the film, and the leading edge of the film is moved by the magnetism. There is no interference with the head HD and the pad 73.If this feeding operation from the film outlet 15 is performed normally, the leading end of the film will pass the photo ink printer PI by the time a predetermined time elapses. At that time, the signal output from the photointerrupter PI should change from low level to high level.In order to detect this, in step 103, the first motor M
When the forward rotation of , is performed, the first timer starts measuring time in step 104, and in step 105 it is determined whether the signal of the photointerrupter PI has changed from low level to high level. The signal of the photointerrupter PI becomes high level when the light from the light emitter to the light receiver is blocked by the film, and if there is no film between the light emitter and the light receiver, or the light passes through the perforations of the film. When the light reaches the light receiving section, it becomes low level. The first timer is built in the microcomputer C and is set to the above-mentioned predetermined time. It is determined in step 186 whether or not a predetermined time has elapsed. If the signal of the photointerrupter PI does not become high level within the predetermined time, it is determined in step 186 that the predetermined time has elapsed, and the film cartridge 9 Since it can be determined that the film cartridge 9 has been incompletely loaded, the film cartridge 9 is reloaded according to the routine from step 142 to be described later. The circumferential speed of the take-up spool 69 is set higher than the circumferential speed of the fork 23, so that when the film is wound around the take-up spool 69, the film is pulled by the take-up spool 69 and enters the prewind operation. At that time, the fork gear 83 and the third planet gear 766 rotate clockwise around the third planet gear 66 or the second sun gear 63 because the rotation speed of the fork gear 83 is higher. The fork gear 83 ran away. When the film is wound around the take-up spool 69, the 10th
As shown in the figure, the film winding detection lever 79 is pushed out of the groove of the spool 69. In this state, the winding detection lever 79 allows the fourth planetary gear 82 of the second planetary gear mechanism 80 to revolve clockwise around the third sun gear 81, so that the fourth planetary gear 82 moves to the second charging gear. 7o, and its rotation is transmitted to the charge cam 71 via the second charge gear 70. That is, when the film is normally wound around the take-up spool 69 and the rewind operation begins, the charge cam 71 begins to rotate. Therefore, when the signal of the photointerrupter PI changes from low level to high level within a predetermined time in step 105, if the prewind operation can be started normally, the charge cam 71 moves from the initial position within a predetermined time. Therefore, in step 106, the first timer is reset and measurement of the predetermined time is started again, and in step 107, it is determined whether or not the charge cam position detection switch S is turned off within that time. Ru. If the switch S@ is not turned off within the predetermined time, it can be determined that the film has not been wound properly on the take-up spool 69, so the process skips from step 108 to step 128, and then moves the film cartridge and the film 9 according to the subsequent routine.
will lead you to reload. Switch S at step 107. When the pad 73 is turned off within a predetermined time, the pad 73 brings the magnetic surface of the film into contact with the magnetic head HD by the operation of the charge cam 71, as shown in FIG. This is done by reading the [t data of the film during prewind] to determine whether the film cartridge 9 loaded at that time is new or a reused cartridge 9 on which several frames have already been taken. This is an action for determining. By setting the time required to read the magnetic data of one frame of film and moving to the next frame within a predetermined time, and by monitoring the elapsed time, it is possible to determine whether the film winding operation is normal or abnormal during brewinding. 1 timer is reset, the counter of the photo interrupter PI is reset in step 110 in order to search for the last frame of the unphotographed film by perforation, and the magnet Mg is energized in step 111 in order to keep the pad 73 in the film pressing state. Subsequently, in step 112, magnetic data on the film is read. For film shot using the prewind method, during prewind operation, unshot frames pass through the photo ink printer P1 first, so if you look for the first shot frame, it will pass through the photo ink bumper P1 before that. Since it is sufficient to start photographing from a frame, it is determined in step 113 whether each frame has been photographed. If the frame whose data has been read has not yet been photographed, the photo interrupter PI determines whether or not the perforation at the end of the frame has been detected before the predetermined time of the first timer reset in step 109 has elapsed. To make this determination, in step 114, it is determined whether the signal of the photointerrupter PI has changed from high level to low level. If the level changes to low, change the perforation at the beginning of the next frame to the specified B.
