JPH1020446A - Sheet film pack and method for assembling counter display plate for the sheet film pack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assemble and position a counter display plate at the same time, and also to easily and surely assemble and position the plate at a low cost. SOLUTION: Jig insertion through-holes 18e and 19a are formed in the base plate 18a of a counter storing chamber 18 and the counter display plate 19 so as to be arranged in a straight line. The jig 20 is made to project from the through-hole 18e into the counter storing chamber 18, and the leading end of the jig 20 is fitted into the through hole 19a and the counter display plate 19 is dropped inside the counter storing chamber 18, then, a counter figure 1 is displayed in a counter display window 18c, and the counter display plate 19 is positioned at an initial position. Thereafter, the pressure plate is inserted along a guide groove 18f, and an opening part 18g on a slide side is closed by a shielding plate 24, thereafter, the jig 20 is removed from the through-holes 19a and 18e.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet film pack in which the initial position of a counter display panel can be easily, reliably, and cost-effectively installed, and a method of mounting the counter display panel.

[0002]

2. Description of the Related Art A sheet film pack contains a plurality of sheet film units stacked in a pack body, and is used by being loaded into a pack holder. In this sheet film pack, the sheet film unit can be quickly replaced by a simple operation of pushing and pulling the lid, thereby enabling continuous photographing with a large camera. The sheet film unit is a unit in which 4 × 5 inch sheet films are stored one by one in a protective case called a sheath.

For example, in a sheet film pack proposed by the present applicant in Japanese Patent Application Laid-Open No. H8-110568, a box-shaped counter storage chamber is provided in the pack body, in which a counter feed pawl of a pack holder rotates and steps. The counter display board is stored. On the lid side of the counter storage chamber, an opening for incorporating the counter display board is formed,
The bottom plate of the counter storage chamber is provided with a counter display window for displaying the counter number of the counter display plate and the end mark “E” and a feed claw receiving opening for receiving the counter feed claw of the pack holder.

In order to install the counter display panel in the counter storage chamber, the counter display panel is manually or mechanically dropped into the counter storage chamber from the opening on the side of the lid, and after the holding plate is inserted along the guide groove from above the counter display panel. Then, close the opening on the lid side with the shielding plate. Next, the counter display plate exposed from the feed claw receiving opening is rotated by hand or machine, and is positioned at a predetermined initial position (a position where the counter number "1" is displayed in the counter display window). . Then, whether or not the positioning of the counter display plate has been correctly performed is confirmed visually or by a sensor such as a solid-state imaging device.

[0005]

As described above, after assembling the counter display panel into the counter storage chamber by hand, the operation of turning the counter display panel by hand and positioning the counter display panel at the initial position while checking it visually is simple. Can be done at relatively low cost, but it is easy for mistakes to occur because of human intervention. Further, if all the assembly, rotation, and confirmation of the counter display panel are performed by a machine, although it is reliable, the manufacturing equipment becomes large-scale and disadvantageous in terms of simplicity and cost.

The present invention has been made in view of the above circumstances, and simultaneously incorporates and positions a counter display board.
Further, it is an object of the present invention to provide a sheet film pack which can be performed simply, reliably and at low cost, and a method of incorporating the counter display plate.

[0007]

In order to achieve the above object, a sheet film pack according to the present invention comprises a pack body for stacking and storing a plurality of sheet film units, and a counter housing formed in the pack body. And a counter display panel rotatably stored in the counter storage chamber and rotatably stepped in response to a mechanical displacement signal from outside the pack body. The bottom plate and the counter display plate are provided with through holes for inserting jigs aligned in a straight line.

Further, according to the method of assembling a counter display plate of the present invention, a pack main body for stacking and storing a plurality of sheet film units, a counter storage room formed in the pack main body, and a rotation inside the counter storage room are provided. A method for assembling a counter display plate of a sheet film pack, comprising: a counter display plate that is freely stored and is rotated and stepped in response to a mechanical displacement signal from outside the pack body. A through hole for inserting a jig aligned with the display plate in a straight line is provided, and after projecting the jig into the counter storage chamber from the through hole of the bottom plate, align the through hole of the counter display plate with the jig. By dropping the counter display panel into the counter storage chamber, the installation and positioning of the counter display panel are performed simultaneously.

[0009]

2, a sheet film pack 1 according to the present invention has a box-shaped pack body 3 having a detachable cap member 2 at an end thereof, and a plurality of sheets packed and stored therein. , For example, eight sheet film units 4
And a lid 5 with a handle 5a for opening and closing an opening 3a formed in the upper part of the pack body 3 (the side to be attached to the camera). The sheet film unit 4 includes a 4 × 5 inch sheet film 6 and a plastic sheath 7 for housing the sheet film 6.

The lid 5 is larger in size than the sheet film unit 4, and is pushed and pulled with the handle 5a to form grooves 8a, 9a of a pair of guide rails 8, 9 formed on both edges of the pack body 3. Can be slid along. As shown in FIG. 3, the sheet film pack 1
Prior to the loading of the cap 5 into the pack holder 10, the lid 5 has a pair of claw portions 12 in which a pair of locking holes 5 c and 5 d formed in the distal end portion 5 b are formed in the claw member 12 of the cap member 2.
a and 12b, and a projection 5e provided near the handle 5a abuts on the end of the pack body 3 to lock the opening 3a.

A pressure plate spring 15 for urging the sheet film unit 4 toward the opening 3a is provided at the bottom of the film storage chamber 3b in which the sheet film units 4 are stacked and stored. The pack body 3 near the film storage chamber 3b has a V-shaped groove 1 perpendicular to the sliding direction of the lid 5.
6 are formed, and the telemping member 17 is fixed to this. A box-shaped counter storage chamber 18 is provided in the pack body 3 on the side of the handle 5a, and a disc-shaped counter display panel 19 is pivoted about a shaft 18b that is integrally erected at the center of the bottom plate 18a. It is dropped so that it can rotate freely.

As shown in FIG. 4, a counter display window 18c for displaying the counter number and the end mark "E" of the counter display plate 19 on the handle 5a side is formed in the bottom plate 18a of the counter storage chamber 18. Feeding claw receiving opening 18d for receiving the counter feeding claw of the pack holder 10 in the portion thereof
Are formed. At a predetermined position of the bottom plate 18a near the film storage chamber 3b, a through-hole 18 through which a thin round bar-shaped jig 20 is inserted when the counter display plate 19 is assembled.
e is formed. The shape and size of the through-hole 18e are adapted to the cross-sectional shape (circular in this embodiment) and the cross-sectional size of the jig 20 so that the jig 20 can be inserted without difficulty and without rattling.

As shown in FIGS. 1 and 5, the counter display plate 19 has an initial position on the counter display plate 19 (a position where the counter number "1" is displayed in the counter display window 18c).
When the positioning is performed, a through-hole 19a for positioning the display plate through which the jig 20 is inserted is formed opposite to the through-hole 18e of the bottom plate 18a. As with the through hole 18e of the bottom plate 18a, the through hole 19a is also easily held by the jig 20,
The shape (circular in the present embodiment) and the size allow insertion without rattling. Although the sizes of the through holes 18e and 19a are changed for easy understanding of the drawings, they may be the same.

On the front surface 19b of the counter display panel 19, counter numbers "1", "2", "3",.
.., "8" and end mark "E" are engraved, and a claw portion 19c with which the counter feed claw of the pack holder 10 is engaged is formed on the periphery thereof.
(B)). On the back surface 19d of the counter display plate 19, there are formed seven reverse rotation preventing claws 21a of the same shape and one reverse rotation preventing claw 21b higher than this. Back 19
d, a cylindrical tube 19e passed through the shaft 18b
Is protruding. Reference numeral 19f is a hole of the cylinder 19e through which the shaft 18b is inserted.

As shown in FIGS. 6 and 7, a holding plate 22 provided with a spring portion 22a is inserted into a guide groove 18f of the counter storage chamber 18 from above the counter display panel 19, and further from above the counter display chamber 18. A shielding plate 24 for shielding the lid-side opening 18g from light is covered. This shielding plate 24
The protrusions 24a, 24b, 24c formed at these three corners
Hole 18 formed at a corresponding position in counter storage chamber 18
h, 18i, 18j, it is fixed to the lid side opening 18g.

As shown in FIG. 8, since the spring end 22b of the holding plate 22 is restricted by the inner wall surface of the shielding plate 24, the lower end 22d of the holding plate 22 is
The pressing plate 22 forms a ratchet mechanism between the counter display plate 19 and the reverse rotation preventing claws 21a and 21b.

When the pressing plate 22 is adjacent to the reverse rotation preventing claw 21a,
Any one of the corresponding counter numbers "1" to "8" is counted by the counter panel 19 at the rotation position of the counter display panel 19, which is inserted between each other and between the reverse rotation preventing claw 21a and the reverse rotation preventing claw 21b (see FIG. 5). It is displayed on the display window 18c (see FIG. 1).
When the pressing plate 22 rides on the reverse rotation preventing claw 21b and comes into contact with the projection 21c, the end mark "E" is displayed on the counter display window 18c.

Each time the lid 5 is pushed and pulled after the photographing is completed, the counter feed nail of the pack holder 10 pushes the nail 19c,
The counter display plate 19 is rotated and stepped by one scale. At this time, the lower end 22d of the holding plate 22 is
The top of the holding plate 22 protrudes outward from the opening 24d since the height of the reverse rotation preventing claw 21a is low when the first to seventh images are taken. do not do.

When the pulling lid 5 is pushed and pulled after the last eighth image has been taken, the pressing plate 22 rides on the tall reversing prevention claw 21b having a high height and rises, and the upper end 22c is opened.
4d, it engages with the locking hole 5f (see FIG. 2) of the lid 5. Thereby, the lid 5 is locked to the pack body 3. At the same time, the lower end 22d of the holding plate 22 is
1c, further rotation of the counter display plate 19 is prevented.

The counter display plate 19 is moved to the counter housing 18
First, the jig 20 is inserted from the outside into the through hole 18e.
(See FIG. 4) so that the tip of the jig 20 projects into the counter storage chamber 18 by a predetermined length, for example, 1 cm. Next, the through hole 19a is aligned with the tip of the jig 20, and the hole 19f of the cylinder 19e is aligned with the shaft 18b.
The counter display panel 19 is dropped into the counter storage chamber 18 from the lid side opening 18g. As a result, the installation of the counter display plate 19 into the counter storage chamber 18 and the positioning of the initial position are performed simultaneously, and the first counter number “1” is displayed in the counter display window 18c.

Next, when the holding plate 22 is inserted from above the counter display plate 19 along the guide groove 18f, the lower end 22d of the holding plate 22 is positioned between the inclined surface of the reverse rotation preventing claw 21a and the vertical surface of the reverse rotation preventing claw 21b. (See FIG. 5). Thereafter, when the lid-side opening 18g is closed by the shielding plate 24, the spring end 22b of the pressing plate 22 is regulated by the inner wall surface of the shielding plate 24. Pressing and preventing inadvertent rotation of the counter display plate 19 from the initial position. Finally, the jig 20 is inserted into the through hole 19.
a, 18e.

As shown in FIG. 2, a pack holder 10 for loading and using the sheet film pack 1 constructed as described above includes a holder body 10a, a lid 51 rotatably mounted on the holder body 10a, An inner frame 52 slidably mounted in the main body 10a. On the lid 51,
Exposure opening 5 smaller in size than sheet film unit 4
3 are provided.

The back surface of the lid 51 is a receiving surface 54 for receiving the upper surface of the sheet film unit 4 and positioning the sheet film unit 4 at the exposure position. A pair of grooves 54a are formed in the longitudinal direction of the receiving surface 54, and a leaf spring 56 having one end fixed to the bottom surface of the groove 54a.
Are provided two by two in total. This leaf spring 56
When the sheet film pack 1 is loaded into the pack holder 10 and the lid 51 is closed, the pack body 3 is pressed downward in the figure. Further, these leaf springs 56 also have a function of pressing the sheet film unit 4 at the exposure position from above.

In the vicinity of the hinge of the lid 51, a ridge portion 57 which engages with the groove 2a of the cap member 2 to lock the cap member 2 in the holder main body 10a when the sheet film pack 1 is loaded, and a claw member 12 A pair of projections 58a, 58b for pushing down the projections 12c, 12d (see FIG. 3) to release the claws 12a, 12b from the locking holes 5c, 5d of the lid 5.
Are formed. In addition, near the short side of the exposure opening 53 on the inner wall surface of the lid 51, a telemping member 59 for preventing external light from entering through a gap between the inner wall surface of the lid 51 and the lid 5.
Is fixed. A knob 61 operated to take out the sheet film pack 1 from the holder main body 10a is slidably provided on the upper surface side of the front end portion of the lid 51.

Boxes 62, 6 provided at the corners of the middle frame 52
A mechanism for controlling the sliding movement of the middle frame 52 with the holder main body 10a, and for moving the counter display plate 19 forward, and the like are incorporated in 3. The box parts 62, 6
Claw portions 64, 6 protruding from openings formed in the upper wall
5 is engaged with the locking holes 5c and 5d when the opening 3a is fully opened, and regulates the pulling range of the pull lid 5 and the like.

As shown in FIG. 9, ridges 73 and 74 for positioning the pack holder 10 on the exposure frame 72 of the large format camera 71 are formed on the upper portion of the lid 51. Reference numeral 7
5 is a sliding contact surface on which the middle frame 52 slides and the holder body 1
This is a telemping member that prevents external light from shining through a gap between the inner wall surface of Oa.

