JPH0754910A - Manufacture of liquid encapsulated bushing - Google Patents
Manufacture of liquid encapsulated bushingInfo
- Publication number
- JPH0754910A JPH0754910A JP20736493A JP20736493A JPH0754910A JP H0754910 A JPH0754910 A JP H0754910A JP 20736493 A JP20736493 A JP 20736493A JP 20736493 A JP20736493 A JP 20736493A JP H0754910 A JPH0754910 A JP H0754910A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- liquid
- rubber sleeve
- outer cylinder
- liquid chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Combined Devices Of Dampers And Springs (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、液体封入ブッシュの製
造方法に関する。FIELD OF THE INVENTION The present invention relates to a method for manufacturing a liquid-filled bush.
【０００２】[0002]
【従来の技術】液体封入ブッシュは、自動車におけるサ
スペンションの車体への支持等に用いられている。その
一般的な構造は、外側と内側とに配置された外筒と内筒
との間にゴムスリーブが介装されているとともに、該ゴ
ムスリーブと外筒との間に液体を収容する複数の液室が
周方向に間隔をおいて形成され、これら液室がオリフィ
スによって結ばれたものになっている。さらに、ゴムス
リーブの外周面には中間筒が固着され、該中間筒と外筒
との間にシールゴムが設けられている液体封入ブッシュ
も一般に知られている。2. Description of the Related Art Liquid-filled bushes are used for supporting suspensions of automobiles on vehicle bodies. The general structure is such that a rubber sleeve is interposed between an outer cylinder and an inner cylinder arranged on the outer side and the inner side, and a plurality of liquid sleeves for accommodating a liquid are housed between the rubber sleeve and the outer cylinder. Liquid chambers are formed at intervals in the circumferential direction, and these liquid chambers are connected by an orifice. Further, a liquid-filled bush in which an intermediate cylinder is fixed to the outer peripheral surface of the rubber sleeve and a seal rubber is provided between the intermediate cylinder and the outer cylinder is generally known.
【０００３】例えば、特開平３−１２５０４７号公報に
は、このような液体封入ブッシュの組立方法が記載され
ている。それは、内筒と中間筒との間にゴムスリーブを
設けてなるマウント本体の外周にシールゴムを介して外
筒を配置した後に、外筒及び中間筒の径を狭める縮径を
行なうというものである。このように外筒だけでなく中
間筒をも縮径させるのは、シールゴムが過度に圧縮され
ることを防止してシール性を向上させるためである。For example, Japanese Patent Application Laid-Open No. 3-125047 discloses a method of assembling such a liquid-filled bush. That is, after arranging an outer cylinder via a seal rubber on the outer periphery of a mount body provided with a rubber sleeve between an inner cylinder and an intermediate cylinder, a diameter reduction is performed to reduce the diameters of the outer cylinder and the intermediate cylinder. . The reason why not only the outer cylinder but also the intermediate cylinder is reduced in diameter is to prevent the seal rubber from being excessively compressed and to improve the sealing property.
【０００４】また、特開昭５９−１６４４２７号公報に
は、上記マウント本体の中間筒を縮径させてゴムスリー
ブに予備圧縮を加えておき、このマウント本体を外筒に
圧入して該外筒の縮径を行なう、という方法が記載され
ている。上記ゴムスリーブの予備圧縮はその耐久性の向
上のために行われている。Further, in Japanese Patent Laid-Open No. 59-164427, the diameter of the intermediate cylinder of the mount body is reduced to preliminarily compress the rubber sleeve, and the mount body is press-fitted into the outer cylinder. A method of reducing the diameter of the is described. The rubber sleeve is pre-compressed to improve its durability.
【０００５】[0005]
【発明が解決しようとする課題】しかし、上述の如く外
筒に縮径加工を施した場合、該縮径によって液室の容積
が小さくなるため、その液圧が上昇して外筒と中間筒と
の間から液体が洩れる、あるいはゴムスリーブが破れる
という問題がある。この問題はゴムスリーブのバネ定数
が例えば５００kgf/mm以上というように高い場合に特に
顕著になる。すなわち、ゴムスリーブのバネ定数が低い
場合には、該ゴムスリーブの膨出変形によって上記液圧
の上昇が抑えられるが、そのバネ定数が高い場合にはか
かる変形が小さいことから上記液圧が上昇したままとな
り、上記液洩れ等を生ずるに至るものである。However, when the outer cylinder is subjected to the diameter-reducing process as described above, the volume of the liquid chamber is reduced by the diameter reduction, so that the liquid pressure is increased and the outer cylinder and the intermediate cylinder are increased. There is a problem that liquid leaks from between the two and the rubber sleeve breaks. This problem becomes particularly noticeable when the spring constant of the rubber sleeve is as high as 500 kgf / mm or more. That is, when the spring constant of the rubber sleeve is low, the rise of the hydraulic pressure is suppressed by the bulging deformation of the rubber sleeve, but when the spring constant is high, the deformation is small and the hydraulic pressure rises. As a result, the liquid leakage and the like described above will occur.
【０００６】[0006]
【課題を解決するための手段】本発明は、このような課
題に対して、上記液室を予め軸方向に縮小させておき、
外筒の縮径工程において上記液室を軸方向に拡張させる
ことによって上記液圧の上昇を抑えようとするものであ
る。In order to solve such a problem, the present invention reduces the liquid chamber in the axial direction in advance,
In the diameter reducing process of the outer cylinder, the liquid chamber is expanded in the axial direction so as to suppress the increase in the liquid pressure.
【０００７】すなわち、上記課題を解決する第１の手段
（請求項１に記載の発明）は、互いに間隔をおいて外側
と内側とに配置された外筒及び内筒と、該内筒の外周面
に設けられたゴムスリーブと、該ゴムスリーブの外周面
に開口し上記外筒との間に液室を形成する凹部と、上記
ゴムスリーブの外周面に設けられた中間筒と、上記液室
を密封するよう上記外筒と中間筒との間に介装されたシ
ールゴムとを備え、上記液室に減衰媒体としての液体が
収容された液体封入ブッシュの製造方法であって、上記
外筒よりも大径に形成された外筒部材内に上記内筒、ゴ
ムスリーブ、中間筒及びシールゴムが配置され、且つ上
記外筒部材とゴムスリーブの凹部とによって形成された
液室部分に液体が収容されてなる中間品を製作する工程
と、上記中間品の外筒部材の外径を予定の外筒の径にな
るように狭める縮径工程とを備えていて、上記中間品製
作工程において、上記中間筒については、互いに軸方向
の一方と他方とに別れ且つ上記ゴムスリーブの変形によ
って軸方向に接離動可能な第１中間筒と第２中間筒とに
よって形成し、上記ゴムスリーブを上記第１及び第２の
両中間筒が互いに接近するよう軸方向に加圧変形させる
ことによって、軸方向に縮小した液室部分を形成すると
ともに、該縮小した液室部分に上記液体を満たし、上記
縮径工程において、上記加圧変形されているゴムスリー
ブを上記液室部分が軸方向に拡張するように復元させる
ことを特徴とする液体封入ブッシュの製造方法である。That is, the first means for solving the above-mentioned problems (the invention according to claim 1) is to provide an outer cylinder and an inner cylinder, which are arranged at an outer side and an inner side with a space therebetween, and an outer circumference of the inner cylinder. Surface, a rubber sleeve, a concave portion that opens on the outer peripheral surface of the rubber sleeve to form a liquid chamber between the outer cylinder, an intermediate cylinder provided on the outer peripheral surface of the rubber sleeve, and the liquid chamber. A method for manufacturing a liquid-filled bush in which a liquid as a damping medium is contained in the liquid chamber, the seal rubber being provided between the outer cylinder and the intermediate cylinder so as to seal the Also, the inner cylinder, the rubber sleeve, the intermediate cylinder and the seal rubber are arranged in an outer cylinder member formed to have a large diameter, and the liquid is contained in the liquid chamber portion formed by the outer cylinder member and the recess of the rubber sleeve. The process of manufacturing the intermediate product And a diameter reducing step of reducing the outer diameter of the tubular member to a predetermined outer tube diameter, and in the intermediate product manufacturing step, the intermediate tube is divided into one axial direction and the other axial direction. The rubber sleeve is formed by a first intermediate cylinder and a second intermediate cylinder that can move axially toward and away from each other by deformation of the rubber sleeve, and the rubber sleeve is axially moved so that both the first and second intermediate cylinders approach each other. By deforming under pressure, a liquid chamber portion that is contracted in the axial direction is formed, and the contracted liquid chamber portion is filled with the liquid. A method for manufacturing a liquid-filled bush characterized in that the chamber portion is restored so as to expand in the axial direction.
【０００８】上記課題を解決する第２の手段は、上記第
１の手段をさらに発展させてなるものであって、上記ゴ
ムスリーブの復元を、上記外筒部材の縮径を行ないなが
ら該外筒部材と上記内筒とを相対的に軸方向に振動させ
ることによって行なう点に特徴がある。A second means for solving the above problem is a further development of the first means, wherein the outer sleeve is restored while the rubber sleeve is restored while the outer sleeve member is reduced in diameter. The feature is that it is performed by relatively vibrating the member and the inner cylinder in the axial direction.
【０００９】[0009]
【作用】上記第１の手段においては、中間品製作工程に
おいて第１及び第２の両中間筒が接近するようゴムスリ
ーブを軸方向に加圧変形させるから、当該圧入によって
得られる液室部分は軸方向に縮小したものになり、その
容積はこのようなゴムスリーブの加圧変形を行なわない
場合よりも小さくなる。そして、縮径工程においては外
筒部材の外径の縮小によって上記液室部分の容積がさら
に縮小していくが、上記加圧変形されているゴムスリー
ブを復元させることによって上記液室部分を軸方向に拡
張させるから、当該縮径による上記液室部分の容積の減
少分の少なくとも一部が液室部分の軸方向への拡張によ
って相殺されることになり、当該液室の液圧の上昇が抑
えられる。In the first means, the rubber sleeve is axially deformed so that the first and second intermediate cylinders approach each other in the intermediate product manufacturing process. Therefore, the liquid chamber portion obtained by the press fitting is The volume is reduced in the axial direction, and its volume is smaller than that in the case where such a rubber sleeve is not deformed under pressure. Then, in the diameter reducing step, the volume of the liquid chamber portion is further reduced by reducing the outer diameter of the outer cylinder member. However, by restoring the rubber sleeve that has been deformed under pressure, the liquid chamber portion is axially moved. Since it is expanded in the direction, at least a part of the reduction in the volume of the liquid chamber portion due to the diameter reduction is offset by the expansion of the liquid chamber portion in the axial direction, and the increase in the hydraulic pressure of the liquid chamber. It can be suppressed.
【００１０】また、上記第２の手段においては、上記外
筒部材の縮径を行ないながら該外筒部材と内筒とを相対
的に軸方向に振動させるから、該振動によってゴムスリ
ーブに軸方向の力が作用し、該ゴムスリーブは当該縮径
によって上昇する液圧を受けながら液室を軸方向に拡張
するよう外筒部材に対してずれ動き、結果的には液圧の
上昇が抑えられることになる。In the second means, since the outer cylinder member and the inner cylinder are vibrated relatively in the axial direction while the outer cylinder member is reduced in diameter, the vibration causes the rubber sleeve to move in the axial direction. Is applied to the rubber sleeve, the rubber sleeve shifts with respect to the outer cylinder member so as to expand the liquid chamber in the axial direction while receiving the liquid pressure increasing due to the diameter reduction, and as a result, the increase in the liquid pressure is suppressed. It will be.
【００１１】[0011]
【発明の効果】従って、上記第１の手段によれば、中間
筒を互いに独立し且つ上記ゴムスリーブの変形によって
軸方向に接離動可能な第１中間筒と第２中間筒とによっ
て形成しておき、該両中間筒が互いに接近するよう上記
ゴムスリーブを軸方向に加圧変形させて軸方向に縮小し
た液室部分を形成するとともに、該縮小した液室部分に
液体を満たすようにし、縮径工程において、当該縮径に
よる上記液室部分の容積の減少分の少なくとも一部が相
殺されるよう、上記加圧変形されているゴムスリーブを
復元させることによって上記液室部分を軸方向に拡張さ
せるようにしたから、液室の液圧の上昇が抑えられ、シ
ール性が良くなる。Therefore, according to the first means, the intermediate cylinder is formed by the first intermediate cylinder and the second intermediate cylinder which are independent of each other and can be moved in and out in the axial direction by the deformation of the rubber sleeve. The rubber sleeve is pressed and deformed in the axial direction so as to bring the two intermediate cylinders closer to each other to form a liquid chamber portion that is contracted in the axial direction, and the contracted liquid chamber portion is filled with liquid. In the diameter reducing step, the liquid chamber portion is axially restored by restoring the pressure-deformed rubber sleeve so that at least a part of the volume reduction of the liquid chamber portion due to the diameter reduction is offset. Since the expansion is performed, the increase in the liquid pressure in the liquid chamber is suppressed and the sealing property is improved.
【００１２】また、上記第２の手段によれば、上記外筒
部材の縮径を行ないながら該外筒部材と内筒とを相対的
に軸方向に振動させるようにしたから、上記ゴムスリー
ブの復元を簡単に行なうことができる。Further, according to the second means, the outer cylinder member and the inner cylinder are vibrated relatively in the axial direction while the outer cylinder member is reduced in diameter. Restoration can be done easily.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】−全体構造− 図１及び図２に示す液体封入ブッシュにおいて、１はサ
スペンション部材等の取付孔に嵌められる外筒、２は軸
部材が嵌挿される内筒、３は外筒１と内筒２との間にお
いて軸方向の一方側に設けられた第１中間筒、４は同じ
く軸方向の他方側に設けられた第２中間筒である。これ
ら筒１〜４は、剛性が高い金属材料（プラスチック材料
でもよい）によって形成されていて、且つ互いに同心状
に設けられている（なお、これらの筒は互いに偏心させ
て配置してもよい）。上記内筒２と中間筒３との間には
ゴムスリーブ５が設けられ、上記外筒１と中間筒３との
間にはシールゴム６が設けられている。また、外筒１の
両端部は内側に折り曲げられて内フランジ１ａ，１ａを
形成している。-Overall Structure-In the liquid-filled bush shown in FIGS. 1 and 2, 1 is an outer cylinder fitted in a mounting hole of a suspension member or the like, 2 is an inner cylinder into which a shaft member is fitted, and 3 is an outer cylinder 1. The first intermediate cylinder 4, which is provided on the one side in the axial direction between the inner cylinder 2 and the second intermediate cylinder, which is also provided on the other side in the axial direction, is provided. These cylinders 1 to 4 are made of a highly rigid metal material (may be a plastic material) and are provided concentrically with each other (these cylinders may be arranged so as to be eccentric to each other). . A rubber sleeve 5 is provided between the inner cylinder 2 and the intermediate cylinder 3, and a seal rubber 6 is provided between the outer cylinder 1 and the intermediate cylinder 3. Further, both ends of the outer cylinder 1 are bent inward to form inner flanges 1a, 1a.
【００１５】上記第１中間筒３は、図３に示すように、
円筒部３ａと、該円筒部３ａより第２中間筒４側へ突出
し且つ互いに直径方向に対峙した突出部３ｂ，３ｂとを
備えてなり、両突出部３ｂ，３ｂの間が相対的に凹んだ
凹部３ｃに形成されている。上記第２中間筒４も第１中
間筒３と基本的には同じ構成であって、上記円筒部３ａ
と同径の円筒部４ａと、上記突出部３ａ，３ａに対向す
るように第１中間筒３側へ突出した突出部４ｂ，４ｂと
を備えてなり、両突出部４ｂ，４ｂの間が相対的に凹ん
だ凹部４ｃに形成されている。The first intermediate cylinder 3 is, as shown in FIG.
It is provided with a cylindrical portion 3a and projecting portions 3b, 3b projecting from the cylindrical portion 3a toward the second intermediate cylinder 4 side and facing each other in the diametrical direction, and the two projecting portions 3b, 3b are relatively recessed. It is formed in the recess 3c. The second intermediate cylinder 4 has basically the same configuration as the first intermediate cylinder 3 and has the cylindrical portion 3a.
And a protrusion 4b, 4b protruding toward the first intermediate cylinder 3 so as to face the protrusions 3a, 3a, and the protrusions 4b, 4b are opposed to each other. Is formed in a concave portion 4c that is concave.
【００１６】上記ゴムスリーブ５は、その内周面が上記
内筒２に、外周面が上記中間筒３，４の内周面にそれぞ
れ加硫接着されていて、該中間筒３，４の各凹部３ｃ，
４ｃにおいて外周面に開口するポケット（凹部）５ａを
備えている。そして、該ゴムスリーブ５のポケット５ａ
が上記外筒１の内周面との間に液体（シリコーンオイル
やグリコール等）を収容する液室７，７を形成してい
る。The rubber sleeve 5 has an inner peripheral surface vulcanized and adhered to the inner cylinder 2 and an outer peripheral surface to the inner peripheral surfaces of the intermediate cylinders 3 and 4, respectively. Recess 3c,
4c is provided with a pocket (recess) 5a opening to the outer peripheral surface. And the pocket 5a of the rubber sleeve 5
Forms liquid chambers 7, 7 for containing a liquid (silicone oil, glycol, etc.) with the inner peripheral surface of the outer cylinder 1.
【００１７】上記シールゴム６は、上記第１及び第２の
各中間筒３，４の外周に設けられているとともに、上記
ゴムスリーブ５に対して上記中間筒３，４の凹部３ｃ，
４ｃを介して互いに連続している。また、シールゴム６
には、上記第１中間筒３の突出部３ｂと上記第２中間筒
４の突出部４ｂとの隙間の部位に内方へ凹んだ窪み６ａ
が形成されている。The seal rubber 6 is provided on the outer periphery of each of the first and second intermediate cylinders 3 and 4, and the recesses 3c of the intermediate cylinders 3 and 4 with respect to the rubber sleeve 5 are provided.
4c are continuous with each other. Also, the seal rubber 6
In addition, a recess 6a recessed inward is formed in a gap between the protrusion 3b of the first intermediate cylinder 3 and the protrusion 4b of the second intermediate cylinder 4.
Are formed.
【００１８】上記内筒２の外周面には、上記液室７，７
に突出し外筒１と内筒との間に所定値以上の筒軸に直交
する方向の相対荷重が作用した際に外筒１の内周面に当
たるストッパ８が固定されている。このストッパ８は、
上記外側及び内側の両ゴムスリーブ４，５の過度の変形
による損傷を防止するためのものである。本例の場合、
上記ゴムスリーブ５が上記ストッパ８をくるんでいて、
ストッパ８と外筒１とが直接衝突することがないように
構成されている。The liquid chambers 7, 7 are provided on the outer peripheral surface of the inner cylinder 2.
A stopper 8 is fixed between the outer cylinder 1 and the inner cylinder, which comes into contact with the inner peripheral surface of the outer cylinder 1 when a relative load of a predetermined value or more in a direction orthogonal to the cylinder axis is applied. This stopper 8
The purpose is to prevent damage due to excessive deformation of both the outer and inner rubber sleeves 4, 5. In this example,
The rubber sleeve 5 surrounds the stopper 8,
The stopper 8 and the outer cylinder 1 are configured so as not to directly collide with each other.
【００１９】また、上記液室７，７は、図４に示すよう
に、上記ストッパ８の内周面に形成され上記内筒２を周
回するオリフィス通路９と、該オリフィス通路９より直
径方向に延設されて当該液室７，７に開口した連絡通路
１０，１０とによって連絡されている。当該液体封入ブ
ッシュの場合は、外筒１と内筒２との間に筒軸と直角方
向に相対変位があったときに、両液室７，７間で上記オ
リフィス通路９を介して液体の移動を生じそれによって
減衰作用を呈することになる。As shown in FIG. 4, the liquid chambers 7 and 7 are formed in the inner peripheral surface of the stopper 8 and circulate around the inner cylinder 2, and an orifice passage 9 is formed in the diameter direction from the orifice passage 9. The liquid chambers 7, 7 are extended to communicate with the communication passages 10, 10. In the case of the liquid-filled bush, when liquid is relatively displaced between the outer cylinder 1 and the inner cylinder 2 in the direction perpendicular to the cylinder axis, the liquid is blocked between the liquid chambers 7 and 7 via the orifice passage 9. It will cause movement and thereby exhibit a damping effect.
【００２０】−液体封入ブッシュの製造方法− 次に上記液体封入ブッシュの製造方法を説明する。-Manufacturing Method of Liquid Encapsulating Bush- Next, a manufacturing method of the liquid encapsulating bush will be described.
【００２１】 中間品の製作 図３に示す中間筒３，４とストッパ８が固定された内筒
２との間、並びに中間筒３，４の外周面の各々にゴム材
料を設けて加硫させることにより、図４，図５に示すよ
うに内筒２と中間筒３，４との間にゴムスリーブ５が設
けられ中間筒３，４の外周面にシールゴム６が設けられ
たインナ部材１１を得る。Manufacture of Intermediate Product A rubber material is provided between the intermediate cylinders 3 and 4 and the inner cylinder 2 to which the stopper 8 is fixed as shown in FIG. As a result, as shown in FIGS. 4 and 5, the inner sleeve 11 is provided with the rubber sleeve 5 between the inner cylinder 2 and the intermediate cylinders 3 and 4, and the seal rubber 6 is provided on the outer peripheral surface of the intermediate cylinders 3 and 4. obtain.
