JP2590508B2 - Universal joint - Google Patents
Universal jointInfo
- Publication number
- JP2590508B2 JP2590508B2 JP63012485A JP1248588A JP2590508B2 JP 2590508 B2 JP2590508 B2 JP 2590508B2 JP 63012485 A JP63012485 A JP 63012485A JP 1248588 A JP1248588 A JP 1248588A JP 2590508 B2 JP2590508 B2 JP 2590508B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling element
- shaft
- contact
- concave
- universal joint
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
- F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
- F16D3/2055—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having three pins, i.e. true tripod joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/24—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts comprising balls, rollers, or the like between overlapping driving faces, e.g. cogs, on both coupling parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、自在継手に関し、特に車両の駆動系に使用
するのに適する自在継手に関する。Description: TECHNICAL FIELD The present invention relates to a universal joint, and more particularly to a universal joint suitable for use in a drive system of a vehicle.
（従来の技術） 車両の駆動系に使用される自在継手として、トリポー
ド式等速ジョイントと呼称されるものがある。これは、
円周方向に等間隔をおいて設けられた３本のトラニオン
軸を有する、第１の軸と一体となった内側部品と、円周
方向に等間隔をおいて設けられた軸線方向に伸びる３つ
の案内溝を有し、前記内側部品を取り囲んで配置され
る、第２の軸と一体となった外側部品と、前記各トラニ
オン軸に回転可能に指示され、前記各案内溝を滑動する
ローラとを備える。前記ローラと接触する案内溝の部分
は、断面が円弧状となるように形成され、他方、ローラ
はその外周面が球面となるように形成される。(Prior Art) As a universal joint used for a drive system of a vehicle, there is a so-called tripod type constant velocity joint. this is,
An inner part integral with the first shaft, having three trunnion shafts provided at equal intervals in the circumferential direction, and an axially extending 3 provided at equal intervals in the circumferential direction An outer part having two guide grooves and arranged around the inner part and integrated with a second shaft; and a roller rotatably instructed by each of the trunnion shafts and sliding in each of the guide grooves. Is provided. The portion of the guide groove that comes into contact with the roller is formed to have an arc-shaped cross section, while the roller is formed to have a spherical outer peripheral surface.
前記等速ジョイントを車両の駆動系に組み込んで使用
するとき、第１の軸と第２の軸とが角度をなし、等速ジ
ョイントがいわゆるジョイント角のついた状態で回転さ
れることがある。この場合、各ローラは軸の回転に伴っ
て外側部品の軸線方向へ相対移動し、同時に外側部品に
対し径方向へ相対移動することとなる。そして、この移
動の際の摩擦抵抗に起因して振動が発生し、乗員に不快
感を与えている。When the constant velocity joint is used by being incorporated into a drive system of a vehicle, the first axis and the second axis may form an angle, and the constant velocity joint may be rotated with a so-called joint angle. In this case, each roller relatively moves in the axial direction of the outer part with the rotation of the shaft, and at the same time, relatively moves in the radial direction with respect to the outer part. Then, vibration occurs due to the frictional resistance at the time of this movement, giving the occupant an uncomfortable feeling.
前記振動を抑えるための種々の提案がなされている。 Various proposals have been made for suppressing the vibration.
実開昭62−20225号公報に記載された自在継手では、
外側部品の案内溝の、ローラと接触する部分は、断面が
直線状となるように形成され、他方、ローラは円筒状に
形成されている。ローラの内側に案内リングが配置さ
れ、ローラは案内リングを介してトラニオン軸に支持さ
れる。トラニオン軸は案内リングに向けて、また案内リ
ングはトラニオン軸に向けて凸となる球面に形成され、
これら部品は球面で接触する。In the universal joint described in Japanese Utility Model Publication No. 62-20225,
The part of the guide groove of the outer part which comes into contact with the roller is formed so that its cross section is straight, while the roller is formed in a cylindrical shape. A guide ring is arranged inside the roller, and the roller is supported on the trunnion shaft via the guide ring. The trunnion shaft is formed into a spherical surface that is convex toward the guide ring, and the guide ring is formed toward the trunnion shaft.
These parts make contact on a spherical surface.
