KR101491272B1 - Hydraulic circuit for controling sbw-type electronic parking assembly - Google Patents

Hydraulic circuit for controling sbw-type electronic parking assembly Download PDF

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KR101491272B1
KR101491272B1 KR20130078962A KR20130078962A KR101491272B1 KR 101491272 B1 KR101491272 B1 KR 101491272B1 KR 20130078962 A KR20130078962 A KR 20130078962A KR 20130078962 A KR20130078962 A KR 20130078962A KR 101491272 B1 KR101491272 B1 KR 101491272B1
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parking
pressure
supplied
passage
hydraulic
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KR20130078962A
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Korean (ko)
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KR20150005258A (en
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박진우
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현대 파워텍 주식회사
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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
    • 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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
    • 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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

본 발명은 전자 파킹 시스템에 관한 것으로, 라인압유로를 통해 라인압을 공급받는 감압밸브와, 감압밸브에 의해 감압된 상시유압을 감압유로를 통해 공급 받는 파킹피스톤과, 감압유로가 분기된 제1분기유압로를 통해 상시유압을 공급받는 On/Off솔레노이드 및 감압유로가 분기된 제2분기유압로를 통해 상시유압을 공급받는 제어밸브를 포함하며, 주행 중 유압계통에 기능고장이 발생할 경우, 파킹기어와 파킹폴의 결합이 방지되는 효과가 있는 는 SBW 타입 파킹구조체를 제어하는 유압회로를 제공한다.The present invention relates to an electronic parking system, and more particularly, to an electronic parking system that includes a pressure reducing valve that is supplied with line pressure through a line pressure passage, a parking piston that is normally supplied with hydraulic pressure reduced by the pressure reducing valve through a pressure reducing passage, An on / off solenoid which is always supplied with the hydraulic pressure through the branch hydraulic path, and a control valve which is always supplied with the hydraulic pressure through the second branch hydraulic pressure path branched from the pressure reducing flow path. When a malfunction occurs in the hydraulic system during traveling, The present invention provides a hydraulic circuit for controlling an SBW type parking structure having an effect of preventing engagement of a gear and a parking pole.

Description

SBW 타입 파킹구조체를 제어하는 유압회로{HYDRAULIC CIRCUIT FOR CONTROLING SBW-TYPE ELECTRONIC PARKING ASSEMBLY}HYDRAULIC CIRCUIT FOR CONTROLLING SBW-TYPE ELECTRONIC PARKING ASSEMBLY BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

본 발명은 유압회로에 관한 것으로, 더욱 상세하게는 파킹기어의 작동을 제어하는 유압회로에 상시유압을 공급하는 감압밸브를 장착하여 주행 중 파킹 체결 방지 기능이 구현된 SBW 타입 파킹구조체를 제어하는 유압회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic circuit, and more particularly, to a hydraulic circuit for controlling an SBW type parking structure in which a pressure reducing valve for supplying hydraulic pressure to the hydraulic circuit for controlling the operation of the parking gear is always provided, Circuit.

일반적으로, SBW(Shift by Wire) 타입 전자 파킹 구조는 밸브바디의 파킹바디 내부에 있는 파킹피스톤에 유압을 공급시켜 파킹을 해제하고, 파킹시에는 디텐트 레버(Detent Lever)에 연결되어 있는 디텐트 리턴 스프링(Detent Return Spring)의 복원력에 의해 파킹이 체결되는 구조이다.In general, a shift by wire (SBW) type electronic parking structure is constructed such that hydraulic pressure is supplied to a parking piston inside a parking body of a valve body to release parking, and when the parking piston is parked, a depent connected to a detent lever And the parking is locked by the restoring force of the return spring (detent return spring).

이러한 SBW 타입 전자 파킹 구조는 시동 On 상태에서는 파킹용 On/Off 솔레노이드 밸브를 On시켜 파킹 피스톤에 유압을 공급 하면 파킹이 해제되고, 파킹용 On/Off 솔레노이드 밸브를 Off시켜 파킹 피스톤에 유압을 차단하도록 한다.In the SBW type electronic parking structure, when the parking ON / OFF solenoid valve is ON and the hydraulic pressure is applied to the parking piston, the parking is released and the parking ON / OFF solenoid valve is turned OFF to shut off the hydraulic pressure to the parking piston do.

