JP5478939B2 - Vibration isolator - Google Patents

Vibration isolator Download PDF

Info

Publication number
JP5478939B2
JP5478939B2 JP2009124971A JP2009124971A JP5478939B2 JP 5478939 B2 JP5478939 B2 JP 5478939B2 JP 2009124971 A JP2009124971 A JP 2009124971A JP 2009124971 A JP2009124971 A JP 2009124971A JP 5478939 B2 JP5478939 B2 JP 5478939B2
Authority
JP
Japan
Prior art keywords
stopper
inner cylinder
vibration isolator
vibration
peripheral surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2009124971A
Other languages
Japanese (ja)
Other versions
JP2010270874A (en
Inventor
達也 小掘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP2009124971A priority Critical patent/JP5478939B2/en
Publication of JP2010270874A publication Critical patent/JP2010270874A/en
Application granted granted Critical
Publication of JP5478939B2 publication Critical patent/JP5478939B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Vibration Prevention Devices (AREA)

Description

本発明は防振装置に関する。   The present invention relates to a vibration isolator.

エンジンを搭載した車両や建設機械等において、振動の主な発生箇所はエンジンに起因するものが多く、そのためエンジンより発生する振動が乗員や作業者に伝わらない構造とする目的で、ゴムを主体とした防振装置でエンジンをフレームに保持する構成が一般的に用いられている。   In vehicles equipped with engines, construction machines, etc., the main places where vibrations are generated are caused by the engine, and rubber is mainly used for the purpose of preventing the vibration generated from the engine from being transmitted to passengers and workers. A configuration in which the engine is held on the frame by the vibration isolator is generally used.

例として、エンジンからの振動をオペレータに伝えない目的でエンジン等の振動発生体を車両等の躯体に取り付けるため、防振体を用いた防振装置が存在する（例えば、特許文献１参照）。   As an example, there is a vibration isolator using a vibration isolator to attach a vibration generating body such as an engine to a housing such as a vehicle for the purpose of not transmitting vibration from the engine to an operator (for example, see Patent Document 1).

しかしながら、上記特許文献１のような構成では外的入力が入るとマウント自身が変位を起こし、重量物であるエンジンの保持位置が変化する虞がある。特に防振装置を締結するボルトの軸方向と直交する平面（水平面）内の方向への変位を抑制することができないため、位置精度や耐久度が損なわれる可能性がある。   However, in the configuration as described in Patent Document 1, when an external input is input, the mount itself is displaced, and the holding position of the heavy engine may be changed. In particular, since displacement in a plane (horizontal plane) perpendicular to the axial direction of the bolt that fastens the vibration isolator cannot be suppressed, position accuracy and durability may be impaired.

例えば図６に示すような防振装置の場合、ゴム弾性体１１８を介して外筒１１４と内筒１１６とが連結されており、ブラケット部材１３４を一対の外筒１１４で挟持し、プレート部材１４０をボルト１４２で締結することでブラケット部材１３４とプレート部材１４０との間の振動をゴム弾性体１１８で吸収しているが、軸方向直交する方向すなわちプレート部材１４０、ブラケット部材１３４の面方向の入力が過大となると、内筒１１６が外筒１１４に対して変位量が増大し、プレート部材１４０とブラケット部材１３４の位置精度を維持することができない虞がある。   For example, in the case of the vibration isolator as shown in FIG. 6, the outer cylinder 114 and the inner cylinder 116 are connected via the rubber elastic body 118, the bracket member 134 is sandwiched between the pair of outer cylinders 114, and the plate member 140. The vibration between the bracket member 134 and the plate member 140 is absorbed by the rubber elastic body 118 by fastening the bolt 142 with the bolt 142, but the direction orthogonal to the axial direction, that is, the surface direction of the plate member 140 and the bracket member 134 is input. If this is excessive, the amount of displacement of the inner cylinder 116 with respect to the outer cylinder 114 increases, and the positional accuracy of the plate member 140 and the bracket member 134 may not be maintained.

上記の課題に関してはエンジンを防振ゴム等で防振支持し、比較的大きな外的入力・変位に対して金属などの高強度・硬質な部材で変位規制する構成が考えられるが、金属同士の接触により瞬間的に大きな衝撃加速度が発生する。これがエンジンや機体フレーム、取付けに使用されるボルト、ナット類に対して強度的な問題や緩み等の要因となるほか、衝撃に耐性の低い部材への影響が考えられる。   Concerning the above problems, it is conceivable that the engine is supported by anti-vibration rubber or the like, and the displacement is restricted by a high-strength / hard member such as metal against relatively large external input / displacement. A large impact acceleration is instantaneously generated by contact. This may cause problems such as strength problems and looseness of the engine, the fuselage frame, bolts and nuts used for mounting, and may have an effect on members that are less resistant to impact.

そこで、振動吸収機能に加えて防振体の変形に起因するマウント位置の移動（変位）を抑制するストッパーを設けた防振装置が存在する（例えば、特許文献２参照）。   Therefore, there is a vibration isolator provided with a stopper that suppresses movement (displacement) of the mount position due to deformation of the vibration isolator in addition to the vibration absorbing function (see, for example, Patent Document 2).

しかしながら、上記特許文献２のような構成では機構が複雑となり部品点数も増加するため生産性に影響する虞があり、また横方向の変位を抑制するストッパをスペーサで挟持する構造のため、圧縮方向に過大な入力があった際にはストッパ自体が破損あるいは変形する虞がある。   However, in the configuration as described in Patent Document 2, the mechanism is complicated and the number of parts is increased, which may affect the productivity, and the structure in which the stopper that suppresses the lateral displacement is sandwiched between the spacers, the compression direction. If there is an excessive input, the stopper itself may be damaged or deformed.

