KR20020056554A - A speed sensor for vehicle - Google Patents

A speed sensor for vehicle Download PDF

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Publication number
KR20020056554A
KR20020056554A KR1020000085936A KR20000085936A KR20020056554A KR 20020056554 A KR20020056554 A KR 20020056554A KR 1020000085936 A KR1020000085936 A KR 1020000085936A KR 20000085936 A KR20000085936 A KR 20000085936A KR 20020056554 A KR20020056554 A KR 20020056554A
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KR
South Korea
Prior art keywords
ring
magnet unit
spindle shaft
speed sensor
type magnet
Prior art date
Application number
KR1020000085936A
Other languages
Korean (ko)
Inventor
김용주
Original Assignee
이계안
현대자동차주식회사
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Application filed by 이계안, 현대자동차주식회사 filed Critical 이계안
Priority to KR1020000085936A priority Critical patent/KR20020056554A/en
Publication of KR20020056554A publication Critical patent/KR20020056554A/en

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • G01P1/12—Recording devices
    • G01P1/122—Speed recorders

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

Abstract

PURPOSE: A speed sensor is provided to prevent a loss and a damage of a spindle shaft and to easily connect the spindle shaft to a driving gear set by forming one body of a ring-type magnet unit alternately formed with N-poles and S-poles and the spindle shaft, and by detecting a pole change of the magnet unit using a sensor. CONSTITUTION: A speed sensor comprises a housing(13), a body formed with a spindle shaft(11) and a ring-type magnet unit(12) mounted on the housing(13) capable of circulating, N-pole magnets(14) and S-pole magnets(15) alternately formed along a circulating direction of the ring-type magnet unit(12), a sensor(17) mounted on a PCB(Printed Circuit Board) installed adjacent to the ring-type magnet unit(12), and the PCB protected by a cover part(18) and electrically connected to an outer connecting pin(19).

Description

자동차용 스피드센서{A speed sensor for vehicle}A speed sensor for vehicle

본 발명은 자동차용 스피드센서에 관한 것으로, 좀더 상세하게는 자동차의 구동기어세트(driven gear set)에 연동되어 회전하는 마그네트의 극성 변화를 바탕으로 자동차의 주행 속도를 감지하는 자동차용 스피드센서에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed sensor for a vehicle, and more particularly, to a speed sensor for a vehicle that detects a driving speed of a vehicle based on a change in polarity of a rotating magnet linked to a drive gear set of a vehicle. will be.

도 1은 종래 기술에 따른 자동차용 스피드센서의 외관도이고, 도 2는 종래 기술에 따른 스피드센서의 동작을 설명하기 위한 도면으로서, 상기 도 1 및 도 2에서 참조부호 1은 스피드센서, 2는 스핀들샤프트, 3은 베인, 4는 마그네트, 5는 홀센서이다.1 is an external view of a speed sensor for a vehicle according to the prior art, Figure 2 is a view for explaining the operation of the speed sensor according to the prior art, in Figures 1 and 2, reference numeral 1 is a speed sensor, 2 is Spindle shaft, 3 vanes, 4 magnets and 5 hall sensors.

상기 도 1 및 도 2에 도시된 바와 같이, 스피드센서(1)에는 구동기어세트(driven gear set)와 맞물려 회전되는 스핀들샤프트(2)가 분리가능하도록 삽입되어, 스피드센서(1)의 내부에 설치된 베인(3)과 맞물려 있다. 그리고, 상기 베인(3)의 양측에는 마그네트(4)와 홀센서(5)가 서로 대응되게 각각 설치되어 있다.As shown in FIGS. 1 and 2, the spindle shaft 2, which is rotated in engagement with a driven gear set, is inserted into the speed sensor 1 to be detachably inserted into the speed sensor 1. Meshes with the installed vanes (3). On both sides of the vanes 3, magnets 4 and hall sensors 5 are provided to correspond to each other.

따라서, 상기 스핀들샤프트(2)가 구동기어세트와 맞물려 회전하게 되면 상기 베인(3)이 상기 마그네트(4)와 홀센서(5)의 사이에서 회전하게 되고, 상기와 같이 베인(3)이 회전함에 따라 홀센서(5)에 의해 감지되는 자력선량이 가감됨으로써, 자동차의 주행 속도를 측정할 수 있는 것이다.Therefore, when the spindle shaft 2 is engaged with the drive gear set to rotate, the vane 3 rotates between the magnet 4 and the hall sensor 5, and the vane 3 rotates as described above. As the magnetic force dose detected by the Hall sensor 5 is added or subtracted, the driving speed of the vehicle can be measured.

