Control device of electric brake device

Abstract

To provide a control device that is applied to an electric brake device for a left wheel and a right wheel which prevents increase in components and increase in assembling steps.SOLUTION: An electric brake device includes a motor, a reduction gear, and a linear motion converting part, and presses a pad against a disc by a load output by the linear motion converting part and brakes a wheel, wherein a control device 201 controls driving of the motor. The control device 201 includes a substrate 23, and an electronic element such as an IC 30 mounted on the substrate 23. The substrate 23 has a plurality of electric connection parts 41, 51 and 61 which are used for power supply input, output of driving power of the motor, signal communication with one or more kinds of sensors or power supply. The control devices 201 having the same specification other than wiring of at least the substrate 23 are used in common for an electric brake device for a left wheel and an electric brake for a right wheel, which are arranged so as to be bilaterally symmetric with the longitudinal axis of the vehicle.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a control device for an electric brake device.

Background Art

[0002] Conventionally, in an electric brake device for a vehicle, a control device rotates a motor shaft, and the rotation of a speed reducer connected to the motor shaft is converted into linear motion by a rotary-linear motion conversion mechanism, and the brake pad is pressed against the disk by the linear motion to brake the wheel. A configuration is known.

[0003] For example, the electric brake device disclosed in Patent Document 1 includes an electric circuit unit that controls the output generated by the motor and a mechanism unit that generates a braking force based on the output of the motor. The mechanism unit includes a motor, a speed reducer, a rotary-linear motion conversion mechanism, and the like. In addition, a thrust sensor and a temperature sensor are mounted on the mechanism unit, and each sensor signal is communicated to a lower control circuit of the electric circuit unit via wiring.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The electric brake device is provided corresponding to each wheel of the vehicle. The electric brake device for the left wheel and the electric brake device for the right wheel are formed in a symmetric shape. Therefore, two types of symmetric control devices are required, which causes an increase in parts such as bus bars and an increase in the assembly process. As a result, there is a problem that the product cost increases.

[0006] The present invention has been created in view of such points, and its object is to provide a control device applied to electric brake devices for the left wheel and the right wheel, which prevents an increase in parts and an increase in the assembly process.

Means for Solving the Problems

[0007] The present invention is a control device that controls the driving of a motor in electric brake devices (11, 12). The electric brake device includes a motor (15) that outputs torque, a speed reducer (16) that decelerates the rotation of the motor, and a linear motion conversion unit (17) that is held by a caliper (80) and converts the decelerated rotation into linear motion. The pad (88) is pressed against the disk (89) by the load output by the linear motion conversion unit to brake the wheels (91, 92).

[0008] The control device includes a substrate (23) and one or more electronic elements (30, 36) mounted on the substrate. The substrate has a plurality of electrical connection parts (41, 42, 51, 52, 61, 62) used for power input, output of driving power for the motor, and signal communication or power supply with one or more types of sensors.

[0009] For the electric brake device (11) for the left wheel (91) and the electric brake device (12) for the right wheel (92) that are arranged symmetrically with respect to the front and rear axes of the vehicle, at least the specifications other than the wiring of the substrate are commonly used.

[0010] Preferably, the electrical connection parts are either commonly used for the electric brake device for the left wheel and the electric brake device for the right wheel, or wiring to the electrical connection parts used individually is provided as selective wiring. Here, among the wirings formed in a pattern on the substrate or connected by lead wires, the wiring used in one of the electric brake devices for the left wheel or the right wheel and not used in the other electric brake device is defined as selective wiring. The control device commonly uses those with the same specifications including the wiring of the substrate for the electric brake device for the left wheel and the electric brake device for the right wheel.

