JP2003240010A - Universal joint and steering device - Google Patents
Universal joint and steering deviceInfo
- Publication number
- JP2003240010A JP2003240010A JP2002043941A JP2002043941A JP2003240010A JP 2003240010 A JP2003240010 A JP 2003240010A JP 2002043941 A JP2002043941 A JP 2002043941A JP 2002043941 A JP2002043941 A JP 2002043941A JP 2003240010 A JP2003240010 A JP 2003240010A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- cam
- bolt
- universal joint
- side plates
- 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.)
- Pending
Links
Landscapes
- Steering Controls (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、軸心が交叉、又は
偏心した２軸を回転伝達可能に連結すべく用いられる自
在継手に関し、また、この種の自在継手をステアリング
ホイールに連なるコラム軸と舵取機構への入力軸との連
結部に備える車両用の操舵装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal joint used for connecting two shafts whose axes are intersecting or eccentric to each other so that rotation can be transmitted. Further, the universal joint of this type is used as a column shaft connected to a steering wheel. The present invention relates to a steering device for a vehicle, which is provided in a connecting portion with an input shaft to a steering mechanism.
【０００２】[0002]
【従来の技術】車両の操舵装置は、車室の内部での運転
者によるステアリングホイールの回転操作を車室の外部
に配された舵取機構に伝え、該舵取機構の動作により操
向用の車輪（一般的には左右の前輪）を操向せしめる構
成となっている。このような操舵装置においては、ステ
アリングホイールに連なり車室外に延長されたコラム軸
の端部と、舵取機構の入力軸の端部とを回転伝達可能に
連結する必要があり、これらの軸端間に同心性を確保す
ることは難しいことから、この連結のために、図７に示
す如く構成された中間軸が用いられている。2. Description of the Related Art A steering device for a vehicle transmits a steering wheel rotation operation by a driver inside a vehicle compartment to a steering mechanism arranged outside the vehicle compartment, and the steering mechanism operates to steer the vehicle. The wheels (generally the left and right front wheels) can be steered. In such a steering device, it is necessary to connect the end of the column shaft connected to the steering wheel and extended to the outside of the vehicle compartment and the end of the input shaft of the steering mechanism so that rotation can be transmitted. Since it is difficult to secure concentricity between them, an intermediate shaft configured as shown in FIG. 7 is used for this connection.
【０００３】図示の如く中間軸１は、軸本体２の両側に
自在継手３，３を取付けて構成されている。自在継手３
は、一対のヨーク30，30を、二股のフォーク状をなす夫
々のピン受け部31，31が向き合うように組み合わせ、こ
れらの先端部を十字形のクロスピン33により連結した公
知の構成を備えており、一側のヨーク30のピン受け部31
に連設された軸保持部32を軸本体２の端部に嵌着せし
め、該軸本体２と共に中間軸１を構成している。As shown in the figure, the intermediate shaft 1 is constructed by mounting universal joints 3 on both sides of a shaft body 2. Universal joint 3
Has a known configuration in which a pair of yokes 30 and 30 are combined so that the fork-shaped fork-shaped pin receiving portions 31 and 31 face each other, and the tips thereof are connected by a cross-shaped cross pin 33. , Pin receiving part 31 of one side yoke 30
The shaft holding portion 32 connected to the shaft main body 2 is fitted to the end portion of the shaft main body 2 to form the intermediate shaft 1 together with the shaft main body 2.
【０００４】このような中間軸１によるコラム軸５及び
入力軸６の連結は、両軸５，６の端部を、夫々の側の自
在継手３の残りのヨーク30の軸保持部32により保持させ
ることにより実現される。この連結に際しては、図７中
に２点鎖線により示す如く位置するコラム軸５と入力軸
６の軸端部に前記ヨーク30を後付けすることが必要とな
り、この後付けを可能とするため、コラム軸５及び入力
軸６の少なくとも一方の側の自在継手３が、図８に示す
如きヨーク30を備えている。The connection of the column shaft 5 and the input shaft 6 by the intermediate shaft 1 is held by the shaft holding portions 32 of the remaining yokes 30 of the universal joints 3 on the respective sides. It is realized by At the time of this connection, it is necessary to retrofit the yoke 30 to the shaft end portions of the column shaft 5 and the input shaft 6 which are located as shown by the chain double-dashed line in FIG. 7. 5, the universal joint 3 on at least one side of the input shaft 6 is provided with a yoke 30 as shown in FIG.
【０００５】図８は、自在継手３のヨーク30とコラム軸
５の軸端部との結合構造の説明図である。図示の如くヨ
ーク30の軸保持部32は、２枚の側板34，34の一側を底板
35により連絡してなり、他側が開放されたＵ字形断面を
有しており、前記側板34，34には、前記底板35から離れ
た位置を厚さ方向に貫通するボルト孔36，36が形成され
ている。FIG. 8 is an explanatory view of the connecting structure of the yoke 30 of the universal joint 3 and the shaft end of the column shaft 5. As shown in the figure, the shaft holding portion 32 of the yoke 30 has two side plates 34, 34 with one side being a bottom plate.
35. The side plates 34, 34 are connected with each other by a U-shaped cross section, and bolt holes 36, 36 are formed in the side plates 34, 34 in a thickness direction at positions apart from the bottom plate 35. Has been done.
【０００６】このような軸保持部32に保持されるコラム
軸５の軸端部は、前記側板34，34間に受容可能な幅を有
する矩形断面を有しており、図８（ａ）に示す如く、前
記側板34，34間に開口側から挿入され、この挿入の後、
一方の側板34の外側から前記ボルト孔36，36にカムボル
ト７を通し、他方の側板34の外側に突出するカムボルト
７のねじ部に締め付けナット８を締め付けることによ
り、図８（ｂ）に示す如く軸保持部32に保持される。The shaft end of the column shaft 5 held by the shaft holding portion 32 has a rectangular cross section having a width receivable between the side plates 34, 34, as shown in FIG. As shown, it is inserted from the opening side between the side plates 34, 34, and after this insertion,
By inserting the cam bolt 7 into the bolt holes 36, 36 from the outside of the one side plate 34 and tightening the tightening nut 8 on the screw portion of the cam bolt 7 protruding to the outside of the other side plate 34, as shown in FIG. It is held by the shaft holding portion 32.
