JPH08286270A - Film pack holder - Google Patents

Abstract

PURPOSE: To provide a film pack holder capable of surely releasing the locking of a cover and a holder main body. CONSTITUTION: A plate 110 being a pawl main body part is freely slidably supported on the rear end part side of the cover 54 and pawls 90, 90 are formed on both end parts of the plate 110. A knob 94 is connected to the central part of the plate 110 and two torsion coil springs 116, 116 are arranged in positions symmetric with respect to the central part. The plate 110 is energized in a locking direction by the energizing force of the torsion coil springs 116. When the knob 94 is depressed, the plate 110 is smoothly slidden in the direction where the locking is released against the energizing force of the torsion coil springs 116, without being shaken, since the plate 110 is supported by two torsion coil springs 116, 116.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film pack holder, and more particularly, to a film pack holder which is used by mounting a film pack in which a plurality of sheet film units are stacked and stored.

[0002]

2. Description of the Related Art Conventionally, as a film pack holder of this type, there is one disclosed in JP-A-5-341378. This film pack holder is attached to the exposure frame of a large format camera after opening the lid of the film pack holder and mounting it in the holder body.
When taking a picture, the pulling lid of the film pack is opened and the first sheet film unit is exposed through the exposure opening of the lid.

The holder body and the lid are respectively provided with a pair of claws for locking the holder body and the lid, and the pair of claws provided on the lid side are plate-shaped slidably arranged on the lid. Are provided at both ends of the claw main body. The claw body is biased in the locking direction with the claw on the holder body side by a biasing member of a torsion coil spring provided at the center of the claw body, and a knob provided at the center is provided. The pressing operation causes the sliding movement in the unlocking direction against the biasing force of the torsion coil spring.

[0004]

However, the film pack holder is unstable because the claw main body is supported only by one torsion coil spring, and the torsion coil spring is attached when the knob is pressed. There is a drawback that it may not be able to be unlocked because it may swing around the part and may not slide smoothly.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a film pack holder capable of reliably unlocking the lid and the holder body.

[0006]

In order to achieve the above object, the present invention comprises a holder main body and a lid which is openably and closably attached to the upper surface of the holder main body and has an opening for photographing formed on the surface thereof. In a film pack holder in which a film pack for maintaining a sheet film unit housed therein in a light-tight state is incorporated in the holder body, the holder body and the lid are provided with the holder body and the lid. A pair of locking claw members are respectively provided, and one claw member of the claw members is formed at both ends of a plate-like claw main body slidably arranged on the holder main body or the lid. Is urged in a direction of engagement with the other claw member by a pair of urging members provided on both sides of the central part of the claw main body, and the urging member is pressed by pressing the central part. Against the bias of Characterized in that it is slid in the disengaging direction of the other pawl member Te.

[0007]

According to the present invention, when the central portion of the nail main body is pressed, the nail main body resists the urging force of the pair of urging members provided on both sides of the central portion of the nail main body. , And slides in the disengagement direction with the other claw member. This allows
The engagement between the one claw member and the other claw member is released, and the lock between the holder body and the lid is released.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the film pack holder according to the present invention will be described in detail below with reference to the accompanying drawings. First, the film pack to be mounted on the film pack holder of the present invention will be described. As shown in FIG. 1, in the film pack 10, a cap 12 is detachably attached to the front end of a box-shaped pack body 14, and the pack body 14
A plurality of sheet film units 16 are stacked and housed therein. The opening 14A formed on the front surface of the pack body 14 has a handle 18 for opening and closing the opening 14A.
An attached pulling lid 20 is attached. The slide lid 20 is larger than the sheet film unit 16 and has a handle 1
By pushing and pulling while holding 8, the pack body 14
It slides along the groove 22 formed on the inner surface of the side wall. The pack body 14 is provided with a stopper (not shown) for the pulling lid 20, and the pulling lid 20 is locked when the pulling lid 20 is pulled out from the pack body 14 by a certain amount.

