JP2907064B2 - Cap having pill fur proof characteristics and engagement structure between the cap and the container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap having a pill fur proof characteristic mainly used for a synthetic resin container, and an engagement structure between the cap and the container. And a cap having a pill fur proof characteristic and an engagement structure between the cap and the container.

[0002]

2. Description of the Related Art In recent years, as a cap for closing a container such as a beverage bottle, a cap made of a synthetic resin having a pill-proof characteristic for indicating the fact of opening has been used. Is well known.

[0003] This type of cap has a top wall that closes the opening of the mouth and neck of the container, and a cap body that has a cylindrical portion that hangs down from the periphery of the top wall. The tubular skirt wall is connected to the tubular portion via a bridge. When opening the cap, the cap body is rotated with respect to the skirt wall. At this time, the bridge is broken, the cap body and the skirt wall are separated, and the mouth of the container can be opened.

Since this type of conventional cap cannot be opened unless the bridge is cut, it is possible to recognize whether or not the bridge has been opened by confirming whether or not the bridge has been cut. However, after opening, if the cap body is rotated in the closing direction and the lid is closed again, the cut state of the cut bridge cannot be easily confirmed, for example, when the consumer inadvertently purchases the product and At the stage of opening the lid, the fact of opening may be known for the first time. The fact of opening at this stage is usually not subject to return, and there is a need for a cap having effective pill fur proof characteristics that can clearly recognize the fact of opening.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cap having a pill fur proof characteristic which allows the user to clearly recognize the fact that the cap has been opened. Still another object of the present invention is to provide an engagement structure between the cap and the container, in which the breakage of the cylindrical portion and the skirt portion of the cap can be performed substantially uniformly over the entire circumferential direction. .

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object, and has the following features. That is, according to the present invention, there is provided a cap body having a top wall having a cylindrical portion extending from the periphery of the top wall, and a cylindrical shape hanging down from the extended end of the cylindrical portion via a plurality of bridges. In a cap having a pill fur proof characteristic having a skirt wall, a portion facing the bridge-side end of the skirt wall and the end of the cylindrical portion slides with each other when the cap is opened, and Rutotomoni provided a cam having an inclined surface for guiding away from each other and the skirt wall of each of said cap body,
At least an inclined surface of a cam formed on the skirt wall;
The opposite surface is a vertical surface that extends in a substantially vertical direction.
And one of the bridges is the skirt wall
Side has a fragile part so that when opening the cap,
Break at the weak part and reach the position facing the vertical plane
Cap having a pilfer-proof properties, characterized in that it is configured to is provided.

According to the present invention, two cams formed on the skirt wall and two cams formed on the cylindrical portion are connected to each other.
A cap having the above-mentioned pill fur proof characteristic is provided, wherein a bridge is formed at an intermediate portion of an articulated cam.

Further, according to the present invention, there is provided a cap having the above-mentioned pill fur proof characteristic, wherein a bridge other than the bridge having the fragile portion is cut near the cylindrical portion.

Further, according to the present invention, there is provided a cap having the above-mentioned pill fur proof characteristic, wherein a plurality of ribs are provided on the inner surface of the skirt wall in close contact with the outer surface of the container on which the cap is mounted. .

Further, according to the present invention, a projection formed on an outer surface of a container to which the cap is mounted, and a projection formed on an inner surface of a skirt wall of the cap, when at least the cap is rotated in an opening direction. There is provided an engagement structure between a cap and a container including a claw portion meshing with each of the protruding pieces.

Further, according to the present invention, the surface of the projecting piece facing the claw portion is formed as an inclined surface which is inclined downward from the opening side of the container to gradually separate from the claw portion. An engagement structure between the cap and the container is provided.

Further, according to the present invention, there is provided an engagement structure between the cap and the container, the surface of the claw portion facing the inclined surface of the projecting piece being substantially parallel to the inclined surface. .

Further, according to the present invention, there is provided an engagement structure between the cap and the container, wherein a curved portion is formed above a portion of the claw portion facing the inclined surface of the projecting piece.

[0014]

[0015]

[0016]

When opening the cap having the pill fur proof characteristic according to the first aspect of the present invention, a cap body having a top wall and a cylindrical portion is connected to a plurality of bridges from the extending end of the cylindrical portion. Rotate in the opening direction with respect to the cylindrical skirt wall hanging down through. As a result, the bridge is cut, and the inclined surface of the cam formed on the cylindrical portion moves upward while sliding on the inclined surface of the cam formed on the skirt wall. As a result, the cap body is pushed upward, that is, in a direction away from the skirt wall, and the skirt wall is pressed and moved downward, so that the cap body and the skirt wall are separated from each other. Here, even if the cap main body is rotated in the closing direction, the cap main body is kept separated from the skirt wall, so that the fact that the cap has been opened can be clearly recognized. In the present invention, the inclined surface may have any shape as long as it is formed so as to guide the cap body and the skirt wall in a separated state, and may have a curved surface, and may not have a curved surface. You may.

Further, in the cap having the pill fur proof characteristic according to the present invention, the surface opposite to the inclined surface of the cam formed on the skirt wall has a vertical surface extending substantially vertically, and One of the bridges has a weak portion on the skirt wall side. For this reason, when the cap body is rotated in the opening direction with respect to the skirt wall, the bridge is broken at the fragile portion, separated from the skirt wall and integrated with the cylindrical portion, and opposed to the vertical plane. To the position. Therefore, even if you try to rotate the cap body in the closing direction, this bridge abuts the vertical plane,
It does not rotate. Therefore, the separated state between the cap body and the skirt wall is more reliably maintained, and the fact that the cap has been opened can be clearly recognized.

In the present invention, the vertical plane includes, in addition to a plane extending in the vertical direction, a plane slightly inclined with respect to the vertical direction. In addition, it may have a curved surface or may not include a curved surface. In any case,
The vertical plane only needs to be configured such that when the cap body is rotated in the cap closing direction, the cap body comes into contact with the bridge and can prevent rotation of the cap body and the skirt wall.

In the present invention, the fragile portion is
The bridge (dimension in the circumferential direction of the cap) is configured to be shorter on the skirt wall side than the cylinder side, or the bridge is formed to be thinner on the skirt wall side than the cylinder side. However, any configuration may be used as long as the bridge is configured to be broken on the skirt wall side when the cap is opened.

In the cap having the pill fur proof characteristic according to the second aspect of the present invention, two cams formed on the skirt wall and the cylindrical portion and two notches corresponding to the cams are connected to each other. By these cams, the cap body and the skirt wall are reliably guided in a separated state.

In the cap body of the present invention,
Another cam may be formed at a portion facing the bridge-side end of the skirt wall provided with the cam and the end of the cylindrical portion via the center of the cap, and thereby, the cap may be formed. When unsealing, the gap between the cap body and the skirt wall is more suitably maintained by the opposing cams.

In the cap having the pill fur proof characteristic according to the third aspect of the present invention, the bridge other than the bridge having the fragile portion is configured to be cut near the cylindrical portion. In the present invention, when the cap is opened,
Bridges other than the bridge having the fragile portion are separated from the tubular portion and are integrated with the skirt wall. For this reason, the number of bridges that remain integrated with the cap body is reduced, and safety in handling the cap body is enhanced.

In the cap having the pill fur proof characteristic according to the fourth aspect of the present invention, a plurality of ribs are provided on the inner surface of the skirt wall so as to be in close contact with the outer surface of the container on which the cap is mounted. The skirt wall serves to prevent the relative rotation with respect to the container.

In the structure for engaging a cap with a container according to a fifth aspect of the present invention, the claw portion formed on the inner surface of the skirt wall engages with the projection formed on the container when the cap is rotated in the opening direction. Thus, the container and the skirt wall are securely fitted.

