JPH10231845A - Connecting structure for rotary shaft - Google Patents
Connecting structure for rotary shaftInfo
- Publication number
- JPH10231845A JPH10231845A JP9035333A JP3533397A JPH10231845A JP H10231845 A JPH10231845 A JP H10231845A JP 9035333 A JP9035333 A JP 9035333A JP 3533397 A JP3533397 A JP 3533397A JP H10231845 A JPH10231845 A JP H10231845A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- hole
- section
- interior
- exterior
- 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、例えば自動車のス
テアリングシャフトとして採用される回転シャフトの結
合構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure of a rotating shaft used as, for example, a steering shaft of an automobile.
【０００２】[0002]
【従来の技術】回転シャフトの結合構造の一つとして、
略円形断面の孔部の一部を径方向の外方から内方に向け
て変形させることにより非円形断面の孔部を形成してな
る外装シャフトと、この外装シャフトの非円形断面の孔
部に軸方向へ摺動可能かつトルク伝達可能に嵌合される
軸部を一端に有する内装シャフトと、これら両シャフト
の嵌合部に介装されて圧縮状態にて前記内装シャフトの
軸部の一部分を前記外装シャフトの非円形断面の孔部の
一部分に圧接させる弾性体とを備えたものがあり、例え
ば実開平２−７１７９号公報に示されている。2. Description of the Related Art As one of coupling structures of a rotating shaft,
An exterior shaft having a non-circular cross-section formed by deforming a part of the substantially circular cross-section from the outside in the radial direction to the inside, and a non-circular cross-section of the exterior shaft An inner shaft having at one end a shaft portion fitted so as to be slidable in the axial direction and capable of transmitting torque, and a part of the shaft portion of the inner shaft in a compressed state interposed between the fitting portions of the two shafts And a resilient member that presses against a part of the hole having a non-circular cross section of the armor shaft, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-7179.
【０００３】この公報に示されている回転シャフトの結
合構造は、外装シャフトの非円形断面の孔部に端部にて
開口する軸方向の溝を形成するとともに、弾性体とし
て、軸方向にて波状で前記溝に挿入され、かつ一端にフ
ック部を有して同フック部にて前記溝の開口端部に係止
されるウエーブ板ばねを採用したものと、内装シャフト
の軸部に周方向の溝を形成するとともに、弾性体として
前記溝の深さと略同じ肉厚の弾性板でコ字形に曲げ形成
されて前記溝に埋め込まれるクリップを採用したもの
と、内装シャフトの軸部に軸方向に延びる平坦面を形成
するとともに、弾性体として軸方向で長尺の弾性板から
なり一端部を平坦面にかしめ結合にて固定したばねを採
用したものである。[0003] The connecting structure of the rotating shaft disclosed in this publication forms an axial groove opening at an end in a hole of a non-circular cross section of the exterior shaft, and also serves as an elastic body in the axial direction. A wave leaf spring which is inserted into the groove in a wavy shape and has a hook at one end and which is hooked to the opening end of the groove at the hook, And a clip which is bent into a U-shape with an elastic plate having substantially the same thickness as the depth of the groove and is embedded in the groove. And a spring formed of an elastic plate that is long in the axial direction as an elastic body and having one end fixed to the flat surface by crimping.
【０００４】[0004]
【発明が解決しようとする課題】上記した公報におい
て、弾性体としてウエーブ板ばねを採用したものにおい
ては、ウエーブ板ばねを外装シャフトの非円形断面の孔
部に組付けた状態にて内装シャフトの軸部を外装シャフ
トの孔部に嵌合することができて、組付性がよいもの
の、外装シャフトの孔部に内装シャフトの軸部がはまり
込んで収縮する途中から収縮荷重を小さくする場合に
は、内装シャフトの軸部にウエーブ板ばねを収容する凹
部を切削加工等にて形成する必要があり、製作加工性が
悪いという問題がある。In the above publication, when a wave leaf spring is employed as an elastic body, the wave leaf spring is attached to a hole having a non-circular cross-section of the exterior shaft. The shaft part can be fitted into the hole of the exterior shaft, and the assembling property is good, but when the shaft part of the interior shaft is fitted into the hole of the exterior shaft and the contraction load is reduced during the contraction, However, it is necessary to form a concave portion for accommodating the wave leaf spring in the shaft portion of the interior shaft by cutting or the like, and there is a problem that manufacturing workability is poor.
