JP2001180299A - Resin-made tank for radiator incorporated with oil cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To integrally form locking portions on an outer surface of a tank, capable of certainly holding an oil pipe provided along the outer surface of a tank main body, in a resin-made tank for a radiator incorporated with an oil cooler. SOLUTION: On the outer surface of the tank main body, a pair of a first locking portion 6 and a second locking portion 7 are integrally arranged with it slightly separated. A hook-shaped opening side of the first locking portion 6 is directed toward a bottom surface side of the tank main body 1, and a hook-shaped opening side of the second locking portion 7 is the oppositely directed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a resin tank for a radiator for cooling engine cooling water for an automobile, in which an oil cooler is inserted, and an oil pipe is connected to the oil cooler from the outer surface of the tank. About things.

[0002]

2. Description of the Related Art An oil cooler for cooling oil for an automatic transmission is provided in a tank on the outlet side of a radiator. A conventional oil cooler mounting structure is shown in FIG. In this configuration, a pair of bosses for an oil outlet is provided at both ends of the oil cooler 2 so as to project therefrom, and a pair of through holes are formed in the side wall of the tank body 1 in alignment therewith. Then, the boss portions were inserted into the through holes in a liquid-tight manner, and the ends of the oil pipes 5 and 9 were connected thereto. One of the oil pipes 5 is bent along the outer surface of the tank body 1 and is guided to the vicinity of the other oil pipe 9.
Was fastened and fixed. Thus, both oil pipes 5,
In order to bring the open ends of the oil pipes 9 close to each other, a pair of oil hoses (not shown) is arranged close to each other,
9 is required to be rationally connected.

Further, instead of fixing the oil pipe 5 to the tank main body 1 by the mounting bracket 22, as shown in FIG. 10, a tank body 1 having a U-shaped gripping projection 23 formed integrally therewith has been proposed. ing. This is made of a material that is integral with the tank body 1 made of synthetic resin, and at least the tip can be elastically expanded and contracted, and the entrance and exit are formed smaller than the center diameter.

[0004]

As shown in FIG. 9, one oil pipe 5 is bent along the outer surface of the tank body 1, and an appropriate position thereof is fastened and fixed to the outer surface of the tank body 1 by a mounting bracket 22. In this case, the number of mounting steps and the number of parts increase, and the manufacturing cost of the radiator increases accordingly. As shown in FIG. 10, when the holding projection 23 is formed integrally with the tank main body 1 and the inlet / outlet portion at the tip thereof is formed smaller than the center diameter, the tip of the holding projection 23 when the oil pipe 5 is mounted is used. There is a disadvantage that the part is easily damaged. Also, the forming of the gripping projection 23 is troublesome. That is, since the opening at the tip end is reduced, it is necessary to incorporate a core rod material that goes in and out along the longitudinal direction of the tank body 1 into the mold, which has a disadvantage of increasing the manufacturing cost of the mold. Moreover, no other protruding object can be formed on the movement locus. Therefore, an object of the present invention is to provide a resin-made tank of a radiator with a built-in oil cooler which eliminates these disadvantages.

[0005]

According to a first aspect of the present invention, an elongated oil cooler 2 is built in an elongated box-shaped resin tank body 1 having one end opened, and the oil cooler is provided. The oil pipe 5 having a pair of oil pipes, one end of which is connected to one side of the connection hole 3, is aligned with the oil inlet / outlet 2 of the tank main body 1, and is longitudinally spaced from the side wall of the tank body 1. In the resin tank of the radiator with a built-in oil cooler guided along the outer surface of the side wall toward the other connection hole 4, the oil pipe 5 is slightly separated in the longitudinal direction near the other connection hole 4. A pair of hook-shaped first locking portions 6 and second
A locking portion 7 is integrally formed so as to protrude from the outer surface of the side wall, and the first locking portion 6 has a hook-shaped opening side facing the bottom surface side of the tank body 1 and a hook-shaped opening side of the second locking portion 7. Is a resin tank of a radiator with a built-in oil cooler, which is arranged in the opposite direction.

