JP6984282B2 - Tank mounting structure - Google Patents

Tank mounting structure Download PDF

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JP6984282B2
JP6984282B2 JP2017187432A JP2017187432A JP6984282B2 JP 6984282 B2 JP6984282 B2 JP 6984282B2 JP 2017187432 A JP2017187432 A JP 2017187432A JP 2017187432 A JP2017187432 A JP 2017187432A JP 6984282 B2 JP6984282 B2 JP 6984282B2
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band
tank
pin
bracket
pin member
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JP2019059423A (en
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渓人 遊佐
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Isuzu Motors Ltd
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Isuzu Motors Ltd
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Description

本開示の技術は、タンク取付構造に関し、特に、車両用の燃料タンクの取付構造に関する。 The technique of the present disclosure relates to a tank mounting structure, and more particularly to a mounting structure of a fuel tank for a vehicle.

この種の燃料タンクの取付構造として、例えば、特許文献１には、車体前後方向に延びるシャシフレームの車体幅方向外側の側壁に、燃料タンクを下方から支持する前後一対の支持ブラケットを設けると共に、これら前後の支持ブラケットにバンド等を介して燃料タンクを結束固定する構造が開示されている。 As a mounting structure for this type of fuel tank, for example, in Patent Document 1, a pair of front and rear support brackets for supporting the fuel tank from below are provided on the side wall of the chassis frame extending in the front-rear direction of the vehicle body in the width direction of the vehicle body. A structure for binding and fixing a fuel tank to these front and rear support brackets via a band or the like is disclosed.

当該文献の構造では、バンドの上端部及び下端部を支持ブラケットにピン連結することにより、燃料タンクを支持ブラケットに保持している。バンドの下端部を連結するピンは、ピン軸方向に垂直なボルト軸を一体に有する略Ｔ字状に形成されており、該ボルト軸を支持ブラケットの挿通孔に挿入してナットを締め付け螺合することにより、バンドの張力を適宜に調整できるように構成されている。 In the structure of the document, the fuel tank is held by the support bracket by pin-connecting the upper end and the lower end of the band to the support bracket. The pin connecting the lower end of the band is formed in a substantially T shape having a bolt shaft perpendicular to the pin axis direction integrally, and the bolt shaft is inserted into the insertion hole of the support bracket and the nut is tightened and screwed. By doing so, the tension of the band can be adjusted as appropriate.

特開２０１７−１００５１４号公報Japanese Unexamined Patent Publication No. 2017-100514

ところで、上記文献の構造では、バンドの下端部を連結するピンがボルト軸を一体的に有する略Ｔ字状に形成されているため、ボルト軸に螺合させたナットを締め付けると、回転力がボルト軸からピンを介してバンドに伝わることで、バンドに捩じれを生じさせる課題がある。また、バンドの下端部に、ナットの締め付けに伴う応力が集中することで、バンドに破損を生じさせる可能性もある。また、片手でバンドを燃料タンクの外周に沿わせつつ、もう片方の手でナットの締め付けを行う必要があり、作業が煩わしいといった課題もある。 By the way, in the structure of the above document, since the pin connecting the lower end portion of the band is formed in a substantially T shape having the bolt shaft integrally, when the nut screwed to the bolt shaft is tightened, the rotational force is generated. There is a problem that the band is twisted by being transmitted from the bolt shaft to the band via the pin. In addition, stress associated with tightening the nut concentrates on the lower end of the band, which may cause damage to the band. Further, it is necessary to tighten the nut with the other hand while keeping the band along the outer circumference of the fuel tank with one hand, which causes a problem that the work is troublesome.

本開示の技術は、タンクを結束固定するバンドに捩じれが生じることを効果的に防止することを目的とする。 It is an object of the present disclosure technique to effectively prevent twisting of the band that binds and fixes the tank.

本開示の技術は、車体側から延びると共に、タンクの少なくとも一部を支持するブラケットと、前記ブラケットの車体側の第１所定部位から延出端側の第２所定部位に架け渡されて、前記タンクを前記ブラケットに結束するバンド部材と、前記バンド部材の一端部を前記第１所定部位にピン連結する第１ピン部材と、前記バンド部材の他端部を前記第２所定部位にピン連結する第２ピン部材と、前記ブラケットに長穴状に形成されると共に、前記第１ピン部材又は前記第２ピン部材の一方を長径方向に移動可能に挿通させる挿通穴と、前記挿通穴の長径方向と平行に延びる雄ネジ部を有する雄ネジ部材と、前記ブラケットに設けられると共に、前記雄ネジ部が螺合する雌ネジ部と、前記雄ネジ部材と、前記挿通穴に挿通される前記第１ピン部材又は前記第２ピン部材の一方とを、前記雄ネジ部の軸心を中心に互いに相対回転自在に連結するジョイント機構と、を備えることを特徴とする。
The technique of the present disclosure extends from the vehicle body side and spans a bracket that supports at least a part of the tank from a first predetermined portion on the vehicle body side of the bracket to a second predetermined portion on the extension end side. A band member that binds the tank to the bracket, a first pin member that pins one end of the band member to the first predetermined portion, and a pin connection of the other end of the band member to the second predetermined portion. An insertion hole formed in the bracket in the shape of a long hole, and one of the first pin member or the second pin member so as to be movable in the major axis direction, and an insertion hole in the major axis direction of the insertion hole. a male screw member having a male threaded portion extending in parallel with, along with provided in the bracket, and a female screw portion into which the male screw portion is screwed, the male screw member, the first to be inserted into said insertion hole one and the pin member and the second pin member, characterized in that it comprises a joint mechanism for rotatably connected to each other around the axis of the male threaded portion.

また、前記バンド部材の前記一端部及び前記他端部の少なくとも一方が二股に分岐形成されると共に、当該分岐形成された部位の各先端部に前記第１ピン部材又は前記第２ピン部材が挿通されることが好ましい。 Further, at least one of the one end portion and the other end portion of the band member is bifurcated and formed, and the first pin member or the second pin member is inserted into each tip portion of the branched portion. It is preferable to be done.

また、前記タンクが前記ブラケットに載置される円筒状のタンク胴部を含み、前記挿通穴が、その長径方向を前記タンク胴部の外周接線方向と平行になるように形成されることが好ましい。 Further, it is preferable that the tank includes a cylindrical tank body portion mounted on the bracket, and the insertion hole is formed so that the major axis direction thereof is parallel to the outer peripheral tangential direction of the tank body portion. ..

