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JP7013116B2 - Anti-vibration mount - Google Patents
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JP7013116B2 - Anti-vibration mount - Google Patents

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JP7013116B2
JP7013116B2 JP2016083537A JP2016083537A JP7013116B2 JP 7013116 B2 JP7013116 B2 JP 7013116B2 JP 2016083537 A JP2016083537 A JP 2016083537A JP 2016083537 A JP2016083537 A JP 2016083537A JP 7013116 B2 JP7013116 B2 JP 7013116B2
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elastic body
inner plate
hole
thickness direction
thickness
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JP2017194095A (en
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一輝 田中
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Nok Corp
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Description

本発明は、防振技術に係る防振マウントに関する。本発明の防振マウントは例えば、自動車等車両用サスペンションの分野においてダンパーマウントまたはストラットマウント等として用いられる。 The present invention relates to an anti-vibration mount according to an anti-vibration technique. The anti-vibration mount of the present invention is used, for example, as a damper mount, a strut mount, or the like in the field of suspensions for vehicles such as automobiles.

ダンパーマウンドは車両のボディとアブソーバーの間に据え付けられ、例えば図5に示すように、ボディ1側に保持された発泡ウレタンよりなる弾性体3と、ロッド4側に設けられたインナープレート5との組み合わせを有し、弾性体3の厚み内にインナープレート5の外周部5aが埋設されている。したがって振動が入力してボディ1に対しインナープレート5が相対変位すると弾性体3が変形し、緩衝作用が発揮される。 The damper mound is installed between the body of the vehicle and the absorber, and as shown in FIG. 5, for example, an elastic body 3 made of urethane foam held on the body 1 side and an inner plate 5 provided on the rod 4 side. It has a combination, and the outer peripheral portion 5a of the inner plate 5 is embedded within the thickness of the elastic body 3. Therefore, when vibration is input and the inner plate 5 is displaced relative to the body 1, the elastic body 3 is deformed and a buffering action is exhibited.

車両が走行時に路面から受ける振動の周波数領域は広く、そのためダンパーマウントの機能としては、防振領域を広く設定する(動的バネ定数を低くする)必要がある。 The frequency range of vibration received from the road surface when the vehicle is running is wide, so it is necessary to set a wide vibration isolation range (lower the dynamic spring constant) as a function of the damper mount.

動的バネ定数を低くする従来の設計手法の一つとして、インナープレート5に対する弾性体3の受圧面積を小さくする方法がある。 As one of the conventional design methods for lowering the dynamic spring constant, there is a method of reducing the pressure receiving area of the elastic body 3 with respect to the inner plate 5.

しかしながら、インナープレート5の外径寸法を縮小するとともに弾性体3の内径寸法を拡大することにより受圧面積を小さくすると、インナープレート5および弾性体3のラップ量Lが小さくなる。ダンパーマウントには実車での使用時に、こじり振動の入力もあるため、ラップ量Lが小さくなると、インナープレート5が弾性体3から抜け落ちる懸念がある。 However, if the pressure receiving area is reduced by reducing the outer diameter dimension of the inner plate 5 and expanding the inner diameter dimension of the elastic body 3, the wrap amount L of the inner plate 5 and the elastic body 3 becomes smaller. Since the damper mount also has an input of prying vibration when used in an actual vehicle, there is a concern that the inner plate 5 may come off from the elastic body 3 when the lap amount L becomes small.

特開2007-100889号公報Japanese Unexamined Patent Publication No. 2007-100889 特開2010-236574号公報Japanese Unexamined Patent Publication No. 2010-236574

本発明は以上の点に鑑みて、動的バネ定数を低くすべく受圧面積を小さくすることができ、しかもインナープレートが弾性体から抜け落ちることがない防振マウントを提供することを目的とする。 In view of the above points, it is an object of the present invention to provide a vibration-proof mount in which the pressure receiving area can be reduced in order to lower the dynamic spring constant and the inner plate does not fall off from the elastic body.

ボディ側に保持された発泡ウレタンよりなる環状の弾性体と、ロッド側に設けられた環状のインナープレートとの組み合わせを有し、前記弾性体の内周側からその厚み内に前記インナープレートの外周部が埋設されている防振マウントにおいて、前記インナープレートは、前記外周部に、平面扇形である複数の穴部を等配状に有し、前記弾性体は、一部の前記弾性体が前記穴部内に充填され、前記インナープレートの厚み方向両面においてそれぞれ前記穴部の開口周縁部に断面円弧状の面取り部が設けられ、前記面取り部の曲率半径をR、前記インナープレートの厚みをtとしてR<t/2の関係を充足することにより、前記穴部の内面の厚み方向中央部に前記穴部内の前記弾性体との接触面が厚み方向に直線状にのびるように構築された断面直線状のストレート部が設けられている。 It has a combination of an annular elastic body made of urethane foam held on the body side and an annular inner plate provided on the rod side, and the outer circumference of the inner plate is within the thickness from the inner peripheral side of the elastic body. In the anti-vibration mount in which the portion is embedded, the inner plate has a plurality of holes having a flat fan shape in the outer peripheral portion in an evenly distributed manner, and the elastic body includes a part of the elastic body. The hole is filled, and chamfers having an arcuate cross section are provided on both sides of the inner plate in the thickness direction in the opening peripheral edge of the hole. The radius of curvature of the chamfer is R, and the thickness of the inner plate is t. By satisfying the relationship of R <t / 2, a cross-sectional straight line constructed so that the contact surface with the elastic body in the hole extends linearly in the thickness direction at the center of the inner surface of the hole in the thickness direction. A straight portion is provided .

したがって本発明によれば、マウントの動的バネ定数を低くすべく受圧面積を小さくすることができ、しかもインナープレートが弾性体から抜け落ちることがない防振マウントを提供することができる。 Therefore, according to the present invention, it is possible to provide a vibration-proof mount in which the pressure receiving area can be reduced in order to lower the dynamic spring constant of the mount, and the inner plate does not fall off from the elastic body.

施例に係る防振マウントの要部断面図Cross-sectional view of the main part of the anti-vibration mount according to the embodiment 同防振マウントに備えられるインナープレートを示す図であって、(A)はその平面図、(B)はその断面図であって(A)におけるB-B線断面図It is a figure which shows the inner plate provided in the anti-vibration mount, (A) is the plan view, (B) is the cross-sectional view, and the BB line cross-sectional view in (A). インナープレートの他の例を示す図であって、(A)はその平面図、(B)はその断面図であって(A)におけるC-C線断面図It is a figure which shows the other example of the inner plate, (A) is the plan view, (B) is the sectional view, and the CC line sectional drawing in (A). 同防振マウントの製造工程を示す説明図Explanatory drawing showing the manufacturing process of the anti-vibration mount 従来例に係る防振マウントの要部断面図Cross-sectional view of the main part of the anti-vibration mount according to the conventional example

開示には、以下の実施形態が含まれる。 The disclosure includes the following embodiments:

施例を図面にしたがって説明する。 Examples will be described with reference to the drawings.

図1に示すように、当該実施例に係る防振マウントは、自動車等車両用のダンパーマウントとして用いられるものであって、ボディ1側のブラケット2に保持された発泡ウレタンよりなる環状の弾性体3と、作動ロッド4の外周に取り付けられた金属等の剛材よりなる環状のインナープレート5との組み合わせよりなり、弾性体3の内径部であってその厚み内にインナープレート5の外周部5aが埋設されている。 As shown in FIG. 1, the anti-vibration mount according to the embodiment is used as a damper mount for a vehicle such as an automobile, and is an annular elastic body made of urethane foam held by a bracket 2 on the body 1 side. 3 is a combination of an annular inner plate 5 made of a rigid material such as metal attached to the outer periphery of the operating rod 4, and is an inner diameter portion of the elastic body 3 within the thickness of the outer peripheral portion 5a of the inner plate 5. Is buried.

また、インナープレート5の外周部5aに、複数の穴部6が等配状に設けられ、これによりインナープレート5に対する弾性体3の受圧面積が縮小されている。穴部6の内部には一部の弾性体3が充填され、穴部6内には弾性体3が充満している。 Further, a plurality of holes 6 are provided in an evenly distributed manner on the outer peripheral portion 5a of the inner plate 5, whereby the pressure receiving area of the elastic body 3 with respect to the inner plate 5 is reduced. The inside of the hole 6 is filled with a part of the elastic body 3, and the hole 6 is filled with the elastic body 3.

また、インナープレート5の厚み方向両面においてそれぞれ、穴部6の開口周縁部にR形状(断面円弧状)の面取り部7が設けられており、上記(イ)式の関係が設定されることにより、穴部6の内面の一部(厚み方向中央部)は断面直線状のストレート部8とされている。 Further, on both sides of the inner plate 5 in the thickness direction, chamfered portions 7 having an R shape (arc-shaped cross section) are provided at the peripheral edges of the openings of the hole portions 6, respectively, and the relationship of the above equation (a) is set. A part of the inner surface (central portion in the thickness direction) of the hole portion 6 is a straight portion 8 having a straight cross section.

穴部6の平面形状ないし開口形状は、図2に示すように円形の小孔とされているが、特に限定されるものではなく、例えば図3に示すような平面扇形(円弧形)の穴部であっても良い。図2では平面円形の穴部6が8等配で設けられている。図3では平面扇形の穴部6が2等配で設けられている。 The planar shape or opening shape of the hole 6 is a circular small hole as shown in FIG. 2, but is not particularly limited, and is, for example, a planar fan shape (arc shape) as shown in FIG. It may be a hole. In FIG. 2, the flat circular hole portions 6 are provided in an equal arrangement of eight. In FIG. 3, the flat fan-shaped holes 6 are provided in two equal parts.

上記構成を備える防振マウントにおいては、弾性体3の厚み内に埋設されるインナープレート5の外周部5aに穴部6が設けられているために、弾性体3の受圧面積を小さくすることができ、しかもこの構造によればインナープレート5および弾性体3のラップ量(オーバーラップ量)Lが縮小されず一定量確保されるため、インナープレート5が弾性体3から抜け落ちるのを防止することができる。 In the anti-vibration mount having the above configuration, since the hole 6 is provided in the outer peripheral portion 5a of the inner plate 5 embedded within the thickness of the elastic body 3, the pressure receiving area of the elastic body 3 can be reduced. Moreover, according to this structure, the wrap amount (overlap amount) L of the inner plate 5 and the elastic body 3 is not reduced and a certain amount is secured, so that the inner plate 5 can be prevented from falling out of the elastic body 3. can.

また、穴部6の開口周縁部にそれぞれ面取り部7が設けられているために、荷重入力時に弾性体3に発生するせん断応力(応力集中)を緩和することができ、よって弾性体3が破損するのを防止することができる。 Further, since the chamfered portions 7 are provided at the peripheral edges of the openings of the holes 6, the shear stress (stress concentration) generated in the elastic body 3 at the time of load input can be relaxed, and thus the elastic body 3 is damaged. Can be prevented from doing so.

また、上記(イ)式の関係が設定されることにより穴部6の内面の一部に断面直線状のストレート部8が設けられているために、荷重入力時に穴部6内部の弾性体3に発生するせん断応力(応力集中)を緩和することができ、これによっても弾性体3が破損するのを防止することができる。 Further, since the straight portion 8 having a linear cross section is provided on a part of the inner surface of the hole portion 6 by setting the relationship of the above equation (a), the elastic body 3 inside the hole portion 6 is provided at the time of load input. It is possible to relax the shear stress (stress concentration) generated in the elastic body 3 and prevent the elastic body 3 from being damaged.

更にまた、図4に示すように、金型9を用いて発泡ウレタンよりなる弾性体3を成形するとき、インナープレート5と弾性体3のラップ量Lが大きいと、材料3aを流し込む(矢印D)際にインナープレート5の下方にエアー(図示せず)が残留する虞があるが、これに対し、インナープレート5に穴部6を設けるとともに穴部6の開口周縁部に面取り部7を設けると、これらを流路としてインナープレート5下方のエアーを上方へ抜くことができる(矢印E)。したがって、発泡ウレタンよりなる弾性体3を成形するに際して、エアーの残留による成形不良が発生するのを未然に防止することができる。 Furthermore, as shown in FIG. 4, when the elastic body 3 made of urethane foam is formed by using the mold 9, if the wrap amount L between the inner plate 5 and the elastic body 3 is large, the material 3a is poured (arrow D). ), Air (not shown) may remain below the inner plate 5, whereas the inner plate 5 is provided with a hole 6 and a chamfered portion 7 is provided at the peripheral edge of the opening of the hole 6. Then, the air below the inner plate 5 can be evacuated upward by using these as a flow path (arrow E). Therefore, when molding the elastic body 3 made of urethane foam, it is possible to prevent molding defects from occurring due to residual air.

1 ボディ
2 ブラケット
3 弾性体
3a 弾性体材料
4 作動ロッド
5 インナープレート
5a 外周部
6 穴部
7 面取り部
8 ストレート部
9 金型
1 Body 2 Bracket 3 Elastic body 3a Elastic body material 4 Actuating rod 5 Inner plate 5a Peripheral part 6 Hole part 7 Chamfering part 8 Straight part 9 Mold

Claims (1)

ボディ側に保持された発泡ウレタンよりなる環状の弾性体と、ロッド側に設けられた環状のインナープレートとの組み合わせを有し、前記弾性体の内周側からその厚み内に前記インナープレートの外周部が埋設されている防振マウントにおいて、
前記インナープレートは、前記外周部に、平面扇形である複数の穴部を等配状に有し、
前記弾性体は、一部の前記弾性体が前記穴部内に充填され、
前記インナープレートの厚み方向両面においてそれぞれ前記穴部の開口周縁部に断面円弧状の面取り部が設けられ、
前記面取り部の曲率半径をR、前記インナープレートの厚みをtとして
R<t/2
の関係を充足することにより、前記穴部の内面の厚み方向中央部に前記穴部内の前記弾性体との接触面が厚み方向に直線状にのびるように構築された断面直線状のストレート部が設けられていることを特徴とする防振マウント。
It has a combination of an annular elastic body made of urethane foam held on the body side and an annular inner plate provided on the rod side, and the outer circumference of the inner plate is within the thickness from the inner peripheral side of the elastic body. In the anti-vibration mount where the part is buried
The inner plate has a plurality of flat fan -shaped holes in the outer peripheral portion in an evenly distributed manner.
In the elastic body, a part of the elastic body is filled in the hole portion, and the elastic body is filled.
A chamfered portion having an arcuate cross section is provided on both sides of the inner plate in the thickness direction at the peripheral edge of the opening of the hole.
R <t / 2 where the radius of curvature of the chamfered portion is R and the thickness of the inner plate is t.
By satisfying the above relationship, a straight portion having a straight cross section constructed so that the contact surface with the elastic body in the hole portion extends linearly in the thickness direction at the central portion of the inner surface of the hole portion in the thickness direction. Anti-vibration mount characterized by being provided.
JP2016083537A 2016-04-19 2016-04-19 Anti-vibration mount Active JP7013116B2 (en)

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0673920A (en) * 1992-08-26 1994-03-15 Shimizu Corp Vibration resistant rubber
JPH09177883A (en) * 1995-12-27 1997-07-11 Kumagai Gumi Co Ltd Laminated rubber support
JP3710237B2 (en) * 1996-12-02 2005-10-26 横浜ゴム株式会社 Laminated rubber bearing with lead plug
JP2010090996A (en) * 2008-10-08 2010-04-22 Bridgestone Corp Strut mount and strut mount manufacturing method

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