KR101612963B1 - Electro wedge brake device for vehicle - Google Patents

Abstract

The present invention relates to an electronic wedge brake apparatus for an automobile, and is capable of basically implementing a normal braking function, an automatic gap adjusting function between the disc 51 and the brake pad 52, and a fail safe function, It is possible to generate an emergency braking force when an emergency occurs in which the braking force is not generated by the power of the motor 54. [
The electronic wedge braking device for an automobile according to the present invention for achieving this is combined with an axis 55 of a motor 54 driven by the control of an electronic control unit 53 so that when the shaft 55 rotates, A linear motion block (56) moving along the longitudinal direction of the lens (55); The brake pedal 52 is coupled to the brake pad 52 for pressing the disk 51 so that the brake pad 52 is brought into contact with the disk 51 in accordance with the movement of the linear motion block 56, A wedge unit (60) for short-circuiting the brake pad (52);
A screw 70 installed on the side of the wedge unit 60 in a direction orthogonal to the brake pad 52 and having a latch 71 integrally coupled to an outer circumferential surface thereof; The rotation of the electronic control unit 53 is selectively restrained by the control of the electronic control unit 53 and the rotation of the electronic control unit 53 An emergency braking unit (80) for forcibly moving the wedge unit (60) toward the disk (51) so as to generate an emergency braking force while moving along the screw (70) The rotation of the screw 70 is selectively restrained by the control of the electronic control unit 53. The rotation of the screw 70 is controlled by the electronic control unit 53, An actuator which moves the screw 70 when releasing the constraint by the control of the unit 53 and implements an automatic gap adjustment function and a fail safe function between the disk 51 and the brake pad 52 And a unit (90).

Description

Technical Field [0001] The present invention relates to an electronic wedge brake device for a vehicle,

The present invention relates to an electronic wedge brake apparatus for an automobile having an emergency braking function.

Generally, the braking device for generating the braking force by using the hydraulic pressure is disadvantageous in that it is complicated in construction due to the use of various hydraulic devices, and is insufficient in reliability and stability of the braking performance depending on the use of the hydraulic pressure.

In recent years, the company has developed an electronic wedge brake (EWB) that can simplify the structure that hydraulic brakes do not have, simplify the reliability of braking performance, improve responsiveness, and optimize integrated chassis control. And the application is gradually increasing and trending.

1 schematically shows the structure of a conventional electronic wedge brake apparatus using a solenoid, which has already been described in detail in Patent Registration No. 10-0879890 filed by the present applicant for a patent application .

A wedge unit 3 is coupled to a brake pad 2 that presses both sides of the disc 1 to generate a braking force by friction. The wedge unit 3 is connected to the brake pad 2 And a wedge roller 6 interposed between the moving plate 4 and the base plate 5. The base plate 5 includes a moving plate 4 coupled to the moving plate 4 and a base plate 5 spaced apart from the moving plate 4, Threaded working surfaces 4a and 5a are formed on the moving plate 4 and the base plate 5 and the wedge roller 6 is inserted into the working surfaces 4a and 5a It is a structure that is capable of rolling movement.

The base unit 5 is connected to an adjuster unit 7. The adjuster unit 7 includes a push rod 8 disposed in close contact with the base plate 5 and a push rod 8 screwed with the push rod 8, And an urging spring 10 installed to support both ends of the push rod 8 and the support nut 9 to press the push rod 8 toward the base plate 5 Consists of.

The push rod 8 is composed of a head portion 8a and a screw shaft 8b and a latch 8c is integrally formed on the head portion 8a.

The screw shaft 8b is screwed so as to be freely rotatable with respect to the support nut 9. The push rod 8 is rotated by the force of the adjustment spring 10, 5).

A switch lever 11 is coupled to the latch 8c by a detachable screw connection so as to restrain the free rotation of the push rod 8. The switch lever 11 is actuated by a solenoid 12 .

