WO2018135710A1

WO2018135710A1 - Motor and brake system comprising same

Info

Publication number: WO2018135710A1
Application number: PCT/KR2017/006300
Authority: WO
Inventors: 고창복
Original assignee: 고창복
Priority date: 2017-01-22
Filing date: 2017-06-16
Publication date: 2018-07-26
Also published as: KR101921409B1; KR20180086544A

Abstract

A motor according to the present invention comprises: a motor shaft provided inside a housing; and a magnetic flux apparatus which comprises a rotor rotating with the motor shaft as the axis, and a stator fixed inside the housing and surrounding the rotor, and which creates braking power for a vehicle by generating torque by means of the interaction between the magnetic flux of the rotor and magnetic flux of the stator, wherein the length of the magnetic flux apparatus is longer in the direction perpendicular to the axial direction of the motor shaft than in the axial direction thereof.

Description

Motor and braking system including the same

The present invention relates to a motor and a braking system comprising the same, and more particularly to a motor for a brake and an electronic parking brake system operated by the motor.

BACKGROUND In general, a braking system mounted on a vehicle is for decelerating, stopping or maintaining a vehicle while driving, and converts kinetic energy during driving into thermal energy by a mechanical friction device to thereby perform a braking action.

Such a braking system is largely divided into a drum brake system and a disk brake system, and performs a braking action by braking hydraulic pressure.

BACKGROUND ART In recent years, braking systems used in vehicles are increasingly employing motors as a power source, and the representative type is an electronic disc motor brake system employing a motor as a power source of a driving device for pressing a friction pad.

Such a braking system enables a driver's convenience by enabling a hill hold function when stopping a hill while driving as well as a parking function, and therefore, a trend is gradually applied to a vehicle.

This function is possible because the rear parking brake is actuated by an electric motor to enable electronic control.

In the conventional technology of stopping a hill, when the driver presses a brake, hydraulic pressure is generated by this stepping force, and the generated hydraulic pressure causes the brake pad to closely adhere to the disk, thereby affecting the friction force between the disk and the pad. The brakes were generated, and the braking allowed the vehicle to stop, and the driver had to keep on applying the brakes when the hill was stopped.

On the other hand, the electronic disc motor brake system stops even when the pedal force is removed from the brake because the electric motor operates and the brake pad is mechanically pushed to generate the braking force after a certain time after the stop.

In addition, at the start, the parking brake is released as a signal of stepping on the excel, and thus starting is possible.

The braking system of a vehicle employing the electronic disk motor brake system has a problem of lack of construction space in the vehicle, and to solve the above structural problem, a loss of power generating ability of the motor is relatively relatively problematic. In addition, driving noise and vibration generation are separately a problem.

Therefore, various technologies are currently being researched and developed to solve the above problems.

The present invention has been made to improve the conventional technology, and to provide a motor and a braking system including the same, which are optimized for the construction space and can minimize the noise and maximize the performance.

Motor according to the invention, the motor shaft provided in the housing; And a rotor rotating around the motor shaft and a stator fixed in the housing to surround the rotor, generating torque through interaction between the magnetic flux of the rotor and the magnetic flux of the stator to brake the vehicle. And a magnetic flux device forming a magnetic flux device, the length of the magnetic flux device being longer in the vertical direction in the axial direction of the motor shaft than in the axial direction of the motor shaft.

Specifically, the stator further comprises a permanent magnet for generating magnetic flux, wherein the stator has one end and the other end facing each other on a plane perpendicular to the axial direction of the motor shaft therein, the one end and the other end the permanent magnet Can be installed.

Specifically, the magnetic flux device is formed on the plane perpendicular to the axial direction of the motor shaft, extending from the one end to the other end, the width is increased closer to the motor shaft and narrower as it moves away from the motor shaft. Can be formed.

Specifically, the stator extends past the motor shaft from the one end to the other end on a plane perpendicular to the axial direction of the motor shaft, having a maximum width at the motor shaft and a minimum width at the one end and the other end. It is formed, the length from one end to the other end may be formed longer than the length of the maximum width.

Specifically, the rotor may be radially formed on the plane perpendicular to the axial direction of the motor shaft, the radius of the maximum width of the stator around the motor shaft as a radius.

Specifically, the stator is divided into four equal to left and right up and down on the basis of the maximum width, and has a left, left, right, and right stator, alternately clockwise around the motor shaft, and have different polarities, and the permanent magnet A first permanent magnet disposed between the upper left stator and the lower left stator, the first permanent magnet having an upper side having the same polarity as the upper left stator and a lower side having the same polarity as the lower left stator; And a second permanent magnet disposed between the upper right stator and the lower right stator, the upper side having the same polarity as the upper right stator and the lower side having the same polarity as the lower right stator.

Specifically, the upper left stator and the lower right stator have an N (N) polarity, the upper right stator and the lower left stator have an S (S) polarity, and the first permanent magnet has an upper side in the upper left stator direction. (N) The lower side having the polarity and the lower left stator direction has the S (S) polarity, the second permanent magnet, the upper side of the upper right stator direction has the S (S) polarity and the lower side of the right stator direction is Y (N) may have polarity.

Specifically, the apparatus further includes a deceleration device for increasing a braking force supplied from the magnetic flux device, wherein the deceleration device is connected to an end of the motor shaft and may be formed together in the housing.

Specifically, one end is coupled to the hollow of the motor shaft and the other end is connected to the reduction device, may further include a guide pin for limiting the movement in the direction perpendicular to the axis of the reduction device.

Specifically, the deceleration device, an eccentric rotation unit formed on the output end of the motor shaft to rotate eccentrically; An internal gear that rotates eccentrically by the eccentric rotation; An outer gear engaged with an outer surface of the inner gear to allow the inner gear to idle or rotate; And a carrier for supplying an end portion for outputting rotational force to the outside by rotation of carrier pins respectively installed in the plurality of through holes of the internal gear, wherein the guide pin has one end of the motor. It is coupled to the hollow of the shaft, the other end is connected to the carrier, it can limit the movement in the direction perpendicular to the axis of the reduction device.

Specifically, end portions of the motor shaft and the carrier may have a coaxial axis.

In detail, the bearing unit may further include a bearing part formed between the deceleration device and the stator in the housing to absorb the shock from the deceleration device and limit the axial movement of the deceleration device.

In addition, the braking system according to the present invention includes a disk including the motor and rotating together with the wheel of the vehicle; A friction pad for pressing the disc to generate a braking force; And a pressing part for driving the friction pad to press the disk, wherein the pressing part is connected in parallel with an axial direction of the motor shaft.

Specifically, provided between the motor shaft and the pressing portion, and further comprising a reduction device for increasing the braking force supplied from the motor, the motor shaft, the pressing portion and the reduction device may have a coaxial.

The motor and the braking system including the same according to the present invention are provided with the reducer and the motor coaxially to maximize the braking output performance and to minimize the noise.

In addition, the motor and the braking system including the same according to the present invention, the shape of the motor is configured in the long direction to minimize the space occupied by the motor in the vehicle, thereby ensuring a sufficient space for the construction of the braking system, thereby At the same time, there is an effect that the reducer and the motor can be coaxially arranged in the vehicle without reducing the performance.

1 is a conceptual diagram of a braking system including a conventional motor.

2 is a cross-sectional view of a braking system including a conventional motor.

3 is a cross-sectional view of a conventional motor.

4 is a conceptual diagram of a braking system including a motor according to an embodiment of the present invention.

5 is a perspective view of a braking system including a motor according to an embodiment of the present invention.

6 is an exploded view of a motor according to an embodiment of the present invention.

7 is a cross-sectional view of a motor according to an embodiment of the present invention.

FIG. 8 is a cross-sectional view of a reduction device according to an embodiment of the present invention as seen from Y-Y 'of FIG.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings. In the present specification, in adding reference numerals to the components of each drawing, it should be noted that the same components as possible, even if displayed on different drawings have the same number as possible. In addition, in describing the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram of a braking system including a conventional motor, and FIG. 2 is a cross-sectional view of a braking system including a conventional motor.

1 and 2, the conventional motor 10 and the braking system 1 including the same, the motor 10, the first reduction device 30, the second reduction device 40, 3 includes a reduction device 50 and a braking device 70.

Hereinafter, a conventional motor 10 and a braking system 1 including the same will be described with reference to FIGS. 1 and 2.

The conventional motor 10 and the braking system 1 including the same employ an electronic disc motor brake system, and specifically, a disc D rotating together with a wheel (not shown) of a vehicle (not shown). ), A pair of friction pads (P) for pressing the disk (D), a guide carrier (C) for supporting the pair of friction pads (P), and the guide carrier (C) to move back and forth. A caliper housing (not shown) supported, a motor 10 for generating rotational force in the forward and reverse directions, and a rotational movement of the motor 10 are converted into linear reciprocating motion to press a pair of friction pads P. A braking device 70 is provided.

The braking device 70 presses any one of the pair of friction pads P through the pressing portion 71 toward the disk D to apply a braking force to the disk D through reaction with the finger portion 72. To pass.

The pressing portion 71 is accommodated in the cylinder portion 711 and provided with a piston 712 provided to press any one of the pair of friction pads (P) toward the disk (D), the rotational movement of the motor 10 Received from the output end 52a is provided with a conversion unit 713 for converting the linear motion to the piston 712, and transmits the braking force received from the motor 10 to the disk (D).

Here, the conversion unit 713, the spiral shaft coupled to the piston 712 is generally used, the male screw shaft (713a) provided on the conversion unit 713 and the female screw shaft (formed in the piston 712 ( The rotational motion generated in the motor 10 is converted into linear motion by the screw motion between the 712a.

In other words, the conventional motor 10 and the braking system 1 including the same, the driving force of the motor 10 is transmitted to the conversion unit 713, the rotation is limited in accordance with the rotation direction of the conversion unit 713 The piston 712 of the linear reciprocating motion to press the friction pad (P) toward the disk (D) to perform a braking action.

On the other hand, in general, since the motor 10 has a high RPM and a small torque, the motor 10 generally increases the torque by using the reducers 30 to 50, and the conventional motor 10 and the braking system including the same ( Also in 1), a reduction gear for increasing the driving force of the motor 10 is connected between the motor 10 and the conversion unit 713.

In addition, such a reducer is typically provided with a plurality of planetary gear units (not shown) in the axial direction of the motor 10 so as to reduce the speed in multiple stages in order to increase the reduction ratio (first method), or coaxial with the motor 10. It is provided to be formed biaxially (second method).

When the reduction gear of the 1st system is provided, the electric field length of the braking system 1 formed in the axial direction of the motor 10 becomes excessively long, and it became a factor which reduces the space utilization of a vehicle.

As the reduction gears 30 to 50 of the second system, first to third reduction devices 30 to 50 are formed, and the braking force is amplified in three stages by the first to third reduction devices 30 to 50. (See Figure 2)

In the motor 10 and the braking system 1 including the same according to the related art, the second type reduction gears 30 to 50 will be described below.

The first deceleration device 30 is formed of a pinion gear 31 having a first shaft X1 coaxial with an output shaft of the motor 10 and a pinion gear 31 meshed with the pinion gear 31. The third gear formed in two axes (X2) and the idle gear 32 and the idle gear 32 is coaxial with the second and third speed reduction devices (40, 50) and is formed biaxially with the motor (10) And a final gear 33 having an axis X3, wherein the second reduction gear 40 includes a first sun gear 41, a first satellite gear 42, a first carrier 43, and a ring gear 44. Has a satellite gear reduction mechanism, and the third reduction apparatus 50 has a satellite gear reduction mechanism having a second satellite gear 51, a carrier 52, and an output end 52a.

Accordingly, the torque generated in the motor 10 is first amplified by the difference in the number of gear teeth of the pinion gear 31 and the final gear 33 in the first reduction gear 30, and the second reduction gear 40 and Second and third amplification in the third reduction device (50).

Even if the first method is implemented to solve the problem of the second method, as described above, the first method causes the overall length of the braking system 1 formed in the axial direction of the motor 10 to be excessively long. It has become a factor to reduce the space utilization of the vehicle.

Accordingly, the present applicant has developed a motor 20 and a braking system 2 including the same according to an embodiment of the present invention to solve the above problems, which will be described in detail below.

4 is a conceptual diagram of a braking system including a motor according to an embodiment of the present invention, FIG. 5 is a perspective view of a braking system including a motor according to an embodiment of the present invention, and FIG. 6 is a diagram of a motor according to an embodiment of the present invention. 7 is a cross-sectional view of a motor according to an exemplary embodiment of the present invention, and FIG. 8 is a cross-sectional view of a reduction apparatus according to an exemplary embodiment of the present invention as viewed from the line Y-Y 'of FIG.

4 to 8, the motor 20 and the braking system 2 including the same according to the present invention, the motor 20, the reduction device 60, the braking device 70 and the bearing portion ( 80).

The motor 20 and the braking system 2 including the same according to the present invention include the conventional motor 10 shown in FIGS. 1 and 2 and the motor 20 in the braking system 1 including the same, and deceleration. The same reference numerals are used for the convenience of each configuration other than the device 60 and the bearing portion 80, but are not necessarily referring to the same configuration.

In the following, the configuration of the braking device 70 is the same as in the conventional motor 10 and the braking system 1 including the same, so as to replace them, the motor 20, deceleration with reference to Figures 4 to 8 The device 60 and the bearing portion 80 will be described in detail.

The motor 20 forms an appearance with the housing cover 21a and the housing 21b, and generates a braking force to be transmitted to the braking device 70 through the

magnetic flux devices

23a, 23b, 24, 25.

The

magnetic flux devices

23a, 23b, 24 and 25 include the

rotors

23a and 23b, the stator 24 and the permanent magnet 25, and the magnetic flux of the

rotors

23a and 23b and the stator 24 Torque is generated through the interaction between the magnetic fluxes to create braking force in the vehicle.

Here, the

rotors

23a and 23b rotate about the motor shaft 26 provided in the housing 21b as the axis, and the stator 24 is fixed in the housing 21b to rotate the

rotors

23a and 23b. It is formed to surround.

In the

magnetic flux devices

23a, 23b, 24, and 25, electric current flows into the brush 22a through the electric wire EL, and an intermittent current flows into the commutator 22b by the brush 22a. The magnetic flux can be generated to the armature 23a of the

rotors

23a and 23b by being supplied to the coils 23b of the 23a and 23b.

At this time, the stator 25 has one end A1 and the other end A2 facing each other on a plane perpendicular to the axial direction of the motor shaft 26 therein, and a permanent magnet at one end A1 and the other end A2. 24 may be provided. Here, the permanent magnet 24 can generate magnetic flux in the stator 25.

Torque is generated through the interaction between the magnetic flux of the

rotors

23a and 23b and the magnetic flux of the stator 25 generated as described above, which causes the armature 23b to rotate so that the motor shaft 26 rotates. do.

The

magnetic flux devices

23a, 23b, 24, 25 are formed longer in the axial direction of the motor shaft 26 than in the axial direction of the motor shaft 26.

For this purpose, the stator 25 of the

magnetic flux devices

23a, 23b, 24, 25 is formed extending from one end A1 to the other end A2 on a plane perpendicular to the axial direction of the motor shaft 26, The closer to 26, the greater the width, and the farther away from the motor shaft 26, the narrower the width.

Specifically, the stator 25 extends past the motor shaft 26 from one end A1 to the other end A2 on a plane perpendicular to the axial direction of the motor shaft 26, and has a maximum width at the motor shaft 26. It has (B1-B2), is formed to have a minimum width (B3-B4) at one end (A1) and the other end (A2), the length from one end (A1) to the other end (A2) is the maximum width (B1-B2) It may be formed longer than the length of. That is, the stator 25 may be formed in a rectangular shape.

As described above, the motor 20 according to the present invention has a shape in which the stator 25 is formed in the long direction to minimize the space occupied by the motor 20 in the vehicle, thereby sufficiently securing the construction space of the braking system 2. have.

In addition, in the motor 20 according to the present invention, even if the shape of the stator 25 is configured in the long direction, the stator 25 may be configured as follows in order to further increase the performance of the motor 20 without decreasing. .

The stator 25 may be divided into four equal parts, left and right, up and down based on the maximum width B1-B2, and may have an upper left stator 251, a lower left stator 252, a right upper stator 253, and a lower right stator 254.

Here, the upper left stator 251 and the lower right stator 254 have the same polarity, and the upper right stator 253 and the lower left stator 252 have the same polarity but different polarities from the upper left stator 251 and the lower right stator 254. Can have For example, the upper left stator 251 and the lower right stator 254 may have an N (N) polarity, and the upper right stator 253 and the lower left stator 252 may have an S (S) polarity.

Here, the permanent magnet 24 is disposed between the upper left stator 251 and the lower left stator 252, and the upper side has the same polarity as the upper left stator 251, and the lower side has the same polarity as the lower left stator 252. It is disposed between the first permanent magnet 241, the upper right stator 253 and the lower right stator 254, the upper side has the same polarity as the upper right stator 253 and the lower side has the same polarity as the lower right stator 254 It may include a second permanent magnet 242 to be.

For example, in the first permanent magnet 241, the upper side in the direction of the upper left stator 251 may have an N polarity, and the lower side in the direction of the lower left stator 252 may have an S polarity. The upper side in the right upper stator 253 direction may have an S (S) polarity, and a lower side in the right lower stator 254 direction may have a N (N) polarity. In other words, four poles are formed of the two permanent magnets (241, 242).

By the above stator 25 configuration, the armature 23a of the

rotors

23a and 23b has the maximum width of the stator 25 about the motor shaft 26 on a plane perpendicular to the axial direction of the motor shaft 26. It may be formed radially with the length of (B1-B2) as a radius.

Referring to the conventional motor 10 according to FIG. 3, in the related art, a magnetic field is formed by forming a magnetic path as a yoke, which is a stator 11, and attaching permanent magnets 121 to 124 inside the stator 11. In the conventional case, the motor 10 had to configure four permanent magnets 121 to 124 alternately to form four poles to form four poles (for example, the first permanent magnet 121 is a N pole, The second permanent magnet 122 is the S (S) pole, the third permanent magnet 123 is the N (N) pole, the fourth permanent magnet 124 is the S (S) pole), or the permanent magnet to increase the magnetic field. Since the thickness of the 121 to 124 should be increased, the radius of the armature 13 was inevitably reduced, and thus the torque was reduced.

In the embodiment of the present invention, as described above, the stator 25 has a rectangular shape, and only two permanent magnets 24 are installed at both ends A1 and A2 of the stator 25, but the stator 25 By dividing) into four and alternately clockwise to form different polarities, the magnetic field can be raised even though the radius of the armature 23a is not reduced, thereby improving the performance of the motor 20.

As described above, the motor 20 according to the exemplary embodiment of the present invention has a shape in which the stator 25 is formed in the long direction, thereby minimizing the space occupied by the motor 20 in the vehicle, thereby creating a space for constructing the braking system 2. It is possible to secure enough, so that the pressure portion 71 of the motor 20 and the braking device 70 is substantially parallel to the axial direction of the motor shaft 26 in the vehicle without reducing the performance of the motor 20. This has the effect of being placed (preferably coaxial).

