A brake caliper with synchronous wear of the friction plates

Abstract

The present application relates to the technical field of automobile brake, and particularly relates to a brake caliper with synchronous wear of friction plates, comprising a caliper body, friction plates, a pushing mechanism and a bidirectional friction mechanism, wherein the bidirectional friction mechanism comprises a synchronization unit for controlling two friction plates to simultaneously abut against a brake disc; the present application can solve the following problems existing in the prior art: the hydraulic reaction force is relied on to push the caliper body to float to realize double-side braking of the brake disc, which causes the two friction plates to have action lag, and the two friction plates cannot simultaneously contact the brake disc, resulting in non-synchronous wear of the two friction plates; the friction plates cannot self-adaptively level, which causes the friction plates to fail to self-adaptively form surface contact when abutting against the brake disc, and local eccentric wear is prone to occur, which aggravates the wear speed of the friction plates and shortens the service life of the friction plates; the present application solves the core problems of non-synchronous wear and eccentric wear of the friction plates through the cooperative action of the lever synchronous driving of the bidirectional friction mechanism and the self-adaptive leveling of the pushing mechanism.

Description

Technical Field

[0001] This invention relates to the field of automotive brake technology, and in particular to a brake caliper with synchronous wear of friction pads. Background Technology

[0002] Brake calipers decelerate and stop vehicles by driving friction pads to clamp the brake disc. Ideally, the inner and outer friction pads should contact the brake disc simultaneously with equal clamping force to achieve synchronous wear. Synchronous wear of the friction pads can extend their service life and replacement cycle. Furthermore, synchronous wear ensures equal braking torque on both sides of the brake disc, preventing issues such as brake drift, vibration, and noise, thus improving vehicle driving safety.

[0003] Brake calipers are divided into fixed caliper disc brakes and floating caliper disc brakes. In the floating caliper disc brake, the caliper body can slide axially along the guide pin. The brake fluid generates hydraulic pressure to push the piston to press the inner friction pad first. The reaction force drives the outer friction pad to stick to the brake disc through the caliper body. The friction between the two friction pads and the brake disc is achieved by relying on the floating of the caliper body, thus realizing braking.

[0004] Numerous technical solutions for floating caliper disc brakes have been disclosed in the prior art. For example, Chinese Patent CN107989932A discloses a brake caliper for a floating caliper disc brake, comprising a caliper body forming a U-shaped structure, a first brake arm, and a second brake arm. The first and second brake arms are located on opposite sides of the brake disc, and both the first and second brake arms are provided with friction pads that can rub against the brake disc. The second brake arm has an oil chamber for mounting a movable piston, and a rubber air bladder is also provided on the chamber arm of the oil chamber, located axially above the piston's movement. In operation, the pressure of the oil acts on the rubber air bladder, which, through its elasticity, quickly transmits the pressure to the caliper body and the piston, enabling the caliper body and the piston to quickly clamp and brake the brake disc, thus improving braking efficiency.

[0005] However, the aforementioned existing technologies still have some shortcomings in practical use: 1. The existing technology mentioned above adopts a traditional floating caliper disc structure, which relies on hydraulic reaction force to push the caliper body to float and achieve double-sided braking of the brake disc. However, the friction pad that first contacts the brake disc and the floating of the caliper body causes another friction pad that contacts the brake disc to move with a lag, which cannot guarantee that the two friction pads will contact the brake disc at the same time. This results in asynchronous wear of the friction pads on both sides, which can easily lead to the phenomenon that one side of the friction pad is over-worn while the other side still has some spare wear. The friction pad with spare wear needs to be replaced at the same time as the completely worn friction pad, thus increasing the maintenance cost.

[0006] 2. Because the friction pads and pistons in the above-mentioned prior art are rigidly fixedly connected, they cannot be self-adjusted and therefore cannot compensate for installation errors and minor deformations of the brake disc. As a result, when the friction pads and brake discs come into contact, they cannot self-adjust to form surface contact, which easily leads to local uneven wear. This not only accelerates the wear rate of the friction pads and shortens their service life, but also easily causes problems such as brake vibration and squealing, affecting driving comfort and braking safety.

