JP2002293252A - Linking structure and linking method for steering shaft - Google Patents
Linking structure and linking method for steering shaftInfo
- Publication number
- JP2002293252A JP2002293252A JP2001382287A JP2001382287A JP2002293252A JP 2002293252 A JP2002293252 A JP 2002293252A JP 2001382287 A JP2001382287 A JP 2001382287A JP 2001382287 A JP2001382287 A JP 2001382287A JP 2002293252 A JP2002293252 A JP 2002293252A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- shaped
- external gear
- caulking
- gear
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ステアリング装置
において、２つの軸部材同士をカシメ構造により非可動
状態に連結固定するタイプであり、特に、カシメ部を形
成し、両軸部材をしっかりと連結固定するのに大きな荷
重を必要とせずにでき、コスト低減ができ、軸方向及び
回転方向のガタを抑止することができるステアリングシ
ャフトの連結構造及びその連結方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering apparatus in which two shaft members are connected and fixed in a non-movable state by a caulking structure. In particular, a caulking portion is formed and both shaft members are firmly connected. The present invention relates to a steering shaft coupling structure and a coupling method thereof that can be performed without requiring a large load for fixing, can reduce cost, and can suppress backlash in the axial direction and the rotational direction.
【０００２】[0002]
【従来の技術】従来より、ステアリング装置のステアリ
ングシャフトにおいて、異なる軸部材同士を非可動状態
に連結固定する手段としては、溶接による固着や、固定
ピン等にる固着具の使用等により、しっかりと連結固定
されている。また、軸部材同士をカシメにより連結する
構造が特開平９−２７２４４７号に開示されている。こ
れは、２部材の軸体から構成され、その２部材の一方を
雄セレーションが形成された中実軸とし、他方を雌セレ
ーションが形成された中空軸として、前記中空軸に中実
軸を挿入して軸方向に伸縮可能としている。2. Description of the Related Art Conventionally, in a steering shaft of a steering device, means for connecting and fixing different shaft members to each other in a non-movable state have been firmly fixed by welding or using a fixing tool such as a fixing pin. Connected and fixed. A structure in which shaft members are connected to each other by caulking is disclosed in Japanese Patent Application Laid-Open No. 9-27247. This is composed of two member shafts, one of the two members being a solid shaft with male serrations formed and the other being a hollow shaft with female serrations formed, and a solid shaft inserted into the hollow shaft. So that it can expand and contract in the axial direction.
【０００３】そして、中実軸の周方向に形成された周溝
を利用して、該周溝箇所に該当する中空軸の外側位置に
径方向内向きの陥没部が形成されたのち、次いで中空軸
と中実軸とを相互に移動させ、前記陥没部を中実軸側外
周のセレーションを食い込ませたものである。この中間
軸の連結は、中実軸の円形状外周に対して接線方向に陥
没部が形成されるものであり、所定以上の衝撃荷重を受
けたときに、軸方向に短縮して衝撃吸収されるものであ
る。[0003] Using a circumferential groove formed in the circumferential direction of the solid shaft, a radially inward depression is formed at an outer position of the hollow shaft corresponding to the circumferential groove, and then the hollow shaft is formed. The shaft and the solid shaft are moved relative to each other, and the depression is made to penetrate the serrations on the solid shaft side outer periphery. The connection of the intermediate shaft is such that a depression is formed in a tangential direction with respect to the circular outer periphery of the solid shaft, and when a shock load exceeding a predetermined value is applied, the shaft is shortened in the axial direction and the shock is absorbed. Things.
【０００４】[0004]
【発明が解決しようとする課題】２部材より構成したス
テアリングシャフトの連結固定手段として、溶接や、固
定ピン等を使用すると以下の欠点がある。即ち、溶接で
は、連結シャフト構成によって熱歪み等による熱影響が
生じる。また固定ピンにして連結固定する場合では、嵌
合孔の加工や、固定ピン等の部材が必要となる。さら
に、嵌合孔と固定ピンとがしっかり嵌合されなかった
り、工作精度が甘いと、軸方向，回転方向のガタが発生
し、操舵フィーリングを損なうおそれがある。このた
め、嵌合孔と固定ピンは、高精度加工により、部材間の
クリアランスを小さくし、ガタ発生を低減するようにし
ているので、コストが高くなる。以上のようなことか
ら、溶接及び固定ピン等による連結固定手段の使用は好
ましくない。The use of welding, fixing pins or the like as a connecting and fixing means for a steering shaft composed of two members has the following disadvantages. That is, in welding, heat effects such as thermal distortion occur due to the connection shaft configuration. In the case of connecting and fixing with a fixing pin, processing of a fitting hole and members such as a fixing pin are required. Further, if the fitting hole and the fixing pin are not firmly fitted to each other, or if the machining accuracy is poor, play in the axial and rotational directions may occur, and the steering feeling may be impaired. For this reason, the fitting hole and the fixing pin reduce the clearance between the members and reduce the play by high-precision processing, thereby increasing the cost. From the above, it is not preferable to use the connecting and fixing means by welding and fixing pins.
【０００５】また、上記特開平９−２７２４４７号に開
示されたものは、所定以上の荷重がかかることにより、
重合箇所が相互に安定した状態で移動することができる
ようになっている。これは、ステアリング装置にかかる
衝撃を吸収するものであり、軸部材同士を非可動状態に
しっかりと連結固定するものではない。[0005] Further, the one disclosed in the above-mentioned Japanese Patent Application Laid-Open No. Hei 9-27247 is applied with a load of a predetermined value or more.
The polymerization points can move in a mutually stable state. This absorbs the shock applied to the steering device, and does not firmly connect and fix the shaft members in a non-movable state.
【０００６】しかし、カシメ手段を介して２つの軸部材
を非可動状態で連結固定するには、１つのカシメ部では
連結強度が不足で、軸方向の衝撃に極めて弱く、２つの
軸部材同士が相互に移動するおそれがある。そのため
に、複数のカシメ部が必要となるが、カシメ部が多くな
ると、連結作業時にそのカシメ部を介して軸部材同士が
干渉しあい、大きな荷重が必要となり、製造機械も大が
かりとなり、作業が極めて困難で、ひいてはコスト高と
なる。本発明の目的は、ステアリングシャフトにおける
２つの軸部材をカシメ手段により連結固定するのに比較
的小さな荷重にて行うことが可能となるようにすること
にある。However, when the two shaft members are connected and fixed via the caulking means in a non-movable state, the connection strength of one caulked portion is insufficient, and the two shaft members are extremely weak against an axial impact. There is a risk that they will move with each other. Therefore, a plurality of caulking parts are required, but when the number of caulking parts increases, the shaft members interfere with each other via the caulking parts during the connection work, a large load is required, the manufacturing machine becomes large, and the work is extremely Difficult and consequently costly. SUMMARY OF THE INVENTION An object of the present invention is to make it possible to connect and fix two shaft members of a steering shaft by caulking means with a relatively small load.
【０００７】[0007]
【課題を解決するための手段】そこで、発明者は、上記
課題を解決すべく、鋭意，研究を重ねた結果、本発明
を、軸端側から外歯車状部及び細径軸部が形成された中
実軸と、内歯車状部が形成され，該内歯車状部の軸方向
で且つ前記外歯車状部の軸方向長さより短い適宜の間隔
をおいて設定された第１位置及び第２位置にて内方に突
出するカシメ変形部が形成された中空軸とからなり、前
記中実軸の外歯車状部に前記内歯車状部の第１及び第２
位置のカシメ変形部が押圧状態で係合してなるステアリ
ングシャフトの連結構造及び連結方法等としたことによ
り、２つの軸部材同士をカシメ構造により非可動状態に
連結固定するタイプとして、特にカシメ部を形成し、両
軸部材をしっかりと連結固定するのに大きな荷重を必要
とせずにでき、コスト低減ができ、しかも軸方向及び回
転方向のガタを抑止することができ、上記課題を解決し
たものである。The inventor of the present invention has conducted intensive studies to solve the above-mentioned problems, and as a result, the present invention has shown that an external gear-shaped portion and a small-diameter shaft portion are formed from the shaft end side. And a first position and a second position which are set at appropriate intervals in the axial direction of the internal gear-shaped portion and shorter than the axial length of the external gear-shaped portion. And a hollow shaft formed with a caulking deforming portion projecting inward at a position. The first and second internal gear-like portions are formed on the outer gear-like portion of the solid shaft.
The coupling structure and the coupling method of the steering shaft in which the caulked deformation portion at the position is engaged in the pressed state, and the like, so that the two shaft members are connected and fixed in a non-movable state by the caulking structure, particularly the caulked portion. Which solves the above-mentioned problems by eliminating the need for a large load to firmly connect and fix the two shaft members, reducing the cost, and suppressing the backlash in the axial and rotational directions. It is.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。まず、本発明の第１実施形態につい
て説明する。ステアリングシャフトは、図１（Ａ）に示
すように、ステアリング装置を構成する一部材であり、
中実軸Ａと中空軸Ｂとから構成されるものである。その
中実軸Ａは、図２（Ａ）に示すように、軸端部から軸方
向に外歯車状軸部１及び細径軸部２が形成されている。
外歯車状軸部１は、その軸方向に直交する断面が略歯車
形状に形成されたもので、具体的にはセレーション又は
スプライン等である。その外歯車状軸部１には、軸方向
に沿って適宜の位置に軸周方向に溝部３が形成されてい
る。また、中実軸Ａには、フランジ部４が形成されてお
り、ステアリング装置を構成する他の部材との連結を可
能としている〔図１（Ｂ），図４等参照〕。Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described. As shown in FIG. 1 (A), the steering shaft is one member of a steering device.
It comprises a solid shaft A and a hollow shaft B. As shown in FIG. 2A, the solid shaft A has an external gear-shaped shaft portion 1 and a small-diameter shaft portion 2 formed in the axial direction from the shaft end.
The cross section orthogonal to the axial direction of the external gear-shaped shaft portion 1 is formed in a substantially gear shape, and is specifically a serration or a spline. The external gear-shaped shaft portion 1 is formed with a groove portion 3 at an appropriate position along the axial direction in the axial circumferential direction. Further, the solid shaft A is formed with a flange portion 4 to enable connection with other members constituting the steering device (see FIGS. 1B and 4).
【０００９】前記中空軸Ｂは、管状の軸本体５の内周側
に内歯車状部６が形成されたものである。該内歯車状部
６は、前記中実軸Ａの外歯車状軸部１と噛み合う構成と
なっており、中実軸Ａと中空軸Ｂの相互に回転方向の伝
達を行うことができる。その内歯車状部６は、軸方向に
直交する断面が内歯車状であり、具体的には、前記外歯
車状軸部１と同様にセレーション又はスプライン等であ
る。The hollow shaft B is formed by forming an internal gear-shaped portion 6 on the inner peripheral side of a tubular shaft main body 5. The internal gear-shaped portion 6 is configured to mesh with the external gear-shaped shaft portion 1 of the solid shaft A, so that the solid shaft A and the hollow shaft B can transmit the rotation direction to each other. The internal gear-shaped portion 6 has an internal gear-shaped cross section perpendicular to the axial direction. Specifically, like the external gear-shaped shaft portion 1, the internal gear-shaped portion 6 is a serration or a spline.
【００１０】その中空軸Ｂは、軸端から軸方向に沿って
第１位置Ｐ1 及び第２位置Ｐ2 が設定され、その第１位
置Ｐ1 及び第２位置Ｐ2 には、図２（Ａ），（Ｂ）及び
図４に示すように、それぞれカシメ変形部７が形成され
る。実際には、第１位置Ｐ1及び第２位置Ｐ2 は、前記
中実軸Ａとの連結固定作業時に、強固なる固定をするた
めのカシメ変形部７が形成される箇所であり〔図２
（Ｂ）参照〕、連結固定をするための組立前には、図２
（Ａ）に示すように、第１位置Ｐ1 及び第２位置Ｐ 2 に
はカシメ変形部７が形成されていない。前記中実軸Ａと
中空軸Ｂとが軸方向に連結固定されるものであり、中実
軸Ａの他端側はハンドル側シャフトとジョイントを介し
て連結され、また中空軸Ｂは、軸方向に伸縮可能な構造
となっており、その他端側は、前輪の操舵機構側に連結
される。The hollow shaft B extends along the axial direction from the shaft end.
1st position P1And the second position PTwoIs set, and its first place
Place P1And the second position PTwo2 (A), (B) and
As shown in FIG. 4, each of the caulking deformation portions 7 is formed.
You. Actually, the first position P1And the second position PTwoIs
When connecting and fixing the solid shaft A,
This is where the swaging deformation portion 7 is formed [FIG.
(See FIG. 2B). Before assembling for connecting and fixing, FIG.
As shown in (A), the first position P1And the second position P TwoTo
Does not have the crimp deformation portion 7 formed. With the solid axis A
The hollow shaft B is connected and fixed in the axial direction.
The other end of axis A is connected to the handle shaft and joint.
The hollow shaft B has a structure that can be extended and contracted in the axial direction.
The other end is connected to the front wheel steering mechanism side
Is done.
【００１１】次に、前記中実軸Ａと中空軸Ｂとの連結固
定の組立の工程について説明する。まず、前記中空軸Ｂ
の内周側に前記中実軸Ａの外歯車状軸部１及び細径軸部
２が挿入される。このとき図４（Ａ），（Ｂ）に示すよ
うに、中空軸Ｂの軸端箇所に対して中実軸Ａの細径軸部
２が深く挿入される。ここで、中空軸Ｂに第１位置Ｐ 1
と第２位置Ｐ2 とが中空軸Ｂに設定される。前記第１位
置Ｐ1 が軸端側であり、第２位置Ｐ2 が前記第１位置Ｐ
1 よりも軸方向奥側に設定される。Next, the connection between the solid shaft A and the hollow shaft B is fixed.
The fixed assembly process will be described. First, the hollow shaft B
The outer gear-shaped shaft portion 1 and the small-diameter shaft portion of the solid shaft A
2 is inserted. At this time, as shown in FIGS.
Thus, the small-diameter shaft portion of the solid shaft A with respect to the shaft end portion of the hollow shaft B
2 is inserted deeply. Here, the first position P 1
And the second position PTwoAre set to the hollow shaft B. The first place
Place P1Is the shaft end side, and the second position PTwoIs the first position P
1It is set on the axial back side.
【００１２】そして、中空軸Ｂの第１位置Ｐ1 は、前記
中実軸Ａの細径軸部２の箇所に対応させ、第２位置Ｐ2
は、前記溝部３の位置に対応させる。この状態で中空軸
Ｂの第１位置Ｐ1 及び第２位置Ｐ2 にそれぞれカシメ変
形部７が形成される。該カシメ変形部７は、中空軸Ｂの
第１位置Ｐ1 及び第２位置Ｐ2 のそれぞれの周方向に等
間隔に複数が形成される。具体的には、等間隔に３箇所
形成されるのが好適である〔図３（Ａ）参照〕が、２箇
所形成されることもあるし〔図３（Ｂ）参照〕、１箇所
のみに形成されることもある〔図３（Ｃ）参照〕。The first position P 1 of the hollow shaft B corresponds to the position of the small-diameter shaft portion 2 of the solid shaft A, and the second position P 2
Correspond to the position of the groove 3. The first position P 1 and the second at a position P 2 crimping deformation portion 7 of the hollow shaft B is formed in this state. The crimping deformation portion 7, plurality of first respective circumferential position P 1 and the second position P 2 of the hollow shaft B at equal intervals is formed. Specifically, it is preferable to form three places at equal intervals (see FIG. 3A), but two places may be formed [see FIG. 3B], and only one place is formed. It may be formed (see FIG. 3C).
【００１３】前記カシメ変形部７は、中空軸Ｂの内周側
に突出するようにして形成されるものである〔図２
（Ｃ）参照〕。そして、中空軸Ｂが前記中実軸Ａから外
れる方向に移動させる。ここで、第２位置Ｐ2 に形成さ
れたカシメ変形部７は、前記溝部３の位置から外歯車状
軸部１に移動し、そのままカシメ変形部７が外歯車状軸
部１をしごくようにして外歯車状軸部１の軸端側に向か
う〔図４（Ｃ）参照〕。The caulking deformation portion 7 is formed so as to protrude toward the inner peripheral side of the hollow shaft B [FIG.
(C)). Then, the hollow shaft B is moved in a direction away from the solid shaft A. Here, the caulking deformed portion 7 formed at the second position P 2 moves from the position of the groove 3 to the external gear-shaped shaft portion 1, and the caulking deformed portion 7 pushes the external gear-shaped shaft portion 1 as it is. Toward the shaft end of the external gear-shaped shaft portion 1 (see FIG. 4C).
【００１４】一方，第１位置Ｐ1 に形成されたカシメ変
形部７は細径軸部２を軸方向に沿って移動し、前記第２
位置Ｐ2 に形成されたカシメ変形部７が軸端に到達する
と同時に、細径軸部２から外歯車状軸部１に移動する。
そして、第１位置Ｐ1 及び第２位置Ｐ2 にそれぞれ形成
されたカシメ変形部７が外歯車状軸部１を軸方向に適宜
の間隔をおいて、食い付くようにして強圧状態で当接
し、中実軸Ａと中空軸Ｂとの連結固定作業が完了する
〔図４（Ｄ）参照〕。On the other hand, the caulking deformation portion 7 formed at the first position P 1 moves the small diameter shaft portion 2 along the axial direction, and
At the same time when the caulking deformed portion 7 formed at the position P 2 reaches the shaft end, it moves from the small-diameter shaft portion 2 to the external gear-shaped shaft portion 1.
The caulking deformation portions 7 formed at the first position P 1 and the second position P 2 abut the external gear-shaped shaft portion 1 at an appropriate interval in the axial direction so as to bite each other in a strong pressure state. Then, the connection and fixing work between the solid shaft A and the hollow shaft B is completed (see FIG. 4D).
【００１５】図５は、中実軸Ａに形成されたカシメ変形
部７が中実軸Ａの外歯車状軸部１に食い込むようにして
連結される工程を示す拡大図である。前記カシメ変形部
７の外歯車状軸部１に対して移動する際に、該外歯車状
軸部１の軸径方向に対して、カシメ変形部７が次第に外
歯車状軸部１に食い込むように変形され、安定した締付
状態にすることができる。FIG. 5 is an enlarged view showing a step of connecting the caulking deformed portion 7 formed on the solid shaft A so as to bite into the external gear-shaped shaft portion 1 of the solid shaft A. When moving with respect to the external gear-shaped shaft portion 1 of the caulking deformation portion 7, the caulking deformation portion 7 gradually bites into the external gear-shaped shaft portion 1 in the axial direction of the external gear-shaped shaft portion 1. And a stable tightening state can be obtained.
【００１６】また、第１位置Ｐ1 及び第２位置Ｐ2 の２
箇所にカシメ変形部７が設けられていても、外歯車状軸
部１に食い付くカシメ変形部７は、第２位置Ｐ2 に形成
されたカシメ変形部７、即ち外歯車状軸部１の溝部３に
対応する位置に形成されたカシメ変形部７からである
〔図５（Ａ）参照〕。その第２位置Ｐ2 のカシメ変形部
７が外歯車状軸部１に対してしごき状態が安定したころ
に第１位置Ｐ1 に形成されたカシメ変形部７が細径軸部
２から外歯車状軸部１に入り込み外歯車状軸部１に食い
付き、第１位置Ｐ1 及び第２位置Ｐ2 のカシメ変形部７
の外歯車状軸部１への食付きが完成する〔図５（Ｂ），
（Ｃ）参照〕。Further, 2 of the first position P 1 and the second position P 2
Even if the caulking deformation portion 7 is provided at the location, the caulking deformation portion 7 that bites into the external gear-shaped shaft portion 1 is the caulking deformation portion 7 formed at the second position P 2 , that is, the external gear-shaped shaft portion 1. This is from the swaging deformed portion 7 formed at a position corresponding to the groove 3 [see FIG. 5 (A)]. When the caulking deformation portion 7 at the second position P 2 is stable in the ironing state with respect to the external gear-shaped shaft portion 1, the caulking deformation portion 7 formed at the first position P 1 is moved from the small-diameter shaft portion 2 to the external gear. Penetrates into the external shaft-shaped shaft portion 1 and bites into the external gear-shaped shaft portion 1 to form the caulked deformation portion 7 at the first position P 1 and the second position P 2.
Is completed on the external gear shaft 1 [FIG. 5 (B),
(C)).
【００１７】この中実軸Ａの細径軸部２側で形成された
第１位置Ｐ1 のカシメ変形部７は、先に外歯車状軸部１
に食い付いたカシメ変形部７の軸径方向、周方向のカシ
メ状態を安定させるとともに、第２位置Ｐ2 のカシメ変
形部７の外歯車状軸部１に対する移動を案内しつつ、前
記外歯車状軸部１の山，谷との食付き精度を確保でき、
安定且つ強固なカシメ変形部７の食付き状態とすること
ができる。前記中実軸Ａの細径軸部２は、中空軸Ｂのカ
シメ変形部７を形成するだけでなく、ステアリングシャ
フトのヒューズ部としての役目もなし、万一の衝撃にお
いて、ヒューズ部とした細径軸部２が破損し、衝撃エネ
ルギを遮断して一次衝撃を運転者へ伝えないようにする
ことができる。The caulking deformation portion 7 at the first position P 1 formed on the small-diameter shaft portion 2 side of the solid shaft A is first provided with the external gear-shaped shaft portion 1.
