JPH018655Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention relates to a mounting structure for an oil cooler with a built-in radiator, and particularly to a mounting structure suitable for mounting an oil cooler made of a material other than aluminum in an aluminum tank.

(b) Background of the Technology Generally, it is known that an oil cooler 3 of a concentric double-tube structure is installed in the lower tank 2 of a radiator 1, as shown in Fig. 1, in order to cool the oil of a torque converter, etc. . In this type of oil cooler 3 with a built-in radiator, a pipe 4 forming an oil inlet/outlet portion is exposed from the tank wall to the outside and connected to an oil piping system. Therefore, the oil cooler 3 is supported by a connector that penetrates the side wall of the tank 2, but the oil cooler 3 and the tank 2 are connected in such a way that the support part does not come loose due to the influence of vibration, etc. It is desirable that the two parts be securely attached by integral brazing.

(c) Conventional technology and problems By the way, from the viewpoint of vehicle weight reduction, radiator 1
However, if the oil cooler 3 is made of a different metal other than aluminum, it has been impossible to integrally braze the oil cooler 3 to the aluminum tank. For this reason, the conventional oil cooler mounting structure was such that the oil cooler was only tightened with a nut, as shown in FIG. 2 (Japanese Utility Model Publication No. 57-6739). That is, tank 2
A boss part 5 was formed on the side wall of the oil cooler 3, a connector 6 of the oil cooler 3 was passed through the boss part 5, and an O-ring 7 interposed on the penetration surface was tightened with a seat plate 8 and a nut 9.

However, in the conventional mounting structure described above, the nut 9 is simply screwed onto the connector 6 passed through the tank 2 and tightened, so the nut 9 tends to loosen due to engine vibrations, running vibrations, etc. It was extremely unstable as a structure placed in such a vibration system.

(iv) Purpose of the invention The present invention focuses on the above-mentioned conventional problems, and provides an oil cooler with a built-in radiator that allows an oil cooler made of a different metal other than aluminum to be integrally attached to an aluminum tank by brazing. The purpose is to provide a mounting structure for.

(e) Structure of the invention In order to achieve the above object, the present invention has a mounting structure in which connectors provided at both ends of an oil cooler built in an aluminum tank are attached so as to protrude from the tank wall, and the connectors are attached to A nut made of clad material is screwed across the tank wall and fired and soldered to the aluminum tank.
A tightening nut is screwed onto the nut via a gasket and a washer.

(F) Embodiments of the invention Hereinafter, the mounting structure of the radiator built-in oil cooler according to the invention will be explained in detail with reference to FIGS. 3 and 4.

An oil cooler 11 built in an aluminum tank 10 and made of a different metal other than aluminum has a connector 12 at its end, and this connector 12 is inserted into a mounting hole 13 provided in the tank wall to protrude to the outside. There is. A pipe 14 is provided at the tip of this connector 12, and is connected to an oil piping system. The connector 12 has screws 12 on the outer periphery.
Carve A, screw the nut 15 from the protruding end side,
The tank wall is held between the connector and the receiving flange 12B at the proximal end of the connector. This nut 1
5 is made of clad material coated with brazing material in advance,
These assemblies are baked while being fastened to the connector 12, and the nut 15 and the aluminum tank 10 are brazed together (FIG. 4).
In this case, since the nut 15 and the tank 10 are made of the same metal, there is no problem in brazing.

Further, a cutout step 15A is formed on the outer inner edge of the nut 15, and an elastic gasket 16 for sealing water is mounted in the step 15A. After the gasket 16 is installed, a flat disk-shaped washer 17 is interposed, and these are tightened and fixed by a tightening nut 18 screwed onto the tip of the connector 12.

According to the mounting structure having such a configuration, when installing the oil cooler 11 made of a different metal other than aluminum to the aluminum tank 10, the connector 12 is passed through the mounting hole 13, and the nut 15 is screwed and tightened. By firing, the nut 15 made of clad material and the aluminum tank 10 are brazed together. Natsu 1
5, since the oil cooler 11 is screwed onto the connector 12, the oil cooler 11 is eventually soldered to the aluminum tank 10. Then, tighten the tightening nut 1 through the gasket 16 and washer 17.
8 to the connector 12, the tank 1
Liquid leakage from 0 can also be prevented.

According to this embodiment, the oil cooler 11 is soldered to the aluminum tank 10, so even if the oil cooler 11 is supported in a cantilevered structure within the aluminum tank 10, the connection between the two is more secure, and vibrations are not affected. Even if the nut 15 is screwed loose, there is no possibility that the nut 15 will become loose. Therefore, the reliability of assembling the oil cooler 11 can be increased. Further, any liquid leakage between the nut 15 and the connector 12 is reliably sealed by the gasket 16 interposed between the tightening nut 18, so that the reliability of the aluminum tank 10 itself is not reduced.

(G) Effects of the invention As described above, according to the invention, an excellent effect is that an oil cooler with a built-in radiator made of a different metal other than aluminum can be easily attached to an aluminum tank as an integrated brazed structure. play.

[Brief explanation of the drawing]

Fig. 1 is a front view of a radiator with an oil cooler attached, Fig. 2 is a sectional view showing a conventional oil cooler mounting structure, and Fig. 3 is an assembled state of the mounting structure according to an embodiment of the present invention before soldering. FIG. 4 is a cross-sectional side view of the main part showing the assembled structure after soldering. 10...Aluminum tank, 11...Oil cooler, 12...Connector, 14...Pipe, 1
5...Nut, 16...Gasket, 17...Washer, 18...Tightening nut.

Claims (1)

[Scope of utility model registration request] The mounting structure is such that the connectors provided at both ends of the oil cooler built into the aluminum tank are attached so as to protrude from the tank wall, and nuts made of clad material are screwed into the connectors with the tank wall in between, and the oil cooler is attached to the aluminum tank. 1. A mounting structure for an oil cooler with a built-in radiator, characterized in that a tightening nut is screwed to the nut through a gasket and a washer, in addition to firing brazing.