JP2003252358A - Sealed container provided with unfair opening preventing function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealed container with an unfair opening preventing function in which at the same time when a part for the unfair opening preventing function is broken by an opening operation of a lid body, a lid part of the sealed container is opened and the opening operation of the lid body can be simply performed. <P>SOLUTION: A fitting wall 4a to which the lid body 3 is fitted and a flange part 5 on which the lid body 3 is tightly stuck are formed on an opening part 4 of a container main body formed in a box shape in which contents can be stored, and hooking holes 6 into which hooking pieces 2 provided on the lid body 3 are hooked are formed in the flange part to form a container main body 8 on which the lid body 3 can be fitted and sealed. The lid body 3 in which the hooking pieces 2 hooking in the hooking holes 6 formed on the flange part 5 of the container main body are breakably formed on an end face of a fitting edge part 3b hung down on an peripheral edge of an top board part 3a of the lid body, is fitted to the container main body 8, and the hooking pieces 2 are inserted through the hooking holes to hook them on the underside of the flange 5. The sealed container provided with the unfair opening preventing function in which when the lid body is opened, the hooking pieces 2 are breakable, is thus constituted. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container and a container body when the container body is covered with various contents and then the container body is covered and sealed. And connect with a sealing piece formed to make it easy to break and seal,
When opening for the first time, the sealing piece is formed so that it cannot be opened without breaking it, and once the sealing piece is cut and cut, it is formed so that it cannot be resealed. It relates to a sealed container with a tamper-proof function that makes it possible to tell at a glance that the body has been tampered with, and in particular, a sealed container with a lid suitable for containing butter, jam or other food products. When a consumer uses the container by opening the lid, a special tool or operation for opening the container is not necessary, and the container has an illicit opening prevention function that can be easily broken and opened. It concerns a container.

[0002]

2. Description of the Related Art Containers containing various contents such as foods that humans eat are in the process of distribution of the products, especially when the containers are arranged in front of retail stores, and the lids of the containers are illegal. After being opened, the contents of the container are stolen, replaced, or foreign material is mixed into the container, etc., and then the lid is closed again to the original display place. When it is returned, such a situation may occur that it may reach the consumer's hands without noticing such illegal acts, impairing credibility of the product and unknowingly eating the contents, which may endanger the human body. There is.

Therefore, after the contents are stored in the container main body, the lid for sealing the opening of the container and the container main body are hermetically packaged with something which is easily damaged, and the lid is first opened. When opening the container, the hermetically-sealed packaging part is broken, and the opening trace remains on the container once opened so that it can be seen at a glance, and various containers with an unauthorized opening prevention function that can prevent unauthorized opening of the container are available. Proposed and widely used. A closed container provided with such a tamper-evident prevention function must be broken at the breakage part of the closed package that is easily broken when the lid is opened and the contents are to be taken out. Even if the lid is closed again, it cannot be restored as it was, so it will be obvious that it has been tampered with.

[0004] A thin container paper or a film which easily breaks a part of the container such as the entire container or the periphery of the lid portion of the container has been used for a long time as an airtight container having the above-mentioned tamper-proof function. It is known that it is covered and hermetically sealed so that it cannot be illegally opened.However, such hermetic packaging is time-consuming and suitable for single-use containers, but it contains butter, jam, etc. Not suitable for wide-mouthed containers that are used repeatedly. As a wide-mouth container in which such a defect is improved and the opened lid can be closed again to store it, JP-A-52-110175 discloses.
Those described in Japanese Patent Publication have become commonly used.

In the above-described invention, as shown in FIG. 6, the tamper-proof portion is provided on the container body 21 along the entire circumference of the boundary portion for sealingly fixing the sealing lid 22. The tamper-evident prevention portion includes a cutting line 23 that extends around the lower end of the side surface tubular portion of the lid 22 in the horizontal direction and a cutting line 24 that extends vertically from the lower end of the side surface tubular portion of the lid 22 to the cutting line 23 ( (See FIG. 8), and a tab 25 protruding outward from the lid 22 from the vicinity of the cutting line 24 in the side surface tubular portion of the lid 22. Then, when it is opened and used, as shown in FIG. 8, the knob 25 is grasped with a fingertip and pulled in the direction of the arrow to be cut in the vertical direction along the weakened cutting line 24, and then the lid 25 The lid 22 is horizontally cut along a cutting line 23 (see FIG. 7) provided on the entire circumference of the body 22 so that the lid body 22 can be separated from the container body 21 and opened. It is formed so that the contents can be applied to the opening of the container and sealed again after use.

[0006] In the container constructed as described above, the lid cannot be opened unless the cut line 23 is broken. Therefore, the lid which has been opened by once cutting the opening preventing portion of the lid body along the cut line 23 is opened. Since the trace of opening is left on the body, when the container is tampered with, it can be recognized at a glance. However, the above-mentioned closed container has a handle 25
Is protruding from the separating piece 26, the tab 25 collides and the cutting line 24 is broken when the container body 21 containing the contents is covered with the lid 22 for sealing or when the sealed container is transferred. Then, there is a risk that it will be opened naturally without even knowing it.

Further, in order to actually open such a closed container, it is necessary to carry out a breaking operation in which the tab 25 of the tamper-proof portion is grasped by the fingertip and strongly pulled, so that the force of the fingertip is weak. This may be difficult for a child or an elderly person, and since the separating piece 26 has to be cut and removed around the entire circumference of the lid body 22, the cutting operation may feel somewhat troublesome. Furthermore, in order to mold the lid as described above, the cutting line 23, the cutting line 24, and the picking piece 25 must be formed, so that the structure of the lid and the molding die becomes slightly complicated, and its manufacture. It is difficult to reduce the cost, and there is still room for improvement.

Therefore, in an airtight container provided with a means for preventing unauthorized opening such that the lid cannot be opened without breaking the rupturable thin-walled portion, when the container body is covered with the lid and hermetically sealed. Structure of the lid body provided with tamper-proof means as well as a lid body that does not break the thin-walled part in the middle of transferring the container and that can be easily opened at the time of opening. As a hermetically sealed container in which the manufacturing cost can be reduced as much as possible,
A closed container having a structure as described in Japanese Patent No. 244812 is proposed.

The closed container seen in the above publication is shown in FIG.
As shown in FIG. 3, the container main body 31 for containing the contents and the lid 32 for covering the opening of the container main body and sealing the container main body 31 are connected to each other by an opening tab having a thin portion, and an unauthorized opening preventing portion is provided. . The tamper-evident prevention portion extends downward from the lid body 32 between the notch portion 34 formed in a part (for example, two places) of the collar portion 33 at the lower end of the lid body 32 and between the notch portions 34. And the unsealing piece 35 provided as
5, a lid-side locking portion 37 (see FIG. 10B) that locks with a main-body-side locking portion 36 provided in the container main body 31 and an inverted U-shaped portion.
A thin cutoff line 38 formed in a V shape is provided.

As shown in FIG. 10 (b), the closed container having the structure in which such an unauthorized opening preventing portion is formed has an opening piece 35.
By pushing up with your fingertips,
At the same time as the engagement between the main body side locking portion 36 is released, the opening piece 35 is cut along the cutting line 38 (see FIG. 10A), and the lid 32 is separated from the container main body 31. Since the lid is opened, the cut mark remains on the opened lid, and the container that has been illegally opened has a structure that can be confirmed at a glance.

In order to open the closed container having the above-mentioned structure, it is sufficient to cut only the opening piece 35 provided in a part of the lid 32, which reduces the trouble of opening and opens the opening. The piece can be easily cut simply by hanging it up and pushing it up, so it requires less force than conventional ones, so even children and elderly people with weak fingertips can easily open it. , Opening has been reduced. However, in order to actually open the bag, it is necessary to first cut the unsealing piece 35 of the tamper-evident preventing portion before opening the lid body 32 away from the container body 31, so that it is still troublesome as in the conventional example. Is left.

Then, the above-mentioned closed container has an opening piece 35.
After cutting along the cutting line 38, the opening piece 35
Since an opening is formed at a position corresponding to the back part of the container, once the lid 32 is opened and then the lid 32 is reattached and closed to store the contents, dust is put into the container from the opening. There is a risk of intrusion and there is a point that it becomes unsanitary. Further, in the above-mentioned hermetically sealed container, since the U-shaped cutoff line 38 is provided in the opening piece 35 formed so as to be engaged with the cutout portion provided in the flange portion 33 of the container body 31, the structure of the lid body 32 is somewhat. It becomes complicated and it is difficult to reduce the manufacturing cost. Therefore, a sealed container provided with a tamper-evident prevention function is formed so that it can be easily opened, and the structure of the tamper-evident prevention section is formed as simply as possible to reduce the manufacturing cost of the container. The appearance of containers is desired.

[0013]

SUMMARY OF THE INVENTION The present invention was devised in order to solve the above-mentioned problems in the conventional container having the tamper-proof function, and is the same as the conventional closed container having the tamper-proof function. In addition, it eliminates the trouble of separately performing the tampering function breaking operation and the lid opening operation,
It is possible to form a closed container with an tamper-proof function, which is configured so that the tamper-evident function part can be broken and the lid can be opened at the same time so that the tamper-evident function part is ruptured by the opening operation of the lid. To aim.

Then, unlike the conventional closed container, it is not necessary to cut all the tampering prevention function portions provided around the entire circumference of the portion where the lid body and the container body are joined, and the lid body and the container body are eliminated. A joint piece that doubles as a tamper-evident piece is provided at one or more points of the joint that joins and seals with the tamper-evident piece. To provide a closed container with a tamper-evident prevention function, which is configured as a closed container capable of exerting its function, which simplifies the structure of the container and makes it easy to open the lid and reduce the manufacturing cost. .

[0015]

In order to achieve the above-mentioned object, the present invention is formed in a box-shaped container body capable of accommodating the contents so that it can be fitted into the open end of the container body. In an airtight container in which the above-mentioned lid is fitted and hermetically sealed, the container main body is provided with an engagement projection for engaging and locking an inner surface of the lid with the outer peripheral surface of the upper end opening. A brim portion is formed in which the tip portion abuts and is in close contact, and an engaging hole for locking a locking piece provided in the lid body is formed in the collar portion, so that the lid body can be fitted and sealed. Formed on the container main body, and the lid body is inserted into the engaging hole formed in the flange portion of the container main body at the end face of the fitting edge portion that is vertically provided on the peripheral edge of the top plate portion, and is locked. After the locking piece is formed to be rupturable, the container body is covered with the lid, and the rupturable locking piece is inserted into the engagement hole and locked. , It constitutes a sealed container so as to prevent tampering.

Further, the airtight container of the present invention formed as described above is formed so that the locking piece can be easily cut so that the opening operation of the lid can be easily performed, so that it can be used for children, the elderly and the like. The lid can be opened easily with a small amount of force in a short time, and the opening of the opened container is cut so that no trace of the cut tamper-evident piece remains. Then, even if the opened container is covered with the lid again to be hermetically sealed, there is no fear of becoming unsanitary, and the hermetically sealed container has a high hermeticity.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The closed container provided with the tamper-proof function of the present invention is injection-molded using a thermoplastic synthetic resin to be formed into a box-shaped section having a substantially square cross section capable of containing contents. It is formed of a container body 8 and a lid body 3 which is formed so as to be fitted into the opening portion 4 of the container body so as to be fittable. In the container body 8, the engaging projection 11 for engaging the lid body 3 with the peripheral surface of the box-shaped upper end opening 4 and the collar portion 5 with which the lid body 3 abuts.
Is formed, and an engaging hole 6 for locking the locking piece 2 provided on the lid body 3 is formed in the collar portion so that the lid body can be attached and sealed. Further, the lid body 3 is formed so that the fitting edge portion 3b is provided with a locking piece 2 which is formed so as to be locked in the engagement hole 6 of the collar portion 5 of the container body 8 and can be easily broken. ing.

After the contents are accommodated in the container body 8 formed as described above, the lid body 3 is attached to the opening end of the container body and then pressed to fit the fitting edge portion of the lid body. When the substantially V-shaped locking piece 2 provided in 3b is press-fitted into the engagement hole 6 of the flange portion 5 of the container body, the tip of the V-shaped locking piece 2 contacts the lower surface of the flange portion. In contact with each other, the lid body 3 is brought into close contact with the container body to be hermetically sealed, and the contents are accommodated to form the hermetically sealed container 1 for preventing unauthorized opening. In the closed container 1 formed in this way, the contents cannot be taken out and used unless the locking piece 2 that also serves to prevent unauthorized opening is broken. Simultaneously with pushing up and opening, the locking piece 2 is broken and falls, and the lid 3 of the closed container is opened so that the contents can be used.

[0019]

[Embodiment] The following is a description of an optimum embodiment of an airtight container having an unauthorized opening prevention function according to the present invention,
A detailed description will be given with reference to the drawings. As shown in FIGS. 1 and 2, the closed container 1 having the tamper-proof function of the present invention accommodates food such as margarine and butter and various other contents by injection molding of thermoplastic synthetic resin. A container body 8 formed in a box shape suitable for the above, and a lid body 3 formed so as to be hermetically sealed by being attached to the container body and fitted therein.

Then, the container body 8 is formed by injection molding a thermoplastic synthetic resin applicable to a container such as a food, and is formed into a box shape having rounded four corners as shown in FIG. At the same time, a plurality of engaging projections 11 are formed in the circumferential direction on the outer peripheral surface of the fitting wall 4a into which the lid 3 of the box-shaped upper end opening 4 is fitted so that the lid does not come off. Further, a flange 5 is formed around the lower end of the fitting wall around which the tip of the lid 3 abuts, and the flange 5 is formed so that the lid 3 can be broken. A plurality of engagement holes 6 for locking the locked locking pieces 2 are formed, and a lid 3 is attached to form a hermetically sealed structure. Further, the lid body 3 is vertically installed on a top plate portion 3a formed in a substantially rectangular shape with rounded corners so that the lid body 3 can be fitted into a fitting wall 4a of an upper end opening portion 4 of a container body 8. A plurality of engaging pieces 2 that are inserted into the engaging holes 6 provided in the flange 5 and engage with each other are provided on the formed fitting edge portion 3b so that they can be easily broken.

Collar 5 of container body 8 formed as described above
Is provided over the entire circumference of the upper end opening of the container body having a substantially rectangular box shape, and the flange portion extending along the two short sides of the substantially rectangular shape is larger than the flange portions extending along the two long sides. And a plurality of engaging holes 6 for engaging the locking pieces 2 are formed in the wide portion of the collar portion. The collar portion 5 formed as described above has a function of a reinforcing rib that strengthens the body wall of the container body 8, and the wide portion of the collar portion serves as a grip portion when holding the closed container 1 in the hand. It also has a function.

The engagement holes 6 (a pair in FIG. 2) formed in the collar portion 5 of the container body 8 as described above are opened in a substantially rectangular shape along the extension direction of the short side, and As shown in FIGS. 2 and 3, a protective wall 7 that protects the locking piece 2 from being damaged is provided in a cylindrical shape on the outer peripheral portion of the back surface of the fitting hole 6. Also, the locking piece 2 provided on the lid body 3
As shown in FIG. 3 (a), is a base portion 2a protruding from the tip of the fitting edge portion 3b of the lid, a vertical leg portion 2b extending from both ends of the base portion 2a, and the vertical leg portion. It is formed of a retaining piece 2c extending in a V shape from the tip of 2b, and a breaking portion is provided on the base 2a so that the locking piece 2 can be easily broken, and the engaging hole is formed. 6 is formed so that it can be inserted therethrough.

The closed container having the tamper-proof function of the present invention, which comprises the container body and the lid having the above-mentioned structure, is filled with jam, butter and other contents from the upper end opening 4 of the container body 8. After being stored, the surface of the contents is covered with a thin protective film or the like if necessary, and then the lid body 3 is placed on the upper end opening 4 of the container body 8 as shown by the arrow in FIG. As shown in FIG. 1, when it is put on and the lid is pressed to closely fit and fit the fitting wall 4a, the locking piece 2 of the lid 3 is inserted into the engaging hole 6 of the collar portion 5 and shown in FIG. As described above, the engaging protrusions 11 of the container body 8 are engaged with the engaging portions provided on the inner surface of the fitting edge portion 3b of the lid body 3 so that the lid body 3 does not easily come off from the container body 8. Fitted and fixed.

In order to fit and fix the lid 3 to the container body 8 as described above, as shown in FIG.
When the locking piece 2 protrudingly provided at the tip of the fitting edge portion 3b of the above is press-fitted into the engaging hole 6 provided in the collar portion 5 of the container body 8, the locking piece 2 projects at the fitting edge portion 3b of the lid body 3. The locking piece 2 provided is shown in FIG.
As shown in (b), the engaging piece 2 is inserted so as to be squeezed at the edge of the engaging hole 6 by the pressing force, but the engaging piece 2 is a thin leg 2b standing upright from the base 2a formed in an arc shape. Since the retaining piece 2c formed so as to be elastically deformed is provided at the distal end of the engaging hole 6, the engaging hole 6 is easily deformed by bending so as to sufficiently absorb the stress acting on the locking piece 2. Can pass In this way, the locking piece 2 that has been able to completely pass through the engagement hole 6 is restored so that the retaining piece 2c expands to its original shape by the restoring force as shown in FIG. The tip portion of the stopper piece 2c is locked and fixed to the lower surface of the collar portion 5.

As described above, the lid body 3 is sealed in the container body 8 in which the contents are accommodated as shown in FIG. 1, and the locking piece 2 is locked in the engaging hole 6 of the collar portion 5. Then, the closed container 1 in which the lid cannot be opened is packaged and shipped as a product, and is displayed at a retail store through various distribution processes.
By the way, at a distribution stage, in a store, etc., an unconscious person picks up the closed container 1 of the present invention and holds the engagement relationship between the engaging portion of the lid 3 and the engaging protrusion 11 of the container body 8. Even when the lid 3 is released by opening the lid 3, the locking piece 2 provided on the lid 3 is locked in the engaging hole 6 of the collar portion 5 of the container body 8 so as not to come off, The lid 3 cannot be opened.

Therefore, if the lid 3 is forcibly opened, the retaining piece 2c of the locking piece 2 penetrating the engaging hole 6 hits the back surface of the collar portion 5 and receives resistance, so that as shown in FIG. The locking piece 2 is broken at the breaking portion 9 provided at the base, and separated from the fitting edge portion 3b of the lid body 3 and falls. Therefore, in the container in which the inexperienced person illegally opened the lid body 3 and tried to play a trick in this manner, the locking piece 2 was cut from the fitting edge portion 3b of the lid body 3, and the closed container 1 Since the cut mark of the locking piece is seen on the lid body 3, a store clerk, a consumer, or the like can clearly determine at a glance whether or not there is a fact that the tampering has been made.

In the above-described embodiment, the breakable locking piece of the present invention is applied to the closed container in which the container main body and the lid are formed as separate bodies to provide the function of preventing unauthorized opening. Although the closed container is configured, the invention of the present application is not limited to such a configuration, and a breakable locking piece is provided in the closed container integrally formed with the container body and the lid. It is also possible to use a closed container having a tamper-proof function. For example, as shown in FIG. 5 as an example, the closed container 1 can be formed by connecting the lid body 3 to one side of the upper end opening of the container body 8 so as to be openable and closable via the hinge portion 12.

The lid 3 of the closed container 1 has a hinge portion 1
2 is openably and closably connected to the upper end opening of the container main body 8 via the locking member 2 and is provided on the fitting edge 3b on the side opposite to the hinge portion 12 and on the inner surface of the fitting edge 3b. An engaging portion 13 that engages with the engaging rib 11 of the container body 8 is provided to form an airtight container having an unauthorized opening preventing function. The closed container thus formed is filled with contents from the upper end opening of the container body 8 and then the lid 3 connected to the upper end of the container body 8 is closed to the opening to fit the lid. When pressed so as to be brought into close contact with the mating wall 4a, the engaging projections 11 of the container body 8 are engaged with the engaging portions 13 provided on the inner surface of the fitting edge portion 3b of the lid body 3 and shown in FIG. Similar to the embodiment, the locking piece 2 of the lid body 3 is inserted into the engagement hole 6 of the collar portion 5, and the lid body 3 is fitted and fixed so as not to be easily removed from the container body 8.

The closed container with the opening preventing function in which the lid body 3 is hingedly connected to the container body 8 as described above is the same as the case of the embodiment shown in FIG. 4 when the lid body 3 is opened. As described above, the locking piece 2 formed so as to be rupturable is cut and opened, but the lid body 3 is hinged to the container body 8 by the hinge portion 12.
Therefore, the opened lid body 3 does not drop on the floor or the like and the lid body does not go missing.

Further, in the closed container 1 of the present invention having the above-mentioned function for preventing unauthorized opening, the fitting edge portion 3 of the lid body 3 is used.
Although the structure in which the locking piece 2 is provided downward on b has been described, the present invention, contrary to the case of the above-described embodiment, has a substantially inverted V-shaped locking piece that is elastically deformable on the container body 8 side. It is also possible to provide a closed container in which the lid 2 is provided and the engaging hole 6 is provided on the lid 3 side to be engaged.

Then, the breakable locking piece 2 provided on the fitting edge portion 3b of the lid body 3 is press-fitted into the flange portion 5 formed on the peripheral portion of the upper end opening of the container body 8 described above. The closed container 1 provided with the hole 6 has a structure in which when the lid is closed with respect to the container body, the locking piece 2 passes through the locking hole 6 of the collar portion 5 in a state where the tip is squeezed, and The tip of the stop piece 2 spreads out as before, and its end is locked to the back surface of the collar 5. In this manner, the closed container 1 having the function of preventing unauthorized opening in which the locking piece 2 is broken when the lid 3 is opened is formed by separately forming the lid and the container body. In the case of the above, since the structure of the molding die for molding the lid 3 and the container body 8 can be simplified, the manufacturing of the molding die becomes easy.

The closed container according to the present invention is provided with a cylindrical protective wall 7 so as to surround the periphery of the locking piece 2 which is passed through the engaging hole 6 of the flange and is locked to the back surface of the flange 5. Since the locking piece is not exposed, the broken piece 2 is hidden so as not to be touched by human eyes, and at the same time, the locking piece 2 is pinched with a fingertip and pulled out from the engaging hole 6 to remove the lid 3 It is also possible to prevent the lock piece from being opened illegally, and the locking piece 2 that is broken when the lid 3 is opened is dropped directly below. The protective wall 7 may be formed with an open portion, which is partially notched.

Therefore, even if the inexperienced person knows that the locking piece 2 is provided on the closed container 1,
Since the locking piece 2 is covered with the protective wall 7, the locking piece 2 cannot be thinned with a fingertip and pulled out from the engagement hole 6 of the container body 8. Further, in a conventional container having a fraud prevention structure and containing butter and other foods, an outer wrapping material such as a paper box or a film is further used, but in the container of the present invention. In addition, packaging using such an outer packaging material is unnecessary, which leads to resource saving.

On the outer peripheral surface of the fitting wall 4a of the opening 4 of the container body 8 described above, an engaging projection engaging with the engaging portion 13 provided on the fitting edge 3b of the lid 3 is provided. 11 are provided at the four corners so that the lid body 3 cannot be easily removed from the container body 8. However, in order to open the lid body of the closed container formed as described above, the lid body 3 is simply used. It is not necessary to perform any other operation (operation of cutting along the cutting line) because the locking piece 2 is broken and falls and the lid is opened only by performing the operation of opening.

[0035]

As described above, in the closed container having the function of preventing tampering according to the present invention, since the locking piece is broken at the same time when the lid is opened, the tampering is prevented like the conventional closed container. It is possible to eliminate the trouble of performing a separate operation of opening the lid after performing the operation of breaking the functional portion, and it is possible to easily open the package in a short time. Further, according to the hermetically sealed container provided with the tamper evident prevention function of the present invention, the tampering prevention of the container is prevented by the locking pieces partially provided at one place or a plurality of places at the connecting portion between the lid body and the container body. The function can be exhibited, and it is not necessary to tear the entire circumference of the joint portion between the lid body and the container main body when opening, and thus the opening can be easily performed.

Furthermore, in the closed container having the tamper-proof function as in the present invention, no special cut line or knob is required unlike the conventional closed container having the tamper-proof function. In addition, the manufacturing cost can be reduced, and since there is no protrusion that interferes with the opening of the opened container, it is highly hygienic when the lid is closed again. The flange portion 5 of the container body 8 is provided over the entire circumference of the container body 8 and functions as a reinforcing rib of the container body 8. At the same time, portions extending along the two short sides of the substantially rectangular container body 8 are It is formed wider than the portion extending along the two long sides, and the two short sides of the wide side function as a knob when holding the closed container 1 in the hand.

[Brief description of drawings]

FIG. 1 is a perspective view showing a closed state of a lid of an airtight container having an unauthorized opening preventing function of the present invention.

FIG. 2 is a perspective view showing a state in which a lid is fitted to the closed container of the present invention shown in FIG.

FIG. 3 is an enlarged view of an engaging portion of a locking piece showing a sealing process of fitting a lid into a closed container as shown in FIG.

FIG. 4 is a perspective view showing a state in which the closed container shown in FIG. 1 is opened.

FIG. 5 is a perspective view showing another embodiment of the closed container having the tamper-proof function of the present invention.

FIG. 6 is a perspective view showing a conventional closed container having a function of preventing unauthorized opening.

FIG. 7 is a half cross-sectional view showing a lid portion of the closed container shown in FIG.

8 is a cross-sectional view showing a broken portion of the closed container shown in FIG.

FIG. 9 is a perspective view showing a lid body and a container body of a prior example of the present invention.

FIG. 10 is a perspective view (a) showing a closed container of a prior example of the present invention and a partial sectional view (b) showing a locking portion.

[Explanation of symbols]

1. Closed container 2. Locking piece 2a. base 2b Vertical leg 2c retaining piece 3. Lid 3a. Top plate 3b. Mating edge 4. Top opening 4a. Mating wall 5. Tsubabe 6. Engagement hole 8. Container body

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobuo Yamanaka             Stock exchange, 3-2-6 Oshima, Koto-ku, Tokyo             Inside the company Yoshino Industry F-term (reference) 3E084 AA05 AA14 AA24 AB06 BA01                       CA03 CC03 DA03 DB13 DC03                       FA09 FC13 GB08 GB12 KA12                       LA01 LB02 LB09

Claims (6)

[Claims] 1. A box-shaped container body capable of accommodating contents is provided with a flange portion that is in close contact with a fitting wall with which the lid body is fitted, and the collar portion is provided on the lid body. In the container body in which the lid is formed so that the lid can be fitted and sealed, the end face of the fitting edge that is hung on the peripheral edge of the top plate of the lid is formed. The locking piece that locks in the engagement hole formed in the flange portion of the container body is fitted with a lid that is formed so as to be rupturable, and the locking piece is inserted into the engagement hole, and the flange portion is formed. An airtight container having a function for preventing unauthorized opening, wherein the locking piece is formed so that it can be broken when the lid is opened. 2. A box-shaped container body capable of accommodating contents is provided with a flange portion that is in close contact with a fitting wall with which the lid body is fitted, and the lid body is engaged with the fitting wall. The lid body is provided with an engaging projection for fitting and an engaging hole for locking the locking piece provided on the lid body, so that the lid body can be fitted and sealed. An engaging portion with which the engaging protrusion engages is formed on an inner surface of a fitting edge portion that is vertically provided on a peripheral edge of the plate portion, and an engagement hole formed in a flange portion of the container body on an end surface of the fitting edge portion. A lid body having a rupturable locking piece for locking is engaged with the locking piece, the locking piece is inserted into the engaging hole and locked on the back surface of the flange portion, and when the lid is opened, the engaging piece is engaged. An airtight container having a tamper-proof function, characterized in that a stopper is formed so as to be rupturable. 3. The lid body is formed separately from the container body, and is formed so as to be openably and closably fitted into an opening of the container body.
A closed container equipped with the tamper-proof function described in. 4. The lid body is engageable with an upper end of the container body, is formed to be connected to the container body via a hinge portion, and can be opened and closed in an opening of the container body. The sealed container having the tamper-proof function according to claim 1 or 2, which is formed so as to be fitted. 5. The engagement piece comprises an elastic engagement portion extending in a V shape at the tip of a vertical leg portion that hangs at both ends of a base portion protruding from the fitting edge portion of the lid, and the engagement hole. The sealed container having a tamper-proof function according to claim 1 or 2, wherein the base is provided with a breakable portion that can be easily broken. 6. The tubular protection wall which opens the engagement hole in a substantially rectangular shape along the length direction of the wide collar portion and protects the locking piece on the outer peripheral portion of the opening on the rear surface of the collar portion. The sealed container having the tamper-proof function according to claim 1, wherein the sealed container is provided.