Automobile shock absorber control panel with hardness adjusting function

Abstract

The utility model relates to an automobile shock absorber control panel with hardness adjustment, which is realized by an adjusting panel 7 and a control panel 10, and the adjusting panel 7 is provided with an adjusting knob 1 with a switch and a rotary encoder function and a display screen 2. The control panel 10 is mainly composed of a power supply circuit 9, a control chip 3, an amplification circuit 4, an electromagnetic valve 6, a photoelectric isolation circuit 8 and a protection circuit 5.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile shock absorber, and specifically relates to an automobile shock absorber control panel with hardness adjustment. BACKGROUND

[0002] The core component electromagnetic valve of the high-end composite shock absorber can adjust the flow area of liquid through current, so that the effect of adjusting damping force is achieved.

[0003] The high-end composite shock absorber can realize the optimization of comfort and safety and control stability of the automobile. For bumpy road conditions and low-speed driving, the shock absorber outputs small damping to realize the comfort of the automobile. For flat road conditions and high-speed driving, the shock absorber outputs large damping to realize the stability of the vehicle body and ensure safety. The performance index is more than 4 million times of fatigue performance. The tensile strength is greater than or equal to 60 kn, and the electrostatic friction performance is less than or equal to 70 n. The damping force change range is 500 n-4500 n. The response time is 25 ms.

[0004] The core component of the high-end composite shock absorber system is composed of a central control unit shock absorber, an electromagnetic valve and the like. The shock absorber is based on the structure of a traditional hydraulic shock absorber. Oil is injected into the shock absorber, and there are two chambers inside and outside. The inner chamber is divided into two chambers by a piston. The oil can flow between the chambers and the pores of the piston. When the wheels are jolted, the piston in the shock absorber moves up and down in the inner chamber. The oil in the chamber flows back and forth between the chambers under the action of the reciprocating motion of the piston. The flow of oil molecules in the chamber pores and the piston pores forms resistance to the up-and-down movement of the piston, converts the power of the shock into heat, and the heat is dissipated to the air through the shock absorber shell. Thus, the shock absorption process of the shock absorber is realized.

[0005] The vehicle using the high-end composite shock absorber system has a shorter braking distance than the vehicle without the system. The current shock absorber lacks hardness adjustment control, and the comfort is not strong. Therefore, the utility model provides an automobile shock absorber control panel with hardness adjustment, which realizes the hardness adjustment of the shock absorber. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above problems existing in the prior art, the utility model provides an automobile shock absorber control panel with hardness adjustment.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automobile shock absorber with hardness adjustment, the automobile shock absorber control panel is realized by an adjustment panel 7 and a control panel 10. The adjustment panel 7 is provided with an adjustment knob 1 with switch and rotary encoder functions and a display screen 2. The control panel 10 is mainly composed of a power supply circuit 9, a control chip 3, an amplification circuit 4, an electromagnetic valve 6, an optoelectronic isolation circuit 8 and a protection circuit 5.

[0008] The adjustment control steps of the automobile shock absorber control panel are as follows:

[0009] S1, press the adjustment knob of the adjustment panel once to select the mode of adjusting the two front wheels of the automobile, press it again to select the mode of adjusting the two rear wheels of the automobile, and press it again to select the mode of adjusting the four front and rear wheels of the automobile;

[0010] S2, after ten seconds of pressing the adjustment knob, rotate the adjustment knob to select the soft and hard adjustment gears of the automobile shock absorber, rotate it clockwise by one gear to increase the hardness of the automobile shock absorber according to the selected adjustment mode, and rotate it counterclockwise by one gear to reduce the hardness of the automobile shock absorber according to the selected adjustment mode, a total of 16 gears can be selected;

[0011] S3, after selecting the adjustment mode and the gear, the controller in the adjustment panel displays the adjustment mode and the gear on the display screen. For example, F-4 alone indicates that the fourth gear of the front wheel is selected, R-8 alone indicates that the eighth gear of the rear wheel is selected, and F-4 and R-8 are displayed simultaneously, indicating that the four front and rear wheels and the corresponding gears are selected simultaneously;

[0012] S4, the controller in the adjustment panel transmits the selected adjustment mode and gear to the control circuit through two-line mode;

[0013] S5, after receiving the control mode and gear data, the control chip generates a PWM wave corresponding to the gear and outputs it to the pin controlling the corresponding wheel;

[0014] S6, the PWM wave is amplified by the peripheral drive circuit on the control circuit board, generating a current corresponding to the gear in the corresponding electromagnetic valve, which drives the corresponding mechanical structure to change the cross-sectional area of the piston aperture, thereby changing the resistance of the oil liquid in the chamber, and further changing the damping of the shock absorber, achieving the adjustment of the hardness of the shock absorber during the driving of the automobile;

[0015] S7, when the PWM wave output by the controller generates a current through the amplification circuit, a self-induction current is generated in the coil of the electromagnetic valve, which is released through the protection circuit and the coil.

[0016] Further, the controller in the adjustment panel in the automobile shock absorber control panel adjustment control step receives three signals of the adjustment knob, the press switch signal, the rotation signal A phase and the rotation signal B phase.

[0017] Further, after the control chip 3 in the control panel 10 receives the adjustment mode and the gear data through the photoelectric isolation circuit 8 in the adjustment control step S5, the control chip 3 generates the PWM wave with different duty cycles at a certain frequency corresponding to the gear data of the mode through calculation, and outputs the wave to the corresponding pin of the control chip 3.

[0018] Further, after the control chip 3 in the control panel 10 receives the adjustment mode and the gear data through the photoelectric isolation circuit 8 in the adjustment control step S5, the control chip 3 generates the PWM wave with different duty cycles at a certain frequency corresponding to the gear data of the mode through calculation, and outputs the wave to the corresponding pin of the control chip 3.

[0019] Technical effects

[0020] The automobile shock absorber control panel can adjust the piston aperture of the shock absorber system, change the cross-sectional area of the piston aperture through the electromagnetic valve, and change the resistance of the oil liquid in the chamber when the flow is constant, so as to realize the change of the damping of the shock absorber.

[0021] In actual driving, when the high-end composite force reducer encounters a bumpy road, the automobile shock absorber control panel can greatly weaken the vibration from the road and the rebound of the spring, so that the vehicle body remains stable. The high-end composite shock absorber can make the vehicle body only fluctuate up and down like a ship in the sea when the wheels are violently shaken, and can improve the damping of the suspension, provide sufficient supporting force, and make the chassis respond more quickly, and improve the controllability of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1It is the schematic view of automobile shock absorber control panel. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail below in combination with the drawings and examples.

[0024] An automobile shock absorber control panel with hardness adjustment, which is realized by an adjusting panel 7 and a control panel 10, the adjusting panel 7 is provided with an adjusting knob 1 with switch and rotary encoder functions and a display screen 2, and the control panel 10 is mainly composed of a power supply circuit 9, a control chip 3, an amplification circuit 4, an electromagnetic valve 6, an optoelectronic isolation circuit 8 and a protection circuit 5.

[0025] The working principle of the control panel is as follows: when the adjusting knob 1 is pressed once, the controller PY32F002AF15P in the adjusting panel 7 receives a pulse, and the current adjustment mode is determined according to the number of pulses sent by the adjusting knob. When the adjusting knob 1 is rotated, the internal counter of the controller PY32F002AF15P in the adjusting panel 7 increases or decreases the current value S of the current counter, so as to determine the duty cycle. The controller PY32F002AF15P sends the adjustment mode and the value of the current counter to the control chip FT600E211-RB on the control panel 10, and the control chip FT600E211-RB has the function of outputting four-way PWM waves. The control chip FT600E211-RB first sets the frequency of the control output PWM wave, that is, sets the period value T1 of the output PWM wave, changes the width T2 of the PWM wave output according to the current value S sent by the controller PY32F002AF15P, and S becomes larger, T2 also becomes larger, and the duty cycle of the output PWM wave becomes larger. The front wheel PWM wave is output from the 5th and 4th pins of the controller, and then is sent to the field effect tubes Q6 and Q5 after current limiting by R22 and R20, so that Q6 and Q5 are turned on and turned off according to the PWM wave form. During the conduction period, the positive current is formed through the coils of the electromagnetic valves A and B connected in series. During the off period of Q6 and Q5, the self-induction current is conducted through the Schottky diodes D6 and D5 due to the self-induction effect of the coils of the electromagnetic valves A and B, so as to form a continuous positive current. The larger the duty cycle of the PWM wave is, the larger the equivalent current flowing through the coils is, and then the front wheel shock absorber controlled by the magnetic valves A and B is softer. During the conduction and continuous current period of the Schottky diodes D6 and D5, if the duty cycle of the output PWM wave is large, the current flowing through is also large, and the heat generated by D6 and D5 is also more. The heat sink installed on D6 and D5 can prevent them from overheating.

[0026] The operation flow of the automobile shock absorber control panel;

[0027] 1. Press the adjusting knob of the adjusting panel once to select the adjustment mode of the two front wheels of the automobile, press it again to select the adjustment mode of the two rear wheels of the automobile, and press it again to select the adjustment mode of the four wheels of the automobile.

[0028] 2. After the press end of the adjustment knob for ten seconds, rotate the adjustment knob, select the soft and hard adjustment position of the automobile shock absorber, rotate clockwise one position, increase one position according to the adjustment mode control the hardness of the automobile shock absorber, rotate counterclockwise one position, reduce one position according to the adjustment mode control the hardness of the automobile shock absorber, a total of 16 positions can be selected;

[0029] 3. When the control mode and the position are selected, the controller in the adjustment panel will display the mode and the position on the display screen. For example, F-4 alone indicates that the fourth position of the front wheel is selected, R-8 alone indicates that the eighth position of the rear wheel is selected, and F-4 and R-8 are displayed simultaneously, indicating that the four front and rear wheels and the corresponding positions are selected simultaneously;

[0030] 4. The controller in the adjustment panel transmits the selected adjustment mode and position to the control panel through a two-wire mode;

[0031] 5. After receiving the adjustment mode and position data, the control chip generates a PWM wave corresponding to the position and outputs it to the pin controlling the corresponding wheel;

[0032] 6. The PWM wave is amplified by the peripheral drive circuit on the control panel, and a current corresponding to the position is generated in the corresponding electromagnetic valve. The electromagnetic valve drives the corresponding mechanical structure to change the cross-sectional area of the piston aperture, thereby changing the resistance of the oil liquid in the chamber, and further changing the damping of the shock absorber, so as to realize the adjustment of the softness and hardness of the shock absorber during the driving of the automobile;

[0033] 7. When the PWM wave output by the controller generates a current through the amplification circuit, a self-induction current is generated in the coil of the electromagnetic valve, which is released through the protection circuit and the coil.

[0034] The utility model is not limited to the above-mentioned best implementation, and anyone can derive other various forms of products under the inspiration of the utility model, but no matter any change in shape or structure, any technical scheme with the same or similar technology as the present application falls within the protection scope of the utility model.

Claims

1. A control board for a vehicle shock absorber having a hardness adjustment, characterized by: The automobile shock absorber control panel is realized by an adjusting panel (7) and a control panel (10), the adjusting panel (7) is provided with an adjusting knob (1) with switch and rotary encoder functions and a display screen (2), and the control panel (10) is mainly composed of a power supply circuit (9), a control chip (3), an amplification circuit (4), an electromagnetic valve (6), an optical isolation circuit (8) and a protection circuit (5); The adjusting and controlling steps of the automobile shock absorber control panel are as follows: S1, press the adjusting knob of the adjusting panel once to select the mode of simultaneously adjusting the two front wheels of the automobile, press it again to select the mode of simultaneously adjusting the two rear wheels of the automobile, and press it again to select the mode of simultaneously adjusting the four wheels of the automobile; S2, after ten seconds of pressing the adjusting knob, rotate the adjusting knob to select the soft and hard adjusting gears of the automobile shock absorber, rotate it clockwise by one gear to increase the hardness of the automobile shock absorber according to the selected adjusting mode, rotate it counterclockwise by one gear to reduce the hardness of the automobile shock absorber according to the selected adjusting mode, and a total of 16 gears can be selected; S3, after selecting the adjusting mode and the gear, the controller in the adjusting panel displays the adjusting mode and the gear on the display screen, such as separately displaying F-4 to select the fourth gear of the front wheel, separately displaying R-8 to select the eighth gear of the rear wheel, and simultaneously displaying F-4 and R-8 to select the four wheels and the corresponding gears; S4, the controller in the adjusting panel transmits the selected adjusting mode and the gear to the control circuit through two-wire mode; S5, after receiving the control mode and the gear data, the control chip generates a PWM wave corresponding to the gear and outputs it to the pin controlling the corresponding wheel; S6, the PWM wave is amplified by the peripheral drive circuit on the control circuit board to generate a current corresponding to the gear in the corresponding electromagnetic valve, and the electromagnetic valve drives the corresponding mechanical structure to change the cross-sectional area of the piston aperture, thereby changing the resistance of the oil in the chamber, and further changing the damping of the shock absorber, so as to realize the adjustment of the softness and hardness of the shock absorber during the driving of the automobile; When the PWM wave output by the controller generates a current through the amplification circuit, a self-induction current is generated in the coil of the electromagnetic valve, which is released through the protection circuit and the coil.

2. The automotive shock absorber control board with hardness adjustment according to claim 1, characterized in that: In the adjusting and controlling steps of the automobile shock absorber control panel, the controller in the adjusting panel receives three signals of the adjusting knob, the pressing switch signal, the rotating signal A phase and the rotating signal B phase, the A phase leads the B phase by 90 degrees when rotating clockwise, and the B phase leads the A phase by 90 degrees when rotating counterclockwise, the controller in the control panel receives the continuous pressing switch signal, calculates three control modes and cycles, receives the A and B signals, calculates and judges whether the adjusting knob rotates clockwise or counterclockwise, thereby increasing or decreasing the corresponding gear value in the corresponding adjusting mode, and the controller displays the adjusting mode and the gear data on the display screen, and sends the data to the control chip (3) of the control panel through two-wire mode (one wire is a clock line and the other wire is a data line).

3. The automotive shock absorber control board with hardness adjustment of claim 2, wherein: The control chip (3) in the control panel (10) in the adjustment control step S5 receives the adjustment mode and gear data through the photoelectric isolation circuit (8), and then the control chip (3) generates the PWM wave with different duty cycles at a certain frequency corresponding to the gear data of the mode through calculation, and outputs the wave to the corresponding pin of the control chip (3), and the power supply circuit (9) provides power supply for the control chip (3).

4. The automotive shock absorber control board with hardness adjustment of claim 2, wherein: The peripheral amplification circuit (4) on the control panel (10) in the adjustment control method steps S6-S7 receives the PWM wave of the control chip (3), amplifies the PWM wave, generates the current corresponding to the gear in the corresponding electromagnetic valve (6), and drives the corresponding mechanical structure to control the opening of the oil port in the shock absorber, thereby controlling the softness and hardness of the automobile shock absorber during driving. The PWM wave current output by the amplification circuit (4) generates a self-induction current in the electromagnetic valve (6), which is released through the Schottky diode protection circuit (5) and the coil of the electromagnetic valve (6).

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