그러나, 상기한 바와 같은 종래 기술에 따른 마그네틱 속도센서는, 스핀들샤프트가 스피드센서에서 분리됨에 따라 분실될 우려가 있고, 상기 스핀들샤프트가 스피드센서내에 정확하게 삽입되지 않으면 상기 스핀들샤프트가 구동기어세트와 맞물려 회전시 절손되어 자동차의 속도를 측정할 수 없게 되는 문제점이 있었다.However, the magnetic speed sensor according to the prior art as described above may be lost as the spindle shaft is separated from the speed sensor, and the spindle shaft is engaged with the drive gear set if the spindle shaft is not correctly inserted into the speed sensor. There was a problem that can not measure the speed of the car is broken during rotation.

또한, 스핀들샤프트의 길이가 스피드센서에 고정되어 길이방향으로 유동되지 않기 때문에 구동기어세트에 정확하게 맞추기가 어렵고, 스피드센서의 사이즈가 커서 레이아웃(layout) 측면에서도 불리한 문제점이 있었다.In addition, since the length of the spindle shaft is fixed to the speed sensor and does not flow in the longitudinal direction, it is difficult to accurately fit the drive gear set, and the size of the speed sensor has a disadvantage in terms of layout.

이에, 본 발명은 상기한 바와 같은 종래의 제 문제점을 해소하기 위해 안출된 것으로, N극과 S극이 교호로 형성되어 있는 링타입의 마그네트 유니트를 스핀들샤프트와 일체로 형성하고 상기 링타입의 마그네트 유니트가 회전시 마그네트의 극성의 변화를 홀센서로 감지함으로써, 스핀들샤프트의 분실 우려가 없을 뿐만 아니라 스핀들샤프트가 절손될 위험이 없고, 스핀들샤프트를 구동기어세트에 정확하게 맞추기가 용이할 뿐만 아니라 스피드센서의 사이즈가 작어져 레이아웃 측면에서도 유리한 자동차용 스피드센서를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and the ring-type magnet unit in which the N-pole and the S-pole are alternately formed integrally with the spindle shaft, and the ring-type magnet When the unit rotates, the change of polarity of the magnet is detected by the Hall sensor, so that there is no fear of losing the spindle shaft, there is no risk of breaking the spindle shaft, and it is easy to accurately match the spindle shaft to the drive gear set. The purpose of the present invention is to provide a speed sensor for automobiles, which is advantageous in terms of layout due to its small size.

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 자동차용 스피드센서는, 링타입의 마그네트 유니트가 스핀들샤프트와 일체로 형성되어 있고, 상기 링타입의 마그네트 유니트의 외주면에는 회전방향을 따라 N극 마그네트와 S극 마그네트가 교호로 반복되어 형성되는 한편, 상기 링타입의 마그네트 유니트의 외주면에 근접하여 홀센서가 설치되어 있는 것을 특징으로 한다.In the automotive speed sensor according to the present invention for achieving the above object, a ring-type magnet unit is formed integrally with the spindle shaft, the outer pole surface of the ring-type magnet unit along the direction of rotation N-pole magnet And S-pole magnets are alternately and repeatedly formed, and the hall sensor is provided in close proximity to the outer circumferential surface of the ring-type magnet unit.

또한, 상기 링타입의 마그네트 유니트의 중앙 공간부에는 상기 스핀들샤프트를 바깥쪽으로 밀어내는 스프링이 더 구비되어 있는 것을 특징으로 한다.In addition, the central space of the ring-type magnet unit is characterized in that the spring is further provided to push the spindle shaft outward.

도 1은 종래 기술에 따른 자동차용 스피드센서의 외관도,1 is an external view of a speed sensor for a vehicle according to the prior art,

도 2는 종래 기술에 따른 스피드센서의 동작을 설명하기 위한 도면,2 is a view for explaining the operation of the speed sensor according to the prior art,

도 3은 본 발명에 따른 자동차용 스피드센서의 단면도,3 is a cross-sectional view of a speed sensor for an automobile according to the present invention;

도 4는 본 발명에 따른 스피드센서의 동작을 설명하기 위한 도면이다.4 is a view for explaining the operation of the speed sensor according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

11 : 스핀틀샤프트 12 : 링타입의 마그네트 유니트11: Spintle shaft 12: Ring type magnet unit

13 : 하우징 14 : N극 마그네트13 housing 14 N pole magnet

15 : S극 마그네트 16 : 인쇄회로기판15: S-pole magnet 16: printed circuit board

17 : 홀센서 18 : 커버부재17 Hall sensor 18 Cover member

19 : 외부연결단자 20 : 볼19: External connection terminal 20: Ball

21 : 스프링21: spring

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 3은 본 발명에 따른 자동차용 스피드센서의 외관도이고, 도 4는 본 발명에 따른 스피드센서의 동작을 설명하기 위한 도면으로서, 상기 도 3 및 도 4에서참조부호 11은 스핀틀샤프트, 12는 링타입의 마그네트 유니트, 13은 하우징, 14는 N극 마그네트, 15는 S극 마그네트, 16은 인쇄회로기판, 17은 홀센서, 18은 커버부재, 19는 외부연결단자, 20은 볼, 21은 스프링이다.3 is an external view of a speed sensor for an automobile according to the present invention, and FIG. 4 is a view for explaining the operation of the speed sensor according to the present invention. In FIGS. 3 and 4, reference numeral 11 denotes a spin shaft, 12. Is a ring type magnet unit, 13 is housing, 14 is N pole magnet, 15 is S pole magnet, 16 is printed circuit board, 17 is Hall sensor, 18 is cover member, 19 is external connection terminal, 20 is ball, 21 Is a spring.

상기 도 3 및 도 4에 도시된 바와 같이, 플래스틱 사출 성형에 의해 일체로 형성된 스핀틀샤프트(11)와 링타입의 마그네트 유니트(12)가 회전가능하도록 하우징(13)내에 장착되고, 상기 링타입의 마그네트 유니트(12)의 외주면에는 상기 링타입의 마그네트 유니트(12)의 회전방향을 따라 N극 마그네트(14)와 S극 마그네트(15)가 교호로 반복되어 형성되어 있다.3 and 4, the spindle shaft 11 and the ring-type magnet unit 12 formed integrally by plastic injection molding are mounted in the housing 13 so as to be rotatable, and the ring-type On the outer circumferential surface of the magnet unit 12, the N-pole magnet 14 and the S-pole magnet 15 are alternately formed along the rotational direction of the ring-type magnet unit 12.

또한, 인쇄회로기판(16)상에 장착된 홀센서(17)가 상기 링타입의 마그네트 유니트(12)의 외주면에 근접하여 설치되며, 상기 인쇄회로기판(16)은 커버부재(18)에 의해 외부와 차단되어 보호되고 있다. 또, 상기 인쇄회로기판(16)은 외부 연결단자(19)와 전기적으로 연결되어 있다.In addition, a Hall sensor 17 mounted on the printed circuit board 16 is installed in close proximity to the outer circumferential surface of the ring-type magnet unit 12, the printed circuit board 16 by the cover member 18 It is blocked and protected from the outside. In addition, the printed circuit board 16 is electrically connected to an external connection terminal 19.

그리고, 상기 링타입의 마그네트 유니트(12)의 중앙 공간부에는 볼(20)과 스프링(21)이 장착되어 있어, 상기 링타입의 마그네트 유니트(12)와 일체로 형성된 스핀들샤프트(11)를 바깥쪽으로 밀어낸다.In addition, a ball 20 and a spring 21 are mounted in the central space of the ring-type magnet unit 12, and the spindle shaft 11 integrally formed with the ring-type magnet unit 12 is outside. To the side.

상기와 같이 구성된 본 발명에 따른 자동차용 스피드센서의 작용 및 효과를 상세히 설명하면 다음과 같다.Referring to the operation and effects of the speed sensor for a vehicle according to the present invention configured as described above are as follows.

먼저, 본 발명에 따른 자동차용 스피드센서를 사용하여 자동차의 주행 속도를 감지하기 위해서는, 스핀들샤프트(11)를 구동기어세트에 맞물려야 한다. 이때, 상기 스핀들샤프트(11)는 스프링(21)의 탄력에 의해 바깥쪽으로 돌출됨에 따라 스핀들샤프트(11)를 구동기어세트에 정확하게 맞추기가 용이한 것이다.First, in order to detect the traveling speed of a vehicle using the speed sensor for automobiles according to the present invention, the spindle shaft 11 should be engaged with the drive gear set. At this time, as the spindle shaft 11 protrudes outward by the elasticity of the spring 21, it is easy to accurately match the spindle shaft 11 to the drive gear set.

상기와 같이 스핀들샤프트(11)를 구동기어세트에 맞물리게 되면 상기 구동기어세트에 의해 스핀들샤프트(11) 및 이와 일체로 형성된 링타입의 마그네트 유니트(12)가 회전하게 된다.When the spindle shaft 11 is engaged with the drive gear set as described above, the spindle shaft 11 and the ring-type magnet unit 12 integrally formed therewith are rotated by the drive gear set.

이때, 상기 링타입의 마그네트 유니트(12)의 외주면에는 N극 마그네트(14)와 S극 마그네트(15)가 교호로 반복되어 형성됨에 따라, 홀센서(17)에 의해 감지되는 마그네트의 극성이 변환되게 되어, 자동차의 주행 속도를 측정할 수 있는 것이다.At this time, as the N pole magnet 14 and the S pole magnet 15 are alternately formed on the outer circumferential surface of the ring-type magnet unit 12, the polarity of the magnet detected by the hall sensor 17 is converted. The vehicle's driving speed can be measured.

이상에서 설명한 바와 같이 본 발명에 따르면, N극과 S극이 교호로 형성되어 있는 링타입의 마그네트 유니트를 스핀들샤프트와 일체로 형성하고 상기 링타입의 마그네트 유니트가 회전시 마그네트의 극성의 변화를 홀센서로 감지함으로써, 스핀들샤프트의 분실 우려가 없을 뿐만 아니라 스핀들샤프트가 절손될 위험이 없고, 스핀들샤프트를 구동기어세트에 정확하게 맞추기가 용이할 뿐만 아니라 스피드센서의 사이즈가 작어져 레이아웃 측면에서도 유리한 효과가 있다.As described above, according to the present invention, a ring-type magnet unit in which the N-pole and the S-pole are alternately formed is integrally formed with the spindle shaft, and the magnet of the ring-type magnet unit changes the polarity of the magnet when rotating. By sensing the sensor, not only does not worry about losing the spindle shaft, but also there is no risk of breaking the spindle shaft, it is easy to fit the spindle shaft to the drive gear set accurately, and the size of the speed sensor is small, which is advantageous in terms of layout. have.

Claims (2)

링타입의 마그네트 유니트가 스핀들샤프트와 일체로 형성되어 있고, 상기 링타입의 마그네트 유니트의 외주면에는 회전방향을 따라 N극 마그네트와 S극 마그네트가 교호로 반복되어 형성되는 한편, 상기 링타입의 마그네트 유니트의 외주면에 근접하여 홀센서가 설치되어 있는 것을 특징으로 하는 자동차용 스피드센서.The ring-type magnet unit is formed integrally with the spindle shaft, and on the outer circumferential surface of the ring-type magnet unit, the N-pole magnet and the S-pole magnet are alternately formed along the rotational direction, while the ring-type magnet unit Speed sensor for cars, characterized in that the hall sensor is installed close to the outer peripheral surface of the. 제 1 항에 있어서,The method of claim 1, 상기 링타입의 마그네트 유니트의 중앙 공간부에는 상기 스핀들샤프트를 바깥쪽으로 밀어내는 스프링이 더 구비되어 있는 것을 특징으로 하는 자동차용 스피드센서.Speed sensor for a vehicle, characterized in that the central space of the ring-type magnet unit is further provided with a spring for pushing the spindle shaft outward.
KR1020000085936A 2000-12-29 2000-12-29 A speed sensor for vehicle KR20020056554A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040003527A (en) * 2002-07-03 2004-01-13 기아자동차주식회사 Round Formed Magnetic Car Speed Detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040003527A (en) * 2002-07-03 2004-01-13 기아자동차주식회사 Round Formed Magnetic Car Speed Detector

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