Brake pad with cooling mechanism

Abstract

The invention belongs to the technical field of brake pads, and particularly relates to a brake pad with a cooling mechanism, which comprises calipers and a brake disc matched with the calipers, and a brake pad body is connected in a cavity of the calipers through a back plate; the cooling structure is arranged in the calipers; the cooling structure comprises a frame body fixedly installed on one side of the calipers, one face of the frame body is open, and an air inlet pipe and a connecting pipe which communicate with each other are installed in the frame body; the back plate is actively cooled, the temperature of the back plate can be continuously lower than that of the friction block, a stable temperature difference is formed, the temperature difference can continuously drive heat of the friction block to be transmitted to the back plate, then the heat is taken away from the back plate through a cooling measure, and therefore indirect cooling of the friction block of the brake pad is achieved.

Description

Technical Field

[0001] This invention belongs to the field of brake pad technology, specifically a brake pad with a cooling mechanism. Background Technology

[0002] Brake pads are the core component of a car's braking system, installed inside the brake caliper and in close contact with the brake disc. They generate braking force through friction with the brake disc, causing the vehicle to slow down or stop. Supporting components include the brake disc, brake caliper, brake fluid, and brake pad wear sensors. The brake fluid is responsible for transmitting braking force, while the wear sensors monitor the thickness of the brake pads. These components work together to ensure the safety and reliability of the braking system.

[0003] Existing brake pad cooling methods mainly achieve cooling through material optimization and structural design. They typically use copper-based or ceramic composite materials with good thermal conductivity to quickly conduct frictional heat; or they can create grooves or ventilation holes on the surface of the brake pads to increase the airflow contact area, while also using ventilated brake discs and perforated and scribbled discs to improve heat dissipation efficiency.

[0004] During continuous braking, brake pads experience a continuous temperature rise (reaching 350-600℃). This temperature increase leads to a sharp drop in the coefficient of friction, brake fluid blockage, and accelerated carbonization of the brake pads and thermal cracking of the brake disc. Furthermore, brake pads and calipers are often installed inside a semi-enclosed wheel hub, where space is limited and airflow is restricted. The installation angle is also often inconsistent with the airflow direction of the vehicle and the centrifugal airflow from the brake disc, significantly reducing natural ventilation efficiency and hindering the cooling structure's ability to fully contact the cooling airflow. Even with ventilated discs and fins, obstruction and angular deviations in installation position prevent them from fully utilizing heat dissipation, resulting in inadequate brake pad cooling and consequently affecting braking stability. Therefore, the present invention provides a brake pad with a cooling mechanism. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: A brake pad with a cooling mechanism, comprising a caliper and a brake disc adapted to the caliper, wherein a brake pad body is connected to the cavity of the caliper via a back plate; further comprising a cooling structure disposed within the caliper; the cooling structure comprising a frame fixedly installed on one side of the caliper, one side of the frame being open, and an air inlet pipe and a connecting pipe connected to each other installed inside the frame, wherein two air guide pipes connected to the interior are fixedly installed on the surface of the connecting pipe, and the ends of the two air guide pipes away from the connecting pipe are respectively connected to the interior of two cavities; a hollow fixed pipe connected to the interior of the air guide pipe is installed on the back plate of the cavity, and a plurality of connecting holes are opened on the surface of the back plate, and a plurality of hollow pipes connected to the connecting holes on the back plate are fixedly installed on the surface of the fixed pipe; two return plates are fixedly installed inside the connecting pipe, and both return plates are fixedly installed near the air guide pipe.

[0007] Furthermore, a guiding mechanism is provided inside the fixed tube. The guiding mechanism includes several guide plates fixedly installed inside the fixed tube. Several guide holes are opened on the surface of the guide plates. The guide holes on the several guide plates are of different sizes, with the guide holes near the air duct being larger and the guide holes decreasing in size sequentially thereafter.

