JP2000204920A - Mounting structure of oil cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain the deformation of a core part due to a fastening load of a center bolt, prevent the looseness of the bolt, and realize an oil cooler made of aluminum. SOLUTION: An oil cooler is fixed to an engine block 10 by bolts 30 using stays 28a provided on an outer peripheral side of the oil cooler. Since load applied to a core part 20 is reduced and further the load is dispersed over the whole of the oil cooler, stress in each part of the oil cooler is extremely decreased, thereby preventing the deformation of the core part 20. Furthermore, since the stress is reduced, the oil cooler can be formed of aluminum having lower strength than iron. Since the thickness of the stays 28a can be reduced, a difference of thermal expansion amount between the bolt 30 made of iron and the stay 28a made of aluminum due to a difference of coefficient of linear expansion is extremely reduced, thereby preventing the looseness of the bolts 30 due to the difference of thermal expansion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil cooler mounting structure for cooling engine oil and transmission oil of a vehicle.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9, an oil cooler 101 for exchanging heat between engine cooling water and oil.
And an oil filter 102 for removing foreign matter in engine oil are integrally assembled.

[0003] The oil cooler 101 has a core 1 for heat exchange.
An iron center bolt 103 penetrates the center of the core portion 101a, and a screw portion 103a formed at one end of the bolt 103 is screwed into the engine block 104, so that the oil is generated by the flange portion 103b of the bolt 103. Cooler 101 is fixed to engine block 104.

Further, the oil filter 102 having the filter element 102a is screwed into a screw portion 103c formed at the other end of the center bolt 103, so that the oil filter 102 is integrally assembled with the oil cooler 101. A packing 105 is arranged between the oil cooler 101 and the engine block 104, and the oil cooler 1
The packing 106 is arranged between the oil filter 102 and the oil filter 102.

[0005] Oil discharged from an oil pump (not shown) is supplied to the engine block 1 as indicated by an arrow.
04, flows into the core portion 101a from the passage 104a, is cooled by exchanging heat with engine cooling water while passing through the core portion 101a, and then flows into the filter element 102a to remove foreign matter in the oil. Through the hole 103d at the center of the bolt 103, it reaches the oil main gallery of the engine (not shown).

[0006]

As described above, conventionally, the oil cooler 101 is tightened with one center bolt 103, and is tightened with a very large force for the reason described later. Since this load is concentrated on the central portion of the oil cooler 101, in order to prevent deformation of the core portion 101a due to the tightening load, the core portion 101a
A ring-shaped collar 101b is arranged in a so that the collar 101b receives a load.

[0007] In recent years, there has been a demand for the oil cooler 101 to be made of aluminum due to needs for weight reduction or the like. However, it was found that when the oil cooler 101 was converted to aluminum with the conventional structure, the iron center bolt 103 was loosened due to settling of the aluminum component.

That is, since aluminum is softer than iron, the collar 101b, which receives the tightening load of the center bolt 103, is apt to be set. Furthermore, since aluminum has a larger coefficient of linear expansion than iron, the collar 101b also suffers from settling due to a cooling / heating cycle (repeated temperature changes associated with engine operation and shutdown). As a result, the center bolt 103 is loosened, and the oil cooler 101 rattles in the vertical direction in FIG. 9, possibly leading to oil leakage from the packings 105 and 106.

Also, as shown in FIG. 9, when the oil filter 102 is assembled integrally with the oil cooler 101 using the center bolt 103, the tightening load of the oil cooler 101 decreases as the oil filter 102 is attached. In order to prevent the bolt 103 from being loosened when the oil filter 102 is removed, it is necessary to tighten the bolt 103 with a larger force.
Therefore, the set-off of the collar 101b becomes particularly conspicuous, and bolt loosening is more likely to occur.

The present invention has been made in view of the above points, and has as its object to suppress deformation of a core portion due to a tightening load of a center bolt and to prevent bolt loosening.