【００２２】上記インナ部材１１を、図６に示すように
上記ゴムスリーブ５が変形して中間筒３，４が互いに接
近するよう軸方向の両端から加圧部材１２，１２によっ
て加圧した状態として、両端が折り曲げられていない大
径円筒状の外筒部材１３に圧入する。これにより、図７
に示すように、外筒部材１３とゴムスリーブ５の変形し
たポケット５ａとよりなる軸方向に縮小した液室部分７
Ａが形成される。この場合、ポケット５ａ及び窪み６ａ
が圧縮されることによってゴムスリーブ５が比較的円滑
に加圧変形することになる。そして、外筒部材１３とシ
ールゴム６との間から注射針を差し込んで、液室部分７
Ａのエアを抜きながら該縮小した液室部分７Ａの容積に
相当する量の液体を該液室部分７Ａに注入する。しかる
後に上記外筒部材１３の両端を折り曲げて中間品１４を
得る。As shown in FIG. 6, the inner member 11 is pressed by the pressing members 12 and 12 from both axial ends so that the rubber sleeve 5 is deformed and the intermediate cylinders 3 and 4 approach each other. , Are press-fitted into a large-diameter cylindrical outer cylinder member 13 whose both ends are not bent. As a result, FIG.
As shown in FIG. 6, the axially reduced liquid chamber portion 7 composed of the outer cylinder member 13 and the deformed pocket 5a of the rubber sleeve 5.
A is formed. In this case, the pocket 5a and the depression 6a
As a result of being compressed, the rubber sleeve 5 is deformed under pressure relatively smoothly. Then, the injection needle is inserted from between the outer cylinder member 13 and the seal rubber 6, and the liquid chamber portion 7
While bleeding the air of A, the amount of liquid corresponding to the volume of the reduced liquid chamber portion 7A is injected into the liquid chamber portion 7A. Thereafter, both ends of the outer tubular member 13 are bent to obtain an intermediate product 14.
【００２３】なお、上記インナ部材１１の外筒部材１３
への圧入を液中で行なうことにより圧入と同時に液体の
封入を行なうようにしてもよい。The outer cylinder member 13 of the inner member 11 is
The liquid may be sealed simultaneously with the press-fitting by performing the press-fitting into the liquid.
【００２４】 外筒の縮径加工 縮径加工は、図７に示すように、上下方向の振動を与え
るための加振台１７に載置された縮径用治具１５によっ
て行なう。Diameter Reduction Processing of Outer Cylinder As shown in FIG. 7, diameter reduction processing is performed by a diameter reduction jig 15 mounted on a vibrating table 17 for applying vertical vibration.
【００２５】すなわち、上記縮径用治具１５は、下方へ
いくに従って内径が漸次小さくなるよう内周面にテーパ
１５ａが付された縮径加工部１５ｂを上部に備え、内径
が上記縮径加工部１５ｂよりも大きく形成された大径部
１５ｃを下部に備えてなる円筒状のものである。そし
て、上記加振台１７によって縮径治具１５に上下方向の
振動を与えながら、上記中間品１４を縮径用治具１５の
縮径加工部１５ｂに加圧治具１６によって上から圧入し
ていく。That is, the diameter-reducing jig 15 is provided with a diameter-reducing portion 15b having a taper 15a on its inner peripheral surface so that the inner diameter gradually decreases as it goes downward, and the inner diameter is reduced. It has a cylindrical shape with a large-diameter portion 15c formed larger than the portion 15b at the bottom. Then, while applying the vertical vibration to the diameter reducing jig 15 by the vibrating table 17, the intermediate product 14 is pressed into the diameter reducing portion 15b of the diameter reducing jig 15 from above by the pressure jig 16. To go.
【００２６】これにより、外筒部材１３は軸方向の一端
から他端へと次第に径が狭まっていく。この縮径によっ
て上記液室部分７Ａの容積が小さくなっていくが、加振
台１７によって上下方向、すなわち軸方向の振動が中間
品１４に与えられているため、ゴムスリーブ５及びシー
ルゴム６には、外筒１に対して相対的に軸方向に移動し
ようとする力が働くとともに、上記液室部分７Ａの容積
の減少によって上昇する液圧とが働いて、シールゴム６
が液室部分７Ａを軸方向に拡張するようずれ動くことに
なる。そして、この液室部分７Ａの軸方向への拡張によ
って上記縮径に伴う容積の減少が補われ、液圧の過度上
昇が防止される。よって、得られる液体封入ブッシュで
は液体の洩れやゴムスリーブ５の破損は生じない。As a result, the diameter of the outer cylinder member 13 gradually decreases from one end to the other end in the axial direction. Although the volume of the liquid chamber portion 7A becomes smaller due to this diameter reduction, since the intermediate product 14 is vibrated in the up-down direction, that is, the axial direction by the vibrating table 17, the rubber sleeve 5 and the seal rubber 6 have , A force to move relative to the outer cylinder 1 in the axial direction acts, and a hydraulic pressure that rises due to the decrease in the volume of the liquid chamber portion 7A acts to cause the seal rubber 6
Shifts so as to expand the liquid chamber portion 7A in the axial direction. The expansion of the liquid chamber portion 7A in the axial direction compensates for the decrease in volume accompanying the diameter reduction, and prevents an excessive increase in hydraulic pressure. Therefore, the obtained liquid-filled bush does not leak liquid or damage the rubber sleeve 5.
【００２７】なお、上記ゴムスリーブの復元には、該ゴ
ムスリーブに突起を設けておいて該突起を軸方向に引っ
張るという手法を採用することができる。To restore the rubber sleeve, it is possible to employ a method in which a protrusion is provided on the rubber sleeve and the protrusion is pulled in the axial direction.
【００２８】また、ゴムスリーブの復元は外筒部材の縮
径後、直ちに行なうようにしてもよい。The rubber sleeve may be restored immediately after the outer cylinder member is reduced in diameter.
【００２９】また、上記実施例ではシールゴムを中間筒
側に固着しておいてブッシュを製作するようにしたが、
外筒の内周面側に固着しておくようにしてもよい。Further, in the above embodiment, the bush is manufactured with the seal rubber fixed to the intermediate cylinder side.
It may be fixed to the inner peripheral surface side of the outer cylinder.
【図１】液体封入ブッシュの平面図FIG. 1 is a plan view of a liquid-filled bush.
【図２】図１のＡ−Ａ線における断面図FIG. 2 is a sectional view taken along line AA of FIG.
【図３】中間筒の斜視図FIG. 3 is a perspective view of an intermediate cylinder.
【図４】インナ部材の横断面図FIG. 4 is a cross sectional view of an inner member.
【図５】図４のＢ−Ｂ線における断面図5 is a cross-sectional view taken along the line BB of FIG.
【図６】圧入工程を示す縱断面図FIG. 6 is a vertical sectional view showing a press-fitting process.
【図７】縮径工程を示す縦断面図FIG. 7 is a vertical sectional view showing a diameter reduction process.
１ 外筒 ２ 内筒 ３ 第１中間筒 ４ 第２中間筒 ５ ゴムスリーブ ５ａ ポケット（凹部） ６ シールゴム ７ 液室 ７Ａ 液室部分 ８ ストッパ ９ オリフィス通路 １１ インナ部材 １２ 加圧部材 １３ 外筒部材 １４ 中間品 １５ 縮径用治具 １６ 加圧治具 １７ 加振台 1 Outer Cylinder 2 Inner Cylinder 3 First Intermediate Cylinder 4 Second Intermediate Cylinder 5 Rubber Sleeve 5a Pocket (Concave) 6 Seal Rubber 7 Liquid Chamber 7A Liquid Chamber Part 8 Stopper 9 Orifice Passage 11 Inner Member 12 Pressurizing Member 13 Outer Cylinder Member 14 Intermediate product 15 Diameter reduction jig 16 Pressure jig 17 Shaking table
Claims (2)
された外筒及び内筒と、該内筒の外周面に設けられたゴ
ムスリーブと、該ゴムスリーブの外周面に開口し上記外
筒との間に液室を形成する凹部と、上記ゴムスリーブの
外周面に設けられた中間筒と、上記液室を密封するよう
上記外筒と中間筒との間に介装されたシールゴムとを備
え、上記液室に減衰媒体としての液体が収容された液体
封入ブッシュの製造方法であって、 上記外筒よりも大径に形成された外筒部材内に上記内
筒、ゴムスリーブ、中間筒及びシールゴムが配置され、
且つ上記外筒部材とゴムスリーブの凹部とによって形成
された液室部分に液体が収容されてなる中間品を製作す
る工程と、 上記中間品の外筒部材の外径を予定の外筒の径になるよ
うに狭める縮径工程とを備えていて、 上記中間品製作工程において、上記中間筒については、
互いに軸方向の一方と他方とに別れ且つ上記ゴムスリー
ブの変形によって軸方向に接離動可能な第１中間筒と第
２中間筒とによって形成し、上記ゴムスリーブを上記第
１及び第２の両中間筒が互いに接近するよう軸方向に加
圧変形させることによって、軸方向に縮小した液室部分
を形成するとともに、該縮小した液室部分に上記液体を
満たし、 上記縮径工程において、上記加圧変形されているゴムス
リーブを上記液室部分が軸方向に拡張するように復元さ
