KR20040033804A - Safety Braking Apparatus of Vehicle - Google Patents

Abstract

PURPOSE: A safe braking device of a vehicle is provided to help a driver to drive safely and reduce driver's fatigue by preventing the vehicle on a slope road from rolling back when the vehicle stopped on the slope road starts and maintaining a braking state without continuously stepping on a brake pedal, in stopping the vehicle. CONSTITUTION: In a safe braking device of a vehicle, an input part inputting a set value, to set up the vehicle speed and a standard of judgment, an accelerator pedal sensor deciding the operating state of an accelerator pedal, a vehicle speed sensor deciding whether the vehicle speed corresponds to the set value, and an inertia switch cutting off a current applied to each control part when the braking device abnormally operates are electrically connected to an input side of a control unit. An auxiliary braking unit is electrically connected to an output side of the control unit. The auxiliary braking unit has a driving motor(42) into the middle part of which a driving shaft(41) is fitted, first and second magnets(44,46) forcibly fitted into the driving shaft, a magnetic plate(48) freely fitted to sides of the first and second magnets through the driving shaft, a connection plate(52) fitted to a side of the magnetic plate, and a load sensor(54) installed to a side of the driving motor. The driving motor and the first and second magnets are each electrically connected to the control unit and are turned on/off according to a control current applied from the control unit. The safe braking device moves a brake pedal(15) to a braking position through a braking force transmission part and maintains the brake pedal by comparing information input through each sensor with the set value input through the input part according to a control order and applying a control signal to the auxiliary braking unit.

Description

Safety Braking Apparatus of Vehicle

The present invention relates to a braking device of a vehicle, and in particular, when the vehicle is stopped, the brake pedal is moved to a braking position so that the braking state is maintained even if the brake pedal is not kept on even when the vehicle is stopped. The present invention relates to a safety brake device for a vehicle that helps to drive safely and reduces driver fatigue.

The driver should step on the brake pedal when stopping or slowing the running vehicle. Especially, when stopping the vehicle, the brake pedal should be continuously applied even after the vehicle is stopped, which adds to the driver's fatigue. Unlike in the case of automatic transmission vehicles, the inertia of moving forward in the direction of the vehicle is applied even when the vehicle is stopped. Therefore, when the vehicle is stopped completely, the brake pedal must be pressed relatively harder, which causes more driver fatigue. .

In addition, when starting a vehicle parked on a steep uphill slope, the vehicle is pushed backward even in the case of an automatic transmission vehicle.

Meanwhile, in view of this, there is a technique proposed by the applicant of the present invention as Patent No. 27067, which operates a brake pedal, a master cylinder, a release cylinder, and the like, while exchanging the left and right sides of the booster with the vacuum pressure generated from the engine to achieve a desired purpose. Specifically, the pressure difference between the chambers is generated by the atmosphere flowing between the chambers, and the master cylinder is operated by the force generated by the pressure difference to brake the vehicle.

However, adjusting the engine which is highly electronicized only by the limited vacuum pressure generated as such is a major cause of engine mismatch.

Accordingly, the present invention has been invented to solve the above disadvantages, and prevents the vehicle from slipping in the opposite direction to the traveling direction when starting the vehicle after stopping on the slope, and continues to press the brake pedal when the vehicle is paused. It is an object of the present invention to provide a safety brake device for a vehicle that can help a novice driver to operate safely and reduce the fatigue of a driver by maintaining a braking state even when it is maintained.

The present invention for achieving the above object, the input unit for inputting a set value to set the vehicle speed and the criterion on the input side of the control unit, and the accelerator pedal sensor for determining whether the operation of the accelerator pedal installed in the driver's seat, A vehicle speed sensor for determining whether the vehicle speed is within the set value and an inertial switch that cuts off the current applied to each controller when the braking device malfunctions are electrically connected, and an auxiliary braking means is electrically connected to the output side. By comparing the information input through each sensor and the set value input through the input unit according to the control procedure, by applying a control signal to the auxiliary braking means to move and maintain the brake pedal to the braking position via the braking force transmission unit. It is.

In addition, the braking force transmission unit, the bracket is installed so as to pivot through the hinge shaft, the brake pedal is installed, and a fan-shaped gear is formed along the circumference in the form of a fan shape, a stopper is installed on one side and the hinge is inserted through the bracket A pedal moving plate is provided so as to pivot about the axis.

