JP2018162824A - Vibration isolator - Google Patents

Vibration isolator Download PDF

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JP2018162824A
JP2018162824A JP2017059824A JP2017059824A JP2018162824A JP 2018162824 A JP2018162824 A JP 2018162824A JP 2017059824 A JP2017059824 A JP 2017059824A JP 2017059824 A JP2017059824 A JP 2017059824A JP 2018162824 A JP2018162824 A JP 2018162824A
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main body
bracket
insertion direction
vibration
guided
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JP6808554B2 (en
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秀寿 伊藤
Hidehisa Ito
秀寿 伊藤
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Bridgestone Corp
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Bridgestone Corp
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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
    • F16F2226/00—Manufacturing; Treatments
    • F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
    • F16F2226/041—Clipping

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  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a vibration isolator capable of effectively suppressing slipping-off of a main body portion from a bracket.SOLUTION: A vibration isolator includes a bracket 200 mounted on one of a vibration generating portion and a vibration receiving portion, and a main body portion 2 having a first mounting portion 10 mounted on the other, a second mounting portion 20 mounted on the bracket, and an elastic body 30 for connecting the first mounting portion and the second mounting portion 200, the main body portion 2 is inserted into an insertion space S, the bracket 200 has a guide portion 250 for guiding the main body portion 2, the second mounting portion of the main body portion 2 has a guided portion 21 made of resin, the guided portion 21 of the main body portion 2 has a main body engagement portion 42a at a part of a depth side in an insertion direction ID, and the guide portion 250 of the bracket 200 has a bracket engagement portion 254 engaged with the main body engagement portion 42 so that the main body portion 2 is prevented from slipping off in a direction opposite to the insertion direction ID, from the insertion space S.SELECTED DRAWING: Figure 4

Description

この発明は、例えば自動車のエンジン等の振動発生部を車体等の振動受部にマウントする際に用いられる、防振装置に関するものである。   The present invention relates to a vibration isolator that is used, for example, when a vibration generating unit such as an automobile engine is mounted on a vibration receiving unit such as a vehicle body.

従来の防振装置として、振動発生部および振動受部のうちの何れか一方に取り付けられるブラケットと、振動発生部および振動受部のうちの何れか他方に取り付けられる取付部に弾性体が接合された本体部と、を備え、弾性体に、取付部の鉛直方向一方側に配設されていると共にブラケットに向けて突出した伸縮可能な脚部と、脚部の先端に設けられた嵌合部と、が備えられ、ブラケットにおける、本体部のブラケットへの挿入方向の手前側の端部には、抜止部が設けられたものがある（例えば、特許文献１）。   As a conventional vibration isolator, an elastic body is joined to a bracket attached to one of the vibration generating part and the vibration receiving part and an attaching part attached to either the vibration generating part or the vibration receiving part. An elastic body, an elastic leg disposed on one side of the mounting portion in the vertical direction and projecting toward the bracket, and a fitting portion provided at the tip of the leg There is a bracket provided with a retaining portion at an end of the bracket on the near side in the insertion direction of the main body in the bracket (for example, Patent Document 1).

特開2011-214634号公報JP 2011-214634

しかしながら、近年の防振装置においては、本体部のブラケットへの挿入方向とは逆方向に大きな入力が入った際等に、本体部がブラケットから抜け出るのをより効果的に抑制できるような機構が求められており、上述したような防振装置には改善の余地があった。   However, in recent anti-vibration devices, there is a mechanism that can more effectively suppress the main body from coming out of the bracket when a large input is input in the direction opposite to the direction in which the main body is inserted into the bracket. There has been room for improvement in the vibration isolator as described above.

この発明は、上述した課題を解決するためのものであり、本体部がブラケットから抜け出るのをより効果的に抑制できる、防振装置を提供することを目的とするものである。   An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a vibration isolator that can more effectively suppress the main body from coming out of the bracket.

本発明の防振装置は、振動発生部および振動受部のいずれか一方に取り付けられるブラケットと、前記振動発生部および振動受部のいずれか他方に取り付けられる第１取付部、前記ブラケットに取り付けられた第２取付部、及び、前記第１取付部と前記第２取付部とを連結する弾性体を有する、本体部と、を備え、前記本体部は、前記ブラケットにより区画された挿入空間内に挿入されており、前記ブラケットは、前記挿入時に前記本体部が所定の挿入方向に挿入されるように前記本体部を案内するガイド部を有し、前記本体部の前記第２取付部は、前記挿入時に前記ガイド部によって案内される樹脂製の被ガイド部を有し、前記本体部の前記被ガイド部は、前記被ガイド部における前記挿入方向の奥側の部分に、本体係合部を有し、前記ブラケットの前記ガイド部は、前記本体係合部と係合し、これにより前記本体部が前記挿入空間から前記挿入方向とは逆方向に抜け出るのを抑制する、ブラケット係合部を、前記ガイド部における前記挿入方向の奥側の部分に有している。
本発明の防振装置によれば、本体部がブラケットから抜け出るのをより効果的に抑制できる。 The vibration isolator of the present invention is attached to the bracket that is attached to one of the vibration generating part and the vibration receiving part, the first attachment part that is attached to one of the vibration generating part and the vibration receiving part, and the bracket. A second mounting portion, and a main body portion having an elastic body that connects the first mounting portion and the second mounting portion, and the main body portion is in an insertion space defined by the bracket. The bracket has a guide portion that guides the main body portion so that the main body portion is inserted in a predetermined insertion direction during the insertion, and the second attachment portion of the main body portion includes A guide portion made of resin guided by the guide portion at the time of insertion, and the guided portion of the main body portion has a main body engaging portion in a portion of the guided portion on the back side in the insertion direction. And The guide portion of the bracket engages with the main body engaging portion, thereby suppressing the main body portion from slipping out of the insertion space in the direction opposite to the insertion direction. At the back side in the insertion direction.
According to the vibration isolator of the present invention, it is possible to more effectively suppress the main body portion from coming out of the bracket.

本発明の防振装置において、前記ブラケットは、前記第２取付部の前記挿入方向の奥側に位置し、前記第２取付部のさらなる前記挿入方向への移動を規制する、背壁部を有し、前記背壁部には、前記本体係合部と対向する位置に貫通孔が設けられていると、好適である。
この構成によれば、本体部の挿入方向でのブラケットからの抜け止めを効果的に抑制しつつ、本体部がブラケットにしっかりと挿入されていることを目視で確認することが可能となる。 In the vibration isolator of the present invention, the bracket has a back wall portion that is located on the back side in the insertion direction of the second attachment portion and restricts the further movement of the second attachment portion in the insertion direction. And it is suitable when the through-hole is provided in the said back wall part in the position facing the said main body engaging part.
According to this configuration, it is possible to visually confirm that the main body is firmly inserted into the bracket while effectively preventing the main body from being detached from the bracket in the insertion direction.

本発明の防振装置において、前記本体係合部は、前記挿入方向の手前側を向く本体係合面を有しており、前記本体係合面は、前記本体部の中心軸線に垂直な仮想平面に沿う断面において、前記挿入方向に垂直に延在しているか、または、前記本体部の中心軸線及び前記挿入方向を含む仮想平面に向かうにつれて徐々に前記挿入方向の奥側へ向かうように延在していると、好適である。
この構成によれば、本体部がブラケットから抜け出るのをさらに効果的に抑制できる。 In the vibration isolator of the present invention, the main body engaging portion has a main body engaging surface that faces the front side in the insertion direction, and the main body engaging surface is an imaginary perpendicular to the central axis of the main body portion. In a cross section along the plane, it extends perpendicularly to the insertion direction, or extends gradually toward the back side in the insertion direction toward the virtual plane including the central axis of the main body and the insertion direction. If present, it is preferable.
According to this structure, it can suppress more effectively that a main-body part slips out from a bracket.

この発明によれば、本体部がブラケットから抜け出るのをより効果的に抑制できる、防振装置を提供できる。   According to this invention, the vibration isolator which can suppress more effectively that a main-body part slips out from a bracket can be provided.

本発明の防振装置の一実施形態を、本体部がブラケットへ挿入される側から観たときの様子を示す、正面図である。It is a front view which shows a mode when one Embodiment of the vibration isolator of this invention is seen from the side by which a main-body part is inserted in a bracket. 図１の防振装置を、一部切り欠き断面により示す、斜視図である。It is a perspective view which shows the vibration isolator of FIG. 1 by a partially notched cross section. 図１の防振装置を、本体部がブラケットへ挿入される側とは逆側から観たときの様子を示す、背面図である。It is a rear view which shows a mode when the vibration isolator of FIG. 1 is seen from the opposite side to the side by which a main-body part is inserted in a bracket. 図１の防振装置において、本体部がブラケットに挿入されるときの様子を示す、分解斜視図である。In the vibration isolator of FIG. 1, it is a disassembled perspective view which shows a mode when a main-body part is inserted in a bracket. 図１のブラケットを、本体部がブラケットへ挿入される側から観たときの様子を示す、正面図である。It is a front view which shows a mode when the bracket of FIG. 1 is seen from the side by which a main-body part is inserted in a bracket. 図１の本体部を示す斜視図である。It is a perspective view which shows the main-body part of FIG. 図７（ａ）は、図１のＡ−Ａ線に沿う断面において、本体部がブラケットに挿入される前の様子を示す、分解断面図であり、図７（ｂ）は、図１のＡ−Ａ線に沿う断面において、本体部がブラケットに挿入された後の様子を示す、断面図である。7A is an exploded cross-sectional view showing a state before the main body portion is inserted into the bracket in the cross section taken along the line AA in FIG. 1, and FIG. 7B is a cross-sectional view of FIG. It is sectional drawing which shows a mode after a main-body part is inserted in the bracket in the cross section along the -A line. 図１の防振装置の一変形例を示す、図７（ｂ）と同様の断面図である。It is sectional drawing similar to FIG.7 (b) which shows the modification of the vibration isolator of FIG.

以下に、図面を参照しつつ、この発明に係る防振装置の実施形態を例示説明する。   Hereinafter, embodiments of the vibration isolator according to the present invention will be described with reference to the drawings.

図１〜図７は、本発明の一実施形態に係る防振装置１を示している。
本実施形態の防振装置１は、図示しない車両における振動発生部であるエンジンを、振動受部である車体へ支持する、液封式のエンジンマウントとして構成されており、エンジンから車体に伝達される振動を低減させるための装置である。
図１〜図３に示すように、防振装置１は、振動発生部および振動受部のいずれか一方に取り付けられるブラケット２００と、本体部２とを、備えている。本体部２は、振動発生部および振動受部のいずれか他方に取り付けられる第１取付部１０と、ブラケット２００に取り付けられた第２取付部２０と、第１取付部１０と第２取付部２０とを弾性的に連結する弾性体３０とを、有している。
本例では、ブラケット２００は、車体ブラケットであり、取付孔２２０にボルト等の締結部材が挿通されることにより、車体（振動受部）に取り付けられる。また、本例において、第１取付部１０は、エンジン（振動発生部）に取り付けられるエンジンブラケット１００（図１及び図２）と連結される。車体ブラケット２００は、例えばアルミニウム等の金属材料から形成される。エンジンブラケット１００は、図示しない取付孔にボルト等の締結部材が挿通されることにより、エンジンに取り付けられる。 1-7 has shown the vibration isolator 1 which concerns on one Embodiment of this invention.
The vibration isolator 1 according to the present embodiment is configured as a liquid-sealed engine mount that supports an engine that is a vibration generating unit in a vehicle (not shown) to a vehicle body that is a vibration receiving unit, and is transmitted from the engine to the vehicle body. This is a device for reducing vibration.
As shown in FIGS. 1 to 3, the vibration isolator 1 includes a bracket 200 that is attached to one of a vibration generating unit and a vibration receiving unit, and a main body unit 2. The main body 2 includes a first attachment portion 10 attached to either the vibration generating portion or the vibration receiving portion, a second attachment portion 20 attached to the bracket 200, a first attachment portion 10, and a second attachment portion 20. And an elastic body 30 that elastically connects the two.
In this example, the bracket 200 is a vehicle body bracket, and is attached to the vehicle body (vibration receiving portion) by inserting a fastening member such as a bolt into the attachment hole 220. Moreover, in this example, the 1st attaching part 10 is connected with the engine bracket 100 (FIG.1 and FIG.2) attached to an engine (vibration generating part). The body bracket 200 is made of a metal material such as aluminum. The engine bracket 100 is attached to the engine by inserting a fastening member such as a bolt through an attachment hole (not shown).

以下では、便宜上、防振装置１に固定されたＸＹＺ直交座標系を用いて説明する。Ｚ軸は、本体部２の中心軸線Ｃに沿う方向に延びている。本体部２の中心軸線Ｃは、略円錐台の外表面を有する弾性体３０の中心軸線であるものとする。Ｙ軸は、環状に形成された第１取付部材１０の軸線方向、すなわち、後述する第１取付部材１０の圧入孔１１の軸線Ｏ（以下、単に「第１取付部１０の軸線Ｏ」ともいう。）に沿う方向に、延びている。本例では、第１取付部材１０の軸線Ｏが、本体部２の中心軸線Ｃと垂直に交差している。Ｘ軸は、Ｚ軸及びＹ軸に垂直な方向に延びている。
本例の防振装置１が車両に設置された状態においては、Ｚ軸方向が主要入力方向である車両上下方向となり、下方向（−Ｚ方向）がバウンド方向、つまり静荷重（支持荷重）が入力される方向であり、上方向（+Ｚ方向）がリバウンド方向、つまり静荷重の入力方向の反対方向である。本明細書では、−Ｚ方向を「下方向」、+Ｚ方向を「上方向」ともいう。また、本例の防振装置１が車両に設置された状態においては、第１取付部１０の軸線方向（Ｙ軸方向）が車両左右方向であり、第１取付部１０の軸線方向（Ｙ軸方向）に直交する水平方向（Ｘ軸方向）が車両前後方向である。 Below, for convenience, it demonstrates using the XYZ rectangular coordinate system fixed to the vibration isolator 1. FIG. The Z axis extends in a direction along the central axis C of the main body 2. The central axis C of the main body 2 is assumed to be the central axis of the elastic body 30 having an outer surface of a substantially truncated cone. The Y-axis is an axial direction of the first mounting member 10 formed in an annular shape, that is, an axis O of a press-fitting hole 11 of the first mounting member 10 (to be described later) (hereinafter also simply referred to as “axis O of the first mounting portion 10”). .) Extending in the direction along. In this example, the axis O of the first mounting member 10 intersects the center axis C of the main body 2 perpendicularly. The X axis extends in a direction perpendicular to the Z axis and the Y axis.
In the state in which the vibration isolator 1 of this example is installed in the vehicle, the Z-axis direction is the vehicle vertical direction, which is the main input direction, and the downward direction (−Z direction) is the bounce direction, that is, the static load (support load) is The input direction, and the upward direction (+ Z direction) is the rebound direction, that is, the direction opposite to the static load input direction. In this specification, the −Z direction is also referred to as “downward”, and the + Z direction is also referred to as “upward”. Further, in the state where the vibration isolator 1 of the present example is installed in the vehicle, the axial direction (Y-axis direction) of the first mounting portion 10 is the vehicle left-right direction, and the axial direction (Y-axis) of the first mounting portion 10 The horizontal direction (X-axis direction) perpendicular to the direction is the vehicle front-rear direction.

図１〜図５に示すように、車体ブラケット２００は、Ｘ軸方向に互いに対向するとともにそれぞれ上下に延びる一対の縦壁部２６０と、一対の縦壁部２６０の上端部どうしを連結する上壁部２７０と、一対の縦壁部２６０の下端部どうしを連結する下壁部２８０と、一対の縦壁部２６０の+Ｙ側の端部どうしを連結する背壁部２９０とを、有している。車体ブラケット２００は、一対の縦壁部２６０、上壁部２７０、下壁部２８０、及び背壁部２９０により、−Ｙ側が開放した挿入空間Ｓを内部に区画している。
一対の縦壁部２６０は、互いに対向する側（挿入空間Ｓ側）の面の下側部分に、互いに対向する側（挿入空間Ｓ側）が開放されているとともにそれぞれＹ軸方向にほぼ沿って延びる溝状のガイド部２５０を有している。ガイド部２５０は、ガイド部２５０の上部にあり下側を向く上ガイド面２５１と、ガイド部２５０の下部にあり上側を向く下ガイド面２５２と、上ガイド面２５１及び下ガイド面２５２のＸ軸方向外側の端部どうしを連結し略上下に延びるサイドガイド面２５３とを、有している。ガイド部２５０は、本体部２が車体ブラケット２００の挿入空間Ｓ内に挿入される時に本体部２が所定の挿入方向ＩＤに挿入されるように、本体部２を案内する役割を持つ。
本例では、本体部２が車体ブラケット２００に挿入される「所定の挿入方向ＩＤ」は、第１取付部１０の軸線方向に平行な、+Ｙ方向である。また、本例では、この挿入方向ＩＤは、振動発生部側（エンジン側）に向かう方向でもある。
なお、本明細書において、「Ｘ軸方向外側」とは、本体部２の中心軸線Ｃ及び挿入方向ＩＤを含む仮想平面ＶＰから遠い側を指す。一方、「Ｘ軸方向内側」とは、本体部２の中心軸線Ｃ及び挿入方向ＩＤを含む仮想平面ＶＰに近い側を指す。
背壁部２９０は、本体部２の第１取付部１０とＹ軸方向に対向する位置に、背壁部２９０を貫通する窓２１０を有している。また、背壁部２９０は、窓２１０の下側にも別の窓２１１を有している。
下壁部２８０は、下壁部２８０を貫通する開口２４０を有している。 As shown in FIGS. 1 to 5, the body bracket 200 includes a pair of vertical wall portions 260 that face each other in the X-axis direction and extend vertically, and an upper wall that connects upper end portions of the pair of vertical wall portions 260 to each other. Part 270, lower wall part 280 that connects the lower end parts of the pair of vertical wall parts 260, and back wall part 290 that connects the end parts on the + Y side of the pair of vertical wall parts 260, Yes. The vehicle body bracket 200 divides an insertion space S, which is open on the −Y side, by a pair of vertical wall portions 260, an upper wall portion 270, a lower wall portion 280, and a back wall portion 290.
The pair of vertical wall portions 260 are open along opposite sides (insertion space S side) at the lower portion of the surfaces facing each other (insertion space S side) and substantially along the Y-axis direction. It has a groove-shaped guide portion 250 that extends. The guide portion 250 is an upper guide surface 251 that is above the guide portion 250 and faces downward, a lower guide surface 252 that is below the guide portion 250 and faces upward, and the X axis of the upper guide surface 251 and the lower guide surface 252 It has side guide surfaces 253 that connect ends on the outside in the direction and extend substantially vertically. The guide part 250 has a role of guiding the main body part 2 so that the main body part 2 is inserted in a predetermined insertion direction ID when the main body part 2 is inserted into the insertion space S of the vehicle body bracket 200.
In this example, the “predetermined insertion direction ID” in which the main body 2 is inserted into the vehicle body bracket 200 is the + Y direction parallel to the axial direction of the first mounting portion 10. In this example, the insertion direction ID is also a direction toward the vibration generating unit side (engine side).
In this specification, “outside in the X-axis direction” refers to a side far from the virtual plane VP including the central axis C of the main body 2 and the insertion direction ID. On the other hand, “X-axis direction inner side” refers to a side close to the virtual plane VP including the central axis C of the main body 2 and the insertion direction ID.
The back wall portion 290 has a window 210 that penetrates the back wall portion 290 at a position facing the first mounting portion 10 of the main body portion 2 in the Y-axis direction. The back wall portion 290 also has another window 211 on the lower side of the window 210.
The lower wall portion 280 has an opening 240 that penetrates the lower wall portion 280.

図４に示すように、本体部２が車体ブラケット２００の挿入空間Ｓ内に挿入されると、本体部２の第２取付部２０が車体ブラケット２００のガイド部２５０に挿入されて固定され、これにより、本体部２が車体ブラケット２００に組み付けられる。この際、ボルト締結等の作業が不要であるので、本体部２を車体ブラケット２００に組み付ける作業が簡単となる。
そして、本例において、本体部２は、車体ブラケット２００に組み付けられた状態で、エンジンブラケット１００の圧入部１１０が、挿入方向ＩＤとは逆方向（−Ｙ方向）に、車体ブラケット２００の窓２１０を通って、本体部２の第１取付部１０の圧入孔１１へ圧入されることで、第１取付部１０がエンジンブラケット１００と連結される。 As shown in FIG. 4, when the main body 2 is inserted into the insertion space S of the vehicle body bracket 200, the second mounting portion 20 of the main body 2 is inserted and fixed to the guide portion 250 of the vehicle body bracket 200. Thus, the main body 2 is assembled to the body bracket 200. At this time, since work such as bolt fastening is not required, the work of assembling the main body 2 to the vehicle body bracket 200 is simplified.
In this example, the main body 2 is assembled to the body bracket 200, and the press-fit portion 110 of the engine bracket 100 is in the direction opposite to the insertion direction ID (the −Y direction). The first mounting portion 10 is connected to the engine bracket 100 by being pressed into the press-fitting hole 11 of the first mounting portion 10 of the main body portion 2.

弾性体３０は、例えば加硫ゴム材料によって形成されている。弾性体３０は、防振装置１に入力される振動に応じて第１取付部１０と第２取付部２０とが互いに相対変位されると、弾性変形することにより、振動を吸収および減衰する役割を持つ。図２に示すように、弾性体３０の下面は、略ベル状に窪んでいる。   The elastic body 30 is made of, for example, a vulcanized rubber material. The elastic body 30 absorbs and attenuates vibrations by elastically deforming when the first mounting part 10 and the second mounting part 20 are displaced relative to each other in accordance with vibrations input to the vibration isolator 1. have. As shown in FIG. 2, the lower surface of the elastic body 30 is recessed in a substantially bell shape.

図２に示すように、第１取付部１０は、弾性体３０の上側に連結され、環状に構成されている。第１取付部１０は、弾性体３０と同材料からなり弾性体３０と一体に構成された環状弾性部１２と、環状弾性部１２内に埋め込まれて環状弾性部１２の全周にわたって延在する環状補強部材１３とを、有している。環状補強部材１３は、環状弾性部１２を構成する材料よりも硬い材料（例えば金属材料）により形成されている。第１取付部１０には、Ｙ軸方向に第１取付部１０を貫通する圧入孔１１が備えられている。圧入孔１１は、第１取付部１０の内周面によって、ひいては環状弾性部１２の内周面によって、区画されている。圧入孔１１の軸線Ｏに垂直な平面（ＸＺ平面）に沿う断面において、圧入孔１１は、エンジンブラケット１００の圧入部１１０とほぼ同じ形状（本例では長方形状）であり、圧入部１１０の大きさよりもやや小さく形成されている。第１取付部１０は、エンジンブラケット１００の圧入部１１０が圧入孔１１に圧入されたとき、環状補強部材１３による拡径抑制作用と、環状補強部材１３よりも内周側で圧縮された環状弾性部１２と圧入部１１０との間に作用する摩擦力とによって、エンジンブラケット１００が第１取付部１０から抜け出るのが抑制される。   As shown in FIG. 2, the first mounting portion 10 is connected to the upper side of the elastic body 30 and configured in an annular shape. The first attachment portion 10 is made of the same material as the elastic body 30 and is formed integrally with the elastic body 30. The first attachment portion 10 is embedded in the annular elastic portion 12 and extends over the entire circumference of the annular elastic portion 12. And an annular reinforcing member 13. The annular reinforcing member 13 is formed of a material (for example, a metal material) harder than the material constituting the annular elastic portion 12. The first attachment portion 10 is provided with a press-fit hole 11 that penetrates the first attachment portion 10 in the Y-axis direction. The press-fitting hole 11 is partitioned by the inner peripheral surface of the first mounting portion 10 and by the inner peripheral surface of the annular elastic portion 12. In the cross section along the plane (XZ plane) perpendicular to the axis O of the press-fitting hole 11, the press-fitting hole 11 has almost the same shape (rectangular shape in this example) as the press-fitting part 110 of the engine bracket 100. It is formed slightly smaller than the size. The first mounting portion 10 includes an annular elasticity that is suppressed by the annular reinforcement member 13 when the press-fit portion 110 of the engine bracket 100 is press-fitted into the press-fit hole 11, and an annular elasticity that is compressed on the inner peripheral side of the annular reinforcement member 13. The frictional force acting between the portion 12 and the press-fit portion 110 prevents the engine bracket 100 from coming out of the first mounting portion 10.

