JP2004360803A

JP2004360803A - Elastic supporting device

Info

Publication number: JP2004360803A
Application number: JP2003160462A
Authority: JP
Inventors: Hiroyuki Yoshida; 裕之吉田
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2003-06-05
Filing date: 2003-06-05
Publication date: 2004-12-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elastic supporting device capable of holding a member to be mounted on an engine and a car body, within a specific allowable range even when its resin part is partially broken, while reducing its weight and cost. <P>SOLUTION: A rear differential mount device 11 comprises a metallic reinforcement plate 43 integrally buried in a mount main body 31, and having plate-side collars 44, 44 at least partially exposed to the outside, and an upper stopper 32 and a lower stopper 33 for restricting the axial movement of the mount main body 31 by holding rubber-side collars 47, 47 from axial both sides. The reinforcement plate 43 has an overlap part 58 axially overlapped with the lower stopper 33. The mount main body can be reinforced by the reinforcement plate, and when the mount main body is broken, the overlap part of the reinforcement plate is supported by the lower stopper to hold a final reduction gear within a specific axial allowable range. Further the reinforcement plate can be miniaturized only by mounting the overlap part even though the reinforcement plate is not mounted over the whole mount main body, whereby the rear differential mount device can be lightened and its cost can be reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、車両のパワープラントを弾性的に支持する弾性支持装置に関する。
【０００２】
【従来の技術】
弾性支持装置として、荷重を支持する部分に樹脂を用いたものが知られている（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開平７−１９７９２７号公報（第２−３頁、図１）
【０００４】
特許文献１の図１を以下の図７で説明する。なお、符号は振り直した。
図７は従来の弾性支持装置の正面図であり、弾性支持装置としての連結ロッド１００は、樹脂製のロッド状部分１０１と、このロッド状部分１０１の両端に一体成形した樹脂製の筒状部分１０２，１０２と、これらの筒状部分１０２，１０２のそれぞれの内側に取付けた弾性体１０３と、これらの弾性体１０３の更に内側にそれぞれ取付けた内筒１０４とからなり、自動車等のエンジンを車体側と連結する。
【０００５】
【発明が解決しようとする課題】
上記の連結ロッド１００はロッド状部分１０１及び筒状部分１０２が樹脂製であるため、これらのロッド状部分１０１及び筒状部分１０２は過大な負荷が作用した場合に破損してエンジンの位置を所定の許容範囲内に保持しておくことができなくなる場合がある。このような場合、過負荷に対応するために連結ロッド１００に補強材を追加したり、ロッド状部分１０１及び筒状部分１０２が破損してもエンジンを所定の許容範囲内に保持するために、連結ロッド１００とは別にエンジン保持部材を設けることが考えられる。しかし、上記した補強材、エンジン保持部材の追加は、大きな重量増となり、樹脂を採用したことによる連結ロッド１００の軽量化の効果が小さくなる。また、コストアップをも招く。
【０００６】
そこで、本発明の目的は、弾性支持装置を改良することで、軽量化及びコスト削減を図りながら、万一樹脂部分に破損が生じても、エンジンや車体等の被取付部材を所定の許容範囲内に保持することにある。
【０００７】
【課題を解決するための手段】
上記目的を達成するために請求項１は、被取付部材に取付けられる軸状の取付部材及びこの取付部材を囲むように取付部材に加硫接着したゴムからなる２つのゴム接着部材と、筒状とした両端部でゴム接着部材を囲み且つ連結する射出成形した樹脂成形体と、を備える弾性支持装置において、この弾性支持装置に、樹脂成形体に一体的に埋設するとともに少なくとも一部を外部に露出させた露出部を有する金属製の補強部材と、取付部材をそれぞれ軸方向両側から挟み込むことで樹脂成形体の軸方向移動量を規制する規制部材とを備え、補強部材に、規制部材と軸方向に重なるオーバーラップ部を備えることを特徴とする。
【０００８】
補強部材によって樹脂成形体を補強するとともに、樹脂成形体が破損したときに補強部材のオーバーラップ部を規制部材で支持することによって被取付部材を軸方向の所定の許容範囲内に保持することができる。
また、補強部材を、樹脂成形体全体に設けなくてもオーバーラップ部を設ければ、補強部材を小型にすることができる。
【０００９】
従って、補強部材を樹脂成形体全体に設けたり、被取付部材を許容範囲内に保持しておく別体の保持部材を特別に設けるのに比べて、弾性支持装置の軽量化を図ることができ、また、コスト削減をも図ることができる。
【００１０】
請求項２は、被取付部材に取付けられる軸状の取付部材及びこの取付部材を囲むように取付部材に加硫接着したゴムからなる２つのゴム接着部材と、筒状とした両端部でゴム接着部材を囲み且つ連結する射出成形した樹脂成形体と、を備える弾性支持装置において、この弾性支持装置に、樹脂成形体に一体的に埋設するとともに少なくとも一部を外部に露出させた露出部を有する金属製の補強部材と、取付部材をそれぞれ軸方向両側から挟み込むことで樹脂成形体の軸方向移動量を規制する規制部材とを備え、補強部材に、取付部材と軸直角方向に重なるオーバーラップ部を備えることを特徴とする。
【００１１】
補強部材によって樹脂成形体を補強するとともに、樹脂成形体が破損したときに補強部材のオーバーラップ部を取付部材で支持することによって取付部材を軸直角方向の許容範囲内に保持することができる。
【００１２】
【発明の実施の形態】
本発明の実施の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。
図１は本発明に係る弾性支持装置の取付け状態を示す斜視図（図中の矢印（ｆｒｏｎｔ）は車体前方を表す。以下同じ。）であり、車体の下部に取付ける被取付部材としてのサブフレーム１０の前部中央に弾性支持装置としてのリヤデフマウント装置１１を介して終減速装置１２を取付け、終減速装置１２をリヤデフマウント装置１１で弾性的に支持したことを示す。尚、終減速装置１２は、図示しない他の１点、即ち、終減速装置１２の後端部に設けられる別のリヤデフマウント装置を含め弾性的に３点支持される。
【００１３】
ここで、２１…（…は複数個を表す。以下同じ。）はサブフレーム１０を車体側に取付けるための取付ボルト、２２はリヤデフマウント装置１１を取付けるためにサブフレーム１０に設けた門形フレーム、２３，２４はサスペンションアームを支持するためにサブフレーム１０に設けたアーム支持部、２６は変速機（不図示）と終減速装置１２とを連結するプロペラシャフト、２７はプロペラシャフト２６と終減速装置１２とを連結する十字ジョイントである。
【００１４】
図２（ａ），（ｂ）は本発明に係るリヤマウント装置を示す説明図であり、（ａ）は斜視図、（ｂ）は（ａ）のｂ−ｂ線断面図である。
（ａ）において、リヤデフマウント装置１１は、中央部を高くし両端部を低く形成した樹脂成形体としてのマウント本体３１と、このマウント本体３１の両端部をそれぞれ上下に挟み込む規制部材としてのアッパストッパ３２及び規制部材としてのロアストッパ３３と、リヤデフマウント装置１１をサブフレーム１０（図１参照）に取付けるための第１ボルト３４，３４と、リヤデフマウント装置１１を終減速装置１２に取付けるための第２ボルト３６，３６とからなり、マウント本体３１の主な部分を樹脂材料で成形したものである。
