Automobile brake caliper

Abstract

The utility model relates to the technical field of automobile braking, in particular to an automobile brake caliper which comprises a caliper body, a return mechanism, a pressure equalizing assembly and a heat dissipation assembly. The return mechanism is matched with the elastic supporting piece through a driving block to realize uniform return of the friction plate; the pressure equalizing assembly optimizes the stress distribution of a push rod through an adjusting block and a pressure plate; the heat dissipation performance of the heat dissipation assembly is improved through the flow guide grooves, the heat conduction pieces and the heat dissipation fins. The problem of return force attenuation is solved through the elastic supporting piece of the multi-layer corrugated structure and the damping coating, stress concentration is reduced through the design of the reset spring, the overall structure simplifies the assembling procedure, cost is reduced, meanwhile, the heat dissipation efficiency is improved, the service life is prolonged, and the requirements for high responsiveness, high stability and long service life of a modern automobile braking system are met; and high practicability and popularization value are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, especially to a brake caliper of automobile. BACKGROUND

[0002] With the continuous development of automobile braking technology, disc brake calipers, as the core components in vehicle braking systems, have been widely used in various passenger cars and commercial vehicles. The existing caliper structure meets the basic braking function, but higher requirements are put forward in terms of braking responsiveness, return reliability, compactness and heat dissipation performance. However, the current mainstream caliper design still has problems such as insufficient return of the friction plate, uneven stress, complex structure or poor heat dissipation in practical application, which affects the stability and service life of the braking system.

[0003] After searching, a kind of caliper brake friction plate return mechanism, caliper brake and automobile with publication number CN113738795B are disclosed, and the publication date is July 21, 2023. The patent proposes a friction plate return mechanism based on elastic return disc, which sets guide shaft and symmetrical elastic return disc between two caliper covers, and uses the face contact of elastic return disc to realize the return driving of friction plate. The structure improves the force balance and stability in the return process to some extent. However, this scheme relies on the independent setting of elastic return disc and guide shaft assembly, resulting in complex overall structure, increased assembly process, increased manufacturing cost and failure risk. In addition, the elastic return disc is an additional element that needs additional space to arrange, which is not conducive to the miniaturization and lightweight design of the caliper body, and its material performance is easy to decay in harsh conditions such as high temperature and high humidity, and the return force decays significantly after long-term use, affecting the braking sensitivity.

[0004] After searching, a kind of caliper for disc brake with publication number CN107559356B is disclosed, and the publication date is October 26, 2021. The patent provides a caliper structure integrated with return spring, and the return spring adopts an integrated design, including a fixed part and an extending thrust branch part, and the return action is realized by the contact between the free end of the cantilever and the edge of the support plate. This scheme integrates the return function in the caliper body, which is relatively compact and helps to improve space utilization. However, the return spring adopts a linear bending structure, and only the end point contact is used to apply the restoring force, which leads to uneven force distribution and causes friction plate eccentric wear or jamming phenomenon. At the same time, this structure has high machining precision requirements, and stress concentration is easy to occur during spring forming, which reduces the fatigue life. In addition, under the condition of frequent braking, the contact part between the edge of the support plate and the spring is easy to wear, which leads to return failure or abnormal noise.

[0005] The above problems show that the caliper structure in the prior art still has defects such as complex structure, uneven force, insufficient reliability and poor durability in the design of the friction plate return mechanism, and it is difficult to meet the comprehensive demand of high response, high stability and long service life of the modern automobile brake system. Therefore, a new type of automobile brake caliper with simplified structure, reliable return, balanced force and easy integration is needed to improve the braking performance and system reliability.

[0006] The utility model aims at providing a kind of automobile brake caliper, by optimizing the integrated design of return mechanism and caliper body, solve the problem of uneven return force transmission, structural redundancy and insufficient durability in the prior art, realize more efficient, stable and durable brake response. Utility model content

[0007] The utility model relates to the field of automobile braking technology, and specifically relates to an automobile brake caliper. The utility model discloses a caliper body, a return mechanism is arranged in the caliper body, the return mechanism includes a guide sleeve fixedly installed on the inner wall of the caliper body, a driving block is slidably connected in the guide sleeve, one end of the driving block is connected with the inner wall of the caliper body through an elastic support, the other end of the driving block is fixedly connected with a push rod, one end of the push rod away from the driving block penetrates the caliper body and is in contact with a friction plate;A pressure equalizing assembly is arranged on the surface of the return mechanism, the pressure equalizing assembly includes an annular groove formed in the driving block, an adjusting block is slidably connected in the annular groove, a pressure plate is fixedly connected to one side of the adjusting block close to the push rod, one side of the pressure plate away from the adjusting block is attached to the surface of the push rod, a return spring is arranged on the surface of the pressure plate, one end of the return spring away from the pressure plate is connected with the inner wall of the caliper body;A heat dissipation assembly is arranged on the surface of the pressure equalizing assembly.

[0008] Preferably, the heat dissipation assembly includes a flow guide groove formed on the outer wall of the caliper body, a heat conduction sheet is embedded in the flow guide groove, the surface of the heat conduction sheet is fixedly connected with a heat dissipation fin, one end of the heat dissipation fin away from the heat conduction sheet extends to the outside of the caliper body, a ventilation hole is formed on the surface of the heat dissipation fin, a wind deflector is fixedly connected in the ventilation hole, and a turbulence protrusion is arranged on the surface of the wind deflector;A flow-through channel is arranged in the caliper body, one end of the flow-through channel is communicated with the flow guide groove, and the other end of the flow-through channel extends to the bottom of the caliper body and is communicated with the outside air.

[0009] Preferably, the elastic deformation of the elastic support is converted into the linear motion of the push rod through the sliding motion of the driving block inside the guide sleeve, thereby realizing the return function of the friction plate. Since the sliding connection between the driving block and the guide sleeve is a close fit, and the elastic supports are evenly distributed around the driving block, the force distribution of the push rod during the return process is more balanced, avoiding the uneven wear or jamming of the friction plate. In addition, the elastic support adopts a multi-layer corrugated structure design, and the corrugated layers are connected to each other through flexible connectors, and the surface of the flexible connector is provided with a damping coating, which can maintain stable elastic performance under high temperature and high humidity conditions, prolonging the service life.

[0010] Preferably, by adjusting the sliding motion of the adjusting block inside the annular groove, the pressure plate can apply uniform pressure to the push rod, further optimizing the force distribution of the push rod. The two ends of the return spring are connected with the pressure plate and the inner wall of the caliper body respectively, forming a closed force transmission path, ensuring that the push rod always maintains a stable motion trajectory during the return process. The return spring adopts a spiral winding structure, and the surface thereof is provided with anti-skid texture, which can effectively reduce the stress concentration phenomenon of the spring under high-frequency vibration, and improve the fatigue life. In addition, the middle part of the return spring is provided with a buffer pad, and the buffer pad is filled with energy-absorbing material, which can absorb impact energy under frequent braking conditions and reduce the risk of wear and tear.

[0011] Preferably, through the cooperation of the flow guide groove and the heat conducting sheet, the heat inside the caliper body can be quickly conducted to the heat dissipation fins, and dissipated to the external environment through the ventilation holes on the surface of the heat dissipation fins. The setting of the air guide plate can guide the airflow to flow in a specific direction, and the existence of the spoiler further enhances the turbulent effect of the airflow, improving the heat dissipation efficiency. The design of the flow-through channel enables external cold air to enter the caliper body through the flow guide groove, forming a circulating airflow, further improving the heat dissipation performance.

[0012] The utility model discloses a multi-layer corrugated structure design of elastic support and the damping coating of flexible connector solve the return force attenuation of prior art, and realize the even distribution of the force of push rod through the cooperation of adjusting block and pressure plate, avoid the occurrence of friction plate eccentric wear or jamming. The spiral winding structure of return spring and the design of anti-skid texture on the surface thereof effectively reduce the stress concentration phenomenon, prolong the life. In addition, the combination of flow guide groove, heat conducting sheet, heat dissipation fin and flow-through channel significantly improves the heat dissipation performance of caliper body, meets the demand of modern automobile to braking system high response, high stability and long life.

[0013] The utility model discloses a technical scheme through the integrated design of return mechanism and caliper body, simplifies the overall structure, reduces assembly procedure, reduces manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the utility model. Figure 2 It is the sectional structure schematic diagram of the utility model drive block. Figure 3 It is the structure schematic diagram of the utility model radiating fin. Figure 4 It is the A area enlarged schematic diagram of the utility model. Figure 1

[0015] The following marks are as follows: 1, caliper body;2, guide sleeve;3, drive block;4, elastic support piece;5, push rod;6, friction plate;7, annular groove;8, adjusting block;9, pressure plate;10, reset spring;11, flow guide groove;12, heat conduction sheet;13, radiating fin;14, ventilation hole;15, air deflector;16, turbulence protruding;17, flow channel. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0017] The following gives specific embodiments.

[0018] The utility model provides a kind of automobile brake caliper, the following is combined with attached Figure 1 To attached Figure 4 The specific embodiment of the utility model is described in detail;

[0019] As Figure 1 ​As shown, the automobile brake caliper of the utility model includes a caliper body 1, the caliper body 1 is the basic component of integral structure, and the inside is provided with a return mechanism, an equalizing assembly and a heat dissipation assembly; the return mechanism mainly includes a guide sleeve 2, a driving block 3, an elastic support 4 and a push rod 5, wherein the guide sleeve 2 is fixedly installed on the inner wall of the caliper body 1, the driving block 3 is slidingly connected inside the guide sleeve 2, one end of the driving block 3 is connected with the inner wall of the caliper body 1 through the elastic support 4, the other end is fixedly connected with the push rod 5, and the end of the push rod 5 away from the driving block 3 penetrates the caliper body 1 and contacts with a friction plate 6; the inner wall of the guide sleeve 2 and the outer wall of the driving block 3 are in close fitting relationship, so as to ensure that the driving block 3 does not appear deviation or shaking phenomenon in the sliding process inside the guide sleeve 2; the elastic support 4 adopts a multilayer corrugated structure design, the corrugated layers are connected with each other through flexible connecting pieces, the surface of the flexible connecting piece is coated with a damping coating, and the elastic attenuation under high temperature and high humidity environment can be effectively reduced; the fixed connection between the push rod 5 and the driving block 3 is realized through screw thread or welding, so as to ensure that the two are synchronous in the movement process;

[0020] The equalizing assembly is arranged on the surface of the return mechanism and is used for optimizing the stress distribution of the push rod 5; the equalizing assembly includes an annular groove 7 opened in the inside of the driving block 3, the inside of the annular groove 7 is slidingly connected with an adjusting block 8, one side of the adjusting block 8 close to the push rod 5 is fixedly connected with a pressure plate 9, and the side of the pressure plate 9 away from the adjusting block 8 is attached to the surface of the push rod 5; the surface of the pressure plate 9 is provided with a return spring 10, one end of the return spring 10 away from the pressure plate 9 is connected with the inner wall of the caliper body 1; the sliding connection between the adjusting block 8 and the annular groove 7 is realized through precision machining, so as to ensure that the adjusting block 8 can freely move inside the annular groove 7, while avoiding loosening or jamming phenomenon; the contact surface between the pressure plate 9 and the push rod 5 is subjected to polishing treatment, so as to reduce the friction coefficient and improve the movement stability; the return spring 10 adopts a spiral winding structure, and the surface is provided with anti-slip texture, which can reduce the stress concentration phenomenon under high-frequency vibration and prolong the service life; a buffer pad is arranged in the middle of the return spring 10, the inside of the buffer pad is filled with energy-absorbing material, which can absorb impact energy under frequent braking conditions and reduce the risk of wear and tear;

[0021] The heat dissipation assembly is arranged on the outer wall of the caliper body 1 to improve the heat dissipation performance of the caliper body 1. The heat dissipation assembly comprises a flow guide groove 11 arranged on the outer wall of the caliper body 1, a heat conduction sheet 12 embedded in the flow guide groove 11, and a heat dissipation fin 13 fixedly connected to the surface of the heat conduction sheet 12. The heat dissipation fin 13 extends to the outside of the caliper body 1 at the end away from the heat conduction sheet 12. The surface of the heat dissipation fin 13 is provided with a ventilation hole 14, and the inside of the ventilation hole 14 is fixedly connected with a wind deflector 15. The surface of the wind deflector 15 is provided with a turbulence protrusion 16. The embedded connection between the flow guide groove 11 and the heat conduction sheet 12 is achieved through interference fit, so as to ensure the close contact between the heat conduction sheet 12 and the flow guide groove 11, thereby improving the heat conduction efficiency. The heat dissipation fin 13 is optimally designed in shape, and the part extending to the outside of the caliper body 1 is in trapezoidal distribution to increase the heat dissipation area. The ventilation hole 14 is in oval shape, and the wind deflector 15 in the inside is fixed on the inner wall of the ventilation hole 14 by welding. The surface of the wind deflector 15 is provided with a plurality of turbulence protrusions 16. The height and spacing of the turbulence protrusions 16 are accurately calculated to enhance the turbulent effect of airflow and improve the heat dissipation efficiency.

[0022] The inside of the caliper body 1 is provided with a flow passage 17. One end of the flow passage 17 is communicated with the flow guide groove 11, and the other end extends to the bottom of the caliper body 1 and is communicated with the outside air. The design of the flow passage 17 enables the outside cold air to enter the inside of the caliper body 1 through the flow guide groove 11 to form a circulating airflow, thereby further improving the heat dissipation performance. The cross section of the flow passage 17 is rectangular, and the inner wall is polished to reduce the resistance in the airflow process.

[0023] In actual application, when the vehicle is braked, the brake fluid pushes the driving block 3 to slide in the guide sleeve 2 through the hydraulic system. The sliding movement of the driving block 3 drives the elastic support 4 to elastically deform, and the push rod 5 transmits the linear motion of the driving block 3 to the friction plate 6, so that the friction plate 6 contacts the brake disc to generate braking force. After the braking is completed, the elastic support 4 restores to the original state, and pushes the driving block 3 to slide reversely, thereby driving the push rod 5 to reset and making the friction plate 6 separate from the brake disc. Since the sliding connection between the driving block 3 and the guide sleeve 2 is in close fit, and the elastic supports 4 are uniformly distributed around the driving block 3, the force distribution of the push rod 5 in the resetting process is more balanced, and the eccentric wear or jamming phenomenon of the friction plate 6 due to uneven force is avoided.

[0024] The pressure equalizing assembly plays an auxiliary role in the resetting process of the push rod 5. When the push rod 5 resets, the adjusting block 8 slides in the annular groove 7. The movement of the adjusting block 8 drives the pressure plate 9 to apply uniform pressure to the push rod 5, thereby further optimizing the force distribution of the push rod 5. The two ends of the reset spring 10 are connected with the pressure plate 9 and the inner wall of the caliper body 1 respectively, forming a closed force transmission path to ensure that the push rod 5 always maintains a stable movement track in the resetting process.

[0025] The heat dissipation assembly continuously functions during braking; the heat generated by braking is conducted to the heat conduction fin 12 through the flow guide groove 11, and then transmitted to the heat dissipation fin 13 by the heat conduction fin 12, and dissipated to the external environment through the ventilation holes 14 on the surface of the heat dissipation fin 13; the air deflector 15 guides the airflow to flow in a specific direction, and the existence of the spoiler 16 further enhances the turbulent effect of the airflow, improving the heat dissipation efficiency; the design of the flow-through channel 17 enables external cold air to enter the caliper body 1 through the flow guide groove 11, forming a circulating airflow, further improving the heat dissipation performance;

[0026] Through the synergistic effect of the above structure and operating principle, the utility model realizes the efficient return, uniform stress distribution and excellent heat dissipation performance of the automobile brake caliper, meeting the demand of modern automobiles for high responsiveness, high stability and long service life of the braking system; In order to better enable relevant personnel in the technical field to fully understand and implement the utility model, the specific implementation principle of the utility model is supplemented below in combination with specific application scenarios;

[0027] In actual application, when braking is needed during vehicle driving, the driver steps on the brake pedal, and the hydraulic system pushes the driving block 3 to slide along the inside of the guide sleeve 2; The close fitting relationship between the guide sleeve 2 and the driving block 3 ensures the stability of the sliding process, avoiding uneven force distribution caused by deviation or shaking; The sliding movement of the driving block 3 causes the elastic support 4 to deform elastically, and at the same time transmits linear motion to the push rod 5, which further pushes the friction plate 6 into contact with the brake disc, thereby generating braking force; In this process, the multi-layer corrugated structure design of the elastic support 4 plays a key role, and the damping coating on the surface of the flexible connecting piece can effectively reduce the elastic attenuation in high temperature and high humidity environment, ensuring the long-term stability of the return force;

[0028] When the braking is over, the pressure of the hydraulic system is released, and the elastic support 4 returns to its original state, pushing the driving block 3 to slide reversely; The reverse movement of the driving block 3 drives the friction plate 6 to separate from the brake disc through the push rod 5, completing the return operation; Since the elastic support 4 is uniformly distributed around the driving block 3, the force distribution of the push rod 5 during the return process is more balanced, avoiding the eccentric wear or sticking phenomenon of the friction plate 6 due to uneven force; In addition, the fixed connection mode between the push rod 5 and the driving block 3 through threading or welding ensures that they remain synchronous during movement, further improving the reliability of the return;

[0029] At the same time, the equalizing assembly plays an auxiliary optimization role in the return process of the push rod 5; the adjusting block 8 slides inside the annular groove 7 and applies uniform pressure on the push rod 5 through the pressure plate 9, further improving the stress distribution of the push rod 5; the reset spring 10 is connected with the pressure plate 9 and the inner wall of the caliper body 1 at both ends, forming a closed force transmission path to ensure that the push rod 5 always maintains a stable motion trajectory during the return process; the reset spring 10 adopts a spiral winding structure, and the anti-slip texture on the surface can reduce stress concentration under high-frequency vibration, prolonging the service life; the energy-absorbing material filled in the buffer pad absorbs impact energy under frequent braking conditions, reducing the risk of wear and tear, thereby improving the durability of the overall system;

[0030] During braking, the heat dissipation assembly continuously functions to solve the heat problem generated by braking; the flow guide groove 11 and the heat conducting sheet 12 are in close contact through interference fit, ensuring that heat can be quickly conducted from the caliper body 1 to the heat conducting sheet 12; the heat conducting sheet 12 further transfers heat to the heat dissipation fins 13, which are dissipated to the external environment through the ventilation holes 14 on the surface of the heat dissipation fins 13; the air deflector 15 guides the airflow to flow in a specific direction, and the presence of the spoiler 16 enhances the turbulent effect of the airflow, significantly improving the heat dissipation efficiency; the design of the flow-through channel 17 allows external cold air to enter the caliper body 1 through the flow guide groove 11, forming a circulating airflow, further improving the heat dissipation performance; the rectangular cross-section of the flow-through channel 17 and the polishing treatment of its inner wall reduce the resistance during airflow, ensuring the maximization of heat dissipation effect;

[0031] Through the synergistic effect of the above structure and operating principle, the utility model realizes the comprehensive improvement of the automobile brake caliper in terms of efficient return, uniform stress distribution and excellent heat dissipation performance; Specifically, the multi-layer corrugated structure design of the elastic support 4 combined with the damping coating of the flexible connecting piece solves the problem of return force attenuation in the prior art; the cooperation of the adjusting block 8 and the pressure plate 9 optimizes the stress distribution of the push rod 5, avoiding the occurrence of friction plate 6 eccentric wear or jamming phenomenon; the combination of the flow guide groove 11, the heat conducting sheet 12, the heat dissipation fins 13 and the flow-through channel 17 significantly improves the heat dissipation performance of the caliper body 1, meeting the demand of modern automobiles for high responsiveness, high stability and long service life of the braking system;

[0032] In summary, the technical scheme of the utility model optimizes the integrated design of the return mechanism and the caliper body 1, simplifies the overall structure, reduces the assembly process and manufacturing cost; the connection relationship between the parts is clear, the positional relationship is reasonable, and the processing and maintenance are convenient, which has high practicability and popularization value.

[0033] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A brake caliper for a vehicle, characterized by: The utility model provides a caliper body (1) is provided with the return mechanism in the inside, the return mechanism includes the guide sleeve (2) fixedly installed on the inner wall of caliper body (1), the inside sliding connection of guide sleeve (2) has drive block (3), one end of drive block (3) is connected with the inner wall of caliper body (1) through elastic support (4), the other end of drive block (3) is fixedly connected with push rod (5), the one end of push rod (5) away from drive block (3) penetrates caliper body (1) and is contacted with friction plate (6), the surface of return mechanism is provided with equal pressure subassembly, equal pressure subassembly includes annular groove (7) of setting in the inside of drive block (3), the inside sliding connection of annular groove (7) has adjusting block (8), the side fixedly connected with pressure plate (9) of adjusting block (8) near push rod (5), the surface of pressure plate (9) is pasted with the surface of push rod (5) away from adjusting block (8) side, the surface of pressure plate (9) is provided with reset spring (10), the one end of reset spring (10) away from pressure plate (9) is connected with the inner wall of caliper body (1), the surface of equal pressure subassembly is provided with heat dissipation subassembly.

2. A brake caliper for a vehicle according to claim 1, characterized in that: The heat dissipation subassembly includes a flow guide groove (11) formed on the outer wall of the caliper body (1), a heat conduction sheet (12) embedded in the flow guide groove (11), a heat dissipation fin (13) fixedly connected to the surface of the heat conduction sheet (12), the heat dissipation fin (13) extending to the outside of the caliper body (1) from one end thereof away from the heat conduction sheet (12), a ventilation hole (14) formed on the surface of the heat dissipation fin (13), and a wind deflector (15) fixedly connected to the inside of the ventilation hole (14), the surface of the wind deflector (15) being provided with a turbulence protrusion (16).

3. The automotive brake caliper of claim 1, wherein: The inside of the caliper body (1) is provided with a flow-through channel (17), one end of the flow-through channel (17) being in communication with the flow guide groove (11), and the other end of the flow-through channel (17) extending to the bottom of the caliper body (1) and being in communication with the outside air.

4. The automotive brake caliper of claim 1, wherein: The elastic support (4) adopts a multi-layer corrugated structure design, the corrugated layers being connected to each other through flexible connectors, the surface of the flexible connector being provided with a damping coating.

5. The automotive brake caliper of claim 1, wherein: The reset spring (10) adopts a spiral winding structure, the surface of the reset spring (10) being provided with anti-slip texture.

6. A brake caliper for a vehicle according to claim 5, wherein: The middle part of the reset spring (10) is provided with a buffer pad, the inside of the buffer pad being filled with energy-absorbing material.

7. The automotive brake caliper of claim 1, wherein: The fixed connection between the push rod (5) and the drive block (3) is realized through threading or welding.

8. The automotive brake caliper of claim 1, wherein: The sliding connection between the adjusting block (8) and the annular groove (7) is realized through precision machining.

9. The automotive brake caliper of claim 1, wherein: The contact surface between the pressure plate (9) and the push rod (5) is subjected to polishing treatment.

10. The automotive brake caliper of claim 2, wherein: The embedded connection between the flow guide groove (11) and the heat conduction sheet (12) is realized through interference fit.

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