JPS6241154B2 - - Google Patents
Info
- Publication number
- JPS6241154B2 JPS6241154B2 JP54070784A JP7078479A JPS6241154B2 JP S6241154 B2 JPS6241154 B2 JP S6241154B2 JP 54070784 A JP54070784 A JP 54070784A JP 7078479 A JP7078479 A JP 7078479A JP S6241154 B2 JPS6241154 B2 JP S6241154B2
- Authority
- JP
- Japan
- Prior art keywords
- cowling
- power unit
- radiator
- air
- vehicle body
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000001595 contractor effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Automatic Cycles, And Cycles In General (AREA)
Description
【発明の詳細な説明】
本発明は、パワーユニツト冷却用のラジエータ
を備えた水冷式自動二輪車の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a water-cooled motorcycle equipped with a radiator for cooling a power unit.
従来の水冷式自動二輪車では、ラジエータをパ
ワーユニツトの前面に設置しているので、ラジエ
ータの冷却能力を強化するためにその通風路面積
を広くとると、それによつて車輛全体の空気抵抗
の増加を来たす上、走行風によるパワーユニツト
空冷効果も低下するという問題があつた。 In conventional water-cooled motorcycles, the radiator is installed in front of the power unit, so in order to strengthen the cooling capacity of the radiator, the area of the ventilation path is widened, thereby reducing the overall air resistance of the vehicle. In addition, there was a problem in that the air cooling effect of the power unit due to the running wind was also reduced.
そこで上記空冷効果を高めるために、例えば実
公昭43−14018号公報に示されるようにパワーユ
ニツトを被包するカウリングの前面中央に空冷用
空気の取入口を開口すると共にその取入口の左右
両側部にラジエータを配設したものも提案されて
いるが、そのものでは、上記空気取入口の特設に
よりそれだけラジエータの通風路面積が狭められ
る欠点がある。尚、かかる欠点を解消するため
に、仮に上記空気取入口をそのままにしてラジエ
ータを大型化した場合にはそれだけパワーユニツ
トの前面投影面積が増大し、車輌全体の空気抵抗
の増加を招くばかりでなく車輌が左右方向に大型
化するという問題を生じ、また仮に上記空気取入
口を狭めることによつてラジエータを大型化した
場合には、該空気取入口の所期の機能が期待でき
なくなるという問題を生じる。 Therefore, in order to enhance the above-mentioned air cooling effect, for example, as shown in Japanese Utility Model Publication No. 43-14018, an air cooling air intake port is opened at the center of the front of the cowling that encloses the power unit, and at both the left and right sides of the intake port. Although it has been proposed that a radiator is installed in the radiator, this method has the disadvantage that the area of the ventilation path of the radiator is narrowed due to the special provision of the air intake port. In order to eliminate this drawback, if the radiator were made larger while leaving the air intake port as is, the front projected area of the power unit would increase accordingly, which would not only lead to an increase in the air resistance of the entire vehicle. This causes the problem that the vehicle becomes larger in the left and right direction, and if the radiator is made larger by narrowing the air intake port, the intended function of the air intake port cannot be expected. arise.
本発明は上記に鑑み提案されたもので、通風路
面積の広い大型のラジエータを使用しても空気抵
抗の増加や車輌の左右方向の大型化を来たすこと
がない、パワーユニツトに対する空冷性能に優れ
た前記自動二輪車を提供することを目的とするも
のである。 The present invention has been proposed in view of the above, and has excellent air cooling performance for power units without increasing air resistance or increasing the size of the vehicle in the lateral direction even when using a large radiator with a large ventilation path area. It is an object of the present invention to provide the above-mentioned motorcycle.
