JPH07167152A - Assembled hollow movable shaft - Google Patents
Assembled hollow movable shaftInfo
- Publication number
- JPH07167152A JPH07167152A JP5313761A JP31376193A JPH07167152A JP H07167152 A JPH07167152 A JP H07167152A JP 5313761 A JP5313761 A JP 5313761A JP 31376193 A JP31376193 A JP 31376193A JP H07167152 A JPH07167152 A JP H07167152A
- Authority
- JP
- Japan
- Prior art keywords
- press
- cylindrical surface
- shaft
- end member
- diameter
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0475—Hollow camshafts
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車のエンジンに用
いられるカムシャフトなどの組立中空可動軸に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembled hollow movable shaft such as a camshaft used in an automobile engine.
【０００２】[0002]
【従来の技術】自動車のエンジンに用いられるカムシャ
フトは、従来、鋳鉄製のものが多かった。これに対し
て、カムの耐摩耗性を高めるために、焼結合金からなる
カムを鋼製の軸本体に組み付けたカムシャフトが用いら
れるようになった。また軽量化のために、軸本体を中空
な管状のものとすることも行われるようになった。この
ように軸本体とカムとを別体とした場合、カムの組み付
けは圧入であるため、軸本体は直線的なものでなければ
ならない。これに対して、カムシャフトの端部は、その
支持などのために所定の形状を有していなければならな
いので、カムの組み付け後に、軸本体の端部に別体の端
部部材を組み付けるようにしている。この端部部材は、
従来、例えばろう付けにより軸本体に固定しているが、
ろう付けでは、熱による歪みの発生等の問題がある。2. Description of the Related Art Conventionally, many camshafts used for automobile engines are made of cast iron. On the other hand, in order to improve the wear resistance of the cam, a cam shaft in which a cam made of a sintered alloy is assembled to a steel shaft body has come to be used. Further, in order to reduce the weight, it has also been practiced to make the shaft body into a hollow tubular shape. When the shaft body and the cam are separated from each other in this way, the cam body is press-fitted, so the shaft body must be linear. On the other hand, the end of the camshaft must have a predetermined shape for supporting it, so after mounting the cam, attach a separate end member to the end of the shaft body. I have to. This end member is
Conventionally, it is fixed to the shaft body by brazing, for example.
Brazing has a problem such as distortion due to heat.
【０００３】これに対して、特開昭63-89229号公報に
は、管状の軸本体に圧入される端部部材の圧入部の外周
面に三角歯セレ−ション状の凹凸部を形成し、その山部
を軸本体の内周面に食い込ませることにより、軸本体に
端部部材を組み付けることが提案されている。On the other hand, in Japanese Patent Laid-Open No. 63-89229, a concavo-convex portion having a triangular tooth selection is formed on the outer peripheral surface of the press-fitting portion of the end member press-fitted into the tubular shaft body. It has been proposed to assemble the end member into the shaft body by biting the ridges into the inner peripheral surface of the shaft body.
【０００４】[0004]
【発明が解決しようとする問題点】上記従来の技術で
は、凹凸部の大径は軸本体の内径よりも大きいが、この
圧入部の凹凸部は軸方向に形成されているため、その凹
凸部の大径が設定値より1/100 mm単位でも大きいと、端
部部材の圧入が困難になるという問題点がある。また圧
入代の長さの管理も厳格にしなければならないという問
題点がある。さらに圧入荷重が大きくて作業効率が悪い
という問題点がある。しかも前記従来技術においては、
前記三角歯セレーション状凹凸の表面の硬度を軸本体の
硬度よりも硬くして、軸本体に圧入した時に三角歯セレ
ーション状凹凸の形状が変形しないようにしているの
で、前記三角歯セレーション状凹凸に高周波焼入れ等の
焼入れを施す必要があり、その製造が繁雑であるという
問題点もある。In the above conventional technique, the large diameter of the uneven portion is larger than the inner diameter of the shaft body, but since the uneven portion of this press-fitting portion is formed in the axial direction, the uneven portion is formed. If the large diameter is larger than the set value by a unit of 1/100 mm, there is a problem that it becomes difficult to press fit the end member. There is also the problem that the length of the press-fitting margin must be strictly controlled. Further, there is a problem that the press-fitting load is large and the work efficiency is poor. Moreover, in the above prior art,
By making the surface hardness of the triangular tooth serration-like unevenness harder than the hardness of the shaft main body so that the shape of the triangular tooth serration-like unevenness is not deformed when press-fitted into the shaft main body, There is also a problem that it is necessary to perform quenching such as induction hardening, and the production thereof is complicated.
【０００５】本発明は上記問題点に基づいて成されたも
のであり、端部部材の圧入が容易な組立中空可動軸を提
供することを目的とする。The present invention has been made in view of the above problems, and an object thereof is to provide an assembled hollow movable shaft in which the end member can be easily press-fitted.
【０００６】[0006]
【課題を解決するための手段】本発明の請求項１の組立
中空可動軸は、金属製の管状の軸本体と、この軸本体の
端部に組み付けられる金属製の端部部材とを備え、前記
端部部材は軸本体内に圧入される圧入部を有する組立中
空可動軸において、前記軸本体は内周に異形柱面を有
し、前記圧入部の径が前記異形柱面の小径よりも大きい
ものである。An assembled hollow movable shaft according to claim 1 of the present invention comprises a metallic tubular shaft body, and a metallic end member assembled to an end portion of the shaft body. In the assembled hollow movable shaft, wherein the end member has a press-fitting portion that is press-fitted into the shaft body, the shaft body has a deformed cylindrical surface on the inner periphery, and the diameter of the press-fitting portion is smaller than the small diameter of the deformed cylindrical surface. It's a big one.
【０００７】また請求項２の組立中空可動軸は、前記端
部部材の圧入部が周方向の凹凸部を有し、この凹凸部の
大径が前記異形柱面の小径よりも大きい。In the assembled hollow movable shaft according to the second aspect, the press-fitting portion of the end member has an uneven portion in the circumferential direction, and the large diameter of the uneven portion is larger than the small diameter of the deformed columnar surface.
【０００８】[0008]
【作用】請求項１の組立中空可動軸では、軸本体が内周
に異形柱面を有し、前記圧入部の径を前記異形柱面の小
径よりも大きくしているので、前記異形柱面が圧入部に
食い込むことにより端部部材が圧入固定され、しかもこ
の端部部材の圧入が容易である。In the assembled hollow movable shaft according to claim 1, since the shaft body has the deformed cylindrical surface on the inner circumference thereof, and the diameter of the press-fitting portion is made larger than the small diameter of the deformed cylindrical surface, the deformed cylindrical surface. The end member is press-fitted and fixed by biting into the press-fitting portion, and the end member is easily press-fitted.
【０００９】また請求項２の組立中空可動軸では、前記
端部部材の圧入部が周方向の凹凸部を有し、この凹凸部
の大径を前記異形柱面の小径よりも大きくしているの
で、端部部材の圧入荷重を一層小さくすることができ、
しかも軸本体と端部部材の組合わせの幅が広い。Further, in the assembled hollow movable shaft according to the second aspect, the press-fitting portion of the end member has an uneven portion in the circumferential direction, and the large diameter of the uneven portion is made larger than the small diameter of the deformed cylindrical surface. Therefore, the press-fitting load of the end member can be further reduced,
Moreover, the width of the combination of the shaft body and the end member is wide.
【００１０】[0010]
【実施例】以下、本発明の第１実施例について、図１乃
至図４を参照しながら説明する。本実施例の組立中空可
動軸は、自動車のエンジンに用いられるカムシャフトで
あり、その全体を図４に示してある。同図において１は
カムシャフトであり、２は鋼製の軸本体で、この軸本体
２は、図１に示すように三角歯形状の異形柱面21を有す
る円筒形管である。そして、軸本体２の外周中間部に
は、焼結合金からなるカムピース３およびジャーナル４
が複数固定されている。これらのカム３およびジャーナ
ル４は、その内周面と軸本体２の外周面との圧接によ
り、軸本体２に固定されている。また、軸本体２の両端
部には、その開口を閉塞する端部部材５，６がそれぞれ
組み付けられている。これら端部部材５，６は、熱処理
していない、すなわち焼入れしていない鋼材からなって
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The assembled hollow movable shaft of this embodiment is a camshaft used in an automobile engine, and its whole is shown in FIG. In the figure, 1 is a cam shaft, 2 is a steel shaft main body, and this shaft main body 2 is a cylindrical tube having a triangular tooth-shaped deformed cylindrical surface 21 as shown in FIG. The cam piece 3 and the journal 4 made of a sintered alloy are provided at the intermediate portion of the outer periphery of the shaft body 2.
Are fixed. The cam 3 and the journal 4 are fixed to the shaft body 2 by pressure contact between the inner peripheral surface thereof and the outer peripheral surface of the shaft body 2. Further, end members 5 and 6 for closing the opening of the shaft body 2 are respectively attached to both ends thereof. These end members 5 and 6 are made of steel that has not been heat treated, that is, not quenched.
【００１１】一方の端部部材５は、図２に示すように円
柱形状のフランジ51と、このフランジ51から同軸的に突
出したほぼ円柱形状の圧入部52とを有する。この圧入部
52は、軸本体２内に同軸的に圧入されるものであり、フ
ランジ51は軸本体２の端面に突き当たるものである。そ
して、圧入部52の外周面には、その周方向の凹凸を形成
する環状のローレット52Ａが形成されている。このロー
レット52Ａの大径Ｃは、軸本体２の異形柱面21の大径Ａ
よりも小さく、小径Ｂよりも大きい。またローレット52
Ａの小径Ｄは、異形柱面21の小径Ｂとほぼ同じ大きさと
なっている。なお、圧入部52のフランジ51側の基部は、
ローレット52Ａのない首部53であり、この首部53の径も
異形柱面21の小径Ｂとほぼ同じ大きさとなっている。一
方、圧入部52の先端面の外周には面取り部54が形成され
ており、この面取り部54の先端の径は、軸本体２の小径
Ｂよりも若干小さくなっている。As shown in FIG. 2, the one end member 5 has a columnar flange 51 and a substantially columnar press-fitting portion 52 coaxially protruding from the flange 51. This press fitting part
52 is coaxially press-fitted into the shaft main body 2, and the flange 51 abuts against the end surface of the shaft main body 2. An annular knurl 52A is formed on the outer peripheral surface of the press-fitting portion 52 so as to form irregularities in the circumferential direction. The large diameter C of the knurl 52A is the large diameter A of the deformed cylindrical surface 21 of the shaft body 2.
Smaller than the diameter B, and larger than the small diameter B. Knurled 52
The small diameter D of A is substantially the same as the small diameter B of the deformed cylindrical surface 21. The base of the press-fitting portion 52 on the flange 51 side is
The neck portion 53 does not have the knurl 52A, and the diameter of the neck portion 53 is substantially the same as the small diameter B of the deformed columnar surface 21. On the other hand, a chamfered portion 54 is formed on the outer periphery of the tip end surface of the press-fitting portion 52, and the diameter of the tip end of the chamfered portion 54 is slightly smaller than the small diameter B of the shaft body 2.
【００１２】そして、軸本体２に端部部材５を組み付け
るときには、端部部材５の圧入部52を軸本体２内に圧入
し、フランジ51を軸本体２の端面に突き当てる。この状
態では、ローレット52Ａの凸部では、図３に示すように
軸本体２の三角歯形状の異形柱面21の山部が圧入部52の
ローレット52Ａの凸部に食い込み、これにより軸本体２
に端部部材５が固定される。また、ローレット52Ａの凹
部では軸本体２の三角歯形状の異形柱面21の山部がほぼ
ぴったりと当接することになる。前記圧入部52の圧入
時、この圧入部52の先端部には上述したとおり面取り部
54が形成されているので円滑に芯合わせが行われ、スム
ーズに軸本体２内に案内される。次いで、三角歯形状の
異形柱面21の山部が突き当たって端部部材５に食い込み
始めるが、前記端部部材５は焼入れを施していないので
容易に変形し圧入される。特に本実施例のように圧入部
52にローレット52Ａを形成することにより、実質的な圧
入長さは、ローレット52Ａの凸部の長さに等しく圧入部
52の長さの略半分となり、しかも個々の凸部の軸方向の
長さはわずかであるので、圧入荷重が一層軽減される。
しかも前記ローレット52Ａの凸部は周方向に複数形成さ
れているので、軸本体２への端部部材５の固定は強固で
ある。When the end member 5 is assembled to the shaft body 2, the press-fitting portion 52 of the end member 5 is press-fitted into the shaft body 2 and the flange 51 is abutted against the end surface of the shaft body 2. In this state, in the convex portion of the knurl 52A, as shown in FIG. 3, the peak portion of the triangular tooth-shaped deformed cylindrical surface 21 of the shaft main body 2 bites into the convex portion of the knurl 52A of the press-fitting portion 52, whereby the shaft main body 2
The end member 5 is fixed to the. Further, in the concave portion of the knurl 52A, the peaks of the triangular tooth-shaped deformed cylindrical surface 21 of the shaft body 2 come into close contact with each other. When the press-fitting portion 52 is press-fitted, the chamfered portion is formed at the tip of the press-fitting portion 52 as described above.
Since 54 is formed, centering is smoothly performed, and the core body 2 is smoothly guided. Next, the peaks of the triangular-shaped irregularly shaped cylindrical surface 21 abut and start to bite into the end member 5, but since the end member 5 is not quenched, it is easily deformed and press-fitted. Especially as in this embodiment
By forming the knurl 52A on the 52, the substantial press-fit length is equal to the length of the convex part of the knurl 52A.
Since the length of 52 is approximately half and the length of each convex portion in the axial direction is small, the press-fitting load is further reduced.
Moreover, since a plurality of convex portions of the knurl 52A are formed in the circumferential direction, the fixing of the end member 5 to the shaft body 2 is firm.
【００１３】なお、他方の端部部材６は、具体的に図示
していないが、上述した一方の端部部材５と同様にし
て、軸本体２内に圧入する。Although not specifically shown, the other end member 6 is press-fitted into the shaft body 2 in the same manner as the one end member 5 described above.
【００１４】ところで、前記第１実施例では、圧入部52
の先端部に面取り部54を形成しているが、軸本体２の三
角歯形状の異形柱面21の端部に面取り部を形成してもよ
いし、両方に形成してもよい。また、前記第１実施例で
は、軸本体２の異形柱面21の大径Ａおよび小径Ｂならび
にローレット52Ａの大径Ｃおよび小径Ｄの関係をＤ＝Ｂ
＜Ｃ＜Ａとしているが、Ｄ＝Ｂ＜Ａ＜Ｃとしてもよい。
この場合の圧入状態はローレット52Ａの凸部では、図５
に示すように軸本体２の三角歯形状の異形柱面21の山部
の全部がローレット52Ａの凸部に食い込み、両者の接触
面積を大きくすることができ、軸本体２への端部部材５
の固定が一層強固である。By the way, in the first embodiment, the press-fitting portion 52 is used.
Although the chamfered portion 54 is formed at the tip end portion thereof, the chamfered portion may be formed at the end portion of the triangular tooth-shaped deformed cylindrical surface 21 of the shaft body 2, or both may be formed. In the first embodiment, the relation between the large diameter A and the small diameter B of the deformed cylindrical surface 21 of the shaft body 2 and the large diameter C and the small diameter D of the knurl 52A is D = B.
Although <C <A is set, D = B <A <C may be set.
The press-fitted state in this case is as shown in FIG.
As shown in FIG. 5, the entire peak portion of the triangular tooth-shaped irregularly shaped cylindrical surface 21 of the shaft main body 2 bites into the convex portion of the knurl 52A, and the contact area between the two can be increased, and the end member 5 to the shaft main body 2 can be increased.
Is more firmly fixed.
【００１５】なお、上述したような本発明の組立中空可
動軸において軸本体２に圧入されるカムピース３として
は特に制限はなく、通常使用されるものを用いることが
できるが、例えば、軸本体２とカムピース３とを以下の
ような構造とすることもできる。まず軸本体２のカムピ
ース３の圧入される箇所には、図６に示すように軸本体
２の周方向に環状のローレット22を形成する。またカム
ピース３の内周面側は図７に示すように前記環状のロー
レット22の凹凸と直交する方向に凹凸31を形成する。軸
本体２の外周面に環状のローレット22を形成するととも
にカムピース３の内周面側にこれと直交する方向の凹凸
31を形成することにより、軸本体２の凹凸21がカムピー
ス３の内周面側に食い込み、圧入嵌合による接合を一層
強固なものとすることができる。In the assembled hollow movable shaft of the present invention as described above, the cam piece 3 to be press-fitted into the shaft body 2 is not particularly limited, and a commonly used one can be used. For example, the shaft body 2 The cam piece 3 and the cam piece 3 may have the following structures. First, as shown in FIG. 6, an annular knurl 22 is formed in the circumferential direction of the shaft body 2 at a position where the cam piece 3 of the shaft body 2 is press-fitted. Further, as shown in FIG. 7, the inner peripheral surface side of the cam piece 3 is formed with irregularities 31 in a direction orthogonal to the irregularities of the annular knurl 22. An annular knurl 22 is formed on the outer peripheral surface of the shaft body 2, and the inner peripheral surface of the cam piece 3 is uneven in the direction orthogonal to the inner peripheral surface.
By forming 31, the concavities and convexities 21 of the shaft body 2 bite into the inner peripheral surface side of the cam piece 3, and the joining by press-fitting can be made stronger.
【００１６】また、ジャーナル部材４も特に制限はない
が、前記カムピース３の場合と同様に軸本体２の周方向
に環状のローレットを形成するとともに、内周面側にこ
の環状のローレットの凹凸と直交する方向に凹凸を形成
して圧入嵌合することができる。The journal member 4 is also not particularly limited, but an annular knurl is formed in the circumferential direction of the shaft main body 2 as in the case of the cam piece 3, and the annular knurls are uneven on the inner peripheral surface side. It is possible to form a concavo-convex pattern in a direction orthogonal to each other and press-fit and fit.
【００１７】このような本発明の組立中空可動軸１は、
例えば以下のような方法により製造することができる。
まず、引き抜き加工により、前記三角歯形状の異形柱面
21を通する鋼製の中空軸本体２を製造し、必要に応じて
所定の箇所に環状のローレット22等を転造し、続いてカ
ムピース３およびジャーナル４を位置決めして中空軸本
体２に圧入嵌合し、最後に前記環状のローレット52Ａを
有する端部部材５，６を圧入する。The assembled hollow movable shaft 1 of the present invention as described above is
For example, it can be manufactured by the following method.
First, by drawing, the triangular tooth-shaped irregularly shaped cylindrical surface
Manufacture a steel hollow shaft main body 2 through which 21 passes, and if necessary, roll an annular knurling 22 or the like at a predetermined position, then position the cam piece 3 and the journal 4 and press fit into the hollow shaft main body 2. After fitting, the end members 5 and 6 having the annular knurl 52A are finally press-fitted.
【００１８】本発明の組立中空可動軸１は、内周に異形
柱面21を有する管状の軸本体２と、この軸本体の端部に
組み付けられる端部部材５とを備え、前記端部部材５は
軸本体内に圧入される圧入部52を有し、この圧入部52の
径が前記異形柱面21の小径Ｂよりも大きいものであるの
で、前記異形柱面21が圧入部52に食い込むことにより端
部部材５が圧入固定され、この圧入の際の端部部材５の
圧入荷重は従来よりも軽減される。また圧入部52の圧入
代の管理も容易である。さらに、圧入部52の径の設定値
の誤差範囲が1/10mm単位でよく、従来よりも大幅に緩和
される。特に前記端部部材５の圧入部52に周方向の凹凸
部を形成するローレット52Ａを形成するとともに、この
ローレット52Ａの大径Ｃを前記異形柱面21の小径Ｂより
も大きくすることにより、端部部材５の圧入荷重をさら
に小さくでき、かつ軸本体２と端部部材５の硬度の組合
わせの幅を広くすることができる。さらにこの軸端部材
５は軸端の径にかかわらず、同一ロール工具で加工が可
能であるという利点も有する。The assembled hollow movable shaft 1 of the present invention comprises a tubular shaft body 2 having a modified cylindrical surface 21 on the inner periphery thereof, and an end member 5 assembled to the end of the shaft body. Reference numeral 5 has a press-fitting portion 52 which is press-fitted into the shaft main body. Since the diameter of the press-fitting portion 52 is larger than the small diameter B of the deformed cylindrical surface 21, the deformed cylindrical surface 21 bites into the press-fitted portion 52. As a result, the end member 5 is press-fitted and fixed, and the press-fitting load of the end member 5 at the time of this press-fitting is reduced as compared with the conventional case. Further, it is easy to manage the press-fitting margin of the press-fitting portion 52. Further, the error range of the set value of the diameter of the press-fitting portion 52 may be in the unit of 1/10 mm, which is significantly reduced as compared with the conventional case. In particular, by forming a knurl 52A forming an uneven portion in the circumferential direction on the press-fitting portion 52 of the end member 5 and making the large diameter C of the knurl 52A larger than the small diameter B of the deformed column surface 21, The press-fitting load of the member 5 can be further reduced, and the width of the combination of hardness of the shaft body 2 and the end member 5 can be widened. Further, this shaft end member 5 has an advantage that it can be processed by the same roll tool regardless of the diameter of the shaft end.
【００１９】以上本発明を添付図面を参照して説明して
きたが、本発明は上記実施例に限定されるものではな
く、例えば端部部材５に焼入れを施して軸本体２より硬
くし、前記異形柱面21が変形するようにしてもよいし、
端部部材５と軸本体２の硬度をほぼ同等としてもよい。
また軸本体２の内面の異形柱面21の形状は図８に示すよ
うな略花弁状であってもよいし、図９に示すような角部
に丸みを持たせた略６角形状等の多角形状であってもよ
い。さらにローレット52Ａは、本実施例のように環状の
ものに限らず、周方向に凹凸を有するものであればよ
く、例えば図10に示すようにアヤメ状であってもよい
し、あるいは螺旋状ローレットとしてもよい。また、軸
本体２の異形柱面21の大径Ａおよび小径Ｂと端部部材５
の圧入部51の径は、少なくとも異形柱面21の小径Ｂより
も圧入部51の大径Ｃが大きく、かつ圧入可能な範囲で適
宜変更可能である。The present invention has been described above with reference to the accompanying drawings. However, the present invention is not limited to the above-mentioned embodiment, and for example, the end member 5 is hardened to be harder than the shaft main body 2, The deformed cylindrical surface 21 may be deformed,
The end member 5 and the shaft body 2 may have substantially the same hardness.
Further, the shape of the deformed cylindrical surface 21 on the inner surface of the shaft body 2 may be a substantially petal shape as shown in FIG. 8, or a substantially hexagonal shape with rounded corners as shown in FIG. It may be polygonal. Further, the knurl 52A is not limited to the annular one as in the present embodiment, and may be any one having irregularities in the circumferential direction, and may be, for example, an iris shape as shown in FIG. 10, or a spiral knurl. May be Further, the large diameter A and the small diameter B of the deformed cylindrical surface 21 of the shaft body 2 and the end member 5
The diameter of the press-fitting portion 51 can be appropriately changed within a range in which the large diameter C of the press-fitting portion 51 is at least larger than the small diameter B of the deformed cylindrical surface 21 and the press-fitting portion 51 can be press-fitted.
【００２０】[0020]
【発明の効果】本発明の請求項１の組立中空可動軸は、
金属製の管状の軸本体と、この軸本体の端部に組み付け
られる金属製の端部部材とを備え、前記端部部材は軸本
体内に圧入される圧入部を有する組立中空可動軸におい
て、前記軸本体が内周に異形柱面を有し、前記圧入部の
径が前記異形柱面の小径よりも大きくしているので、前
記異形柱面が圧入部に食い込むことにより端部部材が圧
入固定され、この端部部材の圧入が容易である。The assembled hollow movable shaft according to claim 1 of the present invention comprises:
In an assembled hollow movable shaft having a metal tubular shaft main body and a metal end member assembled to the end of the shaft main body, the end member having a press-fitting portion press-fitted into the shaft main body, Since the shaft main body has a deformed cylindrical surface on the inner periphery and the diameter of the press-fitting portion is larger than the small diameter of the deformed cylindrical surface, the deformed cylindrical surface bites into the press-fitting portion to press-fit the end member. It is fixed, and it is easy to press fit this end member.
【００２１】また請求項２の組立中空可動軸は、前記端
部部材の圧入部が周方向の凹凸部を有し、この凹凸部の
大径が前記異形柱面の小径よりも大きいので、端部部材
の圧入荷重が一層小さくて済み、しかも軸本体と端部部
材の組合わせの幅が広い。Further, in the assembled hollow movable shaft of claim 2, since the press-fitting portion of the end member has a circumferential uneven portion, and the large diameter of the uneven portion is larger than the small diameter of the deformed cylindrical surface, The press-fitting load of the member can be further reduced, and the width of the combination of the shaft body and the end member is wide.
【図１】本発明の第１実施例の組立中空可動軸の軸本体
の端部を示す斜視図である。FIG. 1 is a perspective view showing an end portion of a shaft body of an assembled hollow movable shaft according to a first embodiment of the present invention.
【図２】本発明の第１実施例の組立中空可動軸の軸本体
と端部部材とを示す部分断面図である。FIG. 2 is a partial cross-sectional view showing a shaft main body and an end member of the assembled hollow movable shaft of the first embodiment of the present invention.
【図３】前記端部部材を圧入した状態を示す要部断面図
である。FIG. 3 is a cross-sectional view of an essential part showing a state where the end member is press-fitted.
【図４】本発明の第１実施例の組立中空可動軸の全体斜
視図である。FIG. 4 is an overall perspective view of the assembled hollow movable shaft of the first embodiment of the present invention.
【図５】本発明の第２実施例の組立中空可動軸における
端部部材を圧入した状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which an end member of the assembled hollow movable shaft of the second embodiment of the present invention is press-fitted.
【図６】軸本体のカムピース設置部分における環状ロー
レットの一例を示す正面図である。FIG. 6 is a front view showing an example of an annular knurl in the cam piece installation portion of the shaft body.
【図７】カムピースの形状の一例を示す斜視図である。FIG. 7 is a perspective view showing an example of the shape of a cam piece.
【図８】本発明の第３実施例の組立中空可動軸の軸本体
の異形柱面の形状を示す斜視図である。FIG. 8 is a perspective view showing the shape of a modified cylindrical surface of the shaft body of the assembled hollow movable shaft according to the third embodiment of the present invention.
【図９】本発明の第４実施例の組立中空可動軸の軸本体
の異形柱面の形状を示す斜視図である。FIG. 9 is a perspective view showing the shape of a modified cylindrical surface of the shaft body of the assembled hollow movable shaft according to the fourth embodiment of the present invention.
【図10】本発明の第５実施例の組立中空可動軸の端部部
材を示す正面図である。FIG. 10 is a front view showing an end member of an assembled hollow movable shaft according to a fifth embodiment of the present invention.
１ カムシャフト（組立中空可動軸） ２ 軸本体 ５ 端部部材 21 異形柱面 52 圧入部 52Ａ ローレット（周方向の凹凸部） Ｂ 異形柱面の小径 Ｃ 圧入部の大径 1 Cam shaft (movable hollow shaft for assembly) 2 Shaft main body 5 End member 21 Deformed cylindrical surface 52 Press-fitted portion 52A Knurled (circumferential uneven portion) B Small diameter of deformed cylindrical surface C Large diameter of pressed-in portion
Claims (2)
端部に組み付けられる金属製の端部部材とを備え、前記
端部部材は軸本体内に圧入される圧入部を有する組立中
空可動軸において、前記軸本体が内周に異形柱面を有
し、前記圧入部の径が前記異形柱面の小径よりも大きい
ことを特徴とする組立中空可動軸。1. An assembly having a metal tubular shaft body and a metal end member assembled to an end portion of the shaft body, the end member having a press-fitting portion press-fitted into the shaft body. In the hollow movable shaft, the assembled hollow movable shaft is characterized in that the shaft body has a deformed cylindrical surface on the inner circumference thereof, and the diameter of the press-fitting portion is larger than the small diameter of the deformed cylindrical surface.
て、前記端部部材の圧入部が周方向の凹凸部を有し、前
記凹凸部の大径が前記異形柱面の小径よりも大きいこと
を特徴とする組立中空可動軸。2. The assembled hollow movable shaft according to claim 1, wherein the press-fitting portion of the end member has an uneven portion in the circumferential direction, and the large diameter of the uneven portion is larger than the small diameter of the deformed columnar surface. An assembled hollow movable shaft characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5313761A JPH07167152A (en) | 1993-12-14 | 1993-12-14 | Assembled hollow movable shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5313761A JPH07167152A (en) | 1993-12-14 | 1993-12-14 | Assembled hollow movable shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07167152A true JPH07167152A (en) | 1995-07-04 |
Family
ID=18045213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5313761A Withdrawn JPH07167152A (en) | 1993-12-14 | 1993-12-14 | Assembled hollow movable shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07167152A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5993867A (en) * | 1982-11-16 | 1984-05-30 | Matsushita Electric Ind Co Ltd | Production of needle iron |
| JPWO2004016961A1 (en) * | 2002-08-19 | 2005-12-02 | 三菱マテリアル株式会社 | Rotation transmission member, rotation transmission assembly, and gear mechanism |
| DE202005000430U1 (en) * | 2005-01-13 | 2006-05-24 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Attachment of drive element for adjusting seat in motor vehicle has drive element with opening for admission of second drive element whereby one of the surfaces of expandable section results in deformation |
| EP2171222A1 (en) * | 2007-07-02 | 2010-04-07 | BorgWarner Inc. | Concentric cam with check valves in the spool for a phaser |
| GB2471832A (en) * | 2009-07-07 | 2011-01-19 | Agco Gmbh | A method of securing an annulas gear in an aperture in a tractor back axle housing |
| US20140239707A1 (en) * | 2007-03-22 | 2014-08-28 | Ntn Corporation | Bearing device for a wheel |
| JP2015130217A (en) * | 2014-01-09 | 2015-07-16 | セイコーインスツル株式会社 | Bearing device and information record reproduction device |
| EP3483402A4 (en) * | 2016-07-08 | 2020-02-26 | Shanghai Universoon Autoparts Co., Ltd | Motor and camshaft thereof, and manufacturing method for camshaft |
-
1993
- 1993-12-14 JP JP5313761A patent/JPH07167152A/en not_active Withdrawn
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5993867A (en) * | 1982-11-16 | 1984-05-30 | Matsushita Electric Ind Co Ltd | Production of needle iron |
| JPWO2004016961A1 (en) * | 2002-08-19 | 2005-12-02 | 三菱マテリアル株式会社 | Rotation transmission member, rotation transmission assembly, and gear mechanism |
| JP4642465B2 (en) * | 2002-08-19 | 2011-03-02 | 株式会社ダイヤメット | Rotation transmission assembly and method of assembling the rotation transmission assembly |
| DE202005000430U1 (en) * | 2005-01-13 | 2006-05-24 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Attachment of drive element for adjusting seat in motor vehicle has drive element with opening for admission of second drive element whereby one of the surfaces of expandable section results in deformation |
| US20140239706A1 (en) * | 2007-03-22 | 2014-08-28 | Ntn Corporation | Bearing device for a wheel |
| US9511629B2 (en) * | 2007-03-22 | 2016-12-06 | Ntn Corporation | Bearing device for a wheel |
| US9321309B2 (en) | 2007-03-22 | 2016-04-26 | Ntn Corporation | Manufacturing method for a bearing device for a wheel |
| US9039286B2 (en) * | 2007-03-22 | 2015-05-26 | Ntn Corporation | Bearing device for a wheel |
| US20140239707A1 (en) * | 2007-03-22 | 2014-08-28 | Ntn Corporation | Bearing device for a wheel |
| EP2171222A1 (en) * | 2007-07-02 | 2010-04-07 | BorgWarner Inc. | Concentric cam with check valves in the spool for a phaser |
| US8186319B2 (en) | 2007-07-02 | 2012-05-29 | Borgwarner Inc. | Concentric cam with check valves in the spool for a phaser |
| EP2171222A4 (en) * | 2007-07-02 | 2012-02-29 | Borgwarner Inc | Concentric cam with check valves in the spool for a phaser |
| GB2471832A (en) * | 2009-07-07 | 2011-01-19 | Agco Gmbh | A method of securing an annulas gear in an aperture in a tractor back axle housing |
| JP2015130217A (en) * | 2014-01-09 | 2015-07-16 | セイコーインスツル株式会社 | Bearing device and information record reproduction device |
| EP3483402A4 (en) * | 2016-07-08 | 2020-02-26 | Shanghai Universoon Autoparts Co., Ltd | Motor and camshaft thereof, and manufacturing method for camshaft |
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