KR200167535Y1 - Speed detecting structure of anti-lock brake system - Google Patents

Speed detecting structure of anti-lock brake system Download PDF

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Publication number
KR200167535Y1
KR200167535Y1 KR2019950026713U KR19950026713U KR200167535Y1 KR 200167535 Y1 KR200167535 Y1 KR 200167535Y1 KR 2019950026713 U KR2019950026713 U KR 2019950026713U KR 19950026713 U KR19950026713 U KR 19950026713U KR 200167535 Y1 KR200167535 Y1 KR 200167535Y1
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South Korea
Prior art keywords
wheel
speed sensor
brake system
wheel speed
lock brake
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KR2019950026713U
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Korean (ko)
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KR970013334U (en
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황정연
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류정열
기아자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/329—Systems characterised by their speed sensor arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/10—ABS control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/303—Speed sensors
    • B60Y2400/3032—Wheel speed sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

본 고안은 자동차의 앤티록브레이크시스템의 속도감지부 구조에 관한 것으로, 종래에는 휠 속도 센서(11)의 내부에 자성물질인 극편(5)이 내장되어 있으므로 금속성의 이물질이나 먼지등이 극편(5)에 부착되는 경우가 발생되며 이와같은 경우 톤휠(10)의 회전에 따른 극편(5)의 자속의 밀도가 저하되며 따라서 센서코일에서 발생되는 전압이 저하되어 휠 속도 센서(11)의 감도가 떨어지게 되는 문제가 발생되었다.The present invention relates to the structure of the speed sensing unit of the anti-lock brake system of a vehicle. In the related art, since the magnetic pole piece (5), which is a magnetic material, is embedded in the wheel speed sensor (11), metallic foreign matters or dust, etc. In this case, the density of the magnetic flux of the pole piece 5 decreases due to the rotation of the tone wheel 10. Therefore, the voltage generated from the sensor coil is lowered, thereby decreasing the sensitivity of the wheel speed sensor 11. A problem has occurred.

본 고안은 자동차의 앤티록브레이크시스템의 속도감지부의 구조에 있어서, 톤휠(10)을 차체에 접지시켜 - 극을 갖게하고 휠 속도 센서(11)의 선단에 +극 단자를 설치하여 휠 속도 센서(11)의 +극 단자가 톤휠(10)의 이빨(13)과는 접촉되지만 톤휠(10)의 골(14)과는 접촉되지 않도록 하여 교류신호를 발생시키도록 설치된 것이다.According to the present invention, in the structure of the speed sensing unit of the anti-lock brake system of a vehicle, the tone wheel 10 is grounded to the vehicle body to have a pole, and a + pole terminal is installed at the tip of the wheel speed sensor 11 to provide a wheel speed sensor ( 11) the + pole terminal is installed to generate an AC signal by contacting the teeth 13 of the tone wheel 10, but not in contact with the valleys 14 of the tone wheel 10.

따라서 본 고안에 따르면 톤휠을 차체의 일단에 접지시키고 휠 속도 센서에 +단자를 설치하여 제동감속을 감지하도록 하므로서 휠 속도 센서의 선단부에 금속성 이물질이나 먼지등이 부착되는 것을 방지하여 앤티록브레이크시스템의 성능을 향상시킬 수 있는 효과를 가져올 수 있다.Therefore, according to the present invention, the tone wheel is grounded at one end of the vehicle body and the + terminal is installed at the wheel speed sensor to detect braking deceleration, thereby preventing metallic foreign substances or dust from adhering to the tip of the wheel speed sensor. This can have the effect of improving performance.

Description

앤티록브레이크시스템의 속도감지부 구조Structure of speed sensing part of anti-lock brake system

제1도는 종래 앤티록브레이크시스템의 장착된 자동차를 보인 사시도.1 is a perspective view showing a vehicle equipped with a conventional anti-lock brake system.

제2도는 종래 앤티록브레이크시스템의 속도감지부를 보인 사시도.2 is a perspective view showing a speed detection unit of the conventional anti-lock brake system.

제3도는 종래 앤티록브레이크시스템의 속도감지부를 보인 측면도.3 is a side view showing a speed detection unit of the conventional anti-lock brake system.

제4도는 본 고안의 앤티록브레이크시스템의 속도감지부를 보인 사시도.4 is a perspective view showing a speed detection unit of the anti-lock brake system of the present invention.

제5도는 본 고안의 앤티록브레이크시스템의 속도감지부를 보인 측면도.5 is a side view showing a speed detection unit of the anti-lock brake system of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 톤휠 11 : 휠 속도센서10: tone wheel 11: wheel speed sensor

13 : 이빨 14 : 골13: Tooth 14: Goal

15 : 백플레이트15: backplate

본 고안은 앤티록브레이크시스템의 속도감지부 구조에 관한 것으로서, 더욱더 상세하게는 톤휠을 차체의 일단에 접지시키고 휠 속도센서에 +단자를 설치하여 교류신호를 발생시켜 제동감속을 감지하도록 하여 휠 속도센서의 선단부에 금속성 이물질이나 먼지등이 부착되는 것을 방지할 수 있는 앤티록브레이크시스템의 속도감지부 구조에 관한 것이다.The present invention relates to the structure of the speed sensing unit of the anti-lock brake system. More specifically, the tone wheel is grounded at one end of the vehicle body and the + terminal is installed at the wheel speed sensor to generate an AC signal to detect the braking deceleration. This invention relates to a structure of a speed sensing unit of an anti-lock brake system that can prevent metallic foreign substances or dust from adhering to the tip of the vehicle.

자동차의 앤티록브레이크시스템은 전자제어에 의하여 미끄러운 노면에서 브레이킹 하여도 타이어가 로크되지 않고, 차체의 방향 안정을 유지하는 장치를 말하며, 노면이 젖어있을 때 급브레이크를 걸면 바퀴가 로크되어 차체가 옆으로 미끄러질 수 있는데, 이것은 타이어가 로크되어 회전을 멈추면 타이어에 방향성이 없어지기 때문이며, 이것을 방지하기 위하여 타이어를 로크시키지 않고, 로크 직전에 회전을 계속하도록 차체의 감속도와 타이어의 회전을 감지하고 양쪽의 감속도를 비교하여, 타이어의 감속도가 커지면 휠 실린더에 작용되는 유압을 감소시켜 로크를 방지하도록 되어 있다.The vehicle's anti-lock brake system is a device that does not lock tires even when braking on slippery roads by electronic control, and keeps the vehicle's direction stable.When the road surface is wet, when the brakes are applied, the wheels are locked so that the body This is because when the tire is locked and stops rotating, the tire loses its directionality. To prevent this, the tire is not locked and the vehicle detects the deceleration of the body and the tire's rotation to continue turning just before locking. When the deceleration of the tire increases, the hydraulic pressure acting on the wheel cylinder is reduced to prevent the lock.

따라서 앤티록브레이크시스템은 갑작스런 제동, 미끄러운 노면에서의 제동시 4개의 바퀴가 잠기지 않도록 4개의 휠 실린더 유압을 제어하여 최적의 도로조건에서 차량의 안전성을 유지한다.Therefore, the anti-lock brake system maintains the safety of the vehicle under optimal road conditions by controlling four wheel cylinder hydraulic pressures so that the four wheels are not locked during sudden braking or braking on slippery roads.

예시도면 제1도는 종래의 앤티록브레이크시스템이 장착된 자동차를 보인 사시도로서, 일반적인 앤티록브레이크시스템의 구성부품 및 기능을 보면 휠 속도센서(1)와 스위치 입력에서부터 신호를 받아 모듈레이터(2)에 신호를 보내 적절히 브레이크 유압을 조절하는 ECU(3)와, ECU(3)의 신호에 따라 각 바퀴의 휠 실린더에 전달되는 유압을 조절하는 역할을 하며, 프로포셔닝 밸브, 체크밸브, 솔레노이드밸브, 리저브, 펌프, 어큐뮬레이터로 구성되는 모듈레이터(2)와, 앞 뒤 4 바퀴에 각각 설치되어 바퀴의 회전속도를 감지하여 ECU(3)에 전달하는 휠 속도센서(1)와, 원형둘레에 요철형상의 이빨이 형성되어 차축과 함께 회전하는 톤휠(4)로 이루어져 있다.1 is a perspective view of a vehicle equipped with a conventional anti-lock brake system. Referring to the components and functions of a conventional anti-lock brake system, the modulator 2 receives signals from a wheel speed sensor 1 and a switch input. ECU (3) which sends a signal to properly adjust the brake hydraulic pressure, and controls the hydraulic pressure transmitted to the wheel cylinder of each wheel in accordance with the signal of the ECU (3), proportioning valve, check valve, solenoid valve, Modulator (2) consisting of a reservoir, a pump, and an accumulator, a wheel speed sensor (1) installed on each of the front and rear four wheels to sense the rotational speed of the wheel and transmit it to the ECU (3), Teeth are formed and consists of a tone wheel 4 that rotates with the axle.

