MOTOR MODULE AND ABS HYDRAULIC UNIT
The present invention relates to a motor module which includes a motor and a planetary gear mechanism, and an ABS hydraulic unit in which the motor module is embedded and anti-lock braking control of a hydraulic brake is performed. In the related art, there is a known motor module including a motor and a reduction gear which is attached to an output shaft of the motor. In such a motor module, the reduction gear having a plurality of gears which are embedded in a housing formed to have a complicated shape is screwed to the motor (for example, refer to JP-A-2012-229724). However, in the motor module according to the technology of the related art, there is a need to screw a reduction gear to a motor by using a plurality of screws when attaching the reduction gear to the motor, resulting in an increased number of components and an increased number of steps required for assembly. Thus, significant cost and time are required. The invention aims to solve the above-described problem in the related art and to provide a motor module in which the number of components is reduced and the number of steps required for assembly is reduced, and an ABS hydraulic unit in which the motor module is embedded. According to the invention, in a motor module including a motor and a planetary gear mechanism which is attached to an output shaft of the motor, the module includes a fixing portion that integrally fixes the motor and the planetary gear mechanism. The fixing portion fixes the motor by inwardly clamping the motor and fixes an internal gear of the planetary gear mechanism. In this case, the fixing portion may fix the internal gear thereto by inwardly clamping the internal gear thereto. An end of the fixing portion on the planetary gear mechanism side may be formed so as to be widened in a flange shape in a direction away from a shaft center of the motor. The internal gear may have a flange portion which is formed so as to be widened in a flange shape in the direction away from the shaft center of the motor. An outer diameter of the flange portion may be formed so as to be substantially the same as an outer diameter of the end of the fixing portion on the planetary gear mechanism side. The end of the fixing portion may be in contact with the flange portion of the internal gear. A planetary carrier of the planetary gear mechanism may be provided so as to fix an eccentric shaft driving a pump of an ABS hydraulic unit in which anti-lock braking control of a hydraulic brake is performed. According to the invention, in an ABS hydraulic unit in which the motor module is embedded and anti-lock braking control of a hydraulic brake is performed, the ABS hydraulic unit includes a block in which a pipeline of a hydraulic circuit connected to the hydraulic brake is formed. An end of a fixing portion on a planetary gear mechanism side is fixed in the motor module so as to fit an inner face of a hole formed in the block. In this case, an internal gear may be fixed so as to fit the inner face of the hole in the block. The end of the fixing portion may be fixed by being clamped between the internal gear and the block. According to the invention, it is possible to realize a motor module in which the number of components is reduced and the number of steps required for assembly is reduced, and an ABS hydraulic unit in which the motor module is embedded. Hereinafter, a preferable embodiment according to the invention will be described with reference to the drawings. The hydraulic circuit 1 is filled with brake fluid and is connected to a master cylinder 2 at a connection end A. The master cylinder 2 has a brake lever 3 attached thereto and is connected to a reservoir 4. Accordingly, if a rider manipulates the brake lever 3 in order to control the front wheel brake, the master cylinder 2 discharges the brake fluid accumulated in the reservoir 4 to the hydraulic circuit 1. Meanwhile, the hydraulic circuit 1 is connected to a wheel cylinder 5 at a connection end B. The wheel cylinder 5 is provided in a brake caliper 6 of the front wheel. As hydraulic pressure inside the wheel cylinder 5 rises, the brake caliper 6 is operated, thereby generating braking force in the front wheel. The hydraulic circuit 1 in connection between the master cylinder 2 and the wheel cylinder 5 includes a motor 11, a pump 12, an inlet valve 13, an outlet valve 14, and an accumulator 15. The inlet valve 13 is an electromagnetic valve including a solenoid. The inlet valve 13 is connected to the connection end A through a first pipe 21 and is connected to the connection end B and the outlet valve 14 through a second pipe 22. The second pipe 22 branches off in midstream, thereby being respectively connected to the inlet valve 13, the connection end B, and the outlet valve 14. The inlet valve 13 is connected to the first pipe 21 and the second pipe 22 respectively via filters. The inlet valve 13 has a check valve which is connected in parallel between two filters. The check valve prohibits the brake fluid flowing from the first pipe 21 to the second pipe 22 but allows the brake fluid flowing from the second pipe 22 to the first pipe 21 even though the inlet valve 13 is closed. The brake fluid flowing from the first pipe 21 to the second pipe 22 is controlled by opening and closing the inlet valve 13. The outlet valve 14 is an electromagnetic valve including a solenoid. The outlet valve 14 is connected to the inlet valve 13 and the connection end B through the second pipe 22 and is connected to the accumulator 15 through a third pipe 23. The outlet valve 14 is connected to the second pipe 22 via a filter. The brake fluid flowing from the second pipe 22 to the third pipe 23 is controlled by opening and closing the outlet valve 14. The accumulator 15 is connected to the outlet valve 14 through the third pipe 23 and is connected to the pump 12 on an inlet side through a fourth pipe 24. The accumulator 15 can accumulate the brake fluid flowing in through the third pipe 23 and allows the accumulated brake fluid to flow out through the fourth pipe 24. The pump 12 is connected to the accumulator 15 through the fourth pipe 24, and is connected to the first pipe 21 through a fifth pipe 25. The pump 12 is connected to the fourth pipe 24 and is connected to the fifth pipe 25 via a throttle. The pump 12 operates in accordance with driving of the motor 11 which is a DC motor. The pump 12 takes the brake fluid in from the fourth pipe 24 on the inlet side and discharges the taken brake fluid through the fifth pipe 25 on an outlet side. An ECU 40 controls driving of the motor 11 and opening/closing states of the inlet valve 13 and the outlet valve 14 based on a rotational speed signal received from a speed sensor 41 In a normal braking state, the ECU 40 stops driving of the motor 11, maintains the inlet valve 13 in an open state, and maintains the outlet valve 14 in a closed state. Accordingly, as a rider manipulates the brake lever 3 and a pressure rise of the brake fluid is generated in the master cylinder 2 (refer to When performing braking in which braking force is generated by the brake caliper 6, the ECU 40 repeatedly determines whether or not the front wheel is in a locked state based on the rotational speed signal acquired from the speed sensors 41 As illustrated in The block 50 is formed of aluminum. In the block 50, the hydraulic circuit 1 (refer to The housing 42 is attached onto the housing attachment face 51 of the block 50 and covers a control substrate 43, the motor 11, the inlet valve 13, and the outlet valve 14 (refer to In the housing 42, thicknesses of a portion 42 When the housing 42 is detached as illustrated in The control substrate 43 is equipped with a CPU and a memory so as to configure the ECU 40, thereby controlling the ABS hydraulic unit 100. The control substrate 43 has a connector portion 43 As illustrated in The control substrate 43 is electrically connected to the motor 11, the inlet valve 13, and the outlet valve 14 via the film-like flexible wiring 44 having flexibility. Accordingly, the control substrate 43 can control opening and closing of the inlet valve 13 and the outlet valve 14 by energizing or de-energizing the inlet valve 13 and the outlet valve 14, and can control rotations of the motor 11. An end of the flexible wiring 44 is fixed to the control substrate 43, thereby being electrically connected thereto. Each of the motor 11, the inlet valve 13, and the outlet valve 14 are electrically connected to the flexible wiring 44 as connection terminals 11 As illustrated in The planetary gear mechanism 30 is in connection between the motor 11 and the eccentric shaft 18, and includes an internal gear 31, a planetary carrier 32, a sun gear 33, and a planetary gear 34. A wheel lock is formed in the internal gear 31 so as to prohibit the internal gear 31 from turning by being fixed to the block 50 in the hole 51 The planetary carrier 32 is formed to have a disk shape and is arranged in the internal gear 31. In the planetary carrier 32, three planetary gears 34 are rotatably attached. The planetary gear 34 is engaged with teeth formed along the inner circumferential face of the internal gear 31 at all times. In the planetary carrier 32, the sun gear 33 is arranged in the middle of the three planetary gears 34. The sun gear 33 is engaged with the three planetary gears 34 at all times while being embedded in the planetary carrier 32. A hole is formed in the planetary carrier 32 in the vicinity of a shaft center, and the sun gear 33 is installed in an output shaft 11 A hole is formed in the planetary carrier 32 in the vicinity of the shaft center on the eccentric shaft 18 side, and the eccentric shaft 18 is installed and fixed to the hole. Accordingly, the eccentric shaft 18 installed in the hole rotates integrally with the planetary carrier 32. An end of the eccentric shaft 18 is supported by the planetary gear mechanism 30, and a rotary shaft portion 18 In the planetary gear mechanism 30, according to the above-described configuration, as the sun gear 33 installed in the output shaft 11 As illustrated in The motor mount 11 The motor mount 11 In the internal gear 31 of the planetary gear mechanism 30, a flange portion 31 The end 11 In the embodiment of the invention, the motor module 10 includes the motor 11, the planetary gear mechanism 30 attached to the output shaft 11 In the embodiment of the invention, the flange portion 31 In the embodiment of the invention, the end 11 Hereinbefore, the invention has been described based on the embodiment. However, the invention is not limited thereto. For example, in the embodiment, the ABS hydraulic unit 100 is provided so as to be able to execute ABS control only in the front wheel. However, the embodiment is not limited thereto. For example, the ABS hydraulic unit 100 may be provided so as to be able to execute ABS control only in the rear wheel by being connected to a master cylinder of a brake pedal and a wheel cylinder of the rear wheel. In the above-described embodiment, the cylindrically shaped motor mount 11 In the above-described embodiment, the motor mount 11 In the above-described embodiment, in the motor module 10, the end 11 1 HYDRAULIC CIRCUIT 2 MASTER CYLINDER 3 BRAKE LEVER 4 RESERVOIR 5 WHEEL CYLINDER 6 BRAKE CALIPER (HYDRAULIC BRAKE) 10 MOTOR MODULE 11 MOTOR 11 11 11 11 11 12 PUMP 13 INLET VALVE 13 14 OUTLET VALVE 14 15 ACCUMULATOR 18 ECCENTRIC SHAFT 18 18 19 BEARING 20 BALL BEARING 21 FIRST PIPE 22 SECOND PIPE 23 THIRD PIPE 24 FOURTH PIPE 25 FIFTH PIPE 30 PLANETARY GEAR MECHANISM 31 INTERNAL GEAR 31 32 PLANETARY CARRIER 33 SUN GEAR 34 PLANETARY GEAR 40 ECU 41 41 42 HOUSING 42 42 43 CONTROL SUBSTRATE 43 44 FLEXIBLE WIRING 45 CONNECTOR 50 BLOCK 51 HOUSING ATTACHMENT FACE 51 51 52 PIPING CONNECTION FACE 100 ABS HYDRAULIC UNIT The invention aims to provide a motor module in which the number of components is reduced and the number of steps required for assembly is reduced, and an ABS hydraulic unit in which the motor module is embedded. Provided is a motor module including a motor and a planetary gear mechanism which is attached to an output shaft of the motor. The motor module includes a fixing portion that integrally fixes the motor and the planetary gear mechanism. The fixing portion fixes the motor by inwardly clamping the motor and fixes an internal gear of the planetary gear mechanism. 1. A motor module comprising:
a motor and a planetary gear mechanism which is attached to an output shaft of the motor, and a fixing portion that integrally fixes the motor and the planetary gear mechanism to each other, wherein the fixing portion fixes the motor by inwardly clamping the motor and fixes an internal gear of the planetary gear mechanism. 2. The motor module according to wherein the fixing portion fixes the internal gear thereto by inwardly clamping the internal gear thereto. 3. The motor module according to wherein an end of the fixing portion on a planetary gear mechanism side is formed so as to be widened in a flange shape in a direction away from a shaft center of the motor. 4. The motor module according to wherein the internal gear has a flange portion which is formed so as to be widened in a flange shape in a direction away from the shaft center of the motor. 5. The motor module according to wherein an outer diameter of the flange portion is formed so as to be substantially the same as an outer diameter of an end of the fixing portion on a planetary gear mechanism side. 6. The motor module according to wherein an end of the fixing portion is in contact with the flange portion of the internal gear. 7. The motor module according to wherein a planetary carrier of the planetary gear mechanism is configured to fix an eccentric shaft driving a pump of an ABS hydraulic unit in which anti-lock braking control of a hydraulic brake is performed. 8. An ABS hydraulic unit in which the motor module according to a block in which a pipeline of a hydraulic circuit connected to the hydraulic brake is formed, wherein an end of a fixing portion on a planetary gear mechanism side is fixed in the motor module so as to fit an inner face of a hole formed in the block. 9. The ABS hydraulic unit according to wherein an internal gear is fixed so as to fit the inner face of the hole in the block. 10. The ABS hydraulic unit according to wherein the end of the fixing portion is fixed by being clamped between the internal gear and the block.BACKGROUND OF THE INVENTION
SUMMARY OF THE INVENTION
BRIEF DESCRIPTION OF THE DRAWINGS
DETAILED DESCRIPTION
REFERENCE SIGNS LIST





