TW201827724A - Disc brake system - Google Patents

Abstract

The present invention relates to a disc brake system, which includes a cushioning device, a wheel, a brake caliper and a brake disc having a plurality of irregular outer margins. The brake caliper is provided with at least two brake pads, each of which comprises a lining board and a friction material. The direction away from the wheel on the friction material is called friction material outer arc length, which contacts the brake disc to form an outer trajectory; the direction close to the wheel on the friction material is called friction material inner arc length, which contacts the brake disc to form an inner trajectory. Wherein, circumference of the radius of the outer trajectory is integral multiple of the friction material outer arc length, and the quantity of the irregular outer margins of the brake disc is arranged by the integral multiple. As such, the present invention can keep the contact region between the friction material and the brake disc within the same region, so that the brake system can work without abnormal vibration and maintain in highly stability while braking a vehicle.

Description

Disc brake system

The present invention relates to a disc brake system, and more particularly to a disc brake system suitable for a brake disc having a profiled outer edge shape.

Please refer to FIG. 7 to FIG. 9 , which are respectively a configuration diagram of a conventional disc brake system, a partial side view of the disc brake system, and a contact state diagram of the brake disc and the brake disc. One of the locomotives 91 shown in the drawing includes a suspension device 92, a brake caliper 93, a wheel 94 and a brake disc 95. The brake disc 95 is mounted on the wheel 94 via a locking bolt 953; the brake caliper 93 is assembled. On the suspension device 92, there is a two-wheel drive 930, each of which includes a lining 931 and a friction material 932. The friction material 932 can clamp the brake disk 95 via the brake caliper 93. The braking force is generated to limit the rotation of the brake disc 95 to decelerate or rest the wheel 94. Among them, the outer edge of the brake disc 95 is not a general circular shape, but has various shaped outer edges 951 to increase the design space application, generally referred to as a wave disc.

Please refer to FIGS. 10A to 10D , which are diagrams of contact states of the conventional disc and the brake to make the sheet rotate at different angles of the wheel. However, in the above-described brake disc 95 in which the proportion of the profiled outer edge 951 is not considered, when the wheel 94 is rotated to various angular states, the contact range 933 of the friction material 932 with the brake disc 95 will be affected by the profiled outer edge 951. The change of different areas is generated, and the different changes of the area will cause the instability of the braking force, which causes the vibration of the specific frequency generated by the locomotive 91 in the braking state to occur, which makes the rider feel uncomfortable.

Inventors for this reason, in the spirit of active invention, thinking about a disc brake system that can solve the above problems, after several research experiments to complete the present invention.

The main object of the present invention is to provide a disc brake system which can improve the influence of the profile of the outer surface of the brake disc by the contour of the contact between the friction material of the sheet and the brake disc. As a result, when the wheel is rotated to various angles, the contact range between the friction material and the brake disc is different. The different changes of the area will cause the instability of the braking force, and the vibration caused by the specific frequency generated by the locomotive in the braking state will occur. Let the rider feel uncomfortable.

To achieve the above object, the disc brake system of the present invention is disposed on a locomotive and includes a suspension device, a wheel, a brake caliper and a brake disc. The shock absorber device is arranged on a frame, the wheel is pivoted on the shock absorber, the brake caliper is set on the shock absorber, the brake caliper has at least two brakes, and each brake includes a liner. And a friction material, wherein the axial direction of the friction material away from the wheel is an arc length of the outer edge of the friction material, and the axial direction of the friction material near the wheel is an arc length of the inner edge of the friction material. It can be seen from the above that in order to satisfy the stability of the wheel when rotating, the appearance includes an outer edge arc and an inner edge arc, and the shape constructed by the two arcs can respectively form a complete arc when the wheel rotates, There will be eccentricities.

In addition, the brake disc set is arranged on the wheel and located between the two brakes, and has a plurality of shaped outer edges, so that the friction material can selectively contact with the brake disc to generate a braking effect, wherein the friction material outer edge arc The long contact with the brake disc forms a friction track outer edge, and has a friction track outer edge radius. The inner edge of the friction material has an arc length which is in contact with the brake disc to form a friction track inner edge, and has a friction track inner edge radius. In order to prevent the instantaneous outer contact edge of the brake disc from affecting the instantaneous contact area between the friction material and the disc, and causing a difference in the braking strength at different angles of the wheel rotation, the present invention is characterized by the circumferential length of the outer radius of the friction track. It is an integral multiple of the arc length of the outer edge of the friction material, and the number of the outer shaped outer edges of the brake disc is arranged according to the integral multiple.

The brake disc may further include a plurality of heat dissipation holes, and the number of the plurality of heat dissipation holes may be arranged according to the integral multiple. Therefore, through the structural design of the heat dissipation hole, in addition to avoiding the influence of the expansion deformation caused by the accumulated heat of the brake disk, the dust generated when the brake is rubbed can be discharged outside the disk, thereby effectively maintaining the overall braking strength.

The profiled outer edge may be provided with a plurality of notches on the outer edge of the brake disc. In this way, different brake discs can establish a unique style and strengthen their personal style. The invention is limited to a plurality of gaps on the outer edge of the brake disc, which is different from the traditional disc-shaped design style. .

Furthermore, in order to prevent the multi-shaped outer edge of the brake disc from affecting the instantaneous contact area between the friction material and the disc, causing a difference in the braking strength at different angles of the wheel rotation, another feature of the present invention is that within the outer radius of the friction track The area minus the radius of the inner radius of the friction track is an integral multiple of the area of the friction material, and the number of the outer shaped outer edges of the brake disk is arranged in an integer multiple. Therefore, in addition to the integral length of the outer radius of the friction trajectory and the arc length of the outer edge of the friction material, the present invention can also pass through the frictional contact area of the brake disk as an integral multiple of the friction material area. Considering the standard, at this time, if the shape of the friction material is slightly changed, there are still sufficient restrictions to be able to perform judgment analysis to prevent the locomotive from being abnormally shaken when the brake disc is a deformed outer edge.

The above summary and the following detailed description are exemplary in order to further illustrate the scope of the invention. Other objects and advantages of the present invention will be described in the following description and drawings.

1 to 3 are respectively a configuration diagram, a partial side view and a cross-sectional view taken along line A-A of FIG. 2 of a disc brake system according to a preferred embodiment of the present invention. The figure shows a disc brake system which is arranged on a locomotive 1 and includes a suspension device 2, a brake caliper 3, a wheel 4 and a brake disc 5 having a profiled outer edge 51. In the present embodiment, the profiled outer edge 51 is provided with a plurality of notches 50 at the outer edge portion of the brake disc 5 to form a special shape of the brake disc 5 to enhance the rider's personal style. The disc brake system of the present invention considers the improved design of the impact of the profiled outer edge 51 on the friction and stability of the brake system, thereby effectively improving the overall braking performance and riding comfort.

In the present embodiment, the suspension device 2 is assembled on a frame (not shown); the wheel 4 is pivotally mounted on the suspension device 2; the brake caliper 3 is disposed on the suspension device 2, and has two vehicles. A sheet 30, each of which includes a backing plate 31 and a friction material 32 for providing the frictional force required for braking. On the other hand, the brake disc 5 is mounted on the wheel 4 via the lock bolt 53 and is located between the two brake carriages 30, so that the brake caliper 3 can be clamped as needed to cause the locomotive 1 to decelerate or stop. In the embodiment, the brake disc 5 includes a plurality of heat dissipation holes 52. In addition to avoiding the influence of the expansion deformation caused by the accumulated heat of the brake disc 5, the dust generated when the brake is rubbed can be discharged to the brake disc. Outside the disk 5, the overall braking strength is effectively maintained.

In addition, please refer to FIG. 4, which is an exploded view of a brake disc and a brake shoe according to a preferred embodiment of the present invention. As shown in the figure, the range drawn by the broken line of the brake shoe 30 refers to the appearance of a friction material 32, wherein the direction of the friction material 32 away from the axis C of the wheel 4 is a friction material outer edge arc length 34, In contrast, the axial direction of the friction material 32 near the wheel 4 is a friction material inner edge arc length 35. When the rider presses a brake lever to urge the brake caliper 3 to act, the contact range covered by the friction material 32 and the brake disc 5 at this time includes the following areas: the outer edge of the friction material is 34 and the brake disc 5 The friction will produce a friction track outer edge 54 on the brake disc 5, and the outer edge 54 of the friction track will have a friction track outer radius radii 55 to the axis C of the wheel 4; relatively, the inner edge of the friction material has an arc length of 35 Friction with the brake disc 5 produces a friction track inner edge 56 in the brake disc 5, at which point the friction track inner edge 56 has a friction track inner edge radius 57 for the axle 4 axis C. In summary, the area covered by the outer radius radii 55 of the friction trajectory is subtracted from the area covered by the radius rim radius 57 of the friction trajectory, that is, the area in which the friction material 32 can make contact with the brake disc 5 by one rotation.

However, if the amount of change in the friction area of the brake disc 5 and the friction material 32 caused by the outer edge 51 is further taken into consideration, please refer to FIG. 5, which is a brake disc and a brake disc for a preferred embodiment of the present invention. Contact state diagram. As shown, the notch 50 of the profiled outer edge 51 will affect the contact range 33 when actually in contact with the friction material 32. At this time, in order to avoid the instability of the braking force caused by the change amount of the contact range 33, the present invention is designed to adjust the contact range 33 of the brake disc 5 and the friction material 32 when the wheel 4 is rotated to different angles. Consistently, the method is as follows: the circumferential length 54 of the outer radius radii 55 of the friction trajectory is limited to an integral multiple of the outer arc length 34 of the friction material, and the number of the plurality of shaped outer edges 51 of the brake disc 5 is based on the integer The arrangement is doubled; or, in terms of the contact area, the area within the radius rim of the friction trajectory 55 minus the area within the radius rim radius 57 of the friction trajectory is an integral multiple of the area of the friction material 32, and the plural of the brake disk 5 The number of profiled outer edges 51 is arranged in accordance with the integer multiple. In the present embodiment, the circumferential length 54 of the friction track outer edge radius 55 is eight times the outer edge arc length 34 of the friction material. Thereby, by adjusting the number equal relationship of the outer edge 51 of the profiled shape, the instantaneous contact area of the contact range 33 of the brake disc 5 and the friction material 32 is effectively controlled, so that the locomotive 1 does not have a deformed shape because the brake disc 5 is shaped. Abnormal vibration occurred at edge 51.

Please refer to FIG. 6A to FIG. 6D , which are respectively a contact state diagram of the brake disc and the brake to make the sheet rotate at different angles of the wheel according to a preferred embodiment of the present invention. As shown in the figure, regardless of the angle at which the wheel 4 is rotated, although the contact portion of the friction material 32 with the brake disc 5 is different, the contact range 33 can be made uniform. In addition, if the brake disc 5 includes a plurality of heat dissipation holes 52, the number thereof is also arranged according to the integral multiple, thereby maintaining the area of the contact range 33, and the stability of the brake is not broken due to the arrangement of the heat dissipation holes 52.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

1,91‧‧‧Motorcycle
2,92‧‧‧Shock absorber
3,93‧‧‧ brake calipers
30,930‧‧‧煞车来片
31,931‧‧‧ lining
32,932‧‧‧ Friction material
33,933‧‧‧Contact range
34‧‧‧ Friction material outer edge arc length
35‧‧‧The inner edge of the friction material is arc length
4,94‧‧‧ wheels
5,95‧‧‧煞盘盘
50‧‧‧ gap
51,951‧‧‧ Shaped rim
52‧‧‧ vents
53,953‧‧‧Lock bolts
54‧‧‧ Friction track outer edge
55‧‧‧ Friction track outer radius
56‧‧‧ Friction track inner edge
57‧‧‧ friction rim inner radius
C‧‧‧Axis

