JP6473063B2 - Vibration isolator - Google Patents

Vibration isolator Download PDF

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JP6473063B2
JP6473063B2 JP2015189203A JP2015189203A JP6473063B2 JP 6473063 B2 JP6473063 B2 JP 6473063B2 JP 2015189203 A JP2015189203 A JP 2015189203A JP 2015189203 A JP2015189203 A JP 2015189203A JP 6473063 B2 JP6473063 B2 JP 6473063B2
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protrusion
mounting
attachment
buffer
top plate
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JP2017067081A (en
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高橋　俊也
俊也 高橋
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • 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
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B60K5/1208—Resilient supports

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Body Structure For Vehicles (AREA)

Description

この発明は、車体と動力源との間に介在して動力源から車体に伝達される振動を抑制する防振装置に関する。   The present invention relates to a vibration isolator that is interposed between a vehicle body and a power source and suppresses vibrations transmitted from the power source to the vehicle body.

車両の動力源（以下、エンジンともいう。）は、複数の支持装置（エンジンマウント）を介して車体のサブフレーム（以下、単に車体又はサブフレームともいう。）に取り付けられる。例えば、特許文献１、２は、車体とエンジンとを連結すると共に、エンジンから車体に伝達される振動を抑制する支持装置を示す。このような支持装置を防振装置と称する。防振装置は、エンジンに連結される第１取付部と、車体に連結される第２取付部と、第１取付部と第２取付部との間に介在して両者を連結する連結弾性体（ゴム）とを備える。また、第２取付部には、第２取付部に対する第１取付部の離隔方向への変位を規制する変位規制部が固定される。更に、変位規制部のうち第１取付部に正対する部位及び／又は第１取付部のうち変位規制部に正対する部位には、第１取付部が第２取付部に対して離隔方向に変位して変位規制部と当接する場合に発生する衝撃を緩衝する緩衝弾性体（ゴム）が設けられる。   A power source (hereinafter also referred to as an engine) of a vehicle is attached to a subframe (hereinafter also simply referred to as a vehicle body or a subframe) of a vehicle body via a plurality of support devices (engine mounts). For example, Patent Documents 1 and 2 show a support device that connects a vehicle body and an engine and suppresses vibrations transmitted from the engine to the vehicle body. Such a support device is referred to as a vibration isolator. The vibration isolator includes a first attachment portion connected to the engine, a second attachment portion connected to the vehicle body, and a connecting elastic body that is interposed between the first attachment portion and the second attachment portion and connects the two. (Rubber). Further, a displacement restricting portion for restricting displacement of the first attaching portion in the separation direction with respect to the second attaching portion is fixed to the second attaching portion. Furthermore, the first mounting portion is displaced in the separation direction with respect to the second mounting portion in the portion of the displacement regulating portion that faces the first mounting portion and / or the portion of the first mounting portion that faces the displacement regulating portion. In addition, a buffer elastic body (rubber) is provided for buffering an impact that occurs when it comes into contact with the displacement restricting portion.

特開２０１０−２５５６８５号公報JP 2010-255685 A 特開２００４−２９３６０９号公報JP 2004-293609 A

車両の正面衝突時、サブフレームは前方から力を受けて後方に移動しつつ下方に屈曲しようとし、エンジンは慣性により瞬間的に高さを維持しようとする。このとき、エンジン後方側に配置される防振装置には上下軸方向（上述の離隔方向）と略一致する方向に力が入力される。こうした状況下では、サブフレームに対するエンジンの変位を許容するために、エンジンと防振装置とを切り離す必要がある。具体的には、防振装置の連結弾性体を破断させることにより第１取付部（エンジン側）と第２取付部（サブフレーム側）とを切り離すと共に、第１取付部が変位規制部により変位規制されることなく第２取付部から離隔するように変位規制部を破断させる必要がある。   At the time of a frontal collision of the vehicle, the subframe receives a force from the front and tries to bend downward while moving backward, and the engine instantaneously maintains the height due to inertia. At this time, a force is input to the vibration isolator disposed on the rear side of the engine in a direction substantially coinciding with the vertical axis direction (the above-described separation direction). Under such circumstances, it is necessary to separate the engine and the vibration isolator to allow displacement of the engine relative to the subframe. Specifically, the first mounting portion (engine side) and the second mounting portion (subframe side) are separated by breaking the connecting elastic body of the vibration isolator, and the first mounting portion is displaced by the displacement restricting portion. It is necessary to break the displacement restricting portion so as to be separated from the second mounting portion without being restricted.

しかしながら、特許文献１、２で示される防振装置では、変位規制部及び／又は第１取付部に設けられる緩衝弾性体が、第１取付部が変位規制部を破断させる力を緩衝する。このため、変位規制部を十分に破断できないことがある。   However, in the vibration isolator shown in Patent Documents 1 and 2, the buffer elastic body provided in the displacement restricting portion and / or the first attaching portion buffers the force that causes the first attaching portion to break the displacement restricting portion. For this reason, the displacement restricting portion may not be sufficiently broken.

一方、緩衝弾性体が無ければ、第１取付部により変位規制部を比較的容易に破断することが可能である。しかし、そのような構造では車両の通常運転時にエンジンやフレームから入力される振動や撃力により、互いに硬質の第１取付部と変位規制部とが直接当接するため、その都度衝撃が発生することになる。   On the other hand, if there is no buffer elastic body, the displacement restricting portion can be relatively easily broken by the first mounting portion. However, in such a structure, since the hard first mounting portion and the displacement regulating portion are in direct contact with each other due to vibrations and impact force input from the engine and the frame during normal operation of the vehicle, an impact is generated each time. become.

本発明はこのような課題を考慮してなされたものであり、車両の通常運転時にエンジンやフレームから入力される振動や撃力を好適に緩衝することと、車両の正面衝突時に容易に破壊すること、を両立できる防振装置を提供することを目的とする。   The present invention has been made in consideration of such a problem, and suitably dampens vibrations and striking power input from the engine and the frame during normal operation of the vehicle, and easily destroys the vehicle at the time of a frontal collision of the vehicle. An object of the present invention is to provide a vibration isolator capable of satisfying both of the above.

本発明は、動力源に連結される第１取付部と、車体に連結される第２取付部と、前記第１取付部と前記第２取付部とを連結する連結弾性体と、前記第２取付部に固定され、前記第２取付部に対する前記第１取付部の離隔方向への変位を規制する変位規制部と、前記変位規制部のうち前記第１取付部と正対する部位に設けられ、前記第１取付部が前記離隔方向に変位して前記変位規制部と当接する場合に発生する衝撃を緩衝する緩衝部材と、を備え、前記車体と前記動力源との間に介在して前記動力源を支持すると共に、前記動力源から前記車体に伝達される振動を抑制する防振装置であって、前記第１取付部は、前記緩衝部材側に突出する取付突出部を有し、前記緩衝部材は、前記第１取付部側に突出する緩衝突出部を有し、前記緩衝突出部が前記取付突出部に対してオフセットされることを特徴とする。   The present invention includes a first mounting portion connected to a power source, a second mounting portion connected to a vehicle body, a connecting elastic body connecting the first mounting portion and the second mounting portion, and the second A displacement restricting portion fixed to the attaching portion and restricting displacement of the first attaching portion in the separation direction with respect to the second attaching portion; and provided in a portion of the displacement restricting portion facing the first attaching portion; A buffer member for buffering an impact generated when the first mounting portion is displaced in the separation direction and abuts against the displacement restricting portion, and is interposed between the vehicle body and the power source, and A vibration isolator that supports a power source and suppresses vibrations transmitted from the power source to the vehicle body, wherein the first attachment portion has an attachment protrusion that protrudes toward the shock-absorbing member. The member has a buffer protrusion that protrudes toward the first attachment portion, and the buffer protrusion Characterized in that it is offset relative to the mounting projecting portion.

