JPH0539998Y2 - - Google Patents
Info
- Publication number
- JPH0539998Y2 JPH0539998Y2 JP20210986U JP20210986U JPH0539998Y2 JP H0539998 Y2 JPH0539998 Y2 JP H0539998Y2 JP 20210986 U JP20210986 U JP 20210986U JP 20210986 U JP20210986 U JP 20210986U JP H0539998 Y2 JPH0539998 Y2 JP H0539998Y2
- Authority
- JP
- Japan
- Prior art keywords
- transmission shaft
- vehicle body
- shaft
- engine
- bearing
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims description 84
- 230000007246 mechanism Effects 0.000 description 25
- 230000008602 contraction Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案はエンジンを搭載した後車体に前輪を
支持した前車体を揺動可能に連結した揺動式自動
三輪車の動力伝達装置に係り、特に、エンジン動
力を前輪へ伝達する伝達軸を前車体に支持する軸
受を前後車体の揺動中心軸の延長上または近傍に
配置した動力伝達装置に関する。[Detailed description of the invention] (Field of industrial application) This invention relates to a power transmission device for a rocking motor tricycle, in which a front body supporting front wheels is rockably connected to a rear body carrying an engine, and particularly The present invention relates to a power transmission device in which a bearing for supporting a transmission shaft for transmitting engine power to front wheels on a front vehicle body is disposed on an extension of or near a pivot axis of the front and rear vehicle bodies.
（従来の技術）
後二輪、前一輪を有する自動三輪車にあつて
は、後二輪を支持した後車体に前一輪を支持した
前車体をローリングジヨイント等を介して揺動可
能に連結し、操作性および走行性能の向上を図る
車体揺動式のものが知られている。このような車
体揺動式の自動三輪車では、後車体にエンジンを
搭載し、このエンジンで後二輪を駆動して走行す
る。(Prior art) In the case of a tricycle having two rear wheels and one front wheel, the front body supporting the front wheel is swingably connected to the rear body supporting the two rear wheels via a rolling joint, etc. A vehicle body swinging type vehicle is known to improve vehicle performance and driving performance. Such a rocking body type motor tricycle has an engine mounted on the rear body, and the engine drives the two rear wheels to drive the vehicle.
ところで、近年、このような車体揺動式の自動
三輪車にあつては、積雪路等の低摩擦係数路面で
の走行性能の向上等を目的に後二輪とともに前一
輪を駆動するものが提案され、例えば、特開昭58
−206477号公報に記載されたものが知られてい
る。この特開昭58−206477号公報に記載された自
動三輪車は、後車体に搭載されたエンジンを後車
体に支持された伝達軸と前車体に支持された伝達
軸等によつて前輪に連結するとともに、伝達軸間
にスプライン継手、ユニバーサルジヨイント等を
介設して前車体と後車体との揺動にともなう伝達
軸間の変位を吸収する。 Incidentally, in recent years, in the case of such a body-swinging type motor tricycle, one in which the front wheel is driven together with the rear two wheels has been proposed for the purpose of improving running performance on low friction coefficient road surfaces such as snow-covered roads. For example, JP-A-58
The one described in the -206477 publication is known. The tricycle described in Japanese Patent Application Laid-Open No. 58-206477 connects the engine mounted on the rear body to the front wheels through a transmission shaft supported on the rear body and a transmission shaft supported on the front body. At the same time, a spline joint, universal joint, etc. is interposed between the transmission shafts to absorb displacement between the transmission shafts due to rocking of the front and rear vehicle bodies.
（この考案が解決しようとする問題点）
しかしながら、上述した特開昭58−206477号公
報に記載された自動三輪車にあつては、後車体に
支持された伝達軸と前車体に支持された伝達軸と
が前車体の揺動にともない大きく揺動してスプラ
イン継手による伸縮量が大きく、スプライン継手
の負担が大きいという問題点があつた。(Problems to be solved by this invention) However, in the case of the tricycle described in the above-mentioned Japanese Patent Application Laid-open No. 58-206477, there is a transmission shaft supported by the rear body and a transmission shaft supported by the front body. There was a problem in that the shaft oscillated greatly with the oscillation of the front vehicle body, and the amount of expansion and contraction caused by the spline joint was large, putting a heavy burden on the spline joint.
