JP2014104959A - Steering device - Google Patents

Steering device Download PDF

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JP2014104959A
JP2014104959A JP2012262040A JP2012262040A JP2014104959A JP 2014104959 A JP2014104959 A JP 2014104959A JP 2012262040 A JP2012262040 A JP 2012262040A JP 2012262040 A JP2012262040 A JP 2012262040A JP 2014104959 A JP2014104959 A JP 2014104959A
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bush
housing
rack shaft
groove
annular groove
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Isamu Arai
勇 新井
Yoshimochi Tamaki
愛望 玉木
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Showa Corp
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Showa Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a bush slidably supporting the outer periphery of a rack shaft with interference fit in a radial direction and in an axial direction relative to a circular groove of a housing and interference fit between the outer periphery of the rack shaft and the bush so as to reduce occurence of collision noise during sliding of the rack shaft.SOLUTION: A steering device is configured by loading a bush 10 into a circular groove 11 formed in the inner periphery of a housing 2 and supporting slidably the outer periphery of a rack shaft 3 in the bush 10, where the bush 10 is a spiral bush 10 whose spiral both ends are cut off. When the spiral bush 10 is loaded into the circular groove 11 of the housing 2, the outer diameter and the width in the shaft direction of the bush 10 have elastic interference fit to the groove bottom diameter and the groove width respectively of the circular groove 11.

Description

本発明はステアリング装置に関する。   The present invention relates to a steering device.

ラックアンドピニオン式ステアリング装置におけるラック軸の支持構造として、特許文献１、２に記載のものがある。   As a rack shaft support structure in a rack and pinion type steering device, there are those described in Patent Documents 1 and 2.

特許文献１に記載のステアリング装置は、ハウジングの内周に設けた環状溝にブッシュを装填し、このブッシュにラック軸の外周を摺動自在に支持する。ブッシュはハウジングの環状溝の溝底径とラック軸の外径との間に締め代をもつ。   In the steering device described in Patent Document 1, a bush is loaded in an annular groove provided on the inner periphery of a housing, and the outer periphery of the rack shaft is slidably supported by the bush. The bush has an allowance between the groove bottom diameter of the annular groove of the housing and the outer diameter of the rack shaft.

特許文献２に記載のステアリング装置は、軸受本体の軸方向に延びる複数のスリットにより拡縮できる軸受本体を縮径させるように該軸受本体の外周溝に弾性リングを装填し、軸受本体に装填された弾性リングをハウジングの内周面に弾性的な締め代をもって嵌装するとともに、ハウジングに対する軸受本体の軸方向への移動を弾性的に規制する規制手段を設けた状態で、軸受本体の内周の摺動面にラック軸の外周を挿入し、ラック軸を弾性リングの弾発力をもって摺動自在に締め付ける。   In the steering device described in Patent Document 2, an elastic ring is loaded in the outer peripheral groove of the bearing body so as to reduce the diameter of the bearing body that can be expanded and contracted by a plurality of slits extending in the axial direction of the bearing body, and is loaded into the bearing body. The elastic ring is fitted on the inner peripheral surface of the housing with an elastic margin, and the restricting means for elastically restricting the axial movement of the bearing main body with respect to the housing is provided. The outer periphery of the rack shaft is inserted into the sliding surface, and the rack shaft is slidably tightened by the elastic force of the elastic ring.

特開2009-120027JP2009-120027 特開2006-234152JP 2006-234152

特許文献１に記載のステアリング装置では、ハウジングの環状溝に装填されたブッシュの軸方向幅が、該環状溝の溝幅に対してガタ（隙間）をもつ。従って、ラック軸の外周がブッシュとの間に締め代をもって軸方向に摺動するとき、ラック軸に連れ動こうとするブッシュが環状溝の内部で軸方向に動いて溝壁面に衝突し、衝突音を生じて商品性を損なう。   In the steering device described in Patent Document 1, the axial width of the bush loaded in the annular groove of the housing has a backlash (gap) with respect to the groove width of the annular groove. Therefore, when the outer periphery of the rack shaft slides in the axial direction with a clearance between the bush and the bush, the bush that moves with the rack shaft moves in the axial direction inside the annular groove and collides with the groove wall surface. Produces noise and damages merchandise.

