KR20020055056A - Wiper driving circuit in a vehicle - Google Patents

Wiper driving circuit in a vehicle Download PDF

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Publication number
KR20020055056A
KR20020055056A KR1020000084409A KR20000084409A KR20020055056A KR 20020055056 A KR20020055056 A KR 20020055056A KR 1020000084409 A KR1020000084409 A KR 1020000084409A KR 20000084409 A KR20000084409 A KR 20000084409A KR 20020055056 A KR20020055056 A KR 20020055056A
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KR
South Korea
Prior art keywords
wiper
relay
low speed
intermittent
diode
Prior art date
Application number
KR1020000084409A
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Korean (ko)
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KR100383997B1 (en
Inventor
김동호
Original Assignee
이계안
현대자동차주식회사
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Priority to KR10-2000-0084409A priority Critical patent/KR100383997B1/en
Publication of KR20020055056A publication Critical patent/KR20020055056A/en
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Publication of KR100383997B1 publication Critical patent/KR100383997B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0803—Intermittent control circuits
    • B60S1/0807—Intermittent control circuits using electronic control means, e.g. tubes, semiconductors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0814—Wipers or the like, e.g. scrapers characterised by the drive electrically driven using several drive motors; motor synchronisation circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H01H2003/266—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor having control circuits for motor operating switches, e.g. controlling the opening or closing speed of the contacts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S318/00—Electricity: motive power systems
    • Y10S318/02—Windshield wiper controls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE: A wiper driving circuit of a vehicle is provided to prevent the damage on a contact point of a relay by removing the chattering of the relay via a surge absorbing circuit and to avoid the disconnection of a fuse for a wiper. CONSTITUTION: A wiper driving circuit of a vehicle includes an intermittent and low-speed relay(10), a high-speed relay(20), a wiper drive motor(30), an automatic stop switch(40), an ETACS(Electronic Time Alarm Control System)(50), a first surge absorbing circuit(60), and a second surge absorbing circuit(70). The first surge absorbing circuit includes a forward diode(D1) and a capacitor(C1) connected parallel to the diode. The second surge absorbing circuit includes a reverse diode(D2) and a capacitor(C2) connected parallel to the diode. The chattering of the relay is prevented by the first and second surge absorbing circuits.

Description

자동차의 와이퍼 구동회로{Wiper driving circuit in a vehicle}Wiper driving circuit in a vehicle

본 발명은 자동차의 와이퍼 구동회로에 관한 것으로, 좀더 상세하게는 차량 주행중에 윈드 실드에서 눈, 비 또는 흙탕물 등과 같은 이물질을 닦아냄으로써 운전자의 시야를 확보하는 자동차의 와이퍼 구동회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper driving circuit of a motor vehicle, and more particularly, to a wiper driving circuit of a motor vehicle that secures a driver's vision by wiping off foreign substances such as snow, rain, or muddy water from the windshield while the vehicle is being driven.

일반적으로, 차량 주행중에 전면 윈드 실드에 이물질이 부착되어 운전자의 시야를 방해하는 경우가 발생될 뿐만 아니라 눈이나 비가 올 경우에도 운전자의 시야를 방해하게 되므로, 운전자의 시야를 확보하기 위한 와이퍼가 구비되어 있는데,이와 같은 와이퍼는 운전자의 스위치 조작에 따라 와이퍼가 좌우로 회전되면서 전면 윈드 실드에 부착된 이물질등을 제거하여 운전자의 시야를 확보할 수 있도록 하고 있다.In general, foreign matter is attached to the front windshield while driving the vehicle, which not only interferes with the driver's vision, but also interferes with the driver's vision even when it is snowing or raining, so that a wiper is provided to secure the driver's vision. The wiper is rotated left and right according to the operator's switch operation to remove foreign substances attached to the front windshield to secure the driver's view.

이때, 상기 와이퍼의 회전속도는 운전자가 와이퍼스위치를 간헐, 저속, 또는 고속모드로 위치시킴에 따라 조절되는데, 간헐모드에서는 와이퍼가 느린 속도로 간헐적으로 좌우 회전되고, 저속모드에서는 와이퍼가 느린 속도로 계속해서 좌우 회전되며, 고속모드에서는 와이퍼가 빠른 속도로 계속해서 좌우 회전된다.At this time, the rotation speed of the wiper is adjusted as the driver positions the wiper switch in the intermittent, low speed, or high speed mode. In the intermittent mode, the wiper rotates intermittently left and right at a low speed, and in the low speed mode, the wiper is rotated at a low speed. It rotates left and right continuously, and in high speed mode the wiper continues to rotate left and right at high speed.

상기한 바와 같은 종래 기술에 따른 자동차의 와이퍼 구동회로는 도 1에 도시된 바와 같이, 간헐 및 저속용 릴레이(10)와, 고속용 릴레이(20), 와이퍼 구동모터(30), 자동정지스위치(40) 및, 에탁스(ETACS; Electronic Time Alarm Control System)(50)를 포함하여 구성되어 있다.As shown in FIG. 1, the wiper driving circuit of the vehicle according to the related art is an intermittent and low speed relay 10, a high speed relay 20, a wiper driving motor 30, and an automatic stop switch ( 40) and an ETACS (Electronic Time Alarm Control System) 50. FIG.

상기 간헐 및 저속용 릴레이(10)는 운전자가 저속스위치(1)를 '온'시키면 작동하여 와이퍼용 퓨즈(F)를 통해 공급되는 배터리 전원(B+)을 제2릴레이(20)를 통해 와이퍼 구동모터(30)의 저속단자(LOW)로 공급하여 와이퍼를 저속으로 회전시키는 한편, 운전자가 간헐모드를 선택함에 따라 상기 에탁스(50)에서 일정 시간 간격으로 출력되는 펄스신호에 의해 동작하여 와이퍼용 퓨즈(F)를 통해 공급되는 배터리 전원(B+)을 일정 시간 간격으로 제2릴레이(20)를 통해 와이퍼 구동모터(30)의 저속단자(LOW)로 공급하여 와이퍼를 간헐적으로 회전시킨다.The intermittent and low speed relay 10 operates when the driver 'on' the low speed switch 1 to drive the wiper through the second relay 20 to supply the battery power B + supplied through the wiper fuse F. The wiper is rotated at a low speed by supplying it to the low speed terminal LOW of the motor 30, and operated by a pulse signal output from the ETAX 50 at predetermined time intervals as the driver selects the intermittent mode. The wiper is intermittently rotated by supplying the battery power B + supplied through the fuse F to the low speed terminal LOW of the wiper driving motor 30 through the second relay 20 at regular intervals.

상기 고속용 릴레이(20)는 운전자가 고속스위치(2)를 '온'시키면 작동하여 와이퍼용 퓨즈(F)와 간헐 및 저속용 릴레이(10)를 통해 공급되는 배터리 전원(B+)을 와이퍼 구동모터(30)의 고속단자(HIGH)로 공급하여 와이퍼를 고속으로 회전시킨다.The high speed relay 20 operates when the driver 'on' the high speed switch 2 to operate the wiper drive motor for the battery power B + supplied through the wiper fuse F and the intermittent and low speed relay 10. The wiper is rotated at high speed by being supplied to the high speed terminal HIGH of 30.

또한, 상기 자동정지스위치(40)는 와이퍼가 초기 위치에서 정지되도록 하며, 상기 에탁스(50)는 운전자에 의해 간헐모드가 선택되면 일정 시간 간격으로 펄스신호를 출력하여 상기 간헐 및 저속용 릴레이(10)가 와이퍼용 퓨즈(F)를 통해 공급되는 배터리 전원(B+)을 일정 시간 간격으로 제2릴레이(20)를 통해 와이퍼 구동모터(30)의 저속단자(LOW)로 공급하여 와이퍼를 간헐적으로 회전시키도록 한다.In addition, the automatic stop switch 40 causes the wiper to stop at the initial position, and when the intermittent mode is selected by the driver, the etax 50 outputs a pulse signal at predetermined time intervals to output the intermittent and low speed relay ( 10) supplies the battery power B + supplied through the wiper fuse F to the low speed terminal LOW of the wiper drive motor 30 through the second relay 20 at regular intervals, thereby providing the wiper intermittently. Rotate

그러나, 상기한 바와 같은 종래 기술에 따른 자동차의 와이퍼 구동회로는, 와이퍼를 간헐모드(INT Time Mode)로 구동시키거나 저속스위치를 자주 오프(off)시키면 간헐 및 저속용 릴레이에 채터링(Chattering) 현상이 발생되어 간헐 및 저속용 릴레이의 접점이 손상될 뿐만 아니라 이로 인해 아크(Arc)방전이 발생하여 와이퍼용 퓨즈가 융단되는 문제점이 있었다.However, the wiper driving circuit of a vehicle according to the prior art as described above chatters the intermittent and low speed relay when the wiper is driven in the INT Time Mode or the low speed switch is frequently turned off. The phenomenon occurs not only to damage the contact point of the intermittent and low-speed relay, but due to this arc arcing has caused a problem that the fuse for the wiper is melted.

이에, 본 발명은 상기한 바와 같은 종래의 문제점을 해소하기 위해 안출된 것으로, 서지흡수회로를 채용하여 간헐 및 저속용 릴레이의 채터링(Chattering) 현상을 제거함으로써, 간헐 및 저속용 릴레이의 접점이 손상되는 것을 방지할 수 있을 뿐만 아니라 와이퍼용 퓨즈의 융단도 방지할 수 있는 자동차의 와이퍼 구동회로를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the conventional problems as described above, by employing a surge absorption circuit to eliminate the chattering of intermittent and low speed relay, the contact of the intermittent and low speed relay It is an object of the present invention to provide a wiper driving circuit for a vehicle that can prevent damage and also prevent rugs of the fuse for wiper.

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 자동차의 와이퍼 구동회로는, 간헐모드 또는 저속모드에서 와이퍼 구동모터의 저속단자로 배터리 전원을 공급하는 릴레이와, 와이퍼가 자동적으로 초기 위치에서 정지하게 하는 자동정지스위치를 포함하여 구성된 자동차의 와이퍼 구동회로에 있어서, 상기 릴레이의 배터리전원공급단에 제1서지흡수회로가 구비됨과 더불어 상기 자동정지스위치의 접지단에 제2서지흡수회로가 구비되어 있는 것을 특징으로 한다.The wiper drive circuit of the vehicle according to the present invention for achieving the above object, the relay for supplying battery power to the low speed terminal of the wiper drive motor in the intermittent mode or low speed mode, and the wiper automatically stops at the initial position A wiper driving circuit of a vehicle including an automatic stop switch, wherein the first surge absorption circuit is provided at the battery power supply terminal of the relay and the second surge absorption circuit is provided at the ground terminal of the automatic stop switch. It is characterized by.

도 1은 종래 기술에 따른 자동차의 와이퍼 구동회로의 회로도,1 is a circuit diagram of a wiper driving circuit of a vehicle according to the prior art,

도 2는 본 발명에 따른 자동차의 와이퍼 구동회로의 회로도이다.2 is a circuit diagram of a wiper driving circuit of a vehicle according to the present invention.

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

10 : 간헐 및 저속용 릴레이 20 : 고속용 릴레이10: intermittent and low speed relay 20: high speed relay

30 : 와이퍼 구동모터 40 : 자동정지스위치30: wiper drive motor 40: automatic stop switch

50 : 에탁스 60 : 제1서지흡수회로50: Etax 60: first surge absorption circuit

70 : 제2서지흡수회로70: second surge absorption circuit

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 2는 본 발명에 따른 자동차의 와이퍼 구동회로의 회로도로서, 도 1에 도시된 종래 기술에 따른 자동차의 와이퍼 구동회로와 동일한 구성에 대해서는 동일한 참조부호를 사용하였다.2 is a circuit diagram of a wiper driving circuit of a vehicle according to the present invention, the same reference numerals are used for the same configuration as the wiper driving circuit of the vehicle according to the prior art shown in FIG.

