JP2021109702A - cap - Google Patents

Abstract

To provide a cap that can reduce the force required when starting to open the lid when opening an un-opened cap.SOLUTION: A cap 1 has a cap body 5 attached to a container 2 and a lid 7 that can be opened and closed on the cap body 5 via a hinge 6, the cap body 5 has a detachment member 15 surrounded by a weakened part 14 whose circumference can be broken, the lid 7 has a holding mechanism 38 for holding the detachment member 15, opening the lid 7 causes the detachment member 15 to be pulled in the opening direction O of the lid 7 via the holding mechanism 38, the weakened part 14 is broken, and the detachment member 15 is detached from the cap body 5 and an outlet hole is formed on the cap body 5. The weakened part 14 begins to break with a time delay from the time when the lid 7 begins to open.SELECTED DRAWING: Figure 7

Description

The present invention relates to a cap having a cap body attached to a container and a lid attached to the cap body so as to be openable and closable via a hinge.

Conventionally, as a cap of this type, for example, as shown in FIG. 11, there is a cap main body 102 attached to the container 101 and a lid 104 attached to the cap main body 102 via a hinge 103 so as to be openable and closable. ..

The cap body 102 has a detaching member 106 surrounded by a weakening portion 105 having a breakable periphery. The cap body 102 is provided with a circular locking ring 107 that is fitted into the inner circumference of the lid 104 with the lid 104 closed to lock the lid 104. Further, the lid 104 has a holding mechanism 108 for holding the detaching member 106.

According to this, when the lid 104 of the unopened cap is opened, the lid 104 is disengaged from the locking ring 107, and the disengagement member 106 is pulled in the opening direction O of the lid 104 via the holding mechanism 108. As shown, the weakened portion 105 is broken and the detaching member 106 is detached from the cap main body 102, and an injection hole 109 is formed in the cap main body 102. At this time, the detaching member 106 detached from the cap body 102 is held on the lid 104 side by the holding mechanism 108.

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

Patent No. 6234106

However, in the above-mentioned conventional form, when the lid 104 of the unopened cap 100 is opened, the timing at which the lid 104 starts to open and the timing at which the weakened portion 105 starts to break coincide with each other, so that the force required when starting to open the lid 104 increases. There is a problem such as

An object of the present invention is to provide a cap capable of reducing the force required when opening the lid of an unopened cap when the lid is started to be opened.

In order to achieve the above object, the first invention has a cap body attached to a container and a lid that is openably and closably attached to the cap body via a hinge.
The cap body has a detaching member surrounded by a fragile weakening part.
The lid has a holding mechanism to hold the detaching member,
By opening the lid, the detaching member is pulled in the opening direction of the lid via the holding mechanism, the weakened portion is broken, the detaching member is detached from the cap body, and an injection hole is formed in the cap body. hand,
The weakened part starts to break with a time delay from the time when the lid starts to open.

According to this, when opening the lid of the unopened cap, the timing at which the lid starts to open and the timing at which the weakened portion starts to break are different, so that the force required when opening the lid can be reduced.

In the cap according to the second invention, the cap body is provided with a locking ring that is fitted into the inner circumference of the lid with the lid closed to lock the lid.
The weakened portion begins to break after the lid begins to open and separates from a part of the locking ring in the opening direction.

According to this, when opening the lid of the unopened cap, the timing when the lid is released from a part of the locking ring and the timing when the weakened portion starts to break are different, so that the force required when starting to open the lid is reduced. Can be done.

In the cap according to the third invention, the holding mechanism has an inner plug that engages with the detaching member and a holding cylinder that holds the inner plug.
The holding cylinder is provided on the lid,
The inner plug is provided in the holding cylinder and is held so as to be movable in the axial direction of the holding cylinder.
The holding cylinder is provided with an engaging portion that can be engaged with the inner plug from the opening direction of the lid.
With the lid closed, the engaging part is disengaged from the inner plug.
The engaging portion engages with the inner plug from the opening direction of the lid with a time delay from the time when the lid starts to open.

According to this, when opening the lid of the unopened cap, the engaging part engages with the inner plug from the opening direction of the lid with a time delay from the time when the lid starts to open, so that the inner plug is inside the holding cylinder. It moves in the opening direction together with the lid while being held by. As a result, the detaching member engaged with the inner plug is pulled in the opening direction, and the weakened portion begins to break.

The cap in the fourth invention is provided with a fixing portion in the holding cylinder for fixing the inner plug engaged with the detaching member after being detached from the cap body in the axial direction of the holding cylinder.
When the lid is closed after the detaching member is detached from the cap body, the detaching member comes into contact with the weakened portion of the cap body after breaking from the closing direction and is lifted together with the inner plug, and the inner plug moves in the holding cylinder in the axial direction. It moves and is fixed by a fixed part.

According to this, when the lid is closed after the detaching member is detached from the cap body, the inner plug moves in the holding cylinder in the axial direction and is fixed by the fixing portion. Therefore, even if the lid is further opened and closed thereafter, the inner plug is fixed by the fixing portion in the holding cylinder, so that the inner plug does not move around inadvertently in the holding cylinder.

In the cap according to the fifth invention, the cap body has a pouring cylinder and a closing plate that closes the inside of the pouring cylinder.
The weakened portion and the detaching member are provided inside the pouring cylinder and on the closing plate.
The closing plate has an inclined surface having a downward slope from the inner surface of the pouring cylinder toward the release member at a position opposite to the hinge with respect to the release member.

According to this, when the liquid in the container is poured out from the pouring cylinder with the lid open and then the pouring cylinder is turned upward, the liquid in the pouring cylinder is placed on the inclined surface of the closing plate. Since the liquid flows down from the inner surface of the pouring cylinder toward the pouring hole, the amount of liquid remaining in the pouring cylinder can be reduced.

In the cap according to the sixth invention, the cap body has a pouring cylinder and a closing plate that closes the inside of the pouring cylinder.
The weakened portion and the detaching member are provided inside the pouring cylinder and on the closing plate.
The closing plate has a bent portion that is bent in the opening direction of the lid toward the weakened portion at a portion opposite to the hinge with respect to the detaching member.

According to this, by opening the lid of the unopened cap, the release member is pulled in the opening direction of the lid via the holding mechanism, the weakened portion is broken, the release member is separated from the closing plate, and the closing plate is poured. A hole is formed. At this time, since the bent portion of the closing plate is bent toward the weakened portion in the opening direction of the lid, a force at the time of opening acts on the weakened portion at a portion opposite to the hinge with respect to the detaching member. It is easy to break the weakened portion smoothly and surely from this portion.

As described above, according to the present invention, when the lid of the unopened cap is opened, the timing at which the lid starts to open and the timing at which the weakened portion starts to break are different, so that the force required when starting to open the lid can be reduced. ..

It is sectional drawing of the cap in embodiment of this invention, and shows the unopened state. The same is a plan view when the lid of the cap is opened, and shows a state in which the detaching member is not detached and remains on the cap body side. It is a partially enlarged cross-sectional view of the lid of the cap. The same is a cross-sectional view of the inner plug of the cap. It is a partially enlarged cross-sectional view of the detaching member of the cap. The same is a cross-sectional view of the cap, showing a state in which the lid has begun to open from an unopened state. It is a cross-sectional view of the cap, and further shows a state in which the lid is opened. The same is a cross-sectional view of the cap, showing a state in which the lid is completely opened. The same is a cross-sectional view of the cap, showing a state in which the lid is closed after opening. It is a cross-sectional view of the cap, and then shows a state in which the lid is opened. It is sectional drawing of the conventional cap, and shows the unopened state. The same is a cross-sectional view of the cap, showing a state in which the lid is opened from an unopened state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)
As shown in FIGS. 1 and 2, reference numeral 1 denotes a synthetic resin cap attached to a container 2 such as a PET bottle. A liquid (an example of the contents) is stored in the container 2.

The cap 1 has a cap main body 5 attached to the container 2 and a lid 7 attached to the cap main body 5 via a hinge 6 so as to be openable and closable.

The cap body 5 includes a mounting portion 10 attached to the mouth portion 3 of the container 2, a circular pouring cylinder 11 provided in the mounting portion 10, and a circular closing plate 12 for closing the inside of the pouring cylinder 11. It has a detaching member 15 surrounded by a weakening portion 14 having a breakable periphery.

The mounting portion 10 includes a circular outer cylinder portion 17, a circular inner cylinder portion 18, a mounting groove 19 formed between the outer cylinder portion 17 and the inner cylinder portion 18 over the entire circumference, and an outer cylinder portion 17. It has a top wall portion 20 provided over the entire circumference between the upper end portion and the upper end portion of the inner cylinder portion 18. The cap body 5 is attached to the container 2 by fitting the mouth portion 3 of the container 2 into the attachment groove 19 from below.

The pouring cylinder 11 is provided in the mounting portion 10 with the pouring outlet 22 facing upward. The blocking plate 12 is provided inside the dispensing cylinder 11. The weakening portion 14 and the detaching member 15 are provided inside the dispensing cylinder 11 and on the closing plate 12.

As shown in FIGS. 1, 2, and 5, the detaching member 15 has a cylindrical portion 24 whose upper end opens, a bottom plate portion 25 that closes the lower end of the cylindrical portion 24, and a hinge 6 from the lower outer circumference of the cylindrical portion 24. It has an inclined plate portion 26 that is inclined downward, and a protruding portion 27 that protrudes downward from the peripheral edge of the bottom plate portion 25. The protruding portion 27 is extended outward in the radial direction toward the lower part. Further, on the upper outer circumference of the cylindrical portion 24, a disengagement side engaging portion 29 projecting outward in the radial direction is formed over the entire circumference.

The closing plate 12 faces the inclined surface 30 having a downward slope from the inner surface of the dispensing cylinder 11 toward the detaching member 15 and the weakening portion 14 at the portion A 180 ° opposite to the hinge 6 with respect to the detaching member 15. It has a bent portion 31 that is bent in the opening direction O (obliquely upward direction) of the lid 7. The thickness of the weakened portion 14 is thinner than the thickness of the closing plate 12 and the thickness of the inclined plate portion 26, and the thickness of the bent portion 31 gradually decreases toward the weakened portion 14.

As shown in FIGS. 1 to 3, the lid 7 is detached from the circular top plate portion 35, the cylindrical skirt portion 36 hanging from the outer peripheral edge of the top plate portion 35, and the cylindrical seal member 37. It has a holding mechanism 38 that holds the member 15.

The top wall portion 20 of the cap body 5 is provided with a circular locking ring 40 that is fitted into the inner circumference of the skirt portion 36 of the lid 7 with the lid 7 closed to lock the lid 7. The locking ring 40 has a locking protrusion 41 protruding outward in the radial direction at the tip end portion.

The holding mechanism 38 has an inner plug 43 that engages with the detaching member 15, and a circular holding cylinder 44 that holds the inner plug 43. The holding cylinder 44 is provided on the top plate portion 35 of the lid 7.

As shown in FIGS. 1, 2 and 4, the inner plug 43 is provided in the holding cylinder 44 and is movably held in the axial direction B (vertical direction) of the holding cylinder 44. The inner plug 43 has a circular top plate 46 and outer and inner cylindrical portions 47 and 48 provided on the top plate 46. The top plate 46 is loosely fitted in the holding cylinder 44.

An insertion space 49 having an open lower portion is formed between the outer cylindrical portion 47 and the inner cylindrical portion 48 over the entire circumference. Further, on the lower inner circumference of the outer cylindrical portion 47, an inner plug side engaging portion 51 projecting inward in the radial direction is formed over the entire circumference.

The cylindrical portion 24 of the disengagement member 15 is inserted into the insertion space 49 of the inner plug 43 from below, and the disengagement side engaging portion 29 and the inner plug side engaging portion 51 engage with each other in the axial direction B of the holding cylinder 44. ing.

