JP2914156B2 - Protection tube terminal cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective tube terminal cap which is attached to a terminal of a protective tube for protecting a water supply pipe or the like and which prevents foreign substances such as dust from entering the protective tube.

[0002]

2. Description of the Related Art FIG. 8 and FIG. 9 show such a protective tube terminal cap. That is, the protective tube terminal cap 12 is formed of, for example, polyethylene, and has a substantially cylindrical shape with only one end opened.The covering portion 13 that covers the terminal opening of the protective tube 10 and the outer periphery of the protective tube 10 are provided. A mounting portion 5 having a locking projection 6 for locking in the groove 10a and being connected to the covering portion 13; This thermowell terminal cap 12
Is a protective tube before the protected tube such as a water supply tube is inserted inside.
Is detachably attached to the end of the protective tube 10 to prevent foreign matter such as dust from entering the protective tube 10. The protective tube terminal cap 12 is removed when the protected tube is inserted through the protective tube 10.

After the tube to be protected is inserted through the protective tube 10, another protective tube terminal cap 14 as shown in FIGS. 10 and 11 is attached in place of the protective tube terminal cap 12. This is made of a soft vinyl chloride material, and is provided with an insertion hole 15 having an inner diameter substantially the same as the outer diameter of the protected tube 11. Thereby, the protected tube 11 can be led out from the end of the protective tube 10, and foreign matter such as dust can be prevented from entering the protective tube 10.

[0004]

However, the protective tube terminal caps 12 and 14 described above are not provided with the protective tube 10 of the protected tube 11.
Since the former must be replaced with the latter at the time of insertion work into the pipe, there has been a problem that the piping work is extremely troublesome. Furthermore, the former has a function of preventing foreign matter such as dust from entering the protection tube 10, and the locking portion is detachable but is not easily removed. Because it fits closely to 10a, it cannot be easily removed when replacing it with the latter, and the removal work requires considerable labor.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a protective tube end cap that improves the efficiency of piping work.

[0006]

According to a first aspect of the present invention, there is provided a protective tube terminal cap for covering a terminal opening of a protective tube and a peripheral wall of a tube end of the protective tube. A protective tube end cap having a locking portion for stopping and a mounting portion connected to the covering portion.
It has a diameter that approximately matches the outer diameter of the protected tube that passes through the protection tube
Provide a penetrating part and project the penetrating part with a protected pipe.
Sealed wall at least partially thinned to be broken
The structure is formed as follows .

[0007]

[0008]

[0009]

According to the first aspect of the present invention, the through portion is secured.
Keep the sealed state before inserting the protection tube, and when inserting the protected tube
Is pierced and opened, and the pierced
The rim closely contacts the peripheral wall of the protected tube.

[0010]

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. Members having the same basic functions as those of the conventional example are denoted by the same reference numerals as those of the conventional example.

FIG. 1 is a sectional view of a protective tube terminal cap, and FIG.
Is a perspective view thereof, FIG. 3 is a cross-sectional view showing a state in which a water supply pipe has penetrated a penetrating portion, and FIG. 4 is a perspective view thereof.

The protective tube end cap 1 is made of, for example, polyethylene, and is detachably attached to an end of a protective tube 10 made of a flexible corrugated tube. From entering the protection tube 10. Specifically, the protective tube end cap 1 is
And a mounting portion 5.

The covering portion 2 covers the terminal opening of the protective tube 10 and comprises a guiding portion 3 and a penetrating portion 4. The guiding portion 3 has a shape in which the tip of a cone having a hollow inside and an open bottom is cut in the horizontal direction, and a protected pipe to be inserted into the protective pipe 10, for example, a flexible water supply pipe 11 made of polybutene. Is guided to a through portion 4 described later. The guiding portion 3 has a size such that the inner diameter of the base end side opening and the inner diameter of the leading end side opening substantially match the outer diameter of the protective tube 10, respectively.
It is formed to have a size substantially matching the outer diameter of the eleventh.
In addition, the water supply pipe 11 and the like inserted into the protective tube 10 are generally cut at an oblique end so as to be hardly caught on the inner wall of the protective tube 10 having an uneven shape. That is, the water supply pipe 11 and the like have a sharpened end.

The penetrating portion 4 is provided so as to close the opening on the distal end side of the guiding portion 3. That is, this penetration
4 is provided in a range corresponding to the outer diameter of the water supply pipe 11.
Further, the penetrating portion 4 is formed thin so as to have a lower strength than the other portion of the covering portion 2, that is, the guiding portion 3.

The mounting portion 5 has a substantially cylindrical shape, and the guiding portion 3
Are connected continuously from the base end. That is, the mounting portion 5 has an inner diameter that substantially matches the outer diameter of the protection tube 10, and comes into contact with the protrusion on the outer peripheral wall of the tube end of the protection tube 10. The mounting portion 5 is a locking portion that locks to the outer peripheral wall of the protection tube 10.
It has a locking projection 6 for locking to a. Further, a plurality of anti-slip projections 7 are provided on the outer periphery of the mounting portion 5. The anti-slip projection 7 serves as an anti-slip when the end of the protection tube end cap 1 is gripped by hand or the like in order to remove it from the protection tube 10. The anti-slip projection 7 also has a function as a rib.

The operation of inserting the water supply pipe 11 into the protection pipe 10 is performed as follows. First, a protective tube terminal cap 1 is attached to the end of the protective tube 10 so as to cover the end.
Next, the water supply pipe 11 is inserted from one end of the protection pipe 10 to the other end. At this time, the water supply pipe 11 may be inserted by penetrating the penetrating portion 4 of the protective tube terminal cap 1 attached to one end of the protective tube 10, or may be inserted after removing the protective tube terminal cap 1. . Then, the end of the water supply pipe 11 that has proceeded to the other end of the protection tube 10 is guided by the guide portion 3 of the protection tube terminal cap 1 attached to the other end, and faces the through portion 4. In this state, when the water supply pipe 11 is further pushed forward, the pointed tip of the water supply pipe 11 breaks through the through portion 4 and protrudes outward from the protection pipe 10.

In such a protective tube terminal cap 1,
The covering portion 2 has a strength lower than that of the other portions, and can be easily broken through by applying a certain force.
Water supply pipe without replacing it with another
11 can be inserted through the protection tube 10. Also, penetration
4 is provided within the range corresponding to the outer diameter of the water supply pipe 11,
As long as the pressure is not forcibly applied, the covering portion 2 is not broken more than necessary, and the performance of preventing foreign matter such as dust from entering can be maintained. Furthermore, since the guide portion 3 for guiding the end of the water supply pipe 11 to the through portion 4 is provided, the end of the water supply pipe 11 is
The end of the water supply pipe 11 can be quickly penetrated through the penetrating portion 4 without stopping at a position other than 4.

The pipe to be protected inserted into the protective tube may be a water supply pipe made of, for example, cross-linked polyethylene. In short, any pipe that has a predetermined hardness and can be inserted through the protective tube may be used. Further, the penetrating portion is not limited to being formed to be entirely thin. For example, as shown in FIG. 5, a penetrating portion 8 in which a groove 8a is engraved radially is provided, and only the groove 8a is thin. Is also good.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. Members having the same basic functions as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment.
Description is omitted.

FIG. 6 is a perspective view of a protective tube terminal cap, and FIG.
Is a sectional view thereof. The protective tube end cap 1 is provided with a positioning portion 9 on its covering portion 2. Positioning part 9
Is protruded in a substantially cylindrical shape from the tip of the guiding portion 3. That is, the positioning portion 9 has an inner diameter substantially matching the outer diameter of the water supply pipe 11, and the end of the water supply pipe 11 is inserted. The penetrating portion 4 is provided so as not to cover the distal opening of the guiding portion 3 but to close the distal opening of the positioning portion 9.

The operation of inserting the water supply pipe 11 into the protection pipe 10 is performed as follows. That is, when the water supply pipe 11 is inserted from one end of the protection pipe 10 to the other end, the end of the water supply pipe 11 that has proceeded to the other end of the protection pipe 10 has the protection pipe terminal cap 1 attached to the other end. Of the positioning unit 9
And faces the through portion 4. In this state, the water supply pipe 11
Is pushed further, the distal end of the water supply pipe 11 breaks through the through portion 4 and protrudes outward from the protection pipe 10.

In such a protective tube terminal cap 1,
Since the positioning portion 9 into which the end of the water supply pipe 11 is inserted is provided, the end of the water supply pipe 11 is not displaced with respect to the through portion 4,
The end of the water supply pipe 11 can be reliably penetrated through the penetrating portion 4.

[0025]

The protective tube terminal cap according to claim 1 is
The penetration keeps hermetically sealed before inserting the protected tube,
When the protection tube is inserted, it is pierced and opened,
The broken edge comes into close contact with the peripheral wall of the protected pipe. Therefore,
There is no need to replace the cap when inserting the protected tube.
The efficiency of pipe work is improved, and before and after the protected pipe is inserted
To prevent foreign matter from entering the protection tube
Can be.

[0026]

[0027]

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a perspective view thereof.

FIG. 3 is a sectional view showing a state in which a water supply pipe has penetrated the penetrating portion.

FIG. 4 is a perspective view showing a state in which a water supply pipe has penetrated the penetrating portion.

FIG. 5 is a perspective view showing an example in which a through portion in which a groove is engraved radially is provided.

FIG. 6 is a perspective view showing a second embodiment of the present invention.

FIG. 7 is a sectional view of the same.

FIG. 8 is a perspective view showing a conventional example.

FIG. 9 is a sectional view of the same.

FIG. 10 is a perspective view showing another conventional example.

FIG. 11 is a sectional view thereof.

[Explanation of symbols]

 1 End cap for protective tube 2 Cover 3 Induction 4 Penetration 5 Mounting 6 Locking protrusion 10 Protection tube 11 Water supply pipe

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A 2-132523 (JP, U) JP-A 62-202018 (JP, U) JP-A 2-143596 (JP, U) JP-A 52- 48694 (JP, U) Japanese Utility Model 49-26991 (JP, U) Japanese Utility Model 1-34828 (JP, U) Japanese Utility Model 56-43745 (JP, U) Japanese Utility Model Utility Model 5-70135 (JP, U) Japanese Utility Model Publication No. Sho 41-3723 (JP, Y1) Special Table 6-500393 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G16L 57/00 G16L 55/00 H02G 9/06 B65D 59/06

Claims (1)

(57) [Claims] 1. A protection comprising: a coating portion for covering a terminal opening of a protection tube; and a mounting portion having a locking portion for locking to a tube end peripheral wall portion of the protection tube and connected to the coating portion. In the tube end cap, the coating portion is provided outside the protected tube inserted through the protective tube.
A penetration having a diameter substantially matching the diameter is provided,
At least one hole so that it can be pierced by the protected pipe.
A protective tube terminal cap characterized in that the portion is formed in a thin sealed wall shape .