JPH1182530A - Spline coupling structure - Google Patents
Spline coupling structureInfo
- Publication number
- JPH1182530A JPH1182530A JP25010997A JP25010997A JPH1182530A JP H1182530 A JPH1182530 A JP H1182530A JP 25010997 A JP25010997 A JP 25010997A JP 25010997 A JP25010997 A JP 25010997A JP H1182530 A JPH1182530 A JP H1182530A
- Authority
- JP
- Japan
- Prior art keywords
- spline
- shaft
- shaft member
- pipe member
- pipe
- 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、例えば、車両用ス
テアリング装置に適用されるスプライン結合構造に関す
る。The present invention relates to a spline coupling structure applied to, for example, a vehicle steering system.
【０００２】[0002]
【従来の技術】図１４、図１５に、従来のスプライン結
合構造を示す（以下「従来例１」という）。2. Description of the Related Art FIGS. 14 and 15 show a conventional spline connection structure (hereinafter referred to as "conventional example 1").
【０００３】この従来例１は、軸部材１１０先端側の外
周面に形成した外スプライン１１１を、パイプ部材１２
０先端側の内周面に形成した内スプライン１２１に挿着
し、軸部材１１０とパイプ部材１２０とを軸方向相対移
動可能かつ周方向相対回転不能にスプライン結合するも
のである。このとき、パイプ部材１２０の先端部に設け
た環状溝１２２にシール部材１３０を取り付け、その内
周面１３１により、軸部材１１０側の外スプライン１１
１を締め付ける。これにより、スプライン結合部のシー
ルを行うとともに、軸部材１１０側の外スプライン１１
１とパイプ部材１２０側の内スプライン１２１との間の
ガタ、特に長期使用に伴う摩耗によるガタをなくすよう
にしている。なお、図１５に示すように、シール部材１
３０の内周面１３１を、軸部材１１０外周面のうちの外
スプライン１１１が形成されていない部分１１２に嵌合
するようにしてもよい。In the prior art 1, an outer spline 111 formed on an outer peripheral surface at a tip end side of a shaft member 110 is connected to a pipe member 12.
0 The spline 121 is inserted into the inner spline 121 formed on the inner peripheral surface on the distal end side, and the shaft member 110 and the pipe member 120 are spline-coupled so as to be relatively movable in the axial direction and not to rotate in the circumferential direction. At this time, the seal member 130 is attached to the annular groove 122 provided at the distal end of the pipe member 120, and the outer spline 11 on the shaft member 110 side is formed by the inner peripheral surface 131.
Tighten 1. As a result, the spline joint portion is sealed, and the outer spline 11 on the shaft member 110 side is sealed.
A play between the inner spline 121 and the inner spline 121 on the pipe member 120 side, particularly, a play due to wear due to long-term use is eliminated. In addition, as shown in FIG.
The inner peripheral surface 131 of the shaft 30 may be fitted to a portion 112 of the outer peripheral surface of the shaft member 110 where the outer spline 111 is not formed.
【０００４】図１６に、他の従来のスプライン結合構造
を示す（以下「従来例２」という。FIG. 16 shows another conventional spline coupling structure (hereinafter, referred to as “conventional example 2”).
【０００５】この従来例２は、実公昭６３−１７８６２
号公報に開示されているものであり、パイプ部材（公報
中の記載では「パイプ」）４内側の内スプライン（同じ
く「第２スプライン歯」）４ａに、軸部材２外側の外ス
プライン（同じく「第１スプライン歯」）２ａを挿入し
て両者をスプライン結合するものであり、パイプ部材４
の先端部に、その周方向を４等分する位置のそれぞれ
に、軸方向の沿ったスリット４ｂ、４ｂ…を計４本形成
している。そして、パイプ部材４に対する軸部材２の挿
入後に、パイプ部材４先端を緊締部材６によって締め付
ける。パイプ部材４先端は、スリット４ｂが形成されて
いるので、締付けにより内側に変形し、これにより、外
スプライン２ａと、内スプライン４ａとの間のガタがな
くなる。The prior art 2 is disclosed in Japanese Utility Model Publication No. 63-17762.
The inner spline (also the “second spline tooth”) 4a inside the pipe member (“pipe” in the description of the publication) 4 is attached to the outer spline (also “the same”) outside the shaft member 2. First spline teeth ") 2a are inserted to connect the two splines, and the pipe member 4
A total of four slits 4b, 4b,... Along the axial direction are formed at each of the positions at which the circumferential direction is divided into four equal parts. After the shaft member 2 is inserted into the pipe member 4, the tip of the pipe member 4 is tightened by the tightening member 6. Since the slit 4b is formed at the tip of the pipe member 4, the tip of the pipe member 4 is deformed inward by tightening, so that there is no backlash between the outer spline 2a and the inner spline 4a.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上述の
従来例１及び従来例２によると、それぞれシール部材１
３０、緊締部材６によってガタがなくなり、それぞれ軸
部材１１０、２に対する回転方向の力（トルク）に対し
ては有効に作用するものの、軸部材１１０、２に対する
曲げ方向の力（図中のＦ）に対して有効ではないという
問題があった。However, according to the above-mentioned prior art examples 1 and 2, each of the seal members 1
30, the backlash is eliminated by the tightening member 6, and although it effectively acts on the rotational force (torque) on the shaft members 110 and 2, respectively, the force in the bending direction on the shaft members 110 and 2 (F in the figure) There is a problem that is not effective for.
【０００７】すなわち、軸部材１１０、２は、シール部
材１３０、緊締部材６によって締め付けられた部分（以
下「緊締部位」という）においては、パイプ部材１２
０、４との間のガタはなくなるものの、先端部における
ガタはなくならず、軸部材１１０、２に対して曲げ方向
の力Ｆが作用すると、これら軸部材１１０、２は緊締部
位を中心にして先端部がガタつくという問題である。That is, the shaft members 110 and 2 are connected to the pipe member 12 at a portion tightened by the seal member 130 and the tightening member 6 (hereinafter referred to as a “tightening portion”).
Although there is no backlash between 0 and 4, the backlash at the distal end does not disappear, and when a force F in the bending direction acts on the shaft members 110 and 2, these shaft members 110 and 2 center around the tightened portion. The problem is that the tip is loose.
【０００８】例えば、従来例１又は従来例２のスプライ
ン係合構造が自動車等のステアリング装置に適用されて
いる場合、上述の軸部材１１０、２先端部のガタにより
次のような不具合が発生する。悪路走行等によって自動
車の車体が振動した場合、軸部材１１０、２はその自重
によって先端部が振られて振動し、パイプ部材１２０、
４の内側に当たって異音（打音）及びショックを発生さ
せる。このショックはハンドルホイールに伝達され、異
音とともに、運転者に不快感を感じさせることになる。For example, when the spline engagement structure of the conventional example 1 or the conventional example 2 is applied to a steering device of an automobile or the like, the following inconvenience occurs due to the above-mentioned play of the shaft member 110 and the front end of the shaft member 2. . When the body of the automobile vibrates due to rough road running or the like, the shaft members 110 and 2 are vibrated by virtue of their own weight being shaken at the tip end, and the pipe members 120 and
4, an abnormal sound (hitting sound) and a shock are generated. This shock is transmitted to the handle wheel and, together with the abnormal noise, makes the driver feel uncomfortable.
【０００９】そこで、本発明は、軸部材に曲げ方向の力
が作用した場合においても、軸部材がパイプ部材との間
でガタつくことのないようにしたスプライン係合構造を
提供することを目的とするものである。Accordingly, an object of the present invention is to provide a spline engagement structure in which the shaft member does not rattle with the pipe member even when a force in the bending direction acts on the shaft member. It is assumed that.
【００１０】[0010]
【課題を解決するための手段】上述目的を達成するため
の、請求項１に係る本発明は、先端部の外周面に外スプ
ラインが形成された軸部材を、先端部の内周面に内スプ
ラインが形成されたパイプ部材に挿入して嵌合させるス
プライン結合構造において、前記外スプラインと前記内
スプラインとの間の間隙をなくすための第１の緊締部
を、前記外スプラインの基端側に位置する前記内スプラ
インの先端部近傍に設け、前記外スプラインと前記内ス
プラインとの間の間隙をなくすための第２の緊締部を、
前記内スプラインの基端側に位置する前記外スプライン
の先端部近傍に設け、前記第２の緊締部は、前記軸部材
の先端部外周面に形成された環状溝と、該環状溝に係合
されるとともに、前記パイプ部材に対する前記軸部材の
挿入時には前記パイプ部材の内径よりも小さく圧縮さ
れ、また前記パイプ部材に対する前記軸部材の挿入後に
は拡開しようとする弾性力により前記軸部材の先端部近
傍の外スプラインを前記パイプ部材の内スプラインに押
圧する弾性部材と、を有する、ことを特徴とする。According to a first aspect of the present invention, there is provided a shaft member having an outer spline formed on an outer peripheral surface of a tip, and an inner shaft formed on an inner peripheral surface of the tip. In a spline coupling structure that is inserted and fitted into a pipe member having a spline formed therein, a first tightening portion for eliminating a gap between the outer spline and the inner spline is provided at a base end side of the outer spline. A second tightening portion that is provided near the tip of the inner spline and that eliminates a gap between the outer spline and the inner spline;
The second tightening portion is provided in the vicinity of the distal end of the outer spline located on the base end side of the inner spline, and is engaged with the annular groove formed on the outer peripheral surface of the distal end of the shaft member. When the shaft member is inserted into the pipe member, the shaft member is compressed to be smaller than the inner diameter of the pipe member, and after the shaft member is inserted into the pipe member, the distal end of the shaft member is elastically expanded. And an elastic member for pressing an outer spline in the vicinity of the portion against an inner spline of the pipe member.
