JP7236923B2 - hinge cap - Google Patents

Description

The present invention relates to hinge caps.

Patent Literature 1 discloses a hinge cap that includes a fixing portion fixed to the mouth of a container body and a capped cylindrical lid body that is rotatably connected to the fixing portion around a hinge. It is The fixed part has a blocking plate that blocks the mouth, and a pull ring that is connected to the blocking plate via a thin weakened part.

JP 2016-222310 A

When opening the container having the hinge cap of Patent Document 1, the weakened portion is broken by pulling up the pull ring after rotating the lid with respect to the fixed portion. Since such an operation is performed, there is room for improvement in operability at the time of unsealing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hinge cap with improved operability when unsealed.

In order to solve the above-described problems, a hinge cap according to an aspect of the present invention includes: a fixing portion fixed to the mouth portion of a container body in which contents are stored; and a threaded member that is formed separately from the lid and the fixing portion and whose downward movement with respect to the lid is restricted, wherein the fixing portion includes the a closure plate that closes the mouth; and an inner plug portion connected to the closure plate via a weakened portion; The upper threaded portion of the threaded member is threaded to the lower threaded portion through a through hole formed in the wall.

According to the above aspect, by performing an operation to rotate the lid upward around the hinge, an upward force can be applied to the inner plug portion via the lid and the threaded member. This force can break the weakened portion, separate the inner plug from the closure plate, and release the closure of the mouth of the container body.
Thus, according to the above aspect, for example, instead of opening the inner plug after opening the lid, the inner plug can be opened in conjunction with the operation of opening the lid. Therefore, the operability at the time of opening can be improved.
In addition, since the threaded member is fixed to the inner plug portion by screwing, the threaded member is less likely to come off from the inner plug portion compared to the case where it is fixed by, for example, undercut fitting. The inner plug can be separated from the closure plate.

Here, the lid has an upper tubular portion extending downward from an opening edge of the through hole, and a support portion extending inwardly of the upper tubular portion from a lower end portion of the upper tubular portion. , The threaded member may have a head portion that abuts on the support portion.

In this case, when the lid rotates upward around the hinge, upward force can be smoothly transmitted from the support portion to the head portion. Therefore, it becomes easier to separate the inner plug portion, to which the screw member is screwed, from the closure plate, and the operability at the time of unsealing can be improved.

Further, the screwing member may have a head portion provided at the upper end portion of the upper screwing portion, and a plurality of concave portions recessed downward may be formed on the upper surface of the head portion. .

In this case, when the hinge cap is manufactured, the screwing member can be easily rotated with respect to the lid body by inserting the claw portion of the jig into the recess and rotating the jig. Therefore, the process of screwing the upper threaded portion and the lower threaded portion becomes easier, and the efficiency of manufacturing the hinge cap can be improved.

Further, the lid has a knob projecting radially outward from the top wall, and the threaded member is positioned between the knob and the hinge in a plan view. good too.

In this case, when the knob is pulled upward, the upward force acting on the threaded member can be amplified by the principle of leverage. Therefore, the operating force required for breaking the weakened portion can be reduced, and the operability at the time of unsealing can be improved.

Further, the fixing portion may have a pouring tube portion that extends upward from the closing plate and surrounds the inner plug portion.

In this case, when the inner plug portion is separated from the closing plate to open the communicating hole, the pouring cylinder portion and the inside of the container main body communicate with each other through the communicating hole. Therefore, the contents in the container main body can be discharged through the communication hole and the discharge tube portion.
Further, for example, by forming a portion that fits inside the pouring cylinder portion in the lid body, the pouring cylinder portion can be placed in a closed state even after the communication hole is opened. It becomes possible to seal the inside.

According to the aspect of the present invention, it is possible to provide a hinge cap with improved operability when unsealed.

1 is a plan view of a container provided with a hinge cap according to this embodiment; FIG. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1; It is a figure which shows the state which opened the cover of FIG.

Hereinafter, the hinge cap of this embodiment and the container provided with the hinge cap will be described based on the drawings.
As shown in FIGS. 1 and 2 , the container 1 includes a bottomed cylindrical container body 2 in which contents are contained, and a hinge cap 3 attached to the container body 2 . The hinge cap 3 includes a fixing portion 10 fixed to the mouth portion 2a of the container body 2, a capped cylindrical lid body 20 connected to the fixing portion 10 so as to be rotatable around the hinge H, the lid body 20 and A threaded member 30 formed separately from the fixing portion 10 is provided. The contents are not particularly limited, but liquids such as foods (more specifically, beverages, liquid seasonings, etc.) can be used. Each part of the hinge cap 3 is made of resin unless otherwise specified.

