JP2016064709A - Structure for fastening fuel tank of saddle riding-type vehicle - Google Patents

Structure for fastening fuel tank of saddle riding-type vehicle Download PDF

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Publication number
JP2016064709A
JP2016064709A JP2014193850A JP2014193850A JP2016064709A JP 2016064709 A JP2016064709 A JP 2016064709A JP 2014193850 A JP2014193850 A JP 2014193850A JP 2014193850 A JP2014193850 A JP 2014193850A JP 2016064709 A JP2016064709 A JP 2016064709A
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fuel tank
seat
load
load receiving
pair
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JP6256278B2 (en
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孝文 中西
Takafumi Nakanishi
孝文 中西
鈴木　和雄
Kazuo Suzuki
和雄 鈴木
潤子 長谷川
Junko Hasegawa
潤子 長谷川
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J35/00—Fuel tanks specially adapted for motorcycles or engine-assisted cycles; Arrangements thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J37/00—Arrangements of fuel supply lines, taps, or the like, on motor cycles or engine-assisted cycles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of a fuel tank and to suppress an increase in the number of components in a structure for fastening a fuel tank of a saddle-riding type vehicle.SOLUTION: In the structure for fastening the fuel tank of the saddle-riding type vehicle that includes a seat on which a driver seats; and the fuel tank 20 supported to a vehicle body frame under the seat, a support member 40 for supporting the fuel tank 20 is disposed to the vehicle body frame and the support member 40 includes a load receiving part 41b for receiving a load from the seat.SELECTED DRAWING: Figure 3

Description

本発明は、鞍乗り型車両の燃料タンク締結構造に関する。   The present invention relates to a fuel tank fastening structure for a saddle-ride type vehicle.

従来、鞍乗り型車両の燃料タンク締結構造において、例えば特許文献１に開示されたものがある。これは、メインフレームから後方へ延びる左右一対のシートレールに燃料タンクを固定し、乗員が着座するシートの荷重受部を燃料タンクの上面に配置したものである。   Conventionally, there is a fuel tank fastening structure of a saddle-ride type vehicle disclosed in Patent Document 1, for example. In this case, a fuel tank is fixed to a pair of left and right seat rails extending rearward from the main frame, and a seat load receiving portion on which an occupant is seated is disposed on the upper surface of the fuel tank.

特開２００７−１１８６２９号公報JP 2007-118629 A

しかしながら特許文献１では、燃料タンクの上面にシートの荷重受部を配置するため、燃料タンクにシートの荷重（シートに着座する乗員の荷重を含む。以下「シート荷重」という。）を受けるだけの剛性を持たせるためには、燃料タンクの板厚を大きくしたり、燃料タンクに補強部材を取り付けたりする必要があり、燃料タンクの重量化や組付工数の増加を招くことがあった。   However, in Patent Document 1, since the seat load receiving portion is disposed on the upper surface of the fuel tank, the seat load (including the load of the occupant seated on the seat; hereinafter referred to as “seat load”) is merely received by the fuel tank. In order to provide rigidity, it is necessary to increase the thickness of the fuel tank or attach a reinforcing member to the fuel tank, which may increase the weight of the fuel tank and increase the number of assembly steps.

そこで本発明は、鞍乗り型車両の燃料タンク締結構造において、燃料タンクの軽量化を図ると共に、組付工数の増加を抑制することを目的とする。   Accordingly, an object of the present invention is to reduce the weight of the fuel tank and suppress an increase in the number of assembling steps in the fuel tank fastening structure of the saddle-ride type vehicle.

上記課題の解決手段として、請求項１に記載した発明は、運転者が着座するシート（８）と、前記シート（８）の下方で車体フレーム（５）に支持される燃料タンク（２０）とを備える鞍乗り型車両（１）の燃料タンク締結構造において、前記車体フレーム（５）には、前記燃料タンク（２０）を支持する支持部材（４０）が配置され、前記支持部材（４０）は、前記シート（８）の荷重を受ける荷重受部（４１ｂ）を有することを特徴とする。
請求項２に記載した発明は、前記支持部材（４０）は、弾性部材（４４）を介して、前記燃料タンク（２０）を前記車体フレーム（５）に支持することを特徴とする。
請求項３に記載した発明は、前記弾性部材（４４）は、筒状に形成され、前記支持部材（４０）は、前記弾性部材（４４）を貫通して前記車体フレーム（５）に当接する筒部（４１ａ）と、前記筒部（４１ａ）から径方向外側に張り出す鍔部（４１ｂ）とを有するカラー（４１）と、前記カラー（４１）の前記筒部（４１ａ）を貫通して前記カラー（４１）と前記車体フレーム（５）とを締結する締結部材（４２，４３）と、を備え、前記鍔部（４１ｂ）は、前記弾性部材（４４）の上に配置され、前記荷重受部（４１ｂ）とされることを特徴とする。
請求項４に記載した発明は、前記鍔部（４１ｂ）は、前記筒部（４１ａ）から前記弾性部材（４４）よりも径方向外側に張り出すように形成されることを特徴とする。
請求項５に記載した発明は、前記シート（８）には、弾性材料により形成されて下方へ突出する弾性凸部（５１）が配置され、前記鍔部（４１ｂ）からは、前記締結部材（４２，４３）が上方に突出し、前記弾性凸部（５１）が前記鍔部（４１ｂ）と当接する当接面（５１ｓ）には、前記締結部材（４２，４３）から離反するように上方に凹む凹部（５１ａ）が形成されることを特徴とする。
請求項６に記載した発明は、前記車体フレーム（５）は、ヘッドパイプ（５ａ）と、前記ヘッドパイプ（５ａ）から後方へ延びるメインフレーム（５ｂ）と、前記メインフレーム（５ｂ）から後方へ延びる左右一対のリヤフレーム（５ｃ）とを含み、前記左右一対のリヤフレーム（５ｃ）の後端部には、前記左右一対のリヤフレーム（５ｃ）の間を渡すリヤクロスフレーム（３２）が配置され、前記リヤクロスフレーム（３２）の上面（３２ａ）には、前記シート（８）の荷重を受ける第二荷重受部（３２ｂ）が配置されることを特徴とする。
請求項７に記載した発明は、前記リヤクロスフレーム（３２）の下面には、前記シート（８）をロックするシートロック（６０）が配置され、前記第二荷重受部（３２ｂ）は、上面視で前記シートロック（６０）を囲むように複数配置されることを特徴とする。
請求項８に記載した発明は、前記車体フレーム（５）は、ヘッドパイプ（５ａ）と、前記ヘッドパイプ（５ａ）から後方へ延びるメインフレーム（５ｂ）と、前記メインフレーム（５ｂ）から後方へ延びる左右一対のリヤフレーム（５ｃ）とを含み、前記荷重受部（４１ｂ）は、前記燃料タンク（２０）の後側で、且つ、前記左右一対のリヤフレーム（５ｃ）の少なくとも一部と上面視で重なる位置に左右一対配置され、前記燃料タンク（２０）よりも前方で、且つ、前記左右一対のリヤフレーム（５ｃ）の少なくとも一部と上面視で重なる位置には、前記シート（８）の荷重を受ける左右一対の第三荷重受部（５ｆ）が配置されることを特徴とする。
請求項９に記載した発明は、前記燃料タンク（２０）の上面（２１ｂ）には、燃料ポンプ（２４）が配置され、前記左右一対の荷重受部（４１ｂ）と前記左右一対の第三荷重受部（５ｆ）とは、上面視で前記燃料ポンプ（２４）を囲むように配置されることを特徴とする。 As a means for solving the above problems, the invention described in claim 1 includes a seat (8) on which a driver is seated, and a fuel tank (20) supported by a vehicle body frame (5) below the seat (8). In the fuel tank fastening structure of the saddle-ride type vehicle (1), the vehicle body frame (5) is provided with a support member (40) that supports the fuel tank (20), and the support member (40) And a load receiving portion (41b) for receiving the load of the sheet (8).
The invention described in claim 2 is characterized in that the support member (40) supports the fuel tank (20) on the vehicle body frame (5) via an elastic member (44).
According to a third aspect of the present invention, the elastic member (44) is formed in a cylindrical shape, and the support member (40) penetrates the elastic member (44) and contacts the vehicle body frame (5). A collar (41) having a tubular portion (41a) and a collar portion (41b) projecting radially outward from the tubular portion (41a), and penetrating through the tubular portion (41a) of the collar (41) Fastening members (42, 43) for fastening the collar (41) and the vehicle body frame (5), and the flange (41b) is disposed on the elastic member (44), and the load It is characterized by being a receiving part (41b).
The invention described in claim 4 is characterized in that the flange portion (41b) is formed so as to protrude outward in the radial direction from the cylindrical portion (41a) to the elastic member (44).
In the invention described in claim 5, the sheet (8) is provided with an elastic convex portion (51) formed of an elastic material and protruding downward, and the fastening member (41b) 42, 43) protrudes upward, and an abutment surface (51s) where the elastic convex portion (51) abuts on the flange portion (41b) is located upward so as to be separated from the fastening member (42, 43). A recess (51a) is formed, which is recessed.
According to a sixth aspect of the present invention, the vehicle body frame (5) includes a head pipe (5a), a main frame (5b) extending rearward from the head pipe (5a), and rearward from the main frame (5b). A rear cross frame (32) that includes a pair of left and right rear frames (5c) that extends between the pair of left and right rear frames (5c) is disposed at the rear end of the pair of left and right rear frames (5c). A second load receiving portion (32b) for receiving the load of the seat (8) is disposed on the upper surface (32a) of the rear cross frame (32).
In a seventh aspect of the present invention, a seat lock (60) for locking the seat (8) is disposed on the lower surface of the rear cross frame (32), and the second load receiving portion (32b) A plurality of the seat locks (60) are arranged so as to surround the view.
According to an eighth aspect of the present invention, the vehicle body frame (5) includes a head pipe (5a), a main frame (5b) extending rearward from the head pipe (5a), and rearward from the main frame (5b). A pair of left and right rear frames (5c) extending, and the load receiving portion (41b) is located on the rear side of the fuel tank (20), and at least a part and the upper surface of the pair of left and right rear frames (5c). A pair of left and right is arranged at a position overlapping with each other in a view, and in front of the fuel tank (20) and at a position overlapping with at least a part of the pair of left and right rear frames (5c) in a top view, the seat (8). A pair of left and right third load receiving portions (5f) that receive the load of is arranged.
According to a ninth aspect of the present invention, a fuel pump (24) is disposed on the upper surface (21b) of the fuel tank (20), and the pair of left and right load receiving portions (41b) and the pair of left and right third loads. The receiving portion (5f) is arranged so as to surround the fuel pump (24) in a top view.

請求項１に記載した発明によれば、車体フレームに燃料タンクを支持する支持部材を配置し、支持部材にシートの荷重を受ける荷重受部を設けることで、支持部材を介して車体フレームにシート荷重が伝わるため、燃料タンクに荷重受部を配置する場合と比較して、燃料タンクにシート荷重が伝わり難くなる。そのため、燃料タンクにシート荷重を受けるだけの剛性を持たせるために、燃料タンクの板厚を大きくしたり、燃料タンクに補強部材を取り付けたりする必要がなくなる。従って、燃料タンクの軽量化を図ると共に、組付工数の増加を抑制することができる。
請求項２に記載した発明によれば、支持部材が弾性部材を介して燃料タンクを車体フレームに支持することで、車体フレームの振動が支持部材及び燃料タンクを介してシートに伝わることを抑制することができる。
請求項３に記載した発明によれば、カラーにおいて筒部から径方向外側に張り出す鍔部を弾性部材の上に配置し荷重受部とすることで、荷重受部のための専用品を別途設ける場合と比較して、簡単な構成でシート荷重を受けることができるため、低コスト化を図ることができる。
請求項４に記載した発明によれば、カラーにおいて鍔部を筒部から弾性部材よりも径方向外側に張り出すように形成することで、鍔部を筒部から弾性部材と同等、又は、弾性部材よりも径方向内側に張り出すように形成する場合と比較して、より広い面でシート荷重を受けることができる。
弾性凸部が荷重受部と当接する当接面を平坦面とした場合、弾性凸部を荷重受部に当接すると、車体フレームの振動が締結部材を介してシートに伝わることがある。これに対し、請求項５に記載した発明によれば、弾性凸部が荷重受部と当接する当接面に、締結部材から離反するように上方に凹む凹部を形成することで、弾性凸部を荷重受部に当接しても、弾性凸部が締結部材から離反するため、車体フレームの振動が締結部材を介してシートに伝わることを抑制することができる。又、弾性凸部が荷重受部と当接する当接面に、締結部材から離反するように上方に凹む凹部を形成することで、締結部材の周囲の鍔部へシート荷重を分散させることができ、締結部材への歪み等を軽減することができる。
請求項６に記載した発明によれば、リヤクロスフレームの上面に、シートの荷重を受ける第二荷重受部を配置することで、燃料タンクを支持する支持部材にのみ荷重受部を設ける場合と比較して、シート後端部に近い位置においてもシート荷重を受けることができるため、シート荷重を広い範囲で分散させることができる。これにより、支持部材の剛性を下げることができるため、支持部材の軽量化を図ることができる。
請求項７に記載した発明によれば、第二荷重受部を、上面視でシートロックを囲むように複数配置することで、第二荷重受部を上面視でシートロックと重なる位置に局所的に配置する場合と比較して、シートロックにシート荷重が伝わり難くなるため、シートロックへの負荷を低減することができる。
請求項８に記載した発明によれば、荷重受部を、燃料タンクの後側で、且つ、左右一対のリヤフレームの少なくとも一部と上面視で重なる位置に左右一対配置し、燃料タンクよりも前方で、且つ、左右一対のリヤフレームの少なくとも一部と上面視で重なる位置に、シートの荷重を受ける左右一対の第三荷重受部を配置することで、燃料タンクを支持する支持部材にのみ荷重受部を設ける場合と比較して、燃料タンクの前後位置でシート荷重を受けることができるため、シート荷重を広い範囲で分散させることができる。これにより、支持部材の剛性を下げることができるため、支持部材の軽量化を図ることができる。
請求項９に記載した発明によれば、燃料ポンプが燃料タンクの上面に配置される場合であっても、左右一対の荷重受部と左右一対の第三荷重受部とを、上面視で燃料ポンプを囲むように配置することで、左右一対の荷重受部と左右一対の第三荷重受部とを、上面視で燃料ポンプと重なる位置に局所的に配置する場合と比較して、燃料ポンプにシート荷重が伝わり難くなるため、燃料ポンプへの負荷を低減することができる。 According to the first aspect of the present invention, the support member that supports the fuel tank is disposed on the body frame, and the seat member is provided on the body frame via the support member by providing the support member with a load receiving portion that receives the load of the seat. Since the load is transmitted, the seat load is hardly transmitted to the fuel tank as compared with the case where the load receiving portion is disposed in the fuel tank. Therefore, it is not necessary to increase the thickness of the fuel tank or attach a reinforcing member to the fuel tank in order to give the fuel tank enough rigidity to receive the seat load. Therefore, it is possible to reduce the weight of the fuel tank and to suppress an increase in assembly man-hours.
According to the invention described in claim 2, the support member supports the fuel tank to the vehicle body frame via the elastic member, thereby suppressing the vibration of the vehicle body frame from being transmitted to the seat via the support member and the fuel tank. be able to.
According to the invention described in claim 3, the collar portion that protrudes radially outward from the cylindrical portion in the collar is arranged on the elastic member so as to be a load receiving portion, whereby a dedicated product for the load receiving portion is separately provided. Compared with the case where it is provided, the seat load can be received with a simple configuration, so that the cost can be reduced.
According to the invention described in claim 4, the collar portion is formed to protrude from the cylindrical portion to the radially outer side than the elastic member in the collar, so that the collar portion is equal to or elastic from the cylindrical portion. Compared with the case where it is formed so as to project radially inward from the member, the seat load can be received on a wider surface.
When the contact surface where the elastic convex portion contacts the load receiving portion is a flat surface, the vibration of the vehicle body frame may be transmitted to the seat via the fastening member when the elastic convex portion contacts the load receiving portion. On the other hand, according to the invention described in claim 5, the elastic convex portion is formed by forming the concave portion recessed upward so as to be separated from the fastening member on the contact surface where the elastic convex portion contacts the load receiving portion. Since the elastic convex portion is separated from the fastening member even if it is brought into contact with the load receiving portion, it is possible to suppress the vibration of the vehicle body frame from being transmitted to the seat via the fastening member. Further, by forming a concave portion that is recessed upward so that the elastic convex portion comes into contact with the load receiving portion so as to be separated from the fastening member, the seat load can be distributed to the flange around the fastening member. The distortion to the fastening member can be reduced.
According to the sixth aspect of the invention, the second load receiving portion that receives the load of the seat is disposed on the upper surface of the rear cross frame, so that the load receiving portion is provided only on the support member that supports the fuel tank; In comparison, since the seat load can be received even at a position close to the rear end of the seat, the seat load can be dispersed in a wide range. Thereby, since the rigidity of a support member can be lowered | hung, the weight reduction of a support member can be achieved.
According to the invention described in claim 7, by arranging a plurality of second load receiving portions so as to surround the seat lock in a top view, the second load receiving portion is locally positioned at a position overlapping the seat lock in a top view. Compared to the case where the seat lock is disposed, the seat load is less likely to be transmitted to the seat lock, so that the load on the seat lock can be reduced.
According to the invention described in claim 8, the load receiving portions are arranged on the rear side of the fuel tank and at a position overlapping with at least a part of the pair of left and right rear frames in a top view, than the fuel tank. By arranging a pair of left and right third load receiving portions that receive the load of the seat in front and at a position that overlaps at least a part of the pair of left and right rear frames in a top view, only the support member that supports the fuel tank Compared with the case where the load receiving portion is provided, the seat load can be received at the front and rear positions of the fuel tank, so that the seat load can be dispersed in a wide range. Thereby, since the rigidity of a support member can be lowered | hung, the weight reduction of a support member can be achieved.
According to the ninth aspect of the present invention, even when the fuel pump is disposed on the upper surface of the fuel tank, the pair of left and right load receiving portions and the pair of left and right third load receiving portions are connected to each other as viewed from above. Compared to the case where the pair of left and right load receiving portions and the pair of left and right third load receiving portions are locally arranged at a position overlapping with the fuel pump in a top view, the fuel pump is disposed so as to surround the pump. Therefore, the load on the fuel pump can be reduced.

実施形態に係る自動二輪車の左側面図である。1 is a left side view of a motorcycle according to an embodiment. 上記自動二輪車の燃料タンクの締結構造においてシート及び左右リヤサイドカバーを取り外した状態の左側面図である。FIG. 3 is a left side view of the motorcycle with a fuel tank fastening structure with a seat and left and right rear side covers removed. 図２のＩＩＩ−ＩＩＩ断面図である。It is III-III sectional drawing of FIG. 上記自動二輪車の燃料タンクの締結構造においてシートを取り外した状態の上面図である。FIG. 3 is a top view of a state in which a seat is removed in the fastening structure of the fuel tank of the motorcycle. 上記自動二輪車のリヤクロスフレームの周辺構造においてシートを取り外した状態の上面図である。FIG. 3 is a top view of a state in which a seat is removed in a peripheral structure of a rear cross frame of the motorcycle. 上記シートの下面図である。It is a bottom view of the sheet. 上記自動二輪車のシートロックの上面図である。It is a top view of the seat lock of the motorcycle. 図７のＶＩＩＩ−ＶＩＩＩ断面図である。It is VIII-VIII sectional drawing of FIG.

以下、本発明の実施形態について図面を参照して説明する。尚、以下の説明における前後左右等の向きは、特に記載が無ければ以下に説明する車両における向きと同一とする。また以下の説明に用いる図中適所には、車両前方を示す矢印ＦＲ、車両左方を示す矢印ＬＨ、車両上方を示す矢印ＵＰが示されている。図中線ＣＬは車体左右中心線を示す。   Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as those in the vehicle described below unless otherwise specified. Further, in the drawings used for the following explanation, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left side of the vehicle, and an arrow UP indicating the upper side of the vehicle are shown. A line CL in the figure indicates a left-right center line of the vehicle body.

図１は、実施形態に係る自動二輪車１（鞍乗型車両）の左側面図である。
図１に示すように、自動二輪車１は、バーハンドル２と、バーハンドル２によって操向される前輪３と、エンジンを含むパワーユニット１０によって駆動される後輪４とを備える。 FIG. 1 is a left side view of a motorcycle 1 (saddle-ride type vehicle) according to the embodiment.
As shown in FIG. 1, a motorcycle 1 includes a bar handle 2, a front wheel 3 steered by the bar handle 2, and a rear wheel 4 driven by a power unit 10 including an engine.

バーハンドル２及び前輪３を含むステアリング系部品は、車体フレーム５前端のヘッドパイプ５ａに操向可能に枢支される。車体フレーム５の前後中央下部にはパワーユニット１０が配置される。パワーユニット１０の後部には、左右一対のスイングアーム６がピボット軸６ａを中心に上下に揺動可能に枢支される。左右スイングアーム６の後部と車体フレーム５の後部との間には、リヤサスペンション７が介装される。   The steering system parts including the bar handle 2 and the front wheel 3 are pivotally supported by the head pipe 5a at the front end of the vehicle body frame 5 so as to be steerable. A power unit 10 is disposed at the front and lower center lower portion of the body frame 5. A pair of left and right swing arms 6 are pivotally supported at the rear portion of the power unit 10 so as to swing up and down about a pivot shaft 6a. A rear suspension 7 is interposed between the rear part of the left and right swing arms 6 and the rear part of the vehicle body frame 5.

例えば、車体フレーム５は、複数種の鋼材を溶接等により一体に結合して形成される。車体フレーム５は、ヘッドパイプ５ａと、ヘッドパイプ５ａから斜め後下方に延びるメインフレーム５ｂと、メインフレーム５ｂの前後中央部に前端が結合されると共にメインフレーム５ｂの前後中央部から斜め後上方に延びる左右リヤフレーム５ｃと、メインフレーム５ｂの後端に前端が結合されると共にメインフレーム５ｂの後端から斜め後上方に延びて左右リヤフレーム５ｃに後端が結合される左右リヤサブフレーム５ｄと、左右リヤフレーム５ｃの前後中央部の間を渡すリヤセンタクロスフレーム３１と、左右リヤフレーム５ｃの後端部の間を渡すリヤクロスフレーム３２とを備える。   For example, the body frame 5 is formed by integrally joining a plurality of types of steel materials by welding or the like. The vehicle body frame 5 includes a head pipe 5a, a main frame 5b extending obliquely rearward and downward from the head pipe 5a, and a front end coupled to the front and rear central portion of the main frame 5b and obliquely rearward and upward from the front and rear central portion of the main frame 5b. A left and right rear frame 5c extending from the rear end of the main frame 5b, and a left and right rear subframe 5d extending obliquely rearward and upward from the rear end of the main frame 5b and coupled to the left and right rear frames 5c. A rear center cross frame 31 passing between the front and rear center portions of the left and right rear frames 5c, and a rear cross frame 32 passing between the rear end portions of the left and right rear frames 5c.

パワーユニット１０は、クランクケース１０ａと、クランクケース１０ａから斜め前上方に緩やかに突出するシリンダ部１０ｂとを備える。パワーユニット１０の上方には、シリンダ部１０ｂに連結されるスロットルボディ２６ａを介してエアクリーナユニット２６（図４参照）が取付けられる。スロットルボディ２６ａには、燃料ポンプ２４（図２参照）から燃料供給配管２４ａ（図２参照）を介して送られる燃料をシリンダ部１０ｂ内に噴射するインジェクタ２６ｂが取り付けられる。   The power unit 10 includes a crankcase 10a and a cylinder portion 10b that gently protrudes obliquely forward and upward from the crankcase 10a. Above the power unit 10, an air cleaner unit 26 (see FIG. 4) is attached via a throttle body 26a connected to the cylinder portion 10b. The throttle body 26a is provided with an injector 26b that injects fuel sent from the fuel pump 24 (see FIG. 2) through the fuel supply pipe 24a (see FIG. 2) into the cylinder portion 10b.

シリンダ部１０ｂには、排気管１１が接続される。排気管１１は、パワーユニット１０の下方を通って、後輪４の右側方に配置されて斜め後上方に延びるマフラ１２（図４参照）に接続される。クランクケース１０ａには、運転者が足を載せるための左右ステップ１３が配置される。   An exhaust pipe 11 is connected to the cylinder portion 10b. The exhaust pipe 11 is connected to a muffler 12 (see FIG. 4) that passes through the lower side of the power unit 10 and is disposed on the right side of the rear wheel 4 and extends obliquely rearward and upward. The crankcase 10a is provided with a left / right step 13 for the driver to put his / her foot on.

シート８は、左右リヤフレーム５ｃによって支持される燃料タンク２０の上に載置される。シート８は、車両前後方向に延びるように形成され、運転者用の前シート８ａと同乗者用の後シート８ｂとを一体に備える。   The seat 8 is placed on the fuel tank 20 supported by the left and right rear frames 5c. The seat 8 is formed to extend in the vehicle front-rear direction, and integrally includes a driver's front seat 8a and a passenger's rear seat 8b.

車体フレーム５は、車体カバー９で覆われる。車体カバー９は、車体フレーム５の前部を覆うフロントカバー９ａと、フロントカバー９ａに連なると共に車体フレーム５の前後中央部側方を覆う左右サイドカバー９ｂと、車体フレーム５の後部を覆う左右リヤサイドカバー９ｃと、左右リヤサイドカバー９ｃの間を上方から覆うリヤアッパカバー９ｄとを備える。   The vehicle body frame 5 is covered with a vehicle body cover 9. The vehicle body cover 9 includes a front cover 9 a that covers the front portion of the vehicle body frame 5, left and right side covers 9 b that are connected to the front cover 9 a and that cover the front and rear center sides of the vehicle body frame 5, and left and right rear sides that cover the rear portion of the vehicle body frame 5. A cover 9c and a rear upper cover 9d that covers the space between the left and right rear side covers 9c from above are provided.

尚、図１において、符号１４はフロントフェンダ、符号１５はヘッドライト、符号１６はリヤフェンダ、符号１７はリヤインナフェンダ、符号１８はグラブレール、符号１９は左右リヤウインカをそれぞれ示す。   In FIG. 1, reference numeral 14 denotes a front fender, reference numeral 15 denotes a headlight, reference numeral 16 denotes a rear fender, reference numeral 17 denotes a rear inner fender, reference numeral 18 denotes a grab rail, and reference numeral 19 denotes left and right rear turn signals.

次に、燃料タンク２０の締結構造について図２〜図５を用いて説明する。
図２は、上記自動二輪車１の燃料タンク２０の締結構造においてシート８及び左右リヤサイドカバー９ｃを取り外した状態の左側面図である。図３は、図２のＩＩＩ−ＩＩＩ断面図である。図４は、上記自動二輪車１の燃料タンク２０の締結構造においてシート８を取り外した状態の上面図である。図５は、上記自動二輪車１のリヤクロスフレーム３２の周辺構造においてシート８を取り外した状態の上面図である。尚、図２〜図４においては、便宜上、シート８の下面に取り付けられる弾性凸部５１を示す。又、図２においては、便宜上、ポンプカバー２５等の図示を省略する。又、図４においては、便宜上、弾性凸部５１、第二弾性凸部５２及び第三弾性凸部５３を示す。 Next, the fastening structure of the fuel tank 20 will be described with reference to FIGS.
FIG. 2 is a left side view of the motorcycle 1 with the fuel tank 20 fastened with the seat 8 and the left and right rear side covers 9c removed. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 4 is a top view showing a state in which the seat 8 is removed in the fastening structure of the fuel tank 20 of the motorcycle 1. FIG. 5 is a top view of the motorcycle 1 with the seat 8 removed from the peripheral structure of the rear cross frame 32. 2 to 4 show the elastic convex portion 51 attached to the lower surface of the sheet 8 for convenience. In FIG. 2, the pump cover 25 and the like are not shown for convenience. 4, for the sake of convenience, the elastic convex portion 51, the second elastic convex portion 52, and the third elastic convex portion 53 are shown.

図２に示すように、燃料タンク２０は、左右リヤフレーム５ｃに沿うように斜め前下方に傾斜して延びる扁平形状をなす。燃料タンク２０は、鋼板等により形成され、斜め前上方に突出する凸形状をなす上半体２１と、斜め後下方に突出する凸形状をなす下半体２２とを備える。   As shown in FIG. 2, the fuel tank 20 has a flat shape extending obliquely forward and downward along the left and right rear frames 5 c. The fuel tank 20 is formed of a steel plate or the like, and includes an upper half 21 that has a convex shape that protrudes obliquely upward and downward, and a lower half 22 that has a convex shape that protrudes obliquely downward and downward.

燃料タンク２０の上半体２１の上面２１ａは、図２の側面視で斜め前下がりに傾斜する。上半体２１の上面２１ａの後部左右中央には、上面２１ａから斜め前上方に突出する有底円筒状の燃料キャップ２３が配置される。燃料キャップ２３は、燃料タンク２０の給油口を形成する給油筒部に着脱可能に取り付けられる。燃料キャップ２３（給油口）の周囲には、油溜り部として下方に凹む凹部２１ｃ（図４参照）が形成される。   The upper surface 21a of the upper half 21 of the fuel tank 20 is inclined obliquely forward and downward as viewed from the side in FIG. A bottomed cylindrical fuel cap 23 that projects obliquely forward and upward from the upper surface 21a is disposed at the rear left and right center of the upper surface 21a of the upper half 21. The fuel cap 23 is detachably attached to a fuel supply cylinder portion that forms a fuel supply port of the fuel tank 20. Around the fuel cap 23 (oil supply port), a recess 21c (see FIG. 4) is formed that is recessed downward as an oil reservoir.

図４に示すように、上半体２１の上面２１ａの前部のポンプ取付面２１ｂには、燃料供給配管２４ａを介して燃料タンク２０内の燃料をエンジンに供給する燃料ポンプ２４が配置される。燃料ポンプ２４には、燃料ポンプ２４の駆動源の電源ケーブル２４ｂが接続される。電源ケーブル２４ｂは、エアクリーナユニット２６の前方に配置されるバッテリユニット２７に向けて引き回される。   As shown in FIG. 4, a fuel pump 24 for supplying the fuel in the fuel tank 20 to the engine via the fuel supply pipe 24a is disposed on the pump mounting surface 21b in front of the upper surface 21a of the upper half 21. . The fuel pump 24 is connected to a power source cable 24b of the drive source of the fuel pump 24. The power cable 24 b is routed toward the battery unit 27 disposed in front of the air cleaner unit 26.

上半体２１の上面２１ａの前部には、燃料ポンプ２４を上方から覆うポンプカバー２５が配置される。ポンプカバー２５は、ボルト等の締結部材４６によってリヤセンタクロスフレーム３１に締結される。ポンプカバー２５には、燃料供給配管２４ａの上方を覆うように上方に膨出する第一凸部２５ａと、電源ケーブル２４ｂの上方を覆うように右後方に膨出する第二凸部２５ｂとが形成される。   A pump cover 25 that covers the fuel pump 24 from above is disposed in front of the upper surface 21 a of the upper half 21. The pump cover 25 is fastened to the rear center cross frame 31 by fastening members 46 such as bolts. The pump cover 25 includes a first convex portion 25a that bulges upward so as to cover the upper side of the fuel supply pipe 24a, and a second convex portion 25b that bulges to the right rear so as to cover the upper portion of the power cable 24b. It is formed.

図２に示すように、燃料タンク２０には、上下半体２１の分割面から周方向外側に突出するフランジ部２０ｆが形成される。燃料タンク２０のフランジ部２０ｆは、上半体２１の周縁部から外方に突出する上フランジ部２１ｆと、下半体２２の周縁部から外方に突出する下フランジ部２２ｆとが溶接等で結合されることにより形成される。   As shown in FIG. 2, the fuel tank 20 is formed with a flange portion 20 f that protrudes outward in the circumferential direction from the dividing surface of the upper and lower half bodies 21. The flange portion 20f of the fuel tank 20 has an upper flange portion 21f protruding outward from the peripheral portion of the upper half body 21 and a lower flange portion 22f protruding outward from the peripheral portion of the lower half body 22 by welding or the like. It is formed by bonding.

燃料タンク２０の上半体２１及びフランジ部２０ｆは、左右リヤフレーム５ｃから斜め前上方に突出する。燃料タンク２０のフランジ部２０ｆは、図２の側面視で、左右リヤフレーム５ｃに沿うように斜め前下方に直線状に延びる。燃料タンク２０の下半体２２は、左右リヤフレーム５ｃ及び左右リヤサブフレーム５ｄとの間で車幅方向内側に配置される。燃料タンク２０の下半体２２の下部は、リヤインナフェンダ１７によって覆われる。   The upper half 21 and the flange portion 20f of the fuel tank 20 protrude obliquely forward and upward from the left and right rear frames 5c. The flange portion 20f of the fuel tank 20 extends linearly diagonally forward and downward along the left and right rear frames 5c in a side view of FIG. The lower half 22 of the fuel tank 20 is disposed on the inner side in the vehicle width direction between the left and right rear frames 5c and the left and right rear subframes 5d. The lower part of the lower half 22 of the fuel tank 20 is covered with the rear inner fender 17.

燃料タンク２０のフランジ部２０ｆの前部は、左右一対の支持部材３０によりリヤセンタクロスフレーム３１に支持される。支持部材３０は、弾性部材４７を介して、燃料タンク２０のフランジ部２０ｆの前部をリヤセンタクロスフレーム３１に支持する。支持部材３０は、カラー４５と、カラー４５とリヤセンタクロスフレーム３１とを締結する締結部材４６とを備える。尚、リヤセンタクロスフレーム３１には、カラー４５とポンプカバー２５（図４参照）とが前記締結部材４６により共締めされる。   The front portion of the flange portion 20 f of the fuel tank 20 is supported on the rear center cross frame 31 by a pair of left and right support members 30. The support member 30 supports the front portion of the flange portion 20 f of the fuel tank 20 on the rear center cross frame 31 via the elastic member 47. The support member 30 includes a collar 45 and a fastening member 46 that fastens the collar 45 and the rear center cross frame 31. The collar 45 and the pump cover 25 (see FIG. 4) are fastened to the rear center cross frame 31 by the fastening member 46.

燃料タンク２０のフランジ部２０ｆの後部は、左右一対の支持部材４０により、左右リヤフレーム５ｃに溶接等で結合されて車幅方向内側に突出するブラケット３３に支持される。支持部材４０は、弾性部材４４を介して、燃料タンク２０のフランジ部２０ｆの後部をブラケット３３に支持する。支持部材４０は、カラー４１と、カラー４１とブラケット３３とを締結する締結部材４２，４３（図３参照）とを備える。   The rear portion of the flange portion 20f of the fuel tank 20 is supported by a bracket 33 that is coupled to the left and right rear frames 5c by welding or the like and protrudes inward in the vehicle width direction by a pair of left and right support members 40. The support member 40 supports the rear portion of the flange portion 20 f of the fuel tank 20 to the bracket 33 via the elastic member 44. The support member 40 includes a collar 41 and fastening members 42 and 43 (see FIG. 3) that fasten the collar 41 and the bracket 33.

以下、支持部材４０の支持構造について図３を用いて説明する。尚、支持部材３０の支持構造については、支持部材４０の支持構造と同様であるため、詳細な説明を省略する。
図３に示すように、支持部材４０は、弾性部材４４を介して、燃料タンク２０のフランジ部２０ｆの後部をブラケット３３に支持する。
弾性部材４４は、ゴム等の弾性材料により、筒状に形成される。弾性部材４４には、上下に開口する貫通孔４４ａが形成される。弾性部材４４の外周面には、径方向内側に凹む溝４４ｂが周方向に沿うように形成される。 Hereinafter, the support structure of the support member 40 will be described with reference to FIG. Since the support structure of the support member 30 is the same as the support structure of the support member 40, detailed description thereof is omitted.
As shown in FIG. 3, the support member 40 supports the rear portion of the flange portion 20 f of the fuel tank 20 to the bracket 33 via the elastic member 44.
The elastic member 44 is formed in a cylindrical shape from an elastic material such as rubber. The elastic member 44 is formed with a through hole 44a that opens up and down. On the outer peripheral surface of the elastic member 44, a groove 44b that is recessed radially inward is formed along the circumferential direction.

燃料タンク２０のフランジ部２０ｆには、上下に開口する貫通孔２０ｈが形成される。フランジ部２０ｆの貫通孔２０ｈは、上フランジ部２１ｆを上下に開口する上貫通孔２１ｈと、下フランジ部２２ｆを上下に開口する下貫通孔２２ｈとを上下に重ね合わせることで形成される。下貫通孔２２ｈの直径は、上貫通孔２１ｈの直径よりも大きい。   A through hole 20 h that opens vertically is formed in the flange portion 20 f of the fuel tank 20. The through hole 20h of the flange portion 20f is formed by vertically superposing an upper through hole 21h that opens up and down the upper flange portion 21f and a lower through hole 22h that opens up and down the lower flange portion 22f. The diameter of the lower through hole 22h is larger than the diameter of the upper through hole 21h.

例えば、フランジ部２０ｆの貫通孔２０ｈに弾性部材４４を押し込み、弾性部材４４の溝４４ｂにフランジ部２０ｆの貫通孔２０ｈに臨む部分を嵌め込むことで、弾性部材４４をフランジ部２０ｆの貫通孔２０ｈに取り付けることができる。   For example, the elastic member 44 is pushed into the through hole 20h of the flange portion 20f, and the portion of the elastic member 44 facing the through hole 20h of the flange portion 20f is fitted into the groove 44b of the elastic member 44, whereby the elastic member 44 is inserted into the through hole 20h of the flange portion 20f. Can be attached to.

尚、下貫通孔２２ｈの直径は、上貫通孔２１ｈの直径よりも小さくてもよいし、上貫通孔２１ｈの直径と同等であってもよい。上下貫通孔２１ｈ，２２ｈの直径は、フランジ部２０ｆの貫通孔２０ｈに弾性部材４４を取り付け可能な範囲で、適宜設定することができる。   The diameter of the lower through hole 22h may be smaller than the diameter of the upper through hole 21h, or may be equal to the diameter of the upper through hole 21h. The diameters of the upper and lower through holes 21h and 22h can be set as appropriate as long as the elastic member 44 can be attached to the through hole 20h of the flange portion 20f.

支持部材４０は、カラー４１と、カラー４１とブラケット３３とを締結する締結部材４２，４３とを備える。
カラー４１は、弾性部材４４の貫通孔４４ａを貫通してブラケット３３の座面３３ａに当接する円筒状の筒部４１ａと、筒部４１ａから径方向外側に張り出す円環状の鍔部４１ｂとを有する。カラー４１の鍔部４１ｂは、弾性部材４４の上に配置され、シート８（図１参照）の荷重を受ける荷重受部として機能する。 The support member 40 includes a collar 41 and fastening members 42 and 43 that fasten the collar 41 and the bracket 33.
The collar 41 includes a cylindrical tube portion 41a that passes through the through hole 44a of the elastic member 44 and contacts the seating surface 33a of the bracket 33, and an annular flange portion 41b that projects radially outward from the tube portion 41a. Have. The collar portion 41b of the collar 41 is disposed on the elastic member 44 and functions as a load receiving portion that receives the load of the seat 8 (see FIG. 1).

筒部４１ａの上下長さは、弾性部材４４の上下長さと同等以下の長さとされる。筒部４１ａの内径は、ボルト４２の軸部４２ｂを貫通可能な長さとされる。筒部４１ａの外径は、弾性部材４４の貫通孔４４ａの内径よりも小さい。   The vertical length of the cylindrical portion 41 a is equal to or shorter than the vertical length of the elastic member 44. The inner diameter of the cylindrical portion 41 a is set to a length that can penetrate the shaft portion 42 b of the bolt 42. The outer diameter of the cylindrical portion 41 a is smaller than the inner diameter of the through hole 44 a of the elastic member 44.

鍔部４１ｂの外径は、弾性部材４４の外径よりも大きい。これにより、鍔部４１ｂの上面でシート荷重を十分に受けることができる。
尚、鍔部４１ｂの外径は、弾性部材４４の外径と同等以下の長さとしてもよい。但し、シート荷重を十分に受ける観点からは、鍔部４１ｂの外径は、弾性部材４４の外径よりも大きくすることが好ましい。 The outer diameter of the flange portion 41 b is larger than the outer diameter of the elastic member 44. Thereby, the seat load can be sufficiently received on the upper surface of the flange portion 41b.
Note that the outer diameter of the flange 41b may be equal to or shorter than the outer diameter of the elastic member 44. However, from the viewpoint of sufficiently receiving the seat load, the outer diameter of the flange portion 41 b is preferably larger than the outer diameter of the elastic member 44.

ボルト４２の頭部４２ａは、鍔部４１ｂの上方に突出する。ボルト４２の軸部４２ｂは、カラー４１の筒部４１ａを貫通してブラケット３３の下方に突出し、ナット４３に螺着される。ボルト４２の軸部４２ｂの上下長さは、カラー４１の筒部４１ａの上下長さよりも大きい。   The head portion 42a of the bolt 42 protrudes above the flange portion 41b. The shaft portion 42 b of the bolt 42 penetrates the tube portion 41 a of the collar 41 and protrudes below the bracket 33 and is screwed to the nut 43. The vertical length of the shaft portion 42 b of the bolt 42 is larger than the vertical length of the tube portion 41 a of the collar 41.

図３では、シート８の下面に取り付けられる弾性凸部５１の断面を示す。弾性凸部５１は、ゴム等の弾性材料により形成されてシート８の下面から下方へ突出する。弾性凸部５１が鍔部４１ｂと当接する当接面５１ｓには、ボルト４２の頭部４２ａから離反するように上方に凹む凹部５１ａが形成される。凹部５１ａは、図３の断面視で、上方に凸のＵ字状に形成される。弾性凸部５１の上部には、シート８の下面に形成される係止孔（不図示）に係止される係止部５１ｂが上方に突出するように一体に形成される。   In FIG. 3, the cross section of the elastic convex part 51 attached to the lower surface of the sheet | seat 8 is shown. The elastic convex portion 51 is formed of an elastic material such as rubber and protrudes downward from the lower surface of the sheet 8. On the abutment surface 51s where the elastic convex portion 51 abuts on the flange portion 41b, a concave portion 51a that is recessed upward is formed so as to be separated from the head portion 42a of the bolt 42. The recess 51a is formed in a U-shape that protrudes upward in the sectional view of FIG. On the upper part of the elastic convex portion 51, a locking portion 51b locked in a locking hole (not shown) formed on the lower surface of the sheet 8 is integrally formed so as to protrude upward.

尚、ボルト４２の頭部４２ａが鍔部４１ｂの上方に突出することに限らない。例えば、ボルト４２の軸部４２ｂがカラー４１の筒部４１ａを貫通して鍔部４１ｂの上方に突出する場合には、ナット４３が鍔部４１ｂの上方に突出してもよい。即ち、ボルト４２及びナット４３のうち何れか一方が鍔部４１ｂの上方に突出すればよい。   Note that the head portion 42a of the bolt 42 is not limited to projecting above the flange portion 41b. For example, when the shaft portion 42b of the bolt 42 penetrates the tube portion 41a of the collar 41 and protrudes above the flange portion 41b, the nut 43 may protrude above the flange portion 41b. That is, any one of the bolt 42 and the nut 43 only has to protrude above the flange 41b.

図２に戻り、燃料タンク２０のフランジ部２０ｆの前後中央部と、左右リヤフレーム５ｃと左右リヤサブフレーム５ｄとの結合部５ｅとの間には、防振部材５０が配置される。防振部材５０は、ゴム等の弾性材料により形成される。防振部材５０の下面には、車幅方向に開口する複数（例えば本実施形態では四つ）の溝５０ａが左右リヤフレーム５ｃに沿うように所定の間隔を空けて配置される。これにより、防振部材５０は適度な弾性力を有し、且つ、左右リヤフレーム５ｃに密着しやすくなるため、車体フレーム５の振動が燃料タンク２０を介してシート８に伝わることを効果的に抑制することができる。   Returning to FIG. 2, the vibration isolating member 50 is disposed between the front and rear center portions of the flange portion 20 f of the fuel tank 20 and the connecting portion 5 e between the left and right rear frames 5 c and the left and right rear subframes 5 d. The vibration isolation member 50 is formed of an elastic material such as rubber. A plurality of (for example, four in this embodiment) grooves 50a that open in the vehicle width direction are arranged on the lower surface of the vibration isolation member 50 at predetermined intervals so as to follow the left and right rear frames 5c. As a result, the vibration isolator 50 has an appropriate elastic force and easily adheres to the left and right rear frames 5c, so that the vibration of the vehicle body frame 5 is effectively transmitted to the seat 8 via the fuel tank 20. Can be suppressed.

左右リヤフレーム５ｃと左右リヤサブフレーム５ｄの後端部との間には、結合部５ｅの前側で左右リヤフレーム５ｃと左右リヤサブフレーム５ｄとを接続する前ガセット３５と、結合部５ｅの後側で左右リヤフレーム５ｃと左右リヤサブフレーム５ｄとを接続する一対の後ガセット３６，３７が溶接等により結合される。   Between the left and right rear frames 5c and the rear end of the left and right rear subframes 5d, a front gusset 35 for connecting the left and right rear frames 5c and the left and right rear subframes 5d on the front side of the coupling portion 5e, and the rear of the coupling portion 5e A pair of rear gussets 36 and 37 connecting the left and right rear frames 5c and the left and right rear subframes 5d on the side are joined by welding or the like.

前ガセット３５には、車幅方向に開口する貫通孔を有するラバーマウント３５ａが取り付けられる。例えば、ラバーマウント３５ａの貫通孔に左右リヤサイドカバー９ｃ（図１参照）の係止部（不図示）を係止させることで、ラバーマウント３５ａを介して前ガセット３５に左右リヤサイドカバー９ｃが取り付けられる。   A rubber mount 35 a having a through hole that opens in the vehicle width direction is attached to the front gusset 35. For example, the left and right rear side covers 9c are attached to the front gusset 35 via the rubber mount 35a by locking the locking portions (not shown) of the left and right rear side covers 9c (see FIG. 1) in the through holes of the rubber mount 35a. .

車幅方向外側に配置される外側後ガセット３６は、図２の側面視でＬ字状に形成される。車幅方向外側に配置される内側後ガセット３７は、図２の側面視で外側後ガセット３６と一部重なると共に、外側後ガセット３６よりも鈍角に屈曲するように形成される。外側後ガセット３６及び内側後ガセット３７には、リヤサスペンション７の上端部７ａが、ボルト等の締結部材３６ａにより回動可能に支持される。尚、外側後ガセット３６には、リヤサスペンション７の上端部７ａとグラブレール１８の一端部１８ａとが前記締結部材３６ａにより共締めされる。グラブレール１８の他端部１８ｂは、ボルト等の締結部材３４ａにより、左右リヤフレーム５ｃに溶接等で結合されて車幅方向内側に突出するブラケット３４に締結される。   The outer rear gusset 36 disposed on the outer side in the vehicle width direction is formed in an L shape in a side view of FIG. The inner rear gusset 37 disposed on the outer side in the vehicle width direction is formed so as to partially overlap with the outer rear gusset 36 in a side view of FIG. On the outer rear gusset 36 and the inner rear gusset 37, the upper end portion 7a of the rear suspension 7 is rotatably supported by a fastening member 36a such as a bolt. The outer rear gusset 36 is fastened together with the upper end 7a of the rear suspension 7 and the one end 18a of the grab rail 18 by the fastening member 36a. The other end portion 18b of the grab rail 18 is fastened to a bracket 34 that is coupled to the left and right rear frames 5c by welding or the like and protrudes inward in the vehicle width direction by a fastening member 34a such as a bolt.

例えば、グラブレール１８は、丸鋼管に曲げ加工やプレス加工等を施すことにより形成される。グラブレール１８は、図２の側面視で一端部１８ａから斜め前上方に傾斜して延びた後に斜め後上方に湾曲して延び、その後、斜め後下方に湾曲して延びて他端部１８ｂに至る。グラブレール１８の他端部１８ｂは、図４の上面視で左右サイドカバー９ｂの切り欠き部１８ｃから露出するように配置される。クラブレール１８は、図４の上面視で車幅方向外側ほど前方に湾曲するＵ字状をなす。   For example, the grab rail 18 is formed by bending or pressing a round steel pipe. In the side view of FIG. 2, the grab rail 18 extends obliquely forward and upward from one end 18a, then curves and extends obliquely rearward and upward, and thereafter curves and extends obliquely rearward and downward to the other end 18b. It reaches. The other end portion 18b of the grab rail 18 is disposed so as to be exposed from the cutout portion 18c of the left and right side covers 9b in a top view of FIG. The club rail 18 has a U-shape that curves forward toward the outer side in the vehicle width direction as viewed from above in FIG.

尚、図２において、符号３８は、シート８（図１参照）を施錠するために用いられるシートロック用のキーシリンダ３８である。キーシリンダ３８は、リヤインナフェンダ１７の左側部に設けられる。キーシリンダ３８には、後述するケーブル６６（図７参照）が接続される。   In FIG. 2, reference numeral 38 denotes a seat lock key cylinder 38 used to lock the seat 8 (see FIG. 1). The key cylinder 38 is provided on the left side of the rear inner fender 17. A cable 66 (see FIG. 7) described later is connected to the key cylinder 38.

次に、シート８の荷重を受ける荷重受部４１ｂ、第二荷重受部３２ｂ及び第三荷重受部５ｆの配置構成について図４及び図５を用いて説明する。
図４及び図５に示すように、車体フレーム５の後部には、シート８の荷重を受ける荷重受部４１ｂ、第二荷重受部３２ｂ及び第三荷重受部５ｆが配置される。
荷重受部４１ｂとしての鍔部４１ｂは、燃料タンク２０の後側で、且つ、図４の上面視で、グラブレール１８の開口の前後中央部に臨むように、左右リヤフレーム５ｃの車幅方向内側部と重なる位置に左右一対配置される。鍔部４１ｂを上面視で左右リヤフレーム５ｃの車幅方向内側部と重なる位置に配置することで、シート８後部の幅を十分に小さくすることができるため、小型化及び軽量化を図ることができる。 Next, the arrangement configuration of the load receiving portion 41b that receives the load of the seat 8, the second load receiving portion 32b, and the third load receiving portion 5f will be described with reference to FIGS.
As shown in FIGS. 4 and 5, a load receiving portion 41 b that receives the load of the seat 8, a second load receiving portion 32 b, and a third load receiving portion 5 f are disposed at the rear portion of the vehicle body frame 5.
The flange portion 41b as the load receiving portion 41b is arranged on the rear side of the fuel tank 20 and in the vehicle width direction of the left and right rear frames 5c so as to face the front-rear center portion of the opening of the grab rail 18 in a top view of FIG. A pair of left and right is arranged at a position overlapping the inner part. The rear portion of the seat 8 can be made sufficiently small by arranging the flange portion 41b at a position overlapping the inner side in the vehicle width direction of the left and right rear frames 5c when viewed from above, so that the size and weight can be reduced. it can.

尚、鍔部４１ｂを上面視で左右リヤフレーム５ｃの車幅方向外側部と重なる位置に配置してもよい。即ち、鍔部４１ｂを上面視で左右リヤフレーム５ｃの少なくとも一部と重なる位置に配置してもよい。但し、小型化及び軽量化を図る観点からは、鍔部４１ｂを上面視で左右リヤフレーム５ｃの車幅方向内側部と重なる位置に配置することが好ましい。   In addition, you may arrange | position the collar part 41b in the position which overlaps with the vehicle width direction outer side part of the left-right rear frame 5c by upper surface view. That is, the collar portion 41b may be disposed at a position overlapping at least a part of the left and right rear frames 5c when viewed from above. However, from the viewpoint of reducing the size and weight, it is preferable to dispose the flange portion 41b at a position overlapping the inner side in the vehicle width direction of the left and right rear frames 5c when viewed from above.

第二荷重受部３２ｂは、リヤクロスフレーム３２の上面３２ａにおいて第二弾性凸部５２が当接する部分であり、図５の上面視で円形状をなす座面である。第二荷重受部３２ｂは、リヤクロスフレーム３２の上面３２ａに配置される。リヤクロスフレーム３２の下面には、シート８（図１参照）をロックするシートロック６０が配置される。第二荷重受部３２ｂは、図４の上面視で、シートロック６０を囲むように複数（例えば本実施形態では三つ）配置される。   The second load receiving portion 32b is a portion with which the second elastic convex portion 52 abuts on the upper surface 32a of the rear cross frame 32, and is a seat surface having a circular shape when viewed from the top in FIG. The second load receiving portion 32 b is disposed on the upper surface 32 a of the rear cross frame 32. A seat lock 60 for locking the seat 8 (see FIG. 1) is disposed on the lower surface of the rear cross frame 32. A plurality (for example, three in the present embodiment) of the second load receiving portions 32b are arranged so as to surround the seat lock 60 in the top view of FIG.

第三荷重受部５ｆは、左右リヤフレーム５ｃにおいて第三弾性凸部５３が当接する部分であり、図４の上面視で長方形状をなす座面である。第三荷重受部５ｆは、燃料タンク２０よりも前方で、且つ、図４の上面視で、左右サイドカバー９ｂの切り欠き部５３ｃから露出するように、左右リヤフレーム５ｃの車幅方向中央部と重なる位置に左右一対配置される。第三荷重受部５ｆを上面視で左右リヤフレーム５ｃの車幅方向中央部と重なる位置に配置することで、シート８前部の幅を十分に小さくすると共にシート荷重を受ける領域を大きくすることができるため、小型化及び軽量化を図ると共にシート荷重を安定して受けることができる。   The third load receiving portion 5f is a portion with which the third elastic convex portion 53 comes into contact with the left and right rear frames 5c, and is a seating surface having a rectangular shape in a top view of FIG. The third load receiving portion 5f is in front of the fuel tank 20 and in the vehicle width direction center portion of the left and right rear frames 5c so as to be exposed from the cutout portions 53c of the left and right side covers 9b in the top view of FIG. A pair of left and right are arranged at positions overlapping with each other. By disposing the third load receiving portion 5f at a position overlapping the central portion in the vehicle width direction of the left and right rear frames 5c when viewed from above, the width of the front portion of the seat 8 is sufficiently reduced and the region receiving the seat load is increased. Therefore, it is possible to reduce the size and weight and to receive the seat load stably.

尚、第三荷重受部５ｆを上面視で左右リヤフレーム５ｃの車幅方向外側部と重なる位置に配置してもよい。即ち、第三荷重受部５ｆを上面視で左右リヤフレーム５ｃの少なくとも一部と重なる位置に配置してもよい。但し、小型化及び軽量化を図ると共にシート荷重を安定して受ける観点からは、第三荷重受部５ｆを上面視で左右リヤフレーム５ｃの車幅方向中央部と重なる位置に配置することが好ましい。   Note that the third load receiving portion 5f may be arranged at a position overlapping the outer side portion in the vehicle width direction of the left and right rear frames 5c when viewed from above. That is, the third load receiving portion 5f may be disposed at a position overlapping at least a part of the left and right rear frames 5c when viewed from above. However, from the viewpoint of reducing the size and weight, and stably receiving the seat load, it is preferable to dispose the third load receiving portion 5f at a position overlapping the central portion in the vehicle width direction of the left and right rear frames 5c in top view. .

左右鍔部４１ｂと左右第三荷重受部５ｆとは、図４の上面視で燃料ポンプ２４を囲むように配置される。左右第三荷重受部５ｆは、左右鍔部４１ｂよりも燃料ポンプ２４の近くに配置される。   The left and right flange portions 41b and the left and right third load receiving portions 5f are arranged so as to surround the fuel pump 24 in a top view of FIG. The left and right third load receiving portions 5f are disposed closer to the fuel pump 24 than the left and right flange portions 41b.

尚、車体フレーム５の後部において、荷重受部４１ｂとしての鍔部４１ｂ、第二荷重受部３２ｂ及び第三荷重受部５ｆの形状や配置数、配置位置などは、上記に限らず、適宜必要に応じて変更してもよい。   In addition, in the rear part of the vehicle body frame 5, the shape, the number of arrangement, the arrangement position, and the like of the collar part 41b as the load receiving part 41b, the second load receiving part 32b, and the third load receiving part 5f are not limited to the above, and are necessary as appropriate. You may change according to.

次に、リヤクロスフレーム３２の周辺構造について図５を用いて説明する。
図５に示すように、リヤクロスフレーム３２の下面には、シートロック６０が配置される。リヤクロスフレーム３２の前方には、燃料タンク２０から後方に膨出して平坦な上面を有する膨出部２１ｄが配置される。膨出部２１ｄは、図４の上面視で車幅方向に長辺を有する長方形状をなす。リヤクロスフレーム３２の後方には、リヤクロスフレーム３２後部、左右リヤサイドカバー９ｃ後部及びリヤアッパカバー９ｄを支持するリヤブラケット７０が配置される。 Next, the peripheral structure of the rear cross frame 32 will be described with reference to FIG.
As shown in FIG. 5, a seat lock 60 is disposed on the lower surface of the rear cross frame 32. In front of the rear cross frame 32, a bulging portion 21d bulging rearward from the fuel tank 20 and having a flat upper surface is disposed. The bulging portion 21d has a rectangular shape having a long side in the vehicle width direction as viewed from above in FIG. A rear bracket 70 that supports the rear portion of the rear cross frame 32, the rear portions of the left and right rear side covers 9c, and the rear upper cover 9d is disposed behind the rear cross frame 32.

例えば、リヤブラケット７０の前方に突出する突出部７１は、ボルト等の締結部材９０により、リヤクロスフレーム３２の後部に締結される。左右リヤサイドカバー９ｃ後部及びリヤアッパカバー９ｄは、トリムクリップ９１等の取付部材により、リヤブラケット７０の上部に取り付けられる。   For example, the protruding portion 71 protruding forward of the rear bracket 70 is fastened to the rear portion of the rear cross frame 32 by a fastening member 90 such as a bolt. The rear portions of the left and right rear side covers 9c and the rear upper cover 9d are attached to the upper portion of the rear bracket 70 by attachment members such as a trim clip 91.

尚、図５において、符号３２ｈは中心線ＣＬの右側でリヤクロスフレーム３２を上下に開口すると共にストライカ８７ａ（図６参照）を挿通可能に前後に延びる貫通孔、符号３２ｉは中心線ＣＬと重なる位置でリヤクロスフレーム３２を上下に開口すると共にシートロック６０のピン６１ｉを挿通する円形状の貫通孔、符号３２ｉは貫通孔３２ｉの後方で中心線ＣＬと重なる位置でリヤクロスフレーム３２を上下に開口する円形状の貫通孔をそれぞれ示す。   In FIG. 5, reference numeral 32 h is a through hole that opens up and down the rear cross frame 32 on the right side of the center line CL and extends through the striker 87 a (see FIG. 6), and reference numeral 32 i overlaps the center line CL. The rear cross frame 32 is opened up and down at a position, and a circular through hole through which the pin 61i of the seat lock 60 is inserted. Reference numeral 32i denotes the rear cross frame 32 up and down at a position overlapping the center line CL behind the through hole 32i. Open circular through-holes are shown respectively.

次に、シート８の下面の構造について図６を用いて説明する。
図６は、上記シート８の下面図である。
図６に示すように、シート８は、前後シート８ａ，８ｂを下方から支持するシート本体８０を備える。 Next, the structure of the lower surface of the sheet 8 will be described with reference to FIG.
FIG. 6 is a bottom view of the sheet 8.
As shown in FIG. 6, the seat 8 includes a seat body 80 that supports the front and rear seats 8 a and 8 b from below.

シート本体８０は、図６の下面視で前後に延びる扁平形状を有する。シート本体８０の下面には、図６の下面視で格子状をなすリブ８０ｒが形成される。リブ８０ｒは、シート本体８０の前後中央部で平面視正方形状をなすと共に、シート本体８０の前後端部で平面視長方形をなすように形成される。   The seat body 80 has a flat shape that extends back and forth in the bottom view of FIG. On the lower surface of the sheet main body 80, ribs 80r having a lattice shape in the lower surface view of FIG. 6 are formed. The ribs 80r are formed so as to form a square shape in plan view at the front and rear central portions of the seat body 80 and to form a rectangular shape in plan view at the front and rear end portions of the seat body 80.

シート本体８０の前部には、図６の下面視で車幅方向に延びるヒンジ取付部８１が形成される。ヒンジ取付部８１には、シート８の前端部を車体フレーム５に回動可能に軸支するヒンジ部（図示略）が取り付けられる。   A hinge mounting portion 81 extending in the vehicle width direction when viewed from the bottom of FIG. 6 is formed at the front portion of the seat body 80. A hinge portion (not shown) that pivotally supports the front end portion of the seat 8 on the vehicle body frame 5 is attached to the hinge attachment portion 81.

シート本体８０の前部において車幅方向外側には、平面視で第三荷重受部５ｆ（図４参照）と重なる位置で、下方に膨出する左右一対の膨出部８２が形成される。膨出部８２には、第三弾性凸部５３の係止部５３ｂ（図４参照）が係止される係止孔（不図示）を有する座面８２ａが形成される。座面８２ａは、図６の下面視で、第三弾性凸部５３の当接面５３ｓよりも一回り大きい長方形状をなす。   A pair of left and right bulging portions 82 that bulge downward are formed on the outer side in the vehicle width direction at the front portion of the seat body 80 at a position overlapping the third load receiving portion 5f (see FIG. 4) in plan view. The bulging portion 82 is formed with a seating surface 82 a having a locking hole (not shown) in which the locking portion 53 b (see FIG. 4) of the third elastic convex portion 53 is locked. The seat surface 82a has a rectangular shape that is slightly larger than the contact surface 53s of the third elastic convex portion 53 in the bottom view of FIG.

左右膨出部８２の間には、図６の下面視で車幅方向に直線状に延びる前後一対のリブ８２ｒが形成される。前後リブ８２ｒの間の間隔は、座面８２ａの前後長さ（長辺の長さ）よりも小さい。   A pair of front and rear ribs 82r that extend linearly in the vehicle width direction when viewed from the bottom of FIG. The interval between the front and rear ribs 82r is smaller than the front and rear length (long side length) of the seating surface 82a.

シート本体８０の後部において車幅方向外側には、平面視で荷重受部４１ｂとしての鍔部４１ｂ（図４参照）と重なる位置で、下方に膨らむ左右一対の膨出部８３が形成される。膨出部８３には、弾性凸部５１の係止部５１ｂ（図４参照）が係止される係止孔（不図示）を有する座面８３ａが形成される。座面８３ａは、図６の下面視で、弾性凸部５１の当接面５１ｓよりも一回り大きい円形状をなす。   A pair of left and right bulging portions 83 that bulge downward are formed on the outer side in the vehicle width direction at the rear portion of the seat body 80 at a position overlapping the flange portion 41b (see FIG. 4) as the load receiving portion 41b in plan view. The bulging portion 83 is formed with a seating surface 83a having a locking hole (not shown) in which the locking portion 51b (see FIG. 4) of the elastic convex portion 51 is locked. The seat surface 83a has a circular shape that is slightly larger than the contact surface 51s of the elastic convex portion 51 in the bottom view of FIG.

左右膨出部８３の車幅方向外側には、図６の下面視で前後に直線状に延びる左右一対のリブ８３ｒが形成される。左右リブ８３ｒの間の間隔は、前後リブ８２ｒの車幅方向の長さよりも大きい。   On the outer side in the vehicle width direction of the left and right bulging portions 83, a pair of left and right ribs 83r extending linearly back and forth in the bottom view of FIG. The interval between the left and right ribs 83r is larger than the length of the front and rear ribs 82r in the vehicle width direction.

シート本体８０の後部には、平面視で第二荷重受部３２ｂ（図５参照）と重なる位置で、下方に膨出する複数（例えば本実施形態では三つ）の膨出部８４が形成される。膨出部８４には、第二弾性凸部５２の係止部５２ｂ（図４参照）が係止される係止孔（不図示）を有する座面８４ａが形成される。座面８４ａは、図６の下面視で、第二弾性凸部５２の当接面５２ｓよりも一回り大きい円形状をなす。第二弾性凸部５２の当接面５２ｓには、車幅方向に開口する複数（例えは本実施形態では三つ）の溝５２ａが前後に所定の間隔を空けて形成される。   A plurality of (for example, three in this embodiment) bulging portions 84 bulge downward are formed at the rear portion of the seat body 80 at positions overlapping the second load receiving portion 32b (see FIG. 5) in plan view. The The bulging portion 84 is formed with a seating surface 84a having a locking hole (not shown) in which the locking portion 52b (see FIG. 4) of the second elastic convex portion 52 is locked. The seat surface 84a has a circular shape that is slightly larger than the contact surface 52s of the second elastic convex portion 52 in the bottom view of FIG. A plurality of (for example, three in this embodiment) grooves 52a that open in the vehicle width direction are formed on the contact surface 52s of the second elastic convex portion 52 at a predetermined interval in the front-rear direction.

三つの膨出部８４の車幅方向外側には、図６の下面視で、後側ほど車幅方向内側に位置するように傾斜して直線状に延びる左右一対のリブ８４ｒが形成される。左右リブ８４ｒの前後長さは、三つの膨出部８４の前後間隔（左右一対の前側膨出部８４の前端と後側膨出部８４の後端との間の間隔）よりも大きい。   On the outer side in the vehicle width direction of the three bulging portions 84, a pair of left and right ribs 84r extending in a straight line is formed so as to incline so as to be located inward in the vehicle width direction as viewed from the bottom in FIG. The front-rear length of the left and right ribs 84r is greater than the front-rear spacing of the three bulging portions 84 (the spacing between the front ends of the pair of left and right front bulging portions 84 and the rear ends of the rear bulging portions 84).

シート本体８０の前後中央部には、平面視で燃料タンク２０（図４参照）と重なる位置で、上方に凹むタンク凹部８５が形成される。タンク凹部８５には、平面視で燃料キャップ２３（図４参照）と重なる位置で、タンク凹部８５よりも更に上方に凹むキャップ凹部８５ａが形成される。キャップ凹部８５ａは、図６の下面視で、燃料キャップ２３よりも一回り大きい円形状をなす。キャップ凹部８５ａとタンク凹部８５との境界部分には、図６の下面視でキャップ凹部８５ａよりも一回り大きい円形状をなして下方に突出するリブ８５ｒが形成される。   A tank recess 85 that is recessed upward is formed at a position overlapping the fuel tank 20 (see FIG. 4) in a plan view at the front and rear center of the seat body 80. The tank recess 85 is formed with a cap recess 85a that is recessed further upward than the tank recess 85 at a position overlapping the fuel cap 23 (see FIG. 4) in plan view. The cap recess 85a has a circular shape that is slightly larger than the fuel cap 23 in the bottom view of FIG. At the boundary between the cap recess 85a and the tank recess 85, a rib 85r is formed that has a circular shape that is slightly larger than the cap recess 85a when viewed from below in FIG.

シート本体８０の前後中央部には、平面視でポンプカバー２５（図４参照）と重なる位置で、上方に凹むポンプ凹部８６が形成される。ポンプ凹部８６には、平面視で第一凸部２５ａ（図４参照）と重なる位置でポンプ凹部８６よりも更に上方に凹む第一凹部８６ａと、平面視で第二凸部２５ｂ（図４参照）と重なる位置でポンプ凹部８６から右後方に凹む第二凹部８６ｂとが形成される。   A pump recess 86 that is recessed upward is formed at a position overlapping the pump cover 25 (see FIG. 4) in a plan view at the front and rear center of the seat body 80. The pump concave portion 86 includes a first concave portion 86a that is recessed further upward than the pump concave portion 86 at a position overlapping the first convex portion 25a (see FIG. 4) in plan view, and a second convex portion 25b (see FIG. 4) in plan view. ) And a second recess 86b that is recessed from the pump recess 86 to the right rear.

シート本体８０の後部において、三つの膨出部８４に囲まれる領域には、図６の下面視で右側膨出部８４と一部重なる矩形状をなすストライカ取付部８７が形成される。ストライカ取付部８７には、シート８をシートロック６０（図５参照）にロックするためのストライカ８７ａが取り付けられる。   In the rear portion of the seat main body 80, a striker mounting portion 87 having a rectangular shape partially overlapping with the right bulge portion 84 in a bottom view of FIG. 6 is formed in an area surrounded by the three bulge portions 84. A striker 87a for locking the seat 8 to the seat lock 60 (see FIG. 5) is attached to the striker attaching portion 87.

尚、シート８下面において、ヒンジ取付部８１、膨出部８２，８３，８４、リブ８０ｒ，８２ｒ，８３ｒ，８４ｒ、タンク凹部８５、ポンプ凹部８６及びストライカ取付部８７の形状や配置数、配置位置などは、上記に限らず、適宜必要に応じて変更してもよい。   In addition, on the lower surface of the seat 8, the shape, the number of arrangements, and the arrangement positions of the hinge attaching portion 81, the bulging portions 82, 83, 84, the ribs 80r, 82r, 83r, 84r, the tank recessed portion 85, the pump recessed portion 86, and the striker attaching portion 87. The above is not limited to the above, and may be changed as necessary.

次に、シートロック６０の構成について図７及び図８を用いて説明する。
図７は、上記自動二輪車１のシートロック６０の上面図である。図８は、図７のＶＩＩＩ−ＶＩＩＩ断面図である。
図７及び図８に示すように、シートロック６０は、シートロック６０の構成要素を収容するシートロック本体６１と、シートロック本体６１のガイド部６１ａに沿うように摺動してストライカ８７ａのロック状態を維持又は解除するスライダ６２と、ストライカ８７ａのロック状態を解除するためのケーブル６６を接続するケーブルプレート６３と、スライダ６２の摺動部６２ａを上方から覆うカバープレート６４と、スライダ６２のロック部６２ｂに弾性力を作用させてストライカ８７ａのロック状態を維持するスプリング６５とを備える。 Next, the configuration of the seat lock 60 will be described with reference to FIGS.
FIG. 7 is a top view of the seat lock 60 of the motorcycle 1. 8 is a sectional view taken along line VIII-VIII in FIG.
As shown in FIGS. 7 and 8, the seat lock 60 includes a seat lock main body 61 that accommodates the components of the seat lock 60, and slides along the guide portion 61a of the seat lock main body 61 to lock the striker 87a. The slider 62 that maintains or releases the state, the cable plate 63 that connects the cable 66 for releasing the locked state of the striker 87a, the cover plate 64 that covers the sliding portion 62a of the slider 62 from above, and the lock of the slider 62 And a spring 65 that applies an elastic force to the portion 62b to maintain the locked state of the striker 87a.

シートロック本体６１は、スライダ６２を案内するガイド部６１ａと、スライダ６２及びケーブルプレート６３を収容する収容部６１ｂとを備える。シートロック本体６１には、車幅方向に開口してケーブル６６を進退自在に通過させる貫通孔６１ｃと、ストライカ８７ａを収容する収容溝６１ｈと、上方に突出するピン６１ｉと、上下に開口する貫通孔６１ｇとを備える。   The seat lock body 61 includes a guide portion 61 a that guides the slider 62, and a housing portion 61 b that houses the slider 62 and the cable plate 63. The seat lock body 61 has a through hole 61c that opens in the vehicle width direction and allows the cable 66 to pass therethrough, a receiving groove 61h that houses the striker 87a, a pin 61i that protrudes upward, and a through hole that opens up and down. A hole 61g.

例えば、シートロック本体６１に各構成要素を収容した状態で、図５に示すように、ピン６１ｉをリヤクロスフレーム３２の貫通孔３２ｉに挿通し、その後、リヤクロスフレーム３２の貫通孔３２ｇ及びシートロック本体６１の貫通孔６１ｇにボルト等の締結部材を挿通してナット等に螺着することで、シートロック６０とリヤクロスフレーム３２とが取り付けられる。   For example, with each component housed in the seat lock body 61, as shown in FIG. 5, the pin 61i is inserted into the through hole 32i of the rear cross frame 32, and then the through hole 32g of the rear cross frame 32 and the seat The seat lock 60 and the rear cross frame 32 are attached by inserting a fastening member such as a bolt into the through hole 61g of the lock body 61 and screwing it onto a nut or the like.

図７及び図８に示すように、スライダ６２は、シートロック本体６１のガイド部６１ａに沿うように摺動する摺動部６２ａと、ストライカ８７ａのロック状態を維持又は解除するロック部６２ｂと、ケーブルプレート６３に溶接等で結合されるスライダ本体６２ｃとを備える。ロック部６２ｂは、図８の断面視で右方に突出する嘴形状をなす。スライダ本体６２ｃは、図８の断面視で摺動部６２ａから左方に延びた後に斜め左下方に傾斜して延びて収容部６１ｂに収容される。   As shown in FIGS. 7 and 8, the slider 62 includes a sliding portion 62a that slides along the guide portion 61a of the seat lock body 61, a lock portion 62b that maintains or releases the locked state of the striker 87a, and And a slider body 62c coupled to the cable plate 63 by welding or the like. The lock part 62b has a hook shape protruding rightward in the sectional view of FIG. The slider main body 62c extends leftward from the sliding portion 62a in the cross-sectional view of FIG. 8 and then extends obliquely to the lower left and is accommodated in the accommodating portion 61b.

ケーブルプレート６３は、スライダ６２のスライダ本体６２ｃに結合される結合部６３ａと、ケーブル６６を接続するケーブル接続部６３ｂとを備える。ケーブルプレート６３は、図７の上面視で、スライダ６２の左端からスライダ６２に沿うように右方に延びた後に前方に屈曲して延び、その後、右方に屈曲して延びた後に左方に屈曲して延びて収容部６１ｂに収容される。   The cable plate 63 includes a coupling portion 63 a that is coupled to the slider main body 62 c of the slider 62 and a cable connection portion 63 b that connects the cable 66. In the top view of FIG. 7, the cable plate 63 extends rightward from the left end of the slider 62 along the slider 62, then bends forward, and then bends rightward and extends leftward. It bends and extends and is accommodated in the accommodating portion 61b.

カバープレート６４は、シートロック本体６１の上部に取り付けられる。カバープレート６４は、図７の上面視で正方形状をなす。
スプリング６５は、スライダ６２の摺動部６２ａの下方において、シートロック本体６１とスライダ６２のロック部６２ｂとの間に配置される。 The cover plate 64 is attached to the upper part of the seat lock body 61. The cover plate 64 has a square shape in a top view of FIG.
The spring 65 is disposed between the seat lock body 61 and the lock portion 62 b of the slider 62 below the sliding portion 62 a of the slider 62.

以下、シートロック６０の動作について一例を挙げて説明する。
スライダ６２には、スプリング６５の弾性力により、右方（図８の矢印ｊ方向）の力が作用する。前記作用により、スライダ６２のロック部６２ｂは、シートロック本体６１の収容溝６１ｈの上方に位置する。これにより、ストライカ８７ａの上方への移動が規制され、ストライカ８７ａのロック状態が維持される。 Hereinafter, an example of the operation of the seat lock 60 will be described.
A rightward force (in the direction of arrow j in FIG. 8) acts on the slider 62 due to the elastic force of the spring 65. Due to the above action, the lock portion 62 b of the slider 62 is positioned above the accommodation groove 61 h of the seat lock body 61. Thereby, the upward movement of the striker 87a is restricted, and the locked state of the striker 87a is maintained.

一方、キーシリンダ３８（図２参照）の施錠を解除すると、ケーブル６６には、左方（図７の矢印ｋ方向）の力が作用する。前記作用により、スライダ６２のロック部６２ｂは、シートロック本体６１の収容溝６１ｈの上方に位置から左方（図７の矢印ｋ方向）に移動し、収容溝６１ｈの上方が開放する。これにより、ストライカ８７ａの上方への移動が自在とされ、ストライカ８７ａのロック状態が解除される。   On the other hand, when the key cylinder 38 (see FIG. 2) is unlocked, a force on the left (in the direction of the arrow k in FIG. 7) acts on the cable 66. As a result, the lock portion 62b of the slider 62 moves from the position above the accommodation groove 61h of the seat lock body 61 to the left (in the direction of the arrow k in FIG. 7), and the upper portion of the accommodation groove 61h is opened. As a result, the striker 87a can be freely moved upward, and the locked state of the striker 87a is released.

以上説明したように、本実施形態は、運転者が着座するシート８と、シート８の下方で車体フレーム５に支持される燃料タンク２０とを備える自動二輪車１の燃料タンク締結構造において、車体フレーム５には、燃料タンク２０を支持する支持部材４０が配置され、支持部材４０は、シート８の荷重を受ける荷重受部４１ｂを有する。
この構成によれば、車体フレーム５に燃料タンク２０を支持する支持部材４０を配置し、支持部材４０にシート８の荷重を受ける荷重受部４１ｂを設けることで、支持部材４０を介して車体フレーム５にシート荷重が伝わるため、燃料タンク２０に荷重受部を配置する場合と比較して、燃料タンク２０にシート荷重が伝わり難くなる。そのため、燃料タンク２０にシート荷重を受けるだけの剛性を持たせるために、燃料タンク２０の板厚を大きくしたり、燃料タンク２０に補強部材を取り付けたりする必要がなくなる。従って、燃料タンク２０の軽量化を図ると共に、組付工数の増加を抑制することができる。 As described above, the present embodiment is directed to the vehicle body frame in the fuel tank fastening structure of the motorcycle 1 including the seat 8 on which the driver is seated and the fuel tank 20 supported by the vehicle body frame 5 below the seat 8. 5, a support member 40 that supports the fuel tank 20 is disposed, and the support member 40 includes a load receiving portion 41 b that receives the load of the seat 8.
According to this configuration, the support member 40 that supports the fuel tank 20 is disposed on the vehicle body frame 5, and the load receiving portion 41 b that receives the load of the seat 8 is provided on the support member 40, whereby the vehicle body frame is interposed via the support member 40. 5, the seat load is less likely to be transmitted to the fuel tank 20 as compared with the case where the load receiving portion is disposed in the fuel tank 20. Therefore, it is not necessary to increase the plate thickness of the fuel tank 20 or attach a reinforcing member to the fuel tank 20 in order to give the fuel tank 20 enough rigidity to receive the seat load. Therefore, it is possible to reduce the weight of the fuel tank 20 and to suppress an increase in assembly man-hours.

又、支持部材４０が弾性部材４４を介して燃料タンク２０を車体フレーム５に支持することで、車体フレーム５の振動が支持部材４０及び燃料タンク２０を介してシート８に伝わることを抑制することができる。   Further, the support member 40 supports the fuel tank 20 to the vehicle body frame 5 via the elastic member 44, thereby suppressing the vibration of the vehicle body frame 5 from being transmitted to the seat 8 via the support member 40 and the fuel tank 20. Can do.

又、カラー４１において筒部４１ａから径方向外側に張り出す鍔部４１ｂを弾性部材４４の上に配置し荷重受部４１ｂとすることで、荷重受部のための専用品を別途設ける場合と比較して、簡単な構成でシート荷重を受けることができるため、低コスト化を図ることができる。   In addition, the collar 41 has a collar portion 41b projecting radially outward from the cylindrical portion 41a on the elastic member 44 to form a load receiving portion 41b, so that a dedicated product for the load receiving portion is provided separately. Since the seat load can be received with a simple configuration, the cost can be reduced.

又、カラー４１において鍔部４１ｂを筒部４１ａから弾性部材４４よりも径方向外側に張り出すように形成することで、鍔部４１ｂを筒部４１ａから弾性部材４４と同等、又は、弾性部材４４よりも径方向内側に張り出すように形成する場合と比較して、より広い面でシート荷重を受けることができる。   In addition, the collar 41 is formed so that the collar 41b projects from the cylindrical part 41a to the outside in the radial direction from the elastic member 44, so that the collar 41b is equivalent to the elastic member 44 from the cylindrical part 41a or the elastic member 44. Compared with the case where it is formed so as to project outward in the radial direction, the seat load can be received on a wider surface.

又、弾性凸部５１が荷重受部４１ｂと当接する当接面５１ｓを平坦面とした場合、弾性凸部５１を荷重受部４１ｂに当接すると、車体フレーム５の振動が締結部材４２を介してシート８に伝わることがある。これに対し、この構成によれば、弾性凸部５１が荷重受部４１ｂと当接する当接面５１ｓに、締結部材４２の頭部４２ａから離反するように上方に凹む凹部５１ａを形成することで、弾性凸部５１を荷重受部４１ｂに当接しても、弾性凸部５１が頭部４２ａから離反するため、車体フレーム５の振動が締結部材４２を介してシート８に伝わることを抑制することができる。又、弾性凸部５１が荷重受部４１ｂと当接する当接面５１ｓに、頭部４２ａから離反するように上方に凹む凹部５１ａを形成することで、頭部４２ａの周囲の鍔部４１ｂへシート荷重を分散させることができ、締結部材４２への歪み等を軽減することができる。   Further, in the case where the contact surface 51s where the elastic convex portion 51 contacts the load receiving portion 41b is a flat surface, when the elastic convex portion 51 contacts the load receiving portion 41b, the vibration of the vehicle body frame 5 passes through the fastening member 42. May be transmitted to the seat 8. On the other hand, according to this configuration, the elastic convex portion 51 is formed with the concave portion 51a that is recessed upward so as to be separated from the head portion 42a of the fastening member 42 on the contact surface 51s that contacts the load receiving portion 41b. Even if the elastic convex portion 51 abuts against the load receiving portion 41b, the elastic convex portion 51 is separated from the head portion 42a, so that the vibration of the vehicle body frame 5 is prevented from being transmitted to the seat 8 via the fastening member 42. Can do. Further, by forming a concave portion 51a that is recessed upward so that the elastic convex portion 51 comes into contact with the load receiving portion 41b so as to be separated from the head portion 42a, the sheet is transferred to the flange portion 41b around the head portion 42a. A load can be disperse | distributed and distortion etc. to the fastening member 42 can be reduced.

又、リヤクロスフレーム３２の上面３２ａに、シート８の荷重を受ける第二荷重受部３２ｂを配置することで、燃料タンク２０を支持する支持部材４０にのみ荷重受部４１ｂを設ける場合と比較して、シート８後端部に近い位置においてもシート荷重を受けることができるため、シート荷重を広い範囲で分散させることができる。これにより、支持部材４０の剛性を下げることができるため、支持部材４０の軽量化を図ることができる。   Further, the second load receiving portion 32b that receives the load of the seat 8 is disposed on the upper surface 32a of the rear cross frame 32, so that the load receiving portion 41b is provided only on the support member 40 that supports the fuel tank 20. Thus, the seat load can be received even at a position close to the rear end portion of the seat 8, so that the seat load can be dispersed in a wide range. Thereby, since the rigidity of the support member 40 can be reduced, the weight of the support member 40 can be reduced.

又、第二荷重受部３２ｂを、上面視でシートロック６０を囲むように複数配置することで、第二荷重受部３２ｂを上面視でシートロック６０と重なる位置に局所的に配置する場合と比較して、シートロック６０にシート荷重が伝わり難くなるため、シートロック６０への負荷を低減することができる。   In addition, by arranging a plurality of second load receiving portions 32b so as to surround the seat lock 60 when viewed from above, the second load receiving portion 32b is locally disposed at a position overlapping the seat lock 60 when viewed from above. In comparison, since the seat load is less likely to be transmitted to the seat lock 60, the load on the seat lock 60 can be reduced.

又、荷重受部４１ｂを、燃料タンク２０の後側で、且つ、左右一対のリヤフレーム５ｃの少なくとも一部と上面視で重なる位置に左右一対配置し、燃料タンク２０よりも前方で、且つ、左右一対のリヤフレーム５ｃの少なくとも一部と上面視で重なる位置に、シート８の荷重を受ける左右一対の第三荷重受部５ｆを配置することで、燃料タンク２０を支持する支持部材４０にのみ荷重受部４１ｂを設ける場合と比較して、燃料タンク２０の前後位置でシート荷重を受けることができるため、シート荷重を広い範囲で分散させることができる。これにより、支持部材４０の剛性を下げることができるため、支持部材４０の軽量化を図ることができる。   Further, a pair of left and right load receiving portions 41b are disposed on the rear side of the fuel tank 20 and at a position overlapping with at least a part of the pair of left and right rear frames 5c in a top view, in front of the fuel tank 20, and By arranging the pair of left and right third load receiving portions 5f that receive the load of the seat 8 at a position that overlaps at least a part of the pair of left and right rear frames 5c in a top view, only the support member 40 that supports the fuel tank 20 is disposed. Compared with the case where the load receiving portion 41b is provided, the seat load can be received at the front and rear positions of the fuel tank 20, so that the seat load can be dispersed in a wide range. Thereby, since the rigidity of the support member 40 can be reduced, the weight of the support member 40 can be reduced.

又、燃料ポンプ２４が燃料タンク２０のポンプ取付面２１ｂに配置される場合であっても、左右一対の荷重受部４１ｂと左右一対の第三荷重受部５ｆとを、上面視で燃料ポンプ２４を囲むように配置することで、左右一対の荷重受部４１ｂと左右一対の第三荷重受部５ｆとを、上面視で燃料ポンプ２４と重なる位置に局所的に配置する場合と比較して、燃料ポンプ２４にシート荷重が伝わり難くなるため、燃料ポンプ２４への負荷を低減することができる。   Even when the fuel pump 24 is disposed on the pump mounting surface 21b of the fuel tank 20, the pair of left and right load receiving portions 41b and the pair of left and right third load receiving portions 5f are connected to each other as viewed from above. As compared to the case where the pair of left and right load receiving portions 41b and the pair of left and right third load receiving portions 5f are locally disposed at a position overlapping the fuel pump 24 in a top view, Since the seat load is hardly transmitted to the fuel pump 24, the load on the fuel pump 24 can be reduced.

尚、本発明は上記実施形態に限られるものではなく、例えば、前記鞍乗型車両には、運転者が車体を跨いで乗車する車両全般が含まれ、自動二輪車（原動機付自転車及びスクータ型車両を含む）のみならず、三輪（前一輪且つ後二輪の他に、前二輪且つ後一輪の車両も含む）又は四輪の車両も含まれる。
そして、上記実施形態における構成は本発明の一例であり、実施形態の構成要素を周知の構成要素に置き換える等、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 The present invention is not limited to the above-described embodiment. For example, the saddle riding type vehicle includes all vehicles on which a driver rides across a vehicle body, and includes motorcycles (motorbikes and scooter type vehicles). As well as three-wheel vehicles (including one front wheel and two rear wheels as well as two front wheels and one rear wheel vehicle) or four-wheel vehicles.
The configuration in the above embodiment is an example of the present invention, and various modifications can be made without departing from the gist of the present invention, such as replacing the component of the embodiment with a known component.

１ 自動二輪車（鞍乗り型車両）
５ 車体フレーム
５ａ ヘッドパイプ
５ｂ メインフレーム
５ｃ リヤフレーム
５ｆ 第三荷重受部
８ シート
２０ 燃料タンク
２１ｂ ポンプ取付面（燃料タンクの上面）
２４ 燃料ポンプ
３２ リヤクロスフレーム
３２ａ リヤクロスフレームの上面
３２ｂ 第二荷重受部
４０ 支持部材
４１ カラー
４１ａ 筒部
４１ｂ 鍔部（荷重受部）
４２，４３ 締結部材
４４ 弾性部材
５１ 弾性凸部
５１ａ 凹部
５１ｓ 当接面
６０ シートロック 1 Motorcycle (saddle-ride type vehicle)
5 Body frame 5a Head pipe 5b Main frame 5c Rear frame 5f Third load receiving portion 8 Seat 20 Fuel tank 21b Pump mounting surface (upper surface of fuel tank)
24 fuel pump 32 rear cross frame 32a upper surface of rear cross frame 32b second load receiving portion 40 support member 41 collar 41a cylinder portion 41b collar portion (load receiving portion)
42, 43 Fastening member 44 Elastic member 51 Elastic convex part 51a Concave part 51s Contact surface 60 Seat lock

Claims (9)

運転者が着座するシート（８）と、前記シート（８）の下方で車体フレーム（５）に支持される燃料タンク（２０）とを備える鞍乗り型車両（１）の燃料タンク締結構造において、
前記車体フレーム（５）には、前記燃料タンク（２０）を支持する支持部材（４０）が配置され、
前記支持部材（４０）は、前記シート（８）の荷重を受ける荷重受部（４１ｂ）を有することを特徴とする鞍乗り型車両の燃料タンク締結構造。 In the fuel tank fastening structure of the saddle-ride type vehicle (1), comprising a seat (8) on which a driver is seated and a fuel tank (20) supported by the vehicle body frame (5) below the seat (8),
A support member (40) for supporting the fuel tank (20) is disposed on the vehicle body frame (5),
The fuel tank fastening structure for a saddle-ride type vehicle, wherein the support member (40) has a load receiving portion (41b) for receiving a load of the seat (8). 前記支持部材（４０）は、弾性部材（４４）を介して、前記燃料タンク（２０）を前記車体フレーム（５）に支持することを特徴とする請求項１に記載の鞍乗り型車両の燃料タンク締結構造。   The fuel for a saddle-ride type vehicle according to claim 1, wherein the support member (40) supports the fuel tank (20) on the vehicle body frame (5) via an elastic member (44). Tank fastening structure. 前記弾性部材（４４）は、筒状に形成され、
前記支持部材（４０）は、前記弾性部材（４４）を貫通して前記車体フレーム（５）に当接する筒部（４１ａ）と、前記筒部（４１ａ）から径方向外側に張り出す鍔部（４１ｂ）とを有するカラー（４１）と、前記カラー（４１）の前記筒部（４１ａ）を貫通して前記カラー（４１）と前記車体フレーム（５）とを締結する締結部材（４２，４３）と、を備え、
前記鍔部（４１ｂ）は、前記弾性部材（４４）の上に配置され、前記荷重受部（４１ｂ）とされることを特徴とする請求項２に記載の鞍乗り型車両の燃料タンク締結構造。 The elastic member (44) is formed in a cylindrical shape,
The support member (40) includes a cylindrical portion (41a) that penetrates the elastic member (44) and contacts the vehicle body frame (5), and a flange portion that projects radially outward from the cylindrical portion (41a). 41b), and fastening members (42, 43) for fastening the collar (41) and the vehicle body frame (5) through the tube portion (41a) of the collar (41). And comprising
The fuel tank fastening structure for a saddle-ride type vehicle according to claim 2, wherein the flange portion (41b) is disposed on the elastic member (44) and serves as the load receiving portion (41b). . 前記鍔部（４１ｂ）は、前記筒部（４１ａ）から前記弾性部材（４４）よりも径方向外側に張り出すように形成されることを特徴とする請求項３に記載の鞍乗り型車両の燃料タンク締結構造。   4. The saddle-ride type vehicle according to claim 3, wherein the flange portion (41 b) is formed so as to project outward from the cylindrical portion (41 a) in a radial direction with respect to the elastic member (44). Fuel tank fastening structure. 前記シート（８）には、弾性材料により形成されて下方へ突出する弾性凸部（５１）が配置され、
前記鍔部（４１ｂ）からは、前記締結部材（４２，４３）が上方に突出し、
前記弾性凸部（５１）が前記鍔部（４１ｂ）と当接する当接面（５１ｓ）には、前記締結部材（４２，４３）から離反するように上方に凹む凹部（５１ａ）が形成されることを特徴とする請求項３又は４に記載の鞍乗り型車両の燃料タンク締結構造。 In the sheet (8), an elastic convex portion (51) formed of an elastic material and projecting downward is disposed,
From the collar part (41b), the fastening member (42, 43) protrudes upward,
On the contact surface (51s) where the elastic convex portion (51) contacts the flange portion (41b), a concave portion (51a) recessed upward is formed so as to be separated from the fastening member (42, 43). The fuel tank fastening structure for a saddle-ride type vehicle according to claim 3 or 4, 前記車体フレーム（５）は、ヘッドパイプ（５ａ）と、前記ヘッドパイプ（５ａ）から後方へ延びるメインフレーム（５ｂ）と、前記メインフレーム（５ｂ）から後方へ延びる左右一対のリヤフレーム（５ｃ）とを含み、
前記左右一対のリヤフレーム（５ｃ）の後端部には、前記左右一対のリヤフレーム（５ｃ）の間を渡すリヤクロスフレーム（３２）が配置され、
前記リヤクロスフレーム（３２）の上面（３２ａ）には、前記シート（８）の荷重を受ける第二荷重受部（３２ｂ）が配置されることを特徴とする請求項１から５までの何れか一項に記載の鞍乗り型車両の燃料タンク締結構造。 The vehicle body frame (5) includes a head pipe (5a), a main frame (5b) extending rearward from the head pipe (5a), and a pair of left and right rear frames (5c) extending rearward from the main frame (5b). Including
A rear cross frame (32) passing between the pair of left and right rear frames (5c) is disposed at a rear end portion of the pair of left and right rear frames (5c).
The second load receiving portion (32b) for receiving the load of the seat (8) is disposed on the upper surface (32a) of the rear cross frame (32). The fuel tank fastening structure for saddle riding type vehicles according to one item. 前記リヤクロスフレーム（３２）の下面には、前記シート（８）をロックするシートロック（６０）が配置され、
前記第二荷重受部（３２ｂ）は、上面視で前記シートロック（６０）を囲むように複数配置されることを特徴とする請求項６に記載の鞍乗り型車両の燃料タンク締結構造。 A seat lock (60) for locking the seat (8) is disposed on the lower surface of the rear cross frame (32),
The fuel tank fastening structure for a saddle-ride type vehicle according to claim 6, wherein a plurality of the second load receiving portions (32b) are arranged so as to surround the seat lock (60) in a top view. 前記車体フレーム（５）は、ヘッドパイプ（５ａ）と、前記ヘッドパイプ（５ａ）から後方へ延びるメインフレーム（５ｂ）と、前記メインフレーム（５ｂ）から後方へ延びる左右一対のリヤフレーム（５ｃ）とを含み、
前記荷重受部（４１ｂ）は、前記燃料タンク（２０）の後側で、且つ、前記左右一対のリヤフレーム（５ｃ）の少なくとも一部と上面視で重なる位置に左右一対配置され、
前記燃料タンク（２０）よりも前方で、且つ、前記左右一対のリヤフレーム（５ｃ）の少なくとも一部と上面視で重なる位置には、前記シート（８）の荷重を受ける左右一対の第三荷重受部（５ｆ）が配置されることを特徴とする請求項１から７までの何れか一項に記載の鞍乗り型車両の燃料タンク締結構造。 The vehicle body frame (5) includes a head pipe (5a), a main frame (5b) extending rearward from the head pipe (5a), and a pair of left and right rear frames (5c) extending rearward from the main frame (5b). Including
The load receiving portions (41b) are arranged on the rear side of the fuel tank (20) and at a position overlapping at least a part of the pair of left and right rear frames (5c) in a top view,
A pair of left and right third loads for receiving the load of the seat (8) at a position in front of the fuel tank (20) and overlapping at least a part of the pair of left and right rear frames (5c) in a top view. The fuel tank fastening structure for a saddle-ride type vehicle according to any one of claims 1 to 7, wherein a receiving portion (5f) is arranged. 前記燃料タンク（２０）の上面（２１ｂ）には、燃料ポンプ（２４）が配置され、
前記左右一対の荷重受部（４１ｂ）と前記左右一対の第三荷重受部（５ｆ）とは、上面視で前記燃料ポンプ（２４）を囲むように配置されることを特徴とする請求項８に記載の鞍乗り型車両の燃料タンク締結構造。 A fuel pump (24) is disposed on the upper surface (21b) of the fuel tank (20),
The pair of left and right load receiving portions (41b) and the pair of left and right third load receiving portions (5f) are disposed so as to surround the fuel pump (24) in a top view. A fuel tank fastening structure for a saddle-ride type vehicle as described in 1.
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