The auxiliary braking means may include a drive motor having a drive roller and a drive shaft fixed at the center thereof, a first magnet and a second magnet fitted to the drive shaft and fixed to the side surfaces of the first and second magnets. And a load plate sensor mounted on one side of the drive motor, and having a magnetic plate on which one side of the drive motor is fitted, having a one-way clutch fitted to the drive shaft on one side. The drive motor, the first magnet and the second magnet are electrically connected to the control unit, respectively, and are configured to be turned on / off in accordance with a control current applied from the control unit.

1 is a block diagram illustrating a control process of a safety brake device according to the present invention;

2 is an exploded perspective view of the auxiliary braking means of the present invention;

3 is a schematic cross-sectional view of the auxiliary braking means of the present invention;

4 is a schematic diagram of an inertial switch of the present invention;

5 is a flowchart illustrating a control operation according to an embodiment of the present invention;

1 --- control unit, 3 --- input unit,

5 --- accelerator pedal sensor, 7 --- vehicle speed sensor,

9 --- inertial switch, 15 --- brake pedal,

20 --- hinged shaft, 22 --- bracket,

24 --- driven gear, 28 --- pedal shift plate,

30 --- push rod, 32 --- brake booster,

34 --- master cylinder, 40 --- drive roller,

41 --- drive shaft, 42 --- drive motor,

44 --- first magnet, 46 --- second magnet,

48 --- magnetic plate, 50 --- one-way clutch,

52 --- connection plate, 54 --- load sensor,

58 --- drive gear, 60 --- switchbox,

62 --- box body, 64 --- inertial rod,

66 --- support spring, 68 --- rubber support plate,

70 --- switch cover plate, 72 --- switch body,

74 --- switch,

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

1 is a block diagram for explaining a control device according to the present invention, Figure 2 is an exploded perspective view of the auxiliary braking means according to the invention, Figure 3 is a schematic cross-sectional view of the auxiliary braking means according to the present invention, the present invention controls An input unit 3 for inputting a set value for setting the vehicle speed and the criterion for determination on the input side of the unit 1, an accelerator pedal sensor 5 for determining whether the accelerator pedal installed in the driver's seat is operated, and the vehicle speed is set. The vehicle speed detecting sensor 7 for determining whether the value is satisfied and the inertial switch 9 which cuts off the current applied to each control unit when the braking device malfunctions are electrically connected, and the auxiliary braking means is electrically connected to the output side. It is connected.

The auxiliary braking means includes a braking force transmission portion provided at a position adjacent to the brake pedal 15 provided in the driver's seat of the vehicle, and an auxiliary braking portion connected via the braking force transmission portion, and separately from the auxiliary braking means. It is electrically connected to the inertial switch 9 provided at a predetermined position.

In this case, the braking force transmission part is formed in a substantially U-shape and has a bracket 22 installed so as to be pivotable via a hinge shaft 20 on which the brake pedal 15 is installed. A gear 24 is formed and provided with a pedal moving plate 28 fitted to the bracket 22 to pivot through the hinge shaft 20, and the brake pedal 15 includes a known push rod ( 30 and the brake booster 32 and the master cylinder 34 is connected, and when the pedal pedal 15 is pressed, the pedal is pivoted about the hinge shaft 20 while the push rod 30 is the brake booster 32. By pressing), the master cylinder 34 is operated so that the braking force is exerted.

The auxiliary braking means includes a driving motor 42 having a driving roller 40 at one side thereof and a driving shaft 41 fixed at the center thereof, and a first magnet 44 fitted to and fixed to the driving shaft 41. The magnetic plate 48 is installed on the second magnet 46, the side of the first and second magnets 44, 46, the movement is freely fitted via the drive shaft 40, the one side is fitted to the drive shaft 40 A one-way clutch 50 and a connecting plate 52 fitted on one side of the magnetic plate 48 and a load sensor 54 provided on one side of the driving motor 42, wherein the load plate sensor 52 is provided. The driving motor 42, the first magnet 44, and the second magnet 46 are electrically connected to the control unit 1, respectively, and are configured to be turned on / off in accordance with a control current applied from the control unit 1. have.

In addition, the drive roller 40 has a drive gear 58 is formed in the center of the body (not shown) is connected to the driven gear 24 formed on the pedal moving plate 28 by the drive motor 42 Is rotated, the pedal moving plate 28 is moved based on the rotational force so that the brake pedal 15 is switched to the braking position.

In addition, as shown in FIG. 4, the inertial switch 9 is provided with a switch box 60 in a predetermined shape, and the body 62 is provided via a box body 62 embedded in the switch box 60. The support shaft 63 is fixedly installed at one side of the support shaft 63, and a support spring 66 is installed at one end thereof by connecting the inertial rod 64 to one end thereof.

In addition, one side of the switch box 60 is provided so that the rubber support plate 68 is installed to be in contact with one side of the inertial rod 64 when in a free state, the switch in a predetermined position within the turning radius of the inertial rod 64 A switch 74 having a cover plate roller 70 and a switch body 72 is installed, while the switch 74 is electrically connected to the input side of the control unit 1, wherein the inertia rod ( 64 is located at the rear and the switch 74 is located at the front side, which is effective for detecting a malfunction of the auxiliary braking means for installation of the inertial switch.

Next, the operation according to the present invention will be described as an embodiment.

When the vehicle is stopped, the safety brake device of the present invention detects this from the control unit 1 and turns on the control power to the driving motor 42 and the first and second magnets 44 and 46 to operate the driving motor 42. At the same time, the first and second magnets 44 and 46 are magnetized to move the brake lever 15 to the braking position. Then, the moving state is momentarily fixed by magnetic force, and the driver presses the accelerator pedal to start the vehicle. The pedal operation detection sensor 5 detects this and turns off the control current through the control unit 1 so that the brake pedal 15 is returned to control the vehicle in a normal driving state, and the braking device operates due to a malfunction during driving. When the inertial switch 9 is repeatedly performed to block and connect the power applied to each control unit, the inertial switch 9 is configured to safely stop the vehicle with sufficient time.

That is, when the driving vehicle is stopped, the accelerator pedal operation detection sensor 5 detects this and applies a signal to the control unit 1, and the vehicle speed detected by the vehicle speed detection sensor 7 is constant at a state of 0 Km / h. When the time elapses (about 1.5 seconds as an example), a control current is applied from the control unit 1 to the drive motor 42 and the first and second magnets 44 and 46.

Accordingly, the drive motor 42 rotates the drive shaft 41 to rotate the drive roller 40. Then, the drive gear 58 is rotated counterclockwise while rotating the lever moving plate 28 clockwise. As it moves, the brake lever 15 presses the brake booster 32 to operate the brake device.

In addition, since the first and second magnets 44 and 46 are magnetized, the connection plate 52 is attracted and fixed through the magnetic plate 48, so that the one-way clutch 50 regulates the reverse rotation of the driving roller 40. When the pressure of the push rod 30 reaches a limit point and the load detection sensor 54 detects this, the operation of the driving motor 42 is stopped, but the brake pedal 15 due to the pressure of the push rod 30. Since the restoring force is prevented from being generated in the counterclockwise direction (shown in dashed lines), the braked state is maintained as it is even if the driver does not step on the brake pedal 15 separately.

If the vehicle speed detected by the vehicle speed sensor is still 0Km / h even after a certain time (e.g., about 6 seconds) has elapsed while the accelerator pedal is pressed, the vehicle speed sensor is malfunctioning. By determining this in the unit 1, the braking device is automatically turned down to prevent a safety accident due to a malfunction of the control element.

Then, when the driver presses the accelerator pedal to start the vehicle, the accelerator pedal operation switch detects this and applies a control signal to the control unit 1, whereby the control unit 1 is driven with the drive motor 42. The current applied to the first and second magnets 44 and 46 is blocked.

Accordingly, as the connecting plate 52, which has been temporarily fixed by the magnetic force of the first and second magnets 44 and 46, is released in a free state, the lever moving plate 28 is moved in the dotted line direction to return the brake lever 15 to its original position. By returning, the braking state is automatically released so that the vehicle can be started.

On the other hand, if the braking device malfunctions and the braking is momentarily applied to the vehicle body, the inertia force is applied, and the inertia switch 9 detects this and repeatedly switches the switch on / off to stop the vehicle gradually. When this occurs, the inertial rod 64 pushes the switch cover plate 70 by the inertia force to turn on the switch.

That is, this is because the inertial rod 64 is installed through the support spring 66 and has elasticity, and since the rubber support plate 68 is installed on one side of the box body 62, the inertia acts on the vehicle body. The inertia rod 64 turns forward while turning forward with the elasticity of the support spring 66 and then turns backward with elasticity of the spring, and then bounces back through the rubber support plate 68 to receive the force of turning forward again. Thus, for example, as the inertia rod 64 repeats the movement a predetermined number of times, such as moving left and right within an additional predetermined range, the switch intermittently applies the control current while repeatedly performing the on-off-on operation. Even if it is turned on again, about 1.5 seconds must elapse, thereby ensuring time that can be controlled by repetitive operation.

In addition, the inertial switch 9 is configured to operate immediately when only an inertial force is applied to the vehicle regardless of the above determination procedure, thereby effectively preventing an unexpected safety accident due to a malfunction of the brake system.

Meanwhile, in the present invention, for example, the control current is simultaneously applied to the first and second magnets 44 and 46. However, the control power is supplied only to one of the magnets of the first and second magnets 44 and 46. It can also be configured to use as a secondary magnet when one magnet is not working by allowing it to be authorized and the other to be used as a secondary magnet.

In addition, each of the above control elements may be collectively controlled through the control unit 1 or may be configured to be manually controlled using a known remote controller, and the brake may be turned on / off in the shift lever (not shown). The switch may be installed and configured to temporarily release the braking device when the vehicle is reversed.

In addition, the driving element constituting the braking device is not limited to that described in the embodiment of the present invention, of course, it can be carried out by changing the basic configuration as appropriate within the scope not departing from the claims.

As described above, according to the present invention, when the vehicle is stopped, the driver automatically detects and brakes the brake pedal even if the driver does not operate the vehicle, thereby preventing the vehicle from slipping in the opposite direction to the traveling direction when starting and stopping the vehicle. When stopping, even if the brake pedal is not pressed down, the braking state is maintained as it is, thereby helping the novice driver to drive safely and reducing the fatigue of the driver.

Claims (4)

An input unit 3 for inputting a set value to set the vehicle speed and the criterion on the input side of the control unit 1; An accelerator pedal sensor 5 for determining whether the accelerator pedal installed in the driver's seat is operated; A vehicle speed sensor 7 for determining whether the vehicle speed corresponds to a set value; An inertial switch 9 which cuts off a current applied to each control unit when the braking device malfunctions is electrically connected; On the output side Drive motor 58 is formed in the center of the body 56 has a drive roller 40 is engaged with the driven gear 24 formed on the pedal moving plate 28, the drive motor with the drive shaft 41 is fitted in the center The drive shaft 41 is provided on the side surfaces of the first magnet 44 and the second magnet 46, and the first and second magnets 44 and 46, which are inserted into and fixed to the driving shaft 41. A magnetic plate 48 to which the movement is inserted freely and installed, a one-way clutch 50 fitted to the drive shaft 41 on one side, and a connecting plate 52 fitted to one side of the magnetic plate 48; A load sensing sensor 54 is provided at one side of the drive motor 42, while the drive motor 42, the first magnet 44, and the second magnet 46 are each a control unit 1. The auxiliary braking means is electrically connected to the auxiliary braking means configured to be turned on / off according to the control current applied from the control unit 1, The brake pedal 15 is moved to the braking position by the braking force transmission unit by applying a control signal to the auxiliary braking means by comparing the information input through the respective sensors with the set value input through the input unit according to the control procedure. Vehicle safety brakes. According to claim 1, wherein the braking force transmission, the bracket 22 is installed so as to be pivotable via the hinge shaft 20, the brake pedal (15) is installed, and the driven gears along the circumferential surface in a fan shape ( And a pedal moving plate (28) formed so as to be pivotally pivoted through the hinge shaft (20) formed through the bracket (22). The inertial rod of claim 1, wherein the inertial switch 9 is elastically installed through a support shaft 63 fixed to one side of the box body 62 and a support spring 66 provided on the support shaft 63. (64), the rubber support plate (68) installed on one side of the box body (62), electrically connected to the input side of the control unit (1) and equipped with a switch cover plate roller (70) and the switch body (72) And a switch (74) provided at a predetermined position within a turning radius of (64). The vehicle safety brake device according to claim 1, wherein the control unit (1) is configured to detect the vehicle and to turn down the braking device when it is detected that the vehicle is stopped even when a predetermined time elapses while the accelerator pedal is pressed.