以下、図面により本発明の一実施例について説
明すると、第１および第２図において自動二輪車
Ｍは、前記にヘツドパイプ１を有する車体フレー
ムＢ、ヘツドパイプ１に操向軸２を介して支承さ
れて前輪Wfを支持するフロントフオークFf、前
記車体フレームＢ内部に収容されるパワーユニツ
トＰ、およびそのパワーユニツトＰに枢支連結さ
れて自由端で後輪Wrを両持ち式に軸支するリヤ
フオークRfよりなり、それらの構成を次に順次
説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, a motorcycle M includes a body frame B having a head pipe 1 thereon, a front wheel supported by the head pipe 1 via a steering shaft 2, It consists of a front fork Ff that supports Wf, a power unit P housed inside the vehicle body frame B, and a rear fork Rf that is pivotally connected to the power unit P and supports the rear wheel Wr on both sides at its free end. , their configurations will be sequentially explained next.
先ず車体フレームＢは、ヘツドパイプ１に前端
を固着して後方下向きに延びる薄板製カウリング
３と、その後端にねじ５により分離可能に連結さ
れて後輪Wrの上部を覆う断面チヤンネル形のシ
ートステー４とよりなり、そのカウリング３は第
３図に示すように前面板３ａ、左、右の側板３
ｂ，３ｂ、天井板３ｃ、および底板３ｄにより、
後面を開放した殻体に形成され、そして全体とし
て流線形をなしている。このカウリング３の前面
板３ａには空気入口１４が、また両側板３ｂ，３
ｂに空気出口１５がそれぞれ開設される。 First, the vehicle body frame B includes a thin plate cowling 3 whose front end is fixed to the head pipe 1 and extends rearward and downward, and a seat stay 4 with a channel-shaped cross section that is separably connected to the rear end with a screw 5 and covers the upper part of the rear wheel Wr. As shown in FIG. 3, the cowling 3 includes a front plate 3a, left and right side plates 3.
b, 3b, ceiling plate 3c, and bottom plate 3d,
It is formed into a shell with an open rear surface, and has a streamlined shape as a whole. The front plate 3a of this cowling 3 has an air inlet 14, and both side plates 3b, 3
Air outlets 15 are respectively opened at b.
カウリング３内には、空気入口１４に進入した
空気を左右の空気出口１５，１５にスムーズに分
流させる気流分割誘導板４５が設けられ、この気
流分割誘導板４５は、カウリング３の両側板３
ｂ，３ｂを互いに連結してカウリング３の剛性強
化にも役立つている。 Inside the cowling 3, there is provided an air flow dividing guide plate 45 that smoothly divides the air that has entered the air inlet 14 into the left and right air outlets 15, 15.
b, 3b are connected to each other, which also serves to strengthen the rigidity of the cowling 3.
第４および第５図に明示するように、左右の両
空気出口１５，１５には、車体の略前後方向にの
びる偏平板状の一対のラジエータＲ，Ｒが弾性部
材４６，４６を介して装着されるもので、それら
ラジエータはいずれも上下一対の水槽４７，４８
と、それらを連通する複数本の扁平水管４９，４
９…とより構成され、各扁平水管４９の扁平側面
はカウリング３の外側方後向きに傾斜させてあ
る。両ラジエータの上部水槽４７，４７は導管５
０を介してパワーユニツトＰの冷却水出口に、ま
た下部水槽４８，４８は導管５１を介して同冷却
水入口にそれぞれ接続される。 As clearly shown in FIGS. 4 and 5, a pair of flat plate-shaped radiators R, R extending approximately in the longitudinal direction of the vehicle body are attached to both the left and right air outlets 15, 15 via elastic members 46, 46. Each of these radiators has a pair of upper and lower water tanks 47, 48.
and a plurality of flat water pipes 49, 4 that communicate them.
9..., and the flat side surface of each flat water pipe 49 is inclined outwardly and backwardly of the cowling 3. The upper water tanks 47, 47 of both radiators are connected to the conduit 5.
0 to the cooling water outlet of the power unit P, and the lower water tanks 48 and 48 are connected to the same cooling water inlet through conduits 51, respectively.
而して、車輛の走行中は空気入口１４に作用す
るラム圧効果と両空気出口１５，１５に作用する
吸引効果との相乗効果、並びに気流分割誘導板４
５の誘導作用により上記入口１４から２つの出口
１５，１５に亘り大なる気流を生じ（第４図矢印
参照）、それらの気流は各ラジエータＲの扁平水
管４９，４９…の周囲を通過してそれらを効果的
に冷却することができる。その際、扁平水管４
９，４９…は前述のように傾斜していて上記気流
を妨害することもない。かくして、両ラジエータ
Ｒ，Ｒで冷却された冷却水は下部水槽４８，４８
を出て導管５１内で合流し、パワーユニツトＰを
冷却した後、導管５０により左右に分流され、上
部水槽４７，４７にそれぞれ還流する。 Therefore, while the vehicle is running, the synergistic effect of the ram pressure effect acting on the air inlet 14 and the suction effect acting on both air outlets 15, 15, as well as the air flow dividing guide plate 4.
5 generates a large airflow from the inlet 14 to the two outlets 15, 15 (see arrows in Figure 4), and these airflows pass around the flat water pipes 49, 49... of each radiator R. They can be effectively cooled. At that time, flat water pipe 4
9, 49... are inclined as described above and do not obstruct the air flow. In this way, the cooling water cooled by both radiators R, R flows into the lower water tanks 48, 48.
After exiting the water and merging in the conduit 51 and cooling the power unit P, the water is divided into left and right sides by the conduit 50 and returned to the upper water tanks 47, 47, respectively.
また第３図に明示するように、カウリング３の
左、右両側板３ｂ，３ｂの内面には、前後方向に
水平な案内レール６と、複数の補強兼パワーユニ
ツト支持ボス７〜１０とが溶接等により固設さ
れ、それらはすべてパワーユニツトＰの側面に対
面するが、それらのうち最後部のボス１０はパワ
ーユニツトＰの出力軸１１と同心の欠円形状をな
しており、上記ボス７〜１０の適所にはボルト孔
７ａ〜１０ａが穿設され、また欠円形状のボス１
０の中心部には工具窓１２が開設される。 Further, as clearly shown in FIG. 3, a horizontal guide rail 6 in the front-rear direction and a plurality of reinforcement/power unit support bosses 7 to 10 are welded to the inner surfaces of the left and right side plates 3b, 3b of the cowling 3. etc., and all of them face the side surface of the power unit P. Of these, the rearmost boss 10 has an occluded circular shape concentric with the output shaft 11 of the power unit P, and the bosses 7 to Bolt holes 7a to 10a are drilled at appropriate locations of 10, and a boss 1 having an occluded circular shape is provided.
A tool window 12 is opened in the center of 0.
上記カウリング３は、軽合金、合成樹脂等の軽
量材料より一体に、または適当に分割して形成さ
れ、それ自体では実用強度を保有しないものであ
る。尚、１３はカウリング３の上部を補強するた
めにその内面に接合したパツチ部材である。 The cowling 3 is formed integrally or suitably divided from lightweight materials such as light alloys and synthetic resins, and does not have practical strength by itself. Note that 13 is a patch member bonded to the inner surface of the cowling 3 to reinforce the upper part thereof.
上記カウリング３の上部には燃料タンクＴが跨
設され、その後方へ延出する前記シートステー４
に、操縦者Ｄが跨いで座るシートＳが取付けられ
る。 A fuel tank T is installed over the upper part of the cowling 3, and the seat stay 4 extends rearward therefrom.
A seat S, on which the operator D sits astride, is attached to the seat.
フロントフオークFfはテレスコピツク型に構
成され、その上端には操向ハンドル１６、前面に
はヘツドライト１７が装備される。 The front fork Ff has a telescopic configuration, and is equipped with a steering handle 16 at its upper end and a headlight 17 at its front.
次にパワーユニツトＰであるが、これは特に第
７図に明示するように、クランクケース１８と、
そのケース前部よりＶ字形に突出する２つの多気
筒シリンダブロツク１９，２０とを有し、両ブロ
ツク１９，２０間のＶ字溝２１内に各ブロツクの
気化器２２，２３が収められる。 Next is the power unit P, which, as shown in FIG. 7, consists of a crankcase 18,
It has two multi-cylinder cylinder blocks 19 and 20 that protrude in a V-shape from the front of the case, and carburetors 22 and 23 of each block are housed in a V-shaped groove 21 between both blocks 19 and 20.
