JPH1073392A - Oil cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a connection piping layout to an air-cooled type oil cooler by protrusively arranging an oil inflow pipe and an oil outflow pipe at angle positions different from each other about a longitudinal axis of a body. SOLUTION: This oil cooler is applied for a water-cooled type oil cooler built in a radiator tank 11 of a vehicle. A cylindrical body 21 into which flows an oil to be cooled has an oil inflow pipe 22 and an oil outflow pipe 23 protrusively arranged separately on the side of the body 21. Then, the oil inflow pipe 22 and the outflow pipe 23 are protrusively arranged at angle positions different from each other about the longitudinal axis of the body 21 to simplify a connection piping layout to an air-cooled type oil cooler.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an oil cooler housed in a radiator tank of a vehicle.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional example, in which an oil cooler 2 is inserted into a lower tank 1a of a radiator 1. FIG. The oil flows into the oil cooler body 2a from the pipe 3 through the oil inflow pipe 2b, is cooled by the engine cooling water in the lower tank 1a, and then is cooled from the oil outflow pipe 2c through the pipe 4 to the air cooling in front of the vehicle. It is guided to the oil cooler 5. The air-cooled oil cooler 5 is located in front of the first cross member 6 of the vehicle, where the further cooled oil is guided through a pipe 7 to the rear.

[0003] As can be seen from the figure, in the conventional oil cooler 2, the inflow pipe 2b and the outflow pipe 2c are previously provided integrally with the main body 2a at the same angular position in the circumferential direction (around the longitudinal axis) of the main body (in other words, in other words). Then, the two pipes 2b and 2c are projected so as to face the same direction). In order to store the oil cooler 2 in the radiator lower tank 1a, as shown in FIG. 6, the inflow / outflow pipes 2b and 2c are initially slanted and the main body 2a is moved out of the hole 1b of the lower tank 1a into the tank 1a. Insert, then pipes 2b, 2
The main body 2a is rotated so that c is horizontal, and then the gap between the hole 1b and the pipes 2b and 2c is sealed.

[0004]

When the oil inflow / outflow pipes 2b and 2c are provided at the same angular position on the main body 2a as described above, the oil cooler 3 can be inserted into the radiator tank 1a without any difficulty. On the other hand, when an oil cooling system incorporating the air-cooled oil cooler 5 is constructed, there is a problem that the piping layout becomes complicated as shown in FIG. 5 and the number of parts and the cost increase.

It is an object of the present invention to provide an oil cooler in which the layout of connecting pipes to an air-cooled oil cooler is simplified to reduce costs.

[0006]

FIG. 3 shows an embodiment of the present invention.
4 and FIG. 4, the present invention includes a cylindrical main body 21 into which oil to be cooled flows, and an oil inflow pipe 22 and an oil outflow pipe 23 projecting from side surfaces of the main body 21, respectively. The present invention is applied to a water-cooled oil cooler built in a radiator tank 11 of a vehicle. Then, the oil inflow pipe 22 and the oil outflow pipe 23 are protruded at different angular positions around the longitudinal axis of the main body 21 to solve the above problem. Claim 2
According to the invention, the oil inflow pipe 22 is provided so as to protrude from the oil outflow pipe 23 at a position rotated by about 180 degrees around the longitudinal axis of the main body 21. The invention according to claim 3 is characterized in that the oil inflow pipe 22 and the oil outflow pipe 23
At least one of them is attached to the main body 21 after the main body 21 is accommodated in the radiator tank 11. The invention according to claim 4 is characterized in that the oil in the body 21 is the radiator tank 11
A seal member 41 for preventing leakage into the inside and a seal member 42 for preventing engine cooling water in the radiator tank 11 from entering the main body 21 are attached to the main body 21. Things. Claim 5
According to the invention, a pipe line 4 'for guiding oil in an oil cooler to a separate air-cooled oil cooler 5 (FIG. 1) provided at a front portion of the vehicle is connected to an oil outflow pipe 23. It is.

[0007] In the section of the means for solving the above-mentioned problems, which explains the configuration of the present invention, the drawings of the embodiments are used to facilitate understanding of the present invention. However, the present invention is not limited to this.

[0008]

According to the present invention, the oil inflow pipe and the oil outflow pipe protrude at different angular positions about the longitudinal axis of the main body, so that, for example, a separate air-cooled oil provided at the front of the vehicle is provided. The piping layout for connecting to the cooler can be simplified as compared with the conventional case, and the cost can be reduced.
In particular, if at least one of the oil inflow pipe and the oil outflow pipe is attached to the main body after the main body is accommodated in the radiator tank, the oil cooler can be easily stored in the radiator tank. The retrofitted pipe is connected via a seal member for preventing oil in the main body from leaking into the radiator tank and a seal member for preventing engine cooling water in the radiator tank from entering the main body. If it is attached to the main body, oil leakage and water leakage can be reliably prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view showing an oil cooler structure according to the present embodiment, and FIG. 2 is a view seen from the line II-II, and the same components as those in FIG. The lower tank 11 of the radiator 10 incorporates a water-cooled oil cooler 20 according to the present invention. The oil cooler 20 has a cylindrical main body 21, an oil inflow pipe 22 protruding from one end of the main body 21, and an oil outflow pipe 23 protruding from the other end of the main body 21. The oil inflow pipe 22 is connected to the oil outflow pipe 2
3 is protruded at a position rotated by approximately 180 degrees in the circumferential direction of the main body (around the longitudinal axis). In other words, the inflow pipe 22 and the outflow pipe 23 are provided so as to project in opposite directions.

Although the flow of the oil is the same as that of the prior art, in this embodiment, since the inflow / outflow pipes 22 and 23 are opposite to each other, a pipe for guiding the outflow oil to the air-cooled oil cooler 5 is provided. The configuration of the road 4 'can be greatly simplified as compared with the conventional example shown in FIG. This can reduce the number of parts and cost.

However, the inflow / outflow pipes 22, 2
In a configuration in which the oil cooler 20 faces the opposite direction, the oil cooler 20 can be provided with the radiator lower tank 1.
1 is difficult, and the method described with reference to FIG. 6 cannot be simply employed. Therefore, in the present embodiment, the oil outflow pipe 23 is previously formed integrally with the main body 21 as before, but the oil inflow pipe 22 is formed separately so as to be attached after the main body 21 is accommodated in the lower tank 11. You. Hereinafter, the detailed configuration will be described with reference to FIGS.

FIG. 3 is a plan view showing the oil cooler 20 housed in the lower tank 11, and FIG. 4 is a partially enlarged view thereof. The oil inflow pipe 22 has a screw portion 22a and a flange portion 22b as shown in FIG. 4, and the screw portion 22a can be screwed into a screw hole 21a formed in the main body 21. The oil cooler 20 is provided with the inflow pipe 22.
Is inserted into the lower tank 11 before being attached. That is, similarly to the case described with reference to FIG.
The body 21 is inserted into the tank 11 while obliquely projecting outward from the hole 11a of the lower tank 11, and then the pipe 2
The body 21 is rotated so that 3 is horizontal. At this time, the screw hole 21a of the main body 21 is
overlaps with b.

In this state, the threaded portion 22a of the oil inflow pipe 22 is screwed into the threaded hole 21a of the main body 21 through the hole 11b. At this time, two O-rings 41 and 42 having different diameters are interposed as seal members. Inner O-ring 41
Is narrowed between the flange portion 22b and the outer surface of the main body 21 to prevent oil leaking from the screw hole 21a from leaking outside. The outer O-ring 42 is
The pressure is narrowed between the inner surface of the lower tank 11 and the outer surface of the main body 21 via b, thereby preventing leakage of engine cooling water in the lower tank 11. The O-ring 42 is made of a material such as EPDM (ethylene propylene diene rubber), but the O-ring 41 is made of a material more durable against heat and oil.

As described above, in the present embodiment, the oil inflow pipe 22 is attached to the main body 21 after the oil cooler main body 21 is accommodated in the lower tank 11, so that the oil cooler 20 can be easily stored in the tank 11. Can be done.

The shape of the oil cooler is not limited to the embodiment, but may be any other shape as long as it is accommodated in the radiator tank. Further, the mounting structure for mounting the pipe after being stored in the radiator tank is not limited to that shown in FIG. Further, in the above description, the oil inflow pipe is retrofitted, but the oil outflow pipe may be retrofitted, or both pipes may be retrofitted.

[Brief description of the drawings]

FIG. 1 is a plan view showing an oil cooler according to the present invention and a peripheral portion thereof.

FIG. 2 is a view taken along line II-II in FIG.

FIG. 3 is a cross-sectional plan view illustrating a configuration of an oil cooler.

FIG. 4 is an enlarged view of a main part of FIG. 3;

FIG. 5 is a plan view showing a conventional oil cooler and its peripheral portion.

FIG. 6 is a diagram illustrating a method of attaching a conventional oil cooler.

[Explanation of symbols]

 3, 4 ', 7 Pipeline 5 Air-cooled oil cooler 6 First cross member 10 Radiator 11 Lower tank 20 Water-cooled oil cooler 21 Main body 22 Oil inflow pipe 22a Screw section 22b Flange section 23 Oil outflow pipe 41, 42 O-ring

Claims (5)

[Claims] An oil inflow pipe and an oil outflow pipe projecting from a side surface of the main body into which oil to be cooled flows, and are built in a radiator tank of the vehicle. In a water-cooled oil cooler, the oil inflow pipe and the oil outflow pipe are provided at different angular positions around a longitudinal axis of the main body. 2. The oil inflow pipe protrudes from the oil outflow pipe at a position rotated by about 180 degrees around a longitudinal axis of the main body.
An oil cooler as described in. 3. The apparatus according to claim 1, wherein at least one of the oil inflow pipe and the oil outflow pipe is attached to the main body after the main body is accommodated in the radiator tank. Or 2
An oil cooler as described in. 4. A pipe attached to the main body after the main body is housed in the radiator tank, wherein a seal member for preventing oil in the main body from leaking into the radiator tank is provided. The oil cooler according to claim 3, wherein the oil cooler is attached to the main body via a seal member for preventing the engine cooling water from entering the main body. 5. The oil outflow pipe is connected to a pipeline for guiding oil in the oil cooler to a separate air-cooled oil cooler provided at a front part of a vehicle. 5. The oil cooler according to any one of 1 to 4.