また、前記ブラケットが互いに対向する一対の型板部を有すると共に、前記挿通穴が前記一対の型板部にそれぞれ貫通形成されており、前記雌ネジ部が前記一対の型板部に接合された固定板部に設けられ、前記一対の型板部の間に前記挿通穴に挿通された前記第１ピン部材又は前記第２ピン部材の一方を軸支する軸支部材が配設され、前記ジョイント機構が前記雄ネジ部材と前記軸支部材とを相対回転自在に連結することが好ましい。 Further, the brackets have a pair of template portions facing each other, and the insertion holes are formed through the pair of template portions, respectively, and the female screw portions are joined to the pair of template portions. A shaft support member provided on the fixed plate portion and axially supporting one of the first pin member or the second pin member inserted into the insertion hole is disposed between the pair of template portions, and the joint is provided. It is preferable that the mechanism connects the male screw member and the shaft support member so as to be relatively rotatable.

本開示の技術によれば、タンクを結束固定するバンドに捩じれが生じることを効果的に防止することができる。 According to the technique of the present disclosure, it is possible to effectively prevent twisting of the band that binds and fixes the tank.

本実施形態に係るタンク取付構造が適用されたタンクユニット及び、タンクユニットが取り付けられた車体フレームの一部を示す模式的な斜視図である。It is a schematic perspective view which shows the tank unit to which the tank mounting structure which concerns on this embodiment is applied, and a part of the vehicle body frame to which the tank unit is mounted. 本実施形態に係る前後の支持ブラケットを説明する模式的な斜視図である。It is a schematic perspective view explaining the front-rear support bracket which concerns on this embodiment. 本実施形態に係るバンド連結機構及び、バンド張力調整機構を示す模式的な斜視図である。It is a schematic perspective view which shows the band connecting mechanism and the band tension adjusting mechanism which concerns on this embodiment. 本実施形態に係るバンド張力調整機構を示す模式的な斜視図である。It is a schematic perspective view which shows the band tension adjustment mechanism which concerns on this embodiment.

以下、添付図面に基づいて、本実施形態に係るタンク取付構造について説明する。同一の部品には同一の符号を付してあり、それらの名称および機能も同じである。したがって、それらについての詳細な説明は繰返さない。 Hereinafter, the tank mounting structure according to the present embodiment will be described with reference to the attached drawings. The same parts are designated by the same reference numerals, and their names and functions are also the same. Therefore, detailed explanations about them will not be repeated.

図１は、本実施形態に係るタンク取付構造が適用されたタンクユニット１０及び、タンクユニット１０が取り付けられた車体フレーム１の一部を示す模式的な斜視図である。 FIG. 1 is a schematic perspective view showing a part of a tank unit 10 to which the tank mounting structure according to the present embodiment is applied and a vehicle body frame 1 to which the tank unit 10 is mounted.

車体フレーム１は、例えば、トラック等のキャブオーバ型車両の車体骨格フレームであって、その前端側には、運転室としてのキャブ（不図示）や、タンクユニット１０から供給される燃料（例えば、天然ガス）により駆動する動力源としてのエンジン（不図示）等が搭載されている。 The vehicle body frame 1 is, for example, a vehicle body skeleton frame of a cab-over type vehicle such as a truck, and a cab as a driver's cab (not shown) and fuel supplied from a tank unit 10 (for example, natural gas) are on the front end side thereof. It is equipped with an engine (not shown) as a power source driven by gas).

車体フレーム１は、車体前後方向に延びる左右一対のシャシフレーム２，３と、これらシャシフレーム２，３に車体幅方向に架け渡された複数のクロスメンバ４とを備えている。シャシフレーム２，３は、車体幅方向内側に開口する断面略Ｕ字状に形成されている。クロスメンバ４は、車体前方又は後方に向けて開口する断面略Ｕ字状に形成されている。なお、これらシャシフレーム２，３やクロスメンバ４の形状は、断面Ｕ字状に限定されず、断面矩形状等、他の形状であってもよい。 The vehicle body frame 1 includes a pair of left and right chassis frames 2 and 3 extending in the front-rear direction of the vehicle body, and a plurality of cross members 4 spanning the chassis frames 2 and 3 in the vehicle body width direction. The chassis frames 2 and 3 are formed in a substantially U-shaped cross section that opens inward in the width direction of the vehicle body. The cross member 4 is formed in a substantially U-shaped cross section that opens toward the front or rear of the vehicle body. The shapes of the chassis frames 2 and 3 and the cross member 4 are not limited to the U-shaped cross section, and may be other shapes such as a rectangular cross section.

左右のシャシフレーム２，３の少なくとも一方には、タンクユニット１０が取り付けられている。タンクユニット１０は、左右何れのシャシフレーム２，３に取り付けられる場合も略同様に構成されるため、以下では、右側のシャシフレーム３に取り付けられるタンクユニット１０について説明する。 A tank unit 10 is attached to at least one of the left and right chassis frames 2 and 3. Since the tank unit 10 is configured in substantially the same manner when it is attached to either the left or right chassis frame 2 or 3, the tank unit 10 attached to the right chassis frame 3 will be described below.

タンクユニット１０は、燃料タンク５０と、前後一対の支持ブラケット１１Ｆ，１１Ｒと、前後一対の固定バンド２０Ｆ，２０Ｒと、前後一対のバンド連結機構４０Ｆ，４０Ｒと、前後一対のバンド張力調整機構６０Ｆ，６０Ｒとを備えている。 The tank unit 10 includes a fuel tank 50, a pair of front and rear support brackets 11F and 11R, a pair of front and rear fixed bands 20F and 20R, a pair of front and rear band connecting mechanisms 40F and 40R, and a pair of front and rear band tension adjusting mechanisms 60F. It is equipped with 60R.

燃料タンク５０は、略円筒状のタンク胴部５１と、タンク胴部５１の前端から略半球状に突出してタンク胴部５１の前端開口を塞ぐタンク前端部５２と、タンク胴部５１の後端開口を塞ぐと共に、不図示の燃料供給配管等が接続されるコネクタ等を有するタンク後端部５３とを備えている。燃料タンク５０は、タンク胴部５１を、その軸心方向（筒軸方向）が車体前後方向となるように前後の支持ブラケット１１Ｆ，１１Ｒに載置されている。 The fuel tank 50 has a substantially cylindrical tank body 51, a tank front end 52 that projects substantially hemispherically from the front end of the tank body 51 and closes the front end opening of the tank body 51, and a rear end of the tank body 51. It is provided with a tank rear end 53 having a connector or the like to which a fuel supply pipe or the like (not shown) is connected while closing the opening. The fuel tank 50 has the tank body 51 mounted on the front and rear support brackets 11F and 11R so that the axial direction (cylindrical axial direction) thereof is the front-rear direction of the vehicle body.

図２に示すように、前後の支持ブラケット１１Ｆ，１１Ｒは、全体として略Ｌ字状に形成されており、車体上下方向に延びる固定部１２Ａと、斜めに延びる傾斜部１２Ｂと、車体幅方向に延びる支持部１２Ｃと、前後一対の型板部１２Ｄ，１２Ｅと、支持板部１２Ｆとを備えている。前後の支持ブラケット１１Ｆ，１１Ｒは、燃料タンク５０のタンク胴部５１（図１参照）の車体前後方向の長さよりも短い間隔で前後に離間してシャシフレーム３の車体幅方向外側の側壁３Ａに取り付けられている。 As shown in FIG. 2, the front and rear support brackets 11F and 11R are formed in a substantially L shape as a whole, and have a fixed portion 12A extending in the vertical direction of the vehicle body, an inclined portion 12B extending diagonally in the vertical direction of the vehicle body, and the width direction of the vehicle body. It includes an extending support portion 12C, a pair of front and rear template portions 12D and 12E, and a support plate portion 12F. The front and rear support brackets 11F and 11R are separated from each other in the front-rear direction at intervals shorter than the length of the tank body 51 (see FIG. 1) of the fuel tank 50 in the front-rear direction of the vehicle body, and are separated from each other in the front-rear direction on the outer side wall 3A of the chassis frame 3 in the vehicle body width direction. It is attached.

固定部１２Ａは、シャシフレーム３の壁面３Ａに沿って、側壁３Ａの上端から下端に亘って車体上下方向に延設されている。固定部１２Ａは、複数のボルト１４を、シャシフレーム３の車体幅方向内側の側面に溶接等で固定された不図示の裏面ナットと螺合することにより固定される。 The fixing portion 12A extends in the vertical direction of the vehicle body from the upper end to the lower end of the side wall 3A along the wall surface 3A of the chassis frame 3. The fixing portion 12A is fixed by screwing a plurality of bolts 14 to a back surface nut (not shown) fixed to the inner side surface of the chassis frame 3 in the vehicle body width direction by welding or the like.

傾斜部１２Ｂは、固定部１２Ａの下端から車体幅方向外側に斜め下方に向けて延設されている。支持部１２Ｃは、傾斜部１２Ｂの下端から車体幅方向外側に略水平方向に延設されている。これら傾斜部１２Ｂ及び、支持部１２Ｃの車体幅方向の長さは、少なくとも、燃料タンク５０のタンク胴部５１（図１参照）の直径よりも長くなるように形成されている。 The inclined portion 12B extends diagonally downward from the lower end of the fixing portion 12A to the outside in the vehicle body width direction. The support portion 12C extends substantially horizontally from the lower end of the inclined portion 12B to the outside in the vehicle body width direction. The lengths of the inclined portions 12B and the support portions 12C in the vehicle body width direction are formed so as to be at least longer than the diameter of the tank body portion 51 (see FIG. 1) of the fuel tank 50.

前後の型板部１２Ｄ，１２Ｅは、略Ｌ字状の平板部材であって、その外縁１２Ｇの形状を固定部１２Ａ、傾斜部１２Ｂ及び、支持部１２Ｃの形状に沿うように少なくとも二箇所で屈折する直線状とされている。また、前後の型板部１２Ｄ，１２Ｅの内縁１２Ｈの形状は、燃料タンク５０のタンク胴部５１（図１参照）の外周と略同曲率で湾曲して窪む半円弧状とされている。前後の型板部１２Ｄ，１２Ｅは、その外縁１２Ｇを固定部１２Ａ、傾斜部１２Ｂ及び、支持部１２Ｃの表面に溶接等により接合することで固定されている。 The front and rear template portions 12D and 12E are substantially L-shaped flat plate members, and the shape of the outer edge 12G thereof is refracted at at least two locations so as to follow the shapes of the fixing portion 12A, the inclined portion 12B, and the support portion 12C. It is said to be a straight line. Further, the shape of the inner edges 12H of the front and rear template portions 12D and 12E is a semicircular arc shape that is curved and recessed with substantially the same curvature as the outer circumference of the tank body portion 51 (see FIG. 1) of the fuel tank 50. The front and rear template portions 12D and 12E are fixed by joining the outer edges 12G to the surfaces of the fixing portion 12A, the inclined portion 12B, and the supporting portion 12C by welding or the like.

支持板部１２Ｆは、前後の型板部１２Ｄ，１２Ｅの内縁１２Ｈの形状に沿った半円弧状の湾曲板であって、その前後の端縁を型板部１２Ｄ，１２Ｅの内縁１２Ｈに溶接等により接合することで固定されている。支持板部１２Ｆには、燃料タンク５０のタンク胴部５１（図１参照）が載置される。支持板部１２Ｆの上面には、好ましくは、燃料タンク５０（図１参照）の滑り止めとして機能するゴム等のラバー部材が貼り付けられている。 The support plate portion 12F is a semicircular curved plate that follows the shape of the inner edges 12H of the front and rear template portions 12D and 12E, and the front and rear end edges thereof are welded to the inner edges 12H of the template portions 12D and 12E. It is fixed by joining with. A tank body 51 (see FIG. 1) of the fuel tank 50 is placed on the support plate 12F. A rubber member such as rubber that functions as a non-slip for the fuel tank 50 (see FIG. 1) is preferably attached to the upper surface of the support plate portion 12F.