第６図に示すように、クランクケース１８の左
側壁を貫通して外方へ突出する出力軸１１には駆
動スプロケツト２５が固着され、この駆動スプロ
ケツト２５の収容ハウジングｈを画成するアダプ
タ２６がクランクケース１８の左側面にボルト２
７により固着される。またクランクケース１８の
右側面にも上記アダプタ２６と対向するアダプタ
２６′がボルト２７′により固着されており、この
両アダプタ２６，２６′には出力軸１１の延長軸
線上に配置される一対の枢軸２８，２８′が着脱
可能に螺装され、これら枢軸２８，２８′にベア
リング２９，２９′を介してリヤフオークRfの
左、右基端部がそれぞれ枢支される。 As shown in FIG. 6, a drive sprocket 25 is fixed to the output shaft 11 that penetrates the left side wall of the crankcase 18 and projects outward, and an adapter 26 that defines a housing h for the drive sprocket 25 is attached. Bolt 2 on the left side of the crankcase 18
It is fixed by 7. Further, an adapter 26' opposite the adapter 26 is fixed to the right side of the crankcase 18 by a bolt 27'. Pivot shafts 28, 28' are removably screwed on, and the left and right proximal ends of the rear fork Rf are pivotally supported on these shafts 28, 28' via bearings 29, 29', respectively.
また、両アダプタ２６，２６′には後方へ延出
するブラケツト３０，３０がそれぞれボルト３
１，３１により固着され、これらには棒状ステツ
プ３２が取付けられる（第１および第７図）。 Additionally, brackets 30, 30 extending rearward are attached to both adapters 26, 26', respectively, with bolts 30, 30 extending rearward.
1 and 31, to which a rod-shaped step 32 is attached (FIGS. 1 and 7).
さらに第６図に示すように、クランクケース１
８の左、右両側面には、前記カウリング３内面の
案内レール６．６上を摺動し得る合成樹脂製摺動
部材３３，３３がボルト３４，３４によりそれぞ
れ固着されている。 Furthermore, as shown in Fig. 6, the crankcase 1
Synthetic resin sliding members 33, 33 that can slide on the guide rails 6.6 on the inner surface of the cowling 3 are fixed to both left and right side surfaces of the cowling 3 by bolts 34, 34, respectively.
リヤフオークRfの後端に軸支される後輪Wrは
被動スプロケツト３５を備えており、これと前記
駆動スプロケツト２５間にチエーン３６が張架さ
れる。したがつて、パワーユニツトＰの出力は、
出力軸１１より駆動スプロケツト２５、チエーン
３６、被動スプロケツト３５へと伝達して後輪
Wrを駆動することができる。 The rear wheel Wr, which is pivotally supported by the rear end of the rear fork Rf, is equipped with a driven sprocket 35, and a chain 36 is stretched between the driven sprocket 35 and the drive sprocket 25. Therefore, the output of power unit P is
The power is transmitted from the output shaft 11 to the drive sprocket 25, chain 36, and driven sprocket 35 to the rear wheel.
Can drive Wr.
上記の駆動に伴いチエーン３６に働く引張り力
によりリヤフオークRfの左方脚部が多少変形し
ても、リヤフオークRfの枢支部に無理な荷重が
加わらないように、出力軸１１側の枢軸２８のベ
アリング２９は特に球面軸受が使用される。これ
によりリヤフオークRfの円滑な上下揺動が保障
される。 Even if the left leg of the rear fork Rf is slightly deformed due to the tensile force acting on the chain 36 due to the above drive, the bearing of the pivot 28 on the output shaft 11 side is 29, a spherical bearing is particularly used. This ensures smooth vertical swing of the rear fork Rf.
また前述のように、出力軸１１と枢軸２８，２
８′とが同軸に配置されているから、リヤフオー
クRfの如何なる揺動位置でも駆動および被動ス
プロケツト２５，３５間の距離には変動がなく、
したがつてチエーン３６の張り具合を常に一定に
保持することができる。 Further, as mentioned above, the output shaft 11 and the pivot shafts 28, 2
8' are coaxially arranged, the distance between the driving and driven sprockets 25 and 35 does not change regardless of the swinging position of the rear fork Rf.
Therefore, the tension of the chain 36 can always be kept constant.
第７図に示すように、リヤフオークRfの左右
両脚の中間部には後輪Wrを跨ぐ二股形状の突張
リンク３７の基端が上下揺動自在に枢支３８さ
れ、またこのリンク３７の前方位置でクランクケ
ース１８上部に揺動リンク４０の基端が同じく前
後揺動自在に枢支４１され、そして両リンクク３
７および４０は先端部を互いに軸着３９される。
上記揺動リンク４０とシリンダブロツク２０間
に、それらに両端を軸着４２，４３して唯一の懸
架ばね付緩衝器４４が介装される。尚、緩衝器４
４の固定端、即ち前端はカウリング３の上部後端
に連結してもよい。 As shown in FIG. 7, the base end of a bifurcated tension link 37 that straddles the rear wheel Wr is pivotally supported 38 in the middle of the left and right legs of the rear fork Rf, and the front end of this link 37 At this position, the base end of the swing link 40 is pivoted 41 at the top of the crankcase 18 so as to be able to swing back and forth, and both links 3
7 and 40 are pivoted 39 to each other at their tips.
A unique shock absorber 44 with a suspension spring is interposed between the swing link 40 and the cylinder block 20, with both ends 42 and 43 being pivoted. In addition, buffer 4
The fixed end, ie, the front end of 4 may be connected to the upper rear end of the cowling 3.
而してリヤフオークRfの上下揺動は、突張リ
ンク３７を介して揺動リンク４０を前後に揺動さ
せて懸架ばね付緩衝器４４に伸縮動作を与える。
したがつてリヤフオークRfは一本の懸加ばね付
緩衝器４４により支承されると共に、上下揺動を
緩衝される。 The vertical swing of the rear fork Rf causes the swing link 40 to swing back and forth via the tension link 37, thereby giving the suspension spring-equipped shock absorber 44 an expanding and contracting action.
Therefore, the rear fork Rf is supported by one shock absorber 44 with a suspension spring, and its vertical swing is damped.
自動二輪車Ｍの組立において、カウリング３と
パワーユニツトＰとの結合は次の要領で行われ
る。 In assembling the motorcycle M, the cowling 3 and the power unit P are coupled in the following manner.
即ち、先ずパワーユニツトＰをカウリング３内
にその後方より挿入し、摺動部材３３，３３を案
内レール６，６に沿つて滑らせながら定位置にセ
ツトし、そしてカウリング３の左、右両外側より
ボルト孔７ａ〜１０ａに挿通した締付ボルト５５
〜５８により両側板３ｂ，３ｂのボス７〜１０を
パワーユニツトＰに固着する。この場合、欠円状
ボス１０，１０はパワーユニツトＰのアダプタ２
６，２６′にそれぞれ固着され、その結果特にリ
ヤフオークRfの枢軸２８，２８′周りにおいて、
パワーユニツトＰとカウリング３の両側板３ｂ，
３ｂとが強固に固着される。かくしてパワーユニ
ツトＰは両側板３ｂ，３ｂを互いに堅固に連結し
て、カウリング３に実用強度を付与する強度部材
となる。 That is, first insert the power unit P into the cowling 3 from behind, set the sliding members 33, 33 in place while sliding them along the guide rails 6, 6, and then insert the power unit P into the cowling 3 on both the left and right outer sides. Tightening bolts 55 inserted into bolt holes 7a to 10a
-58, the bosses 7-10 of the side plates 3b, 3b are fixed to the power unit P. In this case, the occluded circular bosses 10, 10 are connected to the adapter 2 of the power unit P.
6 and 26', respectively, and as a result, especially around the pivot shafts 28 and 28' of the rear fork Rf,
power unit P and both side plates 3b of the cowling 3,
3b are firmly fixed. In this way, the power unit P serves as a strength member that firmly connects the side plates 3b, 3b to each other and provides practical strength to the cowling 3.
