JP2780396B2 - Front and rear wheel drive motorcycle drive system - Google Patents
Front and rear wheel drive motorcycle drive systemInfo
- Publication number
- JP2780396B2 JP2780396B2 JP30664389A JP30664389A JP2780396B2 JP 2780396 B2 JP2780396 B2 JP 2780396B2 JP 30664389 A JP30664389 A JP 30664389A JP 30664389 A JP30664389 A JP 30664389A JP 2780396 B2 JP2780396 B2 JP 2780396B2
- Authority
- JP
- Japan
- Prior art keywords
- centrifugal
- clutch
- start clutch
- rear wheel
- wheel
- 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.)
- Expired - Fee Related
Links
Landscapes
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、前後輪駆動自動二輪車の駆動装置に関す
る。Description: TECHNICAL FIELD The present invention relates to a drive device for a front and rear wheel drive motorcycle.
エンジンの駆動力を前後に分配し、前後輪を駆動する
ようにした自動二輪車がある。この種のものでは片側に
滑りクラッチを連結し、前輪と後輪の操舵による回転差
を滑りクラッチで吸収するようにしている。例えば、実
開昭58−170297号公報、特開昭58−206477号公報参照。There is a motorcycle in which the driving force of an engine is distributed back and forth to drive the front and rear wheels. In this type, a slip clutch is connected to one side so that a difference in rotation caused by steering of the front wheels and the rear wheels is absorbed by the slip clutch. For example, see Japanese Utility Model Application Laid-Open No. 58-170297 and Japanese Patent Application Laid-Open No. 58-206477.
前後輪を駆動する自動二輪車では、路面が柔かい抵抗
係数が低い場所や、上り坂で前輪の荷重が少くなるよう
な場著で、発進時に前輪が先に回転を始めて滑ったり、
ハンドルが前輪の回転方向に取られたりして安定性が悪
くなる不都合がある。In motorcycles that drive the front and rear wheels, the road surface is soft where the resistance coefficient is low, or when the load on the front wheel is small on an uphill, the front wheel starts rotating first and slips when starting up,
There is an inconvenience that stability is deteriorated due to the steering wheel being taken in the rotation direction of the front wheel.
この発明は、かかる点に鑑み、前輪側の発進クラッチ
の伝達トルクを後輪側の発進クラッチの伝達トルクより
少くして、後輪側から駆動を始めて発進し、スタート時
に前輪が滑ったりハンドリングが悪くなる不都合を解消
できる前後輪駆動自動二輪車の駆動装置を得ることを目
的とする。In view of this, the present invention reduces the transmission torque of the front-wheel start clutch to less than the transmission torque of the rear-wheel start clutch, starts driving from the rear wheel side, starts the vehicle, and the front wheel slips or starts handling at the start. It is an object of the present invention to provide a drive device for a front-rear wheel drive motorcycle that can solve the inconvenience of the vehicle.
上記目的を達成するために、この発明の前後輪駆動自
動二輪車の駆動装置は、エンジンで第一無段ベルト変速
機と第一遠心式発進クラッチを介して後輪を駆動し、エ
ンジンで第二無段ベルト変速機と第二遠心式発進クラッ
チを介して前輪を駆動するようにし、前輪側の第二遠心
式発進クラッチの遠心クラッチシューを後輪側の第一遠
心式発進クラッチの遠心クラッチシューよりも軽くして
前輪側の第二遠心式発進クラッチの伝達トルクを少くす
るようにしたことにある。In order to achieve the above object, a drive device for a front-rear wheel drive motorcycle according to the present invention drives a rear wheel through a first continuously variable belt transmission and a first centrifugal start clutch by an engine, and drives a rear wheel by an engine. The front wheels are driven through a continuously variable belt transmission and a second centrifugal start clutch, and the centrifugal clutch shoes of the front wheel side second centrifugal start clutch are replaced with the centrifugal clutch shoes of the rear wheel side first centrifugal start clutch. This is to reduce the transmission torque of the second centrifugal start clutch on the front wheel side.
前輪側の第二遠心式発進クラッチの伝達トルクを後輪
側の第一遠心式発進クラッチよりも少くしてあるので、
エンジンの回転数を上げて行くと、第一遠心式発進クラ
ッチが先にタイトして後輪が駆動を始め、続いて少し遅
れて前輪側の第二遠心式発進クラッチがタイトして前輪
も駆動される。このため、発進時に前輪が先に駆動され
始めることがなく、前輪が滑り回したり、ハンドルが取
られるようなことがなくなり、安定走行ができる。Since the transmission torque of the front wheel side second centrifugal start clutch is smaller than that of the rear wheel side first centrifugal start clutch,
As the engine speed increased, the first centrifugal start clutch tightened first and the rear wheels started to drive, and then with a slight delay, the second centrifugal start clutch on the front wheel side became tight and the front wheels also driven Is done. For this reason, the front wheels do not start to be driven first at the time of start, and the front wheels do not slip around or the steering wheel is not taken, so that stable running can be achieved.
以下、本発明の実施例を図面によって説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
エンジン１のクランク軸２に、第一無段ベルト変速機
３を連結し、その後側に第一遠心式発進クラッチ４を連
結する。更に、歯車減速機５とチエン６を介して後輪７
を連結する。一方、クランク軸２に、第二無段ベルト変
速機８を連結し、その後側に第二遠心式発進クラッチ９
を連結する。更に歯車減速機10、チエン11、ユニバーサ
ルジョイント12、チエン13、チエン14を介して前輪15を
連結する。第一無段ベルト変速機３及び第二無段ベルト
変速機８は、回転の上昇と共に、ベルトを巻掛けている
プーリーの径を遠心ウエイトで変えて増速するものであ
る。第一遠心式発進クラッチ４と第二遠心式発進クラッ
チ９は、同一の構造で、駆動側にバネで内側に引張った
遠心クラッチシュー16が外側に回動できるように軸着し
てあり、回転が上昇すると遠心クラッチシュー16がバネ
に抗して外側に拡がりハウジング17に押圧されて回転が
伝達される。そして、前輪15側の第二遠心式発進クラッ
チ９の遠心クラッチシュー16の重量を、後輪７側の第一
遠心式発進クラッチ４の遠心クラッチシュー16の重さよ
りも軽くする。これによって、第５図に示すように、後
輪７側の第一遠心式発進クラッチ３は、Ａで接続を始め
Ｂでタイトする。又、前輪15側の第二遠心式発進クラッ
チ９は、Ｃで接続を始めＤでタイトする。このため、後
輪７が先に駆動され、始めて発進が始り、このとき前輪
側も少しのトルクが加っており、少し遅れて前輪15が駆
動される。発進を完了し、更にエンジン１の回転を上昇
すると、エンジン１の回転上昇と、第一無段ベルト変速
機３と第二無段ベルト変速機８の増速によって、走行速
度を速くすることができる。A first continuously variable belt transmission 3 is connected to the crankshaft 2 of the engine 1, and a first centrifugal start clutch 4 is connected to the rear side thereof. Further, a rear wheel 7 is connected via a gear reducer 5 and a chain 6.
Concatenate. On the other hand, a second continuously variable belt transmission 8 is connected to the crankshaft 2, and a second centrifugal start clutch 9
Concatenate. Further, a front wheel 15 is connected via a gear reducer 10, a chain 11, a universal joint 12, a chain 13, and a chain 14. The first continuously variable belt transmission 3 and the second continuously variable belt transmission 8 increase the speed by changing the diameter of the pulley around which the belt is wound with a centrifugal weight as the rotation increases. The first centrifugal start clutch 4 and the second centrifugal start clutch 9 have the same structure, and are axially mounted on the drive side so that the centrifugal clutch shoe 16 pulled inward by a spring can rotate outward. Rises, the centrifugal clutch shoe 16 spreads outward against the spring and is pressed by the housing 17 to transmit the rotation. Then, the weight of the centrifugal clutch shoe 16 of the second centrifugal start clutch 9 on the front wheel 15 side is made smaller than the weight of the centrifugal clutch shoe 16 of the first centrifugal start clutch 4 on the rear wheel 7 side. Thereby, as shown in FIG. 5, the first centrifugal start clutch 3 on the rear wheel 7 side starts connection at A and tightens at B. Further, the second centrifugal start clutch 9 on the front wheel 15 side starts connection at C and tightens at D. For this reason, the rear wheel 7 is driven first, and the vehicle starts to start for the first time. At this time, a small torque is also applied to the front wheel side, and the front wheel 15 is driven a little later. When the start is completed and the rotation of the engine 1 is further increased, the running speed can be increased by increasing the rotation of the engine 1 and increasing the speed of the first continuously variable belt transmission 3 and the second continuously variable belt transmission 8. it can.
以上説明したように、この発明は、上述のように構成
したので、前輪側の第二遠心式発進クラッチの伝達トル
クを後輪側の第一遠心式発進クラッチの伝達トルクより
小さくなるように設定したので、発進時に前輪が先に回
転を始めることがなく、発進時に前輪が滑り回りした
り、ハンドリングが悪くなることがなくなる。そして、
前後輪が有効なトルクで、バランスよく駆動されて発進
がスムースにできる。As described above, since the present invention is configured as described above, the transmission torque of the front wheel-side second centrifugal start clutch is set to be smaller than the transmission torque of the rear wheel-side first centrifugal start clutch. Therefore, the front wheel does not start rotating first at the time of starting, and the front wheel does not slip around at the time of starting, and handling is not deteriorated. And
The front and rear wheels are driven in a well-balanced manner with effective torque and can start smoothly.
図は本発明の一実施例を示し、 第１図は駆動部分の展開縦断平面図、 第２図は同側面図、 第３図は全体側面図、 第４図は同平面図、 第５図は遠心式発進クラッチの接続特性図、 である。 １……エンジン、３……第一無段ベルト変速機、４……
第一遠心式発進クラッチ、７……後輪、８……第二無段
ベルト変速機、９……第二遠心式発進クラッチ、15……
前輪、16……遠心クラッチシュー。FIG. 1 shows an embodiment of the present invention. FIG. 1 is a developed vertical sectional view of a driving portion, FIG. 2 is a side view thereof, FIG. 3 is an overall side view, FIG. Is a connection characteristic diagram of the centrifugal start clutch. 1 ... engine, 3 ... first continuously variable belt transmission, 4 ...
First centrifugal start clutch, 7 ... Rear wheel, 8 ... Second continuously variable belt transmission, 9 ... Second centrifugal start clutch, 15 ...
Front wheel, 16 centrifugal clutch shoe.
Claims (1)
心式発進クラッチを介して後輪を駆動し、エンジンで第
二無段ベルト変速機と第二遠心式発進クラッチを介して
前輪を駆動するようにし、前輪側の第二遠心式発進クラ
ッチの遠心クラッチシューを後輪側の第一遠心式発進ク
ラッチの遠心クラッチシューよりも軽くして前輪側の第
二遠心式発進クラッチの伝達トルクを少くするようにし
たことを特徴とする前後輪駆動自動二輪車の駆動装置。An engine drives rear wheels through a first continuously variable belt transmission and a first centrifugal start clutch, and an engine drives front wheels through a second continuously variable belt transmission and a second centrifugal start clutch. , And the centrifugal clutch shoe of the front wheel side second centrifugal start clutch is made lighter than the centrifugal clutch shoe of the rear wheel side first centrifugal start clutch to transmit the front wheel side second centrifugal start clutch. A drive device for a front-rear wheel drive motorcycle characterized in that torque is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30664389A JP2780396B2 (en) | 1989-11-28 | 1989-11-28 | Front and rear wheel drive motorcycle drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30664389A JP2780396B2 (en) | 1989-11-28 | 1989-11-28 | Front and rear wheel drive motorcycle drive system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03167090A JPH03167090A (en) | 1991-07-18 |
| JP2780396B2 true JP2780396B2 (en) | 1998-07-30 |
Family
ID=17959572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30664389A Expired - Fee Related JP2780396B2 (en) | 1989-11-28 | 1989-11-28 | Front and rear wheel drive motorcycle drive system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2780396B2 (en) |
-
1989
- 1989-11-28 JP JP30664389A patent/JP2780396B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03167090A (en) | 1991-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |