JP7076273B2 - Unauthorized opening prevention cap - Google Patents

Description

The present invention relates to an unauthorized opening prevention cap.

In order to prevent unauthorized opening of the container body, an unauthorized opening prevention cap may be attached to the mouth of the container body. Such an unauthorized opening prevention cap allows a specific user (hereinafter referred to as "target person") to open the cap, and then refers to a non-user such as an infant or a child (hereinafter referred to as "non-target person"). It is preferable to be able to prevent unintentional opening due to (referred to as).
As this kind of unauthorized opening prevention cap, a ridged cylindrical inner cap that is screwed to the mouth of the container body and a ridge that is rotatably attached to the inner cap in the circumferential direction and surrounds the inner cap from the outside. It is equipped with a tubular outer cap, and a locked protrusion that protrudes outward is provided on the outer peripheral surface of the inner cap, and the peripheral tubular portion of the outer cap can be elastically deformed inward in the radial direction. There is proposed that the locked protrusion is provided with an elastic piece that can be locked in the circumferential direction (see, for example, Patent Document 1).
In such an unauthorized opening prevention cap, the outer cap can be rotated together with the inner cap in the loosening direction with respect to the mouth portion by pushing the elastic piece inward to lock the locking portion to the locked protrusion. It has become.

Japanese Patent Application Laid-Open No. 2003-104408

However, in the above-mentioned conventional unauthorized opening prevention cap, even if a non-target person holds the outer cap, the elastic piece may be unintentionally pushed inward in the radial direction by pressing the elastic piece with a fingertip or the like. In such a case, the locked protrusion and the elastic piece may be locked, and the container body may be unintentionally opened.

Therefore, an object of the present invention is to provide an unauthorized opening prevention cap that can more reliably prevent opening by a non-target person.

The present invention employs the following means to solve the above problems. That is, the unauthorized opening prevention cap of the present invention rotates in the circumferential direction around the cap axis with respect to the eclipsed cylindrical inner cap screwed to the mouth of the container body containing the contents and the inner cap. A ridged cylindrical outer cap that can be attached and surrounds the inner cap from the outside is provided, and a locked protrusion that protrudes outward is provided on the outer peripheral surface of the inner cap. The cap has a cylindrical inner member and a ridged tubular outer member that has a higher elasticity than the inner member and surrounds the inner member from the outside, and the outer peripheral surface of the outer cap has a tubular inner member. An elastic piece that can be locked in the circumferential direction is projected from the locked protrusion by projecting outward and inserting the tip portion into the insertion hole formed in the outer cap, and the elastic piece is formed. , Extends from the base end portion connected to the outer peripheral surface of the outer cap to the tightening side with respect to the mouth portion along the circumferential direction, protrudes outward to the tip portion, and can be locked with the locked protrusion. When the elastic piece is inserted into the insertion hole portion and the outer cap is rotated toward the loosening side of the inner cap along the circumferential direction with respect to the mouth portion. In a state where the elastic piece is sandwiched in the circumferential direction by the locked protrusion and the opening edge of the insertion hole and the elastic piece is not inserted into the insertion hole, the outer cap is attached to the inner cap. It is characterized by slipping .

In the present invention, in a state where the elastic piece is not inserted into the insertion hole, even if the outer cap is rotated to the loose side in the circumferential direction with respect to the mouth portion, the outer cap slips with respect to the inner cap. On the other hand, when the elastic piece is inserted into the insertion hole, the tip of the elastic piece is locked to the locked protrusion from the loosened side, and in this state, the outer cap is moved to the loosened side with respect to the mouth. When rotated, the outer cap rotates with the inner cap with respect to the mouth. As a result, the container body is opened. Here, by sandwiching the elastic piece inserted into the insertion hole portion in the circumferential direction between the locked protrusion and the opening edge of the insertion hole portion, when the outer cap is rotated to the loosening side, the elastic piece When the tip of the elastic piece is prevented from overcoming the locked protrusion in the circumferential direction or the tip of the elastic piece is prevented from coming out of the insertion hole, and the outer cap is rotated to the loosening side with respect to the mouth. It becomes easy to maintain the state in which the elastic piece is locked to the locked protrusion.
In this way, unless the elastic piece is inserted into the insertion hole, the outer cap is prevented from unintentionally rotating toward the loosened side with respect to the mouth portion together with the inner cap, and the elastic piece is inserted into the insertion hole. It is possible to more reliably prevent opening by a non-target person who does not know the insertion operation.

Further, in the unauthorized opening prevention cap of the present invention, between the inner cap and the outer cap, the inner cap is rotated in the circumferential direction toward the tightening side with respect to the mouth portion. A ratchet that regulates the relative rotation between the outer cap and the outer cap and allows the relative rotation between the inner cap and the outer cap when the outer cap is rotated in the circumferential direction toward the loose side with respect to the mouth portion. A mechanism may be provided.
In the present invention, when the outer cap is rotated to the tightening side in the circumferential direction with respect to the mouth portion, the inner cap rotates to the tightening side together with the outer cap. On the other hand, it can be reattached. Therefore, the convenience of the unauthorized opening prevention cap is further improved.

According to the unauthorized opening prevention cap according to the present invention, when the elastic piece is not inserted into the insertion hole, the outer cap slips with respect to the inner cap on the loosening side, and the elastic piece is inserted into the insertion hole. Since the outer cap rotates together with the inner cap on the loosening side with respect to the mouth portion, it is possible to prevent the outer cap from unintentionally rotating together with the inner cap and more reliably prevent opening by a non-target person.

It is an axial sectional view which shows the container main body which attached the unauthorized opening prevention cap and the unauthorized opening prevention cap which concerns on 1st Embodiment of this invention. FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is a figure explaining the use method of the unauthorized opening prevention cap of FIG. Similarly, it is a figure explaining the usage of the unauthorized opening prevention cap of FIG. Similarly, it is a figure explaining the usage of the unauthorized opening prevention cap of FIG. Similarly, it is a figure explaining the usage of the unauthorized opening prevention cap of FIG. FIG. 3 is an axial sectional view showing a container body to which the unauthorized opening prevention cap and the unauthorized opening prevention cap according to the second embodiment of the present invention are attached. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 7. It is a figure explaining the use method of the unauthorized opening prevention cap of FIG. Similarly, it is a figure explaining the usage of the unauthorized opening prevention cap of FIG. 7.

Hereinafter, the first embodiment of the unauthorized opening prevention cap according to the present invention will be described with reference to the drawings. In each drawing used in the following description, the scale is appropriately changed so that each member can be recognized.
As shown in FIGS. 1 and 2, the unauthorized opening prevention cap 1 according to the present embodiment is screwed to the cylindrical mouth portion 3 of the bottomed cylindrical container body 2 in which the contents are housed. .. The container body 2 contains contents such as medicines, pesticides, and detergents whose use is restricted to a specific target person, but the types of the contents are not limited to these. The unauthorized opening prevention cap 1 includes a climax cylindrical inner cap 5 screwed to the mouth portion 3 and a climax cylindrical outer cap 6 that surrounds the inner cap 5 from the outside.

Here, the inner cap 5 and the outer cap 6 are arranged so that their central axes are located on the common axis. Hereinafter, this central axis is referred to as a cap shaft O, and as shown in FIG. 1, the direction from the bottom of the container body 2 toward the unauthorized opening prevention cap 1 is upward in the state where the unauthorized opening prevention cap 1 is attached to the container body 2. The opposite direction is downward. Further, the direction that intersects the cap axis O in the plan view from the cap axis O is the radial direction, and the direction that orbits around the cap axis O is the circumferential direction. Further, as shown in FIG. 2, for example, in the circumferential direction, the tightening side of the unauthorized opening prevention cap 1 with respect to the mouth portion 3 is the tightening direction A1, and the loosening direction of the unauthorized opening prevention cap 1 with respect to the mouth portion 3 is the loosening direction A2. Refer to.

As shown in FIGS. 1 and 2, the inner cap 5 includes a circular top wall portion 11 in a plan view and a cylindrical peripheral wall portion 12 extending downward from the outer peripheral edge of the top wall portion 11. , Have. The top wall portion 11 and the peripheral wall portion 12 are arranged coaxially with the cap shaft O.
A cylindrical seal cylinder portion 13 fitted inside the mouth portion 3 is projected downward from the outer peripheral edge of the top wall portion 11 in the radial direction.

On the inner peripheral surface of the peripheral wall portion 12, a female screw portion 12A screwed with the male screw portion 3A of the mouth portion 3 is formed. A plurality of locked protrusions 14 are provided on the outer peripheral surface of the peripheral wall portion 12 so as to project outward in the radial direction. As shown in FIG. 2, the locked protrusions 14 have a right-angled triangular shape in a plan view and extend in the vertical direction, and are arranged at equal intervals in the circumferential direction. Of the locked protrusions 14, the first side surface 14A on the tightening direction A1 side is inclined inward in the radial direction toward the tightening direction A1, and the second side surface 14B on the loosening direction A2 side is inclined. , Extends almost radially. Therefore, the inclination angle with respect to the circumferential direction on the first side surface 14A is smaller than the inclination angle with respect to the circumferential direction on the second side surface 14B.
As shown in FIG. 1, the lower end portion of the peripheral wall portion 12 has a larger diameter than the portion above the lower end portion of the peripheral wall portion 12, and bulges outward in the radial direction from the locked protrusion 14. There is. On the outer peripheral surface of the lower end portion of the peripheral wall portion 12, a mounted protrusion 12B protruding outward in the radial direction is formed over the entire circumference.

As shown in FIGS. 1 and 2, the outer cap 6 includes a circular top plate portion 21 in a plan view, a cylindrical peripheral cylinder portion 22 extending downward from the outer peripheral edge of the top plate portion 21, and a cylindrical peripheral cylinder portion 22. Has. The top plate portion 21 and the peripheral cylinder portion 22 are arranged coaxially with the cap shaft O.
The outer cap 6 is formed by a cylindrical inner member 23 and an ecstatic cylindrical outer member 24 that surrounds the inner member 23 from the outside. The inner member 23 is made of, for example, polypropylene or polyethylene, and the outer member 24 is made of, for example, an elastomer, which has more elasticity than the inner member 23. However, the material forming the inner member 23 and the outer member 24 is formed. Is not limited to these. The inner member 23 and the outer member 24 are integrally formed by, for example, two-material molding or insert molding.

The inner diameter of the peripheral cylinder portion 22 is slightly larger than the outer diameter of the lower end portion of the peripheral wall portion 12. Therefore, the displacement of the lower end portion of the peripheral cylinder portion 22 in the radial direction is limited by the lower end portion of the peripheral cylinder portion 22 coming into contact with the lower end portion of the peripheral wall portion 12. The lower end of the peripheral wall portion 12 has a large diameter to limit the displacement of the lower end portion of the peripheral cylinder portion 22 in the radial direction, but the protrusion protruding outward in the radial direction to the lower end portion of the peripheral wall portion 12. Other configurations, such as forming a portion or forming a protrusion protruding inward in the radial direction at the lower end portion of the peripheral cylinder portion 22, limit the displacement inward in the radial direction at the lower end portion of the peripheral cylinder portion 22. The displacement limiting portion may be configured.
Further, on the inner peripheral surface of the lower end portion of the peripheral cylinder portion 22, a mounting protrusion 22A that projects inward in the radial direction and engages with the mounted protrusion 12B from below is formed over almost the entire circumference.

As shown in FIG. 2, a plurality of ratchet piece portions 25 are provided so as to project inward in the radial direction on the inner peripheral surface of the peripheral cylinder portion 22. The ratchet piece 25 has a thin plate shape and is arranged at equal intervals in the circumferential direction. The ratchet piece portion 25 extends radially inward toward the tightening direction A1 so as to be separated from the inner peripheral surface of the peripheral cylinder portion 22, and the tip portion of the ratchet piece portion 25 is a peripheral wall portion. It is in contact with or in close proximity to the outer peripheral surface of the twelve. The ratchet mechanism is configured by the ratchet piece portion 25 and the locked protrusion portion 14.

Further, the peripheral cylinder portion 22 is formed with an insertion hole portion 22B extending in the vertical direction. The lower end of the insertion hole portion 22B is open downward, and the peripheral end faces 22C and 22D of the insertion hole portion 22B of the peripheral cylinder portion 22 approach each other in the radial direction. Is inclined with respect to the radial direction.
Further, as shown in FIGS. 1 and 2, an elastic piece projecting outward in the radial direction on the outer peripheral surface of the peripheral surface of the peripheral cylinder portion 22 adjacent to the insertion hole portion 22B on the tightening direction A1 side. 26 is formed. The elastic piece 26 extends radially outward toward the tightening direction A1 so as to be separated from the outer peripheral surface of the peripheral cylinder portion 22. The base end portion of the elastic piece 26 located on the loosening direction A2 side is connected to the peripheral cylinder portion 22. A locking portion 26A protruding outward in the radial direction is formed at the tip portion of the elastic piece 26 located on the tightening direction A1 side. The thickness of the locking portion 26A in the circumferential direction is the same as the width of the insertion hole portion 22B in the circumferential direction, and the locking portion 26A can be inserted into the insertion hole portion 22B. Further, the radial width of the locking portion 26A is such that when the locking portion 26A is inserted into the insertion hole portion 22B, the locking portion 26A abuts or approaches the peripheral wall portion 12.

Next, a method of using the unauthorized opening prevention cap 1 having the above configuration will be described.
As shown in FIGS. 2 and 3, in a state where the locking portion 26A is not inserted into the insertion hole portion 22B, when the outer cap 6 is rotated in the loosening direction A2, the ratchet piece portion 25 becomes the locked protrusion portion 14. It approaches and abuts from the tightening direction A1 side. Then, when the outer cap 6 is further rotated in the loosening direction A2 with respect to the inner cap 5, the base end of the ratchet piece portion 25 is guided along the first side surface 14A of the locked protrusion 14 at the tip end portion. It elastically deforms outward in the radial direction starting from the portion, and gets over the locked protrusion 14. Therefore, the outer cap 6 idles with respect to the inner cap 5 in the loosening direction A2, and the force for rotating the outer cap 6 in the loosening direction A2 is not transmitted to the inner cap 5. As a result, the outer cap 6 cannot rotate the inner cap 5 with respect to the mouth portion 3 in the loosening direction A2. Therefore, unintentional opening by non-target persons is prevented.

Here, the lower end portion of the peripheral cylinder portion 22 abuts on the lower end portion of the peripheral wall portion 12, so that the displacement of the peripheral cylinder portion 22 inward in the radial direction is restricted. Therefore, when the outer cap 6 is rotated with respect to the inner cap 5 in the loosening direction A2, the ratchet piece portion 25 cannot get over the locked protrusion 14 with respect to the locked protrusion 14. The portion 22 is suppressed from approaching the peripheral wall portion 12. As a result, when the outer cap 6 is rotated with respect to the inner cap 5 in the loosening direction A2, the ratchet piece portion 25 cannot get over the locked protrusion 14 and is tightened with respect to the locked protrusion 14. It is more reliably prevented that the outer cap 6 is locked from the A1 side and rotates together with the inner cap 5 in the loosening direction A2 with respect to the mouth portion 3.

On the other hand, in order to open the mouth portion 3, first, as shown in FIG. 4, the elastic piece 26 is folded back from the base end portion as a starting point, and the locking portion 26A is inserted into the insertion hole portion 22B. When the outer cap 6 is rotated in the loosening direction A2 with respect to the mouth portion 3 in this state, the locking portion 26A is tightened to the first side surface 14A of the locked protrusion 14 in the tightening direction A1 as shown in FIG. Contact and lock from the side. Then, when the outer cap 6 is rotated in the loosening direction A2, the locking portion 26A is located on the first side surface 14A of the locked protrusion 14 and the peripheral cylinder portion 22 on the tightening direction A1 side of the insertion hole portion 22B. It is sandwiched in the circumferential direction by the end face 22C. As a result, the locking portion 26A is restricted from moving in the circumferential direction with respect to the inner cap 5. Then, the force for rotating the outer cap 6 in the loosening direction A2 is transmitted to the inner cap 5, and when the outer cap 6 is further rotated in the loosening direction A2 with respect to the mouth portion 3, the outer cap 6 is combined with the inner cap 5. It rotates in the loosening direction A2 with respect to the mouth portion 3. As a result, it is removed from the mouth 3 together with the inner cap 5.

Here, in order to rotate the outer cap 6 together with the inner cap 5 in the loosening direction A2 with respect to the mouth portion 3, it is necessary to fold back the elastic piece 26 and insert it into the insertion hole portion 22B. It is suppressed that the elastic piece 26 is inserted into the insertion hole portion 22B.
Further, as described above, since the locking portion 26A is sandwiched in the circumferential direction between the first side surface 14A of the locked protrusion 14 and the end surface 22C of the insertion hole portion 22B of the peripheral cylinder portion 22. Even if the outer cap 6 is rotated in the loosening direction A2, it is prevented that the locking portion 26A gets over the first side surface 14A of the locked protrusion 14 and the locking portion 26A does not come out of the insertion hole portion 22B. ing. As a result, the locked state between the locked portion 26A and the locked protrusion 14 is more reliably maintained.

Further, in order to further prevent the elastic piece 26 from being restored and deformed and the locking portion 26A from coming out of the insertion hole portion 22B, it is possible to hold the folded elastic piece 26 with a finger as shown in FIG. preferable.
When the finger holding the folded elastic piece 26 is released, the elastic piece 26 is restored and deformed as shown in FIG. 2, and the locking portion 26A comes out of the insertion hole portion 22B. Therefore, it is not necessary to pull out the locking portion 26A from the insertion hole portion 22B after opening the package.

When the unauthorized opening prevention cap 1 is reattached to the mouth portion 3 of the container body 2, the outer cap 6 is rotated with respect to the mouth portion 3 in the tightening direction A1 as shown in FIG. When the outer cap 6 is rotated with respect to the inner cap 5 in the tightening direction A1, the tip end portion of the ratchet piece portion 25 comes into contact with the second side surface 14B of the locked protrusion 14 from the loosening direction A2 side. Here, since the inclination angle of the second side surface 14B with respect to the circumferential direction is larger than the inclination angle of the first side surface 14A, the tip portion of the ratchet piece portion 25 is guided along the second side surface 14B and is locked. It does not get over 14 and is locked to the second side surface 14B. Therefore, the outer cap 6 rotates together with the inner cap 5 in the tightening direction A1 with respect to the mouth portion 3. As a result, the unauthorized opening prevention cap 1 is reattached to the mouth portion 3 of the container body 2.
As described above, use the unauthorized opening prevention cap.

As described above, according to the unauthorized opening prevention cap 1 according to the present embodiment, when the locking portion 26A is not inserted into the insertion hole portion 22B, the outer cap 6 slips with respect to the inner cap 5 in the loosening direction A2 and is locked. By inserting the portion 26A into the insertion hole portion 22B, the outer cap 6 rotates together with the inner cap 5 in the loosening direction A2 with respect to the mouth portion 3, so that the outer cap 6 unintentionally with respect to the mouth portion 3 together with the inner cap 5. It can be prevented from rotating and can be more reliably prevented from being opened by a non-target person. Here, since the first side surface 14A of the locked protrusion 14 and the end surface 22C of the insertion hole portion 22B of the peripheral cylinder portion 22 sandwich the locking portion 26A inserted into the insertion hole portion 22B in the circumferential direction. When the outer cap 6 is rotated in the loosening direction A2, it becomes easy to maintain the state in which the locking portion 26A is locked to the locked protrusion 14.
Further, when the outer cap 6 is rotated with respect to the mouth portion 3 in the tightening direction A1, the ratchet piece portion 25 is locked to the second side surface 14B of the locked protrusion 14 from the loosening direction A2 side, which is illegal. The opening prevention cap 1 can be reattached to the mouth portion 3.

