Brake disc, brake assembly and vehicle

Abstract

The embodiment of the utility model provides a brake disc, a brake assembly and a vehicle. The brake disc comprises a first disc body; the second disc body and the first disc body are opposite in the axial direction of the brake disc and are arranged in a spaced mode, and the first disc body and the second disc body jointly define an annular cavity; the multiple guide vanes are distributed in the annular cavity in the circumferential direction of the brake disc at intervals and connected with at least one of the first disc body and the second disc body, the multiple guide vanes divide the annular cavity into multiple guide channels, and the guide channels penetrate through the radial outer end and the radial inner end of the annular cavity. According to the brake disc, in the braking process, the brake disc rotates, air enters from the radial outer end of the flow guide channel and is exhausted from the radial outer end after passing through the flow guide channel, the contact area between the brake disc and the brake disc is large, the heat exchange efficiency is high, the heat dissipation effect of the brake disc is improved, the service life of the brake disc is prolonged, and the safety of a vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle braking equipment, in particular to a brake disc, a brake assembly and a vehicle. BACKGROUND

[0002] In a modern automobile braking system, the brake disc, as one of the key components, works together with the brake caliper and brake pads to achieve the control of deceleration and parking of the vehicle. When the driver steps on the brake pedal, friction braking occurs between the brake disc and the brake pads, converting the kinetic energy of the vehicle into heat energy.

[0003] The heat resistance of the brake disc directly affects the driving safety and stability of the vehicle. In the prior art, the heat dissipation effect of the brake disc is improved by opening heat dissipation holes or heat dissipation grooves on the brake disc. However, opening heat dissipation holes or heat dissipation grooves on the brake disc will cause the structural strength of the brake disc to decrease. Especially for large commercial vehicles, when encountering a long downhill section and needing to step on the brake for a long time, the brake disc with insufficient structural strength may cause brake failure. CONTENT OF THE INVENTION

[0004] The embodiments of the present application provide a brake disc, a brake assembly and a vehicle, which can improve the heat dissipation effect of the brake disc while ensuring sufficient structural strength of the brake disc, thereby improving the safety during vehicle driving.

[0005] In a first aspect, the embodiments of the present application provide a brake disc, comprising: a first disc body; a second disc body arranged opposite to and spaced from the first disc body along the axial direction of the brake disc, the first disc body and the second disc body jointly defining a ring cavity; a plurality of guide vanes spaced and distributed in the circumferential direction of the brake disc in the ring cavity and connected with at least one of the first disc body and the second disc body, the plurality of guide vanes separating the ring cavity into a plurality of guide channels, the guide channels penetrating through the radial outer end and the radial inner end of the ring cavity.

[0006] The brake disc of the present application forms a double-layer structure through the first disc body and the second disc body, effectively ensuring the structural strength of the brake disc, and separates the ring cavity between the first disc body and the second disc body into a plurality of penetrating guide channels through the guide vanes. During braking, the brake disc rotates, air enters from the radial outer end of the guide channel, is discharged from the radial outer end after passing through the guide channel, has a large contact area with the brake disc, has high heat exchange efficiency, is conducive to improving the heat dissipation effect of the brake disc, prolonging the service life of the brake disc, and improving the safety of the vehicle.

[0007] In some embodiments, the guide vanes have first ends extending to the radially inner edges of the first disc body and second ends extending to the radially outer edges of the first disc body, the distance between the first ends of two adjacent guide vanes is equal, and the distance between the second ends of two adjacent guide vanes is equal. In this way, the guide channels formed by the guide vanes can be uniformly distributed in the annular cavity, so that air can enter the annular cavity uniformly, the heat dissipation effect of the brake disc at each position is uniform, and the situation of local overheating is avoided, thereby prolonging the service life of the brake disc.

[0008] In some embodiments, the first end and the second end of each guide vane are opposite in the radial direction of the brake disc. In this way, the air entering the annular cavity can flow more effectively from the outer edge of the brake disc to the inner edge, thereby taking away the heat generated during braking and improving the overall heat dissipation performance.

[0009] According to some embodiments of the present application, the guide vanes extend in a straight line. The structure design of the guide vanes extending in a straight line is conducive to making the airflow flow in the direction of the vanes with minimal resistance, reducing vortex and flow separation phenomena, and improving the efficiency of air flow, thereby improving the heat dissipation efficiency.