【００１１】上述の請求項１の発明によると、軸部材の
外スプラインの基端側に第１の緊締部を設け、外スプラ
インの先端部近傍に第２の緊締部を設けた、すなわち、
外スプラインにおける軸方向のそれぞれ異なる位置に、
第１の緊締部と第２の緊締部を設け、これらによってパ
イプ部材の内スプラインと軸部材の外スプラインとの間
の間隙（ガタ）をなくすようにしているので、軸部材に
回転方向の力が作用したときのガタをなくすことができ
るのはもちろん、軸部材に曲げ方向の力が作用したとき
のガタもなくすることができる。他の言い方をすると、
軸部材は、外スプラインにおける軸方向の異なる２箇所
で、それぞれ第１、第２の緊締部材によりその動きが拘
束されているので、回転方向の力、曲げ方向の力に対し
ては、パイプ部材に対する動きの自由度はない。According to the first aspect of the present invention, the first tightening portion is provided at the base end side of the outer spline of the shaft member, and the second tightening portion is provided near the distal end of the outer spline.
At different positions in the axial direction on the outer spline,
The first tightening portion and the second tightening portion are provided to eliminate a gap (play) between the inner spline of the pipe member and the outer spline of the shaft member. Not only can play be eliminated when the force acts on the shaft member, but also play when the force in the bending direction acts on the shaft member can be eliminated. In other words,
Since the movement of the shaft member is restricted by the first and second tightening members at two different positions in the axial direction of the outer spline, respectively, the pipe member is not subjected to the rotational direction force and the bending direction force. There is no freedom of movement for.
【００１２】なお、第１、第２の緊締部による締付け力
が強過ぎる場合には、パイプ部材に対する軸部材の軸方
向の移動が規制されるおそれがあるので、上述の締付け
力は、ガタをなくし、かつ軸方向に円滑な動きを可能と
する必要最小限に設定するとよい。If the tightening force of the first and second tightening portions is too strong, the movement of the shaft member in the axial direction with respect to the pipe member may be restricted. It is preferable to set the distance to the minimum necessary for eliminating the movement and enabling smooth movement in the axial direction.
【００１３】なお、本発明においては、第１の緊締部の
具体的な構成については、特に限定されるものではな
く、従来例１、２に示すものや、他の任意のものであっ
てもよい。本発明の特徴部分が、軸方向の異なる２箇所
に緊締部を設けた点と、第２の緊締部として上述の環状
溝及び弾性部材を有する点とにあるからである。In the present invention, the specific structure of the first tightening portion is not particularly limited, and may be any of those shown in Conventional Examples 1 and 2 and other arbitrary ones. Good. This is because the characteristic portions of the present invention are that the tightening portions are provided at two different positions in the axial direction and that the second tightening portion has the above-described annular groove and the elastic member.
【００１４】[0014]
【発明の実施の形態】以下、図面に沿って、本発明の実
施の形態について説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１５】〈実施の形態１〉図１、図２、図３に、本
発明に係るスプライン結合構造を示す。なお、図１は軸
心を含む縦断面図、また図２は図１のＡ−Ａ線矢視図、
さらに図３は弾性部材の単品図である。First Embodiment FIGS. 1, 2 and 3 show a spline connection structure according to the present invention. 1 is a longitudinal sectional view including the axis, FIG. 2 is a view taken along line AA of FIG. 1,
FIG. 3 is a single item diagram of the elastic member.
【００１６】図１に示すスプライン結合構造は、軸部材
１０と、パイプ部材２０と、第１の緊締部３０と、第２
の緊締部４０とを主要構成部として構成されている。The spline coupling structure shown in FIG. 1 has a shaft member 10, a pipe member 20, a first tightening portion 30, and a second
And the tightening portion 40 are configured as main components.
【００１７】軸部材１０は、先端部（同図のおける右側
部分）の外周面に外スプライン１１が形成されている。
この外スプライン１１のさらに先端側には、後述の弾性
部材４１が係合される環状溝１２が形成されている。な
お、軸部材１０の基端部（同図における左側部分）は、
第１の十字軸自在継手５１を介してステアリングギヤ５
２に接続されている。The shaft member 10 has an outer spline 11 formed on an outer peripheral surface of a tip portion (right side portion in the figure).
An annular groove 12 with which an elastic member 41 to be described later is engaged is formed on a further end side of the outer spline 11. In addition, the base end part (left part in the figure) of the shaft member 10 is
Steering gear 5 via first cross shaft universal joint 51
2 are connected.
【００１８】パイプ部材２０は、先端部（同図における
左側部分）の内周面に内スプライン２１が形成されてい
る。内スプライン２１における先端側には、軸部材１０
の軸心に沿った方向の４本のスリット２２、２２…が形
成されている。各スリット２２は、パイプ部材２０の先
端を周方向に４等分する位置に形成されており、その長
さは、内スプライン２１のほぼ半分の長さに設定されて
いる。また、パイプ部材２０の先端近傍の外周面には、
後述の緊締部材を嵌めるための環状の凹部２３が形成さ
れている。パイプ部材２０は、基端部（同図における右
側部分）に、その内径ｄ１が内スプライン２１の大径部
の直径よりも大きく設定された拡管部２４を有する。な
お、拡管部２４の基端部は、第２の十字軸自在継手５３
を介して、ステアリングコラム５４により回転自在に支
持されているステアリングシャフト５５に接続されてい
る。The pipe member 20 has an inner spline 21 formed on the inner peripheral surface at the tip (the left side in the figure). On the tip side of the inner spline 21, the shaft member 10
Are formed in the direction along the center of the axis. Each slit 22 is formed at a position that divides the tip of the pipe member 20 into four equal parts in the circumferential direction, and the length thereof is set to approximately half the length of the inner spline 21. Also, on the outer peripheral surface near the tip of the pipe member 20,
An annular concave portion 23 for fitting a tightening member described later is formed. The pipe member 20 has, at its base end (right side in the figure), an expanded portion 24 whose inner diameter d1 is set to be larger than the diameter of the large diameter portion of the inner spline 21. In addition, the base end of the expanded portion 24 is connected to the second cross shaft universal joint 53.
Is connected to a steering shaft 55 rotatably supported by a steering column 54.
【００１９】上述の軸部材１０は、パイプ部材２０の内
側に先端側から挿入され、その外スプライン１１をほぼ
全長にわたって、パイプ部材２０の内スプライン２１に
スプライン結合させている。したがって、軸部材１０
は、パイプ部材２０に対して、周方向相対回転不能（回
転不能）かつ軸方向相対移動可能（摺動可能）となって
いる。すなわち、ステアリングシャフト５５が回転する
と、この回転は、順に、第２の十字軸自在継手５３、パ
イプ部材２０、軸部材１０、そして、第１の十字軸自在
継手５１を介して、ステアリングギヤ５２に伝達され
る。このとき、軸部材１０は、パイプ部材２０の対して
相対回転が禁止されるとともに、軸方向の移動は許容さ
れる。The above-mentioned shaft member 10 is inserted into the inside of the pipe member 20 from the front end side, and the outer spline 11 is spline-coupled to the inner spline 21 of the pipe member 20 over substantially the entire length. Therefore, the shaft member 10
Is not rotatable relative to the pipe member 20 in the circumferential direction (not rotatable) and is relatively movable in the axial direction (slidable). That is, when the steering shaft 55 rotates, the rotation is sequentially transmitted to the steering gear 52 via the second cross shaft universal joint 53, the pipe member 20, the shaft member 10, and the first cross shaft universal joint 51. Is transmitted. At this time, relative rotation of the shaft member 10 with respect to the pipe member 20 is prohibited, and movement in the axial direction is allowed.
【００２０】第１の緊締部３０は、上述のパイプ部材２
０の先端部、スリット２２、２２…、凹部２３等と、緊
締部材３１とによって構成されている。緊締部材３１
は、例えば、弾性を有する環状の部材によって形成され
ており、上述の環状の凹部２３に装着されてパイプ部材
２０の先端部近傍を内側に締め付けている。この締付け
により、スリット２２、２２…が形成されている先端部
は、内側に変形し、この変形により、軸部材１０側の外
スプライン１１における基端側と、パイプ部材２０側の
内スプライン２１のおける先端部近傍との間のガタ（間
隙）がなくなる。The first tightening portion 30 is provided with the above-described pipe member 2.
., A concave portion 23, and the like, and a tightening member 31. Tightening member 31
Is formed of, for example, an annular member having elasticity, and is attached to the above-described annular recessed portion 23 to fasten the vicinity of the distal end of the pipe member 20 to the inside. Due to this tightening, the distal end portion in which the slits 22 are formed is deformed inward. Due to this deformation, the base end side of the outer spline 11 on the shaft member 10 side and the inner spline 21 on the pipe member 20 side are deformed. There is no play (gap) between the vicinity of the leading end portion.
【００２１】第２の緊締部４０は、上述の軸部材１０先
端の環状溝１２とこれに係合された弾性部材とによって
構成されている。弾性部材としては、本実施の形態１に
おいては、図３に示すように、ほぼ環状に形成された線
ばね４１が使用されている。同図に示す線ばね４１は、
円形部４１ａと、その相互に交差する始端部４１ｂ及び
終端部４１ｃとを有し、図３における自然状態での円形
部４１ａの半径がＲ１に、また始端部４１ｂ及び終端部
４１ｃの半径がＲ２に設定されている。この円形部４１
ａの半径Ｒ１は、上述のパイプ部材２０の内スプライン
２１の小径部の半径よりも小さく設定されており、また
始端部４１ｂ及び終端部４１ｃの半径Ｒ２は、上述のパ
イプ部材２０の拡管部２４の半径（ｄ１ ／２）よりも
大きく設定されている。このため、パイプ部材２０に対
して軸部材１０を挿入する際には、まず、軸部材１０の
環状溝１２に装着した線ばね４１の始端部４１ｂ及び終
端部４１ｃを内側に押し縮めるようにして、軸部材１０
の先端部をパイプ部材２０の先端部に挿入し、次に、こ
の押し縮めた状態のまま、線ばね４１が拡管部２４に到
達するまで軸部材１０を押し込む。すると、始端部４１
ｂ及び終端部４１ｃが外側に開いて、図２に示すように
拡管部２４をほぼ上方に向けて押す。これにより、軸部
材１０の先端部が下方に付勢され、外スプライン１１の
先端部がパイプ部材２０側の内スプライン２１の基端側
に押圧され、両者のガタがなくなる。なお、線ばね４１
は、始端部４１ｂ及び終端部４１ｃが、パイプ部材２０
の拡管部２４に当接することにより、軸部材１０の抜止
めとしても作用する。The second tightening portion 40 is constituted by the annular groove 12 at the tip of the shaft member 10 and an elastic member engaged with the annular groove. As the elastic member, in the first embodiment, as shown in FIG. 3, a wire spring 41 formed in a substantially annular shape is used. The wire spring 41 shown in FIG.
The circular portion 41a has a starting end 41b and a terminating end 41c that intersect each other. The radius of the circular portion 41a in the natural state in FIG. 3 is R1, and the radius of the starting end 41b and the terminating end 41c is R2. Is set to This circular part 41
a is set smaller than the radius of the small diameter portion of the inner spline 21 of the pipe member 20, and the radius R2 of the starting end 41b and the ending portion 41c is set to be larger than the expanding portion 24 of the pipe member 20. Is set to be larger than the radius (d1 / 2). For this reason, when inserting the shaft member 10 into the pipe member 20, first, the start end 41b and the end 41c of the wire spring 41 attached to the annular groove 12 of the shaft member 10 are compressed inward. , Shaft member 10
Is inserted into the distal end of the pipe member 20, and then the shaft member 10 is pushed in the compressed state until the wire spring 41 reaches the expanded portion 24. Then, the starting end 41
b and the end portion 41c open outward, and push the expanded tube portion 24 substantially upward as shown in FIG. As a result, the distal end of the shaft member 10 is urged downward, and the distal end of the outer spline 11 is pressed toward the base end of the inner spline 21 on the pipe member 20 side, so that there is no play between the two. The wire spring 41
The start end 41b and the end 41c are connected to the pipe member 20.
Of the shaft member 10 by contacting the expanded tube portion 24.
【００２２】上述のように、軸部材１０とパイプ部材２
０とは、外スプライン１１の基端側と内スプライン２１
の先端部との間のガタが第１の緊締部３０によって、ま
た、外スプライン１１の先端部と内スプライン２１の基
端側との間のガタが第２の緊締部４０によってそれぞれ
なくなるので、軸部材１０は、回転方向の力が作用した
場合はもちろん、曲げ方向の力が作用した場合も、ガタ
つくことはない。As described above, the shaft member 10 and the pipe member 2
0 is the proximal end of the outer spline 11 and the inner spline 21
The first tightening portion 30 eliminates the play between the distal end of the outer spline 11 and the second tightening portion 40 between the distal end of the outer spline 11 and the proximal end of the inner spline 21. The shaft member 10 does not rattle not only when a force in the rotating direction acts but also when a force in the bending direction acts.
【００２３】したがって、上述の実施の形態１の場合の
ように、スプライン係合構造が自動車等のステアリング
装置に適用されている場合、上述の軸部材１０先端部の
ガタにより発生する前述の異音（打音）やショックの発
生を防止することができ、運転者に不快感を感じさせる
ことはない。Therefore, when the spline engagement structure is applied to a steering device such as an automobile, as in the case of the first embodiment, the above-described abnormal noise generated by the backlash at the end of the shaft member 10 described above. (Hitting sound) and occurrence of a shock can be prevented, and the driver does not feel discomfort.
【００２４】〈実施の形態２〉図４、図５、図６に、実
施の形態２のスプライン結合構造を示す。なお、図４は
軸心を含む縦断面図、また図５は図４のＢ−Ｂ線矢視
図、さらに図６は弾性部材の単品図である。Second Embodiment FIGS. 4, 5, and 6 show a spline connection structure according to a second embodiment. 4 is a longitudinal sectional view including the axis, FIG. 5 is a view taken along line BB of FIG. 4, and FIG. 6 is a single-piece view of the elastic member.
【００２５】本実施の形態２においては、弾性部材とし
て、環状のゴムブッシュ４２を使用している。このゴム
ブッシュ４２は、一般的な合成ゴムによって形成するこ
とができ、その一部に、突出部４２ａを設け、その半径
をＲ２に設定している。この半径Ｒ２は、前述の実施の
形態１と同様の大きさ、すなわち、Ｒ２＞（ｄ１ ／
２）に設定してある。In the second embodiment, an annular rubber bush 42 is used as the elastic member. The rubber bush 42 can be formed of a general synthetic rubber, and a projection 42a is provided on a part thereof, and the radius thereof is set to R2. This radius R2 has the same size as that of the first embodiment, that is, R2> (d1 //
Set to 2).
【００２６】なお、弾性部材として、請求項１の線ばね
４１に代えて、本実施の形態２のゴムブッシュ４２を使
用した場合の作用・効果については、実施の形態１とほ
ぼ同様であるのでその説明は省略する。The operation and effect when the rubber bush 42 of the second embodiment is used as the elastic member in place of the wire spring 41 of the first embodiment are almost the same as those of the first embodiment. The description is omitted.
【００２７】〈実施の形態３〉図７、図８、図９に、実
施の形態３のスプライン結合構造を示す。なお、図７は
軸心を含む縦断面図、また図８は図７のＣ−Ｃ線矢視
図、さらに図９は弾性部材の単品図である。Third Embodiment FIGS. 7, 8 and 9 show a spline connection structure according to a third embodiment. 7 is a longitudinal sectional view including the axis, FIG. 8 is a view taken along line CC of FIG. 7, and FIG. 9 is a single-piece view of the elastic member.
【００２８】本実施の形態３においては、弾性部材とし
て、切れ目を有するほぼ環状の板ばね４３を使用してい
る。なお、本実施の形態３においては、図７に示すよう
に、パイプ部材２０に対して軸部材１０を挿着した状態
において、板ばね４３の始端部４３ａ及び終端部４３ｂ
が、パイプ部材２０の拡管部２４ではなく、内スプライ
ン２１の基端部を押圧するようにしている。これによ
り、パイプ部材２０からの軸部材１０の引抜き、さらに
は再挿入が可能となる。この引抜き時や再挿入時には、
板ばね４３の始端部４３ａ及び終端部４３ｂが、内スプ
ライン２１に摺擦されることになる。したがって、摺擦
に伴う摩耗を減ずべく、板ばね４３全体をフッ素樹脂や
ＭｏＳ２でコーティングしたり、図１０に示すように、
摺擦される部分（始端部４３ａ、終端部４３ｂ）に樹脂
部材４３ｄを取り付けるようにするとよい。In the third embodiment, a substantially annular plate spring 43 having a cut is used as an elastic member. In the third embodiment, as shown in FIG. 7, in a state where the shaft member 10 is inserted into the pipe member 20, the start end 43 a and the end 43 b
However, not the expanded portion 24 of the pipe member 20 but the base end of the inner spline 21 is pressed. As a result, the shaft member 10 can be pulled out from the pipe member 20 and further reinserted. When pulling out or reinserting,
The start end 43a and the end 43b of the leaf spring 43 are rubbed against the inner spline 21. Therefore, in order to reduce the wear caused by the rubbing, the entire leaf spring 43 is coated with fluororesin or MoS2, or as shown in FIG.
It is preferable to attach the resin member 43d to the portions to be rubbed (the start end 43a and the end 43b).
【００２９】〈実施の形態４〉図１１、図１２、図１３
に、実施の形態４のスプライン結合構造を示す。なお、
図１１は軸心を含む縦断面図、また図１２は図１１のＤ
−Ｄ線矢視図、さらに図１３は弾性部材の単品図であ
る。<Embodiment 4> FIGS. 11, 12, and 13
9 shows a spline connection structure according to the fourth embodiment. In addition,
FIG. 11 is a longitudinal sectional view including the axis, and FIG.
FIG. 13 is a view of the elastic member taken along line D-D.
【００３０】本実施の形態４においては、弾性部材とし
て、ゴム層４４ａの表面に樹脂層４４ｂを設けた環状の
ブッシュ４４を使用している。このブッシュ４４は、図
１３に示すように、ゴム層４４ａの内周の中心と樹脂層
４４ｂの外周の中心とを偏心量Ｅだけ偏心させている。
なお、これはゴム層４４ａの厚さを均一ではなく、その
一部を厚くして肉厚部４４ｃを設けることにより可能で
ある。In the fourth embodiment, an annular bush 44 having a resin layer 44b on the surface of a rubber layer 44a is used as an elastic member. As shown in FIG. 13, the bush 44 decenters the center of the inner periphery of the rubber layer 44a and the center of the outer periphery of the resin layer 44b by an eccentric amount E.
It is to be noted that the thickness of the rubber layer 44a is not uniform, but can be provided by thickening a part of the rubber layer 44a to provide the thick portion 44c.
【００３１】図１１に示すように、軸部材１０の挿着時
に、ブッシュ４４が内スプライン２１ａに当接するよう
にすると、ゴム層４４ａの肉厚部４４ｃが弾性変形し、
軸部材１０側の外スプライン１１の先端部を同図中の下
方に付勢し、パイプ部材２０側の内スプライン２１ａの
基端側に押し付ける。As shown in FIG. 11, when the bush 44 is brought into contact with the inner spline 21a when the shaft member 10 is inserted, the thick portion 44c of the rubber layer 44a is elastically deformed.
The distal end portion of the outer spline 11 on the shaft member 10 is urged downward in the drawing, and is pressed against the proximal end side of the inner spline 21a on the pipe member 20 side.
【００３２】なお、本実施の形態４の作用・効果は、上
述の実施の形態３とほぼ同様である。The operation and effect of the fourth embodiment are almost the same as those of the third embodiment.
【００３３】[0033]
【発明の効果】以上説明したように、本発明によると、
軸部材の外スプラインの基端側に第１の緊締部を設け、
外スプラインの先端部近傍に第２の緊締部を設けた、す
なわち、外スプラインにおける軸方向のそれぞれ異なる
位置に、第１の緊締部と第２の緊締部を設け、これらに
よってパイプ部材の内スプラインと軸部材の外スプライ
ンとの間の間隙（ガタ）をなくすようにしているので、
軸部材に回転方向の力が作用したときのガタをなくすこ
とができるのはもちろん、軸部材に曲げ方向の力が作用
したときのガタも有効になくすことができる。As described above, according to the present invention,
A first tightening portion is provided on the base end side of the outer spline of the shaft member,
A second tightening portion is provided near the distal end of the outer spline, that is, a first tightening portion and a second tightening portion are provided at different positions in the axial direction of the outer spline. Since the gap (play) between the shaft and the outer spline of the shaft member is eliminated,
Not only can play be eliminated when a force in the rotation direction acts on the shaft member, but also play can be effectively eliminated when a force in the bending direction acts on the shaft member.
【００３４】したがって、例えば、本発明に係るスプラ
イン結合構造を自動車等のステアリング装置に適用した
場合には、悪路走行等によって車体が振動した場合で
も、従来例１、２とは異なり、軸部材先端部がパイプ部
材内側に当たって運転者にとって不快な異音（打音）や
ショックが発生するということはない。Therefore, for example, when the spline coupling structure according to the present invention is applied to a steering device of an automobile or the like, even if the vehicle body vibrates due to running on a bad road or the like, unlike the conventional examples 1 and 2, the shaft member is different. There is no occurrence of unpleasant noise (hitting sound) or shock unpleasant for the driver due to the tip portion hitting the inside of the pipe member.
【図１】実施の形態１のスプライン結合構造を示す、軸
を含む縦断面図。FIG. 1 is a longitudinal sectional view including a shaft, showing a spline coupling structure according to a first embodiment.
【図２】図１のＡ−Ａ線矢視図。FIG. 2 is a view taken along the line AA of FIG. 1;
【図３】実施の形態１の弾性部材（線ばね）の単品図。FIG. 3 is a single-piece view of an elastic member (wire spring) according to the first embodiment.
【図４】実施の形態２のスプライン結合構造を示す、軸
を含む縦断面図。FIG. 4 is a longitudinal sectional view including a shaft, showing a spline coupling structure according to a second embodiment;
【図５】図４のＢ−Ｂ線矢視図。FIG. 5 is a view taken along line BB of FIG. 4;
【図６】実施の形態２の弾性部材（ゴムブッシュ）の単
品図。FIG. 6 is a single-piece view of an elastic member (rubber bush) according to the second embodiment.
【図７】実施の形態３のスプライン結合構造を示す、軸
を含む縦断面図。FIG. 7 is a longitudinal sectional view including a shaft, showing a spline coupling structure according to a third embodiment;
【図８】図７のＣ−Ｃ線矢視図。FIG. 8 is a view taken along line CC of FIG. 7;
【図９】実施の形態３の弾性部材（板ばね）の単品図。FIG. 9 is a single-piece view of an elastic member (leaf spring) according to the third embodiment.
【図１０】他の板ばねを示す単品図。FIG. 10 is a single-piece drawing showing another leaf spring.
【図１１】実施の形態４のスプライン結合構造を示す、
軸を含む縦断面図。FIG. 11 shows a spline connection structure according to a fourth embodiment.
FIG. 4 is a longitudinal sectional view including an axis.
【図１２】図１１のＤ−Ｄ線矢視図。FIG. 12 is a view taken along line DD in FIG. 11;
【図１３】実施の形態４の弾性部材（ブッシュ）の単品
図。FIG. 13 is a single-piece view of an elastic member (a bush) according to the fourth embodiment.
【図１４】従来例１のスプライン結合構造を示す、軸を
含む縦断面図。FIG. 14 is a longitudinal sectional view including a shaft, showing a spline coupling structure of Conventional Example 1.
【図１５】従来例１の他のスプライン結合構造を示す、
軸を含む縦断面図。FIG. 15 shows another spline coupling structure of Conventional Example 1,
FIG. 4 is a longitudinal sectional view including an axis.
【図１６】従来例２のスプライン結合構造を示す、軸を
含む縦断面図。FIG. 16 is a longitudinal sectional view including a shaft, showing a spline coupling structure of Conventional Example 2.
１０ 軸部材 １１ 外スプライン １２ 環状溝 ２０ パイプ部材 ２１ 内スプライン ２２ スリット ２４ 拡管部 ３０ 第１の緊締部 ３１ 緊締部材 ４０ 第２の緊締部 ４１ 弾性部材（線ばね） ４２ 弾性部材（ゴムブッシュ） ４３ 弾性部材（板ばね） ４４ 弾性部材（ブッシュ） DESCRIPTION OF SYMBOLS 10 Shaft member 11 Outer spline 12 Annular groove 20 Pipe member 21 Inner spline 22 Slit 24 Expansion part 30 First tightening part 31 Tightening member 40 Second tightening part 41 Elastic member (linear spring) 42 Elastic member (rubber bush) 43 Elastic member (leaf spring) 44 Elastic member (bush)
Claims (1)
れた軸部材を、先端部の内周面に内スプラインが形成さ
れたパイプ部材に挿入して嵌合させるスプライン結合構
造において、 前記外スプラインと前記内スプラインとの間の間隙をな
くすための第１の緊締部を、前記外スプラインの基端側
に位置する前記内スプラインの先端部近傍に設け、 前記外スプラインと前記内スプラインとの間の間隙をな
くすための第２の緊締部を、前記内スプラインの基端側
に位置する前記外スプラインの先端部近傍に設け、 前記第２の緊締部は、 前記軸部材の先端部外周面に形成された環状溝と、 該環状溝に係合されるとともに、前記パイプ部材に対す
る前記軸部材の挿入時には前記パイプ部材の内径よりも
小さく圧縮され、また前記パイプ部材に対する前記軸部
材の挿入後には拡開しようとする弾性力により前記軸部
材の先端部近傍の外スプラインを前記パイプ部材の内ス
プラインに押圧する弾性部材と、を有する、 ことを特徴とするスプライン結合構造。1. A spline coupling structure in which a shaft member having an outer spline formed on an outer peripheral surface of a distal end portion is inserted into and fitted to a pipe member having an inner spline formed on an inner peripheral surface of the distal end portion. A first tightening portion for eliminating a gap between the spline and the inner spline is provided near a distal end portion of the inner spline located at a base end side of the outer spline, and a first tightening portion is provided between the outer spline and the inner spline. A second tightening portion for eliminating a gap between the inner splines is provided near a distal end portion of the outer spline located at a base end side of the inner spline; and the second tightening portion is an outer peripheral surface of a distal end portion of the shaft member. An annular groove formed in the pipe member; and being compressed to be smaller than the inner diameter of the pipe member when the shaft member is inserted into the pipe member. Spline coupling structure after insertion of the shaft member; and a resilient member for pressing the outer splines of the vicinity of a leading end portion of the shaft member to the internal splines of said pipe member by an elastic force to be expanded, characterized in that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25010997A JPH1182530A (en) | 1997-09-01 | 1997-09-01 | Spline coupling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25010997A JPH1182530A (en) | 1997-09-01 | 1997-09-01 | Spline coupling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1182530A true JPH1182530A (en) | 1999-03-26 |
Family
ID=17202966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25010997A Pending JPH1182530A (en) | 1997-09-01 | 1997-09-01 | Spline coupling structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1182530A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010047801A (en) * | 1999-11-23 | 2001-06-15 | 밍 루 | Impulse absorption apparatus of steering column for car |
| US7559266B2 (en) | 2006-06-29 | 2009-07-14 | Nsk Ltd. | Telescopic shaft |
| KR20160051315A (en) * | 2014-11-03 | 2016-05-11 | 현대모비스 주식회사 | Steering device for vehicle |
-
1997
- 1997-09-01 JP JP25010997A patent/JPH1182530A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010047801A (en) * | 1999-11-23 | 2001-06-15 | 밍 루 | Impulse absorption apparatus of steering column for car |
| US7559266B2 (en) | 2006-06-29 | 2009-07-14 | Nsk Ltd. | Telescopic shaft |
| KR20160051315A (en) * | 2014-11-03 | 2016-05-11 | 현대모비스 주식회사 | Steering device for vehicle |
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