Electromechanical brake system and vehicle

Abstract

The invention provides an electro-mechanical brake system and a vehicle. The electronic mechanical braking system comprises a caliper frame, a caliper and a braking motor. The caliper frame includes two fixing holes and two sliding pin receiving holes. The two fixing holes are used for allowing two fixing pieces to penetrate through, and the two fixing pieces are used for fixedly connecting the frame and the caliper frame. The two sliding pin containing holes are used for fixing the two sliding pins, the calipers are used for being arranged on the two sliding pins in a sleeving mode and used for fixing the brake motor, and the brake motor is used for driving at least the friction plate to slide in the axial direction of the two sliding pins. The two sliding pin containing holes are used for being symmetrically arranged in the radial direction of the wheel. The arrangement direction of the two fixing holes intersects with the arrangement direction of the two sliding pin containing holes. The electronic mechanical braking system can better adapt to the wheel side space of the vehicle on the premise that the braking effect is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to an electronic mechanical braking system and a vehicle. Background Art

[0002] The electromechanical brake (EMB) system uses a motor and a mechanical feed mechanism to drive the brake. The electromechanical brake system has the characteristics of simple structure, sensitive response, stable load transmission, and no need to set up hydraulic pipelines, and has high transmission efficiency. When the electromechanical brake system is installed on the vehicle, it needs to adapt to the wheel side space of the vehicle. Summary of the invention

[0003] The present application provides an electronic mechanical braking system and a vehicle. The electronic mechanical braking system can better adapt to the wheel side space of the vehicle while ensuring the braking effect.

[0004] In a first aspect, the present application provides an electronic mechanical brake system. The electronic mechanical brake system includes a caliper frame, a caliper and a brake motor. A caliper frame includes two fixing holes and two sliding pin receiving holes. The two fixing holes are used to pass through two fixing members, and the two fixing members are used to fix and connect a vehicle frame and a caliper frame. The two sliding pin receiving holes are used to fix two sliding pins, and a caliper is used to be sleeved on the two sliding pins and to fix a brake motor, and a brake motor is used to drive at least one friction plate to slide along the axial direction of the wheel. The two sliding pin receiving holes are used to be 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.

[0005] The electronic mechanical brake system provided by the present application is respectively fixed with two fixings and two sliding pins by a caliper frame. The caliper frame is fixedly connected to the frame by two fixings, and the caliper frame is slidably connected to the caliper by two sliding pins. The caliper slides relative to the caliper frame by receiving the drive of the brake motor and drives the friction plate to brake the wheel. The arrangement direction of the two sliding pin receiving holes of the caliper frame intersects with the arrangement direction of the two fixing holes, and the caliper and the brake motor are tilted relative to the frame to avoid interference between the caliper or the brake motor and the suspension of the frame, so as to better adapt to the wheel side space of the vehicle. The two sliding pin receiving holes are symmetrically arranged along the radial axis of the wheel, which is conducive to controlling the braking radius of the caliper and the friction plate relative to the wheel, and ensuring the braking effect of the electronic mechanical brake system provided by the present application on the wheel.

[0006] In one implementation, the two fixing holes are arranged symmetrically along the radial axis of the wheel, and one of the two fixing holes is arranged between the other fixing hole and the two sliding pin accommodating holes along an arrangement direction perpendicular to the two sliding pin accommodating holes.

[0007] In this implementation, the electronic mechanical brake system provided by the present application can better adapt to the connection structure of the frame by limiting the arrangement of the two fixing holes, thereby expanding the scope of application of the electronic mechanical brake system provided by the present application.

[0008] In one implementation, along the arrangement direction of the two sliding pin accommodating holes, one of the two sliding pin accommodating holes, one fixing hole, another of the two sliding pin accommodating holes, and another fixing hole are arranged in sequence.

[0009] In this implementation, by limiting the arrangement of the two fixing holes and the two sliding pin accommodating 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.

[0010] In one implementation, an angle between an arrangement direction of the two sliding pin accommodating holes and an arrangement direction of the two fixing holes is less than or equal to 20°.

[0011] In this implementation, by limiting the angle range of the arrangement direction of the two fixing holes and the two sliding pin receiving holes, the caliper frame provides reliable support for the caliper and the friction plate, thereby ensuring the braking effect of the electronic mechanical brake system provided by the present application.

[0012] In one implementation, a caliper frame includes a base and two cantilevers, two fixing holes are located on one base, and each cantilever includes two opposite ends along an arrangement direction perpendicular to the two sliding pin accommodating holes, one end of which is used to be fixedly connected to a base, and the other end includes a sliding pin accommodating hole.

[0013] In this implementation, the base and two cantilevers of the caliper frame are arranged in a U shape, the caliper frame is reliably fixed to the vehicle frame through the base and the caliper is reliably supported by the two cantilevers. The space between the two cantilevers can be used to avoid the caliper and the friction plate.

[0014] In one implementation, the length of one cantilever is smaller than the length of the other cantilever along the arrangement direction perpendicular to the two sliding pin accommodating holes, and one cantilever is used to be arranged in front of the other cantilever along the first rotation direction of the wheel, and the first rotation direction is the rotation direction when the wheel moves forward.

[0015] 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 cantilevers have different lengths. The cantilever with a shorter length has better structural stability, and the cantilever with a shorter length is arranged in front of the other cantilever along the rotation direction of the wheel when it moves forward, so as to adapt to the force scenario of the friction plate and improve the braking effect of the electronic mechanical brake system provided by this application.

[0016] 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 accommodating holes.

[0017] In one implementation, the width of one cantilever along the axial direction of the wheel is greater than the width of the other cantilever.

[0018] In the above two implementation methods, the outer dimensions of the cantilever with a shorter length dimension are increased along the arrangement direction of the two sliding pin accommodating holes or along the axial direction of the wheel to improve the structural stability of the cantilever with a shorter length dimension, adapt to the force scenario of the friction plate and improve the braking effect.

[0019] In one implementation, the middle section of each cantilever includes a mounting groove, and the notches of the two mounting grooves are opposite to each other along the arrangement direction of the two sliding pin accommodating holes, and each mounting groove is used to accommodate a positioning protrusion of a friction plate.

[0020] In this implementation, the caliper frame is also used to install the friction plate and allow the friction plate to slide along the axial direction of the wheel. The two positioning protrusions of the friction plate are arranged relatively along the length direction of the friction plate, and the length direction of the friction plate is parallel to the arrangement direction of the two sliding pin receiving holes, so as to ensure that the friction plate is symmetrically installed on the caliper frame relative to the radial axis of the wheel, thereby improving the braking effect of the friction plate on the wheel brake disc.

[0021] In one implementation, along a direction perpendicular to the arrangement direction of the two sliding pin accommodating holes, the width of each mounting groove is greater than the width of the positioning protrusion.

[0022] In this implementation, a gap is left between the mounting groove of the caliper frame and the positioning protrusion of the friction plate along the arrangement direction perpendicular to the two sliding pin accommodating holes. The friction plate can be displaced relative to the caliper frame along the arrangement direction perpendicular to the two sliding pin accommodating holes, thereby forming a buffer when the friction plate contacts the brake disc to improve the stress condition of the friction plate and extend the service life of the friction plate.