【０００５】また、弾性体としてクリップを採用したも
のにおいては、外装シャフトの非円形断面の孔部を所定
長とすることにより、外装シャフトの孔部に内装シャフ
トの軸部がはまり込んで収縮する途中から収縮荷重を小
さくすることができるものの、内装シャフトの軸部を外
装シャフトの孔部にはめ込むときに内装シャフトの軸部
に形成した周方向の溝にクリップを埋め込む必要があ
り、組付性が悪いという問題があるとともに、内装シャ
フトの軸部に周方向の溝を切削加工等にて形成する必要
があり、製作加工性が悪いという問題がある。[0005] In the case where a clip is employed as the elastic body, the hole of the non-circular cross section of the exterior shaft has a predetermined length, so that the shaft of the interior shaft fits into the hole of the exterior shaft and contracts. Although the shrinkage load can be reduced from the middle, it is necessary to embed a clip in the circumferential groove formed in the shaft of the interior shaft when fitting the shaft of the interior shaft into the hole of the exterior shaft. In addition, there is a problem that it is necessary to form a circumferential groove in the shaft portion of the interior shaft by cutting or the like, and there is a problem that manufacturing workability is poor.
【０００６】また、弾性体としてばね（長尺の弾性板）
を採用したものにおいては、外装シャフトの非円形断面
の孔部を所定長とすることにより、外装シャフトの孔部
に内装シャフトの軸部がはまり込んで収縮する途中から
収縮荷重を小さくすることができるものの、内装シャフ
トの軸部を外装シャフトの孔部にはめ込む前に、内装シ
ャフトの軸部に形成した平坦面に長尺の弾性板の一端部
をかしめ結合にて固定する必要があって製作性が悪いと
いう問題がある。また、内装シャフトの軸部に形成した
平坦面に長尺の弾性板の一端部をかしめ結合（不確実な
結合）にて固定する構成を採用しているため、外装シャ
フトの孔部に内装シャフトの軸部がはまり込んで収縮す
るときに、長尺の弾性板に作用する摺動抵抗により長尺
の弾性板が内装シャフトの軸部に形成した平坦面から外
れるおそれがあり、かかる場合には外装シャフトの孔部
と内装シャフトの軸部間に長尺の弾性板がかみ込んで収
縮する途中から収縮荷重を異常に増大するおそれがあ
る。A spring (a long elastic plate) is used as the elastic body.
In the case of adopting, the hole of the non-circular cross section of the exterior shaft has a predetermined length, so that the shrinkage load can be reduced from the middle of the shaft portion of the interior shaft being fitted into the hole of the exterior shaft and contracting. Although it is possible, before fitting the shaft of the interior shaft into the hole of the exterior shaft, it is necessary to fix one end of the long elastic plate to the flat surface formed on the shaft of the interior shaft by caulking and joining There is a problem of poor sex. In addition, since one end of the long elastic plate is fixed by caulking (uncertain connection) to the flat surface formed on the shaft of the interior shaft, the interior shaft is inserted into the hole of the exterior shaft. When the shaft part is fitted and contracts, the long elastic plate may come off the flat surface formed on the shaft part of the interior shaft due to sliding resistance acting on the long elastic plate. There is a possibility that the contraction load may be abnormally increased during the contraction of the long elastic plate between the hole of the exterior shaft and the shaft of the interior shaft.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記した各問
題に対処すべくなされたものであり、略円形断面の孔部
の一部を径方向の外方から内方に向けて変形させること
により非円形断面の孔部を形成してなる外装シャフト
と、この外装シャフトの非円形断面の孔部に軸方向へ摺
動可能かつトルク伝達可能に嵌合される軸部を一端に有
する内装シャフトと、これら両シャフトの嵌合部に介装
されて圧縮状態にて前記内装シャフトの軸部の一部分を
前記外装シャフトの非円形断面の孔部の一部分に圧接さ
せる弾性体とを備えた回転シャフトの結合構造におい
て、前記弾性体として、前記内装シャフトの軸部先端に
嵌合する嵌合部を有して前記外装シャフトの孔部に前記
内装シャフトの軸部がはまり込んで収縮するときには前
記内装シャフトの軸部と一体的に移動し前記外装シャフ
トの略円形断面の孔部に嵌入すると圧縮状態から自由状
態となる弾性体を採用したことに特徴がある。SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and a part of a hole having a substantially circular cross section is deformed from the outside in the radial direction to the inside. An interior shaft having a non-circular cross-section hole formed at the end, and an interior portion having at one end a shaft portion fitted into the non-circular cross-section hole of the exterior shaft so as to be slidable in the axial direction and capable of transmitting torque. A rotating member including a shaft, and an elastic body interposed between the fitting portions of the two shafts and pressing a part of the shaft portion of the interior shaft into a part of a hole having a non-circular cross section of the exterior shaft in a compressed state. In the coupling structure of the shaft, the elastic body has a fitting portion fitted to the tip of the shaft portion of the interior shaft, and the shaft portion of the interior shaft fits into the hole of the exterior shaft and contracts when the shaft portion contracts. Shaft of interior shaft It is characterized by employing an elastic member serving as a free state from the compressed state and is fitted into the hole portion of the substantially circular cross-section of the outer shaft to move integrally.
