KR20030072894A - Froze preventing apparatus of automobile wiper - Google Patents

Froze preventing apparatus of automobile wiper Download PDF

Info

Publication number
KR20030072894A
KR20030072894A KR1020020012175A KR20020012175A KR20030072894A KR 20030072894 A KR20030072894 A KR 20030072894A KR 1020020012175 A KR1020020012175 A KR 1020020012175A KR 20020012175 A KR20020012175 A KR 20020012175A KR 20030072894 A KR20030072894 A KR 20030072894A
Authority
KR
South Korea
Prior art keywords
temperature
motor
wiper
wiper arm
vehicle
Prior art date
Application number
KR1020020012175A
Other languages
Korean (ko)
Inventor
김용욱
Original Assignee
기아자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 기아자동차주식회사 filed Critical 기아자동차주식회사
Priority to KR1020020012175A priority Critical patent/KR20030072894A/en
Publication of KR20030072894A publication Critical patent/KR20030072894A/en

Links

Classifications

    • 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
    • B60S1/0452—Position of the wipers relative to the vehicle
    • B60S1/0455—Device for lifting the wipers off the screen in its parking position or at extremes of wipe
    • 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
    • B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
    • 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
    • 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
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B60S1/0862—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means including additional sensors
    • B60S1/0866—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means including additional sensors including a temperature sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

PURPOSE: A device and method for preventing the freezing of a wiper is provided to prevent the wiper and a wind glass from being frozen by automatically raising a wiper arm when external temperature is below a constant value. CONSTITUTION: A device and method for preventing the freezing of a wiper is composed of a temperature detecting unit(10) detecting the external temperature of a vehicle and outputting data corresponding to the result; a controller(20) outputting a predetermined switching control signal for controlling the ascending and descending of a wiper arm(70) to the data output from the temperature detecting unit and the operation of a starting key; a switching unit(30) operated by the switching control signal output from the controller for a constant time to feed motor driving power; a motor(40) working for a constant time according to the operation of the switching unit; a pinion(50) combined with a shaft of the motor; and a rack(60) engaged with the pinion to move a wiper arm braid up and down.

Description

와이퍼 결빙 방지 장치 및 그 방법{Froze preventing apparatus of automobile wiper}Wiper preventing apparatus and method thereof

본 발명은 차량의 윈드 글래스에 적층되어 있는 이물질을 제거하거나 우천시 빗물을 제거하는데 이용되는 와이퍼가 결빙되는 것을 방지하는 와이퍼의 결빙 방지 장치 및 그 방법에 관한 것으로서, 보다 상세하게는 차량의 외부 온도가 일정치 이하가 되면 자동으로 와이퍼 아암을 상승시켜 와이퍼가 윈드 글래스와 결빙되는 것을 방지하는 장치 및 그 방법에 관한 것이다.The present invention relates to a wiper preventing device and a method of preventing the wiper used to remove foreign matters laminated to the windshield of the vehicle or to remove rain water in raining, and more particularly, the outside temperature of the vehicle is The present invention relates to a device and a method for automatically raising the wiper arm to prevent the wiper from freezing with the wind glass when it is below a certain value.

일반 차량에 장착되어 있는 윈드 실드 와이퍼 아암 장치는 윈드글래스의 표면에 적층되어 있는 먼지나 우천시 윈드글래스 표면으로 흘려 내리는 빗물을 제거하여 운전자의 시야를 좋게한다.The windshield wiper arm device installed in a general vehicle improves the driver's vision by removing dust accumulated on the surface of the windglass and rainwater that flows to the windglass surface in rainy weather.

상기와 같이 윈드글래스 표면에 적층되어 있는 이물질이나 빗물을 제거하는 와이퍼 아암 장치는 많은 눈이나 비가 내린 후 기온이 급강하면, 와이퍼 아암이 차체나 윈드글래스에 얼어붙어 작동이 되지 않는 문제점이 있었다.As described above, the wiper arm device for removing foreign matters and rainwater stacked on the surface of the windglass has a problem in that when the temperature drops sharply after a lot of snow or rain, the wiper arm freezes on the vehicle body or the windglass and does not work.

