Electronic mechanical braking device and vehicle

Abstract

The utility model provides an electro-mechanical brake device and a vehicle. The electronic mechanical braking device comprises calipers and a speed reducer which are fixedly connected, the calipers are used for containing a lead screw nut, a sensor and a friction plate, a shell of the speed reducer is used for containing a gear set and a fixed connector, the gear set is used for driving the lead screw nut to push the friction plate to brake a brake disc, and the sensor is used for detecting braking force. The connector is electrically connected with the circuit board; the sensor and the connector are adjacently arranged, the sensor and the connector comprise two opposite positioning surfaces, one positioning surface is used for fixing a conducting strip, the other positioning surface is used for installing a contact pin, the contact pin abuts against the conducting strip, and the distance between the two positioning surfaces is smaller than the sum of the natural length of the contact pin and the natural length of the conducting strip. According to the electronic mechanical braking device, reliable conduction of the sensor and the connector is guaranteed through the elastic conducting strip and / or the contact pin.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to an electromechanical braking device and a vehicle. Background Technology

[0002] The vehicle's electro-mechanical brake (EMB) uses a motor and a mechanical feed mechanism to drive the brake. During braking, the driving force output by the motor may not match the braking force applied to the vehicle, thus affecting the braking effect. Utility Model Content

[0003] This application provides an electromechanical braking device and a vehicle, which ensures reliable conduction between a sensor and a connector through a flexible conductive sheet and / or pins.

[0004] In a first aspect, this application provides an electromechanical braking device, which includes a caliper and a reducer fixedly connected. The caliper is used to accommodate a lead screw nut, a sensor, and a friction plate. The housing of the reducer is used to accommodate a gear set and to fix a connector. The gear set is used to drive the lead screw nut to push the friction plate to brake the brake disc. The sensor is used to detect the braking force of the friction plate. The connector is used to electrically connect a circuit board.

[0005] Along the arrangement direction of the caliper and reducer, the sensor and connector are arranged adjacent to each other. The housing of the sensor and the housing of the connector include two opposing positioning surfaces. One of the positioning surfaces is used to fix the conductive sheet, and the other positioning surface is used to install the pin. The pin abuts against the conductive sheet and conducts electricity. The distance between the two positioning surfaces is less than the sum of the natural length of the pin and the natural length of the conductive sheet.

[0006] The electromechanical braking device provided in this application uses a lead screw nut at both ends to drive the gear set of the reducer and the friction pad, respectively. A circuit board is used for communication with the brake motor and drives the brake motor based on external braking commands. The brake motor, through the gear set, drives the lead screw nut to push the friction pad relative to the caliper, causing the friction pad to move towards the brake disc to brake it. During the operation of this electromechanical braking device, a sensor is used to detect the braking force on the friction pad, and a connector is used to transmit the sensor's detection signal to the circuit board. The circuit board controls the braking force output by the brake motor based on the sensor's detection signal. This ensures reliable braking of the electromechanical braking device.

[0007] The electromechanical braking device provided in this application further achieves an electrical connection between the sensor and the connector by mounting conductive plates and pins on two opposing positioning surfaces of the sensor and connector, with the pins and conductive plates abutting against each other. The distance between the two positioning surfaces is less than the sum of the natural lengths of the pins and conductive plates, ensuring that at least one of the conductive plates and pins is elastic, thereby guaranteeing the abutment between the pins and conductive plates during the operation of the electromechanical braking device. This ensures reliable conductivity between the sensor and the connector.

[0008] In one implementation, the pin includes a spring and a guide rod. Along the arrangement direction of the caliper and the reducer, one end of the spring is used to hold the guide rod, and the other end of the spring is used to hold the housing of the sensor or the housing of the connector. When the pin abuts against the conductive plate, the length of the spring is less than the natural length of the spring.

[0009] In this implementation, along the arrangement direction of the caliper and the reducer, one end of the guide rod is elastically connected to the sensor housing or connector housing via a spring, and the other end of the guide rod is used to abut against the conductive plate for conduction, or to be fixedly connected or abut against another positioning surface. When the pin abuts against the conductive plate, the spring is in a pre-compressed state. During the operation of the electromechanical braking device of this application, the spring's own elasticity is used to ensure reliable conduction between the pin and the conductive plate.

[0010] In one implementation, when the pin abuts against the conductive sheet, the difference between the length of the spring and the spring's natural length is less than the spring's maximum compression.

[0011] In this implementation, when the pin abuts against the conductive plate, the spring is in a pre-compressed state, and the pre-compression amount of the spring is less than the maximum compression amount of the spring. During the operation of the electromechanical braking device of this application, when external vibration causes relative displacement between the sensor and the connector along the arrangement direction of the caliper and the reducer, the spring ensures reliable conduction between the pin and the conductive plate based on its own elasticity.

[0012] In one implementation, the pin further includes a sleeve fixed to another positioning surface and used to house at least a portion of the spring and at least a portion of the guide rod.

[0013] In this implementation, the geometric axis of the sleeve is parallel to the arrangement direction of the caliper and the reducer. The sleeve guides the spring to extend and retract along the arrangement direction of the caliper and the reducer, thereby preventing external vibrations from causing deformation of the spring in a direction perpendicular to the arrangement direction of the caliper and the reducer during the operation of the electromechanical braking device of this application. This ensures reliable extension and retraction of the spring.

[0014] In one implementation, another positioning surface includes a groove for receiving at least a portion of the spring and at least a portion of the guide rod.

[0015] In this implementation, the extension axis of the groove is parallel to the arrangement direction of the caliper and the reducer. The groove guides the spring to extend and retract along the arrangement direction of the caliper and the reducer. During the operation of the electromechanical braking device of this application, the groove prevents external vibration from causing the spring to deform in a direction perpendicular to the arrangement direction of the caliper and the reducer. This ensures reliable extension and retraction of the spring.

[0016] In one implementation, the guide rod is used to embed into another positioning surface along the arrangement direction of the caliper and the reducer and extends into the housing of the sensor or into the housing of the connector.

[0017] In this implementation, the conductive sheet is connected to the circuit board inside the sensor housing or the connector housing, and the pin is connected to the circuit board inside the connector housing or the sensor housing via the guide rod. The pin abuts against the conductive sheet to achieve conductivity between the connector and the sensor.

[0018] In one implementation, both the sleeve and the guide rod are made of metal. Along the arrangement direction perpendicular to the caliper and the reducer, the inner wall of the sleeve is used to abut against the outer wall of the guide rod. The sleeve is used to embed into another positioning surface and extend into the housing of the sensor or into the housing of the connector.

[0019] In this implementation, along the arrangement direction of the caliper and reducer, the sleeve is used to conduct electricity with the wiring inside the sensor housing or connector housing, and the guide rod conducts electricity with the wiring inside the connector housing or sensor housing via a conductive plate. The sleeve and guide rod abut against each other along a direction perpendicular to the arrangement direction of the caliper and reducer, thereby achieving conductivity between the connector and the sensor.

[0020] In one implementation, along the arrangement direction of the caliper and the reducer, the pin includes a first segment and a second segment connected together. The first segment is used to embed into another positioning surface and extends into the housing of the sensor or into the housing of the connector. The second segment is located between the two positioning surfaces. When the pin abuts against the conductive sheet, the length dimension of the second segment is less than the natural length of the second segment.

[0021] In this implementation, along the arrangement direction of the caliper and reducer, one end of the pin is used to embed into another positioning surface and conduct electricity with the wiring inside the sensor housing or connector housing, while the other end of the pin is used to abut against the conductive plate for conduction. This achieves an electrical connection between the connector and the sensor. The section of the pin located between the two positioning surfaces is elastic to ensure reliable conduction with the conductive plate.

[0022] In one implementation, along the arrangement direction of the caliper and the reducer, the pin also includes a third segment, which is connected to the first segment via the second segment.

[0023] In this implementation, along the arrangement direction of the caliper and the reducer, the two opposite ends of the pin are used for the wiring inside the connector housing and the wiring inside the sensor housing. The middle section of the pin is elastic to ensure reliable connection between the sensor and the connector during the operation of the electromechanical braking device of this application.

[0024] One implementation method is that the elastic coefficients of the first and third segments are less than or equal to the elastic coefficient of the second segment.

[0025] In this implementation, the elastic coefficients of the first and third segments are smaller than those of the second segment, so as to ensure reliable conduction between the pin and the conductive sheet during the operation of the electromechanical braking device of this application, and to ensure reliable conduction between the pin and the circuit board inside the sensor housing or the connector housing.

[0026] In one implementation, the conductive sheet includes a bent section that bends toward another positioning surface along the arrangement direction of the caliper and the reducer, and the bent section deforms toward one positioning surface when the pin abuts against the conductive sheet.

[0027] In this implementation, along the arrangement direction of the caliper's reducer, the bent section is located between the pin and a positioning surface, and the pin achieves an elastic connection with a positioning surface through the bent section. Therefore, during the operation of the electromechanical braking device of this application, the elasticity of the bent section itself ensures reliable conductivity between the conductive sheet and the pin.

[0028] In one implementation, along the arrangement direction of the caliper and the reducer, a positioning surface is provided with a protrusion, the protrusion including a guide hole for exposing a conductive sheet and accommodating a portion of the pin.

[0029] In this implementation, the guide hole is used to guide the pins to extend into and abut against the conductive sheet for conduction. Along the arrangement direction perpendicular to the caliper and reducer, the guide hole is also used to define the relative position of the pins.

[0030] In one implementation, the diameter of the outer circumferential surface of the pin housed in the guide hole is smaller than the diameter of the guide hole, along the arrangement direction perpendicular to the caliper and the reducer.

[0031] In this implementation, a gap is left between the outer peripheral surface of the pin and the wall of the guide hole along the arrangement direction perpendicular to the caliper and the reducer, so that the pin can be displaced toward the wall of the guide hole under external vibration during the operation of the electromechanical braking device of this application, thereby ensuring reliable conduction between the pin and the conductive sheet.

[0032] In one implementation, along the arrangement direction of the caliper and the reducer, the outer peripheral surface of the pin includes two connected segments, one of which is connected to another positioning surface through the other segment; wherein the diameter of one segment is smaller than the diameter of the other segment.

[0033] In this implementation, the diameter of the outer peripheral surface of the pin connected to another positioning surface is larger than the diameter of the outer peripheral surface of the first segment, so as to improve the connection strength between the pin and the other positioning surface, thereby improving the connection stability of the pin.

[0034] In one implementation, along the arrangement direction of the caliper and the reducer, the protrusion includes a first surface facing another positioning surface, the first surface and the other positioning surface being used to fix a sealing ring, the sealing ring being used to surround the pin and to abut against the first surface and the other positioning surface.

[0035] In this implementation, a sealing ring is held between the protrusion and another positioning surface along the arrangement direction of the caliper and the reducer. The sealing ring is used to surround the pin and cooperate with the protrusion and the other positioning surface to seal the pin, so as to prevent external impurities from contacting the pin and the conductive plate during the operation of the electromechanical braking device of this application, and ensure reliable conduction between the pin and the conductive plate.

[0036] In one implementation, along the arrangement direction of the caliper and the reducer, one of the first surface and the other positioning surface includes an annular groove, one end of a sealing ring is used to abut the bottom of the annular groove, and the other end of the sealing ring is used to abut the other of the first surface and the other positioning surface.

[0037] In this implementation, along the arrangement direction of the caliper and the reducer, the annular groove is used to accommodate part of the sealing ring. The annular groove is also used to increase the installation space between the first surface and another positioning surface, which facilitates the installation and fixing of the sealing ring.

[0038] In one implementation, an annular groove is provided on the first surface along the arrangement direction perpendicular to the caliper and the reducer. The two ends of the sealing ring are respectively provided with elastic connecting parts. Along the arrangement direction of the caliper and the reducer, the two elastic connecting parts extend away from the other positioning surface along the outer peripheral surface of the connector housing or sensor housing corresponding to the first surface, and are connected as one unit on the side of the connector housing or sensor housing corresponding to the first surface away from the other positioning surface.

[0039] In this implementation, the sealing ring is bound to the housing of the connector or the housing of the sensor corresponding to the first surface through two elastic connecting parts, thereby ensuring the reliable fixation of the sealing ring.

[0040] In one implementation, along a direction perpendicular to the arrangement of the caliper and the reducer, the sealing ring includes an inner ring and an outer ring, with the outer circumferential surface of the inner ring spaced apart from the inner circumferential surface of the outer ring and connected by a positioning part.

[0041] In this implementation, the sealing ring abuts against the first surface and another positioning surface through the inner and outer rings to ensure a reliable seal between the sealing ring and the pin.

[0042] In one implementation, along the arrangement direction of the caliper and the reducer, the two surfaces in contact with each other, such as the pin and the conductive sheet, each include a metal layer.

[0043] In this implementation, the two surfaces in contact with each other, the pin and the conductive sheet, are connected by a metal layer to reduce the resistance between the pin and the conductive sheet, thus ensuring reliable conduction between the pin and the conductive sheet.

[0044] In one implementation, the thickness of the metal layer of the pin is less than or equal to the thickness of the metal layer of the conductive sheet.

[0045] In this implementation, during the operation of the electromechanical braking device of this application, when the pin is elastic, it can reduce the wear of its metal layer caused by external vibrations. The presence of a thicker metal layer on the conductive sheet improves its wear resistance, thereby ensuring reliable conductivity between the pin and the conductive sheet. Furthermore, the thicker metal layer also prevents metal layer breakage during elastic deformation, further ensuring reliable conductivity between the pin and the conductive sheet.

[0046] In one implementation, the caliper, gear set, and circuit board are arranged sequentially at intervals along the arrangement direction of the caliper and reducer, with the plane direction of the circuit board perpendicular to the arrangement direction of the caliper and reducer.

[0047] In this implementation, the thickness direction of the circuit board is parallel to the arrangement direction of the caliper and the reducer, so as to reduce the space occupied by the circuit board along the arrangement direction of the caliper and the reducer, which facilitates the miniaturization of the electromechanical braking device of this application.

[0048] In one implementation, along the arrangement direction of the caliper and the reducer, the projection of the connector on the circuit board is spaced apart from the projection of the gear set on the circuit board. One end of the connector is electrically connected to the sensor through a conductive sheet or pin, and the other end of the connector extends toward the circuit board along the arrangement direction parallel to the caliper and the reducer and is connected to the circuit board.

[0049] In this implementation, one end of the connector is fixed between the housing of the caliper and the reducer for easy electrical connection with the sensor, while the other end of the connector extends into the housing of the reducer along the alignment direction of the caliper and the reducer to communicate with the circuit board. The other end of the connector is housed within the housing of the reducer to minimize the influence of external impurities on the connector and ensure reliable communication between the sensor and the circuit board.

[0050] In one implementation, along the arrangement direction of the caliper and the reducer, the projection of the connector on the circuit board coincides with the projection of the gear set on the circuit board. One end of the connector is electrically connected to the sensor through a conductive sheet or pin; the other end of the connector extends into the housing of the reducer and extends toward the circuit board.

[0051] In this implementation, the opposite ends of the connector are aligned and extend towards each other along the arrangement direction of the caliper and the reducer to form a single unit. Alternatively, the opposite ends of the connector are connected by flexible wiring. The connector portion is housed within the reducer housing to reduce the impact of external impurities on the connector and ensure reliable communication between the sensor and the circuit board.

[0052] In one implementation, along the arrangement direction of the caliper and the reducer, the projection of the connector on the circuit board coincides with the projection of the gear set on the circuit board. One end of the connector is electrically connected to the sensor through a conductive sheet or pin. The other end of the connector extends out of the housing of the caliper and the reducer and is connected to the circuit board through a line outside the housing of the reducer.

[0053] In this implementation, along the arrangement direction of the caliper and the reducer, the two ends of the connector are connected through the wiring outside the housing of the reducer, so as to reduce the space occupied by the connector inside the housing of the reducer and facilitate the miniaturization of the electromechanical braking device of this application.

[0054] Secondly, embodiments of this application provide a vehicle, including: a plurality of wheels; and a plurality of electromechanical braking devices provided in the first aspect above, each of the electromechanical braking devices being used to brake one wheel.

[0055] The vehicle in this application includes an electromechanical braking device provided by any of the above implementations, which utilizes flexible pins and / or conductive sheets to ensure reliable conduction between the sensor and the connector. Attached Figure Description

[0056] 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.

[0057] Figure 1 This is a schematic diagram of a partial external structure of a vehicle wheel provided in an embodiment of this application;

[0058] Figure 2 This is a schematic diagram of a partial cross-sectional structure of a vehicle wheel provided in an embodiment of this application;

[0059] Figure 3 This is a cross-sectional structural schematic diagram of the electromechanical braking device provided in the embodiments of this application;

[0060] Figure 4 Another cross-sectional structural schematic diagram of the electromechanical braking device provided in the embodiment of this application;

[0061] Figure 5 A schematic cross-sectional view of the electromechanical braking device provided in the embodiment of this application at the caliper;

[0062] Figure 6 A cross-sectional structural diagram of the electromechanical braking device provided in the embodiment of this application at the reducer;

[0063] Figure 7 This is a partial external structural diagram of the electromechanical braking device provided in the embodiments of this application;

[0064] Figure 8 This is an exploded view of the electromechanical braking device provided in the embodiments of this application;

[0065] Figure 9 This is a partial cross-sectional structural schematic diagram of the electromechanical braking device provided in the embodiments of this application;

[0066] Figure 10 This is a partially enlarged structural schematic diagram of the electromechanical braking device provided in the embodiments of this application;

[0067] Figure 11 A cross-sectional structural schematic diagram of the internal components of the caliper in the electromechanical braking device provided in the embodiments of this application;

[0068] Figure 12 A schematic diagram of the mounting structure of the connector and sensor in one embodiment of the electromechanical braking device provided in this application;

[0069] Figure 13 A schematic diagram of the connector and sensor mounting structure in another embodiment of the electromechanical braking device provided in this application;

[0070] Figure 14 A cross-sectional structural schematic diagram of the connection between the caliper and the reducer in one embodiment of the electromechanical braking device provided in this application;

[0071] Figure 15 A cross-sectional structural schematic diagram of the connection between the caliper and the reducer in another embodiment of the electromechanical braking device provided in this application;

[0072] Figure 16 Another cross-sectional structural schematic diagram of the connection between the caliper and the reducer in one embodiment of the electromechanical braking device provided in this application;

[0073] Figure 17 Another cross-sectional structural schematic diagram of the connection between the caliper and the reducer in another embodiment of the electromechanical braking device provided in this application;

[0074] Figure 18 Another cross-sectional structural schematic diagram of the caliper and the removed connection in one embodiment of the electromechanical braking device provided in this application;

[0075] Figure 19 Another cross-sectional structural schematic diagram of the connection between the caliper and the reducer in another embodiment of the electromechanical braking device provided in this application;

[0076] Figure 20 A cross-sectional view of the connection between the caliper and the reducer in one embodiment of the electromechanical braking device provided in this application.

[0077] Figure 21 Another cross-sectional structural schematic diagram of the connection between the caliper and the reducer in another embodiment of the electromechanical braking device provided in this application;

[0078] Figure 22 A schematic diagram of the connection between the caliper and the reducer of the electromechanical braking device provided in the embodiment of this application;

[0079] Figure 23 Another structural schematic diagram of the electromechanical braking device provided in the embodiment of this application at the connection between the caliper and the reducer;

[0080] Figure 24 This is another structural schematic diagram of the electromechanical braking device provided in the embodiment of this application at the connection between the caliper and the reducer;

[0081] Figure 25 This is another structural schematic diagram of the electromechanical braking device provided in the embodiment of this application at the connection between the caliper and the reducer;

[0082] Figure 26 This is a cross-sectional structural diagram of the electromechanical braking device provided in the embodiment of this application at the connection between the caliper and the reducer;

[0083] Figure 27 Another cross-sectional structural diagram of the electromechanical braking device provided in the embodiment of this application at the connection between the caliper and the reducer;

[0084] Figure 28 This is another cross-sectional structural schematic diagram of the connection between the caliper and the reducer of the electromechanical braking device provided in the embodiment of this application;

[0085] Figure 29 A schematic diagram of the external structure of the connector of the electromechanical braking device provided in the embodiments of this application;

[0086] Figure 30A partial external structural diagram of the connector of the electromechanical braking device provided in the embodiments of this application;

[0087] Figure 31 Another partial external structural diagram of the connector of the electromechanical braking device provided in the embodiment of this application;

[0088] Figure 32 A schematic cross-sectional view of the electromechanical braking device provided in the embodiment of this application at the connector;

[0089] Figure 33 This is a schematic diagram of the structure of the sealing ring of the electromechanical braking device provided in the embodiments of this application;

[0090] Figure 34 This is a schematic diagram of the external structure of the electromechanical braking device provided in the embodiments of this application on the sensor side;

[0091] Figure 35 A schematic diagram of the external structure of the connection between the sensor and the connector of the electromechanical braking device provided in the embodiment of this application;

[0092] Figure 36 A schematic planar structure of the connection between the sensor and the connector of the electromechanical braking device provided in the embodiment of this application;

[0093] Figure 37 A cross-sectional structural schematic diagram of the connection between the sensor and the connector of the electromechanical braking device provided in the embodiment of this application;

[0094] Figure 38 This is an enlarged cross-sectional view of the connection between the sensor and the connector of the electromechanical braking device provided in the embodiment of this application.

[0095] Figure 39 Another enlarged cross-sectional view of the connection between the sensor and the connector of the electromechanical braking device provided in the embodiment of this application;

[0096] Figure 40 This is a schematic cross-sectional view of the contact point between the pin and the conductive sheet in the electromechanical braking device provided in the embodiments of this application.

[0097] Figure 41 This is a partial cross-sectional view of the electromechanical braking device provided in the embodiment of this application on one side of the reducer.

[0098] Figure 42 This is a partial cross-sectional view of the electromechanical braking device provided in the embodiment of this application on one side of the reducer.

[0099] Figure 43A schematic diagram of the external structure of the electromechanical braking device provided in the embodiments of this application on one side of the reducer;

[0100] Figure 44 This is an enlarged structural diagram of the electromechanical braking device provided in the embodiments of this application on one side of the reducer;

[0101] Figure 45 This is another cross-sectional structural schematic diagram of the connection between the caliper and the reducer of the electromechanical braking device provided in the embodiment of this application;

[0102] Figure 46 A schematic diagram of the external structure of the electromechanical braking device provided in the embodiments of this application on the caliper side;

[0103] Figure 47 Another schematic diagram of the external structure of the electromechanical braking device provided in the embodiment of this application on one side of the reducer;

[0104] Figure 48 A schematic diagram of the conductive portion of the first connection end of the electromechanical braking device provided in the embodiment of this application;

[0105] Figure 49 A schematic diagram of the structure of the extension of the first connecting end of the electromechanical braking device provided in the embodiment of this application;

[0106] Figure 50 This is a schematic diagram of the structure of the conductive sheet of the electromechanical braking device provided in the embodiment of this application. Detailed Implementation

[0107] The technical solutions of the embodiments of this application will now be described 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. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0108] The vehicle provided in this application may include multiple electromechanical braking devices, each corresponding to a specific wheel. The vehicle also includes a brake pedal for controlling the multiple electromechanical braking devices to displace the friction pads toward or away from the brake disc of the wheel.

[0109] Please see Figure 1 The diagram shown is a partial external structural diagram of the wheel of a vehicle provided in an embodiment of this application.

[0110] like Figure 1As shown, wheel 1001 is equipped with brake disc 1002, which is coaxially fixed to the wheel hub of wheel 1001. When wheel 1001 rotates relative to the frame, brake disc 1002 rotates synchronously with wheel 1001 relative to the frame. Figure 1 In the illustration, the outer diameter of the brake disc 1002 is smaller than the inner diameter of the inner rim of the wheel, and the brake disc 1002 is housed within the inner rim of the wheel 1001.

[0111] The electromechanical braking device 100 provided in this application is fixed to the vehicle frame. The electromechanical braking device 100 extends at least partially into the inner rim of the wheel 1001 and cooperates with the brake disc 1002 to brake the wheel 1001.

[0112] Please see Figure 2 The diagram shown is a partial cross-sectional view of a vehicle wheel provided in an embodiment of this application.

[0113] like Figure 2 As shown, the electromechanical braking device 100 provided in this application includes a caliper bracket 11, a caliper 12, a friction plate 21, a lead screw nut 31, and a brake motor 40 (see [link to application]). Figure 4 For details regarding the connection relationship between the lead screw nut 31, the brake motor 40, and the caliper 12, please refer to [reference needed]. Figure 3 As shown. The caliper bracket 11 is used to fix the vehicle frame, the caliper 12 is slidably connected to the caliper bracket 11, and the brake motor 40 is fixedly connected to the caliper 12 and slides synchronously with the caliper 12 relative to the caliper bracket 11. In some embodiments, the caliper 12 and the caliper bracket 11 are slidably connected by a through hole and a sliding rod. That is, the caliper 12 has one of the through hole and the sliding rod, and the caliper bracket 11 has the other of the through hole and the sliding rod. The relative sliding between the caliper 12 and the caliper bracket 11 is achieved by the axial sliding of the sliding rod in the through hole.

[0114] In this embodiment, the sliding direction of the caliper 12 relative to the caliper bracket 11 is parallel to the axial direction of the brake disc 1002, and the brake motor 40 is used to slide along the axial direction of the wheel 1001 to connect to the frame. Corresponding to the above-described embodiment of the through hole and slide bar, the axial direction of the through hole and the axis of the slide bar are both parallel to the axial direction of the brake disc 1002.

[0115] The caliper 12 is used to mount the friction plate 21, securely connect a brake motor 40, and accommodate a lead screw nut 31. Among these, in... Figure 2 In the schematic diagram, there are two friction pads 21, which are arranged on both sides of the brake disc 1002 along the axial direction of the brake disc 1002. The two friction pads 21 face the two opposite outer surfaces of the brake disc 1002.

[0116] like Figure 2As shown, in the electromechanical braking device 100, the brake motor 40 drives two friction pads 21 to slide along the axial direction of the wheel 1001 to abut against the brake disc 1002. In this embodiment, the brake motor 40 drives the friction pads 21 toward or away from the brake disc 1002 of the vehicle. The brake motor 40 drives the lead screw nut 31 to rotate relative to the caliper bracket 11, pushing the two friction pads 21 to slide toward each other and contact the two outer surfaces opposite to the brake disc 1002, thereby generating friction to brake the brake disc 1002.

[0117] For ease of description, along the axial direction of the brake disc 1002, this application defines the friction plate 21 closer to the lead screw nut 31 as the first friction plate 211, and the friction plate 21 farther from the lead screw nut 31 as the second friction plate 212.

[0118] Please see Figure 3 and Figure 4 ,in Figure 3 This is a cross-sectional structural schematic diagram of the electromechanical braking device 100 provided in the embodiments of this application. Figure 4 Another cross-sectional structural schematic diagram of the electromechanical braking device 100 provided in the embodiments of this application.

