JP3382931B2 - Joint member for information communication cable accommodation pipe and connection structure of information communication cable accommodation pipe using joint member for information communication cable accommodation pipe - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint member for an information communication cable accommodating pipe that enables connection of different types of information communication cable accommodating pipes, and connection of an information communication cable accommodating pipe using the joint member for an information communication cable accommodating pipe. It is about structure.

[0002]

2. Description of the Related Art In recent years, optical fiber cables have been buried in major trunk roads in various places as a technical means for transmitting a large amount of information at high speed. Conventionally, a plurality of information communication cables such as the optical fiber cables are housed in an information communication cable housing tube called an outer tube. As the information communication cable housing pipe, there are a pipe made of concrete and a pipe made of rigid vinyl chloride. A plurality of different types of information communication cable housing pipes are connected to each other by interposing a concrete handhole having a manhole (hole) through which a person can enter and leave.
However, in the conventional connection structure of the information communication cable housing pipe using the handhole, the handhole itself is large and heavy, so that the burying work is difficult and the construction cost and the material cost are high. It was

In particular, as shown in FIG. 4, below the road q where the information communication cable intersects the road,
Since embedding the above ribbed pipe may cause deformation and damage due to earth pressure, a high-strength concrete pipe 12 with a base is embedded, and ribs are provided at both ends of the pipe with a base 12 through the hand holes 120. The attached tube 11 was connected. Therefore, a large and heavy handhole 1 with a relatively short interval
Since a plurality of 20 are used, the above-mentioned construction cost and material cost have risen significantly. Further, since there is a manhole on the upper surface of the handhole 120, there is a problem that water invades through the gap of the lid 120a that closes the manhole, and water accumulates in the handhole 120.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and an object of the present invention is to improve workability by reducing the size and weight and to significantly reduce the work cost and the material cost. Can be mitigated and besides
An object of the present invention is to provide a joint member for an information communication cable accommodation pipe which is also excellent in watertightness, and a connection structure for an information communication cable accommodation pipe using the joint member for an information communication cable accommodation pipe.

[0005]

As a technical means of the present invention for solving the above problems, claim 1 discloses a hard vinyl chloride.
A joint member for telecommunications cable housing tube which is adapted and Neil made of the information communication cable housing tube and concrete <br/> telecommunications cable housing pipe to connect to the main body portion made of the concrete, the rigid chloride Information and communication cable made of vinyl
And one opening connection portion for connecting the ends of the housing tube,
Insert the end of the concrete information communication cable storage pipe
The other opening connection portion for connection is provided, and the main body portion communicates the two opening connection portions inside,
The peripheral wall excluding the two opening connection parts is formed in a hermetically sealed manner, and the one opening connection part is made of a synthetic resin ,
With insert molded to the body part to part, other
One half is projected from the main body, and the other half is
Inside the other half, the rigid vinyl chloride
Formed so that the telecom cable housing pipe can be fitted together.
And the other opening connection portion is connected to the main body portion.
It is characterized in that it is integrally formed with the main body portion when it is molded . Here, the above-mentioned opening connection portion is configured to be fitted to the outer peripheral surface of the end portion of the information communication cable housing pipe,
Alternatively, it is formed in such a manner that it fits on the inner peripheral surface of the end of the information communication cable housing pipe, in other words, it is formed in a so-called male shape or female shape. In addition, the expanded diameter portion is a synthetic
From the viewpoint of the moldability of the opening connection part made of resin, the opening connection part
It is preferably located at the end inside the body of the connection. Change
In addition, if an enlarged diameter portion is formed at the end opposite to the end,
It is possible to facilitate the insertion of the communication cable receiving tube.

According to a second aspect of the present invention , the opening connection portion made of synthetic resin has an enlarged diameter portion on the end side inside the main body portion.

Further, in claim 3 , the main body portion is a front surface.
It is characterized in that it is formed in a substantially square shape as viewed .

Further, in claim 4 , the main body is
The information communication cable made of concrete with the length in the penetration direction
It is characterized in that it is set shorter than the outer diameter of the housing tube .

Further, the connection structure of the information communication cable housing pipe of claim 5 is an information communication cable made of hard vinyl chloride.
Each of the housing pipe and the concrete information communication cable housing pipe is connected to the corresponding opening connection portion via an annular watertight member made of an elastic material.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a joint member for an information communication cable accommodation pipe according to the present invention and a connection structure of an information communication cable accommodation pipe using the joint member for an information communication cable accommodation pipe.

Connection structure A of this information communication cable housing pipe
Are two different types of information communication cable housing pipes 11, 12
Are connected by a joint member 20 for the information communication cable housing pipe, and annular watertight members 31, 32 are interposed between the respective information communication cable housing pipes 11, 12 and the joint member 20 for the information communication cable housing pipe. ing.

The connection structure A of the information communication cable accommodation pipe is buried in the soil while being laid on the gravel layer p, and the information communication cable accommodation pipes 11 and 12 and the joint member for the information communication cable accommodation pipe are provided. A plurality of information communication cables (not shown) are inserted into the inside of 20.

On the other hand, the information-communication cable housing pipe 11 is a pipe with ribs made of hard vinyl chloride having a number of reinforcing ribs on the outer periphery thereof, and a well-known one is used.
Further, the other information communication cable housing pipe 12 is a well-known concrete pipe with a base having a female connection portion 12a at one end and a male connection portion 12b (see FIG. 2) at the other end, Generally, it has a structure that is more resistant to the pressure from the outside than the ribbed pipe, and is buried in a place such as below the road where the earth pressure is strongly received.

Joint member 20 for accommodating pipe for information communication cable
Includes a concrete body portion 21 consists of two openings connecting portions 22 and 23 provided on both sides of the main body portion 21, and both the opening connecting portions 22 and 23 is communicated within the main body portion 21 There is.

The main body portion 21 has a substantially square shape when viewed from the front (as viewed from the left or right side in FIG. 1), and a substantially central portion thereof is penetrated so as to connect both opening connection portions 22 and 23, and The peripheral walls (upper and lower walls and left and right side walls) of the portion excluding the opening connection portions 22 and 23 are hermetically formed.

The opening connection portion 22 is made of vinyl chloride and has an inner surface that is formed according to the outer diameter of the rib of the information communication cable housing pipe 11 so that the information communication cable housing pipe 11 having a rib can be fitted therein. It is a member, and when the main body 21 is concrete-molded, one half of the main body 21 side is
It is insert-molded in the main body portion 21.

The opening connection portion 22 has, on both ends thereof, a diameter-increasing portion 22a, whose diameter gradually increases.
22b. One of the enlarged diameter portions 22a is formed at the end portion outside the main body portion 21 so that the information communication cable housing pipe 11 can be easily inserted, and the other enlarged diameter portion 22b is formed in the pulling direction. The main body 21 is formed so as to bite into the concrete of the main body 21 so that the main body 21 does not easily come off when a force is applied.

The opening connecting portion 23 is shaped so as to fit into the female connecting portion 12a of the information communication cable accommodating pipe 12 and has a shape following the inner surface shape of the female connecting portion 12a. It is formed so as to project, and is integrally formed with the main body 21 when the main body 21 is concrete-molded.

The annular watertight member 31 has a ring shape with a rectangular cross section or a circular cross section, is made of an elastic material such as rubber, and is sandwiched between the inner peripheral surface of the opening connection portion 22 and the outer peripheral surface of the information communication cable housing pipe 11. By being elastically deformed by being deformed, the water tightness inside and outside the joint member 20 for the information communication cable housing pipe is maintained.

The annular watertight member 32 is also constructed in the same manner as the annular watertight member 31, and is sandwiched between the inner peripheral surface of the female connecting portion 12a and the outer peripheral surface of the opening connecting portion 23 of the information communication cable housing pipe 12. By being elastically deformed by being deformed, the water tightness inside and outside the joint member 20 for the information communication cable housing pipe is maintained.

Thus, the connection structure A of the information communication cable accommodating tube having the above-mentioned configuration has no manhole or the like on the upper surface,
Since one opening connection portion 22 is made of a resin material, it is formed to be small and lightweight, and its weight is reduced to about 1/15 of that of a conventional handhole. Moreover, due to the elasticity of the annular watertight members 31 and 32, the watertightness of the connection portion is excellent, and there is no concern that water will enter from the surroundings.

Next, the connection structure B of the information communication cable housing pipe shown in FIG. 2 will be described. The connection structure B of the information communication cable housing pipe is the joint member 20 for the information communication cable housing pipe in the connection structure A of the information communication cable housing pipe.
The connection member 23 for the information communication cable housing pipe is replaced by replacing the opening connection portion 23 of FIG.
And the male connecting portion 12b of the information communication cable housing pipe 12 which is a pipe with a base is connected to the opening connecting portion 23 ', and the same reference numerals are attached to the portions having the same basic structure. The duplicate description will be omitted.

The opening connecting portion 23 'has an inner surface shape into which the male connecting portion 12b of the information communication cable housing pipe 12 is fitted, and the main body portion 2 is formed when the main body portion 21 is concrete-molded.
It is molded integrally with 1.

An annular watertight member 31 is sandwiched between the inner peripheral surface of the opening connecting portion 23 'and the outer peripheral surface of the male connecting portion 12b of the information communication cable housing pipe 12, and the elastic property of the annular watertight member 31 is sandwiched. Thus, the male connecting portion 12b and the opening connecting portion 23 'are watertightly connected.

Next, the connection structure C of the information communication cable housing pipe shown in FIG. 3 will be described. The connection structure C of the information communication cable housing pipe is a particularly preferable example using the joint member 20 for the information communication cable housing pipe and the annular watertight member 30, and the connection portion is the connection structure A of the information communication cable housing pipe. , B, and thus detailed description thereof will be omitted.

Connection structure C of the information communication cable housing pipe
Connects the information communication cable housing pipe 12, which is a pipe with a stand, to the road q
Is buried under a gravel layer (not shown), and an information communication cable storage pipe joint member 20 is provided at the female connection portion 12a side end of the information communication cable storage pipe 12 (pipe with a base). , The information communication cable accommodation pipe joint member 20 'is interposed at the end of the information communication cable accommodation pipe 12 on the male connection portion 12b side, and the information communication cable accommodation pipe joint member 20, 20' is provided with ribs. The information communication cable housing pipe 11 which is a pipe is connected. According to
By the connection structure C of the information communication cable housing pipe,
For example, at the intersection of the information and communication cable 12 and the road q
Deformation and damage of the information communication cable housing pipe 12 due to earth pressure
Can be prevented and the construction cost and material cost are significantly reduced.
It is the child reduced.

[0027]

Since the present invention is constructed as described above, it has the following effects. According to claims 1 to 4 , in addition to the structure in which the peripheral wall is sealed,
Since one of the opening connection portions is made of a lightweight synthetic resin, it is possible to significantly reduce the size and weight of a conventional concrete handhole having a manhole on the upper surface for a person to enter and leave. Moreover, since the peripheral wall is sealed, water does not enter from the manhole unlike the conventional handhole. Therefore, construction is easy, and construction costs and material costs can be significantly reduced . Furthermore, on which it may constitute one opening connecting portion corresponding to the tube with Li Bed in size and weight, corresponding to with stand pipe
The other opening connection portion can have a high-strength structure that is highly integrated with the main body portion. Therefore, even if a comparatively heavy concrete pipe with a base is connected, it is possible to prevent the opening connection portion from being damaged by vibration or the like.
Moreover, in claim 2, the opening connecting portion made of synthetic resin is
Since there is an enlarged diameter portion on the end side that is internally contained in the main body,
The mouth connection does not easily come off the main body,
The connection strength can be improved. Moreover, according to the connection structure of the information communication cable housing pipe of claim 5, since the information communication cable housing pipe and the opening connection portion are connected via the annular watertight member, the watertightness and the workability at the time of connection are achieved. Can be improved .

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a connection member for an information communication cable housing pipe according to the present invention and a connection structure for an information communication cable housing pipe using the information communication cable housing pipe joint member.

FIG. 2 is a cross-sectional view showing another example of a joint member for an information communication cable housing pipe and a connection structure of an information communication cable housing pipe using the information communication cable housing pipe joint member according to the present invention.

FIG. 3 is a cross-sectional view showing an example in which the connection structure of the information communication cable housing pipe according to the present invention is buried below a road.

FIG. 4 is a cross-sectional view showing an example in which a conventional connection structure for an information communication cable housing pipe is buried below a road.

[Explanation of symbols]

11: Information and communication cable housing pipe (ribbed pipe) 12: Information and communication cable housing pipe (tube with stand) 20: Joint member for information communication cable storage pipe 21: Main body 22, 23: Opening connection part 31, 32: annular watertight member A, B, C: Connection structure of information communication cable housing pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsufumi Kumano 3-4163, Higashitakasuhigashi, Asahikawa, Hokkaido Asahi Dunke Co., Ltd. (56) Reference JP-A-7-233889 (JP, A) JP-A 8-75060 (JP, A) JP-A-11-341658 (JP, A) JP-A-9-247833 (JP, A) JP-A-58-39888 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 1/06 F16L 33/00 F16L 33/28

Claims (5)

(57) [Claims] 1. An information communication cable made of hard vinyl chloride.
A housing tube and concrete information communication cable housing pipe
An information communication cable housing pipe joint member which is adapted to connect, to the main body portion made of the concrete, made the hard vinyl chloride
One for connecting the end of the information communication cable housing pipe
Open connection and the information communication cable made of concrete
Install the other opening connection for connecting the end of the storage tube.
In the main body part, the two opening connecting parts communicate with each other inside, and the peripheral wall excluding the two opening connecting parts is formed in a hermetically sealed manner, and the one opening connecting part is made of synthetic resin. , One half part is insert-molded into the main body part, and the other half part
From the main body, and from the one half of the
Inside the other half part, the information communication made of the rigid vinyl chloride is
Signal cable receiving pipe is formed so as to be fitted together, and the other opening connection portion is formed by concrete-forming the main body portion.
A joint member for an information communication cable housing pipe, which is molded integrally with the main body when being shaped . 2. The joint member for an information communication cable housing pipe according to claim 1, wherein the opening connection portion made of synthetic resin has a diameter-expanded portion on an end portion side inside the main body portion. 3. The main body is formed in a substantially square shape when viewed from the front.
The joint member for an information communication cable accommodating pipe according to claim 1 or 2, which is characterized by being provided. 4. The main body has an upper length in the penetrating direction.
From the outer diameter of the concrete information communication cable housing pipe
4. The length is also set to be short.
The joint member for an information communication cable housing pipe according to any one of claims 1. 5. An information communication cable made of hard vinyl chloride
5. Each of the housing pipe and the concrete information communication cable housing pipe is connected to the corresponding opening connection portion via an annular watertight member made of an elastic material. Or a connection structure of an information communication cable storage pipe using the joint member for an information communication cable storage pipe according to item 1.