In order to detect within efJj, time measurement by the second timer is started in step 115, and in step 116
The number of half rations detected by the interrupter PI (within a predetermined time) is counted by the number of pulses of the signal output, and after the predetermined time has elapsed, the number of pulses is determined to be 2 in step 118.
Determine whether the value is greater than or not. This is because three consecutive perforations are provided in the part where the film passes through the photointerrupter PI when all the film in the film cartridge 9 is pulled out to detect and detect the end of the film. In this case, the determination in step 118 makes it possible to determine whether or not the prewind operation has been completed. Conversely, if there is another frame, the number of pulses will be 2,
The next step 119 increments and updates the counter of the photointerrupter P1 by 1, and in order to read the magnetic data of the next frame, the first timer is reset in step 120, and the process returns to step 112. If the frame determined in step 113 described above is a frame that has already been photographed, in the prewind method, all subsequent frames are considered to have been photographed, so there is no need to wind the film any further. Further, if the number of pulses of the signal output from the photointerrupter PI determined in step 118 is greater than 2, it means that all frames have been prewinded, and therefore, in this case as well, winding of the film ends there. Therefore, in these two cases, from step 113 or from step 118 to step 12
5, the first timer stops the time-open measurement, and the first motor M is turned on at step 126. stop. Then, in each step from step 127 onwards, the first frame is set at a position where it can be photographed. to On the other hand, if there is a voltage drop due to a dead battery when winding the film during prewinding, due to insufficient driving force of the first motor M, the above-mentioned steering knob 114 - There is a possibility that the formation may not reach the photointerrupter PI within a predetermined time. Once upon a time, Ste. If the signal of the photointerrupter PI does not change from high level to low level within a predetermined time in step 114, a battery check is performed in step 122. If the result is that the battery is dead, the state of the prewind operation performed up to that point is stored in the nonvolatile memory in the microcomputer CP in step 123, and the state of the prewind operation performed up to that point is stored in the nonvolatile memory in the microcomputer CP.
Display Tj data and return to step 00 of the main routine.
The process returns to the input waiting state in step 2. In this case, it is necessary to replace the old battery with a new one. Furthermore, if the battery check in step 122 shows that the battery is still maintaining sufficient voltage, there may be some kind of mechanical failure, so the process moves to step 167 shown in FIG. 20 and the prewind is performed. The first motor M is stopped to stop the operation. When setting the first unshot frame to the shooting position after the prewind is completed, in step 126 the first motor M,
After stopping the first motor M1, step 127 reverses the first motor M1. In that case, as shown in FIG. 11, the first sun gear 62 rotates clockwise in the figure, causing the first planetary gear 64 to revolve clockwise and detach from the winding gear 67. On the other hand, the second sun gear 63 also rotates clockwise as shown in FIG. 15, causing the second planetary gear 65 to revolve in that direction and mesh with the fork gear 83. The fork gear 83 rotates clockwise in the figure to rotate the spool 11 of the film cartridge 9 in the film winding direction. When the film starts to be wound toward the cartridge 9, the photointerrupter P is activated immediately before reversing the first motor M.
In order to ignore the perforation at the end of the photographed frames that have passed through I, a second timer is started in step 151, and while the film is being wound for the photographed frames, steps 152 and 152 are started. The predetermined time is allowed to elapse. Then, in step 15, in order to detect that the barf orange at the end of the last photographed frame has passed through the photo interrupter PI after a predetermined period of time has elapsed,
3, it is determined whether the signal of the photo ink printer PI has changed from a low level to a low level. If the signal changes to low level, it will be determined that the next time the signal becomes low level is the perforation at the beginning of the frame that has not yet been photographed, so be careful not to pass through that position.
In step 154, the first motor M1 is temporarily stopped and the winding of the film is also stopped, but since the distance between the frames is short, the first motor M1 is rotating slightly due to inertia.
It is possible that at step 154, the perforation at the head of the frame that has not yet been photographed has already been located at the position of the photo interrupter PI. Therefore, in step 155, it is determined whether the signal of the photo ink printer PI is at a low level. If the signal is not yet at low level,
The perforation at the head of the unphotographed frame is also not at the position of the photo ink label PI, so step 15
At step 6, the first motor M1 is momentarily reversed to slightly rewind the frame, so that the perforation at the head of the frame that has not yet been photographed is accurately positioned at the photo ink club PI.