特許文献２に記載のステアリング装置では、弾性リングが軸受本体の外周溝に装填され、ハウジングの内周面に嵌装される前段階で、弾性リングの外径がハウジングの内周径より大きく、弾性リングの内径が軸受本体の外周溝の溝底径より小さく設定される必要がある。また、規制手段がハウジングに対する軸受本体の軸方向への移動を規制し得る軸方向長を安定的に具備する必要がある。弾性リングの設定寸法や劣化によっては、軸受本体を収縮させ、かつハウジングの内周面との間に締め代を確保することができず、ラック軸を弾性リングの弾発力をもって摺動自在に締め付けできない。また、規制手段の設定寸法や劣化によっては、規制手段が軸受本体の軸方向への移動を規制できない。ラック軸は軸受本体との間に締め代をもたずに摺動し、或いは軸受本体がハウジングの内部で軸方向に動いてしまい、結果としてラック軸の外周と軸受本体の内周の摺動面との衝突音を生ずるおそれがある。   In the steering device described in Patent Literature 2, the outer diameter of the elastic ring is larger than the inner peripheral diameter of the housing in a stage before the elastic ring is loaded into the outer peripheral groove of the bearing body and fitted to the inner peripheral surface of the housing. The inner diameter of the elastic ring needs to be set smaller than the groove bottom diameter of the outer peripheral groove of the bearing body. Further, it is necessary that the restricting means stably has an axial length that can restrict the movement of the bearing body in the axial direction relative to the housing. Depending on the set dimensions and deterioration of the elastic ring, the bearing body can be shrunk, and the tightening allowance between the inner peripheral surface of the housing cannot be secured and the rack shaft can be slid freely with the elastic force of the elastic ring. It cannot be tightened. Further, depending on the set size and deterioration of the restricting means, the restricting means cannot restrict the movement of the bearing body in the axial direction. The rack shaft slides between the bearing body without tightening, or the bearing body moves in the axial direction inside the housing, and as a result, the outer periphery of the rack shaft and the inner periphery of the bearing body slide. There is a risk of collision noise with the surface.

本発明の課題は、ラック軸の外周を摺動自在に支持するブッシュに、ハウジングの環状溝に対する径方向と軸方向の締め代をもたせるとともに、ラック軸の外周との間の締め代をもたせ、ラック軸の摺動時における衝突音の発生を抑えることにある。   The object of the present invention is to provide a bushing that slidably supports the outer periphery of the rack shaft in a radial direction and an axial direction with respect to the annular groove of the housing, and a tightening margin between the outer periphery of the rack shaft, The object is to suppress the occurrence of collision noise when the rack shaft slides.

請求項１に係る発明は、ハウジングの内周に設けた環状溝にブッシュを装填し、このブッシュにラック軸の外周を摺動自在に支持してなるステアリング装置において、前記ブッシュが螺旋に沿う両端部を切離された螺旋状ブッシュとされ、螺旋状ブッシュをハウジングの環状溝へ装填したときに、該ブッシュの外径と軸方向幅のそれぞれが、該環状溝の溝底径と溝幅のそれぞれに対して弾性的な締め代をもつようにしたものである。   The invention according to claim 1 is a steering device in which a bush is loaded in an annular groove provided in the inner periphery of a housing, and the outer periphery of the rack shaft is slidably supported by the bush. When the helical bush is loaded into the annular groove of the housing, the outer diameter and the axial width of the bush are respectively the groove bottom diameter and groove width of the annular groove. Each has an elastic tightening allowance.

請求項２に係る発明は、請求項１に係る発明において更に、前記螺旋状ブッシュをハウジングの環状溝へ装填する前段階で、該ブッシュの外径と軸方向幅のそれぞれが、該環状溝の溝底径と溝幅のそれぞれより大きく設定されてなるようにしたものである。   According to a second aspect of the present invention, in the first aspect of the invention according to the first aspect, before the helical bush is loaded into the annular groove of the housing, each of the outer diameter and the axial width of the bush The groove bottom diameter and the groove width are set larger than each other.

請求項３に係る発明は、請求項１又は２に係る発明において更に、前記螺旋状ブッシュが合成樹脂からなるようにしたものである。   The invention according to claim 3 is the invention according to claim 1 or 2, wherein the spiral bush is made of a synthetic resin.

（請求項１）
(a)螺旋状ブッシュをハウジングの環状溝へ装填したときに、該ブッシュの外径と軸方向幅のそれぞれが、該環状溝の溝底径と溝幅のそれぞれに対して弾性的な締め代をもつ。これにより、ハウジングの環状溝に装填されたブッシュは、該環状溝に対し径方向と軸方向の両方に対してガタをもたない。 (Claim 1)
(a) When the helical bush is loaded into the annular groove of the housing, the outer diameter and the axial width of the bush are elastic tightening margins with respect to the groove bottom diameter and the groove width, respectively. It has. Thereby, the bush loaded in the annular groove of the housing does not have a backlash in both the radial direction and the axial direction with respect to the annular groove.

同時に、この螺旋状ブッシュは、ハウジングの環状溝へ上述の如くに装填されたときの該ブッシュの内径の設定により、ラック軸の外周との間にも締め代をもつものとされる。   At the same time, the helical bush has an allowance between the outer periphery of the rack shaft by setting the inner diameter of the bush when loaded into the annular groove of the housing as described above.

これによれば、ラック軸の摺動時に、ブッシュが環状溝の内部で径方向や軸方向に動いて溝底面や溝壁面に衝突することはないし、ラック軸の外周がブッシュの摺動面に衝突することもなく、衝突音の発生を抑えることができる。   According to this, when the rack shaft slides, the bush does not move radially or axially inside the annular groove and collide with the groove bottom surface or the groove wall surface, and the outer periphery of the rack shaft does not contact the sliding surface of the bush. The occurrence of a collision sound can be suppressed without causing a collision.

（請求項２）
(b)前記螺旋状ブッシュをハウジングの環状溝へ装填する前段階で、該ブッシュの外径と軸方向幅のそれぞれが、該環状溝の溝底径と溝幅のそれぞれより大きく設定される。これにより、螺旋状ブッシュの外径と軸方向幅のそれぞれを収縮させてハウジングの環状溝へ装填した後、該ブッシュの外径と軸方向幅のそれぞれが弾発的復元により拡張し、該環状溝の径方向と軸方向の両方に対して弾性的な締め代をもつものになる。 (Claim 2)
(b) Before the helical bush is loaded into the annular groove of the housing, the outer diameter and the axial width of the bush are set larger than the groove bottom diameter and the groove width of the annular groove, respectively. As a result, the outer diameter and the axial width of the spiral bush are contracted and loaded into the annular groove of the housing, and then the outer diameter and the axial width of the bush are expanded by elastic restoration. It has elastic interference in both the radial direction and the axial direction of the groove.

（請求項３）
(c)前記螺旋状ブッシュが合成樹脂からなるものとすることにより、ブッシュは確実に上述(a)、(b)の弾性的な締め代をもってラック軸の外周を安定的に摺動自在に支持できる。 (Claim 3)
(c) Since the spiral bush is made of synthetic resin, the bush reliably supports the outer periphery of the rack shaft in a stable and slidable manner with the elastic fastening margins described in (a) and (b) above. it can.

図１は電動パワーステアリング装置を示す正面図である。FIG. 1 is a front view showing an electric power steering apparatus. 図２はラック軸の支持構造を示す断面図である。FIG. 2 is a cross-sectional view showing a rack shaft support structure. 図３は螺旋状ブッシュを示し、（Ａ）は自由状態の正面図、（Ｂ）は装填状態の正面図である。FIG. 3 shows a spiral bush, (A) is a front view in a free state, and (B) is a front view in a loaded state.

図１に示す電動パワーステアリング装置１は、ラックアンドピニオン式を構成するラック軸３をハウジング２に支持したものである。即ち、ステアリング装置１は、ステアリングホイールに連結された入力軸４と、入力軸４にトーションバーを介して連結された出力軸（不図示）をハウジング２に支持し、出力軸に設けたピニオンと噛み合うラックを備えたラック軸３をハウジング２に支持している。そして、ステアリング装置１は、操舵輪にナックルアームを介して連結された左右のタイロッド５と、ハウジング２の左右両側に突出するラック軸３の両端部とをボールジョイント６により連結している。ステアリング装置１は、ステアリングホイールに加える手入力の操舵力と、電動モータ７による操舵補助力をラック軸３に伝達し、操舵を行なう。   An electric power steering apparatus 1 shown in FIG. 1 is configured such that a rack shaft 3 constituting a rack and pinion type is supported by a housing 2. That is, the steering device 1 supports an input shaft 4 connected to the steering wheel and an output shaft (not shown) connected to the input shaft 4 via a torsion bar on the housing 2, and a pinion provided on the output shaft. A rack shaft 3 having racks that mesh with each other is supported by the housing 2. In the steering device 1, the left and right tie rods 5 connected to the steered wheels via the knuckle arms and the both ends of the rack shaft 3 protruding from the left and right sides of the housing 2 are connected by ball joints 6. The steering device 1 performs steering by transmitting a manually input steering force applied to the steering wheel and a steering assist force by the electric motor 7 to the rack shaft 3.

ここで、ステアリング装置１にあっては、ラック軸３を、図２に示す如く、ハウジング２の内周に組付けた金属ブッシュ８、樹脂ブッシュ１０等により支持している。以下、樹脂ブッシュ１０によるラック軸３の支持構造について詳述する。   Here, in the steering device 1, the rack shaft 3 is supported by a metal bush 8, a resin bush 10, and the like assembled on the inner periphery of the housing 2 as shown in FIG. 2. Hereinafter, the support structure of the rack shaft 3 by the resin bush 10 will be described in detail.

ステアリング装置１は、ハウジング２の内周に設けた円環状の環状溝１１にブッシュ１０を装填し、このブッシュ１０にラック軸３の外周を摺動自在に支持する。   In the steering device 1, a bush 10 is loaded into an annular ring groove 11 provided on the inner periphery of the housing 2, and the outer periphery of the rack shaft 3 is slidably supported on the bush 10.

ブッシュ１０は、図３に示す如く、合成樹脂からなり、螺旋に沿う両端部を切離された螺旋状をなす。螺旋状ブッシュ１０は、中心軸まわりの１点に定めた一端部から一定の回転半径で概ね１回転（360度）する間、他端部が一端部に対し中心軸方向に一定長上昇した螺旋状をなす。螺旋状ブッシュ１０において螺旋の回転方向に直交する横断面形状は、矩形断面だけでなく、円形断面、楕円形断面、台形断面等でも良い。螺旋状ブッシュ１０の両端面は、螺旋の回転方向に対して斜交する切口をなす。   As shown in FIG. 3, the bush 10 is made of a synthetic resin and has a spiral shape in which both ends along the spiral are separated. The spiral bush 10 is a spiral in which the other end rises by a certain length in the direction of the central axis with respect to the one end while making one rotation (360 degrees) from the one end defined at one point around the central axis with a constant rotation radius. Shape. The cross-sectional shape orthogonal to the rotational direction of the spiral in the spiral bush 10 may be not only a rectangular cross section but also a circular cross section, an elliptical cross section, a trapezoidal cross section, and the like. Both end surfaces of the spiral bush 10 form a cut that is oblique to the direction of spiral rotation.

螺旋状ブッシュ１０は、ハウジング２の環状溝１１へ装填される前段階、換言すれば自由状態で、該ブッシュ１０の外径ｄ0と軸方向幅ｗ0のそれぞれを、環状溝１１の溝底径ａと溝幅ｂのそれぞれより大きく設定してある（図３（Ａ））。従って、螺旋状ブッシュ１０は、ハウジング２の環状溝１１へ装填される過程で、その外径ｄ0と軸方向幅ｗ0のそれぞれを径方向と幅方向のそれぞれにおいて弾発的に大きく収縮され、該環状溝１１へ装填されたときにはそれらの径方向と幅方向の収縮を弾発的に復元するように拡張する。これにより、螺旋状ブッシュ１０は、環状溝１１へ装填されたときには、それらの径方向と幅方向の復元力により、その外径ｄ1と軸方向幅ｗ1のそれぞれが、該環状溝１１の溝底径ａと溝幅ｂのそれぞれに対して弾性的な締め代をもつものになって環状溝１１の溝内に不動状態にて固定化される（図３（Ｂ））。 The spiral bush 10 is in a stage before being loaded into the annular groove 11 of the housing 2, that is, in a free state, and the outer diameter d 0 and the axial width w 0 of the bush 10 are respectively set to the groove bottom of the annular groove 11. The diameter a and the groove width b are set larger (FIG. 3A). Therefore, spiral bush 10 is in the process of being loaded into the annular groove 11 of the housing 2, is resiliently large shrinkage in each respective radial direction and the width direction of the outer diameter d 0 and axial width w 0 When the annular groove 11 is loaded, it expands so that the contraction in the radial direction and the width direction is restored resiliently. Thereby, when the helical bush 10 is loaded into the annular groove 11, the outer diameter d 1 and the axial width w 1 of the annular groove 11 are caused by the restoring force in the radial direction and the width direction, respectively. Each of the groove bottom diameter “a” and the groove width “b” has an elastic interference, and is fixed in the groove of the annular groove 11 in an immobile state (FIG. 3B).

螺旋状ブッシュ１０は、ハウジング２の環状溝１１へ上述の如くに装填されたときの該ブッシュ１０の内径の設定により、この内径に挿入されるラック軸３の外周との間にも締め代をもつ。   When the helical bush 10 is loaded into the annular groove 11 of the housing 2 as described above, the clearance between the outer periphery of the rack shaft 3 inserted into the inner diameter of the bush 10 is set by the setting of the inner diameter of the bush 10. Have.

本実施例によれば以下の作用効果を奏する。
(a)螺旋状ブッシュ１０をハウジング２の環状溝１１へ装填したときに、該ブッシュ１０の外径ｄ1と軸方向幅ｗ1のそれぞれが、該環状溝１１の溝底径ａと溝幅ｂのそれぞれに対して弾性的な締め代をもつ。これにより、ハウジング２の環状溝１１に装填されたブッシュ１０は、該環状溝１１に対し径方向と軸方向の両方に対してガタをもたない。 According to the present embodiment, the following operational effects can be obtained.
(a) When the helical bush 10 is loaded into the annular groove 11 of the housing 2, the outer diameter d 1 and the axial width w 1 of the bush 10 respectively correspond to the groove bottom diameter a and the groove width of the annular groove 11. Each b has an elastic interference. As a result, the bush 10 loaded in the annular groove 11 of the housing 2 has no backlash in both the radial direction and the axial direction with respect to the annular groove 11.

同時に、この螺旋状ブッシュ１０は、ハウジング２の環状溝１１へ上述の如くに装填されたときの該ブッシュ１０の内径の設定により、ラック軸３の外周との間にも締め代をもつものとされる。   At the same time, the helical bush 10 has a tightening margin with the outer periphery of the rack shaft 3 by setting the inner diameter of the bush 10 when loaded into the annular groove 11 of the housing 2 as described above. Is done.

これによれば、ラック軸３の摺動時に、ブッシュ１０が環状溝１１の内部で径方向や軸方向に動いて溝底面や溝壁面に衝突することはないし、ラック軸３の外周がブッシュ１０の摺動面に衝突することもなく、衝突音の発生を抑えることができる。   According to this, when the rack shaft 3 slides, the bush 10 does not move in the radial direction or the axial direction inside the annular groove 11 to collide with the groove bottom surface or the groove wall surface. It is possible to suppress the occurrence of collision noise without colliding with the sliding surface.

(b)前記螺旋状ブッシュ１０をハウジング２の環状溝１１へ装填する前段階で、該ブッシュ１０の外径ｄ0と軸方向幅ｗ0のそれぞれが、該環状溝１１の溝底径ａと溝幅ｂのそれぞれより大きく設定される。これにより、螺旋状ブッシュ１０の外径ｄ0と軸方向幅ｗ0のそれぞれを収縮させてハウジング２の環状溝１１へ装填した後、該ブッシュ１０の外径ｄ1と軸方向幅ｗ1のそれぞれが弾発的復元により拡張し、該環状溝１１の径方向と軸方向の両方に対して弾性的な締め代をもつものになる。 (b) Before the helical bush 10 is loaded into the annular groove 11 of the housing 2, the outer diameter d 0 and the axial width w 0 of the bush 10 are the groove bottom diameter a of the annular groove 11, respectively. It is set larger than each of the groove widths b. Thus, after the outer diameter d 0 and the axial width w 0 of the spiral bush 10 are contracted and loaded into the annular groove 11 of the housing 2, the outer diameter d 1 and the axial width w 1 of the bush 10 are reduced. Each expands by elastic restoration, and has an elastic interference with respect to both the radial direction and the axial direction of the annular groove 11.

(c)前記螺旋状ブッシュ１０が合成樹脂からなるものとすることにより、ブッシュ１０は確実に上述(a)、(b)の弾性的な締め代をもってラック軸３の外周を安定的に摺動自在に支持できる。   (c) Since the helical bush 10 is made of a synthetic resin, the bush 10 reliably slides on the outer periphery of the rack shaft 3 with the elastic fastening allowances (a) and (b) described above. Can be supported freely.

尚、ラック軸３が摺動するとき、螺旋状ブッシュ３０がラック軸３に及ぼす摺動抵抗の反力よりも、該ブッシュ１０の弾性的反発力の方を大きく設定することにより、環状溝１１の内部での該ブッシュ１０の上記摺動抵抗に起因する軸方向の変形（縮み）を防止できる。   When the rack shaft 3 slides, the annular groove 11 is set by setting the elastic repulsive force of the bush 10 larger than the reaction force of the sliding resistance that the spiral bush 30 exerts on the rack shaft 3. It is possible to prevent deformation (shrinkage) in the axial direction due to the sliding resistance of the bush 10 inside the bush.

以上、本発明の実施例を図面により詳述したが、本発明の具体的な構成はこの実施例に限られるものではなく、本発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。本発明は、電動パワーステアリング装置に限らず、広く一般のステアリング装置に適用できる。   The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. The present invention is not limited to the electric power steering device but can be widely applied to general steering devices.

本発明は、ハウジングの内周に設けた環状溝にブッシュを装填し、このブッシュにラック軸の外周を摺動自在に支持してなるステアリング装置において、前記ブッシュが螺旋に沿う両端部を切離された螺旋状ブッシュとされ、螺旋状ブッシュをハウジングの環状溝へ装填したときに、該ブッシュの外径と軸方向幅のそれぞれが、該環状溝の溝底径と溝幅のそれぞれに対して弾性的な締め代をもつ。これにより、ラック軸の外周を摺動自在に支持するブッシュに、ハウジングの環状溝に対する径方向と軸方向の締め代をもたせるとともに、ラック軸の外周との間の締め代をもたせ、ラック軸の摺動時における衝突音の発生を抑えることができる。   The present invention provides a steering device in which a bush is loaded in an annular groove provided on the inner periphery of a housing, and the outer periphery of a rack shaft is slidably supported by the bush. When the helical bush is loaded into the annular groove of the housing, the outer diameter and the axial width of the bush are respectively set to the groove bottom diameter and the groove width of the annular groove. Has elastic tightening allowance. As a result, the bush that slidably supports the outer periphery of the rack shaft has a radial and axial tightening allowance with respect to the annular groove of the housing, and a tightening allowance between the rack shaft and the outer periphery of the rack shaft. Generation of collision noise during sliding can be suppressed.

１ ステアリング装置
２ ハウジング
３ ラック軸
１０ 螺旋状ブッシュ
１１ 環状溝 DESCRIPTION OF SYMBOLS 1 Steering device 2 Housing 3 Rack shaft 10 Spiral bush 11 Annular groove

Claims (3)

ハウジングの内周に設けた環状溝にブッシュを装填し、このブッシュにラック軸の外周を摺動自在に支持してなるステアリング装置において、
前記ブッシュが螺旋に沿う両端部を切離された螺旋状ブッシュとされ、
螺旋状ブッシュをハウジングの環状溝へ装填したときに、該ブッシュの外径と軸方向幅のそれぞれが、該環状溝の溝底径と溝幅のそれぞれに対して弾性的な締め代をもつことを特徴とするステアリング装置。 In a steering device in which a bush is loaded in an annular groove provided on the inner periphery of the housing, and the outer periphery of the rack shaft is slidably supported by the bush.
The bush is a spiral bush separated at both ends along the spiral,
When the helical bush is loaded into the annular groove of the housing, each of the outer diameter and the axial width of the bush has an elastic margin with respect to each of the groove bottom diameter and the groove width of the annular groove. A steering apparatus characterized by the above. 前記螺旋状ブッシュをハウジングの環状溝へ装填する前段階で、該ブッシュの外径と軸方向幅のそれぞれが、該環状溝の溝底径と溝幅のそれぞれより大きく設定されてなる請求項１に記載のステアリング装置。   2. The outer diameter and the axial width of the bush are set to be larger than the groove bottom diameter and the groove width, respectively, before the helical bush is loaded into the annular groove of the housing. A steering device according to claim 1. 前記螺旋状ブッシュが合成樹脂からなる請求項１又は２に記載のステアリング装置。   The steering apparatus according to claim 1 or 2, wherein the spiral bush is made of a synthetic resin.
JP2012262040A 2012-11-30 2012-11-30 Steering device Pending JP2014104959A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4954745A (en) * 1972-04-07 1974-05-28
JP2006234152A (en) * 2005-02-28 2006-09-07 Oiles Ind Co Ltd Bearing mechanism with sliding bearing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4954745A (en) * 1972-04-07 1974-05-28
JP2006234152A (en) * 2005-02-28 2006-09-07 Oiles Ind Co Ltd Bearing mechanism with sliding bearing

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