Friction element structure of disc brake

Abstract

The invention belongs to the technical field of friction elements, and discloses a disc brake friction element structure which comprises a brake disc, a caliper cover and brake blocks, the brake blocks are arranged on the two sides of the brake disc, the two brake blocks are installed in the caliper cover, cooling assemblies are arranged on the two sides in the caliper cover, and the cooling assemblies are installed in the caliper cover. The cooling assembly comprises liquid outlet pipes evenly installed in the caliper cover, the liquid outlet pipes are fixedly connected through connecting pipes, the top end of each connecting pipe is fixedly connected with a liquid inlet pipe, a ball valve is rotatably installed in each liquid outlet pipe, and the outer wall of each ball valve is fixedly connected with a rotating shaft. Heat of the brake block is quickly conducted through the heat dissipation crystal plate and the heat conduction plate, meanwhile, a thermal expansion material in the air bag is heated to enable the air bag to expand, the ball valve is driven to rotate to open an inner channel of the liquid outlet pipe, cooling liquid is discharged to cool the two sides of the brake disc, and the brake effect and the driving safety are improved advantageously.

Description

Technical Field

[0001] The present invention belongs to the technical field of friction elements, and specifically relates to a friction element structure of a disc brake. Background Art

[0002] A disc brake (also known as a caliper brake) is a core component in a modern automotive braking system, which achieves deceleration or stopping through friction. A disc brake mainly consists of a brake disc, a brake caliper, brake pads, and a hydraulic system. Among them, the brake disc and the brake pads, as the core friction elements of the disc brake, their performance directly affects braking efficiency, heat dissipation effect, and service life;

[0003] During the driving of an automobile, a large amount of heat is generated on the brake disc due to friction. Therefore, the thermal stability and wear resistance of the brake disc material are particularly important. In order to improve braking efficiency and extend its service life, modern disc brakes generally adopt high-performance friction materials and advanced heat dissipation designs. Although ventilation holes for cooling are currently provided on the brake disc to optimize heat dissipation performance, its actual effect is still restricted by various physical mechanisms and complex working conditions, and the heat dissipation effect is limited. Once the temperature of the brake disc is too high, it will seriously weaken braking performance, threaten structural safety, and affect driving reliability. Summary of the Invention

[0004] The purpose of the present invention is to provide a friction element structure of a disc brake to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A friction element structure of a disc brake, including a brake disc, a caliper cover, and brake pads. Brake pads are arranged on both sides of the brake disc, and both of the two brake pads are installed inside the caliper cover. Cooling components are arranged on both sides inside the caliper cover;

[0006] The cooling components include liquid outlet pipes uniformly installed inside the caliper cover. Each of the liquid outlet pipes is fixedly connected by a connecting pipe. The top end of the connecting pipe is fixedly connected with a liquid inlet pipe, and the liquid inlet pipe passes through the inside of the caliper cover and extends outwards;

[0007] A ball valve is rotatably installed inside each of the liquid outlet pipes. A rotating shaft is fixedly connected to the outer wall of each ball valve. A first gear is fixedly installed at one end of each rotating shaft. A first rack plate is meshed and connected to the bottom end of each first gear. Each of the first rack plates is fixedly connected by a connecting shaft. A connecting plate is fixedly connected to the bottom end of one of the first rack plates. A moving plate is arranged on one side of the connecting plate. A heat conducting plate is arranged on one side of the moving plate. An airbag is installed inside the heat conducting plate. Through holes are formed on the side wall of the heat conducting plate. A heat dissipating crystal plate is fixedly connected to one end of the heat conducting plate, and the heat dissipating crystal plate is installed on one side of the brake pad.

[0008] As a further technical solution of the present invention, the heat conduction plate is slidably installed inside the caliper housing.

[0009] As a further technical solution of the present invention, the heat conduction plate is slidably connected to the moving plate.

[0010] As a further technical solution of the present invention, a limiting shaft is fixedly connected to one side of the moving plate. The limiting shaft is slidably installed inside the caliper housing, and a first spring is installed on the outer wall of the limiting shaft.

[0011] As a further technical solution of the present invention, a piston is fixedly connected to one end of the connecting shaft. The piston is slidably installed inside the sliding groove, and air holes are uniformly arranged on the side wall of the sliding groove. Both the sliding groove and the air holes are opened inside the caliper housing.

[0012] As a further technical solution of the present invention, a second spring is arranged on one side of the piston.

