JPS59186737A - Power unit for vehicle - Google Patents
Power unit for vehicleInfo
- Publication number
- JPS59186737A JPS59186737A JP58060854A JP6085483A JPS59186737A JP S59186737 A JPS59186737 A JP S59186737A JP 58060854 A JP58060854 A JP 58060854A JP 6085483 A JP6085483 A JP 6085483A JP S59186737 A JPS59186737 A JP S59186737A
- Authority
- JP
- Japan
- Prior art keywords
- power unit
- cylinder
- stay
- cover
- crankcase
- 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
- 230000003584 silencer Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000005192 partition Methods 0.000 description 12
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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 SIDE-CARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/02—Tricycles
- B62K5/027—Motorcycles with three wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Description
【発明の詳細な説明】
を有し・同駆動用後輪間にパワーユニットヲ配設した車
輌に於けるパワーユニットの配設姿勢およ動用後輪間に
パワーユニットを配設してその上方をカバ一部材で覆っ
たスクーター型自動三輪車は公知である。[Detailed Description of the Invention] The arrangement position of the power unit in a vehicle in which the power unit is disposed between the drive rear wheels and the power unit disposed between the drive rear wheels and the upper part thereof covered. Scooter-type tricycles covered with parts are known.
斯かるタイプの自動三輪車では・カバ一部材内に収納さ
れろ高温発熱体であるシリンダーー排気消音器ト、キャ
ブレターやエアクリーナー等の吸気補機類の配置によっ
て、吸気温度が上昇し、充填効率に影響を与え、更にシ
リンダー、排気消音器に十分な走行風ビ受は難い等の不
都合が生じろ恐れがある。又、パワーユニット上方乞覆
うカバ一部材の内．ａに熱気が籠って、吸気補機類およ
びカバ一部材が熱影響を受は易い。In this type of tricycle, the intake air temperature rises due to the arrangement of the cylinder, which is a high-temperature heating element housed within the cover, the exhaust silencer, and intake auxiliary equipment such as the carburetor and air cleaner. In addition, there is a risk that the cylinder and exhaust muffler may be difficult to receive enough wind vibrations. Also, there is a part of the cover that covers the upper part of the power unit. Hot air is trapped in a, and the intake auxiliary equipment and cover parts are easily affected by the heat.
本発明は、斯かる技術的背景の下に案出されたものであ
り、操向用前輪と駆動用後二＠を有し）駆動用後二輪間
にパワーユニットを配設して・そσ〕上方をカバ一部材
で覆った車輌に於いて、クランクケースの後部に車体後
方に指向した姿勢でシリンダー乞配設し、パワーユニッ
トの上方空間前方に吸気補機類を配設するとともに、そ
の後方に排気消音器を配設したこと乞特徴としている。The present invention was devised against this technical background, and has a front wheel for steering and a rear wheel for driving, and a power unit is disposed between the two rear wheels for driving. In a vehicle whose upper part is covered with a cover material, the cylinder is arranged at the rear of the crankcase in a position facing the rear of the vehicle body, and the intake auxiliary equipment is arranged in front of the space above the power unit, and at the rear thereof. A distinctive feature is the installation of an exhaust silencer.
本発明の目的は、シリンダーの発声による吸気補機類の
加熱を避けると同、時に、シＩＪンダーに対する走行風
の誘導ン効果的に行う点にある。An object of the present invention is to avoid heating of intake auxiliary equipment due to cylinder noise, and at the same time, to effectively induce running air to the cylinder.
以下・本発明の廟施例乞−，第１図乃至第９図Ｇこ則し
て説明する。Embodiments of the present invention will be explained below with reference to FIGS. 1 to 9G.
スクータ−型の自動三輪車１は、前車体２および後車体
２０で構成ぎれ、前車体２には、操向用前＠ＦＷが、後
車体２０には、左、石一対σ）駆動用後輪ＲＷが、夫れ
去れ配設ぎれている。A scooter-type tricycle 1 is composed of a front body 2 and a rear body 20. The front body 2 has a front @FW for steering, and the rear body 20 has a left wheel and a rear wheel for driving. RW is not properly placed.
前車体２に於いて４ま、スクータ−型自動二輪車と同様
に、メインフレーム３に対して、レッグシールド４、ス
テップ５、同ステップ５の後方に位置する起立壁部６ａ
乞含む後部ボデー力・（−６が数例けられ、且つ同ボデ
ーカ・（−６の上部にシート７が配設されている。In the front body 2, similarly to a scooter-type motorcycle, there is a leg shield 4, a step 5, and an upright wall portion 6a located behind the step 5 with respect to the main frame 3.
The rear body force (-6) was affected by several cases, and the seat 7 was installed on the top of the body car (-6).
又、後車体かは、メインフレーム３に対して連結機構１
０２介して連結されている。この連結機構１０は、メイ
ンフレーム３に上下方向揺動自在に枢支ぎれたジヨイン
ト・シャフト１１．１２と＼ジヨイント“シャフト１２
ヲ回転自在に支持するジヨイント・ケース１３と、同ジ
ヨイント・ケース１３を後記クランクケースに連結する
ブラケット１３αとで構成されている（以上、第１図乃
至第３図参照）０そして・リヤクッション１５が、メイ
ンフレーム３とジヨイント・シャフト１２０間に配設さ
れている０前記後車体２０に於いては、ユニットスイン
グ式のパワーユニット２１を左、右から挾むが如く後輪
ＲＩＥ配設ｇれ・パワーユニット２１および一対の後＠
ＲＷの上方を樹脂製カバ一部材５０が覆っている（第３
図、軍４図参照）。Also, for the rear vehicle body, the connection mechanism 1 is connected to the main frame 3.
They are connected via 02. This coupling mechanism 10 consists of joint shafts 11 and 12 that are pivotally supported on the main frame 3 so as to be able to swing vertically.
It is composed of a joint case 13 that rotatably supports the joint case 13, and a bracket 13α that connects the joint case 13 to a crankcase (described later) (refer to FIGS. 1 to 3)0 and a rear cushion 15. However, in the rear vehicle body 20 disposed between the main frame 3 and the joint shaft 120, the rear wheels RIE are arranged so as to sandwich the unit swing type power unit 21 from the left and right sides. After power unit 21 and pair @
A resin cover member 50 covers the upper part of RW (third
(See Figure, Army Figure 4).
更に、パワーユニット２１のクランクケース２２は、ン
リンダ−２３に対して車体前方側に位置し・その前部に
突設ぎれたステー２２ （Ｌにて三本び〕螺子１４によ
りジヨイント・ケース１３のブラケット１３αと岡りに
結合されている。シリンダー２３は、クランクケース２
２に対して車体後方側に位置し、車体後方に指向した傾
斜姿勢で配設されている。この傾斜姿勢とは、シリンダ
ー乙の中心軸線Ｃが水平線Ｈと成す角θが・比較的小ざ
いことを意味する。そして、クランフケ−７２２および
シリンダー２３は、ステー２２ （ｌの一部を除き、車
体側方から見た後＠ ＲＷ １７） ＠郭線内に収まる
寸法、形状になごｆｔている（第３図参照）。Furthermore, the crankcase 22 of the power unit 21 is located on the front side of the vehicle body with respect to the cylinder 23, and the bracket of the joint case 13 is connected to the bracket of the joint case 13 by means of a stay 22 (three L) screws 14 protruding from the front part thereof. The cylinder 23 is connected to the crankcase 2.
It is located on the rear side of the vehicle compared to No. 2, and is arranged in an inclined position facing toward the rear of the vehicle. This tilted attitude means that the angle θ between the central axis C of the cylinder B and the horizontal line H is relatively small. The crankcase 722 and the cylinder 23 are sized and shaped to fit within the outline of the stay 22 (excluding a part of the l, when viewed from the side of the vehicle @ RW 17) (Fig. 3). reference).
前記ノ（クーユニット２１の概略形状を一、第７図に示
しており、クランクケース２２の上面にキャブレター３
７がイ」設ぎれ、同クランクケース２２の側面には・ク
ランク軸に枢着された冷却ファンを覆うファン°カバー
２４が付設され、又シリンダー２３を覆って、シュラウ
ド２６がクランクケース２２に螺着固定ぎれている。な
お・ファ・ン・カッζ−２４の開口２４ａ部には、ダク
ト２５が取付けらオｔており （第４１ズ・第５図、第
７図参照）、同ダクト２５、開口２４σを通じてファン
・カバー２４内に導入ぎれた冷却風は・ジュラウド２６
内に供給され、シリンダー２３を冷却しながら、シュラ
ウド２６の下方開口否ａから〜地面へ向けて排出さｔ’
ｔろ（第３図、第８図参照）。The general shape of the cooling unit 21 is shown in FIG.
