WO2002064386A1 - Suspension mechanism of electric car - Google Patents

Suspension mechanism of electric car Download PDF

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Publication number
WO2002064386A1
WO2002064386A1 PCT/JP2001/011433 JP0111433W WO02064386A1 WO 2002064386 A1 WO2002064386 A1 WO 2002064386A1 JP 0111433 W JP0111433 W JP 0111433W WO 02064386 A1 WO02064386 A1 WO 02064386A1
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WO
WIPO (PCT)
Prior art keywords
arm
suspension mechanism
wheel
electric vehicle
wheel motor
Prior art date
Application number
PCT/JP2001/011433
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroshi Shimizu
Original Assignee
Japan Science And Technology Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Japan Science And Technology Corporation filed Critical Japan Science And Technology Corporation
Publication of WO2002064386A1 publication Critical patent/WO2002064386A1/en

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Classifications

    • 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
    • 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
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/422—Driving wheels or live axles
    • 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
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/312—The spring being a 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
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/129—Damper mount on wheel suspension or knuckle
    • 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
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/148—Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
    • 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
    • B60G2204/30—In-wheel mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/50—Electric vehicles; Hybrid vehicles
    • 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

Definitions

  • the present invention relates to an electric vehicle, and more particularly to a suspension mechanism of an electric vehicle in which a driving motor is integrally mounted on wheels.
  • FIG. 1 is a schematic configuration diagram of a suspension mechanism of an electric vehicle that is not the conventional in-wheel motor type of a general vehicle
  • FIG. 1 (a) is a front view of the suspension mechanism of the electric vehicle
  • FIG. 1 (b) is a plan view of the suspension mechanism of the electric vehicle.
  • 101 is a frame (chassis), 102 and 105 are subframes, 103 is an upper arm (wishbone shape), 104 and 107 are joints, and 106 is a joint.
  • Lower arm (wishbone shape) 108 is a brake, 109 is a wheel, 110 is a tire, and 111 is a shock absorber consisting of a damper and a spring.
  • the cushioning device 1 1 1 1 is used in order to secure a sufficient space between the frame 1 1 and the wheel 1 9. Installation did not matter much.
  • FIG. 2 is a schematic front view of a suspension mechanism of a conventional in-wheel motor type electric vehicle.
  • 201 is a frame (car chassis), 202 and 205 are subframes, 203 is an upper arm (wishbone shape), 204 and 207 are joints, and 206 is a joint Lower arm (wishbone shape), 208 is the in-wheel motor-(including the reduction gear mechanism), 209 is the brake, 210 is the wheel, 211 is the tire, and 211 is the upper sub
  • the frame 2 13 is a shock absorber composed of a damper and a panel disposed between the upper sub-frame 2 12 and Atsuno, 0 -arm 203. Disclosure of the invention
  • the in-wheel motor (including the reduction gear mechanism) 208 is disposed so as to protrude toward the vehicle body of the wheel 210. I have no choice. Furthermore, in order to obtain a high output, the in-wheel motor becomes large and the space for the reduction gear mechanism is required, so that the wheel 210 must be designed to protrude further toward the vehicle body. Absent.
  • an upper sub-frame 211 is provided above the frame 201, and a shock absorber 2 is provided between the tip of the upper sub-frame 212 and the upper arm 203. 13 must be provided. Then, a space must be provided between the frame (chassis) 201 and the vehicle body (cabin), but there is sufficient space between the frame (chassis) 201 and the car body (cabin). In this case, the vehicle body (cabin) became too high, resulting in a short stroke of the damper damper.
  • the present invention has been made to solve the above problems, and to provide a shock absorber without increasing the space in the vehicle height direction even when the in-wheel motor is arranged so as to protrude toward the vehicle body of the wheel.
  • the purpose of the present invention is to provide a suspension mechanism for an electric vehicle that can be operated.
  • an in-wheel motor in which a driving motor is mounted so as to protrude toward the vehicle body side of a wheel, and one end is jointly connected to a lower portion of the in-wheel motor, and the other end.
  • An upper arm pivotally supported on the vehicle body side; an upper arm having one end jointly connected to an upper portion of the in-wheel motor; and an upper arm supported on the other end with the vehicle body side; and a vehicle body of the in-wheel motor.
  • a shock absorber comprising a panel and a damper for attenuating vertical vibration of the vehicle, and a substantially L-shaped connection arm which bypasses an outer case of the in-wheel motor.
  • One end is fixed to the wheel side joint of the lower arm, and the shock absorber is laterally arranged between the other end extending upward and the vehicle body side.
  • the substantially L-shaped connecting arm has a crotch shape so that a curved portion of the substantially L-shaped connecting arm avoids interference with the in-wheel motor. It is characterized by being open and having a shape integrated at both ends.
  • the mouth arm is formed in a wishbone shape, and the connecting arm is connected to an arm on one side of the mouth arm.
  • a suspension mechanism for an electric vehicle characterized by:
  • the lower arm has a wishbone shape, and the connecting arm is connected to both of the lower arm. This is a suspension mechanism for electric vehicles.
  • FIG. 1 is a schematic configuration diagram of a conventional suspension mechanism of an electric vehicle that is not a single wheel motor of a general vehicle.
  • FIG. 2 is a schematic front view of a conventional suspension mechanism of an in-wheel motor type electric vehicle.
  • FIG. 3 is a schematic side view of a suspension mechanism of an in-wheel motor type electric vehicle according to the present invention.
  • FIG. 4 shows a suspension machine for an in-wheel motor type electric vehicle according to the present invention. It is a figure which shows the structure of the connection arm connected to a structure shock absorber.
  • FIG. 5 is a side view showing the structure of another connecting arm connected to the shock absorber of the suspension mechanism of the electric vehicle of the type with the in-wheel motor of the present invention.
  • FIG. 3 is a schematic side view of a suspension mechanism of an in-wheel motor type electric vehicle according to the present invention.
  • 1 is a frame (chassis), 2 and 5 are subframes, 3 is an upper arm (wishbone shape), 4 and 7 are joints, 6 is a lower arm (wishbone shape), and 8 is a damper and panel.
  • a shock absorber, 9 is a joint, 10 is a substantially L-shaped connecting arm arranged so as to bypass the outer case of the in-wheel motor 1 1, 1 1 is an in-wheel motor, 1 2 is a brake, 1 3 Are wheels and 14 are tires.
  • the substantially L-shaped connecting arm 10 connects the outer case of the in-wheel motor 11. Due to the detour arrangement, the shock absorber 8 can be arranged laterally.
  • one end of the shock absorber 8 can be directly attached to the frame 1, so that the conventional upper subframe is not required, and the space can be reduced accordingly. Further, the stroke of the shock absorber 8 can be increased.
  • the lower arm 6 may have a wishbone shape, and the connecting arm 10 may be connected to one arm of the mouth arm 6.
  • the lower arm 6 may be formed in a wishbone shape, and the connecting arm 10 may be connected to the arms on both sides of the mouth arm 6.
  • FIG. 4 is a diagram showing a structure of a connecting arm connected to a shock absorber of a suspension mechanism of an in-wheel motor type electric vehicle according to the present invention.
  • FIG. 4 (a) is a side view thereof
  • FIG. ) Is a plan view thereof.
  • the connecting arm 10 is substantially L-shaped when viewed from the side as shown in FIG. 4 (a), and is shown in FIG. 4 (b) when viewed from the plane.
  • the joint 7 is opened in a crotch shape, and both ends have a shape integrated by the joint 9, and the central portion 1 OA of the integrated both ends is attached to the tip of the shock absorber 8. I try to join.
  • the substantially L-shaped connecting arm 10 is opened in a crotch shape as shown in FIG. Since it has an integrated shape at both ends, it does not cushion the outer case of the in-wheel motor.
  • the lower arm has a wishbone shape and the connecting arm 10 is connected to the arms on both sides of the lower arm.
  • FIG. 5 is a side view showing the structure of another connecting arm connected to the shock absorber of the suspension mechanism of the electric vehicle of the present invention.
  • a substantially L-shaped connecting arm 22 arranged so as to bypass the outer case of the in-wheel motor 1 has a vehicle side joint 20 common to the mouth arm 21. At the same time, it is common to the lower arm 21 up to the middle of the arm, but branches off from the middle to become the arm 22A, and its tip is connected to the joint 23 connected to the tip of the shock absorber. It is configured.
  • the mouth arm 21 has a wishbone shape
  • the connecting arm 22 is connected to the arms on both sides of the lower arm 21.