[0007] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing brake calipers. Summary of the Invention

[0008] To address the issue that the two friction pads cannot simultaneously contact the brake disc, this invention provides a brake caliper with synchronous friction pad wear, comprising a caliper body, the opening of which is engaged with the outside of the brake disc; a bracket, fixedly mounted on the vehicle steering knuckle, with the caliper body slidably mounted on the bracket; friction pads, mounted on the inner sides of two parallel sections at the caliper body opening via a pushing mechanism, the friction pads being used to contact and rub against the brake disc to achieve braking; and a bidirectional friction mechanism, disposed on the caliper body, used to control the friction pads on both sides of the brake disc to simultaneously contact and rub against the brake disc. The bidirectional friction mechanism includes a synchronization unit installed on the outer wall of the clamp body. The synchronization unit is used to drive the clamp body to float in the opposite direction when the friction pad on one side moves closer to the brake disc, so that the clamp body drives the other friction pad to move closer to the brake disc at the same time, so that the two friction pads rub against the brake disc at the same time, that is, the two friction pads wear synchronously.

[0009] As a preferred embodiment of the present invention, the synchronization unit includes a cylinder mounted on the outer wall of the clamp body, a piston for pushing and pulling back the friction plate is slidably disposed inside the cylinder, and a lever assembly is movably disposed on the outer wall of the piston. The lever assembly is fixedly connected to the bracket and movably connected to the clamp body. The hydraulic oil enters the cylinder and pressurizes the piston. When the piston drives the friction pad to move towards the brake disc, the lever assembly drives the clamp to move in the opposite direction to the friction pad. The clamp drives another friction pad to move synchronously relative to the friction pad and to collide and rub against the brake disc synchronously.

[0010] As a preferred embodiment of the present invention, the lever assembly includes a rocker arm hinged to the outer wall of the piston, a fixing pin mounted on the bracket via a positioning frame, a traction pin provided on the side wall of the clamp body via a force-bearing block, and an elongated hole provided on the rocker arm for sliding through the fixing pin and the traction pin. When the piston drives the friction pad to move toward the brake disc, the piston drives the rocker arm to rotate around the hinge point of the two. The end of the rocker arm away from the piston drives the caliper and another friction pad to move in the opposite direction through the traction pin and the force block, so that the two friction pads can synchronously contact the brake disc.

[0011] As a preferred embodiment of the present invention, the side wall of the cylinder is provided with a through hole for the rocker arm to pass through, and the inside of the side wall of the cylinder is provided with a sliding groove communicating with the through hole, and a sealing plate is slidably assembled inside the sliding groove. The inner wall of the sliding groove is provided with a rectangular insert groove, and an anti-overflow rubber strip is interference-fitted in the rectangular insert groove. The sealing lip of the anti-overflow rubber strip points to the sealing plate and elastically abuts against the side wall of the sealing plate to form a pressure self-tightening seal. When the oil pressure in the cylinder increases, the oil pressure acts on the back of the sealing lip of the anti-overflow rubber strip, pushing the sealing lip to press further against the surface of the sealing plate, so as to achieve a sealing effect that is enhanced with the increase of pressure.

[0012] As a preferred embodiment of the present invention, the rocker arm has a connecting column that rotates through the sealing plate. A bushing is interference-fitted into the central hole of the sealing plate. At least one annular sealing lip is provided on the inner circumferential surface of the bushing. The annular sealing lip is interference-fitted with the outer wall of the connecting column to form a rotary seal. When the oil pressure in the cylinder increases, the oil pressure acts on the annular sealing lip, causing the bushing to extend to one side inside the cylinder to support the outside, further achieving a sealing effect that increases with pressure and preventing hydraulic oil from leaking from the mating surface between the bushing and the sealing plate.

[0013] As a preferred embodiment of the present invention, two anti-fouling covers are installed on the outer wall of the clamp body, which are placed outside the swing arm to isolate external dust and oil stains, and the positioning frame passes through the anti-fouling covers; When the clamp moves, it drives the anti-fouling cover to move synchronously. Therefore, the anti-fouling cover has a connecting hole through which the positioning frame passes. A telescopic plate is installed in the connecting hole, and the positioning frame passes through the telescopic plate. When the clamp moves the anti-fouling cover, the positioning frame remains fixed, so that the telescopic plate can adapt to its extension and retraction, avoid interference, and ensure that the anti-fouling effect is not affected.

[0014] As a preferred embodiment of the present invention, the pushing mechanism includes a support column installed on the side of the piston near the friction plate, a support plate being movably mounted on the end of the support column away from the piston via a ball pin, the friction plate being disposed on the support plate, and a balancing component being disposed between the support column and the support plate to make the distance between multiple points of the friction plate and the brake disc equal through the support plate.

[0015] As a preferred embodiment of the present invention, the balancing assembly includes a stabilizing ring fixedly sleeved on the outer wall of the support column, and a plurality of supporting springs are circumferentially and uniformly hinged between the side of the stabilizing ring away from the piston and the support plate.

[0016] As a preferred embodiment of the present invention, the balancing assembly further includes a limiting cylinder installed on the side of the stabilizing ring away from the piston. There is a movable gap between the limiting cylinder and the support plate, so that the support plate can only move within the movable gap without dead angles, which is used for the support plate to drive the friction plate to adaptively adjust the angle.

[0017] In summary, this application includes the following beneficial technical effects: I. This invention fundamentally solves the core problems of asynchronous and uneven wear of friction pads by using the lever synchronous drive of the bidirectional friction mechanism and the adaptive leveling synergy of the pushing mechanism. It achieves synchronous contact, synchronous wear, and uniform wear of the friction pads on both sides of the brake disc, significantly improving braking stability and safety, greatly extending the service life of the friction pads, and reducing the vehicle's operation and maintenance costs.

[0018] Second, when one of the friction pads is hydraulically driven to move closer to the brake disc, the lever assembly of the bidirectional friction mechanism synchronously drives the clamp body to move the other friction pad in the opposite direction, so that the two friction pads simultaneously abut against both sides of the brake disc, thereby achieving synchronous wear of the two friction pads. This can improve braking stability and avoid the increased maintenance costs caused by the asynchronous wear of the two friction pads, which would require the incompletely worn friction pad to be replaced at the same time as the fully worn friction pad.

[0019] Third, this invention, through a ball-pin hinge and a multi-spring balanced pushing mechanism, enables the friction pads to adaptively adjust their angle after contacting the brake disc, ensuring full-surface contact between the friction pads and the brake disc. Furthermore, the simultaneous contact of both friction pads with the brake disc surface not only achieves synchronous wear of the two friction pads but also ensures uniform wear across the entire surface of the brake disc. This prevents uneven wear of the friction pads from accelerating the wear rate and shortening their service life. Moreover, the surface contact friction further ensures braking stability and reduces brake vibration and noise. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure between the present invention and the brake disc.

[0022] Figure 2 This is a schematic diagram of the structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure between the clamp body, friction plate and bidirectional friction mechanism of the present invention.

[0024] Figure 4 This is a schematic diagram of the lever assembly of the present invention.

[0025] Figure 5 This is the present invention. Figure 4 A magnified view of part A.

[0026] Figure 6 This is a schematic diagram of the initial state of the lever assembly of the present invention.

[0027] Figure 7 This is a schematic diagram of the working state of the lever assembly of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure between the clamp body, friction plate and pushing mechanism of the present invention.

[0029] Figure 9 This is a schematic diagram of the pushing mechanism of the present invention.

[0030] In the diagram, 1. clamp body; 11. anti-fouling cover; 12. telescopic plate; 13. support lug; 2. Brake disc; 3. Support frame; 31. Extension tube; 4. Friction plates; 5. Pushing mechanism; 51. Support column; 52. Support plate; 53. Balancing assembly; 531. Stabilizing ring; 532. Support spring; 533. Limiting cylinder; 6. Bidirectional friction mechanism; 61. Synchronization unit; 62. Cylinder; 621. Through hole; 622. Sealing plate; 623. Anti-overflow rubber strip; 624. Liquid supply cylinder; 625. Bushing; 63. Piston; 64. Lever assembly; 641. Linkage block; 642. Rocker arm; 643. Positioning frame; 644. Fixing pin; 645. Force-bearing block; 646. Traction pin; 647. Long hole; 648. Connecting column. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-9 The embodiments of the present invention will be described in detail below.

[0032] This application discloses a brake caliper with synchronous wear of friction pads. It should be noted that the brake caliper with synchronous wear of friction pads in this application is mainly used in the process of bidirectional synchronous friction braking of the brake disc 2. In terms of technical effect, it can make the friction pads 4 on both sides of the brake disc 2 approach each other synchronously and abut against the side wall of the brake disc 2 at the same time, thereby realizing the synchronous wear of the two friction pads 4 and improving braking stability. Furthermore, this application can also make the friction pads 4 contact the surface of the brake disc 2, avoiding the friction pads 4 from tilting and wearing, which accelerates the wear rate and shortens their service life.

[0033] Reference Figure 1 and Figure 2As shown, a brake caliper with synchronous wear of friction pads includes a caliper body 1, the opening of which is engaged with the outside of a brake disc 2; a bracket 3, which is fixedly mounted on the vehicle steering knuckle, and the caliper body 1 is slidably mounted on the bracket 3; friction pads 4, which are mounted on the inner sides of two parallel sections at the opening of the caliper body 1 via a pushing mechanism 5, and are used to rub against the brake disc 2 to achieve braking; a bidirectional friction mechanism 6, which is disposed on the caliper body 1, and is used to control the friction pads 4 on both sides of the brake disc 2 to rub against the brake disc 2 simultaneously; the bidirectional friction mechanism 6 includes a synchronization unit 61 mounted on the outer wall of the caliper body 1, which drives the caliper body 1 to float in the opposite direction when the friction pad 4 on one side moves closer to the brake disc 2, so that the caliper body 1 drives the other friction pad 4 to move closer to the brake disc 2 at the same time, so that the two friction pads 4 rub against the brake disc 2 at the same time, that is, the two friction pads 4 wear synchronously.

[0034] It should be noted that the bracket 3 is equipped with several extension tubes 31, and the clamp body 1 is provided with lugs 13 corresponding to the positions of the extension tubes 31. The lugs 13 and the extension tubes 31 are connected in a detachable manner, preferably by bolts with a self-locking function.

[0035] In the specific implementation process, the caliper 1 is slidably mounted on the bracket 3, and the two friction pads 4 are respectively located on both sides of the brake disc 2. Then, the cylinder 62 is connected to the output end of the hydraulic system. When the car brakes, the hydraulic oil enters the cylinder 62 and pressurizes the piston 63. The piston 63 pushes one side of the friction pad 4 towards the brake disc 2 through the pushing mechanism 5. The friction pad 4 drives the caliper 1 and the other friction pad 4 to move in opposite directions through the bidirectional friction mechanism 6. The initial distance between the two friction pads 4 and the brake disc 2 is equal. Therefore, the two friction pads 4 move the same distance to one side of the brake disc 2. That is, the two friction pads 4 simultaneously abut against both sides of the brake disc 2, thereby achieving synchronous wear of the two friction pads 4. This avoids the situation where the two friction pads 4 wear asynchronously, which would cause the incompletely worn friction pad 4 to need to be replaced at the same time as the completely worn friction pad 4, increasing maintenance costs.

[0036] Reference Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, in order to facilitate the synchronous friction between the two friction pads 4 and the brake disc 2, in this embodiment, the synchronization unit 61 includes a cylinder 62 mounted on the outer wall of the caliper body 1. The cylinder 62 is located on the side of the brake disc 2 away from the vehicle. A piston 63 for pushing and pulling back the friction pads 4 is slidably arranged inside the cylinder 62. A lever assembly 64 is movably arranged on the outer wall of the piston 63. The lever assembly 64 is fixedly connected to the bracket 3 and movably connected to the caliper body 1. Hydraulic oil enters the cylinder 62 to pressurize the piston 63. When the piston 63 drives the friction pad 4 to move towards the brake disc 2, the lever assembly 64 drives the caliper body 1 to move in the opposite direction to the friction pad 4. The caliper body 1 drives the other friction pad 4 to move synchronously relative to the friction pad 4 and to synchronously rub against the brake disc 2.

[0037] Furthermore, in this embodiment, the lever assembly 64 includes a linkage block 641 installed on the side of the piston 63 away from the friction plate 4. The linkage block 641 is hinged with a rocker arm 642 on both the upper and lower sides. The rocker arm 642 is movably installed on the outer wall of the piston 63. A fixing pin 644 is installed on the bracket 3 through the positioning frame 643. A traction pin 646 is provided on the side wall of the clamp body 1 away from the friction plate 4 through the force block 645. The rocker arm 642 has an elongated hole 647 that slides through the fixing pin 644 and the traction pin 646. In the specific implementation process, when piston 63 drives friction pad 4 to move towards brake disc 2, piston 63 drives rocker arm 642 to rotate around the hinge point of rocker arm 642 and linkage block 641. The end of rocker arm 642 away from piston 63 drives caliper 1 and another friction pad 4 to move in the opposite direction through traction pin 646 and force block 645. Figure 7 As shown in the figure, the two friction pads 4 and the brake disc 2 are synchronously contacted, thereby ensuring that the two friction pads 4 wear synchronously. It should be noted that the elongated hole 647 is an oblong hole and is opened along the length of the rocker arm 642. When the rocker arm 642 rotates, the fixing pin 644 and the traction pin 646 can adaptively slide within the elongated hole 647 to avoid interference. When the clamp body 1 moves, it drives the cylinder 62 to move synchronously. Therefore, the end of the cylinder 62 away from the clamp body 1 is slidably installed with the liquid supply cylinder 624 through the sealing sleeve.

[0038] Reference Figure 5As shown, it should be further explained that the side wall of the cylinder 62 has two through holes 621 for the rocker arm 642 to pass through. The inside of the side wall of the cylinder 62 has two sliding grooves that communicate with the through holes 621. A sealing plate 622 is slidably fitted inside the sliding groove. A rectangular insert groove is formed on the inner wall of the sliding groove. An anti-overflow rubber strip 623 is interference-fitted in the rectangular insert groove. The sealing lip of the anti-overflow rubber strip 623 points towards the sealing plate 622 and elastically abuts against the side wall of the sealing plate 622 to form a pressure self-tightening seal. When the oil pressure inside the cylinder 62 increases, the oil pressure acts on the back of the sealing lip of the anti-overflow rubber strip 623, pushing the sealing lip to press further against the surface of the sealing plate 622, thereby achieving a sealing effect that increases with increasing pressure.

[0039] Furthermore, in this embodiment, the rocker arm 642 has a connecting post 648 that rotates through the sealing plate 622. A bushing 625 is interference-fitted into the central hole of the sealing plate 622. The inner circumferential surface of the bushing 625 is provided with at least one annular sealing lip. The annular sealing lip is interference-fitted with the outer wall of the connecting post 648 to form a rotary seal. When the oil pressure in the cylinder 62 increases, the oil pressure acts on the annular sealing lip, causing the bushing 625 to extend outward on one side inside the cylinder 62, further achieving a sealing effect that is enhanced with increasing pressure, preventing hydraulic oil from leaking from the mating surface between the bushing 625 and the sealing plate 622. Furthermore, the sealing sleeve, anti-overflow rubber strip 623, and bushing 625 are preferably hydrogenated nitrile rubber, which has excellent wear resistance, oil resistance, and temperature resistance. It is commonly used in hydraulic seals and does not require frequent replacement. During vehicle maintenance, wear parts are replaced regularly, typically including friction plates, sealing sleeves, and anti-overflow rubber strips. The wear of moving parts such as friction plate 4, rocker arm 642, traction pin 646, and retaining pin 644 is also checked.

[0040] Furthermore, in this embodiment, two anti-fouling covers 11 are installed on the outer wall of the clamp body 1, which are placed outside the swing arm 642 to isolate external dust and oil. The positioning frame 643 passes through the anti-fouling cover 11. When the clamp body 1 moves, it drives the anti-fouling cover 11 to move synchronously. Therefore, the anti-fouling cover 11 has a connecting hole through which the positioning frame 643 passes. A telescopic plate 12 is provided in the connecting hole, and the positioning frame 643 passes through the telescopic plate 12. When the clamp body 1 drives the anti-fouling cover 11 to move, the positioning frame 643 remains fixed, so that the telescopic plate 12 adapts to the extension and retraction, avoiding interference and ensuring that the anti-fouling effect is not affected.

[0041] Reference Figure 8 and Figure 9As shown, in order to facilitate surface contact friction between the friction pad 4 and the brake disc 2 and avoid slight tilting wear of the friction pad 4, a pushing mechanism 5 is also provided in this embodiment. Specifically, the pushing mechanism 5 includes a support column 51 installed on the side of the piston 63 near the friction pad 4. A support plate 52 is movably installed on the end of the support column 51 away from the piston 63 through a ball pin. The friction pad 4 is disposed on the support plate 52. A balancing component 53 is provided between the support column 51 and the support plate 52 to make the distance between multiple points of the friction pad 4 and the brake disc 2 equal through the support plate 52.

[0042] Furthermore, in this embodiment, the balancing assembly 53 includes a stabilizing ring 531 fixedly sleeved on the outer wall of the support column 51, and a plurality of supporting springs 532 are circumferentially and evenly hinged between the side of the stabilizing ring 531 away from the piston 63 and the support plate 52.

[0043] Furthermore, the balancing assembly 53 also includes a limiting cylinder 533 installed on the side of the stabilizing ring 531 away from the piston 63. The limiting cylinder 533 and the support plate 52 have a movable gap, so that the support plate 52 can only move within the movable gap without dead angles, which is used for the support plate 52 to drive the friction plate 4 to adaptively adjust the angle.

[0044] In the specific implementation process, multiple circumferentially distributed support springs 532 act on the support plate 52 simultaneously, so that the support plate 52 is subjected to equal forces in multiple directions, thereby the support plate 52 drives the friction plate 4 to remain vertical in the initial state, that is, parallel to the brake disc 2.

[0045] When the friction pad 4 contacts the brake disc 2, if there is a slight angular misalignment in the installation of the friction pad 4 or the brake disc 2, the friction pad 4 cannot achieve initial surface contact with the brake disc 2. Therefore, the friction pad 4 will generate friction with the brake disc 2 at a slight tilt angle, and synchronous wear of the friction pad 4 will not be achieved. To avoid this problem, in this embodiment, when the friction pad 4 initially contacts the brake disc 2, the friction pad 4 adaptively rotates around the ball pin as the center. The rotation amplitude of the friction pad 4 is limited by the limiting sleeve 533, that is, it can only be adjusted within the movable gap. As the friction pad 4 continues to move towards the brake disc 2... As the brake disc 2 is pushed to one side, the friction pad 4 is adaptively adjusted by the resistance of the brake disc 2 and gradually comes into surface contact with the brake disc 2. Then, both friction pads 4 simultaneously come into surface contact with the brake disc 2. This not only achieves synchronous wear of the two friction pads 4, but also ensures that the friction pads 4 and the brake disc 2 wear on the entire surface, and that the friction force between the two friction pads 4 and the brake disc 2 is equal, that is, the wear rate is consistent. This avoids the two friction pads 4 from wearing out asynchronously and needing to be replaced at the same time, which would increase maintenance costs. It also prevents the friction pads 4 from tilting and wearing, which would accelerate the wear rate and shorten their service life. Furthermore, the surface contact friction can further ensure braking stability.

[0046] During work: When the car brakes, hydraulic oil enters the cylinder 62 and pressurizes the piston 63. The piston 63 drives the friction pad 4 to move towards the brake disc 2. The piston 63 also drives the rocker arm 642 to rotate around the hinge point of the rocker arm 642 and the linkage block 641. The end of the rocker arm 642 away from the piston 63 drives the caliper body 1 and the other friction pad 4 to move in opposite directions through the traction pin 646 and the force block 645, so that the two friction pads 4 can contact the brake disc 2 synchronously, thereby ensuring that the two friction pads 4 wear synchronously.

[0047] When initially contacting the brake disc 2, the friction pad 4 is resisted by the brake disc 2 and adaptively adjusts around the ball pin as the center, gradually making surface contact with the brake disc 2. Then, both friction pads 4 simultaneously make surface contact with the brake disc 2, thereby not only achieving synchronous wear of the two friction pads 4, but also ensuring that the friction pads 4 and the brake disc 2 wear on the same surface, thus preventing the friction pads 4 from tilting and wearing, which would accelerate the wear rate and shorten their service life. Furthermore, the surface contact friction can further ensure braking stability.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A brake caliper with synchronous wear of friction plates, characterized in that, include: The clamp body (1) has its opening secured to the outside of the brake disc (2); The bracket (3) is fixedly mounted on the vehicle steering knuckle, and the clamp body (1) is slidably mounted on the bracket (3); The friction pad (4) is installed on the inner side of the two parallel sections at the opening of the caliper (1) by a pushing mechanism (5). The friction pad (4) is used to rub against the brake disc (2) to achieve braking. A bidirectional friction mechanism (6) is set on the caliper body (1) to control the friction pads (4) on both sides of the brake disc (2) to simultaneously rub against the brake disc (2); The bidirectional friction mechanism (6) includes a synchronization unit (61) installed on the outer wall of the clamp body (1). The synchronization unit (61) is used to drive the clamp body (1) to float in the opposite direction when the friction plate (4) on one side moves closer to the brake disc (2), so that the clamp body (1) drives the other friction plate (4) to move closer to the brake disc (2) at the same time, so that the two friction plates (4) and the brake disc (2) rub against each other at the same time, that is, the two friction plates (4) wear synchronously.

2. The brake caliper with synchronous wear of friction plates according to claim 1, characterized in that: The synchronization unit (61) includes a cylinder (62) installed on the outer wall of the clamp body (1). A piston (63) for pushing and pulling the friction plate (4) is slidably arranged inside the cylinder (62). A lever assembly (64) is movably arranged on the outer wall of the piston (63). The lever assembly (64) is fixedly connected to the bracket (3) and movably connected to the clamp body (1). The hydraulic oil enters the cylinder (62) and pressurizes the piston (63). When the piston (63) drives the friction plate (4) to move toward the brake disc (2), the lever assembly (64) drives the clamp (1) to move in the opposite direction to the friction plate (4). The clamp (1) drives another friction plate (4) and the friction plate (4) to move synchronously relative to each other and to collide and rub against the brake disc (2).

3. A brake caliper with synchronized wear of friction plates according to claim 2, characterized in that: The lever assembly (64) includes a rocker arm (642) hinged to the outer wall of the piston (63), a fixing pin (644) mounted on the bracket (3) via a positioning frame (643), a traction pin (646) provided on the side wall of the clamp body (1) via a force-bearing block (645), and an elongated hole (647) on the rocker arm (642) through which the fixing pin (644) and the traction pin (646) slide; the rocker arm (642) has two elongated holes for the fixing pin and the traction pin to slide through respectively; When the piston (63) drives the friction plate (4) to move toward the brake disc (2), the piston (63) drives the rocker arm (642) to rotate around the hinge point of the two. The end of the rocker arm (642) away from the piston (63) drives the caliper (1) and the other friction plate (4) to move in opposite directions through the traction pin (646) and the force block (645), so that the two friction plates (4) collide synchronously with the brake disc (2).

4. A brake caliper with synchronous wear of friction plates according to claim 2, characterized in that: The pushing mechanism (5) includes a support column (51) installed on the side of the piston (63) near the friction plate (4). A support plate (52) is movably installed on the end of the support column (51) away from the piston (63) via a ball pin. The friction plate (4) is set on the support plate (52). A balancing component (53) is provided between the support column (51) and the support plate (52) to make the distance between multiple points of the friction plate (4) and the brake disc (2) equal through the support plate (52).

5. A brake caliper with synchronous wear of friction plates according to claim 2, characterized in that: The cylinder (62) has a through hole (621) for passing through the rocker arm (642) on its side wall, and a sliding groove connected to the through hole (621) is provided inside the side wall of the cylinder (62). A sealing plate (622) is slidably assembled inside the sliding groove. The inner wall of the sliding groove is provided with a rectangular insert groove, and an anti-overflow rubber strip (623) is interference-fitted in the rectangular insert groove. The sealing lip of the anti-overflow rubber strip (623) points to the sealing plate (622) and elastically abuts against the side wall of the sealing plate (622) to form a pressure self-tightening seal. When the oil pressure in the cylinder (62) increases, the oil pressure acts on the back of the sealing lip of the anti-overflow rubber strip (623), pushing the sealing lip to press further against the surface of the sealing plate (622), thereby achieving a sealing effect that increases with pressure.

6. A brake caliper with synchronous wear of friction plates according to claim 5, characterized in that: The rocker arm (642) has a connecting post (648) that rotates through the sealing plate (622). A bushing (625) is interference-fitted into the central hole of the sealing plate (622). The inner circumferential surface of the bushing (625) is provided with at least one annular sealing lip. The annular sealing lip is interference-fitted with the outer wall of the connecting post (648) to form a rotary seal. When the oil pressure in the cylinder (62) increases, the oil pressure acts on the annular sealing lip, causing the bushing (625) to extend to the outside of the cylinder (62), further achieving a sealing effect that is enhanced with the increase of pressure, and preventing hydraulic oil from leaking from the joint surface between the bushing (625) and the sealing plate (622).

7. A brake caliper with synchronous wear of friction plates according to claim 3, characterized in that: The clamp body (1) has two anti-fouling covers (11) installed on the outer wall of the swing arm (642) to isolate external dust and oil stains. The positioning frame (643) passes through the anti-fouling cover (11). When the clamp (1) moves, it drives the anti-fouling cover (11) to move synchronously. Therefore, the anti-fouling cover (11) has a connecting hole through the positioning frame (643), and a telescopic plate (12) is provided in the connecting hole. The positioning frame (643) passes through the telescopic plate (12). When the clamp (1) moves the anti-fouling cover (11), the positioning frame (643) remains fixed, so that the telescopic plate (12) adapts to the extension and retraction, avoiding interference and ensuring that the anti-fouling effect is not affected.

8. A brake caliper with synchronized wear of friction plates according to claim 4, characterized in that: The balancing assembly (53) includes a stabilizing ring (531) fixedly sleeved on the outer wall of the support (51). Multiple support springs (532) are circumferentially hinged between the side of the stabilizing ring (531) away from the piston (63) and the support plate (52).

9. A brake caliper with synchronized wear of friction plates according to claim 8, characterized in that: The balancing assembly (53) also includes a limiting cylinder (533) installed on the side of the stabilizing ring (531) away from the piston (63). There is a movable gap between the limiting cylinder (533) and the support plate (52), so that the support plate (52) can only move within the movable gap without dead angles, which is used for the support plate (52) to drive the friction plate (4) to adaptively adjust the angle.

10. A brake caliper with synchronous wear of friction plates according to claim 1, characterized in that: The bracket (3) is equipped with several extension tubes (31), and the clamp body (1) is provided with a support ear (13) corresponding to the position of the extension tube (31). The support ear (13) and the extension tube (31) are connected in a detachable manner.

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