A fan cover 24 is attached to the side of the crankcase 22 to cover a cooling fan pivotally mounted on the crankshaft, and a shroud 26 is screwed onto the crankcase 22 to cover the cylinder 23. The clothes are torn. A duct 25 is attached to the opening 24a of the fan fan ζ-24 (see Figure 41, Figures 5 and 7), and the fan is connected through the duct 25 and the opening 24σ. The cooling air that has been introduced into the cover 24 is
While cooling the cylinder 23, it is discharged from the lower opening of the shroud 26 toward the ground.
(See Figures 3 and 8).
又、カバー跨１第５０で覆われたパワーユニット２１の
上方空間は、鋼板製隔壁６０によって・前・後に区画さ
れ、その前方空間に吸気補機類３０が配設ざ、！ｔ、後
方空間に排気消音器４０が配設されている０前記吸気補
機類３０とは、エアクリーナー３１およびキャブレター
３７を指し、吸気補機類３０の左側方には、ダクト２５
が位置して側壁として機能し・キャブレター３７０右側
万には、隔壁６０の右辺に一体に付設キｉｔた側壁６１
が位置している（第３図乃至第５図・第７図参照）。又
、エアクリーナ・ケース３２と一体に隔壁板３３が形成
されており・・この隔壁板３３は、カバ一部材５０．隔
壁６０１側壁６１およびダクト５と共に吸気室Ａ４画成
し、回吸気室Ａ内にキャブレター３７が位置する。そし
て、エアクリーナー３１の１吸入ダクト３２ （Ｌは、
エアクリーナーク−−−ス３２に一体的に・取イ＼」け
られて、吸気室Ａ内に開口し、エンジン稼動時には、吸
気室Ａ内の空気）Ｓ１吸入ダクト３２ （１”；ｉ通じ
て、エアクリーナー：３１内に吸入２１ｔ、ニレメン）
Ｅによって清浄化された後、連結管３６、キャブレター
３７馨経て、ガソリンと共に、ニサイクル・エンジンの
クランクケース２２内に吸入ぎれる様になぎれている（
第３図乃至第５図参照）。Further, the space above the power unit 21 covered by the cover straddle 1 50 is divided into front and rear by steel plate partition walls 60, and the intake auxiliary equipment 30 is arranged in the front space! t, an exhaust silencer 40 is disposed in the rear space 0 The intake auxiliary equipment 30 refers to the air cleaner 31 and the carburetor 37, and on the left side of the intake auxiliary equipment 30 there is a duct 25.
On the right side of the carburetor 370, there is a side wall 61 that is integrally attached to the right side of the bulkhead 60.
(See Figures 3 to 5 and 7). Also, a partition plate 33 is formed integrally with the air cleaner case 32...This partition plate 33 is connected to a cover member 50. The partition wall 601 together with the side wall 61 and the duct 5 define an intake chamber A4, and the carburetor 37 is located within the re-intake chamber A. 1 suction duct 32 of the air cleaner 31 (L is
The air cleaner coax 32 is integrally removed and opens into the intake chamber A, and when the engine is running, the air in the intake chamber A) S1 intake duct 32 (1''; Air cleaner: 21t intake in 31, Niremen)
After being cleaned by E, it passes through the connecting pipe 36 and the carburetor 37, and is sucked into the crankcase 22 of the two-cycle engine along with gasoline.
(See Figures 3 to 5).
なお、前記隔壁板３３は、下辺部にて車体前方側へ折曲
されて、ステー３４として形成され、同ステ−３４にて
１ブラケツト３５器セ介して、エアクリーナー３１がク
ランクケース２２のステー２２０に固定すれている。ブ
ラケット３５ ＆：ｔ 、一対のステー３５ ＣＬがス
テー２２ ｃｔ ’ｌｊｌ跨いだ状態で、螺子１４ヲも
１つてステー２２ａに固定ぎれ・又開口３５ Ａに対し
・螺子３４ Ａをもってステー３４が固定されている（
第３図、第７図参照）。The bulkhead plate 33 is bent toward the front side of the vehicle body at the lower side to form a stay 34, and the air cleaner 31 is attached to the stay of the crankcase 22 through one bracket 35 on the stay 34. It is fixed at 220. Bracket 35 &:t, with the pair of stays 35 CL straddling the stay 22 ct 'ljl, one screw 14 is also fixed to the stay 22a, and the stay 34 is fixed to the opening 35 A with the screw 34 A. ing(
(See Figures 3 and 7).
なお又、ステー３４の下面には、車体前後方向に指向す
る小室３４αが形成さ、ｌｔｌその内部に、イグニッシ
ョンコイル７０が収納されている（第３図、第５図参照
）０
前、ｆｌ−１，ブラケット３５は、エアクリーナー３１
ヲ支持するばかりでなく、カバ一部材５０をも支持する
。Furthermore, a small chamber 34α oriented in the longitudinal direction of the vehicle body is formed on the lower surface of the stay 34, and an ignition coil 70 is housed inside the chamber 34α (see FIGS. 3 and 5). 1. The bracket 35 is the air cleaner 31
It not only supports the cover member 50 but also supports the cover member 50.
即ち、カバ一部材５００前端Ｍｓにステー５４ Ａが突
設どれており、同ステー５４ Ａに付された係止ピン５
４ａがグロメット５５ヲ介してブラケット３５の開口３
５ Ｃに嵌入ぎれ、螺着用開口５４ ｈにて、グロメッ
ト５７を介しζ（螺子５６ヲもってブラケット３５の対
応する開口部に螺着ぎｆする様になされている（第７図
参照）。That is, the stay 54A is protruded from the front end Ms of the cover member 500, and the locking pin 5 attached to the stay 54A
4a is connected to the opening 3 of the bracket 35 through the grommet 55.
5C, and is screwed into the corresponding opening of the bracket 35 with the screw 56 through the grommet 57 at the screw opening 54h (see FIG. 7).
ところで、前記隔壁６０の右辺に１側壁６１が付さすし
ている点は一前記の通りであるが、こ内側壁６１は、排
気消音器４０側にも伸長して、排気消音器４０の右側に
位置し・又側壁６１の後方伸長部に対応して、隔壁６０
の左辺に側壁６２が付ぎれてい石。そして、隔壁６０・
左１右側壁６１・６２の上辺には・鋼板製遮熱板６３が
螺着されており翫排気消音器４０は・隔壁６０、両側壁
６１，６２および遮熱板６３で区画された室内に収納さ
れている（第３図、第４図、第６図、第７図参照）。By the way, as mentioned above, the first side wall 61 is attached to the right side of the partition wall 60, but this inner side wall 61 also extends to the exhaust muffler 40 side and is attached to the right side of the exhaust muffler 40. and corresponding to the rearward extension of the side wall 61, the bulkhead 60
A side wall 62 is attached to the left side of the stone. And the bulkhead 60・
A heat shield plate 63 made of a steel plate is screwed to the upper side of the left and right side walls 61 and 62. (See Figures 3, 4, 6, and 7).
なお、前方へ伸長した側壁６１の下辺には、折曲部６１
ａが形成されており・回部に於いて１ブラケツト６４
に螺Ｎされている。このブラケット６４は、クランクケ
ース２２ヲ前、後に跨ぐが如くに・一対の螺着部２２
ｂに固定されている。又、隔壁６０の下辺にＣま、側壁
１６２側に偏してステー６０αが付設ざｆｔており、ス
テー６０ （Ｌは、クランクケース２２に螺着される。Note that there is a bent portion 61 on the lower side of the side wall 61 extending forward.
A is formed and one bracket 64 is formed in the turning part.
It is screwed into the This bracket 64 straddles the front and rear of the crankcase 22, and has a pair of threaded portions 22.
It is fixed at b. Further, a stay 60α is attached to the lower side of the partition wall 60 so as to be biased toward the side wall 162 by C, and the stay 60 (L) is screwed onto the crankcase 22.
以上、要するに、隔壁６０およびこれと一体の両側壁６
１１．６２は、折曲部６１α、ステー６０αにてクラン
クケース側に固定されているのであ小（第３図、第７図
参照）。In summary, the partition wall 60 and both side walls 6 integrated therewith
11.62 is small because it is fixed to the crankcase side by the bent portion 61α and the stay 60α (see Figs. 3 and 7).
更に、遮熱板６３には、左、右一対の開口６３ （Ｌが
形成されており、この開口６３αと対応して、カッく一
部材５０にも開口５３が形成され、両開口５３．６３α
に嵌合してゴム製ダクト６４が取付けらｆｔてし）る。Further, a pair of left and right openings 63 (L) are formed in the heat shield plate 63, and corresponding to these openings 63α, an opening 53 is also formed in the cut member 50, and both openings 53.63α
The rubber duct 64 is attached by fitting the rubber duct 64.
このダクト６４は、排気消音器４０およびその下方のシ
リンダー乙から放出２ ｔｔた熱を、力・く一部制５０
の上方へ逃がすために付されたものである（第３図、第
４図、第６図、第７図参照）０
なお、遮熱板６３Ｖま必然的に加熱されろか、同部材６
３から放出されろ輻射熱は、カッく一部材５０の後部に
形成された放熱窓５２乞通じてカッく一部材５０の上方
へ逃力底ｔろ〇
一方、シリンダー２３の排気ボー）２３１Ｚは、地面側
に位置しており一同排気ポート２３ （Ｌに対応して形
成ぎｆｔたシュラウド２６の開口２６ （ｌ乞通して、
排気管４］が排気ホ゛−ト２３ａに固着されている。そ
して・ｌ！′Ｉｌ′気管４１と連通ずる排気消音器４０
は、そｆ〕前部下方に突設ぎれた左、右一対のステー４
０αＧこて、螺子・１０ｈ化もってクランクケース２２
に固定される（第７図、第９図参照）。This duct 64 conducts the heat emitted from the exhaust silencer 40 and the cylinder below it by a force/kube section 50.
It is attached to allow the heat to escape upward (see Figures 3, 4, 6, and 7).
The radiant heat emitted from the cylinder 23 escapes upward through the heat dissipation window 52 formed at the rear part of the cylinder 23. On the other hand, the exhaust bow of the cylinder 23 is , located on the ground side, and the exhaust port 23 (opening 26 of the shroud 26 formed corresponding to L).
The exhaust pipe 4] is fixed to the exhaust port 23a. And l! 'Il' Exhaust silencer 40 communicating with trachea 41
, so f] A pair of left and right stays 4 protruding from the lower front.
Crankcase 22 with 0αG iron, screw and 10h
(See Figures 7 and 9).
又、シュラウド％の頂面にステー２７が螺着ぎれ一カバ
一部材５００後端部に突設ぎれた左・右一対のステー５
４ Ｂが、ステー２７の螺着用量ロ２７α部に対して螺
着される（第８図参照）。故Ｇこ、カッ（一部４７’
５０は、前部でブラケット３５に固定され、後部でステ
ー２７に固定２１ｔている訳であ６ ｏそして、カバ一
部材５００後端部を外方から覆って、保穫板５８が、螺
子５８σをもってステー２７の螺着用量ロ２７／１部に
螺Ｎぎλｔており・この保抑板５８ｃよ、シリンダ−２
３０頂面部を後方からカバーする。排気消音器４０から
延びる排気管４２の開口端は、この保詠板５８σ〕下端
部に位置ずゐ（第３図、第４図、第７図、第８図参照）
。In addition, a stay 27 is screwed onto the top surface of the shroud, and a pair of left and right stays 5 are provided protruding from the rear end of the cover member 500.
4B is screwed onto the screwed portion 27α of the stay 27 (see FIG. 8). Late G Ko, Kak (Part 47'
50 is fixed to the bracket 35 at the front and to the stay 27 at the rear 6 o Then, covering the rear end of the cover member 500 from the outside, a protection plate 58 is attached to the screw 58σ. There is a screw thread λt on the 27/1 part of the stay 27, and this retaining plate 58c, the cylinder 2
30. Cover the top part from the rear. The open end of the exhaust pipe 42 extending from the exhaust silencer 40 is located at the lower end of the protection plate 58σ (see Figures 3, 4, 7, and 8).
.
なお、カバ一部何５０には、放熱窓５２、開口５３の他
、外気導入窓５１、キャブレター調整用開口５０ ａが
形成ぎれており・開口５０ （Ｌに着脱可能にキャップ
５９が嵌着されろ（第７図参照）。In addition, in addition to the heat dissipation window 52 and the opening 53, the outside air introduction window 51 and the carburetor adjustment opening 50a are not formed in the cover part 50. A cap 59 is removably fitted to the opening 50 (L). (See Figure 7).
本実施例は、前記の様に構成されており、エンジン稼動
時、外気は外気導入窓５１、隔壁板３３０周辺、或いは
ダクト５の周辺等の狭７１部を経て吸気室Ａ内に導入’
ａｉｔ−，エアクリーナー３１の吸入ダクト３２ａから
吸入ぎれる。この間、走行時に発生する埃、或いＧま雨
天時σ〕水滴Ｇま、隔壁板３３、隔壁６０・側壁６１、
ダクト２５等との゛′ｌ′Ｎ性衝突で排除キ、ｌするの
で、エアクリーナー３Ｊの負担が軽減化ぎれろ○又、シ
リンダー２：３は、ダクト２５ヲ通してシュラウド２６
内に導入されだ空気て強制冷却され＼その熱気は開口２
６ （ｔから下方へ向けて放出されろ。そして、シリン
ダー２３から発散された熱気の一部は＼」二昇し、排気
消音器４０から発散された熱気と共に・ダクト６４ヲ通
じてカバ一部ｖｉ５０の外方に排出される。この様に、
シリンダー２３、排気消音器４０がら発散された熱気は
・吸気室Ａ内の吸気補機類３０・或いＯま樹脂製カバ一
部材５０に影響を与えろことなく、下方およびカバ一部
イ第５０の上方へ放出コｉｔろので極めて有効である。This embodiment is constructed as described above, and when the engine is running, outside air is introduced into the intake chamber A through the narrow 71 portions such as around the outside air introduction window 51, the area around the partition plate 330, or around the duct 5.