또한, 시동 Off 상태에서는 디턴트 리턴 스프링의 복원력에 의해 파킹이 체결된다. 이때, 디텐트 레버에 파킹 강제 해제용 케이블을 연결하여 파킹을 강제로 해제할 수 있다. In addition, in the starting off state, parking is locked by the restoring force of the return spring. At this time, the parking force releasing cable can be connected to the detent lever to forcibly release the parking.

그러나, 파킹 해제용 On/Off 솔레노이드 밸브의 자체고장 또는 전원 단선에 의해 On/Off 솔레노이드 밸브가 Off 되어 파킹 해제용 유압이 주행 중 차단 되는 경우 디턴트 리턴 스프링의 복원력에 의해 파킹이 체결되는 심각한 문제점이 있다.However, when the on / off solenoid valve is turned off due to the self-failure or disconnection of the on / off solenoid valve for parking release, the parking brake is tightened due to the restoring force of the return spring .

대한민국 공개특허공보 제10-2008-0038355호(2008.05.06.)Korean Patent Publication No. 10-2008-0038355 (2008.05.06.)

이에 상기와 같은 점을 감안하여 발명된 본 발명의 목적은, On/Off 솔레노이드 밸브에 기능고장이 발생할 경우에도 파킹폴이 파킹기어와 결합되는 것이 방지 됨으로써 주행 중 파킹 체결 방지 기능이 구현된 SBW 타입 파킹구조체를 제어하는 유압회로를 제공하는 것이다.SUMMARY OF THE INVENTION It is an object of the present invention, which has been made in view of the above circumstances, to provide a SBW type in which a parking pawl is prevented from being engaged with a parking gear even when a malfunction occurs in an On / Off solenoid valve, And to provide a hydraulic circuit for controlling the parking structure.

상기와 같은 목적을 달성하기 위한 본 발명의 SBW 타입 파킹구조체를 제어하는 유압회로에 따르면, 라인압유로를 통해 라인압을 공급받는 감압밸브와, 감압밸브에 의해 감압된 상시유압을 감압유로를 통해 공급 받는 파킹피스톤과, 감압유로가 분기된 제1분기유압로를 통해 상시유압을 공급받는 On/Off솔레노이드 및 감압유로가 분기된 제2분기유압로를 통해 상시유압을 공급받는 제어밸브를 포함하는 SBW 타입 파킹구조체를 제어하는 유압회로를 제공한다.According to the hydraulic circuit for controlling the SBW type parking structure of the present invention for achieving the above object, the hydraulic circuit for controlling the SBW type parking structure according to the present invention comprises a pressure reducing valve for supplying the line pressure through the line pressure passage, An on / off solenoid supplied with a constant oil pressure through a first branch hydraulic pressure path branched from the reduced pressure oil path, and a control valve supplied with a constant oil pressure through a second branched oil pressure path branched from the reduced pressure oil path, A hydraulic circuit for controlling an SBW type parking structure is provided.

본 발명의 하나의 측면에 의하면, On/Off솔레노이드와 제어밸브가 작동압유로로 연결되며, 제어밸브는 라인압이 공급된 라인압유로와 연결되며, 파킹피스톤과 제어밸브는 제어압유로로 연결될 수 있으며, 제2분기유압로를 통해 공급된 상시유압에 의해 라인압유로와 제어압유로를 차단하도록 제어밸브가 작동되며, 작동압유로를 통해 상시유압이 공급될 때 라인압유로와 제어압유로가 연통되도록 제어밸브가 작동될 수 있다.According to one aspect of the present invention, the On / Off solenoid and the control valve are connected to the operating pressure passage, the control valve is connected to the line pressure passage supplied with the line pressure, and the parking piston and the control valve are connected to the control pressure passage The control valve is operated so as to block the line pressure passage and the control pressure passage by the normal hydraulic pressure supplied through the second branch hydraulic pressure passage, and when the normal hydraulic pressure is supplied through the operation pressure passage, the line pressure passage and the control pressure passage The control valve can be operated.