[0023] In one implementation, along a direction perpendicular to the arrangement of the two sliding pin accommodating holes, each mounting groove includes two opposite groove walls, one of which is arranged between the other groove wall and a sliding pin accommodating hole, and the length of one groove wall along the arrangement direction of the two sliding pin accommodating holes is less than or equal to the length of the other groove wall.

[0024] In this implementation, each cantilever includes two sections along a direction perpendicular to the arrangement direction of the two sliding pin receiving holes, one of which is located on the side of the mounting slot facing the base, and the other is located on the side of the mounting slot facing the sliding pin receiving hole. The cantilever section located on the side of the mounting slot facing the base is located below the friction plate in the vertical direction, that is, the width of a groove wall on the lower side of the mounting slot in the vertical direction is larger, so that a groove wall can form a better support effect on the friction plate.

[0025] In one implementation, a caliper frame includes two support arms, two connecting arms and two other mounting grooves, each support arm is used to be arranged at intervals along the axial direction of the wheel on a side of a cantilever away from a brake motor, each connecting arm is used to fixedly connect a support arm and a cantilever, and each support arm includes one of the other two mounting grooves. In the axial direction of the wheel, the spacing between a support arm and a cantilever is greater than the thickness of the brake disc of the wheel. The notches of the other two mounting grooves are opposite to each other along the arrangement direction of the two sliding pin receiving holes, and each of the other two mounting grooves is used to accommodate the positioning protrusion of another friction plate.

[0026] In this implementation, the two cantilevers and two support arms of the caliper frame along the axial direction of the wheel are respectively located on both sides of the brake disc. The two mounting grooves formed by the two cantilevers are used to install one friction plate, and the other two mounting grooves formed by the two support arms are used to install another friction plate. The two friction plates can be arranged on both sides of the brake disc along the axial direction of the wheel, and contact the brake disc from both sides of the brake disc under the drive of the caliper, thereby ensuring the braking effect of the electronic mechanical brake system provided by the present application.

[0027] In one implementation, a caliper includes two additional sliding pin accommodating holes, the arrangement direction of the additional two sliding pin accommodating holes is parallel to the arrangement direction of the two sliding pin accommodating holes, the openings of the additional two sliding pin accommodating holes are axially toward a caliper frame, and each of the additional two sliding pin accommodating holes is used to sleeve a sliding pin.

[0028] In this implementation, the caliper is respectively sleeved on two sliding pins through the other two sliding pin receiving holes and is slidably connected to the caliper frame. The caliper is driven by the brake motor to slide relative to the caliper frame and drive the friction plate to brake the wheel. The other two sliding pin receiving holes of the caliper are symmetrically arranged relative to the radial axis of the wheel, so that the caliper drives the friction plate to brake the wheel along the radial direction of the wheel and ensures the braking effect.

[0029] In one implementation, a caliper includes two connection holes, the two connection holes are used to pass through two connection pieces, and the two connection pieces are used to fix and connect a brake motor. The arrangement direction of the two connection holes intersects with the arrangement direction of the two sliding pin receiving holes, and the opening direction of the two connection holes along the axial direction of the wheel is opposite to the opening direction of the other two sliding pin receiving holes.

[0030] 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 frame are arranged in sequence along the axial direction of the wheel. The two connecting holes are used to face the brake motor and fix the brake motor and the caliper through the connecting piece. The brake motor extends roughly along the arrangement direction of the two sliding pin receiving holes of the caliper frame. The extension direction of the brake motor intersects with the arrangement direction of the two fixing holes of the caliper frame, so that the brake motor can be tilted and extended relative to the two fixing holes to avoid the suspension of the vehicle, and the electronic mechanical brake system provided by the present application can better adapt to the wheel side space of the vehicle.

[0031] In one implementation, the arrangement direction of the two connection holes is perpendicular to the arrangement direction of the two sliding pin receiving holes. At this time, the extension direction of the brake motor is parallel to the arrangement direction of the two sliding pin receiving holes.

[0032] In one implementation, along the arrangement direction of the two sliding pin accommodating holes, one sliding pin accommodating hole among the other two sliding pin accommodating holes, one connecting hole, another connecting hole and another sliding pin accommodating hole among the other two sliding pin accommodating holes are arranged in sequence, and along the radial direction of the wheel, one connecting hole is arranged between the rotation axis of the wheel and the other connecting hole.

[0033] In this implementation, the angle between the arrangement direction of the two connection holes and the arrangement direction of the two sliding pin receiving holes is less than 90°, and the angle between the two connection 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 side space of the vehicle.

[0034] In one implementation, the caliper includes a receiving chamber for receiving a portion of a transmission member, the transmission member being used to drive and connect a brake motor and a friction plate along the axial direction of the wheel. The brake motor drives a friction plate to move relative to the caliper frame through the transmission member and drives another friction plate through the caliper.

[0035] In one implementation, the housing of the brake motor is also used to accommodate a gear set of a reducer, and the brake motor is connected to the transmission member through the reducer transmission and drives a friction plate and a caliper.

[0036] In one implementation, the housing of the brake motor is also used to accommodate a circuit board, and the circuit board is used to fix the drive circuit of the brake motor. This improves the integration of the electronic mechanical brake system provided by the present application and achieves miniaturization, which is conducive to better adapting to the wheel side space of the vehicle.

[0037] In a second aspect, the present application provides a vehicle, the vehicle comprising a frame, wheels, and an electronic mechanical brake system provided by any implementation of the first aspect, wherein a caliper frame in the electronic mechanical brake system is used to fix the frame, and at least one friction plate in the electronic mechanical brake system is used to brake a brake disc of a wheel. The vehicle provided in the second aspect of the present application has a more compact internal structure while ensuring a braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 A schematic diagram of a partially enlarged structure of the wheel position of a vehicle provided in one embodiment of the present application;

[0040] Figure 2 A schematic diagram of a partially enlarged structure of the wheel position of a vehicle provided in one embodiment of the present application;

[0041] Figure 3 A partial exploded schematic diagram of the wheel position of a vehicle provided in one embodiment of the present application;

[0042] Figure 4 A cross-sectional schematic diagram of an electronic mechanical braking system provided in one embodiment of the present application;

[0043] Figure 5 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0044] Figure 6 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0045] Figure 7 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0046] Figure 8 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0047] Fig. 9 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0048] Fig.10 It is a schematic diagram of the structure of an electronic mechanical braking system and a frame at the wheel in the prior art;

[0049] Fig.11 It is a schematic diagram of the structure of an electronic mechanical braking system and a frame at the wheel in the prior art;

[0050] Fig.12 A schematic diagram of the structure of an electronic mechanical braking system and a vehicle frame provided in one embodiment of the present application from a side perspective;

[0051] Fig.13 A schematic diagram of the structure of an electronic mechanical braking system and a vehicle frame provided in one embodiment of the present application from another side perspective;

[0052] Fig.14 A schematic diagram of the structure of an electromechanical braking system provided in one embodiment of the present application;

[0053] Fig.15 A schematic diagram of a partial structure of an electronic mechanical braking system provided in one embodiment of the present application;

[0054] Fig.16 A schematic diagram of a partial structure of an electronic mechanical braking system provided in one embodiment of the present application;

[0055] Fig.17 This is an exploded schematic diagram of an electromechanical braking system provided in one embodiment of the present application;

[0056] Fig.18 A partially enlarged schematic diagram of an electromechanical braking system provided in one embodiment of the present application;

[0057] Fig.19 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0058] Fig. 20 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0059] Fig.21 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0060] Fig. 22 It is a schematic diagram of the exploded structure of a part of the electromechanical braking system provided in one embodiment of the present application;

[0061] Fig.23 A schematic diagram of the partial structure of an electronic mechanical braking system provided in an embodiment of the present application.

[0062] Figure numbers: 1000-vehicle; 1001-wheel; 1002-frame; 1003-brake disc; 1004-connecting structure; 1005-through hole; 1006-suspension; 100-electromechanical brake system; 10-caliper frame; 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-avoidance 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-caliper; 21-accommodating chamber; 22-second sliding pin accommodating hole; 22A-second sliding pin accommodating hole; 22B-second sliding pin accommodating hole; 23-body; 24-support ear; 25-connecting hole; 251-first connecting hole; 252-second connecting hole; 26-avoidance hole; 30-brake motor; 31-housing; 40-friction plate; 41-first friction plate; 42-second friction plate; 43-positioning protrusion; 50-transmission member; 60-reducer; 70-fixing member; 80-sliding pin; 90-connecting member;

[0063] Prior art: 1000'-vehicle; 1006'-suspension; 100'-electromechanical brake system; 20'-caliper; 23'-body; 30'-brake motor; 11'-fixing hole. DETAILED DESCRIPTION

[0064] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] The present application provides an electronic mechanical braking system. The electronic mechanical braking system includes a caliper frame, a caliper and a brake motor. A caliper frame includes two fixing holes and two sliding pin receiving holes. The two fixing holes are used to pass through two fixings, and the two fixings are used to fix and connect a vehicle frame and a caliper frame. The two sliding pin receiving holes are used to fix two sliding pins, and a caliper is used to be sleeved on the two sliding pins and to fix a brake motor, and a brake motor is used to drive at least one friction plate to slide along the axial direction of the two sliding pins. The two sliding pin receiving holes are used to be 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 electronic mechanical braking system provided by the present application can better adapt to the wheel side space of the vehicle while ensuring the braking effect.

[0066] The present application provides a vehicle, the vehicle comprising a frame, wheels and the above-mentioned electromechanical brake system, the caliper frame in the electromechanical brake system is used to fix the frame, and at least one friction plate in the electromechanical brake system is used to brake the brake disc of the wheel. The vehicle provided by the present application has a more compact internal structure while ensuring the braking effect.

[0067] Please also read Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of a partially enlarged structure of a wheel 1001 of a vehicle 1000 provided in one embodiment of the present application; Figure 2 This is a schematic diagram of a partially enlarged structure of a wheel 1001 of a vehicle 1000 provided in one embodiment of the present application; Figure 3 This is a partial exploded schematic diagram of the position of a wheel 1001 of a vehicle 1000 provided in an embodiment of the present application.

[0068] like Figure 1 , Figure 2 and Figure 3 As shown, the vehicle 1000 provided in the present application includes a frame 1002, a wheel 1001 and an electronic mechanical braking system 100 provided in the present application. The electronic mechanical braking system 100 is arranged corresponding to the position of the wheel 1001, and the electronic mechanical braking system 100 is used to brake the wheel 1001. It should be noted that in order to clearly illustrate the positional relationship and connection relationship between the frame 1002, the wheel 1001 and the electronic mechanical braking system 100, the frame 1002 in the figure only illustrates a partial structure close to the wheel 1001.

[0069] A brake disc 1003 is coaxially fixed to the wheel 1001, and the brake disc 1003 rotates synchronously with the wheel 1001 during the driving of the vehicle 1000. The electronic mechanical brake system 100 is arranged corresponding to the position of the brake disc 1003. The electronic mechanical brake system 100 generates friction force by contacting with the brake disc 1003 to brake the brake disc 1003 and indirectly brake the wheel 1001.

[0070] exist Figure 1 In the illustrated embodiment, only one wheel 1001 and one electronic mechanical brake system 100 are used as an example for illustrative description. In actual application scenarios, some wheels 1001 or each wheel 1001 of the vehicle 1000 may be provided with an electronic mechanical brake system 100 accordingly.

[0071] exist Figure 3 In the illustrated embodiment, the electronic mechanical brake system 100 provided by the present application includes a caliper frame 10, a caliper 20, a brake motor 30 and a friction plate 40. The electronic mechanical brake system 100 is used to be fixed to the vehicle frame 1002 through the caliper frame 10, and is also used to be slidably connected to the caliper 20 through the caliper frame 10. The caliper 20 is used to fix the brake motor 30 and is used to drive the friction plate 40. The brake motor 30 is used to provide a driving force to drive the caliper 20 to drive the friction plate 40 to slide relative to the caliper frame 10. The friction plate 40 is used to contact the brake disc 1003 and generate friction to brake the brake disc 1003.

[0072] In one embodiment, the caliper frame 10 is used to be 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 drive the friction plate 40 to move toward the direction close to the brake disc 1003.

[0073] In one embodiment, there are two friction plates 40, and along the axial direction of the wheel 1001, the brake motor 30, one of the friction plates 40, the brake disc 1003, and the other friction plate 40 are arranged in sequence. For ease of introduction, the two friction plates 40 are defined as a first friction plate 41 and a second friction plate 42, respectively.

[0074] For example, please refer to Figure 4 , Figure 4 Schematic cross-sectional view of an electromechanical brake system 100 provided in one embodiment of the present application.

[0075] like Figure 4As shown, along the axial direction of the wheel 1001, the brake motor 30, the first friction plate 41, the brake disc 1003, and the second friction plate 42 are arranged in sequence. The first friction plate 41 is used for transmission connection with the brake motor 30. The second friction plate 42 is used for fixed connection with the end of the caliper 20 away from the brake motor 30 along the axial direction of the wheel 1001. The brake motor 30 is used to drive the first friction plate 41 to move relative to the caliper frame 10 and abut 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 plate 42 to slide toward the brake disc 1003 and abut the brake disc 1003. The brake motor 30 brakes the brake disc 1003 by driving the first friction plate 41 and the second friction plate 42 to move closer to each other along the axial direction of the wheel 1001 and abut the brake disc 1003 together.

[0076] exist Figure 4 In the illustrated embodiment, the caliper 20 includes a housing chamber 21, the housing chamber 21 is used to accommodate part of the transmission member 50, and the transmission member 50 is used to drive and connect 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, the transmission member 50, the first friction plate 41, the brake disc 1003, and the second friction plate 42 are arranged in sequence. The transmission member 50 is used to convert the rotational motion of the motor shaft of the brake motor 30 into the axial displacement of the transmission member 50 along the wheel 1001, and output it toward the first friction plate 41. As a result, the brake motor 30 can drive the first friction plate 41 to move relative to the caliper frame 10 through the transmission member 50 and move toward the direction close to the brake disc 1003 to abut against the brake disc 1003. The first friction plate 41 abuts against the brake disc 1003 and receives the reverse thrust applied by the brake disc 1003, and the brake motor 30 continues to output the driving force, so that the transmission member 50 can drive the caliper 20 to slide relative to the caliper frame 10, thereby driving the second friction plate 42 to move toward the direction close to the brake disc 1003 to abut against the brake disc 1003. As a result, the first friction plate 41 and the second friction plate 42 are close to each other and contact the brake disc 1003 to form friction, so as to achieve the effect of the electronic mechanical brake system 100 braking the brake disc 1003.

[0077] In one embodiment, the transmission member 50 includes a ball screw, and the brake motor 30 drives the screw to rotate to drive the sleeve to move, and the sleeve is used to push the first friction plate 41 to move toward the brake disc 1003.

[0078] In one embodiment, the housing 31 of the brake motor 30 is also used to accommodate a gear set of a reducer 60, and the brake motor 30 is connected to the transmission member 50 through the reducer 60 and drives the first friction plate 41 and the caliper 20. That is, the electronic mechanical brake system 100 provided in the present application includes a reducer 60. The gear set of the reducer 60 is used to be accommodated and fixed in the housing 31 of the brake motor 30, and is used to drive the motor shaft and the transmission member 50 of the brake motor 30. The reducer 60 is used to adjust the speed and torque of the driving force output by the brake motor 30.

[0079] In one embodiment, the housing 31 of the brake motor 30 is also used to accommodate a circuit board (not shown in the figure), and the circuit board is used to fix the drive circuit of the brake motor 30. That is, the electronic mechanical brake system 100 provided in the present application includes a circuit board, which is accommodated and fixed in the housing 31 of the brake motor 30, and the circuit board is used to control the brake motor 30. Therefore, the electronic mechanical brake system 100 provided in the present application has a higher degree of integration and is conducive to miniaturization, and can better adapt to the wheel side space of the vehicle 1000.

[0080] For the electronic mechanical brake system 100 provided in the present application, a caliper frame 10 includes two fixing holes 11 and two sliding pin receiving holes 12. The two fixing holes 11 are used to pass through two fixing members 70, and the two fixing members 70 are used to fix and connect the vehicle frame 1002 and the caliper frame 10. The two sliding pin receiving holes 12 are used to fix two sliding pins 80, and the caliper 20 is used to be sleeved on the two sliding pins 80. The arrangement direction of the two fixing holes 11 intersects with the arrangement direction of the two sliding pin receiving holes 12.

[0081] Please see Figure 5 and Figure 6 , Figure 5 It is a schematic diagram of an exploded view of a part of the structure of an electronic mechanical braking system 100 provided in one embodiment of the present application; Figure 6 1 is a schematic diagram of a partial structure of an electronic mechanical brake system 100 provided in an embodiment of the present application. In order to clearly illustrate the connection structure 1004 between the caliper frame 10 and the frame 1002, Figure 5 The structures of the caliper 20, the brake motor 30 and the friction plate 40 are omitted.

[0082] like Figure 5 and Figure 6As shown, the vehicle frame 1002 includes a connection structure 1004, and the connection structure 1004 of the vehicle frame 1002 includes two through holes 1005. The two fixing holes 11 of the caliper frame 10 are used to align with the two through holes 1005 of the vehicle frame 1002 respectively. The caliper frame 10 is fixed to the vehicle frame 1002 by two fixing members 70. The axis of each fixing member 70 is parallel to the axis of the wheel 1001. Each fixing member 70 is used to pass through a fixing hole 11 and a through hole 1005 to fix the connection structure 1004 connecting the caliper frame 10 and the vehicle frame 1002.

[0083] The two sliding pin receiving holes 12 of the caliper frame 10 are used to fix two sliding pins 80 respectively. The axis of each sliding pin 80 is parallel to the axial direction of the wheel 1001. The caliper 20 is used to be sleeved on the two sliding pins 80, so as to be slidably connected with the caliper frame 10 along the axial direction of the wheel 1001. Figure 6 In the illustration, one end of each sliding pin 80 is used to be fixed to a sliding pin receiving hole 12, and the other end of each sliding pin 80 is used to extend along a direction parallel to the axis of the wheel 1001 toward a side away from the brake disc 1003.

[0084] The caliper 20 includes two other sliding pin accommodating holes, and the arrangement direction of the other two sliding pin accommodating holes is parallel to the arrangement direction of the two sliding pin accommodating holes 12. The openings of the other two sliding pin accommodating holes are axially toward the caliper frame 10 along the wheel 1001, and each sliding pin accommodating hole 12 of the other two sliding pin accommodating holes is used to sleeve a sliding pin 80.

[0085] For the sake of convenience, this application will hereinafter 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 in parallel to the axial direction of 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 sleeve a sliding pin 80.

[0086] In another way of description, each sliding pin 80 is used to pass through a first sliding pin receiving hole 121 and penetrate 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 through the two sliding pins 80. The caliper 20 receives the drive of the brake motor 30 to slide relative to the caliper frame 10 and drives the second friction plate 42 to brake the wheel 1001.

[0087] Please cooperate Figure 7 , Figure 8and Fig. 9 , Figure 7 It is a schematic diagram of an exploded view of a part of the structure of an electronic mechanical braking system 100 provided in one embodiment of the present application; Figure 8 It is a schematic diagram of an exploded view of a part of the structure of an electronic mechanical braking system 100 provided in one embodiment of the present application; Fig. 9 It is a schematic diagram of the exploded structure of a part of the electromechanical brake system 100 provided in one embodiment of the present application.

[0088] like Figures 7 to 9 As shown, 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 ears 24. The two ears 24 are arranged on both sides of the body 23. Each second sliding pin receiving hole 22 is formed on one ear 24, and the body 23 of the caliper 20 is arranged between the two second sliding pin receiving holes 22. The body 23 of the caliper 20 is used to accommodate the transmission member 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 body 23 of the caliper 20 is convenient for adapting to the wheel side space of the vehicle 1000.

[0089] Along the axial direction of the wheel 1001, the side of the caliper 20 away from the brake disc 1003 is used to fix the brake motor 30. Because the body 23 of the caliper 20 is inclined relative to the arrangement direction of the two fixing holes 11, the brake motor 30 is offset toward one of the two fixing holes 11 along the arrangement direction of the two fixing holes 11 along the body 23 of the caliper 20. Further, the brake motor 30 also extends from one side of the body 23 of the caliper 20 roughly along the arrangement direction of the two second sliding pin accommodating holes 22, and the direction in which the brake motor 30 extends is opposite to the direction in which the brake motor 30 is offset toward one of the fixing holes 11 along the body 23 of the caliper 20. As a result, the brake motor 30 extends obliquely relative to the two fixing holes 11. The obliquely extended brake motor 30 is convenient for adapting to the wheel side space of the vehicle 1000.

[0090] Please see Fig.10 , Fig.11 , Fig.12 and Fig.13 , Fig.10 It is a schematic diagram of the structure of an electronic mechanical braking system 100' and a vehicle frame 1002' at the wheel in the prior art; Fig.11It is a structural schematic diagram of an electronic mechanical brake system 100' and a frame 1002' at the wheel in the prior art;

[0091] Fig.12 This is a structural schematic diagram of an electronic mechanical braking system 100 and a vehicle frame 1002 provided in one embodiment of the present application from a side perspective; Fig.13 It is a structural schematic diagram of the electronic mechanical braking system 100 and the vehicle frame 1002 provided in one embodiment of the present application from another side perspective.

[0092] like Figures 10 to 13 , the frame 1002 includes a suspension 1006 at a position close to the wheel 1001, and the suspension 1006 is close to the connection structure 1004 of the frame 1002. For the electronic mechanical brake system 100' in the prior art, the body 23' of the caliper 20' is roughly arranged vertically between the two fixing holes 11' along the arrangement direction of the two fixing holes 11', and the brake motor 30' extends from one side of the body 23' of the caliper 20' along the arrangement direction parallel to the two fixing holes 11'. The brake motor 30' and the body 23' of the caliper 20' are easy to interfere with the suspension 1006' of the vehicle 1000', thereby limiting the steering angle range of the vehicle 1000'. For the electronic mechanical brake system 100 provided in the present application, by setting the body 23 of the caliper 20 to be inclined relative to the arrangement direction of the two fixing holes 11, the brake motor 30 is driven to deviate to one side relative to the arrangement direction of the two fixing holes 11 and then extend to the other side. The distance between the brake motor 30 and the suspension 1006 of the vehicle 1000 is larger, and a larger avoidance space can be provided for the suspension 1006 during the steering process of the wheel 1001 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, thereby improving the processability and assemblability of the electronic mechanical brake system 1000 of the present application.

[0093] For the electronic mechanical brake system 100 provided by the present application, the two sliding pin receiving holes 12 of the caliper frame 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 body 23 of the caliper 20 is offset to one side relative to the arrangement direction of the two fixing holes 11 and is tilted relative to the center line of the line connecting the two fixing holes 11, the transmission member 50 and the friction plate 40 are also offset and tilted together with the body 23 of the caliper 20. The two second sliding pin receiving holes 22 are arranged symmetrically along the radial axis of the wheel 1001, so that the body 23 of the caliper 20 is roughly symmetrically distributed along the radial direction of the wheel 1001, and the transmission member 50 and the friction plate 40 are also symmetrically distributed along the radial direction of the wheel 1001. The transmission member 50 can transmit the driving force to the friction plate 40 relatively evenly, and drive the friction plate 40 to contact the brake disc 1003 relatively symmetrically along the radial direction of the wheel 1001, thereby ensuring the braking effect.

[0095] Please see Fig.14 , Fig.14 Schematic diagram of the structure of an electronic mechanical braking system 100 provided in an embodiment of the present application.

[0096] like Fig.14 As shown, the dotted line in the figure is the trajectory of the point of action of the force applied by the friction plate 40 to the brake disc 1003, O1 is the axis of the wheel 1001, O2 is the point of action of the braking force applied by the friction plate to the brake disc in the prior art, O3 is the point of action of the braking force applied by the transmission member 50 and the friction plate 40 of the present application to the brake disc 1003, and the braking radius r is the distance between the axis O1 of the wheel 1001 and the force center of the friction plate 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] exist Fig.14 In the illustrated embodiment, the distance between O1 and O2 is equal to the distance between O1 and O3, that is, the braking radius of the electronic mechanical braking system 100 provided by the present application is equal to the braking radius of the electronic mechanical braking system 100' in the prior art. In other words, the electronic mechanical braking system 100 provided by the present application can have the same braking effect as the electronic mechanical braking system 100' in the prior art.

[0098] It can be understood that the electronic mechanical brake system 100 provided by the present application is formed by defining the two first sliding pin receiving holes 121 to be symmetrically arranged along the radial axis of the wheel 1001, and by adjusting the distance between the first sliding pin receiving holes 121 and the fixing hole 11 along the direction perpendicular to the arrangement of the two first sliding pin receiving holes 121, so as to indirectly adjust the distance between the two first sliding pin receiving holes 121 and the center of the wheel 1001 along the radial direction of the wheel 1001. And thereby controlling 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, so as to achieve the effect of controlling the braking radius of the electronic mechanical brake system 100 provided by the present application relative to the wheel 1001. That is, by defining the two sliding pin receiving holes 12 of the caliper frame 10 to be symmetrically arranged along the radial axis of the wheel 1001, it is convenient to adjust the braking radius of the electronic mechanical brake system 100 provided by the present application on the wheel 1001. The electronic mechanical braking system 100 provided in the present application can better adapt to the wheel side space of the vehicle 1000 and increase the steering angle range of the vehicle 1000 while ensuring the braking effect.

[0099] In one embodiment, along the vertical direction, the electronic mechanical brake system 100 provided by the present application is located above the rotation axis of the wheel 1001 .

[0100] In one embodiment, along the radial direction of the wheel 1001, the distance between each first sliding pin receiving hole 121 and the rotation axis of the wheel 1001 is greater than the distance between each fixing hole 11 and 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 , and one of the two fixing holes 11 is arranged between the other fixing hole 11 and the two sliding pin accommodating holes 12 along an arrangement direction perpendicular to the two sliding pin accommodating holes 12 .

[0102] Please see Fig.15 , Fig.15 Schematic diagram of a partial structure of an electronic mechanical braking system 100 provided in an embodiment of the present application.

[0103] like Fig.15As shown, for the convenience of introduction, the two fixing holes 11 are defined as the first fixing hole 111 and the second fixing hole 112. Along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, the second fixing hole 112 is located between the first fixing hole 111 and 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 symmetry axis 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 of the 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 connection structure of the frame 1002' in the prior art, two through holes are arranged symmetrically with respect to the radial axis of the wheel. The electronic mechanical brake system 100 provided in the present application is arranged symmetrically along the radial axis of the wheel 1001 by setting two fixing holes 11 so that the two fixing holes 11 can adapt to the two through holes on the connection structure of the frame in the prior art. Therefore, the electronic mechanical brake system 100 provided in the present application can be adapted to the vehicle 1000' in the prior art through the caliper frame 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', and better adapt to the wheel side space of the prior art vehicle 1000' while ensuring the braking effect. By limiting the arrangement of the two fixing holes 11, the scope of application of the electronic mechanical brake system 100 provided in the present application can be expanded.

[0105] In one embodiment, along the arrangement direction of the two sliding pin accommodating holes 12, one sliding pin accommodating hole 12 of the two sliding pin accommodating holes 12, a fixing hole 11, another sliding pin accommodating hole 12 of the two sliding pin accommodating holes 12 and another fixing hole 11 are arranged in sequence.

[0106] The two sliding pins 80 pass through the two first sliding pin receiving holes 121 to connect the caliper frame 10 and the lug 24 of the caliper 20, and the two fixing members 70 pass through the two fixing holes 11 to connect the caliper frame 10 and the connecting structure 1004 of the vehicle frame 1002. The arrangement of the two sliding pins 80 and the two fixing members 70 is the same as the arrangement of the two first sliding pin receiving holes 121 and the two fixing holes 11. That is, along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, one sliding pin 80, one fixing member 70, another sliding pin 80, and another fixing member 70 are arranged in sequence. Thus, the angle range between the connecting line between the two sliding pins 80 and the connecting line between the two fixing members 70 is limited. In other words, such an arrangement limits the angle range between the center line of the connecting line between the two sliding pins 80 and the center line of the connecting line between the two fixing members, thereby improving the force of the caliper frame 10 and enhancing the structural stability of the caliper frame 10. The present application limits the arrangement of the two fixing holes 11 and the two first sliding pin accommodating holes 121 to limit the angle range 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] Exemplarily, the suspension 1006 of the vehicle 1000 is arranged relatively close to the first fixing hole 111. The body 23 of the caliper 20 is inclined toward the second fixing hole 112 relative to the arrangement direction of the two fixing holes 11. For the sake of convenience, the two first sliding pin receiving holes 121 of the caliper frame 10 are defined as the first sliding pin receiving hole 121A and the first sliding pin receiving hole 121B in the following of this application. Along the arrangement direction perpendicular to the first sliding pin receiving hole 121A and the first sliding pin receiving hole 121B, 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 in sequence. Since the body 23 of the caliper 20 is inclined toward the second fixing hole 112, by arranging the two first sliding pin holes and the two fixing holes 11 in the above manner, the angle of inclination of the body 23 of the caliper 20 toward the second fixing hole 112 can be limited, the force of the caliper frame 10 is improved, the force of the caliper frame 10 is ensured to be relatively uniform, and the structural stability of the caliper frame 10 is improved. In addition, since the brake motor 30 is extended from the side of the body 23 of the caliper 20 close to 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, the direction in which the brake motor 30 is extended is opposite to the direction in which the brake motor 30 is offset toward the second fixing hole 112 along the body 23 of the caliper 20. By limiting the angle of inclination of the body 23 of the caliper 20 toward the second fixing hole 112, the body 23 of the caliper 20 is prevented from being too large in inclination, and interference with the partial structure of the frame 1002 located above the wheel side space of the vehicle 1000 is avoided.

[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 hole 121A and the first sliding pin receiving hole 121B and the line connecting the first fixing hole 111 and the second fixing hole 112 is less than or equal to 20°. Or it can be described as that the angle between the center line of the line connecting the first sliding pin receiving hole 121A and the first sliding pin receiving hole 121B and the center line 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 body 23 of the caliper 20 relative to the caliper frame 10.

[0109] It can be understood that the electronic mechanical brake system 100 provided in the present application limits the angle range of the arrangement direction of the two first sliding pin accommodating holes 121 and the two fixing holes 11 so that the caliper frame 10 can reliably support the caliper 20 and the friction plate 40, thereby ensuring the braking effect of the electronic mechanical brake system 100 provided in the present application.

[0110] In one embodiment, the caliper frame 10 includes a base 13 and two cantilevers 14, and the two fixing holes 11 are located on the base 13, along a direction perpendicular to the arrangement of the two sliding pin accommodating holes 12, each cantilever 14 includes two opposite ends, one end is used to fix and connect the base 13, and the other end includes a sliding pin accommodating hole 12.

[0111] Please see Fig.16 , Fig.16 Schematic diagram of a partial structure of an electronic mechanical braking system 100 provided in an embodiment of the present application.

[0112] like Fig.16 As shown, 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 than the two cantilevers 14, the base 13 is used to be fixedly connected to the connection structure 1004 of the frame 1002, and the cantilever 14 is used to be slidably connected to the caliper 20. Specifically, two fixing holes 11 are provided on the base 13. Each fixing member 70 passes through a through hole 1005 of the connection structure 1004 and a fixing hole 11 to fix the base 13 and the connection structure 1004. Each cantilever 14 includes a first end 141 and a second end 142 opposite to each other. 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 than the second end 142. The two cantilevers 14 are used to be 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 slidably connect 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 frame 10 and the two cantilevers 14 are arranged in a U-shaped structure, and the space between the two cantilevers 14 forms an avoidance groove 15 for avoiding the body 23 of the caliper 20 and the friction plate 40 .

[0114] In another way of description, one cantilever 14 of the caliper frame 10, the base 13 and the other cantilever 14 are arranged in a U shape to form an avoidance groove 15, and the avoidance groove 15 is located between the two first sliding pin receiving holes 121 along a direction perpendicular to the arrangement of the two first sliding pin receiving holes 121. The avoidance groove 15 penetrates the caliper frame 10 along an axial direction parallel to the wheel 1001. The avoidance groove 15 is used to avoid the body 23 of the caliper 20 and the first friction plate 41.

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

[0116] For ease of introduction, this application will hereinafter define one of the two cantilevers 14 as a second cantilever 144, and the other cantilever 14 as a first cantilever 143. The first sliding pin receiving hole 121A is located on the first cantilever 143, and the first sliding pin receiving hole 121B is located on the second cantilever 144. Fig.15 In the embodiment shown, the direction of the first rotation direction is defined as the clockwise direction, that is, the direction indicated by the arrow in the figure. Therefore, when the wheel 1001 moves forward, the brake disc 1003 is driven to rotate in the clockwise direction. The second cantilever 144 is used to be arranged in front of the first cantilever 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 143 is L1, and the length of the second cantilever 144 is L2, and L1>L2.

[0117] Since the arrangement direction of the two first sliding pin accommodating holes 121 intersects with the arrangement direction of the two fixing holes 11, the two cantilevers 14 have different length dimensions. Among them, the cantilever 14 with a shorter length dimension has better structural stability. During the braking process of the electronic mechanical brake system 100 provided in the present application, the friction force formed on the front side of the friction plate 40 along the rotation direction of the wheel 1001 when moving forward is greater than that formed on the rear side of the friction plate 40. The second cantilever 144 with a shorter length dimension is arranged on the front side of the first cantilever 143 along the rotation direction of the wheel 1001 when moving forward, which can adapt to the force scenario of the friction plate 40 and improve the braking effect of the electronic mechanical brake system 100 provided in the present 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. Fig.15 In the illustrated embodiment, 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, W1<W2. Based on the difference in stress conditions between 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. Fig.16 As shown, 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 scenario of the friction plate 40, and improve the braking effect.

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

[0121] Please see Fig.17 , Fig.17 It is a schematic exploded view of an electromechanical braking system 100 provided in one embodiment of the present application.

[0122] like Fig.17 As shown, the first friction plate 41 includes two positioning protrusions 43, and the two positioning protrusions 43 are used to be arranged on both sides of the body of the first friction plate 41 along the length direction of the first friction plate 41. The length direction 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 are used to support the first friction plate 41 on the caliper frame 10 and slide relative to the caliper frame 10.

[0123] That is, the caliper frame 10 is used to install the first friction plate 41 through two mounting grooves 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 frame 10 includes a mounting groove 16. Along the arrangement direction of the two first sliding pin receiving holes 121, the notches of the two mounting grooves 16 are arranged opposite to each other. That is, the notch of each mounting groove 16 faces the side of the avoidance groove 15. Or it can be described as that the middle section of the first cantilever 143 is recessed toward the surface of the second cantilever 144 in a direction away from the second cantilever 144 to form a mounting groove 16, and the middle section of the second cantilever 144 is recessed toward the surface of the first cantilever 143 in a direction away from the first cantilever 143 to form another mounting groove 16. Each mounting groove 16 is used to accommodate a positioning protrusion 43 of the first friction plate 41.

[0124] Thus, the caliper frame 10 is able to support the first friction plate 41 in the radial direction of the wheel 1001. Since the two first sliding pin receiving holes 121 are symmetrically arranged along the radial axis of the wheel 1001, the two cantilevers 14 are symmetrically arranged along the radial axis of the wheel 1001. The two positioning protrusions 43 of the first friction plate 41 along its own length direction are respectively extended into the mounting groove 16 of one cantilever 14, so that the first friction plate 41 can be installed on the caliper frame 10 approximately symmetrically along the radial axis of the wheel 1001, thereby improving the braking effect of the first friction plate 41 on the brake disc 1003.

[0125] In one embodiment, along the direction perpendicular to the arrangement of 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 direction perpendicular to the arrangement of 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] It can be understood that by setting a gap between the mounting groove 16 of the caliper frame 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 frame 10 along the arrangement direction perpendicular to the two first sliding pin receiving holes 121, thereby avoiding the first friction plate 41 from sliding relative to the caliper frame 10 during the braking process. Obstruction, thereby ensuring reliable braking of the electronic mechanical brake system 100 provided by the present application. On the other hand, the gap can allow the first friction plate 41 to be displaced along the radial direction of the wheel 1001 when the first friction plate 41 contacts the brake disc 1003, thereby buffering the impact of the brake disc 1003 on the first friction plate 41 to improve the force condition of the first friction plate 41 and extend the service life of the first friction plate 41.

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

[0128] Please see Fig.18 , Fig.18 This is a partially enlarged schematic diagram of an electromechanical braking system provided in one embodiment of the present application. Fig.18 As shown, for the sake of convenience, this application will hereinafter define one groove wall 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, along 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 way of description, each cantilever 14 includes two sections along the arrangement direction perpendicular to the two sliding pin receiving holes 12, and the two sections are defined as a first section 145 and a second section 146. The first section 145 is located on the side of the mounting groove 16 facing the base 13, and the second section 146 is located on the side of the mounting groove 16 facing the first sliding pin receiving hole 121. The first section 145 is located below the positioning protrusion 43 of the first friction plate 41 along the vertical direction, and the second section 146 is located above the positioning protrusion 43 of the first friction plate 41 along the vertical direction. Along the arrangement direction of the two first sliding pin receiving holes 121, the width of the second section 146 is less than or equal to the width of the first section 145.

[0130] It can be understood that, along the arrangement direction of the two first sliding pin accommodating holes 121 , the length of the second groove wall 163 is greater than or equal to the length of the first groove wall 162 , which can ensure that the second groove wall 163 located below the positioning protrusion 43 can reliably support the first friction plate 41 .

[0131] For example, in Fig.15 In the illustrated embodiment, along the length direction of the two first sliding pin receiving holes 121, the length of the first groove wall 162 is smaller than the length of the second groove wall 163, and the width of the first section 145 is larger than the width of the second section 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 form a better supporting effect on the first friction plate 41.

[0132] In one embodiment, the caliper frame 10 includes two support arms 17, two connecting arms 18 and two other mounting grooves 16, each support arm 17 is used to be arranged at intervals along the axial direction of the wheel 1001 on a side of a cantilever 14 away from the brake motor 30, each connecting arm 18 is used to fixedly connect a support arm 17 and a cantilever 14, and each support arm 17 includes one mounting groove 16 of the other two mounting grooves 16. In the axial direction of the wheel 1001, the spacing 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 notches of the other two mounting grooves 16 are opposite, and each of the other two mounting grooves 16 is used to accommodate the positioning protrusion 43 of another friction plate 40.

[0133] Please see Fig.19 and Fig. 20 , Fig.19 It is a schematic diagram of an exploded view of a part of the structure of an electronic mechanical braking system 100 provided in one embodiment of the present application; Fig. 20 It is a schematic diagram of the exploded structure of a part of the electromechanical brake system 100 provided in one embodiment of the present application.

[0134] like Fig.19 and Fig. 20 As shown, along the axial direction of the wheel 1001, the two cantilevers 14 and the two support arms 17 of the caliper frame 10 are respectively located on both sides of the brake disc 1003. The two cantilevers 14 are located on the side of the brake disc 1003 close 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 accommodating holes 121, the two connecting arms 18 are located on the side of the two cantilevers 14 and the two support arms 17 away from the rotation axis of the wheel 1001. Each connecting arm 18 is used to extend along the axial direction of the wheel 1001, and is used to fix a support arm 17 and a cantilever 14. The support arm 17 is also provided with a mounting groove. For the convenience of introduction, this application will later define the mounting groove on the cantilever 14 as the first mounting groove 161, and the mounting groove on the support arm 17 as the second mounting groove 171. That is, each cantilever 14 includes a first mounting groove 161, and the notches of the two first mounting grooves 161 on the two cantilever arms 14 are arranged opposite to each other, and 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 notches of the two second mounting grooves 171 on the two support arms 17 are arranged opposite to each other, and each second mounting groove 171 is used to install a positioning protrusion 43 of the second friction plate 42.

[0135] Thus, the two friction plates 40 can be 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 of the brake disc 1003 under the drive of the caliper 20, thereby ensuring the braking effect of the electronic mechanical brake system 100 provided in the present 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 respectively formed on one connecting arm 18, thereby improving the stress condition of the caliper frame 10 and enhancing the structural stability of the caliper frame 10.

[0137] In one embodiment, the caliper 20 includes two connection holes 25, the two connection holes 25 are used to pass through two connection members 90, and the two connection members 90 are used to fix the brake motor 30. The arrangement direction of the two connection holes 25 intersects with the arrangement direction of the two sliding pin receiving holes 12, and the opening direction of the two connection 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 see Fig.21 and Fig. 22 , Fig.21 It is a schematic diagram of an exploded view of a part of the structure of an electronic mechanical braking system 100 provided in one embodiment of the present application; Fig. 22 It is a schematic diagram of the exploded structure of a part of the electromechanical brake system 100 provided in one embodiment of the present application.

[0139] like Fig.21 and Fig. 22 , the body 23 of the caliper 20 is provided with two connecting holes 25. Along the axial direction of the wheel 1001, the two connecting holes 25 are provided on the side of the body 23 of the caliper 20 facing the brake motor 30. Or 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 accommodating holes 121, that is, intersects with the arrangement direction of the two second sliding pin accommodating holes 22. The electronic mechanical brake system 100 provided in the present application includes two connecting members 90, and the two connecting members 90 are used to extend into the two connecting holes 25, and are used to fix the brake motor 30 and the body 23 of the caliper 20.

[0140] It can be understood that the electronic mechanical brake system 100 provided in the present application is provided with two connection holes 25 on the body 23 of the caliper 20 for fixed connection with the brake motor 30. Based on the fact that the brake motor 30 extends roughly along the arrangement direction of the two second sliding pin receiving holes 22, the present application ensures the connection reliability between the brake motor 30 and the body 23 of the caliper 20 by setting the arrangement direction of the two connection holes 25 to intersect 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 an avoidance hole 26, and along the axial direction of the wheel 1001, the avoidance hole 26 is located on the side of the body 23 of the caliper 20 facing the brake motor 30. The avoidance hole 26 is connected to the accommodating cavity 21 of the caliper 20, and the avoidance hole 26 is used to avoid the transmission member 50. That is, the transmission member 50 passes through the avoidance hole 26 and extends into the accommodating cavity 21 to transmit and connect the brake motor 30 and the first friction plate 41.

[0142] In one embodiment, along the arrangement direction of the two connection holes 25, the two connection holes 25 are arranged on both sides of the avoidance hole 26. Thus, the connection positions of the brake motor 30 and the caliper 20 are arranged on both sides of the transmission member 50, which is conducive to improving the force condition of the brake motor 30 and ensuring that the brake motor 30 reliably drives the transmission member 50.

[0143] In one embodiment, the arrangement direction of the two connection holes 25 is perpendicular to the arrangement direction of the two sliding pin receiving holes 12. That is, it 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, the present application can improve the structural stability of the caliper 20 by setting the arrangement direction of the two connection 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 accommodating holes 12, one sliding pin accommodating hole 12 of the other two sliding pin accommodating holes 12, one connecting hole 25, another connecting hole 25 and another sliding pin accommodating hole 12 of the other two sliding pin accommodating 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 see Fig.23 , Fig.23 Schematic diagram of a partial structure of an electronic mechanical braking system 100 provided in an embodiment of the present application.

[0146] like Fig.23As shown, for the sake of convenience, the present application defines the two connection holes 25 as the first connection hole 251 and the second connection hole 252, and defines the two second sliding pin receiving holes 22 as the second sliding pin receiving hole 22A and the second sliding pin receiving hole 22B. 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. In the radial direction of the wheel 1001, the first connection hole 251 is arranged between the rotation axis of the wheel 1001 and the second connection hole 252. Along the arrangement direction of the two first sliding pin receiving holes 121, the second sliding pin receiving hole 22A, the first connection hole 251, the second connection hole 252 and the second sliding pin receiving hole 22A are arranged in sequence.

[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 251 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, so as to better adapt to the wheel side space of the vehicle 1000.

[0148] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of protection of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An electromechanical braking system, characterized in that: The electronic mechanical brake system includes a caliper frame, a caliper and a brake motor, the caliper frame includes two fixing holes and two sliding pin receiving holes, the two fixing holes are used to pass through two fixing members, the two fixing members are used to fix the vehicle frame and the caliper frame, the two sliding pin receiving holes are used to fix two sliding pins, the caliper is used to be sleeved on the two sliding pins and to fix the brake motor, the brake motor is used to drive at least one friction plate to slide along the axial direction of the two sliding pins, wherein: The two sliding pin receiving holes are used to be arranged symmetrically along the radial axis of the wheel; An arrangement direction of the two fixing holes intersects with an arrangement direction of the two sliding pin receiving holes.

2. The electromechanical brake system according to claim 1, characterized in that: The two fixing holes are used to be arranged symmetrically along the radial axis of the wheel. Along an arrangement direction perpendicular to the two sliding pin accommodating holes, one of the two fixing holes is arranged between the other fixing hole and the two sliding pin accommodating holes.

3. The electromechanical brake system according to claim 2, characterized in that: Along the arrangement direction of the two sliding pin accommodating holes, one of the two sliding pin accommodating holes, the one fixing hole, the other of the two sliding pin accommodating holes, and the other fixing hole are arranged in sequence.

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

5. The electromechanical brake system according to any one of claims 1 to 4, characterized in that: The caliper frame includes a base and two cantilevers, the two fixing holes are located at the base, and each cantilever includes two opposite ends along an arrangement direction perpendicular to the two sliding pin accommodating holes, one end is used to be fixedly connected to the base, and the other end includes one of the sliding pin accommodating holes.

6. The electromechanical brake system according to claim 5, characterized in that: The length of one cantilever along the arrangement direction perpendicular to the two sliding pin accommodating holes is smaller than the length of the other cantilever, and the one cantilever is used to be arranged in front of the other cantilever along the first rotation direction of the wheel, and the first rotation direction is the rotation direction when the wheel moves forward.

7. The electromechanical brake system according to claim 6, characterized in that: The width of the one cantilever along the arrangement direction of the two sliding pin receiving holes is greater than the width of the other cantilever; or, The width of the one cantilever along the axial direction of the wheel is greater than the width of the other cantilever.

8. The electromechanical brake system according to any one of claims 5 to 7, characterized in that: The middle section of each cantilever comprises a mounting groove, and the notches of the two mounting grooves are opposite to each other along the arrangement direction of the two sliding pin accommodating holes, and each mounting groove is used to accommodate a positioning protrusion of the friction plate.

9. The electromechanical brake system according to claim 8, characterized in that: Along a direction perpendicular to the arrangement direction of the two sliding pin accommodating holes, a width of each of the mounting grooves is greater than a width of the positioning protrusion.

10. The electromechanical brake system according to claim 8 or 9, characterized in that: Along a direction perpendicular to the arrangement of the two sliding pin accommodating holes, each of the mounting grooves includes two opposite groove walls, one of which is arranged between the other groove wall and the one sliding pin accommodating hole, and the length of the one groove wall along the arrangement direction of the two sliding pin accommodating holes is less than or equal to the length of the other groove wall.

11. The electromechanical brake system according to any one of claims 8 to 10, characterized in that: The one caliper frame comprises two support arms, two connecting arms and two other mounting grooves, each of the support arms is used to be arranged at intervals along the axial direction of the wheel on a side of one of the cantilever arms away from the one brake motor, each of the connecting arms is used to fixedly connect one of the support arms and one of the cantilever arms, and each of the support arms comprises one of the other two mounting grooves, 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 brake disc of the wheel; The notches of the other two mounting grooves are opposite to each other along the arrangement direction of the two sliding pin accommodating holes, and each of the other two mounting grooves is used to accommodate a positioning protrusion of another friction plate.

12. The electromechanical brake system according to any one of claims 1 to 11, characterized in that: The one caliper includes two other sliding pin accommodating holes, the arrangement direction of the other two sliding pin accommodating holes is parallel to the arrangement direction of the two sliding pin accommodating holes, the openings of the other two sliding pin accommodating holes are axially toward the one caliper frame, and each of the other two sliding pin accommodating holes is used to sleeve one of the sliding pins.

13. The electromechanical brake system according to claim 12, characterized in that: The one caliper comprises two connection holes, the two connection holes are used to pass through two connection pieces, the two connection pieces are used to fixedly connect the one brake motor, wherein: The arrangement direction of the two connecting holes intersects with the arrangement direction of the two sliding pin accommodating holes, and the opening direction of the two connecting holes along the axial direction of the wheel is opposite to the opening direction of the other two sliding pin accommodating holes.

14. The electromechanical brake system according to claim 13, characterized in that: Along the arrangement direction of the two sliding pin accommodating holes, one of the other two sliding pin accommodating holes, one of the connecting holes, the other connecting hole and the other of the other two sliding pin accommodating holes are arranged in sequence, and along the radial direction of the wheel, the one connecting hole is arranged between the rotation axis of the wheel and the other connecting hole.

15. A vehicle, characterized in that: The vehicle comprises a frame, wheels and an electronic mechanical braking system as described in any one of claims 1-14, wherein a caliper frame in the electronic mechanical braking system is used for fixedly connecting the frame, and at least one friction plate in the electronic mechanical braking system is used for braking the brake disc of the wheel.

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