[0011]

In order to achieve the above object, according to the first to fourth aspects of the present invention, there is provided an oil cooler mounting structure including a core portion (20) for performing heat exchange. A bolt through hole (26
z, 28z, 70a).
8a, 70) and the mounting stays (26b, 28).
a, 70) are fastened to the mounting member (10) with bolts (30) to fix the oil cooler, and a center bolt (32) that penetrates the oil cooler and has one end fixed to the mounting member (10) is provided. An oil filter (50) for removing foreign matter therein is screwed and fixed to the other end of the center bolt (32).

According to this, the oil cooler is fixed to the mounting member (10) using the mounting stays (26b, 28a, 70) provided on the outer peripheral side thereof, so that the core portion (20).
Is applied only to the mounting load of the oil filter (50), or the mounting load and the mounting stay (26b, 28
a, 70) is only the oil cooler mounting load transmitted. And since those loads are comparatively small and the load is distributed to the whole oil cooler, the stress of each part of the oil cooler becomes extremely small. Therefore, the deformation of the core portion (20) can be suppressed, and the portion corresponding to the conventional collar 101b can be reduced in thickness, and the passage area of the core portion (20) increases by that much, thereby reducing the pressure loss. be able to.

Further, since the stress of each part of the oil cooler is reduced, it is possible to form the oil cooler with aluminum having lower strength than iron.

Moreover, it is possible to prevent the iron bolt (30) from being loosened when the oil cooler is made of aluminum. That is, since the thickness of the mounting stays (26b, 28a, 70) can be significantly reduced as compared with the total thickness of the conventional collar 101b, the bolt (30) and the mounting stay (2) can be used.
6b, 28a, 70), the difference in the amount of thermal expansion due to the difference in linear expansion coefficient is significantly reduced, and it is possible to prevent the bolt (30) for fixing the oil cooler from becoming loose.

According to the second aspect of the present invention, one end of the oil cooler has the mounting surface (1) of the mounting member (10).
2) and a plate-like plate (2
8) is arranged, and the mounting stay (28a) is attached to the plate (2).
8) is provided integrally.

According to this, a particularly remarkable effect is obtained when the oil cooler and the oil filter (50) are assembled integrally. That is, since the mounting stay (28a) is provided on the other end side (oil filter mounting side) of the oil cooler, the oil cooler and the oil filter (50) are fixed at a position close to their center of gravity. The moment when a vibration load is applied is reduced, which is advantageous in terms of vibration resistance.

According to the third aspect of the present invention, the oil cooler includes a plate-like plate (26) disposed between the oil cooler and the mounting surface (12) of the mounting member (10). And a mounting stay (26b) is integrally provided.

According to this, the tightening load of the bolt (30) is not applied to the core part (20) at all, and the core part (20)
This is advantageous in terms of preventing deformation.

According to the fourth aspect of the present invention, the mounting member (10) has an extension (13) extending from the mounting surface (12) toward the other end of the case (27). The mounting stay (28a) provided on the oil cooler is fastened and fixed to the end face of the portion (13), which is particularly suitable for implementing the invention according to claim 2.

According to the fifth aspect of the present invention, the oil cooler includes a mounting stay (70) having a bolt through hole (70a) on an outer peripheral side thereof, and the oil cooler and the mounting stay (70) are separately provided. The oil cooler and the mounting stay (70) are formed with positioning means (26c-26k, 28e-28g, 70b-70j) capable of positioning the mounting stay (70) at an arbitrary position on the outer peripheral portion of the oil cooler.
And the positioning means (26c to 26k, 28
e-28g, 70b-70j) and then joined, and the oil cooler is fixed by fastening the mounting stay (70) to the mounting member (10) with the bolt (30).

According to this, the positioning means (26c-2)
6k, 28e to 28g, 70b to 70j) can facilitate positioning of the mounting stay (70).
Furthermore, since the oil cooler and the mounting stay (70) are formed separately and joined, even if the mounting position of the bolt (30) differs depending on the engine, for example, the mounting stay (70) is replaced or the mounting stay is replaced. (7
0) can be dealt with by changing the mounting position of the plate (26, 28) in the circumferential direction, and can be common except for the mounting stay (70). Therefore, it is easy to cope with multi-product production, and it is advantageous in terms of cost.

Further, according to the invention as set forth in claim 6, an oil cooler mounting structure including a core portion (20) for performing heat exchange, wherein one end of the oil cooler is mounted on a mounting member (10).
A mounting stay (26b) having a bolt through hole (26z) is provided on the outer peripheral side of the oil cooler, and the mounting stay (26b) is attached to the mounting member by a bolt (30). The oil cooler is fixed by tightening to (10), a plate-like plate (28) is arranged on the other end of the oil cooler, and a center bolt (60) having one end fixed by the plate (28) and the oil cooler. And the other end of the center bolt (60) is connected to a plate (2).
8) An oil filter (50) projecting from the above (8) and removing foreign matter in oil is screwed and fixed to the other end of the center bolt (60).

According to this, since the tightening load of the oil filter (50) is not applied to the core (20), the load applied to the core (20) is transmitted to the oil cooler via the mounting stay (26b). It becomes only load. And since those loads are comparatively small and the load is distributed to the whole oil cooler, the stress of each part of the oil cooler becomes extremely small. Therefore, the deformation of the core portion (20) can be suppressed, and the conventional collar 101 can be prevented.
The portion corresponding to b can be reduced in thickness, and the passage area of the core portion (20) increases by that much, so that the pressure loss can be reduced.

Further, since the stress of each part of the oil cooler is reduced, it is possible to form the oil cooler with aluminum having lower strength than iron.

Moreover, when the oil cooler is made of aluminum, the iron bolt (30) can be prevented from loosening. That is, since the thickness of the mounting stay (26b) can be significantly reduced as compared with the total thickness of the conventional collar 101b, the difference in the amount of thermal expansion due to the difference in linear expansion coefficient between the bolt (30) and the mounting stay (26b). And the bolt (30) for fixing the oil cooler can be prevented from loosening.

Further, the invention according to claim 7 is characterized in that the oil cooler is made of aluminum, and the oil cooler can be reduced in weight.

The symbols in parentheses above indicate the correspondence with the specific means described in the embodiment described later.

[0028]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention.

(First Embodiment) FIG. 1 shows an example in which the present invention is applied to an oil cooler for cooling engine oil (hereinafter, abbreviated as oil) of a vehicle. Reference numeral 10 denotes an engine block (not shown) of a water-cooled engine. A mounting member), 11 is a passage formed in the engine block 10 and communicates with a discharge port of an oil pump (not shown), 12 is a mounting surface on the engine block 10 side to which an oil cooler is mounted, and 13 is an upward from the mounting surface 12 in the figure. In the present example, two cylindrical extension portions are provided, and two screw portions 14 are formed above the extension portions.

Reference numeral 20 denotes an oil cooler core (hereinafter abbreviated as a core) for exchanging heat between engine cooling water (hereinafter abbreviated as cooling water) and oil. The core portion 20 is formed by laminating and brazing two types of core plates 21 and 22 which are press-formed into a predetermined shape in a substantially circular shape to form a tube in which a passage through which oil flows is formed. The inner fins 23 and 24 having a substantially rectangular wave shape are alternately stacked and brazed between the plates 21 and 22.

There are two types of inner fins 23 and 24. One inner fin 23 is located inside the tube, and the other inner fin 24 is located outside the tube. The core plates 21 and 22 have openings 21 respectively.
a, 22a are formed, and the openings 21a, 22a allow the oil flow in the core portion 20 in the vertical direction in the drawing.

