JPS62286833A - Vehicle driving device - Google Patents

Vehicle driving device

Info

Publication number
JPS62286833A
JPS62286833A JP12731686A JP12731686A JPS62286833A JP S62286833 A JPS62286833 A JP S62286833A JP 12731686 A JP12731686 A JP 12731686A JP 12731686 A JP12731686 A JP 12731686A JP S62286833 A JPS62286833 A JP S62286833A
Authority
JP
Japan
Prior art keywords
wheel
constant velocity
velocity joint
vehicle
transmitted
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP12731686A
Other languages
Japanese (ja)
Other versions
JPH0811491B2 (en
Inventor
Kenichi Sakamoto
坂本 研一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JAPAN AUTOM TRANSMISSION CO Ltd
JATCO Corp
Original Assignee
JAPAN AUTOM TRANSMISSION CO Ltd
JATCO Corp
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.)
Filing date
Publication date
Application filed by JAPAN AUTOM TRANSMISSION CO Ltd, JATCO Corp filed Critical JAPAN AUTOM TRANSMISSION CO Ltd
Priority to JP12731686A priority Critical patent/JPH0811491B2/en
Publication of JPS62286833A publication Critical patent/JPS62286833A/en
Publication of JPH0811491B2 publication Critical patent/JPH0811491B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Motor Power Transmission Devices (AREA)
  • Retarders (AREA)

Abstract

PURPOSE:To improve linearity of a vehicle, by a method wherein a drive force, transmitted to a portion on the wheel side having a high crossing angle of a constant velocity joint, is decreased over that transmitted to a portion on the wheel side having a low cross angle. CONSTITUTION:When a vehicle is in a straight running state, a wheel 38 on the left side, rotationally driven through a drive shaft 34 and a constant velocity joint 36, and a wheel 40 on the right side, rotationally driven through a drive shaft 44 and a constant velocity joint 46, are rotated at the same rotation speed. However, a drive force, transmitted to the wheel 38 on the left side through a small sun gear 26, is decreased over that transmitted to the wheel 48 on the right side through a large sun gear 28. This constitution uniformizes a force, trying to change the direction of the wheel 38 on the left side, with a force, trying to change the direction of the wheel 48 on the right side, and enables provision of high linearity.

Description

【発明の詳細な説明】 3、発明の詳細な説明 (イ)産業上の利用分野 本発明は、差動装置、駆動軸などから成る車両駆動装置
に関するものである。
Detailed Description of the Invention 3. Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a vehicle drive device comprising a differential gear, a drive shaft, and the like.

(ロ)従来の技術 従来の車両駆動装置の差動装置としては、例えば機械工
学便覧第15編22頁(日本機械学会績)に示されるも
のかある。このような従来の差動装置は、車両旋回時に
おける左右の車輪の移動距離の相違に応じて左右の車輪
の回転速度を変えながら左右の車輪に等しい駆動力を伝
えるように構成されている。これにより、車両が円滑に
旋回を行うことができる。
(b) Prior Art A conventional differential device for a vehicle drive system is, for example, the one shown in Mechanical Engineering Handbook, Vol. 15, p. 22 (Japan Society of Mechanical Engineers). Such a conventional differential device is configured to transmit equal driving force to the left and right wheels while changing the rotational speed of the left and right wheels in accordance with the difference in travel distance between the left and right wheels when the vehicle turns. This allows the vehicle to turn smoothly.

(ハ)発明が解決しようとする問題点 しかし、エンジン横置きの前輪駆動車の場合のように差
動装置が車両中心線上に配置されない場合には次のよう
な問題か発生する。すなわち、差動装置か車両中心線上
に配置されないため、左右の前輪の各等速ジヨイントの
交角が相違するが、この交角の相違によって左右の車輪
の方向を変えようとする力が左右の車輪について異なっ
た大きさで発生する。この車輪の方向を変えようとする
力は等速ジヨイントの交角に基づいて発生し、交角か大
きいほと大きくなる。このため、車両の直進性か損なわ
れることになる。本発明は、このような問題点を解決す
ることを目的としている。
(c) Problems to be Solved by the Invention However, when the differential gear is not located on the vehicle centerline, as in the case of a front-wheel drive vehicle with a horizontally mounted engine, the following problems occur. In other words, because the differential gear is not located on the vehicle center line, the intersection angles of the constant velocity joints of the left and right front wheels are different, but due to the difference in intersection angles, the force that tries to change the direction of the left and right wheels is applied to the left and right wheels. occur in different sizes. The force that attempts to change the direction of the wheel is generated based on the intersection angle of the constant velocity joint, and increases as the intersection angle increases. As a result, the straight-line performance of the vehicle is impaired. The present invention aims to solve these problems.

