JP2006007957A - Vibration-proof support structure of fuel tank for vehicle - Google Patents

Vibration-proof support structure of fuel tank for vehicle Download PDF

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Publication number
JP2006007957A
JP2006007957A JP2004187781A JP2004187781A JP2006007957A JP 2006007957 A JP2006007957 A JP 2006007957A JP 2004187781 A JP2004187781 A JP 2004187781A JP 2004187781 A JP2004187781 A JP 2004187781A JP 2006007957 A JP2006007957 A JP 2006007957A
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Japan
Prior art keywords
cushion rubber
vibration
protrusion
vehicle
tank body
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Granted
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JP2004187781A
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JP4690666B2 (en
Inventor
Kunio Miyauchi
邦夫 宮内
Yuji Muto
雄二 武藤
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Honda Motor Co Ltd
Yamashita Rubber Co Ltd
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Honda Motor Co Ltd
Yamashita Rubber Co Ltd
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Priority to JP2004187781A priority Critical patent/JP4690666B2/en
Priority to TW094118622A priority patent/TWI269723B/en
Priority to DE102005027936A priority patent/DE102005027936B4/en
Priority to GB0512639A priority patent/GB2415479B/en
Priority to CNB2005100796661A priority patent/CN1326720C/en
Publication of JP2006007957A publication Critical patent/JP2006007957A/en
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Publication of JP4690666B2 publication Critical patent/JP4690666B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
    • F16F1/44—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded mainly in compression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B60K15/067—Mounting of tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • F16F1/376—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having projections, studs, serrations or the like on at least one surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Vibration Prevention Devices (AREA)
  • Gasket Seals (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To suitably and compatibly realize a holding load and vibration-proof function of a cushion rubber interposed between a fuel tank and a vehicle body. <P>SOLUTION: A first protrusion 30, a second protrusion 31, and a third protrusion 32 having different protrusion height are formed on a surface in contact with a floor panel 24 of the vibration-proof cushion rubber 23 interposed between a tank main body 11 and the floor panel 24. A vibration-proof function for preventing noise or vibration of the tank main body 11 from being transmitted to the vehicle body can be ensured while ensuring the holding function of the tank main body 11 on the floor panel 24 by changing a compressed amount of the protrusions 30, 31, 32 according to the height of the respective protrusions 30, 31, 32 when the tank main body 11 is pressed on the floor panel 24. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、タンク本体および車体間にクッションラバーを介在させた車両用燃料タンクの防振支持構造に関する。   The present invention relates to an anti-vibration support structure for a vehicle fuel tank in which a cushion rubber is interposed between a tank body and a vehicle body.

自動車の燃料タンクをボルト締めあるいは金属バンドを介して車体に取り付ける際に、タンク本体の表面と車体との当接部にクッションラバーを介在させることで、タンク本体内で燃料が波立って発生する騒音や振動が車体に伝達され難くするものが、下記特許文献１や特許文献２により公知である。   When a vehicle fuel tank is bolted or attached to a vehicle body via a metal band, fuel is generated in the tank body by interposing a cushion rubber at the abutment between the surface of the tank body and the vehicle body. Patent Documents 1 and 2 listed below make noise and vibration difficult to be transmitted to the vehicle body.

ところで上記従来のクッションラバーは一定厚さの板状ラバーで構成されているため、充分な防振機能を発揮させることが困難であった。そこでクッションラバーの断面を波型やＭ字型にし、その突起部分を燃料タンクに当接させることで防振機能を高めるものが知られている。
特開平６−１０６９９９号公報 実開平５−８９０６０号公報 By the way, since the conventional cushion rubber is composed of a plate-like rubber having a constant thickness, it has been difficult to exert a sufficient vibration-proof function. In view of this, there is known a cushion rubber having a corrugated or M-shaped cross section, and its protruding portion is brought into contact with a fuel tank to enhance the vibration-proof function.
JP-A-6-106999 Japanese Utility Model Publication No. 5-89060

しかしながら、燃料タンクと車体との間に介在させるクッションラバーを波型断面やＭ字型断面にするだけでは、タンク本体を車体に強固に保持する保持機能の確保と、タンク本体の騒音や振動が車体に伝わり難くする防振機能の確保とを好適に両立させることが困難であった。   However, if the cushion rubber interposed between the fuel tank and the vehicle body only has a corrugated cross section or an M-shaped cross section, it is possible to secure a holding function for firmly holding the tank main body to the vehicle body and to reduce noise and vibration of the tank main body. It has been difficult to achieve both the vibration-proof function that makes it difficult to be transmitted to the vehicle body.

本発明は前述の事情に鑑みてなされたもので、燃料タンクと車体との間に介在させるクッションラバーの保持荷重および防振機能を好適に両立させることを目的とする。   The present invention has been made in view of the above-described circumstances, and an object of the present invention is to suitably achieve both a holding load and a vibration isolating function of a cushion rubber interposed between a fuel tank and a vehicle body.

上記目的を達成するために、請求項１に記載された発明によれば、タンク本体および車体間にクッションラバーを介在させた車両用燃料タンクの防振支持構造であって、クッションラバーの車体に接する面に、突出高さが異なる複数の突起を形成したことを特徴とする車両用燃料タンクの防振支持構造が提案される。   In order to achieve the above object, according to the first aspect of the present invention, there is provided a vibration isolating support structure for a fuel tank for a vehicle in which a cushion rubber is interposed between the tank body and the vehicle body. An anti-vibration support structure for a fuel tank for a vehicle is proposed in which a plurality of protrusions having different protrusion heights are formed on the contact surface.

また請求項２に記載された発明によれば、請求項１の構成に加えて、クッションラバーは、車体に接する面の材質がタンク本体に接する面の材質よりも硬質であることを特徴とする車両用燃料タンクの防振支持構造が提案される。   According to the invention described in claim 2, in addition to the structure of claim 1, the cushion rubber is characterized in that the material of the surface contacting the vehicle body is harder than the material of the surface contacting the tank body. An anti-vibration support structure for a vehicle fuel tank is proposed.

また請求項３に記載された発明によれば、請求項１または請求項２の構成に加えて、クッションラバーの最も外側に位置する突起の外側面を内向きに傾斜させたことを特徴とする車両用燃料タンクの防振支持構造が提案される。   According to a third aspect of the invention, in addition to the configuration of the first or second aspect, the outer surface of the outermost protrusion of the cushion rubber is inclined inward. An anti-vibration support structure for a vehicle fuel tank is proposed.

尚、実施例のフロアパネル２４は本発明の車体に対応し、実施例の第１〜第３突起３０，３１，３２は本発明の突起３０，３１，３２に対応する。   In addition, the floor panel 24 of an Example respond | corresponds to the vehicle body of this invention, and the 1st-3rd processus | protrusion 30,31,32 of an Example respond | corresponds to processus | protrusion 30,31,32 of this invention.

請求項１の構成によれば、タンク本体および車体間に介在させるクッションラバーの車体に接する面に、突出高さが異なる複数の突起を形成したので、各突起の高さに応じて該突起の圧縮量を変化させることで、車体に対するタンク本体の保持機能を確保しながら、タンク本体の騒音や振動が車体に伝達されるのを防止する防振機能を確保することができる。   According to the configuration of the first aspect, since the plurality of protrusions having different protrusion heights are formed on the surface of the cushion rubber interposed between the tank main body and the vehicle body, the protrusions having different protrusion heights are formed according to the height of each protrusion. By changing the amount of compression, it is possible to ensure a vibration isolating function for preventing the noise and vibration of the tank body from being transmitted to the vehicle body while ensuring the function of holding the tank body with respect to the vehicle body.

請求項２の構成によれば、クッションラバーの車体に接する面の材質をタンク本体に接する面の材質よりも硬質としたので、クッションラバーの軟質部分をタンク本体に接触させてタンク本体から車体への騒音や振動の伝達を一層効果的に遮断することができる。   According to the second aspect of the present invention, the material of the surface of the cushion rubber that contacts the vehicle body is harder than the material of the surface that contacts the tank body, so that the soft portion of the cushion rubber is brought into contact with the tank body to move from the tank body to the vehicle body. The transmission of noise and vibration can be blocked more effectively.

請求項３の構成によれば、クッションラバーの最も外側に位置する突起の外側面を内向きに傾斜させたので、前記突起がタンク本体から受ける荷重で外側に倒れるのを防止し、クッションラバーによるタンク本体の支持を一層確実なものとすることができる。   According to the configuration of the third aspect, since the outer surface of the outermost protrusion of the cushion rubber is inclined inward, the protrusion is prevented from falling outward by a load received from the tank body. The support of the tank body can be further ensured.

以下、本発明の実施の形態を、添付の図面に示した本発明の実施例に基づいて説明する。   DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.

図１〜図６は本発明の第１実施例を示すもので、図１は車両用燃料タンクの斜視図、図２は図１の２−２線断面図、図３は図２の３部拡大図、図４はクッションラバーをフロアパネル側から見た斜視図、図５はクッションラバーをタンク本体側から見た斜視図、図７はクッションラバーの圧縮量と圧縮荷重との関係を示すグラフである。   1 to 6 show a first embodiment of the present invention. FIG. 1 is a perspective view of a vehicle fuel tank, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. 4 is a perspective view of the cushion rubber as seen from the floor panel side, FIG. 5 is a perspective view of the cushion rubber as seen from the tank body side, and FIG. 7 is a graph showing the relationship between the compression amount and the compression load of the cushion rubber. It is.

図１および図２に示すように、車両用の燃料タンクＴの合成樹脂で一体成形されたタンク本体１１は、その上壁１２に形成した開口１４を着脱自在に覆う取付フランジ１５の下面にステー１６を介して燃料ポンプユニット１７が支持されており、燃料ポンプユニット１７から延びるフィードパイプ１８が取付フランジ１５を貫通してエンジン（図示せず）に接続されるとともに、エンジンからのリターンパイプ１９が取付フランジ１５を貫通して燃料タンクＴ内に延びている。また取付フランジ１５の下面にフロート２０を備えた液面センサ２１が設けられる。   As shown in FIGS. 1 and 2, a tank body 11 integrally formed of a synthetic resin for a fuel tank T for a vehicle has a stay on a lower surface of a mounting flange 15 that detachably covers an opening 14 formed in an upper wall 12 thereof. A fuel pump unit 17 is supported via 16, a feed pipe 18 extending from the fuel pump unit 17 passes through the mounting flange 15 and is connected to an engine (not shown), and a return pipe 19 from the engine It extends through the mounting flange 15 and into the fuel tank T. A liquid level sensor 21 having a float 20 is provided on the lower surface of the mounting flange 15.

フロアパネル２４の下面に前後のクロスメンバ２５，２６が配置されており、両端が前後のクロスメンバ２５，２６にボルト２７…で固定された複数本（例えば２本）の金属バンド２８，２８を、タンク本体１１の下壁１３の外面に掛け渡すことで、タンク本体１１がフロアパネル２４の下面に固定される。このとき、タンク本体１１の上壁１２の外面とフロアパネル２４の下面との間に複数個（実施例では４個）のクッションラバー２３…が配置されており、これらのクッションラバー２３…によって、タンク本体１１内の燃料の波立ち等による振動や騒音が車体に伝達されるのが防止される。   Front and rear cross members 25, 26 are arranged on the lower surface of the floor panel 24, and a plurality of (for example, two) metal bands 28, 28 having both ends fixed to the front and rear cross members 25, 26 with bolts 27. The tank body 11 is fixed to the lower surface of the floor panel 24 by being hung on the outer surface of the lower wall 13 of the tank body 11. At this time, a plurality (four in the embodiment) of cushion rubbers 23 are arranged between the outer surface of the upper wall 12 of the tank body 11 and the lower surface of the floor panel 24, and these cushion rubbers 23. It is possible to prevent vibrations and noise caused by the fuel ripples in the tank body 11 from being transmitted to the vehicle body.