【０００８】[0008]
【発明の作用・効果】本発明による回転シャフトの結合
構造においては、弾性体に内装シャフトの軸部先端に嵌
合する嵌合部を設けたため、弾性体を内装シャフトの軸
部に嵌合装着した状態にて内装シャフトの軸部を外装シ
ャフトの孔部に嵌合することができて、両シャフトを良
好に組付けることができる。また、外装シャフトの孔部
に内装シャフトの軸部がはまり込んで収縮するときに
は、弾性体が内装シャフトの軸部と一体的に移動し外装
シャフトの略円形断面の孔部に嵌入すると圧縮状態から
自由状態となるため、内装シャフトの軸部の一部分が外
装シャフトの非円形断面の孔部の一部分に圧接されなく
なって、収縮途中からの収縮荷重を小さくすることがで
きる。In the joint structure of the rotary shaft according to the present invention, the elastic body is provided with a fitting portion for fitting to the tip of the shaft portion of the interior shaft, so that the elastic body is fitted and attached to the shaft portion of the interior shaft. In this state, the shaft portion of the interior shaft can be fitted into the hole of the exterior shaft, and both shafts can be satisfactorily assembled. Also, when the shaft of the interior shaft fits into the hole of the exterior shaft and contracts, when the elastic body moves integrally with the shaft of the interior shaft and fits into the hole of the substantially circular cross section of the exterior shaft, the elastic body is compressed. Since the shaft is in a free state, a part of the shaft of the interior shaft is not pressed against a part of the hole having a non-circular cross section of the exterior shaft, and the contraction load during the contraction can be reduced.
【０００９】また、弾性体に内装シャフトの軸部先端に
嵌合する嵌合部を設けて、弾性体を内装シャフトの軸部
に嵌合装着するものであるため、内装シャフトの軸部は
切削加工等が不要で冷鍛押し出し加工等にて形成するこ
とが可能なシンプルな形状でよく、安価に製作すること
ができる。Further, since the elastic body is provided with a fitting portion for fitting to the tip of the shaft of the interior shaft, and the elastic body is fitted and mounted on the shaft of the interior shaft, the shaft of the interior shaft is cut. A simple shape that does not require processing or the like and can be formed by cold forging extrusion or the like may be used, and can be manufactured at low cost.
【００１０】[0010]
【発明の実施の形態】以下に、本発明の一実施形態を図
面に基づいて説明する。図１〜図３は本発明による回転
シャフトの結合構造をステアリングシャフト１０に実施
した例を示していて、このステアリングシャフト１０に
おいては、外装シャフト１１と内装シャフト１２が軸方
向へ摺動可能かつトルク伝達可能に嵌合されており、こ
の嵌合部には板ばね１３が所定量圧縮変形された状態に
て介装されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show an example in which a connecting structure of a rotary shaft according to the present invention is applied to a steering shaft 10. In this steering shaft 10, an outer shaft 11 and an inner shaft 12 can slide in the axial direction and have a torque. It is fitted so as to be able to transmit, and a leaf spring 13 is interposed in this fitting portion in a state where it is compressed and deformed by a predetermined amount.
【００１１】外装シャフト１１は、略円形断面の孔部１
１ａの一部（先端部）を径方向の外方から内方に向けて
絞り変形させることにより形成した六角形断面の孔部１
１ｂを有するシャフトであって、図示を省略した端部に
は自在継手（図示省略）が一体的に組付けられている。
内装シャフト１２は、外装シャフト１１の六角形断面の
孔部１１ｂに軸方向へ摺動可能かつトルク伝達可能に嵌
合される六角形断面の軸部１２ａを有していて、図示を
省略した端部には自在継手（図示省略）が一体的に組付
けられており、また軸部１２ａの先端部分には板ばね１
３を収容するための一対の平坦面１２ｂが冷鍛押し出し
加工にて形成されている。The exterior shaft 11 has a hole 1 having a substantially circular cross section.
A hole 1 having a hexagonal cross-section formed by squeezing and deforming a part (tip) of the tip 1a from the outside in the radial direction to the inside.
1b, a universal joint (not shown) is integrally attached to an end not shown.
The interior shaft 12 has a hexagonal cross-section shaft portion 12a fitted into the hexagonal cross-section hole portion 11b of the exterior shaft 11 so as to be slidable in the axial direction and capable of transmitting torque. A universal joint (not shown) is integrally attached to the shaft portion, and a leaf spring 1 is attached to a tip portion of the shaft portion 12a.
3 are formed by cold forging extrusion.
【００１２】板ばね１３は、矩形の平板の周縁部１３ａ
を除いて袋状に膨出することによって介装時に周方向の
中央部となる部位に軸方向に延びる台形の凸部１３ｂを
形成するとともに、周縁部１３ａの一端から径方向に延
びた後に軸方向に延びる嵌合部１３ｃを有するもので、
単体での周縁部１３ａと嵌合部１３ｃの先端湾曲部１３
ｃ１間の寸法Ｌ１（図３参照）は内装シャフト１２の一
対の平坦面１２ｂ間の寸法Ｌ２（図１参照）より僅かに
小さく、また台形の凸部１３ｂ頂面と嵌合部１３ｃの基
部間の寸法Ｌ３（図３参照）は外装シャフト１１の六角
形断面の孔部１１ｂの寸法Ｌ４（図１参照）より僅かに
大きく形成されている。The leaf spring 13 has a peripheral portion 13a of a rectangular flat plate.
A trapezoidal protrusion 13b extending in the axial direction is formed at a portion that becomes a central portion in the circumferential direction at the time of interposition by bulging into a bag shape except for the shape, and the shaft extends radially from one end of the peripheral portion 13a. Having a fitting portion 13c extending in the
Peripheral portion 13a and tip bending portion 13 of fitting portion 13c
The dimension L1 between c1 (see FIG. 3) is slightly smaller than the dimension L2 (see FIG. 1) between the pair of flat surfaces 12b of the interior shaft 12, and between the top of the trapezoidal projection 13b and the base of the fitting portion 13c. The dimension L3 (see FIG. 3) is slightly larger than the dimension L4 (see FIG. 1) of the hole portion 11b of the hexagonal cross section of the exterior shaft 11.
【００１３】この板ばね１３においては、内装シャフト
１２の一対の平坦面１２ｂに嵌合部１３ｃにて嵌合装着
されることにより周縁部１３ａと台形の凸部１３ｂが一
方の平坦面１２ｂ上に収容された状態にて両シャフト１
１，１２の嵌合部に介装されていて、内装シャフト１２
の軸部１２ａの一部分（図２のＡ，Ｂ面）を外装シャフ
ト１１の六角形断面の孔部１１ｂの一部分（図２のＣ，
Ｄ面）に圧接させており、周縁部１３ａにて内装シャフ
ト１２の軸部１２ａに形成した平坦面１２ｂに係合し、
また凸部１３ｂにて外装シャフト１１の六角形断面の孔
部１１ｂに係合している。また板ばね１３においては、
その周縁部１３ａ全体にて両シャフト１１，１２間の伝
達荷重を受けることができるため、また膨出形成した凸
部１３ｂによって板ばね１３にリブ（周縁部１３ａに対
して変形し難く大きな荷重に耐える構成）が形成される
ため、効率よく板ばね１３のばね定数を上げることがで
きる。In this leaf spring 13, a peripheral portion 13a and a trapezoidal convex portion 13b are fitted on a pair of flat surfaces 12b of the interior shaft 12 by a fitting portion 13c so as to be on one flat surface 12b. Both shafts 1 in the housed state
The interior shaft 12
A portion of the shaft portion 12a (the surfaces A and B in FIG. 2) is part of a hole portion 11b having a hexagonal cross section of the exterior shaft 11 (the portions C and B in FIG. 2).
