JP5370417B2 - Steering device - Google Patents

Steering device Download PDF

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JP5370417B2
JP5370417B2 JP2011126763A JP2011126763A JP5370417B2 JP 5370417 B2 JP5370417 B2 JP 5370417B2 JP 2011126763 A JP2011126763 A JP 2011126763A JP 2011126763 A JP2011126763 A JP 2011126763A JP 5370417 B2 JP5370417 B2 JP 5370417B2
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vehicle body
pinion
hollow cylindrical
cylindrical portion
rib
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JP2012250675A (en
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高之 吉田
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NSK Ltd
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NSK Ltd
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Abstract

The utility model provides a rack-gear type steering device with light weight, and a housing of a rigid steering device at the vicinity of a vehicle body mounting part at an end part opposite to the side end part of a pinion is enlarged. A first rib (55) is integrally formed on a flange part (52) of the vehicle body mounting part (5) at the end part opposite to the side end part of the pinion; and the first rib (55) is formed towards the center of a hollow cylinder part (11) in the back-and-forth direction of the vehicle body and the center of the hollow cylinder part (11) in the up-and-down direction of the vehicle body from the flange part (52). Therefore, as the first rib (55) is formed slantwise relatively to the central axis of the hollow cylinder part (11), the rigidity of the deformation of the vehicle body mounting part (5) at the end part opposite to the side end part of the pinion is great, wherein the vehicle body mounting part is relative to both of the up-and-down direction of the vehicle body and the back-and-forth direction of the vehicle body; and the deformation of the vehicle body mounting part (5) at the end part opposite to the side end part of the pinion, relative to both of the up-and-down direction of the vehicle body and the back-and-forth direction of the vehicle body, is reduced.

Description

本発明はステアリング装置、特に、ラック軸を往復移動可能に内嵌する中空円筒部を有し、車体フレームに取り付け可能なステアリングギヤのハウジングを有するステアリング装置に関する。   The present invention relates to a steering device, and more particularly to a steering device having a hollow cylindrical portion that fits inside a rack shaft so as to be able to reciprocate and a steering gear housing that can be attached to a vehicle body frame.

ラックピニオン式ステアリング装置は、タイロッドを介して車輪の操舵角を変えるラック軸が、ステアリングギヤのハウジングに往復移動可能に支持され、ステアリングホイールの回転をラック軸に伝達するピニオン軸が、ステアリングギヤのハウジングに軸受を介して回転可能に軸支されている。   In a rack and pinion type steering device, a rack shaft that changes the steering angle of a wheel via a tie rod is supported by a housing of the steering gear so as to be able to reciprocate, and a pinion shaft that transmits the rotation of the steering wheel to the rack shaft is The housing is rotatably supported via a bearing.

このようなステアリングギヤのハウジングは、操舵時に車輪から伝達される操舵反力を受けるので、この操舵反力を吸収するために車体フレームに固定されている。すなわち、ハウジングの中空円筒部のピニオン側端部と反ピニオン側端部に各々形成された車体取り付け用ボス部にボルトを挿入し、このボルトを車体フレームに締め付けることで、ハウジングを車体フレームに固定している。   Since such a steering gear housing receives a steering reaction force transmitted from the wheels during steering, it is fixed to the vehicle body frame in order to absorb this steering reaction force. That is, a bolt is inserted into a boss portion for mounting a vehicle body formed on a pinion side end portion and a non-pinion side end portion of a hollow cylindrical portion of the housing, and the housing is fixed to the vehicle body frame by fastening the bolt to the vehicle body frame. doing.

反ピニオン側端部の車体取り付け用ボス部近傍は、ピニオン側端部の車体取り付け用ボス部近傍とは異なり、ピニオン軸挿入用の円柱状ボスやラックガイド挿入用の円柱状ボスが無い。従って、反ピニオン側端部の車体取り付け用ボス部近傍の剛性が小さく、操舵反力が作用した時の反ピニオン側端部の車体取り付け用ボス部近傍の変形が大きくなり、その結果として、操縦安定性が低下する不具合が生じる。   Unlike the vicinity of the boss portion for mounting the vehicle body at the end portion on the anti-pinion side, unlike the vicinity of the boss portion for mounting the vehicle body on the end portion of the pinion side, there is no cylindrical boss for inserting the pinion shaft and no cylindrical boss for inserting the rack guide. Therefore, the rigidity in the vicinity of the boss for mounting the vehicle on the side opposite to the pinion is small, and the deformation near the boss for mounting on the side on the side opposite to the pinion when the steering reaction force is applied increases. There arises a problem that the stability is lowered.

特許文献１に開示されたラックピニオン式のステアリング装置は、反ピニオン側端部の車体取り付け用ボス部と中空円筒部との結合部に、中空円筒部との接続側が互いに交わり、反ピニオン側の車体取り付け用ボス部との接続側が互いに離間した二個のリブを、Ｖ字形に形成して、反ピニオン側端部の車体取り付け用ボス部近傍の剛性を大きくしている。しかし、特許文献１に開示されたラックピニオン式のステアリング装置は、二個のリブで剛性を大きくしているため、軽量化の点で問題がある。   In the rack and pinion type steering device disclosed in Patent Document 1, the connection side of the hollow cylindrical portion intersects with the coupling portion of the vehicle body mounting boss portion and the hollow cylindrical portion at the end portion on the anti-pinion side, and the anti-pinion side Two ribs that are separated from each other on the connection side with the body mounting boss portion are formed in a V shape to increase the rigidity in the vicinity of the body mounting boss portion at the end portion on the side opposite to the pinion. However, the rack and pinion type steering device disclosed in Patent Document 1 has a problem in terms of weight reduction because the rigidity is increased by two ribs.

国際公開第ＷＯ２００７／０６０８８７号パンフレットInternational Publication No. WO2007 / 060887 Pamphlet

本発明は、軽量で、反ピニオン側端部の車体取り付け部近傍の剛性を大きくしたステアリングギヤのハウジングを有するラックピニオン式ステアリング装置を提供することを課題とする。   It is an object of the present invention to provide a rack and pinion type steering device having a steering gear housing that is lightweight and has increased rigidity in the vicinity of a vehicle body attachment portion at an end portion on the side opposite to the pinion.

上記課題は以下の手段によって解決される。すなわち、第１番目の発明は、ステアリングシャフトの下端に取り付けられたピニオンの回転で往復移動するラック軸を摺動可能に内嵌する中空円筒部を有し、車体フレームに取り付け可能なハウジング、上記ハウジングの中空円筒部のピニオン側端部と反ピニオン側端部の両方に、中空円筒部の外周から車体前後方向のいずれか一方に突出して形成され、ハウジングを車体フレームに取り付けるための取り付け孔が車体上下方向に形成された車体取り付け部、上記反ピニオン側端部の車体取り付け部と中空円筒部外周とを接続する一個の第１のリブを備え、上記車体取り付け部は上記車体フレームに当接する当接面が下面に形成され、車体上下方向の厚さが小さいフランジ部と、上記フランジ部から車体上方側に延びて一体的に形成され、フランジ部よりも車体左右方向の幅が狭く車体上下方向の厚さが大きいボス部とを備え、上記第１のリブは上記中空円筒部の軸線に対して傾斜して形成されていることを特徴とするステアリング装置である。
The above problem is solved by the following means. That is, the first invention has a hollow cylindrical portion that slidably fits a rack shaft that reciprocates by rotation of a pinion attached to a lower end of a steering shaft, and a housing that can be attached to a vehicle body frame, Both the pinion-side end and the non-pinion-side end of the hollow cylindrical portion of the housing are formed so as to protrude from the outer periphery of the hollow cylindrical portion to either the vehicle body front-rear direction, and mounting holes for attaching the housing to the vehicle body frame are formed. A vehicle body attachment portion formed in the vertical direction of the vehicle body, a first rib that connects the vehicle body attachment portion at the end on the side opposite to the pinion and the outer periphery of the hollow cylindrical portion, and the vehicle body attachment portion abuts on the vehicle body frame A contact surface is formed on the lower surface, the flange portion having a small thickness in the vertical direction of the vehicle body, and integrally formed extending from the flange portion to the vehicle body upper side, Than lunge portion and a width of the lateral direction of the vehicle body is narrow vertical direction of the vehicle body in the thickness is large boss, wherein said first rib is formed to be inclined to the axis of the hollow cylindrical portion Is a steering device.

本発明のステアリング装置は、ハウジングの中空円筒部のピニオン側端部と反ピニオン側端部の両方に、中空円筒部の外周から車体前後方向のいずれか一方に突出して形成され、ハウジングを車体フレームに取り付けるための取り付け孔が車体上下方向に形成された車体取り付け部と、反ピニオン側端部の車体取り付け部と中空円筒部外周とを接続する一個の第１のリブを備え、第１のリブは、反ピニオン側端部の車体取り付け部のフランジ部から中空円筒部の車体前後方向の中心及び車体上下方向の中心に向かって形成されていることを特徴としている。   The steering device according to the present invention is formed on both the pinion side end and the non-pinion side end of the hollow cylindrical portion of the housing so as to protrude from the outer periphery of the hollow cylindrical portion to either one of the vehicle body longitudinal direction. A vehicle body mounting portion in which a mounting hole for mounting on the vehicle body is formed in the vertical direction of the vehicle body, and a first rib for connecting the vehicle body mounting portion on the side opposite to the pinion and the outer periphery of the hollow cylindrical portion. Is characterized in that it is formed from the flange portion of the vehicle body attachment portion at the end on the side opposite to the pinion toward the center of the hollow cylindrical portion in the longitudinal direction of the vehicle body and the center in the vertical direction of the vehicle body.

従って、第１のリブは、中空円筒部の中心軸線に対して傾斜して形成されるため、反ピニオン側端部の車体取り付け部の車体上下方向と車体前後方向の両方の変形に対する剛性が大きく、反ピニオン側端部の車体取り付け部の車体前後方向と車体上下方向の両方の変形が減少する。また、一個のリブで済むため、ステアリングギヤを軽量化することができる。   Therefore, since the first rib is formed to be inclined with respect to the central axis of the hollow cylindrical portion, the rigidity against deformation in both the vehicle body vertical direction and the vehicle body front-rear direction of the vehicle body attachment portion at the end on the side opposite to the pinion is large. The deformation in both the longitudinal direction of the vehicle body and the vertical direction of the vehicle body of the vehicle body mounting portion at the end on the side opposite to the pinion is reduced. Further, since only one rib is required, the steering gear can be reduced in weight.

本発明の実施例のステアリング装置を示し、コラムアシスト型ラックピニオン式ステアリング装置の全体斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view of a column assist type rack and pinion type steering device according to an embodiment of the present invention. 図１のステアリングギヤのハウジングの要部を示す正面図である。It is a front view which shows the principal part of the housing of the steering gear of FIG. 図２の平面図である。FIG. 3 is a plan view of FIG. 2. 図３のＡ−Ａ断面図である。It is AA sectional drawing of FIG.

図１は本発明の実施例のステアリング装置を示し、コラムアシスト型ラックピニオン式パワーステアリング装置の全体斜視図である。図１に示すように、本発明の実施例のコラムアシスト型ラックピニオン式パワーステアリング装置は、ステアリングホイール１０１の操作力を軽減するために、コラム１０５の中間部に取付けたモータ１０２の操舵補助力をステアリングシャフトに付与している。そして、ステアリングシャフトの回転を中間シャフト１０６に伝達し、ピニオン軸１０７を介してラックピニオン式のステアリングギヤ１０３のラック軸を往復移動させ、タイロッド１０４を介して舵輪を操舵している。   FIG. 1 shows a steering apparatus according to an embodiment of the present invention, and is an overall perspective view of a column assist type rack and pinion type power steering apparatus. As shown in FIG. 1, the column assist type rack and pinion type power steering apparatus according to the embodiment of the present invention has a steering assist force of a motor 102 attached to an intermediate portion of a column 105 in order to reduce an operation force of a steering wheel 101. Is added to the steering shaft. Then, the rotation of the steering shaft is transmitted to the intermediate shaft 106, the rack shaft of the rack and pinion type steering gear 103 is reciprocated via the pinion shaft 107, and the steered wheel is steered via the tie rod 104.

図２は図１のステアリングギヤのハウジング１の要部を示す正面図である。図３は図２の平面図である。図４は図３のＡ−Ａ断面図である。本発明の実施例のステアリングギヤ１０３のハウジング１は、フロントサブフレーム等の車体フレーム２（図４参照）に取り付けられている。   FIG. 2 is a front view showing a main part of the housing 1 of the steering gear of FIG. FIG. 3 is a plan view of FIG. 4 is a cross-sectional view taken along the line AA in FIG. The housing 1 of the steering gear 103 according to the embodiment of the present invention is attached to a vehicle body frame 2 (see FIG. 4) such as a front subframe.

図２の紙面に直交する手前側が車体後方側、図２の紙面に直交する奥側が車体前方側、図２の左右方向が車体左右方向、図２の上方向が車体上方側、図２の下方向が車体下方側である。また、図３の紙面に直交する手前側が車体上方側、図３の紙面に直交する奥側が車体下方側、図３の左右方向が車体左右方向、図３の上方向が車体前方側、図３の下方向が車体後方側である。   The front side perpendicular to the paper surface of FIG. 2 is the rear side of the vehicle body, the back side orthogonal to the paper surface of FIG. 2 is the front side of the vehicle body, the left-right direction of FIG. 2 is the left-right direction of the vehicle body, the upward direction of FIG. The direction is the vehicle body lower side. 3 is the vehicle body upper side, the rear side orthogonal to the paper surface of FIG. 3 is the vehicle body lower side, the left-right direction of FIG. 3 is the vehicle body left-right direction, and the upper direction of FIG. The downward direction is the vehicle body rear side.

ステアリングギヤ１０３のハウジング１はアルミニウム合金のダイキャスト製で、中空円筒部１１の内周１２には、図２、図３の左右方向に摺動可能にラック軸３１が内嵌している。ラック軸３１の左右両端には図示しないボールジョイントソケットが各々ねじ込まれて取り付けられ、、ボールジョイントソケットに連結されたタイロッド（図１参照）１０４、１０４が、図示しないナックルアームを介して車輪に接続されている。   The housing 1 of the steering gear 103 is made of aluminum alloy die-cast, and a rack shaft 31 is fitted in the inner periphery 12 of the hollow cylindrical portion 11 so as to be slidable in the left and right directions of FIGS. Ball joint sockets (not shown) are screwed and attached to the left and right ends of the rack shaft 31, and tie rods 104 and 104 (see FIG. 1) connected to the ball joint sockets are connected to the wheels via knuckle arms (not shown). Has been.

中空円筒部１１の左端には、中空円筒部１１の外周１５から車体上方側へ突出してピニオン軸挿入用の円柱状ボス１３が一体的に形成され、このピニオン軸挿入用の円柱状ボス１３に挿入されたピニオン軸３２の下端には、ラック軸３１に噛み合う図示しないピニオンが形成されている。ピニオン軸３２の上端は、ステアリングホイール１０１に連結された図１の自在継手１０８の下端に連結されている。   A cylindrical boss 13 for inserting a pinion shaft is integrally formed at the left end of the hollow cylindrical portion 11 so as to protrude from the outer periphery 15 of the hollow cylindrical portion 11 to the upper side of the vehicle body. A pinion (not shown) that meshes with the rack shaft 31 is formed at the lower end of the inserted pinion shaft 32. The upper end of the pinion shaft 32 is connected to the lower end of the universal joint 108 in FIG. 1 connected to the steering wheel 101.

中空円筒部１１の左端には、ピニオン軸挿入用の円柱状ボス１３に隣接して、中空円筒部１１の外周１５から車体後方側（紙面に直交する手前方向）に突出して、ラックガイド挿入用の円柱状ボス１４が一体的に形成されている。このラックガイド挿入用の円柱状ボス１４には、図示しないラックガイドが挿入され、ラック軸３１の背面（ラック歯面と反対側）をローラー等により案内して、ピニオンとの噛み合い時の反力によるラック軸３１の変形を防止して、ラック軸３１が円滑に摺動するようにしている。   At the left end of the hollow cylindrical portion 11, adjacent to the columnar boss 13 for pinion shaft insertion, protrudes from the outer periphery 15 of the hollow cylindrical portion 11 to the rear side of the vehicle body (front direction perpendicular to the paper surface) for rack guide insertion The cylindrical boss 14 is integrally formed. A rack guide (not shown) is inserted into the cylindrical boss 14 for inserting the rack guide, and the back surface of the rack shaft 31 (the side opposite to the rack tooth surface) is guided by a roller or the like to react with the pinion. The rack shaft 31 is prevented from being deformed by the above, so that the rack shaft 31 slides smoothly.

運転者がステアリングホイール１０１を回転すると、ピニオン軸３２のピニオンが回転し、ピニオンの回転に応じて、ラック軸３１が左右に摺動して、車輪の操舵角を変えることができる。   When the driver rotates the steering wheel 101, the pinion of the pinion shaft 32 rotates, and the rack shaft 31 slides to the left and right according to the rotation of the pinion, so that the steering angle of the wheel can be changed.

中空円筒部１１の左端（ピニオン側端部）、及び、中空円筒部１１の右端（反ピニオン側端部）には、中空円筒部１１の外周１５から車体後方側（紙面に直交する手前方向）に突出して、車体取り付け部４、５が形成されている。車体取り付け部４、５には、雌ねじ（取り付け孔）４１、５１が車体上下方向（図２の上下方向、図３の紙面に直交する方向）に各々一箇所形成されている。雌ねじ４１、５１に車体下方側からボルト６（図４参照）をねじ込み、ボルト６を車体フレーム２に締め付けることで、ハウジング１を車体フレーム２に固定する。   The left end (pinion side end) of the hollow cylindrical portion 11 and the right end (anti-pinion side end) of the hollow cylindrical portion 11 are located on the rear side of the vehicle body from the outer periphery 15 of the hollow cylindrical portion 11 (front direction perpendicular to the paper surface). The vehicle body attaching portions 4 and 5 are formed so as to protrude from the front. Female screws (mounting holes) 41, 51 are formed in the vehicle body attachment portions 4, 5 at one location in the vehicle body vertical direction (the vertical direction in FIG. 2, the direction perpendicular to the plane of FIG. 3). Bolts 6 (see FIG. 4) are screwed into the female screws 41 and 51 from the lower side of the vehicle body, and the bolts 6 are fastened to the vehicle body frame 2 to fix the housing 1 to the vehicle body frame 2.

車体取り付け部４、５には、車体左右方向の幅が広く車体上下方向の厚さが小さいフランジ部４２、５２が形成され、フランジ部４２、５２の下面に形成された当接面４２１、５２１が車体フレーム２の上面（図４参照）２１に当接して、ボルト６によって車体フレーム２に締め付けられる。両方のフランジ部４２、５２には、フランジ部４２、５２から車体上方側に延びて形成され、フランジ部４２、５２よりも車体左右方向の幅が狭く車体上下方向の厚さが大きいボス部４３、５３が形成されている。   The vehicle body attachment portions 4 and 5 are formed with flange portions 42 and 52 that are wide in the left-right direction of the vehicle body and small in thickness in the vertical direction of the vehicle body, and contact surfaces 421 and 521 formed on the lower surfaces of the flange portions 42 and 52. Comes into contact with the upper surface (see FIG. 4) 21 of the body frame 2 and is fastened to the body frame 2 by the bolts 6. Both flange portions 42, 52 are formed to extend from the flange portions 42, 52 to the upper side of the vehicle body, and the boss portion 43 has a narrower width in the left-right direction of the vehicle body and a greater thickness in the vertical direction of the vehicle body than the flange portions 42, 52. , 53 are formed.

ボス部４３、５３の車体左右方向の幅をフランジ部４２、５２の車体左右方向の幅と同一にすれば、ボス部４３、５３の剛性を大きくすることができる。しかし、ダイキャスト成型時の巣の発生を抑制するために、フランジ部４２、５２の車体左右方向の幅よりもボス部４３、５３の車体左右方向の幅を狭くしている。   If the width of the boss parts 43, 53 in the left-right direction of the vehicle body is made the same as the width of the flange parts 42, 52 in the left-right direction of the vehicle body, the rigidity of the boss parts 43, 53 can be increased. However, the width of the boss portions 43 and 53 in the left-right direction of the vehicle body is made narrower than the width of the flange portions 42 and 52 in the left-right direction of the vehicle body in order to suppress the occurrence of nests during die casting.

反ピニオン側端部の車体取り付け部５近傍の変形を抑制するために、反ピニオン側端部のフランジ部５２には、フランジ部５２と中空円筒部１１の外周１５とを接続する一個の第１のリブ５５が形成されている。第１のリブ５５は、フランジ部５２から中空円筒部１１の車体前後方向の中心及び車体上下方向の中心に向かって形成されている。   In order to suppress deformation in the vicinity of the vehicle body attachment portion 5 at the end portion on the anti-pinion side, the flange portion 52 at the end portion on the anti-pinion side has one first connecting the flange portion 52 and the outer periphery 15 of the hollow cylindrical portion 11. The rib 55 is formed. The first rib 55 is formed from the flange portion 52 toward the center of the hollow cylindrical portion 11 in the vehicle longitudinal direction and the center of the vehicle vertical direction.

また、両方のボス部４３、５３には、ボス部４３、５３の上面の車体左右方向の両端に、ボス部４３、５３の上面と中空円筒部１１の外周１５とを接続する第２のリブ４４、４４、５４、５４が形成されている。   Further, a second rib connecting the upper surface of the boss portions 43 and 53 and the outer periphery 15 of the hollow cylindrical portion 11 to both ends of the upper surface of the boss portions 43 and 53 in the left-right direction of the vehicle body. 44, 44, 54, 54 are formed.

上記したように、反ピニオン側端部の車体取り付け部５のフランジ部５２には、フランジ部５２から中空円筒部１１の車体前後方向の中心及び車体上下方向の中心に向かって形成された第１のリブ５５が一体的に形成されている。従って、第１のリブ５５は、中空円筒部１１の中心軸線に対して傾斜して形成されるため、反ピニオン側端部の車体取り付け部５の車体上下方向と車体前後方向の両方の変形に対する剛性が大きく、反ピニオン側端部の車体取り付け部５の車体前後方向と車体上下方向の両方の変形が減少する。そのため、ステアリングギヤ１０３に操舵反力が作用した時の操縦安定性が向上する。また、一個のリブで済むため、ステアリングギヤ１０３を軽量化することができる。   As described above, the flange portion 52 of the vehicle body attachment portion 5 at the end on the side opposite to the pinion is formed from the flange portion 52 toward the center of the hollow cylindrical portion 11 in the longitudinal direction of the vehicle body and the center in the vertical direction of the vehicle body. The rib 55 is integrally formed. Accordingly, since the first rib 55 is formed to be inclined with respect to the central axis of the hollow cylindrical portion 11, the first rib 55 against the deformation in both the vehicle body vertical direction and the vehicle longitudinal direction of the vehicle body attachment portion 5 at the end on the anti-pinion side. The rigidity is large, and deformation of both the vehicle body longitudinal direction and the vehicle body vertical direction of the vehicle body attachment portion 5 at the end on the side opposite to the pinion is reduced. Therefore, steering stability when a steering reaction force acts on the steering gear 103 is improved. Further, since only one rib is required, the steering gear 103 can be reduced in weight.

また、反ピニオン側端部の車体取り付け部５のボス部５３の上面と中空円筒部１１の外周１５とを接続する第２のリブ５４、５４が、反ピニオン側端部の車体取り付け部５の捩れ方向の変形に対する剛性を大きくしている。   Further, the second ribs 54, 54 connecting the upper surface of the boss portion 53 of the vehicle body attachment portion 5 at the anti-pinion side end portion and the outer periphery 15 of the hollow cylindrical portion 11 are provided on the anti-pinion side end portion of the vehicle body attachment portion 5. The rigidity against deformation in the twist direction is increased.

上記実施例では、コラムアシスト型ラックピニオン式パワーステアリング装置に適用した例について説明したが、ピニオンアシスト型ラックピニオン式パワーステアリング装置やマニュアル型ラックピニオン式ステアリング装置に適用してもよい。   In the above-described embodiment, an example in which the present invention is applied to a column assist type rack and pinion type power steering apparatus has been described. However, the present invention may be applied to a pinion assist type rack and pinion type power steering apparatus and a manual type rack and pinion type steering apparatus.

１０１ ステアリングホイール
１０２ モータ
１０３ ステアリングギヤ
１０４ タイロッド
１０５ コラム
１０６ 中間シャフト
１０７ ピニオン軸
１０８ 自在継手
１ ハウジング
１１ 中空円筒部
１２ 内周
１３ ピニオン軸挿入用の円柱状ボス
１４ ラックガイド挿入用の円柱状ボス
１５ 外周
２ 車体フレーム
２１ 上面
３１ ラック軸
３２ ピニオン軸
４ 車体取り付け部
４１ 雌ねじ（取り付け孔）
４２ フランジ部
４２１ 当接面
４３ ボス部
４４ 第２のリブ
５ 車体取り付け部
５１ 雌ねじ（取り付け孔）
５２ フランジ部
５２１ 当接面
５３ ボス部
５４ 第２のリブ
５５ 第１のリブ
６ ボルト DESCRIPTION OF SYMBOLS 101 Steering wheel 102 Motor 103 Steering gear 104 Tie rod 105 Column 106 Intermediate shaft 107 Pinion shaft 108 Universal joint 1 Housing 11 Hollow cylindrical part 12 Inner circumference 13 Cylindrical boss for pinion axis insertion 14 Cylindrical boss for rack guide insertion 15 Outer circumference 2 body frame 21 upper surface 31 rack shaft 32 pinion shaft 4 vehicle body mounting portion 41 female screw (mounting hole)
42 Flange part 421 Contact surface 43 Boss part 44 2nd rib 5 Car body attachment part 51 Female screw (attachment hole)
52 Flange portion 521 Contact surface 53 Boss portion 54 Second rib 55 First rib 6 Bolt

Claims (1)

ステアリングシャフトの下端に取り付けられたピニオンの回転で往復移動するラック軸を摺動可能に内嵌する中空円筒部を有し、車体フレームに取り付け可能なハウジング、
上記ハウジングの中空円筒部のピニオン側端部と反ピニオン側端部の両方に、中空円筒部の外周から車体前後方向のいずれか一方に突出して形成され、ハウジングを車体フレームに取り付けるための取り付け孔が車体上下方向に形成された車体取り付け部、
上記反ピニオン側端部の車体取り付け部と中空円筒部外周とを接続する一個の第１のリブを備え、
上記車体取り付け部は、上記車体フレームに当接する当接面が下面に形成され、車体上下方向の厚さが小さいフランジ部と、
上記フランジ部から車体上方側に延びて一体的に形成され、フランジ部よりも車体左右方向の幅が狭く車体上下方向の厚さが大きいボス部とを備え、
上記第１のリブは、上記中空円筒部の軸線に対して傾斜して形成されていること
を特徴とするステアリング装置。 A housing having a hollow cylindrical portion that slidably fits a rack shaft that reciprocates by rotation of a pinion attached to a lower end of a steering shaft, and that can be attached to a vehicle body frame;
A mounting hole for attaching the housing to the vehicle body frame, which is formed on both the pinion side end portion and the non-pinion side end portion of the hollow cylindrical portion of the housing so as to protrude from the outer periphery of the hollow cylindrical portion to either the vehicle body longitudinal direction. A vehicle body mounting portion formed in the vehicle body vertical direction
A first rib for connecting the vehicle body attachment portion at the end portion on the side opposite to the pinion and the outer periphery of the hollow cylindrical portion;
The vehicle body mounting portion has a contact surface that contacts the vehicle body frame formed on the lower surface, and a flange portion having a small thickness in the vertical direction of the vehicle body,
A boss part that extends from the flange part to the upper side of the vehicle body and is integrally formed, and has a narrower width in the left-right direction of the vehicle body and a greater thickness in the vertical direction of the vehicle body than the flange part,
The steering device according to claim 1, wherein the first rib is formed to be inclined with respect to an axis of the hollow cylindrical portion .
JP2011126763A 2011-06-06 2011-06-06 Steering device Active JP5370417B2 (en)

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JP2017124640A (en) * 2014-04-23 2017-07-20 日本精工株式会社 Housing for rack-and-pinion type steering gear unit
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CN111959602A (en) * 2020-08-26 2020-11-20 武汉嘉迅汽车配件有限公司 Rack and pinion drive mechanism casing and motor vehicle rack and pinion steering system
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