【０００７】前記カムボルト７は、側板34，34間に位置
する部分に、本来の直径を長径とする楕円形のカム部70
を備えている。このカム部70は、前記ナット８の締め付
け前にカムボルト７を回転することにより、前記コラム
軸５の軸端部を押圧し、軸保持部32の底板35に押し付け
る作用をなし、これによりコラム軸５とヨーク30との同
心性が確保される。The cam bolt 7 has an elliptical cam portion 70 having an original diameter as a major axis at a portion located between the side plates 34, 34.
Is equipped with. The cam portion 70 has a function of pressing the shaft end portion of the column shaft 5 by rotating the cam bolt 7 before tightening the nut 8 and pressing it against the bottom plate 35 of the shaft holding portion 32. The concentricity of 5 and the yoke 30 is secured.
【０００８】[0008]
【発明が解決しようとする課題】さて、以上の如き自在
継手３，３を備える中間軸１を用いたコラム軸５と入力
軸６との連結は、まず、コラム軸５及び入力軸６の軸端
部に夫々の側の自在継手３，３のヨーク30，30を仮止め
しておき、この状態で両軸５，６間にて中間軸１の軸長
方向位置を調整し、最後に、前記ヨーク30，30をコラム
軸５及び入力軸６の軸端部に強固に固定する手順にて行
われる。The connection between the column shaft 5 and the input shaft 6 using the intermediate shaft 1 provided with the universal joints 3 and 3 as described above is carried out by first connecting the column shaft 5 and the input shaft 6 to each other. The yokes 30, 30 of the universal joints 3, 3 on the respective sides are temporarily fixed to the ends, and in this state, the axial length direction position of the intermediate shaft 1 is adjusted between the shafts 5, 6, and finally, The procedure is performed by firmly fixing the yokes 30, 30 to the shaft ends of the column shaft 5 and the input shaft 6.
【０００９】この手順は、コラム軸５及び入力軸６の少
なくとも一方の側の自在継手３が図８に示すヨーク30を
備えることにより、コラム軸５及び入力軸６の軸間距離
を変えずに行える。ところが、前記ヨーク30の仮止め
が、これの側板34，34間にコラム軸５又は入力軸６の軸
端部を挿入するのみで行われている場合、前記手順の実
行中にヨーク30がコラム軸５又は入力軸６から抜け落ち
易く、コラム軸５及び入力軸６の連結作業に支障を来す
という問題があった。In this procedure, since the universal joint 3 on at least one side of the column shaft 5 and the input shaft 6 is provided with the yoke 30 shown in FIG. 8, the axial distance between the column shaft 5 and the input shaft 6 is not changed. You can do it. However, if the yoke 30 is temporarily fixed only by inserting the shaft end portion of the column shaft 5 or the input shaft 6 between the side plates 34, 34 of the yoke 30, the yoke 30 is not supported by the column during the execution of the procedure. There is a problem in that the column shaft 5 and the input shaft 6 are likely to come off from the shaft 5 and the connection work of the column shaft 5 and the input shaft 6 is hindered.
【００１０】この問題を回避するためには、前記側板3
4，34にカムボルト７を通し、該カムボルト７のねじ部
に締め付けナット８を緩く螺合しておく必要があり、こ
れらの作業に手間を要する上、この場合においても、カ
ムボルト７による前述した押し付けがなされず、また側
板34，34間での挾圧がなされないことから、ヨーク30の
抜け落ちを確実に防止することは難しい。In order to avoid this problem, the side plate 3
It is necessary to pass the cam bolt 7 through 4, 34 and loosely screw the tightening nut 8 to the threaded portion of the cam bolt 7, which requires time and labor, and in this case also, the above-mentioned pressing by the cam bolt 7 is necessary. It is difficult to reliably prevent the yoke 30 from slipping out, because it is not performed and the pressure between the side plates 34 and 34 is not exerted.
【００１１】本発明は斯かる事情に鑑みてなされたもの
であり、対象となる軸へのヨークの仮止めを簡易に、し
かも確実に行わせることができ、正規の結合状態を容易
に実現することができる自在継手を提供することを目的
とする。The present invention has been made in view of the above circumstances, and it is possible to easily and surely perform temporary fixing of the yoke to the target shaft, and to easily realize a proper connection state. An object of the present invention is to provide a universal joint that can be used.
【００１２】[0012]
【課題を解決するための手段】本発明の第１発明に係る
自在継手は、２枚の側板を一側の底板により連絡してな
るＵ字形断面の軸保持部を備え、前記側板間に挿入され
た軸の端部を、両側板の対応位置を貫通する支持孔に挿
通支持されたカム体と、前記底板との間に挾圧固定する
構成とした自在継手において、前記カム体と前記支持孔
との間に介装された弾性材料製の抜け止め部材を備える
ことを特徴とする。A universal joint according to a first aspect of the present invention is provided with a shaft holding portion having a U-shaped cross section in which two side plates are connected by a bottom plate on one side and is inserted between the side plates. In the universal joint having a structure in which the end of the shaft is inserted and supported in a supporting hole penetrating through the corresponding positions of both side plates and the bottom plate, the universal joint has the cam body and the supporting body. A retaining member made of an elastic material is provided between the hole and the retaining member.
【００１３】本発明においては、対象となる軸への仮止
めのために軸保持部の２枚の側板を貫通する支持孔に通
されるカム体に、前記支持孔との間に介装された弾性材
料製の抜け止め部材が弾接し、前記カム体の軸方向の移
動及び軸回りの回転に抵抗を加え、前記仮止め時におけ
るカム体の抜け出しを、簡易に、しかも確実に防止す
る。According to the present invention, a cam body which is inserted into a supporting hole penetrating two side plates of the shaft holding portion for temporarily fixing the shaft to a target is interposed between the cam body and the supporting hole. Further, the retaining member made of an elastic material makes elastic contact, and resists the movement of the cam body in the axial direction and the rotation around the shaft, so that the coming out of the cam body at the time of the temporary fixing can be easily and surely prevented.
【００１４】また本発明の第２発明に係る自在継手は、
第１発明におけるカム体が、前記軸端部を挾圧すべく２
枚の側板を締め付けるボルトの一部に一体形成してある
ことを特徴とし、また第３発明に係る自在継手は、第１
発明におけるカム体が、前記軸端部を挾圧すべく２枚の
側板を締め付けるナットの一部に一体形成してあること
を特徴とする。The universal joint according to the second aspect of the present invention is
The cam body according to the first aspect of the present invention is provided so as to press the shaft end portion.
A universal joint according to a third aspect of the invention is characterized in that it is integrally formed with a part of a bolt for fastening the side plates.
In the invention, the cam body is integrally formed with a part of a nut for tightening the two side plates so as to press the shaft end portion.
【００１５】これらの発明においては、側板間に軸端部
を挾圧すべく用いるボルト又はナットの一部にカム体を
一体形成し、部品点数の削減を図る。In these inventions, the cam body is integrally formed with a part of a bolt or a nut used to press the shaft end portion between the side plates to reduce the number of parts.
【００１６】更に本発明の第４発明に係る操舵装置は、
操舵に応じて回転するコラム軸と舵取機構の入力軸との
連結部に、第１〜第３発明の自在継手を備えることを特
徴とする。Further, a steering device according to a fourth aspect of the present invention is
A universal joint according to any one of the first to third inventions is provided at a connecting portion between a column shaft that rotates according to steering and an input shaft of a steering mechanism.
【００１７】この発明においては、操舵のためのステア
リングホイールの操作に応じて回転するコラム軸と、舵
取機構への入力軸との連結部に、両軸に対する仮止め
を、容易に、しかも確実に行わせ得る本発明に係る自在
継手を用い、予め位置決めされた前記コラム軸と前記入
力軸との間での連結部の位置調整を容易化し、良好な連
結を少工数にて実現する。In the present invention, the column shaft, which rotates in response to the operation of the steering wheel for steering, and the input shaft to the steering mechanism can be temporarily and easily temporarily fixed to both shafts. By using the universal joint according to the present invention which can be carried out, it becomes easy to adjust the position of the connecting portion between the column shaft and the input shaft which are pre-positioned, and good connection is realized in a small number of steps.
【００１８】[0018]
【発明の実施の形態】以下本発明をその実施の形態を示
す図面に基づいて詳述する。図１は、本発明に係る自在
継手の側面図であり、前記図７と同様、車両のコラム軸
５と舵取機構への入力軸６とを連結すべく、両軸５，６
間に介装して用いられる中間軸１への適用例が示されて
いる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings showing the embodiments thereof. FIG. 1 is a side view of a universal joint according to the present invention. As in the case of FIG. 7, both shafts 5, 6 are connected to connect a column shaft 5 of a vehicle and an input shaft 6 to a steering mechanism.
An example of application to the intermediate shaft 1 which is interposed and used is shown.
【００１９】図１に示す中間軸１は、軸本体２の両側に
本発明に係る自在継手４，４を備えて構成されている。
自在継手４は、図７に示す自在継手３と同様、二股のフ
ォーク形をなすピン受け部41の一側に軸保持部42を連設
してなる一対のヨーク40，40を備え、これらを、夫々の
ピン受け部41，41の側が互いに向き合うように組み合わ
せ、略直交して位置する両ピン受け部41，41の二股の先
端を十字形のクロスピン43により連結した公知の構成を
備えており、一側のヨーク40の軸保持部42を軸本体２の
端部に嵌着し、該軸本体２と中間軸１を構成している。The intermediate shaft 1 shown in FIG. 1 is constructed by equipping both sides of a shaft body 2 with universal joints 4, 4 according to the present invention.
Similar to the universal joint 3 shown in FIG. 7, the universal joint 4 is provided with a pair of yokes 40, 40 in which a shaft holding portion 42 is continuously provided on one side of a bifurcated fork-shaped pin receiving portion 41. , The respective pin receiving portions 41, 41 are assembled so that the sides thereof face each other, and the bifurcated ends of both pin receiving portions 41, 41 positioned substantially orthogonal to each other are connected by a cross-shaped cross pin 43. The shaft holding portion 42 of the yoke 40 on one side is fitted to the end of the shaft body 2 to form the shaft body 2 and the intermediate shaft 1.
【００２０】図１中には、ステアリングホイールに連な
るコラム軸５の端部と、舵取機構の入力軸（例えば、ラ
ックピニオン式舵取機構のピニオン軸）６の端部とが、
２点鎖線により示されており、このようなコラム軸５及
び入力軸６の前記中間軸１による連結は、両軸５，６の
端部を、夫々の側の自在継手４，４の残されたヨーク4
0，40の軸保持部42，42に保持させることにより実現さ
れている。In FIG. 1, an end of a column shaft 5 connected to the steering wheel and an end of an input shaft 6 of a steering mechanism (for example, a pinion shaft of a rack and pinion type steering mechanism) 6 are shown.
As shown by the chain double-dashed line, such connection of the column shaft 5 and the input shaft 6 by the intermediate shaft 1 is such that the ends of both shafts 5 and 6 are left behind on the respective side of the universal joints 4 and 4. York 4
This is realized by holding the 0, 40 shaft holding portions 42, 42.
【００２１】図２は、本発明の第１の実施の形態を示す
自在継手４のヨーク40と軸（図においてはコラム軸５）
との結合構造の説明図である。図示の如くヨーク40は、
二股のフォーク形をなすピン受け部41の一側に、コラム
軸５との連結のための軸保持部42を備えている。この軸
保持部42は、軸心を挾んで略平行をなして対向する２枚
の側板44，44の一側を底板45により連絡し、他側が開放
されたＵ字形の断面形状を有している。FIG. 2 shows a yoke 40 and a shaft of a universal joint 4 showing a first embodiment of the present invention (a column shaft 5 in the drawing).
It is explanatory drawing of the coupling structure with. As shown, the yoke 40 is
A shaft holding portion 42 for connection with the column shaft 5 is provided on one side of the fork-shaped pin receiving portion 41. The shaft holding portion 42 has a U-shaped cross-sectional shape in which one side of two side plates 44, 44 facing each other with the axis centered in between is connected by a bottom plate 45, and the other side is opened. There is.
【００２２】軸保持部42の側板44，44には、前記底板45
から離れて互いに対向する位置に、夫々を厚さ方向に貫
通し、後述するカムボルト７の支持孔となるボルト孔4
6，46が形成されている。図示の自在継手４において、
一方の側板44のボルト孔46は、他方の側板44のボルト孔
46よりも大径としてあり、大径のボルト孔46には、軟質
樹脂、ゴム等の弾性材料からなる抜け止めブッシュ（抜
け止め部材）47が嵌合固定されている。The side plates 44, 44 of the shaft holding portion 42 include the bottom plate 45.
Bolt holes 4 penetrating in the thickness direction at positions facing each other apart from and serving as support holes for cam bolts 7 described later.
6 and 46 are formed. In the illustrated universal joint 4,
The bolt holes 46 of one side plate 44 are the bolt holes of the other side plate 44.
The bolt hole 46 has a larger diameter than that of the bolt 46, and a retaining bush (retaining member) 47 made of an elastic material such as soft resin or rubber is fitted and fixed in the large diameter bolt hole 46.
【００２３】このような軸保持部42に保持されるコラム
軸５の軸端部は、軸保持部42の側板44，44間に受容可能
な幅を有する矩形断面を有しており、コラム軸５とヨー
ク40との結合は、図２（ａ）中に矢符により示す如く、
コラム軸５の軸端部をヨーク40の側板44，44間に開口側
から挿入し、この挿入の後、前記抜け止めブッシュ47を
備える側板44の外側から前記ボルト孔46，46にカムボル
ト７を通し、他方の側板44の外側に突出するカムボルト
７のねじ部に締め付けナット８を螺合して締め付けるこ
とにより、図２（ｂ）に示す如く実現されている。The shaft end portion of the column shaft 5 held by the shaft holding portion 42 has a rectangular cross section having a width receivable between the side plates 44 of the shaft holding portion 42. 5 and the yoke 40 are connected as shown by the arrow in FIG.
The shaft end of the column shaft 5 is inserted between the side plates 44, 44 of the yoke 40 from the opening side, and after this insertion, the cam bolt 7 is inserted into the bolt holes 46, 46 from the outside of the side plate 44 having the retaining bush 47. It is realized as shown in FIG. 2 (b) by passing through and tightening the tightening nut 8 by screwing the screw nut of the cam bolt 7 protruding to the outside of the other side plate 44.
【００２４】前記カムボルト７は、前述した挿通により
前記側板44，44間に位置する中途部に、本来の直径を長
径とする楕円形のカム部70を備えている。図３は、カム
部70の動作説明図であり、カムボルト７の挿通位置にお
ける軸保持部42の要部の横断面が示されている。前記側
板44，44間に挿通されたカムボルト７のカム部70は、一
方の側板44の外側からのカムボルト７の回転操作によ
り、これの軸心回りに回転し、図３（ａ）に示す回転位
置にあるとき、前記側板44，44間に挿入されたコラム軸
５の軸端部から離れて位置し、図３（ｂ）に示す回転位
置にあるとき、前記軸端部に当接し、更なる回転操作が
行われた場合、この当接部を白抜矢符にて示す向きに押
圧する作用をなす。The cam bolt 7 is provided with an elliptical cam portion 70 having an original diameter as a major diameter in a middle portion located between the side plates 44, 44 by the insertion described above. FIG. 3 is a diagram for explaining the operation of the cam portion 70, and shows a transverse cross section of the main part of the shaft holding portion 42 at the insertion position of the cam bolt 7. The cam portion 70 of the cam bolt 7 inserted between the side plates 44, 44 rotates about the axis of the cam bolt 7 by rotating the cam bolt 7 from the outside of one side plate 44, and the rotation shown in FIG. When it is in the position, it is located away from the shaft end of the column shaft 5 inserted between the side plates 44, and when it is in the rotational position shown in FIG. When such a rotating operation is performed, the contact portion is pressed in a direction indicated by an outline arrow.
【００２５】この押圧により前記コラム軸５の軸端部
は、軸保持部42の底板45内面に押し付けられ、該底板45
の内面と、前記カム部70のカム面との間に挾圧されて、
図の上下方向への変位不可に拘束され、更に、この状態
で行われる前記締め付けナット８の締め付けにより前記
側板44，44間に挾圧されて、図の左右方向への変位不可
に拘束されることとなり、高強度の結合状態が得られる
上、前記側板44，44及び底板45による３方向からの挾持
により、コラム軸５とヨーク40との間に高い同心性が確
保される。By this pressing, the shaft end portion of the column shaft 5 is pressed against the inner surface of the bottom plate 45 of the shaft holding portion 42, and the bottom plate 45.
Is pressed between the inner surface of the cam portion and the cam surface of the cam portion 70,
It is constrained so that it cannot be displaced in the vertical direction in the drawing, and is further clamped between the side plates 44, 44 by the tightening of the tightening nut 8 performed in this state, and is constrained so that it cannot be displaced in the horizontal direction in the drawing. This means that a high-strength connection state can be obtained, and since the side plates 44, 44 and the bottom plate 45 hold them in three directions, high concentricity is ensured between the column shaft 5 and the yoke 40.
【００２６】以上の如く構成された自在継手４，４を両
端に備える中間軸１の取付けに際しては、前述の如く、
コラム軸５及び入力軸６の軸端部に夫々の側の自在継手
４，４のヨーク40，40を仮止めし、両軸５，６間にて中
間軸１の位置調整を行う必要があるが、この仮止めは、
前述の如くコラム軸５の軸端部をヨーク40の側板44，44
間に挿入した後、これらの側板44，44に形成されたボル
ト孔46，46にカムボルト７を通して行われる。When mounting the intermediate shaft 1 having the universal joints 4 and 4 constructed as described above at both ends, as described above,
It is necessary to temporarily fix the yokes 40, 40 of the universal joints 4, 4 on the respective sides to the shaft ends of the column shaft 5 and the input shaft 6, and adjust the position of the intermediate shaft 1 between the shafts 5, 6. However, this temporary stop is
As described above, the shaft end portion of the column shaft 5 is attached to the side plates 44, 44 of the yoke 40.
After the insertion, the cam bolt 7 is inserted through the bolt holes 46, 46 formed in the side plates 44, 44.
【００２７】ここで、ヨーク40の一方の側板44に形成さ
れたボルト孔46には弾性材料製の抜け止めブッシュ47が
嵌着されており、この抜け止めブッシュ47は、前述した
仮止めのためにボルト孔46に通されたカムボルト７の周
面に弾接し、該カムボルト７の軸方向の移動及び軸回り
の回転に抵抗を加える作用をなす。これによりカムボル
ト７は、ボルト孔46，46から抜け出すことなく、またボ
ルト孔46，46内での回転位置を保って支持される。従っ
て、前記仮止めに際してカムボルト７を回転させ、前記
カム部70のカム作用が生じる回転位置を実現しておけ
ば、コラム軸５へのヨーク40の仮止めを簡易に、しかも
確実に行わせることができ、前述した中間軸１の位置調
整がコラム軸５からの抜け出しの虞れなく容易に行え、
この状態での締め付けナット８の締め付けにより、正規
の結合状態を確実に実現することが可能となる。Here, a retaining bush 47 made of an elastic material is fitted in a bolt hole 46 formed in one side plate 44 of the yoke 40, and the retaining bush 47 is used for the temporary fixing described above. It makes elastic contact with the peripheral surface of the cam bolt 7 which is passed through the bolt hole 46, and acts to add resistance to the axial movement and rotation of the cam bolt 7 about its axis. As a result, the cam bolt 7 is supported without coming out from the bolt holes 46, 46 and maintaining the rotational position in the bolt holes 46, 46. Therefore, if the cam bolt 7 is rotated at the time of the temporary fixing to realize the rotational position where the cam action of the cam portion 70 is generated, the temporary fixing of the yoke 40 to the column shaft 5 can be performed easily and surely. The position adjustment of the intermediate shaft 1 described above can be easily performed without the risk of slipping out of the column shaft 5,
By tightening the tightening nut 8 in this state, it is possible to surely realize the regular coupled state.
【００２８】なおこの実施の形態においては、ヨーク40
の側板44，44のうち、カムボルト７の頭部の側の側板44
に形成されたボルト孔46に抜け止めブッシュ47を嵌着し
た構成としてあるが、他方の側板44に形成されたボルト
孔46に抜け止めブッシュ47を嵌着してもよく、両方のボ
ルト孔46，46に抜け止めブッシュ47，47を嵌着してもよ
い。また、この実施の形態においては、コラム軸５の軸
端部に連結される自在継手４の構成について述べたが、
舵取機構の入力軸６の軸端部に連結される自在継手４に
おいても同様の構成となし得ることは言うまでもない。In this embodiment, the yoke 40
Of the side plates 44, 44 of the head side of the cam bolt 7
Although the retainer bush 47 is fitted in the bolt hole 46 formed in the bolt hole 46, the retainer bush 47 may be fitted in the bolt hole 46 formed in the other side plate 44. , 46 may be fitted with retaining bushes 47, 47. Further, in this embodiment, the configuration of the universal joint 4 connected to the shaft end portion of the column shaft 5 has been described.
It goes without saying that the universal joint 4 connected to the shaft end portion of the input shaft 6 of the steering mechanism can have a similar configuration.
【００２９】図４は、本発明の第２の実施の形態を示す
自在継手４のヨーク40とコラム軸５との結合構造の説明
図である。この図に示すヨーク40は、ピン受け部41及び
軸保持部42を備え、軸保持部42の側板44，44間に挿入さ
れたコラム軸５の軸端部を、前記側板44，44に形成され
たボルト孔46，46に通したカムボルト７と、該カムボル
ト７先端のねじ部に螺合する締め付けナット８とにより
挾圧固定する構成となっている。これらの各部の形状及
び構成は、図２に示すそれらと同様であり、対応する部
分に同一の参照符号を付して説明を省略し、以下には、
図２に示す第１の実施の形態と異なる点についてのみ説
明する。FIG. 4 is an explanatory view of the connecting structure of the yoke 40 and the column shaft 5 of the universal joint 4 showing the second embodiment of the present invention. The yoke 40 shown in this drawing includes a pin receiving portion 41 and a shaft holding portion 42, and the shaft end portion of the column shaft 5 inserted between the side plates 44, 44 of the shaft holding portion 42 is formed on the side plates 44, 44. The cam bolt 7 is inserted through the bolt holes 46, 46, and the tightening nut 8 is screwed into the threaded portion at the tip of the cam bolt 7, and is fixed by sandwiching. The shape and configuration of each of these parts are the same as those shown in FIG. 2, and corresponding parts are designated by the same reference numerals and description thereof will be omitted.
Only the points different from the first embodiment shown in FIG. 2 will be described.