ait-, the air is inhaled from the suction duct 32a of the air cleaner 31. During this time, dust generated during driving, water droplets G, partition wall plate 33, partition wall 60, side wall 61,
The load on the air cleaner 3J is reduced because the cylinder 2:3 is removed by collision with the duct 25, etc. Also, the cylinder 2:3 is connected to the shroud 26 by passing through the duct 25.
The air introduced into the interior is forcedly cooled and the hot air flows through opening 2.
6 (is discharged downward from the cylinder 23. Then, a part of the hot air emitted from the cylinder 23 rises, and along with the hot air emitted from the exhaust silencer 40, passes through the duct 64 to a part of the cover. It is discharged to the outside of vi50.In this way,
The hot air emanating from the cylinder 23 and the exhaust silencer 40 does not affect the intake auxiliary equipment 30 in the intake chamber A, or the resin cover member 50, and blows downward and into the cover part 50. It is extremely effective because it emits water upwards.
又、排気消音器４０から発生ずる輻射熱は、シリンダー
２３に比して低温である上、隔壁６０、遮熱板６３が配
設されているため、吸気補機類３０．或いはカバ一部ｖ
ｉ５０に対する熱影響はほとんど無い。Furthermore, the radiant heat generated from the exhaust muffler 40 is at a lower temperature than that of the cylinder 23, and since the partition wall 60 and the heat shield plate 63 are provided, the radiant heat generated by the exhaust muffler 40 is lowered by the intake auxiliary equipment 30. Or part of the hippo
There is almost no thermal effect on the i50.
なお、加熱された遮熱板６３の熱は、外気導入窓５］か
らカバ一部材５０内に取入れられｈダクト２５−＋１１
１１壁６１，６２．！ｌ：、爾後輪Ｒｗト１７） 間ｗ
流１ｚ ；’：ｒ 走行Ｍ ト共に、放熱惹５２乞通
じて、カバ一部材５０の外方へ放出されろ。Note that the heat of the heated heat shield plate 63 is taken into the cover member 50 through the outside air introduction window 5] and is transferred to the h duct 25-+11.
11 walls 61, 62. ! l:, rear wheel Rw 17)
Both the flow 1z;':r and the traveling M are discharged to the outside of the cover member 50 through the heat dissipation attraction 52.
更に、吸気補機類３０は、シリンダー２３からｔｉｌｌ
［して車体前方側に配設ぎれ、シリンダー２３、或いＧ
ま排気消音器４０から生ずる熱気が、走行風によって車
体後方へ流されろという点がらも〜吸気補機類３０に対
する熱影響は僅少である。Further, the intake auxiliary equipment 30 is connected to the cylinder 23 until
[Cylinder 23, or G
Also, since the hot air generated from the exhaust muffler 40 is blown toward the rear of the vehicle body by the running wind, the thermal influence on the intake auxiliary equipment 30 is minimal.
又、ダクト２５、両側壁６１，６２は、吸気補機類３゜
および排気消音器４０と、爾後＠ＲＷとの間に位置して
・後輪ＲＷの回転に付隨する埃・或いは水滴等？遮断す
るという効果がある。In addition, the duct 25 and both side walls 61 and 62 are located between the intake auxiliary equipment 3° and the exhaust silencer 40, and the later @RW, and prevent dust, water droplets, etc. that may be attached to the rotation of the rear wheel RW. ? It has the effect of blocking.
更に又、ンリンダー２３ヲ、クランクケース２２の後部
（車体後方側）に於いて、車体後方へ指向しり傾斜姿勢
で配設することにより、パワーユニット２１０重心が可
及的に低減化Ｅ ｉｔ％且っ又後車体２０の全高が小さ
くなるという利点もある。Furthermore, the center of gravity of the power unit 210 is reduced as much as possible by arranging the engine cylinder 23 at the rear of the crankcase 22 (on the rear side of the vehicle body) in an inclined position pointing toward the rear of the vehicle body. There is also the advantage that the overall height of the rear vehicle body 20 is reduced.
なお・シリンダー２３の傾斜姿勢は・水平線Ｈに対する
傾斜角θ （第３図参照）を略ぼ零にすることも可能で
ある。Note that the tilted posture of the cylinder 23 can also be such that the tilt angle θ (see FIG. 3) with respect to the horizontal line H is approximately zero.
以上・実施例の説明から明らかな様に・本発明では、操
向用前輪と・駆動用後二軸を有し・駆動用後二輪間にパ
ワーユニットを配設して〜その上方乞カバ一部材で覆っ
た車輌に於いて＼クランクケースの後部に車体後方に指
向した姿勢でシリンダー乞配設し、パワーユニットの上
方空間明方に吸気補機類を配設するとと右に、そび〕後
方に排気消音器を配設したので、高温発熱体であるシリ
ンダーが車庫最後部下方に位置し、車体下方を流ｆする
走行風乞受は易く、冷却効果が大である０又＼吸気補機
類は、シリンダーに対して離隔した前方側に位置し、且
つ隣接１−ろ排気消音器がシリンダーに比して低温であ
ろＬめ、熱影響７受は難い。As is clear from the above description of the embodiments, the present invention has a front wheel for steering and two rear axles for driving, and a power unit is disposed between the two rear wheels for driving. In a vehicle covered with Because the exhaust silencer is installed, the cylinder, which is a high-temperature heating element, is located at the bottom of the rear end of the garage, making it easy to catch the wind flowing below the car body, which has a large cooling effect. is located on the front side away from the cylinder, and the adjacent 1-filter exhaust muffler is at a lower temperature than the cylinder, so it is less likely to be affected by heat.
更に、クランクケースび〕後部に車体後方に指向した姿
勢でシリンダーを配設することにより一車体重心が低下
するという利点もある。Furthermore, by arranging the cylinder in the rear part of the crankcase so as to point toward the rear of the vehicle body, there is the advantage that the center of gravity of the vehicle is lowered.
第１図は本発明の一実施例に係るパワーユニットを備え
た自動三輪車の左側面図、第２図はその背面図、第３図
はその後車体の要部縦断側面図１７Ａ４図は同要部横断
平面図、第５図ｃｉ第３図に於けろＶ−Ｖ線断面図、第
６図Ｏま第３図に於けろ■−■線断面図、第７図は前記
後車体の要部分解斜視図・第８図は同後車体に於けｂカ
バ一部材およびシュラウドの数例は関係を示す斜視図、
第９図は同後車体に於ける排気消音器の斜視図てある。
■・・・自動三輪車、２・・・前車体・３・・・メイン
フレーム、４・・・レッグシールド、５・・・ステップ
、６・・・後ジヨイント・ケース、１３ａ・・・ブラケ
ツト、１４・・・螺子、１５・・・リヤクッション、
２０・・・後車体、２１・・・パワーユニット、２２・
・・クランクケース、２２ａ・・・ステー、２２ｂ・・
・螺Ｎ部、２３・・・シリンター、２３α・・・排％ホ
ー）、２４・・・ファン・カバー、２５・・・ダクト、
２６・・・シュラウド、２７・・・ステー、加・・・吸
気補機類、３１・・・エアクリーナー、３２・・・エア
クリーナ・−ケース、３２ａ・・・吸入ダクト、３３パ
隔壁板、３４・・・ステー、３４α・・・小室、３４
Ａ・・・螺子、３５・・・ブラケット、３６・・・連結
管、３７・・・キャブレター、４０・・・排気消音器、
４０ （１・・・ステー、４０ ｈ・・・螺子、４１．
４２・・・・排気管、
５０・・・カバ一部４４．５１・・・外気導入窓、５２
・・・放熱窓翫５３−・・開口、５４ Ａ 、 ５４
Ｂ ・−ステー、５４ （Ｌ−・・係ＩＰビン、５４
ｈ・・・螺着用開口、５５・・・グロメット、５６・・
・螺子、５７・・・グロメット、５８・・・保給板、５
９・・・キャップ、６０・・・隔壁、６０ Ｇ・・・ス
テー、６１・・・側壁、６１ （１・・・折曲部、６２
・・・側壁、６３・・・遮熱析、６３ ａ・・・開口、
６４・・・ダクト、７０・・・イグニッションコイル、
Ａ・・・吸気室。
代理人 弁理士 江 原 望
外１名Fig. 1 is a left side view of a tricycle equipped with a power unit according to an embodiment of the present invention, Fig. 2 is a rear view thereof, and Fig. 3 is a longitudinal side view of the main part of the vehicle body. Plan view, Figure 5ci is a sectional view taken along line V-V in Figure 3, Figure 6 is a sectional view taken along line II--■ in Figure 3, and Figure 7 is an exploded perspective view of essential parts of the rear vehicle body. Figure 8 is a perspective view showing the relationship between several examples of b cover parts and shrouds in the same rear vehicle body;
FIG. 9 is a perspective view of the exhaust muffler in the rear vehicle body. ■...Auto tricycle, 2...Front body, 3...Main frame, 4...Leg shield, 5...Step, 6...Rear joint case, 13a...Bracket, 14 ...Screw, 15...Rear cushion, 20...Rear body, 21...Power unit, 22...