[0119] like Figure 3 and Figure 4 As shown, the electromechanical braking device 100 of this application further includes a caliper 12, a lead screw nut 31, and a brake motor 40. The axis of the lead screw nut 31 is parallel to the axis of the brake disc 1002. In one embodiment, the electromechanical braking device 100 of this application further includes a reducer 50, which is used to drively connect the brake motor 40 and the lead screw nut 31. The reducer 50 is used to adjust the speed and torque of the driving force output by the brake motor 40 and transmit the adjusted driving force to the lead screw nut 31. The caliper 12 is used to fixably connect to the reducer 50 and to accommodate the lead screw nut 31. The brake motor 40 is fixedly connected to the caliper 12 through the reducer 50. Along the axial direction of the lead screw nut 31, the caliper 12 is closer to the wheel 1001 than the reducer 50.

[0120] The lead screw nut 31 is used to drive the reducer 50 and to drive the two friction plates 21. Specifically, the two friction plates 21 are used to slide and connect the caliper frame 11, the lead screw nut 31 is used to drive the first friction plate 211 to slide relative to the caliper frame 11, and the second friction plate 212 is used to fixally or slide and connect the caliper 12. That is, along the axial direction of the lead screw nut 31, the second friction plate 212, the first friction plate 211, the lead screw nut 31, and the reducer 50 are arranged in sequence.

[0121] In this embodiment, the reducer 50 includes a housing 51, which is fixedly connected to the caliper 12. The reducer 50 and the caliper 12 are arranged parallel to the axial direction of the lead screw nut 31. The housing 51 of the reducer 50 is used to house the circuit board 60 and the gear set 52, and is also used to be fixedly connected to the brake motor 40. Figure 4 In the illustration, along the arrangement direction of the reducer 50 and the caliper 12, the brake motor 40 is fixed to the side of the reducer 50 housing 51 facing the caliper 12 and is spaced apart from the friction plate 21. Along the arrangement direction perpendicular to the reducer 50 and the caliper 12, the brake motor 40 and the lead screw nut 31 inside the caliper 12 are arranged at intervals.

[0122] That is, along the arrangement direction of the reducer 50 and the caliper 12, the brake motor 40 and the caliper 12 are fixed on the same side of the housing of the reducer 50, so as to make the internal mechanism of the electromechanical braking device 100 more compact, reduce the overall volume, and facilitate the miniaturization of the electromechanical braking device 100 of this application.

[0123] The caliper 12 is used to house the lead screw nut 31. The caliper 12 also drives the housing 51 of the reducer 50 and allows it to slide axially relative to the caliper bracket 11 along the brake disc 1002. The reducer 50 is used to drive the lead screw nut 31 and the brake motor 40. The motor shaft of the brake motor 40 extends into the housing 51 of the reducer 50 and is drively connected to the gear set 52 of the reducer 50. That is, the brake motor 40 drives the gear set 52 of the reducer 50 to rotate, thereby pushing the friction plate 21 and driving the caliper 12.

[0124] Please refer to the above. Figure 5 and Figure 6 , Figure 5 This is a cross-sectional view of the electromechanical braking device 100 provided in this embodiment of the application at the caliper 12. Figure 6 This is a cross-sectional structural diagram of the electromechanical braking device 100 provided in the embodiment of this application at the reducer 50.

[0125] like Figure 5 and Figure 6 As shown, the caliper 12 is generally U-shaped and includes a main body 121, a pushing part 122, and a connecting part 123. The main body 121 and the pushing part 122 are positioned on both sides of the brake disc 1002 along its axial direction. The main body 121 and the pushing part 122 are also positioned on both sides of the two friction pads 21 along the axial direction of the brake disc 1002. The connecting part 123 is located radially on the outer side of the brake disc 1002 and is used to securely connect the main body 121 and the pushing part 122.

[0126] In one embodiment, a first friction plate 211 is mounted on the surface of the main body 121 facing the pushing part 122. The electromechanical braking device 100 of this application further includes a piston 32 along the axial direction of the brake disc 1002, located on the side of the first friction plate 211 away from the brake disc 1002, and the piston 32 is used to abut against the first friction plate 211. A second friction plate 212 is mounted on the surface of the pushing part 122 facing the main body 121.

[0127] In one embodiment, the first friction plate 211 is slidably connected to the main body 121. In another embodiment, the second friction plate 212 is fixedly connected to the pushing part 122.

[0128] The main body 121 is also used for sliding connection of the caliper bracket 11. The lead screw nut 31 is received in the receiving groove 124 of the main body 121. The housing 51 of the reducer 50 is fixed to the side of the main body 121 away from the pusher 122. Along the axial direction of the brake disc 1002, one end of the lead screw nut 31 is used for driving the gear set 52 of the reducer 50, and the other end of the lead screw nut 31 is used for driving a piston 32.

[0129] Specifically, the main body 121 and the housing 51 of the reducer 50 are respectively provided with through holes. In one embodiment, the reducer 50 also includes an output shaft 53. Along the arrangement direction of the caliper 12 and the reducer 50, one end of the output shaft 53 is connected to the gear set 52 for transmission, and the other end of the output shaft 53 passes through two through holes in sequence and is coaxially fixed with the lead screw nut 31.

[0130] In some other embodiments, the lead screw nut 31 is partially housed in the receiving groove 124. Along the arrangement direction of the caliper 12 and the reducer 50, one end of the lead screw nut 31 is housed in the receiving groove 124, and the other end of the lead screw nut 31 passes through two through holes in sequence and extends into the housing 51 of the reducer 50 to drive the gear set 52 of the reducer 50.

[0131] In this embodiment, the geometric axis of the motor shaft of the brake motor 40 is parallel to the axial direction of the lead screw nut 31. The stator of the brake motor 40 is used for electrical connection with an external circuit. When the electromechanical braking device 100 of this application is working, the alternating current of the external circuit can cause the stator to generate an alternating magnetic field. The rotor rotates around the axial direction of the motor shaft based on the alternating magnetic field, and drives the motor shaft to rotate synchronously. Due to the different voltage phases of the alternating current, the direction of rotation of the rotor is also different. That is, the motor shaft of the brake motor 40 can rotate in one direction to drive the friction plate 21 to achieve braking, and the motor shaft of the brake motor 40 can also rotate in another direction to release the friction plate 21 from the brake disc 1002 to release the brake. Here, one direction refers to the forward rotation of the motor shaft of the brake motor 40, and the other direction refers to the reverse rotation of the motor shaft of the brake motor 40.

[0132] When the brake motor 40 rotates forward, the reducer 50 drives the lead screw nut 31 to rotate forward along its own axis. The lead screw nut 31 drives the piston 32 to slide towards the brake disc 1002. The piston 32 pushes the friction pad 21 to slide towards the brake disc 1002 until the friction pad 21 contacts the brake disc 1002 to achieve braking. When the brake motor 40 rotates in reverse, the reducer 50 drives the lead screw nut 31 to rotate in reverse along its own axis. The lead screw nut 31 drives the piston 32 to slide away from the brake disc 1002, and the friction pad 21 is released from the brake disc 1002.

[0133] In some embodiments, a separation spring 22 is provided between the two friction plates 21. The opposite ends of the separation spring 22 abut against the two friction plates 21 respectively. The separation spring 22 is used to provide elastic force for the two friction plates 21 to move away from each other along the axial direction of the lead screw nut 31, so as to ensure that after the piston 32 slides away from the brake disc 1002, the two friction plates 21 release contact with the brake disc 1002 respectively to release the brake.

[0134] In one embodiment, the electromechanical braking device 100 of this application further includes a circuit board 60, which is housed and fixed within the housing 51 of the reducer 50. The housing 51 of the reducer 50 provides a reliable sealing and protection for the circuit board 60. The circuit board 60 is used for electrical connection with the brake motor 40 and also for electrical connection with external circuits. In one embodiment, the circuit board 60 is used for electrical connection with the vehicle's control system.

[0135] Specifically, when the vehicle needs to brake, the user inputs a braking command through the brake pedal. The vehicle's control system processes the braking command and transmits it to the circuit board 60. The circuit board 60 drives the stator of the brake motor 40 to generate an alternating magnetic field, which drives the rotor to rotate the motor shaft forward. The motor shaft drives the gear set 52 of the reducer 50, which is connected to the transmission, to rotate synchronously forward. The gear set 52 adjusts the torque and speed of the driving force based on its internal structure and outputs it through the output shaft 53. The output shaft 53 drives the lead screw nut 31 to rotate synchronously forward. The lead screw nut 31 converts its rotational motion into the sliding motion of the piston 32, that is, the lead screw nut 31 drives the piston 32 to slide along the axis of the lead screw nut 31. The sliding direction of the lead screw nut 31 is towards the brake disc 1002, and the piston 32 pushes the first friction plate 211 towards the brake disc 1002, causing the first friction plate 211 to contact the brake disc 1002 and generate friction.

[0136] After the first friction plate 211 contacts and abuts against the brake disc 1002, the stator of the brake motor 40 continues to drive the rotor to rotate forward. Following the same power transmission path, the piston 32 continues to slide axially along the lead screw nut 31. Because the position of the brake disc 1002 is fixed, the piston 32, the first friction plate 211, and the brake disc 1002 abut against each other in sequence. The piston 32 receives the reverse abutting force from the brake disc 1002 and transmits it to the lead screw nut 31. The lead screw nut 31 converts the driving force transmitted by the brake motor 40 into a reverse pushing action that causes the caliper 12 to slide relative to the caliper frame 11. That is, after the first friction plate 211 contacts and abuts against the brake disc 1002, the lead screw nut 31 rotates to further increase its length, pushing the caliper 12 towards the housing 51 to slide relative to the caliper frame 11. The housing 51 slides synchronously with the caliper 12 away from the brake disc 1002.

[0137] The sliding of the caliper 12 toward the housing 51 causes the pushing part 122 to slide synchronously toward the housing 51. Because the pushing part 122 is located on the side of the brake disc 1002 away from the housing 51, the sliding direction of the pushing part 122 is toward the brake disc 1002. That is, after the first friction plate 211 contacts and abuts against the brake disc 1002, the lead screw nut 31 further drives the pushing part 122 to slide toward the brake disc 1002. The pushing part 122 then drives the second friction plate 212 to slide synchronously toward the brake disc 1002 until the second friction plate 212 contacts the brake disc 1002 and generates friction.

[0138] Thus, the lead screw nut 31 drives the two friction pads 21 located on both sides of the brake disc 1002 to slide towards each other and contact the two outer surfaces of the brake disc 1002 opposite to each other, generating friction to brake the brake disc 1002 and realize vehicle braking.

[0139] After braking is completed, the circuit board 60 drives the stator of the brake motor 40 to generate an alternating electric field based on the working command input from the control system, thereby driving the rotor to reverse. The rotor sequentially drives the gear set 52 of the reducer 50, the output shaft 53 of the reducer 50, and the lead screw nut 31 to reverse synchronously. The reversal of the lead screw nut 31 can drive the piston 32 to slide away from the brake disc 1002, thereby increasing the distance between the two friction plates 21. Under the action of the release spring 22, the two friction plates 21 release contact with the brake disc 1002 to release the brake, allowing the wheel 1001 to continue rotating and drive the vehicle.

[0140] In one embodiment, the lead screw nut 31 of this application includes a ball screw 311 and a nut 312. The nut 312 is received in a receiving groove 124 and coaxially sleeved on the outside of the ball screw 311. The ball screw 311 is used for coaxial transmission with the output shaft 53 of the reducer 50. The output shaft 53 of the reducer 50 drives the ball screw 311 to rotate, thereby causing the nut 312 to slide.

[0141] The thread on the inner circumferential surface of the nut 312 engages with the thread on the outer circumferential surface of the ball screw 311. When the ball screw 311 is driven to rotate along its own axis by the reducer 50, the ball screw 311 can drive the nut 312 to slide along the axis of the ball screw 311. On the side of the nut 312 away from the reducer 50, the nut 312, piston 32, first friction plate 211, and brake disc 1002 are arranged sequentially along the axis of the ball screw 311. By driving the nut 312 to slide along the axis of the ball screw 311, the ball screw 311 can drive the friction plate 21 to move relative to the brake disc 1002.

[0142] In another embodiment, along the axial direction of the lead screw nut 31, the piston 32 has a transmission groove on its end face facing the brake motor 40, which is used to accommodate the lead screw nut 31. The threads on the inner wall of the transmission groove engage with the threads on the outer circumferential surface of the lead screw nut 31. When the lead screw nut 31 is driven to rotate along its own axis by the reducer 50, the lead screw nut 31 can directly drive the piston 32 to slide along its axis, thereby causing the friction plate 21 to move relative to the brake disc 1002.

[0143] In one embodiment, the electromechanical braking device 100 of this application further includes a position sensor. The position sensor is used to detect the rotation angle of the motor shaft of the brake motor 40, thereby adjusting the driving force of the brake motor 40. The position sensor includes a stator and a rotor. The stator of the position sensor is fixed to the housing 51 of the reducer 50, and the rotor of the position sensor is coaxially driven with the motor shaft of the brake motor 40 or the output shaft 53 of the reducer 50. In one embodiment, the stator of the position sensor is directly fixed to the housing 51 of the reducer 50. In another embodiment, the stator of the position sensor is fixed to a circuit board 60 and indirectly fixed to the housing 51 of the reducer 50 through the circuit board 60. The rotor of the position sensor is coaxially driven with the motor shaft of the brake motor 40 or the output shaft 53 of the reducer 50.

[0144] By coordinating the stator and rotor of the position sensor, the rotation angle of the motor shaft of the brake motor 40 and the output shaft 53 of the reducer 50 within the inner cavity of the reducer 50 housing 51 can be detected. The position sensor is also communicatively connected to the circuit board 60. The circuit board 60 receives the angle signal detected by the position sensor, calculates the rotation angle of the rotor in the brake motor 40, and then adjusts the driving force of the brake motor 40, that is, adjusts the braking force of the vehicle to match the user's braking command.

[0145] In one embodiment, the electromechanical braking device 100 of this application includes a locking mechanism. The locking mechanism is used to lock or release the motor shaft of the brake motor 40, or to lock or release the output shaft 53 of the reducer 50, thus enabling the electromechanical braking device 100 to also have a parking function. Specifically, in one embodiment, the locking mechanism is partially fixed to the housing 51 of the reducer 50, and another part acts on the motor shaft of the brake motor 40 or the output shaft 53 of the reducer 50. When the friction pad 21 of the electromechanical braking device 100 abuts against the brake disc 1002, the locking mechanism can lock the motor shaft of the brake motor 40 or the output shaft 53 of the reducer 50 to maintain the abutment state of the friction pad 21 against the brake disc 1002. The brake disc 1002 no longer rotates, and the vehicle thus enters a parking state.

[0146] The electromechanical braking device 100 of this application further includes a connector 71 and a sensor 72. The caliper 12 is used to house the sensor 72, the housing 51 of the reducer 50 is used to fix a connector 71, and the sensor 72 is used to detect the braking force of the friction plate 21 and transmit the detection signal to the circuit board 60 through the connector 71.

[0147] Please refer to the above. Figures 7-10 ,in Figure 7 This is a partial external structural diagram of the electromechanical braking device 100 provided in the embodiments of this application. Figure 8 This is an exploded structural diagram of the electromechanical braking device 100 provided in the embodiments of this application. Figure 9 This is a partial cross-sectional structural schematic diagram of the electromechanical braking device 100 provided in the embodiments of this application. Figure 10 This is a partially enlarged structural schematic diagram of the electromechanical braking device 100 provided in an embodiment of this application. For ease of description, Figure 7 The brake motor 40, the gear set 52 and output shaft 53 of the reducer 50, the lead screw nut 31, the piston 32 and the friction plate 21 have all been removed from the subsequent illustrations.

[0148] like Figures 7-10As shown, the axes of sensor 72 and lead screw nut 31 are both parallel to the arrangement direction of caliper 12 and reducer 50. Sensor 72 is housed in receiving groove 124 of caliper 12, and along the arrangement direction of caliper 12 and reducer 50, sensor 72 is located on the side of lead screw nut 31 away from friction plate 21. The detection end 72a of sensor 72 faces lead screw nut 31 and is used to detect the braking force applied to friction plate 21 by ball screw 311. The positioning end 72b of sensor 72 is fixedly connected to caliper 12. Connector 71 is arranged adjacent to sensor 72, one end of connector 71 is electrically connected to sensor 72, and the other end of connector 71 is electrically connected to circuit board 60.

[0149] Specifically, during the braking process of the electromechanical braking device 100 in this application, the circuit board 60 receives braking commands and drives the brake motor 40. The brake motor 40 drives the gear set 52 of the reducer 50. The gear set 52 adjusts the speed and torque of the braking force input by the brake motor 40 and transmits it to the lead screw nut 31. The lead screw nut 31 pushes the friction pad 21 towards the brake disc 1002. When the friction pad 21 abuts against the brake disc 1002, the braking force exerted by the friction pad 21 on the brake disc 1002 is transmitted sequentially through the friction pad 21 and the lead screw nut 31 to the detection end 72a of the sensor 72. The detection end 72a of the sensor 72 detects the braking force of the friction pad 21 and transmits the detection signal to the connector 71. The connector 71 transmits the detection signal to the circuit board 60. The circuit board 60 analyzes the detection signal and adjusts the driving force output by the brake motor 40 based on the detection signal so that the braking force exerted by the friction pad 21 on the brake disc 1002 matches the user's braking command. This ensures reliable braking of the electromechanical braking device 100 of this application.

[0150] In one embodiment, the electromechanical braking device 100 of this application further includes a thrust bearing 33, which is arranged between the lead screw nut 31 and the sensor 72.

[0151] Please refer to the above. Figure 11 The diagram shows a cross-sectional view of the internal components of the caliper 12 of the electromechanical braking device 100 provided in this embodiment of the application.

[0152] like Figure 11As shown, the axis of the thrust bearing 33 is parallel to the arrangement direction of the caliper 12 and the reducer 50. Along the arrangement direction of the caliper 12 and the reducer 50, the thrust bearing 33 abuts against the lead screw nut 31 and the sensor 72. The opposite ends of the thrust bearing 33 are rotatably connected. In one embodiment, the thrust bearing 33 includes a first shaft ring 331 and a second shaft ring 332. The axes of both the first shaft ring 331 and the second shaft ring 332 are parallel to the arrangement direction of the caliper 12 and the reducer 50, and the first shaft ring 331 and the second shaft ring 332 are rotatably connected. Along the arrangement direction of the caliper 12 and the reducer 50, the lead screw nut 31, the first shaft ring 331, the second shaft ring 332, and the detection end 72a of the sensor 72 are arranged in sequence, abutting against each other.

[0153] Along the arrangement direction of the caliper 12 and the reducer 50, the first shaft ring 331 is used to fix the ball screw 311 connected to the lead screw nut 31, and the second shaft ring 332 is used to hold the sensor 72 away from the surface of the reducer 50. During the braking process of the electromechanical braking device 100 of this application, the ball screw 311 will rotate relative to the caliper 12 under the driving force of the brake motor 40, and drive the first shaft ring 331 to rotate. At this time, the second shaft ring 332 remains stationary relative to the sensor 72.

[0154] That is, the thrust bearing 33 can ensure that the axial braking force acting on the lead screw nut 31 is transmitted to the sensor 72, while avoiding the torque of the ball screw 311 being transmitted to the sensor 72 and affecting the detection data of the sensor 72, thus ensuring that the sensor 72 remains relatively stationary during the operation of the electromechanical braking device 100 of this application.

[0155] On the other hand, the installation of the thrust bearing 33 also reduces the friction between the sensor 72 and the ball screw 311, avoids frictional wear of the sensor 72, ensures the service life of the sensor 72, and improves the detection accuracy of the sensor 72 in this application, thereby improving the detection accuracy of the electromechanical braking device 100 in this application.

[0156] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the sensor 72 and the connector 71 are arranged adjacent to each other. The housing 721 of the sensor 72 and the housing 711 of the connector 71 include two opposing positioning surfaces. One of the positioning surfaces is used to fix the conductive sheet 81, and the other positioning surface is used to install the pin 82, which abuts against the conductive sheet 81.

[0157] In one embodiment, such as Figure 12As shown, the locating surface of the housing 711 of connector 71 is used to fix the conductive sheet 81, and the locating surface of the housing 721 of sensor 72 is used to install the pin 82. Correspondingly, along the arrangement direction of caliper 12 and reducer 50, one end of pin 82 is used to conduct electricity with the internal circuit of sensor 72, and the other end of pin 82 is used to abut against conductive sheet 81, which conducts electricity with the internal circuit of connector 71. This achieves an electrical connection between connector 71 and sensor 72.

[0158] In another embodiment, such as Figure 13 As shown, the locating surface of the housing 711 of connector 71 is used to mount the pin 82, and the housing 721 of sensor 72 is used to fix the conductive plate 81. Correspondingly, along the arrangement direction of caliper 12 and reducer 50, one end of pin 82 is used to conduct electricity with the internal circuit of connector 71, and the other end of pin 82 is used to abut against conductive plate 81, which conducts electricity with the internal circuit of sensor 72. This achieves an electrical connection between connector 71 and sensor 72.

[0159] In the two embodiments described above, the connector 71 and sensor 72 achieve electrical connection through the contact of the conductive sheet 81 and the pin 82. During the braking process of the electromechanical braking device 100, the circuit board 60 drives the brake motor 40 to output braking force based on a braking command. This braking force is transmitted sequentially to the brake disc 1002 via the reducer 50, the lead screw nut 31, and the friction plate 21. The braking force acting on the brake disc 1002 is transmitted to the sensor 72 through the lead screw nut 31 and the thrust bearing 33. The sensor 72 detects the braking force of the friction plate 21 and transmits the detection signal to the connector 71 via the conductive sheet 81 or the pin 82. The connector 71 transmits the detection signal to the circuit board 60. The circuit board 60 controls the braking force output by the brake motor 40 based on the detection signal. This achieves braking feedback for the electromechanical braking device 100, ensuring reliable braking.

[0160] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the distance between the two positioning surfaces is less than the sum of the natural length of the pin 82 and the natural length of the conductive sheet 81. That is, along the arrangement direction of the caliper 12 and the reducer 50, at least one of the conductive sheet 81 and the pin 82 is elastic. When the pin 82 abuts against the conductive sheet 81 and conducts electricity, the elastic conductive sheet 81 and / or the pin 82 are in a pre-compressed state.

[0161] During the operation of the electromechanical braking device 100 of this application, since the electromechanical braking device 100 is close to the wheel 1001, the vibration generated by the vehicle during operation will be transmitted to the electromechanical braking device 100 through the wheel 1001. This may cause relative displacement between the sensor 72 and the connector 71.

[0162] Understandably, the conductive sheet 81 and / or pin 82 are provided, and the conductive sheet 81 and / or pin 82 installed in the electromechanical braking device 100 of this application are in a pre-compressed state. This allows the elastic conductive sheet 81 and / or pin 82 to increase their size based on their own elasticity when external vibration increases the relative distance between the sensor 72 and the connector 71, while maintaining the contact and conduction between the conductive sheet 81 and the pin 82. This ensures reliable conduction between the sensor 72 and the connector 71.

[0163] For ease of description, the positioning surface on the housing 711 of connector 71 is defined as the first positioning surface 712, and the positioning surface on the housing 721 of sensor 72 is defined as the second positioning surface 722. In the embodiments of this application and subsequent embodiments, the conductive sheet 81 is defined as fixed on the first positioning surface 712, and the pin 82 is mounted on the second positioning surface 722. It is worth noting that in some other embodiments, the conductive sheet 81 may also be fixed on the second positioning surface 722, and the pin 82 may also be mounted on the first positioning surface 712; this application does not impose any particular limitation on this.

[0164] In one embodiment, the pin 82 includes a spring 821 and a guide rod 822. Along the arrangement direction of the caliper 12 and the reducer 50, one end of the spring 821 is used to hold the guide rod 822, and the other end of the spring 821 is used to hold the housing 721 of the sensor 72 or to hold the housing 711 of the connector 71. When the pin 82 abuts against the conductive sheet 81, the length of the spring 821 is less than the natural length of the spring 821.

[0165] Please refer to the above. Figure 14 and Figure 15 ,in Figure 14 This is a cross-sectional structural diagram of the connection between the caliper 12 and the reducer 50 in one embodiment of the electromechanical braking device 100 provided in this application. Figure 15 A cross-sectional structural schematic diagram of the connection between the caliper 12 and the reducer 50 in another embodiment of the electromechanical braking device 100 provided in this application.

[0166] like Figure 14 and Figure 15As shown, the pin 82 is elastic along the arrangement direction of the caliper 12 and the reducer 50. When the pin 82 abuts against the conductive plate 81 and conducts, the spring 821 is in a pre-compressed state. That is, the pin 82 achieves contact and conduction with the conductive plate 81 through the elastic force of the spring 821 itself, and during the operation of the electromechanical braking device 100 of this application, the elastic force of the spring 821 itself eliminates the influence of external vibration on the relative displacement between the connector 71 and the sensor 72. This ensures reliable conduction between the sensor 72 and the connector 71 during the operation of the electromechanical braking device 100 of this application, thereby guaranteeing reliable braking of the electromechanical braking device 100 of this application.

[0167] Specifically, in Figure 14 In the illustration, along the arrangement direction of the caliper 12 and the reducer 50, one end of the guide rod 822 is elastically connected to the housing 721 of the sensor 72 via a spring 821, and the other end of the guide rod 822 is used to abut against the conductive plate 81 for conduction. That is, when external vibration increases the relative distance between the connector 71 and the sensor 72, the spring 821 pushes the guide rod 822 to maintain contact and conduction with the conductive plate 81 based on its own elastic force. This ensures reliable conduction between the sensor 72 and the connector 71, and ensures reliable braking of the electromechanical braking device 100 of this application.

[0168] exist Figure 15 In the illustration, along the arrangement direction of the caliper 12 and the reducer 50, one end of the guide rod 822 is connected to the conductive plate 81 via a spring 821, while the other end of the guide rod 822 is used for fixed connection or contact with the housing 721 of the sensor 72. That is, when external vibration increases the relative distance between the connector 71 and the sensor 72, the spring 821 increases its own size along the arrangement direction of the caliper 12 and the reducer 50 based on its own elasticity to ensure contact and conduction with the conductive plate 81. This ensures reliable conduction between the sensor 72 and the connector 71, and guarantees reliable braking of the electromechanical braking device 100 of this application.

[0169] In one embodiment, when the pin 82 abuts against the conductive sheet 81, the difference between the length dimension of the spring 821 and the natural length of the spring 821 is less than the maximum compression of the spring 821. Correspondingly, when the pin 82 abuts against the conductive sheet 81 and conducts electricity, the pre-compression of the spring 821 is less than the maximum compression of the spring 821, so that the spring 821 can still produce elastic deformation when external vibration reduces the distance between the sensor 72 and the connector 71.

[0170] That is, during the operation of the electromechanical braking device 100 of this application, the spring 821 is used to absorb the vibration between the sensor 72 and the connector 71 along the arrangement direction of the caliper 12 and the reducer 50. This ensures that under the action of external vibration, the contact between the pin 82 and the conductive plate 81 is maintained, thereby ensuring reliable conduction between the connector 71 and the sensor 72, and ensuring reliable braking of the electromechanical braking device 100 of this application.

[0171] In one embodiment, the pin 82 further includes a sleeve 823, which is fixed to the second positioning surface 722 and is used to accommodate at least a portion of the spring 821 and at least a portion of the guide rod 822.

