cap

Abstract

To provide a snap-on cap that is easy to remove from the container. [Solution] The cap 10, which is configured to be attached to and detached from the mouth 85 of the container body 4, comprises a main body portion 11 having a cylindrical shape that widens in diameter towards the end, a top plate 12 having a pentagonal shape that closes the end on the smaller diameter side of the main body portion 11 and is provided so as to extend radially from the end, and a protrusion 21 that protrudes from the inner circumferential surface of the main body portion 11 and is configured to engage with an annular protrusion 88 provided on the container body 4 so that the main body portion 11 can be attached to and detached from the container body 4 along the direction of the axis of the cylindrical body.

Description

Technical Field

[0001] The present invention relates to an engaging cap for a container.

Background Art

[0002] For example, a container with a cap made of synthetic resin that can hold a liquid is known. When using synthetic resin, inexpensive, durable, and lightweight containers, as well as containers having various shapes, can be easily manufactured. Therefore, containers with caps made of various synthetic resins are used in various applications. Regarding such containers with caps, various improvements have been made for ease of use, realization of required functions, and improvement of manufacturing efficiency.

[0003] In an engaging cap, generally, the attachment and detachment of the container body and the cap are performed by moving the cap along the central axis of the cap. For example, Patent Document 1 discloses the structure of a cap to be engaged with a container body. In such a container with an engaging cap, the ease of attaching and detaching the cap is one element of ease of use.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Since the cap described in Patent Document 1 has a conical shape, when the cap is removed and placed on a flat surface such as a table, it may roll. Further, when trying to remove the cap with a finger, the finger may slip on the conical wall surface, and there may be a problem that it is difficult to remove. Therefore, an object of the present invention is to provide an engaging cap that is easy to remove from the container body and difficult to roll after removal. [Means for solving the problem]

[0006] According to one aspect of the present invention, a cap configured to be attached to and detached from the mouth of a container body comprises a main body having a cylindrical shape that widens in diameter towards the bottom, a top plate having a pentagonal shape that closes the smaller diameter end of the main body and extends radially from that end, and a protrusion that protrudes from the inner circumferential surface of the main body, configured to engage with irregularities provided on the container body so that the main body can be attached to and detached from the container body along the axis direction of the cylindrical body. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide an engagement-type cap that is easy to remove from a container. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing a schematic example of the configuration of a container according to one embodiment. [Figure 2A] Figure 2A is a front view showing an example of the configuration of a cap according to one embodiment. [Figure 2B] Figure 2B is a plan view showing an example of the configuration of a cap according to one embodiment. [Figure 2C] Figure 2C is a bottom view showing an example of the cap configuration according to one embodiment. [Figure 3] Figure 3 is an end view showing an example of the configuration of a cap according to one embodiment. [Modes for carrying out the invention]

[0009] <Container composition> One embodiment will be described with reference to the drawings. This embodiment relates to a container for holding liquids, for example. The liquid to be held may be a viscous food such as a sauce. Figure 1 is a perspective view showing a schematic example of the configuration of a container 1 according to this embodiment. As shown in this figure, the container 1 comprises a container body 2, a dispensing member 3, and a cap 10 that attaches to and detaches from the dispensing member 3. Each part of the container 1 is formed of, for example, synthetic resin. In the following description, as shown in Figure 1, the side with the container body 2 will be referred to as the lower side, and the side with the dispensing member 3 to which the cap 10 is attached will be referred to as the upper side.

[0010] The container body 2 is configured to hold contents. The shape of the container body 2 can be any shape. In the example shown in Figure 1, the container body 2 has a hollow frustoconical shape. The container body 2 has an opening on the upper side in Figure 1, and a screw (not shown) is formed in the opening.

[0011] The dispensing member 3 is configured to be attached to the opening of the container body 2 described above. The dispensing member 3 has a mounting portion 81 with a screw (not shown) on the inside, and a nozzle portion 82 provided above the mounting portion 81. The screw of the mounting portion 81 is screwed into the screw provided in the opening of the container body 2. The dispensing member 3 has a shape in which a hollow frustoconical nozzle portion 82 is positioned on the upper surface of the mounting portion 81, which is a flat surface. An opening 86 is provided on the tapered upper bottom surface of the nozzle portion 82, and the tip of the nozzle portion 82 forms a mouth portion 85. When the dispensing member 3 is attached to the container body 2, the opening 86 is configured to communicate with the inside of the container body 2. Therefore, the container 1 is configured so that the contents inside the container body 2 are dispensed through the opening 86 of the mouth portion 85 of the dispensing member 3. In this way, the container body 2 and the dispensing member 3 constitute a container body 4, which is the part of the container 1 excluding the cap 10, and is configured to contain and dispense contents.

[0012] <Cap composition> The cap 10 is a cover cap that corresponds to the shape of the nozzle portion 82 of the dispensing member 3, and is configured to cover the nozzle portion 82 and close the opening 86 of the dispensing member 3. The outer surface of the nozzle portion 82 of the dispensing member 3 has protrusions and indentations that engage with the cap 10. Specifically, the outer surface of the nozzle portion 82 is provided with an annular projection 88 that circles parallel to the upper surface of the mounting portion 81. The cap 10 is configured to engage with the annular projection 88 of the dispensing member 3 and be fixed in a state that covers the nozzle portion 82 and the opening 86 of the dispensing member 3. In this way, the cap 10 is configured to be fitted and removed from the dispensing member 3 of the container body 4 by moving along its central axis.

[0013] The shape of the cap 10 will be described in detail. Figure 2A is a front view showing an example of the cap 10's configuration. Figure 2B is a top view showing an example of the cap 10's configuration. Figure 2C is a bottom view showing an example of the cap 10's configuration. Figure 3 is an end view showing an example of the cap 10's configuration, and is an end view along the line III-III shown in Figure 2B.

[0014] As shown in Figures 2A and 2B, the cap 10 has a main body 11 having a frustum-shaped side profile and a top plate 12 positioned at the top base of the frustum. The main body 11 has a cylindrical shape that widens towards the end. The larger diameter end of this cylinder is open so as to overlap the nozzle 82 of the dispensing member 3. The top plate 12 is formed larger than the top base of the frustum formed by the main body 11 so as to protrude beyond it. That is, the top plate 12 closes the smaller diameter end of the main body 11 and is provided to extend radially from that end. The planar shape of the top plate 12 is pentagonal. Furthermore, as is clear from Figure 2B in this embodiment, the cap 10 is configured such that the projection of the top plate 12 onto a projection plane perpendicular to the axis of the main body 11 is located inside the projection of the larger diameter end of the main body 11 onto that projection plane.

[0015] As shown in Figures 2C and 3, the inner circumferential surface of the main body 11 is provided with inwardly protruding projections 21. The projections 21 are provided in correspondence with the annular projections 88 of the nozzle portion 82 of the dispensing member 3, so that the cap 10 is fixed to the dispensing member 3 by engaging with the annular projections 88 of the nozzle portion 82 of the dispensing member 3. In this embodiment, four projections 21 are provided, positioned at 90-degree angles from each other. The number of projections 21 is not limited to this and may be any number.

[0016] The cap 10 in this embodiment is configured to seal the opening 86 of the dispensing member 3 when it is placed over the dispensing member 3. For this reason, the inner surface (bottom surface) of the top plate 12 is provided with an inwardly (downward) convex annular portion 31, which is configured to be in close contact with the inner peripheral edge of the member that forms the mouth 85. When the cap 10 is fitted onto the dispensing member 3, the member that forms the mouth 85 of the dispensing member 3 fits into the gap 32 between the annular portion 31 and the main body portion 11, and the opening 86 of the dispensing member 3 is closed by the annular portion 31 and the inner central portion 33 of the top plate 12.

[0017] <Functions of each part of the cap> In this embodiment, the cap 10 has a body portion 11 with a smooth frustoconical side shape. That is, the outer diameter of the body portion 11 decreases monotonically from the larger diameter side to the smaller diameter side. For this reason, if the top plate were not provided to protrude from the body portion, that is, if the cap were simply frustoconical in shape, when trying to remove the cap from the dispensing member 3 by pulling it upward along its axis, there would be no part for the fingers to grip, requiring a strong gripping force. In contrast, in the cap 10 of this embodiment, the top plate 12 protrudes from the upper base surface of the frustoconical that forms the body portion 11, so this part acts as a grip, making it easy to remove the cap 10 from the dispensing member 3.

[0018] Further, the planar shape of the top plate 12 of the cap 10 of the present embodiment is not circular but pentagonal. Therefore, when the cap 10 removed from the pouring member 3 is placed on a flat surface such as a table, any side of the pentagon will contact the flat surface such as the table. For this reason, the cap 10 can be stably placed without rolling on a table or the like.

[0019] Also, when the container 1 is filled with the content and shipped as a product, the entire container 1 covered with the cap 10 may be covered with a shrink film. In the cap 10 of the present embodiment, since the top plate 12 is smaller than the large-diameter end portion which is the lower end of the main body portion 11, the shrink film is stretched substantially along the shape of the cap 10, and the gap between the shrink film and the main body portion 11 of the cap 10 is small. As a result, compared with a case where the top plate is larger than the large-diameter end portion of the main body portion and a large gap is generated between the shrink film and the main body portion of the cap, when the cap 10 according to the present embodiment is used, the shrink film is less likely to break.

[0020] As described above, the present invention has been described with reference to the preferred embodiments. However, it is needless to say that the present invention is not limited only to the above-described embodiments, and various modifications can be made within the scope of the present invention.

Explanation of Reference Numerals

[0021] 1 Container 2 Container body 3 Pouring member 4 Container body 10 Cap 11 Main body portion 12 Top plate 21 Protrusion 31 Annular portion 32 Gap 33 Inner central portion

Claims

1. A cap that is designed to be attached to and detached from the mouth of a container, The main body has a cylindrical shape that widens towards the bottom, A pentagonal top plate is provided that closes the smaller diameter end of the main body and extends radially from that end, The main body portion is configured to engage with the grooves and protrusions provided on the container body, and the protrusions protruding from the inner circumferential surface of the main body portion are configured to engage with the grooves and protrusions provided on the container body, so that the main body portion can be attached to and detached from the container body along the direction of the axis of the cylindrical body. A cap equipped with a cap.

2. The cap according to claim 1, wherein the outer diameter of the main body decreases monotonically from the larger diameter side to the smaller diameter side.

3. The cap according to claim 1 or 2, wherein the top plate is formed such that the projection of the top plate onto a projection plane perpendicular to the axis is located inside the projection of the larger diameter end of the main body onto the projection plane.

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