JP2011144891A - Vibration control bush and method for manufacturing the same - Google Patents

Vibration control bush and method for manufacturing the same Download PDF

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JP2011144891A
JP2011144891A JP2010006934A JP2010006934A JP2011144891A JP 2011144891 A JP2011144891 A JP 2011144891A JP 2010006934 A JP2010006934 A JP 2010006934A JP 2010006934 A JP2010006934 A JP 2010006934A JP 2011144891 A JP2011144891 A JP 2011144891A
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shaft
outer cylinder
inward
portions
attached
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JP5386380B2 (en
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Norikazu Kurosu
法和 黒須
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Honda Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration control bush and a method for manufacturing the same easily assembled while regulating the excessive axial displacement of an outer cylinder. <P>SOLUTION: Stoppers 25a, 26 are provided integrally or unmovably at both ends of a shaft 21, and at least one of the stoppers 25a, 26 has outward projections 26c, 26c projected radially outward from other circumferential parts. The outer cylinder 22 has inward projections 22d, 22d projected radially inward from other circumferential parts, and the outer diameters of the outward projections 26c, 26c of the shaft 21 are formed larger than the inner diameters of the inward projections 22d, 22d of the outer cylinder 22. In the state of the vibration control bush 11 mounted onto the body side, the outward projections 26c, 26c and the inward projections 22d, 22d are arranged to overlap in the axial direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、防振ブッシュ及び防振ブッシュの製造方法の改良に関するものである。   The present invention relates to an anti-vibration bush and an improvement of a method for manufacturing the anti-vibration bush.

従来の防振ブッシュとして、ロアアームが取付けられる取付筒部の過大変位を規制するストッパが設けられたものが知られている(例えば、特許文献1参照。)。   As a conventional anti-vibration bushing, there is known one provided with a stopper for restricting an excessive displacement of a mounting cylinder portion to which a lower arm is attached (for example, see Patent Document 1).

特許文献1の図1によれば、防振ブッシュ10は、車体側に両端部が取付けられる芯部材12と、この芯部材12の中央部を囲む取付筒部6と、これらの芯部材12及び取付筒部6のそれぞれの間に設けられて芯部材12と取付筒部6とを結合する防振基体14と、芯部材12の一端に一体成形されたストッパフランジ26とで取付筒部6を軸方向に挟み込むように芯部材12の他端に圧入されたストッパリング18とからなる。   According to FIG. 1 of Patent Document 1, an anti-vibration bush 10 includes a core member 12 having both ends attached to the vehicle body side, an attachment cylinder portion 6 surrounding the center portion of the core member 12, and the core member 12 and The mounting cylinder portion 6 is formed by a vibration isolating base 14 provided between the mounting cylinder portions 6 and connecting the core member 12 and the mounting cylinder portion 6, and a stopper flange 26 integrally formed at one end of the core member 12. The stopper ring 18 is press-fitted into the other end of the core member 12 so as to be sandwiched in the axial direction.

特開2003−294084公報JP 2003-294084 A

芯部材12の外径とストッパリング18の内径とに寸法公差の関係で圧入代が小さい場合に、ストッパリング18に取付筒部6から軸方向の過大入力が加わると、ストッパリング18が芯部材12に対して相対移動して過大変位を抑制できなくなる恐れがある。   When the press-fitting allowance is small due to the dimensional tolerance between the outer diameter of the core member 12 and the inner diameter of the stopper ring 18, if an excessive input in the axial direction is applied to the stopper ring 18 from the mounting cylinder portion 6, the stopper ring 18 becomes the core member. Therefore, there is a possibility that excessive displacement cannot be suppressed by relative movement with respect to 12.

そこで、例えば、芯部材12の外径とストッパリング18の内径との圧入代を大きくして、取付筒部6からストッパリング18に過大入力が作用してもストッパリング18が移動しにくい構造にすることは可能であるが、芯部材12へのストッパリング18を圧入する、即ち、防振ブッシュ10を組み立てることが困難になる。   Therefore, for example, the press-fitting allowance between the outer diameter of the core member 12 and the inner diameter of the stopper ring 18 is increased so that the stopper ring 18 is difficult to move even if an excessive input acts on the stopper ring 18 from the mounting cylinder 6. Although it is possible, it becomes difficult to press-fit the stopper ring 18 into the core member 12, that is, to assemble the vibration-proof bushing 10.

本発明の目的は、外筒の軸方向過大変位を規制するとともに組み立てが容易な防振ブッシュ及び防振ブッシュの製造方法を提供することにある。   An object of the present invention is to provide an anti-vibration bush and a method for manufacturing the anti-vibration bush that are easy to assemble while restricting excessive axial displacement of the outer cylinder.

請求項1に係る発明は、両端部に車体側へ取付けられる取付部を有するシャフトと、このシャフトの外周部に取付けられる弾性部材と、この弾性部材の外周部に取付けられる外筒とを有し、シャフトに対する外筒の軸方向変位を規制するためにシャフトの両端部にストッパが設けられた防振ブッシュにおいて、ストッパが、シャフトの両端部に一体にあるいは移動不能に設けられ、これらのストッパのうちの少なくとも一方が、周方向の他の部分よりも半径方向外側に突出する外方突出部を有し、外筒に周方向の他の部分よりも半径方向内側に突出する内方突出部を有し、シャフトの外方突出部の外径が、外筒の内方突出部の内径よりも大きく形成されるとともに外筒の内方突出部を除く部分の内径よりも小さく形成され、シャフトの外方突出部を除く部分の外径が、外筒の内方突出部の内径よりも小さく形成され、防振ブッシュの車体側への取付状態では、外方突出部と内方突出部とは軸方向に重なるように配置されることを特徴とする。   The invention according to claim 1 includes a shaft having attachment portions attached to the vehicle body side at both ends, an elastic member attached to the outer peripheral portion of the shaft, and an outer cylinder attached to the outer peripheral portion of the elastic member. In the anti-vibration bush in which stoppers are provided at both ends of the shaft to restrict the axial displacement of the outer cylinder with respect to the shaft, the stoppers are provided integrally or immovably at both ends of the shaft. At least one of them has an outward protrusion that protrudes radially outward from the other part in the circumferential direction, and an inner protrusion that protrudes radially inward from the other part in the circumferential direction on the outer cylinder. And the outer diameter of the outer projecting portion of the shaft is formed larger than the inner diameter of the inner projecting portion of the outer cylinder and smaller than the inner diameter of the portion excluding the inner projecting portion of the outer cylinder, Outward collision The outer diameter of the part excluding the part is formed smaller than the inner diameter of the inner projecting part of the outer cylinder, and the outer projecting part and the inner projecting part are in the axial direction when the vibration isolating bush is attached to the vehicle body side. It arrange | positions so that it may overlap.

防振ブッシュを組み立てるには、まず、外筒の内方突出部がシャフトの外方突出部に軸方向に重ならないようにして、外筒をシャフトに嵌合し、次に、外筒をシャフトに対して相対回動させて外筒の内方突出部がシャフトの外方突出部と軸方向に重なるようにし、そして、この状態でシャフトと外筒とに弾性部材を取付ける。これで防振ブッシュが完成する。   To assemble the anti-vibration bushing, first fit the outer cylinder to the shaft so that the inner projecting part of the outer cylinder does not overlap the outer projecting part of the shaft in the axial direction, and then fit the outer cylinder to the shaft. The inner projecting portion of the outer cylinder overlaps the outer projecting portion of the shaft in the axial direction, and in this state, the elastic member is attached to the shaft and the outer cylinder. This completes the anti-vibration bush.

完成した防振ブッシュは、シャフトの取付部で車体側に取付けられる。
防振ブッシュが車体側に取付けられた状態で、外筒に軸方向に過大入力が加わっても、外筒の内方突出部がシャフトの外方突出部に当たり、外筒の軸方向の変位が規制される。
The completed anti-vibration bush is attached to the vehicle body at the shaft attachment.
Even if an excessive input is applied to the outer cylinder in the axial direction with the anti-vibration bush attached to the vehicle body side, the inner projecting part of the outer cylinder hits the outer projecting part of the shaft, and the axial displacement of the outer cylinder Be regulated.

請求項2に係る発明は、外筒の内方突出部の半径方向内側で且つシャフトの外周部に環状の溝部が形成され、この溝部の内面にも弾性部材が取付けられることを特徴とする。
弾性部材の溝部に対応する位置の半径方向の厚さが溝部以外の部分の厚さと同様に確保される。
The invention according to claim 2 is characterized in that an annular groove is formed on the radially inner side of the inward projecting portion of the outer cylinder and on the outer peripheral portion of the shaft, and an elastic member is attached to the inner surface of the groove.
The thickness in the radial direction at the position corresponding to the groove portion of the elastic member is ensured similarly to the thickness of the portion other than the groove portion.