On the lower inner circumference of the holding cylinder 44, a holding cylinder side engaging portion 53 that can be engaged with the outer peripheral edge of the top plate 46 of the inner plug 43 from the opening direction O (direction from bottom to top) is formed over the entire circumference. There is. The holding cylinder side engaging portion 53 projects radially inward from the lower inner circumference of the holding cylinder 44.

Further, in the holding cylinder 44, a fixing portion 55 for fixing the inner plug 43 engaged with the detaching member 15 after being detached from the cap body 5 in the axial direction B of the holding cylinder 44 is provided over the entire circumference. ing. The fixing portion 55 is a protrusion protruding inward in the radial direction from the inner circumference of the holding cylinder 44, and is located above the holding cylinder side engaging portion 53.

As shown in FIG. 1, in the unopened state (the state where the lid 7 is closed), the weakened portion 14 is not broken, and the holding cylinder side engaging portion 53 is downward from the outer peripheral edge of the top plate 46 of the inner plug 43. Has left.

The seal member 37 of the lid 7 is provided on the top plate portion 35, and is located between the holding cylinder 44 and the skirt portion 36 in the radial direction. When the lid 7 is closed, the sealing member 37 is in close contact with the inner circumference of the tip of the dispensing cylinder 11, and the space between the tip of the dispensing cylinder 11 and the lid 7 is sealed over the entire circumference.

The operation in the above configuration will be described below.

FIG. 1 shows a cross section of the unopened cap 1, in which the locking ring 40 is fitted into the inner circumference of the skirt portion 36 of the lid 7 to lock the lid 7, and the release member 15 is the weakened portion 14. The holding cylinder side engaging portion 53 is detached downward from the outer peripheral edge of the top plate 46 of the inner plug 43, and the top plate 46 of the inner plug 43 and the top plate portion 35 of the lid 7 are connected to each other. A gap 57 is formed between them, and the sealing member 37 is in close contact with the inner circumference of the tip of the dispensing cylinder 11.

When opening the lid 7 of such an unopened cap 1, first, as shown in FIG. 6, when the lid 7 starts to open in the opening direction O, the skirt portion 36 of the lid 7 becomes a part of the locking ring 40 ( That is, the member 15 is disengaged from the portion A) 180 ° opposite to the hinge 6 in the opening direction, and immediately after that, the holding cylinder side engaging portion 53 disengages from the opening direction O to the outer peripheral edge of the top plate 46 of the inner plug 43. The inner plug 43 moves in the opening direction O together with the lid 7 while being held in the holding cylinder 44. As a result, as shown in FIG. 7, the disengagement member 15 is pulled in the opening direction O in a state of being engaged with the inner plug 43 via the disengagement side engaging portion 29 and the inner plug side engaging portion 51. , The weakened portion 14 begins to break.

In this way, since the weakened portion 14 starts to break with a time delay from the time when the lid 7 starts to open, the timing when the lid 7 starts to open and the timing when the weakened portion 14 starts to break deviate from each other, and the lid 7 starts to open. The force required at times can be reduced.

The weakened portion 14 first begins to break from a portion A 180 ° opposite to the hinge 6 with respect to the detaching member 15, sequentially breaks toward the hinge 6 side, and finally to the hinge 6. The nearest point C breaks. By breaking the weakened portion 14 over the entire circumference in this way, as shown in FIG. 8, the detaching member 15 is detached from the cap main body 5, and an injection hole 58 is formed in the closing plate 12 of the cap main body 5. ..

Further, as shown in FIG. 1, since the bent portion 31 of the closing plate 12 is bent toward the weakened portion 14 in the opening direction O of the lid 7, the detaching member 15 is bent at the time of opening the lid as described above. A force at the time of opening the lid is likely to act on the weakened portion 14 at the portion A 180 ° opposite to the hinge 6, and the weakened portion 14 can be smoothly and surely broken from this portion A.

In this way, with the lid 7 open, the container 2 can be tilted to pour the liquid (contents) in the container 2 from the pouring cylinder 11 to the outside. After that, as shown in FIG. 8, when the container 2 is erected and the pouring cylinder 11 is turned upward, the liquid in the pouring cylinder 11 flows down on the inclined surface 30 of the closing plate 12 toward the pouring hole 58. Therefore, the amount of liquid remaining in the pouring cylinder 11 can be reduced.

After that, as shown in FIG. 9, when the lid 7 is closed, the protruding portion 27 of the detaching member 15 comes into contact with the weakened portion 14 after the breakage of the cap body 5 from the closing direction S (direction from top to bottom). , The release member 15 is lifted together with the inner plug 43, the inner plug 43 moves in the axial direction (upward direction) in the holding cylinder 44, and the top plate 46 of the inner plug 43 comes into contact with the top plate portion 35 of the lid 7. At the same time, it is locked and fixed to the fixing portion 55.

As a result, as shown in FIG. 10, even if the lid 7 is further opened and closed, the inner plug 43 is fixed by the fixing portion 55 in the holding cylinder 44, so that the inside of the holding cylinder 44 is carelessly fixed. It doesn't move around.

1 Cap 2 Container 3 Mouth 5 Cap body 6 Hinge 7 Lid 10 Mounting part 11 Injection cylinder 12 Closure plate 14 Weakened part 15 Detachment member 30 Inclined surface 31 Bending part 38 Holding mechanism 40 Locking ring 43 Inner plug 44 Holding cylinder 53 Holding cylinder side engaging part 55 Fixed part 58 Injection hole A Opposite side B Axial center direction O Opening direction S Closing direction

Claims (6)

It has a cap body that can be attached to the container and a lid that can be opened and closed from the cap body via a hinge.
The cap body has a detaching member surrounded by a fragile weakening part.
The lid has a holding mechanism to hold the detaching member,
By opening the lid, the detaching member is pulled in the opening direction of the lid via the holding mechanism, the weakened portion is broken, the detaching member is detached from the cap body, and an injection hole is formed in the cap body. hand,
A cap characterized in that the weakened part begins to break with a time delay from the time when the lid begins to open. A locking ring is provided on the cap body to lock the lid by being fitted to the inner circumference of the lid with the lid closed.
The cap according to claim 1, wherein the weakened portion starts to break after the lid starts to open and is separated from a part of the locking ring in the opening direction. The holding mechanism has an inner plug that engages with the detaching member and a holding cylinder that holds the inner plug.
The holding cylinder is provided on the lid,
The inner plug is provided in the holding cylinder and is held so as to be movable in the axial direction of the holding cylinder.
The holding cylinder is provided with an engaging portion that can be engaged with the inner plug from the opening direction of the lid.
With the lid closed, the engaging part is disengaged from the inner plug.
The cap according to claim 1 or 2, wherein the engaging portion engages with the inner plug from the opening direction of the lid with a time delay from the time when the lid starts to open. A fixing portion for fixing the inner plug engaged with the detaching member after detaching from the cap body in the axial direction of the holding cylinder is provided in the holding cylinder.
When the lid is closed after the detaching member is detached from the cap body, the detaching member abuts on the weakened portion after the cap body is broken from the closing direction and is lifted together with the inner plug, and the inner plug moves in the holding cylinder in the axial direction. The cap according to claim 3, wherein the cap is moved and fixed by a fixing portion. The cap body has a dispensing cylinder and a closing plate that closes the inside of the dispensing cylinder.
The weakened portion and the detaching member are provided inside the pouring cylinder and on the closing plate.
Claims 1 to claim that the closing plate has an inclined surface having a downward slope from the inner surface of the dispensing cylinder toward the release member at a position opposite to the hinge with respect to the release member. The cap according to any one of 4. The cap body has a dispensing cylinder and a closing plate that closes the inside of the dispensing cylinder.
The weakened portion and the detaching member are provided inside the pouring cylinder and on the closing plate.
Claims 1 to 5, wherein the closing plate has a bent portion that is bent in the opening direction of the lid toward the weakened portion at a portion opposite to the hinge with respect to the detaching member. The cap according to any one item.

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