Electro-mechanical brake and vehicle

Abstract

An electro-mechanical brake and a vehicle. The electro-mechanical brake comprises a caliper bracket, a caliper, and a brake motor. The caliper bracket comprises two fixing holes and two sliding-pin accommodating holes. The two fixing holes are configured such that two fixing members pass therethrough; and the two fixing members are configured to fixedly connect a vehicle frame and the caliper bracket. The two sliding-pin accommodating holes are configured for the fixation of two sliding pins; the caliper is configured to be sleeved on the two sliding pins and fix the brake motor; and the brake motor is configured to drive a friction plate to slide in the axial direction of the two sliding pins. The two sliding-pin accommodating holes are configured to be symmetrically arranged along a radial axis of a wheel. The arrangement direction of the two fixing holes intersects the arrangement direction of the two sliding-pin accommodating holes. The electro-mechanical brake can better adapt to a wheel-side space of a vehicle while ensuring the braking effect.

Description

Electromechanical braking systems and vehicles

[0001] This application claims priority to Chinese Patent Application No. 202411527741.5, filed on October 29, 2024, entitled "Electromechanical Braking System and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of automotive technology, specifically to an electromechanical braking system and a vehicle. Background Technology

[0003] Electro-mechanical braking (EMB) systems use a motor and a mechanical feed mechanism to drive the brake. EMB systems are characterized by their simple structure, rapid response, smooth load transfer, and lack of hydraulic lines, resulting in high transmission efficiency. When installed in a vehicle, an EMB system requires adaptation to the vehicle's wheel-side space. Summary of the Invention

[0004] This application provides an electromechanical braking system and a vehicle. The electromechanical braking system can better adapt to the wheel space of the vehicle while ensuring braking effect.

[0005] In a first aspect, this application provides an electromechanical braking system. The electromechanical braking system includes a caliper bracket, a caliper, and a brake motor. The caliper bracket includes two fixing holes and two sliding pin receiving holes. The two fixing holes are for passing through two fixing members, which are used to securely connect a vehicle frame and the caliper bracket. The two sliding pin receiving holes are for fixing two sliding pins. The caliper is fitted onto the two sliding pins and is used to fix the brake motor. The brake motor is used to drive at least one friction pad to slide along the axial direction of the wheel. The two sliding pin receiving holes are arranged symmetrically along the radial axis of the wheel. The arrangement direction of the two fixing holes intersects with the arrangement direction of the two sliding pin receiving holes.

[0006] The electromechanical braking system provided in this application uses a caliper bracket to fix two fixing members and two sliding pins. The caliper bracket is fixedly connected to the vehicle frame via the two fixing members, and slidably connected to the caliper via the two sliding pins. The caliper slides relative to the caliper bracket and drives the friction pads to brake the wheel by receiving the drive of the brake motor. The two sliding pin receiving holes of the caliper bracket are arranged in a direction intersecting with the two fixing holes. The caliper and brake motor are tilted relative to the vehicle frame to avoid interference between the caliper or brake motor and the vehicle frame suspension, allowing for better adaptation to the wheel space. The two sliding pin receiving holes are symmetrically arranged along the radial axis of the wheel, which helps control the braking radius of the caliper and friction pads relative to the wheel, ensuring the braking effect of the electromechanical braking system provided in this application.

[0007] In one implementation, two fixing holes are arranged symmetrically along the radial axis of the wheel, and one of the fixing holes is arranged between the other fixing hole and the two sliding pin receiving holes along the arrangement direction perpendicular to the two sliding pin receiving holes.

[0008] In this implementation, the electromechanical braking system provided by this application can better adapt to the connection structure of the vehicle frame by limiting the arrangement of the two fixing holes, thus expanding the scope of application of the electromechanical braking system provided by this application.

[0009] In one implementation, along the arrangement direction of the two sliding pin receiving holes, one sliding pin receiving hole, one fixing hole, the other sliding pin receiving hole, and the other fixing hole are arranged sequentially.

[0010] In this implementation, by limiting the arrangement of the two fixing holes and the two sliding pin receiving holes, the angle range between the arrangement direction of the two fixing parts and the arrangement direction of the two sliding pins can be limited, thereby improving the stress conditions of the caliper frame and enhancing the structural stability of the caliper frame.

[0011] In one implementation, the angle between the arrangement direction of the two sliding pin receiving holes and the arrangement direction of the two fixed holes is less than or equal to 20°.

[0012] In this implementation, by limiting the included angle range of the arrangement directions of the two fixing holes and the two sliding pin receiving holes, the caliper bracket reliably supports the caliper and friction plate, ensuring the braking effect of the electromechanical braking system provided in this application.

[0013] In one implementation, a caliper bracket includes a base and two cantilever arms, with two mounting holes located on the base. Each cantilever arm includes opposite ends along an arrangement direction perpendicular to the two sliding pin receiving holes, one end for fixed connection to a base and the other end including a sliding pin receiving hole.

[0014] In this implementation, the caliper bracket's base and two cantilever arms are arranged in a U-shape. The caliper bracket is reliably fixed to the vehicle frame via the base and reliably supported by the two cantilever arms. The space between the two cantilever arms can be used to avoid collisions between the caliper and the friction plate.

[0015] In one implementation, along the arrangement direction perpendicular to the two sliding pin receiving holes, the length of one cantilever is less than the length of the other cantilever, and one cantilever is arranged in front of the other cantilever along the first rotation direction of the wheel, which is the rotation direction when the wheel moves forward.

[0016] In this implementation, because the arrangement direction of the two sliding pin receiving holes intersects with the arrangement direction of the two fixing holes, the two cantilever arms have different lengths. The cantilever arm with the shorter length has better structural stability. The shorter cantilever arm is arranged in front of the other cantilever arm along the rotation direction when the wheel is moving forward, so as to adapt to the force scenario of the friction pad and improve the braking effect of the electromechanical braking system provided in this application.

[0017] In one implementation, the width of one cantilever is greater than the width of the other cantilever along the arrangement direction of the two sliding pin receiving holes.

[0018] In one implementation, the width of one cantilever along the wheel axis is greater than the width of the other cantilever.

[0019] In the two implementation methods mentioned above, the outer dimensions of the shorter cantilever are increased along the arrangement direction of the two sliding pin receiving holes or along the wheel axis to improve the structural stability of the shorter cantilever, adapt to the force scenario of the friction pad, and improve the braking effect.

[0020] In one implementation, the middle section of each cantilever includes a mounting groove, with the openings of the two mounting grooves facing each other along the arrangement direction of the two sliding pin receiving holes, and each mounting groove is used to accommodate a positioning protrusion of a friction plate.

[0021] In this implementation, the caliper bracket is also used to mount the friction pad and allow the friction pad to slide along the wheel's axial direction. The two positioning protrusions of the friction pad are arranged opposite each other along the length of the friction pad, and the length of the friction pad is parallel to the arrangement direction of the two sliding pin receiving holes. This ensures that the friction pad is mounted on the caliper bracket with radial axial symmetry relative to the wheel, thereby improving the braking effect of the friction pad on the wheel's brake disc.

[0022] In one implementation, along the arrangement direction perpendicular to the two sliding pin receiving holes, the width of each mounting groove is greater than the width of the positioning protrusion.

[0023] In this implementation, a gap is left between the mounting groove of the caliper frame and the positioning protrusion of the friction pad along the arrangement direction perpendicular to the two sliding pin receiving holes. The friction pad can be displaced relative to the caliper frame along the arrangement direction perpendicular to the two sliding pin receiving holes, thereby forming a buffer when the friction pad contacts the brake disc to improve the stress conditions of the friction pad and extend the service life of the friction pad.

[0024] In one implementation, each mounting groove includes two opposing groove walls along a direction perpendicular to the arrangement of the two sliding pin receiving holes, one groove wall being arranged between the other groove wall and a sliding pin receiving hole, and the length of one groove wall being less than or equal to the length of the other groove wall along the arrangement of the two sliding pin receiving holes.

[0025] In this implementation, each cantilever comprises two segments along the arrangement direction perpendicular to the two sliding pin receiving holes. One segment is located on the side of the mounting groove facing the base, and the other segment is located on the side of the mounting groove facing the sliding pin receiving holes. The segment of the cantilever located on the side of the mounting groove facing the base is vertically positioned below the friction plate. That is, the width of one groove wall on the lower side of the vertical mounting groove is larger, allowing one groove wall to provide better support for the friction plate.

[0026] In one implementation, a caliper bracket includes two support arms, two connecting arms, and two additional mounting slots. Each support arm is spaced apart along the wheel axial direction from a cantilever on the side away from a brake motor. Each connecting arm is used to securely connect a support arm and a cantilever. Each support arm includes one of the two additional mounting slots. Along the wheel axial direction, the distance between a support arm and a cantilever is greater than the thickness of the brake disc. The openings of the two additional mounting slots are opposite each other along the arrangement direction of the two sliding pin receiving holes. Each of the two additional mounting slots is used to receive a positioning protrusion of another friction pad.

[0027] In this implementation, the two cantilever arms and two support arms of the caliper bracket along the wheel axis are located on both sides of the brake disc. The two mounting slots formed by the two cantilever arms are used to mount one friction pad, and the other two mounting slots formed by the two support arms are used to mount the other friction pad. The two friction pads are positioned on both sides of the brake disc along the wheel axis and, driven by the caliper, contact the brake disc from both sides, ensuring the braking effect of the electromechanical braking system provided in this application.

[0028] In one implementation, a caliper includes two additional sliding pin receiving holes, the arrangement of which is parallel to the arrangement of the two sliding pin receiving holes, the openings of which are oriented axially toward a caliper holder along the wheel axis, and each of the two additional sliding pin receiving holes is used to accommodate a sliding pin.

[0029] In this implementation, the caliper is fitted onto two sliding pins via two additional sliding pin receiving holes and slidably connected to the caliper frame. The caliper receives the drive of the brake motor, slides relative to the caliper frame, and drives the friction pads to brake the wheel. The two additional sliding pin receiving holes of the caliper are arranged symmetrically with respect to the radial axis of the wheel, so that the caliper drives the friction pads to brake the wheel radially and ensures braking effectiveness.

[0030] In one implementation, a caliper includes two connecting holes for passing through two connectors for securing a brake motor. The orientation of the two connecting holes intersects with the orientation of two sliding pin receiving holes, and the opening direction of the two connecting holes along the wheel axis is opposite to the opening direction of the other two sliding pin receiving holes.

[0031] In this implementation, the brake motor, the other two sliding pin receiving holes of the caliper, and the two sliding pin receiving holes of the caliper bracket are arranged sequentially along the wheel axial direction. Two connecting holes are used to fix the brake motor and the caliper together via connectors. The brake motor extends approximately along the arrangement direction of the two sliding pin receiving holes of the caliper bracket. The extension direction of the brake motor intersects with the arrangement direction of the two fixing holes of the caliper bracket, allowing the brake motor to extend at an angle relative to the two fixing holes to avoid interference with the vehicle's suspension. The electromechanical braking system provided in this application can better adapt to the wheel space of the vehicle.

[0032] In one implementation, the arrangement direction of the two connecting holes is perpendicular to the arrangement direction of the two sliding pin receiving holes. In this case, the extension direction of the brake motor is parallel to the arrangement direction of the two sliding pin receiving holes.

[0033] In one implementation, along the arrangement direction of the two sliding pin receiving holes, one of the other two sliding pin receiving holes, one connecting hole, another connecting hole, and another sliding pin receiving hole from the other two sliding pin receiving holes are arranged sequentially, and along the radial direction of the wheel, one connecting hole is arranged between the wheel's rotation axis and the other connecting hole.

[0034] In this implementation, the angle between the arrangement direction of the two connecting holes and the arrangement direction of the two sliding pin receiving holes is less than 90°, and the angle between the two connecting holes and the center of the wheel in the vertical direction is larger. At this time, the brake motor can be further deflected relative to the arrangement direction of the two sliding pins to avoid the suspension of the frame and better adapt to the wheel space of the vehicle.

[0035] In one implementation, the caliper includes a receiving cavity for accommodating a portion of a transmission element that drives a brake motor and a friction pad along the axial direction of the wheel. The brake motor then drives one friction pad to displace relative to the caliper bracket via the transmission element and, in turn, drives the other friction pad via the caliper.

[0036] In one implementation, the housing of the brake motor is also used to house a gear set of a reducer, through which the brake motor is connected to a transmission component and drives a friction plate and a caliper.

[0037] In one implementation, the housing of the brake motor also houses a circuit board for fixing the drive circuit of the brake motor. This improves the integration and miniaturization of the electromechanical braking system provided in this application, facilitating better adaptation to the wheel-side space of the vehicle.

[0038] Secondly, this application provides a vehicle comprising a frame, wheels, and an electromechanical braking system provided in any implementation of the first aspect above. The caliper bracket in the electromechanical braking system is used to fixably connect to the frame, and at least one friction pad in the electromechanical braking system is used to brake the brake disc of the wheel. The vehicle provided in the second aspect of this application has a more compact internal structure while ensuring braking performance. Attached Figure Description

[0039] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 is a partially enlarged structural diagram of the wheel position of a vehicle provided in one embodiment of this application;

[0041] Figure 2 is a partially enlarged structural diagram of the wheel position of a vehicle provided in one embodiment of this application;

[0042] Figure 3 is a partially exploded schematic diagram of the wheel position of a vehicle provided in one embodiment of this application;

[0043] Figure 4 is a cross-sectional schematic diagram of an electromechanical braking system provided in one embodiment of this application;

[0044] Figure 5 is an exploded view of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0045] Figure 6 is an exploded schematic diagram of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0046] Figure 7 is an exploded view of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0047] Figure 8 is an exploded view of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0048] Figure 9 is an exploded schematic diagram of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0049] Figure 10 is a schematic diagram of the structure of the electromechanical braking system and the frame at the wheel in the prior art;

[0050] Figure 11 is a schematic diagram of the structure of the electromechanical braking system and the frame at the wheel in the prior art;

[0051] Figure 12 is a schematic diagram of the electromechanical braking system and the vehicle frame provided in one embodiment of this application from one side of the view.

[0052] Figure 13 is a schematic diagram of the electromechanical braking system and the vehicle frame provided in one embodiment of this application from another side view;

[0053] Figure 14 is a schematic diagram of the electromechanical braking system provided in one embodiment of this application;

[0054] Figure 15 is a partial structural schematic diagram of an electromechanical braking system provided in one embodiment of this application;

[0055] Figure 16 is a partial structural schematic diagram of an electromechanical braking system provided in one embodiment of this application;

[0056] Figure 17 is an exploded view of an electromechanical braking system provided in one embodiment of this application;

[0057] Figure 18 is a partially enlarged schematic diagram of an electromechanical braking system provided in one embodiment of this application;

[0058] Figure 19 is an exploded schematic diagram of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0059] Figure 20 is an exploded view of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0060] Figure 21 is an exploded view of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0061] Figure 22 is an exploded view of a portion of the structure of the electromechanical braking system provided in one embodiment of this application;

[0062] Figure 23 is a partial structural schematic diagram of an electromechanical braking system provided in one embodiment of this application.

[0063] Reference numerals: 1000-Vehicle; 1001-Wheel; 1002-Frame; 1003-Brake disc; 1004-Connecting structure; 1005-Through hole; 1006-Suspension; 100-Electromechanical braking system; 10-Caliper bracket; 11-Fixing hole; 111-First fixing hole; 112-Second fixing hole; 12-Sliding pin receiving hole; 121-First sliding pin receiving hole; 121A-First sliding pin receiving hole; 121B-First sliding pin receiving hole; 13-Base; 14-Cantilever; 141-First end; 142-Second end; 143-First cantilever; 144-Second cantilever; 145-First section; 146-Second section; 15-Grace groove; 16- Mounting slot; 161-First mounting slot; 162-First slot wall; 163-Second slot wall; 17-Support arm; 171-Second mounting slot; 18-Connecting arm; 20-Caliber; 21-Receiving cavity; 22-Second sliding pin receiving hole; 22A-Second sliding pin receiving hole; 22B-Second sliding pin receiving hole; 23-Body; 24-Support ear; 25-Connecting hole; 251-First connecting hole; 252-Second connecting hole; 26-Allowing hole; 30-Brake motor; 31-Housing; 40-Friction pad; 41-First friction pad; 42-Second friction pad; 43-Positioning protrusion; 50-Transmission component; 60-Reducer; 70-Fixing component; 80-Sliding pin; 90-Connecting component;

[0064] Prior art: 1000' - vehicle; 1006' - suspension; 100' - electromechanical braking system; 20' - caliper; 23' - body; 30' - brake motor; 11' - mounting hole. Detailed Implementation

[0065] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0066] This application provides an electromechanical braking system. The electromechanical braking system includes a caliper bracket, a caliper, and a brake motor. The caliper bracket includes two fixing holes and two sliding pin receiving holes. The two fixing holes are for passing through two fixing members, which are used to securely connect the vehicle frame and the caliper bracket. The two sliding pin receiving holes are for fixing two sliding pins. The caliper is fitted onto the two sliding pins and for fixing the brake motor. The brake motor drives at least one friction pad to slide axially along the two sliding pins. The two sliding pin receiving holes are arranged symmetrically along the radial axis of the wheel. The arrangement direction of the two fixing holes intersects with the arrangement direction of the two sliding pin receiving holes. The electromechanical braking system provided by this application can better adapt to the wheel space of the vehicle while ensuring braking effect.

[0067] This application provides a vehicle including a frame, wheels, and the aforementioned electromechanical braking system. The caliper bracket in the electromechanical braking system is used to fix the vehicle to the frame, and at least one friction pad in the electromechanical braking system is used to brake the brake disc of the wheel. The vehicle provided by this application has a more compact internal structure while ensuring braking performance.

[0068] Please refer to Figures 1, 2 and 3 together. Figure 1 is a partially enlarged structural diagram of the position of the wheel 1001 of the vehicle 1000 provided in one embodiment of this application; Figure 2 is a partially enlarged structural diagram of the position of the wheel 1001 of the vehicle 1000 provided in one embodiment of this application; Figure 3 is a partially exploded schematic diagram of the position of the wheel 1001 of the vehicle 1000 provided in one embodiment of this application.

[0069] As shown in Figures 1, 2, and 3, the vehicle 1000 provided in this application includes a frame 1002, wheels 1001, and an electromechanical braking system 100 provided in this application. The electromechanical braking system 100 is positioned corresponding to the wheels 1001 and is used to brake the wheels 1001. It should be noted that, in order to clearly illustrate the positional and connection relationships between the frame 1002, wheels 1001, and electromechanical braking system 100, only the portion of the frame 1002 closest to the wheels 1001 is shown in the figures.

[0070] A brake disc 1003 is coaxially fixed to the wheel 1001. During vehicle 1000 operation, the brake disc 1003 rotates synchronously with the wheel 1001. The electromechanical braking system 100 is positioned corresponding to the brake disc 1003. The electromechanical braking system 100 generates friction through contact with the brake disc 1003 to brake the brake disc 1003 and indirectly brake the wheel 1001.

[0071] In the embodiment shown in Figure 1, only one wheel 1001 and one electromechanical braking system 100 are used as examples for illustrative purposes. In practical applications, some wheels 1001 or each wheel 1001 in the vehicle 1000 can be equipped with an electromechanical braking system 100.

[0072] In the embodiment shown in Figure 3, the electromechanical braking system 100 provided in this application includes a caliper bracket 10, a caliper 20, a brake motor 30, and a friction pad 40. The electromechanical braking system 100 is used to fix to the vehicle frame 1002 via the caliper bracket 10, and also to slide the caliper 20 via the caliper bracket 10. The caliper 20 is used to fix the brake motor 30 and to drive the friction pad 40. The brake motor 30 is used to provide driving force to drive the caliper 20 to slide the friction pad 40 relative to the caliper bracket 10. The friction pad 40 is used to contact the brake disc 1003 and generate friction to brake the brake disc 1003.

[0073] In one embodiment, the caliper bracket 10 is slidably connected to the caliper 20 along the axial direction of the wheel 1001. That is, the brake motor 30 drives the caliper 20 to slide along the axial direction of the wheel 1001 to move the friction pad 40 toward the brake disc 1003.

[0074] In one embodiment, there are two friction plates 40, arranged sequentially along the axial direction of the wheel 1001: brake motor 30, one friction plate 40, brake disc 1003, and the other friction plate 40. For ease of explanation, the two friction plates 40 are defined as the first friction plate 41 and the second friction plate 42.

[0075] For example, please refer to Figure 4, which is a cross-sectional schematic diagram of an electromechanical braking system 100 provided in one embodiment of this application.

[0076] As shown in Figure 4, along the axial direction of the wheel 1001, the brake motor 30, the first friction pad 41, the brake disc 1003, and the second friction pad 42 are arranged in sequence. The first friction pad 41 is used for transmission connection with the brake motor 30. The second friction pad 42 is used for fixed connection along the axial direction of the wheel 1001 to the end of the caliper 20 away from the brake motor 30. The brake motor 30 is used to drive the first friction pad 41 to move relative to the caliper bracket 10 and abut against the brake disc 1003 along the axial direction of the wheel 1001. The brake motor 30 is also used to push the caliper 20 to drive the second friction pad 42 to slide towards the brake disc 1003 and abut against the brake disc 1003. The brake motor 30 brakes the brake disc 1003 by driving the first friction pad 41 and the second friction pad 42 to move closer to each other along the axial direction of the wheel 1001 and jointly abut against the brake disc 1003.

[0077] In the embodiment shown in Figure 4, the caliper 20 includes a receiving cavity 21 for accommodating a portion of the transmission member 50. The transmission member 50 is used to drive the brake motor 30 and the first friction plate 41 along the axial direction of the wheel 1001. Along the axial direction of the wheel 1001, the brake motor 30, transmission member 50, first friction plate 41, brake disc 1003, and second friction plate 42 are arranged sequentially. The transmission member 50 converts the rotational motion of the motor shaft of the brake motor 30 into axial displacement of the transmission member 50 along the wheel 1001, outputting the displacement towards the first friction plate 41. Thus, the brake motor 30 drives the first friction plate 41 to displace relative to the caliper bracket 10 and move towards the brake disc 1003 via the transmission member 50, thereby abutting against the brake disc 1003. The first friction pad 41 abuts against the brake disc 1003 and receives the reverse thrust applied by the brake disc 1003. The brake motor 30 continues to output driving force so that the transmission component 50 can drive the caliper 20 to slide relative to the caliper bracket 10, thereby driving the second friction pad 42 to move towards the brake disc 1003 to abut against the brake disc 1003. Thus, the first friction pad 41 and the second friction pad 42 come closer to each other and contact the brake disc 1003 to form friction, so as to achieve the effect of the electromechanical braking system 100 braking the brake disc 1003.

[0078] In one embodiment, the transmission component 50 includes a ball screw, and the brake motor 30 drives the screw to rotate to drive the screw sleeve to move. The screw sleeve is used to push the first friction plate 41 toward the brake disc 1003.

[0079] In one embodiment, the housing 31 of the brake motor 30 also houses a gear set of a reducer 60. The brake motor 30 is connected to the transmission component 50 via the reducer 60 and drives the first friction plate 41 and the caliper 20. That is, the electromechanical braking system 100 provided in this application includes a reducer 60. The gear set of the reducer 60 is housed and fixed within the housing 31 of the brake motor 30 and is used to drive the motor shaft of the brake motor 30 and the transmission component 50. The reducer 60 is used to adjust the speed and torque of the driving force output by the brake motor 30.

[0080] In one embodiment, the housing 31 of the brake motor 30 is also used to house a circuit board (not shown in the figure), which is used to fix the drive circuit of the brake motor 30. That is, the electromechanical braking system 100 provided in this application includes a circuit board, which is housed and fixed in the housing 31 of the brake motor 30, and the circuit board is used to control the brake motor 30. As a result, the electromechanical braking system 100 provided in this application has a higher degree of integration and is conducive to miniaturization, and can better adapt to the wheel space of the vehicle 1000.

[0081] For the electromechanical braking system 100 provided in this application, a caliper bracket 10 includes two fixing holes 11 and two sliding pin receiving holes 12. The two fixing holes 11 are for passing through two fixing members 70, which are used to fix the frame 1002 and the caliper bracket 10. The two sliding pin receiving holes 12 are used to fix two sliding pins 80, and the caliper 20 is used to be fitted onto the two sliding pins 80. The arrangement direction of the two fixing holes 11 intersects the arrangement direction of the two sliding pin receiving holes 12.

[0082] Please refer to Figures 5 and 6. Figure 5 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application; Figure 6 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application. To clearly illustrate the connection structure 1004 between the caliper bracket 10 and the frame 1002, the structures of the caliper 20, brake motor 30, and friction pad 40 are omitted in Figure 5.

[0083] As shown in Figures 5 and 6, the frame 1002 includes a connecting structure 1004. The connecting structure 1004 includes two through holes 1005, and two fixing holes 11 of the caliper bracket 10 are respectively aligned with the two through holes 1005 of the frame 1002. The caliper bracket 10 is fixed to the frame 1002 by two fasteners 70. The axis of each fastener 70 is parallel to the axis of the wheel 1001. Each fastener 70 passes through one fixing hole 11 and one through hole 1005 to securely connect the caliper bracket 10 and the connecting structure 1004 of the frame 1002.

[0084] The caliper bracket 10 has two sliding pin receiving holes 12 for fixing two sliding pins 80, the axis of each sliding pin 80 being parallel to the axial direction of the wheel 1001. The caliper 20 is fitted onto the two sliding pins 80, thereby slidingly connecting with the caliper bracket 10 along the axial direction of the wheel 1001. In the schematic diagram of Figure 6, one end of each sliding pin 80 is fixed to a sliding pin receiving hole 12, and the other end of each sliding pin 80 extends along a direction parallel to the axial direction of the wheel 1001 toward the side opposite to the brake disc 1003.

[0085] The caliper 20 includes two additional sliding pin receiving holes, the arrangement of which is parallel to the arrangement of the two sliding pin receiving holes 12. The openings of the two additional sliding pin receiving holes face the caliper frame 10 along the axial direction of the wheel 1001. Each of the two additional sliding pin receiving holes 12 is used to accommodate a sliding pin 80.

[0086] For ease of explanation, this application will subsequently define the sliding pin receiving hole of the caliper frame 10 as the first sliding pin receiving hole 121, and the sliding pin receiving hole of the caliper 20 as the second sliding pin receiving hole 22. That is, the two second sliding pin receiving holes 22 are used to extend along an axial direction parallel to the wheel 1001. The arrangement direction of the two second sliding pin receiving holes 22 is parallel to the arrangement direction of the two first sliding pin receiving holes 121. The two second sliding pin receiving holes 22 are used to align with the two first sliding pin receiving holes 121 respectively. Along the axial direction of the wheel 1001, the openings of the two second sliding pin receiving holes 22 face the caliper frame 10. Each second sliding pin receiving hole 22 is used to accommodate one sliding pin 80.

[0087] In another description, each sliding pin 80 is used to pass through a first sliding pin receiving hole 121 and into a second sliding pin receiving hole 22 along the axial direction of the wheel 1001. Thus, the caliper 20 can be slidably connected to the caliper frame 10 via the two sliding pins 80. The caliper 20 can then receive the drive of the brake motor 30, slide relative to the caliper frame 10, and actuate the second friction pad 42 to brake the wheel 1001.

[0088] Please refer to Figures 7, 8, and 9. Figure 7 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application; Figure 8 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application; and Figure 9 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application.

[0089] As shown in Figures 7 to 9, the arrangement direction of the two fixing holes 11 intersects with the arrangement direction of the two first sliding pin receiving holes 121, that is, the arrangement direction of the two fixing holes 11 intersects with the arrangement direction of the two second sliding pin receiving holes 22. The caliper 20 includes a body 23 and two lugs 24. The two lugs 24 are located on both sides of the body 23. Each second sliding pin receiving hole 22 is formed on one lug 24, and the body 23 of the caliper 20 is positioned between the two second sliding pin receiving holes 22. The body 23 of the caliper 20 is used to accommodate the transmission component 50 and to fix the brake motor 30. Because the arrangement direction of the two second sliding pin receiving holes 22 is the same as the arrangement direction of the two first sliding pin receiving holes 121, and the arrangement direction of the two second sliding pin receiving holes 22 intersects with the arrangement direction of the two fixing holes 11 of the caliper frame 10, the body 23 of the caliper 20 is inclined relative to the arrangement direction of the two fixing holes 11. The inclined caliper 20 body 23 is designed to fit the wheel space of vehicle 1000.

[0090] Along the axial direction of the wheel 1001, the caliper 20, on the side opposite to the brake disc 1003, is used to secure the brake motor 30. Because the body 23 of the caliper 20 is inclined relative to the arrangement direction of the two mounting holes 11, the brake motor 30, along the arrangement direction of the two mounting holes 11, is offset towards one of the mounting holes 11 along with the body 23 of the caliper 20. Furthermore, the brake motor 30 also extends from one side of the body 23 of the caliper 20 approximately along the arrangement direction of the two second sliding pin receiving holes 22, with the direction of extension opposite to the direction in which the brake motor 30 is offset towards one mounting hole 11 along with the body 23 of the caliper 20. Thus, the brake motor 30 extends at an incline relative to the two mounting holes 11. This inclined extension of the brake motor 30 facilitates adaptation to the wheel-side space of the vehicle 1000.

[0091] Please refer to Figures 10, 11, 12, and 13. Figure 10 is a schematic diagram of the structure of the electromechanical braking system 100' and the frame 1002' at the wheel in the prior art; Figure 11 is a schematic diagram of the structure of the electromechanical braking system 100' and the frame 1002' at the wheel in the prior art; Figure 12 is a schematic diagram of the structure of the electromechanical braking system 100 and the frame 1002 provided in one embodiment of this application from one side; Figure 13 is a schematic diagram of the structure of the electromechanical braking system 100 and the frame 1002 provided in one embodiment of this application from the other side.

[0092] As shown in Figures 10 to 13, the frame 1002 includes a suspension 1006 near the wheel 1001, and the connection structure 1004 between the suspension 1006 and the frame 1002 is relatively close. In the prior art electromechanical braking system 100', the caliper 20's body 23' is arranged approximately perpendicularly to the arrangement direction of the two fixing holes 11' between them, and the brake motor 30' extends approximately parallel to the arrangement direction of the two fixing holes 11' from one side of the caliper 20's body 23'. The brake motor 30' and the caliper 20's body 23' are prone to interference with the suspension 1006' of the vehicle 1000', thereby limiting the steering angle range of the vehicle 1000'. For the electromechanical braking system 100 provided in this application, by setting the body 23 of the caliper 20 to tilt relative to the arrangement direction of the two fixing holes 11, the brake motor 30 is driven to shift to one side and then tilt and extend to the other side relative to the arrangement direction of the two fixing holes 11. The distance between the brake motor 30 and the suspension 1006 of the vehicle 1000 is larger, which can provide more clearance for the suspension 1006 during the turning of the wheel 1001, so as to better adapt to the wheel side space of the vehicle 1000. In addition, after the brake motor 30 is tilted, it can provide operating space for the installation of the fixing member 70, which improves the manufacturability and assemblability of the electromechanical braking system 100 of this application.

[0093] For the electromechanical braking system 100 provided in this application, the two sliding pin receiving holes 12 of the caliper bracket 10 are arranged symmetrically along the radial axis of the wheel 1001. That is, the two first sliding pin receiving holes 121 are arranged symmetrically along the radial axis of the wheel 1001. Correspondingly, the two second sliding pin receiving holes 22 and the two sliding pins 80 are also arranged symmetrically along the radial axis of the wheel 1001.

[0094] Because the caliper body 23 is offset to one side relative to the arrangement direction of the two fixing holes 11 and tilted relative to the center line connecting the two fixing holes 11, the transmission component 50 and the friction plate 40 also offset and tilt along with the caliper body 23. By symmetrically arranging the two second sliding pin receiving holes 22 along the radial axis of the wheel 1001, the caliper body 23 can be approximately symmetrically distributed along the radial axis of the wheel 1001, and the transmission component 50 and the friction plate 40 can also be symmetrically distributed along the radial axis of the wheel 1001. The transmission component 50 can then transmit the driving force relatively evenly to the friction plate 40, driving the friction plate 40 to contact the brake disc 1003 relatively symmetrically along the radial axis of the wheel 1001, ensuring braking effectiveness.

