MODIFIED VEHICLE-USED BRAKE DISC COMPOSITE STRUCTURE

Abstract

A modified vehicle-used brake disc composite structure, comprising an inner ring piece made from a lightweight metal and a disc body having a high rigidity, wear-resistance and heat-resistance; the inner surface of the inner ring piece is equally divided and extends to form a plurality of arm-like fixing portions; a ring piece is disposed at the outer edge of the inner ring piece; the two side surfaces of the ring piece respectively form a first engaging surface; the disc body is provided with a plurality of annular-shaped heat-dissipation holes; a second engaging surface is disposed on one side of the disc body; the two side surfaces of the inner ring piece are respectively pressed by the two disc bodies, enabling the second engaging surfaces to be respectively fixed to the first engaging surfaces via friction welding method so as to form the brake disc.

Claims

1. A modified vehicle-used brake disc composite structure, comprising: an inner ring piece made from a lightweight metal, and a disc body having a high rigidity, wear-resistance and heat-resistance, wherein the inner surface of the inner ring piece is equally divided and extends to form a plurality of arm-like fixing portions, wherein a ring piece is disposed at the outer edge of the inner ring piece, wherein the two side surfaces of the ring piece form a first engaging surface, wherein the disc body is provided with a plurality of annular-shaped heat-dissipation holes, wherein a second engaging surface is disposed on one side of the disc body, wherein the two side surfaces of the inner ring piece are respectively pressed by the two disc bodies, enabling the second engaging surfaces to be respectively fixed to the first engaging surfaces via friction welding method to form the brake disc.

2. The modified vehicle-used brake disc composite structure of claim 1, wherein a first engaging portion, which is inwardly-recessed, is disposed at the outer edge of the two sides of the inner ring piece, wherein a hole is disposed on the first engaging portion in the radial direction, and an inner ring hole is disposed in the middle of the disc body, wherein a plurality of the second engaging portions, which is convex-shaped, is integrally disposed in the inner ring hole of the disc body, wherein a protruding portion is disposed on one side of the second engaging portion in the radial direction, enabling the two side surfaces of the inner ring piece to be correspondingly pressed by the two disc bodies, wherein the second engaging portions of the two disc bodies are respectively engaged with the first engaging portions, and the protruding portions of each side are respectively inserted into the corresponding holes, enabling the second engaging surfaces of the two disc bodies to be respectively fixed to the first engaging surfaces on the corresponding side via friction welding method.

3. The modified vehicle-used brake disc composite structure of claim 1, wherein a side edge is disposed on one side surface of the disc body near the inner ring piece, wherein the second engaging surface is tightly attached to the first engaging surface of the inner ring piece, and the corresponding side edges of the two sides contact each other, enabling the second engaging surfaces of the two disc bodies and the first engaging surfaces of the two sides of the inner ring piece to be fixed via friction welding method, and the corresponding side edges to be fixed via friction welding method.

4. The modified vehicle-used brake disc composite structure of claim 1, wherein the inner ring piece is made from a lightweight metal such as aluminum alloy, magnesium alloy or titanium alloy.

5. The modified vehicle-used brake disc composite structure of claim 1, wherein the disc body is made from stainless steel.

6. The modified vehicle-used brake disc composite structure of claim 1, wherein the disc body is made from heat-treated steel or iron.

7. The modified vehicle-used brake disc composite structure of claim 1, wherein the disc body is made from a metal coated with Teflon or other wear-resistant material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To clearly expound the present invention or technical solution, the drawings and embodiments are hereinafter combined to illustrate the present invention. Obviously, the drawings are merely some embodiments of the present invention and those skilled in the art can associate themselves with other drawings without paying creative labor.

[0019] FIG. 1 is a perspective view of the first embodiment of the present invention.

[0020] FIG. 2 is an exploded perspective view of the first embodiment of the present invention.

[0021] FIG. 3 is a front view of the first embodiment of the present invention.

[0022] FIG. 4 is a sectional view taken along line 4-4 of FIG. 3.

[0023] FIG. 5 is a perspective view of the second embodiment of the present invention.

[0024] FIG. 6 is an exploded perspective view of the second embodiment of the present invention.

[0025] FIG. 7 is a front view of the second embodiment of the present invention.

[0026] FIG. 8 is a sectional view taken along line 8-8 of FIG. 7.

DETAILED DESCRIPTION OF THE INVENTION

[0027] Drawings and detailed embodiments are combined hereinafter to elaborate the technical principles of the present invention.

Embodiment 1

[0028] As shown in FIGS. 1-4, the brake disc 1 comprises an inner ring piece 10 and two disc bodies 20. The inner surface of the inner ring piece 10 is equally divided and extends to form a plurality of arm-like fixing portions 11 in the radial direction, through which the brake disc 1 can be mounted to the frame of the bicycle. A ring piece 12 is disposed at the outer edge of the inner ring piece 10, and a protruding step structure is disposed between the outer edge of the inner ring piece 10 and the ring piece 12. The two side surfaces of the ring piece 12 are respectively provided with a first engaging surface 121. The outer edge of the two sides of the inner ring piece 10 is provided with a plurality of the inwardly-recessed first engaging portions 13. The first engaging portion 13 is provided with a hole 14 in the radial direction. The inner ring piece 10 is made from a lightweight metal such as aluminum alloy, magnesium alloy, or titanium alloy.

[0029] The disc body 20 is annular-shaped. A second engaging surface 21 is disposed on one side of the disc body 20. A plurality of heat-dissipation holes is disposed on the disc body 20, and an inner ring hole 23 is disposed in the middle of the disc body 20. A plurality of the convex-shaped second engaging portions 24 is integrally disposed in the inner ring hole 23 of the disc body 20. A protruding portion 25 is disposed on one side of the second engaging portion 24 in the radial direction. The disc body 20 is made from a material having a high rigidity, heat-resistance and wear-resistance, such as stainless steel, heat-treated steel/iron, or metal coated with Teflon or other wear-resistant material, which can improve the wear-resistance when the disc body 20 is rubbed with the caliper to prolong the functional life of the brake disc.

[0030] During assembly, the two side surfaces of the inner ring piece 10 are correspondingly pressed by the two disc bodies, enabling the second engaging portions 24 of the two disc bodies 20 to be respectively embedded into the first engaging portion, and each protruding portion 25 to be respectively inserted into the corresponding holes 14. The second engaging surfaces 21 of the two disc bodies 20 are respectively fixed to the first engaging surfaces 121 of the two sides of the inner ring piece 10. Thus, the two sides of the inner ring piece 10 are tightly pressed by the two disc bodies 20 to form the brake disc 1.

[0031] The two disc bodies 20 are fixed to the two sides of the inner ring piece 10 via friction welding method to form the brake disc 1. The overall weight of the brake disc 1 can be reduced due to the inner ring piece 10 made from a lightweight metal. Furthermore, the disc body 20 has a high rigidity, heat-resistance and wear-resistance, effectively prolonging the functional life of the disc body 20. The first engaging portion 13 is engaged with the second engaging portion 14, which can improve the twisting force and stabilize the integral structure. Thus, the present invention is convenient and innovative.

[0032] During assembly, the two disc bodies respectively press the two sides of the inner ring piece 10. The second engaging portions 24 of the two disc bodies 20 are respectively embedded into the first engaging portions 13, and each of the protruding portions 25 are respectively inserted into the corresponding holes 14, enabling the second engaging surfaces 21 of the two disc bodies 20 to be fixed to the two first engaging surfaces 121 of the inner ring piece 10 via friction welding method.

Embodiment 2

[0033] As shown in FIGS. 5-8, a side edge 26 is disposed along one side surface of the disc body 20 near the inner ring piece 10. The second engaging surface 21 is tightly attached to the first engaging surface 121 of the inner ring piece 10, and the side edges 26 of the two sides contact each other, which are fixed via friction welding method so as to improve the binding force and the binding stability.

[0034] During use, the two side surfaces of the inner ring piece 10 are respectively pressed by the two disc bodies 20. The overall weight of the brake disc 1 can be reduced due to the inner ring piece 10 made from a lightweight metal. The disc body 20 has a high rigidity, heat-resistance and wear-resistance, which can improve the rigidity of the disc body 20 and reduce the replacement frequency of the brake disc 1. Thus, the user can feel safe when using the present invention.

[0035] A plurality of the inwardly-recessed first engaging portions 13 is disposed at the outer edge of the two sides of the inner ring piece 10. Each of the first engaging portions 13 are provided with a hole 14 in the radial direction. A plurality of the second engaging portions 24 is integrally disposed in the inner ring hole 23 of the disc body 20, and one side of each of the second engaging portions 24 is provided with a protruding portion 25 in the radial direction. During assembly, the corresponding second engaging portions 24 of the two disc bodies 20 are respectively embedded into the first engaging portions 13, and each of the protruding portions 25 are respectively inserted into the corresponding holes 14, enabling the second engaging surfaces 21 of the two disc bodies 20 to be respectively fixed to the first engaging surfaces 121 of the two sides of the inner ring piece 10 via friction welding method. Through the engagement between the first engaging portion 13 and the second engaging portion 24, and the engagement between the protruding portion 25 and the hole 14, the twisting force is greatly improved to stabilize the integral structure. A side edge 26 is disposed on one side surface of the disc body 20 near the inner ring piece 10. The second engaging surface 21 is tightly attached to the first engaging surface 121 of the inner ring piece 10, and the side edges of the two sides are contacted, which are fixed via friction welding method to improve the binding force and stabilize the structure.

[0036] The previous descriptions are of preferred examples for implementing the invention, and the scope of the invention should not necessarily be limited by this description. The scope of the present invention is defined by the claims.