JPH08301325A - Tightly closing cap device - Google Patents

Abstract

PURPOSE: To provide a tightly closing cap device where the contact of an inner cap and outer cap is linear or small areal, even if contents, etc., stick to the inner cap or outer cap, they are removed away by the slide of the inner and outer caps against each other which is made to fit them together, and, further, a tight, stable seal is formed by the linear or small areal contact of the inner cap and outer cap, and additionally, because frictional resistance is small, the attachment/detachment of the outer cap is easy. CONSTITUTION: In a tightly closing cap device, an opening 12 is made in the front end of a container main body 2, the front end forms a conical part 10 noarrowing toward the opening 12 from the middle part of the container main body 2, and a cap part 4 is provided with a tapered face, which almost correspond to the opening 12 to fit in and abut on the opening. At least either the front end of the container main body 2 or tapered face is made of an elastic material, and, further, the device has a lock mechanism for firmly fixing the container main body 2 and cap part 4 together so that they are free to be detached from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid device for a container for powder or a viscous material, and more particularly to a closed lid device which is highly airtight and can be removably attached.

[0002]

BACKGROUND OF THE INVENTION Japanese Utility Model Publication No. 7-2440 discloses a hinge cap, an inner lid which is attached to a container opening, an outer lid which engages with the inner lid to close the opening, and the inner lid. And a connecting portion that hinge-connects the outer lid, and a configuration in which the cylindrical inner peripheral wall of the outer lid is fitted into an opening of the inner lid to hermetically close. Japanese Patent Fair 7-2502
The gazette relates to a lid, an inner lid with a spout attached to a container mouth, an outer lid that engages with the inner lid to close the opening, and an outer lid with a closing portion to close the lid. Disclosed is a configuration that includes a connecting portion that hinge-connects the inner lid and the outer lid, and that both the spout and the closed portion of the outer lid are slightly tapered and thickened, and have a substantially cylindrical shape. There is.

[0003]

In the structure of the closed lid device disclosed in the above-mentioned publication, the outer lid slidably fitted to the inner lid is cylindrical, and the inner lid and the outer lid are in surface contact with each other. And
There is a possibility that a content part will be attached to this contact part and a seal will not be formed, the frictional resistance will be great and the outer lid will be difficult to remove and attach, and the surface contact surface will be worn out, so that stable sealing cannot be performed for a long time. There's a problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the conventional closed lid device, in which the inner lid and the outer lid are in line contact or small area contact, and the inner lid or the outer lid is temporarily contacted. For example, even if powdered raw materials such as salt, pepper, powdered soy sauce, etc., or contents such as viscous raw materials such as miso are adhered, they are swept away by the sliding engagement of the inner lid and the outer lid. It is an object of the present invention to provide a closed lid device in which the outer lid and the outer lid form a strong and stable seal by line contact, and the friction resistance is small and the outer lid can be easily attached and detached.

[0005]

According to the present invention, an opening is provided at the tip of a container body, and the tip forms a conical portion that shrinks from an intermediate portion of the container body toward the opening. A tapered inclined surface that substantially coincides with and fits into the opening is provided, and at least one of the tip end portion of the container body and the tapered inclined surface of the lid portion is made of an elastic material, and the container body and the lid portion can be removed. A hermetically-sealed lid device, characterized in that a lock mechanism for fixing to the device is provided. Embodiments of the invention include
It is as follows. The peripheral portion of the opening is a substantially conical surface, and the tapered inclined surface of the lid portion is a substantially spherical surface. The peripheral portion of the opening is a substantially conical surface, and the tapered inclined surface of the lid portion has an annular ridge protruding portion in a plane orthogonal to the axis. The peripheral portion of the opening is substantially spherical, and the tapered inclined surface of the lid is substantially conical. The peripheral portion of the opening has an annular ridge protruding portion in a plane orthogonal to the axis, and the tapered inclined surface of the lid portion is a substantially conical surface.

[0006]

The tapered slant surface of the lid is fitted in contact with the peripheral edge of the opening formed at the tip of the container body formed in the conical portion, and at least one of them is elastically deformed and pressure-bonded. The lock mechanism maintains the sealed state by crimping.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A closed lid device according to an embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the closed lid device 1 of the first embodiment comprises a lid 4 pivotally supported by a hinge 6 on an upper portion of a bottomed cylindrical synthetic resin container body 2. In the container body 2, the conical portion 10 at the tip is frustoconical, and a circular opening 12 is provided at the top. The opening 12 is not limited to a circular shape, but a polygonal shape,
Alternatively, the shape may be provided with a bird's mouth. The inclination angle α of the upper surface of the truncated cone with respect to the vertical line V is not particularly limited, but is 5 to 30 °, preferably 15 to 2
0 ° is desirable, and this makes it possible to enhance the tightness of the container and at the same time to effectively scrape off the raw material adhering to the opening 12. The peripheral surface of the circular opening 12 has two inner conical surfaces 17 and two outer conical surfaces 18 that form a ridge line 16 where the central portions intersect at an obtuse angle. The lid portion 4 is made of synthetic resin, has a bottomed cylindrical shape, faces downward, and has an annular peripheral wall portion 20 which is substantially on the extension of the cylindrical side wall of the container body 2 and the diameter of the tip. Has a circular opening 12 and an intermediate cylindrical wall 22 of approximately the same diameter. The lower end surface of the intermediate cylindrical wall portion 22 is a conical inclined surface 25 having an inclination angle β of 20 to 80 °, preferably 40 to 60 ° with respect to the vertical line V of the upper surface of the truncated cone of the conical portion 10. This can improve the airtightness of the container and the scraping property of the raw material attached to the opening 12.