상기 도 2에 도시된 바와 같이, 본 발명에 따른 자동차의 와이퍼 구동회로는, 간헐 및 저속용 릴레이(10)와, 고속용 릴레이(20), 와이퍼 구동모터(30), 자동정지스위치(40), 에탁스(ETACS; Electronic Time Alarm Control System)(50), 제1서지흡수회로(60) 및, 제2서지흡수회로(70)를 포함하여 구성되어 있다.As shown in FIG. 2, the wiper driving circuit of the vehicle according to the present invention includes an intermittent and low speed relay 10, a high speed relay 20, a wiper drive motor 30, and an automatic stop switch 40. And an ETAS (Electronic Time Alarm Control System) 50, a first surge absorption circuit 60, and a second surge absorption circuit 70.

상기 간헐 및 저속용 릴레이(10)는 운전자가 저속스위치(1)를 '온'시키면 작동하여 와이퍼용 퓨즈(F)와 제1서지흡수회로(60)를 통해 공급되는 배터리 전원(B+)을 제2릴레이(20)를 통해 와이퍼 구동모터(30)의 저속단자(LOW)로 공급하여 와이퍼를 저속으로 회전시키는 한편, 운전자가 간헐모드를 선택함에 따라 상기 에탁스(50)에서 일정 시간 간격으로 출력되는 펄스신호에 의해 동작하여 와이퍼용 퓨즈(F)와 제1서지흡수회로(60)를 통해 공급되는 배터리 전원(B+)을 일정 시간 간격으로 제2릴레이(20)를 통해 와이퍼 구동모터(30)의 저속단자(LOW)로 공급하여 와이퍼를 간헐적으로 회전시킨다.The intermittent and low speed relay 10 operates when the driver 'turns on' the low speed switch 1 to remove the battery power B + supplied through the wiper fuse F and the first surge absorption circuit 60. While supplying to the low speed terminal LOW of the wiper drive motor 30 through the two relays 20, the wiper is rotated at a low speed, while the driver selects the intermittent mode, and is output at a predetermined time interval from the tax 50. The wiper drive motor 30 is operated by the second relay 20 at predetermined time intervals by operating the pulse signal to operate the battery power B + supplied through the wiper fuse F and the first surge absorption circuit 60. To the low speed terminal (LOW) of the wiper to rotate intermittently.

상기 고속용 릴레이(20)는 운전자가 고속스위치(2)를 '온'시키면 작동하여 와이퍼용 퓨즈(F)와 제1서지흡수회로(60), 간헐 및 저속용 릴레이(10)를 통해 공급되는 배터리 전원(B+)을 와이퍼 구동모터(30)의 고속단자(HIGH)로 공급하여 와이퍼를 고속으로 회전시킨다.The high speed relay 20 operates when the driver 'turns on' the high speed switch 2 and is supplied through the wiper fuse F, the first surge absorption circuit 60, and the intermittent and low speed relay 10. The wiper is rotated at high speed by supplying the battery power B + to the high speed terminal HIGH of the wiper drive motor 30.

또한, 상기 자동정지스위치(40)는 와이퍼가 초기 위치에서 정지되도록 하며, 상기 에탁스(50)는 운전자에 의해 간헐모드가 선택되면 일정 시간 간격으로 펄스신호를 출력하여 상기 간헐 및 저속용 릴레이(10)가 와이퍼용 퓨즈(F)와 제1서지흡수회로(60)를 통해 공급되는 배터리 전원(B+)을 일정 시간 간격으로 제2릴레이(20)를 통해 와이퍼 구동모터(30)의 저속단자(LOW)로 공급하여 와이퍼를 간헐적으로 회전시키도록 한다.In addition, the automatic stop switch 40 causes the wiper to stop at the initial position, and when the intermittent mode is selected by the driver, the etax 50 outputs a pulse signal at predetermined time intervals to output the intermittent and low speed relay ( 10 is a low speed terminal of the wiper drive motor 30 through the second relay 20 at regular intervals of the battery power B + supplied through the wiper fuse F and the first surge absorption circuit 60. LOW) to allow the wiper to rotate intermittently.

