JP7054504B2 - cap - Google Patents

Description

The present invention relates to a cap attached to the mouth of a container.

Conventionally, as a cap of this type, for example, as shown in FIG. 7, a cap body 102 attached to the mouth of the container 101 and an outer lid 104 provided on the cap body 102 via a hinge 103 are provided. be. The cap body 102 has a pouring cylinder 105 communicating with the inside of the container 101.

Further, the outer lid 104 has a lid main body 107, an inner plug 109 that opens and closes the opening 108 of the dispensing cylinder 105, and a holding portion 110 that holds the inner plug 109 in the lid main body 107. The inner plug 109 has a disk-shaped plug base 112 and a sealing ring 113 that is vertically provided from the lower surface of the plug base 112 and can be fitted into the dispensing cylinder 105.

According to this, by closing the outer lid 104 of the cap 114, the sealing ring 113 of the inner plug 109 is fitted into the pouring cylinder 105 to close the pouring cylinder 105. In this state, the outer circumference of the sealing ring 113 is in close contact with the inner circumference of the dispensing cylinder 105, so that the space between the sealing ring 113 and the dispensing cylinder 105 is sealed.

Further, as shown in FIG. 8, by opening the outer lid 104, the sealing ring 113 of the inner plug 109 is pulled out from the inside of the pouring cylinder 105 in the opening direction A, and the opening 108 of the pouring cylinder 105 is opened. Will be done.

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

Further, in a factory or the like, when a liquid such as a seasoning is filled in a container 101, the liquid may be filled in the container 101 at a high temperature for heat sterilization and sealed with a cap 114. In this case, the temperature drops after filling and the inside of the container 101 becomes decompressed.

JP-A-2017-13830

However, in the above-mentioned conventional form, as shown in FIG. 7, the container 101 is filled with the liquid, sealed with the cap 114, and then shipped from the factory. When the container is opened (hereinafter referred to as the initial opening), as shown in FIG. 8, the sealing ring 113 of the inner plug 109 is pulled out from the inside of the dispensing cylinder 105 in the opening direction A, so that immediately after the initial opening, The depressurized state in the container 101 is suddenly broken. As a result, the outside air B flows into the container 101 at once through the gap between the pouring cylinder 105 and the sealing ring 113 of the inner plug 109, and the liquid in the container 101 is sealed between the pouring cylinder 105 and the inner plug 109 by the reaction. There is a problem that the container 101 is blown out to the outside through the gap with the ring 113.

It is an object of the present invention to provide a cap capable of preventing the liquid in the container from spilling to the outside at the time of initial opening.

In order to achieve the above object, the first invention is a cap having a cap body attached to the mouth of the container and an outer lid provided on the cap body via a hinge.
The cap body has a pouring tube that communicates inside the container.
The outer lid has a lid main body, an inner plug that opens and closes the opening of the dispensing cylinder, and a holding portion that holds the inner plug in the lid main body.
The inner plug has an insertion part that is inserted into the dispensing tube with the outer lid closed.
The insertion portion has a sealing portion that is in close contact with the upper part of the inner circumference of the dispensing cylinder, and an extension portion that extends from the sealing portion toward the back of the dispensing cylinder.
With the outer lid closed, a predetermined gap is formed between the upper outer circumference of the extension and the lower inner circumference of the dispenser.
When the outer lid is opened, the extension portion abuts on the inner circumference of the dispensing cylinder while the insertion portion of the inner plug is ejected from the dispensing cylinder in the opening direction.

According to this, at the time of initial opening, by opening the outer lid of the cap, the insertion portion of the inner plug is removed from the inside of the pouring cylinder in the opening direction. At this time, first, when the outer lid starts to open, the sealing portion of the inner plug is separated from the inside of the pouring cylinder in the opening direction, and the seal between the outer periphery of the sealing portion and the inner circumference of the pouring cylinder is sealed. Is released, a slight gap is formed between the outer circumference of the insertion portion of the inner plug and the inner circumference of the pouring cylinder, and the outside air flows into the container through this gap. At this time, since the extension portion of the inner plug remains in the pouring cylinder, the extension portion of the inner plug acts as a resistance and the inflow of outside air becomes slow.

Immediately after that, when the opening angle of the outer lid in the opening direction increases, the extension of the inner plug comes into contact with the inner circumference of the dispensing cylinder, which increases the resistance when opening the outer lid and temporarily opens the outer lid. It becomes a half-open state, and the extension of the inner plug acts as a resistance, and the inflow of outside air is maintained in a slow state.

After that, when the outer lid is further opened in the opening direction, since the outside air has already flowed into the container, it is possible to prevent the outside air from flowing into the container at once, and the liquid in the container flows into the pouring cylinder and the inner plug. It is possible to prevent the container from being blown out to the outside of the container through the gap between the container and the insertion portion.

In addition, by gripping the container with an excessive force, an excessive external force acts on the container, and even if the liquid in the container is about to be ejected, the extension of the inner plug remaining in the pouring cylinder. Prevents the ejection of liquid.

In the cap in the second invention, the tip of the extension portion of the inner plug penetrates deeper than the inner end of the pouring cylinder with the outer lid closed.

According to this, at the time of initial opening, by opening the outer lid of the cap, the tip portion of the extension portion of the inner plug abuts on the inner end portion of the inner circumference of the dispensing cylinder, so that the resistance when opening the outer lid is increased. In addition, it temporarily becomes a half-open state, and the extension of the inner plug acts as a resistance, and the inflow of outside air is maintained in a slow state.

The cap in the third aspect of the present invention has an extension portion in the shape of a cylinder having a hollow portion formed inside.

According to this, the rigidity of the extension portion is reduced, and the extension portion is easily deformed. Therefore, at the time of initial opening, by opening the outer lid of the cap, the extension part of the inner plug abuts on the inner circumference of the spouting cylinder and then slightly deforms in the abutted state to pour out. It is smoothly removed from the cylinder.

In the cap in the fourth invention, the inner plug is held in the holding portion in a state where the inner plug can rattle.

According to this, at the time of initial opening, by opening the outer lid of the cap, the extension part of the inner plug abuts on the inner circumference of the spouting cylinder and then rattles in the abutted state. It is pulled out smoothly.

As described above, according to the present invention, it is possible to prevent the liquid in the container from being blown out to the outside at the time of initial opening.

It is sectional drawing of the cap in embodiment of this invention, and shows the state which the outer lid is closed. The same is a cross-sectional view of the cap, showing a state in which the outer lid is slightly opened. The same is a cross-sectional view of the cap, showing a state in which the outer lid is further opened. The same is a cross-sectional view of the cap, showing a state in which the outer lid is further opened. The same is a cross-sectional view of the cap, showing a state in which the outer lid is further opened. It is a plan view of the cap, and shows a state where the outer lid is opened. It is sectional drawing of the conventional cap, and shows the state which the outer lid is closed. The same is a cross-sectional view of the cap, showing a state in which the outer lid is slightly opened.

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

As shown in FIG. 1, reference numeral 1 denotes a resin cap attached to a container 2 such as a PET bottle. The container 2 is filled with a liquid 3 (content liquid) such as a seasoning.

The cap 1 has a cap main body 10 attached to the mouth 4 of the container 2 and an outer lid 12 provided on the cap main body 10 via a hinge 11.

The cap main body 10 has a cylindrical body portion 14, a circular top plate portion 15 provided on the upper portion of the tip of the body portion 14, and a pouring cylinder 16 communicating with the inside of the container 2. A groove-shaped fitting portion 18 having an open lower portion is formed on the body portion 14 over the entire circumference, and the mouth portion 4 of the container 2 is fitted into the fitting portion 18 and mounted. The dispensing cylinder 16 is a cylindrical member, and is formed so as to project upward from the top plate portion 15.

The outer lid 12 has a lid main body 20, an inner plug 22 for opening and closing the opening 21 in the dispensing cylinder 16, and a holding cylinder 23 (an example of a holding portion) for holding the inner plug 22 in the lid main body 20. ing. The lid main body 20 has a circular lid plate portion 26 and an annular peripheral wall portion 27 provided on the peripheral edge of the lid plate portion 26.

Locking pieces 45 and 46 are formed on the top plate portion 15 of the cap body 10 and the peripheral wall portion 27 of the outer lid 12. As shown in FIG. 1, when the outer lid 12 is closed, the locking piece 46 is locked to the locking piece 45, so that the outer lid 12 is fixed at the closed position S.

The holding cylinder 23 is a cylindrical member and is provided on the inner surface of the lid plate portion 26. The holding cylinder 23 has a drop-out prevention protrusion 29 protruding inward in the radial direction on the inner circumference of the tip opening thereof over the entire circumference.

The inner plug 22 is loosely fitted in the holding cylinder 23 and is held in a state in which it can rattle in the radial direction R and the height direction H (vertical direction). The inner plug 22 has an insertion portion 31 to be inserted into the dispensing cylinder 16 with the outer lid 12 closed, and a flange portion 32 provided at one end (upper end) of the insertion portion 31 over the entire circumference. ing.

The insertion portion 31 is a cylindrical member having both upper and lower ends open, and has a sealing portion 33 that is in close contact with the inner circumference of the dispensing cylinder 16 and a sealing portion 33 to the back of the dispensing cylinder 16 (inside of the container 2). ) With an extension 34.

With the outer lid 12 closed, a predetermined gap 35 is formed over the entire circumference between the outer circumference of the extension portion 34 and the inner circumference of the dispensing cylinder 16. The outer diameter of the extension portion 34 is smaller than the inner diameter of the dispensing cylinder 16, and the outer peripheral surface of the extension portion 34 is slightly inclined toward the back (downward) of the dispensing cylinder 16 so as to reduce the diameter.

Further, in the insertion portion 31, a circular closing plate 36 for partitioning the boundary between the sealing portion 33 and the extension portion 34 is provided. The extension portion 34 has a hollow portion 37 partitioned by the closing plate 36 inside.

The flange portion 32 is formed so as to project radially outward from one end (upper end) of the sealing portion 33. The flange portion 32 engages with the drop-out prevention protrusion 29 to prevent the inner plug 22 from falling off from the holding cylinder 23.

Further, on the lower surface of the flange portion 32, a recess 39 having an open lower portion is formed over the entire circumference. With the outer lid 12 closed, the tip portion of the dispensing cylinder 16 is fitted into the recess 39, and the tip portion 34a of the extension portion 34 of the inner plug 22 is the back end portion 16a and the top plate portion 15 of the dispensing cylinder 16. Rush into the back (downward).

Further, as shown in FIG. 3, when the outer lid 12 is opened, the tip portion 34a of the extension portion 34 is injected while the insertion portion 31 of the inner plug 22 is ejected from the dispensing cylinder 16 in the opening direction A. It abuts on the inner peripheral surface of the inner peripheral surface of the inner peripheral surface 16a (lower end portion) of the ejection cylinder 16.

As shown in FIG. 1, the dispensing cylinder 16, the holding cylinder 23, and the inner plug 22 are eccentric to a position away from the hinge 11 with respect to the axial center 40 passing through the center of the cap body 10.

Hereinafter, the operation in the above configuration will be described.

At the time of initial opening, by opening the outer lid 12 from the unopened state shown in FIG. 1, as shown in FIG. 5, the insertion portion 31 of the inner plug 22 together with the outer lid 12 is opened from the inside of the pouring cylinder 16. It is escaped to A. At this time, first, as shown in FIG. 2, when the outer lid 12 begins to open, the sealing portion 33 of the inner plug 22 separates from the inside of the dispensing cylinder 16 in the opening direction A, and the sealing portion 33 The seal between the outer circumference and the inner circumference of the dispensing cylinder 16 is released, and a slight gap is formed between the outer circumference of the insertion portion 31 of the inner plug 22 and the inner circumference of the dispensing cylinder 16 and passes through this gap. The outside air B flows into the container 2. At this time, since the extension portion 34 of the inner plug 22 remains in the pouring cylinder 16, the extension portion 34 acts as a resistance and the inflow of the outside air B becomes gentle.

Immediately after that, as shown in FIG. 3, when the opening angle α of the outer lid 12 in the opening direction A increases, the tip portion 34a of the extension portion 34 hits the inner peripheral surface of the back end portion 16a of the dispensing cylinder 16. Since they come into contact with each other, the resistance when opening the outer lid 12 increases, the outer lid 12 temporarily becomes a half-open state, the extension portion 34 becomes a resistance, and the inflow of the outside air B is maintained in a slow state.

After that, as shown in FIG. 4, when the outer lid 12 is further opened in the opening direction A, the outside air B has already flowed into the container 2, so that the outside air B is prevented from flowing into the container 2 at once. It is possible to prevent the liquid 3 in the container 2 from being blown out to the outside of the container 2 through the gap between the pouring cylinder 16 and the insertion portion 31 of the inner plug 22.

Further, by gripping the container 2 with an excessive force or the like, an excessive external force acts on the container 2, and even if the liquid 3 in the container 2 is about to be ejected, it remains in the pouring cylinder 16. The extension 33 of the inner plug 22 prevents the liquid 3 from being ejected.

Further, since the extension portion 34 is a cylindrical member having a hollow portion 37 inside, the rigidity of the extension portion 34 is lowered, and the extension portion 34 is easily elastically deformed. Therefore, as shown in FIG. 3, the tip portion 34a of the extension portion 34 abuts on the inner peripheral surface of the inner peripheral surface of the back end portion 16a of the dispensing cylinder 16, and then is slightly elastically deformed and the inner plug is in the abutted state. As the 22 rattles, as shown in FIG. 5, it is smoothly ejected from the dispenser cylinder 16.

In this way, the outer lid 12 was opened to a position where the insertion portion 31 of the inner plug 22 was completely removed from the inside of the dispensing cylinder 16 in the opening direction A, and the opening 21 of the dispensing cylinder 16 was fully opened. By tilting the container 2 in this state, the liquid 3 in the container 2 is poured out through the opening 21 of the pouring cylinder 16.

After that, as shown in FIG. 1, by closing the outer lid 12 to the closed position S, the insertion portion 31 of the inner plug 22 is inserted into the dispenser cylinder 16, and the opening portion 21 of the dispenser cylinder 16 is closed. .. At this time, the tip end portion of the dispensing cylinder 16 is fitted into the recess 39 of the inner plug 22, and the tip portion 34a of the extension portion 34 of the inner plug 22 is larger than the back end portion 16a and the top plate portion 15 of the dispensing cylinder 16. Rush into the wife (downward).

In this state, since the outer peripheral surface of the sealing portion 33 of the inner plug 22 is in close contact with the inner peripheral surface of the pouring cylinder 16 over the entire circumference, the outer peripheral surface of the sealing portion 33 and the inner peripheral surface of the pouring cylinder 16 The space is sealed to prevent the liquid 3 in the container 2 from leaking to the outside from the pouring cylinder 16.

As shown in FIG. 1, when the outer lid 12 is closed to the closed position S, the inner plug 22 has the sealing portion 33 in close contact with the dispensing cylinder 16 and the flange portion 32 of the outer lid 12. Since it is in contact with the lid plate portion 26, it is fixed without rattling.

In the above embodiment, as shown in FIG. 1, when the outer lid 12 is closed to the closed position S, the flange portion 32 of the inner plug 22 is in contact with the lid plate portion 26 of the outer lid 12, but the collar portion A slight gap may be formed between the 32 and the lid plate portion 26.

1 Cap 2 Container 4 Mouth 10 Cap body 11 Hinge 12 Outer lid 16 Outlet cylinder 16a Back end of injection cylinder 20 Lid body 21 Opening 22 Inner plug 23 Holding cylinder (holding part)
31 Insertion part 33 Sealing part 34 Extension part 34a Tip part of extension part 35 Gap 37 Hollow part A Opening direction

Claims (4)

A cap having a cap body attached to the mouth of the container and an outer lid provided on the cap body via a hinge.
The cap body has a pouring tube that communicates inside the container.
The outer lid has a lid main body, an inner plug that opens and closes the opening of the dispensing cylinder, and a holding portion that holds the inner plug in the lid main body.
The inner plug has an insertion part that is inserted into the dispensing tube with the outer lid closed.
The insertion portion has a sealing portion that is in close contact with the upper part of the inner circumference of the dispensing cylinder, and an extension portion that extends from the sealing portion toward the back of the dispensing cylinder.
With the outer lid closed, a predetermined gap is formed between the upper outer circumference of the extension and the lower inner circumference of the dispenser.
A cap characterized in that when the outer lid is opened, the extension portion abuts on the inner circumference of the dispensing cylinder while the insertion portion of the inner plug is ejected from the dispensing cylinder in the opening direction. The cap according to claim 1, wherein the tip of the extension portion of the inner plug penetrates deeper than the inner end of the dispensing cylinder with the outer lid closed. The cap according to claim 1 or 2, wherein the extension portion has a tubular shape having a hollow portion formed inside. The cap according to any one of claims 1 to 3, wherein the inner plug is held in a holding portion in a state where it can rattle.

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