The sheet film pack 1 is placed in the pack holder 1
When the cover 51 is closed by inserting it into the holder body 10a of
The protrusions 57 are engaged with the grooves 2a of the cap member 2, and the cap member 2 is held in the holder main body 10a. Then, since the projections 58a and 58b abut against the projections 12c and 12d to push down the claw member 12, the claw portions 12a and 12b are disengaged from the locking holes 5c and 5d of the lid 5, and the lid 5 is unlocked. .

After the pack holder 10 is mounted on the exposure frame 72 of the large format camera 71, the handle 5a is gripped and the lid 5 is pulled out to the position shown in FIG. In this position, the lid 5 is restricted by the claw portions 64 and 65, and further pull-out operation is prevented. Then, the opening 3a of the pack body 3 is completely opened, and the first sheet film unit 4a is passed through the opening 3a by the urging force of the pressure plate spring 15 to receive the receiving surface 54.
And set at the exposure position. At this time, the middle frame 52 is locked to the holder main body 10 a by the latch mechanism incorporated in the box portion 62, and the middle frame 52 does not slide with the pulling-out operation of the lid 5.

Subsequently, when the lid 5 is returned to the original position,
As shown in FIG. 1, the sliding lid 5 is inserted between the first sheet film unit 4a and the second sheet film unit 4b, and the sheet film unit 4 at the exposure position.
The flatness of a is ensured. At this time, the lid 5 is locked to the middle frame 52 by the latch mechanism built in the box portion 62, and the engagement between the holder body 10a and the middle frame 52 is released. In addition, an arc-shaped projection 78 (see FIG.
(See Reference window). By opening and closing the shutter of the large format camera 71 in this state, the first sheet film unit 4a is exposed.

After the first photographing is completed, the user grasps the handle 5a and pulls it, as shown in FIG. 12, leaving only the cap member 2 behind the holder body 10a and the middle frame 52 and the sheet film pack 1 as shown in FIG. Are integrally pulled out of the holder body 10a. At this time, the edge 5 of the receiving surface 54
4b, the exposed first sheet film unit 4a is locked at the same position, so that the sheet film unit 4a is moved from the pack body 3 through the gap between the upper surface of the lid 5 and the receiving surface 54. Get out.

The sheet film unit 4a coming out of the pack body 3 is moved by the leaf spring 56 to the holder body 10a.
Is pushed into the bottom side of the. At this position, the slide frame restricting means (not shown) acts, so that the middle frame 52 cannot be pulled out any further. At this time, since the lid 5 closes the opening 3 a of the pack body 3, even when the sheet film pack 1 is pulled out from the pack holder 10, external light is applied to the sheet film unit 4 in the pack body 3. It does not extend.

Next, the sheet film pack 1 is
When the sheet film unit 4a is inserted into the holder body 10a, the rear end of the sheet film unit 4a is regulated by the ribs 31a of the sheath receiving portion 31, so that the sheet film unit 4a is separated from the partition plate 33 and the tip 3e of the pack body 3. The sheet enters the pack main body 3 through the collection port 35 which is a gap between the sheet film unit 4 and the sheet body, and rides on the pressure plate spring 15 to be inserted into the lowermost layer of the unexposed sheet film unit 4.

When the sheet film pack 1 is completely inserted into the holder main body 10a together with the middle frame 52 in this manner, the counter feed pawl incorporated in the box 62 is displayed on the counter through the feed pawl receiving opening 18d. Claw part 1 of plate 19
9c, the counter display plate 19 is rotated and stepped by one scale. As a result, the counter number displayed in the counter display window 18c is changed from "1" to "2". 9 except that the second sheet film unit 4b is located directly below the lid 5. Hereinafter, by repeating the same operation, the photographing can be performed one after another.

By taking an image of the eighth sheet film unit 4 by repeating the above-described procedure and performing an operation of pulling out and inserting the sheet film pack 1, the exposed sheet film unit 4 is photographed in the pack body 3. The layers are sequentially stacked from above, and the opening 3a is covered with the lid 5 (see FIG. 9). When the photographing of one sheet film pack 1 is completed in this way, the holding plate 22
After riding on the reverse rotation preventing claw 21b, it comes into contact with the projection 21c to prevent the counter display plate 19 from rotating further. As a result, "E" indicating that the number of shootable images has become zero is displayed on the counter display window. Further, the upper end 22c of the pressing plate 22 is engaged with the locking hole 5f of the pull lid 5 through the opening 24d, and the pull lid 5 is locked to the pack body 3. Further, since the lid 51 is unlocked at the same time, the lid 51 can be opened by operating the knob 61.