[0172] Please refer to the above. Figure 16 and Figure 17 ,in Figure 16 This is another cross-sectional view of the connection between the caliper 12 and the reducer 50 in one embodiment of the electromechanical braking device 100 provided in this application. Figure 17 Another cross-sectional view of the connection between the caliper 12 and the reducer 50 in another embodiment of the electromechanical braking device 100 provided in this application.

[0173] like Figure 16 and Figure 17 As shown, sleeve 823 is fixed to the surface of sensor 72 facing connector 71. Sleeve 823 is fitted onto the outer edge of spring 821. Along the arrangement direction of caliper 12 and reducer 50, one end of guide rod 822 extends into sleeve 823 and abuts against spring 821. Figure 16 In the illustration, the other end of the guide rod 822 is used to abut against the conductive sheet 81. Figure 17 In the illustration shown, the other end of the guide rod 822 is used to abut or be fixedly connected to the second positioning surface 722.

[0174] In this embodiment, the geometric axis of the sleeve 823 is parallel to the arrangement direction of the caliper 12 and the reducer 50. The sleeve 823 guides the sliding direction of the guide rod 822 by limiting the extension and retraction direction of the spring 821. Specifically, during the operation of the electromechanical braking device 100, when external vibration acts on the electromechanical braking device 100 and causes relative displacement between the caliper 12 and the reducer 50 along their arrangement direction, the sleeve 823 is used to limit the extension and retraction direction of the spring 821, preventing the spring 821 from deforming perpendicular to the arrangement direction of the caliper 12 and the reducer 50 under external vibration. This ensures reliable extension and retraction of the spring 821 and reliable contact between the pin 82 and the conductive plate 81, thereby ensuring reliable braking of the electromechanical braking device 100.

[0175] In one embodiment, the second positioning surface 722 includes a groove 7221 for receiving at least a portion of the spring 821 and at least a portion of the guide rod 822.

[0176] Please refer to the above. Figure 18 and Figure 19 ,in Figure 18 This is another cross-sectional structural schematic diagram of the connection between the caliper 12 and the reducer 50 in another embodiment of the electromechanical braking device 100 provided in this application. Figure 19 This is another cross-sectional structural schematic diagram of the connection between the caliper 12 and the reducer 50 in another embodiment of the electromechanical braking device 100 provided in this application.

[0177] like Figure 18 and Figure 19 As shown, along the arrangement direction of the caliper 12 and the reducer 50, the groove 7221 is used to define the extension direction of the spring 821 and the sliding direction of the guide rod 822. Specifically, in Figure 18 In the illustration, the two opposite ends of the spring 821 are respectively abutted or fixedly connected to the bottom of the groove 7221 and the guide rod 822. One end of the guide rod 822 extends into the groove 7221, and the other end of the guide rod 822 abuts against the conductive sheet 81 for conduction. Figure 19 In the illustration shown, the guide rod 822 is housed in the groove 7221, one end of the spring 821 is in contact with the conductive sheet 81 and conducts electricity, and the other end of the spring 821 extends into the groove 7221 and abuts against the guide rod 822.

[0178] In this embodiment, the extension axis of the groove 7221 is parallel to the arrangement direction of the caliper 12 and the reducer 50. The groove 7221 guides the sliding direction of the guide rod 822 by limiting the extension and retraction direction of the spring 821. Specifically, during the operation of the electromechanical braking device 100, when external vibration acts on the electromechanical braking device 100 and causes relative displacement between the caliper 12 and the reducer 50 along their arrangement direction, the groove wall of the groove 7221 is used to limit the extension and retraction direction of the spring 821, preventing the spring 821 from deforming perpendicular to the arrangement direction of the caliper 12 and the reducer 50 under external vibration. This ensures reliable extension and retraction of the spring 821 and reliable contact between the pin 82 and the conductive sheet 81, thereby ensuring reliable braking of the electromechanical braking device 100.

[0179] For ease of description, the illustrations in the embodiments of this application and subsequent embodiments are all based on the illustrations corresponding to the pin 82 including the sleeve 823. That is, in the embodiments of this application and subsequent embodiments, the spring 821 of the pin 82 guides its extension and retraction direction through the sleeve 823.

[0180] In one embodiment, the guide rod 822 is used to be embedded in the second positioning surface 722 along the arrangement direction of the caliper 12 and the reducer 50 and extends into the housing 721 of the sensor 72.

[0181] Please refer to the above. Figure 20 and Figure 21 ,in Figure 20 This is another cross-sectional view of the connection between the caliper 12 and the reducer 50 in another embodiment of the electromechanical braking device 100 provided in this application. Figure 21 This is another cross-sectional view of the connection between the caliper 12 and the reducer 50 in another embodiment of the electromechanical braking device 100 provided in this application.

[0182] like Figure 20 and Figure 21 As shown, along the arrangement direction of the caliper 12 and the reducer 50, one end of the guide rod 822 facing the second positioning surface 722 is used to extend into the second positioning surface 722 and communicate with the circuit board 723 inside the sensor 72 corresponding to the second positioning surface 722. That is, along the arrangement direction of the caliper 12 and the reducer 50, one end of the guide rod 822 is connected to the internal circuit of the sensor 72, and the other end of the guide rod 822 is connected to the circuit board 723 inside the connector 71 through the conductive sheet 81. Thus, when the electromechanical braking device 100 of this application is working, the detection signal of the sensor 72 can be transmitted to the inside of the connector 71 through the guide rod 822 and the conductive sheet 81, and then transmitted to the circuit board 60 by other structures of the connector 71. This ensures reliable braking of the electromechanical braking device 100 of this application.

[0183] In other embodiments, when the conductive sheet 81 is fixed to the second positioning surface 722, the corresponding guide rod 822 is used to be embedded in the first positioning surface 712 along the arrangement direction of the caliper 12 and the reducer 50 and extends into the housing 711 of the connector 71.

[0184] In one embodiment, both the sleeve 823 and the guide rod 822 are made of metal. Along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the inner wall of the sleeve 823 is used to abut against the outer wall of the guide rod 822. The sleeve 823 is used to be embedded in the second positioning surface 722 and extends into the housing 721 of the sensor 72.

[0185] Please refer to the above. Figure 22 The diagram shown is a structural schematic of the electromechanical braking device 100 provided in this embodiment of the application at the connection between the caliper 12 and the reducer 50.

[0186] like Figure 22As shown, along the arrangement direction of the caliper 12 and the reducer 50, one end of the sleeve 823 extends into the second positioning surface 722 and is connected to the circuit board 723 inside the sensor 72 corresponding to the second positioning surface 722. The other end of the sleeve 823 extends towards the first positioning surface 712 and is spaced apart from the first positioning surface 712. The end face of the sleeve 823 facing the first positioning surface 712 has an opening 8231. The spring 821 is housed inside the sleeve 823. One end of the guide rod 822 extends into the sleeve 823 through the opening 8231 and abuts against the spring 821. The other end of the guide rod 822 abuts against the conductive sheet 81 and is connected.

[0187] Along the direction perpendicular to the arrangement of the caliper 12 and the reducer 50, the outer wall of the guide rod 822 abuts against the inner wall of the sleeve 823, thus achieving conductivity between the guide rod 822 and the sleeve 823. That is, the detection signal generated when the sensor 72 is working is transmitted sequentially through the sleeve 823, the guide rod 822, and the conductive plate 81 to the interior of the connector 71, and then transmitted to the circuit board 60 by other structures of the connector 71. This ensures reliable braking of the electromechanical braking device 100 of this application.

[0188] In other embodiments, when the conductive sheet 81 is fixed to the second positioning surface 722, the corresponding sleeve 823 is used to be embedded in the first positioning surface 712 and extend into the housing 711 of the connector 71.

[0189] In one embodiment, the sensor 72 includes a circuit board 723, which processes the pressure signal input from the detection end 72a of the sensor 72 and converts it into a detection signal for output. The sleeve 823 is electrically connected to and fixedly connected to the circuit board 723. In one embodiment, the sleeve 823 is welded to the circuit board 723. For example, wave soldering is used between the sleeve 823 and the circuit board 723 to ensure reliable fixation of the pin 82, thereby preventing external vibration from causing the pin 82 to detach from the circuit board. This ensures reliable conductivity between the sensor 72 and the connector 71, and reliable braking of the electromechanical braking device 100 of this application.

[0190] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the pin 82 includes a first segment 82a and a second segment 82b connected together. The first segment 82a is used to be embedded in the second positioning surface 722 and extends into the housing 721 of the sensor 72. The second segment 82b is located between the two positioning surfaces. When the pin 82 abuts against the conductive sheet 81, the length of the second segment 82b is less than the natural length of the second segment 82b.

[0191] Please refer to the above. Figure 23 The diagram shown is another structural schematic of the electromechanical braking device 100 provided in this application embodiment at the connection between the caliper 12 and the reducer 50.

[0192] like Figure 23 As shown, along the arrangement direction of the caliper 12 and the reducer 50, the first segment 82a of the pin 82 is used to extend into the second positioning surface 722 and conduct electricity with the internal circuitry of the sensor 72. The pin 82 is used to abut against the conductive sheet 81 for conduction. That is, during the operation of the electromechanical braking device 100 of this application, the detection signal of the sensor 72 can be transmitted sequentially through the pin 82 and the conductive sheet 81 to the inside of the connector 71, and then transmitted to the circuit board 60 by other structures of the connector 71. This ensures reliable braking of the electromechanical braking device 100 of this application.

[0193] exist Figure 23 In the illustration, the second segment 82b of the pin 82 is elastic. When the pin 82 abuts against the conductive sheet 81, the second segment 82b of the pin 82 is in a pre-compressed state. During the operation of the electromechanical braking device 100 of this application, when external vibration increases the distance between the sensor 72 and the connector 71, the second segment 82b of the pin 82 increases its size based on its own elasticity, ensuring contact and conduction with the conductive sheet 81. That is, the elasticity of the second segment 82b of the pin 82 ensures contact and conduction with the conductive sheet 81. This ensures reliable braking of the electromechanical braking device 100 of this application.

[0194] In one embodiment, when the pin 82 abuts against the conductive sheet 81, the difference between the length dimension of the second segment 82b and the natural length of the second segment 82b is less than the maximum compression of the second segment 82b. Accordingly, when the pin 82 abuts against the conductive sheet 81 and conducts electricity, the pre-compression of the second segment 82b is less than the maximum compression of the second segment 82b, so that the second segment 82b can still undergo elastic deformation when external vibration reduces the distance between the sensor 72 and the connector 71.

[0195] That is, during the operation of the electromechanical braking device 100 of this application, the second section 82b is used to absorb the vibration between the sensor 72 and the connector 71 along the arrangement direction of the caliper 12 and the reducer 50. This ensures that under the action of external vibration, the contact between the pin 82 and the conductive plate 81 is maintained, thereby ensuring reliable conduction between the connector 71 and the sensor 72, and ensuring reliable braking of the electromechanical braking device 100 of this application.

[0196] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the pin 82 further includes a third segment 82c, which is connected to the first segment 82a via a second segment 82b. Figure 23In the illustration, the first segment 82a is used to connect with the internal circuitry of the sensor 72, and the third segment 82c is used to connect with the conductive sheet 81. During the operation of the electromechanical braking device 100 of this application, the detection signal from the sensor 72 can be transmitted sequentially through the first segment 82a, the second segment 82b, the third segment 82c, and the conductive sheet 81 to the inside of the connector 71, and then transmitted to the circuit board 60 by other structures of the connector 71. This ensures reliable braking of the electromechanical braking device 100 of this application.

[0197] In one embodiment, the elastic moduli of the first segment 82a and the third segment 82c are respectively smaller than the elastic moduli of the second segment 82b. Because the smaller the elastic moduli of an elastic material, the smaller the elastic deformation produced by the elastic material under the same force. Figure 23 In the illustration, the elastic coefficients of the first segment 82a and the third segment 82c are smaller than those of the second segment 82b, giving them greater stiffness. This ensures reliable conductivity between the first segment 82a and the internal circuitry of the sensor 72, and between the third segment 82c and the conductive sheet 81, while maintaining the elasticity of the pin 82. This, in turn, guarantees reliable braking of the electromechanical braking device 100 of this application.

[0198] exist Figure 23 In the illustrated figure, the pin 82 of the electromechanical braking device 100 of this application is configured as a spring structure, wherein the distance between two adjacent spring coils of the first segment 82a and the third segment 82c of the pin 82 is smaller than the distance between two adjacent spring coils of the second segment 82b of the pin 82. This ensures that the second segment 82b has a relatively large elastic coefficient, so as to absorb external vibrations along the arrangement direction of the caliper 12 and the reducer 50 during the operation of the electromechanical braking device 100 of this application, thereby ensuring reliable braking of the electromechanical braking device 100 of this application.

[0199] In another embodiment, the elastic coefficient of at least one of the first segment 82a and the third segment 82c is equal to the elastic coefficient of the second segment 82b. That is, the distance between two adjacent spring coils of at least one of the first segment 82a and the third segment 82c is equal to the distance between two adjacent spring coils of the second segment 82b.

[0200] It is worth noting that, compared to the embodiment where the pin 82 includes a spring 821, the pin 82 in this application embodiment achieves an elastic connection between the conductive sheet 81 and the second positioning surface 722 based on its own elasticity. Correspondingly, the first segment 82a and the second segment 82b in this application embodiment cannot be directly correlated to the embodiment where the pin 82 includes a spring 821.

[0201] In one embodiment, the conductive sheet 81 includes a bent section 811. Along the arrangement direction of the caliper 12 and the reducer 50, the bent section 811 bends toward the second positioning surface 722. When the pin 82 abuts against the conductive sheet 81, the bent section 811 deforms toward the first positioning surface 712.

[0202] Please refer to the above. Figure 24 The diagram shown is another structural schematic of the electromechanical braking device 100 provided in the embodiment of this application.

