JPH0790818B2 - Rear wheel suspension system for vehicles on rough terrain - Google Patents
Rear wheel suspension system for vehicles on rough terrainInfo
- Publication number
- JPH0790818B2 JPH0790818B2 JP60016059A JP1605985A JPH0790818B2 JP H0790818 B2 JPH0790818 B2 JP H0790818B2 JP 60016059 A JP60016059 A JP 60016059A JP 1605985 A JP1605985 A JP 1605985A JP H0790818 B2 JPH0790818 B2 JP H0790818B2
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- rear wheel
- swing arm
- suspension system
- rough terrain
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/01—Motorcycles with four or more wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
- B62D61/06—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with only three wheels
- B62D61/08—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with only three wheels with single front wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K2005/001—Suspension details for cycles with three or more main road wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
- Vehicle Body Suspensions (AREA)
Description
【発明の詳細な説明】 a.産業上の利用分野 本発明は、不整地走行用車両の後輪懸架装置に関する。TECHNICAL FIELD The present invention relates to a rear wheel suspension system for an off-road vehicle.
b.従来の技術 一般車両のリヤサスペンション構造として、ダイヤゴナ
ル式サスペンションがある。一般に、後輪の前輪と比較
して振動を受けることが少ないため、車種によっては構
造が簡単で、容易に取付けることのできるダイヤゴナル
式サスペンションを採用している。ここで、ダイヤゴナ
ル式サスペンションとは、独立懸架方式の１種であり、
スイングアーム（サスペンションアーム）の揺動中心が
車体中心に対して傾斜しているものである。また、ホイ
ールは、スイングアームに回転のみ可能に取付けられて
おり、当該アームの揺動に伴い、揺動中心に沿って動く
ようになっている。特に、車軸のホイール側には自在継
手が設けられていないことに大きな特徴を有している。b. Conventional technology As a rear suspension structure for general vehicles, there is a diagonal suspension. Generally, since the rear wheels receive less vibration than the front wheels, a diagonal type suspension that has a simple structure and can be easily mounted is adopted depending on the model. Here, the diagonal suspension is a type of independent suspension system,
The swing center of the swing arm (suspension arm) is inclined with respect to the center of the vehicle body. Further, the wheel is attached to the swing arm so as to be rotatable only, and moves along the swing center with the swing of the arm. In particular, it has a great feature that no universal joint is provided on the wheel side of the axle.
c.発明が解決しようとする課題 しかしながら、このようなダイヤゴナルサスペンション
は、キャンバの変化に伴なってジャッキアップ効果が生
じるので、この方式を採用した一般車両では、コーナリ
ング走行時に、遠心力によって外側のタイヤが沈み込む
ため、横方向に対する走行安定性に問題があった。c. Problems to be Solved by the Invention However, since such a diagonal suspension produces a jack-up effect with a change in camber, a general vehicle adopting this method can reduce the external force by centrifugal force during cornering. Since the tire sinks, there was a problem in lateral running stability.
ここで、ジャッキアップ現象とは次のような現象をい
う。すなわち、車両の緩旋回時には、遠心側のホイール
のキャンバ角（垂線とホイールとが形成する角度）は求
心方向になる。また、車両が急旋回すると、遠心力が大
きくなるため、キャンバ角は遠心方向になる。したがっ
て、急旋回の初期では、緩旋回と同様にキャンバ角が求
心方向に変化し、途中からキャンバ角が遠心方向に変化
するため、乗員に不快感を与えることになる。Here, the jack-up phenomenon means the following phenomenon. That is, when the vehicle turns gently, the camber angle of the centrifugal wheel (the angle formed by the perpendicular and the wheel) is in the centripetal direction. Further, when the vehicle makes a sharp turn, the centrifugal force increases, and the camber angle becomes the centrifugal direction. Therefore, in the initial stage of a sharp turn, the camber angle changes in the centripetal direction as in the case of the gentle turn, and the camber angle changes in the centrifugal direction midway, which gives an occupant an uncomfortable feeling.
