JPH10302885A - Sealed fitting auxiliary tool and water-tight structure of underwater apparatus connection portion provided therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate air inside a cylinder body so as to make a low pressure state, prevent peeling of each bonded part, and prevent the generation of a moisture stay space by providing a cylinder body forming an air-tight space with an air evacuation hole for pumping air in the air-tight space. SOLUTION: To an air evacuation hole 62 of a sealed fitting auxiliary tool 6, air sucking means such as suction pump is connected, and air in an air-tight space 61 is evacuated to the outside in the air-tight space 61 by driving the suction pump. Thereby, at the same time when air is evacuated an air-tight space 61, air is evacuated from the interval space of the shell insert part 4, and a vacuum state or a low-pressure state similar thereto is made. At this time, a cylindrical shell 3 is fixed so as not to move from an end 61a of an air-tight container 61 owing to lowering of the internal pressure. The cylindrical shell 3 is moved inside thereof along the air-tight container 61, and is inserted into a shell insert part 4, and a connector 22 of the cylindrical shell 3 is connected to another connector 41 in the shell insert part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing aid and, more particularly, to a sealing aid suitable for removing air remaining in an enclosed space when an insertion member is inserted into a concave hole. About.

[0002] The present invention also relates to a watertight structure of an underwater equipment connection part, and more particularly to a watertight structure of an underwater equipment for connecting an underwater equipment main body and a cable.

[0003]

2. Description of the Related Art Conventionally, a watertight structure of this type of underwater equipment connecting portion is shown in FIG. 4, for example, as shown in FIG.
1, a shell insertion portion 52 provided in a concave shape at one end of the housing 51, a connector 53 provided inside the shell insertion portion 52, and an outer peripheral surface of the shell insertion portion 52 of the housing 51. Connecting screw portion 54, and O-ring groove 5 around
5a is formed and the shell 55 is inserted into the shell insertion portion 52 having the flange portion 55b that is in contact with the upper end surface of the shell insertion portion 52, and the inner surface of the shell insertion portion 52 that is attached to the O-ring groove 55a of the shell 55. An O-ring 56 that comes into contact with, a cable 57 that inserts the tip into the shell 55 to connect the core wire to the terminal of the connector 53, a filling resin 60 that fills the periphery of the core wire of the cable 57, and an end surface of the shell 55. Mold part 5 covering a predetermined portion of cable 57 while being adhesively connected to the upper surface of flange 55b with an adhesive.
8 and the screw portion and the shell 55 that mesh with the connecting screw portion 54.
And a cap nut 59 that is screwed into the coupling screw portion 54 to press and fix the shell 55 to the shell insertion portion 52 side.

[0004] With the above structure, the cable 57 is connected to the housing 51.
Side, and the underwater equipment connection is submerged.

[0005]

However, in the above conventional example, when the shell 55 is inserted into the shell insertion portion 52,
O-ring 56 for watertightness provided on the shell 55
Due to this, high airtightness is exhibited between the side wall of the shell insertion portion 52 and the internal pressure due to the air remaining inside the shell insertion portion 52, and the adhesive portion between the core wire of the cable 57 and the filling resin 60 and the end face of the connector 53 There is a disadvantage that the adhesive portion between the resin and the filling resin 60 is peeled off, a space where moisture stays is generated, and the effect of insulating the cable 57 is reduced.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hermetically-sealed mounting aid capable of removing air inside a concave hole when an insertion member is inserted, an adhesive portion between a cable core and a filling resin, and a connector end face and a filling resin. An object of the present invention is to provide a watertight structure of a connection part of an underwater device, which can prevent peeling of an adhesive portion of the device and prevent generation of a space where moisture stays.

