Circuit board side-arranged type electronic mechanical braking device and vehicle

Abstract

The utility model provides an electronic mechanical brake device with a side-mounted circuit board, which comprises a brake motor, a shell of the brake motor, a speed reducer and the circuit board, the speed reducer comprises an input shaft and an output shaft which are arranged in parallel, the input shaft is in transmission connection with a motor shaft of the brake motor, the output shaft is used for driving a brake, and the brake is used for braking a brake disc. The circuit board is used for fixing a control circuit of the brake motor, and the control circuit of the brake motor is used for outputting alternating current to the brake motor to drive the brake motor. The brake motor shell is used for containing a stator and a rotor of the brake motor. In the thickness direction of the circuit board, the distance between the brake motor shell and the circuit board is smaller than that between the input shaft and the circuit board, and the distance between the input shaft and the circuit board is smaller than that between the output shaft and the circuit board. By means of the arrangement, the size of the electronic mechanical braking device in the axial direction of the brake disc can be reduced, the electronic mechanical braking device can better adapt to the space of a vehicle chassis, and the operation stability of the electronic mechanical braking device is improved.

Description

Technical Field

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

[0002] With the continuous development of science and technology, the Electro-Mechanical Braking System (EMB) has gradually replaced the current traditional hydraulic braking system and has become the future development trend of the vehicle industry. However, compared with the traditional hydraulic braking system, the Electro-Mechanical Braking System requires the introduction of a larger drive mechanism. When the vehicle turns to the limit, the drive mechanism is prone to interference with the surrounding environment of the wheel. Based on this, how to reduce the size of the Electro-Mechanical Braking System in space, especially the size reduction in the wheel axis, has become an urgent problem to be solved. Utility Model Content

[0003] In a first aspect, the present application provides a circuit board side-mounted electronic mechanical brake device, comprising a brake motor, a brake motor housing, a reducer and a circuit board, wherein the reducer comprises an input shaft and an output shaft arranged in parallel, the input shaft is drivingly connected to the motor shaft of the brake motor, the output shaft is used to drive the brake, and the brake is used to brake the brake disc. The circuit board is used to fix the control circuit of the brake motor, and the control circuit of the brake motor is used to output alternating current to the brake motor to drive the brake motor. The brake motor housing is used to accommodate the stator and rotor of the brake motor. Along the thickness direction of the circuit board, the distance between the brake motor housing and the circuit board is smaller than the distance between the input shaft and the circuit board, and the distance between the input shaft and the circuit board is smaller than the distance between the output shaft and the circuit board.

[0004] In this arrangement, the circuit board and the control circuit arranged on the circuit board are placed on the same side of the brake motor and the reducer along the radial direction of the brake disc. Therefore, the size of the electronic mechanical braking device along the axial direction of the brake disc, that is, the axial direction of the brake motor, can be reduced, thereby enabling the electronic mechanical braking device to better adapt to the space of the vehicle chassis and improving the operating stability of the electronic mechanical braking device.

[0005] In a possible implementation, the thickness direction of the circuit board is perpendicular to the axial direction of the brake motor and parallel to the arrangement direction of the input shaft and the output shaft. This arrangement can reduce the size of the electronic mechanical brake device along the axial direction of the brake motor and better fit the bottom space of the vehicle.

[0006] In a possible implementation, the gear set of the reducer includes a motor gear and an output wheel, the motor gear is coaxially fixed with the input shaft, the motor gear is in driving connection with the output wheel, and the output wheel is used to drive the output shaft to rotate, wherein, along the axial direction of the brake motor, the distance between the motor gear and the stator of the brake motor is smaller than the size of the circuit board. With such an arrangement, the size of the electronic mechanical brake device along the axial direction of the brake motor can be reduced, thereby better adapting to the bottom space of the vehicle.

[0007] In one possible embodiment, the electronic mechanical braking device includes a controller housing and a reducer housing, the controller housing is used to accommodate a circuit board, and the reducer housing is used to accommodate a gear set of the reducer, wherein, along the thickness direction of the circuit board, the side of the controller housing facing the brake motor is used to fix the connection to at least one of the brake motor housing or the reducer housing.

[0008] That is to say, the controller housing can be fixedly connected to both the reducer housing and the brake motor housing, thereby improving the connection stability of the above three housings. In addition, the controller housing can be fixedly connected only to the brake motor housing, while the reducer housing is fixedly connected to the brake motor housing. In addition, the controller housing can be fixedly connected only to the reducer housing, while the brake motor housing is fixedly connected to the reducer housing.

[0009] In a possible implementation, the controller housing includes a connecting hole on one side facing the brake motor, and the connecting hole is used to pass a transmission line, and the transmission line is used to transmit the alternating current output by the control circuit to the brake motor. In this way, the control circuit and the brake motor can be electrically connected.

[0010] In a possible implementation, along the thickness direction of the circuit board, the projections of the brake motor housing and the reducer housing on the controller housing are located within the contour of the controller housing. This arrangement can reduce the size of the electronic mechanical brake device along the axial direction of the brake motor, thereby better adapting to the bottom space of the vehicle.

[0011] In a possible implementation, the other side of the controller housing away from the brake motor is used to fix the connector, which is used to connect the control circuit and the power supply, wherein along the thickness direction of the circuit board, the projection of the connector on the controller housing is located within the contour range of the controller housing. With this arrangement, the size of the electronic mechanical brake device along the axial direction of the brake motor can be reduced, thereby better adapting to the bottom space of the vehicle.

[0012] In a possible implementation, the interface of the connector is oriented away from the brake disc along the axial direction of the brake motor. This arrangement can facilitate on-site interface matching and subsequent maintenance by installers.

[0013] In a possible implementation, the electronic mechanical brake device includes a caliper, and the reducer housing includes two protrusions, which are used to fix the caliper, and the two protrusions are arranged on both sides of the output shaft. Specifically, the protrusion includes a through hole extending along the axial direction of the brake motor, and the through hole is used to penetrate a fixing member (screw, etc.), and then the protrusion is fixed to the caliper through the tightening action of the fixing member. With such an arrangement, on the one hand, the reducer housing can be fixed to the caliper, and on the other hand, the matching angle between the brake motor housing, the reducer housing, and the controller housing and the caliper can be adjusted during installation, thereby effectively avoiding interference between the electronic mechanical brake device and other components on the vehicle floor.

[0014] In a possible implementation, along the thickness direction of the circuit board, the distance between the protrusion and the controller housing is greater than or equal to the distance between the output shaft and the input shaft. With such an arrangement, the reducer housing can be stably fixed to the caliper.

[0015] In a possible implementation, along the thickness direction of the circuit board, the distance between the protrusion and the controller housing is smaller than the size of the reducer housing. With this arrangement, the reducer housing can be stably fixed to the caliper.

[0016] In a possible implementation, the caliper includes a recess along the thickness direction of the circuit board, the recess is used to accommodate the brake motor housing, and when the brake motor housing is accommodated in the recess, the distance between the recess and the output shaft along the thickness direction of the circuit board is smaller than the distance between the brake motor housing and the output shaft. With such an arrangement, the radial dimension of the electronic mechanical brake device along the brake disc can be reduced, thereby better adapting to the chassis space of the vehicle.

[0017] In a possible implementation, the brake motor housing and the reducer housing are an integrated structure. This arrangement is not only convenient for assembly and processing, but also avoids exposure of the input shaft due to the separation of the brake motor housing and the reducer housing, thereby increasing the service life of the electronic mechanical brake device.

[0018] In a possible implementation, the brake motor housing and the controller housing are an integrated structure. This arrangement can avoid the transmission line being exposed due to the separation of the brake motor housing and the controller housing, thereby increasing the service life of the electronic mechanical brake device.

[0019] In a second aspect, the present application provides a vehicle, comprising the electronic mechanical brake device and a wheel as described in any one of the first aspects, wherein the electronic mechanical brake device is used to brake a brake disc to brake the wheel. The axial direction of the input shaft, the axial direction of the output shaft, and the axial direction of the brake motor are parallel to the axial direction of the wheel, and the arrangement direction of the input shaft and the output shaft is perpendicular to the axial direction of the wheel.

[0020] In general, the electronic mechanical brake device provided in the present application significantly reduces the axial size of the brake disc, thereby better adapting to the space of the vehicle chassis and improving the application scenarios of the electronic mechanical brake device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a portion of the structure of a vehicle provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the planar structure of an electronic mechanical brake device provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the planar structure of an electronic mechanical brake device provided in an embodiment of the present application from a side perspective;

[0024] Figure 4 A schematic diagram of the appearance structure of a reducer from one side of an electronic mechanical brake device provided in an embodiment of the present application;

[0025] Figure 5 A schematic diagram of the three-dimensional structure of an electronic mechanical brake device provided in an embodiment of the present application;

[0026] Figure 6 A schematic diagram of the explosion structure of the electromechanical brake device provided in an embodiment of the present application;

[0027] Figure 7 A schematic diagram of the three-dimensional structure of the assembled electronic mechanical brake device and brake disc provided in an embodiment of the present application;

[0028] Figure 8 A schematic diagram of the exploded structure of the brake in the electromechanical brake device provided in an embodiment of the present application;

[0029] Fig. 9 A schematic diagram of the cross-sectional structure of the electronic mechanical brake device and the brake disc after assembly provided by an embodiment of the present application;

[0030] Fig.10 for Fig. 9 A partially enlarged schematic diagram of the local cross-sectional structure. DETAILED DESCRIPTION

[0031] Figure 1 Schematic diagram of a vehicle 1000 provided in an embodiment of the present application. Figure 1 As shown, the vehicle 1000 provided in the embodiment of the present application includes a wheel 1001 and an electronic mechanical brake device 100. The wheel 1001 is used to realize the function of the vehicle 1000 running on the ground, and the electronic mechanical brake device 100 is used for the wheel 1001 to control and adjust the rotation speed of the wheel 1001, thereby controlling the driving state of the vehicle 1000.

[0032] It should be noted that in Figure 1 In the illustrated embodiment, only one wheel 1001 and one electronic mechanical brake device 100 are used as an example for illustrative description. In actual application scenarios, each wheel 1001 in the vehicle 1000 may be provided with an electronic mechanical brake device 100 accordingly.

[0033] Figure 2 This is a schematic diagram of the planar structure of the electronic mechanical brake device provided in the embodiment of the present application. Figure 2 As shown, the electronic mechanical brake device 100 provided in the embodiment of the present application includes a brake motor 10, a reducer 20 and a control circuit board 30. In actual application, the electronic mechanical brake device 100 may also include a brake 40, which is not limited in the present application.

[0034] Specifically, the control circuit board 30 is used to fix the control circuit (not shown) of the brake motor 10. The control circuit of the brake motor 10 is used to output AC power to drive the brake motor 10. The brake motor 10 is used to drive and connect the brake 40 through the reducer 20, and the brake 40 is used to brake the wheel 1001 of the vehicle 1000.

[0035] Furthermore, the brake motor 10 includes a rotor 13, a stator 12 and a motor shaft 11. One end of the motor shaft 11 of the brake motor 10 extends toward the direction of the reducer 20 and is transmission-connected to the input shaft 21 of the reducer 20. The motor shaft 11 of the brake motor 10 rotates to drive the input shaft 21 to rotate synchronously, so that the brake motor 10 can input power into the reducer 20 through the input shaft 21, that is, the input shaft 21 is the power input shaft of the reducer 20.

[0036] Furthermore, the reducer 20 includes an input shaft 21 and an output shaft 22 arranged in parallel. The input shaft 21 is used for transmission connection to the motor shaft 11 of the brake motor 10, and the output shaft 22 is used for driving the brake 40, and the input shaft 21 and the output shaft 22 are transmitted through gears.

[0037] It is worth mentioning that in practical applications, the motor shaft 11 and the input shaft 21 can be integrally formed. In this way, the structural design of the connection between the motor shaft 11 and the input shaft 21 can be omitted, the integration of the electronic mechanical brake device 100 is improved, and the space occupied by the electronic mechanical brake device 100 on the chassis of the vehicle 1000 is reduced.

[0038] Continue to see Figure 2 In the electronic mechanical brake device 100 provided in this embodiment, along the axial direction of the output shaft 22 ( Figure 2 The brake 40 is arranged adjacent to the reducer 20 (direction B). In addition, the brake motor 10 and the driving brake 40 are located on the same side of the reducer 20.

[0039] Combination Figure 1 and Figure 2 The axial direction of the brake motor 10 , the axial direction of the input shaft 21 , and the axial direction of the output shaft 22 are parallel to the axial direction of the wheel 1001 , and the arrangement direction of the input shaft 21 and the output shaft 22 is perpendicular to the axial direction of the wheel 1001 .

[0040] In the embodiment of the present application, the thickness direction of the circuit board 30 ( Figure 2 The A direction in the figure is perpendicular to the axial direction of the brake motor 10 (the extension direction of the motor shaft 11) and parallel to the arrangement direction of the input shaft 21 and the output shaft 22. In other words, the brake motor 10 and the reducer 20 are arranged on the same side of the circuit board 30 along the radial direction of the brake motor 10 (i.e. the radial direction of the wheel 1001).

[0041] It is worth mentioning that, for the bottom space of the vehicle 1000, the size requirement in the axial direction of the brake motor 10 (i.e., the axial direction of the wheel 1001) is higher than the size requirement in the radial direction of the brake motor 10. Therefore, such a configuration can reduce the size of the electronic mechanical brake device 100 along the axial direction of the brake motor 10, thereby making the electronic mechanical brake device 100 adaptable to the chassis design of different vehicles 1000.