따라서, 본 발명은 상기와 같은 제반 결점을 해소하기 위하여 창출한 것으로서, 본 발명의 목적은 윈드글래스에 적층되어 있는 이물질이나 제거하거나 우천시 빗물을 제거하는데 이용되는 와이퍼가 기온이 급강하할 때 결빙되는 것을 방지하는 와이퍼의 결빙 방지 장치 및 그 방법을 제공하는데 있다.Therefore, the present invention has been created to solve the above-mentioned shortcomings, and an object of the present invention is that a wiper used to remove foreign matters or wind or rain water in rainy weather stacked on the windglass freezes when the temperature drops sharply. The present invention provides a wiper preventing apparatus and a method of preventing a wiper.

상기의 목적을 달성하기 위하여 본 발명에 따른 와이퍼 결빙 방지 장치는, 차량의 외기 온도를 감지하여 이에 해당된 데이터를 출력하는 온도 감지부와, 상기 온도 감지부에서 출력되는 데이터와 시동키의 작동에 따라 와이퍼 아암의 상승 작동을 제어하기 위한 소정의 스위칭 제어신호를 출력하는 콘트롤러와, 상기 콘트롤러에서 일정시간 출력되는 스위칭 제어신호에 의해서 작동하여 모터 구동 전원을 공급하는 스위칭부와, 상기 스위칭부의 작동에 따라 일정시간 작동하는 모터와, 상기 모터의 샤프트에 결합되어 있는 피니언과, 상기 피니언과 치합되어 와이퍼 아암 브레이드를 상하로 이동하는 래크로 구성된 것을 특징으로 한다.In order to achieve the above object, the wiper icing protection device according to the present invention includes a temperature sensing unit for sensing an outside air temperature of a vehicle and outputting data corresponding thereto, and the operation of the data and the start key output from the temperature sensing unit. A controller for outputting a predetermined switching control signal for controlling the raising operation of the wiper arm, a switching unit for supplying motor drive power by operating by a switching control signal output from the controller for a predetermined time, and for the operation of the switching unit. According to the present invention, the motor operates for a predetermined time, a pinion coupled to the shaft of the motor, and the pinion is engaged with the pinion, and a wiper arm braid moves up and down.

한편, 본 발명에 의한 와이퍼 결빙 방지 방법은, 시동 스위치가 오프된 상태에서 차량의 외부온도를 감지하여 이에 해당된 데이터를 출력하는 온도 감지 스텝과, 상기 온도 감지 스텝에서 감지한 온도가 일정치 이하인가를 판단하는 판단 스텝과, 상기 온도 판단 스텝에서 판단한 결과 일정온도 이하이면 소정시간 동안 모터를 정회전 시키는 모터 구동 스텝과, 상기 모터 구동 스텝에서 모터가 정회전하면 래크를 이동하여 와이퍼 아암을 차체와 분리하여 결빙을 방지하는 와이퍼 아암 상승 스텝으로 이루어 진 것을 특징으로 한다.On the other hand, in the wiper icing prevention method according to the present invention, the temperature sensing step of detecting the external temperature of the vehicle in the state that the start switch is turned off and outputs the data corresponding thereto, and the temperature detected by the temperature sensing step is below a certain value A determination step for determining the application; a motor driving step for rotating the motor forward for a predetermined time when the temperature determination step determines that the temperature is lower than a predetermined temperature; and if the motor rotates forward in the motor driving step, the rack is moved to move the wiper arm. Separated from and characterized in that made of a wiper arm rising step to prevent freezing.

도 1 은 본 발명에 의한 와이퍼 결빙 방지 장치를 나타낸 도면.1 is a view showing a wiper icing prevention device according to the present invention.

도 2 및 도 3 은 본 발명에 따른 와이퍼 결빙 방지 장치의 작동을 설명하는 프로우챠트.2 and 3 are procharts illustrating the operation of the wiper icing preventing device according to the present invention.

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

1. 시동 스위치 10. 온도 감지부1. Start switch 10. Temperature sensor

20. 콘트롤러 30. 스위칭부20. Controller 30. Switching unit

40. 모터 50. 피니언40. Motor 50. Pinion

60. 래크 70. 아암60.Rack 70.Arm

이하, 예시된 도면을 참조하여 본 발명을 더욱 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to the illustrated drawings.

도 1 은 본 발명에 의한 와이퍼 결빙 방지 장치를 나타낸 도면이다. 동 도면에서, 온도 감지부(10)는 차량의 외기 온도를 감지하여 이에 해당된 데이터를 출력하도록 온도 감지용 센서로 구성되어 있으며, 콘트롤러(20)는 상기 온도 감지부(10)에서 출력되는 데이터와 시동키(1)의 작동에 따라 와이퍼 아암의 상승시키거나 하강시키기 소정의 스위칭 제어신호를 출력하도록 되어 있다.1 is a view showing a wiper frost preventing device according to the present invention. In the figure, the temperature sensor 10 is configured as a temperature sensor for sensing the outside temperature of the vehicle and outputs the data corresponding thereto, the controller 20 is the data output from the temperature sensor 10 And a predetermined switching control signal for raising or lowering the wiper arm according to the operation of the start key 1.

한편, 스위칭부(30)는 상기 콘트롤러(20)에서 일정시간 출력되는 스위칭 제어신호에 의해서 작동하는 릴레이 등으로 구성되어 후술하는 모터(40)에 공급되는 구동전원(Vcc)을 온/오프하도록 구성되어 있으며, 모터(40)는 상기 스위칭부(30)의 작동에 따라 일정시간 작동하도록 구성되어 있다.On the other hand, the switching unit 30 is composed of a relay or the like operated by a switching control signal output from the controller 20 for a predetermined time is configured to turn on / off the driving power (Vcc) supplied to the motor 40 to be described later. The motor 40 is configured to operate for a predetermined time according to the operation of the switching unit 30.

그리고, 피니언(50)는 상기 모터(40)의 샤프트에 결합됨과 동시에 래크(60)와 치합되어 와이퍼 아암 브레이드(70)를 상하로 이동하도록 구성되어 있다.The pinion 50 is coupled to the shaft of the motor 40 and engaged with the rack 60 to move the wiper arm braid 70 up and down.

상기와 같은 실시 예를 와이퍼 결빙 방지 장치의 작동을 상세히 기술하면 다음과 같다.An embodiment of the above described in detail the operation of the wiper anti-ice device as follows.

본 발명에 의한 와이퍼 결빙 방지 장치가 장착된 차량을 도 2 의 스텝 S1과 같이 주차장에 주차한 후 운전자가 시동키(1)를 오프 하였는 가를 S2에서 판단하는데, 그 결과 시동 키(1)를 오프 하였으면, 콘트롤러(20)는 온도 감지부(10)에서 출력되는 데이터를 이용하여 스텝 S3과 같이 차량의 외부 온도가 일정온도 이하 인가를 판단한다.After parking the vehicle equipped with the wiper icing protection device according to the present invention in the parking lot as shown in step S1 of FIG. 2, it is determined in S2 whether the driver has turned off the ignition key 1, and as a result, the ignition key 1 is turned off. If so, the controller 20 uses the data output from the temperature sensing unit 10 to determine whether the outside temperature of the vehicle is below a predetermined temperature as in step S3.

상기에서 판단한 결과 차량의 외부 온도가 일정온도 이하이면, 콘트롤러(20)는 소정의 스위칭 제어신호를 스위칭부(30)에 공급하여 스텝 S4와 같이 스위칭부(30)의 릴레이(도면에 생략되어 있음)를 구동한다.As a result of the above determination, if the outside temperature of the vehicle is lower than or equal to a predetermined temperature, the controller 20 supplies a predetermined switching control signal to the switching unit 30 so that the relay of the switching unit 30 is omitted (as shown in step S4). ).

상기 스텝 S4에서 릴레이가 구동되면 모터(40)에 스텝 S5와 같이 구동전원(Vcc)이 스텝 S6과 같이 모터(40)가 정회전하므로 피니언(50)에 의해서 랙크(60)가 구동되어 아암(70)이 스텝 S7과 같이 상승하여 와이퍼가 기온이 급강하할 때 결빙되는 것을 방지한다.When the relay is driven in step S4, the drive power Vcc is rotated forward in the motor 40 as in step S5 as in step S6, and thus the rack 60 is driven by the pinion 50 so that the arm ( 70) rises as in step S7 to prevent the wiper from freezing when the temperature drops sharply.