前後の型板部１２Ｄ，１２Ｅの上端側には、詳細を後述するバンド連結機構４０Ｆ，４０Ｒの一部を構成する前後のブラケット側第１挿通穴４１Ｆ，４１Ｒ（４１Ｒは図示を省略）がそれぞれ貫通形成されている。また、前後の型板部１２Ｄ，１２Ｅの車体幅方向外側の端部側には、詳細を後述するバンド張力調整機構６０Ｆ，６０Ｒの一部を構成する長穴状の前後のブラケット側第２挿通穴６１Ｆ，６１Ｒ（６１Ｒは図示を省略）がそれぞれ貫通形成されている。 On the upper end side of the front and rear template portions 12D and 12E, the front and rear bracket side first insertion holes 41F and 41R (41R is not shown), which form a part of the band connecting mechanisms 40F and 40R described in detail later, are respectively. It is formed through. Further, on the outer end side of the front and rear template portions 12D and 12E in the vehicle body width direction, the second insertion of the front and rear bracket side having a long hole shape constituting a part of the band tension adjusting mechanisms 60F and 60R described in detail later. Holes 61F and 61R (61R is not shown) are formed through the holes, respectively.

図３は、本実施形態に係るバンド連結機構４０Ｆ，４０Ｒ及び、バンド張力調整機構６０Ｆ，６０Ｒを示す模式的な斜視図である。前側のバンド連結機構４０Ｆは後側のバンド連結機構４０Ｒと略同様に構成され、前側のバンド張力調整機構６０Ｆは後側のバンド張力調整機構６０Ｒと略同様に構成されている。このため、以下では、前側のバンド連結機構４０Ｆ及び、前側のバンド張力調整機構６０Ｆについて説明する。 FIG. 3 is a schematic perspective view showing the band connecting mechanisms 40F and 40R and the band tension adjusting mechanisms 60F and 60R according to the present embodiment. The front band connecting mechanism 40F is configured in substantially the same manner as the rear band connecting mechanism 40R, and the front band tension adjusting mechanism 60F is configured in substantially the same manner as the rear band tension adjusting mechanism 60R. Therefore, in the following, the front band connecting mechanism 40F and the front band tension adjusting mechanism 60F will be described.

バンド連結機構４０Ｆは、固定バンド２０Ｆの一端部（上端部）を前後の型板部１２Ｄ，１２Ｅの上端側にピン連結により保持するもので、前後の型板部１２Ｄ，１２Ｅの上端側に貫通形成された前後のブラケット側第１挿通穴４１Ｆ，４１Ｒと、第１連結ピン４２とを備えている。固定バンド２０Ｆの一端部は、前後の型板部１２Ｄ，１２Ｅを跨ぐように二股に分岐形成されている。固定バンド２０Ｆの各分岐端２１Ｆ，２１Ｒには、その先端部を折り返して形成した前後のバンド側第１挿通穴２２Ｆ，２２Ｒがそれぞれ設けられている。前後のバンド側第１挿通穴２２Ｆ，２２Ｒには、第１連結ピン４２が挿入される。 The band connecting mechanism 40F holds one end (upper end) of the fixed band 20F to the upper ends of the front and rear templates 12D and 12E by pin connection, and penetrates the upper ends of the front and rear templates 12D and 12E. The front and rear bracket-side first insertion holes 41F and 41R formed and the first connecting pin 42 are provided. One end of the fixed band 20F is bifurcated so as to straddle the front and rear template portions 12D and 12E. The front and rear band-side first insertion holes 22F and 22R formed by folding back the tip portions of the branch ends 21F and 21R of the fixed band 20F are provided, respectively. The first connecting pin 42 is inserted into the front and rear band-side first insertion holes 22F and 22R.

第１連結ピン４２は、一端側から順に、第１基端部４２Ａと、第１軸部４２Ｂと、第１軸部４２Ｂの先端部に係合可能なスナップリング４２Ｃ及びスナップピン４２Ｄとを備えている。第１基端部４２Ａは、バンド側第１挿通穴２２Ｆ，２２Ｒの穴径よりも拡径して形成されている。第１軸部４２Ｂは、第１基端部４２Ａから少なくとも固定バンド２０Ｆのバンド幅よりも長く突出して形成されている。 The first connecting pin 42 includes a first base end portion 42A, a first shaft portion 42B, and a snap ring 42C and a snap pin 42D that can be engaged with the tip end portion of the first shaft portion 42B in order from one end side. ing. The first base end portion 42A is formed to have a diameter larger than the hole diameters of the band-side first insertion holes 22F and 22R. The first shaft portion 42B is formed so as to project from the first base end portion 42A at least longer than the bandwidth of the fixed band 20F.

固定バンド２０Ｆの一端部を支持ブラケット１１Ｆに取り付ける際は、まず、固定バンド２０Ｆのバンド側第１挿通穴２２Ｆ，２２Ｒをブラケット側第１挿通穴４１Ｆ，４１Ｒに位置合わせし、これらバンド側第１挿通穴２２Ｆ，２２Ｒ及び、ブラケット側第１挿通穴４１Ｆ，４１Ｒに第１連結ピン４２の第１軸部４２Ｂを挿入する。そして、第１軸部４２Ｂのバンド側第１挿通穴２２Ｆから突出した先端部にスナップリング４２Ｃ及びスナップピン４２Ｄを順に係合させることにより、固定バンド２０Ｆの一端部が前後の型板部１２Ｄ，１２Ｅにピン連結されるようになっている。 When attaching one end of the fixed band 20F to the support bracket 11F, first, the band-side first insertion holes 22F and 22R of the fixed band 20F are aligned with the bracket-side first insertion holes 41F and 41R, and these band-side first insertion holes are first aligned. The first shaft portion 42B of the first connecting pin 42 is inserted into the insertion holes 22F and 22R and the first insertion holes 41F and 41R on the bracket side. Then, by engaging the snap ring 42C and the snap pin 42D in order with the tip portion of the first shaft portion 42B protruding from the band-side first insertion hole 22F, one end of the fixing band 20F becomes the front and rear template portions 12D. It is designed to be pin-connected to 12E.