A cylindrical sleeve 25 is disposed on the inner peripheral side of the core portion 20, and a substantially circular plate-like first plate 26 is disposed on the lower end side of the core portion 20 in the drawing.
Reference numeral 6 has a hole 26a at an intermediate portion, and a sleeve 25 is inserted into an inner peripheral portion thereof. The upper end side and the outer peripheral side in the drawing of the core part 20 are cup-shaped cases 27 having a hole in the center.
The sleeve 25 is inserted into the inner peripheral portion of the case 27, and the lower end of the outer peripheral portion of the case 27 is inserted into the first plate 26.

Further, a substantially circular plate-shaped second plate 28 is disposed above the case 27 in the figure, and the second plate 2
8, two mounting stays 28a are formed at positions opposite to each other by 180 °, and an oil passage 2 is formed on the inner peripheral side.
8b are formed.

The mounting stay 28a protrudes further outward than the outer peripheral portion of the case 27, and a bolt 30
A bolt through hole 28z through which the bolt passes is formed. Note that the mounting stay 28a may have a shape protruding from the center of the second plate 28 in the form of two ears.
The entire outer periphery of the thick portion on the center side of the flange 8 may be formed in a flange shape, and a bolt through hole 28z may be formed at a predetermined position.

A connection pipe for connecting a cooling water pipe (not shown) is brazed to the outer peripheral surface of the case 27,
Cooling water flows through the core space 31 in which the core portion 20 is stored.

By the way, the sleeve 25, the two plates 2
6, 28, the case 27 and the core part 20 are all made of aluminum (for example, A3000 series), and a part of them is a double-sided clad material in which the front and back surfaces are covered with a brazing material. Then, the oil cooler is brazed in a state where the constituent parts constituting the oil cooler are stacked as illustrated.

The oil cooler integrated by brazing is mounted on the engine block 10 with two iron bolts 30 with a packing 29 interposed between the first plate 26 and the mounting surface 12. . The bolt 30 penetrates the bolt through hole 28z of the mounting stay 28a, and the extension 1
3 is screwed into the screw portion 14.

Before mounting the oil cooler, an iron center bolt 32 is mounted on the engine block 10. The center bolt 32 is provided with screw portions 32 formed at both ends.
a, 32b, a hole 32c penetrating the center portion, and a flange portion 32d provided on the outer peripheral portion. The upper side of the flange portion 32d in FIG. The screw portion 32a protrudes.

An oil filter 50 comprises a cup-shaped case 51 and a circular plate 52 joined to an end of the case 51. In this case, a cylindrical filter element (hereinafter abbreviated as “element”) 53 for filtering foreign substances in oil circulating in the engine is arranged, and a disc spring 54 is arranged between the element 53 and the case 51. .

The plate 52 has a screw portion 52a formed at the center and a plurality of holes 52b formed at an intermediate portion. Then, with the packing 55 interposed between the plate 52 and the second plate 28 of the oil cooler, the screw portion 52a of the plate 52 is screwed to the screw portion 32 of the center bolt 32.
The oil filter 50 is integrally attached to the oil cooler by screwing the oil filter 50 into the oil cooler.

Next, the operation of the oil cooler and the oil filter 50 will be briefly described. From the passage 11 of the engine block 10 to the hole 26a of the first plate 26
The oil guided into the core portion 20 through the
When passing through the inside, heat exchange (cooling) is performed with cooling water flowing in the core space 31. The heat-exchanged oil flows into the oil filter 50 through the passage 28b of the second plate 28 and the hole 52b of the plate 52 of the oil filter 50. After the impurities are removed by the element 53, the center bolt 32 Through the hole 32c to reach the oil main gallery of the engine, lubricate each sliding portion of the engine, and return to the oil pan.

Next, the features of this embodiment will be described.

First, since the oil cooler is fixed to the mounting member 10 using the mounting stay 28a, the oil cooler mounting load transmitted through the mounting stay 28a when the bolt 30 is tightened and the oil cooler are fixed to the core portion 20. Filter 5
0 mounting load is applied. However, both have relatively small loads, and the load is received by the entire oil cooler, so that the stress of each part of the oil cooler becomes extremely small. Therefore, the deformation of the core portion 20 can be suppressed, and the portion corresponding to the conventional collar 101b can be made thinner, and the passage area of the core portion 20 increases by that much, and the pressure loss can be reduced.