特開昭61−189322号公報に記載された自在継手では、
外側部品の案内溝の、ローラの径方向の外方に位置する
部分は、断面が直線状となるように形成され、ローラは
円筒状に形成されている。そして、案内溝とローラとの
間に、平面形状がＵ字状に呈する部品であって外周面の
断面が円弧状に、内周面の断面が直線状に形成された部
品が介在されている。In the universal joint described in JP-A-61-189322,
A portion of the guide groove of the outer part, which is located radially outward of the roller, is formed so as to have a linear cross section, and the roller is formed in a cylindrical shape. Then, between the guide groove and the roller, there is provided a component having a U-shaped planar shape, in which the cross section of the outer peripheral surface is formed in an arc shape and the cross section of the inner peripheral surface is formed in a straight line. .
実開昭61−114128号公報に記載された自在継手では、
ローラとトラニオン軸との間に、ローラを円周方向へ回
転させる複数のニードルが配置され、さらにこれらニー
ドルの内側に、ローラをトラニオン軸の軸線方向へ移動
させる複数のニードルが配置されている。In the universal joint described in Japanese Utility Model Publication No. 61-114128,
A plurality of needles for rotating the roller in the circumferential direction are arranged between the roller and the trunnion shaft, and a plurality of needles for moving the roller in the axial direction of the trunnion shaft are arranged inside these needles.
（発明が解決しようとする課題） 前記いずれの公報に記載された自在継手も、部品点数
が増加し、構造が複雑である。しかも、独自の自在継手
を構成するべく新たに加えられた部品は、精密加工が必
要であるため、加工に手間がかかり、コスト高の原因と
なっている。(Problems to be Solved by the Invention) The universal joints described in any of the above publications have an increased number of parts and a complicated structure. In addition, the parts newly added to form a unique universal joint require precision processing, which requires time and effort and increases the cost.
本発明の目的は、部品点数を増やすことなく、構造を
簡単にでき、コスト高となるのを抑えることができる自
在継手を提供することにある。An object of the present invention is to provide a universal joint that can simplify the structure without increasing the number of parts and can suppress an increase in cost.
（課題を解決するための手段） 本発明に係る自在継手は、円周方向に等間隔をおいて
配置されていて径方向へ伸びる３つの第１の係合部が設
けられた、第１の軸と一体となった内側部品と、該内側
部品を取り囲む外側部品であって前記各係合部を受け入
れる軸線方向へ伸びる凹所を有する第２の係合部が円周
方向に等間隔をおいて設けられた、第２の軸と一体とな
った外側部品と、前記第１の係合部と前記第２の係合部
とに接触するように前記各凹所内に配置された転動体と
を含む。前記第１の係合部および前記第２の係合部の一
方の前記転動体と接触する面は凹曲面であり、前記第１
の係合部および前記第２の係合部の他方の前記転動体と
接触する面は、前記第１の軸または前記第２の軸の軸線
方向へ伸びている平面である。(Means for Solving the Problems) A universal joint according to the present invention is provided with three first engagement portions which are arranged at equal intervals in the circumferential direction and extend in the radial direction. An inner part integral with the shaft and an outer part surrounding the inner part and having a second engaging part having a recess extending in the axial direction for receiving the engaging part are equally spaced in the circumferential direction. An outer part integrated with the second shaft, and a rolling element disposed in each of the recesses so as to contact the first engagement portion and the second engagement portion. including. The surface of one of the first engagement portion and the second engagement portion that contacts the rolling element is a concave curved surface,
The other surface of the engaging portion and the second engaging portion that comes into contact with the rolling element is a plane extending in the axial direction of the first shaft or the second shaft.
（作用および効果） たとえば、第１の軸を駆動側に結合し、第２の軸を従
動側に結合して使用する。第１の軸から伝えらえた駆動
力ないし回転トルクは、内側部品を経て転動体に、さら
に転動体から外側部品に至り、第２の軸に取り出され
る。(Operation and Effect) For example, the first shaft is connected to the driving side, and the second shaft is connected to the driven side. The driving force or the rotational torque transmitted from the first shaft passes through the inner part to the rolling element, further from the rolling element to the outer part, and is taken out to the second shaft.
自在継手がジョイント角をなして回転するとき、転動
体が平面を転がり、転動体と第１または第２の係合部と
の軸線方向および径方向の相対移動がなされる。これに
より、相対移動の際の摩擦抵抗が大幅に軽減される。そ
して、この場合、従来の等速ジョイントと同じ等速原理
に従い、等速回転する。When the universal joint rotates at a joint angle, the rolling element rolls on a plane, and the rolling element and the first or second engaging portion move relative to each other in the axial direction and the radial direction. Thereby, the frictional resistance during the relative movement is greatly reduced. And in this case, it rotates at a constant speed according to the same constant velocity principle as the conventional constant velocity joint.
転動体を、内側部品の第１の係合部および外側部品の
第２の係合部の一方に設けた凹曲面によって定位置に保
持し、他方に設けた平面で転がらせる構成であるため、
部品点数を前述した公報に記載された自在継手に比べて
大幅に少なくでき、構造が簡素になる。かくて、コスト
の低減が可能である。Since the rolling element is held at a fixed position by a concave curved surface provided on one of the first engagement portion of the inner component and the second engagement portion of the outer component, and is rolled on a plane provided on the other,
The number of parts can be greatly reduced as compared with the universal joint described in the above-mentioned publication, and the structure is simplified. Thus, the cost can be reduced.
自在継手がジョイント角のある状態で回転するとき、
転動体が平面に転がるため、転動体の第１または第２の
係合部との相対移動が低摩擦状態下で行われることとな
る。これにより、ジョイント角のある状態での回転に起
因する振動が大幅に低減する。When the universal joint rotates with a joint angle,
Since the rolling element rolls on a plane, the relative movement of the rolling element with the first or second engaging portion is performed in a low friction state. As a result, the vibration caused by the rotation with the joint angle is greatly reduced.
（実施例） 自在継手10は、第１図および第２図に示すように、内
側部品12と、外側部品14と、転動体16とを含む。(Embodiment) As shown in FIG. 1 and FIG. 2, the universal joint 10 includes an inner part 12, an outer part 14, and a rolling element 16.
内側部品12は、円周方向に120゜の等間隔をおいて配
置されていて径方向へ伸びる３つの係合部13aを有す
る。図示の実施例では、３つの整合部13aは中央の円筒
状のボス部13bと一体となっている。ボス部13bの内周面
にスプラインが切られ、他方、外周面にスプラインを有
する軸18がボス部13bに嵌合され、ボス部13bを止め輪20
で固定して、内側部品12は軸18に結合されている。The inner part 12 has three engaging portions 13a which are arranged at equal intervals of 120 ° in the circumferential direction and extend in the radial direction. In the illustrated embodiment, the three alignment portions 13a are integrated with the central cylindrical boss portion 13b. A spline is cut on the inner peripheral surface of the boss portion 13b, while a shaft 18 having a spline on the outer peripheral surface is fitted into the boss portion 13b, and the boss portion 13b is connected to the retaining ring 20.
, The inner part 12 is connected to the shaft 18.
各係合部13aは実質的に直方体であって、軸18の軸線
方向の長さＬが軸線に直交する方向の厚みＤより大きく
なるように形成される。そして、長さＬは後述する転動
体16の直径より大きく、厚みＤは転動体16の直径より小
さい。Each engaging portion 13a is substantially a rectangular parallelepiped, and is formed such that the axial length L of the shaft 18 is greater than the thickness D in a direction perpendicular to the axis. The length L is larger than the diameter of the rolling element 16 described later, and the thickness D is smaller than the diameter of the rolling element 16.
各係合部13aに凹曲面22が設けられている。図示の実
施例では、凹曲面22は、軸18の軸線O1を中心として軸線
に直交する仮想面に描かれた円24と、軸線から係合部13
aの中央に伸びる半径26との交点O2を中心とした半径Ｒ
の凹球面である。Each engaging portion 13a is provided with a concave curved surface 22. In the illustrated embodiment, the concave curved surface 22, the circle 24 drawn on a virtual plane perpendicular to the axis about the axis O 1 of the shaft 18, engagement from the axis portion 13
Radius R centered on intersection O 2 with radius 26 extending to the center of a
Is a concave spherical surface.