このようなジャッキアップ現象が起こる限界速度を高め
るためには、スイングアームを長くしたり、あるいは地
表からスイングアームの揺動軸までの距離を短くすると
いう２種類の対応策が考えられるが、一般車両ではトレ
ッドやホイール径を変えることが難しいという問題があ
った。In order to increase the critical speed at which such a jack-up phenomenon occurs, two types of countermeasures are conceivable, namely, lengthening the swing arm or shortening the distance from the ground surface to the swing axis of the swing arm. There was a problem in the vehicle that it was difficult to change the tread and wheel diameter.
一方、第３図に示す不整地走行用車両50のリヤサスペン
ション構造にダイヤゴナル式サスペンション方式を採用
した場合、不整地走行用車両50には低圧バルーンタイヤ
51が装備されているから、旋回時において遠心側この低
圧バルーンタイヤ51のたわみ量が大きくなることによっ
てキャンバ変化によるジャッキアップ効果が吸収され、
不整地走行用車両50のコーナリング走行時に外側のタイ
ヤが沈み込むおそれがない。On the other hand, when the rear suspension structure of the vehicle 50 for running on rough terrain shown in FIG. 3 adopts the diagonal suspension system, the vehicle 50 for running on rough terrain has low-pressure balloon tires.
Since the 51 is equipped, the jack-up effect due to the camber change is absorbed by increasing the deflection amount of the low pressure balloon tire 51 on the centrifugal side during turning.
There is no risk of the outer tires sinking when cornering the rough terrain vehicle 50.
d.課題を解決するための手段 上記従来技術の有する課題を解決するために、本発明に
おいては、低圧バルーンタイヤを備えた不整地走行用車
両において、前記低圧バルーンタイヤの後輪を懸架する
手段としてダイヤゴナルサスペンションを用いている。d. Means for Solving the Problems In order to solve the problems of the above-mentioned conventional technology, in the present invention, in an all-terrain vehicle equipped with a low-pressure balloon tire, means for suspending the rear wheel of the low-pressure balloon tire. The diagonal suspension is used as.
e.実施例 以下、本発明を図示の実施例に基づいて詳細に説明す
る。e. Examples Hereinafter, the present invention will be described in detail based on illustrated examples.
第１図および第２図は本発明を適用した不整地走行用車
両の後輪懸架装置の１実施例を示すもので、この後輪懸
架装置にはダイヤゴナルサスペンションが用いられてい
る。1 and 2 show an embodiment of a rear wheel suspension system for a vehicle for traveling on rough terrain to which the present invention is applied. A diagonal suspension is used for this rear wheel suspension system.
図において、１は車両の前後方向に長く形成されたエン
ジン、２は後部車体フレーム、３はリヤショックアブソ
ーバ、４は低圧バルーンタイヤの後輪、５はダイヤゴナ
ルサスペンションを構成するスイングアーム（サスペン
ションアーム）であり、該スイングアーム５はその中間
部5aにおいて後輪４に取付けられている。In the figure, 1 is an engine elongated in the longitudinal direction of the vehicle, 2 is a rear body frame, 3 is a rear shock absorber, 4 is a rear wheel of a low-pressure balloon tire, and 5 is a swing arm (suspension arm) that constitutes a diagonal suspension. The swing arm 5 is attached to the rear wheel 4 at its intermediate portion 5a.
上記後部車体フレーム２は、それぞれ左右一対をなすア
ッパチューブ6,ロアチューブ７およびリヤチャーブ８に
よって構成され、リヤチューブ８はロアチューブ７の後
部を立ち上がらせて形成されるとともに、その後端部が
アッパチューブ６と連結されている。The rear vehicle body frame 2 is composed of a pair of left and right upper tubes 6, a lower tube 7 and a rear chirp 8. The rear tube 8 is formed by raising the rear portion of the lower tube 7 and the rear end portion thereof has an upper tube. 6 is connected.
一方、上記スイングアーム５は、第２図に示す如く、そ
の中間部5aがほぼ台形状に屈曲形成されており、中間部
5aにはリヤショックアブソーバ３の下端と連結するため
の補強部材９が架設されている。また、スイングアーム
５の両端部5b,5cは、ロアチューブ７およびリヤチュー
ブ８のそれぞれに固設された断面コ字状のブラケット10
に回動自在に取付けられるとともに、スイングアーム５
の長さを長くとるために車両後方側の端部5cは車両前方
側の端部5bに対して相対的に上方に配置されている。On the other hand, as shown in FIG. 2, the swing arm 5 has an intermediate portion 5a bent and formed in a substantially trapezoidal shape.
