JP4516520B2 - Power transmission device for motorcycle - Google Patents

Power transmission device for motorcycle Download PDF

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Publication number
JP4516520B2
JP4516520B2 JP2005363846A JP2005363846A JP4516520B2 JP 4516520 B2 JP4516520 B2 JP 4516520B2 JP 2005363846 A JP2005363846 A JP 2005363846A JP 2005363846 A JP2005363846 A JP 2005363846A JP 4516520 B2 JP4516520 B2 JP 4516520B2
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outside air
air introduction
power transmission
transmission device
opening
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JP2007161212A (en
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貴之 ▲柳▼田
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2005363846A priority Critical patent/JP4516520B2/en
Priority to MXPA06014369 priority patent/MXPA06014369A/en
Priority to CNB2006101642716A priority patent/CN100542880C/en
Priority to BRPI0605294 priority patent/BRPI0605294A/en
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  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
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Description

本発明は、動力伝達装置のユニットケース内に外の空気を供給して、動力伝達装置を冷却するようにした自動二輪車の動力伝達装置に関する。   The present invention relates to a power transmission device for a motorcycle in which outside air is supplied into a unit case of the power transmission device to cool the power transmission device.

動力伝達装置のユニットケースを車体フレームに揺動自在に取り付け、ユニットケースに開口部を設け、この開口部から外の空気をユニットケース内へ供給して、動力伝達装置を冷却するようにした自動二輪車の動力伝達装置が知られている（例えば、特許文献１参照。）。
特許第３０６４３８９号公報（第２図） The power transmission unit case is attached to the body frame in a swingable manner, an opening is provided in the unit case, and outside air is supplied into the unit case from the opening to cool the power transmission device. 2. Description of the Related Art A power transmission device for a motorcycle is known (for example, see Patent Document 1).
Japanese Patent No. 3064389 (FIG. 2)

特許文献１の第２図において、車体フレーム１０に揺動自在にユニットスイング型エンジン１１を取り付け、ユニットスイング型エンジン１１の一部を構成する伝動ケース１２にクリーナーホース７７を接続して斜め上方に延ばし、このクリーナーホース７７の先端部に冷却用エアークリーナー７０を接続し、この冷却用エアークリーナー７０をリヤーフェンダ２３に固定する。そして、冷却用エアークリーナー７０から外の空気を導入し、クリーナホース７７に通し、伝動ケース１２に供給し、伝動ケース１２の内部を冷却する。   In FIG. 2 of Patent Document 1, a unit swing type engine 11 is swingably attached to a vehicle body frame 10, and a cleaner hose 77 is connected to a transmission case 12 constituting a part of the unit swing type engine 11 so as to be obliquely upward. The cooling air cleaner 70 is connected to the tip of the cleaner hose 77, and the cooling air cleaner 70 is fixed to the rear fender 23. Then, outside air is introduced from the cooling air cleaner 70, passed through the cleaner hose 77, supplied to the transmission case 12, and the inside of the transmission case 12 is cooled.

しかし、クリーナホース７７を車体後方に延ばし、その先端部を後輪１３の上方に配置したので、後輪１３が巻き上げるごみ等の異物がクリーナホース７７の先端部から侵入する虞がある。このため、特許文献１の技術では、異物の侵入を防止する冷却用エアークリーナー７０を設ける必要があり、車両のコスト上昇につながるという問題がある。   However, since the cleaner hose 77 is extended to the rear of the vehicle body and the tip portion thereof is disposed above the rear wheel 13, there is a possibility that foreign matters such as dust wound up by the rear wheel 13 may enter from the tip portion of the cleaner hose 77. For this reason, in the technique of Patent Document 1, it is necessary to provide a cooling air cleaner 70 that prevents intrusion of foreign matter, which causes a problem that the cost of the vehicle increases.

本発明は、異物の侵入を抑止することができ、併せて、コスト低減を可能にする自動二輪車の動力伝達装置を提供することを課題とする。   It is an object of the present invention to provide a power transmission device for a motorcycle that can suppress the intrusion of foreign matter and at the same time reduce the cost.