また走行中は第１図に示すように、操縦者Ｄは
両足をステツプ３２，３２に掛けて燃料タンクＴ
を両膝で挾持した姿勢を保つもので、その際操縦
者Ｄの両脚はカウリング３の後方に隠れ、カウリ
ング３の流線形状と相俟つて車輛の空気抵抗は極
めて少ない。 Furthermore, while driving, as shown in Fig. 1, the driver D places both feet on the steps 32,
At this time, both legs of the driver D are hidden behind the cowling 3, and combined with the streamlined shape of the cowling 3, the air resistance of the vehicle is extremely low.
次に、パワーユニツトＰがカウリング３に結合
してあるとき、チエーン３６、被動スプロケツト
３５の交換等の整備のためにパワーユニツトＰか
らリヤフオークRfを分離する必要のあるとき
は、カウリング３の左右の工具窓１２，１２から
工具を挿入し、それにより枢軸２８，２８′を各
ベアリング２９，２９′から抜き取つて、リヤフ
オークRfの基端部とアダプタ２６，２６′との連
結を解けばよく、したがつて一旦カウリング３に
結合したパワーユニツトＰはこれを分離すること
なく上記整備作業を簡単、迅速に行うことができ
る。 Next, when the power unit P is connected to the cowling 3 and it is necessary to separate the rear fork Rf from the power unit P for maintenance such as replacing the chain 36 and the driven sprocket 35, it is necessary to All you have to do is insert a tool through the tool windows 12, 12, pull out the pivot shafts 28, 28' from the respective bearings 29, 29', and disconnect the base end of the rear fork Rf from the adapters 26, 26'. Therefore, once the power unit P is connected to the cowling 3, the above-mentioned maintenance work can be performed easily and quickly without having to separate it.
以上のように本発明によれば、前、後輪の中間
位置に配設される後輪駆動用パワーユニツトを薄
板製カウリングで被包し、このカウリングの前面
に空気入口を、またその側面に空気出口をそれぞ
れ開口し、その空気出口に、車体の略前後方向に
のびるパワーユニツト冷却用ラジエータを装着し
たので、パワーユニツト部の前面投影面積を拡大
させることなく、通風路面積が広い大容量のラジ
エータの装備が可能となり、従つてカウリングの
整流機能と相俟つて車輌の空気抵抗を著しく減少
させることができ、また車輌の左右方向小型化に
も寄与することができる。しかもカウリング前面
に開口する前記空気入口を大容量のラジエータに
何等邪魔されずに広く形成することができるた
め、その空気入口からカウリング内に導入された
多量の空気の一部を利用してパワーユニツトを効
果的に空冷することができる。 As described above, according to the present invention, a rear wheel drive power unit disposed at an intermediate position between the front and rear wheels is covered with a cowling made of a thin plate, and an air inlet is provided on the front side of the cowling, and an air inlet is provided on the front side of the cowling. Each air outlet is opened, and a power unit cooling radiator that extends approximately in the longitudinal direction of the vehicle body is attached to each air outlet, so it is possible to create a large-capacity vehicle with a wide ventilation duct area without increasing the front projected area of the power unit. It becomes possible to install a radiator, and in combination with the rectifying function of the cowling, the air resistance of the vehicle can be significantly reduced, and it can also contribute to downsizing the vehicle in the left and right direction. Moreover, since the air inlet that opens at the front of the cowling can be made wide without being obstructed by a large-capacity radiator, a portion of the large amount of air introduced into the cowling from the air inlet can be used to power the power unit. can be effectively air cooled.