That is, when the solenoid 12 is turned on, the switch lever 11 remains engaged with the latch 8c. When the solenoid 12 is turned off, the switch lever 11 11 are separated from the latch 8c.

The solenoid 12 is operated under the control of an electronic control unit 13 (hereinafter referred to as ECU).

The moving plate 4 is coupled to the linear moving block 16 through the connecting rod 14 and the interlocking rod 15 and the linear moving block 16 is connected to the shaft 18 of the motor 17, The linear motion block 16 is moved along the longitudinal direction of the shaft 18 along the rotational direction of the shaft 18 when the motor 17 is driven to rotate the shaft 18, It is a structure that performs linear movement.

The motor (17) is operated under the control of the ECU (13).

The support nut 9, the solenoid 12, and the motor 17 are fixed to a housing (not shown). The housing is coupled to one side of a wedge caliper (not shown) .

The conventional electronic wedge brake apparatus configured as described above has a normal braking function, an automatic gap adjustment function between the disc and the brake pads, and a function of forcibly dropping the brake pad when the brake pad, which has been squeezed on the disc during braking, Fail-safe function can be implemented.

That is, when the brake pedal is depressed, the normal braking function rotates the motor 17 under the control of the ECU 13, and the linear motion block 16 linearly moves along the motor shaft 18, The connecting rod 14 and the moving plate 4 move together in the same direction. When the moving plate 4 is moved, the moving plate 4 and the brake pad 2 are moved to the side of the disk 1 by the threaded working surfaces 4a and 5a and the wedge roller 6 Thereby pressing against the side surface of the disc 1, thereby generating a braking force due to the frictional force, thereby achieving normal braking.

When the gap between the disc 1 and the brake pad 2 becomes larger than the pre-wear state (initial state) of the brake pad 2 due to wear of the brake pad 2, The clearance between the brake pads 2 is automatically adjusted to the initial state.

That is, when the motor 17 rotates by the number of revolutions of R1 during the normal braking in the initial state before the brake pad 2 is worn, the brake pad 2 is pressed against the disk 1 to perform braking. However, if the gap is widened due to wear of the brake pad 2, even if the motor 17 rotates by the number of revolutions of the R1, the brake pad 2 does not contact the disk 1 and the braking force is not generated.

Therefore, the ECU 13 recognizes the situation at this time and operates the solenoid 12 together with the motor 17 to release the switch lever 11 from the latch 8c when the brake pedal is depressed during braking. When the switch lever 11 is disengaged, the screw shaft 8b freely rotates with respect to the support nut 9 by the force of the urging spring 10 so that the push rod 8 is rotated from the support nut 9 And presses the base plate 5 toward the disc 1 while protruding. The wedge roller 6, the moving plate 4 and the brake pad 2 are moved together so that the base plate 5 is moved toward the disc 1 by the urging force of the push rod 8, The brake pad 2 is pressed against the side surface of the disc 1 to generate a braking force due to frictional force.

In other words, when the motor 17 rotates by the number of revolutions of R1, the adjust unit 7 forcibly moves the brake pad 2 by the gap generated by the abrasion of the brake pad 2, . The movement of the push rod 8 protruding from the support nut 9 is fixed by the engagement of the latch 8c and the switch lever 11 by the solenoid 12 operating under the control of the ECU 13. [ Therefore, even if the brake pad 2 is returned from the disc 1 after the braking is completed, the gap between the disc 1 and the brake pad 2 remains the same as the initial state before the wear of the brake pad 2 , Even if the motor 17 is rotated by the number of revolutions of R1 in the next operation, the brake pad 2 is pressed onto the disk 1 to perform normal braking.

It is also possible to prevent the brake pad 2 from being detached from the disc 1 after the braking is completed due to the breakage of the motor 17 or the jamming of the wedge roller 6 jamming phenomenon.

In this case, the ECU 13 recognizes the situation at this time and activates the solenoid 12 to disconnect the switch lever 11 from the latch 8c. On the other hand, since the brake pad 2 pressing the disc 1 in contact with the side surface of the disc 1 always receives a reaction force from the disc 1, the switch lever 11 is separated from the latch 8c The brake pad 2 and the wedge unit 3 move away from the side surface of the disc 1 by the reaction force of the disc 1 (since the reaction force of the disc is larger than the force of the adjustment spring The wedge unit moves smoothly). Then the push rod 8 is retracted to be inserted into the support nut 9 while rotating against the force of the urging spring 10 so that the brake pad 2 is forcibly detached from the disc 1 Fail safe function can be realized.

However, the above-described conventional electronic wedge brake apparatus is disadvantageous in that the operating force is transmitted to the moving plate (the driven plate) due to a failure of the motor 17, breakage or malfunction of the linear moving block 16, the interlocking rod 15 and the connecting rod 14 4), sufficient braking frictional force is not generated between the disc 1 and the brake pad 2, resulting in a risk of accident.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an engine control apparatus and a control method for a vehicle having improved stability by providing a configuration in which an emergency braking situation can proceed in a situation where a braking force And an object of the present invention is to provide an electronic wedge brake device.

According to an aspect of the present invention, there is provided an electronic wedge brake apparatus for an automotive vehicle, comprising: a linear motion block that is coupled to a shaft of a motor driven by control of an electronic control unit and moves along a longitudinal direction of the shaft when the shaft rotates; and; A wedge unit coupled to a brake pad for pressing the disk and contacting the brake pad with the disk in accordance with the movement of the linear motion block or contacting and shorting the brake pad brought into contact with the disk; A screw installed on the side of the wedge unit in a direction perpendicular to the brake pads and having a latch integrally coupled to an outer circumferential surface thereof; The rotation of the screw is selectively restrained under the control of the electronic control unit, and the rotation of the screw is controlled by the control of the electronic control unit An emergency braking unit for forcibly moving the wedge unit toward the disk so as to generate an emergency braking force while moving; And a screw connected to the other end of the screw to allow free rotation of the screw, selectively restricting rotation of the screw under the control of the electronic control unit, and when the constraint is released by control of the electronic control unit, And an even unit that implements an automatic gap adjusting function between the disc and the brake pad and a fail safe function.

Here, the latch is coupled to an intermediate position in the longitudinal direction of the screw.

The wedge unit includes a moving plate coupled to one side of the brake pad and having a threaded working surface formed on the other side and movable along a radial direction of the disk in association with the linear motion block; A base plate having a threaded working surface formed on one surface thereof facing the moving plate and having an other surface in contact with the emergency braking unit; And a wedge roller installed between the operation surface of the moving plate and the operation surface of the base plate and rolling in accordance with the movement of the moving plate.

The emergency braking unit includes an emergency braking nut having a gear groove formed along an outer circumferential surface thereof so as to be freely rotatably coupled to one end of the screw and in contact with the base plate; An emergency braking spring installed to support both ends of the emergency braking nut and the latch so as to provide a force for urging the emergency braking nut toward the base plate; An emergency brake solenoid operated under control of the electronic control unit; An emergency braking lever provided at one end of the housing coupled to the wedge caliper so as to be rotatable through a hinge and connected at the other end to the emergency braking solenoid; Wherein the emergency braking lever has one end coupled to the emergency braking lever and the other end coupled to the gear groove of the emergency braking nut by gear engagement so as to engage with the gear groove of the emergency braking nut in accordance with rotation of the emergency braking lever And an emergency braking stopper which is operated to release or release the engagement.

A support nut fixed to the housing while being screwed with the other end of the screw so as to freely rotate the screw; An adjust spring installed to support both ends of the support nut and the latch to provide an elastic force to the latch in a direction in which the screw protrudes from the support nut; An adjust solenoid operated by control of the electronic control unit; An adjust lever provided at one end of the housing so as to be rotatable through a hinge and connected at the other end to the adjust solenoid; And a gear groove having one end coupled to the adjust lever and the other end engaged with the gear by engaging with the gear to engage with the latch according to the rotation of the adjust lever, And a simple stopper.

The emergency braking spring is formed to have a greater elastic force than the adjustment spring.

The electronic wedge brake apparatus according to the present invention can basically realize a normal braking function, an automatic gap adjusting function between the disc 51 and the brake pad 52 and a fail safe function, And the emergency braking force is generated in the event of an emergency in which the braking force can not be generated due to the power of the vehicle. Thus, there is an effect that the safety can be maximized.

FIG. 1 is a configuration diagram for explaining a conventional electronic wedge brake apparatus for an automobile,
2 is a block diagram for explaining an electronic wedge brake apparatus for an automobile having an emergency braking function according to the present invention.

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

The electronic wedge braking apparatus for an automobile according to the present invention comprises a disk 51 rotated together with wheels as shown in Fig. 2, and a disk 51 fixed on both sides of the disk 51 with a gap therebetween The brake pad 52 is engaged with the shaft 55 of the motor 54 driven by the control of the ECU 53 and moves along the longitudinal direction of the shaft 55 when the shaft 55 rotates A linear movement block 56 which is coupled to the brake pad 52 so as to bring the brake pad 52 into contact with the disk 51 in accordance with the movement of the linear motion block 56, A wedge unit 60 for contacting and disconnecting the brake pad 52 that is in contact with the brake pad 52 and an outer circumferential surface 60 which is spaced apart from the side of the wedge unit 60 in a direction perpendicular to the brake pad 52, A screw 70 integrally coupled with the latch 71, The rotation of the electronic control unit 53 is selectively restrained by the control of the electronic control unit 53 and the control of the electronic control unit 53 An emergency braking unit 80 for forcibly moving the wedge unit 60 toward the disk 51 so as to generate an emergency braking force while moving along the screw 70 when releasing restraint by the screw 70, To selectively rotate the screw (70) under the control of the electronic control unit (53) to allow free rotation of the screw (70) (70) to move the disc (51) and the brake pad (52) when the disc (51) is released, and to implement an automatic gap adjusting function and a fail safe function It is configured to include a 90.

Here, the latch 71 is coupled to the intermediate position of the screw 70, but the present invention is not limited thereto.

The wedge unit 60 has one surface coupled to the brake pad 52 and a threaded working surface 61a formed on the other surface of the wedge unit 60. The wedge unit 60 has a radial direction of the disk 51 interlocked with the linear motion block 61, And a base plate 62 having a threaded working surface 62a formed on one surface thereof facing the moving plate 61 and the other surface being in contact with the airstream unit 70, And a wedge roller (62) inserted between the working surface (61a) of the moving plate (61) and the working surface (62a) of the base plate (62) and rolling in accordance with the movement of the moving plate 63).

The forward movement block 56 and the movement plate 61 are connected to each other through a linkage rod 65 and an interlocking rod 64 so as to transmit power. It is not necessary to use two rods 64 and 65 for connection of the plate 61, and one or other link mechanisms may be used as needed.

The emergency braking unit 80 includes an emergency braking nut (not shown) having a gear groove 81a formed on an outer circumferential surface of the screw 70 so as to be freely rotatably connected to the base plate 62, And an emergency braking spring 82 which is installed to support both ends of the emergency braking nut 81 and the latch 71 to provide a force for urging the emergency braking nut 81 toward the base plate 62 An emergency braking solenoid 83 which is operated under the control of the electronic control unit 53 and a housing 66 connected to the wedge caliper and having one end rotatably mounted via a hinge 84a, And an emergency braking lever 84 connected to the emergency braking solenoid 83. The emergency braking lever 84 is coupled at one end to the emergency braking lever 84 and at the other end to the gear groove 81a of the emergency braking nut 81, ≪ / RTI > And an emergency braking stopper 85 that is engaged with the gear groove 81a of the emergency braking nut 81 in accordance with the rotation of the emergency braking lever 84 so as to engage or disengage do.

Although the screw 70 and the emergency braking nut 81 are coupled to each other by a screw fastening method, the emergency braking nut 81 smoothly rotates in one direction due to the force of the emergency braking spring 82 It can move toward the base plate 62 along the screw 70. This structure is called non-self locking.

The adjust unit 90 includes a support nut 91 fixed to the housing 66 while being screwed to the other end of the screw 70 so as to freely rotate the screw 70, And an adjusting spring 92 installed at the opposite ends of the latch 71 to provide elastic force to the latch 71 in a direction in which the screw 70 protrudes from the support nut 91, An adjust solenoid 93 which is operated under the control of the electronic control unit 53 and a solenoid 93 which is rotatably connected to the housing 66 via a hinge 94a and whose other end is connected to the adjust solenoid 93 And a gear groove which is engaged with the latch 71 so as to be engaged with the gear at the other end of the gear lever so as to be engaged with the gear lever of the gear lever 94, As the latch 71 rotates, And an abutment stopper 95 which is operated to engage or disengage the engagement.

In addition, in the present invention, the urging force of the emergency braking spring 82 is set to be larger than the urging force of the urging spring 92, and it is preferable that the emergency braking spring 82 has a large elastic force of usually 3 to 5 times But is not limited thereto.

The motor 54, the emergency braking solenoid 83 and the adjust solenoid 93 are also fixed to the housing 66.

The screw 70 and the support nut 91 are screwed together so that the screw 70 rotates smoothly against the support nut 91 and protrudes from the support nut 91 Self-locking structure capable of moving in the direction of insertion into the supporting nut 91 and in the direction of being inserted into the supporting nut 91.

Hereinafter, the operation of the electronic wedge brake apparatus according to the present invention will be described.

First, the electronic wedge brake apparatus according to the present invention can perform a normal braking function.

That is, when the brake pedal is depressed, the motor 54 is rotated under the control of the ECU 53, the linear motion block 56 linearly moves along the motor shaft 55, and the interlocking rod 64 and the connection rod 65 and the moving plate 61 move together in the same direction.

When the moving plate 61 moves, the moving plate 61 and the brake pad 52 are moved to the side of the disk 51 by the threaded working surfaces 61a and 62a and the wedge roller 63 Thereby pressing against the side surface of the disk 51. As a result, the braking force due to the frictional force is generated and normal braking is performed.

The electronic wedge brake apparatus according to the present invention can perform an automatic gap adjustment function between the disc 51 and the brake pad 52. [

In other words, when the gap between the disc 51 and the brake pad 52 becomes larger than the pre-wear state (initial state) of the brake pad 52 due to wear of the brake pad 52, And the brake pads 52 are automatically adjusted to the initial state.

That is, when the motor 54 rotates by the number of rotations of R1 in the normal braking operation in the initial state before the brake pad 52 is worn, the brake pad 52 is pressed against the disk 51 to perform braking.

However, if the brake pad 52 is worn to widen the clearance, even if the motor 54 rotates by the number of revolutions of the R1, the brake pad 52 does not contact the disk 51 and the braking force is not generated.

Therefore, when the ECU 53 recognizes the situation at this time and actuates the brake solenoid 93 together with the motor 54 when the brake pedal is depressed during braking, the ECU 53 rotates the adjust lever 94, The abutment stopper 95 is separated from the latch 71.

The screw 70 engaged with the latch 71 is allowed to freely rotate with respect to the support nut 91 so as to be protruded from the support nut 91 and the screw The emergency braking nut 81 moves together with the movement of the emergency braking nut 81 so that the emergency braking nut 81 presses the base plate 62 toward the disk 51.

The base plate 62 and the wedge roller 66 are moved together with the moving plate 61 and the brake pad 52 when the base plate 62 is pressed against the disc 51, The brake pad 52 is pressed against the side surface of the disk 51 to generate a braking force due to frictional force.

In other words, when the motor 54 rotates by the number of revolutions of R1, the adjust unit 90 forcibly moves the brake pad 52 by a gap generated by the abrasion of the brake pad 52, .

The movement of the screw 70 protruding from the support nut 92 is performed by the aid of the adjustment solenoid 93 operated under the control of the ECU 53 so that the stopper 95 is engaged with the latch 71 .

The gap between the disc 51 and the brake pad 52 is maintained to be the same as the initial state before the brake pad 52 is worn even if the brake pad 52 is returned from the disc 51 after braking is completed In the next operation, even if the motor 53 rotates by the number of revolutions of R1, the brake pad 52 is pressed on the disk 51 to perform normal braking.

In addition, the electronic wedge brake apparatus according to the present invention has a fail safe function for forcibly dropping the brake pads 52, which have been pressed on the disc 51 during braking, when the brakes are not released from the disc 51 after braking is completed Can be implemented.

That is, a phenomenon may occur in which the brake pad 52 that has been pressed on the disk 51 during braking does not fall off the disk 51 after completion of the braking. This may be caused by a failure of the motor 53 or jamming of the wedge roller 66 jamming phenomenon.

In this case, the ECU 53 recognizes the situation at this time, activates the adjust solenoid 93, and releases the stopper 95 from the latch 71.

On the other hand, since the brake pad 52 which is in contact with the side surface of the disk 51 and presses the disk 51 always receives a reaction force from the disk 51, the abrasive stopper 95, The brake pad 52 and the wedge unit 60 move away from the side surface of the disc 51 by the reaction force of the disc 51 The wedge unit moves smoothly).

Then, the screw 70 is retracted to be inserted into the support nut 91 while rotating against the force of the urging spring 92, whereby the brake pad 52 is forcibly detached from the disk 51 The fail safe function can be implemented.

Further, the electronic wedge brake apparatus according to the present invention has a function of generating an emergency braking force when a situation occurs in which the braking force is not generated by the power of the motor 54 during braking.

In other words, even if the brake pedal is depressed during the braking operation, the operating force is transmitted to the moving plate 61 (for example, due to a failure of the motor 53, breakage or malfunction of the linear moving block 56, interlocking rod 64 and connecting rod 65, , Sufficient braking frictional force is not generated between the disc 51 and the brake pad 52, resulting in a risk of accident occurrence.

In this case, the ECU 53 recognizes the situation at this time and activates the emergency braking solenoid 83 to rotate the emergency braking lever 84. Accordingly, the emergency braking stopper 85 is operated to rotate the emergency braking nut 81 And is separated from the gear groove 81a.

The emergency braking nut 81 is then allowed to move freely in one direction with respect to the screw 70 and to move along the screw 70 to move the base plate 62 to the disk 51, .

The base plate 62 and the wedge roller 66 are moved together with the moving plate 61 and the brake pad 52 when the base plate 62 is pressed against the disc 51, The brake pad 52 is pressed against the side surface of the disk 51 to generate an emergency braking force due to frictional force.

In other words, according to the present invention, when a situation occurs in which the brake pad 52 can not be pressed onto the side surface of the disk 51 by the power of the motor 54 during braking, the ECU 53 controls the emergency braking unit 80 So that the brake pads 52 are forcibly moved and pressed against the side surface of the disc 51 so that the emergency braking force due to the frictional force can be generated.

As described above, the electronic wedge brake apparatus according to the present invention can basically realize a normal braking function, an automatic gap adjusting function between the disc 51 and the brake pad 52, and a fail-safe function, It is possible to generate emergency braking force in the event of an emergency in which the braking force can not be generated by the power of the motor 54. Accordingly, there is an advantage that the safety can be maximized.

51 - Disc 52 - Brake Pads
53 - Electronic control unit (ECU) 54 - Motor
56 - Linear motion block 60 - Wedge unit
70 - Screw 80 - Emergency braking unit
90 - Easy unit

Claims (6)

A linear motion block 56 (hereinafter, referred to as a " linear motion block ") 56 which is engaged with an axis 55 of a motor 54 driven by the control of the electronic control unit 53 and moves along the longitudinal direction of the axis 55 when the axis 55 rotates )and;
The brake pedal 52 is coupled to the brake pad 52 for pressing the disk 51 so that the brake pad 52 is brought into contact with the disk 51 in accordance with the movement of the linear motion block 56, A wedge unit (60) for short-circuiting the brake pad (52);
A screw 70 installed on the side of the wedge unit 60 in a direction orthogonal to the brake pad 52 and having a latch 71 integrally coupled to an outer circumferential surface thereof;
The rotation of the electronic control unit 53 is selectively restrained by the control of the electronic control unit 53 and the rotation of the electronic control unit 53 An emergency braking unit (80) for forcibly moving the wedge unit (60) toward the disk (51) so as to generate an emergency braking force while moving along the screw (70)
The rotation of the screw 70 is selectively restrained by the control of the electronic control unit 53. The rotation of the screw 70 is controlled by the electronic control unit 53, An actuator which moves the screw 70 when releasing the constraint by the control of the unit 53 and implements an automatic gap adjustment function and a fail safe function between the disk 51 and the brake pad 52 Unit 90;
And an electronic wedge braking device for an automobile. The latch according to claim 1, wherein the latch (71) is coupled to a longitudinally intermediate position of the screw (70);
And an electronic wedge braking device for an automobile. The wedge-type sensor according to claim 1, wherein the wedge unit (60)
The brake pad 52 is fixed to the brake pad 52 so that it can move along the radial direction of the disk 51 while interlocking with the linear motion block 56, A moving plate 61;
A base plate 62 having threaded working surfaces 61a and 62a formed on one surface thereof facing the moving plate 61 and having the other surface in contact with the emergency braking unit 80;
A wedge roller 63 installed between the working surface 61a of the moving plate 61 and the working surface 62a of the base plate 62 and rolling in accordance with the movement of the moving plate 61;
And an electronic wedge braking device for an automobile. 4. The emergency braking system according to claim 3, wherein the emergency braking unit (80)
An emergency braking nut 81 that is rotatably coupled to one end of the screw 70 and is provided to be in contact with the base plate 62 and has a gear groove 81a formed along an outer circumferential surface thereof;
An emergency braking spring 82 which is supported at both ends of the emergency braking nut 81 and the latch 71 to provide a force for urging the emergency braking nut 81 toward the base plate 62;
An emergency brake solenoid (83) operated under the control of the electronic control unit (53);
An emergency braking lever 84 provided at one end of the housing 66 coupled to the wedge caliper so as to be rotatable via a hinge 84a and connected at the other end to the emergency braking solenoid 83;
The emergency braking lever 84 has one end coupled to the emergency braking lever 84 and the other end coupled to the gear groove 81a of the emergency braking nut 81 by gear engagement. An emergency braking stopper 85 that engages or is disengaged to engage with the gear groove 81a of the emergency braking nut 81;
And an electronic wedge braking device for an automobile. 5. The apparatus according to claim 4, wherein the adjust unit (90)
A support nut 91 fixed to the housing 66 while being screwed to the other end of the screw 70 so that the screw 70 can rotate freely;
And an urging spring (82) installed to support both ends of the support nut (91) and the latch (71) to provide an elastic force to the latch (71) in a direction in which the screw (70) projects from the support nut 92);
An adjust solenoid 93 operated under the control of the electronic control unit 53;
An adjust lever 94 provided at one end of the housing 66 so as to be rotatable via a hinge 94a and the other end connected to the adjust solenoid 93;
A gear groove is provided at one end of the gear lever so that the gear 71 is engaged with the gear 71 so that the gear 71 is engaged with the latch 71 in accordance with the rotation of the gear lever An abutment stopper 95 which is operated to engage or disengage;
And an electronic wedge braking device for an automobile. The emergency braking spring (82) according to claim 5, wherein the emergency braking spring (82) is formed to have greater elastic force than the adjustment spring (92);
And an electronic wedge braking device for an automobile.

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