KR19980031869U - Heat dissipation structure of wheel brake - Google Patents

Abstract

The present invention relates to a heat dissipation structure of a wheel brake, and more particularly, in a heat dissipation structure of a wheel brake, a tire that absorbs an impact on a road surface and prevents slippage with a road surface is formed, and a rim to which the tire is fitted is formed. The wheel is formed integrally with the disk mounted on the hub, the brake drum is mounted inside the disk to rotate at high speed with the wheel, and generates a braking force by the friction of the brake shoe, the brake drum is installed outside the brake drum Dust cover to prevent foreign matter from entering the inside, at least one or more attached to a predetermined position of the outer surface of the dust cover is provided with a guide member for inducing air flow between the disk and the brake drum to dissipate heat due to braking It provides a heat radiation structure of the wheel brake, characterized in that.

Description

Heat dissipation structure of wheel brake

The present invention relates to a wheel brake heat dissipation structure, and more particularly, to a wheel brake heat dissipation structure to induce air to the wheel brake to decelerate and stop the vehicle while driving to dissipate frictional heat due to braking.

BACKGROUND ART In general, a brake device used in a vehicle uses a friction type brake that brakes by converting kinetic energy of a vehicle into thermal energy and dissipating it into air using frictional force.

1 is a schematic view showing a tire and a wheel brake according to the related art, in which a tire 10 which absorbs an impact on a road surface while driving the vehicle and prevents slippage with the road surface, and the total weight of the vehicle together with the tire 10 And a rim 21 to which the tire 10 is fitted, while supporting and supporting the wheels, the wheels 20 formed integrally with the disks 22 mounted on the hub (not shown), and the disks 22 described above. The brake drum 30 is mounted inside and rotates at a high speed with the wheel 20 and generates a braking force by receiving a friction force of a brake shoe (not shown), and the brake drum is installed outside the brake drum 30. (30) It is composed of a dust cover 40 to prevent foreign matter from entering.

In the conventional wheel brake configured as described above, when the driver depresses the brake pedal (not shown) when the vehicle is decelerated and stopped while driving, the pneumatic or hydraulic pressure is transmitted to the brake system and the brake shoe is extended by the piston in the cylinder (not shown). In close contact with the drum 30, the brake drum 30 receives a friction force of the brake shoe to generate a braking force. Therefore, the braking force generated in the brake drum 30 is transmitted to the wheel 20 and the tire 10, and at this time, the tire 10 causes friction with the road surface to decelerate or stop the vehicle at a constant speed.

However, in the conventional wheel brake, high temperature heat is generated in the friction surface by braking by using the friction force between the brake drum 30 and the brake shoe, and this heat causes fading to temporarily reduce the effect of the brake. There was a problem causing the phenomenon.

In particular, the gap is reduced due to thermal expansion of the brake drum 30 and the brake shoe, so that the brake shoe is stuck to the brake drum 30, thereby reducing the life of the brake device and interfering with the rotation of the wheel 20 to power the power transmission system. There was a problem causing loss.

Accordingly, an object of the present invention is to provide a heat dissipation structure of a wheel brake that can effectively cool the heat generated from the wheel brake by excessive braking or repeated braking according to the deceleration or stop of the vehicle while driving to improve the effect of the brake. Is in.

1 is a partial cross-sectional view schematically showing a tire and wheel brake of the prior art;

Figure 2 is a partial cross-sectional view showing a heat radiation structure of the wheel brake according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: tire

20: wheel

21: tranny

22: disc

30: brake drum

40: dust cover

100: guide member

101: outlet

An object of the present invention described above, in the heat radiation structure of the wheel brake, a tire that absorbs the impact on the road surface, prevents slipping with the road surface, a rim to which the tire is fitted is formed, the disk mounted on the hub is integral A wheel formed in the disk, rotated at high speed together with the wheel, and configured to generate a braking force by receiving a friction force of the brake shoe, and installed outside the brake drum to prevent foreign substances from entering the brake drum. A dust cover, and a guide member attached to at least one predetermined position of an outer circumferential surface of the dust cover to guide air flow between the disc and the brake drum to dissipate heat due to braking. By providing a heat dissipation structure.

According to a preferred feature of the present invention, it is characterized in that the discharge port is formed at a predetermined position of the disk to discharge the air introduced between the disk and the brake drum to improve the heat dissipation effect.

Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings.

2 is a partial cross-sectional view showing a heat radiation structure of a wheel brake according to an embodiment of the present invention.

As shown in the figure, the tire 10 absorbs the impact on the road surface while the vehicle is running and prevents slippage with the road surface, and the tire 10 is shared with and supports the entire weight of the car. A rim 21 into which 10 is fitted is formed, and a wheel 20 in which a disk 22 mounted on a hub (not shown) is integrally formed, and the wheel 20 is mounted inside the aforementioned disk 22. And a brake drum 30 which rotates at a high speed and generates a braking force by receiving a friction force of a brake shoe (not shown), and is installed outside the brake drum 30 to introduce foreign substances into the brake drum 30. The structure of the dust cover 40 or the like which prevents it from becoming the same is the same as the conventional structure shown in FIG. 1, and the same name and the same reference numerals are given thereto, and detailed overlapping description is omitted.

Therefore, according to a preferred embodiment of the present invention, at least one or more attached to a predetermined position of the outer peripheral surface of the dust cover 40 described above to induce air between the disk 22 and the brake drum 30 to dissipate heat due to braking The guide member 100 is provided, and the discharge port 101 is formed at a predetermined position of the disk 22 and discharges air introduced between the disk 22 and the brake drum 30 to improve the heat dissipation effect. Is formed.

Hereinafter, the operation of the present embodiment configured as described above will be described.

If the driver presses the brake pedal (not shown) when the vehicle is decelerated and stopped while driving, the pneumatic or hydraulic pressure is transmitted to the brake system, and the brake shoe is extended by the piston in the cylinder (not shown) and the brake shoe 30 comes into close contact with the brake drum 30. The drum 30 receives the frictional force of the brake shoe to generate a braking force. Therefore, the braking force generated in the brake drum 30 is transmitted to the wheel 20 and the tire 10, and at this time, the tire 10 causes friction with the road surface to decelerate or stop the vehicle at a constant speed.

On the other hand, heat generated by friction with the brake shoe and the brake drum 30 due to frequent braking of the brake during driving causes the air flow to the wheel brake by the guide member 100 to radiate heat. That is, the air guided by the guide member 100 mounted on the dust cover 40 flows in between the disk 22 and the brake drum 30 to cool the brake drum 30 by a cooling action by contact with the heat dissipation surface. It is to dissipate heat generated from wheel brakes. In addition, as the air introduced by the discharge port 101 formed in the disk 22 is quickly discharged, the air flows smoothly on the heat dissipation surface, thereby greatly increasing the heat dissipation effect.

As described above, the heat dissipation structure of the wheel brake according to the present invention provides a guide member for inducing the flow of air in the dust cover that prevents the inflow of foreign matters in the brake drum, thereby efficiently dissipating heat generated in the wheel brake. By cooling, the braking power of the vehicle is improved, and thus there is an effect that can prevent accidents and the like in advance.

Claims (2)

In the heat radiation structure of the wheel brake: A tire that absorbs shock from the road surface and prevents slippage with the road surface; A rim on which the tire is fitted, the wheel being integrally formed with a disk mounted to the hub; A brake drum mounted inside the disc to rotate at high speed together with the wheel and generating a braking force by receiving a friction force of the brake shoe; A dust cover installed outside the brake drum to prevent foreign substances from entering the brake drum; And And a guide member attached to at least one predetermined position of an outer circumferential surface of the dust cover to guide the flow of air between the disc and the brake drum to dissipate heat due to braking. The method according to claim 1, The heat dissipation structure of the wheel brake is formed in a predetermined position of the disk is formed to discharge the air flowing between the disk and the brake drum to improve the heat dissipation effect.