JP2000130163A - Filler neck structure of radiator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a process for manufacturing filler neck parts in a metallic tank and to obtain a filler neck structure with high reliability in the assembling by integrally forming a filler neck part on a synthetic resin fan shroud and fitting this filler neck part into a through hole of the tank via a sealing member. SOLUTION: In a radiator, a pair of upper and lower metallic tanks 2 are arranged and a core 1 is interposed between these tanks 2. In this case, a tip of a bottom part 14 of a fan shroud 3 is integrally extended so as to be matched with outer peripheries of tank main bodies 2a and a filler neck part 5 is formed at this upper end. The filler neck part 5 is formed into a cylindrical shape with step and an O-ring is fitted as a sealing member 7 into an O-ring fitting groove formed on an outer periphery of a fitting part 5b which is projectingly provided on this lower surface side. Further, through holes 4 are formed at upper ends of the tanks 2 and boss parts 9 are mounted on these through holes 4. The fitting part 5b is fitted into the boss parts 9 so that the sealing member 7 may be press-fixed and the filler neck part 5 and the tanks 2 are tightened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply filler neck structure provided at the upper end of a metal tank made of aluminum or the like.

[0002]

2. Description of the Related Art A radiator for cooling engine cooling water, which uses a metal plate such as aluminum for a tank, has a through hole formed at an upper end thereof, and a press-formed product of the metal plate is formed in the through hole. The filler neck was inserted and the insertion part was brazed and fixed. The shape of the filler neck is such that a center hole is formed at the center of the bottom of the pot and the edge of the center hole is burred outward.
An annular protrusion serving as a valve seat of the pressure valve is formed at the edge of the center hole. Further, an annular flange portion having a U-shaped cross section was formed at the upper opening edge of the filler neck, and a cam surface matching the cap was formed on the outer peripheral edge thereof. Further, a pipe for communicating with the surge tank is protrudingly fixed to a side surface of the filler neck. Then, the lower end of such a filler neck was fitted into the through hole of the tank, and the edge of the fitted portion was caulked, and then the neck of the filler neck and the through hole were brazed and fixed in a liquid-tight manner. .

[0003]

The filler neck structure of a radiator in a metal tank has a drawback that it requires a number of steps to form the filler neck and is extremely troublesome. Furthermore, a crimping step is required for the brazing, and as a result, the manufacturing cost has to be increased.
Accordingly, an object of the present invention is to provide a radiator filler neck structure which can be easily manufactured and assembled at a low cost in a radiator having such a metal tank.

[0004]

According to the present invention, there is provided a core 1 comprising a plurality of fins and tubes.
A radiator including a tank 2 provided at one end of the core 1 and having ends of respective tubes fixedly penetrated in a liquid-tight manner, and a synthetic resin fan shroud 3 disposed opposite to a plane of the core 1. , The tank 2 is made of a metal plate, is fitted into the through-hole 4 opened on the outer surface thereof in alignment with the through-hole 4, and is integrally provided with the peripheral edge of the fan shroud 3 to protrude therefrom. Filler neck portion 5 for water supply in which a cap with a pressure valve is removably fitted to upper end opening 6, filler neck portion 5 and through hole 4
And a seal member 7 interposed in the fitting portion of the radiator.
ADVANTAGE OF THE INVENTION According to this invention, the conventional many processes for manufacturing a filler neck part in a metal tank are omitted, and a filler neck structure with high reliability can also be provided in assembly.

According to a second aspect of the present invention, in the first aspect, the through hole 4 is formed on the upper surface of the tank 2 and a boss portion 9 is provided at a hole edge of the through hole 4 or the hole edge is provided. A small cylindrical portion 8 is formed integrally with the tank 2, and a cylindrical fitting portion 5 b is formed on the inner side of the shroud of the filler neck portion 5, and the fitting portion 5 b is formed on the boss portion 9 or the small cylindrical portion 8. Is a filler neck structure of a radiator fitted in a liquid-tight manner via an O-ring as a seal member 7. According to the present invention, the reliability of the seal portion is high. According to a third aspect of the present invention, in the first aspect, the through hole 4 is formed on a side surface of the tank 2 parallel to the plane of the core 1, and a small cylindrical portion is formed on the inner side of the hole edge of the through hole 4. 8 is integrally formed, and a cylindrical fitting portion 5b is formed on the inner surface side of the shroud of the filler neck portion 5. The fitting portion 5b is attached to the small cylindrical portion 8 via an O-ring which is a sealing member 7. It is a filler neck structure of a radiator fitted in a liquid-tight manner. According to the present invention, it is possible to provide a filler neck structure having a small number of parts, easy assembly, and high mass productivity.

[0006]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a main part of a filler neck of a radiator of the present invention, and FIG.
FIG. FIG. 3 is a partially broken side view showing the assembly order of the filler neck. This radiator is for cooling engine cooling water, and a pair of metal tanks 2 are arranged vertically and a core 1 is provided between them. The core 1 is composed of a number of fins and tubes (not shown), and the ends of the tubes are liquid-tightly fixed through the tube insertion holes 17 (FIGS. 5 and 7) of the tank 2. Then, facing the plane of the core 1 (FIG. 1),
A fan shroud 3 made of synthetic resin is arranged. In the fan shroud 3, a motor holding portion 10 is disposed at the center of a circular bell mouth portion 13, and a space between them is integrally connected by a stay 15. The hem 14 of the bellmouth 13 is
It is fastened and fixed to the tank 2 via a fastener (not shown).

The tank 2 of this example has a tank body 2a formed in a tubular shape having a rectangular cross section, and an end cover 2 for closing both ends thereof.
b, an entrance / exit pipe protruding from one side of the tank body 2a
Consists of 16. A tip of a skirt portion 14 of the fan shland 3 is integrally extended so as to be aligned with an outer periphery of the tank body 2a, and a filler neck portion 5 is formed at an upper end thereof. The filler neck portion 5 is formed in a stepped cylindrical shape as shown in FIG. 2, and an O-ring fitting groove is formed on the outer periphery of a fitting portion 5b protruding from the lower surface side thereof, and a seal member 7 is formed there.
An O-ring is fitted. In addition, a through hole 4 is formed at the upper end of the tank 2, and a boss 9 is attached thereto. Then, the fitting portion 5b is fitted into the boss portion 9 so that the seal member 7 is pressed. Then, the vicinity of the filler neck portion 5 of the fan shroud 3 and the tank 2 are fixed via a fastener (not shown).

FIG. 4 shows another embodiment of the present invention, and FIG. 5 is a schematic sectional view taken along line VV. FIG. 6 is an explanatory view of the assembly, and FIG. 7 is a perspective view of a main part of the tank body 2a. In this example, as shown in FIGS. 5 to 7, a through hole 4 is formed on the side surface of the tank main body 2a, and a hole edge of the through hole 4 is burred on the inner surface side to form a small cylindrical portion 8 there. Have been. The fitting portion 5b of the filler neck portion 5 is fitted to the fan shroud 3 so as to match the through hole 4.
The fluid passage of the filler neck portion 5 is bent in an L-shape. Then, it is fitted to the small cylindrical portion 8 of the tank body 2a via a seal member 7 made of an O-ring fitted to the outer periphery of the fitting portion 5b.

[0009]

According to the first aspect of the present invention, a filler neck portion 5 is formed integrally with a synthetic resin fan shroud 3 and fitted into a through hole 4 of a tank 2 via a seal member 7. Therefore, a number of conventional processes for manufacturing a filler neck part in a metal tank can be omitted, and a filler neck structure with high reliability can be provided even in the assembly thereof. According to the second aspect of the present invention, a through-hole 4 is provided on the upper surface of the tank 2, a boss 9 or a small cylindrical portion 8 is formed therein, and the fitting portion 5 b of the filler neck 5 is interposed with the seal member 7. And is fitted into the through hole 4 in a liquid-tight manner. Therefore, the reliability of the seal portion is high.
According to the third aspect of the present invention, the through hole 4 is formed on the side surface of the tank 2 parallel to the plane of the core 1, and the small cylinder portion 8 integrally projects at the hole edge of the through hole 4 of the tank 2 toward the inner surface. Since the fitting portion 5b of the filler neck portion 5 is fitted into the small cylinder portion 8 in a liquid-tight manner via the seal member 7, the number of parts is small, the assembly is easy, and the mass production is easy. Neck structure can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a filler neck of a radiator of the present invention.

FIG. 2 is a schematic sectional view taken along the line II-II of FIG.

FIG. 3 is a partially cutaway side view showing the order of assembling the filler neck of the radiator of the present invention.

FIG. 4 is a perspective view of a main part showing another embodiment of the radiator filler neck of the present invention.

FIG. 5 is a schematic cross-sectional view taken along line VV of FIG.

FIG. 6 is an explanatory view of assembling a filler neck of the radiator.

FIG. 7 is a perspective view of a main part of a tank main body 2a of the tank 2 of the radiator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core 2 Tank 2a Tank main body 2b End cover 3 Fan shroud 4 Through hole 5 Filler neck portion 5b Fitting portion 6 Opening 7 Seal member 8 Small cylinder portion 9 Boss portion 10 Motor holding portion 12 Fan 13 Bell mouth portion 14 Hem portion 15 Stay 16 Door pipe 17 Tube insertion hole

Claims (3)

[Claims] 1. A core 1 comprising a large number of fins and tubes, a tank 2 provided at one end of the core 1 and having an end of each tube fixed in a liquid-tight manner.
A radiator comprising a synthetic resin fan shroud 3 disposed opposite to the plane of the above, wherein the tank 2 is made of a metal plate, and a through hole 4 opened on the outer surface thereof, and the tank 2 is aligned with the through hole 4. A water supply filler neck portion 5 which is integrally protruded from a peripheral edge portion of the fan shroud 3 and in which a cap with a pressure valve is removably fitted to an upper end opening 6 thereof; A filler neck structure for a radiator, comprising: a seal member 7 interposed between a fitting portion 5 and the through hole 4. 2. The tank according to claim 1, wherein the through-hole is formed on an upper surface of the tank, and a boss portion is provided at an edge of the through-hole, or a small cylinder portion is provided at an edge of the hole. 2, a cylindrical fitting portion 5b is formed on the inner surface side of the shroud of the filler neck portion 5, and the fitting portion 5b is a seal member 7 on the boss portion 9 or the small cylindrical portion 8. Filler neck structure of a radiator fitted liquid-tightly through a ring. 3. The through hole 4 according to claim 1, wherein the through hole 4 is formed in a side surface of the tank 2 parallel to the plane of the core 1, and a small cylindrical portion 8 is formed on the inner side of the hole edge of the through hole 4.
Are formed integrally, and a cylindrical fitting portion 5b is formed on the inner surface side of the shroud of the filler neck portion 5, and the fitting portion 5b is formed.
Is a filler neck structure of a radiator fitted in a small cylinder portion 8 in a liquid-tight manner via an O-ring serving as a sealing member 7.