請求項3に係る発明は、防振ブッシュが、外筒に取付けられるとともに車輪を支持するアーム部材の車幅方向内端に設けられることを特徴とする。
外筒に取付けられたアーム部材の変位が防振ブッシュによって規制される。
The invention according to claim 3 is characterized in that the anti-vibration bush is provided at the inner end in the vehicle width direction of the arm member attached to the outer cylinder and supporting the wheel.
The displacement of the arm member attached to the outer cylinder is regulated by the vibration isolating bush.

請求項4に係る発明は、両端部に車体側へ取付けられる取付部を有するシャフトと、このシャフトの外周部に取付けられる弾性部材と、この弾性部材の外周部に取付けられる外筒とを有し、シャフトに対する外筒の軸方向変位を規制するためにシャフトの両端部にストッパが設けられた防振ブッシュの製造方法であって、両端部に一体にあるいは移動不能に設けられたストッパを備えるとともに、周方向の他の部分よりも半径方向外側に突出する外方突出部をストッパのうちの少なくとも一方に有するシャフト、及び周方向の他の部分よりも半径方向内側に突出する内方突出部を有する外筒を準備する工程と、外筒の内方突出部とシャフトの外方突出部とが軸方向に重ならない状態で外筒をシャフトに嵌合させる工程と、外筒の内方突出部とシャフトの外方突出部とが軸方向に重なるように外筒とシャフトとを相対回動させる工程と、シャフトと外筒との間をゴムで加硫接着する工程とを含む。   The invention which concerns on Claim 4 has a shaft which has the attachment part attached to the vehicle body side in both ends, the elastic member attached to the outer peripheral part of this shaft, and the outer cylinder attached to the outer peripheral part of this elastic member An anti-vibration bushing manufacturing method in which stoppers are provided at both ends of the shaft in order to regulate axial displacement of the outer cylinder with respect to the shaft, comprising stoppers provided integrally or immovably at both ends. A shaft having an outward protrusion protruding outward in the radial direction from the other part in the circumferential direction on at least one of the stoppers, and an inward protrusion protruding inward in the radial direction from the other part in the circumferential direction A step of preparing the outer cylinder, a step of fitting the outer cylinder to the shaft in a state where the inner protrusion of the outer cylinder and the outer protrusion of the shaft do not overlap in the axial direction, and the inner protrusion of the outer cylinder When And a step of the outward protrusion of Yafuto causes the relative rotation of the outer cylinder and the shaft so as to overlap in the axial direction, and a step of vulcanization bonding of rubber between the shaft and the outer cylinder.

外筒をシャフトに嵌合させる工程では、外筒の内方突出部がシャフトの外方突出部に規制されずに外筒がシャフトに組み付けられる。
外筒の内方突出部とシャフトの外方突出部とが軸方向に重なると、外筒の変位がシャフトの外方突出部によって規制される。
In the process of fitting the outer cylinder to the shaft, the outer cylinder is assembled to the shaft without being restricted by the outer protrusion of the shaft.
When the inner projecting portion of the outer cylinder and the outer projecting portion of the shaft overlap in the axial direction, the displacement of the outer cylinder is restricted by the outer projecting portion of the shaft.

請求項1に係る発明では、ストッパが、シャフトの両端部に一体にあるいは移動不能に設けられ、これらのストッパのうちの少なくとも一方が、周方向の他の部分よりも半径方向外側に突出する外方突出部を有し、外筒に周方向の他の部分よりも半径方向内側に突出する内方突出部を有し、シャフトの外方突出部の外径が、外筒の内方突出部の内径よりも大きく形成されるとともに外筒の内方突出部を除く部分の内径よりも小さく形成され、シャフトの外方突出部を除く部分の外径が、外筒の内方突出部の内径よりも小さく形成され、防振ブッシュの車体側への取付状態では、外方突出部と内方突出部とは軸方向に重なるように配置されるので、外筒に軸方向に過大入力が作用したときに、外筒の内方突出部がストッパの外方突出部に当たり、ストッパで外筒の軸方向変位を規制することができ、外筒の軸方向の過大変位を防止することができる。   In the invention according to claim 1, the stopper is provided integrally or immovably at both ends of the shaft, and at least one of these stoppers is an outer portion protruding radially outward from the other circumferential portion. The outer cylinder has an inner protrusion that protrudes radially inward from the other circumferential part, and the outer diameter of the outer protrusion of the shaft is the inner protrusion of the outer cylinder. The inner diameter of the outer cylinder is smaller than the inner diameter of the outer cylinder and the outer diameter of the outer cylinder is smaller than the inner diameter of the outer cylinder. When the anti-vibration bush is mounted on the vehicle body side, the outward projection and the inward projection are arranged so as to overlap in the axial direction, so that excessive input acts in the axial direction on the outer cylinder. The inner projecting part of the outer cylinder hits the outer projecting part of the stopper. Stopper in able to regulate the axial displacement of the outer tube, it is possible to prevent the excessive displacement in the axial direction of the outer cylinder.

また、外筒をシャフトに組付ける際に、ストッパの外方突出部と外筒の内方突出部とが軸方向に重ならないようにシャフトと外筒とを軸回りに相対回動させることで、シャフトの外方突出部及び周方向の外方突出部を除く部分に対して、外筒の周方向の内方突出部を除く部分及び内方突出部を干渉なくスムーズに移動させて、シャフトに外筒を容易に組み付けることができる。
従って、シャフト両端部のストッパを予めシャフトに一体に設けるあるいは移動不能に取付けたとしても、防振ブッシュを容易に組み立てることができる。
Also, when the outer cylinder is assembled to the shaft, the shaft and the outer cylinder are rotated relative to each other around the axis so that the outer protruding portion of the stopper and the inner protruding portion of the outer cylinder do not overlap in the axial direction. The shaft excluding the outer projecting portion of the shaft and the outer projecting portion in the circumferential direction is smoothly moved without interference with the portion excluding the inner projecting portion in the circumferential direction of the outer cylinder and the shaft. The outer cylinder can be easily assembled to the casing.
Therefore, even if the stoppers at both ends of the shaft are previously provided integrally with the shaft or attached so as not to move, the vibration-proof bushing can be easily assembled.

請求項2に係る発明では、外筒の内方突出部の半径方向内側で且つシャフトの外周部に環状の溝部が形成され、この溝部の内面にも弾性部材が取付けられるので、外筒の内方突出部の半径方向内側において弾性部材の厚さを確保することができるため、外筒がシャフトに対して回動しながら軸方向に変位する際にも防振効果を充分に発揮することができる。   In the invention according to claim 2, since an annular groove is formed in the radially inner side of the inward projecting portion of the outer cylinder and on the outer peripheral portion of the shaft, and an elastic member is also attached to the inner surface of the groove, Since the thickness of the elastic member can be ensured on the radially inner side of the side protrusion, the anti-vibration effect can be sufficiently exhibited even when the outer cylinder is displaced in the axial direction while rotating with respect to the shaft. it can.

請求項3に係る発明では、防振ブッシュが、外筒に取付けられるとともに車輪を支持するアーム部材の車幅方向内端に設けられるので、防振ブッシュでアーム部材の変位を規制することができる。   In the invention according to claim 3, since the vibration isolating bush is provided at the inner end in the vehicle width direction of the arm member that is attached to the outer cylinder and supports the wheel, the displacement of the arm member can be regulated by the vibration isolating bush. .

請求項4に係る発明では、両端部に一体にあるいは移動不能に設けられたストッパを備えるとともに、周方向の他の部分よりも半径方向外側に突出する外方突出部をストッパのうちの少なくとも一方に有するシャフト、及び周方向の他の部分よりも半径方向内側に突出する内方突出部を有する外筒とを準備する工程と、外筒の内方突出部とシャフトの外方突出部とが軸方向に重ならない状態で、外筒をシャフトに嵌合させる工程と、外筒の内方突出部とシャフトの外方突出部とが軸方向に重なるように外筒とシャフトとを相対回動させる工程と、シャフトと外筒との間をゴムで加硫接着する工程とを含むので、上記製造方法により、従来のようなシャフトに対するストッパの移動の防止、外筒のシャフトへの組付性向上、及び外筒の軸方向変位の規制を同時に成立させることができる。   The invention according to claim 4 includes stoppers provided integrally or immovably at both ends, and at least one of the stoppers having an outward projecting portion projecting radially outward from the other circumferential portion. And a step of preparing an outer cylinder having an inward protruding portion that protrudes radially inward from other portions in the circumferential direction, and an inward protruding portion of the outer cylinder and an outward protruding portion of the shaft. Relative rotation of the outer cylinder and the shaft so that the outer cylinder and the inner protrusion of the outer cylinder and the outer protrusion of the shaft overlap in the axial direction, with the outer cylinder fitting on the shaft without overlapping in the axial direction And the step of vulcanizing and bonding between the shaft and the outer cylinder with rubber, so that the manufacturing method described above prevents the stopper from moving relative to the shaft as in the past, and the assembly of the outer cylinder to the shaft. Improvement and axial change of outer cylinder It is possible to establish regulations at the same time.

本発明に係る防振ブッシュ(実施例1)の車両での使用状態を示す斜視図である。It is a perspective view which shows the use condition in the vehicle of the vibration isolating bush (Example 1) which concerns on this invention. 本発明に係る防振ブッシュ(実施例1)の説明図である。It is explanatory drawing of the anti-vibration bush (Example 1) which concerns on this invention. 本発明に係る防振ブッシュ(実施例1)のシャフトの説明図である。It is explanatory drawing of the shaft of the anti-vibration bush (Example 1) which concerns on this invention. 本発明に係る防振ブッシュ(実施例1)の外筒の説明図である。It is explanatory drawing of the outer cylinder of the anti-vibration bush (Example 1) which concerns on this invention. 本発明に係る防振ブッシュ(実施例1)の組立要領を示す作用図である。It is an effect | action figure which shows the assembly point of the vibration isolating bush (Example 1) which concerns on this invention. 本発明に係る防振ブッシュ(実施例2)の断面図である。It is sectional drawing of the anti-vibration bush (Example 2) which concerns on this invention. 本発明に係る防振ブッシュ(実施例3)の断面図である。It is sectional drawing of the anti-vibration bush (Example 3) which concerns on this invention. 本発明に係る防振ブッシュ(実施例4)の説明図である。It is explanatory drawing of the anti-vibration bush (Example 4) which concerns on this invention.

本発明の実施の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。   Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

本発明の実施例1を説明する。
図1に示すように、車体側に前後一対の防振ブッシュ11,11及び防振ブッシュ12,12が取付けられ、防振ブッシュ11,11にサスペンションを構成するアッパアーム13が上下スイング可能に取付けられ、防振ブッシュ12,12にサスペンションを構成するロアアーム14が上下スイング可能に取付けられ、これらのアッパアーム13及びロアアーム14のそれぞれの先端部にナックル16が取付けられ、このナックル16の車軸16aに車輪17が回転可能に取付けられる。
A first embodiment of the present invention will be described.
As shown in FIG. 1, a pair of front and rear anti-vibration bushes 11 and 11 and anti-vibration bushes 12 and 12 are attached to the vehicle body side, and an upper arm 13 constituting a suspension is attached to the anti-vibration bushes 11 and 11 so as to be able to swing up and down. The lower arm 14 constituting the suspension is attached to the vibration isolating bushes 12 and 12 so as to be swingable up and down, and the knuckle 16 is attached to the tip of each of the upper arm 13 and the lower arm 14, and the wheel 17 is attached to the axle 16a of the knuckle 16. Is rotatably mounted.

防振ブッシュ11,12は、アッパアーム13及びロアアーム14を弾性的に支持して車輪17から車体側へ振動が伝わるのを防止するとともに、防振ブッシュ11,12の軸方向でのアッパアーム13及びロアアーム14の前後方向変位を規制する部品であり、防振ブッシュ11と防振ブッシュ12とは、基本構造が同一であり、以下では防振ブッシュ11について説明する。   The vibration isolating bushes 11 and 12 elastically support the upper arm 13 and the lower arm 14 to prevent vibration from being transmitted from the wheels 17 to the vehicle body side, and the upper arm 13 and the lower arm in the axial direction of the vibration isolating bushes 11 and 12. The anti-vibration bush 11 and the anti-vibration bush 12 have the same basic structure, and the anti-vibration bush 11 will be described below.

図2(a)は防振ブッシュ11の縦断面図であり、防振ブッシュ11は、車体側に取付けられるシャフト21と、このシャフト21の半径方向外側を囲むように配置されるとともにアッパアーム13(図1参照)の車幅方向内端が取付けられる外筒22と、これらのシャフト21及び外筒22のそれぞれに加硫接着されたゴム23とからなる。   FIG. 2A is a longitudinal sectional view of the vibration isolating bushing 11. The vibration isolating bushing 11 is disposed so as to surround the outer side in the radial direction of the shaft 21 attached to the vehicle body side and the upper arm 13 ( 1), an outer cylinder 22 to which the inner end in the vehicle width direction is attached, and a rubber 23 vulcanized and bonded to each of the shaft 21 and the outer cylinder 22.

シャフト21は、中央部に設けられた円柱部25Aと、この円柱部25Aの両端部に設けられた第1ストッパ25a及び第2ストッパ26と、車体側に取付けられるように第1ストッパ25a及び第2ストッパ26からそれぞれ軸方向に延ばされた矩形断面の車体側取付部25b,27とからなる一体成形品である。   The shaft 21 includes a cylindrical portion 25A provided at the center portion, first stoppers 25a and second stoppers 26 provided at both ends of the cylindrical portion 25A, and the first stopper 25a and the second stopper 26 so as to be attached to the vehicle body side. 2 is an integrally molded product comprising vehicle body side mounting portions 25b and 27 having a rectangular cross section extending from the stopper 26 in the axial direction.

第1ストッパ25aは円形で板状、第2ストッパ26は楕円、長円、又はこれらの楕円、長円に近い形状(図2(b)参照)で板状の部分である。
車体側取付部25b,27は、車体側に取付ける際にボルトを通すボルト挿通穴25e,27aが開けられている。
The first stopper 25a is circular and plate-shaped, and the second stopper 26 is an ellipse, an ellipse, or a plate-like portion having a shape close to these ellipses and an ellipse (see FIG. 2B).
Bolt insertion holes 25e and 27a through which bolts are passed when the vehicle body side attachment portions 25b and 27 are attached to the vehicle body side are opened.

外筒22は、円筒部22Aと、この円筒部22Aの一端に且つ第1ストッパ25a側の端部に半径方向外側に凸となるように形成された環状凸部22aと、円筒部22Aの他端に且つ第2ストッパ26側の端部に半径方向内側及び半径方向外側に屈曲するように形成された環状屈曲部22bとからなる。   The outer cylinder 22 includes a cylindrical portion 22A, an annular convex portion 22a formed at one end of the cylindrical portion 22A and at the end on the first stopper 25a side so as to protrude radially outward, and the cylindrical portion 22A. An annular bent portion 22b is formed at the end and on the end on the second stopper 26 side so as to be bent radially inward and radially outward.

アッパアーム13(図1参照)に取付けられた外筒22が軸方向に変位したときには、環状凸部22aの変位が第1ストッパ25aで規制され、環状屈曲部22bの変位が第2ストッパ26で規制される。   When the outer cylinder 22 attached to the upper arm 13 (see FIG. 1) is displaced in the axial direction, the displacement of the annular convex portion 22a is restricted by the first stopper 25a, and the displacement of the annular bent portion 22b is restricted by the second stopper 26. Is done.

図2(b)は図2(a)のb矢視図であり、シャフト21の第2ストッパ26は、周方向の他の部分よりも半径方向外側に突出する外方突出部26c,26cを有し、外筒22は、環状屈曲部22bに、周方向の他の部分よりも半径方向内側に突出する内方突出部22d,22dを有する。
外方突出部26c、26cの外方へ最も突出する部分と、内方突出部22d,22dの内方へ最も突出する部分は、共に鉛直方向に延びる直線30上に位置する。
2B is a view as viewed in the direction of the arrow b in FIG. 2A, and the second stopper 26 of the shaft 21 has outward projecting portions 26c and 26c projecting radially outward from other portions in the circumferential direction. The outer cylinder 22 has inward protruding portions 22d and 22d that protrude radially inward from other portions in the circumferential direction at the annular bent portion 22b.
The portion that protrudes most outward of the outward protrusions 26c and 26c and the portion that protrudes most inward of the inward protrusions 22d and 22d are both located on a straight line 30 that extends in the vertical direction.

図3(a)はシャフト21の側面図であり、シャフト21は、鍛造又は鋳造によって、円柱部25A、第1ストッパ25a、第2ストッパ26、車体側取付部25b,27が一体成形されている。   FIG. 3A is a side view of the shaft 21, and the shaft 21 is integrally formed with a cylindrical portion 25A, a first stopper 25a, a second stopper 26, and vehicle body side mounting portions 25b and 27 by forging or casting. .

図3(b)は図3(a)のb矢視図であり、第2ストッパ26は、楕円又は長円又はこれらの形状に近い縦長の部分であり、側部を形成するストッパ側部26e,26eと、これらのストッパ側部26e,26eよりも鉛直方向で半径方向外側に突出する外方突出部26c,26cとを備える。   FIG. 3B is a view taken in the direction of the arrow b in FIG. 3A, and the second stopper 26 is an ellipse, an ellipse, or a vertically long portion close to these shapes, and a stopper side portion 26e that forms a side portion. , 26e, and outward projecting portions 26c, 26c projecting radially outward in the vertical direction from these stopper side portions 26e, 26e.

ここで、ストッパ側部26e,26e間の距離(楕円の短径に相当)をDS1、外方突出部26c,26cの各頂点間の距離(楕円の長径に相当)をDS2とすると、DS1<DS2である。   Here, when the distance between the stopper side portions 26e and 26e (corresponding to the minor axis of the ellipse) is DS1, and the distance between the vertices of the outward projections 26c and 26c (corresponding to the major axis of the ellipse) is DS2, DS1 < DS2.

図4(a)は外筒22の側面図、図4(b)は図4(a)のb矢視図である。
図4(a)に示すように、環状屈曲部22bは、外筒22の全周に形成されている。
図4(b)に示すように、環状屈曲部22bは、楕円又は長円形状に近い横長の穴部22eを有する。
4 (a) is a side view of the outer cylinder 22, and FIG. 4 (b) is a view taken in the direction of arrow b in FIG. 4 (a).
As shown in FIG. 4A, the annular bent portion 22 b is formed on the entire circumference of the outer cylinder 22.
As shown in FIG. 4B, the annular bent portion 22b has a horizontally elongated hole portion 22e that is close to an elliptical or oval shape.

穴部22eは、側部を形成する穴側部22g,22gと、これらの穴側部22g,22gよりも半径方向内側に突出するとともに鉛直方向に配置された内方突出部22d,22dとを備える。   The hole portion 22e includes hole side portions 22g and 22g that form side portions, and inward protruding portions 22d and 22d that protrude radially inward from these hole side portions 22g and 22g and are arranged in the vertical direction. Prepare.

ここで、穴側部22g,22g間の距離(楕円の長径に相当)をDH1、内方突出部22d,22dのそれぞれの最も低い部分の間の距離(楕円の短径に相当)をDH2とすると、DH1>DH2である。   Here, the distance between the hole side portions 22g and 22g (corresponding to the major axis of the ellipse) is DH1, and the distance between the lowest portions of the inward projecting portions 22d and 22d (corresponding to the minor axis of the ellipse) is DH2. Then, DH1> DH2.

また、図3(b)及び図4(b)において、第2ストッパ26の外方突出部26c,26c間の距離DS2は、外筒22の内方突出部22d,22d間の距離DH2より大きい(DS2>DH2)。   3B and 4B, the distance DS2 between the outward projections 26c and 26c of the second stopper 26 is larger than the distance DH2 between the inward projections 22d and 22d of the outer cylinder 22. (DS2> DH2).

更に、第2ストッパ26の外方突出部26c,26cの距離DS2は、外筒22の穴側部22g,22g間の距離DH1より小さく(DS2<DH1)、第2ストッパ26のストッパ側部26e,26e間の距離DS1は、外筒22の内方突出部22d,22d間の距離DH2より小さい(DS1<DH2)。
以上より、第2ストッパ26が外筒22の穴部22eに挿入されるように、シャフト21に外筒22を嵌合させることが可能になる。
Furthermore, the distance DS2 between the outward projections 26c and 26c of the second stopper 26 is smaller than the distance DH1 between the hole side portions 22g and 22g of the outer cylinder 22 (DS2 <DH1), and the stopper side portion 26e of the second stopper 26 is. , 26e is smaller than the distance DH2 between the inner projecting portions 22d, 22d of the outer cylinder 22 (DS1 <DH2).
From the above, it is possible to fit the outer cylinder 22 to the shaft 21 so that the second stopper 26 is inserted into the hole 22e of the outer cylinder 22.

図4(c)は図4(a)のc−c線断面図であり、外筒22の円筒部22Aの内面22fに対して、穴側部22g、22gはわずかに半径方向内側に突出し、内方突出部22d,22dは穴側部22g,22gよりも更に半径方向内側に突出する。   4C is a cross-sectional view taken along the line cc of FIG. 4A, and the hole side portions 22g and 22g slightly protrude inward in the radial direction with respect to the inner surface 22f of the cylindrical portion 22A of the outer cylinder 22. The inward protruding portions 22d and 22d protrude further radially inward than the hole side portions 22g and 22g.

以上に述べた防振ブッシュ11の組立要領を次に説明する。
図5(a)に示すように、シャフト21における第2ストッパ26(ここでは、輪郭を太線で示している。(図5(b),(c)も同じ。))の外方突出部26c、26cを上下に配置し、外筒22における穴部22eの穴側部22g,22gを上下に配置する。
この状態では、DS1<DH2、DS2<DH1であり、第2ストッパ26の外形寸法よりも穴部22eの内形寸法が大きい。
The procedure for assembling the vibration isolating bush 11 described above will be described next.
As shown in FIG. 5A, the outward protrusion 26c of the second stopper 26 in the shaft 21 (here, the outline is shown by a thick line (the same applies to FIGS. 5B and 5C)). , 26c are arranged vertically, and the hole side portions 22g, 22g of the hole 22e in the outer cylinder 22 are arranged vertically.
In this state, DS1 <DH2, DS2 <DH1, and the inner dimension of the hole 22e is larger than the outer dimension of the second stopper 26.

図5(b)に示すように、外筒22の穴部22eにシャフト21の第2ストッパ26を挿入・通過させてシャフト21に外筒22を嵌合させる。このときの穴部22eと第2ストッパ26との水平方向の隙間はCH(片側)、鉛直方向の隙間はCV(片側)である。   As shown in FIG. 5B, the second stopper 26 of the shaft 21 is inserted and passed through the hole 22 e of the outer cylinder 22, and the outer cylinder 22 is fitted to the shaft 21. At this time, the horizontal gap between the hole 22e and the second stopper 26 is CH (one side), and the vertical gap is CV (one side).

この状態から図5(c)に示すように、外筒22を矢印で示すように軸回りに90°回転させて、外筒22の内方突出部22d,22dを上下に配置する。
この結果、内方突出部22d,22dが、第2ストッパ26の外方突出部26c,26cに軸方向に重なる。図中の着色した部分が内方突出部22d,22dと外方突出部26c,26cとの軸方向の重なり部35,35である。
この状態で、シャフト21と外筒22との間をゴムで加硫接着する。これで、防振ブッシュ11の組立が完了する。
From this state, as shown in FIG. 5C, the outer cylinder 22 is rotated by 90 ° around the axis as shown by the arrows, and the inwardly projecting portions 22d and 22d of the outer cylinder 22 are arranged vertically.
As a result, the inward protruding portions 22d and 22d overlap the outward protruding portions 26c and 26c of the second stopper 26 in the axial direction. The colored portions in the figure are the overlapping portions 35 and 35 in the axial direction between the inward protruding portions 22d and 22d and the outward protruding portions 26c and 26c.
In this state, the shaft 21 and the outer cylinder 22 are vulcanized and bonded with rubber. This completes the assembly of the vibration isolating bush 11.

上記したように、シャフト21の外方突出部26c,26cと外筒22の内方突出部22d,22dとが軸方向に重なるから、外筒22がシャフト21に対して軸方向に変位するときにシャフト21の第2ストッパ26が外筒22の軸方向の変位を規制することができ、外筒22の過大変位を防止することができる。   As described above, the outer protrusions 26 c and 26 c of the shaft 21 and the inner protrusions 22 d and 22 d of the outer cylinder 22 overlap in the axial direction, so that the outer cylinder 22 is displaced in the axial direction with respect to the shaft 21. In addition, the second stopper 26 of the shaft 21 can regulate the displacement of the outer cylinder 22 in the axial direction, and an excessive displacement of the outer cylinder 22 can be prevented.

以上の図3〜図5で説明した防振ブッシュ11の製造方法を以下に順に記載する。
1.図3において、両端部に一体にあるいは移動不能に設けられたストッパ25a,26を備えるとともに、周方向の他の部分よりも半径方向外側に突出する外方突出部26c,26cをストッパ25a,26のうちの少なくとも一方のストッパ26に有するシャフト21を準備し、図4において、周方向の他の部分よりも半径方向内側に突出する内方突出部22d,22dを有する外筒22を準備する。
The manufacturing method of the vibration-proof bushing 11 demonstrated in the above FIGS. 3-5 is described in order below.
1. In FIG. 3, stoppers 25a and 26 provided integrally or immovably at both ends are provided, and outwardly protruding portions 26c and 26c that protrude radially outward from other portions in the circumferential direction are provided as stoppers 25a and 26, respectively. A shaft 21 having at least one of the stoppers 26 is prepared, and in FIG. 4, an outer cylinder 22 having inwardly projecting portions 22 d and 22 d projecting radially inward from other portions in the circumferential direction is prepared.

2.図5(a)において、外筒22の内方突出部22d,22dとシャフト21の外方突出部26c,26cとが軸方向に重ならない状態にする。
3.図5(b)において、外筒22をシャフト21に嵌合させる。
2. In FIG. 5A, the inner projecting portions 22d and 22d of the outer cylinder 22 and the outer projecting portions 26c and 26c of the shaft 21 are not overlapped in the axial direction.
3. In FIG. 5B, the outer cylinder 22 is fitted to the shaft 21.

4.図5(c)において、外筒22の内方突出部22d,22dとシャフト21の外方突出部26c,26cとが軸方向に重なるように外筒22とシャフト21とを相対回動させる。 4). In FIG. 5C, the outer cylinder 22 and the shaft 21 are relatively rotated such that the inward protruding portions 22d and 22d of the outer cylinder 22 and the outer protruding portions 26c and 26c of the shaft 21 overlap in the axial direction.

5.シャフト21と外筒22との間をゴム(硬化後はゴム23(図2参照))で加硫接着する。
これで、防振ブッシュ11(図2(a),(b)参照)の製造が完了する。
5. The shaft 21 and the outer cylinder 22 are vulcanized and bonded with rubber (rubber 23 (see FIG. 2) after curing).
This completes the manufacture of the anti-vibration bush 11 (see FIGS. 2A and 2B).

次に本発明の実施例2を説明する。図2に示した実施例1と同一構成については同一符号を付け、詳細説明は省略する。
図6に示すように、防振ブッシュ40は、車体側に取付けられるシャフト41と、このシャフト41の半径方向外側を囲むように配置された外筒22と、これらのシャフト41及び外筒22のそれぞれに加硫接着されたゴム43とからなる。
Next, a second embodiment of the present invention will be described. The same components as those in the first embodiment shown in FIG.
As shown in FIG. 6, the anti-vibration bush 40 includes a shaft 41 attached to the vehicle body side, an outer cylinder 22 arranged so as to surround a radially outer side of the shaft 41, and the shaft 41 and the outer cylinder 22. The rubber 43 is vulcanized and bonded to each.

シャフト41は、中央部に設けられた円柱部45aと、この円柱部45aの両端部に設けられた第1ストッパ25a及び第2ストッパ26と、車体側取付部25b,27とからなる一体成形品である。
円柱部45aは、端部に環状のくびれ部45bが形成されている。
The shaft 41 is an integrally molded product comprising a columnar portion 45a provided at the center portion, first stoppers 25a and second stoppers 26 provided at both ends of the columnar portion 45a, and vehicle body side mounting portions 25b and 27. It is.
The cylindrical portion 45a has an annular constricted portion 45b at the end.

ゴム43は、円筒状の筒部43aと、この筒部43aの端部に筒部43aよりも小径にされた端部筒部43bとからなり、これらの筒部43a、端部筒部43bは共に、くびれ部45bを含む円柱部45aに臨む部分全体、及び第1ストッパ25a、第2ストッパ26に接着されている。   The rubber 43 includes a cylindrical tube portion 43a and an end tube portion 43b having a diameter smaller than that of the tube portion 43a at an end portion of the tube portion 43a. The tube portion 43a and the end tube portion 43b are Both are bonded to the entire portion facing the cylindrical portion 45 a including the constricted portion 45 b, and the first stopper 25 a and the second stopper 26.

このように、シャフト41の円柱部45aにくびれ部45bを設けることで、外筒22の環状屈曲部22bの内側においてもゴム43の厚さを他の部分と同様に厚く確保することができる。   Thus, by providing the constricted portion 45b in the cylindrical portion 45a of the shaft 41, the thickness of the rubber 43 can be ensured as thick as the other portions inside the annular bent portion 22b of the outer cylinder 22.

次に本発明の実施例3を説明する。図2に示した実施例1、図6に示した実施例2と同一構成については同一符号を付け、詳細説明は省略する。
図7に示すように、防振ブッシュ50は、車体側に取付けられるシャフト51と、このシャフト51の半径方向外側を囲むように配置された外筒52と、これらのシャフト51及び外筒52のそれぞれに加硫接着されたゴム53とからなる。
Next, a third embodiment of the present invention will be described. The same components as those in the first embodiment shown in FIG. 2 and the second embodiment shown in FIG. 6 are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 7, the anti-vibration bush 50 includes a shaft 51 attached to the vehicle body side, an outer cylinder 52 disposed so as to surround a radially outer side of the shaft 51, and the shaft 51 and the outer cylinder 52. The rubber 53 is vulcanized and bonded to each.

シャフト51は、中央部に設けられた円柱部55aと、この円柱部55aの両端部に設けられた第1ストッパ25a及び第2ストッパ26と、車体側取付部25b,27とからなる一体成形品である。
円柱部55aは、両端に環状のくびれ部55b,45bが形成されている。
The shaft 51 is an integrally molded product including a columnar portion 55a provided at the center, first stoppers 25a and second stoppers 26 provided at both ends of the columnar portion 55a, and vehicle body side mounting portions 25b and 27. It is.
The cylindrical portion 55a has annular constricted portions 55b and 45b formed at both ends.

外筒52は、円筒部52Aと、この円筒部52Aの両端部に半径方向内側及び半径方向外側に屈曲するように形成された環状屈曲部22b,22bとからなる。
ゴム53は、円筒状の筒部53aと、この筒部53aの両端部に設けられるとともに筒部53aよりも小径にされた端部筒部53b,53bとからなり、これらの筒部53a、端部筒部53b,53bは共に、くびれ部45b,55bを含む円柱部55a及び外筒52に臨む部分全体、及び第1ストッパ25a、第2ストッパ26に接着されている。
The outer cylinder 52 includes a cylindrical portion 52A and annular bent portions 22b and 22b formed so as to be bent radially inward and radially outward at both ends of the cylindrical portion 52A.
The rubber 53 includes a cylindrical tube portion 53a and end tube portions 53b and 53b which are provided at both ends of the tube portion 53a and have a diameter smaller than that of the tube portion 53a. Both the part cylinder parts 53b and 53b are bonded to the cylindrical part 55a including the constricted parts 45b and 55b and the entire part facing the outer cylinder 52, and the first stopper 25a and the second stopper 26.

このように、シャフト51の円柱部55aにくびれ部45b,55bを設けることで、外筒52の環状屈曲部22b,22bの内側においてもゴム53の厚さを他の部分と同様に厚く確保することができる。   Thus, by providing the constricted portions 45b and 55b in the cylindrical portion 55a of the shaft 51, the thickness of the rubber 53 is ensured as thick as the other portions inside the annular bent portions 22b and 22b of the outer cylinder 52. be able to.

次に本発明の実施例4を説明する。図2に示した実施例1と同一構成については同一符号を付け、詳細説明は省略する。
図8(a)に示すように、防振ブッシュ60は、車体側に取付けられるシャフト61と、このシャフト61の半径方向外側を囲むように配置されるとともにアッパアーム13(図1参照)の車幅方向内端が取付けられる外筒22と、これらのシャフト61及び外筒22のそれぞれに加硫接着されたゴム23とからなる。
Next, a fourth embodiment of the present invention will be described. The same components as those in the first embodiment shown in FIG.
As shown in FIG. 8 (a), the vibration isolating bush 60 is disposed so as to surround the shaft 61 attached to the vehicle body side and the outside of the shaft 61 in the radial direction, and the vehicle width of the upper arm 13 (see FIG. 1). The outer cylinder 22 is attached to the inner end in the direction, and the rubber 23 is vulcanized and bonded to each of the shaft 61 and the outer cylinder 22.