図１、図２、図４及び図６に示すように、第２取付部２０は、弾性体３０の下側に連結されている。本例において、第２取付部２０は、筒状の外筒４０と、外筒４０の上側に配置されて弾性体３０と同材料からなり弾性体３０と一体に構成された弾性シート部５０と、外筒４０の下側に配置された環状の底板６０とを、有している。底板６０は、例えばゴム等の弾性材料で構成されている。本例において、外筒４０は、弾性シート部５０及び底板６０よりも硬い材料、例えばプラスチック等の樹脂材料で、構成されている。
第２取付部２０は、車体ブラケット２００のガイド部２５０に挿入されたとき、上側では弾性シート部５０が外筒４０と上ガイド面２５１との間で圧縮され、下側では底板６０が外筒４０と下ガイド面２５２との間で圧縮される。そして、これにより第２取付部２０の上側と下側とでガイド部２５０との間に作用する摩擦力によって、第２取付部２０がガイド部２５０から抜け出るのが抑制される。 As shown in FIGS. 1, 2, 4, and 6, the second mounting portion 20 is connected to the lower side of the elastic body 30. In this example, the second mounting portion 20 includes a cylindrical outer cylinder 40, and an elastic sheet portion 50 that is disposed on the upper side of the outer cylinder 40 and is made of the same material as the elastic body 30 and configured integrally with the elastic body 30. And an annular bottom plate 60 disposed on the lower side of the outer cylinder 40. The bottom plate 60 is made of an elastic material such as rubber. In this example, the outer cylinder 40 is made of a material harder than the elastic sheet portion 50 and the bottom plate 60, for example, a resin material such as plastic.
When the second mounting portion 20 is inserted into the guide portion 250 of the vehicle body bracket 200, the elastic sheet portion 50 is compressed between the outer cylinder 40 and the upper guide surface 251 on the upper side, and the bottom plate 60 is positioned on the outer cylinder on the lower side. 40 and the lower guide surface 252 are compressed. As a result, the second mounting portion 20 is prevented from coming out of the guide portion 250 due to the frictional force acting between the guide portion 250 on the upper side and the lower side of the second mounting portion 20.

図２に示すように、本例において、第２取付部２０及び弾性体３０の内部には、液室８０が形成されている。外筒４０の内周面には、弾性体３０と同材料からなり弾性体３０と一体に構成されたシール部９０が加硫接着されている。外筒４０と底板６０は、それらの外周部で、ダイヤフラム７０の外周端部を狭持している。ダイヤフラム７０は、第２取付部２０の底板６０の開口６３と車体ブラケット２００の下壁部２８０の開口２４０との内周側で、主に上下に変形自在となるようにされている。弾性体３０の下面、外筒４０の内周面（より具体的にはシール部９０の内周面）、及びダイヤフラム７０の上面によって、液室８０が区画されている。液室８０には、エチレングリコール、水、シリコーンオイル等の非圧縮性の液体が封入されている。図示は省略するが、液室８０は、外筒４０の内周側（より具体的にはシール部９０の内周側）に配置された仕切り部材によって、弾性体３０を隔壁の一部とする主液室と、ダイヤフラム７０を隔壁の一部とする副液室とに、区画されている。主液室及び副液室は、仕切り部材に形成されたオリフィスを介して連結されている。オリフィスは、液体が流通することで液柱共振を生じさせる構成となっている。これにより、防振装置１に振動が入力されるとき、液室８０内の液体が主液室と副液室との間でオリフィスを通って流通し、この流通時に生じる液柱共振により、振動が吸収および減衰される。   As shown in FIG. 2, in this example, a liquid chamber 80 is formed inside the second mounting portion 20 and the elastic body 30. A seal portion 90 made of the same material as the elastic body 30 and configured integrally with the elastic body 30 is vulcanized and bonded to the inner peripheral surface of the outer cylinder 40. The outer cylinder 40 and the bottom plate 60 sandwich the outer peripheral end portion of the diaphragm 70 at their outer peripheral portions. The diaphragm 70 is mainly deformable in the vertical direction on the inner peripheral side of the opening 63 of the bottom plate 60 of the second mounting portion 20 and the opening 240 of the lower wall portion 280 of the vehicle body bracket 200. A liquid chamber 80 is defined by the lower surface of the elastic body 30, the inner peripheral surface of the outer cylinder 40 (more specifically, the inner peripheral surface of the seal portion 90), and the upper surface of the diaphragm 70. The liquid chamber 80 is filled with an incompressible liquid such as ethylene glycol, water, or silicone oil. Although not shown, the liquid chamber 80 includes the elastic body 30 as a part of the partition wall by a partition member disposed on the inner peripheral side of the outer cylinder 40 (more specifically, the inner peripheral side of the seal portion 90). It is divided into a main liquid chamber and a sub liquid chamber whose diaphragm 70 is a part of the partition wall. The main liquid chamber and the sub liquid chamber are connected via an orifice formed in the partition member. The orifice is configured to cause liquid column resonance when the liquid flows. As a result, when vibration is input to the vibration isolator 1, the liquid in the liquid chamber 80 flows through the orifice between the main liquid chamber and the sub liquid chamber, and vibration is generated by liquid column resonance that occurs during this flow. Is absorbed and attenuated.

図４及び図６に示すように、本体部２の第２取付部２０のＸ軸方向外側の端部は、車体ブラケット２００に挿入されるときにガイド部２５０によって案内される、被ガイド部２１を構成している。第２取付部２０の被ガイド部２１は、弾性シート部５０のＸ軸方向外側の端部からなる被ガイド部５１と、外筒４０のＸ軸方向外側の端部からなる被ガイド部４１と、底板６０のＸ軸方向外側の端部からなる被ガイド部６１とを、有している。
外筒４０の被ガイド部４１は、被ガイド部２１における挿入方向ＩＤ（+Ｙ方向）の奥側の部分（ひいては、被ガイド部４１における挿入方向ＩＤの奥側の部分）に、Ｘ軸方向外側に突出した突起状の本体係合部４２を有している。被ガイド部２１（又は被ガイド部４１）における「挿入方向ＩＤ（+Ｙ方向）の奥側の部分」とは、被ガイド部２１（又は被ガイド部４１）のうち、その挿入方向ＩＤの奥側の端部から、被ガイド部２１（又は被ガイド部４１）の挿入方向ＩＤ全長の、例えば０〜５０％の長さだけ、挿入方向ＩＤの手前側に離れた部分を指す。本例では、本体係合部４２は、被ガイド部２１における挿入方向ＩＤの奥側の端部（ひいては、被ガイド部４１における挿入方向ＩＤの奥側の端部）に、配置されている。
一方、図４、図５及び図７に示すように、車体ブラケット２００のガイド部２５０のサイドガイド面２５３は、ガイド部２５０における挿入方向ＩＤ（+Ｙ方向）の奥側の部分（ひいては、サイドガイド面２５３における挿入方向ＩＤ（+Ｙ方向）の奥側の部分）に、Ｘ軸方向外側に窪んだ窪み状のブラケット係合部２５４を有している。ガイド部２５０（又はサイドガイド面２５３）における「挿入方向ＩＤ（+Ｙ方向）の奥側の部分」とは、ガイド部２５０（又はサイドガイド面２５３）のうち、その挿入方向ＩＤの奥側の端部から、ガイド部２５０（又はサイドガイド面２５３）の挿入方向ＩＤ全長の、例えば０〜５０％の長さだけ、挿入方向ＩＤの手前側に離れた部分を指す。本例では、ブラケット係合部２５４は、ガイド部２５０における挿入方向ＩＤ（+Ｙ方向）の奥側の端部（ひいては、サイドガイド面２５３における挿入方向ＩＤ（+Ｙ方向）の奥側の端部）に、配置されている。ブラケット係合部２５４は、本体部２が車体ブラケット２００に挿入された状態での本体係合部４２と同じ上下方向の高さ位置（本例では、サイドガイド面２５３の上側部分）に、配置されている。 As shown in FIGS. 4 and 6, the end portion on the outer side in the X-axis direction of the second mounting portion 20 of the main body portion 2 is guided by the guide portion 250 when inserted into the vehicle body bracket 200. Is configured. The guided portion 21 of the second mounting portion 20 includes a guided portion 51 that is an end portion on the outer side in the X-axis direction of the elastic sheet portion 50, and a guided portion 41 that is an end portion on the outer side in the X-axis direction of the outer tube 40. And a guided portion 61 formed of an end portion on the outer side in the X-axis direction of the bottom plate 60.
The guided portion 41 of the outer cylinder 40 is arranged in the X-axis direction on a portion on the back side in the insertion direction ID (+ Y direction) in the guided portion 21 (and thus a portion on the back side in the insertion direction ID in the guided portion 41). It has a protruding main body engaging portion 42 protruding outward. The “back portion of the insertion direction ID (+ Y direction)” in the guided portion 21 (or the guided portion 41) refers to the depth of the insertion direction ID in the guided portion 21 (or the guided portion 41). This refers to a portion away from the end of the insertion portion ID by a length of, for example, 0 to 50% of the entire insertion direction ID of the guided portion 21 (or the guided portion 41). In this example, the main body engaging portion 42 is disposed at an end portion on the far side of the insertion direction ID in the guided portion 21 (as a result, an end portion on the far side of the insertion direction ID in the guided portion 41).
On the other hand, as shown in FIGS. 4, 5, and 7, the side guide surface 253 of the guide portion 250 of the vehicle body bracket 200 is a portion on the back side in the insertion direction ID (+ Y direction) in the guide portion 250. A recessed bracket engaging portion 254 that is recessed outward in the X-axis direction is provided on the back surface of the guide surface 253 in the insertion direction ID (+ Y direction). The “inner side of the insertion direction ID (+ Y direction)” in the guide part 250 (or the side guide surface 253) means the back side of the insertion direction ID in the guide part 250 (or the side guide surface 253). The distance from the end portion to the front side of the insertion direction ID by, for example, 0 to 50% of the total length of the insertion direction ID of the guide portion 250 (or the side guide surface 253) is indicated. In this example, the bracket engaging portion 254 is an end portion on the back side in the insertion direction ID (+ Y direction) in the guide portion 250 (as a result, an end on the back side in the insertion direction ID (+ Y direction) in the side guide surface 253). Part). The bracket engaging portion 254 is disposed at the same vertical position as the main body engaging portion 42 in the state where the main body portion 2 is inserted into the vehicle body bracket 200 (in this example, the upper portion of the side guide surface 253). Has been.

本体係合部４２とブラケット係合部２５４は、本体部２が車体ブラケット２００の挿入空間Ｓの奥まで挿入されると、互いに係合するように構成されている。このような機械的機構により、本体部２が挿入空間Ｓから挿入方向ＩＤとは逆方向（−Ｙ方向）に抜け出るのが抑制される。
より具体的には、図７（ａ）、（ｂ）に示すように、ＸＹ平面に沿う断面を観たときに、サイドガイド面２５３は、本体部２が車体ブラケット２００に挿入された状態での本体係合部４２と同じ上下方向の高さ位置（本例では、サイドガイド面２５３の上側部分）において、挿入方向ＩＤの奥側へ向かうにつれて徐々にＸ軸方向内側へ突出するような、テーパ状に形成されている。そして、本体部２が車体ブラケット２００に挿入される際、外筒４０の被ガイド部４１は、挿入方向ＩＤの奥側へ移動するにつれて、サイドガイド面２５３によってＸ軸方向内側へ押されながら、Ｘ軸方向内側への弾性変形が徐々に進行する。そして、本体係合部４２がブラケット係合部２５４に到達すると、被ガイド部４１がＸ軸方向外側へと弾性的に復元し、本体係合部４２がブラケット係合部２５４に入り込んで係合する。このとき、本体係合部４２における挿入方向ＩＤの手前側（−Ｙ側）を向く本体係合面４２ａが、ブラケット係合部２５４における挿入方向ＩＤの奥側（+Ｙ側）を向くブラケット係合面２５４ａと対向する。これにより、例えば挿入方向ＩＤとは逆方向（−Ｙ方向）の入力が入ったとき等、第２取付部２０が車体ブラケット２００から挿入方向ＩＤとは逆方向に引っ張られたときに、本体係合面４２ａがブラケット係合面２５４ａに引っ掛かるので、第２取付部２０の挿入方向ＩＤとは逆方向（−Ｙ方向）への移動が規制される。よって、本体部２が挿入空間Ｓから挿入方向ＩＤとは逆方向（−Ｙ方向）に抜け出るのが抑制される。 The main body engaging portion 42 and the bracket engaging portion 254 are configured to engage with each other when the main body portion 2 is inserted into the insertion space S of the vehicle body bracket 200. By such a mechanical mechanism, the main body 2 is prevented from coming out of the insertion space S in the direction opposite to the insertion direction ID (−Y direction).
More specifically, as shown in FIGS. 7A and 7B, when the cross section along the XY plane is viewed, the side guide surface 253 is in a state where the main body 2 is inserted into the vehicle body bracket 200. At the same vertical position as the main body engaging portion 42 (in this example, the upper portion of the side guide surface 253), and gradually protrudes inward in the X-axis direction toward the inner side of the insertion direction ID. It is formed in a taper shape. And when the main-body part 2 is inserted in the vehicle body bracket 200, the guided part 41 of the outer cylinder 40 is pushed inward in the X-axis direction by the side guide surface 253 as it moves to the back side in the insertion direction ID. Elastic deformation inward in the X-axis direction gradually proceeds. When the main body engaging portion 42 reaches the bracket engaging portion 254, the guided portion 41 is elastically restored outward in the X-axis direction, and the main body engaging portion 42 enters the bracket engaging portion 254 and engages. To do. At this time, the main body engaging surface 42a facing the front side (−Y side) of the insertion direction ID in the main body engaging portion 42 is the bracket engagement facing the back side (+ Y side) of the insertion direction ID in the bracket engaging portion 254. Opposite the mating surface 254a. Accordingly, when the second mounting portion 20 is pulled in the direction opposite to the insertion direction ID from the body bracket 200, for example, when an input in the direction opposite to the insertion direction ID (−Y direction) is input, Since the mating surface 42a is hooked on the bracket engaging surface 254a, the movement of the second mounting portion 20 in the direction opposite to the insertion direction ID (the −Y direction) is restricted. Therefore, the main body 2 is prevented from coming out of the insertion space S in the direction opposite to the insertion direction ID (−Y direction).

第２取付部２０は、本例のように少なくとも被ガイド部２１が樹脂製であれば、挿入時に本体係合部４２を含む被ガイド部２１が弾性変形できるので、挿入作業が簡単になるとともに、車体ブラケット２００との連結がより強固となる。したがって、例えば、第２取付部２０は、外筒４０のうち、被ガイド部４１のみが樹脂製で、その他の部分は金属製としてもよい。   If at least the guided portion 21 is made of resin as in this example, the second mounting portion 20 can be easily inserted because the guided portion 21 including the main body engaging portion 42 can be elastically deformed at the time of insertion. The connection with the vehicle body bracket 200 becomes stronger. Therefore, for example, in the second mounting portion 20, only the guided portion 41 of the outer cylinder 40 may be made of resin, and the other portions may be made of metal.

本実施形態の防振装置１では、上述のとおり、本体部２の第２取付部２０が車体ブラケット２００のガイド部２５０に挿入されると、本体係合部４２とブラケット係合部２５４が互いに係合し、それにより、本体部２が挿入空間Ｓから挿入方向ＩＤとは逆方向（−Ｙ方向）に抜け出るのが抑制される。また、このような構成により、本体部２を車体ブラケット２００に連結する作業が簡単となる。
また、本実施形態の防振装置１では、本体部２の本体係合部４２と車体ブラケット２００のブラケット係合部２５４とが、本体部２の被ガイド部２１及び車体ブラケット２００のガイド部２５０のそれぞれの、（本体部２の）挿入方向ＩＤの奥側の部分で、互いに係合するようにされている。これにより、仮に本体係合部４２とブラケット係合部２５４とが、本体部２の被ガイド部２１及び車体ブラケット２００のガイド部２５０のそれぞれの、（本体部２の）挿入方向ＩＤの手前側の部分で、互いに係合する場合に比べて、本体係合部４２とブラケット係合部２５４との係合位置が、挿入空間Ｓの挿入口（挿入空間Ｓの−Ｙ側の開放端）からより遠い位置になるので、本体部２が車体ブラケット２００から抜け出るのをより効果的に抑制できる。
また、本例では、例えば車両が急旋回した時や段差を乗り越した時等に、防振装置１の+Ｙ側に位置するエンジンブラケット１００が、第１取付部１０に、挿入方向ＩＤとは逆方向（−Ｙ方向）に大きな入力を加える場合がある。そのような場合、本実施形態では、本体係合部４２とブラケット係合部２５４との係合位置が、被ガイド部２１及びガイド部２５０のそれぞれの、挿入方向ＩＤの手前側の部分にある場合に比べて、上記入力の入力点に、より近くなる。このため、本体係合部４２とブラケット係合部２５４に作用するモーメントを低減できる。これによっても、本体部２が車体ブラケット２００から抜け出るのをより効果的に抑制できる。 In the vibration isolator 1 of the present embodiment, as described above, when the second mounting portion 20 of the main body 2 is inserted into the guide portion 250 of the vehicle body bracket 200, the main body engaging portion 42 and the bracket engaging portion 254 are mutually connected. Thus, the main body 2 is prevented from coming out of the insertion space S in the direction opposite to the insertion direction ID (−Y direction). Further, with such a configuration, the operation of connecting the main body 2 to the vehicle body bracket 200 is simplified.
In the vibration isolator 1 of the present embodiment, the main body engaging portion 42 of the main body portion 2 and the bracket engaging portion 254 of the vehicle body bracket 200 include the guided portion 21 of the main body portion 2 and the guide portion 250 of the vehicle body bracket 200. These are engaged with each other at the back side of the insertion direction ID (of the main body 2). As a result, the main body engaging portion 42 and the bracket engaging portion 254 are provided in front of the insertion direction ID (of the main body portion 2) of the guided portion 21 of the main body portion 2 and the guide portion 250 of the vehicle body bracket 200, respectively. Compared to the case where the main body engaging portion 42 and the bracket engaging portion 254 are engaged with each other, the engagement position between the main body engaging portion 42 and the bracket engaging portion 254 is from the insertion port of the insertion space S (the open end on the −Y side of the insertion space S). Since it becomes a farther position, it can suppress more effectively that the main-body part 2 slips out from the vehicle body bracket 200. FIG.
In this example, for example, when the vehicle suddenly turns or over a step, the engine bracket 100 located on the + Y side of the vibration isolator 1 is connected to the first mounting portion 10 with the insertion direction ID. A large input may be applied in the reverse direction (−Y direction). In such a case, in the present embodiment, the engagement position between the main body engaging portion 42 and the bracket engaging portion 254 is in the portion on the near side of the insertion direction ID of each of the guided portion 21 and the guide portion 250. Compared to the case, it is closer to the input point of the input. For this reason, the moment which acts on the main body engaging part 42 and the bracket engaging part 254 can be reduced. Also by this, it can suppress more effectively that the main-body part 2 slips out from the vehicle body bracket 200. FIG.

なお、本体部２が車体ブラケット２００から抜け出るのをより効果的に抑制する観点からは、図７（ｂ）の例のように、本体係合部４２とブラケット係合部２５４との係合位置が、車体ブラケット２００における挿入方向ＩＤの奥側（+Ｙ側）の端部から、車体ブラケット２００の挿入方向ＩＤ全長の20〜50％の長さだけ挿入方向ＩＤの手前側に離れた領域内にあると、好適である。
また、同様の観点から、本体係合部４２とブラケット係合部２５４との係合位置は、図７に示す例のように、本体部２の中心軸線Ｃよりも挿入方向ＩＤの奥側であると、好適である。 From the viewpoint of more effectively suppressing the main body 2 from coming out of the vehicle body bracket 200, the engagement position between the main body engagement portion 42 and the bracket engagement portion 254 as in the example of FIG. 7B. However, in the region separated from the back side (+ Y side) of the insertion direction ID of the vehicle body bracket 200 by 20-50% of the total length of the insertion direction ID of the vehicle body bracket 200 to the near side of the insertion direction ID. It is preferred that
From the same point of view, the engagement position between the main body engaging portion 42 and the bracket engaging portion 254 is at the back of the insertion direction ID from the central axis C of the main body portion 2 as in the example shown in FIG. If there is, it is preferable.

図７（ｂ）に示すように、本例では、本体部２の中心軸線Ｃに垂直な仮想平面（ＸＹ平面）に沿う断面において、本体係合面４２ａは、挿入方向ＩＤに垂直に延在している。すなわち、本体部２の中心軸線Ｃに垂直な仮想平面（ＸＹ平面）に沿う断面において、本体係合面４２ａと、本体部２の中心軸線Ｃ及び挿入方向ＩＤを含む仮想平面ＶＰのうち、本体係合面４２ａからの延長線との交点よりも挿入方向ＩＤ手前側（−Ｙ側）の部分との、なす角度θが、９０°である。これにより、第２取付部２０が挿入方向ＩＤとは逆方向に引っ張られても、本体係合部４２がブラケット係合部２５４から外れるのを効果的に抑制でき、ひいては、本体部２が車体ブラケット２００から抜け出るのをより効果的に抑制できる。
なお、図８に示す変形例のように、本体部２の中心軸線Ｃに垂直な仮想平面（ＸＹ平面）に沿う断面において、本体係合面４２ａは、本体部２の中心軸線及び挿入方向を含む仮想平面ＶＰに向かうにつれて徐々に挿入方向ＩＤの奥側へ向かうように延在していても、同様の効果が得られる。すなわち、このとき、本体部２の中心軸線Ｃに垂直な仮想平面（ＸＹ平面）に沿う断面において、本体係合面４２ａと、本体部２の中心軸線Ｃ及び挿入方向ＩＤを含む仮想平面ＶＰのうち、本体係合面４２ａからの延長線との交点よりも挿入方向ＩＤ手前側（−Ｙ側）の部分との、なす角度θが、９０°未満である。
なお、本体係合部４２及びブラケット係合部２５４の機械的強度を保つ観点から、この角度θは、60°以上であると、好適である。
また、本体係合部４２とブラケット係合部２５４とをしっかりと係合させる観点からは、図７や図８の例のように、本体部２の中心軸線Ｃに垂直な仮想平面（ＸＹ平面）に沿う断面において、ブラケット係合面２５４ａが、本体係合面４２ａと同じ方向に延在していると、好適である。 As shown in FIG. 7B, in this example, in the cross section along the virtual plane (XY plane) perpendicular to the central axis C of the main body portion 2, the main body engagement surface 42a extends perpendicular to the insertion direction ID. doing. That is, in the cross section along the virtual plane (XY plane) perpendicular to the central axis C of the main body 2, the main body of the virtual plane VP including the main body engaging surface 42 a and the central axis C of the main body 2 and the insertion direction ID. The angle θ formed by the portion closer to the insertion direction ID (−Y side) than the intersection with the extended line from the engagement surface 42a is 90 °. Thereby, even if the second mounting portion 20 is pulled in the direction opposite to the insertion direction ID, it is possible to effectively suppress the main body engaging portion 42 from being detached from the bracket engaging portion 254. The escape from the bracket 200 can be more effectively suppressed.
8, in the cross section along the virtual plane (XY plane) perpendicular to the central axis C of the main body 2 as in the modification shown in FIG. 8, the main body engagement surface 42 a has the central axis of the main body 2 and the insertion direction. The same effect can be obtained even if the extension extends gradually toward the far side of the insertion direction ID as it goes toward the virtual plane VP that includes it. That is, at this time, in the cross section along the virtual plane (XY plane) perpendicular to the central axis C of the main body 2, the virtual plane VP including the main body engagement surface 42 a, the central axis C of the main body 2 and the insertion direction ID. Of these, the angle θ formed with the portion closer to the insertion direction ID (−Y side) than the intersection with the extension line from the main body engaging surface 42a is less than 90 °.
From the viewpoint of maintaining the mechanical strength of the main body engaging portion 42 and the bracket engaging portion 254, it is preferable that the angle θ is 60 ° or more.
Further, from the viewpoint of firmly engaging the main body engaging portion 42 and the bracket engaging portion 254, a virtual plane (XY plane) perpendicular to the central axis C of the main body portion 2 as in the examples of FIGS. ), The bracket engagement surface 254a preferably extends in the same direction as the main body engagement surface 42a.

本実施形態では、本体部２が車体ブラケット２００に挿入された状態において、第２取付部２０の挿入方向ＩＤの奥側に、車体ブラケット２００の背壁部２９０が位置している。このため、例えば車両が急旋回した時や段差を乗り越した時等に、エンジンブラケット１００が、第１取付部１０に、挿入方向ＩＤ（+Ｙ方向）に大きな入力を加えるときに、第２取付部２０が背壁部２９０に当たって、さらなる挿入方向ＩＤへの移動が規制される。これにより、本体部２が車体ブラケット２００から挿入方向ＩＤに抜け出るのが防止される。
図３及び図７に示すように、本実施形態では、背壁部２９０に、本体係合部４２と対向する位置に、貫通孔２３０が設けられている。これにより、背壁部２９０の背面側（+Ｙ側）から貫通孔２３０を目視することで、本体係合部４２がブラケット係合部２５４に問題無く係合しているかや、本体係合部４２に破損が無いかなどを、確認することができる。
また、本実施形態では、図７（ｂ）のように本体係合面４２ａとブラケット係合面２５４ａとが当たっている状態において、第２取付部２０の弾性シート部５０及び底板６０が背壁部２９０に当たっている。これにより、第２取付部２が車体ブラケット２００に対して+Ｙ側に位置ずれしないようにされている。
ただし、背壁部２９０は無くてもよい。 In the present embodiment, the back wall portion 290 of the vehicle body bracket 200 is located on the back side in the insertion direction ID of the second mounting portion 20 in a state where the main body portion 2 is inserted into the vehicle body bracket 200. For this reason, when the engine bracket 100 applies a large input to the first mounting portion 10 in the insertion direction ID (+ Y direction), for example, when the vehicle turns suddenly or over a step, the second mounting is performed. When the part 20 hits the back wall part 290, the movement to the further insertion direction ID is controlled. Thereby, it is prevented that the main-body part 2 slips out from the vehicle body bracket 200 in the insertion direction ID.
As shown in FIGS. 3 and 7, in the present embodiment, a through-hole 230 is provided in the back wall portion 290 at a position facing the main body engaging portion 42. Accordingly, by visually observing the through hole 230 from the back side (+ Y side) of the back wall portion 290, whether the main body engaging portion 42 is engaged with the bracket engaging portion 254 without any problem, or the main body engaging portion It can be confirmed whether or not there is any damage to 42.
In the present embodiment, the elastic seat portion 50 and the bottom plate 60 of the second mounting portion 20 are connected to the back wall when the main body engaging surface 42a and the bracket engaging surface 254a are in contact with each other as shown in FIG. It hits part 290. Thus, the second mounting portion 2 is prevented from being displaced to the + Y side with respect to the vehicle body bracket 200.
However, the back wall portion 290 may not be provided.

図２、図４、及び図７に示すように、本実施形態では、第２取付部２０の底板６０の下面に、下側へ突出する係合突起６２が設けられている。本体部２が車体ブラケット２００に挿入されると、係合突起６２は、車体ブラケット２００の下壁部２８０の開口２５０の挿入方向ＩＤ手前側の端部を区画する係合凹部２４０ａと係合する。このとき、係合突起６２は、係合凹部２４０ａによって、挿入方向ＩＤとは逆方向（−Ｙ方向）の移動が規制される。係合突起６２と係合凹部２４０ａとの係合位置は、本体部２の中心軸線Ｃ及び挿入方向ＩＤを含む仮想平面ＶＰ上で、本体部２の中心軸線Ｃよりも挿入方向ＩＤの手前側（−Ｙ側）である。
これにより、３次元的に観たときに、入力点近傍（第１取付部１０近傍）に比較的に近い位置で本体係合部４２とブラケット係合部２５４とが、本体部２の中心軸線Ｃ及び挿入方向ＩＤを含む仮想平面ＶＰに対してＸ軸方向両側の２点で係合するのに加えて、入力点近傍から比較的遠い位置で係合突起６２と係合凹部２４０ａとがＸ軸方向の中央の１点で係合するので、これら３点での係合により、バランス良く第２取付部２０を抜け止めすることができる。
ただし、係合突起６２は無くてもよい。 As shown in FIGS. 2, 4, and 7, in the present embodiment, an engagement protrusion 62 that protrudes downward is provided on the lower surface of the bottom plate 60 of the second mounting portion 20. When the main body 2 is inserted into the vehicle body bracket 200, the engagement protrusion 62 engages with an engagement recess 240a that defines an end of the opening 250 of the lower wall portion 280 of the vehicle body bracket 200 on the front side in the insertion direction ID. . At this time, the engagement protrusion 62 is restricted from moving in the direction opposite to the insertion direction ID (−Y direction) by the engagement recess 240a. The engagement position between the engagement protrusion 62 and the engagement recess 240a is on the near side of the insertion direction ID with respect to the center axis C of the main body 2 on the virtual plane VP including the central axis C of the main body 2 and the insertion direction ID. (−Y side).
Thereby, when viewed three-dimensionally, the main body engaging portion 42 and the bracket engaging portion 254 are located at a position relatively close to the vicinity of the input point (near the first mounting portion 10), and the central axis of the main body portion 2. In addition to engaging at two points on both sides in the X-axis direction with respect to the virtual plane VP including C and the insertion direction ID, the engagement protrusion 62 and the engagement recess 240a are located at positions relatively far from the vicinity of the input point. Since the engagement is performed at one central point in the axial direction, the second mounting portion 20 can be prevented from coming off with a good balance by the engagement at these three points.
However, the engagement protrusion 62 may not be provided.

また、本体係合部４２とブラケット係合部２５４との係合位置は、本例のように本体部２の中心軸線Ｃ及び挿入方向ＩＤを含む仮想平面ＶＰに対してＸ軸方向の両側に配置されると好ましいが、仮想平面ＶＰに対してＸ軸方向の一方側のみに配置されてもよい。
また、本体係合部４２とブラケット係合部２５４との係合位置は、仮想平面ＶＰに対してＸ軸方向の一方側を観たときに、複数個所に配置されてもよい。 Further, the engagement positions of the main body engaging portion 42 and the bracket engaging portion 254 are on both sides in the X axis direction with respect to the virtual plane VP including the central axis C and the insertion direction ID of the main body portion 2 as in this example. Although preferably arranged, it may be arranged only on one side in the X-axis direction with respect to the virtual plane VP.
Further, the engaging positions of the main body engaging portion 42 and the bracket engaging portion 254 may be arranged at a plurality of locations when one side in the X-axis direction is viewed with respect to the virtual plane VP.

なお、本発明の防振装置は、上述したものに限られず、様々な変形例が可能である。
例えば、第１取付部材１０の軸線Ｏは、本体部２の中心軸線Ｃと交差していなくてもよく、本体部２の中心軸線Ｃからずれた位置にあってもよい。また、第１取付部材１０の軸線Ｏは、本体部２の中心軸線Ｃに対して垂直でなくてもよく、本体部２の中心軸線Ｃに対して９０°以外の角度で傾斜していてもよい。 In addition, the vibration isolator of this invention is not restricted to what was mentioned above, Various modifications are possible.
For example, the axis O of the first mounting member 10 may not intersect the central axis C of the main body 2, and may be at a position shifted from the central axis C of the main body 2. Further, the axis O of the first mounting member 10 may not be perpendicular to the central axis C of the main body 2 and may be inclined at an angle other than 90 ° with respect to the central axis C of the main body 2. Good.

また、第１取付部１０は、圧入孔１１を有さずに、第１取付部１０をエンジンブラケット１００に締結するためのボルト等の締結部材が挿通されるように構成された取付孔を有するものでもよい。   Further, the first mounting portion 10 does not have the press-fit hole 11 but has a mounting hole configured such that a fastening member such as a bolt for fastening the first mounting portion 10 to the engine bracket 100 is inserted. It may be a thing.

また、防振装置１は、液封式のものでなくてもよく、第２取付部２０及び弾性体３０の内部に液室を有さずに、第１取付部１０及び第２取付部２０が単に弾性体によって連結された構成のものでもよい。   Further, the vibration isolator 1 may not be a liquid seal type, and the first mounting portion 10 and the second mounting portion 20 do not have a liquid chamber inside the second mounting portion 20 and the elastic body 30. However, the configuration may be such that they are simply connected by an elastic body.

また、第２取付部２０がブラケット２００を介して振動発生部に取り付けられ、第１取付部１０がブラケット１００を介して振動受部に取り付けられてもよい。   Alternatively, the second attachment portion 20 may be attached to the vibration generating portion via the bracket 200, and the first attachment portion 10 may be attached to the vibration receiving portion via the bracket 100.

また、防振装置１は、エンジンマウント以外の防振装置に適用することも可能である。例えば、建設機械に搭載された発電機のマウントに適用してもよく、或いは、工場等に設置される機械のマウントに適用してもよい。   The vibration isolator 1 can also be applied to a vibration isolator other than the engine mount. For example, it may be applied to a mount of a generator mounted on a construction machine, or may be applied to a mount of a machine installed in a factory or the like.

本発明による防振装置は、例えば、車両用のエンジンマウント、建設機械に搭載された発電機のマウント、工場等に設置される機械のマウント等に、利用できる。   The vibration isolator according to the present invention can be used for, for example, an engine mount for a vehicle, a generator mounted on a construction machine, a machine mounted in a factory, or the like.

１：防振装置、 ２：本体部、 １０：第１取付部、 １１：圧入孔、 １２：環状弾性部、 １３：環状補強部材、 ２０：第２取付部、 ２１：被ガイド部、 ３０：弾性体、 ４０：外筒、 ４１：被ガイド部、 ４２：本体係合部、 ４２ａ：本体係合面、 ５０：弾性シート部、 ５１：被ガイド部、 ６０：底板、 ６１：被ガイド部、 ６２：係合突起、 ６３：開口、 ７０：ダイヤフラム、 ８０：液室、 ９０：シール部、 １００：エンジンブラケット、 １１０：圧入部、 ２００：車体ブラケット（ブラケット）、 ２１０、２１１：窓、 ２２０：取付孔、 ２３０：貫通孔、 ２４０：開口、 ２４０ａ：係合凹部、 ２５０：ガイド部、 ２５１：上ガイド面、 ２５２：下ガイド面、 ２５３：サイドガイド面、 ２５４：ブラケット係合部、 ２５４ａ：ブラケット係合面、 ２６０：縦壁部、 ２７０：上壁部、 ２８０：下壁部、 ２９０：背壁部、 Ｃ：本体部の中心軸線、 ＩＤ：挿入方向、 Ｏ：第１取付部の軸線、 Ｓ：挿入空間、 ＶＰ：本体部の中心軸線及び挿入方向を含む仮想平面   1: anti-vibration device 2: main body part 10: first attachment part 11: press-fitting hole 12: annular elastic part 13: annular reinforcing member 20: second attachment part 21: guided part 30: 40: outer cylinder, 41: guided portion, 42: main body engaging portion, 42a: main body engaging surface, 50: elastic sheet portion, 51: guided portion, 60: bottom plate, 61: guided portion, 62: engagement protrusion, 63: opening, 70: diaphragm, 80: liquid chamber, 90: seal part, 100: engine bracket, 110: press-fitting part, 200: body bracket (bracket), 210, 211: window, 220: Mounting hole, 230: Through hole, 240: Opening, 240a: Engaging recess, 250: Guide part, 251: Upper guide surface, 252: Lower guide surface, 253: Side guide surface, 254: Bra 254a: bracket engaging surface, 260: vertical wall portion, 270: upper wall portion, 280: lower wall portion, 290: back wall portion, C: central axis of main body portion, ID: insertion direction, O: Axis line of the first mounting part, S: Insertion space, VP: Virtual plane including the center axis line of the main body part and the insertion direction

Claims (3)

振動発生部および振動受部のいずれか一方に取り付けられるブラケットと、
前記振動発生部および振動受部のいずれか他方に取り付けられる第１取付部、前記ブラケットに取り付けられた第２取付部、及び、前記第１取付部と前記第２取付部とを連結する弾性体を有する、本体部と、
を備え、
前記本体部は、前記ブラケットにより区画された挿入空間内に挿入されており、
前記ブラケットは、前記挿入時に前記本体部が所定の挿入方向に挿入されるように前記本体部を案内するガイド部を有し、
前記本体部の前記第２取付部は、前記挿入時に前記ガイド部によって案内される樹脂製の被ガイド部を有し、
前記本体部の前記被ガイド部は、前記被ガイド部における前記挿入方向の奥側の部分に、本体係合部を有し、
前記ブラケットの前記ガイド部は、前記本体係合部と係合し、これにより前記本体部が前記挿入空間から前記挿入方向とは逆方向に抜け出るのを抑制する、ブラケット係合部を、前記ガイド部における前記挿入方向の奥側の部分に有している、防振装置。 A bracket attached to one of the vibration generator and the vibration receiver;
A first attachment portion attached to one of the vibration generating portion and the vibration receiving portion; a second attachment portion attached to the bracket; and an elastic body connecting the first attachment portion and the second attachment portion. A main body, and
With
The main body is inserted in an insertion space defined by the bracket,
The bracket has a guide portion that guides the main body portion so that the main body portion is inserted in a predetermined insertion direction during the insertion,
The second mounting portion of the main body has a guided portion made of resin guided by the guide portion during the insertion,
The guided portion of the main body has a main body engaging portion in a portion on the back side in the insertion direction of the guided portion,
The guide portion of the bracket engages with the main body engaging portion, thereby suppressing the main body portion from coming out of the insertion space in a direction opposite to the insertion direction. An anti-vibration device that is provided in the back portion of the insertion direction in the portion. 前記ブラケットは、前記第２取付部の前記挿入方向の奥側に位置し、前記第２取付部のさらなる前記挿入方向への移動を規制する、背壁部を有し、
前記背壁部には、前記本体係合部と対向する位置に貫通孔が設けられている、請求項１に記載の防振装置。 The bracket is located on the back side of the insertion direction of the second mounting portion, and has a back wall portion that restricts further movement of the second mounting portion in the insertion direction,
The vibration isolator according to claim 1, wherein a through hole is provided in the back wall portion at a position facing the main body engaging portion. 前記本体係合部は、前記挿入方向の手前側を向く本体係合面を有しており、
前記本体係合面は、前記本体部の中心軸線に垂直な仮想平面に沿う断面において、前記挿入方向に垂直に延在しているか、または、前記本体部の中心軸線及び前記挿入方向を含む仮想平面に向かうにつれて徐々に前記挿入方向の奥側へ向かうように延在している、請求項１又は２に記載の防振装置。 The main body engaging portion has a main body engaging surface facing the near side in the insertion direction,
The main body engagement surface extends perpendicularly to the insertion direction in a cross section along a virtual plane perpendicular to the central axis of the main body, or a virtual including the central axis of the main body and the insertion direction The vibration isolator of Claim 1 or 2 extended so that it may go to the back | inner side of the said insertion direction gradually as it goes to a plane.
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