Ventilation structure of ceramic brake pad

Abstract

The utility model belongs to brake pad technical field especially relates to a ceramic brake pad's ventilation structure, including metal mounting piece and the installation buckle of setting in metal mounting piece both sides, the ceramic brake pad is provided with in metal mounting piece front end, both sides of metal mounting piece front end all are equipped with the positioning convex strip, the ceramic brake pad back part is equipped with two groups of positioning groove with the positioning convex strip adaptation, the metal mounting piece middle part upper end sets up the positioning hole. Through being provided in the main ventilation groove of ceramic brake pad rear end, let ceramic brake pad rear end's main ventilation groove through the ventilation hole and the front end's multiple groups of heat dissipation groove through, form complete air flow circulation path, let the air of ventilation pump inhale from outside, after filtration bushing filtration send into main ventilation groove, air flow is distributed to each heat dissipation groove through ventilation hole, after heat exchange with ceramic brake pad surface, exhaust, thereby let ventilation pump construct initiative ventilation system, effectively avoid the problem that heat dissipation groove inner air flow velocity sudden drop, heat can not export quickly.

Description

Technical Field

[0001] This utility model relates to the field of brake pad technology, and in particular to a ventilation structure for ceramic brake pads. Background Technology

[0002] Brake pads are also called brake linings. In a car's braking system, brake pads are the most critical safety component. To improve the lifespan of brake pads, carbon ceramic brake pads with high wear resistance have been developed for the market.

[0003] Chinese Patent CN223387854U, authorized by patent announcement number CN223387854U, discloses a ceramic wear-resistant brake pad, including a metal mounting plate. The upper surface of the metal mounting plate has a first mounting groove and multiple heat dissipation grooves. The heat dissipation grooves have an arc-shaped cross-section. Multiple sets of anti-slip patterns do not extend beyond the edge of the ceramic pad. The arc-shaped grooves have an arc-shaped cross-section. A second mounting groove contains high-temperature resistant sound-absorbing cotton. Multiple connecting through holes are provided on the lower inner wall of the multiple first mounting grooves. In this invention, the second mounting groove is located on the lower surface of the metal mounting plate. The high-temperature resistant sound-absorbing cotton inside the second mounting groove absorbs noise through the connecting through holes on the lower inner wall of the heat dissipation grooves, thus achieving noise reduction for the brake pad. Simultaneously, the ceramic pad does not have internal noise-reducing grooves, which does not affect the strength of the ceramic pad and prevents breakage.

[0004] However, the above technical solution still has the following shortcomings in actual use. The solution relies on the natural convection and passive airflow of the arc-shaped heat sink. The airflow is completely limited by the vehicle speed. When driving at low speed, frequent braking in urban congestion, or continuous braking on long downhill slopes, the centrifugal force is insufficient, and the airflow velocity in the heat sink drops sharply, and the heat cannot be quickly dissipated. Therefore, we propose a ventilation structure for ceramic brake pads to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a ventilation structure for ceramic brake pads to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a ventilation structure for a ceramic brake pad, comprising a metal mounting plate and mounting clips disposed on both sides of the metal mounting plate. A ceramic brake pad is disposed at the front end of the metal mounting plate, and positioning protrusions are installed on both sides of the front end of the metal mounting plate. Two sets of positioning grooves adapted to the positioning protrusions are opened on the back of the ceramic brake pad. A positioning hole is opened at the upper middle part of the metal mounting plate. A groove corresponding to the positioning hole is opened at the middle of the top of the ceramic brake pad. A positioning pin is disposed in the positioning hole. Multiple sets of heat dissipation grooves are evenly spaced on the outer wall of the front end of the ceramic brake pad. A main ventilation groove is opened at the middle of the rear end of the ceramic brake pad. An air exchange pump is installed at the right end of the main ventilation groove. A filter sleeve is installed on the outside of the air inlet end of the air exchange pump. The air outlet end of the air exchange pump is embedded in the main ventilation groove and sealed to the main ventilation groove. A dustproof ring is installed at the left end of the main ventilation groove. Both ends of the heat dissipation groove are connected to the main ventilation groove through ventilation holes. Multiple sets of temperature sensors are evenly spaced on the outer wall of the front end of the ceramic brake pad.

[0007] As an improved technical solution, the temperature sensor is a miniature ceramic-encapsulated temperature sensor.

[0008] As an improved technical solution, the gap between the positioning groove and the positioning protrusion is filled with a high-temperature resistant ceramic adhesive.

[0009] As an improved technical solution, the positioning pin passes through the positioning hole and is embedded inside the groove.

[0010] As an improved technical solution, the filter sleeve is made of high-temperature resistant material, and the filter sleeve is threadedly connected to the air inlet end of the air exchange pump.

[0011] As an improved technical solution, the dustproof ring is a hollow high-temperature resistant rubber ring, and the dustproof ring is connected to the left end of the main ventilation slot through a snap-fit ​​structure.

[0012] As an improved technical solution, the air exchange pump is a miniature high-temperature resistant DC air exchange pump.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are: I. This utility model utilizes a main ventilation slot located at the rear end of the ceramic brake pad. This main ventilation slot connects to multiple heat dissipation slots at the front end via ventilation holes, forming a complete airflow circulation path. An air exchange pump draws in air from the outside, filters it through a filter sleeve, and then sends it into the main ventilation slot. The airflow is distributed to each heat dissipation slot through the ventilation holes, exchanges heat with the surface of the ceramic brake pad, and is then discharged. This allows the air exchange pump to construct an active ventilation system, effectively eliminating dependence on vehicle speed and centrifugal force. This ensures that the ceramic brake pad maintains a stable airflow velocity even under low-speed driving, frequent braking in urban congestion, or continuous braking on long downhill slopes, effectively preventing the problem of a sudden drop in airflow velocity within the heat dissipation slots and the inability to quickly dissipate heat.

[0014] II. This utility model uses a positioning protrusion and a positioning pin to allow the positioning protrusion at the front end of the metal mounting plate to be embedded in the positioning groove on the back of the ceramic brake pad. At the same time, the positioning pin passes through the positioning hole of the metal mounting plate and is embedded in the groove of the ceramic brake pad, achieving double mechanical positioning and ensuring the stability of the ceramic brake pad during use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model in a partially disassembled state; Figure 4 For the present utility model Figure 3 A schematic diagram of the rear view structure; Figure 5 This is a partial cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Metal mounting plate; 2. Mounting clip; 3. Ceramic brake pad; 4. Positioning protrusion; 5. Positioning groove; 6. Groove; 7. Positioning hole; 8. Positioning pin; 9. Main ventilation slot; 10. Ventilation hole; 11. Air pump; 12. Filter sleeve; 13. Dustproof ring; 14. Temperature sensor; 15. Heat dissipation slot. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] This utility model provides a technical solution: such as Figures 1 to 5As shown, in this embodiment, a ventilation structure for a ceramic brake pad includes a metal mounting plate 1 and mounting clips 2 disposed on both sides of the metal mounting plate 1. A ceramic brake pad 3 is disposed at the front end of the metal mounting plate 1. Positioning protrusions 4 are installed on both sides of the front end of the metal mounting plate 1. Two sets of positioning grooves 5 adapted to the positioning protrusions 4 are opened on the back of the ceramic brake pad 3. A positioning hole 7 is opened at the upper middle part of the metal mounting plate 1. A groove 6 coaxially corresponding to the positioning hole 7 is opened at the middle of the top of the ceramic brake pad 3. A positioning pin 8 is disposed in the positioning hole 7. The ceramic brake pad 3 has multiple sets of heat dissipation grooves 15 evenly spaced on the outer wall of the front end. The ceramic brake pad 3 has a main ventilation groove 9 in the middle of the rear end. An air exchange pump 11 is installed at the right end of the main ventilation groove 9. A filter sleeve 12 is installed on the outside of the air inlet end of the air exchange pump 11. The air outlet end of the air exchange pump 11 is embedded in the main ventilation groove 9 and sealed to the main ventilation groove 9. A dustproof ring 13 is installed at the left end of the main ventilation groove 9. Both ends of the heat dissipation groove 15 are connected to the main ventilation groove 9 through ventilation holes 10. Multiple sets of temperature sensors 14 are evenly spaced on the outer wall of the front end of the ceramic brake pad 3.

[0019] The positioning protrusion 4 at the front end of the metal mounting plate 1 is embedded into the positioning groove 5 on the back of the ceramic brake pad 3. At the same time, the positioning pin 8 passes through the positioning hole 7 of the metal mounting plate 1 and is embedded into the groove 6 of the ceramic brake pad 3, achieving dual positioning and ensuring the stability of the ceramic brake pad 3 during use. The main ventilation groove 9 at the rear end of the ceramic brake pad 3 serves as the main airflow channel. It is connected to multiple sets of heat dissipation grooves 15 at the front end through the ventilation hole 10, forming a complete airflow circulation path. The air pump 11 draws in air from the outside, filters it through the filter sleeve 12, and sends it into the main ventilation groove 9. The airflow is distributed to each heat dissipation groove 15 through the ventilation hole 10, exchanges heat with the surface of the ceramic brake pad 3, and is then discharged. The filter sleeve 12 intercepts impurities in the air, and the dustproof ring 13 prevents external dust and debris from entering the main ventilation groove 9 in reverse. The temperature sensor 14 monitors the working temperature of the ceramic brake pad 3 in real time.

[0020] In other embodiments, temperature sensor 14 is a miniature ceramic-encapsulated temperature sensor; This design allows the temperature sensor 14 to be encapsulated in a miniature ceramic package, which is suitable for the high-temperature working environment of the ceramic brake pad 3. The sensor probe is directly attached to the outer wall of the front end of the ceramic brake pad 3 to collect the temperature data of the brake pad in real time. The analog or digital signal is then converted and transmitted to the vehicle VCU, allowing the VCU to judge the thermal load status of the ceramic brake pad 3 in real time, and thereby control the start, stop and speed of the air pump 11.

[0021] In other embodiments, the gap between the positioning groove 5 and the positioning protrusion 4 is filled by a high-temperature resistant ceramic adhesive; With this design, when the positioning protrusion 4 and the positioning groove 5 are fitted together, the tiny gap between them is filled by a high-temperature resistant ceramic adhesive. After the adhesive cures at room temperature, it forms a high-strength, high-temperature resistant adhesive layer, which not only fills the gap of mechanical fit, but also firmly bonds the metal mounting piece 1 and the ceramic brake pad 3 together. At the same time, the adhesive has good thermal stability and will not soften or decompose in the high-temperature environment generated by braking, thus maintaining the bonding strength.

[0022] In other embodiments, the positioning pin 8 passes through the positioning hole 7 and is embedded inside the groove 6; This design allows the positioning pin 8 to penetrate the positioning hole 7 of the metal mounting plate 1 and then embed into the groove 6 of the ceramic brake pad 3, forming an axial positioning constraint to prevent the ceramic brake pad 3 from sliding up and down along the front end face of the metal mounting plate 1, thus avoiding relative displacement or detachment between the ceramic brake pad 3 and the metal mounting plate 1.

[0023] In other embodiments, the filter sleeve 12 is made of a high-temperature resistant material, and the filter sleeve 12 is threadedly connected to the air inlet end of the air exchange pump 11. This design allows the filter sleeve 12 to effectively intercept dust, sand, metal shavings and other impurities in the air, preventing them from entering the air exchange pump 11 or the main ventilation slot 9, thus avoiding blockage of the airflow channel or wear of the air exchange pump 11. Furthermore, the filter sleeve 12 is connected by threads, so when there is too much dust on the surface of the filter sleeve 12, it can be quickly disassembled for cleaning or replacement without disassembling the air exchange pump 11.

[0024] In other embodiments, the dustproof ring 13 is a hollow high-temperature resistant rubber ring, and the dustproof ring 13 is connected to the left end of the main ventilation slot 9 through a snap-fit ​​structure; This design allows the hollow structure on the dustproof ring 13 to ensure that the airflow in the main ventilation channel 9 can be smoothly discharged, while also preventing dust, debris and other impurities from entering from the left end of the main ventilation channel 9, thus enhancing the dustproof effect. The snap-on structure makes it easy to remove the dustproof ring 13 periodically, making it easy to clean the small amount of impurities accumulated inside the main ventilation channel 9.

[0025] In other embodiments, the air exchange pump 11 is a miniature high-temperature resistant DC air exchange pump; This design allows the working voltage of the air pump 11 to be compatible with the vehicle's power supply, enabling it to be directly connected to the vehicle's electrical system. The vehicle's VCU can then adjust the speed of the air pump 11 in real time based on the temperature data transmitted by the temperature sensor 14. When the temperature of the ceramic brake pad 3 is below a preset threshold, the air pump 11 stops working, while when the temperature is above the preset threshold, the air pump 11 starts, providing a stable active airflow to the airflow channel, thereby achieving on-demand heat dissipation.

[0026] This utility model provides a ventilation structure for ceramic brake pads, and its specific working principle is as follows: During installation, the metal mounting plate 1 is fixedly connected to the brake caliper of the vehicle's braking system via the mounting clips 2 on both sides. Then, the ceramic brake pad 3 is fitted into the positioning groove 5 on the back and the positioning protrusion 4 at the front end of the metal mounting plate 1 to achieve initial lateral positioning. Subsequently, the positioning pin 8 is inserted through the positioning hole 7 of the metal mounting plate 1 and embedded into the groove 6 of the ceramic brake pad 3 to complete axial positioning. Finally, high-temperature resistant ceramic adhesive is filled into the gap between the positioning groove 5 and the positioning protrusion 4, the gap between the positioning pin 8 and the positioning hole 7 and the groove 6. After the adhesive has cured, the metal mounting plate 1 and the ceramic brake pad 3 form a firm integrated structure, ensuring that there will be no relative displacement or detachment during braking.

[0027] During temperature measurement, multiple sets of temperature sensors 14, evenly spaced on the outer wall of the front end of the ceramic brake pad 3, are in real-time contact with the inner surface of the brake pad to collect temperature data of the brake pad during braking. The temperature sensors 14 then convert the collected temperature signals into electrical signals and continuously transmit them to the vehicle's VCU, providing accurate data support for subsequent ventilation and heat dissipation control. The vehicle's VCU judges based on the signals from the temperature sensors 14 and executes the corresponding control strategy for the air pump 11. When the temperature of the ceramic brake pad 3 rises, the VCU controls the air pump 11 to switch to high-speed operation to increase the air volume. Under the action of air pressure, the airflow in the main ventilation slot 9 is quickly diverted to each heat dissipation slot 15 through the evenly distributed ventilation holes 10, forming a through airflow that quickly removes heat.

[0028] The electrical components and main controllers mentioned in this article can all be conventional, known devices such as computers that provide control.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A ventilation structure for ceramic brake pads, comprising a metal mounting plate (1) and mounting clips (2) disposed on both sides of the metal mounting plate (1), characterized in that: The metal mounting plate (1) has a ceramic brake pad (3) at its front end. Positioning protrusions (4) are installed on both sides of the front end of the metal mounting plate (1). Two sets of positioning grooves (5) adapted to the positioning protrusions (4) are provided on the back of the ceramic brake pad (3). A positioning hole (7) is opened at the upper middle part of the metal mounting plate (1). A groove (6) corresponding to the positioning hole (7) is opened at the middle of the top of the ceramic brake pad (3). A positioning pin (8) is provided inside the positioning hole (7). Multiple sets of heat dissipation grooves (15) are evenly spaced on the outer wall of the front end of the ceramic brake pad (3). The ceramic brake pad (3) has a main ventilation slot (9) in the middle of its rear end. An air exchange pump (11) is installed at the right end of the main ventilation slot (9). A filter sleeve (12) is installed on the outside of the air inlet end of the air exchange pump (11). The air outlet end of the air exchange pump (11) is embedded in the main ventilation slot (9) and sealed to the main ventilation slot (9). A dustproof ring (13) is installed at the left end of the main ventilation slot (9). Both ends of the heat dissipation slot (15) are connected to the main ventilation slot (9) through air exchange holes (10). Multiple temperature sensors (14) are installed at equal intervals on the outer wall of the front end of the ceramic brake pad (3).

2. The ventilation structure for a ceramic brake pad according to claim 1, characterized in that: The temperature sensor (14) is a miniature ceramic-encapsulated temperature sensor.

3. The ventilation structure of a ceramic brake pad according to claim 1, characterized in that: The gap between the positioning groove (5) and the positioning protrusion (4) is filled by a high-temperature resistant ceramic adhesive.

4. The ventilation structure of a ceramic brake pad according to claim 1, characterized in that: The positioning pin (8) passes through the positioning hole (7) and is embedded inside the groove (6).

5. The ventilation structure of a ceramic brake pad according to claim 1, characterized in that: The filter sleeve (12) is made of high temperature resistant material and is threadedly connected to the air inlet end of the air exchange pump (11).

6. The ventilation structure for a ceramic brake pad according to claim 1, characterized in that: The dustproof ring (13) is a hollow high-temperature resistant rubber ring, and the dustproof ring (13) is connected to the left end of the main ventilation groove (9) through a snap-fit ​​structure.

7. The ventilation structure for a ceramic brake pad according to claim 1, characterized in that: The air exchange pump (11) is a miniature high-temperature resistant DC air exchange pump.

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