KR0176057B1 - Motor driven power steering system - Google Patents
Motor driven power steering system Download PDFInfo
- Publication number
- KR0176057B1 KR0176057B1 KR1019960034317A KR19960034317A KR0176057B1 KR 0176057 B1 KR0176057 B1 KR 0176057B1 KR 1019960034317 A KR1019960034317 A KR 1019960034317A KR 19960034317 A KR19960034317 A KR 19960034317A KR 0176057 B1 KR0176057 B1 KR 0176057B1
- Authority
- KR
- South Korea
- Prior art keywords
- steering
- motor
- reduction gear
- steering column
- vehicle
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/22—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system
- B62D7/224—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system acting between the steering wheel and the steering gear, e.g. on the steering column
Abstract
본 발명은 토오크를 전달하는 스티어링 컬럼과 감속기어 사이에 로타리 스프링댐퍼를 장착하여 모터와 감속기어에서 발생한 잔진동을 흡수하여 안정된 조향감을 주고자 차량의 모터구동식 파워 스티어링장치에 관한 것으로 조향핸들(1)이 일체로 조립되어 전륜의 방향을 조향하는 스티어링 컬럼(2)과,스티어링 컬럼(2)의 설정된 위치에 일체로 조립되어 잔진동을 흡수하여 조향핸들(1)에 전달되지 않도록 하는 로타리 스프링댐퍼(3)와,차체에 고정설치되어 차속에 따라 구동속도 및 회전각도가 제어받는 전기모터(4)와,전기모터(4)의 회전수를 감속하여 스티어링 컬럼(2)에 전달하는 감속기어(5)로 구성된 것임.The present invention relates to a motor-driven power steering apparatus of a vehicle to provide a stable steering by absorbing residual vibration generated from a motor and a reduction gear by mounting a rotary spring damper between a steering column and a reduction gear to transmit torque. ) Is integrally assembled to the steering column (2) to steer the direction of the front wheel and the rotary spring damper (1) is integrally assembled at the set position of the steering column (2) to absorb residual vibrations so that they are not transmitted to the steering wheel (1). 3) and an electric motor (4) fixed to the vehicle body to control the driving speed and the rotation angle according to the vehicle speed, and a reduction gear (5) which decelerates the rotation speed of the electric motor (4) and transmits it to the steering column (2). ).
Description
제1도는 본 발명의 요부를 발췌한 구성도1 is a block diagram of the main portion of the present invention
*도면중 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1 : 조향핸들 2 : 스티어링 컬럼1: steering wheel 2: steering column
3 : 로타리 스프링댐퍼 4 : 전기모터3: rotary spring damper 4: electric motor
5 : 감속기어5: reduction gear
본 발명은 토오크를 전달하는 스티어링 컬럼과 감속기어 사이에 로타리 스프링댐퍼를 장착하여 모터와 감속기어에서 발생한 잔진동을 흡수하여 안정된 조향감을 주고자 차량의 모터구동식 파워 스티어링장치에 관한 것이다.The present invention relates to a motor-driven power steering apparatus of a vehicle for mounting a rotary spring damper between a steering column that delivers torque and a reduction gear to absorb a residual vibration generated from a motor and a reduction gear to give a stable steering feeling.
일반적으로 차량의 파워스티어링장치는, 전륜의 조향시 저속주행시에는 가볍고 자연스럽게 큰 각도로 조향되도록 하고, 고속주행시에는 무겁고 자연스럽에 작은 각도로 회전되도록 하여 운전자의 피로감을 덜어주고 안전운전에 도움을 주도록 하기 위한 장치이다.In general, the vehicle's power steering device is designed to steer lightly and naturally at large angles at low speeds while steering the front wheels, and to rotate at a small angle at heavy and natural speeds at high speeds, thereby reducing driver fatigue and helping to drive safely. It is an apparatus for doing so.
그런데 이러한 파워 스티어링은 유압을 이용하는 것과 모터를 이용하는 것이 있는데, 모터를이용하는 MDPS(Motor Driven Power Steering)는 모터의 구동력에 의하여 작동하는 파워 스티어링을 말하며 모터에 의하여 스티어링장치를 직접 구동하므로 별도의 유압장치가 필요없는 장점을 가지고 있다.However, such power steering uses a hydraulic pressure and a motor, and MDPS (Motor Driven Power Steering) using a motor refers to a power steering operated by a driving force of a motor. Has the advantage of not needing.
이러한 MDPS는 모터에서 발생한 토오크로 감속기어를 거쳐서 스티어링 컬럼을 회동시키는 구조로 되어 있거나, 또는 스티어링 랙을 회전시켜 주는 구조로 되어 있는 것이 있다.Such a MDPS has a structure in which a steering column is rotated through a reduction gear with a torque generated from a motor, or a structure in which a steering rack is rotated.
따라서 운전자가 조향핸들을 돌리면 이때 발생한 힘을 토오크센서가 감지하여 모터를 베어하는 전자제어부에 신호를 보낸다. 그러면 전자에어부에 의하여 모터가 작동하게 되므로 모터에서 발생한 토오크는 감속기어를 거쳐서 스티어링 컬럼 또는 스티어링 랙에 전달되며,이로인해 운전자가 조향핸들을 돌리기 쉽도록 조향토오크를 발생시켜 주게 되는 것이다.Therefore, when the driver turns the steering wheel, the torque sensor senses the force generated at this time and sends a signal to the electronic control unit that bears the motor. Then, since the motor is operated by the electronic air unit, the torque generated from the motor is transmitted to the steering column or the steering rack via the reduction gear, thereby generating steering torque so that the driver can easily turn the steering wheel.
그런데 모터와 감속기어의 간극으로 인한 잔진동(Torpue Ripple)이 발생하는 단점이있어, 모터와감속기어에서 발생한 잔진동이 조향핸들에 직접 전달되어 운전자로 하여금 핸들감을 나쁘게 하거나 불안하게 하여 불안정한 운행을 하는 동시에 피로감을 가중시키는 문제점이 있었다.However, there is a disadvantage that Torque Ripple occurs due to the gap between the motor and the reduction gear, and the residual vibration generated from the motor and the reduction gear is transmitted directly to the steering wheel, which makes the driver feel uneasy or insecure and makes unstable driving. There was a problem that aggravated fatigue.
본 발명은 이러한 종래의 문제점을 해결하고자 하는 것으로 토오크를 전달하는 스티어링 컬럼과 감속기어 사이에 로타리 스프링댐퍼를 장착하여 모터와 감속기어에서 발생한 잔진동을 흡수하여 안정된 조향감을 주고자 차량의 모터구동식 파워 스티어링장치를 제공하는데 그 목적이 있다.The present invention is to solve this conventional problem by mounting a rotary spring damper between the steering column and the reduction gear to transmit torque to absorb the residual vibration generated from the motor and the reduction gear to give a stable steering feeling of the motor-driven power of the vehicle The object is to provide a steering device.
본 발명은 이러한 목적을 달성하기 위하여, 조향핸들이 일체로 조립되어 전륜의 방향을 조향하는 스티어링 컬럼과,스티어링 컬럼의 설정된 위치에 일체로 조립되어 잔진동을 흡수하여 조향핸드에 전달되지 않도록 하는 로터리 스프링댐퍼와,차체에 고정설치되어 차속에 따라구동속도 및 회전각도가 제어받는 전기모터와,전기모터의 회전수를 감축하여 스티어링 컬럼에 전딜하는 감속기어로 ,차량의 모터구동식 파워 스티어링장치를 구성한 것이 본 발명의 기본적인 특징이다.In order to achieve the above object, the present invention provides a steering column which is integrally assembled with a steering wheel to steer the direction of the front wheel, and a rotary spring which is integrally assembled at a predetermined position of the steering column to absorb residual vibrations so that they are not transmitted to the steering hand. It consists of a damper, an electric motor fixed to the vehicle body, and the driving speed and rotation angle are controlled according to the vehicle speed, and a reduction gear that reduces the number of revolutions of the electric motor and transmits it to the steering column. It is a basic feature of the present invention.
상기 감속기어는 ,로타리 스프링댐퍼의 외주년에 일체로 형성되어 회전수를 감속시키는 워엄훨과, 전기모터의 구동축에 일체로 조립되어 워엄훨에 구동력을 전달하는 워엄으로 구성한것이 본 발명의 부수적인 특징이다.The reduction gear is formed of a worm wheel that is integrally formed in the outer circumference of the rotary spring damper, and a worm wheel that is integrally assembled to the drive shaft of the electric motor to transfer the driving force to the worm wheel is an additional feature of the present invention. to be.
이하, 본 발명을 첨부 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도면 제1도는 본발명의 실시예로서, 조향핸들(1)이 일체로 조립되어 전륜의 방향을 조향하는 스티어링 컬럼(2)과,스티어링 컬럼(2)의 설정된 위치에 일체로 조립되어 잔진동을 흡수하여 조향핸들(1)에 전달되지 않도록 하는 로타리 스프링댐퍼(3)와 ,차체에 고정설치되어 차속에따라구동속도 및 회전각도가 제어받는 전기모터(4)와,전기모터(4)의 회전수를 감속하여 스티어링 컬럼(2)에 전달하는 감속기어(5)로 차량의 모터구동식 파워 스티어링장치를 수성한다.1 is an embodiment of the present invention, the steering wheel (1) is integrally assembled to steer the direction of the front wheel steering column (2), the steering column (2) is integrally assembled at the set position of the steering column (2) to absorb residual vibrations Rotary spring damper (3) to prevent transmission to the steering wheel (1) and the electric motor (4) and the rotational speed of the electric motor (4), which are fixed to the vehicle body and control the driving speed and rotation angle depending on the vehicle speed. The motor-driven power steering apparatus of the vehicle is made with the reduction gear 5 which decelerates and transmits the same to the steering column 2.
상기 감속기어(5)는, 로타리 스프링댐퍼(3)의 외주면에 일체로 형성되어 회전수를 감속시키는 워엄훨(5a)과 전기모터(4)의 구동축(4a)에 일체로 조립되어 워엄훨(5a)에 구동력을 전달하는 워엄(5b)으로 구성한다.The reduction gear 5 is integrally formed on the outer circumferential surface of the rotary spring damper 3 to be integrally assembled to the worm wheel 5a and the driving shaft 4a of the electric motor 4 to reduce the rotation speed. It consists of a worm 5b which transmits a driving force to 5a).
이와같이 구성된 본 발명은,차량의 주행속도에 대부분 구동되는 전기모터(4)에서 발생한 토오크는 감속기어 (5)를 거쳐 로타리 스프링댐퍼(3)에 전달되며,로타리 스프링댐퍼(3)에 전달된 토오크는 스티어링 컬럼(2)에 전달된다.The present invention configured as described above, the torque generated in the electric motor (4) that is mostly driven at the running speed of the vehicle is transmitted to the rotary spring damper (3) via the reduction gear (5), the torque transmitted to the rotary spring damper (3) Is transmitted to the steering column 2.
즉,상기 감속기어(5)는 조향핸들(1)의 조향시에 전기모터(4)의 구동축(4a)에 설치된 워엄(5b)의 토오크가 로타리 스프링댐펴(3)에 설치된 워엄훨(5a)에 전달되도록 하는 동시에 전기모터(4)의 회전수를 설정된 회전수 및 회전각도로 감속되게 작동하므로서 작은 힘으로 조향핸들이 원활하게 조향되도록 도와주는 것이다.That is, the reduction gear 5 has a worm wheel 5a having a torque of the worm 5b installed on the drive shaft 4a of the electric motor 4 when the steering wheel 1 is steered. At the same time it is transmitted to the electric motor (4) is to help the steering wheel to be smoothly steering with a small force by operating to reduce the rotation speed of the set speed and rotation angle.
이때,전기모터(4)의 구동시 발생되는 잔진동과 ,워엄(5b)과, 워엄훨(5a)의 맞물림회전시 발생되는 잔진동을 로타리 스프링댐퍼(3)에서 흡수하므로서 스티어링 컬럼(2)을 거쳐 조향핸들(1)에 잔진동이 전달되지 않도록 할 수가 있는 것이며, 이로 인하여 핸들감이 안정되어 운전자의 안정감과 편리함을 줄 수가 있는 것이다.At this time, the residual vibration generated when the electric motor 4 is driven and the worm 5b and the residual vibration generated when the worm wheel 5a is engaged with each other rotate through the steering column 2 by absorbing the rotary spring damper 3. It is possible to prevent the residual vibration is transmitted to the steering wheel (1), thereby the handle feeling is stabilized can give a sense of stability and convenience of the driver.
또한 본 발명의 장치를 전기자동체에 적용하게 되면 차량의 품질과 신뢰도를 더욱 항상시킬 수가 있는 것이다.In addition, if the device of the present invention is applied to an electric vehicle, the quality and reliability of the vehicle can be further improved.
이와 같이 본 발명은 토오크를 전달하는 스티어링 컬럼과감속기어 사이에 로타리 스프링댐퍼를 장착하여 모터와 감속기어에서 발생한 잔진동을 흡수하여 안정된 조향감을 줄 수 있고 효과가 있다.As described above, the present invention is equipped with a rotary spring damper between the steering column and the reduction gear for transmitting torque to absorb the residual vibration generated from the motor and the reduction gear, thereby providing a stable steering feeling.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019960034317A KR0176057B1 (en) | 1996-08-20 | 1996-08-20 | Motor driven power steering system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019960034317A KR0176057B1 (en) | 1996-08-20 | 1996-08-20 | Motor driven power steering system |
Publications (2)
Publication Number | Publication Date |
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KR19980015091A KR19980015091A (en) | 1998-05-25 |
KR0176057B1 true KR0176057B1 (en) | 1999-03-20 |
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KR1019960034317A KR0176057B1 (en) | 1996-08-20 | 1996-08-20 | Motor driven power steering system |
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KR (1) | KR0176057B1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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KR100468493B1 (en) * | 2000-11-24 | 2005-01-27 | 주식회사 만도 | Method for operating electric power steering system of automobile |
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1996
- 1996-08-20 KR KR1019960034317A patent/KR0176057B1/en not_active IP Right Cessation
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