JP2007190970A - In-wheel motor system - Google Patents

In-wheel motor system Download PDF

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Publication number
JP2007190970A
JP2007190970A JP2006009133A JP2006009133A JP2007190970A JP 2007190970 A JP2007190970 A JP 2007190970A JP 2006009133 A JP2006009133 A JP 2006009133A JP 2006009133 A JP2006009133 A JP 2006009133A JP 2007190970 A JP2007190970 A JP 2007190970A
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Prior art keywords
motor
wheel
knuckle
dynamic vibration
vibration absorber
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JP2006009133A
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Japanese (ja)
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Haruo Iwano
治雄 岩野
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Bridgestone Corp
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Bridgestone Corp
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Priority to JP2006009133A priority Critical patent/JP2007190970A/en
Priority to PCT/JP2007/050557 priority patent/WO2007083645A1/en
Publication of JP2007190970A publication Critical patent/JP2007190970A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/144—Independent suspensions with lateral arms with two lateral arms forming a parallelogram
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/12—Wound spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/18—Mounting of vehicle engines
    • B60G2204/182—Electric motor on wheel support
    • 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
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • 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
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
    • 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
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
    • 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
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/50—Structural details of electrical machines
    • 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
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/145—Structure borne vibrations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Retarders (AREA)
  • Vibration Prevention Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an in-wheel motor system, securing a large stroke width even when an inner rotor type motor is used, stably operated taking the mass of a motor as the mass of a dynamic damper, and reducing the weight. <P>SOLUTION: In mounting an in-wheel motor on the vehicle unsprung part in a floating manner, a dynamic vibration absorber 20 including a motor mounting member 21 fitted to the side surface of a motor case 10a of an electric motor 10, a knuckle fitting member 22 fitted to a knuckle 5, a spring member 23 connecting the motor mounting member 21 and the knuckle fitting member 22, two guide members 24, 24 for guiding the operating direction of the spring member 23, and a damper 25 disposed parallel to the guide members 24, 24 is disposed on the side surface of the electric motor 10, and the electric motor 10 and the knuckle 5 are connected to each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、インホイールモータを、動的吸振装置を介して車輌バネ下部材に取り付け、上記モータの質量を動的吸振装置の質量として使用する構成のインホイールモータシステムに関するものである。   The present invention relates to an in-wheel motor system configured to attach an in-wheel motor to a vehicle unsprung member via a dynamic vibration absorber and use the mass of the motor as the mass of the dynamic vibration absorber.

近年、電気自動車などのモータによって駆動される車輌においては、モータを車輪に内蔵するインホイールモータシステムが採用されつつある。その中でも、図７に示すような、中空形状のインホイールモータ５０を、動的吸振装置６０を介して、車輌の足回り部品に対して弾性支持して、上記モータ５０の質量をダイナミックダンパーの質量として作用させるように構成した、乗り心地性とロードホールディング性に優れたインホイールモータシステムが注目されている（例えば、特許文献１，２参照）。
このインホイールモータシステムは、詳細には、径方向内側が開放された、モータロータ５１が取付けられた回転側ケース５２と、この回転側ケース５２と同心円状に配置され、上記モータロータ５１と所定の間隔を隔ててモータステータ５３が取付けられた、径方向外側が開放された非回転側ケース５４とを軸受け５５を介して回転可能に連結した中空形状のインホイールモータ５０の上記非回転側ケース５４を、直動ガイド６１Ａとバネ部材６１Ｂとダンパー６４とを備えた動的吸振装置６０を介して、車軸７１に結合される車輌の足回り部品であるナックル７２に連結し、上記回転側ケース５２とホイール７３とを、ホイール７３のラジアル方向に互いに偏心可能な駆動力伝達機構であるフレキシブルカップリング８０により結合したものである。
上記動的吸振装置６０は、詳細には、図８に示すように、モータ５０の非回転側ケース５４に取付けられるモータ側プレート６２とナックル７２に連結されるナックル側プレート６３とを、直動ガイド６１Ａとバネ部材６１Ｂとを一体に構成したバネ付き直動ガイド６１、及び、シリンダ６４ａと図示しないピストンとこのピストンに連結されたシャフト６４ｂとから成るダンパー６４とにより連結したもので、具体的には、ナックル側プレート６３に固定部材６３ｍ，６３ｎを設けて上記バネ付き直動ガイド６１の固定部であるリニアベアリング６１ａとダンパー６４の固定部であるシリンダ６４ａとを固定し、モータ側プレート６２に固定部材６２ｎ，６２ｎを設けて上記バネ付き直動ガイド６１の可動部であるロッド６１ｂの先端部とダンパー６４の可動部であるシャフト６４ｂの先端部を固定する構成となっている。
なお、図７において、７４は上記ホイールに装着されるタイヤ、７５はホイール７３とその回転軸において連結されたハブ、７６はショックアブゾーバ等から成るサスペンション部材、７７は上記ハブ７５に装着されたブレーキディスクである。 In recent years, an in-wheel motor system in which a motor is built in a wheel is being adopted in a vehicle driven by a motor such as an electric vehicle. Among these, a hollow in-wheel motor 50 as shown in FIG. 7 is elastically supported to the undercarriage parts of the vehicle via the dynamic vibration absorber 60, and the mass of the motor 50 is reduced by the dynamic damper. An in-wheel motor system that is configured to act as a mass and excellent in ride comfort and road holding property has attracted attention (see, for example, Patent Documents 1 and 2).
More specifically, the in-wheel motor system includes a rotation-side case 52 to which a motor rotor 51 is attached, the radially inner side being opened, and a concentric arrangement with the rotation-side case 52, and a predetermined distance from the motor rotor 51. The non-rotating side case 54 of the hollow in-wheel motor 50 that is rotatably connected via a bearing 55 to a non-rotating side case 54 having a motor stator 53 attached thereto and having a radially outer side opened. The rotary case 52 is connected to a knuckle 72 which is an undercarriage part of a vehicle coupled to an axle 71 through a dynamic vibration absorber 60 including a linear guide 61A, a spring member 61B, and a damper 64. The wheel 73 is coupled to the wheel 73 by a flexible coupling 80 that is a driving force transmission mechanism that can be eccentric to each other in the radial direction of the wheel 73. Than is.
Specifically, the dynamic vibration absorber 60 linearly moves a motor side plate 62 attached to the non-rotating side case 54 of the motor 50 and a knuckle side plate 63 connected to the knuckle 72, as shown in FIG. The guide 61A and the spring member 61B are integrally constituted by a spring-equipped linear motion guide 61, and a damper 64 comprising a cylinder 64a, a piston (not shown), and a shaft 64b connected to the piston. The knuckle side plate 63 is provided with fixing members 63m and 63n to fix the linear bearing 61a, which is the fixing portion of the spring direct acting guide 61, and the cylinder 64a, which is the fixing portion of the damper 64, to the motor side plate 62. Fixed members 62n, 62n are provided on the tip of the rod 61b, which is the movable part of the linear guide 61 with spring, Has a structure for fixing the front end portion of the shaft 64b is a movable part of the bumpers 64.
In FIG. 7, 74 is a tire attached to the wheel, 75 is a hub connected to the wheel 73 and its rotating shaft, 76 is a suspension member such as a shock absorber, and 77 is attached to the hub 75. Brake disc.

