JPH06186631A - Film holder - Google Patents

Abstract

PURPOSE:To provide a film holder allowing a photographic film package to be easily and safely drawn out. CONSTITUTION:The clip 5 of the photographic film package 1 is engaged with an engagement pawl 48 in the film holder main body 12. At a photographing time, a light shielding envelope is drawn out and a photographic film F is exposed at an exposure aperture part 26. When the photographing is finished, the light shielding envelope is housed and a main body part is moved by a manual pressing lever 52. Then, the pawl 48 is retreated from an engagement position by an engagement releasing pawl 62 and a stopper plate 36 is retreated from an engagement position with a stopper tape. At this time, the returning movement of the main body part is locked by a lock plate 66. That means, even when a hand operating the lever 52 is released from the lever 52, the operation is not obstructed. Next, when the package 1 is drawn out from the main body 12, the lock plate 66 is pressed by a leaf spring 34 when the clip 5 passes, on the spring 34 in the midst of drawing and returned to a home position. Thus, the lock of a release lever 18 is released and moved to be returned to the home position by the pressing force of the spring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film holder,
In particular, the present invention relates to a film holder mounted on the back of a camera and capable of taking in and out a photographic film package.

[0002]

2. Description of the Related Art As a professional photographic film, a photographic film package in which a sheet-shaped photographic film having a relatively large size is housed in a light-shielding envelope in a light-tight manner is known. The photographic film package is configured by inserting a film unit into a light-shielding envelope, and the film unit includes the photographic film and a carrier sheet. Also,
A clip is attached to the leading edge of the film unit, and this clip can close the insertion port of the light-shielding envelope when the film unit is stored in the light-shielding envelope.

A retaining tape is attached to the light-shielding envelope, and the retaining tape engages with a stopper plate in a film holder which will be described later. The photographic film package is inserted into a film holder attached to the back of the camera, with the clip as the tip, and the clip is locked in the film holder body. At the time of taking a photograph, the rear end of the light-shielding envelope is pinched with a finger to pull out only the light-shielding envelope, and the photo film is exposed from the exposure opening formed in the film holder. When the photo-taking is completed, the light-shielding envelope is pinched with a finger and pushed in, the insertion port of the light-shielding envelope is closed with a clip, and the film unit is stored in a light-tight manner. Then, while the release lever is operated and held at the release position, the rear end of the light-shielding envelope is pinched with a finger, and the light-shielding envelope is pulled out from the film holder together with the film unit.

Conventionally, a film holder of this type is constructed by providing a film holder body with a pressing plate, an engaging claw, a stopper plate, a release lever and the like. The pressing plate presses and holds the photographic film package inserted in the film holder main body toward the exposure opening, and always operates toward the exposure opening unless the release lever is operated and held at the release position. Being energized.

The engaging claw and the stopper plate are respectively engaged with the clip of the film unit and the retaining tape to prevent the film unit from being taken out together with the light-shielding envelope at the time of photographing. It is to be held in the holder. On the other hand, the release lever releases the pressing of the pressing plate, the engagement of the engaging claw, and the engagement of the stopper plate at the same time. By operating and holding the release lever at the release position, the pressing plate is released. Is moved in the direction of retreating from the film unit, and the engaging claw is moved in the direction of releasing the clip. As a result, the photographed film package that has been photographed can be pulled out from the film holder body.

[0006]

However, in the conventional film holder, when the photo film package is pulled out from the film holder body, the release lever must be operated with one hand and the photo film package must be taken out with the other hand. . Therefore, when pulling out the photo film package, unless the release lever is carefully operated and held until the photo film package is completely pulled out, the clip is caught by the stopper plate near the doorway of the film holder and the light-shielding envelope falls out. An accident occurs in which the film that has been shot is exposed to light.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a film holder capable of easily and safely pulling out the photographic film package.