外側部品14は、内側部品12を取り囲むものであって、
内側部品12の各係合部13aを受け入れる凹所28を有する
第２の係合部15aを、円周方向に120゜の等間隔をおいて
備える。外側部品14の各係合部15aは基部15bから径方向
の外方へ突出された形体であり、係合部15aと基部15bと
の軸線方向の一方の端部は、閉塞部15cによって密閉さ
れ、他方の端部は開口となっている。軸30が閉塞部15c
に一体に結合されている。内側部品12は、外側部品14の
開口から、外側部品14の内部に差し込まれる。The outer part 14 surrounds the inner part 12, and
Second engagement portions 15a having recesses 28 for receiving the respective engagement portions 13a of the inner part 12 are provided at equal circumferential intervals of 120 °. Each engaging portion 15a of the outer part 14 has a shape protruding radially outward from the base 15b, and one axial end of the engaging portion 15a and the base 15b is sealed by a closing portion 15c. The other end is an opening. Shaft 30 is closed part 15c
Are integrally joined. The inner part 12 is inserted into the outer part 14 from the opening of the outer part 14.
凹所28は、軸18の軸線と係合部13aの中央を通る半径2
6とを含む仮想面に平行な２つの平面29を両側に有し、
これら平面29は軸18の軸線に沿って伸びている。両平面
29のなす間隔は2Rである。The recess 28 has a radius 2 passing through the axis of the shaft 18 and the center of the engaging portion 13a.
6 has two planes 29 on both sides parallel to a virtual plane including
These planes 29 extend along the axis of the shaft 18. Both planes
The interval made by 29 is 2R.
転動体16は、図示の実施例では、半径Ｒの球である。
この転動体16は内側部品12の各係合部13aの凹曲面22に
ころがり接触し、凹曲面22によって定位置に保持され
る。転動体16を、係合部13aに配置して凹曲面22と結合
させるには、たとえば、内側部品12を、各係合部13aの
半径26上で切断したほぼＷ字状を呈する３つの部品とし
て形成し、転動体16を所定の位置に配置して、３つの部
品相互を溶接、ねじ止め、接着等で結合する。転動体16
は内側部品12の凹曲面22に対して、また、外側部品14の
２つの平面29に対して、動きばめとなる大きさに形成さ
れる。The rolling element 16 is a sphere having a radius R in the illustrated embodiment.
The rolling element 16 is in rolling contact with the concave curved surface 22 of each engaging portion 13a of the inner part 12, and is held at a fixed position by the concave curved surface 22. In order to arrange the rolling element 16 on the engaging portion 13a and join the rolling member 16 to the concave curved surface 22, for example, the inner component 12 is formed by cutting three substantially W-shaped parts cut along the radius 26 of each engaging portion 13a. The rolling element 16 is arranged at a predetermined position, and the three parts are connected to each other by welding, screwing, bonding or the like. Rolling element 16
Is sized to a motion fit with respect to the concave curved surface 22 of the inner part 12 and with respect to the two planes 29 of the outer part 14.
第３図に示す実施例では、自在継手40は内側部品42
と、外側部品44と、２つの転動体46とを含む。In the embodiment shown in FIG.
, An outer part 44 and two rolling elements 46.
内側部品42は、円周方向に等間隔をおいて配置されて
いて径方向へ伸びる３つの係合部43を備えるが、この係
合部43には凹曲面は設けられていない。結合部43の両側
の面48は、軸の軸線と係合部43の中央を通る半径とを含
む仮想面に平行である。内側部品42の係合部43の径方向
および軸線方向の長さは、自在継手が最大のジョイント
角をとって回転するとき、転動体46との係合が外れない
ように定められる。The inner part 42 includes three engaging portions 43 which are arranged at equal intervals in the circumferential direction and extend in the radial direction, but the engaging portions 43 are not provided with a concave curved surface. The surfaces 48 on both sides of the connecting portion 43 are parallel to an imaginary surface including the axis of the shaft and a radius passing through the center of the engaging portion 43. The radial and axial lengths of the engagement portion 43 of the inner part 42 are determined so that the engagement with the rolling element 46 does not come off when the universal joint rotates at the maximum joint angle.
