JP2000008821A - Foreign matter invasion preventive device of oil cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent foreign matter such as splash from entering from a discharge port in an oil cooler which discharges an air sucked from a side of a vehicle in the longitudinal direction of a vehicle to cool oil. SOLUTION: An foreign matter invasion preventive device is provided with a suction port 3 to suck an air from a side of a vehicle, an oil cooler body 4 to cool oil with the air sucked from the suction port 3 by a fan, a forward discharge port 5 to discharge the air passing through the oil cooler body 4 forward of the vehicle, a rear discharge port 6 to discharge the air passing through the oil cooler body 4 backward of the vehicle, and a forward shielding member 7 to cover the forward discharge port 5 and discharge the air from the forward port 5 while preventing foreign matter from entering.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil cooler for cooling transmission oil for vehicles such as trucks and the like.

[0002]

2. Description of the Related Art Generally, an oil cooler for a truck is fixed to the outside of a side rail of a vehicle, and is provided so that a surface thereof is parallel to a longitudinal direction of the side rail.
Such an oil cooler requires a relatively large surface area in order to maintain the performance of the fan provided. However, if this oil cooler is to be mounted on a small truck, it may not be able to be installed parallel to the side rails due to the layout.

In such a case, by mounting the oil cooler so as to be inclined with respect to the side rail, the projection size of the oil cooler to the side rail is reduced, and air sucked from the side of the vehicle is discharged to the front and rear of the vehicle. You are going to. On the other hand, a technique for preventing foreign substances such as dust, rainwater, and snow from entering the air duct has been disclosed in Japanese Patent Application Laid-Open No. 8-85349.

In this technique, a suction port formed on two side surfaces of a duct cover, a shielding plate for closing one of the suction ports at a swinging end, a sensor for detecting a steering angle of a vehicle, and a sensor for detecting a steering angle of the vehicle. Having a motor that swings the shielding plate based on the steering angle, and closing the suction port in the turning direction of the vehicle,
Prevents foreign matter from entering the air duct.

[0005]

However, in the oil cooler mounted on the above-mentioned light truck, since the exhaust port is provided at the front and rear of the vehicle, snow and splash (such as mud splash) intrude from the exhaust port when the vehicle is running. As a result, the oil adheres to the fan of the oil cooler, the motor for driving the fan, and the like, and may deteriorate the cooling performance. Further, the above-described conventional foreign matter intrusion prevention technology prevents foreign matter from intruding into a suction port of a duct, and cannot be applied to the oil cooler having a discharge port in a vehicle front-rear direction.

Therefore, the present invention can prevent foreign matter such as splash from entering the oil cooler that cools oil by discharging air sucked from the side of the vehicle in the front-rear direction of the vehicle. An object of the present invention is to provide a foreign matter intrusion prevention device for an oil cooler.

[0007]

According to one aspect of the present invention, there is provided a device for preventing foreign matter from entering an oil cooler mounted outside a side rail of a vehicle and cooling transmission oil. An intake port that inhales air from the side of the vehicle, an oil cooler body that cools oil by air sucked by a fan from the intake port, a front exhaust port that exhausts air that has passed through the oil cooler to the front of the vehicle, A rear discharge port for discharging air that has passed through the oil cooler to the rear of the vehicle; and a foreign substance intrusion prevention means for covering the front discharge port and discharging air from the front discharge port while preventing foreign substances from entering. A foreign matter intrusion prevention device for an oil cooler, characterized in that:

According to this configuration, the front discharge port is covered with the foreign matter intrusion prevention means, and the air is discharged to the front of the vehicle while preventing the foreign matter from entering. The invention according to claim 2 is a foreign matter intrusion prevention device for an oil cooler that is mounted outside a side rail of a vehicle and cools transmission oil, wherein a suction port for sucking air from a side of the vehicle and a fan from the suction port. An oil cooler body that cools oil by air sucked in by the air, a front discharge port that discharges air that has passed through the oil cooler to the front of the vehicle, and a rear discharge port that discharges air that has passed through the oil cooler to the rear of the vehicle. A foreign matter intrusion prevention device for an oil cooler, comprising: a foreign matter intrusion prevention means for covering the rear discharge port and discharging air from the rear discharge port while preventing foreign matter from entering.

According to this configuration, the rear discharge port is covered with the foreign matter intrusion prevention means, and the air is discharged to the rear of the vehicle while preventing the foreign matter from entering. The invention according to claim 3 is characterized in that the foreign matter intrusion prevention means is formed so as to protrude at least one of the front of the front discharge port and the rear of the rear discharge port, and a plate-like protector for preventing foreign substance from entering, An inner discharge port that covers the front discharge port or the rear discharge port, and discharges air discharged from these discharge ports to the inside of the vehicle from the protector;
The foreign matter intrusion prevention device for an oil cooler according to claim 1 or 2, further comprising:

According to this structure, the protector shields the front of the vehicle at the front discharge port or the rear of the vehicle at the rear discharge port, and discharges the air to the inside of the vehicle by the inside discharge port to form the front discharge port or the rear discharge port. Air is discharged while preventing foreign matter from entering from the air. The invention according to claim 4 is the apparatus for preventing foreign matter from entering an oil cooler according to claim 3, wherein the inner outlet is covered with a mesh member.

According to this configuration, the foreign matter that cannot be completely shielded by the protector is shielded by the mesh member. The invention according to claim 5 is characterized in that the foreign matter intrusion prevention means opens and closes the front discharge port or the rear discharge port by swinging a louver, and the foreign matter intrusion of the oil cooler according to claim 1 or claim 2. It is a prevention device.

According to this configuration, the front discharge port or the rear discharge port is opened and closed by swinging of the louver. The invention according to claim 6 is characterized in that the louver is closed by its own weight and is opened by the pressure of air from the front discharge port or the rear discharge port. This is a device for preventing foreign matter from entering the oil cooler.

According to this configuration, when the discharged air becomes equal to or more than a predetermined value, the front discharge port or the rear discharge port is opened against the louver's own weight. The invention according to claim 7, wherein the louver is opened when the temperature of the oil reaches a predetermined temperature, the foreign matter intrusion prevention device for an oil cooler according to claim 6, wherein the louver is opened.

According to this configuration, the front discharge port or the rear discharge port is opened and closed based on the detected oil temperature.
The invention according to claim 8 is the foreign matter intrusion prevention device for an oil cooler according to any one of claims 5 to 7, wherein the foreign matter intrusion prevention means is covered with a mesh member. is there.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIG. 1, an oil cooler 1 applied to the present embodiment is fixed to the outside of a side rail (right side rail) 2 of a vehicle, and after introducing outside air to cool, for example, truck transmission oil, It is for discharging air to the outside air, and is mainly composed of an inlet 3, an oil cooler main body 4, a front outlet 5, and a rear outlet 6.

The suction port 3 is covered with a net-like member for preventing foreign matter from being sucked, and opens outward to the vehicle. Then, air is introduced into the oil cooler 1 by rotation of a fan provided in the oil cooler main body 4 described later. The oil cooler main body 4 includes a fan (not shown), and by rotating the fan, air is sucked from the suction port 3 to cool, for example, transmission oil for trucks.

The front discharge port 5 is an air discharge port opened to the front of the vehicle, and discharges air sucked from the suction port 3 and passing through the oil cooler body 4. The front discharge port 5 is formed below the upper end position of the side rail 2. The rear discharge port 6 is an air discharge port opened to the rear of the vehicle, and discharges air that has been sucked from the suction port 3 and passed through the oil cooler body 4, like the front discharge port 5. The rear outlet 6 is also formed below the upper end position of the side rail 2.

With the oil cooler 1 having the above-described structure, air is sucked from the side of the vehicle through the intake port 3 and passed through the oil cooler body 4 to cool the oil, and the oil cooler is cooled by the front discharge port 5 and the rear discharge port 6. The air that has passed through the main body 4 is discharged in the vehicle front-rear direction. Here, in the present embodiment, in order to discharge air while preventing foreign substances from entering the front discharge port 5 and the rear discharge port 6, the front shielding member 7 and the rear shielding member 8 as foreign substance intrusion prevention means (FIG. 3) was provided at each outlet.

First, the front shielding member 7 will be described.
As shown in FIG. 2, the front shielding member 7 has a plate-like protector 7a formed to protrude forward of the front discharge port 5, an inner discharge port 7b opening toward the vehicle inside from the protector 7a, A substrate portion 7c for closing the discharge port 5,
These are configured as an integral part.

As a result, the substrate portion 7c covers the front discharge port 5 so that the air is discharged from the inside discharge port 7b, and the protector 7a extends from the substrate portion 7c, and its tip is close to the side rail 2. Or, because of the contact, the intrusion of snow, splash, etc. from the front of the vehicle is prevented. Further, since the inner discharge port 7b is covered with the net-like member, it is possible to prevent intrusion of foreign matter that could not be removed by the protector 7b.

Next, the rear shielding member 8 will be described.
As shown in FIG. 3, the rear shielding member 8 includes a frame 8a that covers an edge of the rear discharge port 6, and a louver 8b swingably disposed on the frame 8a. The louver 8b
As shown in FIG. 4, a concave portion 9 is provided at the upper portion of the side surface, and swings with respect to the frame 8a by being loosely fitted with a convex member 10 protruding from the frame 8a side, and the rear discharge is performed. The outlet 6 is opened and closed. Such a louver 8b may be one or a plurality of louvers 8b arranged as shown in the figure. In addition, by covering the frame 8a with a net-like member, the effect of preventing foreign matter from entering can be further improved.

With the above structure, the louver 8b is normally closed by its gravity and is opened by the pressure of the discharged air, so that the rear discharge port 6 can be opened and closed with a simple structure. In the closed state, the louver 8b is closed, so that splashes or the like scattered from various directions by the rear wheel of the vehicle can be reliably prevented from entering the rear discharge port 6.

The opening and closing of the louver 8b may be controlled based on the oil temperature. in this case,
For example, as shown in FIG. 5, a signal from a temperature sensor that detects the temperature of oil is sent to a drive motor that opens and closes the louver 8b and an oil cooler fan. To indicate that. As shown in FIG. 6, the opening / closing control of the louver 8b turns on the fan when the oil temperature is equal to or higher than a predetermined temperature (for example, 90 ° C.) in S1 (S2), and turns off the fan when the oil temperature is lower than the predetermined temperature.
(S3), and the louver 8b is closed (S4).

If the fan is not driven despite the fan being turned on in S2, it is determined that the fan has failed (S5), a warning lamp is lit (S6), and the process waits until the restoration is completed in S7, and the restoration is completed. When the reset is turned on,
Returning to S1, control based on the oil temperature is performed again.
On the other hand, when the fan is turned on and the fan is driven in S2,
The louver 8b is opened (S8), and a series of operation control ends.

As described above, by controlling the opening and closing of the louver 8b based on the temperature of the oil, the rear discharge port 6 can be opened only at an appropriate timing, that is, only when the fan is driven. Foreign matter can be prevented from entering the device. As described above, the present embodiment has been described, but the present invention is not limited to this, for example,
The front outlet 5 may be covered with a rear shielding member 8, and the rear outlet 6 may be covered with a front shielding member 7. Further, both the front discharge port 5 and the rear discharge port 6 may be covered with the front shielding member 7 or the rear shielding member 8.

[0026]

According to the first aspect of the present invention, since the front outlet is covered by the foreign matter intrusion preventing means, for example, foreign matter from the front due to running of the vehicle can be prevented. Intrusion can be prevented, and the cooling performance of the oil cooler can be maintained for a long time.

According to the second aspect of the present invention, since the rear exhaust port is covered by the foreign matter intrusion prevention means, foreign matter such as foreign matter wound up by the rear wheel of the vehicle can be prevented from entering from behind, and the oil cooler can be cooled. Performance can be maintained for a long time. According to the third aspect of the invention, the foreign matter is prevented from entering by the protector, and the air is exhausted from the inner discharge port, so that the foreign matter can be effectively prevented from entering with a simple configuration.

According to the fourth aspect of the present invention, the intrusion of foreign matter can be more reliably prevented by the mesh member.
According to the fifth aspect of the invention, since the front discharge port or the rear discharge port is opened and closed by swinging of the louver, it is possible to reliably prevent intrusion of foreign matter that is wound up by the rear wheel of the vehicle and scattered from various directions. be able to.

According to the sixth aspect of the invention, the louver is
Since it is normally closed by its own weight and opened by the pressure at the time of air discharge, it has a simple configuration and can facilitate maintenance. According to the invention according to claim 7, since the louver is opened and closed based on the temperature of the oil,
The front discharge port or the rear discharge port can be opened and closed at an appropriate timing, and it is possible to reliably prevent foreign matter from entering.

According to the eighth aspect of the present invention, the intrusion of foreign matter can be more reliably prevented by the mesh member.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an apparatus for preventing foreign matter from entering an oil cooler according to the present invention.

FIG. 2 is a perspective view showing a front shielding member of the foreign matter intrusion prevention device for the oil cooler according to the present invention.

FIG. 3 is a perspective view showing a rear shield member of the foreign matter intrusion prevention device for the oil cooler according to the present invention.

FIG. 4 is an enlarged perspective view showing a louver of the device for preventing foreign matter from entering an oil cooler according to the present invention.

FIG. 5 is a block diagram showing a foreign matter intrusion prevention device for an oil cooler according to the present invention.

FIG. 6 is a flowchart showing control of a louver of the device for preventing foreign matter from entering an oil cooler according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Oil cooler 2 ... Side rail 3 ... Inlet 4 ... Oil cooler main body 5 ... Front discharge port 6 ... Rear discharge port 7 ... Front shield member 7a ... Protector 7b ... Inner discharge port 8 ... Rear shield member 8b ... Louver

Claims (8)

[Claims] 1. An oil cooler for cooling transmission oil, which is attached to an outside of a side rail of a vehicle, for preventing foreign matter from entering, comprising: a suction port for sucking air from a side of the vehicle; An oil cooler body that cools oil by air, a front discharge port that discharges air that has passed through the oil cooler body to the front of the vehicle, a rear discharge port that discharges air that has passed through the oil cooler body to the rear of the vehicle, A foreign matter intrusion prevention device for an oil cooler, comprising: a foreign matter intrusion prevention means for covering the front discharge port and discharging air from the front discharge port while preventing foreign matter from entering. 2. A device for preventing foreign matter from entering an oil cooler mounted outside a side rail of a vehicle and cooling transmission oil, wherein a suction port for sucking air from a side of the vehicle, and a fan sucking air from the suction port. An oil cooler body that cools oil by air, a front discharge port that discharges air that has passed through the oil cooler body to the front of the vehicle, a rear discharge port that discharges air that has passed through the oil cooler body to the rear of the vehicle, A foreign matter intrusion prevention device for an oil cooler, comprising: a foreign matter intrusion prevention means for covering the rear discharge opening and discharging air from the rear discharge opening while preventing foreign matter from entering. 3. The foreign matter intrusion prevention means is formed so as to protrude at least one of the front of the front discharge port and the rear of the rear discharge port, and is a plate-shaped protector for preventing foreign matter from entering; Or an inner discharge port that covers a rear discharge port and discharges air discharged from the discharge port to the inside of the vehicle from the protector.
Or the foreign matter intrusion prevention device of the oil cooler according to claim 2. 4. An apparatus for preventing foreign matter from entering an oil cooler according to claim 3, wherein said inner discharge port is covered with a mesh member. 5. The foreign matter intrusion prevention device for an oil cooler according to claim 1, wherein the foreign matter intrusion prevention means opens and closes the front discharge port or the rear discharge port by swinging a louver. 6. The louver is closed by its own weight and is opened by the pressure of air from the front discharge port or the rear discharge port.
The foreign matter intrusion prevention device for the oil cooler described in the above. 7. The apparatus according to claim 6, wherein the louver is opened when the temperature of the oil reaches a predetermined temperature. 8. The foreign matter intrusion prevention device for an oil cooler according to claim 5, wherein said foreign matter intrusion prevention means is covered with a mesh member.