JPS632665Y2 - - Google Patents
Info
- Publication number
- JPS632665Y2 JPS632665Y2 JP1984148003U JP14800384U JPS632665Y2 JP S632665 Y2 JPS632665 Y2 JP S632665Y2 JP 1984148003 U JP1984148003 U JP 1984148003U JP 14800384 U JP14800384 U JP 14800384U JP S632665 Y2 JPS632665 Y2 JP S632665Y2
- Authority
- JP
- Japan
- Prior art keywords
- cage
- ball
- inner member
- constant velocity
- velocity universal
- 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
Links
- 238000006073 displacement reaction Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Pivots And Pivotal Connections (AREA)
- Bearings For Parts Moving Linearly (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は自動車の駆動軸に使用される等速自
在継手に関するもので、特に駆動軸と従動軸との
等速性を維持しつつ両者の角度変位や軸方向の相
対変位を許容し得るようになした等速自在継手に
関するものである。[Detailed description of the invention] Industrial field of application This invention relates to a constant velocity universal joint used in the drive shaft of an automobile, and is particularly concerned with the angular displacement of the drive shaft and the driven shaft while maintaining their constant velocity. This invention relates to a constant velocity universal joint that can tolerate relative displacement in the axial and axial directions.
従来の技術
前輪駆動車や独立懸架方式の後輪駆動車の駆動
軸には角度変位及び軸方向変位を許容する等速自
在継手が用いられている。従来の等速自在継手
は、走行時や停止時のアイドリング中等のように
駆動軸のトルクを伝達し乍ら角度変位や軸方向変
位を生ずるような使用状態では、変位時の継手内
部のスライド抵抗が大きい為、エンジン側からの
振動が車体へ伝達されて乗員に不快感を与えると
いつた問題があつた。2. Description of the Related Art A constant velocity universal joint that allows angular displacement and axial displacement is used for the drive shaft of front-wheel drive vehicles and rear-wheel drive vehicles with independent suspension. Conventional constant velocity universal joints are used in situations where angular or axial displacement occurs while transmitting the torque of the drive shaft, such as when running or idling when stopped, resulting in sliding resistance inside the joint during displacement. Because of the large amount of vibration, there was a problem in that vibrations from the engine were transmitted to the vehicle body, causing discomfort to the passengers.
即ち、従来の等速自在継手は第２図に示す様
に、直線状案内溝２を設けた円筒状内表面３を備
える中空外方部材１と、この外方部材１の案内溝
２と協働してボールトラツクを形成する溝５を設
け、且つ、少なくとも一部を部分球面とした外表
面６を備える内方部材４と、各溝２，５に配され
るトルク伝達ボール７と、トルク伝達ボール７を
収容するボールポケツト９を備え、且つ、外方部
材１の円筒状内表面３及び内方部材４の部分球面
状外表面６にて夫々案内され、継手軸上において
ボール中心線の両側に等量ずらせて配置した曲率
中心を有する部分球面状内外表面１０，１１を備
えたケージ８とで構成され、内方部材４の外表面
６とケージ８の内表面１０の半径を同一に形成し
て球面接触させると共にボール７をケージ８のボ
ールポケツト９へ適当な締代を持たせて収容させ
たものである。従つて、等速自在継手に振動が作
用すると、外方部材１とボール７との間、内方部
材４とボール７との間、外方部材１とケージ８と
の間ですべりを生じることになるが、ボール７は
回転することができず、スライド抵抗が大きかつ
た。 That is, the conventional constant velocity universal joint, as shown in FIG. an inner member 4 provided with a groove 5 that acts to form a ball track and an outer surface 6 having at least a partially spherical surface; a torque transmitting ball 7 disposed in each groove 2, 5; It is provided with a ball pocket 9 for accommodating a transmission ball 7, and is guided by the cylindrical inner surface 3 of the outer member 1 and the partially spherical outer surface 6 of the inner member 4, so that the ball center line is aligned with the joint axis. The cage 8 has partially spherical inner and outer surfaces 10 and 11 with centers of curvature arranged on both sides with equal distances, and the outer surface 6 of the inner member 4 and the inner surface 10 of the cage 8 have the same radius. The balls 7 are formed so that they are in spherical contact, and the balls 7 are housed in the ball pockets 9 of the cage 8 with an appropriate tightness. Therefore, when vibration acts on the constant velocity universal joint, slipping may occur between the outer member 1 and the ball 7, between the inner member 4 and the ball 7, and between the outer member 1 and the cage 8. However, the ball 7 could not rotate and the sliding resistance was large.
そこで、本出願人は、ボール７の回転を容易に
してスライド抵抗を小さくした等速自在継手を提
案した。これは第３図に示す様に、内方部材４の
外表面６の半径ｒをケージ８の内表面１０の半径
Ｒより小さく（Ｒ＞ｒ）設定して、内方部材４と
ケージ８との間に所定の軸方向隙間δを形成した
ものである。 Therefore, the present applicant proposed a constant velocity universal joint in which the rotation of the ball 7 is facilitated and the sliding resistance is reduced. This is done by setting the radius r of the outer surface 6 of the inner member 4 to be smaller than the radius R of the inner surface 10 of the cage 8 (R>r), as shown in FIG. A predetermined axial clearance δ is formed between the two.
上記構造のものであれば、内方部材４とケージ
８とは、軸方向隙間δにより相対的な軸方向の比
較的小さな移動が可能となる。しかし、ケージ８
のボールポケツト９にボール７を適当な締代でも
つて、保持している為に依然としてボール７の転
がりが難しい。 With the structure described above, the inner member 4 and the cage 8 can move relatively small relative to each other in the axial direction due to the axial clearance δ. However, cage 8
Since the ball 7 is held in the ball pocket 9 with an appropriate tightness, it is still difficult for the ball 7 to roll.
考案が解決しようとする問題点
上記等速自在継手では、ケージ８のボールポケ
ツト９にボール７を適当な締代でもつて保持して
いる為、依然としてボール７の転がりが難しく、
従つて、等速自在継手に回転トルクが作用してい
る状態では、スライド抵抗は、外方部材１とボー
ル７の接触部及び内方部材４とボール７との接触
部でのすべり抵抗で支配され、スライド抵抗の低
減化が十分とはいえなかつた。また、この等速自
在継手では、内方部材４の外表面６の半径ｒをケ
ージ８の内表面１０の半径Ｒより小さく設定した
ので、内方部材４とケージ８とが線接触するよう
になり軸方向隙間δにより内方部材４がケージ８
に対して軸方向に相対移動すると、内方部材４と
ケージ８との線接触部でくさび効果により内方部
材４がケージ８にロツクされるから、スライド抵
抗が不安定にならざるを得ないと共に、両者４，
８の接触部分での偏摩耗が起こると云う問題があ
る。Problems to be Solved by the Invention In the constant velocity universal joint described above, since the ball 7 is held in the ball pocket 9 of the cage 8 with an appropriate tightness, it is still difficult for the ball 7 to roll.
Therefore, when rotational torque is applied to the constant velocity universal joint, the sliding resistance is dominated by the sliding resistance at the contact area between the outer member 1 and the ball 7 and the contact area between the inner member 4 and the ball 7. Therefore, it could not be said that the reduction in sliding resistance was sufficient. In addition, in this constant velocity universal joint, the radius r of the outer surface 6 of the inner member 4 is set smaller than the radius R of the inner surface 10 of the cage 8, so that the inner member 4 and the cage 8 are in line contact. The inner member 4 is connected to the cage 8 due to the axial clearance δ.
When the inner member 4 moves relative to the cage 8 in the axial direction, the inner member 4 is locked to the cage 8 due to a wedge effect at the line contact portion between the inner member 4 and the cage 8, so that the sliding resistance inevitably becomes unstable. Together with both 4,
There is a problem that uneven wear occurs at the contact portion of No.8.
問題点を解決するための手段
この考案は、直線状案内溝を設けた円筒状内表
面を備える外方部材と、この外方部材の前記案内
溝と協働してボールトラツクを形成する溝を設
け、且つ、少なくとも一部を部分球面状とした外
表面を備える内方部材と、前記各溝に配されたト
ルク伝達ボールと、前記トルク伝達ボールを収容
するボールポケツトを備え、且つ、前記外方部材
の円筒状内表面及び内方部材の部分球面状外表面
にて夫々案内される内外表面を備えたケージとよ
りなる等速自在継手において、前記ケージの内表
面を、その中央部の軸方向の任意長さの円筒面
と、その両側の前記内方部材の外表面と同一半径
の部分球面とを結んで形成し、且つ、前記トルク
伝達ボールと前記ケージのボールポケツトとの間
に、ポケツト隙間を設けたものである。Means for Solving the Problems This invention includes an outer member having a cylindrical inner surface provided with a linear guide groove, and a groove that cooperates with the guide groove of the outer member to form a ball track. an inner member provided with an outer surface having at least a partially spherical shape, torque transmission balls disposed in each of the grooves, and a ball pocket for accommodating the torque transmission balls; In a constant velocity universal joint consisting of a cage having inner and outer surfaces guided by a cylindrical inner surface of the inner member and a partially spherical outer surface of the inner member, the inner surface of the cage is guided by the axis of the central part of the cage. a cylindrical surface having an arbitrary length in the direction and a partial spherical surface having the same radius as the outer surface of the inner member on both sides thereof, and between the torque transmission ball and the ball pocket of the cage, It has a pocket gap.
実施例
第１図はこの考案の一実施例を示す要部断面図
で、１５は等速自在継手の外方部材、１６は内方
部材、１７はケージ、１８はトルク伝達ボールで
ある。そして、外方部材１５は円筒状内表面１９
に直線状案内溝２０を備えている。また、内方部
材１６はケージ１７の内表面２４を案内する部分
球面状外表面２１を備え、この外表面２１に外方
部材１５の案内溝２０とでボールトラツクを形成
する溝２２を形成してある。ケージ１７は周方向
に等間隔にトルク伝達ボール１８を収容するボー
ルポケツト２３を形成し、かつ、内外表面２４，
２５を備えている。このケージ１７は内表面２４
を、その中央部の軸方向の長さａなる円筒面２６
と、その両側の内方部材１６の外表面２１と同一
半径Ｒ＝ｒの部分球面２７，２７とを結んで形成
し、内方部材１６の軸方向変位を許容する軸方向
隙間δ1を形成している。また、ケージ１７のボー
ルポケツト２３とトルク伝達ボール１８との間
に、適当な間隔のポケツト隙間δ2を設けてある。
このポケツト隙間δ2はボール１８の拘束を解除す
ると共にボール１８とケージ１７との衝突時の影
響を受けないように、５〜50μの範囲内に設定す
る。即ち、ポケツト隙間δ2を50μ以上にすると、
ボール１８とケージ１７との衝突時の打音が大き
くなると共に、衝突時の衝撃によりケージ１７の
安定性が損なわれて振動が助長されると云つた問
題が生じる為、ポケツト隙間δ2の上限を50μ以下
に設定する。また、下限はボール１８の拘束を解
除できればよいので零に設定しても良いが、製造
管理上ポケツト隙間δ2を確実にする為、5μ以上に
設定する。FIG. 1 is a cross-sectional view of an essential part of an embodiment of the present invention. Reference numeral 15 denotes an outer member of a constant velocity universal joint, 16 an inner member, 17 a cage, and 18 a torque transmission ball. The outer member 15 has a cylindrical inner surface 19.
The inner member 16 has a partially spherical outer surface 21 which guides the inner surface 24 of the cage 17, and a groove 22 is formed in the outer surface 21 to form a ball track together with the guide groove 20 of the outer member 15. The cage 17 forms ball pockets 23 at equal intervals in the circumferential direction for accommodating the torque transmitting balls 18, and the inner and outer surfaces 24,
25. The cage 17 has an inner surface 24
The cylindrical surface 26 has an axial length a at its center.
and partial spherical surfaces 27, 27 of the same radius R = r as the outer surface 21 of the inner member 16 on both sides thereof, forming an axial gap δ 1 which allows axial displacement of the inner member 16. In addition, a pocket gap δ 2 of an appropriate interval is provided between the ball pockets 23 of the cage 17 and the torque transmitting balls 18.
This pocket gap δ 2 is set within the range of 5 to 50 μ so as to release the constraint of the ball 18 and to avoid the influence of the collision between the ball 18 and the cage 17. In other words, if the pocket gap δ 2 is set to 50 μ or more,
The upper limit of the pocket gap δ2 is set to 50μ or less because the impact of the collision between the ball 18 and the cage 17 will increase the sound of the collision and the cage 17 will lose its stability, promoting vibration. The lower limit may be set to zero as long as it is possible to release the constraint on the ball 18, but it is set to 5μ or more to ensure the pocket gap δ2 for manufacturing control purposes.
上記構造の等速自在継手は、トルクが負荷され
た状態で、エンジン側からの振動が作用した場
合、内方部材１６とケージ１７とは軸方向隙間δ1
により相対的な軸方向の比較的小さな移動が可能
となり、しかも、ボール１８はケージ１７のボー
ルポケツト２３との間にポケツト隙間δ2が形成さ
れているので自由に転がることができるから、外
方部材１５と内方部材１６との軸方向変位並びに
角度変位の時の継手内部のスライド抵抗を非常に
小さくなることができ、かつ、発生する振動を軸
方向隙間δ1並びにポケツト隙間δ2により吸収して
車体への伝達を防止する。また、この考案の等速
自在継手では、外方部材１５と内方部材１６との
軸方向変位の際に、内方部材１６がケージ１７に
対して軸方向に相対移動した場合、内方部材１６
の外表面２１とケージ１７の内表面２４の部分球
面２７，２７とは、半径が等しくて球面接触する
ので、内方部材１６がケージ１７にロツクされる
心配がなく、この為、スライド抵抗が安定して変
位が極めてスムーズになされると共に、両者１
６，１７の接触部分での偏摩耗が起こらない。 In the constant velocity universal joint having the above structure, when vibration from the engine side is applied under torque, the axial clearance between the inner member 16 and the cage 17 is δ 1
This allows a relatively small movement in the relative axial direction, and since the pocket gap δ 2 is formed between the ball 18 and the ball pocket 23 of the cage 17, the ball 18 can roll freely. The sliding resistance inside the joint during axial and angular displacement between the member 15 and the inner member 16 can be extremely reduced, and the generated vibrations can be absorbed by the axial clearance δ 1 and the pocket clearance δ 2. to prevent transmission to the vehicle body. Further, in the constant velocity universal joint of this invention, when the inner member 16 moves relative to the cage 17 in the axial direction when the outer member 15 and the inner member 16 are displaced in the axial direction, the inner member 16
Since the outer surface 21 of the cage 17 and the partial spherical surfaces 27, 27 of the inner surface 24 of the cage 17 have the same radius and are in spherical contact, there is no fear that the inner member 16 will be locked to the cage 17, and therefore the sliding resistance is reduced. The displacement is stable and extremely smooth, and both 1
Uneven wear does not occur at the contact portions 6 and 17.
考案の効果
この考案によれば継手内部のスライド抵抗が非
常に小さくなるので、外方部材と内方部材との間
で相対的な角度変位や軸方向変位を生じた場合
に、その変位が極めてスムーズになされると共
に、当該等速自在継手を自動車の駆動軸に用いる
と、オートマチツクトランスミツシヨン車のアイ
ドリング時等のようにトルクが負荷された状態で
エンジン側から振動が伝達されても、これを吸収
して車体への伝達を防止するので、車体の振動を
抑えることができる。また、内方部材とケージと
は球面接触するから、内方部材がケージにロツク
する心配がなくてスライド抵抗が安定すると共
に、両者の接触部分での偏摩耗も起こらない。Effects of the invention According to this invention, the sliding resistance inside the joint becomes extremely small, so when a relative angular displacement or axial displacement occurs between the outer member and the inner member, the displacement is extremely small. In addition, when the constant velocity universal joint is used in the drive shaft of an automobile, even if vibrations are transmitted from the engine side under torque load such as when idling an automatic transmission vehicle, Since it absorbs this vibration and prevents it from being transmitted to the vehicle body, it is possible to suppress vibrations in the vehicle body. Furthermore, since the inner member and the cage are in spherical contact, there is no fear that the inner member will lock onto the cage, resulting in stable sliding resistance and uneven wear at the contact portion between the two.
第１図はこの考案の等速自在継手の構造を示す
要部断面図、第２図は一般的な等速自在継手の構
造を示す断面図、第３図は継手内部のスライド抵
抗を小さくした従来の等速自在継手の構造を示す
要部断面図である。
１５……外方部材、１６……内方部材、１７…
…ケージ、１８……トルク伝達ボール、１９……
外方部材の内表面、２０……直線状案内溝、２１
……内方部材の外表面、２２……溝、２３……ボ
ールポケツト、２４……ケージの内表面、２５…
…ケージの外表面、２６……ケージ内表面の円筒
面、２７，２７……ケージ内表面の部分球面、δ1
……軸方向隙間、δ2……ポケツト隙間、ｒ……内
方部材外表面の半径、Ｒ……ケージ内表面の部分
球面の半径。
Figure 1 is a cross-sectional view of the main parts showing the structure of the constant velocity universal joint of this invention, Figure 2 is a cross-sectional view showing the structure of a general constant velocity universal joint, and Figure 3 is a cross-sectional view of the structure of the constant velocity universal joint of this invention. FIG. 2 is a cross-sectional view of main parts showing the structure of a conventional constant velocity universal joint. 15... Outer member, 16... Inner member, 17...
...Cage, 18...Torque transmission ball, 19...
Inner surface of outer member, 20... linear guide groove, 21
...Outer surface of inner member, 22...Groove, 23...Ball pocket, 24...Inner surface of cage, 25...
...outer surface of the cage, 26...cylindrical surface of the inner surface of the cage, 27, 27...partial spherical surface of the inner surface of the cage, δ 1
...Axis clearance, δ 2 ...Pocket clearance, r...Radius of the outer surface of the inner member, R...Radius of the partial spherical surface of the inner surface of the cage.
Claims (1)
方部材と、この外方部材の前記案内溝と協働して
ボールトラツクを形成する溝を設け、且つ、少な
くとも一部を部分球面状とした外表面を備える内
方部材と、前記各溝に配されたトルク伝達ボール
と、前記トルク伝達ボールを収容するボールポケ
ツトを備え、且つ、前記外方部材の円筒状内表面
及び内方部材の部分球面状外表面にて夫々案内さ
れ、継手軸上においてボール中心線の両側にずら
せて配置した曲率中心を有する部分球面状の内外
表面を備えたケージとよりなる等速自在継手にお
いて、前記ケージの内表面を、その中央部の軸方
向の任意長さの円筒面と、その両側の前記内方部
材の外表面と同一半径の部分球面とを結んで形成
し、且つ、前記トルク伝達ボールと前記ケージの
ボールポケツトとの間に、軸方向に５〜50μのポ
ケツト隙間を設けたことを特徴とする等速自在継
手。 an outer member having a cylindrical inner surface provided with a linear guide groove; a groove cooperating with the guide groove of the outer member to form a ball track; and at least a portion of the outer member having a partially spherical shape. a cylindrical inner surface of the outer member and a cylindrical inner surface of the inner member; A constant velocity universal joint comprising a cage having partially spherical inner and outer surfaces each guided by a partially spherical outer surface and having a center of curvature shifted on both sides of the ball center line on the joint axis, the cage comprising: the inner surface of the inner member is formed by connecting a cylindrical surface of an arbitrary length in the axial direction at the center and partial spherical surfaces on both sides thereof having the same radius as the outer surface of the inner member, and A constant velocity universal joint characterized in that a pocket gap of 5 to 50 μm is provided in the axial direction between the cage and the ball pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984148003U JPS632665Y2 (en) | 1984-09-28 | 1984-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984148003U JPS632665Y2 (en) | 1984-09-28 | 1984-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6161329U JPS6161329U (en) | 1986-04-25 |
| JPS632665Y2 true JPS632665Y2 (en) | 1988-01-22 |
Family
ID=30706224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984148003U Expired JPS632665Y2 (en) | 1984-09-28 | 1984-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS632665Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100797A (en) * | 2005-10-03 | 2007-04-19 | Ntn Corp | Slide type constant velocity universal joint |
| WO2023100522A1 (en) * | 2021-11-30 | 2023-06-08 | Ntn株式会社 | Sliding-type constant-velocity joint |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626747Y2 (en) * | 1986-08-07 | 1994-07-20 | エヌティエヌ株式会社 | Car propulsion axis |
| JP2578286Y2 (en) * | 1992-03-18 | 1998-08-06 | 日本精工株式会社 | Constant velocity joint |
| JP4959848B2 (en) * | 2011-03-15 | 2012-06-27 | Ｎｔｎ株式会社 | Sliding constant velocity universal joint |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5357341A (en) * | 1976-11-02 | 1978-05-24 | Ntn Toyo Bearing Co Ltd | Uniform speed universal joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52157121U (en) * | 1976-05-24 | 1977-11-29 |
-
1984
- 1984-09-28 JP JP1984148003U patent/JPS632665Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5357341A (en) * | 1976-11-02 | 1978-05-24 | Ntn Toyo Bearing Co Ltd | Uniform speed universal joint |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100797A (en) * | 2005-10-03 | 2007-04-19 | Ntn Corp | Slide type constant velocity universal joint |
| WO2023100522A1 (en) * | 2021-11-30 | 2023-06-08 | Ntn株式会社 | Sliding-type constant-velocity joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6161329U (en) | 1986-04-25 |
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