この考案は、上述した問題点を鑑みてなされた
もので、エンジンから前輪への動力伝達系のスプ
ライン継手の負担を軽減することができる自動三
輪車の動力伝達装置を提供することを目的とす
る。 This invention was made in view of the above-mentioned problems, and aims to provide a power transmission device for a tricycle that can reduce the burden on the spline joint of the power transmission system from the engine to the front wheels.
（問題点を解決するための手段）
この考案は、
左右後輪を支持するとともにエンジンを搭載し
た後車体に前一輪を支持するとともに乗員用シー
トを備えた前車体を左右揺動自在に連結し、前記
前輪に前記エンジンの動力を伝達して走行する揺
動式自動三輪車の動力伝達装置において、
前記後車体に軸受を介し回転自在に支持されて
後端が前記エンジンに連結された入力側伝達軸の
前端を前記前車体に軸受を介し回転自在に支持さ
れた伸縮可能な中間伝達軸の後端に第１ユニバー
サルジヨイントを介して揺動可能に連結するとと
もに、前端が前記前輪にボールジヨイントを介し
て連結した伸縮可能な出力側伝達軸の後端に前記
中間伝達軸の前端を第２ユニバーサルジヨイント
を介して連結し、前記中間伝達軸を前傾させて前
記中間伝達軸を支持する軸受を前記前車体と前記
後車体との揺動中心軸の延長上またはその近傍に
配置したことが要旨である。(Means for solving the problem) This idea supports the left and right rear wheels, supports the front wheel to the rear body equipped with an engine, and connects the front body equipped with a passenger seat so that it can swing left and right. , in a power transmission device for a rocking tricycle that travels by transmitting power from the engine to the front wheels, the input side transmission is rotatably supported by the rear vehicle body via a bearing and whose rear end is connected to the engine. The front end of the shaft is swingably connected via a first universal joint to the rear end of an extendable intermediate transmission shaft rotatably supported by the front vehicle body via a bearing, and the front end is connected to the front wheel by a ball joint. The front end of the intermediate transmission shaft is connected via a second universal joint to the rear end of the extendable output transmission shaft connected through the joint, and the intermediate transmission shaft is tilted forward to support the intermediate transmission shaft. The gist is that the bearing is disposed on the extension of the pivot axis of the front vehicle body and the rear vehicle body or in the vicinity thereof.
（作用）
この考案にかかる揺動式自動三輪車の動力伝達
装置によれば、中間伝達軸を前車体に支持する軸
受が前車体と後車体との揺動中心軸の延長上また
はこの近傍に配置されるため、前車体と後車体と
の揺動時の軸受の変位が零または微少となり、中
間伝達軸の揺動およびこの中間伝達軸に連結した
出力側伝達軸の揺動も零または微少となる。した
がつて、出力側伝達軸および中間伝達軸の伸縮量
も小さく、前車体と後車体との揺動を円滑にで
き、また、これら伝達軸を伸縮させるためのスプ
ライン結合等の機構の負荷を軽減して耐久性を改
善させることができ、あるいは、スプライン結合
等の機構を省略することもできる。(Function) According to the power transmission device for a swing-type automatic tricycle according to this invention, the bearing that supports the intermediate transmission shaft on the front vehicle body is arranged on the extension of the pivot axis of the front vehicle body and the rear vehicle body or in the vicinity thereof. As a result, the displacement of the bearing when the front vehicle body and rear vehicle body swing is zero or slight, and the rocking of the intermediate transmission shaft and the output transmission shaft connected to this intermediate transmission shaft are also zero or slight. Become. Therefore, the amount of expansion and contraction of the output side transmission shaft and the intermediate transmission shaft is small, allowing smooth rocking between the front and rear vehicle bodies, and reducing the load on mechanisms such as spline connections for expanding and contracting these transmission shafts. This can improve durability, or eliminate mechanisms such as spline connections.
（実施例）
以下、この考案の実施例を図面に基づいて説明
する。(Example) Hereinafter, an example of this invention will be described based on the drawings.
第１図および第２図はこの考案の一実施例にか
かる揺動式三輪車の動力伝達装置を表し、第１図
が動力伝達系を模式化して示す自動三輪車の側面
図、第２図が断面図である。 Figures 1 and 2 show a power transmission system for a rocking tricycle according to an embodiment of this invention, with Figure 1 being a side view of the tricycle schematically showing the power transmission system, and Figure 2 being a cross-sectional view. It is a diagram.
