JP2007253739A - Stabilizer bush - Google Patents

Stabilizer bush Download PDF

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JP2007253739A
JP2007253739A JP2006079242A JP2006079242A JP2007253739A JP 2007253739 A JP2007253739 A JP 2007253739A JP 2006079242 A JP2006079242 A JP 2006079242A JP 2006079242 A JP2006079242 A JP 2006079242A JP 2007253739 A JP2007253739 A JP 2007253739A
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main body
peripheral surface
body portion
inner peripheral
axial direction
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Masami Endo
正巳 遠藤
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Sumitomo Riko Co Ltd
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Sumitomo Riko Co Ltd
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  • Vibration Prevention Devices (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a stabilizer bush capable of improving seal performance by preventing an inner peripheral surface from having an under-cut shape, without dividing a seal lip portion. <P>SOLUTION: The stabilizer bush 10 has a first cylinder portion 50, and a second cylinder portion 60 molded separately from the first cylinder portion 50. The first cylinder portion 50 has a first main body portion 51 having an inner peripheral made from a cylinder with the same diameter, and a first seal lip 53 projecting out from the inner peripheral surface of the first main body portion 51 to an inner side in a direction orthogonal to an axis on the whole inner peripheral surface at an end portion on an axial direction left side of the first main body portion 51. A second cylinder portion 60 has a second main body portion 61 having an inner peripheral surface made from a cylinder with the same diameter and disposed so as that the end surface on the axially left side abuts on an end surface on an axial direction right side of the first main body portion 51; and a second seal lip 63 projecting out from the inner peripheral surface of the second main body portion 61 to an inner side in a direction orthogonal to an axis on the whole inner peripheral surface at an end portion on the axially right side of the second main body portion 61. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、筒状のゴム弾性体からなり、筒内部に車両のスタビライザバーを挿通保持し、外周面を締結部材により押圧されて車両ボディに固定されるスタビライザブッシュに関するものである。   The present invention relates to a stabilizer bush which is made of a cylindrical rubber elastic body, which has a stabilizer bar of a vehicle inserted and held inside the cylinder, and whose outer peripheral surface is pressed by a fastening member and fixed to the vehicle body.

この種のスタビライザブッシュは、内周面に砂・泥などの異物が侵入すると、スタビライザブッシュの内周面及びスタビライザバーの外周面の摩耗・損傷を生じる問題がある。その結果、スタビライザバーとの間にがたつきが生じたり、異音が生じたりするおそれがある。   This type of stabilizer bush has a problem in that when foreign matter such as sand and mud enters the inner peripheral surface, the inner peripheral surface of the stabilizer bush and the outer peripheral surface of the stabilizer bar are worn and damaged. As a result, there is a risk of rattling or abnormal noise between the stabilizer bar.

この問題を解決するために、例えば、特許第２９３８５３３号公報（特許文献１）には、スタビライザブッシュの内周面の軸方向両端に、軸直角方向内方に突出部を形成したものが開示されている。この突出部により、スタビライザブッシュの内周面に異物が侵入することを防止するというものである。   In order to solve this problem, for example, Japanese Patent No. 2938533 (Patent Document 1) discloses a structure in which protruding portions are formed inward in the direction perpendicular to the axis at both axial ends of the inner peripheral surface of the stabilizer bush. ing. This protrusion prevents foreign matter from entering the inner peripheral surface of the stabilizer bush.

ここで、突出部の軸直角方向内方への突出量が大きいほど、シール性能が向上する。これは、突出量が大きいほど、突出部によりスタビライザバーの外周面を押圧する力が大きくなるためである。しかし、スタビライザブッシュの内周面の軸方向両端に突出部を形成するため、スタビライザブッシュの内周面は、アンダーカット形状となる。このようなアンダーカット形状の場合には、アンダーカット量が所定量を超えると成形が困難である。つまり、突出部の軸直角方向内方への突出量が制限されることになる。従って、シール性能を向上する手段として、突出部の軸直角方向内方への突出量を大きくするという手段を採用することができない。   Here, the greater the amount of protrusion of the protrusion inward in the direction perpendicular to the axis, the better the sealing performance. This is because the larger the amount of protrusion, the greater the force pressing the outer peripheral surface of the stabilizer bar by the protrusion. However, since the protruding portions are formed at both ends in the axial direction of the inner peripheral surface of the stabilizer bush, the inner peripheral surface of the stabilizer bush has an undercut shape. In the case of such an undercut shape, if the undercut amount exceeds a predetermined amount, molding is difficult. That is, the amount of protrusion of the protrusion inward in the direction perpendicular to the axis is limited. Therefore, as a means for improving the sealing performance, a means for increasing the protruding amount of the protruding portion in the direction perpendicular to the axis cannot be employed.

ところで、特開平４−３４９０１２号公報（特許文献２）には、スタビライザブッシュの軸方向に２分割することが開示されている。これにより、それぞれ分割されたスタビライザブッシュは、アンダーカット形状とならないようにすることができる。
特許第２９３８５３３号公報 特開平４−３４９０１２号公報 Incidentally, Japanese Patent Laid-Open No. 4-349012 (Patent Document 2) discloses that the stabilizer bush is divided into two in the axial direction. Thereby, the stabilizer bush divided | segmented each can be prevented from becoming an undercut shape.
Japanese Patent No. 2938533 JP-A-4-349010

しかし、スタビライザブッシュを軸方向に２分割した場合には、それぞれ分割されたスタビライザブッシュの合わせ部位に隙間が形成されるおそれがある。そして、この合わせ部位は、スタビライザブッシュの内周面の軸方向両端部分に突出部を形成した場合にも同様である。つまり、突出部の合わせ部位に隙間が形成される。   However, when the stabilizer bush is divided into two in the axial direction, there is a possibility that a gap may be formed at the joint portion of the divided stabilizer bushes. And this alignment part is the same also when a protrusion part is formed in the axial direction both ends of the internal peripheral surface of a stabilizer bush. That is, a gap is formed at the joint portion of the protrusion.

そのため、スタビライザブッシュを分割することで、突出部の突出量を大きくしたとしても、突出部の合わせ部位に隙間が形成されることで、結果としてシール性能が低下するおそれがある。つまり、シール性能を向上するためには、突出部は、分割されないことが望ましい。   Therefore, even if the protrusion amount of the protruding portion is increased by dividing the stabilizer bush, a gap is formed at the joint portion of the protruding portion, and as a result, the sealing performance may be deteriorated. That is, in order to improve the sealing performance, it is desirable that the protruding portion is not divided.

本発明は、このような事情に鑑みてなされたものであり、突出部を分割することなく、且つ、内周面をアンダーカット形状とならないようにすることにより、シール性能をより向上することができるスタビライザブッシュを提供することを目的とする。   This invention is made | formed in view of such a situation, and can improve a sealing performance more by not dividing a protrusion part and making an inner peripheral surface into an undercut shape. An object of the present invention is to provide a stabilizer bush that can be used.

本発明のスタビライザブッシュは、筒状のゴム弾性体からなり、筒内部にスタビライザバーを挿通保持し、且つ、外周面を締結部材により押圧されて車両ボディに固定されるスタビライザブッシュであって、第１筒部と、第２筒部とを備える。第１筒部は、内周面が同径の筒状からなる第１本体部と、第１本体部の軸方向第１側の端部の内周面全周に第１本体部の内周面より軸直角方向内方に突出する第１環状突出部とを有する。第２筒部は、内周面が同径の筒状からなり軸方向第１側の端面が第１本体部の軸方向第２側の端面に当接して配置される第２本体部と、第２本体部の軸方向第２側の端部の内周面全周に第２本体部の内周面より軸直角方向内方に突出する第２環状突出部とを有し、第１筒部と別体成形されている。   The stabilizer bush of the present invention is a stabilizer bush made of a cylindrical rubber elastic body, having a stabilizer bar inserted and held inside the cylinder, and having an outer peripheral surface pressed by a fastening member and fixed to the vehicle body. 1 cylinder part and a 2nd cylinder part are provided. The first cylindrical portion includes a first main body portion having a cylindrical shape with an inner peripheral surface, and an inner periphery of the first main body portion on the entire inner peripheral surface of the end portion on the first axial side of the first main body portion. A first annular projecting portion projecting inward in the direction perpendicular to the axis from the surface. The second cylindrical portion has a cylindrical shape whose inner peripheral surface is the same diameter, and a second main body portion arranged so that an end surface on the first axial side is in contact with an end surface on the second axial side of the first main body portion; A second annular projecting portion projecting inward from the inner peripheral surface of the second main body portion in the direction perpendicular to the axial direction on the entire inner peripheral surface of the end portion on the second axial side of the second main body portion; It is molded separately from the part.

つまり、本発明のスタビライザブッシュは、軸直角方向に２分割した形状となる。そして、第１筒部と第２筒部とは、何れもアンダーカット形状とはならない。従って、第１筒部の第１環状突出部は、第１筒部の第１本体部の内周面よりも軸直角方向内方に大きく突出するように成形することができる。また、第２筒部の第２環状突出部は、第２筒部の第２本体部の内周面よりも軸直角方向内方に大きく突出するように成形することができる。これにより、シール性能を向上することができる。ここで、軸直角方向に２分割した形状とすることで、シール性能を発揮する第１環状突出部及び第２環状突出部は、環状をなしており、特許文献２のようなシール性能を発揮する部分に合わせ部が存在しない。従って、第１環状突出部及び第２環状突出部は、スタビライザバーの外周面を全周に亘って押圧することができるので、確実にシール性能を向上することができる。   That is, the stabilizer bush of the present invention has a shape divided into two in the direction perpendicular to the axis. And neither a 1st cylinder part nor a 2nd cylinder part becomes an undercut shape. Accordingly, the first annular projecting portion of the first tube portion can be shaped so as to project larger inward in the direction perpendicular to the axis than the inner peripheral surface of the first main body portion of the first tube portion. Further, the second annular projecting portion of the second cylindrical portion can be shaped so as to project larger inward in the direction perpendicular to the axis than the inner peripheral surface of the second main body portion of the second cylindrical portion. Thereby, sealing performance can be improved. Here, the first annular protrusion and the second annular protrusion that exhibit sealing performance by forming a shape that is divided into two in the direction perpendicular to the axis form an annular shape, and exhibit sealing performance as in Patent Document 2. There is no matching part to the part to be. Therefore, the first annular protrusion and the second annular protrusion can press the outer peripheral surface of the stabilizer bar over the entire circumference, and thus the sealing performance can be improved reliably.

ところで、第１筒部と第２筒部とが当接する部位、すなわち、第１筒部の第１本体部の軸方向第２側の端面と第２筒部の第２本体部の軸方向第１側の端面との間に形成される隙間から、第１本体部及び第２本体部の内周面に異物が侵入するおそれがある。そこで、第１本体部の軸方向第２側の端面と第２本体部の軸方向第１側の端面との当接面のうち外周端は、締結部材により被覆されるようにするとよい。このように、第１本体部の軸方向第２側の端面と第２本体部の軸方向第１側の端面との間の隙間を締結部材により被覆することで、当該隙間から異物が侵入することを防止できる。   By the way, the part which the 1st cylinder part and the 2nd cylinder part contact | abut, ie, the axial direction 2nd end surface of the 1st main-body part of the 1st cylinder part, and the 2nd main-body part of the 2nd cylinder part in the axial direction 1st. There is a possibility that foreign matter may enter the inner peripheral surfaces of the first main body portion and the second main body portion from the gap formed between the end surface on the first side. Therefore, the outer peripheral end of the contact surface between the end surface on the second axial side of the first main body and the end surface on the first axial side of the second main body may be covered with the fastening member. As described above, the gap between the end surface on the second axial direction side of the first main body portion and the end surface on the first axial direction side of the second main body portion is covered with the fastening member, so that foreign matter enters from the gap. Can be prevented.

また、第１本体部は、締結部材に対して軸方向第１側に係合する第１係合部を有し、第２本体部は、締結部材に対して軸方向第２側に係合する第２係合部を有するようにするとよい。これにより、スタビライザブッシュを締結部材により締結した場合に、第１筒部と第２筒部とが離間しないようにすることができる。つまり、第１本体部の軸方向第２側の端面と第２本体部の軸方向第１側の端面との間に隙間が形成されることを抑制できる。従って、シール性能を確実に向上することができる。   The first main body has a first engaging portion that engages with the fastening member on the first axial side, and the second main body engages with the fastening member on the second axial side. It is good to have the 2nd engaging part to do. Thereby, when a stabilizer bush is fastened with a fastening member, it can prevent a 1st cylinder part and a 2nd cylinder part from separating. That is, it is possible to suppress the formation of a gap between the end surface on the second axial side of the first main body and the end surface on the first axial side of the second main body. Therefore, the sealing performance can be reliably improved.

本発明のスタビライザブッシュによれば、突出部を分割することなく、且つ、内周面をアンダーカット形状とならないようにすることにより、シール性能をより向上することができる。   According to the stabilizer bush of the present invention, the sealing performance can be further improved by dividing the projecting portion and preventing the inner peripheral surface from being undercut.

次に、本実施形態のスタビライザブッシュ１０について、図１〜図３を参照して説明する。図１は、スタビライザブッシュ１０を車両へ組み付けた状態の軸方向断面図を示す。図２は、図１のＡ方向矢視図を示す。図３は、スタビライザブッシュ１０単体、すなわち、車両へ組み付ける前の状態の軸方向断面図を示す。   Next, the stabilizer bush 10 of this embodiment is demonstrated with reference to FIGS. 1-3. FIG. 1 shows an axial sectional view of a state in which the stabilizer bush 10 is assembled to a vehicle. 2 shows a view in the direction of arrow A in FIG. FIG. 3 shows an axial cross-sectional view of the stabilizer bush 10 alone, that is, a state before being assembled to the vehicle.

スタビライザブッシュ１０は、全体としては、図１及び図２に示すように、筒状のゴム弾性体からなる。このスタビライザブッシュ１０のゴム弾性体のゴム材料としては、摺動性の良好な自己潤滑ゴム等が好適に用いられる。   As shown in FIGS. 1 and 2, the stabilizer bush 10 is made of a cylindrical rubber elastic body as a whole. As the rubber material of the rubber elastic body of the stabilizer bush 10, self-lubricating rubber having good slidability is preferably used.

そして、スタビライザブッシュ１０は、筒内部にスタビライザバー２０を挿通保持している。ここで、スタビライザバー２０は、鋼材からなり、車両上方から見た場合に略コの字型であって、外径が同径の丸棒からなる。そして、スタビライザバー２０の両端が、それぞれ左右の車輪（図示せず）を支持するサスペンションアーム（図示せず）に連結されている。   And the stabilizer bush 10 has inserted and hold | maintained the stabilizer bar 20 inside a cylinder. Here, the stabilizer bar 20 is made of a steel material, is substantially U-shaped when viewed from above the vehicle, and is made of a round bar having the same outer diameter. Then, both ends of the stabilizer bar 20 are connected to suspension arms (not shown) that respectively support left and right wheels (not shown).

また、スタビライザブッシュ１０の外周面が締結部材３０により押圧されて、車両ボディ４０に固定されている。ここで、締結部材３０は、金属製からなり、スタビライザブッシュ１０の外周面を押圧するＵ字型形状部３１と、Ｕ字型形状部３１の開口両端にボルトにより車両ボディ４０に取付けるためのフランジ部３２とを備えている。ここで、Ｕ字型形状部３１は、軸方向断面において、軸方向中央が外方へ湾曲した形状からなる。つまり、Ｕ字型形状部３１の内側面を見たときに、軸方向中央に凹溝が形成された形状となる。   Further, the outer peripheral surface of the stabilizer bush 10 is pressed by the fastening member 30 and fixed to the vehicle body 40. Here, the fastening member 30 is made of metal and has a U-shaped portion 31 that presses the outer peripheral surface of the stabilizer bush 10 and a flange that is attached to the vehicle body 40 with bolts at both ends of the opening of the U-shaped portion 31. Part 32. Here, the U-shaped portion 31 has a shape in which the axial center is curved outward in the axial section. That is, when the inner surface of the U-shaped portion 31 is viewed, the groove is formed in the center in the axial direction.

このスタビライザブッシュ１０の詳細について、図３を参照して説明する。スタビライザブッシュ１０は、第１筒部５０と、第２筒部６０とからなる。この第１筒部５０と第２筒部６０とは、それぞれ別体に成形されている。なお、第１筒部５０と第２筒部６０とは、図３の左右方向に対称形状からなる。ここでは、第１筒部５０と第２筒部６０は、同一形状からなる。   The detail of this stabilizer bush 10 is demonstrated with reference to FIG. The stabilizer bush 10 includes a first cylinder part 50 and a second cylinder part 60. The first cylinder part 50 and the second cylinder part 60 are formed separately from each other. In addition, the 1st cylinder part 50 and the 2nd cylinder part 60 consist of symmetrical shapes in the left-right direction of FIG. Here, the 1st cylinder part 50 and the 2nd cylinder part 60 consist of the same shape.

第１筒部５０は、第１本体部５１と、第１締結部材係止部５２と、第１シールリップ５３とを有する。第１本体部５１は、筒状のゴム弾性体からなる。この第１本体部５１の内周面は、軸方向全てにおいて同径からなり、内周面の内径は、スタビライザバー２０の外径より僅かに小さくされている。これは、第１本体部５１の筒内部にスタビライザバー２０を挿通可能とすることに加えて、スタビライザバー２０を保持可能とするためである。   The first tube part 50 includes a first main body part 51, a first fastening member locking part 52, and a first seal lip 53. The 1st main-body part 51 consists of a cylindrical rubber elastic body. The inner peripheral surface of the first main body 51 has the same diameter in all axial directions, and the inner diameter of the inner peripheral surface is slightly smaller than the outer diameter of the stabilizer bar 20. This is because the stabilizer bar 20 can be held in addition to allowing the stabilizer bar 20 to be inserted into the cylinder of the first main body 51.

また、第１本体部５１の外周面には、図２に示すように、Ｕ字型形状からなる。この第１本体部５１の外周面のＵ字型形状のうち平坦面は、車両ボディ４０に当接する部分である。そして、第１本体部５１の外周面のＵ字型形状のうち湾曲部は、図３の軸方向左側から軸方向右側に向かって内周面から遠ざかる凸状部５１ａ（本発明における第１係合部）が形成されている。すなわち、第１本体部５１の外周面の湾曲部は、図３の軸方向左側よりも軸方向右側の方が、肉厚が厚くなっている。ここで、第１本体部５１の凸状部５１ａは、締結部材３０のＵ字型形状部３１の内側面のうち軸方向中央より図１の左側部分に倣った形状からなる。つまり、第１本体部５１の凸状部５１ａは、締結部材３０のＵ字型形状部３１に対して軸方向左側に係合するようにされている。また、第１本体部５１の図３の軸方向右側の端面は、軸方向に直交する平面上に形成されている。   Further, the outer peripheral surface of the first main body 51 is formed in a U-shape as shown in FIG. Of the U-shaped shape of the outer peripheral surface of the first main body 51, the flat surface is a portion that contacts the vehicle body 40. In the U-shaped shape of the outer peripheral surface of the first main body 51, the curved portion is a convex portion 51a that moves away from the inner peripheral surface from the left side in the axial direction to the right side in FIG. Joint) is formed. That is, the curved portion of the outer peripheral surface of the first main body 51 is thicker on the right side in the axial direction than on the left side in the axial direction in FIG. Here, the convex part 51a of the first main body part 51 has a shape that follows the left part of FIG. 1 from the center in the axial direction on the inner surface of the U-shaped part 31 of the fastening member 30. That is, the convex portion 51 a of the first main body portion 51 is engaged with the U-shaped portion 31 of the fastening member 30 on the left side in the axial direction. Further, the end face on the right side in the axial direction of FIG. 3 of the first main body 51 is formed on a plane orthogonal to the axial direction.

第１締結部材係止部５２は、第１本体部５１の軸方向左端の外周側に、軸直角方向外方に突出するＵ字型形状をなしている。つまり、第１締結部材係止部５２の軸方向右側端面は、締結部材３０の軸方向左端に係合し、締結部材３０の軸方向位置の位置決めの役割を有している。   The first fastening member locking portion 52 has a U-shape that protrudes outward in the direction perpendicular to the axis on the outer peripheral side of the left end in the axial direction of the first main body portion 51. That is, the right end surface in the axial direction of the first fastening member locking portion 52 is engaged with the left end in the axial direction of the fastening member 30 and has a role of positioning the axial position of the fastening member 30.

第１シールリップ５３（本発明における第１環状突出部）は、第１本体部５１の軸方向左端の内周側に、第１本体部５１の内周面よりも軸直角方向内方へ突出し、且つ、内側先端部が第１本体部５１の反対側（図３の軸方向左側）へ向くように傾斜形成されている。つまり、第１シールリップ５３の内側先端部の内径は、第１本体部５１の内周面の内径よりも小さくされている。また、この第１シールリップ５３は、先端側ほど細くなるようにされている。   The first seal lip 53 (the first annular protrusion in the present invention) protrudes inward in the direction perpendicular to the axis from the inner peripheral surface of the first main body 51 on the inner peripheral side of the left end in the axial direction of the first main body 51. In addition, the inner front end portion is inclined so as to face the opposite side of the first main body portion 51 (the left side in the axial direction in FIG. 3). That is, the inner diameter of the inner tip of the first seal lip 53 is made smaller than the inner diameter of the inner peripheral surface of the first main body 51. The first seal lip 53 is made thinner toward the tip side.

第２筒部６０は、第２本体部６１と、第２締結部材係止部６２と、第２シールリップ６３とを有する。第２本体部６１は、筒状のゴム弾性体からなる。この第２本体部６１の内周面は、軸方向全てにおいて同径からなり、内周面の内径は、スタビライザバー２０の外径より僅かに小さくされている。さらに、この第２本体部６１の内周面の内径は、第１本体部５１の内周面の内径と同一とされている。   The second cylinder part 60 includes a second main body part 61, a second fastening member locking part 62, and a second seal lip 63. The 2nd main-body part 61 consists of a cylindrical rubber elastic body. The inner peripheral surface of the second main body portion 61 has the same diameter in all axial directions, and the inner diameter of the inner peripheral surface is slightly smaller than the outer diameter of the stabilizer bar 20. Further, the inner diameter of the inner peripheral surface of the second main body 61 is the same as the inner diameter of the inner peripheral surface of the first main body 51.

また、第２本体部６１の外周面には、図２に示すように、Ｕ字型形状からなる。この第２本体部６１の外周面のＵ字型形状のうち平坦面は、車両ボディ４０に当接する部分である。そして、第２本体部６１の外周面のＵ字型形状のうち湾曲部は、図３の軸方向右側から軸方向左側に向かって内周面から遠ざかる凸状部６１ａ（本発明における第２係合部）が形成されている。すなわち、第２本体部６１の外周面の湾曲部は、図３の軸方向右側よりも軸方向左側の方が、肉厚が厚くなっている。ここで、第２本体部６１の凸状部６１ａは、締結部材３０のＵ字型形状部３１の内側面のうち軸方向中央より図１の右側部分に倣った形状からなる。つまり、第２本体部６１の凸状部６１ａは、締結部材３０のＵ字型形状部３１に対して軸方向右側に係合するようにされている。また、第２本体部６１の図３の軸方向左側の端面は、軸方向に直交する平面上に形成されている。この第２本体部６１の図３の軸方向左側の端面は、車両組付時において、第１本体部５１の図３の軸方向右側の端面に当接する部位である。   Further, the outer peripheral surface of the second main body portion 61 has a U-shape as shown in FIG. The flat surface of the U-shaped shape of the outer peripheral surface of the second main body 61 is a portion that contacts the vehicle body 40. The curved portion of the U-shaped shape of the outer peripheral surface of the second main body portion 61 is a convex portion 61a (second relation in the present invention) that moves away from the inner peripheral surface from the right side in the axial direction toward the left side in the axial direction in FIG. Joint) is formed. In other words, the curved portion of the outer peripheral surface of the second main body 61 is thicker on the left side in the axial direction than on the right side in the axial direction in FIG. Here, the convex portion 61 a of the second main body portion 61 has a shape that follows the right side portion of FIG. 1 from the center in the axial direction on the inner surface of the U-shaped portion 31 of the fastening member 30. That is, the convex portion 61 a of the second main body portion 61 is engaged with the U-shaped portion 31 of the fastening member 30 on the right side in the axial direction. Further, the end face on the left side in the axial direction of FIG. 3 of the second main body 61 is formed on a plane orthogonal to the axial direction. The end face on the left side in the axial direction of FIG. 3 of the second main body 61 is a part that abuts on the end face on the right in the axial direction of FIG. 3 of the first main body 51 when the vehicle is assembled.

第２締結部材係止部６２は、第２本体部６１の軸方向右端の外周側に、軸直角方向外方に突出するＵ字型形状をなしている。つまり、第２締結部材係止部６２の軸方向左側端面は、締結部材３０の軸方向右端に係合し、締結部材３０の軸方向位置の位置決めの役割を有している。   The second fastening member locking portion 62 has a U-shape that protrudes outward in the direction perpendicular to the axis on the outer peripheral side of the right end of the second body portion 61 in the axial direction. That is, the left end surface in the axial direction of the second fastening member locking portion 62 is engaged with the right end in the axial direction of the fastening member 30 and has a role of positioning the axial position of the fastening member 30.

第２シールリップ６３（本発明における第２環状突出部）は、第２本体部６１の軸方向右端の内周側に、第２本体部６１の内周面よりも軸直角方向内方へ突出し、且つ、内側先端部が第２本体部６１の反対側（図３の軸方向右側）へ向くように傾斜形成されている。つまり、第２シールリップ６３の内側先端部の内径は、第２本体部６１の内周面の内径よりも小さくされている。また、この第２シールリップ６３は、先端側ほど細くなるようにされている。   The second seal lip 63 (second annular protruding portion in the present invention) protrudes inward in the direction perpendicular to the inner peripheral surface of the second main body 61 from the inner peripheral side of the right end of the second main body 61 in the axial direction. In addition, the inner front end portion is inclined so as to face the opposite side of the second main body portion 61 (the right side in the axial direction in FIG. 3). That is, the inner diameter of the inner front end portion of the second seal lip 63 is made smaller than the inner diameter of the inner peripheral surface of the second main body portion 61. The second seal lip 63 is made thinner toward the tip side.

このスタビライザブッシュ１０を車両へ組み付ける際には、第１筒部５０及び第２筒部６０をスタビライザバー２０へ挿通し、所定位置へ移動させる。そして、第１筒部５０の第１本体部５１の図３の軸方向右端面と第２筒部６０の第２本体部６１の図３の軸方向左端面とを当接させる。この状態にて、締結部材３０を第１本体部５１及び第２本体部６１の外周面に配置して、車両ボディ４０へボルトにより固定する。   When the stabilizer bush 10 is assembled to the vehicle, the first cylinder part 50 and the second cylinder part 60 are inserted into the stabilizer bar 20 and moved to a predetermined position. Then, the right end surface in the axial direction in FIG. 3 of the first main body portion 51 of the first cylindrical portion 50 and the left end surface in the axial direction in FIG. 3 of the second main body portion 61 of the second cylindrical portion 60 are brought into contact with each other. In this state, the fastening member 30 is arranged on the outer peripheral surfaces of the first main body portion 51 and the second main body portion 61 and fixed to the vehicle body 40 with bolts.

ここで、第１本体部５１と第２本体部５２とが当接した状態においては、軸方向中央の外周面が軸直角方向外方へ突出するような山型形状をなしている。この山型形状は、締結部材３０のＵ字型形状部３１の凹溝に倣う形状である。従って、締結部材３０を第１本体部５１及び第２本体部６１の外周面に配置することで、第１筒部５０と第２筒部６０とが離間することを防止できる。さらには、第１本体部５１と第２本体部６１との当接面に隙間が形成されることを抑制できる。   Here, when the first main body portion 51 and the second main body portion 52 are in contact with each other, the outer peripheral surface at the center in the axial direction has a mountain shape that protrudes outward in the direction perpendicular to the axis. This mountain shape is a shape that follows the concave groove of the U-shaped portion 31 of the fastening member 30. Therefore, by disposing the fastening member 30 on the outer peripheral surfaces of the first main body portion 51 and the second main body portion 61, it is possible to prevent the first tube portion 50 and the second tube portion 60 from separating. Furthermore, it can suppress that a clearance gap is formed in the contact surface of the 1st main-body part 51 and the 2nd main-body part 61. FIG.

このとき、第１本体部５１と第２本体部６１との当接面の外周端は、締結部材３０により被覆されている。従って、仮に、第１本体部５１と第２本体部６１との当接面に隙間が形成されたとしても、締結部材３０により、当該当接面から異物が侵入することを防止できる。   At this time, the outer peripheral end of the contact surface between the first main body 51 and the second main body 61 is covered with the fastening member 30. Therefore, even if a gap is formed on the contact surface between the first main body 51 and the second main body 61, the fastening member 30 can prevent foreign matter from entering from the contact surface.

上述したように、スタビライザブッシュ１０は、第１筒部５０と第２筒部６０とからなり、それぞれ別体に成形している。従って、第１筒部５０及び第２筒部６０は、何れもアンダーカット形状とはならない。従って、第１筒部５０の第１シールリップ５３及び第２筒部６０の第２シールリップ６３は、第１本体部５１及び第２本体部６１の内周面に対して、軸直角方向内方へ大きく突出するように成形することができる。これにより、シール性能を向上することができる。   As described above, the stabilizer bush 10 includes the first cylindrical portion 50 and the second cylindrical portion 60, and is molded separately. Therefore, neither the 1st cylinder part 50 nor the 2nd cylinder part 60 becomes an undercut shape. Accordingly, the first seal lip 53 of the first tube portion 50 and the second seal lip 63 of the second tube portion 60 are inwardly perpendicular to the inner peripheral surfaces of the first main body portion 51 and the second main body portion 61. It can shape | mold so that it may protrude greatly toward the direction. Thereby, sealing performance can be improved.

また、第１シールリップ５３及び第２シールリップ６３は、何れも環状をなしている。従って、第１シールリップ５３及び第２シールリップ６３そのものに隙間が形成されることがない。これにより、第１シールリップ５３及び第２シールリップ６３は、スタビライザバー２０の外周面を全周に亘って押圧することができるので、確実にシール性能を向上することができる。   The first seal lip 53 and the second seal lip 63 are both annular. Therefore, no gap is formed in the first seal lip 53 and the second seal lip 63 itself. Thereby, since the 1st seal lip 53 and the 2nd seal lip 63 can press the outer peripheral surface of the stabilizer bar 20 over a perimeter, it can improve a sealing performance reliably.

スタビライザブッシュ１０を車両に組み付けた状態の軸方向断面図を示す。An axial direction sectional view in the state where stabilizer bush 10 was attached to vehicles is shown. 図１のＡ方向矢視図を示す。The A direction arrow directional view of FIG. 1 is shown. スタビライザブッシュ１０単体、すなわち車両へ組み付ける前の状態の軸方向断面図を示す。The stabilizer bush 10 single-piece | unit, ie, the axial sectional view of the state before attaching to a vehicle is shown.

符号の説明Explanation of symbols

１０：スタビライザブッシュ、 ２０：スタビライザバー、 ３０：締結部材、
４０：車両ボディ、 ５０：第１筒部、 ６０：第２筒部、
５１：第１本体部、 ５２：第１締結部材係止部、 ５３：第１シールリップ、
６１：第２本体部、 ６２：第２締結部材係止部、 ６３：第２シールリップ 10: Stabilizer bush, 20: Stabilizer bar, 30: Fastening member,
40: vehicle body, 50: first tube portion, 60: second tube portion,
51: 1st main-body part, 52: 1st fastening member latching | locking part, 53: 1st seal lip,
61: 2nd main-body part, 62: 2nd fastening member latching | locking part, 63: 2nd seal lip

Claims (3)

筒状のゴム弾性体からなり、筒内部にスタビライザバーを挿通保持し、且つ、外周面を締結部材により押圧されて車両ボディに固定されるスタビライザブッシュであって、
内周面が同径の筒状からなる第１本体部と、前記第１本体部の軸方向第１側の端部の内周面全周に前記第１本体部の内周面より軸直角方向内方に突出する第１環状突出部とを有する第１筒部と、
内周面が同径の筒状からなり軸方向第１側の端面が前記第１本体部の軸方向第２側の端面に当接して配置される第２本体部と、前記第２本体部の軸方向第２側の端部の内周面全周に前記第２本体部の内周面より軸直角方向内方に突出する第２環状突出部とを有し、前記第１筒部と別体成形された第２筒部と、
を備えることを特徴とするスタビライザブッシュ。 A stabilizer bush made of a cylindrical rubber elastic body, having a stabilizer bar inserted and held inside the cylinder, and being fixed to the vehicle body by pressing the outer peripheral surface by a fastening member,
A first main body portion having a cylindrical shape with an inner peripheral surface, and an inner peripheral surface of the first main body portion on the first side in the axial direction of the first main body portion. The inner peripheral surface of the first main body portion is perpendicular to the inner peripheral surface of the first main body portion. A first tube portion having a first annular protrusion protruding inward in the direction;
A second main body portion having an inner peripheral surface formed of a cylindrical shape having the same diameter and having an end surface on the first axial side in contact with an end surface on the second axial side of the first main body portion; and the second main body portion A second annular projecting portion projecting inward in a direction perpendicular to the axial direction from the inner peripheral surface of the second main body portion on the entire inner peripheral surface of the end portion on the second axial side of the first cylindrical portion, A second cylindrical part molded separately;
A stabilizer bush characterized by comprising: 前記第１本体部の軸方向第２側の端面と前記第２本体部の軸方向第１側の端面との当接面のうち外周端は、前記締結部材により被覆される請求項１記載のスタビライザブッシュ。   2. The outer peripheral end of the contact surface between the end surface on the second axial direction side of the first main body portion and the end surface on the first axial direction side of the second main body portion is covered with the fastening member. Stabilizer bush. 前記第１本体部は、前記締結部材に対して軸方向第１側に係合する第１係合部を有し、
前記第２本体部は、前記締結部材に対して軸方向第２側に係合する第２係合部を有する請求項１又は２に記載のスタビライザブッシュ。 The first main body has a first engaging portion that engages with the fastening member on the first axial side,
The stabilizer bush according to claim 1 or 2, wherein the second main body portion has a second engagement portion that engages with the fastening member on the second axial side.
JP2006079242A 2006-03-22 2006-03-22 Stabilizer bush Pending JP2007253739A (en)

Priority Applications (1)

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JP2006079242A JP2007253739A (en) 2006-03-22 2006-03-22 Stabilizer bush

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Application Number Priority Date Filing Date Title
JP2006079242A JP2007253739A (en) 2006-03-22 2006-03-22 Stabilizer bush

Publications (1)

Publication Number Publication Date
JP2007253739A true JP2007253739A (en) 2007-10-04

Family

ID=38628417

Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110195754A (en) * 2018-02-26 2019-09-03 住友理工株式会社 The stabilizer bar of bonding lining of stabilizer and tape stabilizer bushing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110195754A (en) * 2018-02-26 2019-09-03 住友理工株式会社 The stabilizer bar of bonding lining of stabilizer and tape stabilizer bushing

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