シャフト61は、一端部に第1ストッパ65aが設けられたシャフト本体65と、このシャフト本体65の他端部に嵌合された第2ストッパ66と、この第2ストッパ66の抜け止めをするとともに車体側に取付けられるようにシャフト本体65の他端部に取付けられた車体側取付部67とからなる。   The shaft 61 has a shaft main body 65 provided with a first stopper 65 a at one end, a second stopper 66 fitted to the other end of the shaft main body 65, and prevents the second stopper 66 from coming off. A vehicle body side attachment portion 67 attached to the other end portion of the shaft main body 65 so as to be attached to the vehicle body side.

シャフト本体65は、円柱部65Aと、この円柱部65Aの一端部に一体成形された円板状の第1ストッパ65aと、車体側に取付けられるように第1ストッパ65aから軸方向に一体に延ばされた矩形断面の車体側取付部65bと、第2ストッパ66と嵌合する小径部65cと、車体側取付部67がねじ結合されるめねじ65dとからなる。   The shaft main body 65 is integrally extended in the axial direction from the first stopper 65a so as to be attached to the vehicle body side, a cylindrical portion 65A, a disk-shaped first stopper 65a integrally formed at one end of the cylindrical portion 65A. The vehicle body side mounting portion 65b has a wide rectangular cross section, a small diameter portion 65c fitted to the second stopper 66, and a female screw 65d to which the vehicle body side mounting portion 67 is screwed.

車体側取付部65b,67は、車体側に取付ける際にボルトを通すボルト挿通穴65e,67aが開けられている。
第2ストッパ66は、シャフト本体65の小径部65cに嵌合する嵌合穴66aが開けられている。
Bolt insertion holes 65e and 67a through which bolts are passed when the vehicle body side attaching portions 65b and 67 are attached to the vehicle body side are opened.
The second stopper 66 is formed with a fitting hole 66 a that fits into the small diameter portion 65 c of the shaft main body 65.

シャフト本体65の小径部65cと第2ストッパ66の嵌合穴66aとは、例えば、しまりばめ又は中間ばめのはめあいが望ましい。
シャフト本体65と第2ストッパ66とは、図示せぬ回り止め構造(例えば、キー、ピン)にて回り止めされている。
The small diameter portion 65c of the shaft main body 65 and the fitting hole 66a of the second stopper 66 are preferably fits of an interference fit or an intermediate fit, for example.
The shaft main body 65 and the second stopper 66 are prevented from rotating by a rotation preventing structure (for example, a key or a pin) (not shown).

車体側取付部67は、シャフト本体65のめねじ65dにねじ結合するおねじ67bと、このおねじ67bの端部に一体成形された円板状の頭部67cと、この頭部67cから軸方向に一体に延びる矩形断面の取付部本体67dとからなり、取付部本体67dにボルト挿通穴67aが設けられている。   The vehicle body side mounting portion 67 includes a male screw 67b that is screw-coupled to the female screw 65d of the shaft main body 65, a disc-shaped head portion 67c that is integrally formed with an end portion of the male screw 67b, and a shaft that extends from the head portion 67c. The mounting portion main body 67d has a rectangular cross section extending integrally in the direction, and a bolt insertion hole 67a is provided in the mounting portion main body 67d.

アッパアーム13(図1参照)に取付けられた外筒22が軸方向に変位したときには、環状凸部22aの変位が第1ストッパ65aで規制され、環状屈曲部22bの変位が第2ストッパ66で規制される。   When the outer cylinder 22 attached to the upper arm 13 (see FIG. 1) is displaced in the axial direction, the displacement of the annular convex portion 22a is restricted by the first stopper 65a, and the displacement of the annular bent portion 22b is restricted by the second stopper 66. Is done.

図8(b)は図8(a)のb矢視図であり、シャフト61の第2ストッパ66は、周方向の他の部分よりも半径方向外側に突出する外方突出部66c,66cを有し、外筒22は、環状屈曲部22bに、周方向の他の部分よりも半径方向内側に突出する内方突出部22d,22dを有する。
外方突出部66c、66cの外方へ最も突出する部分と、内方突出部22d,22dの内方へ最も突出する部分は、共に鉛直方向に延びる直線30上に位置する。
FIG. 8B is a view taken in the direction of the arrow b in FIG. 8A, and the second stopper 66 of the shaft 61 has outward projecting portions 66c and 66c projecting radially outward from the other circumferential portions. The outer cylinder 22 has inward protruding portions 22d and 22d that protrude radially inward from other portions in the circumferential direction at the annular bent portion 22b.
The most outwardly projecting portions of the outward projecting portions 66c and 66c and the most inward projecting portions of the inward projecting portions 22d and 22d are both located on the straight line 30 extending in the vertical direction.

上記の図2(a),(b)、図5(a)〜(c)に示したのは、両端部に車体側へ取付けられる取付部としての車体側取付部25b,27を有するシャフト21と、このシャフト21の外周部に取付けられる弾性部材としてのゴム23と、このゴム23の外周部に取付けられる外筒22とを有し、シャフト21に対する外筒22の軸方向変位を規制するためにシャフト21の両端部にストッパ25a,26が設けられた防振ブッシュ11である。   2 (a) and 2 (b) and FIGS. 5 (a) to 5 (c) show a shaft 21 having vehicle body side attachment portions 25b and 27 as attachment portions attached to the vehicle body at both ends. And a rubber 23 as an elastic member attached to the outer peripheral portion of the shaft 21 and an outer cylinder 22 attached to the outer peripheral portion of the rubber 23 for restricting axial displacement of the outer cylinder 22 relative to the shaft 21. Further, the anti-vibration bush 11 is provided with stoppers 25 a and 26 at both ends of the shaft 21.

この防振ブッシュ11は、ストッパ25a,26が、シャフト21の両端部に一体にあるいは移動不能に設けられ、これらのストッパ25a,26のうちの少なくとも一方が、周方向の他の部分よりも半径方向外側に突出する外方突出部26c,26cを有し、外筒22に周方向の他の部分よりも半径方向内側に突出する内方突出部22d,22dを有し、シャフト21の外方突出部26c,26cの外径としての距離DS2が、外筒22の内方突出部22d,22dの内径としての距離DH2よりも大きく形成されるとともに外筒22の内方突出部22d,22dを除く部分(即ち、穴側部22g,22g)の内径としての距離DH1よりも小さく形成され、シャフト21の外方突出部26c,26cを除く部分(即ち、ストッパ側部26e,26e)の外径としての距離DS1が、外筒22の内方突出部22d,22dの内径としての距離DH2よりも小さく形成され、防振ブッシュ11の車体側への取付状態では、外方突出部26c,26cと内方突出部22d,22dとは軸方向に重なるように配置されることを特徴とする。   In the vibration-isolating bushing 11, stoppers 25a and 26 are provided integrally or immovably on both ends of the shaft 21, and at least one of the stoppers 25a and 26 has a radius larger than that of other portions in the circumferential direction. The outer cylinder 22 has outward protrusions 26c and 26c that protrude outward in the direction, the outer cylinder 22 has inward protrusions 22d and 22d that protrude inward in the radial direction relative to other portions in the circumferential direction, and the outer side of the shaft 21. The distance DS2 as the outer diameter of the protrusions 26c and 26c is formed larger than the distance DH2 as the inner diameter of the inner protrusions 22d and 22d of the outer cylinder 22, and the inner protrusions 22d and 22d of the outer cylinder 22 are The portion excluding the outward projecting portions 26c and 26c of the shaft 21 (that is, the stopper side portion 26) is formed to be smaller than the distance DH1 as the inner diameter of the excluded portion (that is, the hole side portions 22g and 22g). , 26e), the distance DS1 as the outer diameter is formed smaller than the distance DH2 as the inner diameter of the inwardly projecting portions 22d, 22d of the outer cylinder 22, and when the vibration isolating bush 11 is attached to the vehicle body side, it is outward. The protrusions 26c, 26c and the inward protrusions 22d, 22d are arranged so as to overlap in the axial direction.

上記構成により、外筒22に軸方向に過大入力が作用したときに、外筒22の内方突出部22d,22dがストッパ26の外方突出部26c,26cに当たり、ストッパ26で外筒22の軸方向変位を規制することができ、外筒22の軸方向の過大変位を防止することができる。   With the above configuration, when an excessive input is applied to the outer cylinder 22 in the axial direction, the inner protrusions 22d and 22d of the outer cylinder 22 come into contact with the outer protrusions 26c and 26c of the stopper 26. The axial displacement can be restricted, and the excessive displacement of the outer cylinder 22 in the axial direction can be prevented.

また、外筒22をシャフト21に組付ける際に、ストッパ26の外方突出部26c,26cと外筒22の内方突出部22d,22dとが軸方向に重ならないようにシャフト21と外筒22とを軸回りに相対回動させることで、シャフト21の外方突出部26c,26c及び周方向の外方突出部26c,26c(ストッパ側部26e,26e)を除く部分に対して、外筒22の周方向の内方突出部22d,22dを除く部分(穴側部22g,22g)及び内方突出部22d,22dを干渉なくスムーズに移動・通過させて、シャフト21に外筒22を容易に組み付けることができる。   Further, when the outer cylinder 22 is assembled to the shaft 21, the outer protrusions 26c and 26c of the stopper 26 and the inner protrusions 22d and 22d of the outer cylinder 22 are not overlapped in the axial direction. 22 is relatively rotated about the axis so that the outer protrusions 26c and 26c of the shaft 21 and the outer protrusions 26c and 26c (stopper side portions 26e and 26e) in the circumferential direction are outside the portion. The portion (hole side portions 22g, 22g) excluding the inner projecting portions 22d, 22d in the circumferential direction of the tube 22 and the inner projecting portions 22d, 22d are smoothly moved and passed without interference, and the outer tube 22 is moved to the shaft 21. Can be assembled easily.

従って、シャフト21の両端部のストッパ25a,26を予めシャフト21に一体に設けるあるいは移動不能に取付けたとしても、防振ブッシュ11を容易に組み立てることができる。   Therefore, even if the stoppers 25a and 26 at both ends of the shaft 21 are provided integrally with the shaft 21 in advance or attached immovably, the vibration isolating bush 11 can be easily assembled.

更に、ストッパ25a,26を、シャフト21の両端部に一体に設け、好ましくは、シャフト21の全体を一体成形することで、従来のような分割式防振ブッシュに比べて部品数及び組立工数を減らすことができ、コストを削減することができる。   Furthermore, stoppers 25a and 26 are provided integrally at both ends of the shaft 21, and preferably, the entire shaft 21 is integrally formed, so that the number of parts and the number of assembly steps can be reduced as compared with a conventional split type vibration-proof bushing. This can reduce the cost.

上記の図6、図7に示したように、外筒22,52の内方突出部22d,22dの半径方向内側で且つシャフト41,51の外周部に環状の溝部としてのくびれ部45b,55bが形成され、これらのくびれ部45b,55bの内面にも弾性部材としてのゴム43,53が取付けられるので、外筒22,52の内方突出部26c,26cの半径方向内側においてゴム43,53の厚さを確保することができるため、外筒22,52がシャフト41,51に対して回動しながら軸方向に変位する際にも防振効果を充分に発揮することができる。   As shown in FIGS. 6 and 7, the constricted portions 45b and 55b as annular grooves on the radially inner sides of the inwardly protruding portions 22d and 22d of the outer cylinders 22 and 52 and on the outer peripheral portions of the shafts 41 and 51, respectively. Are formed on the inner surfaces of the constricted portions 45b and 55b, so that the rubber 43 and 53 are disposed radially inward of the inwardly projecting portions 26c and 26c of the outer cylinders 22 and 52. Therefore, even when the outer cylinders 22 and 52 are displaced with respect to the shafts 41 and 51 and are displaced in the axial direction, the anti-vibration effect can be sufficiently exerted.

上記の図1に示したように、防振ブッシュ11,12が、外筒22(図2(a),(b)参照)に取付けられるとともに車輪17を支持するアーム部材としてのアッパアーム13、ロアアーム14の車幅方向内端に設けられるので、防振ブッシュ11,12でアッパアーム13、ロアアーム14の変位を規制することができる。   As shown in FIG. 1 above, the anti-vibration bushes 11 and 12 are attached to the outer cylinder 22 (see FIGS. 2A and 2B), and the upper arm 13 and the lower arm as arm members that support the wheels 17 are supported. 14, the displacement of the upper arm 13 and the lower arm 14 can be regulated by the anti-vibration bushes 11 and 12.

上記の図3(a),(b)、図4(a),(b)、図5(a)〜(c)に示したように、防振ブッシュ11の製造方法は、まず、両端部に一体にあるいは移動不能に設けられたストッパ25a,26を備えるとともに、周方向の他の部分よりも半径方向外側に突出する外方突出部26c,26cをストッパ25a,26のうちの少なくとも一方に有するシャフト21、及び周方向の他の部分よりも半径方向内側に突出する内方突出部22d,22dを有する外筒22とを準備する。   As shown in FIGS. 3 (a), 3 (b), 4 (a), 4 (b), and 5 (a) to 5 (c), the manufacturing method of the vibration isolating bush 11 is as follows. And at least one of the stoppers 25a, 26 is provided with an outwardly projecting portion 26c, 26c that protrudes radially outward from other portions in the circumferential direction. A shaft 21 having the inner cylinder 22 and an outer cylinder 22 having inward projecting portions 22d and 22d projecting inward in the radial direction from other portions in the circumferential direction are prepared.

次に、外筒22の内方突出部22d,22dとシャフト21の外方突出部26c,26cとが軸方向に重ならない状態で、外筒22をシャフト21に嵌合させ、外筒22の内方突出部22d,22dとシャフト21の外方突出部26c,26cとが軸方向に重なるように外筒22とシャフト21とを相対回動させる。
そして、シャフト21と外筒22との間をゴム23で加硫接着する。
Next, the outer cylinder 22 is fitted to the shaft 21 in a state where the inner protrusions 22d and 22d of the outer cylinder 22 and the outer protrusions 26c and 26c of the shaft 21 do not overlap in the axial direction. The outer cylinder 22 and the shaft 21 are relatively rotated so that the inward protruding portions 22d and 22d and the outward protruding portions 26c and 26c of the shaft 21 overlap in the axial direction.
The shaft 21 and the outer cylinder 22 are vulcanized and bonded with rubber 23.

上記製造方法により、シャフト21に対するストッパ25a,26の移動の防止、外筒22のシャフト21への組付性向上、及び外筒22の軸方向変位の規制を同時に成立させることができる。   According to the manufacturing method described above, it is possible to simultaneously prevent the stoppers 25a and 26 from moving with respect to the shaft 21, improve the assembly of the outer cylinder 22 to the shaft 21, and restrict the axial displacement of the outer cylinder 22.

本発明の防振ブッシュ及び防振ブッシュの製造方法は、自動車に好適である。   The anti-vibration bush and the method for manufacturing the anti-vibration bush of the present invention are suitable for automobiles.

11,12,40,50,60…防振ブッシュ、13,14…アーム部材(アッパアーム、ロアアーム)、17…車輪、21,41,51,61…シャフト、22,52…外筒、22d…内方突出部、23,43,53…弾性部材(ゴム)、25a,26,65a,66…ストッパ(第1ストッパ、第2ストッパ)、25b,27…取付部(車体側取付部)、26c…外方突出部、45b,55b…溝部(くびれ部)、DH1…外筒の内方突出部を除く部分の内径(距離)、DH2…外筒の内方突出部の内径(距離)、DS1…シャフトの外方突出部を除く部分の外径(距離)、DS2…シャフトの外方突出部の外径(距離)。   11, 12, 40, 50, 60 ... anti-vibration bushes, 13, 14 ... arm members (upper arm, lower arm), 17 ... wheels, 21, 41, 51, 61 ... shaft, 22, 52 ... outer cylinder, 22d ... inside Side projections 23, 43, 53 ... elastic members (rubber), 25a, 26, 65a, 66 ... stoppers (first stopper, second stopper), 25b, 27 ... mounting parts (vehicle body side mounting parts), 26c ... Outward projecting portion, 45b, 55b ... groove portion (constriction portion), DH1 ... inner diameter (distance) of the portion excluding the inner projecting portion of the outer cylinder, DH2 ... inner diameter (distance) of the inner projecting portion of the outer cylinder, DS1 ... The outer diameter (distance) of the portion excluding the outwardly protruding portion of the shaft, DS2... The outer diameter (distance) of the outwardly protruding portion of the shaft.

Claims (4)

両端部に車体側へ取付けられる取付部を有するシャフトと、このシャフトの外周部に取付けられる弾性部材と、この弾性部材の外周部に取付けられる外筒とを有し、前記シャフトに対する前記外筒の軸方向変位を規制するために前記シャフトの両端部にストッパが設けられた防振ブッシュにおいて、
前記ストッパは、前記シャフトの両端部に一体にあるいは移動不能に設けられ、
これらのストッパのうちの少なくとも一方は、周方向の他の部分よりも半径方向外側に突出する外方突出部を有し、
前記外筒に周方向の他の部分よりも半径方向内側に突出する内方突出部を有し、
前記シャフトの前記外方突出部の外径は、前記外筒の前記内方突出部の内径よりも大きく形成されるとともに前記外筒の前記内方突出部を除く部分の内径よりも小さく形成され、
前記シャフトの前記外方突出部を除く部分の外径は、前記外筒の前記内方突出部の内径よりも小さく形成され、
前記防振ブッシュの車体側への取付状態では、前記外方突出部と前記内方突出部とは軸方向に重なるように配置されることを特徴とする防振ブッシュ。
A shaft having attachment portions attached to the vehicle body side at both ends, an elastic member attached to the outer periphery of the shaft, and an outer cylinder attached to the outer periphery of the elastic member, and the outer cylinder with respect to the shaft In the anti-vibration bush in which stoppers are provided at both ends of the shaft in order to regulate axial displacement,
The stopper is provided integrally or immovably at both ends of the shaft,
At least one of these stoppers has an outward projecting portion that projects radially outward from the other circumferential portion,
The outer cylinder has an inward projecting portion that projects radially inward from other portions in the circumferential direction,
The outer diameter of the outer projecting portion of the shaft is formed larger than the inner diameter of the inner projecting portion of the outer cylinder and smaller than the inner diameter of a portion excluding the inner projecting portion of the outer cylinder. ,
The outer diameter of the portion excluding the outward projecting portion of the shaft is formed smaller than the inner diameter of the inward projecting portion of the outer cylinder,
The anti-vibration bush is characterized in that, when the anti-vibration bush is attached to the vehicle body, the outward projecting portion and the inward projecting portion are arranged to overlap in the axial direction.
前記外筒の前記内方突出部の半径方向内側で且つ前記シャフトの外周部に環状の溝部が形成され、この溝部の内面にも前記弾性部材が取付けられることを特徴とする請求項1記載の防振ブッシュ。   The annular groove is formed in the radially inner side of the inward projecting portion of the outer cylinder and in the outer peripheral portion of the shaft, and the elastic member is attached to the inner surface of the groove. Anti-vibration bush. 前記防振ブッシュは、前記外筒に取付けられるとともに車輪を支持するアーム部材の車幅方向内端に設けられることを特徴とする請求項1又は請求項2記載の防振ブッシュ。   The anti-vibration bush according to claim 1 or 2, wherein the anti-vibration bush is provided at an inner end in a vehicle width direction of an arm member attached to the outer cylinder and supporting a wheel. 両端部に車体側へ取付けられる取付部を有するシャフトと、このシャフトの外周部に取付けられる弾性部材と、この弾性部材の外周部に取付けられる外筒とを有し、前記シャフトに対する前記外筒の軸方向変位を規制するために前記シャフトの両端部にストッパが設けられた防振ブッシュの製造方法であって、
両端部に一体にあるいは移動不能に設けられたストッパを備えるとともに、周方向の他の部分よりも半径方向外側に突出する外方突出部を前記ストッパのうちの少なくとも一方に有する前記シャフト、及び周方向の他の部分よりも半径方向内側に突出する内方突出部を有する前記外筒とを準備する工程と、
前記外筒の内方突出部と前記シャフトの外方突出部とが軸方向に重ならない状態で前記外筒を前記シャフトに嵌合させる工程と、
前記外筒の内方突出部と前記シャフトの外方突出部とが軸方向に重なるように前記外筒と前記シャフトとを相対回動させる工程と、
前記シャフトと前記外筒との間をゴムで加硫接着する工程とを含む防振ブッシュの製造方法。
A shaft having attachment portions attached to the vehicle body side at both ends, an elastic member attached to the outer periphery of the shaft, and an outer cylinder attached to the outer periphery of the elastic member, and the outer cylinder with respect to the shaft A method of manufacturing an anti-vibration bush in which stoppers are provided at both ends of the shaft in order to regulate axial displacement,
The shaft having stoppers provided integrally or immovably at both end portions, and having an outward projecting portion projecting radially outward from other circumferential portions on at least one of the stoppers, and a circumference Preparing the outer cylinder having an inward projecting portion projecting radially inward from other portions in the direction;
Fitting the outer cylinder to the shaft in a state where the inward protruding part of the outer cylinder and the outer protruding part of the shaft do not overlap in the axial direction;
A step of relatively rotating the outer cylinder and the shaft such that the inward protruding portion of the outer cylinder and the outward protruding portion of the shaft overlap in the axial direction;
A method of manufacturing a vibration-proof bushing, including a step of vulcanizing and bonding the shaft and the outer cylinder with rubber.
JP2010006934A 2010-01-15 2010-01-15 Anti-vibration bush and method for manufacturing anti-vibration bush Expired - Fee Related JP5386380B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014141929A1 (en) * 2013-03-12 2014-09-18 東海ゴム工業株式会社 Antivibration device
US9783312B2 (en) 2014-07-10 2017-10-10 Honeywell International Inc. Method and apparatus for reducing high transient mount load in aircraft engine mounting systems
KR20190069896A (en) * 2017-12-12 2019-06-20 현대자동차주식회사 Lower arm and mounting apparatus for lower arm
DE102022115121A1 (en) 2022-06-15 2023-12-21 Bayerische Motoren Werke Aktiengesellschaft Storage arrangement of a first component on a second component of a vehicle, in particular a motor vehicle, and vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0567839U (en) * 1992-02-21 1993-09-10 エヌ・オー・ケー・メグラスティック株式会社 Anti-vibration mount
JPH0835533A (en) * 1994-07-25 1996-02-06 Toyota Motor Corp Bush installation structure
JP2003294084A (en) * 2002-04-03 2003-10-15 Toyo Tire & Rubber Co Ltd Vibration-resistant bush
JP2004092803A (en) * 2002-08-30 2004-03-25 Tokai Rubber Ind Ltd Cylindrical vibration controller
JP2005155822A (en) * 2003-11-27 2005-06-16 Yamashita Rubber Co Ltd Cylindrical bush
JP2008189078A (en) * 2007-02-02 2008-08-21 Fuji Heavy Ind Ltd Suspension device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0567839U (en) * 1992-02-21 1993-09-10 エヌ・オー・ケー・メグラスティック株式会社 Anti-vibration mount
JPH0835533A (en) * 1994-07-25 1996-02-06 Toyota Motor Corp Bush installation structure
JP2003294084A (en) * 2002-04-03 2003-10-15 Toyo Tire & Rubber Co Ltd Vibration-resistant bush
JP2004092803A (en) * 2002-08-30 2004-03-25 Tokai Rubber Ind Ltd Cylindrical vibration controller
JP2005155822A (en) * 2003-11-27 2005-06-16 Yamashita Rubber Co Ltd Cylindrical bush
JP2008189078A (en) * 2007-02-02 2008-08-21 Fuji Heavy Ind Ltd Suspension device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014141929A1 (en) * 2013-03-12 2014-09-18 東海ゴム工業株式会社 Antivibration device
JP2014173692A (en) * 2013-03-12 2014-09-22 Tokai Rubber Ind Ltd Vibration isolator
US9382961B2 (en) 2013-03-12 2016-07-05 Sumitomo Riko Company Limited Vibration damping device
DE112014001241B4 (en) * 2013-03-12 2019-02-14 Sumitomo Riko Company Limited Vibration damping device
US9783312B2 (en) 2014-07-10 2017-10-10 Honeywell International Inc. Method and apparatus for reducing high transient mount load in aircraft engine mounting systems
KR20190069896A (en) * 2017-12-12 2019-06-20 현대자동차주식회사 Lower arm and mounting apparatus for lower arm
KR102394852B1 (en) * 2017-12-12 2022-05-06 현대자동차주식회사 Lower arm and mounting apparatus for lower arm
DE102022115121A1 (en) 2022-06-15 2023-12-21 Bayerische Motoren Werke Aktiengesellschaft Storage arrangement of a first component on a second component of a vehicle, in particular a motor vehicle, and vehicle

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