[0008]

In order to achieve the above object, the present invention provides a film unit in which a clip is attached to the leading edge portion of a photographic film and a leader portion is fixed to the trailing edge portion, and the clip unit. Equipped with an insertion opening that is closed by, and a retaining prevention member near the insertion opening.
A film holder for storing a photographic film package, which comprises a light-tight envelope for storing the photographic film in a light-tight manner, and a film holder in which an entrance / exit of the photographic film package and an exposure opening for exposing the photographic film are formed. A main body, a first engaging member that engages with the clip and locks the film unit in the film holder main body when the photo film package is inserted into a final position in the film holder main body, and a film holder. A second engaging member that is provided inside the main body and that is locked to the retaining member for the light-shielding envelope, and a pressing plate that is disposed inside the film holder main body and presses the film unit toward the exposed opening. And the film holder body is urged in the direction of pulling out the photo film package to move it against this urging force. The release lever for releasing the lock of the film unit of the first engaging member and the lock of the retaining member for the second engaging member, and the release lever interlocking with the release operation of the release lever. And a lock member that locks the engagement member at the release position and releases the lock of the release lever when the photographic film package is pulled out or inserted by a predetermined amount.

[0009]

The operation of taking in and out the photographic film package using the film holder of the present invention will be described. (1) First, the photo film package is inserted from the entrance / exit of the film holder body with the clip at the tip.

(2) When the photographic film package is inserted and arranged at the final position, the clip is engaged with the first engaging member to lock the film unit in the film holder body. (3) Next, when taking a picture, the light-shielding envelope is pulled out from the film holder body to a position where the retaining member is engaged with the second engaging member, and the film unit is moved to the first position.
Since it is held by the engaging member, the photographic film of the film unit exposes the exposure opening. The film surface of the film unit is held at the exposure position by being pressed toward the exposed opening by the pressing plate.
The photo film is taken in this state.

(4) Next, when the photographing is completed, the light-shielding envelope is stored in the film holder body, and the film unit is stored in the light-shielding envelope. (5) Next, the release lever is moved against the urging force to release the engagement of the first engaging member with the clip, and at the same time, engage the second engaging member with the retaining member. Also cancel. At this time, the release lever is locked by the lock member at the releasing position of the engaging member.

(6) When the engagement with the clip and the engagement with the retaining member are released, the photographic film package is pulled out from the film holder body. The release lever is unlocked by the lock member when the photo film package is pulled out from the engaging member by a predetermined amount or when the next photo film package is inserted, and then returned to the original position by the urging force. Moving.

Further, a mark indicating that the release lever is locked at the release position is provided on the film holder body so that the first engaging member engages with the clip and the second engaging member. It can be easily identified that the engagement with the retaining prevention member has been released.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the film holder according to the present invention will be described in detail below with reference to the accompanying drawings. First, the photographic film package used in the film holder of the present invention will be described.

As shown in FIG. 9, the photographic film package 1 comprises a film unit 2 shown by a dotted line in the drawing and a light-shielding envelope 3. The film unit 2 has a photographic film F, and a clip 5 is fixed to the leading edge portion (left side in the drawing) of the photographic film F via a first carrier sheet 4. As shown in FIG. 10, the clip 5 has a substantially V-shaped cross section. Further, as shown in FIG. 9, a trapezoidal second carrier sheet 6 is detachably joined to the rear edge portion (right side in the drawing) of the photographic film F.
The second carrier sheet 6 is located near the rear end portion of the light-shielding envelope 3 when the film unit 2 is stored in the light-shielding envelope 3.

The light-shielding envelope 3 is made of a light-shielding member such as cardboard, and the film unit 2 is inserted and removed in the direction of the arrow in the drawing from an insertion opening (not shown) on the left side. Also,
When the film unit 2 is housed in the light-shielding envelope 3, the insertion port is fitted into the clip 5 and closed. As a result, the photo film F is prevented from being exposed. Further, a band-shaped stopper tape 7 is bonded in the transverse direction of the light-shielding envelope 3 near the tip of the light-shielding envelope 3.

FIG. 1 is a plan view showing an embodiment of a film holder 10 according to the present invention, and FIGS. 2 and 3 are film holders 10.
4 is a sectional view of the film holder. The film holder 10 includes a film holder body 12, an engaging plate 14, a pressing plate 16, a release lever 18 of the photographic film package 1, and a lock mechanism 2 of the release lever 18.
It has 0 and so on.

First, the film holder body 12 will be described. As shown in FIG. 1, the film holder body 12 is
The upper lid 22 and the bottom lid 24 form a box. A rectangular exposed opening 26 is formed on the upper surface of the film holder body 12, that is, on the surface of the upper lid 22. An entrance / exit 28 for the photographic film package 1 is formed at the right edge of the film holder body 12 in FIG. .

A roller 30 is arranged near the entrance 28 of the upper lid 22, as shown in FIG. This roller 30
Is rotatably attached to the inner surface of the upper lid 22 via bearings 32, 32 attached to both ends. Also,
As shown in FIG. 4, the roller 30 is pressed and abutted on the surface of a leaf spring 34 screwed near the entrance 28 of the bottom lid 24 shown in FIG. As a result, no light enters the film holder body 12 from the entrance 28.

An elongated stopper plate 36 is attached near the roller 30 as shown in FIG. This stopper plate 36 has a side portion 38 on the roller 30 side supported by abutting against a corner portion 40 formed on the inner surface of the upper lid 22 shown in FIG. 4, and when the light shielding envelope 3 is pulled out as shown in FIG. It contacts the stopper tape 7. As a result, the light-shielding envelope 3
Is prevented from coming off from the film holder body 12. Also,
As shown in FIG. 3, the stopper plate 36 has projecting pieces 42, 42 formed at both ends thereof inserted into the rectangular openings 44, 44 of the release lever 18. As a result, when the release lever 18 slides leftward in the drawing, the stopper plate 36 rotates in the clockwise direction in FIG. 6 about the side portion 38 as a fulcrum, and the stopper plate 7 moves to the position shown in FIG. Is retracted from the contact position with.

Next, the engagement plate 14 will be described. The engagement plate 14 is screwed to the bottom lid 24 as shown in FIG. A pair of leaf springs 4 is provided on both side edges of the engaging plate 14.
6, 46 ... Are extended integrally. These leaf springs 46,
46 presses the pressing plate 16 toward the exposed opening 26 of the film holder body 12 as shown in FIG. Further, three engaging claws 48, 48, 48 are provided at predetermined intervals at the left end portion of the engaging plate 14 in FIG. These engaging claws 48, 48, 48 are engaged with the clip 5 of the photographic film package 1 inserted at the final position in the film holder body 12 as shown in FIG.

Next, the pressing plate 16 will be described. As shown in FIG. 2, the pressing plate 16 is formed in a rectangular shape and is held between the engaging plate 14 and the exposure opening 26. The pressing plate 16 has the leaf springs 46, 46 of the engaging plate 14 as described above.
Is pressed and biased toward the exposed opening 26. As a result, the pressing plate 16 exposes the photographic film package 1 inserted in the film holder body 12 to the exposure opening 26.
The pressure can be biased toward.

Next, the release lever 18 will be described. As shown in FIG. 3, the release lever 18 is composed of a plate-shaped main body 50 and a hand push lever 52. The main body 50 has springs 58 attached between hooks 54, 54 bent near the openings 44, 44 and pins 56, 56 planted in the bottom lid 24.
The urging force of 58 urges the photographic film package 1 in the right direction in the drawing, that is, in the drawing direction of the photographic film package 1.

The hand pushing lever 52 is screwed to the right end of the main body 50 through an opening 60 formed in the bottom lid 24. Therefore, by operating the hand push lever 52, the main body 50 can be moved leftward against the biasing force of the springs 58, 58. On the other hand, three disengagement claws 62, 62, 62 are formed by bending at the left end edge of the main body 50 in the figure. These disengagement claws 62, 62, 62 are, as shown in FIGS. 1 and 4,
It is located above the bases of the engaging claws 48, 48, 48 of the engaging plate 14. Therefore, the engagement release claws 62, 62, 62 are
When the main body 50 is pushed by the hand push lever 52 and slid to the left in the figure, the main body 50 comes into contact with the engaging claws 48, 48, 48 and the engaging claws 48, 48, 48 are shown in FIG. It can be retracted from the engagement position with the clip 5 of 1.