While stabilizing the crimping state of the caulking deforming portion 7 in the axial direction and the circumferential direction, and guiding the movement of the caulking deforming portion 7 at the second position P 2 with respect to the external gear-shaped shaft portion 1, Biting accuracy between the peaks and valleys of the shaft part 1 can be secured,
A stable and strong caulking deformation portion 7 can be brought into a biting state. The small-diameter shaft portion 2 of the solid shaft A not only forms the caulked deformation portion 7 of the hollow shaft B, but also does not serve as a fuse portion of the steering shaft. The radial shaft portion 2 is damaged, and the impact energy can be cut off to prevent the primary impact from being transmitted to the driver.
【００１８】前記中空軸Ｂにカシメ変形部７を軸方向に
適宜距離をおいて、第１位置Ｐ1 及び第２位置Ｐ2 の２
箇所に設けることで、連結部における曲げ方向の力に対
して強度を確保することができる。さらに工作時におい
ては、２箇所のカシメ変形部７が中実軸Ａの外歯車状軸
部１への食付き移動を同時にすることがないので、中実
軸Ａから中空軸Ｂを引き離す方向に移動させて、連結固
定を行うときにも、大きな荷重によって食付き加工をす
ることが避けられ大荷重加工によるワークの余計な変形
を防ぐことができる。[0018] at appropriate distance caulking deformation portion 7 to the hollow shaft B axially of the first position P 1 and the second position P 2 2
By providing it at a location, it is possible to ensure strength against the force in the bending direction at the connecting portion. Further, at the time of machining, since the two caulking deformation portions 7 do not simultaneously bite and move the solid shaft A to the external gear-shaped shaft portion 1 in the direction in which the hollow shaft B is separated from the solid shaft A. Even when moving and connecting and fixing, it is possible to avoid biting work due to a large load and to prevent unnecessary deformation of the work due to the heavy load processing.
【００１９】図６は、中実軸Ａの外歯車状軸部１に溝部
３が形成されないタイプのもので、連結する工程を示し
ている。この場合には、細径軸部２箇所で第１位置Ｐ1
及び第２位置Ｐ2 を設定し、カシメ変形部７が形成され
る〔図６（Ｂ）参照〕。そして、前述のタイプと同様に
中空軸Ｂを中実軸Ａより引き出しカシメ変形部７を外歯
車状軸部１に食い付かせるものである〔図６（Ｃ），
（Ｄ）参照〕。FIG. 6 shows a step of connecting the solid shaft A of the type in which the groove 3 is not formed in the external gear shaft 1. In this case, the first position P 1 is set at the two small diameter shaft portions.
And second setting positions P 2, crimping deformation portion 7 is formed [see FIG. 6 (B)]. Then, similarly to the above-mentioned type, the hollow shaft B is drawn out from the solid shaft A, and the caulking deformation portion 7 is made to bite into the external gear-shaped shaft portion 1 [FIG.
(D)).
【００２０】次に、本発明におけるステアリングシャフ
トの連結構造の第２実施形態について図７乃至図１２に
基づいて説明する。まず前述したように、先の実施形態
では、前記第１位置Ｐ1 及び第２位置Ｐ2 のカシメ変形
部７は、中実軸Ａの外歯車状軸部１と中空軸Ｂの内歯車
状部６とを軸方向に相対移動によって、前記中空軸Ｂの
内方に突出するカシメ変形部７と外歯車状軸部１とを押
圧状態で係合する構造としたものである。Next, a second embodiment of the connection structure of the steering shaft according to the present invention will be described with reference to FIGS. First, as described above, in the above embodiment, the caulking deformation portion 7 at the first position P 1 and the second position P 2 includes the external gear-shaped shaft portion 1 of the solid shaft A and the internal gear-shaped shaft portion of the hollow shaft B. The portion 6 and the external gear-shaped shaft portion 1 are engaged with each other by pressing the deformed portion 7 protruding inward of the hollow shaft B and the external gear-shaped shaft portion 1 by relative movement in the axial direction.
【００２１】第２実施形態では、図７，図１０等に示す
ように、前記第１位置Ｐ1 及び第２位置Ｐ2 にそれぞれ
形成されて設けられるカシメ変形部７，７，…に加え
て、新たに設定される第３位置Ｐ3 にカシメ変形部７が
設けられるものである。[0021] In the second embodiment, as shown in FIGS. 7 and 10, etc., the first position P 1 and the second position P 2 in the crimping deformation portions 7 provided respectively formed, in addition to ... , in which crimping deformation portion 7 is provided in the third position P 3 to be newly set.
【００２２】前記第３位置Ｐ3 は、前記中空軸Ｂに設定
された第１位置Ｐ1 及び第２位置Ｐ 2 の中間の所定位置
に設定される。The third position PThreeIs set to the hollow shaft B
First position P1And the second position P TwoPredetermined position in the middle of
Is set to
【００２３】さらに具体的には、前記中空軸Ｂの内周側
に前記中実軸Ａの外歯車状軸部１及び細径軸部２が挿入
され、前記中空軸Ｂにそれぞれ第１位置Ｐ1 と第２位置
Ｐ2とが設定され、これら第１位置Ｐ1 及び第２位置Ｐ
2 にそれぞれカシメ変形部７が形成される。そして、前
記第３位置Ｐ3 は、図７，図１０に示すように、前記第
１位置Ｐ1 と前記第２位置Ｐ2 のカシメ変形部７，７に
おける軸方向間であって、前記中空軸Ｂと固定状態に連
結された前記中実軸Ａの外歯車状軸部１の中間にある軸
周方向の溝部３に対応する位置が第３位置Ｐ3 となる。More specifically, an outer gear-shaped shaft portion 1 and a small-diameter shaft portion 2 of the solid shaft A are inserted into the inner peripheral side of the hollow shaft B, and a first position P is inserted into the hollow shaft B, respectively. 1 and the second position P 2 is set, these first position P 1 and the second position P
2 are each formed with a crimp deformation portion 7. Then, the third position P 3 is 7, as shown in FIG. 10, a axially between the first position P 1 and the second position P 2 of the caulking deformation portions 7, wherein the hollow axis B and the corresponding position in the axial peripheral direction of the groove 3 in the middle of the external gear shaped shaft portion 1 of said solid axis a which is connected in a fixed state is the third position P 3.
【００２４】そして、前記第３位置Ｐ3 にも中間カシメ
変形部８が形成される。該中間カシメ変形部８は、前記
第１位置Ｐ1 及び第２位置Ｐ2 に形成されたカシメ変形
部７とほぼ同等形状である。その第３位置Ｐ3 に形成さ
れる中間カシメ変形部８は、図９（Ａ）及び図９（Ｂ）
に示すように、中空軸Ｂの溝部３に係合する状態とな
る。また、通常は、図９（Ｃ）に示すように、前記中間
カシメ変形部８は、中空軸Ｂの軸周方向に沿って複数形
成される。[0024] The intermediate caulking deformation portion 8 is formed in the third position P 3. Intermediate caulking deformable portion 8 is substantially equal to the shape and the first position P 1 and the second position P 2 crimping deformation portion 7 formed. Its third intermediate caulking deformation portion 8 formed at the position P 3, the FIGS. 9 (A) and 9 Fig 9 (B)
As shown in (2), the hollow shaft B is engaged with the groove 3. Normally, as shown in FIG. 9C, a plurality of the intermediate caulking deformed portions 8 are formed along the circumferential direction of the hollow shaft B.
【００２５】このように複数の中間カシメ変形部８，
８，…が形成される場合には、軸周方向に等間隔で形成
されることが好ましいが、必ずしも等間隔とする必要は
ない。また、必要に応じて、中間カシメ変形部８が軸周
方向に２つのみ形成されることもある〔図９（Ｄ）参
照〕。また中間カシメ変形部８は軸周方向に一つのみ形
成されることもある〔図９（Ｅ）参照〕。また、前記第
３位置Ｐ3 に形成される中間カシメ変形部８が溝部３に
係合する状態は、図９（Ｂ）に示すように、該溝部３と
中間カシメ変形部８とが少なくとも一部が当接する構造
としたものであり、また中間カシメ変形部８が溝部３に
係合するとともに押圧状態が加わるようにすることもあ
る。また、中間カシメ変形部８が溝部３に入り込むが、
このとき中間カシメ変形部８と溝部３の底とが非接触状
態であってもかまわない。As described above, the plurality of intermediate caulking deformation portions 8,
When forming 8,..., It is preferable that they are formed at equal intervals in the axial circumferential direction, but they do not necessarily have to be at equal intervals. Further, if necessary, only two intermediate caulking deformation portions 8 may be formed in the axial direction (see FIG. 9D). Further, only one intermediate caulking deformation portion 8 may be formed in the circumferential direction of the shaft (see FIG. 9E). The third position state where the intermediate caulking deformable portion 8 formed P 3 is engaged with the groove part 3, as shown in FIG. 9 (B), the groove portion 3 and the intermediate caulking deformation portion 8 and at least one In this case, the intermediate caulking deformed portion 8 is engaged with the groove 3 and a pressing state may be applied. Also, the intermediate caulking deformation portion 8 enters the groove portion 3,
At this time, the intermediate caulked deformation portion 8 and the bottom of the groove 3 may be in a non-contact state.
【００２６】また、前記中間カシメ変形部８を中空軸Ｂ
の軸周方向に沿って複数形成された場合には、図１０
（Ａ）に示すように、前記第１位置Ｐ1 及び第２位置Ｐ
2 のカシメ変形部７の軸周方向の位置に対して均等に適
宜ずれていることが好ましい。すなわち、前記第１位置
Ｐ1 及び第２位置Ｐ2 にカシメ変形部７，７，…がそれ
ぞれ軸周方向に沿って等間隔に形成された場合、前記第
３位置Ｐ3 の軸周方向に沿って形成されるそれぞれの中
間カシメ変形部８，８，…は、軸周方向において隣接す
る前記カシメ変形部７，７間に位置するように形成され
るものである。Further, the intermediate caulking deformation portion 8 is formed by a hollow shaft B
10 are formed along the circumferential direction of FIG.
As shown in (A), the first position P 1 and the second position P
It is preferable that the second caulking deformation portion 7 is evenly and appropriately shifted with respect to the axial position. That is, the first position P 1 and the second position P 2 in the crimping deformation portions 7, ... may have been formed at regular intervals along the axial circumferential direction, the axial peripheral direction of the third position P 3 Are formed so as to be located between the adjacent caulking deformation portions 7, 7 in the axial circumferential direction.
【００２７】たとえば、前記第１及び第２位置Ｐ2 を基
準として、軸周方向に沿って複数のカシメ変形部７，
７，…が等間隔に３箇所に形成されるとすれば、それぞ
れに軸周方向に沿って隣接するカシメ変形部７，７は、
前記中空軸Ｂの直径方向中心を基準にして１２０度であ
る〔図１０（Ｂ）は、第１位置Ｐ1 及び第２位置Ｐ2 に
おけるＸ2 −Ｘ2 矢視断面図〕。そして、前記第３位置
Ｐ3 の軸周方向に形成される中間カシメ変形部８が前記
軸周方向に隣接するカシメ変形部７，７の中間位置とな
るように設定して形成されると、カシメ変形部７と中間
カシメ変形部８との軸周方向における角度は、ほぼ６０
度均等にズレた位置に形成されることになる〔図１０
（Ｃ）参照〕。For example, with reference to the first and second positions P 2 , a plurality of caulking deformation portions 7,
Assuming that 7,... Are formed at three locations at equal intervals, the caulking deformation portions 7, 7 adjacent to each other in the axial circumferential direction are:
The hollow shaft 120 degrees with respect to the diameter direction center of B [FIG. 10 (B), X 2 -X 2 cross-sectional view taken at the first position P 1 and the second position P 2]. When the intermediate caulking deformation portion 8 formed in the axial peripheral direction of the third position P 3 is formed by setting so that the intermediate position of the crimping deformation portions 7 adjacent to the axis circumferential direction, The angle between the caulking deformation portion 7 and the intermediate caulking deformation portion 8 in the axial circumferential direction is approximately 60
10 are formed at positions that are evenly displaced.
(C)).
【００２８】勿論、上記のように、カシメ変形部７及び
中間カシメ変形部８は、軸周方向においてほぼ６０度ず
れることに限定されるものではなく、適宜角度に設定さ
れてもよい。また、前記第１位置Ｐ1 及び第２位置Ｐ2
のカシメ変形部７と、前記第３位置Ｐ3 の中間カシメ変
形部８は、軸周方向にずれていることが好ましいが、必
ずしもこの限りではなく、カシメ変形部７と中間カシメ
変形部８とが軸方向に沿って同一位置に形成されたもの
であってもかまわない。この中空軸Ｂの第３位置Ｐ3 に
おける中間カシメ変形部８と、中実軸Ａの溝部３との係
合により、カシメ変形部７のみの係合による連結固定状
態よりも更に強固な連結固定を得ることができる。Of course, as described above, the caulking deformation portion 7 and the intermediate caulking deformation portion 8 are not limited to being shifted by approximately 60 degrees in the axial circumferential direction, but may be set to an appropriate angle. Further, the first position P 1 and the second position P 2
A caulking deformation portion 7 of an intermediate caulking deformation portion 8 of the third position P 3 is preferably that are shifted in the axial circumferential direction, not necessarily this shall, a caulking deformation portion 7 and the intermediate caulking deformation portion 8 May be formed at the same position along the axial direction. An intermediate caulking deformation portion 8 in a third position P 3 of the hollow shaft B, the engagement between the groove 3 of the solid shaft A, more robust coupling fixing of the connecting fixing state by engagement of only crimping deformation portion 7 Can be obtained.
【００２９】次に、第２実施形態における組立方法、す
なわち中実軸Ａと中空軸Ｂとの連結固定の組立工程につ
いて説明する。この工程は先の実施形態とほぼ同様の工
程となるが最終段階で異なる。まず、図１１（Ａ），
（Ｂ）に示すように、前記中空軸Ｂの内周側に前記中実
軸Ａの外歯車状軸部１及び細径軸部２が深く挿入され、
前記中空軸Ｂに第１位置Ｐ1 と第２位置Ｐ2 とが中空軸
Ｂに設定される。このとき、前記第１位置Ｐ1 が軸端側
であり、第２位置Ｐ2 が前記第１位置Ｐ1 よりも軸方向
奥側に設定される。Next, an assembling method in the second embodiment, that is, an assembling step of connecting and fixing the solid shaft A and the hollow shaft B will be described. This step is almost the same as the previous embodiment, but differs in the final stage. First, FIG.
As shown in (B), the outer gear-shaped shaft portion 1 and the small-diameter shaft portion 2 of the solid shaft A are deeply inserted into the inner peripheral side of the hollow shaft B,
A first position P 1 and a second position P 2 are set on the hollow shaft B. At this time, the first position P 1 is an axial end side, is set axially back side second position P 2 is higher than the first position P 1.
【００３０】そして、図１１（Ｃ）に示すように、中空
軸Ｂの第１位置Ｐ1 は、前記中実軸Ａの細径軸部２の箇
所に対応させ、第２位置Ｐ2 は、前記溝部３の位置に対
応させる。この状態で中空軸Ｂの第１位置Ｐ1 及び第２
位置Ｐ2 にそれぞれカシメ変形部７が形成される。該カ
シメ変形部７は、中空軸Ｂの第１位置Ｐ1 及び第２位置
Ｐ2 のそれぞれの周方向に等間隔に複数が形成される。As shown in FIG. 11C, the first position P 1 of the hollow shaft B corresponds to the position of the small-diameter shaft portion 2 of the solid shaft A, and the second position P 2 is The position corresponds to the position of the groove 3. In this state, the first position P 1 of the hollow shaft B and the second position P 1
Each crimping deformation portion 7 is formed at a position P 2. The crimping deformation portion 7, plurality of first respective circumferential position P 1 and the second position P 2 of the hollow shaft B at equal intervals is formed.
【００３１】前記カシメ変形部７は、中空軸Ｂの内周側
に突出するようにして形成され、該中空軸Ｂを前記中実
軸Ａから外れる方向に移動させる。ここで、第２位置Ｐ
2 に形成されたカシメ変形部７は、図１１（Ｄ）に示す
ように、前記溝部３の位置から外歯車状軸部１に移動
し、そのままカシメ変形部７が外歯車状軸部１をしごく
ようにして外歯車状軸部１の軸端側に向かう。The caulking deformation portion 7 is formed so as to protrude toward the inner peripheral side of the hollow shaft B, and moves the hollow shaft B in a direction away from the solid shaft A. Here, the second position P
As shown in FIG. 11 (D), the swaging deformed portion 7 formed in FIG. 2 moves from the position of the groove 3 to the external gear-shaped shaft portion 1, and the swaging deformed portion 7 moves the external gear-shaped shaft portion 1 as it is. It goes to the shaft end side of the external gear-shaped shaft portion 1 in a stiff manner.
【００３２】一方，第１位置Ｐ1 に形成されたカシメ変
形部７は細径軸部２を軸方向に沿って移動し、前記第２
位置Ｐ2 に形成されたカシメ変形部７が軸端に到達する
と同時に、細径軸部２から外歯車状軸部１に移動し、前
記第１位置Ｐ1 及び第２位置Ｐ2 にそれぞれ形成された
カシメ変形部７が外歯車状軸部１を軸方向に適宜の間隔
をおいて、食い付くようにして強圧状態で当接する〔図
１１（Ｄ）参照〕。次に、前記中空軸Ｂの第３位置Ｐ3
に中間カシメ変形部８が形成されると、該中間カシメ変
形部８は、中実軸Ａの溝部３に入り込む状態で係合する
〔図１１（Ｅ）参照〕。これによって、中実軸Ａと中空
軸Ｂとの連結固定が完了する。On the other hand, the caulking deformation portion 7 formed at the first position P 1 moves the small diameter shaft portion 2 along the axial direction, and
Simultaneously crimping deformation portion 7 formed at a position P 2 reaches the shaft end to move from the small diameter shaft portion 2 to the outer toothed shaft portion 1, respectively formed in the first position P 1 and the second position P 2 The caulked deformation portion 7 bites the external gear-shaped shaft portion 1 at an appropriate interval in the axial direction so as to bite the outer gear-shaped shaft portion 1 (see FIG. 11D). Next, the third position P 3 of the hollow shaft B
When the intermediate caulking deformed portion 8 is formed in the solid shaft A, the intermediate caulking deformed portion 8 engages with the groove 3 of the solid shaft A (see FIG. 11E). This completes the connection and fixing of the solid shaft A and the hollow shaft B.
【００３３】図１２は、第２実施形態における工程を示
す要部の拡大図であり、図１２（Ａ）乃至（Ｃ）では、
前記中空軸Ｂの第１位置Ｐ1 及び第２位置Ｐ2 にカシメ
変形部７が形成された状態で、中実軸Ａと中空軸Ｂとが
所定の位置に設定され、その状態で、図１２（Ｄ）で
は、第３位置Ｐ3 に中間カシメ変形部８が形成され、該
中間カシメ変形部８が溝部３に食い込む状態となってい
る。FIG. 12 is an enlarged view of a main part showing a process in the second embodiment. In FIGS.
The solid shaft A and the hollow shaft B are set at predetermined positions in a state where the caulked deformation portion 7 is formed at the first position P 1 and the second position P 2 of the hollow shaft B. in 12 (D), an intermediate caulking deformation portion 8 is formed in the third position P 3, the intermediate caulking deformation portion 8 is in a state biting into the grooves 3.
【００３４】[0034]
【発明の効果】請求項１の発明は、軸端側から外歯車状
軸部１及び細径軸部２が形成された中実軸Ａと、内歯車
状部６が形成され，該内歯車状部６の軸方向で且つ前記
外歯車状軸部１の軸方向長さより短い適宜の間隔をおい
て設定された第１位置Ｐ1 及び第２位置Ｐ2 にて内方に
突出するカシメ変形部７が形成された中空軸Ｂとからな
り、前記中実軸Ａの外歯車状軸部１に前記内歯車状部６
の第１及び第２位置Ｐ1，Ｐ2 のカシメ変形部７が押圧
状態で係合してなるステアリングシャフトの連結構造と
したことにより、第１にステアリング装置において、両
軸部材をしっかりと連結固定するときに大きな荷重を必
要とせずにでき、コスト低減ができ、軸方向及び回転方
向のガタを抑止することができる等の効果を奏する。According to the first aspect of the present invention, a solid shaft A having an external gear-shaped shaft portion 1 and a small-diameter shaft portion 2 formed from the shaft end side and an internal gear-shaped portion 6 are formed. Crimping deformation that protrudes inward at a first position P 1 and a second position P 2 which are set at appropriate intervals in the axial direction of the shank 6 and shorter than the axial length of the external gear shaft 1. A hollow shaft B in which a portion 7 is formed, and the internal gear-shaped portion 6 is attached to the external gear-shaped shaft portion 1 of the solid shaft A.
Firstly, in the steering device, the two shaft members are firmly connected to each other by the connecting structure of the steering shafts in which the caulking deformation portions 7 at the first and second positions P 1 and P 2 are engaged in a pressed state. When fixing, there is an effect that a large load is not required, the cost can be reduced, and the play in the axial direction and the rotational direction can be suppressed.