また外的入力の方向、頻度、程度は特定しにくく、種々の方向への変位規制が必要とされている。このため防振ゴムが破断してもエンジンなどの被支持部材が脱落しにくい構造として、挟み込み方式のマウントが油圧ショベル等の建設機械で専ら使用されているが、当該構造は支持剛性が高いため、アイドリング回転数を低く設定すると振動を吸収し切れなくなる虞があるので、十分な強度と低い支持剛性の両立が求められている。   Further, the direction, frequency, and degree of external input are difficult to specify, and displacement regulation in various directions is required. For this reason, sandwiched mounts are used exclusively in construction machines such as hydraulic excavators as a structure that prevents the supported members such as engines from falling off even if the anti-vibration rubber breaks, but this structure has high support rigidity. If the idling speed is set low, vibrations may not be completely absorbed, so that both sufficient strength and low support rigidity are required.

また上記ストッパの設定に関して緩衝性、締結強度、緩みなどの評価値を満足させるためには機器や使用条件に合わせ、サブミリ単位での寸法設定が必要となる。モールドで製造するゴム部品として従来例に挙げた構成を実現する際にはモールドの共用化を図ることはできないため、モールドを改造する時間、コストが必要となる。   Further, in order to satisfy the evaluation values such as buffering property, fastening strength, looseness, etc. with respect to the setting of the stopper, it is necessary to set dimensions in sub-millimeter units according to the equipment and usage conditions. When realizing the configuration described in the conventional example as a rubber part manufactured by a mold, it is impossible to share the mold, so that time and cost for remodeling the mold are required.

特開２００４−３０１１９６号公報JP 2004-301196 A 特開平５−３３２３８１号公報JP-A-5-332381

本発明は上記事実を考慮し、簡易な構造であり、且つ軸方向と直交する平面内の変位を規制する防振装置を提供することを目的とする。   In view of the above facts, an object of the present invention is to provide a vibration isolator that has a simple structure and restricts displacement in a plane perpendicular to the axial direction.

請求項１に記載の防振装置は、円筒状の筒部と、前記筒部の軸方向外側の端部において周方向外側へ延出し、さらに軸方向外側へ延出するフランジ部と、を有し、振動発生部と振動受部の一方にブラケット部材を介して連結された筒状の外筒と、軸方向端部の面同士を圧接した状態で保持され、前記振動発生部と前記振動受部の他方にプレート部材を介して連結され、前記筒部の内周側に同軸配置された略円筒状の内筒と、前記内筒の外周面から、径方向外側へ延出し、前記筒部と空隙をあけて対向し、前記内筒の軸方向と直交する方向への入力時に前記筒部に当接可能なストッパと、前記外筒および前記フランジ部の内周面と、前記内筒の外周面との間に配置され、前記ストッパとの間に空隙を設けて前記内筒の外周面に加硫接着された弾性体からなる防振体と、が設けられたことを特徴とする。 The vibration isolator according to claim 1 includes a cylindrical tube portion, and a flange portion extending outward in the circumferential direction at an end portion on the axially outer side of the cylindrical portion, and further extending outward in the axial direction. The cylindrical outer cylinder connected to one of the vibration generating section and the vibration receiving section via a bracket member and the axial end faces are held in pressure contact with each other, and the vibration generating section and the vibration receiving section are held. A substantially cylindrical inner cylinder connected to the other of the parts via a plate member and coaxially arranged on the inner peripheral side of the cylindrical part, and extending radially outward from the outer peripheral surface of the inner cylinder, the cylindrical part A stopper which can be opposed to the cylindrical portion at the time of input in a direction orthogonal to the axial direction of the inner cylinder , inner peripheral surfaces of the outer cylinder and the flange section, and the inner cylinder is disposed between the outer circumferential surface, the bullet which has been vulcanization bonded to the outer peripheral surface of the inner cylinder is provided a gap between the stopper And isolator consisting of the body, characterized in that is provided.

上記構成の発明では、内筒の外周面に設けられたストッパが筒部に当接して防振体の変位を規制し、内筒の軸方向と直交する方向への入力に対して変位量の規制と耐久性の向上を図ることができる。さらに、内筒は防振体だけで外筒に支持されており支持剛性を低く設定できるため、防振性を向上させることもできる。また、マウントを軸方向外側に引っ張る力が外部から作用した際に、ストッパが空隙内に設けられているため他の部材とは接触および干渉せず、全ての入力を弾性体で受け止めることができ、内筒が損傷を受ける虞がない。
In the invention with the above configuration, the stopper provided on the outer peripheral surface of the inner cylinder abuts on the cylinder portion to restrict the displacement of the vibration isolator, and the amount of displacement with respect to the input in the direction perpendicular to the axial direction of the inner cylinder is reduced. It is possible to improve regulation and durability. Furthermore, since the inner cylinder is supported by the outer cylinder only by the vibration isolator and the support rigidity can be set low, it is possible to improve the vibration isolation. In addition, when a force pulling the mount outward in the axial direction is applied from the outside, the stopper is provided in the gap so that it does not contact and interfere with other members, and all inputs can be received by the elastic body. There is no risk of damage to the inner cylinder.

請求項２に記載の防振装置は請求項１に記載の構成において、前記ストッパは前記内筒の外周面に加硫接着されたゴム弾性体であることを特徴とする。   According to a second aspect of the present invention, in the structure according to the first aspect, the stopper is a rubber elastic body that is vulcanized and bonded to the outer peripheral surface of the inner cylinder.