According to a second aspect of the present invention, in the first aspect, the oil pipe 5 is provided between the first engagement portion 6 and the second engagement portion 7 and the one connection hole 3. A third locking portion 8 for gripping the outer periphery is integrally formed on the outer surface of the side wall so as to protrude therefrom, and the third locking portion 8 has a gripping surface having a substantially semicircular cross section and an opening side in the outward direction of the outer surface of the side wall. This is a resin-made tank of a radiator with a built-in oil cooler, which is oriented in the same manner as in FIG. According to a third aspect of the present invention, in the second aspect, the upper edge side or the lower edge side of the gripping surface having a substantially semicircular cross section of the third locking portion 8 extends in an outward direction orthogonal to the outer surface of the side wall. This is a resin tank for a radiator with a built-in oil cooler.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cutaway perspective view of a main part of a resin tank according to the present invention, showing a state before an oil pipe is attached. FIG. 2 shows a first step of mounting the oil pipe, FIG. 3 shows a second step thereof, and FIG. 4 shows a third step thereof. FIG. 5 is a front view of an essential part showing one embodiment of the resin tank of the present invention. FIG. 6 is a sectional view taken along the line VI-VI of FIG.
FIG. 8 is a sectional view taken along the line VII-VII, and FIG. 8 is a sectional view taken along the line VIII-VIII.

The radiator tank has a tank body 1 made of a synthetic resin having an open upper end as shown in FIG. 1, and a tube plate 10 for closing the opening in a liquid-tight manner as shown in FIG. An oil cooler 2 is housed in the tank body 1. The oil cooler 2 is of a multi-plate type in this example, has a plurality of flat elements, and has communication holes aligned with each other at both ends in the longitudinal direction of each element. At the ends in the laminating direction, boss portions 12 are protruded from the respective communication holes at the ends in the laminating direction, and the boss portions 12 are inserted into holes in the wall surface of the tank body 1 as shown in FIG. Is done. In this example, the tip of the boss 12 is formed in a cylindrical shape, and a screw portion is formed on the inner and outer peripheral surfaces thereof. Then, a nut 13 is screwed from the outer surface side of the tank body 1 to an outer screw of the boss portion 12,
Further, the hollow bolt 11 is screwed and fastened to the inner screw of the boss portion 12. The oil pipe 9 inserted into the hollow bolt 11
Is crimped between the tip of the hollow bolt 11 and the boss 12, and the components are liquid-tightly fastened and fixed via the O-ring 15.

As shown in FIG. 1, a pair of first locking portions 6 and second locking portions 7 are formed on the outer surface of the tank body 1 in close proximity to each other and integrally formed of a resin material. A third locking portion 8 is similarly formed integrally with the connecting hole 3 so as to protrude integrally with a resin material. The first locking portion 6 and the second locking portion 7 are in the vicinity of the connection hole 4 as shown in FIG. 5 and are slightly separated in the longitudinal direction of the tank body 1 so as to have a hook-like shape as shown in FIG. The first locking portion 6 has a hook-shaped opening side facing the bottom surface of the tank body 1 and the second locking portion 7 is arranged in the opposite direction. Then, the third locking portion 8 is
At an intermediate position between the locking portion 6 and the connection hole 3, the inner periphery of the cross section is substantially semicircular, and the inner peripheral surface is formed outward of the tank body 1. And the upper edge of the inner peripheral surface,
It extends slightly outward. In addition, the inner diameter of the arc-shaped gripping surfaces of the first locking portion 6, the second locking portion 7, and the third locking portion 8 substantially matches the outer diameter of the oil pipe 5.

As shown in FIG. 1, the side surfaces of the first locking portion 6 and the second locking portion 7 facing the distal end are formed as inclined surfaces 24 which are inclined in opposite directions. In order to allow the first locking portion 6, the second locking portion 7, and the third locking portion 8 to grip the oil pipe 5, the mounting is performed as shown in FIGS. At this time, the oil cooler 2 is inserted into the tank body 1, and short cylindrical bosses projecting from both ends thereof are inserted into the connection holes 3. The both ends are fastened and fixed by nuts 13 as shown in FIG. 8, for example. Then, as shown in FIG. 2, both ends are slightly bent, and the other end of the oil pipe 5 in which the hollow bolt 11 is fitted to one end is connected to the first end.
It is inserted between the locking portion 6 and the second locking portion 7. Next, as shown in FIGS. 3 and 4, the entire oil pipe 5 is rotated counterclockwise.
Fit into the U-shaped groove of each locking part. Then, the hollow bolt 11 may be aligned with the boss portion of the oil cooler 2, and the two may be screwed together.

[0011]

The resin tank of the radiator with a built-in oil cooler of the present invention has a pair of hook-shaped first and second locking portions 6 and 7 for gripping an oil pipe integrally formed on the outer surface of the side wall. The first locking portion 6 is arranged so that its hook-shaped opening side faces the bottom surface side of the tank body 1, and the second locking portion 7 is arranged so that its hook-shaped opening side faces in the opposite direction. The oil pipe 5 can be reliably held by the pair of the first locking portion 6 and the second locking portion 7. Moreover, the opening side of the first locking portion 6 and the second locking portion 7 is
In the injection molding, the male mold and the female mold coincide with the mold dividing direction, so that they can be easily integrally molded.

According to a second aspect of the present invention, the third locking portion 8 is provided.
Is provided so that a part of the outer periphery of the oil pipe 5 is gripped, so that the oil pipe 5 can be gripped more reliably. According to the third aspect of the present invention, since the upper edge side or the lower edge side of the gripping surface having a substantially semicircular cross section of the third locking portion 8 extends outward in a direction perpendicular to the outer surface of the side wall, the oil pipe is provided. 5 can be gripped more reliably.

[Brief description of the drawings]

FIG. 1 is a fragmentary perspective view showing a state before an oil pipe of a resin tank of the present invention is attached.

FIG. 2 is an explanatory view showing a first step of mounting an oil pipe in a resin tank of the present invention.

FIG. 3 is an explanatory view showing a second step.

FIG. 4 is an explanatory view showing the third step.

FIG. 5 is a front view of a main part showing one embodiment of the resin tank of the present invention.

6 is a sectional view taken along the line VI-VI in FIG. 6;

FIG. 7 is a sectional view taken along the arrow VII-VII in FIG.

FIG. 8 is a sectional view taken along the arrow VIII-VIII.

FIG. 9 is a perspective view of a conventional tank.

FIG. 10 is a cross-sectional perspective view of a main part of another conventional tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank main body 2 Oil cooler 3 Connection hole 4 Connection hole 5 Oil pipe 6 First locking part 7 Second locking part 8 Third locking part 9 Oil pipe 10 Tube plate 11 Hollow bolt 12 Boss part 13 Nut 15 O-ring 16 Element 17 Ring member 20 Tube 21 Bottom surface 22 Mounting bracket 23 Grip projection 24 Slope

Claims (3)

[Claims] An elongated oil cooler (2) is built in an elongated box-shaped resin tank body (1) having one opening, and a side wall of the tank body (1) is aligned with an oil inlet / outlet of the oil cooler (2). An oil pipe 5 having a pair of oil pipes having connection holes 3 and 4 penetrating therethrough in the longitudinal direction and having one end connected to one of the connection holes 3.
In the resin tank of the oil cooler built-in radiator guided along the outer surface of the side wall toward the other connection hole 4, near the other connection hole 4, the oil is slightly separated in the longitudinal direction. A pair of hook-shaped first and second locking portions 6 and 7 for grasping the outer surface of the pipe 5 are integrally formed on the outer surface of the side wall, and the first locking portion 6 has a hook-shaped opening side. A resin tank for a radiator with a built-in oil cooler, characterized in that it faces the bottom side of the tank body 1 and the hook-shaped opening side of the second locking portion 7 is arranged in the opposite direction. 2. The third lock for gripping the outer periphery of the oil pipe 5 between the first locking portion 6 and the second locking portion 7 and the one connection hole 3. An oil cooler having a gripping surface having a substantially semicircular cross-section and an opening directed in the same direction as the outward direction of the outer surface of the side wall; Built-in radiator resin tank. 3. The radiator with a built-in oil cooler according to claim 2, wherein an upper edge side or a lower edge side of the gripping surface having a substantially semicircular cross section of the third locking portion 8 extends in an outward direction perpendicular to the outer surface of the side wall. Resin tank.