Brake pad of pilotless automobile

Abstract

The utility model discloses a pilotless automobile brake pad which comprises a brake caliper, a brake disc is assembled on the inner side of the brake caliper, the inertia flywheel is assembled on the outer side of the brake disc in a rotating mode, and a limiting mechanism is fixedly assembled on the outer side of the brake disc. When the wheel runs, the inertia flywheel and the brake disc rotate synchronously in the same direction, after a brake pad in the brake caliper clamps the outside of the brake disc towards the inner side, the brake disc and the overall periphery of the wheel are decelerated, and the inertia flywheel still rotates in an energy storage mode, so that the cooling effect is improved, the service life of a brake system is prolonged, and the reliability of the brake system is improved. The problems that a brake is frequently used and the potential safety hazard of a brake disc is large due to the fact that an existing driverless automobile cannot achieve a slow speed reduction scheme the same as that of people during braking are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of driverless vehicles, in particular to a brake pad for a driverless vehicle. Background Art

[0002] Self-driving cars, also known as driverless cars, computer-driven cars, or wheeled mobile robots, are intelligent cars that are unmanned by computer systems. They have been around for decades in the 20th century and are approaching practical use in the early 21st century.

[0003] Self-driving cars rely on artificial intelligence, visual computing, radar, monitoring devices and global positioning systems to work together, allowing computers to automatically and safely operate motor vehicles without any active human operation.

[0004] Due to the limitations of the unmanned driving control system and in order to ensure driving safety, after judging the road conditions ahead and performing braking operations, under most road conditions, the driver will judge the movement intentions of moving targets such as pedestrians and wheels in front in advance, intervene in the vehicle speed in advance, and brake and slow down in advance before reaching the decision-making position, and finally choose whether to brake completely to a stop. The unmanned driving control system cannot perform the intermittent deceleration operation of the driver while driving. Most operations will choose the safest braking distance and brake directly. Most operations are emergency braking to avoid unmanned driving collisions.

[0005] Therefore, the brake system of the driverless car is used very frequently, or the high wear condition of the brake system often occurs, which will affect the service life of the brake and cause safety hazards when the driverless car is driving. In view of the above problems, a brake pad for an driverless car is specially proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a brake pad for an unmanned vehicle to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brake pad for an unmanned vehicle, comprising a brake caliper, the inner side of which is equipped with a brake disc, the outer side of which is rotatably equipped with an inertia flywheel, and the outer side of which is fixedly equipped with a limiting mechanism;

[0008] The brake caliper comprises a caliper housing, the inner wall of which is equipped with a brake pad, and the brake pad corresponds to the outer side of the brake disc;

[0009] The brake pad includes a bottom base layer, the top of the base layer is compositely formed with a friction layer for decelerating by friction with a brake disc, a fixing groove is opened inside the base layer, a conductive block and a spare conductive strip are assembled inside the fixing groove, gaps are reserved between adjacent conductive blocks and spare conductive strips, and the backs of two adjacent conductive blocks and spare conductive strips pass through the brake caliper and are electrically connected to the vehicle-mounted detector through wires.

[0010] Preferably, the brake disc comprises a first disc and a second disc, an air guide piece is integrally formed between the first disc and the second disc, and the inner sides of the first disc and the second disc are hollow structures;

[0011] The inertia flywheel comprises a bearing, the outer wall of the bearing is equipped with a connecting disk, the outermost side of the connecting disk is welded with a weight ring, and the inner ring of the bearing is assembled on the outer wall of the outermost fixed disk of the brake disk;

[0012] The limiting mechanism comprises a gear plate and a latching tooth, wherein the latching tooth is rotatably mounted on the outer wall of the connecting plate, and the gear plate is fixedly assembled on the outer wall of the fixing plate;

[0013] The inner side of the counterweight ring is equipped with a heat sink.

[0014] Preferably, a fixed hub is welded to the outer side of the first disk, a reinforcement tube is welded to the axis of the fixed hub, and the reinforcement tube is fixedly assembled with the fixed disk.