上記構成の発明では、組み付け前にストッパを内筒に加硫接着し一体化することで、組み付け時の位置合わせが不要となり、且つ脱落を防止することができる。   In the invention having the above-described configuration, the stopper is vulcanized and integrated with the inner cylinder before assembling, so that positioning during assembling becomes unnecessary, and dropping can be prevented.

請求項３に記載の防振装置は請求項１に記載の構成において、前記ストッパは防振装置の組み付け時に前記内筒の軸方向内側端部外周面に配設される別体部品であることを特徴とする。   The vibration isolator according to claim 3 is the structure according to claim 1, wherein the stopper is a separate part disposed on the outer peripheral surface of the inner end of the inner cylinder in the axial direction when the vibration isolator is assembled. It is characterized by.

上記構成の発明では、ストッパを別体部品とすることで、設計を変更することなく既存の防振装置にストッパを追加することができる。   In the invention with the above configuration, the stopper can be added to the existing vibration isolator without changing the design by using the stopper as a separate part.

請求項４に記載の防振装置は請求項３に記載の構成において、前記内筒の軸方向内側端部に設けられた小径部に前記ストッパが嵌め込まれたことを特徴とする。   According to a fourth aspect of the present invention, in the structure according to the third aspect, the stopper is fitted into a small diameter portion provided at an axially inner end portion of the inner cylinder.

上記構成の発明では、内筒の軸方向内側端に外径の小さな段差を設けストッパを嵌め込む構成とすることで、別体式のストッパであっても組み付け時までは内筒に固定し脱落を防止することができる。   In the invention of the above configuration, a step with a small outer diameter is provided at the inner end in the axial direction of the inner cylinder, and a stopper is fitted, so that even if it is a separate type stopper, it is fixed to the inner cylinder until it is assembled and dropped off. Can be prevented.

本発明は上記構成としたので、簡易な構造であり、且つ軸方向と直交する平面内の変位を規制する防振装置とすることができる。   Since the present invention has the above-described configuration, it is possible to provide a vibration isolator that has a simple structure and restricts displacement in a plane orthogonal to the axial direction.

本発明の実施形態に係る防振装置の構造と組み付け方法を示す断面図である。It is sectional drawing which shows the structure and assembly method of the vibration isolator which concerns on embodiment of this invention. 図１に示す防振装置の構造を示す斜視図である。It is a perspective view which shows the structure of the vibration isolator shown in FIG. 本発明の第２実施形態に係る防振装置の一部構造を示す拡大斜視図である。It is an expansion perspective view which shows a partial structure of the vibration isolator which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る防振装置の一部構造を示す拡大斜視図である。It is an expansion perspective view which shows a partial structure of the vibration isolator which concerns on 3rd Embodiment of this invention. 本発明の効果を示すグラフである。It is a graph which shows the effect of the present invention. 従来の防振装置の構造と組み付け方法を示す断面図である。It is sectional drawing which shows the structure and assembly method of the conventional vibration isolator.

＜実施例＞
以下、本発明を実施例をもって更に詳細に説明する。 <Example>
Hereinafter, the present invention will be described in more detail with reference to examples.

図１には、本発明の実施形態に係る防振装置が示されている。この防振装置１０は、例えば、車両におけるエンジンマウントとして適用され、振動発生部であるエンジンからの入力を減衰吸収し、振動受部である車体へ入力する振動を低減するためのものである。   FIG. 1 shows a vibration isolator according to an embodiment of the present invention. The vibration isolator 10 is applied, for example, as an engine mount in a vehicle, and attenuates and absorbs input from an engine that is a vibration generating unit, and reduces vibrations that are input to a vehicle body that is a vibration receiving unit.

防振装置１０は、構造及び形状が互いに同一とされた一対の防振体１２を備えており、これら一対の防振体１２が軸方向に沿って互いに対称的な位置関係となるように配置されている。   The anti-vibration device 10 includes a pair of anti-vibration bodies 12 having the same structure and shape, and the pair of anti-vibration bodies 12 are disposed so as to have a symmetrical positional relationship along the axial direction. Has been.

防振体１２は、略円筒状に形成された金属製の外筒１４と、この外筒１４の内周側に略同軸的に配置され円筒状に形成された金属製の内筒１６と、これらの外筒１４と内筒１６との間に配置されたゴム弾性体１８とを備えている。   The vibration isolator 12 includes a metal outer cylinder 14 formed in a substantially cylindrical shape, a metal inner cylinder 16 formed in a cylindrical shape and disposed substantially coaxially on the inner peripheral side of the outer cylinder 14, A rubber elastic body 18 disposed between the outer cylinder 14 and the inner cylinder 16 is provided.

外筒１４には、内周側において軸方向に円筒状に形成された筒部２０が設けられると共に、この筒部２０の軸方向外側の端部から径方向外側へ延出する環状のフランジ部２２が一体的に形成されている。   The outer cylinder 14 is provided with a cylindrical portion 20 formed in a cylindrical shape in the axial direction on the inner peripheral side, and an annular flange portion extending radially outward from the axially outer end portion of the cylindrical portion 20. 22 is integrally formed.

内筒１６は、軸方向に沿って外筒１４よりも長い円筒状に形成されており、外側端部が筒部２０内から軸方向外側へ突出するようにゴム弾性体１８によって支持されている。また内筒１６は、図１（Ａ）に示されるように防振体１２が組立前の状態においては、軸方向内側の端部の位置が筒部２０の内側端部よりも引っ込んだ位置にあり、軸方向外側からの押圧力によって内筒１６が軸方向内側へ押された際には、対になる防振体１２の内筒１６の軸方向内側端部と突き合わされる。   The inner cylinder 16 is formed in a cylindrical shape that is longer than the outer cylinder 14 along the axial direction, and is supported by the rubber elastic body 18 so that the outer end protrudes outward in the axial direction from the inside of the cylindrical portion 20. . Further, as shown in FIG. 1A, the inner cylinder 16 is in a position in which the end portion on the inner side in the axial direction is retracted from the inner end portion of the cylinder portion 20 in a state before the vibration isolator 12 is assembled. Yes, when the inner cylinder 16 is pushed inward in the axial direction by the pressing force from the outside in the axial direction, it is abutted against the inner end in the axial direction of the inner cylinder 16 of the vibration isolator 12 that makes a pair.

ゴム弾性体１８は略肉厚円筒状に形成されており、その内周面全体が内筒１６の外周面に加硫接着により固着されると共に、外筒１４の内周面にも加硫接着されることにより外筒１４に固定されている。これにより、外筒１４に対して内筒１６はゴム弾性体１８により軸方向および径方向に弾性的に連結、支持される。   The rubber elastic body 18 is formed in a substantially thick cylindrical shape, and the entire inner peripheral surface thereof is fixed to the outer peripheral surface of the inner cylinder 16 by vulcanization adhesion, and is also vulcanized and bonded to the inner peripheral surface of the outer cylinder 14. As a result, the outer cylinder 14 is fixed. Accordingly, the inner cylinder 16 is elastically connected and supported in the axial direction and the radial direction by the rubber elastic body 18 with respect to the outer cylinder 14.

ゴム弾性体１８には、その軸方向内側の端面に凹状に窪んだ凹部２８が周方向に沿って形成されている。またゴム弾性体１８には、軸方向外側の端面に内筒１６の外周面に沿って断面が略Ｖ字状とされた溝部２６が全周に亘って形成され、周囲よりも剛性の低い部分を構成している。   The rubber elastic body 18 is formed with a recess 28 that is recessed in the axial direction on the end surface in the axial direction along the circumferential direction. The rubber elastic body 18 is formed with a groove portion 26 having a substantially V-shaped cross section along the outer peripheral surface of the inner cylinder 16 on the end surface on the outer side in the axial direction, and a portion having a lower rigidity than the periphery. Is configured.

またゴム弾性体１８は径方向内側から径方向外側へ向って、軸方向の肉厚が徐々に薄くなる略テーパ形状の断面を有しており、軸方向外側の端面が内周側から外周側へ向って軸方向内側（図１（Ａ）では図中下側）へ傾斜した、傾斜面２９とされている。   The rubber elastic body 18 has a substantially tapered cross section in which the axial thickness gradually decreases from the radially inner side to the radially outer side, and the axially outer end surface is changed from the inner peripheral side to the outer peripheral side. The inclined surface 29 is inclined toward the inner side in the axial direction (the lower side in the drawing in FIG. 1A).

ここで、ゴム弾性体１８は、ＮＲ、ＮＢＲ等のゴム材料を素材として形成されている。ゴム弾性体１８は、例えば、内筒１６をそれぞれインサートコアとして加硫成形（モールド成形）されており、加硫成形と同時に内筒１６の外周面と外筒１４の内周面とに加硫接着により固着される。   Here, the rubber elastic body 18 is formed using a rubber material such as NR or NBR as a raw material. The rubber elastic body 18 is, for example, vulcanized (molded) using the inner cylinder 16 as an insert core, and vulcanized to the outer peripheral surface of the inner cylinder 16 and the inner peripheral surface of the outer cylinder 14 simultaneously with the vulcanization molding. It is fixed by bonding.

また内筒１６の軸方向内側端部の外周面には径方向外側へ延設されたストッパ５０が設けられている。ストッパ５０は、例えば内筒１６をインサートコアとして加硫成形（モールド成形）された略円盤形状のゴム部材であり、加硫成形と同時に内筒１６外周面に加硫接着により固着される。またはゴム部材以外であっても金属性、合成樹脂製など種々の素材で形成されていてもよい。   A stopper 50 extending radially outward is provided on the outer peripheral surface of the inner end of the inner cylinder 16 in the axial direction. The stopper 50 is a substantially disc-shaped rubber member that is vulcanized (molded) with the inner cylinder 16 as an insert core, for example, and is fixed to the outer peripheral surface of the inner cylinder 16 by vulcanization adhesion at the same time as vulcanization. Or even if it is other than a rubber member, it may be formed with various raw materials, such as metallic property and synthetic resin.

あるいはストッパ５０は図１（Ａ）および図２に示されるように別体部品とされ、組み付け前に内筒１６の軸方向内側端に嵌め込まれ、径方向外側に延出し筒部２０の内周面と対向する位置に設けられる構成とされていてもよい。   Alternatively, the stopper 50 is a separate part as shown in FIGS. 1A and 2 and is fitted into the axially inner end of the inner cylinder 16 before assembling and extends radially outward to the inner periphery of the cylindrical part 20. You may be set as the structure provided in the position facing a surface.

図１（Ａ）および図１（Ｂ）に示されるように、一対の防振体１２は内筒１６の内側端部同士を互いに対向させながら一対のフランジ部２２の間でブラケット部材３４を挟持する。同時に、一対の防振体１２は軸方向外側から一対のプレート部材３８、４０の間に挟持される状態とされる。   As shown in FIGS. 1 (A) and 1 (B), the pair of vibration isolator 12 holds the bracket member 34 between the pair of flange portions 22 while the inner ends of the inner cylinder 16 face each other. To do. At the same time, the pair of vibration isolator 12 is held between the pair of plate members 38 and 40 from the outside in the axial direction.

ここで、ブラケット部材３４は例えば車両におけるエンジン側に連結されており、このブラケット部材３４には、防振装置１０との連結部分に外筒１４の外径に対応する内径を有する円形の開口部３５（図１（Ａ）および図２参照）が穿設されている。   Here, the bracket member 34 is connected to the engine side of the vehicle, for example, and the bracket member 34 has a circular opening having an inner diameter corresponding to the outer diameter of the outer cylinder 14 at a connection portion with the vibration isolator 10. 35 (see FIG. 1A and FIG. 2) is drilled.

一対のフランジ部２２によりブラケット部材３４を挟持する際には、一対の外筒１４の内側端部である筒部２０を軸方向外側からそれぞれブラケット部材３４の開口部３５内へ挿入し、一対のの外筒１４のフランジ部２２により開口部３５の周縁部をブラケット部材３４の両面側から挟持する。   When the bracket member 34 is sandwiched between the pair of flange portions 22, the cylindrical portions 20 that are the inner ends of the pair of outer cylinders 14 are inserted into the openings 35 of the bracket members 34 from the outside in the axial direction, respectively. The peripheral portion of the opening 35 is clamped from both sides of the bracket member 34 by the flange portion 22 of the outer cylinder 14.

図１に示されるように、一方（図１（Ａ）では図中下側）の防振体１２の軸方向外側に配置されたプレート部材３８には軸方向へ貫通する挿通穴３９が穿設されている。また他方（図１（Ａ）では図中上側）の防振体１２の軸方向外側に配置されたプレート部材４０にも軸方向へ貫通する挿通穴４１が穿設されている。このとき、プレート部材３８、４０の少なくとも一方は車体側へ連結されている。防振装置１０が組み立てられる際には、挿通穴３９と挿通穴４１が一対の内筒１６の開口部とそれぞれ同軸上に一致するように、プレート部材３８、プレート部材４０及び一対の防振体１２がそれぞれ位置調整される。   As shown in FIG. 1, an insertion hole 39 penetrating in the axial direction is formed in the plate member 38 arranged on the outer side in the axial direction of the vibration isolator 12 on one side (lower side in FIG. 1A). Has been. Further, an insertion hole 41 penetrating in the axial direction is also formed in the plate member 40 disposed on the outer side in the axial direction of the vibration isolator 12 on the other side (upper side in FIG. 1A). At this time, at least one of the plate members 38 and 40 is connected to the vehicle body side. When the vibration isolator 10 is assembled, the plate member 38, the plate member 40, and the pair of vibration isolators so that the insertion hole 39 and the insertion hole 41 coincide with the openings of the pair of inner cylinders 16 on the same axis. 12 are respectively adjusted in position.

防振装置１０が組み付けられる際にはボルト４２が軸方向外側からプレート部材４０の挿通穴４１、一対の内筒１６の内周側、及びプレート部材３８の挿通穴３９の順にそれぞれ挿入され、この挿通穴３９から突出するボルト４２の先端部にはワッシャ４４を介してナット４６がねじ込まれる。   When the vibration isolator 10 is assembled, the bolts 42 are inserted from the axially outer side in the order of the insertion holes 41 of the plate member 40, the inner peripheral side of the pair of inner cylinders 16, and the insertion holes 39 of the plate member 38. A nut 46 is screwed into the tip of the bolt 42 protruding from the insertion hole 39 via a washer 44.

このときナット４６は、一対の内筒１６が互いに軸方向内側の面同士を圧接した状態となるまで、ボルト４２へねじ込まれる。これにより、一対の防振体１２はプレート部材３８、４０を一対の内筒１６でリジッドに固定し、ブラケット部材３４を挟持する外筒１４はゴム弾性体１８で内筒１６に対して弾性支持されているので、プレート部材３８、４０に対してブラケット部材３４は一対のゴム弾性体１８で弾性支持された状態とされる。   At this time, the nut 46 is screwed into the bolt 42 until the pair of inner cylinders 16 are brought into a state where the inner surfaces in the axial direction are pressed against each other. Accordingly, the pair of vibration isolator 12 fixes the plate members 38 and 40 to the rigid with the pair of inner cylinders 16, and the outer cylinder 14 holding the bracket member 34 elastically supports the inner cylinder 16 with the rubber elastic body 18. Therefore, the bracket member 34 is elastically supported by the pair of rubber elastic bodies 18 with respect to the plate members 38 and 40.

図１（Ｂ）に示すように、互いに対向するゴム弾性体１８の軸方向内側面に設けられた一対の凹部２８はあわせて空隙２８Ａを形成しており、ゴム弾性体１８の弾性を確保する形状とされている。内筒１６の軸方向内側端の外周面に設けられたストッパ５０は空隙２８の中にあって、外筒１４の筒部２０の内周面と、内筒１６の外周面との間隔が一定以上を保つように維持している。   As shown in FIG. 1B, the pair of recesses 28 provided on the inner surfaces in the axial direction of the rubber elastic bodies 18 facing each other together form a gap 28A to ensure the elasticity of the rubber elastic body 18. It is made into a shape. A stopper 50 provided on the outer peripheral surface of the inner end in the axial direction of the inner cylinder 16 is in the gap 28, and the distance between the inner peripheral surface of the cylindrical portion 20 of the outer cylinder 14 and the outer peripheral surface of the inner cylinder 16 is constant. It is maintained to keep the above.