一方、インホイールモータとしてインナーロータ型の電気モータを使用した例としては、図９に示すような、電気モータ９１と減速歯車機構９２とを組合わせたギヤドモータ９０のケース９３を、その上部側と下部側とから、ゴムの中に油を封入したダンパー９４ａ，９４ｂで挟み込んで、これを車輌バネ下部品であるナックル９５に連結するとともに、このダンパー９４ａ，９４ｂを、更に、上記ナックル９５と上，下のアーム９６ａ，９６ｂとを連結するボールジョイント９７ａ，９７ｂに連結して、上記ギヤドモータ９０を車輌バネ下部にフローティングマウントする構成のものが提案されている（例えば、特許文献３参照）。
特開２００５−１７８６８４号公報 特開２００５−３２９９１１号公報 特開２００５−１２６０３７号公報 On the other hand, as an example of using an inner rotor type electric motor as an in-wheel motor, a case 93 of a geared motor 90 in which an electric motor 91 and a reduction gear mechanism 92 are combined as shown in FIG. From the lower side, it is sandwiched by dampers 94a and 94b in which oil is sealed in rubber, and is connected to a knuckle 95 which is a vehicle unsprung part. The dampers 94a and 94b are further connected to the knuckle 95 and the A structure is proposed in which the geared motor 90 is floating mounted below the vehicle spring by connecting to ball joints 97a and 97b that connect the lower arms 96a and 96b (see, for example, Patent Document 3).
JP 2005-178684 A JP 2005-329911 A JP 2005-126037 A

しかしながら、上記中空形状のインホイールモータ５０では、モータ５０の内側に動的吸振装置６０を組込む必要があるため、取付作業が煩雑になるだけでなく、直動ガイド６１などの動的吸振装置６０の部品交換時には、インホイールモータ５０の着脱を伴うことから、配線の結線等の作業も必要であった。
一方、上記インナーロータ型のモータを使用した例のように、モータあるいはギヤドモータを車輌バネ下部にフローティングマウントするための緩衝機構として、上記ダンパー９４ａ，９４ｂのような弾性体を用いた場合には、上述した動的吸振装置６０に用いられているバネ付き直動ガイド６１のような、バネ部材とガイド部材とを備えた緩衝機構を用いた場合に比較して安定性に欠けるだけでなく、上記動的吸振装置６０と同様に、モータを上，下から支持する構成のため、組立作業も煩雑であった。
更に、上記のような、モータを上，下から挟み込むような構成では、上記ギヤドモータ９０を大きく挟み込むためのアーム類が必要となり、軽量でなくなるだけでなく、レイアウト性にも問題が出てくる。また、地上高の問題も発生することから、ストローク幅を大きくとることが困難であるといった問題点がある。 However, in the hollow in-wheel motor 50, since it is necessary to incorporate the dynamic vibration absorber 60 inside the motor 50, not only the installation work becomes complicated, but also the dynamic vibration absorber 60 such as the linear motion guide 61. Since the in-wheel motor 50 is attached and detached when the parts are replaced, work such as wiring is also required.
On the other hand, when an elastic body such as the dampers 94a and 94b is used as a buffer mechanism for floating mounting the motor or geared motor below the vehicle spring, as in the example using the inner rotor type motor, In addition to lack of stability as compared with the case of using a buffer mechanism including a spring member and a guide member, such as the linear guide 61 with a spring used in the dynamic vibration absorber 60 described above, Similar to the dynamic vibration absorber 60, the assembly work is complicated because the motor is supported from above and below.
Further, in the configuration in which the motor is sandwiched from above and below as described above, an arm or the like for largely sandwiching the geared motor 90 is required, which is not only light weight but also has a problem in layout. In addition, there is a problem in that it is difficult to increase the stroke width because of the problem of ground clearance.

本発明は、従来の問題点に鑑みてなされたもので、インナーロータ型のモータを用いた場合でも、ストローク幅を大きくとることのでき、かつ、モータの質量をダイナミックダンパーの質量として安定して動作させることができるとともに、軽量化が可能なインホイールモータシステムを提供することを目的とする。   The present invention has been made in view of the conventional problems, and even when an inner rotor type motor is used, the stroke width can be increased, and the mass of the motor can be stably used as the mass of the dynamic damper. It is an object to provide an in-wheel motor system that can be operated and can be reduced in weight.

本願の請求項１に記載の発明は、車輪を駆動するモータを、動的吸振装置を介して車輌バネ下部材に取り付け、上記モータの質量を動的吸振装置の質量として使用する構成のインホイールモータシステムにおいて、上記動的吸振装置を上記モータの側面側に配置したことを特徴とするものである。
請求項２に記載の発明は、電気モータとこのモータの出力軸に連結され上記モータの回転を減速してホイールに伝達する減速歯車機構とを備えたギヤドモータを、動的吸振装置を介して車輌バネ下部に取り付け、上記ギヤドモータの質量を動的吸振装置の質量として使用する構成のインホイールモータシステムにおいて、上記動的吸振装置を、モータの側面側、または、上記モータと上記減速歯車の側面側に配置したものである。
請求項３に記載の発明は、請求項１または請求項２に記載のインホイールモータシステムにおいて、上記動的吸振装置を、上記モータのステータ側を支持するモータケースの側面側に取付けられるモータ取付部材と、車輪部に連結されるナックルに取付けられるナックル取付部材と、上記モータ取付部材と上記ナックル取付部材とを連結するバネ部材、ダンパー、及び、上記バネ部材とダンパーとの作動方向を案内するガイド部材とから構成したものである。 The invention according to claim 1 of the present application is an in-wheel having a configuration in which a motor for driving a wheel is attached to a vehicle unsprung member via a dynamic vibration absorber, and the mass of the motor is used as the mass of the dynamic vibration absorber. In the motor system, the dynamic vibration absorber is arranged on a side surface of the motor.
According to a second aspect of the present invention, a geared motor including an electric motor and a reduction gear mechanism that is connected to an output shaft of the motor and decelerates the rotation of the motor and transmits it to a wheel is provided via a dynamic vibration absorber. In an in-wheel motor system that is attached to the lower part of the spring and uses the mass of the geared motor as the mass of the dynamic vibration absorber, the dynamic vibration absorber is arranged on the side surface of the motor or on the side surface of the motor and the reduction gear. It is arranged in.
A third aspect of the present invention is the in-wheel motor system according to the first or second aspect, wherein the dynamic vibration absorber is mounted on a side surface of a motor case that supports the stator side of the motor. A member, a knuckle attachment member attached to a knuckle connected to a wheel portion, a spring member connecting the motor attachment member and the knuckle attachment member, a damper, and an operation direction of the spring member and the damper are guided. It comprises a guide member.

本発明によれば、車輪を駆動する電気モータ、あるいは、電気モータとこのモータの出力軸に連結され上記モータの回転を減速してホイールに伝達する減速歯車機構とを備えたギヤドモータを、例えば、上記モータのステータ側を支持するモータケースの側面側に取付けられるモータ取付部材と、車輪部に連結されるナックルに取付けられるナックル取付部材と、上記モータ取付部材と上記ナックル取付部材とを連結するバネ部材、ダンパー、及び、上記バネ部材とダンパーとの作動方向を案内するガイド部材とを備えた動的吸振装置を介して車輌バネ下部に取り付けるようにしたので、インナーロータ型のモータを用いた場合でも、ストローク幅を大きくとることのでき、かつ、モータの質量をダイナミックダンパーの質量として安定して動作させることができる。
また、動的吸振装置はモータの側面側、または、上記モータと上記減速歯車の側面側に配置されるので、レイアウト性及び組立性に優れるとともに、モータあるいはギヤドモータを支持するアーム類が不要となるので、システムの小型軽量化を図ることができる。 According to the present invention, an electric motor that drives a wheel, or a geared motor that includes an electric motor and a reduction gear mechanism that is connected to an output shaft of the motor and decelerates the rotation of the motor and transmits it to the wheel. A motor mounting member mounted on a side surface of a motor case supporting the stator side of the motor; a knuckle mounting member mounted on a knuckle coupled to a wheel portion; and a spring coupling the motor mounting member and the knuckle mounting member. When the inner rotor type motor is used because it is attached to the lower part of the vehicle spring via a dynamic vibration absorber having a member, a damper, and a guide member for guiding the operating direction of the spring member and the damper. However, the stroke width can be increased and the mass of the motor is stable as the mass of the dynamic damper. It can be created.
In addition, since the dynamic vibration absorber is arranged on the side surface of the motor or on the side surface of the motor and the reduction gear, it has excellent layout and assemblability and does not require an arm for supporting the motor or the geared motor. Therefore, the system can be reduced in size and weight.

以下、本発明の最良の形態について、図面に基づき説明する。
図１及び図２は、本最良の形態に係るインホイールモータシステムの構成を示す図で、各図において、１はタイヤ、２はリム２ａとホイールディスク２ｂとから成るホイール、３は上記ホイール２とその回転軸において連結されたホイールハブ、４はコイルバネ４ａとショックアブゾーバ４ｂとを備え、上記ホイールハブ３と軸受け５ｊを介して連結されるナックル５を車体に懸架するストラット、６は上記ホイールハブ３に装着されたブレーキロータ６ａと上記ナックル５に取付けられたブレーキキャリパー６ｂとを備えた制動装置、７は上記ストラット４に接続される上アーム、８は上記ナックル５を下部から支持する下アーム、１０はステータ１０Ｓ側を支持するモータケース１０ａと、上記モータケース１０ａに軸受け１０ｊを介して回転自在に取付けられた出力軸１０ｂと、この出力軸１０ｂに取付けられたロータ１０Ｒとを備えたインナーロータ型の電気モータで、本例では、この電気モータ１０のステータ１０Ｓ側を支持するモータケース１０ａの側面側と上記ナックル５の上部側とを、動的吸振装置２０を介して連結し、上記電気モータ１０をダイナミックダンパーの質量として機能させるようにするとともに、モータの出力軸１０ｂとホイールハブ３の回転軸３ｋとを、フレキシブルカップリング１１により結合することにより、上記電気モータ１０が揺動してもホイール２に回転力を確実に伝達できるようにしている。なお、図２では、動的吸振装置２０の取付け状態を明確にするため、ストラット４については省略した。 Hereinafter, the best mode of the present invention will be described with reference to the drawings.
1 and 2 are diagrams showing the configuration of an in-wheel motor system according to the best mode. In each figure, 1 is a tire, 2 is a wheel composed of a rim 2a and a wheel disc 2b, and 3 is the wheel 2 described above. And a wheel hub 4 connected at the rotating shaft thereof, 4 includes a coil spring 4a and a shock absorber 4b, a strut for hanging a knuckle 5 connected to the wheel hub 3 via a bearing 5j on a vehicle body, and 6 a wheel. A braking device including a brake rotor 6a attached to the hub 3 and a brake caliper 6b attached to the knuckle 5, 7 is an upper arm connected to the strut 4, and 8 is a lower support for supporting the knuckle 5 from below. The arm 10 includes a motor case 10a that supports the stator 10S side, and a bearing 10j on the motor case 10a. An inner rotor type electric motor including an output shaft 10b that is rotatably mounted and a rotor 10R that is mounted on the output shaft 10b. In this example, a motor case that supports the stator 10S side of the electric motor 10 The side surface of 10a and the upper side of the knuckle 5 are connected via a dynamic vibration absorber 20, so that the electric motor 10 functions as the mass of the dynamic damper, and the output shaft 10b of the motor and the wheel hub 3 is coupled by a flexible coupling 11 so that the rotational force can be reliably transmitted to the wheel 2 even when the electric motor 10 swings. In FIG. 2, the strut 4 is omitted in order to clarify the mounting state of the dynamic vibration absorber 20.

