CN203543572U - Automobile balancing device for preventing side tilting and front tilting of automobile - Google Patents

Abstract

The utility model discloses an automobile balance device for preventing the automobile from leaning sideways and forward. The device includes a sensor module, an electronic control unit ECU, and an air bag. The sensor module includes a wheel speed sensor, a steering wheel sensor, a brake sensor, a wheel speed sensor, and a steering wheel sensor. and the brake sensor are respectively connected to the input end of the electronic control unit ECU. The airbag is arranged between the wheel arm shaft and the vehicle body. The airbag includes a flexible main air chamber connected with the The connection/isolation between the chamber and the rigid auxiliary air chamber is controlled by the air bag solenoid valve. The utility model has the following advantages: 1. It is more accurate and fast, and can better eliminate the forward tilt and roll produced by the car's sudden braking deceleration and turning, so as to increase the comfort of the car; 2. The structure is relatively compact and does not produce Obvious interference movement; using air bag, reasonable price, easy to manufacture.

Description

A car balance device for preventing the car from leaning sideways and leaning forward

technical field

The utility model relates to the technical field of automobiles, in particular to an automobile balance device for preventing the automobile from tilting sideways and leaning forward.

Background technique

Nowadays, with the improvement of people's living standards, people's requirements for the comfort of life are getting higher and higher, and cars have gradually become the mainstream of transportation for people to go to work and travel. However, when the car is decelerating, the car will lean forward due to the inertia, and the passenger will easily lean forward with the vehicle body, which will make the passenger feel uncomfortable; And there is automobile turning balance device in existing automobile balancing device, but can not accomplish automobile also can guarantee the balance of automobile when deceleration brakes simultaneously. Also have to utilize automobile shock absorber to guarantee automobile balance, and this device can not accomplish automobile balance reliably, and the structure that other devices have is very complicated, and what have is disturbed by external force with simple pendulum principle, and is unreliable.

Utility model content

The technical problem to be solved by the utility model is to provide a car balance device for preventing the car from tilting and leaning forward, so as to reduce the problem of leaning forward and leaning forward when the car is decelerating or turning. the goal of.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: an automobile balancing device for preventing the automobile from leaning sideways and forward, including a sensor module, an electronic control unit ECU, and an airbag. The wheel speed sensor, the steering wheel sensor installed on the steering wheel, the brake sensor installed on the brake pedal, the wheel speed sensor, the steering wheel sensor and the brake sensor are respectively connected with the input end of the electronic control unit ECU, the air bag is set Between the wheel arm shaft and the vehicle body, the airbag includes a flexible main air chamber connected with the vehicle body, and a rigid auxiliary air chamber connected with the wheel arm shaft. The valve controls connection/isolation, and the air bag solenoid valve is connected with the electronic control unit ECU.

The electronic control unit ECU is used to judge the driver's braking and turning intention according to the driving speed signal collected by the wheel speed sensor, the steering wheel steering signal collected by the steering wheel sensor, and the brake pedal stepping rate signal, and then control the switch of the airbag solenoid valve action.

A suspension spring is connected between the wheel arm shaft and the vehicle body.

The wheel arm shaft is provided with a suspension shock absorber.

When the solenoid valve of the airbag is opened, the flexible main air chamber of the airbag communicates with the rigid auxiliary chamber; when the electromagnetic valve of the airbag is closed, the flexible main chamber of the airbag communicates with the rigid auxiliary chamber. room is isolated.

The air bag solenoid valve adopts a port switch air valve.

The air bag includes a left front air bag connected between the left front wheel arm shaft and the vehicle body, a left rear air bag connected between the left rear wheel arm shaft and the vehicle body, a right front air bag connected between the right front wheel arm shaft and the vehicle body, a connecting The right rear airbag between the right rear wheel arm shaft and the body.