本実施形態では、固定バンド２０Ｆの一端部を二股に分岐形成することにより、固定バンド２０Ｆの一端両側部が第１連結ピン４２によって安定的に支持されるため、バンドを一箇所で支持する従来構造に比べ、固定バンド２０Ｆの捩じれを効果的に防止することができる。なお、第１連結ピン４２を挿入する方向は、図示例とは反対方向であってもよい。また、第１軸部４２Ｂの先端部に係合する部材は、スナップリング４２Ｃやスナップピン４２Ｄに限定されず、他の係止部材を用いてもよい。 In the present embodiment, by forming one end of the fixed band 20F in a bifurcated manner, both ends of the fixed band 20F are stably supported by the first connecting pin 42, so that the band is supported in one place. Compared to the structure, twisting of the fixed band 20F can be effectively prevented. The direction in which the first connecting pin 42 is inserted may be opposite to that shown in the illustrated example. Further, the member engaged with the tip end portion of the first shaft portion 42B is not limited to the snap ring 42C and the snap pin 42D, and other locking members may be used.

バンド張力調整機構６０Ｆは、固定バンド２０Ｆの他端部（下端部）を前後の型板部１２Ｄ，１２Ｅの車体幅方向外側の端部側にピン連結により保持しつつ、固定バンド２０Ｆの張力を調整するものである。 The band tension adjusting mechanism 60F holds the other end (lower end) of the fixed band 20F on the outer end side of the front and rear template portions 12D and 12E in the vehicle body width direction by pin connection, and holds the tension of the fixed band 20F. It is something to adjust.

具体的には、図３，４に示すように、バンド張力調整機構６０Ｆは、長穴状の前後のブラケット側第２挿通穴６１Ｆ，６１Ｒと、第２連結ピン６２と、固定板部６３と、雌ネジ部６４（図４に示す）と、ボルト部材６５と、軸支部材６６と、ジョイント機構６７とを備えている。固定バンド２０Ｆの他端部は、前述の一端部と同様、前後の型板部１２Ｄ，１２Ｅを跨ぐように二股に分岐形成されている。固定バンド２０Ｆの各分岐端２３Ｆ，２３Ｒには、その先端部を折り返して形成した前後のバンド側第２挿通穴２４Ｆ，２４Ｒ（２４Ｒは図４参照）がそれぞれ設けられている。前後のバンド側第２挿通穴２４Ｆ，２４Ｒには、第２連結ピン６２が挿入される。 Specifically, as shown in FIGS. 3 and 4, the band tension adjusting mechanism 60F includes an elongated hole-shaped front and rear bracket-side second insertion holes 61F and 61R, a second connecting pin 62, and a fixing plate portion 63. A female screw portion 64 (shown in FIG. 4), a bolt member 65, a shaft support member 66, and a joint mechanism 67 are provided. The other end of the fixed band 20F is bifurcated so as to straddle the front and rear template portions 12D and 12E, similarly to the above-mentioned one end. The front and rear band-side second insertion holes 24F and 24R (see FIG. 4 for 24R) are provided at the respective branch ends 23F and 23R of the fixed band 20F, respectively. The second connecting pin 62 is inserted into the front and rear band-side second insertion holes 24F and 24R.

前後のブラケット側第２挿通穴６１Ｆ，６１Ｒは、前後の型板部１２Ｄ，１２Ｅの車体幅方向外側の端部側に、その長径方向が支持板部１２Ｆ（又は、支持板部１２Ｆに載置される図１に示す燃料タンク５０のタンク胴部５１）の接線方向となるようにそれぞれ貫通形成されている。前後のブラケット側第２挿通穴６１Ｆ，６１Ｒの間には、その貫通穴６６Ａ（図４参照）に第２連結ピン６２を挿通させる軸支部材６６が配設されている。 The front and rear bracket side second insertion holes 61F and 61R are placed on the front and rear template portions 12D and 12E on the outer end side in the vehicle body width direction and on the support plate portion 12F (or the support plate portion 12F) in the major axis direction. The fuel tank 50 shown in FIG. 1 is formed through the tank body 51) so as to be tangential to each other. Between the front and rear bracket-side second insertion holes 61F and 61R, a shaft support member 66 for inserting the second connecting pin 62 into the through hole 66A (see FIG. 4) is arranged.

第２連結ピン６２は、一端側から順に、第２基端部６２Ａと、第２軸部６２Ｂと、第２軸部６２Ｂの先端部に係合可能なスナップリング６２Ｃ及びスナップピン６２Ｄとを備えている。第２基端部６２Ａは、バンド側第２挿通穴２４Ｆ，２４Ｒ（２４Ｒは図４参照）の穴径よりも拡径して形成されている。第２軸部６２Ｂは、第２基端部６２Ａから少なくとも固定バンド２０Ｆのバンド幅よりも長く突出して形成されている。 The second connecting pin 62 includes a second base end portion 62A, a second shaft portion 62B, and a snap ring 62C and a snap pin 62D that can be engaged with the tip end portion of the second shaft portion 62B in order from one end side. ing. The second base end portion 62A is formed to have a diameter larger than the hole diameter of the band-side second insertion holes 24F and 24R (see FIG. 4 for 24R). The second shaft portion 62B is formed so as to project from the second base end portion 62A at least longer than the bandwidth of the fixed band 20F.

固定バンド２０Ｆの他端部を支持ブラケット１１Ｆに取り付ける際は、まず、固定バンド２０Ｆのバンド側第２挿通穴２４Ｆ，２４Ｒをブラケット側第２挿通穴６１Ｆ，６１Ｒ及び、軸支部材６６の貫通穴６６Ａに位置合わせし、これらバンド側第２挿通穴２４Ｆ，２４Ｒ、ブラケット側第２挿通穴６１Ｆ，６１Ｒ及び、貫通穴６６Ａに第２連結ピン６２の第２軸部６２Ｂを挿入する。そして、第２軸部６２Ｂのバンド側第２挿通穴６２Ｆから突出した先端部にスナップリング６２Ｃ及びスナップピン６２Ｄを順に係合させることにより、固定バンド２０Ｆの他端部が前後の型板部１２Ｄ，１２Ｅに取り付けられるようになっている。 When attaching the other end of the fixing band 20F to the support bracket 11F, first, the band-side second insertion holes 24F and 24R of the fixing band 20F are inserted into the bracket-side second insertion holes 61F and 61R and the through holes of the shaft support member 66. Aligned with 66A, the second shaft portion 62B of the second connecting pin 62 is inserted into the band-side second insertion holes 24F and 24R, the bracket-side second insertion holes 61F and 61R, and the through hole 66A. Then, by engaging the snap ring 62C and the snap pin 62D in order with the tip portion of the second shaft portion 62B protruding from the band-side second insertion hole 62F, the other end of the fixing band 20F is the front and rear template portions 12D. , 12E can be attached.

