KR20060067226A - Steering wheel oscillation apparatus for car - Google Patents

Abstract

The present invention is to improve the driving environment by reducing the vibration transmitted to the steering wheel due to the road surface condition while driving the vehicle, as well as to provide a vehicle steering wheel vibration device that can provide various information to the driver using the vibration force of the steering wheel. Regarding, the characteristic configuration is a wheel vibration sensor 20 installed on one side of the driving wheel to detect the vibration generated in the wheel while driving the vehicle, the failure of the vehicle, the driving state, the driver's drowsiness detection and transmitted from the outside In the information collecting unit 30 for sensing a variety of information, the control unit 10 for receiving the information of the wheel vibration sensor 20 and the information collecting unit 30 to generate a control signal, and in the control unit 10 While operating by the generated signal to reduce the vibration of the steering wheel 50 to minimize the driver's fatigue and by vibrating the steering wheel 50 to transmit information to the driver The hayeoseo will include a vibration (40) embedded in the steering wheel lock (50).

Vehicle, vibration, steering wheel, information transmission, vibration device

Description

Steering wheel oscillation apparatus for car}

1 is a graph showing the relationship between the frequency and the vibration level of the general suspension mode before and after the vibration and the steering wheel torsional vibration mode.

Figure 2 is a schematic diagram showing an embodiment of a steering wheel device of a conventional vehicle.

Figure 3 is a block diagram showing a vibration device according to the present invention.

4 is a sectional view showing a vibration unit according to the present invention.

Figure 5 is a graph showing a state in which the vibration force is reduced by the vibration device in the present invention.

※ Explanation of symbols about main part of drawing ※

10: control unit 20: wheel vibration sensor

30: information collecting unit 41: vibration element

42: acceleration sensor 44: insulator

50: steering wheel 51: spring

51: ring

The present invention relates to a steering wheel vibration device for a vehicle, and more particularly, to improve the driving environment by reducing the vibration transmitted to the steering wheel due to the road surface condition while driving the vehicle, and to the driver by using the vibration force of the steering wheel. The present invention relates to a steering wheel vibration device for a vehicle capable of providing various information.

In general, steering wheel shimmy vibrations cause tire unbalance vibrations to tie the tie rods to the left and right, so that the gear box, u-joint and steering column ( Vibration is transmitted to the steering wheel via a steering column, which shimmy vibration is closely related to the vibration mode in the torsional direction of the steering wheel.

That is, as shown in Fig. 1, when the steering wheel torsional vibration mode is set at a frequency that is twice the vibration mode before and after the suspension, and tire unbalance vibration occurs at 20 Hz ( Generally, the second harmonic component of the vibration mode before and after the 110 to 12 kph suspension and the steering wheel torsional vibration mode 40㎐ meet to generate a resonance, thereby amplifying shimmy vibration.

Therefore, in general, the steering wheel torsional vibration mode should be designed so that it does not double the vibration mode before and after the suspension.

The torsional vibration mode of the steering wheel can be thought of as a simple model as shown in FIG. In this case, the frequency of the torsional vibration mode is determined by the stiffness of the steering column and the inertia characteristic of the steering wheel.

That is, the torsional natural frequencies of the simply modeled steering wheel and column system are calculated as in Equation 1.

[Equation 1]

Wn = SQRT {{K} over {J}}

Where J is the inertia of the steering wheel and K is the torsion spring constant of the steering column.

In order to change this torsional natural frequency, it is necessary to change the causticity of the steering column or the inertia of the steering wheel.

However, the steering column is set to a sufficiently high rigidity in consideration of handling characteristics, so that it is difficult to increase any more. Also, the inertia characteristic of the steering wheel is a steering wheel. It is difficult to change the shape of the

In order to solve this problem, a steering wheel device of a vehicle for changing a steering wheel torsional vibration mode frequency by varying an inertia characteristic of a steering wheel has been developed. As shown in.                         

As described herein, when the vehicle speed sensor 110 detects the speed of the vehicle, the controller 120 may vary the steering wheel torsional vibration frequency according to the vehicle speed detected by the vehicle speed sensor 110. It outputs a control signal for improving shimmy vibration.

That is, the controller 120 compares the vehicle speed detected by the vehicle speed sensor 110 with a preset vehicle speed, and then changes the steering wheel torsional vibration frequency according to the comparison result to perform shimmy vibration. It outputs a control signal for improvement.

Accordingly, the hydraulic pressure generating unit 130 generates a predetermined hydraulic pressure according to the control signal output from the control unit 120.

Then, the shimmy vibration improving unit 160 is mounted on a steering wheel spoke 150 of the steering wheel 140 to steer according to a predetermined hydraulic pressure generated by the hydraulic generator 130. Steering wheel torsional vibration frequency is varied to improve shimmy vibration.

That is, the hydraulic piston 161 of the Shimmy vibration improving unit 160 operates according to a predetermined hydraulic pressure generated by the hydraulic generating unit 130.

The first and second weights 162 and 163 are then linked to the operation of the hydraulic backphone 161 to vary the steering wheel torsional vibration frequency to improve shimmy vibration. Let's go. That is, the first and second weights 162 and 163 increase inertia when they move outwardly according to the operation of the hydraulic piston, thereby causing steering wheel torsional vibration. As the hydraulic piston 161 moves inwardly, the radial moment (inertia) decreases to increase the steering wheel sorsional vibration, thereby improving the shimmy vibration.

Accordingly, the first and second springs 162 and 163 are compressed and restored in cooperation with the first and second weights.

However, such a conventional device is to reduce the vibration transmitted to the driver through the steering wheel, but because it detects the vibration of the transmission path without detecting the vibration of the steering wheel, there is a problem that the effect of reducing the vibration is reduced.

The present invention has been invented to solve the above problems, its purpose is to incorporate a vibration sensor and vibration means inside the ring forming the circumference of the steering wheel to effectively reduce the vibration generated during driving, as well as to the driver An object of the present invention is to provide a steering wheel vibration device for a vehicle that can provide information transmission quickly and accurately.

Referring to the characteristic configuration of the present invention for achieving the above object is as follows.

Steering wheel vibration device for a vehicle of the present invention is a wheel vibration sensor installed on one side of the driving wheel to detect the vibration generated in the wheel while driving the vehicle, the vehicle's failure, driving status, driver drowsiness detection and various information transmitted from the outside The controller collects information from the information collecting unit, the wheel vibration sensor and the information collecting unit, and generates a control signal, and is operated by a signal generated by the control unit to reduce vibration of the steering wheel to reduce the fatigue of the driver. It includes a vibrator built into the steering wheel to minimize and vibrate the steering wheel to convey information to the driver.

Referring to the present invention having such characteristics in detail as follows.

Figure 3 is a block diagram showing a vibration reduction and information transmission device according to the present invention, Figure 4 is a cross-sectional view showing a vibration unit according to the present invention.

As referred to herein, the wheel vibration sensor 20 is installed at one side of the driving wheel to detect vibration generated in the wheel while driving the vehicle, and information collection for collecting various kinds of information is selected at the inside of the vehicle. The unit 30 is provided, and the information is a vehicle failure and driving state, a driver's drowsiness state, a cell phone reception state and various traffic conditions, and the like, and the information is collected by each sensor (not shown).

On the other hand, the control unit 10 is provided with a control signal generated by receiving the information of the wheel vibration sensor 20 and the information collecting unit 30, the control unit 10 may be installed separately, but in the vehicle It is desirable to use an installed ECU.

In addition, the steering wheel 50 is operated by a signal generated from the control unit 10 while reducing the vibration of the steering wheel 50 to minimize the driver's fatigue and vibrate the steering wheel 50 to inform the driver. Vibration unit 40 for transmitting the built-in, the vibration unit 40 is provided with a vibrating element 41 in the upper and lower inside of the ring 51 forming the steering wheel 50, the vibrating element Acceleration sensors 42 for sensing the acceleration transmitted to the steering wheel 50 are provided on both side surfaces of the 41.

And both sides of the vibrating element 41 and the acceleration sensor 42 is provided with a spring 51 for elastically supporting it, the upper and lower portions of the vibrating element 41 is filled with an insulator (44) Installed, the insulator 44 is made of a rubber material.

Referring to the present invention configured as described in detail as follows.

First, a process of reducing vibration generated while driving a vehicle is as follows.

In this case, the vibration is detected by the wheel vibration sensor 20 installed in the wheel of the vehicle and at the same time, the acceleration sensor 42 installed in the vibration unit 40 detects the vibration and transmits the vibration to the controller 10. In 10), the detection values of the wheel vibration sensor 20 and the acceleration sensor 42 are checked to generate a control signal such that vibrations having a phase opposite to that of the vibration are generated.

The control signal generated from the control unit 10 is to operate the vibration element 41 installed in the vibration unit 40, the vibration force of the vibration element 41 is a vibration force is reduced as shown in FIG. will be.

On the other hand, the process of delivering the information input to the information collecting unit 30 to the driver as follows.

In this case, when the information generated from the information collecting unit 30 is transmitted to the control unit 10, the control unit 10 generates a control signal corresponding to the type of information, the vibration unit 40 received the control signal Since the vibrating element 41 is vibrated, the vibrating force is transmitted to the driver through the ring 51 of the steering wheel 50.

For example, when the driver's drowsiness is detected or when the mobile phone is received, the period of vibration is set differently to be transmitted to the driver, and the intensity of vibration generated at this time is set above the wheel vibration reduction intensity so that the driver can recognize correctly. To make it possible.

As such, the present invention has a unique effect of minimizing driver's fatigue by reducing vibration generated while driving by incorporating a vibration sensor and a vibration means inside the ring forming the circumference of the steering wheel.

In addition, the present invention has a unique effect of providing the driver with the driving state and various information quickly and accurately.

Claims (3)

Wheel vibration sensor 20 installed on one side of the driving wheel to detect the vibration generated in the wheel while driving the vehicle, and information collection unit for detecting the failure of the vehicle, driving status, driver drowsiness and various information transmitted from the outside 30, the controller 10 which receives the information of the wheel vibration sensor 20 and the information collecting unit 30 to generate a control signal, and is operated by a signal generated from the controller 10 For the vehicle characterized in that it comprises a vibration unit 40 built in the steering wheel 50 to reduce the vibration of the wheel 50 to minimize the driver's fatigue and to transmit information to the driver by vibrating the steering wheel 50 Steering Wheel Vibrator. 2. The steering wheel vibration device for a vehicle according to claim 1, wherein the information collected by the information collection unit is a vehicle breakdown and driving state, a driver's drowsiness, a reception state of a mobile phone, and various traffic conditions. According to claim 1, wherein the vibrator 40 is provided with a vibrating element 41 on the inner upper / lower portion of the ring 51 forming the steering wheel 50, the steering wheel on both sides of the vibrating element 41 An acceleration sensor 42 for sensing the acceleration transmitted to the 50 is provided, and both side surfaces of the vibration element 41 and the acceleration sensor 42 are provided with springs 51 for elastic support, and the vibration element ( 41) the steering wheel vibration device for a vehicle, characterized in that the insulator 44 is filled with a liquid is installed.

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