(direction definition)
In this embodiment, the central axis of the lid body 20 is called a cap axis O, and the direction along the cap axis O is called an up-down direction. In addition, in the vertical direction, the top wall 21 side of the lid body 20 is referred to as the upper side, and the opening portion side of the peripheral wall 22 is referred to as the lower side. Viewing from above and below is called planar view. In plan view, the direction intersecting the cap axis O is called the cap radial direction, and the direction rotating around the cap axis O is called the cap circumferential direction. In the radial direction of the cap, the direction connecting the central portion of the hinge H in the cap circumferential direction and the central portion of the knob 23 in the cap circumferential direction shown in FIG. The hinge H side in the front-rear direction is called the rear, and the knob 23 side is called the front.

As shown in FIG. 2 , the fixed portion 10 has a fixed tubular portion 11 , a closing plate 12 , a fitting tubular portion 13 , an extraction tubular portion 14 , and an inner plug portion 15 . The fixed tubular portion 11 surrounds the mouth portion 2a of the container body 2 from the outside in the cap radial direction, and is fixed to the mouth portion 2a. A fitting portion 11a that protrudes inward in the radial direction of the cap is formed on the inner peripheral surface of the fixed tubular portion 11 . The fitting portion 11a is undercut-fitted to the protrusion 2b formed on the outer peripheral surface of the mouth portion 2a, thereby restricting the upward movement of the fixed cylindrical portion 11 with respect to the container body 2. As shown in FIG.

The closing plate 12 extends inward in the radial direction of the cap from the upper end portion of the fixed tubular portion 11 . The closing plate 12 covers the opening 2a from above and closes the opening 2a. The fitting tube portion 13 extends downward from the closing plate 12 and is fitted into the mouth portion 2a. The fitting cylinder portion 13 is located inside the fixed cylinder portion 11 in the radial direction of the cap.

The pouring tube portion 14 extends upward from the closing plate 12 . The central axis of the pouring tube portion 14 is located forward of the cap axis O. As shown in FIG. The pouring tube portion 14 is formed in a tubular shape whose diameter gradually increases upward. The height of the upper end portion of the pouring tube portion 14 is uneven, and the upper end portion of the portion of the pouring tube portion 14 located on the rear side (hinge H side) is positioned on the front side (on the knob portion 23 side). lower than the upper end of the

The inner plug portion 15 is formed in a portion of the closure plate 12 located inside the pouring cylinder portion 14 . That is, the pouring tube portion 14 surrounds the inner plug portion 15 . The inner plug portion 15 is connected to the closure plate 12 via a thin weakened portion 12a. By breaking the weakened portion 12a, the inner plug portion 15 is separated from the closing plate 12 to form a communication hole 12b (see FIG. 3). The inner plug portion 15 has a disc-shaped base portion 15a in a plan view and a lower threaded portion 15b extending upward from the base portion 15a. A weakened portion 12a is provided along the entire circumference of the outer peripheral edge of the base portion 15a. Before the weakened portion 12a is broken, the communication hole 12b is closed, and the flow of air and contents through the communication hole 12b is blocked.

A male threaded portion is formed on the outer peripheral surface of the lower threaded portion 15b. The male screw portion is formed in the lower threaded portion 15b from the central portion in the vertical direction to the lower end portion. As a result, when screwing the screwing member 30 onto the lower screwing portion 15b, the number of times the screwing member 30 is rotated can be reduced, and the manufacturing efficiency of the hinge cap 3 can be improved. However, the male threaded portion may be formed over the entire length of the lower threaded portion 15b in the vertical direction. A small screw portion 15c is formed on the lower surface of the screw thread of the lower threaded portion 15b.

The lid body 20 has a top wall 21 , a peripheral wall 22 , a knob portion 23 , an upper tubular portion 24 , a support portion 25 and a lower tubular portion 26 .
As shown in FIG. 1, the top wall 21 is formed in a disc shape in plan view. The knob 23 protrudes forward from the top wall 21 . As shown in FIG. 2, the knob portion 23 is inclined upward gradually toward the front. This facilitates the operation of pinching and moving the knob 23 upward. The lower surface of the knob 23 is formed with an uneven shape for slip prevention. The uneven shape may be formed on the upper surface of the knob portion 23, or may be formed on both the upper surface and the lower surface.

A through hole 21 a is formed in the top wall 21 . The through hole 21a penetrates the top wall 21 in the vertical direction. The center axis of the through hole 21a is positioned forward of the cap axis O. As shown in FIG.
The peripheral wall 22 extends downward from the outer peripheral edge of the top wall 21 . At the rear end of the hinge cap 3 , the lower end of the peripheral wall 22 is connected via a hinge H to the upper end of the fixed tubular portion 11 . The lid body 20 is integrally formed with the fixed portion 10 together with the hinge H. As shown in FIG.

The upper cylindrical portion 24 extends downward from the opening edge of the through hole 21a. The support portion 25 extends from the lower end portion of the upper tubular portion 24 toward the inner side of the upper tubular portion 24 and has an annular shape in plan view. The lower tubular portion 26 extends downward from the inner peripheral edge of the support portion 25 . The lower end portion of the lower tubular portion 26 is in contact with the inner side of the pouring tubular portion 14 over the entire outer peripheral surface thereof. The through-hole 21a, the upper tubular portion 24, the support portion 25, and the lower tubular portion 26 have respective central axes located on a common axis.

The threaded member 30 has a head portion 31 , an upper threaded portion 32 and a seal tubular portion 33 . As shown in FIG. 1, the head portion 31 is formed in a disc shape in a plan view. The outer diameter of the head portion 31 is smaller than the inner diameter of the through hole 21 a of the lid 20 . As shown in FIG. 2 , the head portion 31 is accommodated inside the through hole 21 a and the upper cylindrical portion 24 .

The head portion 31 is provided at the upper end portion of the upper threaded portion 32 and protrudes outward from the upper threaded portion 32 . The lower surface of the head portion 31 is in contact with the upper surface of the support portion 25 . Therefore, downward movement of the threaded member 30 with respect to the lid 20 is restricted. The upper surface of the head portion 31 is formed with a concave portion 31a that is recessed downward. A plurality of recesses 31 a are formed at intervals in the circumferential direction of the head portion 31 . Each concave portion 31a is formed on the outer peripheral edge of the head portion 31 and penetrates the head portion 31 in the vertical direction. Note that the concave portion 31a does not have to penetrate the head portion 31 in the vertical direction.

The upper threaded portion 32 extends downward from the head portion 31 and has a tubular shape. An inner peripheral surface of the upper threaded portion 32 is formed with a female threaded portion that is screwed to the male threaded portion of the lower threaded portion 15 b of the inner plug portion 15 . The threads of the upper threaded portion 32 and the lower threaded portion 15b are engaged with each other over at least one or more circumferences. This ensures the strength of the screwing.
The female threaded portion of the upper threaded portion 32 is formed over the entire length of the upper threaded portion 32 in the vertical direction.

In this embodiment, the female threaded portion of the upper threaded portion 32 and the male threaded portion of the lower threaded portion 15b are double threads. As a result, the number of rotations of the threaded member 30 when threading the upper threaded portion 32 and the lower threaded portion 15b is reduced, and the manufacturing efficiency of the hinge cap 3 can be improved. However, the male screw portion and the female screw portion may be multi-start threads of 3 or more threads, or may be single-thread threads.

The seal tube portion 33 extends downward from the head portion 31 . The seal cylinder portion 33 is positioned outside the upper screw portion 32 . Since the seal cylinder portion 33 is fitted in the lower cylinder portion 26, the gap between the seal cylinder portion 33 and the lower cylinder portion 26 is sealed.

Next, the operation of the hinge cap 3 constructed as above will be described.

When manufacturing the hinge cap 3 , first, the fixing portion 10 and the lid body 20 are integrally formed, and the lid body 20 is closed with respect to the fixing portion 10 . Also, the threaded member 30 is prepared separately.
Next, the threaded member 30 is screwed to the lower threaded portion 15b through the through hole 21a of the lid 20. As shown in FIG. At this time, the claws of a jig are inserted into the recesses 31 a of the threaded member 30 , and the jig is rotated about the central axis of the threaded member 30 with respect to the lid 20 . As a result, the male threaded portion of the lower threaded portion 15b and the female threaded portion of the upper threaded portion 32 are screwed together, and the threaded member 30 moves downward. At this time, since the upper surface of the thread of the lower threaded portion 15b and the lower surface of the thread of the upper threaded portion 32 are in contact with each other, they are formed on the lower surface of the thread of the lower threaded portion 15b. The small screw portion 15c is prevented from hindering the rotation of the threaded member 30. As shown in FIG. When the threaded member 30 moves downward and the head portion 31 comes into contact with the support portion 25, the rotation of the jig is stopped. This completes the manufacture of the hinge cap 3 . The container 1 is manufactured by capping the hinge cap 3 manufactured in this manner on the container body 2 by a so-called capping machine.

Before using the container 1, the communication hole 12b of the closure plate 12 is closed by the inner plug portion 15 and the weakened portion 12a. From this state, when the cover 20 is rotated upward with respect to the fixed portion 10 around the hinge H by, for example, picking up the knob 23 and pulling it up, the lower threaded portion 15b and the upper threaded portion 32 are engaged. By being screwed, an upward force acts on the inner plug portion 15 as well. This upward force breaks the weakened portion 12a, separates the inner plug portion 15 from the closing plate 12 as shown in FIG. 3, and opens the communication hole 12b. Thereby, the container 1 can be opened.

The separated inner plug portion 15 is held by the lid 20 by screwing the lower threaded portion 15b and the upper threaded portion 32 together. Therefore, the inner plug portion 15 is prevented from falling off from the lid body 20 . Further, when the threaded member 30 pulls up the inner plug portion 15, the upper threaded surface of the upper threaded portion 32 is pressed against the lower surface of the threaded portion of the lower threaded portion 15b. At this time, since the small screw portion 15c is formed on the lower surface of the thread of the lower threaded portion 15b, the small threaded portion 15c and the thread of the upper threaded portion 32 are engaged, and the upper threaded portion is engaged. 32 and the lower threaded portion 15b are fixed to each other. This makes it difficult for the inner plug portion 15 to rotate with respect to the threaded member 30, so that the drop-off of the inner plug portion 15 can be suppressed more reliably.

Even after the inner plug portion 15 is separated, if the lid body 20 is closed, the lower tubular portion 26 is fitted inside the pouring tubular portion 14, and the sealing tubular portion 33 is lowered. By being fitted inside the tubular portion 26, the inside of the pouring tubular portion 14 can be closed.

As described above, the hinge cap 3 includes the fixed portion 10 fixed to the mouth portion 2a of the container body 2, the lid body 20 connected to the fixed portion 10 so as to be rotatable about the hinge H, and the lid body 20 and a threaded member 30 whose downward movement with respect to is restricted. A lower threaded portion 15b is formed in the inner plug portion 15 of the fixing portion 10, and the threaded member 30 passes through the through hole 21a formed in the top wall 21 of the lid 20, and the lower threaded portion 15b. is screwed on. With this configuration, by rotating the lid 20 around the hinge H, an upward force can be applied to the inner plug portion 15 via the lid 20 and the threaded member 30 . This force breaks the weakened portion 12a, separates the inner plug portion 15 from the closing plate 12, and releases the blockage of the mouth portion 2a of the container body 2. As shown in FIG. As described above, according to the present embodiment, for example, after the lid 20 is opened, the inner plug portion 15 is not unsealed by pulling up the pull ring with a finger, but is linked to the operation of opening the lid 20. The inner plug portion 15 can be unsealed. Therefore, the operability at the time of opening can be improved.

In addition, since the threaded member 30 is fixed to the inner plug portion 15 by screwing, the threaded member 30 is less likely to come off from the inner plug portion 15 as compared with the case of fixing by, for example, undercut fitting. , the inner plug portion 15 can be separated from the closing plate 12 more reliably.

The lid body 20 also has an upper tubular portion 24 extending downward from the opening edge of the through hole 21a, and a support portion 25 extending inwardly of the upper tubular portion 24 from the lower end portion of the upper tubular portion 24. The threaded member 30 has a head portion 31 that contacts the support portion 25 . With this configuration, when the lid body 20 rotates upward around the hinge H, an upward force can be smoothly transmitted from the support portion 25 to the head portion 31 . Therefore, it becomes easier to separate the inner plug portion 15 to which the screwing member 30 is screwed from the closing plate 12, and the operability at the time of unsealing can be improved.

The threaded member 30 has a head portion 31 provided at the upper end portion of the upper threaded portion 32, and the upper surface of the head portion 31 is formed with a concave portion 31a. According to this configuration, when the hinge cap 3 is manufactured, the screwing member 30 can be easily rotated with respect to the lid body 20 by inserting the claw portion of the jig into the concave portion 31a and rotating the jig. be able to. Therefore, the manufacturing efficiency of the hinge cap 3 can be enhanced.

The lid body 20 has a knob portion 23 projecting radially outward from the top wall 21, and as shown in FIG. An attachment member 30 is positioned. With this configuration, when the knob portion 23 is pulled upward, the upward force acting on the threaded member 30 can be amplified by the principle of leverage. Therefore, the operating force required for breaking the weakened portion 12a can be reduced, and the operability at the time of opening can be improved.

The fixed part 10 also has a pouring tube part 14 that extends upward from the closing plate 12 and surrounds the inner plug part 15 . As a result, when the inner plug portion 15 is separated from the closing plate 12 and the communication hole 12b is opened, the pouring cylinder portion 14 and the inside of the container body 2 are brought into communication with each other through the communication hole 12b. Therefore, the contents in the container main body 2 can be discharged through the communication hole 12b and the pouring tube portion 14. As shown in FIG. In addition, since the cover 20 is formed with a lower cylindrical portion 26 that fits inside the pouring cylindrical portion 14, the cover 20 remains closed with respect to the fixed portion 10 even after the communication hole 12b is opened. By doing so, it becomes possible to seal the inside of the pouring tube portion 14 .

The technical scope of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention.

For example, in the above embodiment, the upper threaded portion 32 is formed with the female thread and the lower threaded portion 15b is formed with the male thread, but this relationship may be reversed. In other words, the upper threaded portion 32 may be formed with a male thread, and the lower threaded portion 15b may be formed with a female thread. In this case, by inserting the columnar upper threaded portion 32 having a male threaded portion on its outer peripheral surface into the cylindrical lower threaded portion 15b having a female threaded portion on its inner peripheral surface, A configuration similar to the embodiment can be realized.

Further, although the recessed portion 31a in the above-described embodiment is provided at the outer peripheral edge of the head portion 31, the recessed portion 31a may be provided at the central portion of the upper surface of the head portion 31. FIG. In this case as well, the threaded member 30 can be easily rotated with respect to the lid body 20 by forming the recessed portion 31a into, for example, a cross-shaped or linear-shaped groove in plan view and using a jig that fits into the groove. .

In addition, it is possible to appropriately replace the components in the above-described embodiments with well-known components without departing from the scope of the present invention, and the above-described embodiments and modifications may be combined as appropriate.

DESCRIPTION OF SYMBOLS 2... Container main body 2a... Mouth part 3... Hinge cap 10... Fixing part 12... Closing plate 12a... Weakening part 14... Extraction cylinder part 15... Middle stopper part 15b... Lower screwing part 20... Lid body 21... Top wall DESCRIPTION OF SYMBOLS 21a... Through-hole 23... Knob part 24... Upper cylinder part 25... Support part 30... Threaded member 31... Head part 31a... Recessed part 32... Upper screw part H... Hinge O... Cap shaft

Claims (5)

a fixing portion fixed to the mouth portion of the container body in which the contents are accommodated;
a capped tubular cover body rotatably connected to the fixed part around a hinge;
a screwing member that is formed separately from the lid and the fixing portion and whose downward movement with respect to the lid is restricted;
The fixing portion has a blocking plate that blocks the mouth portion, and an inner plug portion that is connected to the blocking plate via a weakened portion,
A lower threaded portion is formed in the inner plug portion,
A hinge cap in which an upper screwing portion of the screwing member is screwed to the lower screwing portion through a through hole formed in a top wall of the lid. The lid has an upper tubular portion extending downward from the opening edge of the through hole, and a support portion extending inwardly of the upper tubular portion from a lower end portion of the upper tubular portion,
2. The hinge cap according to claim 1, wherein said threaded member has a head portion that contacts said support portion. The threaded member has a head portion provided at the upper end of the upper threaded portion,
2. The hinge cap according to claim 1 , wherein an upper surface of said head portion is formed with a plurality of recesses recessed downward. The lid body has a knob projecting outward in the radial direction of the cap from the top wall,
4. The hinge cap according to any one of claims 1 to 3, wherein said threaded member is positioned between said knob and said hinge in plan view. 5. The hinge cap according to any one of claims 1 to 4, wherein said fixing portion extends upward from said closing plate and has a pouring tube portion surrounding said inner plug portion.

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