JP2964337B1 - Square closed container - Google Patents

Abstract

An object of the present invention is to provide an inexpensive container that satisfies the effective use of a storage space in a warehouse or the like, sealability, drop strength, and stacking strength, and reduces the number of processing steps and weight. SOLUTION: An annular zone 2 is wound around the body of a rectangular container body.
Press forming, mass production by pressing without attaching reinforcing material to the side, satisfying drop strength and stacking strength, reducing processing man-hour and weight to reduce cost I do. The opening 17 is formed by bending the opening end outward so as to wind the metal core 18 provided in the opening. The strength of the opening 17 is made sufficient, the thickness of the container is reduced, and the deformation of the opening 17 is performed. And maintain the sealing property. Then, a sealing material 19 is provided on the back surface of the lid,
With the opening 17 covered, the L-shaped clamp members 20 for clamping the opening 17 and the cover 21 are applied to the four corners of the rectangular container, and the ends of the clamp members 20 are fastened with bolts. In addition, the surface pressure of the sealing material is made uniform, and the sealing performance and workability are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a rectangular closed container.

[0002]

2. Description of the Related Art The structure of a steel open drum is defined by Japanese Industrial Standards (JISZ1600). A typical structure will be described with reference to FIGS. This open drum is a circular drum having a diameter D1. The open drum main body 1 is provided with an orbicular zone 2 which is formed so as to protrude outward by press working so as to wind around the outer periphery thereof. As shown in FIG. 14, the open end 3 of the open drum main body 1 is wound in a curled shape, and a sealing material 5 is provided on the back surface of the flange portion of the lid 4. Then, the clamp member 6 is mounted with the cover 4 covering the open end 3, and the ends of the clamp member 6 are tightened with bolts 7 as shown in FIG. It is pressed to seal. Also,
Japanese Industrial Standards define airtightness, drop strength, and stacking strength.

Next, a conventional rectangular closed container will be described. FIG. 15 showing the plane of the lid and FIG. 16 showing the front thereof.
In order to prevent swelling, many reinforcing members 8 are attached to the lid 7, and many bolt holes 9 are formed around the lid 7. A handle 10 for lifting the lid 7 is attached. The handles 10 are rotatably mounted so as not to be obstructed during stacking.

FIG. 1 shows a plan view of a main body of a rectangular closed container.
In FIG. 7, a girder 13 is provided on the bottom plate 12, and many reinforcing members 8 are attached so as to connect between the girder 13. The flange 7 provided at the opening end has a cover 7
The bolt holes 9 corresponding to are provided. As shown in FIGS. 19 and 20, a reinforcing member 8 is provided on the side wall 14 in the vertical direction. Then, as shown in FIG. 18, the bolt 16 is inserted into the bolt hole 9 with the sealing member 15 interposed between the flange 11 and the lid 7 and between the bolt 16 and the lid 7, and the lid 7 is inserted into the flange 11. Is to be concluded.

[0005]

In the above conventional example,
Although there is no problem in the sealability, drop strength and stacking strength in the one shown in FIG. 13, this container has a cylindrical shape having a diameter D1 and therefore has the following problems to be improved. That is, when this container is put in a warehouse or a hold, there is a problem that a lot of dead space is created and a limited space cannot be used effectively. Also, since the open end is simply bent in a curl shape, the strength of the open end is a problem, and in order to have this strength, a thick plate material must be used, and the container itself must be used. There is a problem that the weight increases. Further, when the cylindrical containers are stacked, there is a problem that a slight shift of the stack may cause the stack to collapse.

Next, in the conventional examples shown in FIG. 15 to FIG. 20, there is no problem in that the storage space such as a warehouse can be used effectively because it is square,
There are the following problems to be improved in terms of sealing properties and bulging strength. First, the sealing property will be described. As shown in FIG. 18, the sealing member 15 is interposed between the flange 11 and the lid 7 and is tightened with the bolt 16. Is not uniform, there is a problem in terms of sealing performance due to poor sealing performance.
Further, it is extremely difficult to uniformly tighten a large number of bolts to make the surface pressure of the sealing material uniform, and there is a problem that the reliability of the sealing property is low. Skill is required to uniformly tighten many bolts, and there is a problem in workability.

