Brake pad with heat dissipation structure

Abstract

The invention relates to a brake pad with a heat dissipation structure in the field of brake pads, which comprises a brake caliper main body, a pressurizing piston is mounted on the brake caliper main body, and the movable end of the pressurizing piston is fixedly connected with the brake pad main body; the brake pad body comprises a cooling fin, a plurality of friction plates are fixedly connected to the cooling fin, a hollow heat exchange beam is arranged between every two adjacent friction plates, each hollow heat exchange beam comprises a heat conduction beam, and the two ends of each heat conduction beam are connected with hollow guide beams; a flow guide channel communicated with the liquid guide column is formed in the brake caliper body, the end, inserted into the flow guide channel, of the hollow guide beam is fixedly connected with the liquid guide column, a liquid inlet hole is formed in the upper end of the liquid guide column, and a pressure monitoring cover is installed at the output end of the flow guide channel and comprises an inner pressure monitoring ring and an outer pressure monitoring ring. And through cooperation of the hollow heat exchange beam and the brake pad body, it is ensured that the brake pad is effectively cooled in the braking process, and the brake pad is conveniently and actively cooled after braking work is finished.

Description

Technical Field

[0001] A brake pad of the present invention, in particular, a brake pad with a heat dissipation structure applied to the field of brake pads. Background Art

[0002] Existing brake pads usually adopt advanced heat dissipation structure designs to ensure effective heat dissipation during braking, preventing performance degradation or damage caused by overheating. These brake pads are usually made of composite materials, including metals, ceramics, and carbon fibers, which have good thermal conductivity and high-temperature resistance. The heat dissipation structure may include heat sinks, ventilation holes, or heat dissipation channels, which help air circulation and thus improve the heat dissipation efficiency. In addition, some high-performance brake pads may also adopt special coating technologies to further enhance the heat dissipation effect and wear resistance. These brake pads are widely used in fields such as automobiles, motorcycles, and industrial machinery, providing an important guarantee for ensuring safety and extending the service life of the braking system.

[0003] The specification of Chinese invention patent CN106678210B discloses a wear-resistant automotive brake pad, including a mounting plate and a friction plate. Mounting holes for assembling the mounting plate are symmetrically provided at both ends of the outer wall of the mounting plate, and positioning holes are evenly provided on the outer wall of the mounting plate. The friction plate includes a porous hard fiber board. This wear-resistant automotive brake pad can not only cool the friction plate but also reduce the influence of water droplets on the friction force of the friction plate, greatly improving the wear resistance of the friction plate.

[0004] The specification of Chinese invention patent CN113775675B discloses an electric vehicle and a braking device for an electric vehicle, including a brake caliper and a brake disc used in cooperation. A guide member is provided in the brake caliper, and two brake linings are provided by using the guide member. This electric vehicle and the braking device for an electric vehicle can, on the basis of ensuring single-brake-pad point braking and double-brake-pad heavy braking, effectively compensate for the worn brake pads when the brake pads are worn and affect the stable braking performance in the heavy braking state, so as to ensure stable double-brake-pad heavy braking use and provide better safety protection.

[0005] Existing brake pads rely on material thermal conductivity and passive heat dissipation structures such as heat sinks and ventilation holes, unable to actively perform forced heat exchange when friction generates heat, and lacking the ability to continuously dissipate heat after braking. The heat generated by friction is easy to accumulate in the middle of the brake pads, easily causing the brake pads to overheat and fail. Summary of the Invention

[0006] Aiming at the above-mentioned existing technologies, the technical problem to be solved by the present invention is that existing brake pads rely on material thermal conductivity and passive heat dissipation structures, unable to actively perform forced heat exchange when friction generates heat, and lacking the ability to continuously dissipate heat after braking.

[0007] To solve the above problems, the present invention provides a brake pad with a heat dissipation structure, which includes a brake caliper body. A pressurizing piston is installed on the brake caliper body, and the movable end of the pressurizing piston is fixedly connected to a brake pad body; the brake pad body includes heat dissipation fins, and a plurality of friction pads are fixedly connected to the heat dissipation fins. A hollow heat exchange beam is provided between adjacent two friction pads. The hollow heat exchange beam includes a heat conduction beam, and both ends of the heat conduction beam are connected with hollow guiding beams;

[0008] A diversion channel matching the hollow guiding beam is opened in the brake caliper body. One end of the hollow guiding beam inserted into the diversion channel is fixedly connected with a liquid guiding column. A liquid inlet hole is opened at the upper end of the liquid guiding column, and a piston ring that relatively slides with the diversion channel is fixedly connected to the outer wall of the liquid guiding column;

[0009] A pressure monitoring cover matching the hollow guiding beam is installed at the output end of the diversion channel. The pressure monitoring cover includes an inner pressure monitoring ring and an outer pressure monitoring ring. The inner pressure monitoring ring is located at the output end of the diversion channel and is opposite to the piston ring, and the outer pressure monitoring ring is located on the surface of the brake caliper body and is matched with the position of the heat dissipation fins;

[0010] A pair of conduits connected to a circulation pump are fixedly connected to the brake caliper body, and the pair of conduits are respectively communicated with two diversion channels.

[0011] In the above-mentioned brake pad with a heat dissipation structure, it is convenient to effectively dissipate heat from the brake pad during the braking process.

[0012] As a further improvement of the present application, the diversion channel includes a guiding section and a turning section. The liquid guiding column slides in the turning section. The guiding section is communicated with the conduit. The pressure monitoring cover is installed at the output end of the turning section, and an annular electromagnet matching the piston ring is fixedly connected to the top end of the turning section.

[0013] As a further improvement of the present application, a receiving groove matching the top end of the liquid guiding column is opened at the top end of the turning section. When the hollow heat exchange beam is in the initial position, the liquid guiding column is inserted into the receiving groove, and the liquid inlet hole is closed. When the hollow heat exchange beam descends to the maximum displacement, the liquid inlet hole is communicated with the guiding section, and at this time the piston ring pressurizes the outer pressure monitoring ring.

[0014] As a further improvement of the present application, heat exchange fins consistent with the movement direction of the brake pad body are fixedly connected to the outer wall of the heat conduction beam, and a strip-shaped groove matching the heat exchange fins is opened at the side end of the friction pad.

[0015] As a further improvement of the present application, it further includes an auxiliary heat dissipation system. The auxiliary heat dissipation system includes a single-chip microcomputer, and a control module, a data processing module and a data acquisition module are connected to the single-chip microcomputer;

[0016] The data acquisition module is used to collect the monitoring data at each pressure monitoring cover;

[0017] The control module is used to control the operation of the circulation pump and the electromagnet;

[0018] The data processing module is used to process and analyze the monitoring data, and adjust the operation of the control module according to the data analysis results to work according to the set process.

[0019] As another improved supplement of the present application, there is also a warning module. The warning module is used to monitor the wear of the brake pads. When the brake pads are working, according to the pressure change of the inner pressure monitoring ring by the piston ring, judge the wear condition of the brake pads. When the pressure detected by the inner pressure monitoring ring exceeds the set value, an alarm is given.

[0020] As another improved supplement of the present application, the pressure monitoring cover includes a movable lock cover. A limit insertion rod is connected to the movable lock cover and inserted into the brake caliper body and slides relative to it. An electric plug pin for locking the pressure monitoring cover is connected between the movable lock cover and the brake caliper body. After the warning module gives an alarm, the electric plug pin contracts to release the limit of the movable lock cover.

[0021] In summary, this solution ensures effective heat dissipation of the brake pads during the braking process by the cooperation of the hollow heat exchange beam and the brake pad body, and facilitates active heat dissipation of the brake pads after the braking work is completed, and also facilitates detecting the situation of excessive wear of the brake pads. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Is a perspective view of the first embodiment of the present application;

[0023] Figure 2 Is a front cross-sectional view of the first embodiment of the present application;

[0024] Figure 3 Is Figure 2 The structural schematic diagram at A in

[0025] Figure 4 Is a side cross-sectional view of the first embodiment of the present application;

[0026] Figure 5 Is Figure 4 The structural schematic diagram at B in

[0027] Figure 6 Is a cross-sectional view of the brake pad body of the first embodiment of the present application;

[0028] Figure 7 Is a cross-sectional view of the brake pad body of the first embodiment of the present application;

[0029] Figure 8 Is Figure 6 The structural schematic diagram at C in

[0030] Figure 9 System block diagram of the second implementation mode of this application.

[0031] Description of the reference numerals in the figure:

[0032] 1. Brake caliper body; 11. Flow guiding channel; 111. Guiding section; 112. Steering section; 2. Pressing piston; 3. Brake pad body; 4. Hollow heat exchange beam; 41. Heat conducting beam; 42. Hollow guiding beam; 43. Liquid guiding column; 44. Piston ring; 5. Pressure monitoring cover; 51. Inner pressure monitoring ring; 52. Outer pressure monitoring ring. Specific implementation mode

[0033] The following will make a detailed description of the two implementation modes of this application with reference to the accompanying drawings.

[0034] The first implementation mode:

[0035] Figures 1-8 As shown, a brake pad with a heat dissipation structure includes a brake caliper body 1, a pressing piston 2 is installed on the brake caliper body 1, and the movable end of the pressing piston 2 is fixedly connected to a brake pad body 3; the brake pad body 3 includes heat dissipation fins, and a plurality of friction pads are fixedly connected to the heat dissipation fins, and a hollow heat exchange beam 4 is provided between two adjacent friction pads, and the height of the hollow heat exchange beam 4 is half of the depth of the gap between two adjacent friction pads;

[0036] The hollow heat exchange beam 4 includes a heat conducting beam 41, and both ends of the heat conducting beam 41 are connected with a hollow guiding beam 42;

[0037] A flow guiding channel 11 matching the hollow guiding beam 42 is opened in the brake caliper body 1, one end of the hollow guiding beam 42 inserted into the flow guiding channel 11 is fixedly connected with a liquid guiding column 43, a liquid inlet hole is opened at the upper end of the liquid guiding column 43, and a piston ring 44 that slides relatively to the flow guiding channel 11 is fixedly connected to the outer wall of the liquid guiding column 43;

[0038] Heat exchange fins moving in the same direction as the movement direction of the brake pad body 3 are fixedly connected to the outer wall of the heat conducting beam 41, a strip-shaped groove matching the heat exchange fins is opened at the side end of the friction pad, and the heat exchange fins can slide in the strip-shaped groove, and the strip-shaped groove is used to increase the heat exchange area with the heat conducting beam 41;

[0039] A pressure monitoring cover 5 matching the hollow guiding beam 42 is installed at the output end of the flow guiding channel 11, the pressure monitoring cover 5 includes an inner pressure monitoring ring 51 and an outer pressure monitoring ring 52, the inner pressure monitoring ring 51 is located at the output end of the flow guiding channel 11 and is opposite to the piston ring 44, the outer pressure monitoring ring 52 is located on the surface of the brake caliper body 1 and is matched with the position of the heat dissipation fins, the outer pressure monitoring ring 52 is used to detect whether the brake pad body 3 is completely reset, and a set pressure is maintained on the outer pressure monitoring ring 52 when the brake pad body 3 is completely reset;

[0040] A pair of conduits connected to the circulating pump are fixedly connected to the brake caliper body 1, and the pair of conduits communicate with two diversion channels 11 respectively; the circulating pump adopts the prior art and is installed by those skilled in the art with a suitable circulating pump in the prior art; and a cooler for cooling the refluxed heat-conducting liquid is installed on the circulating pump, and after the heat-conducting liquid returns to the circulating pump, it is cooled to a set temperature by the cooler and then output;

[0041] The diversion channel 11 includes a guiding section 111 and a turning section 112. The liquid guiding column 43 slides in the turning section 112. The guiding section 111 communicates with the conduit. The pressure monitoring cover 5 is installed at the output end of the turning section 112. An annular electromagnet matching the piston ring 44 is fixedly connected to the top end of the turning section 112, and a permanent magnet is installed inside the piston ring 44.

[0042] A receiving groove matching the top end of the liquid guiding column 43 is opened at the top end of the turning section 112. When the hollow heat exchange beam 4 is in the initial position, the liquid guiding column 43 is inserted into the receiving groove, and the liquid inlet hole is closed. When the hollow heat exchange beam 4 descends to the maximum displacement, at this time, the liquid inlet hole on the liquid guiding column 43 communicates with the guiding section 111, and at the same time, the piston ring 44 pressurizes the internal pressure monitoring ring 51, and the pressure monitoring cover 5 sends a pressure signal to the circulating pump to make the circulating pump work for oil delivery.

[0043] When this embodiment works, when the brake pad body 3 is pushed by the pressure piston 2 and contacts the brake disc to generate frictional heat, at this time, the hollow heat exchange beam 4 is driven by the moving brake pad body 3 to move, so that the liquid guiding column 43 leaves the receiving groove and faces the guiding section 111. At this time, the piston ring 44 pressurizes the internal pressure monitoring ring 51; then the circulating pump inputs heat-conducting oil into the hollow heat exchange beam 4;

[0044] The heat-conducting oil in the diversion channel 11 flows through the liquid guiding column 43 into the heat-conducting beam 41 and exchanges heat with the friction pads on the brake pad body 3; the heat-conducting oil flows in from one end of the hollow heat exchange beam 4 and flows out from the other end; the heat-conducting oil flows in from one end of the hollow heat exchange beam 4 and exchanges heat with the friction pads, and after heat exchange, it flows out from the other end of the hollow heat exchange beam 4, and finally discharges from the brake caliper body 1 and returns to the circulation system;

[0045] In addition, when the annular electromagnet is energized and works, it attracts the piston ring 44, and then makes the hollow heat exchange beam 4 move, so that after the brake pad body 3 stops braking and resets, the hollow heat exchange beam 4 can be actively reset; setting the annular electromagnet to actively reset and adjust the hollow heat exchange beam 4 is convenient for the brake pad body 3 during continuous braking, the hollow heat exchange beam 4 does not need to continuously move with the brake pad body 3, reduces the wear of the piston ring 44, and is easy to extend the service life; for example: when the pressure monitoring cover 5 detects that the braking frequency of the brake pad body 3 exceeds 3 times per minute (that is, the reset times of the brake pad body 3 per minute exceed 3 times), the electromagnet is energized to keep the hollow heat exchange beam 4 in an open state;

[0046] When the brake pad body 3 still needs to be cooled after resetting, the annular electromagnet is energized and repels the permanent magnet inside the piston ring 44, so that the piston ring 44 slides and opens the liquid inlet hole; in this way, the hollow heat exchange beam 4 is always open and heat-conducting oil is introduced for cooling.

[0047] In summary, in this embodiment, through the cooperation of the hollow heat exchange beam 4 and the brake pad body 3, the effective conduction and dissipation of heat during braking are ensured. Also, through the linkage of the pressure monitoring cover 5 and the circulation pump, the control of the brake pad temperature is achieved. When heat is generated by the friction between the brake pad body 3 and the brake disc, the hollow heat exchange beam 4 moves with the brake pad body, and heat-conducting oil flows through it. The heat-conducting oil flowing in the hollow heat exchange beam 4 takes away the heat of the friction plate on the brake pad body 3 to achieve heat dissipation; in addition, the introduction of the annular electromagnet not only realizes the active reset adjustment of the hollow heat exchange beam 4, but also enables the liquid inlet hole to be actively opened and heat-conducting oil to be continuously introduced for cooling when the brake pad body 3 still needs to be cooled after resetting.

[0048] The second embodiment:

[0049] Figure 9 As shown, it further includes an auxiliary heat dissipation system. The auxiliary heat dissipation system includes a single-chip microcomputer, and a control module, a data processing module and a data acquisition module are connected to the single-chip microcomputer;

[0050] The data acquisition module is used to collect the monitoring data at each pressure monitoring cover 5; the monitoring data includes: the pressure monitoring value of the inner pressure monitoring ring 51 and the pressure monitoring value of the outer pressure monitoring ring 52;

[0051] The control module is used to control the circulation pump and the electromagnet to work;

[0052] The data processing module is used to process and analyze the monitoring data, and adjust the control module to work according to the set process according to the data analysis result;

[0053] It further includes an early warning module. The early warning module is used to monitor the wear of the brake pads. When the brake pads are working, according to the pressure change of the piston ring 44 on the inner pressure monitoring ring 51, the wear condition of the brake pads is judged. The more severely the brake pads are worn, when the pressure detected by the inner pressure monitoring ring 51 exceeds the set value, an alarm is given.

[0054] The pressure monitoring cover 5 includes a movable locking cover. The inner pressure monitoring ring 51 and the outer pressure monitoring ring 52 are respectively installed on the inner and outer sides of the movable locking cover. A limiting insertion rod that is inserted into the brake caliper body 1 and slides relative to it is connected to the movable locking cover. An electric bolt for locking the pressure monitoring cover 5 is connected between the movable locking cover and the brake caliper body 1. After the warning module gives an alarm, the electric bolt contracts, releasing the limit on the movable locking cover. At this time, the further movement of the piston ring 44 is not blocked, enabling the distance of the movement of the hollow heat exchange beam 4 driven by its movement to increase after the brake pads are worn too much. By releasing the limit on the pressure monitoring cover 5, it is avoided that the piston ring 44 applies too much pressure to the inner pressure monitoring ring 51 and damages the inner pressure monitoring ring 51.

[0055] This embodiment realizes the functions of brake pad wear warning and automatic adjustment of heat dissipation efficiency. When the brake pads are worn to a certain extent, the warning module can timely give an alarm and release the limit on the movable locking cover through the electric bolt, so that the movement range of the piston ring 44 increases, and then the movement distance of the hollow heat exchange beam 4 increases; it is avoided that the hollow heat exchange beam 4 is limited and blocks the movement of the brake pad body 3; this design not only enhances the safety during the use of the brake pads, but also facilitates detecting the situation that the brake pads are worn too much.

[0056] In summary, this solution ensures effective heat dissipation of the brake pads while braking through the cooperation of the hollow heat exchange beam 4 and the brake pad body 3, and facilitates active heat dissipation of the brake pads after the braking work is completed, and also facilitates detecting the situation that the brake pads are worn too much.

[0057] Combined with the current actual requirements, the above-mentioned implementation manner adopted in this application, the protection scope is not limited thereto. Within the knowledge scope of those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A brake pad with a heat dissipation structure, comprising a brake caliper body (1), and a pressure piston (2) is installed on the brake caliper body (1), characterized in that: The movable end of the pressurizing piston (2) is fixedly connected to a brake pad body (3); the brake pad body (3) includes a heat sink, a plurality of friction plates are fixedly connected to the heat sink, a hollow heat exchange beam (4) is provided between two adjacent friction plates, the hollow heat exchange beam (4) includes a heat conducting beam (41), and both ends of the heat conducting beam (41) are connected to hollow guide beams (42); A guide channel (11) matching the hollow guide beam (42) is provided in the brake caliper body (1); one end of the hollow guide beam (42) inserted into the guide channel (11) is fixedly connected to a liquid guide column (43); a liquid inlet hole is provided at the upper end of the liquid guide column (43); and a piston ring (44) that slides relative to the guide channel (11) is fixedly connected to the outer wall of the liquid guide column (43); The output end of the guide channel (11) is provided with a pressure monitoring cover (5) matched with the hollow guide beam (42), and the pressure monitoring cover (5) comprises an inner pressure monitoring ring (51) and an outer pressure monitoring ring (52), wherein the inner pressure monitoring ring (51) is located at the output end of the guide channel (11) and is opposite to the piston ring (44), and the outer pressure monitoring ring (52) is located on the surface of the brake caliper body (1) and matches the position of the heat sink; A pair of conduits connected to a circulation pump is fixedly connected to the brake caliper body (1), and the pair of conduits are respectively communicated with two diversion channels (11).

2. The brake pad with a heat dissipation structure according to claim 1, characterized in that: The diversion channel (11) comprises a guide section (111) and a diversion section (112), the liquid guide column (43) slides in the diversion section (112), the guide section (111) is communicated with a conduit, the pressure monitoring cover (5) is mounted on the output end of the diversion section (112), and the top end of the diversion section (112) is fixedly connected to an annular electromagnet that matches the piston ring (44).

3. The brake pad with a heat dissipation structure according to claim 2, characterized in that: The top of the turning section (112) is provided with a receiving groove that matches the top of the liquid guide column (43). When the hollow heat exchange beam (4) is in the initial position, the liquid guide column (43) is inserted into the receiving groove, and the liquid inlet hole is closed. When the hollow heat exchange beam (4) descends to the maximum displacement, the liquid inlet hole communicates with the guide section (111), and at this time, the piston ring (44) pressurizes the external pressure monitoring ring (52).

4. A brake pad with a heat dissipation structure according to claim 1, characterized in that: A heat exchange fin is fixedly connected to the outer wall of the heat conducting beam (41) and is in the same direction of movement as the brake plate body (3). A strip groove matching the heat exchange fin is provided at the side end of the friction plate.

5. The brake pad with a heat dissipation structure according to claim 1, characterized in that: It also includes an auxiliary heat dissipation system, which includes a single-chip microcomputer, and the single-chip microcomputer is connected to a control module, a data processing module and a data acquisition module; The data acquisition module is used to collect monitoring data at each pressure monitoring cover (5); The control module is used to control the operation of the circulation pump and the electromagnet; The data processing module is used to process and analyze monitoring data, and adjust the control module to work according to the set process based on the data analysis results.

6. The brake pad with a heat dissipation structure according to claim 1, wherein: The invention also includes an early warning module, which is used to monitor the wear of the brake pad. When the brake pad is working, the wear condition of the brake pad is judged according to the pressure change of the piston ring (44) on the internal pressure monitoring ring (51). When the pressure detected by the internal pressure monitoring ring (51) exceeds a set value, an alarm is issued.

7. The brake pad with a heat dissipation structure according to claim 6, characterized in that: The pressure monitoring cover (5) comprises a movable locking cover, the movable locking cover being connected to a limiting rod inserted into the brake caliper body (1) and sliding relative thereto, an electric latch for locking the pressure monitoring cover (5) being connected between the movable locking cover and the brake caliper body (1), and after the early warning module issues an alarm, the electric latch retracts, releasing the limit of the movable locking cover.

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