【００３０】図４において、軸保持部42の側板44，44に
形成されたボルト孔46，46のうち、前記カムボルト７の
頭部が位置する側のボルト孔46は、他側のボルト孔46よ
りも大径としてあり、この大径のボルト孔46に嵌合する
カムボルト７のネック部外周には、ゴム、軟質樹脂等の
弾性材料からなる抜け止めリング（抜け止め部材）71が
一体に巻装されている。In FIG. 4, among the bolt holes 46, 46 formed in the side plates 44, 44 of the shaft holding portion 42, the bolt hole 46 on the side where the head of the cam bolt 7 is located is the bolt hole 46 on the other side. The cam bolt 7 has a larger diameter than that of the cam bolt 7, and a retaining ring (retaining member) 71 made of an elastic material such as rubber or soft resin is integrally wound around the outer periphery of the neck portion of the cam bolt 7 fitted in the large diameter bolt hole 46. It is equipped.
【００３１】このように構成された自在継手４，４を両
端に備える中間軸１の取付けに際して前述の如く行われ
る仮止めは、コラム軸５の軸端部をヨーク40の側板44，
44間に挿入した後、これらの側板44，44に形成されたボ
ルト孔46，46にカムボルト７を通して行われるが、この
とき、カムボルト７のネック部に巻装された抜け止めリ
ング71が、同側のボルト孔46の周面に弾接し、該ボルト
孔46に対するカムボルト７の軸方向の移動及び軸回りの
回転に抵抗を加える作用をなす。When the intermediate shaft 1 having the universal joints 4 and 4 constructed as described above at both ends is attached, the temporary fixing is performed as described above. The shaft end of the column shaft 5 is attached to the side plate 44 of the yoke 40.
After being inserted between 44, the cam bolt 7 is inserted through the bolt holes 46, 46 formed in the side plates 44, 44. At this time, the retaining ring 71 wound around the neck portion of the cam bolt 7 is the same. It makes elastic contact with the peripheral surface of the side bolt hole 46, and acts to add resistance to axial movement and rotation around the axis of the cam bolt 7 with respect to the bolt hole 46.
【００３２】従って、ボルト孔46，46にカムボルト７を
通して回転させ、前記カム部70のカム作用が生じる回転
位置を実現しておけば、該カムボルト７が、軸方向に抜
け出し、また軸回りに回転する虞れは殆どなく、コラム
軸５に対するヨーク40の仮止めを、簡易にしかも確実に
行わせることができ、この状態での中間軸１の位置調整
が容易となり、その後の締め付けナット８の締め付けに
より、正規の結合状態を確実に実現することが可能とな
る。Therefore, if the cam bolt 7 is rotated through the bolt holes 46, 46 to realize a rotation position where the cam action of the cam portion 70 is generated, the cam bolt 7 is axially pulled out and rotated around the axis. The yoke 40 can be temporarily fixed to the column shaft 5 easily and surely, and the position of the intermediate shaft 1 can be easily adjusted in this state, and the tightening nut 8 is tightened thereafter. As a result, it is possible to surely realize the regular combined state.
【００３３】図５は、本発明の第３の実施の形態を示す
自在継手４のヨーク40とコラム軸５との結合構造の説明
図である。この図に示すヨーク40は、ピン受け部41及び
軸保持部42を備え、軸保持部42の側板44，44間に挿入さ
れたコラム軸５の軸端部を、前記側板44，44に形成され
たボルト孔46，46に通した締め付けボルト7aと、該締め
付けボルト7a先端のねじ部に螺合するカムナット8aとに
より挾圧固定する構成となっている。FIG. 5 is an explanatory view of the connecting structure of the yoke 40 and the column shaft 5 of the universal joint 4 showing the third embodiment of the present invention. The yoke 40 shown in this drawing includes a pin receiving portion 41 and a shaft holding portion 42, and the shaft end portion of the column shaft 5 inserted between the side plates 44, 44 of the shaft holding portion 42 is formed on the side plates 44, 44. The tightening bolt 7a passed through the bolt holes 46, 46, and the cam nut 8a screwed to the screw portion at the tip of the tightening bolt 7a are configured to be sandwiched and fixed.
【００３４】図５において、軸保持部42の側板44，44に
形成されたボルト孔46，46のうち、前記カムナット8aが
位置する側のボルト孔46が他側のボルト孔46よりも大径
としてある。カムナット8aは、同側の大径のボルト孔46
に挿通可能なカム筒80を同軸的に備えており、該カム筒
80の基部近傍の外周には、ゴム、軟質樹脂等の弾性材料
からなる抜け止めリング81が一体に巻装されており、ま
た、ボルト孔46を経て側板44，44間に延びるカム筒80の
中途部には、本来の直径を長径とする楕円形のカム部82
が設けられている。In FIG. 5, among the bolt holes 46, 46 formed in the side plates 44, 44 of the shaft holding portion 42, the bolt hole 46 on the side where the cam nut 8a is located has a larger diameter than the bolt hole 46 on the other side. There is. The cam nut 8a has a large-diameter bolt hole 46 on the same side.
A cam cylinder 80 that can be inserted into the cam cylinder is coaxially provided.
A retaining ring 81 made of an elastic material such as rubber or soft resin is integrally wound around the outer periphery of the base portion of 80, and a cam cylinder 80 extending between the side plates 44, 44 via a bolt hole 46 is provided. An elliptical cam part 82 with the original diameter as the major axis is provided in the middle part.
Is provided.
【００３５】このように構成された自在継手４，４を両
端に備える中間軸１の取付けに際して前述の如く行われ
る仮止めは、コラム軸５の軸端部をヨーク40の側板44，
44間に挿入した後、一方の側板44に形成された大径のボ
ルト孔46にカムナット8aのカム筒80を通して行われる。
このとき、カム筒80の基部に巻装された抜け止めリング
81が同側のボルト孔46の周面に弾接し、該ボルト孔46に
対するカム筒80の軸方向の移動及び軸回りの回転に抵抗
を加える作用をなす。When the intermediate shaft 1 having the universal joints 4 and 4 constructed as described above at both ends is attached, the temporary fixing is performed as described above. The shaft end of the column shaft 5 is attached to the side plate 44 of the yoke 40.
After being inserted between 44, the cam cylinder 80 of the cam nut 8a is inserted into the large-diameter bolt hole 46 formed in the one side plate 44.
At this time, the retaining ring wound around the base of the cam barrel 80.
81 makes elastic contact with the peripheral surface of the bolt hole 46 on the same side, and acts to add resistance to axial movement and rotation around the axis of the cam cylinder 80 with respect to the bolt hole 46.
【００３６】従って、前記ボルト孔46にカム筒80を通し
て回転させ、前記カム部82のカム作用が生じる回転位置
を実現しておけば、該カム筒80が、軸方向に抜け出し、
また軸回りに回転する虞れは殆どなく、コラム軸５に対
するヨーク40の仮止めを、簡易にしかも確実に行わせる
ことができ、この状態での中間軸１の位置調整が容易と
なり、その後に他側の側板44から通した締め付けボルト
7aをカムナット8aに締め付けることにより、正規の結合
状態を確実に実現することができる。Therefore, if the cam cylinder 80 is rotated through the bolt hole 46 to realize a rotation position where the cam action of the cam portion 82 is generated, the cam cylinder 80 is axially pulled out,
Further, there is almost no possibility of rotation around the axis, and the yoke 40 can be temporarily fixed to the column shaft 5 easily and reliably, and the position adjustment of the intermediate shaft 1 in this state becomes easy. Tightening bolt passed from the side plate 44 on the other side
By tightening the 7a to the cam nut 8a, it is possible to surely realize the regular coupling state.
【００３７】図６は、第３の実施の形態におけるヨーク
40とコラム軸５の軸端部の結合状態を示す横断面図であ
る。本図に示す如く、ヨーク40の軸保持部42の側板44，
44間に挿入された矩形断面を有するコラム軸５の軸端部
は、一側のボルト孔46に通されたカム筒80をカムナット
8aの操作により回転させることにより、該カム筒80の中
途に設けられたカム部82により白抜矢符にて示す向きに
押され、該カム部82と軸保持部42の底板45との間に挾圧
され、また、この状態で行われる締め付けボルト7aの締
め付けにより前記側板44，44間に挾圧される。この結
果、コラム軸５とヨーク40とは、高い同心性を有して高
強度に結合される。FIG. 6 shows a yoke according to the third embodiment.
FIG. 10 is a transverse cross-sectional view showing a combined state of 40 and the shaft end portion of the column shaft 5. As shown in the figure, the side plate 44 of the shaft holding portion 42 of the yoke 40,
The shaft end portion of the column shaft 5 having a rectangular cross section inserted between the 44 has a cam nut 80, which is inserted through the bolt hole 46 on one side, in a cam nut.
By being rotated by the operation of 8a, it is pushed in the direction shown by the white arrow by the cam portion 82 provided in the middle of the cam cylinder 80, and between the cam portion 82 and the bottom plate 45 of the shaft holding portion 42. And is clamped between the side plates 44, 44 by tightening the tightening bolt 7a in this state. As a result, the column shaft 5 and the yoke 40 have a high concentricity and a high strength.
【００３８】なおこの実施の形態においても、第１の実
施の形態に示す如く、一方の側板44の大径のボルト孔46
に弾性材料製のブッシュを嵌着し、このブッシュがカム
ナット8aとの間に介在する構成としてもよいことは言う
までもない。Also in this embodiment, as shown in the first embodiment, the large diameter bolt hole 46 of one side plate 44 is used.
It is needless to say that a bush made of an elastic material may be fitted to and the bush may be interposed between the bush and the cam nut 8a.
【００３９】[0039]
【発明の効果】以上詳述した如く本発明に係る自在継手
においては、ヨークの底板との間に軸端部を挾圧するカ
ム体が、これの支持孔との間に介装された抜け止め部材
の弾接により、軸方向の移動及び軸回りの回転を拘束し
て支持されるから、対象となる軸へのヨークの仮止めを
簡易に、しかも確実に行わせることが可能となり、正規
の結合状態を容易に実現することができ、また前記カム
体を側板の締め付けのためのボルト又はナットの一部に
形成したから、部品点数の削減を図ることができる。As described above in detail, in the universal joint according to the present invention, the cam body for pressing the shaft end portion with the bottom plate of the yoke is interposed between the cam body and the supporting hole to prevent the cam body from coming off. By elastically contacting the members, the movement in the axial direction and the rotation around the axis are restrained and supported, so that it becomes possible to temporarily and easily fix the yoke to the target shaft easily and reliably. The coupled state can be easily realized, and the number of parts can be reduced because the cam body is formed on a part of a bolt or a nut for tightening the side plate.
【００４０】また本発明に係る操舵装置においては、操
舵に応じて回転するコラム軸と舵取機構への入力軸との
連結に本発明に係る自在継手を用いたから、各別に位置
決めされたコラム軸と入力軸とを簡易に、しかも確実に
連結することができ、組立工数の削減に寄与することが
可能となる等、本発明は優れた効果を奏する。Further, in the steering apparatus according to the present invention, since the universal joint according to the present invention is used for connecting the column shaft that rotates in response to steering and the input shaft to the steering mechanism, the column shafts that are individually positioned The present invention has excellent effects such that the input shaft and the input shaft can be connected easily and surely, and the number of assembling steps can be reduced.
【図１】本発明に係る自在継手の側面図である。FIG. 1 is a side view of a universal joint according to the present invention.
【図２】本発明の第１の実施の形態を示す自在継手のヨ
ークとコラム軸との結合構造の説明図である。FIG. 2 is an explanatory diagram of a coupling structure between a yoke and a column shaft of the universal joint according to the first embodiment of the present invention.
【図３】カム部の動作説明図である。FIG. 3 is an operation explanatory diagram of a cam portion.
【図４】本発明の第２の実施の形態を示す自在継手のヨ
ークとコラム軸との結合構造の説明図である。FIG. 4 is an explanatory view of a coupling structure of a yoke and a column shaft of a universal joint according to a second embodiment of the present invention.
【図５】本発明の第３の実施の形態を示す自在継手のヨ
ークとコラム軸との結合構造の説明図である。FIG. 5 is an explanatory diagram of a coupling structure of a yoke and a column shaft of a universal joint according to a third embodiment of the present invention.
【図６】第３の実施の形態におけるヨークとコラム軸の
軸端部の結合状態を示す横断面図である。FIG. 6 is a transverse cross-sectional view showing a coupled state of a yoke and a shaft end portion of a column shaft according to a third embodiment.
【図７】コラム軸と入力軸との連結に用いる中間軸の側
面図である。FIG. 7 is a side view of an intermediate shaft used for connecting a column shaft and an input shaft.
【図８】図７に示す中間軸に備えられた自在継手のヨー
クとコラム軸との結合構造の説明図である。8 is an explanatory view of a coupling structure of a yoke and a column shaft of a universal joint provided on the intermediate shaft shown in FIG.
１ 中間軸 ２ 軸本体 ４ 自在継手 ５ コラム軸 ６ 入力軸 ７ カムボルト（カム体） 8a カムナット（カム体） 40 ヨーク 42 軸保持部 44 側板 45 底板 46 ボルト孔（支持孔） 47 抜け止めブッシュ（抜け止め部材） 70 カム部 71 抜け止めリング（抜け止め部材） 80 カム筒 81 抜け止めリング（抜け止め部材） 82 カム部 1 Intermediate axis 2-axis body 4 universal joints 5 column axis 6 input shaft 7 Cam bolt (cam body) 8a Cam nut (cam body) 40 York 42 Shaft holding part 44 Side plate 45 Bottom plate 46 Bolt hole (support hole) 47 Lock Bush (Lock Member) 70 Cam section 71 Lock ring (Lock member) 80 cam barrel 81 Lock ring (Lock member) 82 Cam section
───────────────────────────────────────────────────── フロントページの続き (72)発明者 今垣 進 大阪府大阪市中央区南船場三丁目５番８号 光洋精工株式会社内 (72)発明者 小谷 博憲 大阪府大阪市中央区南船場三丁目５番８号 光洋精工株式会社内 Ｆターム(参考） 3D030 DC40 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Susumu Imagaki 3-5-8 Minamisenba, Chuo-ku, Osaka-shi, Osaka Koyo Seiko Co., Ltd. (72) Inventor Hironori Otani 3-5-8 Minamisenba, Chuo-ku, Osaka-shi, Osaka Koyo Seiko Co., Ltd. F term (reference) 3D030 DC40
Claims (4)
なるＵ字形断面の軸保持部を備え、前記側板間に挿入さ
れた軸の端部を、両側板の対応位置を貫通する支持孔に
挿通支持されたカム体と、前記底板との間に挾圧固定す
る構成とした自在継手において、 前記カム体と前記支持孔との間に介装された弾性材料製
の抜け止め部材を備えることを特徴とする自在継手。1. A shaft holding portion having a U-shaped cross section formed by connecting two side plates to each other by a bottom plate, and an end portion of a shaft inserted between the side plates penetrates corresponding positions of both side plates. A universal joint having a structure in which a cam body inserted and supported in a support hole and the bottom plate are sandwiched and fixed, wherein a retaining member made of an elastic material is interposed between the cam body and the support hole. A universal joint comprising:
２枚の側板を締め付けるボルトの一部に一体形成してあ
る請求項１記載の自在継手。2. The universal joint according to claim 1, wherein the cam body is integrally formed with a part of a bolt for tightening the two side plates to press the shaft end portion.
２枚の側板を締め付けるナットの一部に一体形成してあ
る請求項１記載の自在継手。3. The universal joint according to claim 1, wherein the cam body is integrally formed with a part of a nut for tightening the two side plates to press the shaft end portion.
構の入力軸との連結部に、請求項１乃至請求項３のいず
れかに記載の自在継手を備えることを特徴とする操舵装
置。4. A steering apparatus comprising the universal joint according to claim 1 at a connecting portion between a column shaft that rotates in response to steering and an input shaft of a steering mechanism. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002043941A JP2003240010A (en) | 2002-02-20 | 2002-02-20 | Universal joint and steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002043941A JP2003240010A (en) | 2002-02-20 | 2002-02-20 | Universal joint and steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003240010A true JP2003240010A (en) | 2003-08-27 |
Family
ID=27783533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002043941A Pending JP2003240010A (en) | 2002-02-20 | 2002-02-20 | Universal joint and steering device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003240010A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008290702A (en) * | 2007-04-27 | 2008-12-04 | Nsk Ltd | Steering device |
| CN102407880A (en) * | 2010-08-31 | 2012-04-11 | 株式会社捷太格特 | Combination structure of shaft and universal-joint fork of universal joint and vehicle steering device |
| CN114802412A (en) * | 2022-04-18 | 2022-07-29 | 岚图汽车科技有限公司 | Connection structure of steering column and steering gear input shaft and vehicle |
-
2002
- 2002-02-20 JP JP2002043941A patent/JP2003240010A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008290702A (en) * | 2007-04-27 | 2008-12-04 | Nsk Ltd | Steering device |
| CN102407880A (en) * | 2010-08-31 | 2012-04-11 | 株式会社捷太格特 | Combination structure of shaft and universal-joint fork of universal joint and vehicle steering device |
| CN102407880B (en) * | 2010-08-31 | 2014-06-25 | 株式会社捷太格特 | Combination structure of shaft and universal-joint fork of universal joint and vehicle steering device |
| CN114802412A (en) * | 2022-04-18 | 2022-07-29 | 岚图汽车科技有限公司 | Connection structure of steering column and steering gear input shaft and vehicle |
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