Next, the swelling strength will be described. In particular, it is necessary to insert a reinforcing material vertically in the side wall as shown in FIGS. 19 and 20, and when a large wall pressure is applied, more reinforcing materials are required. Need to be inserted. For this reason, the number of steps for attaching the reinforcing material by welding or the like increases, which makes it difficult to mass-produce the material, resulting in a problem that the container becomes expensive and the weight increases.

[0008] The present invention provides a rectangular closed container so that a storage space in a warehouse or the like can be effectively used.
An object of the present invention is to provide a rectangular closed container that satisfies sealing performance, drop strength, and stacking strength, further reduces the number of processing steps and weight to make an inexpensive container, and has improved workability.

[0009]

Means for solving the above-mentioned problems, which is grasped from the description of claim 1, is that an outer side convex shape is wound around the body of the rectangular container body having an open upper surface. A plurality of orbicular zones are formed by press working, a metal core is provided in the opening, an opening is formed by bending the opening end outward so as to wind the metal core, and a lid for covering the opening is formed. A sealing material is provided on the back surface, the sealing material is pressed against the opening, and the opening and the lid are clamped while the opening is covered.
Apply a U-shaped clamp member to the four corners of the rectangular container,
It is characterized in that the ends of the clamp members are fastened with bolts.

Next, the means grasped from the second aspect is to set the angle of the L-shape of the clamp member so that when the clamp member is attached, the L-shaped end of the clamp member is in close contact with the L-shape. The feature is that the angle is not exceeded.

[0011] A means grasped from the third aspect is characterized in that the cross-sectional shape of the clamp member is a wedge shape sandwiching the lid and the opening.

Next, how the problem is solved by means understood from the description of each claim will be described. First, in the means grasped from the description of claim 1, so as to wind the body of the rectangular container body having an open upper surface,
Since a plurality of outer annular zones are formed by press working, mass production can be performed by press working without attaching a reinforcing material to the side surface. In addition, since a metal core is provided in the opening and the opening is formed by bending the opening end outward so as to wind the metal core, the strength of the opening can be sufficiently increased, and the thickness of the container can be reduced. can do. And
An L-shaped clamp member for providing a sealing material on the back surface of the lid for covering the opening, pressing the sealing material on the opening, and clamping the opening and the lid with the opening covered. Are applied to the four corners of the rectangular container, and the ends of the clamp member are fastened with bolts, so that the surface pressure of the sealing material can be made uniform.

[0013] Next, in the means grasped from the second aspect, the angle of the L-shape of the clamp member is set to a right angle so that the end of the L-shape of the clamp member is in close contact when the clamp member is mounted. Since the angle is not exceeded, the surface pressure of the sealing material can be made more uniform.

Next, in the means grasped from the third aspect, the cross-sectional shape of the clamp member is formed in a wedge shape sandwiching the lid and the opening, so that the opening can be securely pressed by the sealing material. .

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention which are understood from the description of each claim will be described. First, an embodiment of the present invention grasped from the description of claim 1 is a rectangular container having an upper surface opened as shown in FIG. 1, and as shown in FIG. As described above, a plurality of annular zones 2 having a convex shape on the outside are formed by pressing. As shown in FIG. 7, a metal core 17 is provided in the opening, and the opening end is formed by bending the open end outward so as to wind the metal core 18. Then, the sealing material 1 is placed on the back surface of the lid 21 that covers the opening 17.
9 is provided, and the sealing material 19 is pressed into the opening 17. Then, with the lid 21 covered with the opening 17, the L-shaped clamp member 20 (see FIG. 10) for clamping the opening 17 and the lid 21 is attached to the four corners of the rectangular container as shown in FIG. , And as shown in FIG.
1 are fastened to each other with bolts 22.

Next, according to the embodiment of the present invention grasped from the description of claim 2, as shown in FIG. 10, the angle α of the L-shape of the clamp member 20 is determined as shown in FIG. The angle is set so as not to exceed a right angle so that the L-shaped end of the clamp member 20 may be in close contact when mounted.

Next, according to an embodiment of the present invention as understood from the description of claim 3, as shown in FIG.
The cross-sectional shape of 0 is a wedge shape sandwiching the lid 21 and the opening 17.

[0018]

An embodiment of the present invention will be described below.
FIG. 1 is a view showing a plane of the rectangular closed container, in which the angle is bent at a predetermined bending radius R. And FIG.
As shown in FIG. 2, a plurality of orbicular zones 2 are formed around the body 24 at a pitch interval P. As shown in FIG. 7, the orbicular zone 2 is formed by pressing the body 24 so as to protrude outward. Further, the pitch interval P is determined so that the stacking load is cut off, and the buckling strength can be increased as the pitch interval P is reduced and the annular zone 2 is provided more.

In FIG. 2, a girder 13 is attached to the bottom plate 12 (see FIG. 1). By attaching this girder member 13, a clearance is provided between the mounting surface of the rectangular closed container and the fork of the forklift can be inserted, thereby facilitating the cargo handling operation. In addition, this girder material 1
Reinforcing ribs 23 are provided between the base plates 3 so that the bottom plate 12 has strength against bulging. 8 is a reinforcing member.

FIG. 3 is a plan view of the lid 21 and FIG.
The rectangular shape is similar to the opening 17 of the rectangular closed container body shown in FIG. Then, along the outer shape of the lid 21,
Rib 2 for preventing the deformation of
5 are provided, and a rib 26 for preventing the lid 21 from bulging is further provided. These ribs 25 and 26
It uses thin flat steel to reduce the weight.

3 and 4, a handle 27 is fixed to the lid 21. The width W1 'of the handle 27 is substantially equal to the width W1 between the beam members 13 shown in FIG. As shown in FIG. 5, two handles 27 are provided on both side ends of the lid 21 and are inclined inward by an angle β. As shown in FIG. 6, the handle 27 is formed by bending a bar material, and is reinforced by a reinforcing member 29 so that the handle 27 inclined at an angle β is not bent any further.

As described above, by fixing the grip 27 having the width W1 'and inclined at the angle β to the lid 21 by welding, when the rectangular closed containers are stacked as shown in FIG. Guided by β to facilitate stacking. Further, in a completely stacked state, the grips 27 are fixed while being sandwiched between the girder members 13, so that even when an earthquake or the like occurs, the stacked rectangular closed containers do not slip down. Then, when stacking the rectangular closed containers, even if the bottom of the rectangular closed container hits the handle 27,
The handle 27 is not deformed by the reinforcing member 29.

In FIG. 7, the open end of the body 24 is
Is formed to form the opening 17. The orbicular zone 2 is formed by press working so as to protrude outward. In addition, a sealing material 19 is provided on the back surface of the flange 28 of the lid 21. Clamp member 20
Has a wedge shape sandwiching the flange 28 of the lid 21 and the opening 17. Then, the flange 28 side (A) is made longer and the opening 17 side (B) is made shorter,
The (A) side is used as a guide surface to facilitate mounting of the clamp member 20, and the elastic force of the clamp member 20 presses the flange 28 against the opening 17 side to press the opening 17 against the sealing material 18. I am trying to do it. A bolt fastening member 30 is integrally provided on the outer surface of the clamp member 20 by welding.
Is formed with a bolt insertion portion 31.

As shown in FIG. 8, the clamp member 20
It is divided into four parts so as to hit the corners of the square closed container. 10 and FIG. 1.
As shown in FIG. 1, it is provided at the end of the clamp member 20. FIG. 9 is an enlarged view of a portion of the bolt fastening member 30 in FIG. 8. In a state where the clamp member 20 is mounted, a gap having a width W2 is opened at the mutual ends. Then, the bolt 22 is inserted through the bolt insertion portion 31,
The clamp member 20 is fastened with the bolt 22 in the direction in which the gap W2 becomes smaller. The clamp member 20 is shown in FIG.
, The angle α does not exceed a right angle (90 degrees). An example is α = 88 degrees.

The operation of the embodiment constructed as described above will now be described. In FIG. 2, a plurality of outwardly projecting orbicular zones 2 are formed by press working so as to wind around the body 24 of the rectangular container main body having an open upper surface. It can be mass-produced by processing. An example of a specific processing method will be described. The annular zone 2 is pressed at a predetermined pitch P on a flat plate, and a core metal is wound around a portion corresponding to an opening end. Is bent at a predetermined bending radius R into a square according to the shape of the container, so that
4 and the opening 17 can be easily formed.

Further, when the contents are put into the open container, the contents may be deformed because the opening itself is not reinforced. Therefore, as shown in FIG.
The opening 17 is formed by bending the opening end outward so as to wind the metal core 18, so that the strength of the opening 17 can be made sufficient and the thickness of the container can be reduced. it can. Further, as shown in FIG. 12, a reinforcing ring 32 can be provided near the opening 17 to further reinforce it.

As shown in FIG. 7, a sealing material 19 is provided on the back surface of the flange 28 of the lid 21 that covers the opening 17, and the sealing material 19 is pressed against the opening 17, and the lid is placed on the opening 17. In this state, the L-shaped clamp members 20 for clamping the opening 17 and the flange 28 of the lid 21 are applied to the four corners of the rectangular container, and the ends of the clamp members 20 are fastened with bolts 22. Accordingly, the surface pressure of the seal member 19 at the corners and sides can be made uniform by the elastic force of the clamp member 20 divided into four parts.

As shown in FIG. 10, when the angle α of the L-shape of the clamp member 20 is set, when the clamp member 20 is mounted, the end of the L-shape of the clamp member 20 is connected to the flange 28 shown in FIG. Since the angle does not exceed a right angle so as to be in close contact with the sealing member 17, the surface pressure of the sealing material 20 can be made more uniform.

This will be described in more detail with reference to FIG.
As shown in (2), the clamp member 20 is mounted so as to be applied to the corner of the rectangular closed container. In this state, the angle α
Since the angle does not exceed the right angle, the corner portion is in a floating state, and the end of the clamp member 20 is in a state of being in close contact with the flange 28 and the opening 17. Then, by tightening the mutual ends of the clamp member 20 with the bolts 22, the angle α is widened, and the clamp member 20 is pressed against the angle and sides, and the clamp member 20 accompanying the spread of the angle α The flange 28 is pressed toward the opening 17 by the elastic force of the above.

The sectional shape of the clamp member 20 is
The wedge-shaped elastic force formed between the flange 28 formed on the lid 21 and the opening 17 makes the flange 28
Is pressed against the opening 17 side, and the opening 17 can be securely pressed by the sealant 19.

[0031]

According to the present invention, which is understood from the detailed description of the invention based on the description of the first aspect, an outwardly projecting shape is provided so as to wind the body of the rectangular container body having the upper surface opened. Multiple zones are formed by press working, and mass production can be performed by press working without attaching reinforcing material to the side, so that drop strength and stacking strength are satisfied, and processing man-hours and weight are further reduced. The cost can be reduced to make the container cheaper.

Further, a core is provided in the opening, and the opening is formed by bending the opening end outward so as to wind the core, so that the strength of the opening is sufficient and the thickness of the container is reduced. Thus, the opening can be prevented from being deformed, the sealing property can be maintained, and the weight can be reduced to provide an inexpensive container.

A sealing material is provided on the back surface of the lid that covers the opening, and the sealing material is pressed against the opening,
In a state where the opening is covered with the lid, an L-shaped clamp member for clamping the opening and the lid is applied to the four corners of the rectangular container, and the ends of the clamp members are fastened with bolts, Since the surface pressure of the sealing material can be made uniform, the sealing performance can be maintained and the workability can be improved. As described above, a rectangular closed container that satisfies the sealing property, the drop strength, and the stacking strength can be obtained, so that the storage space in a warehouse or the like can be effectively used.

Next, according to the present invention, which is understood from the detailed description of the present invention, based on the second aspect, the angle of the L-shape of the clamp member can be changed when the clamp member is mounted. The angle is set so as not to exceed a right angle so that the ends of the character are in close contact, and the surface pressure of the sealing material is made more uniform, so that the sealing performance can be improved.

Next, according to the present invention, which is understood from the detailed description of the present invention, based on the description of the third aspect, the cross-sectional shape of the clamp member is formed in a wedge shape sandwiching the lid and the opening, and the opening is formed. Since the pressure can be securely applied by the sealing material, the sealing performance can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a rectangular closed container according to one embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a plan view of a lid.

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a side view of FIG. 3;

FIG. 6 is a side view of the handle in FIG. 3;

FIG. 7 is a vertical cross-sectional view showing a state of being clamped by a clamp member.

FIG. 8 is a plan view showing a state of being clamped by a clamp member.

FIG. 9 is an enlarged front view showing a bolt fastening portion in FIG. 8;

FIG. 10 is a plan view of the clamp member in FIG. 8;

FIG. 11 is a front view of FIG. 10;

FIG. 12 is a front view showing a state in which rectangular closed containers are stacked.

FIG. 13 is a front view of a conventional open drum.

FIG. 14 is a longitudinal sectional view of a main part in FIG. 13;

FIG. 15 is a plan view of a lid of a conventional rectangular closed container.

FIG. 16 is a front view of FIG.

FIG. 17 is a plan view of a conventional rectangular closed container.

FIG. 18 is an enlarged longitudinal sectional view of a conventional seal portion.

FIG. 19 is a front view of FIG. 17;

FIG. 20 is a side view of FIG. 17;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Open drum main body 2 Ring zone 3 Open end 4 Lid 5 Sealing material 6 Clamping member 7 Lid 8 Reinforcement member 9 Bolt hole 10 Handle 11 Flange 12 Bottom plate 13 Beam material 14 Side wall 15 Sealing material 16 Bolt 17 Opening 18 Core metal 19 Seal Material 20 Clamp member 21 Lid 22 Bolt 23 Reinforcement rib 24 Trunk 25 Rib 26 Rib 27 Handle 28 Flange 29 Reinforcement member 30 Bolt fastening member 31 Bolt insertion part 32 Reinforcement ring

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65D ⁶ /00-8/22 B65D 45/00-55/16 B65D 81/24

Claims (3)

(57) [Claims] 1. A plurality of outwardly projecting annular zones are formed by press working so as to wind around the body of a rectangular container body having an upper surface opened, and a metal core is provided in the opening. An opening is formed by bending the opening end outward so as to wind the seal, a sealing material is provided on the back surface of a lid that covers the opening, and the sealing material is pressure-bonded to the opening. In this state, an L-shaped clamp member for clamping the opening and the lid is applied to the four corners of the rectangular container, and the ends of the clamp member are fastened with bolts. Closed container. 2. The angle of the L-shape of the clamp member is set so as not to exceed a right angle so that the end of the L-shape of the clamp member is in close contact when the clamp member is mounted. 2. The square closed container according to 1. 3. The cross-sectional shape of the clamp member is a wedge shape sandwiching the lid and the opening.
The sealed rectangular container described in any one of the above.