KR101329387B1 - Additional functions embodiment using solenoid mechanism typed Single Motor Electric Wedge Brake Sysrem - Google Patents

Abstract

In the present invention, the electronic wedge brake (EWB) reduces the motor 13 for the braking function to one and reduces the overall size and the number of components, as well as an additional function of maintaining the pad setting interval. Implemented through the Solenoid Mechanism, it reduces the number of parts involved for motor power conversion and implementation, facilitating the overall design, while also driving non-self-locking NSL (non-self-locking) power for pad wear compensation. By dispersing and pressing two pairs while using a) type screw structure, it is possible to reduce solenoid load and to maintain the pad setting interval with uniform pressing force.

Wedge brake, pads, adjustable

Description

Additional functions embodiment using solenoid mechanism typed Single Motor Electric Wedge Brake Sysrem}

The present invention relates to a wedge brake system and, more particularly, to an additional function type single motor electronic wedge brake system using a solenoid mechanism.

In general, a brake system is a brake device used to maintain a parking state while simultaneously decelerating or stopping a driving vehicle.

Such a brake system usually uses a frictional brake that converts kinetic energy into heat energy by using frictional force and discharges it into the atmosphere to perform a braking action. This is because a disk rotating together with the wheel is pushed by the hydraulic pressure And performs the braking function.

However, such a hydraulic brake is implemented in such a way that the pad is strongly pushed toward the disc by using hydraulic pressure during braking, so that the hydraulic pressure is applied to the master cylinder that is operated through the booster that boosts the pedal operating force and generates the hydraulic pressure, and the hydraulic pressure leading to the wheel cylinder. As well as the line, a variety of devices for controlling and assisting them must be made a complex configuration, and the complexity of the configuration and the reliability of the braking performance according to the hydraulic use, there is a certain limit to the stability enhancement, etc., there is a vulnerability.

This makes it possible to simplify the structure that hydraulic brakes do not have, to enhance reliability of braking performance and to realize parking brake action, and to improve the response and performance of ABS (Anti Brake System) (EWB, Electro Wedge Brake) system is being developed and applied for optimum implementation.

The electronic wedge brake, EWB, uses a wedge assembly operated through an actuator to apply braking action by rubbing the brake pad toward the disc using a wedge assembly operated through an actuator.

At this time, the EWB can realize the braking force of the hydraulic brake even when using a motor using a voltage of 12V, which is the EWB self-energizing using the wedge phenomenon (Wedge) This is because the wedge moves and the pad is pressed by the actuator, and the friction force between the pad and the disk acts as an additional input force. Even if the force is small, a large braking force can be realized.

In addition, these EWBs provide a correction to automatically maintain the pad's set distance to the disk when the pad's set interval retention is exceeded, ie move the wedge assembly area toward the pad to adjust the pad gap beyond the set interval. It is done.

In addition, the EWB is fail-safe, that is, the braking force is not released during brake fail, and the braking force is continuously applied to prevent abnormal rotation of the vehicle body during normal driving. The function of releasing the braking force in the brake fail is also given.

In addition, the EWB can implement an electric parking brake (EPB) function, which is an electronic parking brake.

However, as the EWB implements not only a braking function but also a number of additional pad setting interval maintenance functions, a fail-safe function, and an EPB function, the overall component configuration becomes very complicated, and in particular, a braking function is provided. In addition to the motors, the separate motors for the implementation of many additional functions have the vulnerability of requiring two motors.

In addition, by using two motors for generating separate motive power, it is necessary to increase the overall size due to the space for accommodating the motors, and such an increase in size causes inconvenience of mounting restrictions on the wheel portions .

Accordingly, the present invention has been invented in view of the above. As the electronic wedge brake (EWB, Electro Wedge Brake) implements a braking function using the power generated from one motor, the overall motor is reduced to one and used as a whole. Its purpose is to reduce the size and improve the mountability, as well as reduce the cost and weight by reducing the number of components to convert and implement the motor power with one motor.

In addition, the present invention implements the motor power conversion and implementation, as the pad setting interval maintenance function, which is an additional function implemented in the electronic wedge brake (EWB), is implemented using a solenoid mechanism instead of a motor. The purpose is to reduce the number of relevant components to facilitate the overall design.

In addition, the electronic wedge brake of the present invention (EWB, Electro Wedge Brake) by using a pair of two to automatically maintain the pad setting interval when the pad wears, by reducing the pressure on the solenoid load and uniformity The purpose is to enable the performance to maintain the pad setting intervals by the pressing force.