In the engagement structure of the cap and the container according to the sixth aspect of the present invention, the surface of the protruding piece facing the claw portion is inclined downward from the opening side of the container and gradually away from the claw portion. It is an inclined surface. For this reason, when the cap is rotated in the opening direction, the claw portion and the inclined surface of the protruding piece slide.
For this reason, a force is applied to the skirt wall, which is pressed down substantially uniformly (in a direction away from the cap body) in the entire circumferential direction, and the skirt wall is pressed down horizontally and reliably without being partially deformed.

In the engagement structure for a cap and a container according to a seventh aspect of the present invention, in the invention of the eighth aspect, the surface of the claw portion facing the inclined surface of the projecting piece is made substantially parallel to the inclined surface. ing. Therefore, when the cap is rotated in the opening direction,
The inclined surface of the claw portion and the inclined surface of the protruding piece slide smoothly, and a force is exerted on the skirt wall to be more reliably pushed down substantially evenly along the entire circumferential direction, and the skirt wall is partially It can be pushed down horizontally and more reliably without deformation.

In the structure for engaging a cap and a container according to an eighth aspect of the present invention, in the invention of the eighth aspect, a curved portion is formed above a portion of the claw portion facing the inclined surface of the protruding piece. When the cap is rotated in the opening direction, the curved portion of the claw portion and the inclined surface of the protruding piece slide smoothly, and the skirt wall is more reliably pushed down substantially evenly along the entire circumferential direction. And the skirt wall is pushed down horizontally without any partial deformation.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. Cap 10 with pill fur proof characteristics
(Hereinafter, this may be simply referred to as a cap 10.) As shown in FIG. 3, the opening 42A of the mouth and neck 42 of the container 40 is closed. As shown in FIG. 1, the cap 10 includes a cap body 20 and a skirt wall 30. The cap main body 20 has a top wall 22 having a circular shape when viewed from above in FIG. 1, and includes a cylindrical portion 24 hanging down from a peripheral portion of the top wall 22. Tube part 24
A female screw 24A is formed on the inner surface of the container 40. The female screw 24A is adapted to screw with a male screw 42B formed on the mouth and neck portion 42 of the container 40 shown in FIG.

At the lower end of the cylindrical portion 24 in FIG.
B and 24C are formed, whereby the cam 25 is formed, and the inclined surface 27 is connected to the notch 24C. The cam 25 has an inclined surface 25A that extends linearly without having a curved surface.
Is inclined upward in the rotation direction of the cap body 20 (the rotation direction when the cap 10 is opened).

Further, the cam 25 has a horizontal surface 25B extending in the left-right direction of FIG. 1 continuously with the inclined surface 25A, and is formed continuously with the extending end of the horizontal surface 25B. It has a vertical surface 25C. This vertical surface 25C
Extend vertically in FIG.

Although not shown in FIG. 1, the cam 25 is also provided at the lower end of the cylindrical portion 24 at a position facing the cam 25. The cylindrical portion 24 has a plurality of bridges 28A, 28B,
28C, 28D, 28E, 28F are provided, and the tubular skirt wall 30 is connected to the tubular portion 24 via these bridges 28A to 28F.

One end of the bridge 28A is integrated with a horizontal surface 25B of the cam 25, and its width dimension (the left-right dimension in FIG. 1) extends from the skirt wall 30 side to the cylindrical section 24 side. It is getting longer gradually. That is, the skirt wall 30 side of the bridge 28A is a weak portion, and the bridge 28A is easily broken at the weak portion. Meanwhile, bridge 28
The width dimension of B to 28F is gradually shortened from the skirt wall 30 side to the tube portion 24 side, and is easily broken at the tube portion 24 side.

The cylindrical portion 2 on the upper end surface of the skirt wall 30
4 are located at positions corresponding to the notches 24B and 24C.
4 and 36 are formed. The cam 34 and the cam 36 are formed with inclined surfaces 34A and 36A parallel to the inclined surface 25A of the cam 25 and the inclined surface 27 of the notch 24C. The cam 34 has a horizontal surface 34 continuous with the inclined surface 34A.
B and a vertical surface 34C continuous with the horizontal surface 34B. The cam 36 has a horizontal surface 36B continuous with the inclined surface 36A, and a vertical surface 36C continuous with the horizontal surface 36B. The horizontal surfaces 34B and 36B are:
It extends in the horizontal direction of FIG.
C extends in a substantially vertical direction (vertical direction) in FIG.

On the inner surface of the skirt wall 30, a plurality of (twelve in this embodiment) claws 32 extend at equal intervals along the circumferential direction as shown in FIG. 3, a plurality of ratchet teeth 42C as projections provided on the mouth and neck portion 42 corresponding to the claw portions 32 so as to correspond to the claw portions 32, so that the skirt wall 30 relatively rotates with the container 40. Acts to prevent.

As shown in FIG. 4, a rib 44 extends from the inner surface of the skirt wall 30. These ribs 4
Four ribs 4 are provided at equal intervals in the circumferential direction of the skirt wall 30, and each rib 44 is in close contact with the outer peripheral portion of the mouth and neck portion 42 with the cap 10 fitted to the container 40. It has become. These ribs 44 are provided on the skirt wall 30
Of the skirt wall 30 and the ratchet teeth 42C, and the fitting of the skirt wall 30 to the container 40 is further improved.

Claw 32 of ratchet tooth 42C
5 is an inclined surface 42D as shown in FIG. That is, the inclined surface 42D is inclined downward from the upper side (opening side of the container 40) in FIG. The surface of the claw portion 32 facing the inclined surface 42D of the ratchet tooth 42C extends along the up-down direction in FIG.

The operation of this embodiment will be described below. Container 4
1 when opening the cap 10 fitted to the
Is rotated in the opening direction with respect to the skirt wall 30. Thereby, the bridge 28
A through 28F are cut (in this cut, the bridge 28A is broken at the brittle bridge and the skirt wall 30
And is integrated with the cylindrical portion 24. Further, the inclined surface 25A of the cam 25 and the inclined surface 27 of the notch 24C formed on the cylindrical portion 24 slide on the inclined surface 34A of the cam 34 and the inclined surface 36A of the cam 36 formed on the skirt wall 30. While moving upward, the skirt wall 30 stays at that position without rotating together with the cap body 20 with the pawl portion 32 and the ratchet teeth 42C meshing.

As a result, the cap body 20 is pushed upward, that is, in a direction away from the skirt wall 30, and the skirt wall 30 is pressed and moved downward, so that the cap body 20 and the skirt wall 30 are separated from each other. (The state of FIG. 2). Here, even if the cap main body 20 is rotated in the closing direction, the cap main body 20 is kept separated from the skirt wall 30, so that the fact that the cap 10 has been opened can be clearly recognized. In the state of FIG. 2, since the bridge 28A faces the vertical surface 34C of the cam 34, even if the cap body 20 is rotated in the closing direction, the vertical surface 34C
2 is securely held, and the cam does not return to the original state.

Further, in the opening operation of the cap 10, the inclined surface 42D is formed on the ratchet teeth 42C along the circumferential direction of the container 40 (the mouth and neck portion 42),
As shown in FIG. 5A, when the inclined surface 42D and the opposing surface 32A of the claw portion 32 of the skirt act on the claw portion 32 in the direction of the arrow A with the opening operation, due to the shape of the inclined surface 42D. A force in the direction of the arrow B acts on the claw portion 32 and slides while slightly deforming the upper portion of the claw portion. For this reason, a force (arrow B) is exerted on the skirt wall 30 substantially uniformly downward (in the direction away from the cap body 20) along the entire circumferential direction, and the skirt wall 30 is pushed down horizontally and securely. (FIG. 5B).

FIG. 6 is a cross-sectional view showing the operation of the opposing surface 32 and the inclined surface 42D in another embodiment. That is, the shapes of the facing surface 32 and the inclined surface 42D are as shown in FIG.
However, as shown in the cross-sectional view of FIG. 6, the facing surface 32 and the inclined surface 42D may be inclined so as to be substantially parallel (FIG. 6A). A curved portion may be formed by chamfering the upper surface 32B of the opposing surface 32 in FIG. 5 toward the inclined surface 42D (FIG. 6B). In any case, when the cap 10 is opened, the force in the arrow direction A acts on the skirt wall 30 to push down the skirt wall 30 substantially uniformly in the arrow direction B (the direction separating from the cap body 20) along the entire circumferential direction. Skirt wall 3
0 can be pushed down horizontally and reliably. Also,
The number of the ratchet teeth 42C having the inclined surface 42D is not particularly limited, and it is needless to say that the ratchet teeth 42C can be appropriately formed at an arbitrary position.

[0041]

According to the present invention, the gap between the cap and the skirt wall can be increased by opening the cap, and even if the cap is rotated again in the closing direction, the original action is obtained by the action of the cam. It is possible to provide a cap having a pill fur proof characteristic capable of clearly recognizing the opening fact without returning to the position.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a cap having pill fur proof characteristics according to the present invention.

FIG. 2 is an operation diagram of FIG. 1;

FIG. 3 is a cross-sectional view showing a state in which a cap having pill fur proof characteristics according to the present invention is fitted to a container.

FIG. 4 is a view of the cap body as viewed from its opening side.

FIG. 5 is a perspective view showing an example of a meshing state between a claw portion and a ratchet tooth.

FIG. 6 is a cross-sectional view showing another example of the meshing state between the pawl portion and the ratchet teeth.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cap with pill fur proof characteristic 20 Cap body 30 Skirt wall 40 Container 42C Ratchet teeth (projection piece) 44 Rib

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-109864 (JP, A) JP-A-60-34347 (JP, A) JP-A-61-217358 (JP, A) 131362 (JP, U) Actually open Sho 61-147747 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) B65D 35/00-55/16

Claims (8)

(57) [Claims] 1. A cap body having a top wall having a cylindrical portion extending from a peripheral edge of the top wall, and a cylindrical skirt wall hanging down from an extended end of the cylindrical portion via a plurality of bridges. In a cap having a pill fur proof characteristic, a portion facing the bridge side end of the skirt wall and a portion facing the end of the cylindrical portion slide with each other when the cap is opened, and the skirt wall and Rutotomoni provided a cam having an inclined surface for guiding a direction away each of said cap body to each other, it is formed on at least the skirt wall
The surface opposite to the inclined surface of the cam is extended almost vertically.
And one of the bridges
One has a fragile part on the skirt wall side and the cap
Breaks at the fragile part when opening and faces the vertical surface
A cap with pill fur proof characteristics, characterized in that the cap is configured to reach a position where the pill fur is proof. 2. The pill fur proof characteristic according to claim 1, wherein two cams formed on the skirt wall and the cylindrical portion are connected to each other, and a bridge is formed at an intermediate portion of the connected cams. Cap. 3. A bridge other than a bridge having the fragile portion is a cap with a pilfer-proof characteristics of claim 1 or 2 Claims configured to cut in the vicinity of the cylindrical portion. On the inner surface according to claim 4, wherein the skirt wall, the cap is provided with a pilfer-proof characteristics of any one of claims 3 to claims 1 provided with a plurality of ribs in a state of close contact with the outer surface of the container to be mounted cap. Wherein said claims 1 to and projecting piece is set forth in any one cap formed on the outer surface of the container to be mounted in 4, is formed on the inner surface of the skirt wall of the cap at least said cap unsealing direction And a claw that engages with each of the protruding pieces when rotated. 6. The projecting piece according to claim 5 , wherein the surface of the projecting piece facing the claw portion is an inclined surface which is inclined downward from the opening side of the container and gradually away from the claw portion. Engagement structure between cap and container. 7. The engagement structure between a cap and a container according to claim 6 , wherein a surface of the claw portion facing the inclined surface of the protruding piece is substantially parallel to the inclined surface. 8. A curved portion is formed on the upper side of the portion facing the inclined surface of the protrusion in the claw portions claim 6
An engagement structure between the cap and the container according to the above.