JPH09303561A - Watertight structure of closed container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give watertightness by using an O-ring, and to realize a high watertightness and a small size by fixing a closed container to a flange as a lid by an adhesive. SOLUTION: A groove 4 for O-ring is formed on the outer periphery of a flange 2, a groove 5 for adhesive escape is formed by separating a partition 6 from the groove 4 for O-ring, an adhesive surface 7 is formed connecting to the groove 5 for adhesive escape, an adhesive 3 is applied to the adhesive surface 7 to fix the opening of a case 1 and the flange 2, and the excessive adhesive 3 is to flow in the groove 5 for an adhesive escape in the fixing work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watertight structure of an airtight container for making the watertightness of a lid fitting portion of the airtight container used in water such as the ocean.

[0002]

2. Description of the Related Art As a conventional watertight structure for an airtight container, there is provided a watertight structure in which an opening of an airtight container for mounting electronic parts and the like and a flange as a lid are connected by an adhesive.
It is known that an O-ring is arranged between an opening of a closed container and a flange which is a lid, and the flange is fixed to the closed container with a bolt. 4 to 6 are cross-sectional views of a conventional main part.

That is, as shown in FIG. 4, a flange 15 is provided through an adhesive 14 in an opening of a case 13 which is a closed container.
When fixing the bolts to each other, or as shown in FIG. 5, the bolts 18 are formed on the flanges formed by the case 16 and the flange 17, respectively.
And the nut 19 to fix and secure the flange 1
Grease (not shown) is applied to the groove 20 formed in
In the case where the ring 21 is arranged to provide watertightness between the case 16 and the flange 17, or as shown in FIG. 6, the case 22 and the flange 23 are fastened and fixed by a screw 24, Arrange an O-ring 26 coated with grease (not shown) in the groove 25 formed in the flange 23,
It is known that watertightness is provided between the case 22 and the flange 23.

[0004]

However, the watertight structure of each of the above-mentioned closed containers has the following problems. That is, in the structure using the adhesive, water-tightness may not be provided due to the faintness of the adhesive at the time of manufacturing, and there is a problem that many defective products are produced. There was a problem that the adhesive strength was reduced due to the stress, and a part of the adhesive was peeled off so that the watertightness could not be maintained.

On the other hand, when the O-ring is used, it is necessary to form the flange portion and fix it with the bolt and the nut, so that there is a problem that the size cannot be reduced. In addition, when fixing with a screw without forming a brim, it is difficult to balance the tightening of the screw, which causes a problem of poor assembly workability.If tightened in an unbalanced state,
There was a problem that the watertightness could not be taken because the closed container was deformed by the water pressure.

In order to achieve high watertightness and miniaturization, it is conjectured that an O-ring is used to provide watertightness, and a hermetically sealed container and a flange, which is a lid, are fixed to each other with an adhesive. However, in this case, the adhesive applied excessively during the assembling work flows into the groove for the O-ring, and
Prevent the free deformation of the O-ring by fixing the ring by adhesion.
There is a problem in that the watertightness is impaired by depriving the O-ring action, and the reliability of the watertightness is poor. For this reason, conventionally, such a structure could not be obtained.

[0007]

Therefore, in the watertight structure of the closed container of the present invention, an O-ring groove is formed on the outer periphery of the lid, and an adhesive escape groove is formed by separating a partition from the O-ring groove. , The adhesive escape groove is connected to form an adhesive surface, and the adhesive is applied to the adhesive surface to fix the opening and the lid of the closed container. I tried to flow into the escape groove. An O-ring for preventing the flow of the adhesive is preferably arranged in the adhesive escape groove. O
It is preferable that the ring groove and the adhesive escape groove are formed with a step, and the inner wall surface of the opening is also provided with a step following the step.

Further, an O-ring groove is formed on the inner wall of the opening of the closed container, an adhesive escape groove is formed with a partition from the O-ring groove, and the adhesive escape groove is connected to the adhesive surface. Alternatively, the adhesive may be applied to the adhesive surface to fix the opening and the lid of the closed container, and excess adhesive may flow into the adhesive escape groove during the fixing. Further, an O-ring groove is formed on the outer periphery of the lid, and when the lid is fitted into the closed container, the adhesive escapes to the inner wall of the opening of the closed container so as to be located outside the O-ring groove. Form a groove, form an adhesive surface by connecting to this adhesive escape groove, apply adhesive to the adhesive surface to fix the opening of the closed container and the lid, and at the time of that adhesion, extra adhesion The agent may flow into the adhesive escape groove.