本実施形態では、固定バンド２０Ｆの他端部を二股に分岐形成することにより、固定バンド２０Ｆの他端両側部が第２連結ピン６２によって安定的に支持されるため、バンドを一箇所で支持する従来構造に比べ、固定バンド２０Ｆの捩じれを効果的に防止することができる。なお、第２連結ピン６２を挿入する方向は、図示例とは反対方向であってもよい。また、第２軸部６２Ｂの先端部に係合する部材は、スナップリング６２Ｃやスナップピン６２Ｄに限定されず、他の係止部材を用いてもよい。 In the present embodiment, the other end of the fixed band 20F is bifurcated so that both sides of the other end of the fixed band 20F are stably supported by the second connecting pin 62, so that the band is supported at one place. It is possible to effectively prevent the fixing band 20F from being twisted as compared with the conventional structure. The direction in which the second connecting pin 62 is inserted may be opposite to that shown in the illustrated example. Further, the member engaged with the tip end portion of the second shaft portion 62B is not limited to the snap ring 62C and the snap pin 62D, and other locking members may be used.

固定板部６３は、前後の型板部１２Ｄ，１２Ｅの車体幅方向外側の先端部を一体に繋ぐように、これら先端部に溶接等により接合されている。固定板部６３は、好ましくは、その板平面がブラケット側第２挿通穴６１Ｆ，６１Ｒの長径方向と略直交するように設けられている。固定板部６３の略中心部には、ボルト部材６５の雄ネジ部６５Ａを挿通させる不図示の貫通穴が形成されている。 The fixing plate portion 63 is joined to the front and rear template portions 12D and 12E by welding or the like so as to integrally connect the tip portions on the outer side in the vehicle body width direction. The fixing plate portion 63 is preferably provided so that the plate plane thereof is substantially orthogonal to the major axis direction of the bracket side second insertion holes 61F and 61R. A through hole (not shown) through which the male screw portion 65A of the bolt member 65 is inserted is formed in the substantially central portion of the fixing plate portion 63.

雌ネジ部６４（図４参照）は、例えば、固定板部６３の下面の貫通穴周囲に溶接等により固定される裏面ナットである。雌ネジ部６４には、ボルト部材６５の雄ネジ部６５Ａが、その軸心をブラケット側第２挿通穴６１Ｆ，６１Ｒの長径方向と略平行にした状態で螺合される。なお、雌ネジ部６４を設ける位置は、固定板部６３の上面側であってもよい。 The female screw portion 64 (see FIG. 4) is, for example, a back surface nut fixed around a through hole on the lower surface of the fixing plate portion 63 by welding or the like. The male screw portion 65A of the bolt member 65 is screwed into the female screw portion 64 in a state where the axis thereof is substantially parallel to the major axis direction of the second insertion holes 61F and 61R on the bracket side. The position where the female screw portion 64 is provided may be on the upper surface side of the fixing plate portion 63.

ボルト部材６５の雄ネジ部６５Ａには、固定板部６３の上面に着座して、雄ネジ部６５Ａの雌ネジ部６４との螺合位置を所定部位でロックするダブルナットとして機能する回転規制ナット６５Ｃが設けられている。なお、回転規制ナット６５Ｃを設ける位置は図示例に限定されず、雌ネジ部６４よりも下方の雄ネジ部６５Ａであってもよい。この場合、回転規制ナット６５Ｃは雌ネジ部６４の下面に着座させればよい。 The male screw portion 65A of the bolt member 65 is a rotation restricting nut that sits on the upper surface of the fixing plate portion 63 and functions as a double nut that locks the screwing position of the male screw portion 65A with the female screw portion 64 at a predetermined portion. 65C is provided. The position where the rotation restricting nut 65C is provided is not limited to the illustrated example, and may be a male screw portion 65A below the female screw portion 64. In this case, the rotation restricting nut 65C may be seated on the lower surface of the female screw portion 64.

軸支部材６６は、略立方体状を呈しており、その中心部には第２連結ピン６２の第２軸部６２Ｂを挿通させる貫通穴６６Ａ（図４参照）が形成されている。貫通穴６６Ａの穴径は、第２軸部６２Ｂの外径よりも大きく形成されており、第２軸部６２Ｂが軸支部材６６によって回転可能に軸支されるようになっている。 The shaft support member 66 has a substantially cubic shape, and a through hole 66A (see FIG. 4) through which the second shaft portion 62B of the second connecting pin 62 is inserted is formed in the central portion thereof. The hole diameter of the through hole 66A is formed to be larger than the outer diameter of the second shaft portion 62B, and the second shaft portion 62B is rotatably supported by the shaft support member 66.

ジョイント機構６７は、上端側から下端側に向かうに従い拡径する略円錐台形状に形成されている。ジョイント機構６７の上端部は、ボルト部材６５の雄ネジ部６５Ａの先端部に一体回転可能に固定されている。また、ジョイント機構６７の下端部は、軸支部材６６の上面部に、雄ネジ部６５Ａの軸心方向に軸支部材６６と一体移動可能、且つ、雄ネジ部６５Ａの軸心を中心に軸支部材６６に対して相対回転自在となるように連結されている。 The joint mechanism 67 is formed in a substantially truncated cone shape whose diameter increases from the upper end side to the lower end side. The upper end of the joint mechanism 67 is integrally rotatably fixed to the tip of the male screw portion 65A of the bolt member 65. Further, the lower end portion of the joint mechanism 67 can be integrally moved to the upper surface portion of the shaft support member 66 in the axial direction of the male screw portion 65A with the shaft support member 66, and the shaft is centered on the axial center of the male screw portion 65A. It is connected so as to be relatively rotatable with respect to the support member 66.

すなわち、雌ネジ部６４と螺合するボルト部材６５を回転させると、ジョイント機構６７及び、軸支部材６６が、ボルト部材６５と一体に雄ネジ部６５Ａの軸心方向に併進運動する一方、ボルト部材６５の回転力はジョイント機構６７のみに伝達され、軸支部材６６には伝達されないようになっている。 That is, when the bolt member 65 screwed with the female screw portion 64 is rotated, the joint mechanism 67 and the shaft support member 66 move in parallel with the bolt member 65 in the axial direction of the male screw portion 65A, while the bolt. The rotational force of the member 65 is transmitted only to the joint mechanism 67 and not to the shaft support member 66.

以上詳述したバンド張力調整機構６０Ｆ，６０Ｒによれば、固定バンド２０Ｆ，２０Ｒの張力を調整する際は、ナット部６５Ｂに工具等を装着してボルト部材６５を回転させると、ジョイント機構６７、軸支部材６６及び、第２連結ピン６２がボルト部材６５と一体に雄ネジ部６５Ａの軸心方向（ブラケット側第２挿通穴６１Ｆ，６１Ｒの長径方向）に併進運動するように構成されている。 According to the band tension adjusting mechanisms 60F and 60R described in detail above, when adjusting the tension of the fixed bands 20F and 20R, when a tool or the like is attached to the nut portion 65B and the bolt member 65 is rotated, the joint mechanism 67, The shaft support member 66 and the second connecting pin 62 are configured to move in parallel with the bolt member 65 in the axial center direction of the male screw portion 65A (the major axis direction of the bracket side second insertion holes 61F and 61R). ..

すなわち、ボルト部材６５を上方視で時計回りに回転させれば、ボルト部材６５、ジョイント機構６７、軸支部材６６及び、第２連結ピン６２が一体に図３中の矢印Ｘ方向に移動することで、固定バンド２０Ｆ，２０Ｒの張力が強められる。一方、ボルト部材６５を上方視で反時計回りに回転させれば、ボルト部材６５、ジョイント機構６７、軸支部材６６及び、第２連結ピン６２が一体に図３中の矢印Ｙ方向に移動することで、固定バンド２０Ｆ，２０Ｒの張力が弱められるようになっている。 That is, if the bolt member 65 is rotated clockwise when viewed upward, the bolt member 65, the joint mechanism 67, the shaft support member 66, and the second connecting pin 62 are integrally moved in the direction of arrow X in FIG. Then, the tension of the fixed bands 20F and 20R is strengthened. On the other hand, if the bolt member 65 is rotated counterclockwise when viewed upward, the bolt member 65, the joint mechanism 67, the shaft support member 66, and the second connecting pin 62 are integrally moved in the direction of arrow Y in FIG. As a result, the tension of the fixed bands 20F and 20R is weakened.

このような固定バンド２０Ｆ，２０Ｒの張力調整作業は、固定バンド２０Ｆ，２０Ｒの一端部及び他端部が第１及び第２連結ピン４２，６２によって支持ブラケット１１Ｆ，１１Ｒに支持され、固定バンド２０Ｆ，２０Ｒの内周が燃料タンク５０のタンク胴部５１の外周に安定的に沿わされた状態で行われる。すなわち、ボルト部材６５を締め付ける際は片手のみで工具を操作すればよく、両手を用いる従来構造に比べ、作業性を効果的に向上することができる。 In such tension adjusting work of the fixed bands 20F and 20R, one end and the other end of the fixed bands 20F and 20R are supported by the support brackets 11F and 11R by the first and second connecting pins 42 and 62, and the fixed band 20F. , 20R is performed in a state where the inner circumference is stably along the outer circumference of the tank body 51 of the fuel tank 50. That is, when tightening the bolt member 65, the tool may be operated with only one hand, and workability can be effectively improved as compared with the conventional structure using both hands.

また、ボルト部材６５の締め付けによる回転力は、ジョイント機構６７のみに伝達され、軸支部材６６及び、軸支部材６６に挿通された第２連結ピン６２、さらには、第２連結ピン６２に支持された固定バンド２０Ｆ，２０Ｒには伝達されないように構成されている。これにより、ボルト部材６５の締め付けに伴い固定バンド２０Ｆ，２０Ｒが捩じれることを確実に防止することができる。また、ボルト部材６５の締め付けに伴い固定バンド２０Ｆ，２０Ｒの端部に応力が集中して破損を招くことも効果的に防止することが可能になる。 Further, the rotational force due to the tightening of the bolt member 65 is transmitted only to the joint mechanism 67, and is supported by the shaft support member 66, the second connecting pin 62 inserted through the shaft support member 66, and further, the second connecting pin 62. It is configured so as not to be transmitted to the fixed bands 20F and 20R. As a result, it is possible to reliably prevent the fixing bands 20F and 20R from being twisted due to the tightening of the bolt member 65. Further, it is possible to effectively prevent the stress from being concentrated on the ends of the fixing bands 20F and 20R and causing damage due to the tightening of the bolt member 65.

なお、本発明は、上述の実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で、適宜変形して実施することが可能である。 The present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented without departing from the spirit of the present invention.

例えば、バンド張力調整機構６０Ｆ，６０Ｒは、支持ブラケット１１Ｆ，１１Ｒの車体幅方向外側の端部側に設けられるものして説明したが、バンド張力調整機構６０を支持ブラケット１１Ｆ，１１Ｒの上端側、バンド連結機構４０Ｆ，４０Ｒを車体幅方向外側の端部側に入れ替えて配置してもよい。 For example, the band tension adjusting mechanisms 60F and 60R have been described as being provided on the outer end side of the support brackets 11F and 11R in the vehicle body width direction, but the band tension adjusting mechanism 60 is provided on the upper end side of the support brackets 11F and 11R. The band connecting mechanisms 40F and 40R may be replaced with each other on the outer end side in the vehicle body width direction.

また、タンクユニット１０が取り付けられる位置は、シャシフレーム２，３に限定されず、クロスメンバ４等の他の車体部位に取り付けられてもよい。 Further, the position where the tank unit 10 is attached is not limited to the chassis frames 2 and 3, and may be attached to other vehicle body parts such as the cross member 4.

また、支持ブラケット１１Ｆ，１１Ｒの個数は、前後一対（２個）として説明したが、燃料タンク５０のタンク胴部５１の長さに応じてそれらの個数を増やしてもよい。 Further, although the number of the support brackets 11F and 11R has been described as a pair of front and rear (two), the number of the support brackets 11F and 11R may be increased according to the length of the tank body 51 of the fuel tank 50.

また、本実施形態の適用範囲は、天然ガスを貯留する燃料タンク５０に限定されず、支持ブラケット１１Ｆ，１１Ｒに支持されるタンクであれば、軽油等の他の燃料を貯留する燃料タンク、或いは、コンプレッサ等により圧縮される圧縮エアーを貯留する高圧タンク等であってもよい。 Further, the scope of application of this embodiment is not limited to the fuel tank 50 for storing natural gas, and if the tank is supported by the support brackets 11F and 11R, a fuel tank for storing other fuel such as light oil, or a fuel tank for storing other fuel such as light oil, or , A high-pressure tank or the like for storing compressed air compressed by a compressor or the like may be used.

１ 車体フレーム
２，３ シャシフレーム
４ クロスメンバ
１０ タンクユニット
１１Ｆ，１１Ｒ 支持ブラケット
１２Ａ 固定部
１２Ｂ 傾斜部
１２Ｃ 支持部
１２Ｄ，１２Ｅ 型板部
１２Ｆ 支持板部
２０Ｆ，２０Ｒ 固定バンド
２２Ｆ，２２Ｒ バンド側第１挿通穴
２４Ｆ，２４Ｒ バンド側第２挿通穴
４０Ｆ，４０Ｒ バンド連結機構
４１Ｆ，４１Ｒ ブラケット側第１挿通穴
４２ 第１連結ピン
５０ 燃料タンク
５１ タンク胴部
５２ タンク前端部
５３ タンク後端部
６０Ｆ，６０Ｒ バンド張力調整機構
６１Ｆ，６１Ｒ ブラケット側第２挿通穴
６２ 第２連結ピン
６３ 固定板部
６４ 雌ネジ部
６５ ボルト部材
６５Ａ 雄ネジ部
６６ 軸支部材
６７ ジョイント機構 1 Body frame 2,3 Chassis frame 4 Cross member 10 Tank unit 11F, 11R Support bracket 12A Fixed part 12B Inclined part 12C Support part 12D, 12E Mold plate part 12F Support plate part 20F, 20R Fixed band 22F, 22R Band side 1st Insertion hole 24F, 24R Band side second insertion hole 40F, 40R Band connection mechanism 41F, 41R Bracket side first insertion hole 42 First connection pin 50 Fuel tank 51 Tank body 52 Tank front end 53 Tank rear end 60F, 60R Band tension adjustment mechanism 61F, 61R Bracket side second insertion hole 62 Second connecting pin 63 Fixing plate part 64 Female thread part 65 Bolt member 65A Male thread part 66 Shaft support member 67 Joint mechanism

Claims (4)

車体側から延びると共に、タンクの少なくとも一部を支持するブラケットと、
前記ブラケットの車体側の第１所定部位から延出端側の第２所定部位に架け渡されて、前記タンクを前記ブラケットに結束するバンド部材と、
前記バンド部材の一端部を前記第１所定部位にピン連結する第１ピン部材と、
前記バンド部材の他端部を前記第２所定部位にピン連結する第２ピン部材と、
前記ブラケットに長穴状に形成されると共に、前記第１ピン部材又は前記第２ピン部材の一方を長径方向に移動可能に挿通させる挿通穴と、
前記挿通穴の長径方向と平行に延びる雄ネジ部を有する雄ネジ部材と、
前記ブラケットに設けられると共に、前記雄ネジ部が螺合する雌ネジ部と、
前記雄ネジ部材と、前記挿通穴に挿通される前記第１ピン部材又は前記第２ピン部材の一方とを、前記雄ネジ部の軸心を中心に互いに相対回転自在に連結するジョイント機構と、を備える
ことを特徴とするタンク取付構造。 A bracket that extends from the vehicle body and supports at least a part of the tank,
A band member that is bridged from a first predetermined portion on the vehicle body side of the bracket to a second predetermined portion on the extension end side and binds the tank to the bracket.
A first pin member that pin-connects one end of the band member to the first predetermined portion,
A second pin member that pin-connects the other end of the band member to the second predetermined portion,
An insertion hole formed in the bracket in the shape of an elongated hole and allowing one of the first pin member or the second pin member to be movably inserted in the major axis direction.
A male screw member having a male screw portion extending in parallel with the major axis direction of the insertion hole,
A female threaded portion provided on the bracket and to which the male threaded portion is screwed,
And the male screw member, a joint mechanism for a one of a first pin member and the second pin member is inserted into the insertion hole, is relatively rotatably connected to each other around the axis of the male threaded portion, A tank mounting structure characterized by being equipped with. 前記バンド部材の前記一端部及び前記他端部の少なくとも一方が二股に分岐形成されると共に、当該分岐形成された部位の各先端部に前記第１ピン部材又は前記第２ピン部材が挿通される
請求項１に記載のタンク取付構造。 At least one of the one end and the other end of the band member is bifurcated, and the first pin member or the second pin member is inserted into each tip of the branched portion. The tank mounting structure according to claim 1. 前記タンクが前記ブラケットに載置される円筒状のタンク胴部を含み、前記挿通穴が、その長径方向を前記タンク胴部の外周接線方向と平行になるように形成された
請求項１又は２に記載のタンク取付構造。 Claim 1 or 2 in which the tank includes a cylindrical tank body mounted on the bracket, and the insertion hole is formed so that the major axis direction thereof is parallel to the outer peripheral tangential direction of the tank body. The tank mounting structure described in. 前記ブラケットが互いに対向する一対の型板部を有すると共に、前記挿通穴が前記一対の型板部にそれぞれ貫通形成されており、前記雌ネジ部が前記一対の型板部に接合された固定板部に設けられ、前記一対の型板部の間に前記挿通穴に挿通された前記第１ピン部材又は前記第２ピン部材の一方を軸支する軸支部材が配設され、前記ジョイント機構が前記雄ネジ部材と前記軸支部材とを相対回転自在に連結する
請求項１から３の何れか一項に記載のタンク取付構造。 The brackets have a pair of template portions facing each other, the insertion holes are formed through the pair of template portions, and the female screw portions are joined to the pair of template portions. A shaft support member provided in the portion and pivotally supporting one of the first pin member or the second pin member inserted into the insertion hole is disposed between the pair of template portions, and the joint mechanism is provided. The tank mounting structure according to any one of claims 1 to 3, wherein the male screw member and the shaft support member are connected so as to be relatively rotatable.
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