A reinforcing member 9 for connecting to the lower end of the rear shock absorber 3 is installed on the 5a. Further, both ends 5b and 5c of the swing arm 5 are brackets 10 fixed to the lower tube 7 and the rear tube 8 and having a U-shaped cross section.
The swing arm 5
In order to increase the length of the vehicle, the rear end portion 5c of the vehicle is arranged relatively upward with respect to the front end portion 5b of the vehicle.
低圧バルーンタイヤを備えた不整地走行用車両では、最
低地上高を高くする必要がある。また、ダイヤゴナルサ
スペンションでは、スイングアーム５の揺動軸線上に自
在継手を配置する必要がある。しかも、不整地走行の際
には、後輪４の前側よりも後側の法の障害物を乗り越え
る場合に邪魔になるという性質を有している。このよう
な点から、スイングアーム５の車両前方側の端部5bを低
く、車両後方側の端部5cを高くし、もって障害物乗り越
え性能の向上を図っている。In rough terrain vehicles equipped with low-pressure balloon tires, it is necessary to increase the minimum ground clearance. Further, in the diagonal suspension, it is necessary to arrange the universal joint on the swing axis of the swing arm 5. In addition, it has the property of becoming an obstacle when overcoming a legal obstacle on the rear side of the rear wheel 4 rather than on the front side of the rear wheel 4 when traveling on rough terrain. From this point of view, the end portion 5b of the swing arm 5 on the vehicle front side is made lower and the end portion 5c on the vehicle rear side is made higher, thereby improving the obstacle passing performance.
しかも、車両前方側の端部5bは、車両後方側の端部5cよ
りエンジン１に対して左右方向外側に配置されている。
すなわち、スイングアーム５の車両後方側の端部5cは、
車軸に近接した位置に配置され、該車軸の地上高とほぼ
同じとなり、その地上高が高くなっている。Moreover, the end portion 5b on the front side of the vehicle is arranged outside the end portion 5c on the rear side of the vehicle with respect to the engine 1 in the left-right direction.
That is, the end portion 5c on the vehicle rear side of the swing arm 5 is
It is arranged in a position close to the axle, and is substantially the same as the ground clearance of the axle, and the ground clearance is high.
また、スイングアーム５の車両後方側の端部5cは、車両
前方側の端部5bよりも車体左右方向の中心線に近い位置
に配置されており、これによってアーム長が長くなっ
て、ジャッキアップ現象を効果的に防ぐように構成され
ている。Further, the end 5c of the swing arm 5 on the vehicle rear side is arranged closer to the center line in the vehicle body left-right direction than the end 5b on the vehicle front side. It is configured to effectively prevent the phenomenon.
上記構成に係る不整地走行用車両の後輪懸架装置の作動
は、次のとおりである。The operation of the rear wheel suspension system for an off-road vehicle according to the above configuration is as follows.
不整地走行用車両が凹凸の路面を走行すると、後輪４は
路面の凹凸に応じて車体に対し上下動する。いま、後輪
４が上動したとすると、これに伴いスイングアーム５
は、中間部5aにおいて後輪４の上動力を受け、リヤショ
ックアブソーバ３の緩衝作用によって前記上動力を抑制
しつつ、その両端部5b,5cを支点として上方に回動す
る。次に、後輪４が下動する際には、スイングアーム５
は前記と逆の動作によって下方に回動する。When the vehicle for traveling on an uneven terrain travels on an uneven road surface, the rear wheels 4 move up and down with respect to the vehicle body according to the unevenness of the road surface. Now, assuming that the rear wheel 4 moves upward, the swing arm 5
Receives the upper power of the rear wheel 4 at the intermediate portion 5a and suppresses the upper power by the buffering effect of the rear shock absorber 3, while rotating upward with its both ends 5b, 5c as fulcrums. Next, when the rear wheel 4 moves downward, the swing arm 5
Rotates downward by the opposite operation.