Further, since the stress of each part of the oil cooler is reduced, it is possible to form the oil cooler with aluminum having lower strength than iron.

Further, since the stress of each part of the oil cooler is reduced as described above, it is possible to form the oil cooler with aluminum having lower strength than iron.

In addition, even when the oil cooler is made of aluminum, the bolt 30 can be prevented from loosening because the mounting stay 28a has little settling. That is, since the bolts 30 are fixed with a plurality of (two in this example) bolts, the tightening load is dispersed, and the stress of the mounting stay 28a is reduced, so that the set is less likely to occur. In addition, the conventional color 10
1b, the thickness of the mounting stay 28a can be greatly reduced, so that the difference in the amount of thermal expansion due to the difference in linear expansion coefficient between the bolt 30 and the mounting stay 28a is significantly reduced.
It is possible to prevent the bolt 30 fixing the oil cooler from becoming loose.

Since the mounting stay 28a is provided on the other end side of the case 27 (the oil filter mounting side),
The oil cooler is fixed at a position close to the center of gravity of the oil cooler. Therefore, the moment when a vibration load is applied is reduced, which is advantageous in terms of vibration resistance.

The mounting surface 12 of the engine block 10
Since the extension 13 is provided to extend outwardly from the shaft and the screw 14 is formed in the extension 13, the screw 14 does not protrude into the engine block 10, and the internal space of the engine block 10 can be effectively utilized.

The tightening load of the bolt 30 and the mounting load of the oil filter 50 are applied to the outer peripheral portion or the entirety of the oil cooler, but the outer peripheral portion has a longer peripheral length than the inner peripheral portion. Therefore, it is possible to prevent deformation without increasing the thickness of the case 27 so much.

Moreover, in the prior art (see FIG. 9), the amount by which the tightening load of the oil cooler 101 is reduced with the installation of the oil filter 102 and the amount by which the bolt 103 is prevented from being loosened when the oil filter 102 is removed are expected. Thus, the center bolt 103 is strongly tightened. However, according to the present embodiment, the tightening force for reducing the tightening load and the tightening force for preventing the loosening are unnecessary, the load applied to the case 27 is reduced, and the strength of the case 27 is secured. Easy.

Further, since the oil cooler is fixed by the plurality of bolts 30, an effect of preventing the oil cooler from rotating can be obtained.

In order to seal between the center bolt 32 and the sleeve 25, the center bolt 32 and the sleeve 25
A packing may be provided between the first plate 26 and the flange portion 32d, and the number of the bolts 30 and the mounting stays 28a may be increased as necessary.

Further, the present invention is applicable not only to an aluminum oil cooler but also to an iron oil cooler.

(Second Embodiment) FIG. 2 shows a second embodiment in which the mounting stay 28a is provided on the second plate 28 in the first embodiment, whereas the first plate 26 is provided in the second embodiment. Is different in that two mounting stays 26b each having a bolt through hole 26z are provided on the outer peripheral portion thereof.

In the second embodiment, the engine block 1
This is advantageous in that the zero extension 13 is not required.

The load acting on the oil cooler is only the mounting load of the oil filter 50, and the tightening load of the bolt 30 is not applied at all, so that the deformation of the oil cooler can be prevented more reliably.

(Third Embodiment) FIG. 3 shows a third embodiment, in which the configurations of the second plate 28 and the center bolt 32 in the second embodiment are changed.

In FIG. 3, an iron center bolt 60 is provided.
Has a screw portion 60a and a hole portion 60b, and further has a flange portion 60c at the lower end side in the figure. This flange 6
In 0c, a plurality of through holes 60d are formed. The second plate 28 has a concave portion 28c in which the flange portion 60c is embedded and a plurality of convex portions 28d inserted into the through hole 60d.
Are formed.

At the time of brazing the oil cooler, the bolts 60 are assembled at the positions shown in the drawing, so that the bolts 6
Numeral 0 is fixed to the oil cooler between the case 27 and the second plate 28. The lower end surface of the convex portion 28d in FIG.

An aluminum pipe 61 having a flange 61a and a hole 61b is brazed or press-fitted to the lower end of the sleeve 25 in the drawing. Further, the space between the pipe 61 and the engine block 10 is sealed by an O-ring 62.

In this embodiment, the oil filter 50
Is screwed into the screw portion 60a of the center bolt 60, the oil filter 50 is pressed toward the oil cooler (downward in FIG. 3), and the center bolt 60 is pulled toward the oil filter 50. Therefore, the tightening load of the oil filter 50 is applied only to the second plate 28 disposed between the oil filter 50 and the center bolt 60, and is not applied to the case 27 or the core 20. Therefore, it is advantageous in preventing deformation of the case 27 and the core portion 20. The second plate 2 brazed to the case 27
Since the flange portion 60c is fixed by the protruding portion 28d of 8, the backlash of the center bolt 60 is prevented from occurring.

Further, since the thickness of the second plate 28 is much smaller than the thickness of the core portion 20 (the height in the vertical direction in the figure), the difference in the amount of thermal expansion between the bolt 60 and the second plate 28 is reduced. Is also small.

Further, since the bolt 60 is integrated with the oil cooler, the number of steps for assembling the bolt to the engine can be reduced. Further, the convex portion 28d also serves to prevent the bolt 60 from turning.

(Fourth Embodiment) FIG. 4 shows a fourth embodiment, in which a mounting stay 70 is separately provided so that even if the position of the screw portion 14 of the engine block 10 differs depending on the engine, it can be easily handled. It is what it was.

In FIG. 4, on the outer peripheral portion of the first plate 26, tooth-shaped concave portions 26c and convex portions 26d are formed alternately and continuously over the entire circumference. The aluminum mounting stay 70 is also provided with a plurality of tooth-shaped concave portions 70b and convex portions 70c. Then, the concave and convex portions 70b and 70c of the mounting stay 70 are fitted to the concave and convex portions 26c and 26d of the first plate 26, and the first plate 26 and the mounting stay 70 are brazed.

For an engine in which the circumferential position of the thread portion of the engine block is different, the first plate 26
The circumferential fitting position between the shaft and the mounting stay 70 corresponds to each engine. In addition, for an engine in which the screw portion of the engine block has a different radial position, a bolt through hole 7
A different mounting stay 70 having a different 0a position is used for the correspondence.

Further, on the outer peripheral portion of the second plate 28, similarly to the first plate 26, tooth-shaped concave portions 28e and convex portions 28f are formed alternately and continuously over the entire circumference. When the extended portion 13 is formed as in the first embodiment, the concave and convex portions 28e of the second plate 28,
The concave and convex portions 70b and 70c of the mounting stay 70 are fitted to 8f, and the second plate 28 and the mounting stay 70 are brazed and used.

Reference numeral 80 denotes an aluminum connection pipe for connecting a cooling water pipe (not shown).
7 brazed.

In this embodiment, since the mounting stay 70 is provided separately, even if the mounting position of the bolt differs depending on the vehicle, the mounting stay 70 must be replaced or the plate 2 must be replaced.
A change in the circumferential mounting position of the mounting stay 70 relative to the mounting stays 6 and 28 can be dealt with, and components other than the mounting stay 70 can be shared. Therefore, it is easy to cope with multi-product production, and it is advantageous in terms of cost.

Each of the concave and convex portions (positioning means) 26c,
By using 26d, 28e, 28f, 70b, 70c, positioning of the plates 26, 28 and the mounting stay 70 can be facilitated.

Further, since the mounting stay 70 is formed separately, only the mounting stay 70 is made of aluminum having high strength (for example, A7000 series), so that the set due to the tightening load can be further reduced.

(Fifth Embodiment) FIG. 5 shows a fifth embodiment, in which the concave and convex portions (positioning means) 26 of the fourth embodiment are used.
It is another example of the fitting structure using c, 26d, 28e, 28f, 70b, 70c. In the present embodiment, a circular hole 26e is formed continuously on the outer periphery of both plates 26 and 28 over the entire circumference, and the mounting stay 70 has a circular convex 70d large enough to fit in the hole 26e. Has formed. Then, the projection 70d of the mounting stay 70 is fitted to a predetermined position of the hole 26e of each of the plates 26 and 28 and brazed.

(Sixth Embodiment) FIG. 6 shows a sixth embodiment, which is another example of the fitting structure. In this embodiment,
In the outer peripheral portion of the first plate 26, a circular hole 26f is formed continuously on the surface opposite to the contact surface with the engine block over the entire circumference, and the mounting stay 70 has the hole 26f.
And a circular convex portion 70e having a size that can be fitted into the convex portion 70e.
Then, the projection 70e of the mounting stay 70 is fitted to a predetermined position of the hole 26f of the plate 26 and brazed.

(Seventh Embodiment) FIG. 7 shows a seventh embodiment, which is another example of the fitting structure. In this embodiment,
On the outer peripheral portion of the first plate 26, a tooth-shaped uneven portion 26g, 2
6h are formed alternately and continuously over the entire circumference.
Further, the mounting stay 70 also has tooth-shaped uneven portions 70f, 7f.
0 g are formed. And the first plate 2
The uneven portions 7 of the mounting stay 70 are attached to the uneven portions 26g and 26h of
The first plate 26 and the mounting stay 70 are brazed and joined by fitting 0f and 70g.

(Eighth Embodiment) FIG. 8 shows an eighth embodiment, which is another example of the fitting structure. In this embodiment,
On the outer peripheral portion of the first plate 26, two slopes 26i, 26
j and a surface 26k located therebetween. These surfaces 26i, 26j, 26k are formed linearly in the range of the predetermined angle α, and therefore the first plate 2
6 has a polygonal outer peripheral portion.

On the other hand, the mounting stay 70 also has the same sectional shape as the surfaces 26i, 26j, 26k of the first plate 26.
Two inclined surfaces 70h and 70i and a surface 70j located between them are formed.

Then, the polygonal top 26m of the first plate 26 and the bending point 70k of the mounting stay 70 are aligned and they are overlapped, and the first plate 26 and the mounting stay 70 are brazed.

(Other Embodiments) In the above embodiments, the oil cooler for cooling the engine oil of the vehicle has been described. However, the present invention is also applicable to an oil cooler for cooling the transmission oil.

In each of the above embodiments, the core space 31
Although an oil cooler of a type in which cooling water flows is shown in FIG. 1, the present invention is also applicable to an oil cooler of a type in which an oil passage and a cooling water passage are alternately formed in a core portion in which core plates are laminated. In this type of oil cooler,
Since the core space 31 as the cooling water passage is unnecessary, the case 27 is not provided.

Further, in each of the above embodiments, the mounting stay is disposed at the end of the oil cooler (the engine block side or the oil filter side). However, the mounting stay may be disposed at an intermediate position of the oil cooler.

The present invention is also applicable to a type of oil cooler without the filter 50.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of an oil cooler showing a second embodiment of the present invention.

FIG. 3 is a sectional view of an oil cooler showing a third embodiment of the present invention.

FIG. 4 is a perspective view of an oil cooler showing a fourth embodiment of the present invention.

FIG. 5 is a perspective view of an oil cooler showing a fifth embodiment of the present invention.

FIG. 6 shows a main part of a sixth embodiment of the present invention,
(A) is a plan view of a plate, (B) is an AA sectional view of (A), (C) is a plan view of a mounting stay, and (D) is a BB sectional view of (C).

FIG. 7 shows a main part of a seventh embodiment of the present invention.
(A) is a plan view of a plate, (B) is a C view of (A),
(C) is a plan view of the mounting stay, and (D) is a D view of (C).

FIG. 8 shows a main part of an eighth embodiment of the present invention.
(A) is a plan view of a plate, (B) is a cross-sectional view taken along line EE of (A), (C) is a plan view of a mounting stay, (D) is a cross-sectional view taken along line FF of (C), (E). FIG. 7 is a plan view showing an assembled state of the plate and the mounting stay, and FIG. 7F is a sectional view taken along line GG of FIG.

FIG. 9 is a sectional view of a conventional oil cooler.

[Explanation of symbols]

10: engine block (mounting member), 12: mounting surface,
13: extension, 20: core, 26, 28: plate 2
7 ... case, 30 ... bolt, 32 ... center bolt, 50
... Oil filters, 26b, 28a, 70 ... Mounting stays, 26c-26k, 28e-28g, 70b-70j
... Positioning means 26z, 28z, 70a.

Claims (7)

[Claims] 1. An oil cooler mounting structure comprising a core portion (20) for exchanging heat between engine cooling water and oil, wherein the oil cooler has a bolt through hole (26) on its outer peripheral side.
z, 28z, 70a).
8a, 70) and the mounting stays (26b, 28).
a, 70) are fastened to the mounting member (10) with bolts (30) to fix the oil cooler, and one end of the oil cooler penetrates the oil cooler.
An oil filter, wherein a center bolt (32) fixed to the center bolt (32) is provided, and an oil filter (50) for removing foreign matter in the oil is screwed and fixed to the other end of the center bolt (32). Cooler mounting structure. 2. One end of the oil cooler faces a mounting surface (12) of the mounting member (10).
The oil cooler mounting according to claim 1, wherein a plate-like plate (28) is arranged on the other end side, and the mounting stay (28a) is provided integrally with the plate (28). Construction. 3. The oil cooler is mounted on the mounting member (1).
And a plate-like plate (26) arranged between the plate (26) and the mounting surface (12), and the mounting stay (26b) is provided integrally with the plate (26). The mounting structure of the oil cooler according to claim 1. 4. The mounting member (10) has an extension (13) extending from the mounting surface (12) toward the other end of the oil cooler. The mounting structure for an oil cooler according to claim 1, wherein the mounting stay (28a) provided on the oil cooler is fastened and fixed. 5. An oil cooler mounting structure comprising a core portion (20) for exchanging heat between engine cooling water and oil, wherein the oil cooler has a bolt through hole (70) formed on an outer peripheral side thereof.
a), wherein the oil cooler and the mounting stay (70) are formed separately, and the oil cooler and the mounting stay (70) may be any part of the outer periphery of the oil cooler. Position the mounting stay (7
0) can be positioned (26c to 26k,
28e to 28g, 70b to 70j) and the positioning means (26c to 26k, 28e to 28g, 70b).
An oil cooler mounting structure characterized in that the oil cooler is fixed by fastening the mounting stay (70) to a mounting member (10) with a bolt (30). 6. An oil cooler mounting structure including a core portion (20) for performing heat exchange between engine cooling water and oil, wherein one end of the oil cooler is attached to a mounting surface (10) of a mounting member (10). 12) and a mounting stay (2) having a bolt through hole (26z) on the outer peripheral side of the oil cooler.
6b), and the mounting stay (26b) is connected to the bolt (3).
0), the oil cooler is fastened to the mounting member (10), and a plate-like plate (28) is arranged on the other end side of the oil cooler. Is provided with a fixed center bolt (60),
Connect the other end of the center bolt (60) to the plate (2).
8) An oil cooler mounting structure, wherein an oil filter (50) projecting from the oil filter and removing foreign matter in the oil is screwed and fixed to the other end of the center bolt (60). 7. The mounting structure for an oil cooler according to claim 1, wherein the oil cooler is formed of aluminum.