JPH1090788A - Film winding-up device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily load a Brownie film by providing a guide part guiding the Brownie film with a projection part projecting to the central part of a counter roller. SOLUTION: A movable guide member 10 constituted so that the leading edge of the film 30 is guided and easily inserted in a film leading edge insertion hole 9 of a film winding-up spool 7 is arranged between the spool 7 and the counter roller 8. The guide member 10 is provided with a planar guide plate part 41 and both wing parts 42a and 42b axially supported by the rotary shaft of the roller 8 at both side end parts thereof. Besides, a slender film abutting roller 43 is supported by the tip part of the guide plate part 41 so that it can be axially rotated and the projection part 41c projecting to the roller 8 is formed at the back end part thereof. Thus, the guide plate part 41 of the guide member 10 is pushed downward in accordance with the closing action of a back cover 20 so as to form a space part between the roller 8 and the spool 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film winding device for a camera, and more particularly to a film winding device for winding a brownie film having no perforation on a film winding spool.

[0002]

2. Description of the Related Art Generally, in a film winding device for a camera, a perforation of the film is fitted to a sprocket when the film is loaded, and the sprocket is rotated by a motor so that the film can be fed smoothly. Is reached, the film is pressed against the winding spool by the guide urged toward the winding spool, the perforations engage with the pawls formed on the winding spool, and the film is wound around the winding spool. Thereafter, each time the photographing of each film piece is completed, the sprocket and the film winding spool rotate, and the rotation causes the film to be wound on the film winding spool.

[0003] Such a film winding device is mounted on a camera using a film having a perforation such as a 35 mm film.
In a brownie camera using a brownie film having no perforation, it is difficult to use the above-described apparatus that performs the operation of winding the leading end of the film around the film winding spool by driving a motor.

For this reason, in a conventional brownie camera, when loading a film, the leading end of the film is pulled out with one hand from the film supply spool side, and the film winding spool is rotated with the other hand to rotate the film shaft. The film tip insertion hole is set at a predetermined position, and in this state, the film tip is inserted into the film tip insertion hole.

[0005]

However, the operation of loading the film in such a Broni camera is troublesome, and when the film ends, the leading end of the film is not inserted into the film leading end insertion hole but is located in front of the film winding spool. However, it is considered that a considerable skill is required for the operation since the user gets into the gap between the counter roller and the counter roller. Such a problem of operability has hindered the spread of this type of camera.

The present invention has been made in view of such circumstances, and prevents the tip of a brownie film from getting into a gap between a counter roller and a film winding spool, and prevents the tip of a brownie film from winding up. SUMMARY OF THE INVENTION It is an object of the present invention to provide a film winding device that can be easily wound around a spool and allows even a beginner to easily load a film of a brownie camera.

[0007]

According to the present invention, there is provided a film hoisting apparatus, comprising: a brownie camera having a counter roller disposed adjacent to a film supply side of a film winding spool for winding a film; The diameter of the portion is formed smaller than the diameter of the end portion, and the leading end of the film delivered from the film supply side between the film winding spool and the counter roller is guided to the film leading end insertion hole of the film winding spool. And a plate-like guide portion is provided, and one end edge of the guide portion on the counter roller side is protruded toward the center portion so as to approach the center portion of the counter roller.

Here, the central portion refers to a portion disposed between the two film sliding portions of the counter roller, which are disposed in correspondence with both widthwise side portions of the running film. In addition, it is preferable that the one end edge is curved along the outer surface of the central portion. Preferably, a guide roller for guiding the film is provided at the other end of the guide portion on the film winding spool side, and the guide roller is divided into a plurality of pieces with the other end edge interposed therebetween. .

Further, when the film winding operation is performed by the film winding spool, the guide portion is provided.
It is preferable to be configured to retreat to a position where the operation can be permitted. In addition, it is preferable that the evacuation operation of the guide portion is performed based on an operation of closing a back cover of the camera.

[0010] Further, a first retracting operation in which the guide section retracts to an intermediate retracting position based on a closing operation of a camera back cover, and a rolled-up film according to an increase in a film winding diameter of the film winding spool. It is preferable to be configured to retreat by a second retreat operation pushed out of the device.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic configuration diagram showing the inside of the back surface of a brownie camera equipped with a film winding device according to an embodiment of the present invention. That is, an inner guide rail 3 for running the film (browni film; the same applies hereinafter) while contacting the film surface is extended at each of the upper and lower positions of the aperture 2 opened on the back surface of the camera body 1 of the browni camera. Outer guide rails 4 are provided at each outer position to guide both end surfaces of the film.

The outer guide rail 4 includes a camera back cover 2.
At the time of closing 0, a pressure plate 22 provided on the inner wall of the camera back cover 20 is provided, and a gap (tunnel) for running the film between the pressure plate 22 and the inner guide rail 3 is formed.

On the upper and lower walls at one side end of the camera body 1, there are provided spool holding projections 6 into which a film supply spool around which an unexposed film is wound is loaded. At the other end of the camera body 1, a film winding spool 7 for winding up a film is provided. On the aperture 2 side of the film winding spool 7, the film winding spool 7 and the shaft are mutually connected. A parallel counter roller 8 is provided rotatably. The counter roller 8 is provided with sliding contact portions 8b that are in sliding contact with the film at both ends of the shaft 8a, and the central portion 8c of the counter roller 8 is formed to be smaller than the diameter of the sliding contact portion 8b. The film is a sliding portion 8 of the counter roller 8.
b and is fed in sliding contact with the film, and the counter roller 8 is rotated by the frictional force between the film and the sliding portion 8b.

The film winding spool 7 is provided with a film leading end insertion hole 9 into which the leading end of the film (the leading end of the film leader paper) is inserted. The film winding spool 7 is rotated by a winding spool rotating means using a motor (not shown) as a drive source and a gear train (not shown) as a power transmission mechanism. Further, a mask disk (not shown) having a plurality of through holes formed in the circumferential direction is supported on the shaft 8a of the counter roller 8 so that the mask disk is opposed to the mask disk. LE
The rotation of the counter roller 8 and the number of photographed frames of the film are counted by D and the photodiode.

By the way, the Brownie film used in such a Brownie camera does not have a perforation, and the camera does not have a sprocket fitted to the perforation. Therefore, the perforation is fitted to the sprocket like a normal 35 mm film, and the film cannot be automatically fed by the rotation, and the photographer can use one hand to hold the leading end of the film wound around the film supply spool. The film winding spool 7 is rotated with the other hand while pulling out the upper part of the film to set the film leading end insertion hole 9 in a direction in which the leading end of the film can be easily inserted. In this state, the leading end of the film is pulled out of the film. It is necessary to perform an operation of inserting the distal end insertion hole 9.

However, such operation of inserting the leading end of the film requires considerable skill, and the leading end often enters the gap between the film winding spool 7 and the counter roller 8. Further, if the leading end is not completely inserted, the film is loosened during the winding of the film, and the film becomes thicker, resulting in a poor winding of the film. Therefore, in the apparatus according to the embodiment of the present invention, as shown in FIG. 1, the leading end of the film 30 is guided between the film winding spool 7 and the counter roller 8, and the leading end of the film 30 is moved to the film leading end of the film winding spool 7. A movable guide member 10 is provided so as to be easily inserted into the insertion hole 9.

The movable guide member 10 has a flat guide plate portion 41, and both sleeve portions 42a and 42b which are supported at both end portions of the counter roller 8 by a rotation shaft thereof. A long and thin film contact roller 43 is rotatably supported at the leading end of the guide plate portion 41, and a projecting portion 41c projecting to the counter roller 8 is formed at the rear end. As shown in FIG. 3, the protruding portion 41c is close to the shaft 8a of the central portion 8c of the counter roller 8, and
The upper surface is provided so as not to protrude upward from the outer periphery of the sliding contact portion 8b. An arrow 45 is provided in the guide plate portion 41 to indicate the direction when the film is guided to the film leading end insertion hole 9.

The guide plate 41 and the counter roller 8 are assembled as shown in FIG. First,
Each of the two sliding contact portions 8b is inserted into the hollow bearing member 8d,
The sliding portion 8b and the bearing member 8d are fixed by screws 8e. Next, the sliding contact portion 8b fixed to the bearing member 8d is disposed between the projecting portion 41c of the guide plate portion 41 and the both sleeve portions 42a and 42b, respectively, and formed on the both sleeve portions 42a and 42b. The shaft 8a is inserted into the through holes 42e and 42f. Thereby, the counter roller 8 is rotatably supported by the guide plate portion 41.

The leading end of the film 30 pulled out from the film supply spool is connected to the counter roller 8 and the projection 41.
c, is guided along the guide plate portion 41, and is inserted into the film leading end insertion hole 9 of the film winding spool 7.

The movable guide member 10 is set so that its guide plate portion 41 is located between the counter roller 8 and the film winding spool 7, so that the leading end of the film 30 is moved to the counter roller 8 and the film winding spool. Since the protrusion 41c of the guide plate portion 41 protrudes to the counter roller 8, the leading end of the film 30 is positioned between the counter roller 8 and the movable guide member 10. Is also prevented from getting into the gap. Further, it is possible to prevent a tape or the like affixed in the middle of the film 30 from being caught in these gaps.

Further, the guide plate portion 41 is provided with an arrow 45 for instructing the direction of the film when guiding the film to the film tip insertion hole 9, so that the operator can operate the film 3.
It is possible to recognize at a glance the direction in which the leading edge of the film 30 is pulled out, and the film leading end insertion hole 9 into which the leading end of the film 30 is to be inserted.

When the leading end of the film 30 is inserted into the film leading end insertion hole 9, the movable guide member 10 is set so as to bridge the counter roller 8 and the film winding spool 7, as shown in FIG. However, when the front end of the film 30 is inserted into the film front end insertion hole 9 and the film 30 is wound around the spool 7 in accordance with the rotation of the spool 7 and then the camera back cover 20 is closed, In response to the closing operation of the lid 20, the guide plate portion 41 of the movable guide member 10 is pushed down so that a space is formed between the counter roller 8 and the film winding spool 7.

That is, at the time of the film winding operation of the film 30 by the film winding spool 7, the movable guide member 10 is retracted to the retracted position where the film winding operation is permitted. As a result, the subsequent film winding operation by the film winding spool 7 can be smoothly performed without being disturbed by the movable guide member 10. The retracting operation of the movable guide member 10 includes a first retracting operation in which the guide member 10 is pushed down to the intermediate retracting position by the closing operation of the back cover 20, and a large film winding of the film winding spool 7. The second retracting operation is performed by pushing the rolled film out of the rolled film, that is, toward the film chamber wall 1a according to the diameter.

Hereinafter, the movable guide member 1 will be described with reference to FIG.
0 will be described, and the retracting operation of the movable guide member 10 will be described with reference to FIGS. FIG. 5 is a central sectional view showing the state of the movable guide member 10 together with the counter roller 8 and the film winding spool 7 when the camera back cover 20 is closed. That is, the sleeve portions 42 a and 42 b of the movable guide member 10 are formed in a thin plate shape in a plane perpendicular to the plate surface of the guide plate portion 41, and are supported at both ends of the counter roller 8 by their rotation shafts. ing.

A substantially trapezoidal flat projection 23 is projected from the inner wall surface of the back cover 20 of the camera. With the closing operation of the back cover 20, the tip of the projection 23 is connected to the sleeves 42a, 42a.
The movable guide member 10 rotates around the rotation axis of the counter roller 8 by abutting against and pressing the flange portions 42c and 42d of b, and the retracting operation of the movable guide member 10 is performed.

Between the both end surfaces of the counter roller 8 and both the sleeve portions 42a and 42b, a helical spring 44a is provided.
44b is wound around one end of the guide plate portion 41.
a, 41b, bent portion 41 on the film winding spool 7 side
The guide plates 41 of the movable guide member 10 retracted to the retracted position are applied with a biasing force in the rear direction by the helical springs 44a, 44b.

Further, a long and thin film contact roller 43 is rotatably supported at the center front end portion of the guide plate portion 41, and the movable guide member 10 is moved to an intermediate retreat position (shown by a solid line in FIG. 5). Position), the film contact roller 43 is pushed out of the rolled film by the outer peripheral surface of the rolled film as the film winding shape of the film winding spool 7 increases in diameter. The member 10 is further retracted toward the film chamber wall 1a. In this case, even if the outer peripheral surface of the wound film presses the film contact roller 43,
The film contact roller 43 rolls on the outer peripheral surface, so that the surface of the wound film can be prevented from being damaged.

FIG. 5 shows a state in which the leading end portion is inserted into the film leading end insertion hole 9 of the film winding spool 7, and the film 30 wound around the spool 7 is tensioned by the guide roller 24. It is shown. In the drawing, both end positions of the movable range of the movable guide member 10 are indicated by broken lines, and the rotation angle α of the movable guide member 10 between them is, for example, 45 degrees.

When the camera is loaded with the camera back cover 20 opened, the movable guide member 10 is set in the state shown in FIG. Then, the leading end of the film 30 pulled out from the film supply spool side passes over the counter roller 8, and the movable guide member 10
The film winding spool 7 passes between the guide plate portion 41 and the guide roller 24, is guided by the guide plate portion 41, and is disposed at a position facing the tip of the guide plate portion 41.
Is inserted into the film tip insertion hole 9. The rotation position of the film winding spool 7 in FIG. 6 is a state where the film 30 is rotated by approximately 180 degrees with respect to the position at the time of inserting the leading end of the film, and the film 30 is rotated substantially half way around the film winding spool 7 in accordance with this rotation. It is wrapped around.

A stopper (not shown) for supporting the movable guide member 10 prevents the guide plate portion 41 from moving further to the rear side of the camera than the state shown in FIG. 6 by the urging force of the helix springs 44a and 44b. Are arranged. Thereafter, the film winding spool 7 is rotated, and the film 30 is further wound on the spool 7. When the film loading operation is completed, the camera back cover 20 is closed.

When the camera back cover 20 is closed, the flanges 42c and 42d of the sleeves 42a and 42b are pressed inward by the projections 23 protruding from the inner wall of the back cover 20 as described above. The movable guide member 10 rotates about the rotation axis of the counter roller 8 and retracts to a solid line position (intermediate retract position) shown in FIG. Thus, after this,
It becomes possible to wind up the film 30 on the film winding spool 7 every time the photographing is completed.

Thereafter, when the winding form of the film winding spool 7 is increased in diameter, the outer peripheral surface of the wound film comes into contact with a film contact roller 43 which is supported at the tip of a guide plate portion 41, and gradually. The roller 43 is pressed in the outer peripheral direction of the spool, and when the photographing of the last frame of the film 30 is completed, the movable guide member 10 is retracted to a position as shown in FIG.

Thereafter, when all the films 30 are wound up on the winding spool 7 from the supply side spool, the photographing is completed. After this, the photographer opens the back cover,
And set the empty spool on the supply side to the winding side. This completes the preparation for the next film loading operation.

Next, a second embodiment of the present invention will be described. FIG. 8 is a schematic perspective view showing a second embodiment of the present invention. In FIG. 8, components having the same functions as those of the members of the embodiment shown in FIG. 1 will be represented by numbers obtained by adding 100 to the members given in FIG. 1, and detailed description thereof will be omitted. . FIG. 8 shows only the guide plate portion 141.

In the second embodiment, the edge of the projection 141c has a curved shape along the outer surface of the shaft 8a of the counter roller 8. This makes it possible to guide the film 30 more smoothly than in the first embodiment.

A locking portion 148 for locking the helical spring 144a and a temporary locking portion 14 for temporarily locking the helical spring 144a are provided outside the sleeve member 142a.
6 are formed. The distal end of the guide plate portion 141 is divided into a central portion 141d and end portions 141e and 141f, and two portions are provided between the central portion 141d and the end portion 141e and between the central portion 141d and the end portion 141f. The divided film contact rollers 143a and 143b are rotatably supported. Therefore, the film contact roller 14
3a and 143b are formed to be shorter than the film contact roller 43 of the first embodiment, so that the roller can be easily manufactured.

The guide plate portion 141, the counter roller 8, and the film contact rollers 143a and 143b are assembled as shown in FIG. First, the sliding contact portion 8b
The projection 141c of the guide plate 141 and the two sleeves 142
a, 142b, and both sleeve portions 142a, 14b.
The shaft 8a is inserted into the through holes 142e and 142f formed in the shaft 2a, and the sliding contact portion 8b and the shaft 8a are screwed into the screw 8e.
Fix with. Thus, the counter roller 8 is rotatably supported by the guide plate portion 141.

On the other hand, as shown in FIG.
A U-shaped groove is formed in 141f and the central portion 141d, and the U-shaped grooves of the end portions 141e and 141f are directed upward and the central portion 1d.
The U-shaped groove 41d is open downward. And the central part 1
Film contact rollers 143a and 143b are disposed between the central portion 141d and the end portions 141e and 141f.
The shafts 143c are inserted through the U-shaped grooves d and the U grooves of the end portions 141e and 141f and the film contact rollers 143a and 143b, and the film contact rollers 143a and 143b are rotatably supported by the guide plate portion 141. As a result, the leading end portion of the film 30 is more smoothly guided into the film leading end insertion hole 109 of the film winding spool 107.

The film contact rollers 143a, 143
Since the U-groove is formed in the central portion 141d and the both ends 141e and 141f in order to support the shaft 143c of the 3b so that the shaft can be pivoted, the guide plate portion is compared with the first embodiment in which a through-hole is formed. 141 can be easily formed. Further, since the film contact rollers 143a and 143b are configured to be shorter than in the first embodiment, the strength of the film contact rollers 143a and 143b can be improved, and the molding thereof can be easily performed.

Further, the helical spring 1 is attached to the sleeve 142a.
Since the temporary locking portion 146 for temporarily locking the locking member 44a is formed, the guide plate portion 141 is assembled into the camera after the helical spring 144a is locked to the locking portion 148 and the temporary locking portion 146, and then the rotation is performed. The spring 144a is temporarily locked
By removing the guide plate portion 141 from the camera, the helix spring 144a does not come off when the guide plate portion 141 is assembled to the camera, so that the guide plate portion 141 can be easily assembled to the camera.

The film winding device of the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the above-described embodiment, the movable guide members 10 and 1 are moved according to the closing operation of the camera back cover 20.
The retracting operation of the film guide 10 is started, but the movable guide members 10 and 110 only need to move to the retracted position until the winding diameter of the film winding spool 7 becomes a predetermined size. The evacuation operation can be linked to various operations of the camera. For example, the retreat operation may be performed in conjunction with a winding operation of the film 30.

In the above embodiment, both the sleeves 42a, 42b, 14 of the movable guide members 10, 110 are provided.
The flange portions 42c, 42d, 142a, and 142b that are pressed by the projections 23 of the camera back cover 20 are provided on 2a and 142b.
42b, 142a, 142b, one flange 42
c, 42d, 142c and 142d may be provided. Further, the helical springs 44a, 44b, 144a may be provided on only one side, or may be provided on both sides. Further, the movable guide members 10, 1
The retracted position 10 may be retracted to the position shown in FIG. 5 only by the closing operation of the back cover 20.

[0043]

As described above, according to the film winding device of the present invention, the guide portion for guiding the brownie film is provided between the counter roller and the film winding spool. Because the protruding portion is provided at the center of the counter roller, even in the case of a Broni camera that requires some skill in film loading operation,
By applying the apparatus of the present invention, it is possible to reliably prevent the leading end of the film from slipping into the gap between the counter roller and the film winding spool when the film is loaded, and insert the leading end of the film into the film leading end of the film winding spool. It becomes possible to insert smoothly into the hole. As a result, even a beginner of the Brownie camera can easily load the Brownie film.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a film hoisting device according to a first embodiment of the present invention.

FIG. 2 is a rear perspective view showing the inside of a camera equipped with the film hoisting device shown in FIG.

FIG. 3 is a center sectional view for explaining a configuration of a guide plate portion of the device shown in FIG. 1;

FIG. 4 is an exploded perspective view for explaining in detail a configuration of a guide plate portion of the apparatus shown in FIG. 1;

FIG. 5 is a central sectional view for explaining the film winding apparatus shown in FIG. 1 in detail (when film winding is started);

FIG. 6 is a central sectional view for explaining the film winding device shown in FIG. 1 in detail (when the film is loaded);

FIG. 7 is a central sectional view for explaining the film winding apparatus shown in FIG. 1 in detail (when film winding is completed);

FIG. 8 is a schematic perspective view showing a film hoisting device according to a second embodiment of the present invention.

9 is an exploded perspective view for explaining in detail a configuration of a guide plate portion of the device shown in FIG. 8;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Camera body 1a Film chamber wall part 2 Aperture 7, 107 Film winding spool 8, 108 Counter roller 9, 109 Film tip insertion hole 10, 110 Movable guide member 20 Back cover 23 Projection 24 Guide roller 30 Film 41, 141 Guide plate Portions 41a, 41b Bending portions 41c, 141c Projecting portions 42a, 42b, 142a, 142b Sleeve portions 42c, 42d, 142c, 142d Flange portions 43a, 143a, 143b Film contact rollers 44a, 44b, 144a Hook spring 146 Stop part 148 Lock part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Fukuda 2-26-30 Nishiazabu, Minato-ku, Tokyo Fujisha Shin Film Co., Ltd.

Claims (6)

[Claims] 1. A brownie camera having a counter roller disposed adjacent to a film supply side of a film winding spool for winding a film, wherein a diameter of a central portion of the counter roller is formed smaller than a diameter of an end portion. A plate-like guide portion for guiding the leading end of the film delivered from the film supply side to the film leading end insertion hole of the film winding spool, between the film winding spool and the counter roller; A film hoisting device characterized in that one end edge on the counter roller side is protruded toward the central portion so as to approach the central portion of the counter roller. 2. The film hoisting device according to claim 1, wherein said one end edge portion is curved along the outer surface of said central portion. 3. A guide roller for guiding the film is provided at the other end of the guide section on the film winding spool side, and the guide roller is divided into a plurality of parts with the other end edge interposed therebetween. 3. The film hoisting device according to claim 1, wherein: 4. The apparatus according to claim 1, wherein the guide section is retracted to a position where the operation can be permitted when the film winding operation is performed by the film winding spool. 4. The film hoisting device according to claim 2 or 3. 5. The film hoisting device according to claim 4, wherein the retracting operation of the guide portion is performed based on a closing operation of a camera back cover. 6. A first retracting operation in which the guide section retracts to an intermediate retracting position based on a closing operation of a camera back cover, and increasing a diameter of a film wound around the film winding spool. 5. The film hoisting device according to claim 4, wherein the film retracting device is configured to be retracted by a second retracting operation that is pushed out of the wound film in response to the following.