CN106763353A - The duct-ventilated air-cooled automobile-used brake disc of one kind tool - Google Patents

Abstract

The invention provides one kind duct-ventilated air-cooled automobile-used brake disc of tool, including ventilating duct, the ventilating duct is located between inside brake disk and outer brake disc；Several uniform column units are provided with the ventilating duct；The column unit includes some columns, and some described column one end are connected with inside brake disk and outer disc outer diameter；The column is in drops, and the column unit includes the first column, the second column and the 3rd column；First column and the second column are in half drops；3rd column is in holohedral symmetry drops；The present invention can accelerate the flowing of fluid in disk, heat dissipation is excellent, the presence of drops column stabilizes the heat flow field between brake disc, with the hot-fluid that the external world forms stabilization, be highly advantageous to the exchange of heat, so that brake disc temperature is reduced to zone of reasonableness in the short period of time, it is ensured that the brake efficiency of brake.

Description

An air-cooled vehicle brake disc with air passage

technical field

The invention relates to the field of brake discs of automobiles, driving vehicles or traffic equipment, in particular to an air-cooled vehicle brake disc with air ducts.

Background technique

Oil shortages, global warming, and car companies all over the world have put in a lot of effort to improve vehicle fuel economy. Specifically, the existing automobile lightweight technology has received extensive attention, and this technology can greatly reduce fuel consumption without affecting performance.

Specifically, lowering the quality award of the vehicle chassis directly affects the performance of the vehicle as a whole, and further affects the fuel economy of the vehicle. In this case, the reduction of the unsprung mass of the body is directly related to the wheel drive load, which can effectively improve the fuel economy of the vehicle, so this related technology is beginning to develop rapidly.

Among these effective technologies, ZL200710187690.6 uses aluminum alloy to manufacture brake inlays and other aluminum and gray cast iron mixed to manufacture brake discs, etc., making the brakes lighter in weight, superior in braking performance, heat resistance and wear resistance. There are improvements, among which US7100748B2 also improves the heat dissipation efficiency by optimizing the structure of the air duct, and the heat dissipation efficiency of the drop-shaped air duct described in this paper is even more superior.

The brake disc is made of gray cast iron, which has a flaky stone-ground structure, and this material exhibits excellent braking characteristics such as vibration reduction, damping, heat radiation, and lubrication.

Gray cast iron is relatively heavy, with a density of about 7.2g/cm ³ . Therefore, gray cast iron is the focus of automobile lightweight research, and reducing its weight through various technologies or finding its alternative materials is an effective means to improve automobile fuel economy.

Therefore, in order to overcome the problems of low heat dissipation efficiency, serious thermal fading phenomenon, brake squeal noise and short life of the existing brake system, this paper invented a brake disc that is lighter in weight and still superior in performance, to a certain extent alleviated the problem.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides an air-cooled vehicle brake disc with an air passage, which can accelerate the flow of fluid in the disc and has excellent heat dissipation performance; the existence of the drop-shaped column stabilizes the brake disc The heat flow field between them forms a stable heat flow with the outside world, which is very conducive to heat exchange, so that the temperature of the brake disc can be reduced to a reasonable range in a short period of time to ensure the braking performance of the brake.

The present invention achieves the above-mentioned technical purpose through the following technical means.

An air-cooled vehicle brake disc with an air duct, comprising an air duct, the air duct is located between the inner brake disc and the outer brake disc; several evenly distributed column units are arranged in the air duct The column unit includes several columns, one end of which is connected to the outer diameter of the inner brake disc and the outer brake disc; the column is in the shape of a water drop.

Further, several of the column units are uniformly distributed in the circumferential direction with the brake disc as the center, and the uniform distribution angle α is between 25° and 35°.

Further, the column unit includes a first column, a second column and a third column; the first column and the second column are in the shape of a half drop; the third column is in the shape of a fully symmetrical drop; the diameter of the first column is The length in the radial direction is L1, the length in the radial direction of the second column is L2, and the length in the radial direction of the third column is L3, and the length relationship is: L1>L2>L3.

Further, the length L1 of the first column in the radial direction is the difference between the radius of the inner ring and the outer ring of the outer brake disc; the length L2 of the second column in the radial direction is equal to the length L1 of the first column in the radial direction The relationship is: L2/L1=2/3～3/4; the relationship between the length L3 in the radial direction of the third column and the length L1 in the radial direction of the first column is: L3/L1=1/3～1/2 .

Further, the angle β of the half drop-shaped corner of the first column and the second column is the same, and β=(0.4-0.6)α; the angle of the full drop-shaped corner of the third column is 2β.

Further, the inner brake disc and the outer brake disc are provided with several through hole groups, and the through hole groups penetrate through the air passage.

Further, the group of through holes is uniformly distributed in the circumferential direction with the brake disc as the center, and the uniform distribution angle α is between 25° and 35°.

Further, the through-hole group includes a first through-hole unit and a second through-hole unit; the first through-hole unit is located between the first column and the second column of the column unit, arranged in a straight line; the The second through-hole unit is located between the third column and the second column of the column unit, arranged in a Y shape, and the Y-shaped symmetry line coincides with the symmetry line of the third column.

Further, the first through-hole unit includes several through-holes, the number of the through-holes is preferably 3-4, and the distance between the through-holes is 10-15 mm; the second through-hole unit includes several through-holes, and the through-holes The number is preferably 6, and the pitch of the through holes is 15-20 mm.

Further, the diameter of the through hole is 4-8mm.

The beneficial effects of the present invention are:

1. The air-cooled vehicle brake disc with air ducts according to the present invention can accelerate the flow of fluid in the disc and has excellent heat dissipation performance.

2. In the air-cooled vehicle brake disc with air ducts of the present invention, the existence of the drop-shaped column stabilizes the heat flow field between the brake discs, and forms a stable heat flow with the outside world, which is very beneficial to heat transfer. Exchange, so that the temperature of the brake disc can be reduced to a reasonable range in a short period of time to ensure the braking performance of the brake.

3. The air-cooled vehicle brake disc with air passages of the present invention not only has the effect of heat dissipation, but the existence of through holes greatly alleviates the thermal expansion of the brake disc, so that the brake noise is reduced to a certain extent. control.

Description of drawings

Fig. 1 is a perspective view of an air-cooled vehicle brake disc with air ducts according to the present invention.

Fig. 2 is a front view of the air-cooled vehicle brake disc with air ducts according to the present invention.

Fig. 3 is a top view of the air-cooled vehicle brake disc with ventilation channels according to the present invention.

Fig. 4 is a cross-sectional view of the drop-shaped column of the present invention.

Fig. 5 is a distribution diagram of columns and through holes of the present invention.

In the picture:

1-first column; 2-second column; 3-third column; 4-through hole.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

As shown in Fig. 1, Fig. 2 and Fig. 3, a kind of air-cooled vehicle brake disc with ventilating passage comprises ventilating passage, and described ventilating passage is positioned between inner brake disc and outer brake disc; There are several evenly distributed column units in the track; the column units include several columns, one end of which is connected to the outer diameter of the inner brake disc and the outer brake disc; the column is in the shape of a drop. The drop-shaped design can speed up the flow of fluid in the plate, and has excellent heat dissipation performance. The plurality of column units are evenly distributed in the circumferential direction with the brake disc as the center, and the uniform distribution angle α is optimal between 25° and 35°.

The column unit includes a first column 1, a second column 2 and a third column 3; the first column 1 and the second column 2 are in the shape of a half drop; the third column 3 is in the shape of a fully symmetrical drop; the The length of the first column 1 in the radial direction is L1, the length of the second column 2 in the radial direction is L2, and the length of the third column 3 in the radial direction is L3, and the length relationship is: L1>L2>L3. The existence of three drop-shaped columns stabilizes the heat flow field between the brake discs, forming a stable heat flow with the outside world, which is very conducive to heat exchange, so that the temperature of the brake disc can be reduced to Reasonable range to ensure the braking performance of the brake.

As shown in Figure 2 and Figure 4, in order to achieve a better effect, the length L1 of the radial direction of the first column 1 is the difference between the radius of the inner ring of the outer brake disc and the radius of the outer ring through fluid analysis; The relationship between the length L2 of the second column 2 in the radial direction and the length L1 of the first column 1 in the radial direction is: L2/L1=2/3～3/4; the length L3 of the third column 3 in the radial direction is related to the length L1 of the first column 1 in the radial direction: The relationship between the length L1 of a column 1 in the radial direction is: L3/L1=1/3˜1/2. The angle β of the half drop-shaped corner of the first column 1 and the second column 2 is the same, and β=(0.4-0.6)α; the angle of the full drop-shaped corner of the third column 3 is 2β.

As shown in FIG. 5 , the inner brake disc and the outer brake disc are provided with several through hole groups, and the through hole groups penetrate through the air passage. The existence of several through hole groups greatly alleviates the thermal expansion of the brake disc, so that the brake noise is controlled to a certain extent. In addition, the existence of the through hole group can make the processed metal debris be cleaned in time, and reduce the friction loss caused by the metal debris. The through-hole groups are evenly distributed in the circumferential direction with the brake disc as the center, and the uniform distribution angle is consistent with the uniform distribution angle of several of the column units, that is, α is between 25° and 35°.

After optimization, the through hole group includes a first through hole unit and a second through hole unit; the first through hole unit is located between the first column 1 and the second column 2 of the column unit, in a straight line The second through-hole unit is located between the third column 3 and the second column 2 of the column unit in a Y-shaped arrangement, and the Y-shaped symmetry line coincides with the symmetry line of the third column 3 . The design of Y-shaped and straight-shaped hole units not only has the effect of heat dissipation, but also can alleviate the end surface runout of the brake disc caused by thermal expansion during the heating up process of the brake, thereby reducing the brake noise generated.

The first through-hole unit includes several through-holes 4, the number of the through-holes 4 is preferably 3-4, and the distance between the through-holes 4 is 10-15 mm; the second through-hole unit includes several through-holes 4, the The number of through holes 4 is preferably 6, and the distance between the through holes 4 is 15-20 mm. The diameter of the through hole 4 is 4-8mm.

The described embodiment is a preferred implementation of the present invention, but the present invention is not limited to the above-mentioned implementation, without departing from the essence of the present invention, any obvious improvement, replacement or modification that those skilled in the art can make Modifications all belong to the protection scope of the present invention.

Claims (10)

1. a kind of to have duct-ventilated air-cooled automobile-used brake disc, it is characterised in that including ventilating duct, the ventilating duct is located at interior Between brake disc and outer brake disc；Several uniform column units are provided with the ventilating duct；If the column unit is included Dry column, some described column one end are connected with the external diameter of inside brake disk and outer brake disc；The column is in drops.

2. it is according to claim 1 to have duct-ventilated air-cooled automobile-used brake disc, it is characterised in that described in several Column unit is uniform by center of circle circumferencial direction of brake disc, and uniform angle α is between 25 °~35 °.

3. it is according to claim 1 to have duct-ventilated air-cooled automobile-used brake disc, it is characterised in that the column unit Comprising the first column (1), the second column (2) and the 3rd column (3)；First column (1) and the second column (2) are in half water droplet Shape；3rd column (3) is in holohedral symmetry drops；The length of the first column (1) radial direction is L1, and described second stands The length of post (2) radial direction is L2, and the length of the 3rd column (3) radial direction is L3, and length relation is：L1>L2> L3。

4. it is according to claim 3 to have duct-ventilated air-cooled automobile-used brake disc, it is characterised in that first column (1) the length L1 of radial direction is the difference of outer brake disc inner radii and outer radii；Second column (2) radial direction Length L2 be with the length L1 relations of the first column (1) radial direction：L2/L1=2/3~3/4；3rd column (3) footpath It is to the length L3 and the length L1 relations of the first column (1) radial direction in direction：L3/L1=1/3~1/2.

5. it is according to claim 3 to have duct-ventilated air-cooled automobile-used brake disc, it is characterised in that first column (1) angle beta with the drops wedge angle of the second column (2) half is identical, and β=(0.4~0.6) α；The full water of 3rd column (3) The angle of drop-wise wedge angle is 2 β.

6. the duct-ventilated air-cooled automobile-used brake disc of tool according to claim any one of 1-5, it is characterised in that described Inside brake disk is provided with some sets of vias with outer brake disc, and the sets of vias runs through with the ventilating duct.

7. the duct-ventilated air-cooled automobile-used brake disc of tool according to claim 6, it is characterised in that the sets of vias with Brake disc is uniform center of circle circumferencial direction, and uniform angle α is between 25 °~35 °.

8. it is according to claim 7 to have duct-ventilated air-cooled automobile-used brake disc, it is characterised in that the sets of vias bag Include first through hole unit and the second through hole unit；The first through hole unit be located at the column unit the first column (1) and Between second column (2), arranged in yi word pattern；The second through hole unit be located at the column unit the 3rd column (3) and Between second column (2), arranged in Y-shaped, and Y-shaped line of symmetry overlaps with the line of symmetry of the 3rd column (3).

9. it is according to claim 8 to have duct-ventilated air-cooled automobile-used brake disc, it is characterised in that the first through hole Unit includes some through holes (4), and through hole (4) quantity is preferably 3-4, and through hole (4) spacing takes 10~15mm；Described second Through hole unit includes some through holes (4), and through hole (4) quantity is preferably 6, and through hole (4) spacing takes 15~20mm.

10. it is according to claim 9 to have duct-ventilated air-cooled automobile-used brake disc, it is characterised in that the through hole (4) Diameter is 4-8mm.