請求項１に係る発明は、車体フレームにピボット軸を介して動力伝達装置のユニットケースを揺動自在に取り付けることでエンジンの動力を後輪に伝達するようにし、ユニットケースに開口部を設け、この開口部に外気導入管を接続し、この外気導入管を用いて外の空気をユニットケース内へ供給することで動力伝達装置を冷却するようにした自動二輪車の動力伝達装置において、ユニットケースは、車体フレームの後部を構成するリヤフレームの下方に配置され、開口部の略真上にフレーム部材を設けると共に、このフレーム部材に外気導入管の先端部を固定し、フレーム部材は、同乗者用ステップを支持するステップ支持部材であり、このステップ支持部材は、開口部の略上方に配置されると共に、リヤフレームに締結ボルトにより固定され、先端部に、外気導入管の上部開口を覆う傘部材を配置し、この傘部材をステップ支持部材に取付けることを特徴とする。 According to claim 1 invention, so as to transmit the power of the engine to the rear wheel by attaching the unit case of the power transmission device through a pivot shaft to the vehicle body frame swingably, an opening is provided in the unit case In a power transmission device for a motorcycle, an external air introduction pipe is connected to the opening, and the power transmission device is cooled by supplying outside air into the unit case using the outside air introduction pipe. Is disposed below the rear frame constituting the rear part of the vehicle body frame, and a frame member is provided substantially directly above the opening, and the front end portion of the outside air introduction pipe is fixed to the frame member. A step support member for supporting the step, which is arranged substantially above the opening and fixed to the rear frame with fastening bolts It is, at the tip portion, arranged umbrella member covering the upper opening of the outside air introducing tube, and wherein the attaching the umbrella member to step support member.

請求項２に係る発明では、ステップ支持部材に管部材を固定すると共に、この管部材に先端部を差込んで固定することを特徴とする。 The invention according to claim 2 is characterized in that the tube member is fixed to the step support member, and the distal end portion is inserted and fixed to the tube member .

請求項３に係る発明では、開口部は、ユニットケースの前部に設けられ、ピボット軸は、車両側面視にて、外気導入管の延びる方向で下方に位置することを特徴とする。 The invention according to claim 3 is characterized in that the opening is provided in the front portion of the unit case, and the pivot shaft is positioned downward in the direction in which the outside air introduction pipe extends in a side view of the vehicle .

請求項４に係る発明は、外気導入管は略Ｌ字状を呈し、上下に延びる蛇腹状の形状を有する胴部と、この胴部の下方に備える屈曲部と、この屈曲部から後方へ向け延びる後端部と、を備えることを特徴とする。 The invention according to claim 4, the outside air inlet pipe exhibits a substantially L-shaped, and the body having a bellows-like shape extending vertically, and a bent portion provided below the body portion, directed from the bent portion to the rear And a rear end portion extending .

請求項１に係る発明では、開口部の略真上に設けるフレーム部材に、外気導入管の先端部を固定するので、フレーム部材を後輪から離して設けることで、後輪から外気導入管の先端部を離すことができる。後輪から外気導入管の先端部を離すことによって、後輪が巻き上げるごみ等異物の侵入を抑制することができ、外気導入管の先端部に設けるフィルタは不要となる。フィルタは不要となるため、車両のコストを低減することができる。
加えて、開口部の略真上に設けたフレーム部材に、外気導入管の先端部を固定するので、外気導入管を短くすることができ、外気導入管のコストを低減することができる。 In the invention according to claim 1, since the tip of the outside air introduction tube is fixed to the frame member provided almost directly above the opening, the frame member is provided away from the rear wheel, so that the outside air introduction tube is separated from the rear wheel. The tip can be released. By separating the tip of the outside air introduction tube from the rear wheel, it is possible to suppress the intrusion of foreign matter such as dust that the rear wheel rolls up, and a filter provided at the tip of the outside air introduction tube becomes unnecessary. Since the filter is not necessary, the cost of the vehicle can be reduced.
In addition, since the tip of the outside air introduction tube is fixed to the frame member provided almost directly above the opening, the outside air introduction tube can be shortened and the cost of the outside air introduction tube can be reduced.

また、フレーム部材をステップ支持部材で共用した。すなわち、ステップ支持部材でステップを支持させると共に、外気導入管の先端部を支持させる。
ステップ支持部材とフレーム部材とを各々設ける場合に比較して、請求項２によれば、フレーム部材をステップ支持部材で共用したので、部品数の削減を図ることができる。
さらに、先端部に傘部材を配置するので、ごみ等の異物の侵入を抑制することができる。 Moreover , the frame member was shared by the step support member. That is, the step is supported by the step support member and the tip of the outside air introduction tube is supported.
And a step support member and the frame member as compared with the case where each provided, according to claim 2, since the shared frame member at step support member, it is possible to reduce the number of parts.
Furthermore, since the umbrella member is disposed at the tip, entry of foreign matter such as dust can be suppressed.

請求項２に係る発明では、管部材に外気導入管の先端部を差込んで固定するので、動力伝達装置と共に揺動する外気導入管の先端部を確実に保持することができる。 In the invention which concerns on Claim 2 , since the front-end | tip part of an external air introduction pipe is inserted and fixed to a pipe member, the front-end | tip part of the external air introduction pipe rock | fluctuated with a power transmission device can be hold | maintained reliably.

請求項４に係る発明では、外気導入管は略Ｌ字状に形成した。
異物をＬ字の屈曲部に溜めることによって、異物がユニットケースへ侵入することを防止することができる。 In the invention according to claim 4 , the outside air introduction tube is formed in a substantially L shape.
By collecting the foreign matter in the L-shaped bent portion, it is possible to prevent the foreign matter from entering the unit case.

本発明を実施するための最良の形態を添付図に基づいて以下に説明する。なお、「前」、「後」、「左」、「右」、「上」、「下」は運転者からみた方向を示す。また、図面は符号の向きに見るものとする。
図１は本発明に係る動力伝達装置を備える自動二輪車の側部断面図であり、自動二輪車１０は、車体フレーム１１の後部にピボット軸１２を含むリンク機構１４を介して、車体フレーム１１にパワーユニット１５を揺動自在に取付けた車両である。 The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. “Front”, “rear”, “left”, “right”, “upper”, and “lower” indicate directions viewed from the driver. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side sectional view of a motorcycle equipped with a power transmission device according to the present invention. The motorcycle 10 includes a power unit attached to a vehicle body frame 11 via a link mechanism 14 including a pivot shaft 12 at a rear portion of the vehicle body frame 11. 15 is a vehicle in which 15 is swingably mounted.

パワーユニット１５は、エンジン１６と、このエンジン１６の後方に設けた動力伝達装置１７とからなる。動力伝達装置１７は、ユニットケース１８と図示せぬ可変速機構とからなる。このユニットケース１８を車体フレーム１１に揺動自在に取り付けることでエンジン１６の動力を後輪１９に伝達するようにした。   The power unit 15 includes an engine 16 and a power transmission device 17 provided behind the engine 16. The power transmission device 17 includes a unit case 18 and a variable speed mechanism (not shown). The unit case 18 is swingably attached to the vehicle body frame 11 so that the power of the engine 16 is transmitted to the rear wheel 19.

車体フレーム１１は、前端に設けたヘッドパイプ２１と、このヘッドパイプ２１に取付け斜め下方に延ばしたメインフレーム２２と、メインフレーム２２の後端部に取付けたクロスフレーム２３と、このクロスフレーム２３から斜め後方に立ち上げ車体フレーム１１の後部を構成するリヤフレーム２４Ｌ、２４Ｒ（手前側の符号２４Ｌのみ示す。）とからなる。   The vehicle body frame 11 includes a head pipe 21 provided at the front end, a main frame 22 attached to the head pipe 21 and extending obliquely downward, a cross frame 23 attached to a rear end portion of the main frame 22, and the cross frame 23. It consists of rear frames 24L and 24R (only the reference numeral 24L on the front side is shown) constituting the rear portion of the vehicle body frame 11 that is raised obliquely rearward.

また、自動二輪車１０は、ヘッドパイプ２１に操舵自在にフロントフォーク２５を取付け、このフロントフォーク２５の下端に前輪２８を取付け、フロントフォーク２５の上部に操舵ハンドル２９を取付ける。   In the motorcycle 10, a front fork 25 is attached to the head pipe 21 so as to be steerable, a front wheel 28 is attached to the lower end of the front fork 25, and a steering handle 29 is attached to the upper portion of the front fork 25.

リヤスイングアームを兼ねるパワーユニット１５の後端に後輪１９を取付け、パワーユニット１５の後部及びリヤフレーム２４Ｌのそれぞれにリヤクッションユニット２６を渡して取付ける。２７はクッションブラケットである。   A rear wheel 19 is attached to the rear end of the power unit 15 also serving as a rear swing arm, and a rear cushion unit 26 is attached to each of the rear portion of the power unit 15 and the rear frame 24L. Reference numeral 27 denotes a cushion bracket.

パワーユニット１５とクロスフレーム２３の間に介在させたリンク機構１４は、クロスフレーム２３の近傍に支持軸３１を設け、この支持軸３１から後方にリンク部材３２を延ばし、このリンク部材３２の後端部にピボット軸１２を設けてなる。   The link mechanism 14 interposed between the power unit 15 and the cross frame 23 is provided with a support shaft 31 in the vicinity of the cross frame 23, and a link member 32 is extended rearward from the support shaft 31. Is provided with a pivot shaft 12.

ユニットケース１８の前部１８ａに、外の空気を取り入れる開口部３３を設け、この開口部３３に外気導入管３４を接続した。
すなわち、ユニットケース１８に開口部３３を設け、この開口部３３に外気導入管３４を接続し、この外気導入管３４を用いて外の空気をユニットケース１８内へ供給することで動力伝達装置１７を冷却するようにした。 An opening 33 for taking in outside air is provided in the front portion 18 a of the unit case 18, and an outside air introduction pipe 34 is connected to the opening 33.
That is, an opening 33 is provided in the unit case 18, an outside air introduction pipe 34 is connected to the opening 33, and outside air is supplied into the unit case 18 using the outside air introduction pipe 34, so that the power transmission device 17. It was made to cool.

