JP5066035B2 - Dynamic damper - Google Patents

Dynamic damper Download PDF

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JP5066035B2
JP5066035B2 JP2008221072A JP2008221072A JP5066035B2 JP 5066035 B2 JP5066035 B2 JP 5066035B2 JP 2008221072 A JP2008221072 A JP 2008221072A JP 2008221072 A JP2008221072 A JP 2008221072A JP 5066035 B2 JP5066035 B2 JP 5066035B2
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dynamic damper
connecting member
fluid
rubber film
vibration
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JP2010053994A (en
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努 小川
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Honda Motor Co Ltd
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Description

本発明は、自動車や機械に生ずる振動を抑制するダイナミックダンパに関するものである。   The present invention relates to a dynamic damper that suppresses vibration generated in an automobile or a machine.

ダイナミックダンパとして、ばねと重りで構成された振り子形状のものが知られている。
この種のダイナミックダンパは、固有の共振周波数を有し、共振周波数の近傍で制振効果を発揮するものであり、振動体にダイナミックダンパを取付けておくと、その物体（振動体）に外から振動が加わったとき、ダイナミックダンパの共振と同じ振動周波数であれば、外からの振動力と、ダイナミックダンパが押し返す力とが打ち消しあい、揺れがなくなるという現象を利用したものであった。 As a dynamic damper, a pendulum shape composed of a spring and a weight is known.
This type of dynamic damper has a specific resonance frequency and exhibits a damping effect near the resonance frequency. If a dynamic damper is attached to the vibrating body, the object (vibrating body) is externally applied. When vibration is applied, if the vibration frequency is the same as that of the resonance of the dynamic damper, the vibration force from the outside and the force that the dynamic damper pushes back out to cancel each other, and the phenomenon that the vibration is eliminated is used.

このようなダイナミックダンパとして、固有振動数を変更可能にしたものや、２つの固有振動数で制振効果を発揮するものが知られている（例えば、特許文献１，２参照。）。
特開平７−２０８５３９号公報 特開平８−２９１８４０号公報 As such dynamic dampers, there are known ones in which the natural frequency can be changed and ones that exhibit a damping effect at two natural frequencies (see, for example, Patent Documents 1 and 2).
Japanese Patent Laid-Open No. 7-208539 JP-A-8-291840

特許文献１の技術のダイナミックダンパは、ゴム状弾性材製の弾性体と、この弾性体に接続された質量体とを備えたものであり、弾性体の内側に流体室が設けられ、流体室に流体が充填量調整可能に設けられ、充填する流体の量を調節することによりダイナミックダンパの固有振動数を可変するものである。   The dynamic damper of the technology of Patent Document 1 includes an elastic body made of a rubber-like elastic material and a mass body connected to the elastic body, and a fluid chamber is provided inside the elastic body. The fluid is provided so that the filling amount can be adjusted, and the natural frequency of the dynamic damper is varied by adjusting the amount of fluid to be filled.

特許文献２の技術のダイナミックダンパは、振動発生部に連結される筒部（外筒）と、この筒部の一方の開口を閉塞する弾性体と、この弾性体に連結されるマス部材（重り）と、弾性体よりも低剛性に設定され、筒部の他方の開口を閉塞して弾性体との間に液室を形成する弾性膜と、液室に充填される液体とを備えたものであり、液体が振動したとき若しくは液体が振動しないときでは、弾性体、弾性膜及び液体で構成されるばね定数が異なることを利用し、２つの固有振動数で制振効果を発揮するようにしたものである。   The dynamic damper of the technique of Patent Document 2 includes a cylindrical part (outer cylinder) connected to a vibration generating part, an elastic body that closes one opening of the cylindrical part, and a mass member (weight) connected to the elastic body ), An elastic film that is set to be lower in rigidity than the elastic body, closes the other opening of the cylindrical portion to form a liquid chamber between the elastic body, and a liquid filled in the liquid chamber When the liquid vibrates or when the liquid does not vibrate, the effect of damping is exhibited at two natural frequencies by utilizing the fact that the spring constant composed of the elastic body, the elastic film and the liquid is different. It is a thing.

しかし、特許文献１のダイナミックダンパでは、弾性体に加わる振動の方向は一方に限定されるものであり、多方からの振動に対しては制振効果が少ないと考えられる。
特許文献２のダイナミックダンパでは、特許文献１のダイナミックダンパと同様に、弾性体に加わる振動の方向は一方に限定されるものであり、多方からの振動に対しては制振効果が少ない。 However, in the dynamic damper of Patent Document 1, the direction of vibration applied to the elastic body is limited to one side, and it is considered that the vibration damping effect is small with respect to vibration from many directions.
In the dynamic damper disclosed in Patent Document 2, as in the dynamic damper disclosed in Patent Document 1, the direction of vibration applied to the elastic body is limited to one, and there is little damping effect against vibration from many directions.

また、特許文献１のダイナミックダンパでは、ダイナミックダンパの固有振動数を可変することができ、特許文献２の技術のダイナミックダンパでは、２つの固有振動数で制振効果があるものの、固有振動数の変更は大がかりであり、もっと簡単に固有振動数の調整をしたいものである。   The dynamic damper of Patent Document 1 can vary the natural frequency of the dynamic damper. The dynamic damper of the technique of Patent Document 2 has a damping effect at two natural frequencies, but has a natural frequency of The change is big and we want to adjust the natural frequency more easily.

本発明は、振動体に異なる方向から振動が加わる場合にも制振効果を発揮することができるとともに、制振効果を発揮できる固有振動数を簡単に調整（チューニング）することができるダイナミックダンパを提供することを課題とする。   The present invention provides a dynamic damper capable of exhibiting a damping effect even when vibration is applied to the vibrating body from different directions, and easily adjusting (tuning) the natural frequency capable of exhibiting the damping effect. The issue is to provide.

請求項１に係る発明は、振動体に取付けることで、振動体の振動を抑制するダイナミックダンパにおいて、ダイナミックダンパが、上分割体と、下分割体と、これらの上及び下分割体の間に内蔵される流体と、からなり、上分割体が、上連結部材と、上連結部材の内周に加硫接着され、流体を内部に封入して保持する半球状の上ゴム膜と、から構成され、下分割体が、下連結部材と、下連結部材の内周に加硫接着され、流体を内部に封入して保持する半球状の下ゴム膜と、から構成され、上連結部材と下連結部材とを連結させ、上連結部材と下連結部材との合わせ部分を振動体に取付けることにより、ゴム膜が、振動体の振動方向に関わらず変形可能に構成されたことを特徴とする。 The invention according to claim 1 is a dynamic damper that suppresses vibration of the vibrating body by being attached to the vibrating body. The dynamic damper includes an upper divided body, a lower divided body, and the upper and lower divided bodies. The upper divided body is composed of an upper connecting member and a hemispherical upper rubber film that is vulcanized and bonded to the inner periphery of the upper connecting member and encloses and holds the fluid inside. The lower divided body includes a lower connecting member, and a hemispherical lower rubber film that is vulcanized and bonded to the inner periphery of the lower connecting member and encloses and holds the fluid therein, and the upper connecting member and the lower and a connecting member is connected, by attaching the mating portion between the upper connecting member and the lower connecting member to the vibrating body, rubber film, characterized in deformably be configured regardless of the vibration direction of the vibrating body.

請求項２に係る発明は、ゴム膜の内部に、流体の移動を規制するオリフィスが設けられたことを特徴とする。 The invention according to claim 2 is characterized in that an orifice for restricting the movement of fluid is provided inside the rubber film.

請求項１に係る発明では、ダイナミックダンパは、振動体に取付けることで振動体の振動を抑制するものである。ダイナミックダンパが、流体を内部に封入して保持するゴム膜と、このゴム膜に設けられ、振動体に連結する連結部材とから構成され、ゴム膜は、振動体の振動方向に関わらず変形可能に構成される。
すなわち、ダイナミックダンパが、上分割体と、下分割体と、これらの上及び下分割体の間に内蔵される流体と、からなり、上分割体が、上連結部材と、上連結部材の内周に加硫接着され、流体を内部に封入して保持する半球状の上ゴム膜と、から構成され、下分割体が、下連結部材と、下連結部材の内周に加硫接着され、流体を内部に封入して保持する半球状の下ゴム膜と、から構成され、上連結部材と下連結部材とを連結させ、上連結部材と下連結部材との合わせ部分を振動体に取付けることにより、ゴム膜を、振動体の振動方向に関わらず変形可能になる。すなわち、振動体に異なる方向から振動が加わる場合にも制振効果を発揮することができる。 In the invention according to claim 1, the dynamic damper suppresses the vibration of the vibrating body by being attached to the vibrating body. The dynamic damper is composed of a rubber film that encloses and holds the fluid inside, and a connecting member that is provided on the rubber film and connects to the vibrating body. The rubber film can be deformed regardless of the vibration direction of the vibrating body. Configured.
That is, the dynamic damper includes an upper divided body, a lower divided body, and a fluid contained between the upper and lower divided bodies, and the upper divided body includes an upper connecting member and an upper connecting member. A hemispherical upper rubber film that is vulcanized and bonded to the periphery and holds the fluid enclosed inside, and the lower divided body is vulcanized and bonded to the inner periphery of the lower connecting member and the lower connecting member, A hemispherical lower rubber film that encloses and holds the fluid inside, and connects the upper connecting member and the lower connecting member, and attaches the mating portion of the upper connecting member and the lower connecting member to the vibrating body. Thus, the rubber film can be deformed regardless of the vibration direction of the vibrating body . That is, even when vibration is applied to the vibrating body from different directions, the damping effect can be exhibited.

請求項２に係る発明では、ゴム膜の内部に、流体の移動を規制するオリフィスが設けられたので、制振効果を発揮できる固有振動数をオリフィスで簡単に調整（チューニング）することができる。 In the invention according to claim 2 , since the orifice for restricting the movement of the fluid is provided inside the rubber film, the natural frequency capable of exhibiting the vibration damping effect can be easily adjusted (tuned) by the orifice.

本発明を実施するための最良の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。
図１は本発明に係るダイナミックダンパの斜視図であり、図２は図１に示されるダイナミックダンパの正面断面図である。
ダイナミックダンパ２０は、上分割体２５と、下分割体２６と、これらの上・下分割体２５，２６との間に内蔵される質量体としての流体２１とから構成される。 The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a perspective view of a dynamic damper according to the present invention, and FIG. 2 is a front sectional view of the dynamic damper shown in FIG.
The dynamic damper 20 includes an upper divided body 25, a lower divided body 26, and a fluid 21 as a mass body built between the upper and lower divided bodies 25 and 26.

上分割体２５は、円盤状の上連結部材２８と、その上連結部材２８の内周端に加硫接着された半球状の上ゴム膜２７とからなり、上ゴム膜２７には、流体が内臓されている。
上連結部材２８には、ダイナミックダンパ２０を振動体３９に取付けるボルト４１，４１が貫通する上貫通孔２９，２９が形成される。 The upper divided body 25 includes a disk-like upper connecting member 28 and a hemispherical upper rubber film 27 vulcanized and bonded to the inner peripheral end of the upper connecting member 28. It is built.
Upper through holes 29 and 29 through which bolts 41 and 41 for attaching the dynamic damper 20 to the vibrating body 39 pass are formed in the upper connecting member 28.

下分割体２５は、円盤状の下連結部材３２と、その下連結部材３２の内周端に加硫接着された半球状の下ゴム膜３１とからなり、下ゴム膜３１には流体２１が内蔵されている。 下連結部材３２は、ダイナミックダンパ２０を振動体３９に取付けるボルト４１，４１が貫通する下貫通孔３３，３３と、上分割体２５及び下分割体２６を連結するために、上連結部材２８に対しカシメ固定する連結フランジ４２とが形成される。   The lower divided body 25 includes a disk-like lower connecting member 32 and a hemispherical lower rubber film 31 vulcanized and bonded to the inner peripheral end of the lower connecting member 32. Built in. The lower connecting member 32 is connected to the upper connecting member 28 in order to connect the upper divided body 25 and the lower divided body 26 to the lower through holes 33 and 33 through which the bolts 41 and 41 for attaching the dynamic damper 20 to the vibrating body 39 pass. A connecting flange 42 for caulking and fixing is formed.

なお、ゴム膜２２は、上・下ゴム膜２７，３１から構成され、連結部材２３は、上・下連結部材２８，３２から構成される。
このダイナミックダンパ２０は、振動体３９に取付けることで、振動体（物体）３９の振動を抑制するものであり、質量体としての流体２１と、この流体２１を内部に封入して保持するゴム膜２２と、このゴム膜２２に設けられ、振動体３９に連結する連結部材２３とからなる。 The rubber film 22 is composed of upper and lower rubber films 27 and 31, and the connecting member 23 is composed of upper and lower connecting members 28 and 32.
The dynamic damper 20 is attached to the vibrating body 39 to suppress the vibration of the vibrating body (object) 39, and a fluid 21 as a mass body and a rubber film that encloses and holds the fluid 21 therein. 22 and a connecting member 23 provided on the rubber film 22 and connected to the vibrating body 39.

ダイナミックダンパ２０では、流体２１を質量として作用させ、ゴム膜２２をばねとして作用させる。
流体２１は、一例として水であり、ゴム膜２２は、流体２１が封入される弾性変形可能な膜若しくは容器であり、略球形に形成され、ダイナミックダンパ２０が振動体３９に取付けられたときに、振動体３９の振動方向に関わらず変形可能となる。 In the dynamic damper 20, the fluid 21 acts as a mass, and the rubber film 22 acts as a spring.
The fluid 21 is water as an example, and the rubber film 22 is an elastically deformable film or container in which the fluid 21 is enclosed. Therefore, the vibration body 39 can be deformed regardless of the vibration direction.

図３（ａ），（ｂ）は図１に示されるダイナミックダンパの第１作用説明図である。
（ａ）に示されたように、ダイナミックダンパ２０は、一例として振動体３９にボルト４１，４１で固定される。振動体３９に振動が加わる前においては、重力による変形（垂れ下がり）を除いて、略球形に保たれる。 FIGS. 3A and 3B are first operation explanatory views of the dynamic damper shown in FIG.
As shown in (a), the dynamic damper 20 is fixed to the vibrating body 39 with bolts 41, 41 as an example. Before the vibration is applied to the vibrating body 39, it is kept in a substantially spherical shape except for deformation due to gravity (hanging down).

（ｂ）に示されたように、振動体３９に矢印ａ１の如く、紙面上下方向に振動が加わると流体２１の質量でゴム膜２２が変形され、流体２１の移動を促し、振動体３９の振動を抑制する。   As shown in (b), when a vibration is applied to the vibrating body 39 in the vertical direction as shown by an arrow a1, the rubber film 22 is deformed by the mass of the fluid 21, and the movement of the fluid 21 is promoted. Suppresses vibration.

図４（ａ）〜（ｃ）は図１に示されるダイナミックダンパの第２作用説明図である。
（ａ）に示されたように、振動体３９に矢印ａ２の如く、紙面左斜め方向に振動が加わると流体２１の質量でゴム膜２２が変形され、流体２１の移動を促し、振動体３９の振動を抑制する。 FIGS. 4A to 4C are explanatory views of a second action of the dynamic damper shown in FIG.
As shown in (a), when a vibration is applied to the vibrating body 39 in the diagonally left direction as shown by an arrow a2, the rubber film 22 is deformed by the mass of the fluid 21, and the movement of the fluid 21 is promoted. Suppresses vibration.

（ｂ）に示されたように、振動体３９に矢印ａ３の如く、紙面右斜め方向に振動が加わると流体２１の質量でゴム膜２２が変形され、流体２１の移動を促し、振動体３９の振動を抑制する。   As shown in (b), when vibration is applied to the vibrating body 39 in the diagonally right direction on the paper surface as indicated by an arrow a3, the rubber film 22 is deformed by the mass of the fluid 21, and the movement of the fluid 21 is promoted. Suppresses vibration.

（ｃ）に示されたように、振動体３９に矢印ａ４の如く、紙面水平方向に振動が加わると流体２１の質量でゴム膜２２が変形され、流体２１の移動を促し、振動体３９の振動を抑制する。   As shown in (c), when a vibration is applied to the vibrating body 39 in the horizontal direction as shown by an arrow a4, the rubber film 22 is deformed by the mass of the fluid 21 and the movement of the fluid 21 is promoted. Suppresses vibration.

すなわち、ダイナミックダンパ２０は、振動体３９に加わるあらゆる方向（３６０度）からの振動に対して制振効果を発揮することができる。   That is, the dynamic damper 20 can exhibit a damping effect against vibrations from all directions (360 degrees) applied to the vibrating body 39.

図１〜図４に示されたように、ダイナミックダンパ２０は、振動体３９に取付けることで振動体３９の振動を抑制するものである。ダイナミックダンパ２０が、流体２１を内部に封入して保持するゴム膜２２と、このゴム膜２２に設けられ、振動体３９に連結する連結部材２３とから構成され、ゴム膜２２を、振動体３９の振動方向に関わらず変形可能に構成される。   As shown in FIGS. 1 to 4, the dynamic damper 20 is attached to the vibrating body 39 to suppress the vibration of the vibrating body 39. The dynamic damper 20 includes a rubber film 22 that encloses and holds the fluid 21 inside, and a connecting member 23 that is provided on the rubber film 22 and is connected to the vibration body 39. It can be deformed regardless of the vibration direction.

すなわち、ダイナミックダンパ２０が、流体２１を内部に封入して保持するゴム膜２２と、このゴム膜２２に設けられ、振動体３９に連結する連結部材２３とから構成され、ゴム膜２２を、振動体３９の振動方向に関わらず変形可能に構成することで、振動体３９に異なる方向から振動が加わる場合にも制振効果を発揮することができる。   That is, the dynamic damper 20 includes a rubber film 22 that encloses and holds the fluid 21 inside, and a connecting member 23 that is provided on the rubber film 22 and is connected to the vibrating body 39. By being configured to be deformable regardless of the vibration direction of the body 39, a vibration damping effect can be exhibited even when vibration is applied to the vibration body 39 from different directions.

ダイナミックダンパ２０では、ゴム膜２２が、略球形を呈し、略球形の外面部に連結部材２３が設けられたので、ゴム膜２２が振動体３９の振動方向に関わらず変形可能となる。この結果、振動体３９に異なる方向から振動が加わる場合にも制振効果を発揮することができる。   In the dynamic damper 20, the rubber film 22 has a substantially spherical shape, and the connecting member 23 is provided on the substantially spherical outer surface portion. Therefore, the rubber film 22 can be deformed regardless of the vibration direction of the vibrating body 39. As a result, even when vibration is applied to the vibrating body 39 from different directions, the damping effect can be exhibited.

ダイナミックダンパ２０では、上・下連結部材２８，３２をボルト８１，８１で共締めし、ダイナミックダンパ２０を振動体３９に確実に支持する。   In the dynamic damper 20, the upper and lower connecting members 28, 32 are fastened together with bolts 81, 81, and the dynamic damper 20 is reliably supported on the vibrating body 39.

ダイナミックダンパ２０では、流体２１の質量とゴム膜２２のばねで構成され、流体２１には自由運動があり、ゴム膜２２は大きく変形できるので、制振効果を発揮できる固有周波数に幅をもたすことができる。   The dynamic damper 20 is composed of the mass of the fluid 21 and the spring of the rubber film 22, and the fluid 21 has free motion, and the rubber film 22 can be greatly deformed, so that the natural frequency has a width that can exhibit the damping effect. I can do it.

図５は本発明に係る第２実施例のダイナミックダンパの斜視図である。
ダイナミックダンパ６０は、上分割体６５と、下分割体６６と、これらの上・下分割体６５，６６で挟持される仕切部材６４と、上・下分割体６５，６６との間に内蔵される質量体としての流体６１とから構成される。 FIG. 5 is a perspective view of a dynamic damper according to a second embodiment of the present invention.
The dynamic damper 60 is built in between the upper divided body 65, the lower divided body 66, the partition member 64 sandwiched between the upper and lower divided bodies 65, 66, and the upper and lower divided bodies 65, 66. And a fluid 61 as a mass body.

上分割体６５は、円盤状の上連結部材６８と、その上連結部材６８の内周端に加硫接着された半球状の上ゴム膜６７とからなり、上ゴム膜６７には、流体が内臓されている。
上連結部材６８には、ダイナミックダンパ６０を振動体７９に取付けるボルト８１，８１が貫通する上貫通孔６９，６９が形成される。 The upper divided body 65 includes a disk-like upper connecting member 68 and a hemispherical upper rubber film 67 vulcanized and bonded to the inner peripheral end of the upper connecting member 68. It is built.
The upper connecting member 68 is formed with upper through holes 69 and 69 through which bolts 81 and 81 for attaching the dynamic damper 60 to the vibrating body 79 pass.

下分割体６６は、円盤状の下連結部材７２と、その下連結部材７２の内周端に加硫接着された半球状の下ゴム膜７１とからなり、下ゴム膜７１には流体６１が内蔵されている。 下連結部材７２は、ダイナミックダンパ６０を振動体７９に取付けるボルト８１，８１が貫通する下貫通孔７３，７３と、上分割体６５及び下分割体６６を連結するために、上連結部材６８に対しカシメ固定する連結フランジ８２とが形成される。   The lower divided body 66 includes a disk-like lower connecting member 72 and a hemispherical lower rubber film 71 vulcanized and bonded to the inner peripheral end of the lower connecting member 72, and a fluid 61 is passed through the lower rubber film 71. Built in. The lower connecting member 72 is connected to the upper connecting member 68 in order to connect the upper divided body 65 and the lower divided body 66 to the lower through holes 73 and 73 through which the bolts 81 and 81 for attaching the dynamic damper 60 to the vibrating body 79 pass. A connecting flange 82 for caulking and fixing is formed.

なお、ゴム膜６６は、上・下ゴム膜６７，７１から構成され、連結部材６７は、上・下連結部材６８，７６から構成される。
この、ダイナミックダンパ６０は、振動体７９に取付けることで、振動体（物体）７９の振動を抑制するものであり、質量体としての流体６１と、この流体６１を内部に封入して保持するゴム膜６２と、このゴム膜６２に設けられ、振動体７９に連結する連結部材６３と、ゴム膜６２内に設けられた仕切り部材６４とからなる。 The rubber film 66 includes upper and lower rubber films 67 and 71, and the connecting member 67 includes upper and lower connecting members 68 and 76.
The dynamic damper 60 suppresses vibration of the vibrating body (object) 79 by being attached to the vibrating body 79, and a fluid 61 as a mass body and a rubber that encloses and holds the fluid 61 therein. The film 62 includes a connecting member 63 provided on the rubber film 62 and connected to the vibrating body 79, and a partition member 64 provided in the rubber film 62.

ダイナミックダンパ６０では、流体６１を質量として作用させ、ゴム膜６２及び流体６１をばねとして作用させる。
流体６１は、一例として水であり、ゴム膜６２は、流体６１が封入される弾性変形可能な膜若しくは容器であり、略球形に形成され、ダイナミックダンパ６０が振動体７９に取付けられたときに、振動体７９の振動方向に関わらず変形可能である。 In the dynamic damper 60, the fluid 61 acts as a mass, and the rubber film 62 and the fluid 61 act as a spring.
The fluid 61 is water as an example, and the rubber film 62 is an elastically deformable film or container in which the fluid 61 is enclosed. The vibration body 79 can be deformed regardless of the vibration direction.

仕切り部材６４は、略球形のゴム膜６２内を第１流体室７４及び第２流体室７５に区切る部材であり、流体６１の流量移動を制限する第１〜第３のオリフィス７６〜７８と、ダイナミックダンパ６０を振動体７９に取付けるボルト８１，８１が貫通される貫通孔８３，８３とを備える。   The partition member 64 is a member that divides the inside of the substantially spherical rubber film 62 into a first fluid chamber 74 and a second fluid chamber 75, and first to third orifices 76 to 78 that restrict the flow movement of the fluid 61, Through holes 83 and 83 through which bolts 81 and 81 for attaching the dynamic damper 60 to the vibrating body 79 are passed.

ダイナミックダンパ６０では、ゴム膜６２の内部に、流体６１の移動を規制するオリフィス７６〜７８が設けられたので、制振効果を発揮できる固有振動数をオリフィス７６〜７８で簡単に調整（チューニング）することができる。   In the dynamic damper 60, since the orifices 76 to 78 for restricting the movement of the fluid 61 are provided inside the rubber film 62, the natural frequency capable of exhibiting the vibration damping effect can be easily adjusted (tuned). can do.

ダイナミックダンパ６０では、第１・第２の固定材が設けられたので、振動体７９に連結部材６３を強固に連結することができる。   In the dynamic damper 60, since the first and second fixing members are provided, the connecting member 63 can be firmly connected to the vibrating body 79.

尚、本発明に係るダイナミックダンパ２０は、図１に示すように、略球形に形成される。略球形の中には、上下方向に球形を長くしたもの、若しくは左右方向に球形を長く形成されるものも含む。   The dynamic damper 20 according to the present invention is formed in a substantially spherical shape as shown in FIG. Some of the substantially spherical shapes include those having a long spherical shape in the vertical direction or those having a long spherical shape in the left-right direction.

本発明に係るダイナミックダンパ６０は、図５に示すように、ゴム膜６２内に第１〜第３のオリフィス７６〜７８が設けられたが、これに限るものではなく、オリフィスの個数、オリフィスの設定箇所及びオリフィスの形状は任意である。   As shown in FIG. 5, the dynamic damper 60 according to the present invention is provided with the first to third orifices 76 to 78 in the rubber film 62. However, the present invention is not limited to this. The setting location and the shape of the orifice are arbitrary.

本発明に係るダイナミックダンパは、セダンやワゴンなどの乗用車に採用するのに好適である。   The dynamic damper according to the present invention is suitable for use in passenger cars such as sedans and wagons.

本発明に係るダイナミックダンパの斜視図である。It is a perspective view of a dynamic damper concerning the present invention. 図１に示されるダイナミックダンパの正面断面図である。It is front sectional drawing of the dynamic damper shown by FIG. 図１に示されるダイナミックダンパの第１作用説明図である。It is a 1st operation explanatory view of the dynamic damper shown in FIG. 図１に示されるダイナミックダンパの第２作用説明図である。It is a 2nd effect | action explanatory drawing of the dynamic damper shown by FIG. 本発明に係る第２実施例のダイナミックダンパの斜視図である。It is a perspective view of the dynamic damper of 2nd Example which concerns on this invention.

符号の説明Explanation of symbols

２０，６０…ダイナミックダンパ、２１，６１…流体、２２，６２…ゴム膜、２３，６３…連結部材、３９，７９…振動体、７６〜７８…第１〜第３のオリフィス。   20, 60 ... dynamic damper, 21, 61 ... fluid, 22, 62 ... rubber film, 23, 63 ... connecting member, 39, 79 ... vibrating body, 76-78 ... first to third orifices.

Claims (2)

振動体に取付けることで、振動体の振動を抑制するダイナミックダンパにおいて、
前記ダイナミックダンパは、上分割体と、下分割体と、これらの上及び下分割体の間に内蔵される流体と、からなり、
前記上分割体は、上連結部材と、該上連結部材の内周に加硫接着され、前記流体を内部に封入して保持する半球状の上ゴム膜と、からなり、
前記下分割体は、下連結部材と、該下連結部材の内周に加硫接着され、前記流体を内部に封入して保持する半球状の下ゴム膜と、からなり、
前記上連結部材と前記下連結部材とを連結させ、
前記上連結部材と前記下連結部材との合わせ部分を前記振動体に取付けることにより、 前記ゴム膜が、前記振動体の振動方向に関わらず変形可能に構成されたことを特徴とするダイナミックダンパ。 In a dynamic damper that suppresses vibration of the vibrating body by attaching it to the vibrating body,
The dynamic damper comprises an upper divided body, a lower divided body, and a fluid built in between the upper and lower divided bodies,
The upper divided body includes an upper connecting member, and a hemispherical upper rubber film that is vulcanized and bonded to the inner periphery of the upper connecting member and encloses and holds the fluid therein.
The lower divided body comprises a lower connecting member, and a hemispherical lower rubber film that is vulcanized and bonded to the inner periphery of the lower connecting member and encloses and holds the fluid therein.
Connecting the upper connecting member and the lower connecting member;
By attaching the mating portion between the lower coupling member and the upper connecting member to the vibrating member, the dynamic damper wherein the rubber layer, characterized in that said is deformable constructed irrespective vibration direction of the vibrating body. 前記ゴム膜は、内部に前記流体の移動を規制するオリフィスが設けられたことを特徴とする請求項１記載のダイナミックダンパ。 The dynamic damper according to claim 1 , wherein the rubber film is provided with an orifice for restricting movement of the fluid.
JP2008221072A 2008-08-29 2008-08-29 Dynamic damper Expired - Fee Related JP5066035B2 (en)

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