KR20110054981A - Independent type steer-by-wire apparatus - Google Patents

Independent type steer-by-wire apparatus Download PDF

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Publication number
KR20110054981A
KR20110054981A KR1020090111820A KR20090111820A KR20110054981A KR 20110054981 A KR20110054981 A KR 20110054981A KR 1020090111820 A KR1020090111820 A KR 1020090111820A KR 20090111820 A KR20090111820 A KR 20090111820A KR 20110054981 A KR20110054981 A KR 20110054981A
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South Korea
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center
variable
pinion
center area
rack gear
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KR1020090111820A
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Korean (ko)
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황성욱
한민우
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현대자동차주식회사
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Priority to KR1020090111820A priority Critical patent/KR20110054981A/en
Publication of KR20110054981A publication Critical patent/KR20110054981A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/001—Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup
    • B62D5/005—Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup means for generating torque on steering wheel or input member, e.g. feedback
    • B62D5/006—Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup means for generating torque on steering wheel or input member, e.g. feedback power actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0421—Electric motor acting on or near steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/03—Reducing weight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/05—Reducing production costs, e.g. by redesign
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/40—Actuators for moving a controlled member
    • B60Y2400/405—Electric motors actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/40—Actuators for moving a controlled member
    • B60Y2400/418—Power assistance, e.g. servo-motors
    • B60Y2400/4187—Servo-motors, e.g. electric or fluidic with feedback control

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE: An independent type steer-by-wire apparatus is provided to improve manipulation response rate and improve the stable straight stability of a vehicle. CONSTITUTION: An independent type steer-by-wire apparatus comprises a variable rack gear(5), a variable pinion gear(11), and a drive motor. An on-center area(1) and an off-center area(3) are placed on the same line in the variable rack gear. A space is formed between the on-center areas. The variable rack gear is inclined downward to the edge from the on-center area. The variable pinion gear comprises on-center pinion and the off-center pinion which are integrated with one rotary shaft. The variable rack gear has an on-center area on both sides of the off-center area. The drive motor rotates the variable pinion gear.

Description

독립형 스티어바이와이어 장치{Independent Type Steer-By-Wire Apparatus}Independent Type Steer-By-Wire Apparatus

본 발명은 차량의 독립형 스티어바이와이어 장치에 관한 것으로서, 보다 상세하게는 차량의 좌우에서 각각 랙기어와 피니언기어로 조향력을 형성하도록 하는 좌우 독립형 스티어바이와이어 장치에 관한 기술이다.The present invention relates to a stand-alone steer-by-wire device of a vehicle, and more particularly, to a left and right stand-alone steer-by-wire device for forming steering force on a rack gear and a pinion gear, respectively, on the left and right sides of a vehicle.

스티어바이와이어 장치는 스티어링휠과 조향륜 사이의 기계적인 연결을 제거하고, 스티어링휠의 조작에 따른 조향신호를 전기적 신호로 구동모터와 같은 액츄에이터에 전달하여 조향륜이 조작될 수 있도록 한 것으로서, 좌우 독립형 스티어바이와이어 장치는 좌우의 각 조향륜을 별도의 액츄에이터로 조작할 수 있도록 한 것이다.The steer-by-wire device removes the mechanical connection between the steering wheel and the steering wheel and transmits a steering signal according to the steering wheel's operation to an actuator such as a driving motor as an electrical signal so that the steering wheel can be operated. The stand-alone steer-by-wire device allows each steering wheel to be operated by a separate actuator.

종래의 스티어바이와이어 장치는 그 구조적 특성상, 상기 조향륜으로 입력되는 외력이 역으로 액츄에이터 쪽으로 쉽게 전달되어, 직진 주행시의 경우 운전자의 입력이 없음에도 직진 주행상태를 유지하기 위해 틀어진 제어상태를 보정하기 위한 액츄에이터의 동작이 발생하는 등, 직진 안정성이 다소 떨어지는 측면이 있으며, 이로 인한 액츄에이터의 제어성능에도 악영향이 발생할 수 있다.In the conventional steerby wire device, the external force inputted to the steering wheel is easily transmitted to the actuator due to its structural characteristics, so that in the case of the straight driving, the steered wire device is corrected to maintain the straight driving state without the driver's input. There is a side in which the straight stability is somewhat inferior, such as the operation of the actuator for the generation, and this may adversely affect the control performance of the actuator.

또한, 액츄에이터인 구동모터의 동력을 일정한 기어비의 피니언기어와 랙의 결합으로 전달함에 의해 구동모터가 감당해야 할 출력이 최대의 회전토크를 필요로 하는 상태에 맞추어져야 하므로, 구동모터의 용량이 비교적 커져야 하는데, 이는 차량의 중량 및 원가의 증가 요인이 된다. In addition, since the power of the drive motor, which is the actuator, is transmitted to the combination of the pinion gear and the rack with the constant gear ratio, the output of the drive motor must be adjusted to the state requiring the maximum rotation torque, so that the capacity of the drive motor is relatively It must be large, which increases the weight and cost of the vehicle.

본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 조향륜으로부터 입력되는 외란에 대한 강건성을 구비하여 차량의 직진 안정성이 보다 향상되고, 조작 응답성도 개선할 수 있으며, 작동 구간별로 작동 회전토크가 가변될 수 있도록 함으로써, 구동모터의 용량을 축소하여, 차량의 원가를 절감하고 중량을 저감할 수 있도록 한 독립형 스티어바이와이어 장치를 제공함에 그 목적이 있다.The present invention has been made in order to solve the problems as described above, having a robustness against disturbances input from the steering wheel to improve the linear stability of the vehicle more, can improve the operation responsiveness, operating rotation by operation section It is an object of the present invention to provide a stand-alone steer-by-wire device that can reduce the capacity of a driving motor, thereby reducing the cost and weight of a vehicle by allowing torque to be variable.

상기한 바와 같은 목적을 달성하기 위하여 안출된 본 발명 독립형 스티어바이와이어 장치는 The present invention stand-alone steerby wire device devised to achieve the object as described above

중앙의 온센터영역과 상기 온센터영역의 양쪽으로 위치한 오프센터영역이 일직선으로 배치되고, 상기 오프센터영역은 상기 온센터영역 쪽으로부터 가장자리 를 향해 점차 하향 경사지게 형성된 가변랙기어와;A variable rack gear having a center on center region and an off center region located at both sides of the on center region in a straight line, wherein the off center region is gradually inclined downward toward an edge from the on center region;

상기 가변랙기어의 온센터영역에 치합되는 온센터피니언과 상기 오프센터영역에 치합되는 오프센터피니언이 단일 회전축에 일체로 형성된 가변피니언기어와;A variable pinion gear having an on-center pinion engaged with the on-center area of the variable rack gear and an off-center pinion engaged with the off-center area integrally formed on a single rotation shaft;

상기 가변피니언기어를 회전시키도록 구비된 구동모터;A drive motor provided to rotate the variable pinion gear;

를 포함하여 구성된 것을 특징으로 한다.Characterized in that configured to include.

본 발명은 조향륜으로부터 입력되는 외란에 대한 강건성을 구비하여 차량의 직진 안정성이 보다 향상되고, 조작 응답성 및 제어 정밀도를 개선할 수 있으며, 작동 구간별로 작동 회전토크가 가변될 수 있도록 함으로써, 구동모터의 용량을 축소하여, 차량의 원가를 절감하고 중량을 저감할 수 있다.The present invention has a robustness against disturbances input from the steering wheel to improve the linear stability of the vehicle further, to improve the operation response and control accuracy, and to operate the drive torque by varying the operating torque for each operation section, By reducing the capacity of the motor, it is possible to reduce the cost of the vehicle and reduce the weight.

도 1 내지 도 4를 참조하면, 본 발명 실시예는 중앙의 온센터영역(1)과 상기 온센터영역의 양쪽으로 위치한 오프센터영역(3)이 일직선으로 배치되고, 상기 오프센터영역(3)은 상기 온센터영역(1) 쪽으로부터 가장자리를 향해 점차 하향 경사지게 형성된 가변랙기어(5)와; 상기 가변랙기어의 온센터영역(1)에 치합되는 온센터피니언(7)과 상기 오프센터영역(3)에 치합되는 오프센터피니언(9)이 단일 회전축에 일체로 형성된 가변피니언기어(11)와; 상기 가변피니언기어(11)를 회전시키도록 구비된 구동모터(13)를 포함하여 구성된다.1 to 4, in the embodiment of the present invention, the on-center area 1 in the center and the off-center area 3 located on both sides of the on-center area are arranged in a straight line, and the off-center area 3 A variable rack gear 5 formed to be gradually inclined downward toward the edge from the on-center area 1; Variable pinion gear 11 having an on-center pinion 7 engaged with the on-center area 1 of the variable rack gear and an off-center pinion 9 engaged with the off-center area 3 integrally formed on a single rotating shaft. Wow; It comprises a drive motor 13 provided to rotate the variable pinion gear (11).

즉, 좌우 양쪽의 조향륜(15)을 각각 제어하기 위하여, 상기 가변랙기어(5)와 가변피니언기어(11) 및 구동모터(13)로 이루어진 조향유닛이 차량의 좌우에 각각 구비되어, 각 조향륜(15)을 제어할 수 있도록 구성된 것이다.That is, in order to control the left and right steering wheels 15, respectively, a steering unit composed of the variable rack gear 5, the variable pinion gear 11, and the drive motor 13 is provided on the left and right sides of the vehicle, respectively. It is configured to control the steering wheel (15).

상기 가변랙기어(5)는 상기 가변피니언기어(11)의 회전축방향을 따라 상기 오프센터영역(3)의 양쪽으로 상기 온센터영역(1)이 구비되고, 상기 양쪽의 온센터영역(1)의 사이에는 공간부(17)가 구비되며, 상기 가변피니언기어(11)는 그 회전축방향을 따라 상기 오프센터피니언(9)의 양쪽에 상기 온센터피니언(7)이 일체로 구비된 구조이다.The variable rack gear 5 has the on-center area 1 on both sides of the off-center area 3 along the rotation axis direction of the variable pinion gear 11, and the on-center area 1 on both sides. Between the space portion 17 is provided, the variable pinion gear 11 has a structure in which the on-center pinion (7) is integrally provided on both sides of the off-center pinion (9) along the rotation axis direction.

따라서, 상기 가변랙기어(5)와 가변피니언기어(11)가 치합된 위치가 상기 가변랙기어(5)의 온센터영역(1)인 경우에는 상기 오프센터피니언(9)은 상기 공간부(17)에 삽입되어 상기 가변랙기어(5)와 간섭하지 않고, 상기 오프센터피니언(9)이 상기 오프센터영역(3)에 치합될 때에는 상기 온센터피니언(7)은 상기 가변랙기어(5)의 오프센터영역(3)에 형성된 기울기에 의해 간섭하지 않게 된다.Therefore, when the position where the variable rack gear 5 and the variable pinion gear 11 are engaged is the on-center area 1 of the variable rack gear 5, the off center pinion 9 is the space portion ( The on-center pinion 7 is inserted into the variable rack gear 5 when the off-center pinion 9 is engaged with the off-center area 3 without being interfered with the variable rack gear 5. It does not interfere with the inclination formed in the off-center area 3 of ().

물론, 상기 가변피니언기어(11)의 오프센터피니언(9)은 상기 가변랙기어(5)의 오프센터영역(3)에 치합되는 부분의 반경이 점차 길어지게 형성된 구조이다.Of course, the off center pinion 9 of the variable pinion gear 11 has a structure in which the radius of the portion engaged with the off center area 3 of the variable rack gear 5 is gradually increased.

따라서, 상기 가변피니언기어(11)와 상기 가변랙기어(5)는 그 치합 위치가 상기 가변랙기어(5)의 끝단부로 갈수록 상기 가변피니언기어(11)의 회전반경이 증가되어 그 회전토크가 증대되므로, 그 만큼 상기 구동모터(13)의 용량을 축소하여도 조향륜(15)의 조작에 필요로 하는 출력을 얻어낼 수 있게 된다.Therefore, as the engagement position of the variable pinion gear 11 and the variable rack gear 5 toward the end of the variable rack gear 5, the radius of rotation of the variable pinion gear 11 is increased so that its torque is increased. Since it is increased, the output required for the operation of the steering wheel 15 can be obtained even if the capacity of the drive motor 13 is reduced by that amount.

또한, 상기 가변랙기어(5)의 온센터영역(1)과 상기 가변피니언기어(11)의 온센터피니언(7) 사이에는 그 피치 간격을 상기 오프센터영역(3) 및 오프센터피니언(9)과 무관하게 줄여서, 그 조작 응답성 및 제어 정밀도를 향상시킬 수 있으며, 상기 온센터피니언(7)과 온센터영역(1)의 물림 마찰력을 상대적으로 높여서 외력에 대하여 보다 향상된 안정성을 제공하여 차량의 직진 주행성을 크게 향상시키도록 할 수 있다.In addition, the pitch interval between the on-center area 1 of the variable rack gear 5 and the on-center pinion 7 of the variable pinion gear 11 is set to the off-center area 3 and the off-center pinion 9. Irrespective of), the operation responsiveness and control accuracy can be improved, and the bite frictional force of the on-center pinion (7) and the on-center area (1) is relatively increased to provide improved stability to external forces. It is possible to greatly improve the straight running performance of.

도 1은 본 발명에 따른 독립형 스티어바이와이어 장치의 차량 장착 개념을 설명한 도면,1 is a view illustrating a vehicle mounting concept of a standalone steer-by-wire device according to the present invention;

도 2는 본 발명에 따른 독립형 스티어바이와이어 장치의 주요 구성을 도시한 도면,2 is a view showing the main configuration of a stand-alone steerby wire device according to the present invention;

도 3은 도 2의 가변랙기어의 구조를 설명한 도면, 3 is a view for explaining the structure of the variable rack gear of FIG.

도 4는 도 2의 가변피니언기어를 도시한 도면이다.4 is a view illustrating the variable pinion gear of FIG. 2.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1; 온센터영역 3; 오프센터영역One; On center region 3; Off center area

5; 가변랙기어 7; 온센터피니언5; Variable rack gear 7; On Center Pinion

9; 오프센터피니언 11; 가변피니언기어9; Off-center pinion 11; Adjustable Pinion Gear

13; 구동모터 15; 조향륜13; Drive motor 15; Steering wheel

Claims (3)

중앙의 온센터영역과 상기 온센터영역의 양쪽으로 위치한 오프센터영역이 일직선으로 배치되고, 상기 오프센터영역은 상기 온센터영역 쪽으로부터 가장자리를 향해 점차 하향 경사지게 형성된 가변랙기어와;A variable rack gear having a center on-center area and an off-center area located on both sides of the on-center area in a straight line, wherein the off-center area is gradually inclined downward toward the edge from the on-center area; 상기 가변랙기어의 온센터영역에 치합되는 온센터피니언과 상기 오프센터영역에 치합되는 오프센터피니언이 단일 회전축에 일체로 형성된 가변피니언기어와;A variable pinion gear having an on-center pinion engaged with the on-center area of the variable rack gear and an off-center pinion engaged with the off-center area integrally formed on a single rotation shaft; 상기 가변피니언기어를 회전시키도록 구비된 구동모터;A drive motor provided to rotate the variable pinion gear; 를 포함하여 구성된 것을 특징으로 하는 독립형 스티어바이와이어 장치.Stand-alone steer-by-wire device, characterized in that configured to include. 청구항 1에 있어서, The method according to claim 1, 상기 가변랙기어는 상기 가변피니언기어의 회전축방향을 따라 상기 오프센터영역의 양쪽으로 상기 온센터영역이 구비되고; 상기 양쪽의 온센터영역의 사이에는 공간부가 구비되며;The variable rack gear includes the on center area on both sides of the off center area along the rotation axis direction of the variable pinion gear; A space portion is provided between the two on-center regions; 상기 가변피니언기어는 그 회전축방향을 따라 상기 오프센터피니언의 양쪽에 상기 온센터피니언이 일체로 구비된 것The variable pinion gear is provided with the on-center pinion integrally on both sides of the off-center pinion along its rotation axis direction. 을 특징으로 하는 독립형 스티어바이와이어 장치.Stand-alone steer-by-wire device, characterized in that. 청구항 2에 있어서,The method according to claim 2, 상기 가변피니언기어의 오프센터피니언은 상기 가변랙기어의 오프센터영역 에 치합되는 부분의 반경이 점차 길어지게 형성된 것The off center pinion of the variable pinion gear is formed so that the radius of the portion engaged with the off center area of the variable rack gear is gradually increased. 을 특징으로 하는 독립형 스티어바이와이어 장치.Stand-alone steer-by-wire device, characterized in that.
KR1020090111820A 2009-11-19 2009-11-19 Independent type steer-by-wire apparatus KR20110054981A (en)

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KR1020090111820A KR20110054981A (en) 2009-11-19 2009-11-19 Independent type steer-by-wire apparatus

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KR1020090111820A KR20110054981A (en) 2009-11-19 2009-11-19 Independent type steer-by-wire apparatus

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115158444A (en) * 2022-07-01 2022-10-11 奇瑞商用车（安徽）有限公司 Wire-controlled steering structure and control method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115158444A (en) * 2022-07-01 2022-10-11 奇瑞商用车（安徽）有限公司 Wire-controlled steering structure and control method thereof
CN115158444B (en) * 2022-07-01 2024-02-23 奇瑞商用车（安徽）有限公司 Wire control steering structure and control method thereof

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