図３〜図５を併せて参照すると明らかなように、一体成形された平面視で矩形状のクッションラバー２３は、フロアパネル２４に接触する面（図４参照）とタンク本体１１に接触する面（図５参照）とに複数の突起が形成される。   As is clear from FIGS. 3 to 5, the integrally formed rectangular cushion rubber 23 in plan view has a surface that contacts the floor panel 24 (see FIG. 4) and a surface that contacts the tank body 11. (See FIG. 5), a plurality of protrusions are formed.

図３および図４から明らかなように、クッションラバー２３のフロアパネル２４に接触する面には、平坦な底面２９からの突出高さが最も高い第１突起３０…と、突出高さが２番目に高い第２突起３１…と、突出高さが最も低い第３突起３２…とが、クッションラバー２３の短辺方向に３列に配置されており、各々の列においてクッションラバー２３の長辺方向両端に一対の第１突起３０，３０が配置され、その内側に一対の第３突起３２，３２が配置され、その内側に１個の第２突起３１が配置される。各々の第２突起３１の頂部には、クッションラバー２３の長辺方向に延びる溝３１ａが形成される。   As apparent from FIGS. 3 and 4, the surface of the cushion rubber 23 that contacts the floor panel 24 has first protrusions 30 with the highest protrusion height from the flat bottom surface 29, and the protrusion height is second. Are arranged in three rows in the short side direction of the cushion rubber 23, and in each row, the long side direction of the cushion rubber 23 is arranged. A pair of first protrusions 30 and 30 are disposed at both ends, a pair of third protrusions 32 and 32 are disposed inside, and one second protrusion 31 is disposed inside thereof. A groove 31 a extending in the long side direction of the cushion rubber 23 is formed at the top of each second protrusion 31.

図３および図５から明らかなように、クッションラバー２３のタンク本体１１に接触する面には、平坦な底面３３からの突出高さが等しい第１突起３４…および第２突起３５…が、クッションラバー２３の短辺方向に３列に配置されており、各々の列においてクッションラバー２３の長辺方向両端に一対の第１突起３４，３４が配置され、その内側に１個の第２突起３５が配置される。   As apparent from FIGS. 3 and 5, the surface of the cushion rubber 23 that contacts the tank main body 11 has the first protrusion 34... And the second protrusion 35... Having the same protrusion height from the flat bottom surface 33. The rubber 23 is arranged in three rows in the short side direction, and in each row, a pair of first protrusions 34 and 34 are arranged at both ends in the long side direction of the cushion rubber 23, and one second protrusion 35 is disposed inside thereof. Is placed.

しかして、燃料タンクＴのタンク本体１１を２本の金属バンド２８，２８でフロアパネル２４の下面に押し付けて固定する際に、各クッションラバー２３の一方の面（図５参照）がタンク本体１１に当接し、他方の面（図４参照）がフロアパネル２４に当接する。そして金属バンド２８，２８の張力でタンク本体１１がフロアパネル２４に向けて付勢されるため、各クッションラバー２３はタンク本体１１およびフロアパネル２４間に挟まれて圧縮される。このとき、クッションラバー２３が受ける圧縮荷重が不足するとタンク本体１１をフロアパネル２４に確実に支持することができず、逆にクッションラバー２３が受ける圧縮荷重が過剰になると防振機能が低下して騒音や振動が車体に伝達され易くなるため、その圧縮荷重が下限値および上限値間に収まるように調整する必要がある。   Thus, when the tank body 11 of the fuel tank T is pressed against the lower surface of the floor panel 24 with the two metal bands 28, 28, one surface of each cushion rubber 23 (see FIG. 5) is attached to the tank body 11. The other surface (see FIG. 4) abuts on the floor panel 24. Since the tank body 11 is biased toward the floor panel 24 by the tension of the metal bands 28, 28, each cushion rubber 23 is sandwiched between the tank body 11 and the floor panel 24 and compressed. At this time, if the compressive load received by the cushion rubber 23 is insufficient, the tank body 11 cannot be reliably supported on the floor panel 24. Conversely, if the compressive load received by the cushion rubber 23 is excessive, the vibration isolation function is reduced. Since noise and vibration are easily transmitted to the vehicle body, it is necessary to adjust the compression load so that it falls between the lower limit value and the upper limit value.

図６に示すグラフは、横軸にクッションラバー２３の圧縮量をとり、縦軸にクッションラバー２３の圧縮荷重をとったもので、タンク本体１１の確実な支持と防振機能とを両立させるには、圧縮荷重を下限値および上限値の間に設定する必要がある。実線は本実施例の特性ラインであり、原点であるＡ点からＢ点までがクッションラバー２３のフロアパネル２４に接する面の第１突起３０…および第２突起３１…が圧縮される状態であり、Ｂ点からＣ点までが第１突起３０…、第２突起３１…および第３突起３２…が圧縮される状態であり、Ｃ点から右側が第１突起３０…、第２突起３１…および第３突起３２…に加えて第１突起３４…および第２突起３５…の全てが圧縮される状態である。このように、より多くの突起３０…、３１…，３２…，３４…，３５…が圧縮されるようになると、クッションラバー２３のばね定数が増加して実線で示す特性ラインの右上がりの勾配が強くなる。   In the graph shown in FIG. 6, the horizontal axis represents the compression amount of the cushion rubber 23, and the vertical axis represents the compression load of the cushion rubber 23. The compression load needs to be set between the lower limit value and the upper limit value. The solid line is the characteristic line of the present embodiment, and the first projection 30 ... and the second projection 31 ... on the surface of the cushion rubber 23 in contact with the floor panel 24 are compressed from the point A to the point B as the origin. The first projection 30 ..., the second projection 31 ... and the third projection 32 ... are compressed from the point B to the point C, and the first projection 30 ..., the second projection 31 ... and the right side from the point C are compressed. In addition to the third protrusions 32, all of the first protrusions 34 and the second protrusions 35 are compressed. In this way, when more protrusions 30 ..., 31 ..., 32 ..., 34 ..., 35 ... are compressed, the spring constant of the cushion rubber 23 increases, and the slope of the characteristic line indicated by the solid line increases to the right. Becomes stronger.

実施例では、タンク本体１１を金属バンド２８，２８で固定するとき、クッションラバー２３に加わる圧縮荷重が前記下限値となるように、つまりクッションラバー２３にＢ点の僅かに右側の圧縮量を与えておく。この状態からタンク本体１１に上向きの荷重が加わってクッションラバー２３の圧縮量が増加しても、その圧縮量がＢ点の直後からＣ点の直後までの有効ストロークの範囲にあれば、クッションラバー２３に加わる圧縮荷重が前記上限値を超えることはない。   In the embodiment, when the tank body 11 is fixed by the metal bands 28, 28, the compression load applied to the cushion rubber 23 is set to the lower limit value, that is, the cushion rubber 23 is given a compression amount slightly on the right side of the point B. Keep it. Even if an upward load is applied to the tank body 11 from this state and the amount of compression of the cushion rubber 23 increases, if the amount of compression is within the effective stroke range from immediately after point B to immediately after point C, the cushion rubber The compressive load applied to 23 does not exceed the upper limit.

一方、図６のグラフの破線は波型の断面を有する従来のクッションラバーの特性ラインであり、実施例の特性ライン（実線参照）に比べて特性ラインの右上がりの勾配が強いため、クッションラバー２３の圧縮荷重を下限値および上限値の間に収めるための有効ストロークの範囲が大幅に狭くなっている。実施例の有効ストロークが従来例の有効ストロークよりも広いのは、高さが異なる第１突起３０…、第２突起３１…、第３突起３２…，第１突起３４…および第２突起３５…が時間差をもって圧縮されるためであり、これにより実施例のクッションラバー２３はタンク本体１１を柔らかく支持して防振効果を一層高めることができる。   On the other hand, the broken line in the graph of FIG. 6 is a characteristic line of the conventional cushion rubber having a corrugated cross section, and the characteristic line (see solid line) of the embodiment has a stronger upward slope to the right, so the cushion rubber. The range of the effective stroke for accommodating the compression load of 23 between the lower limit value and the upper limit value is significantly narrowed. The effective stroke of the embodiment is wider than the effective stroke of the conventional example because the first protrusions 30, the second protrusions 31, the third protrusions 32, the first protrusions 34, and the second protrusions 35 have different heights. This is because the cushion rubber 23 of the embodiment can softly support the tank body 11 and further enhance the vibration isolation effect.

また第２突起３１…の先端に溝３１ａ…を形成したことにより、第２突起３１…がタンク本体１１に当接して圧縮されたときに、ばね定数が急激に増加するのを防止して実施例の特性ライン（実線参照）の右上がりの勾配を更になだらかにすることができる。   Further, the grooves 31a are formed at the tips of the second protrusions 31 to prevent the spring constant from rapidly increasing when the second protrusions 31 abut against the tank body 11 and are compressed. The upward slope of the example characteristic line (see solid line) can be further smoothed.

次に、図７に基づいて本発明の第２実施例を説明する。   Next, a second embodiment of the present invention will be described with reference to FIG.

第２実施例は、クッションラバー２３のタンク本体側部分２３Ａと、車体側部分２３Ｂとを、それぞれ異なる特性のラバーで二色成形したものである。具体的には、車体側部分２３Ｂを比較的に硬質の材料で構成し、タンク本体側部分２３Ａを比較的に軟質の材料で構成することにより、タンク本体１１の支持力を確保しながらタンク本体１１からフロアパネル２４に伝達される騒音や振動を一層効果的に遮断することができる。   In the second embodiment, the tank body side portion 23A and the vehicle body side portion 23B of the cushion rubber 23 are two-color molded with rubber having different characteristics. Specifically, the tank body portion 23B is made of a relatively hard material, and the tank body side portion 23A is made of a relatively soft material, so that the tank body 11 can be secured while securing the supporting force of the tank body 11. The noise and vibration transmitted from 11 to the floor panel 24 can be more effectively blocked.

次に、図８に基づいて本発明の第３実施例を説明する。   Next, a third embodiment of the present invention will be described with reference to FIG.

第３実施例は第１実施例の変形であって、クッションラバー２３の長辺方向両端に位置する第１突起３０…の外側面３０ａ…を内向きに角度αだけ傾斜させたものである。これにより、タンク本体１１に押し付けられた第１突起３０…が外側に倒れるのを防止し、タンク本体１１の支持を一層確実なものにすることができる。また第１突起３０…の外側面３０ａ…を傾けたことにより、第１突起３０…の断面積が小さくなって圧縮され易くなるため、クッションラバー２３の圧縮量を増加させてタンク本体１１の寸法のばらつきや搭載位置のばらつきを吸収し、タンク本体１１の支持を更に確実にすることができる。   The third embodiment is a modification of the first embodiment in which the outer surfaces 30a of the first protrusions 30 located at both ends in the long side direction of the cushion rubber 23 are inclined inward by an angle α. Thereby, it is possible to prevent the first protrusions 30... Pressed against the tank body 11 from falling outside, and to further ensure the support of the tank body 11. In addition, since the outer surface 30a of the first protrusion 30 is inclined, the cross-sectional area of the first protrusion 30 becomes small and it becomes easy to be compressed. And the mounting position can be absorbed, and the support of the tank body 11 can be further ensured.

尚、第１突起３０…の外側面３０ａ…を傾斜させるだけでなく、第２突起３１…を外力により倒れ易い方向と逆方向に予め傾斜させておくことで、その倒れを防止することができる。   In addition to inclining the outer surfaces 30a of the first projections 30 ..., the second projections 31 ... can be prevented from falling by being inclined in advance in a direction opposite to the direction in which the second projections 31 are easily fallen by external force. .

以上、本発明の実施例を説明したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。   Although the embodiments of the present invention have been described above, various design changes can be made without departing from the scope of the present invention.

例えば、実施例ではタンク本体１１がクッションラバー２３を介して当接する車体がフロアパネル２４であるが、車体はフロアパネル２４に限定されず、車体フレームや金属バンド２８であっても良い。   For example, in the embodiment, the vehicle body with which the tank body 11 abuts via the cushion rubber 23 is the floor panel 24, but the vehicle body is not limited to the floor panel 24 and may be a vehicle body frame or a metal band 28.

またタンク本体１１は成形が容易な合成樹脂製であることが望ましいが、金属製であっても良い。   The tank body 11 is preferably made of a synthetic resin that can be easily molded, but may be made of metal.

第１実施例に係る車両用燃料タンクの斜視図1 is a perspective view of a vehicle fuel tank according to a first embodiment. 図１の２−２線断面図2-2 sectional view of FIG. 図２の３部拡大図Part 3 enlarged view of FIG. クッションラバーをフロアパネル側から見た斜視図Perspective view of cushion rubber as seen from the floor panel クッションラバーをタンク本体側から見た斜視図Perspective view of cushion rubber as seen from the tank body side クッションラバーの圧縮量と圧縮荷重との関係を示すグラフGraph showing the relationship between the compression amount and compression load of cushion rubber 第２実施例に係る、前記図３に対応する図The figure corresponding to the said FIG. 3 based on 2nd Example. 第３実施例に係る、前記図３に対応する図The figure corresponding to the said FIG. 3 based on 3rd Example.

符号の説明Explanation of symbols

１１ タンク本体
２３ クッションラバー
２４ フロアパネル（車体）
３０ 第１突起（突起）
３０ａ 外側面
３１ 第２突起（突起）
３２ 第３突起（突起）
11 Tank body 23 Cushion rubber 24 Floor panel (vehicle body)
30 First protrusion (protrusion)
30a outer side surface 31 2nd protrusion (protrusion)
32 3rd protrusion (protrusion)

Claims (3)

タンク本体（１１）および車体（２４）間にクッションラバー（２３）を介在させた車両用燃料タンクの防振支持構造であって、
クッションラバー（２３）の車体（２４）に接する面に、突出高さが異なる複数の突起（３０，３１，３２）を形成したことを特徴とする車両用燃料タンクの防振支持構造。 An anti-vibration support structure for a vehicle fuel tank in which a cushion rubber (23) is interposed between a tank body (11) and a vehicle body (24),
An antivibration support structure for a fuel tank for a vehicle, wherein a plurality of protrusions (30, 31, 32) having different protrusion heights are formed on a surface of the cushion rubber (23) contacting the vehicle body (24). クッションラバー（２３）は、車体（２４）に接する面の材質がタンク本体（１１）に接する面の材質よりも硬質であることを特徴とする、請求項１に記載の車両用燃料タンクの防振支持構造。   2. The vehicle fuel tank protection device according to claim 1, wherein a material of a surface of the cushion rubber (23) in contact with the vehicle body (24) is harder than a material of a surface in contact with the tank body (11). Vibration support structure. クッションラバー（２３）の最も外側に位置する突起（３０）の外側面（３０ａ）を内向きに傾斜させたことを特徴とする、請求項１または請求項２に記載の車両用燃料タンクの防振支持構造。
3. The vehicle fuel tank prevention device according to claim 1, wherein an outer surface (30 a) of a projection (30) located on the outermost side of the cushion rubber (23) is inclined inward. Vibration support structure.
JP2004187781A 2004-06-25 2004-06-25 Anti-vibration support structure for vehicle fuel tank Expired - Fee Related JP4690666B2 (en)

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JP2004187781A JP4690666B2 (en) 2004-06-25 2004-06-25 Anti-vibration support structure for vehicle fuel tank
TW094118622A TWI269723B (en) 2004-06-25 2005-06-06 Vibration isolation support structure of fuel tank for vehicle
DE102005027936A DE102005027936B4 (en) 2004-06-25 2005-06-16 Vibration isolation support structure of a fuel tank for vehicles
GB0512639A GB2415479B (en) 2004-06-25 2005-06-21 Vibration isolation support structure of fuel tank for vehicle
CNB2005100796661A CN1326720C (en) 2004-06-25 2005-06-24 Vibration isolation support structure of fuel tank for vehicle

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TWI269723B (en) 2007-01-01
GB2415479A (en) 2005-12-28

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