[0203] like Figure 24 As shown, along the arrangement direction of the caliper 12 and the reducer 50, one end of the pin 82 is used to conduct to the internal circuitry of the sensor 72, and the other end of the pin 82 abuts against the conductive sheet 81 for conduction. The conductive sheet 81, perpendicular to the arrangement direction of the caliper 12 and the reducer 50, includes a connected positioning section 812 and a bending section 811. The positioning section 812 is fixed within the housing 711 of the connector 71, and the bending section 811 of the conductive sheet 81 is elastic along the arrangement direction of the caliper 12 and the reducer 50.

[0204] During the operation of the electromechanical braking device 100 of this application, when external vibration increases the distance between the sensor 72 and the connector 71, the bent section 811 can move towards the second positioning surface 722 based on its own elasticity to ensure the contact and conduction between the conductive sheet 81 and the pin 82. This ensures reliable conduction between the connector 71 and the sensor 72, and ensures reliable braking of the electromechanical braking device 100 of this application.

[0205] In one embodiment, when the pin 82 abuts against the conductive sheet 81 along the arrangement direction of the caliper 12 and the reducer 50, the distance between the bent section 811 and the first positioning surface 712 is less than the maximum distance between the bent section 811 and the first positioning surface 712 when the bent section 811 undergoes elastic deformation. That is, when the pin 82 and the conductive sheet 81 abut, the deformation of the bent section 811 toward the first positioning surface 712 is less than the maximum deformation of the bent section 811 toward the first positioning surface 712, so that the bent section 811 can still undergo elastic deformation when external vibration reduces the distance between the sensor 72 and the connector 71.

[0206] That is, during the operation of the electromechanical braking device 100 of this application, the bent section 811 is used to absorb the vibration between the sensor 72 and the connector 71 along the arrangement direction of the caliper 12 and the reducer 50. This ensures that the contact between the pin 82 and the conductive piece 81 is maintained under external vibration, thereby ensuring reliable conduction between the connector 71 and the sensor 72, and ensuring reliable braking of the electromechanical braking device 100 of this application.

[0207] Therefore, based on the limitations of the above embodiments, the electromechanical braking device 100 of this application is connected to the brake motor 40 and the lead screw nut 31 via the gear set 52 of the reducer 50, so as to process and transmit the driving force of the brake motor 40 to the lead screw nut 31. Furthermore, based on the rotational connection between the ball screw 311 in the lead screw nut 31 and the caliper 12, the ball screw 311 can drive the two friction plates 21 to slide towards the brake disc 1002 while rotating, thereby braking the brake disc 1002 and realizing the braking function of the electromechanical braking device 100 of this application.

[0208] The electromechanical braking device 100 of this application also connects to the circuit board 60 via a connector 71, and connects the sensor 72 and the connector 71 via a pin 82 and a conductive plate 81. When the electromechanical braking device 100 is working, the sensor 72 transmits the braking force of the friction plate 21 to the circuit board 60. If the braking force does not match the user's braking intention, the output power of the brake motor 40 is adjusted, thereby ensuring reliable braking of the electromechanical braking device 100. Simultaneously, at least one of the pin 82 and the conductive plate 81 is elastic, absorbing external vibrations that cause changes in the distance between the connector 71 and the sensor 72, and ensuring contact and conduction between the pin 82 and the conductive plate 81. This ensures reliable conduction between the connector 71 and the sensor 72, and guarantees reliable braking of the electromechanical braking device 100.

[0209] The electromechanical braking device 100 of this application, by providing a flexible pin 82 and / or conductive sheet 81, and ensuring that the pin 82 and the conductive sheet 81 abut and conduct, guarantees reliable conduction between the connector 71 and the sensor 72 under external vibration, thereby ensuring that the braking force detected by the sensor 72 can be transmitted to the circuit board 60. This ensures reliable braking by the electromechanical braking device 100. When the electromechanical braking device 100 is applied to a vehicle, it can output driving force through the brake motor 40, and act on the brake disc 1002 through the reducer 50, lead screw nut 31, piston 32, caliper 12, and friction pad 21 to achieve the vehicle's braking function. The elasticity of the pins 82 and / or conductive plates 81 of the electromechanical braking device 100 helps to adapt to the wheel-side environment of the vehicle, ensuring the continuity of the connector 71 and sensor 72 under the action of external vibration transmitted through the wheel 1001 during the operation of the vehicle. This ensures reliable braking of the electromechanical braking device 100, resulting in better braking performance and improved user experience.

[0210] The structure of the electromechanical braking device 100 of this application can also be applied to other application scenarios involving rotational and feed motion. For example, the structure of the electromechanical braking device 100 is also applied to steering systems and machine tool equipment. This application does not impose any particular limitation on this. Because the flexible pin 82 and / or conductive sheet 81 of the electromechanical braking device 100 of this application are disposed between the two opposing positioning surfaces of the sensor 72 and the connector 71, reliable braking can be ensured even in other application scenarios using the structure of the electromechanical braking device 100 of this application.

[0211] Based on the descriptions of the above embodiments, it can be seen that the conductive sheet 81 is elastic due to the deformation of the bending section 811, and the pin 82 is elastic due to the internal spring 821, or it can be elastic based on its own material and structural design. For ease of description, the illustrations in the embodiments of this application and subsequent embodiments are all based on the embodiment where the pin 82 includes the spring 821. Correspondingly, the pin 82 is connected to the conductive sheet 81 through the guide rod 822, and the sleeve 823 is connected to the internal circuit of the sensor 72 through the embedded second positioning surface 722. That is, the structures of the pin 82 and the conductive sheet 81 in the subsequent embodiments are all based on... Figure 22 The illustration is shown below.

[0212] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the first positioning surface 712 is provided with a protrusion 713, the protrusion 713 including a guide hole 714 for exposing the conductive sheet 81 and accommodating a portion of the pin 82.

[0213] Please refer to the above. Figure 25 and Figure 26 ,in Figure 25 This is another schematic diagram of the electromechanical braking device 100 provided in the embodiments of this application at the connection between the caliper 12 and the reducer 50. Figure 26 This is a cross-sectional structural diagram of the electromechanical braking device 100 provided in the embodiments of this application at the connection between the caliper 12 and the reducer 50.

[0214] like Figure 25 and Figure 26As shown, the guide hole 714 is used to guide the pin 82 to extend into and abut against the conductive plate 81 for conduction. Along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the wall of the guide hole 714 is used to limit the position of one end of the pin 82 toward the first positioning surface 712, thereby preventing the pin 82 from detaching from the conductive plate 81 due to external vibration. That is, the guide hole 714 is used to prevent external vibration along the arrangement direction perpendicular to the caliper 12 and the reducer 50 from causing relative displacement between the conductive plate 81 and the pin 82, thus preventing the conductive plate 81 from detaching from the pin 82. This ensures reliable conduction between the connector 71 and the sensor 72, and ensures reliable braking of the electromechanical braking device 100 of this application.

[0215] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the guide hole 714 includes a connected first sub-hole 7141 and a second sub-hole 7142. The first sub-hole 7141 is connected to the first positioning surface 712 through the second sub-hole 7142. The diameter of the first sub-hole 7141 is greater than or equal to the diameter of the second sub-hole 7142. Figure 26 In the illustration shown, along the arrangement direction of the caliper 12 and the reducer 50 toward the first positioning surface 712, the diameter of the first sub-hole 7141 gradually decreases, which facilitates the insertion of the pin 82 into the guide hole 714.

[0216] In one embodiment, the diameter of the outer peripheral surface of the pin 82, which is accommodated in the guide hole 714, is smaller than the diameter of the guide hole 714 along the arrangement direction perpendicular to the caliper 12 and the reducer 50. That is, along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the outer wall of the pin 82 is spaced apart from the hole wall of the guide hole 714. It can be understood that during the operation of the electromechanical braking device 100 of this application, when external vibration causes displacement between the connector 71 and the sensor 72 along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the distance between the outer wall of the pin 82 and the hole wall of the guide hole 714 is used to avoid the pin 82 from colliding with the guide hole 714 due to external vibration and causing damage to the pin 82. This ensures reliable conduction between the connector 71 and the sensor 72 and ensures reliable braking of the electromechanical braking device 100 of this application.

[0217] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the outer peripheral surface of the pin 82 includes two connected segments, one of which is connected to the second positioning surface 722 through the other segment; wherein the diameter of one segment is smaller than the diameter of the other segment.

[0218] For ease of description, the segment of pin 82 with a relatively small diameter is defined as extension segment 824, and the segment of pin 82 with a relatively large diameter is defined as connecting segment 825. It is worth noting that the extension segment 824 and connecting segment 825 of pin 82 are configured based on the diameter of the outer circumferential surface of pin 82. In the above embodiment, the pin 82 includes connected first segment 82a, second segment 82b, and third segment 82c, which is configured based on the function of pin 82.

[0219] Please refer to the above. Figure 27 The diagram shown is another cross-sectional view of the electromechanical braking device 100 provided in this embodiment of the application at the connection between the caliper 12 and the reducer 50.

[0220] like Figure 27 As shown, the connecting section 825 is used to connect to the second positioning surface 722, and the extension section 824 extends towards the first positioning surface 712 along the arrangement direction of the caliper 12 and the reducer 50, facilitating contact and conduction between the pin 82 and the conductive sheet 81. The diameter of the connecting section 825 is larger than the diameter of the extension section 824 along the arrangement direction perpendicular to the caliper 12 and the reducer 50, thereby increasing the connection strength between the pin 82 and the second positioning surface 722 and preventing the pin 82 from detaching from the second positioning surface 722 under external vibration, thus improving the connection stability of the pin 82. This ensures reliable conduction between the connector 71 and the sensor 72, guaranteeing reliable braking of the electromechanical braking device 100 of this application.

[0221] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the protrusion 713 includes a first surface 7131 facing the second positioning surface 722, one of the first surface 7131 and the second positioning surface 722 for fixing a sealing ring 90 for surrounding the pin 82 and for abutting against the other of the first surface 7131 and the second positioning surface 722.

[0222] Please refer to the above. Figure 28 The diagram shown is another cross-sectional view of the electromechanical braking device 100 provided in this embodiment of the application at the connection between the caliper 12 and the reducer 50.

[0223] like Figure 28As shown, along the arrangement direction of the caliper 12 and the reducer 50, a sealing ring 90 is provided between the first surface 7131 and the second positioning surface 722. The opposite ends of the sealing ring 90 are used for abutment between the two opposing surfaces of the sensor 72 and the connector 71. The sealing ring 90 is used to surround the pin 82 and, together with the protrusion 713 and the second positioning surface 722, seals the pin 82. This prevents external impurities from contacting the pin 82 and the conductive sheet 81 during the operation of the electromechanical braking device 100 of this application, thereby ensuring reliable conduction between the connector 71 and the sensor 72 and ensuring reliable braking of the electromechanical braking device 100 of this application.

[0224] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, one of the first surface 7131 and the second positioning surface 722 includes an annular groove, one end of the sealing ring 90 is used to abut the bottom of the annular groove, and the other end of the sealing ring 90 is used to abut the other of the first surface 7131 and the second positioning surface 722.

[0225] Please refer to the above. Figure 29 and Figure 30 ,in Figure 29 This is a schematic diagram of the external structure of the connector 71 of the electromechanical braking device 100 provided in the embodiments of this application. Figure 30 A partial external structural diagram of the connector 71 of the electromechanical braking device 100 provided in the embodiments of this application.

[0226] like Figure 29 and Figure 30 As shown, the first surface 7131 includes an annular groove 7132. Along the arrangement direction of the caliper 12 and the reducer 50, the opposite ends of the sealing ring 90 abut against the bottom of the annular groove 7132 and the second positioning surface 722. In this embodiment, the annular groove 7132 increases the installation space of the sealing ring 90 between the protrusion 713 and the second positioning surface 722, facilitating the installation and fixing of the sealing ring 90. On the other hand, the annular groove 7132 also makes the thickness of the sealing ring 90 larger along the arrangement direction of the caliper 12 and the reducer 50, which can improve the sealing effect of the sealing ring 90 and also facilitate the preparation of the sealing ring 90.

[0227] exist Figure 30In the illustration, along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the inner surface of the sealing ring 90 abuts against the inner wall of the annular groove 7132, and the outer surface of the sealing ring 90 is spaced apart from the outer wall of the annular groove 7132. When the pin 82 abuts against the conductive plate 81 and conducts electricity, the thickness of the sealing ring 90 is less than its natural thickness along the arrangement direction of the caliper 12 and the reducer 50. It can be understood that the distance between the outer surface of the sealing ring 90 and the outer wall of the annular groove 7132 along the arrangement direction perpendicular to the caliper 12 and the reducer 50 allows the sealing ring 90 to deform along this direction, thereby ensuring the sealing effect of the sealing ring 90 on the pin 82.

[0228] In another embodiment, the annular groove may also be provided on the second positioning surface 722, and this application does not impose any particular limitation on this.

[0229] In one embodiment, an annular groove 7132 is provided on the first surface 7131 along the arrangement direction perpendicular to the caliper 12 and the reducer 50. The two ends of the sealing ring 90 are respectively provided with elastic connecting portions 91. Along the arrangement direction of the caliper 12 and the reducer 50, the two elastic connecting portions 91 extend away from the second positioning surface 722 on the outer peripheral surface of the housing 711 of the connector 71 corresponding to the first surface 7131, and are connected as one piece on the side of the housing 711 of the connector 71 corresponding to the first surface 7131 away from the second positioning surface 722.

[0230] Please refer to the above. Figures 31-33 ,in Figure 31 This is another partial external structural diagram of the connector 71 of the electromechanical braking device 100 provided in the embodiments of this application. Figure 32 This is a schematic cross-sectional view of the electromechanical braking device 100 provided in this embodiment of the application at the connector 71. Figure 33 A schematic diagram of the sealing ring 90 of the electromechanical braking device 100 provided in this application embodiment.