특히 톤휠과 휠 속도센서로 이루어진 속도감지부의 작용은 예시도면 제2도 내지 제3도에서 나타낸 것과 같이, 톤휠(4)과 휠 속도센서(1) 사이에 통상 1-2mm의 에어캡이 유지되어 톤휠(4)의 각 이빨이 휠 속도센서(1)에 근접하게 되면 휠 속도센서(1)에 내장된 자성체의 극편(5) 주위의 자속선이 변화하여 자속이 더욱 강하게 되며, 이 자속선 변화가 ECU(3)에 번갈아 가며 입력되는 센서코일의 전압상승을 유도한다.In particular, the action of the speed sensing unit composed of the tone wheel and the wheel speed sensor is as shown in FIGS. 2 to 3 of the drawings, and typically an air cap of 1-2 mm is maintained between the tone wheel 4 and the wheel speed sensor 1. When the teeth of the tone wheel 4 are close to the wheel speed sensor 1, the magnetic flux line around the pole piece 5 of the magnetic material embedded in the wheel speed sensor 1 changes, so that the magnetic flux becomes stronger. Alternately induces an increase in the voltage of the sensor coil input to the ECU 3.

또한 톤휠(4)의 각 이빨이 휠 속도센서(1)와 정렬되면 극편(5)의 자속선의 변화가 멈추게 되고, 이 시점에서 자석이 최대로 강하게 되며 자속변화가 없음으로 인해 센서코일과 ECU(3) 사이의 전압신호가 0이며, 톤휠(4)의 각 이빨이 휠 속도센서(1)의 극편(5)에서 멀어지게 되면 극편(5) 주위의 자속선 변화가 약해지며 이 때문에 센서코일의 전압 강하가 유도되어 톤휠(4)의 골이 극편(5)의 중앙을 지나면 자속 변화가 없기 때문에 전압신호는 다시 0이 된다.In addition, when the teeth of the tone wheel 4 are aligned with the wheel speed sensor 1, the change of the magnetic flux line of the pole piece 5 stops. At this point, the magnet becomes the strongest and there is no change in the magnetic flux. 3) If the voltage signal between 0 and each tooth of the tone wheel 4 moves away from the pole piece 5 of the wheel speed sensor 1, the change of the magnetic flux line around the pole piece 5 is weakened, which causes the When the voltage drop is induced so that the valley of the tone wheel 4 passes through the center of the pole piece 5, there is no change in magnetic flux, so the voltage signal becomes zero again.

이때 톤휠(4)의 다음 이빨은 극편(5)에 근접하게 됨으로써 교류신호의 발전과정을 반복하게 되며, ECU(3)는 4개의 개별적인 교류신호를 비교하여 제동감속을 감지하게 되는 것이다.At this time, the next tooth of the tone wheel 4 is closer to the pole piece 5 to repeat the development process of the AC signal, the ECU (3) by comparing the four individual AC signals to sense the braking deceleration.

그런데 종래의 앤티록브레이크시스템의 속도감지부 구조에서는 휠 속도센서(1)의 내부에 자성물질인 극편(5)이 내장되어 있으므로 금속성의 이물질이나 먼지등이 극편(5)에 부착되는 경우가 발생되며 이와 같은 경우 톤휠(10)의 회전에 따른 극편(5)에 자속의 밀도가 저하되어 휠 속도센서(1)의 감도가 떨어지게 되는 문제가 발생되었다.However, in the structure of the speed detecting unit of the conventional anti-lock brake system, since the magnetic pole piece 5, which is a magnetic material, is embedded in the wheel speed sensor 1, metallic foreign matter or dust may be attached to the pole piece 5. In such a case, the density of the magnetic flux is lowered on the pole piece 5 according to the rotation of the tone wheel 10, thereby causing a problem that the sensitivity of the wheel speed sensor 1 is lowered.