It should be noted that at least one O-ring groove may be provided, but the number thereof is not limited to this, and may be two, for example. Further, the adhesive escape groove may be at least one, but the number of adhesive escape grooves is not limited to this, and may be two, for example, and the O-rings may not be arranged in all.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is a sectional view of an essential part, and FIG. 2 is an overall structural view. In the figure, a flange 2 which is a lid is fitted into an opening of a case 1 which is a closed container, and each is fixed with an adhesive 3 therebetween. The flange 2 has grooves 4 and 5
A partition 6 is formed on the outer periphery of the fitting surface from the inside with a space therebetween. The grooves 4 and 5 are concentrically provided to form a step, and a step that follows the step is also formed on the inner wall surface of the case 1. The operation of this step will be described later. Further, the adhesive surface 7 is connected to the groove 5 and
The flange 2 and the case 1 are formed respectively.

O-rings 8 and 8 are provided in the grooves 4 and 5, respectively.
9 are arranged. The O-rings 8 and 9 are in contact with the bottom surfaces of the grooves 4 and 5 and the inner wall surface of the case 1, respectively. Further, in the groove 4 and the O-ring 8,
Grease 10 is applied to each of the O-rings 8 in order to improve the sliding property. The groove 3 has a structure in which the adhesive 3 flows in and is dammed by the O-ring 9, and the O-ring 9 is fixed by the adhesive 3. Since the O-ring 9 is arranged to prevent the adhesive 3 from flowing in, it is not preferable to apply the grease 10 to improve the slip. This is because the grease loses the adhesive force at the portion to be bonded. Therefore, the grease 10 is not applied to the O-ring 9.

Next, the assembly work and the structural action at this time will be described. First, the O-ring 9 is inserted into the groove 5 of the flange 2. Next, grease 10 is applied to the groove 4 and the O-ring 8 of the flange 2, and the O-ring 8 is inserted into the groove 4. Finally, the adhesive 3 is applied to the adhesive surface 7 of the flange 2, the flange 2 is fitted into the case 1 and the adhesive 3 is cured, and the case 1 and the flange 2 are fixed. Since the grooves 4 and 5 are stepped as described above during fitting, the grease 10 applied to the grooves 4 and the O-ring 6 does not come into contact with the inner wall surface of the case 1. Therefore, by providing the step, it is possible to prevent the grease 10 from adhering to the inner wall surface and lowering the adhesive force during the assembly work. Further, in the above-mentioned assembly work, the grease 10 is not applied to the O-ring 9, but the reason is that if the grease 10 is applied to the O-ring 9, it becomes meaningless to provide a step, and the adhesive strength is reduced. This is because there is a risk of

On the other hand, during the assembling work, when the adhesive 3 is excessively applied to the adhesive surface 7, the excessive adhesive 3 flows into the case 1. However, the adhesive 3 escapes into the groove 5 and is prevented from further entering by the O-ring 9 and the partition 6. Therefore, the groove 4
The adhesive 3 does not flow into the space, and the O-ring 8 is not fixed by the adhesive 3 and loses its original function. If the O-ring 9 is not provided, the partition 6 blocks the entry, but since the O-ring 9 is an elastic body, the entry can be further prevented.

According to the first embodiment, the case 1
Since the flange 2 and the flange 2 are firmly fixed by the adhesive 3 and the O-ring 8 is made watertight, the O-ring 8 ensures the watertightness even if the adhesive 3 is partially peeled due to deterioration over time. Since it is not fixed by using bolts or the like, it is possible to obtain an effect that the closed container can be downsized. In the above embodiment, the structure in which the steps are formed in the grooves 4 and 5 has been described, but a structure without steps may be used. Further, although the case where the O-ring 7 is inserted in the groove 5 has been described, since it is sufficient if there is a groove through which the adhesive 3 can escape, a structure in which the flow is stopped by the partition 6 without inserting the O-ring 7 in the groove 5 May be The adhesive escape groove 5 may be formed on the inner wall surface side of the case 1 instead of being formed on the flange 2.

Second Embodiment FIG. 3 is a sectional view of the entire structure. Differences from the first embodiment will be described below in comparison with FIG. FIG.
In FIG. 2, a lid 11 corresponds to the flange 2 which is the lid of FIG. 2, and a closed container 12 corresponds to the case 1 which is the closed container of FIG. That is, the details of the main parts are the same as in the case of the first embodiment described with reference to FIG. 1, but the O-rings 8 and 9 are arranged on the closed container 12 side, and the lid 11
The adhesive 3 is applied to the peripheral edge of the structure to fix it.

According to the second embodiment, the first
The same effect as that of the embodiment can be obtained.

[0017]

As described above, according to the watertight structure of the airtight container of the present invention, the airtight container and the lid are firmly fixed by the adhesive, and the O-ring makes the watertight. O even if some peeling occurs due to deterioration over time
The ring has the effect of ensuring water tightness. Since it is not fixed by using bolts or the like, it is possible to obtain an effect that the closed container can be downsized. In particular, even if excess adhesive is applied during assembly work, excess adhesive will flow toward the inside of the closed container, but the adhesive will escape into the adhesive escape groove and move further inside. The effect of being able to stop the entry of is obtained. Therefore, the adhesive does not adhere to the O-ring arranged inside the adhesive escape groove and lose its original function. As a result, according to the watertight structure of the closed container of the present invention, it is possible to obtain the effect of achieving high watertightness and miniaturization.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of an embodiment.

FIG. 2 is an overall structural diagram of the first embodiment.

FIG. 3 is a sectional view of the entire structure of the second embodiment.

FIG. 4 is a sectional view of a conventional main part.

FIG. 5 is a cross-sectional view of a conventional main part

FIG. 6 is a sectional view of a conventional main part.

[Explanation of symbols]

 1 Case 2 Flange 3 Adhesive 4,5 Groove 6 Partition 7 Adhesive surface 8,9 O-ring 10 Grease

Claims (5)

[Claims] 1. A watertight structure of an airtight container, wherein an O-ring provides watertightness between an opening of a hollow airtight container and a lid fitted in the opening, and an O-ring groove is formed on an outer periphery of the lid. Then, an adhesive escape groove is formed by separating the partition from the O-ring groove, an adhesive surface is formed by connecting to the adhesive escape groove, and an adhesive is applied to the adhesive surface to form an opening of the closed container. A watertight structure for a hermetically sealed container, characterized in that a lid and a lid are fixed to each other, and excess adhesive flows into the adhesive escape groove when the lid is fixed. 2. The watertight structure for a hermetically sealed container according to claim 1, wherein an O-ring for preventing the flow of the adhesive is arranged in the adhesive escape groove. 3. The hermetic seal according to claim 2, wherein the O-ring groove and the adhesive escape groove are formed with a step, and the inner wall surface of the opening is also provided with a step following the step. Watertight structure of the container. 4. A watertight structure of a hermetically sealed container, wherein an O-ring provides watertightness between an opening of the hollow hermetically sealed container and a lid fitted to the opening, and an O ring is provided on an inner wall of the opening of the hermetically sealed container. A groove for use is formed, an adhesive escape groove is formed by separating the partition from the groove for O-ring, and an adhesive surface is formed by connecting to the adhesive escape groove, and an adhesive is applied to the adhesive surface for sealing. A watertight structure for a hermetically sealed container, characterized in that the opening and the lid of the container are fixed to each other, and excess adhesive flows into the adhesive escape groove when the fixing is performed. 5. A watertight structure of a hermetic container, wherein an O-ring provides watertightness between an opening of a hollow airtight container and a lid fitted in the opening, and a groove for an O-ring is formed on the outer periphery of the lid. Then, when the lid is fitted into the closed container, an adhesive escape groove is formed on the inner wall of the opening of the closed container so as to be located outside the O-ring groove, and the adhesive escape groove is connected to the adhesive escape groove. To form an adhesive surface, apply an adhesive to the adhesive surface to fix the opening of the closed container and the lid, and allow excess adhesive to flow into the adhesive escape groove during the attachment. The watertight structure of the airtight container.