本発明によれば、変位規制部に緩衝部材が設けられるため、車両の通常運転時に動力源や車体から入力される振動や撃力を好適に緩衝することができる。また、本発明によれば、緩衝突出部と取付突出部が設けられ、更に緩衝突出部が取付突出部に対してオフセットされるため、第１取付部と変位規制部とが当接する際に、緩衝突出部と取付突出部とが当接することを抑制できる。すると、車両の正面衝突時に、取付突出部から変位規制部に加えられる力が緩衝突出部によって緩衝されないため、変位規制部を容易に破断させることができる。   According to the present invention, since the buffering member is provided in the displacement restricting portion, it is possible to suitably buffer the vibration and impact force input from the power source and the vehicle body during normal operation of the vehicle. Further, according to the present invention, the buffer protrusion and the mounting protrusion are provided, and the buffer protrusion is further offset with respect to the mounting protrusion, so that when the first mounting portion and the displacement restricting portion abut, It can suppress that a buffer protrusion and an attachment protrusion contact | abut. Then, since the force applied to the displacement restricting portion from the mounting projection portion is not buffered by the buffer projecting portion at the time of a frontal collision of the vehicle, the displacement restricting portion can be easily broken.

本発明において、前記変位規制部からの前記緩衝突出部の突出量よりも、前記第１取付部からの前記取付突出部の突出量の方が小さくすることが好ましい。そうすることで、車両の通常運転時に取付突出部から変位規制部に加えられる力が抑制されるため、変位規制部が取付突出部により破断されることを防止できる。   In the present invention, it is preferable that the amount of protrusion of the attachment protrusion from the first attachment portion is smaller than the amount of protrusion of the buffer protrusion from the displacement restricting portion. By doing so, since the force applied to the displacement restricting portion from the attachment protrusion during normal operation of the vehicle is suppressed, the displacement restricting portion can be prevented from being broken by the attachment protrusion.

本発明において、前記変位規制部は、前記第１取付部の前記離隔方向に配置される天板部と、前記天板部の一端部から前記第２取付部側に延在して前記第２取付部に固定される第１側壁部と、前記天板部の他端部から前記第２取付部側に延在して前記第２取付部に固定される第２側壁部とを有し、前記緩衝部材は、前記天板部に設けられる。   In the present invention, the displacement restricting portion includes a top plate portion arranged in the separation direction of the first attachment portion, and extends from one end portion of the top plate portion to the second attachment portion side to the second attachment portion. A first side wall portion fixed to the mounting portion, and a second side wall portion extending from the other end portion of the top plate portion to the second mounting portion side and fixed to the second mounting portion, The said buffer member is provided in the said top-plate part.

本発明において、前記離隔方向から視て、前記緩衝突出部の頭頂部よりも、前記取付突出部の頭頂部の方が、前記天板部の中心に近いことが好ましい。そうすることで、車両の正面衝突時に、変位規制部が取付突出部から受ける力の作用点の位置が天板部の中心側になるため、第１側壁部及び第２側壁部から作用点までの距離を長くすることができる。すると、作用点に大きなモーメントを生じさせることができるため、変位規制部をより容易に破断させることができる。   In the present invention, it is preferable that the top of the mounting protrusion is closer to the center of the top plate than the top of the buffer protrusion when viewed from the separation direction. By doing so, since the position of the action point of the force that the displacement restricting part receives from the mounting protrusion part becomes the center side of the top plate part at the time of a frontal collision of the vehicle, from the first side wall part and the second side wall part to the action point The distance can be increased. Then, since a large moment can be generated at the action point, the displacement restricting portion can be more easily broken.

本発明において、前記天板部は、前記一端部から前記他端部にわたって形成される２つの縁部を有し、前記第１取付部が前記離隔方向に変位して前記天板部に当接する際に、前記取付突出部が一方の前記縁部に当接することが好ましい。そうすることで、車両の正面衝突時に一方の縁部に力を集中させることができるため、変位規制部を効率良く破断させることができる。   In this invention, the said top-plate part has two edge parts formed from the said one end part to the said other end part, and the said 1st attaching part is displaced to the said separation direction, and contact | abuts to the said top-plate part. In this case, it is preferable that the mounting protrusion comes into contact with one of the edges. By doing so, since the force can be concentrated on one edge during a frontal collision of the vehicle, the displacement restricting portion can be efficiently broken.

また、本発明は、動力源に連結される第１取付部と、車体に連結される第２取付部と、前記第１取付部と前記第２取付部とを連結する連結弾性体と、前記第２取付部に固定され、前記第２取付部に対する前記第１取付部の離隔方向への変位を規制する変位規制部と、前記変位規制部のうち前記第１取付部と正対する部位に設けられ、前記第１取付部が前記離隔方向に変位して前記変位規制部と当接する場合に発生する衝撃を緩衝する緩衝部材と、を備え、前記車体と前記動力源との間に介在して前記動力源を支持すると共に、前記動力源から前記車体に伝達される振動を抑制する防振装置であって、前記第１取付部は、前記緩衝部材側に突出する取付突出部を有し、前記緩衝部材は、前記取付突出部と正対する当接谷部を有することを特徴とする。   Further, the present invention provides a first mounting portion connected to a power source, a second mounting portion connected to a vehicle body, a connecting elastic body connecting the first mounting portion and the second mounting portion, A displacement restricting portion fixed to the second attaching portion and restricting displacement of the first attaching portion in the separation direction with respect to the second attaching portion, and provided in a portion of the displacement restricting portion facing the first attaching portion. And a buffer member for buffering an impact generated when the first mounting portion is displaced in the separation direction and abuts against the displacement restricting portion, and is interposed between the vehicle body and the power source. A vibration isolator that supports the power source and suppresses vibration transmitted from the power source to the vehicle body, wherein the first attachment portion has an attachment protrusion that protrudes toward the buffer member. The shock-absorbing member has an abutting trough facing the mounting protrusion. That.

本発明によれば、変位規制部に緩衝部材が設けられるため、車両の通常運転時にエンジンやフレームから入力される振動や撃力を好適に緩衝することができる。また、本発明によれば、取付突出部と当接谷部が設けられ、更に取付突出部と当接谷部とが互いに正対することにより、車両の正面衝突時に取付突出部と当接谷部とを正確に当接させることができる。すると、車両の正面衝突時に、取付突出部から変位規制部に効率よく力が伝達するため、変位規制部を容易に破断させることができる。   According to the present invention, since the buffer member is provided in the displacement restricting portion, it is possible to suitably buffer the vibration and impact force input from the engine and the frame during normal operation of the vehicle. Further, according to the present invention, the mounting projection and the contact valley are provided, and the mounting projection and the contact valley face each other, so that the mounting projection and the contact valley at the time of a frontal collision of the vehicle. Can be brought into contact with each other accurately. Then, since the force is efficiently transmitted from the mounting protrusion to the displacement restricting portion at the time of a frontal collision of the vehicle, the displacement restricting portion can be easily broken.

本発明において、前記緩衝部材は、前記当接谷部を挟んで前記第１取付部側に突出する緩衝突出部を有し、前記変位規制部からの前記緩衝突出部の突出量よりも、前記第１取付部からの前記取付突出部の突出量の方が小さいことが好ましい。そうすることで、車両の通常運転時に取付突出部から変位規制部に加えられる力が抑制されるため、変位規制部が取付突出部により破断されることを防止できる。   In the present invention, the buffer member has a buffer protrusion that protrudes toward the first attachment portion across the contact valley portion, and more than the protrusion amount of the buffer protrusion from the displacement restricting portion, It is preferable that the amount of protrusion of the attachment protrusion from the first attachment is smaller. By doing so, since the force applied to the displacement restricting portion from the attachment protrusion during normal operation of the vehicle is suppressed, the displacement restricting portion can be prevented from being broken by the attachment protrusion.

本発明において、前記変位規制部は、前記第１取付部の前記離隔方向に配置される天板部と、前記天板部の一端部から前記第２取付部側に延在して前記第２取付部に固定される第１側壁部と、前記天板部の他端部から前記第２取付部側に延在して前記第２取付部に固定される第２側壁部とを有し、前記緩衝部材は、前記天板部に設けられることを特徴とする。   In the present invention, the displacement restricting portion includes a top plate portion arranged in the separation direction of the first attachment portion, and extends from one end portion of the top plate portion to the second attachment portion side to the second attachment portion. A first side wall portion fixed to the mounting portion, and a second side wall portion extending from the other end portion of the top plate portion to the second mounting portion side and fixed to the second mounting portion, The said buffer member is provided in the said top-plate part, It is characterized by the above-mentioned.