The present invention for achieving the above object, the rotational force generated in one motor driven through the ECU for generating a control signal according to the braking using the operation signal of the electronic pedal and the information measured in the vehicle movement in the axial direction The inner outer pad assembly is brought into close contact with the disc wrapped in the wedge caliper, and the self-entering through the wedge action according to the positional movement of the wedge roller to increase the braking force by the pressing force on the disc. In the single motor electronic wedge brake system,

The wedge roller positioned between the wedge moving plate and the curved rolling contact surface of the wedge base plate while being coupled to the motor controlled by the ECU and coupled to the output shaft portion of the motor and rotated with the motor rotation, to implement the wedge action, A braking motor unit comprising a driving force transmission portion connected to actuate a wedge moving plate for pushing the inner pad assembly toward the disk;

A pair of adjusting units which are composed of NSL (Non-Self Locking) type screw coupled to the left and right sides of the motor located at the center of the pad, and are turned on and off under ECU control. Solenoid mechanism that presses the wedge moving plate, the wedge base plate and the wedge roller to move toward the pad to implement additional functions in addition to the main braking operation by using a pair of solenoid units for releasing and locking the unit. Solenoid Mechanism);

Characterized in that consisting of.

The adjusting unit includes a support nut coupled to a housing portion, a push rod shaft screwed to the support nut and axially moved with rotation, a bearing coupled to an end portion of the push rod shaft, and one end of the housing nut. The other end is fixed and consists of a pressurizing spring which exerts a constant axial force on the bearing side.

According to the present invention, the solenoid mechanism is turned on and off in an electromagnetic wedge brake (EWB) using one motor that generates power for main braking during braking. Under control, two pairs are used to implement the function of compensating for the pad setting interval maintenance due to pad wear by restraining or releasing the forward movement of a non-self-locking (NSL) type screw-coupled push rod shaft. By evenly distributing the pressing force, it is possible to reduce the solenoid load burden and to perform the pad setting interval maintenance performance with a uniform pressing force.

In addition, the present invention configures an electronic wedge brake (EWB) using one motor that generates power for main braking during braking, and uses a solenoid mechanism that operates in conjunction with one motor. As additional functions such as maintaining the pad setting intervals are implemented, the problem that may occur when using two power generating motors is eliminated, and the mounting performance is improved by reducing the overall size by using only one motor and the motor. In addition to reducing the cost and weight due to the reduction of the number of motion conversion components, there is an effect having the ease of design according to the simplification of the motion conversion structure between the motor-related parts.

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

1 is a block diagram of an additional function implementing type single motor electronic wedge brake system through a solenoid and a motor interlock according to the present invention. The single motor electronic wedge brake system of the present invention is operated by a driver for braking a vehicle. An electronic pedal (1), an ECU (2) for implementing control in consideration of vehicle information during braking, a wedge caliper (6) for pressing the disk (5) rotating together with the wheels to perform braking, and an ECU (2) for braking. The wedge actuator assembly is provided with a solenoid mechanism, which realizes braking by pressing the pad toward the disk 5 with the power generated by one motor 13 controlled by the controller. It consists of Say 10.

In addition, the single motor electronic wedge brake system is further provided with an auxiliary battery (4), wherein the auxiliary battery (4) is a solenoid (41, 41 ') of the motor (13) of the ECU (2) and the actuator assembly (10). Used as spare battery for

In addition, the single motor electronic wedge brake system receives a signal so that the ECU 2 recognizes the parking brake switching state when the parking brake is operated. For example, a separate electric signal is generated toward the ECU 2 at the driver's seat. The parking brake button is used.

The single motor electronic wedge brake system further includes a housing for receiving a wedge actuator assembly 10 therein, and the housing is coupled using a wedge caliper 6.

In addition, the ECU 2 receives the vehicle attitude information through the yaw moment sensor 3 mounted on the vehicle together with the depression amount information of the electronic pedal 1 to be operated to implement the control required for braking. .

In addition, the wedge caliper 6 and the wedge actuator assembly 10 coupled to the wedge caliper 6 have various sensors mounted thereon to transmit measurement signals to the ECU 2. Pad wear detection sensor to detect the increase in gap between the two wheels to maintain the set distance at all times, as well as to prevent wheel jamming that may occur when the pad is pressed against the disc 5 by the action of the wedge roller during braking. A load sensor or the like is provided.

In addition, the wedge caliper 6 surrounds the disk 5 which rotates together with the wheels, and is disposed on both sides of the disk 5 and presses the inner outer pad assembly 7 to press the disk 5 therein. 8).

This wedge caliper 6 is a torque that implements an interlocking action such that when the inner pad assembly 7 is pressed toward the disk 5, the outer pad assembly 8 located opposite to the disk 5 is also moved toward the disk 5. Member (which is a function of a conventional caliper type brake).

The wedge actuator assembly 10 is interlocked with a braking motor unit 11 that generates a braking force with power generated by one motor 13 controlled by the ECU 2, and the braking motor unit 11. To always maintain the set intervals of the wedge braking unit 16 and the pad assemblies 7 and 8 that press the pad assemblies 7 and 8 toward the disk 5 at one side of the wedge caliper 6. It consists of Solenoid Mechanism that is calibrated to

In addition, the braking motor unit 11 has one motor 13 in which the generating motor 13 is positioned at the center of the wedge caliper 6 by the control of the ECU 2 during braking. Only by using the motor 13, the wedge braking unit 16 for pressing the inner pad assembly 7 disposed on one side of the disk 5 is operated.

To this end, the braking motor unit 11 is located at the central portion of the wedge caliper 6 and is coupled to the motor 13 controlled by the ECU 2 and the output shaft portion of the motor 13 together with the motor rotation. It is composed of a driving force transmission unit 14 is rotated.

In addition, the wedge braking unit 16 is positioned toward the disk 5 opposite to the connecting rod 18 and the outer pad assembly 8 which are driven together through the driving force transmission unit 14 according to the driving of the motor 13. The wedge moving plate 17 moved through the connecting rod 18, the wedge arranged parallel to the wedge moving plate 17 so as to press the inner pad assembly 7 to the disk 5. It consists of a wedge roller 19 which is located between the rolling contact surfaces 17a, 20a formed between the base plate 20 and the pair of plates 17, 20, and generates frictional force.

In addition, as the connecting rod 18 is coupled to the surface at the upper and lower portions of the wedge moving plate 17, the wedge moving plate in the moving direction of the driving force transmission unit 14 according to the rotation of the motor 13. (17) is pushed, and the wedge moving plate (17) pushes the inner pad assembly (7) toward the disk (5), while the inner pad assembly (7) is actuated by the action of the wedge roller (19) Act to press toward (5).

In addition, the wedge roller 19 has a circular columnar shape positioned between a pair of plates 17 and 20 arranged to face each other, and is formed by a friction force generated by the behavior of the plates 17 and 20. It generates a wedge phenomenon that implements a self-energizing action, and acts as an input force to press the pad.

To this end, the wedge roller 19 is located between the rolling contact surface (17a, 20a) of the cross-sectional shape of the V (V) groove formed on the surface of a pair of plates (17, 20) facing each other, respectively, V) The rolling contact surfaces 17a and 20a having the groove cross-sectional shape move one plate (wedge plate 17) toward the pad in accordance with the positional change of the wedge roller 19, together with the generation of frictional force with the wedge roller 19. The act of giving is simultaneously implemented.

In addition, the wedge base plate 20 is coupled so as not to be pushed out, compared to the wedge moving plate 17 which is moved forward and backward while being pushed by the power of the motor 13.

In addition, a wedge spring 50 is provided between the wedge moving plate 17 and the wedge base plate 20, and the wedge spring 50 moves toward the pad to maintain an initial clearance when the pad wears. To this end, the wedge spring 50 is coupled to the initial state of pressing the wedge moving plate 17 toward the pad.

In addition, the solenoid mechanism, which implements various additional functions in addition to the main braking function through the braking motor unit 11 and the wedge braking unit 16 during the EWB operation, is a non-self-locking (NSL) type screw. A pair of coupled adjusting units 30 and 30 'and a pair of solenoid units that are turned on and off under the control of the ECU 2 to release and lock the binding force of the adjusting units 30 and 30'. 40, 40 ') is configured to implement an initial clearance maintenance function between the pad and the disk 5 according to the wear of the pad.

To this end, the adjusting units 30 and 30 'have the same configuration at both the left and right sides of the motor 13 positioned at the center of the pad, i.e., as shown in FIG. Support nut 31, 31 ′, push rod shafts 32, 32 ′ screwed to the support nuts 32, 32 ′ and axially moved with rotation, and the push rod shafts 32, 32 ′. The bearings 33 and 33 'coupled to the ends of the ends and the pressure springs 34 and 34', one end of which are fixed to the housing part and the other end exerts a continuous axial force on the bearings 33 and 33 '.