【００３５】上記効果を詳述すると、中空軸Ｂの第１位
置Ｐ1 及び第２位置Ｐ2 に形成したカシメ変形部７を設
けるものであるために、軸方向に沿って安定した連結と
することができる。さらに、外歯車状軸部１と内歯車状
部６との噛み合いにより、周方向の固定も強固にするこ
とができる。またステアリングシャフトの連結構造であ
るため回転方向のガタが抑止され操舵フィーリングを損
なうことがない。The above-mentioned effect will be described in detail. Since the caulking deformation portions 7 formed at the first position P 1 and the second position P 2 of the hollow shaft B are provided, the connection is stable along the axial direction. be able to. Further, the engagement between the external gear-shaped shaft portion 1 and the internal gear-shaped portion 6 can enhance the fixing in the circumferential direction. In addition, since the steering shaft is connected, play in the rotation direction is suppressed, and the steering feeling is not impaired.
【００３６】次に、請求項２の発明は、請求項１におい
て、前記第１及び第２位置Ｐ1 ，Ｐ 2 では、それぞれの
周方向に沿ってカシメ変形部７が等間隔に複数形成され
てなるステアリングシャフトの連結構造としたことによ
り、中実軸Ａの外歯車状軸部１の軸方向の２箇所だけで
なく、その２箇所の周方向において、複数のカシメ変形
部７，７，…により食付き状態となり、その連結固定の
強度を大きくすることができる。Next, a second aspect of the present invention is directed to the first aspect.
And the first and second positions P1, P TwoThen, for each
A plurality of caulking deformation portions 7 are formed at equal intervals along the circumferential direction.
The steering shaft connection structure
Only at two locations in the axial direction of the external gear-shaped shaft portion 1 of the solid shaft A.
And in the two circumferential directions, multiple caulking deformations
The parts 7, 7,.
Strength can be increased.
【００３７】次に、請求項３の発明は、軸端側から外歯
車状軸部１及び細径軸部２が形成された中実軸Ａと、内
歯車状部６が形成された中空軸Ｂとからなり、前記中実
軸Ａの外歯車状軸部１と細径軸部２とが前記中空軸Ｂの
内歯車状部６に挿入され、該中空軸Ｂの内歯車状部６に
前記外歯車状軸部１の軸方向より短い適宜の間隔をおい
て前記第１及び第２位置Ｐ1 ，Ｐ2 が設定され、該第１
及び第２位置Ｐ1 ，Ｐ 2 は、前記細径軸部２領域に位置
させ、前記第１及び第２位置Ｐ1 ，Ｐ2 に内歯車状部６
の内方に突出するカシメ変形部７が形成され、次いで前
記中実軸Ａと中空軸Ｂとを軸方向に引き離し，前記カシ
メ変形部７が外歯車状軸部１に係合してなるステアリン
グシャフトの連結方法としたことにより、中実軸Ａと中
空軸Ｂとの連結固定作業を効率的に行うことができ、強
固なる連結固定とすることができる。Next, according to a third aspect of the present invention, the external teeth are formed from the shaft end side.
A solid shaft A on which a vehicle-shaped shaft portion 1 and a small-diameter shaft portion 2 are formed;
A hollow shaft B on which a gear-shaped portion 6 is formed;
The external gear-shaped shaft portion 1 and the small-diameter shaft portion 2 of the shaft A
Inserted into the internal gear-shaped portion 6 and inserted into the internal gear-shaped portion 6 of the hollow shaft B
An appropriate interval shorter than the axial direction of the external gear-shaped shaft portion 1 is provided.
The first and second positions P1, PTwoIs set, and the first
And the second position P1, P TwoIs located in the small-diameter shaft portion 2 region.
And the first and second positions P1, PTwoInternal gear 6
The caulking deformation portion 7 protruding inward is formed.
The solid shaft A and the hollow shaft B are separated from each other in the axial direction.
Stearin in which female deformation portion 7 is engaged with external gear-shaped shaft portion 1
The solid shaft A and the middle shaft
The connection and fixing work with the empty shaft B can be performed efficiently,
It can be rigidly connected and fixed.
【００３８】上記効果を詳述すると、第１位置Ｐ1 及び
第２位置Ｐ2 にカシメ変形部７を形成するときには、前
記中空軸Ｂの細径軸部２にて行うことになるので、外歯
車状軸部１からカシメ変形部７の形成時になんら抵抗を
受けることなく、容易に形成することができる。さら
に、カシメ変形部７を形成してから中空軸Ｂを中実軸Ａ
から引き離す方向に移動させるときには、第２位置Ｐ2
に形成されたカシメ変形部７から外歯車状軸部１に移動
し、第２位置Ｐ2 のカシメ変形部７が外歯車状軸部１の
軸端位置に近接してから、第１位置Ｐ1 のカシメ変形部
７が外歯車状軸部１に移動する。The effect is described in detail. When forming the caulked deformation portion 7 at the first position P 1 and the second position P 2 , the caulking deformation portion 7 is formed at the small diameter shaft portion 2 of the hollow shaft B. When the caulking deformation portion 7 is formed from the gear-shaped shaft portion 1, it can be easily formed without receiving any resistance. Further, after the caulking deformation portion 7 is formed, the hollow shaft B is connected to the solid shaft A.
When moving in the direction to separate from the second position P 2
Moves from the caulked deformation portion 7 formed to the external gear-shaped shaft portion 1 to the external gear-shaped shaft portion 1, and the caulked deformed portion 7 at the second position P 2 approaches the shaft end position of the external gear-shaped shaft portion 1. The one caulking deformation portion 7 moves to the external gear-shaped shaft portion 1.
【００３９】したがって、中空軸Ｂに第１位置Ｐ1 及び
第２位置Ｐ2 の２箇所にそれぞれ形成されたカシメ変形
部７が中実軸Ａの外歯車状軸部１への食い付き移動を同
時にすることがないので、前記中実軸Ａから中空軸Ｂを
引き離す方向に移動させて、外歯車状軸部１の軸方向両
端箇所でカシメ変形部７による食いつき状態の連結固定
を行うときにも、大きな荷重によって食付き加工をする
必要がなく、したがって大荷重加工による中実軸Ａ及び
中空軸Ｂへの不必要な変形を防止することができる。Therefore, the caulking deformation portions 7 formed at the two positions of the hollow shaft B at the first position P 1 and the second position P 2 respectively move the solid shaft A to bite the external gear-shaped shaft portion 1. Since it is not performed at the same time, when the hollow shaft B is moved away from the solid shaft A in the direction in which the hollow shaft B is separated from the solid shaft A, the caulked deformation portion 7 performs connection and fixing of the biting state at both axial ends of the external gear-shaped shaft portion 1. Also, it is not necessary to perform biting processing by a large load, and therefore, unnecessary deformation of the solid shaft A and the hollow shaft B due to the large load processing can be prevented.
【００４０】この中実軸Ａの細径軸部２側で形成された
第１位置Ｐ1 のカシメ変形部７は、先に外歯車状軸部１
に食い付いたカシメ変形部７の軸径方向、周方向のカシ
メ状態を安定させるとともに、第２位置Ｐ2 のカシメ変
形部７の外歯車状軸部１に対する移動を案内しつつ、前
記外歯車状軸部１の山，谷との食付き精度を確保でき、
安定かつ強固なカシメ変形部７の食い付き状態とするこ
とができる。The caulking deformation portion 7 at the first position P 1 formed on the small-diameter shaft portion 2 side of the solid shaft A is first provided with the external gear-shaped shaft portion 1.
While stabilizing the crimping state of the caulking deforming portion 7 in the axial direction and the circumferential direction, and guiding the movement of the caulking deforming portion 7 at the second position P 2 with respect to the external gear-shaped shaft portion 1, Biting accuracy between the peaks and valleys of the shaft part 1 can be secured,
A stable and strong caulking deformation portion 7 can be brought into a biting state.
【００４１】なお、前記中実軸Ａの細径軸部２は、ステ
アリングシャフトのヒューズ部としての役目もなすこと
ができる。即ち、衝突時の衝撃において、細径軸部２が
破損し、この部位で衝撃エネルギが遮断され、一次衝撃
を運転者へ伝えることを防止することができるものであ
る。The small-diameter shaft portion 2 of the solid shaft A can also serve as a fuse portion of the steering shaft. That is, the small-diameter shaft portion 2 is broken by the impact at the time of the collision, and the impact energy is cut off at this portion, so that it is possible to prevent the primary impact from being transmitted to the driver.
【００４２】次に、請求項４の発明は、請求項３におい
て、前記外歯車状軸部１の細径軸部２側寄りの適宜の位
置に周方向に沿って溝部３が形成され、前記第２位置Ｐ
2 は前記溝部３の位置に一致させて前記カシメ変形部７
が形成されてなることを特徴とするステアリングシャフ
トの連結方法としたことにより、中実軸Ａと中空軸Ｂと
の連結固定作業をより一層効率的に行うことができる。Next, according to a fourth aspect of the present invention, in the third aspect, the groove portion 3 is formed along the circumferential direction at an appropriate position near the small-diameter shaft portion 2 side of the external gear-shaped shaft portion 1. Second position P
2 corresponds to the position of the groove 3 and the caulking deformation portion 7
Is formed, and the connection and fixing operation of the solid shaft A and the hollow shaft B can be performed more efficiently.
【００４３】上記効果を詳述すると、中空軸Ｂが前記中
実軸Ａから外れる方向に移動させるときに第２位置Ｐ2
に形成されたカシメ変形部７は、前記溝部３の位置から
外歯車状軸部１に移動し、そのままカシメ変形部７が外
歯車状軸部１をしごくようにして外歯車状軸部１の軸端
側に向かう。前記溝部３は、外歯車状軸部１の領域に形
成されているので、溝部３に対応して形成されたカシメ
変形部７が外歯車状軸部１に沿って、該外歯車状軸部１
の軸方向端部に到達する距離を少なくすることができ、
作業効率を向上させるものである。The above effect will be described in detail. When the hollow shaft B is moved in a direction deviating from the solid shaft A, the second position P 2
The caulking deformation part 7 formed on the outer gear-shaped shaft part 1 moves from the position of the groove 3 to the external gear-shaped shaft part 1, and the caulking deformation part 7 squeezes the external gear-shaped shaft part 1 as it is. Head toward the shaft end. Since the groove 3 is formed in the region of the external gear shaft 1, the caulking deformation portion 7 formed corresponding to the groove 3 is formed along the external gear shaft 1. 1
The distance to reach the axial end of the
This improves work efficiency.
【００４４】請求項５の発明は、軸端側から外歯車状軸
部１と，該外歯車状軸部１のほぼ中間且つ軸周方向に形
成された溝部３と，前記外歯車状軸部１の軸端に形成さ
れた細径軸部２とからなる中実軸Ａと、内歯車状部６が
形成され，該内歯車状部６の軸方向で且つ前記外歯車状
軸部１の軸方向長さより短い適宜の間隔をおいて設定さ
れた第１位置Ｐ1 及び第２位置Ｐ2 にて内方に突出する
カシメ変形部７が形成され，前記第１位置Ｐ1 と第２位
置Ｐ2 の中間で前記外歯車状軸部１の溝部３箇所に対応
する位置を第３位置Ｐ3 とし，該第３位置Ｐ3 に中間カ
シメ変形部８が形成された中空軸Ｂとからなり、前記中
実軸Ａの外歯車状軸部１に前記内歯車状部６の第１及び
第２位置Ｐ1 ，Ｐ2 のカシメ変形部７が押圧状態で係合
され、前記第３位置Ｐ3 の中間カシメ変形部８が前記溝
部３に係合されてなるステアリングシャフトの連結構造
としたことにより、前記中実軸Ａと中空軸Ｂとをより一
層強固に連結固定することができる。According to a fifth aspect of the present invention, there is provided an external gear-shaped shaft portion, a groove portion formed substantially in the middle of the external gear-shaped shaft portion and in a circumferential direction from the shaft end side, and the external gear-shaped shaft portion. A solid shaft A comprising a small-diameter shaft portion 2 formed at one shaft end and an internal gear-shaped portion 6 are formed. crimping deformation portion 7 in the axial direction first position P 1 and the second position P 2, which is set at a short appropriate intervals than the length protruding inwardly are formed, the first position P 1 and the second position the position corresponding to the groove 3 positions of the outer toothed shank 1 in the middle of the P 2 and the third position P 3, consists of a hollow shaft B intermediate caulking deformable portion 8 in the third position P 3 is formed The caulking deformation portions 7 at the first and second positions P 1 and P 2 of the internal gear portion 6 are engaged with the external gear shaft portion 1 of the solid shaft A in a pressed state, and the third position P Three The intermediate shaft caulking deformation portion 8 is engaged with the groove 3 to form a steering shaft connection structure, so that the solid shaft A and the hollow shaft B can be more strongly connected and fixed.
【００４５】上記効果を詳述すると、前記中空軸Ｂに
は、第１位置Ｐ1 及び第２位置Ｐ2 に形成されたカシメ
変形部７に加えて、その第１位置Ｐ1 と第２位置Ｐ2 と
の間に第３位置Ｐ3 が設定され、該第３位置Ｐ3 に中間
カシメ変形部８が形成され、該中間カシメ変形部８が中
空軸Ｂが内方に突出して、前記中実軸Ａの溝部３に係合
するようにしたので、強固な連結固定状態を得ることが
できる。この中空軸Ｂの中間カシメ変形部８が中実軸Ａ
の溝部３に係合する構造は、凹凸タイプの嵌合状態とな
ることから、前記カシメ変形部７のみによる押圧状態の
場合に比較して、より一層，高い抜け止め構造にするこ
とができる。The above-mentioned effect will be described in detail. In addition to the caulking deformed portion 7 formed at the first position P 1 and the second position P 2 , the hollow shaft B has the first position P 1 and the second position P 1 . third position P 3 is set between the P 2, the intermediate caulking deformation portion 8 in the third position P 3 is formed, the intermediate caulking deformation portion 8 is hollow axis B and protrudes inward in the abovementioned Since the engagement is made with the groove 3 of the real shaft A, a strong connection and fixed state can be obtained. The intermediate caulked deformation portion 8 of the hollow shaft B is a solid shaft A
Since the structure that engages with the groove portion 3 is a concave-convex type fitting state, a higher retaining structure can be achieved as compared to the case where the crimping deformation portion 7 is pressed alone.
【００４６】請求項６の発明は、請求項５において、前
記第１位置Ｐ1 及び第２位置Ｐ2 には軸周方向に複数の
カシメ変形部７，７，…が形成され、前記第３位置Ｐ3
には軸周方向に沿って複数の中間カシメ変形部８が形成
され、且つ前記第３位置Ｐ3の中間カシメ変形部８は前
記第１位置Ｐ1 ，第２位置Ｐ2 に形成されたカシメ変形
部７とは相互にズレた位置としてなるステアリングシャ
フトの連結構造としたことにより、前記中実軸Ａと中空
軸Ｂとの連結固定状態を安定したものとし、さらに前記
中空軸Ｂにおいて前記カシメ変形部７と中間カシメ変形
部８が適宜に分散した位置となり、カシメ成形時におけ
る歪が一定箇所に集中しないようにすることができる利
点もある。According to a sixth aspect of the present invention, in the fifth aspect, the first position P 1 and the second position P 2 are formed with a plurality of caulking deformation portions 7, 7,. Position P 3
Along the axial circumferential direction into a plurality of intermediate caulking deformation portion 8 is formed, and the third intermediate caulking deformation section 8 the first position P 1 position P 3, caulking formed in the second position P 2 The connecting structure of the steering shaft which is displaced from the deforming portion 7 makes the connection fixed state between the solid shaft A and the hollow shaft B stable, and furthermore, the caulking at the hollow shaft B There is also an advantage that the deformed portion 7 and the intermediate caulked deformed portion 8 are located at appropriately dispersed positions, so that distortion during caulking can be prevented from concentrating at a certain location.
【００４７】上記効果を詳述すると、第１位置Ｐ1 及び
第２位置Ｐ2 のカシメ変形部７，７，…を軸周方向に複
数箇所（たとえば３箇所）に均等に設けた後に、前記第
３位置Ｐ3 の中間カシメ変形部８，８，…を軸周方向に
沿って複数箇所（たとえば３箇所）に均等に設けること
で、前記第１位置Ｐ1 と第２位置Ｐ2 の軸周方向におけ
る隣接するカシメ変形部７，７間のカシメ変形されてい
ない部分，すなわち未カシメ成形部位に前記中間カシメ
変形部８，８，…が位置することとなる。これによっ
て、カシメ変形部７と中間カシメ変形部８とは軸方向及
び軸周方向において相互に距離をおいて存在しているの
で、カシメ成形による歪みが相互に及ぶことがなく中空
軸Ｂの強度を劣化することがない。しかも、これらカシ
メ変形部７及び中間カシメ変形部８が形成される中空軸
Ｂは、その軸径の大きなものでなくとも、軸周方向にカ
シメ成形箇所を多数設けることができ、これによって軽
量，小型化を実現することができ、しかもカシメによる
連結固定の強度を損なうことなく、連結構造を安定させ
ることができる。[0047] More specifically the effect, the first position P 1 and the second position P 2 of the caulking deformation portions 7, ... after uniformly provided at a plurality of locations to Jikushu direction (e.g. three), the intermediate caulking deformation portions 8 of the third position P 3, ... of the evenly provided that a plurality of positions (e.g., three) along the Jikushu direction, the first position P 1 and the second position P 2 axes The intermediate caulking deformation portions 8, 8,... Are located at portions where the caulking deformation portions 7, 7 adjacent to each other in the circumferential direction are not caulked, that is, at unformed caulking portions. Accordingly, the caulking deformed portion 7 and the intermediate caulking deformed portion 8 are present at a distance from each other in the axial direction and the axial circumferential direction. Does not deteriorate. In addition, the hollow shaft B in which the caulking deformation portion 7 and the intermediate caulking deformation portion 8 are formed can have a large number of caulking portions in the circumferential direction of the shaft, even if the shaft diameter is not large. The miniaturization can be realized, and the connection structure can be stabilized without impairing the strength of the connection fixation by caulking.
【００４８】請求項７の発明は、軸端側から外歯車状軸
部１と，該外歯車状軸部１のほぼ中間且つ軸周方向に形
成された溝部３と，前記外歯車状軸部１の軸端に形成さ
れた細径軸部２とからなる中実軸Ａと、内歯車状部６が
形成された中空軸Ｂとからなり、前記中実軸Ａの外歯車
状軸部１と細径軸部２とが前記中空軸Ｂの内歯車状部６
に挿入され、該中空軸Ｂの内歯車状部６に前記外歯車状
軸部１の軸方向より短い適宜の間隔をおいて第１位置Ｐ
1 及び第２位置Ｐ2 が設定され、前記第１位置Ｐ1 及び
第２位置Ｐ2 は、前記細径軸部２領域に位置させ、前記
第１位置Ｐ1 及び第２位置Ｐ2 に内歯車状部６の内方に
突出するカシメ変形部７が形成され、次いで前記中実軸
Ａと中空軸Ｂとを軸方向に引き離し前記カシメ変形部７
が外歯車状軸部１に押圧状態で係合させ、その第１位置
Ｐ1 及び第２位置Ｐ2 の中間にて第３位置Ｐ3 が設定さ
れ、該第３位置Ｐ3 は前記中実軸Ａの溝部３に位置し、
中空軸Ｂの内歯車状部６を内方に突出する中間カシメ変
形部８が形成され、前記外歯車状軸部１に係合されてな
るステアリングシャフトの連結方法としたことにより、
中実軸Ａと中空軸Ｂとをより一層，強固なる連結固定と
することができるとともに、その連結固定作業の極めて
効率的に行うことができ、According to a seventh aspect of the present invention, there is provided an external gear-shaped shaft portion 1, a groove portion 3 formed substantially in the middle of the external gear-shaped shaft portion 1 in a circumferential direction from the shaft end side, and the external gear-shaped shaft portion. 1 comprises a solid shaft A comprising a small-diameter shaft portion 2 formed at the shaft end and a hollow shaft B having an internal gear-shaped portion 6 formed therein. And the small-diameter shaft portion 2 are formed by the internal gear-shaped portion 6 of the hollow shaft B.
At the first position P at an appropriate interval shorter than the axial direction of the external gear-shaped shaft portion 1 on the internal gear-shaped portion 6 of the hollow shaft B.
The first position P 1 and the second position P 2 are set, and the first position P 1 and the second position P 2 are located in the area of the small-diameter shaft portion 2 and are located inside the first position P 1 and the second position P 2 . A caulking deforming portion 7 is formed to protrude inward of the gear-shaped portion 6, and then the solid shaft A and the hollow shaft B are separated in the axial direction to form the caulking deforming portion 7.
Is engaged with the external gear-shaped shaft portion 1 in a pressed state, and a third position P 3 is set between the first position P 1 and the second position P 2 , and the third position P 3 is the solid position. Located in groove 3 of axis A,
An intermediate caulking deforming portion 8 that protrudes the inner gear-shaped portion 6 of the hollow shaft B inward is formed, and the method of connecting the steering shaft engaged with the outer gear-shaped shaft portion 1 enables
The solid shaft A and the hollow shaft B can be more firmly connected and fixed, and the connecting and fixing work can be performed extremely efficiently.
【００４９】上記効果を詳述すると、前記中実軸Ａを前
記中空軸Ｂに一旦，深く挿入し、第１位置Ｐ1 及び第２
位置Ｐ2 にそれぞれカシメ変形部７を形成してから中空
軸Ｂが前記中実軸Ａから外れる方向に移動させるときに
第２位置Ｐ2 に形成されたカシメ変形部７は、前記溝部
３の位置から外歯車状軸部１に移動するものであり、前
記溝部３が外歯車状軸部１のほぼ中間位置に形成されて
いるので、カシメ変形部７が溝部３から外歯車状軸部１
の所定位置に到達する距離は短くて済む。The effect is described in detail. The solid shaft A is inserted deeply into the hollow shaft B once, and the first position P 1 and the second position P 1
When the hollow shaft B is moved in the direction deviating from the solid axis A after forming the caulking deforming portions 7 at the respective positions P 2 , the caulking deforming portions 7 formed at the second position P 2 From the position to the external gear-shaped shaft portion 1. Since the groove portion 3 is formed at a substantially intermediate position of the external gear-shaped shaft portion 1, the caulking deformation portion 7 is moved from the groove portion 3 to the external gear-shaped shaft portion 1.
The distance required to reach the predetermined position is short.
【００５０】さらに、中実軸Ａと中空軸Ｂとを所定の位
置に設定した後、前記第３位置Ｐ3に中間カシメ変形部
８を形成するので、該中間カシメ変形部８が中空軸Ｂの
内周側に膨出する工程で、溝部３内に入り込むように形
成され、比較的少ない抵抗で形成することができ、且つ
中実軸Ａと中空軸Ｂとの軸方向における連結状態は極め
て強固なものにできる。[0050] Moreover, after setting a solid shaft A and the hollow shaft B in position, the and the third forms an intermediate caulking deformation portion 8 to the position P 3, the intermediate caulking deformation portion 8 hollow shaft B Is formed so as to enter the groove 3 in the step of bulging to the inner peripheral side, can be formed with relatively little resistance, and the connection state between the solid shaft A and the hollow shaft B in the axial direction is extremely high. Can be strong.
【図１】（Ａ）は本発明のステアリングシャフトの全体
を示す側面図 （Ｂ）は（Ａ）の一部断面にした要部拡大図FIG. 1A is a side view showing the entirety of a steering shaft of the present invention. FIG. 1B is an enlarged view of a main part in a partial cross section of FIG.
【図２】（Ａ）は本発明の中実軸と中空軸の要部斜視図 （Ｂ）は中実軸と中空軸の連結状態の斜視図 （Ｃ）は中空軸のカシメ変形部部分の拡大斜視図2A is a perspective view of a main part of a solid shaft and a hollow shaft of the present invention, FIG. 2B is a perspective view of a connected state of the solid shaft and the hollow shaft, and FIG. Enlarged perspective view
【図３】（Ａ）は本発明のカシメ変形部の数を周方向に
３個としたタイプを示す要部断面図 （Ｂ）はカシメ変形部の数を周方向に２個としたタイプ
を示す要部断面図 （Ｃ）はカシメ変形部の数を周方向に１個としたタイプ
を示す要部断面図FIG. 3A is a cross-sectional view of a main part showing a type in which the number of caulking deformed portions of the present invention is three in the circumferential direction. FIG. 3B is a type in which the number of caulking deformed portions is two in the circumferential direction. (C) is a cross-sectional view of a main part showing a type in which the number of caulking deformed parts is one in the circumferential direction.
【図４】（Ａ）は本発明の中実軸を中空軸に挿入しよう
とする状態図 （Ｂ）は中実軸を中空軸に挿入した状態図 （Ｃ）は中空軸の第１位置及び第２位置にカシメ変形部
を形成した状態図 （Ｄ）は連結固定が完了した状態図FIG. 4 (A) is a diagram showing a state where a solid shaft of the present invention is to be inserted into a hollow shaft. FIG. 4 (B) is a diagram showing a state where a solid shaft is inserted into a hollow shaft. A state diagram in which the swaging part is formed at the second position. (D) is a state diagram in which the connection and fixing are completed.
【図５】（Ａ）は本発明のカシメ変形部が外歯車状軸部
に食い込む前の拡大した状態図 （Ｂ）はカシメ変形部が外歯車状軸部に食い込み始めた
拡大した状態図 （Ｃ）は連結固定が完了した拡大した状態図FIG. 5 (A) is an enlarged view of a state before the crimping portion of the present invention bites into the external gear shaft portion. FIG. C) Enlarged state diagram after connection and fixation are completed.
【図６】（Ａ），（Ｂ），（Ｃ），（Ｄ）は本発明の外
歯車状軸部に溝部が形成されないタイプの工程図6 (A), 6 (B), 6 (C) and 6 (D) are process diagrams of a type in which a groove is not formed in an external gear-shaped shaft portion of the present invention.
【図７】（Ａ）は第２実施形態における中実軸と中空軸
の要部斜視図 （Ｂ）は第２実施形態における中実軸と中空軸の連結状
態の斜視図FIG. 7A is a perspective view of a main part of a solid shaft and a hollow shaft according to a second embodiment, and FIG. 7B is a perspective view of a connected state of a solid shaft and a hollow shaft according to the second embodiment.
【図８】第２実施形態における中空軸のカシメ変形部及
び中間カシメ変形部箇所の拡大断面斜視図FIG. 8 is an enlarged cross-sectional perspective view of a caulked deformation portion and an intermediate caulked deformed portion of the hollow shaft according to the second embodiment.
【図９】（Ａ）は第２実施形態において中空軸の中間カ
シメ変形部における部分の拡大縦断側面図 （Ｂ）は（Ａ）のＸ1 −Ｘ1 矢視断面図 （Ｃ）は中間カシメ変形部を軸周方向に３箇所形成した
縦断正面図 （Ｄ）は中間カシメ変形部を軸周方向に２箇所形成した
縦断正面図 （Ｅ）は中間カシメ変形部を軸周方向に１箇所形成した
縦断正面図9A is an enlarged vertical sectional side view of a portion of the hollow shaft at an intermediate caulking deformation portion in the second embodiment. FIG. 9B is a cross-sectional view taken along the line X 1 -X 1 of FIG. 9A. (D) A longitudinal cross-sectional front view in which three deformed portions are formed in the axial circumferential direction. (D) A longitudinal cross-sectional front view in which two intermediate caulked deformed portions are formed in the axial circumferential direction. (E) An intermediate caulked deformed portion is formed in one axial circumferential direction. Vertical front view
【図１０】（Ａ）は第２実施形態においてカシメ変形部
と中間カシメ変形部とを軸周方向に位置をズラして形成
した状態を示す要部側面図 （Ｂ）は（Ａ）の第１位置，第２位置の２個所における
Ｘ2 −Ｘ2 矢視断面図 （Ｃ）は（Ａ）のＸ3 −Ｘ3 矢視断面図FIG. 10A is a side view of a main part showing a state in which a caulking deformed portion and an intermediate caulking deformed portion are displaced in the axial circumferential direction in the second embodiment, and FIG. 1 position, X 2 -X 2 cross-sectional view taken in the two positions of the second position (C) is X 3 -X 3 cross-sectional view along a line (a)
【図１１】（Ａ）は第２実施形態において中実軸を中空
軸に挿入しようとする状態図 （Ｂ）は中実軸を中空軸に挿入した状態図 （Ｃ）は中空軸の第１位置及び第２位置にカシメ変形部
を形成した状態図 （Ｄ）は中実軸と中空軸とを所定位置に設定し状態図 （Ｅ）は第３位置に中間カシメ変形部を形成して連結固
定が完了した状態図11A is a diagram showing a state in which a solid shaft is to be inserted into a hollow shaft in the second embodiment. FIG. 11B is a diagram showing a state in which a solid shaft is inserted into a hollow shaft. FIG. (D) is a state in which the solid shaft and the hollow shaft are set at predetermined positions, and (E) is a state in which an intermediate swaging part is formed at the third position. State diagram after fixing is completed
【図１２】（Ａ）は第２実施形態においてカシメ変形部
が外歯車状軸部に食い込む前の拡大した状態図 （Ｂ）は第２実施形態においてカシメ変形部が外歯車状
軸部に食い込み始めた拡大した状態図 （Ｃ）は第２実施形態においてカシメ変形部が外歯車状
軸部の第１位置及び第２位置への食い込みを完了したこ
とを示す拡大した状態図 （Ｄ）は第３位置に中間カシメ変形部が食い込んだこと
を示す拡大した状態図FIG. 12A is an enlarged view showing a state before the swaging deformed portion bites into the external gear-shaped shaft portion in the second embodiment. FIG. 12B is a diagram showing the swaging deformed portion biting into the external gear-shaped shaft portion in the second embodiment. The enlarged state diagram that has begun (C) is an enlarged state diagram showing that the caulking deformed portion has completed biting the external gear-shaped shaft portion into the first position and the second position in the second embodiment. Enlarged state diagram showing that the intermediate caulking deformed part bites into three positions
Ａ…中実軸 Ｂ…中空軸 １…外歯車状軸部 ２…細径軸部 ６…内歯車状部 ７…カシメ変形部 ８…中間カシメ変形部 Ｐ1 …第１位置 Ｐ2 …第２位置 Ｐ3 …第３位置A ... Solid shaft B ... hollow shaft 1 ... external gear shaped shank 2 ... small diameter shaft portion 6 ... internal gear shaped portion 7 ... caulking deformation portion 8 ... intermediate caulking deformation portion P 1 ... the first position P 2 ... second Position P 3 ... third position
───────────────────────────────────────────────────── フロントページの続き (72)発明者 下山 直樹 群馬県桐生市広沢町１丁目2757番地 株式 会社山田製作所内 Ｆターム(参考） 3D030 DF01 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Naoki Shimoyama 1-2757 Hirosawa-cho, Kiryu-shi, Gunma F-term in Yamada Manufacturing Co., Ltd. (reference) 3D030 DF01
Claims (7)
形成された中実軸と、内歯車状部が形成され，該内歯車
状部の軸方向で且つ前記外歯車状軸部の軸方向長さより
短い適宜の間隔をおいて設定された第１位置及び第２位
置にて内方に突出するカシメ変形部が形成された中空軸
とからなり、前記中実軸の外歯車状軸部に前記内歯車状
部の第１及び第２位置のカシメ変形部が押圧状態で係合
してなることを特徴とするステアリングシャフトの連結
構造。1. A solid shaft having an external gear-shaped shaft portion and a small-diameter shaft portion formed from the shaft end side, and an internal gear-shaped portion formed in the axial direction of the internal gear-shaped portion and the external gear-shaped portion. A hollow shaft formed with a caulked deformation portion projecting inward at a first position and a second position set at appropriate intervals shorter than the axial length of the shaft portion; A coupling structure for a steering shaft, wherein a caulking deformed portion at the first and second positions of the internal gear portion is engaged with the gear-shaped shaft portion in a pressed state.