본 발명의 다른 측면에 의하면, 파킹피스톤에는 감압유로를 통해 상시유압이 공급되는 제1 포트와, 제어압유로를 통해 라인압이 공급되는 제2 포트가 구비되며, 제1 포트 또는 제2 포트에 공급되는 유압에 의하여 제어되도록, 파킹피스톤의 내측에 구비된 피스톤과 연결된 로드와, 로드의 일측에 부착된 파킹폴과, 파킹폴과 착탈가능한 파킹기어로 구성된 파킹구조체를 더 포함할 수 있으며, 피스톤에는 파킹피스톤 외부로 돌출된 연장축이 구비되며, 연장축의 끝단에는 회전가능한 레버가 부착되고, 로드가 연장축과 수평하게 레버에 연결될 수 있다.According to another aspect of the present invention, the parking piston is provided with a first port through which the hydraulic pressure is constantly supplied through the reduced pressure passage and a second port through which the line pressure is supplied through the control pressure passage, and the first port or the second port The parking structure may further include a rod connected to the piston provided inside the parking piston to be controlled by the supplied hydraulic pressure, a parking pole attached to one side of the rod, and a parking structure composed of a parking pole and a detachable parking gear, An extension shaft projecting to the outside of the parking piston is provided, a rotatable lever is attached to the end of the extension shaft, and the rod can be connected to the lever horizontally to the extension shaft.

이러한 본 발명에 따른 SBW 타입 파킹구조체를 제어하는 유압회로에 의하면, 주행 중 On/Off 솔레노이드 밸브에 기능고장이 발생할 경우, 파킹기어와 파킹폴의 결합이 방지되는 효과가 있다.According to the hydraulic circuit for controlling the SBW type parking structure according to the present invention, when a malfunction occurs in the on / off solenoid valve during traveling, the coupling between the parking gear and the parking pawl is prevented.

또한, 유압회로 변경만으로 주행 중에 발생 가능한 파킹폴과 파킹기어의 결합이 방지됨으로 추가 부품 없이 제작이 가능하여 성능 향상과 원가 절감에 기여한다.In addition, since the coupling between the parking pawl and the parking gear, which can be generated while the vehicle is running, is prevented by merely changing the hydraulic circuit, it is possible to manufacture without additional parts, thereby contributing to improvement in performance and cost reduction.

도 1은 본 발명의 일 실시예의 SBW 타입 파킹구조체를 제어하는 유압회로에 구비된 파킹기어와 파킹폴의 체결상태를 나타낸 개요도,
도 2는 도 1의 SBW 타입 파킹구조체를 제어하는 유압회로에 구비된 레버와 리턴스프링의 결합 예시도,
도 3은 도 1의 SBW 타입 파킹구조체를 제어하는 유압회로의 파킹기어와 파킹폴의 체결해제 시 상태도,
도 4는 도 3의 SBW 타입 파킹구조체를 제어하는 유압회로에 구비된 파킹피스톤과 로드의 상태도,
도 5는 도 1의 SBW 타입 파킹구조체를 제어하는 유압회로의 파킹기어와 파킹폴의 체결 시 상태도,
도 6은 도 5의 SBW 타입 파킹구조체를 제어하는 유압회로에 구비된 파킹피스톤과 로드의 상태도이다.Brief Description of Drawings Fig. 1 is a schematic view showing a fastening state of a parking gear and a parking pawl provided in a hydraulic circuit for controlling an SBW type parking structure according to an embodiment of the present invention; Fig.
FIG. 2 is a view showing an example of a combination of a lever and a return spring provided in a hydraulic circuit for controlling the SBW type parking structure shown in FIG. 1;
Fig. 3 is a state diagram of the hydraulic circuit for controlling the SBW-type parking structure shown in Fig. 1 when the parking gear and the parking paw are disengaged;
Fig. 4 is a state diagram of a parking piston and a rod provided in the hydraulic circuit for controlling the SBW type parking structure shown in Fig. 3;
Fig. 5 is a state diagram of the parking gear and the parking paw of the hydraulic circuit for controlling the SBW type parking structure shown in Fig. 1,
6 is a state view of a parking piston and a rod provided in the hydraulic circuit for controlling the SBW type parking structure shown in FIG.

본 발명은 밸브바디에서 상시 형성되는 유압인 라인압 또는 솔레노이드 공급압을 파킹 피스톤과 연결된 기존 유로에 공급시켜 파킹을 해제시키고, 기존의 파킹 해제용 On/Off솔레노이드 밸브의 유압을 파킹 피스톤과 새롭게 연결된 유로에 공급시켜 파킹을 체결할 경우에만 On/Off 솔레노이드 밸브를 On 시켜 유압을 공급시킨다.In the present invention, the line pressure or the solenoid supply pressure, which is a hydraulic pressure normally formed in the valve body, is supplied to the existing oil passage connected to the parking piston to release the parking brake and the oil pressure of the existing parking release On / Off solenoid valve is newly connected to the parking piston On / Off solenoid valve is turned on to supply hydraulic pressure only when parking is tightened by supplying to the oil line.

시동Off시에는 기존과 동일하게 디턴트 리턴 스프링(Detent Return Spring)의 복원력에 의해 파킹이 체결되고, 시동 On시에는 항상 파킹 피스톤에 공급되는 유압에 의해 파킹이 해제되므로 파킹 체결용 On/Off솔레노이드 밸브가 고장이나 전원 단선시에도 항상 파킹이 해제된다.When the engine is started, the parking is locked by the restitution force of the return spring (detent return spring), and the parking is released by the hydraulic pressure supplied to the parking piston at all times when the engine is started. Parking is always released even when the valve is broken or power is disconnected.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명하며, 이러한 실시예는 일례로서 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 여러 가지 상이한 형태로 구현될 수 있으므로, 여기에서 설명하는 실시예에 한정되지 않는다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.

도 1은 본 발명의 일 실시예의 SBW 타입 파킹구조체를 제어하는 유압회로에 구비된 파킹기어와 파킹폴의 체결상태를 나타낸 개요도이고, 도 2는 도 1의 SBW 타입 파킹구조체를 제어하는 유압회로에 구비된 레버와 리턴스프링의 결합 예시도이다.FIG. 1 is a schematic view showing a state of engagement between a parking gear and a parking pawl provided in a hydraulic circuit for controlling an SBW type parking structure according to an embodiment of the present invention. FIG. 2 is a schematic view showing a hydraulic circuit for controlling the SBW- Fig. 7 is a view illustrating an example of a combination of a lever and a return spring.

도 1에 도시된 바와 같이, 본 발명의 일 실시예는 파킹피스톤(200)의 내측에 구비된 피스톤(220)과 연결된 로드(120)와, 로드(120)의 일측에 부착된 파킹폴(110)과, 파킹폴(110)과 착탈가능한 파킹기어(100)로 이루어지는 파킹구조체를 제어하기 위해서, 파킹피스톤(200)에 공급되는 유압을 제어하기 위한 유압회로에 관한 것이다.1, an embodiment of the present invention includes a rod 120 connected to a piston 220 provided inside a parking piston 200, a parking pole 110 attached to one side of the rod 120, The present invention relates to a hydraulic circuit for controlling a hydraulic pressure supplied to a parking piston 200 in order to control a parking structure composed of a parking pawl 110 and a detachable parking gear 100.

변속기에 구비된 파킹기어(100)와 체결됨으로써 차량을 정차하게 하는 파킹폴(110)을 제어하기 위하여, 파킹폴(110)의 일측으로 연장된 로드(120)가 회전 가능하도록 힌지로 고정된 레버(122)와 결합된다.A rod 120 extending to one side of the parking pawl 110 is rotatably supported by a lever fixed to the parking pawl 110 so as to be rotatable in order to control the parking pawl 110 which is engaged with the parking gear 100 provided in the transmission, (122).

레버(122)의 일측과 파킹피스톤(200)을 이루는 피스톤(220)의 일측으로 부터 파킹피스톤(200) 외부로 돌출된 연장축(221)이 연결되어 파킹피스톤(200)에 공급되는 유압에 의하여 레버(122)의 움직임을 제어하게 된다. An extension shaft 221 protruding from the one side of the lever 122 to the outside of the parking piston 200 is connected from one side of the piston 220 constituting the parking piston 200 and is connected to the parking piston 200 by the hydraulic pressure supplied to the parking piston 200 Thereby controlling the movement of the lever 122.

궁극적으로 파킹피스톤(200)에 공급되는 유압에 의해 레버(122)에 연결된 로드(120)의 이동을 제어함으로써 파킹폴(110)과 파킹기어(100)의 체결을 유지 또는 분리하게 된다.The engagement of the parking pawl 110 and the parking gear 100 is maintained or separated by controlling the movement of the rod 120 connected to the lever 122 by the hydraulic pressure supplied to the parking piston 200. [

도 2에 도시된 바와 같이, 레버(122)에는 디턴트리턴스프링(121)이 장착되는데, 디턴트리턴스프링(121)의 탄성력으로 로드(120)를 파킹기어(100) 방향으로 밀어 파킹폴(110)과 파킹기어(100)가 상시 체결 가능하도록 유지된다.2, a differential return spring 121 is mounted on the lever 122. The load 120 is pushed toward the parking gear 100 by the elastic force of the return spring 121, 110 and the parking gear 100 can be engaged at all times.