Next, the lock mechanism 20 will be described.
As shown in FIG. 3, the lock mechanism 20 has a leaf spring 64 and a lock plate 66. This lock plate 66 is
It is arranged in the rectangular concave portion 68 formed in the above through the leaf spring 64. Further, U-shaped projecting pieces 70, 70 are formed on both sides of the lock plate 66 by bending. The projecting piece 7
As shown in FIG. 4, the groove portions 72, 72 formed in the holes 0, 70 are engaged with the rectangular opening portion 74 formed in the main body portion 50 of the release lever 18.

Further, the lock plate 66 is provided with the protruding pieces 70, 7 when the main body 50 is moved leftward in the drawing (disengagement direction).
Since the opening 74 is located above 0, the leaf spring 64
By the urging force of, the projection 74 is projected from the opening 74 as shown in FIG. As a result, the return movement of the release lever 18 is locked by the protruding pieces 70, 70. Also, the lock plate 6
As shown in FIG. 8, 6 is pushed by the leaf spring 34 due to the elastic deformation of the leaf spring 34 that occurs when the clip 5 passes between the roller 30 and the leaf spring 34, and returns to the original position shown in FIG. . As a result, the release lever 18 is released from the lock, so that the release lever 18 returns to the original position shown in FIG. 4 by the biasing force of the springs 58, 58.

Next, the operation of taking in and out the photographic film package 1 using the film holder 10 constructed as described above will be described with reference to FIGS. 4 to 8. (1) First, as shown in FIG. 4, the photographic film package 1 is made into a film holder main body 12 with the clip 5 at the tip.
It is inserted from the entrance 28 into the inside. (2) When the photographic film package 1 is inserted and arranged at the final position as shown in FIG. 5, the clip 5 engages with the engaging claws 48, 48, 48 of the engaging plate 14 and the film unit 2
Are held in the film holder body 12.

(3) Next, at the time of photographing, as shown in FIG. 6, the light-shielding envelope 3 is pulled out from the film holder main body 12 to a position where the stopper tape 7 engages with the stopper plate 36. Since the film 2 is held by the clip 5, the photographic film F of the film unit 2 is exposed at the exposure opening 26. This film unit 2
Is pressed by the pressing plate 16 toward the exposure opening 26, so that the photographic film F is photographed while being held at the exposure position.

(4) Next, when the photographing is completed, as shown in FIG. 7, the light-shielding envelope 3 is housed in the film holder body 12, and the film unit 2 is housed in the light-shielding envelope 3. (5) When the film unit 2 is stored in the light-shielding envelope 3,
The main body 50 of the release lever 18 is slid to the left in the figure by operating the hand push lever 52, and the engaging claws 48, 48, 48 are connected to the clip 5 by the engagement releasing claws 62, 62, 62 of the main body 50. Retract from the engagement position. At this time, the return movement of the main body portion 50 of the release lever 18 is locked because the lock plate 66 is engaged with the opening portion 74. That is, even if the hand operating the hand push lever 52 is released,
Since the release lever 18 is locked at that position, it does not hinder the operation.

At this time, the stopper plate 36 is also retracted from the contact position with the stopper tape 7. (6) Next, when the engagement between the clip 5 and the stopper tape 7 is released, the photographic film package 1 is pulled out from the film holder body 12. When the clip 5 passes over the leaf spring 34 while the photographic film package 1 is pulled out, the locking plate 66 is pushed by the leaf spring 34 as shown in FIG. 8 and returns to the original position shown in FIG. . As a result, the release lever 18 is unlocked and
The springs 58, 58 are interlocked with the return movement of the lock plate 66.
The urging force (see FIG. 3) returns to the original position shown in FIG. Further, the stopper plate 36 also returns to its original position.

