JPS6335881Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air cooling device for an automobile disc brake.

[Conventional technology]

Generally, disc brakes of automobiles are installed inside the wheels, and are protected from wind when the automobile is running. As a result, the temperature of the disc brake tends to rise due to frictional heat during use, leading to significant pad wear and poor fade performance.

Therefore, as disclosed in Japanese Utility Model Application Publication No. 55-3073, it has been proposed to provide a ventilation hole in the disk and aim for the cooling effect, but in this case, the disadvantage is that the structure of the disk becomes complicated. There is.

However, as an example of prior art useful for solving this drawback, there is a technique described in Japanese Patent Application Laid-Open No. 47-24022.

[The problem that the idea aims to solve]

However, according to the above-mentioned prior art example, a separate protruding duct is provided in the front part of the vehicle body to take in the cooling air for the disk plate part, and the duct becomes gradually thinner from the front to the rear. In addition, there is a problem in that during rainy weather, rainwater is drawn into the duct together with the cooling air and accumulates therein, preventing the cooling air from being taken into the duct.

[Means to solve the problem]

The present invention solves the above problems and has the following means. That is, the rear end is connected to the dust cover of the disc brake or a fixed member near the disc brake, and the open duct is connected to the air guide passage formed in the side frame with the front end open, so that the air guide passage is A constriction part is provided in front of the communication part of the duct in the passageway to narrow the air guide passage, and a water drain hole is provided in the constriction part, so that when the vehicle runs, water flows through the air guide passage and the duct. The feature is that cooling air is blown onto the disc brake section.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 indicates a side frame which is a strength member of an automobile body.The front end of these frames 1, which faces the front grille 2, is open and is guided into the side frame 1. A wind passage 3 is formed. The air guide passage 3 is connected in front of the partition plate 4 provided in the side frame 2 so as to communicate with a duct 5 forming a part of the air guide passage 3, and is connected to the end of the air guide passage 3, that is, after the duct 5. The end is connected to a dust cover 8 provided on the disc brake 7 of the front wheel 6 and is opened.

The disc brake 7 is a conventionally known disc brake 7 in which a disc 9 fixed to the front wheel 6 side, a pad 10 pressed against the disc 9, and the like are disposed inside the front wheel 6. Also, of side frame 1,
A constriction part 3' is provided in front of the communication part of the duct 5 to narrow the air guide passage 3 rearward thereof, and a drain hole 11 is provided in a part of the lower surface of the part where the constriction part 3' is formed. A water stop plate 12 is provided in contact with the rear part of the water drain hole 11 and protrudes into the air guide passage 3.

The air cooling device of the embodiment configured as described above has the following features:
When the car is running, the front end of the air guide passage 3 is opened in the front grille 2, where the wind pressure on the surface of the car body is strong and there is relatively little dust. The speed of the cooling air is increased by the throttle part 3', and from the rear end of the duct 5 at the end of the air guiding passage 3, it is applied to the disc brake 7, especially the brake 7, in a state similar to forced air blowing.
It is powerfully sprayed onto the parts that are frictionally engaged. Therefore, the disc brake 7 can be effectively cooled, and various parts of the disc brake 7 can be prevented from becoming high temperature due to frictional heat. Also, in the case of rain, the cooling air can be taken into the air guide passage 3. The rainwater
There is a possibility that the water collides with the constriction part 3' and is separated, and falls through the drain hole 11 provided in the constriction part 3' and is removed and does not accumulate in the air guide passage 3.
The intake of cooling air into the air guide passage 3 is not obstructed.

In addition, in the present invention, the rear end of the air guide passage is not limited to the dust cover of the disc brake, but may be connected to or opened to another fixed member of the disc brake or an appropriate fixed member outside the vehicle body. There is no problem as long as it faces a position where the parts of the brake, especially the parts of the brake that tend to become hot, can be effectively cooled.

[Effect of idea]

As explained above, the air cooling system for automobile disc brakes according to the present invention can reduce the high wind pressure that acts on the front grille when the car is running, and utilize the side frame, which is a strength member of the car body, from the front grille. Cooling air is introduced into the air guide passage formed inside the air guide passage, and the speed of the cooling air is increased through the constriction part and blown onto the disc brake part, thereby effectively cooling the disc brake and increasing the temperature of the brake. Since the rise can be suppressed, pad wear can be reduced, fade performance can be improved, vapor lock can be prevented, and semi-metallic pads can also be used, thus reducing cooling during driving. There is no need to provide an air duct to receive the wind, which simplifies the structure.In addition, during rainy weather, rainwater that is taken into the air guide passage along with the cooling air can be separated when it hits the throttle part. Since the cooling air falls through the water drain hole and is removed, there is an effect that the intake of cooling air into the ventilation passage is not obstructed.

[Brief explanation of the drawing]

FIG. 1 is a side explanatory view showing an embodiment of the present invention;
FIG. 2 is a partially sectional plan view of the same side. DESCRIPTION OF SYMBOLS 1... Side frame, 2... Front grill, 3... Air guide passage, 3'... Throttle part, 4... Partition plate, 5... Duct, 6... Front wheel, 7... Disc brake, 8... ...Dust cover, 9...Disk, 10...Putt, 11...Drain hole, 12...
Water stop plate.

Claims (1)

[Scope of utility model registration request] The front end is opened and the rear end is connected to the dust cover of the disc brake or a fixed member near the disc brake to the air guide passage formed in the side frame, and the opened duct is connected so as to communicate.
A constriction part for narrowing the air guide passage is provided in front of the communication part of the duct in the air guide passage, and
An air cooling device for a disc brake for an automobile, characterized in that a water drain hole is provided in the constriction part, and cooling air is blown onto the disc brake part through an air guide passage and a duct as the car runs.