外側部品44は内側部品42を取り囲むものであって、こ
の外側部品44に、内側部品42の各係合部43を受け入れる
軸線方向へ伸びる凹所50を有する係合部45が、円周方向
に等間隔をおいて設けられている。外側部品44の、内側
部品42の係合部43に対面する２つの内面52のそれぞれは
凹曲面54を有する。この場合の凹曲面54は、内面52上に
中心O3を有する半径Ｒの凹半球面である。凹半球面の中
心O3は、内面52上にある必要は必ずしもなく、たとえ
ば、中心O3が内面52の内方となるなど、転動体46を保持
できる適宜な位置に選択され得る。The outer part 44 surrounds the inner part 42, and the outer part 44 has an engaging part 45 having a recess 50 extending in the axial direction for receiving each engaging part 43 of the inner part 42. They are provided at equal intervals. Each of the two inner surfaces 52 of the outer component 44 facing the engagement portion 43 of the inner component 42 has a concave curved surface 54. The concave curved surface 54 in this case is a concave hemispheric surface having a center O 3 on the inner surface 52 and a radius R. The center O 3 of the concave hemisphere does not necessarily need to be on the inner surface 52, and may be selected at an appropriate position where the rolling element 46 can be held, for example, the center O 3 is inside the inner surface 52.
２個の転動体46はいずれも半径Ｒの球であり、各凹所
50内に、内側部品42の係合部43の各側に１個が位置する
ように配置される。転動体46は外側部品44の係合部45の
凹曲面54で定位置に保持され、内側部品42の係合部43の
平面48に接する。この状態で転動体は動きばめとなる大
きさに形成される。Each of the two rolling elements 46 is a sphere having a radius R,
In the inside 50, one is located on each side of the engagement portion 43 of the inner part 42. The rolling element 46 is held at a fixed position by the concave curved surface 54 of the engaging portion 45 of the outer component 44, and comes into contact with a plane 48 of the engaging portion 43 of the inner component 42. In this state, the rolling element is formed to have a size that can be fitted with a motion.
第３図に示した実施例のその他の構成は第１図および
第２図に示した実施例と同じである。Other configurations of the embodiment shown in FIG. 3 are the same as those of the embodiment shown in FIGS. 1 and 2.
第４図に示した実施例では、内側部品12の係合部13a
に設けられた凹曲面は２つの凹円錐面60、62によって構
成されている。他方、転動体16は球である。その結果、
転動体16と２つの凹円錐面60、62とは転動体の円周方向
に線接触することとなる。この実施例のその他の構成
は、第１図および第２図に示した実施例と同じである。In the embodiment shown in FIG. 4, the engagement part 13a of the inner part 12 is provided.
Is formed by two concave conical surfaces 60 and 62. On the other hand, the rolling elements 16 are spheres. as a result,
The rolling element 16 and the two concave conical surfaces 60, 62 are in line contact with each other in the circumferential direction of the rolling element. Other configurations of this embodiment are the same as those of the embodiment shown in FIGS. 1 and 2.
第４図に示すように、転動体16と接する凹曲面が２つ
の凹円錐面からなる場合、凹曲面の製作が容易になる。
凹曲面が凹球面であり、しかも転動体が球である場合、
回転トルクを伝達するという自在継手本来の機能に鑑み
ると、面圧を小さくすることができる利点がある。反
面、凹球面の製作に精度が要求され、製作が複雑になる
が、凹曲面が凹円錐面であれば、製作上は有利である。As shown in FIG. 4, when the concave surface in contact with the rolling element 16 comprises two concave conical surfaces, the production of the concave surface becomes easy.
If the concave curved surface is a concave spherical surface and the rolling element is a sphere,
In view of the inherent function of the universal joint that transmits rotational torque, there is an advantage that the surface pressure can be reduced. On the other hand, precision is required for the production of the concave spherical surface, which complicates the production. However, if the concave curved surface is a concave conical surface, it is advantageous in production.
第５図に示す実施例では、内側部品12の係合部13aの
凹曲面は２つの凹円錐面60、62からなり、転動体16は、
球の赤道部分が均一な直径の円形輪郭面17aであり、残
る部分が球面17bである形体に形成されている。In the embodiment shown in FIG. 5, the concave curved surface of the engaging portion 13a of the inner part 12 comprises two concave conical surfaces 60 and 62, and the rolling element 16
The equatorial portion of the sphere is formed into a circular contour surface 17a having a uniform diameter, and the remaining portion is formed into a shape having a spherical surface 17b.
第４図および第５図に示したのは、転動体が内側部品
の係合部の凹曲面に係合する場合であるが、転動体が第
３図に示すように、外側部品の係合部の凹曲面に係合す
る場合でも、第４図および第５図の形体を適用すること
ができる。FIGS. 4 and 5 show the case where the rolling element engages with the concave curved surface of the engaging portion of the inner part, but the rolling element engages with the outer part as shown in FIG. 4 and 5 can be applied even when engaging the concave curved surface of the portion.
前記実施例では、凹曲面は凹球面または凹円錐面であ
るが、これに代え、凹楕円面、凹放物面、凹多角面等に
よって凹曲面を形成することもできる。凹楕円面および
凹放物面は、転動体と全面にわたる面接触ではないが部
分的に面接触し、凹多角面は点接触する。凹球面と球と
の接触のような完全な面接触は部分的な面接触より、部
分的な面接触は線接触より、そして線接触は点接触より
面圧が小さくなるが、加工上では、完全な面接触が一番
難しく、次いで部分的な面接触、線接触、点接触の順に
易しくなる。そこで、伝達すべき回転トルクの大きさに
応じて、完全な面接触とするか、部分的な面接触とする
か、線接触とするかまたは点接触とするかを定め、凹曲
面を選定することが好ましい。In the above embodiment, the concave curved surface is a concave spherical surface or a concave conical surface. Alternatively, the concave curved surface may be formed by a concave elliptical surface, a concave paraboloid, a concave polygonal surface, or the like. The concave elliptical surface and the concave paraboloid are not in surface contact with the rolling element but are in partial surface contact, but are in point contact with the concave polygonal surface. Complete surface contact, such as the contact between a concave sphere and a sphere, has less surface pressure than partial surface contact, partial surface contact has less surface pressure than line contact, and line contact has less surface pressure than point contact. Complete surface contact is the most difficult, followed by partial surface contact, line contact, and point contact. Therefore, depending on the magnitude of the rotational torque to be transmitted, it is determined whether to make complete surface contact, partial surface contact, line contact or point contact, and select a concave curved surface. Is preferred.
内側部品12の各係合部13aを外側部品14の係合部15aの
凹所28に差し込み、外側部品14の内部にクリースを封入
し、外側部品14の開口をブーツで覆って、自在継手10は
使用状態とされる。軸18をたとえば駆動側に、軸30を従
動側に結合する。Insert each engagement part 13a of the inner part 12 into the recess 28 of the engagement part 15a of the outer part 14, seal the crease inside the outer part 14, cover the opening of the outer part 14 with boots, and Is used. The shaft 18 is connected to, for example, the driving side, and the shaft 30 is connected to the driven side.
軸18から伝えられた回転トルクは、内側部品12の係合
部13a、凹曲面22、転動体16、外側部品14の係合部15aへ
この順で伝えられ、軸30に取り出される。The rotating torque transmitted from the shaft 18 is transmitted to the engaging portion 13a of the inner component 12, the concave curved surface 22, the rolling element 16, and the engaging portion 15a of the outer component 14 in this order, and is taken out to the shaft 30.
自在継手10がジョイント角をもって回転されるとき、
転動体16が外側部品14の凹所28内を軸線方向へ移動し、
同時に移動体16と外側部品14との径方向の相対移動が生
ずる。これら移動は転動体16の転がりによって行われる
ので、摩擦抵抗は少ない。When the universal joint 10 is rotated with the joint angle,
The rolling element 16 moves in the recess 28 of the outer part 14 in the axial direction,
At the same time, the relative movement between the moving body 16 and the outer part 14 in the radial direction occurs. Since these movements are performed by the rolling of the rolling elements 16, the frictional resistance is small.
第１図は自在継手の軸線に直交する面で切断した断面
図、第２図は第１図の２−２線に沿って切断した断面
図、第３図ないし第５図は自在継手の別の実施例の第１
図と同様な断面図で、一部のみを示してある。 10、40:自在継手、 12、42:内側部品、 13a、15a、43、45:係合部、 14、44:外側部品、 16、46:転動体、 18、30:軸、 28、50:凹所。1 is a sectional view taken along a plane perpendicular to the axis of the universal joint, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIGS. First of the embodiment of
FIG. 3 is a cross-sectional view similar to the drawing, and shows only a part. 10, 40: Universal joint, 12, 42: Inner parts, 13a, 15a, 43, 45: Engagement part, 14, 44: Outer parts, 16, 46: Rolling element, 18, 30: Shaft, 28, 50: Recess.
Claims (1)
径方向へ伸びる３つの第１の係合部が設けられた、第１
の軸と一体となった内側部品と、該内側部品を取り囲む
外側部品であって前記各係合部を受け入れる軸線方向へ
伸びる凹所を有する第２の係合部が円周方向に等間隔を
おいて設けられた、第２の軸と一体となった外側部品
と、前記第１の係合部と前記第２の係合部とに接触する
ように前記各凹所内に配置された転動体とを含み、前記
第１の係合部および前記第２の係合部の一方の前記転動
体と接触する面は凹曲面であり、前記第１の係合部およ
び前記第２の係合部の他方の前記転動体と接触する面
は、前記第１の軸または前記第２の軸の軸線方向へ伸び
ている平面である、自在継手。A first engaging portion provided at equal intervals in a circumferential direction and extending in a radial direction;
An inner part integrated with the shaft of the first part, and an outer part surrounding the inner part, the second engaging part having a recess extending in the axial direction for receiving each of the engaging parts, are equally spaced in the circumferential direction. And a rolling element disposed in each of the recesses so as to come into contact with the first engagement portion and the second engagement portion. And a surface of one of the first engagement portion and the second engagement portion that comes into contact with the rolling element is a concave curved surface, and the first engagement portion and the second engagement portion The universal joint, wherein a surface of the other of the rolling elements that comes into contact with the rolling element is a plane extending in an axial direction of the first shaft or the second shaft.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63012485A JP2590508B2 (en) | 1988-01-25 | 1988-01-25 | Universal joint |
| US07/299,066 US4954120A (en) | 1988-01-25 | 1989-01-19 | Slidable constant velocity joint |
| DE8989300517T DE68901542D1 (en) | 1988-01-25 | 1989-01-19 | UNIVERSAL JOINT. |
| EP89300517A EP0329278B1 (en) | 1988-01-25 | 1989-01-19 | Universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63012485A JP2590508B2 (en) | 1988-01-25 | 1988-01-25 | Universal joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01188718A JPH01188718A (en) | 1989-07-28 |
| JP2590508B2 true JP2590508B2 (en) | 1997-03-12 |
Family
ID=11806700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63012485A Expired - Fee Related JP2590508B2 (en) | 1988-01-25 | 1988-01-25 | Universal joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2590508B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2548176Y2 (en) * | 1989-10-27 | 1997-09-17 | エヌティエヌ株式会社 | Unit type coupling |
| US5256107A (en) * | 1990-02-08 | 1993-10-26 | Toyota Jidosha Kabushiki Kaisha | Sliding type constant velocity universal joint having regulating device for maintaining position of roller constant |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56160322A (en) * | 1980-05-06 | 1981-12-10 | Shiraishi Chuo Kenkyusho:Kk | Manufacture of calcium carbonate with superior dispersibility |
| FR2537227B1 (en) * | 1982-12-06 | 1987-08-21 | Centre Techn Ind Mecanique | BALL TRANSMISSION BETWEEN TWO SHAFTS |
| JPS6045926U (en) * | 1983-09-05 | 1985-04-01 | トヨタ自動車株式会社 | constant velocity universal joint |
-
1988
- 1988-01-25 JP JP63012485A patent/JP2590508B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01188718A (en) | 1989-07-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |