Container cap

Abstract

To provide a container cap capable of providing good sealability with a container body and comprising a packing which can be easily replaced by a hand.SOLUTION: A container cap 1 that is detachably attached to a mouth and neck portion 41 of a container body 4 includes a cap body 2 that is made up of a top plate 20 that covers the mouth and neck portion 41 of the container body 4 and a peripheral wall 21 that is held hanging from an outer edge portion of the top plate 20, and cooperates with the top plate 20 to define and form an insertion space 24 for the mouth and neck portion 41 of the container body 4 inside thereof, and a packing 3 provided on the top plate 20 and abutting against a protruding end 42 of the mouth and neck portion 41 of the container body 4 to seal the mouth and neck portion 41 of the container body 4. The packing 3 has an annular body 31 that abuts against the protruding end 42 of the mouth and neck portion 41 of the container body 4, and a knob portion 32 that can be removed from the top plate 20.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a container cap that is detachably attached to the neck portion of a container.

Background Art

[0002] Conventionally, containers that can be reused by refilling the contents have been widely used. As such a container, for example, a container including a container body that houses the contents as disclosed in Patent Document 1 and a cap that is detachably attached to the neck portion of the container body is known. However, since it may be stored with the contents or carried in a bag or the like for use, a high sealing property between the container cap and the container body is required.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The sealing property between the container cap and the container body can be ensured by improving the adhesion of the container cap to the container body. An example thereof is shown in FIGS. 4(a) to 4(c). Note that the upper part of FIGS. 4(a) to 4(c) is a bottom view of the container cap, and the lower part is a view showing a state in which a cross section of the container cap is attached to the neck portion of the container body.

[0005] The container cap 100 in FIG. 4(a) has a top plate 101 and a peripheral wall 104 that is vertically held and suspended from the outer edge portion of the top plate 101. By fitting an inner ring 102 that is vertically held and suspended from the top plate 101 along the inner peripheral surface of the neck portion 201 of the container body 200, the container body 200 is configured to be sealed.

[0006] The container cap 100 shown in Figure 4(b) consists of a cap body 105 having a top plate 101 and a peripheral wall 104 suspended and held from the outer edge of the top plate 101, and a sealing material 103 (packing sheet) made of an elastic material provided on the lower surface of the top plate 101. The container body 200 is sealed by making the sealing material 103 tightly adhere to the upper end (opening) of the neck portion 201 of the container body 200.

[0007] Furthermore, the container cap 100 shown in Figure 4(c) consists of a cap body 105 having a top plate 101 and a peripheral wall 104 suspended and held from the outer edge of the top plate 101, and an annular sealing material 106 (packing ring) made of an elastic material inserted between the cap body 105 and a ring portion 107 suspended and held from the top plate 101. The container body 200 is sealed by bringing the sealing material 106 into contact with the upper end of the neck portion 201 of the container body 200.

[0008] However, the container cap 100 shown in Figure 4(a) has a narrow gap between the inner ring 102 and the peripheral wall 104, making it difficult to clean even if contents enter the gap, and water droplets may remain after cleaning, leading to unsanitary conditions. In addition, the inner ring 102 may bend or break when attaching or detaching the container cap 100 to the container body 200, reducing its sealing ability, which also posed a problem in terms of durability.

[0009] The container cap 100 shown in Figures 4(b) and 4(c) had a problem in that contents and water droplets from washing could easily get into the space between the sealing materials 103 and 106 and the cap body 105 (between the top plate 101 and between the peripheral wall 104), making it unsanitary. The sealing materials 103 and 106 were also problematic because they were difficult to remove and attach by hand since they were bonded or tightly attached to the cap body 105.

[0010] Therefore, the present invention aims to provide a container cap that can provide a high level of airtightness with the container body and is equipped with a gasket that can be easily replaced by hand. [Means for solving the problem]

[0011] The container cap of the present invention, developed to achieve the above objective, A container cap that is detachably attached to the neck of the container body, A cap body comprising a top plate that covers the neck of the container body, and a peripheral wall that hangs down and is held at the outer edge of the top plate, and which works together with the top plate to define an insertion space for the neck of the container body inside, The container has a packing provided on the top plate that abuts against the protruding end of the neck of the container body and seals the neck of the container body, The packing has an annular body that abuts against the protruding end of the neck of the container body and a handle that allows it to be attached to and removed from the top plate. The top plate is suspended and held toward the insertion space of the neck of the container body, and has a pair of opposing arc-shaped ribs. The annular body has a pair of inner edges that fit to the outer wall surfaces of the pair of arc-shaped ribs and detachably hold the packing to the top plate, The aforementioned knob portion is, Between the pair of arc-shaped ribs, It extends toward the opposite position of the annular body, and at least one end is the annular body the aforementioned inner edge This leads to, and, The pair of arc-shaped ribs It is characterized by comprising a bridge piece that allows the installation and removal of the packing by inserting a finger into the space formed between it and the packing and directly grasping it with the finger.

[0013] Furthermore, it is preferable that the container cap of the present invention has a projection that hangs down and is held toward the insertion space at the neck of the container body. [Effects of the Invention]

[0015] According to the container cap of the present invention, a gasket is provided on the top plate of the cap body, and the gasket has an annular body that abuts against the tip of the neck of the container body and a handle, thereby sealing the container body by the tight contact between the annular body and the tip of the neck of the container body, and the gasket can be easily removed from the cap body by pulling the handle with one's fingers. Therefore, according to the present invention, since the packing can be removed from the cap body and the cap body can be cleaned, no contents, cleaning water, etc. remain between the packing and the cap body (top plate and peripheral wall), which is hygienic.

[0016] Further, according to the container cap of the present invention, since the gripping portion is composed of a bridge piece that extends toward the opposing position of the annular body and at least one end thereof is connected to the annular body, the packing can be easily removed from the cap body while firmly gripping the gripping portion with a finger, and the packing can be pushed into and attached to the top plate of the cap body. Therefore, the removal and attachment of the packing are facilitated, and the packing can be easily replaced.

Brief Description of the Drawings

[0017] [Figure 1] It is a view showing an embodiment of a container cap according to the present invention. (a) is a plan view, (b) is a bottom view, and (c) is a cross-section taken at the A-A position of (b), showing the state of being attached to the container body. [Figure 2] It is a view showing another embodiment of the packing constituting the container cap according to the present invention. [Figure 3] It is a view showing another embodiment of the container cap according to the present invention. (a) is a plan view, (b) is a bottom view, and (c) is a cross-section taken at the B-B position of (b), showing the state of being attached to the container body. [Figure 4] It is a view showing the structure of a conventional container cap (upper part: bottom view, lower part: a view showing the state where the cross-section of the container cap is attached to the container body). (a) is an example in which an inner ring is provided on the top plate, (b) is an example in which a sheet material is provided on the entire lower surface of the top plate, and (c) is an example in which an annular sheet material is provided on the lower surface of the top plate.

Embodiments for Carrying Out the Invention

[0018] Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a diagram showing an embodiment of a container cap according to the present invention, where (a) is a plan view, (b) is a bottom view, and (c) is a diagram showing a cross section at the A-A position in FIG. 1(b) in a state where it is attached to the container body. Reference numeral 1 in FIG. 1 is a container cap. The container cap 1 is composed of a cap body 2 and a packing 3. Reference numeral 4 is a container body for detachably attaching the container cap 1 according to the present invention. In this embodiment, a case where the mouth-neck portion 41 of the container body 4 has a cylindrical shape will be described as an example.

[0019] The cap body 2 includes a disk-shaped top plate 20 and a cylindrical peripheral wall 21 that is vertically held at the outer edge of the top plate 20. The top plate 20 and the peripheral wall 21 define an insertion space 24 for the mouth-neck portion 41 of the container body 4 inside thereof. In this embodiment, the cap body 2 has a cylindrical shape, but it is not limited thereto, and various shapes such as an elliptical shape, a rectangular shape, and a polygonal shape can be used. Further, the cap body 2 can be made of a synthetic resin, but all or a part of it may be made of a metal member.

[0020] The top plate 20 is vertically held toward the insertion space 24 of the mouth-neck portion 41 of the container body 4 and has a pair of arcuate ribs 22 facing each other. The ribs 22 are for detachably holding the packing 3 by being in close contact with the inner edge of the annular body 3 of the packing 3 described later by the elastic force of the packing 3 without adhering the packing 3 to the lower surface of the top plate 20. In this embodiment, as an example of the rib 22, a pair of arcuate ribs are shown in accordance with the inner edge shape (a pair of arcuate shapes) of the annular body 31 of the packing 3 shown in FIG. 1, but it is not limited thereto. The rib 22 can be appropriately changed, such as being composed of a plurality of rib pieces or being angled in accordance with the inner edge shape of the packing 3 (annular body 31). Note that the outer edge of the annular body 31 and the peripheral wall 21 may be brought into close contact with each other by the elastic force of the packing 3 to hold the packing 3. In this case, the rib 22 with which the inner edge of the annular body 31 comes into close contact may or may not be provided.

[0021] The peripheral wall 21 of the cap body 2 has a female threaded portion 23 on its inner circumferential surface. By screwing this female threaded portion 23 onto a male threaded portion 43 provided on the outer circumferential surface of the neck portion 41 of the container body 4, as shown in Figure 1(c), the container cap 1 can be detachably attached to the container body 4. In this embodiment, the case in which the container cap 1 is screwed onto the container body 4 is shown as an example, but it is not limited to this, and for example, the container cap 1 may be attached to the container body 4 by undercut fitting.

[0022] The packing 3 is made of an elastic material such as rubber or resin and is detachably held on the underside of the top plate 20 of the cap body 2 via ribs 22. The packing 3 has an annular body 31 formed along the outer edge of the top plate 20 and a knob portion 32 extending from a part of the annular body 31 toward the annular body 31 at the opposite position. The end faces of the annular body 31 and the knob portion 32 (the end face on the insertion space 24 side of the mouth neck portion 41 of the container body 4) are located on the same plane. In this case, the packing can be manufactured by the simple method of cutting (punching) a single sheet-like material.

[0023] The annular body 31 is formed to abut against the protruding end 42 of the neck portion 41 of the container body 4. In this embodiment, it is formed in an annular shape so as to abut against the entire surface of the circular protruding end 42, which is the upper end surface of the neck portion 41 of the container body 4. Therefore, the shape of the annular body 31 is appropriately changed to match the shape of the neck portion 41 so as to abut against the protruding end 42 of the neck portion 41 of the container body 4.

[0024] Furthermore, when the container cap 1 is attached to the container body 4, the annular body 31 is sandwiched between the lower surface of the top plate 20 of the cap body 2 and the protruding end 42 of the neck portion 41 of the container body 4. This seals the upper end (opening) of the neck portion 41 of the container body 4, preventing the contents of the container body 4 from leaking out.

[0025] In the embodiment shown in Figure 1, the knob 32 consists of a bridge piece that connects from a part of the annular body 31 through the center of the cap body 2 to the annular body 31 at the opposite position. However, as shown in Figure 2, it may also be a cantilever type that connects to only one end of the annular body 31. By forming the handle portion 32 from a part of the annular body 31 toward its opposite position, a space S is formed between the annular body 31 and the handle portion 32, as shown in Figures 1 and 2. The handle portion 32 can be grasped by inserting a finger into this space S, and the packing 3 can be easily removed from the cap body 2 by firmly grasping the handle portion 32 with a finger and pulling. Furthermore, when attaching the packing 3, the inner edge of the annular body 31 of the packing 3 can be fitted along the rib 22 provided on the top plate 20 of the cap body 2 while firmly grasping the handle portion 32 with a finger, thereby fixing and holding the packing 3 to the top plate 20.

[0026] Figure 3 shows another embodiment of a container cap according to the present invention, where (a) is a top view, (b) is a bottom view, and (c) is a cross-section at position BB in Figure 3(b) with the cap attached to the container body. In the container cap 1 of this embodiment, a projection 33 is provided on the handle portion 32, which hangs down toward the insertion space 24 of the neck portion 41 of the container body 4. The projection 33 is for removing the packing 3 from the cap body 2 by grasping and pulling it with the fingers, and has a protruding length that allows it to be firmly grasped and pulled with the fingertips. In Figure 3, the projection 33 is provided at approximately the radial center position of the handle portion 32, but it is not limited to this, and the installation position can be changed as appropriate. [Industrial applicability]

[0027] The container cap of the present invention can be widely used as a cap for containers that hold contents such as food and beverages, cosmetics, pharmaceuticals, and chemicals. [Explanation of symbols]

[0028] 1. Container cap 2 Cap body 20 top plate 21 Peripheral wall 22 Ribs 23 Female thread section 24 Insertion space 3. Packing 31 Ring-shaped body 32. Thumb part 33 Protrusion 4. Container body 41. Oral and Neck Region 42. Promontory 43 Male threaded section 100 container caps 101 Top plate 102 Inner Ring 103 Sealant 104 Peripheral wall 105 Cap body 106 Sealant 107 Ring section 200 Container body 201 Oral and cervical region

Claims

1. A container cap that is detachably attached to the neck of the container body, A cap body comprising a top plate that covers the neck of the container body, and a peripheral wall that hangs down and is held at the outer edge of the top plate, and which works together with the top plate to define an insertion space for the neck of the container body inside, The container has a packing provided on the top plate that abuts against the protruding end of the neck of the container body and seals the neck of the container body, The packing has an annular body that abuts against the protruding end of the neck of the container body, and a handle that allows it to be attached to and removed from the top plate. The top plate is provided with a pair of arc-shaped ribs that hang downwards toward the insertion space of the neck of the container body and face each other, The annular body is provided with a pair of inner edges that are fitted to the outer wall surfaces of the pair of arc-shaped ribs, respectively, and that detachably hold the packing to the top plate. The gripping portion is characterized by being a bridge piece that extends between the pair of arc-shaped ribs toward the opposing position of the annular body, with at least one end connected to the inner edge of the annular body, and allowing the packing to be attached and removed by inserting fingers into the space formed between the pair of arc-shaped ribs and directly gripping with those fingers.

2. The container cap according to claim 1, characterized in that the knob portion has a projection that hangs down and is held toward the insertion space of the neck of the container body.

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