(ニ)問題点を解決するための手段 本発明は、差動装置から左右の車輪へ伝達される駆動力
を相違させることにより上記問題点を解決する。すなわ
ち、本発明による車両駆動装置の差動装置は、等速ジヨ
イントの交角の大きい車輪側へ伝達する駆動力が交角の
小さい車輪側に伝達する駆動力よりも小さくなるように
構成されている。
(d) Means for Solving the Problems The present invention solves the above problems by differentiating the driving force transmitted from the differential device to the left and right wheels. That is, the differential device of the vehicle drive system according to the present invention is configured such that the driving force transmitted to the wheel side with a larger intersection angle of the constant velocity joint is smaller than the driving force transmitted to the wheel side with a smaller intersection angle.

(ホ)作用 等速ジヨイントの交角が大きいほど等速ジヨイントの回
転に伴って発生する車輪の方向を変えようとする力が大
きくなる。また、車輪の方向を変えようとする力は駆動
力が大きいほど犬きくなる。従って、等速ジヨイントの
交角か大きい方の車輪へ伝達される駆動力を小さくし、
また等速ジヨイントの交角か小さい方の車輪へ伝達され
る駆動力を犬きくすれば、車輪の方向を変えようとする
力が相殺されて全体としては0となる。これにより、車
両の直進性が向上する。
(E) Action The larger the intersection angle of the constant velocity joints, the greater the force that is generated as the constant velocity joints rotate to change the direction of the wheel. Also, the greater the driving force, the stronger the force that tries to change the direction of the wheels. Therefore, the driving force transmitted to the wheel with the larger intersection angle of the constant velocity joint is reduced,
Furthermore, if the driving force transmitted to the wheel with the smaller intersection angle of the constant velocity joint is increased, the force that attempts to change the direction of the wheel is canceled out and becomes zero as a whole. This improves the straightness of the vehicle.

(へ)実施例 (第1実施例) 第1図に本発明の第1実施例を示す。第1図は平面図で
あり、図中上方が車両の前側である。差動装置10は遊
星歯車式のものであり、ファイナルギア12と一体に回
転するようにダブルピニオン式のキャリア14が形成さ
れている。ファイナルギア12及びキャリア14はベア
リング16及び18によってケーシング20に対して回
転可能に支持されている。キャリア14には2つのピニ
オンギア22及び24が回転可能に支持されている。ピ
ニオンギア22とピニオンギア24とは同一仕様の歯車
であり、互いにかみ合っている。
(F) Example (First Example) FIG. 1 shows a first example of the present invention. FIG. 1 is a plan view, and the upper side of the figure is the front side of the vehicle. The differential device 10 is of a planetary gear type, and a double pinion type carrier 14 is formed to rotate together with the final gear 12. Final gear 12 and carrier 14 are rotatably supported by bearings 16 and 18 relative to casing 20. Two pinion gears 22 and 24 are rotatably supported on the carrier 14. The pinion gear 22 and the pinion gear 24 are gears having the same specifications and mesh with each other.

ただし、差動装置10の中心軸に対する回転半径はピニ
オンギア24の方がピニオンギア22よりも大きくなる
ように配置されている。ピニオンギア22とかみ合うよ
うにサンギア26か設けられており、またど二オンギア
24とかみ合うようにサンギア28が設けられている。
However, the pinion gear 24 is arranged so that the rotation radius with respect to the central axis of the differential device 10 is larger than that of the pinion gear 22. A sun gear 26 is provided to mesh with the pinion gear 22, and a sun gear 28 is provided to mesh with the second gear 24.

サンギア26の直径はサンギア28の直径よりも小さく
なっている。サンギア26と一体に回転する軸30が等
速ジヨイント32を介して駆動軸34と連結されており
、駆動軸34は更に等速ジヨイント36を介して左側車
輪38と連結されている。また、サンギア28と一体に
回転する軸40は等速ジヨイント42を介して駆動1t
h44と連結され、更に駆動軸44は等速ジヨイント4
6を介して右側車輪48と連結されている。等速ジヨイ
ント36の交角をθ、とし、等速ジヨイント46の交角
をORとしたとき、サンギア26の直径りしとサンギア
28の直径り、どの関係は DL、/D。
The diameter of sun gear 26 is smaller than the diameter of sun gear 28. A shaft 30 that rotates together with the sun gear 26 is connected to a drive shaft 34 via a constant velocity joint 32, and the drive shaft 34 is further coupled to a left wheel 38 via a constant velocity joint 36. Further, a shaft 40 that rotates together with the sun gear 28 is driven by a constant velocity joint 42.
h44, and the drive shaft 44 is connected to the constant velocity joint 4.
It is connected to the right wheel 48 via 6. When the intersection angle of the constant velocity joint 36 is θ and the intersection angle of the constant velocity joint 46 is OR, what is the relationship between the diameter of the sun gear 26 and the diameter of the sun gear 28?DL, /D.

=sin(θn / 2 ) / s i n (θL
/2)となるようにしである。
= sin(θn/2)/sin(θL
/2).

次にこの実施例の作用について説明する。図示してない
エンジンの回転力か図示してない変速機を介してファイ
ナルギア12に伝達される。車両が直進している状態で
はピニオンギア22、ピニオンギア24、サンギア26
及びサンギア28は相対回転をすることなく、ファイナ
ルギア12と一体に回転する。従って、軸30、等速ジ
ヨイント32、駆動軸34及び等速ジヨイント36を介
して回転駆動される左側車輪38と、lllIh40、
等速ジヨイント42、駆動軸44及び等速ジヨイント4
6を介して回転駆動される右側車輪48とは同一回転速
度で回転する。しかし、径の小さいサンギア26を介し
て左側車輪38に伝達される駆動力は、径の大きいサン
ギア28を介して右側車輪48に伝達される駆動力より
も小さくなっている。これにより、左側車輪38の方向
を変えようとする力FLと、右側車輪48の方向を変え
ようとする力F、とが等しくなり、車両の高い直進性が
得られる。すなわち、 FL =2xTLXS i n (θL/2)F R=
 2 X T RX S l n (θn/2)である
。ただし、TLは左側車輪38側の駆動力であり、また
Tnは右側車輪48側の駆動力である。TLとTRとの
関係はサンギア26の直径DLとサンギア28の直径D
9との関係によって決定ぎわ、 T R/ T L = D R/ D Lであり、DR
,Dしとθし、θ8とは前述のような関係に設定しであ
るので、結局F L= F Rとなる。従って、左側車
輪38の方向を変えようとする力FLと、右側車輪48
の方向を変えようとする力F□とは互いに打ち消し合い
、全体としての車輪の方向を変えようとする力はOとな
る。
Next, the operation of this embodiment will be explained. The rotational force of an engine (not shown) is transmitted to the final gear 12 via a transmission (not shown). When the vehicle is traveling straight, pinion gear 22, pinion gear 24, and sun gear 26
The sun gear 28 rotates integrally with the final gear 12 without relative rotation. Therefore, the left wheel 38 that is rotationally driven via the shaft 30, the constant velocity joint 32, the drive shaft 34, and the constant velocity joint 36,
Constant velocity joint 42, drive shaft 44 and constant velocity joint 4
The right wheel 48 rotates at the same rotational speed as the right wheel 48 which is rotationally driven through the wheel 6. However, the driving force transmitted to the left wheel 38 via the sun gear 26 having a smaller diameter is smaller than the driving force transmitted to the right wheel 48 via the sun gear 28 having a larger diameter. As a result, the force FL that tries to change the direction of the left wheel 38 and the force F that tries to change the direction of the right wheel 48 become equal, and high straightness of the vehicle can be obtained. That is, FL = 2xTLXSi n (θL/2)FR=
2 X T RX S l n (θn/2). However, TL is the driving force on the left wheel 38 side, and Tn is the driving force on the right wheel 48 side. The relationship between TL and TR is the diameter DL of sun gear 26 and the diameter D of sun gear 28.
9, T R/TL = DR/DL, and DR
, D and θ, and θ8 are set in the relationship as described above, so that F L=F R after all. Therefore, the force FL that tries to change the direction of the left wheel 38 and the right wheel 48
The force F□ that tries to change the direction of the wheel cancels each other out, and the total force that tries to change the direction of the wheel becomes O.

これにより、上述のように車両の直進性が向上する。This improves the straightness of the vehicle as described above.

(第2実施例) 第2図に本発明の第2実施例を示す。この第2実施例は
ファイナルギア12と一体に回転するようにインターナ
ルギア50を設け、互いにかみ合うピニオンギア22及
び24を支持するキャリア14は輸40と連結し、また
サンギア26は軸30と連結したものである。ビニオン
ギア22とビニオンギア24とは互いにかみ合い、ビニ
オンギア24はインターナルギア50とかみ合っており
、またビニオンギア22はサンギア26と力)み合って
いる。サンギア26の直径Dsとインターナルギア50
の直径D1とは、 2 ・ D  s / D 。
(Second Embodiment) FIG. 2 shows a second embodiment of the present invention. In this second embodiment, an internal gear 50 is provided so as to rotate together with the final gear 12, a carrier 14 supporting mutually meshing pinion gears 22 and 24 is connected to the shaft 40, and a sun gear 26 is connected to the shaft 30. It is something. The pinion gear 22 and the pinion gear 24 mesh with each other, the pinion gear 24 meshes with the internal gear 50, and the pinion gear 22 meshes with the sun gear 26. Diameter Ds of sun gear 26 and internal gear 50
The diameter D1 is 2.Ds/D.

=sin(θ1.I /2)/5in(θL /2)と
いう関係にしである。この第2実施例においても軸40
に伝達される駆動力と軸30に伝達される駆動力とが所
定の関係となり、上述の第1実施例と同様の作用を得る
ことができる。この第2実施例の方か差動装置10の軸
方向の寸法が小さくなっている。
= sin(θ1.I/2)/5in(θL/2). In this second embodiment as well, the shaft 40
The driving force transmitted to the shaft 30 and the driving force transmitted to the shaft 30 have a predetermined relationship, and the same effect as in the first embodiment described above can be obtained. In this second embodiment, the axial dimension of the differential gear 10 is smaller.

(ト)発明の詳細 な説明してきたように、本発明によると、差動装置から
左右車輪へ伝達される駆動力を相違させるようにしたの
で、等速ジヨイントの交角の相違による車輪の方向を変
えようとする力を打ち消すことかでき、車両の直進性が
向上する。
(G) As described in detail, according to the present invention, the driving force transmitted from the differential device to the left and right wheels is different, so that the direction of the wheels due to the difference in the intersection angle of the constant velocity joints can be changed. It is possible to cancel out the forces that try to change the direction, improving the straightness of the vehicle.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の第1実施例を示す図、第2図は本発明
の第2実施例を示す図である。 1o・・・差動装置、32,36,42゜46・・・等
速ジヨイント、34.44・・・駆動軸、38・・・″
石側車輪、48・・・右側車輪。
FIG. 1 is a diagram showing a first embodiment of the invention, and FIG. 2 is a diagram showing a second embodiment of the invention. 1o... Differential device, 32, 36, 42° 46... Constant velocity joint, 34.44... Drive shaft, 38...''
Stone side wheel, 48...right side wheel.

Claims (1)

【特許請求の範囲】 差動装置と、差動装置からの駆動力を等速ジョイントを
介して左右の車輪にそれぞれ伝達する左右の駆動軸と、
を有する車両駆動装置であって、一方の車輪側の等速ジ
ョイントの交角が他方の車輪側の等速ジョイントの交角
よりも大きいものにおいて、 上記差動装置は、上記一方の車輪へ伝達する駆動力が上
記他方の車輪に伝達する駆動力よりも小さくなるように
構成されていることを特徴とする車両駆動装置。
[Claims] A differential device, left and right drive shafts that respectively transmit driving force from the differential device to left and right wheels via constant velocity joints,
In a vehicle drive device having a constant velocity joint on one wheel side, the intersection angle of the constant velocity joint on the other wheel side is larger than the intersection angle of the constant velocity joint on the other wheel side, the differential device is configured to transmit drive to the one wheel. A vehicle drive device characterized in that the vehicle drive device is configured such that the driving force transmitted to the other wheel is smaller than the driving force transmitted to the other wheel.
JP12731686A 1986-06-03 1986-06-03 Vehicle drive Expired - Lifetime JPH0811491B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12731686A JPH0811491B2 (en) 1986-06-03 1986-06-03 Vehicle drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12731686A JPH0811491B2 (en) 1986-06-03 1986-06-03 Vehicle drive

Publications (2)

Publication Number Publication Date
JPS62286833A true JPS62286833A (en) 1987-12-12
JPH0811491B2 JPH0811491B2 (en) 1996-02-07

Family

ID=14956922

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12731686A Expired - Lifetime JPH0811491B2 (en) 1986-06-03 1986-06-03 Vehicle drive

Country Status (1)

Country Link
JP (1) JPH0811491B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10119596A (en) * 1996-10-16 1998-05-12 Linde Ag Drive axle
JPH1191382A (en) * 1997-09-18 1999-04-06 Linde Ag Driving axle
CN114008341A (en) * 2019-07-05 2022-02-01 Ntn株式会社 Power transmission mechanism and vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10119596A (en) * 1996-10-16 1998-05-12 Linde Ag Drive axle
JPH1191382A (en) * 1997-09-18 1999-04-06 Linde Ag Driving axle
CN114008341A (en) * 2019-07-05 2022-02-01 Ntn株式会社 Power transmission mechanism and vehicle

Also Published As

Publication number Publication date
JPH0811491B2 (en) 1996-02-07

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