JPH0443881Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a disk film attachment mechanism in a photographic developing machine.

During the disk film development process, when the disk film is immersed in the processing solution, a mounting shaft fixed to the tip of the rotating shaft is inserted through the center boss of the disc film, and the film is mounted on the mounting shaft. In order to prevent the plurality of disk films from being removed from the mounting shaft, some kind of mechanism is required on the mounting shaft.

The present invention resides in a disk film mounting mechanism intended to prevent the disk film from being removed from the mounting shaft and to simplify the work of mounting the film onto the mounting shaft.

(Prior art) Conventionally, in the development process of disk film,
In order to immerse the film in the processing solution, the fifth
As shown in the figure, the rotation axis for rotating the film, the fixed axis for fixing the film, etc.
A collar-shaped stopper 52 is provided at the end of the work shaft 51.
is fixed to the end of the working shaft 51, and a pin 55 is screwed to the end of the working shaft 51, into which a plurality of disk films 54, 54 are inserted with their boss portions 54' overlapped. Then, work axis 5
A disk film 54 is attached to the shaft end of the shaft.

In addition, in the mechanism for attaching the disk film to the end of the working shaft shown in FIGS. 6 and 7, a mounting shaft 53 is fixed to the end of the working shaft 51 via a collar-shaped stopper 52. A plurality of engagement grooves 56 are carved in the axial direction on the surface of the shaft 53, and the center boss portions 54' of the plurality of disc films 54 are
After the mounting shaft 53 is inserted, a disc-shaped cap 57 equipped with an engagement spring 58 is installed from the shaft end of the mounting shaft 53, and the disc films 54, 54
After fully embedding into the stopper 52 side,
An engagement spring 58 on the cap 57 engages with one of the engagement grooves 56 on the mounting shaft with its elastic force,
A disk film 54 is attached to the shaft end of the working shaft 51.

(Problems to be Solved by the Invention) In order to prevent the film from being exposed to light, the work of attaching the disk film to the end of the working shaft is carried out in a dark box, only by feeling around. At the shaft end of the work shaft installed in the magazine, etc.
It is desired that the member for attaching the disk film and preventing its removal is mechanically simple and that the attached state can be easily checked by groping, and that the work of attaching the film is also simple.

In this respect, the pin 55 to which the film is attached shown in FIG. 5 is completely separated from the working shaft 51, and the engagement spring 5 shown in FIGS.
Since the disc-shaped cap 57 equipped with 8 is completely separated from the mounting shaft 53 fixed to the end of the working shaft, it is difficult to grope the film using these separated parts in the dark box. Installation work is difficult, and sufficient care must be taken to ensure that these parts do not fall off.

The present invention solves the above-mentioned problems by equipping the shaft end of the work shaft with a mounting member that also serves to prevent the film from coming off the work shaft end. group simplification,
It is also an object of the present invention to provide a mounting mechanism that enables quick mounting.

(Means for solving the problem) In order to achieve this objective, the present invention has the following configuration.

That is, the disk film mounting mechanism in the photo developing machine according to the present invention has a retainer formed by bending a spring wire into a U-shape at the end of the mounting shaft that passes through the center boss of the disk film and attaches the film. The small rod is pivotally mounted so that it can rotate, and the small rod is fixed on the extension of the mounting shaft and at a position perpendicular to the mounting shaft using two orthogonal notches formed on the mounting shaft. It has a configuration in which the opposing member is directly or indirectly press-fitted into the recessed portion by using the elastic force of the spring possessed by the small retaining rod.

(Function) In the present invention, when the disk film is attached to the mounting shaft fixed to the end of the working shaft, the spring wire pivotally attached to the end of the mounting shaft is bent into a U shape to prevent it from coming off. Stand the small rod on the extension line of the mounting shaft, and use the elastic force of the spring to fit it into the notch-like recess on one side of the mounting shaft to keep it stationary on the extension line. The rod is then passed through the mounting shaft, and after a predetermined number of films are attached to the mounting shaft, the small retaining rod is moved to the other side at a position perpendicular to the mounting shaft at 90° with the pivot point as the fulcrum. The small retaining rod, which is fitted into the notch-like recess of the disc film and is in a laid-down state orthogonal to the mounting shaft, engages with the boss surface of the film mounted in a comb shape on the mounting shaft, and the disc film is prevents it from being removed from the mounting shaft.
On the other hand, when removing the film from the mounting shaft, the small retaining rod that is perpendicular to the mounting shaft is turned and positioned on the extension line of the mounting shaft, and the film is released from the mounting shaft and the small retaining rod that follows it. and escape.

(Example) Next, a specific example of the disk film attachment mechanism in a photo developing machine according to the present invention will be described with reference to the drawings.

[Example 1] Fig. 1 is a front view showing how the disk film is attached to the end of the working shaft, and Fig. 2 is an exploded perspective view of a small retaining rod formed by the mounting shaft and a spring wire. In the figure, reference numeral 1 is a working shaft, which may be a rotating shaft or a fixed shaft depending on the film development processing mechanism, and at the end of the working shaft 1 there is a shaft that regulates the attachment area of the disk film 4. A mounting shaft 3 is fixedly mounted via an annular stopper 2.

An angled notch 5 in the axial direction is formed in a part of the tip of the mounting shaft 3, and this notch 5 allows
A vertical wall 6 and a horizontal wall 7 are formed. Furthermore, in the axial direction of the mounting shaft 3, there is a vertical hole 8 extending parallel to the vertical wall 6 and having an oval shape when viewed from the end, and whose depth reaches the horizontal wall 7.
A pair of bearing holes 9, 9 extending parallel to the vertical wall 6 on both sides are connected at the deepest part of the vertical hole 8.

Further, from the central part of the oval vertical hole 8 to the vertical wall 6, a pivot opening 11 of a small retaining rod, which will be described later, is opened, leaving fitting parts 10, 10 on both sides of the vertical hole 8, and further, In a part of the innermost part of this turning opening 11, there is a pair of notch-shaped fitting parts 12, 12 extending from the turning opening 11 on both sides in contact with the horizontal wall 7 forming the angle-shaped notch 5. They are installed consecutively.

Further, on the circumferential surface of the mounting shaft 3, there is a protruding protrusion 13 for preventing rotation of the film, which is fitted into a notch-shaped recess formed in the center boss 4' of the film 4 extending in the axial direction. A protruding pawl 14 is provided on the circumferential surface opposite to the shaped notch 5 and substantially on the same plane as the horizontal wall 7 of the notch 5 to prevent the film from tilting.

Reference numeral 16 denotes a small retaining rod made by bending a spring wire into a U-shape, and both ends of the bent spring wire are bent outward to form a pair of supporting legs 17, 17. This retaining rod 16 is compressed inwardly against the spring elasticity biased toward the outside, and is inserted into the vertical hole 8 from the support legs 17, 17 side, and the support legs 17, 17 are inserted into the deepest part of the vertical hole 8. The pair of support legs 17, 17 are inserted deeply into the bearing holes 9, 9, respectively, by releasing the elastic force of the small rod 16 to prevent them from coming out. The small rod itself expands outward and is press-fitted into a pair of fitting parts 10, 10 provided on both sides of the vertical hole 8, and the small rod 16 is fixed on an extension of the axis of the mounting shaft 3. , to ensure the fixed position of the small retaining rod when attaching and removing the disk film 4.

Next, attach this small stopper 16, and attach the mounting shaft 3.
When functioning to prevent the disk film 4 mounted above from being removed from the mounting shaft 3, the small retaining rod 16 located on the extension of the axis of the mounting shaft is compressed inward against spring elasticity. Seshime et al.
Using the support legs 17, 17 as a fulcrum, rotate the small retaining rod 16 through the pivot opening 11 by 90° toward the angle-shaped notch 5, and then release the small retaining rod 16 compressed inward, and the retaining rod 16 will be removed. The small stopper rod 16 expands outward by its own spring elasticity, presses into a pair of fitting parts 12, 12 extending on both sides at the deepest part of the turning opening 11, and is perpendicular to the mounting shaft 3. , engages with the boss portion of the disc film 4 to secure a position for supporting the film.

[Embodiment 2] FIG. 3 is a diagram corresponding to FIG. 1 showing another embodiment, and FIG. 4 is a detailed perspective view of a part of FIG. It is formed by bending it into a U-shape, and unlike the small retaining rod 16 in the above-mentioned embodiment-1, it has a structure in which spring elasticity is biased inward, and both ends of the bent spring wire are A pair of supporting legs 27, 27 are bent inward.
is formed.

A pair of left and right vertical groove-like recesses 20, 20 extending in the axial direction of the mounting shaft 23 are provided on the circumferential surface of a portion near the tip of the mounting shaft 23 fixed to the end of the work shaft 21. Continuing from the inner end of the vertical groove-like recess 20, horizontal groove-like recesses 22, 22 are carved in the orthogonal direction, respectively, and the inward left and right grooves 22, 22 are carved in the orthogonal parts of the vertical and horizontal groove-like recesses 20, 22. A pair of bearing holes 29, 29 are bored.

25 is a protrusion extending in the axial direction on the circumferential surface of the mounting shaft for preventing rotation of the disk film 24 mounted on the mounting shaft 23; 28 is located on the opposite side of the protrusion; This is a claw protruding from a horizontal surface that substantially coincides with the film to prevent the film from tilting. The inward supporting legs 27, 27 are connected to the bearing holes 29, 29.
The small retaining rod 26 press-fitted into the vertical groove-shaped recess 20
By placing it in the direction of the axial line extension of the mounting shaft 23, you can control the film mounting and removal work conditions.Also, by turning the small retaining rod 26 by 90 degrees, it can be press-fitted into the horizontal groove-shaped recess 22. By ensuring a perpendicular position with respect to the mounting shaft 23, the disc film 24 mounted on the mounting shaft 23 is prevented from coming off from the mounting shaft 23.

In addition, the edges forming the vertical groove-like recesses 20 and the horizontal groove-like recesses 22 are provided with a small radius in order to facilitate the removal of the small retaining rod 26 from each recess due to the rotational movement. This is desirable.

(Effects of the invention) In the present invention, a small stopper for preventing the film from falling off is pivotally attached to the end of the mounting shaft on which the disc film is mounted. Even when I was fumbling around in a dark box when installing it, no parts fell off.
In addition, it is easy to attach and remove the film by placing the small stopper on the axis of the mounting shaft, and it is effective in preventing the film from coming off by keeping the small stopper in the position perpendicular to the mounting shaft. In addition, it is possible to easily check the properties and attachment status by hand, and to quickly and easily attach and detach the disk film to the attachment shaft. In addition, the fixed structure that utilizes the spring elasticity of the small rod to prevent removal, which increases the effectiveness of the work of attaching and detaching the film to the mounting shaft, is simple, and the work of attaching the disk film, which requires groping in a darkroom, etc., is easy. This goal can be achieved with a one-touch mechanism, and it greatly contributes to improving work efficiency without being affected by the skill of the work.

[Brief explanation of the drawing]

Fig. 1 is a front view of the mounting mechanism showing how the disk film is attached to the end of the work shaft in which the present invention is implemented, and Fig. 2 shows the mounting shaft and spring wire of the mechanism shown in Fig. 1. FIG. 3 is a view corresponding to FIG. 1 showing another embodiment, FIG. 4 is a detailed perspective view of a part of FIG. 3,
Fig. 5 is a front view of a conventional film attachment mechanism immediately before the disk film is attached to the end of the working shaft, Fig. 6 is a front view of another conventional film attachment mechanism immediately before the disk film is attached, and Fig. 7 7 is a plan view of a disc-shaped cap with an engagement spring used in the mechanism shown in FIG. 6. FIG. In the figure, 3 and 23 are mounting shafts, 10 and 20 are recesses,
12 and 22 are recessed parts, 16 and 26 are spring-shaped retaining rods, and 17 and 27 are supporting legs.

Claims (1)

[Scope of utility model registration request] A small retaining rod made by bending a spring wire into a U-shape is rotatably attached to the end of the mounting shaft that passes through the center boss of the disk film and attaches the film. The fixation of the rod on the extension line of the mounting shaft and at a position perpendicular to the mounting shaft is achieved by applying the elastic force of the spring possessed by the small retaining rod itself to the two orthogonal notch-shaped recesses formed on the mounting shaft. Using,
A disk film mounting mechanism for a photographic developing machine characterized by press-fit engagement.