With the rotation of the lid 51, the projections 58a, 58
Since the pressing of the projections 12c and 12d by b is released,
The claw member 12 is raised, and the claw portions 12a and 12b are
The cap member 2 and the lid 5 are connected by engaging with c and 5d. On the other hand, since the projection 5 e of the lid 5 is engaged with the end of the pack body 3, the cap member 2 is locked to the pack body 3. And the cap member 2 by the ridge portion 57
Is released, the used sheet film pack 1 can be taken out from the pack holder 10.

In the embodiment described above, the jig to be inserted into the through hole has a thin round bar shape. However, the present invention is not limited to such a shape, and may be, for example, a square bar shape. In this case, the shape of each through hole of the bottom plate of the counter storage chamber and the counter display plate is changed according to the cross-sectional shape of the jig.

[0037]

As described above in detail, according to the sheet film pack of the present invention, the bottom plate of the counter storage chamber and the counter display plate are provided with the through holes for the jig insertion aligned in a straight line. The counter display plate can be incorporated and positioned at the same time and reliably, while being a very simple and low-cost means. Further, according to the counter display board incorporating method of the present invention, the jig is projected from the through hole of the bottom plate, the through hole of the counter display plate is aligned with the jig, and the jig is dropped into the counter storage chamber. Since it is a method, it can be easily applied to both manual work and machine automation. That is,
In the case of manual work, almost no equipment cost is required, and the initial position of the counter display plate is automatically determined at the same time as the assembly, so that reliable and highly efficient work is possible. In addition, when automation is performed by a machine, the assembly and positioning of the counter display panel can be performed at the same time in a simple process, so that the structure of the assembly machine can be simplified, equipment costs can be reduced, and the assembly time can be significantly reduced. Savings can be expected, which can contribute to lower cost of the sheet film pack.

[Brief description of the drawings]

FIG. 1 is a sectional view (A) and a plan view (B) showing a counter storage chamber and a counter display panel according to the present invention.

FIG. 2 is an external view of a sheet film pack and a pack holder.

FIG. 3 is a side sectional view of a sheet film pack.

FIG. 4 is a perspective view showing a counter storage chamber from the bottom side of the sheet film pack.

FIG. 5 is a perspective view showing a counter display plate and a jig.

FIG. 6 is an exploded perspective view showing the structure of a counter storage chamber.

FIG. 7 is an explanatory view showing the internal structure of the counter storage chamber from the lid side opening.

FIG. 8 is a cross-sectional view showing the internal structure of the counter housing from the handle side of the lid.

FIG. 9 is a sectional view of a main part showing a state immediately after the sheet film pack is loaded in the pack holder.

FIG. 10 is a cross-sectional view of a main part showing a sheet film pack and a pack holder in which a lid has been pulled out from the state shown in FIG. 9;

FIG. 11 is a cross-sectional view of a main part showing a sheet film pack and a pack holder during photographing.

FIG. 12 is a cross-sectional view of a main part showing a state where the pack body is pulled out together with the middle frame after photographing.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sheet film pack 3 pack body 4 sheet film unit 5 lid 18 counter storage room 18 c counter display window 18 e, 19 a through hole 19 counter display plate 20 jig 22 holding plate

Claims (2)

[Claims] 1. A pack main body for stacking and storing a plurality of sheet film units, a counter storage chamber formed in the pack main body, and a rotatable storage in the counter storage chamber, which is provided from outside the pack main body. A sheet film pack including a counter display plate that is rotated and stepped in response to a mechanical displacement signal, wherein a jig insertion penetrator is aligned with the bottom plate of the counter storage chamber and the counter display plate in a straight line. A sheet film pack having holes. 2. A pack main body for stacking and storing a plurality of sheet film units, a counter storage chamber formed in the pack main body, and a rotatable housing in the counter storage chamber, which is provided from outside the pack main body. In a method for assembling a counter display plate of a sheet film pack having a counter display plate that is rotated and stepped in response to a mechanical displacement signal, the counter display plate is aligned with a bottom plate of the counter storage chamber and the counter display plate. After providing a through-hole for the jig insertion, after projecting the jig into the counter storage chamber from the through-hole of the bottom plate,
A method for assembling the counter display plate of a sheet film pack, wherein the counter display plate is dropped into the counter storage chamber by aligning the through hole of the counter display plate with the jig, thereby simultaneously installing and positioning the counter display plate. .