JPH0958757A - Airtight container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely keep the airtightness between a container body and the cover body even in uneven closing, by forming the turned-over piece of a circular lip of an elastic body fixed to the inside of the cover body to have a smaller diameter as it goes to the front end and making the front end smaller than the diameter of the outer peripheral face of the container body. SOLUTION: A circular packing lip 3 is fitted to the inner peripheral face of a cover body 2. The lip 3 is constituted of a rising piece 3b erected to the opening/closing direction of the cover body 2, a turned-over part 3c folded back to the inside of container, and a turned-over piece 3d having the front free end. These are made of an elastic synthetic resin or rubber as a unit. The rising piece 3b and the turned-over piece 3d of the lip 3 are connected to each other to have a U-shaped section. The front end of the turned-over piece 3d is a free end against the cover body 2. The diameter of the front end of the turned-over piece 3d is smaller than the diameter of edge 2b forming the outer peripheral face 1c of the container body 1 and the diameter of the turned-over part 3c is made larger than the diameter of the edge 1b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for accommodating a cosmetic material containing a volatile substance such as a volatile solvent therein.

[0002]

2. Description of the Related Art Conventionally, as a container in which a container body and a lid are connected by a hinge and an airtight function is provided by using an elastic packing, a rubber is simply provided at a joint portion between the container body and the lid. Generally, a method in which a packing such as the above is attached and the packing is interposed between the container body and the lid to elastically deform the packing.

As one of the methods, it is conceivable that the container body and the lid are hermetically joined to each other in the lateral direction of the container.
An airtight holding container in which a packing such as an O-ring is attached to the peripheral side surface of the container body is proposed in JP-A-61-190455. This container has a groove formed on the peripheral side surface of the container body with an O
A ring is fitted and a rib is integrally formed inside the lid so as to correspond to the O-ring. Then, by closing the lid, the inner peripheral surface of the rib of the lid becomes O of the container body.
The O-ring contacts the ring and presses the O-ring in the lateral direction of the container to ensure airtightness between the lid and the container body.

[0004]

However, according to the above-mentioned conventional technique, the airtightness of the container is borne only by the elasticity of the O-ring. Therefore, when the lid and the container body are misaligned due to the play of the hinge, or when the container body and the lid body are not formed with good precision and distortion occurs, the gap between the O-ring and the rib may be lost. There was a problem in that the pressure applied to was not uniform and the airtightness was impaired.

Therefore, an object of the present invention is to propose a container capable of reliably maintaining the airtightness between the container body and the lid even if the closure of the container body and the lid varies.

[0006]

A hermetically sealed container according to the present invention is a container having an elastic body for hermetically sealing the space between the container body and the lid by fastening the container body and the lid with a hinge. The elastic body is attached to the inside of the lid by fixing a part of the elastic body, and the elastic body rises in the opening / closing direction of the lid and is folded back inside the container at the folding portion, and the tip is a free end. It has an annular lip having a U-shaped cross section by the folded piece. Then, the folded piece of the lip has a smaller diameter from the folded portion toward the tip, and the tip of the folded piece is smaller than the diameter of the outer peripheral surface of the container body, and when the lid is closed,
The above-mentioned problem is solved by the folded piece of the lip contacting the outer peripheral surface of the container body and sealing the space between the lid body and the container body.

Further, the folded-back portion of the lip is movable toward the rising side, and when closing the lid,
After the tip of the folded piece comes into contact with a part of the container body, the folded portion is sequentially moved to the rising piece side,
It is also possible to provide an airtight holding container in which the rising one side is turned up and turned over to the one side while closely contacting the outer peripheral surface of the container body.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described with reference to FIGS. The container A of the present embodiment is a compact container that hermetically holds cosmetics using a volatile solvent.

As shown in FIG. 1, the compact container A is
A container body 1 made of synthetic resin and a lid body 2 also made of synthetic resin are fastened at one end using a rotating pin 7, and the lid body 2 is configured to be openable and closable by using this as a hinge. . Engagement protrusions 1a and engagement claw pieces 2a are formed on the other ends of the container body 1 and the lid body 2, respectively. When the lid body 2 is closed, the engagement claw pieces 2a become the engagement protrusions 1a. Hook lid 2
Is not open. On the other hand, when the lid body 2 is opened, the user can release the engagement by pulling up the engagement claw piece 2a with a finger.

A large-opened recess 1e is formed in the container body 1, and a decorative plate 6 filled with a cosmetic material 5 such as cosmetic powder is fitted and fixed in the recess 1e. The outer peripheral edge of the edge portion 1b of the container body 1 is lowered by one step, and an outer peripheral surface 1c to which a lip 3 described later is fitted is formed at this step portion.

A lip 3 which is an annular packing is attached to the inner peripheral surface of the lid body 2. This lip 3 is a lid 2
An end portion 3a fixed to the container, a rising piece 3b rising in the opening / closing direction of the lid body 2, and a folded portion 3 folded back inside the container.
c and a folded-back piece 3d whose tip is a free end, which are integrally formed of elastic synthetic resin or rubber. This lip 3 has an original end 3a.
The outer flange formed on the cover 2 is sandwiched between the fixing ring 4 and the inner surface of the lid 2, and the fixing ring 4 is fixed to the lid 2 by ultrasonic bonding.

The lip 3 includes a rising piece 3b and a folding piece 3b.
d has a U-shaped cross section connected by a folded portion 3c, and the tip of the folded piece 3d is a free end with respect to the lid 2. The folded piece 3d is inclined toward the inside of the container, and the diameter of the tip is smaller than the diameter of the edge portion 1b where the outer peripheral surface 1c of the container body 1 is formed, and the diameter of the folded portion 3c is the edge portion 1b. The diameter is set to be larger than that (Fig. 2
(See (a)). Further, a space 3f is formed between the rising piece 3b and the folding piece 3d with the folding portion 3c interposed therebetween (same as above).

The operation of the container A of this embodiment will be described with reference to FIG. The figure (a) shows a state in which the lid is closed to a midpoint, and the figure (b) shows a state in which the lid is completely closed. Note that these drawings are partial cross-sectional views represented by a cross-sectional line orthogonal to the cross-sectional line in FIG. 1, and the hinge portion and the engaging portion between the container body 1 and the lid body 2 are not shown.

As shown in FIG. 1A, when the lip 3 is not in contact with the edge 1b of the container body 1, the lip 3
The folded back piece 3d is inclined inside the container.

Next, as shown in FIG. 2 (b), when the lid 2 is completely closed, the lip 3 contacts the edge 1b of the container body 1 and the inclination of the folding piece 3d guides it. The lip 3 is externally fitted to the container body 1b while expanding the diameter of the folded piece 3d. Therefore, the restoring elastic force due to this deformation and the folded portion 3c act as a spring, so that the folded piece 3d
Can be brought into close contact with the outer peripheral surface 1c of the container body 1 to maintain an airtight state.

At this time, since the space 3f between the rising piece 3b of the lip 3 and the folding piece 3d allows non-uniformity of the deformation of the folding piece 3d, the lid 2 and the container main body 1 are individually attached to each product. Even if there is a variation in the closing of the container, the space 3f serves as a buffer and the folded piece 3d can be reliably brought into close contact with the outer peripheral surface 1c of the container body 1.

On the other hand, when the lid 2 is opened by releasing the engagement between the engaging claw piece 2a and the engaging protrusion 1a, the lip 3 is separated from the outer peripheral surface 1c and the airtight state is released. At this time, the inside of the container is temporarily depressurized, but the lip 3 having elasticity is used.
The rising piece 3b is recessed inward to relieve the depressurized state and the lid 2 can be opened smoothly.

A second embodiment of the present invention will be described with reference to FIG. The container B according to the present embodiment has an outer peripheral surface 1c of the container body 1.
Is a container having an inclined surface. Hereinafter, also in the other embodiments, the same configurations and operations as those of the first embodiment are designated by the same reference numerals in the drawings, and the description is cited.

As shown in FIG. 3, the edge portion 1b of the container body 1
The outer peripheral surface 1c formed at is an inclined surface having a smaller diameter toward the upper side. Therefore, when the lid 2 is closed and the lip 3 is brought into contact with the outer peripheral surface 1c, the folded piece 3d of the lip 3, which also has an inclined surface, comes into surface contact with the outer peripheral surface 1c with a uniform pressure, which is more reliable. It has a structure that can maintain an airtight state.

A third embodiment of this embodiment will be described with reference to FIG. The container C according to the present embodiment is a container in which the end portion of the lip 3 is extended and a second contact portion is formed here to enhance airtightness.

As shown in FIG. 4, the tip of the folded piece 3d of the lip 3 further extends inside the container to form an inner flange 3e, and an annular projection 3g is formed on the lower surface of the inner flange 3e. . Then, when the lid 2 is closed, the folded piece 3d of the lip 3 causes the outer peripheral surface 1 of the container body 1
In addition to contacting c to maintain an airtight state, the above-mentioned protrusion 3g
Comes into contact with the edge 1b of the container body 1 to form a second contact portion there, and the container is doubly sealed. At this time, due to the elastic force of the lip 3, the projection 3g is in contact with the edge portion 1b of the container body 1 with a predetermined pressure.

A fourth embodiment of the present invention will be described with reference to FIG. The container D according to this embodiment has a folded portion 3 of the lip 3.
c can be moved with the opening and closing of the lid 2, and the lip 3
Is a container that enables contact with the container body 1 over a wider area.

FIG. 5A shows a state in which the lid body 2 is lightly closed with respect to the container body 1 and the folded piece 3d of the lip 3 is in contact with the outer peripheral surface 1c of the container body 1. The lip 3 is formed of an elastic material that is softer than the lip 3 of the other embodiment described above, and as shown in the figure, the rising piece 3b is longer than the folding piece 3d.

In this state, the tip of the folded piece 3d of the lip 3 is tightly set with respect to the outer peripheral surface 1c of the container body 1, and when the folded piece 3d abuts the outer peripheral surface 1c of the container body 1, The folding piece 3d stops at a predetermined position.

Then, as shown in FIG. 3B, when the lid body 2 is further closed, the folding piece 3d of the lip 3 does not move, so the force for closing the lid body 2 is applied to the folding portion 3c.
The urging force cannot be resisted, and the rising piece 3b is turned over to the folded piece 3d side, that is, the inside of the container. The folded-back portion 3c sequentially moves to the rising piece 3b side, and the rising piece 3b turned inside is turned into a folded-back piece 3d and comes into close contact with the outer peripheral surface 1c of the container body 1. Furthermore, the container D of this embodiment
Then, the groove 1d is formed on the lower side of the outer peripheral surface 1c of the container body 1, and the folded portion 3c is fitted into the groove 1d so as to be in close contact with the groove 1d, so that the container D is more reliably sealed.

Thus, according to the container D of this embodiment,
As the lid 2 is closed, the folded-back portion 3c can be sequentially fed to the rising piece 3b side, and the outer peripheral surface 1 of the container body 1 can be fed.
The c and the lip 3 can be brought into contact with each other over a wide area, and the container D can be reliably sealed.

At this time, the lip 3 is also used in this embodiment.
Since the space 3f is formed between the rising piece 3b and the folding piece 3d, the space 3f is formed as in the other embodiments described above.
Acts as a buffer, and even if the closing accuracy of the container D varies, the folded piece 3d can be reliably brought into close contact with the outer peripheral surface 1c of the container body 1.

When the container D is opened, the folded-back piece 3d of the lip 3 is gradually separated from the outer side of the outer peripheral surface 1c of the container body 1, and the folded-back portion 3c is moved to the rising piece 3b side to restore the original shape. To do. At this time, the inside of the container D is in a depressurized state, but the elastic rising piece 3d is also recessed inside the container to relieve the depressurized state, so that the lid body 2 can be smoothly opened.

Although the above-described first to fourth embodiments describe the compact container which is a cosmetic container, the present invention is not limited to this, and can be widely applied to containers that require airtightness and waterproofness. It is generic.

[0030]

As described above, the airtight holding container of the present invention can be converted into a force for pressing the folded piece of the lip against the outer peripheral surface of the container body simply by closing the lid.
Therefore, even if lateral displacement occurs between the container body and the lid due to the play of the hinge between the container body and the lid or the deformation of the container body and the lid, the airtightness between the container body and the lid is reliably maintained. be able to.

[Brief description of drawings]

FIG. 1 is a side sectional view of a compact container according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of the operation of the compact container according to the first embodiment of the present invention.

FIG. 3 is an explanatory view of the structure and operation of the compact container of the second embodiment of the present invention.

FIG. 4 is an explanatory view of the structure and operation of the compact container of the third embodiment of the present invention.

FIG. 5 is an explanatory view of the structure and operation of the compact container of the fourth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Container main body, 1c ... Outer peripheral surface, 2 ... Lid body, 3 ... Lip (elastic body), 3b ... Standing piece, 3c ... Folding part, 3d
... folding piece, 3f ... space, 4 ... fixing ring, 5 ... cosmetics, 6 ... makeup plate A ... container (first embodiment), B ... container (second embodiment), C
... Container (third embodiment), D ... Container (fourth embodiment)

Claims (2)

[Claims] 1. A container having an elastic body for hermetically sealing the space between the container body and the lid body by fastening the container body and the lid body with a hinge, wherein the elastic body is located inside the lid body. The elastic body is attached by fixing the portion, and the elastic body has a U-shaped section by a rising piece rising in the opening / closing direction of the lid and a folding piece folded back inside the container at the folding portion and having a free end at the tip. Has a circular ring-shaped lip, and the folded piece of the lip has a smaller diameter from the folded portion toward the tip, and the tip of the folded piece has a diameter smaller than the diameter of the outer peripheral surface of the container body. An airtight holding container, characterized in that when the body is closed, the folded piece of the lip contacts the outer peripheral surface of the container body to seal between the lid body and the container body. 2. The folded portion of the lip is movable to the rising piece side, and when the lid is closed, the tip of the folded piece comes into contact with a part of the container body, and then the folded portion. The airtight holding container according to claim 1, wherein the rising one side is brought into close contact with the outer peripheral surface of the container body while the rising one side is turned over to the folded back one side.