상기 스텝 S7과 같이 아암(70)이 상승 완료되는 시점에 도달하면, 콘트롤러(20)는 스위칭부(30)에 공급되는 스위칭 제어신호를 차단하여 스텝 S8과 같이 스위칭부(30)인 릴레이에 공급되는 전원을 차단한다.When the arm 70 reaches the point at which the arm 70 is raised as in step S7, the controller 20 cuts off the switching control signal supplied to the switching unit 30 and supplies it to the relay which is the switching unit 30 as in step S8. Shut off the power supply.

한편, 도 3 의 스텝 S10과 같이 와이퍼 아암(70)이 상승된 대기 상태에서 운전자가 차량을 운전하고자 시동 스위치(1)를 “온”하였는 가를 스텝 S20에서 판단한 결과 시동 스위치(1)가 작동되었으면 스텝 S30, 스텝 S40으로 나아가서모터(40)가 스텝 S50과 같이 역회전하도록 스위칭부(30)의 릴레이를 작동하여 모터(40)에 전원을 공급한다.On the other hand, as shown in step S10 of FIG. 3, when it is determined in step S20 whether the driver has turned on the start switch 1 to drive the vehicle in the standby state in which the wiper arm 70 is raised, the start switch 1 is activated. In step S30 and step S40, the relay of the switching part 30 is operated so that the motor 40 may reverse rotation like step S50, and power is supplied to the motor 40. FIG.

상기와 같이 모터(40)가 역회전하여 피니언(50)이 초기 위치로 되돌아오면 아암(70)이 스텝 S60과 같이 정상적으로 자동 복귀된다.When the motor 40 reverses as described above and the pinion 50 returns to the initial position, the arm 70 automatically returns normally as in step S60.

상술한 본 발명에 의하면 차량의 외부온도를 감지하여 판단한 결과 일정온도 이하이면 자동으로 와이퍼 아암이 차체나 윈드글래스에 결빙되지 않도록 상승 시켜 결빙을 방지하는 효과가 있다.According to the present invention as described above by sensing the outside temperature of the vehicle as a result of determining the temperature below the predetermined wiper arm is automatically raised so as not to freeze on the vehicle body or windglass has the effect of preventing freezing.

Claims (2)

차량의 외기 온도를 감지하여 이에 해당된 데이터를 출력하는 온도 감지부와,A temperature sensor for detecting an outdoor temperature of the vehicle and outputting data corresponding thereto; 상기 온도 감지부에서 출력되는 데이터와 시동키의 작동에 따라 와이퍼 아암의 상승 및 하강 작동을 제어하기 위한 소정의 스위칭 제어신호를 출력하는 콘트롤러와,A controller for outputting a predetermined switching control signal for controlling the operation of raising and lowering the wiper arm according to the data output from the temperature sensing unit and the operation of the ignition key; 상기 콘트롤러에서 일정시간 출력되는 스위칭 제어신호에 의해서 작동하여 모터 구동 전원을 공급하는 스위칭부와,A switching unit operating by a switching control signal output from the controller for a predetermined time to supply a motor driving power; 상기 스위칭부의 작동에 따라 일정시간 작동하는 모터와,A motor that operates for a predetermined time according to the operation of the switching unit; 상기 모터의 샤프트에 결합되어 있는 피니언과,A pinion coupled to the shaft of the motor, 상기 피니언과 치합되어 와이퍼 아암 브레이드를 상하로 이동하는 래크로 구성된 것을 특징으로 하는 와이퍼 결빙 방지 장치.And a rack for engaging the pinion to move the wiper arm braid up and down. 시동 스위치가 오프된 상태에서 차량의 외부온도를 감지하여 이에 해당된 데이터를 출력하는 온도 감지 스텝과,A temperature sensing step of detecting an external temperature of the vehicle and outputting corresponding data when the start switch is turned off; 상기 온도 감지 스텝에서 감지한 온도가 일정치 이하인가를 판단하는 판단 스텝과,A determination step of determining whether the temperature detected in the temperature detection step is equal to or less than a predetermined value; 상기 온도 판단 스텝에서 판단한 결과 일정온도 이하이면 소정시간 동안 모터를 정회전 시키는 모터 구동 스텝과,A motor driving step of forwardly rotating the motor for a predetermined time as a result of the determination in the temperature determining step; 상기 모터 구동 스텝에서 모터가 정회면하면 래크를 이동하여 와이퍼 아암을 차체와 분리하여 결빙을 방지하는 와이퍼 아암 상승 스텝으로 이루어 진 것을 특징으로 하는 와이퍼 결빙 방지 방법.And a wiper arm raising step of moving the rack to separate the wiper arm from the vehicle body and preventing freezing when the motor is swung in the motor driving step.
KR1020020012175A 2002-03-07 2002-03-07 Froze preventing apparatus of automobile wiper KR20030072894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020020012175A KR20030072894A (en) 2002-03-07 2002-03-07 Froze preventing apparatus of automobile wiper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020020012175A KR20030072894A (en) 2002-03-07 2002-03-07 Froze preventing apparatus of automobile wiper

