JP3738081B2 - Film unit with lens - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lens-fitted photo film unit provided with means for indicating to the outside that all photographic films have been wound inside a cartridge.
[0002]
[Prior art]
The lens-equipped film unit is provided with a cartridge storage chamber for storing a cartridge and a film storage chamber for storing an unexposed photographic film on both sides of the exposure opening. The exposed photographic film is accommodated in the cartridge by the film winding operation after photographing. Then, the film up to the film front end portion can be completely stored in the cartridge by the film winding operation after the last frame is photographed. As a result, when the film is taken out at the developing station, the leading end of the film does not protrude from the cartridge, so that the film can be reliably taken out from the cartridge storage chamber.
[0003]
At the laboratory, the operation of rotating the winding knob of the submitted lens-fitted photo film unit is performed. This is because the film unit with a lens has a number display plate, but even if the remaining number is displayed as “0”, the leading end of the film is not yet wound in the cartridge, and therefore the last performed on the user side. If there is not enough film winding operation after shooting is completed, the film tip will not be completely wound inside the cartridge, and even if you try to remove the cartridge as it is, the film tip will be caught and cannot be removed. is there. Therefore, it is desired to provide means for displaying that all photographed photographic films are stored in the lens-fitted photo film unit.
[0004]
[Problems to be solved by the invention]
As means for displaying the completion of film winding, the winding completion display plate may be rotated by a predetermined amount by using the rotation of the winding knob. As a display board, the amount of rotation from the start position to the winding completion display position is limited to one rotation or less in order to avoid displaying twice. In addition, since the lens-fitted photo film unit is compact, it is necessary to consider making the diameter as small as possible so that it can be incorporated in a narrow space. However, when a photographic film with the maximum number of shots is built in, the amount of rotation of the winding knob is 40 to 50 rotations, for example, as much as the film is wound up to the end of the film. If the mechanism is advanced by an amount corresponding to that, 40 to 50 teeth are required on the outer periphery of the display board. In this case, for example, in the case of an involute tooth profile, if the module m is 0.3, the pitch circle diameter D needs to be 12 to 15 mm. If the display panel has such a large diameter, it cannot be incorporated in a narrow space.
[0005]
The present invention provides a lens-fitted film unit capable of displaying the completion of winding by restricting the small-diameter display plate to one rotation or less even when the amount of rotation of the winding knob is large enough to be wound into the cartridge to the end of the film. For the purpose.
[0006]
[Means for Solving the Problems]
To achieve the above object, in the lens-fitted photo film unit of the present invention, a winding completion display window provided at a position different from the number display window outside the unit; and a photographic film stored in a film roll chamber A winding completion display plate rotatably provided between a display position and a non-display position for displaying in the winding completion display window that all has been wound into the cartridge; The roll-up completion display board is advanced from the non-display position toward the display position, and the roll-up knob is rotated by the amount that the entire photographic film stored in the film roll chamber is wound into the cartridge. Wrapping completion display means for causing the display board to reach the display position in a rotation range of less than one rotation from the non-display position.
[0007]
As the winding completion display means, a one-tooth gear that rotates together with the winding knob, a winding completion display gear formed on the outer periphery of the winding completion display plate, and the winding knob each time the winding knob rotates. It is preferable that the winding completion display gear is engaged with a single-tooth gear and a reduction gear that advances at a rotation angle smaller than a rotation angle at which the single-tooth gear advances by one rotation. In addition, it is preferable to provide a lock means for preventing further stepping of the winding completion display plate when rotated to the display position. At this time, it is preferable that the winding completion display gear is provided with a tooth notch portion for releasing the engagement with the reduction gear when the winding completion display plate reaches the display position so that the winding knob is not locked. is there. Further, in order to step the winding completion display gear at a rotation angle smaller than the rotation angle at which the one-tooth gear is rotated by one rotation, the first gear meshing with the one-tooth gear meshes with the winding completion display gear. The reduction gear may be configured by a two-stage gear including the second gear, and the number of teeth of the first gear may be set to be smaller than the number of teeth determined from the pitch circle diameter and the module. Further, since the one-tooth gear and the reduction gear are not always meshed with each other, the winding completion display plate is rattled. In order to prevent this, it is desirable to provide a leaf spring that is click-engaged with the reduction gear.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 shows the appearance of the lens-fitted photo film unit 10. The lens-fitted photo film unit 10 is composed of a unit main body 11 in which a photographic film cartridge and various photographing mechanisms are built, and an outer case 12 for housing the unit main body 11. The outer case 12 has such a contour as to expose the winding knob 13, the shutter button 14, the winding completion display window 15 and the like incorporated in the unit main body 11, and the photographing lens 17, the finder optical window 18 and the number of sheets. A hole for exposing the display window 19 and the like for display is provided.
[0009]
As shown in FIG. 3, the unit main body 11 includes a main body base 20, a photographic film cartridge 25, and an outer cover. The outer cover includes a rear cover 21 and a front cover 23.
[0010]
The front cover 23 is detachably attached to the front surface of the main body base 20 and covers the exposure unit 22 from the front and upper and lower directions with the main body base 20. On the upper surface of the front cover 23, there is provided a shutter button 14 which is cut out and elastically formed.
[0011]
A cartridge storage chamber 27 and a film roll chamber 29 are integrally formed in the main body base 20 with gaps on both sides of the exposure opening 33. The cartridge storage chamber 27 is a chamber for storing the cartridge 26, and the film roll chamber 29 is a chamber for storing the unexposed photographic film 28 pulled out from the cartridge 26 in the form of the film roll 24 . In addition, you may accommodate in a film roll chamber in the state which wound the unexposed photographic film around the core. In this case, the film tip is easily separated from the core.
[0012]
The bottoms of the cartridge storage chamber 27 and the film roll chamber 29 are open, and after the photographic film cartridge 25 is loaded, they are light-tightly closed by pull-top type bottom covers 30 and 31 provided on the rear cover 21, respectively. Can be removed. The bottom lid 30 is a lid for taking out the cartridge 26 in which the exposed photographic film 28 is taken up.
[0013]
On the cartridge storage chamber 27, a winding knob 13 is rotatably arranged. The winding knob 13 is integrally formed with a shaft that engages with the spool 26 a of the cartridge 26. This shaft constitutes a film winding mechanism together with the winding knob 13. A part of the winding knob 13 is exposed from the opening 21a of the rear cover 21, and the exposed part is rotated in the film winding direction (the arrow direction shown in FIG. 1), so that the spool 26a rotates and the film has been photographed. The photographic film 28 is wound up inside the cartridge 26.
[0014]
A tooth row 13 a is formed on the outer periphery of the winding knob 13. A check claw 20a provided on the main body base 20 is engaged with the tooth row 13a. The check claw 20a prohibits the winding knob 13 from being rotated in the direction opposite to the film winding direction.
[0015]
In the photographic film 28, two perforations 28 a and 28 b are arranged per photographing frame along one side edge in an effective exposure range between the film leading edge and the film trailing edge.
[0016]
The exposure unit 22 is an integral part incorporating the photographing lens 17, a film winding mechanism, a shutter mechanism, a film counter mechanism, a finder optical 22a, and the like.
[0017]
Cartridge 26 is a Okuridaseru structure photographic film 28, is openable and closable lid member 26b inside the film outlet are provided by the rotation of the spool 26 a. The lid member 26b is for light shielding the inside of the cartridge 26, and key grooves are formed at both ends thereof. These key grooves are exposed to the outside from the side surfaces along the axial direction of the spool 26a. A lid member closing mechanism is built in the gap between the exposure unit 22 and the cartridge storage chamber 27. When the bottom lid 30 of the rear cover 21 is opened at the developing station, the lid member 26b is interlocked with the opening operation. Closed automatically.
[0018]
A one-tooth gear 64 is integrally formed on the lower surface of the winding knob 13. As shown in FIGS. 1 and 4, the one-tooth gear 64 includes a reduction gear 65, a winding completion display gear 66, a lock groove 67, a leaf spring 68, and the like to constitute a winding completion display means. The reduction gear 65 and the winding completion display plate 70 are rotatably provided on shafts provided on the cartridge storage chamber 27, respectively. The winding completion display gear 66 is formed on the outer periphery of the winding completion display plate 70.
[0019]
The reduction gear 65 is a two-stage gear composed of a large gear 65a and a small gear 65b. One large gear 65a meshes with the one-tooth gear 64, and the other small gear 65b is connected to the winding completion display gear 66. Mesh.
[0020]
The single-tooth gear 64 rotates in the direction of arrow A (film winding direction) shown in FIG. 1 by the film winding operation of the winding knob 13, and meshes with the large gear 65a only once while the winding knob 13 rotates once. . The large gear 65 a rotates by a predetermined angle by the meshing of the one-tooth gear 64. The small gear 65b rotates the winding completion display plate 70 by an angle smaller than the predetermined angle (an angle obtained by multiplying the predetermined angle by a reduction ratio).
[0021]
The winding completion display board 70 is provided with a display portion 66a indicating the completion of winding on the upper surface, and a winding knob for the amount of the entire photographic film 28 stored in the film roll chamber 29 to be wound inside the cartridge 26. When 13 is rotated, the display unit 66a is rotated to a position where it is exposed to the outside from the winding completion display window 15.
[0022]
A lock mechanism that locks the rotation of the winding completion display board 70 is provided so that the winding completion display board 70 is not rotated any more after the winding completion display board 70 is rotated to the display position for displaying the completion of winding. This locking mechanism is composed of a protrusion 66 b provided integrally with the lower part of the winding completion display plate 70 and a lock groove 67 provided on the upper surface of the cartridge storage chamber 27. In the lock groove 67, a pair of pieces 67a and 67b sandwiching the protrusion 66b from both sides constitutes a groove 67c, and the piece 67b on the side where the protrusion 66b enters is shorter than the other piece 67a. . When the winding completion display board 70 is rotated to the display position, the winding completion display board 70 is pushed by the protrusion 66b, and the shaft of the winding completion display board 70 is bent to allow the protrusion 66b to enter. The piece 67b may be made of an elastic material, and the protrusion 66b may be allowed to enter by elastic deformation of the piece 67b.
[0023]
Further, it is necessary to release the engagement with the small gear 65b after the winding completion display plate 70 is rotated to the display position. For this reason, the winding completion display gear 66 is formed with a tooth notch portion 66c in which a part of the teeth are notched.
[0024]
The rotation angle of the large gear 65a from the start to the end of meshing of the teeth of the one-tooth gear 64 during one rotation is, for example, the pitch angle P of the large gear 65a in the case of an involute tooth profile defined by Japanese Industrial Standard (JIS B1701). Also grows. This is because the meshing margin (the portion corresponding to the effective tooth bamboo) is twice as long as the module. When the large gear 65a rotates more than the pitch angle P, the angle at which the winding completion display plate 70 is rotated is also increased. Naturally it grows. In this case, when the film winding is performed for the maximum number of shots, the winding completion display board 70 may be rotated one or more times.
[0025]
Therefore, in order to make the rotation angle of the winding completion display plate 70 as small as possible, the meshing margin m shown in FIG. 5 may be made smaller than the value of the module, but if the meshing margin m is made smaller than the module value, the large gear 65a feed becomes unstable. Therefore, the meshing margin m is set to the length of the module, and the large gear 65a is rotated by the pitch angle P while the one-tooth gear 64 rotates once. In this case, for example, the large gear 65a has a smaller number of teeth than the center distance between the single gear 64 and the large gear 65a, the pitch circle diameter of the single gear 64, and the number of teeth of the large gear 65a determined from the module. To increase the pitch angle.
[0026]
When the one-tooth gear 64 and the large gear 65a are not meshed with each other, the large gear 65a rattles and feed becomes unstable. Therefore, in order to ensure the feeding, the tip of the leaf spring 68 is click-engaged with the teeth of the large gear 65a to prevent rattling (see FIG. 1).
[0027]
Next, the operation of the above configuration will be described. The assembling process of the lens-fitted photo film unit 10 includes an operation of loading a photographic film in a dark room. In this operation, an unexposed photographic film 28 is pulled out from the cartridge 26 to create a film roll 24 . The amount of drawer from the cartridge 26 at this time is managed. The drawing amount is pulled out by the length corresponding to one frame after the first photographing frame at the rear end of the film is pulled out by the amount set in the exposure opening 33. In this way, by managing the amount of unexposed photographic film 28 drawn out at the factory, the amount of photographic film 28 stored in the film roll chamber 29 for each type of film with a different number of stipulated shootings is wound inside the cartridge 26. The amount of rotation of the winding knob 13 can be made constant.
[0028]
The created film roll 24 is stored in a film roll chamber 29, and the cartridge 26 is stored in a cartridge storage chamber 27. Thereafter, the rear cover 21 is attached to the main body base 20 to make the photographic film 28 light-tight. The unit main body 11 is completed by attaching the exposure unit 22 and the front cover 23 to the main body base 20.
[0029]
The completed unit main body 11 is in a state immediately before shutter charging, and is conveyed to the shutter inspection process in this state. In the shutter inspection process, first, the shutter mechanism is forcibly charged without rotating the winding knob 13. This operation is performed by inserting a jig through the opening 21b of the rear cover 21 shown in FIG.
[0030]
After the shutter charge, the shutter button 14 is pressed. As a result, the shutter blade swings once and again. The inspection uses a light projecting unit that makes infrared light incident from the photographing lens 17 side and a light receiving unit that receives light reflected by the shutter blades, and measures a time during which the reflected light cannot be received by the light receiving unit. The unit body 11 that has passed the shutter inspection is shipped as a lens-fitted film unit 10 with an outer case 12 attached.
[0031]
When the user purchases the lens-fitted film unit 10, first the film is wound by rotating the winding knob 13. As a result, the photographic film 28 is wound up, and when the first photographing frame on the rear end side of the film is set in the exposure opening 33, the film winding stop mechanism is activated to lock the film winding operation. During this time, the shutter mechanism is also charged.
[0032]
For shooting, the shutter button 14 is pressed. By this operation, the shutter mechanism is activated, and the shutter blade swings one reciprocating motion in front of the shutter opening. During this swinging, the subject light transmitted through the photographing lens 17 enters the photographic film 28 set in the exposure opening 33.
[0033]
Hereinafter, by repeating the operation described above, the exposure from the photographic frame in the order of the film rear end side of the effective exposure range is performed, the exposed photographic film 28 is wound into the cartridge 26. During this time, each time the winding knob 13 makes one rotation, the one-tooth gear 64 rotates the large gear 65a by a predetermined angle. The large gear 65a rotates the winding completion display board 70 by a predetermined angle through the small gear 65b. When the one-gear gear 64 and the large gear 65a are not meshed with each other, the rotational position of the large gear 65a at that time is maintained by the leaf spring 68, and the rotational position does not shift due to vibration or the like. Further, every time one frame of the photographic film 28 is transferred, the film counter mechanism of the exposure unit 22 advances the number display plate by one scale, and displays the remaining number of films at that time through the display window 19. .
[0034]
By the film winding operation after completing the shooting in the last shooting frame, the number display board of the film counter mechanism advances to a position for displaying that there is no remaining film number. At this time, the film counter mechanism prohibits the operation of the film winding mechanism. As a result, the film winding stop mechanism does not operate, so that all the photographic film 28 can be wound inside the cartridge 26.
[0035]
The film counter mechanism locks the rotation of the number display board when the operation of the film winding mechanism is prohibited. After the rotation of the number display board is locked, the display window 19 still displays that there is no remaining film number. For this reason, the film winding operation may be terminated at this point. However, in this embodiment, since the wrapping completion display window 15 is provided separately from the film counter display window 19, the user can confirm the display of the film wrapping completion through this window 15. Thus, the user performs the winding operation of the winding knob 13 until the display unit 66a indicating the completion of winding can be confirmed through the display window 15.
[0036]
As shown in FIG. 6, the small gear 65 b is moved to the display gear 66 when the film winding operation is continued and the winding knob 13 is rotated by the amount corresponding to the amount of rotation for winding the entire photographic film 28 into the cartridge 26. Is rotated by a predetermined angle, and the protrusion 66 b is pushed into the lock groove 67. Thereby, the display part 66a of the display gear 66 is exposed to the outside through the display window 15.
[0037]
After the winding completion display plate 70 is rotated to the winding completion display position, the small gear 65b faces the toothed portion 66c. Therefore , even if the film winding operation of the winding knob 13 is performed thereafter, the winding completion display is performed. The plate 70 does not rotate.
[0038]
The display portion 66a has a color different from that of the outer cover and the outer case. In addition, as shown in FIG. 4, the display window 15 is provided with a tapered surface 15 a on the entire circumference or part of the periphery of the display window 15. Thus, not only from directly above the display window 15 can be seen from any of the shift positions of the right and left front and rear reliably view the display of the display unit 66 a.
[0039]
After confirming the indication of the completion of the entrainment, the lens-fitted photo film unit 10 is submitted to the developing station. At the developing station, when the lens-fitted photo film unit 10 is submitted, the bottom cover 30 is first opened and the cartridge 26 is taken out. The lid member closing mechanism operates in conjunction with the opening operation of the bottom lid 30 and the lid member 26b of the cartridge 26 is closed. At this time, since the rotation operation of the winding knob 13 is surely performed to the position where the display portion 66a is exposed to the display window 15 on the user side, the film tip is sandwiched between the lid members 26b, and the film is damaged. It is possible to prevent inconveniences such as external light entering the inside of the cartridge 26 when the cartridge 26 is taken out and causing light exposure.
[0040]
Since the lid member 26b is securely closed in the taken-out cartridge 26, the spool 26a is rotated in the film feeding direction after the lid member 26b is opened in the dark room. As a result, the photographic film 28 is sent out from the film outlet of the cartridge 26 to the outside. The exposed photographic film 28 is immediately developed. After development, a printing process is performed to create a printed photograph. The developed photographic film 28 is returned to the user together with the printed photograph in a form wound in the cartridge 26. The empty lens-equipped film unit is again collected at the factory and recycled.
[0041]
【Example】
The reduction ratio between the small gear 65b and the display gear 66 is, for example, 8/30. The large gear 65a has a pitch circle diameter D of 5.4 mm, a module m of 0.3, and a number of teeth z of “16”. According to this, for example, when a photographic film 28 for taking 25 pictures is built in, if the amount of rotation of the winding knob 13 until the completion of winding is 29, the total rotation angle of the winding completion display board 70 is 8/30. × 22.5 × 29 = 174 degrees. Therefore, the display unit 66a may be displayed at a position shifted by 174 degrees from the start position of the winding completion display board 70 .
[0042]
In the case of incorporating photographic films 28 with different numbers of shots, the length differs depending on the type of film, and therefore the amount of rotation of the winding knob 13 for winding into the cartridge 26 to the end of the film is also different. In this case, use of complete panel 70 entrained changed only display position of the display unit 66 a. For example, in the case of incorporating a photographic film 28 for taking 40 pictures, if the amount of rotation of the winding knob 13 until the completion of winding is 45, the total rotation angle of the winding completion display board 70 is 8/30 × 22. Since 5 × 45 = 270 degrees, the display unit 66 a may be displayed at a position shifted by 270 degrees from the start position of the winding completion display board 70 .
[0043]
In the above embodiment, the film tip is housed inside the cartridge when not in use, and a photographic film with a cartridge that feeds the photographic film from the film tip by the rotation of the spool is incorporated, but the present invention is not limited to this. Alternatively, a well-known 135 type photographic film with a cartridge may be used. In this case, the lid member closing mechanism can be omitted.
[0044]
【The invention's effect】
As described above , according to the lens-fitted photo film unit of the present invention , when the winding knob is rotated so that the entire photographic film stored in the film roll chamber is wound into the cartridge, the winding completion display plate is displayed at the display position. in, because to reach a rotational range below 1 rotates from the non-display position, it is not necessary to provide a large number of teeth such as described in the prior art to complete panel entrainment, hence, the completion indication plate entrainment in diameter formed Can be incorporated into a compact film unit with a lens as it is.
[0045]
In the invention that locks the winding completion display plate when the winding completion display plate reaches the display position, the winding knob is forcibly rotated to release the engagement between the winding completion display gear and the reduction gear. However, breakage or damage can be reliably prevented. As a result, recycling that can be collected and reused in the factory becomes possible.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an outline of a winding completion display means.
FIG. 2 is a perspective view showing an appearance of a lens-fitted photo film unit.
FIG. 3 is an exploded perspective view showing a configuration of a unit main body.
FIG. 4 is a cross-sectional view showing a main part of a winding completion display means.
FIG. 5 is an explanatory view showing a portion where the meshing margin of the single gear and the large gear is changed so that the large gear rotates by one tooth by one rotation of the single gear.
FIG. 6 is an explanatory diagram showing a state in which a winding completion display means displays a winding completion.
[Explanation of symbols]
13 Hoisting knob 64 Single gear 65 Reduction gear 65a Large gear 65b Small gear 66 Enrollment completion display gear 66a Display part 66b Projection part 66c Tooth part 67 Lock groove 68 Leaf spring
70 Enrollment completion display board

Claims (6)

A perforation row that is provided on one side of the exposure opening and that accommodates a cartridge and a perforation row that is provided on the other side and that has two per exposure frame within the effective exposure range between the film leading edge and the film trailing edge. A film roll chamber that draws unexposed photographic film formed along the feeding direction from the cartridge and stores it in a roll shape, and engages with a spool provided in the cartridge, and rotates in the winding direction during the winding operation The rotating operation rotates the spool in the film winding direction, pulls out the unexposed photographic film from the film roll chamber, sets a new photographing frame in the exposure opening, and sets the exposed photographic film to the A roll-up knob that winds up in the cartridge storage room, and the photographic film is one photo frame long. Only the remaining number of shots at that time to increment the count display panel each time it is transferred, in the lens-fitted photo film unit having a number panel to be displayed on the number display window provided to the outside, the,
A winding completion display window provided at a position different from the number display window outside the unit;
A roll-up completion display plate rotatably provided between a display position and a non-display position for displaying in the roll-up completion display window that all of the photographic film stored in the film roll chamber has been wound into the cartridge; ,
In conjunction with one rotation in the winding direction of the winding knob, the winding completion display plate is advanced from the non-display position toward the display position, and all of the photographic film stored in the film roll chamber is stored in the cartridge. A winding completion display means for causing the winding completion display plate to reach the display position in a rotation region of less than one rotation from the non-display position when the winding knob is rotated by the amount of winding;
A lens-fitted photo film unit. The winding completion display means includes a one-tooth gear that rotates together with the winding knob, a winding completion display gear formed on the outer periphery of the winding completion display plate, and the winding knob rotates once in the winding direction. And a reduction gear for stepping the winding completion display gear at a rotation angle smaller than a rotation angle at which the one-tooth gear meshes with each other and advances with one rotation of the one-tooth gear. The film unit with a lens according to claim 1. A cartridge storage chamber that is provided on one side of the exposure opening and that stores a cartridge; a film roll chamber that is provided on the other side and draws unexposed photographic film from the cartridge and stores it in a roll; and the cartridge Is rotated in the winding direction at the time of winding operation, and the spool is rotated in the film winding direction by the rotation operation, and the unexposed photographic film is pulled out from the film storage chamber and newly renewed. A shooting knob is set in the exposure opening, and a winding knob for winding the exposed photographic film into the cartridge storage chamber, and the number display board is incremented every time the photographic film is transferred by the length of one shooting frame. The number of remaining shots at that time is displayed in the external number display window and the last shot is displayed. In the lens-fitted photo film unit having a number display plate is held in its position by stepping the position of displaying that the remaining photographic frame is not the winding up operation after completing the photographing frame, and,
A winding completion display window provided at a position different from the number display window outside the unit;
A winding completion display gear is formed on the outer periphery, and between the display position and the non-display position for displaying in the winding completion display window that all of the photographic film stored in the film roll chamber has been wound into the cartridge. A winding completion display board that is rotatably provided with,
A single-tooth gear that rotates together with the winding knob;
It is directly connected between the one-tooth gear and the winding completion display gear, and the one-tooth gear meshes with each rotation of the winding knob once in the winding direction, and the one-tooth gear makes one step. The winding completion display board is stepped at a rotation angle smaller than the rotation angle to be rotated, and the winding knob is rotated when the winding knob is rotated by the amount that the entire photographic film stored in the film roll chamber is wound into the cartridge. the completion display panel in the display position, a reduction gear to reach the in the rotation range of less than once rolling from the non-display position,
A film unit with a lens, characterized by comprising: The reduction gear is a two-stage gear including a first gear meshed with the one-tooth gear and a second gear meshed with the winding completion display gear, and the first gear has a pitch circle diameter and 4. The lens-fitted photo film unit according to claim 2, wherein the number of teeth is smaller than the number of teeth determined by the module. A lock means for preventing further stepping of the winding completion display board when rotated to the display position;
The toothing completion display gear is formed with a tooth notch for releasing the engagement with the reduction gear when the winding completion display plate reaches the display position. Item 5. A film unit with a lens according to any one of Items 2 to 4. 6. The lens-fitted photo film unit according to claim 2, further comprising a leaf spring that is click-engaged with the reduction gear.

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