パワーユニット１５の前部を構成するエンジン１６のシリンダブロック３６には、吸気装置３７及び排気装置３８を接続する。
吸気装置３７は、１次エアクリーナ４１と、この１次エアクリーナ４１に接続した燃料供給装置４２と、この燃料供給装置４２に接続し混合気をエンジン１６に供給する吸気管４３とからなる。リヤフレーム２４Ｌ、２４Ｒ（手前側の２４Ｌのみ図示する。）から図示せぬステーを下げ、これらのステーに１次エアクリーナ４１を取付ける。 An intake device 37 and an exhaust device 38 are connected to the cylinder block 36 of the engine 16 constituting the front portion of the power unit 15.
The intake device 37 includes a primary air cleaner 41, a fuel supply device 42 connected to the primary air cleaner 41, and an intake pipe 43 connected to the fuel supply device 42 and supplying air-fuel mixture to the engine 16. The stays (not shown) are lowered from the rear frames 24L and 24R (only the front 24L is shown), and the primary air cleaner 41 is attached to these stays.

排気装置３８は、エンジン１６に接続し後方に延ばした排気管４５と、この排気管４５に接続し後方に延ばした消音器４６とからなる。
排気装置３８の一部である排気管４５に２次空気を供給する２次空気供給装置５０を付設し、排気装置３８から排出される排気ガスを浄化する。 The exhaust device 38 includes an exhaust pipe 45 connected to the engine 16 and extending rearward, and a silencer 46 connected to the exhaust pipe 45 and extended rearward.
A secondary air supply device 50 that supplies secondary air to the exhaust pipe 45 that is a part of the exhaust device 38 is attached to purify the exhaust gas discharged from the exhaust device 38.

５１は、排気装置３８と２次空気供給装置５０との間を連結する２次空気通路であり、５２は、吸気管４３と２次空気供給装置５０との間を連結する制御配管である。   51 is a secondary air passage that connects between the exhaust device 38 and the secondary air supply device 50, and 52 is a control pipe that connects between the intake pipe 43 and the secondary air supply device 50.

リヤフレーム２４Ｌ、２４Ｒの上方に収納ボックス５３を配置し、この収納ボックス５３の後方に燃料タンク５４を配置し、これらの収納ボックス５３と燃料タンク５４の上方から乗員シート５５を開閉可能に取付ける。
なお、燃料タンク５４とエンジン１６の間を接続する燃料配管などは省略した。
Ｈｅは、収納ボックス５３に収納したヘルメットである。 A storage box 53 is disposed above the rear frames 24L and 24R, a fuel tank 54 is disposed behind the storage box 53, and a passenger seat 55 is attached from above the storage box 53 and the fuel tank 54 so as to be openable and closable.
In addition, the fuel piping etc. which connect between the fuel tank 54 and the engine 16 were abbreviate | omitted.
He is a helmet stored in the storage box 53.

５７は同乗者用ステップ、５８はスタンド、５９はグラブレール、６１はフロントブレーキユニット、６２はフロントフェンダ、６３はカウル部材、６４はリヤフェンダ、６７は２次空気供給管である。   57 is a passenger step, 58 is a stand, 59 is a grab rail, 61 is a front brake unit, 62 is a front fender, 63 is a cowl member, 64 is a rear fender, and 67 is a secondary air supply pipe.

図２は本発明に係る動力伝達装置を備える自動二輪車の要部断面図であり、動力伝達装置１７は、ユニットケース１８を備え、このユニットケース１８は、動力伝達装置１７の内側に外気を取り入れる開口部３３と、この開口部３３に接続し外気をユニットケース１８に導く外気導入管３４と、を備える。   FIG. 2 is a cross-sectional view of a main part of a motorcycle including a power transmission device according to the present invention. The power transmission device 17 includes a unit case 18. The unit case 18 takes outside air inside the power transmission device 17. An opening 33 and an outside air introduction pipe 34 connected to the opening 33 and guiding outside air to the unit case 18 are provided.

そして、ユニットケース１８の前部１８ａに開けた開口部３３に外気導入管３４の後端部３４ｂを接続すると共に、リヤフレーム２４Ｌから延ばしたフレーム部材７１であるステップ支持部材７２に、外気導入管３４の先端部３４ａを接続し固定する。   The rear end 34b of the outside air introduction pipe 34 is connected to the opening 33 opened in the front portion 18a of the unit case 18, and the outside air introduction pipe is connected to the step support member 72, which is a frame member 71 extended from the rear frame 24L. The tip 34a of 34 is connected and fixed.

ステップ支持部材７２は、一端をリヤフレーム２４Ｌに取付け、このリヤフレーム２４Ｌから後斜め下方に延ばし、他端７２ｂに同乗者用ステップ５７を取付けるという部材であると共に、外気導入管３４の先端部３４ａを固定する部材である。   The step support member 72 is a member having one end attached to the rear frame 24L, extending rearwardly and obliquely downward from the rear frame 24L, and attaching the passenger step 57 to the other end 72b, and the front end portion 34a of the outside air introduction pipe 34. It is a member which fixes.

ステップ支持部材７２は、リヤフレーム２４Ｌから斜め後方に延ばした腕部材７４と、この腕部材７４に向けリヤフレーム２４Ｌから延ばし、腕部材７４の下部７４ｃに連結して腕部材７４を補強する補助腕７５とからなり、腕部材７４の下端部７４ｂに同乗者用ステップ５７を固定する部材である。   The step support member 72 includes an arm member 74 that extends obliquely rearward from the rear frame 24L, and an auxiliary arm that extends from the rear frame 24L toward the arm member 74 and is connected to the lower portion 74c of the arm member 74 to reinforce the arm member 74. 75, a member for fixing the passenger's step 57 to the lower end 74b of the arm member 74.

そして、外気導入管３４の先端部３４ａに、傘部材８１を、外気導入管３４の上部開口８２を覆うように配置する。具体的には、補助腕７５から２つのステー部材８３、８４を延ばし、これらのステー部材８３、８４にねじ部材８５、８５を介在させることによって傘部材８１を固定する。   Then, the umbrella member 81 is disposed at the distal end portion 34 a of the outside air introduction pipe 34 so as to cover the upper opening 82 of the outside air introduction pipe 34. Specifically, the two stay members 83, 84 are extended from the auxiliary arm 75, and the umbrella members 81 are fixed by interposing the screw members 85, 85 between these stay members 83, 84.

外気導入管３４は、略Ｌ字形状をもつ筒状の部材であり、鍔部８６を備える先端部３４ａと、蛇腹状の形状を有する胴部８７と、この胴部８７の下方に備える屈曲部８８と、後端部３４ｂと、からなり、先端部３４ａと後端部３４ｂとを連通させる。   The outside air introduction pipe 34 is a cylindrical member having a substantially L-shape, and includes a distal end portion 34 a having a collar portion 86, a barrel portion 87 having a bellows shape, and a bent portion provided below the barrel portion 87. 88 and the rear end portion 34b, and the front end portion 34a and the rear end portion 34b communicate with each other.

ユニットケース１８の開口部３３とステップ支持部材７２との位置関係について、ユニットケース１８に備える開口部３３の略真上にフレーム部材７１としてのステップ支持部材７２を設ける。
９１、９２はホースバンド、９３、９３はステップ支持部材７２をリヤフレーム２４Ｌに固定する締結ボルトである。 Regarding the positional relationship between the opening 33 of the unit case 18 and the step support member 72, a step support member 72 as a frame member 71 is provided substantially directly above the opening 33 provided in the unit case 18.
Reference numerals 91 and 92 denote hose bands, and 93 and 93 denote fastening bolts for fixing the step support member 72 to the rear frame 24L.

フレーム部材７１をステップ支持部材７２で共用した。すなわち、ステップ支持部材７２で同乗者用ステップ５７を支持させると共に、外気導入管３４の先端部３４ａを支持させる。   The frame member 71 is shared by the step support member 72. That is, the step 57 for the passenger is supported by the step support member 72 and the front end portion 34a of the outside air introduction pipe 34 is supported.

ステップ支持部材７１とフレーム部材７２とを各々設ける場合に比較して、請求項２によれば、フレーム部材７２をステップ支持部材７１で共用したので、部品点数の削減を図ることができる。   Compared to the case where the step support member 71 and the frame member 72 are provided, according to the second aspect, since the frame member 72 is shared by the step support member 71, the number of parts can be reduced.

なお、本実施例において、フレーム部材７１は、同乗者用ステップ５７を支持するステップ支持部材７２で共用したが、ユニットケース１８の開口部３３の略真上に配置する他の部材を利用して固定することは差し支えない。   In this embodiment, the frame member 71 is shared by the step support member 72 that supports the passenger's step 57, but other members arranged almost directly above the opening 33 of the unit case 18 are used. It can be fixed.

外気導入管３４の先端部３４ａに傘部材８１を配置するので、ごみ等の異物の侵入を防ぐことができる。
ステップ支持部材７２は、開口部３３の略上方に配置すると共に、外気導入管３４は略Ｌ字状に形成する。
外気導入管３４は略Ｌ字状に形成した。異物をＬ字の屈曲部に溜めることができ、異物がユニットケースに侵入することを防止することができる。 Since the umbrella member 81 is disposed at the distal end portion 34a of the outside air introduction pipe 34, entry of foreign matters such as dust can be prevented.
The step support member 72 is disposed substantially above the opening 33, and the outside air introduction pipe 34 is formed in a substantially L shape.
The outside air introduction tube 34 was formed in a substantially L shape. Foreign matter can be accumulated in the L-shaped bent portion, and foreign matter can be prevented from entering the unit case.