本実施例は簡便なダイヤゴナルサスペンションを用いた
後輪懸架装置であるので、車両重量を軽くすることがで
きる。また、スイングアーム５の車両後方側の端部5c
は、車両前方側の端部5bよりも高く、かつ車軸に近づけ
ているので、障害物乗り越え性能を向上させることがで
きる。さらに、スイングアーム５の車両前方側の端部5b
をエンジン１の設置個所に対して外側に、車両後方側の
端部5cを内側に取付けてあるので、後輪４の最終駆動軸
（図示せず）の長さを長くとることができ、これにより
キャンバ変化を少なくすることができる。The present embodiment is a rear wheel suspension device using a simple diagonal suspension, so that the weight of the vehicle can be reduced. In addition, the end 5c of the swing arm 5 on the rear side of the vehicle
Is higher than the end portion 5b on the front side of the vehicle and is close to the axle, so that the obstacle passing performance can be improved. Furthermore, the end 5b of the swing arm 5 on the front side of the vehicle
Is attached to the outside of the installation location of the engine 1 and the end portion 5c on the rear side of the vehicle is attached to the inside, so that the length of the final drive shaft (not shown) of the rear wheel 4 can be increased. This makes it possible to reduce camber changes.
以上、本発明の１実施例につき述べたが、本発明は記述
の実施例に限定されるものでなく、本発明の技術的思想
に基づいて各種の変形が可能であって、例えばスイング
アームの形状は適用車種に応じて適宜変形してもよい。Although one embodiment of the present invention has been described above, the present invention is not limited to the described embodiment, and various modifications can be made based on the technical idea of the present invention. The shape may be appropriately modified depending on the type of vehicle to which it is applied.
f.発明の効果 上述の如く、本発明に係る不整地走行用車両の後輪懸架
装置は、低圧バルーンタイヤの後輪を懸架する手段とし
てダイヤゴナルサスペンションを用いたので、車両の旋
回時に遠心側の低圧バルーンタイヤのたわみ量が大きく
なり、したがって旋回時には地表からスイングアーム揺
動軸の距離が短くなり、シャッキアップ現象を起こりに
くくすることができる。また、本発明のダイヤゴナルサ
スペンションでは、これを構成するスイングアームの車
両後方側端部を車両前方側端部よりも上方の位置でかつ
車軸に近接した位置に配置することが可能であるため、
障害物乗り越え性能の向上を図ることができるととも
に、地上高を高くできる。さらに、本発明のダイヤゴナ
ルサスペンションでは、これを構成するスイングアーム
の車両後方側端部を車両前方側端部よりも車体左右方向
の中心線に近づけ得るため、スイングアーム全体の長さ
を長くとることができ、その結果、キャンバ変化が少な
くなり、ジャッキアップ現象を効果的に防止できる。し
かも、本発明の懸架装置は、構造が簡単であって、かつ
容易に取付けることができるから、製品のコストダウン
を図ることができるとともに取付作業の能率を上げるこ
とができる。f. Effects of the invention As described above, the rear wheel suspension system for an all-terrain vehicle according to the present invention uses the diagonal suspension as a means for suspending the rear wheels of the low-pressure balloon tire. The deflection amount of the low-pressure balloon tire becomes large, so that the distance from the ground surface to the swing arm swing axis becomes short at the time of turning, so that it is possible to make the jack-up phenomenon less likely to occur. Further, in the diagonal suspension of the present invention, it is possible to dispose the vehicle rear side end portion of the swing arm that constitutes the swing arm at a position above the vehicle front side end portion and at a position close to the axle.
It is possible to improve the performance of overcoming obstacles and increase the ground clearance. Further, in the diagonal suspension of the present invention, the rear end of the swing arm constituting the vehicle can be closer to the center line in the vehicle body left-right direction than the front end of the vehicle. As a result, the change in camber is reduced and the jack-up phenomenon can be effectively prevented. Moreover, since the suspension device of the present invention has a simple structure and can be easily mounted, the cost of the product can be reduced and the mounting work efficiency can be increased.
第１図および第２図は本発明に係る不整地走行用車両の
後輪懸架装置の１実施例を示すものであって、第１図は
その概念的側面図、第２図は第１図におけるＡ−Ａ線矢
視断面図、第３図は従来公知の不整地走行用車両を示す
斜視図である。 ２……後部車体フレーム、 ３……リヤショックアブソーバ、 ４……後輪、 ５……スイングアーム、 5b……車両前方側の端部、 5c……車両後方側の端部、 10……ブラケット。1 and 2 show an embodiment of a rear wheel suspension system for a vehicle for traveling on rough terrain according to the present invention. FIG. 1 is a conceptual side view thereof, and FIG. 2 is FIG. FIG. 3 is a sectional view taken along line AA in FIG. 3, and FIG. 3 is a perspective view showing a conventionally known vehicle for running on uneven terrain. 2 ... rear body frame, 3 ... rear shock absorber, 4 ... rear wheel, 5 ... swing arm, 5b ... vehicle front end, 5c ... vehicle rear end, 10 ... bracket .
Claims (3)
車両において、前記低圧バルーンタイヤの後輪を懸架す
る手段としてダイヤゴナルサスペンションを用いたこと
を特徴とする不整地走行用車両の後輪懸架装置。1. A rear wheel suspension system for a rough terrain vehicle, comprising a diagonal suspension as means for suspending a rear wheel of the low pressure balloon tire in a vehicle for rough terrain traveling provided with a low pressure balloon tire. .
るスイングアームの車両後方側端部が、車両前方側端部
よりも上方の位置でかつ車軸に近接した位置に配置され
ていることを特徴とする特許請求の範囲第（１）項に記
載の不整地走行用車両の後輪懸架装置。2. A swing arm forming the diagonal suspension has a vehicle rear end portion which is arranged at a position higher than a vehicle front end portion and closer to the axle. The rear wheel suspension system for a vehicle for traveling on rough terrain according to item (1).
るスイングアームの車両後方側端部が、車両前方側端部
よりも車体左右方向の中心線に近い位置でかつ車軸に近
接した位置が配置されていることを特徴とする特許請求
の範囲第（１）項に記載の不整地走行用車両の後輪懸架
装置。3. A rear end of the swing arm constituting the diagonal suspension on the vehicle rear side is located closer to a center line in the vehicle body left-right direction than an end on the vehicle front side and closer to the axle. The rear wheel suspension system for a vehicle for traveling on an uneven terrain according to claim (1).
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60016059A JPH0790818B2 (en) | 1985-01-30 | 1985-01-30 | Rear wheel suspension system for vehicles on rough terrain |
| US06/786,942 US4650210A (en) | 1985-01-30 | 1985-10-11 | Saddle type wheeled vehicle for off-road service |
| NZ213782A NZ213782A (en) | 1985-01-30 | 1985-10-11 | A saddle-type vehicle: rear macpherson strut suspension; pivot location |
| CA000493235A CA1258237A (en) | 1985-01-30 | 1985-10-17 | Saddle type wheeled vehicle for off-road services |
| AU48823/85A AU579290B2 (en) | 1985-01-30 | 1985-10-17 | Saddle type wheeled vehicle for off-road services |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60016059A JPH0790818B2 (en) | 1985-01-30 | 1985-01-30 | Rear wheel suspension system for vehicles on rough terrain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61175109A JPS61175109A (en) | 1986-08-06 |
| JPH0790818B2 true JPH0790818B2 (en) | 1995-10-04 |
Family
ID=11905998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60016059A Expired - Fee Related JPH0790818B2 (en) | 1985-01-30 | 1985-01-30 | Rear wheel suspension system for vehicles on rough terrain |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0790818B2 (en) |
| CA (1) | CA1258237A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63110086A (en) * | 1986-10-27 | 1988-05-14 | 本田技研工業株式会社 | Uneven-ground travelling car |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5878808A (en) * | 1981-11-05 | 1983-05-12 | Mazda Motor Corp | Strut style suspension of car |
| JPS58164428A (en) * | 1982-03-25 | 1983-09-29 | Yamaha Motor Co Ltd | Rear wheel driving device of vehicle |
-
1985
- 1985-01-30 JP JP60016059A patent/JPH0790818B2/en not_active Expired - Fee Related
- 1985-10-17 CA CA000493235A patent/CA1258237A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1258237A (en) | 1989-08-08 |
| JPS61175109A (en) | 1986-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |