JP7445953B2 - cap - Google Patents

Description

The present invention relates to a cap in which a spout hole is formed in the cap body when a weakened portion is broken and a detachment member is detached from the cap body.

BACKGROUND ART Conventionally, as shown in FIGS. 12 and 13, for example, some caps of this type have an inner stopper 102 fixed to a container 101 and an outer lid 103 attached to the inner stopper 102.

The outer lid 103 includes a stationary portion 104 that is fitted onto the inner stopper 102, and a lid main body 106 that is connected to the stationary portion 104 via a hinge 105 so as to be openable and closable.

The inner stopper 102 has a detachable member 108 surrounded by a breakable weakened portion 107 . The detachment member 108 has an upwardly extending extending plate 109, and a pair of inner plug side flaps 110 are provided at the upper end of the extending plate 109.

The lid body 106 is provided with a rectangular cylinder piece 111 that is open at the bottom. A pair of lid side flaps 112 is provided at the lower end of the rectangular cylinder piece 111.

As shown in the solid line in FIG. 12 and in FIG. 13, when the cap 100 is unopened, the extension plate 109 is inserted from below into the rectangular cylinder piece 111, and the inner plug side flap 110 is inserted into the rectangular cylinder piece 111. , bent with the tip facing diagonally downward. Further, the lid-side flap 112 is bent within the rectangular cylinder piece 111 with its tip facing diagonally upward, and is located below the inner plug-side flap 110.

When the lid body 106 of the unopened cap 100 is opened as shown by the imaginary line in FIG. 12, the rectangular cylinder piece 111 moves upward together with the lid body 106, and the lid side flap 112 moves downward, as shown in FIG. Since the inner plug side flap 110 is engaged with the inner plug side flap 110, an upward force acts on the inner plug side flap 110, and the detachment member 108 is pulled upward, and the weakened part 107 breaks, and as shown in FIG. The member 108 is separated from the inner stopper 102, and a spout hole 113 is formed in the inner stopper 102.

Incidentally, the cap 100 as described above is described, for example, in Patent Document 1 below.

Patent No. 5901198

However, in the above-mentioned conventional type, as shown in FIG. When an upward force is applied, the lower part of the rectangular cylinder piece 111 is pushed by the inner plug-side flap 110 and deforms outward, and the lid-side flap 112 escapes from the inner plug-side flap 110 to the outside and becomes the lid-side flap 112. There is a problem that the engagement with the inner plug side flap 110 becomes insufficient, and upward force is not sufficiently transmitted from the lid body 106 to the detachment member 108.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cap in which a lid side bending piece and a detachment side bending piece fully engage with each other when an unopened cap is opened.

In order to achieve the above object, the first invention includes a cap body that is attached to a container, and a lid that is attached to the cap body via a hinge so that it can be opened and closed,
the cap body has a breakaway member surrounded by a breakable weakened portion;
When the lid is opened, the weakened portion is broken and the detachable member is detached from the cap body, and a spout hole is formed in the cap body, the cap comprising:
The detachment member has a detachment side tube;
The detachment side cylinder has a detachment side bending piece bent toward the inner peripheral side,
The lid has a lid side insert that is inserted into the release side cylinder in a closed state;
The lid-side insert has a lid-side bent piece bent toward the outer periphery,
The detachment side bending piece and the cover side bending piece are located between the inner circumference of the detachment side cylinder and the outer circumference of the cover side insert body,
When opening the lid, the lid-side bent piece engages with the detachment-side bent piece in the opening direction,
The lid is provided with a deformation prevention member that prevents the withdrawal side cylinder from being deformed radially outward when the lid side bent piece engages with the withdrawal side bent piece ,
When opening the lid, a first withdrawal prevention device prevents the withdrawal side bending piece from reversing in the withdrawal direction opposite to the bending direction and slipping out from between the inner periphery of the withdrawal side cylinder and the outer periphery of the lid side insert body. The member is provided on the lid side insert .

According to this, when opening an unopened cap, by opening the lid, the lid side bent piece engages with the removal side bent piece in the opening direction, and the force in the opening direction of the lid acts on the removal side bent piece. , the detachment member is pulled in the opening direction of the lid, the weakened portion is broken, the detachment member is detached from the cap body, and a spout hole is formed in the cap body.

Since the deformation prevention member prevents the detachment side tube from deforming outward in the radial direction, the detachment side tube is prevented from deforming outward in the radial direction when the lid side bending piece engages with the detachment side bending piece. be able to. As a result, the breakaway side bending piece does not escape from the cover side bending piece to the outside, the cover side bending piece and the breakaway side bending piece are sufficiently engaged, and the force in the opening direction is sufficiently transmitted from the cover to the breakaway member. .

In addition , when opening the lid, the first withdrawal prevention member prevents the withdrawal side bending piece from reversing in the withdrawal direction and slipping out from between the inner periphery of the withdrawal side tube and the outer periphery of the lid side insert body. The lid side bending piece and the detachment side bending piece fully engage with each other.

The second invention includes a cap body that is attached to a container, and a lid that is attached to the cap body via a hinge so that it can be opened and closed,
the cap body has a breakaway member surrounded by a breakable weakened portion;
When the lid is opened, the weakened portion is broken and the detachable member is detached from the cap body, and a spout hole is formed in the cap body, the cap comprising:
The detachment member has a detachment side tube;
The detachment side cylinder has a detachment side bending piece bent toward the inner peripheral side,
The lid has a lid side insert that is inserted into the release side cylinder in a closed state;
The lid-side insert has a lid-side bent piece bent toward the outer periphery,
The detachment side bending piece and the cover side bending piece are located between the inner circumference of the detachment side cylinder and the outer circumference of the cover side insert body,
When opening the lid, the lid-side bent piece engages with the detachment-side bent piece in the opening direction,
The lid is provided with a deformation prevention member that prevents the withdrawal side cylinder from being deformed radially outward when the lid side bent piece engages with the withdrawal side bent piece,
When opening the lid, a second withdrawal prevention device prevents the lid-side bending piece from reversing in the withdrawal direction opposite to the bending direction and slipping out from between the inner periphery of the withdrawal-side cylinder and the outer periphery of the lid-side insert body. The member is provided on the detachment side cylinder.

According to this, when the lid is opened, the second removal prevention member prevents the lid-side bending piece from reversing in the removal direction and slipping out from between the inner periphery of the removal-side cylinder and the outer periphery of the lid-side insertion body. Therefore, the lid-side bent piece and the detachment-side bent piece are fully engaged.

The third invention includes a cap body that is attached to a container, and a lid that is attached to the cap body via a hinge so that it can be opened and closed,
the cap body has a breakaway member surrounded by a breakable weakened portion;
When the lid is opened, the weakened portion is broken and the detachable member is detached from the cap body, and a spout hole is formed in the cap body, the cap comprising:
The detachment member has a detachment side tube;
The detachment side cylinder has a detachment side bending piece bent toward the outer circumferential side,
The lid has a lid side cylinder that is fitted onto the detachable side cylinder in a closed state,
The lid-side cylinder has a lid-side bent piece bent toward the inner circumference,
The detachment side bent piece and the cover side bent piece are located between the outer periphery of the detachment side cylinder and the inner periphery of the cover side cylinder,
When opening the lid, the lid-side bent piece engages with the detachment-side bent piece in the opening direction,
The lid is provided with a deformation prevention member that prevents the withdrawal side cylinder from deforming inward in the radial direction when the lid side bent piece engages with the withdrawal side bent piece ,
When opening the lid, the first withdrawal prevention member prevents the withdrawal side bending piece from reversing in the withdrawal direction opposite to the bending direction and slipping out from between the outer periphery of the withdrawal side cylinder and the inner periphery of the lid side cylinder. is provided on the lid side tube .

According to this, when opening an unopened cap, by opening the lid, the lid side bent piece engages with the removal side bent piece in the opening direction, and the force in the opening direction of the lid acts on the removal side bent piece. , the detachment member is pulled in the opening direction of the lid, the weakened portion is broken, the detachment member is detached from the cap body, and a spout hole is formed in the cap body.

Since the deformation prevention member prevents the detachment side tube from deforming inward in the radial direction, the detachment side tube is prevented from deforming inward in the radial direction when the lid side bending piece engages with the detachment side bending piece. be able to. As a result, the breakaway side bending piece does not escape inward from the lid side bending piece, the cover side bending piece and the breakaway side bending piece are sufficiently engaged, and the force in the opening direction is sufficiently transmitted from the lid to the breakaway member. .

In addition , when opening the lid, the first removal prevention member prevents the removal side bending piece from reversing in the removal direction and slipping out from between the outer periphery of the removal side cylinder and the inner periphery of the lid side cylinder. The side bending piece and the detachment side bending piece fully engage with each other.

The fourth invention includes a cap body that is attached to a container, and a lid that is attached to the cap body via a hinge so that it can be opened and closed,
the cap body has a breakaway member surrounded by a breakable weakened portion;
When the lid is opened, the weakened portion is broken and the detachable member is detached from the cap body, and a spout hole is formed in the cap body, the cap comprising:
The detachment member has a detachment side tube;
The detachment side cylinder has a detachment side bending piece bent toward the outer circumferential side,
The lid has a lid side cylinder that is fitted onto the detachable side cylinder in a closed state,
The lid-side cylinder has a lid-side bent piece bent toward the inner circumference,
The detachment side bent piece and the cover side bent piece are located between the outer periphery of the detachment side cylinder and the inner periphery of the cover side cylinder,
When opening the lid, the lid-side bent piece engages with the detachment-side bent piece in the opening direction,
The lid is provided with a deformation prevention member that prevents the withdrawal side cylinder from deforming inward in the radial direction when the lid side bent piece engages with the withdrawal side bent piece,
A second withdrawal prevention member that prevents the lid-side bending piece from reversing in the withdrawal direction opposite to the bending direction and slipping out from between the outer periphery of the removal-side cylinder and the inner periphery of the lid-side cylinder when opening the lid. is provided on the detachment side cylinder.

According to this, when opening the lid, the second removal prevention member prevents the lid-side bent piece from reversing in the removal direction and slipping out from between the outer periphery of the removal-side cylinder and the inner periphery of the lid-side cylinder. , the lid-side bent piece and the detachment-side bent piece are fully engaged.

In the cap according to the fifth invention, the cap body has a pouring tube,
The weakened part and the detachment member are provided in the spout cylinder,
The weakened portion is inclined obliquely upward from the inner circumferential side of the spouting tube toward the outer circumferential side of the detachable member with respect to the horizontal plane at a location on the opposite side of the detachable member from the hinge.

According to this, when the lid of an unopened cap is opened, the weakened portion first begins to break at a location opposite to the hinge, and then continues to break as it approaches the hinge. Here, since the weakened portion is inclined obliquely upward at a location opposite to the hinge, the resistance when the weakened portion first breaks is reduced, and the weakened portion can be broken smoothly.

As described above, according to the present invention, when the lid-side bent piece engages with the withdrawal-side bent piece, it is possible to prevent the withdrawal-side cylinder from deforming radially outward or inward, so that the withdrawal-side bent piece The lid-side bent piece does not escape outward or inward from the lid-side bent piece, and the lid-side bent piece and the detachment-side bent piece are fully engaged, and the force in the opening direction is sufficiently transmitted from the lid to the detachment member.

FIG. 2 is a sectional view of the cap in the first embodiment of the present invention, showing an unopened state. FIG. 6 is an enlarged sectional view of a weakened portion of the cap on the opposite side of the hinge. FIG. 6 is an enlarged sectional view of a weakened portion at the hinge side of the cap. FIG. 6 is an enlarged sectional view of the detachment-side bent piece and the lid-side bent piece of the cap. It is a sectional view of the cap in the same figure, showing an open state before the lid is closed and attached to the container. 6 is a view taken along the line XX in FIG. 5. FIG. It is a sectional view of the same cap, showing a state in which the lid is slightly opened from an unopened state. It is a cross-sectional view of the same cap, showing a state in which the lid is further opened from an unopened state. It is a cross-sectional view of the same cap, showing the lid completely opened from an unopened state. It is a sectional view of the cap in the 2nd embodiment of the present invention, and shows an unopened state. FIG. 6 is an enlarged sectional view of the detachment-side bent piece and the lid-side bent piece of the cap. It is a sectional view of a conventional cap, showing an unopened state. 13 is a view taken along the line XX in FIG. 12. FIG. It is a sectional view of the same cap, showing a state in which the lid is slightly opened from an unopened state. It is a cross-sectional view of the same cap, showing a state in which the lid is further opened from an unopened state.

Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
In the first embodiment, FIG. 1 shows a cross section of an unopened cap 1, which includes a cap body 5 attached to a container 2 such as a plastic bottle, and a hinge 6 attached to the cap body 5. It has a lid 7 which is attached so as to be openable and closable.

The cap body 5 includes a cylindrical spouting barrel 10, a cylindrical body 11 provided so as to surround the outside of the lower part of the spouting barrel 10, and an upper end of the barrel 11 and the outer periphery of the spouting barrel 10. A top wall section 12 provided between the two, a mounting groove 13 formed over the entire circumference below the top wall section 12 and between the pouring tube 10 and the body section 11, and a weakened section 15 whose periphery can be broken. It has a detachable member 16 surrounded by.

The cap body 5 is attached to the container 2 by fitting the opening 3 of the container 2 into the attachment groove 13 from below.

The weakened portion 15 and the detachment member 16 are provided within the spout cylinder 10. The detachment member 16 has a cylindrical detachment tube 20 and a disc-shaped bottom plate portion 21 provided at the bottom of the detachment tube 20.

The weakened part 15 is formed over the entire circumference between the bottom part 23 of the spouting cylinder 10 and the lower outer periphery of the detachable member 16, and the thickness of the weakened part 15 is thinner than the thickness of the bottom part 23 of the spouting cylinder 10. In addition, as shown in FIGS. 1 and 2, the weakened portion 15 is placed against the horizontal plane at a location A on the opposite side of the hinge 6 with respect to the detachment member 16 (hereinafter referred to as the location A on the opposite side of the hinge). It is inclined obliquely upward at a predetermined angle B from the inner circumferential side of the cylinder 10 toward the outer circumferential side of the detachment member 16. Note that the predetermined angle B is set to, for example, about 30 degrees.

In addition, as shown in FIGS. 1 and 3, the weakened portion 15 is not inclined at a location C on the side where the hinge 6 is provided with respect to the detachment member 16 (hereinafter referred to as hinge side location C), but is horizontal. It is set in the direction.

As shown in FIGS. 1 and 4, the detachable tube 20 includes a tube body 25 and a detachable bending piece 26 formed at the tip of the tube body 25 over the entire circumference. As shown in FIG. 5, the detachment-side bending piece 26 is folded back diagonally downward (see the solid line) from an obliquely upward position (see the imaginary line), and is bent toward the inner peripheral side of the cylinder body 25. A plurality of notches 27 are formed in the detachment side bent piece 26 at a plurality of locations in the circumferential direction.

As shown in FIG. 1, the lid 7 includes a circular top plate part 28, a cylindrical skirt part 29 hanging from the outer peripheral edge of the top plate part 28, and a cylindrical seal member 30 in a closed state. It has a lid side cylinder 31 (an example of a lid side inserter) inserted into the detachable side cylinder 20 and a deformation prevention member 32.

The top wall portion 12 of the cap body 5 is provided with a circular locking ring 17 that is fitted into the inner periphery of the skirt portion 29 of the lid 7 to lock the lid 7 when the lid 7 is closed. The locking ring 17 has a locking protrusion 18 that projects radially outward at its tip.

A lid-side protrusion 33 that protrudes radially inward is provided on the inner periphery of the lower end of the skirt portion 29 of the lid 7 . As shown in FIG. 1, when the lid 7 is closed, the lid side protrusion 33 engages with the locking protrusion 18 in the opening direction O (from bottom to top), and the sealing member 30 closes the spout barrel 10. It is in close contact with the inner periphery of the tip, and the gap between the tip of the spouting cylinder 10 and the lid 7 is sealed over the entire circumference.

As shown in FIGS. 1 and 4, the lid side tube 31 has a tube body 37 provided on the top plate 28, and a lid side bent piece 38 formed at the tip of the tube body 37 over the entire circumference. are doing. As shown in FIG. 5, when the lid 7 is open, the lid-side bent piece 38 is folded back diagonally downward (see the solid line) from the diagonally upward position (see the imaginary line) to the outer peripheral side of the cylinder body 37. It's bent. Incidentally, an uneven portion 39 consisting of a plurality of peaks and valleys is formed on the outer peripheral portion of the folded back bending piece 38 on the lid side.

When opening the lid 7, the lid-side bending piece 38 engages with the removal-side bending piece 26 in the opening direction O (from bottom to top). Further, as shown in FIGS. 1 and 4 to 6, the deformation prevention member 32 deforms the detachment side cylinder 20 radially outward when the lid side bending piece 38 engages with the detachment side bending piece 26. This is a member for preventing this, and includes a cylindrical portion 41 provided on the top plate portion 28 and disposed radially outward from the lid side cylinder 31, and a plurality of protrusions provided on the inner periphery of the cylindrical portion 41. 42.

As shown in FIGS. 1 and 4, the cylindrical portion 41 is externally fitted onto the detachable tube 20. As shown in FIGS. Further, as shown in FIG. 6, the protrusions 42 protrude radially inward from the inner circumferential surface of the cylindrical portion 41 and are formed at multiple locations in the circumferential direction.

As shown in FIGS. 1 and 4, the detachment side bent piece 26 and the lid side bent piece 38 are located between the inner circumference of the detachment side cylinder 20 and the outer circumference of the cover side cylinder 31.

When opening the lid 7, the breakaway bending piece 26 reverses in the removal direction D (see FIG. 4), which is opposite to the bending direction, and comes out from between the inner periphery of the breakaway tube 20 and the outer periphery of the lid tube 31. A plurality of first slip-off prevention members 44 are provided on the outer periphery of the lid-side cylinder 31 to prevent the lid-side bending piece 38 from being reversed in the slip-off direction E (see FIG. 4), which is opposite to the bending direction. A plurality of second slip-off prevention members 45 are provided on the inner periphery of the detachable tube 20 to prevent the detachable tube 20 from slipping out from between the inner periphery of the detachable tube 20 and the outer periphery of the lid tube 31 .

As shown in FIGS. 5 and 6, the first slip-off prevention members 44 are provided at multiple locations in the circumferential direction of the lid side tube 31, and protrude radially outward from the outer circumferential surface of the lid side tube 31. . As shown in FIGS. 4 and 5, at the lower end (tip) of the first slip-off prevention member 44, there is a first incline that is inclined upward from the outer circumferential surface of the lid side cylinder 31 to the radially outer side of the lid side cylinder 31. An inclined surface 47 is formed.

Further, as shown in FIGS. 5 and 6, the second detachment prevention members 45 are provided at a plurality of locations in the circumferential direction of the detachment side cylinder 20, and extend radially inward from the inner circumferential surface of the detachment side cylinder 20. It stands out. As shown in FIGS. 4 and 5, the upper end (tip) of the second detachment prevention member 45 has a groove that is inclined downward from the inner circumferential surface of the detachment side tube 20 toward the radial inside of the detachment side tube 20. Two inclined surfaces 48 are formed.

As shown in FIG. 1, the detachment side tube 20, the lid side tube 31, and the deformation prevention member 32 have the same first central axis 51. Furthermore, the pouring cylinder 10, the locking ring 17, the skirt portion 29, and the sealing member 30 have the same second central axis 52. The first central axis 51 is eccentric with respect to the second central axis 52 toward a point A on the opposite side of the hinge.

The operation of the above configuration will be explained below.

When opening the unopened cap 1 shown in FIG. 1, by opening the lid 7, as shown in FIG. piece 26 and engages with the detachment-side bending piece 26, a force in the opening direction O of the lid 7 acts on the detachment-side bending piece 26, and then, as shown in FIG. 8, the detachment member 16 is pulled in the opening direction O, the weakened part 15 breaks, and the release member 16 separates from the cap body 5. Then, as shown in FIG. A hole 54 is formed.

At this time, the outer periphery of the detachment side tube 20 comes into contact with the protrusion 42 of the deformation prevention member 32, so that when the lid side bending piece 38 engages with the detachment side bending piece 26, the detachment side tube 20 38 and deformation radially outward 40 (see FIG. 4) can be prevented. As a result, the detachment-side bending piece 26 does not escape outward from the cover-side bending piece 38, the cover-side bending piece 38 and the removal-side bending piece 26 are fully engaged, and the force in the opening direction O is sufficiently applied to the lid. 7 to the detachment member 16.

Further, as described above, when the lid-side bent piece 38 engages with the withdrawal-side bent piece 26 from below and the force in the opening direction O acts on the withdrawal-side bent piece 26, the withdrawal-side bent piece 26 is removed from the first withdrawal side. By coming into contact with the first inclined surface 47 of the prevention member 44, the detachment-side bending piece 26 is reversed in the withdrawal direction D (see FIG. 4), and the inner circumference of the detachment-side tube 20 and the outer circumference of the lid-side tube 31 are separated. Since it is possible to prevent the cover from slipping out from between, the lid-side bending piece 38 and the detachment-side bending piece 26 are fully engaged.

Further, as the lid-side bent piece 38 comes into contact with the second inclined surface 48 of the second removal prevention member 45, the lid-side bent piece 38 is reversed in the removal direction E (see FIG. 4), and the removal-side cylinder 20 Since it is possible to prevent the cover from slipping out from between the inner periphery of the lid side tube 31 and the outer periphery of the lid side tube 31, the lid side bent piece 38 and the detachment side bent piece 26 are fully engaged.

Further, as shown in FIG. 7, when the lid 7 of the unopened cap 1 is slightly opened, the lid side protrusion 33 is separated upward from the locking protrusion 18 at the location A on the opposite side of the hinge, and at this point , the weakened portion 15 first begins to break at a location A on the opposite side of the hinge. Thereafter, as shown in FIG. 8, when the lid 7 is further opened, the weakened portion 15 breaks continuously from the location A on the opposite side of the hinge toward the location C on the hinge side, and finally breaks at the location C on the hinge side. This results in complete rupture along the entire circumference. Thereby, as shown in FIG. 9, the detachment member 16 detaches from the cap body 5. Here, as shown in FIG. 2, since the weakened part 15 is inclined diagonally upward at a predetermined angle B at the location A on the opposite side of the hinge, the resistance when the weakened part 15 first breaks is reduced, and the weakened part 15 can be broken smoothly.

In the embodiment described above, the lid-side tube 31 is used as an example of the lid-side insert, but it is not limited to a member having a cylindrical structure, and may be a member having a cylindrical structure.

(Second embodiment)
The second embodiment will be described below. Note that the same members as those in the first embodiment described above will be denoted by the same reference numerals, and detailed explanations will be omitted.

As shown in FIGS. 10 and 11, the detachment side tube 20 includes a tube body 25 and a detachment side bent piece 26 formed at the tip of the tube body 25 over the entire circumference. The detachment side bent piece 26 is folded back from diagonally upward to diagonally downward, and is bent toward the outer circumferential side of the cylinder body 25.

The lid 7 includes a circular top plate portion 28, a cylindrical skirt portion 29 hanging from the outer peripheral edge of the top plate portion 28, a cylindrical seal member 30, and a seal member 30 that fits externally into the detachable side cylinder 20 in a closed state. It has a lid side cylinder 31 and a deformation prevention member 32.

The lid-side tube 31 includes a tube body 37 provided on the top plate 28 and a lid-side bent piece 38 formed at the tip of the tube body 37 over the entire circumference. When the lid 7 is closed, the lid-side bent piece 38 is folded back from diagonally downward to diagonally upward, and is bent toward the inner peripheral side of the cylinder body 37.

When opening the lid 7, the lid-side bending piece 38 engages with the removal-side bending piece 26 in the opening direction O (from bottom to top). Further, the deformation prevention member 32 is a member for preventing the detachment side tube 20 from deforming inward in the radial direction 55 when the cover side bending piece 38 engages with the detachment side bending piece 26, It has a cylindrical portion 41 provided on the top plate portion 28 and arranged radially inside the tube 31, and a plurality of protrusions 42 provided on the outer periphery of the cylindrical portion 41.

The cylindrical portion 41 is inserted into the detachment side cylinder 20. Further, the protrusions 42 protrude radially outward from the outer circumferential surface of the cylindrical portion 41 and are formed at a plurality of locations in the circumferential direction.

The detachment side bent piece 26 and the lid side bent piece 38 are located between the outer circumference of the detachment side tube 20 and the inner circumference of the cover side tube 31.

When opening the lid 7, a plurality of pieces prevent the detachment-side bending piece 26 from reversing in the withdrawal direction D opposite to the bending direction and slipping out from between the outer periphery of the detachment-side cylinder 20 and the inner periphery of the lid-side cylinder 31. The first slip-off prevention member 44 is provided on the inner periphery of the lid-side cylinder 31, and the lid-side bent piece 38 is reversed in the withdrawal direction E, which is opposite to the bending direction, to connect with the outer periphery of the removal-side cylinder 20. A plurality of second slip-off prevention members 45 are provided on the outer periphery of the removal side tube 20 to prevent the second detachment prevention members 45 from slipping out from between the inner circumference of the lid side tube 31.

The first slip-off prevention members 44 are provided at a plurality of locations in the circumferential direction of the lid side tube 31 and protrude radially inward from the inner circumferential surface of the lid side tube 31. Further, a first inclined surface 47 is formed at the lower end (tip) of the first slip-off prevention member 44 and is inclined upward from the inner circumferential surface of the lid-side cylinder 31 toward the radially inner side of the lid-side cylinder 31. There is.

Further, the second detachment prevention members 45 are provided at a plurality of locations in the circumferential direction of the detachment side cylinder 20 and protrude radially outward from the outer circumferential surface of the detachment side cylinder 20. Further, a second inclined surface 48 is formed at the upper end (tip) of the second slip-off prevention member 45, which is inclined downward from the outer circumferential surface of the detachment side cylinder 20 toward the radially outer side of the detachment side cylinder 20. .

The operation of the above configuration will be explained below.

When opening the unopened cap 1, by opening the lid 7, the lid-side bent piece 38 is inserted from below between the outer periphery of the detachment-side cylinder 20 and the detachment-side bent piece 26, and is inserted into the detachable-side bent piece 26. When engaged, a force in the opening direction O of the lid 7 acts on the detachment side bent piece 26, the detachment member 16 is pulled in the opening direction O, the weakened portion 15 is broken, and the detachment member 16 is detached from the cap body 5. Thus, a spout hole 54 is formed in the bottom portion 23 of the spout tube 10 of the cap body 5.

At this time, the inner circumference of the detachment side tube 20 comes into contact with the protrusion 42 of the deformation prevention member 32, so that when the lid side bending piece 38 engages with the detachment side bending piece 26, the detachment side tube 20 is bent on the lid side. It can be prevented from being pushed by the piece 38 and deforming radially inward 55 (see FIG. 11). As a result, the breakaway side bending piece 26 does not escape inward from the lid side bending piece 38, the cover side bending piece 38 and the breakaway side bending piece 26 are fully engaged, and the force in the opening direction O is sufficiently applied to the lid. 7 to the detachment member 16.

Further, as described above, when the lid-side bent piece 38 engages with the withdrawal-side bent piece 26 from below and the force in the opening direction O acts on the withdrawal-side bent piece 26, the withdrawal-side bent piece 26 is removed from the first withdrawal side. By coming into contact with the first inclined surface 47 of the prevention member 44, the detachment side bending piece 26 is reversed in the detachment direction D and is prevented from coming out from between the outer periphery of the detachment side tube 20 and the inner circumference of the lid side tube 31. Since this can be prevented, the lid-side bending piece 38 and the detachment-side bending piece 26 are fully engaged.

Further, as the lid-side bent piece 38 comes into contact with the second inclined surface 48 of the second removal prevention member 45, the lid-side bent piece 38 is reversed in the removal direction E, and the outer periphery of the removal-side cylinder 20 and the lid side Since it is possible to prevent the cover from slipping out from between the inner periphery of the cylinder 31, the lid-side bending piece 38 and the detachment-side bending piece 26 are fully engaged.

1 Cap 2 Container 5 Cap body 6 Hinge 7 Lid 10 Spout tube 15 Weakened portion 16 Removal member 20 Removal side tube 26 Removal side bent piece 31 Lid side tube (lid side insert)
32 Deformation prevention member 38 Lid side bending piece 44 First withdrawal prevention member 45 Second withdrawal prevention member 54 Spout hole A Opposite side of hinge D, E Removal direction O Opening direction

Claims (5)

It has a cap body that is attached to the container, and a lid that is attached to the cap body via a hinge so that it can be opened and closed,
the cap body has a breakaway member surrounded by a breakable weakened portion;
When the lid is opened, the weakened portion is broken and the detachable member is detached from the cap body, and a spout hole is formed in the cap body, the cap comprising:
The detachment member has a detachment side tube;
The detachment side cylinder has a detachment side bending piece bent toward the inner peripheral side,
The lid has a lid side insert that is inserted into the release side cylinder in a closed state;
The lid-side insert has a lid-side bent piece bent toward the outer periphery,
The detachment side bending piece and the cover side bending piece are located between the inner circumference of the detachment side cylinder and the outer circumference of the cover side insert body,
When opening the lid, the lid-side bent piece engages with the detachment-side bent piece in the opening direction,
The lid is provided with a deformation prevention member that prevents the withdrawal side cylinder from being deformed radially outward when the lid side bent piece engages with the withdrawal side bent piece ,
When opening the lid, a first withdrawal prevention device prevents the withdrawal side bending piece from reversing in the withdrawal direction opposite to the bending direction and slipping out from between the inner periphery of the withdrawal side cylinder and the outer periphery of the lid side insert body. A cap characterized in that the member is provided on the lid side insert . It has a cap body that is attached to the container, and a lid that is attached to the cap body via a hinge so that it can be opened and closed,
the cap body has a breakaway member surrounded by a breakable weakened portion;
When the lid is opened, the weakened portion is broken and the detachable member is detached from the cap body, and a spout hole is formed in the cap body, the cap comprising:
The detachment member has a detachment side tube;
The detachment side cylinder has a detachment side bending piece bent toward the inner peripheral side,
The lid has a lid insert that is inserted into the release cylinder in a closed state;
The lid-side insert has a lid-side bent piece bent toward the outer periphery,
The detachment side bending piece and the cover side bending piece are located between the inner circumference of the detachment side cylinder and the outer circumference of the cover side insert body,
When opening the lid, the lid-side bent piece engages with the detachment-side bent piece in the opening direction,
The lid is provided with a deformation prevention member that prevents the withdrawal side cylinder from being deformed radially outward when the lid side bent piece engages with the withdrawal side bent piece,
When opening the lid, a second withdrawal prevention device prevents the lid-side bending piece from reversing in the withdrawal direction opposite to the bending direction and slipping out from between the inner periphery of the withdrawal-side cylinder and the outer periphery of the lid-side insert body. A cap characterized in that a member is provided on a detachable side tube . It has a cap body that is attached to the container, and a lid that is attached to the cap body via a hinge so that it can be opened and closed,
the cap body has a breakaway member surrounded by a breakable weakened portion;
When the lid is opened, the weakened portion is broken and the detachable member is detached from the cap body, and a spout hole is formed in the cap body, the cap comprising:
The detachment member has a detachment side tube;
The detachment side cylinder has a detachment side bending piece bent toward the outer circumferential side,
The lid has a lid side cylinder that is fitted onto the detachable side cylinder in a closed state,
The lid-side cylinder has a lid-side bent piece bent toward the inner circumference,
The detachment side bent piece and the cover side bent piece are located between the outer periphery of the detachment side cylinder and the inner periphery of the cover side cylinder,
When opening the lid, the lid-side bent piece engages with the detachment-side bent piece in the opening direction,
The lid is provided with a deformation prevention member that prevents the withdrawal side cylinder from deforming inward in the radial direction when the lid side bent piece engages with the withdrawal side bent piece,
When opening the lid, the first withdrawal prevention member prevents the withdrawal side bending piece from reversing in the withdrawal direction opposite to the bending direction and slipping out from between the outer periphery of the withdrawal side cylinder and the inner periphery of the lid side cylinder. A cap characterized in that it is provided on the lid side tube . It has a cap body that is attached to the container, and a lid that is attached to the cap body via a hinge so that it can be opened and closed,
the cap body has a breakaway member surrounded by a breakable weakened portion;
When the lid is opened, the weakened portion is broken and the detachable member is detached from the cap body, and a spout hole is formed in the cap body, the cap comprising:
The detachment member has a detachment side tube;
The detachment side cylinder has a detachment side bending piece bent toward the outer circumferential side,
The lid has a lid side cylinder that is fitted onto the detachable side cylinder in a closed state,
The lid-side cylinder has a lid-side bent piece bent toward the inner circumference,
The detachment side bent piece and the cover side bent piece are located between the outer periphery of the detachment side cylinder and the inner periphery of the cover side cylinder,
When opening the lid, the lid-side bent piece engages with the detachment-side bent piece in the opening direction,
The lid is provided with a deformation prevention member that prevents the withdrawal side cylinder from deforming inward in the radial direction when the lid side bent piece engages with the withdrawal side bent piece ,
A second withdrawal prevention member that prevents the lid-side bending piece from reversing in the withdrawal direction opposite to the bending direction and slipping out from between the outer periphery of the removal-side cylinder and the inner periphery of the lid-side cylinder when opening the lid. is provided on the detachment side tube . The cap body has a pouring tube,
The weakened part and the detachment member are provided in the spout cylinder,
The weakened portion is characterized by being inclined diagonally upward from the inner circumferential side of the dispensing tube toward the outer circumferential side of the dispensing member with respect to the horizontal plane at a location on the opposite side of the detachable member from the hinge. The cap according to any one of claims 1 to 4 .

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