JP2780397B2 - Front and rear wheel drive motorcycle drive system - Google Patents
Front and rear wheel drive motorcycle drive systemInfo
- Publication number
- JP2780397B2 JP2780397B2 JP1306644A JP30664489A JP2780397B2 JP 2780397 B2 JP2780397 B2 JP 2780397B2 JP 1306644 A JP1306644 A JP 1306644A JP 30664489 A JP30664489 A JP 30664489A JP 2780397 B2 JP2780397 B2 JP 2780397B2
- Authority
- JP
- Japan
- Prior art keywords
- centrifugal
- clutch
- rear wheel
- start clutch
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M23/00—Transmissions characterised by use of other elements; Other transmissions
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Arrangement Of Transmissions (AREA)
- Transmissions By Endless Flexible Members (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、前輪
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 the front wheel side, and a difference in rotation due to steering of the front wheel and the rear wheel 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、滑り回っ
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。Motorcycles that drive the front and rear wheels are often used in places where the road surface is soft and where the drag coefficient is low, or when the load on the front wheels is low when climbing uphill. There is an inconvenience that the stability is deteriorated due to being taken in the rotation direction of the front wheel.
この発明は、かかる点に鑑み、後輪側の第一遠心式発
進クラッチと前輪用の第二遠心式発進クラッチの性能特
性を変えて前輪側の伝達トルクを少くし、後輪側から駆
動され始めて発進でき、スタート時に、前輪が滑ったり
ハンドリングが悪くなるようなことがない前後輪駆動自
動二輪車の駆動装置を得ることを目的とする。In view of the above, the present invention changes the performance characteristics of the first centrifugal start clutch for the rear wheels and the second centrifugal start clutch for the front wheels to reduce the transmission torque on the front wheels and is driven from the rear wheels. An object of the present invention is to provide a drive device for a front-rear-wheel drive motorcycle that can start for the first time and does not cause slippage of the front wheels or poor handling at the start.
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トレーリング側
に拡がるようにし、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をリーディング側に拡がるようにし
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 via a continuously variable belt transmission and a second centrifugal start clutch, the centrifugal clutch shoe of the second centrifugal start clutch on the front wheel side is extended to the trailing side, and the first wheel on the rear wheel side. This is because the centrifugal clutch shoe of the centrifugal start clutch is extended to the leading side.
後輪の第一遠心式発進クラッチの遠心クラッチシュー
は、リーディング型にセットしてあって、ハウジングに
食込むようになっているので、伝達トルクが大きい。一
方、前輪の第二遠心式発進クラッチは、遠心クラッチシ
ューが、トレーリング型にセットしてあるので、ハウジ
ングに逃るように接して、伝達トルクが小さい。このた
め後輪の第一遠心式発進クラッチが先にタイトし、前輪
の第二遠心式発進クラッチが遅れてタイトする。これに
よって、後輪から駆動が始って発進する。そして、前輪
の滑り回りやハンドルがとられるのを防止できる。The centrifugal clutch shoe of the first centrifugal start clutch of the rear wheel is set in the leading type and is designed to bite into the housing, so that the transmission torque is large. On the other hand, in the second centrifugal start clutch of the front wheels, the centrifugal clutch shoe is set in the trailing type, so that it comes into contact with the housing so as to escape, and the transmission torque is small. For this reason, the first centrifugal start clutch of the rear wheel tightens first, and the second centrifugal start clutch of the front wheel tightens later. As a result, driving starts from the rear wheels and starts. Further, it is possible to prevent the front wheels from slipping around and the steering wheel from being removed.
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、同一の構造で、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、駆動側に遠心ク
ラッチシュー16の一端を軸着し、バネで遠心クラッチシ
ュー16を内側に引張ってある。そして、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回動し、
ハウジング17に押付けられて、ハウジング17に回転が伝
達される。後輪７側の第一遠心式発進クラッチ３は、遠
心クラッチシュー16が、ハウジング17に食込むリーディ
ング型に取付け、前輪15側の第二遠心式発進クラッチ９
は、遠心クラッチシュー16がハウジング17から逃る方向
のトレーリング型に取付ける。これによって、第５図に
示すように、リーディング型の第一遠心式発進クラッチ
４は、Ａで接続を始めＢでタイトする。又、トレーリン
グ型の第二遠心式発進クラッチ９はＣで接続が始りＤで
タイトする。このため、後輪７に駆動され始め、このと
き前輪15の第二遠心式発進クラッチ９は、ハーフクラッ
チの状態にあり、エンジン回転数が少し高くなった後輪
７より少し遅れたところで、確実な駆動が始る。こうし
て、前輪15の駆動が後輪７の駆動より遅れ、発進時に前
輪15が滑り回りしたり、ハンドルがとられるようなこと
を防止できる。発進後は、エンジン回転を上昇させて行
くと、エンジン回転の上昇に加えて、第一無段ベルト変
速機３と第二無段ベルト変速機８が増速して、走行速度
が速くなる。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, the front wheel 15 is connected via a gear reducer 10, a chain 11, a universal joint 12, a chain 13, and a chain 14.
Concatenate. The first continuously variable belt transmission 3 and the second continuously variable belt transmission 8 have the same structure, and increase the speed by changing the diameter of a 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, one end of a centrifugal clutch shoe 16 is axially mounted on the drive side, and the centrifugal clutch shoe 16 is pulled inward by a spring. When the rotation increases, the centrifugal clutch shoe 16 rotates outward against the spring,
The rotation is transmitted to the housing 17 by being pressed against the housing 17. The first centrifugal start clutch 3 on the rear wheel 7 side is attached to a leading type in which the centrifugal clutch shoe 16 bites into the housing 17, and the second centrifugal start clutch 9 on the front wheel 15 side
Is mounted on a trailing type in which the centrifugal clutch shoe 16 escapes from the housing 17. As a result, as shown in FIG. 5, the leading type first centrifugal start clutch 4 starts connection at A and tightens at B. The trailing type second centrifugal start clutch 9 is connected at C and tight at D. For this reason, it starts to be driven by the rear wheel 7, and at this time, the second centrifugal start clutch 9 of the front wheel 15 is in a half clutch state, and when the engine speed is slightly higher than the rear wheel 7, the second centrifugal start clutch 9 is securely driven. Drive starts. In this way, it is possible to prevent the front wheel 15 from being slid around at the time of starting and the steering wheel from being taken off when the front wheel 15 is driven behind the rear wheel 7. After the start, when the engine speed is increased, in addition to the increase in the engine speed, the first continuously variable belt transmission 3 and the second continuously variable belt transmission 8 increase in speed, and the traveling speed increases.
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をトレーリ
ング型にすることによって、伝達トルクを少く、クラッ
チタイトの回転数を高くすることができる。これによっ
て、発進時に前輪が滑り回りしたり、ハンドルがとられ
ることがなくなり、スムースな走行ができる。又、第一
遠心式発進クラッチと第二遠心式発進クラッチは、取付
ける回転方向が逆になるようにすればよく、構造は同じ
ものが使用できて生産性を高めることができる。As described above, since the present invention is configured as described above, the transmission torque is reduced and the rotational speed of the clutch tight is increased by making the second centrifugal start clutch on the front wheel side a trailing type. Can be. As a result, the front wheels do not slip around or the steering wheel is not taken at the time of starting, and smooth running can be performed. In addition, the first and second centrifugal start clutches may be mounted in the opposite rotation directions, and the same structure can be used, so that productivity can be improved.
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トレーリング側に拡がるよ
うにし、後輪側の第一遠心式発進クラッチの遠心クラッ
チシューをリーディング側に拡が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. , The centrifugal clutch shoe of the front wheel side second centrifugal start clutch is expanded to the trailing side, and the centrifugal clutch shoe of the rear wheel side first centrifugal start clutch is expanded to the leading side. A drive device for a front and rear wheel drive motorcycle characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1306644A JP2780397B2 (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 |
|---|---|---|---|
| JP1306644A JP2780397B2 (en) | 1989-11-28 | 1989-11-28 | Front and rear wheel drive motorcycle drive system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03167091A JPH03167091A (en) | 1991-07-18 |
| JP2780397B2 true JP2780397B2 (en) | 1998-07-30 |
Family
ID=17959586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1306644A Expired - Fee Related JP2780397B2 (en) | 1989-11-28 | 1989-11-28 | Front and rear wheel drive motorcycle drive system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2780397B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104369833A (en) * | 2013-08-16 | 2015-02-25 | 梁海鸥 | Double-wheel stress type double-wheel bicycle |
| US10322769B2 (en) * | 2015-02-06 | 2019-06-18 | Yamaha Hatsudoki Kabushiki Kaisha | Saddle riding vehicle |
-
1989
- 1989-11-28 JP JP1306644A patent/JP2780397B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03167091A (en) | 1991-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |