KR20120031390A - In wheel driven system - Google Patents

In wheel driven system Download PDF

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Publication number
KR20120031390A
KR20120031390A KR1020100092905A KR20100092905A KR20120031390A KR 20120031390 A KR20120031390 A KR 20120031390A KR 1020100092905 A KR1020100092905 A KR 1020100092905A KR 20100092905 A KR20100092905 A KR 20100092905A KR 20120031390 A KR20120031390 A KR 20120031390A
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South Korea
Prior art keywords
wheel
motor
carrier
reducer
drive system
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KR1020100092905A
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Korean (ko)
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KR101682248B1 (en
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신경호
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현대모비스 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

PURPOSE: An in-wheel drive system is provided to improve fuel efficiency by forming a wheel disk in a reducer which increases the torque of a motor. CONSTITUTION: An in-wheel drive system comprises a motor drive gear(6), a carrier(8), and a reducer(7). The motor drive gear is directly coupled to the motor shaft(5a) of a motor(5). An internal gear(9) meshed with the motor drive gear is formed on the inner surface of the carrier. The carrier is fixed to the hub(4) of a wheel. The reducer is formed in the carrier and is meshed with the motor drive gear. The reducer is composed of a wheel disk(10) and a sun gear(11).

Description

인휠 구동시스템{In Wheel Driven System} In Wheel Driven System

본 발명은 전기자동차에 적용되는 인휠 구동시스템에 관한 것으로, 특히 캘리퍼를 적용하면서도 휠사이즈를 줄여 소형차량에서도 적용될 수 있는 인휠 구동시스템에 관한 것이다.The present invention relates to an in-wheel drive system applied to an electric vehicle, and more particularly to an in-wheel drive system that can be applied to a small vehicle by reducing the wheel size while applying a caliper.

일반적으로 인휠 구동시스템은 휠의 안쪽에서 제동장치와 함께 장착되어진 모터와 감속기를 구비한다.In-wheel drive systems generally have a motor and a reducer mounted with a brake on the inside of the wheel.

상기 인휠 구동시스템은 구동축과 휠축이 불일치하는 감속기타입과 구동축과 휠축이 일치하는 축형 감속기타입으로 구별되며, 상기 구동축과 휠축이 일치하는 축형 감속기타입은 모터와 감속기 및 허브가 동일축상으로 나란히 배열되는 구조가 적용된다.The in-wheel drive system is divided into a reduction gear type in which a drive shaft and a wheel shaft are inconsistent and an axial gear reducer type in which a driving shaft and a wheel shaft coincide with each other. The structure is applied.

그리고, 상기 인휠 구동시스템 중 구동축과 휠축이 일치하는 축형 감속기타입은 드럼브레이크와 함께 적용되는 유성감속기타입과, 캘리퍼와 함께 적용되는 감속기 미적용타입으로 구분된다.In the in-wheel drive system, a shaft type reducer type in which the drive shaft and the wheel shaft coincide is divided into a planetary reducer type applied with a drum brake and a non-reduction type applied with a caliper.

상기 유성감속기타입은 토크증대를 위해 유성기어가 사용되므로 캘리퍼가 들어갈 공간이 없어 드럼브레이크에 적용되고, 감속기 미적용타입은 모터반경을 크게하여 감속기없이 토크증대를 하므로 캘리퍼의 장착 공간을 확보할 수 있지만 휠사이즈가 커지게 된다.The planetary reducer type uses planetary gears for torque increase, so there is no space for a caliper to be applied to the drum brake, and the non-reduction type can increase the motor radius without increasing the torque to secure the caliper mounting space. The wheel size becomes larger.

그리고, 상기 인휠 구동시스템중 구동축과 휠축이 불일치하는 감속기타입은 토크증대용 감속기어의 적용으로 구동축과 휠축이 서로 불일치되지만 캘리퍼의 장착 공간을 확보할 수 있게 된다.In the in-wheel drive system, the drive shaft and the wheel shaft are inconsistent with each other, but the drive shaft and the wheel shaft are inconsistent with each other by the application of torque increasing gears, but the mounting space of the caliper can be secured.

하지만, 감속기어는 토크증대를 위한 감속비가 확보되어야 하며, 감속비가 확보되기 위해서는 휠의 사이즈가 커져야 하고, 휠의 사이즈가 커지면 작은 사이즈의 휠을 사용하는 소형차량에선 인휠 구동시스템의 적용성이 크게 낮아질 수밖에 없게 된다.
However, the reduction gear should have a reduction ratio for torque increase, and the wheel size should be large to secure the reduction ratio. If the wheel size increases, the applicability of the in-wheel drive system will be greatly reduced in the small vehicles using small wheels. There is no choice but to.

이에 상기와 같은 점을 감안하여 발명된 본 발명은 감속기가 모터의 회전을 전달하는 기어를 내접시키고 휠디스크를 함께 형성해 캘리퍼를 적용함으로써, 감속기의 토크증대 작용을 유지하고 캘리퍼를 장착하면서도 휠 사이즈는 작게 형성해 소형차량에서도 적용할 수 있는 인휠 구동시스템을 제공하는데 목적이 있다.
Accordingly, the present invention in view of the above point is to reduce the torque of the reducer by mounting the caliper while the caliper is mounted by applying a caliper by integrating the gear to transmit the rotation of the motor and forming a wheel disc together. Its purpose is to provide an in-wheel drive system that is small and can be applied to small vehicles.

상기와 같은 목적을 달성하기 위한 본 발명은 휠축과 모터의 구동축이 서로 일치하지 않는 감속기타입 인휠 구동시스템에 있어서,The present invention for achieving the above object is in the reducer type in-wheel drive system in which the wheel shaft and the drive shaft of the motor does not match each other,

상기 모터의 모터축에 직접결합된 모터구동기어와, 상기 모터구동기어에 맞물리는 인터널기어가 내면으로 형성되고 휠의 허브에 고정되어진 캐리어와, 상기 캐리어에 구비되어 캘리퍼의 패드의 사이로 위치되는 휠디스크로 이루어진 감속기가 포함된 것을 특징으로 한다.A motor driving gear directly coupled to the motor shaft of the motor, an internal gear meshing with the motor driving gear is formed between the carrier formed on the inner surface and fixed to the hub of the wheel, and positioned between the pad of the caliper provided on the carrier; It characterized in that the reduction gear made of a wheel disk is included.

상기 감속기에는 상기 모터구동기어에 맞물리고 상기 허브를 축으로 자전하는 선기어가 더 포함되어진 것을 특징으로 한다. The reducer further includes a sun gear meshing with the motor driving gear and rotating the hub to the shaft.

상기 선기어에는 상기 허브와 결합되어진 베어링을 더 구비되고, 상기 휠디스크는 상기 캐리어와 스플라인을 매개로 결합되어진다.
The sun gear is further provided with a bearing coupled to the hub, and the wheel disk is coupled via the carrier and the spline.

이러한 본 발명은 모터의 토크를 증대하는 감속기에 휠 디스크가 함께 형성되어캘리퍼를 이용하므로 드럼브레이크 대비 제동성능이 향상되고 회생제동에 의한 연비 향상에도 유리한 효과를 갖게 된다.In the present invention, since the wheel disc is formed together with the reducer that increases the torque of the motor, the caliper is used, and thus the braking performance is improved compared to the drum brake, and the fuel efficiency is improved by regenerative braking.

또한, 본 발명은 감속기가 기어를 컴팩트하게 구성하고 휠 디스크를 일체화시킨 소형화로 소형차량에 대한 적용성이 높고 적은 차량 하드포인트 변화로 차량의 동적 성능을 향상하고, 차량의 디자인 자유도 향상과 A/S성을 향상은 물론 부품수량 감소로 공정수와 중량의 감소에 따른 원가도 절감되는 효과가 있게 된다.
In addition, the present invention is a compact gear reducer and integrated wheel disc, high applicability to small vehicles, small vehicle hard point changes to improve the dynamic performance of the vehicle, improve the design freedom of the vehicle and A In addition to improving / S performance, the cost of reducing the number of processes and weight is reduced by reducing the number of parts.

도 1은 본 발명에 따른 인휠 구동시스템의 구성도이고, 도 2는 본 발명에 따른 감속기의 감속비 관계도이다.1 is a configuration diagram of an in-wheel drive system according to the present invention, Figure 2 is a reduction ratio relationship of the reducer according to the present invention.

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.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the exemplary embodiments of the present invention may be embodied in various different forms, one of ordinary skill in the art to which the present invention pertains may be described herein. It is not limited to the Example to make.

도 1은 본 발명에 따른 인휠 구동시스템의 구성도를 나타낸다.1 shows a configuration of an in-wheel drive system according to the present invention.

도시된 바와 같이, 상기 인휠 구동시스템은 트레일링암(1)이 체결되는 허브(4)가 형성하는 휠축(Kb)을 벗어남 위치에 구동축(Ka)을 형성하는 모터(5)와, 상기 허브(4)에 결합되어 상기 모터(5)의 모터축(Ka)을 수용하고 패드(3)를 갖춘 캘리퍼(2)가 결합되는 감속기(7)로 구성된다.As shown, the in-wheel drive system includes a motor 5 forming a drive shaft Ka at a position outside the wheel shaft Kb formed by the hub 4 to which the trailing arm 1 is fastened, and the hub 4. It is composed of a reducer (7) which is coupled to a) and receives a motor shaft (Ka) of the motor (5) and to which a caliper (2) with a pad (3) is coupled.

본 실시예는 상기와 같이 휠의 허브(4)가 형성한 휠축(Kb)과 모터(5)의 모터축이 형성하는 구동축(Ka)이 서로 일치하지 않는 감속기타입 인휠 구동시스템이다.This embodiment is a reduction gear type in-wheel drive system in which the wheel shaft Kb formed by the hub 4 of the wheel and the drive shaft Ka formed by the motor shaft of the motor 5 do not coincide with each other as described above.

상기 감속기(7)는 모터(5)의 모터축(5a)에 직접결합된 모터구동기어(6)와, 상기 모터구동기어(6)에 맞물리는 인터널기어(9)가 내면으로 형성되고 휠의 허브(4)에 고정되어진 캐리어(8)와, 상기 모터구동기어(6)에 맞물리고 상기 허브(4)를 축으로 자전하는 선기어(11)로 구성된다. The speed reducer 7 includes a motor driving gear 6 directly coupled to the motor shaft 5a of the motor 5, and an internal gear 9 meshing with the motor driving gear 6. It consists of a carrier 8 fixed to the hub 4, and a sun gear 11 that meshes with the motor driving gear 6 and rotates the hub 4 in an axis.

이에 더해, 상기 캐리어(8)에는 캘리퍼(2)의 패드(3)에 의해 제동되는 휠디스크(10)가 구비되어진다.In addition, the carrier 8 is provided with a wheel disc 10 braked by the pad 3 of the caliper 2.

상기 휠디스크(10)는 캐리어(8)에 일체로 형성될 수 있지만, 본 실시예에선 상기 휠디스크(10)와 캐리어(8)의 조립과 분리가 용이하도록 휠디스크(10)와 캐리어(8)에 각각 스플라인을 형성한 조립구조가 적용된다.The wheel disk 10 may be integrally formed on the carrier 8, but in the present embodiment, the wheel disk 10 and the carrier 8 may be easily assembled and separated from the wheel disk 10 and the carrier 8. The assembly structure with splines respectively formed in) is applied.

이에 따라 상기 캐리어(8)는 속이 빈 드럼타입이면서 휠디스크(10)를 더 형성함으로써 전체적으로 모자형상을 이루게 된다.Accordingly, the carrier 8 is a hollow drum type and further forms a wheel disk 10 to form a hat shape as a whole.

상기 선기어(11)는 허브(4)와 결합되어진 베어링(20)을 갖추고, 차량의 주행에 따른 외부충격으로부터 감속기(7)를 지지하는 기능을 구현하게 된다.The sun gear 11 has a bearing 20 coupled to the hub 4 to implement a function of supporting the reducer 7 from an external shock caused by the driving of the vehicle.

상기와 같이 인휠 구동시스템의 감속기(7)가 모터(5)를 통해 직접회전되는 모터구동기어(6)와 맞물리는 인터널기어(9)를 형성한 캐리어(8)로 이루어지고, 상기 캐리어(8)에 휠디스크(10)가 함께 형성됨으로써, 드럼브레이크 대비 향상된 제동성능으로 회생제동에 의한 연비 향상에도 유리한 캘리퍼를 이용하면서도 작은 휠 사이즈로 소형차량에서도 용이하게 장착될 수 있게 된다.As described above, the reduction gear 7 of the in-wheel drive system is formed of a carrier 8 that forms an internal gear 9 that meshes with a motor driving gear 6 that is directly rotated through the motor 5, and the carrier ( 8) The wheel disk 10 is formed together, it is possible to be easily mounted in a small vehicle with a small wheel size while using a caliper which is advantageous to improve fuel efficiency by regenerative braking with improved braking performance compared to a drum brake.

본 실시예에 따른 인휠 구동시스템은 모터(5)의 회전으로 상기 모터(5)의 모터축(5a)에 고정된 모터구동기어(6)가 회전되면, 상기 모터구동기어(6)를 내접한 인터널기어(9)를 매개로 캐리어(8)가 회전됨으로써 휠을 구동시키게 된다.In the in-wheel drive system according to the present embodiment, when the motor drive gear 6 fixed to the motor shaft (5a) of the motor 5 is rotated by the rotation of the motor (5), the inward drive of the motor drive gear (6) The carrier 8 is rotated through the internal gear 9 to drive the wheel.

도 2는 본 실시예에 따른 감속기(7)의 감속비 관계도로서, 도시된 바와 같이 상기 감속기(7)의 감속비는 모터구동기어(6)와 인터널기어(9)가 내면으로 형성된 캐리어(8)를 통해 이루어진다.2 is a relationship between the reduction gear ratio of the reduction gear 7 according to the present embodiment. As shown in FIG. 2, the reduction gear ratio of the reduction gear 7 includes a carrier 8 in which the motor driving gear 6 and the internal gear 9 are formed on the inner surface. Through).

그러므로, 상기 감속기(7)의 토크증대는 모터구동기어(6)의 반경(r)과 캐리어(8)의 반경(R)이 갖는 r/R로 산출되는 감속비로 결정되고, 이는 감속기(7)가 적용되는 차량의 사양에 따라 설계된다.Therefore, the torque increase of the reduction gear 7 is determined by the reduction ratio calculated by r / R of the radius r of the motor drive gear 6 and the radius R of the carrier 8, which is the reduction gear 7. It is designed according to the specifications of the vehicle to which it applies.

한편, 차량의 주행시 휠을 통해 감속기(7)쪽으로 전달되는 외부충격력은 허브(4)쪽에서 모터(5)의 모터하우징을 통해 트레일링암(1)으로 전달되어 분산되고 특히, 본 실시예에선 허브(4)에 결합되고 모터구동기어(6)에 맞물려 자전되는 선기어(11)가 구비됨으로써, 상기 선기어(11)가 감속기(7)를 외부충격으로부터 보호 및 지지하는 작용을 구현할 수 있게 된다.
On the other hand, the external impact force transmitted to the speed reducer 7 through the wheel while driving the vehicle is transmitted to the trailing arm 1 through the motor housing of the motor 5 from the hub 4 to be distributed and, in particular, the hub ( The sun gear 11 coupled to the motor 4 and engaged with the motor driving gear 6 is rotated, thereby enabling the sun gear 11 to protect and support the reducer 7 from external shock.

1 : 트레일링암 2 : 캘리퍼
3 : 패드 4 : 허브
5 : 모터 5a : 모터축
6 : 모터구동기어 7 : 감속기
8 : 캐리어 9 : 인터널기어
10 : 휠디스크 11 : 선기어
20 : 베어링1: trailing arm 2: caliper
3: pad 4: hub
5: motor 5a: motor shaft
6: motor drive gear 7: reducer
8: carrier 9: internal gear
10: wheel disc 11: sun gear
20: bearing

Claims (5)

휠축과 모터의 구동축이 서로 일치하지 않는 감속기타입 인휠 구동시스템에 있어서,
상기 모터의 모터축에 직접결합된 모터구동기어와, 상기 모터구동기어에 맞물리는 인터널기어가 내면으로 형성되고 휠의 허브에 고정되어진 캐리어와, 상기 캐리어에 구비되어 캘리퍼의 패드의 사이로 위치되는 휠디스크로 이루어진 감속기가 포함된 것을 특징으로 하는 인휠 구동시스템.
In the reducer type in-wheel drive system in which the wheel shaft and the drive shaft of the motor do not coincide with each other,
A motor driving gear directly coupled to the motor shaft of the motor, an internal gear meshing with the motor driving gear is formed between the carrier formed on the inner surface and fixed to the hub of the wheel, and positioned between the pad of the caliper provided on the carrier; In-wheel drive system characterized in that it comprises a reducer made of a wheel disk.
청구항 1에 있어서, 상기 감속기에는 상기 모터구동기어에 맞물리고 상기 허브를 축으로 자전하는 선기어가 더 포함되어진 것을 특징으로 하는 인휠 구동시스템.
The in-wheel drive system according to claim 1, wherein the reducer further includes a sun gear meshing with the motor driving gear and rotating the hub about the shaft.
청구항 2에 있어서, 상기 선기어에는 상기 허브와 결합되어진 베어링을 더 구비한 것을 특징으로 하는 인휠 구동시스템.
The in-wheel drive system according to claim 2, wherein the sun gear further comprises a bearing coupled to the hub.
청구항 1에 있어서, 상기 휠디스크는 상기 캐리어에 결합되어 상기 캘리퍼의 패드의 사이로 위치되는 것을 특징으로 하는 인휠 구동시스템.
The in-wheel drive system according to claim 1, wherein the wheel disc is coupled to the carrier and positioned between pads of the caliper.
청구항 4에 있어서, 상기 휠디스크는 상기 캐리어와 스플라인을 매개로 결합되는 것을 특징으로 하는 인휠 구동시스템.
The in-wheel drive system according to claim 4, wherein the wheel disk is coupled to the carrier and the spline.
KR1020100092905A 2010-09-24 2010-09-24 In Wheel Driven System KR101682248B1 (en)

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CN114407645A (en) * 2022-01-03 2022-04-29 南昌智能新能源汽车研究院 Wheel-side speed reduction driving system adopting idle wheel transmission

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KR20220118696A (en) 2021-02-19 2022-08-26 주식회사 만도 In wheel motor
KR102576319B1 (en) 2021-08-17 2023-09-12 현대모비스 주식회사 Disk brake apparatus of in wheel driven system

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JP2010025158A (en) * 2008-07-15 2010-02-04 Toyota Motor Corp Vehicle drive device

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