D surface) and engages with the flat surface 12b formed on the shaft portion 12a of the interior shaft 12 at the peripheral portion 13a,
The protrusion 13b is engaged with the hole 11b having a hexagonal cross section of the exterior shaft 11. In the leaf spring 13,
Since the entire peripheral portion 13a can receive the transmission load between the shafts 11 and 12, the bulging projection 13b causes the leaf spring 13 to have a rib (which is hardly deformed with respect to the peripheral portion 13a to a large load). Therefore, the spring constant of the leaf spring 13 can be increased efficiently.
【００１４】上記のように構成した本実施形態において
は、板ばね１３に内装シャフト１２の軸部１２ａ先端に
嵌合する嵌合部１３ｃを設けたため、図３の状態から板
ばね１３を内装シャフト１２の軸部１２ａに嵌合装着し
た状態にて内装シャフト１２の軸部１２ａを外装シャフ
ト１１の六角形断面の孔部１１ｂに嵌合することができ
て、両シャフト１１，１２を良好に組付けることができ
る。また、図１の状態から外装シャフト１１の孔部１１
ｂ，１１ａに内装シャフト１２の軸部１２ａがはまり込
んで収縮するときには、板ばね１３が内装シャフト１２
の軸部１２ａと一体的に移動し外装シャフト１１の略円
形断面の孔部１１ａに嵌入すると圧縮状態から自由状態
（外装シャフト１１と内装シャフト１２間にて圧縮され
ない状態）となるため、内装シャフト１２の軸部１２ａ
の一部分が外装シャフト１１の非円形断面の孔部１１ｂ
の一部分に圧接されなくなって、収縮途中からの収縮荷
重を小さくすることができる。なお、図１及び図２に示
した板ばね１３が外装シャフト１１の六角形断面の孔部
１１ｂに嵌合している状態での収縮荷重は、板ばね１３
の台形凸部１３ｂ頂面が外装シャフト１１の六角形断面
の孔部１１ｂを摺動することによって生じる摺動抵抗
と、内装シャフト１２の軸部１２ａの一部分（図２の
Ａ，Ｂ面）が外装シャフト１１の六角形断面の孔部１１
ｂの一部分（図２のＣ，Ｄ面）に圧接して摺動すること
によって生じる摺動抵抗と、板ばね１３の嵌合部１３ｃ
の一部が外装シャフト１１の六角形断面の孔部１１ｂを
摺動することによって生じる摺動抵抗によって決まるも
のである。In this embodiment constructed as described above, since the leaf spring 13 is provided with the fitting portion 13c fitted to the tip of the shaft portion 12a of the interior shaft 12, the leaf spring 13 is moved from the state shown in FIG. The shaft portion 12a of the interior shaft 12 can be fitted into the hexagonal cross-section hole 11b of the exterior shaft 11 in a state where the shaft portion 12a is fitted to the shaft portion 12a of the outer shaft 12, and the shafts 11, 12 can be assembled well. Can be attached. In addition, from the state of FIG.
When the shaft portion 12a of the interior shaft 12 fits into the inner shaft 12b and 11a and contracts, the leaf spring 13
When the inner shaft 12a moves integrally with the shaft portion 12a and fits into the hole 11a having a substantially circular cross section of the outer shaft 11, the inner shaft changes from a compressed state to a free state (a state where the outer shaft 11 and the inner shaft 12 are not compressed). 12 shafts 12a
Is a hole 11b having a non-circular cross-section of the exterior shaft 11.
Is no longer pressed into contact with the part, so that the contraction load during the contraction can be reduced. The contraction load when the leaf spring 13 shown in FIGS. 1 and 2 is fitted into the hexagonal cross section hole 11 b of the exterior shaft 11 is
The sliding resistance caused by the top surface of the trapezoidal convex portion 13b sliding in the hole portion 11b having the hexagonal cross section of the exterior shaft 11 and a part of the shaft portion 12a of the interior shaft 12 (surfaces A and B in FIG. 2) Hexagonal section hole 11 of exterior shaft 11
b and the sliding resistance caused by sliding by pressing against a part (C and D surfaces in FIG. 2) of the leaf spring 13 and the fitting portion 13c of the leaf spring 13.
Is determined by the sliding resistance generated by sliding a part of the hexagonal cross-section hole 11b of the exterior shaft 11.
【００１５】また、本実施形態においては、板ばね１３
に内装シャフト１２の軸部１２ａ先端に嵌合する嵌合部
１３ｃを設けて、板ばね１３を内装シャフト１２の軸部
１２ａに嵌合装着するものであるため、内装シャフト１
２の軸部１２ａは切削加工等が不要で冷鍛押し出し加工
等にて形成することが可能なシンプルな形状でよく、安
価に製作することができる。In this embodiment, the leaf spring 13 is used.
Is provided with a fitting portion 13c fitted to the tip of the shaft portion 12a of the interior shaft 12, and the leaf spring 13 is fitted and mounted on the shaft portion 12a of the interior shaft 12.
The second shaft portion 12a does not require cutting or the like, and may have a simple shape that can be formed by cold forging extrusion or the like, and can be manufactured at low cost.
【００１６】また、本実施形態においては、板ばね１３
がその周縁部１３ａにて内装シャフト１２の軸部１２ａ
に形成した平坦面１２ｂに係合しまた凸部１３ｂにて外
装シャフト１１の六角形断面の孔部１１ｂに係合する構
成であり、板ばね１３によって両シャフト１１，１２を
互いに圧接させることができるとともに、板ばね１３の
周方向縁部にて両シャフト１１，１２間の伝達荷重を受
けることができるため、外装シャフト１１と内装シャフ
ト１２の結合部での捩り剛性を十分に高くすることが可
能であり、両シャフト間にて相対回転が発生するトルク
（回転ガタ発生トルク）を十分に高くすることができ
る。また、板ばね１３は外装シャフト１１と内装シャフ
ト１２間の小さな取付スペースにコンパクトに収容する
ことができるため、両シャフト１１，１２の結合部の構
造を極めてシンプルかつコンパクトとすることができ
る。In this embodiment, the leaf spring 13 is used.
Is the shaft portion 12a of the interior shaft 12 at the peripheral portion 13a.
And a convex portion 13b engages with a hole portion 11b having a hexagonal cross section of the exterior shaft 11. The leaf spring 13 allows the two shafts 11, 12 to be pressed against each other. In addition, since the transmission load between the shafts 11 and 12 can be received at the circumferential edge of the leaf spring 13, the torsional rigidity at the joint between the exterior shaft 11 and the interior shaft 12 can be sufficiently increased. It is possible to sufficiently increase the torque (rotation play generation torque) at which relative rotation occurs between both shafts. Further, since the leaf spring 13 can be compactly accommodated in a small mounting space between the exterior shaft 11 and the interior shaft 12, the structure of the joint between the two shafts 11, 12 can be made extremely simple and compact.
【００１７】上記実施形態においては、両シャフト１
１，１２の結合部の断面形状を六角形としたが、断面形
状は非円形であればよく六角形に限定されない。また、
上記実施形態においては、両シャフト１１，１２の嵌合
部に介装されて内装シャフト１２の軸部１２ａの一部分
を外装シャフト１１の六角形断面の孔部１１ｂの一部分
に圧接させる弾性体として板ばね１３を採用したが、こ
の弾性体は板ばね１３に限定されず、適宜変更が可能で
ある。また、上記実施形態においては、板ばね１３の周
縁部１３ａを内装シャフト１２の軸部１２ａに係合させ
るとともに、凸部１３ｂを外装シャフト１１の六角形断
面の孔部１１ｂに係合させて実施したが、板ばね１３の
周縁部１３ａと凸部１３ｂの凹凸形状を逆として、板ば
ね１３の周縁部１３ａを外装シャフト１１の六角形断面
の孔部１１ｂに係合させるとともに、凸部１３ｂを内装
シャフト１２の軸部１２ａに係合させて実施することも
可能である。In the above embodiment, both shafts 1
Although the cross-sectional shape of the joints 1 and 12 is hexagonal, the cross-sectional shape is not limited to hexagonal as long as it is non-circular. Also,
In the above embodiment, a plate is used as an elastic body interposed between the fitting portions of the shafts 11 and 12 to press a part of the shaft portion 12a of the interior shaft 12 against a part of the hexagonal cross-section hole 11b of the exterior shaft 11. Although the spring 13 is employed, this elastic body is not limited to the leaf spring 13 and can be appropriately changed. In the above embodiment, the peripheral portion 13a of the leaf spring 13 is engaged with the shaft portion 12a of the interior shaft 12, and the projection 13b is engaged with the hole 11b having a hexagonal cross section of the exterior shaft 11. However, the outer peripheral portion 13a of the leaf spring 13 and the convex portion 13b are inverted, and the peripheral portion 13a of the leaf spring 13 is engaged with the hole 11b of the hexagonal cross section of the outer shaft 11, and the convex portion 13b is It is also possible to implement by engaging with the shaft portion 12a of the interior shaft 12.
【００１８】また、上記実施形態においては、矩形で平
板の周縁部１３ａを除いて袋状に膨出することによって
介装時に周方向の中央部となる部位に軸方向に延びる台
形の凸部１３ｂを形成した板ばね１３を採用して実施し
たが、台形の凸部１３ｂに代えて軸方向に延びる二つの
線状凸部（三つ以上の線状凸部であってもよい）を形成
して実施することも可能である。また、上記実施形態に
おいては、凸部１３ｂの周囲全体が周縁部１３ａに連続
する構成として本発明を実施したが、凸部１３ｂの軸方
向端部または周方向端部にスリットまたは開口が形成さ
れる構成として本発明を実施することも可能である。In the above-described embodiment, the trapezoidal protrusion 13b extending in the axial direction is formed at the center portion in the circumferential direction at the time of insertion by expanding the bag into a bag shape except for the peripheral portion 13a of the rectangular flat plate. In this embodiment, two linear protrusions (three or more linear protrusions) extending in the axial direction are formed instead of the trapezoidal protrusions 13b. It is also possible to carry out. Further, in the above-described embodiment, the present invention is implemented as a configuration in which the entire periphery of the protrusion 13b is continuous with the peripheral portion 13a. However, a slit or an opening is formed at the axial end or the circumferential end of the protrusion 13b. It is also possible to implement the present invention as a configuration having the above configuration.
【図１】 本発明による回転シャフトの結合構造の一実
施形態を示す要部縦断正面図である。FIG. 1 is a longitudinal sectional front view of an essential part showing an embodiment of a coupling structure of a rotating shaft according to the present invention.
【図２】 図１の２−２線に沿った断面図である。FIG. 2 is a sectional view taken along line 2-2 of FIG.
【図３】 図１に示した外装シャフトと内装シャフトと
板ばねの分解斜視図である。FIG. 3 is an exploded perspective view of the outer shaft, the inner shaft, and the leaf spring shown in FIG.
１０…ステアリングシャフト、１１…外装シャフト、１
１ａ…略円形断面の孔部、１１ｂ…六角形断面（非円形
断面）の孔部、１２…内装シャフト、１２ａ…軸部、１
２ｂ…平坦部、１３…板ばね（弾性体）、１３ａ…周縁
部、１３ｂ…凸部、１３ｃ…嵌合部。10: Steering shaft, 11: Exterior shaft, 1
1a: a hole having a substantially circular cross section; 11b: a hole having a hexagonal cross section (non-circular cross section); 12: an interior shaft; 12a: a shaft;
2b: flat portion, 13: leaf spring (elastic body), 13a: peripheral portion, 13b: convex portion, 13c: fitting portion.
