JP7179611B2 - screw cap - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to a screw cap, and more particularly to a screw cap capable of emitting sound upon rotation.

As a screw cap that opens and closes by rotating the cap, there has been known a screw cap that emits a sound when the cap rotates and allows the user to intuitively recognize the opening and closing of the lid (see, for example, Patent Documents 1).
In the screw cap described in Patent Document 1, a sound producing member vertically provided from the cap is engaged with a sound producing projection provided on the upper wall of the inner plug or the upper surface of the fitting cylinder portion when the cap is finished being fastened. and emits a sound.

JP 2018-172156 A

However, the screw cap described in Patent Document 1 has the problem that the sound is not sufficiently transmitted to the outside because the sound producing member and the sound producing projection are provided inside the cap, making it difficult to hear.
Moreover, since the sound producing member is independently suspended from the cap, there is also a problem that the weight of the cap increases.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and to provide a screw cap that makes the sound produced by making sounds clearer and also reduces the weight of the cap.

In order to solve the above problems, the present invention provides a screw cap comprising a cap body attached to a container body and an upper lid screwed and attached to the cap body as a screw cap, wherein the cap body comprises: The upper lid comprises a mounting portion mounted to the mouth portion of the container body, a threaded wall portion erected from the mounting portion , and a pouring tube erected at the upper end of the threaded wall portion via a ceiling wall . It comprises a top wall and a threaded cylinder part vertically installed from the top wall, a notch part is formed in the lower end part of the threaded cylinder part, a sound producing piece vertically installed from the upper part of the notch part, and a mounting part A structure characterized by having a sound producing protrusion projecting from the upper surface and engaging with the sound producing piece to produce sound is adopted.

As an embodiment of the screw cap, the notch is formed so that the sounding piece does not hit the threaded portion of the threaded wall, and the notch is sufficiently cut so that the sounding piece can emit sound. The upper lid includes an outer peripheral wall hanging from the outer peripheral edge of the top wall, and a sealed envelope hanging from the lower surface of the top wall and in close contact with the inner peripheral surface of the dispensing tube. A configuration characterized by having

As a specific embodiment of the screw cap, the cap body has a plug connected to the inner peripheral surface of the pouring tube via a thin weakened portion, and the plug is erected on the upper part and A first engaging projection is formed, and has a cylindrical wall with external teeth on the outer circumference. A configuration characterized by having an engaging portion formed with an engaging projection and a cutting tube portion having internal teeth meshing with the external teeth on the inner periphery thereof, and the airtight envelope is provided on the outer periphery of the cutting tube portion and integrated therewith. The cap body has a first multi-threaded portion screwed on the outer periphery of the threaded wall portion, and the upper lid is screwed on the inner periphery of the threaded cylinder portion. A configuration characterized by having a second multi-start thread portion is adopted.

In the screw cap of the present invention, the sound producing piece is formed in the notch in the lower part of the screw cylinder part, and the sound producing sound is made clearer by engaging with the sound producing projection protruding from the upper surface of the mounting part. In addition, by forming the sound output piece by the notch of the screw cylinder portion, the weight of the upper cover can be reduced.

FIG. 10 is a diagram showing a screw cap embodiment in which it is plugged and attached to a container body, where (a) is a side cross-sectional view and (b) is a cross-sectional view taken along the line XX of (a). . It is a figure which shows the cap main body of a screw cap, (a) is a top view, (b) is a side view. It is a figure which shows the upper cover of a screw cap, (a) is a sectional side view, (b) is a bottom view. In an embodiment of the screw cap, (a) is a developed view of the first multi-threaded portion (dotted line), and (b) is a developed view of the second multiple-threaded portion (solid line). (a) is a screw developed view of the first multi-threaded portion and the second multi-threaded portion when the upper lid and the cap body are set; It is a figure which shows that a sounding piece sometimes engages with a sounding protrusion, and emits a sound.

Next, the screw cap of the present invention will be described with reference to the drawings showing embodiments.

In FIG. 1, A is a container main body, B is a cap main body attached to the container main body A, and C is an upper lid which is set on the cap main body B by plugging.

As shown in FIG. 1, the mouth portion 1 of the container main body A is provided with a locking projection 2 that is fitted to the cap main body B to retain the cap body B. As shown in FIG.
As shown in FIGS. 1 and 2, the cap body B is composed of an outer cylinder 5 on the outer peripheral side, an inner cylinder 6 on the inner peripheral side, and an upper wall 7 positioned on the top surface side of the mouth portion 1. A mounting portion 4 forming an annular groove into which the screw is fitted, a threaded wall portion 8 erected continuously from the upper wall 7, and a spout connected to the upper end of the threaded wall portion 8 via a ceiling wall 9. It is composed of a cylinder 10.

The pouring tube 10 forms a pouring port for pouring out the contents contained in the container main body A, and has a cylindrical base 11 and a lip part 12 that is enlarged in diameter and curved outward from the upper part of the base 11 . have
A plug body 15 is integrally connected to the inner peripheral surface of the base portion 11 of the dispensing tube 10 via a thin weakened portion 14 formed over the entire circumference.
The stopper 15 has a cylindrical cylindrical wall 16 erected on its upper portion, and a bottom wall 17 on its lower portion together with a thin weakened portion 14 to seal the spout.

The cylindrical wall 16 has external teeth 18 protruding at a plurality of locations on the outer periphery thereof, and a first engaging protrusion 19 protruding annularly from the upper inner periphery of the cylindrical wall 16 .
The external teeth 18 are formed substantially in the radial direction and have a shape that meshes with internal teeth 51 of the upper cover C, which will be described later.
In this embodiment, the external teeth 18 are provided at six locations in the circumferential direction, but the number is not limited to six, and they can be provided at a plurality of appropriate locations according to the shape of the plug body 15 or the like.

The threaded wall portion 8 extends vertically from the outer peripheral edge of the ceiling wall 9 which is connected to the lower portion of the pouring tube 10 at the inner peripheral edge thereof, and the first multi-threaded threaded portion 23 is provided on the outer peripheral surface.
As shown in FIG. 2(a), the first multi-threaded thread portion 23 is not vertically symmetrical in cross section like a normal screw thread, but has an inclined upper surface 23a formed with a steeply inclined upper surface and a lower surface A flat lower surface 23b is formed flat, and the first multi-start thread portion 23 is formed with double-start threads starting at 180° intervals at the upper end.
In this embodiment, the first multi-threaded portion 23 is a two-threaded thread, but may be a multi-threaded thread of three or more threads depending on the height of the threaded wall portion 8 .
A plurality of reinforcing ribs 24 are provided on the inner peripheral surface of the threaded wall portion 8 so that the upper portions thereof are connected to the ceiling wall 9 and extend in the axial direction.

A sound producing protrusion 26 is projected from the upper surface of the upper wall 7 of the mounting portion 4 so that a sound producing piece 46, which will be described later, is engaged to produce a sound.
In this embodiment, two sound producing protrusions 26 are provided concentrically at intervals of 180°, but one or three or more may be provided.

The upper wall 7 of the mounting portion 4 is connected to the lower portion of the threaded wall portion 8 at the inner peripheral edge thereof, and the outer cylinder 5 and the inner cylinder 6 are provided vertically from the lower portion of the upper wall 7 .
Between the outer cylinder 5 and the inner cylinder 6 is formed a fitting groove into which the mouth portion 1 of the container body A is fitted. 1 is provided.

A notch recess 29 is formed in the outer cylinder 5 in the radial direction from the outer peripheral surface in the circumferential direction, and below the notch recess 29, the cap body B can be separated from the container body A and separated for disposal. A mechanism 30 is provided.
The sorting mechanism 30 is provided with a grasping portion 32 via a through slit 31 formed in the axial direction over a predetermined arc range on the outer peripheral surface of the lower portion of the outer cylinder 5 . 5 and can be deployed outward.

A hook recess 34 for hooking by inserting a fingertip is formed in the right direction from the vertical cut portion 33 of the grip portion 32 .
As shown in FIG. 2, the through slit 31 extends from the vertical cut portion 33 to a starting end portion 31a in the opposite direction (left direction) to the gripping portion 32, and the gripping portion 32 extends to the outer cylinder at the terminal end portion 31b, which is the other end. It is united with 5.
In this embodiment, the through slit 31 is formed over an arc range of about 120°, and the through slit 31 has a portion from the intermediate portion 31c adjacent to the hook recess 34 to the terminal portion 31b so that it can be easily broken. Connected by a thin wall.

A lower portion of the outer cylinder 5 adjacent to the terminal end portion 31b of the through slit 31, including the locking reduced diameter portion 27, is notched in the radial direction, and a breakable thin-walled beginning is formed between the outer cylinder 5 and the grip portion 32. A break 35 is formed.
In the notch recess 29 of the outer cylinder 5, a thin circumferential cutting part 36 extending in the rear direction from the terminal end 31b of the through slit 31 to the vicinity of the starting end 31a of the outer cylinder 5 can be broken on the inner peripheral side of the outer cylinder 5. A thick connection portion (not shown) facing the grip portion 32 is formed between the end portion of the circumferential cut portion 36 and the terminal end portion 31b.

As shown in FIGS. 1 and 3, the upper lid C includes a disc-shaped top wall 40 provided on the top plate portion, and an outer peripheral wall 41 extending vertically from the outer peripheral edge of the top wall 40 . On the inner surface of the top wall 40, an engaging portion 42 vertically provided near the center, and a cutting tube portion 43 and a threaded tube portion 44 are vertically provided in order from the engaging portion 42 to the outer side of a concentric circle, integrally with the top wall 40. there is

The engaging portion 42 has an annular second engaging projection 48 formed on the outer periphery of the distal end thereof, the annular second engaging projection 48 overcoming the first engaging projection 19 of the cap main body B and closely fitting to the inner peripheral surface of the cylindrical wall 16 . ing.

The cutting cylinder part 43 has a sealed envelope 50 whose outer periphery is in close contact with the inner peripheral surface of the pouring tube 10 to seal the spout when the lid is closed, and internal teeth 51 which mesh with the outer teeth 18 on the inner periphery of the sealed envelope 50. The internal teeth 51 of this embodiment are provided at six locations in the circumferential direction, which is the same number as the external teeth 18 .

The threaded cylindrical portion 44 is provided with a second multi-threaded portion 55 screwed onto the first multi-threaded portion 23 of the cap main body B on the inner periphery thereof, and the second multi-threaded portion 55 is formed like a normal thread. In addition, the cross section is not vertically symmetrical, and is composed of a flat upper surface 55a with a flat upper surface and an inclined lower surface 55b with a steeply inclined lower surface. It is formed with double-start threads starting at 180° intervals.
The second multi-start threaded portion 55 can have three or more multi-start threads corresponding to the first multi-start threaded portion 23, as described above.

As shown in FIG. 4 , a notch 45 is formed at the lower end of the screw cylinder 44 , and a sound producing piece 46 is vertically provided from the upper part of the notch 45 .
The notch 45 must be formed so that the sound producing piece 46 does not collide with the first multi-threaded threaded portion 23 during rotation, and must have a sufficient notch so that the sound producing piece 46 can produce sound. must.
In this embodiment, as shown in FIG. 4(b), the cutout portion 45 is cut out in a mountain shape below the second multi-threaded screw portion 55, and the sound producing piece 46 extends from the highest position (top wall). is installed vertically.
The notch 45 has a mountain shape that extends from the lowest position to the highest position via an inclined surface. It doesn't matter what it is.
In addition, the sound producing piece 46 preferably has a thickness of 0.4 to 1.0 mm so that the sound can be produced easily by playing.

The tip of the sound producing piece 46 comes into contact with the sound producing projection 26 of the cap main body B just before the tightening of the upper lid C is completed, and the sound producing piece 46 comes into contact with the sound producing projection 26 at the same time as the tightening is completed. It is set to climb over, vibrate, and emit sound.
In this embodiment, the sound producing pieces 46 are arranged in two concentric circles at 180° intervals like the sound producing projections 26, but the same number as the sound producing projections 26, i.e., one or three. It is good as above.
In addition, as shown in FIG. 1(a), the outer peripheral wall 41 abuts against the outer cylinder 5 of the cap body B and the sorting mechanism 30 at the end of tightening so that the sound emitted by the sound output reaches the outside. A gap is provided to prevent this.

Next, the mode of use and effects of this embodiment will be described.
First, in order to attach the screw cap of this embodiment to the container main body A, the upper lid C is plugged from the top of the cap main body B, the cap main body B and the upper lid C are set, and then the cap main body B is attached to the opening 1. The fitting portion 4 is applied to the bottle and the bottle is capped.

In plugging the upper lid C into the cap main body B, when the upper lid C is slightly rotated in the left-right direction with no load applied to the upper lid C, the internal teeth 51 of the cutting tube portion 43 are as shown in FIG. 1(b). When the position shown is reached, the internal teeth 51 are fitted between the external teeth 18 and are ready to mesh with the external teeth 18 of the plug 15 .
At this time, the positional relationship between the first multi-threaded portion 23 of the cap main body B and the second multi-threaded portion 55 of the upper lid C is as shown in the developed views of the threads in FIGS. They are in phase.

From this state, when the upper lid C is pushed into the cap main body B, as shown in FIG. The threaded cylindrical portion 44 of the upper lid C comes to fit into the threaded wall portion 8 of the cap main body B, and the upper lid C is attached to the cap main body B. is completed.

As described above, in the screw cap of this embodiment, when the top lid C is set on the cap body B, the top lid C is attached to the cap body B by tapping. The setting of the upper lid C and the cap main body B may be completed.
The screw cap assembled in the set state is capped by applying the mounting portion 4 of the cap body B to the mouth portion 1 of the container body A filled with the content, and is used.
In this embodiment, the screw cap is attached to the container main body A by tapping, but it may be attached by screwing.

Next, in order to use the container fitted with the screw cap of this embodiment, the upper lid C is rotated with respect to the cap main body B in the screwing direction.
When the upper lid C is rotated, the internal teeth 51 of the cutting tube portion 43 rotate and come into contact with the external teeth 18 of the plug body 15 of the cap body B, and the rotational force of the upper lid C is applied to the plug body 15 through both teeth. become.

As the rotation progresses, the tip of the sound producing piece 46 provided in the notch 45 of the screw cylinder 44 is pushed into the sound producing projection 26 provided on the upper surface of the upper wall 7 at the lower part of the screw wall 8. 5, the sound producing piece 46 is bent and deformed to overcome the sound producing protrusion 26, and the curved and deformed sound producing piece 46 restores and vibrates, producing a sound. emitted.

At this time, the second engaging protrusion 48 of the engaging portion 42 is tightly fitted to the inner peripheral surface of the tubular wall 16 of the plug 15, so that the tubular wall 16 is reinforced from the inside and the upper lid C is closed. is easily transmitted to the plug body 15 via the inner teeth 51 and the outer teeth 18, and the rotation of both screws generates a force to lift the plug body 15 upward.
As the rotation of the upper lid C progresses, the thin weakened portion 14 finally breaks due to the rotational force and the lifting force applied to the plug 15, and the spout is opened in the pouring tube 10 and separated from the pouring tube 10. The plug body 15 is pulled up by the engaging portion 42 that engages with the cylindrical wall 16 and rises together with the upper lid C. As shown in FIG.

Further, when the second multi-threaded portion 55 is unscrewed from the first multi-threaded portion 23 and the upper lid C is separated from the cap main body B, the pouring cylinder 10 from which the stopper 15 has been removed together with the upper lid C can be poured. The contents in the container main body A can be poured out from the outlet.

After pouring out the contents, when screwing the upper lid C to the cap main body B again, the airtight envelope 50 of the cutting tube portion 43 of the upper lid C is brought into close contact with the inner periphery of the pouring tube 10 and the inside of the container is closed. Can be sealed.
When the two screws are completely screwed together, as shown in FIG. 5, the tip of the sound producing piece 46 again engages with the sound producing projection 26 and vibrates to produce a sound. , the user of the present invention can perceive completion of closing of the cap by feeling (click feeling).

The cap main body B of the screw cap of this embodiment can be separated from the container main body A by a simple operation and separated and discarded when the container is discarded after use.
First, when the grip portion 32 is pulled forward by hooking a finger on the hook recess 34 near the vertical cut portion 33 shown in FIG.
When the gripping portion 32 is further pulled while gripping the gripping portion 32 with fingers, the thin portion from the intermediate portion 31c to the terminal portion 31b of the through slit 31 is easily broken, and then the terminal portion 31b of the through slit 31 is broken. The thin-walled start breaking portion 35 provided adjacently is broken, and the breaking progresses to the circumferential cut portion 36 .

When the circumferential cut portion 36 is broken, the engagement of the engagement reduced diameter portion 27 with the engagement rib 2 is released. When the restraint on the mouth portion 1 by 27 is released and the grip portion 32 is pulled up, the cap main body B can be detached from the container main body A and separated and discarded.

In this embodiment, the thin weakened portion 14 is broken to open the spout in the spout tube 10, and the stopper 15 is moved to the upper lid C. However, a partition is provided inside the spout tube 10. Alternatively, the spout may be opened by breaking a thin weakened portion provided in the partition wall with a pull ring or the like, or the spout may be provided in the spout cylinder 10 from the beginning.
Further, in this embodiment, a multi-start screw that can be screwed with a small number of revolutions is used as the screw, but a normal screw may be used.

The screw cap of the present invention emits a sound when the top lid is opened and closed, allowing the user to intuitively know the open/closed state of the top lid, and preventing excessive rotation when opening and closing the lid.
In addition, the lid can emit a clear sound when the lid is opened and closed, and the lid is lightweight, so that even children and the elderly can use it without worry, and it can be suitably used as a container for foods, drinks, seasonings, etc.

A Container body B Cap body C Upper lid 1 Mouth 2 Locking rib 4 Mounting part 5 Outer cylinder 6 Inner cylinder 7 Upper wall 8 Threaded wall 9 Top wall 10 Extraction tube 11 Base 12 Lip 14 Thin weakened part 15 Plug Body 16 Cylindrical wall 17 Bottom wall 18 External teeth 19 First engaging protrusion 23 First multiple threaded portion 23a Inclined upper surface 23b Flat lower surface 24 Reinforcement rib 26 Sound producing protrusion 27 Locking reduced diameter portion 29 Notch recess 30 Sorting Mechanism 31 Penetrating Slit 31a Starting End 31b Ending 31c Intermediate Part 32 Grasping Part 33 Vertical Cutting Part 34 Hooking Recess 35 Thin Starting Part 36 Circumferential Cutting Part 40 Top Wall 41 Peripheral Wall 42 Engagement Part 43 Cutting Tube Part 44 Screw Cylindrical portion 45 Notch portion 46 Sound producing piece 48 Second engagement protrusion 50 Airtight envelope 51 Internal teeth 55 Second multi-threaded screw portion 55a Flat upper surface 55b Inclined lower surface

Claims (6)

A screw cap consisting of a cap body attached to a container body and an upper lid attached by being screwed to the cap body,
The cap body includes a mounting portion mounted on the mouth of the container body, a threaded wall portion erected from the mounting portion , and a pouring tube erected on the upper end of the threaded wall portion via a ceiling wall. ,
The upper lid has a top wall and a threaded cylinder part vertically installed from the top wall,
A notch is formed in the lower end of the screw cylinder part, and a sound producing piece vertically provided from the upper part of the notch, and a sound produced by engaging with the sound producing piece and protruding from the upper surface of the mounting part. A screw cap, characterized in that it has a protruding part. The notch is formed so that the sound producing piece does not collide with the threaded portion of the threaded wall, and the notch is sufficiently cut so that the sound producing piece can emit sound. A screw cap according to claim 1. The top lid has an outer peripheral wall extending from the outer peripheral edge of the top wall, and an airtight envelope extending from the lower surface of the top wall and in close contact with the inner peripheral surface of the pouring tube. 3. The screw cap of claim 2. The cap main body has a stopper connected to the inner peripheral surface of the pouring tube via a thin weakened portion,
The plug has a tubular wall erected on the top, a first engaging projection formed on the inner circumference, and external teeth on the outer circumference,
The upper cover has an engaging portion vertically extending from the lower surface of the top wall, and has an engaging portion formed with a second engaging projection engageable with the first engaging projection on the outer periphery, and internal teeth meshing with the external teeth on the inner periphery. A screw cap according to any one of claims 1 to 3, characterized in that it has a cutting tube portion having a 5. The screw cap according to claim 4, wherein the airtight envelope is provided on and integrated with the outer periphery of the cutting cylinder. The cap body has a first multi-threaded threaded portion screwed to the outer periphery of the threaded wall portion,
6. The screw cap according to any one of claims 1 to 5, wherein the upper lid has a second multi-threaded portion screwed on the inner circumference of the screw cylinder portion.

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