JPH0753126B2 - Carry case manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a carry case capable of closely holding an object to be stored by an internal cushioning material, particularly electric equipment such as a video camera, precision equipment, and other impacts. The present invention relates to a method of manufacturing a carry case suitable for an article that needs protection.

(Prior Art) Conventionally, when a video camera or other article sensitive to impact is stored and carried, a portable and dedicated carry case is used to protect it. The structure is composed of a container body and a lid body whose one side edges are axially supported by each other and which can be opened and closed.
In order to form a recess for accommodating an object to be stored inside the container body and the lid, a backup cushioning material as a base and a cushioning skin material for covering the surface are sequentially doubled. It is fitted and is made of foamable synthetic resin.

(Problems to be solved by the invention) However, since each member having the above-mentioned configuration is formed separately, dimensional variation is likely to occur, and the backup cushioning material has a high accuracy in connection with the container body and the lid. It can not be held, and it is unavoidable that slight molding distortion, curvature of curved surface and slight dimensional variation occur when molding the container body and the lid itself, and when such parts are fitted together A slight rattling gap may occur, or a slight variation on the container body side and a variation on the lid side may cause a deviation between the two, loosening the storage space that matches the stored object and causing play. For example, it is difficult to easily and surely provide a carry case for tightly holding an object to be stored.

The present invention has developed a manufacturing method for eliminating the above-mentioned conventional drawbacks and providing a carry case capable of securely holding an object to be stored in close contact.

(Means for Solving the Problem) In order to achieve the above object, the present invention has a female die for holding a container main body or a lid, and a land surface that substantially coincides with a surface portion of an object to be stored in a carry case. Also, at least a male mold capable of forming a cavity forming an inner skin extending from the inside of the container body or the lid to the peripheral end portion of the container body or the lid is prepared, and a component part of the container body or the lid and a backup. After combining the cushioning materials for use in the female mold and aligning the male mold, the cushioning material is injected into the cavity, and the interior skin is reached from the surface of the backup cushioning material to the end of the container body or lid. It is characterized by a method of manufacturing a carry case that is formed by closely adhering.

(Example) Next, the Example of this invention is described based on drawing.

FIG. 1 is an example view of a carry case manufactured according to the present invention, and FIG. 2 is a view showing a main part thereof, which is a container body.
The lid 1a and the lid 1b are joined by a hinge 4, both of which have a built-in backup cushioning material 2a, 2b on the inside thereof and a storage surface formed by coating the interior skins 3a, 3b on the inside thereof. Fitting spaces 11a and 11b corresponding to the stored items are formed.

The container body 1a and the lid 1b are both an example of an exterior body in which a thin plate state of an ABS resin or a metal material is formed into a container shape.
5a, 5b as a main body, the outer wall 5a, 5b has a peripheral wall edge, each having a sandwiching portion having a substantially U-shaped cross-section, and has projecting edges 7a, 7b which are fitted to each other in the closed state. Reinforcement frame 6a, 6b
Is provided as an edge frame, and the handle 8, the lock portion 9 and the like are attached and formed over one or both of the reinforcing frames 6a and 6b.

The backup cushioning materials 2a, 2b are one material or a combination material of two or more having an appropriate size that can be fitted inside the outer casings 5a, 5b, respectively, and between the backup cushioning materials 2a, 2b in the closed state. It is formed of a cushioning material such as styrofoam, in which uneven surfaces 10a and 10b are formed so that a space slightly larger than the size of the object to be stored is formed.

The inner skins 3a, 3b cover the inner surfaces of the backup cushioning materials 2a, 2b arranged inside the outer casings 5a, 5b, and the reinforcing frame 6a,
Container body 1a to lid 1b formed to reach the end of 6b
The inner space of the housing of the
It is formed of a material having a buffering property and an appropriate tensile strength, such as foamed polyurethane that forms a and 11b.

FIG. 3 is a sectional view showing a state in which the container body 1a according to the present invention is formed. 12, 13 are male and female molds for molding, the female mold 12 is formed with a recess 12a into which the container body 1a is fitted,
The male mold 13 has a land surface 13a that substantially matches the shape of the surface portion of the stored object, and extends from the inside of the backup cushioning material 2a set inside the exterior body 5a to the end of the reinforcing frame 6a and the interior skin. It is formed so as to have a cavity 14 for forming 3a. In the figure, the cavity 14 is formed so as to reach the outer side surface of the reinforcing frame 6a, so that when the container body 1a and the lid body 1b are closed together, this exerts cushioning performance and at the same time makes the closed portion closely contact. However, it may be formed so as to reach the upper end surface of the reinforcing frame 6a, or may be formed so as to reach the inside of the projecting edge 7a of the reinforcing frame 6a.