[0008] Furthermore, a cooling component is provided inside the air guide pipe. The cooling component includes a cooling plate fixedly installed inside the air guide pipe. An inclined plate is fixedly installed on the top of the air guide pipe, and an arc-shaped plate is fixedly installed inside the air guide pipe.

[0009] Furthermore, one end of the intake pipe is provided with an expansion mechanism, which includes an expansion tube fixedly connected to the intake pipe, and a filter screen is fixedly installed inside the expansion tube.

[0010] Furthermore, a closing mechanism is provided inside the frame, which includes two end caps rotatably connected by torsion springs. A second electromagnet is fixedly installed on one side of each end cap, and a first electromagnet is fixedly installed inside the frame.

[0011] Furthermore, an arc-shaped limiting rod is fixedly installed on one side of the end cap, and a positioning groove adapted to the limiting rod is provided inside the frame.

[0012] Furthermore, the limiting rod is provided with a squeezing mechanism, which includes a slide rod that slides within the limiting rod via an elastic rope. A first magnetic block is fixedly installed at one end of the slide rod. A second magnetic block is fixedly installed in the positioning groove. A rubber storage box is fixedly installed at the bottom of the positioning groove. A liquid outlet pipe with a one-way valve is fixedly installed on one side of the storage box and is connected to the interior. The end of the liquid outlet pipe away from the storage box is close to the back plate. A liquid inlet pipe with a one-way valve is fixedly installed on one side of the storage box and is connected to the interior.

[0013] Furthermore, a protective net is fixedly installed inside the outlet pipe, and an arc-shaped liquid guide plate is fixedly installed on one side of the protective net.

[0014] Furthermore, an auxiliary mechanism is provided in the positioning groove. The auxiliary mechanism includes several elastic blocks fixed in the positioning groove. A connecting pipe with a one-way valve is fixedly installed on one side of the elastic block. An air outlet pipe with a one-way valve is fixedly installed on one side of the elastic block. The end of the air outlet pipe away from the elastic block is close to the back plate.

[0015] Furthermore, the end cap is provided with a clearing mechanism, which includes a connecting rod fixedly connected to the end cap, and a rubber ball head is fixedly installed at one end of the connecting rod; the bottom of the expansion tube is provided with a slot, and the bottom of the frame is provided with a through groove that communicates with the slot.

[0016] The beneficial effects of this invention are as follows: 1. The present invention discloses a brake pad with a cooling mechanism. This application achieves indirect cooling of the brake pad friction block by actively cooling the back plate, ensuring that the temperature of the back plate remains consistently lower than that of the friction block, thus creating a stable temperature difference. This temperature difference continuously drives the heat from the friction block to the back plate, and then the heat is carried away from the back plate through cooling measures. Simultaneously, through a gradient design with a large guide hole on the inlet guide plate and a small guide hole on the subsequent guide plate, a large amount of cooling airflow is ensured to reach the rear end of the tube, meeting the cooling needs of the distal brake pad back plate. Furthermore, the arc-shaped air guide plate guides a small portion of the airflow to be evenly discharged along the corresponding hollow tube, achieving distributed and continuous cooling of multiple brake pad back plates distributed along the tube. The structure designed in this application not only solves the problem of poor heat dissipation caused by the installation position and angle of the brake pad body, but also further ensures the stability and continuity of the cooling effect, perfectly adapting to the multi-position synchronous cooling needs of the brake pads on both sides of the brake caliper.

[0017] 2. The brake pad with a cooling mechanism described in this invention features an expansion tube designed to fit the opening size of the frame, ensuring that all gas blown into the frame is directed into the fixed and connecting tubes. A filter installed inside the expansion tube effectively prevents small impurities such as stones from entering the fixed tube. When the frame is in use, the first and second electromagnets are energized, opening the end cap and allowing the limiting rod to be temporarily fixed in the positioning groove, thus allowing gas to enter. The tilted end cap further facilitates gas flow into the expansion tube. When cooling the brake pad is not required, the first and second electromagnets are de-energized, and the end cap closes the frame opening under the action of a torsion spring, allowing for selection of whether this function is activated based on actual conditions.

[0018] 3. The brake pad with a cooling mechanism described in this invention effectively prevents rusting in humid environments by spraying an anti-rust agent onto the backing plate. This avoids rust reducing the heat transfer efficiency between the backing plate and the friction block, ensuring the cooling effect of the brake pad, and preventing rust chips from falling off and contaminating the friction surface. This maintains a stable braking friction coefficient and extends the overall service life of the brake pad. Furthermore, cleaning the backing plate with air before spraying quickly removes dust, metal shavings, oil, and trace amounts of moisture from its surface, providing a clean and dry substrate for the anti-rust coating. This effectively prevents impurities from causing pinholes, bubbles, or peeling of the coating, ensuring the anti-rust coating adheres tightly to the backing plate, improving the adhesion and durability of the protective layer, and making the anti-rust effect more durable and stable.

[0019] 4. The brake pad with a cooling mechanism described in this invention uses a rubber ball on a connecting rod to strike the filter screen when the end cap is reset. This causes impurities on the filter screen to fall off and be discharged through the slot and inclined passage. This ensures that the filter screen is not damaged while also achieving self-cleaning of the filter screen by resetting the end cap, thus ensuring that it can maintain efficient ventilation. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the brake disc in this invention; Figure 2 This is a schematic diagram of the caliper in this invention; Figure 3 This is a schematic diagram of the rear view of the caliper in this invention; Figure 4 This is a schematic diagram of the cavity structure in this invention; Figure 5 This is a schematic diagram of the frame structure in this invention; Figure 6 This is a cross-sectional view of the frame structure in this invention; Figure 7 In this invention Figure 4 A schematic diagram of the structure at point A; Figure 8 In this invention Figure 6 A schematic diagram of the structure at point B; Figure 9 This is a schematic diagram of the structure of the fixed tube in this invention; Figure 10 This is a partial cross-sectional view of the connecting pipe in this invention; Figure 11 This is a partial cross-sectional view of the fixed tube in this invention; Figure 12 This is a cross-sectional view of the air duct in this invention; Figure 13 This is a schematic diagram of the structure inside the positioning groove in this invention; Figure 14 This is a schematic diagram of the structure of the liquid outlet pipe in this invention.

[0022] In the picture: 1. Brake disc; 2. Caliper; 3. Backing plate; 4. Brake pad body; 10. Cooling structure; 11. Frame; 12. Air inlet pipe; 13. Connecting pipe; 14. Air guide pipe; 15. Fixing pipe; 16. Connecting hole; 17. Hollow tube; 18. Return plate; 20. Guiding mechanism; 21. Guide plate; 22. Guide hole; 30. Refrigeration component; 31. Refrigeration element; 32. Inclined plate; 33. Curved plate; 40. Expansion mechanism; 41. Expansion tube; 42. Filter screen; 50. Closing mechanism; 51. End cap; 52. First electromagnet; 53. Second electromagnet; 54. Limiting rod; 55. Positioning groove; 60. Extrusion mechanism; 61. Slide bar; 62. First magnetic block; 63. Storage box; 64. Second magnetic block; 65. Discharge pipe; 66. Protective net; 67. Liquid guide plate; 70. Auxiliary mechanism; 71. Elastic block; 72. Connecting pipe; 73. Air outlet pipe; 80. Unblocking mechanism; 81. Connecting rod; 82. Ball head; 83. Groove; 84. Through groove; 90. Cavity. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 14As shown in the embodiment of the present invention, a brake pad with a cooling mechanism includes a caliper 2 and a brake disc 1 adapted to the caliper 2. A brake pad body 4 is connected to the cavity 90 of the caliper 2 via a back plate 3. The invention also includes a cooling structure 10 disposed within the caliper 2. The cooling structure 10 includes a frame 11 fixedly installed on one side of the caliper 2. One side of the frame 11 is open, and the interior of the frame 11 is connected to an air intake pipe 12 and a connecting pipe 13. Two internal and external air intake pipes are fixedly installed on the surface of the connecting pipe 13. The two air ducts 14 are connected to each other, and the ends of the two air ducts 14 away from the connecting pipe 13 are respectively connected to the interior of the two cavities 90. A hollow fixed pipe 15 connected to the interior of the air duct 14 is installed on the back plate 3 of the cavity 90. Several connecting holes 16 are opened on the surface of the back plate 3. Several hollow pipes 17 connected to the connecting holes 16 on the back plate 3 are fixedly installed on the surface of the fixed pipe 15. Two return plates 18 are fixedly installed inside the connecting pipe 13. Both return plates 18 are fixedly installed near the air duct 14.

[0025] Specifically, a guiding mechanism 20 is provided inside the fixed tube 15. The guiding mechanism 20 includes several guide plates 21 fixedly installed inside the fixed tube 15. Several guide holes 22 are opened on the surface of the guide plates 21. The guide holes 22 on the guide plates 21 are of different sizes, with the guide holes 22 near the air duct 14 being larger and the guide holes 22 decreasing in size sequentially thereafter. A cooling component 30 is provided inside the air duct 14. The cooling component 30 includes cooling plates 31 fixedly installed inside the air duct 14. An inclined plate 32 is fixedly installed on the top of the air duct 14, and an arc-shaped plate 33 is fixedly installed inside the air duct 14.

[0026] During operation, when the vehicle is traveling at high speed, the airflow from the outside enters the fixed pipe 15 and the connecting pipe 13 through the opening of the frame 11. Some of the gas entering the fixed pipe 15 is guided into a duct 14 by the return plate 18, while the other part of the gas continues to flow into the rear end of the connecting pipe 13 and is then guided into another duct 14. This ensures that there is gas in both ducts 14, so that the gas in the two ducts 14 enters the corresponding fixed pipe 15.

[0027] As the gas passes through the gas guide tube 14, it is guided by the inclined plate 32 to the cooling plate 31. The cooling plate 31 (the other side of the cooling plate 31 is outside the gas guide tube 14) further cools the gas. The design of several cooling plates 31 and arc-shaped plates 33 is to allow the gas to be cooled more effectively, so that its temperature is fully reduced before entering the fixed tube 15. After the gas enters the fixed tube 15, some of the gas is guided by the arc-shaped guide plate 21 to the hollow tube 17, and then enters the back plate 3 through the hollow tube 17 to cool the brake pad body 4 connected to the back plate 3. At this time, the other part of the gas continues to flow backward through the guide hole 22 on the guide plate 21, and is discharged through several subsequent hollow tubes 17 and connecting holes 16. The guide holes 22 on several guide plates 21 gradually narrow from the end closest to the air duct 14 away from the air duct 14 to facilitate the backward flow of a large amount of gas. As the amount of gas flowing backward decreases, it will eventually be discharged through the last hollow tube 17 and the connecting hole 16 on the fixed tube 15. It should be noted that the cavity 90 is not completely sealed and has gaps.

[0028] The brake pad body 4 consists of two parts: a friction block that directly rubs against the brake disc 1 and a steel backing plate 3 that provides fixation and support. These two parts are tightly connected without gaps via high-temperature riveting or a special adhesive, exhibiting excellent thermal conductivity. Therefore, during braking, the friction block is the core heat source, and heat is spontaneously and rapidly conducted from the high-temperature friction block to the relatively cooler backing plate 3. This application actively cools the backing plate 3, ensuring its temperature remains consistently lower than that of the friction block, creating a stable temperature difference. This temperature difference continuously drives the heat from the friction block to the backing plate 3, and the heat is then carried away from the backing plate 3 through cooling measures, thus indirectly cooling the brake pad friction block. Simultaneously, through the gradient design of "large guide holes 22 in the inlet guide plate 21 and small guide holes 22 in the subsequent guide plate 21", a large amount of cooling airflow can be ensured to reach the rear end of the tube directly to meet the cooling requirements of the distal brake pad backplate 3. At the same time, with the guiding effect of the arc-shaped air guide plate, a small portion of the airflow can be evenly discharged from the corresponding hollow tube 17 along the tube, realizing distributed and continuous cooling of multiple sets of brake pad backplates 3 distributed along the tube body. The structure designed in this application not only solves the problem of poor heat dissipation effect of the brake pad body 4 due to the installation position and angle, but also further ensures the stability and continuity of the cooling effect, perfectly adapting to the multi-position synchronous cooling requirements of the brake pads on both sides of the brake caliper 2.

[0029] An expansion mechanism 40 is provided at one end of the intake pipe 12. The expansion mechanism 40 includes an expansion tube 41 fixedly connected to the intake pipe 12, and a filter screen 42 is fixedly installed inside the expansion tube 41. A closing mechanism 50 is provided inside the frame 11. The closing mechanism 50 includes two end caps 51 rotatably connected by torsion springs. A second electromagnet 53 is fixedly installed on one side of the end cap 51, and a first electromagnet 52 is fixedly installed inside the frame 11. An arc-shaped limiting rod 54 is fixedly installed on one side of the end cap 51, and a positioning groove 55 adapted to the limiting rod 54 is provided inside the frame 11.

[0030] During operation, the expansion tube 41 is designed to match the opening size of the frame 11, ensuring that all gas blown into the frame 11 is directed into the fixed tube 15 and the connecting tube 13. A filter screen 42 installed inside the expansion tube 41 effectively prevents small impurities such as stones from the road surface from entering the fixed tube 15. Simultaneously, when using the frame 11, the first electromagnet 52 and the second electromagnet 53 are energized, opening the end cap 51 and allowing the limiting rod 54 to be temporarily fixed in the positioning groove 55, thus allowing gas to enter. The tilted end cap 51, once opened, further guides the gas into the expansion tube 41. When air intake for cooling the brake pad body 4 is not required, the first electromagnet 52 and the second electromagnet 53 are de-energized, and the end cap 51 closes the opening of the frame 11 under the action of a torsion spring, allowing for selection of whether this function is activated based on actual conditions.

[0031] A squeezing mechanism 60 is provided on the limiting rod 54. The squeezing mechanism 60 includes a slide rod 61 that slides within the limiting rod 54 via an elastic rope. A first magnetic block 62 is fixedly installed at one end of the slide rod 61. A second magnetic block 64 is fixedly installed in the positioning groove 55. A rubber storage box 63 is fixedly installed at the bottom of the positioning groove 55. A liquid outlet pipe 65 connected to the inside and equipped with a one-way valve is fixedly installed on one side of the storage box 63. The end of the liquid outlet pipe 65 away from the storage box 63 is close to the back plate 3. A liquid inlet pipe connected to the inside and equipped with a one-way valve is fixedly installed on one side of the storage box 63.

[0032] Specifically, a protective net 66 is fixedly installed inside the liquid outlet pipe 65, and an arc-shaped liquid guide plate 67 is fixedly installed on one side of the protective net 66. An auxiliary mechanism 70 is provided in the positioning groove 55. The auxiliary mechanism 70 includes several elastic blocks 71 fixed in the positioning groove 55. A connecting pipe 72 with a one-way valve is fixedly installed on one side of the elastic block 71. An air outlet pipe 73 with a one-way valve is fixedly installed on one side of the elastic block 71. The end of the air outlet pipe 73 away from the elastic block 71 is close to the back plate 3.

[0033] During operation, when the cooling mechanism is required, the first electromagnet 52 and the second electromagnet 53 are energized. The end cap 51, along with the limiting rod 54, enters the positioning groove 55, strengthening the voltage of the first electromagnet 52. This causes the second electromagnet 53, along with the end cap 51 and the limiting rod 54, to continue rotating. The limiting rod 54, along with the sliding rod 61 and the first magnetic block 62, continues to move into the sliding groove. At this time, the first magnetic block 62 on the sliding rod 61 and the second magnetic block 64 in the positioning groove 55 are attracted by opposite polarities, causing the sliding rod 61, along with the first magnetic block 62 and the elastic rope, to move and squeeze the storage box 63. This forces the rust-preventive liquid in the storage box 63 to be sprayed through the outlet pipe 65 onto the back plate 3 (the rust-preventive liquid can be replenished through the inlet pipe, and it is not necessary to spray it every time; it is sprayed according to the actual usage and mileage). When the rust inhibitor is sprayed out through the outlet pipe 65, it is guided to the surrounding area by several arc-shaped guide plates 67, thereby increasing the spraying area and enabling more comprehensive and efficient rust prevention of the back plate 3. When the positioning rod moves towards the storage box 63 in the positioning groove 55, it compresses the elastic block 71, causing the gas in the elastic block 71 to be blown towards the back plate 3 through the air outlet pipe 73 (when the elastic block 71 is not compressed, the gas is replenished through the connecting pipe 72), achieving a pre-cleaning effect on the back plate 3, which facilitates the subsequent spraying of the rust inhibitor. When the above functions are not needed, the first electromagnet 52 and the second electromagnet 53 are de-energized, the end cap 51 will reset under the action of the torsion spring, and the slide rod 61 will also reset under the action of the elastic rope.

[0034] By spraying rust inhibitor onto the backplate 3, rust can be effectively prevented in humid environments. This avoids rust reducing the heat transfer efficiency between the backplate 3 and the friction block, ensuring the cooling effect of the brake pads. It also prevents rust chips from falling off and contaminating the friction surface, maintaining a stable braking friction coefficient and extending the overall service life of the brake pads. Furthermore, cleaning the backplate 3 with air before spraying quickly removes dust, metal shavings, oil, and trace amounts of moisture from its surface, providing a clean and dry substrate for the rust-preventive coating. This effectively prevents impurities from causing pinholes, bubbles, or peeling of the coating, ensuring the rust-preventive coating adheres tightly to the backplate 3, improving the adhesion and durability of the protective layer, and making the rust prevention effect more lasting and stable.

[0035] The end cap 51 is provided with a clearing mechanism 80, which includes a connecting rod 81 fixedly connected to the end cap 51. One end of the connecting rod 81 is fixedly installed with a rubber ball head 82. The bottom of the expansion tube 41 is provided with a slot 83, and the bottom of the frame 11 is provided with a through groove 84 that communicates with the slot 83.

[0036] During operation, when the end cap 51 is reset, the rubber ball head 82 on the connecting rod 81 will strike the filter screen 42, causing the impurities on the filter screen 42 to fall off and be discharged through the slot 83 and the inclined through groove 84. This ensures that the filter screen 42 is not damaged, and the reset of the end cap 51 can achieve self-cleaning of the filter screen 42, ensuring that it can maintain efficient ventilation.

[0037] Working principle: When the vehicle is traveling at high speed, the outside airflow enters the fixed pipe 15 and the connecting pipe 13 through the opening of the frame 11. Part of the gas entering the fixed pipe 15 is guided into a duct 14 by the return plate 18, while the remaining gas continues to flow into the rear end of the connecting pipe 13 and is then guided into another duct 14. This ensures that both ducts 14 contain gas, allowing the gas in both ducts 14 to enter the corresponding fixed pipe 15. As the gas passes through the duct 14, it is guided by the inclined plate 32 to the cooling plate 31, which further cools the gas. The design of several cooling plates 31 and the arc-shaped plate 33 is to further cool the gas, ensuring its temperature is sufficiently reduced before entering the fixed pipe 15. As the gas enters the fixed tube 15, some of it is guided by the arc-shaped guide plate 21 to the hollow tube 17, and then enters the back plate 3 through the hollow tube 17 to cool the brake pad body 4 connected to the back plate 3. Meanwhile, the remaining gas continues to flow backward through the guide hole 22 on the guide plate 21 and is discharged through several subsequent hollow tubes 17 and connecting holes 16. The guide holes 22 on the guide plates 21 gradually narrow from the end closest to the air duct 14 away from the air duct 14 to facilitate the backward flow of a large amount of gas. As the amount of gas flowing backward decreases, it will eventually be discharged through the last hollow tube 17 and connecting hole 16 on the fixed tube 15.

[0038] By designing the expansion tube 41 to match the opening size of the frame 11, the gas blown into the frame 11 is guided into the fixed tube 15 and the connecting tube 13. Installing a filter screen 42 inside the expansion tube 41 effectively prevents small impurities such as stones from the road surface from entering the fixed tube 15. Simultaneously, when using the frame 11, the first electromagnet 52 and the second electromagnet 53 are energized, opening the end cap 51 and allowing the limiting rod 54 to be temporarily fixed in the positioning groove 55, thus allowing gas to enter. The tilted end cap 51, after opening, better guides the gas into the expansion tube 41. When air intake is not needed to cool the brake pad body 4, the first electromagnet 52 and the second electromagnet 53 are not energized, and the end cap 51 closes the opening of the frame 11 under the action of the torsion spring.

[0039] When it is determined that a cooling mechanism is needed, the first electromagnet 52 and the second electromagnet 53 are energized. The end cap 51, along with the limiting rod 54, enters the positioning groove 55, strengthening the voltage of the first electromagnet 52. This causes the second electromagnet 53, along with the end cap 51 and the limiting rod 54, to continue rotating. The limiting rod 54, along with the sliding rod 61 and the first magnetic block 62, continues to move into the sliding groove. At this time, the first magnetic block 62 on the sliding rod 61 and the second magnetic block 64 in the positioning groove 55 are attracted by opposite charges, causing the sliding rod 61, along with the first magnetic block 62 and the elastic rope, to move and squeeze the storage box 63. This forces the rust-preventive liquid in the storage box 63 to be sprayed onto the back plate 3 through the outlet pipe 65. When the rust-preventive agent is sprayed out through the outlet pipe 65, it is guided to the surrounding area by several arc-shaped guide plates 67, thereby increasing the spraying area and enabling more comprehensive and efficient rust prevention of the back plate 3. When the positioning rod moves towards the storage box 63 in the positioning groove 55, it compresses the elastic block 71, causing the gas inside the elastic block 71 to be blown towards the back plate 3 through the air outlet 73, thus pre-cleaning the back plate 3 and facilitating the subsequent application of rust inhibitor. When the above functions are not needed, the first electromagnet 52 and the second electromagnet 53 are de-energized, the end cover 51 will reset under the action of the torsion spring, and the slide rod 61 will also reset under the action of the elastic rope.

[0040] When the end cap 51 is reset, the rubber ball head 82 on the connecting rod 81 will strike the filter screen 42, causing the impurities on the filter screen 42 to fall off and be discharged through the slot 83 and the inclined through groove 84. This ensures that the filter screen 42 is not damaged, and the reset of the end cap 51 can achieve self-cleaning of the filter screen 42, ensuring that it can maintain efficient ventilation.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brake pad with a cooling mechanism, comprising a caliper (2) and a brake disc (1) adapted to the caliper (2), wherein a brake pad body (4) is connected to the cavity (90) of the caliper (2) via a back plate (3); characterized in that: It also includes a cooling structure (10) disposed inside the caliper (2); The cooling structure (10) includes a frame (11) fixedly installed on one side of the caliper (2). One side of the frame (11) is open, and the inside of the frame (11) is connected by an air inlet pipe (12) and a connecting pipe (13). Two air guide pipes (14) connected to the inside are fixedly installed on the surface of the connecting pipe (13). The ends of the two air guide pipes (14) away from the connecting pipe (13) are respectively connected to the inside of two cavities (90). The cavity (90) has a hollow fixed tube (15) installed on the back plate (3) and connected to the inside of the air duct (14). The back plate (3) has several connection holes (16) on its surface. The fixed tube (15) has several hollow tubes (17) that are connected to the connection holes (16) on the back plate (3) and are fixedly installed on its surface. Two return plates (18) are fixedly installed inside the connecting pipe (13), and both return plates (18) are fixedly installed near the air guide pipe (14).