[0010] According to some embodiments of the present application, the guide vanes extend in an arc shape. Each guide vane extends in an arc shape from the radially inner edge to the radially outer edge of the brake disc. In this way, the airflow is guided to flow along a curved path, reducing the flow resistance and vortex phenomenon of the airflow. When the brake disc rotates at high speed, the curved flow path is conducive to improving the efficiency of air flow and improving the heat dissipation effect.

[0011] According to some embodiments of the present application, the guide vanes include a first guide section and a second guide section distributed in the radial direction of the brake disc from inside to outside,

[0012] In some embodiments, one of the first guide section and the second guide section is curved in the clockwise direction, and the other is curved in the counterclockwise direction. In this way, the surface area of the guide vanes in contact with the airflow for heat exchange can be increased, so that the air stays in the guide channel for a longer time, increasing the transfer and dissipation of heat, and facilitating more effective removal of heat from the brake disc during braking. At the same time, the curved structure design of the guide vanes can make the rotational motion of the airflow generate centrifugal force and airflow inertia, more effectively push the air flow, and enhance the heat dissipation effect.

[0013] In some embodiments, each of the flow guide channels has an air inlet at a radially outer end of the brake disc, and the opening direction of the air inlet forms an angle with the radial direction of the brake disc. By designing the opening direction of the air inlet to form an angle with the radial direction of the brake disc, the airflow can enter the flow guide channel more smoothly, which is conducive to reducing the resistance when the airflow enters and improving the efficiency of air flow. During the process of brake braking, the brake disc rotates, and the angle design can utilize the relative wind speed when the vehicle is running to increase the kinetic energy of the airflow entering the flow guide channel, so that the airflow can enter the flow guide channel with higher speed and larger volume, thereby enhancing the heat exchange efficiency between the air and the surface of the brake disc, and improving the heat dissipation performance.

[0014] According to some embodiments of the present application, the flow guide vane is integrally formed with at least one of the first disc body and the second disc body. The integrally formed structure eliminates the connection interface between the vane and the disc body, reduces potential weak points and failure points, and thus improves the strength and durability of the overall structure of the brake disc. The integrally formed structure helps to more evenly distribute and conduct heat, enhances the heat dissipation performance, and is conducive to improving the stability of the brake disc under high load conditions. In addition, the integrally formed manufacturing process is simple, reduces the assembly steps and assembly time of the brake disc, reduces the production cost, and improves the production efficiency.

[0015] In a second aspect, the embodiments of the present application also provide a brake assembly, comprising:

[0016] The brake disc described above;

[0017] The mounting bracket extends along the circumference of the brake disc;

[0018] The two brake calipers are arranged on the two axial sides of the brake disc, and are adapted to clamp the brake disc or separate from the brake disc;

[0019] The brake pad is arranged on the side surface of the brake caliper facing the brake disc.

[0020] The brake assembly of the present application, due to the use of the above-mentioned brake disc, when the driver steps on the brake, the brake caliper drives the brake pad to tightly hold the brake disc for braking, a large amount of heat is generated by the brake disc, the airflow passes through the flow guide channel in the brake disc and exchanges heat with the brake disc, so that the heat dissipation efficiency of the brake disc is high, the brake braking effect is good, and the safety of the vehicle is improved.

[0021] In a third aspect, the embodiments of the present application also provide a vehicle, comprising the above-mentioned brake assembly.

[0022] The utility model discloses a vehicle, because used above -mentioned brake assembly, when braking, the heat dissipation effect of brake assembly is good, make the braking effect of brake assembly more reliable, be favorable to the driving safety of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings incorporated herein in and forming a part of the specification, illustrate embodiments consistent with the present application and together with the description serve to explain the principles of the application.

[0024] Figure 1 It is the structural schematic diagram of brake disc of the embodiment of the application;

[0025] Figure 2 It is the distribution structure schematic diagram of guide vane of the embodiment of the application;

[0026] Figure 3 It is the structural schematic diagram of brake assembly of the embodiment of the application.

[0027] Reference Signs:

[0028] 100 - brake disc;

[0029] 110 - first disc body;

[0030] 120 - second disc body;

[0031] 130 - guide vane; 131 - first end; 132 - second end; 133 - first guide section; 134 - second guide section;

[0032] 140 - guide channel; 141 - air inlet;

[0033] 200 - brake assembly;

[0034] 210 - mounting bracket;

[0035] 220 - brake caliper;

[0036] 230 - brake pad.

[0037] Through the above-mentioned drawing, the definite embodiment of the application has been shown, and there will be more detailed description in the following. These drawings and textual descriptions are not for limiting the scope of the concept of the application by any way, but by referring to specific embodiments for the person skilled in the art to explain the concept of the application. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below with reference to the accompanying drawings, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0039] In the prior art, the heat dissipation effect of the brake disc is improved by opening heat dissipation holes or grooves on the brake disc. However, opening heat dissipation holes or grooves on the brake disc will cause the structural strength of the brake disc to decrease. Especially for large commercial vehicles, when encountering a long downhill section and needing to step on the brake for a long time, the brake disc with insufficient structural strength may cause the brake to fail.

[0040] Therefore, the embodiments of the present application provide a brake disc, a brake assembly and a vehicle, which can improve the heat dissipation effect of the brake disc while ensuring that the brake disc has sufficient structural strength, thereby improving the safety during vehicle driving.

[0041] Reference Figure 1 and Figure 2 In a first aspect, the embodiments of the present application provide a brake disc 100, which can include a first disc body 110, a second disc body 120 and a plurality of guide vanes 130.

[0042] The second disc body 120 is arranged opposite to and spaced from the first disc body 110 along the axial direction of the brake disc 100, forming a double-layer structure to improve the structural strength of the brake disc 100. The first disc body 110 and the second disc body 120 jointly define an annular cavity, which not only provides mounting space for the guide vanes 130, but also improves the contact area between the brake disc 100 and the air, thereby improving the heat dissipation efficiency.

[0043] The plurality of guide vanes 130 are spaced and distributed along the circumferential direction of the brake disc 100 in the annular cavity and connected with at least one of the first disc body 110 and the second disc body 120. For example, the guide vanes 130 can be connected with the first disc body 110, or the guide vanes 130 can be connected with the second disc body 120, or the guide vanes 130 can be connected with both the first disc body 110 and the second disc body 120, so as to improve the stability of the overall structure of the brake disc 100 and make the heat generated during braking evenly distributed on the brake disc 100, thereby improving the heat dissipation effect.

[0044] The plurality of guide vanes 130 divide the annular cavity into a plurality of guide channels 140, and the guide channels 140 pass through the radially outer end and the radially inner end of the annular cavity. In this way, air can enter from the radially outer end, flow to the radially inner end through the guide channels 140, and carry away the heat on the brake disc 100 during braking.

[0045] The utility model discloses a brake disc 100 forms double -deck structure through first disc body 110 and second disc body 120, effectively guaranteed the structural strength of brake disc 100, through the ring cavity between first disc body 110 and second disc body 120 is divided into multiple through -going flow guide channel 140 with flow guide vane 130, in the process of braking, brake disc 100 rotates, and air enters from the radial outer end of flow guide channel 140, and after passing through flow guide channel 140, it is discharged from the radial outer end, and the contact area between with brake disc 100 is big, and heat exchange efficiency is high, is favorable for improving the heat dissipation effect of brake disc 100, prolongs the service life of brake disc 100, and the security of vehicle has been improved.

[0046] In some embodiments, the flow guide vanes 130 have first ends 131 extending to the radial inner edges of the first disc body 110 and second ends 132 extending to the radial outer edges of the first disc body 110. The first ends 131 of adjacent two flow guide vanes 130 have equal spacing, forming uniform air inlet at the radial inner edges, ensuring uniform distribution of air flow into the flow guide channels 140. Meanwhile, the second ends 132 of adjacent two flow guide vanes 130 have equal spacing, forming uniform air outlet at the radial outer edges, optimizing the air flow path and improving the heat exchange efficiency.

[0047] In this way, the flow guide channels formed by the flow guide vanes 130 can be evenly distributed in the ring cavity, so that air can enter the ring cavity uniformly, making the heat dissipation effect of brake disc 100 uniform everywhere, avoiding local overheating, and prolonging the service life of brake disc 100.

[0048] In some embodiments, the first ends 131 and the second ends 132 of each flow guide vane 130 are opposite along the radial direction of the brake disc 100. In this way, the air entering the ring cavity can flow more effectively from the outer edge to the inner edge of the brake disc 100, carrying away the heat generated during braking, and improving the overall heat dissipation performance.

[0049] According to some embodiments of the utility model, the flow guide vanes 130 extend in a straight line. The straight-line extension of the flow guide vanes 130 facilitates the air flow in the direction of the vanes with minimal resistance, reducing vortex and flow separation phenomena, and improving the efficiency of air flow, thereby improving the heat dissipation efficiency. Moreover, the straight-line design of the flow guide vanes 130 is relatively simple, making manufacturing and assembly more convenient, and facilitating the improvement of production efficiency.

[0050] According to some embodiments of the utility model, the flow guide vanes 130 extend in an arc shape. Each flow guide vane 130 extends in an arc shape from the radial inner edge to the radial outer edge of the brake disc 100. In this way, the air flow is guided to flow along a curved path, reducing the flow resistance and vortex phenomenon of the air flow. When the brake disc 100 rotates at high speed, the curved flow path facilitates the improvement of the efficiency of air flow and the improvement of the heat dissipation effect.

[0051] According to some embodiments of the present application, the guide vane 130 comprises a first guide section 133 and a second guide section 134 distributed in turn along the radial direction of the brake disc 100 from inside to outside, wherein one of the first guide section 133 and the second guide section 134 is curved in the clockwise direction, and the other is curved in the counterclockwise direction. Exemplarily, the first guide section 133 can be curved in the clockwise direction, and the second guide section 134 is curved in the counterclockwise direction, or the first guide section 133 can be curved in the counterclockwise direction, and the second guide section 134 is curved in the clockwise direction.

[0052] In this way, the surface area of the guide vane 130 in contact with the airflow for heat exchange can be increased, so that the air stays in the guide channel 140 for a longer time, increasing the heat transfer and dissipation rate, and facilitating more effective heat dissipation of the brake disc 100 during braking. At the same time, the curved structure design of the guide vane 130 can generate centrifugal force and airflow inertia due to the rotational motion of the airflow, more effectively pushing the air flow, and enhancing the heat dissipation effect.

[0053] In some embodiments, each guide channel 140 has an air inlet 141 located at the radial outer end of the brake disc 100, and the opening direction of the air inlet 141 forms an angle with the radial direction of the brake disc 100. By designing the opening direction of the air inlet 141 to form an angle with the radial direction of the brake disc 100, the airflow can enter the guide channel 140 more smoothly, which is beneficial to reduce the resistance when the airflow enters, and improve the efficiency of air flow. During braking, the brake disc 100 rotates, and the angle design can utilize the relative wind speed during vehicle driving to increase the kinetic energy of the airflow entering the guide channel 140, so that the airflow can enter the guide channel 140 at a higher speed and larger volume, enhancing the heat exchange efficiency between the air and the surface of the brake disc 100, thereby improving the heat dissipation performance.

[0054] According to some embodiments of the present application, the guide vane 130 is integrally formed with at least one of the first disc body 110 and the second disc body 120. Exemplarily, the guide vane 130 can be integrally formed with the first disc body 110, or the guide vane 130 can also be integrally formed with the second disc body 120, of course, the guide vane 130 can be integrally formed with the first disc body 110 and the second disc body 120 at the same time.

[0055] Therefore, the one-piece structure design eliminates the connection interface between the blade and the disc body, reduces potential weak points and failure points, and improves the strength and durability of the overall structure of the brake disc 100. The one-piece structure helps to more evenly distribute and conduct heat, enhances heat dissipation performance, and helps to improve the stability of the brake disc 100 under high load conditions. In addition, the one-piece manufacturing process is simple, reduces the assembly steps and assembly time of the brake disc 100, reduces production costs, and improves production efficiency.

[0056] Reference Figure 3 In a second aspect, the embodiments of the present application also provide a brake assembly 200, which can include the above-mentioned brake disc 100, a mounting bracket 210, two brake calipers 220, and brake pads 230.

[0057] The mounting bracket 210 extends along the circumference of the brake disc 100 to provide stable support and fixing effect for the brake assembly 200. The two brake calipers 220 are arranged on the mounting bracket 210 and are located on the axial sides of the brake disc 100. During braking, the brake calipers 220 clamp the brake disc 100, and during parking or normal driving, the brake calipers 220 are separated from the brake disc 100.

[0058] The brake pads 230 are arranged on the side surface of the brake calipers 220 facing the brake disc 100. During braking, the brake pads 230 directly contact the brake disc 100 to achieve vehicle deceleration and stopping through friction.

[0059] The brake assembly 200 of the utility model, since using above-mentioned brake disc 100, when driver steps on brake, brake caliper 220 drives brake pad 230 to tightly hold brake disc 100 and brakes, brake disc 100 generates a large amount of heat, airflow passes through flow guide passage 140 in brake disc 100 and exchanges heat with brake disc 100, so that the heat dissipation efficiency of brake disc 100 is high, and the brake braking effect is good, which is conducive to improving the safety of vehicle.

[0060] In a third aspect, the embodiments of the present application also provide a vehicle, which includes the above-mentioned brake assembly 200.

[0061] The vehicle of the utility model, since using above-mentioned brake assembly 200, the heat dissipation effect of brake assembly 200 is good when braking, so that the braking effect of brake assembly 200 is more reliable, which is conducive to improving the driving safety of vehicle.

[0062] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0063] In the description of the utility model, "first feature" and "second feature" can include one or more features.

[0064] In the description of the utility model, "multiple" means two or more.

[0065] In the description of the utility model, "above", "over" and "on" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0066] In the description of the utility model, "above", "over" and "on" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature.

[0067] In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the description of the utility model, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

[0069] It should be understood that many variations can be made in the embodiments described and shown which should be considered within the scope of the present application as defined by the appended claims. It is therefore contemplated to cover any and all modifications, variations, or equivalents that fall within the scope of the present application. It is intended that the scope of the present application shall not be limited to the particular examples disclosed but shall include any and every application that falls within the scope of the appended claims.

Claims

1. A brake disc (100), characterized in that Comprising: a first disc body (110); a second disc body (120) oppositely and spacedly arranged with the first disc body (110) along an axial direction of the brake disc (100), the first disc body (110) and the second disc body (120) jointly defining a ring cavity; a plurality of guide vanes (130) spacedly distributed in the ring cavity along a circumferential direction of the brake disc (100) and connected with at least one of the first disc body (110) and the second disc body (120), the plurality of guide vanes (130) separating the ring cavity into a plurality of guide channels (140) penetrating through a radially outer end and a radially inner end of the ring cavity.

2. The brake disc (100) according to claim 1, characterized in that The guide vane (130) has a first end (131) extending to a radially inner edge of the first disc body (110) and a second end (132) extending to a radially outer edge of the first disc body (110), The distance between the first ends (131) of two adjacent guide vanes (130) is equal, The distance between the second ends (132) of two adjacent guide vanes (130) is equal.

3. The brake disc (100) according to claim 2, characterized in that The first end (131) and the second end (132) of each guide vane (130) are opposite along a radial direction of the brake disc (100).

4. The brake disc (100) according to claim 3, characterized in that The guide vane (130) extends linearly.

5. The brake disc (100) according to claim 3, characterized in that The guide vane (130) extends arcuately.

6. The brake disc (100) according to claim 5, characterized in that The guide vane (130) comprises a first guide section (133) and a second guide section (134) sequentially distributed from inside to outside along a radial direction of the brake disc (100), Wherein, one of the first guide section (133) and the second guide section (134) is curved in a clockwise direction, and the other is curved in an anticlockwise direction.

7. The brake disc (100) according to claim 1, characterized in that Each guide channel (140) has an air inlet (141) at a radially outer end of the brake disc (100), and the opening direction of the air inlet (141) has an included angle with the radial direction of the brake disc (100).

8. The brake disc (100) according to claim 1, characterized in that The guide vane (130) is integrally formed with at least one of the first disc body (110) and the second disc body (120).

9. A brake assembly (200) characterized by, Comprising: The brake disc (100) of any one of claims 1-8; a mounting bracket (210) extending along a circumferential direction of the brake disc (100); two brake calipers (220) each provided on the mounting bracket (210) and located on both axial sides of the brake disc (100), the brake calipers (220) being adapted to clamp or separate from the brake disc (100); a brake pad (230) provided on a side surface of the brake caliper (220) facing the brake disc (100).

10. A vehicle characterized by comprising: Comprising: The brake assembly (200) of claim 9.

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