As shown in FIG. 2, a claw member 24 biased upward is provided inside the cap 12, and a pair of claws 26, 26 formed on the claw member 24 are provided on the tip side of the lid 20. The pulling lid 20 is locked to the cap 12 by engaging with the locking holes 28, 28 (see FIG. 1) formed. A protrusion 30 is formed on the back surface of the pulling lid 20 on the handle 18 side, and this engages with the stepped portion 31 of the pack body 14 to prevent the pulling lid 20 from moving toward the cap 12 side. As a result, the cap 12 does not come off from the pack body 14 when the tip of the pulling lid 20 is connected to the cap 12. Further, when the pulling lid 20 is pulled out from the pack main body 14 by a certain amount, the locking holes 28, 28 are provided with the claws 2 on the slide frame 56 side described later.
9 and 29 are engaged. As a result, the pulling lid 20 is locked when it is pulled out by a certain amount.

As shown in FIG. 1, the sheet film unit 16 includes a sheet film 32 of 4 × 5 inch size,
The base film side is supported and a sheath 34 made of a thin plate of metal or the like having three sides bent so as to surround the three sides of the sheet film 32. Sheet film 3
It is also possible to form the sheath 34 from plastic if it maintains the flatness of No. 2 and has sufficient strength.

As shown in FIG. 2, for example, seven sheet film units 16 are stacked and housed in the pack body 14, and these sheet film units 16 have a pressure plate spring 36 having one end fixed to the inner wall of the back surface of the pack body 14. It is pressed by the front side (upper side in FIG. 2) by. As a result, the sheet film unit 16 is pressure-bonded to the back surface of the pulling lid 20. The inside of the pack body 14 is divided into two by a partition wall 38.
The room is divided into a room, the sheet film unit 16 is housed in the room on the left side of the room, and the disk 40 for displaying the counter is provided in the room on the right side. A number indicating the number of images to be photographed, for example, "1", "2" ... "7" and an end mark "E" are engraved on the lower surface of the disc 40, and one of these numbers is the pack body. 14 and the film pack holder 50 can be observed through a window (not shown) formed in the holder main body 52. The disk 40 is driven by a mechanism on the side of the film pack holder 50 every time one sheet film unit 16 is photographed. Reference numeral 42,
Reference numeral 44 denotes a light-shielding cloth that blocks outside light from entering through a gap between the sliding contact surface on which the sliding lid 20 is slid and the sliding lid 20.

As shown in FIG. 1, the film pack holder 50 according to the embodiment of the present invention has a holder main body 52 and a lid 54 attached to the upper surface of the holder main body 52 so as to be openable and closable.
And a slide frame 56 slidably mounted in the holder body 52. A photographing opening 58 having a size smaller than that of the sheet film unit 16 is formed on the surface of the lid 54, and the peripheral edge portion of the upper surface of the sheet film unit 16 is brought into contact with the outer peripheral edge portion of the sheet film unit 16 to photograph the sheet film unit 16. A receiving surface 60 for holding the sheet is formed.

Leaf springs 64, 64 ... Are attached to the insides of both side wall portions 62, 62 along the longitudinal direction of the lid 54, respectively. The leaf spring 64 mounts the film pack 10 in the film pack holder 50 and covers the lid 54.
When the pack is closed, the pack body 14 is pressed downward in the figure, and the sheet film unit 16 discharged from the pack body 14 is also pressed down from above.

A ridge 66 is formed near the hinge of the lid 54 as shown in FIG. 2, and a pair of protrusions 68 is formed on the ridge 66. When the lid portion 54 closes the lid 54, the ridge portion 66 engages with the groove portion 70 of the cap 12 and the cap 1
2 can be held in the film pack holder 50, and the projection 68 is provided with the projections 72, 7 of the claw member 24.
The claw 26 can be retracted from the locking holes 28, 28 of the pulling lid 20 by pushing down 2 to disengage the pulling lid 20 from the cap 12.

In the box portion 74 provided on the rear end side of the slide frame 56 shown in FIG. 1, the slide movement of the slide frame 56 is controlled between the disc frame 4 and the holder body 52.
A mechanism for driving 0 is built in. As shown in FIG. 2, the film pack holder 50 has an exposure frame 78 of a large format camera 76 in which the front surface of the photographing opening 58 is indicated by a chain double-dashed line in the drawing.
It is attached in a light-tight manner via the ridges 80 and 82 for positioning.

Further, as shown in FIG. 1, a slide lid lock piece 84 is provided on the rear end surface of the slide frame 56 so as to be slidable in the vertical direction. The lid cover lock piece 84 is held at an upper position and a lower position by a click mechanism (not shown), and when it is located at the upper position, it fits in a groove 86 formed on the back surface of the lid 20. This prevents an inadvertent pulling-out operation of the lid 20 and is safe because the lid 20 does not open even if the film pack 10 is carried while being attached to the film pack holder 50. Further, reference numeral 88 is
The film-shaped holder 50 is an arcuate projection that can be seen from the photographer side when the film pack holder 50 is attached to a large format camera, and a red mark, for example, is displayed when the preparation for photographing is completed.

By the way, in FIG. 1, a pair of claws 90, 90 projecting downward are provided on the rear end side of the lid 54.
The claws 90, 90 engage the claws 92, 92 provided on the holder body 52 side shown in FIG. 7 when the lid 54 is closed, and lock the lid 54 on the holder body 52. As shown in FIG. 3, in the space portion 112 formed at the rear end portion of the lid 54, a long plate 110 that is a claw main body portion is arranged in the width direction of the space portion 112. The claws 90, 90 are formed by bending both ends of the claw 90 degrees downward. The knob 94 shown in FIGS. 1 and 3 is connected to the protrusion 114 formed at the center of the plate 110. Further, two torsion coil springs 116, 116 are arranged at symmetrical positions with the central portion of the plate 110 interposed therebetween. The biasing force of the torsion coil springs 116, 116 biases the plate 110 to the right in the figure. Has been done.

The torsion coil spring 116 is shown in FIGS.
As shown in FIG. 4, a part of the plate 110 is cut and supported by a bending piece 111 bent downward in FIG. In addition, the torsion coil spring 116, as shown in FIG.
4 is arranged in the recess 55A formed on the inner surface of the lower plate 55, and the spring piece 116A is formed on the side surface 5 of the recess 55A.
The plate 110 is pressed and abutted against 5B to urge the plate 110 rightward in the drawing.

As shown in FIG. 3, the torsion coil springs 116, 1 are provided at both ends and the center of the plate 110.
Long holes 118 and 120 are formed along the biasing direction of 16, and the guide pins 122 and 124 implanted in the lid 54 are engaged with the long holes 118 and 120. As a result, the plate 110 is moved along the long holes 118 and 120 as shown in FIG.
The knob 90 is slidable in the left and right directions, and when the knob 94 is pressed in the leftward direction in FIG. 3 against the biasing force of the coil springs 116, 116, the claw 90 moves to the elongated hole 11
8, 120 and the guide pins 122, 124 are moved to the position (disengagement position) shown by the chain double-dashed line in FIG. Further, when the claw 90 is released from the knob 94, the torsion coil springs 116, 116 return the claw 90 to its original position and move it to the position (engagement position) shown by the solid line in FIG. Therefore, the claw 90 is arranged so as to be slidable in the direction of the claw 92.

The pawl 92 is pivotally supported on a shaft 96 as shown in FIG. Further, the claw 92 is biased in the counterclockwise direction in the drawing by the coil spring 98 mounted on the shaft 96, and its lower end portion 92A abuts on the stopper 100 formed on the holder main body 52 side so that the pawl 92 can rotate. Is regulated. The spring force of the coil spring 98 on the claw 92 side is
The spring force is set to be larger than the spring force obtained by adding the spring forces of the torsion coil springs 116 on the claw 90 side.

Next, the operation of the film pack holder 50 constructed as described above will be described. First, the lid 54 of the film pack holder 50 is opened to open the film pack 10
Is mounted in the holder body 52. Next, when the lid 54 is closed as shown in FIG. 5, the taper portion 90A of the claw 90 on the lid 54 side becomes the upper end taper portion 92B of the claw 92 as shown in FIG.
Abut. When the lid 54 is pushed in in this state, the pushing force causes the pawl 90 to move leftward in FIG. 6 against the biasing force of the torsion coil spring 116 (see FIG. 3). Also,
When the pushing force is transmitted from the claw 90, the claw 92 shown in FIG.
Although it tries to rotate in the counterclockwise direction, the spring force of the coil spring 98 on the claw 92 side causes the torsion coil spring 1 on the claw 90 side.
Since it is larger than the spring force of 16, the torsion coil spring 11
It does not move from the position shown in FIG. 5 until the spring force of 6 increases and reaches a predetermined value. The pawl 92 moves the pawl 90 leftward in the figure by a predetermined amount, whereby the torsion coil spring 116 is moved.
When the spring force of reaches the predetermined value, it rotates in the clockwise direction as shown in FIG. As a result, the claw 90 and the claw 92 ride on each other. Then, when the lid 54 is completely closed, as shown in FIG. 7, the claw 90 is twisted and returned to the right in the figure by the urging force of the coil spring 116, and the claw 92 is reversed by the urging force of the coil spring 98. By returning and rotating in the clockwise direction, the edge portion 92C of the claw 92 engages with the claw 90, and the lid 54 is locked to the holder main body 52.

Further, when the lid 54 is closed, as shown in FIG. 2, the protrusion 66 is engaged with the groove portion 70 of the cap 12 to hold the cap 12 between the holder main body 52 and the lid 54. The protrusion 72 is pushed down by the protrusion 68 to move the claw member 24 downward, and the claw 26 of the claw member 24 is disengaged from the locking hole 28 of the pulling lid 20. As a result, the lid 2
The 0 lock is released.

Next, the film pack holder 50 is mounted on the exposure frame 78 of the large format camera 76. And the lid 20
8 is pulled out and completely moved to the position shown in FIG. 8, the locking holes 28, 28 of the pulling lid 20 are engaged with the claws 29, 29 on the slide frame 56 side to restrict the opening of the pulling lid 20, The opening 14A of the pack body 14 is completely opened. Then, the first sheet film unit 16A is pushed up by the pressure plate spring 36. The sheet film unit 16A passes through the opening 14A, is pressed against the receiving surface 60 of the film pack holder 50, and is held at the photographing position.

When the slide lid 20 is returned to its original position, the slide lid 20 is inserted between the first sheet film unit 16A and the second sheet film unit 16B,
The flatness of the sheet film unit 16A at the photographing position is maintained. At this time, the latch mechanism incorporated in the box portion 74 locks the pulling lid 20 to the pack body 14 and releases the engagement between the holder body 52 and the slide frame 56. In addition, a mark indicating the completion of shooting preparation is displayed on the arc-shaped projection 88 seen from the photographer side. When the shutter of the large format camera 76 is released in this state, the first sheet film unit 16A is exposed.

After the first photographing operation is completed in this way, when the handle 18 is gripped and the pulling lid 20 is pulled, the slide frame 56 and the film pack 10 are separated from each other, leaving the cap 12 as shown in FIG. It is integrally pulled out from the film pack holder 50. At this time, the first sheet film unit 16A, which has been photographed, is locked in the same position by the edge portion of the receiving surface 60, so that it passes through the gap between the upper portion of the partition plate 13 and the receiving surface 60 and the pack main body. Get out of 14. The sheet film unit 16A completely pulled out from the pack body 14 is pushed into the bottom portion of the holder body 52 by the urging force of the leaf spring 64, the left end portion is held by the bending plate 110, and the right end portion is packed body 1.
4 is held on the inner wall 14A of the rear surface.

When the film pack 10 is inserted into the holder main body 52 together with the slide frame 56, the sheet film unit 16A passes through the recovery port 15 which is a gap between the lower end of the partition 13 and the rear inner wall 14A. Then, it enters the inside of the sheet 14 and rides on the pressure plate spring 36 to be inserted into the lowermost layer of the unexposed sheet film unit 16. When the film pack 10 is completely inserted into the holder main body 52 in this manner, the second sheet film unit 1
6B is located directly below the lid 20.

Then, the remaining sheet film unit 16 is photographed by the above-mentioned procedure. When the film pack 10 is taken out after photographing, the knob 94 is pressed to release the engagement between the claw 90 and the claw 92. At this time, knob 9
As shown in FIG. 3, the plate 110 which is moved by the pressing operation of No. 4 is supported by the two torsion coil springs 116, 116 which are provided at symmetrical positions with the central portion sandwiched therebetween.
Without swinging, the coil 90 smoothly slides in the disengagement direction against the urging force of the coil springs 116, 116 to disengage the claw 90 and the claw 92 from each other.

Therefore, according to the film pack holder of this embodiment, as compared with the conventional film pack holder in which the plate is unstablely supported by one torsion coil spring,
The holder body 52 and the lid 54 can be reliably unlocked. Further, in this embodiment, as shown in FIG. 4, the torsion coil spring 116 is arranged in the recess 55A of the lower plate 55 of the lid 54, so that the width of the space 112 shown in FIG. 3 can be narrowed. As a result, the plate thickness of the lid 54 becomes thin and the film pack holder 50 becomes compact.

In this embodiment, one claw member 90 is attached to the lid 54.
Although the other claw member 92 is provided on the holder main body 52 side, one claw member 90 is provided on the holder main body 52 side so as to be slidably movable, and the other claw member 92 is provided on the lid 54 side. It may be rotatably arranged.

[0030]

As described above, according to the film pack holder of the present invention, the central portion of the claw main body portion is configured so that the claw main body portion formed with one claw member can be smoothly slid by the pressing operation. Since it is supported by the pair of urging members sandwiching, the holder body and the lid can be reliably unlocked.

[Brief description of drawings]

FIG. 1 is an external view of a film pack holder and a film pack according to the present invention.

FIG. 2 is a sectional view showing a state in which a film pack holder is attached to the camera.

FIG. 3 is a plan view showing a biasing member of a lid-side claw including a partial breakage;

FIG. 4 is a cross-sectional view of essential parts showing a state where the pawl main body and the torsion coil spring are attached to each other.

FIG. 5 is an explanatory view of a main part showing a state in which the lid is closed.

FIG. 6 is an explanatory view of a main part showing a state where a claw on the lid side and a claw on the holder body side are in contact with each other.

FIG. 7 is an explanatory view of a main part showing an engagement state between a lid and a holder main body.

FIG. 8 is a cross-sectional view of the film pack holder and the film pack with a pulling lid pulled out.

FIG. 9 is a sectional view of the film pack holder and the film pack with the film pack pulled out together with the slide frame.

[Explanation of symbols]

 10 ... Film pack 14 ... Pack body 16 ... Sheet film unit 50 ... Film pack holder 52 ... Holder body 54 ... Lid 56 ... Slide frame 90 ... Lid side claw 92 ... Holder body side claw 94 ... Knob 110 ... Plate 116 ... Torsion coil spring

Claims (2)

[Claims] 1. A film pack having a holder main body and a lid which is attached to the upper surface of the holder main body so as to be openable and closable and has an opening for photographing formed on the surface of the holder main body. In the film pack holder, the holder body and the lid are provided with a pair of claw members for locking the holder body and the lid, and one of the claw members is the holder body or the claw member. The claw body is formed at both ends of a plate-like claw body that is slidably disposed on the lid, and the claw body is formed by a pair of urging members provided on both sides of the center of the claw body so that the other claw body is It is urged in the engagement direction with the claw member, and is slid in the engagement release direction with the other claw member against the urging force of the urging member by the pressing operation of the central portion. To fill Mupack holder. 2. A slide frame is slidably provided on the holder body, and the film pack is mounted on the slide frame, and the reciprocating movement of the slide frame moves the exposed sheet film unit from the film pack. 2. The film pack holder according to claim 1, wherein the film pack holder is discharged and pushed into the bottom of the holder body by a pressing member, and then sent to the bottom layer in the film pack.