JP2678666B2 - Radiator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a radiator attached to a water-cooled engine.

A conventional fan is usually provided with a fan, and a fan shroud is provided in order to efficiently pass the air flow by the fan through the core and to protect the fan.
In recent years, this fan shroud is often made of a resin material, and for example, Japanese Utility Model Laid-Open No. 59-67530 discloses a radiator provided with such a resin shroud. In this radiator, the resin shroud has bolts,
It is connected to the radiator body by a fastening element such as a pin and a band member having a spring property. Also, the actual development 58-18
In 9317, the shroud is provided with a mounting protrusion having a tapered protrusion and a cut formed in the tapered protrusion,
By fitting this mounting protrusion into a mounting hole formed on the radiator main body side, the shroud is mounted on the radiator main body, and the mounting protrusion as described above is further provided with a pin insertion hole having a recess at the tip end, It is disclosed that the shroud is attached to the radiator main body by fitting the mounting projection into the mounting hole and then fitting a fixing pin having a projection at the tip into the pin insertion hole.

Further, in the radiator, tanks are attached to the end surface on the cooling liquid inflow side and the end surface on the outflow side, respectively, but these tanks are often made of a resin material.
In the radiator shown in Japanese Utility Model Laid-Open No. 59-131526, such a resin tank is attached to the radiator main body (core) as follows. That is, a flange having a step is formed on the outer periphery of the end face of the resin tank, the packing ring is inserted into the step to fit the tank to the core plate, and the end of the core plate is caulked inside to form the step. The resin tank is attached to the core by connecting the parts to the core plate.

Problems to be solved In the conventional radiator, since the shroud and the tank were separately mounted on the radiator body in this way, many mounting parts were required, and the number of assembly steps was also increased, which increased the cost. did. Especially for the shroud, even if it is attempted to simplify the mounting structure by mounting the shroud by the mounting projection formed on the shroud as in the former method described in Japanese Utility Model Laid-Open No. 189317/58. It is impossible to securely fix the shroud to the radiator main body only with such a mounting projection, and it is inevitable to use both the fixing pin and the pin insertion hole as in the latter method.

Means and Actions for Solving the Problems The present invention has been made in view of such circumstances, and a tank attached to an end surface of a core and a fan shroud are integrally formed of a resin material, and the end surface of the core is formed. Mounting protrusions are provided on the peripheral edge portion of the end plate that covers the mounting plate, and an insertion hole through which the mounting protrusion is inserted is provided at a connection portion between the integrally molded tank and the fan shroud. The fan shroud is attached to the core by caulking the flange portion on the outer periphery of the end surface of the tank to the end plate, and fitting the plug-like piece projecting from the fan shroud into the hole provided in the core.

According to the present invention, since the tank and the fan shroud are integrally formed, they can be assembled to the core at the same time, and the number of assembling steps can be reduced. Since the insertion hole is provided at the connection between the tank and the fan shroud,
By passing a mounting claw formed in the end plate of the core through the insertion hole, the flange of the tank can be caulked to the end plate by the mounting claw to fix the tank to the core. The fan shroud integral with the tank is thus supported by the tank fixed to the core, so that the fan shroud only has to be connected to the core by a very simple means of fitting a plug-like piece into the hole of the core. Is enough.

Further, according to the second aspect of the present invention in which the water hose is integrally formed with the tank, it suffices to connect the water hose directly to the engine, and the work for connecting the separate water hose to the radiator side and the connecting parts are provided. do not need.

Example Hereinafter, the present invention will be described with reference to an illustrated example.

FIG. 1 is an exploded perspective view of a radiator according to the present invention. This radiator comprises a core 1 and a tank / shroud compact 2 as shown. A large number of tubes 4 having fins 3 are arranged in the core 1 in the left-right direction. That is, this radiator is a cross-flow type radiator. Both left and right end surfaces of the core 1 are closed by end plates 5, respectively, and the tube 4 penetrates the end plates 5 and opens to the outside. The end plate 5 has a shallow box shape including a bottom plate portion 5a penetrating the tube 4 and a side wall portion 5b protruding outward at a right angle from the periphery of the bottom plate portion 5a, and the side wall portion 5b.
Mounting claws 6 are provided at appropriate intervals on the edges of the.

The tank / shroud molded body 2 is made of a resin material, and the same tank 8 is integrally connected to both left and right sides of the central fan shroud 7. The fan shroud 7 and the tank 8 have a flexible hinge portion 9 (see FIG. 2).
Are connected to each other by means of which the angle between the fan shroud 7 and the tank 8 is variable.

The tank 8 opens toward the end plate 5 of the core 1,
A flange portion 10 protruding outward is formed along the periphery of the opening. The outer peripheral shape of the flange portion 10 substantially matches the inner peripheral shape of the side wall portion 5b of the end plate 5. Further, the thickness of the flange portion 10 is made larger than the protruding height of the side wall portion 5b from the bottom plate portion 5a. A seal ring 11 is fitted on the end surface of the flange portion 10 facing the end plate 5. In addition, at the connection portion between the tank 8 and the fan shroud 7,
Insertion holes 12 through which the mounting claws 6 can be inserted are provided at positions corresponding to the mounting claws 6 provided on the end plate 5.

When attaching the molded tank / shroud body 2 to the core 1, first, one of the tanks 8 is arranged as follows.
Attach to Tank 8 with mounting claw 6 passing through insertion hole 12
Is brought closer to the end plate 5, the flange portion 10 is fitted inside the side wall portion 5b of the end plate 5, and the end surface having the seal ring 11 is brought into contact with the bottom plate portion 5a of the end plate 5. And the insertion hole 12
If the tip of the mounting claw 6 protruding from the inside is bent inward as shown in FIG. 3 and caulked along the rear surface 10a of the flange portion 10, the other mounting claws 6 are also caulked on the rear surface 10a in the same manner. The tank 8 is completely sealed around the opening by the seal ring 11, and the end plate 5 is firmly attached. During this mounting operation, the fan shroud 7 can freely change the angle with respect to the tank 8 by the hinge portion 9, so that the tank 8 can be mounted very easily.

After the one tank 8 is attached to the core 1 in this manner, the other tank 8 is attached to the other side of the core 1. In this case, the mounting claws 6 that pass through the insertion holes 12 are bent outward, and the mounting claws 6 are inserted while rotating the fan shroud 7 around the hinge portion 9 between the fan shroud 7 and the tank 8 that has been mounted. It is only necessary to pass through the hole 12, and during that time, the angle between the tank 8 and the fan shroud 7 to be mounted can be appropriately changed by the hinge portion 9 therebetween, so that the tank mounting can be easily performed.

Since the hinge portions 9 on both sides are rigid in the vertical direction, the fan shroud 7 is supported by the core 1 via the tank 8 after both tanks 8 are attached to the core 1 as described above. Therefore, the fan shroud 7 does not need to be further fixed to the core 1 by a particularly strong mounting means,
It only has to be connected to the core 1 by simple means.
For this reason, in the present embodiment, plug-like portion pieces 13 projecting toward the core 1 are integrally provided at two upper edge portions of the fan shroud 7. As shown in FIG. 3, the plug-shaped piece 13 is provided with a vertical notch 14,
The notches 14 allow the diameter to be elastically expanded / contracted. Further, a conical bulge 15 is formed at the tip of the plug-shaped piece 13. On the other hand, a bracket 16 is provided on the upper edge of the core 1 at a position corresponding to the plug-shaped piece 13, and a hole 17 is formed in the bracket 16. After both tanks 8 are attached to the core 1 as described above, when the bulging portion 15 at the tip of the plug-shaped piece 13 is applied to the hole 17 and the upper edge of the fan shroud 7 is pressed, the bulging portion By pressing 15 onto the rim of the hole 17, the plug-like piece 13 is reduced in diameter and fitted into the hole 17, and the bulging portion 15 returns to the original diameter at the place protruding from the hole 17 to the opposite side. Stick to hole 17. And the bulge 15 is the hole 17
The fan shroud 7 is connected to the core 1 via the plug-shaped part 13 by engaging with the rim of the plug-shaped part 13 to prevent the plug-shaped part 13 from slipping out.

