JP2762535B2 - Film cartridge loading mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a film cartridge loading mechanism for a camera.

[Prior art]

Of the films used in today's cameras, roll films containing a patrone of 35 mm format of the standard called 135 film are the mainstream.
Most have a structure corresponding to the film.

[Problems to be solved by the invention]

In a film loading mechanism using a conventional 135 film and a camera having a structure corresponding to the 135 film, the film loading including an operation such as film loading is extremely troublesome. In addition, a conventional patrone has a light-shielding telempan adhered to the film exit portion, and since the telempe is in close contact with the film, the load of drawing out the film is large, and the film on the camera side is large. As a result, strength is required for the winding mechanism and the rewinding mechanism. The present invention has been made in view of the above-mentioned conventional technical problems, and has been devised to effectively solve the problems. SUMMARY OF THE INVENTION It is therefore an object of the present invention to enable the use of a film cartridge having a light-shielding means capable of reducing the film drawing load, and to make the handling of film in a camera safe and simple.

[Means for Solving the Problems]

The film cartridge loading mechanism according to the present invention has the following configuration in order to solve the above-described problems and achieve the object. That is, a mechanism for loading a film cartridge having a light-shielding lid for opening and closing an outlet of a film wound in a housing into a cartridge chamber of a camera, the cartridge chamber lid for opening and closing the cartridge chamber, and the cartridge chamber lid. A cartridge chamber lid locking means for fixing the cartridge in the closed position, and an ejecter which is reciprocally movable to engage and follow the film cartridge entering the cartridge chamber, and is urged in a direction opposite to the entering direction. Means, an eject lock means for engaging the eject means at an engagement position with the film cartridge loaded in the cartridge chamber, and fixing the eject means at that position, and a cartridge chamber lid lock means. And a lock for releasing the locked state of the eject lock means. And release means, and a lid operating means for closing the light-shielding lid body along with the operation of the unlocking means.

[Action]

In the film cartridge loading mechanism according to the present invention, a film cartridge having a light-shielding lid that can be opened and closed at the film outlet of the cartridge housing is used. The light shielding of the film cartridge is performed by closing the light shielding cover. Such a structure in which light can be shielded by opening and closing the light-shielding lid eliminates a light-shielding structure involving friction, such as telemp, by opening the light-shielding lid when the film is drawn. When the film cartridge enters the cartridge chamber in which the film cartridge is to be loaded, the cartridge engages with the ejecting means, and the ejecting means is pushed into the interior of the cartridge chamber with the entering operation. The eject means engages with the eject lock means at the depressed position,
It is fixed in that position. This ejecting means is urged in the direction of pushing the film cartridge out of the cartridge chamber, but is fixed by the eject lock means, so that the film cartridge is loaded,
That is, when the entire film cartridge is housed in the cartridge chamber, it does not act to push the film cartridge out. When removing the film cartridge from the cartridge chamber after the rewinding of the film is completed, the lock state of the cartridge chamber lid locking means and the eject locking means is released by operating the unlocking means, and the light shielding lid of the film cartridge is released. Is closed and the ejection means pushes the film cartridge out of the cartridge chamber almost simultaneously when the cartridge chamber lid is opened.

【The invention's effect】

As apparent from the above description, according to the present invention, the following excellent effects are exhibited. That is, the loading and unloading of the film cartridge is performed by an extremely simple operation, so that the load for unloading the film can be reduced, which contributes to the downsizing of the loading mechanism and the drive motor. Further, when the cartridge chamber lid is opened to take out the film cartridge, the light-shielding lid of the film cartridge is interlocked and closed, so that the film is not exposed by opening the cartridge chamber lid without forgetting to close the light-shielding lid. .

