JP5297178B2 - Vehicle power unit support structure - Google Patents

Vehicle power unit support structure Download PDF

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JP5297178B2
JP5297178B2 JP2008323977A JP2008323977A JP5297178B2 JP 5297178 B2 JP5297178 B2 JP 5297178B2 JP 2008323977 A JP2008323977 A JP 2008323977A JP 2008323977 A JP2008323977 A JP 2008323977A JP 5297178 B2 JP5297178 B2 JP 5297178B2
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power unit
stopper
mounting member
reverse
vibration isolating
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JP2010143467A (en
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啓太 酒井
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Daihatsu Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle power unit supporting structure which is less liable to vibration at starting the forward movement of a vehicle. <P>SOLUTION: In the vehicle power unit supporting structure, a clearance X1 between a stopper portion 11a and a forward movement side abutment portion 10a is set to be greater than a clearance X2 between the stopper portion 11a and a backward movement side abutment portion 10b in the condition of stopping a power unit. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、車体側に取り付けられる車体側取付部材と、パワーユニット側に取り付けられるパワーユニット側取付部材とを備え、前記車体側取付部材と前記パワーユニット側取付部材とを防振部材を介して連結して、車両の前進時において、前記パワーユニット側取付部材のストッパー部が当接することによりパワーユニットの前進側の変位を止める前進側被当接部を、前記車体側取付部材に備えると共に、車両の後進時において、前記パワーユニット側取付部材のストッパー部が当接することによりパワーユニットの後進側の変位を止める後進側被当接部を、前記車体取付部材に備える車両のパワーユニット支持構造に関する。   The present invention comprises a vehicle body side mounting member that is mounted on the vehicle body side and a power unit side mounting member that is mounted on the power unit side, wherein the vehicle body side mounting member and the power unit side mounting member are coupled via a vibration isolation member. When the vehicle is moving forward, the vehicle body side mounting member is provided with a forward contacted portion that stops the displacement on the forward side of the power unit by contacting the stopper portion of the power unit side mounting member. Further, the present invention relates to a power unit support structure for a vehicle in which a reverse-side contacted portion that stops a reverse-side displacement of the power unit by contacting a stopper portion of the power-unit-side mounting member is provided in the vehicle body mounting member.

上記構成を備える従来のパワーユニット支持構造としては、例えば、特許文献１の図１，図２，図４に開示されるように、車体側に取り付けられる円筒状の車体側取付金具１と、エンジン側に取り付けられるエンジン側取付金具２と、両取付金具１、２の間に介在されたゴム状弾性体からなる防振基体１０３とを備えており、鋼製の車体側取付金具１の内側に、この車体側取付金具１と間隔をおいて鋼製のエンジン側取付金具２が略同心状に配置されているものが知られている。
特開２００２−２４８９４８号公報 As a conventional power unit support structure having the above configuration, for example, as disclosed in FIGS. 1, 2 and 4 of Patent Document 1, a cylindrical vehicle body side mounting bracket 1 attached to the vehicle body side, and an engine side And an anti-vibration base 103 made of a rubber-like elastic body interposed between the two mounting brackets 1 and 2, and on the inside of the steel vehicle body mounting bracket 1, It is known that a steel engine side mounting bracket 2 is disposed substantially concentrically at a distance from the vehicle body side mounting bracket 1.
JP 2002-248948 A

上記エンジン側取付金具２の中央付近には、車体側取付金具１の内周面と軸直角方向に対向するように、略円盤状のストッパゴム部４が軸直角方向に突設されている。
ストッパゴム部４は、そのＳ方向を、軸直角方向の入力荷重の主入力方向として配置されている。 In the vicinity of the center of the engine side mounting bracket 2, a substantially disc-shaped stopper rubber portion 4 protrudes in the direction perpendicular to the axis so as to face the inner peripheral surface of the vehicle body side mounting bracket 1 in the direction perpendicular to the axis.
The stopper rubber portion 4 is arranged with the S direction as the main input direction of the input load in the direction perpendicular to the axis.

横置きのＦＦ型式の乗用車においては、上記Ｓ方向は、車両の前後方向に略一致する。
ＦＦ型式の乗用車におけるパワーユニット（エンジンとミッションとを連結した駆動ユニット）は、発進時にトルクロール軸周りにクランクシャフトが回る方向と反対方向に回転する。 In a laterally mounted FF type passenger car, the S direction substantially coincides with the longitudinal direction of the vehicle.
A power unit (drive unit in which an engine and a transmission are connected) in an FF type passenger car rotates in a direction opposite to the direction in which the crankshaft rotates around the torque roll shaft when starting.

上記特許文献１の図１に開示されるパワーユニット支持構造においては、Ｓ方向、即ち、車両前後方向における車体側取付金具１の内周面とストッパゴム部４との間の距離は、車両の前側と後側とにおいて略同じ程度に設定されている。   In the power unit support structure disclosed in FIG. 1 of Patent Document 1 above, the distance between the inner peripheral surface of the vehicle body side mounting bracket 1 and the stopper rubber portion 4 in the S direction, that is, the vehicle longitudinal direction is the front side of the vehicle. And about the same on the rear side.

通常、パワーユニットに入力される荷重は、後進発進時よりも前進発進時の方が大きいので、パワーユニットは後進発進時よりも前進発進時の方がより大きく変位し得る。
そのため、上記従来のパワーユニット支持構造においては、ストッパゴム部４と車体側取付金具１の内周面とが接触する頻度が車両の後進発進時よりも前進発進時の方が高くなり、特に、車両前方への急発進時において、ストッパゴム部４が車体側取付金具１の内周面に当たることによって振動が発生することがあった。
尚、車体側取付金具１をより大きな径を有するものに変更する等すれば、このような問題は解決するようにも思われるが、レイアウト上の制約があるため車体側取付金具１のサイズを容易に変更することはできない。 Usually, since the load input to the power unit is larger at the time of forward start than at the time of reverse start, the power unit can be displaced more greatly at the time of forward start than at the time of reverse start.
Therefore, in the conventional power unit support structure described above, the frequency of contact between the stopper rubber portion 4 and the inner peripheral surface of the vehicle body side mounting bracket 1 is higher at the time of forward start than at the time of reverse start of the vehicle. At the time of sudden start to the front, vibration may occur due to the stopper rubber portion 4 hitting the inner peripheral surface of the vehicle body side mounting bracket 1.
If the vehicle body side mounting bracket 1 is changed to one having a larger diameter, such a problem seems to be solved. However, due to layout restrictions, the size of the vehicle body side mounting bracket 1 is reduced. It cannot be changed easily.

本発明は、上記実情に鑑みてなされたものであって、その目的は、車両の前進発進時に振動が発生し難い車両のパワーユニット支持構造を提供することにある。   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle power unit support structure in which vibration is unlikely to occur when the vehicle starts moving forward.

上記の目的を達成するため、本発明のうちの請求項１に記載の発明では、
車体側に取り付けられる車体側取付部材と、パワーユニット側に取り付けられるパワーユニット側取付部材とを備え、前記車体側取付部材と前記パワーユニット側取付部材とを防振部材を介して連結して、
車両の前進時において、前記パワーユニット側取付部材のストッパー部が当接することによりパワーユニットの前進側の変位を止める前進側被当接部を、前記車体側取付部材に備えると共に、
車両の後進時において、前記パワーユニット側取付部材のストッパー部が当接することによりパワーユニットの後進側の変位を止める後進側被当接部を、前記車体取付部材に備え、
前記パワーユニットの停止状態において、前記ストッパー部と前記前進側被当接部との間隔が、前記ストッパー部と前記後進側被当接部との間隔よりも大きく設定され、前記ストッパー部の前記前進側被当接部に対向する側、又は前記前進側被当接部側に前進用防振ゴム部を備えると共に、前記ストッパー部の前記後進側被当接部に対向する側、又は前記後進側被当接部側に後進用防振ゴム部を備え、前記前進用防振ゴム部のゴム厚が、前記後進用防振ゴム部のゴム厚よりも厚く設定され、前記前進用防振ゴム部と前記前進側被当接部との距離と、前記後進用防振ゴム部と前記後進用被当接部との距離が、略同じに設定されている、又は、前記前進用防振ゴム部と前記ストッパー部との距離と、前記後進用防振ゴム部と前記ストッパー部との距離が略同じに設定されていることを特徴とする。 In order to achieve the above object, in the invention according to claim 1 of the present invention,
A vehicle body side mounting member attached to the vehicle body side and a power unit side mounting member attached to the power unit side, and connecting the vehicle body side mounting member and the power unit side mounting member via a vibration isolating member,
While the vehicle is moving forward, the vehicle body side mounting member has a forward contacted portion that stops the forward displacement of the power unit by contacting the stopper portion of the power unit side mounting member.
When the vehicle moves backward, the vehicle body mounting member includes a reverse contact portion that stops the displacement of the power unit when the stopper of the power unit mounting member comes into contact.
In the stop state of the power unit, the interval between the stopper portion and the forward contacted portion is set larger than the interval between the stopper portion and the reverse contact portion, and the forward side of the stopper portion The anti-vibration rubber part for advancing is provided on the side facing the abutted part or on the advancing side abutted part side, and the side of the stopper part facing the abutting part on the reverse side or the reverse side covering A reverse vibration isolating rubber part is provided on the abutting part side, and a rubber thickness of the forward anti-vibration rubber part is set to be larger than a rubber thickness of the reverse anti-vibration rubber part; The distance between the forward contacted part and the distance between the backward vibration isolating rubber part and the reverse contact rubber part are set to be substantially the same, or the forward vibration isolating rubber part The distance between the stopper portion, the reverse vibration isolating rubber portion and the stopper portion Away, characterized in that is configured substantially the same.