The motor shaft 26 may be integrally formed with the

rotors

23a and 23b to become a rotation shaft of the

rotors

23a and 23b, and an eccentric rotation part 64 to be described later may be integrally formed at an end thereof.

In addition, the motor shaft 26 has a hollow may be inserted into the guide pin 26a in the hollow.

Guide pin 26a, one end is coupled to the hollow of the motor shaft 26 and the other end is connected to the carrier 63 of the reduction gear 60 to be described later to move in the direction perpendicular to the axis of the reduction gear 60 You can limit it.

At this time, the motor shaft 26 may be formed to have a coaxial with the end of the carrier (63).

The reduction device 60 is formed to be coaxial with each other between the

rotors

23a and 23b and the pressing portion 71, and may increase the braking force supplied from the motor 20.

Through this, the braking system 2 including the motor 20 according to the present invention has the effect of maximizing braking output performance by providing the reduction device 60 and the motor 20 coaxially and minimizing noise and vibration. There is.

In addition, the reduction device 60 is connected to the output ends (not shown) of the

rotors

23a and 23b, but may be formed together in the housing 21b of the motor 20. Through this, the braking system 2 can be further compacted, and the effect of noise and vibration absorption by the housing 21b can be maximized.

The reduction device 60 may be a cycloid gear.

Specifically, the speed reduction device 60 includes an eccentric rotation part 64 integrally formed at the output end of the motor shaft 26 to rotate eccentrically, an internal gear 61 eccentrically rotated by the eccentric rotation part 64, and an interior. Carrier pins which are respectively fitted to the outer surface of the gear 61 to allow the inner gear 61 to rotate and rotate, and to a plurality of through holes (not shown) of the inner gear 61. The carrier 63a which supplies rotational force to the output end 63c by rotation of 63b can be provided.

The eccentric rotation unit 64 may be formed so that the coupling center to which the output end of the motor shaft 26 is coupled to be eccentrically rotated from the center of rotation (O).

At this time, the radial difference between the inner gear 61 and the outer gear 62 may vary by the amount of eccentricity, and when one side of the inner gear 61 is in contact with the other side of the outer gear 62, the opposite side of the one side and 180 degrees It can be spaced by twice the amount of eccentricity.

When the output end of the motor shaft 26 rotates counterclockwise (T1), the internal gear 61 rotates in the clockwise direction T2, whereby the carrier pin 63b is again counterclockwise (T3) The rotational force can be transmitted to the output end 63c while rotating.

The bearing portion 80 is formed between the speed reduction device 60 and the stator 25 in the housing 21b to separate the stator 25 and the speed reduction device 60 from each other, and the shaft of the speed reduction device 60. It is possible to limit the directional movement and to absorb the shock from the reduction device 60.

That is, the bearing portion 80 limits the axial movement of the reduction apparatus 60, and the guide pin 26a described above may limit the movement in the direction perpendicular to the axis of the reduction apparatus 60.

As described above, the motor 20 and the braking system 2 including the same according to the present invention are provided with the reduction gear 60 and the motor 20 coaxially so that the braking output performance is maximized and the noise is minimized. have.

In addition, the motor 20 and the braking system 2 including the same according to the present invention, the shape of the motor 20 is configured in the long direction to minimize the space occupied by the motor 20 in the vehicle, the braking system 2 ) Can sufficiently secure the construction space, thereby reducing the performance of the motor 20 and substantially reducing the speed reduction device 60 and the motor 20 coaxially in the vehicle.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and should be understood by those skilled in the art within the technical spirit of the present invention. It is obvious that the modifications and improvements are possible.

All modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

Claims

A motor shaft provided in the housing; And

A rotor rotating around the motor shaft and a stator fixed in the housing to surround the rotor, generating torque through interaction between the magnetic flux of the rotor and the magnetic flux of the stator to provide braking force to the vehicle. Includes a flux forming device,

The length of the magnetic flux device,

The motor characterized in that it is formed longer in the vertical direction of the axial direction of the motor shaft than the axial direction of the motor shaft.
The method of claim 1,

Further comprising a permanent magnet for generating magnetic flux in the stator,

The stator,

The motor having one end and the other end facing each other on a plane perpendicular to the axial direction of the motor shaft therein, and the permanent magnet is installed on the one end and the other end.
The method of claim 2, wherein the magnetic flux device,

The motor extending from the one end to the other end in a plane perpendicular to the axial direction of the motor shaft, the width closer to the motor shaft is larger, the motor is characterized in that the width is formed narrower away from the motor shaft.
The method of claim 3, wherein the stator,

Extends past the motor shaft from the one end to the other end on a plane perpendicular to the axial direction of the motor shaft, having a maximum width at the motor shaft and a minimum width at the one end and the other end,

The motor from one end to the other end is formed longer than the length of the maximum width.
The method of claim 4, wherein the rotor,

The motor characterized in that the radially formed on the plane perpendicular to the axial direction of the motor shaft, the radius of the maximum width of the stator around the motor shaft as a radius.
The method of claim 5, wherein

The stator has a left and right, up and down, left and right, and the right and left stator divided into four equal to the left and right on the basis of the maximum width, alternately clockwise around the motor shaft has a different polarity,

The permanent magnet is disposed between the upper left stator and the lower left stator, the first permanent magnet is formed so that the upper side has the same polarity as the upper left stator and the lower side has the same polarity as the lower left stator; And

And a second permanent magnet disposed between the upper right stator and the lower right stator and configured to have an upper side having the same polarity as the upper right stator and a lower side having the same polarity as the lower right stator.
The method of claim 6,

The upper left stator and the lower right stator have an N (N) polarity,

The upper right stator and the lower left stator have an S (S) polarity,

The first permanent magnet has an upper (N) polarity in the upper left stator direction and an lower (S) polarity in the lower left stator direction.

The second permanent magnet is characterized in that the upper side of the upper right stator direction has an S (S) polarity and the lower side of the right lower stator direction has a N (N) polarity.
The method of claim 1,

It further includes a reduction device for increasing the braking force supplied from the magnetic flux device,

The deceleration device,

A motor connected to an end of the motor shaft and formed together in the housing.
The method of claim 8,

One end is coupled to the hollow of the motor shaft and the other end is connected to the reduction device, the motor further comprising a guide pin for limiting the movement in the direction perpendicular to the axis of the reduction device.
The method of claim 9, wherein the reduction device,

An eccentric rotation part formed at an output end of the motor shaft to eccentrically rotate;

An internal gear that rotates eccentrically by the eccentric rotation;

An outer gear engaged with an outer surface of the inner gear to allow the inner gear to idle or rotate; And

It is a cycloid gear including a carrier for supplying to the end for outputting the rotational force by the rotation of the carrier pins respectively installed in the plurality of through-holes of the inner gear,

The guide pin,

One end is coupled to the hollow of the motor shaft, the other end is connected to the carrier, characterized in that to limit the movement in the direction perpendicular to the axis of the reduction device.
The method of claim 10, wherein the end of the motor shaft and the carrier,

A motor having a coaxial shaft.
The method of claim 9,

And a bearing portion formed between the deceleration device and the stator in the housing and absorbing the impact from the deceleration device and limiting the axial movement of the deceleration device.
Comprising the motor of claim 1,

A disk rotating together with the wheel of the vehicle;

A friction pad for pressing the disc to generate a braking force; And

Further comprising a pressing unit for driving the friction pad to press the disk,

The pressing portion,

And a braking system connected in parallel with the axial direction of the motor shaft.
The method of claim 13,

It is provided between the motor shaft and the pressing portion, further comprising a reduction device for increasing the braking force supplied from the motor,

And said motor shaft, said pressing portion and said deceleration device have a coaxial shaft.