すなわち、プレート部材３８、４０とブラケット部材３４との間に過大な入力があり、軸方向と直交する方向（図中水平方向）にゴム弾性体１８が変位する際、筒部２０の内周面と内筒１６の外周面との間に設けられたストッパ５０がゴム弾性体１８の過大な変位を抑制し、プレート部材３８、４０とブラケット部材３４の位置精度を維持する。さらに、ストッパ５０がゴムなどの弾性部材であれば、衝撃を吸収する効果をも併せ持つ。   That is, when there is excessive input between the plate members 38, 40 and the bracket member 34, and the rubber elastic body 18 is displaced in a direction orthogonal to the axial direction (horizontal direction in the figure), the inner peripheral surface of the cylindrical portion 20 And the stopper 50 provided between the outer periphery of the inner cylinder 16 suppresses excessive displacement of the rubber elastic body 18 and maintains the positional accuracy of the plate members 38 and 40 and the bracket member 34. Furthermore, if the stopper 50 is an elastic member such as rubber, it also has an effect of absorbing impact.

＜作用効果＞
本発明は上記構成としたので、以下のような優れた効果を有する。 <Effect>
Since this invention was set as the said structure, it has the following outstanding effects.

図６に示すように、ストッパ５０を備えていない従来の構成ではプレート部材１３８、１４０とブラケット部材１３４との間に入力された荷重に対してゴム弾性体１１８の変位量は所定の範囲までリニアに増大する。   As shown in FIG. 6, in the conventional configuration not provided with the stopper 50, the displacement amount of the rubber elastic body 118 is linear up to a predetermined range with respect to the load input between the plate members 138 and 140 and the bracket member 134. To increase.

すなわち図５に点線で示すように、ストッパ５０を備えていない従来の構成では、プレート部材１３８、１４０とブラケット部材１３４との間に入力された荷重（縦軸）に対してゴム弾性体１１８の変位量（横軸）は、ゴム弾性体１１８自体の弾性係数に従って増大する。   That is, as shown by a dotted line in FIG. 5, in the conventional configuration that does not include the stopper 50, the rubber elastic body 118 is applied to the load (vertical axis) input between the plate members 138 and 140 and the bracket member 134. The amount of displacement (horizontal axis) increases according to the elastic coefficient of the rubber elastic body 118 itself.

これに対して実線で示すように本願発明の実施形態においては、プレート部材３８、４０とブラケット部材３４との間に入力された荷重に対して、ゴム弾性体１８の変位量はストッパ５０が筒部２０の内周面に接触した時点で弾性係数が増大するので、軸方向と直交する方向（図中水平方向）へのゴム弾性体１８の変位量は、過大な入力に対しても増大しにくくなり、結果としてプレート部材３８、４０とブラケット部材３４の位置精度を維持することができ、耐久性も向上する。さらに支持剛性を低く設定できるため、防振性を向上させることもできる。   On the other hand, as shown by a solid line, in the embodiment of the present invention, the amount of displacement of the rubber elastic body 18 with respect to the load input between the plate members 38 and 40 and the bracket member 34 is determined by the stopper 50. Since the elastic coefficient increases at the time of contact with the inner peripheral surface of the portion 20, the amount of displacement of the rubber elastic body 18 in the direction orthogonal to the axial direction (horizontal direction in the figure) increases even for excessive input. As a result, the positional accuracy of the plate members 38 and 40 and the bracket member 34 can be maintained, and the durability is also improved. Further, since the support rigidity can be set low, the vibration isolation can be improved.

また、ストッパ５０は一対の内筒１６が軸方向内側で対向する突き当て部分の外周面に設けられているため、組み付け時に内筒１６同士の間に挟まれる虞はなく、組み付け精度に影響を及ぼすことのない構成とすることができる。   In addition, since the stopper 50 is provided on the outer peripheral surface of the abutting portion where the pair of inner cylinders 16 are opposed to each other on the inner side in the axial direction, there is no possibility of being pinched between the inner cylinders 16 during assembly, which affects the assembly accuracy. It can be set as the structure which does not exert.

さらに、ストッパ５０を組み付け時に内筒１６に取り付ける構成であれば、防振体１２の設計・構造に変更を加えることなくストッパ５０を追加可能であり、低コストかつ短期間で既存の防振体１２にストッパ５０を追加する構成とすることができる。   Further, if the stopper 50 is configured to be attached to the inner cylinder 16 at the time of assembly, the stopper 50 can be added without changing the design and structure of the vibration isolator 12, and the existing vibration isolator can be manufactured at low cost and in a short period of time. 12 can be configured to add a stopper 50.

＜第２実施形態＞
図３には本願発明の第２実施形態に係る防振装置の一部が示されている。 Second Embodiment
FIG. 3 shows a part of a vibration isolator according to the second embodiment of the present invention.

図３に示すように、防振体１２の内筒１６は軸方向内側端の外周面にストッパ５１が設けられている。ストッパ５１は内筒１６の外径と略等しい穴の設けられた円盤を複数に分割した形状とされており、組み付け時に接着などで内筒１６の軸方向内側端に固定される構成とされている。   As shown in FIG. 3, the inner cylinder 16 of the vibration isolator 12 is provided with a stopper 51 on the outer peripheral surface of the inner end in the axial direction. The stopper 51 has a shape in which a disk provided with a hole substantially equal to the outer diameter of the inner cylinder 16 is divided into a plurality of parts, and is fixed to the inner end in the axial direction of the inner cylinder 16 by bonding or the like when assembled. Yes.

上記のようにストッパ５１を分割形状としたことで、組み付け時の工数が少なく、且つ防振体１２の設計・構造に変更を加えることなくストッパ５１を追加可能であり、低コストかつ短期間で既存の防振体１２にストッパ５１を追加する構成とすることができる。   Since the stopper 51 is divided as described above, the number of man-hours during assembly is small, and the stopper 51 can be added without changing the design and structure of the vibration isolator 12. The stopper 51 can be added to the existing vibration isolator 12.

