JPH04297336A - Four-wheel drive power distributor - Google Patents
Four-wheel drive power distributorInfo
- Publication number
- JPH04297336A JPH04297336A JP8611191A JP8611191A JPH04297336A JP H04297336 A JPH04297336 A JP H04297336A JP 8611191 A JP8611191 A JP 8611191A JP 8611191 A JP8611191 A JP 8611191A JP H04297336 A JPH04297336 A JP H04297336A
- Authority
- JP
- Japan
- Prior art keywords
- torque
- gear
- planetary gear
- rear wheels
- wheel drive
- 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
Links
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
- Retarders (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、特にエンジントルクを
自動車の前後輪に好適に分配し得る駆動力分配装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving force distribution device capable of suitably distributing engine torque to front and rear wheels of an automobile.
【０００２】0002
【従来の技術】従来、エンジントルクを前後輪に分配し
て走行するようにした４輪駆動車には、駆動力を前後輪
に分配する形式に於いて種々の構造のものがあり、例え
ば特開昭６２−２６５０２８号公報には、後輪駆動を主
として４輪駆動を行うようにしたものが開示されている
。上記４輪駆動車では、走行条件に応じて前後輪に対す
る駆動力分配比が可変となるように制御されており、後
輪駆動軸から多板クラッチを介して前輪に可変駆動トル
クが伝達される。[Prior Art] Conventionally, four-wheel drive vehicles that drive by distributing engine torque between the front and rear wheels have various structures for distributing the driving force between the front and rear wheels. Japanese Patent Publication No. 62-265028 discloses a vehicle in which four-wheel drive is mainly performed instead of rear-wheel drive. In the four-wheel drive vehicle mentioned above, the drive power distribution ratio between the front and rear wheels is controlled to be variable depending on the driving conditions, and variable drive torque is transmitted from the rear wheel drive shaft to the front wheels via a multi-plate clutch. .
【０００３】しかしながら、上記構造のものでは、前輪
に駆動トルクを取り出すためのトランスファが必要であ
り、また上記多板クラッチのインナクラッチ及びアウタ
クラッチ共互いに回転している。そのため、構造が複雑
であり、大型化しかつ装置の重量が増大し易いという問
題があった。However, the structure described above requires a transfer for extracting driving torque to the front wheels, and the inner clutch and outer clutch of the multi-disc clutch rotate with respect to each other. Therefore, there are problems in that the structure is complicated, the size of the device increases, and the weight of the device tends to increase.
【０００４】0004
【発明が解決しようとする課題】このような従来技術の
問題点に鑑み、本発明の主な目的は、車両の前後輪に駆
動力を分配し得る装置であって、小型化かつ軽量化する
べく改良された前後輪駆動力分配装置を提供することに
ある。[Problems to be Solved by the Invention] In view of the problems of the prior art, the main object of the present invention is to provide a device capable of distributing driving force to the front and rear wheels of a vehicle, which is compact and lightweight. An object of the present invention is to provide a front and rear wheel drive force distribution device that is improved as much as possible.
【０００５】[0005]
【課題を解決するための手段】このような目的は、本発
明によれば、駆動源に連結されかつ前後輪のいずれか一
方にトルク伝達可能に連結された環状部材と、前記環状
部材の内方に設けられた３部材遊星歯車式歯車装置とを
有し、前記歯車装置の第１の部材が前記環状部材に一体
的に設けられ、前記歯車装置の第２の部材が前記前後輪
のいずれか他方に連結され、前記歯車装置の第３の部材
と固定部との間にクラッチ手段が設けられていることを
特徴とする前後輪駆動力分配装置を提供することにより
達成される。特に、前記クラッチ手段が、前記歯車装置
の第３の部材を固定状態と解放状態との間にて調節し得
るように制御されると良い。[Means for Solving the Problems] According to the present invention, an annular member connected to a drive source and capable of transmitting torque to either the front or rear wheels, and an inner part of the annular member are provided. a three-member planetary gear set provided on one of the front and rear wheels; a first member of the gear set is integrally provided with the annular member; and a second member of the gear set is provided on either of the front and rear wheels. This is achieved by providing a front and rear wheel drive force distribution device, characterized in that a clutch means is provided between the third member of the gear device and the fixed portion. In particular, the clutch means may be controlled in such a way that the third member of the gearing can be adjusted between a locked state and a released state.
【０００６】[0006]
【作用】このようにすれば、駆動源に連結された環状部
材を介して前後輪の一方にトルクが伝達されると共に、
例えば、遊星歯車装置の第１の部材にリングギアを、そ
の第２の部材にキャリアを、その第３の部材にサンギア
をそれぞれ設定し、サンギアをクラッチ手段を介して固
定部に対して連結することにより、キャリアを介して前
後輪の他方にトルクを伝達し得るため、前後輪それぞれ
に駆動力を伝えることができる。また、サンギアを固定
状態と解放状態との間にて調節することにより、遊星歯
車装置を介して伝達されるトルクを調節することができ
るため、前後輪へのトルク配分が可能である。[Operation] By doing this, torque is transmitted to one of the front and rear wheels via the annular member connected to the drive source, and
For example, a ring gear is set in the first member of the planetary gear device, a carrier is set in the second member, and a sun gear is set in the third member, and the sun gear is connected to the fixed part via a clutch means. As a result, torque can be transmitted to the other of the front and rear wheels via the carrier, so that driving force can be transmitted to each of the front and rear wheels. Further, by adjusting the sun gear between the fixed state and the released state, the torque transmitted via the planetary gear system can be adjusted, so that torque can be distributed to the front and rear wheels.
【０００７】[0007]
【実施例】以下、本発明の好適実施例を添付の図面につ
いて詳しく説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
【０００８】図１は、本発明が適用された自動車の前後
輪への駆動力分配機構を示す模式図である。駆動源とし
てのエンジン１には変速装置であるトランスミッション
２が結合されており、そのトランスミッション２のファ
イナルギア３には、前後輪駆動力分配装置を構成する伝
動装置４の環状体としてのケーシング４ａが、その外周
面に設けられた外部ギア５を噛み合わせて連結されてい
る。FIG. 1 is a schematic diagram showing a mechanism for distributing driving force to front and rear wheels of an automobile to which the present invention is applied. A transmission 2 which is a transmission device is coupled to the engine 1 as a drive source, and a final gear 3 of the transmission 2 has a casing 4a as an annular body of a transmission device 4 constituting a front and rear wheel drive force distribution device. , are connected by meshing with an external gear 5 provided on the outer peripheral surface thereof.
【０００９】伝動装置４のケーシング４ａの外周面には
、更に第２外部ギア７が設けられており、第２外部ギア
７には、ベベルギアを組み合わせてなるギア装置８が噛
み合わされている。ギア装置８にはプロペラ軸９が連結
されており、伝動装置４に伝えられた駆動トルクが、プ
ロペラ軸９から差動装置１０を介して左右の後輪駆動軸
１１ａ・１１ｂに伝えられるようになっている。伝動装
置４内には後記する２列の遊星歯車装置が配設されてお
り、それらを介して左右の前輪に連結された各駆動軸６
ａ・６ｂにもトルクが伝達可能にされている。A second external gear 7 is further provided on the outer peripheral surface of the casing 4a of the transmission device 4, and a gear device 8 consisting of a combination of bevel gears is meshed with the second external gear 7. A propeller shaft 9 is connected to the gear device 8, so that the driving torque transmitted to the transmission device 4 is transmitted from the propeller shaft 9 to the left and right rear wheel drive shafts 11a and 11b via a differential device 10. It has become. Two rows of planetary gears, which will be described later, are arranged within the transmission device 4, and each drive shaft 6 is connected to the left and right front wheels via them.
Torque can also be transmitted to a and 6b.
【００１０】伝動装置４のケーシング４ａ内には、図２
に示されるように、遊星歯車式歯車装置としての第１の
遊星歯車装置１２及び第２の遊星歯車装置１３が同軸的
に配設されている。ケーシング４ａの内周面には第１の
部材としての第１のリングギア１２ａが一体的に形成さ
れており、第１のリングギア１２ａには、第２の部材と
してのキャリア１２ｂに枢着されたプラネタリギアが噛
み合っている。第３の部材としてのサンギア１２ｃは、
ケーシング４ａの外方に設けられたクラッチ手段として
の例えば油圧制御式の多板クラッチ１５のクラッチイン
ナ１５ａに同軸的に結合されている。多板クラッチ１５
のアウタクラッチ１５ｂは、固定部としての例えばトラ
ンスミッション２のケーシングに固定されている。[0010] Inside the casing 4a of the transmission device 4, there is a
As shown in FIG. 1, a first planetary gear device 12 and a second planetary gear device 13 as a planetary gear type gear device are coaxially arranged. A first ring gear 12a as a first member is integrally formed on the inner peripheral surface of the casing 4a, and a carrier 12b as a second member is pivotally connected to the first ring gear 12a. The planetary gears are engaged. The sun gear 12c as the third member is
It is coaxially connected to a clutch inner 15a of, for example, a hydraulically controlled multi-disc clutch 15 as a clutch means provided outside the casing 4a. Multi-plate clutch 15
The outer clutch 15b is fixed to, for example, the casing of the transmission 2 as a fixed part.
【００１１】多板クラッチ１５は、コントローラ１６に
より油圧制御されて、インナクラッチ１５ａ及びアウタ
クラッチ１５ｂ間の連結トルクを調節し得るようにされ
ている。コントローラ１６には、車速センサ１７、車両
の横方向の加速度を検出する横Ｇセンサ１８、スロット
ル開度センサ１９、エンジン回転数センサ２０の各セン
サからの検出信号が入力されており、それらの検出信号
に応じて多板クラッチ１５のクラッチ係合力が制御され
るようになっている。The multi-disc clutch 15 is hydraulically controlled by a controller 16 to adjust the coupling torque between the inner clutch 15a and the outer clutch 15b. The controller 16 receives detection signals from each sensor, including a vehicle speed sensor 17, a lateral G sensor 18 that detects the lateral acceleration of the vehicle, a throttle opening sensor 19, and an engine rotation speed sensor 20. The clutch engagement force of the multi-disc clutch 15 is controlled in accordance with the signal.
【００１２】上記伝動装置４に於いて、第１の遊星歯車
装置１２のキャリア１２ｂが第２の遊星歯車装置１３に
向けて軸線方向に沿って延長して形成されており、その
延長遊端部には第２の遊星歯車装置１３の第２のリング
ギア１３ａが一体的に形成されており、第２のリングギ
ア１３ａには第２の遊星歯車装置１３のキャリア１３ｂ
に枢着されたプラネタリギアが噛み合っている。第２の
遊星歯車装置１３のサンギア１３ｃには同軸的に左輪用
駆動軸６ａが結合されており、キャリア１３ｂには同軸
的に右輪用駆動軸６ｂが結合されている。従って、第１
の遊星歯車装置１２のキャリア１２ｂに伝えられたトル
クが第２の遊星歯車装置１３に伝えられて、そのサンギ
ア１３ｃに伝わったトルクが左輪用駆動軸６ａに伝えら
れ、キャリア１３ｂに伝わったトルクが右輪用駆動軸６
ｂに伝えられ、第２の遊星歯車装置１３により前輪の左
右間の差動機構が構成されている。In the transmission device 4, the carrier 12b of the first planetary gear device 12 is formed to extend along the axial direction toward the second planetary gear device 13, and the extended free end portion thereof is formed to extend toward the second planetary gear device 13. A second ring gear 13a of the second planetary gear device 13 is integrally formed with the carrier 13b of the second planetary gear device 13.
The planetary gears pivotally connected to each other are engaged. A left wheel drive shaft 6a is coaxially coupled to the sun gear 13c of the second planetary gear device 13, and a right wheel drive shaft 6b is coaxially coupled to the carrier 13b. Therefore, the first
The torque transmitted to the carrier 12b of the planetary gear unit 12 is transmitted to the second planetary gear unit 13, the torque transmitted to the sun gear 13c is transmitted to the left wheel drive shaft 6a, and the torque transmitted to the carrier 13b is transmitted to the second planetary gear unit 13. Right wheel drive shaft 6
b, and the second planetary gear unit 13 constitutes a differential mechanism between the left and right front wheels.
【００１３】このようにして構成された伝動装置４では
、エンジン１の駆動トルクは、前記したようにファイナ
ルギア３から外部ギア５即ち伝動装置４のケーシング４
ａに伝えられるため、第２外部ギア７を介して後輪駆動
軸１１ａ・１１ｂに伝えられる。そして、コントローラ
１６により油圧を制御して多板クラッチ１５のクラッチ
係合力を発生させることにより、第１の遊星歯車装置１
２のサンギア１２ｃに制動トルクが生じてキャリア１２
ｂが回転して、エンジン１の駆動トルクが前輪駆動軸６
ａ・６ｂ側にも伝えられる。多板クラッチ１５を例えば
デューティ比制御することにより、前輪駆動軸６ａ・６
ｂへの分配トルクを増減でき、走行条件に応じた好適な
４輪駆動を行うことができる。In the transmission device 4 constructed in this manner, the driving torque of the engine 1 is transferred from the final gear 3 to the external gear 5, that is, the casing 4 of the transmission device 4, as described above.
a, and is therefore transmitted to the rear wheel drive shafts 11a and 11b via the second external gear 7. Then, the controller 16 controls the hydraulic pressure to generate the clutch engagement force of the multi-disc clutch 15, thereby controlling the first planetary gear device 1.
Braking torque is generated in the sun gear 12c of the carrier 12.
b rotates, and the driving torque of the engine 1 is applied to the front wheel drive shaft 6.
It is also transmitted to the a and 6b sides. For example, by controlling the duty ratio of the multi-disc clutch 15, the front wheel drive shafts 6a, 6
It is possible to increase/decrease the torque distributed to b, and it is possible to perform suitable four-wheel drive according to the driving conditions.
【００１４】上記した本発明の前後輪駆動力分配装置で
は、遊星歯車装置を用いて駆動力分配機構を構成してお
り、前後分配比を第１の遊星歯車装置１２のサンギア１
２ｃの制動トルクの増減により可変制御できる。従って
、従来例で示したように駆動トルクを直接的にクラッチ
により可変制御する構造のものに比べて、クラッチ容量
を小さくし得るため、装置をコンパクト化かつ軽量化し
得る。In the above-described front and rear wheel drive force distribution device of the present invention, the drive force distribution mechanism is constructed using a planetary gear device, and the front and rear distribution ratio is determined by adjusting the sun gear 1 of the first planetary gear device 12.
Variable control is possible by increasing and decreasing the braking torque in step 2c. Therefore, compared to a structure in which drive torque is directly variably controlled by a clutch as shown in the conventional example, the clutch capacity can be made smaller, and the device can be made more compact and lighter.
【００１５】尚、クラッチ手段として油圧制御多板クラ
ッチを用いたが、電磁クラッチを用いて電流制御を行う
ようにしても良い。また、前輪側の差動装置は、本実施
例では第２の遊星歯車装置１３を用いたが、ベベルギア
を組み合わせた構造のものであっても良い。Although a hydraulically controlled multi-disc clutch is used as the clutch means, an electromagnetic clutch may be used to control the current. Furthermore, although the second planetary gear device 13 is used as the differential device on the front wheel side in this embodiment, it may have a structure in which bevel gears are combined.
【００１６】[0016]
【発明の効果】このように本発明によれば、車両の前後
輪の一方に駆動力を伝達する環状部材内に遊星歯車装置
を設けて、他方に対しては遊星歯車装置を介して駆動力
を分配するようにし、かつ遊星歯車装置の第３の部材と
しての例えばサンギアをクラッチ手段を介して固定部に
連結することにより、前後輪に駆動力を分配できる。ま
た、クラッチを固定状態と解放状態との間にて調節する
ことにより、前後輪のトルク分配比を好適に替えること
ができる。また、遊星歯車装置のサンギアの固定部に対
する連結トルクは比較的小さくて良く、クラッチをコン
パクト化かつ軽量化し得るため、本装置の取付スペース
も小さくて良い等、その効果は極めて大である。As described above, according to the present invention, a planetary gear device is provided within the annular member that transmits driving force to one of the front and rear wheels of a vehicle, and the driving force is transmitted to the other wheel through the planetary gear device. The driving force can be distributed to the front and rear wheels by distributing the driving force to the front and rear wheels, and by connecting, for example, the sun gear as the third member of the planetary gear device to the fixed part via the clutch means. Further, by adjusting the clutch between a fixed state and a released state, the torque distribution ratio between the front and rear wheels can be suitably changed. In addition, the coupling torque to the fixing portion of the sun gear of the planetary gear apparatus can be relatively small, and the clutch can be made compact and lightweight, so the installation space for this device can be small, and the effects are extremely large.
【図１】本発明が適用された自動車に於ける４輪駆動機
構を示す模式図である。FIG. 1 is a schematic diagram showing a four-wheel drive mechanism in an automobile to which the present invention is applied.
【図２】本発明に基づく装置の構造を示す拡大模式図で
ある。FIG. 2 is an enlarged schematic diagram showing the structure of the device according to the invention.
１ エンジン ２ トランスミッション ３ ファイナルギア ４ 伝動装置 ４ａ ケーシング ５ 外部ギア ６ａ・６ｂ 駆動軸 ７ 第２外部ギア ８ ギア装置 ９ プロペラ軸 １０ 差動装置 １１ａ・１１ｂ 後輪駆動軸 １２ 第１の遊星歯車装置 １２ａ リングギア １２ｂ キャリア １２ｃ サンギア １３ 第２の遊星歯車装置 １３ａ リングギア １３ｂ キャリア １３ｃ サンギア １５ 多板クラッチ １５ａ クラッチインナ １５ｂ クラッチアウタ １６ コントローラ １７ 車速センサ １８ 横Ｇセンサ １９ スロットル開度センサ ２０ エンジン回転数センサ 1 Engine 2 Transmission 3 Final Gear 4 Transmission device 4a Casing 5 External gear 6a/6b Drive shaft 7 Second external gear 8 Gear device 9 Propeller shaft 10 Differential device 11a/11b Rear wheel drive shaft 12 First planetary gear device 12a Ring gear 12b Carrier 12c Sangia 13 Second planetary gear device 13a Ring gear 13b Carrier 13c Sangia 15 Multi-plate clutch 15a Clutch inner 15b Clutch outer 16 Controller 17 Vehicle speed sensor 18 Lateral G sensor 19 Throttle opening sensor 20 Engine speed sensor
Claims (2)
方にトルク伝達可能に連結された環状部材と、前記環状
部材の内方に設けられた３部材遊星歯車式歯車装置とを
有し、前記歯車装置の第１の部材が前記環状部材に一体
的に設けられ、前記歯車装置の第２の部材が前記前後輪
のいずれか他方に連結され、前記歯車装置の第３の部材
と固定部との間にクラッチ手段が設けられていることを
特徴とする前後輪駆動力分配装置。Claims: 1. An annular member connected to a drive source and capable of transmitting torque to either front or rear wheels; and a three-member planetary gear system provided inside the annular member. , a first member of the gear device is integrally provided with the annular member, a second member of the gear device is connected to the other of the front and rear wheels, and is fixed to a third member of the gear device. A front and rear wheel drive force distribution device, characterized in that a clutch means is provided between the front and rear wheels.
の部材を固定状態と解放状態との間にて調節し得るよう
に制御されることを特徴とする前後輪駆動力分配装置。2. The clutch means is a third clutch of the gear device.
1. A front and rear wheel drive force distribution device, characterized in that the front and rear wheel drive force distribution device is controlled so as to be able to adjust the member between a fixed state and a released state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3086111A JP3047016B2 (en) | 1991-03-26 | 1991-03-26 | Front and rear wheel drive force distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3086111A JP3047016B2 (en) | 1991-03-26 | 1991-03-26 | Front and rear wheel drive force distribution device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04297336A true JPH04297336A (en) | 1992-10-21 |
| JP3047016B2 JP3047016B2 (en) | 2000-05-29 |
Family
ID=13877594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3086111A Expired - Fee Related JP3047016B2 (en) | 1991-03-26 | 1991-03-26 | Front and rear wheel drive force distribution device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3047016B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101008486B1 (en) * | 2008-06-09 | 2011-01-14 | 주식회사 에이디모터스 | Transmission for electric vehicle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7954619B2 (en) * | 2007-06-01 | 2011-06-07 | Kone Corporation | Load sharing handrail drive apparatus |
| WO2017151693A1 (en) * | 2016-03-01 | 2017-09-08 | Borgwarner Inc. | Rotating multimode clutch module for all wheel drive system |
-
1991
- 1991-03-26 JP JP3086111A patent/JP3047016B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101008486B1 (en) * | 2008-06-09 | 2011-01-14 | 주식회사 에이디모터스 | Transmission for electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3047016B2 (en) | 2000-05-29 |
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