[0042] In the embodiment of the present application, along the thickness direction of the circuit board 30, the distance between the input shaft 21 in the reducer 20 and the circuit board 30 is smaller than the distance between the output shaft 22 in the reducer 20 and the circuit board 30. In conjunction with the arrangement of the reducer 20, a "U"-shaped power transmission track is formed between the brake motor 10 and the brake 40, thereby reducing the size of the electronic mechanical brake device 100 of the present application along the motor shaft 11 direction of the brake motor 10, and reasonably utilizing the radial space of the reducer 20.

[0043] Continue to see Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the planar structure of the electronic mechanical braking device 100 provided in an embodiment of the present application from a side perspective. Figure 4 This is a schematic diagram of the appearance structure of the reducer in the electronic mechanical brake device 100 provided in the embodiment of the present application from a side perspective. Figure 3 and Figure 4 As shown, the reducer 20 also includes a gear set, which includes a motor gear 23, a gear shaft 25, a planetary input gear 24, a planetary gear train 26a and an output gear 26. The motor gear 23 is fixed coaxially with the input shaft 21, the gear shaft 25 is coaxial with the output shaft 22, the planetary input gear 24 is fixed coaxially with the gear shaft 25, the planetary gear train 26a and the output gear 26 are both fixed coaxially with the output shaft 22, and the motor gear 23 is connected to the output gear 26 in a transmission manner. The axial direction of the brake motor 10, the motor gear 23 and the stator 12 of the brake motor 10 (see Figure 2 ) is smaller than the size of the circuit board 30. In this way, the size of the electronic mechanical brake device 100 along the axial direction of the brake motor 10 can be reduced, thereby better adapting to the bottom space of the vehicle 1000.

[0044] Specifically, when the motor shaft 11 rotates, the input shaft 21 connected to the motor shaft 11 and the motor gear 23 fixed to the input shaft 21 rotate synchronously. Furthermore, the motor gear 23 drives the planetary input gear 24, the planetary gear train 26a and the output gear 26 to rotate in turn, and finally drives the output shaft 22 to rotate, thereby transmitting the power of the brake motor 10 to the brake 40, so as to achieve the effect of the brake motor 10 driving the brake 40 to brake the vehicle 1000 through the reducer 20.

[0045] The reducer 20 in the electronic mechanical brake device 100 provided in the present application can not only achieve a larger speed ratio change in a smaller space through the planetary gear train 26a, but also arrange the planetary gear train 26a between the planetary input wheel 24 and the output wheel 26, so that the electronic mechanical brake device 100 can make fuller use of the side space of the wheel end of the vehicle 1000, thereby reducing the radial top space occupied by the wheel end of the vehicle 1000.

[0046] In the embodiment of the present application, the total size of the planetary input wheel 24, the planetary gear train 26a and the output wheel 26 along the axial direction of the motor shaft 11 is larger than the size of the motor gear 23, and the total size of the planetary input wheel 24, the planetary gear train 26a and the output wheel 26 along the thickness direction of the circuit board 30 is larger than the size of the motor gear 23. Based on this, the input shaft 21 and the output shaft 22 are arranged in parallel along the thickness direction of the circuit board 30, which can reduce the axial size of the brake motor 10, the brake 40 and the planetary gear train 26a.

[0047] To better understand the structure of the electronic mechanical brake device 100, please continue to refer to Figure 5 and Figure 6 .in, Figure 5 Schematic diagram of the three-dimensional structure of the electronic mechanical braking device 100 provided in an embodiment of the present application, Figure 6 The exploded structure diagram of the electronic mechanical brake device 100 provided in the embodiment of the present application is shown in FIG. Figure 5 and Figure 6 The electronic mechanical brake device 100 further includes a brake motor housing 101 for accommodating the brake motor 10, a reducer housing 201 for accommodating the reducer 20, and a controller housing 301 for accommodating the circuit board 30. The brake motor housing 101 and the reducer housing 201 are both fixedly connected to the controller housing 301. This arrangement can improve the connection stability of the above three housings.

[0048] In practical applications, along the thickness direction of the circuit board 30, the side of the controller housing 301 facing the brake motor 10 is used to fix at least one of the brake motor housing 101 and the reducer housing 201. That is to say, in addition to being fixedly connected to both the reducer housing 201 and the brake motor housing 101, the controller housing 301 can also be fixedly connected only to the brake motor housing 101, while the reducer housing 201 is fixedly connected to the brake motor housing 101. In addition, the controller housing 301 can be fixedly connected only to the reducer housing 201, while the brake motor housing 101 is fixedly connected to the reducer housing 201.

[0049] In the embodiment of the present application, the brake motor housing 101 and the reducer housing 201 are an integrated structure. Such a configuration is not only convenient for assembly and processing, but also avoids the exposure of the input shaft 21 caused by the separation of the brake motor housing 101 and the reducer housing 201, thereby increasing the service life of the electronic mechanical brake device.

[0050] In the embodiment of the present application, the controller housing 301 includes a connecting hole (not shown) on one side facing the brake motor 10, and the connecting hole is used to pass a transmission line, and the transmission line is used to transmit the alternating current output by the control circuit to the brake motor. In this way, the control circuit can be electrically connected to the brake motor 10.

[0051] In actual application, the brake motor housing 101 and the controller housing 301 may also be an integrated structure. This arrangement can avoid the transmission line being exposed due to the separation of the brake motor housing 101 and the controller housing 301, thereby increasing the service life of the electronic mechanical brake device 100.

[0052] Continue to combine Figure 5 and Figure 6 , along the thickness direction of the circuit board 30, the distance between the brake motor housing 101 and the circuit board 30 (not shown) is smaller than the distance between the input shaft 21 (not shown) and the circuit board 30. It should be noted that the distance between the brake motor housing 101 and the circuit board 30 (not shown) refers to the minimum distance between the brake motor housing 101 and the circuit board 30, and the distance between the input shaft 21 and the circuit board 30 (not shown) also refers to the minimum distance between the input shaft 21 and the circuit board 30. In this way, the size of the electronic mechanical brake device 100 along the axial direction of the brake motor 10 can be reduced, thereby better adapting to the bottom space of the vehicle 1000.

[0053] Continue to combine Figure 5 and Figure 6, along the thickness direction of the circuit board 30, the projections of the brake motor housing 101 and the reducer housing 201 on the controller housing 301 are located within the contour range of the controller housing 301. With such a configuration, the size of the electronic mechanical brake device 10 along the axial direction of the brake motor 10 can be reduced, thereby better adapting to the bottom space of the vehicle 1000. In other words, along the axial direction of the brake motor 10, the edges of the brake motor housing 101 and the reducer housing 201 do not exceed the edges of the controller housing 301.

[0054] Continue to combine Figure 5 and Figure 6 The electronic mechanical brake device 100 also includes a connector 50, which is used to connect the control circuit and the power supply on the circuit board 30, so that the power supply can supply power to the control circuit. The connector 50 is fixed to the side of the controller housing 301 away from the brake motor 10. In addition, along the thickness direction of the circuit board 30, the projection of the connector 50 on the controller housing 301 is located within the contour range of the controller housing 301. In other words, along the axial direction of the brake motor 10, the edges of the connector 50 do not exceed the edges of the controller housing 301. With such a configuration, the size of the electronic mechanical brake device 100 along the axial direction of the brake motor 10 can be reduced to better fit the bottom space of the vehicle 1000.

[0055] Combination Figure 5-Figure 7 , Figure 7 A schematic diagram of the three-dimensional structure of the electronic mechanical brake device 100 and the brake disc 60 after being assembled in an embodiment of the present application. The brake 40 also includes a caliper, which is used to clamp the brake disc 60 (not shown) of the vehicle 1000, and the caliper includes a caliper body 41 and a caliper frame 42. Among them, the caliper body 41 is fixedly connected to the reducer housing 201, and the caliper frame 42 is slidably connected to the brake disc 60 of the vehicle 1000. Specifically, the reducer housing 201 includes two protrusions 27, each of which includes a through hole 271 extending along the axial direction of the brake motor 10, and the through hole 271 is used to accommodate a fixing member 43 (screws, etc.). Correspondingly, the caliper body 41 also includes a plurality of holes 431 (for example, 4) extending along the axial direction of the brake motor 10. During installation, the fixing member 43 passes through the through hole 271 of the protrusion 27 and the hole 431 on the caliper body 41 in sequence, thereby fixing the reducer housing 201 to the caliper body 41 .

[0056] Continue to see Figure 6The output shaft 22 extends along the axial direction of the brake motor 10 and is partially exposed from the reducer housing 201. The portion of the output shaft 22 exposed from the reducer housing 201 is located on the same side of the reducer housing 201 as the brake motor 10. This arrangement not only reduces the axial dimension of the electronic mechanical brake device 100 along the brake motor 10, but also ensures a reliable connection between the reducer housing 201 and the caliper body 41. During installation, the output shaft 22 passes through the through hole 432 on the caliper body 41 and is transmission-connected with other components in the brake 40, thereby braking the vehicle 1000. The specific braking principle will be described in detail below.

[0057] In the embodiment of the present application, along the thickness direction of the circuit board 30, the distance between the protrusion 27 and the controller housing 301 is greater than or equal to the distance between the output shaft 22 and the input shaft 21. In this way, the reducer housing 201 can be stably fixed to the caliper.

[0058] In the embodiment of the present application, along the thickness direction of the circuit board 30, the distance between the protrusion 27 and the controller housing 301 is smaller than the size of the reducer housing 201. With such a configuration, the reducer housing 201 can be stably fixed to the caliper.

[0059] It is worth mentioning that during installation, the matching angles of the brake motor housing 101, the reducer housing 201 and the controller housing 301 with the caliper body 41 can also be adjusted, thereby effectively avoiding interference between the electronic mechanical brake device 100 and other components on the bottom plate of the vehicle 1000. For example, after the output shaft 22 is inserted into the through hole 432 of the caliper body 41, the output shaft 22 can rotate in the through hole 432 with its own axis as the rotation axis, thereby adaptively adjusting the matching angles of the brake motor housing 101, the reducer housing 201 and the controller housing 301 with the caliper body 41. When the angles are turned to a suitable angle, the reducer housing 201 is fixed to the caliper body 41 through the fastening action of the fixing member 43.

[0060] Continue to see Figure 6 , along the thickness direction of the circuit board, the caliper body 41 includes a recess 433, and the recess 433 is used to accommodate the brake motor housing 101. In addition, along the thickness direction of the circuit board 30, the distance between the recess 433 and the output shaft 22 (not shown) is smaller than the distance between the brake motor housing 101 and the output shaft 22. It is worth mentioning that, in addition to the recess 433, Figure 6It also includes a recess 434. As described above, since the matching angle between the brake motor housing 101 and the caliper body 41 can be adjusted during installation, when the placement position of the brake motor housing 101 is mirror-converted, the brake motor housing 101 is accommodated in the recess 434. At this time, along the thickness direction of the circuit board 30, the distance between the recess 434 and the output shaft 22 (not shown) is also smaller than the distance between the brake motor housing 101 and the output shaft 22. With such a configuration, the radial dimension of the electronic mechanical brake device 1000 along the brake disc 60 can be reduced, and the total volume of the electronic mechanical brake device 100 can be reduced.

[0061] Continue to see Figure 7 , the interface of the connector 50 is oriented away from the brake disc 60 along the axial direction of the brake motor 10. Such an arrangement can facilitate on-site interface matching and subsequent maintenance by customers.

[0062] See also Figure 8 , Figure 8 Schematic diagram of the exploded structure of the brake 40 in the electronic mechanical brake device 100 provided in the embodiment of the present application. In addition to the caliper body 41 and the caliper frame 42 mentioned above, the brake 40 includes two spring leaves 42a, the two spring leaves 42a are arranged opposite to each other, and each spring leaf 42a is fixed to the caliper frame 42 along the radial direction of the brake motor 10. The brake 40 also includes a sliding pin 42b and a rubber sleeve 42c, wherein the sliding pin 42b extends along the axial direction of the brake motor 10 and passes through the caliper frame 42, and the sliding pin 42b is further fixed to the caliper body 41 after passing through the caliper frame 42. Furthermore, the rubber sleeve 42c is sleeved on the sliding pin 42b and is located between the end of the sliding pin 42c and the caliper body 41. In this way, the caliper body 41 can be stably fixed to the brake disc 60.

[0063] Continue to see Figure 8 The brake 40 also includes a pressure sensor 44, a sensor gasket 45, a thrust bearing 46 and a ball screw assembly 47. Along the axial direction of the brake motor 10, the pressure sensor 44, the sensor gasket 45, the thrust bearing 46 and the ball screw assembly 47 are arranged away from the reducer 20 in sequence. Among them, the pressure sensor 44, the sensor gasket 45 and the thrust bearing 46 are all annular structures. During installation, the output shaft 22 will pass through the holes corresponding to the pressure sensor 44, the sensor gasket 45 and the thrust bearing 46 in sequence and connect with the ball screw assembly 47, and then transmit the power output by the brake motor 10 to the ball screw assembly 47 through the output shaft 22. When the output shaft 22 rotates, the ball screw assembly 47 is used to convert the rotational motion of the output shaft 22 into linear motion. The specific transmission principle of the ball screw assembly 47 will be described in detail below.

[0064] Continue to see Figure 8, the brake 40 also includes two friction plates 49. Along the axial direction of the brake motor 10, the distance between any one of the two friction plates 49 and the reducer housing 201 is greater than the distance between the ball screw assembly 47 and the reducer housing 201. When the brake motor 10 is working, the input shaft 21 of the reducer 20 is connected to the ball screw assembly 47 through the output shaft 22 of the reducer 20. The ball screw assembly 47 drives the friction plate 49 of the brake 40 to move along the axial direction of the brake motor 10 as the output shaft 22 rotates. The friction plate 49 is used to cooperate with the brake disc 60 to brake the wheel 1001 of the vehicle 1000. The brake disc 60 is fixedly connected to the wheel 1001 of the vehicle 1000 and rotates synchronously with the wheel 1001. That is, during the driving process of the vehicle 1000, the brake disc 60 can rotate with the wheel 1001.

[0065] Continue to see Figure 8 The brake 40 also includes a dust cover 48 fixed to the ball screw assembly 47. The dust cover 48 is a wavy ring structure and is used to prevent dust from entering the ball screw assembly 47, thereby improving the operating stability of the electronic mechanical brake device 100.

[0066] Continue to see Figure 8 , the brake 40 also includes a V-shaped spring 49a. Along the axial direction of the brake motor 10, the two ends of the V-shaped spring 49a are fixedly connected to the positioning holes 49b of the two friction plates 49 respectively. In the process of the vehicle 1000 changing from a non-braking mode to a braking mode, the two friction plates 49 approach each other along the axial direction of the brake motor 10, thereby driving the V-shaped spring 49a to clamp, and the V-shaped spring 49a accumulates elastic potential energy. Correspondingly, in the process of the vehicle 1000 changing from a braking mode to a non-braking mode, the elastic potential energy accumulated in the V-shaped spring 49a is released, thereby quickly spreading the two friction plates 49, so that the two friction plates 49 move away from each other along the axial direction of the brake motor 10, reducing the friction between the friction plates 49 and the brake disc 60.

[0067] See also Fig. 9 , Fig. 9 The cross-sectional structure diagram of the electronic mechanical brake device 100 provided in the embodiment of the present application after being assembled with the brake disc 60. When the brake motor 10 is working, the brake motor 10 achieves the effect of power transmission through the reducer 20, that is, the brake motor 10 inputs power to the reducer 20 from the input shaft 21 of the reducer 20, and outputs power to the brake 40 from the output shaft 22 of the reducer 20, so as to drive the brake 40 to brake the vehicle 1000.

[0068] Continue to see Fig. 9The two friction plates 49 are arranged on opposite sides of the brake disc 60 along the thickness direction of the brake disc 60, and the friction plates 49 are transmission-connected to the reducer 20. Specifically, the caliper frame 42 is fixedly connected to the frame of the vehicle 1000, and the two friction plates 49 are slidably connected to the caliper frame 42 respectively. Under the cooperative driving of the brake motor 10 and the reducer 20, the two friction plates 49 can slide relatively toward the brake disc 60 and get close to each other, or slide away from the brake disc 60 and move away from each other.

[0069] When the brake motor 10 drives the brake 40 to brake the vehicle 1000 through the reducer 20, the reducer 20 drives the two friction plates 49 of the brake 40 to move toward each other, and the two friction plates 49 can respectively contact the two opposite end surfaces of the brake disc 60 and form friction to reduce the rotation speed of the brake disc 60. Since the brake disc 60 rotates synchronously with the wheel 1001, the reduction in the speed of the brake disc 60 will synchronously drive the wheel 1001 to reduce its speed, thereby forming a braking effect on the wheel 1001, and then the electronic mechanical brake device 100 has the function of braking the vehicle 1000.

[0070] See also Fig.10 , Fig.10 for Fig. 9 Schematic diagram of the partial structure. Among them, the ball screw assembly 47 includes a screw rod 47a and a nut 47b, the surface of the nut 47b facing the screw rod 47a includes an internal thread (not shown), and the surface of the screw rod 47a facing the nut 47b includes an external thread (not shown), and the internal thread cooperates with the external thread to achieve the connection between the screw rod 47a and the nut 47b. Furthermore, the screw rod 47a also includes a through hole 47c extending along the axial direction of the brake motor 10, and the through hole 47c is arranged opposite to the output shaft 22. During installation, after the output shaft 22 passes through the pressure sensor 44, the sensor gasket 45 and the thrust bearing 46, the output shaft 22 is inserted into the through hole 47c, thereby realizing the transmission connection between the brake motor 10 and the ball screw assembly 47. When the brake motor 10 is working, the brake motor 10 drives the output shaft 22 to rotate through the transmission action of the reducer 20, and the rotating output shaft 22 drives the screw rod 47a to rotate. The rotating screw rod 47a drives the nut 47b along the axial direction of the brake motor 10 toward the friction plate 49 through the cooperation of the above-mentioned internal thread and the above-mentioned external thread, thereby shortening the distance between the two friction plates 49.

[0071] In the present application specification, the above braking process of the vehicle 1000 is defined as the electronic mechanical brake device 100 of the present application working in the service brake mode. That is, the electronic mechanical brake device 100 working in the service brake mode can be understood as the vehicle 1000 is in the driving state, the brake motor 10 works and drives the brake 40 through the reducer 20 to brake the vehicle 1000, so that the driving speed of the vehicle 1000 is reduced or stopped.

[0072] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A circuit board side-mounted electromechanical brake device, characterized in that: The electromechanical brake device comprises a brake motor, a housing of the brake motor, a reducer and a circuit board, wherein: The reducer comprises an input shaft and an output shaft arranged in parallel, the input shaft is drivingly connected to the motor shaft of the brake motor, the output shaft is used to drive the brake, and the brake is used to brake the brake disc; The circuit board is used to fix the control circuit of the brake motor, and the control circuit of the brake motor is used to output alternating current to the brake motor to drive the brake motor; The brake motor housing is used to accommodate the stator and rotor of the brake motor; Along the thickness direction of the circuit board, the distance between the brake motor housing and the circuit board is smaller than the distance between the input shaft and the circuit board, and the distance between the input shaft and the circuit board is smaller than the distance between the output shaft and the circuit board.

2. The circuit board side-mounted electromechanical brake device according to claim 1, characterized in that: The thickness direction of the circuit board is perpendicular to the axial direction of the brake motor and parallel to the arrangement direction of the input shaft and the output shaft.

3. The circuit board side-mounted electromechanical brake device according to claim 1, characterized in that: The gear set of the reducer includes a motor gear and an output wheel, wherein the motor gear is coaxially fixed with the input shaft, the motor gear is transmission-connected with the output wheel, and the output wheel is used to drive the output shaft to rotate, wherein: Along the axial direction of the brake motor, a distance between the motor gear and the stator of the brake motor is smaller than a size of the circuit board.

4. The circuit board side-mounted electromechanical brake device according to claim 1 or 2, characterized in that: The electronic mechanical brake device comprises a controller housing and a reducer housing, wherein the controller housing is used to accommodate the circuit board, and the reducer housing is used to accommodate the gear set of the reducer, wherein: Along the thickness direction of the circuit board, the side of the controller housing facing the brake motor is used to be fixedly connected to at least one of the brake motor housing and the reducer housing.

5. The circuit board side-mounted electromechanical brake device according to claim 4, characterized in that: The controller housing includes a communication hole on a side facing the brake motor, and the communication hole is used for passing a transmission line, and the transmission line is used for transmitting the alternating current output by the control circuit to the brake motor.

6. The circuit board side-mounted electromechanical brake device according to claim 4, characterized in that: Along the thickness direction of the circuit board, the projections of the brake motor housing and the reducer housing on the controller housing are located within the contour range of the controller housing.

7. The circuit board side-mounted electromechanical brake device according to claim 4, characterized in that: The other side of the controller housing away from the brake motor is used to fix a connector, and the connector is used to connect the control circuit with a power supply, wherein: Along the thickness direction of the circuit board, the projection of the connector on the controller housing is located within the contour range of the controller housing.

8. The circuit board side-mounted electromechanical brake device according to claim 7, characterized in that: The interface of the plug connector is oriented away from the brake disc along the axial direction of the brake motor.

9. The circuit board side-mounted electromechanical brake device according to claim 4, characterized in that: The electronic mechanical brake device comprises a caliper, and the reducer housing comprises two protrusions, which are used for fixedly connecting the caliper, and the two protrusions are arranged on both sides of the output shaft.

10. The circuit board side-mounted electromechanical brake device according to claim 9, characterized in that: Along the thickness direction of the circuit board, the distance between the protrusion and the controller housing is greater than or equal to the distance between the output shaft and the input shaft.

11. The circuit board side-mounted electromechanical brake device according to claim 9, characterized in that: Along the thickness direction of the circuit board, the distance between the protrusion and the controller housing is smaller than the size of the reducer housing.

12. The circuit board side-mounted electromechanical brake device according to claim 9, characterized in that: The caliper includes a recess along the thickness direction of the circuit board, and the recess is used to accommodate the brake motor housing. When the brake motor housing is accommodated in the recess, the distance between the recess and the output shaft along the thickness direction of the circuit board is smaller than the distance between the brake motor housing and the output shaft.

13. The circuit board side-mounted electromechanical brake device according to claim 4, characterized in that: The brake motor housing and the reducer housing are an integrated structure.

14. The circuit board side-mounted electromechanical brake device according to claim 4, characterized in that: The brake motor housing and the controller housing are an integrated structure.

15. A vehicle, characterized in that: The vehicle comprises a wheel and an electronic mechanical braking device and a wheel as claimed in any one of claims 1-3 and 5-14, wherein the electronic mechanical braking device is used to brake the brake disc to brake the wheel, wherein: The axial direction of the input shaft, the axial direction of the output shaft, and the axial direction of the brake motor are parallel to the axial direction of the wheel, and the arrangement direction of the input shaft and the output shaft is perpendicular to the axial direction of the wheel.

Images