図３は図２の３−３線断面図であり、ステップ支持部材７２に管部材９４をＬ字部材９５を介して取付け、この管部材９４の下方から外気導入管３４の先端部３４ａを差し込むことによって外気導入管３４をステップ支持部材７２側に設けた管部材９４に固定する。
そして、ステップ支持部材７２に管部材９４を固定すると共に、この管部材９４に外気導入管３４の先端部３４ａを差込んで固定する。 3 is a cross-sectional view taken along line 3-3 of FIG. 2, and a tube member 94 is attached to the step support member 72 via an L-shaped member 95, and the distal end portion 34a of the outside air introduction tube 34 is inserted from below the tube member 94. Thus, the outside air introduction pipe 34 is fixed to the pipe member 94 provided on the step support member 72 side.
And while fixing the pipe member 94 to the step support member 72, the front-end | tip part 34a of the external air introduction pipe 34 is inserted and fixed to this pipe member 94.

管部材９４に外気導入管３４の先端部３４ａを差込んで固定し、この先端部３４ａの周囲をホースバンド９１で締結したので、動力伝達装置１７とともに揺動する外気導入管３４の先端部３４ａを確実に固定することができる。   Since the distal end portion 34a of the outside air introduction tube 34 is inserted and fixed to the tube member 94, and the periphery of the distal end portion 34a is fastened by the hose band 91, the distal end portion 34a of the outside air introduction tube 34 that swings with the power transmission device 17 is secured. Can be securely fixed.

胴部８７は蛇腹状の構造を有するため、外気導入管３４はそれ自体で伸縮可能となる。
なお、動力伝達装置（図１の符号１７）の揺動によって伝達された外気導入管３４の揺動は、蛇腹状に形成した胴部８７によって吸収することができる。 Since the trunk portion 87 has a bellows-like structure, the outside air introduction tube 34 can be expanded and contracted by itself.
Note that the swing of the outside air introduction pipe 34 transmitted by the swing of the power transmission device (reference numeral 17 in FIG. 1) can be absorbed by the body 87 formed in a bellows shape.

管部材９４の上端部開口９４ａは、管部材９４の軸方向と略４５°の向きに、且つ、車両の内方に向くように配置すると共に、この開口９４ａを傘部材８１で覆うように、傘部材８１を設ける。   The upper end portion opening 94a of the tube member 94 is disposed so as to be oriented approximately 45 ° with the axial direction of the tube member 94 and toward the inside of the vehicle, and the opening 94a is covered with the umbrella member 81. An umbrella member 81 is provided.

このように、管部材９４の上端部開口９４ａを、泥などのかかり難い同乗者用ステップ（図２の符号５７）の近傍に設けると共に、上端部開口９４ａを傘部材８１で覆うようにしたので、外気導入管３４の内部にごみなどの異物の侵入を抑制することができる。
別途にエアークリーナなどを設ける必要もない。 As described above, the upper end opening 94a of the pipe member 94 is provided in the vicinity of the passenger step (reference numeral 57 in FIG. 2) where mud is not easily applied, and the upper end opening 94a is covered with the umbrella member 81. Intrusion of foreign matter such as dust into the outside air introduction pipe 34 can be suppressed.
There is no need to provide a separate air cleaner.

図４は本発明に係る動力伝達装置の外気導入部の分解斜視図であり、ステップ支持部材７２の一方である腕部材７４に管部材９４を取付け、ステップ支持部材７２の他方である補助腕７５に、傘部材８１を取付けるステー部材８３、８４を各々車両の前方及び車両の内方に延ばし、これらのステー部材８３、８４に開けた孔部８３ｈ、８４ｈに、傘部材８１に開けた座部８１ｖ、８４ｖを合わせ、上方からねじ部材８５、８５で固定する。   FIG. 4 is an exploded perspective view of the outside air introduction portion of the power transmission device according to the present invention. The tube member 94 is attached to the arm member 74 which is one of the step support members 72, and the auxiliary arm 75 which is the other of the step support members 72. Further, stay members 83 and 84 for attaching the umbrella member 81 are respectively extended in front of the vehicle and inward of the vehicle, and seat portions opened in the umbrella member 81 in holes 83h and 84h opened in the stay members 83 and 84, respectively. 81v and 84v are put together and fixed with screw members 85 and 85 from above.

ステップ支持部材７２は、リヤフレーム２４Ｌに取付ける比較的小さな部材である。
このため、ステップ支持部材７２に外気導入管３４の先端部３４ａを固定するための追加工が必要な場合であっても、ステップ支持部材７２は比較的小さな部材であるため、着脱、取り回し及び加工は容易である。具体的には、ステップ支持部材７２に管部材９４と２つのステー部材８３、８４を取付けるだけの構造であるため、外気導入管３４の固定に係るコストの増加を回避することができる。 The step support member 72 is a relatively small member attached to the rear frame 24L.
For this reason, even if additional work is required to fix the distal end portion 34a of the outside air introduction pipe 34 to the step support member 72, the step support member 72 is a relatively small member, so that it can be attached, detached, handled, and processed. Is easy. Specifically, since the structure is such that the pipe member 94 and the two stay members 83 and 84 are simply attached to the step support member 72, an increase in cost related to fixing the outside air introduction pipe 34 can be avoided.

