JP2023054685A - Vibration isolation support device - Google Patents

Vibration isolation support device Download PDF

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JP2023054685A
JP2023054685A JP2021163687A JP2021163687A JP2023054685A JP 2023054685 A JP2023054685 A JP 2023054685A JP 2021163687 A JP2021163687 A JP 2021163687A JP 2021163687 A JP2021163687 A JP 2021163687A JP 2023054685 A JP2023054685 A JP 2023054685A
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vibration
support
metal fitting
dynamic damper
support member
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俊治 佐藤
Toshiharu Sato
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Prospira Corp
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Prospira Corp
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Abstract

To provide a vibration isolation support device which easily changes the mass weight of a dynamic damper.SOLUTION: A vibration isolation support device comprises: a main body part 10 having an outer cylinder member 12 connected to either of a vibration generation part and a vibration receiving part, an inner cylinder member 14 arranged at an internal peripheral side of the outer cylinder member 12, and connected to the other, and a rubbery elastic body 16 arranged between the outer cylinder member 12 and the inner cylinder member 14, and elastically connected thereto; a cylindrical support member 40 arranged at one end side of the inner cylinder member 14 in an axial direction; a dynamic damper 60 having a mass body 64 arranged at an external peripheral side of the support member 40, and an elastic connecting body 66 fastened to the support member 40 and the mass body 64, and elastically connected thereto; a connecting bolt 90 inserted into the inner cylinder member 14 and the support member 40, and fastened and connected thereto with a nut 92 which is fastened from the support member 40 side: and an assembling jig 50 arranged at the support member 40 side, and having a salient part which is engaged with a screw part of the connecting bolt 90 in the inner cylinder part 14.SELECTED DRAWING: Figure 1

Description

本発明は、防振支持装置に関し、特に、振動発生部及び振動受部の一方となる部材と振動発生部及び振動受部の他方となる部材との間で荷重を支持すると共に、振動発生部から振動受部への振動の伝達を防止する防振支持装置に関する。 TECHNICAL FIELD The present invention relates to a vibration-isolating support device, and in particular, supports a load between a member that is one of a vibration generating section and a vibration receiving section and a member that is the other of the vibration generating section and the vibration receiving section. to a vibration-receiving part.

自動車には、車体に、運転室(キャビン)を別体として搭載した構造を有するものがある。このような自動車では、エンジンからの振動や走行時の振動が車体側からキャビン側へと直接的に伝達されないように、防振支持装置を介してキャビンが搭載されている。
このような防振支持装置としては、特許文献1に記載されているキャブマウントが知られている。特許文献1に記載されているキャブマウントでは、キャブマウントを構成する内筒金具に質量体及び弾性連結体を含むダイナミックダンパを連結し、キャブマウントの一部として一体的に構成することにより、キャブマウントと別にダイナミックダンパを単体で組み付ける作業を不要としている。
Some automobiles have a structure in which a driver's cab (cabin) is separately mounted on the vehicle body. In such automobiles, the cabin is mounted via an anti-vibration support device so that vibrations from the engine and vibrations during running are not directly transmitted from the vehicle body side to the cabin side.
A cab mount described in Patent Document 1 is known as such an anti-vibration support device. In the cab mount described in Patent Literature 1, a dynamic damper including a mass body and an elastic connecting body is connected to an inner cylindrical metal fitting that constitutes the cab mount, and the cab is integrally configured as a part of the cab mount. It eliminates the need to assemble the dynamic damper separately from the mount.

特開2008-138798号公報JP-A-2008-138798

しかしながら、ダイナミックダンパは、マス重量を大きくする程、より大きな効果が得られる一方で、マス重量が大きくなると、ダイナミックダンパの外径も大きくなり、キャブマウント本体の外筒金具の外径よりも大きくなってしまう。
引用文献1に示すように、キャブマウントは車体に設けられたフレームブラケットに上方からダイナミックダンパを挿通させて取り付けるように構成されているため、ダイナミックダンパの外径がキャブマウントの外筒の外径よりも大きくなると、フレームブラケットに上からキャブマウントを入れられなくなる虞がある。
本発明は、上記課題を鑑みてなされたものであり、防振支持装置の一部として一体的に設けられたダイナミックダンパのマス重量の変更を容易とする防振支持装置を提供することを目的とする。
However, the larger the mass weight, the greater the effect of the dynamic damper. However, the larger the mass weight, the larger the outer diameter of the dynamic damper. turn into.
As shown in Cited Document 1, since the cab mount is configured such that the dynamic damper is inserted from above into the frame bracket provided on the vehicle body, the outer diameter of the dynamic damper is equal to the outer diameter of the outer cylinder of the cab mount. If it is larger than , there is a possibility that the cab mount cannot be inserted into the frame bracket from above.
SUMMARY OF THE INVENTION It is an object of the present invention to provide an anti-vibration support device that facilitates changing the mass weight of a dynamic damper integrally provided as part of the anti-vibration support device. and

上述の課題を解決するための防振支持装置の構成として、振動発生部及び振動受部の一方となる部材と振動発生部及び振動受部の他方となる部材との間で荷重を支持すると共に振動伝達を防止する防振支持装置であって、振動発生部及び振動受部の一方に連結される外筒部材と、前記外筒部材の内周側に配置され、振動発生部及び振動受部の他方に連結される内筒部材と、前記外筒部材と前記内筒部材との間に配置され、前記外筒部材と前記内筒部材とを弾性的に連結したゴム状弾性体と、を備えた本体部と、前記内筒部材の軸方向の一端側に配置された筒状の支持部材と、前記支持部材の外周側に配置された質量体と、前記支持部材及び前記質量体にそれぞれ固着され、該質量体を前記支持部材へ弾性的に連結した弾性連結体とを備えたダイナミックダンパと、前記内筒部材及び前記支持部材に挿通され、前記支持部材側から締結されるナットにより前記本体部とダイナミックダンパとを締結結合するボルトと、前記支持部材側に設けられ、前記内筒部材内において前記ボルトのねじ部と係合する突起部を有する組付け治具とを備えた構成とした。
本構成によれば、本体部とダイナミックダンパとがボルトとナットにより締結可能であるため、本体部を振動発生部及び振動受部に連結した後に、質量体を備えるダイナミックダンパを組付けることができ、マス重量の変更を容易にすることができる。
また、組付け治具が、内筒部材内においてボルトのねじ部と係合する突起部を有することから、ボルトからのダイナミックダンパの脱落が防止され、ダイナミックダンパの本体部への組付けや、取り外しにおいて、本体部からダイナミックダンパの脱落を防ぐように作業者がダイナミックダンパを支える必要がなく、ダイナミックダンパを着脱可能となり、着脱作業の作業性を向上させることができる。
また、防振支持装置は、組付け治具が樹脂からなる構成や、突起部の軸方向に沿う断面形状が三角形状である構成としても良い。
As a configuration of the vibration isolation support device for solving the above-described problems, a load is supported between a member that is one of the vibration generating section and the vibration receiving section and a member that is the other of the vibration generating section and the vibration receiving section. A vibration isolation support device for preventing transmission of vibration, comprising: an outer cylindrical member connected to one of a vibration generating portion and a vibration receiving portion; and a rubber-like elastic body disposed between the outer cylinder member and the inner cylinder member and elastically connecting the outer cylinder member and the inner cylinder member, a cylindrical support member disposed on one axial end side of the inner cylindrical member; a mass body disposed on the outer peripheral side of the support member; and the support member and the mass body, respectively. A dynamic damper having an elastic connecting body fixed and elastically connecting the mass body to the supporting member; A configuration comprising: a bolt for fastening and coupling the main body and the dynamic damper; and an assembly jig provided on the support member side and having a protrusion that engages with the threaded portion of the bolt in the inner cylindrical member. bottom.
According to this configuration, the main body and the dynamic damper can be fastened together with bolts and nuts, so that the dynamic damper including the mass can be assembled after the main body is connected to the vibration generating section and the vibration receiving section. , can facilitate changes in mass weight.
In addition, since the assembly jig has a protrusion that engages with the threaded portion of the bolt inside the inner cylindrical member, the dynamic damper is prevented from falling off from the bolt, and the dynamic damper can be assembled to the main body, When removing the dynamic damper, the operator does not need to support the dynamic damper to prevent it from falling off from the main body, and the dynamic damper can be attached and detached.
Further, the anti-vibration support device may have a configuration in which the assembly jig is made of resin, or a configuration in which the cross-sectional shape of the protrusion along the axial direction is triangular.

なお、上記発明の概要は、本発明の必要な特徴の全てを列挙したものではなく、特徴群を構成する個々の構成もまた発明となり得る。 It should be noted that the above summary of the invention does not list all the necessary features of the present invention, and individual configurations that constitute a group of features can also be inventions.

実施形態に係る防振支持装置の断面図である。1 is a cross-sectional view of an anti-vibration support device according to an embodiment; FIG. 防振支持装置における支持金具及び組付け治具を抽出した図である。It is the figure which extracted the support metal fittings and assembly jig|tool in a vibration isolation support apparatus. キャブマウントの取り付け工程を示す図である。It is a figure which shows the attachment process of a cab mount. キャブマウントの他の形態を示す図である。FIG. 10 is a diagram showing another form of the cab mount;

以下、発明の実施形態を通じて本発明を詳説するが下記実施形態は特許請求の範囲に係る発明を限定するものではなく、また実施形態の中で説明される特徴の組み合わせの全てが発明の解決手段に必須であるとは限らない。 Hereinafter, the present invention will be described in detail through embodiments of the invention, but the following embodiments do not limit the invention according to the claims, and all combinations of features described in the embodiments are means for solving the invention. is not necessarily required for

図1は、実施形態に係る防振支持装置の断面図である。図1に示す防振支持装置は、所謂、自動車におけるキャブマウントとして利用されている。以下の説明では、車体に取り付けられた状態に基づいて、キャブマウント1について説明する。 FIG. 1 is a cross-sectional view of the anti-vibration support device according to the embodiment. The anti-vibration support device shown in FIG. 1 is used as a so-called cab mount in an automobile. In the following description, the cab mount 1 will be described based on the state in which it is attached to the vehicle body.

キャブマウント1は、例えば、車体80と、運転室であるキャブ(キャビン)82とが別体に構成された自動車において、キャブ82を車体80上に防振的に搭載するため装置であって、車体80とキャブ82との間に設けられる本体部10と、ダイナミックダンパ60とを備える。 The cab mount 1 is, for example, a device for mounting the cab 82 on the vehicle body 80 in an anti-vibration manner in an automobile in which the vehicle body 80 and the cab (cab) 82, which is the operator's cab, are configured separately. A body part 10 provided between a vehicle body 80 and a cab 82 and a dynamic damper 60 are provided.

[本体部について]
図1に示すように、本体部10は、全体として略円柱状に形成される。
本体部10は、外周側に略円筒状に形成された外筒金具12が配置され、外筒金具12の内周側の同軸的に略円柱状に形成された内筒金具14が配置され、外筒金具12と内筒金具14との間にゴム状弾性体16が配置されている。
なお、図1中の符号Sは、外筒金具12及び内筒金具14の軸心を表しており、この軸心Sに沿った方向を装置の軸方向として以下の説明を行う。また、キャブ82側を上、車体80側を下として方向を特定する。
[About the main body]
As shown in FIG. 1, the body portion 10 is formed in a substantially cylindrical shape as a whole.
The body portion 10 has an outer cylindrical metal fitting 12 formed in a substantially cylindrical shape on the outer peripheral side, and an inner cylindrical metal fitting 14 formed in a substantially cylindrical shape coaxially on the inner peripheral side of the outer cylindrical metal fitting 12. A rubber-like elastic body 16 is arranged between the outer cylindrical metal fitting 12 and the inner cylindrical metal fitting 14 .
1 represents the axial center of the outer cylindrical metal fitting 12 and the inner cylindrical metal fitting 14, and the following description will be made with the direction along this axial center S as the axial direction of the device. Also, the direction is specified with the cab 82 side as the top and the vehicle body 80 side as the bottom.

外筒金具12は、軸心Sに沿って延長する筒部13と、筒部13の下端側のストッパ受部28と、筒部13の上端側のフランジ部18とを有する。筒部13は、断面視において下側が先細りのテーパー状に形成される。ストッパ受部28は、筒部13の下端部を軸心S方向に向けて屈曲したリブ状に形成される。 The outer cylindrical metal fitting 12 has a cylindrical portion 13 extending along the axis S, a stopper receiving portion 28 on the lower end side of the cylindrical portion 13 , and a flange portion 18 on the upper end side of the cylindrical portion 13 . The cylindrical portion 13 is formed in a tapered shape with a tapered lower side in a cross-sectional view. The stopper receiving portion 28 is formed in the shape of a rib that bends the lower end portion of the cylindrical portion 13 toward the axis S direction.

フランジ部18は、筒部13の上端部において、半径方向に広がる平板円板状に形成されるステー部20と、ステー部20の外周縁を上方に屈曲した補強用のリブ部22とを有して形成される。 The flange portion 18 has a stay portion 20 that is formed in the shape of a flat disk that extends in the radial direction at the upper end portion of the cylindrical portion 13, and a reinforcing rib portion 22 that bends the outer peripheral edge of the stay portion 20 upward. formed by

ステー部20には、フランジ部18を車体80に固定するための連結穴26が設けられている。連結穴26は、軸方向に貫通する円形に形成され、例えば、軸心Sを挟んで対象となる位置に2つ設けられる。連結穴26の外周には、ステー部20の厚みを増して補強する補強リング24が、溶接などにより固着されている。 A connection hole 26 for fixing the flange portion 18 to the vehicle body 80 is provided in the stay portion 20 . The connecting holes 26 are formed in a circular shape penetrating in the axial direction, and are provided at two symmetrical positions with the axis S interposed therebetween, for example. A reinforcing ring 24 for increasing the thickness of the stay portion 20 and reinforcing it is fixed to the outer circumference of the connecting hole 26 by welding or the like.

内筒金具14は、軸方向に沿う寸法が外筒金具12の寸法よりも長く設定され、上端部及び下端部が外筒金具12の上端及び下端から突出するように外筒金具12に対して設けられる。内筒金具14は、筒部15とフランジ部30とを有する。筒部15とフランジ部30は、例えば一体的に形成されている。筒部15は、肉厚が一定の円筒状に形成される。フランジ部30は、筒部15の上端部に設けられ、筒部15の上端部において半径方向外側に出する環状に形成される。 The inner cylindrical metal fitting 14 has a dimension along the axial direction set to be longer than the dimension of the outer cylindrical metal fitting 12 , and is attached to the outer cylindrical metal fitting 12 so that the upper end and the lower end protrude from the upper end and the lower end of the outer cylindrical metal fitting 12 . be provided. The inner tubular metal fitting 14 has a tubular portion 15 and a flange portion 30 . The tubular portion 15 and the flange portion 30 are formed integrally, for example. The cylindrical portion 15 is formed in a cylindrical shape with a constant thickness. The flange portion 30 is provided at the upper end portion of the tubular portion 15 and is formed in an annular shape protruding radially outward from the upper end portion of the tubular portion 15 .

なお、内筒金具14は、筒部15とフランジ部30とを一体的に形成しても、筒部15とフランジ部30とを別体の部品とし、これをパイプ状の本体部に溶接等により一体化しても良い。 Even if the tubular portion 15 and the flange portion 30 are integrally formed, the tubular portion 15 and the flange portion 30 of the inner tubular metal fitting 14 are formed as separate parts, which are welded to the pipe-like main body. It may be integrated by

図1に示すように、ゴム状弾性体16は、外筒金具12と内筒金具14との間に位置する厚肉の円筒状として設けられ、例えば、外筒金具12及び内筒金具14に対して加硫接着されている。これにより、外筒金具12と内筒金具14とがゴム状弾性体16により弾性的に連結される。 As shown in FIG. 1, the rubber-like elastic body 16 is provided in a thick cylindrical shape located between the outer cylindrical metal fitting 12 and the inner cylindrical metal fitting 14. It is vulcanized and bonded to it. As a result, the outer cylindrical metal fitting 12 and the inner cylindrical metal fitting 14 are elastically connected by the rubber-like elastic body 16 .

ゴム状弾性体16は、内筒金具14に対し、該内筒金具14のフランジ部30の下面の全てを覆い、筒部15の外周に沿って外筒金具12の下端に至る範囲で延長するように設けられる。また、ゴム状弾性体16は、外筒金具12に対し、該外筒金具12の筒部13の内周を上端から下端に至り、ストッパ受部28の下面側を覆うクッション部38を有するように延長して設けられる。 The rubber-like elastic body 16 covers the entire lower surface of the flange portion 30 of the inner cylindrical metal fitting 14 and extends along the outer periphery of the cylindrical portion 15 to the lower end of the outer cylindrical metal fitting 12. is provided as follows. In addition, the rubber-like elastic body 16 extends from the upper end to the lower end of the inner periphery of the cylindrical portion 13 of the outer cylindrical metal fitting 12 and has a cushion portion 38 covering the lower surface side of the stopper receiving portion 28 . It is provided by extending to

ゴム状弾性体16は、外筒金具12のフランジ部18と、内筒金具14のフランジ部30との間の外周部分において、軸方向にV字状に窪むすぐり部36が円周方向に沿って一周にわたり形成されている。また、ゴム状弾性体16は、外筒金具12の下端側と、内筒金具14の下端側との間において、軸方向上方に向けて略矩形状に窪むすぐり部37が、円周方向に沿って一周にわたり形成されている。このように、ゴム状弾性体16は、すぐり部36及びすぐり部37を有することにより、外筒金具12に対する内筒金具14の相対的な傾斜の剛性が調整可能とされる。 The rubber-like elastic body 16 has a hollowed portion 36 that is recessed in a V shape in the axial direction in the outer peripheral portion between the flange portion 18 of the outer tubular member 12 and the flange portion 30 of the inner tubular member 14 in the circumferential direction. It is formed all the way around. In addition, the rubber-like elastic body 16 has a hollowed portion 37 which is recessed in a substantially rectangular shape upward in the axial direction between the lower end side of the outer cylindrical metal fitting 12 and the lower end side of the inner cylindrical metal fitting 14, and which extends in the circumferential direction. is formed along the circumference. In this manner, the rubber-like elastic body 16 has the hollowed portion 36 and the hollowed portion 37, so that the rigidity of the relative inclination of the inner tubular member 14 with respect to the outer tubular member 12 can be adjusted.

[ダイナミックダンパについて]
本体部10の下側には、ストッパ金具52、支持金具40を介してダイナミックダンパ60が設けられている。ストッパ金具52は、円板状に形成された部材であって、中心部には図2に示す組付け治具50が貫通する円形の挿通穴54が形成されている。ストッパ金具52は、内筒金具14の下端面と支持金具40の頂板部42との間に挟持固定される。このとき、ストッパ金具52は、上面の外周側がクッション部38の下端と所定の間隔(隙間)を空けて対向する。そして、ストッパ金具52は、内筒金具14が大きく傾斜したときに外筒金具12の下端部を覆うクッション部38に衝接することにより、内筒金具14の外筒金具12に対する傾斜を規制する。
[About the dynamic damper]
A dynamic damper 60 is provided below the main body 10 via a stopper metal fitting 52 and a support metal fitting 40 . The stopper metal fitting 52 is a disc-shaped member, and has a circular insertion hole 54 formed in the center thereof through which the assembly jig 50 shown in FIG. 2 passes. The stopper metal fitting 52 is clamped and fixed between the lower end surface of the inner cylindrical metal fitting 14 and the top plate portion 42 of the support metal fitting 40 . At this time, the outer peripheral side of the upper surface of the stopper fitting 52 faces the lower end of the cushion portion 38 with a predetermined gap (gap). The stopper fitting 52 restricts the inclination of the inner tubular fitting 14 with respect to the outer tubular fitting 12 by contacting the cushion portion 38 covering the lower end portion of the outer tubular fitting 12 when the inner tubular fitting 14 is greatly inclined.

図2に示すように、支持金具40は、本体部10にダイナミックダンパ60を一体化させるための円筒状の部材であって、内筒金具14の下側において同軸に配置される。支持金具40の頂面側は、頂板部42により閉止され、例えば、その内外径が外筒金具12よりも小径であり、かつ内筒金具14よりも大径に構成される。また、支持金具40には、下端部が全周に亘って外周側へ屈曲されたフランジ状のダンパストッパ部48が設けられている。 As shown in FIG. 2, the support metal fitting 40 is a cylindrical member for integrating the dynamic damper 60 with the main body portion 10, and is arranged coaxially below the inner cylindrical metal fitting 14. As shown in FIG. The top surface side of the support fitting 40 is closed by a top plate portion 42 , which has inner and outer diameters smaller than those of the outer tubular fitting 12 and larger than those of the inner tubular fitting 14 , for example. Further, the support metal fitting 40 is provided with a flange-like damper stopper portion 48 whose lower end portion is bent toward the outer peripheral side over the entire circumference.

図2は、支持金具40及び組付け治具50の拡大図である。
支持金具40の頂板部42の中心部には、軸方向に貫通する円形の連結穴44が形成されている。連結穴44には、ダイナミックダンパ60を本体部10の一部として組みつける際に、組み付けを容易にするための組付け治具50が貫通して設けられる。図2(a)に示すように、連結穴44は、内周面が上端側から下端側へ向って内径がテーパ状に拡大するように傾斜した被係止部46とされている。
FIG. 2 is an enlarged view of the support bracket 40 and the assembly jig 50. As shown in FIG.
A circular connecting hole 44 is formed in the central portion of the top plate portion 42 of the support metal fitting 40 so as to pass therethrough in the axial direction. An assembly jig 50 is provided through the connecting hole 44 to facilitate assembly when the dynamic damper 60 is assembled as a part of the main body 10 . As shown in FIG. 2(a), the connecting hole 44 is formed as a locked portion 46 whose inner peripheral surface is inclined so that the inner diameter expands in a tapered shape from the upper end side to the lower end side.

[組付け治具について]
組付け治具50は、例えば、樹脂などを素材とする円筒状に形成され、上端部に軸方向に突出する突起部51と、下端部に下方へ向って外径がテーパ状に拡大し、支持金具40の連結穴44の被係止部46に面接触状態とされる下側係止部58とを有する。組付け治具50は、支持金具40の連結穴44内へ下方から嵌挿されるとともに、その下端部の下側係止部58の外周側を被係止部46に圧接させて支持金具40に取り付けられる。これにより、組付け治具50の下端面が、支持金具40の頂板部42の下面と面一とされる。
[About the assembly jig]
The assembly jig 50 is formed in a cylindrical shape made of resin or the like, for example, and has a projection 51 projecting in the axial direction at the upper end and a tapered outer diameter expanding downward at the lower end. It has a lower locking portion 58 that is in surface contact with the locked portion 46 of the connecting hole 44 of the support fitting 40 . The mounting jig 50 is inserted into the connecting hole 44 of the support metal fitting 40 from below, and the outer peripheral side of the lower locking portion 58 at the lower end thereof is pressed against the locked portion 46 so as to be attached to the support metal fitting 40 . It is attached. As a result, the lower end surface of the assembly jig 50 is flush with the lower surface of the top plate portion 42 of the support metal fitting 40 .

図2(a)に示すように組付け治具50の突起部51は、断面視における形状(断面形状)が、例えば、連結ボルト90のねじ山に嵌合するような三角形状とされる。また、図2(b)に示すように、組付け治具50は、突起部51を軸方向視したときに、突起部51の先端51Aの直径dが、連結ボルト90のねじ山の谷の径とされる。 つまり、突起部51は、連結ボルト90のねじ部94aに係合可能とされる。 As shown in FIG. 2( a ), the protrusion 51 of the assembly jig 50 has a triangular shape (cross-sectional shape) in a cross-sectional view, for example, so as to fit into the thread of the connecting bolt 90 . Further, as shown in FIG. 2(b), when the protrusion 51 is viewed in the axial direction, the mounting jig 50 has a diameter d of the tip 51A of the protrusion 51 that is equal to the root of the thread of the connecting bolt 90. diameter. In other words, the protrusion 51 can be engaged with the threaded portion 94 a of the connecting bolt 90 .

また、組付け治具50は、上端部から下側係止部58に至るまでの外径が内筒金具14の筒部15の内径よりも少なくとも小径な寸法とされる。また、組付け治具50は、突起部51が連結ボルト90のねじ山に係合した状態において、ダイナミックダンパ60の重さよりも大きな力を軸方向に加えたときに、変形して連結ボルト90の軸方向に移動可能な強度を有するように構成すると良い。 Also, the mounting jig 50 has an outer diameter from the upper end portion to the lower engaging portion 58 that is at least smaller than the inner diameter of the cylindrical portion 15 of the inner cylindrical metal fitting 14 . In addition, when a force greater than the weight of the dynamic damper 60 is applied in the axial direction in a state where the protrusion 51 is engaged with the thread of the connecting bolt 90 , the assembly jig 50 is deformed to cause the connecting bolt 90 to move. It is preferable to configure so as to have a strength that allows movement in the axial direction of .

図1に示すように、ダイナミックダンパ60は、支持金具40の外周側に設けられる。ダイナミックダンパ60は、支持金具40の外周側に配置される略薄肉筒状のホルダ金具62と、このホルダ金具62の外周側に嵌挿固定される円筒状の質量体64と、ホルダ金具62と支持金具40とを弾性的に連結する略円筒状の弾性連結体66とを備える。 As shown in FIG. 1 , the dynamic damper 60 is provided on the outer peripheral side of the support fitting 40 . The dynamic damper 60 includes a substantially thin cylindrical holder metal fitting 62 arranged on the outer peripheral side of the support metal fitting 40 , a cylindrical mass body 64 fitted and fixed to the outer peripheral side of the holder metal fitting 62 , and the holder metal fitting 62 . A substantially cylindrical elastic connecting body 66 that elastically connects with the support fitting 40 is provided.

ホルダ金具62は、例えば、上端側に外径が略一定とされた円筒部68が形成されると共に、この円筒部68の下端部から外周側へ延出する鍔部70が屈曲形成されている。質量体64は、各種の金属及びそれらの合金を素材として成形されており、必要に応じて表面に防錆処理等の表面処理が施される。質量体64は、その内径が円筒部68の外径に対応するものとされている。 The holder metal fitting 62 has, for example, a cylindrical portion 68 having a substantially constant outer diameter formed on the upper end side, and a collar portion 70 extending from the lower end portion of the cylindrical portion 68 to the outer peripheral side. . The mass body 64 is molded from various metals and alloys thereof, and is subjected to surface treatment such as rust prevention treatment as necessary. The mass body 64 has an inner diameter corresponding to the outer diameter of the cylindrical portion 68 .

質量体64は、円筒部68の外周側へ嵌挿されると共に、下端面が鍔部70の上面側に突き当てられた状態で、内径が縮小するように外周側から加圧されることによりホルダ金具62に固定される。なお、質量体64の固定は、これに限定されず、焼きばめ、接着、溶接等によりホルダ金具62に固定するようにしても良い。 The mass body 64 is inserted into the outer peripheral side of the cylindrical portion 68 and pressed against the upper surface side of the flange portion 70 with the lower end surface of the mass member 64 pressed against the upper surface side of the flange portion 70 . It is fixed to metal fittings 62 . The fixing of the mass body 64 is not limited to this, and may be fixed to the holder metal fitting 62 by shrink fitting, adhesion, welding, or the like.

