Brake caliper, brake system and vehicle

Abstract

The present disclosure relates to a kind of brake caliper, brake system and vehicle, the brake caliper includes: caliper body;Brake pad, movably arranged in caliper body along first direction;Drive module, is arranged in caliper body;Drive module includes one drive part, two transmission parts and two piston assemblies, piston assembly is movably arranged in caliper body along first direction;Drive part is connected with two transmission parts, transmission part is connected with piston assembly corresponding transmission, drives two piston assemblies along first direction and moves, abuts and drives brake pad to move.By setting two piston assemblies, it can be adapted to larger area brake pad, to improve the braking capacity and brake efficiency of brake caliper.In addition, the brake caliper structure of the present disclosure is simple and has fewer components, which is beneficial to the simplified design of structure.

Description

Technical Field

[0001] This disclosure relates to the field of braking technology, and in particular to a brake caliper, braking system and vehicle. Background Technology

[0002] A vehicle's braking system is a system that applies a certain braking force to the wheels to force a certain degree of braking. The function of the braking control system is to force a vehicle to decelerate or even stop according to the driver's or controller's requirements, or to keep a parked vehicle stable under various road conditions (e.g., on a slope), or to keep a vehicle traveling downhill at a stable speed.

[0003] However, in related technologies, vehicle braking systems often suffer from insufficient braking capacity, and have a large number of components, resulting in an unsimplistic structural layout. Utility Model Content

[0004] To overcome the problems existing in the related technologies, this disclosure provides a brake caliper, a braking system, and a vehicle to solve the technical problems existing in the related technologies.

[0005] According to a first aspect of this disclosure, a brake caliper is provided, the brake caliper comprising: Caliper body; Brake pads are movably disposed on the caliper body along a first direction; The drive module is disposed on the caliper body; The drive module includes a drive unit, two transmission units, and two piston assemblies, wherein the piston assemblies are movably disposed on the caliper body along the first direction; The drive unit is connected to the two transmission units, and the transmission units are connected to the piston assembly. The drive unit drives the two piston assemblies to move along the first direction, abutting against and driving the brake pad to move.

[0006] By employing two piston assemblies, the braking force can be evenly distributed, reducing brake pad wear and accommodating larger brake pads, thereby improving the braking capacity and efficiency of the brake caliper. Furthermore, in the electromechanical brake caliper of this disclosure, the drive module has one drive unit and two transmission units, eliminating the need for redundant multiple drive units. This facilitates the driving of both piston assemblies, resulting in a simpler structural layout with fewer parts, thus simplifying the design of the electromechanical brake caliper.

[0007] In some embodiments, the drive unit includes a dual-axis motor, and the transmission unit includes two second worm gears and two second worm wheels; the two second worm gears are respectively connected to both ends of the motor shaft of the dual-axis motor. One of the second worm gears is drivenly connected to one of the second worm gears and is drivenly connected to one of the piston assemblies; Another second worm gear is connected to another second worm drive and is also connected to another piston assembly.

[0008] The two piston assemblies can accommodate larger brake pads, resulting in lower braking energy per unit area of ​​brake pad under the same braking conditions, and improved heat fade resistance of the entire brake caliper. Furthermore, the transmission method using the second worm gear and worm wheel allows for a large reduction ratio, achieving torque amplification through speed reduction, without requiring excessive reduction mechanisms, resulting in fewer components and a simplified structural layout. In addition, compared to gear transmissions, the worm gear transmission method operates with lower noise, effectively improving NVH performance during braking.

[0009] In some embodiments, the piston assembly includes a second lead screw and nut assembly, the second lead screw and nut assembly including a second drive screw and a second drive nut; The second drive screw extends along the first direction and is axially locked and rotatably mounted on the caliper body; the second worm gear is connected to the second drive screw in a transmission manner; The second drive nut is circumferentially locked and axially movable on the second drive screw, and the second drive nut is used to abut against and drive the brake pad to move.

[0010] The lead screw and nut assembly typically possesses high linear positioning accuracy, enabling adjustments at a higher level of precision. Therefore, when using brake calipers, it can precisely control the position of the brake pads, resulting in more accurate and stable braking. Furthermore, the lead screw and nut assembly's transmission method produces lower noise, effectively improving NVH performance during braking. However, this disclosure does not limit the specific structural form of the piston assembly.

[0011] In some embodiments, the threads of the two second worms are in the same direction, and the rotation directions of the two second worm wheels are the same; or, the threads of the two second worms are in opposite directions, and the rotation directions of the two second worm wheels are different.

[0012] The arrangement of the thread direction of the second worm can effectively improve the flexibility of the structural design.

[0013] In some embodiments, the transmission unit further includes a support bearing, wherein the end of the second worm is rotatably inserted into the support bearing.

[0014] By setting up this support bearing, the second worm is effectively supported on the one hand, and the rotation of the second worm is facilitated on the other hand, reducing wear on the second worm.

[0015] In some embodiments, the piston assembly further includes a piston body connected to the second drive nut and used to abut against the brake pad.

[0016] By designing this piston body, better contact with the brake pads can be achieved. At the same time, it can protect the second drive nut from direct wear and act as a buffer between the second drive nut and the brake pads, thereby extending the service life of the second drive nut.

[0017] In some embodiments, the piston body and the second drive nut are integrally formed; or... The piston body is sleeved on the second drive nut, the end face of the second drive nut is formed with a third spherical surface, and the inner wall of the piston body is formed with a fourth spherical surface, the third spherical surface and the fourth spherical surface forming a spherical fit; or, The piston body is connected to the second drive nut via a ball joint.

[0018] Among these advantages, the one-piece molding method facilitates processing and forming. Secondly, whether using the two spherical surfaces or the ball joint, the purpose is to ensure that when the brake pads wear unevenly, the piston body can be offset at a certain angle, allowing the piston body to apply braking force vertically to the brake pads.

[0019] In some embodiments, the caliper body includes a body frame and a body shell connected to each other; The brake pads are movably disposed on the main body frame along the first direction; Both the drive unit and the transmission unit are disposed inside the main body shell.

[0020] By housing both the drive unit and the transmission unit within the main body shell, the main body shell can provide effective protection.

[0021] In some embodiments, the body shell includes a first shell and a second shell, the first shell and the second shell being connected to each other along a second direction; wherein the first direction intersects with the second direction.

[0022] By configuring the main body shell as a first shell and a second shell that are connected to each other, the installation and disassembly of the main body shell are facilitated. The first shell can cover one of the transmission parts, and the second shell can cover the other transmission part.

[0023] In some embodiments, the caliper body further includes an inner partition disposed within the body housing, which divides the internal space of the body housing into a first space and a second space, wherein one of the transmission parts is disposed in the first space and the other of the transmission parts is disposed in the second space.

[0024] By setting an inner partition inside the main body shell, the two second worm gears of the two transmission parts can be effectively separated, avoiding mutual interference between the two second worm gears and improving the stability of the transmission.

[0025] In some embodiments, the drive unit includes a dual-axis motor and a rotation angle sensor; One of the transmission parts is connected to one end of the motor shaft of the dual-axis motor, and the other transmission part is connected to the other end of the motor shaft of the dual-axis motor. The angle sensor includes a sensor rotor and a sensor circuit board. The sensor rotor is disposed on the motor shaft of the dual-axis motor, and the sensor circuit board is disposed on the inner partition.

[0026] Among them, by setting up an angle sensor, the rotation of the dual-axis motor can be effectively detected; secondly, the inner partition provides a mounting base for the sensor circuit board, thereby realizing the detection of the sensor rotor.

[0027] In some embodiments, the caliper body further includes a mounting plate detachably connected to the body frame, and the body shell is connected to the mounting plate; or, the mounting plate is integrally formed into the body frame.

[0028] When repair or replacement of the main body shell or internal structural components is required, the mounting plate can be removed from the main body frame, improving ease of operation. Alternatively, the mounting plate can be integrally molded into the main body frame, facilitating processing and improving structural strength.

[0029] In some embodiments, the piston assembly includes a first lead screw and nut assembly, the first lead screw and nut assembly including a first drive screw and a first drive nut; The first drive nut is axially locked and circumferentially rotatable on the caliper body, and the second worm gear is connected to the first drive nut in a transmission manner; The first drive screw extends along the first direction and is axially movable and circumferentially locked through and connected to the first drive nut, and the first drive screw is used to abut against and drive the brake pad to move.

[0030] In this assembly, the first drive nut of the first lead screw nut is connected to the second worm gear transmission. When the first drive nut rotates, the first drive screw moves in a first direction to abut against and drive the brake pads to move. This achieves braking while also transmitting power.

[0031] In some embodiments, the second worm gear is sleeved and connected to the first drive nut and integrally formed with the first drive nut.

[0032] The one-piece molding method facilitates the transmission between the second worm gear and the first drive nut, and also makes it easier to process and shape.

[0033] In some embodiments, an adapter board is also included; The adapter plate is movably disposed on the caliper body along the first direction and is disposed between the brake pad and the piston assembly; The area where the adapter plate abuts against the brake pad is the first area, and the area where the two piston assemblies abut against the adapter plate is the second area, wherein the first area is larger than the second area.

[0034] Since the first area is larger than the second area, the portion of the adapter plate that contacts the brake pad has a larger surface area. This helps to distribute the pressure applied by the piston assembly more evenly on the brake pad, thereby reducing wear or damage caused by excessive local pressure and improving the durability and reliability of the braking system.

[0035] Furthermore, a larger contact area means that braking force can be transmitted more effectively during braking, resulting in more stable and reliable braking performance. Especially in emergency braking situations, a uniform pressure distribution helps ensure that the vehicle can stop quickly and safely.

[0036] In some embodiments, the adapter plate includes a first side and a second side disposed opposite to each other in the first direction; The first side recess has two grooves, each corresponding to a piston assembly, and the grooves are for the corresponding piston assemblies to be inserted. The first side is fixedly connected to the piston assembly, or the second side is fixedly connected to the brake pad.

[0037] The groove is designed for the insertion of the piston assembly, which allows the piston assembly to be accurately positioned on the adapter plate, thus maintaining consistency and stability, and also helps to reduce installation errors.

[0038] In some embodiments, the piston body of the piston assembly has a first plane formed at its end, and the inner wall of the groove has a second plane formed, the first plane being used to abut against the second plane; and / or, The piston body of the piston assembly has a first arcuate surface at its end, and the inner wall of the groove has a second arcuate surface. The first arcuate surface is used to abut against the second arcuate surface.

[0039] The design of the first plane for contact with the second plane ensures a more secure and precise connection between the piston body and the adapter plate. This plane-to-plane contact not only provides a larger contact area but also distributes stress, reduces localized wear, and extends overall lifespan. And / or, by employing a first arc-shaped surface for contact with the second arc-shaped surface, the issue of uneven parallelism between the two piston assemblies can be effectively overcome.

[0040] According to a second aspect of this disclosure, a braking system is also provided, the braking system including the aforementioned brake caliper.

[0041] According to a third aspect of this disclosure, a vehicle is also provided, the vehicle including the said brake caliper or the said braking system.

[0042] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: First, by setting two piston assemblies, the two piston assemblies are used to distribute the braking force evenly, reduce the wear of the brake pads, and can be adapted to brake pads with a larger area, thereby improving the braking capacity and braking efficiency of the brake caliper.

[0043] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0044] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0045] Figure 1 This is a three-dimensional structural schematic diagram of a brake caliper according to an exemplary embodiment.

[0046] Figure 2 This is a three-dimensional structural schematic diagram of a brake caliper according to an exemplary embodiment, wherein the body housing is not shown in the figure.

[0047] Figure 3 yes Figure 2 A magnified view of a section at point E in the middle.

[0048] Figure 4 This is a partial structural schematic diagram of a brake caliper according to an exemplary embodiment.

[0049] Figure 5This is a three-dimensional structural schematic diagram of a piston assembly of a brake caliper according to an exemplary embodiment, wherein a second worm gear is also shown in the figure.

[0050] Figure 6 This is an exploded structural schematic diagram of a piston assembly of a brake caliper according to an exemplary embodiment, wherein a second worm gear is also shown in the figure.

[0051] Figure 7 This is a schematic diagram of a brake caliper structure according to an exemplary embodiment, wherein the second worm gear is connected to the second drive screw.

[0052] Figure 8 This is a schematic diagram of a brake caliper structure according to an exemplary embodiment, wherein the second worm gear is connected to the first drive nut via a transmission connection.

[0053] Figure 9 This is a schematic diagram illustrating the engagement of a brake caliper piston body, an adapter plate, and brake pads according to an exemplary embodiment, wherein a first plane and a second plane are shown in the diagram.

[0054] Figure 10 This is a schematic diagram illustrating the engagement of a brake caliper piston body, an adapter plate, and brake pads according to an exemplary embodiment, wherein the first arcuate surface and the second arcuate surface are shown in the diagram.

[0055] Explanation of reference numerals in the attached figures 1. Caliper body; 11. Body frame; 111. Frame bridge arm; 112. Cutout groove; 12. Body housing; 121. First housing; 122. Second housing; 13. Inner partition; 14. Mounting plate; 2. Brake pads; 21. Brake pad body; 22. Metal backing plate; 3. Drive module; 31. Drive unit; 312. Dual-axis motor; 313. Angle sensor; 3131. Sensor rotor; 3132. Sensor circuit board; 32. Transmission unit; 323. Second worm gear; 324. Second worm wheel; 325. Support bearing; 33. Piston assembly; 332. First drive screw; 333. First drive nut; 334. Limiting component; 335. Thrust bearing; 336. Piston body; 3363. First plane; 3364. Second plane; 3365. First arc-shaped surface; 3366. Second arc-shaped surface; 3367. Sealing ring; 338. Second drive screw; 339. Second drive nut; 34. Adapter plate; 341. First side surface; 3410. Groove; 342. Second side surface; 1000, Brake disc; A. First direction; B. Second direction; C. Third direction. Detailed Implementation

[0056] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0057] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" refer to the inner and outer contours of a specific structure; directional terms such as "first direction," "second direction," and "third direction" refer to three directions that intersect in pairs. Specifically, the first direction, the second direction, and the third direction can be arranged perpendicularly to each other in pairs, as detailed in the following reference. Figure 1 As shown; the terms used, such as "first" and "second", are only used to distinguish one element from another and do not indicate any order or importance.

[0058] Reference Figures 1 to 10 As shown, this disclosure provides a brake caliper, which includes: a caliper body 1; a brake pad 2 movably disposed on the caliper body 1 along a first direction A; and a drive module 3 disposed on the caliper body 1. The drive module 3 includes a drive unit 31, two transmission units 32, and two piston assemblies 33. The piston assemblies 33 are movably disposed on the caliper body 1 along the first direction A. The drive unit 31 is driven to the two transmission units 32, and the transmission units 32 are correspondingly driven to the piston assemblies 33, driving the two piston assemblies 33 to move along the first direction A, abutting against and driving the brake pad 2 to move.

[0059] In the above technical solution, by setting two piston assemblies 33, the braking force can be evenly distributed, reducing the wear of the brake pads 2, and accommodating larger brake pads 2, thereby improving the braking capacity and efficiency of the brake caliper. Furthermore, the two transmission units 32, driven by the drive unit 31, can be correspondingly connected to the piston assemblies 33. With this arrangement, even if one transmission unit 32 malfunctions, the other transmission unit 32 can still drive the piston assembly 33 normally, moving the brake pads 2 to achieve braking. The drive module 3 has one drive unit 31 and two transmission units 32, eliminating the need for multiple redundant drive units 31. This facilitates the driving of both piston assemblies 33, resulting in a simpler structural layout with fewer parts, thus simplifying the brake caliper structure.

[0060] Alternatively, an electromechanical braking method can be used, which reduces the risk of fluid leakage and improves braking reliability and ease of maintenance compared to a hydraulic system.

[0061] Optionally, refer to Figure 2 and Figure 4 As shown, the drive unit 31 includes a dual-axis motor 312, and the transmission unit 32 includes two second worm gears 323 and two second worm wheels 324; the two second worm gears 323 are respectively connected to the two ends of the motor shaft of the dual-axis motor 312; one of the second worm wheels 324 is connected to one of the second worm gears 323 and is connected to one of the piston assemblies 33; the other second worm wheel 324 is connected to the other second worm gear 323 and is connected to the other piston assembly 33.

[0062] In this embodiment, when the dual-axis motor 312 rotates, the two second worm gears 323 that are connected to the dual-axis motor 312 also rotate. When the second worm gears 323 rotate, the corresponding second worm wheel 324 also rotates and drives the corresponding piston assembly 33 to move, thereby pushing the brake pad 2 to move and achieve braking.

[0063] The two piston assemblies 33 can accommodate larger brake pads 2, resulting in lower braking energy per unit area of ​​brake pad 2 under the same braking conditions, and improved heat fade resistance of the entire brake caliper. Furthermore, the transmission method of the second worm gear 323 and the second worm wheel 324 achieves a large reduction ratio, realizing speed reduction and torque increase without requiring excessive reduction mechanisms, resulting in fewer parts and a simplified structural layout. In addition, compared to gear transmission, the worm gear transmission method has lower operating noise, effectively improving NVH performance during braking.

[0064] In one implementation, reference is made to Figures 4 to 6 As shown, the piston assembly 33 includes a second lead screw and nut assembly, which includes a second drive screw 338 and a second drive nut 339. The second drive screw 338 extends along a first direction A and is axially locked and circumferentially rotatable on the caliper body 1. The second worm gear 324 is connected to the second drive screw 338. The second drive nut 339 is circumferentially locked and axially movable on the second drive screw 338, and the second drive nut 339 is used to abut against and drive the brake pad 2 to move.

[0065] In this embodiment, the second drive screw 338 is connected to the second worm gear 324. When the second worm gear 324 rotates, the second drive screw 338 also rotates, thereby driving the second drive nut 339, which is connected to the drive screw, to move along the first direction A. The second drive nut 339 can abut against the brake pad 2, thereby driving the brake pad 2 to move along the first direction A.

[0066] The lead screw and nut assembly typically possesses high linear positioning accuracy, enabling adjustments at a higher level of precision. Therefore, when the brake caliper is in use, it can precisely control the position of the brake pads 2, resulting in a more accurate and stable braking effect. Furthermore, the lead screw and nut assembly's transmission method produces lower noise, effectively improving NVH performance during braking. However, this disclosure does not limit the specific structural form of the piston assembly 33.

[0067] Optionally, the threads of the two second worm gears 323 are in the same direction, and the rotation directions of the two second worm wheels 324 are the same. Alternatively, the threads of the two second worm gears 323 are in opposite directions, and the rotation directions of the two second worm wheels 324 are different, improving the flexibility of the structural design. This disclosure does not limit this. It should be noted that even when the threads of the two second worm gears 323 are in opposite directions, that is, when the rotation directions of the two second worm wheels 324 are different, the two piston assemblies 33 can still move in the same direction. For example, the thread directions of the drive screws inside the two piston assemblies 33 can be designed to be opposite to achieve correction of the power transmission direction.

[0068] Optionally, refer to Figure 2 and Figure 4 As shown, the transmission unit 32 also includes a support bearing 325, and the end of the second worm 323 is rotatably inserted into the support bearing 325. By providing the support bearing 325, the second worm 323 is effectively supported on the one hand, and the rotation of the second worm 323 is facilitated on the other hand, reducing wear on the second worm 323.

[0069] Optionally, the piston assembly 33 also includes a piston body 336, which is connected to the second drive nut 339 and is used to abut against the brake pad 2.

[0070] First, by setting the piston body 336, it can better achieve contact with the brake pad 2. At the same time, it can protect the second drive nut 339 from direct wear and act as a buffer between the second drive nut 339 and the brake pad 2, thereby extending the service life of the second drive nut 339.

[0071] In addition, the piston body 336 can provide a larger contact surface relative to the second drive nut 339 so that the thrust of the second drive nut 339 can be evenly distributed to the brake pad 2, thereby ensuring that the brake pad 2 can smoothly contact the braking surface and achieve an effective braking effect.

[0072] Furthermore, since the piston body 336 is in direct contact with the brake pad 2, its shape and material selection can be optimized according to actual braking requirements to ensure stable performance under different temperature and pressure conditions; this disclosure does not limit this. Additionally, to improve the sealing performance of the piston assembly 33, a sealing ring 3367 may be provided at the end of the piston body 336.

[0073] Optionally, the piston body 336 and the second drive nut 339 are integrally formed to improve the ease of forming.

[0074] Regarding the selection of the connection method between the piston body 336 and the second drive nut 339, this disclosure provides the following connection methods: 1) The diameter of the piston body 336 is larger than the diameter of the second drive nut 339. The piston body 336 is sleeved on the second drive nut 339 and the two form an interference fit. The end face of the second drive nut 339 forms a third spherical surface, and the inner wall of the piston body 336 forms a fourth spherical surface. The third spherical surface and the fourth spherical surface form a spherical fit.

[0075] 2) The diameter of the piston body 336 is larger than the diameter of the second drive nut 339. The piston body 336 is sleeved on the second drive nut 339, and the two are detachably connected by snap-fit ​​or threaded connection. The end face of the second drive nut 339 forms a third spherical surface, and the inner wall of the piston body 336 forms a fourth spherical surface. The third spherical surface and the fourth spherical surface form a spherical fit.

[0076] 3) The diameter of the piston body 336 can be equal to or smaller than the diameter of the second drive nut 339. The piston body 336 is not sleeved on the second drive nut 339, but is arranged side by side, and the piston body 336 and the second drive nut 339 are connected by a ball joint.

[0077] It should be noted that, in the above three connection methods, regardless of whether the piston body 336 and the second drive nut 339 adopt a two-spherical mating form or a ball joint mating form, the purpose is to solve the problem that when the brake pad 2 is worn unevenly, the piston body 336 can be offset at a certain angle so that the piston body 336 can apply braking force to the brake pad 2 vertically. However, this disclosure does not limit the specific connection method and is not limited to the connection methods mentioned above.

[0078] Optionally, refer to Figure 1 and Figure 2 As shown, the caliper body 1 includes a body frame 11 and a body shell 12 connected to each other; the brake pad 2 is movably disposed on the body frame 11 along the first direction A; the drive unit 31 and the transmission unit 32 are both disposed inside the body shell 12.

[0079] In this embodiment, by housing both the drive unit 31 and the transmission unit 32 within the body shell 12, the body shell 12 provides effective protection. The body frame 11 can be constructed in any suitable shape and structure, and this disclosure does not limit its application.

[0080] Reference Figure 1 As shown, the main body shell 12 includes a first shell 121 and a second shell 122, which are connected to each other along a second direction B; wherein the first direction A and the second direction B are intersecting.

[0081] In this embodiment, by configuring the main body shell 12 as a first shell 121 and a second shell 122 that are connected to each other, the installation and disassembly of the main body shell 12 are facilitated. The first shell 121 can cover one of the transmission parts 32, and the second shell 122 can cover the other transmission part 32. This disclosure does not limit this.

[0082] Reference Figure 2 and Figure 3 As shown, the caliper body 1 also includes an inner partition 13, which is disposed inside the body shell 12 and divides the internal space of the body shell 12 into a first space and a second space. One transmission part 32 is disposed in the first space and the other transmission part 32 is disposed in the second space.

[0083] In this embodiment, by providing an inner partition 13 inside the main body shell 12, the inner partition 13 can effectively separate the two second worm gears 323 of the two transmission parts 32, avoiding mutual interference between the two second worm gears 323 and improving the stability of the transmission. The inner partition 13 can be constructed in any suitable shape and structure, and this disclosure does not limit it, as long as it can effectively separate the parts.

[0084] In another embodiment, refer to Figure 2 and Figure 3 As shown, the drive unit 31 includes a dual-axis motor 312 and an angle sensor 313; one transmission unit 32 is connected to one end of the motor shaft of the dual-axis motor 312, and the other transmission unit 32 is connected to the other end of the motor shaft of the dual-axis motor 312; the angle sensor 313 includes a sensor rotor 3131 and a sensor circuit board 3132, the sensor rotor 3131 is disposed on the motor shaft of the dual-axis motor 312, and the sensor circuit board 3132 is disposed on the inner partition 13.

[0085] In this embodiment, firstly, by setting the rotation angle sensor 313, the rotation of the dual-axis motor 312 can be effectively detected; secondly, the inner partition 13 provides a mounting base for the sensor circuit board 3132, thereby realizing the detection of the sensor rotor 3131.

[0086] Optionally, refer to Figure 2 As shown, the caliper body 1 also includes a mounting plate 14, which is detachably connected to the body frame 11, and the body shell 12 is connected to the mounting plate 14.

[0087] In this embodiment, when repair or replacement of the main body shell 12 or its internal structural components is required, the mounting plate 14 can be removed from the main body frame 11, improving operational convenience. The mounting plate 14 can be detachably connected to the main body frame 11 in any suitable manner. For example, the mounting plate 14 can be connected to the main body frame 11 using fasteners, or it can be connected to the main body frame 11 using a snap-fit ​​method. Alternatively, the mounting plate 14 can be integrally formed into the main body frame 11, facilitating processing and providing structural strength.

[0088] In another embodiment, refer to Figure 8 As shown, the piston assembly 33 includes a first lead screw and nut assembly, which includes a first drive screw 332 and a first drive nut 333. The first drive nut 333 is axially locked and circumferentially rotatable on the caliper body 1, and the second worm gear 324 is connected to the first drive nut 333 in a transmission manner. The first drive screw 332 extends along the first direction A and is axially movable and circumferentially locked through and connected to the first drive nut 333. The first drive screw 332 is used to abut against and drive the brake pad 2 to move.

[0089] Optionally, refer to Figure 8 As shown, the second worm gear 324 can be sleeved and connected to the first drive nut 333 and integrally formed with the first drive nut 333. The integral forming design facilitates power transmission and processing.

[0090] Optionally, refer to Figure 9 and Figure 10 As shown, it also includes an adapter plate 34; the adapter plate 34 is movably disposed on the caliper body 1 along the first direction A and disposed between the brake pad 2 and the piston assembly 33; wherein, the area of ​​the adapter plate 34 abutting with the brake pad 2 is the first area, and the area of ​​the two piston assemblies 33 abutting with the adapter plate 34 is the second area, and the first area is larger than the second area.

[0091] In this embodiment, since the first area is larger than the second area, this means that the portion of the adapter plate 34 that contacts the brake pad 2 has a larger surface area. This helps to distribute the pressure applied by the piston assembly 33 more evenly on the brake pad 2, thereby reducing wear or damage caused by excessive local pressure and improving the durability and reliability of the braking system.

[0092] Furthermore, a larger contact area means that braking force can be transmitted more effectively during braking, resulting in more stable and reliable braking performance. Especially in emergency braking situations, a uniform pressure distribution helps ensure that the vehicle can stop quickly and safely.

[0093] In one implementation, reference is made to Figure 9 and Figure 10 As shown, the adapter plate 34 includes a first side 341 and a second side 342 disposed opposite to each other in the first direction A; the first side 341 is recessed with two grooves 3410, the grooves 3410 are disposed one-to-one with the piston assembly 33, and the grooves 3410 are for the corresponding piston assembly 33 to be inserted; wherein, the first side 341 is fixedly connected to the piston assembly 33, or the second side 342 is fixedly connected to the brake pad 2.

[0094] In this embodiment, the groove 3410 is used for the insertion of the piston assembly 33. This design allows the piston assembly 33 to be accurately positioned on the adapter plate 34, thereby maintaining consistency and stability, and also helps to reduce installation errors.

[0095] In another embodiment, refer to Figure 9 As shown, the piston body 336 of the piston assembly 33 has a first plane 3363 formed at its end, and the inner wall of the groove 3410 has a second plane 3364 formed thereon. The first plane 3363 is used to abut against the second plane 3364.

[0096] In this embodiment, the design of the first plane 3363 and the second plane 3364 ensures a more secure and precise contact between the piston body 336 and the adapter plate 34. This plane-to-plane contact not only provides a larger contact area but also distributes stress, reduces localized wear, and extends overall lifespan.

[0097] In other implementations, refer to Figure 10 As shown, the piston body 336 of the piston assembly 33 has a first arcuate surface 3365 at its end, and the inner wall of the groove 3410 has a second arcuate surface 3366. The first arcuate surface 3365 is used to abut against the second arcuate surface 3366.

[0098] By using a first arc-shaped surface 3365 to abut against a second arc-shaped surface 3366, the problem of low parallelism between the two piston assemblies can be effectively overcome.

[0099] Specifically, the curved surface design provides a larger contact area, ensuring proper guidance of the piston assembly 33 even if the parallelism between the piston body 336 and the adapter plate 34 is not high. The curved surface can provide multi-point contact, maintaining stable contact even if one point deviates from the ideal position.

[0100] In addition, the contact between the first arc-shaped surface 3365 and the second arc-shaped surface 3366 allows for a certain range of angular deviation, so that even if there are minor errors in the assembly or manufacturing process, the piston assembly 33 can still work smoothly and reduce wear caused by poor parallelism.

[0101] In addition, refer to Figure 9 and Figure 10 As shown, in one embodiment, the adapter plate 34 can be connected to the brake pad 2. The brake pad 2 may include a brake pad body 21 and a metal backing plate 22, with the metal backing plate 22 connected to the brake pad body 21 and the adapter plate 34 connected to the metal backing plate 22.

[0102] In a second aspect of this disclosure, a braking system is also provided, which includes the aforementioned brake calipers. For example, the braking system further includes a controller electrically connected to the drive unit 31, thereby improving the speed of response.

[0103] In a third aspect of this disclosure, a vehicle is also provided, which includes the aforementioned brake calipers or the aforementioned braking system.

[0104] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0105] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A brake caliper, characterized in that, The brake caliper includes: Caliper body; Brake pads are movably disposed on the caliper body along a first direction; The drive module is disposed on the caliper body; The drive module includes a drive unit, two transmission units, and two piston assemblies, wherein the piston assemblies are movably disposed on the caliper body along the first direction; The drive unit is connected to the two transmission units, and the transmission units are connected to the piston assembly. The drive unit drives the two piston assemblies to move along the first direction, abutting against and driving the brake pad to move.

2. The brake caliper according to claim 1, characterized in that, The drive unit includes a dual-axis motor, and the transmission unit includes two second worm gears and two second worm wheels; the two second worm gears are respectively connected to both ends of the motor shaft of the dual-axis motor. One of the second worm gears is drivenly connected to one of the second worm gears and is drivenly connected to one of the piston assemblies; Another second worm gear is connected to another second worm drive and is also connected to another piston assembly.

3. The brake caliper according to claim 2, characterized in that, The piston assembly includes a second lead screw and nut assembly, which includes a second drive screw and a second drive nut. The second drive screw extends along the first direction and is axially locked and rotatably mounted on the caliper body; the second worm gear is connected to the second drive screw in a transmission manner; The second drive nut is circumferentially locked and axially movable on the second drive screw, and the second drive nut is used to abut against and drive the brake pad to move.

4. The brake caliper according to claim 3, characterized in that, The two second worms have the same thread direction, and the two second worm wheels rotate in the same direction; or, the two second worms have opposite thread directions, and the two second worm wheels rotate in different directions.

5. The brake caliper according to claim 3, characterized in that, The transmission unit also includes a support bearing, and the end of the second worm is rotatably inserted into the support bearing.

6. The brake caliper according to claim 3, characterized in that, The piston assembly further includes a piston body, which is connected to the second drive nut and is used to abut against the brake pad.

7. The brake caliper according to claim 6, characterized in that, The piston body is integrally formed with the second drive nut; or... The piston body is sleeved on the second drive nut, the end face of the second drive nut is formed with a third spherical surface, and the inner wall of the piston body is formed with a fourth spherical surface, the third spherical surface and the fourth spherical surface forming a spherical fit; or, The piston body is connected to the second drive nut via a ball joint.

8. The brake caliper according to claim 1, characterized in that, The caliper body includes an interconnected body frame and a body shell; The brake pads are movably disposed on the main body frame along the first direction; Both the drive unit and the transmission unit are disposed inside the main body shell.

9. The brake caliper according to claim 8, characterized in that, The main body shell includes a first shell and a second shell, which are connected to each other along a second direction; wherein the first direction and the second direction are intersecting.

10. The brake caliper according to claim 8, characterized in that, The caliper body also includes an inner partition, which is disposed inside the body shell and divides the internal space of the body shell into a first space and a second space, wherein one of the transmission parts is disposed in the first space and the other of the transmission parts is disposed in the second space.

11. The brake caliper according to claim 10, characterized in that, The drive unit includes a dual-axis motor and a rotation angle sensor; One of the transmission parts is connected to one end of the motor shaft of the dual-axis motor, and the other transmission part is connected to the other end of the motor shaft of the dual-axis motor. The angle sensor includes a sensor rotor and a sensor circuit board. The sensor rotor is disposed on the motor shaft of the dual-axis motor, and the sensor circuit board is disposed on the inner partition.

12. The brake caliper according to claim 8, characterized in that, The caliper body also includes a mounting plate, which is detachably connected to the body frame, and the body shell is connected to the mounting plate; or, the mounting plate is integrally formed into the body frame.

13. The brake caliper according to claim 2, characterized in that, The piston assembly includes a first lead screw and nut assembly, which includes a first drive screw and a first drive nut. The first drive nut is axially locked and circumferentially rotatable on the caliper body, and the second worm gear is connected to the first drive nut in a transmission manner; The first drive screw extends along the first direction and is axially movable and circumferentially locked through and connected to the first drive nut, and the first drive screw is used to abut against and drive the brake pad to move.

14. The brake caliper according to claim 13, characterized in that, The second worm gear is sleeved and connected to the first drive nut and is integrally formed with the first drive nut.

15. The brake caliper according to claim 1, characterized in that, It also includes an adapter board; The adapter plate is movably disposed on the caliper body along the first direction and is disposed between the brake pad and the piston assembly; The area where the adapter plate abuts against the brake pad is the first area, and the area where the two piston assemblies abut against the adapter plate is the second area, wherein the first area is larger than the second area.

16. The brake caliper according to claim 15, characterized in that, The adapter plate includes a first side and a second side disposed opposite to each other in the first direction. The first side recess has two grooves, each corresponding to a piston assembly, and the grooves are for the corresponding piston assemblies to be inserted. The first side is fixedly connected to the piston assembly, or the second side is fixedly connected to the brake pad.

17. The brake caliper according to claim 16, characterized in that, The piston body of the piston assembly has a first plane formed at its end, and the inner wall of the groove has a second plane formed thereon, the first plane being used to abut against the second plane; and / or, The piston body of the piston assembly has a first arc-shaped surface at its end, and the inner wall of the groove has a second arc-shaped surface. The first arc-shaped surface is used to abut against the second arc-shaped surface.

18. A braking system, characterized in that, The braking system includes the brake caliper according to any one of claims 1-17.

19. A vehicle, characterized in that, The vehicle includes the brake calipers of any one of claims 1-17 or the braking system of claim 18.

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