【Example】

Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. 1 to 26. FIG. 1 shows the structure of the film cartridge and its loading mechanism in this embodiment,
Is shown in an exploded perspective view in a state where the back cover 2 is not loaded and the back cover 2 is closed. First, in the loading mechanism shown in the upper part of the figure, the back cover 2 constitutes a part of the bottom surface of the casing (not shown) of the camera body, and swings around the rotation shaft 4 thereof. Film cartridge 1 in camera body
The cartridge chamber 3 is opened and closed.
In the figure, reference numeral 5 denotes a back cover opening knob. The knob 5 is slidable vertically in the figure while being held and guided by a casing (not shown), and is exposed to the outside of the camera so that the knob 5 can be operated from outside the casing. A shaft 7 is attached to the lower end of the back cover opening knob 5 at the upper end position, which is urged by a spring 6 upward in the sliding direction.
The back cover locking lever 8 that can rotate around
When the back cover opening knob 5 moves downward, one end of the back cover locking lever 8 is pushed, and the lever 8 is rotated around the shaft 7 in the counterclockwise direction in the figure. When the lever 8 rotates counterclockwise, the engagement between one end of the lever 8 and the lock claw 10 of the back cover 2 is released, and the back cover 2 is allowed to swing freely.
The lever 8 itself is urged by a spring 9 to rotate around the shaft 7 clockwise in the drawing. Therefore, when the back cover opening knob 5 is at the uppermost position of the movement range, one end of the lever 8 contacts the lower end of the back cover opening knob 5 as shown in the drawing, while the other end of the lever 8 is in the closed position. The back cover 2 is engaged with the lock claw 10 of the cover 2 to lock and hold the back cover 2 in the closed position. In the figure, reference numeral 11 denotes an eject lever. The eject lever 11 is configured to push the film cartridge 1 out of the cartridge chamber 3 to the outside of the cartridge chamber 3 by opening the back cover 2 and hold the film cartridge 1 in the above-mentioned casing (not shown). It is guided and slidable in the vertical direction in the figure, and is urged downward by a spring 12, that is, in the pushing direction of the film cartridge 1. The bent portion 11a at the upper end abuts on the upper bottom surface 1a of the loaded film cartridge 1. When the film cartridge 1 is loaded, the bent portion 11a receives a pushing force by the film cartridge 1, and when ejected, the bent portion 11a reverses. The bent portion 11a pushes out the film cartridge 1. On the side of the eject lever 11, a claw 11b is formed to protrude sideways. On the other hand, an arm 5a protruding laterally is also formed on the side of the back cover opening knob 5, and between the claw 11b and the arm 5a, the arm 5a can swing around the shaft 13 at the center. An L-shaped locking lever 14 is provided. When the back cover release knob 5 is depressed from the state shown in FIG. 1, the locking of the lock claw 10 by the back cover locking lever 8 is released and the back cover 2 is opened, and at the same time, one end of the locking leg 14 is pressed by the arm 5a. And
The locking lever 14 rotates clockwise around the shaft 13 and the engagement between the claw 11b of the eject lever 11 and the locking lever 14 is released, so that the eject lever 11 is moved downward by the urging force of the spring 12. Moving. At this time, if the film cartridge 1 is loaded in the cartridge chamber 3, it is pushed out of the cartridge chamber 3. Claw 11 of eject lever 11
When the engagement between the b and the locking lever 14 is released, the claw 11b is located below the locking lever 14 in the figure. This state is also a state in which the film cartridge 1 is ready to be loaded. When the film cartridge 1 is loaded, the upper bottom surface 1a pushes up the bent portion 11a of the eject lever 11, and with this operation, The pawl 11b also moves above the locking lever 14 so as to push the locking lever 14 away. The upper part of the claw 11b is formed on the slope 11c so as to be convenient for pushing the locking lever 14 away when performing this operation. The locking lever 14 is biased by a spring 22 so as to rotate in the counterclockwise direction in the figure. When the claw 11b pushes the locking lever 14 over the film cartridge 1 when loading the film cartridge 1, the locking lever 14 is again turned on. Enters the lower side of the claw 11b to hold the eject lever 11 in the state shown in FIG. In the figure, reference numeral 15 denotes a shutter operation first lever. The shutter referred to here is a light-shielding shutter as a light-shielding lid provided in the film cartridge 1 as described later. The shutter operation first lever 15 is slidable in the vertical direction in the figure as the back cover 2 is opened and closed while being urged downward by the spring 17. That is, when the back cover 2 is closed, it comes into contact with the protrusion 16 formed on the back cover 2 and is pushed upward in the drawing, and when the back cover 2 is opened, the protrusion 16
Is released, and is pulled down by the biasing force of the spring 17. An inclined portion 15a is formed at the upper end of the first lever 15. One end of a shutter operation second lever 18 rotatable around a rotation center 19 is in contact with the inclined portion 15a. The other end of the second lever 18 is locked to one end of a tension spring 20, and is constantly urged to rotate clockwise in the drawing. Therefore, the first lever
While being guided by the inclined portion 15a with the up and down movement of 15,
It is configured to be able to swing. On the other hand, on the upper bottom surface 1a of the film cartridge 1, a light-shielding shutter driving section 1b is provided. The second lever 18 is provided with a shutter operation pin 12 which engages with the light-shielding shutter drive unit 1b when the film cartridge 1 is loaded in the cartridge chamber 3. The shutter operation pin 21 is
With the swing of the lever 18, the lever 18 rotates about the rotation center 19 and acts on the light-shielding shutter driving unit 1b to open and close the light-shielding shutter (shown in FIG. 2). Therefore, when the back cover release knob 5 is pressed down to open the back cover 2, the projection 16 is retracted, so that the first lever 15 for shutter operation is pulled down by the force of the spring 17, and the second lever 18 along the inclined portion 15a is moved. Shutter operation pin with the swing of
21 closes the light-blocking shutter. FIG. 2 shows a film cartridge 1 according to this embodiment.
FIG. 2 is an exploded perspective view showing the internal structure of the device. As a whole, a top housing 31, a bottom cover 32, and a body 33 constitute a cartridge housing, in which a film spool 34, a film sprocket 35, and a light shielding shutter 36 are built.
FIG. 3 shows the upper lid of the assembled film cartridge 1.
It is a top view which removes and shows 31. The fuselage 33 has a large room 37 for storing a film spool 34 and a film sprocket.
It comprises a small room 38 in which a shutter 35 and a light-shielding shutter 36 are stored. A film outlet 39 is formed in the small room 38, and the roll film wound around the film spool 34 is formed.
40 engages the perforations (not shown) with the film sprocket 35, and the sprocket 35 drives the film 40 out of the film outlet 39. 4th
The figure shows a longitudinal sectional view of the assembled film cartridge 1 cut along a polygonal line passing through the respective rotation axes of the film spool 34 and the film sprocket 35. The upper and lower ends of the film spool 34 and the film sprocket 35 are rotatably held by an upper lid 31 and a bottom lid 32, respectively. The film spool 34 and the film sprocket 35 are rotated by engaging with a spool fork and a sprocket fork on the camera side, respectively, and each of the engaging portions 34a and 35b has a semicircular cross-sectional shape. Even if these forks and the engaging portions 34a, 35b come into contact with each other at the time of loading the film cartridge 1, the engaging portions 34a, 35b
Is rotated and escapes, so complete engagement is achieved. Also, as shown by the dashed line in FIG.
If the distal end of the fork 91 is also rounded in the same manner, either or both of the fork 91 and the engaging portions 34a and 35b on the cartridge side rotate and escape, so that complete engagement is more reliably achieved. Therefore, a space for retracting the fork and a fork biasing spring are not required, which contributes to a reduction in the number of parts, a reduction in size, and a reduction in cost. Also, FIG.
As shown in FIG. 24, a film spool 34 shown in FIG.
If the one 34a is formed in a single character, the user can relatively easily turn the film spool 34 using tweezers or the like, and there is a concern that the normal film winding state in the film cartridge 1 is easily broken. However, as shown in FIGS. 25 and 26, if a fork engaging portion is formed by radially inwardly projecting portions 34a 'which are equally divided and arranged on the inner peripheral wall of a hole 92 into which the camera-side fork 91' fits. , The user's own operation can be prevented more than the one-character engagement portion 34a, the rigidity of the fork and the rigidity of the mold for molding the fork can be increased, and the rotational force can be increased by the plurality of protrusions 34a '. As a result, the film spool 34 is also less likely to be damaged. And the rotation of the film spool 34 itself becomes smooth. The light-blocking shutter 36 has two arms above and below it
36a and 36b are protrudingly provided, and each tip is formed in an annular portion. The annular portions of the arms 36a and 36b of the light-blocking shutter 36 are fitted on the rotation shaft 35a of the sprocket 35, and the light-blocking shutter 36 swings around the rotation shaft 35a to open and close the film outlet 39 of the body 33. I do. A spring 41 as shown in FIG. 2 is interposed between the lower arm 36b of the light-shielding shutter 36 and the bottom lid 32.
In the closing direction of the film outlet 39. Also,
In the upper part of the light-shielding shutter 36, a concave portion that can be engaged with the shutter operation pin 21 in the film cartridge loading mechanism is formed as the above-described light-shielding shutter driving section 1b. Therefore, when the film cartridge 1 is loaded into the loading mechanism with the light-shielding shutter 36 closed, the shutter operation pin 21 engages with the drive section 1b to rotate further, and overcomes the urging force of the spring 41. By turning the light shielding shutter 36, the film outlet 39 is automatically opened. In the figure, reference numeral 42 denotes a semiconductor memory substrate which is mounted on the upper lid 31 and records film information and various photographing information (the number of photographed films of the film cartridge 1).
Is a lid as its cover. Semiconductor memory board 42
Has patterned signal contacts 42a arranged therein,
Each contact is electrically connected to the semiconductor memory chip 42b. A used or unused discrimination signal is recorded on the semiconductor memory board 42, and when the film cartridge 1 on which the used signal is recorded is loaded, the camera body does not perform the initial loading of the film. Is controlled as described above, and double shooting can be prevented. Further, a signal indicating the number of filmed films is recorded. If the signal is not zero, the film is skipped during the initial loading by the number of films, and the film is fed so that shooting can be started from the beginning of an unused portion. Is done. Therefore,
Even if the entire film in the film cartridge is rewound and taken out by the time the film is completely taken out, if the film is again taken with the film cartridge 1, the film can be automatically taken from an unused portion. The TAB tape is used as it is for the semiconductor memory substrate 42. Therefore, the mounting efficiency is improved, and the reliability is improved because it is suitable for automatic assembly, which is extremely convenient for mass production. As described above, in the film cartridge 1 of the present embodiment, the film can be rewound even if all the frames of the film have not been photographed, and the film can be reused from an unphotographed portion. There must be. Therefore, the leading end of the rewound film is always kept engaged with the film sprocket 35. Specifically, as shown in FIG. 2, a film stopper 44 is attached to the inner peripheral surface of the body 33 of the film cartridge 1. On the other hand, as shown in FIG. 5, the film 40 wound around the film cartridge 1 of this embodiment has a perforation 40a formed only on one side, and a stopper engagement hole 40b formed at the tip of the opposite side. Are formed. The film stopper 44
b can be disengaged from b, and allow the film to move in the film feeding direction (the direction of arrow B in the figure).
In addition, in the film rewinding direction (the direction of arrow A in the figure), a projection formed of a surface inclined with respect to the film surface and a surface substantially perpendicular to the stopper engagement hole so as to restrict the movement of the film from the stopper engagement hole to the front. It has a portion 44a. FIG. 6 shows the structure and operation status of the film cartridge configured as described above and the film feeding mechanism corresponding to the loading mechanism. FIG. 6 (a) shows the operation status at the time of initial loading of the film, FIG. 6 (b) shows the operation status at the time of normal film winding, and FIG. 6 (c) shows the operation status at the time of film rewinding. The drive motor 51 is provided in a film take-up spool 52 on the camera side, and its drive force is transmitted to a planetary gear unit 53 via a gear train of a reduction system. The planetary gear unit 53 is a first gear having a fixed rotation center.
53a, a second gear 53b that planetarily moves in the circumferential direction while meshing with the first gear 53a, and the first and second gears 53a and 53b.
And an arm lever 53c for transmitting the driving force of the planetary motion to the second gear 53b. A plunger lever 54 that reciprocates as an actuator is engaged with one end of the arm lever 53c, and 55 is a main body of the plunger device. At each position just above the film spool 34 and the film sprocket 35 of the film cartridge 1 loaded in the cartridge chamber, a third gear 56a having a cartridge spool fork 56 on a rotating shaft and a cartridge sprocket fork 57 The fourth gear 57a provided above is arranged apart from each other. Further, a fifth gear 58 and a sixth gear 59 arranged on the opposite side of the fourth gear 57a are in mesh with the third gear 56a in order. The fourth gear 53b of the planetary gear portion 53 is planetary and can mesh with the fourth gear.
The gear 57a and the sixth gear 59. As shown in FIG. 6 (a), the operation of the film feeding mechanism at the time of initial loading is such that the arm lever 53c of the planetary gear unit 53 rotates counterclockwise by the forward rotation of the drive motor 51, and the second gear 53b meshes with the fourth gear 57a,
4th gear 57a and cartridge sprocket fork 5
The film sprocket 35 is rotated through the counterclockwise direction in FIG. The film sprocket 35 engages with the perforation of the film wound around the film spool 34 in the film cartridge 1 and feeds the film from the film outlet 39. The film is fed by the drive of the film sprocket 35 until the film is wound around the film take-up spool 52, and the initial loading is performed. In this operation mode, the rotational speed of the drive motor 51 is reduced so as to reduce the film feed speed in order to prevent an accident such as a perforation break. As shown in FIG. 6 (b), the operation of the film feeding mechanism at the time of ordinary film winding is such that the second gear 53b is moved to the neutral position by driving the plunger lever 54, that is, the fourth gear 57a is also moved to the sixth position. It comes to an intermediate position where it does not mesh with the gear 59. Therefore, the driving force of the drive motor 51 is not transmitted to the film cartridge 1 side, and only the film take-up spool 52 is driven to take up the film 40. Next, as shown in FIG. 6 (c), the operation of the film feed mechanism at the time of rewinding the film is as follows.
, The arm lever 53c of the planetary gear unit 53 rotates clockwise, the second gear 53b meshes with the sixth gear 59, and the fifth gear
The film spool 34 is rotated clockwise in the figure via the gear 58 and the third gear 56. Film take-up spool
The photographed film wound up by 52 is rewound on the film spool 34 and stored in the film cartridge 1. Means for reliably detecting that the film has been wound around the take-up spool 52 during the initial loading may be any of those mechanically detected and those electrically detected, and it does not matter which sensor is used. When the winding is complete, the mode is switched to the winding mode by driving the plunger device 55, and when the winding is incomplete, the film is automatically rewound by detecting this and reversing the drive motor 51. . By doing so, it is possible to reliably prevent an accident in which the photographing is performed without noticing that the film is not wound on the take-up spool and the photographing fails. Although not shown, a frame counting mechanism is attached to the fourth gear 57a. In applying the above-described film cartridge and its loading system, the film cartridge 1 is inserted from the bottom side of the camera at the time of loading. In the film cartridge 1 of this embodiment, as shown in FIG. 7, a color sticker is attached to or printed on the bottom surface of the film spool 34 on the back cover 2 side of the camera at the time of loading, and a relatively conspicuous color display 71 is provided. Is applied. Accordingly, by providing a transparent window 72 as shown in FIG. 8 on the back cover 2 of the camera, it is possible to easily determine whether or not the film cartridge 1 is loaded in the cartridge chamber 3 from the outside of the camera. Further, if the display 71 of the pattern as shown in FIG. 9 is displayed, the rotation of the film spool 34 can be known, so that it is possible to confirm the film feed. Also, as shown in FIG.
For example, it may be represented by characters indicating information on the film, and if these characters are represented on the bottom surface of the film spool 34, it is of course possible to confirm the film feed. In such a configuration, matching with the loading direction of the film cartridge 1 is extremely convenient. That is, as in the case of the conventional patrone, if the display is provided on the side surface of the cartridge 1, there is a possibility that the corner or the end surface of the cartridge is caught by the maltprene material or the like used for shading. Must be arranged in the cartridge chamber 3 so as to be visible from the outside of the camera, resulting in design restrictions. By the way, when the transparent window 72 is provided on the back cover 2, a problem of light shielding at that portion occurs. In the present embodiment,
As shown in FIG. 16, a light-blocking material 75 made of maltprene is adhered to the inside of the back cover 2 so as to surround the transparent window 72, and when the back cover 2 is closed, the bottom cover 32 of the film cartridge 1 is attached. The light shielding material 75 makes elastic contact. Further, as shown in FIG. 17, a convex annular stepped portion 76 surrounding the periphery of the film spool 34 may be formed on the bottom cover 32 of the film cartridge 1. In this case, as shown in FIG. 18, a concave annular step portion 77 that fits into the convex annular step portion 76 is formed around the transparent window 72 on the inner surface of the back cover 2. Therefore, when the film cartridge 1 is loaded and the back cover 2 is closed, the two stepped portions 76 and 77 are fitted to bend the light entrance path, so that light enters the cartridge chamber from the gap between them. Cut off. It is also possible to provide the presence / absence determination display of the film cartridge 1 as described above on the end face of the convex annular stepped portion 76. With this configuration, light can be shielded without using a light-shielding material such as maltoprene, which contributes to downsizing and cost reduction.
Further, when using maltoprene, there is a possibility that the light-shielding function may be deteriorated due to the aging of the material or the uneven compression. However, such a problem is not caused in the step structure. In the film cartridge 1 according to the present embodiment, when the film cartridge 1 is taken out of the camera using the film halfway, it is devised that the user can easily determine from the appearance whether the film has been used or unused. Have been. That is, as shown in FIG. 11 or FIG.
A seal 73 that is easily broken by the camera-side member at the loading position is attached to the entrance of the engaging portion hole of at least one of the film spool and the film sprocket or to the window of the contact of the semiconductor memory. Therefore, once the film cartridge 1 is loaded, the seal 73 is
Since the film is torn as shown in FIGS. 13 and 14, it is easy to determine whether the film is a used film or an unused film. In particular, by attaching the seal 73 to the window of the contact of the semiconductor memory, the contamination of the contact of the semiconductor memory can be prevented, and the reliability can be improved.
In the case of the example shown in FIG. 11, the above-mentioned camera-side members that break the seal 73 are the cartridge spool fork 56 and the cartridge sprocket fork 57 (both are shown in FIG. 6), and the example shown in FIG. In this case, the contact pins 74 are provided on the inner side of the cartridge chamber 3 as shown in FIG. The contact pin 74 has a sharp point,
The contact can be reliably obtained through the seal 73. Since the semiconductor memory board 42 is a flexible printed board and is disposable, it does not matter if the semiconductor memory board 42 is pierced with the contact pins 74. Further, since the contact pins 74 are arranged at the back of the cartridge chamber 3, there is no danger. Such a configuration does not require any special display mechanism, ensures reliable operation, and lowers the cost of the film cartridge 1 itself. In the above-described embodiment, the seal 73 is attached to a place where the film 73 is broken when the film cartridge 1 is loaded, so that it is possible to distinguish between used and unused. A recording sticker or the like made of a material or a pressure-sensitive material may be attached to a part of the film cartridge 1 and recorded on the camera side by heat or pressure to enable discrimination. FIG. 19 (a),
(B), (c), and (d) illustrate locations where these recording stickers 78 are attached to the film cartridge 1. In this case, as shown in FIG. 20, a heating device or a pressure generating device is provided as a recording device 79 at a predetermined position in the cartridge chamber 3 on the camera side. The installation position, of course,
This is the position facing the recording seal 78 when the film cartridge 1 is loaded. As the heat generating device or the pressure generating device, a device that generates pressure by a known thermal head, a spring means, or the like may be used. Various display examples of records are shown in FIGS. 21 (a), (b),
(C), (d) and (e) show. (A) shows a case where a recording sticker 78 whose color changes by heat or pressure is used. (B) shows a case where a character can be displayed using a thermal head. (C) shows a case in which the number of photographed films or the number of remaining films is displayed by a number corresponding to the halfway removal. (D) shows a case in which the number of shots up to that time is displayed by a color change for each of the takeouts, corresponding to a plurality of takeouts. (E) shows a case where the number of remaining pages is displayed by color change and numbers, contrary to (d). In the above embodiment, a modified example of the eject lever 11 will be described. The film cartridge 1 is moved to the cartridge chamber 3 by the eject lever 11 of the above embodiment.
When the film cartridge 1 is taken out from the film cartridge 1, the film cartridge 1 is pushed out by the elastic force of the spring 12.
The film cartridge 1 jumps out with considerable momentum, which may surprise the user. Therefore, as shown in FIG.
If the c is formed and the movement of the eject lever 11 is adjusted by the governor 82 via the gear train 81 meshing with the rack 11c, the film cartridge 1 is pushed out slowly. The governor 82 can also be replaced by another similar governing mechanism. Further, in the above embodiment, the spring 41 as shown in FIG. 2 is used as a separate member from the light-shielding shutter 36 for the urging means in the closing direction of the light-shielding shutter 36, but as shown in FIG. The spring part 36c molded into the spring may be used as the urging means. In such a spring structure, durability against repeated loads, temperature creep, and the like tend to be problems, but the film cartridge 1 does not repeatedly open and close as much as a problem, and thus has sufficient reliability.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the structure of a film cartridge and its loading mechanism in this embodiment in a state where the film cartridge is not loaded and the back cover is closed.
FIG. 2 is an exploded perspective view showing the internal structure of the film cartridge in the present embodiment, FIG. 3 is a plan view showing the assembled film cartridge with its top cover removed, and FIG. 4 is a film spool and a film spool of the assembled film cartridge. It is the longitudinal cross-sectional view cut | disconnected in a polygonal line shape through each rotation axis of a film sprocket. FIG. 5A is a diagram showing the relationship between the film and the film stopper in the present embodiment as viewed from the film surface side, and FIG. 5B is a state in which the film stopper and the stopper engagement hole are engaged. FIG. 5 (c) is a diagram showing a state in which the engagement between the film stopper and the stopper engaging hole is released, and FIG. 6 (a) is a diagram showing the present embodiment. FIG. 6B is a perspective view showing an operation state of the film feeding mechanism during film loading in the film feeding mechanism of the present embodiment, and FIG.
FIG. 9C is a perspective view showing an operation state at the time of film rewinding in the film feeding mechanism of the present embodiment. FIG. 7 is a view showing the presence or absence of a film cartridge in this embodiment, FIG. 8 is a perspective view showing a transparent window of a camera back lid in this embodiment, and FIG. 9 and FIG. FIG. 13 is a diagram showing the presence or absence of a film cartridge in the example,
FIG. 11 shows the use of the film cartridge in this embodiment /
FIG. 12 is a diagram showing a seal indicating unused, FIG. 12 is a diagram showing a seal indicating use / non-use of a film cartridge in another embodiment, and FIG. 13 is a diagram showing a used state of the seal of FIG. , FIG. 14 is a view showing the used state of the seal of FIG. 12, FIG. 15 is a view showing a situation where the contact pin breaks the seal of FIG. 12, and FIG. 16 is a light shielding around the back cover in this embodiment. FIG. 17 is a cross-sectional view showing the structure, FIG. 17 is a perspective view showing the bottom surface of the bottom cover of the film cartridge according to another embodiment, and FIG. 18 is a cross-sectional view showing the light-shielding structure around the back cover according to another embodiment. FIG. 19 is a diagram showing a place where a recording sticker can be attached in the present embodiment, FIG. 20 is a diagram showing a recording sticker in this embodiment and a recording apparatus for the recording sticker, and FIG.
The figure is a diagram showing the display mode of the recording sticker in this embodiment,
FIG. 22 is a view showing a cartridge ejecting mechanism of a film cartridge loading mechanism in another embodiment,
FIG. 23 is a perspective view showing a light-shielding lid of a film cartridge in another embodiment, FIG. 24 is a cross-sectional view showing a fork engaging portion of a film spool of the film cartridge in this embodiment, and FIG. 25 is another embodiment. 26 is a plan view showing a fork engaging portion of the film spool in FIG. 26. FIG. 26 is a cross-sectional view showing the fork engaging portion of FIG. 25 and the corresponding camera-side fork. DESCRIPTION OF SYMBOLS 1 ... Film cartridge, 2 ... Back lid as a cartridge chamber lid, 3 ... Cartridge chamber, 5 ... Back lid opening knob as unlocking means, 8 ... Back lid locking as cartridge chamber lid locking means Lever, 11 ... Eject lever as eject means, 14 ... Locking lever as eject lock means, 15, 18, 21 ... Each of shutter operation first lever, shutter operation second lever, shutter as lid opening means Actuating pins, 31, 32, 33 ... top cover, bottom cover, body as housing, 36 ... light-blocking shutter as light-blocking lid, 39 ... film outlet,
40 …… Film

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G03B 17/00, 17/28

Claims (1)

(57) [Claims] 1. A mechanism for loading a film cartridge having a light-shielding lid for opening and closing an outlet of a film wound in a housing into a cartridge chamber of a camera, wherein the cartridge chamber lid opens and closes the cartridge chamber. A cartridge chamber lid locking means for fixing the cartridge chamber lid in the closed position; and a reciprocally movable member for engaging and following the film cartridge entering the cartridge chamber, and biasing the cartridge cartridge in a direction opposite to the entering direction. Ejecting means, engaged with the ejecting means at the engaging position with the film cartridge loaded in the cartridge chamber, and ejecting locking means for fixing the ejecting means at that position; and the cartridge chamber Release both the locks of the lid lock and the eject lock. And unlocking means, the film cartridge loading mechanism with the operation of the unlocking means, characterized in that a lid operating means for closing the light-shielding lid.