[0231] like Figures 31-33As shown, the sealing ring 90 includes two elastic connecting portions 91 and a body portion 92. The body portion 92 is partially housed within the annular groove 7132 and abuts against the bottom of the second positioning surface 722 and the annular groove 7132 along the arrangement direction of the caliper 12 and the reducer 50. The two elastic connecting portions 91 are spaced apart along a direction perpendicular to the arrangement direction of the caliper 12 and the reducer 50 and are connected to the body portion 92. Along the arrangement direction of the caliper 12 and the reducer 50, the elastic connecting portions 91 extend in a direction away from the second positioning surface 722 and are integrally connected to the side of the connector 71 away from the second positioning surface 722. That is, the body portion 92 is bound to the housing 711 of the connector 71 by the two elastic connecting portions 91, thereby ensuring the reliable fixation of the sealing ring 90.

[0232] In another embodiment, when the conductive sheet 81 is fixed to the second positioning surface 722, the corresponding sealing ring 90 can also be bound to the housing 721 of the sensor 72 via two elastic connecting portions 91. This application does not impose any particular limitation on this.

[0233] In one embodiment, along a direction perpendicular to the arrangement of the caliper 12 and the reducer 50, the sealing ring 90 includes an inner ring 921 and an outer ring 922. The outer circumferential surface of the inner ring 921 is spaced apart from the inner circumferential surface of the outer ring 922 and connected by a positioning portion 923. Along the arrangement direction of the caliper 12 and the reducer 50, the opposite ends of the inner ring 921 and the outer ring 922 abut against the bottom of the second positioning surface 722 and the annular groove 7132, thereby achieving a seal on the pin 82.

[0234] Understandably, the arrangement of the inner ring 921 and the outer ring 922 ensures the sealing performance of the sealing ring 90 to the pin 82, thereby guaranteeing a reliable seal between the sealing ring 90 and the pin 82. Furthermore, since the electromechanical braking device 100 of this application is installed at the wheel 1001 of a vehicle, the arrangement of the inner ring 921 and the outer ring 922 allows the sealing performance of the sealing ring 90 to match the wheel-side environment. This improves the user experience.

[0235] In one embodiment, there are multiple pins 82, conductive sheets 81, and guide holes 714. The number of pins 82, conductive sheets 81, and guide holes 714 are the same. Each pin 82 is connected to a conductive sheet 81 through a guide hole 714.

[0236] Please refer to the above. Figures 34-38 ,in Figure 34 This is a schematic diagram of the external structure of the electromechanical braking device 100 provided in this embodiment of the application on the side of the sensor 72. Figure 35 This is a schematic diagram of the external structure of the connection between the sensor 72 and the connector 71 of the electromechanical braking device 100 provided in this embodiment of the application. Figure 36This is a schematic planar structural diagram of the connection between the sensor 72 and the connector 71 of the electromechanical braking device 100 provided in this embodiment of the application. Figure 37 This is a schematic cross-sectional view of the connection between the sensor 72 and the connector 71 of the electromechanical braking device 100 provided in an embodiment of this application. Figure 38 This is an enlarged cross-sectional view of the connection between the sensor 72 and the connector 71 of the electromechanical braking device 100 provided in this embodiment of the application. Figure 38 for Figure 37 A schematic diagram of the cross-sectional structure formed by cutting along section line L.

[0237] like Figures 37-38 As shown, along a direction perpendicular to the caliper 12 and the reducer 50, the pins 82 are arranged at intervals, and each pin 82 is in contact with a conductive plate 81 through a guide hole 714. The spaced-apart guide holes 714 also limit the distance between the ends of the pins 82 facing the first positioning surface 712, preventing short circuits caused by contact under external vibration. This ensures reliable communication between the sensor 72 and the connector 71.

[0238] In one embodiment, the second positioning surface 722 includes a limiting block 724, which includes a plurality of limiting holes 7241. The number of limiting holes 7241 is the same as the number of pins 82. Each limiting hole 7241 is aligned with a guide hole 714. Each pin 82 sequentially abuts against a conductive sheet 81 through a limiting hole 7241 and a guide hole 714. The diameter of the limiting hole 7241 is equal to the diameter of the pin 82 housed within it, along the arrangement direction perpendicular to the caliper 12 and the reducer 50.

[0239] Please refer to the above. Figure 39 This is another enlarged cross-sectional view of the connection between the sensor 72 and the connector 71 of the electromechanical braking device 100 provided in the embodiment of this application.

[0240] like Figure 39 As shown, along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the wall of the limiting hole 7241 contacts the outer peripheral surface of the pin 82. The limiting hole 7241 is used to limit the relative position of each pin 82, so as to avoid the influence of the installation process on the spacing between the ends of each pin 82 facing the first positioning surface 712 during the installation of each pin 82 of the sensor 72 of the electromechanical braking device 100 of this application, thereby limiting the relative position of each pin 82 and ensuring that each pin 82 can abut against the conductive sheet 81 through the guide hole 714.

[0241] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the two surfaces of the pin 82 and the conductive sheet 81 that come into contact with each other each include a metal layer.

[0242] For ease of description, the metal layer of the pin 82 is defined as the first metal layer 826, and the metal layer of the conductive sheet 81 is defined as the second metal layer 813.

[0243] Please refer to the above. Figure 40 The diagram shown is a cross-sectional view of the electromechanical braking device 100 provided in this embodiment of the application at the contact point between the pin 82 and the conductive sheet 81.

[0244] like Figure 40 As shown, the arrangement of the first metal layer 826 and the second metal layer 813 reduces the resistance of the two surfaces in contact with the pin 82 and the conductive sheet 81, facilitating the contact and conduction between the pin 82 and the conductive sheet 81. This ensures reliable conduction between the connector 71 and the sensor 72, and guarantees reliable braking of the electromechanical braking device 100 of this application.

[0245] In one embodiment, the thickness of the first metal layer 826 of the pin 82 is less than the thickness of the second metal layer 813 of the conductive sheet 81. Figure 40 In the illustration, pin 82 is elastic. During the operation of the electromechanical braking device 100 of this application, pin 82 can reduce the wear of the first metal layer 826 caused by external vibrations by utilizing its own elasticity. The second metal layer 813 with a relatively large thickness is provided on the conductive sheet 81, which can improve the wear resistance of the conductive sheet 81, thereby ensuring reliable conductivity between pin 82 and conductive sheet 81. This ensures reliable conductivity between connector 71 and sensor 72, and guarantees reliable braking of the electromechanical braking device 100 of this application.

[0246] In another embodiment, the thickness of the first metal layer 826 of the pin 82 is less than the thickness of the second metal layer 813 of the conductive sheet 81. When the conductive sheet 81 is elastic, the thicker second metal layer 813 can also prevent the second metal layer 813 from breaking during the elastic deformation of the conductive sheet 81, thereby ensuring reliable conduction between the pin 82 and the conductive sheet 81. This ensures reliable conduction between the connector 71 and the sensor 72, and ensures reliable braking of the electromechanical braking device 100 of this application.

[0247] In one embodiment, the thickness of the first metal layer 826 of the pin 82 is equal to the thickness of the second metal layer 813 of the conductive sheet 81, which facilitates the preparation of the metal layers on the two surfaces of the pin 82 and the conductive sheet 81 that come into contact with each other.

[0248] In one embodiment, at least one of the first metal layer 826 and the second metal layer 813 comprises gold.

[0249] In one embodiment, the caliper 12, gear set 52 and circuit board 60 are arranged sequentially at intervals along the arrangement direction of the caliper 12 and reducer 50, and the planar direction of the circuit board 60 is perpendicular to the arrangement direction of the caliper 12 and reducer 50.

[0250] Please refer to the above. Figure 41 The diagram shows a partial cross-sectional view of the electromechanical braking device 100 provided in this embodiment of the application on one side of the reducer 50.

[0251] like Figure 41 As shown, the thickness direction of the circuit board 60 is parallel to the arrangement direction of the caliper 12 and the reducer 50, so as to reduce the space occupied by the circuit board 60 along the arrangement direction of the caliper 12 and the reducer 50, which facilitates the miniaturization of the electromechanical braking device 100 of this application.

[0252] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the projection of the connector 71 on the circuit board 60 is spaced apart from the projection of the gear set 52 on the circuit board 60. One end of the connector 71 is electrically connected to the sensor 72 through a conductive sheet 81 or a pin 82, and the other end of the connector 71 extends toward the circuit board 60 along the arrangement direction parallel to the caliper 12 and the reducer 50 and is connected to the circuit board 60.

[0253] Please refer to the above. Figure 42 The diagram shown is another partial cross-sectional view of the electromechanical braking device 100 provided in this embodiment of the application on one side of the reducer 50.

[0254] like Figure 42 As shown, one end of connector 71 is clamped between caliper 12 and housing 51 of reducer 50 for electrical connection to sensor 72. The other end of connector 71 extends into housing 51 of reducer 50 along the arrangement direction of caliper 12 and reducer 50 to communicate with circuit board 60. Specifically, connector 71 includes a first connecting end 715 and a second connecting end 716. The first connecting end 715 is clamped between caliper 12 and housing 51 of reducer 50, and a conductive sheet 81 is fixed to the first positioning surface 712 of sensor 72 on the first connecting end 715, and is electrically connected to sensor 72 through pin 82. The second connecting end 716 is housed in housing 51 of reducer 50 and fixed to the surface of circuit board 60 facing gear set 52.

[0255] In this embodiment, the projections of the first connecting end 715 and the second connecting end 716 on the circuit board 60 are spaced apart from the projections of the gear set 52 on the circuit board 60. That is, the gear set 52 is used to avoid connection between the first connecting end 715 and the second connecting end 716. In one embodiment, in Figure 42In the illustrated figure, the first connection end 715 and the second connection end 716 are connected by a flexible line 717. In this embodiment, the second connection end 716 of the connector 71 and the flexible line 717 are housed within the housing 51 of the reducer 50 to reduce the influence of external impurities on the connector 71 and ensure reliable communication between the sensor 72 and the circuit board 60.

[0256] In another embodiment, the opposite ends of the first connecting end 715 and the second connecting end 716 can extend relative to each other along the arrangement direction of the caliper 12 and the reducer 50, such that one of the first connecting end 715 and the second connecting end 716 extends into the other of the first connecting end 715 and the second connecting end 716, and is connected to the internal circuitry of the other of the first connecting end 715 and the second connecting end 716. This achieves the connection between the first connecting end 715 and the second connecting end 716. Correspondingly, the second connecting end 716, and the connection point between the first connecting end 715 and the second connecting end 716, are housed within the housing 51 of the reducer 50 to reduce the influence of external impurities on the connector 71 and ensure reliable connection between the sensor 72 and the circuit board 60.

[0257] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the projection of the connector 71 on the circuit board 60 coincides with the projection of the gear set 52 on the circuit board 60. One end of the connector 71 is electrically connected to the sensor 72 through a conductive sheet 81 or a pin 82. The other end of the connector 71 extends into the housing 51 of the reducer 50 and extends toward the circuit board 60.

[0258] Please refer to the above. Figure 43 and Figure 44 ,in Figure 43 This is a schematic diagram of the external structure of the electromechanical braking device 100 provided in this embodiment of the application on one side of the reducer 50. Figure 44 This is an enlarged structural diagram of the electromechanical braking device 100 provided in the embodiments of this application on one side of the reducer 50.

[0259] like Figure 43 and Figure 44As shown, along the arrangement direction of the caliper 12 and the reducer 50, the projections of the first connecting end 715 and the second connecting end 716 on the circuit board 60 partially coincide with the projection of the gear set 52 on the circuit board 60. That is, the gear set 52 is used to prevent direct connection between the first connecting end 715 and the second connecting end 716. In one embodiment, the first connecting end 715 extends to the outside of the gear set 52 along a direction perpendicular to the arrangement direction of the caliper 12 and the reducer 50, and is connected to the second connecting end 716 via a flexible line 717. In this embodiment, the second connecting end 716 of the connector 71 and the flexible line 717 are housed within the housing 51 of the reducer 50 to reduce the influence of external impurities on the connector 71 and ensure reliable communication between the sensor 72 and the circuit board 60.

[0260] In another embodiment, the first connecting end 715 extends to the outside of the gear set 52 along a direction perpendicular to the arrangement of the caliper 12 and the reducer 50, and the second connecting end 716 extends to the outside of the gear set 52 along a direction perpendicular to the arrangement of the caliper 12 and the reducer 50, and is partially aligned with the first connecting end 715. Along the arrangement direction of the caliper 12 and the reducer 50, the partially aligned structures of the first connecting end 715 and the second connecting end 716 extend towards each other and interlock for conduction. This achieves conduction between the sensor 72 and the circuit board 60. Correspondingly, the second connecting end 716, and the connection point between the first connecting end 715 and the second connecting end 716, are housed within the housing 51 of the reducer 50 to reduce the influence of external impurities on the connector 71 and ensure reliable conduction between the sensor 72 and the circuit board 60.

[0261] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the projection of the connector 71 on the circuit board 60 coincides with the projection of the gear set 52 on the circuit board 60. One end of the connector 71 is electrically connected to the sensor 72 through a conductive sheet 81 or a pin 82. The other end of the connector 71 extends out of the housing 51 of the caliper 12 and the reducer 50 and is connected to the circuit board 60 through a line outside the housing 51 of the reducer 50.

[0262] Specifically, along the arrangement direction of the caliper 12 and the reducer 50, the projections of the first connecting end 715 and the second connecting end 716 on the circuit board 60 coincide with the projection of the gear set 52 on the circuit board 60. That is, the gear set 52 is used to prevent direct connection between the first connecting end 715 and the second connecting end 716. In one embodiment, the first connecting end 715 extends beyond the reducer 50 and the caliper 12 along a direction perpendicular to the arrangement direction of the caliper 12 and the reducer 50, and is connected to the circuit board 60 via a flexible line 717 around the outer surface of the housing 51 of the reducer 50, then extends into the housing 51 of the reducer 50 and is connected to the second connecting end 716. In this embodiment, the flexible line 717 is located outside the housing 51 of the reducer 50 to reduce the space occupied by the connector 71 within the housing 51 of the reducer 50, facilitating the miniaturization of the electromechanical braking device 100 of this application.

[0263] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the housing 51 of the caliper 12 and the reducer 50 includes two opposing end faces, one of the two end faces including a receiving groove, one end of the connector 71 is received in the receiving groove and electrically connected to the sensor 72 via a conductive sheet 81 or a pin 82, and the other end of the connector 71 is used for electrical connection to the circuit board 60.

[0264] For ease of description, the end face of the caliper 12 facing the reducer 50 is defined as the first end face 125, and the end face of the housing 51 of the reducer 50 facing the caliper 12 is defined as the second end face 511.

[0265] Please refer to the above. Figures 45-47 ,in Figure 45 This is another cross-sectional view of the connection between the caliper 12 and the reducer 50 of the electromechanical braking device 100 provided in this embodiment of the application. Figure 46 This is a schematic diagram of the external structure of the electromechanical braking device 100 provided in this embodiment of the application on the caliper 12 side. Figure 47 This is another schematic diagram of the external structure of the electromechanical braking device 100 provided in the embodiment of this application on one side of the reducer 50.

[0266] like Figures 45-47 As shown, along the arrangement direction of the caliper 12 and the reducer 50, the first end face 125 and the second end face 511 abut against each other. The first end face 125 includes a receiving groove 126 for accommodating the first connecting end 715 of the connector 71. That is, the first connecting end 715 of the connector 71 is used to embed into the first end face 125 of the caliper 12, thereby facilitating the installation of the first connecting end 715 of the connector 71 while ensuring the dimensions of the electromechanical braking device 100 along the arrangement direction of the caliper 12 and the reducer 50, and also facilitating the miniaturization of the electromechanical braking device 100.

[0267] In one embodiment, along the arrangement direction of the caliper 12 and the reducer 50, the first end face 125 includes a first through hole 127, and the second end face 511 includes a second through hole 512. The geometric axes of the first through hole 127 and the second through hole 512 coincide and are both parallel to the arrangement direction of the caliper 12 and the reducer 50. Figures 45-47 As shown, the first through hole 127 and the second through hole 512 are used to allow the output shaft 53 of the reducer 50 to extend from the housing 51 of the reducer 50 into the receiving groove 124 of the caliper 12, and pass through the sensor 72 to be coaxially fixed with the lead screw nut 31. This realizes the transmission connection between the lead screw nut 31 and the gear set 52 of the reducer 50.

[0268] The receiving groove 126 communicates with the receiving groove 124 through the first through hole 127, the first connecting end 715 is exposed through the first through hole 127, and the pin 82 abuts against the conductive sheet 81 inside the first connecting end 715 through the first through hole 127 to conduct electricity. Figure 46 In the illustration, there are multiple connectors 71 and multiple receiving slots 126, which are spaced apart from each other. Each receiving slot 126 is used to accommodate and fix a first connection end 715 of a connector 71. That is, the sensor 72 is electrically connected to the circuit board 60 through multiple connectors 71.

[0269] In another embodiment, the first end face 125 includes a connecting hole. Along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the connecting hole and the first through hole 127 are spaced apart from each other. The connecting hole is used to connect the receiving groove 124 and the receiving groove 126. The pin 82 abuts against the conductive sheet 81 in the first connecting end 715 through the connecting hole to conduct electricity.

[0270] In one embodiment, along a direction perpendicular to the arrangement of the caliper 12 and the reducer 50, the first connecting end 715 includes a connected conductive portion 718 and an extension portion 719. The conductive portion 718 is electrically connected to the sensor 72 via a pin 82, and the positioning segment 812 of the conductive sheet 81 extends into the extension portion 719 and is electrically connected to the second connecting end 716 via internal wiring of the extension portion 719. Along the arrangement direction of the caliper 12 and the reducer 50, the opposite ends of the extension portion 719 are respectively used to abut against the bottom of the receiving groove 126 and the second end face 511.

[0271] Please refer to the above. Figure 48 and Figure 49 ,in Figure 48 This is a schematic diagram of the conductive portion 718 of the first connection end 715 of the electromechanical braking device 100 provided in an embodiment of this application. Figure 49 A schematic diagram of the structure of the extension 719 of the first connection end 715 of the electromechanical braking device 100 provided in the embodiments of this application.

[0272] like Figure 48 and Figure 49 As shown, the outer peripheral surface of the extension 719 abuts against the bottom of the receiving groove 126 and the second end face 511 to seal the conductive portion 718. This prevents external impurities from entering the receiving groove 126 through the gap between the bottom of the receiving groove 126 and the second end face 511 and contacting the pin 82 and the conductive sheet 81. This ensures reliable conductivity between the sensor 72 and the circuit board 60.

[0273] In one embodiment, along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the conductive sheet 81 includes a conductive bent section 81a and a fixed section 81b. The bent section 81a is housed within the conductive portion 718 for contacting and communicating with the pin 82. The fixed section 81b is housed within both the conductive portion 718 and the extension portion 719. Along the arrangement direction of the caliper 12 and the reducer 50, the distance between the bent section 81a and the second positioning surface 722 is smaller than the distance between the fixed section 81b and the second positioning surface 722.

[0274] Please refer to the above. Figure 50 The diagram shown is a structural schematic of the conductive sheet 81 of the electromechanical braking device 100 provided in this embodiment of the application.

[0275] like Figure 50 As shown, along the arrangement direction of the caliper 12 and the reducer 50, the bent section 81a is closer to the second positioning surface 722 than the fixed section 81b. This reduces the length of the pin 82 while ensuring proper contact and conduction between the pin 82 and the conductive plate 81. This avoids excessive offset at the contact end of the pin 82 with the conductive plate 81 during the manufacturing process of the electromechanical braking device 100 of this application. This ensures a high manufacturing yield for the electromechanical braking device 100 of this application.

[0276] exist Figure 50 In the illustration, a transition section 81c is provided between the bent section 81a and the fixed section 81b, which connects the bent section 81a and the fixed section 81b. Along the arrangement direction of the caliper 12 and the reducer 50, the surface of the conductive sheet 81 facing the second positioning surface 722 includes a protrusion 814. The protrusion 814 is located on the transition section 81c and extends to the bent section 81a and the fixed section 81b in a direction perpendicular to the arrangement direction of the caliper 12 and the reducer 50. The protrusion 814 enhances the connection strength between the bent section 81a and the fixed section 81b, preventing the conductive sheet 81 from breaking under stress during the manufacturing process of the electromechanical braking device 100 of this application, thus avoiding a circuit break. In other words, the protrusion 814 ensures reliable conductivity between the sensor 72 and the circuit board 60.

[0277] In this embodiment, along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the thickness of the extension 719 is greater than the thickness of the conduction portion 718. Figure 44 In the illustration, the height difference between the bent section 81a and the fixed section 81b along the arrangement direction of the caliper 12 and the reducer 50 makes the difference in the distance between the fixed section 81b and the bottom of the receiving groove 126 and the second end face 511 smaller, so as to ensure the sealing performance of the outer periphery of the extension 719 on the conductive sheet 81.

[0278] It is worth noting that the conductive sheet 81 to which the bending segment 81a and fixing segment 81b of the conductive sheet 81 proposed in the embodiments of this application are applied can be either elastic or rigid. However, the conductive sheet 81 to which the bending segment 811 and positioning segment 812 of the conductive sheet 81 in the above embodiments are applied is elastic. Specifically, when the conductive sheet 81 is elastic, the bending segment 811 and positioning segment 812 of the conductive sheet 81 can correspond to the bending segment 81a of the conductive sheet 81. That is, the bending segment 81a includes the bending segment 811 and the positioning segment 812.

[0279] In one embodiment, such as Figure 50 As shown, along the arrangement direction perpendicular to the caliper 12 and the reducer 50, the end of the fixed section 81b away from the bent section 81a includes a positioning groove 815. Figure 44 In the illustration, the positioning groove 815 is U-shaped and is used to fix the internal wiring of the extension 719. This enables the conductive sheet 81 to conduct electricity to the circuit board 60.

[0280] 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 device, characterized in that, The electromechanical braking device includes a caliper and a reducer that are fixedly connected. The caliper is used to house a lead screw nut, a sensor, and a friction plate. The housing of the reducer is used to house a gear set and to fix a connector. The gear set is used to drive the lead screw nut to push the friction plate to brake the brake disc. The sensor is used to detect the braking force of the friction plate. The connector is used to electrically connect a circuit board. Along the arrangement direction of the caliper and the reducer, the sensor and the connector are arranged adjacent to each other. The housing of the sensor and the housing of the connector include two opposing positioning surfaces. One of the positioning surfaces is used to fix the conductive sheet, and the other positioning surface is used to install a pin. The pin abuts against the conductive sheet. The distance between the two positioning surfaces is less than the sum of the natural length of the pin and the natural length of the conductive sheet.

2. The electromechanical braking device according to claim 1, characterized in that, The pin includes a spring and a guide rod. Along the arrangement direction of the caliper and the reducer, one end of the spring is used to abut against the guide rod, and the other end of the spring is used to abut against the housing of the sensor or the housing of the connector. When the pin abuts against the conductive sheet, the length of the spring is less than the natural length of the spring.

3. The electromechanical braking device according to claim 2, characterized in that, The pin also includes a sleeve fixed to the other positioning surface and used to house the spring and a portion of the guide rod; or... The other positioning surface includes a groove for receiving at least a portion of the spring and at least a portion of the guide rod.

4. The electromechanical braking device according to claim 3, characterized in that, The guide rod is used to embed into the other positioning surface along the arrangement direction of the caliper and the reducer and extends into the housing of the sensor or into the housing of the connector; or, Both the sleeve and the guide rod are made of metal. Along the arrangement direction perpendicular to the caliper and the reducer, the inner wall of the sleeve is used to abut against the outer wall of the guide rod. The sleeve is used to be embedded in the other positioning surface and extends into the housing of the sensor or into the housing of the connector.

5. The electromechanical braking device according to claim 1, characterized in that, Along the arrangement direction of the caliper and the reducer, the pin includes a first segment and a second segment connected together. The first segment is used to embed into the other positioning surface and extend into the housing of the sensor or into the housing of the connector. The second segment is located between the two positioning surfaces. When the pin abuts against the conductive sheet, the length of the second segment is less than the natural length of the second segment.

6. The electromechanical braking device according to claim 5, characterized in that, Along the arrangement direction of the caliper and the reducer, the pin further includes a third segment, which is connected to the first segment via the second segment; wherein, The elastic coefficients of the first segment and the third segment are respectively less than or equal to the elastic coefficient of the second segment.

7. The electromechanical braking device according to claim 1, characterized in that, The conductive sheet includes a bent section that bends toward the other positioning surface along the arrangement direction of the caliper and the reducer. When the pin abuts against the conductive sheet, the bent section deforms toward one of the positioning surfaces.

8. The electromechanical braking device according to any one of claims 1-7, characterized in that, Along the arrangement direction of the caliper and the reducer, one of the positioning surfaces is provided with a protrusion, the protrusion including a guide hole for exposing the conductive sheet and accommodating a portion of the pin.

9. The electromechanical braking device according to claim 8, characterized in that, Along the arrangement direction of the caliper and the reducer, the outer peripheral surface of the pin includes two connected segments, one of which is connected to the other positioning surface via the other segment; wherein, The diameter of one segment of the outer circumference is smaller than the diameter of the other segment of the outer circumference.

10. The electromechanical braking device according to claim 8, characterized in that, Along the arrangement direction of the caliper and the reducer, the protrusion includes a first surface facing the other positioning surface, the first surface and one of the other positioning surfaces being used to fix a sealing ring, the sealing ring being used to surround the pin and to abut against the first surface and the other of the other positioning surface.

11. The electromechanical braking device according to any one of claims 1-7, characterized in that, Along the arrangement direction of the caliper and the reducer, the two surfaces of the pin and the conductive plate that come into contact with each other each include a metal layer; wherein, The thickness of the metal layer of the pin is less than or equal to the thickness of the metal layer of the conductive sheet.

12. The electromechanical braking device according to any one of claims 1-7, characterized in that, Along the arrangement direction of the calipers and the reducer, the calipers, the gear set and the circuit board are arranged in sequence at intervals, and the plane direction of the circuit board is perpendicular to the arrangement direction of the calipers and the reducer.

13. The electromechanical braking device according to claim 12, characterized in that, Along the arrangement direction of the caliper and the reducer, the projection of the connector on the circuit board is spaced apart from the projection of the gear set on the circuit board. One end of the connector is electrically connected to the sensor through the conductive sheet or the pin, and the other end of the connector extends toward the circuit board along the arrangement direction parallel to the caliper and the reducer and is connected to the circuit board.

14. The electromechanical braking device according to claim 12, characterized in that, Along the arrangement direction of the caliper and the reducer, the projection of the connector on the circuit board coincides with the projection of the gear set on the circuit board, and one end of the connector is electrically connected to the sensor through the conductive sheet or the pin; The other end of the connector extends into the housing of the reducer and toward the circuit board, or the other end of the connector extends out of the caliper and the housing of the reducer and is connected to the circuit board through wiring outside the housing of the reducer.

15. A vehicle, characterized in that, include: Multiple wheels; Multiple electromechanical braking devices as described in any one of claims 1-14, each of the electromechanical braking devices being used to brake a wheel.

Images