【００１５】
（ｂ）において、リヤデフマウント装置１１のマウント本体３１は、両端部に筒部３８，３８を一体成形した樹脂製のビーム材４２と、このビーム材４２を補強するためにビーム材４２の筒部３８，３８間に埋め込んだ金属製の補強部材としての補強プレート４３と、第２ボルト３６，３６を通すために補強プレート４３に取付けたプレート側カラー４４，４４と、筒部３８の内側に加硫接着した緩衝用のゴム４６と、このゴム４６の内側に接着した取付部材としての円筒状のゴム側カラー４７とからなり、予めゴム側カラー４７にゴム４６を加硫接着してゴム接着部材４８を形成し、２つのゴム接着部材４８，４８と補強プレート４３とを射出成形型内に固定し、この射出成形型内に樹脂を射出することで形成したものである。なお、４４ａは終減速装置１２（図１参照）を固定するためにプレート側カラー４４に設けた下面、５３…はビーム材４２の穴部であり、この穴部５３…は射出成形型内に補強プレート４３を位置決めする位置決め部材を除いたあとに出来る。５４はビーム材４２の中央部に設けた窓部である。
【００１６】
補強プレート４３には、ビーム材４２との結合力を高めるために射出成形時に樹脂を充填する貫通穴５６…が設けられている。
プレート側カラー４４は、補強プレート４３に溶接、加締め等で取付け、終減速装置１２（図１参照）を第２ボルト３６，３６で取付けるために上面と下面とを外部に露出させている。
【００１７】
アッパストッパ３２及びロアストッパ３３は、ビーム材４２が上下に大きく変位したときにその変位を規制する部材であり、ゴム側カラー４７の両端部に当て且つゴム側カラー４７に通した第１ボルト３４を貫通させることで径方向に位置決めしたものである。
【００１８】
上記した補強プレート４３は、その両端部がロアストッパ３３の上方、即ち軸方向に重なるように延ばされており、その重なり部分、即ちオーバラップ部５８，５８のオーバラップ量（重なり量）はＬである。
【００１９】
図３は本発明に係るリヤマウント装置の平面図であり、リヤデフマウント装置１１の補強プレート４３をロアストッパ３３の外周縁６３，６３よりも外側（ロアストッパ３３の内周側）まで延ばしてオーバラップ部５８，５８（ハッチングを施した部分）を形成したことを示す。なお、６５はビーム材４２の窓部５４を避けるように補強プレート４３に設けた切欠き部である。
【００２０】
図４は本発明に係るサブフレームへの終減速装置の取付け状態を示す分解斜視図であり、リヤデフマウント装置１１を第２ボルト３６，３６で終減速装置１２の上部に設けた車体側取付け部６７に取付け、終減速装置１２を取付けた状態のリヤデフマウント装置１１のゴム側カラー４７のそれぞれの上下にアッパストッパ３２及びロアストッパ３３を当てて、これらのロアストッパ３３、ゴム側カラー４７、アッパストッパ３２に順に第１ボルト３４を通すことで、リヤデフマウント装置１１を第１ボルト３４，３４でサブフレーム１０の門形フレーム２２に取付けることを示す。
【００２１】
以上に述べたリヤデフマウント装置１１の作用を次に説明する。
図５は本発明に係るリヤマウント装置の作用を示す作用図である。
サブフレーム１０にリヤデフマウント装置１１を介して終減速装置１２を取付けた状態で、例えば、終減速装置１２に下向きの過大な荷重が作用して、リヤデフマウント装置１１におけるビーム部４２の筒部３８，３８に近い部分が破損すると、破損部７１，７２から分離したリヤデフマウント装置１１の分離部７３は、終減速装置１２と共に白抜き矢印で示すように下降する。
【００２２】
しかし、分離部７３から突出した補強プレート４３のオーバラップ部５８，５８をロアストッパ３３，３３の縁部上面に当てることで終減速装置１２の更なる下降を規制する、即ち終減速装置１２を下降の許容範囲内に保持することができる。
【００２３】
以上の図１及び図２（ａ），（ｂ）で説明したように、補強プレート４３によってビーム材４２を補強するとともに、ビーム材４２が破損したときに補強プレート４３のオーバーラップ部５８をロアストッパ３３で支持することによって補強プレート４３、ひいては終減速装置１２を軸方向の許容範囲内に保持することができる。
また、補強プレート４３を、ビーム材４２全体に設けなくてもオーバーラップ部５８を設ければ、補強プレート４３を小型にすることができる。
【００２４】
従って、補強部材を樹脂成形体全体に設けたり、補強部材を許容範囲内に保持しておく保持部材を特別に設けるのに比べて、本発明ではリヤデフマウント装置１１の軽量化を図ることができ、また、コスト削減をも図ることができる。
【００２５】
図６は本発明に係るリヤマウント装置の別の実施の形態を示す平面図である。なお、図３に示した実施の形態と同一構成については同一符号を付け、詳細説明は省略する。
リヤマウント装置８１は、補強プレート８２の両端部に、補強プレート８２の長手方向外方に突出する前突出部８４，８４及び後突出部８５，８５を形成した部材である。
【００２６】
前突出部８４（拡大図も参照）及び後突出部８５は、ロアストッパ８３の前部及び後部の各上方（即ち、ゴム側カラー４７の軸方向である。）に重ねた前オーバラップ部８７（ハッチングを施した部分）及び後オーバラップ部８８（ハッチングを施した部分）を形成したものであり、ロアストッパ８３と前オーバラップ部８７及び後オーバラップ部８８とによって、ビーム材４２が破損しても終減速装置を上下方向の許容範囲内に保持しておくことができる。
【００２７】
また、前突出部８４（拡大図も参照）及び後突出部８５は、ゴム側カラー４７，４７の各前後方向（即ち、ゴム側カラー４７の軸直角方向である。）に重ねた第１オーバラップ部９１（ハッチングを施した部分）及び第２オーバラップ部９２（ハッチングを施した部分である。なお、９４はゴム側カラー４７に接するとともに前後方向に延ばした直線である。）を形成したものであり、ゴム側カラー４７，４７と第１オーバラップ部９１及び第２オーバラップ部９２とによって、リヤデフマウント装置８１の前後方向の移動量を、ビーム材４２が破損したときに終減速装置を所定の許容範囲内に保持しておくことができる。
【００２８】
尚、本発明の実施の形態では、図２（ｂ）において、プレート側カラー４４を外部に露出させたが、これに限らず、プレート側カラー４４を設けずに、補強プレート４３の上面及び下面を外部に露出させたり、補強プレート４３の上面に上方へ突出する突出部を形成し、補強プレート４３の下面に下方へ突出する突出部を形成し、これらの突出部を外部に露出させてもよい。
更に、アッパストッパ３２に代えて、サブフレーム１０の門形フレーム２２の下面にストッパ部を形成するようにしてもよい。
【００２９】
【発明の効果】
本発明は上記構成により次の効果を発揮する。
請求項１の弾性支持装置は、樹脂成形体に一体的に埋設するとともに少なくとも一部を外部に露出させた露出部を有する金属製の補強部材と、取付部材をそれぞれ軸方向両側から挟み込むことで樹脂成形体の軸方向移動量を規制する規制部材とを備え、補強部材に、規制部材と軸方向に重なるオーバーラップ部を備えるので、補強部材によって樹脂成形体を補強するとともに、樹脂成形体が破損したときに補強部材のオーバーラップ部を規制部材で支持することによって被取付部材を軸方向の所定の許容範囲内に保持することができる。
また、補強部材を、樹脂成形体全体に設けなくてもオーバーラップ部を設ければ、補強部材を小型にすることができる。
【００３０】
従って、補強部材を樹脂成形体全体に設けたり、被取付部材を許容範囲内に保持しておく別体の保持部材を特別に設けるのに比べて、弾性支持装置の軽量化を図ることができ、また、コスト削減をも図ることができる。
【００３１】
請求項２の弾性支持装置は、樹脂成形体に一体的に埋設するとともに少なくとも一部を外部に露出させた露出部を有する金属製の補強部材と、取付部材をそれぞれ軸方向両側から挟み込むことで樹脂成形体の軸方向移動量を規制する規制部材とを備え、補強部材に、取付部材と軸直角方向に重なるオーバーラップ部を備えるので、補強部材によって樹脂成形体を補強するとともに、樹脂成形体が破損したときに補強部材のオーバーラップ部を取付部材で支持することによって取付部材を軸直角方向の許容範囲内に保持することができる。
【図面の簡単な説明】
【図１】本発明に係る弾性支持装置の取付け状態を示す斜視図
【図２】本発明に係るリヤマウント装置を示す説明図
【図３】本発明に係るリヤマウント装置の平面図
【図４】本発明に係るサブフレームへの終減速装置の取付け状態を示す分解斜視図
【図５】本発明に係るリヤマウント装置の作用を示す作用図
【図６】本発明に係るリヤマウント装置の別の実施の形態を示す平面図
【図７】従来の弾性支持装置の正面図
【符号の説明】
１０，１２…被取付部材（サブフレーム、終減速装置）、１１，８１…弾性支持装置（リヤデフマウント装置）、３１…樹脂成形体（マウント本体）、３２，３３，８３…規制部材（アッパストッパ、ロアストッパ、ロアストッパ）、４３，８２…補強部材（補強プレート）、４４…露出部（プレート側カラー）、４６…ゴム、４７…取付部材（ゴム側カラー）、４８…ゴム接着部材、５８，８７，８８，９１，９２…オーバラップ部。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an elastic support device for elastically supporting a power plant of a vehicle.
[0002]
[Prior art]
As an elastic support device, a device using a resin for a portion that supports a load is known (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-7-197927 (page 2-3, FIG. 1)
[0004]
FIG. 1 of Patent Document 1 will be described with reference to FIG. 7 below. The reference numerals have been re-assigned.
FIG. 7 is a front view of a conventional elastic support device. A connecting rod 100 as an elastic support device includes a resin rod-shaped portion 101 and a resin cylindrical portion integrally formed at both ends of the rod-shaped portion 101. 102, 102, an elastic body 103 attached inside each of these tubular portions 102, 102, and an inner cylinder 104 attached further inside these elastic bodies 103, respectively. Connect with the side.
[0005]
[Problems to be solved by the invention]
Since the connecting rod 100 has a rod-shaped part 101 and a cylindrical part 102 made of resin, the rod-shaped part 101 and the cylindrical part 102 are damaged when an excessive load is applied, and the position of the engine is determined. May not be able to be maintained within the allowable range. In such a case, in order to keep the engine within a predetermined allowable range even when the reinforcing member is added to the connecting rod 100 to cope with the overload or the rod-shaped portion 101 and the cylindrical portion 102 are damaged, It is conceivable to provide an engine holding member separately from the connecting rod 100. However, the addition of the reinforcing member and the engine holding member described above results in a large weight increase, and the effect of reducing the weight of the connecting rod 100 due to the use of the resin is reduced. In addition, the cost is increased.
[0006]
Therefore, an object of the present invention is to improve the elastic support device so as to reduce the weight and cost, and even if the resin portion is damaged, the mounted members such as the engine and the vehicle body can be moved within a predetermined allowable range. To keep it within.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention is a cylindrical mounting member attached to a member to be mounted, two rubber bonding members made of rubber vulcanized and bonded to the mounting member so as to surround the mounting member, and a cylindrical member. And an injection-molded resin molded body that surrounds and connects the rubber adhesive member at both ends, wherein the elastic support device is integrally embedded in the resin molded body and at least a part is externally mounted. A reinforcing member made of metal having an exposed portion that is exposed, and a regulating member that regulates an amount of movement of the resin molded body in the axial direction by sandwiching the mounting member from both sides in the axial direction. It is characterized by having an overlapping portion overlapping in the direction.
[0008]
The reinforcing member is used to reinforce the resin molded body, and when the resin molded body is damaged, the attached member is held within a predetermined allowable range in the axial direction by supporting the overlapping portion of the reinforcing member with the regulating member. it can.
In addition, even if the reinforcing member is not provided on the entire resin molded body, if the overlapping portion is provided, the size of the reinforcing member can be reduced.
[0009]
Therefore, the weight of the elastic support device can be reduced as compared with the case where the reinforcing member is provided on the entire resin molded body or a separate holding member for holding the attached member within an allowable range is specially provided. In addition, cost can be reduced.
[0010]
According to another aspect of the present invention, two rubber adhesive members made of a rubber vulcanized and bonded to the mounting member so as to surround the mounting member are attached to the mounted member, and rubber is bonded at both ends of the cylindrical shape. An injection-molded resin molded body surrounding and connecting the member, wherein the elastic support device has an exposed portion that is embedded in the resin molded body and at least partially exposed to the outside. A metal reinforcing member, and a restricting member that restricts the amount of axial movement of the resin molded body by sandwiching the mounting member from both sides in the axial direction, wherein the reinforcing member overlaps the mounting member in a direction perpendicular to the axis. It is characterized by having.
[0011]
By reinforcing the resin molded body with the reinforcing member and supporting the overlapping portion of the reinforcing member with the mounting member when the resin molded body is broken, the mounting member can be held within an allowable range in the direction perpendicular to the axis.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals.
FIG. 1 is a perspective view showing an attached state of an elastic support device according to the present invention (an arrow (front) in the figure indicates a front side of a vehicle body; the same applies hereinafter), and a sub-frame as a member to be attached to a lower part of the vehicle body. 10 shows that the final reduction gear 12 is attached to the center of the front part of the vehicle 10 via a rear differential mount device 11 as an elastic support device, and the final reduction gear 12 is elastically supported by the rear differential mount device 11. The final reduction gear 12 is elastically supported at another point (not shown), that is, at another point including another rear differential mount device provided at the rear end of the final reduction gear 12.
[0013]
Here, 21 ... (... denotes a plurality; the same applies hereinafter) are mounting bolts for mounting the sub-frame 10 on the vehicle body side, and 22 is a portal frame provided on the sub-frame 10 for mounting the rear differential mount device 11. Reference numerals 23, 24 denote arm support portions provided on the subframe 10 for supporting the suspension arm, 26 denotes a propeller shaft for connecting a transmission (not shown) and the final reduction gear 12, and 27 denotes a propeller shaft 26 and final deceleration. It is a cross joint that connects the device 12.
[0014]
2A and 2B are explanatory views showing a rear mount device according to the present invention, wherein FIG. 2A is a perspective view, and FIG. 2B is a sectional view taken along line bb of FIG.
1A, a rear differential mount device 11 includes a mount body 31 as a resin molded body having a center portion raised and both ends formed lower, and an upper stopper as a regulating member for vertically sandwiching both end portions of the mount body 31. 32, a lower stopper 33 as a regulating member, first bolts 34 for mounting the rear differential mount device 11 to the subframe 10 (see FIG. 1), and second bolts 34 for mounting the rear differential mount device 11 to the final reduction gear 12. The main part of the mount body 31 is formed of a resin material.
[0015]
In (b), the mount body 31 of the rear differential mount device 11 includes a resin beam member 42 integrally formed with cylindrical portions 38, 38 at both ends, and a cylindrical portion of the beam member 42 to reinforce the beam member 42. A reinforcing plate 43 as a metal reinforcing member buried between 38, 38, plate-side collars 44, 44 attached to the reinforcing plate 43 for passing the second bolts 36, 36, A rubber bonding member is formed by a sulfur-adhesive rubber cushion 46 and a cylindrical rubber side collar 47 as an attachment member adhered to the inside of the rubber 46. The rubber 46 is preliminarily vulcanized and bonded to the rubber side collar 47. 48, the two rubber adhesive members 48, 48 and the reinforcing plate 43 are fixed in an injection molding die, and the resin is injected into the injection molding die. Reference numeral 44a denotes a lower surface provided on the plate-side collar 44 for fixing the final reduction gear 12 (see FIG. 1). Reference numerals 53... Denote holes of the beam member 42. These holes 53. This can be performed after the positioning member for positioning the reinforcing plate 43 is removed. Reference numeral 54 denotes a window provided at the center of the beam member 42.
[0016]
The reinforcing plate 43 is provided with through-holes 56 for filling a resin at the time of injection molding in order to increase a bonding force with the beam member 42.
The plate-side collar 44 is attached to the reinforcing plate 43 by welding, caulking, or the like, and the upper surface and the lower surface are exposed to the outside in order to attach the final reduction gear 12 (see FIG. 1) with the second bolts 36.
[0017]
The upper stopper 32 and the lower stopper 33 are members that restrict the displacement of the beam member 42 when the beam member 42 is largely displaced up and down. The first bolt 34 is applied to both ends of the rubber side collar 47 and passes through the rubber side collar 47. It is positioned in the radial direction by penetrating.
[0018]
The above-mentioned reinforcing plate 43 is extended so that both end portions thereof are overlapped above the lower stopper 33, that is, in the axial direction, and the overlapping portion, that is, the overlapping amount (overlapping amount) of the overlapping portions 58, 58 is L. It is.
[0019]
FIG. 3 is a plan view of the rear mount device according to the present invention, in which the reinforcing plate 43 of the rear differential mount device 11 is extended outside the outer peripheral edges 63, 63 of the lower stopper 33 (to the inner peripheral side of the lower stopper 33). 58, 58 (hatched portions) are formed. A notch 65 is provided in the reinforcing plate 43 so as to avoid the window 54 of the beam member 42.
[0020]
FIG. 4 is an exploded perspective view showing a state in which the final reduction gear is mounted on the subframe according to the present invention. The vehicle-body-side mounting portion in which the rear differential mount device 11 is provided above the final reduction gear 12 with the second bolts 36, 36. 67, and the upper stopper 32 and the lower stopper 33 are applied to the upper and lower sides of the rubber side collar 47 of the rear differential mounting apparatus 11 with the final reduction gear 12 attached, and these lower stopper 33, rubber side collar 47, upper stopper 32 1 shows that the rear differential mounting device 11 is attached to the portal frame 22 of the sub-frame 10 by the first bolts 34, 34 by passing the first bolts 34 in order.
[0021]
The operation of the rear differential mount device 11 described above will be described next.
FIG. 5 is an operation diagram showing the operation of the rear mount device according to the present invention.
In a state where the final reduction gear 12 is attached to the sub-frame 10 via the rear differential mount device 11, for example, an excessive downward load acts on the final reduction gear 12, and the cylindrical portion 38 of the beam portion 42 in the rear differential mount device 11 , 38 is damaged, the separating portion 73 of the rear differential mount device 11 separated from the damaged portions 71, 72 is lowered together with the final reduction gear 12, as indicated by a white arrow.
[0022]
However, by applying the overlapping portions 58, 58 of the reinforcing plate 43 protruding from the separating portion 73 to the upper surfaces of the edges of the lower stoppers 33, 33, the further lowering of the final reduction gear 12 is restricted, that is, the final reduction gear 12 is lowered. Can be kept within the allowable range.
[0023]
As described above with reference to FIGS. 1 and 2A and 2B, the beam member 42 is reinforced by the reinforcing plate 43, and when the beam member 42 is damaged, the overlapping portion 58 of the reinforcing plate 43 is moved to the lower stopper. By supporting at 33, the reinforcing plate 43 and thus the final reduction gear 12 can be held within the allowable range in the axial direction.
Further, if the overlapping portion 58 is provided without providing the reinforcing plate 43 on the entire beam member 42, the reinforcing plate 43 can be downsized.
[0024]
Therefore, in the present invention, the weight of the rear differential mount device 11 can be reduced as compared with the case where the reinforcing member is provided on the entire resin molding or the holding member for holding the reinforcing member within an allowable range is specially provided. In addition, cost can be reduced.
[0025]
FIG. 6 is a plan view showing another embodiment of the rear mount device according to the present invention. The same components as those of the embodiment shown in FIG.
The rear mounting device 81 is a member in which front protruding portions 84 and 84 and rear protruding portions 85 and 85 that protrude outward in the longitudinal direction of the reinforcing plate 82 are formed at both ends of the reinforcing plate 82.
[0026]
The front protruding portion 84 (see also the enlarged view) and the rear protruding portion 85 have a front overlapping portion 87 (which overlaps above each of the front portion and the rear portion of the lower stopper 83 (that is, in the axial direction of the rubber side collar 47). The hatched portion) and the rear overlap portion 88 (hatched portion) are formed, and the lower stopper 83 and the front overlap portion 87 and the rear overlap portion 88 damage the beam member 42. It is also possible to keep the final reduction gear within an allowable range in the vertical direction.
[0027]
Further, the front protruding portion 84 (see also the enlarged view) and the rear protruding portion 85 are overlapped in the front-rear direction of the rubber side collars 47 (that is, in the direction perpendicular to the axis of the rubber side collar 47). A lap portion 91 (a hatched portion) and a second overlap portion 92 (a hatched portion. Note that 94 is a straight line that is in contact with the rubber side collar 47 and extends in the front-rear direction). The rubber-side collars 47, 47, the first overlap portion 91 and the second overlap portion 92 adjust the amount of movement of the rear differential mount device 81 in the front-rear direction when the beam member 42 is broken. Can be kept within a predetermined allowable range.
[0028]
In the embodiment of the present invention, the plate-side collar 44 is exposed to the outside in FIG. 2B. However, the present invention is not limited to this. May be exposed to the outside, or a protrusion protruding upward may be formed on the upper surface of the reinforcing plate 43, and a protrusion protruding downward may be formed on the lower surface of the reinforcing plate 43 to expose these protrusions to the outside. Good.
Further, instead of the upper stopper 32, a stopper portion may be formed on the lower surface of the portal frame 22 of the sub-frame 10.
[0029]
【The invention's effect】
The present invention has the following effects by the above configuration.
The elastic supporting device according to the first aspect of the present invention includes a metal reinforcing member having an exposed portion that is integrally embedded in the resin molded body and at least partially exposed to the outside, and a mounting member that is sandwiched from both axial sides. A regulating member that regulates the amount of axial movement of the resin molded body is provided.The reinforcing member includes an overlap portion that overlaps the regulating member in the axial direction. By supporting the overlapping portion of the reinforcing member with the regulating member when the member is broken, the mounted member can be held within a predetermined allowable range in the axial direction.
In addition, even if the reinforcing member is not provided on the entire resin molded body, if the overlapping portion is provided, the size of the reinforcing member can be reduced.
[0030]
Therefore, the weight of the elastic support device can be reduced as compared with the case where the reinforcing member is provided on the entire resin molded body or a separate holding member for holding the attached member within an allowable range is specially provided. In addition, cost can be reduced.
[0031]
The elastic support device according to claim 2 is such that the metal reinforcing member having an exposed portion that is integrally embedded in the resin molded body and at least partially exposed to the outside, and the mounting member are sandwiched from both sides in the axial direction. A regulating member that regulates the amount of axial movement of the resin molded body; and the reinforcing member includes an overlap portion that overlaps with the mounting member in a direction perpendicular to the axis, so that the reinforcing member reinforces the resin molded body. By supporting the overlapping portion of the reinforcing member with the mounting member when the member is broken, the mounting member can be held within an allowable range in the direction perpendicular to the axis.
[Brief description of the drawings]
1 is a perspective view showing an attached state of an elastic support device according to the present invention; FIG. 2 is an explanatory view showing a rear mount device according to the present invention; FIG. 3 is a plan view of a rear mount device according to the present invention; FIG. 5 is an exploded perspective view showing a state in which the final reduction gear is mounted on the sub-frame according to the present invention. FIG. 5 is an operational view showing the operation of the rear mount device according to the present invention. FIG. 7 is a front view of a conventional elastic support device.
10, 12: attached member (sub frame, final reduction gear), 11, 81: elastic support device (rear differential mount device), 31: resin molded body (mount body), 32, 33, 83: regulating member (upper stopper) 43, 82 ... reinforcement member (reinforcement plate), 44 ... exposed portion (plate side collar), 46 ... rubber, 47 ... attachment member (rubber side collar), 48 ... rubber adhesive member, 58, 87 , 88, 91, 92 ... overlap part.

Claims

A shaft-shaped mounting member to be mounted to the mounted member, two rubber bonding members made of rubber vulcanized and bonded to the mounting member so as to surround the mounting member, and the rubber bonding member is surrounded by cylindrical ends. And an injection-molded resin molded body to be connected,
The elastic supporting device is integrally embedded in the resin molded body and has a metal reinforcing member having an exposed portion at least partially exposed to the outside, and the mounting member is sandwiched from both sides in the axial direction. An elastic support device, comprising: a regulating member that regulates an axial movement amount of the resin molded body; and the reinforcing member includes an overlap portion that overlaps the regulating member in the axial direction.

A shaft-shaped mounting member to be mounted to the mounted member, two rubber bonding members made of rubber vulcanized and bonded to the mounting member so as to surround the mounting member, and the rubber bonding member is surrounded by cylindrical ends. And an injection-molded resin molded body to be connected,
The elastic supporting device is integrally embedded in the resin molded body and has a metal reinforcing member having an exposed portion at least partially exposed to the outside, and the mounting member is sandwiched from both sides in the axial direction. An elastic support device comprising: a regulating member that regulates an axial movement amount of the resin molded body; and the reinforcing member includes an overlap portion that overlaps the mounting member in a direction perpendicular to the axis.