[0007]

According to a first aspect of the present invention, there is provided a hermetically sealed mounting aid used for mounting an insertion member which is inserted into a recessed hole and seals the inside of the recessed hole, the one end of the hermetically sealed mounting aid. It is said that an insertion member is inserted from the other end and the other end is connected to the concave hole, and a cylindrical body that forms an airtight space inside is provided, and that this cylindrical body is provided with an air vent hole for sucking air in the airtight space. The composition is adopted.

[0008] In this configuration, with the insertion member inserted into one end of the tubular body of the hermetically-mounted auxiliary device, and with the other end of the tubular body facing the recessed hole, the concave hole is formed. Connect to On the other hand, an air suction means such as a suction pump is connected to the air vent hole, and the air inside the cylindrical body is discharged to the outside by driving the suction pump. As a result, air is exhausted from the internal space of the concave hole simultaneously with the cylindrical body. At this time, the insertion member is fixed so as not to move from one end of the cylindrical body due to a decrease in internal pressure. After the inside of the tubular body is in a vacuum or similar state, the insertion member is moved along the inside of the tubular body and inserted into the concave hole.

Here, in addition to the above structure, as shown in the invention of claim 2, a sealing material for sealing between the other end of the tubular body and the concave hole is provided. good.

According to the third aspect of the present invention, the electric wire cable, the connector connected to the core wire of the electric wire cable, and the filling material filling the space around the connecting portion between the core wire and the connector are arranged therein. A cylindrical shell, a concave hole provided therein with another connector into which the shell is inserted and connected to the connector, sealing means for sealing between the cylindrical shell and the concave hole, Fixing means for holding the state in which the shell is inserted into the concave hole.

Further, a cylindrical shell is inserted from one end and the other end is connected to a concave hole, and a cylindrical body for forming an airtight space is provided inside the cylindrical shell. The airtight space is provided with an air vent hole for sucking air, which is provided with a hermetically sealed attachment aid.

In such a configuration, the cylindrical body is connected to the concave hole with the cylindrical shell inserted into one end of the cylindrical body and the other end of the cylindrical body facing the concave hole. . on the other hand,
Air suction means such as a suction pump is connected to the air vent hole, and the air inside the cylindrical body is discharged to the outside by driving the suction pump. As a result, air is exhausted from the internal space of the concave hole simultaneously with the cylindrical body. At this time, the cylindrical shell is fixed so as not to move from one end of the cylindrical body due to a decrease in internal pressure. After the inside of the cylindrical body is in a vacuum or similar state, the cylindrical shell is moved along the inside of the cylindrical body and inserted into the concave hole, and the connector of the cylindrical shell and the inside of the concave hole are inserted. Connect with other connectors. After the connection of the connector is completed, the hermetically-sealed mounting aid may be removed.

[0013] In addition to the above-described third aspect of the present invention,
Inserting a sealing material for sealing between the cylindrical shell and the cylindrical body, or inserting a sealing material for sealing between the other end of the cylindrical body and the concave hole. A configuration may be adopted.

Further, in addition to the above-described structure of the watertight structure of the underwater equipment connecting portion, the fixing means is structured so as to be screwably engaged with one end of the cylindrical member. It is also possible to provide a configuration in which a pressing projection for pressing the shell in the shape of the concave hole is provided.

[0015]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing a state before insertion according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a state after insertion.

In this embodiment, as shown in FIG. 1, an electric wire cable 21, a connector 22 connected to a core wire 21a of the electric wire cable 21, and the core wire 21a and the connector 22
A cylindrical shell 3 as an insertion member, in which a filling resin 31 as a filling material that fills the space around the connection portion with is inserted, and the shell 3 is inserted into the connector 22.
A shell insertion part 4 as a concave hole equipped with another connector 41 to be connected with the O-ring 5 as a sealing means for sealing between the cylindrical shell 3 and the shell insertion part 4; Cap nut as fixing means 7 for holding the tubular shell 3 inserted in the shell insertion portion 4 (Fig. 2).
And the watertight structure 10 of the underwater equipment connection part comprising:

Furthermore, the watertight structure 1 of this underwater equipment connection portion
In FIG. 2, a cylindrical shell 3 is inserted from one end 61a and the other end 61b is connected to the periphery of the shell insertion portion 4 to form an airtight space 61c therein. A container 61 is provided.
The air vent hole 62 that sucks out the air in the airtight space 61c
Is provided.