Thus, according to the present embodiment, the tank 8 and the fan shroud 7 do not need to use screw parts such as bolts, nuts or screws or fastening parts such as bands, or use fixing means such as brazing. Since the tank 8 and the fan shroud 7 are extremely easily fixed to the core 1 and are integrally attached to the core 1, the number of parts is reduced and the number of assembling steps is reduced, thus reducing the cost.

The assembled radiator is connected to a cooling water system of the engine, and the cooling water discharged from the cooling water system enters a tank 8 on the left side in the figure, and then flows into a tank 8 on the right side through a tube 4, Is returned to the cooling water system. For this reason, water hoses 18 and 18 are provided in the left and right tanks 8 and 8, respectively. These water hoses 18 are made of a resin material having a higher flexibility than the resin material forming the tank 8 and the fan shroud 7, and are integrally formed with the tank 8. The tank 8 and the water hose 18 are integrally molded, for example, by first injection-molding the tank / shroud molded body 2 in the primary molding process, and then injecting the water hose 18 integrally into the tank / shroud molded body 2 in the secondary molding process. It can be performed by molding, and this molding technique is widely known as a multicolor / multimaterial injection molding technique.

As described above, in this embodiment, the water hose 18 is added to the tank 8.
Since it is integrally formed, it is only necessary to connect this water hose 18 directly to the engine, saving the trouble of connecting a separate water hose to the radiator, and the parts for connecting the water hose to the radiator. Since it does not, it is possible to further reduce the number of assembly steps and the number of parts.

The example in which the present invention is applied to the cross-flow type radiator having the tanks 8 on the left and right sides of the core 1 has been described above, but the present invention may be applied to the down-flow type radiator having tanks on the upper and lower sides of the core. It is possible.
Further, in the above-described embodiment, both the left and right tanks 8, 8 are formed integrally with the fan shroud 7, but only one tank 8 may be formed integrally with the fan shroud 7, and the scope of the present invention is not limited. Many variations are possible within.

As described above, in the radiator of the present invention, the tank attached to the end surface of the core and the fan shroud are integrally formed of a resin material, and the attachment claw is provided on the peripheral edge portion of the end plate that covers the end surface of the core. A protruding hole is provided at the connecting portion between the integrally molded tank and the fan shroud, and an insertion hole through which the mounting claw is inserted is provided, and the flange part on the outer peripheral surface of the tank is formed by the mounting claw that passes through the insertion hole. Since the fan shroud is attached to the core by caulking it to the end plate and fitting the plug-shaped piece protruding from the fan shroud into the hole provided in the core, the number of parts is reduced and the number of assembly steps is reduced. Is reduced, and thus cost is reduced.

Further, by integrally molding the water hose extending from the tank into the tank, the number of parts and the number of assembling steps can be further reduced.

[Brief description of the drawings]

1 is an exploded perspective view of a radiator according to the present invention, FIG. 2 is a sectional view showing a connecting portion between a tank and a core, and FIG. 3 is a sectional view showing a connecting portion between a fan shroud and a core. 1 ... Core, 2 ... Tank / shroud compact, 3 ...
Fins, 4 ... tube, 5 ... end plate, 6 ... mounting claw,
7-fan shroud, 8-tank, 9-hinge part, 10-flange part, 11-seal ring, 12 ---
Insertion hole, 13 ... plug-like piece, 14 ... notch, 15 ... bulge, 16 ... bracket, 17 ... hole, 18 ... water hose.

Claims (2)

(57) [Claims] 1. A tank attached to an end surface of a core and a fan shroud are integrally formed of a resin material, and mounting claws are projected on a peripheral portion of an end plate covering the end surface of the core.
An insertion hole through which the mounting claw is inserted is provided at a connection portion between the integrally molded tank and the fan shroud, and the flange on the outer peripheral surface of the tank is caulked to the end plate by the mounting claw that passes through the insertion hole. The radiator is characterized in that the fan shroud is attached to the core by fitting a plug-like portion projecting from the fan shroud into a hole provided in the core. 2. The radiator according to claim 1, wherein a water hose extending from the tank is formed integrally with the tank.