JP7154176B2 - cap - Google Patents

Description

The present invention relates to caps.

For example, as shown in Patent Literature 1 below, a cap body having a capped tubular shape to be attached to the mouth of a container body in which contents are contained, and a lid body for opening and closing the top wall of the cap body are provided. The top wall portion is formed with a discharge cylinder having an inner side serving as a discharge port for the contents, and the inner peripheral surface of the discharge cylinder is formed with a protruding plate protruding radially inward and forming a slit along the circumferential direction. A cap is known in which a plurality of protruding plates are formed around a portion connected to the inner peripheral surface of a discharge cylinder so as to be elastically deformable upward.
In this cap, when the positive pressure in the container body or the flow pressure of the contents is exerted on the lower surface of the protruding plate, the protruding plate elastically deforms upward and the slit expands to open the contents. is discharged.

JP 2018-76101 A

However, with the conventional cap, there is room for improvement in preventing the contents in the container body from leaking out through the discharge port when the lid is closed.
In addition, depending on the hardness of the material that forms the cap, when positive pressure or the like in the container body is applied to the lower surface of the protruding plate, the protruding plate is less likely to deform, and the opening of the slit is slow, allowing the contents to flow smoothly. There was a possibility that it could not be discharged to

The present invention has been made in consideration of such circumstances, and is capable of smoothly discharging the contents, and also allows the contents in the container body to leak outside through the discharge port when the lid is closed. An object of the present invention is to provide a cap capable of preventing the leakage.

In order to solve the above problems and achieve such objects, the cap of the present invention comprises a cap body having a capped tubular shape to be attached to the mouth of a container body in which contents are stored; and a lid for opening and closing a top wall of the cap, wherein the top wall is formed with a discharge cylinder having an inner side serving as a discharge port for the contents, and the lid is provided with the discharge cylinder. An outer fitting cylinder that is detachably fitted to the discharge cylinder in a state of being elastically deformed and reduced in diameter is provided, and a protruding plate that protrudes radially inward from the inner peripheral surface of the discharge cylinder, A plurality of the protruding plates are arranged along the circumferential direction and are adjacent to each other in the circumferential direction, and the ends in the circumferential direction are positioned at the same position in the circumferential direction and are spaced apart in the axial direction. It is

According to this aspect of the invention, the outer fitting cylinder of the lid body is detachably fitted on the discharge cylinder in a state in which the discharge cylinder is elastically deformed and reduced in diameter. By bringing the distal ends of the projecting plates facing each other closer to each other in the radial direction, it is possible to narrow or eliminate the gap between them. As a result, the contents in the container body can be prevented from leaking out through the discharge port.
Since the circumferential ends of the projecting plates that are adjacent to each other in the circumferential direction are positioned at the same circumferential position, the discharge port can be simply opened without increasing the internal pressure of the container body with the lid open. It is possible to make it difficult to eject the contents from the ejection port in the state of only facing downward. On the other hand, since the circumferential ends of the protruding plates that are adjacent to each other in the circumferential direction are spaced apart in the axial direction, when the internal pressure of the container body is increased, the material forming the cap is reduced. Regardless of the hardness, the contents in the container body can be smoothly passed through the gap to reach above the protruding plate and discharged to the outside.

Here, the projecting plate may extend upward as it extends radially inward.

In this case, since the protruding plate extends upward as it goes inward in the radial direction, it is possible to dispense the contents in the container body and return the container body to the upright posture after the contents have been discharged. In each case, it is possible to prevent the contents from accumulating at the connecting portion between the lower surface of the protruding plate and the inner peripheral surface of the discharge cylinder, so that the contents can be smoothly discharged and the contents can be smoothly discharged into the container body. It is possible to realize both of recovering in
Since the protruding plate extends upward as it goes inward in the radial direction, when a positive pressure or the like in the container body is exerted on the lower surface of the protruding plate, the protruding plate will move toward the inner peripheral surface of the discharge cylinder. It is possible to make it easier to elastically deform upward around the connecting portion.

Further, the outer fitting cylinder is formed integrally with the lid body, the projecting plate is integrally formed with the discharge cylinder, and includes a hinge portion that connects the cap body and the lid body, and the cap body and the lid body. The main body, the lid, and the hinge portion may be integrally formed.

In this case, since the cap main body, lid body, hinge portion, outer fitting tube, and protruding plate are all integrally formed, the number of parts can be reduced.

A push-in protrusion projecting radially outward is formed on the outer peripheral surface of the discharge cylinder, and the push-in protrusion is pushed inward in the radial direction on the inner peripheral surface of the outer fitting tube. Further, axial positions of respective connection portions between the protruding plate and the inner peripheral surface of the discharge cylinder may be the same.

In this case, since the axial positions of the projection to be pushed in and the connecting portion between the protruding plate and the inner peripheral surface of the discharge cylinder are equal to each other, the projection to be pushed in is located on the inner circumference of the outer fitting cylinder. When pushed inward in the radial direction by the surface, the protruding plate can be easily displaced radially inward to a large extent, and with the lid body closed, the contents in the container body can be displaced. It is possible to reliably prevent leakage to the outside through the discharge port.

According to the present invention, the contents can be smoothly discharged, and the contents in the container main body can be prevented from leaking outside through the discharge port with the lid body closed.

1 is a vertical cross-sectional view of a cap shown as a first embodiment according to the present invention; FIG. FIG. 2 is a perspective view showing a main part of a cap body in the cap of FIG. 1; FIG. 10 is a longitudinal sectional view along the circumferential direction showing the main part of the cap body of the cap shown as the second embodiment according to the present invention;

A cap 1 according to a first embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the cap 1 of this embodiment includes a topped cylindrical cap body 11 attached to the mouth portion W1 of the container body W in which the contents are stored, and a top wall portion of the cap body 11. The cap body 11, the lid body 13, and the hinge part 17 are integrally formed.

The cap 1 is made of, for example, polypropylene or polyethylene. The contents contained in the container main body W include, for example, liquids or fluids with relatively high viscosity. At least the trunk portion of the container body W is formed so as to be elastically deformable in the radial direction.

In the illustrated example, the lid body 13 is formed in a capped cylindrical shape, and the lid body 13 and the cap main body 11 are arranged coaxially with the common axis. Hereinafter, this common axis will be referred to as the central axis O, the direction intersecting the central axis O as seen from the axial direction along the central axis O will be referred to as the radial direction, and the direction that goes around the central axis O will be referred to as the circumferential direction. In the axial direction, the top wall portion 18 side of the lid body 13 is referred to as the upper side, and the open end side of the peripheral wall portion 19 of the cap body 11 is referred to as the lower side.

A female screw portion is formed on the inner peripheral surface of the peripheral wall portion 19 of the cap body 11 to be screwed into the mouth portion W1. The lower surface of the ceiling wall portion 12 of the cap main body 11 is in continuous and close contact with the upper opening edge of the mouth portion W1 over the entire circumferential length. The top wall portion 12 is formed with a discharge cylinder 14 having a content discharge port 12a inside. The discharge cylinder 14 is arranged coaxially with the central axis O. As shown in FIG. The discharge cylinder 14 may be arranged eccentrically with respect to the central axis O, for example, may be arranged on the opposite side of the hinge portion 17 that sandwiches the central axis O in the radial direction.

A plurality of protruding plates 16 that protrude radially inward are arranged on the inner peripheral surface of the discharge cylinder 14 along the circumferential direction. The projecting plate 16 is formed integrally with the discharge cylinder 14 . As shown in FIG. 2, the protruding plate 16 has a triangular shape when viewed from the axial direction, one of the three vertices is located at the inner end (tip) in the radial direction, One of them is arranged so as to be positioned on the inner peripheral surface of the discharge cylinder 14 . The size of the protruding plate 16 in the radial direction is larger than the size of the protruding plate 16 in the circumferential direction. The projecting plate 16 extends upward as it goes radially inward. The tip of the protruding plate 16 is located below the upper opening edge of the discharge cylinder 14 .

The protruding plate 16 is formed so as to be elastically deformable upward around a portion connected to the inner peripheral surface of the discharge cylinder 14 . The protruding plate 16 is elastically deformed upward by the positive pressure in the container body W or the flow pressure of the contents.
The shape of the protruding plate 16 viewed from the axial direction may be appropriately changed, for example, to a rectangular shape. The protruding plate 16 may extend straight in the radial direction, or may extend downward as it goes radially inward.
The protruding plate 16 may be formed so that it cannot elastically deform upward due to the positive pressure in the container body W or the flow pressure of the contents.

In this embodiment, the circumferential ends of the protruding plates 16 adjacent to each other in the circumferential direction are positioned at the same position in the circumferential direction and are spaced apart in the axial direction. In the illustrated example, the axial positions of the projecting plates 16 adjacent to each other in the circumferential direction are different. A plurality of protruding plates 16 positioned at a first position along the axial direction and a plurality of protruding plates 16 positioned at a second position along the axial direction different from the first position are arranged. The protruding plates 16 and the latter protruding plate 16 are alternately arranged in the circumferential direction. The axial distance between the circumferential ends of the protruding plates 16 adjacent to each other in the circumferential direction is the same over the entire radial direction.

Of the two projecting plates 16 adjacent to each other in the circumferential direction, the edge of the projecting plate 16 located on one side in the circumferential direction on the other side in the circumferential direction and the edge of the projecting plate 16 located on the other side in the circumferential direction in the circumferential direction The positions in the circumferential direction of the edges on one side of are coincident with each other. When viewed from the axial direction, no circumferential gap is provided between two protruding plates 16 that are adjacent to each other in the circumferential direction, and the plurality of protruding plates 16 are arranged without gaps along the circumferential direction. ing.

Of the two protruding plates 16 adjacent to each other in the circumferential direction, the protruding plate 16 positioned on one side in the circumferential direction has an end on the other side in the circumferential direction, and the protruding plate 16 positioned on the other side in the circumferential direction may overlap in the axial direction with one end in the circumferential direction. Also, two projecting plates 16 adjacent to each other in the circumferential direction may be spaced apart in the circumferential direction.

The plurality of protruding plates 16 are arranged such that the distal end portions of the protruding plates 16 face each other in the radial direction. Each position along the axial direction of the two protruding plates 16 facing each other in the radial direction is the same. A radial gap is provided between the distal end portions of the two projecting plates 16 that face each other in the radial direction. The two protruding plates 16 facing each other in the radial direction are symmetrical with respect to the same straight line extending in the radial direction when viewed from the axial direction.
In addition, each position along the axial direction of the two projecting plates 16 that face each other in the radial direction may be different from each other. The tip portions of two protruding plates 16 that face each other in the radial direction may be brought into contact with each other.

A push-in projecting portion 14 a is formed on the outer peripheral surface of the discharge cylinder 14 so as to protrude radially outward. The pushed-in protrusion 14a extends continuously over the entire length in the circumferential direction. The pushed-in protrusion 14a is formed in a curved surface that protrudes outward in the radial direction. The positions in the axial direction of the push-in protrusion 14a and the connecting portion between the protruding plate 16 and the inner peripheral surface of the discharge cylinder 14 are equal to each other. The axial size of the pushed-in protrusion 14 a is equal to the thickness of the protruding plate 16 .
It should be noted that the pushed-in projection 14 a may not be formed on the discharge cylinder 14 .

The cover 13 is provided with an outer fitting cylinder 15 detachably fitted onto the discharge cylinder 14 in a state where the discharge cylinder 14 is elastically deformed and reduced in diameter. The inner peripheral surface of the outer fitting cylinder 15 pushes the push-in projection 14a of the discharge cylinder 14 radially inward, thereby elastically deforming the discharge cylinder 14 to reduce its diameter. The inner peripheral surface of the outer fitting cylinder 15 is in continuous and close contact with the push-in protrusion 14a over the entire length in the circumferential direction, thereby sealing the discharge port 12a. A locked projection 15a is formed on the inner peripheral surface of the outer fitting cylinder 15 so as to protrude radially inward and is detachably undercut-fitted to the pushed-in projection 14a of the discharge cylinder 14 . The outer fitting cylinder 15 is formed integrally with the lid body 13 .

As described above, according to the cap 1 according to the present embodiment, the outer fitting cylinder 15 of the lid body 13 is detachably fitted onto the discharge cylinder 14 while the discharge cylinder 14 is elastically deformed and reduced in diameter. Therefore, with the lid body 13 closed, the distal ends of the protruding plates 16 facing each other in the radial direction can be brought closer to each other in the radial direction to narrow the distance therebetween. In combination with being externally fitted on the discharge cylinder 14, it is possible to prevent the contents in the container body W from leaking to the outside through the discharge port 12a.

Since the circumferential ends of the projecting plates 16 that are adjacent to each other in the circumferential direction are positioned at the same circumferential positions, the internal pressure of the container body W is not increased when the lid body 13 is open, and simply In a state in which the ejection port 12a is directed downward, it is possible to make it difficult to eject the contents from the ejection port 12a. On the other hand, since the circumferential ends of the projecting plates 16 that are adjacent to each other in the circumferential direction are spaced apart in the axial direction, the cap 1 is formed when the internal pressure of the container body W is increased. Regardless of the hardness of the material used, the contents in the container main body W can be smoothly passed through the gap to reach above the protruding plate 16 and be discharged to the outside.

Since the protruding plate 16 extends upward as it goes inward in the radial direction, it is possible to dispense the contents in the container body W and return the container body W to the upright position after the contents have been discharged. In each case, it is possible to make it difficult for the contents to stay in the connecting portion between the lower surface of the protruding plate 16 and the inner peripheral surface of the discharge cylinder 14, so that the contents can be discharged smoothly. Both collection into the container body W can be realized.
Since the protruding plate 16 extends upward as it goes inward in the radial direction, when a positive pressure or the like in the container body W is exerted on the lower surface of the protruding plate 16, the protruding plate 16 is pushed into the discharge tube. It is possible to make it easier to elastically deform upward around the connection portion with the inner peripheral surface of 14 .

Since the cap main body 11, lid body 13, hinge portion 17, outer fitting cylinder 15, and projecting plate 16 are all integrally formed, the number of parts can be reduced.

Since the axial positions of the projection 14 a to be pushed in and the connecting portion between the protruding plate 16 and the inner peripheral surface of the discharge cylinder 14 are the same, the projection 14 a to be pushed in is located on the outer fitting cylinder 15 . When pushed inward in the radial direction by the inner peripheral surface, the projecting plate 16 can be easily displaced radially inward by a large amount. It is possible to reliably prevent the contents inside from leaking to the outside through the discharge port 12a.

Next, a cap 2 according to a second embodiment of the invention will be described with reference to FIG.
In the second embodiment, the same reference numerals are assigned to the same components as in the first embodiment, the description thereof is omitted, and only the different points will be described.

In this embodiment, the projecting plate 16 is inclined so as to extend downward from one side to the other side in the circumferential direction. The axial positions of the edges 16a on one circumferential side of each of the plurality of projecting plates 16 coincide with each other at the same radial position, and the axial positions of the edges 16b on the other circumferential side of each of the plurality of projecting plates 16 coincide with each other at the same radial position.
Also in this embodiment, the same effects as those of the above-described embodiment are obtained.

The present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the scope of the invention.

For example, in the above-described embodiment, the lid 13 is connected to the cap main body 11 via the hinge portion 17 . Instead, a structure or the like in which it is detachably screwed to the cap body 11 may be adopted.
The discharge cylinder 14 may not be formed with the push-in projection 14a, and the outer fitting cylinder 15 may not be formed with the locked projection 15a.

The projecting plate 16 may be formed so as to be elastically deformable downward.
In this case, the body of the container body W is elastically deformed radially inward, and after the content is discharged from the discharge port 12a, the body is restored and deformed. By elastically deforming, it becomes possible to draw the contents in the discharge port 12a into the container main body W, thereby suppressing dripping.

A plug detachably fitted into the discharge cylinder 14 on the lower surface of the top wall 18 of the lid 13, and a contact projection closely contacting the upper end opening edge of the discharge cylinder 14 over the entire periphery so as to be separated. , and an insertion projection that is detachably inserted into a radial gap between the distal end portions of two protruding plates 16 that face each other in the radial direction.
In this case, it is possible to reliably prevent the contents in the container body W from leaking to the outside through the discharge port 12a while the lid 13 is closed.

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

Reference Signs List 1, 2 cap 11 cap main body 12 ceiling wall portion 12a discharge port 13 lid body 14 discharge tube 14a push-in protrusion 15 outer fitting tube 16 protruding plate 17 hinge portion W container body W1 mouth portion

Claims (4)

a truncated cylindrical cap body attached to the mouth of the container body containing the contents;
a cap that opens and closes the top wall of the cap body,
The top wall portion is formed with a discharge cylinder having an inner side serving as a discharge port for the contents,
The lid body is provided with an outer fitting cylinder that is detachably fitted onto the discharge cylinder in a state where the discharge cylinder is elastically deformed and reduced in diameter,
A plurality of protruding plates protruding radially inwardly are arranged along the inner peripheral surface of the discharge cylinder,
The cap, wherein the protruding plates adjacent to each other in the circumferential direction are arranged such that their circumferential ends are located at the same position in the circumferential direction and are spaced apart in the axial direction. 2. The cap according to claim 1, wherein said protruding plate extends upward as it extends radially inward. The outer fitting cylinder is formed integrally with the lid body,
The projecting plate is integrally formed with the discharge cylinder,
3. The cap according to claim 1, further comprising a hinge portion connecting said cap body and said lid, wherein said cap body, said lid and said hinge are integrally formed. A push-in protrusion projecting radially outward is formed on the outer peripheral surface of the discharge cylinder and is pushed radially inward into the inner peripheral surface of the outer fitting cylinder,
4. The axial position of each of the pushed-in protrusion and the connecting portion between the protruding plate and the inner peripheral surface of the discharge cylinder is equal to each other, according to claim 1. cap.

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