置では、それぞれの周方向に沿ってカシメ変形部が等間
隔に複数形成されてなることを特徴とするステアリング
シャフトの連結構造。2. The steering shaft connection structure according to claim 1, wherein a plurality of caulking deformation portions are formed at equal intervals along the circumferential direction at the first and second positions.
形成された中実軸と、内歯車状部が形成された中空軸と
からなり、前記中実軸の外歯車状軸部と細径軸部とが前
記中空軸の内歯車状部に挿入され、該中空軸の内歯車状
部に前記外歯車状軸部の軸方向より短い適宜の間隔をお
いて前記第１及び第２位置が設定され、該第１及び第２
位置は、前記細径軸部領域に位置させ、前記第１及び第
２位置に内歯車状部の内方に突出するカシメ変形部が形
成され、次いで前記中実軸と中空軸とを軸方向に引き離
し，前記カシメ変形部が外歯車状軸部に係合してなるこ
とを特徴とするステアリングシャフトの連結方法。3. A solid shaft in which an external gear-shaped shaft portion and a small-diameter shaft portion are formed from a shaft end side, and a hollow shaft in which an internal gear-shaped portion is formed. A shaft portion and a small-diameter shaft portion are inserted into the internal gear-shaped portion of the hollow shaft, and the first gear-shaped portion of the hollow shaft is provided at an appropriate interval shorter than the axial direction of the external gear-shaped shaft portion. And the second position are set, and the first and second positions are set.
The position is located in the small-diameter shaft portion region, and a caulking deforming portion projecting inward of the internal gear-shaped portion is formed in the first and second positions, and then the solid shaft and the hollow shaft are axially connected. A method of connecting a steering shaft, wherein the caulking deformed portion is engaged with an external gear-shaped shaft portion.
細径軸部側寄りの適宜の位置に周方向に沿って溝部が形
成され、前記第２位置は前記溝部の位置に一致させて前
記カシメ変形部が形成されてなることを特徴とするステ
アリングシャフトの連結方法。4. A groove according to claim 3, wherein a groove is formed along the circumferential direction at an appropriate position near the small-diameter shaft of the external gear-shaped shaft, and the second position coincides with the position of the groove. Wherein the caulking deformation portion is formed.
軸部のほぼ中間且つ軸周方向に形成された溝部と，前記
外歯車状軸部の軸端に形成された細径軸部とからなる中
実軸と、内歯車状部が形成され，該内歯車状部の軸方向
で且つ前記外歯車状軸部の軸方向長さより短い適宜の間
隔をおいて設定された第１位置及び第２位置にて内方に
突出するカシメ変形部が形成され，前記第１位置と第２
位置の中間で前記外歯車状軸部の溝部箇所に対応する位
置を第３位置とし，該第３位置に中間カシメ変形部が形
成された中空軸とからなり、前記中実軸の外歯車状軸部
に前記内歯車状部の第１及び第２位置のカシメ変形部が
押圧状態で係合され、前記第３位置の中間カシメ変形部
が前記溝部に係合されてなることを特徴とするステアリ
ングシャフトの連結構造。5. An external gear-shaped shaft portion, a groove formed substantially in the middle of the external gear-shaped shaft portion and in a circumferential direction of the shaft from the shaft end side, and a thin portion formed at a shaft end of the external gear-shaped shaft portion. A solid shaft composed of a radial shaft portion and an internal gear-shaped portion are formed, and are set at appropriate intervals in the axial direction of the internal gear-shaped portion and shorter than the axial length of the external gear-shaped shaft portion. An inwardly protruding caulking portion is formed at the first position and the second position.
A position corresponding to the groove portion of the external gear-shaped shaft portion in the middle of the position is defined as a third position, and a hollow shaft having an intermediate caulked deformation portion formed at the third position. The swaging portion at the first and second positions of the internal gear portion is engaged with the shaft portion in a pressed state, and the intermediate swaging portion at the third position is engaged with the groove. Steering shaft connection structure.
２位置には軸周方向に複数のカシメ変形部が形成され、
前記第３位置には軸周方向に沿って複数の中間カシメ変
形部が形成され、且つ前記第３位置の中間カシメ変形部
は前記第１位置，第２位置に形成されたカシメ変形部と
は相互にズレた位置としてなることを特徴とするステア
リングシャフトの連結構造。6. The method according to claim 5, wherein a plurality of caulking deformation portions are formed at the first position and the second position in an axial direction.
At the third position, a plurality of intermediate caulking deformation portions are formed along the axial direction, and the intermediate caulking deformation portion at the third position is different from the caulking deformation portions formed at the first position and the second position. A connecting structure for a steering shaft, wherein the connecting structures are shifted from each other.
軸部のほぼ中間且つ軸周方向に形成された溝部と，前記
外歯車状軸部の軸端に形成された細径軸部とからなる中
実軸と、内歯車状部が形成された中空軸とからなり、前
記中実軸の外歯車状軸部と細径軸部とが前記中空軸の内
歯車状部に挿入され、該中空軸の内歯車状部に前記外歯
車状軸部の軸方向より短い適宜の間隔をおいて第１位置
及び第２位置が設定され、前記第１位置及び第２位置
は、前記細径軸部領域に位置させ、前記第１位置及び第
２位置に内歯車状部の内方に突出するカシメ変形部が形
成され、次いで前記中実軸と中空軸とを軸方向に引き離
し前記カシメ変形部が外歯車状軸部に押圧状態で係合さ
せ、その第１位置及び第２位置の中間にて第３位置が設
定され、該第３位置は前記中実軸の溝部に位置し、中空
軸の内歯車状部を内方に突出する中間カシメ変形部が形
成され、前記外歯車状軸部に係合されてなることを特徴
とするステアリングシャフトの連結方法。7. An external gear-shaped shaft portion, a groove formed substantially in the middle of the external gear-shaped shaft portion and in a circumferential direction of the shaft from the shaft end side, and a thin portion formed at a shaft end of the external gear-shaped shaft portion. A solid shaft comprising a radial shaft portion, and a hollow shaft having an internal gear-like portion formed therein, wherein the external gear-like shaft portion and the small diameter shaft portion of the solid shaft are the internal gear-like portion of the hollow shaft. The first position and the second position are set on the internal gear-shaped portion of the hollow shaft at appropriate intervals shorter than the axial direction of the external gear-shaped shaft portion, and the first position and the second position are A caulking deformation portion is formed at the first position and the second position, which is located in the small-diameter shaft portion, and protrudes inward of the internal gear-shaped portion. Then, the solid shaft and the hollow shaft are axially connected to each other. The caulking deformation portion is engaged with the external gear-shaped shaft portion in a pressed state, and a third position is set at an intermediate position between the first position and the second position. A steering shaft, wherein an intermediate caulking deformation portion is formed in the groove portion of the solid shaft and protrudes inward from the internal gear-shaped portion of the hollow shaft, and is engaged with the external gear-shaped shaft portion. Consolidation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001382287A JP3771170B2 (en) | 2001-01-25 | 2001-12-14 | Steering shaft coupling structure and coupling method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-17562 | 2001-01-25 | ||
| JP2001017562 | 2001-01-25 | ||
| JP2001382287A JP3771170B2 (en) | 2001-01-25 | 2001-12-14 | Steering shaft coupling structure and coupling method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005321241A Division JP4205714B2 (en) | 2001-01-25 | 2005-11-04 | Steering shaft connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002293252A true JP2002293252A (en) | 2002-10-09 |
| JP3771170B2 JP3771170B2 (en) | 2006-04-26 |
Family
ID=26608311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001382287A Expired - Fee Related JP3771170B2 (en) | 2001-01-25 | 2001-12-14 | Steering shaft coupling structure and coupling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3771170B2 (en) |
Cited By (7)
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| JP2006335246A (en) * | 2005-06-02 | 2006-12-14 | Nsk Ltd | Impact absorption type steering shaft and its manufacturing method |
| JP2008095965A (en) * | 2007-11-26 | 2008-04-24 | Jtekt Corp | Coupling structure of rotary shaft for automotive steering device |
| JP2012533033A (en) * | 2009-07-08 | 2012-12-20 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Locking of actuator stem and rod end bearing device used with fluid valve |
| WO2013153586A1 (en) * | 2012-04-13 | 2013-10-17 | 日本精工株式会社 | Rotation transmission mechanism and electric power steering device |
| KR101379632B1 (en) | 2012-02-03 | 2014-03-31 | 주식회사 만도 | Steering shaft for preventing assembly of reverse direction |
| CN104709338A (en) * | 2013-12-17 | 2015-06-17 | 株式会社山田制作所 | Steering device |
| WO2019027004A1 (en) * | 2017-08-04 | 2019-02-07 | 日本精工株式会社 | Shaft coupling structure and telescopic shaft |
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2001
- 2001-12-14 JP JP2001382287A patent/JP3771170B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006335246A (en) * | 2005-06-02 | 2006-12-14 | Nsk Ltd | Impact absorption type steering shaft and its manufacturing method |
| JP4622684B2 (en) * | 2005-06-02 | 2011-02-02 | 日本精工株式会社 | Shock absorbing steering shaft and method of manufacturing the same |
| JP2008095965A (en) * | 2007-11-26 | 2008-04-24 | Jtekt Corp | Coupling structure of rotary shaft for automotive steering device |
| JP4640405B2 (en) * | 2007-11-26 | 2011-03-02 | 株式会社ジェイテクト | Coupling structure of rotating shaft for automobile steering system |
| JP2012533033A (en) * | 2009-07-08 | 2012-12-20 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Locking of actuator stem and rod end bearing device used with fluid valve |
| KR101379632B1 (en) | 2012-02-03 | 2014-03-31 | 주식회사 만도 | Steering shaft for preventing assembly of reverse direction |
| WO2013153826A1 (en) * | 2012-04-13 | 2013-10-17 | 日本精工株式会社 | Rotation transmission mechanism and electric power steering device |
| WO2013153586A1 (en) * | 2012-04-13 | 2013-10-17 | 日本精工株式会社 | Rotation transmission mechanism and electric power steering device |
| JPWO2013153826A1 (en) * | 2012-04-13 | 2015-12-17 | 日本精工株式会社 | Rotation transmission mechanism and electric power steering device |
| CN104709338A (en) * | 2013-12-17 | 2015-06-17 | 株式会社山田制作所 | Steering device |
| WO2019027004A1 (en) * | 2017-08-04 | 2019-02-07 | 日本精工株式会社 | Shaft coupling structure and telescopic shaft |
| JPWO2019027004A1 (en) * | 2017-08-04 | 2020-04-02 | 日本精工株式会社 | Shaft coupling structure and telescopic shaft |
| EP3650723A4 (en) * | 2017-08-04 | 2020-05-27 | NSK Ltd. | Shaft coupling structure and telescopic shaft |
| US11022179B2 (en) | 2017-08-04 | 2021-06-01 | Nsk Ltd. | Shaft coupling structure and telescopic shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3771170B2 (en) | 2006-04-26 |
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