JPS598066Y2 - Oil supply pipe connector repair adapter - Google Patents

Description

[Detailed description of the invention] The present invention relates to an adapter for repairing oil supply pipe connectors, and in particular,
This invention relates to an adapter used when repairing the oil supply pipe connector of the F cable.

Generally, an oil supply pipe connector of an OF cable is constructed as shown in FIG.

That is, a reinforcing steel sleeve 2 is inserted into the tip of a corrugated oil supply pipe 1 made of aluminum, and a compression union 4 is attached to the outer periphery of the sleeve through a packing 3.
Match the connector seat 7 provided at the end of the other pipe 6 to be connected to the through nipple 5 provided at one end, and insert the cap nut 9 whose one end is locked to the stepped portion 8 of the through nipple 5. The through nipple 5 and the connector seat 7 are connected by screwing into a male screw 10 provided on the outer periphery of the connector seat 7.

In the above-described oil supply pipe connector, due to long-term use, the spherical tip 1 of the through nipple 5 becomes
1 changes from a spherical surface to a flat surface due to pressure joining with the connector seat 7, which may result in oil leakage.

In this case, when the cap nut 9 is further tightened, the flat portion of the spherical tip 11 expands and oil leakage is more likely to occur.

For this reason, conventionally, when the oil supply pipe 1 becomes flat to a certain extent, it is possible to restore it to the same condition as shown in Fig. 1 by cutting the oil supply pipe 1 along line A-A in Fig. 1 and installing a new through nipple. Is going.

However, when repairing such an oil supply pipe connector, it is necessary to temporarily remove the oil in the oil supply pipe 1 because the end of the oil supply pipe 1 is cut, and in addition, it is necessary to temporarily remove oil from the oil supply pipe 1 after installing a new through nipple and before refueling. Since it is necessary to vacuum the inside of the pipe, repair work is complicated and takes a long time.

The present invention has been developed with the above-mentioned points in mind, and an object of the present invention is to provide an adapter that allows easy repair of a fuel pipe connector.

The oil supply pipe connector repair adapter of the present invention has a male screw 17 on the outer periphery of one end that is screwed into the female thread 16 of the cap nut 9 that is locked to the step 15 of the through nipple 5, and a connector on the inner periphery of the other end. Female thread 19 screwed into male thread 18 of seat 7
and an auxiliary pipe 14 whose one end is fitted into the tapered end of the connector seat 7 and whose other end is joined to a stepped portion 21 provided at the middle part of the inner circumference of the intermediate pipe 13. , the surface in contact with the through nipple 5, the intermediate pipe 1 of the auxiliary pipe 14
Packing 2 on the surface in contact with 3 and connector seat 7, respectively.
0,22. 23 is provided.

With this arrangement, when the spherical tip of the through nipple becomes flat due to its connection with the connector seat, it can be repaired without having to replace the old through nipple with a new one, and the above-mentioned oil supply pipe This makes it possible to omit operations such as cutting and vacuuming.

The details of the invention will be explained below with reference to the illustrated embodiments.

FIG. 3 shows an embodiment of the present invention, and parts common to those in FIG. 1 are given the same reference numerals.

In the figure, the adapter 12 according to the present invention consists of an intermediate tube 13 and an auxiliary tube 14, a through nipple 5 and a connector seat 7.
It is placed between the

The intermediate tube 13 has a male thread 17 on the outer periphery of one end, and a female thread 19 on the inner periphery of the other end, which is screwed into the male thread 10 provided on the outer periphery of the connector seat 7.

An outward taper is provided on the end surface of the intermediate tube 13 on the side having the male thread 17, and an annular packing 20 is attached to the surface in contact with the tip of the through nipple 5.

A female thread 16 of a cap nut 9, which is engaged with a stepped portion 15 of the through nipple 5, is screwed into the male thread 17 of the intermediate tube 13.

The inner hole at the end of the intermediate tube 13 on the side having the female thread 19 has a large diameter, and the auxiliary tube 14 is disposed within the inner hole.

The auxiliary tube 14 has a tapered surface at one end that matches the tapered end of the connector seat 7, and an annular packing 23 is attached to the tapered surface.

An annular packing 22 is attached to the other end surface of the auxiliary tube 14, and is connected to a stepped portion 21 provided at an intermediate portion of the inner circumference of the intermediate tube 13 via the packing 22.

The adapter 12 having the above structure is used in the following manner.

When the spherical tip of the through nipple 5 connected to the connector seat 7 becomes flat beyond a certain level in the state shown in FIG. Remove the through nipple 5 and connector seat 7.
Once separated.

Then, the above-mentioned adapter 12 is placed between them, and the auxiliary tube 14 is fitted into the tapered end of the connector seat 7, and the intermediate tube 13 is attached by screwing one end into the cap nut 9 and the other end into the connector seat 7, respectively.

The repair is now complete. When attaching the adapter 12, the oil is allowed to flow out from the opposing openings of the through nipple 5 and the connector seat 7 to prevent outside air from entering.

By attaching the adapter 12 as described above, the spherical tip of the through nipple 5 is sealed with the packing 20, thereby preventing oil leakage.

It should be noted that it is meaningless to use the adapter 12 before the spherical tip of the through nipple 5 becomes flat, and it is worthwhile to use it when repairing the through nipple 5.

This is because it is not cost effective to use an adapter from the beginning.

For the purpose of simply preventing oil leakage, there is a method of providing an O-ring in advance on the spherical tip of the through nipple.

The present invention is simple and can easily repair existing through-hole nipples that do not have an O-ring, and is extremely effective in reducing cavities.

As described above, the adapter according to the present invention is composed of the intermediate pipe 13 connected to the through nipple of the oil supply pipe connector and the auxiliary pipe 14 connected to the connector seat 7. Since it can be installed with the oil flowing out from the opening of the nipple and connector seat, there is no need to cut the oil supply pipe, compared to the conventional repair method described above.
It is possible to omit all the work such as attaching a compression union and vacuum treatment, resulting in an effect that the time can be shortened by about one-fifth.

In addition, according to the present invention, when installing between the through nipple to be repaired and the connector seat, the cutting device that was previously required,
Since tools such as a vacuum pump are not required and installation can be done only by hand, it is advantageous in terms of preparation work, transportation, etc.

[Brief explanation of drawings]

Figure 1 is a sectional view showing a conventional oil supply pipe connector, Figure 2 is a plan view showing a through nipple used in a fuel connector, and Figure 3 is a cross-sectional view showing a conventional oil supply pipe connector.
The figure is a cross-sectional view showing the oil supply pipe connector repair adapter according to the present invention. 1... Oil supply pipe, 5... Through nipple,
7... Connector seat, 9... Cap nut,
12...adapter, 13...middle tube,
14... Auxiliary pipe, 20, 22, 23...
... Patsuking.

Claims (1)

[Scope of utility model registration request] An intermediate portion having a male thread 17 on the outer periphery of one end that is screwed into the female thread 16 of the cap nut 9 that is locked to the stepped portion 15 of the through nipple 5, and a female thread 19 that is screwed into the male thread 18 of the connector seat 7 on the inner periphery of the other end. A tube 13 and one end is a connector seat 7
and an auxiliary tube 14 that is fitted into the tapered end of the intermediate tube 13 and joined to a stepped portion 21 provided at the middle part of the inner circumference of the intermediate tube 13 at the other end. Packings 29 and 22. are provided on the surfaces that contact the intermediate tube 13 and the connector seat 7, respectively. An adapter for repairing an oil supply pipe connector, characterized in that it is provided with a.