JP2012148659A5

JP2012148659A5 -

Info

Publication number: JP2012148659A5
Application number: JP2011008271A
Authority: JP
Filing date: 2011-01-18
Publication date: 2014-02-27
Anticipated expiration: 2031-01-18

Description

自動２輪車等の燃料タンクの上面後部に給油口を設け、前部に燃料ポンプを内蔵し、その上部を燃料タンク上面へ固定するとともに、この燃料ポンプの上方をポンプカバーで覆い、燃料タンクの周囲へ締結して取付けた燃料タンクカバー構造がある（特許文献１参照）。 A fuel tank is provided at the rear upper surface of a fuel tank of a motorcycle, etc., a fuel pump is built in the front part, the upper part is fixed to the upper surface of the fuel tank, and the upper part of the fuel pump is covered with a pump cover. There is a fuel tank cover structure that is fastened to the periphery of the fuel tank (see Patent Document 1).

上記従来例のように、ポンプカバーを燃料タンクへ締結すると、生産性の向上が困難である。また、給油口を燃料タンクの上面に形成する場合、給油口周辺に給油トレーを設ける場合があるが、これをポンプカバーと別体に形成する場合には部品点数が増加するとともに、組付け工数が増加するので、ポンプカバーと給油トレーの機能を有し、かつ生産性を向上できる燃料タンクカバー構造が求められている。
本願はこのような要請の実現を目的とする。 When the pump cover is fastened to the fuel tank as in the conventional example, it is difficult to improve productivity. In addition, when the fuel filler port is formed on the upper surface of the fuel tank, a fuel tray may be provided around the fuel filler port. However, when this is formed separately from the pump cover, the number of parts increases and the assembly man-hours increase. Therefore, there is a demand for a fuel tank cover structure that has functions of a pump cover and a fuel supply tray and can improve productivity.
The present application aims to realize such a request.

上記課題を解決するため請求項１に記載した発明は、車体フレームに支持される燃料タンクの上面に給油口を設け、さらに燃料タンク内に収容される燃料ポンプの上部に燃料吐出口を設け、燃料タンクの上面に燃料タンクカバーを取付けるとともに、この燃料タンクカバーが燃料ポンプ上部を覆うポンプカバー部を備えている燃料タンクカバー構造において、
この燃料タンクカバーは、給油口の周囲を覆うように設けられたトレー部と前記ポンプカバー部とを一体に形成するとともに、
前記トレー部に前記給油口を囲む開口部を形成し、この開口部に環状の弾性部材を嵌合して、外周部を前記開口部の内周に密着させ、前記弾性部材の内周部を前記給油口周囲に密着させ、
さらに燃料タンクカバーの周囲に前記燃料タンクとの係合部を設け、この係合部と前記弾性部材により、前記燃料タンクカバーを前記燃料タンクに取付けたことを特徴とする。 In order to solve the above-mentioned problem, the invention described in claim 1 is provided with a fuel filler port on an upper surface of a fuel tank supported by a vehicle body frame, and further provided with a fuel discharge port at an upper part of a fuel pump accommodated in the fuel tank , is attached to the fuel tank cover on the upper surface of the fuel tank, the fuel tank cover structure is provided with a pump cover that the fuel tank cover covers the fuel pump top,
The fuel tank cover is integrally formed with a tray portion and the pump cover portion provided so as to cover the periphery of the fuel filler opening,
An opening that surrounds the oil filler opening is formed in the tray, and an annular elastic member is fitted into the opening so that the outer peripheral portion is closely attached to the inner periphery of the opening, and the inner peripheral portion of the elastic member is Adhering around the oil filler opening,
Further, an engaging portion with the fuel tank is provided around the fuel tank cover, and the fuel tank cover is attached to the fuel tank by the engaging portion and the elastic member.

請求項３に記載した発明は上記請求項１又は２において、前記燃料タンクカバーの対向する一対の端部の一方に前記開口部を形成して、前記弾性部材を嵌合し、
他方の端部に、前記係合部の一部をなすとともに、前記燃料タンクに設けられた係合穴へ差込みで係合する第１係合部を形成したことを特徴とする。 According to a third aspect of the present invention, in the first or second aspect, the opening is formed in one of a pair of opposed end portions of the fuel tank cover, and the elastic member is fitted .
A first engaging portion that forms a part of the engaging portion and that engages with an engaging hole provided in the fuel tank is formed at the other end portion.

請求項４に記載した発明によれば、開口部と第１係合部を結ぶ方向と略直交する方向のポンプカバー部の両端部に形成する各第２係合部により、燃料タンクカバーのガタツキを低減することができる。 According to the fourth aspect of the present invention, the fuel tank cover rattles by the second engagement portions formed at both ends of the pump cover portion in a direction substantially orthogonal to the direction connecting the opening and the first engagement portion. Can be reduced.

まず、図１において、車体前部には、図示しない車体フレームの前端部へ回動自在に支持されたフロントフォーク１の下端に前輪２が支持され、上方のハンドル３により操向される。
車体前部は前部車体カバー４で覆われ、その鞍部４ａを挟んでハンドル３の後方にシート５が配置されている。シート５は前後方向へ長いダブルシートであり、前半部がライダーシート５ａ、後半部がピリオンシート５ｂになっている。 First, in FIG. 1, the body front, the front wheel 2 is supported on the lower end of the front fork 1 which is rotatably supported to the front portion of the vehicle body frame (not shown), it is steered by the upper handle 3.
The front portion of the vehicle body is covered with a front vehicle body cover 4, and a seat 5 is disposed behind the handle 3 with the flange portion 4a interposed therebetween. The seat 5 is a double seat that is long in the front-rear direction. The front half is a rider seat 5a and the rear half is a pillion seat 5b.

メインフレーム１１の下方にはエンジン７が支持され、チェーンケース１４内に収納されて見えないチェーンにより後輪８を駆動する。
チェーンケース１４はリヤフォーク１５に固定され、リヤフォーク１５の前端は図では見えないがリヤフレーム１２の下部へ揺動自在に支持され、後端部は緩衝器９によりリヤフレーム１２の屈曲部１２ａと連結（図示省略）されている。 The engine 7 is supported below the main frame 11, and the rear wheel 8 is driven by a chain that is housed in the chain case 14 and cannot be seen.
The chain case 14 is fixed to the rear fork 15, the front end of the rear fork 15 is not shown in the figure, but is supported so as to be swingable to the lower portion of the rear frame 12, and the rear end is bent by a shock absorber 9 on the bent portion 12 a of the rear frame 12. (Not shown) .

図９は燃料タンクカバー３０の左側面図、図１０は燃料タンクカバー３０を斜め前方から示す斜視図、図１１は反転させて裏側を示す斜視図である。
図９に示すように、燃料タンクカバー３０は燃料タンク２０の上面を覆う樹脂製部材であり、全体が一方向へ傾斜し、この例では前方上がりに傾斜配置され、前端部はパッキン３２にて給油口２５ａへ取付けられ、後端部は係合突部５６にて燃料タンク２０の後端部へ取付けられている（図３参照）。 FIG. 9 is a left side view of the fuel tank cover 30, FIG. 10 is a perspective view showing the fuel tank cover 30 obliquely from the front, and FIG. 11 is a perspective view showing the reverse side after being inverted.
As shown in FIG. 9, the fuel tank cover 30 is a resin member that covers the upper surface of the fuel tank 20, and the whole is inclined in one direction. In this example, the fuel tank cover 30 is inclined upward and the front end is formed by a packing 32. The rear end of the fuel tank 20 is attached to the fuel filler 25a, and the rear end of the fuel tank 20 is attached to the rear end of the fuel tank 20 (see FIG. 3).

図１０及び１１に示すように、トレー部４０は燃料タンクカバー３０の前部へ上向きに開放されたトレー側凹部として形成され、ポンプカバー部５０は逆に燃料タンクカバー３０の後部へ下向きに開放されたポンプカバー側凹部として形成されている。
このように反対向きの凹部を組み合わせて同一部材へ一体成形することで、燃料タンクカバー３０を高さ方向で大型化することがない。しかも、剛性を高くすることができるので、機能性と剛性を両立できる。 As shown in FIGS. 10 and 11, the tray part 40 is formed as a tray side recess opened upward to the front part of the fuel tank cover 30, and the pump cover part 50 is opened downward to the rear part of the fuel tank cover 30. The pump cover side recess is formed.
Thus, the fuel tank cover 30 is not increased in size in the height direction by combining the concave portions in the opposite directions and integrally forming the same member. In addition, since the rigidity can be increased, both functionality and rigidity can be achieved.

トレー部４０の後部に形成された傾斜ガイド壁４３は、上方側が後傾する後傾斜面をなすとともに、傾斜ガイド壁４３の上下方向の幅である斜面幅は、車体右側へ行くほど広くなり、逆に、車体左側の排出部４２へ向かって次第に幅が狭くなるように形成されている。但し、傾斜ガイド壁４３の上端部の高さは左右方向で一定であり、底部４５も左右方向では高さが一定であるため、底部４５と傾斜ガイド壁４３との境界線４７が底部４５の矢示Ｃの傾斜方向に対して傾斜することになり、平面視で、底部４５の矢示Ｃの傾斜方向と交わり、車体右側から車体左側へ向かって矢示Ｄで示すように後方傾斜する。 The inclined guide wall 43 formed at the rear portion of the tray portion 40 forms a rear inclined surface whose upper side is inclined backward, and the inclined surface width that is the vertical width of the inclined guide wall 43 becomes wider toward the right side of the vehicle body, On the contrary, the width is gradually narrowed toward the discharge part 42 on the left side of the vehicle body. However, the height of the upper end portion of the inclined guide wall 43 is constant in the left-right direction, and the height of the bottom portion 45 is also constant in the left-right direction, so that the boundary line 47 between the bottom portion 45 and the inclined guide wall 43 is It tilts with respect to the tilt direction of arrow C, intersects with the tilt direction of arrow C on bottom 45 in plan view, and tilts backward as indicated by arrow D from the vehicle body right side to the vehicle body left side.

底部４５を傾斜させるとともに、底部４５と傾斜ガイド壁４３の境界線４７をこのように傾斜させると、トレー部４０内へ溢れた流体は、まず、矢示Ｃのように後傾している底部４５の上を後方の傾斜ガイド壁４３へ向かって流れ、さらに、傾斜ガイド壁４３に達した流体は矢示Ｄ方向へ傾斜ガイド壁４３に沿って最下部４５ａへ向かって流れ、最下部４５ａにてスムーズに排出部４２へ流れ込む。さらに、排出部４２へ溜まった流体は、排出口４２ｃからドレンパイプ４２ａを通ってドレンチューブ３１で外部へ排出される。
このように、底部４５の前後方向における矢示Ｃの傾斜と、境界線４７の矢示Ｄの傾斜により、傾斜ガイド壁４３へ流れて来た流体を傾斜ガイド壁４３により最下部４５ａへスムーズに流して排出部４２へ速やかに導くことができる。 When the bottom portion 45 is inclined and the boundary line 47 between the bottom portion 45 and the inclined guide wall 43 is inclined in this way, the fluid overflowing into the tray portion 40 is first inclined backward as indicated by arrow C. 45 flows toward the rearward inclined guide wall 43, and the fluid reaching the inclined guide wall 43 flows along the inclined guide wall 43 toward the lowermost part 45a in the direction indicated by arrow D and reaches the lowermost part 45a. Smoothly flows into the discharge part 42. Further, the fluid accumulated in the discharge part 42 is discharged to the outside through the drain port 42c, the drain pipe 42a, and the drain tube 31.
Thus, the fluid flowing to the inclined guide wall 43 is smoothly moved to the lowermost portion 45 a by the inclined guide wall 43 by the inclination of the arrow C in the front-rear direction of the bottom 45 and the inclination of the arrow D of the boundary line 47. It is possible to flow to the discharge part 42 promptly.

図１２はパッキン３２を示し、Ａはパッキン３２の平面図、Ｂはパッキン３２をフィラーネック２５の周囲へ弾性嵌合させた状態の断面図である。
Ａに示すように、パッキン３２は弾性を有するリング状のラバーから形成される。パッキン３２の内外周は厚肉部をなし、内周側厚肉部３２ａは中央穴３２ｂを囲むシール部をなし、その内径はフィラーネック２５の外径より若干小さくなっている。外周側厚肉部３２ｃの外径は開口４６の内径よりも若干大きくなっている。 FIG. 12 shows the packing 32, A is a plan view of the packing 32, and B is a cross-sectional view in a state where the packing 32 is elastically fitted around the filler neck 25.
As shown to A, the packing 32 is formed from a ring-shaped rubber having elasticity. The inner and outer peripheries of the packing 32 form a thick portion, the inner peripheral side thick portion 32 a forms a seal portion surrounding the central hole 32 b, and the inner diameter thereof is slightly smaller than the outer diameter of the filler neck 25. The outer diameter of the outer peripheral side thick portion 32 c is slightly larger than the inner diameter of the opening 46.

Claims

A fuel supply port (25a) is provided on the upper surface of the fuel tank (20) supported by the vehicle body frame (10) , and a fuel discharge port (61a) is provided above the fuel pump (60) accommodated in the fuel tank (20 ). the provided, is attached to the fuel tank cover (30) on the upper surface of the fuel tank (20), a fuel tank cover is provided with a fuel tank cover (30) is a fuel pump (60) the pump cover portion covering the upper (50) In structure
The fuel tank cover (30) integrally forms a tray part (40) and the pump cover part (50) provided so as to cover the periphery of the fuel filler opening (25a), and
An opening (46) surrounding the oil filler opening (25a) is formed in the tray part (40), and an annular elastic member (32) is fitted into the opening (46), so that the outer peripheral part is the opening. (46) is closely attached to the inner periphery, the inner peripheral portion of the elastic member (32) is closely attached to the periphery of the oil filler opening (25a) ,
Further, engaging portions (54, 56) with the fuel tank (20) are provided around the fuel tank cover (30), and the fuel tank is formed by the engaging portions (54, 56) and the elastic member (32). A fuel tank cover structure comprising a cover (30) attached to the fuel tank (20).

The second engagement part (54) sandwiches a flange part (24) formed on the periphery of the fuel tank (20) vertically, and has a U-shape toward the inside of the fuel tank (20). The fuel tank cover structure according to claim 4, wherein the fuel tank cover structure is formed.