第１図において、１０は車体揺動式の自動三輪
車を示し、自動三輪車１０は一輪の前輪１１を支
持した前車体１２と二輪の後輪１３を支持した後
車体１４とがローリングジヨイント１５によつて
揺動中心軸Ｃ廻りに揺動可能に連結されている。
前車体１２には、前部にステアリングシヤフト１
６が図示しないヘツドチユーブを挿通して回転自
在に支持され、中間部に低床式のフロア１７が設
定され、また、後部に上端にシート１８を有する
シートポスト１９が起設されている。ステアリン
グシヤフト１６は、上端がバーハンドル２０と連
結し、下端がフオーク２１およびブラケツト２２
を介して前輪１１に操向可能に連結している。な
お、２３は緩衝器である。 In FIG. 1, reference numeral 10 indicates a swinging type motor tricycle, and the tricycle 10 has a front body 12 supporting one front wheel 11 and a rear body 14 supporting two rear wheels 13 at a rolling joint 15. Therefore, it is connected so as to be swingable around the swing center axis C.
The front body 12 has a steering shaft 1 at the front.
6 is rotatably supported through a head tube (not shown), a low floor type 17 is set in the middle part, and a seat post 19 having a seat 18 at the upper end is provided in the rear part. The steering shaft 16 has an upper end connected to a bar handle 20, and a lower end connected to a fork 21 and a bracket 22.
It is steerably connected to the front wheels 11 via. Note that 23 is a buffer.
後車体１４には、上部に荷台２４が設定され、
また、前述した後輪１３がリヤフオーク２５によ
つて支持され、さらに、荷台２４の下方にエンジ
ン２６および変速機構２７等が配設されている。 A loading platform 24 is set on the upper part of the rear vehicle body 14,
Further, the aforementioned rear wheel 13 is supported by a rear fork 25, and an engine 26, a transmission mechanism 27, etc. are further disposed below the cargo platform 24.
エンジン２６は、第２図に示すように、クラン
ク軸２６ａに駆動プーリ２８が固設され、この駆
動プーリ２８に巻掛けられたＶベルト２９によつ
て発進クラツチ３０に連結されている。発進クラ
ツチ３０は、駆動側部材に前述の駆動プーリ２８
との間にＶベルト２９を橋架した被動プーリ３１
が固設され、被動側部材が変速機構２７の入力軸
３２と連結している。この発進クラツチ３０は、
回転数が所定回転数を超える時に遠心力の作用で
被動側部材と駆動側部材とが係合してＶベルト２
９を経て伝達されるエンジン動力を変速機構２７
へ出力する。 As shown in FIG. 2, the engine 26 has a drive pulley 28 fixed to a crankshaft 26a, and is connected to a starting clutch 30 by a V-belt 29 wrapped around the drive pulley 28. The starting clutch 30 has the aforementioned driving pulley 28 on the driving side member.
A driven pulley 31 with a V-belt 29 bridged between the
is fixedly installed, and the driven side member is connected to the input shaft 32 of the transmission mechanism 27. This starting clutch 30 is
When the rotational speed exceeds a predetermined rotational speed, the driven side member and the driving side member engage with each other due to the action of centrifugal force, and the V-belt 2
The engine power transmitted through 9 is transmitted to the transmission mechanism 27.
Output to.
変速機構２７は、平行軸式の歯車変速機構から
成り、入力軸３２および副軸３３にそれぞれ変速
歯車３４が設けられて互いに噛合し、また、左方
の駆動軸３５Lに回転自在に支持された出力歯車
３６が副軸３３に固設された変速歯車３４と噛合
している。この変速機構２７は、出力歯車３６が
差動機構３７のケースに一体回転するよう結合さ
れ、エンジン動力を減速して差動機構３７に伝達
する。差動機構３７には左右の駆動軸３５L，３
５Rが連結され、これら駆動軸３５L，３５Rが左
右の後輪１３に連結している。 The transmission mechanism 27 is composed of a parallel shaft type gear transmission mechanism, and transmission gears 34 are provided on the input shaft 32 and the subshaft 33 and mesh with each other, and are rotatably supported on the left drive shaft 35L . An output gear 36 is meshed with a speed change gear 34 fixed to the countershaft 33. In this transmission mechanism 27, an output gear 36 is coupled to a case of a differential mechanism 37 so as to rotate integrally with the case, and the engine power is decelerated and transmitted to the differential mechanism 37. The differential mechanism 37 includes left and right drive shafts 35 L , 3