・・Crankcase, 22a・・Stay, 22b・・
・Thread N part, 23...Cylinder, 23α...Exhaust hole), 24...Fan cover, 25...Duct,
26... Shroud, 27... Bracket, Addition... Intake auxiliary equipment, 31... Air cleaner, 32... Air cleaner-case, 32a... Intake duct, 33 Pa bulkhead plate, 34 ...Stay, 34α...Komuro, 34
A...Screw, 35...Bracket, 36...Connecting pipe, 37...Carburetor, 40...Exhaust silencer,
40 (1... stay, 40 h... screw, 41.
42...Exhaust pipe, 50...Part of cover 44.51...Outside air introduction window, 52
... Heat dissipation window 53 - ... Opening, 54 A, 54
B - Stay, 54 (L-... IP bin, 54
h...Screw opening, 55...Grommet, 56...
・Screw, 57... Grommet, 58... Maintenance plate, 5
9... Cap, 60... Partition wall, 60 G... Stay, 61... Side wall, 61 (1... Bent part, 62
... side wall, 63 ... heat shield analysis, 63 a ... opening,
64...Duct, 70...Ignition coil, A...Intake chamber. Agent: Patent attorney Nozomi Ehara (1 person)
Claims (1)
バヮーユニッｂｙ配設するとともに１該駆動用後二輪お
よび該パワーユニットの上面Ｑｆｉうカバ一部材を設け
て成る車輌に於いて１エンジンのシリンダーを、クラン
クケースに対して車体後方側に配設するとともに、車体
後方に指向した姿勢となし・該カバ一部材と該パワーユ
ニット出面で区画されろ空間内前方に、吸気補機類を配
設し、該空間内後方に、排気消音器を配設して成る車輌
用パワーユニット。In a vehicle having a front wheel for steering and two rear axles for driving, a bow unit by disposed between the two rear wheels for driving, and a cover member provided on the upper surface Qfi of the two rear wheels for driving and the power unit. The cylinders of one engine are arranged on the rear side of the vehicle body with respect to the crankcase, and the intake auxiliary equipment is placed at the front of the space defined by the cover member and the power unit exit surface. A vehicular power unit comprising: an exhaust silencer disposed at the rear of the space;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58060854A JPS59186737A (en) | 1983-04-08 | 1983-04-08 | Power unit for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58060854A JPS59186737A (en) | 1983-04-08 | 1983-04-08 | Power unit for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59186737A true JPS59186737A (en) | 1984-10-23 |
| JPH0349795B2 JPH0349795B2 (en) | 1991-07-30 |
Family
ID=13154380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58060854A Granted JPS59186737A (en) | 1983-04-08 | 1983-04-08 | Power unit for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59186737A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8118129B2 (en) * | 2007-03-06 | 2012-02-21 | Honda Motor Co., Ltd. | Drainage structure in fuel cell motorcycle |
| US20120118659A1 (en) * | 2010-11-11 | 2012-05-17 | Honda Motor Co., Ltd. | Saddle-ride-type electrically operated vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136669A (en) * | 1979-04-05 | 1980-10-24 | Honda Motor Co Ltd | Travelling car |
-
1983
- 1983-04-08 JP JP58060854A patent/JPS59186737A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136669A (en) * | 1979-04-05 | 1980-10-24 | Honda Motor Co Ltd | Travelling car |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8118129B2 (en) * | 2007-03-06 | 2012-02-21 | Honda Motor Co., Ltd. | Drainage structure in fuel cell motorcycle |
| US20120118659A1 (en) * | 2010-11-11 | 2012-05-17 | Honda Motor Co., Ltd. | Saddle-ride-type electrically operated vehicle |
| US8668037B2 (en) * | 2010-11-11 | 2014-03-11 | Honda Motor Co., Ltd. | Saddle-ride-type electrically operated vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0349795B2 (en) | 1991-07-30 |
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