CN221003578U

CN221003578U - Brake disc assembly

Info

Publication number: CN221003578U
Application number: CN202323187540.9U
Authority: CN
Inventors: 王晓鸿; 胡京城; 武志国
Original assignee: Kunshan Karasawa Clean Energy Technology Co ltd
Current assignee: Kunshan Karasawa Clean Energy Technology Co ltd
Priority date: 2023-11-24
Filing date: 2023-11-24
Publication date: 2024-05-24
Anticipated expiration: 2033-11-24

Abstract

The application provides a brake disc assembly comprising: an outer disc, an inner disc, and a fixing portion fixing the outer disc and the inner disc; the outer disc has a plurality of inner surfaces contiguous with the inner disc, and the inner disc has a plurality of outer surfaces contiguous with the outer disc; the inner disk and the outer disk are relatively floatably fixed by the fixing portion. Compared with the prior art, the heat dissipation effect is better and abnormal sound does not exist.

Description

Brake disc assembly

Technical Field

The application belongs to the field of bicycles, and particularly relates to an improvement of a brake assembly.

Background

The stainless steel brake disc on the market comprises an integrated stainless steel brake disc and a spliced brake disc. The integrated stainless steel brake disc has poor heat dissipation effect, rapid thermal attenuation of braking force and easy generation of brake abnormal sound.

The spliced brake disc comprises an outer circumference stainless steel part and an inner circumference aluminum alloy spliced brake disc, and the spliced brake disc can slightly improve the heat dissipation effect of the brake disc, but has the problems of high price and abnormal brake sound.

Disclosure of utility model

In order to solve the above technical problems, the present application provides a brake disc assembly, which includes:

an outer disc, an inner disc, and a fixing portion fixing the outer disc and the inner disc;

The outer disc has a plurality of inner surfaces contiguous with the inner disc, and the inner disc has a plurality of outer surfaces contiguous with the outer disc;

The inner disk and the outer disk are relatively floatably fixed by the fixing portion.

In a preferred embodiment, the fixing part comprises a fixing shaft which passes through fixing holes reserved on the outer disc and the inner disc, and the fixing shaft is in non-tight fit with the outer disc and the inner disc so that the inner disc and the outer disc can float relatively.

In a preferred embodiment, the fixed shaft comprises a rivet comprising a rivet base and a rivet cap; the fixing part further comprises a wave-shaped gasket, the riveting base is arranged on the first side of the outer disc and the first side of the inner disc, and the rivet cap is arranged on the second side opposite to the first side.

In a preferred embodiment, the distance between the inner end surface of the rivet cap and the axial end surface of the disc brake disc is greater than the thickness of the wave washer to enable the inner and outer discs to float relatively.

In a preferred embodiment, the inner and outer discs are provided with half holes respectively constituting the fixing holes.

In a preferred embodiment, the inner and outer surfaces are non-concentric circular surfaces.

In a preferred embodiment, the outer disc surface is provided with a plurality of first heat dissipating holes and the inner disc surface is provided with second heat dissipating holes.

In a preferred embodiment, the outer disc is an ALN ceramic material and the inner disc is a stainless steel material.

The technical progress of the application compared with the prior art at least comprises:

1. The ALN material is adopted for the outer disc of the brake disc, and the ALN brake disc has the advantages of good heat radiation, wear resistance and portability, and because the ALN brake outer disc 1 does not contain metal components, the metal squeal noise generated by mutual friction of the traditional stainless steel brake disc and the mating parts (namely the brake block and the brake disc) is avoided

2. The stable friction coefficient, because the ALN brake disc has high heat conductivity, high hardness and good high temperature resistance, the heat generated by braking can be quickly dissipated through the rotation of the ALN brake outer disc, and the reduction of the friction coefficient caused by the fact that the temperature of the brake pairing piece cannot be extremely increased is ensured.

3. The inner disc is made of stainless steel material and has the advantages of mature processing technology and low cost,

Drawings

Fig. 1 is a schematic side view of the present application.

Fig. 2 is a schematic view of the structure of the outer panel.

Fig. 3 is a schematic view of an exploded construction of the inner tray and the securing assembly.

Fig. 4 is a schematic cross-sectional structure of the inner disk and the fixing portion.

Description of the embodiments

Referring to the brake disc assembly shown in fig. 1-4, it comprises a plurality of parts assembled.

An outer disc 1, an inner disc 2, and a fixing portion 3 for fixing the outer disc and the inner disc. The outer disc is made of ALN ceramic material, has the advantages of good heat dissipation, wear resistance and portability, and because the ALN brake outer disc 1 does not contain metal components, metal squeal generated by mutual friction between the traditional stainless steel brake disc and the mating parts (namely the brake pad and the brake disc) is avoided. The inner disc 2 is made of stainless steel material, the inner disc 2 can also be made of aluminum alloy material, and the inner disc 2 can be made through casting, stamping, machining, 3d printing and other processes.

The outer disc 1 has a plurality of inner surfaces abutting the inner disc 2, the inner disc 2 having a plurality of outer surfaces 21 abutting the outer disc 1; the plurality of inner surfaces 11 and outer surfaces 21 are non-concentric circular arc surfaces, and the extending directions of the inner surfaces 11 and the outer surfaces 21 are the same so that the inner surfaces 11 and the outer surfaces 21 can coincide. And the inner and outer discs 2 and 1 are relatively floatably fixed by the fixing portion 3.

Preferably, the outer surfaces of the plurality of inner disks 2 form an umbrella-shaped top view structure of the inner disks.

The outer disk surface is provided with a plurality of radiating holes 13, the radiating holes 13 are approximately track-shaped, the radiating holes 13 are distributed along the extending direction of the outer disk, the surface of the inner disk 2 is provided with a plurality of radiating holes 23, the radiating holes 23 are approximately triangle-shaped, and the radiating holes 23 are distributed along the extending direction of the inner disk 2. Those skilled in the art will appreciate that arranging the heat dissipating holes 23 as densely as possible facilitates heat dissipation from the brake disc itself.

The fixing part 3 comprises a fixing shaft 30, the fixing shaft 30 penetrates through the fixing holes 12 and 22 reserved on the outer disc 1 and the inner disc 2, and the fixing shaft is in non-tight fit with the outer disc 1 and the inner disc 2 so that the inner disc 1 and the outer disc 2 can float relatively. The fixing holes 12 are provided at the junction of the two inner surfaces 11 of the outer disc 2, and similarly at the junction of the outer surfaces 21 of the inner disc 2.

Preferably, the inner disc 1 and the outer disc 2 are respectively provided with half holes (13, 23) for forming fixing holes, and the half holes (13, 23) formed by the inner disc 1 and the outer disc 2 can form a finished hole structure when the inner disc 1 and the outer disc 2 are embedded. A fixed shaft 30 is installed at the hollow inner fixing inner and outer discs 1 and 2, the fixed shaft 30 axially fixes the inner and outer discs, and the radial direction prevents the inner and outer discs from moving each other.

Preferably, the inner disc 1 and the outer disc 2 can be provided with complete holes respectively, and the two complete holes are overlapped when the inner disc and the outer disc are fixed, and the fixed shaft fixes the inner disc and the outer disc through the two overlapped holes.

The fixed shaft comprises a rivet, and the rivet comprises a riveting base 31 and a rivet cap 32. The riveting base 31 is of a cap-shaped structure with the diameter larger than that of the riveting shaft, and the riveting base 31 can limit the axial movement of the rivet after the riveting is completed. The rivet is hollow as shown in fig. 4, and the rivet base 31 is located on the first side of the outer and inner disks after the completion of the rivet connection.

The fixed portion further includes a wave washer 33, the rivet base is disposed on a first side of the outer and inner discs, and the wave washer and rivet cap 32 are disposed on a second side opposite the first side. The distance d between the inner end surface of the rivet cap 32 and the axial end surface of the disc brake disc is greater than the thickness of the wave washer, so that the inner and outer discs have an axial movement gap g which is so small that the inner and outer discs can float relatively, which refers to a small movement of the inner and outer discs in the axial direction which does not separate the abutment of the inner and outer surfaces 11, 21.

Preferably, the fixing device 3 may also comprise other fixing components with shaft fixing elements, for example, screw nuts are used instead of the rivet structures as fixing, and the screw nuts do not completely fit with the inner and outer discs so that there is a certain floating space between the inner and outer discs.

Preferably, the outer disk surface is provided with a plurality of first heat dissipating holes, and the inner disk surface is provided with a second heat dissipating hole, which may be of a gas shape other than that shown in the drawings.

1. the ALN material is adopted for the outer disc of the brake disc, and the ALN brake disc has the advantages of good heat dissipation, wear resistance and portability, and because the ALN brake outer disc 1 does not contain metal components, metal squeal generated by mutual friction between the traditional stainless steel brake disc and the mating parts (namely the brake pad and the brake disc) is avoided.

3. The inner disc is made of stainless steel materials and has the advantages of mature processing technology and low cost.

Claims

1. A brake disc assembly comprising:

the inner disc and the outer disc can be relatively floatably fixed through the fixing part;

the outer disc is made of ALN ceramic material, and the inner disc is made of stainless steel material.

2. The brake disc assembly of claim 1, wherein the securing portion includes a securing axle that passes through securing holes reserved on the outer and inner discs, the securing axle being non-interference fit with the outer and inner discs to enable the inner and outer discs to float relative to each other.

3. The brake disc assembly of claim 2 wherein the stationary shaft comprises a rivet, the rivet comprising a rivet base and a rivet cap; the fixing part further comprises a wave-shaped gasket, the riveting base is arranged on the first side of the outer disc and the first side of the inner disc, and the rivet cap is arranged on the second side opposite to the first side.

4. A brake disc assembly according to claim 3, wherein the distance between the inboard end face of the rivet cap and the disc brake disc axial end face is greater than the thickness of the wave washer to enable the inner disc and outer disc to float relatively.

5. A brake disc assembly according to claim 2, wherein the inner disc and the outer disc are provided with half holes respectively constituting the fixing holes.

6. A brake disc assembly according to claim 1, wherein the inner and outer surfaces are non-concentric circular surfaces.

7. The brake disc assembly of claim 1, wherein the outer disc surface is provided with a plurality of first louvers and the inner disc surface is provided with a second louver.