Next, a second embodiment of the unauthorized opening prevention cap according to the present invention will be described with reference to the drawings. The embodiment described here has the same basic configuration as the above-described embodiment, and has another element added to the above-mentioned embodiment. Therefore, in the following drawings, the same components as those in the above drawings are designated by the same reference numerals, and this description will be omitted.

As shown in FIGS. 7 and 8, the unauthorized opening prevention cap 50 according to the present embodiment includes an inner cap 51 and an outer cap 52.
On the outer peripheral surface of the peripheral wall portion 61 of the inner cap 51, a plurality of locked protrusions 62 are provided so as to project outward in the radial direction. The locked protrusion 62 has a right-angled triangular shape in a plan view and extends in the vertical direction, and is arranged at equal intervals in the circumferential direction. Of the locked protrusions 62, the first side surface 62A on the tightening direction A1 side extends substantially in the radial direction, and the second side surface 62B on the loosening direction A2 side extends in the radial direction toward the loosening direction A2. It is inclined toward the inside.

Unlike the outer cap 6 according to the first embodiment, the outer cap 52 is formed by a bulging cylindrical outer cap main body 71 and an elastic piece 72 attached to the outer cap main body 71. The outer cap main body 71 and the elastic piece 72 are integrally formed by, for example, two-material molding or insert molding, similarly to the outer cap 6 according to the first embodiment.

The peripheral tube portion 73 of the outer cap 52 is not provided with the ratchet piece portion 25.
The elastic piece 72 extends in the circumferential direction so as to cross the insertion hole portion 22B, and the base end portion located on the tightening direction A1 side of the elastic piece 72 is connected to the peripheral cylinder portion 73. .. On the proximal end side of the radial outer surface of the elastic piece 72, a plurality of protruding rib portions 72A extending in the vertical direction and projecting outward in the radial direction are formed at intervals in the circumferential direction.

Next, a method of using the unauthorized opening prevention cap 50 having the above configuration will be described.
Similar to the unauthorized opening prevention cap 1 according to the first embodiment described above, even if the outer cap 52 is rotated in the loosening direction A2 with respect to the mouth portion 3 in a state where the elastic piece 72 is not inserted into the insertion hole portion 22B. , The outer cap 52 slips with respect to the inner cap 51.
This prevents unintentional opening by non-target persons. Here, since the elastic piece 72 extends across the insertion hole portion 22B, it is suppressed that the elastic piece 72 is unintentionally inserted into the insertion hole portion 22B by a non-target person.

In order to open the mouth portion 3, first, as shown in FIG. 9, the elastic piece 72 is bent inward in the radial direction starting from the middle portion in the circumferential direction, and the tip portion of the elastic piece 72 is inserted into the insertion hole portion. Insert it into 22B. In this state, when the outer cap 52 is rotated with respect to the mouth portion 3 in the loosening direction A2, as shown in FIG. 10, the tip portion of the elastic piece 72 is the first side surface 62A of the locked protrusion 62 and the peripheral cylinder. Of the portions 73, the insertion hole portion 22B is sandwiched in the circumferential direction by the end surface 22C on the tightening direction A1 side. Then, when the outer cap 52 is rotated in the loosening direction A2 with respect to the mouth portion 3, the outer cap 52 rotates in the loosening direction A2 with respect to the mouth portion 3 together with the inner cap 51, and from the mouth portion 3 together with the inner cap 51. Will be removed.
As described above, the unauthorized opening prevention cap 50 is used.

The unauthorized opening prevention cap 50 according to the present embodiment is intended to be attached to the container body 2 containing the contents to be used up once after opening. Therefore, unlike the unauthorized opening prevention cap 1 according to the first embodiment, the unauthorized opening prevention cap 50 does not need to be reattached to the mouth portion 3. However, for example, when the outer cap 52 is rotated in the tightening direction A1 with the tip of the elastic piece 72 inserted into the insertion hole 22B, the tip of the elastic piece 72 becomes the second locked protrusion 62. It is sandwiched in the circumferential direction by the side surface 62B and the end surface 22D on the loosening direction A2 side of the insertion hole portion 22B of the peripheral cylinder portion 22. When the outer cap 52 is rotated in the tightening direction A1 in this state, the outer cap 52 rotates together with the inner cap 51 in the tightening direction A1. By doing so, it is possible to reattach the unauthorized opening prevention cap 50 to the mouth portion 3.

As described above, the unauthorized opening prevention cap 50 according to the present embodiment also has the same operation and effect as the unauthorized opening prevention cap 1 according to the first embodiment described above.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, at least one elastic piece and one locked protrusion may be provided, and a plurality of elastic pieces or only one locked protrusion may be provided.
The elastic piece may extend across the insertion hole. Further, the elastic piece may extend in another direction such as a vertical direction instead of the circumferential direction as long as it can be inserted into the insertion hole portion. Further, in the first embodiment, the tip of the elastic piece is provided with a locking portion, but if the tip of the elastic piece can be locked with the protrusion to be locked in the circumferential direction, it is locked. The portion may not be provided. Similarly, in the second embodiment, a locking portion may be provided at the tip end portion of the elastic piece.
The insertion hole has a shape that opens downward at the lower end, but has other shapes such as a shape that opens upward at the upper end and a shape that does not open vertically at both upper and lower ends like the window part. You may. Further, the insertion hole portion does not need to extend in the vertical direction.
In the first embodiment, the ratchet mechanism may not be provided, and in the second embodiment, the ratchet mechanism may be provided.
The outer cap is integrally formed by two-material molding or insert molding, but may be formed by separately producing the inner member and the outer member and then fitting the inner member into the outer member. Further, although the outer cap is composed of a combination of two members, it may be composed of a single member. For example, when the outer cap is made of polypropylene or the like, the elastic piece and the ratchet piece can be made thin to give elasticity to the elastic piece and the ratchet piece.
Although it is described as "cylindrical" in the description of each constituent member, it may have another shape as appropriate, such as an elliptical shape, another polygonal shape such as a triangular shape or a rectangular shape.
The container body is not limited to a single-layer bottle-type container, and may be a laminated container such as a double container or a pouch container.

According to the present invention, industrial applicability is recognized for an unauthorized opening prevention cap that can more reliably prevent opening by a non-target person.

1,50 Unauthorized opening prevention cap, 2 Container body, 3 mouths, 5,51 inner cap, 6,52 outer cap, 14,62 locked protrusion, 22B insertion hole, 25 ratchet piece, 26, 72 Elastic piece

Claims (2)

A sloping cylindrical inner cap that is screwed to the mouth of the container body that houses the contents,
An eclipsed cylindrical outer cap that is rotatably attached to the inner cap in the circumferential direction around the cap axis and surrounds the inner cap from the outside,
Equipped with
A locked protrusion protruding outward is provided on the outer peripheral surface of the inner cap.
The outer cap has a cylindrical inner member and a ridged tubular outer member that has higher elasticity than the inner member and surrounds the inner member from the outside.
An elastic piece that can be locked in the circumferential direction protrudes from the outer peripheral surface of the outer cap by projecting outward and inserting the tip portion into the insertion hole formed in the outer cap. It is set up and
The elastic piece extends from the base end portion connected to the outer peripheral surface of the outer cap to the tightening side with respect to the mouth portion along the circumferential direction, protrudes outward to the tip portion, and the locked protrusion portion. A locking part that can be locked with is formed,
When the elastic piece is inserted into the insertion hole portion and the outer cap is rotated toward the loosening side of the inner cap with respect to the mouth portion along the circumferential direction, the locked protrusion and the said It is sandwiched in the circumferential direction by the opening edge of the insertion hole ,
An unauthorized opening prevention cap , wherein the outer cap slips with respect to the inner cap when the elastic piece is not inserted into the insertion hole . Between the inner cap and the outer cap, the relative rotation between the inner cap and the outer cap is restricted when the outer cap is rotated toward the tightening side of the inner cap with respect to the mouth portion. The fraud according to claim 1, further comprising a ratchet mechanism that allows relative rotation between the inner cap and the outer cap when the outer cap is rotated toward the loosened side. Opening prevention cap.

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