Then, first, the reinforcing frame 6a is integrated, and the handle 8 and the lock portion 9 are integrated.
Etc. (Although this formation may be the final step)
A backup cushioning material 2a is arranged in 5a with an adhesive interposed as needed, and this is set in the recess 12a of the female die 12. Next, when the female mold 12 is put together, a cavity 14 is formed from the entire inner surface (upper side in the figure) of the backup cushioning material 2a to the end portion of the reinforcing frame 6a. Polyurethane is cavity
14 is filled and closely adhered to the surface of the backup cushioning material 2a, and also tightly adhered to the periphery of the reinforcing frame 6a.
The inner surface of the container body 1a, that is, the surface of the male mold 13 is accurately covered regardless of the rattling of the backup cushioning material 2a and the outer casing 5a due to variations in molding dimensions or the presence of gaps, molding distortion, and the like. It is possible to mold on the uneven surface corresponding to the stored items, and since this surface is integrated with the exterior body 5a side, there will be no deviation.

In this way, the container body 1a is formed, while the lid body 1b is also formed by the same method using a mold having the same structure as described above, and finally, the both 1a and 1ba are joined by the hinge 4 according to the present invention. Get a carry case. In addition, it is preferable that the inner skin is not formed on the hinge mounting portion or the outer side of the reinforcing frame on the hinge mounting side because the hinge is securely fixed.

Next, FIGS. 4 and 5 show another example. The same components as those described above are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 4, the female mold 15 is formed as a recess 15a in which only the backup cushioning material 2a set in the exterior body 5a and the reinforcing frame 6a are arranged. When the female mold 15 is fitted with the male mold 13 having the same structure as described above, the same cavity 14 is formed, and the injection-formed inner skin 3a is formed on the surface of the backup cushioning material 2a and the edge of the reinforcing frame 6a. Adhere closely. As shown in FIG. 5, the container obtained according to the present invention is obtained by fitting the reinforcing frame 6a to the outer peripheral edge of the outer casing 5a while fitting the formed product thus obtained into the outer casing 5a. The main body 1a can be obtained. This fitting may be performed via an adhesive material. The lid 1b is similarly formed.

The shapes of the outer casings 5a and 5b and the reinforcing frames 6a and 6b are arbitrary.
Even if the uneven portion of the backup cushioning material is not necessarily formed, it is possible to form the uneven surface of the storage portion only with the interior material. However, since the interior skin is generally more expensive than the backup cushioning material, in order to reduce the manufacturing cost, it is preferable to form uneven portions on the backup cushioning material so as to keep the thickness of the interior packaging material thin.

(Effect of the Invention) As described above, according to the present invention, the inner skin of the container body and the lid is integrated with the outer body, the reinforcing frame, and the cushioning material for backup at the same time by molding, and integrated. The uneven surface can be accurately formed in correspondence with the uneven shape of the mold having the same shape as the surface shape of the stored object, and it is not affected by the positional deviation due to the combination of each part or the molding variation of each part. Therefore, it is possible to form a carry case capable of securely holding and protecting the stored object. As for the manufacturing method, the cushioning material for backup is set in the exterior body equipped with the reinforcing frame and then fitted in the mold, or the reinforcing frame and the cushioning material for backup are arranged in the mold, and the interior skin material is used. Inject
In the former case, the container body and the lid body may be thereafter joined by a hinge, and in the latter case, the molded body may be combined with the exterior body to be integrated and then the container body and the lid body may be joined together. Work is simple and efficient.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a carrying case according to the present invention, FIG. 2 is an enlarged sectional view of a main part taken along line II-II of FIG. 1, and FIG.
FIG. 4 is a cross-sectional view of the mold showing the molding state, FIG. 4 is a cross-sectional view of the mold showing the molding state of another embodiment of the present invention, and FIG. 5 is a set of exterior bodies manufactured by the manufacturing method of FIG. Sectional drawing which shows a matching process. 1a …… Container body, 1b …… Lid body, 2a, 2b …… Backup cushioning material, 3a, 3b …… Inner skin, 4 …… Hinges, 5a, 5b ……
Exterior body, 6a, 6b ... Reinforcing frame, 10a, 10b ... Rough surface, 11a, 11
b …… Mating space, 12,15 …… Female type, 12a, 15a …… Concave, 12
...... Male, 13a …… Land surface, 14 …… Cavity.

Claims (1)

[Claims] 1. A container body or lid having a female die for holding the container body or lid, and a land surface which substantially coincides with a surface portion of an object to be stored in a carry case and which is provided from the inside of the container body or lid. At least a male mold capable of forming a cavity that forms an inner skin extending to the peripheral end of the body is set, and is set in a female mold by combining the component parts of the container body or the lid and the backup cushioning material, After fitting the male molds, a cushioning material is injected into the cavity to form the inner skin from the surface of the backup cushioning material to the end portion of the container body or the lid body by tight adhesion to form a carry case. Production method.