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KR101282002B1 - Wheel speed sensing device for vehicle - Google Patents

Wheel speed sensing device for vehicle Download PDF

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Publication number
KR101282002B1
KR101282002B1 KR1020090012848A KR20090012848A KR101282002B1 KR 101282002 B1 KR101282002 B1 KR 101282002B1 KR 1020090012848 A KR1020090012848 A KR 1020090012848A KR 20090012848 A KR20090012848 A KR 20090012848A KR 101282002 B1 KR101282002 B1 KR 101282002B1
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KR
South Korea
Prior art keywords
wheel
sensor
disk
wheel speed
vehicle
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Application number
KR1020090012848A
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Korean (ko)
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KR20100093767A (en
Inventor
이세균
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주식회사 만도
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Priority to KR1020090012848A priority Critical patent/KR101282002B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors
    • 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
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

본 발명은 디스크의 회전에 따라 발생되는 복사열로부터 감지센서를 보호할 수 있도록 하는 차량용 휠 속도 감지장치를 제공한다.The present invention provides a vehicular wheel speed sensing device to protect the sensing sensor from radiation heat generated by the rotation of the disk.

본 발명의 실시예에 따른 휠 속도 감지장치는 디스크를 관통하여 휠축에 장착되는 톤휠과, 톤휠에 근접 설치되어 톤휠의 회전속도를 감지하는 감지센서와, 감지센서가 노면상의 이물질에 의해 손상되는 것을 방지하는 더스트커버와, 더스트커버에 장착되어 디스크의 회전에 따라 발생되는 복사열로부터 상기 감지센서를 보호하는 보호부재를 포함하는 것을 특징으로 한다.Wheel speed detection apparatus according to an embodiment of the present invention is a penetrating wheel mounted on the wheel shaft through the disk, the sensor is installed in close proximity to the tone wheel to detect the rotational speed of the tone wheel, and the sensor is damaged by foreign matter on the road surface It is characterized in that it comprises a dust cover for preventing, and a protection member mounted to the dust cover to protect the detection sensor from radiation heat generated by the rotation of the disk.

Description

차량용 휠 속도 감지장치{WHEEL SPEED SENSING DEVICE FOR VEHICLE}Wheel speed sensor for vehicle {WHEEL SPEED SENSING DEVICE FOR VEHICLE}

본 발명은 차량용 휠 속도 감지장치에 관한 것으로, 더욱 상세하게는 디스크의 회전에 따라 발생되는 복사열로부터 감지센서를 보호할 수 있도록 하는 차량용 휠 속도 감지장치에 관한 것이다.The present invention relates to a vehicular wheel speed sensing device, and more particularly to a vehicular wheel speed sensing device to protect the sensing sensor from radiation heat generated by the rotation of the disk.

일반적으로, 차량에는 주행 중 제동력을 발생시킬 때 제동력이 가해진 상태에서 회전하는 휠의 회전수를 감지하여 제동력을 적절하게 가할 수 있는 속도센서 즉, 휠 속도 감지장치가 필수적으로 요구된다. In general, a vehicle requires a speed sensor, that is, a wheel speed sensing device capable of appropriately applying a braking force by detecting a rotational speed of a wheel that rotates in a state where a braking force is applied when generating a braking force during driving.

이러한 휠 속도 감지장치는 휠과 함께 회전하는 디스크의 내측에 마련되어 휠의 회전속도를 감지하게 되는데, 구체적으로 디스크를 관통하는 휠축에 결합되어 디스크의 회전 시 회전되는 톤휠과, 이러한 톤휠에 근접 설치되어 자속의 변화가 발생되는 원리를 이용하여 톤휠의 회전속도를 감지하는 감지센서를 포함하여 구성된다.The wheel speed sensing device is provided inside the disk that rotates with the wheel to detect the rotational speed of the wheel. Specifically, the wheel wheel coupled to the wheel shaft penetrating the disk rotates when the disk is rotated, and is installed in close proximity to the tone wheel. It consists of a sensor that detects the rotational speed of the tone wheel using the principle that the change in the magnetic flux occurs.

그러나, 이러한 휠 속도 감지장치는 디스크의 회전에 따라 발생되는 복사열 이 감지센서에 전달되어 이 감지센서가 손상되는 문제점이 있다. However, such a wheel speed sensor has a problem that the heat radiation generated by the rotation of the disk is transmitted to the sensor to damage the sensor.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 디스크의 회전에 따라 발생되는 복사열에 의해 감지센서가 손상되는 것을 방지할 수 있는 차량용 휠 속도 감지장치를 제공하는데 있다.The present invention is to solve such a problem, it is an object of the present invention to provide a wheel speed sensor for a vehicle that can prevent the detection sensor from being damaged by the radiant heat generated by the rotation of the disk.

본 발명의 실시예에 따른 휠 속도 감지장치는 디스크를 관통하여 휠축에 장착되는 톤휠과, 상기 톤휠에 근접 설치되어 상기 톤휠의 회전속도를 감지하는 감지센서와, 상기 감지센서가 노면상의 이물질에 의해 손상되는 것을 방지하는 더스트커버와, 상기 더스트커버에 장착되어 상기 디스크의 회전에 따라 발생되는 복사열로부터 상기 감지센서를 보호하는 보호부재를 포함하는 것을 특징으로 한다.Wheel speed detection apparatus according to an embodiment of the present invention is a tone wheel mounted on the wheel shaft through the disk, a sensor installed close to the tone wheel to detect the rotational speed of the tone wheel, the detection sensor by the foreign matter on the road surface And a protective member mounted on the dust cover to protect the sensing sensor from radiation heat generated by the rotation of the disk.

또한, 감지센서의 전면부는 상기 보호부재로부터 상기 디스크의 복사열이 전달되는 것을 방지하도록 상기 보호부재와 일정간격 이격되게 장착되는 것을 특징으로 한다.In addition, the front portion of the sensor is characterized in that it is mounted to be spaced apart from the protective member to prevent the radiant heat of the disk from being transmitted from the protective member.

또한, 보호부재는 상기 톤휠의 반대편에서 상기 감지센서의 전면부를 반원형태로 둘러싸는 것을 특징으로 한다.In addition, the protective member is characterized in that the front portion of the sensor in the semicircular shape on the opposite side of the tone wheel.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 휠 속도 감지장치는 더스트커버에 디스크의 회전 시 발생되는 복사열로부터 감지센서를 보호하는 보호부재가 장착됨으로써 감지센서가 손상되는 것을 방지할 수 있게 된다. As described above in detail, the wheel speed sensing apparatus according to the present invention is prevented from being damaged by mounting a protection member to protect the sensing sensor from the radiant heat generated when the disk is rotated in the dust cover.

이하에서는 본 발명에 따른 바람직한 실시 예를 첨부 도면을 참조하여 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 차량용 휠 속도 감지장치를 나타낸 사시도이며, 도 2는 도 1에 도시된 차량용 휠 속도 감지장치에서 감지센서와 보호부재를 도시한 사시도이다.1 is a perspective view showing a wheel speed sensor for a vehicle according to the present invention, Figure 2 is a perspective view showing a sensor and a protective member in the wheel speed sensor for a vehicle shown in FIG.

도 1 및 도 2에 도시한 바와 같이, 휠(미도시)과 함께 회전하는 디스크 브레이크에는 휠의 회전속도를 감지하는 휠 속도 감지장치(20)가 마련된다.1 and 2, the disk brake that rotates with the wheel (not shown) is provided with a wheel speed sensor 20 for detecting the rotational speed of the wheel.

디스크(10)는 브레이크 패드와 마찰하여 제동력을 발생시키는 내판(12)과 외판(11)이 내판(12)과 외판(11) 사이에 방사상으로 형성된 리브(13)에 의해 일체를 이루며 마련된다. 각 리브(13) 사이에는 방열공(14)이 마련되어 제동력을 형성시키기 위한 브레이크 패드와 디스크(10)의 마찰 시 발생되는 복사열이 공기와 함께 외부로 방출되도록 한다. 또, 외판(11)에는 휠이 결합되는 결합부(미도시)가 마련되고, 결합부 내측에는 휠을 볼트로 체결시키기 위한 허브(미도시)가 설치된다.The disk 10 is provided integrally by a rib 13 formed radially between the inner plate 12 and the outer plate 11, the inner plate 12 and the outer plate 11 to generate a braking force by friction with the brake pads. A heat radiating hole 14 is provided between the ribs 13 so that radiant heat generated when friction between the brake pad and the disk 10 for forming the braking force is released to the outside together with the air. In addition, the outer plate 11 is provided with a coupling part (not shown) to which the wheel is coupled, and a hub (not shown) for fastening the wheel with a bolt is installed inside the coupling part.

휠 속도 감지장치(20)는 휠과 함께 회전하는 디스크(10)의 내측에 마련되는 톤휠(21)과, 이 톤휠(21)의 외주에 근접 설치되는 감지센서(22)와, 주행 중 휠 회전에 의해 튀어오르는 노면상의 이물질에 의해 감지센서(22)가 손상되는 것을 방지하는 더스트커버(23)를 포함하여 구성된다.The wheel speed detecting device 20 includes a tone wheel 21 provided inside the disk 10 that rotates together with the wheel, a detection sensor 22 installed in the outer circumference of the tone wheel 21, and wheel rotation while driving. It is configured to include a dust cover 23 to prevent the sensor 22 from being damaged by the foreign matter on the road surface.

톤휠(21)은 원판 형상의 외주면에 산과 골로 이루어진 톱니형상이 반복되게 형성된 외관을 가진다. 이러한 톤휠(21)은 강자성체인 강철로 이루어지며, 그 중심부가 휠축(16)에 끼워져 디스크(10)의 회전 시 회전된다.The tone wheel 21 has an appearance in which a tooth shape made of a hill and a valley is repeatedly formed on an outer circumferential surface of a disc shape. The tone wheel 21 is made of steel, which is a ferromagnetic material, the center of which is fitted to the wheel shaft 16 is rotated when the disk 10 is rotated.

감지센서(22)의 전면부(22a)는 더스트커버(23)에 형성된 구멍(미도시)에 삽입되어 보호되도록 함으로써 주행 중 휠 회전에 의해 튀어오르는 노면상의 이물질에 의해 손상되는 것이 방지된다. 이러한 감지센서(22)는 고정부재(25)를 통하여 더스트커버(23)에 고정된다.The front part 22a of the detection sensor 22 is inserted into a hole (not shown) formed in the dust cover 23 to be protected from being damaged by the foreign matter on the road surface that springs up by the rotation of the wheel while driving. The sensor 22 is fixed to the dust cover 23 through the fixing member 25.

그리고, 감지센서(22)는 외관을 형성하는 하우징(22b)이 톤휠(21)을 향하도록 마련된다. 하우징(22b)의 내부에는 자기력을 발생시키는 영구자석(미도시)이 설치되고, 영구자석의 전방에는 영구자석에서 발생된 자속이 톤휠(21) 쪽으로 향하게 하는 자극편(미도시)이 구비된다. 하우징(24)의 내부에서 자극편과 영구자석 사이에는 톤휠(21)의 회전에 따라 자속의 변화치를 전압으로 변환하는 코일(미도시)이 권선되어 있다.In addition, the sensing sensor 22 is provided such that the housing 22b forming the exterior faces the tone wheel 21. A permanent magnet (not shown) for generating a magnetic force is installed inside the housing 22b, and a magnetic pole piece (not shown) for directing magnetic flux generated from the permanent magnet toward the tone wheel 21 is provided in front of the permanent magnet. A coil (not shown) is wound between the magnetic pole piece and the permanent magnet in the housing 24 to convert a change in magnetic flux into a voltage as the tone wheel 21 rotates.

한편, 본 발명에서는 디스크(10)의 회전에 따라 발생되는 복사열이 감지센서(22)로 전달되어 감지센서(22)가 손상되는 것을 방지하기 위해 감지센서(22)의 전면부(22a)를 보호하는 보호부재(24)가 장착된다.Meanwhile, in the present invention, radiant heat generated by the rotation of the disk 10 is transmitted to the sensor 22 to protect the front part 22a of the sensor 22 to prevent the sensor 22 from being damaged. The protection member 24 is mounted.

보호부재(24)는 더스트커버(23)에 장착되어 감지센서(22)의 전면부(22a)를 복사열로부터 보호하게 된다. The protection member 24 is mounted on the dust cover 23 to protect the front part 22a of the sensor 22 from radiant heat.

보호부재(24)는 감지센서(22)를 사이에 두고 톤휠(21)의 반대편에서 감지센서(22)의 일부를 반원형태로 감싸는 구조로 마련된다. 즉, 보호부재(24)는 일측이 밀폐됨으로써 복사열로부터 감지센서(22)를 보호함과 동시에 타측이 개방되어 톤휠(21)의 회전속도를 감지할 수 있게 된다. The protection member 24 is provided in a structure that surrounds a part of the sensing sensor 22 in a semicircular shape on the opposite side of the tone wheel 21 with the sensing sensor 22 therebetween. That is, the protection member 24 is closed on one side to protect the detection sensor 22 from radiant heat and at the same time the other side is opened to detect the rotational speed of the tone wheel 21.

또한, 감지센서(22)의 전면부(22a)는 디스크(10)의 회전 시 발생되는 복사열 이 보호부재(24)를 통해 전달되지 않도록 보호부재(24)와 일정 간격 이격되게 배치된다. 즉, 감지센서(22)의 전면부(22a)는 보호부재(24)에 의해 둘러쌓여 열전달이 되지 않도록 하기 위한 공기층이 형성되는 공간이 마련되어 있다.In addition, the front part 22a of the detection sensor 22 is disposed to be spaced apart from the protective member 24 so that radiant heat generated when the disk 10 is rotated is not transmitted through the protective member 24. That is, the front portion 22a of the detection sensor 22 is provided with a space in which an air layer is formed to be surrounded by the protection member 24 to prevent heat transfer.

따라서, 본 발명에서는 톤휠(21)에 근접 설치되는 감지센서(22)를 보호하도록 더스트커버(23)에 보호부재(24)를 장착함으로써, 디스크(10)의 회전에 따라 발생되는 복사열에 의해 휠 속도 감지장치(20)의 감지센서(22)가 손상되는 것을 방지할 수 있게 된다.Therefore, in the present invention, by mounting the protective member 24 in the dust cover 23 to protect the sensor 22 is installed close to the tone wheel 21, the wheel by the radiant heat generated by the rotation of the disk 10 It is possible to prevent the detection sensor 22 of the speed sensor 20 from being damaged.

도 1은 본 발명에 따른 차량용 휠 속도 감지장치를 나타낸 사시도이다.1 is a perspective view showing a vehicle wheel speed sensor according to the present invention.

도 2는 도 1에 도시된 차량용 휠 속도 감지장치에서 감지센서와 보호부재를 도시한 사시도이다.FIG. 2 is a perspective view illustrating a sensor and a protection member in the wheel speed sensor for a vehicle shown in FIG. 1.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 디스크 16 : 휠축10 disc 16 wheel axle

20 : 휠 속도 감지장치 21 : 톤휠20: wheel speed detection device 21: tone wheel

22 : 감지센서 23 : 더스트 커버22: sensor 23: dust cover

24 : 보호부재 25 : 고정부재24: protective member 25: fixed member

Claims (3)

디스크를 관통하여 휠축에 장착되는 톤휠과, A tone wheel mounted to the wheel shaft through the disc, 상기 톤휠에 근접 설치되어 상기 톤휠의 회전속도를 감지하는 감지센서와,A detection sensor installed in proximity to the tone wheel and detecting a rotation speed of the tone wheel; 상기 감지센서가 노면상의 이물질에 의해 손상되는 것을 방지하는 더스트커버와,A dust cover which prevents the detection sensor from being damaged by a foreign substance on a road surface; 상기 더스트커버에 장착되어 상기 디스크의 회전에 따라 발생되는 복사열로부터 상기 감지센서를 보호하는 보호부재를 포함하는 차량용 휠 속도 감지장치에 있어서,In the wheel speed sensor for a vehicle comprising a protection member mounted to the dust cover to protect the detection sensor from radiation heat generated by the rotation of the disk, 상기 감지센서의 전면부는 상기 보호부재로부터 상기 디스크의 복사열이 전달되는 것을 방지하도록 상기 보호부재와 일정간격 이격되게 장착되는 것을 특징으로 하는 차량용 휠 속도 감지장치.And a front portion of the detection sensor is mounted at a predetermined interval apart from the protection member to prevent the radiant heat of the disk from being transferred from the protection member. 제1항에 있어서,The method of claim 1, 상기 보호부재는 상기 톤휠의 반대편에서 상기 감지센서의 전면부를 반원형태로 둘러싸는 것을 특징으로 하는 차량용 휠 속도 감지장치.The protective member is a vehicle wheel speed sensing device, characterized in that the front side of the sensing sensor surrounds the semi-circular shape on the opposite side of the tone wheel. 삭제delete
KR1020090012848A 2009-02-17 2009-02-17 Wheel speed sensing device for vehicle KR101282002B1 (en)

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Citations (2)

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Publication number Priority date Publication date Assignee Title
KR0124814Y1 (en) * 1995-05-11 1998-12-01 정몽원 Wheel speed detection apparatus for a vehicle
KR20040057296A (en) * 2002-12-26 2004-07-02 현대자동차주식회사 a wheel speed sensor protecting structure of vehicles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0124814Y1 (en) * 1995-05-11 1998-12-01 정몽원 Wheel speed detection apparatus for a vehicle
KR20040057296A (en) * 2002-12-26 2004-07-02 현대자동차주식회사 a wheel speed sensor protecting structure of vehicles

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