[0015] Preferably, reinforcement ribs are uniformly welded between the outer wall of the reinforcement tube and the second plate.

[0016] Preferably, a mounting groove is provided on the outer side of the connecting plate.

[0017] Preferably, a fixing seat is installed outside the latching tooth, and a spring is installed between the latching tooth and the fixing seat.

[0018] Preferably, the gear plate and the latch teeth are ratchet structures, and the free rotation direction of the gear plate is the same as the rotation direction of the wheel.

[0019] Preferably, a mounting hole capable of cooperating with a tire fixing screw is formed on the periphery of the center of the fixing hub, the fixing plate and the gear plate.

[0020] Preferably, the welding position of the reinforcing rib does not coincide with the position of the mounting holes on the outer sides of the fixing hub and the fixing disk.

[0021] Under the condition of 100-350° C., the stretched length of the conductive block and the spare conductive strip stretched by friction is multiplied by 75%, and the obtained width value is the reserved gap width value of the conductive block and the spare conductive strip.

[0022] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a brake for an unmanned vehicle with an inertia flywheel, when the wheel is running, the inertia flywheel and the brake disc rotate synchronously in the same direction, when the brake pad inside the brake caliper is clamped inwardly on the outside of the brake disc, the brake disc and the overall peripheral part of the wheel are decelerated, and the inertia flywheel is still rotating to store energy, so after the gear disc at the center is stationary, the inertia flywheel is still rotating, so the clamping teeth will pop off the outside of the gear disc and continue to rotate, so that when braking, the heat sink rotates normally to drive the airflow on one side of the second disc to move outward, thereby improving the cooling effect, improving the service life and reliability of the braking system, and effectively solving the problem that after the existing brake pad is used up, if it is not timely inspected and repaired, it is impossible to know whether the brake pad is too thin, etc., resulting in the problem that it is impossible to intuitively determine whether the brake is safe, and also solves the problem that the existing unmanned vehicle cannot achieve the same slow-down and deceleration scheme as humans when braking, resulting in frequent use of the brake, and the insufficient heat dissipation capacity of the brake disc caused by frequent emergency braking, which easily causes safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model.

[0024] Figure 2 This is a schematic diagram of the assembly of the brake caliper structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the brake pad structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the disassembly of the brake pad structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the disassembly and assembly of the brake pad structure of the utility model.

[0028] Figure 6 It is a schematic diagram of the assembly of the limiting mechanism of the utility model.

[0029] Figure 7 for Figure 6 A magnified schematic diagram of the structure at point a.

[0030] Figure 8 This is a schematic diagram of the cutaway structure of the brake disc of the utility model.

[0031] Fig. 9 It is a schematic diagram of the overall structure of the utility model when assembled from a reverse perspective.

[0032] Fig.10 It is a schematic diagram of the inertia flywheel structure of the utility model.

[0033] In the figure: 1. brake caliper, 11. caliper housing, 12. brake pad, 13. base layer, 14. friction layer, 15. fixing groove, 16. conductive block, 17. spare conductive strip, 2. brake disc, 21. fixed hub, 22. first disc, 23. air guide plate, 24. second disc, 25. reinforcement tube, 26. reinforcement rib, 27. fixed disc, 3. inertia flywheel, 31. bearing, 32. connecting disc, 33. counterweight ring, 34. heat sink, 35. mounting groove, 4. limiting mechanism, 41. gear disc, 42. fixing seat, 43. tooth. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figure 1-10 The utility model provides a technical solution: a brake pad for an unmanned vehicle, comprising a brake caliper 1, a brake disc 2 is mounted on the inner side of the brake caliper 1, an inertia flywheel 3 is rotatably mounted on the outer side of the brake disc 2, and a limiting mechanism 4 is fixedly mounted on the outer side of the brake disc 2;

[0036] The brake disc 2 includes a first disc 22 and a second disc 24, an air guide piece 23 is integrally formed between the first disc 22 and the second disc 24, and the inner sides of the first disc 22 and the second disc 24 are hollow structures;

[0037] The inertia flywheel 3 includes a bearing 31, the outer wall of the bearing 31 is equipped with a connecting plate 32, the outermost side of the connecting plate 32 is welded with a weight ring 33, and the inner ring of the bearing 31 is assembled on the outer wall of the outermost fixed plate 27 of the brake disc 2;

[0038] The limiting mechanism 4 includes a gear plate 41 and a latching tooth 43. The latching tooth 43 is rotatably mounted on the outer wall of the connecting plate 32, and the gear plate 41 is fixedly assembled with the outer wall of the fixing plate 27.

[0039] The inside of the weight ring 33 is equipped with a heat sink 34 .

[0040] The brake caliper 1 comprises a caliper housing 11, the inner wall of which is provided with a brake pad 12, and the brake pad 12 corresponds to the outer side of the brake disc 2;

[0041] The brake pad 12 includes a bottom base layer 13, the top of the base layer 13 is compositely molded with a friction layer 14 for frictionally decelerating with the brake disc 2, a fixing groove 15 is opened inside the base layer 13, and a conductive block 16 and a spare conductive strip 17 are assembled inside the fixing groove 15. A gap is reserved between adjacent conductive blocks 16 and spare conductive strips 17, and the backs of two adjacent conductive blocks 16 and spare conductive strips 17 pass through the brake caliper 1 and are electrically connected to the vehicle-mounted detector through a wire.

[0042] Under the condition of 100-350° C., the stretched length of the conductive block 16 and the spare conductive strip 17 due to friction is multiplied by 75%, and the obtained width value is the reserved gap width value of the conductive block 16 and the spare conductive strip 17 .

[0043] The brake pad 12 is driven by a driving rod inside the caliper housing 11, and can drive the brake pad 12 to move inward, so as to be clamped on the outside of the brake disc 2 to achieve braking action. During the braking action, the brake pad 12 rubs against the brake disc 2, and the fixed brake caliper 1 is used to rub the brake disc 2 to achieve the purpose of stopping rotation. When the friction layer 14 on the outside of the brake pad 12 is worn out, the brake disc 2 contacts the conductive block 16 or spare conductive strip 17 exposed inside the base layer 13, and its surface can be heated. Affected by the characteristics of the conductive material, the outer surfaces of the conductive block 16 and the spare conductive block 17 are extended by friction heating, and the extension and stretching are passively extended in the running direction, resulting in the two adjacent conductive blocks 16 or spare conductive strips 17 being connected externally, and the circuit is energized to remind the brake pad 12 that it should be replaced.

[0044] Moreover, the practical conductive block 16 is in a square shape, and the spare conductive block 17 is in a gate shape. In addition to being a spare part for connecting the conductive effect, the spare conductive block 17 also serves as a structural component for increasing the strength of the brake pad.

[0045] When the conductive block 16 or the conductive block 16 is not connected, the spare conductive block 17 with a larger area is connected after the outer surface is deformed by friction, and the circuit will be connected. After the sensor in the vehicle obtains data, it can be intuitively seen that the vehicle brake pads should be replaced.

[0046] The utility model provides a brake for an unmanned vehicle with an inertia flywheel 3. When the wheel is running, the inertia flywheel 3 rotates synchronously with the brake disc 2 in the same direction. After the brake pad inside the brake caliper 1 is clamped inwardly on the outside of the brake disc 2, the brake disc 2 and the overall peripheral part of the wheel are decelerated, and the inertia flywheel 3 is still rotating for energy storage. Therefore, after the gear disc 41 at the center is stationary, the inertia flywheel 3 is still rotating. Therefore, the latching teeth 43 will be ejected on the outside of the gear disc 41 and continue to rotate. Therefore, when braking, the heat sink 34 rotates normally to drive the airflow on one side of the second disc 24 to move outward, thereby improving the cooling effect, improving the service life and reliability of the braking system, and effectively solving the problem that the existing unmanned vehicle cannot achieve the same slow-down and deceleration scheme as humans when braking, which is caused by frequent use of the brake, and the insufficient heat dissipation capacity of the brake disc 2 caused by frequent emergency braking, which is easy to cause safety hazards.

[0047] Specifically, a fixed hub 21 is welded to the outer side of the first disc 22, and a reinforcement tube 25 is welded at the axis of the fixed hub 21. The reinforcement tube 25 is fixedly assembled with the fixed disc 27. The fixed hub 21 and the outer shaft of the wheel are connected and fixed to each other, which is the same as the existing brake disc structure. The reinforcement tube 25 and the fixed disc 27 are relatively fixedly assembled with the wheel.

[0048] Specifically, reinforcement ribs 26 are evenly welded between the outer wall of the reinforcement tube 25 and the second plate 24. The reinforcement ribs 26 are used to improve the structural strength between the fixed plate 27, the fixed hub 21 and the second plate 24, and provide stable structural strength support for the inertial flywheel 3 when in use.

[0049] Specifically, a mounting groove 35 is opened on the outer side of the connecting plate 32, and the thickness of the mounting groove 332 is the same as the bottom thickness of the female work 42, which is convenient for assembling the fixing seat 42.

[0050] Specifically, a fixing seat 42 is installed on the outside of the latch 43, and a spring is installed between the latch 43 and the fixing seat 42. The fixing seat 42, the latch 43 and the spring structure are an integrated assembly structure, which is modularly distributed and installed inside the installation slot 35, which is convenient for replacement and maintenance, and also convenient for increase according to the number of uses.

[0051] Specifically, the gear plate 41 and the latch teeth 43 are ratchet structures, and the free rotation direction of the gear plate 41 is the same as the rotation direction of the wheel. Figure 3As shown, when the gear plate 41 is located on the right side, in the right-side viewing angle, when the wheel rotates clockwise, the gear plate 41 pushes the latching tooth 43 to rotate clockwise, so the inertial flywheel 3 driven by the latching tooth module will rotate around the bearing 31. At this time, the inertial flywheel 3 and all the structures and wheels of the utility model rotate at the same angular velocity. When the brake disc 2 brakes, that is, the brake disc 2 as a whole and the gear plate 41 slow down or stop instantly, and the connecting disc 32 continues to rotate at an angular velocity close to that before braking under the action of the counterweight ring 33, and still keeps running clockwise, so the clockwise rotation is stable. The needle-operated connecting disk 32 will drive the latching teeth 43 to move clockwise and jump on the outside of the gear disk 41. Therefore, when the brake disk 2 is in all deceleration or stationary actions after braking or coming to a standstill, the heat sink 34 can draw the air between the second disk 24 and the inner side of the connecting disk 32 to the outside, thereby utilizing the cavity formed between the first disk 22 and the second disk 24 and the air guide plate 23 to form a state where air is drawn out at the axis, thereby timely cooling the brake disk 2 after the wheel is braked or comes to a standstill, and improving the cooling efficiency, the braking efficiency, the service life of the brake system, and the number of repairs and maintenance.

[0052] Furthermore, the sharp teeth of the gear plate 41 are in the same direction as the rotation direction of the wheel, and need to be symmetrically arranged when arranged on the left and right sides.

[0053] Specifically, mounting holes that can cooperate with the tire fixing screws are opened on the periphery of the center of the fixing hub 21, the fixing plate 27 and the gear plate 41. The mounting hole structure is used to assemble the overall structure of the utility model with the outer shaft of the wheel. The number of mounting holes needs to be determined according to the number of tire fixing screws.

[0054] Specifically, the welding position of the reinforcing rib 26 does not overlap with the position of the mounting holes on the outside of the fixing hub 21 and the fixing plate 27, so as to ensure that the reinforcing rib 26 provides supporting strength without affecting the assembly with the tire screw.

[0055] The thickness of the middle part of the air guide piece 23 is smaller than the thickness of the two sides of the air guide piece 23. Figure 3 The airflow is cut and the arc surface is used to accelerate the airflow, so that the external airflow moves to the inside of the air guide plate 23. When the brake is cooled, the air enters from the outside and passes through the outer wall of the reinforcement tube 25, passes through the gap of the reinforcement rib 26, and is dispersed to the outside after being disturbed by the heat sink 34.

[0056] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A brake pad for an unmanned vehicle, comprising a brake caliper (1), characterized in that: The inner side of the brake caliper (1) is equipped with a brake disc (2), the outer side of the brake disc (2) is rotatably equipped with an inertia flywheel (3), and the outer side of the brake disc (2) is fixedly equipped with a limiting mechanism (4); The brake caliper (1) comprises a caliper housing (11), the inner wall of the caliper housing (11) is equipped with a brake pad (12), and the brake pad (12) corresponds to the outer side of the brake disc (2); The brake pad (12) comprises a bottom base layer (13), the top of the base layer (13) is compositely formed with a friction layer (14) for frictionally reducing speed with a brake disc (2), a fixing groove (15) is provided inside the base layer (13), a conductive block (16) and a spare conductive strip (17) are installed inside the fixing groove (15), a gap is reserved between adjacent conductive blocks (16) and spare conductive strips (17), and the backs of two adjacent conductive blocks (16) and spare conductive strips (17) pass through the brake caliper (1) and are electrically connected to a vehicle-mounted detector through a wire.

2. The brake pad for an unmanned vehicle according to claim 1, characterized in that: The brake disc (2) comprises a first disc (22) and a second disc (24); an air guide plate (23) is integrally formed between the first disc (22) and the second disc (24); and the inner sides of the first disc (22) and the second disc (24) are hollow structures; The inertia flywheel (3) comprises a bearing (31), the outer wall of the bearing (31) is equipped with a connecting disk (32), the outermost side of the connecting disk (32) is welded with a weight ring (33), and the inner ring of the bearing (31) is assembled on the outer wall of the outermost fixed disk (27) of the brake disk (2); The limiting mechanism (4) comprises a gear plate (41) and a latching tooth (43), wherein the latching tooth (43) is rotatably mounted on the outer wall of the connecting plate (32), and the gear plate (41) is fixedly assembled with the outer wall of the fixing plate (27); The inner side of the counterweight ring (33) is equipped with a heat sink (34).

3. The brake pad for an unmanned vehicle according to claim 2, characterized in that: Reinforcement ribs (26) are uniformly welded between the outer wall of the reinforcement tube (25) and the second plate (24).

4. The brake pad for an unmanned vehicle according to claim 2, characterized in that: The outer side of the connection plate (32) is provided with a mounting groove (35).

5. The brake pad for an unmanned vehicle according to claim 3, characterized in that: A fixed hub (21) is welded to the outer side of the first disk (22), a reinforcement tube (25) is welded to the axis of the fixed hub (21), and the reinforcement tube (25) is fixedly assembled with the fixed disk (27).

6. The brake pad for an unmanned vehicle according to claim 1, characterized in that: Under the condition of 100-350° C., the stretched length of the conductive block (16) and the spare conductive strip (17) stretched by friction is multiplied by 75%, and the width value obtained is the reserved gap width value of the conductive block (16) and the spare conductive strip (17).

7. The brake pad for an unmanned vehicle according to claim 2, characterized in that: The outside of the latching tooth (43) is equipped with a fixing seat (42), and a spring is installed between the latching tooth (43) and the fixing seat (42).

8. The brake pad for an unmanned vehicle according to claim 4 or 7, characterized in that: The gear plate (41) and the latching teeth (43) are ratchet structures, and the free rotation direction of the gear plate (41) is the same as the rotation direction of the wheel.

9. The brake pad for an unmanned vehicle according to claim 5, characterized in that: The fixing hub (21), the fixing plate (27) and the gear plate (41) are provided with mounting holes at the periphery of the center thereof, which can be matched with the tire fixing screw rod.

10. The brake pad for an unmanned vehicle according to claim 5, characterized in that: The welding position of the reinforcing rib (26) does not coincide with the position of the mounting holes on the outside of the fixing hub (21) and the fixing plate (27).

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