At least one of the conical portion 10 of the container body and the intermediate cylindrical wall portion 22 of the lid portion 4 is made of an elastic material. Examples of the elastic material include polyolefin resins such as polypropylene, polystyrene resins such as polystyrene, and polyester resins such as polyester. Further, when both are made of an elastic material, it is desirable to provide a difference in rigidity between them. A projecting portion 30 is formed on a boundary portion between the cylindrical side wall 26 of the container body 2 and the mouth portion 10 on a side facing the hinge 6, and a hinge 6 is formed on a lower end of the annular peripheral wall portion 20 of the lid portion 4. On the opposite side,
A hook 32 that engages with the projection 30 is formed, and the projection 3
A lock mechanism is formed by 0 and the hook portion 32. As shown in FIG. 2, the closed lid device 1 having the above-described configuration elastically abuts the ridge line 16 of the circular opening 12 of the container body 2 to the conical inclined surface 25 of the intermediate cylindrical wall portion 22 of the lid portion 4, and this state It is held by the locking mechanism of the protrusion 30 and the hook 32 to form a seal. The sealing lid device of the second embodiment is shown in FIG. 3, but the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the closed lid device of the second embodiment, the container body 2 is provided with a circular opening 112 at the top thereof, and the lower end surface of the intermediate cylindrical wall portion 122 of the lid portion 4 is a conical portion 110.
A conical inclined surface 125 having an inclination angle γ with respect to the vertical line V of the upper surface of the truncated cone of 30 to 75 °, preferably 45 to 60 ° is formed. When the sloped surface r is large, it becomes difficult to scrape off the raw material adhering to the opening 12, and when the sloped surface r is small, the sealing property of the container tends to be low. The lower end surface of the intermediate cylindrical wall portion 122 of the lid portion 4 has two inner conical surfaces 117 and two outer conical surfaces 118 that form a ridge line 116 where the central portions intersect at an obtuse angle.

The hermetically-sealing lid device of the third embodiment is formed by forming the peripheral edge surface of the circular opening 12 at the upper portion of the container body 2 of the hermetically-sealing lid device of the first embodiment into a spherical surface. The hermetically-sealing lid device according to the fourth embodiment is similar to the hermetically-sealing device according to the second embodiment.
The lower end surface of 2 is formed into a spherical surface.

[0010]

According to the hermetic lid device of the present invention, the inner lid and the outer lid are in line contact or in small area contact, and even if contents or the like are attached to the inner lid or the outer lid, the inner lid and the outer lid will not contact each other. It has the effect that it is swept away by the sliding engagement of the lid, and the inner lid and outer lid form line contact or small area contact to form a strong and stable seal, and the friction resistance is small and the outer lid can be easily attached and detached. .

[Brief description of drawings]

FIG. 1 is a perspective view of a sealing lid device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the closed lid device according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of a closed lid device according to a second embodiment of the present invention.

[Explanation of symbols]

 V vertical line 1 tapered mouth container 2 container body 4 lid 6 hinge 10 cone 12 circular opening 16 ridge 17 inner conical surface 18 outer conical surface 20 annular peripheral wall 22 intermediate cylindrical wall 25 conical inclined surface 26 cylindrical side wall 30 Projection 32 Hook

Claims (5)

[Claims] 1. An opening is provided at a tip portion of a container body, and the tip portion forms a conical portion that shrinks from an intermediate portion of the container body toward the opening, and a lid portion substantially coincides with the opening and is fitted into the lid portion. A tapered slanted surface that abuts is provided, and at least one of the tip end portion of the container body and the tapered slanted surface of the lid portion is formed of an elastic material,
Further, the hermetically-sealing lid device is provided with a lock mechanism for detachably fixing the container body and the lid portion. 2. A peripheral portion of the opening is a substantially conical surface,
2. The closed lid device according to claim 1, wherein the tapered inclined surface of the lid portion is a substantially spherical surface. 3. A peripheral portion of the opening is a substantially conical surface,
The hermetically sealed lid device according to claim 1, wherein the tapered slant surface of the lid portion has an annular ridge projecting portion in a plane orthogonal to the axis. 4. The closed lid device according to claim 1, wherein the peripheral portion of the opening is substantially spherical, and the tapered inclined surface of the lid is substantially conical. 5. The hermetic seal according to claim 1, wherein a peripheral edge portion of the opening has an annular ridge projecting portion in a plane orthogonal to the axis, and the tapered inclined surface of the lid portion is a substantially conical surface. Lid device.