그리고, 상기 제1서지흡수회로(60)는 상기 간헐 및 저속용 릴레이(10)의 스위치(12)의 배터리전원공급단(c)에 구비된 정방향의 다이오드(D1)와, 이 다이오드(D1)의 양단에 병렬로 연결된 캐패시터(C1)를 포함되어, 상기 간헐 및 저속용 릴레이(10)의 채터링 현상을 방지하도록 되어 있다.The first surge absorption circuit 60 includes a forward diode D1 provided at the battery power supply terminal c of the switch 12 of the intermittent and low speed relay 10, and the diode D1. Capacitors C1 connected in parallel at both ends of the circuit are included to prevent chattering of the intermittent and low speed relay 10.

또한, 상기 제2서지흡수회로(70)는 상기 자동정지스위치(40)의 접지단(e)에 구비되어 있는 역방향의 다이오드(D2)와, 이 다이오드(D2)의 양단에 병렬로 연결된 캐패시터(C2)를 포함하여 구성되어, 상기 간헐 및 저속용 릴레이(10)의 채터링 현상을 방지하도록 되어 있다.In addition, the second surge absorption circuit 70 includes a diode D2 in a reverse direction provided at the ground terminal e of the automatic stop switch 40 and a capacitor connected in parallel to both ends of the diode D2. C2) to prevent chattering of the intermittent and low speed relay 10.

상기와 같이 구성된 본 발명에 따른 자동차의 와이퍼 구동회로의 작용 및 효과를 상세히 설명하면 다음과 같다.Referring to the operation and effects of the wiper driving circuit of the vehicle according to the present invention configured as described above in detail.

운전자가 차량의 시동키를 '온'하여 배터리 전원(B+)이 공급되는 상태에서 간헐모드가 선택되면 에탁스(50)가 간헐시간단자(INT TIME)를 통해 일정 시간 간격으로 저전위의 펄스신호를 출력하여 와이퍼를 간헐적으로 회전시킨다.When the driver selects the intermittent mode while the battery is powered on by turning on the vehicle's ignition key, the Etax 50 generates a low-potential pulse signal at regular intervals through the intermittent time terminal (INT TIME). Output the wiper to rotate intermittently.

즉, 에탁스(50)의 간헐시간단자(INT TIME)에서 저전위의 펄스신호가 출력되면 배터리 전원(B+)이 간헐 및 저속용 릴레이(10)의 코일(11)에 공급됨에 따라 상기 코일(11)이 여자되어 스위치(12)의 가동단자(a)가 일측 고정단자(b)에서 타측 고정단자(c)로 절환되어 접속된다.That is, when a low potential pulse signal is output from the intermittent time terminal (INT TIME) of the ETAX 50, the battery power (B +) is supplied to the coil 11 of the intermittent and low speed relay 10. 11) is excited and the movable terminal a of the switch 12 is switched from one fixed terminal b to the other fixed terminal c and connected.

따라서, 배터리 전원(B+)이 와이퍼용 퓨즈(F)와, 제1서지흡수회로(60), 간헐 및 저속릴레이(10), 고속용 릴레이(20)를 통해 와이퍼 구동모터(30)의 저속단자(LOW)로 공급되어 와이퍼가 저속으로 회전하게 된다.Accordingly, the battery power source B + is connected to the low speed terminal of the wiper drive motor 30 through the wiper fuse F, the first surge absorption circuit 60, the intermittent and low speed relay 10, and the high speed relay 20. It is supplied at (LOW) and the wiper rotates at low speed.

상기와 같이 와이퍼가 회전하게 되면, 자동정지스위치(40)의 가동단자(d)가 일측 고정단자(e)에서 타측 고정단자(f)로 절환되어 접속되므로, 상기 에탁스(50)에서 고전위의 펄스신호가 출력되더라도 상기 와이퍼가 초기 위치로 복귀할때까지는 계속해서 와이퍼 구동모터(30)의 저속단자(LOW)에 배터리 전원(B+)이 공급되어 와이퍼가 계속 회전하게 되며, 상기 와이퍼가 초기 위치로 복귀하여 상기 가동단자(d)가 다시 일측 고정단자(e)로 절환되어 접속되면 와이퍼 구동모터(50)로 공급되는 배터리 전원(B+)이 차단되어 와이퍼가 회전하지 않는다.When the wiper is rotated as described above, since the movable terminal (d) of the automatic stop switch 40 is connected by switching from one fixed terminal (e) to the other fixed terminal (f), the high potential at the etax 50 Even if a pulse signal is outputted, the battery power B + is continuously supplied to the low speed terminal LOW of the wiper drive motor 30 until the wiper returns to the initial position, so that the wiper continues to rotate, and the wiper is initialized. When the movable terminal (d) is returned to the position and is connected to the fixed terminal (e) again, the battery power (B +) supplied to the wiper drive motor 50 is cut off, so that the wiper does not rotate.

그리고, 상기와 같이 와이퍼가 초기 위치로 복귀하여 정지된 상태에서 상기에탁스(50)가 소정 시간이 경과한 다음 다시 간헐시간단자(INT TIME)를 통해 저전위의 펄스신호를 출력하여 와이퍼를 회전시킴으로써, 와이퍼를 간헐적으로 회전시키는 것이다.Then, the wiper rotates the wiper by outputting a low-potential pulse signal through the intermittent time terminal (INT TIME) after a predetermined time has elapsed while the wiper returns to the initial position and stops. This makes the wiper rotate intermittently.

한편, 운전자가 저속스위치(1)를 '온'시키면 배터리 전원(B+)이 간헐 및 저속용 릴레이(10)의 코일(11)에 공급됨에 따라 상기 코일(11)이 여자되어 스위치(12)의 가동단자(a)가 일측 고정단자(b)에서 타측 고정단자(c)로 절환되어 접속된다.On the other hand, when the driver 'on' the low speed switch 1, the battery power (B +) is supplied to the coil 11 of the intermittent and low speed relay 10, the coil 11 is excited to the switch 12 The movable terminal a is switched from one fixed terminal b to the other fixed terminal c and connected thereto.

따라서, 배터리 전원(B+)이 와이퍼용 퓨즈(F)와, 제1서지흡수회로(60), 간헐 및 저속릴레이(10), 고속용 릴레이(20)를 통해 와이퍼 구동모터(30)의 저속단자(LOW)로 공급되어 와이퍼가 저속으로 저속스위치(1)가 '오프'될때까지 계속해서 회전하게 된다.Accordingly, the battery power source B + is connected to the low speed terminal of the wiper drive motor 30 through the wiper fuse F, the first surge absorption circuit 60, the intermittent and low speed relay 10, and the high speed relay 20. (LOW) is supplied so that the wiper continues to rotate at low speed until the low speed switch (1) is 'off'.

또한, 운전자가 고속스위치(2)를 '온'시키면 배터리 전원(B+)이 고속용 릴레이(20)의 코일(21)에 공급됨에 따라 상기 코일(21)이 여자되어 스위치(22)의 가동단자(g)가 일측 고정단자(h)에서 타측 고정단자(i)로 절환되어 접속된다.In addition, when the driver 'turns on' the high speed switch 2, the battery 21 is energized as the battery power B + is supplied to the coil 21 of the high speed relay 20 so that the movable terminal of the switch 22 is excited. (g) is switched from one fixed terminal h to the other fixed terminal i and connected.

따라서, 배터리 전원(B+)이 와이퍼용 퓨즈(F)와, 제1서지흡수회로(60), 간헐 및 저속릴레이(10), 고속용 릴레이(20)를 통해 와이퍼 구동모터(30)의 고속단자(HIGH)로 공급되어 고속스위치(2)가 '오프'될때까지 계속해서 고속으로 회전하게 된다.Therefore, the battery power source B + is connected to the high speed terminal of the wiper drive motor 30 through the wiper fuse F, the first surge absorption circuit 60, the intermittent and low speed relay 10, and the high speed relay 20. It is supplied to (HIGH) and continues to rotate at high speed until the high speed switch 2 is 'off'.

이때, 제1서지흡수회로(60)와 제2서지흡수회로(70)가 서지전압을 흡수하여 상기 간헐 및 저속용 릴레이(10)의 채터링 현상을 방지하는 것이다.At this time, the first surge absorption circuit 60 and the second surge absorption circuit 70 absorb the surge voltage to prevent chattering of the intermittent and low speed relay 10.

이상에서 살펴본 바와 같이 본 발명에 따르면, 서지흡수회로를 채용하여 간헐 및 저속용 릴레이의 채터링(Chattering) 현상을 제거함으로써, 간헐 및 저속용 릴레이의 접점이 손상되는 것을 방지할 수 있을 뿐만 아니라 와이퍼용 퓨즈의 융단도 방지할 수 있는 효과가 있다.As described above, according to the present invention, by removing the chattering phenomenon of the intermittent and low speed relay by employing a surge absorption circuit, the wiper can be prevented from being damaged as well as the wiper. The carpet of the fuse is also prevented.

Claims (4)

간헐모드 또는 저속모드에서 와이퍼 구동모터의 저속단자로 배터리 전원을 공급하는 릴레이와, 와이퍼가 자동적으로 초기 위치에서 정지하게 하는 자동정지스위치를 포함하여 구성된 자동차의 와이퍼 구동회로에 있어서,In the wiper drive circuit of a vehicle comprising a relay for supplying battery power to the low speed terminal of the wiper drive motor in the intermittent mode or the low speed mode, and an automatic stop switch for automatically stopping the wiper in the initial position, 상기 릴레이의 배터리전원공급단에 제1서지흡수회로가 더 구비되어 있는 것을 특징으로 하는 자동차의 와이퍼 구동회로.And a first surge absorption circuit is further provided at the battery power supply terminal of the relay. 제 1 항에 있어서,The method of claim 1, 상기 제1서지흡수회로는, 정방향의 다이오드와, 이 다이오드의 양단에 병렬로 연결된 캐패시터를 포함하여 구성된 것을 특징으로 하는 자동차의 와이퍼 구동회로.And the first surge absorption circuit comprises a forward diode and a capacitor connected in parallel to both ends of the diode. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 자동정지스위치의 접지단에 제2서지흡수회로가 더 구비되어 있는 것을 특징으로 하는 자동차의 와이퍼 구동회로.And a second surge absorption circuit is further provided at a ground end of the automatic stop switch. 제 3 항에 있어서,The method of claim 3, wherein 상기 제2서지흡수회로는, 역방향의 다이오드와, 이 다이오드의 양단에 병렬로 연결된 캐패시터를 포함하여 구성된 것을 특징으로 하는 자동차의 와이퍼 구동회로.And the second surge absorption circuit comprises a reverse diode and a capacitor connected in parallel to both ends of the diode.
KR10-2000-0084409A 2000-12-28 2000-12-28 Wiper driving circuit in a vehicle KR100383997B1 (en)

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Publication number Priority date Publication date Assignee Title
CN108202697A (en) * 2016-12-20 2018-06-26 比亚迪股份有限公司 Rain blowing controlled system, wiper and vehicle

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JPS61264916A (en) * 1985-05-20 1986-11-22 Matsushita Electric Ind Co Ltd Surge absorbing circuit
JPH0429595A (en) * 1990-05-24 1992-01-31 Fuji Electric Co Ltd Linear dc motor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108202697A (en) * 2016-12-20 2018-06-26 比亚迪股份有限公司 Rain blowing controlled system, wiper and vehicle
CN108202697B (en) * 2016-12-20 2019-09-13 比亚迪股份有限公司 Rain blowing controlled system, wiper and vehicle

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