以上に述べた動力伝達装置の作用を次に述べる。
図２に戻って、開口部３３の略真上に設けるフレーム部材７１である同乗者用ステップ支持部材７２に、外気導入管３４の先端部３４ａを固定するので、ステップ支持部材７２をフレーム部材７１を後輪（図１の符号１９）から離して設けることで、後輪１９から外気導入管３４の先端部３４ａを離すことができる。後輪１９から外気導入管３４の先端部３４ａを離すことによって、後輪１９が巻き上げるごみ等異物の侵入を抑制することができ、先端部３４ａに設けるフィルタは不要となる。フィルタは不要となるため、車両のコストを低減することができる。 The operation of the power transmission device described above will be described next.
Returning to FIG. 2, since the distal end portion 34 a of the outside air introduction pipe 34 is fixed to the passenger step support member 72, which is a frame member 71 provided almost directly above the opening 33, the step support member 72 is attached to the frame member 71. Is provided away from the rear wheel (reference numeral 19 in FIG. 1), so that the front end portion 34 a of the outside air introduction pipe 34 can be separated from the rear wheel 19. By separating the front end portion 34a of the outside air introduction pipe 34 from the rear wheel 19, entry of foreign matter such as dust wound up by the rear wheel 19 can be suppressed, and a filter provided at the front end portion 34a becomes unnecessary. Since the filter is not necessary, the cost of the vehicle can be reduced.

加えて、開口部３３の略真上に設けた同乗者用ステップ５７に、外気導入管３４の先端部３４ａを固定するので、外気導入管３４を短くすることができ、外気導入管３４のコストを低減することができる。加えて、吸気部となる先端部３４ａを高い位置に設けたので、ユニットケース１８に水が侵入し難い構造とすることができる。
さらに、本発明の構造によれば、車体フレーム１１に開口を設けることはないため、車体フレーム１１の剛性が低下する虞はない。 In addition, since the distal end portion 34a of the outside air introduction pipe 34 is fixed to the passenger step 57 provided almost directly above the opening 33, the outside air introduction pipe 34 can be shortened, and the cost of the outside air introduction pipe 34 is reduced. Can be reduced. In addition, since the tip end portion 34a serving as an intake portion is provided at a high position, a structure in which water does not easily enter the unit case 18 can be obtained.
Furthermore, according to the structure of the present invention, since no opening is provided in the body frame 11, there is no possibility that the rigidity of the body frame 11 is lowered.

尚、請求項１では、外気導入管の先端部を固定するフレーム部材は、ステップ支持部材とは別に設けても良い。また、フレーム部材は、ステップ支持部材でなくても差し支えない。
請求項２では、外気導入管の先端部は、ステップ支持部材に直接固定しても良い。 According to the first aspect of the present invention, the frame member that fixes the distal end portion of the outside air introduction tube may be provided separately from the step support member. The frame member may not be a step support member.
According to a second aspect of the present invention, the distal end portion of the outside air introduction tube may be directly fixed to the step support member.

請求項１〜３では、傘部材を省略することは差し支えない。
請求項２〜４では、外気導入管の形状は、略Ｌ字状の他、Ｊ字、Ｉ字などの形状でも良い。 In claims 1 to 3, the umbrella member may be omitted.
In the second to fourth aspects, the shape of the outside air introduction tube may be a J shape, an I shape or the like in addition to the substantially L shape.

本発明は、自動二輪車の動力伝達装置に好適である。   The present invention is suitable for a power transmission device for a motorcycle.

本発明に係る動力伝達装置を備える自動二輪車の側部断面図である。1 is a side sectional view of a motorcycle including a power transmission device according to the present invention. 本発明に係る動力伝達装置を備える自動二輪車の要部断面図である。1 is a cross-sectional view of a main part of a motorcycle including a power transmission device according to the present invention. 図２の３−３線断面図である。FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. 本発明に係る動力伝達装置の外気導入部の分解斜視図である。It is a disassembled perspective view of the external air introduction part of the power transmission device according to the present invention.

符号の説明Explanation of symbols

１０…自動二輪車、１１…車体フレーム、１６…エンジン、１７…動力伝達装置、１８…ユニットケース、１９…後輪、３３…開口部、３４…外気導入管、３４ａ…外気導入管の先端部、５７…同乗者用ステップ、７１…フレーム部材、７２ステップ支持部材、８１…傘部材、８２…外気導入管の上部開口、９４…管部材。   DESCRIPTION OF SYMBOLS 10 ... Motorcycle, 11 ... Body frame, 16 ... Engine, 17 ... Power transmission device, 18 ... Unit case, 19 ... Rear wheel, 33 ... Opening part, 34 ... Outside air introduction pipe, 34a ... End part of outside air introduction pipe, 57 ... Passenger step, 71 ... Frame member, 72 step support member, 81 ... Umbrella member, 82 ... Upper opening of outside air introduction pipe, 94 ... Pipe member.

Claims (4)

車体フレーム（１１）にピボット軸（１２）を介して動力伝達装置（１７）のユニットケース（１８）を揺動自在に取り付けることでエンジン（１６）の動力を後輪（１９）に伝達するようにし、前記ユニットケース（１８）に開口部（３３）を設け、この開口部（３３）に外気導入管（３４）を接続し、この外気導入管（３４）を用いて外の空気を前記ユニットケース内へ供給することで前記動力伝達装置（１７）を冷却するようにした自動二輪車（１０）の動力伝達装置において、
前記ユニットケース（１８）は、前記車体フレーム（１１）の後部を構成するリヤフレーム（２４Ｌ、２４Ｒ）の下方に配置され、
前記開口部（３３）の略真上にフレーム部材（７１）を設けると共に、このフレーム部材（７１）に前記外気導入管の先端部（３４ａ）を固定し、
前記フレーム部材（７１）は、同乗者用ステップ（５７）を支持するステップ支持部材（７２）であり、このステップ支持部材（７２）は、前記開口部（３３）の略上方に配置されると共に、前記リヤフレーム（２４Ｌ、２４Ｒ）に締結ボルト（９３）により固定され、
前記先端部（３４ａ）に、前記外気導入管（３４）の上部開口を覆う傘部材（８１）を配置し、この傘部材（８１）を前記ステップ支持部材（７２）に取付けることを特徴とする自動二輪車の動力伝達装置。 Transmitting the power of the engine (16) by attaching pivot axis to the vehicle body frame (11) to (12) power transmission device through the (17) unit case (18) swingably to the rear wheel (19) Thus, an opening (33) is provided in the unit case (18), an outside air introduction pipe (34) is connected to the opening (33), and outside air is supplied to the unit case (18) using the outside air introduction pipe (34). In the power transmission device of the motorcycle (10), the power transmission device (17) is cooled by being supplied into the unit case.
The unit case (18) is disposed below the rear frames (24L, 24R) constituting the rear part of the vehicle body frame (11),
A frame member (71) is provided substantially directly above the opening (33), and the distal end portion (34a) of the outside air introduction tube is fixed to the frame member (71).
The frame member (71) is a step support member (72) that supports the passenger step (57), and the step support member (72) is disposed substantially above the opening (33). , Fixed to the rear frame (24L, 24R) by fastening bolts (93),
An umbrella member (81) covering an upper opening of the outside air introduction pipe (34) is disposed at the tip end portion (34a), and the umbrella member (81) is attached to the step support member (72). Power transmission device for motorcycles. 前記ステップ支持部材（７２）に管部材（９４）を固定すると共に、この管部材（９４）に前記先端部（３４ａ）を差込んで固定することを特徴とする請求項１記載の自動二輪車の動力伝達装置。   2. The motorcycle according to claim 1, wherein a pipe member is fixed to the step support member, and the distal end portion is inserted and fixed to the pipe member. Power transmission device. 前記開口部（３３）は、前記ユニットケース（１８）の前部に設けられ、
前記ピボット軸（１２）は、車両側面視にて、前記外気導入管（３４）の延びる方向で下方に位置することを特徴とする請求項１又は請求項２記載の自動二輪車の動力伝達装置。 The opening (33) is provided at the front of the unit case (18),
The power transmission device for a motorcycle according to claim 1 or 2, wherein the pivot shaft (12) is positioned downward in a direction in which the outside air introduction pipe (34) extends in a side view of the vehicle. 前記外気導入管（３４）は略Ｌ字状を呈し、上下に延びる蛇腹状の形状を有する胴部（８７）と、この胴部（８７）の下方に備える屈曲部（８８）と、この屈曲部（８８）から後方へ向け延びる後端部（３４ｂ）と、を備えることを特徴とする請求項３記載の自動二輪車の動力伝達装置。   The outside air introduction pipe (34) is substantially L-shaped and has a bellows portion (87) having a bellows-like shape extending vertically, a bent portion (88) provided below the trunk portion (87), and the bent portion. The power transmission device for a motorcycle according to claim 3, further comprising a rear end portion (34b) extending rearward from the portion (88).
JP2005363846A 2005-12-16 2005-12-16 Power transmission device for motorcycle Expired - Fee Related JP4516520B2 (en)

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CNB2006101642716A CN100542880C (en) 2005-12-16 2006-12-08 Power transmittion device for motorcycle
BRPI0605294 BRPI0605294A (en) 2005-12-16 2006-12-12 motorcycle power transmission unit

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JP2007161212A (en) 2007-06-28
CN100542880C (en) 2009-09-23

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