JPH0241619Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a roll film magazine case that is made of light-shielding plastic and can be assembled with one touch.

Conventional technology A conventional roll film magazine case is made by dry-baking printing on a tin plate or iron plate, cutting it into a predetermined size, pressing it out, and then going through several steps to apply a light-proofing device and make the case. Form it, insert a spool wrapped with roll film into it,
Next, painted caps are fitted to both ends of the case to complete the case. Plastic magazine cases are also known from Japanese Utility Model Publication No. 42-22348 and Japanese Patent Application Laid-open No. 111822/1983.

Problems that the invention aims to solve Conventional magazine cases made of metal plates are inspected approximately 12 times during the manufacturing process to ensure light shielding, rust prevention, and to measure film passage resistance. A number of controls are required, including checking for external flaws caused by paint and plating, and for paint and plating to come off. A plastic magazine case has been proposed as a way to improve the drawbacks of metal magazine cases, but the manufacturing mold is expensive and the molded product has a light-blocking structure, so there are problems with the molding technology, especially at the entrance and exit. This method cannot be applied to mass-produced products due to certain drawbacks.

This invention is an attempt to propose a roll film magazine case made of plastic that solves the problems in molding technology using molds.

Means to solve the problem A split magazine case with an upper half and a lower half connected in a hinged manner at one side edge is integrally molded with light-shielding plastic, and the upper half and lower half are and the other side edge to be joined is provided at the film entrance/exit,
In a roll film magazine case in which a light-shielding raised fabric is installed on the inner wall surface of the entrance/exit, the cover section of the upper half constituting the entrance/exit of the film is hingedly connected to the upper half, and the upper half and the lower half The inner surfaces of the upper and lower cover parts that are connected to each other are lined up on the same plane so that they can be molded all at once, and the surface of the lower half that corresponds laterally to the cover part is opened in a U-shape, and the bottom plate part is attached to the edge of this opening. After molding into a connected and closed shape and pasting a light-shielding raised fabric on the inner inner surface of the cover and the bottom plate, the cover of the upper half is attached to the bottom plate of the lower half formed horizontally at an angle of approximately 90°. The roll film magazine case is characterized in that it is bent and joined together, and locking portions at both ends of the cover portion are engaged with both end edges of a bottom plate portion, and an entrance is provided.

Function Since this invention is as described above, molding can be easily performed and mass production is possible.
In other words, the upper half of the cover, which serves as the entrance and exit for the film, can face its inner surface on the same plane as the upper and lower halves during molding, and each part can be bent and light-shielding hinge parts. It can be molded continuously at once. The entrance and exit in the lower half is formed by forming a horizontal bottom plate, and unlike other connecting parts, precision is not required. After molding and molding,
The molded product can be moved when removed from the mold. Then, after attaching the light-shielding fabric to that area, if it is engaged and locked with the cover part of the upper half, an entrance/exit can be established with a single touch.

Embodiment Hereinafter, this invention will be explained with reference to an embodiment shown in the drawings. In A, the upper half 1a and the lower half 1b are connected by one side edge 2, and the upper half 1a and the cover 3 of the film entrance/exit are connected. At the other side edge 8, the inner surfaces of the upper half 1a, the lower half 1b, and the cover 3 which are connected to each other are arranged on the same plane, and are molded all at once with light-shielding plastic. The surface of the lower half 1b that corresponds to the cover 3 in the horizontal direction is opened in a U-shape, and the bottom plate 4 is attached to the edge of this opening.
It is configured such that it can be formed into a connected and closed shape during the molding. During the molding, locking parts 3a, 3a are formed at both ends of the cover part 3, and pull-out grooves 5a, 5a forming an entrance/exit 5 for the film are formed in the joint surface between the cover part 3 and the bottom plate part 4, respectively. Light-shielding raised fabrics 6 and 7 are adhered to the inner surface thereof.

Effects of the invention As shown in the figure, this invention
is formed into an upper half 1a, a lower half 1b, and a cover 3 continuous to the side edge of the upper half 1a using light-shielding plastic, and the upper half 1a
Since the lower half part 1b, the upper half part 1a, and the cover part 3 are respectively formed in a hinged manner,
With the cover part 3 in a bent state, the molds can be operated in the same direction to mold each part at the same time, thereby solving the problems of conventional molding techniques at once. Further, the separated other side edges of the upper half part 1a and the lower half part 1b are formed so as to be engaged and locked with each other, and a film outlet is provided between the meshing and locking edges. After storing the spool wound with the roll film in the magazine case A, the upper half 1a is aligned with the lower half 1b, and at the same time,
When the locking edges 3 and 4 are strongly pressed and engaged, a solid one-piece magazine case A is formed, leaving an exit for the film.The case body is made of light-shielding plastic, and the top The area between the continuous cover part of the half part and the bottom plate part of the lower half part is covered with light-shielding raised fabric, so the exit part, which is most likely to be exposed to light, is highly light-shielded, making it completely different from conventional roll rolls. It has no inferiority to the light shielding of a film magazine case, and is especially different from a conventional metal magazine case.
Since it is molded with light-blocking plastic, the manufacturing process is simple and mass production is easy, making it suitable for mass production.When molding, it is expanded as shown in Figure 1.
The opening edges of the upper and lower halves are joined together to eliminate light blocking to the inside, and by utilizing the elastic material, the locking edge at the separation edge is attached to one side of the lower half. The magazine case can be easily assembled by strongly pressing the protruding cover portion of the upper half and engaging and locking the cover portion. Therefore, the work of storing the roll film wound on the spool is
Unlike the conventional storing and sealing work for making a magazine case, storing and sealing can be done by simply aligning the upper half and the lower half and engaging the mating locking edges.

As mentioned above, the technical problems in manufacturing molds for magazine cases have been solved, and not only has production become significantly easier, but the efficiency of the assembly work of storing and sealing the film has also been dramatically improved. be. Furthermore, it has many practical effects that are completely unimaginable with conventional magazine cases, such as being able to be incinerated after use.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an end view of the case body when it is unfolded, with a portion thereof being shown in cross-section. FIG. 2 is a perspective view of the expanded state, and FIG. 3 is an end view of the combined state. A...Magazine case, 1a...upper half, 1b...lower half, 2...one side edge, 3...cover for entrance/exit connected to the other side edge of the upper half 1a, 4...other side of the lower half 1b Bottom plate part for entrance/exit of edge, 5... Film entrance/exit, 6,
7...Shading brushed fabric, 8...Other side edge.

Claims (1)

[Scope of utility model registration request] A split magazine case with an upper half and a lower half connected in a hinged manner along one side edge is integrally molded with light-shielding plastic, and the upper half and lower half are fitted and joined together. The other side edge is provided at the film entrance/exit,
In a roll film magazine case in which a light-shielding raised fabric is installed on the inner wall surface of the entrance/exit, the cover section of the upper half constituting the entrance/exit of the film is hingedly connected to the upper half, and the upper half and the lower half The inner surfaces of the upper and lower cover parts that are connected to each other are lined up on the same plane so that they can be molded all at once, and the surface of the lower half that corresponds laterally to the cover part is opened in a U-shape, and the bottom plate part is attached to the edge of this opening. After molding into a connected and closed shape and pasting a light-shielding raised fabric on the inner inner surface of the cover part and the bottom plate part, the cover part of the upper half part is attached to the bottom plate part of the lower half part formed laterally. A roll film magazine case characterized in that the case is bent at 90 degrees and joined together, and the locking portions at both ends of the cover portion are engaged with both edges of the bottom plate to provide an entrance/exit.