[0013] As a further technical solution of the present invention, a control plate is arranged on one side of the air hole. The control plate is slidably installed inside the caliper housing, and limiting blocks are fixedly installed at both ends of the control plate.

[0014] As a further technical solution of the present invention, a filter screen is installed at one end of the air hole.

[0015] As a further technical solution of the present invention, a water-absorbing cotton is embedded inside the air hole. The water-absorbing cotton is installed on one side of the filter screen.

[0016] As a further technical solution of the present invention, a second gear is fixedly installed on the outer wall of one end of the water-absorbing cotton. The top of the second gear is meshed and connected with a second rack plate. The second rack plate is fixedly installed on one side of the control plate.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. Through the setting of the temperature reduction component, when the brake block is at a high temperature during operation, the heat of the brake block is quickly conducted through the heat dissipation crystal plate and the heat conduction plate. At the same time, the thermal expansion material inside the airbag is heated, causing the airbag to expand. Part of the airbag is extruded from the through hole, pushing the moving plate to move to one side. The movement of the moving plate drives the movement of the connecting plate. The movement of the connecting plate drives the movement of one of the first rack plates. The movement of the first rack plate drives the movement of the connecting shaft. When the connecting shaft moves, it drives all the first rack plates to move. The movement of the first rack plate drives the rotation of the first gear. The rotation of the first gear drives the rotation of the rotating shaft. The rotation of the rotating shaft drives the ball valve to rotate and open the internal channel of the liquid outlet pipe, so that the coolant is discharged to cool both sides of the brake disc, preventing the problem that the too high temperature of the brake block will seriously weaken the braking performance, threaten the structural safety and affect the driving reliability. Spraying the coolant on both sides of the brake disc helps to improve the braking effect.

[0019] 2. When the piston drives the control plate to move to close part of the air hole during reset. During temperature reduction, when the piston slides inside the sliding groove, the piston moves to one side of the limit block and pushes the limit block forward for a certain distance. At the same time, the movement of the limit block drives the movement of the control plate, causing the control plate to move to close part of the air hole. The overall ventilation area of the air hole decreases, and the speed of the piston during reset decreases, so that the coolant can be discharged for a longer time, enabling the brake block to be fully cooled.

[0020] 3. Through the setting of the wringing absorbent cotton, when the control plate moves, the movement of the control plate drives the movement of the second rack plate. The movement of the second rack plate drives the rotation of the second gear. The rotation of the second gear drives the wringing of the absorbent cotton itself to drain the water inside, and it is reversely wrung and reset when the control plate resets, which helps to restore its water absorption performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic cross-sectional view of the structure at the caliper cover of the present invention;

[0023] Figure 3 is of the present invention Figure 2 is an enlarged schematic view of the structure at A in the present invention;

[0024] Figure 4 is of the present invention Figure 2 is an enlarged schematic view of the structure at B in the present invention;

[0025] Figure 5 is a schematic diagram of the structure at the connecting pipe of the present invention;

[0026] Figure 6 is a schematic diagram of the structure at the control plate of the present invention;

[0027] Figure 7 Schematic structural diagram of the moving plate of the present invention;

[0028] Figure 8 Schematic structural diagram of the heat dissipation crystal plate of the present invention.

[0029] In the figure: 1, brake disc; 2, caliper cover; 3, brake block; 4, heat dissipation crystal plate; 5, heat conduction plate; 6, airbag; 7, through hole; 8, moving plate; 9, limiting shaft; 10, first spring; 11, liquid outlet pipe; 12, connecting pipe; 13, liquid inlet pipe; 14, ball valve; 15, rotating shaft; 16, first gear; 17, first rack plate; 18, connecting plate; 19, connecting shaft; 20, piston; 21, sliding groove; 22, second spring; 23, air hole; 24, filter screen; 25, absorbent cotton; 26, control board; 27, limiting block; 28, second rack plate; 29, second gear. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] As Figures 1 to 8 shown, in the embodiment of the present invention, a friction element structure of a disc brake includes a brake disc 1, a caliper cover 2 and a brake block 3. Brake blocks 3 are arranged on both sides of the brake disc 1, and both brake blocks 3 are installed inside the caliper cover 2. Cooling components are arranged on both sides inside the caliper cover 2;

[0032] The cooling components include liquid outlet pipes 11 uniformly installed inside the caliper cover 2. Each liquid outlet pipe 11 is fixedly connected by a connecting pipe 12. The top of the connecting pipe 12 is fixedly connected with a liquid inlet pipe 13, and the liquid inlet pipe 13 passes through the inside of the caliper cover 2 and extends outward;

[0033] A ball valve 14 is rotatably installed inside each liquid outlet pipe 11. A rotating shaft 15 is fixedly connected to the outer wall of each ball valve 14. One end of each rotating shaft 15 is fixedly installed with a first gear 16. The bottom end of each first gear 16 is meshed with a first rack plate 17. Each first rack plate 17 is fixedly connected by a connecting shaft 19. One of the first rack plates 17 is fixedly connected with a connecting plate 18. A moving plate 8 is arranged on one side of the connecting plate 18. A heat conduction plate 5 is arranged on one side of the moving plate 8. An airbag 6 is installed inside the heat conduction plate 5. A through hole 7 is formed in the side wall of the heat conduction plate 5. One end of the heat conduction plate 5 is fixedly connected with a heat dissipation crystal plate 4, and the heat dissipation crystal plate 4 is installed on one side of the brake block 3.

[0034] The liquid inlet pipe 13 is connected to an external coolant tank.

[0035] Both the heat dissipation crystal plate 4 and the heat conduction plate 5 are made of high thermal conductivity materials such as graphene and copper alloy, and are used to quickly conduct the heat of the brake block 3.

[0036] The inside of the airbag 6 stores a thermal expansion material, which can quickly respond and expand at high temperatures and can reset itself after cooling (such as paraffin composite material or polysiloxane-based liquid crystal elastomer).

[0037] The airbag 6 is set as a high-temperature resistant airbag, which has good high-temperature resistance and excellent elastic reset ability (such as spacecraft airbags, industrial heat-resistant airbags, and fire escape airbags).

[0038] During operation, when the brake block 3 is at a high temperature, the heat of the brake block 3 is quickly conducted through the heat dissipation crystal plate 4 and the heat conduction plate 5. At the same time, the thermal expansion material inside the airbag 6 is heated to cause the airbag 6 to expand, and part of the airbag 6 is extruded from the through hole 7, pushing the moving plate 8 to move to one side. The movement of the moving plate 8 drives the movement of the connecting plate 18. The movement of the connecting plate 18 drives the movement of one of the first rack plates 17. The movement of the first rack plate 17 drives the movement of the connecting shaft 19. When the connecting shaft 19 moves, it drives all the first rack plates 17 to move. The movement of the first rack plate 17 drives the rotation of the first gear 16. The rotation of the first gear 16 drives the rotation of the rotating shaft 15. The rotation of the rotating shaft 15 drives the rotation of the ball valve 14 to open the internal channel of the liquid outlet pipe 11, so that the coolant is discharged to cool both sides of the brake disc 1, preventing the problem that the temperature of the brake block 3 is too high, which will seriously weaken the braking performance, threaten the structural safety and affect the driving reliability. Spraying coolant on both sides of the brake disc 1 helps to improve the braking effect.

[0039] Such as Figure 1 、 Figure 2 and Figure 4 As shown, the heat conduction plate 5 is slidably installed inside the caliper housing 2.

[0040] Such as Figure 1 、 Figure 2 and Figure 4 As shown, the heat conduction plate 5 is slidably connected to the moving plate 8.

[0041] The width of the opening of the through hole 7 is smaller than the width of the moving plate 8, which is convenient for the airbag 6 to expand and contact the moving plate 8 during vehicle braking.

[0042] Such as Figure 2 、 Figure 4 and Figure 7As shown, one side of the moving plate 8 is fixedly connected with a limiting shaft 9. The limiting shaft 9 is slidably installed inside the caliper housing 2, and a first spring 10 is installed on the outer wall of the limiting shaft 9.

[0043] When the temperature drops, when the moving plate 8 pushes the connecting plate 18 to move to one side, the first spring 10 deforms under force and stores elastic potential energy.

[0044] After the temperature drops, the elastic potential energy is released by the first spring 10 to move the moving plate 8 back to its original position.

[0045] As Figure 2 、 Figure 3 and Figure 7 As shown, one end of the connecting shaft 19 is fixedly connected with a piston 20. The piston 20 is slidably installed inside the sliding groove 21. The side wall of the sliding groove 21 is evenly provided with air holes 23. Both the sliding groove 21 and the air holes 23 are opened inside the caliper housing 2.

[0046] When the temperature drops, the moving plate 8 pushes the connecting plate 18 to move to one side, driving the connecting shaft 19 to move. The movement of the connecting shaft 19 drives the piston 20 to slide inside the sliding groove 21. Through the communication with the outside through the air holes 23, the piston 20 can slide smoothly inside the sliding groove 21.

[0047] As Figure 2 、 Figure 3 and Figure 7 As shown, a second spring 22 is provided on one side of the piston 20.

[0048] When the temperature drops, when the piston 20 slides inside the sliding groove 21, the movement of the piston 20 causes the second spring 22 to deform under force and store elastic potential energy.

[0049] After the temperature drops, the elastic potential energy is released by the second spring 22 to move the piston 20 back to its original position, thereby stopping the liquid discharge for cooling, avoiding continuous discharge of the coolant for a long time, and reducing waste.

[0050] As Figure 2 and Figure 3 As shown, a control plate 26 is provided on one side of the air hole 23. The control plate 26 is slidably installed inside the caliper housing 2, and limiting blocks 27 are fixedly installed at both ends of the control plate 26.

[0051] When the temperature drops, when the piston 20 slides inside the sliding groove 21, the piston 20 moves to one side of the limiting block 27 and pushes the limiting block 27 forward for a certain distance. At the same time, the movement of the limiting block 27 drives the movement of the control plate 26, causing the control plate 26 to move to close part of the air hole 23. The overall ventilation area of the air hole 23 decreases, and the speed of the piston 20 during reset is reduced, so that the coolant can be discharged for a longer time, enabling the brake block 3 to be fully cooled.

[0052] When the piston 20 resets, the piston 20 contacts another limit block 27 at one end of the control board 26, causing the control board 26 to move and reset to fully open the air hole 23.

[0053] As Figure 1 、 Figure 2 and Figure 3 shown, a filter screen 24 is installed at one end of the air hole 23.

[0054] The filter screen 24 protects one end of the air hole 23 to prevent external impurities from entering the device.

[0055] As Figure 2 and Figure 3 shown, a water-absorbing cotton 25 is embedded inside the air hole 23, and the water-absorbing cotton 25 is installed on one side of the filter screen 24.

[0056] The water-absorbing cotton 25 is made of a material with good water absorption. When used in rainy days, the water-absorbing cotton 25 absorbs the rainwater inside the air hole 23, minimizing the possibility of external water entering the device as much as possible, thereby increasing the service life of the device.

[0057] As Figure 2 、 Figure 3 and Figure 7 shown, a second gear 29 is fixedly installed on the outer wall of one end of the water-absorbing cotton 25, and the top of the second gear 29 is meshed with a second rack plate 28, and the second rack plate 28 is fixedly installed on one side of the control board 26.

[0058] One end of the water-absorbing cotton 25 close to the filter screen 24 is fixedly connected to it;

[0059] When the control board 26 moves, the movement of the control board 26 drives the movement of the second rack plate 28, the movement of the second rack plate 28 drives the rotation of the second gear 29, and the rotation of the second gear 29 drives the water-absorbing cotton 25 to twist itself to drain the internal moisture, and when the control board 26 resets, it twists back to reset, which helps to restore its water absorption performance;

[0060] The air hole 23 is preferably set to be inclined outwards, which can not only reduce the possibility of external impurities and rainwater entering the device, but also help the water-absorbing cotton 25 to drain water when wringing out water.

[0061] Working principle and usage process:

[0062] When working, when the brake block 3 is at a high temperature, the heat of the brake block 3 is quickly conducted through the heat dissipation crystal plate 4 and the heat conduction plate 5. At the same time, the thermally expandable material inside the airbag 6 is heated to cause the airbag 6 to expand, and part of the airbag 6 is extruded from the through hole 7 to push the moving plate 8 to move to one side. When the moving plate 8 moves, the first spring 10 is deformed by force to store elastic potential energy;

[0063] Meanwhile, the movement of the moving plate 8 drives the movement of the connecting plate 18. The movement of the connecting plate 18 drives the movement of one of the first rack plates 17. The movement of the first rack plate 17 drives the movement of the connecting shaft 19. When the connecting shaft 19 moves, it drives the movement of all the first rack plates 17. The movement of the first rack plate 17 drives the rotation of the first gear 16. The rotation of the first gear 16 drives the rotation of the rotating shaft 15. The rotation of the rotating shaft 15 drives the rotation of the ball valve 14 to open the internal channel of the liquid outlet pipe 11, so that the coolant is discharged to cool both sides of the brake disc 1;

