JPH0625567B2 - Constant velocity joint - Google Patents

Constant velocity joint

Info

Publication number
JPH0625567B2
JPH0625567B2 JP3604886A JP3604886A JPH0625567B2 JP H0625567 B2 JPH0625567 B2 JP H0625567B2 JP 3604886 A JP3604886 A JP 3604886A JP 3604886 A JP3604886 A JP 3604886A JP H0625567 B2 JPH0625567 B2 JP H0625567B2
Authority
JP
Japan
Prior art keywords
ball
center
constant velocity
velocity joint
ball grooves
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 - Lifetime
Application number
JP3604886A
Other languages
Japanese (ja)
Other versions
JPS62194028A (en
Inventor
恵二 岩崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Toyo Bearing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NTN Toyo Bearing Co Ltd filed Critical NTN Toyo Bearing Co Ltd
Priority to JP3604886A priority Critical patent/JPH0625567B2/en
Publication of JPS62194028A publication Critical patent/JPS62194028A/en
Publication of JPH0625567B2 publication Critical patent/JPH0625567B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F16D3/22—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 the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—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 the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D3/2237—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 the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts where the grooves are composed of radii and adjoining straight lines, i.e. undercut free [UF] type 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
    • F16D3/20—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
    • F16D3/22—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 the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—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 the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D3/224—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 the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere
    • F16D3/2245—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 the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere where the groove centres are offset from the joint centre

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Transmission Devices (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention 【産業上の利用分野】[Industrial applications]

この発明は、自動車のステアリング軸等に用いられる等
速ジョイントに関するものである。The present invention relates to a constant velocity joint used for a steering shaft of an automobile.

【従来の技術およびその問題点】 自動車のステアリング軸等には、従来十字形ユニバーサ
ルジョイントが多く使用されている。このステアリング
軸等では振動、騒音を防止するためにジョイントの回転
方向のガタを極力抑える必要がある。ところが、十字形
クロスジョイントにおいては軸受部のスキマの存在によ
って、回転方向のガタが避けられなく振動等の問題が残
っている。また、十字形ユニバーサルジョイントは、作
動角によりトルク変動が生じる為、この点についても問
題が残っていた。2. Description of the Related Art Conventionally, cruciform universal joints are often used for steering shafts of automobiles. In this steering shaft and the like, it is necessary to suppress play in the rotational direction of the joint as much as possible in order to prevent vibration and noise. However, in the cross-shaped cross joint, due to the existence of the clearance in the bearing portion, the play in the rotation direction cannot be avoided, and the problem such as vibration remains. In addition, since the cross-shaped universal joint causes torque fluctuation depending on the operating angle, there remains a problem in this respect as well.

【発明の目的】[Object of the Invention]

この発明の目的は、ジョイントの回転方向のガタをなく
し振動を防止した等速ジョイントを提供するものであ
る。An object of the present invention is to provide a constant velocity joint that eliminates play in the rotational direction of the joint and prevents vibration.

【発明の構成】[Constitution of the invention]

上記の目的を達成するために、この発明は、内輪、外
輪、トルク伝達ボールおよびケージとからなる等速ジョ
イントにおいて、内外輪のボール溝におけるトルク伝達
ボールの接触線を順次逆方向に傾斜させ、かつ各ボール
溝とトルク伝達ボールとの間に予圧を付与した構成とし
たものである。In order to achieve the above object, the present invention, in a constant velocity joint consisting of an inner ring, an outer ring, a torque transmitting ball and a cage, the contact lines of the torque transmitting balls in the ball grooves of the inner and outer rings are sequentially inclined in opposite directions, In addition, a preload is applied between each ball groove and the torque transmitting ball.

【作用】[Action]

上記の構成から、本発明の等速ジョイントは、正逆両方
向の回転に対して回転方向のガタがなく、又振動、騒音
が防止できる。With the above structure, the constant velocity joint of the present invention has no play in the rotational direction with respect to rotation in both the forward and reverse directions, and can prevent vibration and noise.

【第１実施例】 第１図、第２図および第３図に示す第１実施例の等速ジ
ョイントは、外輪１、内輪２、トルク伝達ボール３およ
びケージ４とからなる。外輪１は凹球面５と曲線状のボ
ール溝６が形成されており、内輪２には凸球面７と外輪
１のボール溝６に協働するボール溝８が形成されてい
る。内外輪の凸球面７と凹球面５との間にケージ４が配
置されており、ケージ４の内外の凹球面９および凸球面
１０は、それぞれ内輪２の凸球面７および外輪１の凹球
面５とで接触案内されている。ケージ４には、ポケット
１１が設けられており、協働するボール溝６、８に配置
されたボール３を収容する。 内外輪のボール溝８、６は、等速性を得るために、ボー
ル中心Ｏより軸線方向にオフセットされた点Ａ、Ｂを曲
率中心とする。 第２図は、ボール中心面Ｉ−Ｉでの横断面を示すもので
あり、内外輪のボール溝８、６におけるトルク伝達ボー
ル３の接触線１２、12′は、回転方向に隣接するボール
溝において反対方向に傾斜しており、かつ、各ボール溝
８、６とトルク伝達ボール３との間に予圧が付与されて
いる。 第３図は、ボール溝８、６とボール３との接触部の拡大
図であり、図に示すように外輪１のボール溝６の中心線
１３、13′と内輪２のボール溝８の中心線１４、14′が
ずらされている。予圧量は、ボール３の大きさにより加
減する。予圧量はボール１個当たりの定格トルクの１０
％程度が望ましい。また、ボール３の接触線の傾き（接
触角）αは設計上４５°程度が望ましい。 尚、内外輪のボール溝８、６は、その横断面が楕円形
状、あるいはボール径より若干大きくした円形状となっ
ている。First Embodiment The constant velocity joint of the first embodiment shown in FIGS. 1, 2 and 3 comprises an outer ring 1, an inner ring 2, a torque transmitting ball 3 and a cage 4. The outer ring 1 has a concave spherical surface 5 and a curved ball groove 6, and the inner ring 2 has a convex spherical surface 7 and a ball groove 8 that cooperates with the ball groove 6 of the outer ring 1. The cage 4 is arranged between the convex spherical surface 7 and the concave spherical surface 5 of the inner and outer rings. The concave spherical surface 9 and the convex spherical surface 10 inside and outside the cage 4 are the convex spherical surface 7 of the inner ring 2 and the concave spherical surface 5 of the outer ring 1, respectively. It is in contact with and is guided. The cage 4 is provided with pockets 11 for accommodating the balls 3 arranged in cooperating ball grooves 6, 8. The ball grooves 8 and 6 of the inner and outer rings have their centers of curvature at points A and B which are offset from the center O of the ball in the axial direction in order to obtain uniform velocity. FIG. 2 shows a cross section taken along the ball center plane I-I, in which the contact lines 12 and 12 'of the torque transmitting balls 3 in the ball grooves 8 and 6 of the inner and outer rings are adjacent to each other in the rotational direction. In the opposite direction, and a preload is applied between the ball grooves 8 and 6 and the torque transmitting ball 3. FIG. 3 is an enlarged view of the contact portion between the ball grooves 8 and 6 and the ball 3. As shown in the figure, the center lines 13 and 13 'of the ball groove 6 of the outer ring 1 and the center of the ball groove 8 of the inner ring 2 are shown. The lines 14, 14 'are offset. The amount of preload varies depending on the size of the ball 3. The amount of preload is 10 of the rated torque per ball.
% Is preferable. The inclination (contact angle) α of the contact line of the ball 3 is preferably about 45 ° in design. The ball grooves 8 and 6 of the inner and outer rings have an elliptical cross section or a circular shape slightly larger than the ball diameter.