Therefore, according to the film holder 10 of the present invention, since the release lever 18 is locked after the releasing operation, the operation of pulling out the photographic film package can be facilitated.
And it can be done safely. Further, since the operation of taking in and out the photo film package 1 can be performed with one hand, the troublesome operation can be eliminated as compared with the conventional film holder which requires the use of both hands when taking out the photo film package 1. It is possible to guarantee the reliable withdrawal of the photographic film package 1.

Further, the film holder body 12 shown in FIG.
A mark 76 indicating that the release lever 18 is locked at the release position is provided in the vicinity of the hand push lever 52. This mark 76 is provided at a position where it is exposed to the outside when the hand push lever 52 is pushed. Therefore, this mark 7
Whether or not 6 is visible makes it possible to easily identify whether or not the engagement claw 48 is disengaged from the clip 5.

In this embodiment, the release lever 18 is moved back when the photographic film package 1 is pulled out. However, the present invention is not limited to this, and the release lever 18 is inserted when the next photographic film package 1 is inserted. The 18 may be moved back.

[0034]

As described above, according to the film holder of the present invention, since the release lever is locked after the release operation, the photographic film package can be pulled out easily and safely, and the photographic film package can be taken in and out. Since the operation can be performed with one hand, the troublesome operation can be eliminated as compared with the conventional film holder which requires the use of both hands when pulling out the photo film package.

Further, by marking the film holder body with a mark indicating that the release lever is locked at the release position, the engagement of the first engagement member with the clip and the engagement of the second engagement member. It is possible to easily identify that the engagement with the retaining member is released.

[Brief description of drawings]

FIG. 1 is a plan view including a partially broken portion of a film holder according to the present invention.

FIG. 2 is an assembly view of a film holder according to the present invention.

FIG. 3 is an assembly view of a film holder according to the present invention.

FIG. 4 is a sectional view taken along the line AA in FIG.

FIG. 5 is an operation explanatory view of the film holder according to the present invention.

FIG. 6 is an operation explanatory view of the film holder according to the present invention.

FIG. 7 is an operation explanatory view of the film holder according to the present invention.

FIG. 8 is an operation explanatory view of the film holder according to the present invention.

FIG. 9 is a plan view of a photographic film package used in the film holder according to the present invention.

FIG. 10 is a side view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Photo film package 2 ... Film unit 3 ... Shading envelope 5 ... Clip 10 ... Film holder 12 ... Film holder main body 14 ... Engagement plate 16 ... Pressing plate 18 ... Release lever 20 ... Lock mechanism 22 ... Top lid 24 ... Bottom lid 26 ... Exposed opening 28 ... Doorway 36 ... Stopper plate 48 ... Engaging claw 52 ... Hand pushing lever 62 ... Engagement releasing claw 76 ... Mark

Claims (2)

[Claims] 1. A film unit having a clip attached to the leading edge portion of a photographic film and a leader portion fixed to the trailing edge portion thereof, and an insertion opening closed by the clip and being pulled out near the insertion opening. In a film holder containing a photographic film package, which comprises a light-proof envelope containing a photographic film in a light-tight manner with a stop prevention member, an entrance / exit for the photographic film package, and an exposure opening for exposing the photographic film. And a first holder for engaging the clip and locking the film unit in the film holder body when the photographic film package is inserted in the final position in the film holder body. And a second member provided in the film holder body and locked with the retaining member for the light-shielding envelope. A coupling member, a pressing plate disposed in the film holder main body and pressing the film unit toward the exposure opening, and biased in the film holder package drawing direction in the film holder main body to resist the biasing force. And a release lever that releases the locking of the film unit of the first engaging member and the locking of the retaining member of the second engaging member by moving the first engaging member and the release lever. The release lever is locked at the release position of the engaging member, and the release lever is unlocked when the photographic film package is pulled out or inserted by a predetermined amount. holder. 2. The film holder according to claim 1, wherein a mark indicating that the release lever is locked at the release position is provided on the film holder main body.