Here, the push rod shafts 32 and 32 'and the support nuts 31 and 31' are non-self-locking (NSL) type screws, which use a screw having a very large lead angle. When the force is applied in the axial direction, the large lead angle causes the axis to move automatically while rotating.

The bearings 33 and 33 'are made of a thrust bearing which is subjected to an axial force.

In addition, the pressure springs 34 and 34 'are assembled in a state of applying a constant force toward the bearings 33 and 33' during initial assembly.

In addition, the solenoid unit 40, 40 'is pulled out when the solenoids 41, 41' are turned on and off through the ECU 2 and the solenoids 41, 41 'are operated. It consists of switching levers 42 and 42 'that seesaw behaves about the hinge axis through the incoming axis.

Here, the switching levers 42 and 42 'have various shapes. For example, portions corresponding to the paths of the shafts 42 of the solenoids 41 and 41' are engaged with the push rod shafts 32 and 32 '. It is formed, and the other parts form a shape that is easy to move around the hinge point.

In addition, the switching levers 42 and 42 'are usually spring-supported to return to the initial state upon release of the solenoid 41 and 41'.

Accordingly, the push rod shafts 32 and 32 'and the switching levers 42 and 42' have the push rod shafts with the solenoids 41 and 41 'turned on. Engages with the screw portion of (32, 32 ') to restrain the axial movement of the push rod shafts (32, 32').

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

In the present invention, the electronic wedge brake (EWB) reduces the motor for the braking function to one, thereby reducing the overall size and the number of components, as well as a function of maintaining the pad setting interval, which is an additional function, instead of the motor. As implemented using Mechanism, there is a feature that facilitates the overall design by reducing the number of relevant parts for motor power conversion and implementation.

In addition to the present invention, the EWB automatically maintains the pad setting intervals in two pairs so as to distribute and press two pairs, thereby reducing the load on the solenoid and performing the pad setting interval maintaining performance with uniform pressing force. There are also features.

These features of the present invention are attributed to the fact that the electronic wedge brake system uses one motor 13 and the pad setting interval maintenance function other than the main braking is implemented using the solenoid mechanism.

As shown in Fig. 1, the EWB of the present invention is mounted on the disc 5 where the wedge caliper 6 having the inner outer pad assemblies 7 and 8 rotates along with the wheels, The wedge actuator assembly 10 controlled through the ECU 2 receiving the operation information of the pedal 1 is coupled to the side portion of the wedge caliper 6.

That is, when the wedge actuator assembly 10 rotates the pad with respect to the disk 5 via the driving force transmission unit 14, the rotational force generated by the one motor 13 driven and controlled by the ECU 2 is controlled. , Self-Energizing action according to the positional movement of the wedge roller 19 according to the relative behavior with respect to the pad to generate an input force to press the pad back to the disk 5, that is, the wedge action A wedge braking unit 16 having a structure of

The main braking action implemented in the single motor electronic wedge brake system having this characteristic will be briefly described with reference to FIG. 3, where the main braking function enables the ECU 2 to travel through various sensors together with the depression amount of the electronic pedal 1. As the motor 13 is driven by analyzing the information on the vehicle being driven, the rotational force of the motor 13 causes the wedge braking unit 16 to be driven through the driving force transmission unit 14 and the connecting rod 18. .

At this time, when the rotation direction of the motor 13 is the forward rotation, it is assumed that the braking situation when driving, and if the reverse rotation, the braking situation when reversing.

The behavior of the wedge braking unit 16 receiving this axial movement force is directed toward the motor 13 as compared to the wedge base plate 20 which is stationary, as shown in FIGS. As the wedge moving plate 17 coupled to the connecting rod 18 is moved, the pad (inner pad assembly 7) is pushed toward the disk 5 through the movement of the wedge moving plate 17. .

Then, as the wedge moving plate 17 is pushed further, the wedge roller 19 positioned on the rolling contact surfaces 17a and 20a between the wedge moving plate 17 and the wedge base plate 20 is moved in position, that is, the wedge. Through the frictional force and the movement of the moving plate 17, the wedge roller 19 is moved outward from the center position of the rolling contact surface (17a, 20a) generates a wedge effect.

This wedge effect of the wedge roller 19 causes the wedge moving plate 17 to move further away from the wedge base plate 20, while canceling the reaction force toward the disc 5 while the inner pad assembly 7 causes the disc 5. ) And acts as an input force to pressurize the disk, thereby increasing the disk pressing force of the inner outer pad assemblies 7 and 8 to generate a braking force.

When braking is released in such a braking state, as shown in FIGS. 4 (d) and 4 (e), the ECU 2 reversely rotates the motor 13, thereby driving the driving force transmitting unit 14 and the connecting rod 18. By moving the wedge moving plate 17 back to its initial position, the wedge roller 19 is moved to the center of the cloud contact surfaces 17a and 20a. The pressing force is released.

In addition, braking is performed in the same manner as in the case of forward braking even when the vehicle is braking backward, except that the control of the motor 13 of the ECU 2 causes the motor 13 to rotate in reverse (referred to as forward rotation). Since only there, it operates as shown in Figure 4 (bar), (g), so a detailed description thereof will be omitted.

On the other hand, the present invention, in addition to the operation during the main braking, the implementation of the pad setting interval maintenance function as an additional function, the pair of push rod shaft (32,32 ') coupled with non-self-locking (NSL) type screw coupled with it and release it A pair of solenoids 41 and 41 'are implemented while the ECU 2 controls them.

For example, maintaining the pad setting interval during the implementation of this additional function is a function that always maintains the set clearance between the pad and the disk 5 at the time of initial assembly, which is performed at every engine start or pad wear through the ECU 2. Implemented in the way it is performed upon recognition.

In this case, when the pad wear is recognized by the ECU 2, the motor 13 is driven in a situation where the ECU 2 recognizes the pad wear as compared to the method of driving the motor 13 together with the engine starting. The only difference is that all procedures are the same.

When such an operation for maintaining the initial set interval between the disk 5 and the pad is implemented at engine startup, the ECU 2 which recognizes this when the engine is started operates the main brake by driving the motor 13. As described above, the wedge moving plate 17 is moved through the driving force transmission unit 14 and the connecting rod 18, and the inner outer pads on both sides of the disk 5 are moved by the wedge moving plate 17. Assemblies (7, 8) are moved.

This inner outer pad assembly (7,8) is moved to the disk 5 side as shown in Figs. 4 (a) and (b), as in the case of main braking, the inner outer pad assembly (7,8). When the movement between the disk and the disk 5 occurs, the ECU 2 keeps the solenoid 81 on, so that the push rod shaft 52 of the support adjuster 50 remains in a restrained state.

In the case where the wear of the inner outer pad assembly (7,8) occurs when the wedge moving plate (17) is moved through the motor (13), that is, the inner outer pad assembly (7,8) and the disk ( 5) The wedge moving plate 17 is further moved by the driving force of the motor 13 when the set interval required for main braking is exceeded, and the ECU 2 moves the pair of solenoids 41 and 41 '. The switch is turned off to release the restraint state for the respective push rod shafts 32 and 32 '.

At this time, the switching of the off state of the solenoids 41 and 41 'is achieved by seesaw behavior of the hinged switching levers 42 and 42', so as to push push shafts 32 and 32 '. Will result in the release of binding.

Subsequently, the behavior of the push rod shafts 52 and 62 in which the restraining force of the solenoids 41 and 41 'is released is connected to the support nuts 31 and 31' and the NSL (Non-Self Locking) type screw. When the pressing force received from (34, 34 ') pushes the push rod shafts 32 and 32', the support rods 31 and 31 'are moved while the push rod shafts 32 and 32' are moved forward in the axial direction with rotation. Implemented by exiting

As the forward movement of the push rod shafts 32 and 32 'pushes the wedge fixing plate 20 through the bearings 33 and 33' provided at the ends thereof, the wedge fixing plate 20 is wedge roller. (19) and the wedge moving plate 17 are pushed together to the pads, and the push of the wedge moving plate 17 causes the inner and outer pad assemblies 7 and 8 to act as a torque member of the wedge caliper 6. It is brought into close contact with both sides of the disk 5, and as a result, as shown in FIG.

Subsequently, the ECU 2 drives the motor 13 again to readjust the wedge moving plate 17 to establish a set retention clearance between the pad and the disk 5, and then the solenoids 41 and 41 '. Again to constrain the push rod shafts 32 and 32 'via the switching levers 42 and 42', and then reversely rotate the motor 13 to form the wedge base plate 20 and the wedge roller ( 19) and the wedge moving plate 17 are returned to the initial state.

This results in excessive set intervals of the inner outer pad assembly (7,8) with respect to the disk (5) due to pad wear, i.e. between the disk (5) and the inner outer pad assembly (7,8) during braking. The holding interval is switched back to the maintained state, which enables the braking force maintenance through the wedge effect of the wedge roller 19 to be implemented the same every time without braking.

In addition, the solenoid mechanism, which implements the additional function of always maintaining the pad interval at the initial set interval, also implements a fail-safe function, that is, when the motor 13 fails in the braking state or When wheel jamming occurs in the wedge roller 19, the ECU 2 releases the pressurization of the wedge braking unit 16 as the solenoid 41, 41 'is turned off. Implement fail-safe functionality.

That is, as the ECU 2 turns off the solenoids 41 and 41 ', the restraining force of the push rod shafts 32 and 32' via the switching levers 42 and 42 'is released. (32,32 ') of the restraining force state, the electronic wedge brake is failing, as the reaction force for braking force is not achieved and the wedge effect of the wedge roller 19 for maintaining the braking force between the pad and the disk 5 is lost. It is switched to a fail-safe state, which prevents unwanted braking operation due to abnormal operation in the braking state.

1 is a block diagram of an additional function implementation type single motor electronic wedge brake system using a solenoid mechanism according to the present invention

FIG. 2 is a detailed configuration diagram of an additional function device using the solenoid mechanism according to FIG. 1.

Figure 3 is a state diagram of the wedge operation during the main braking of the single motor type electronic wedge brake system according to the present invention

4 (a) to (c) is a pad setting interval adjustment operation according to the present invention

    <Description of the symbols for the main parts of the drawings>

1: electronic pedal 2: ECU

3: yaw moment sensor 4: auxiliary battery

5: disk

6: Wedge Caliper 7,8: Inner Outer Pad Assembly

10: wedge actuator assembly

11 braking motor unit 13 motor

14: drive force transmission unit 16: wedge braking unit

17: wedge moving plate 17a, 20a: rolling contact surface

18: connecting rod 19: wedge roller

20: wedge base plate

30,30 ': Left / Right adjuster 31,31': Support nut

32,32 ': Push rod shaft 33,33': Bearing

34,34 ': Pressure spring 40,40': Left / right solenoid united

41,41 ': Solenoid 42,42': Switching lever

50: wedge spring

Claims (3)

The rotational force generated by the one motor 13 driven by the ECU 2 generating the control signal according to the braking using the operation signal of the electronic pedal 1 and the information measured in the vehicle is converted into motion in the axial direction. The inner outer pad assembly (7,8) is brought into close contact with the disc wrapped in the wedge caliper (6), and by self-energizing through the wedge action according to the position movement of the wedge roller (19). In a single motor electronic wedge brake system that backs up a braking force with a pressing force on the disk 5, The wedge moving plate 17 and the wedge base plate 20 are coupled to the motor 13 controlled through the ECU 2 and the output shaft of the motor 13 and rotated together with the rotation of the motor. The wedge roller 19 located between the rolling contact surfaces 17a and 20a is connected to actuate the wedge moving plate 17 which pushes and presses the inner pad assembly 7 toward the disk 5 so as to implement a wedge action. A braking motor unit 11 composed of a driving force transmitting unit 14; A pair of adjusting units 30 and 30 'coupled with a non-self-locking (NSL) type screw coupled to the same configuration in both left and right sides of the motor 13 positioned as the center portion of the pad, and the ECU ( 2) By using a pair of solenoid units 40 and 40 'which are turned on and off under control and release and lock the binding force of the adjusting units 30 and 30', to implement additional functions in addition to the main braking operation. A solenoid mechanism for pressing the wedge moving plate 17, the wedge base plate 20, and the wedge roller 19 to move toward the pad; An additional function implementation type single motor electronic wedge brake system using a solenoid mechanism, characterized in that consisting of. 2. The adjusting unit (30, 30 ') is screwed to the support nuts (31, 31') coupled to the housing portion, and the support nuts (32, 32 ') are moved axially with rotation. Push rod shafts 32 and 32 ', bearings 33 and 33' coupled to the ends of the push rod shafts 32 and 32 'and one end are fixed to the housing portion, and the other end of the bearings 33 and 33' is fixed. Single-function electronic wedge brake system with solenoid mechanism, characterized in that it consists of pressurizing springs (34, 34 ') which exert a constant axial force on the side. The solenoid unit (40, 40 ') of the solenoid (41, 41') that is turned on (On) and off (Off) through the ECU 2, and the operation of the solenoid (41, 41 ') A single-motor electronic wedge brake system using a solenoid mechanism, comprising a switching lever (42,42 ') that moves a seesaw around a hinge axis through an axis of drawing out and drawing.

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