KR20070023155A - Device of Generating Heat of Brake Disc for an Automobile - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device of a brake disk for a vehicle that generates a braking force when the brake pad is in close contact with a vehicle, so that heat generated during braking by the brake pad can be quickly dissipated to the outside. It is.

To this end, in a brake disc configured to radially install the ribs 7 between the discs 6 of a disc shape so that the heat dissipation grooves 8 are formed between the ribs, the insertion grooves 9 are formed in the ribs 7. ) Is formed by inserting a heat absorbing member (10) causing a phase change from solid to liquid at a temperature of 100-250 ℃ in the insertion groove.

Description

Device of Generating Heat of Brake Disc for an Automobile}

1 is a perspective view of a state equipped with a general brake disc

Figure 2 is a perspective view showing a part of the conventional brake disk cut away

Figure 3 is a perspective view showing a part of the brake disk of the present invention cut away

Explanation of symbols for the main parts of the drawings

5: brake disc 6: disc

7: rib 8: heat dissipation groove

9: insertion groove 10: heat absorbing member

11: ring

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake disk for an automobile that generates a braking force as the brake pad is in close contact with a vehicle while driving. More specifically, the present invention provides a quick heat dissipation of heat generated during braking by the brake pad to the outside. It relates to a heating device of a brake disc for automobiles.

In general, a brake that generates a braking force when driving a vehicle is roughly classified into a drum brake and a disk brake.

The drum brake refers to a method of operating a braking force to the drum by expanding a half moon-shaped brake shoe installed inside the brake drum by hydraulic pressure applied to the wheel cylinder, and the disc brake is a circle that rotates integrally with the wheel. It refers to a method of generating braking force by applying a force on both sides of a brake pad having friction material attached to a plate-shaped disk.

1 is a perspective view of a state in which a general brake disc is mounted, in which a piston 3 is installed in a master cylinder 2 installed to communicate with an oil supply passage 1, and a brake pad 4 is provided in the piston 3. It is attached to the piston so as to move forward and backward. Between the brake pads 4, brake discs 5 that rotate together with the rotation of the wheels are located.

Therefore, when the driver presses the brake pedal (not shown) while the brake disc 5 rotates together with the wheel while driving, hydraulic pressure is applied to the master cylinder 2 to fix the brake pad 4 to the piston 3. Is moved toward the brake disc 5, so that friction occurs between the brake pad 4 and the brake disc 5, and thus a braking force is generated.

The brake disk 5 serving as described above is usually cast in a special cast iron and coupled to a wheel hub. The conventional brake disk has a structure as shown in FIG. 2.

That is, the plurality of ribs 7 are arranged radially between the disks 6 having two discs, and the heat dissipation grooves 8 are formed to dissipate heat generated during braking to the outside.

Therefore, if the driver presses the brake pedal for braking while driving, the brake pad 4 is in contact with the disk 6 of the brake disk 5, and thus a braking force is generated. The brake disc naturally cools as it escapes through 8).

However, the conventional brake discs having such a structure have a high temperature between them due to friction between the brake pads and the brake discs when the brake pedal is continuously pressed in the course of driving at high speeds or downhill hills in a season of high temperature, such as in summer. Heat is generated, and there is a limit to rapid heat dissipation through heat dissipation grooves formed between the disks, so there is a high possibility of vapor lock or fade occurring. The fatal problem is not working.

In addition, as the temperature rises and cools within a short time, a change in the material of the disk made of cast iron may cause vibration and noise, as well as the durability of the brake disk.

The present invention has been made to solve such a conventional problem, the brake disk by improving the structure of the brake disk absorbs the heat of the high temperature while generating a phase change when the heat is generated in the disk in accordance with repeated braking brake disk The purpose is to allow the temperature of the to be lowered.

According to an aspect of the present invention for achieving the above object, in the brake disk configured to radially install the ribs between the disk-shaped disk to form a heat dissipation groove between the ribs, by forming an insertion groove in the ribs Provided is a heating device for a brake disc for an automobile, characterized by inserting a heat absorbing member causing a phase change from solid to liquid at a temperature of 100 to 250 ° C. in an insertion groove.

Hereinafter, described in more detail with reference to Figure 3 showing the present invention as an embodiment.

Figure 3 is a perspective view showing a part of the brake disk of the present invention, the ribs 7 are radially installed between the two disks (6) in the form of a disk, the inside of each of the ribs (7) 9) is formed and the heat absorbing member 10 for causing a phase change from solid to liquid within the temperature range of 100 to 250 ℃ is inserted in the insertion groove (9).

The reason for causing the phase change in the temperature absorbing member 10 within the temperature range of 100 to 250 ℃ is that the brake disc 5 is approximately 100-250 ℃ This is because it rises to the temperature range.

The heat absorbing member 10 may be inserted only inside the rib 7 in which the brake pad 4 abuts, but by a ring 11 concentrically formed in the insertion hole 12 of the wheel to maximize heat absorption efficiency. It is more preferable to comprise so that it may be integrated.

As the heat absorbing member 10, a metal material or a solid material that causes a phase change from solid to liquid within a temperature range of 100 to 250 ° C. may be applied. Detailed description will be omitted.

In the present invention, as the ribs 7 are installed between the disks 6, it is natural that the heat dissipation grooves 8 are formed between the ribs 7.

Therefore, when the driver presses the brake pedal for braking while driving, the brake pad 4 is in surface contact with the disk 6 of the brake disk 5 to generate the braking force. ), The high temperature heat is generated in the brake disc.

In this way, when high temperature heat is generated in the brake disc 5 and the internal temperature rises to a temperature range of 100 to 250 ° C., the heat absorbing member 10 inserted into the insertion groove 9 is transferred from solid to liquid. Absorption of high temperature heat while causing a phase change, as well as the generated heat is released to the outside through the heat radiation groove 8 formed by the ribs 7 to prevent the brake disc 6 from overheating. will be.

As described above, the present invention has the following advantages over the prior art.

First, even if the disc generates high heat by stepping on the brake pedal, the solid heat absorbing member embedded in the brake disc absorbs high temperature heat by changing phase into liquid at high temperature (100-250 ° C), causing the brake disc to overheat. This prevents the phenomenon that occurs, thereby preventing the occurrence of vapor lock or fading.

Second, when the temperature is used in the same condition, the speed of temperature rise is significantly slower than the conventional brake disk, it is also possible to prevent the occurrence of vibration or noise during braking.

Third, since the temperature change of the brake disc is small, the durability of the disc can be improved, and thus the life of the disc can be extended.

Claims (5)

A brake disc configured to radially install a rib between discs in a disc shape so that a heat dissipation groove is formed between the ribs, wherein the insertion groove is formed in the rib to heat absorption causing a phase change from solid to liquid in the insertion groove. A heating device for an automobile brake disc, characterized in that the member is inserted. The method of claim 1, And the heat absorbing member is integrated by a ring concentric with the insertion hole of the wheel. The method of claim 1, The heat absorbing member is a heating device for a brake disc for a vehicle, characterized in that the phase change occurs in the temperature range of 100 to 250 ℃. The method according to any one of claims 1 to 3, Heating device of a brake disc for a vehicle, characterized in that the heat absorbing member is made of a metal material. The method according to any one of claims 1 to 3, Heat generating device for a brake disc for a vehicle, characterized in that the heat absorbing member is made of a solid material.

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