1 is a configuration diagram of a disc brake system according to a preferred embodiment of the present invention. 2 is a partial side elevational view of a disc brake system in accordance with a preferred embodiment of the present invention. Figure 3 is a cross-sectional view along line A-A of Figure 2 of the disc brake system of a preferred embodiment of the present invention. 4 is an exploded view of a brake disc and a brake shoe according to a preferred embodiment of the present invention. Fig. 5 is a view showing a state of contact between a brake disc and a brake shoe according to a preferred embodiment of the present invention. 6A to 6D are diagrams showing the contact state of the brake disc and the brake to different angles of the wheel rotation according to a preferred embodiment of the present invention. Fig. 7 is a configuration diagram of a conventional disc brake system. Figure 8 is a partial side elevational view of a conventional disc brake system. Fig. 9 is a diagram showing the state of contact between the conventional disc and the brake disc. 10A to 10D are diagrams showing the contact state of the disc and the brake to different angles of the rotation of the wheel.

Claims (8)

A disc brake system is disposed on a locomotive and includes: a shock absorber disposed on a frame; a wheel pivotally mounted on the shock absorber or the frame; a brake caliper, set Having at least two brakes on the suspension device or the frame, each of the brake blades includes a lining plate and a friction material, wherein the friction material is oriented away from the axis of the wheel. The outer edge of the friction material has an arc length, the friction material is adjacent to the axial direction of the wheel, and is an arc inner circumference of the friction material; and a brake disc is disposed on the wheel and located between the at least two brakes The utility model has a plurality of shaped outer edges, so that the friction material can selectively contact with the brake disc to generate a braking effect, wherein an outer arc length of the friction material contacts the brake disc to form a friction track outer edge, which has a friction track outer edge radius, the inner edge arc length of the friction material is in contact with the brake disc to form a friction track inner edge, and has a friction track inner edge radius; and the characteristic is: the circumference of the outer radius of the friction track Long line for this friction The outer edge of the arc length of an integral multiple, and the number of the plurality of shaped outer periphery of the brake disc arrangement according to the times of the entire system. The disc brake system of claim 1, wherein the brake disc further comprises a plurality of heat dissipation holes. For example, the disc brake system of claim 2, wherein the number of the plurality of heat dissipation holes is arranged according to the integral multiple. The disc brake system of claim 1, wherein each of the profiled outer edges is provided with a notch at an outer edge of the brake disc. A disc brake system is disposed on a locomotive and includes: a shock absorber disposed on a frame; a wheel pivotally mounted on the shock absorber or the frame; a brake caliper, set Having at least two brakes on the suspension device or the frame, each of the brake blades includes a lining plate and a friction material, wherein the friction material is oriented away from the axis of the wheel. The outer edge of the friction material has an arc length, the friction material is adjacent to the axial direction of the wheel, and is an arc inner circumference of the friction material; and a brake disc is disposed on the wheel and located between the at least two brakes The utility model has a plurality of shaped outer edges, so that the friction material can selectively contact with the brake disc to generate a braking effect, wherein an outer arc length of the friction material contacts the brake disc to form a friction track outer edge, which has a friction track outer edge radius, the inner edge arc length of the friction material is in contact with the brake disk to form a friction track inner edge, and has a friction track inner edge radius; and the feature is: the area within the outer radius of the friction track Subtract the friction trajectory Radius of the inner edge area of the friction material integral multiple lines for the area, and the number of the plurality of shaped outer periphery of the brake disc according to the integer multiple of the line arrangement. The disc brake system of claim 5, wherein the brake disc further comprises a plurality of heat dissipation holes. The disc brake system of claim 6, wherein the number of the plurality of heat dissipation holes is arranged according to the integral multiple. The disc brake system of claim 5, wherein each of the profiled outer edges is provided with a notch at an outer edge of the brake disc.