【第２実施例】 第４図はは第２の実施例を示す。この実施例は、ボール
溝２６、２８が冷間鍜造での加工が容易にできるよう、
ボール溝２６、２８がアンダーカットなしに形成された
等速ジョイントの例である。外輪２１のボール溝２６
は、略ジョイントの中央より奥側がＢを曲率中心とする
曲線状ボール溝２６ａとなっており、開口側は、ボール
溝２６ａに接続する直線状ボール２６ｂとなっている。
また、内輪２２のボール溝２８はＡを曲率中心とする曲
線状ボール溝２８ａと直線状ボール溝２８ｂとからなっ
ている。ケージ２４の内外球面２９、３０の曲率中心
Ｃ、Ｄはボール中心Ｏから反対側に等量ずらされてい
る。ボール中心を含む横断面II−IIにおけるボール溝２
９、３０とボール２３との接触状態は第１実施例と同様
であり、説明を省略する。 また、図面には内外輪の曲線状ボール溝の曲率中心およ
びケージの内外球面の曲率中心を共にボール中心Ｏから
反対側にずらせた構造の等速ジョイントを示したが、内
外輪の曲線状ボール溝の曲線中心はずらせずボール中心
Ｏに一致させ、ケージの内外球面の曲率中心のみをボー
ル中心Ｏから反対側に等量ずらちせた構造の場合、ある
いはケージの内外球面の曲率中心はずらせずボール中心
Ｏに一致させ、内外輪の曲線状ボール溝の曲率中心をボ
ール中心Ｏから反対側に等量ずらせた構造の場合にも同
様に適用できる。Second Embodiment FIG. 4 shows a second embodiment. In this embodiment, the ball grooves 26 and 28 can be easily processed by cold forging.
This is an example of a constant velocity joint in which the ball grooves 26 and 28 are formed without undercut. Ball groove 26 of outer ring 21
Has a curved ball groove 26a whose center of curvature is B on the far side from the center of the joint, and has a straight ball 26b connected to the ball groove 26a on the opening side.
The ball groove 28 of the inner ring 22 is composed of a curved ball groove 28a having a center of curvature A and a straight ball groove 28b. The centers of curvature C and D of the inner and outer spherical surfaces 29 and 30 of the cage 24 are offset from the center O of the ball by an equal amount. Ball groove 2 in cross section II-II including ball center
The contact state between the balls 9 and 30 and the ball 23 is the same as that in the first embodiment, and the description thereof is omitted. Further, the drawings show a constant velocity joint in which the center of curvature of the curved ball groove of the inner and outer rings and the center of curvature of the inner and outer spherical surfaces of the cage are both shifted from the ball center O to the opposite side. In the case of a structure in which the center of the curve of the groove is made to coincide with the center O of the ball and only the center of curvature of the inner and outer spheres of the cage is offset by an equal amount from the center O of the ball to the opposite side, or the center of curvature of the inner and outer spheres of the cage are not displaced The same can be applied to a structure in which the center of curvature of the curved ball groove of the inner and outer rings is made to coincide with the center O of the ball and the center of curvature is offset from the center O of the ball by an equal amount.

【第３実施例】 第５図は、内外輪４２、４１が直線状ボール溝４８、４
６を有しケージ４４の内外球面４９、５０の曲率中心
Ａ、Ｂがボール中心Ｏより反対側に等量ずらせた、いわ
ゆるダブルオフセット型プランジング等速ジョイントの
例であり、ボール中心を含む横断面III−IIIにおけるボ
ール溝４８、４６とボール４３の接触状態は第１実施例
と同様である。Third Embodiment FIG. 5 shows that the inner and outer races 42, 41 have linear ball grooves 48, 4
6 is an example of a so-called double offset type plunging constant velocity joint in which the centers of curvature A and B of the inner and outer spheres 49 and 50 of the cage 44 are shifted to the opposite side from the center O of the ball, and the crossing including the center of the ball is performed. The contact state between the ball grooves 48 and 46 and the ball 43 on the surface III-III is the same as that in the first embodiment.

【効果】【effect】

以上のように、この発明によれば、内外輪のボール溝に
おけるトルク伝達ボールの接触線を回転方向に隣接する
ボール溝において反対方向に傾斜させ、かつ、各ボール
溝とトルク伝達ボールとの間に予圧を付与したので、回
転方向のガタがなく、振動、騒音を防止できる。As described above, according to the present invention, the contact lines of the torque transmitting balls in the ball grooves of the inner and outer races are inclined in the opposite directions in the adjacent ball grooves in the rotational direction, and the contact lines between the ball grooves and the torque transmitting balls are different from each other. Since a preload is applied to the, there is no play in the rotation direction, and vibration and noise can be prevented.

【図面の簡単な説明】[Brief description of drawings]

第１図は第１実施例の縦断面図、第２図は第１図のＩ−
Ｉ線に沿った横断面、第３図は、ボール溝とトルク伝達
ボールの接触部の拡大横断図面、第４図は第２実施例の
縦断面図、第５図は第３実施例の縦断面図である。 １、２１、４１……外輪 ２、２２、４２……内輪 ３……トルク伝達ボール ４、２４、４４……ケージ ６、２６、４６……ボール溝 ８、２８、４８……ボール溝FIG. 1 is a vertical cross-sectional view of the first embodiment, and FIG. 2 is I- of FIG.
A cross section taken along line I, FIG. 3 is an enlarged cross sectional view of the contact portion between the ball groove and the torque transmitting ball, FIG. 4 is a vertical cross section of the second embodiment, and FIG. 5 is a vertical cross section of the third embodiment. It is a side view. 1, 21, 41 ... Outer ring 2, 22, 42 ... Inner ring 3 ... Torque transmitting ball 4, 24, 44 ... Cage 6, 26, 46 ... Ball groove 8, 28, 48 ... Ball groove

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】内周面に軸方向に延びる複数のボール溝が
形成された外輪と、外周面に前記外輪のボール溝と協働
するボール溝が形成された内輪と、前記各ボール溝間に
収容されたトルク伝達ボールと、前記内外の両周面に案
内され前記トルク伝達ボールを保持するケージとよりな
る等速ジョイントにおいて、前記内外輪のボール溝にお
けるトルク伝達ボールの接触線を順次逆方向に傾斜さ
せ、かつ前記各ボール溝とトルク伝達ボールとの間に予
圧を付与したことを特徴とする等速ジョイント。1. An outer ring having a plurality of axially extending ball grooves formed on an inner peripheral surface thereof, an inner ring having an outer peripheral surface formed with ball grooves cooperating with the ball grooves of the outer ring, and between the ball grooves. In a constant velocity joint composed of a torque transmission ball housed in the inner and outer peripheral surfaces and a cage for holding the torque transmission ball guided on both the inner and outer peripheral surfaces, the contact lines of the torque transmission ball in the ball grooves of the inner and outer rings are sequentially reversed. A constant velocity joint characterized by being inclined in a predetermined direction and applying a preload between each of the ball grooves and the torque transmitting ball.
JP3604886A 1986-02-19 1986-02-19 Constant velocity joint Expired - Lifetime JPH0625567B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3604886A JPH0625567B2 (en) 1986-02-19 1986-02-19 Constant velocity joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3604886A JPH0625567B2 (en) 1986-02-19 1986-02-19 Constant velocity joint

Publications (2)

Publication Number Publication Date
JPS62194028A JPS62194028A (en) 1987-08-26
JPH0625567B2 true JPH0625567B2 (en) 1994-04-06

Family

ID=12458824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3604886A Expired - Lifetime JPH0625567B2 (en) 1986-02-19 1986-02-19 Constant velocity joint

Country Status (1)

Country Link
JP (1) JPH0625567B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4440285C1 (en) * 1994-11-11 1996-04-25 Loehr & Bromkamp Gmbh Homokinetic ball and socket joint

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327016C1 (en) * 1993-08-12 1995-01-05 Gkn Automotive Ag Homokinetic joint
EP0717209A1 (en) * 1994-12-14 1996-06-19 General Motors Corporation Stroking constant velocity universal joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4440285C1 (en) * 1994-11-11 1996-04-25 Loehr & Bromkamp Gmbh Homokinetic ball and socket joint

Also Published As

Publication number Publication date
JPS62194028A (en) 1987-08-26

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