JPH08132893A - Aluminum radiator fitting structure for large bus - Google Patents

Abstract

PURPOSE: To provide such fitting structure as not to generate thermal distortion to an aluminum core without using a side support. CONSTITUTION: An upper tank 22 made of resin is provided with upper fixing pins 28 protruding to the front face of an aluminum radiator 21, and a lower tank 23 made of resin is provided with lower fixing pins 32 protruding to the lower face 31 of the aluminum radiator 21. The aluminum radiator 21 is fitted to the floor member 40 or the like of a cabin by the upper fixing pins 28 through upper rubber 33 and fitted to a floor member 42 or the like by the lower fixing pins 32 through lower rubber 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for mounting an aluminum radiator on a large bus.

[0002]

2. Description of the Related Art In an automobile engine, an engine which has generated heat due to combustion of fuel is cooled with cooling water, and the cooling water receives heat due to the cooling and its temperature rises.
Then, the cooling water whose temperature has risen is cooled by a radiator which is a heat exchanger. Here, as shown in FIG. 3, a general radiator 1 is of a closed pressurizing type, and is composed of three parts of an upper tank 2, a lower tank 3, and a core 4 connecting the upper tank 2 and the lower tank 3. There is.

The upper tank 2 is provided with a radiator cap, an overflow pipe, a cooling water inlet pipe, etc. (all are not shown), and the lower tank 3 is provided with a drain cock and cooling water for discharging the cooling water. An outlet pipe (both not shown) is provided. The core 4 is composed of a large number of tubes (not shown) and heat radiation fins 5.

The high temperature cooling water flowing into the upper tank 2 through the inlet pipe is dissipated by the heat dissipating fins 5 when passing through the core 3 to lower the temperature. Then, the low-temperature cooling water flows out from the lower tank 3 through the outlet pipe. By the way, when mounting the radiator 1 on a large-sized bus, a mounting structure as described below is adopted.

Conventionally, since the core 3 is made of a copper tube, the strength of the core is small, and since the upper tank 2 and the lower tank 3 are made of brass, it is difficult to provide a mounting pin, etc. The lower tank 3 and the lower tank 3 are connected by an iron side support 6, and on the side of the lower tank 3, a bracket 7 for vehicle fixing is attached to the side support 6 by welding or the like, and is attached to a floor member 9 or the like via a rubber 8. . Also the upper tank 2
On the side, since the upper tank 2 is made of brass, it is difficult to directly project the mounting pins and the like from the upper tank 2 in terms of cost.
Attach the bracket 10 for vehicle fixation using the upper end of
It was attached to the floor member 11 of the passenger compartment via the rubber 11.

[0006]

However, the core 3
If the tube is made of copper, the specific gravity of copper is large and the total weight of the core is large, and the weight of the entire radiator is heavy, and there is a problem that the cost is increased. Therefore, recently, a radiator in which the core 3 is made of aluminum has been used.

Here, in a radiator having a core made of an aluminum tube, the specific gravity is sufficiently smaller than that of copper, so that the total weight of the core is sufficiently small, and the weight of the entire radiator is reduced. It is possible to reduce the manufacturing cost. However, since aluminum has a larger coefficient of thermal expansion than copper, when the high-temperature cooling water radiates heat through the aluminum core, the amount of thermal expansion of the aluminum core becomes large, so that the copper core is When the upper tank and the lower tank are connected by the side support 6 like the used radiator, there is no escape of the thermal expansion amount, so that the aluminum core is thermally distorted, and the aluminum core may be cracked or the like. It is not possible to use a mounting structure that uses side supports.

The present invention has been made in view of the above-mentioned circumstances, and when mounting a radiator whose core is made of aluminum to a large-sized bus, it is not the mounting structure using a side support which has been used conventionally, and the core made of aluminum is used. It is an object of the present invention to provide a mounting structure that does not cause heat distortion in the.

[0009]

For this reason, according to the first aspect of the invention, an aluminum radiator including an upper tank, a lower tank, and an aluminum core connecting the upper tank and the lower tank is mounted on a large bus. Aluminum radiator mounting structure, the upper tank and the lower tank are made of resin, the upper tank is provided with an upper fixing pin projecting to the front surface or the rear surface of the radiator, and the lower tank is provided with a lower fixing pin projecting to the lower surface of the radiator. The aluminum radiator is attached to the large fixing bus via elastic members on the upper fixing pin and the lower fixing pin.

[0010]

According to the structure of the first aspect of the present invention, since the upper tank and the lower tank are made of resin, it is possible to easily form the fixing pins on the upper tank and the lower tank. Then, the upper tank is attached to a large bus via an elastic member to an upper fixing pin protruding to the front surface or the rear surface of the radiator provided in the upper tank, and the lower tank is fixed to the lower surface of the radiator provided to the lower tank so as to project downward. It is attached to the large-sized bus via the elastic member to the pin for use.

That is, since the aluminum radiator is attached to the large-sized bus by the upper tank and the lower tank, the aluminum radiator is surely attached to the large-sized bus in the vicinity of both ends, and the mounting structure has a strong mounting rigidity. Become. In addition, the upper fixing pin projects to the front or rear surface of the radiator, and the lower fixing pin projects to the lower surface of the radiator.The protruding directions of both pins are different, and further elastic members are attached to the upper fixing pin and the lower fixing pin. Since the aluminum radiator is attached to the large-sized bus through the radiator, even when a large amount of thermal expansion occurs in the aluminum core when the high-temperature cooling water passes through the aluminum core to radiate heat, the radiator can move forward or backward. The amount of thermal expansion can be released in the vertical direction of the radiator, and thermal distortion of the aluminum core can be prevented.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 and 2 show an embodiment relating to the structure when the aluminum radiator according to claim 1 of the present invention is attached to a large-sized bus. By the way, when mounting the radiator on a large bus, the large bus does not have side rails,
It is necessary to fix the radiator to the large bath up and down.

The aluminum radiator 21 is of a closed pressurizing type and is composed of a resin upper tank 22, a resin lower tank 23, and an aluminum core 24 connecting the resin upper tank 22 and the resin lower tank 23. ing.
The resin upper tank 22 is provided with a radiator cap, an overflow pipe, a cooling water inlet pipe, etc. (all are not shown), and the resin lower tank 23 is also provided.
A drain cock for discharging the cooling water and an outlet pipe for the cooling water (both not shown) are provided in the.

The aluminum core 24 is composed of a large number of tubes (not shown) and heat radiation fins 25. Then, the high-temperature cooling water that has flowed into the resin upper tank 22 through the inlet pipe is radiated by the radiation fins 25 when passing through the aluminum core 23, and the temperature can be lowered. Then, the low-temperature cooling water flows out of the resin lower tank 23 through the outlet pipe.

As a structure according to the present invention, the resin upper tank 22 is provided with an upper fixing pin 28 projecting to the front surface 27 of the aluminum radiator 21 and an upper fixing pin 30 projecting to the rear surface 29 thereof, and the resin lower tank The lower fixing pin 32 protruding from the lower surface 31 of the aluminum radiator 21 is provided on the 23. Further, the aluminum radiator 21 is attached to the upper fixing pin 28 via the upper rubber 33 to the floor member 40 or the like of the vehicle interior, and the lower fixing pin 32 is attached to the floor member 42 or the like via the lower rubber 34. And

Next, the operation of this embodiment will be described. According to the configuration of this embodiment, the upper tank 22 and the lower tank 23
Since the tank is made of resin, it is possible to easily form the fixing pins on the resin upper tank 22 and the resin lower tank 23. Then, the resin upper tank 22 is attached to the floor member 40 or the like of the passenger compartment via the upper rubber 33 to the upper fixing pin 28 provided in the resin upper tank 22, and the resin lower tank 23 is provided in the resin lower tank 23. The lower fixing pin 32 is attached to the floor member 42 and the like via the lower rubber 34.

That is, since the aluminum radiator 21 is attached to the large bus by the resin upper tank 22 and the resin lower tank 23, the aluminum radiator 21 is surely attached to the large bus in the vicinity of both ends, and the aluminum radiator 21 is firmly attached. The mounting structure has excellent mounting rigidity. Further, the upper fixing pin 28 projects from the front surface 27 of the aluminum radiator 21, and the lower fixing pin 32 projects from the lower surface 31 of the aluminum radiator 21, and the projecting directions of both pins 28 and 32 are different. 28 and lower fixing pin 32 have upper rubber
Since the aluminum radiator 21 is attached to the large bus via the 33 and the lower rubber 34, when the high temperature cooling water passes through the aluminum core 24 and radiates heat, the aluminum core 24
Even if a large amount of thermal expansion occurs, the amount of thermal expansion can be released both in the front-back direction of the radiator and in the vertical direction of the radiator, and thermal distortion of the aluminum core 24 can be prevented.

That is, in this embodiment, when the aluminum radiator 21 having the aluminum core 24 is mounted on a large-sized bus, it can be mounted without using a side support, and high-temperature cooling water passes through the aluminum core 24. Even if the aluminum core 24 expands due to heat dissipation, the thermal expansion is escaped by the upper rubber 33 and the lower rubber 34, and the aluminum core 24
Since the aluminum core 24 can be prevented from being cracked and the like due to no thermal distortion, the life of the aluminum radiator 21 can be extended.

Since it is the aluminum radiator 21, it goes without saying that the total weight of the radiator is reduced and the manufacturing cost is reduced.

[0020]

According to the first aspect of the present invention, the upper tank and the lower tank are resin tanks, the upper tank is provided with an upper fixing pin projecting to the front surface or the rear surface of the radiator, and the lower tank is projecting to the lower surface of the radiator. Since the fixing pin is provided and the aluminum radiator is attached to the upper fixing pin and the lower fixing pin via the elastic member to the large-sized bus, the aluminum radiator can be made large without using the side support as is conventionally done. Since it can be attached to the bus, thermal distortion does not occur in the aluminum core and it is possible to prevent cracks etc. from occurring in the aluminum core, so it is possible to extend the life of the aluminum radiator. In addition, there is an effect that the total weight can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing a mounting structure of an aluminum radiator for a large bus according to an embodiment of the present invention.

FIG. 2 is a side view according to the above embodiment.

FIG. 3 is a front view showing a conventional radiator mounting structure.

[Explanation of symbols]

 21 Aluminum radiator 22 Resin upper tank 23 Resin lower tank 24 Aluminum core 28 Upper fixing pin 30 Upper fixing pin 32 Lower fixing pin 33 Upper rubber 34 Lower rubber 40 Vehicle floor member 42 Floor member

Claims (1)

[Claims] 1. An aluminum radiator mounting structure for mounting an aluminum radiator including an upper tank, a lower tank, and an aluminum core connecting the Abba tank and the lower tank to a large bus, wherein the upper tank and the lower tank are made of resin. As a tank, the upper tank is provided with an upper fixing pin projecting to the front surface or the rear surface of the radiator, the lower tank is provided with a lower fixing pin projecting to the lower surface of the radiator, and the upper fixing pin and the lower fixing pin are provided with elastic members. An aluminum radiator mounting structure for large buses, characterized in that an aluminum radiator is mounted to the large bus via the above.