＜第３実施形態＞
図４には本願発明の第３実施形態に係る防振装置の一部が示されている。 <Third Embodiment>
FIG. 4 shows a part of a vibration isolator according to a third embodiment of the present invention.

図４に示すように、防振体１２の内筒１６は軸方向内側端を、強度に影響しない程度に径の小さい小径部１６Ａとされており、この小径部１６Ａにストッパ５０が嵌め込まれる構成とされている。   As shown in FIG. 4, the inner cylinder 16 of the vibration isolator 12 has an inner end in the axial direction as a small-diameter portion 16A having a small diameter that does not affect the strength, and a stopper 50 is fitted into the small-diameter portion 16A. It is said that.

上記のように、内筒１６にストッパ５０を組み付ける小径部１６Ａを設けたことで、組み付け時まではストッパ５０を内筒１６に固定し、組み付け後はストッパ５０が一対の内筒１６に挟み込まれるため、確実にストッパ５０の脱落を防止する構成とすることができる。   As described above, by providing the inner cylinder 16 with the small-diameter portion 16A for assembling the stopper 50, the stopper 50 is fixed to the inner cylinder 16 until assembly, and the stopper 50 is sandwiched between the pair of inner cylinders 16 after assembly. For this reason, the stopper 50 can be reliably prevented from falling off.

＜参考例＞
上記第１〜第３実施形態に係る防振装置においては、ストッパは防振体１２の内筒１６に設けられている。すなわち内筒１６の軸方向内側端の外周面に径方向外側へ延出するストッパが設けられ、外筒１４と内筒１６との間隔を確保している。 < Reference example >
In the vibration isolator according to the first to third embodiments, the stopper is provided on the inner cylinder 16 of the vibration isolator 12. That is, a stopper extending radially outward is provided on the outer peripheral surface of the inner end of the inner cylinder 16 in the axial direction, and the interval between the outer cylinder 14 and the inner cylinder 16 is secured.

参考例に係る防振装置は内筒１６の外周面にストッパを設けるかわりに外筒１４の軸方向内側に設けられた筒部２０の内周面に、内筒１６と対向するようにストッパが設けられた構成とされている。 In the vibration isolator according to the reference example , instead of providing a stopper on the outer peripheral surface of the inner cylinder 16, a stopper is provided on the inner peripheral surface of the cylinder portion 20 provided on the inner side in the axial direction of the outer cylinder 14 so as to face the inner cylinder 16. It is set as the provided structure.

上記の構成とすることでも、過大な入力に対して内筒１６と外筒１４との間隔を確保し、プレート部材３８、４０とブラケット部材３４との位置精度を維持する構成とすることができる。   Even with the above-described configuration, it is possible to secure a gap between the inner cylinder 16 and the outer cylinder 14 with respect to an excessive input and to maintain the positional accuracy between the plate members 38 and 40 and the bracket member 34. .

ストッパは筒部２０と加硫接着などで一体成型されたゴム部品でも、あるいは別途製造された別体部品でもよく、また、筒部２０の軸方向内側端に内径の大きい薄肉部を設け、薄肉部にストッパを嵌め込んで固定する構造であってもよい。   The stopper may be a rubber part integrally molded with the cylinder part 20 by vulcanization or the like, or a separate part manufactured separately, and a thin part with a large inner diameter is provided at the inner end in the axial direction of the cylinder part 20 to reduce the thickness of the stopper. A structure may be employed in which a stopper is fitted into the portion and fixed.

＜まとめ＞
以上、本発明の実施例について記述したが、本発明は上記の実施例に何ら限定されるものではなく、本発明の要旨を逸脱しない範囲において種々なる態様で実施し得ることは言うまでもない。 <Summary>
As mentioned above, although the Example of this invention was described, it cannot be overemphasized that this invention is not limited to said Example at all, and can implement in a various aspect in the range which does not deviate from the summary of this invention.

例えば上記各実施形態ではブラケット部材３４を挟んで一対の防振体の両方にストッパを設けた構成となっているが、これに限定されず例えばどちらか一方にストッパが設けられた構成でもよいし、対となるストッパの素材や、厚みなどの形状を異なるものとしてもよい。   For example, in each of the above embodiments, the stopper is provided on both of the pair of vibration isolators with the bracket member 34 interposed therebetween. However, the present invention is not limited to this. For example, a structure in which one of the stoppers is provided may be used. The material of the stopper to be paired and the shape such as thickness may be different.

また、本発明はエンジンマウント以外に応用することもできる。すなわち、振動を発する被支持部材あるいは振動から保護したい被支持部材をフレーム等に固定する目的であれば、キャビンマウント等の多様な用途に本発明を応用することができる。   The present invention can also be applied to applications other than engine mounts. That is, the present invention can be applied to various uses such as a cabin mount as long as it is intended to fix a supported member that generates vibration or a supported member to be protected from vibration to a frame or the like.

１０ 防振装置
１２ 防振体
１４ 外筒
１６ 内筒
１８ ゴム弾性体
２０ 筒部
２２ フランジ部
３４ ブラケット部材
３５ 開口部
３８ プレート部材
４０ プレート部材
５０ ストッパ DESCRIPTION OF SYMBOLS 10 Vibration isolator 12 Vibration isolator 14 Outer cylinder 16 Inner cylinder 18 Rubber elastic body 20 Cylinder part 22 Flange part 34 Bracket member 35 Opening part 38 Plate member 40 Plate member 50 Stopper

Claims (4)

円筒状の筒部と、前記筒部の軸方向外側の端部において周方向外側へ延出し、さらに軸方向外側へ延出するフランジ部と、を有し、振動発生部と振動受部の一方にブラケット部材を介して連結された筒状の外筒と、
軸方向端部の面同士を圧接した状態で保持され、前記振動発生部と前記振動受部の他方にプレート部材を介して連結され、前記筒部の内周側に同軸配置された略円筒状の内筒と、
前記内筒の外周面から、径方向外側へ延出し、前記筒部と空隙をあけて対向し、前記内筒の軸方向と直交する方向への入力時に前記筒部に当接可能なストッパと、
前記外筒および前記フランジ部の内周面と、前記内筒の外周面との間に配置され、前記ストッパとの間に空隙を設けて前記内筒の外周面に加硫接着された弾性体からなる防振体と、
が設けられたことを特徴とする防振装置。 A cylindrical cylindrical portion, and a flange portion extending outward in the circumferential direction at an axially outer end portion of the cylindrical portion, and further extending outward in the axial direction, and one of the vibration generating portion and the vibration receiving portion A cylindrical outer cylinder connected to the bracket member via a bracket member;
A substantially cylindrical shape that is held in a state in which the surfaces of the axial end portions are in pressure contact with each other, is connected to the other of the vibration generating portion and the vibration receiving portion via a plate member, and is coaxially disposed on the inner peripheral side of the cylindrical portion. Inner tube,
A stopper that extends radially outward from the outer peripheral surface of the inner cylinder, opposes the cylindrical part with a gap, and can contact the cylindrical part when inputting in a direction perpendicular to the axial direction of the inner cylinder ,
An elastic body that is disposed between the outer peripheral surface of the outer cylinder and the flange portion and the outer peripheral surface of the inner cylinder, and is vulcanized and bonded to the outer peripheral surface of the inner cylinder with a gap between the stopper and the stopper. A vibration isolator made of
An anti-vibration device characterized by that. 前記ストッパは前記内筒の外周面に加硫接着されたゴム弾性体であることを特徴とする請求項１に記載の防振装置。   The vibration isolator according to claim 1, wherein the stopper is a rubber elastic body that is vulcanized and bonded to the outer peripheral surface of the inner cylinder. 前記ストッパは防振装置の組み付け時に前記内筒の外周面に固定される別体部品であることを特徴とする請求項１に記載の防振装置。   The vibration isolator according to claim 1, wherein the stopper is a separate part that is fixed to the outer peripheral surface of the inner cylinder when the vibration isolator is assembled. 前記内筒の端部に設けられた小径部に前記ストッパが嵌め込まれたことを特徴とする請求項３に記載の防振装置。 The vibration isolator according to claim 3, wherein the stopper is fitted in a small diameter portion provided at an end portion of the inner cylinder.
JP2009124971A 2009-05-25 2009-05-25 Vibration isolator Expired - Fee Related JP5478939B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009124971A JP5478939B2 (en) 2009-05-25 2009-05-25 Vibration isolator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009124971A JP5478939B2 (en) 2009-05-25 2009-05-25 Vibration isolator

Publications (2)

Publication Number Publication Date
JP2010270874A JP2010270874A (en) 2010-12-02
JP5478939B2 true JP5478939B2 (en) 2014-04-23

Family

ID=43419065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009124971A Expired - Fee Related JP5478939B2 (en) 2009-05-25 2009-05-25 Vibration isolator

Country Status (1)

Country Link
JP (1) JP5478939B2 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154345U (en) * 1985-03-18 1986-09-25
JPH0317082Y2 (en) * 1986-07-22 1991-04-11
DE3919775C2 (en) * 1989-06-16 1994-09-01 Daimler Benz Ag Support bearing
JP2880349B2 (en) * 1992-05-27 1999-04-05 住友建機株式会社 Engine mounting device
JP3501177B2 (en) * 1994-10-14 2004-03-02 Ｎｏｋ株式会社 Anti-vibration bush
JPH1193998A (en) * 1997-09-19 1999-04-06 Toyo Tire & Rubber Co Ltd Vibration isolating mount
JP2003049902A (en) * 2001-08-03 2003-02-21 Hitachi Constr Mach Co Ltd Flexible mounting device

Also Published As

Publication number Publication date
JP2010270874A (en) 2010-12-02

Similar Documents

Publication Publication Date Title
JP5085107B2 (en) Engine mount structure
JP6157000B2 (en) Vibration isolator
JP5759328B2 (en) Vibration isolator
WO2012093502A1 (en) Anti-vibration device
CN107250600B (en) Vibration isolator and damper
JP2014043881A (en) Vibration prevention device
JP5331329B2 (en) Anti-vibration device with liquid
JP6532367B2 (en) Tubular vibration control with bracket
WO2014141929A1 (en) Antivibration device
WO2010137585A1 (en) Antivibration device
CN111433484B (en) Arrangement structure of vibration isolator for electric vehicle
JP4963401B2 (en) Strut mount
JP5478939B2 (en) Vibration isolator
JP5916578B2 (en) Vibration isolator with rubber stopper
JP2010270873A (en) Vibration damping device
CN101802437A (en) Self-constrained dynamic damper
JP2018100727A (en) Vibration isolation device
JPWO2017145221A1 (en) Vibration isolator bracket and vibration isolator using the same
JP5572414B2 (en) Anti-vibration device manufacturing method
WO2012132105A1 (en) Vibration prevention device
JP7460501B2 (en) Anti-vibration device
JP2012180872A (en) Strut mount
JP4284243B2 (en) Vibration isolator
JP5336299B2 (en) Vibration isolator
JP6294156B2 (en) Vibration isolator

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120511

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130716

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130718

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130917

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131015

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20131212

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140114

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140212

R150 Certificate of patent or registration of utility model

Ref document number: 5478939

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees