JP2544762Y2 - pencil case - Google Patents

Description

[Detailed description of the invention] a. Purpose of the invention (industrial application field) The invention relates to a pen case made of a synthetic resin hard injection molded product.

(Prior Art) Most of the conventional pen cases of this type have a lid fitted to the outside of the body or a lid and a body hinged at a thin film-like portion in most cases.

(Problem to be solved by the invention) This invention aims to reduce the manufacturing cost by making the lid and the body of the pen case exactly the same, to facilitate the inventory management of the manufacturer and the dealer, and to make the lid and the body It is intended to be able to be fitted in a hinge type.

B. Configuration of the Invention (Means for Solving the Problems) In order to achieve the above-mentioned problems, in the present invention, the lid and the body are made of a hard injection molded product made of synthetic resin. The lid and the body have exactly the same shape, and the fitting engagement projection and the engagement recess are close to one end of a straight side of the lid and the body, and an axis parallel to this one side is provided. A bearing having a tenon having a mortise is formed integrally with the pair of the lid and the body of the body facing each other at a predetermined interval, and is perpendicular to this side passing through the intermediate point of this side. With reference to a center line, at a position symmetrical with the position between the pair of bearing portions, the length between the bearing portions coincides with the length between the bearing portions, and a shaft portion is formed integrally with the main body on the same line as the shaft. Hemispherical tenon corresponding to the tenon Also it is characterized that you have a person who has been formed to project.

In order to achieve the above object, the pen case of the present invention is provided with two sleeves each having a parallel axis on one side of the straight line between the lid and the body, and a center line of the length of this side. In some cases, the sleeve position and the non-sleeve position are provided symmetrically with respect to the above, and the lid and the body sleeve are connected by a common pin axis.

(Operation of the Invention) When molding the invention, the lid and the body are molded using the same molding die, and a pair of molded products is used as a pen case.

In the invention according to claim 1, the shaft of the other part is positioned between a pair of bearings having a tenon of one of the two parts, and a tenon at both ends of the shaft is provided. The mortise and the mortise of the two parts are pushed into the opposing mortise using the elasticity of the molded article itself, and the two mortises are placed on the same line. To butterfly.

In this way, a ball-point pen, a pencil or the like is appropriately used in a pen case constituted by two connected parts. Opening and closing is performed by relatively rotating around the axis of the tenon and tenon.

In the second aspect, when assembling, one of the sleeves of one part is positioned mutually between the sleeves of the other part, and the sleeves of the two parts are aligned. A common pin shaft is inserted into the sleeve to form a pen case.

 Now, a representative embodiment of the present invention will be described.

Embodiment 1 An embodiment of the invention as shown in FIGS. 1 to 5, which is shown in FIGS. 1 to 5, is a hard injection molded product of a synthetic resin such as polystyrene, polypropylene or ABS resin. The body 11 and the body 11 are formed in exactly the same shape, and in this embodiment, they are in the form of a flat rectangular shallow box, and the pair of long straight sides 12 of the lid 10 and the body 11 have It protrudes outward from this, and a pair of bearings
13 is located near the other end, the shaft portion 20 is located on the same axis,
10, formed integrally with the main body of the body 11, and with a center line O perpendicular to the side 12 passing through the intermediate point P of the length of the side 12 as a reference, a pair of bearings 13 of this center line P However, a shaft portion 20 is provided on the other side, and the position between the pair of bearing portions 13 and the position of the shaft portion 20 are symmetrical.

The opposite end faces of the pair of bearing portions 13 are provided with mortise holes 14 that are recessed in the axial direction. In the illustrated example, the mortise hole 14 is provided with a first notch portion 15 near the entrance of the mortise hole 14 whose inner wall of the bearing portion is equivalent to the diameter of the mortise hole 14 with respect to the main body, On the other side of the mortise hole, a second notch 16 whose outer wall is equivalent to the diameter of the mortise hole 14 is provided, and the first and second notches 15 and 16 are provided in the axial direction. The length is about the radius of the tenon 14.

On the other hand, a hemispherical tenon 21 projecting in the axial direction is provided on the end face of the shaft portion 20, and the projecting dimension is larger than the axial length of the first cutout portion 15, and the first and second cutouts are formed. The notches 15 and 16 are smaller than the sum of the axial dimensions. The fit of the tenon 14 and tenon 21 is a type of engaging projection and engaging recess (see FIG. 4).

