Vehicle control device

Abstract

A vehicle control device (1) is provided with: a control board (30) housed in a housing (20) fixed to a base body (10); and a sensor (60) for detecting the movement of the vehicle, the sensor (60) being attached to the control board (30) in a range close to a first side surface (12) and a second side surface (13) of the base body (10) supported by the vehicle body (3). According to the structure, the influence of vibration on the sensor (60) mounted on the control substrate (30) can be effectively suppressed through a simple structure, so that the detection accuracy of the sensor (60) can be improved.

Description

Technical Field

[0001] This invention relates to a vehicle control device. Background Technology

[0002] In the prior art, vehicle control devices for controlling vehicle movement include an IMU (Inertial Measurement Unit), which has inertial measurement sensors for detecting the vehicle's acceleration and angular velocity. The IMU's detection results are used to perform various controls such as anti-lock braking control and vehicle attitude control. Furthermore, some vehicle control devices achieve the same function as inertial measurement sensors by mounting angular velocity sensors and acceleration sensors on a control unit (ECU), wherein the control unit is housed within a housing fixed to a base (e.g., see Document 1).

[0003] Existing technical documents Patent documents

[0004] Patent Document 1: Japanese Patent Publication No. 2021-88328 Summary of the Invention

[0005] The technical problem that the invention aims to solve

[0006] When an inertial measurement sensor is mounted on the control board, an elastic component is provided between the control board and the substrate to suppress the influence of vibrations caused by engine driving and vehicle movement on the sensor's detection results. However, this structure increases the number of components in the vehicle control unit.

[0007] The technical problem to be solved by the present invention is to provide a vehicle control device that can effectively suppress the impact of vibration on sensors mounted on the control board through a simple structure, thereby improving the detection accuracy of the sensors.

[0008] Technical solutions for solving technical problems

[0009] To solve the above-mentioned technical problems, the vehicle control device of the present invention has a control board and a sensor, wherein the control board is housed in a housing fixed to a base; the sensor is used to detect the movement of the vehicle, and the sensor is mounted on the control board in the range of the portion of the base supported on the vehicle body.

[0010] Invention Effects

[0011] In the vehicle control device of the present invention, the influence of vibration on the sensor mounted on the control board can be effectively suppressed through a simple structure, thereby improving the measurement accuracy of the sensor. Attached Figure Description

[0012] Figure 1 This is a side sectional view showing the vehicle control device according to an embodiment of the present invention.

[0013] Figure 2 This is a view of the housing of the vehicle control device according to the embodiment of the present invention from the end face side of the substrate.

[0014] Figure 3 This is a view of the housing of the vehicle control device according to a modified embodiment of the present invention, viewed from the end face of the substrate. Detailed Implementation

[0015] While appropriately referring to the appendix Figure 1 The embodiments of the present invention will be described in detail below.

[0016] In the following description, the vertical, horizontal, and lateral directions are provided for the purpose of explaining the vehicle control device of this embodiment, and are not intended to limit the structure of the vehicle control device of the present invention or its assembly state with the vehicle.

[0017] The vehicle control device described in this embodiment is based on a braking control device used in handlebar-driven vehicles such as automatic two-wheeled vehicles and automatic three-wheeled vehicles. However, the vehicle control device of this embodiment can also be used for braking control devices of four-wheeled vehicles and various other vehicle control devices.

[0018] like Figure 1 As shown, the vehicle control device 1 of this embodiment has a base 10, a housing 20 fixed to the base 10, and a control board 30 housed in the housing 20.

[0019] The vehicle control device 1 is connected between the master cylinder of the vehicle and the wheel brakes. It performs various controls such as anti-lock braking control and vehicle attitude control by controlling the brake fluid pressure acting on the wheel brakes.

[0020] The base 10 is a metal component formed in a generally rectangular parallelepiped shape. Brake fluid flow channels (oil passages) are formed inside the base 10. Multiple solenoid valves V, motors M, reciprocating pumps P, etc. are assembled on the base 10.

[0021] A housing 20 is mounted on an end face 11 of each surface of the base 10. A bottomed mounting hole for mounting a solenoid valve V is formed on the end face 11. The base of the solenoid valve V is inserted into the mounting hole, and the top portion of the solenoid valve V protrudes from the end face 11.