弾性連結体66は、円筒状の本体部72を有し、本体部72の下端部から外周側へ延出する延出部74が一体的に形成されている。本体部72は、その内周面が支持金具40の外周面下部側に加硫接着されると共に、外周面が円筒部68の外周面下部側に加硫接着される。 The elastic connecting body 66 has a cylindrical body portion 72, and an extending portion 74 extending from the lower end portion of the body portion 72 to the outer peripheral side is integrally formed. The inner peripheral surface of the main body portion 72 is vulcanization bonded to the lower side of the outer peripheral surface of the support fitting 40 , and the outer peripheral surface thereof is vulcanized to the lower side of the outer peripheral surface of the cylindrical portion 68 .

延出部74は、その下面側が支持金具40におけるダンパストッパ部48へ加硫接着されると共に、上面側がホルダ金具62の鍔部70の内周側に加硫接着されている。これにより、ホルダ金具62と一体化された質量体64が弾性連結体66を介して支持金具40に弾性的に連結される。 The extending portion 74 has its lower surface side vulcanized and bonded to the damper stopper portion 48 of the support metal fitting 40 and its upper surface side vulcanized and bonded to the inner peripheral side of the flange portion 70 of the holder metal fitting 62 . Thereby, the mass body 64 integrated with the holder metal fitting 62 is elastically connected to the support metal fitting 40 via the elastic connecting body 66 .

弾性連結体66には、上端面に断面U字状のすぐり部76が周方向へ延在して形成され、延出部74の外周面にスリット状のすぐり部78が周方向に沿って断続的に形成されている。弾性連結体66では、すぐり部76により主として径方向に沿った剛性が調整され、すぐり部78により主として軸方向に沿った剛性が調整可能とされる。 A hollow portion 76 having a U-shaped cross section is formed on the upper end surface of the elastic connecting body 66 so as to extend in the circumferential direction, and a slit-shaped hollow portion 78 is intermittently formed on the outer peripheral surface of the extending portion 74 along the circumferential direction. is formed In the elastic coupling body 66 , the hollowed portion 76 mainly adjusts the rigidity along the radial direction, and the hollowed portion 78 mainly adjusts the rigidity along the axial direction.

[組付け工程について]
図3は、上述の本実施形態に係るキャブマウント1の組付け工程を示す図である。
図3(a)に示すように、まず、キャブマウント1の本体部10が車体80に取り付けられる。車体80おける本体部10の取付位置には、軸方向へ貫通する円形の取付穴84が設けられており、この取付穴84の内径は、本体部10の筒部13の外径よりも若干大きくされている。
[About the assembly process]
FIG. 3 is a diagram showing the process of assembling the cab mount 1 according to the present embodiment described above.
As shown in FIG. 3( a ), first, the body portion 10 of the cab mount 1 is attached to the vehicle body 80 . A circular mounting hole 84 penetrating in the axial direction is provided at the mounting position of the main body 10 in the vehicle body 80 , and the inner diameter of this mounting hole 84 is slightly larger than the outer diameter of the cylindrical portion 13 of the main body 10 . It is

[本体部組付け工程]
本体部10の外筒金具12における一対のステー部20を車体80上に載置すると共に、一対のステー部20よりも下側の部分を車体80の取付穴84内へ挿入し、取付穴84から下方へ突出させる。車体80には、ステー部20の連結穴26に一致するようにボルト穴88が形成されている。本体部10は、連結穴26及びボルト穴88に固定ボルト96を貫通させるとともにボルト穴88から突出した固定ボルト96にナット98をねじ込むことで、車体80上に締結固定される。
[Main body assembly process]
The pair of stay portions 20 of the outer cylindrical metal fitting 12 of the main body portion 10 is placed on the vehicle body 80, and the portion below the pair of stay portions 20 is inserted into the mounting hole 84 of the vehicle body 80, and the mounting hole 84 is inserted. protrude downward from the A bolt hole 88 is formed in the vehicle body 80 so as to match the connecting hole 26 of the stay portion 20 . The body portion 10 is fastened and fixed on the vehicle body 80 by passing the fixing bolt 96 through the connecting hole 26 and the bolt hole 88 and screwing the nut 98 onto the fixing bolt 96 projecting from the bolt hole 88 .

次に、図3(b)に示すように、車体80の取付穴84とほぼ同軸的に軸方向へ貫通するように、キャブ82のフロア部分に設けられた挿通穴86に、連結ボルト90の軸部94を貫通させた状態で、連結ボルト90の軸部94を内筒金具14の内周側に挿入しつつ車体80に向けて下降させ、図3(c)に示すように、内筒金具14のフランジ部30にキャブ82の下面側を当接させて、連結ボルト90の軸部94を貫通させる。 Next, as shown in FIG. 3(b), the connection bolt 90 is inserted into an insertion hole 86 provided in the floor portion of the cab 82 so as to pass through the mounting hole 84 of the vehicle body 80 in the axial direction substantially coaxially. With the shaft portion 94 passed through, the shaft portion 94 of the connecting bolt 90 is inserted into the inner peripheral side of the inner cylinder metal fitting 14 and lowered toward the vehicle body 80, and as shown in FIG. The lower surface side of the cab 82 is brought into contact with the flange portion 30 of the metal fitting 14, and the shaft portion 94 of the connecting bolt 90 is passed therethrough.

[ダイナミックダンパ仮組付け工程]
次に、図3(d)に示すように、内筒金具14のフランジ部30にキャブ82の下面側を当接させた状態を維持しつつ、内筒金具14を貫通した連結ボルト90のねじ部94aに、ダイナミックダンパ60に一体に設けられた組付け治具50にストッパ金具52を貫通させた状態で、組付け治具50の突起部51を連結ボルト90のねじ部94aに押し付け、軸部94の先端が支持金具40の頂板部42の下面よりも下側に露出するまで挿入する。これにより、ダイナミックダンパ60が、連結ボルト90に係合し、連結ボルト90により保持される。換言すれば、ダイナミックダンパ60が、組付け治具50を介して仮組付けされた状態となる。
[Dynamic damper temporary assembly process]
Next, as shown in FIG. 3(d), while maintaining the state in which the lower surface side of the cab 82 is in contact with the flange portion 30 of the inner cylindrical metal fitting 14, the screw of the connecting bolt 90 passing through the inner cylindrical metal fitting 14 is removed. With the stopper metal fitting 52 passed through the mounting jig 50 integrally provided with the dynamic damper 60 at the portion 94a, the protrusion 51 of the mounting jig 50 is pressed against the threaded portion 94a of the connecting bolt 90, thereby tightening the shaft. Insert until the tip of the portion 94 is exposed below the lower surface of the top plate portion 42 of the support fitting 40 . Thereby, the dynamic damper 60 is engaged with the connecting bolt 90 and held by the connecting bolt 90 . In other words, the dynamic damper 60 is temporarily assembled via the assembly jig 50 .

[ダイナミックダンパ本組付け工程]
次に、図3(e)に示すように、支持金具40の頂板部42の下面よりも下側に露出するねじ部94aにナット92を螺入し、図3(f)に示すように、所定の締結トルクが発生するまで捻じ込む。これにより、キャブマウント1における本体部10が一対の固定ボルト96を介して車体80上に連結固定されると共に、連結ボルト90及びナット92を介して本体部10とダイナミックダンパ60とが連結固定される。また、この状態において、組付け治具50の突起部51は、挿通穴86の内部において連結ボルト90のねじ部94aに係合した状態となる。
[Dynamic damper main assembly process]
Next, as shown in FIG. 3(e), a nut 92 is screwed into the threaded portion 94a exposed below the lower surface of the top plate portion 42 of the support fitting 40, and as shown in FIG. 3(f), Tighten until the specified tightening torque is generated. As a result, the body portion 10 of the cab mount 1 is connected and fixed onto the vehicle body 80 via the pair of fixing bolts 96, and the body portion 10 and the dynamic damper 60 are connected and fixed via the connection bolts 90 and nuts 92. be. In this state, the protrusion 51 of the assembly jig 50 is engaged with the threaded portion 94 a of the connecting bolt 90 inside the insertion hole 86 .

上記構成のキャブマウント1によれば、例えば、本体部10が挿入される車体80の取付穴84よりも、ダイナミックダンパ60の外径が大きくなったとしても、車体80に固定された本体部10に対して、ダイナミックダンパ60を車体80の下側から取り付け、一体化することができる。 According to the cab mount 1 configured as described above, for example, even if the outer diameter of the dynamic damper 60 is larger than the mounting hole 84 of the vehicle body 80 into which the body 10 is inserted, the body 10 is fixed to the vehicle body 80. In contrast, the dynamic damper 60 can be attached from the lower side of the vehicle body 80 and integrated.

また、ダイナミックダンパ60が組付け治具50を介して仮組み付け(組付け治具50の突起部51が連結ボルト90のねじ部94aに係合)可能であることにより、連結ボルト90にナット92を締め付け、ダイナミックダンパ60を本体部10に一体化させる際に、作業者が重量物であるダイナミックダンパ60を継続的に支える必要をなくし、ダイナミックダンパ60の本体部10への組み付け作業を容易にすることができる。また、ダイナミックダンパ60を本体部10から取り外す際にも、仮組付け状態が維持されるため、ナット92を緩めても、ダイナミックダンパ60が連結ボルト90から自然に脱落することなく、ダイナミックダンパ60を取り外すことができる。 Further, the dynamic damper 60 can be temporarily assembled via the assembly jig 50 (the protrusion 51 of the assembly jig 50 engages the threaded portion 94a of the connection bolt 90), so that the connection bolt 90 and the nut 92 is tightened to integrate the dynamic damper 60 with the main body 10, the operator does not need to continuously support the heavy dynamic damper 60, and the work of assembling the dynamic damper 60 to the main body 10 is facilitated. can do. In addition, even when the dynamic damper 60 is removed from the main body 10, the temporary assembled state is maintained. can be removed.

図4は、組付け治具50の他の形態を示す図である。
上記実施形態では、組付け治具50における突起部51を、図2(b)に示すように、円周方向に沿って連続的に設けるものとしたが、例えば、図4(a)に示すように、半径方向に延長するスリット101を複数(ここでは4つ)設けるようにしても良い。この場合、スリット101は、周方向に均等に設けると良い。
FIG. 4 is a diagram showing another form of the assembly jig 50. As shown in FIG.
In the above-described embodiment, the protrusions 51 of the assembly jig 50 are provided continuously along the circumferential direction as shown in FIG. 2(b). , a plurality of (here, four) slits 101 extending in the radial direction may be provided. In this case, the slits 101 are preferably provided evenly in the circumferential direction.

また、突起部51は、図4(b)に示すように、軸方向に沿って複数設けても良い。また、突起部51の断面形状は、三角形状に限らず、例えば、図4(c)に示すように、矩形状としても良い。 Moreover, as shown in FIG. 4B, a plurality of protrusions 51 may be provided along the axial direction. Moreover, the cross-sectional shape of the protrusion 51 is not limited to a triangular shape, and may be a rectangular shape, for example, as shown in FIG. 4(c).

また、図4(d)に示すように、組付け治具50が嵌挿される支持金具40の連結穴44の内周面に、半径方向に延長するスリット103を複数(ここでは4つ)設けるようにしても良い。この場合、スリット103は、周方向に均等に設けると良い。 Further, as shown in FIG. 4(d), a plurality of (here, four) slits 103 extending in the radial direction are provided on the inner peripheral surface of the connecting hole 44 of the support fitting 40 into which the assembly jig 50 is inserted. You can do it. In this case, the slits 103 are preferably provided evenly in the circumferential direction.

また、図4(e)に示すように、支持金具40の連結穴44の内周面の一部を被係止部46とするとともに、これと対応するように組付け治具50の下側係止部58を形成するとともに、下側係止部58とともに支持金具40を挟みこむ保持部105を組付け治具50の外周に設けるようにしても良い。 Further, as shown in FIG. 4(e), a part of the inner peripheral surface of the connecting hole 44 of the support metal fitting 40 is used as a locked portion 46, and the lower side of the assembly jig 50 is formed to correspond to this. A holding portion 105 that sandwiches the support metal fitting 40 together with the lower locking portion 58 may be provided on the outer circumference of the assembly jig 50 while forming the locking portion 58 .

また、図4(f)に示すように、組付け治具50が嵌挿される支持金具40の連結穴44の内周面(被係止部46)は、テーパー状に限定されず、矩形状とし、これに対応して、組付け治具50のテーパー状の下端部(下側係止部58)を矩形状としても良い。この場合、支持金具40及び組付け治具50は、支持金型40の頂板部42の下面と、組付け治具50の下面とが面一となるようにすると良い。 Further, as shown in FIG. 4(f), the inner peripheral surface (locked portion 46) of the connecting hole 44 of the support fitting 40 into which the assembly jig 50 is inserted is not limited to a tapered shape, but a rectangular shape. , and correspondingly, the tapered lower end portion (lower engaging portion 58) of the assembly jig 50 may be formed in a rectangular shape. In this case, the support metal fitting 40 and the assembly jig 50 are preferably arranged such that the bottom surface of the top plate portion 42 of the support mold 40 and the bottom surface of the assembly jig 50 are flush with each other.

1 キャブマウント、10 本体部、12 外筒金具(外筒部材)、
14 内筒金具(内筒部材)、16 ゴム状弾性体、50 組付け治具、
60 ダイナミックダンパ、62 ホルダ金具、64 質量体、
80 車体(振動発生部)、82 キャブ(振動受部)。
1 cab mount, 10 main body, 12 outer cylinder fitting (outer cylinder member),
14 inner cylindrical metal fitting (inner cylindrical member), 16 rubber-like elastic body, 50 assembly jig,
60 dynamic damper, 62 holder metal fitting, 64 mass body,
80 vehicle body (vibration generating part), 82 cab (vibration receiving part).

Claims (3)

振動発生部及び振動受部の一方となる部材と振動発生部及び振動受部の他方となる部材との間で荷重を支持すると共に振動伝達を防止する防振支持装置であって、
振動発生部及び振動受部の一方に連結される外筒部材と、
前記外筒部材の内周側に配置され、振動発生部及び振動受部の他方に連結される内筒部材と、
前記外筒部材と前記内筒部材との間に配置され、前記外筒部材と前記内筒部材とを弾性的に連結したゴム状弾性体と、
を備えた本体部と、
前記内筒部材の軸方向の一端側に配置された筒状の支持部材と、
前記支持部材の外周側に配置された質量体と、
前記支持部材及び前記質量体にそれぞれ固着され、該質量体を前記支持部材へ弾性的に連結した弾性連結体と、
を備えたダイナミックダンパと、
前記内筒部材及び前記支持部材に挿通され、前記支持部材側から締結されるナットにより前記本体部とダイナミックダンパとを締結結合するボルトと、
前記支持部材側に設けられ、前記内筒部材内において前記ボルトのねじ部と係合する突起部を有する組付け治具と、
を備えたことを特徴とする防振支持装置。
A vibration isolation support device that supports a load and prevents transmission of vibration between a member that is one of the vibration generating section and the vibration receiving section and a member that is the other of the vibration generating section and the vibration receiving section,
an outer cylindrical member connected to one of the vibration generating portion and the vibration receiving portion;
an inner cylindrical member disposed on the inner peripheral side of the outer cylindrical member and connected to the other of the vibration generating portion and the vibration receiving portion;
a rubber-like elastic body disposed between the outer cylinder member and the inner cylinder member and elastically connecting the outer cylinder member and the inner cylinder member;
a main body comprising
a tubular support member disposed on one end side of the inner tubular member in the axial direction;
a mass body disposed on the outer peripheral side of the support member;
an elastic connector fixed to each of the support member and the mass body and elastically connecting the mass body to the support member;
a dynamic damper with
a bolt that is inserted through the inner cylindrical member and the support member and that fastens and couples the main body and the dynamic damper with a nut that is fastened from the support member side;
an assembly jig provided on the side of the support member and having a protrusion that engages with the threaded portion of the bolt in the inner cylindrical member;
An anti-vibration support device comprising:
前記組付け治具は、樹脂からなることを特徴とする請求項1に記載の防振支持装置。 2. The anti-vibration support device according to claim 1, wherein said mounting jig is made of resin. 前記突起部は、軸方向に沿う断面形状が三角形状とされたことを特徴とする請求項1又は請求項2に記載の防振支持装置。 3. The anti-vibration support device according to claim 1, wherein the protrusion has a triangular cross-sectional shape along the axial direction.
JP2021163687A 2021-10-04 2021-10-04 Vibration isolation support device Pending JP2023054685A (en)

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