A balance control method of an automobile balance device for preventing the automobile from leaning sideways and forward, the method comprising the following steps:

a) When braking to decelerate, the electronic control unit ECU compares the vehicle speed (V ₀ ), brake pedal The stepping rate (λ ₀ ) compares and judges the driver's four braking intentions of high-speed slow braking, high-speed sudden braking, low-speed sudden braking and low-speed slow braking. None of the valves are in action, and in the other three states, the electronic control unit ECU outputs a signal to control the closing of all airbag solenoid valves, so that the main air chambers and auxiliary air chambers of all airbags are blocked, the rigidity of the airbags is improved, and the speed of the vehicle is slowed down. degree of roll;

b) When the car is turning, the electronic control unit ECU compares the vehicle speed (V ₀ ) and steering wheel speed (ω ₀ ) Comparing and judging the driver's four turning intentions of high-speed big curve, high-speed small curve, low-speed big curve and low-speed small curve, the electronic control unit ECU ignores the signal when the low-speed big curve occurs, and all airbag solenoid valves do not operate. Others When turning in the three states, the electronic control unit ECU outputs and controls all the airbag solenoid valves to close signals, so that the corresponding airbag main air chamber and auxiliary air chamber are blocked, the airbag rigidity is improved, and the rolling degree of the vehicle is slowed down. .

When the electronic control unit ECU judges that the signal values transmitted by the wheel speed sensor, the brake sensor and the steering wheel sensor do not exceed the preset original value, after a delay of 1 second, the system controls all airbag solenoid valves to continue to open .

The utility model adopts the above-mentioned structure and has the following advantages: 1. The automatic control of the control unit ECU is adopted, which is more accurate and fast, and can better eliminate the forward lean and roll produced by the car's sudden braking, deceleration and turning, and increase the safety of the car. Comfort; 2. The utility model is installed on the wheel arm shaft, does not occupy other spaces of the car, has a relatively compact structure, and does not produce any interference movement; 3. Uses the air bag, which is reasonable in price and easy to manufacture; the air bag control is just a simple switch control, low cost.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail;

Fig. 1 is the structural representation that air bag is connected between wheel arm shaft and vehicle body in the utility model;

Fig. 2 is the structure schematic diagram that balance device is installed on the vehicle in the utility model;

Fig. 3 is a control logic structural block diagram of the present utility model;

In Figures 1 to 3, 1. Wheel speed sensor; 2. Steering wheel; 3. Steering wheel sensor; 4. Brake pedal; 5. Brake sensor; 6. Wheel arm shaft; 7. Body; 8. Flexible main air chamber; 9. Rigid secondary air chamber; 10. Airbag solenoid valve; 11. Suspension spring; 12. Suspension shock absorber.

Detailed ways

As shown in Fig. 1～Fig. 3, a kind of automobile balance device that prevents automobile side tilting, forward tilting, comprises sensor module, electronic control unit ECU, air bag, described sensor module comprises the wheel speed sensor 1 that is installed on the wheel side, The steering wheel sensor 3 installed on the steering wheel 2, the brake sensor 5 installed on the brake pedal 4, the wheel speed sensor 1, the steering wheel sensor 3 and the brake sensor 5 are respectively connected to the input end of the electronic control unit ECU, and the airbag is arranged on the wheel arm axis. 6 and the vehicle body 7, the airbag includes a flexible main air chamber 8 connected with the vehicle body, a rigid secondary air chamber 9 connected with the wheel arm shaft 6, and the airbag electromagnetic The valve 10 controls communication/isolation, and the airbag solenoid valve 10 is connected with the electronic control unit ECU. The wheel speed sensor is responsible for measuring the driving speed signal of the car and transmitting it to the electronic control unit ECU; the steering wheel sensor is installed on the steering wheel, and by monitoring the rotation speed signal of the steering wheel, it reflects the driver's turning intention and transmits it to the electronic control unit The braking behavior sensor reflects the driver's turning intention by monitoring the brake pedal stepping speed and transmits it to the electronic control unit; the electronic control unit ECU controls whether the main and auxiliary air chambers are connected by controlling the switch, Indirectly control the change of the stiffness of the right rear airbag.

The electronic control unit ECU is the core controller of the utility model, and its function is to receive and analyze and process the signals of various parts transmitted from the sensor part, and send out control signals to control the switching action of the corresponding airbag solenoid valve. The electronic control unit ECU monitors the driver's braking and turning intentions through wheel sensors, steering wheel sensors, and braking behavior sensors, and uses the control unit EUC to reliably control the four airbags to slow down the tilt of the vehicle body.

The electronic control unit ECU is used to judge the driver's braking and turning intention according to the driving speed signal collected by the wheel speed sensor 1, the steering wheel turning signal collected by the steering wheel sensor 3, and the pedaling speed signal of the brake pedal 4, and then control the airbag solenoid valve 10. switch action. A suspension spring 11 is connected between the wheel arm shaft 6 and the vehicle body 7 . A suspension shock absorber 12 is provided on the wheel arm shaft 6 . When the airbag solenoid valve 10 is open, the flexible main chamber 8 of the airbag communicates with the rigid secondary chamber 9; when the airbag solenoid valve 10 is closed, the flexible main chamber 8 of the airbag is isolated from the rigid secondary chamber 9. The air bag solenoid valve 10 adopts a port switch air valve.

The air bag includes a left front air bag connected between the left front wheel arm shaft and the body, a left rear air bag connected between the left rear wheel arm shaft and the body, a right front air bag connected between the right front wheel arm shaft and the body, and a right rear air bag connected between the right rear wheel arm shaft and the body. Right rear airbag between wheel arm shaft and body.

The balance control method of the vehicle balance device for preventing the vehicle from tilting sideways and forward tilting, the method includes the following steps:

When the car is running normally, all airbag solenoid valves are in the normally open state, and the corresponding airbag main air chamber is connected with the auxiliary air chamber. At this time, the stiffness of each airbag is in a low state, and the force transmission between the axle and the body mainly depends on Suspension system, while airbags transmit less force;

When braking to decelerate, the electronic control unit ECU compares the vehicle speed V ₀ and the brake pedal depressing rate λ ₀ with the original setting according to the vehicle speed signal transmitted by the wheel speed sensor and the brake sensor and the signal data of the brake pedal depression. Compare and judge the driver's four braking intentions of high-speed slow braking, high-speed sudden braking, low-speed sudden braking and low-speed slow braking. In the three states, the electronic control unit ECU outputs signals to control the closing of the electromagnetic valves of each airbag, so that the main air chamber and auxiliary air chamber of each airbag are blocked, the stiffness of all airbags is improved, and the force between the axle and the vehicle body is improved. The transmission depends on the joint action of the suspension system and the airbag, and its effect is equivalent to improving the suspension stiffness of the front wheel of the car, which can slow down the effect of the car's forward tilt caused by braking deceleration; by comparing with the original set speed V ₀ , Brake pedal stepping speed λ ₀ compares and judges the driver's high-speed slow brake, high-speed sudden brake, low-speed sudden brake and low-speed slow brake four kinds of braking intentions as shown in Table 1:

Table 1

When the car is turning, the electronic control unit ECU judges the driver by comparing the vehicle speed V 0 and the steering wheel speed ω 0 with the set original comparison vehicle speed V ₀ and steering wheel speed ω ₀ according to the vehicle speed signal transmitted by the wheel speed sensor and the steering wheel sensor and the steering wheel speed signal data. There are four kinds of turning intentions: high-speed large bend, high-speed small bend, low-speed large bend, and low-speed small bend. When the low-speed large bend occurs, the electronic control unit ECU ignores the signal, and all airbag solenoid valves do not operate. When turning in the other three states , then the electronic control unit ECU outputs a signal to control the closing of each airbag solenoid valve, so that the corresponding airbag main air chamber and auxiliary air chamber are blocked, and the stiffness of the airbag is improved, which can slow down the roll phenomenon caused by the turning of the car, and increase Car comfort. By comparing with the set original vehicle speed V ₀ and steering wheel speed ω ₀ , judge the driver’s four turning intentions of high-speed big curve, high-speed small curve, low-speed big curve and low-speed small curve, as shown in Table 2:

V ₀ (Km/h) ω ₀ (rad/s) high speed bend ≥60 <π/2 High speed small bend ≥60 ≥π/2 low speed corner <60 <π/2 low speed corner <60 ≥π/2

Table 2

When the electronic control unit ECU judges that the signal values transmitted by the wheel speed sensor, the brake sensor and the steering wheel sensor do not exceed the preset original value, after a delay of 1 second, the system controls all airbag solenoid valves to continue to open .

During the original design of the utility model, it is possible to match different vehicle types by changing the ratio of the volumes of the main air chambers and auxiliary air chambers of each airbag. Compared with vehicle speed (V ₀ ), steering wheel speed (ω ₀ ), and brake pedal pedaling rate (λ ₀ ), the size is set by the car manufacturer according to different models or usage environments, and can also be set according to the special requirements of the driver. As the basis for the electronic control unit to judge the driver's braking and turning intentions, it can meet the requirements of different drivers.

The utility model adjusts the ratio of the volumes of the main air chambers and auxiliary air chambers of each airbag to coordinate the uncoordinated relationship between the interference of the air pressure inside the airbag to the suspension system and the working reliability of the utility model. The input terminal of the electronic control unit ECU is connected with an input module, which can manually input the comparative vehicle speed, steering wheel speed and brake pedal stepping rate to change the basis for the electronic control unit ECU to judge the driver's intention of braking and turning, so as to meet different driving requirements. staff request.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above methods, as long as the various improvements of the technical solution of the utility model are adopted, or directly applied to other applications without improvement. Occasions, all within the protection scope of the present utility model.

Claims (7)

1. one kind prevents that automobile side from tilting, the automobile balancing unit leaning forward, it is characterized in that: comprise sensor assembly, electronic control unit ECU, air bag, described sensor assembly comprises the wheel speed sensors (1) that is arranged on wheel side, be arranged on the steering wheel sensor (3) on bearing circle (2), be arranged on the brake sensor (5) on brake pedal (4), described wheel speed sensors (1), steering wheel sensor (3) and brake sensor (5) are connected with the input end of electronic control unit ECU respectively, described air bag is arranged between wheel arm axle (6) and vehicle body (7), described air bag comprises the Flexible Main air chamber (8) being connected with vehicle body, the rigidity accessory air-space (9) being connected with wheel arm axle (6), between described Flexible Main air chamber (8) and rigidity accessory air-space (9), by air bag electromagnetic valve (10), control and be communicated with/isolate, described air bag electromagnetic valve (10) is connected with electronic control unit ECU.

2. a kind of automobile balancing unit that prevents that automobile side from tilting, leaning forward according to claim 1, it is characterized in that: described electronic control unit ECU, for the road speed signal gathering according to wheel speed sensors (1), wheel steering signal, the brake pedal (4) that steering wheel sensor (3) gathers, trample rate signal, brake, the turning purpose of judgement chaufeur, control the switch motion of air bag electromagnetic valve (10) then.

3. a kind of automobile balancing unit that prevents that automobile side from tilting, leaning forward according to claim 1, is characterized in that: between described wheel arm axle (6) and vehicle body (7), be connected with axle spring (11).

4. according to a kind of automobile balancing unit that prevents that automobile side from tilting, leaning forward described in claim 1 or 3, it is characterized in that: described wheel arm axle (6) is provided with suspension bumper (12).

5. a kind of automobile balancing unit that prevents that automobile side from tilting, leaning forward according to claim 1, it is characterized in that: under described air bag electromagnetic valve (10) open mode, the Flexible Main air chamber (8) of described air bag is connected with rigidity accessory air-space (9), under described air bag electromagnetic valve (10) closed condition, the Flexible Main air chamber (8) of described air bag is isolated with rigidity accessory air-space (9).

6. a kind of automobile balancing unit that prevents that automobile side from tilting, leaning forward according to claim 1 or 5, is characterized in that: described air bag electromagnetic valve (10) adopts port switch air valve.

7. a kind of automobile balancing unit that prevents that automobile side from tilting, leaning forward according to claim 1, is characterized in that: described air bag comprises the left front air bag that is connected between front left wheel arm axle and vehicle body, be connected to left back air bag between left back wheel arm axle and vehicle body, be connected to right front air bag between right front wheel arm axle and vehicle body, be connected to the right back air bag between right rear wheel arm axle and vehicle body.

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