KR100254996B1 - Parking brake apparatus of an electric vehicle - Google Patents

Parking brake apparatus of an electric vehicle Download PDF

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Publication number
KR100254996B1
KR100254996B1 KR1019970076660A KR19970076660A KR100254996B1 KR 100254996 B1 KR100254996 B1 KR 100254996B1 KR 1019970076660 A KR1019970076660 A KR 1019970076660A KR 19970076660 A KR19970076660 A KR 19970076660A KR 100254996 B1 KR100254996 B1 KR 100254996B1
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South Korea
Prior art keywords
electric vehicle
parking
vehicle
parking brake
lever
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KR1019970076660A
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Korean (ko)
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KR19990056654A (en
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박동주
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정몽규
현대자동차주식회사
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Priority to KR1019970076660A priority Critical patent/KR100254996B1/en
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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
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
    • 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
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

PURPOSE: A parking brake device of an electric vehicle is provided to prevent the damage of a driving gear by controlling an actuation of a locking system for stopping rotation of the driving gear despite converting a transmission into a parking range before perfectly stopping the electric vehicle. CONSTITUTION: A parking brake in an electric vehicle device comprises a brake control unit regulating actuation of a fixing lever(3) while a vehicle is not stopped; a locking rod(9) mounted between a driving gear(1) and the fixing lever; a relay(10) applying an actuation signal to the locking rod; a power transistor(11) supplying a connection signal into the relay; and a motor control unit(12) applying the connection signal into the power transistor while vehicle velocity is zero. Thereby, the electric vehicle actuates the brake control unit despite changing a shift lever(7) into the parking range to stop the vehicle or to prevent the damage of a gear tooth in the driving gear by the fixing lever.

Description

전기자동차의 주차제동장치Parking brake system for electric vehicles

본 발명은 전기자동차의 주차제동장치에 관한 것으로, 특히 차량이 완전 정치전에 변속레버가 파킹모드로 절환될 때에 록킹시스템의 작동을 제한하도록 구성되어 기어의 손상을 방지하면서 이에 따른 내구성을 지속시킬 수 있도록 된 전기자동차의 주차제동장치에 관한 것이다.The present invention relates to a parking braking apparatus for an electric vehicle, and in particular, is configured to limit the operation of the locking system when the shift lever is switched to the parking mode before the vehicle is completely stationary, thereby preventing damage to the gear and thus maintaining durability thereof. It relates to a parking brake of an electric vehicle.

일반적으로 전기자동차는 차량내 탑제된 충전지를 동력원으로 하여 구동되는 것인 바, 이와 같은 전기자동차는 운행시 유해 배기가스를 배출하지 않기 때문에 환경보전의 차원에서는 매우 긍정적인 것이다.In general, the electric vehicle is driven by a built-in rechargeable battery in the vehicle as a power source, such an electric vehicle is very positive in terms of environmental conservation because it does not emit harmful exhaust gas during operation.

한편, 상기와 같은 전기자동차에서도 일반 화석연료를 사용하는 차량과 마찬가지로 주행중 변속모드를 운전자의 임의대로 변환시키도록 된 변속장치를 갖추고 있으며, 차륜을 구동시키는 구동계통은 차량내 탑제된 충전지로부터 전원을 공급받아 회전하는 모터에 구동기어와 종동기어가 맞물려 이를 매개로 구동축이 회전되도록 되어 있다.On the other hand, the electric vehicle as described above is equipped with a transmission device for converting the shift mode at the driver's discretion, as in the case of vehicles using ordinary fossil fuel, and the drive system for driving the wheels is to supply power from the onboard rechargeable battery in the vehicle. The driving gear and the driven gear are engaged with the supplied rotating motor, so that the driving shaft is rotated.

그리고, 전기자동차에서도 주차제동장치가 있는 바, 이 주차브레이크는 변속단이 파킹레인지로 위치할 경우에 작동되는 것이다.In addition, there is a parking brake in an electric vehicle, and the parking brake is operated when the shift stage is located in the parking range.

즉, 변속기의 변속단이 파킹레인지로 변속될 경우 록킹시스템이 작용되는 전기자동차의 주차브레이크는 도 1에 도시된 바와 같이, 모터측의 회전축에 고정된 구동기어(21)의 하부에 리턴스프링(22)을 매개로 탄력적으로 회동가능하게 고정레버(23)가 설치되고, 이 고정레버(23)의 하부에는 이와 접촉되는 캠(24)이 장착된 주차로드(25)가 설치되며, 이 주차로드(25)는 다수개의 링크부재(26)를 매개로 변속기의 변속레버(27)에 연결되어 있다.That is, when the shift stage of the transmission shifts to the parking range, the parking brake of the electric vehicle to which the locking system is applied is returned to the lower portion of the driving gear 21 fixed to the rotating shaft on the motor side as shown in FIG. The fixing lever 23 is installed to be elastically rotatable via the medium 22, and the lower portion of the fixing lever 23 is provided with a parking rod 25 equipped with a cam 24 in contact therewith. 25 is connected to the shift lever 27 of the transmission via a plurality of link members 26.

도면중 미설명부호 28은 상기 구동기어(21)에 치합되어 구동축으로 동력을 전달하는 종동기어이다.In the figure, reference numeral 28 is a driven gear that is engaged with the drive gear 21 to transfer power to the drive shaft.

따라서 주차시 운전자가 상기 변속레버(27)를 파킹레인지로 둘 경우에는 상기 링크부재(26)가 적절히 작동하여 선단에 캠(24)을 장착한 주차로드(25)를 밀어 상방향으로 회동시키게 되고, 이에 따라 상기 고정레버(23)는 구동기어(21)의 기어치 사이에 치합되면서 주차제동력을 발휘하게 된다.Therefore, when the driver puts the shift lever 27 in the parking range during parking, the link member 26 operates properly to push the parking rod 25 equipped with the cam 24 at the tip to rotate upward. Thus, the fixed lever 23 is engaged between the gear teeth of the drive gear 21 to exert a parking braking force.

그런데 상기 전기자동차가 주행중 차속을 서서히 감속시켜 정지시키고자 할 때에, 운전자가 실수로 미처 차량이 완전히 정차하기 전에 상기 변속레버(27)를 파킹레인지에 두게 되면, 상기 주차로드(25)가 링크부재(26)에 의해 가압되어 캠(24)으로 하여금 고정레버(23)를 상방향으로 회동시켜 회전중인 구동기어(21)에 치합되게 하는데, 이와 같이 회전중인 구동기어(21)에 고정레버(23)가 치합되어 구동기어(21)의 회전이 강제로 멈춰지게 되면, 차량이 덜컹거리며 정지하게 되거나, 상기 구동기어(21)의 기어치가 고정레버(23)에 의해 손상을 입게 되는 단점이 있었다.However, when the electric vehicle is to slowly decelerate and stop the vehicle speed while driving, if the driver accidentally puts the shift lever 27 in the parking range before the vehicle stops completely, the parking rod 25 is a link member. Pressed by the 26 to cause the cam 24 to rotate in the upward direction so that the fixed lever 23 is engaged with the rotating drive gear 21. Thus, the fixed lever 23 is rotated to the rotating drive gear 21. When the rotation of the driving gear 21 is forcibly stopped by the coupling, the vehicle may rattle and stop, or the gear value of the driving gear 21 may be damaged by the fixing lever 23.

이에 본 발명은 상기한 단점을 해소하기 위해 안출된 것으로, 주행중인 전기자동차가 완전히 정지하기 전에 운전자에 의해 변속기가 파킹레인지로 절환되어도 구동기어의 회전이 저지되게 하는 록킹시스템의 작동을 강제적으로 제한되게 구성함으로써, 구동기어의 손상을 방지하면서 이에 따른 내구성을 지속시킬 수 있도록 된 전기자동차의 주차제동장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above-mentioned drawback, and forcibly restricts the operation of the locking system to stop the rotation of the drive gear even when the transmission is switched to the parking range by the driver before the driving electric vehicle is completely stopped. It is an object of the present invention to provide a parking brake device for an electric vehicle that can prevent damage to the drive gear and thus maintain durability.

도 1은 종래 기술에 따른 전기자동차의 주차제동장치의 구성도,1 is a block diagram of a parking brake device for an electric vehicle according to the prior art,

도 2는 본 발명에 따른 전기자동차의 주차제동장치의 구성도이다.2 is a block diagram of a parking braking apparatus for an electric vehicle according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1-구동기어 2-리턴스프링1-Drive Gear 2-Return Spring

3-고정레버 4-캠3-fixed lever 4-cam

5-주차로드 6-링크부재5-parking rod 6-link member

7-변속레버 8-종동기어7-shift lever 8-driven gear

9-록킹로드 10-릴레이9-locking rod 10-relay

11-파워트랜지스터 12-모터제어유니트11-power transistor 12-motor control unit

상기한 바의 목적을 달성하기 위한 본 발명은, 모터에 연결된 구동기어의 하부에 리턴스프링을 매개로 탄력적으로 회동가능하게 설치된 고정레버와, 이 고정레버의 하부에 이와 접촉되는 캠을 선단에 장착하고서 설치된 주차로드, 이 주차로드에 다수개의 링크부재를 매개로 연결된 변속기의 변속레버로 구성되어 이루어지는 전기자동차의 주차제동장치에 있어서, 상기 구동기어와 고정레버 사이에는 주차제동시 차량이 완전히 정지하지 않을 경우 상기 고정레버의 작동을 제한하도록 된 제동제한수단이 부가되어 있다.The present invention for achieving the above object is, the lower end of the drive gear connected to the motor is provided with a fixed lever that is elastically rotatable via a return spring, and the lower end of the fixed lever is mounted on the cam in contact with the cam A parking brake of an electric vehicle, comprising: a parking rod installed thereon; and a transmission lever of a transmission connected to the parking rod via a plurality of link members. The vehicle does not stop completely when the parking brake is applied between the driving gear and the fixed lever. In this case, a brake limiting means for limiting the operation of the fixed lever is added.

이하 본 발명을 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 전기자동차의 주차제동장치의 구성도이다.2 is a block diagram of a parking braking apparatus for an electric vehicle according to the present invention.

본 발명은 도면에 도시된 바와 같이, 모터측의 회전축에 고정된 구동기어(1)의 하부에 리턴스프링(2)을 매개로 탄력적으로 회동가능하게 설치된 고정레버(3)와, 이 고정레버(3)의 하부에 이와 접촉되는 캠(4)을 선단에 장착하고서 설치된 주차로드(5), 이 주차로드(5)에 다수개의 링크부재(6)를 매개로 연결된 변속기의 변속레버(7)로 구성되어 이루어지는 전기자동차의 주차제동장치에 있어서, 상기 구동기어(1)와 고정레버(3) 사이에는 주차제동시 차량이 완전히 정지하지 않을 경우 상기 고정레버(3)의 작동을 제한하도록 된 제동제한수단이 설치되어 있다.The present invention, as shown in the figure, a fixed lever (3) is installed in the lower portion of the drive gear (1) fixed to the rotating shaft on the motor side via a return spring (2) to be elastically rotatable, and the fixed lever ( 3) a parking rod (5) installed by attaching a cam (4) in contact with the lower portion of the lower end thereof, and a shift lever (7) of a transmission connected to the parking rod (5) via a plurality of link members (6). In the parking brake device for an electric vehicle that is configured, the braking limiting means between the drive gear (1) and the fixed lever (3) to limit the operation of the fixed lever (3) when the vehicle does not stop completely during parking braking Is installed.

여기서 상기 제동제한수단은 상기 구동기어(1)와 고정레버(3) 사이로 설치되는 록킹로드(9)와, 이 록킹로드(9)에 작동신호를 인가하도록 된 릴레이(10), 이 릴레이(10)에 접속신호를 인가하도록 된 파워트랜지스터(11), 이 파워트랜지스터(11)에 연결되어 차속이 영일 경우에만 파워트랜지스터(11)로 접속신호를 인가하도록 된 모터제어유니트(12)로 구성된다.Here, the braking limiting means includes a locking rod (9) installed between the drive gear (1) and the fixed lever (3), a relay (10) adapted to apply an operating signal to the locking rod (9), and the relay (10). And a motor control unit 12 connected to the power transistor 11 to apply the connection signal to the power transistor 11 only when the vehicle speed is zero.

도면중 미설명부호 8은 상기 구동기어(1)에 치합되어 구동축으로 동력을 전달하는 종동기어이다.In the figure, reference numeral 8 denotes a driven gear that is engaged with the drive gear 1 and transmits power to the drive shaft.

이에 따라, 운전자가 주행중 전기자동차의 차속을 서서히 감속시켜 정지시키고자 할 때에, 실수로 미처 차량이 완전히 정차하기 전에 상기 변속레버(7)를 파킹레인지에 두게 되면, 상기 모터제어유니트(12)에서는 현재의 차속을 검출하여 차량이 정차상태가 아님을 인지하고서 상기 파워트랜지스터(11)에 접속신호를 보내게 되고, 이에 따라 상기 파워트랜지스터(11)는 온되어 릴레이(10)로 접속신호를 보내게 되며, 이에 따라 상기 릴레이(10)도 온되어 록킹로드(9)로 작동신호를 보내게 된다.Accordingly, when the driver slowly decelerates and stops the vehicle speed of the electric vehicle while driving, if the shift lever 7 is placed in the parking range before the vehicle stops by mistake, the motor control unit 12 By detecting the current vehicle speed and recognizing that the vehicle is not in a stopped state, it sends a connection signal to the power transistor 11, whereby the power transistor 11 is turned on to send a connection signal to the relay 10. Accordingly, the relay 10 is also turned on to send an operation signal to the locking rod 9.

이후 상기 록킹로드(9)는 작동신호에 의해 동작하여 상기 구동기어(1)와 고정레버(3) 사이로 돌출하게 되고, 이에 따라 상기 변속레버(7)가 파킹레인지로 이동함으로써 작동되는 링크부재(6)와 주차로드(5)를 매개로 회동되는 고정레버(3)는 상기 록킹로드(9)에 의해 회동이 저지받게 되므로 구동기어(1)상으로 치합되지 않게 된다.Thereafter, the locking rod 9 is operated by an operation signal to protrude between the drive gear 1 and the fixed lever 3, and thus the link member 7 is operated by moving the shift lever 7 to the parking range. 6) and the fixed lever (3) rotated through the parking rod (5) is prevented from engaging on the drive gear (1) because the rotation is blocked by the locking rod (9).

한편, 차량이 완전히 정지한 다음 상기 변속레버(7)가 파킹레인지에 옮겨가게 되면, 상기 모터제어유니트(12)가 파워트랜지스터(11)로 접속신호를 인가하지 않게 되므로, 정상적인 주차제동작동이 이루어지게 된다.On the other hand, if the shift lever 7 is moved to the parking range after the vehicle is completely stopped, the motor control unit 12 does not apply a connection signal to the power transistor 11, so that normal parking braking operation is performed. do.

따라서 상기와 같이, 전기자동차는 차체가 완전히 정차하지 않을 경우에 운전자의 조작실수로 상기 변속레버(7)가 파킹레인지로 절환되더러도 상기 제동제한수단이 작동되게 되므로, 차량이 덜컹거리며 정지하거나, 상기 구동기어(1)의 기어치가 고정레버(3)에 의해 손상을 입게 되지 않게 된다.Therefore, as described above, when the vehicle body is not completely stopped, the braking limiting means is operated even when the shift lever 7 is switched to the parking range due to a driver's mistake. The gear teeth of the drive gear 1 are not damaged by the fixed lever 3.

이상 설명한 바와 같이 본 발명에 따른 전기자동차의 주차제동장치에 의하면, 주행중인 전기자동차가 완전히 정지하기 전에 운전자에 의해 변속기가 파킹레인지로 절환되어도 제동제한수단이 작동되므로, 상기 구동기어의 손상과 같은 부품의 내구성 저하를 방지할 수 있으므로 상품성이 증대되는 효과가 있게 된다.As described above, according to the parking brake apparatus for an electric vehicle according to the present invention, the braking limiting means is operated even if the transmission is switched to the parking range by the driver before the driving electric vehicle is completely stopped. Since the durability of the parts can be prevented from being lowered, there is an effect of increasing the commerciality.

Claims (2)

모터에 연결된 구동기어(1)의 하부에 리턴스프링(2)을 매개로 탄력적으로 회동가능하게 설치된 고정레버(3)와, 이 고정레버(3)의 하부에 이와 접촉되는 캠(4)을 선단에 장착하고서 설치된 주차로드(5), 이 주차로드(5)에 다수개의 링크부재(6)를 매개로 연결된 변속기의 변속레버(7)로 구성되어 이루어지는 전기자동차의 주차제동장치에 있어서,The lower end of the drive gear (1) connected to the motor is provided with a fixed lever (3), which is elastically rotatable via a return spring (2), and a cam (4) in contact with the lower part of the fixed lever (3). In a parking brake of an electric vehicle, comprising a parking rod (5) attached to and mounted to the parking rod (5), and a shift lever (7) of a transmission connected via a plurality of link members (6) to the parking rod (5). 상기 구동기어(1)와 고정레버(3) 사이에는 주차제동시 차량이 완전히 정지하지 않을 경우 상기 고정레버(3)의 작동을 제한하도록 된 제동제한수단이 부가된 것을 특징으로 하는 전기자동차의 주차제동장치.Parking brake of the electric vehicle, characterized in that between the drive gear (1) and the fixed lever (3) is provided with a braking limiting means for limiting the operation of the fixed lever (3) when the vehicle does not stop completely when the parking brake. Device. 제 1 항에 있어서, 상기 제동제한수단은 구동기어(1)와 고정레버(3) 사이로 설치되는 록킹로드(9)와, 이 록킹로드(9)에 작동신호를 인가하도록 된 릴레이(10), 이 릴레이(10)에 접속신호를 인가하도록 된 파워트랜지스터(11), 이 파워트랜지스터(11)에 연결되어 차속이 영일 경우에만 파워트랜지스터(11)로 접속신호를 인가하도록 된 모터제어유니트(12)로 구성된 것을 특징으로 하는 전기자동차의 주차제동장치.2. The locking rod (9) according to claim 1, wherein the braking limiting means includes a locking rod (9) installed between the drive gear (1) and the fixed lever (3), a relay (10) for applying an operating signal to the locking rod (9), A power transistor 11 adapted to apply a connection signal to the relay 10 and a motor control unit 12 connected to the power transistor 11 to apply a connection signal to the power transistor 11 only when the vehicle speed is zero; Parking brake device for an electric vehicle, characterized in that consisting of.
KR1019970076660A 1997-12-29 1997-12-29 Parking brake apparatus of an electric vehicle KR100254996B1 (en)

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