Hereinafter, each part will be described in detail.

First, the tubular shell 3 includes a tubular portion 32 and a large-diameter flange portion 3 provided at one end of the tubular portion 32.
And 3. The cylindrical portion 32 is a cylindrical structure that can be inserted into the shell insertion portion 4 and has an outer diameter substantially equal to the inner diameter of the shell insertion portion 4. The cable 21 is inserted, and its core wire 21a is connected to the connector 22 slightly exposed from the other end. Filled resin 31 is sealed in the extra space inside cylindrical portion 32. Further, two ring grooves 31a equipped with the above-mentioned O-ring 5 are formed on the outer peripheral surface thereof. The O-ring 5 keeps the hermetic seal between the cylindrical shell 3 and the shell insertion portion 4, and forms a watertight state between the electric cable 21, the connector 22 and the other connector 41.

On the other hand, the flange portion 33 is formed in a disk shape which is widened in the radial direction from the outer peripheral surface of the upper end portion of the cylindrical portion 32 to the entire circumference. The size is set substantially equal to the inner diameter of the container 61 and can be inserted into the airtight container 61. An O-ring groove 33a is formed at the peripheral end of the flange portion 33, and an O-ring 34 as a sealing material is provided.
The O-ring 34 maintains the airtight state of one end 61a of the airtight container 61 when the airtight container 61 has the cylindrical shell 3 inserted therein.

On the flange portion 33 side of the cylindrical shell 3,
The molding material 11 covering the end of the electric cable 21 has one end face thereof at one end face (upper end face) of the flange portion 33.
It is equipped with a bonded state.

Next, the shell insertion portion 4 will be described.
The shell insertion part 4 is provided with an underwater device 16 to be submerged.
It is formed on the end face of one end of the housing 15. A cylindrical convex portion 12 centered on the shell insertion portion 4 is formed at one end of the housing 15, and when the cylindrical shell 3 is inserted into the shell insertion portion 4, the convex shape The upper end surface of the portion 12 and the lower end surface of the flange portion 33 described above abut. Further, the convex portion 12 has the same outer diameter as that of the flange portion 33 of the cylindrical shell 3.

The shell insertion portion 4 is a bottomed circular hole that opens upward, and is provided with another connector 41 with a further drop at the bottom. Other connectors 41
Is an underwater device 16 disposed inside the above-described housing 15.
The other connector 41 and the shell insertion portion 4 are hermetically sealed with an adhesive or the like.

The above-described cylindrical shell 3 is inserted into the shell insertion portion 4.
The airtight container 61 of the hermetically-mounted auxiliary device 6 for guiding the airtight container is formed in a cylindrical shape, and is mounted to the convex portion 12 of the housing 15 at the other end (lower end) 61b. That is, the airtight container 61
A female screw is formed on the inner peripheral surface of the other end portion 61b of the other end, and a male screw is formed on the outer peripheral surface of the convex portion 12, so that the airtight container 61 is placed around the shell insertion portion 4. The connection means 13 for connection is constituted. In addition, a ring groove 61 d provided with the O-ring 14 is formed on the inner peripheral surface of the airtight container 61 corresponding to a region other than the male screw on the outer peripheral surface of the convex portion 12. This O-ring 1
By virtue of 4, the airtight state on the other end 61b side of the airtight container 61 is maintained. That is, an airtight state in the airtight space 61c in the airtight container 61 is formed in combination with the O-ring 34 described above.

Further, the airtight container 61 of the hermetically-mounted auxiliary device 6
In the vicinity of the other end, an air vent hole 62 communicating with the outside from the airtight space 61c is formed. The air vent hole 62 is used when the airtight container 6 is connected to the circular convex portion 12.
1 is provided at a position other than a region corresponding to the outer peripheral surface of the protruding portion 12 on the inner peripheral surface. In addition, since the air vent hole 62 is connected to a suction pump or the like because it needs to suck out the air in the airtight space 61c, the air vent hole 62 has a tubular structure projecting outward from the outer peripheral surface of the airtight container 61.

Finally, the fixing means 7 will be described with reference to FIG. The fixing means 7 is formed in a cap nut shape by turning a cylindrical member having a U-shaped cross section and having a bottom upside down and providing a through hole for inserting the electric cable 21 and the molding material 11 on the bottom surface. That is, the fixing means 7 is formed at a cylindrical portion 71 having an inner diameter substantially equal to the outer diameter of the above-described convex portion 12 and in which the convex portion 12 is set to be freely inserted, and at one end of the cylindrical portion 71. Holding portion 7 having a through hole 72 for inserting the molding material 11 in the center of the bottom surface
3 and an engaging portion 74 composed of a female screw that is screwed into a male screw formed on the outer peripheral surface of the convex portion 12.

This fixing means 7 is provided after the cylindrical shell 3 is inserted into the shell insertion portion 4 by the hermetically-sealed mounting aid 6.
The sealing attachment aid 6 is removed from the convex portion 12 and is attached to the convex portion 12 instead. That is, the fixing means 7 is mounted by screwing the engaging portion 74 into the male screw provided on the outer peripheral surface of the convex portion 12, and the pressing portion 73 of the cylindrical shell 3 is mounted by such mounting. The flange portion 33 is pressed and fixed. As a result, the cylindrical shell 3 is fixed to the shell insertion portion 4 and is prevented from being pulled out. Instead of the fixing means 7, a through hole is formed in the flange portion 33 of the cylindrical shell 3, and a screw hole is formed in the upper surface of the convex portion 12, and the flange portion 33 is screwed or bolted. Is also good.

The operation of this embodiment will be described below.

First, as shown in FIG. 1, the cylindrical shell 3 is inserted into one end 61a of the airtight container 61 of the hermetically-mounted auxiliary device 6, and the other end 61b is connected to the convex portion 1 of the housing 15.
2 is attached. The cylindrical shell 3 holds its position near one end of the airtight container 61. As a result, each O
The airtight space 6 in the airtight container 61 by the rings 14 and 34
The inside of 1c is sealed.

Then, the air vent hole 6 of the sealing attachment aid 6
2 is connected to an air suction means such as a suction pump, and the air in the airtight space 61c is discharged to the outside by driving the suction pump. As a result, the air is exhausted from the inner space of the shell insertion portion 4 simultaneously with the airtight space 61c, and a vacuum state or a low-pressure state equivalent thereto is attained. At this time, the cylindrical shell 3 is fixed so as not to move from one end 61a of the airtight container 61 due to a decrease in internal pressure.

From the above-described state, the tubular shell 3 is moved along the airtight container 61 and inserted into the shell insertion portion 4, and the connector 22 in the tubular shell 3 and the shell insertion portion 4 are inserted. To the other connector 41 inside.

Next, after the connection of the connectors 22 and 41 is completed, the sealing attachment aid 6 is removed from the convex portion 12 and moved along the electric cable 21 so that the electric cable 21
Remove from the other end. Then, the convex portion 12 of the housing 15
, A cap nut 5 is attached as shown in FIG. By the fastening of the fixing means 7, the flange portion 33 of the cylindrical shell 3 is pressed toward the convex portion 12 and pressed, and the cylindrical shell 3 is effectively fixed to the shell insertion portion 4.

The connecting portions of the connectors 22 and 41 are effectively water-tight by the O-rings 5, and the underwater device 16 is submerged in the state where the electric cable 21 is connected.