〔作用及び効果〕
本発明においては、例えば図３及び図４に示すように、パワーユニットＰの停止状態におけるストッパー部１１ａと前進側被当接部１０ａとの間隔Ｘ１が、ストッパー部１１ａと後進側被当接部１０ｂとの間隔Ｘ２よりも大きく設定されている。 [Action and effect]
In the present invention, as shown in FIGS. 3 and 4, for example, the distance X1 between the stopper portion 11a and the forward contact portion 10a when the power unit P is stopped is equal to the stopper portion 11a and the reverse contact portion 10b. Is set larger than the interval X2.

これにより、パワーユニットＰの停止状態におけるストッパー部１１ａと前進側被当接部１０ａとの間隔Ｘ１が、ストッパー部１１ａと後進側被当接部１０ｂとの間隔Ｘ２と略同じ程度に設定されている従来のパワーユニット支持構造と比べて、パワーユニットＰの変位が大きい前進発進時においてストッパー部１１ａと前進側被当接部１０ａが当接し難く、そのため振動も発生し難い。   Thereby, the interval X1 between the stopper portion 11a and the forward contacted portion 10a in the stop state of the power unit P is set to be approximately the same as the interval X2 between the stopper portion 11a and the backward contacted portion 10b. Compared to the conventional power unit support structure, the stopper unit 11a and the advancing-side contacted part 10a are less likely to abut at the time of forward start when the displacement of the power unit P is large, and therefore vibrations are also less likely to occur.

尚、ストッパー部１１ａと後進側被当接部１０ｂとの間隔Ｘ２を小さくしても、後進発進時のパワーユニットＰの変位は小さいので当接し難く、支障はない。即ち、本発明においては、ストッパー部１１ａと前進側被当接部１０ａとの間隔Ｘ１を大きく設定した分、ストッパー部１１ａと後進側被当接部１０ｂとの間隔Ｘ２を小さく設定したため、車体側取付部材１０は全体として大きくならない。   Even if the distance X2 between the stopper portion 11a and the reverse side contacted portion 10b is made small, the displacement of the power unit P at the time of reverse starting is small, so that it is difficult to make contact and there is no problem. That is, in the present invention, since the interval X1 between the stopper portion 11a and the forward-side contacted portion 10b is set to be small, the distance X2 between the stopper portion 11a and the backward-side contacted portion 10b is set to be small. The attachment member 10 does not become large as a whole.

従って、車体側取付部材１０を大きくできないレイアウト上の制約のある車両において、本発明は有効であり、レイアウトの面で無理な構造を採用する必要がなく、前進発進時における振動の発生を防止することができる。   Therefore, the present invention is effective in a vehicle with a layout restriction that cannot make the vehicle body side mounting member 10 large, and it is not necessary to employ an unreasonable structure in terms of layout, and the occurrence of vibration during forward start is prevented. be able to.

また、本発明においては、例えば図３及び図４に示すように、ストッパー部１１ａの周縁部が防振ゴム１３によって被覆されており、ストッパー部１１ａの前進側被当接部１０ａに対向する側に前進用防振ゴム部１３ａを備えると共に、ストッパー部１１ａの後進側被当接部１０ｂに対向する側に後進用防振ゴム部１３ｂを備え、前進用防振ゴム部１３ａのゴム厚Ｙ１が、後進用防振ゴム部１３ｂのゴム厚Ｙ２よりも厚く設定される。In the present invention, for example, as shown in FIGS. 3 and 4, the peripheral portion of the stopper portion 11 a is covered with the anti-vibration rubber 13, and the side of the stopper portion 11 a that faces the forward contacted portion 10 a. Is provided with a forward anti-vibration rubber portion 13a, a reverse anti-vibration rubber portion 13b is provided on the side facing the reverse-side contacted portion 10b of the stopper portion 11a, and the rubber thickness Y1 of the forward anti-vibration rubber portion 13a is The reverse rubber vibration isolator 13b is set thicker than the rubber thickness Y2.
そのため、前進発進時にストッパー部１１ａが前進側被当接部１０ａに当接しようとするときの衝撃力が、厚みの大きな前進用防振ゴム部１３ａによって効果的に吸収されることとなり、前進発進時における振動の発生をより確実に防止することができる。Therefore, the impact force when the stopper portion 11a tries to come into contact with the forward-side contacted portion 10a at the time of forward start is effectively absorbed by the thick forward vibration isolating rubber portion 13a, and the forward start is started. The occurrence of vibration at the time can be more reliably prevented.

