KR19980037557A - Automotive pipe connection structure - Google Patents

Abstract

The present invention relates to a connection structure of a pipe used in the interior of a vehicle, and improves the coupling structure of the automobile pipe to prevent leakage of pressurized oil in the interior, and also improves assembling to generate interference with other parts It is intended to reduce the assembly time, and to shorten the assembly time. To this end, the present invention, when using a hydraulic pressure, such as a power steering light brake, to provide an oil passage for the hydraulic transmission, the first and second In the pipe connection structure for an automobile including a pipe, a plurality of hooks are formed at equal intervals on the rear portion of the coupling end of the first pipe, and on the outer surface of the coupling end of the second pipe coupled to the first pipe. A stopper is formed at a position corresponding to the hook portion of the first pipe, so that when the first and second pipes are coupled, It characterized in that the stopper and the keubu to be coupled to each other.

Description

Automotive pipe connection structure

1 is a side view showing a conventional automobile pipe connection structure using a flare nut.

2 is an exploded perspective view showing a pipe connection structure according to the present invention.

3 is a cross-sectional view of FIG. 2.

4 is a cross-sectional view with the pipe connection shown in FIG. 2 assembled;

* Description of the symbols for the major symbols in the drawings *

1: 1st pipe 2: flare nut

3, 5: coupling end 4: second pipe

6: male thread portion 7: hook portion

8: Stopper 10: O-ring

[Field of Invention]

The present invention relates to a connection structure of a pipe used in the interior of a vehicle, and more specifically, a pressurized oil such as steering oil or brake oil flows inside the pipe, whereby a pressure is applied to the automobile pipe. It relates to the connection structure.

[Prior art]

In general, some of the devices inside an automobile use hydraulic pressure, such as power steering and brakes, which require oil passages for hydraulic transmission, which are mainly shown in FIG. Combined pipes are used.

1 is a side view showing a conventional automobile pipe connection structure using a flare nut (2), the flare nut (2) is inserted into one pipe (hereinafter referred to as the first pipe) And the coupling end 3 of the first pipe 1 is larger than the diameter of the pipe to form a funnel shape, so that the flare nut 2 is removed from the body of the first pipe 1. Do not fall. In addition, the coupling end 5 of the mating pipe 4 (hereinafter referred to as the second pipe) coupled to the first pipe 1 may be mounted in the coupling end 3 of the first pipe 1. A tapered shape is formed, and a male screw part 6 formed larger than the diameter of the second pipe 4 is formed just behind the coupling end 5 of the second pipe 4.

Therefore, in the joining of the first pipe 1 and the second pipe 4, after joining the engaging ends 3, 5 of each of the pipes 1, 4 to each other, the flare on the first pipe 1 By coupling the nut 2 to the male threaded portion 6 on the second pipe 4, the coupling between the first and second pipes 1, 4 is achieved.

[Technical problem to be achieved]

By the way, in the conventional coupling structure of automobile pipes, since the sealing property between the first and second pipes depends entirely on the contact surface of each coupling end, the pressurized oil is often leaked as described above. In addition, since the tool must be used to fasten the flare nut on the first pipe to the male thread of the second pipe, interference between the tool and other peripheral parts may occur, which may cause difficulty in assembly and increase assembly time. .

Accordingly, the present invention has been made to solve the above-described problems, to improve the coupling structure of the automotive pipe to prevent leakage of the pressurized oil inside, and also to improve the assembling to generate interference with other parts It is aimed at reducing the assembly time and reducing the assembly time.

[Configuration and Function of Invention]

In order to achieve this object, the present invention, in the case of using hydraulic pressure, such as power steering and brake, in the automotive pipe connection structure including the first and second pipes to provide an oil passage for the hydraulic transmission And a plurality of hook portions are formed at equal intervals on the rear portion of the coupling end portion of the first pipe, and a position corresponding to the hook portion of the first pipe on the outer surface of the coupling end portion of the second pipe coupled to the first pipe. The stopper is formed in the hook and the stopper when the first and the second pipe is characterized in that the coupling with each other.

In addition, the hook portion on the first pipe is formed with a hole for protruding the stopper of the second pipe to the outside, it is possible to press and release the stopper protruding outward when the first and the second pipe is released. .

Further, by forming the diameter of the coupling end of the second pipe larger than the diameter of the coupling end of the first pipe, the coupling end of the first pipe is inserted into the coupling end of the second pipe at the time of coupling the first and second pipes. It is desirable to.

In addition, since the O-ring formed of rubber is mounted on the outer circumferential surface of the first pipe coupling end portion, it is preferable to maintain the sealing property between the O-ring and the coupling end inner surface when the second pipe is inserted into the coupling end inner surface. Do.

In addition, when the first and second pipes are coupled, the coupling end of the first pipe is inserted into the coupling end of the second pipe, and the O-ring mounted on the outer surface of the coupling end of the first pipe is coupled to the second pipe. It is preferable that the stopper of the second pipe is coupled to the inner surface of the end and the stopper of the second pipe is engaged in the hook portion of the first pipe so that the coupling between the first and second pipes is achieved.

EXAMPLE

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In this embodiment, the same reference numerals are assigned to the same parts as those cited in the related art, and will be described again to avoid duplication of description. I never do that.

2 is an exploded perspective view showing a pipe connection structure according to the present invention, in accordance with the present invention, a plurality of hooks 7 are formed at equal intervals on the rear portion of the coupling end portion 3 of the first pipe 1. The stopper 8 is positioned at a position corresponding to the hook portion 7 of the first pipe 1 on the outer surface of the coupling end 5 of the second pipe 4 coupled to the first pipe 1. The hook portion 7 and the stopper 8 are coupled to each other when the first and second pipes 1 and 4 are coupled to each other. In addition, the hook portion 7 on the first pipe 1 is provided with a hole 9 for allowing the stopper 8 of the second pipe 4 to protrude outward, so that the first and second pipes 1 , 4) can be released by pressing the stopper (8) protruding outward.

In addition, according to the present invention, as shown in the cross-sectional view in FIG. 3, the diameter of the coupling end 5 of the second pipe 4 is made larger than that of the coupling end 3 of the first pipe 1. In this case, the coupling end 3 of the first pipe 1 is inserted into the coupling end 5 of the second pipe 4 when the first and second pipes 1 and 4 are engaged. The O-ring 10 formed of rubber is mounted on the outer circumferential surface of the first pipe 1 engaging end 3 so that the O-ring 10 at the time of insertion of the second pipe 4 into the inner surface of the engaging end 5. To maintain the sealing property with the inner surface of the coupling end 5.

Next, FIG. 4 is a cross-sectional view of the pipe connection shown in FIG. 2 in an assembled state, and as shown, when the first and second pipes 1 and 4 are coupled, the first pipe 1 is shown. The coupling end 3 of the second pipe 4 is inserted into the coupling end 5 of the second pipe 4, and the O-ring 10 mounted on the outer surface of the coupling end 3 of the first pipe 1 is connected to the second pipe. It is sealingly engaged with the inner surface of the engaging end 5 of (4), and the stopper 8 of the second pipe 4 is engaged in the hook portion 7 of the first pipe 1 so that the first And the coupling between the second pipe (1, 4) is made.

[Effects of the Invention]

As described above, according to the pipe connection structure for automobiles according to the present invention, a stopper is provided on the outer circumferential surface of the first pipe, and a stopper is provided on the outer surface of the second pipe at a position corresponding to the hook portion. And the coupling end diameter of the first pipe is smaller than the coupling end diameter of the second pipe such that the coupling end of the first pipe is inserted into the coupling end of the second pipe at the time of joining. The sealing property with the inner surface of the end is improved to prevent leakage of oil, and the pipe connection structure is improved in assembling performance by shortening the assembly time by not using a tool when assembling the hook method.

Although the present invention has been illustrated and described with reference to certain preferred embodiments, the present invention is not limited to the above-described embodiments, and the present invention belongs without departing from the spirit of the invention as claimed in the claims. Anyone with ordinary knowledge in the field will be able to make various changes.

Claims (5)

In the case of using hydraulic pressure, such as power steering and brake, in the automobile pipe connection structure including the first and second pipes to provide an oil passage for the hydraulic transmission, A plurality of hook portions are formed on the rear portion of the coupling end of the first pipe at equal intervals, and on the outer surface of the coupling end of the second pipe coupled to the first pipe at a position corresponding to the hook portion of the first pipe. A stopper is formed so that the hook portion and the stopper are coupled to each other when the first and second pipes are coupled to each other. According to claim 1, The hook portion on the first pipe is formed with a hole for allowing the stopper of the second pipe to project outward, by pressing the stopper protruding outward when the first and second pipes are released Automotive pipe connection structure, characterized in that to enable. 3. The joining end of the first pipe according to claim 1 or 2, wherein the second pipe forms the joining end diameter larger than the joining end diameter of the first pipe. A pipe connection structure for an automobile, characterized in that it is inserted into the coupling end of the pipe. The rubber ring is mounted on an outer circumferential surface of the first pipe coupling end to maintain the O-ring and the coupling end inner surface when the second pipe is inserted into the coupling end inner surface. Automotive pipe connection structure characterized in that. The coupling end of the first pipe is inserted into the coupling end of the second pipe and mounted on the outer surface of the coupling end of the first pipe. O-ring is sealingly coupled to the inner surface of the coupling end of the second pipe, the stopper of the second pipe is coupled to the hook portion of the first pipe is characterized in that the coupling between the first and second pipe is made. Connection structure for automobile pipes.