JPH09315414A - Box-closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closing device which makes it possible to use a box a number of times and, further, has a sealing function. SOLUTION: A box-closing device comprises an integrally molded synthetic resin, wherein claw bodies 3 and 3a are arranged opposite each other in compartments 2b and 2c formed in the main body 2 of a frame body, their bases 5 are fixed to both ends of the main body 2, the claw bodies 3 and 3a are fixed to both the ends of the main body 2 via connecting parts 4 whose bases 5 can be cut, and claws 7 which engage with a box are projectingly formed at the front ends of turning bodies 6 constituting the claw bodies 3 and 3a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin closure for closing and closing a lid of a cardboard box or a similar box.

[0002]

2. Description of the Related Art Paper-made cardboard boxes and lightweight boxes made of synthetic resin are used as boxes for storing various lightweight products such as vegetables, flowers, clothes, home appliances, etc. It is often used as a storage box for etc. The method of closing the lid of the box used for these purposes is usually the method of closing with a sticky tape or metal closure (stapler) in the case of boxes used for one-time transportation like vegetables and flowers. Is used for.

In addition, in the case of products that are often opened for introduction, confirmation, explanation, etc. of products such as home electric appliances, avoiding the difficulty of opening and the risk of injury like adhesive tapes and metal closures. In that sense, a synthetic resin closure that is easy and safe to open while securely closing is disclosed in Japanese Patent Publication No. 57-57326.
It is proposed in the Gazette. On the other hand, a returnable box is used for transporting goods such as clothing shipped from a warehouse such as sports equipment to a store or for transporting goods without store sales.
Since this returnable box needs to reliably deliver products and other packages from the place of departure to the place of arrival, the source of the product, etc. and the product etc. should be checked by using a closure that can confirm the open / closed state of the lid. We need to guarantee quality and quantity. Further, it is desirable that the returnable box can be easily opened, the time required to display the product at the store can be shortened, and the returnable box can be used repeatedly.

[0004]

DISCLOSURE OF THE INVENTION The closure made of synthetic resin described in the above publication is used for closing the lid of a box containing commodities such as home electric appliances and can be surely closed. , It is excellent in that it can be opened easily by the user himself. However, this closure is designed to support and fix the lid with two or more lids of the box pierced by the nails and punching holes to allow the nails to penetrate to the back side of the lids. It is suitable for packaging products that are difficult to get scratched by using. However, it is not suitable for closing a lid of a commodity such as clothes, which is flexible and easily damaged, or a box used for transporting luggage only in a predetermined section or a box used for relocation, which is repeatedly used. In addition, as described above, there is a problem that the nail easily breaks the product, and it has no function as a closure.

The present invention eliminates the drawbacks of the closure device for the lid of the box described above, does not damage the lid, allows the box to be used multiple times, does not damage the product, and has a sealing function. A closure made of resin is provided. It is especially suitable for closures of delivery boxes that are frequently delivered such as mail-order sales and non-store sales.

[0006]

To achieve the above object, a box closure integrally formed of a synthetic resin according to the present invention is constructed as follows. 1) Claw bodies 3 and 3a are arranged facing each other in chambers 2b and 2c formed inside a frame-shaped main body 2, and base portions 5 thereof are fixed to both ends of the main body 2, and claw bodies 3 and 3a. Is fixed at both ends of the main body 2 through the connecting portion 4 which can be cut,
Further, a claw 7 that engages with the lid of the box is provided at the tip of the rotary body 6 that constitutes the claw bodies 3 and 3a, and is formed of an integrally molded product of synthetic resin.

2) The pawls 3 and 3a are connected to a base portion 5 connected via a plurality of small-section cuttable connecting portions 4, and to the base portion 5 via a thin hinge portion 5a. It is composed of a rotating portion 6 and a claw 7 protruding from the tip of the rotating portion 6. 3) The claw bodies 3 and 3a are a base portion 5 connected via a plurality of small-section cuttable connecting portions 4, and a rotating portion connected to the base portion 5 via a thin hinge portion 5a. 6 and a claw 7 projecting at the tip of the rotating part 6, the thick parts 9 and 9a are projected on both sides of the rotating part 6, and are fitted into holes 17 opened in the lid of the box 16 to be closed. It is configured as a guide part that does.

It is preferable that the thick portions 9 and 9a are formed on both surfaces of the rotating portion 6 (a part of the rotating portion 6 has a cross-shaped cross section), which will be described in the embodiment. Also, a shape (a cross section or a T shape) in which the thick portion 9 is omitted on one side can also be used. The main portion of the rotating portion 6 is formed in the shape of two rods, and a window 8 is formed between these rod-shaped portions. This window 8 is a path through which a mold for forming the claws 7 is passed. There is also a meaning to give flexibility to the rotating portion 6.

4) The hinge portion 5a connecting the base portion 5 and the rotating portion 6 is stronger than the breaking strength of the connecting portion 4. It is most efficient in terms of molding to form the hinge portion 5a in the form of a thin sheet, but other structures can also be used. 5) The claw bodies 3 and 3a are a base portion 5 connected via a severable connecting portion 4, and a thin hinge portion 5a to the base portion 5.
Has a turning portion 6 connected via a rotary member 6 and a claw 7 protruding from the tip of the turning portion 6, and has a thick portion 9, on both sides of the turning portion 6.
9a is projected, and the hole 17 opened in the box 16 is closed at the end 9c of the thick portion 9 adjacent to the hinge 5a. This end portion 9c allows the closure 1 to have a hole 17
It has a function of closing the entrance of this hole 17 when it is inserted into the hole.

6) The connecting portion 4 is formed in a thin sheet shape. However, if the connecting portion 4 is formed in a thin sheet, it may be difficult to adjust the breaking strength. Therefore, by forming a relatively thick connecting portion 4 and forming a groove-like weak portion having a V-shaped cross section on the connecting portion 4, it is possible to accurately The breaking strength can be set to. Further, instead of the groove shape of the V-shaped cross section or in combination with the groove shape, it is possible to make a hollow or a hole in a dotted line.

7) The pawls 3 and 3a are connected to a base portion 5 connected via a plurality of small-section cuttable connecting portions 4, and to the base portion 5 via a thin hinge portion 5a. A box 1 that has a rotating portion 6 and a claw 7 protruding from the tip of the rotating portion 6, and has thick portions 9 and 9a protruding from both sides of the rotating portion 6 to close the box 1.
A guide part that fits into the hole 17 opened in 6, and
When the connecting portion 4 is cut, the end portion 9b of the thick portion 9a is brought into contact with the thick portion 5b of the base portion 5 to act as a cradle so that the connecting portion 4 can be easily cut. .

[0012]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a plan view of the closure, FIG. 2 is a rear view of the same, FIG. 3 is a partially cut side view, and FIG. 4 is a partially cut cross-sectional view. The closures of various boxes according to the present invention are molded from a flexible industrial resin such as nylon or polypropylene, and can be closed without causing significant damage to the lid of the corrugated cardboard box to be closed. It provides a sealing function.

In the closure 1 according to the present invention, the claw bodies 3 and 3a are arranged inside the elongated frame-shaped main body 2 so as to face each other in the central portion, and the base portion 5 at the end of the claw bodies 3 and 3a is arranged. The claw bodies 3 and 3a are provided in the main body 2 by a plurality of severable connecting portions 4 and are used for closing and fixing a lid or a closing member of a box-shaped object such as a cardboard box or a synthetic resin box. It is pulled up, engaged with the lid, and closed.

The main body 2 is formed in an elongated frame shape or a frame shape, and has two chambers 2 while the central portion is reinforced by the connecting body 2a.
It is divided into b and 2c. And each chamber 2b, 2
The claw bodies 3 and 3a are arranged in c, and are fixed by the three connecting portions 4 with the base body portion 5 outside. The connecting portion 4 is a member for giving a closing function to the closure 1, and in this embodiment, the main body 2 side is formed thick and the base body 5 side is formed in a reduced triangle, and the tip end thereof is connected to the base body portion 5. The connected portions are configured to break when the claws 3 and 3a are strongly pulled.

A thin hinge portion 5a is provided on one of the thick base portions 5, and the rotating portion 6 is supported via the hinge portion 5a. The rotating portion 6 is a portion that is bent from the main body 2 and is inserted into the lid side of the box, and is provided with a mulberry-shaped claw 7 (or an engaging portion) at its tip. A window 8 is opened below the claw 7 and the main portion of the rotating portion 6 is formed in the shape of two rods to give the rotating portion 6 flexibility. A claw 7 is supported on the tip of the rotating part 6, and a rear part of the claw 7 is extended to provide an engaging part 7a. The claw 7 is formed in a pickaxe shape as a whole.
The window 8 also has an effect of facilitating bending of a passage of a die member for molding the claw 7 and a part of the rotating portion 6 constituting the claw bodies 3 and 3a.

As shown in the plan view of FIG. 1, a T-shaped thick portion 9 is provided at a portion adjacent to the hinge portion 5a for supporting the rotating portion 6, and a letter-shaped thick portion 9a is provided on the back surface of FIG. As shown in FIG. 4, the base portion of the rotating portion 6 is formed in a cross shape to reinforce the pawls 3 and 3a. Further, the portion 9c of the T-shaped thick portion 9 has a function as a lid for closing the entrance portion of the hole provided in the lid of the box to be closed.

As shown in FIGS. 3 and 4, thick portions 9 and 9a are formed on both sides of the root portion of the rotating portion 6, but the front side is formed thinner than the back side, and the thickness thereof is claws. It is about 1/3 of the projecting width of the claw 7 so that the claw 7 is securely engaged with the back side of the box lid so as not to reduce its strength. On the other hand, the thick portion 9a on the back side is formed to be considerably thicker than the thick portion 9 formed on the front side, and the corners 9b of the thick portion 9a are brought into contact with the stopper and the hole which come into contact with the thick portion 5b of the base portion 5. It has a function as a guide. The thick portion 9 formed on the upper surface also functions as a guide to be inserted into a hole formed in the lid of the box described later,
When the rotating portion 6 is inserted into the hole formed in the lid, no large rattling occurs.

In FIG. 3, symbol F indicates the surface of the closure 1,
Further, reference numeral B indicates the back surface, but chamfering 11 is performed around the front surface F, and the middle portion of the back surface B is shaved to form the finger hook portion 12. The closure 1 is manufactured by injection molding. As shown in FIG. 5, the adjacent closures 1 are connected to each other by a connecting body 15 to form a flat collective closure N, and the collective closure N is formed. When the mounting device (details not shown) is loaded and the lever is operated, the connecting body 15
11 to separate the closures 1 one by one, and as shown in FIG. 11, the pressing body 20 advances in the direction of the arrow D, and the pressing portion 21 formed in a stepped shape at the tip of the pressing portion 20 forms the thick portion 9 Press,
As shown in FIG. 12, the claw bodies 3 and 3 a are erected in a rectangular shape with respect to the main body 2.

In this state, one closure 1 is held at the tip of the mounting device with its claws 3 and 3a standing upright like two corners. The two claws 3 and 3a standing in this manner are simultaneously inserted and pressed into the two holes formed in the lid of the box such as the cardboard box to be attached. Therefore, the claws 7 provided at the tips of the claw bodies 3 and 3a are dimensioned so that there is a slight gap between the tip 7a and the back side of the lid when the claws 7 are pulled out to the back side of the lid (FIG. 9).

FIG. 6 shows a perspective view of one closure 1 removed from the collective closure N. When it is used for closing the lid 16a of the box 16 such as a cardboard box, etc., FIG. 11 and FIG. As described above, the mounting device is operated to press the rotating portion 6 with respect to the main body 2 with the hinge portion 5a as a fulcrum as shown by arrow A, and as shown in FIG. While rotating in such a manner, it is extruded downward and protrudes in a horn shape. And a hole 17 made in the lid 16a of the box 16 such as a cardboard box
Then, the claw 7 of the claw body 3, 3a is forcibly inserted as shown by an arrow C.

As shown in FIG. 9, the projecting width of the claw 7 is larger than the thick portion 9 and is formed so as to extend outward from the hole 17 so that it can be hooked on the back surface of the lid 16a.
When the claws 3 and 3a are forcibly pushed into the hole 17 up to the back surface of the lid 16a, the tip 7a of the claw 7 goes beyond the periphery of the hole 17 and is locked. In the state shown in FIG. 9, a slight gap d is formed between the tip 7a of the claw 7 and the back side of the lid 16a. Further, in this state, the corner portion 9b of the thick portion 9a formed on the claws 3 and 3a is formed on the thick portion 5a of the base portion 5 so that the base portion 5 is formed.
The postures of the pawls 3 and 3a are maintained in a state of being in contact with the back side of the thick portion 5a and orthogonal to the main body 2. When the closure 1 is attached to the box 16, the hole 17 is closed by the portion 9c of the T-shaped thick portion 9 and the base portion 5, and the claw 7 located on the back side of the lid 16a is operated. Cannot be released from the closed state.

The state in which the closure 1 is attached to the box 16 is as shown in FIGS. 8 and 9, and the lid 16a of the box 16 is securely closed, and the connecting portion 4 is destroyed when it is pulled forcefully. It will exert the "sealing effect". If the closure 1 attached in this way is removed from the box 16 to take out the contents or inspect the inside, the pawls 3 and 3a are cut from the main body 2 from the connecting portion 4 and the seal is destroyed. In the case where an important item is put in the box 16, for example, when a third party intentionally destroys the seal, the contents are no longer guaranteed.

When the closure 1 according to the present invention is to be removed from the box 16, a finger or a removal tool is hung on the finger hook 12 shown in FIGS. 8 and 2, and the main body 2 is moved upward as shown by an arrow D in FIG. When it is pulled up so as to bend, the tip of the claw 7 is caught on the back surface of the lid 16a and resists. When the main body 2 is further pulled up, the weak connecting portion 4 connecting the main body 2 and the base portion 5 cannot withstand the tension due to the thread cutting effect and is broken, so that the claw bodies 3 are inserted into the holes 17. 3a can be left or dropped into the box 16 and the lid 16a can be released freely.

As shown in FIG. 10, in the connecting portion 4, the claw 7 of the claw body 3a is locked to the back side of the lid 16a so as to resist pulling out. Then, the corner portion 9b of the thick portion 9a becomes in a state of supporting the thick portion 5b of the base portion 5, and a large shearing force or tension acts on the connecting portion 4 connected to the base portion 5 to destroy the sealed portion. Will be released. FIG.
(A) to (C) show the order of opening, (A) is a closed state, that is, a sealed state, (B) is a state in which the main body 2 is pulled up as shown by the arrow D, the nail 7 of the nail body 3a. The tip of the tool acts on the back side of the lid 16a and resists the closure 1 from coming off the box 16.
Further, when the main body 2 is pulled up as shown by an arrow D'in FIG. (C), the claw 7 and the locking portion 7b protruding on the opposite side of the claw 7 are hooked around the hole 17. In this state, the claw body 3a has a hole 17
Although slightly protruding, the thick portion 5b and the corner portion 9b of the base portion 5
Contact with each other to generate a shearing force on the connecting portion 4, and finally the connecting portion 4 is broken to separate the main body 2 from the claw bodies 3 and 3a, the sealing is released and the lid 16a is released, and the contents are removed. Can be taken out.

Although the connecting portion 4 is formed so as to be cut into a small area as shown in FIGS. 1 and 2 in this embodiment, the connecting portion 4 is not limited to this and is not limited to this. 13 is formed in a thin sheet shape, and a fracture groove having a V-shaped cross section is formed even in a relatively thick portion.
As described above, the sheet-like connecting portion 4 may be formed to break when a large force is applied to the main body 2 by a tensile force.

FIGS. 5 and 14 to 16 show a closure 1 of another embodiment. This closure 1 has a hole 17 formed in a lid 16a of a box 16 on one surface of a rotating portion 6. It shows a structure in which a portion 9c serving as a lid for closing the is formed. FIG.
13A to 13C show examples in which the shape of the claw 7 at the tip of the claw bodies 3 and 3a is changed, and the closure 1 of the closure 1 described above with reference to FIGS. In contrast to the claw bodies 3 and 3a, the tip portion 7a extending to the opposite side of the claw 7 is omitted. In the case of the claw bodies 3 and 3a, it is preferable that the rotating portion 6 has a strength such that it is relatively hard to bend and the claw 7 holds the back surface of the lid 16a exclusively.

Since the closure 1 according to the present invention is easy to attach when the attachment device is used, it is relatively difficult to replace the closure 1 during transportation and also has an auxiliary sealing effect. There is.

[0028]

In the box closure 1 according to the present invention, the claw bodies 3 and 3a are arranged so as to oppose the chambers 2b and 2c formed inside the frame-shaped main body 2, and the base portion 5 of the main body is formed. It is fixed to both ends of the main body 2, and the claws 3 and 3a are fixed to both ends of the main body 2 via the connecting portion 4 to which the base body 5 can be cut. A claw 7 that engages with the closed body is formed at the tip of the moving body 6 integrally with the projecting structure with synthetic resin.

Therefore, the hole 17 opened in the lid 16a of the box 16
It is possible to easily press and attach the closing tool 1 by utilizing, and securely engage the claw 7 with the box 16 to achieve the closing and sealing effect of the lid 16a. When the main body 2 is pulled strongly, the connecting portion 4 connecting the claw bodies 3 and 3a and the main body 2 is destroyed, and it is possible to clearly confirm whether or not the lid 16a is released. it can.

Further, by constructing the closure 1 as described above, it is possible to manufacture a collective closure N in which a large number of closures 1 are connected as shown in FIG. 5, and a collective closure having such a shape. By setting it to N, it can be loaded into the mounting device and automatically extruded to be mounted in the box.

[Brief description of drawings]

FIG. 1 is a plan view of a closure according to a first embodiment of the present invention.

2 is a rear view of the closure of FIG. 1. FIG.

FIG. 3 is a side view of the closure shown by cutting a part thereof.

FIG. 4 is a cross-sectional view of the closure shown by cutting a part thereof.

FIG. 5 is a perspective view of a collective closing body in which a large number of closing tools are connected in a flat plate shape.

FIG. 6 is a perspective view of a single closure.

FIG. 7 is an explanatory view showing a state in which the closing tool is attached to the box.

FIG. 8 is a perspective view showing a part of a box whose lid is closed by a closing tool.

FIG. 9 is a cross-sectional view showing the action of the closing tool.

FIG. 10 is a cross-sectional view showing a process of removing the closing tool from the box.

FIG. 11 is an explanatory view of the raising operation of the claw body using the attachment device.

FIG. 12 is an explanatory diagram of the raising operation of the claw body using the attachment device.

FIG. 13 (A) is a cross-sectional view showing a closure-like closure,
(B) is a cross-sectional view showing an initial stage when the closure is removed,
(C) is a cross-sectional view showing a state in which force is further applied to the closure.

FIG. 14 is a plan view of the closing tool according to the second embodiment.

15 is a front view in which the closure shown in FIG. 14 is partially cut.

16 is a rear view of the closure of FIG.

FIG. 17 is an explanatory view of the action of a nail body having a third type of nail, (A) shows a sealing shape, (B) shows an initial stage when destroying the sealing, and (C) shows a final state. Each step is shown.

[Explanation of symbols]

1 Closing tool 2 Main body 2a Connection body 2b, 2
c chamber 3,3a claw body 4 connecting portion 5 base portion 5a
Hinge part 7 Claw 7a Tip 7b Locking tool 8 Window
9, 9a Thick part 9b Corner part 9c Lid part 11 Chamfer part 12 Claw hook part 15 Connected body 16 Box 16a Lid 17
Hole 20 Pressing body 21 Pressing part

Claims (7)

[Claims] 1. Chambers 2b, 2 formed inside a frame-shaped main body 2.
The base parts 5 are fixed to both ends of the main body 2 by arranging the claw bodies 3 and 3a facing each other at c, and the claw bodies 3 and 3a are connected to the claw bodies 3 and 3a through the connecting part 4 which can be cut by the base part 5. Closing a box made of a synthetic resin integrally-molded product that is fixed at both ends of the main body 2 and further has projecting claws 7 that engage with the box lid at the tips of the rotating bodies 6 that form the claw bodies 3 and 3a. Ingredient 2. The claws 3 and 3a are connected to a base portion 5 which is connected via a plurality of small-section cuttable connecting portions 4, and to the base portion 5 via a thin hinge portion 5a. Rotating part 6
And a claw 7 protruding from the tip of the rotating portion 6. 3. The claws 3, 3a are connected to a base portion 5 which is connected via a plurality of small-section cuttable connecting portions 4, and to the base portion 5 via a thin hinge portion 5a. Rotating part 6
And a box 16 that has a claw 7 protruding at the tip of the rotating portion 6 and that has thick portions 9 and 9a protruding on both sides of the rotating portion 6 for closing.
The box closing tool according to claim 1, wherein the box closing tool is a guide portion that fits into a hole 17 opened in the lid. 4. The box closing tool according to claim 2 or 3, wherein the hinge portion 5a connecting between the base portion 5 and the rotating portion 6 is formed to be stronger than the breaking strength of the connecting portion 4. 5. The claw bodies 3 and 3a include a base portion 5 connected via a severable connecting portion 4, and a rotating portion 6 connected to the base portion 5 via a thin hinge portion 5a. , This rotating part 6
Has a projecting claw 7 at its tip, projects thick parts 9, 9a on both sides of the rotating part 6, and further opens in the box 16 at the end 9c of the thick part 9 adjacent to the hinge part 5a. The box closing tool according to claim 1, wherein the hole 17 is closed. 6. The box closing tool according to claim 1, wherein the connecting portion 4 is formed in a thin sheet shape. 7. The claw bodies 3 and 3a are connected to a base portion 5 connected via a plurality of small-section cuttable connecting portions 4, and to the base portion 5 via a thin hinge portion 5a. Rotating part 6
And a box 16 which has a claw 7 protruding from the tip of the rotating portion 6 and which closes by projecting thick portions 9 and 9a on both sides of the rotating portion 6.
The connecting portion 4 is used as a guide portion that fits into the hole 17 opened at the same time, and the end portion 9b of the thick portion 9a is brought into contact with the thick portion 5b of the base portion 5 when the connecting portion 4 is cut. The box closure device according to claim 1, which is easily cut.