[0011] In the present invention, the control devices applied to the electric brake devices for the left wheel and the right wheel are those having at least the same specifications except for the wiring on the substrate, and preferably, those having the same specifications including the wiring on the substrate are used. By unifying the specifications of the control devices, it is possible to prevent an increase in parts and an increase in the assembly process, and the manufacturing cost is reduced.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

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Figure 12

Embodiments for Carrying Out the Invention

[0013] Multiple embodiments of a control device for an electric brake device will be described with reference to the drawings. The "present embodiment" includes the following first to sixth embodiments. The electric brake device of the present embodiment mainly functions as a braking brake, but may also be used as a parking brake.

[0014] FIG. 1 shows a schematic configuration of a vehicle 90 equipped with electric brake devices 11 and 12. The left front wheel and the left rear wheel are commonly denoted by reference numeral 91, and (F) and (R) are supplemented for reference. Similarly, the right front wheel and the right rear wheel are commonly denoted by reference numeral 92, and (F) and (R) are supplemented for reference.

[0015] In the present embodiment, attention is paid to the comparison between the electric brake device 11 for the left wheel and the electric brake device 12 for the right wheel at the left and right front wheels and the left and right rear wheels, respectively. The electric brake device 11 for the left wheel and the electric brake device 12 for the right wheel are arranged symmetrically with respect to the front-rear axis X of the vehicle. The electric brake devices 11 and 12 convert the rotational motion of the motor 15 into linear motion, and press the pad 88 against the disk 89 by the linear load to brake each wheel 91 and 92. The control device 20 is integrally configured with the electric brake devices 11 and 12, and controls the drive of the motor 15 according to a braking signal commanded from a higher-level vehicle control device 95. The detailed configuration of the electric brake devices 11 and 12 will be described later with reference to FIG. 5.

[0016] Note that there is a difference in the required braking force between the driving wheel and the driven wheel between the front wheel and the rear wheel. For example, in a front-wheel drive vehicle, the required braking force of the electric brake device for the front wheel is larger, so the motor output is set higher than that of the electric brake device for the rear wheel. Therefore, the specifications of the electric brake devices for the front wheel and the rear wheel are not necessarily the same, but in the present embodiment, this point is not considered, and attention is paid solely to the symmetry in the shape surface between the left wheel and the right wheel. The electric brake devices denoted by the reference numerals "11, 12" are interpreted as any set of the left-wheel and right-wheel for the front wheel or the left-wheel and right-wheel for the rear wheel. Although the arrow symbols III and IV indicating the viewing directions of FIGS. 3 and 4 are illustrated on the front-wheel side as an example, they may be shown on the rear-wheel side.

[0017] Referring to FIG. 2, the problems in the control devices 209L and 209R of the electric brake device according to the comparative example will be described. The comparative example is a schematic representation of the form disclosed in FIG. 13(d) of Patent Document 1 (Japanese Patent Application Laid-Open No. 2008-095909). The control device 209L for the left wheel and the control device 209R for the right wheel include substrates 29L and 29R that are symmetrical with each other. On each of the substrates 29L and 29R, terminal portions 59, a temperature sensor interface 69T, a thrust sensor interface 69F, etc. are arranged symmetrically. Note that the thrust sensor in the comparative example corresponds to the load sensor 18 (see FIG. 5) in the present embodiment.

[0018] Thus, two types of control devices 209L and 209R having a symmetrical shape for the left and right wheels are required, which leads to an increase in parts such as bus bars and an increase in the assembly process. As a result, there is a problem that the product cost increases. To address this issue, in the present embodiment, in the control device applied to the electric brake devices for the left and right wheels, the aim is to prevent an increase in parts and the assembly process. Hereinafter, the specific configurations of each embodiment will be described in order. The reference numerals of the control devices in each embodiment are assigned the embodiment number in the third digit following "20".

[0019] (First Embodiment) Referring to FIGS. 3 to 5, the control device 201 of the electric brake devices 11 and 12 according to the first embodiment will be described. FIG. 3 shows the electric brake device 11 for the left wheel, and FIG. 4 shows the electric brake device 12 for the right wheel, each viewed in the III and IV directions of FIG. 1. Specifically, in a state where the heat dissipation plate 25 shown in FIG. 5 is removed, the IC 30 and each electrical connection portion are shown as a part of the mounting form of the substrate 23. The illustration of other electronic elements and the like is omitted.

[0020] Referring to the cross-sectional schematic diagram shown in FIG. 5, the configuration of the electric brake device will be described. In FIG. 5, the reference numerals of the elements of the left-wheel electric brake device 11 are described as representatives, but the configuration of the right-wheel electric brake device 12 is the same. The electric brake device 11 includes a motor 15 that outputs torque, a speed reducer 16 that decelerates the rotation of the motor 15, and a linear motion conversion unit 17 that is held by the caliper 80 and converts the rotation decelerated by the speed reducer 16 into linear motion. The electric brake device 11 presses the pad 88 against the disk 89 by the load output by the linear motion conversion unit 17. The control device 201 controls the driving of the motor 15 in the electric brake device 11.

[0021] The motor 15 is composed of, for example, a three-phase brushless motor. The driving power of the motor 15 is supplied from the inverter circuit 35 mounted on the substrate 23 via the three-phase motor terminals 510. A rotation sensor 38 for detecting the rotation of the motor 15 based on the change in the magnetic field of the magnet 156 provided at the tip of the motor shaft 155 may be provided as an option.

[0022] The speed reducer 16 has a first pinion gear 161, a first wheel gear 162, a second pinion gear 163, and a second wheel gear 164 in the order in which rotation is transmitted. The first pinion gear 161 is connected to the motor shaft 155, and the second wheel gear 164 is connected to the ball screw 175 of the linear motion conversion unit 17. The rotation of the motor shaft 155 is decelerated by the speed reducer 16 and transmitted to the ball screw 175.

[0023] In the linear motion conversion unit 17, the rotation of the ball screw 175 causes the nut 176 to linearly move in the axial direction. As the nut 176 linearly moves, the pad 88 is pressed against the disk 89 via the piston 87. The load sensor 18 detects the load output by the linear motion conversion unit 17. The supply of the power supply voltage from the IC 30 on the substrate 23 to the load sensor 18 and the communication of the sensor signal from the load sensor 18 to the IC 30 are performed via a plurality of sensor terminals 610.

[0024] The control device 201 is provided on the side opposite to the motor 15 and the linear motion conversion unit 17 with respect to the speed reducer 16. The control device 201 includes a substrate 23 and one or more electronic elements mounted on the substrate 23. The electronic elements include an IC 30 that constitutes a control circuit, and a plurality of switching elements (for example, MOSFETs) 36 that constitute an inverter circuit 35, etc.

[0025] A power cable is connected to the connector 24 of the control device 201 from the in - vehicle battery. DC power is supplied from the connector 24 to the substrate 23 via a power supply terminal 410 composed of a positive electrode (+) terminal and a negative electrode (-) terminal. A heat - radiating plate 25 for releasing the heat generated by the elements is provided on the surface of the control device 201 opposite to the speed reducer 16.

[0026] As shown in FIGS. 3 and 4, the substrate 23 has a power supply terminal connection part 41, a motor terminal connection part 51, and sensor terminal connection parts 61 and 62 as a plurality of electrical connection parts. Here, the power supply terminal connection part 41 and the motor terminal connection part 51 that are commonly used by the left - wheel electric brake device 11 and the right - wheel electric brake device 12 are both indicated by hatched circles.

[0027] The positive and negative power supply terminals 410 are connected to the power supply terminal connection part 41, which is used for power input to the control device 201. Hereinafter, the connection point between the substrate 23 corresponding to one terminal is referred to as a "connection point". The power supply terminal connection part 41 includes a positive - electrode connection point and a negative - electrode connection point. The positive - electrode connection point is connected to the power line of the circuit, and the negative - electrode connection point is connected to the ground line of the circuit.

[0028] As shown in FIGS. 3 and 4, three motor terminals 510 corresponding to the U - phase, V - phase, and W - phase are connected to the motor terminal connection part 51, which is used for outputting the driving power of the motor 15. The illustration of the inverter circuit 35 (including six switching elements 36) is omitted in FIGS. 3 and 4. The motor terminal connection part 51 includes three connection points, and wirings are provided from between the upper - arm element and the lower - arm element of each phase to each connection point.

[0029] Regarding the sensor terminal connection parts 61 and 62, the sensor terminal connection part 61 indicated by the hatched circle in FIG. 3 means the connection part used in the left-wheel electric brake device 11. The sensor terminal connection part 62 indicated by the white circle in FIG. 3 means the connection part not used in the left-wheel electric brake device 11. On the other hand, the sensor terminal connection part 62 indicated by the hatched circle in FIG. 4 means the connection part used in the right-wheel electric brake device 12. The sensor terminal connection part 61 indicated by the white circle in FIG. 4 means the connection part not used in the right-wheel electric brake device 12.

[0030] In the left-wheel electric brake device 11, a plurality of sensor terminals 610 are connected to the sensor terminal connection part 61, and it is used for signal communication or power supply with the load sensor 18. As shown in FIG. 3, the sensor terminal connection part 61 includes three connection points. These three correspond to the power supply voltage line and the ground line for supplying DC power to the load sensor 18, and the communication line for communicating the sensor signal detected by the load sensor 18 to the IC30. In the right-wheel electric brake device 12, the sensor terminal connection part 62 is used for signal communication or power supply with the load sensor 18.

[0031] In other embodiments, the sensor terminal connection part 62 in the left-wheel electric brake device 11 and the sensor terminal connection part 61 in the right-wheel electric brake device 12 may be used as connection parts for signal communication or power supply with sensors other than the load sensor 18 (for example, a temperature sensor or a rotation sensor). In the configuration where it is also connected to sensors other than the load sensor 18 like this, the sensor terminal connection parts 61 and 62 become "electrical connection parts used for signal communication or power supply with one or more types of sensors".

[0032] As shown in FIG. 5, FIGS. 3 and 4 show the shape projected onto a virtual plane parallel to the substrate 23 of the control device 201. Hereinafter, in the description of the shape of the control device of each embodiment, it shall mean the shape projected onto a virtual plane parallel to the substrate 23. This virtual plane is orthogonal to the rotation axis of the motor 15 and the linear motion axis of the linear motion conversion part 17, and is parallel to the contact surface between the pad 88 and the disk 89.

[0033] In FIGS. 3 and 4, the caliper 80 can be seen behind the control device 201. In this example, the electric brake devices 11 and 12 provided integrally with the control device 201 are attached to two attachment holes 81 and 82 of the caliper 80 with bolts. For example, in the electric brake device 11 for the left wheel, a straight line passing through the midpoint M of the line segment Q connecting the two attachment holes 81 and perpendicular to the line segment Q is taken as the symmetry axis P. Similarly, for the electric brake device 12 for the right wheel, the symmetry axis P passes through the midpoint M of the line segment Q connecting the two attachment holes 82 and is perpendicular to the line segment Q.

[0034] The outer shape of the control device 201 is symmetric with respect to the symmetry axis P. When the control device 201 shown in FIG. 3 is rotated by a predetermined angle (about 150° counterclockwise in this example), it overlaps with the control device 201 shown in FIG. 4. Also, as the "at least part of the electrical connection parts", the sensor terminal connection parts 61 and 62 are arranged symmetrically with respect to the symmetry axis P. Further, the power supply terminal connection part 41 is arranged symmetrically with respect to the symmetry axis P alone.

[0035] Next, the wirings to the electrical connection parts 41, 51, 61, and 62 on the substrate 23 are typically formed in a pattern on the substrate 23, but may be connected by lead wires. Here, among the wirings of the substrate 23, the wiring used in one of the electric brake devices for the left wheel or the right wheel and not used in the other electric brake device is defined as "selective wiring".

[0036] In the first embodiment, the power supply terminal connection part 41 and the motor terminal connection part 51 are commonly used in the electric brake device 11 for the left wheel and the electric brake device 12 for the right wheel. Also, the sensor terminal connection parts 61 and 62 are individually used in the electric brake device 11 for the left wheel and the electric brake device 12 for the right wheel. The wirings between the sensor terminal connection parts 61, 62 and the IC 30 are provided as selective wirings 71 and 72. As shown in FIGS. 3 and 4, the selective wiring 71 connects the three connection points of the sensor terminal connection part 61 and the pins a, b, and c of the IC 30. The selective wiring 72 connects the three connection points of the sensor terminal connection part 62 and the pins d, e, and f of the IC 30.

[0037] With such a configuration, the control device 201 commonly uses components with the same specifications including the wiring of the substrate 23 for the left-wheel electric brake device 11 and the right-wheel electric brake device 12. By unifying the specifications of the control device, an increase in parts and an increase in the assembly process can be prevented, and the manufacturing cost can be reduced.

[0038] As described above, there may also be a configuration in which the sensor terminal connection portion 62 in the left-wheel electric brake device 11 and the sensor terminal connection portion 61 in the right-wheel electric brake device 12 are used as connection portions with sensors other than the load sensor 18. In that case, the definition of "selective wiring" is interpreted as "wiring that is used for the load sensor 18 in one of the left-wheel or right-wheel electric brake devices and not used for the load sensor 18 in the other electric brake device".

[0039] Next, the control devices 202 to 206 of the second to sixth embodiments, which have some different configurations from the control device 201 of the first embodiment, will be described in order. In each embodiment, the same reference numerals are given to the configurations that are substantially the same as those of the first embodiment, and the description thereof is omitted. The configurations other than those described in each embodiment are the same as those of the first embodiment.

[0040] In the drawings of each embodiment, the electrical connection portions used in the illustrated electric brake device for the left wheel or the right wheel are indicated by hatched circles, and the electrical connection portions not used in the illustrated electric brake device are indicated by white circles. In the second, fourth, and fifth embodiments, only the control device of the left-wheel electric brake device 11 is illustrated, and the illustration of the control device of the right-wheel electric brake device 12 is omitted.

[0041] For the control devices 202 to 205 of the second to fifth embodiments, components with the same specifications including the wiring of the substrate 23 are commonly used for the left-wheel electric brake device 11 and the right-wheel electric brake device 12. Similar to the first embodiment, by unifying the specifications of the control device, an increase in parts and an increase in the assembly process can be prevented, and the manufacturing cost can be reduced.

[0042] (Second Embodiment) Fig. 6 shows the control device 202 of the left-wheel electric brake device 11 according to the second embodiment. Similar to the first embodiment, in the control device 202 of the second embodiment, the wirings between the sensor terminal connection parts 61 and 62 and the IC 30, which are individually used in the left-wheel electric brake device 11 and the right-wheel electric brake device 12, are provided as selective wirings. However, the pins of the IC 30 used for the selective wirings are common for the left wheel and the right wheel in the second embodiment, while they are different for the left wheel and the right wheel in the first embodiment.

[0043] That is, the wiring 71 to the sensor terminal connection part 61 used in the left-wheel electric brake device 11 and the wiring 72 to the sensor terminal connection part 62 used in the right-wheel electric brake device 12 are commonly connected to the pins d, e, and f of the IC 30. For example, the wirings can be crossed by forming patterns on different layers of a multilayer substrate.

[0044] Since the pins of the IC 30 are also used for other purposes not mentioned in the description of this embodiment, the number of pins available for sensor terminals is limited. In the second embodiment, the number of unused pins of the IC 30 can be reduced, and the pins can be effectively used. Therefore, the number of pins available for other purposes can be increased. Alternatively, a small IC with a small number of pins can be selected to reduce the occupied space of the substrate.

[0045] (Third Embodiment) Fig. 7 shows the power terminal side portion of the control device 203 of the left-wheel electric brake device 11 and the right-wheel electric brake device 12 according to the third embodiment. Fig. 8 shows the connector 24 viewed from the VIII direction in Fig. 7. In the control device 203 of the third embodiment, a pair of power terminal connection parts 41 and 42, which are selectively used for the left wheel and the right wheel, are provided on the substrate 23. The pair of power terminal connection parts 41 and 42 are arranged symmetrically with respect to the symmetry axis P. Also, a two-port connector 24 is provided corresponding to the pair of power terminal connection parts 41 and 42.

[0046] In the left-wheel electric brake device 11, the power terminal connection part 41 is used, and the power terminal connection part 42 is not used. In the right-wheel electric brake device 12, the power terminal connection part 42 is used, and the power terminal connection part 41 is not used. The positive (+) terminal connection points of the power terminal connection parts 41 and 42 are connected in parallel to the power line of the circuit, and the negative (-) terminal connection points of the power terminal connection parts 41 and 42 are connected in parallel to the ground line of the circuit. Depending on the routing of the power cable, this configuration facilitates the mounting operation to the connector 24 for both the left wheel and the right wheel.

[0047] (Fourth Embodiment) FIG. 9 shows the control device 204 of the left-wheel electric brake device 11 according to the fourth embodiment. In the control device 204 of the fourth embodiment, a pair of motor terminal connection parts 51 and 52 that are selectively used for the left wheel and the right wheel are provided on the substrate 23. The pair of motor terminal connection parts 51 and 52 are arranged symmetrically with respect to the symmetry axis P.

[0048] In the left-wheel electric brake device 11, the motor terminal connection part 51 is used, and the motor terminal connection part 52 is not used. In the right-wheel electric brake device 12, the motor terminal connection part 52 is used, and the motor terminal connection part 51 is not used. Wiring from between the upper arm element and the lower arm element of each phase of the inverter circuit 35 to each connection point to the motor terminal connection part 51 and the motor terminal connection part 52 is provided in parallel as selective wiring. Depending on the form of the bus bar or the like of each phase, this configuration can simplify the wiring path or shorten the wiring length.

[0049] (Fifth Embodiment) FIG. 10 shows the control device 205 of the left-wheel electric brake device 11 according to the fifth embodiment. In the control device 205 of the fifth embodiment, the sensor terminal connection part 61 and the sensor terminal connection part 62 are arranged symmetrically with respect to the symmetry axis P at positions closer to the symmetry axis P.

[0050] Furthermore, in this example, one of the three connection points constituting each of the connection parts 61 and 62 is arranged on the symmetry axis P and is commonly used by the electric brake devices 11 and 12 for the left and right wheels. Therefore, the total number of connection points constituting the pair of connection parts 61 and 62 and the total number of selection wirings wired from the IC 30 to the pair of connection parts 61 and 62 can be reduced from six to five.

[0051] (Sixth Embodiment) FIGS. 11 and 12 show the control device 206 of the electric brake device 11 for the left wheel and the electric brake device 12 for the right wheel according to the sixth embodiment. In the control device 206 of the sixth embodiment, the wiring between the IC 30 and the sensor terminal connection parts 61 and 62 is not provided as selection wiring. Instead of forming a common pattern on the substrate 23 in advance, after being separated into those for the left wheel and those for the right wheel during manufacturing, the IC 30 and the sensor terminal connection parts 61 and 62 are connected by, for example, lead wires.

[0052] That is, in the electric brake device 11 for the left wheel, the IC 30 and the sensor terminal connection part 61 are wired, and the IC 30 and the sensor terminal connection part 62 are not wired. On the other hand, in the electric brake device 12 for the right wheel, the IC 30 and the sensor terminal connection part 62 are wired, and the IC 30 and the sensor terminal connection part 61 are not wired.

[0053] The control device 206 of the sixth embodiment commonly uses those having the same specifications other than the wiring of the substrate 23 for the electric brake device 11 for the left wheel and the electric brake device 12 for the right wheel. Even with this configuration, by unifying the specifications of the control device 206 as a pre-wiring sub-assembly between the IC 30 and the sensor terminal connection parts 61 and 62, an increase in parts and an increase in the assembly process can be prevented.

[0054] (Other Embodiments) The outer shape obtained by projecting the control device 20 onto a virtual plane parallel to the substrate 23 may be an asymmetric shape. In this case, depending on the positions of the protrusions and the like appearing on the outer shape of the control device 20, the surrounding spaces in the left and right electric brake devices 11 and 12 become asymmetric, but this is not a problem when there is a margin in the space. Thereby, the degree of design freedom is improved.

[0055] As described above, the present invention is not limited to such embodiments, and can be implemented in various forms without departing from the gist thereof.

Explanation of Reference Numerals

[0056] 11 ··· Electric brake device for left wheel, 12 ··· Electric brake device for right wheel 15 ··· Motor, 16 ··· Reducer, 17 ··· Linear motion conversion unit 20 (201 to 206) ··· Control device 23 ··· Substrate 30 ··· IC (electronic component), 36 ··· Switching element (electronic component) 41, 42 ··· Power terminal connection part (electrical connection part) 51, 52 ··· Motor terminal connection part (electrical connection part) 61, 62 ··· Sensor terminal connection part (electrical connection part) 80 ··· Caliper, 88 ··· Pad, 89 ··· Disk 91 ··· Left wheel (wheel), 92 ··· Right wheel (wheel)

Claims

1. An electric brake device (11, 12) including a motor (15) that outputs torque, a speed reducer (16) that decelerates the rotation of the motor, and a linear motion conversion unit (17) that is held by a caliper (80) and converts the decelerated rotation by the speed reducer into linear motion, and pressing a pad (88) against a disk (89) by the load output by the linear motion conversion unit to brake wheels (91, 92), wherein the control device controls the drive of the motor, a substrate (23), and one or more electronic elements (30, 36) mounted on the substrate, the substrate having a plurality of electrical connection parts (41, 42, 51, 52, 61, 62) used for power supply input, output of drive power of the motor, and signal communication or power supply to one or more types of sensors, a control device for an electric brake device in which at least specifications other than the wiring of the substrate are commonly used for the electric brake device (11) for the left wheel (91) and the electric brake device (12) for the right wheel (92) that are symmetrically arranged with respect to the front and rear axes of the vehicle.

2. Among the wirings formed in a pattern on the substrate or connected by lead wires, if a wiring used in one of the electric brake devices for the left wheel or the right wheel and not used in the other electric brake device is defined as a selection wiring, each of the electrical connection parts is commonly used in the electric brake device for the left wheel and the electric brake device for the right wheel, or wiring to the electrical connection parts used individually is provided as the selection wiring, The control device for an electric brake device according to claim 1, wherein specifications including the wiring of the substrate are commonly used for the electric brake device for the left wheel and the electric brake device for the right wheel.

3. The outer shape of the control device projected onto a virtual plane parallel to the substrate is symmetric with respect to a symmetry axis (P), The control device for an electric brake device according to claim 1 or 2, wherein at least some of the electrical connection parts are arranged symmetrically with respect to the symmetry axis.

4. The substrate has an IC (30) as the electronic element mounted thereon, and as the electrical connection parts, sensor terminal connection parts (61, 62) used for signal communication or power supply to one or more types of sensors including a load sensor (18) that detects the load output by the linear motion conversion unit, Wiring between the sensor terminal connection part and the IC, which are individually used by the electric brake device for the left wheel and the electric brake device for the right wheel, is provided as the selection wiring, The control device of the electric brake device according to claim 2, wherein pins of the IC used for the selection wiring are common to the electric brake device for the left wheel and the electric brake device for the right wheel.

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