5 R are connected, and these drive shafts 35 L and 35 R are connected to the left and right rear wheels 13.
また、変速機構２７には、その入力軸３２の右
端に駆動傘歯車３８が一体回転するように設けら
れ、この駆動傘歯車３８に前輪動力取出軸３９に
固設された被動傘歯車４０が噛合している。前輪
動力取出軸３９は、第１図に示すように、後車体
１４の荷台２４の下側に固着されたギアボツクス
４１内の歯車機構に連結している。このギヤボツ
クス４１からは、内部の歯車機構を介して前輪動
力取出軸３９と連結した入力側伝達軸４３が前方
に向かつて延出している。この入力側伝達軸４２
は、荷台２４の下側に軸受４３によつて後車体１
４に回転自在に支持され、前端が第１ユニバーサ
ルジヨイント４４を介して中間伝達軸４５の後端
に揺動可能に連結されている。 Further, in the transmission mechanism 27, a drive bevel gear 38 is provided at the right end of the input shaft 32 so as to rotate integrally with the drive bevel gear 38, and a driven bevel gear 40 fixed to the front wheel power take-off shaft 39 meshes with the drive bevel gear 38. are doing. As shown in FIG. 1, the front wheel power take-off shaft 39 is connected to a gear mechanism in a gear box 41 fixed to the lower side of the cargo platform 24 of the rear vehicle body 14. An input side transmission shaft 43 connected to the front wheel power take-off shaft 39 via an internal gear mechanism extends forward from the gearbox 41. This input side transmission shaft 42
The rear vehicle body 1 is supported by a bearing 43 on the underside of the loading platform 24.
4, and its front end is swingably connected to the rear end of an intermediate transmission shaft 45 via a first universal joint 44.
中間伝達軸４５は、前後方向に延在し、また、
前端が後端より下方に位置して前方下向きに傾斜
すなわち前傾し、フロア１７に取り付けられた軸
受４６によつて前車体１２に回転自在に支持され
ている。この中間伝達軸４５は、後端がジヨイン
ト４４に結合した第１分割軸４５ａと、該第１分
割軸４５ａの前端に後端がワンウエイクラツチ４
７を介して結合した第２分割軸４５ｂと、後端が
該第２分割軸４５ｂの前端に出没可能にスプライ
ン結合した第３分割軸４５ｃと、を備えている。
第３分割軸４５ｃは、前述の軸受４６によつて前
車体１２に支持され、その前端が第２ユニバーサ
ルジヨイント４８によつて出力側伝達軸４９の後
端に連結されている。この第２ユニバーサルジヨ
イント４８と前述の軸受４６とは、前車体１２と
後車体１４との揺動中心軸ｃの延長上またはこの
近傍に近接して配置されている。すなわち、これ
ら第２ユニバーサルジヨイント４８と軸受４６と
は、揺動中心軸ｃが軸線c1，c2間を通過するよう
に配置されている。なお、上述した第２ユニバー
サルジヨイント４８と軸受４６とは一体に組み付
けて揺動中心軸ｃの延長上に配置することも可能
である。 The intermediate transmission shaft 45 extends in the front-back direction, and
The front end is located below the rear end and is tilted forward and downward, and is rotatably supported by the front vehicle body 12 by a bearing 46 attached to the floor 17. The intermediate transmission shaft 45 includes a first divided shaft 45a whose rear end is connected to the joint 44, and a one-way clutch 4 whose rear end is connected to the front end of the first divided shaft 45a.
7, and a third divided shaft 45c, the rear end of which is spline-coupled to the front end of the second divided shaft 45b so as to be retractable.
The third divided shaft 45c is supported by the front vehicle body 12 by the aforementioned bearing 46, and its front end is connected to the rear end of the output side transmission shaft 49 by a second universal joint 48. This second universal joint 48 and the above-mentioned bearing 46 are arranged close to or on an extension of the pivot axis c of the front vehicle body 12 and the rear vehicle body 14. That is, the second universal joint 48 and the bearing 46 are arranged so that the swing center axis c passes between the axes c 1 and c 2 . Note that the second universal joint 48 and the bearing 46 described above can be assembled together and arranged on an extension of the swing center axis c.
出力側伝達軸４９は、前端が後端より上方に位
置し、前方上向きに傾斜（後傾）している。この
出力側伝達軸４９は、第１分割軸４９ａの前端と
第２分割軸４９ｂの後端とをスプライン結合して
伸縮可能に構成され、第１分割軸４９ａの後端が
前述の第２ユニバーサルジヨイント４８に、ま
た、第２分割軸４９ｂの前端がステアリングシヤ
フト１６の前方に配置されたボールジヨイント５
０を介して前輪１１の上方に配設されたギアボツ
クス５１内の歯車機構に連結されている。ギアボ
ツクス５１は、前述のボールジヨイント５０とと
もに前輪１１の上方に配置されたアウタケース６
２内に収容され、このアウタケース６２とともに
ロツド６１によつて支持されている。このギアボ
ツクス５１内には歯車機構が収容され、この歯車
機構の入力軸５２が前述のボールジヨイント５０
に結合し、歯車機構の出力軸に駆動スプロケツト
５３が固設されている。この駆動スプロケツト５
３には、前輪１１に設けられた被動スプロケツト
５４との間にチエーン５５が橋架されている。 The output side transmission shaft 49 has a front end located above a rear end, and is tilted forward and upward (backward tilt). The output side transmission shaft 49 is configured to be extendable and retractable by spline-coupling the front end of the first divided shaft 49a and the rear end of the second divided shaft 49b, and the rear end of the first divided shaft 49a is connected to the second universal shaft 49b. The joint 48 also includes a ball joint 5 in which the front end of the second split shaft 49b is located in front of the steering shaft 16.
0 to a gear mechanism in a gearbox 51 disposed above the front wheels 11. The gearbox 51 includes an outer case 6 disposed above the front wheel 11 together with the aforementioned ball joint 50.
2 and supported together with this outer case 62 by a rod 61. A gear mechanism is housed in this gear box 51, and an input shaft 52 of this gear mechanism is connected to the ball joint 50 described above.
A drive sprocket 53 is fixedly connected to the output shaft of the gear mechanism. This drive sprocket 5
3, a chain 55 is bridged between it and a driven sprocket 54 provided on the front wheel 11.
次に、この実施例の作用を説明する。 Next, the operation of this embodiment will be explained.
この揺動式自動三輪車の動力伝達装置は、エン
ジン２６の動力がＶベルト２９および発進クラツ
チ３０を経て変速機構２７の入力軸３２に入力
し、このエンジン動力が、変速機構２７の歯車
列、差動機構３７および左右の駆動軸３５L，３
５Rを経て後輪１３に伝達され、また、傘歯車３
８，４０、ギアボツクス４１内の歯車機構、入力
伝達軸４２、ワンウエイクラツチ４７、第１ユニ
バーサルジヨイント４４、中間伝達軸４５、第２
ユニバーサルジヨイント４８、出力側伝達軸４
９、ボールジヨイント５０、ギアボツクス５１内
の歯車機構およびチエーン５５を経て前輪１１に
伝達される。このため、この自動三輪車は、前輪
１１と後輪１３の双方を駆動して走行し、積雪路
等の低摩擦係数路面での走行性能が向上する。 In the power transmission device of this rocking type automatic tricycle, the power of the engine 26 is input to the input shaft 32 of the transmission mechanism 27 via the V-belt 29 and the starting clutch 30, and this engine power is transmitted to the gear train of the transmission mechanism 27, Moving mechanism 37 and left and right drive shafts 35 L , 3
5 R to the rear wheel 13, and the bevel gear 3
8, 40, gear mechanism in gearbox 41, input transmission shaft 42, one-way clutch 47, first universal joint 44, intermediate transmission shaft 45, second
Universal joint 48, output side transmission shaft 4
9, the signal is transmitted to the front wheel 11 via the ball joint 50, the gear mechanism in the gear box 51, and the chain 55. Therefore, this tricycle runs by driving both the front wheels 11 and the rear wheels 13, and the running performance on a road surface with a low coefficient of friction such as a snowy road is improved.
また、この動力伝達装置は、前輪１１への動力
の伝達系である中間伝達軸４５にワンウエイクラ
ツチ４７が介設され、このワンウエイクラツチ４
７がエンジン２６から前輪１１への動力伝達のみ
を許容する。このため、旋回時等にタイトコーナ
ーブレーキング現象等の不都合が生じることは無
く、良好な旋回性能を維持できる。 Further, in this power transmission device, a one-way clutch 47 is interposed on an intermediate transmission shaft 45 that is a power transmission system to the front wheels 11.
7 only allows power transmission from the engine 26 to the front wheels 11. Therefore, inconveniences such as tight corner braking phenomenon do not occur when turning, etc., and good turning performance can be maintained.
一方、この動力伝達装置は、前車体１２が後車
体１４に対して揺動中心軸ｃ廻りに揺動すると、
中間伝達軸４５と出力側伝達軸４９とは、中間伝
達軸４５が軸受４６によつて前車体１２に支持さ
れて前車体１２とともに運動するため、それぞれ
第１ユニバーサルジヨイント４４と第２ユニバー
サルジヨイント４８とを中心に揺動し、また、そ
の第２分割軸４５ｂと第３分割軸４５ｃとの間の
スプライン結合部および第１分割軸４９ａと第２
分割軸４９ｂとの間のスプライン結合部によつて
それぞれが伸縮し、前車体１２と後車体１４との
揺動に追従する。しかしながら、中間伝達軸４５
を支持する軸受４６は揺動中心軸ｃの延長上に位
置するため、前車体１２と後車体１４とが揺動し
ても略一定位置を保持する。したがつて、前車体
１２と後車体１４との揺動時に中間伝達軸４５と
出力側伝達軸４９とのそれぞれスプライン結合部
に生じる伸縮量は零または微小であり、前車体１
２と後車体１４との揺動を円滑に行なわせること
ができ、また、そのスプライン結合部の負担が小
さく耐久性の改善が図れ、さらに、スプライン結
合を省略することも可能となる。 On the other hand, in this power transmission device, when the front vehicle body 12 swings around the swing center axis c with respect to the rear vehicle body 14,
The intermediate transmission shaft 45 and the output side transmission shaft 49 are connected to the first universal joint 44 and the second universal joint, respectively, because the intermediate transmission shaft 45 is supported by the front vehicle body 12 by a bearing 46 and moves together with the front vehicle body 12. The spline joint between the second split shaft 45b and the third split shaft 45c and the first split shaft 49a and the second
Each expands and contracts due to the spline connection between the split shaft 49b and follows the rocking motion of the front vehicle body 12 and the rear vehicle body 14. However, the intermediate transmission shaft 45
Since the bearing 46 supporting the is located on an extension of the swing center axis c, it maintains a substantially constant position even when the front vehicle body 12 and the rear vehicle body 14 swing. Therefore, when the front vehicle body 12 and the rear vehicle body 14 swing, the amount of expansion and contraction that occurs in the spline joints of the intermediate transmission shaft 45 and the output transmission shaft 49 is zero or small, and the front vehicle body 1
2 and the rear vehicle body 14, the load on the spline joint is reduced and durability is improved, and the spline joint can be omitted.
なお、上述した実施例では、中間伝達軸４５に
ワンウエイクラツチ４７を介設するが、このワン
ウエイクラツチ４７は前輪１１への動力伝達系の
任意の位置に設けることができることは言うまで
も無く、また、ワンウエイクラツチ４７に替えて
ビスカスカツプリング、クラツチあるいは差動機
構等を設けてパートタイムとフルタイムとの選択
ができることは言うまでも無い。 In the above-described embodiment, the one-way clutch 47 is provided on the intermediate transmission shaft 45. However, it goes without saying that this one-way clutch 47 can be provided at any position in the power transmission system to the front wheels 11. Also, it goes without saying that a viscous coupling, a clutch, a differential mechanism or the like can be provided in place of the one-way clutch 47 to enable a selection between part-time and full-time.
（考案の効果）
以上説明したように、この考案にかかる揺動式
自動三輪車の動力伝達装置によれば、エンジン動
力を前輪へ伝達する伝達軸を前車体に回転自在に
支持する軸受を、前車体と後車体との揺動中心軸
の延長上またはこの近傍に配置したため、前車体
と後車体との揺動時の伝達軸の変位すなわち伝達
軸の揺動を小さくでき、前車体を後車体に対して
円滑に揺動させることが可能になるとともに、伝
達軸のスプライン結合部の負担を軽減して耐久性
の向上を図ることができる。(Effects of the invention) As explained above, according to the power transmission device for a rocking motor tricycle according to this invention, the bearing that rotatably supports the transmission shaft that transmits the engine power to the front wheels on the front body is attached to the front body. Because it is located on the extension of or near the central axis of swing between the front and rear bodies, the displacement of the transmission shaft when the front and rear bodies swing, that is, the swing of the transmission shaft, can be reduced, allowing the front body to move closer to the rear body. It is possible to swing the transmission shaft smoothly against the transmission shaft, and it is also possible to reduce the burden on the spline joint of the transmission shaft and improve durability.
第１図および第２図はこの考案の一実施例にか
かる揺動式自動三輪車の動力伝達装置を示し、第
１図が前輪への動力伝達系を模式化して表す自動
三輪車の側面図、第２図が動力伝達装置の一部断
面図である。
１１……前輪、１２……前車体、１３……後
輪、１４……後車体、１５……ローリングジヨイ
ント、２６……エンジン、２７……変速機構、４
２……入力側伝達軸、４３……軸受、４４……第
１ユニバーサルジヨイント、４５……中間伝達
軸、４６……軸受、４７……ワンウエイクラツ
チ、４８……第２ユニバーサルジヨイント、４９
……出力側伝達軸、５０……ボールジヨイント、
５５……チエーン。
FIGS. 1 and 2 show a power transmission system for a rocking tricycle according to an embodiment of the invention, and FIG. 1 is a side view of the tricycle schematically showing the power transmission system to the front wheels, and FIG. FIG. 2 is a partial sectional view of the power transmission device. 11... Front wheel, 12... Front vehicle body, 13... Rear wheel, 14... Rear vehicle body, 15... Rolling joint, 26... Engine, 27... Transmission mechanism, 4
2... Input side transmission shaft, 43... Bearing, 44... First universal joint, 45... Intermediate transmission shaft, 46... Bearing, 47... One-way clutch, 48... Second universal joint, 49
...Output side transmission shaft, 50...Ball joint,
55...Chain.
Claims (1)
た後車体に対し前一輪を支持するとともに乗員用
シートを備えた前車体をローリング可能に連結
し、前記前輪に前記エンジンの動力を伝達して走
行する揺動式自動三輪車の動力伝達装置におい
て、 前記後車体に軸受により回転自在に支持されて
後端が前記エンジンに連結された入力側伝達軸の
前端を前記前車体に軸受により回転自在に支持さ
れた軸方向に伸縮可能な中間伝達軸の後端に第１
ユニバーサルジヨイントを介して揺動可能に連結
するとともに、前端が前記前輪にボールジヨイン
トを介して連結した軸方向に伸縮可能な出力側伝
達軸の後端に前記中間伝達軸の前端を第２ユニバ
ーサルジヨイントを介して連結し、前記中間伝達
軸を前傾させて前記中間伝達軸を支持する軸受を
前記前車体と前記後車体との揺動中心軸の延長上
またはその近傍に配置したことを特徴とする揺動
式自動三輪車の動力伝達装置。[Scope of Claim for Utility Model Registration] A front vehicle body that supports left and right rear wheels and is equipped with an engine is connected to a rear vehicle body that supports one front wheel and is equipped with a passenger seat in a rollable manner, and that the engine is mounted on the front wheels. In a power transmission device for a rocking tricycle that travels by transmitting power, the front end of an input transmission shaft, which is rotatably supported by a bearing on the rear body and whose rear end is connected to the engine, is connected to the front body. A first
The front end of the intermediate transmission shaft is connected to the rear end of the output transmission shaft which is swingably connected via a universal joint and whose front end is extendable in the axial direction and whose front end is connected to the front wheel via a ball joint. A bearing that is connected via a universal joint and supports the intermediate transmission shaft by tilting the intermediate transmission shaft forward is disposed on or in the vicinity of an extension of a swing center axis of the front vehicle body and the rear vehicle body. A power transmission device for an oscillating automatic tricycle featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20210986U JPH0539998Y2 (en) | 1986-12-25 | 1986-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20210986U JPH0539998Y2 (en) | 1986-12-25 | 1986-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63104193U JPS63104193U (en) | 1988-07-06 |
| JPH0539998Y2 true JPH0539998Y2 (en) | 1993-10-12 |
Family
ID=31166190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20210986U Expired - Lifetime JPH0539998Y2 (en) | 1986-12-25 | 1986-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0539998Y2 (en) |
-
1986
- 1986-12-25 JP JP20210986U patent/JPH0539998Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63104193U (en) | 1988-07-06 |
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