JP2012214242A - Tamper-evident cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tamper-evident cap which permits a fraud to be confirmed by a sealing member separably continuously provided in a hinged cap, separably therefrom, prevents the sealing member from catching each other even when a large number of the sealing members are carried in a single box, and can be easily fractionated and disposed of.SOLUTION: In the hinged cap made up of a cap body and a lid body, the cap body has the sealing member continuously provided to form an insertion hole in the perimeter of the peripheral wall with a space interposing in-between. The peripheral wall is provided with a cut portion in the vertical direction and a slit groove in an arc range between the peripheral wall and a lid engagement portion. A thin-walled connecting portion connecting the peripheral wall and the lid engagement portion is provided on the bottom surface of the slit groove. The sealing member includes a sealing portion and an inclined connecting portion heading for the outside periphery of the peripheral wall from both side ends of the sealing portion. The sealing portion is provided with a sealing protrusion protruded upward at the upper end. The peripheral wall of the lid body is provided with sealing ribs inserted into the insertion hole of the peripheral wall of the cap body and engaging with the sealing members in the lower part of the perimeter.

Description

  The present invention relates to a hinge cap, and particularly to a tamper-proof cap having a mechanism for preventing unauthorized opening.

  In various containers with a hinge cap that can be freely opened and closed on the mouth tube of the container body that contains fluid contents such as liquid or powder, these contents can be illegally removed or refilled. It is necessary to prevent unauthorized opening so that no harmful substances are mixed into the contents.

  Therefore, the sealing member is connected to the lid of the hinge cap or the cap body so that the sealing member can be separated, and when the unsealed state, the sealing member is engaged with the cap body or the lid body to maintain the closed state, and whether the sealing member is present. A tamper-proof cap that can visually confirm the unsealed state is known from the past (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 4-35553

  The hinge cap described in Patent Document 1 is provided with a pressing piece (4) on the opposite side of the hinge (3) of the lid (2), and corresponds to a sealing member via a thin part (6) on the cap body (1). The engagement piece (7) to be attached is attached.

  In the hinge cap described in Patent Document 1, the engagement pieces (7) are placed inside each other when a large number of caps are put in a single box or the like in the production process of the container. Intruding, biting, and pulling, the thin portion (6) is cut, and the engaging piece (7) is disengaged from the cap body (1).

  Recently, the hinge cap is often attached to the container body filled with the contents, and the contents are used as a container and then discarded. In the hinge cap described in Patent Document 1, the cap is often used. When the cap and the container main body are separated and discarded, there is a problem that separation is not easy.

An object of the present invention is to solve the above-mentioned problems, and by using a sealing member connected to a hinge cap so as to be separable, fraud can be confirmed and the closed state can be more firmly maintained. Even when a large number of unsealed containers are put in a single box or the like and transported, the sealing members are prevented from being bitten together so that the sealing members do not easily come off the cap body.
Furthermore, after mounting the hinge cap on the container body and using the contents as the container, it is not necessary to separate and dispose of the cap and the container body, and the structure is simple and the fraud prevention cap is provided at a low cost. With the goal.

  In order to solve the above-described problems, the present invention provides a hinge cap including a cap body mounted on a mouth tube portion of a container body as a fraud prevention cap, and a lid body connected to the cap body so as to be opened and closed by a hinge. The cap body includes a dispensing cylinder, a lid engaging portion that engages with the lid, an outer peripheral wall portion that is connected to the outer edge of the lid engaging portion, and a hinge at the upper end, and an opposite side of the hinge. An arcuate sealing member that is continuously provided so as to form an arcuate wide insertion opening spaced from the outer periphery of the outer peripheral wall, and the outer peripheral wall is vertically cut in the vicinity of the hinge A slit groove having an opening upward is provided between the outer peripheral wall portion and the lid engaging portion on both sides of the cut portion over an arc range having a predetermined circumferential angle. An end surface on the hinge side formed in a substantially radial direction, and the end An end face that is inclined so as to spread toward the outer periphery is formed on the opposite side of the hinge slightly away from the circumferential direction, and a thin outer peripheral wall is formed on the outer peripheral wall portion between the end face and the end face. A breakable upper thin portion is formed between the end surface of the slit and the slit groove, and a connecting portion is formed between the end surface and the slit groove to connect the outer peripheral wall portion and the lid engaging portion. Is provided with a thin breakable connecting portion that connects the outer peripheral wall portion and the lid engaging portion, and the sealing member is formed in an arc shape extending from the center portion on the opposite side of the hinge to both sides, and has a wide sealing portion. And an inclined connecting portion that extends from both side ends of the sealing portion toward the outer periphery of the outer peripheral wall portion. The sealing portion includes a locking notch cut from both sides of the lower end and a center from both sides of the upper end. Sealing projections projecting upward toward the vicinity of the part, and inclined connecting parts on both sides are provided The lid is connected to the outer periphery of the outer peripheral wall portion via a breakable weakening portion, and the lid body has a top wall, an outer peripheral wall provided with a hinge at a predetermined position, and an outer peripheral lower portion on the opposite side of the outer peripheral wall hinge. A sealing rib that is inserted into the insertion port of the outer peripheral wall portion of the cap body when closed and is engaged with the sealing portion of the sealing member is provided, and the outer peripheral wall has a finger hook on the outer periphery opposite to the hinge. A concave portion is provided, and a locking projection that engages with a locking notch of the sealing portion of the cap body when the lid is closed is provided at the lower end of the outer surface of the sealing rib. Adopt the configuration.

  As an example of the sealing rib, the outer surface upper part of the sealing rib is formed with a curved surface that is continuous from the lower outer surface of the finger-hanging recess, or both side surfaces of the sealing rib are A configuration is adopted in which an inclined side surface is formed from the lower end of the flat side surface so as to engage with the inclined inner surface of each inclined connecting portion of the sealing member of the cap body when the lid is closed.

  The tamper-proof cap of the present invention is a hinge cap, wherein the cap body includes a pouring tube, an outer peripheral wall portion, a lid engaging portion, an outer peripheral wall portion connecting a hinge to the upper end of the outer periphery, and an outer periphery of the outer peripheral wall. A sealing rib provided on the lid in the insertion port at the time of the first lid closing, having a wide arc-shaped sealing member continuously arranged so as to form an arc-shaped wide insertion port at an interval Is inserted and engaged, the unopened closed state can be maintained more firmly.

  In addition, the sealing protrusion formed in the arc shape on the sealing member covers the finger-hanging recess provided on the lid, the gap between the sealing member and the sealing rib is reduced, the cap is unopened, a single box, etc. Even when a large number of the sealing members are transported, the sealing members can be prevented from being bitten from above or from the side, and the sealing members can be prevented from being easily detached from the cap body.

  Further, when opening the lid, the weakened portion connecting the sealing member and the outer peripheral wall is broken and the sealing member is removed, so that the lid can be opened. The presence or absence of can be confirmed.

  Furthermore, when the cap and container body are separated and discarded after using the contents in the container, the cap body can be torn with a small amount of force and removed from the container body. can do.

It is explanatory drawing of the cap of this invention, (a) is a top view at the time of lid opening, (b) is a cross-sectional side view at the time of lid closure. It is a perspective view of a cap. It is explanatory drawing of a cap, (a) is a partial cross section front view of a cover body, (b) is a partial cross section front view of a cap main body. It is explanatory drawing of a cap main body, (a) is a top view, (b) is a principal part enlarged view of (a), (c) is a side view. It is a principal part sectional enlarged view of a cap, (a) is a principal part expanded sectional view of hinge vicinity, (b) is a principal part expanded sectional view in the 0-A cross section of Fig.4 (a). It is explanatory drawing of a cover body, (a) is a bottom view, (b) is a side view. It is action | operation explanatory drawing of the sealing member of a cap main body. It is a perspective view at the time of sealing member removal. It is a top view which shows the process of tearing and breaking the cap of this invention.

Next, the tamper-proof cap of the present invention that is mounted on the mouth tube portion of the container body will be described with reference to the drawings.
In FIGS. 1 and 2, A is a cap body attached to the mouth tube portion of the container body, and B is a lid body attached to the cap body A through a hinge C so as to be opened and closed.

  As shown in FIGS. 1 to 4, the cap main body A includes a pouring cylinder 1, a ring-shaped lid engaging portion 2 that is connected to the lower outer periphery of the pouring cylinder 1, and engages the lid body B, and a lid. The inner cylinder 3 suspended from the lower surface of the inner edge of the engaging portion 2, the outer peripheral wall portion 4 connected to the outer edge of the lid engaging portion 2, and the hinge C connected to the upper end of the outer periphery, The outer wall 4 is formed at a height that covers the outer periphery from the vicinity of the upper end to the vicinity of the lower end, and is continuously provided so as to form an arcuate wide insertion port a spaced from the outer periphery of the outer peripheral wall 4. And a wide arc-shaped sealing member 5.

  A partition wall 6 is provided at the lower part of the inner periphery of the dispensing tube 1, and a removal portion that forms a spout from which the partition liquid 6 is removed when it is unplugged by a pull ring 7 through a support column. 8 is formed.

An engaging protrusion 10 that engages with the outer periphery of the mouth tube portion of the container main body is provided at the inner peripheral lower portion of the outer peripheral wall portion 4.
The cap body A sandwiches the mouth tube portion of the container body by the outer periphery of the inner cylinder 3 and the inner periphery of the outer wall portion 4, and the engaging protrusion 10 of the outer wall portion 4 is engaged with the outer periphery of the mouth tube portion. Furthermore, the lower surface of the lid engaging portion 2 is attached to the container body by contacting the upper surface of the mouth tube portion.

As shown in FIGS. 1, 4, 5 (b), a substantially V-shaped outer peripheral notch 11 in a plan view is formed on the outer peripheral wall near the left or right of the hinge C of the outer peripheral wall 4. The bottom wall 12 is left and cut from above.
At the position corresponding to the outer peripheral notch 11 of the engaging protrusion 10, an inner peripheral notch 13 is carved in the vertical direction.

The outer peripheral cut portion 11 has a hinge-side end surface 11a formed substantially radially on the hinge C side, and a terminal end inclined so as to spread toward the outer periphery on the side opposite to the hinge C slightly separated from the end surface 11a in the circumferential direction. The surface 11b is formed.
Further, a thin outer peripheral wall 14 is formed between the end surface 11a and the end surface 11b in the outer peripheral wall portion 4 having a slight width in the circumferential direction.

  The thin-walled bottom wall 12 serves to reinforce the thin-walled outer peripheral wall 14 so that the thin-walled outer peripheral wall 14 of the outer peripheral wall 4 is not broken when a large force is applied to the cap such as when plugging, and the thin-walled outer peripheral wall 14 is torn with a small force. In addition to preventing breakage.

As shown in FIGS. 1, 4, 5 (a), on the hinge C side of the outer periphery cut-out portion 11, it extends in the circumferential direction starting from a position separating the upper thin portion 15 on the inner periphery side of the end surface 11 a, A slit groove 16 is recessed from above and extends to the vicinity of the opposite end surface 11b.
On the end surface 11b on the opposite side of the hinge C, an end connection portion 17 that firmly connects the lid engaging portion 2 and the outer peripheral wall portion 4 is formed.

  A vertical tear line is formed by the upper thin portion 15 and the lower portion of the thin outer peripheral wall 14 extending from the lower end portion of the upper thin portion 15.

  As shown in FIGS. 1 and 3 to 5, an outer peripheral wall portion is formed on the inner peripheral side of the bottom surface 18 of the slit groove 16 with the starting point of the slit groove 16 adjacent to the upper thin portion 15 of the vertical tear line as a tear start point. 4 and the lid engaging portion 2 are provided with a thin connecting portion 19, and the circumferential tear line extends in an arc shape.

  The connecting portion 19 is a weakly connected portion 19a having a very thin wall or a cut in a certain range from the tear start point of the circumferential tear line, and a transition connection of a predetermined range in which the wall thickness changes from the end of the weakened connecting portion 19a. After passing through the portion 19b, it becomes a steady connection portion 19c that is thicker than the weakened connection portion 19a and that can be broken, and is a steady connection portion 19c. The weakening connection portion 19a, the transition connection portion 19b, and the steady connection portion 19c cause a circumferential tear line. Is formed and connected to the longitudinal tear line.

1-4, the sealing member 5 is spaced apart from the outer periphery of the outer peripheral wall part 4 and extends from the center part on the opposite side of the hinge C to both sides, and has a wide sealing part formed in an arc shape. 20 and an inclined connecting portion 21 that extends from both side ends of the sealing portion 20 toward the outer periphery of the outer peripheral wall portion 4.
Both inclined connecting portions 21 are inclined so as to form an inverted letter C when viewed from the opposite side of the hinge C, with the upper end side being wide and the lower end side being narrow, and toward the outer peripheral wall 4 side, The opposite end of the sealing portion 20 is connected to the outer periphery of the outer peripheral wall portion 4 via a weakened portion 22 that can be broken.

  The sealing part 20 has a locking notch 23 cut into the lower part from both sides of the lower end and formed with a flat locking lower surface 23a in the vicinity of the central part, and protrudes upward from both sides to the central part. And a sealing protrusion 24 formed in an arc shape together with the sealing portion 20.

  As shown in FIGS. 1 to 3 and 6, the lid B is provided with a top wall 25, an outer peripheral wall 26 that is suspended from the outer peripheral edge of the top wall 25, and a hinge C is continuously provided at a predetermined position on the lower outer periphery. The outer peripheral wall 26 is connected to the lower outer periphery on the opposite side of the hinge C, and is inserted into the insertion port a of the outer peripheral wall 4 of the cap body A when the lid is closed, and engages with the sealing portion 20 of the sealing member 5. An arc-shaped sealing rib 27 formed at a height is provided.

  On the lower surface of the top wall 25, a sealing cylinder 28 whose outer periphery engages with the inner periphery of the extraction cylinder 1 of the cap main body A when the lid is closed is suspended.

The outer peripheral wall 26 is provided with an engaging portion 30 at the lower inner periphery that engages with the upper outer periphery of the lid engaging portion 2 of the cap body A when the lid is closed and maintains the closed state.
On the opposite side of the outer wall 26 from the hinge C, a finger hook recess 31 having an appropriate shape is formed on the outer periphery so that the fingertip is hooked when the lid is opened, and the lower end surface is inserted into the slit groove 16 of the outer wall 4. An arcuate protrusion 32 is vertically provided.
The sealing protrusion 24 of the sealing part 20 of the sealing member 5 of the cap body A is formed so as to cover the finger-hanging recess 31.

  The upper surface of the sealing rib 27 is connected to the lower portion of the outer peripheral wall 26, the upper surface of the outer surface is formed with a curved surface 27 a continuous from the lower portion of the outer surface of the finger hanging recess 31, and both side surfaces are connected to the upper flat side surface 27 b. An inclined side surface 27c is formed from the lower end of the flat side surface 27b so as to engage with the inclined inner surface of each inclined connecting portion 21 of the sealing member 5 of the cap body A when the lid is closed.

  The lower end of the outer surface of the sealing rib 27 is provided with a locking projection 33 whose upper portion engages with the locking notch 23 of the sealing portion 20 of the cap body A when the lid is closed. An upper surface 33a that engages with the lower surface 23a of the locking notch 23 is formed at the upper portion, and an inclined surface 33b is formed at the lower portion.

Next, the effect of the cap of this invention is demonstrated.
In the production process of the container, first, a cap is produced, and the lid B is closed on the cap body A.

  When the cap is closed for the first time, the inclined surface 33b of the locking projection 33 of the sealing rib 27 of the lid B comes into contact with the inner surface of the sealing portion 20 of the sealing member 5 of the cap body A, and the sealing member 5 is slightly The sealing rib 27 is inserted into the insertion port a of the outer peripheral wall portion 4 of the cap body A while being deformed.

Finally, the locking protrusion 33 of the sealing rib 27 is inserted into the locking notch 23 of the sealing member 5 so that the deformation of the sealing member 5 is released, and the inner surface and both sides of the sealing portion 20 of the sealing member 5 are released. The inclined connecting portion 21 is in contact with the outer surface of the sealing rib 27 and the inclined side surfaces 27c of both side surfaces, and the sealing rib 27 is fitted into the insertion port a.
Moreover, the upper outer periphery of the lid engaging portion 2 of the cap body A and the inner periphery of the engaging portion 30 of the lid B are engaged, and the lid is closed as an unopened state.

  Before the cap is attached to the container main body or after the cap is attached to the container main body, the cap engaging portion 2 of the cap main body A and the engaging portion 30 of the cap B are engaged in the unopened state of the cap. In addition, the locking protrusion 33 of the sealing rib 27 is inserted into the locking notch 23 of the sealing member 5, and the upper surface 33 a of the locking protrusion 33 of the sealing rib 27 is of the locking notch 23 of the sealing member 5. By engaging the locking lower surface 23a, the closed state can be maintained more firmly.

  Even if the lid is forcibly opened from the unopened state, the upper surface 26a of the locking projection 33 of the sealing rib 27 is engaged with the locking lower surface 23a of the locking notch 23 of the sealing member 5, and the sealing rib Since the outer surface of 27 and the inner surface of the sealing member 5 are in contact with each other and become a resistance, the lid cannot be easily opened.

  In the unopened state, the sealing projection 24 of the sealing part 20 of the sealing member 5 of the cap body A covers the finger-hanging recess 31 of the outer peripheral wall 26 of the lid B. It cannot be hung on the recess 31 and can be prevented from opening.

In the production process of a container, before attaching a cap to a container main body, many caps are put in a single box or the like in an unopened state for transportation.
At that time, in the cap of the present invention, since the sealing protrusions 24 of the sealing member 5 of the cap body A are formed in an arc shape, the sealing protrusions 24 of a large number of caps inserted as shown in FIG. In addition, it is possible to prevent the sealing member 5 from being removed from the outer peripheral wall portion 4 by entering, biting, and pulling into each other.

  Further, the portion of the inclined side surface 27c of the sealing rib 27 of the lid B is inserted into the insertion port a of the sealing member 5 of the cap body A to close the insertion port a, and the unsealed sealing member 5 and the sealing rib 27 are closed. The flat side surface 27b of the sealing rib 27 and a portion in the vicinity of the sealing rib 27 protrude upward from the insertion port a of the cap body A.

Since the side surface of the sealing rib 27 is a flat flat side surface 27b, the sealing protrusions 17 and other portions of other caps inserted therein are more sealed ribs than those in which the end of the side surface of the sealing rib 27 is curved. 27 is widened, the flat side surface 27b of the sealing rib 27 protruding upward from the insertion port a of the cap body A and a portion in the vicinity thereof are inward of the sealing protrusion 24 and another cap. It is possible to prevent the sealing protrusion 24 and other parts from entering.
Further, the gap between the inner side surface of the sealing member 5 and the portion of the sealing rib 27 protruding above the insertion opening a of the cap main body A can be made smaller than that in which the end of the side surface of the sealing rib 27 is curved. Therefore, it is possible to prevent the sealing protrusions 24 and other parts of the other caps that have been inserted from entering the inside of the sealing member 5 from entering the inside of the sealing member 5 through the gaps on the side, and biting and pulling. .

  Next, the closed cap is attached to the mouth tube portion of the container body filled with the contents by a stopper or the like to obtain a container with the cap closed.

  In order to use the contents in the container of the present invention, when the cap is first opened, first, on the left or right side from the central portion of the upper portion of the sealing projection 24 of the sealing member 5 of the cap body A. Hang your finger and pull it forward.

  By pulling either the left or right side of the upper part of the sealing protrusion 24 of the sealing member 5, the sealing part 20 and the inclined connecting part 21 of the sealing member 5 on that side are pulled, and the weakening part 22 on that side is cut from above. Finally, as shown in FIG. 8, the inclined connecting portion 21 on that side is completely separated from the outer peripheral wall portion 4.

  In the sealing member 5 and the outer peripheral wall portion 4 of the cap body A of the present invention, the inclined connecting portion 21 and the weakening portion 22 on both sides are inclined with respect to the outer peripheral wall portion 4 so that the upper portion faces the lower portion and the central portion side. Thus, compared to the case without an inclination, the resistance of the weakened portion 22 is cut from the upper side to the lower side, and it is not cut unless a certain amount of force is applied.

  Further, since the sealing member 5 is connected to the outer peripheral wall portion 4 in a slanted C shape when viewed from the opposite side of the hinge C via the weakened portions 22 on both sides, the sealing member Even if the center part of 5 is pulled, it becomes resistance, and unless it is pulled too strongly, the weakened part 22 cannot be cut and the sealing member 5 cannot be removed from the outer peripheral wall part 4.

  When one of the left and right inclined connecting portions 21 is cut off, the sealing member 5 is further pulled, the reverse weakening portion 22 is cut, the inclined connecting portion 21 is cut off from the outer peripheral wall portion 4, and the sealing member 5 is removed from the cap body A. Remove.

  After either of the left and right inclined connecting portions 21 is cut off or after the sealing member 5 is removed from the cap body A, the engagement between the sealing rib 27 of the lid B and the sealing member 5 is released, and the cap body The closed state is maintained by the engagement of the lid engaging portion 2 of A and the engaging portion 30 of the lid B.

Next, a finger is put on the finger-hanging recess 31 of the outer peripheral wall 26 of the lid B, the lid B is pushed up, and the lid is opened.
At that time, the closed state is maintained only by the engagement between the lid engaging portion 2 of the cap body A and the engaging portion 30 of the lid B, and the lid can be easily opened.

  When the lid B is pushed up, a portion of the finger that is positioned below the outer peripheral wall 26 of the finger-hanging recess 31 abuts on the outer surface of the sealing rib 27, so that the finger is attached to the outer side of the dispensing cylinder 1 of the cap body A. Can be prevented from touching, and the lid can be opened cleanly without soiling the finger or the dispensing tube 1.

  In addition, since the finger that contacts the sealing rib 27 contacts the curved surface 27a continuous from the lower outer surface of the finger-hanging recess 31, it feels soft when touched by a finger and prevents the finger from being damaged or feeling uncomfortable. can do.

  After opening, the removal part 8 is unplugged from the partition wall 6 of the cap body A, the spout is opened, and the container is tilted to pour out the contents through the pour cylinder 1.

  When the cap of the present invention is opened from the unopened state, the lid is not opened unless the weakened portion 22 is cut from the outer peripheral wall portion 4 of the cap body A. Therefore, the cap is opened depending on the state of the sealing member 5 and the weakened portion 22. This can be easily recognized, and it can be easily confirmed from the appearance that it has been tampered with.

  By closing the lid B on the cap body A again, the lower outer periphery of the sealing cylinder 28 of the lid B is engaged with the upper inner periphery of the dispensing cylinder 1 of the cap main body A, and the inside of the cap A is sealed. Even after opening the partition wall 6 of the cap body A, the lid B can be repeatedly opened and closed to use the content liquid.

The cap of the present invention can be separated from the container body and discarded after the entire contents in the container are used.
At that time, when the cap is opened, the lid B is gripped and pulled outward, the connecting portion with the hinge C of the outer peripheral wall portion 4 is pulled and deformed, and the upper thin portion 15 is torn from above. This is broken to the position of the bottom surface 18 of the slit groove 16.
When the lid B is further pulled, tearing of the upper thin portion 15 moves to the thin outer peripheral wall 14, tearing the lower portion of the thin outer peripheral wall 14 in the vertical direction, and a weakened connecting portion 19a that forms a circumferential tear line. Start breaking.
Since the weakened connecting portion 19a is extremely thin or cut, when the longitudinal tear line is torn and the circumferential tear line begins to tear, the force to tear both tear lines simultaneously does not increase, and the longitudinal tear line It is possible to smoothly break from the circumferential tear line to the circumferential tear line.

When the lower portion of the thin outer peripheral wall 14 is torn, and then the thin bottom portion 12 is completely torn to complete the breakage of the longitudinal tear line and the breakage of the weakening connection portion 19a proceeds, as shown in FIG. The lid body B moves away from the cap body A.
Then, the breakage easily progresses to the end of the weakened connecting portion 19a, the lid B is greatly separated from the cap body A, and when the steady connecting portion 19c is reached while increasing the tearing force at the transition connecting portion 19b, the lid B is constant. Breaking progresses with tearing force.
When the lid B is greatly separated from the cap main body A, a force for pulling the lid B is easily applied. Therefore, the lid B can be easily broken even if the tearing force increases from the transition connecting portion 19b.

By providing the steady connection portion 19c that is thicker than the weakening connection portion 19a at the tear start point of the circumferential tear line, the strength and sealing performance of the cap can be improved. It is desirable to make the range larger than the range of the weakened connecting portion 19a.
In addition, when a cut is made in the weakened connecting portion 19a, it can be easily ruptured compared to the case of making it extremely thin. However, since the strength and sealability of the cap are reduced, whether or not to make a cut is determined in the container. What is necessary is just to select suitably according to needs, such as the kind of the content to fill.

When the cutting of the connecting portion 19 is completed to the end portion of the slit groove 16 and the lid B is further pulled, the end connecting portion 17 in which the lid engaging portion 2 and the outer peripheral wall portion 4 are firmly connected is pulled outward. Thus, the fitting between the cap main body A and the mouth tube portion of the container main body is removed, and the cap and the container main body can be separated and discarded.
If the arc range of the slit groove 16 is increased and the arc range of the end connecting portion 17 is reduced, the force for separating the cap can be reduced, but the strength and sealing performance of the cap is reduced. The range may be determined as appropriate in consideration of the strength of the cap and the type of contents.

  The tamper-proof cap of the present invention can use the contents by repeatedly opening and closing the lid after opening, and the force for tearing the cap body when separating and discarding the cap and the container body is small. In addition, the strength and sealing performance of the cap can be advantageously ensured, and it can be widely used as a hinge cap with a simple structure and low cost. In particular, it is strongly required to ensure safety. It is suitable for use as a cap for containers for beverages and foods.

A cap body B lid C hinge a insertion slot 2 lid engaging portion 3 inner cylinder 4 outer peripheral wall portion 5 sealing member 6 partition 7 pull ring 8 removing portion 10 engaging protrusion 11 outer peripheral cut portion 11a end surface 11b end surface 12 thin bottom Wall 13 Inner perimeter cut portion 14 Thin outer peripheral wall 15 Upper thin portion 16 Slit groove 17 End connection portion 18 Bottom surface 19 Connection portion 19a Weak connection portion 19b Transition connection portion 19c Steady connection portion 20 Sealing portion 21 Inclined connection portion 22 Weak portion 23 Engagement Notch 23a Locking lower surface 24 Sealing protrusion 25 Top wall 26 Outer peripheral wall 27 Sealing rib 27a Curved surface 27b Flat side surface 27c Inclined side surface 28 Sealing cylinder 30 Engaging portion 31 Finger hooking recess 32 Projection portion 33 Locking projection portion 33a Upper surface 33b Inclination surface

Claims (3)

In a hinge cap consisting of a cap body mounted on the mouth tube portion of the container body, and a lid body that is connected to the cap body so as to be opened and closed by a hinge,
The cap body includes a dispensing cylinder, a lid engaging portion that engages with the lid, an outer peripheral wall portion that is continuously provided on the outer edge of the lid engaging portion, and a hinge at the upper end, and on the opposite side of the hinge. An arc-shaped sealing member that is continuously provided so as to form an arc-shaped wide insertion opening at a distance from the outer periphery of the outer peripheral wall portion;
The outer peripheral wall portion is provided with a cut portion in the vertical direction in the vicinity of the hinge,
Between the outer peripheral wall portion and the lid engaging portion, slit grooves having an opening upward are provided on both sides of the cut portion over an arc range of a predetermined circumferential angle,
The notch part forms a hinge-side end surface formed substantially radially on the hinge side, and a terminal surface inclined so as to spread toward the outer periphery on the opposite side of the hinge slightly away from the end surface in the circumferential direction. , Forming a thin outer peripheral wall on the outer peripheral wall portion between the end face and the end face,
A breakable upper thin part is formed between the end face of the cut portion and the slit groove, and a connecting part for connecting the outer peripheral wall part and the lid engaging part is formed between the end face and the slit groove,
On the bottom surface of the slit groove, a breakable thin connecting portion that connects the outer peripheral wall portion and the lid engaging portion is provided,
The sealing member is formed in an arc shape extending to both sides from the central part on the opposite side of the hinge, and includes a wide sealing part, and an inclined connecting part directed from the both side ends of the sealing part to the outer periphery of the outer peripheral wall part,
The sealing portion is provided with a locking notch cut from both sides of the lower end, and a sealing projection protruding upward from both sides toward the center portion at the upper end,
The inclined connecting portions on both sides are continuously provided on the outer periphery of the outer peripheral wall portion through the weakened portion that can be broken,
The lid is connected to the top wall, the outer peripheral wall that is connected to the hinge at a predetermined position, and the lower outer periphery of the outer peripheral wall opposite to the hinge. A sealing rib is provided that is inserted and engages the sealing portion of the sealing member;
On the outer peripheral wall, a finger-hanging recess is formed in the outer periphery on the opposite side of the hinge,
A fraud prevention cap, characterized in that a locking projection that engages with a locking notch of the sealing portion of the cap body when the lid is closed is disposed at the lower end of the outer surface of the sealing rib.   2. The fraud prevention cap according to claim 1, wherein a curved surface continuous from a lower portion of the outer surface of the finger hanging recess is formed on an upper portion of the outer surface of the sealing rib.   Both side surfaces of the sealing rib are formed with an inclined flat side surface that engages with an inclined inner surface of each inclined connecting portion of the sealing member of the cap body from the upper flat side surface and the lower end of the flat side surface when the lid is closed. The tamper-proof cap according to claim 1 or 2, wherein the tamper-proof cap is provided.

Images