JP2000009230A - Packing structure for closed container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing structure for closed containers that is prevented from slipping off them and is easily assembled. SOLUTION: A closed container, which comprises a waterproof casing 1 having an opening 1a in its front, and a lid 2c placed on the front of the casing 1 to close the opening 1a, is formed in its front with a packing groove 1b enclosing the opening 1a. Packing 3 inserted into the packing groove 1b has at its entire tip-side edge a lid-pressed part 3a pressed closely on the lid 2c under elastic deformation, and at its one side an anti-slip protrusion 3b pressed closely on the corresponding internal wall of the packing groove 1b under elastic compression.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing structure for a closed container, and more particularly to a packing structure for a closed container that seals a gap between a housing and a lid.

[0002]

2. Description of the Related Art As a packing for sealing a gap between a housing and a lid, there is a technique described in JP-A-7-310828.

According to the publication, as shown in FIG. 4, a packing groove 12a surrounding an opening 12b is provided on the front surface of a housing 12 of a closed container. The packing groove 12a is formed in a dovetail shape so that the packing 11 does not fall off.

In FIG. 4, the packing 11 has a lower portion formed substantially in the same shape as the packing groove 12a, an upper portion formed in a bifurcated shape having a tip extending outward, and a whole cross-sectional shape substantially Y-shaped. Is formed.

A groove 11a extending from the concave portion of the packing 11 to the center thereof is provided, and the spacer 1 inserted into the groove 11a is provided.
3, the lower part of the packing 11 is inflated and pressed against the inner wall surface of the packing groove 12a to prevent the packing 11 from falling off.

A recess (not shown) formed inside the upper portion of the packing 11 is
When the lid is closed, the lid is in close contact with the lid, and when the lid is closed, the volume of the concave portion is reduced, so that the lid is sucked.

[0007]

As described above, in the packing structure of the above-mentioned conventional closed container, the packing 11 is brought into close contact with the lid each time the lid is closed, and the gap between the housing 12 and the lid is sealed and waterproofed. However, since the concave portion at the tip of the packing 11 is attracted to the lid, the packing 11 is pulled in the opening direction of the lid when the lid is opened.

Therefore, when the spacer 13 is inserted into the groove 11a in the assembling operation, if the insertion depth of the spacer 13 varies or the spacer 13 is not inserted, the spacer 13 pulled in the opening direction of the lid falls off. There is a possibility that.

In addition, in the assembling operation, since the operation of inserting the spacer 13 after the insertion of the packing 11 is necessary, there is a problem that the operation is complicated and inefficient.

An object of the present invention is to provide a packing structure for a sealed container which does not fall off and which is easy to assemble.

[0011]

According to the first aspect of the present invention,
A packing structure for a closed container, wherein the closed container has a housing having an opening on the front surface and a lid that abuts on the front surface of the housing and closes the opening, and surrounds the opening on the front surface of the housing. A packing groove is provided around, and a lid pressure contact portion that closely contacts with the lid with elastic deformation is extended to the entire leading edge of the packing inserted into the packing groove, and on a side surface of the packing, A projection for preventing falling is provided on the inner wall surface of the packing groove while being elastically compressed.

[0012] In the invention described in claim 2, the packing is:
It is characterized in that it is a molded rubber material having an integral structure.

According to the first aspect of the present invention, only by inserting the packing into the packing groove, the protrusion for preventing falling comes into pressure contact with the inner wall surface of the packing groove with elastic compression. Even if an external force acts, there is no danger of falling off from the packing groove. Therefore, the operation of inserting the packing is simplified, and there is no possibility that the packing may fall off due to a variation in operation as in the conventional example. Further, when the lid is closed, the lid pressure contact portion comes into close contact with the lid with elastic deformation, so that the container is hermetically sealed and waterproof.

According to the second aspect of the present invention, there is an advantage that the packing is a single part and is provided at low cost by molding.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a specific example of an embodiment of a packing structure of a closed container according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, the closed container according to the present invention comprises a waterproof casing 1 and a detachable unit 2 inserted therein.

As shown in FIG. 3, which is a cross-sectional view taken along line AA of FIG. 1, an opening 1a is provided on the front surface of the housing 1, a lid receiving recess 1c is formed around the opening 1a, and a lid receiving recess 1c is formed. A packing groove 1b surrounding the opening 1a is provided on the bottom surface of 1c.

On the other hand, at the end of the attachment / detachment unit 2, lids 2c for closing the opening 1a by contacting the bottom surface of the lid receiving recess 1c are provided. As shown in FIG. The detachable lever 2b thus protruded and retracted by the lever operation portion 2a provided on the surface of the lid 2c, and is engaged and disengaged from the inner surface of the side wall of the lid receiving recess 1c.

The packing 3 to be inserted into the packing groove 1b is molded from a rubber material, and a lid press contact portion 3a is extended at the entire front end edge in the longitudinal direction. Is provided along with the compression allowance d. Therefore,
The lid press-contact part 3 is in close contact with the lid 2c with elasticity.

In the width direction of the packing 3, since the projections 3b for preventing falling off which are bent from the side surfaces of the packing 3 are provided, the width dimension of the packing 3 is larger than the groove width of the packing groove 1b. Therefore, the packing 3 has the packing groove 1b.
In addition, when inserted in the direction of arrow B in FIG. 2, the falling-off preventing projection 3b adheres to the inner wall surface of the packing groove 1b with elastic compression. On the other hand, a large frictional resistance is generated.

Moreover, the falling-off preventing projection 3b is bent and extended obliquely in a direction opposite to the direction in which the packing 3 is inserted, and the tip of the falling-off preventing projection 3b is inserted into the packing groove 1b when inserted into the packing groove 1b. Is elastically deformed on the inner wall surface. Therefore, when an external force in the falling direction is received, a force for expanding the falling prevention protrusion 3b outward is generated, and the resistance to the external force in the falling direction further increases.

Since the packing 3 is a molded rubber material having an integral structure, it can be provided at low cost.
Is inserted by a simple operation of inserting into the packing groove 1b, so that the assembling operation is simpler and easier than the conventional packing which requires the insertion of the spacer.

[0023]

As described above, according to the first aspect of the present invention, it is possible to provide a packing structure of a sealed container which can be inserted into a packing groove only by inserting a packing. The assembly work is simpler and easier than the work to be performed. In addition, the lid press-contact part adheres tightly to the lid with elastic deformation, and the projection for preventing falling comes into close contact with the inner wall surface of the packing groove with elastic deformation, so that the gap between the lid and the housing is completely sealed to prevent falling off Since the projection for use shows a large frictional resistance to an external force in the direction of pulling out the packing, it is possible to provide a packing structure of a sealed container capable of preventing the packing from falling off.

According to the second aspect of the present invention, since the packing structure of the closed container is constituted only by the packing which is an integral structure and can be produced by molding, the packing structure of the conventional container which requires the spacer is used. In addition to being inexpensive, the packing has a large resistance to an external force in the pulling-out direction, so that the packing groove does not need to be formed in a dovetail shape, which facilitates processing.

[Brief description of the drawings]

FIG. 1 is a perspective view of an essential part showing a closed state of a container provided with a packing structure of a closed container of the present invention.

FIG. 2 is a perspective view of an essential part showing a cover opened state of FIG. 1;

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a vertical sectional view of a main part showing a conventional example of a packing structure of a closed container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 1a Opening 1b Packing groove 1c Lid receiving recess 2 Detachable unit 2a Lever operating part 2b Detachable lever 2c Lid 3 Packing 3a Lid pressure contact part 3b Protrusion for preventing falling off

Claims (2)

[Claims] 1. A sealed container having a housing having an opening on a front surface and a lid abutting on the front surface of the housing to close the opening, wherein a packing groove surrounding the opening is formed on the front surface of the housing. Installed, at the entire leading edge of the packing inserted into the packing groove,
A lid press-contact portion that closely contacts the lid with elastic deformation is extended, and a drop-off prevention protrusion that presses against the inner wall surface of the packing groove with elastic compression is provided on a side surface of the packing. The packing structure of the sealed container characterized by the above. 2. The packing structure for an airtight container according to claim 1, wherein the packing is a molded rubber material having an integral structure.