Publications (1)

Publication Number Publication Date
KR20030072894A true KR20030072894A (en) 2003-09-19

Family

ID=32223774

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020020012175A KR20030072894A (en) 2002-03-07 2002-03-07 Froze preventing apparatus of automobile wiper

Country Status (1)

Country Link
KR (1) KR20030072894A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190031798A (en) * 2017-09-18 2019-03-27 현대자동차주식회사 Apparatus, System and Method for floating wiper of vehicle
US10661757B2 (en) 2016-09-26 2020-05-26 Toyota Motor Engineering & Manufacturing North America, Inc. Systems, vehicles, and methods for automatically deploying a windshield wiper blade to a deployed position
KR102194209B1 (en) 2019-07-25 2020-12-22 고려대학교 세종산학협력단 Anti-freezing device of wiper blade

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10661757B2 (en) 2016-09-26 2020-05-26 Toyota Motor Engineering & Manufacturing North America, Inc. Systems, vehicles, and methods for automatically deploying a windshield wiper blade to a deployed position
KR20190031798A (en) * 2017-09-18 2019-03-27 현대자동차주식회사 Apparatus, System and Method for floating wiper of vehicle
KR102194209B1 (en) 2019-07-25 2020-12-22 고려대학교 세종산학협력단 Anti-freezing device of wiper blade

Similar Documents

Publication Publication Date Title
KR101082313B1 (en) Windshield wiper system for a motor system
JP4263188B2 (en) Automatic snow removal wiper system
US20070241612A1 (en) Periodically operated windshield wipers system and method
US5571221A (en) Automobile windshield wiper protection device
KR20030072894A (en) Froze preventing apparatus of automobile wiper
KR100570022B1 (en) Freezing prevent/remove apparatus for wind shield glass of vehicle
KR100401669B1 (en) Apparatus for preventing freezing wipers of vehicles automatically
KR100384037B1 (en) Device for protecting a snow wiper of an automobile
KR20100059008A (en) Rain sensing method
KR100229772B1 (en) Ice detecting apparatus of the windshield glass using voice signal
KR100431970B1 (en) Rear Wiper Operation Method of Vehicle
KR100655615B1 (en) Apparatus to prevent the wiper motor and the linkage to ice
KR101782092B1 (en) Wiper freeze prevention device for vehicle
KR19980046243U (en) Wiper drive control unit for wiper blade exchange
KR20020047412A (en) prevention apparatus and method of vehicle wiper-driving motor disorder
KR20040053476A (en) Rainwater excluding system of side mirror
KR19980020281A (en) Timer Mud Guard Height Adjust
KR19980026815A (en) Windshield Wiper Flotation Device
KR20200108974A (en) Device for automatic removal device of contaminant from automotive ADAS camera
KR19980020563U (en) Automatic control device of automobile windshield wiper
KR19980039462U (en) Windshield freezing protection device of automobile
KR19980013193U (en) Automotive wiper drive
KR19990025003A (en) Automotive wiper device
KR19980059458A (en) Wiper Speed Control
JPH06286584A (en) Freezing prevention device for window glass of automobile

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application