本発明のうち請求項２に記載の発明では、In the invention according to claim 2 of the present invention,
前記前進用防振ゴム部と前記後進用防振ゴム部とは、略円盤状のゴム部に形成され、The forward vibration isolating rubber part and the backward vibration isolating rubber part are formed in a substantially disc-shaped rubber part,
前記パワーユニット側取付部材と、前記ゴム部と、は前記防振部材によって下方から支持されていることを特徴とする。The power unit side mounting member and the rubber part are supported from below by the vibration isolating member.

以下に本発明の実施の形態を図面に基づいて説明する。
〔実施形態〕
本発明の車両のパワーユニット支持構造について、図１乃至図４に基づいて説明する。尚、各図に適宜記す矢印ＦＲ、矢印ＵＰ、矢印Ｗは、それぞれ車両の前方向、上方向、幅方向（左右方向）を示す。 Embodiments of the present invention will be described below with reference to the drawings.
Embodiment
A power unit support structure for a vehicle according to the present invention will be described with reference to FIGS. In addition, the arrow FR, arrow UP, and arrow W which are suitably described in each figure show the front direction, the upward direction, and the width direction (left-right direction) of the vehicle, respectively.

図１及び図２は、ＦＦ型式の乗用車に搭載される横置きのパワーユニットＰ付近を示している。
図１及び図２に示されるように、パワーユニットＰは、車体の左右中央から少し右側（図１の紙面左方）にエンジン１が配置され、エンジン１の左側部（図１の紙面右方）にトルクコンバータ２及びミッションケース３が連結されて構成されている。
右のサイドメンバ４にエンジン１の右側部が右マウント５を介して支持され、左のサイドメンバ６にミッションケース３の左側部が左マウント７を介して支持されており、エンジン１（トルクコンバータ２）の下部とフロントサスペンションメンバー８とに亘ってトルクロッド９が接続されている。 1 and 2 show the vicinity of a horizontal power unit P mounted on an FF type passenger car.
As shown in FIGS. 1 and 2, in the power unit P, the engine 1 is arranged slightly to the right (left side of FIG. 1) from the left and right center of the vehicle body, and the left side of the engine 1 (right side of FIG. 1). The torque converter 2 and the transmission case 3 are connected to each other.
The right side member 4 supports the right side of the engine 1 via a right mount 5, and the left side member 6 supports the left side of the transmission case 3 via a left mount 7. A torque rod 9 is connected across the lower part of 2) and the front suspension member 8.

図２に示すように、パワーユニットＰは、エンジン１のクランクシャフト（図示せず）にピストン（図示せず）のトルクが掛かると、パワーユニットＰを通る車体左右方向のトルクロール軸Ａ１周りに、クランクシャフトが回る方向と反対方向に振動（回転）しようとする。   As shown in FIG. 2, when the torque of a piston (not shown) is applied to the crankshaft (not shown) of the engine 1, the power unit P is cranked around the torque roll axis A1 in the lateral direction of the vehicle body passing through the power unit P. Attempts to vibrate (rotate) in the direction opposite to the direction in which the shaft rotates.

本実施形態において、トルクロール軸Ａ１は、エンジン１のクランクシャフトに対して傾斜しており、平面視でトルクロール軸Ａ１のエンジン１側が少し車体前側（図２の紙面上方）に位置し、トルクロール軸Ａ１のミッションケース３側が少し車体後側（図２の紙面下方）に位置している。   In the present embodiment, the torque roll shaft A1 is inclined with respect to the crankshaft of the engine 1, and the engine 1 side of the torque roll shaft A1 is positioned slightly on the vehicle body front side (above the plane of FIG. 2) in plan view. The mission case 3 side of the roll axis A1 is located slightly on the rear side of the vehicle body (downward in the drawing of FIG. 2).

次に、本発明の車両のパワーユニット支持構造に係る右マウント５について説明する。
図３は、右マウント５の縦断面図を示しており、図４は図３の矢視線ＩＶ−ＩＶにおける横断面図を示す。 Next, the right mount 5 according to the power unit support structure for a vehicle of the present invention will be described.
3 shows a longitudinal sectional view of the right mount 5, and FIG. 4 shows a transverse sectional view taken along the line IV-IV in FIG.

右マウント５は、車体側に取り付けられる円筒状の車体側取付部材１０と、パワーユニットＰ側に取り付けられるパワーユニット側取付部材１１と、両取付部材１０，１１の間に介在されたゴム状弾性体からなる防振部材１２とを備えており、鋼製の車体側取付部材１０の内側に、この車体側取付部材１０の内壁と所定の間隔をおいて鋼製のパワーユニット側取付部材１１が配置されている。   The right mount 5 includes a cylindrical vehicle body side mounting member 10 attached to the vehicle body side, a power unit side mounting member 11 attached to the power unit P side, and a rubber-like elastic body interposed between the mounting members 10 and 11. The steel power unit side mounting member 11 is disposed inside the steel body side mounting member 10 at a predetermined distance from the inner wall of the body side mounting member 10. Yes.

パワーユニット側取付部材１１は、略円柱状とされ、その上下方向の中央部付近には、車体側取付部材１０の内周面と軸直角方向に対向するように、略楕円状のストッパー部１１ａが軸直角方向に突設されている。   The power unit side mounting member 11 has a substantially cylindrical shape, and a substantially elliptical stopper portion 11a is provided in the vicinity of the center in the vertical direction so as to face the inner peripheral surface of the vehicle body side mounting member 10 in the direction perpendicular to the axis. Projecting in the direction perpendicular to the axis.

車体側取付部材１０は、車両の前進時において、ストッパー部１１ａが当接することによりパワーユニットＰの前進側の変位を止める前進側被当接部１０ａと、車両の後進時において、ストッパー部１１ａが当接することによりパワーユニットＰの後進側の変位を止める後進側被当接部１０ｂとを備える。尚、本実施形態における前進側被当接部１０ａ及び後進側被当接部１０ｂのそれぞれは、車体側取付部材１０の軸心Ａ２においてトルクロール軸Ａ１と直交する方向で対向する位置に設けられている。   The vehicle body side mounting member 10 has a forward contacted portion 10a that stops the forward displacement of the power unit P when the stopper portion 11a abuts when the vehicle advances, and a stopper portion 11a when the vehicle moves backward. A reverse-side contacted portion 10b that stops the reverse-side displacement of the power unit P by contacting the power unit P is provided. Each of the forward contact portion 10a and the reverse contact portion 10b in the present embodiment is provided at a position facing the torque center A2 of the vehicle body side mounting member 10 in a direction orthogonal to the torque roll axis A1. ing.

図４に示すように、パワーユニット側取付部材１１のストッパー部１１ａは、パワーユニットＰの停止状態において、ストッパー部１１ａと前進側被当接部１０ａとの間隔Ｘ１が、ストッパー部１１ａと後進側被当接部１０ｂとの間隔Ｘ２よりも大きくなるように（Ｘ１＞Ｘ２）、車体側取付部材１０の軸心Ａ２から偏心した位置に設定されている。   As shown in FIG. 4, when the power unit P is stopped, the stopper portion 11a of the power unit side mounting member 11 has an interval X1 between the stopper portion 11a and the advancing contact portion 10a. It is set at a position deviated from the axis A2 of the vehicle body side mounting member 10 so as to be larger than the interval X2 with the contact portion 10b (X1> X2).

図３及び図４に示すように、ストッパー部１１ａの周縁部は、防振ゴム１３によって被覆されており、ストッパー部１１ａの前進側被当接部１０ａに対向する側に前進用防振ゴム部１３ａを備えると共に、ストッパー部１１ａの後進側被当接部１０ｂに対向する側に後進用防振ゴム部１３ｂを備え、前進用防振ゴム部１３ａのゴム厚Ｙ１が、後進用防振ゴム部１３ｂのゴム厚Ｙ２よりも厚く設定されている（Ｙ１＞Ｙ２）。防振ゴム１３は、合成ゴム又は天然ゴムからなり、ストッパー部１１ａが車体側取付部材１０に当接しようとするときの衝撃力を吸収して、パワーユニットＰの駆動状態における振動を低減させる。   As shown in FIGS. 3 and 4, the peripheral portion of the stopper portion 11a is covered with a vibration isolating rubber 13, and the vibration isolating rubber portion for advancement is provided on the side of the stopper portion 11a facing the advancing side contacted portion 10a. 13a, a reverse vibration isolating rubber portion 13b is provided on the side facing the reverse abutting portion 10b of the stopper portion 11a, and the rubber thickness Y1 of the forward anti vibration rubber portion 13a is determined so that the reverse vibration isolating rubber portion It is set to be thicker than the rubber thickness Y2 of 13b (Y1> Y2). The anti-vibration rubber 13 is made of synthetic rubber or natural rubber, and absorbs an impact force when the stopper portion 11a attempts to contact the vehicle body side mounting member 10 to reduce vibration in the driving state of the power unit P.

尚、本実施形態においては、防振ゴム１３の前進用防振ゴム部１３ａ及び後進用防振ゴム部１３ｂのそれぞれに凹凸部分が設けられており、前進用防振ゴム部１３ａの凹凸部分と前進側被当接部１０ａとのクリアランスＺ１と、後進用防振ゴム部１３ｂの凹凸部分と後進側被当接部１０ｂとのクリアランスＺ２とが略同じ距離に設定されている（Ｚ１≒Ｚ２）。   In the present embodiment, each of the forward vibration isolating rubber portion 13a and the backward vibration isolating rubber portion 13b of the anti-vibration rubber 13 is provided with an uneven portion, The clearance Z1 with the forward-side contacted portion 10a and the clearance Z2 between the concave and convex portion of the backward-vibration-proof rubber portion 13b and the reverse-side contacted portion 10b are set at substantially the same distance (Z1≈Z2). .

上記構成によれば、パワーユニットの停止状態におけるストッパー部１１ａと前進側被当接部１０ａとの間隔Ｘ１が、ストッパー部１１ａと後進側被当接部１０ｂとの間隔Ｘ２と略同じ程度に設定されている従来のパワーユニット支持構造と比べて、パワーユニットＰの変位が大きい前進発進時においてストッパー部１１ａと前進側被当接部１０ａが当接し難く、そのため振動も発生し難い。   According to the above configuration, the interval X1 between the stopper portion 11a and the forward-side contacted portion 10a when the power unit is stopped is set to be approximately the same as the interval X2 between the stopper portion 11a and the reverse-side contacted portion 10b. Compared to the conventional power unit support structure, the stopper unit 11a and the advancing-side contacted part 10a are less likely to abut at the time of forward start when the displacement of the power unit P is large, and therefore vibrations are also unlikely to occur.

その上、前進発進時にストッパー部１１ａが前進側被当接部１０ａに当接しようとするときの衝撃力が、厚みの大きな前進用防振ゴム部１３ａによって効果的に吸収されることとなり、前進発進時における振動の発生をより確実に防止することができる。   In addition, the impact force when the stopper portion 11a tries to come into contact with the forward contacted portion 10a during forward start is effectively absorbed by the thick forward vibration isolating rubber portion 13a. Generation of vibrations at the time of starting can be more reliably prevented.

尚、ストッパー部１１ａと後進側被当接部１０ｂとの間隔Ｘ２を小さくしても、後進発進時のパワーユニットＰの変位は小さいので当接し難く、支障はない。即ち、上記構成においては、ストッパー部１１ａと前進側被当接部１０ａとの間隔Ｘ１を大きく設定した分、ストッパー部１１ａと後進側被当接部１０ｂとの間隔Ｘ２を小さく設定したため、車体側取付部材１０は全体として大きくならない。従って、車体側取付部材１０を大きくできないレイアウト上の制約のある車両において、本発明は有効であり、レイアウトの面で無理な構造を採用する必要がなく、前進発進時における振動の発生を防止することができる。   Even if the distance X2 between the stopper portion 11a and the reverse side contacted portion 10b is made small, the displacement of the power unit P at the time of reverse starting is small, so that it is difficult to make contact and there is no problem. That is, in the above configuration, since the interval X2 between the stopper portion 11a and the backward contacted portion 10b is set to be small as much as the interval X1 between the stopper portion 11a and the forward contacted portion 10a is set large, The attachment member 10 does not become large as a whole. Therefore, the present invention is effective in a vehicle with a layout restriction that cannot make the vehicle body side mounting member 10 large, and it is not necessary to employ an unreasonable structure in terms of layout, and the occurrence of vibration during forward start is prevented. be able to.

また、本実施形態においては、ストッパー部１１ａを、特に従来よりも小さな径を有するものに変更する必要はない。そのため、ストッパー部１１ａが車体取付部材１０の上部壁と当接することによってパワーユニットＰの上下方向の変位を抑える、ストッパー部１１ａのリバウンドストッパ機能が確保される。   Moreover, in this embodiment, it is not necessary to change the stopper part 11a to what has a diameter smaller than before especially. Therefore, a rebound stopper function of the stopper portion 11a that suppresses the vertical displacement of the power unit P by the stopper portion 11a coming into contact with the upper wall of the vehicle body mounting member 10 is ensured.

〔別実施形態〕
〔１〕図５に示されるように、前述の実施形態における前進用防振ゴム部１３ａと前進側被当接部１０ａとのクリアランスＺ１を、後進用防振ゴム部１３ｂと後進側被当接部１０ｂとのクリアランスＺ２よりも大きく設定するようにしても良い（Ｚ１＞Ｚ２）。本実施形態によれば、ストッパー部１１ａと前進側被当接部１０ａが当接し難くなるため振動の発生をより一層防止できる。
〔２〕前述の実施形態における防振ゴム１３は、ストッパー部１１ａの全周囲に設ける必要はなく、防振ゴム１３を、前進用防振ゴム部１３ａと後進用防振ゴム部１３ｂ以外の部分には設けない構成としても良い。
また、ストッパー部１１ａの前進側被当接部１０ａに対向する側、又は前進側被当接部側１０ａに前進用防振ゴム部１３ａを備えると共に、ストッパー部１１ａの後進側被当接部１０ｂに対向する側、又は後進側被当接部側１０ｂに後進用防振ゴム部１３ｂを備える構成としても良い。
この場合、例えば、前進用防振ゴム部１３ａ及び後進用防振ゴム部１３ｂのそれぞれを、車体側取付部材１０の前進側被当接部１０ａ及び後進側被当接部１０ｂに設ける構成としたり、あるいは、前進用防振ゴム部１３ａをストッパー部１１ａの前進側被当接部１０ａに対向する側に設けると共に、後進用防振ゴム部１３ｂを後進側被当接部１０ｂに設ける構成としたり、またあるいは、前進用防振ゴム部１３ａを前進側被当接部１０ａに設けると共に、後進用防振ゴム部１３ｂをストッパー部１１ａの後進側被当接部１０ｂに対向する側に設ける構成としても良い。
〔３〕前述の実施形態に示されるようなパワーユニット側取付部材１１のストッパー部１１ａを偏心させる構成ではなく、ストッパー部１１ａを車両前後方向に非対称形状に構成し、その短径側を前進側被当接部１０ａ側に設定し、長径側を後進側被当接部１０ｂ側に設定するようにしても良い。
〔４〕前述の実施形態におけるストッパー部１１ａを円形状に設定すると共に、車体側取付部材１０の横断面を楕円形状に設定して前進側被当接部１０ａと後進側被当接部１０ｂを設ける構成としても良い。
〔５〕前述の実施形態に示される右マウント５の構成を左マウント７に適用しても良い。 [Another embodiment]
[1] As shown in FIG. 5, the clearance Z1 between the forward vibration isolating rubber portion 13a and the forward advancing contacted portion 10a in the above-described embodiment is defined as the reverse vibration isolating rubber portion 13b and the reverse moving abutting portion. You may make it set larger than the clearance Z2 with the part 10b (Z1> Z2). According to this embodiment, since it becomes difficult for the stopper part 11a and the advancing side contact part 10a to contact | abut, generation | occurrence | production of a vibration can be prevented further.
[2] The anti-vibration rubber 13 in the above-described embodiment does not need to be provided all around the stopper portion 11a, and the anti-vibration rubber 13 is a portion other than the forward anti-vibration rubber portion 13a and the reverse anti-vibration rubber portion 13b. It is good also as a structure which is not provided in.
The stopper 11a is provided with a forward anti-vibration rubber portion 13a on the side facing the forward contact portion 10a or the forward contact portion 10a, and the reverse contact portion 10b of the stopper portion 11a. It is good also as a structure provided with the anti-vibration rubber | gum part 13b for a reverse drive in the side which opposes, or the reverse side contact part 10b.
In this case, for example, each of the forward vibration isolating rubber portion 13a and the reverse vibration isolating rubber portion 13b is provided on the forward contact portion 10a and the reverse contact portion 10b of the vehicle body side mounting member 10. Alternatively, the forward vibration isolating rubber portion 13a is provided on the side of the stopper portion 11a facing the forward abutted portion 10a, and the backward vibration isolating rubber portion 13b is provided on the reverse abutting portion 10b. Alternatively, the forward vibration isolating rubber portion 13a is provided on the forward abutted portion 10a, and the backward vibration isolating rubber portion 13b is provided on the side facing the reverse abutting portion 10b of the stopper portion 11a. Also good.
[3] Rather than the configuration in which the stopper portion 11a of the power unit side mounting member 11 is eccentric as shown in the above-described embodiment, the stopper portion 11a is formed in an asymmetric shape in the vehicle front-rear direction, and the short diameter side is the forward side cover. It may be set on the abutting portion 10a side, and the long diameter side may be set on the reverse side abutting portion 10b side.
[4] The stopper portion 11a in the above-described embodiment is set in a circular shape, and the cross section of the vehicle body side mounting member 10 is set in an elliptical shape so that the forward contact portion 10a and the reverse contact portion 10b are It is good also as a structure to provide.
[5] The configuration of the right mount 5 shown in the above embodiment may be applied to the left mount 7.

パワーユニット付近の正面図Front view near the power unit パワーユニット付近の平面図Plan view near the power unit 右マウントの縦断面図Vertical section of right mount 図３の矢視線ＩＶ−ＩＶにおける横断面図Cross-sectional view taken along line IV-IV in FIG. 本発明の別実施形態に係る右マウントの横断面図Cross-sectional view of a right mount according to another embodiment of the present invention

符号の説明Explanation of symbols

１ エンジン
２ トルクコンバータ
３ ミッションケース
４ 右サイドメンバ
５ 右マウント
６ 左サイドメンバ
７ 左マウント
８ フロントサスペンションメンバー
９ トルクロッド
１０ 車体側取付部材
１０ａ 前進側被当接部
１０ｂ 後進側被当接部
１１ パワーユニット側取付部材
１１ａ ストッパー部
１２ 防振部材
１３ 防振ゴム DESCRIPTION OF SYMBOLS 1 Engine 2 Torque converter 3 Mission case 4 Right side member 5 Right mount 6 Left side member 7 Left mount 8 Front suspension member 9 Torque rod 10 Car body side attachment member 10a Forward side contact part 10b Reverse side contact part 11 Power unit Side mounting member 11a Stopper portion 12 Anti-vibration member 13 Anti-vibration rubber

Claims (2)

車体側に取り付けられる車体側取付部材と、パワーユニット側に取り付けられるパワーユニット側取付部材とを備え、前記車体側取付部材と前記パワーユニット側取付部材とを防振部材を介して連結して、
車両の前進時において、前記パワーユニット側取付部材のストッパー部が当接することによりパワーユニットの前進側の変位を止める前進側被当接部を、前記車体側取付部材に備えると共に、
車両の後進時において、前記パワーユニット側取付部材のストッパー部が当接することによりパワーユニットの後進側の変位を止める後進側被当接部を、前記車体取付部材に備え、
前記パワーユニットの停止状態において、前記ストッパー部と前記前進側被当接部との間隔が、前記ストッパー部と前記後進側被当接部との間隔よりも大きく設定され、
前記ストッパー部の前記前進側被当接部に対向する側、又は前記前進側被当接部側に前進用防振ゴム部を備えると共に、前記ストッパー部の前記後進側被当接部に対向する側、又は前記後進側被当接部側に後進用防振ゴム部を備え、前記前進用防振ゴム部のゴム厚が、前記後進用防振ゴム部のゴム厚よりも厚く設定され、
前記前進用防振ゴム部と前記前進側被当接部との距離と、前記後進用防振ゴム部と前記後進用被当接部との距離が略同じに設定されている、又は、前記前進用防振ゴム部と前記ストッパー部との距離と、前記後進用防振ゴム部と前記ストッパー部との距離が略同じに設定されている車両のパワーユニット支持構造。 A vehicle body side mounting member attached to the vehicle body side and a power unit side mounting member attached to the power unit side, and connecting the vehicle body side mounting member and the power unit side mounting member via a vibration isolating member,
While the vehicle is moving forward, the vehicle body side mounting member has a forward contacted portion that stops the forward displacement of the power unit by contacting the stopper portion of the power unit side mounting member.
When the vehicle moves backward, the vehicle body mounting member includes a reverse contact portion that stops the displacement of the power unit when the stopper of the power unit mounting member comes into contact.
In the stop state of the power unit, the interval between the stopper portion and the forward contact portion is set larger than the interval between the stopper portion and the reverse contact portion ,
The stopper is provided with a forward anti-vibration rubber part on the side facing the forward contacted part of the stopper or on the forward contacted part, and opposed to the backward contacted part of the stopper part. A reverse vibration isolating rubber part on the side or the reverse side contacted part side, the rubber thickness of the forward vibration isolating rubber part is set to be thicker than the rubber thickness of the reverse vibration isolating rubber part,
The distance between the forward vibration isolating rubber part and the forward abutting part and the distance between the backward vibration isolating rubber part and the reverse abutting part are set substantially the same, or A power unit support structure for a vehicle , wherein a distance between a forward vibration isolating rubber part and the stopper part and a distance between the reverse vibration isolating rubber part and the stopper part are set to be substantially the same . 前記前進用防振ゴム部と前記後進用防振ゴム部とは、略円盤状のゴム部に形成され、
前記パワーユニット側取付部材と、前記ゴム部と、は前記防振部材によって下方から支持されている請求項１に記載の車両のパワーユニット支持構造。 The forward vibration isolating rubber part and the backward vibration isolating rubber part are formed in a substantially disc-shaped rubber part,
The power unit support structure for a vehicle according to claim 1, wherein the power unit side mounting member and the rubber portion are supported from below by the vibration isolation member .
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JPS58175230U (en) * 1982-05-19 1983-11-24 日産自動車株式会社 Power unit mounting device
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