157 to completely stop the first motor M. In this situation q, is it possible to take pictures regarding the film position?
It must be possible to write shooting information after shooting.
To do this, the charge cam 71 must be at the initial position, and in step 158 it is determined whether the charge 7 cam position detection switch S8 is on. If the switch S8 is on, the current to the magnet Mg is turned off in step 165, and the pad 73 is retracted as shown in FIG. Thereafter, in step 166, the release prohibition flag is reset to enable shirt release, and the process moves to step 005 of the main routine. Further, if the switch S8 is off at step 158, the char 7 cam 71 is set to the initial position. Actions are taken to In that case step 1
At step 59, the first motor M is rotated forward, and at step 160, the first timer is started, and the switch S is turned on within a predetermined time.
8 is turned on or not in step 161. Regarding the control lever 74 at this time, the first
Since the sun gear 62 is in reverse rotation, at that time the friction mechanism F
The lock release lever 77 is rotated counterclockwise in FIG. is released, and the control lever 74 is pulled down from the upper position (see FIG. 10) to the lower position (hereinafter referred to as the lower position) by the biasing force of the spring 91. Therefore, the first planetary gear 64 meshes with the first charge gear 68 in the state shown in FIG. 12, and the charge cam 71 can be driven. Furthermore, since the second and third planetary gears 65 and 66 do not mesh with the fork gear 83 in the state shown in FIG. 13, they do not drive the cartridge spool 11. within the specified time,
If the switch S8 is turned on, the first motor χ4 is turned on in step 164.
In step 165, the current supply to Mg is turned off.Then, in step 166, the release prohibition flag is reset to enable shirt release, and the process proceeds to step 005 of the main routine. Note that the control lever 74 is linked to the lid 10 of the cartridge chamber 16, and when reloading the cartridge 9, the lid 10 is
It is configured to return to the upper position by opening. Also, if the perforation of the next frame is not detected during frame advance during briwind, and if the battery still maintains sufficient voltage as a result of the battery check in step 122 above, some machine Since a physical failure is likely, the process moves from step 122 to step 167 shown in FIG. 20, and the first motor M1 is stopped in order to temporarily stop the briwind operation. Furthermore, the first motor M1 is reversed in step 168 until the signal of the photointerrupter PI changes from high level to low level, and the perforation at the end of the frame is returned to the position of the photointerrupter PI at the time when the briwind was stopped. When the signal of the photo interrupter PI changes to low level in step 169, the second timer is started in step 170, one frame of film is rewound into the cartridge 9, and the count number of the counter of the photo interrupter PI is set to 1 in step 172. Lower and update. Step 173
Determine whether the count number of the counter has become 0 or not,
By repeating steps 169 to 173 until the number reaches 0, all frames of the film that have been wound up to the time when the rewind operation is stopped are rewound into the cartridge 9. When the count number becomes 0 in step 173, step 1
At step 74, it is again determined whether the signal from the photointerrupter PI has changed from high level to low level, and the first motor is operated until the signal changes to low level, that is, until the leading edge of the film passes through the photointerrupter PI. Continue reversing. Furthermore, when the signal changes to low level in step 174, a first timer is started in step 175 and the first motor M continues to rotate in reverse for a predetermined period of time until the entire film is rewound into the cart 17/9. Then, in step 176, when the predetermined time has elapsed, in step 177, the first motor N1. At the same time, the current supply to the magnet Mg is also cut off. Thereafter, each step from step 178 to step 184 is executed to set the charge cam 71 to the initial position in preparation for redoing the prewind. This operation is basically the same as the operation from step 158 to step 164 described above, but if the charge cam position detection switch S8 is on in step 178, the program directly skips to step 185 and displays the message "Prewind failed." Data indicating that "reloading is required" is output and the process returns to step 002 of the main routine. If the initial loading was not performed normally in step 108 described above, the process skipped to step 128, but in this case as well, in order to redo the prewind, the first mode M1 is first stopped in step 128, and the film cartridge is not loaded until then. . In order to rewind the film sent out from the film 9 into the cartridge 9, the first motor M1 is reversed in step 129, and the operations from step 130 to step 150 are performed in the same manner as the operations from step 174 to step 185 described above. However, in the case of initial loading, the magnet Mg is off, so step 14
In step 2, only the first motor M1 is stopped. Next, the details of the one-frame winding of the film and the head charging operation shown in step 021 in the main routine are shown in FIGS. 8 to 15, 16, and 2.
This will be explained with reference to Figure 1.22. When the one-frame winding and head charging subroutine is executed, a release prohibition flag is first set in step 201 to prevent shirt release even if the release button 8 is pressed by mistake. In order to wind up one frame of film while charging the head, sufficient voltage must be maintained in the battery, so a battery check is performed in step 202 before actual operation. If the battery has already run out, a message indicating that the winding operation has not been completed is sent to step 232.
In step 233, the data to be written in the next winding is stored in the non-volatile memory, and in step 233
At step 4, the display data of FB, C, 0UTj is output and the process returns to step 002 of the main routine. In this case, it is necessary to replace the old battery with a new one. If sufficient voltage is maintained in the battery check in step 202, the first motor M is rotated forward in step 203 to start head charging. At this time, as shown in FIG. 12, the control lever 74 has already been lowered to the lower position by the briwind operation, and as the first sun gear 62 rotates counterclockwise, the first planetary gear 64 moves to the first position.
It engages Charge Hand Aro 8. The rotation of the first motor M1 is transmitted from the first charge gear 768 to the charge cam 71 via the second charge gear 70, or is the operation normal within a predetermined time after the first motor M starts rotating normally. In step 204, a first timer starts measuring a predetermined time, and in step 205, the first timer starts measuring a predetermined time.
Monitor whether the charge cam position detection switch Sll is turned off. If the switch S8 is not turned off after a predetermined period of time has elapsed, it is assumed that there is an abnormality, that is, a failure, and all operations are stopped. When the switch S6 is turned off, it is determined that the char 7 cam 71 has started operating, so the first timer is reset in step 207, and the process proceeds to step 207. The charge cam 71 starts energizing the mag insulator 1-Mg with the brake 208 to maintain the head charged state, and the charge cam 71
Step 209 and step 2 determine whether the
10 to monitor. In this case as well, switch S6 is activated within a predetermined time.
If it does not turn on, it is considered a failure and all operations are stopped. If the switch 86 is turned on within a predetermined time, it means that it has operated normally and the charge cam 71 has returned to its initial position, so in step 211 the first motor M1 is stopped, and then one-frame winding is started. Step 212
to reverse the first motor MI. 1st motor\1,
When reversed, the first planetary gear 64 revolves clockwise from the state shown in FIG. 12 and separates from the first charge gear 68, as shown in FIG. Accordingly, as shown in FIG. 15, the second planetary gear 65 meshes with the fork gear 83, and the fork 23 (see FIG. 6) is rotationally driven in the direction of rewinding the film to the cart torino/9. Since this driving time is equivalent to one frame of film, the first timer is reset in step 213, and magnetic data such as photographing information is written in step 214 during the film winding operation. In step 215, it is monitored whether the signal of the photo ink printer PI changes from low level to high level within a predetermined time. That is, it is monitored whether the perforation at the end of the photographed frame passes through the photo interrupter PI. If the signal does not change to a high level within the predetermined time, it means that one frame of film was not wound within the predetermined time despite the result of the battery check in step 202. Once the process is judged, it is considered a failure and all operations are stopped. If the signal of the photo ink printer PI changes to high level in step 215, the first motor M
, and in step 218 the photo interrupter P
It is determined whether the I signal is at a low level. That is, if the film is slightly wound up by inertia after the first motor M stops, there is a possibility that the perforation at the beginning of the next unshot frame has reached the position of the photo interrupter PI. If this is the case (if the signal is at a low level), just stop the motor M (step 220), and if the signal remains at a high level, the motor M is momentarily stopped at step 219. By reversing the direction and rewinding it little by little, the parts of the frame at the beginning of the unphotographed frame are accurately brought to the position of the photo interrupter PI. After stopping the motor M in step 220, the power supply to the magnet Mg is also cut off in step 221, and the pad 73 is retracted as shown in FIG. In step 222, the count number of the 7-oto-interrupter P■ is decremented by 1 and updated. In step 223, it is determined whether or not the count number of the counter has reached O. If it is 0, the remaining frames are 0, so the remaining film that has come out of the cartridge 9 is completely wound into the cartridge 9. 22, the first motor M is reversed in step 232 of FIG. 22, and steps 233 to 24
1, the same operations as those from step 174 to step 184 described above are performed, and finally, in step 244, a data display indicating "Film End" is output, and the process returns to step 002 of the main routine. In this case, since all frames of the film have been photographed, the film cartridge 9 is removed. On the other hand, if the count number of the 7-otointeractor PI counter is not 0 in step 223, there are still unshot frames remaining, so step 224 to step 23
1, the same operations as those from step 158 to step 166 described above are performed. However, since the power supply to the magnet Mg has already been cut off in step 221, that step is not performed. From step 231, step 002 of the main routine
Return to Finally, the battery loading operation shown in step 001 in the main routine will be explained with reference to FIG. When the battery loading routine is executed, first, in step 301, a release prohibition flag is set. If the battery runs out during a prewind operation or one-frame winding operation, the information is stored in nonvolatile memory and the subsequent operation will continue, so the information in the memory is saved in step 302. read out. If the information is prewinding, the process moves from step 303 to step 306 to continue prewinding, and if the one-frame winding operation is in progress, the process moves from step 304 to step 305 to continue the operation. In either case, the release prohibition flag is reset in step 314 and the process returns to step 002 of the main routine. If the battery is loaded not during the operation described above,
From step 307 to step 313, the same operations as those from step 158 to step 164 described above are performed, and finally, in step 314, the release prohibition flag is reset and the process returns to step 002 of the main routine. However, if the switch S8 is on in step 307, the magnet Mg is not energized again, so the process skips directly to the switch 5314.

[Brief explanation of the drawing]

FIG. 1 is an external view showing an embodiment of a camera according to the present invention;
Figure 2 is a diagram showing how the lid of the camera shown in Figure 1 is opened and the film cartridge is inserted and removed, Figure 3 is an external view of the film cartridge used in the camera shown in Figure 1, and Figure 4 is the same as that shown in Figure 1. A diagram showing the camera cartridge and chamber as seen from the bottom side of the camera body.
'-v'' Composite cross-sectional view as seen from line arrow, Figure 6 is the ■-■ of Figure 4.
7 is a circuit block diagram of the camera of this embodiment, and FIGS. 8 to 15 are explanations showing the operating states of the film feeding mechanism and the magnetic gutter pad drive mechanism in various situations, respectively. 16 is an explanatory diagram showing the relationship between the film feeding state, magnetism, and photointerrupter of the camera of this embodiment. FIG. 17 is a flowchart diagram showing the main routine of the operation of the camera of this embodiment. 18 to 20 are flowcharts showing the subroutine of the prewind operation of the camera of this embodiment, FIGS. 21 and 22 are flowcharts of the subroutine of the one-frame winding and head charging operation of the camera of this embodiment, and FIG. FIG. 3 is a flowchart showing a subroutine of a battery loading operation of the camera of this embodiment. 9... Film cartridge, 10... 1 body, 11
...Spool, 16...Cartridge chamber, 36...
・Gravity-operated lever 37 as a locking means...weight

Claims (3)

[Claims] (1) a cartridge chamber (16) into which a film cartridge (9) in which photographic film is wound around a spool (11) and stored in a light-shielded state is inserted and removed in a direction along the axis of the spool (11); A lid body (
10), characterized in that the camera is equipped with a locking means (36) that restricts the opening operation of the lid (10) by having the entrance/exit of the cartridge chamber (16) facing downward. . (2) The camera according to claim 1, wherein the entrance/exit of the cartridge chamber (16) is formed on the bottom surface of the camera body. (3) The locking means includes a lever member (36) rotatably supported in the center and having a weight (37) at one end.
) The camera according to claim 1 or 2.