Claims (1)
から内方に向けて変形させることにより非円形断面の孔
部を形成してなる外装シャフトと、この外装シャフトの
非円形断面の孔部に軸方向へ摺動可能かつトルク伝達可
能に嵌合される軸部を一端に有する内装シャフトと、こ
れら両シャフトの嵌合部に介装されて圧縮状態にて前記
内装シャフトの軸部の一部分を前記外装シャフトの非円
形断面の孔部の一部分に圧接させる弾性体とを備えた回
転シャフトの結合構造において、前記弾性体として、前
記内装シャフトの軸部先端に嵌合する嵌合部を有して前
記外装シャフトの孔部に前記内装シャフトの軸部がはま
り込んで収縮するときには前記内装シャフトの軸部と一
体的に移動し前記外装シャフトの略円形断面の孔部に嵌
入すると圧縮状態から自由状態となる弾性体を採用した
ことを特徴とする回転シャフトの結合構造。1. An exterior shaft having a non-circular cross-section formed by deforming a part of a substantially circular cross-section from the outside to the inside in a radial direction, and An inner shaft having at one end a shaft portion fitted into the hole having a circular cross section so as to be slidable in the axial direction and capable of transmitting torque; and the inner shaft which is interposed in a fitting portion of the two shafts and is in a compressed state. And a resilient member that presses a part of the shaft part to a part of the hole having a non-circular cross-section of the exterior shaft, wherein the elastic body is fitted to the tip of the shaft part of the interior shaft as the elastic body. When the shaft portion of the interior shaft fits into the hole portion of the exterior shaft and has a fitting portion and contracts, the shaft portion of the interior shaft moves integrally with the shaft portion of the interior shaft, and the hole portion has a substantially circular cross section of the exterior shaft. Compressed when inserted A rotating shaft coupling structure that employs an elastic body that is in a free state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9035333A JPH10231845A (en) | 1997-02-19 | 1997-02-19 | Connecting structure for rotary shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9035333A JPH10231845A (en) | 1997-02-19 | 1997-02-19 | Connecting structure for rotary shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10231845A true JPH10231845A (en) | 1998-09-02 |
Family
ID=12438918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9035333A Pending JPH10231845A (en) | 1997-02-19 | 1997-02-19 | Connecting structure for rotary shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10231845A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002022047A (en) * | 2000-07-11 | 2002-01-23 | Smc Corp | Screw-type electric throttle valve |
| KR100380244B1 (en) * | 1999-11-23 | 2003-04-14 | 주식회사 만도 | Interval compensation ASS'Y of universal joint for steering axis of car |
| DE102004006888A1 (en) * | 2004-02-12 | 2005-09-01 | Hilti Ag | suction |
| JP2007055574A (en) * | 2005-07-29 | 2007-03-08 | Fuji Kiko Co Ltd | Steering shaft |
| KR100695448B1 (en) | 2005-11-21 | 2007-03-16 | 주식회사 만도 | Slip Joint of Universal Joint Having Clearance Compensation Mechanism |
| JP2009057848A (en) * | 2007-08-30 | 2009-03-19 | Hitachi Ltd | Actuator of variable valve gear |
| KR100890753B1 (en) | 2002-12-30 | 2009-03-26 | 엘지디스플레이 주식회사 | Cleaning device for substrate |
| WO2015191309A1 (en) * | 2014-06-12 | 2015-12-17 | Borgwarner Inc. | Electric phaser coupling method |
-
1997
- 1997-02-19 JP JP9035333A patent/JPH10231845A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100380244B1 (en) * | 1999-11-23 | 2003-04-14 | 주식회사 만도 | Interval compensation ASS'Y of universal joint for steering axis of car |
| JP2002022047A (en) * | 2000-07-11 | 2002-01-23 | Smc Corp | Screw-type electric throttle valve |
| KR100890753B1 (en) | 2002-12-30 | 2009-03-26 | 엘지디스플레이 주식회사 | Cleaning device for substrate |
| DE102004006888A1 (en) * | 2004-02-12 | 2005-09-01 | Hilti Ag | suction |
| JP2007055574A (en) * | 2005-07-29 | 2007-03-08 | Fuji Kiko Co Ltd | Steering shaft |
| JP4610465B2 (en) * | 2005-07-29 | 2011-01-12 | 富士機工株式会社 | Steering shaft |
| KR100695448B1 (en) | 2005-11-21 | 2007-03-16 | 주식회사 만도 | Slip Joint of Universal Joint Having Clearance Compensation Mechanism |
| JP2009057848A (en) * | 2007-08-30 | 2009-03-19 | Hitachi Ltd | Actuator of variable valve gear |
| WO2015191309A1 (en) * | 2014-06-12 | 2015-12-17 | Borgwarner Inc. | Electric phaser coupling method |
| US10138944B2 (en) | 2014-06-12 | 2018-11-27 | Borgwarner, Inc. | Electric phaser coupling method |
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