せることを特徴とする液体封入ブッシュの製造方法。1. An outer cylinder and an inner cylinder, which are spaced apart from each other and are arranged on the outer and inner sides, a rubber sleeve provided on an outer peripheral surface of the inner cylinder, and an outer peripheral surface of the rubber sleeve which is opened to the outer surface. A recess that forms a liquid chamber between the cylinder and the cylinder, an intermediate cylinder provided on the outer peripheral surface of the rubber sleeve, and a seal rubber interposed between the outer cylinder and the intermediate cylinder so as to seal the liquid chamber. A method for manufacturing a liquid-filled bush in which a liquid as a damping medium is contained in the liquid chamber, wherein the inner cylinder, the rubber sleeve, and the intermediate member are provided in an outer cylinder member formed to have a diameter larger than that of the outer cylinder. A cylinder and seal rubber are arranged,
And a step of manufacturing an intermediate product in which liquid is contained in a liquid chamber portion formed by the outer cylinder member and the recess of the rubber sleeve, and the outer diameter of the outer cylinder member of the intermediate product is the diameter of the planned outer cylinder. In the intermediate product manufacturing process, the intermediate cylinder is
It is formed by a first intermediate cylinder and a second intermediate cylinder which are separated from each other in the axial direction and are movable in the axial direction by the deformation of the rubber sleeve, and the rubber sleeve is formed by the first and second intermediate cylinders. By axially deforming the two intermediate cylinders so that they approach each other, a liquid chamber portion that is reduced in the axial direction is formed, and the reduced liquid chamber portion is filled with the liquid. A method for manufacturing a liquid-filled bush, wherein the rubber sleeve that has been deformed under pressure is restored so that the liquid chamber portion expands in the axial direction.
造方法において、 上記ゴムスリーブの復元を、上記外筒部材の縮径を行な
いながら該外筒部材と上記内筒とを相対的に軸方向に振
動させることによって行なうもの。2. The method for manufacturing a liquid-filled bush according to claim 1, wherein the rubber sleeve is restored so that the outer cylinder member and the inner cylinder are relatively axially moved while reducing the diameter of the outer cylinder member. It is done by vibrating in the direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20736493A JPH0754910A (en) | 1993-08-23 | 1993-08-23 | Manufacture of liquid encapsulated bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20736493A JPH0754910A (en) | 1993-08-23 | 1993-08-23 | Manufacture of liquid encapsulated bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0754910A true JPH0754910A (en) | 1995-02-28 |
Family
ID=16538515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20736493A Withdrawn JPH0754910A (en) | 1993-08-23 | 1993-08-23 | Manufacture of liquid encapsulated bushing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0754910A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002016800A1 (en) * | 2000-08-25 | 2002-02-28 | Toyo Tire & Rubber Co., Ltd. | Liquid seal vibration control device |
| WO2021039890A1 (en) * | 2019-08-27 | 2021-03-04 | 株式会社ブリヂストン | Liquid sealing bush |
-
1993
- 1993-08-23 JP JP20736493A patent/JPH0754910A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002016800A1 (en) * | 2000-08-25 | 2002-02-28 | Toyo Tire & Rubber Co., Ltd. | Liquid seal vibration control device |
| WO2021039890A1 (en) * | 2019-08-27 | 2021-03-04 | 株式会社ブリヂストン | Liquid sealing bush |
| CN114270072A (en) * | 2019-08-27 | 2022-04-01 | 株式会社普利司通 | Liquid seal bush |
| CN114270072B (en) * | 2019-08-27 | 2023-04-14 | 株式会社普洛斯派 | Liquid seal bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001031 |