[0095] Please refer to Figure 14 for details. Figure 14 is a schematic diagram of the structure of an electromechanical braking system 100 provided in one embodiment of this application.

[0096] As shown in Figure 14, the dashed line represents the trajectory of the point of application of the force exerted by the friction pad 40 on the brake disc 1003. O1 is the axle center of the wheel 1001, O2 is the point of application of the braking force exerted by the friction pad on the brake disc in the prior art, and O3 is the point of application of the braking force exerted by the transmission component 50 and the friction pad 40 on the brake disc 1003 in this application. The braking radius r is the distance between the axle center O1 of the wheel 1001 and the force center of the friction pad 40. The size of the braking radius r affects the braking torque of the braking system, thereby affecting the braking effect of the braking system.

[0097] In the embodiment shown in Figure 14, the distance between O1 and O2 is equal to the distance between O1 and O3, meaning that the braking radius of the electromechanical braking system 100 provided in this application is equal to the braking radius of the electromechanical braking system 100' in the prior art. In other words, the electromechanical braking system 100 provided in this application can have the same braking effect as the electromechanical braking system 100' in the prior art.

[0098] Understandably, the electromechanical braking system 100 provided in this application indirectly adjusts the distance between the two first sliding pin receiving holes 121 and the center distance of the wheel 1001 along the radial direction of the wheel 1001 by defining two first sliding pin receiving holes 121 symmetrically arranged along the radial axis of the wheel 1001 and adjusting the distance between the first sliding pin receiving holes 121 and the fixing hole 11 along a direction perpendicular to the arrangement of the two first sliding pin receiving holes 121. This controls the distance between the transmission member 50 and the friction plate 40 along the radial direction of the wheel 1001 to the rotation axis of the wheel 1001, thereby controlling the braking radius of the electromechanical braking system 100 provided in this application relative to the wheel 1001. In other words, by defining the two sliding pin receiving holes 12 of the caliper bracket 10 symmetrically arranged along the radial axis of the wheel 1001, it is convenient to adjust the braking radius of the electromechanical braking system 100 provided in this application relative to the wheel 1001. The electromechanical braking system 100 provided in this application can better adapt to the wheel space of the vehicle 1000 and increase the steering angle range of the vehicle 1000 while ensuring braking effect.

[0099] In one embodiment, the electromechanical braking system 100 provided in this application is located above the rotation axis of the wheel 1001 in the vertical direction.

[0100] In one embodiment, along the radial direction of the wheel 1001, the distance from each first sliding pin receiving hole 121 to the rotation axis of the wheel 1001 is greater than the distance from each fixing hole 11 to the rotation axis of the wheel 1001. That is, along the radial direction of the wheel 1001, each fixing hole 11 is located between any first sliding pin receiving hole 121 and the rotation axis of the wheel 1001.

[0101] In one embodiment, the two fixing holes 11 are arranged symmetrically along the radial axis of the wheel 1001. Along the arrangement direction perpendicular to the two sliding pin receiving holes 12, one of the fixing holes 11 is arranged between the other fixing hole 11 and the two sliding pin receiving holes 12.

[0102] Please refer to Figure 15 for details. Figure 15 is a partial structural schematic diagram of an electromechanical braking system 100 provided in one embodiment of this application.

[0103] As shown in Figure 15, for ease of explanation, the two fixing holes 11 are defined as the first fixing hole 111 and the second fixing hole 112, respectively. The second fixing hole 112 is located between the first fixing hole 111 and the two first sliding pin receiving holes 121, perpendicular to the arrangement direction of the two first sliding pin receiving holes 121. The first fixing hole 111 and the second fixing hole 112 are arranged symmetrically along the radial axis of the vehicle 1000, that is, the axis of symmetry of the first fixing hole 111 and the second fixing hole 112 is parallel to the radial direction of the wheel 1001. In other words, the center line connecting the first fixing hole 111 and the second fixing hole 112 passes through the axis O1 of the wheel 1001.

[0104] In the prior art, the connection structure of the frame 1002' has two through holes arranged symmetrically with respect to the radial axis of the wheel. The electromechanical braking system 100 provided in this application arranges two fixing holes 11 symmetrically along the radial axis of the wheel 1001, so that the two fixing holes 11 can be adapted to the two through holes on the connection structure of the frame in the prior art. Therefore, the electromechanical braking system 100 provided in this application can be adapted to the vehicle 1000' in the prior art through the caliper bracket 10. Without changing the connection structure of the prior art vehicle 1000', it can be installed on the frame of the prior art vehicle 1000', better adapting to the wheel space of the prior art vehicle 1000' while ensuring braking effect. By limiting the arrangement of the two fixing holes 11, the applicability of the electromechanical braking system 100 provided in this application can be expanded.

[0105] In one embodiment, along the arrangement direction of the two sliding pin receiving holes 12, one sliding pin receiving hole 12, one fixing hole 11, the other sliding pin receiving hole 12, and the other fixing hole 11 are arranged sequentially.

[0106] Two sliding pins 80 pass through two first sliding pin receiving holes 121, connecting the lugs 24 of the caliper frame 10 and the caliper 20, respectively. Two fasteners 70 pass through two fastening holes 11, connecting the caliper frame 10 and the connection structure 1004 of the frame 1002. The arrangement of the two sliding pins 80 and the two fasteners 70 is the same as the arrangement of the two first sliding pin receiving holes 121 and the two fastening holes 11. That is, along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, one sliding pin 80, one fastener 70, another sliding pin 80, and another fastener 70 are arranged in sequence. This limits the range of the angle between the line connecting the two sliding pins 80 and the line connecting the two fasteners 70. In other words, this arrangement limits the range of the angle between the center line of the line connecting the two sliding pins 80 and the center line of the line connecting the two fasteners, thereby improving the stress on the caliper frame 10 and enhancing the structural stability of the caliper frame 10. By limiting the arrangement of the two fixing holes 11 and the two first sliding pin receiving holes 121, this application can limit the range of the angle between the arrangement direction of the two fixing members 70 and the arrangement direction of the two sliding pins 80, thereby improving the stress conditions of the caliper frame 10 and enhancing the structural stability of the caliper frame 10.

[0107] For example, the suspension 1006 of the vehicle 1000 is positioned relatively close to the first fixing hole 111. The body 23 of the caliper 20 is tilted towards the second fixing hole 112 relative to the arrangement direction of the two fixing holes 11. For ease of description, the two first sliding pin receiving holes 121 of the caliper bracket 10 will be defined as the first sliding pin receiving hole 121A and the first sliding pin receiving hole 121B, respectively. The first sliding pin receiving hole 121B, the second fixing hole 112, the first sliding pin receiving hole 121A, and the first fixing hole 111 are arranged sequentially along the arrangement direction perpendicular to the first sliding pin receiving hole 121A and the first sliding pin receiving hole 121B. Since the body 23 of the caliper 20 is tilted towards the second fixing hole 112, by arranging the two first sliding pin holes and the two fixing holes 11 in the manner described above, the angle of tilt of the body 23 of the caliper 20 towards the second fixing hole 112 can be limited, improving the force on the caliper frame 10, ensuring that the force on the caliper frame 10 is relatively uniform, and improving the structural stability of the caliper frame 10. In addition, since the brake motor 30 extends from the side of the caliper body 23 near the first sliding pin receiving hole 121A, roughly along the arrangement direction of the first sliding pin receiving hole 121A and the first sliding pin receiving hole 121B, and the direction in which the brake motor 30 extends is opposite to the direction in which the brake motor 30 shifts towards the second fixing hole 112 as the body 23 of the caliper 20 moves, by limiting the angle of tilt of the body 23 of the caliper 20 towards the second fixing hole 112, the tilt angle of the body 23 of the caliper 20 is prevented from being too large, thus avoiding interference with part of the structure of the frame 1002 located above the wheel space of the vehicle 1000.

[0108] In one embodiment, the angle between the arrangement direction of the two sliding pin receiving holes 12 and the arrangement direction of the two fixing holes 11 is less than or equal to 20°. That is, the angle between the line connecting the first sliding pin receiving holes 121A and 121B and the line connecting the first fixing hole 111 and the second fixing hole 112 is less than or equal to 20°. Alternatively, it can be described as the angle between the centerline of the line connecting the first sliding pin receiving holes 121A and 121B and the centerline of the line connecting the first fixing hole 111 and the second fixing hole 112 is less than or equal to 20°. This limits the tilt angle of the caliper body 23 relative to the caliper holder 10.

[0109] Understandably, the electromechanical braking system 100 provided in this application limits the included angle range of the arrangement directions of the two first sliding pin receiving holes 121 and the two fixing holes 11 so that the caliper bracket 10 can reliably support the caliper 20 and the friction plate 40, thereby ensuring the braking effect of the electromechanical braking system 100 provided in this application.

[0110] In one embodiment, the caliper bracket 10 includes a base 13 and two cantilever arms 14. Two fixing holes 11 are located on the base 13 along an arrangement direction perpendicular to the two sliding pin receiving holes 12. Each cantilever arm 14 includes two opposite ends, one end for fixing to the base 13 and the other end including a sliding pin receiving hole 12.

[0111] Please refer to Figure 16 for details. Figure 16 is a partial structural schematic diagram of an electromechanical braking system 100 provided in one embodiment of this application.

[0112] As shown in Figure 16, along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, the base 13 is closer to the rotation axis of the wheel 1001 relative to the two cantilever arms 14. The base 13 is used for fixed connection with the connection structure 1004 of the frame 1002, and the cantilever arms 14 are used for slidable connection with the caliper 20. Specifically, two fixing holes 11 are provided in the base 13. Each fastener 70 passes through a through hole 1005 and a fixing hole 11 of the connection structure 1004 to fix the base 13 and the connection structure 1004. Each cantilever arm 14 includes an opposing first end 141 and a second end 142. Along the arrangement direction perpendicular to the two first sliding pins, the first end 141 is closer to the rotation axis of the wheel 1001 relative to the second end 142. The two cantilever arms 14 are arranged at intervals along the arrangement direction of the two first sliding pin receiving holes 121. Each first sliding pin receiving hole 121 is provided at the second end 142 of a cantilever 14, and each sliding pin 80 passes through a first sliding pin receiving hole 121 and extends into the second sliding pin receiving hole 22 of the caliper 20 to slide the cantilever 14 and the caliper 20.

[0113] The first end 141 of each cantilever 14 is used to fix the base 13, so that the base 13 of the caliper bracket 10 and the two cantilever 14 are arranged in a U-shaped structure. The space between the two cantilever 14 forms a clearance groove 15, which is used to avoid the body 23 of the caliper 20 and the friction plate 40.

[0114] In another description, one cantilever 14, base 13, and the other cantilever 14 of the caliper bracket 10 are arranged in a U-shape to form a clearance groove 15. The clearance groove 15 is located between the two first sliding pin receiving holes 121, perpendicular to the arrangement direction of the two holes. The clearance groove 15 extends through the caliper bracket 10 along an axial direction parallel to the wheel 1001. The clearance groove 15 is used to avoid contact between the caliper body 23 and the first friction plate 41.

[0115] In one embodiment, along the arrangement direction perpendicular to the two sliding pin receiving holes 12, the length of one cantilever 14 is less than the length of the other cantilever 14, and one cantilever 14 is arranged in front of the other cantilever 14 along the first rotation direction of the wheel 1001, the first rotation direction being the rotation direction when the wheel 1001 moves forward.

[0116] For ease of explanation, this application will subsequently define one of the two cantilever arms 14 as the second cantilever arm 144 and the other cantilever arm 14 as the first cantilever arm 143. The first sliding pin receiving hole 121A is located on the first cantilever arm 143, and the first sliding pin receiving hole 121B is located on the second cantilever arm 144. Exemplarily, in the embodiment shown in FIG. 15, the direction of the first rotation is defined as clockwise, i.e., the direction indicated by the arrow in the figure. Thus, when the wheel 1001 moves forward, it drives the brake disc 1003 to rotate clockwise. The second cantilever arm 144 is arranged in front of the first cantilever arm 143 along the first rotation direction of the wheel 1001. Along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, the length of the first cantilever arm 143 is L1, and the length of the second cantilever arm 144 is L2, where L1 > L2.

[0117] Because the arrangement direction of the two first sliding pin receiving holes 121 intersects with the arrangement direction of the two fixing holes 11, the lengths of the two cantilever arms 14 are different. The cantilever arm 14 with the shorter length has better structural stability. During the braking process of the electromechanical braking system 100 provided in this application, the friction force generated on the front side of the friction pad 40 along the rotation direction of the wheel 1001 is greater than that on the rear side of the friction pad 40. By arranging the shorter second cantilever arm 144 in front of the first cantilever arm 143 along the rotation direction of the wheel 1001, it can adapt to the force scenario of the friction pad 40 and improve the braking effect of the electromechanical braking system 100 provided in this application.

[0118] In one embodiment, along the arrangement direction of the two sliding pin receiving holes 12, the width of one cantilever 14 is greater than the width of the other cantilever 14. In the embodiment shown in FIG. 15, along the arrangement direction of the two sliding pin receiving holes 12, the width of the first cantilever 143 is W1, and the width of the second cantilever 144 is W2, where W1 < W2. Based on the difference in the stress conditions of the first cantilever 143 and the second cantilever 144, increasing the width W1 of the second cantilever 144 can improve the structural stability of the second cantilever 144, adapt to the stress scenario of the friction plate 40, and improve the braking effect.

[0119] In one embodiment, along the axial direction of the wheel 1001, the width of one cantilever 14 is greater than the width of the other cantilever 14. As shown in Figure 16, the width of the first cantilever 143 is H1, and the width of the second cantilever 144 is H2, where H1 > H2. Based on the difference in stress conditions between the first cantilever 143 and the second cantilever 144, increasing the width H1 of the first cantilever 143 can improve the structural stability of the first cantilever 143, adapt to the stress scenarios of the friction pad 40, and improve the braking effect.

[0120] In one embodiment, the middle section of each cantilever 14 includes a mounting groove 16, with the openings of the two mounting grooves 16 facing each other along the arrangement direction of the two sliding pin receiving holes 12, and each mounting groove 16 is used to receive a positioning protrusion 43 of a friction plate 40.

[0121] Please refer to Figure 17 for an exploded view of an electromechanical braking system 100 provided in one embodiment of this application.

[0122] As shown in Figure 17, the first friction plate 41 includes two positioning protrusions 43, which are positioned on both sides of the body of the first friction plate 41 along its length. The length of the first friction plate 41 is parallel to the arrangement direction of the two first sliding pin receiving holes 121. The two positioning protrusions 43 support the first friction plate 41 on the caliper bracket 10 and allow it to slide relative to the caliper bracket 10.

[0123] That is, the caliper bracket 10 is used to mount the first friction plate 41 through two mounting slots 16 and allows the first friction plate 41 to slide along the axial direction of the wheel 1001. Specifically, the middle section of the cantilever 14 of each caliper bracket 10 includes a mounting slot 16. The openings of the two mounting slots 16 are arranged opposite each other along the arrangement direction of the two first sliding pin receiving holes 121. That is, the opening of each mounting slot 16 faces the side of the clearance slot 15. Or it can be described that the middle section of the first cantilever 143 facing the second cantilever 144 is recessed in a direction away from the second cantilever 144 to form a mounting slot 16, and the middle section of the second cantilever 144 facing the first cantilever 143 is recessed in a direction away from the first cantilever 143 to form another mounting slot 16. Each mounting slot 16 is used to receive a positioning protrusion 43 of the first friction plate 41.

[0124] Thus, the caliper bracket 10 can support the first friction pad 41 radially along the wheel 1001. Since the two first sliding pin receiving holes 121 are arranged symmetrically along the radial axis of the wheel 1001, that is, the two cantilever arms 14 are arranged symmetrically along the radial axis of the wheel 1001, by extending the two positioning protrusions 43 of the first friction pad 41 along its own length direction into the mounting groove 16 of one of the cantilever arms 14, it can be ensured that the first friction pad 41 can be installed on the caliper bracket 10 approximately symmetrically along the radial axis of the wheel 1001, thereby improving the braking effect of the first friction pad 41 on the brake disc 1003.

[0125] In one embodiment, along the arrangement direction perpendicular to the two sliding pin receiving holes 12, the width of each mounting groove 16 is greater than the width of the positioning protrusion 43. That is, along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, each positioning protrusion 43 is spaced apart from at least one groove wall of the mounting groove 16.

[0126] Understandably, by setting a gap between the mounting groove 16 of the caliper bracket 10 and the positioning protrusion 43 of the first friction plate 41 along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, the first friction plate 41 can be displaced relative to the caliper bracket 10 along the arrangement direction perpendicular to the two first sliding pin receiving holes 121. This prevents the sliding of the first friction plate 41 relative to the caliper bracket 10 from being obstructed during braking, thereby ensuring reliable braking of the electromechanical braking system 100 provided in this application. On the other hand, this gap allows the first friction plate 41 to be displaced radially along the wheel 1001 when it contacts the brake disc 1003, thereby buffering the impact of the brake disc 1003 on the first friction plate 41, improving the stress conditions of the first friction plate 41, and extending the service life of the first friction plate 41.

[0127] In one embodiment, each mounting groove 16 includes two opposing groove walls along the arrangement direction perpendicular to the two sliding pin receiving holes 12, one groove wall being arranged between the other groove wall and a sliding pin receiving hole 12, and the length of one groove wall being less than or equal to the length of the other groove wall along the arrangement direction of the two sliding pin receiving holes 12.

[0128] Please refer to Figure 18 for details. Figure 18 is a partially enlarged schematic diagram of an electromechanical braking system provided in one embodiment of this application. As shown in Figure 18, for ease of explanation, one groove wall will be defined as the first groove wall 162 and the other groove wall as the second groove wall 163. Along the arrangement direction perpendicular to the two sliding pin receiving holes 12, the first groove wall 162 is located between the second groove wall 163 and the first sliding pin receiving hole 121. That is, in the vertical direction, the positioning protrusion 43 of the first friction plate 41 is located above the second groove wall 163. Along the arrangement direction of the two first sliding pin receiving holes 121, the length of the first groove wall 162 is less than or equal to the length of the second groove wall 163.

[0129] In another description, each cantilever 14 comprises two segments along the arrangement direction perpendicular to the two sliding pin receiving holes 12, defined as a first segment 145 and a second segment 146. The first segment 145 is located on the side of the mounting groove 16 facing the base 13, and the second segment 146 is located on the side of the mounting groove 16 facing the first sliding pin receiving hole 121. The first segment 145 is vertically located below the positioning protrusion 43 of the first friction plate 41, and the second segment 146 is vertically located above the positioning protrusion 43 of the first friction plate 41. Along the arrangement direction of the two first sliding pin receiving holes 121, the width of the second segment 146 is less than or equal to the width of the first segment 145.

[0130] Understandably, by setting the length of the second groove wall 163 to be greater than or equal to the length of the first groove wall 162 along the arrangement direction of the two first sliding pin receiving holes 121, it can be ensured that the second groove wall 163 located below the positioning protrusion 43 reliably supports the first friction plate 41.

[0131] For example, in the embodiment shown in FIG15, along the length direction of the two first sliding pin receiving holes 121, the length of the first groove wall 162 is less than the length of the second groove wall 163, and the width of the first segment 145 is greater than the width of the second segment 146. In the vertical direction, the second groove wall 163 on the lower side of the mounting groove 16 has a larger length dimension along the arrangement direction of the two first sliding pins, which can provide better support for the first friction plate 41.

[0132] In one embodiment, the caliper bracket 10 includes two support arms 17, two connecting arms 18, and two additional mounting slots 16. Each support arm 17 is spaced apart along the axial direction of the wheel 1001 from a cantilever 14 on the side away from the brake motor 30. Each connecting arm 18 is used to fix a support arm 17 and a cantilever 14 together. Each support arm 17 includes one of the two additional mounting slots 16. Along the axial direction of the wheel 1001, the distance between a support arm 17 and a cantilever 14 is greater than the thickness of the brake disc 1003 of the wheel 1001. Along the arrangement direction of the two sliding pin receiving holes 12, the openings of the two additional mounting slots 16 are opposite each other, and each of the two additional mounting slots 16 is used to receive a positioning protrusion 43 of another friction pad 40.

[0133] Please refer to Figures 19 and 20 for reference. Figure 19 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application; Figure 20 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application.

[0134] As shown in Figures 19 and 20, along the axial direction of the wheel 1001, the two cantilever arms 14 and two support arms 17 of the caliper bracket 10 are located on both sides of the brake disc 1003. The two cantilever arms 14 are located on the side of the brake disc 1003 closer to the brake motor 30, and the two support arms 17 are located on the side of the brake disc 1003 away from the brake motor 30. Along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, two connecting arms 18 are located on the side of the two cantilever arms 14 and two support arms 17 away from the rotation axis of the wheel 1001. Each connecting arm 18 extends along the axial direction of the wheel 1001 and is used to fixably connect one support arm 17 and one cantilever arm 14. The support arm 17 is also provided with a mounting groove. For ease of description, the mounting groove on the cantilever arm 14 will be defined as the first mounting groove 161, and the mounting groove on the support arm 17 will be defined as the second mounting groove 171. That is, each cantilever 14 includes a first mounting groove 161, and the openings of the two first mounting grooves 161 on the two cantilever 14 are arranged opposite to each other. Each first mounting groove 161 is used to install a positioning protrusion 43 of the first friction plate 41. Each support arm 17 includes a second mounting groove 171, and the openings of the two second mounting grooves 171 on the two support arms 17 are arranged opposite to each other. Each second mounting groove 171 is used to install a positioning protrusion 43 of the second friction plate 42.

[0135] Thus, the two friction pads 40 are arranged on both sides of the brake disc 1003 along the axial direction of the wheel 1001, and can contact the brake disc 1003 from both sides under the drive of the caliper 20, thereby ensuring the braking effect of the electromechanical braking system 100 provided in this application.

[0136] In one embodiment, each connecting arm 18 is used to connect the end of a cantilever 14 and the end of a support arm 17. The two first sliding pin receiving holes 121 of the caliper frame 10 can be formed on one connecting arm 18 respectively, thereby improving the stress conditions of the caliper frame 10 and enhancing the structural stability of the caliper frame 10.

[0137] In one embodiment, the caliper 20 includes two connecting holes 25 for passing through two connectors 90, which are used to securely connect to the brake motor 30. The arrangement direction of the two connecting holes 25 intersects the arrangement direction of the two sliding pin receiving holes 12, and the opening direction of the two connecting holes 25 along the axial direction of the wheel 1001 is opposite to the opening direction of the other two sliding pin receiving holes 12.

[0138] Please refer to Figures 21 and 22. Figure 21 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application; Figure 22 is an exploded view of a portion of the structure of the electromechanical braking system 100 provided in one embodiment of this application.

[0139] As shown in Figures 21 and 22, the caliper 20 body 23 has two connecting holes 25. Along the axial direction of the wheel 1001, the two connecting holes 25 are located on the side of the caliper 20 body 23 facing the brake motor 30. Alternatively, it can be understood that along the axial direction of the wheel 1001, the opening direction of the two connecting holes 25 is away from the caliper frame 10. The arrangement direction of the two connecting holes 25 intersects with the arrangement direction of the two first sliding pin receiving holes 121, that is, it intersects with the arrangement direction of the two second sliding pin receiving holes 22. The electromechanical braking system 100 provided in this application includes two connectors 90, which are used to extend into the two connecting holes 25 and to fix the brake motor 30 and the caliper 20 body 23.

[0140] Understandably, the electromechanical braking system 100 provided in this application uses two connecting holes 25 provided on the body 23 of the caliper 20 for fixed connection with the brake motor 30. Since the brake motor 30 extends approximately along the arrangement direction of the two second sliding pin receiving holes 22, this application ensures the reliability of the connection between the brake motor 30 and the body 23 of the caliper 20 by arranging the two connecting holes 25 in a direction that intersects with the arrangement direction of the two second sliding pin receiving holes 22.

[0141] In one embodiment, the body 23 of the caliper 20 includes a clearance hole 26 along the axial direction of the wheel 1001, located on the side of the caliper 20 body 23 facing the brake motor 30. The clearance hole 26 communicates into the receiving cavity 21 of the caliper 20 and is used to avoid the transmission member 50. That is, the transmission member 50 passes through the clearance hole 26 and extends into the receiving cavity 21 to drive the brake motor 30 and the first friction plate 41.

[0142] In one embodiment, the two connecting holes 25 are arranged on both sides of the clearance hole 26, along the arrangement direction of the two connecting holes 25. Thus, the connection positions of the brake motor 30 and the caliper 20 are located on both sides of the transmission member 50, which helps to improve the force conditions of the brake motor 30 and ensures that the brake motor 30 reliably drives the transmission member 50.

[0143] In one embodiment, the arrangement direction of the two connecting holes 25 is perpendicular to the arrangement direction of the two sliding pin receiving holes 12, that is, perpendicular to the arrangement direction of the two first sliding pin receiving holes 121. Since the extension direction of the brake motor 30 is parallel to the arrangement direction of the two first sliding pin receiving holes 121, this application can improve the structural stability of the caliper 20 by setting the arrangement direction of the two connecting holes 25 to be perpendicular to the arrangement direction of the two first sliding pin receiving holes 121.

[0144] In one embodiment, along the arrangement direction of the two sliding pin receiving holes 12, one of the other two sliding pin receiving holes 12, one connecting hole 25, another connecting hole 25, and another sliding pin receiving hole 12 of the other two sliding pin receiving holes 12 are arranged in sequence, and along the radial direction of the wheel 1001, one connecting hole 25 is arranged between the rotation axis of the wheel 1001 and the other connecting hole 25.

[0145] Please refer to Figure 23 for details. Figure 23 is a partial structural schematic diagram of an electromechanical braking system 100 provided in one embodiment of this application.

[0146] As shown in Figure 23, for ease of explanation, this application defines the two connecting holes 25 as the first connecting hole 251 and the second connecting hole 252, and the two second sliding pin receiving holes 22 as the second sliding pin receiving hole 22A and the second sliding pin receiving hole 22B, respectively. The second sliding pin receiving hole 22A corresponds to the first sliding pin receiving hole 121A, and the second sliding pin receiving hole 22B corresponds to the first sliding pin receiving hole 121B. Specifically, along the radial direction of the wheel 1001, the first connecting hole 251 is arranged between the rotation axis of the wheel 1001 and the second connecting hole 252. Along the arrangement direction of the two first sliding pin receiving holes 121, the second sliding pin receiving hole 22A, the first connecting hole 251, the second connecting hole 252, and the second sliding pin receiving hole 22A are arranged sequentially.

[0147] Therefore, the angle between the line connecting the second sliding pin receiving hole 22A and the second sliding pin receiving hole 22B and the line connecting the first connecting hole 251 and the second connecting hole 252 is less than 90°, and the angle between the two connecting holes 25 and the center of the wheel 1001 in the vertical direction is larger. At this time, the brake motor 30 can be further deflected relative to the arrangement direction of the two first sliding pin receiving holes 121 to avoid the suspension 1006, thereby better adapting to the wheel side space of the vehicle 1000.

[0148] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of protection of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An electromechanical braking system, characterized in that, The electromechanical braking system includes a caliper bracket, a caliper, and a brake motor. The caliper bracket includes two fixing holes and two sliding pin receiving holes. The two fixing holes are for passing through two fixing members, which are used to fix the vehicle frame and the caliper bracket. The two sliding pin receiving holes are used to fix two sliding pins. The caliper is used to fit over the two sliding pins and to fix the brake motor. The brake motor is used to drive at least one friction pad to slide along the axial direction of the two sliding pins. The two sliding pin receiving holes are arranged symmetrically along the radial axis of the wheel; The arrangement direction of the two fixing holes intersects with the arrangement direction of the two sliding pin receiving holes.

2. The electromechanical braking system as described in claim 1, characterized in that, The two fixing holes are arranged symmetrically along the radial axis of the wheel. In a direction perpendicular to the arrangement of the two sliding pin receiving holes, one of the fixing holes is arranged between the other fixing hole and the two sliding pin receiving holes.

3. The electromechanical braking system as described in claim 2, characterized in that, Along the arrangement direction of the two sliding pin receiving holes, one of the two sliding pin receiving holes, one fixing hole, the other of the two sliding pin receiving holes, and the other fixing hole are arranged in sequence.

4. The electromechanical braking system according to any one of claims 1-3, characterized in that, The angle between the arrangement direction of the two sliding pin receiving holes and the arrangement direction of the two fixing holes is less than or equal to 20°.

5. The electromechanical braking system according to any one of claims 1-4, characterized in that, The caliper bracket includes a base and two cantilever arms. The two fixing holes are located on the base. Each cantilever arm includes opposite ends along the arrangement direction perpendicular to the two sliding pin receiving holes, one end of which is used to fix the base, and the other end includes one of the sliding pin receiving holes.

6. The electromechanical braking system as described in claim 5, characterized in that, Along the arrangement direction perpendicular to the two sliding pin receiving holes, the length of one cantilever is less than the length of the other cantilever, and the one cantilever is arranged in front of the other cantilever along the first rotation direction of the wheel, the first rotation direction being the rotation direction when the wheel moves forward.

7. The electromechanical braking system as described in claim 6, characterized in that, Along the arrangement direction of the two sliding pin receiving holes, the width of one cantilever is greater than the width of the other cantilever; or, The width of one cantilever along the wheel axis is greater than the width of the other cantilever.

8. The electromechanical braking system according to any one of claims 5-7, characterized in that, The middle section of each cantilever includes a mounting groove, with the openings of the two mounting grooves facing each other along the arrangement direction of the two sliding pin receiving holes, and each mounting groove is used to accommodate a positioning protrusion of one of the friction pads.

9. The electromechanical braking system as described in claim 8, characterized in that, Along the arrangement direction perpendicular to the two sliding pin receiving holes, the width of each mounting groove is greater than the width of the positioning protrusion.

10. The electromechanical braking system as described in claim 8 or 9, characterized in that, Along the arrangement direction perpendicular to the two sliding pin receiving holes, each mounting groove includes two opposing groove walls, one groove wall being arranged between the other groove wall and the one sliding pin receiving hole, and the length of the one groove wall being less than or equal to the length of the other groove wall along the arrangement direction of the two sliding pin receiving holes.

11. The electromechanical braking system according to any one of claims 8-10, characterized in that, The caliper bracket includes two support arms, two connecting arms, and two additional mounting slots. Each support arm is spaced apart along the wheel axial direction from one of the cantilever arms on the side away from the brake motor. Each connecting arm is used to fixably connect one support arm and one cantilever arm. Each support arm includes one of the two additional mounting slots, wherein: Along the axial direction of the wheel, the distance between one of the support arms and one of the cantilever arms is greater than the thickness of the wheel's brake disc. The openings of the other two mounting slots are opposite each other along the arrangement direction of the two sliding pin receiving holes, and each of the other two mounting slots is used to receive the positioning protrusion of the other friction piece.

12. The electromechanical braking system according to any one of claims 1-11, characterized in that, The caliper includes two additional sliding pin receiving holes, the arrangement of which is parallel to the arrangement of the two sliding pin receiving holes. The openings of the two additional sliding pin receiving holes face the caliper frame along the axial direction of the wheel. Each of the two additional sliding pin receiving holes is used to accommodate one sliding pin.

13. The electromechanical braking system as described in claim 12, characterized in that, The caliper includes two connection holes for passing through two connectors, which are used to securely connect to the brake motor, wherein: The arrangement direction of the two connecting holes intersects with the arrangement direction of the two sliding pin receiving holes, and the opening direction of the two connecting holes along the wheel axis is opposite to the opening direction of the other two sliding pin receiving holes.

14. The electromechanical braking system as described in claim 13, characterized in that, Along the arrangement direction of the two sliding pin receiving holes, one of the other two sliding pin receiving holes, one of the connecting holes, the other connecting hole, and the other of the other two sliding pin receiving holes are arranged in sequence, and along the radial direction of the wheel, the connecting hole is arranged between the wheel's rotation axis and the other connecting hole.

15. A vehicle, characterized in that, The vehicle includes a frame, wheels, and an electromechanical braking system as described in any one of claims 1-14, wherein a caliper bracket in the electromechanical braking system is used to securely connect to the frame, and at least one friction pad in the electromechanical braking system is used to brake the brake disc of the wheel.

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