[0064] Meanwhile, the movement of the connecting shaft 19 drives the piston 20 to slide inside the chute 21, and the movement of the piston 20 causes the second spring 22 to be deformed and store elastic potential energy. When the piston 20 moves to one side of the limit block 27 and pushes the limit block 27 forward for a certain distance, at the same time, the movement of the limit block 27 drives the movement of the control plate 26, so that the control plate 26 moves to close part of the air hole 23;

[0065] Meanwhile, the movement of the control plate 26 drives the movement of the second rack plate 28. The movement of the second rack plate 28 drives the rotation of the second gear 29. The rotation of the second gear 29 drives the absorbent cotton 25 to twist itself to drain the water inside;

[0066] When the brake block 3 cools down, the airbag 6 contracts and resets. At the same time, the first spring 10 releases elastic potential energy to make the moving plate 8 move and reset;

[0067] At the same time, the second spring 22 releases elastic potential energy to make the piston 20 move and reset. The area of the air hole 23 is reduced to reduce the reset speed of the piston 20. Similarly, when the piston 20 is reset, the liquid outlet pipe 11 stops discharging the coolant, and the cooling of the brake block 3 is completed.

[0068] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure of a disc brake friction element, comprising a brake disc (1), a caliper cover (2) and a brake pad (3), characterized in that: Brake pads (3) are provided on both sides of the brake disc (1). Both of the two brake pads (3) are installed inside the caliper housing (2), and cooling components are provided on both sides inside the caliper housing (2). The cooling components include liquid outlet pipes (11) evenly installed inside the caliper housing (2). Each of the liquid outlet pipes (11) is fixedly connected by a connecting pipe (12). The top of the connecting pipe (12) is fixedly connected to a liquid inlet pipe (13). The liquid inlet pipe (13) passes through the inside of the caliper housing (2) and extends outward. A ball valve (14) is rotatably installed inside each of the liquid outlet pipes (11). A rotating shaft (15) is fixedly connected to the outer wall of each of the ball valves (14). A first gear (16) is fixedly installed at one end of each of the rotating shafts (15). A first rack plate (17) is meshed and connected to the bottom end of each of the first gears (16). Each of the first rack plates (17) is fixedly connected by a connecting shaft (19). A connecting plate (18) is fixedly connected to the bottom end of one of the first rack plates (17). A moving plate (8) is provided on one side of the connecting plate (18). A heat conducting plate (5) is provided on one side of the moving plate (8). An airbag (6) is installed inside the heat conducting plate (5). A through hole (7) is formed in the side wall of the heat conducting plate (5). A heat dissipating crystal plate (4) is fixedly connected to one end of the heat conducting plate (5). The heat dissipating crystal plate (4) is installed on one side of the brake pad (3).

2. The structure of a disc brake friction element according to claim 1, characterized in that: The heat conducting plate (5) is slidably installed inside the caliper housing (2).

3. The structure of a disc brake friction element according to claim 1, characterized in that: The heat conducting plate (5) is slidably connected to the moving plate (8).

4. A disc brake friction element structure according to claim 1, characterized in that: A limiting shaft (9) is fixedly connected to one side of the moving plate (8). The limiting shaft (9) is slidably installed inside the caliper housing (2). A first spring (10) is installed on the outer wall of the limiting shaft (9).

5. The structure of a disc brake friction element according to claim 1, wherein: A piston (20) is fixedly connected to one end of the connecting shaft (19). The piston (20) is slidably installed inside a chute (21). Air holes (23) are evenly provided on the side wall of the chute (21). The chute (21) and the air holes (23) are both formed inside the caliper housing (2).

6. The structure of a disc brake friction element according to claim 5, characterized in that: A second spring (22) is provided on one side of the piston (20).

7. The structure of a disc brake friction element according to claim 5, characterized in that: A control plate (26) is provided on one side of the air hole (23). The control plate (26) is slidably installed inside the caliper housing (2). Limit blocks (27) are fixedly installed at both ends of the control plate (26).

8. The structure of a disc brake friction element according to claim 5, characterized in that: A filter screen (24) is installed at one end of the air hole (23).

9. A structure of a friction element of a disc brake according to claim 5, characterized in that: A water absorbent cotton (25) is embedded inside the air hole (23). The water absorbent cotton (25) is installed on one side of the filter screen (24).

10. A disc brake friction element structure according to claim 9, characterized in that: A second gear (29) is fixedly installed on the outer wall of one end of the water absorbent cotton (25). A second rack plate (28) is meshed and connected to the top of the second gear (29). The second rack plate (28) is fixedly installed on one side of the control plate (26).

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