[0022] In addition, the number of solenoid valves V assembled on the base 10 varies, for example, depending on the number of wheels of the target vehicle and the control function.

[0023] A coil assembly 40 is installed in the part of the solenoid valve V that protrudes from the end face 11.

[0024] The coil assembly 40 is an electrical component that is sleeved around the solenoid valve V. The coil assembly 40 has a coil holder 41, a connection terminal 42, and a coil 43. By energizing the coil 43 of the coil assembly 40, the valve body of the solenoid valve V is driven, thereby causing the solenoid valve V to open or close.

[0025] The coil frame 41 is a cylindrical resin part (insulating component). The base of the connecting terminal 42 is embedded in the front end of the coil frame 41 by an insert molding process.

[0026] A wire constituting a coil 43 is wound on a coil holder 41. The ends of the wires of the coil 43 are wound around a connecting terminal 42, and the coil 43 and the connecting terminal 42 are electrically connected.

[0027] The coil assembly 40 is fixed to the end face 11 of the substrate 10 by an adhesive 50. That is, there is an adhesive 50 between the coil assembly 40 and the end face 11 of the substrate 10. The adhesive 50 has a sealing function and has the property of becoming an elastomer after curing. That is, the adhesive 50 cures in an elastic (cushioning) state. For example, a silicone adhesive can be used as the adhesive 50.

[0028] The housing 20 is a resin box fixed to the end face 11 of the base 10. The front surface (the surface opposite to the side of the base 10) and the rear surface (the surface on the side of the base 10) of the housing 20 are open.

[0029] The housing 20 is fixed to the end face 11 by threaded fastening, covering the solenoid valve V and the coil assembly 40.

[0030] The opening on the front side of the housing 20 is sealed by a resin cover 21. The cover 21 is fixed to the front end face of the housing 20 by welding, bonding, threading, or other methods. A control board 30 is housed inside the housing 20.

[0031] The control board 30 is a roughly rectangular board body on which electrical circuits are printed (see reference). Figure 2 An ECU (Electronic Control Unit) is an electronic control unit that has semiconductor chips and other electronic components installed on it.

[0032] The control board 30 is housed within the interior space of the housing 20 in a region opposite to the base 10. The control board 30 is arranged parallel to the end face 11 of the base 10. A coil assembly 40 is disposed between the control board 30 and the end face 11 of the base 10.

[0033] like Figure 2As shown, a control unit 31 for controlling the movement of the vehicle is provided on the control board 30. The control unit 31 controls the movement of the vehicle based on information obtained from sensors (not shown) and other devices equipped with the vehicle, and a pre-stored program. Specifically, the control unit 31 controls the energization of the coil assembly 40 and the motor M, thereby controlling the opening and closing of each solenoid valve V and the driving of the motor M.

[0034] A sensor 60 for detecting vehicle movement is mounted on the control board 30. In this embodiment, the sensor 60 is an inertial measurement sensor that detects the vehicle's acceleration and angular velocity. Furthermore, the control unit 31 includes a calculation unit 32 that calculates the detection values ​​detected by the sensor 60. Alternatively, instead of an inertial measurement sensor, the sensor 60 may be at least one of an acceleration sensor and an angular velocity sensor, or a combination of multiple such sensors.

[0035] On the control substrate 30, a plurality of connection holes are formed for the connection terminals 42 of the coil assembly 40. The control substrate 30 and the connection terminals 42 of the coil assembly 40 are electrically connected by a press-fit method.

[0036] The control board 30 is supported on the connection terminal 42 of the coil assembly 40. That is, the control board 30 is supported on the end face 11 of the base 10 via the coil assembly 40.

[0037] Additionally, on the control board 30 Figure 2 The right side region has multiple connection holes for pressing into the connection terminals 72 of the connector connection portion 70. The control board 30 and the connection terminals 72 of the connector connection portion 70 are electrically connected by a press-fit method.

[0038] A connector for an external wiring cable is connected to the connector connection portion 70. Near the connector on the control board, the temperature of the control board 30, especially the area of ​​the connector connection portion 70, rises due to the power supply to the control board 30.

[0039] On the base 10 of this embodiment, with the end face 11 facing forward ( Figure 1 The state of the end face 11 has a first side face 12 (left side face) adjacent to the left side of the end face 11, and a second side face 13 (lower surface) adjacent to the lower side of the end face 11 and the lower side of the first side face 12.

[0040] A first boundary line L1 (ridge line) is formed between the end face 11 and the first side face 12, and a second boundary line L2 (ridge line) is formed between the end face 11 and the second side face 13.

[0041] When the base 10 is mounted on a vehicle, the end face 11 faces forward and the second side face 13 is positioned on the lower side.

[0042] The base 10 is mounted to the vehicle body 3 via a bracket 2. A first support portion 12a, connected to the bracket 2, is provided on the first side 12 of the base 10, and a second support portion 13a, connected to the bracket 2, is provided on the second side 13. The first support portion 12a and the second support portion 13a are fixed to the bracket 2 by a mounting component (not shown) or directly by threaded fastening. In this way, the first side 12 and the second side 13 of the base 10 are supported to the vehicle body 3 by the bracket 2.

[0043] In the vehicle control device 1 of this embodiment, a first imaginary line L10 is provided on the first boundary line L1 and the second boundary line L2. This first imaginary line L10 connects the ends P11 and P21 on the opposite side of the first boundary line L1 and the second boundary line L2, respectively, where one end P11 of the first boundary line L1 and one end P21 of the second boundary line L2 meet. Furthermore, in a side view observed from the end face 11 side (front side) of the base 10... Figure 2 In the state of (the first boundary line L1, the second boundary line L2 and the first imaginary line L10), the sensor 60 is mounted on the control board 30 within the range A2 enclosed by the first boundary line L1, the second boundary line L2 and the first imaginary line L10.

[0044] Furthermore, in the vehicle control device 1 of this embodiment, the side view observed from the end face 11 side (front side) of the base 10 ( Figure 2 When the sensor 60 is mounted on the control board 30, the sensor 60 is mounted on the control board 30 within the range A1 enclosed by the first boundary line L1, the second boundary line L2, and the second imaginary line L20 connecting the first support portion 12a and the second support portion 13a.

[0045] On the control board 30, the range A1 for mounting the sensor 60 is the area close to where the base 10 is supported on the vehicle body 3, and away from the connector connection portion 70. That is, the range A1 is set to include the corners of the control board 30 that are closest to the first support portion 12a and the second support portion 13a.

[0046] In the vehicle control device 1 described above, the sensor 60 mounted on the control board 30 is positioned within a range A1 near the portion of the base 10 supported on the vehicle body 3. This effectively suppresses the influence of vibrations caused by engine operation and vehicle movement on the sensor 60's detection results. Therefore, in the vehicle control device 1, even without vibration damping components between the control board 30 and the base 10, the detection accuracy of the sensor 60 mounted on the control board 30 can be improved through a simplified structure.

[0047] In particular, in vehicles with handlebars such as automatic two-wheelers and automatic three-wheelers, the vehicle control device 1 is highly susceptible to the vehicle's behavior and vibrations from prime movers such as engines. Therefore, when vibrations are transmitted to the sensor 60 mounted on the control board 30, there is a risk of impairing the measurement accuracy of acceleration and angular velocity, and consequently affecting the sensor 60 itself. However, in the vehicle control device 1 of this embodiment, the influence of vibrations on the sensor 60 mounted on the control board 30 can be effectively suppressed through a simple structure, thereby improving the measurement accuracy of the sensor 60 and enhancing its vibration resistance.

[0048] In the vehicle control device 1 of this embodiment, such as Figure 1 As shown, the control substrate 30 is supported on the end face 11 of the substrate 10 by a coil assembly 40, and the coil assembly 40 is fixed to the end face 11 of the substrate 10 by an elastic adhesive 50. In this structure, the vibration transmitted from the substrate 10 to the control substrate 30 can be suppressed by the elastic adhesive 50, so the vibration is not easily transmitted to the sensor 60.

[0049] In the vehicle control device 1 of this embodiment, the sensor 60 can be used in a configuration provided with... Figure 2 The control board 30 shown includes various devices such as a computing unit, a power supply unit, and a communication unit. Therefore, compared to a case where the sensor 60 and the control board 30 are separate units, the number of components can be reduced, thereby lowering manufacturing costs. Furthermore, by using the computing unit 32 of the control unit 31 of the control board 30, processing can be performed without a communication unit, thus improving the processing speed of the sensor 60 on the detected values. This, in turn, improves the accuracy of vehicle control.

[0050] In the vehicle control device 1 of this embodiment, the sensor 60 on the control board 30 is far away from the connector connection portion 70. Therefore, when the power is on, the sensor 60 is not easily affected by the heat generated by the connector connection portion 70.

[0051] The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments and can be appropriately modified without departing from its spirit.

[0052] For example, in Figure 3 In the vehicle control device 1 shown, a first imaginary line L10 is provided on the first boundary line L1 and the second boundary line L2. The first imaginary line L10 connects the ends P11 and P21 on the opposite side of the first boundary line L1 and the second boundary line L2, respectively. Furthermore, in a side view from the end face 11 of the base 10, a sensor 60 is mounted on the control board 30 within the area A2 enclosed by the first boundary line L1, the second boundary line L2, and the first imaginary line L10.

[0053] like Figure 2 As shown, the sensor 60 in this embodiment is an inertial measurement sensor that detects both the acceleration and angular velocity of the vehicle. As a sensor mounted on the control board 30, it can also be an acceleration sensor that detects the acceleration of the vehicle or an angular velocity sensor that detects the angular velocity of the vehicle.

[0054] Explanation of reference numerals in the attached figures

[0055] 1: Vehicle control device; 2: Bracket; 3: Vehicle body; 10: Base; 11: End face; 12: First side face; 12a: First support part; 13: Second side face; 13a: Second support part; 20: Housing; 30: Control board; 31: Control unit; 32: Calculation unit; 40: Coil assembly; 41: Coil frame; 42: Connecting terminal; 43: Coil; 50: Adhesive; 60: Sensor (inertial measurement sensor); 70: Connector connection part; 72: Connecting terminal; L1: First boundary line; L2: Second boundary line; L10: First imaginary line; L20: Second imaginary line; M: Motor; P: Reciprocating pump; V: Solenoid valve.

Claims

1. A vehicle control device comprising a base, a housing, a control board, and sensors, wherein, The shell is fixed to the end face of the base; The control board is housed within the housing; The sensor is used to detect the movement of the vehicle. Its features are, The first and second sides of the substrate are supported on the vehicle body, wherein the first side is adjacent to the end face, and the second side is adjacent to both the end face and the first side. When viewed from the end face side, i.e., from the side view. The sensor is mounted on the control substrate within the area bounded by a first boundary line between the end face and the first side face, a second boundary line between the end face and the second side face, and a first imaginary line connecting the ends of the first boundary line and the ends of the second boundary line to each other.

2. The vehicle control device according to claim 1, characterized in that, A first support portion that connects to the vehicle body is provided on the first side. A second support portion connected to the vehicle body is provided on the second side.

3. The vehicle control device according to claim 2, characterized in that, When viewed from the end face side, i.e., from the side view. The sensor is mounted on the control substrate within the area enclosed by the first boundary line, the second boundary line, and the second imaginary line connecting the first support portion and the second support portion.

4. The vehicle control device according to claim 1, characterized in that, The sensor has at least one of an acceleration sensor for detecting the acceleration of the vehicle and an angular velocity sensor for detecting the angular velocity of the vehicle.

5. The vehicle control device according to claim 1, characterized in that, The sensor has at least one inertial measurement sensor for detecting the acceleration and angular velocity of the vehicle.

6. The vehicle control device according to claim 1, characterized in that, Electrical components are housed within the housing. The electrical component has connection terminals that are electrically connected to the control board. The control board is supported on the connection terminal. The electrical components are fixed to the end face of the substrate by an adhesive. The adhesive is elastic in the cured state.

7. The vehicle control device according to claim 6, characterized in that, The electrical component is a coil assembly for driving a solenoid valve assembled on the substrate. The coil assembly has a coil and the connection terminal, the connection terminal being electrically connected to the coil.

8. The vehicle control device according to claim 1, characterized in that, The base is supported on the vehicle body with the second side disposed on the lower side of the base.

9. The vehicle control device according to claim 1, characterized in that, A control unit for controlling the movement of the vehicle is provided on the control board. The control unit has a calculation unit for calculating the detection value detected by the sensor.

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