위와 같이 구성되는 SBW 타입 전자 파킹 구조체를 제어하기 위하여 밸브바디(VB) 내부에는 SBW 타입 파킹구조체를 제어하는 유압회로가 구비된다.In order to control the SBW type electronic parking structure configured as described above, a hydraulic circuit for controlling the SBW type parking structure is provided in the valve body VB.

도 3은 도 1의 SBW 타입 파킹구조체를 제어하는 유압회로의 파킹기어와 파킹폴의 체결해제 시 상태도이고, 도 4는 도 3의 SBW 타입 파킹구조체를 제어하는 유압회로에 구비된 파킹피스톤과 로드의 상태도이다.FIG. 3 is a state view showing a state in which the parking gear and the parking paw of the hydraulic circuit for controlling the SBW type parking structure shown in FIG. 1 are disengaged, FIG. 4 is a view showing the parking piston, which is provided in the hydraulic circuit for controlling the SBW- FIG.

감압밸브(500)는 미도시한 유압펌프로부터 라인압유로(L1)를 통해 라인압을 상시 공급받게 되며, 라인압유로(L1)를 통해 공급받은 라인압을 적정압으로 감압한 상시유압을 감압유로(A1)에 지속적으로 공급시킨다. The pressure reducing valve 500 is constantly supplied with line pressure from a hydraulic pump (not shown) through the line pressure passage L1. The pressure reducing valve 500 constantly reduces the line pressure, which is obtained by reducing the line pressure supplied through the line pressure passage L1, And continuously supplied to the flow path A1.

파킹피스톤(200)은 감압밸브(500)에 의해 감압된 상시유압을 감압유로(A1)를 통해 공급 받으며, On/Off솔레노이드(400)는 감압유로(A1)가 분기된 제1분기유압로(A2)를 통해 상시유압을 공급 받는다. The parking piston 200 is supplied with the normally hydraulic pressure reduced by the pressure reducing valve 500 through the pressure reducing passage A1 and the On / Off solenoid 400 is supplied to the first branching hydraulic pressure A2. ≪ / RTI >

제어밸브(300)는 감압유로(A1)가 분기된 제2분기유압로(A3)를 통해 상시유압을 공급 받음과 동시에, 제2라인압유로(L2)를 통해 라인압을 공급받게 된다.The control valve 300 receives the constant hydraulic pressure via the second branched hydraulic pressure passage A3 branched from the reduced pressure hydraulic passage A1 and receives the line pressure through the second line pressure passage L2.

On/Off솔레노이드(400)와 제어밸브(300)는 작동압유로(R)로 연결되며, 파킹피스톤(200)과 제어밸브(300)는 제어압유로(L3)로 연결되며, 제어밸브(300)는 라인압이 공급되는 제2라인압유로(L2)와 연결된다.The on / off solenoid 400 and the control valve 300 are connected to the operating pressure passage R. The parking piston 200 and the control valve 300 are connected to the control pressure passage L3, Is connected to the second line pressure passage L2 to which the line pressure is supplied.

On/Off솔레노이드(400)는 노말 클로즈드 구조(Normally Closed Construction)이다.The On / Off solenoid 400 is a normally closed construction.

파킹피스톤(200)에는 감압유로(A1)를 통해 상시유압이 공급되는 제1 포트(211)와, 제어압유로(L3)를 통해 라인압이 공급되는 제2 포트(212)가 구비된다.The parking piston 200 is provided with a first port 211 through which the hydraulic pressure is always supplied through the pressure reducing passage A1 and a second port 212 through which the line pressure is supplied through the control pressure passage L3.

제어밸브(300)는 제2분기유압로(A3)를 통해 공급된 상시유압에 의해 제2라인압유로(L2)와 제어압유로(L3)를 차단하도록 작동되며, 작동압유로(R)를 통해 상시유압이 공급될 때, 제2라인압유로(L2)와 제어압유로(L3)가 연통되도록 구성된다.The control valve 300 is operated to block the second line pressure passage L2 and the control pressure passage L3 by the constant oil pressure supplied through the second branch hydraulic pressure passage A3, The second line pressure passage L2 and the control pressure passage L3 are communicated with each other.

제2분기유압로(A3)를 통해 공급 받은 상시유압에 의해 제어밸브(300) 내부에 구비된 피스톤(미도시)이 가압되어 제어밸브(300) 일측에 밀착되며, 피스톤(300)에 의해 제어밸브(300)와 연결된 제2라인압유로(L2)에 공급된 라인압이 차단된다.A piston (not shown) provided inside the control valve 300 is pressurized by the constant hydraulic pressure supplied through the second branch hydraulic circuit A3 to be closely attached to one side of the control valve 300, Line pressure supplied to the second line pressure passage (L2) connected to the valve (300) is cut off.

감압유로(A1)를 통해 파킹피스톤(200)으로 지속적으로 공급되는 상시유압은, 파킹피스톤(200) 내부에 구비된 피스톤(220)을 제2 포트(212) 방향으로 가압하게 된다. The constant hydraulic pressure continuously supplied to the parking piston 200 through the pressure reducing passage A1 presses the piston 220 provided in the parking piston 200 toward the second port 212. [

피스톤(220)에 연결된 레버(122)는 힌지를 기준으로 반시계방향으로 회전하며 로드(120)를 리턴스프링(121)의 탄성력과 반대되는 방향으로 당기게 된다(도 4 참조). The lever 122 connected to the piston 220 rotates counterclockwise with respect to the hinge and pulls the rod 120 in a direction opposite to the elastic force of the return spring 121 (see FIG. 4).

로드(120)가 레버(122)에 의하여 당겨짐으로써 파킹기어(100)와 파킹폴(110)이 분리되며, 상시유압이 파킹피스톤(200)에 지속적으로 공급되므로, 그 분리가 유지된다.The load 120 is pulled by the lever 122 to separate the parking gear 100 from the parking pawl 110 and the oil pressure is constantly supplied to the parking piston 200 so that the separation is maintained.

감압밸브(500)를 통하여 별도의 제어 없이 지속적으로 5.5bar의 상시유압을 파킹피스톤(200)으로 공급하게 됨으로 On/Off솔레노이드(400)에 기능고장이 발생하더라도 파킹기어(100)와 파킹 폴(110)의 체결이 방지되는 효과가 있다. The hydraulic pressure of 5.5 bar is continuously supplied to the parking piston 200 through the pressure reducing valve 500 without any additional control so that the parking gear 100 and the parking pawl 100 can be operated even if the on / off solenoid 400 malfunctions. 110 are prevented from being fastened.

도 5는 도 1의 SBW 타입 파킹구조체를 제어하는 유압회로의 파킹기어와 파킹폴의 체결 시 상태도이고, 도 6은 도 5의 SBW 타입 파킹구조체를 제어하는 유압회로에 구비된 파킹피스톤과 로드의 상태도이다.FIG. 5 is a state view showing a state where the parking gear and the parking paw of the hydraulic circuit for controlling the SBW type parking structure shown in FIG. 1 are fastened together, and FIG. 6 is a view showing a state where the parking piston State diagram.

도 5에 도시된 바와 같이, On/Off솔레노이드(400)가 작동되었을 때, 상시유압이 작동압유로(R)를 통해 제어밸브(300)로 공급 된다. As shown in FIG. 5, when the On / Off solenoid 400 is operated, the constant oil pressure is supplied to the control valve 300 through the operating pressure passage R.

작동압유로(R)를 통해 상시유압이 제어밸브(300)로 공급됨으로써, 제2분기유압로(L3)를 통해 제어밸브(300)로 공급되던 상시유압과 상쇄되어 제어밸브(300)가 제2라인압유로(L2)와 제어압유로(L3)를 연통하도록 작동된다.The normal hydraulic pressure is supplied to the control valve 300 through the operating pressure passage R to cancel the normal hydraulic pressure supplied to the control valve 300 through the second branch hydraulic pressure passage L3, 2 line-pressure flow path L2 and the control pressure flow path L3.

제2분기유압로(L3)를 통해 제어밸브(300)로 공급된 상시유압에 의해 제어밸브(300) 내부 일측에 밀착되었던 피스톤(미도시)이 작동압유로(R)를 통해 공급된 상시유압에 의해 밀착이 해제되며, 제2라인압유로(L2)를 통해 라인압을 공급 받게 되며, 연통된 제어압유로(L3)로 라인압을 공급하게 된다.The piston (not shown), which has been brought into close contact with one side of the control valve 300 by the constant hydraulic pressure supplied to the control valve 300 through the second branch hydraulic pressure passage L3, The line pressure is supplied through the second line pressure passage L2, and the line pressure is supplied to the communicating control pressure passage L3.

제2라인압유로(L2)와 연통된 제어압유로(L3)를 통하여 라인압이 파킹피스톤(200)을 구성하는 실린더(210) 내부로 공급되는데, 피스톤(220)을 제1 포트(211) 방향으로 가압함으로써 피스톤(220)을 제2 포트(212) 방향으로 가압하던 상시유압과 상쇄된다.The line pressure is supplied into the cylinder 210 constituting the parking piston 200 through the control pressure passage L3 communicated with the second line pressure passage L2. The piston 220 is connected to the first port 211, So as to be offset from the normal hydraulic pressure that presses the piston 220 in the direction of the second port 212.

이때, 라인압은 상시유압 보다 큰 16bar 이므로, 피스톤(220)이 제1 포트(211) 방향으로 밀리게 되며, 피스톤(220)과 연결된 레버(122)가 힌지를 기준으로 시계 방향으로 회전하며 로드(120)를 파킹기어(100) 방향으로 밀게 된다(도 6 참조).The piston 220 is pushed toward the first port 211 and the lever 122 connected to the piston 220 rotates clockwise with respect to the hinge, (See Fig. 6).

파킹피스톤(200)은 디턴트리턴스프링(121)의 탄성력과 동일한 방향으로 로드(120)에 힘을 가하게 됨으로써 파킹기어(100)와 파킹 폴(110)을 결합시키고 그 결합을 유지시키게 된다.The parking piston 200 applies force to the rod 120 in the same direction as the elastic force of the return spring 121 so that the parking gear 100 and the parking pawl 110 are engaged and maintained.

100: 파킹기어 110: 파킹 폴 120: 로드
121: 디턴트리턴스프링 200: 파킹피스톤 210: 실린더
220: 피스톤 300: 제어밸브 400: On/Off솔레노이드
500: 감압밸브 L1: 라인압유로 L2: 제2라인압유로
L3: 제어압유로 A1: 감압유로 A2: 제1분기유압로
A3: 제2분기유압로 R: 작동압유로100: parking gear 110: parking pole 120: rod
121: Dental return spring 200: Parking piston 210: Cylinder
220: Piston 300: Control valve 400: On / Off solenoid
500: Reducing valve L1: Line pressure passage L2: Second line pressure passage
L3: Control pressure passage A1: Decompression passage A2: First branch hydraulic pressure
A3: 2nd quarter hydraulic pressure R: Operating pressure oil

Claims (8)

라인압유로를 통해 라인압을 공급받는 감압밸브;
상기 감압밸브에 의해 감압된 상시유압을 감압유로를 통해 공급 받는 파킹피스톤;
상기 감압유로가 분기된 제1분기유압로를 통해 상시유압을 공급받는 On/Off솔레노이드; 및
상기 감압유로가 분기된 제2분기유압로를 통해 상시유압을 공급받는 제어밸브;를 포함하며,
상기 On/Off솔레노이드와 상기 제어밸브가 작동압유로로 연결된 것을 특징으로 하는 SBW 타입 파킹구조체를 제어하는 유압회로.A pressure reducing valve that is supplied with the line pressure through the line pressure passage;
A parking piston which is supplied with the normally hydraulic pressure reduced by the pressure reducing valve through the pressure reducing passage;
An On / Off solenoid for constantly supplying hydraulic pressure through the first branched hydraulic pressure passage branched from the reduced pressure hydraulic passage; And
And a control valve that is always supplied with the hydraulic pressure through the second branched hydraulic pressure passage branched from the reduced pressure passage,
And wherein the on / off solenoid and the control valve are connected by an operating pressure passage. 삭제delete 제1항에 있어서,
상기 제어밸브는 라인압이 공급된 제2라인압유로와 연결된 것을 특징으로 하는 SBW 타입 파킹구조체를 제어하는 유압회로.The method according to claim 1,
Wherein the control valve is connected to a second line pressure passage to which a line pressure is supplied. 제3항에 있어서,
상기 제어밸브로부터 상기 파킹피스톤으로 라인압을 공급하기 위한 제어압유로가 상기 제어밸브와 상기 파킹피스톤 사이에 구비된 것을 특징으로 하는 SBW 타입 파킹구조체를 제어하는 유압회로.The method of claim 3,
And a control pressure passage for supplying a line pressure from the control valve to the parking piston is provided between the control valve and the parking piston. 제4항에 있어서,
상기 제어밸브는 상기 제2분기유압로를 통해 공급된 상시유압에 의해 상기 제2라인압유로와 상기 제어압유로를 차단하도록 작동되며,
상기 작동압유로를 통해 상시유압이 공급될 때, 상기 제2라인압유로와 상기 제어압유로가 연통되도록 작동되는 것을 특징으로 하는 SBW 타입 파킹구조체를 제어하는 유압회로.5. The method of claim 4,
The control valve is operated to block the second line pressure passage and the control pressure passage by the constant oil pressure supplied through the second branch hydraulic pressure passage,
And the second line pressure passage and the control pressure passage are communicated with each other when the hydraulic pressure is always supplied through the operating pressure passage. 제5항에 있어서,
상기 파킹피스톤에는 상기 감압유로를 통해 상시유압이 공급되는 제1 포트와, 상기 제어압유로를 통해 라인압이 공급되는 제2 포트가 구비된 것을 특징으로 하는 SBW 타입 파킹구조체를 제어하는 유압회로.6. The method of claim 5,
Wherein the parking piston is provided with a first port through which the hydraulic pressure is constantly supplied through the reduced pressure passage and a second port through which the line pressure is supplied through the control pressure passage. 제6항에 있어서,
상기 제1 포트 또는 상기 제2 포트에 공급되는 유압에 의하여 제어되도록,
상기 파킹피스톤의 내측에 구비된 피스톤과 연결된 로드;
상기 로드의 일측에 부착된 파킹폴;
상기 파킹폴과 착탈가능한 파킹기어;로 이루어지는 파킹구조체를 더 포함하는 것을 특징으로 하는 SBW 타입 파킹구조체를 제어하는 유압회로.The method according to claim 6,
The first port or the second port is controlled by the hydraulic pressure supplied to the first port or the second port,
A rod connected to a piston provided inside the parking piston;
A parking pole attached to one side of the rod;
Further comprising a parking structure composed of said parking pawl and a detachable parking gear. ≪ Desc / Clms Page number 19 > 제7항에 있어서,
상기 피스톤은 상기 파킹피스톤 외부로 돌출된 연장축이 구비되며, 상기 연장축의 끝단에는 회전가능한 레버가 부착되고, 상기 로드가 상기 연장축과 수평하게 상기 레버에 연결된 것을 특징으로 하는 SBW 타입 파킹구조체를 제어하는 유압회로.
8. The method of claim 7,
Wherein the piston is provided with an extension shaft protruding outside the parking piston, a rotatable lever is attached to an end of the extension shaft, and the rod is connected to the lever horizontally with the extension shaft. Hydraulic circuit to control.
KR20130078962A 2013-07-05 2013-07-05 Hydraulic circuit for controling sbw-type electronic parking assembly KR101491272B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06174085A (en) * 1992-12-02 1994-06-21 Toyota Motor Corp Hydraulic parking device for automatic transmission
JP2002053027A (en) 2000-08-09 2002-02-19 Kawasaki Heavy Ind Ltd Negative brake releasing device for construction machine
JP2009068588A (en) 2007-09-12 2009-04-02 Aisin Aw Co Ltd Range switching device
JP2010210021A (en) 2009-03-10 2010-09-24 Aisin Aw Co Ltd Hydraulic control device for automatic transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06174085A (en) * 1992-12-02 1994-06-21 Toyota Motor Corp Hydraulic parking device for automatic transmission
JP2002053027A (en) 2000-08-09 2002-02-19 Kawasaki Heavy Ind Ltd Negative brake releasing device for construction machine
JP2009068588A (en) 2007-09-12 2009-04-02 Aisin Aw Co Ltd Range switching device
JP2010210021A (en) 2009-03-10 2010-09-24 Aisin Aw Co Ltd Hydraulic control device for automatic transmission

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