On the edge 22 of the side opposite to the side 12 of the lid 10 and the body 11, other fitting engagement projections 23 and engagement recesses 24 are provided symmetrically with respect to the center line O, and also for opening and closing the lid 10 and the body 11. Finger hook
25 or one location.

Operation of Embodiment 1 In order to assemble the lid 10 and the body 11, the lid 10 and the body 11 are connected to each other and turned 180 ° so that the shaft part 20 of the other part is located between the bearing parts 13 of one part. When the tenon 21 of each shaft 20 is inserted into the tenon 14 while elastically deforming each part from the first notch 15 side of the tenon 14, the two parts are joined. The two sets of tenon holes 14 and tenons 21 of the lid 10 and the body 11 are respectively located in a straight line, and the lid 10 and the body 11 are hingedly connected to each other (see the solid line in FIGS. 1 and 4). See dashed line).

When these are completely closed, the engaging projections 23 engage with the engaging dents 24 (see the chain line in FIG. 2), and the lid 10 and the body 11 do not open openly (see FIG. 5). When opening these,
A finger is hooked on a finger hook portion 25 provided on each of the parts, and the engaging projection 23 is separated by a force greater than the engaging force of the engaging recess 24. Open the part around the center of rotation.

Embodiment 2 FIG. 6 shows an embodiment of the invention according to claim 4.

The difference from the first embodiment is a hinge structure of two parts. In this embodiment, two sleeves 30 are provided in parallel with the side 12, and the sleeve 30 and the center line O are used as a reference. The non-sleeve position 31 is formed in a symmetric position. Thus, the two parts of the sleeve 30 are alternately positioned in a straight line and hinged by a separate part, a pin shaft 32. The other structure is the same as that of the first embodiment, and the description is omitted.

C. Effect of the Invention The effect of the invention described in each claim of the invention is configured and operates as described above, and therefore, it is not necessary to separately prepare molds for the lid and the body, and a single Therefore, the manufacturing cost can be reduced as compared with the case where the lid and the body need to be different from each other. Even if one of the parts is damaged, inventory management at the maker and the dealer can be easily performed by simply replenishing one part.

In particular, the invention described in claim 1 of the utility model registration is characterized in that the mortise hole 14 and the tenon 21 are located on a single axis parallel to one side of the cover 10 and the body 11 and the shaft portion 20. The opening and closing of the lid 10 and the body 11 is a caution because they are provided at the respective ends of.

As described above, since the first and second cutouts 15 and 16 are formed, the molding of the tenon
Molding can be performed with a mold that can be divided into two parts in the front and back direction of one part, and mold costs can be reduced and molding costs can be kept low. The lid and the body are hingedly connected.

Embodiment 2 Unique Effect Since the hinge shaft uses a separate pin shaft, this portion is strong and can withstand long-term use.

In addition, at the time of manufacturing, if things different in transparency, opacity, and coloring are sequentially formed, by selecting and combining any two of these, a wide variety of products can be obtained. Obtainable.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show a typical embodiment according to the present invention, FIG. 1 is a plan view of a lid or body of the embodiment 1, and FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. Fig. 3 is 3-3 of Fig. 1.
FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 1, FIG. 5 is a plan view showing a state where the lid and the body are connected, and FIG. It is a top view of a lid and parts used as a body. Main symbols 10 in the figure 10 ... lid, 11 ... body 12 ... one side, O ... center line 13 ... bearing part, 14 ... tenon hole 20 ... shaft part, 21 ... tenon 23 ... engagement protrusion , 24….

Claims (2)

(57) [Scope of request for utility model registration] 1. The lid and the body are made of a synthetic resin hard injection-molded product, and a fitting engagement projection and a engagement recess are formed at these joints, and the shape of the lid and the body is exactly the same. In addition, as the fitting engagement protrusion and the engagement recess, a bearing portion having a tenon having an axis parallel to the one side near one end of a linear side of the lid and the body is formed at a predetermined interval. Are opposed to each other and formed integrally with the body of the lid and the body, and on the basis of a center line perpendicular to this side passing exactly through the midpoint of this side, at a position symmetrical to the position between the pair of bearing parts, According to the length between the bearings,
A pen case, wherein a shaft portion is formed integrally with the main body on the same line, and a hemispherical tenon corresponding to the mortise hole projects from both ends of the shaft portion. . 2. A straight side of the lid and the body is provided with two sleeves having an axis parallel to the one side, and the sleeve position and the non-sleeve are determined with reference to the center line of the length of this side. The pen case according to claim 1, wherein the lid and the body sleeve are connected symmetrically by a common pin axis.