上記動的吸振装置２０は、図３（ａ），（ｂ）に示すように、モータケース１０ａの側面側に取付けられるモータ取付部材２１と、ナックル５に取付けられるナックル取付部材２２と、上記モータ取付部材２１と上記ナックル取付部材２２とを連結するコイルバネから成るバネ部材２３と、シリンダ２４ａとガイドシャフト２４ｂとから成り、上記バネ部材２３の作動方向を上下方向に案内する２つのガイド部材２４，２４と、上記ガイド部材２４，２４に平行に配置された、シリンダ２５ａと図示しないピストンとこのピストンに連結されたシャフト２５ｂとを有するダンパー２５と、上記ガイド部材２４，２４への塵芥や泥水の侵入を防止するためのジャバラ状のブーツ２６，２７とを備えたもので、ブーツ２６は上記ナックル取付部材２２の上部側に設けられ、上側のブーツ２６の蓋部２６ａに上記ガイドシャフト２４ｂ，２４ｂの上端側が固定される。また、ブーツ２７は、モータ取付部材２１と上記ナックル取付部材２２との間に設けられる。   As shown in FIGS. 3A and 3B, the dynamic vibration absorber 20 includes a motor attachment member 21 attached to the side surface of the motor case 10a, a knuckle attachment member 22 attached to the knuckle 5, and the motor. A spring member 23 comprising a coil spring for connecting the attachment member 21 and the knuckle attachment member 22, a cylinder 24a and a guide shaft 24b, and two guide members 24 for guiding the operating direction of the spring member 23 in the vertical direction; 24, a damper 25 having a cylinder 25a, a piston (not shown), and a shaft 25b connected to the piston, which are arranged in parallel to the guide members 24, 24, and dust and muddy water to the guide members 24, 24. Bellows-shaped boots 26 and 27 for preventing intrusion, the boot 26 being the knuckle mounting member Provided at two upper side, the guide shaft 24b, is 24b upper side is fixed to the cover portion 26a of the upper of the boot 26. The boot 27 is provided between the motor attachment member 21 and the knuckle attachment member 22.

上記モータ取付部材２１は、上記バネ部材２３の下端側と上記ガイド部材２４，２４の可動部であるガイドシャフト２４ｂ，２４ｂの下端側とを固定する固定板２１ａと、この固定板２１ａの下部の、モータ軸方向に平行な方向の端部側と中央部とにそれぞれ設けられた、モータケース１０ａの断面の外形に沿った湾曲部２１ｋを有する脚部２１ｂ，２１ｃとを備えたもので、この脚部２１ｂ，２１ｃを、上記モータケース１０ａの外周側に突設された取付部１０ｍに固定ボルト２１ｍとナットとを用いて締結することにより、上記モータ取付部材２１側を上記モータケース１０ａに固定する。
また、ナックル取付部材２２は、上記バネ部材２３の上端側と上記ガイド部材２４の固定部であるシリンダ２４ａを固定する固定部材２２ａと、この固定部材２２ａを収納する筐体２２ｂと、この筐体２２ｂのナックル５側に設けられたナックル取付部２２ｃとを備えたもので、上記ナックル取付部２２ｃの上記ナックル５の上部側に設けられた取付孔５ｓと対応する位置に形成されたボルト挿入孔２２ｓに固定ボルト２２ｍを挿入し、ナットを用いて、上記ナックル取付部材２２を上記ナックル５に取付ける。 The motor mounting member 21 includes a fixed plate 21a for fixing a lower end side of the spring member 23 and a lower end side of guide shafts 24b and 24b, which are movable portions of the guide members 24 and 24, and a lower portion of the fixed plate 21a. And leg portions 21b and 21c having curved portions 21k along the outer shape of the cross section of the motor case 10a, which are respectively provided on the end portion side and the central portion in the direction parallel to the motor shaft direction. The motor mounting member 21 side is fixed to the motor case 10a by fastening the leg portions 21b and 21c to the mounting portion 10m protruding from the outer peripheral side of the motor case 10a using fixing bolts 21m and nuts. To do.
The knuckle mounting member 22 includes a fixing member 22a that fixes the upper end side of the spring member 23 and a cylinder 24a that is a fixing portion of the guide member 24, a housing 22b that houses the fixing member 22a, and the housing A bolt insertion hole formed at a position corresponding to a mounting hole 5s provided on the upper side of the knuckle 5 of the knuckle mounting part 22c. The fixing bolt 22m is inserted into 22s, and the knuckle attaching member 22 is attached to the knuckle 5 using a nut.

一方、ダンパー２５の固定部であるシリンダ２５ａは、上記筐体２２ｂの上記ナックル取付部２２ｃとは反対側の面に設けられたダンパー取付部２２ｄに、上記ダンパー２５の可動部であるシャフト２５ｂの端部は、上記中央部に位置する脚部２１ｃの上記湾曲部２１ｋとは反対側に設けられたダンパー取付部２１ｄに取付けられる。
また、本例では、図４（ａ），（ｂ）にも示すように、上記動的吸振装置２０の筐体２２ｂに、モータケース１０ａの中央方向に延長する突起部２２ｑを設けるとともに、上記モータケース１０ａに、その水平片の内側にストッパラバー１０ｑが取付けられたコ字型のラバー支持部材１０ｐを、上記ストッパラバー１０ｑと上記突起部２２ｑとが所定の距離離隔して対向するように取付けて、上記電気モータ１０の最大変位幅を容易に規制するようにするとともに、上記突起部２２ｑの端部を保持部材２８によりストラット４の下部に固定するようにしている。これにより、上記動的吸振装置２０によりフローティングマウントされる電気モータ１０の最大変位幅を容易に規制することができるので、路面から過大な入力があった場合でも、電気モータ１０の損傷を防ぐことができるとともに、上記動的吸振装置２０の固定部であるナックル取付部材２２は、ナックル５とストラット４との両方に固定されるので、動的吸振装置２０を安定して作動させることができる。 On the other hand, a cylinder 25a, which is a fixed portion of the damper 25, is connected to a damper mounting portion 22d provided on the surface of the casing 22b opposite to the knuckle mounting portion 22c, of a shaft 25b that is a movable portion of the damper 25. The end portion is attached to a damper attachment portion 21d provided on the side opposite to the curved portion 21k of the leg portion 21c located at the center portion.
In this example, as shown in FIGS. 4A and 4B, the housing 22b of the dynamic vibration absorber 20 is provided with a protrusion 22q extending in the center direction of the motor case 10a, and A U-shaped rubber support member 10p having a stopper rubber 10q attached to the inner side of the horizontal piece is attached to the motor case 10a so that the stopper rubber 10q and the protrusion 22q face each other with a predetermined distance therebetween. Thus, the maximum displacement width of the electric motor 10 is easily regulated, and the end of the protrusion 22q is fixed to the lower portion of the strut 4 by the holding member 28. Thereby, since the maximum displacement width of the electric motor 10 that is floating-mounted by the dynamic vibration absorber 20 can be easily regulated, even if there is an excessive input from the road surface, the electric motor 10 is prevented from being damaged. In addition, the knuckle attachment member 22 that is a fixing portion of the dynamic vibration absorber 20 is fixed to both the knuckle 5 and the strut 4, so that the dynamic vibration absorber 20 can be stably operated.

このように、本最良の形態によれば、インホイールモータを車輌バネ下部にフローティングマウントする際に、電気モータ１０のモータケース１０ａの側面側に取付けられるモータ取付部材２１と、ナックル５に取付けられるナックル取付部材２２と、上記モータ取付部材２１と上記ナックル取付部材２２とを連結するバネ部材２３と上記バネ部材２３の作動方向を上下方向に案内する２つのガイド部材２４，２４と、上記ガイド部材２４，２４に平行に配置されたダンパー２５とを備えた動的吸振装置２０を上記電気モータ１０の側面側に配置して、上記電気モータ１０と上記ナックル５とを結合するようにしたので、インナーロータ型のモータを用いた場合でも、ストローク幅を大きくとることのできるとともに、モータの質量をダイナミックダンパーの質量として安定して動作させることができる。
また、動的吸振装置２０は電気モータ１０の側面側に配置されるので、レイアウト性及び組立性に優れるとともに、電気モータ１０を支持するアーム類が不要となるので、システムの小型軽量化を図ることができる。 Thus, according to this best mode, when the in-wheel motor is floating mounted below the vehicle spring, it is attached to the knuckle 5 and the motor attachment member 21 attached to the side surface of the motor case 10a of the electric motor 10. A knuckle mounting member 22, a spring member 23 connecting the motor mounting member 21 and the knuckle mounting member 22, two guide members 24 and 24 for guiding the operating direction of the spring member 23 in the vertical direction, and the guide member Since the dynamic vibration absorber 20 provided with the damper 25 arranged in parallel with 24, 24 is arranged on the side surface side of the electric motor 10, the electric motor 10 and the knuckle 5 are coupled. Even when an inner rotor type motor is used, the stroke width can be increased and the mass of the motor It can be stably operated as a mass of Kkudanpa.
Further, since the dynamic vibration absorber 20 is arranged on the side surface side of the electric motor 10, it is excellent in layout and assemblability, and an arm for supporting the electric motor 10 is not required, thereby reducing the size and weight of the system. be able to.

なお、上記最良の形態では、モータ取付部材２１とナックル取付部材２２とをバネ部材２３と２つのガイド部材２４，２４とで結合したが、図５（ａ），（ｂ）に示すように、モータ取付部材２１とナックル取付部材２２とを、リニアベアリング２９ａとロッド２９ｂとから成る直動ガイド２９Ａとバネ部材２９Ｂとを一体に構成した２本のバネ付き直動ガイド２９を用いて結合してもよい。このとき、上記バネ部材２９Ｂはモータ取付部材２１とナックル取付部材２２との間にのみ配置されることはいうまでもない。なお、バネ付き直動ガイド２９を１個とし、他方は直動ガイド２９Ａとしてもよいが、２個とした方がバネ部材２９Ｂの定数設定が容易である。
また、上記例では、車輪を駆動するモータをダイレクトドライブモータとしたが、図６に示すように、本発明は、インホイールモータとして、電気モータ１０とこの電気モータ１０の回転を減速してホイールに伝達する減速歯車機構１２を備えたギヤドモータ１０Ｇを用いた場合にも適用可能である。この場合には、同図に示すように、電気モータ１０のモータケース１０ａを上記構成の動的吸振装置２０を用いてナックル５に結合するようにすればよいが、モータケースとギヤケースとを一体にしたモータハウジングを作製してこれに電気モータ１０と減速歯車機構１２とを収納するとともに、上記モータハウジングの側面側とナックル５とを、上記動的吸振装置２０とと同様な構成の動的吸振装置を用いて結合するようにしてもよい。
また、本発明は、図１に示したストラット型のサスペンションを有する車輌に限らず、ダブルウイッシュボーン型のサスペンションなど、他の構成のサスペンションを有する車輌にも適用可能である。 In the above-mentioned best mode, the motor mounting member 21 and the knuckle mounting member 22 are coupled by the spring member 23 and the two guide members 24, 24. As shown in FIGS. 5 (a) and 5 (b), The motor mounting member 21 and the knuckle mounting member 22 are coupled using two linear motion guides 29 with springs, in which a linear motion guide 29A composed of a linear bearing 29a and a rod 29b and a spring member 29B are integrally formed. Also good. At this time, it goes without saying that the spring member 29B is disposed only between the motor attachment member 21 and the knuckle attachment member 22. The number of the linear guide 29 with spring may be one, and the other may be the linear guide 29A. However, the constant setting of the spring member 29B is easier when the number is two.
In the above example, the motor for driving the wheel is a direct drive motor. However, as shown in FIG. 6, the present invention is an in-wheel motor in which the electric motor 10 and the rotation of the electric motor 10 are decelerated. The present invention can also be applied to a case where a geared motor 10G provided with a reduction gear mechanism 12 for transmitting to the motor is used. In this case, as shown in the figure, the motor case 10a of the electric motor 10 may be coupled to the knuckle 5 using the dynamic vibration absorber 20 having the above-described configuration, but the motor case and the gear case are integrated. The motor housing is manufactured and the electric motor 10 and the reduction gear mechanism 12 are accommodated therein, and the side surface side of the motor housing and the knuckle 5 are configured in a dynamic manner similar to that of the dynamic vibration absorber 20. You may make it couple | bond using a vibration absorber.
Further, the present invention is not limited to the vehicle having the strut type suspension shown in FIG. 1 but can be applied to a vehicle having a suspension having another configuration such as a double wishbone type suspension.

以上説明したように、本発明によれば、インナーロータ型のモータを用いた場合でも、ストローク幅を大きくとることのでき、かつ、モータの質量をダイナミックダンパーの質量として安定して動作させることができるとともに、動的吸振装置を小型軽量化できるので、レイアウト性及び組立性に優れるとともに、システムの小型軽量化を図ることができ、車輌の走行安全性と快適性を更に向上させることができる。   As described above, according to the present invention, even when an inner rotor type motor is used, the stroke width can be increased and the mass of the motor can be stably operated as the mass of the dynamic damper. In addition, since the dynamic vibration damping device can be reduced in size and weight, the layout and assembly are excellent, the system can be reduced in size and weight, and the driving safety and comfort of the vehicle can be further improved.

本発明の最良の形態に係るインホイールモータシステムの構成を示す正面図である。It is a front view which shows the structure of the in-wheel motor system which concerns on the best form of this invention. 本最良の形態に係るインホイールモータシステムの構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the in-wheel motor system which concerns on this best form. 本最良の形態に係る動的吸振装置の構成を示す図である。It is a figure which shows the structure of the dynamic vibration damper which concerns on this best form. 本発明によるインホイールモータシステムの構成を示す斜視図である。It is a perspective view which shows the structure of the in-wheel motor system by this invention. 動的吸振装置の他の構成を示す図である。It is a figure which shows the other structure of a dynamic vibration damper. 本発明の動的吸振装置をギヤドモータに適用した例を示す図である。It is a figure which shows the example which applied the dynamic vibration damper of this invention to the geared motor. 従来のインホイールモータシステムの構成を示す図である。It is a figure which shows the structure of the conventional in-wheel motor system. 従来の動的吸振装置の構成を示す図である。It is a figure which shows the structure of the conventional dynamic vibration damper. 従来のギヤドモータを用いたインホイールモータシステムの構成を示す図である。It is a figure which shows the structure of the in-wheel motor system using the conventional geared motor.

符号の説明Explanation of symbols

１ タイヤ、２ ホイール、２ａ リム、２ｂ ホイールディスク、
３ ホイールハブ、３ｋ ハブの回転軸、４ ストラット、４ａ コイルバネ、
４ｂ ショックアブゾーバ、５ ナックル、５ｊ 軸受け、５ｓ 貫通孔、
６ 制動装置、６ａ ブレーキロータ、６ｂ ブレーキキャリパー、７ 上アーム、
８ 下アーム、１０ 電気モータ、１０Ｓ ステータ、１０Ｒ ロータ、
１０ａ モータケース、１０ｂ 出力軸、１０ｊ 軸受け、１０ｍ 取付部、
１０ｐ ラバー支持部材、１０ｑ ストッパラバー、１０Ｇ ギヤドモータ、
１１ フレキシブルカップリング、１２ 減速歯車機構、
２０ 動的吸振装置、２１ モータ取付部材、２１ａ 固定板、２１ｂ，２１ｃ 脚部、
２１ｄ ダンパー取付部、２１ｋ 湾曲部、２１ｍ，２２ｍ 固定ボルト、
２２ ナックル取付部材、２２ａ 固定部材、２２ｂ 筐体、２２ｃ ナックル取付部、２２ｄ ダンパー取付部、２２ｑ 突起部、２２ｓ ボルト挿入孔、２３ バネ部材、
２４ ガイド部材、２４ａ シリンダ、２４ｂ ガイドシャフト、２５ ダンパー、
２５ａ シリンダ、２５ｂ シャフト、２６，２７ ジャバラ状のブーツ、
２６ａ 蓋部。 1 tire, 2 wheel, 2a rim, 2b wheel disc,
3 wheel hub, 3k hub rotation axis, 4 struts, 4a coil spring,
4b Shock absorber, 5 knuckle, 5j bearing, 5s through hole,
6 brake device, 6a brake rotor, 6b brake caliper, 7 upper arm,
8 lower arm, 10 electric motor, 10S stator, 10R rotor,
10a motor case, 10b output shaft, 10j bearing, 10m mounting part,
10p rubber support member, 10q stopper rubber, 10G geared motor,
11 Flexible coupling, 12 Reduction gear mechanism,
20 dynamic vibration absorber, 21 motor mounting member, 21a fixing plate, 21b, 21c legs,
21d damper mounting part, 21k curved part, 21m, 22m fixing bolt,
22 knuckle attachment member, 22a fixing member, 22b housing, 22c knuckle attachment portion, 22d damper attachment portion, 22q protrusion, 22s bolt insertion hole, 23 spring member,
24 guide member, 24a cylinder, 24b guide shaft, 25 damper,
25a cylinder, 25b shaft, 26, 27 bellows boots,
26a Lid.

Claims (3)

車輪を駆動するモータを、動的吸振装置を介して車輌バネ下部材に取り付け、上記モータの質量を動的吸振装置の質量として使用する構成のインホイールモータシステムにおいて、上記動的吸振装置を上記モータの側面側に配置したことを特徴とするインホイールモータシステム。   In an in-wheel motor system configured to attach a motor for driving wheels to a vehicle unsprung member via a dynamic vibration absorber and use the mass of the motor as the mass of the dynamic vibration absorber, the dynamic vibration absorber is An in-wheel motor system characterized by being arranged on a side surface of the motor. 電気モータとこのモータの出力軸に連結され上記モータの回転を減速してホイールに伝達する減速歯車機構とを備えたギヤドモータを、動的吸振装置を介して車輌バネ下部に取り付け、上記ギヤドモータの質量を動的吸振装置の質量として使用する構成のインホイールモータシステムにおいて、上記動的吸振装置を、モータの側面側、または、上記モータと上記減速歯車の側面側に配置したことを特徴とするインホイールモータシステム。   A geared motor having an electric motor and a reduction gear mechanism that is connected to an output shaft of the motor and transmits the rotation to the wheel by reducing the rotation of the motor is attached to the lower part of the vehicle spring via a dynamic vibration absorber, and the mass of the geared motor In an in-wheel motor system configured to use the dynamic vibration absorber as a mass of the dynamic vibration absorber, the dynamic vibration absorber is disposed on a side surface of the motor or on a side surface of the motor and the reduction gear. Wheel motor system. 上記動的吸振装置を、上記モータのステータ側を支持するモータケースの側面側に取付けられるモータ取付部材と、車輪部に連結されるナックルに取付けられるナックル取付部材と、上記モータ取付部材と上記ナックル取付部材とを連結するバネ部材、ダンパー、及び、上記バネ部材とダンパーとの作動方向を案内するガイド部材とから構成したことを特徴とする請求項１または請求項２に記載のインホイールモータシステム。
A motor mounting member that is mounted on the side surface of a motor case that supports the stator side of the motor, the knuckle mounting member that is mounted on a knuckle connected to a wheel portion, the motor mounting member, and the knuckle The in-wheel motor system according to claim 1, wherein the in-wheel motor system includes a spring member that couples to the mounting member, a damper, and a guide member that guides an operating direction of the spring member and the damper. .
JP2006009133A 2006-01-17 2006-01-17 In-wheel motor system Withdrawn JP2007190970A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2006009133A JP2007190970A (en) 2006-01-17 2006-01-17 In-wheel motor system
PCT/JP2007/050557 WO2007083645A1 (en) 2006-01-17 2007-01-17 In-wheel type motor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006009133A JP2007190970A (en) 2006-01-17 2006-01-17 In-wheel motor system

Publications (1)

Publication Number Publication Date
JP2007190970A true JP2007190970A (en) 2007-08-02

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JP2006009133A Withdrawn JP2007190970A (en) 2006-01-17 2006-01-17 In-wheel motor system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017171251A (en) * 2016-03-25 2017-09-28 日産自動車株式会社 In-wheel motor drive device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005324606A (en) * 2004-05-12 2005-11-24 Toyota Motor Corp Electric automobile
JP4139353B2 (en) * 2004-05-25 2008-08-27 トヨタ自動車株式会社 Wheel support device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017171251A (en) * 2016-03-25 2017-09-28 日産自動車株式会社 In-wheel motor drive device

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