JP3020293U - Plastic storage case - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rigid plastic storage case while ensuring storage capacity. In a storage case 31 that is roughly composed of a frame body 32, a top plate 33, and a drawer 34, the frame body and the top plate are separated from each other by hollow pillar-shaped members 40 and 41 integrally molded with the frame body. Combined, this strut-shaped member is narrow in the direction orthogonal to the direction of advance and retreat of the drawer,
The horizontal cross section has a substantially C-shape or a substantially inverted C-shape that opens to one side, and the frame main body is provided with an opening having an edge that continuously extends from the opening edge of the pillar-shaped member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plastic storage case, and more particularly to a plastic storage case having a hollow strut-shaped member.

[0002]

[Prior art]

 Conventionally, there are various types of plastic storage cases of this type, and the applicant of the present invention has disclosed them, for example, in Design Registration No. 891955. As shown in FIGS. 19 and 20, this prior art generally comprises a storage case 1 including a top plate 2, a frame 3, and a drawer 4. A hollow strut-shaped member 5 is integrally molded with the frame 3, and the strut-shaped member 5 separates the frame 3 and the top plate 2 or the frame 3 from each other so that they are connected in a plurality of stages.

In the storage case having the above structure, the strength of the storage case is ensured by forming the pillar-shaped member 5 that connects the top plate 2 and the frame 3 and the frame 3 and the frame 3 in a hollow shape.

[0004]

[Problems to be solved by the device]

 Here, when the conventional storage case is narrowed in the direction orthogonal to the advancing / retreating direction of the drawer 4 (hereinafter referred to as the width direction), it is common to set the widthwise dimensions of the respective constituent members to be small. is there. Of course, the widthwise dimension of the pillar-shaped member 5 is also reduced.

However, reducing the dimension of the strut-shaped member 5 in the width direction causes a die (not shown) for molding the strut-shaped member 5 to be hollow, so that the strength of the die is increased. It was predicted that the cooling efficiency would decline at the same time as the cooling rate might weaken. In order to eliminate such a defect, it is sufficient to increase the widthwise dimension of the pillar-shaped member 5, but in this case, the storage capacity of the drawer housed between the pillar-shaped members 5 is reduced. .

The present invention has been made in view of the above points, and an object thereof is to provide a plastic storage case that secures a storage capacity and is rigid.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a plastic storage case according to the present invention is configured such that a lower member and an upper member molded of plastic are separated from each other by a hollow pillar-shaped member integrally molded with the lower member, In a plastic storage case in which a box-shaped drawer with an open top is housed in the space between the member and the lower member so that it can move back and forth from one side of the space, the pillar-shaped member is orthogonal to the direction in which the drawer moves. The width is narrow in the direction, and the horizontal cross section has a substantially C-shape or a substantially inverted C-shape that opens inward in the direction orthogonal to each other. Equipped with an opening.

[0008]

[Action]

 In the present invention, since the strut-like member is narrow in the direction orthogonal to the drawer retreat direction, the widthwise dimension of the drawer can be relatively increased. In addition, when the pillar-shaped member is molded, even if the wall thickness of the mold for molding the hollow is thin, by combining it with the mold for molding the opening of the pillar-shaped member and the opening of the lower member, the result It is possible to secure the strength of the mold for molding the hollow of the pillar-shaped member.

[0009]

【Example】

 Hereinafter, the storage case of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the storage case 31, and FIG. 2 is an exploded perspective view of a part thereof. The frame main body 32 has front and upper openings, the top plate 33 for closing the upper surface of the frame main body 32, and the frame. The main body 32 has a drawer 34 which is housed in the frame main body 32 so as to be able to move forward and backward from the front opening.

As shown in FIGS. 3 to 7, the frame body 32 integrally molded of plastic has three side surfaces and a rear surface, which are upwards from the bottom surface 36 except the front side (left side in FIG. 2). 37, 38 and a rear wall 39. Connection ribs 37a, 38a, 39a are formed on the upper portions of these walls 37, 38, 39, respectively, which are recessed inward one step further than the outsides of the walls, project upward, and extend along the upper edges.

Hollow pillar-shaped members 40 and 41 are formed at the front end portions of the side walls 37 and 38. The strut-shaped members 40, 41 have a narrow width in a direction (hereinafter, referred to as a width direction) orthogonal to the advancing / retreating direction of the drawer 34, and as shown in FIG. 14, from the bottom surface 36 to the upper fixed position, The openings 40A and 41A are formed so that the horizontal section has a substantially C-shape or an inverted C-shape. The front portion (left side in FIG. 3) of the pillar-shaped members 40 and 41 is in contact with the front portion of the drawer 34, which will be described later, and the rear side (right side in FIG. 3) walls 40C and 41C. The stopper ribs of the drawer 34, which will be described later, come into contact with each other. Fitting portions 42 and 43 extending upward in a substantially cylindrical shape are formed on the upper portions of the pillar-shaped members 40 and 41.

Openings 44 and 45 are formed in the bottom surface 36 where the pillar-shaped members 40 and 41 are formed, respectively. The openings 44 and 45 have opening edges that extend continuously from the opening edges of the openings 40A and 41A of the support columns 40 and 41, respectively.

An opening 46 is formed at the center of the bottom surface 36, and two limiting ribs 47, which limit the lateral movement of the drawer, which will be described later, are provided near the side walls 37 and 38 so as to project upwards and backwards from the bottom surface. It extends for a predetermined length in the direction.

The connecting ribs 37a, 38a, 39a of the side walls 37, 38 and the rear wall 39 are provided with fitting holes 49 penetrating in a horizontal direction at appropriate positions, respectively.

Further, the entire bottom surface 36 of the frame body 32 is formed such that the front surface of the bottom surface is bent downward, and the respective walls 37, 38, 39 are below the bottom surface 36. The flange 48 is extended to the side. Further, the flange 48, which is an extension of the walls 37, 38, and 39, projects inward so as to fit into the fitting hole 49 when the frame main body 32 is stacked in two or more stages. A fitting claw 50 is formed.

On the back surface of the bottom surface 36, a plurality of positioning ribs 52 projecting downward from the bottom surface are formed on a line offset from the flange 48 by a predetermined gap. A fitting receiving portion 51 into which the fitting portions 42 and 43 of the other frame body 32 are fitted is formed on the back surface side of the pillar-shaped members 40 and 41. Therefore, the connecting ribs 37a, 38a, 39a of another frame main body 32, which is connected to the lower side of the frame main body 32, are fitted between the flange 48 and the positioning rib 52, and the fitting receiving portion 5 The fitting portions 42 and 43 are fitted into the fitting 1, and the fitting hole 49 and the fitting claw 50 are engaged with each other to join the upper and lower frame bodies 32 to each other.

Then, at approximately four corners of the bottom surface, there are drilled holes 54 for the casters for vertically attaching the casters 78, which are free-flowing parts, which are separate parts. In the vicinity of the caster hole 54, a rubber foot hole 56 for mounting the rubber foot 79 as a separate component is formed.

Next, as shown in FIGS. 8 to 10, the top plate 33 that closes the upper opening of the frame main body 32 is made of a substantially rectangular plate material, and its entire outer peripheral edge faces downward. A peripheral flange 57 is formed so as to be bent. Further, fitting claws 58 projecting inward are formed on the back sides of the peripheral flanges 57 located on both sides and the rear part. The fitting claw 58 is fitted in the fitting hole 49 described above to firmly couple the frame body 32 and the top plate 33. A fitting receiving portion 59 is formed near the fitting claw 58 located on the front side. The fitting receiving portion 59 is dimensioned so that the fitting portions 42 and 43 of the pillar-shaped members 40 and 41 described above are fitted therein. Further, a positioning rib 60 is erected inside the peripheral rib, and the connecting ribs 37a, 38a, 39a of the frame body 32 are fitted between the peripheral flange 57 and the positioning rib 60, and the fitting claw is fitted. 58 engages with the fitting hole 49, and the top plate 33 and the frame body 32 are joined together. A reinforcing rib 61 extending in the lengthwise direction is provided upright on the back surface of the top plate 33.

Next, as shown in FIGS. 11 to 13, the drawer 34 that is retractably housed in the space formed by the frame body 32 and the top plate 33 has a box-like shape with an opening on the upper surface. Is formed in. The drawer 34 is integrally molded of plastic except for the handle 62 at the front. The drawer 34 is roughly composed of a bottom portion 63, a front portion 64, left and right side portions 65 and 66, and a rear portion 67. The front portion 64 has a substantially C-shape in a top view, and the connecting portion between the front portion 64 and the side portions 65 and 66 is in contact with the front walls 40B and 41B of the pillar-shaped members 40 and 41. A contact surface 62A is formed. A handle portion 68 having a shape bent downward is formed on the upper edge of the front portion 64. Further, the handle 62 which is a separate member is attached to the center of the handle 68.

The rear portion 67 of the drawer is formed at the same height as the front portion 64. The left and right side portions 65, 66 extending between the front portion 64 and the rear portion 65 and extending upward from the bottom portion 63 are characterized by their side designs, as is apparent from the drawings. That is, a first horizontal portion 69 extending from the front portion 64 at the same height for a predetermined length, an inclined portion 70 extending obliquely downward from the first horizontal portion 69 for a predetermined length, and a horizontal extension extending from the inclined portion 70 for a predetermined length. The existing second horizontal portion 71, the second inclined portion 72 extending obliquely upward from the second horizontal portion 71 to the same height by a predetermined length, and the third horizontal portion 73 extending from the second inclined portion 72 to the rear portion. It is composed of tiger.

The left and right portions 65 and 66 and the rear portion 67 are formed at all edges of the opening with a folded-back portion 74 which is bent outward in the horizontal direction and is bent downward. There is. Stopper ribs 75 are formed at the rear end portions of the folded-back portions 74 of the side portions 65 and 66 and project outward from the side portions 65 and 66 by a predetermined length and extend downward by a predetermined length. The upper end of the stopper rib 75 is set at the same height as the folded-back portion 74 in the third horizontal portion 73, that is, the maximum height dimension of the drawer 34.

A guide rib 76 is formed perpendicular to the stopper rib 75 and between the folded-back portion 74 and the stopper rib 75. As shown in FIG. 14, the guide rib 76 extends from the folded-back portion 74 to the stopper rib 75 in the advancing / retreating direction of the drawer 34, and the protruding amount thereof increases as it approaches the stopper rib 75. The projecting amount of the guide rib 76 is set at the stopper rib 75 position so as not to exceed the inner dimension (indicated by W in FIG. 14) of the rear walls 40C, 41C of the columnar members 40, 41. Has been done.

A rail rib 77 is formed on the bottom rear side of the drawer and projects downward from the bottom rear surface and extends in the longitudinal direction.

A procedure for assembling each member formed as described above will be described below. Here, a four-stage storage case is assembled. First, the frame bodies 32 are joined together. Another frame main body 32 is connected to the upper side of the frame main body 32. In this case, between the flange 48 and the positioning rib 52, the connecting rib 37a of the other frame main body 32 to be connected to the lower side. , 38a, 39a are fitted, fitting parts 42, 43 are fitted in the fitting receiving part 51, and fitting holes 49 and fitting claws 50 are engaged, so that the upper and lower frame bodies 32 are joined together. Are combined.

Next, the top plate 33 is coupled to the upper part of the frame body 32 located on the uppermost side. In this case as well, the connecting ribs 37a, 38a, 39a of the frame body 32 are fitted between the peripheral flange 57 and the positioning rib 60, and the fitting claw 58 is engaged with the fitting hole 49. 33 and the frame body 32 are joined together.

Finally, the storage case 1 is completed by fitting the shaft of the caster 78 into the caster 54 hole of the lowermost frame body 32.

Next, the features of the storage case 1 of the present invention will be described. For example, when the storage case 1 is used in a dining kitchen, instant coffee, soup, miso soup, and canned food can be stored in the drawer 34. When these items are stored or taken out, the design on the side has a shape as shown in the figure, so these tasks can be performed. That is, both side portions 65 and 66 of the drawer 34 have a first horizontal portion 69 extending from the front portion 64 at the same height for a predetermined length, and an inclined portion 70 extending obliquely downward from the first horizontal portion 69 for a predetermined length, A second horizontal portion 71 extending horizontally for a predetermined length from the inclined portion 70, a second inclined portion 72 extending obliquely upward for a predetermined length from the second horizontal portion 71 to the same height, and a second inclined portion 72 for the rear portion. Since the third horizontal portion 73 is formed so as to extend, it is possible to take out the short horizontal article 71 from the second horizontal section 71, for example. Further, since the second inclined portion 72 extends to the rear portion 67, the article does not get over the rear portion 67.

Further, since the stopper rib 75 is formed, when the drawer 34 is fully drawn out, the stopper rib 75 causes the wall 40C of the pillar-shaped members 40, 41 to be shown in FIGS. 14 and 15. , 41C, and the drawer 34 cannot be pulled out further, so that the drawer 34 cannot fall out.

Further, the drawer 34, which is in the locked state by the wall surfaces 40 C and 41 C and the stopper rib 75, is positioned and locked by the guide rib 76 so as to be positioned at the center. Can be prevented from falling off.

Here, when the pillar-shaped members 40, 41 are molded, they are molded by the molds 81, 82, 83 schematically shown in FIGS. 17 and 18. These molds 81, 82 and 83 are such that the mold 81 is fixed and the molds 82 and 83 are movable (or vice versa). The mold 83 for molding the strut members 40, 41 includes a mold 83A for molding the hollow of the strut members 40, 41, openings 40A, 41A of the strut members 40, 41 and an opening 44 of the bottom portion 36. Since the mold 83B for molding the holes 45, 45 is integrally formed, even if the wall thickness of the mold 83A for molding the hollow is thin, the mold 83B for molding the openings 40A, 41A and the openings 44, 45. Therefore, the strength of the die 83A can be supplemented.

Further, since the cooling efficiency of the die 83A is improved, the frame main body 32 can be molded quickly and the quality of the molded product can be improved.

Therefore, the plastic storage case 31 of the present invention can eliminate the restriction of the mold and can provide a molded product of good quality.

In the present embodiment, the lower member is the frame main body 32, the upper member is the top plate 33 and the frame main body 32, the pillar-shaped members are the pillar-shaped members 40 and 41, and the drawer is the drawer 34. The openings of the strip-shaped member correspond to the openings 40A and 41A, and the openings of the lower member correspond to the openings 44 and 45, respectively.

[0034]

[Effect of device]

 As described in detail above, according to the present invention, the following effects can be obtained. Since the strut-like member is narrow in the direction orthogonal to the drawer retreat direction, the widthwise dimension of the drawer can be relatively increased. In addition, when the pillar-shaped member is molded, even if the wall thickness of the mold for molding the hollow is thin, by integrating the opening of the pillar-shaped member and the opening of the lower part with the mold, As a result, it is possible to secure the strength of the mold for molding the hollow pillar-shaped member. Therefore, it is possible to provide a highly reliable plastic storage case while ensuring storage capacity.

[Brief description of drawings]

FIG. 1 is a perspective view showing a storage case of the present invention.

FIG. 2 is a partial perspective view of FIG.

FIG. 3 is a plan view of a frame body.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

5 is a sectional view taken along line BB of FIG.

FIG. 6 is a sectional view taken along the line CC of FIG. 3;

FIG. 7 is a bottom view of the frame body.

FIG. 8 is a bottom view of the top plate.

FIG. 9 is a sectional view taken along line DD of FIG. 8;

10 is a cross-sectional view taken along line EE of FIG.

FIG. 11 is a bottom view of the drawer.

12 is a sectional view taken along line FF of FIG.

13 is a sectional view taken along line GG of FIG.

FIG. 14 is a partially enlarged plan sectional view for explaining a use state.

FIG. 15 is a partially enlarged perspective view for explaining a use state.

FIG. 16 is a perspective view for explaining a use state.

FIG. 17 is a partial cross-sectional view schematically showing a mold for molding the frame main body.

FIG. 18 is a partial perspective view showing the outline of a mold for molding the frame main body.

FIG. 19 is a side view of a conventional storage case.

20 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 31 Storage Case 32 Frame Main Body 33 Top Plate 34 Drawer 40, 41 Supporting Member 40A, 41A Opening 44, 45 Opening

Claims (1)

[Scope of utility model registration request] 1. A lower member and an upper member molded of plastic are separated and joined by a hollow pillar-shaped member integrally molded with the lower member, and an upper surface is opened in a space between the upper member and the lower member. In a plastic storage case that accommodates a box-shaped drawer that can be moved back and forth from one side of the space, the column-shaped member has a narrow width in the direction orthogonal to the direction in which the drawer is moved forward and backward, and the horizontal section opens to one side. A plastic storage case having a substantially C-shape or a substantially inverted C-shape, wherein the lower member is provided with an opening having an edge extending continuously from an opening edge of the columnar member.