JP2018071749A - Vibration control device - Google Patents

Vibration control device Download PDF

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Publication number
JP2018071749A
JP2018071749A JP2016215780A JP2016215780A JP2018071749A JP 2018071749 A JP2018071749 A JP 2018071749A JP 2016215780 A JP2016215780 A JP 2016215780A JP 2016215780 A JP2016215780 A JP 2016215780A JP 2018071749 A JP2018071749 A JP 2018071749A
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peripheral surface
stopper
outer peripheral
stopper member
shaft member
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JP2016215780A
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JP6740087B2 (en
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翼 内田
Tsubasa Uchida
翼 内田
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Toyo Tire Corp
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Toyo Tire and Rubber Co Ltd
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Priority to JP2016215780A priority Critical patent/JP6740087B2/en
Priority to CN201710696498.3A priority patent/CN108019454B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • F16F7/108—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted on plastics springs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Springs (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a vibration control device capable of preventing generation of abnormal noise.SOLUTION: In a vibration control device, a first member is fixed to an edge section of an axial member and a second member is fixed to a cylinder member. A stopper member is arranged between the cylinder member and the first member. A vibration control base has a first section positioned inside the cylinder member in a radial direction and a second section positioned outside the first section in an axial direction. The second section has a convex section outwardly protruded from a hole section of the stopper member in the radial direction. A distance from an edge face of the axial member in the axial direction thereof to the convex section is equal to a length of the stopper member in the axial direction or less, and thereby movement of the stopper member in the axial direction can be regulated. Thus, the vibration control device can prevent abnormal noise generated by collision of the stopper member with the cylinder member, the first member or the second member.SELECTED DRAWING: Figure 1

Description

本発明は防振装置に関し、特に軸部材と筒部材との軸方向の相対変位を規制するストッパ部材を備える防振装置に関するものである。   The present invention relates to an anti-vibration device, and more particularly to an anti-vibration device including a stopper member that restricts relative axial displacement between a shaft member and a cylindrical member.

自動車等の車両に配置された第１部材に端部が固定される軸部材と、第２部材に固定される筒部材と、をゴム状弾性体からなる防振基体が結合する防振装置において、第１部材と筒部材との間にストッパ部材が介在するものが知られている（特許文献１及び２）。特許文献１及び２に開示される技術では、第２部材や筒部材と第１部材との間に介在するストッパ部材が、筒部材に対する軸部材の軸方向の相対変位を規制する。   In a vibration isolator in which a shaft member whose end is fixed to a first member arranged in a vehicle such as an automobile and a cylindrical member fixed to a second member are coupled to a vibration isolating base made of a rubber-like elastic body There are known ones in which a stopper member is interposed between a first member and a cylindrical member (Patent Documents 1 and 2). In the techniques disclosed in Patent Documents 1 and 2, the stopper member interposed between the second member or the tubular member and the first member regulates the relative displacement in the axial direction of the shaft member with respect to the tubular member.

特開２０００−２０５３２３号公報JP 2000-205323 A 特開２０１０−８４８０７号公報JP 2010-84807 A

しかしながら上述した従来の技術では、第２部材と第１部材とがストッパ部材を拘束しない場合には、ストッパ部材は軸方向に移動できるので、車両の走行時に筒部材や第２部材、第１部材にストッパ部材が衝突して異音が発生するおそれがある。   However, in the above-described conventional technique, when the second member and the first member do not restrain the stopper member, the stopper member can move in the axial direction, so that the cylinder member, the second member, and the first member can be moved when the vehicle travels. There is a risk that the stopper member will collide with it and generate abnormal noise.

本発明は上述した問題点を解決するためになされたものであり、異音の発生を抑制できる防振装置を提供することを目的としている。   The present invention has been made to solve the above-described problems, and an object thereof is to provide a vibration isolator capable of suppressing the generation of abnormal noise.

課題を解決するための手段および発明の効果Means for Solving the Problems and Effects of the Invention

この目的を達成するために請求項１記載の防振装置によれば、第１部材に軸部材の端部が固定され、軸部材の径方向の外側に配置される筒部材が、第１部材とは異なる第２部材に固定される。ゴム状弾性体からなる防振基体が、筒部材の内周面と軸部材の外周面とを結合する。軸部材の端部がストッパ部材の穴部を貫通し、ストッパ部材は筒部材と第１部材との間に配置される。防振基体は、筒部材の径方向の内側に第１部が位置し、第１部の軸方向の外側に第２部が位置する。   In order to achieve this object, in the vibration isolator according to claim 1, the end of the shaft member is fixed to the first member, and the cylindrical member disposed on the outer side in the radial direction of the shaft member is the first member. It is fixed to a different second member. A vibration-proof base made of a rubber-like elastic body connects the inner peripheral surface of the cylindrical member and the outer peripheral surface of the shaft member. The end of the shaft member passes through the hole of the stopper member, and the stopper member is disposed between the tubular member and the first member. The anti-vibration base has a first portion located inside the cylindrical member in the radial direction and a second portion located outside the first portion in the axial direction.

補強リングの全体がゴム状弾性体からなる弾性部で覆われたストッパ部材は、穴部の変形が補強リングに拘束されるので、軸部材の端部を挿入するときに穴部が広がり難い。ストッパ部材の組付け性を確保するためには、軸部材に対して穴部を大きめにするのが好ましい。組付け性を優先すると、その反面、ストッパ部材が軸方向に移動し易くなる。   In the stopper member whose entire reinforcing ring is covered with an elastic portion made of a rubber-like elastic body, deformation of the hole is constrained by the reinforcing ring, so that the hole is difficult to expand when the end of the shaft member is inserted. In order to ensure the ease of assembly of the stopper member, it is preferable to make the hole portion larger than the shaft member. If priority is given to assembly, the stopper member easily moves in the axial direction.

ストッパ部材の軸方向の移動を防ぐために、第２部は、ストッパ部材の穴部よりも径方向の外側に突出する凸部が設けられている。軸部材の軸方向の端面から凸部までの距離はストッパ部材の軸方向の長さ以下なので、第１部材に軸部材が固定された状態で、第１部材および凸部によってストッパ部材の軸方向の移動を規制できる。よって、車両の走行時に筒部材や第１部材、第２部材にストッパ部材が衝突して発生する異音を抑制できる効果がある。   In order to prevent the stopper member from moving in the axial direction, the second portion is provided with a convex portion projecting outward in the radial direction from the hole portion of the stopper member. Since the distance from the axial end surface of the shaft member to the convex portion is equal to or less than the axial length of the stopper member, the axial direction of the stopper member is secured by the first member and the convex portion in a state where the shaft member is fixed to the first member. Can be controlled. Therefore, there is an effect that noise generated when the stopper member collides with the cylindrical member, the first member, and the second member during traveling of the vehicle can be suppressed.

請求項２記載の防振装置によれば、軸部材の軸方向の中央に第１外周面が位置し、第１外周面に連絡する第２外周面に第２部が結合する。第２外周面よりも軸方向の外側に位置する第３外周面の外径は、第１外周面の外径よりも大きく、凸部は第３外周面よりも径方向の外側に突出する。その結果、第２外周面を持たない軸部材に比べ、第２部が軸部材に結合する面積を大きくできるので、請求項１の効果に加え、凸部によって軸方向の力が作用する第２部の引き剥がし強さを大きくできる効果がある。   According to the vibration isolator of the second aspect, the first outer peripheral surface is located at the center in the axial direction of the shaft member, and the second portion is coupled to the second outer peripheral surface communicating with the first outer peripheral surface. The outer diameter of the third outer peripheral surface located on the outer side in the axial direction from the second outer peripheral surface is larger than the outer diameter of the first outer peripheral surface, and the convex portion protrudes outward in the radial direction from the third outer peripheral surface. As a result, since the area where the second portion is coupled to the shaft member can be increased as compared with the shaft member having no second outer peripheral surface, in addition to the effect of claim 1, the second force in which an axial force is applied by the convex portion. This has the effect of increasing the peel strength of the part.

請求項３記載の防振装置によれば、ストッパ部材は、穴部と軸方向の端面とを第１凹部が連絡する。端面における第１凹部の径方向の外側の縁は、凸部よりも径方向の外側に位置する。第１凹部が穴部に連絡するので、軸部材をストッパ部材の穴部に挿入し易くできる。よって、請求項１又は２の効果に加え、ストッパ部材の組付け性を向上できる効果がある。   According to the vibration isolator of the third aspect, the first recess communicates the hole and the axial end surface of the stopper member. The outer edge in the radial direction of the first concave portion on the end face is located on the outer side in the radial direction than the convex portion. Since the first recess communicates with the hole, the shaft member can be easily inserted into the hole of the stopper member. Therefore, in addition to the effect of Claim 1 or 2, there exists an effect which can improve the assembly | attachment property of a stopper member.

請求項４記載の防振装置によれば、ストッパ部材は、穴部の一部が径方向の外側へ凹む第２凹部を備える。第２凹部は、ストッパ部材の軸方向の端面から離れた位置に形成されると共に凸部が嵌合する。よって、請求項１から３のいずれかの効果に加え、車両への防振装置の組付け時に、ストッパ部材が軸部材から脱落しないようにできる効果がある。   According to the vibration isolator of the fourth aspect, the stopper member includes the second recessed portion in which a part of the hole portion is recessed outward in the radial direction. A 2nd recessed part is formed in the position away from the end surface of the axial direction of a stopper member, and a convex part fits. Therefore, in addition to the effect of any one of claims 1 to 3, there is an effect that the stopper member can be prevented from falling off the shaft member when the vibration isolator is assembled to the vehicle.

本発明の第１実施の形態における防振装置の断面図である。It is sectional drawing of the vibration isolator in 1st Embodiment of this invention. 防振ブッシュの断面図である。It is sectional drawing of a vibration proof bush. 防振ブッシュの側面図である。It is a side view of a vibration proof bush. ストッパ部材の断面図である。It is sectional drawing of a stopper member. 図１のＶで示す部分を拡大して示した防振装置の断面図である。It is sectional drawing of the vibration isolator which expanded and showed the part shown by V of FIG. 第２実施の形態における防振ブッシュの側面図である。It is a side view of the vibration proof bush in 2nd Embodiment. 第３実施の形態における防振装置の断面図である。It is sectional drawing of the vibration isolator in 3rd Embodiment. ストッパ部材の断面図である。It is sectional drawing of a stopper member. 図７のＩＸで示す部分を拡大して示した防振装置の断面図である。It is sectional drawing of the vibration isolator which expanded and showed the part shown by IX of FIG. 第４実施の形態における防振装置の断面図である。It is sectional drawing of the vibration isolator in 4th Embodiment. 防振ブッシュの断面図である。It is sectional drawing of a vibration proof bush. ストッパ部材の断面図である。It is sectional drawing of a stopper member. 図１０のＸＩＩＩで示す部分を拡大して示した防振装置の断面図である。It is sectional drawing of the vibration isolator which expanded and showed the part shown by XIII of FIG.

以下、本発明の好ましい実施形態について添付図面を参照して説明する。図１から図５を参照して第１実施の形態について説明する。図１は本発明の第１実施の形態における防振装置１０の断面図である。図１は第１部材１及び第２部材２に防振装置１０が取り付けられた状態が図示されている。   Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The first embodiment will be described with reference to FIGS. FIG. 1 is a sectional view of a vibration isolator 10 according to the first embodiment of the present invention. FIG. 1 shows a state in which a vibration isolator 10 is attached to the first member 1 and the second member 2.

図１に示すように防振装置１０は、防振ブッシュ１１とストッパ部材４０とを備えている。本実施の形態における防振ブッシュ１１は、自動車の車体に取り付けられたブラケットからなる第１部材１と、サスペンション機構などに用いられるアームからなる第２部材２とを弾性的に結合する。防振ブッシュ１１は、軸部材１２と、軸部材１２と離隔して軸部材１２を囲み軸部材１２の径方向の外側に配置される筒部材２０と、軸部材１２と筒部材２０とを結合するゴム状弾性体からなる防振基体３０とを備えている。   As shown in FIG. 1, the vibration isolator 10 includes a vibration isolating bush 11 and a stopper member 40. The anti-vibration bush 11 in the present embodiment elastically couples the first member 1 made of a bracket attached to the vehicle body of the automobile and the second member 2 made of an arm used for a suspension mechanism or the like. The anti-vibration bush 11 couples the shaft member 12, the cylindrical member 20 that is spaced apart from the shaft member 12, surrounds the shaft member 12, and is disposed on the radially outer side of the shaft member 12, and the shaft member 12 and the cylindrical member 20. And an anti-vibration base 30 made of a rubber-like elastic body.

図２は防振ブッシュ１１の軸線Ｏを含む断面図である。図２に示すように軸部材１２は、軸方向（図２左右方向）の端面１３に開口する穴部１４が形成された金属製の部材である。穴部１４には、軸部材１２を第１部材１に固定するためのボルト（図示せず）が挿通される。軸部材１２は、ボルト（図示せず）が締結されることにより、第１部材１（図１参照）に端面１３を密着させた状態で第１部材１に固定される。   FIG. 2 is a sectional view including the axis O of the vibration isolating bush 11. As shown in FIG. 2, the shaft member 12 is a metal member in which a hole portion 14 is formed in the end surface 13 in the axial direction (left-right direction in FIG. 2). A bolt (not shown) for fixing the shaft member 12 to the first member 1 is inserted into the hole portion 14. The shaft member 12 is fixed to the first member 1 with a bolt (not shown) fastened thereto so that the end surface 13 is in close contact with the first member 1 (see FIG. 1).

軸部材１２は、外周面が、軸方向の中央に位置する第１外周面１５と、第１外周面１５に連絡し第１外周面１５の軸方向の外側に位置する第２外周面１６と、第２外周面１６の軸方向の外側に位置し端面１３に連絡する第３外周面１７とを備えている。第３外周面１７は、外径が、第１外周面１５の外径よりも大きく設定されている。第２外周面１６は、第３外周面１７に連絡する軸方向の外側の端部に、径方向（図２上下方向）の外側に凹の湾曲面１８が形成されている。   The shaft member 12 has a first outer peripheral surface 15 whose outer peripheral surface is located at the center in the axial direction, and a second outer peripheral surface 16 that is in communication with the first outer peripheral surface 15 and is located outside the first outer peripheral surface 15 in the axial direction. And a third outer peripheral surface 17 that is located outside the second outer peripheral surface 16 in the axial direction and communicates with the end surface 13. The third outer peripheral surface 17 is set to have an outer diameter larger than the outer diameter of the first outer peripheral surface 15. The second outer peripheral surface 16 is formed with a concave curved surface 18 on the outer side in the radial direction (the vertical direction in FIG. 2) at the outer end in the axial direction communicating with the third outer peripheral surface 17.

筒部材２０は、軸部材１２よりも直径が大きい円筒状の金属製の部材である。筒部材２０は、第２部材２（図１参照）に圧入される。筒部材２０は、軸方向の長さが、軸部材１２の軸方向の長さ（端面１３間の距離）より小さく設定されている。筒部材２０の内周面２１及び軸部材１２の第１外周面１５及び第２外周面１６に、ゴム状弾性体からなる防振基体３０が加硫接着されている。   The cylindrical member 20 is a cylindrical metal member having a diameter larger than that of the shaft member 12. The cylinder member 20 is press-fitted into the second member 2 (see FIG. 1). The cylindrical member 20 is set such that the axial length is smaller than the axial length of the shaft member 12 (distance between the end faces 13). A vibration-proof base 30 made of a rubber-like elastic body is vulcanized and bonded to the inner peripheral surface 21 of the tubular member 20 and the first outer peripheral surface 15 and the second outer peripheral surface 16 of the shaft member 12.

防振基体３０は、筒部材２０の径方向の内側に位置する第１部３１と、第１部３１の軸方向の外側に位置する第２部３２とを備えている。第１部３１は、筒部材２０の内周面２１と軸部材１２の第１外周面１５とに結合する。第２部３２は、第１部３１と一体成形されると共に軸部材１２の第２外周面１６に結合する。第２部３２は、軸方向の内側の部分３２ａの外径よりも軸方向の外側の縁３３の外径が小さい。   The anti-vibration base 30 includes a first part 31 located on the inner side in the radial direction of the cylindrical member 20 and a second part 32 located on the outer side in the axial direction of the first part 31. The first portion 31 is coupled to the inner peripheral surface 21 of the tubular member 20 and the first outer peripheral surface 15 of the shaft member 12. The second portion 32 is integrally formed with the first portion 31 and is coupled to the second outer peripheral surface 16 of the shaft member 12. The second portion 32 has an outer diameter of the outer edge 33 in the axial direction smaller than the outer diameter of the inner portion 32a in the axial direction.

第２部３２は、縁３３よりも軸方向の内側の第２部３２の外周面に凸部３４が設けられている。凸部３４は第２部３２と一体成形されており、径方向の外側へ向かって突出する。軸線Ｏを含む断面（図２）において、凸部３４の外周面３５は軸線Ｏと平行なので、防振基体３０を加硫成形する成形型（図示せず）からの凸部３４の離型を容易にできる。第２部３２は、縁３３の外径が第３外周面１７の外径と同じ大きさなので、凸部３４は、第３外周面１７よりも径方向の外側に突出する。   The second portion 32 is provided with a convex portion 34 on the outer peripheral surface of the second portion 32 on the inner side in the axial direction than the edge 33. The convex part 34 is integrally formed with the second part 32 and projects outward in the radial direction. In the cross section including the axis O (FIG. 2), since the outer peripheral surface 35 of the convex portion 34 is parallel to the axis O, the release of the convex portion 34 from the molding die (not shown) for vulcanization molding of the vibration isolating base 30 is performed. Easy to do. Since the outer diameter of the edge 33 of the second portion 32 is the same as the outer diameter of the third outer peripheral surface 17, the convex portion 34 protrudes outward in the radial direction from the third outer peripheral surface 17.

図３は防振ブッシュ１１の側面図である。図３に示すように凸部３４は、軸線Ｏの周りに連続する円環状に形成されている。   FIG. 3 is a side view of the vibration isolating bush 11. As shown in FIG. 3, the convex portion 34 is formed in an annular shape continuous around the axis O.

図４はストッパ部材４０の軸線Ｏを含む断面図である。図４に示すようにストッパ部材４０は、円環状に形成された補強リング４１と、補強リング４１の全体を覆うゴム状弾性体からなる弾性部４２とを備えている。補強リング４１は、弾性部４２を構成するゴム状弾性体よりも硬い部材により形成されている。本実施の形態では、補強リング４１は金属製である。ストッパ部材４０は、軸方向の端面４３に開口する穴部４４が形成されている。車両への防振装置１０の組付け前は、接着剤などによってストッパ部材４０を軸部材１２に固定できる。   FIG. 4 is a cross-sectional view including the axis O of the stopper member 40. As shown in FIG. 4, the stopper member 40 includes a reinforcing ring 41 formed in an annular shape and an elastic portion 42 made of a rubber-like elastic body that covers the entire reinforcing ring 41. The reinforcing ring 41 is formed of a member that is harder than the rubber-like elastic body that constitutes the elastic portion 42. In the present embodiment, the reinforcing ring 41 is made of metal. The stopper member 40 is formed with a hole 44 that opens in an end face 43 in the axial direction. Before the vibration isolator 10 is assembled to the vehicle, the stopper member 40 can be fixed to the shaft member 12 with an adhesive or the like.

図５は図１のＶで示す部分を拡大して示した防振装置１０の断面図である。図５に示すように、穴部４４に軸部材１２の端部が挿入された状態で、ストッパ部材４０は筒部材２０と第１部材１との間に配置される。凸部３４はストッパ部材４０の穴部４４よりも径方向の外側に突出する。軸部材１２の端面１３から凸部３４までの距離は、ストッパ部材４０の軸方向の長さ（端面４３間の距離）以下に設定されている。従って、軸部材１２の端面１３を第１部材１に密着させて軸部材１２が第１部材１に固定されると、第１部材１と凸部３４との間にストッパ部材４０が挟まれる。よって、ストッパ部材４０の軸方向の移動を規制できる。その結果、自動車の走行時に筒部材２０や第１部材１、第２部材２にストッパ部材４０が衝突して発生する異音を抑制できる。   FIG. 5 is a cross-sectional view of the vibration isolator 10 in which the portion indicated by V in FIG. 1 is enlarged. As shown in FIG. 5, the stopper member 40 is disposed between the tubular member 20 and the first member 1 with the end portion of the shaft member 12 inserted into the hole 44. The protrusion 34 protrudes outward in the radial direction from the hole 44 of the stopper member 40. The distance from the end surface 13 of the shaft member 12 to the convex portion 34 is set to be equal to or less than the length of the stopper member 40 in the axial direction (distance between the end surfaces 43). Therefore, when the end surface 13 of the shaft member 12 is brought into close contact with the first member 1 and the shaft member 12 is fixed to the first member 1, the stopper member 40 is sandwiched between the first member 1 and the convex portion 34. Therefore, the movement of the stopper member 40 in the axial direction can be restricted. As a result, it is possible to suppress abnormal noise generated when the stopper member 40 collides with the tubular member 20, the first member 1, and the second member 2 when the automobile is running.

なお、軸部材１２の端面１３から凸部３４までの距離が、ストッパ部材４０の軸方向の長さ（端面４３間の距離）よりも小さくなるように設定されると、凸部３４が軸方向に弾性圧縮する反力によってストッパ部材４０を第１部材１に密着させることができる。ストッパ部材４０の軸方向の移動を規制する効果が高まるので、より好ましい。   When the distance from the end surface 13 of the shaft member 12 to the convex portion 34 is set to be smaller than the axial length of the stopper member 40 (distance between the end surfaces 43), the convex portion 34 is axially The stopper member 40 can be brought into close contact with the first member 1 by the reaction force that is elastically compressed. This is more preferable because the effect of restricting the movement of the stopper member 40 in the axial direction is enhanced.

ここで、補強リング４１の全体がゴム状弾性体からなる弾性部４２で覆われたストッパ部材４０は、補強リング４１が内蔵されていないゴム製のストッパ部材に比べて、穴部４４の弾性変形量が少ない。軸部材１２の端部を挿入するときに穴部４４が広がり難いので、ストッパ部材４０の組付け性を確保するために、軸部材１２に対して穴部４４を大きめにするのが好ましい。ストッパ部材４０の組付け性を優先すると、軸部材１２と穴部４４との隙間が大きくなるので、ストッパ部材４０が軸方向に移動し易くなる。   Here, the stopper member 40 in which the entire reinforcing ring 41 is covered with the elastic portion 42 made of a rubber-like elastic body is more elastically deformed in the hole portion 44 than the rubber stopper member in which the reinforcing ring 41 is not incorporated. The amount is small. Since the hole 44 is difficult to expand when the end of the shaft member 12 is inserted, the hole 44 is preferably made larger than the shaft member 12 in order to secure the assembling property of the stopper member 40. If priority is given to the assembling property of the stopper member 40, the gap between the shaft member 12 and the hole 44 is increased, so that the stopper member 40 is easily moved in the axial direction.

これに対して本実施の形態によれば、凸部３４によってストッパ部材４０の軸方向の移動を規制できるので、ストッパ部材４０の組付け性を確保しつつ、筒部材２０や第１部材１、第２部材２にストッパ部材４０が衝突して発生する異音を抑制できる。従って、ストッパ部材４０の穴部４４と軸部材１２とのはめあいを「しまりばめ」にする必要がなく、すきまばめ（軸部材１２と穴部４４とに隙間がある）や中間ばめにできる。   On the other hand, according to the present embodiment, since the axial movement of the stopper member 40 can be restricted by the convex portion 34, the cylindrical member 20 and the first member 1, Abnormal noise generated when the stopper member 40 collides with the second member 2 can be suppressed. Therefore, the fit between the hole 44 of the stopper member 40 and the shaft member 12 does not have to be “fitting fit”, and the clearance fit (there is a gap between the shaft member 12 and the hole 44) or the intermediate fit. it can.

凸部３４は、防振ブッシュ１１の特性や耐久性に影響を与え難い第２部３２に形成されているので、防振ブッシュ１１の特性のチューニングや耐久性の確保は、従来の防振ブッシュと同様に行うことができる。   Since the convex part 34 is formed in the 2nd part 32 which is hard to affect the characteristic and durability of the vibration isolating bushing 11, the characteristic tuning of the vibration isolating bushing 11 and the securing of the durability are the conventional anti-vibration bushing. Can be done as well.

軸部材１２は、防振基体３０の第２部３２が結合する第２外周面１６よりも軸方向の外側に第３外周面１７が位置し、第２外周面１６の湾曲面１８が第３外周面１７に連絡する。その結果、第３外周面１７及び湾曲面１８を持たない軸部材に比べ、面（湾曲面１８）が湾曲する分だけ第２部３２が軸部材１２に結合する面積を大きくできる。第２部３２は、凸部３４を介してストッパ部材４０から引き剥がしの力を受けるが、第２外周面１６によって、第２部３２が軸部材１２に結合する面積を大きくできるので、第２外周面１６（湾曲面１８）を持たない軸部材に比べて第２部３２の引き剥がし強さを大きくできる。   In the shaft member 12, the third outer peripheral surface 17 is positioned on the outer side in the axial direction from the second outer peripheral surface 16 to which the second portion 32 of the vibration isolation base 30 is coupled, and the curved surface 18 of the second outer peripheral surface 16 is the third. Contact the outer peripheral surface 17. As a result, the area where the second portion 32 is coupled to the shaft member 12 can be increased by the amount of curvature of the surface (curved surface 18) as compared to the shaft member that does not have the third outer peripheral surface 17 and the curved surface 18. The second portion 32 receives a peeling force from the stopper member 40 via the convex portion 34, but the second outer peripheral surface 16 can increase the area where the second portion 32 is coupled to the shaft member 12. The peeling strength of the second portion 32 can be increased compared to a shaft member that does not have the outer peripheral surface 16 (curved surface 18).

第２部３２の縁３３よりも軸方向の内側に凸部３４が設けられているので、凸部３４と第１部材１との間にストッパ部材４０が配置された状態では、第２部３２の縁３３及び第３外周面１７の径方向の外側にストッパ部材４０が位置する。第２部３２の縁３３の径方向の外側にストッパ部材４０が存在するので、引き剥がしの力を受けた第２部３２の縁３３を捲れ難くできる。その結果、第２部３２をさらに引き剥がし難くできる。   Since the convex portion 34 is provided on the inner side in the axial direction than the edge 33 of the second portion 32, the second portion 32 is in a state where the stopper member 40 is disposed between the convex portion 34 and the first member 1. The stopper member 40 is located on the outer side of the edge 33 and the third outer peripheral surface 17 in the radial direction. Since the stopper member 40 exists on the outer side in the radial direction of the edge 33 of the second portion 32, the edge 33 of the second portion 32 that has been subjected to the peeling force can be made difficult to bend. As a result, the second part 32 can be further difficult to peel off.

次に図６を参照して第２実施の形態について説明する。第１実施の形態では、凸部３４が、軸線Ｏの周りに連続した環状に形成される場合について説明した。これに対し第２実施の形態では、凸部５２が、軸線Ｏの周りに断続した状態に形成される場合について説明する。なお、第１実施の形態と同一の部分については、同一の符号を付して以下の説明を省略する。図６は第２実施の形態における防振ブッシュ５１の側面図である。防振ブッシュ５１は、第１実施の形態で説明した防振装置１０の防振ブッシュ１１に代えて、第１部材１と第２部材２とを弾性的に結合する。   Next, a second embodiment will be described with reference to FIG. In 1st Embodiment, the convex part 34 demonstrated the case where it formed in the cyclic | annular form continuous around the axis line O. As shown in FIG. On the other hand, in 2nd Embodiment, the case where the convex part 52 is formed in the state which interrupted around the axis line O is demonstrated. In addition, about the part same as 1st Embodiment, the same code | symbol is attached | subjected and the following description is abbreviate | omitted. FIG. 6 is a side view of the vibration isolating bush 51 in the second embodiment. The anti-vibration bush 51 elastically couples the first member 1 and the second member 2 in place of the anti-vibration bush 11 of the anti-vibration device 10 described in the first embodiment.

図６に示すように、防振ブッシュ５１は、軸部材１２と、軸部材１２と離隔して軸部材１２を囲み軸部材１２の径方向の外側に配置される筒部材２０と、軸部材１２と筒部材２０とを結合するゴム状弾性体からなる防振基体３０とを備えている。防振基体３０は、筒部材２０の径方向の内側に形成される第１部３１（図２参照）と、第１部３１の軸方向の外側に一体成形される第２部３２とを備えている。第２部３２は、径方向の外側に突出する凸部５２を備えている。   As shown in FIG. 6, the anti-vibration bush 51 includes a shaft member 12, a cylindrical member 20 that is spaced apart from the shaft member 12, surrounds the shaft member 12, and is disposed on the outer side in the radial direction of the shaft member 12, and the shaft member 12. And a vibration-proof base 30 made of a rubber-like elastic body that joins the cylindrical member 20 to each other. The anti-vibration base 30 includes a first part 31 (see FIG. 2) formed on the inner side in the radial direction of the cylindrical member 20 and a second part 32 integrally formed on the outer side in the axial direction of the first part 31. ing. The second portion 32 includes a convex portion 52 that protrudes outward in the radial direction.

凸部５２は、第１部材１との間でストッパ部材４０の軸方向の移動を規制する。凸部５２は、軸線Ｏを挟んで対向する４か所に形成されている。第２実施の形態における防振ブッシュ５１は凸部５２を備えているので、防振ブッシュ５１を備える防振装置は、第１実施の形態と同様の作用効果を実現できる。   The convex portion 52 restricts the movement of the stopper member 40 in the axial direction with the first member 1. The convex portions 52 are formed at four locations facing each other across the axis O. Since the anti-vibration bush 51 in the second embodiment includes the convex portion 52, the anti-vibration device including the anti-vibration bush 51 can achieve the same functions and effects as those in the first embodiment.

次に図７から図９を参照して第３実施の形態について説明する。第３実施の形態では、第１実施の形態における防振装置１０で説明したストッパ部材４０に代えて、ストッパ部材７０が設けられた防振装置６０について説明する。なお、第１実施の形態と同一の部分については、同一の符号を付して以下の説明を省略する。図７は第３実施の形態における防振装置６０の断面図である。   Next, a third embodiment will be described with reference to FIGS. In the third embodiment, a vibration isolator 60 provided with a stopper member 70 will be described in place of the stopper member 40 described in the vibration isolator 10 in the first embodiment. In addition, about the part same as 1st Embodiment, the same code | symbol is attached | subjected and the following description is abbreviate | omitted. FIG. 7 is a cross-sectional view of the vibration isolator 60 in the third embodiment.

図７に示すように防振装置６０は、防振ブッシュ１１とストッパ部材７０とを備えている。ストッパ部材７０は、軸部材１２の端部が貫通した状態で、第１部材１と筒部材２０との間に配置される。   As shown in FIG. 7, the vibration isolator 60 includes a vibration isolating bush 11 and a stopper member 70. The stopper member 70 is disposed between the first member 1 and the tubular member 20 with the end portion of the shaft member 12 passing therethrough.

図８はストッパ部材７０の軸線Ｏを含む断面図である。図８に示すようにストッパ部材７０は、円環状に形成された補強リング７１と、補強リング７１の全体を覆うゴム状弾性体からなる弾性部７２とを備えている。補強リング７１は、弾性部７２を構成するゴム状弾性体よりも硬い金属製である。ストッパ部材７０は、軸方向の端面７３に開口する穴部７４が形成されている。弾性部７２は、端面７３と穴部７４とを連絡し軸線Ｏに対して傾斜する第１凹部７５が形成されている。第１凹部７５は、両方の端面７３において穴部７４の全周に亘って設けられている。車両への防振装置６０の組付け前は、接着剤などによってストッパ部材７０を軸部材１２に固定できる。   FIG. 8 is a cross-sectional view including the axis O of the stopper member 70. As shown in FIG. 8, the stopper member 70 includes a reinforcing ring 71 formed in an annular shape and an elastic portion 72 made of a rubber-like elastic body that covers the entire reinforcing ring 71. The reinforcing ring 71 is made of a metal that is harder than the rubber-like elastic body constituting the elastic portion 72. The stopper member 70 is formed with a hole 74 that opens in an end surface 73 in the axial direction. The elastic portion 72 is formed with a first recess 75 that connects the end surface 73 and the hole 74 and is inclined with respect to the axis O. The first recess 75 is provided over the entire circumference of the hole 74 at both end faces 73. Before assembling the vibration isolator 60 to the vehicle, the stopper member 70 can be fixed to the shaft member 12 with an adhesive or the like.

図９は図７のＩＸで示す部分を拡大して示した防振装置６０の断面図である。図９に示すように、穴部７４に軸部材１２の端部が挿入された状態で、ストッパ部材７０は筒部材２０と第１部材１との間に配置される。凸部３４はストッパ部材７０の穴部７４よりも径方向の外側に突出する。端面７３における第１凹部７５の径方向の外側の縁７６は、凸部３４よりも径方向の外側に位置する。軸部材１２の端面１３から凸部３４までの距離は、ストッパ部材７０の軸方向の長さ（端面７３間の距離）より小さく設定されている。   FIG. 9 is a cross-sectional view of the vibration isolator 60 in which the portion indicated by IX in FIG. 7 is enlarged. As shown in FIG. 9, the stopper member 70 is disposed between the tubular member 20 and the first member 1 with the end portion of the shaft member 12 inserted into the hole 74. The protrusion 34 protrudes outward in the radial direction from the hole 74 of the stopper member 70. An outer edge 76 in the radial direction of the first concave portion 75 in the end face 73 is located on the outer side in the radial direction with respect to the convex portion 34. The distance from the end surface 13 of the shaft member 12 to the convex portion 34 is set to be smaller than the length of the stopper member 70 in the axial direction (the distance between the end surfaces 73).

従って、軸部材１２の端面１３を第１部材１に密着させて軸部材１２が第１部材１に固定されると、第１凹部７５に接触した凸部３４と第１部材１との間にストッパ部材７０が挟まれる。ストッパ部材７０は、第１凹部７５に当たる凸部３４と第１部材１との間で、軸方向の移動が規制される。また、ストッパ部材７０は、第１凹部７５に凸部３４が当たることによって、径方向の移動が規制される。よって、自動車の走行時に移動したストッパ部材７０が、筒部材２０や第１部材１、第２部材２に衝突して発生する異音を抑制できる。   Therefore, when the end surface 13 of the shaft member 12 is brought into close contact with the first member 1 and the shaft member 12 is fixed to the first member 1, the gap between the convex portion 34 that contacts the first concave portion 75 and the first member 1. The stopper member 70 is sandwiched. The stopper member 70 is restricted from moving in the axial direction between the convex portion 34 that contacts the first concave portion 75 and the first member 1. Further, the stopper member 70 is restricted from moving in the radial direction when the convex portion 34 hits the first concave portion 75. Therefore, it is possible to suppress abnormal noise generated when the stopper member 70 that has moved during the traveling of the automobile collides with the tubular member 20, the first member 1, and the second member 2.

ストッパ部材７０は、穴部７４と軸部材１２とのはめあいとは関係なく、第１凹部７５の大きさや第１凹部７５の軸線Ｏに対する角度を設定できる。その結果、ストッパ部材７０の穴部７４と軸部材１２とのはめあいを「すきまばめ」にした場合でも、第１部材１と凸部３４との間にストッパ部材７０を挟んだ状態で第１凹部７５に凸部３４が当たるようにすれば、ストッパ部材７０の径方向の移動を規制できる。よって、防振装置６０は、防振ブッシュ１１へのストッパ部材７０の組付け性を確保しつつ、ストッパ部材７０の軸方向および径方向の移動を規制できる。   The stopper member 70 can set the size of the first recess 75 and the angle of the first recess 75 with respect to the axis O regardless of the fit between the hole 74 and the shaft member 12. As a result, even when the fit between the hole 74 of the stopper member 70 and the shaft member 12 is “clearance fit”, the first member 1 is sandwiched between the first member 1 and the convex portion 34 and the first member 1 is inserted. If the convex part 34 hits the concave part 75, the movement of the stopper member 70 in the radial direction can be restricted. Therefore, the vibration isolator 60 can restrict the movement of the stopper member 70 in the axial direction and the radial direction while ensuring the ease of assembling the stopper member 70 to the vibration isolating bush 11.

ストッパ部材７０は弾性部７２に第１凹部７５が形成されているので、ストッパ部材７０の穴部７４に軸部材１２を挿入し易くできる。また、ストッパ部材７０は両方の端面７３に第１凹部７５が形成されているので、ストッパ部材７０の方向性を無くすことができる。その結果、ストッパ部材７０を軸部材１２のいずれの端部にも取り付けることができるので、ストッパ部材７０の取り付け間違いが生じないようにできる。   Since the stopper member 70 has the first recess 75 formed in the elastic portion 72, the shaft member 12 can be easily inserted into the hole 74 of the stopper member 70. Further, since the stopper member 70 has the first concave portions 75 formed on both end faces 73, the directionality of the stopper member 70 can be eliminated. As a result, since the stopper member 70 can be attached to any end portion of the shaft member 12, it is possible to prevent an erroneous attachment of the stopper member 70.

次に図１０から図１３を参照して第４実施の形態について説明する。第１実施の形態から第３実施の形態では、車両への防振装置１０，６０の組付け前は、ストッパ部材４０，７０が接着剤などによって軸部材１２に固定される場合について説明した。これに対し第４実施の形態では、接着剤などによってストッパ部材１００を軸部材１２に固定する作業を省略できる防振装置８０について説明する。なお、第１実施の形態と同一の部分については、同一の符号を付して以下の説明を省略する。図１０は第４実施の形態における防振装置８０の断面図である。   Next, a fourth embodiment will be described with reference to FIGS. In the first to third embodiments, a case has been described in which the stopper members 40 and 70 are fixed to the shaft member 12 with an adhesive or the like before the vibration isolator 10 or 60 is assembled to the vehicle. On the other hand, in the fourth embodiment, a vibration isolator 80 that can omit the work of fixing the stopper member 100 to the shaft member 12 with an adhesive or the like will be described. In addition, about the part same as 1st Embodiment, the same code | symbol is attached | subjected and the following description is abbreviate | omitted. FIG. 10 is a cross-sectional view of a vibration isolator 80 according to the fourth embodiment.

図１０に示すように防振装置８０は、防振ブッシュ８１とストッパ部材１００とを備えている。防振ブッシュ８１は、軸部材１２と、軸部材１２と離隔して軸部材１２を囲み軸部材１２の径方向の外側に配置される筒部材２０と、軸部材１２と筒部材２０とを結合するゴム状弾性体からなる防振基体９０とを備えている。   As shown in FIG. 10, the vibration isolator 80 includes a vibration isolating bush 81 and a stopper member 100. The anti-vibration bush 81 couples the shaft member 12, the tubular member 20 that is spaced apart from the shaft member 12, surrounds the shaft member 12, and is disposed on the outer side in the radial direction of the shaft member 12, and the shaft member 12 and the tubular member 20. And an anti-vibration substrate 90 made of a rubber-like elastic body.

図１１は防振ブッシュ８１の軸線Ｏを含む断面図である。図１１に示すように防振ブッシュ８１の防振基体９０は、筒部材２０の径方向の内側に位置する第１部９１と、第１部９１の軸方向の外側に位置する第２部９２とを備えている。第１部９１は、筒部材２０の内周面２１と軸部材１２の第１外周面１５とに結合する。第２部９２は、第１部９１と一体成形されると共に軸部材１２の第２外周面１６に結合する。第２部９２は、軸方向の内側の部分の外径よりも軸方向の外側の縁９３の外径が小さい。   FIG. 11 is a cross-sectional view including the axis O of the vibration isolating bush 81. As shown in FIG. 11, the anti-vibration base 90 of the anti-vibration bush 81 includes a first part 91 located on the inner side in the radial direction of the cylindrical member 20 and a second part 92 located on the outer side in the axial direction of the first part 91. And. The first portion 91 is coupled to the inner peripheral surface 21 of the tubular member 20 and the first outer peripheral surface 15 of the shaft member 12. The second portion 92 is integrally formed with the first portion 91 and is coupled to the second outer peripheral surface 16 of the shaft member 12. The second portion 92 has a smaller outer diameter of the outer edge 93 in the axial direction than the outer diameter of the inner portion in the axial direction.

第２部９２は、縁９３よりも軸方向の内側の第２部９２の外周面から径方向の外側へ向かって凸部９４が突出する。凸部９４は第２部９２と一体成形されている。軸線Ｏを含む断面（図１１）において、凸部９４は半円状に形成されている。第２部９２は縁９３の外径が第３外周面１７の外径と同じなので、凸部９４は、第３外周面１７よりも径方向の外側に突出する。凸部９４は軸線Ｏの周りに断続的に***している。   In the second portion 92, a convex portion 94 projects from the outer peripheral surface of the second portion 92 on the inner side in the axial direction from the edge 93 toward the outer side in the radial direction. The convex portion 94 is integrally formed with the second portion 92. In the cross section including the axis O (FIG. 11), the convex portion 94 is formed in a semicircular shape. Since the outer diameter of the edge 93 of the second portion 92 is the same as the outer diameter of the third outer peripheral surface 17, the convex portion 94 protrudes outward in the radial direction from the third outer peripheral surface 17. The convex portion 94 protrudes intermittently around the axis O.

図１２はストッパ部材１００の断面図である。図１２に示すようにストッパ部材１００は、円環状に形成された補強リング１０１と、補強リング１０１の全体を覆うゴム状弾性体からなる弾性部１０２とを備えている。補強リング１０１は、弾性部１０２を構成するゴム状弾性体よりも硬い金属製である。ストッパ部材１００は、軸方向の端面１０３に開口する穴部１０４が形成されている。弾性部１０２は、端面１０３と穴部１０４とを連絡し軸線Ｏに対して傾斜する第１凹部１０５が形成されている。第１凹部１０５は、片側の端面１０３において穴部１０４の全周に亘って設けられている。弾性部１０２は、穴部１０４の一部が径方向の外側へ凹む第２凹部１０７が、端面１０３及び第１凹部１０５から離れた位置に形成されている。   FIG. 12 is a cross-sectional view of the stopper member 100. As shown in FIG. 12, the stopper member 100 includes a reinforcing ring 101 formed in an annular shape and an elastic portion 102 made of a rubber-like elastic body that covers the entire reinforcing ring 101. The reinforcing ring 101 is made of a metal that is harder than the rubber-like elastic body constituting the elastic portion 102. The stopper member 100 is formed with a hole 104 that opens in the axial end surface 103. The elastic portion 102 is formed with a first recess 105 that connects the end face 103 and the hole portion 104 and is inclined with respect to the axis O. The 1st recessed part 105 is provided over the perimeter of the hole part 104 in the end surface 103 of one side. In the elastic portion 102, a second recess 107 in which a part of the hole 104 is recessed outward in the radial direction is formed at a position away from the end surface 103 and the first recess 105.

図１３は図１０のＸＩＩＩで示す部分を拡大して示した防振装置８０の断面図である。図１３に示すように、穴部１０４に軸部材１２の端部が挿入された状態で、ストッパ部材１００は筒部材２０と第１部材１との間に配置される。凸部９４は、ストッパ部材１００の穴部１０４よりも径方向の外側に突出する。端面１０３における第１凹部１０５の径方向の外側の縁１０６は、凸部９４よりも径方向の外側に位置する。軸部材１２の端面１３から凸部９４までの距離は、ストッパ部材１００の軸方向の長さ（端面１０３間の距離）より小さく設定されている。   FIG. 13 is a cross-sectional view of the vibration isolator 80 in which the portion indicated by XIII in FIG. 10 is enlarged. As shown in FIG. 13, the stopper member 100 is disposed between the tubular member 20 and the first member 1 with the end of the shaft member 12 inserted into the hole 104. The convex portion 94 projects outward in the radial direction from the hole portion 104 of the stopper member 100. The outer edge 106 in the radial direction of the first concave portion 105 on the end surface 103 is located on the outer side in the radial direction with respect to the convex portion 94. The distance from the end surface 13 of the shaft member 12 to the convex portion 94 is set to be smaller than the axial length of the stopper member 100 (the distance between the end surfaces 103).

第２凹部１０７は、凸部９４が進入できる大きさに形成されている。弾性部１０２は、軸方向において端面１０３と第２凹部１０７との間に、凸部９４の第２凹部１０７への進入を許容すると共に、第２凹部１０７へ進入した凸部９４と係合して凸部９４の軸方向の移動を規制する係合部１０８が設けられている。第２凹部１０７の軸方向の位置は、第２凹部１０７へ進入した凸部９４と係合部１０８とが係合した状態で、ストッパ部材１００の端面１０３と軸部材１２の端面１３とがほぼ面一になるように設定される。   The 2nd recessed part 107 is formed in the magnitude | size which the convex part 94 can approach. The elastic portion 102 allows the convex portion 94 to enter the second concave portion 107 between the end surface 103 and the second concave portion 107 in the axial direction, and engages with the convex portion 94 that has entered the second concave portion 107. Thus, an engaging portion 108 that restricts the axial movement of the convex portion 94 is provided. The position of the second recess 107 in the axial direction is such that the end surface 103 of the stopper member 100 and the end surface 13 of the shaft member 12 are substantially in a state where the protrusion 94 that has entered the second recess 107 is engaged with the engagement portion 108. Set to be flush.

従って、軸部材１２の端面１３を第１部材１に密着させて軸部材１２が第１部材１に固定されると、第１部材１と凸部９４との間にストッパ部材１００が挟まれる。よって、ストッパ部材１００の軸方向の移動を規制できる。その結果、自動車の走行時に移動したストッパ部材１００が、筒部材２０や第１部材１、第２部材２に衝突して発生する異音を抑制できる。   Accordingly, when the end surface 13 of the shaft member 12 is brought into close contact with the first member 1 and the shaft member 12 is fixed to the first member 1, the stopper member 100 is sandwiched between the first member 1 and the convex portion 94. Therefore, the movement of the stopper member 100 in the axial direction can be restricted. As a result, it is possible to suppress abnormal noise that occurs when the stopper member 100 that has moved during the traveling of the automobile collides with the cylindrical member 20, the first member 1, and the second member 2.

ストッパ部材１００は弾性部１０２に第１凹部１０５が形成されているので、ストッパ部材１００の穴部１０４に軸部材１２を挿入し易くできる。また、ストッパ部材１００は弾性部１０２に第２凹部１０７及び係合部１０８が設けられているので、凸部９４を第２凹部１０７に嵌合できる。その結果、車両への防振装置８０の組付け時に、ストッパ部材１００が軸部材１２から脱落しないようにできる。よって、車両への防振装置８０の組付け前に、接着剤などによってストッパ部材１００を軸部材１２に固定する作業を省略できる。   Since the stopper member 100 has the first recess 105 formed in the elastic portion 102, the shaft member 12 can be easily inserted into the hole 104 of the stopper member 100. Further, since the stopper member 100 is provided with the second concave portion 107 and the engaging portion 108 in the elastic portion 102, the convex portion 94 can be fitted into the second concave portion 107. As a result, the stopper member 100 can be prevented from falling off the shaft member 12 when the vibration isolator 80 is assembled to the vehicle. Therefore, it is possible to omit the work of fixing the stopper member 100 to the shaft member 12 with an adhesive or the like before the vibration isolator 80 is assembled to the vehicle.

弾性部１０２は、端面１０３に第１凹部１０５が形成されているので、第１凹部１０５が無い場合に比べて、係合部１０８の径方向の内側の先端部分の軸方向の厚さを薄くできる。その結果、係合部１０８を軸方向に撓み易くできるので、第２凹部１０７へ凸部９４を進入させ易くできる。   Since the first recess 105 is formed in the end surface 103 of the elastic portion 102, the axial thickness of the distal end portion on the radially inner side of the engagement portion 108 is made thinner than when the first recess 105 is not provided. it can. As a result, the engaging portion 108 can be easily bent in the axial direction, so that the convex portion 94 can be easily entered into the second concave portion 107.

以上、実施の形態に基づき本発明を説明したが、本発明は上記実施の形態に何ら限定されるものではなく、本発明の趣旨を逸脱しない範囲内で種々の改良変形が可能であることは容易に推察できるものである。例えば、軸部材１２、筒部材２０及び防振基体３０，９０の大きさや形状等は適宜設定できる。   The present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed. For example, the size, shape, and the like of the shaft member 12, the cylindrical member 20, and the vibration isolation bases 30, 90 can be set as appropriate.

上記各実施の形態では、軸部材１２、筒部材２０及び補強リング４１，７１，１０１が金属製の場合について説明したが、必ずしもこれに限られるものではない。軸部材１２、筒部材２０及び補強リング４１，７１，１０１のいずれか又は全てを合成樹脂製にすることは当然可能である。また、上記各実施の形態では、一体物の軸部材１２や筒部材２０について説明したが、必ずしもこれに限られるものではない。軸部材１２や筒部材２０をそれぞれ複数の部材に分割し、その複数の部材を突き合わせて軸部材１２や筒部材２０を構成することは当然可能である。   In each of the above embodiments, the case where the shaft member 12, the cylindrical member 20, and the reinforcing rings 41, 71, 101 are made of metal has been described. However, the present invention is not necessarily limited thereto. Of course, any or all of the shaft member 12, the cylindrical member 20, and the reinforcing rings 41, 71, 101 can be made of synthetic resin. In each of the above embodiments, the integral shaft member 12 and the cylindrical member 20 have been described. However, the present invention is not necessarily limited thereto. It is naturally possible to divide the shaft member 12 and the cylindrical member 20 into a plurality of members, respectively, and configure the shaft member 12 and the cylindrical member 20 by abutting the plurality of members.

上記各実施の形態では、防振ブッシュ１１，５１，８１の軸部材１２の端部の両方にストッパ部材４０，７０，１００を配置する場合について説明したが、必ずしもこれに限られるものではない。軸部材１２の２つの端部のうち、軸部材１２に対する筒部材２０の相対変位の大きい方（片側）にストッパ部材４０，７０，１００を配置することは当然可能である。   In each of the above-described embodiments, the case where the stopper members 40, 70, 100 are disposed on both ends of the shaft member 12 of the anti-vibration bushes 11, 51, 81 has been described, but the present invention is not necessarily limited thereto. Of course, the stopper members 40, 70, and 100 can be disposed on the larger end (one side) of the cylindrical member 20 with respect to the shaft member 12 out of the two ends of the shaft member 12.

上記第２実施の形態では、軸線Ｏの周りの４か所に凸部５２が設けられる場合について説明したが、必ずしもこれに限られるものではない。少なくとも１か所に凸部５２があれば、ストッパ部材４０の軸方向の移動を規制できる。   In the second embodiment, the case where the convex portions 52 are provided at four locations around the axis O has been described, but the present invention is not necessarily limited thereto. If the convex part 52 exists in at least one place, the movement of the stopper member 40 in the axial direction can be restricted.

上記第４実施の形態では、ストッパ部材１００の弾性部１０２に第１凹部１０５が形成される場合について説明したが、必ずしもこれに限られるものではない。ストッパ部材１００の端面１０３から第２凹部１０７までの距離が、第４実施の形態に比べて近い場合には、第１凹部１０５が無くても係合部１０８の軸方向の厚さを薄くできる。その場合には、係合部１０８を軸方向に撓み易くできるので、第１凹部１０５を省略できる。   In the fourth embodiment, the case where the first concave portion 105 is formed in the elastic portion 102 of the stopper member 100 has been described. However, the present invention is not necessarily limited thereto. When the distance from the end surface 103 of the stopper member 100 to the second recess 107 is shorter than that in the fourth embodiment, the axial thickness of the engaging portion 108 can be reduced without the first recess 105. . In that case, since the engaging part 108 can be easily bent in the axial direction, the first recess 105 can be omitted.

上記各実施の形態では、自動車のサスペンション機構に防振装置１０，６０，８０を組み込む場合について説明したが、必ずしもこれに限られるものではなく、他の機構に防振装置１０，６０，８０を組み込むことは当然可能である。他の機構としては、例えばエンジンマウントが挙げられる。   In each of the above-described embodiments, the case where the vibration isolator 10, 60, 80 is incorporated in the suspension mechanism of the automobile has been described. However, the present invention is not limited to this, and the vibration isolator 10, 60, 80 is incorporated in another mechanism. It is of course possible to incorporate it. Examples of other mechanisms include an engine mount.

１ 第１部材
２ 第２部材
１０，６０，８０ 防振装置
１２ 軸部材
１３ 端面
１５ 第１外周面
１６ 第２外周面
１７ 第３外周面
２０ 筒部材
２１ 内周面
３０，９０ 防振基体
３１，９１ 第１部
３２，９２ 第２部
３４，５２，９４ 凸部
４０，７０，１００ ストッパ部材
４１，７１，１０１ 補強リング
４２，７２，１０２ 弾性部
４３，７３，１０３ 端面
４４，７４，１０４ 穴部
７５，１０５ 第１凹部
７６，１０６ 縁
１０７ 第２凹部 DESCRIPTION OF SYMBOLS 1 1st member 2 2nd member 10,60,80 Vibration isolator 12 Shaft member 13 End surface 15 1st outer peripheral surface 16 2nd outer peripheral surface 17 3rd outer peripheral surface 20 Cylindrical member 21 Inner peripheral surface 30, 90 Anti-vibration base | substrate 31 91 First part 32, 92 Second part 34, 52, 94 Convex part 40, 70, 100 Stopper member 41, 71, 101 Reinforcement ring 42, 72, 102 Elastic part 43, 73, 103 End face 44, 74, 104 Hole 75, 105 First recess 76, 106 Edge 107 Second recess

Claims (4)

第１部材に端部が固定される軸部材と、
前記軸部材の径方向の外側に配置されると共に前記第１部材とは異なる第２部材に固定される筒部材と、
前記筒部材の内周面と前記軸部材の外周面とを結合するゴム状弾性体からなる防振基体と、
補強リングと前記補強リングの全体を覆うゴム状弾性体からなる弾性部とを備え、前記軸部材の端部が穴部を貫通し前記筒部材と前記第１部材との間に配置されるストッパ部材と、を備え、
前記防振基体は、前記筒部材の径方向の内側に位置する第１部と、前記第１部の軸方向の外側に位置する第２部と、を備え、
前記第２部は、前記ストッパ部材の前記穴部よりも径方向の外側に突出する凸部を備え、
前記軸部材の軸方向の端面から前記凸部までの距離は、前記ストッパ部材の軸方向の長さ以下であることを特徴とする防振装置。 A shaft member whose end is fixed to the first member;
A cylindrical member which is disposed on the outer side in the radial direction of the shaft member and is fixed to a second member different from the first member;
An anti-vibration base made of a rubber-like elastic body that couples the inner peripheral surface of the cylindrical member and the outer peripheral surface of the shaft member;
A stopper provided with a reinforcing ring and an elastic portion made of a rubber-like elastic body that covers the entire reinforcing ring, and an end of the shaft member that passes through the hole and is disposed between the cylindrical member and the first member A member, and
The anti-vibration base includes a first part located on the inner side in the radial direction of the cylindrical member, and a second part located on the outer side in the axial direction of the first part,
The second part includes a convex part protruding outward in the radial direction from the hole part of the stopper member,
The anti-vibration device according to claim 1, wherein a distance from an axial end surface of the shaft member to the convex portion is equal to or shorter than an axial length of the stopper member. 前記軸部材は、軸方向の中央に位置する第１外周面と、前記第１外周面に連絡し前記第２部が結合する第２外周面と、前記第２外周面よりも軸方向の外側に位置し前記第１外周面よりも外径が大きい第３外周面と、を備え、
前記凸部は、前記第３外周面よりも径方向の外側に突出することを特徴とする請求項１記載の防振装置。 The shaft member includes a first outer peripheral surface located in the center in the axial direction, a second outer peripheral surface connected to the first outer peripheral surface and coupled to the second portion, and an outer side in the axial direction than the second outer peripheral surface. A third outer peripheral surface located at a larger outer diameter than the first outer peripheral surface,
The anti-vibration device according to claim 1, wherein the convex portion protrudes radially outward from the third outer peripheral surface. 前記ストッパ部材は、前記ストッパ部材の軸方向の端面と前記穴部とを連絡する第１凹部を備え、
前記端面における前記第１凹部の径方向の外側の縁は、前記凸部よりも径方向の外側に位置することを特徴とする請求項１又は２に記載の防振装置。 The stopper member includes a first recess that communicates an axial end surface of the stopper member and the hole portion,
3. The vibration isolator according to claim 1, wherein an outer edge in a radial direction of the first concave portion on the end surface is positioned on an outer side in the radial direction with respect to the convex portion. 前記ストッパ部材は、前記穴部の一部が径方向の外側へ凹む第２凹部を備え、
前記第２凹部は、前記ストッパ部材の軸方向の端面から離れた位置に形成されると共に前記凸部が嵌合することを特徴とする請求項１から３のいずれかに記載の防振装置。 The stopper member includes a second recess in which a part of the hole is recessed outward in the radial direction,
The vibration isolator according to any one of claims 1 to 3, wherein the second recess is formed at a position away from an end surface in the axial direction of the stopper member, and the protrusion is fitted.
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