また前記ラジエータは、上下一対の水槽と、そ
の両水槽間を連通する偏平水管とより構成される
と共に、その偏平水管の偏平側面が前記カウリン
グの外側方後向きに傾斜させたので、その偏平水
管を、空気出口を通過しようとする空気流の流れ
方向と略平行に配列させて、その空気流がラジエ
ータより受ける流動抵抗を僅少にすることがで
き、従つてラジエータを車体の略前後方向に配設
するも、該空気出口における走行風による吸引効
果が十分に得られ、前記空気入口におけるラム圧
効果と相俟つてラジエータに多量の冷却風を供給
することができ、以上の結果、前述の如く通風路
面積が広く大容量のラジエータを装備可能である
こと及びパワーユニツトを効果的に空冷し得るこ
とと相俟つて、パワーユニツトに対すする冷却性
能を著しく向上させることができる。 Further, the radiator is composed of a pair of upper and lower water tanks and a flat water pipe that communicates between the two water tanks, and the flat side surface of the flat water pipe is inclined rearward toward the outside of the cowling. By arranging the radiator substantially parallel to the flow direction of the airflow passing through the air outlet, the flow resistance that the airflow receives from the radiator can be minimized.Therefore, the radiator is arranged approximately in the longitudinal direction of the vehicle body. However, the suction effect of the running wind at the air outlet is sufficiently obtained, and together with the ram pressure effect at the air inlet, a large amount of cooling air can be supplied to the radiator, and as a result, the ventilation is improved as described above. Since the road area is wide and a large capacity radiator can be installed, and the power unit can be effectively air cooled, the cooling performance for the power unit can be significantly improved.
また第２発明によれば、さらに前記カウリング
の左、右両側面に空気出口を開口し、それらに左
右一対のラジエータを装着したので、車輛の空気
抵抗の減少を図りつゝ全体として一層大容量のラ
ジエータを装備できるのみならず、前記両ラジエ
ータにより車輛の左右方向の重量バランスを計る
ことができ、自動二輪車の操縦安定性の向上に有
効である。 Furthermore, according to the second invention, air outlets are opened on both the left and right sides of the cowling, and a pair of left and right radiators are attached to these, thereby reducing the air resistance of the vehicle while increasing the overall capacity. Not only can the radiator be equipped with a radiator, but also the weight balance of the vehicle in the left and right direction can be measured using both radiators, which is effective in improving the handling stability of the motorcycle.
図面は本発明自動二輪車の一実施例を示すもの
で、第１図は全体側面図、第２図はその一部破断
正面図、第３図はカウリングの縦断側面図、第
４，第５および第６図は第１図の―，―
および―線拡大断面図、第７図はパワーユニ
ツトおよびリヤフオークの組立体の側面図であ
る。
Ｍ…自動二輪車、Ｐ…パワーユニツト、Ｒ…ラ
ジエータ、Wf…前輪、Wr…後輪、３…カウリン
グ、３ｂ…側板、４７…上部水槽、４８…下部水
槽、４９…扁平水管。
The drawings show an embodiment of the motorcycle of the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a partially cutaway front view thereof, and Fig. 3 is a longitudinal sectional side view of the cowling, and Fig. Figure 6 is the same as in Figure 1.
FIG. 7 is a side view of the power unit and rear fork assembly. M...Motorcycle, P...Power unit, R...Radiator, Wf...Front wheel, Wr...Rear wheel, 3...Cowling, 3b...Side plate, 47...Upper water tank, 48...Lower water tank, 49...Flat water pipe.
Claims (1)
パワーユニツトを薄板製カウリングで被包し、こ
のカウリングの前面に空気入口を、またその側面
に空気出口をそれぞれ開口し、その空気出口に、
車体の略前後方向にのびるパワーユニツト冷却用
ラジエータを装着し、そのラジエータは、上下一
対の水槽と、その両水槽間を連通する偏平水管と
より構成されると共に、その偏平水管の偏平側面
が前記カウリングの外側方後向きに傾斜してな
る、自動二輪車。 ２ 前記カウリングは前端にヘツドパイプを固着
して車体フレームの一部を構成し、このカウリン
グに車体フレームとしての強度を付与すべくその
左右両側板を前記パワーユニツトを介して堅固に
連結した、特許請求の範囲第１項記載の自動二輪
車。 ３ 前、後輪の中間位置に配設される後輪駆動用
パワーユニツトを薄板製カウリングで被包し、こ
のカウリングの前面に空気入口を、またその左右
両側面に空気出口をそれぞれ開口し、それら空気
出口に、車体の略前後方向にのびる左右一対のパ
ワーユニツト冷却用ラジエータを装着し、その各
ラジエータは、上下一対の水槽と、その両水槽間
を連通する偏平水管とより構成されると共に、そ
の偏平水管の偏平側面が前記カウリングの外側方
後向きに傾斜してなる、自動二輪車。 ４ 前記一対のラジエータは互いに並列して前記
パワーユニツトに接続された、特許請求の範囲第
３項記載の自動二輪車。[Claims] 1. A rear wheel drive power unit disposed at an intermediate position between the front and rear wheels is covered with a cowling made of thin plate, and an air inlet is provided on the front side of the cowling, and an air outlet is provided on the side thereof. Each opens and its air outlet,
A power unit cooling radiator is installed that extends approximately in the longitudinal direction of the vehicle body, and the radiator is composed of a pair of upper and lower water tanks and a flat water pipe that communicates between the two water tanks. A motorcycle with a cowling that slopes outward and backward. 2. The cowling has a head pipe fixed to its front end to constitute a part of the vehicle body frame, and the left and right side plates of the cowling are firmly connected via the power unit in order to give the cowling strength as a vehicle body frame. Motorcycles described in item 1 of the scope. 3. A rear wheel drive power unit located between the front and rear wheels is covered with a thin sheet cowling, and an air inlet is opened in the front of this cowling, and air outlets are opened in the left and right sides of the cowling, respectively. A pair of left and right power unit cooling radiators extending approximately in the longitudinal direction of the vehicle body are installed at these air outlets, and each radiator is composed of a pair of upper and lower water tanks and a flat water pipe that communicates between the two water tanks. , a motorcycle in which a flat side surface of the flat water pipe is inclined rearward and outwardly from the cowling. 4. The motorcycle according to claim 3, wherein the pair of radiators are connected to the power unit in parallel with each other.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7078479A JPS55164580A (en) | 1979-06-06 | 1979-06-06 | Motorcycle |
| US06/156,857 US4618020A (en) | 1979-06-06 | 1980-06-04 | Motorcycle |
| DE8080301873T DE3069011D1 (en) | 1979-06-06 | 1980-06-05 | Motor cycles |
| EP80301873A EP0021657B1 (en) | 1979-06-06 | 1980-06-05 | Motor cycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7078479A JPS55164580A (en) | 1979-06-06 | 1979-06-06 | Motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55164580A JPS55164580A (en) | 1980-12-22 |
| JPS6241154B2 true JPS6241154B2 (en) | 1987-09-01 |
Family
ID=13441488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7078479A Granted JPS55164580A (en) | 1979-06-06 | 1979-06-06 | Motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55164580A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19703273B4 (en) * | 1996-03-05 | 2008-03-27 | Honda Giken Kogyo K.K. | Radiator fan assembly for a motorcycle |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863583A (en) * | 1981-10-12 | 1983-04-15 | ヤマハ発動機株式会社 | Motorcycle |
| JPS60139581A (en) * | 1983-12-26 | 1985-07-24 | 本田技研工業株式会社 | Frame structure of motorcycle |
| JPS63154477A (en) * | 1987-12-03 | 1988-06-27 | ヤマハ発動機株式会社 | Water-cooling engine for motorcycle |
| JP5465642B2 (en) * | 2010-09-29 | 2014-04-09 | 本田技研工業株式会社 | Saddle riding |
| JP6147540B2 (en) * | 2013-03-29 | 2017-06-14 | 本田技研工業株式会社 | Saddle riding |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4314018Y1 (en) * | 1965-12-17 | 1968-06-14 |
-
1979
- 1979-06-06 JP JP7078479A patent/JPS55164580A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4314018Y1 (en) * | 1965-12-17 | 1968-06-14 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19703273B4 (en) * | 1996-03-05 | 2008-03-27 | Honda Giken Kogyo K.K. | Radiator fan assembly for a motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55164580A (en) | 1980-12-22 |
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