JPH10248466A - Structure for opening part of container or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To integrate a pivotally supporting shaft for hanging the lid body of a container such as a cold insulation box for fishing or the like with an opening part. SOLUTION: An opening edge 33 is projectingly provided from the lower part of the opposing wall 31a of the opening part 27 to the center of the opening part and a die insertion hole 36 for lower surface formation for forming the lower surface 47 of the pivotally supporting shaft 29 is passed through in a vertical direction and formed at the opening edge 33. The upper surface 46 of the pivotally supporting shaft 29 is formed by a die 49 for the upper surface formation of the opening part 27 and the pivotally supporting shaft 29 is formed integrally with the opening part 27 and hung between the other opposing wall 32b close to a side parallelly opposing the opposing side of the opening part 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an opening of a container such as a cold storage box for fishing provided with a pivot shaft of a lid.

2. Description of the Related Art Containers such as insulated boxes for fishing, live bait boxes, etc.
In addition to a lid for opening and closing the upper opening of the housing-like container body, a small opening for feeding fish or taking out live food and a lid for opening and closing the same are provided.

Japanese Utility Model Laid-Open Publication No. 5-7080 discloses an example of such a container, and a pivot shaft is hung between opposing walls near the opposing wall of a small opening of the container. Fixed. An inverted U-shaped receiving portion is provided on the lid applied to the opening corresponding to each pivot.
A cover is placed over the opening such that the pivot shaft fits into the inverted U-shaped groove of the receiving portion. Also, two sliders are provided in the lid so as to close and open under the inverted U-shaped groove, respectively, and when the slider is closed under the inverted U-shaped groove, the pivot shaft is supported. When the slider is opened under the inverted U-shaped groove, the pivot can be separated from the inverted U-shaped groove of the receiving portion. Therefore, if one of the sliders is moved in the opening direction, the lid can be opened from the opened side, and the lid is set with the pivot shaft on the slider side with the lid closed as a fulcrum. It will rotate. Further, if both sliders are moved in the opening direction, the lid can be completely removed from the opening.

[0003]

However, in the above-mentioned prior art, a hole for fixing the pivot shaft is formed in the opposite wall of the opening at the same time as the opening is formed, or the pivot shaft is fixed. A bracket with a hole for installation must be provided on the opposing wall of the opening, but this hole should be clear in a direction that intersects at right angles to the driving directions of the fixed mold and the movable mold when forming the opening. Therefore, when forming the opening, the slide die for hole forming must be slid in a direction perpendicular to the driving direction of the movable die, and thus providing this hole causes a reduction in production efficiency. It has become.

[0004] Further, the slide die for hole forming is such that the tip of a small-diameter pin for hole forming is brought into contact with the outer surface of the fixed die at the time of molding, so that there are also problems with the life of the die, the yield of the molded product, and the like. Has occurred.

Further, since a separate pivot shaft must be incorporated and fixed in the opening after the opening is formed, the number of parts increases accordingly, and not only is manufacturing and management difficult, but also assembly work is difficult. Have also caused problems.

Accordingly, an object of the present invention is to solve such a problem.

[0007]

In order to achieve the above object, the invention of claim 1 is directed to a pivot shaft 4a of a lid 3, 28 for opening and closing an opening 2, 27 of a housing-like container body 1. 4b,
In the structure of the opening such as a container provided with 5a, 5b, 29, 30 and the like, the opposing walls 6a, 6b, 3 of the openings 2, 27 are provided.
1a, 31b toward the center of the opening from the lower part of the opening edge 8,
33, and the pivot shafts 4a, 4
b, 5 a, 5 b, 29, 30 Insertion holes 11, 36 through which lower surface forming dies 24, 29 forming lower surfaces 23, 47 are inserted.
Are formed in the vertical direction, and the pivot shafts 4a, 4b, 5
a, 5b, 29, 30 with openings 22,
7 is formed by the upper surface forming dies 21 and 48, and is formed between the other opposing walls 7a, 7b, 32a and 32b in parallel with the opposing sides of the openings 2 and 27 and near the opposing sides. 2
7 and the pivot shafts 4a, 4b, 5a, 5b, 29, 30
And the structure of the opening of the container etc.
The invention according to claim 2 is characterized in that the pivot shafts 4a, 4b, 5a, 5b
Are formed only at positions close to the other opposing walls 7a, 7b of the openings 2, 27, and the brackets 10 are provided with the pivot shafts 4a, 4b, 5a, 5b integrally projecting upward from the opening edge 8.
The structure of the opening of the container or the like according to the first aspect is formed integrally with the opening edge.
The mold insertion holes (11, 36) for forming the lower surface of the pivot shaft, which are formed in the vertical direction, are closed by the cover (12).
Alternatively, an opening of the container or the like according to any one of claims 2 to 6 is provided.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings.

Embodiment 1 A container shown in FIG. 1 is a cool box or a live bait box, and has a housing-shaped container main body 1 and a lid 3 that opens and closes an opening 2 of the container main body 1. doing.

The lid 3 can be opened and closed with respect to the container body 1 from either the left or right side. As shown in FIGS. 2 and 3, pivots 4a, 4b, 5a,
5 b are provided on the left and right of the opening 2 of the container body 1.

The container body 1 is formed by filling a heat insulating material 1b into the hollow of an outer shell 1a made of an injection-molded product of a synthetic resin, and has opposing walls 6a, 6b And the other opposing walls 7a and 7b opposing each other in a direction perpendicular to the direction of. From the lower part of the opposing walls 6a, 6b, 7a, 7b, an opening edge 8 projects like a shelf toward the center of the opening. Further, the tip of the opening edge 8 is further lowered into a shelf shape toward the bottom of the container, and a projection is formed upward so that the packing 9 fixed to the inner surface of the lid 3 contacts the shelf. ing.

The pivot shafts 4a, 4b, 5a, 5b are bridged between the other opposing walls 7a, 7b in the vicinity of each of the opposing walls 6a, 6b and in parallel with the opposing walls 6a, 6b. It is parallel to the upper edges of the opposing walls 6a, 6b,
It is formed integrally with the opening 2. Pivot shafts 4a, 4b, 5
Although a and 5b may be linearly bridged between the other opposing walls 7a and 7b, in this embodiment, the other opposing walls 7a and 7b
7b and the bracket 1 protruding from the opening edge 8
0, and the pivot 4
a, 4b, 5a, 5b and the bracket 10 are formed integrally with the opening 2. The pivots 4a, 4b, 5a,
A mold insertion hole 11 is formed in the opening edge 8 immediately below 5b due to a molding method of the container body 1 described later, and the mold insertion hole 11 is formed by a cover 12 as shown in FIG.
Is closed by

The lid 3 is a plate that fits into a recess formed by the opposing walls 6a, 6b, 7a, 7b, the opening edge 8 and the shelf in the opening 2 of the container body 1. As in the case of the container body 1, the heat insulating material 3b is filled in the hollow of the outer shell 3a made of a synthetic resin injection molded product.

On the left and right sides of the lid 3, substantially inverted U-shaped receiving portions 12 are provided corresponding to the respective pivot shafts 4a, 4b, 5a, 5b. Pivot 4a, 4
b, 5a and 5b are fitted so as to be detachable. In addition, a concave portion 13 extending in the left-right direction is formed in an upper portion of the lid 3, and two operation pieces 1 are provided in the concave portion 13.
4a and 14b are slidably inserted in the left-right direction.

In the outer shell 3a of the lid 3, each of the pivot shafts 4 is provided.
Sliders 14 are provided corresponding to a, 4b, 5a, and 5b. The slider 14 is provided so as to be in contact with the side wall 13a in the concave portion 13, and is connected to the operation pieces 14a and 14b through a slider 16 inserted into a long hole 15 provided on the side wall 13a and extending left and right. ing. A compression spring 17 is interposed between the left and right sliders 14, and each slider 14 is constantly biased toward each of the pivots 4a, 4b, 5a, 5b.

As a result, the operation pieces 14a and 14b are
In addition, as shown in FIG. 3, when the slider 14 is moved to the left and right ends in the recessed portion 13, the slider 14 closes below the inverted U-shaped groove of the receiving portion 12 and receives the pivot shafts 4a, 4b, 5a, 5b. 12 together with the U-shaped groove. Therefore, the lid 3 cannot be removed from the opening 2. Also, the operation pieces 14a, 14
When b is pulled by the operator's finger toward the center of the recess 13 against the urging force of the compression spring 17, the slider 14
Release under the groove and therefore the pivots 4a, 4b, 5a, 5
b can be detached from the inverted U-shaped groove of the receiving portion 12. Therefore, if one of the operation pieces 14a, 14b is moved in the opening direction, the lid 3 can be opened from the opened side, and the lid 3 is pivotally supported by the other operation pieces 14b, 14a. Axis 4
Opening is performed with a, 4b, 5a, and 5b as fulcrums. Further, by moving both operation pieces 14a and 14b in the opening direction, the lid 3 can be completely removed from the opening 2. Next, a method of forming the opening will be described with reference to FIGS.

As shown in the right half of FIG.
The molds 8 and 19 are clamped to form the cavity 20 of the outer shell 1a of the container body 1. In this case, the upper mold 18 is a movable mold, the lower mold 19 is a fixed mold, and the upper mold 18 comes into contact with and separates from the lower mold 19. The mold 19 may be a movable mold.

As shown in the right half of FIG. 5 and FIG.
The upper die 18 has an upper surface 2 of the pivot shafts 4a, 4b, 5a, 5b.
2 is provided. The upper surface forming mold portion 21 is formed in a direction perpendicular to the direction A in which the upper and lower dies 18 and 19 approach and separate. The lower mold 19 is provided with a lower surface forming mold portion 24 for forming the lower surface 23 of the pivot shafts 4a, 4b, 5a, 5b. The lower surface forming mold portion 24 is provided with the cavity 2 for forming the opening edge 8.
0a so as to penetrate the upper and lower dies 18, 19 in the contact direction A of the upper and lower dies 18, 19 so as to fit into the above-mentioned grooves to form the cavity 20b for the pivot shaft together with the upper surface forming mold portion 21. Has become. A cavity 20c for forming the bracket 10 is also provided between the side end of the lower surface forming mold portion 24 and the upper mold 18.

After the upper and lower dies 18, 19 are assembled, the molten resin is injected into the cavity 20, and the opening 2 of the container body 1 is formed integrally with the pivots 4a, 4b, 5a, 5b. That is, the opposing walls 6a, 6b,
Upper and lower dies 18, 19 forming upper and lower surfaces of the opening 2 are formed by opening edges 8 projecting from the lower portions of the openings 7 toward the center of the opening.
And upper surfaces 22 of the pivot shafts 4a, 4b, 5a, 5b.
Is formed by the upper surface forming die portion 21 of the upper die 18, and the lower surface 23 of the pivot shafts 4 a, 4 b, 5 a, 5 b is formed by the lower surface forming die portion 24 protruding from the lower die 19.

After the injection of the molten resin, the upper and lower dies 18, 19 are separated, whereby the molded product of the outer shell 1a of the container body 1 is taken out. In the opening 2 of the molded product, a mold insertion hole 11 is formed by detaching the lower surface forming mold portion 24 from the upper mold 18, and the mold insertion hole 11 is covered and closed by the cover 12 as described above. .

In addition, the lower outer shell indicated by reference numeral 1c in FIG. 5 is formed by a separate mold from the upper one, and its manufacturing method is the same as that of the upper outer shell 1a. The description is omitted. The upper and lower outer shells 1a and 1c are fitted together at a fitting portion 1d after they are formed, and are fixed with set screws 1e.

In this embodiment, the container is an adiabatic insulated container. However, the present invention can be applied to an insulated insulated container such as an incubator and a general container not using an insulating material. In addition, although the description has been given of the case of the double-opening lid in which the lid can be selectively opened and closed from any side of the opening, the lid can also be used as a locking mechanism of the lid that can be opened and closed only from one side. . Furthermore, although the description has been made with the square opening and the opening / closing lid, the opening and the lid having a round shape or the like may be used as a hinge portion or a latching mechanism of the opening lid.

Embodiment 2 In the container shown in FIG. 7, an opening 27 for feeding fish or the like is formed in an opening / closing lid 26 of a container main body 25, and this opening 27 is formed.
Is opened and closed by a lid 28.

The lid 28 can be opened and closed from either side of the container body 25. As shown in FIGS. 8 and 9, pivotal shafts 29 and 30 for opening and closing the lid 28 are opened and closed.
6 on the left and right of the opening 27.

The opening / closing lid 26 is formed by filling a heat insulating material 26b into the hollow of an outer shell 26a made of a synthetic resin injection-molded product, and has opposing walls 31a, 31
b, 32a, 32b and other opposing walls 32a, 32b opposing each other in a direction orthogonal thereto. Opposing wall 31
An opening edge 33 protrudes from the lower part of each of a, 31b, 32a, and 32b toward the center of the opening 27 in a shelf shape. A groove 34 is formed at the tip of the opening edge 33 along the contour of the opening 27, and a packing 35 that is in contact with the inner surface of the lid 28 is fitted and fixed in the groove 34. .

The pivot shafts 29, 30 are connected to the opposing wall 31.
a, 31b are linearly bridged between the other facing walls 32a, 32b in the vicinity of each of the openings 2a, 31b.
7 is parallel to the upper edges of the opposing walls 31a and 31b, and is integrated with the opening 27.

A mold insertion hole 36 is formed in the opening edge 33 immediately below the pivot shafts 29, 30 due to a molding method of the opening / closing lid 26, which will be described later. 1 (see FIG. 4).
See).

The lid 28 is provided with an opening 27 of the opening / closing lid 26.
Is a plate that fits into a recess formed by the opposing walls 31a, 31b, 32a, 32b and the opening edge 33, and is a shell 28a made of a synthetic resin injection molded product as in the opening / closing lid 26. It is configured.

On the left and right sides of the lid 28, inverted U-shaped receiving portions 37 are provided corresponding to the pivot shafts 29 and 30, respectively. 30 is fitted so as to be detachable. A concave portion 38 extending in the left-right direction is formed in the upper portion of the lid 28, and two operation pieces 39a, 39b are inserted into the concave portion 38 so as to be movable in the left-right direction.

A slider 40 is provided in the outer shell 28a of the lid 28 so as to correspond to each of the pivots 29 and 30.
The slider 40 is provided so as to be in contact with the side wall 38a in the concave portion 38, and is connected to the operation pieces 39a and 39b through a long hole 41 provided on the side wall 38a and extending left and right. A compression spring 42 is interposed between the left and right operation pieces 39a and 39b, and the operation pieces 39a and 39b are constantly urged toward the respective pivot shafts 29 and 30.

As a result, the operation pieces 39a and 39b are
9, the slider 40 closes below the inverted U-shaped groove of the receiving portion 37 and moves in the reverse direction together with the receiving portion 37 when the slider 40 is moved to the left and right ends in the recessed portion 38 as shown in FIG. It will be restrained in the U-shaped groove. For this reason, the lid 28 is
It becomes impossible to leave from 7. Further, the operating pieces 39a and 39b are pressed by the operator's finger against the urging force of the compression spring 42 to form the recessed portion 38.
When the inside is pulled toward the center, the sliding piece 40 releases under the inverted U-shaped groove, so that the pivots 29 and 30 can be detached from the inverted U-shaped groove of the receiving portion 37. Therefore, if one of the operation pieces 39a, 39b is moved in the opening direction, the lid 28 can be opened from the opened side, and the lid 28 is pivotally supported on the other operation piece 39b, 39a side. The shaft is opened with the shafts 29 and 30 as fulcrums. In addition, both operation pieces 39a,
When the cover 39b is moved in the opening direction, the lid 28 is
7 can be completely removed.

Next, a method for forming the opening 27 will be described with reference to FIGS. As shown in the right half of FIG. 10, the upper and lower dies 43 and 44 are clamped to form the cavity 45 of the outer shell 26 a of the opening / closing lid 26. In this case, the upper mold 43 is a movable mold, the lower mold 44 is a fixed mold, and the upper mold 43 comes into contact with and separates from the lower mold 44. The mold 44 may be a movable mold.

As shown in the right half of FIG. 10 and in FIG. 11, the upper die 43 is provided with an upper surface forming die portion 48 for forming the upper surfaces 46 of the pivot shafts 29, 30. The upper surface forming mold portion 48 is formed at the back of a groove formed along the contact / separation direction A of the upper and lower molds 43 and 44. The lower die 44 is provided with a lower surface forming die portion 49 for forming the lower surface 47 of the pivot shafts 29, 30. The lower surface forming mold 4
9 protrudes in the direction A of contact and separation of the upper and lower dies 43, 44 so as to penetrate the cavity 45a for forming the opening edge 33, and is fitted in the groove to form the upper surface forming mold portion 48.
In addition, a cavity 45b for the pivot shafts 29 and 30 is formed.

After the upper and lower dies 43 and 44 are combined, the molten resin is injected into the cavity 45, and the opening 27 of the opening / closing lid 26 is formed integrally with the pivot shafts 29 and 30. That is, the opposing walls 31a, 31b, 32 on the inner periphery of the opening 27
Upper and lower dies 43 and 44 in which opening edges 33 protruding from the lower portions of a and 32b toward the center of the opening form upper and lower surfaces of the opening 27.
The upper surface 46 of the pivot shafts 29, 30 is
And the lower surface 47 of each of the pivot shafts 29, 30 projects from the lower die 44.
Is formed.

After the injection of the molten resin, the upper and lower dies 43 and 44 are separated, so that the molded product of the outer shell 26a of the opening / closing lid 26 is taken out. In the opening 27 of the molded product, a mold insertion hole 36 is formed by detaching the lower surface forming mold portion 49 from the upper mold 43, and the mold insertion hole 36 is closed by the cover 12 being fitted therein as described above. It is. By providing the cover 12, the penetration of water into the heat insulating material 26b is prevented, the heat insulating material 26b is prevented from being damaged, and the cooling / heating power is maintained.

In this embodiment, the description has been made of the heat insulating and cooling container. However, the present invention is applicable to a heat insulating container such as an incubator and a general container not using a heat insulating material. Also,
Although the above description has been made with reference to the double-opening lid in which the lid can be selectively opened and closed from any side of the opening, the lid can also be used as a locking mechanism for the lid that can be opened and closed only from one side.

[0037]

According to the first aspect of the present invention, an opening edge protrudes from the lower part of the opposing wall of the opening toward the center of the opening, and the lower surface of the pivot shaft is formed at the opening edge. An insertion hole through which the mold is inserted is formed vertically, and the upper surface of the pivot shaft is formed by a mold for forming the upper surface of the opening, and the other opposing wall close to the opposing side parallel to the opposing side of the opening. Since the pivot shaft is formed integrally with the opening between the openings, the pivot shaft can be formed integrally with the opening by fixed and movable types whose upper and lower surfaces form the upper and lower surfaces of the opening. Therefore, in forming the pivot shaft, not only the molding dies other than the fixed mold and the movable mold are not necessary, but also the driving of the slide mold other than the fixed mold and the movable mold during molding is not required, so that the production efficiency is reduced. Can be improved.

Further, since the upper surface and the lower surface of the pivot shaft are formed by the fixed mold and the fixed mold, the molding dies are positioned so as to face each other by the diameter of the pivot shaft, and the pivot shaft forming portions of both types are formed. Since there is no contact at the time of molding, the life of the mold and the yield rate of the molded product can be improved.

Further, since the pivot can be formed integrally with the opening at the time of forming the opening, there is no need for an assembling operation such as installation of the support after molding, and it is not necessary to separately manufacture and manage the support and the like. In addition, the manufacturing process can be simplified and simplified, and the manufacturing cost can be significantly reduced.

According to the second aspect of the present invention, the pivot shaft is formed only at a position close to the other opposing wall, and the pivot shaft is formed integrally with the bracket integrally projecting upward from the opening edge. Therefore, the support shaft can be formed in a short length only at a position close to both wall surfaces, and the bending of the pivot shaft when opening and closing the opening cover can be prevented, so that the opening cover can be stably and firmly hinged to the opening. Also, it is possible to prevent breakage such as breakage due to bending of the pivot shaft or the like.

According to the third aspect of the present invention, the mold insertion hole for forming the lower surface of the pivot shaft, which is formed vertically through the opening edge, is closed by the cover. Water into the container via the mold insertion hole for forming the shaft lower surface,
It is possible to prevent inflow of dust and air, and conversely, outflow of cool air and warm air in the heat insulating container.

[Brief description of the drawings]

FIG. 1 is a perspective view of a container having an opening structure according to the present invention.

FIG. 2 is a partially cutaway plan view of a container.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a partially cutaway perspective view of a cover.

FIG. 5 is a vertical sectional view showing a container main body and a mold for forming an outer shell half each;

FIG. 6 is a sectional view taken along line VI-VI in FIG. 5;

FIG. 7 is a perspective view of a container having an opening structure according to another embodiment.

FIG. 8 is a partially cutaway plan view of an opening / closing lid of the container.

FIG. 9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a vertical sectional view showing an outer shell of an opening and a mold thereof in half.

11 is a sectional view taken along line XI-XI in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Container main body 2, 27 ... Opening part 3, 28 ... Lid 4a, 4b, 5a, 5b, 29, 30 ... Pivot shaft 6a, 6b, 31a, 31b ... Opposing wall 7a, 7b, 32a, 32b ... etc. 8, 33 ... Opening edge 10 ... Bracket 11, 36 ... Lower surface forming die insertion hole 12 ... Cover 21, 48 ... Upper surface forming die 22, 46 ... Upper surface 23, 47 ... Lower surface

Claims (3)

[Claims] In a structure of an opening such as a container provided with a pivot shaft of a lid for opening and closing an opening of a housing-like container main body, from a lower portion of a facing wall of the opening toward a center of the opening. An opening edge protrudes, and an insertion hole through which a lower surface forming die for forming the lower surface of the pivot shaft is inserted is formed in the opening edge in the vertical direction, and the upper surface of the pivot shaft is used for forming the upper surface of the opening. A container which is formed in a mold and forms a pivot shaft integrally with the opening between other opposing walls near the opposing side in parallel with the opposing side of the opening, and spans the container. Etc. Opening structure. 2. The pivot shaft is formed only at a position close to another opposing wall of the opening, and the pivot shaft is integrally formed with a bracket integrally projecting upward from the opening edge. The structure of an opening of a container or the like according to claim 1. 3. The method according to claim 1, wherein a mold insertion hole for forming a lower surface of the pivot shaft, which is vertically formed through the opening edge, is closed by a cover. Structure of the opening of the container or the like described in the above.