  • the suspension mechanism of the present invention is particularly suitable as a suspension mechanism of an electric vehicle that requires a large degree of freedom in designing a chassis of an electric vehicle having an in-wheel motor and requires space saving.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

A suspension mechanism of an electric car allowing a shock absorber to be disposed therein without increasing a space in the height direction of a vehicle even if an in-wheel motor is disposed so as to be projected from the body side of a wheel, comprising the in-wheel motor (11) incorporating a drive motor so as to be projected from the body side of the wheel, a lower arm (6) having one end jointed to the lower part of the in-wheel motor (11) and the other end pivoted to the body side, an upper arm (3) having one end jointed to the upper part of the in-wheel motor (11) and the other end pivoted to the body side, the shock absorber (8) formed of a spring and a damper for attenuating the vertical movement of the in-wheel motor (11) relative to a body, and a generally L-shaped connection arm (10) bypassing the outer case of the in-wheel motor (11), wherein one end of the generally L-shaped connection arm (10) is fixed to the wheel side joint part of the lower arm (6), and the shock absorber (8) is disposed laterally between the other end thereof located above the joint part and the body side.

Description

電気自動車のサ ヨン機構 技術分野 Sayon mechanism of electric vehicle Technical field
本発明は、 電気自動車に係り、 特に駆動用モーターを車輪に一体に組み付けた 電気自動車のサスペンション機構に関するものである。 明 The present invention relates to an electric vehicle, and more particularly to a suspension mechanism of an electric vehicle in which a driving motor is integrally mounted on wheels. Light
·景技術 細  · Scenic technology
従来、 このような分野の先行技術としては、 以下に示すようなものがあった。 第 1図はかかる従来の一般車のィンホイールモータ一型でない電気自動車のサ スペンション機構の概略構成図であり、 第 1図 （a ) はその電気自動車のサスぺ ンシヨン機構の正面図、 第 1図 （b ) はその電気自動車のサスペンション機構の 平面図である。  Heretofore, there have been the following prior arts in such a field. FIG. 1 is a schematic configuration diagram of a suspension mechanism of an electric vehicle that is not the conventional in-wheel motor type of a general vehicle, and FIG. 1 (a) is a front view of the suspension mechanism of the electric vehicle. FIG. 1 (b) is a plan view of the suspension mechanism of the electric vehicle.
図中、 1 0 1はフレーム （車台） 、 1 0 2 , 1 0 5はサブフレーム、 1 0 3は アツパ—アーム （ウィッシュボーン状） 、 1 0 4 , 1 0 7はジョイント、 1 0 6 はローアーアーム （ウイッシュボーン状） 、 1 0 8はブレーキ、 1 0 9は車輪、 1 1 0はタイヤ、 1 1 1はダンバ一とバネからなる緩衝装置である。  In the figure, 101 is a frame (chassis), 102 and 105 are subframes, 103 is an upper arm (wishbone shape), 104 and 107 are joints, and 106 is a joint. Lower arm (wishbone shape), 108 is a brake, 109 is a wheel, 110 is a tire, and 111 is a shock absorber consisting of a damper and a spring.
このように、 従来のィンホイールモータ一型でない電気自動車のサスペンショ ン機構では、 フレーム （車台） 1 0 1と車輪 1 0 9とのスペースを十分に確保で きるために、 緩衝装置 1 1 1の設置はさほど問題にはならなかった。  As described above, in the conventional suspension mechanism for an electric vehicle that is not a one-wheel motor type, the cushioning device 1 1 1 1 is used in order to secure a sufficient space between the frame 1 1 and the wheel 1 9. Installation did not matter much.
第 2図は従来のィンホイールモーター型の電気自動車のサスペンション機構の 概略正面図である。  FIG. 2 is a schematic front view of a suspension mechanism of a conventional in-wheel motor type electric vehicle.
この図において、 2 0 1はフレーム （車台） 、 2 0 2 , 2 0 5はサブフレーム、 2 0 3はアッパーアーム （ウィッシュボーン状） 、 2 0 4 , 2 0 7はジョイント、 2 0 6はローアーアーム （ウイッシュボーン状） 、 2 0 8はィンホイールモー夕 ― (減速歯車機構を含む） 、 2 0 9はブレーキ、 2 1 0は車輪、 2 1 1はタイヤ、 2 1 2はアッパーサブフレーム、 2 1 3はアッパーサブフレーム 2 1 2とアツノ、0 —アーム 2 0 3間に配置されるダンバ一とパネからなる緩衝装置である。 発明の開示 In this figure, 201 is a frame (car chassis), 202 and 205 are subframes, 203 is an upper arm (wishbone shape), 204 and 207 are joints, and 206 is a joint Lower arm (wishbone shape), 208 is the in-wheel motor-(including the reduction gear mechanism), 209 is the brake, 210 is the wheel, 211 is the tire, and 211 is the upper sub The frame 2 13 is a shock absorber composed of a damper and a panel disposed between the upper sub-frame 2 12 and Atsuno, 0 -arm 203. Disclosure of the invention
このように、 ィンホイ一ルモ一ター型の電気自動車のサスペンション機構にあ つては、 インホイールモータ一 （減速歯車機構を含む） 2 0 8は車輪 2 1 0の車 体側に突出するように配置せざるを得ない。 さらに、 高い出力を得るためには、 インホイールモータ一も大型になり、 また、 減速歯車機構のスペースも要するた めに、 ますます車輪 2 1 0の車体側に突出する設計にならざるを得ない。  As described above, in the suspension mechanism of the in-wheel motor type electric vehicle, the in-wheel motor (including the reduction gear mechanism) 208 is disposed so as to protrude toward the vehicle body of the wheel 210. I have no choice. Furthermore, in order to obtain a high output, the in-wheel motor becomes large and the space for the reduction gear mechanism is required, so that the wheel 210 must be designed to protrude further toward the vehicle body. Absent.
したがって、 インホイールモーター 2 0 8が車輪 2 1 0の車体側に配置される 分だけ、 ダンパーとパネからなる緩衝装置 2 1 3のスペースを確保することがで きなくなる。 そのため、 第 2図に示すように、 フレーム 2 0 1より上部に向けて アツパ一サブフレーム 2 1 2を設け、 そのアッパーサブフレーム 2 1 2の先端と アッパーアーム 2 0 3間に、 緩衝装置 2 1 3を設けなければならなくなる。 すると、 フレーム （車台） 2 0 1と車体 （車室） との間にスペースをとらざる を得なくなるが、 フレーム （車台） 2 0 1と車体 （車室） との間はスペースを十 分にとると、 車体 （車室） が高くなつてしまい、 結果として緩衝装置のダンバー のストローク不足を招くといつた問題があつた。  Therefore, it is not possible to secure a space for the shock absorber 2 13 composed of the damper and the panel by the amount of the in-wheel motor 208 arranged on the vehicle body side of the wheel 210. Therefore, as shown in FIG. 2, an upper sub-frame 211 is provided above the frame 201, and a shock absorber 2 is provided between the tip of the upper sub-frame 212 and the upper arm 203. 13 must be provided. Then, a space must be provided between the frame (chassis) 201 and the vehicle body (cabin), but there is sufficient space between the frame (chassis) 201 and the car body (cabin). In this case, the vehicle body (cabin) became too high, resulting in a short stroke of the damper damper.
本発明は、 上記問題点を除去し、 インホイールモータ一が車輪の車体側に突出 するように配置される場合においても、 車両の高さ方向にスペースを増加させる ことなく緩衝装置を配置することができる電気自動車のサスペンション機構を提 供することを目的とする。  The present invention has been made to solve the above problems, and to provide a shock absorber without increasing the space in the vehicle height direction even when the in-wheel motor is arranged so as to protrude toward the vehicle body of the wheel. The purpose of the present invention is to provide a suspension mechanism for an electric vehicle that can be operated.
本発明は、 上記目的を達成するために、  The present invention, in order to achieve the above object,
〔1〕 電気自動車のサスペンション機構において、 駆動用モー夕一を車輪の車 体側に突出するように組み込んだインホイールモ一ターと、 一端が前記インホイ —ルモータ一の下部にジョイント結合され、 他端が車体側に軸支された口一ァ一 アームと、 一端が前記インホイールモーターの上部にジョイント結合され、 他端 が車体側に軸支されたアッパーアームと、 前記ィンホイ一ルモ一ターの車体に対 する上下振動を減衰させるパネとダンパーからなる緩衝装置と、 前記ィンホイ一 ルモ一ターの外側ケースを迂回する略 L字形の連結アームとを備え、 前記略 L字 形の連結ァ一ムの一端を前記ローアーアームの車輪側ジョイント部に固定し、 そ の上方に延びる他端と車体側との間に前記緩衝装置を横方向に配置することを特 徵とする。 [1] In an electric vehicle suspension mechanism, an in-wheel motor in which a driving motor is mounted so as to protrude toward the vehicle body side of a wheel, and one end is jointly connected to a lower portion of the in-wheel motor, and the other end. An upper arm pivotally supported on the vehicle body side; an upper arm having one end jointly connected to an upper portion of the in-wheel motor; and an upper arm supported on the other end with the vehicle body side; and a vehicle body of the in-wheel motor. A shock absorber comprising a panel and a damper for attenuating vertical vibration of the vehicle, and a substantially L-shaped connection arm which bypasses an outer case of the in-wheel motor. One end is fixed to the wheel side joint of the lower arm, and the shock absorber is laterally arranged between the other end extending upward and the vehicle body side. 徵.
〔2〕 上記 〔1〕 記載の電気自動車のサスペンション機構において、 前記略 L 字形の連結アームは、 この略 L字形の連結アームの曲線部分が前記ィンホイ一ル モーターとの干渉を避けるため股状に開かれ、 その両端で一体化された形状を有 することを特徵とする。  [2] In the suspension mechanism for an electric vehicle according to the above [1], the substantially L-shaped connecting arm has a crotch shape so that a curved portion of the substantially L-shaped connecting arm avoids interference with the in-wheel motor. It is characterized by being open and having a shape integrated at both ends.
〔3〕 上記 〔1〕 記載の電気自動車のサスペンション機構において、 前記略 L 字形の連結アームの下部は前記ローアーアームの一部と共通に形成することを特 徵とする。  [3] The suspension mechanism for an electric vehicle according to the above [1], wherein a lower portion of the substantially L-shaped connecting arm is formed in common with a part of the lower arm.
〔4〕 上記 〔1〕 又は 〔3〕 記載の電気自動車のサスペンション機構において、 前記口一ァーアームはウイッシュボーン状からなり、 前記連結アームは前記口一 ァ一アームの片側のアームに連結されることを特徴とする電気自動車のサスペン シヨン機構。  (4) In the suspension mechanism for an electric vehicle according to the above (1) or (3), the mouth arm is formed in a wishbone shape, and the connecting arm is connected to an arm on one side of the mouth arm. A suspension mechanism for an electric vehicle, characterized by:
〔5〕 上記 〔1〕 又は 〔3〕 記載の電気自動車のサスペンション機構において、 前記ローアーアームはウイッシュボーン状からなり、 前記連結アームは前記ロー ァ一アームの両^! [のアームに連結されることを特徵とする電気自動車のサスペン ション機構。  [5] In the suspension mechanism for an electric vehicle according to the above [1] or [3], the lower arm has a wishbone shape, and the connecting arm is connected to both of the lower arm. This is a suspension mechanism for electric vehicles.
〔6〕 上記 〔2〕 記載の電気自動車のサスペンション機構において、 前記口一 ァ一アームはウイッシュボーン状からなり、 前記連結アームは前記ローアーァ一 ムの両側のアームに連結されることを特徵とする電気自動車のサスペンション機 構。 図面の簡単な説明  [6] The suspension mechanism for an electric vehicle according to the above [2], wherein the mouth arm has a wishbone shape, and the connecting arm is connected to arms on both sides of the lower arm. Electric vehicle suspension mechanism. BRIEF DESCRIPTION OF THE FIGURES
第 1図は、 従来の一般車のィンホイールモータ一型でない電気自動車のサスぺ ンション機構の概略構成図である。  FIG. 1 is a schematic configuration diagram of a conventional suspension mechanism of an electric vehicle that is not a single wheel motor of a general vehicle.
第 2図は、 従来のインホイールモータ一型の電気自動車のサスペンション機構 の概略正面図である。  FIG. 2 is a schematic front view of a conventional suspension mechanism of an in-wheel motor type electric vehicle.
第 3図は、 本発明のィンホイールモーター型の電気自動車のサスペンション機 構の概略側面図である。  FIG. 3 is a schematic side view of a suspension mechanism of an in-wheel motor type electric vehicle according to the present invention.
第 4図は、 本発明のィンホイールモーター型の電気自動車のサスペンション機 構の緩衝装置に連結する連結アームの構造を示す図である。 FIG. 4 shows a suspension machine for an in-wheel motor type electric vehicle according to the present invention. It is a figure which shows the structure of the connection arm connected to a structure shock absorber.
第 5図は、 本発明のィンホイールモータ一型の電気自動車のサスペンション機 構の緩衝装置に連結する他の連結ァ一ムの構造を示す側面図である。 発明を実施するための最良の形態  FIG. 5 is a side view showing the structure of another connecting arm connected to the shock absorber of the suspension mechanism of the electric vehicle of the type with the in-wheel motor of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
以下、 本発明の実施の形態について図面を参照しながら説明する。  Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第 3図は本発明のインホイールモ一ター型の電気自動車のサスペンション機構 の概略側面図である。  FIG. 3 is a schematic side view of a suspension mechanism of an in-wheel motor type electric vehicle according to the present invention.
図中、 1はフレーム （車台） 、 2， 5はサブフレーム、 3はアッパーアーム (ウィッシュボーン状） 、 4， 7はジョイント、 6はローアーアーム （ウイッシ ュボーン状） 、 8はダンパーとパネとからなる緩衝装置、 9はジョイント、 1 0 はインホイールモータ一 1 1の外側ケースを迂回するように配置される略 L字形 の連結アーム、 1 1はインホイールモータ一、 1 2はブレーキ、 1 3は車輪、 1 4はタイヤである。  In the figure, 1 is a frame (chassis), 2 and 5 are subframes, 3 is an upper arm (wishbone shape), 4 and 7 are joints, 6 is a lower arm (wishbone shape), and 8 is a damper and panel. A shock absorber, 9 is a joint, 10 is a substantially L-shaped connecting arm arranged so as to bypass the outer case of the in-wheel motor 1 1, 1 1 is an in-wheel motor, 1 2 is a brake, 1 3 Are wheels and 14 are tires.
このように、 インホイ一ルモータ一 1 1が車輪 1 3の車体側に突出して配置さ れていても、 略 L字形の連結アーム 1 0がインホイールモ一夕一 1 1の外側ケ一 スを迂回するように配置されているために、 緩衝装置 8を横方向に配置すること ができる。  Thus, even if the in-wheel motor 11 is protruded from the vehicle body side of the wheel 13, the substantially L-shaped connecting arm 10 connects the outer case of the in-wheel motor 11. Due to the detour arrangement, the shock absorber 8 can be arranged laterally.
このように構成したので、 緩衝装置 8の一端をフレーム 1に直接取り付けるこ とができるため、 従来のようなアッパーサブフレームが不要となり、 その分スぺ —スを低減することができる。 また、 緩衝装置 8のストロークを大きくすること ができる。  With such a configuration, one end of the shock absorber 8 can be directly attached to the frame 1, so that the conventional upper subframe is not required, and the space can be reduced accordingly. Further, the stroke of the shock absorber 8 can be increased.
この場合、 ローアーァ一ム 6はウィッシュボーン状からなり、 連結アーム 1 0 は口一ァ一アーム 6の片側のアームに連結されるようにしてもよい。  In this case, the lower arm 6 may have a wishbone shape, and the connecting arm 10 may be connected to one arm of the mouth arm 6.
または、 ローアーアーム 6はウィッシュボーン状からなり、 連結アーム 1 0は 口一ァ一アーム 6の両側のアームに連結されるようにしてもよい。  Alternatively, the lower arm 6 may be formed in a wishbone shape, and the connecting arm 10 may be connected to the arms on both sides of the mouth arm 6.
第 4図は本発明のインホイールモーター型の電気自動車のサスペンション機構 の緩衝装置に連結する連結アームの構造を示す図であり、 第 4図 （a ) はその側 面図、 第 4図 （b ) はその平面図である。 これらの図に示すように、 連結アーム 1 0は、 第 4図 （a ) に示すように、 側 面から見ると、 略 L字形をしており、 平面から見ると、 第 4図 （b ) に示すよう に、 ジョイント 7から股状に開かれ、 その両端がジョイント 9で一体化された形 状を有し、 その一体化された両端部の中央部 1 O Aを緩衝装置 8の先端部にジョ イントするようにしている。 FIG. 4 is a diagram showing a structure of a connecting arm connected to a shock absorber of a suspension mechanism of an in-wheel motor type electric vehicle according to the present invention. FIG. 4 (a) is a side view thereof, and FIG. ) Is a plan view thereof. As shown in these figures, the connecting arm 10 is substantially L-shaped when viewed from the side as shown in FIG. 4 (a), and is shown in FIG. 4 (b) when viewed from the plane. As shown in the figure, the joint 7 is opened in a crotch shape, and both ends have a shape integrated by the joint 9, and the central portion 1 OA of the integrated both ends is attached to the tip of the shock absorber 8. I try to join.
このように構成したので、 車輪がリバンプ状態の時、 つまり、 窪み （凹部） に 車輪が落ちた時でも、 略 L字形の連結アーム 1 0が第 4図に示すように股状に開 かれ、 その両端で一体化された形状をしているので、 インホイールモー夕一 1 1 の外側ケースと緩衝することはない。  With this configuration, even when the wheel is in a rebump state, that is, even when the wheel falls into a depression (recess), the substantially L-shaped connecting arm 10 is opened in a crotch shape as shown in FIG. Since it has an integrated shape at both ends, it does not cushion the outer case of the in-wheel motor.
なお、 この場合、 ローアーアームはウィッシュボーン状からなり連結アーム 1 0はローアーアームの両側のアームに連結されるようにする。  In this case, the lower arm has a wishbone shape and the connecting arm 10 is connected to the arms on both sides of the lower arm.
第 5図は本発明のィン イール乇一夕一型の電気自動車のサスペンション機構 の緩衝装置に連結する他の連結アームの構造を示す側面図である。  FIG. 5 is a side view showing the structure of another connecting arm connected to the shock absorber of the suspension mechanism of the electric vehicle of the present invention.
この図に示すように、 ィンホイールモータ一の外側ケースを迂回するように配 置される略 L字形の連結アーム 2 2は、 車両側ジョイント 2 0が口一ァ一アーム 2 1と共通であるとともに、 アームの途中まではローアーアーム 2 1と共通であ るが、 途中から分岐してアーム 2 2 Aとなり、 その先端が緩衝装置の先端と接続 されるジョイント 2 3に結合されるように構成されている。  As shown in this figure, a substantially L-shaped connecting arm 22 arranged so as to bypass the outer case of the in-wheel motor 1 has a vehicle side joint 20 common to the mouth arm 21. At the same time, it is common to the lower arm 21 up to the middle of the arm, but branches off from the middle to become the arm 22A, and its tip is connected to the joint 23 connected to the tip of the shock absorber. It is configured.
この場合、 口一ァ一アーム 2 1はウィッシュボーン状からなり、 連結ァ一厶 2 2はローアーアーム 2 1の両側のアームに連結されるようにする。  In this case, the mouth arm 21 has a wishbone shape, and the connecting arm 22 is connected to the arms on both sides of the lower arm 21.
なお、 本発明は上記実施例に限定されるものではなく、 本発明の趣旨に基づい て種々の変形が可能であり、 これらを本発明の範囲から排除するものではない。 以上、 詳細に説明したように、 本発明によれば、 以下のような効果を奏するこ とができる。 '  It should be noted that the present invention is not limited to the above embodiments, and various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention. As described above, according to the present invention, the following effects can be obtained. '
(A)緩衝装置の配置に当たり、 インホイールモータ一が車輪の車体側に突出 するように配置されていても、 特別なスペースを要することなく、 しかも、 十分 なダンバ一ストロークを確保することができる。  (A) When arranging the shock absorber, even if the in-wheel motor is arranged so as to protrude toward the vehicle body side of the wheel, a special damper stroke can be secured without requiring any special space. .
( B ) ィンホイ一ルモ一ターの車体側への張り出しを考慮することが不要であ るため、 大きい出力のィンホイールモーターを搭載することができる。 産業上の利用可能性 (B) Since it is not necessary to consider the overhang of the in-wheel motor toward the vehicle body, a high-output in-wheel motor can be mounted. Industrial applicability
本発明のサスペンション機構は、 特に、 インホイールモーターを具備する電気 自動車のシャーシ設計に大きな自由度を与えることができ、 省スペース化が必須 となる電気自動車のサスペンション機構として好適である。  INDUSTRIAL APPLICABILITY The suspension mechanism of the present invention is particularly suitable as a suspension mechanism of an electric vehicle that requires a large degree of freedom in designing a chassis of an electric vehicle having an in-wheel motor and requires space saving.

Claims

請 求 の 範 囲 The scope of the claims
1 . 1.
( a ) 駆動用モータ一を車輪の車体側に突出するように組み込んだィンホイール モ―ね―  (a) An in-wheel motor that incorporates a drive motor so that it protrudes toward the vehicle body from the wheels
(b ) 一端が前記インホイールモーターの下部にジョイント結合され、 他端が車 体側に軸支された口一ァ一アームと、 (b) a mouth arm having one end jointly connected to a lower portion of the in-wheel motor and the other end pivotally supported on the vehicle body side;
( c ) 一端が前記インホイールモーターの上部にジョイント結合され、 他端が車 体側に軸支されたアッパーアームと、  (c) an upper arm having one end jointed to the upper portion of the in-wheel motor and the other end pivotally supported on the vehicle body side;
( d ) 前記インホイ一ルモ一夕一の車体に対する上下振動を減衰させるパネとダ ンパ一からなる緩衝装置と、  (d) a damping device comprising a panel and a damper for damping vertical vibration of the in-wheel vehicle with respect to the vehicle body,
( e ) 前記インホイールモータ一の外側ケースを迂回する略 L字形の連結アーム とを備え、  (e) a substantially L-shaped connecting arm that bypasses the outer case of the in-wheel motor.
( f ) 前記略 L字形の連結ァ―ムの一端を前記口一ァ一アームの車輪側ジョイン ト部に固定し、 その上方に延びる他端と車体側との間に、 前記緩衝装置を横方向 に配置することを特徴とする電気自動車のサスペンション機構。  (f) One end of the substantially L-shaped connecting arm is fixed to a wheel-side joint of the mouth arm, and the shock absorber is laterally disposed between the other end extending upward and the vehicle body side. A suspension mechanism for an electric vehicle, wherein the suspension mechanism is arranged in a direction.
2. 請求項 1記載の電気自動車のサスペンション機構において、 前記略 L字形の 連結ァ一ムは、 該略 L字形の連結アームの曲線部分が前記ィンホイ一ルモ一夕一 との干渉を避けるため股状に開かれ、 その両端で一体化された形状を有すること を特徴とする電気自動車のサスペンション機構。  2. The suspension mechanism for an electric vehicle according to claim 1, wherein the substantially L-shaped connecting arm has a crotch portion to prevent a curved portion of the substantially L-shaped connecting arm from interfering with the inner wheel. A suspension mechanism for an electric vehicle, wherein the suspension mechanism is opened in a shape and has an integrated shape at both ends.
3 . 請求項 1記載の電気自動車のサスペンション機構において、 前記略 L字形の 連結アームの下部は前記口一ァ一アームの一部と共通に形成することを特徴とす る電気自動車のサスペンション機構。  3. The suspension mechanism for an electric vehicle according to claim 1, wherein a lower portion of the substantially L-shaped connecting arm is formed in common with a part of the mouth arm.
4 . 請求項 1又は 3記載の電気自動車のサスペンション機構において、 前記口一 ァ一アームはウイッシュボーン状からなり、 前記連結アームは前記口一ァ一ァ一 ムの片側のアームに連結されることを特徴とする電気自動車のサスペンション機 構。  4. The suspension mechanism for an electric vehicle according to claim 1, wherein the mouth arm has a wishbone shape, and the connecting arm is connected to one arm of the mouth arm. An electric vehicle suspension mechanism characterized by the following:
5 . 請求項 1又は 3記載の電気自動車のサスペンション機構において、 前記口一 ァーアームはウイッシュボ一ン状からなり、 前記連結アームは前記ローアーァー ムの両側のアームに連結されることを特徵とする電気自動車のサスペンション機 5. The suspension mechanism for an electric vehicle according to claim 1, wherein the lower arm has a wishbone shape, and the connecting arm has a lower arm. Suspension machine for electric vehicles, which is connected to the arms on both sides of the vehicle
6 . 請求項 2記載の電気自動車のサスペンション機構において、 前記ローアーァ —ムはウイッシュボーン状からなり、 前記連結ァ一厶は前記ローアーアームの両 側のアームに連結されることを特徴とする電気自動車のサスペンション機構。 6. The electric vehicle according to claim 2, wherein the lower arm has a wishbone shape, and the connecting arm is connected to both arms of the lower arm. Suspension mechanism.
PCT/JP2001/011433 2001-02-15 2001-12-26 Suspension mechanism of electric car WO2002064386A1 (en)

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JP6369166B2 (en) * 2014-06-27 2018-08-08 日産自動車株式会社 Vehicle suspension system
CN105459737A (en) * 2015-12-11 2016-04-06 淄博大创自动化科技有限公司 Agricultural seeder with comprehensive vibration damping travelling mechanism
JP7103173B2 (en) * 2018-11-05 2022-07-20 トヨタ自動車株式会社 Suspension device, vehicle

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