As described above, in the present embodiment, since the air between the cylindrical shell 3 and the shell insertion portion 44 is removed by the closed mounting aid 6 and the mounting is performed in a vacuum state or a low pressure state. In addition, the O-ring 5 of the cylindrical portion 32 of the cylindrical shell 3 prevents or suppresses an increase in air pressure in a closed space formed inside the shell insertion portion 4. For this reason,
Filled resin 31 and electric cable 2 due to intrusion of high pressure air
It is possible to prevent the core wire 21a or the connector 22 from peeling off. This eliminates the stagnation of moisture due to the peeling space, prevents a decrease in the insulating effect of the core wire 21a, effectively prevents corrosion of the core wire 21a, the connector 22, and the like, and extends the life of the underwater equipment connection portion. It becomes possible.

FIG. 3 shows another example of the fixing means.
The fixing means 7A is configured such that the cylindrical shell 3 is
Then, the hermetically sealed mounting aid 6 is mounted on the hermetically sealed mounting aid 6 in a state where the hermetically sealed mounting aid 6 is still mounted on the convex portion 12.

That is, similarly to the fixing means 7, the fixing means 7A is formed by turning a cylindrical member having a U-shaped cross section with a bottom upside down and inserting a wire cable 21 and a molding material 11 into the bottom surface thereof. To form a cap nut. Then, a cylindrical portion 71A having an inner diameter substantially equal to the outer diameter of the hermetic container 61 of the hermetically-sealed attachment auxiliary tool 6 is set so as to be freely inserted, and a bottom portion formed at one end of the cylindrical portion 71A. 73A, a through hole 72A drilled through the center of the mold material 11, an engaging portion 74A engageable with the upper end of the airtight container 61, and the same direction as the cylindrical portion 71A from the bottom portion 73A. And a cylindrical pressing protrusion 75A which is inserted upright into the airtight container.

Here, the airtight container 61 of the hermetically sealed mounting aid 6 is shown.
A male screw is formed on the outer peripheral surface of the upper end of the fixing member 7A, and can be freely screwed with a female screw formed as the engaging portion 74A of the fixing means 7A. Then, these are screwed and fixed to each other by the fixing means 7A.
Is pressed, the pressing projection 75A of the fixing means 7A described above is set to have a length such that the distal end thereof comes into pressure contact with the upper surface of the flange portion 33 of the cylindrical shell 3.
For this reason, the fixing means 7A has a structure in which the fixing means 7A is mounted on the airtight container 61 and, at the same time, the cylindrical shell 3 is pressed and fixed to the shell insertion portion 4 side.

As described above, the fixing means 7A can be mounted without removing the hermetically sealed mounting aid 6.

[0039]

According to the first aspect of the present invention, when the insertion member is inserted, the air inside the cylindrical body and the internal space inside the concave hole can be removed in advance by the air vent hole when the insertion member is inserted. The inside of the concave hole can be set to a vacuum or a low pressure state equivalent thereto, and the insertion member can be inserted while maintaining such a state.

For this reason, when inserting the insertion member, it is possible to effectively prevent an increase in pressure inside the concave hole.
Also, for example, when the concave hole is a storage container for storing an anaerobic substance therein, and the insertion member is a lid of such a container, the inside of the storage container is removed before the lid is attached. It is possible to do.

The invention according to claim 2 has the same effect as that of the invention according to claim 1, and it becomes possible to improve the airtightness between the cylindrical body and the concave hole by the sealing material. In addition, when air is sucked out from the air vent hole, the intrusion of extra external air can be prevented, and it becomes easier to make the inside of the concave hole a vacuum state.

In the watertight structure of the underwater equipment connecting portion according to the third aspect of the present invention, the air between the cylindrical shell and the concave hole is removed by the hermetically mounted auxiliary device, and the device is mounted in a vacuum state or a low pressure state. Therefore, an increase in the air pressure in the airtight space and the concave hole is prevented or suppressed. For this reason, it is possible to prevent separation between the filling resin and the core wire of the electric cable or the connector due to intrusion of high-pressure air. As a result, stagnation of moisture due to the peeling space is eliminated, the insulation effect of the core wire is effectively prevented from decreasing, and the core wire, connector, etc. are effectively prevented from corroding and the life of the underwater equipment connection part is extended. Is possible.

According to the fourth or fifth aspect of the present invention, the third aspect is provided.
In addition to having the same effect as the described invention, the sealing material can improve the hermeticity between the cylindrical shell and the cylindrical body or between the cylindrical body and the concave hole. When the air is sucked out from the hole, the intrusion of extra external air can be prevented, and it becomes easier to make the inside of the concave hole a vacuum state.

According to the sixth aspect of the present invention, since the fixing means can be freely attached to the sealing aid and the cylindrical shell is pressed toward the concave hole with the attachment, the fixing of the cylindrical shell can be quickly performed. In addition, the operation can be easily performed, and the workability can be improved.

As described above, according to the present invention, it is possible to provide an unprecedented excellent sealing aid and a watertight structure of a connection portion of an underwater device.

[Brief description of the drawings]

FIG. 1 shows one embodiment of the present invention and is a cross-sectional view in a state before a cylindrical shell is inserted.

FIG. 2 shows one embodiment of the present invention, and is a cross-sectional view in a state after insertion of a cylindrical shell.

FIG. 3 is a cross-sectional view showing another example of the fixing means.

FIG. 4 is a sectional view showing a conventional example.

[Explanation of symbols]

 Reference Signs List 3 cylindrical shell (insertion member) 4 shell insertion part (concave hole) 5 O-ring (sealing means) 6 hermetic mounting auxiliary tool 7, 7A fixing means 10 water-tight structure of underwater equipment connection part 14 O-ring (sealant) 15 Housing 16 Underwater equipment 21 Electric cable 21a Core wire 22 Connector 31 Filled resin (Filling material) 34 O-ring (Sealing material) 41 Other connector 61 Tubular body 61a One end 61b The other end 61c Airtight space 62 Air vent hole 75A Pressing protrusion

Claims (6)

[Claims] 1. A sealing aid which is inserted into a concave hole and used to mount an insertion member for sealing the inside of the concave hole, wherein the insertion member is inserted from one end and the other end is inserted. Is provided with an air vent hole for sucking air in the airtight space. Utensils. 2. The sealing aid according to claim 1, further comprising a sealing member provided at the other end of the cylindrical body to seal the hollow body with the concave hole. 3. A cylindrical shell having therein an electric wire cable, a connector connected to a core wire of the electric wire cable, and a filler filling a space around a connection portion between the core wire and the connector, A recessed hole in which another connector connected to the connector by inserting this shell is provided, sealing means for sealing between the cylindrical shell and the recessed hole, and the cylindrical shell is In a watertight structure of an underwater equipment connecting part, which comprises a fixing means for holding a state of being inserted into the recessed hole, the tubular shell is inserted from one end and the other end is connected to the recessed hole. Underwater, comprising: a tubular body forming an airtight space therein; and a sealing attachment aid having an air vent hole for sucking air from the airtight space in the tubular body. Equipment connection Watertight structure. 4. The watertight structure of an underwater device connecting portion according to claim 3, wherein a sealing material which seals between the tubular shell and the tubular body is inserted. 5. The watertight structure of an underwater equipment connection part according to claim 3, wherein a sealing material for sealing is inserted between the other end of the cylindrical body and the concave hole. 6. The fixing means has a structure in which one end portion of the tubular member is screwed to be freely engaged with the fixing means,
4. A pressing projection for pressing said cylindrical shell toward said concave hole by said engagement.
The watertight structure of the underwater equipment connecting part according to 4 or 5.