따라서 본 고안은 이와 같은 종래의 문제점을 해결하기 위하여 고안한 것으로, 톤휠을 차체에 접지시켜 -극을 갖게하고 휠 속도센서의 단면에 +극 단자를 설치하여 +극 단자가 톤휠의 이빨과는 접지되지만 톤휠의 골과는 접촉되지 않도록 하여 교류전류신호를 발생함으로서 휠 속도센서의 선단부에 금속성의 이물질이나 먼지등이 자성에 의해 부착되지 않도록 하는 앤티록브레이크시스템의 속도감지부를 제공하는 데 본 고안의 목적이 있다.Therefore, the present invention was devised to solve such a conventional problem. The grounding of the tone wheel on the vehicle body has a negative pole and the + pole terminal is installed on the cross section of the wheel speed sensor so that the positive pole is grounded with the teeth of the tone wheel. However, by providing the AC current signal by avoiding contact with the valley of the tone wheel, it provides the speed detection part of the anti-lock brake system to prevent metallic foreign substances or dust from adhering to the tip of the wheel speed sensor. There is a purpose.

이와 같은 목적을 실현하기 위하여 본 고안은 자동차의 앤티록브레이크시스템의 속도감지부 구조에 있어서, 톤휠을 차체에 접지시켜 -극을 갖게하고 휠 속도센서의 선단에 +극 단자를 설치하여 휠 속도센서의 +극 단자가 톤휠의 이빨과는 접촉되지만 톤휠의 골과는 접촉되지 않도록 하는 전기적인 단락에 의해 발생되는 전류파형을 ECU에서 교류신호로 변환하여 제동감속을 감지하도록 하므로서 휠 속도센서의 선단부에 금속성 이물질이나 먼지등이 부착되는 것을 방지할 수 있는 것이다.In order to realize the above object, the present invention has a structure of the speed sensing unit of the anti-lock brake system of an automobile, in which the tone wheel is grounded to the vehicle body to have a -pole and a + pole terminal at the tip of the wheel speed sensor. The + pole terminal is in contact with the teeth of the tone wheel but does not contact the bones of the tone wheel. The current waveform generated by an electrical short circuit is converted into an AC signal by the ECU so that the brake deceleration is detected. This can prevent foreign matter or dust from adhering.

이하, 본 고안의 구성 및 작용효과를 첨부된 예시도면과 함께 상세히 설명하면 다음과 같다.Hereinafter, described in detail with the accompanying drawings and the configuration and effect of the present invention as follows.

본 고안은 자동차의 앤티록브레이크시스템의 속도감지부 구조에 있어서, 톤휠(10)을 차체에 접지시켜 -극을 갖게하고 휠 속도센서(11)의 선단에 +극 단자를 설치하여 휠 속도센서(11)의 +극단자가 톤휠(10)의 이빨(13)과는 접촉되지만 톤휠(10)의 골(14)과는 접촉되지 않도록 하여 교류신호를 발생시키도록 설치된 것이다.The present invention, in the structure of the speed sensing unit of the anti-lock brake system of the automobile, by grounding the tone wheel 10 to the vehicle body to have a-pole and the + pole terminal at the tip of the wheel speed sensor 11 to install the wheel speed sensor (11) It is installed to generate an alternating current signal so that the + terminal of the) is in contact with the teeth 13 of the tone wheel 10 but not in contact with the valleys 14 of the tone wheel 10.

예시도면 제4도는 본 고안에 따른 속도감지부를 보인 정면도 이며, 제5도는 본 고안에 따른 속도감지부를 보인 측면도로써, 톤휠(10)은 타이어와 함께 회전할 수 있도록 너클과 결합되며, 백플레이트(15)는 차체에 고정되는 것으로 백플레이트(15)에 휠 속도센서(11)를 결합시켜 톤휠(10)의 제동감속을 감지하도록 되어 있다.Exemplary drawings Figure 4 is a front view showing a speed sensing unit according to the present invention, Figure 5 is a side view showing a speed sensing unit according to the present invention, the tone wheel 10 is coupled to the knuckle to rotate with the tire, the back plate 15 is fixed to the vehicle body to couple the wheel speed sensor 11 to the back plate 15 so as to sense the braking deceleration of the tone wheel 10.

즉, 톤휠(10)의 표면에는 차체의 일단과 접지시켜 -극을 갖게하고 휠 속도센서(11)에는 +극단자를 설치하고 +극단자를 통해 인가되는 전류를 ECU에서 받아들이게 된다.That is, the surface of the tone wheel 10 is grounded with one end of the vehicle body to have a -pole, and the + speed terminal is installed at the wheel speed sensor 11 and the current applied through the + pole is received by the ECU.

한편, +극단자가 설치된 휠 속도센서(11)는 +극단자가 톤휠(10)의 이빨(13)과 접촉되도록 설치되어 제동시 +극단자가 회전되는 톤휠(10)의 이빨(13)과 접촉될 때에는 전류가 통하게 되어 ECU에 전달되며 +극단자가 톤휠(10)의 골(14)과 정렬될 때에는 휠 속도센서(11)와 톤휠(10)의 접점이 떨어지게 되어 ECU에 전류가 전달되지 않게 된다.On the other hand, the wheel speed sensor 11 with the + pole is installed so that the + pole is in contact with the teeth 13 of the tone wheel 10, when the + pole is in contact with the teeth 13 of the tone wheel 10 is rotated during braking When the current passes through the ECU and the + terminal is aligned with the valleys 14 of the tone wheel 10, the contact between the wheel speed sensor 11 and the tone wheel 10 is dropped so that no current is transmitted to the ECU.

또한 ECU에서는 전류의 단락을 변환시켜 교류신호가 발생되도록 하여 각 바퀴에 설치되는 4개의 개별적인 교루신호를 비교하여 제동감속을 감지하게 된다.In addition, the ECU converts a short circuit to generate an AC signal, and detects braking deceleration by comparing four individual jamming signals installed on each wheel.

본 고안의 속도감지부는 종래 자성체의 극편을 이용한 자속의 변화로 휠의 제동감속을 감지하는 구조가 아니라 톤휠(10)과 휠 속도센서(11)를 -극 및 +극단자로 설치하여 전기적인 단락에 의해 발생되는 전류파형을 ECU에서 교류신호로 변환하여 제동감속을 감지하는 구조이므로 전기적인 단자에 금속성의 이물질이나 먼지 등이 부착되는 문제가 제거된다.The speed sensing unit of the present invention is not a structure for detecting the braking deceleration of the wheel by changing the magnetic flux using the pole piece of the conventional magnetic material, but by installing the tone wheel 10 and the wheel speed sensor 11 as -pole and + pole terminals to prevent electric short circuit. The current waveform generated by the ECU is converted into an AC signal to sense braking deceleration, which eliminates the problem of attaching metallic foreign substances or dust to the electrical terminals.

따라서 본 고안에 따르면 톤휠을 차체의 일단에 접지시키고 휠 속도센서에 +극단자를 설치하여 제동감속을 감지하도록 하므로서 휠 속도센서의 선단부에 금속성 이물질이나 먼지 등이 부착되는 것을 방지하여 앤티록브레이크시스템의 성능을 향상시킬 수 있는 효과를 가져올 수 있다.Therefore, according to the present invention, the tone wheel is grounded at one end of the vehicle body and the + pole terminal is installed at the wheel speed sensor to detect braking deceleration, thereby preventing metallic foreign substances or dust from adhering to the tip of the wheel speed sensor. This can have the effect of improving performance.

Claims (1)

앞 뒤 4 바퀴에 각각 설치되어 바퀴의 회전속도를 감지하여 ECU에 전달하는 휠 속도센서(11)와, 원형둘레에 요철형상의 이빨이 형성되어 차축과 함께 회전하는 톤휠(10)로 이루어진 자동차의 앤티록브레이크시스템의 속도감지부 구조에 있어서, 상기 톤휠(10)을 차체에 접지시켜 -극을 갖게하고, 휠 속도센서(11)의 선단에는 +극 단자를 설치하여 휠 속도센서(11)의 +극단자기 톤휠(10)의 이빨(13)과는 접촉되지만 톤휠(10)의 골(14)과는 접촉되지 않도록 하여 교류신호를 발생시키도록 설치된 것을 특징으로 하는 자동차의 앤티록브레이크시스템의 속도감지부 구조.The wheel speed sensor 11 is installed on each of the four front and rear wheels to detect the rotational speed of the wheel and transmits it to the ECU. In the structure of the speed sensing unit of the anti-lock brake system, the tone wheel 10 is grounded to the vehicle body to have a negative pole, and a positive pole terminal is provided at the tip of the wheel speed sensor 11 to provide a positive pole. Speed sensing unit of the anti-lock brake system of a vehicle, characterized in that it is installed to generate an AC signal by contacting the teeth 13 of the extreme magnetic tone wheel 10 but not the valley 14 of the tone wheel 10. rescue.
KR2019950026713U 1995-09-28 1995-09-28 Speed detecting structure of anti-lock brake system KR200167535Y1 (en)

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KR2019950026713U KR200167535Y1 (en) 1995-09-28 1995-09-28 Speed detecting structure of anti-lock brake system

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KR200167535Y1 true KR200167535Y1 (en) 2000-03-02

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