2. A brake pad with a cooling mechanism according to claim 1, characterized in that: The fixed tube (15) is provided with a guide mechanism (20), which includes a number of guide plates (21) fixedly installed in the fixed tube (15). The surface of the guide plate (21) is provided with a number of guide holes (22) that penetrate through itself. The guide holes (22) on the guide plates (21) are of different sizes. The guide holes (22) near the air pipe (14) are larger, and the guide holes (22) thereafter are progressively smaller.

3. A brake pad with a cooling mechanism according to claim 1, characterized in that: A cooling component (30) is provided inside the air duct (14). The cooling component (30) includes a cooling plate (31) fixedly installed inside the air duct (14). An inclined plate (32) is fixedly installed on the top of the air duct (14). An arc plate (33) is fixedly installed inside the air duct (14).

4. A brake pad with a cooling mechanism according to claim 1, characterized in that: An expansion mechanism (40) is provided at one end of the air intake pipe (12). The expansion mechanism (40) includes an expansion pipe (41) fixedly connected to the air intake pipe (12). A filter screen (42) is fixedly installed inside the expansion pipe (41).

5. A brake pad with a cooling mechanism according to claim 4, characterized in that: The frame (11) is provided with a closing mechanism (50), which includes two end caps (51) rotatably connected by torsion springs. A second electromagnet (53) is fixedly installed on one side of the end cap (51), and a first electromagnet (52) is fixedly installed inside the frame (11).

6. A brake pad with a cooling mechanism according to claim 5, characterized in that: An arc-shaped limiting rod (54) is fixedly installed on one side of the end cap (51), and a positioning groove (55) adapted to the limiting rod (54) is opened in the frame (11).

7. A brake pad with a cooling mechanism according to claim 6, characterized in that: The limiting rod (54) is provided with a pressing mechanism (60), the pressing mechanism (60) includes a slide rod (61) that slides within the limiting rod (54) via an elastic rope, and a first magnetic block (62) is fixedly installed at one end of the slide rod (61). A second magnetic block (64) is fixedly installed in the positioning groove (55). A rubber storage box (63) is fixedly installed at the bottom of the positioning groove (55). A liquid outlet pipe (65) with a one-way valve is fixedly installed on one side of the storage box (63). The end of the liquid outlet pipe (65) away from the storage box (63) is close to the back plate (3). A liquid inlet pipe with a one-way valve is fixedly installed on one side of the storage box (63).

8. A brake pad with a cooling mechanism according to claim 7, characterized in that: A protective net (66) is fixedly installed inside the liquid outlet pipe (65), and an arc-shaped liquid guide plate (67) is fixedly installed on one side of the protective net (66).

9. A brake pad with a cooling mechanism according to claim 6, characterized in that: An auxiliary mechanism (70) is provided in the positioning groove (55). The auxiliary mechanism (70) includes several elastic blocks (71) fixed in the positioning groove (55). A connecting pipe (72) with an internal connection and a one-way valve is fixedly installed on one side of the elastic block (71). An air outlet pipe (73) with an internal connection and a one-way valve is fixedly installed on one side of the elastic block (71). The end of the air outlet pipe (73) away from the elastic block (71) is close to the back plate (3).

10. A brake pad with a cooling mechanism according to claim 5, characterized in that: The end cap (51) is provided with a dredging mechanism (80), which includes a connecting rod (81) fixedly connected to the end cap (51), and a rubber ball head (82) is fixedly installed at one end of the connecting rod (81). The bottom of the expansion tube (41) is provided with a slot (83), and the bottom of the frame (11) is provided with a through slot (84) that communicates with the slot (83).

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