本発明において、前記緩衝突出部よりも前記当接谷部の方が前記天板部の中心に近いことが好ましい。そうすることで、車両の正面衝突時に、変位規制部が取付突出部から受ける力の作用点の位置が天板部の中心側になるため、第１側壁部及び第２側壁部から作用点までの距離を長くすることができる。すると、作用点に大きなモーメントを生じさせることができるため、変位規制部をより容易に破断させることができる。   In the present invention, it is preferable that the contact valley portion is closer to the center of the top plate portion than the buffer protrusion portion. By doing so, since the position of the action point of the force that the displacement restricting part receives from the mounting protrusion part becomes the center side of the top plate part at the time of a frontal collision of the vehicle, from the first side wall part and the second side wall part to the action point The distance can be increased. Then, since a large moment can be generated at the action point, the displacement restricting portion can be more easily broken.

本発明において、前記天板部は、前記一端部から前記他端部にわたって形成される２つの縁部を有し、前記第１取付部が前記離隔方向に変位して前記天板部に当接する際に、前記取付突出部が一方の前記縁部に当接することが好ましい。そうすることで、車両の正面衝突時に一方の縁部に力を集中させることができるため、変位規制部を効率良く破断させることができる。   In this invention, the said top-plate part has two edge parts formed from the said one end part to the said other end part, and the said 1st attaching part is displaced to the said separation direction, and contact | abuts to the said top-plate part. In this case, it is preferable that the mounting protrusion comes into contact with one of the edges. By doing so, since the force can be concentrated on one edge during a frontal collision of the vehicle, the displacement restricting portion can be efficiently broken.

本発明によれば、車両の通常運転時にエンジンやフレームから入力される振動や撃力を好適に緩衝することと、車両の正面衝突時に容易に破壊すること、を両立できる。   ADVANTAGE OF THE INVENTION According to this invention, the vibration and impact force which are input from an engine and a flame | frame at the time of normal driving | running | working of a vehicle can be buffered suitably, and it can destroy easily at the time of a vehicle frontal collision.

図１は本実施形態に係る防振装置の左側面図である。FIG. 1 is a left side view of the vibration isolator according to the present embodiment. 図２は図１で示される防振装置であって、第１変位規制部及びエンジン側ブラケットを取り外した状態の防振装置の平面図である。FIG. 2 is a plan view of the vibration isolator shown in FIG. 1 with the first displacement restricting portion and the engine side bracket removed. 図３は図２で示される防振装置のＩＩＩ−ＩＩＩ断面図である。3 is a cross-sectional view of the vibration isolator shown in FIG. 2 taken along line III-III. 図４は第１変位規制部及び当接部の断面模式図である。FIG. 4 is a schematic cross-sectional view of the first displacement restricting portion and the contact portion. 図５は変位規制部及びエンジン側ブラケットの平面図である。FIG. 5 is a plan view of the displacement restricting portion and the engine side bracket. 図６は第１緩衝部材が接着されていない状態のストッパの底面図である。FIG. 6 is a bottom view of the stopper in a state where the first buffer member is not bonded. 図７Ａ〜図７Ｃは取付突出部と緩衝突出部との当接状態を説明するための状態説明図である。7A to 7C are state explanatory views for explaining a contact state between the attachment protrusion and the buffer protrusion.

以下、本発明に係る防振装置１０について好適な実施形態を挙げ、添付の図面を参照して詳細に説明する。なお、以下の説明で用いる上下、前後、左右という方向は、防振装置１０を搭載する車両の上下、前後、左右方向と一致する。本実施形態では防振装置１０の平面側を上とし、底面側を下とし、正面側を前とし、背面側を後とし、左側面側を左とし、右側面側を右とする。   Hereinafter, preferred embodiments of the vibration isolator 10 according to the present invention will be described in detail with reference to the accompanying drawings. In addition, the directions of up and down, front and rear, and left and right used in the following description coincide with the up and down, front and rear, and left and right directions of the vehicle on which the vibration isolator 10 is mounted. In this embodiment, the plane side of the vibration isolator 10 is up, the bottom side is down, the front side is front, the back side is back, the left side is left, and the right side is right.

［１．防振装置１０の全体構成］
図１で示すように、防振装置１０は、第１取付部１２と第２取付部１４と連結弾性体１６と第１変位規制部１８と第２変位規制部２０とを備え、サブフレーム（図示なし）とエンジン（図示なし）との間に介在してエンジンからサブフレームに伝達される振動を抑制する。第１取付部１２はエンジンに連結され、第２取付部１４はサブフレーム（図示なし）に連結される。連結弾性体１６は第１取付部１２と第２取付部１４との間に介在して両者を連結する。第１変位規制部１８は第２取付部１４に固定され、第２取付部１４に対する第１取付部１２の離隔方向（上方向）への変位を規制する。第２変位規制部２０は第２取付部１４に固定され、第２取付部１４に対する第１取付部１２の接近方向（下方向）への変位を規制する。以下、第１取付部１２と第２取付部１４と連結弾性体１６と第１変位規制部１８と第２変位規制部２０について順に説明する。 [1. Overall Configuration of Vibration Isolator 10]
As shown in FIG. 1, the vibration isolator 10 includes a first attachment portion 12, a second attachment portion 14, a connecting elastic body 16, a first displacement restriction portion 18, and a second displacement restriction portion 20, and a subframe ( The vibration transmitted from the engine to the subframe is suppressed by being interposed between the engine (not shown) and the engine (not shown). The first attachment portion 12 is connected to the engine, and the second attachment portion 14 is connected to a subframe (not shown). The connecting elastic body 16 is interposed between the first mounting portion 12 and the second mounting portion 14 to connect the two. The first displacement restricting portion 18 is fixed to the second attaching portion 14 and restricts displacement of the first attaching portion 12 in the separation direction (upward direction) with respect to the second attaching portion 14. The second displacement restricting portion 20 is fixed to the second attaching portion 14 and restricts displacement of the first attaching portion 12 in the approaching direction (downward) with respect to the second attaching portion 14. Hereinafter, the first attachment portion 12, the second attachment portion 14, the connecting elastic body 16, the first displacement restricting portion 18, and the second displacement restricting portion 20 will be described in order.

［２．第１取付部１２］
図１〜図３を用いて第１取付部１２の構成を説明する。第１取付部１２は、エンジンに直接連結されるエンジン側ブラケット２２と、連結弾性体１６に接着される第１インナー金具２４及び第２インナー金具２６と、備える。エンジン側ブラケット２２は、金属部材で構成され、エンジンにボルト（図示せず）等で固定されるフランジ部２８と、フランジ部２８からエンジンの方向と逆方向（図１の左側）に延びるアーム部３０と、を備える。アーム部３０の先端側には当接部１１０が形成される。当接部１１０の構成については後述する。 [2. First mounting portion 12]
The structure of the 1st attachment part 12 is demonstrated using FIGS. 1-3. The first mounting portion 12 includes an engine-side bracket 22 that is directly connected to the engine, and a first inner metal fitting 24 and a second inner metal fitting 26 that are bonded to the connecting elastic body 16. The engine-side bracket 22 is made of a metal member, and is fixed to the engine with a bolt (not shown) or the like. 30. A contact portion 110 is formed on the distal end side of the arm portion 30. The configuration of the contact portion 110 will be described later.

第１インナー金具２４は、厚肉で円板状の金属部材で構成され、上面には上方向に延在する取付板部３２が形成される。取付板部３２の正面にはブラケット２２の当接部１１０がボルト３４で固定される。第２インナー金具２６は、第１インナー金具２４よりも更に厚肉で、且つ、周面が下方向に向かって先細る円錐台状の金属部材で構成される。第２インナー金具２６の上面には第１インナー金具２４がボルト３６で固定される。   The first inner metal fitting 24 is formed of a thick and disc-shaped metal member, and an attachment plate portion 32 extending upward is formed on the upper surface. The abutting portion 110 of the bracket 22 is fixed to the front surface of the mounting plate portion 32 with bolts 34. The second inner metal fitting 26 is made of a truncated cone-shaped metal member that is thicker than the first inner metal fitting 24 and whose peripheral surface tapers downward. The first inner metal fitting 24 is fixed to the upper surface of the second inner metal fitting 26 with bolts 36.

［３．第２取付部１４］
図３を用いて第２取付部１４の構成を説明する。第２取付部１４は、サブフレームに直接連結されるフレーム側ブラケット４０と、連結弾性体１６に接着される第１アウター金具４２及び第２アウター金具４４と、第１アウター金具４２及び第２アウター金具４４の下方開口部を閉塞する蓋部材４６と、を備える。フレーム側ブラケット４０は、金属部材で構成され、サブフレームにボルト（図示せず）等で固定される下部フランジ部４８と、第１アウター金具４２に接合される上部フランジ部５０と、が形成される。 [3. Second mounting portion 14]
The structure of the 2nd attachment part 14 is demonstrated using FIG. The second mounting portion 14 includes a frame-side bracket 40 that is directly connected to the subframe, a first outer metal fitting 42 and a second outer metal fitting 44 that are bonded to the connecting elastic body 16, and a first outer metal fitting 42 and a second outer metal fitting. And a lid member 46 that closes the lower opening of the metal fitting 44. The frame side bracket 40 is made of a metal member, and is formed with a lower flange portion 48 fixed to the subframe with a bolt (not shown) or the like, and an upper flange portion 50 joined to the first outer metal fitting 42. The

第１アウター金具４２は、円筒状の金属部材で構成され、上部開口部には円筒の放射方向に拡がるフランジ部５２が形成され、下部には円筒の放射方向に突き出る環状かしめ部５４が形成される。第２アウター金具４４は、円筒状の金属部材を有し、円筒部材上部には下方向から開口部にかけて円筒の放射方向に徐々に拡径する傾斜部５６が形成され、円筒部材下部の開口部には円筒の放射方向に拡がるフランジ部５８が形成される。第２アウター金具４４は第１アウター金具４２の内周側に配置される。蓋部材４６は、円板状の金属部材で構成され、その径は第１アウター金具４２及び第２アウター金具４４の円筒の径よりも大きい。   The first outer metal fitting 42 is formed of a cylindrical metal member. A flange portion 52 that extends in the radial direction of the cylinder is formed in the upper opening portion, and an annular caulking portion 54 that protrudes in the radial direction of the cylinder is formed in the lower portion. The The second outer metal fitting 44 has a cylindrical metal member, and an inclined portion 56 that gradually increases in diameter in the radial direction of the cylinder from the lower direction to the opening is formed on the upper portion of the cylindrical member. Is formed with a flange portion 58 extending in the radial direction of the cylinder. The second outer metal fitting 44 is disposed on the inner peripheral side of the first outer metal fitting 42. The lid member 46 is made of a disk-shaped metal member, and the diameter thereof is larger than the cylindrical diameters of the first outer metal fitting 42 and the second outer metal fitting 44.

第２アウター金具４４のフランジ部５８と蓋部材４６の外縁とフレーム側ブラケット４０の上部フランジ部５０とが、第１アウター金具４２の環状かしめ部５８の内周側でかしめにより接合される。   The flange portion 58 of the second outer metal fitting 44, the outer edge of the lid member 46, and the upper flange portion 50 of the frame side bracket 40 are joined by caulking on the inner peripheral side of the annular caulking portion 58 of the first outer metal fitting 42.

［４．連結弾性体１６］
図３を用いて連結弾性体１６の構成を説明する。連結弾性体１６は、第１インナー金具２４と第１アウター金具４２とを連結するダイヤフラム６２と、第２インナー金具２６と第２アウター金具４４とを連結するゴム本体６４と、を備える。ダイヤフラム６２は、可撓性のゴム膜で構成され、内周側が第１インナー金具２４の外周面に接着され、外周側が第１アウター金具４２の内周面に接着される。ゴム本体６４は、内周側が第２インナー金具２６の外周面及び下面に接着され、外周側が第２アウター金具４４の内周面及び一部外周面に接着される。 [4. Connecting elastic body 16]
The structure of the connection elastic body 16 is demonstrated using FIG. The connecting elastic body 16 includes a diaphragm 62 that connects the first inner fitting 24 and the first outer fitting 42, and a rubber body 64 that connects the second inner fitting 26 and the second outer fitting 44. The diaphragm 62 is made of a flexible rubber film, and the inner peripheral side is bonded to the outer peripheral surface of the first inner metal fitting 24 and the outer peripheral side is bonded to the inner peripheral surface of the first outer metal fitting 42. The rubber body 64 is bonded to the outer peripheral surface and the lower surface of the second inner metal fitting 26 on the inner peripheral side, and to the inner peripheral surface and a part of the outer peripheral surface of the second outer metal fitting 44 on the outer peripheral side.

ダイヤフラム６２とゴム本体６４により平衡室６６が画生される。また、ゴム本体６４と蓋部材４６により受圧室６８が画生される。平衡室６６と受圧室６８には粘性を有する流体が封入される。更に、第２アウター金具４４の内周面には連通孔７０が形成され、外周面には連通孔７２が形成され、内部には周方向に沿って延在し連通孔７０、７２を連通するオリフィス流路７４が形成される。防振装置１０に力が入力されると、受圧室６８と平衡室６６に封入される流体がオリフィス流路７４を通じて受圧室６８と平衡室６６との間を流動する。   An equilibrium chamber 66 is created by the diaphragm 62 and the rubber body 64. Further, a pressure receiving chamber 68 is created by the rubber main body 64 and the lid member 46. A fluid having viscosity is sealed in the equilibrium chamber 66 and the pressure receiving chamber 68. Further, a communication hole 70 is formed on the inner peripheral surface of the second outer metal fitting 44, a communication hole 72 is formed on the outer peripheral surface, and the communication hole 70, 72 is communicated with the inside extending along the circumferential direction. An orifice channel 74 is formed. When a force is input to the vibration isolator 10, the fluid sealed in the pressure receiving chamber 68 and the equilibrium chamber 66 flows between the pressure receiving chamber 68 and the equilibrium chamber 66 through the orifice channel 74.

［５．第１変位規制部１８及び第２変位規制部２０］
図１、図３を用いて第１変位規制部１８の構成を説明する。第１変位規制部１８は、第２取付部１４に固定されるストッパ７８と、エンジン側ブラケット２２の上面と正対する第１緩衝部材８０と、を備える。ストッパ７８は、屈曲する板状の金属部材で構成される。ストッパ７８には、金属部材の中心部分を含み当接部１１０と正対する天板部８２と、天板部８２の一端部からサブフレームの方向（下方向）に延在する第１側壁部８４と、天板部８２の他端部からサブフレームの方向（下方向）に延在する第２側壁部８６と、が形成される。更に、第１側壁部８４の下端部には、第１アウター金具４２のフランジ部５２と（第２変位規制部２０の板９６を介して）正対する取付板部８８が形成される。同様に、第２側壁部８６の下端部には、第１アウター金具４２のフランジ部５２と（第２変位規制部２０の板９６を介して）正対する取付板部９０が形成される。ストッパ７８の正面側と背面側には、取付板部８８から取付板部９０にわたって垂直方向に延在するリブ９２、９４が形成される。第１緩衝部材８０は、弾性部材、例えばゴムで構成され、天板部８２の下面とリブ９２の正面とリブ９４の背面に接着される。第１緩衝部材８０の更なる構成については後述する。 [5. First displacement restricting portion 18 and second displacement restricting portion 20]
The structure of the 1st displacement control part 18 is demonstrated using FIG. 1, FIG. The first displacement restricting portion 18 includes a stopper 78 fixed to the second mounting portion 14 and a first buffer member 80 that faces the upper surface of the engine side bracket 22. The stopper 78 is composed of a bent plate-shaped metal member. The stopper 78 includes a central portion of the metal member and includes a top plate portion 82 that faces the contact portion 110, and a first side wall portion 84 that extends from one end of the top plate portion 82 in the subframe direction (downward). And the 2nd side wall part 86 extended in the direction (downward direction) of a sub-frame from the other end part of the top-plate part 82 is formed. Furthermore, a mounting plate portion 88 that faces the flange portion 52 of the first outer metal fitting 42 (via the plate 96 of the second displacement restricting portion 20) is formed at the lower end portion of the first side wall portion 84. Similarly, a mounting plate portion 90 that faces the flange portion 52 of the first outer metal fitting 42 (via the plate 96 of the second displacement restricting portion 20) is formed at the lower end portion of the second side wall portion 86. Ribs 92 and 94 extending in the vertical direction from the attachment plate portion 88 to the attachment plate portion 90 are formed on the front side and the back side of the stopper 78. The first buffer member 80 is made of an elastic member such as rubber, and is bonded to the lower surface of the top plate portion 82, the front surface of the rib 92, and the rear surface of the rib 94. A further configuration of the first buffer member 80 will be described later.

第２変位規制部２０の構成を図１〜図３を用いて説明する。第２変位規制部２０は、第２取付部１４に固定される板９６と、エンジン側ブラケット２２のアーム部３０の下面と正対する第２緩衝部材９８と、を備える。板９６は、円弧状の金属部材で構成される。第２緩衝部材９８は、弾性部材、例えばゴムで構成され、板９６の上面に接着される。   The structure of the 2nd displacement control part 20 is demonstrated using FIGS. 1-3. The second displacement restricting portion 20 includes a plate 96 that is fixed to the second mounting portion 14 and a second buffer member 98 that faces the lower surface of the arm portion 30 of the engine side bracket 22. The plate 96 is made of an arc-shaped metal member. The second buffer member 98 is made of an elastic member, such as rubber, and is bonded to the upper surface of the plate 96.

図３で示すように、第１アウター金具４２のフランジ部５２の上に板９６が重ねられ、更に板９６の上にストッパ７８の取付板部８８、９０が重ねられる。そして、一方で、フランジ部５２と板９６と取付板部８８がボルト１００とナット１０２により固定され、他方で、フランジ部５２と板９６と取付板部９０がボルト１００とナット１０２により固定される。   As shown in FIG. 3, the plate 96 is overlaid on the flange portion 52 of the first outer metal fitting 42, and the mounting plate portions 88 and 90 of the stopper 78 are overlaid on the plate 96. On the other hand, the flange portion 52, the plate 96, and the mounting plate portion 88 are fixed by the bolt 100 and the nut 102, and on the other hand, the flange portion 52, the plate 96, and the mounting plate portion 90 are fixed by the bolt 100 and the nut 102. .

第１変位規制部１８は、第２取付部１４に対する第１取付部１２の離隔方向（上方向）への変位量、すなわち防振装置１０のリバウンド側のストローク量を規制する。一方、第２変位規制部２０は、第２取付部１４に対する第１取付部１２の接近方向への変位量、すなわち防振装置１０のバウンド側のストローク量を規制する。   The first displacement restricting portion 18 restricts the amount of displacement of the first attachment portion 12 in the separation direction (upward direction) relative to the second attachment portion 14, that is, the stroke amount on the rebound side of the vibration isolator 10. On the other hand, the second displacement restricting portion 20 restricts the amount of displacement of the first attachment portion 12 in the approaching direction with respect to the second attachment portion 14, that is, the amount of stroke on the bound side of the vibration isolator 10.

［６．当接部１１０と第１緩衝部材８０の構成］
図４で示すように、当接部１１０の上面には、平面状の当接面１１２と、当接面１１２から第１緩衝部材８０側（上方向）に突出する取付突出部１１４が形成される。取付突出部１１４は、当接面１１２に繋がる取付傾斜面１１６と、最も突出する取付頭頂部１１８と、を有する。取付頭頂部１１８は当接面１１２から突出量ｈ１だけ突出し、前後方向（図４の紙面垂直方向）に線状又は面状に延在する。 [6. Configuration of Contact Part 110 and First Buffer Member 80]
As shown in FIG. 4, a flat contact surface 112 and a mounting protrusion 114 that protrudes from the contact surface 112 toward the first buffer member 80 (upward) are formed on the upper surface of the contact portion 110. The The attachment protrusion 114 has an attachment inclined surface 116 connected to the contact surface 112 and an attachment head top portion 118 that protrudes most. The mounting head portion 118 protrudes from the contact surface 112 by a protrusion amount h1, and extends linearly or planarly in the front-rear direction (perpendicular to the plane of FIG. 4).

図１、図４で示すように、第１緩衝部材８０には、ストッパ７８の天板部８２の下面とリブ９２の正面とリブ９４の背面とを被覆する被覆部１２０と、被覆部１２０から当接部１１０側（下方向）に突出する２つの略山型の緩衝突出部１２２が形成される。緩衝突出部１２２は、被覆部１２０に繋がる緩衝傾斜面１２４と、最も突出する緩衝頭頂部１２６と、を有する。緩衝頭頂部１２６は被覆部１２０から突出量ｈ２だけ突出し、前後方向に線状又は面状に延在する。緩衝頭頂部１２６の突出量ｈ２は、取付頭頂部１１８の突出量ｈ１よりも大きい。２つの緩衝突出部１２２の間には当接谷部１２８が形成される。当接谷部１２８は被覆部１２０と同一高さにあり、前後方向に線状又は面状に延在する。当接谷部１２８は天板部８２の中心位置Ｃと重なるように配置される。また、当接谷部１２８と緩衝頭頂部１２６との間の緩衝傾斜面１２４は階段状である。   As shown in FIGS. 1 and 4, the first buffer member 80 includes a covering portion 120 that covers the lower surface of the top plate portion 82 of the stopper 78, the front surface of the rib 92, and the back surface of the rib 94, and the covering portion 120. Two substantially mountain-shaped buffering protrusions 122 that protrude toward the contact part 110 (downward) are formed. The buffer protrusion 122 has a buffer inclined surface 124 connected to the covering portion 120 and a buffer top 126 that protrudes most. The buffer head portion 126 protrudes from the covering portion 120 by a protrusion amount h2, and extends linearly or planarly in the front-rear direction. The protruding amount h2 of the buffer top portion 126 is larger than the protruding amount h1 of the mounting head portion 118. A contact valley portion 128 is formed between the two buffer protrusions 122. The contact valley portion 128 is at the same height as the covering portion 120 and extends linearly or planarly in the front-rear direction. The contact valley portion 128 is disposed so as to overlap the center position C of the top plate portion 82. Further, the buffer inclined surface 124 between the contact valley portion 128 and the buffer top portion 126 has a step shape.

［７．当接部１１０と第１緩衝部材８０の位置関係］
当接部１１０と第１緩衝部材８０の上下方向と左右方向（車幅方向）の位置関係を説明する。図４で示すように、当接部１１０の当接面１１２と第１緩衝部材８０の２つの緩衝突出部１２２は、通常状態（防振装置１０に振動等が入力されない状態。）で距離ｄ１を隔てて互いに正対する。また、当接部１１０の取付突出部１１４と第１緩衝部材８０の当接谷部１２８は、通常状態で距離ｄ２（＞ｄ１）を隔てて互いに正対する。上述したように、当接谷部１２８は天板部８２の中心位置Ｃに配置される。このため、図５で示すように、上方向、すなわち第２取付部１４に対する第１取付部１２の離隔方向から視て、緩衝突出部１２２の緩衝頭頂部１２６よりも、取付突出部１１４の取付頭頂部１１８の方が、天板部８２の中心位置Ｃに近い。 [7. Positional relationship between contact portion 110 and first buffer member 80]
A positional relationship between the abutting portion 110 and the first buffer member 80 in the vertical direction and the horizontal direction (vehicle width direction) will be described. As shown in FIG. 4, the contact surface 112 of the contact portion 110 and the two buffer protrusions 122 of the first buffer member 80 are in a normal state (a state where no vibration or the like is input to the vibration isolator 10). They face each other with a gap. Further, the mounting protrusion 114 of the contact portion 110 and the contact valley portion 128 of the first buffer member 80 face each other at a distance d2 (> d1) in a normal state. As described above, the contact valley portion 128 is disposed at the center position C of the top plate portion 82. For this reason, as shown in FIG. 5, the mounting projection 114 is mounted more than the buffer top portion 126 of the buffer projection 122 as viewed from above, that is, from the direction in which the first mounting portion 12 is separated from the second mounting portion 14. The top portion 118 is closer to the center position C of the top plate portion 82.

このように、２つの緩衝突出部１２２は取付突出部１１４に対してオフセットされる。具体的には、２つの緩衝突出部１２２の緩衝頭頂部１２６は、取付突出部１１４の取付頭頂部１１８に対して左右方向（車幅方向）にオフセットされる。こうした配置により、当接部１１０と第１緩衝部材８０とが当接する際に、取付突出部１１４の取付頭頂部１１８と２つの緩衝突出部１２２の緩衝頭頂部１２６は互いに接触しない。   Thus, the two buffer protrusions 122 are offset with respect to the mounting protrusion 114. Specifically, the buffer tops 126 of the two buffer protrusions 122 are offset in the left-right direction (vehicle width direction) with respect to the mounting heads 118 of the mounting protrusions 114. With this arrangement, when the contact portion 110 and the first buffer member 80 are in contact, the mounting head portion 118 of the mounting protrusion 114 and the buffer head portion 126 of the two buffer protrusions 122 do not contact each other.

［８．当接部１１０とストッパ７８の位置関係］
当接部１１０とストッパ７８の前後方向の位置関係を説明する。図６で示すように、ストッパ７８の天板部８２の下面には、第１側壁部８４に繋がる一端部から、第２側壁部８６に繋がる他端部にわたって、２つの縁部１３４、１３６がある。図１で示すように、取付突出部１１４と緩衝突出部１２２の前後方向の位置を比較すると、取付突出部１１４の方が緩衝突出部１２２よりも前方、すなわちエンジンの近くに配置される。更に、取付突出部１１４は、前方の縁部１３４と正対する一方で、後方の縁部１３６とは正対しない。 [8. Positional relationship between contact portion 110 and stopper 78]
The positional relationship between the contact portion 110 and the stopper 78 in the front-rear direction will be described. As shown in FIG. 6, two edges 134 and 136 are formed on the lower surface of the top plate portion 82 of the stopper 78 from one end connected to the first side wall 84 to the other end connected to the second side wall 86. is there. As shown in FIG. 1, when the front and rear positions of the attachment protrusion 114 and the buffer protrusion 122 are compared, the attachment protrusion 114 is disposed in front of the buffer protrusion 122, that is, near the engine. Furthermore, the mounting protrusion 114 faces the front edge 134, but does not face the rear edge 136.

［９．当接部１１０と第１緩衝部材８０との当接］
当接部１１０と第１緩衝部材８０との当接について、図７Ａ〜図７Ｃを用いて説明する。なお、紙面の関係上、図７Ａ〜図７Ｃは他の図と比較して当接部１１０を肉薄にして示している。防振装置１０に上下方向の力が入力されると、リバウンド時に図１で示す第１取付部１２と第２取付部１４は互いに離隔する。このとき、入力される力が大きいと、当接部１１０と第１緩衝部材８０とが当接する。 [9. Contact between the contact portion 110 and the first buffer member 80]
The contact between the contact portion 110 and the first buffer member 80 will be described with reference to FIGS. 7A to 7C. 7A to 7C show the abutting portion 110 thinner than the other drawings because of space limitations. When a vertical force is input to the vibration isolator 10, the first attachment portion 12 and the second attachment portion 14 shown in FIG. 1 are separated from each other during rebound. At this time, when the input force is large, the contact portion 110 and the first buffer member 80 contact each other.

取付突出部１１４の突出量ｈ１は、緩衝突出部１２２の突出量ｈ２よりも小さい。このため、当接部１１０と第１緩衝部材８０とが当接する際には、最初に２つの緩衝頭頂部１２６と当接面１１２とが当接する。具体的には、図７Ａで示すように、第２取付部１４に対する第１取付部１２の離隔方向（上方向）への変位量がｄ１になると、２つ緩衝頭頂部１２６と当接面１１２とが当接する。このとき、取付頭頂部１１８と当接谷部１２８は当接しない。変位量がｄ１を超えて大きくなると、２つ緩衝突出部１２２は徐々に潰れていく。図７Ｂで示すように、変位量がｄ２になると、取付頭頂部１１８と当接谷部１２８とが当接する。図７Ｃで示すように、変位量がｄ２を超えて更に大きくなると、取付突出部１１４が当接谷部１２８を破断し、取付頭頂部１１８が天板部８２の中心位置Ｃに当接する。このとき、取付頭頂部１１８は、天板部８２の前方の縁部１３４を含む当接領域Ａ（図６参照）に当接する一方、後方の縁部１３６には当接しない。取付頭頂部１１８は、当接領域Ａを起点としてストッパ７８を破断する。   The protrusion amount h1 of the attachment protrusion 114 is smaller than the protrusion amount h2 of the buffer protrusion 122. For this reason, when the contact part 110 and the 1st buffer member 80 contact | abut, two buffer top parts 126 and the contact surface 112 contact | abut first. Specifically, as shown in FIG. 7A, when the displacement amount in the separation direction (upward direction) of the first mounting portion 12 with respect to the second mounting portion 14 becomes d1, the two buffering top portions 126 and the contact surfaces 112 are arranged. And abut. At this time, the mounting head top portion 118 and the contact valley portion 128 do not contact each other. When the amount of displacement increases beyond d1, the two buffer protrusions 122 gradually collapse. As shown in FIG. 7B, when the displacement amount is d2, the mounting head top portion 118 and the contact valley portion 128 come into contact with each other. As shown in FIG. 7C, when the displacement amount further exceeds d 2, the mounting protrusion 114 breaks the contact valley portion 128, and the mounting top portion 118 contacts the center position C of the top plate portion 82. At this time, the mounting head portion 118 abuts against the abutting region A (see FIG. 6) including the front edge portion 134 of the top plate portion 82, but does not abut against the rear edge portion 136. The mounting head top portion 118 breaks the stopper 78 starting from the contact area A.

［１０．他の実施形態］
上記実施形態では、第１緩衝部材８０は、緩衝傾斜面１２４が形成される２つの緩衝突出部１２２と、２つの緩衝突出部１２２の間に形成される当接谷部１２８とを有する。この実施形態に限らず、第１緩衝部材８０が略直方体の弾性部材からなり、その弾性部材に、当接谷部１２８に相当する溝が形成されてもよい。 [10. Other Embodiments]
In the above embodiment, the first buffer member 80 includes the two buffer protrusions 122 where the buffer inclined surfaces 124 are formed, and the contact valley portion 128 formed between the two buffer protrusions 122. Not only this embodiment but the 1st buffer member 80 consists of a substantially rectangular parallelepiped elastic member, and the groove | channel corresponding to the contact valley part 128 may be formed in the elastic member.

また、緩衝突出部１２２は２つでなく、１つ又は３つ以上に分割形成されていてもよい。   Moreover, the buffer protrusions 122 may be divided into one or three or more instead of two.

上記実施形態では、取付突出部１１４は緩衝突出部１２２よりも前方に配置されるが、取付突出部１１４が緩衝突出部１２２よりも後方に配置されてもよい。この構成によれば、取付頭頂部１１８は、天板部８２の後方の縁部１３６を含む当接領域（図示せず）に当接する一方、前方の縁部１３４には当接しない。   In the above-described embodiment, the attachment protrusion 114 is disposed in front of the buffer protrusion 122, but the attachment protrusion 114 may be disposed behind the buffer protrusion 122. According to this configuration, the mounting head top portion 118 abuts against a contact region (not shown) including the rear edge 136 of the top plate portion 82, but does not contact the front edge 134.

また、取付突出部１１４と緩衝突出部１２２が前後方向の略同一位置に配置されてもよい。この構成によれば、取付頭頂部１１８は、天板部８２の前後の縁部１３４、１３６を含む当接領域（図示せず）に当接する。この場合、上記実施形態と比較してストッパ７８を破断しにくくなるが、従来装置と比較すればストッパ７８を破断しやすい。   Further, the attachment protrusion 114 and the buffer protrusion 122 may be arranged at substantially the same position in the front-rear direction. According to this configuration, the mounting head top portion 118 abuts against a contact region (not shown) including the front and rear edge portions 134 and 136 of the top plate portion 82. In this case, the stopper 78 is less likely to be broken than in the above embodiment, but the stopper 78 is more likely to be broken than in the conventional apparatus.

また、取付突出部１１４が略点状の突起でもよい。この構成によれば、頭頂部に力が集中するため、ストッパ７８を破断しやすくなる。   Further, the attachment protrusion 114 may be a substantially dot-like protrusion. According to this configuration, since the force concentrates on the top of the head, the stopper 78 is easily broken.

また、取付突出部１１４の取付頭頂部１１８が天板部８２の中心位置Ｃに当接する実施形態が最も好適である。しかし、取付突出部１１４の取付頭頂部１１８が天板部８２の中心位置Ｃに当接しなくてもよい。このような構成であっても、従来装置と比較すればストッパ７８を破断しやすいといえる。   Further, an embodiment in which the mounting head portion 118 of the mounting protrusion 114 abuts on the center position C of the top plate portion 82 is most preferable. However, the mounting head portion 118 of the mounting protrusion 114 does not have to contact the center position C of the top plate portion 82. Even with such a configuration, it can be said that the stopper 78 is easily broken as compared with the conventional apparatus.

本発明は、エンジンの振動の変位を推定し、その変位を打ち消すように電子制御式のアクチュエータを動作させる防振装置１０、所謂アクティブコントロールエンジンマウントにも利用可能である。   The present invention is also applicable to a vibration isolator 10 that operates an electronically controlled actuator so as to estimate the displacement of engine vibration and cancel the displacement, so-called active control engine mount.

［１１．本実施形態のまとめ］
本実施形態に係る防振装置１０は、エンジンン（動力源）に連結される第１取付部１２と、サブフレーム（車体）に連結される第２取付部１４と、第１取付部１２と第２取付部１４とを連結する連結弾性体１６と、第２取付部１４に固定され、第２取付部１４に対する第１取付部１２の離隔方向への変位を規制する第１変位規制部１８と、第１変位規制部１８のうち第１取付部１２と正対する部位に設けられ、第１取付部１２が離隔方向に変位して第１変位規制部１８と当接する場合に発生する衝撃を緩衝する第１緩衝部材（緩衝部材）８０と、を備える。第１取付部１２は、第１緩衝部材８０側に突出する取付突出部１１４を有し、第１緩衝部材８０は、第１取付部１２側に突出する緩衝突出部１２２を有する。更に、第１緩衝部材８０は、取付突出部１１４と正対する当接谷部１２８を有する。すなわち、緩衝突出部１２２は取付突出部１１４に対してオフセットされる。 [11. Summary of this embodiment]
The vibration isolator 10 according to the present embodiment includes a first mounting portion 12 connected to an engine (power source), a second mounting portion 14 connected to a subframe (vehicle body), and a first mounting portion 12. A connecting elastic body 16 that connects the second mounting portion 14, and a first displacement regulating portion 18 that is fixed to the second mounting portion 14 and regulates displacement of the first mounting portion 12 in the separation direction relative to the second mounting portion 14. And an impact generated when the first mounting portion 12 is displaced in the separation direction and comes into contact with the first displacement limiting portion 18. A first buffer member (buffer member) 80 for buffering. The first mounting portion 12 has a mounting protrusion 114 that protrudes toward the first buffer member 80, and the first buffer member 80 has a buffer protrusion 122 that protrudes toward the first mounting portion 12. Further, the first buffer member 80 has a contact valley portion 128 that faces the mounting protrusion 114. That is, the buffer protrusion 122 is offset with respect to the attachment protrusion 114.

本実施形態によれば、第１変位規制部１８に第１緩衝部材８０が設けられるため、車両の通常運転時にエンジンやフレームから入力される振動や撃力を好適に緩衝することができる。   According to this embodiment, since the 1st buffer member 80 is provided in the 1st displacement control part 18, the vibration and impact force which are input from an engine or a flame | frame at the time of normal driving | running | working of a vehicle can be buffered suitably.

また、本実施形態によれば、取付突出部１１４と当接谷部１２８が設けられ、取付突出部１１４と当接谷部１２８とが互いに正対することにより、車両の正面衝突時に取付突出部１１４と当接谷部１２８とを正確に当接させることができる。すると、車両の正面衝突時に、取付突出部１１４から第１変位規制部１８に効率よく力が伝達するため、第１変位規制部１８を容易に破断させることができる。   Further, according to the present embodiment, the mounting protrusion 114 and the contact valley portion 128 are provided, and the mounting protrusion 114 and the contact valley portion 128 face each other, so that the mounting protrusion 114 at the time of a frontal collision of the vehicle. And the contact valley portion 128 can be contacted accurately. Then, since a force is efficiently transmitted from the mounting protrusion 114 to the first displacement restricting portion 18 at the time of a frontal collision of the vehicle, the first displacement restricting portion 18 can be easily broken.

また、本実施形態によれば、緩衝突出部１２２が取付突出部１１４に対してオフセットされるため、第１取付部１２と第１変位規制部１８とが当接する際に、緩衝突出部１２２と取付突出部１１４とが当接することを抑制できる。すると、車両の正面衝突時に、取付突出部１１４から第１変位規制部１８に加えられる力が緩衝突出部１２２によって緩衝されないため、第１変位規制部１８を容易に破断させることができる。   In addition, according to the present embodiment, since the buffer protrusion 122 is offset with respect to the mounting protrusion 114, when the first mounting portion 12 and the first displacement restricting portion 18 come into contact with each other, It can suppress that the attachment protrusion part 114 contact | abuts. Then, since the force applied from the attachment protrusion 114 to the first displacement restrictor 18 is not buffered by the buffer protrusion 122 during a frontal collision of the vehicle, the first displacement restrictor 18 can be easily broken.

本実施形態においては、被覆部１２０からの緩衝突出部１２２の突出量ｈ２よりも、当接面１１２からの取付突出部１１４の突出量ｈ１の方が小さい。この構成によれば、車両の通常運転時に取付突出部１１４から第１変位規制部１８に加えられる力が抑制されるため、第１変位規制部１８が取付突出部１１４により破断されることを防止できる。   In the present embodiment, the protrusion amount h1 of the mounting protrusion 114 from the contact surface 112 is smaller than the protrusion amount h2 of the buffer protrusion 122 from the covering portion 120. According to this configuration, the force applied from the mounting protrusion 114 to the first displacement restricting portion 18 during normal operation of the vehicle is suppressed, so that the first displacement restricting portion 18 is prevented from being broken by the mounting protruding portion 114. it can.

本実施形態において、第２取付部１４に対する第１取付部１２の離隔方向（上方向）から視て、緩衝突出部１２２の緩衝頭頂部１２６よりも、取付突出部１１４の取付頭頂部１１８の方が、天板部８２の中心位置Ｃに近い。この構成によれば、車両の正面衝突時に、第１変位規制部１８が取付突出部１１４から受ける力の作用点の位置が天板部８２の中心側になるため、第１側壁部８４及び第２側壁部８６から作用点までの距離を長くすることができる。すると、作用点に大きなモーメントを生じさせることができるため、第１変位規制部１８をより容易に破断させることができる。   In the present embodiment, when viewed from the separation direction (upward direction) of the first mounting portion 12 with respect to the second mounting portion 14, the mounting head portion 118 of the mounting protrusion portion 114 is more than the buffer head portion 126 of the buffer protrusion portion 122. Is close to the center position C of the top plate portion 82. According to this configuration, since the position of the point of application of the force received by the first displacement restricting portion 18 from the mounting projection 114 at the frontal collision of the vehicle is on the center side of the top plate portion 82, the first side wall 84 and the first The distance from the 2 side wall part 86 to an action point can be lengthened. Then, since a large moment can be generated at the action point, the first displacement restricting portion 18 can be broken more easily.

本実施形態において、天板部８２は、一端部から他端部にわたって形成される２つの縁部１３４、１３６を有する。そして、第１取付部１２が離隔方向（上方向）に変位して天板部８２に当接する際に、取付突出部１１４が一方の縁部１３４に当接する。この構成によれば、車両の正面衝突時に一方の縁部１３４に力を集中させることができるため、第１変位規制部１８を効率良く破断させることができる。   In the present embodiment, the top plate portion 82 has two edge portions 134 and 136 formed from one end portion to the other end portion. Then, when the first attachment portion 12 is displaced in the separation direction (upward direction) and abuts against the top plate portion 82, the attachment protrusion 114 abuts against one edge portion 134. According to this configuration, since the force can be concentrated on one edge 134 during a frontal collision of the vehicle, the first displacement restricting portion 18 can be efficiently broken.

１０…防振装置 １２…第１取付部
１４…第２取付部 １６…連結弾性体
１８…第１変位規制部 ８０…第１緩衝部材
８２…天板部 ８４…第１側壁部
８６…第２側壁部 １１４…取付突出部
１１８…取付頭頂部 １２２…緩衝突出部
１２６…緩衝頭頂部 １２８…当接谷部
１３４、１３６…縁部 DESCRIPTION OF SYMBOLS 10 ... Vibration isolator 12 ... 1st attaching part 14 ... 2nd attaching part 16 ... Connection elastic body 18 ... 1st displacement control part 80 ... 1st buffer member 82 ... Top plate part 84 ... 1st side wall part 86 ... 2nd Side wall 114 ... Mounting protrusion 118 ... Mounting head part 122 ... Buffering protrusion part 126 ... Buffering head part 128 ... Contact valley part 134, 136 ... Edge

Claims (6)

動力源に連結される第１取付部と、
車体に連結される第２取付部と、
前記第１取付部と前記第２取付部とを連結する連結弾性体と、
前記第２取付部に固定され、前記第２取付部に対する前記第１取付部の離隔方向への変位を規制する変位規制部と、
前記変位規制部のうち前記第１取付部と正対する部位に設けられ、前記第１取付部が前記離隔方向に変位して前記変位規制部と当接する場合に発生する衝撃を緩衝する緩衝部材と、
を備え、前記車体と前記動力源との間に介在して前記動力源を支持すると共に、前記動力源から前記車体に伝達される振動を抑制する防振装置であって、
前記第１取付部は、前記緩衝部材側に突出する取付突出部を有し、
前記緩衝部材は、前記第１取付部側に突出する緩衝突出部を有し、
前記緩衝突出部が前記取付突出部に対してオフセットされ、
前記変位規制部は、前記第１取付部の前記離隔方向に配置される天板部と、前記天板部の一端部から前記第２取付部側に延在して前記第２取付部に固定される第１側壁部と、前記天板部の他端部から前記第２取付部側に延在して前記第２取付部に固定される第２側壁部とを有し、
前記緩衝部材は、前記天板部に設けられ、
前記天板部は、前記一端部から前記他端部にわたって形成される２つの縁部を有し、
前記第１取付部が前記離隔方向に変位して前記天板部に当接する際に、前記取付突出部が一方の前記縁部に当接する
ことを特徴とする防振装置。 A first attachment connected to a power source;
A second mounting portion coupled to the vehicle body;
A connecting elastic body for connecting the first mounting portion and the second mounting portion;
A displacement restricting portion fixed to the second attaching portion and restricting displacement of the first attaching portion with respect to the second attaching portion in the separation direction;
A buffer member that is provided in a portion of the displacement restricting portion that faces the first attaching portion, and cushions an impact that occurs when the first attaching portion is displaced in the separation direction and abuts against the displacement restricting portion; ,
A vibration isolator that supports the power source interposed between the vehicle body and the power source and suppresses vibrations transmitted from the power source to the vehicle body,
The first attachment portion has an attachment protrusion that protrudes toward the buffer member,
The buffer member has a buffer protrusion that protrudes toward the first attachment portion.
The buffer projection is offset with respect to the mounting projection ;
The displacement regulating portion extends from the one end portion of the top plate portion toward the second attachment portion and is fixed to the second attachment portion. A first side wall portion, and a second side wall portion that extends from the other end portion of the top plate portion to the second mounting portion side and is fixed to the second mounting portion,
The buffer member is provided on the top plate,
The top plate has two edges formed from the one end to the other end,
The anti-vibration device according to claim 1, wherein when the first attachment portion is displaced in the separation direction and comes into contact with the top plate portion, the attachment protrusion comes into contact with one of the edge portions . 請求項１に記載の防振装置において、
前記変位規制部からの前記緩衝突出部の突出量よりも、前記第１取付部からの前記取付突出部の突出量の方が小さい
ことを特徴とする防振装置。 The vibration isolator according to claim 1,
The anti-vibration device according to claim 1, wherein a protrusion amount of the mounting protrusion portion from the first attachment portion is smaller than a protrusion amount of the buffer protrusion portion from the displacement restricting portion. 請求項１に記載の防振装置において、
前記離隔方向から視て、前記緩衝突出部の頭頂部よりも、前記取付突出部の頭頂部の方が、前記天板部の中心に近い
ことを特徴とする防振装置。 The vibration isolator according to claim 1 ,
The anti-vibration device according to claim 1, wherein when viewed from the separation direction, the top of the mounting protrusion is closer to the center of the top plate than the top of the buffer protrusion. 動力源に連結される第１取付部と、
車体に連結される第２取付部と、
前記第１取付部と前記第２取付部とを連結する連結弾性体と、
前記第２取付部に固定され、前記第２取付部に対する前記第１取付部の離隔方向への変位を規制する変位規制部と、
前記変位規制部のうち前記第１取付部と正対する部位に設けられ、前記第１取付部が前記離隔方向に変位して前記変位規制部と当接する場合に発生する衝撃を緩衝する緩衝部材と、
を備え、前記車体と前記動力源との間に介在して前記動力源を支持すると共に、前記動力源から前記車体に伝達される振動を抑制する防振装置であって、
前記第１取付部は、前記緩衝部材側に突出する取付突出部を有し、
前記緩衝部材は、前記取付突出部と正対する当接谷部を有し、
前記変位規制部は、前記第１取付部の前記離隔方向に配置される天板部と、前記天板部の一端部から前記第２取付部側に延在して前記第２取付部に固定される第１側壁部と、前記天板部の他端部から前記第２取付部側に延在して前記第２取付部に固定される第２側壁部とを有し、
前記緩衝部材は、前記天板部に設けられ、
前記天板部は、前記一端部から前記他端部にわたって形成される２つの縁部を有し、
前記第１取付部が前記離隔方向に変位して前記天板部に当接する際に、前記取付突出部が一方の前記縁部に当接する
ことを特徴とする防振装置。 A first attachment connected to a power source;
A second mounting portion coupled to the vehicle body;
A connecting elastic body for connecting the first mounting portion and the second mounting portion;
A displacement restricting portion fixed to the second attaching portion and restricting displacement of the first attaching portion with respect to the second attaching portion in the separation direction;
A buffer member that is provided in a portion of the displacement restricting portion that faces the first attaching portion, and cushions an impact that occurs when the first attaching portion is displaced in the separation direction and abuts against the displacement restricting portion; ,
A vibration isolator that supports the power source interposed between the vehicle body and the power source and suppresses vibrations transmitted from the power source to the vehicle body,
The first attachment portion has an attachment protrusion that protrudes toward the buffer member,
The buffer member may have a said mounting protrusion directly facing abutment valley,
The displacement regulating portion extends from the one end portion of the top plate portion toward the second attachment portion and is fixed to the second attachment portion. A first side wall portion, and a second side wall portion that extends from the other end portion of the top plate portion to the second mounting portion side and is fixed to the second mounting portion,
The buffer member is provided on the top plate,
The top plate has two edges formed from the one end to the other end,
The anti-vibration device according to claim 1, wherein when the first attachment portion is displaced in the separation direction and comes into contact with the top plate portion, the attachment protrusion comes into contact with one of the edge portions . 請求項４に記載の防振装置において、
前記緩衝部材は、前記当接谷部を挟んで前記第１取付部側に突出する緩衝突出部を有し、
前記変位規制部からの前記緩衝突出部の突出量よりも、前記第１取付部からの前記取付突出部の突出量の方が小さい
ことを特徴とする防振装置。 The vibration isolator according to claim 4 ,
The buffer member has a buffer protrusion that protrudes toward the first mounting portion across the contact valley portion,
The anti-vibration device according to claim 1, wherein a protrusion amount of the mounting protrusion portion from the first attachment portion is smaller than a protrusion amount of the buffer protrusion portion from the displacement restricting portion. 請求項５に記載の防振装置において、
前記緩衝突出部よりも前記当接谷部の方が前記天板部の中心に近い
ことを特徴とする防振装置。 The vibration isolator according to claim 5 ,
The vibration isolator according to claim 1, wherein the contact valley portion is closer to the center of the top plate portion than the buffer protrusion portion.
JP2015189203A 2015-09-28 2015-09-28 Vibration isolator Expired - Fee Related JP6473063B2 (en)

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