JPH0146725B2 - - Google Patents
Info
- Publication number
- JPH0146725B2 JPH0146725B2 JP15049580A JP15049580A JPH0146725B2 JP H0146725 B2 JPH0146725 B2 JP H0146725B2 JP 15049580 A JP15049580 A JP 15049580A JP 15049580 A JP15049580 A JP 15049580A JP H0146725 B2 JPH0146725 B2 JP H0146725B2
- Authority
- JP
- Japan
- Prior art keywords
- cage
- ball
- joint
- center
- outer race
- 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
- 238000010586 diagram Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- F16D3/224—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
-
- 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
- F16D2003/22303—Details of ball cages
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Description
【発明の詳細な説明】
バーフイールド形等速継手においては、第１図
に示すように、インナーレース１３のボール溝１
３ａの中心Ｘとアウターレース１１のボール溝１
１ａの中心Ｙがジヨイント中心Ｏからオフセツト
しているため、継手にトルクが加わるとボールは
アウターレースの外方端即ち開口端側へ向けて軸
方向に押される（第１図中における矢印はボール
にかかる力を表わしている）。従つて、ケージも
外方へ押し出され、よつて、ボールを含む平面は
ジヨイント中心Ｏからずれることになる。一方、
継手に角度がついている時は、第２図に示すごと
く、インナーレースのボール溝１３ａとアウナー
レースのボール溝１１ａが斜に交差するので、ボ
ールはこれらの溝の側面で囲まれたほゞ平行四辺
形に内接した状態で位置決めされる。図面の上で
はこれらの中心は一致しているが、アウターレー
ス１１とケージ１２との間にガタが存在し且つケ
ージが上述のように外方へ押されるので、実際上
は中心は一致せず、軸方向にずれることになる。
このため、ボールが二重位置決めされてスムーズ
な運動ができなくなり、ボール転動面には不必要
な力が作用し耐久寿命が短くなる。DETAILED DESCRIPTION OF THE INVENTION In a bar field type constant velocity joint, as shown in FIG.
Center X of 3a and ball groove 1 of outer race 11
Since the center Y of 1a is offset from the joint center O, when torque is applied to the joint, the ball is pushed in the axial direction toward the outer end of the outer race, that is, toward the open end. ). Therefore, the cage is also pushed outward, and the plane containing the ball is displaced from the joint center O. on the other hand,
When the joint is angled, as shown in Figure 2, the ball groove 13a of the inner race and the ball groove 11a of the outer race intersect obliquely, so the ball forms a substantially parallelogram surrounded by the sides of these grooves. Positioned while inscribed in the shape. Although these centers coincide in the drawing, there is play between the outer race 11 and the cage 12, and the cage is pushed outward as described above, so in reality, the centers do not coincide. , it will shift in the axial direction.
As a result, the balls are double positioned and cannot move smoothly, and unnecessary force is applied to the ball rolling surface, shortening the durability life.
本発明はこの点を解消し、高負荷時の耐久性が
改良されたバーフイールド形等速継手を提供せん
とするものである。 The present invention aims to solve this problem and provide a bar field type constant velocity joint with improved durability under high loads.
次に、第３図以下の図面を参照して具体的に説
明する。 Next, a detailed explanation will be given with reference to the drawings from FIG. 3 onwards.
第３図において、アウターレース１１の軸線１
１′に対してケージ１２の軸線１２′がα度傾いて
いる時ケージの外球心２がアウターレースの内球
心１に対して距離Δlpだけずれ、そのずれの方向
はアウターレース１１の軸線１１′に対してβ度
とする。第４図においても、インナーレース１３
の外球心４がケージ１２の内球心３に対して距離
Δliだけずれ、そのずれの方向がケージ１２の軸
線１２′に対してγ度（アウターレースの軸線１
１′に対しては（α＋γ）度）とする。これらの
関係を拡大して示したのが第５図と第６図であ
る。これらのうち第５図は従来の設計を示したも
ので、この場合にはボールを含む平面５がアウタ
ーレース１１の軸線１１′とインナーレース１３
の軸線１３′との交点であるジヨイント中心Ｏを
通らずケージ１２の内・外球心２，３を通るた
め、前述のような二重位置決めの矛盾が生じる。 In FIG. 3, the axis 1 of the outer race 11
When the axis 12' of the cage 12 is tilted by α degree with respect to the axis 1', the outer spherical center 2 of the cage deviates from the inner spherical center 1 of the outer race by a distance Δl p , and the direction of the deviation is the same as that of the outer race 11. It is set at β degrees with respect to the axis 11'. Also in Figure 4, the inner lace 13
The outer spherical center 4 of the cage 12 is shifted by a distance Δl i from the inner spherical center 3 of the cage 12, and the direction of the shift is γ degrees (the axis 1 of the outer race) with respect to the axis 12' of the cage 12.
1′ is (α+γ) degrees). FIGS. 5 and 6 show enlarged views of these relationships. Of these, FIG. 5 shows a conventional design, in which the plane 5 containing the balls is aligned with the axis 11' of the outer race 11 and the inner race 13.
Because it passes through the inner and outer spherical centers 2 and 3 of the cage 12 instead of passing through the joint center O, which is the intersection with the axis 13' of the cage 12, the above-mentioned double positioning contradiction occurs.
第６図及び第７図は本発明の技術思想を図示し
たもので、同図から明らかなように、アウターレ
ース１１とケージ１２との間の軸方向ガタに伴う
ジヨイント中心Ｏとケージの内・外球心２，３と
の間のずれの距離ΔPだけケージ１２のボール・
ポケツト窓１２ａをケージの内・外球心２，３か
らアウターレース１１の開口端と反対の方向にオ
フセツトさせ、ボールを含む平面５がジヨイント
中心Ｏを通るようにしたものである。 6 and 7 illustrate the technical idea of the present invention, and as is clear from the figures, the joint center O and the inner part of the cage due to the axial play between the outer race 11 and the cage 12. The ball of the cage 12 is
The pocket window 12a is offset from the inner and outer spherical centers 2 and 3 of the cage in the direction opposite to the open end of the outer race 11, so that the plane 5 containing the ball passes through the joint center O.
次に第８図を参照してオフセツト距離ΔPの求
め方を説明する。 Next, referring to FIG. 8, a method for determining the offset distance ΔP will be explained.
同図において、線分ABは半径Ｒの内球の弦で
あるので内球心Ｏはこの垂直２等分線上にある。
線分ABは同時に半径ｒの外球の弦でもあるので
外球心Ｅはこの垂直２等分線上にある。即ち直線
OEは直線ABと直交する。ゆえに直線OEとｘ軸
のなす角をβとすれば直線ABとｙ軸のなす角も
βとなる。直線ABの傾きからβを求める。まず
Ｂ点の座標を求める。に対して＝ｌが十分
に小さい（約0.1mm）ので∠DOB≒∠DEBとして
よい。 In the figure, the line segment AB is the chord of the inner sphere of radius R, so the center of the inner sphere O lies on this perpendicular bisector.
Line segment AB is also the chord of the outer sphere of radius r, so the center of the outer sphere E lies on this perpendicular bisector. i.e. straight line
OE is perpendicular to straight line AB. Therefore, if the angle between the straight line OE and the x-axis is β, the angle between the straight line AB and the y-axis will also be β. Find β from the slope of straight line AB. First, find the coordinates of point B. Since =l is sufficiently small (approximately 0.1 mm), ∠DOB≒∠DEB may be satisfied.
∠DOB≒＜DEB＝cos-1ｂ／Ｒ ∴∠FOB＝α＋cos-1ｂ／Ｒ よつてＢ点のｘ座標は xB＝Rcos（α＋cos-1ｂ／Ｒ） ｙ座標はyB＝−Rsin（α＋cos-1ｂ／Ｒ） となる。 ∠DOB≒<DEB=cos -1 b/R ∴∠FOB=α+cos -1 b/R Therefore, the x coordinate of point B is x B = Rcos (α+cos -1 b/R) The y coordinate is y B = -Rsin (α+cos -1 b/R).
Ａ点のｘ座標をxA＝ａとすればｙ座標は yB＝√2−2である。直線ABの傾きから よりβが求まる。ただし xB＝Rcos（α＋cos-1ｂ／Ｒ）＞ａ の時はβ＝０とする。 If the x coordinate of point A is x A = a, then the y coordinate is y B = √ 2 − 2 . From the slope of straight line AB From this, β can be found. However, when x B = R cos (α + cos -1 b/R) > a, β = 0.
ΔAOEに注目すると∠AOF＝cos-1ａ／Ｒ
∴∠AOE＝β＋cos-1ａ／Ｒ
ΔAOEに余弦定理を使つて
r2＝R2＋l2−2Rlcos（β＋cos-1ａ／Ｒ）
ここでＱ＝Rcos（β＋cos-1ａ／Ｒ）とおけば
l2−2Ql＋（R2−r2）＝０ これをｌについて解
くと
ｌ＝Ｑ−√2−（2−2）
これによりｌが求まる。βとｌが求まる事によ
り、第６図のΔlo，β，Δli，γが求まり、作図
によりΔPを求める。 Focusing on ΔAOE, ∠AOF=cos -1 a/R ∴∠AOE=β+cos -1 a/R Using the cosine theorem for ΔAOE, r 2 = R 2 +l 2 -2Rlcos (β+cos -1 a/R) Here, Q = R cos (β + cos -1 a/R), then l 2 - 2 Ql + (R 2 - r 2 ) = 0 Solving this for l, l = Q - √ 2 - ( 2 - 2 ) From this, l can be found. By determining β and l, Δlo, β, Δli, and γ in Fig. 6 are determined, and ΔP is determined by plotting.
以上により明らかなように、本発明によればバ
ーフイード形等速度継手に特有のボールの二重位
置決めによる矛盾がなくなり、不必要な力がボー
ル転動面に作用することが防止される。従つて、
角度がついてトルクがかかり回転している状態で
は従来の継手よりボール転動面の寿命が延長され
るという効果がある。 As is clear from the above, according to the present invention, the contradiction caused by double positioning of the balls, which is peculiar to bar-feed type constant velocity joints, is eliminated, and unnecessary force is prevented from acting on the ball rolling surfaces. Therefore,
When the joint is rotated at an angle and torque is applied, it has the effect of extending the life of the ball rolling surface compared to conventional joints.
また、本発明の技術思想はD.O.J型等速継手及
びD.O.S型等速継手等ケージを用いてボールの位
置決めを行いかつトルクを伝えるボールの転動す
るボール溝にも位置決め性を有する継手に対して
も有効に適用可能である。 In addition, the technical idea of the present invention applies to joints such as DOJ type constant velocity joints and DOS type constant velocity joints that use cages to position the balls and also have positioning properties in the ball grooves in which the balls that transmit torque roll. can also be effectively applied.
第１図はバーフイールド等速継手においてボー
ルにかかる力を矢印で表わした説明図である。第
２図は同上継手に角度がついた時に２つの交差す
るボール溝によつてボールが位置決めされる状態
を示した説明図である。第３図および第４図は継
手にトルクがかかつた時各部材の移動する方向と
移動量とを示した説明図である。第５図は第３図
及び第４図の中心部の拡大図で、従来の構造を図
解した説明図である。第６図は第５図に類似する
図であるが本発明の技術思想を図示した説明図で
ある。第７図は第６図に示す技術思想をを実施し
た本願継手の一実施例を示す図である。第８図は
解析のための図である。
１１……アウターレース、１２……ケージ、１
３……インナーレース、１４……ボール、２，３
……ケージの内・外球心、Ｏ……ジヨイント中
心、ΔP……ジヨイント中心とケージの内・外球
心との間のオフセツト距離、１２ａ……ケージの
ボール・ポケツト。
FIG. 1 is an explanatory diagram in which the force applied to the ball in a bar field constant velocity joint is represented by arrows. FIG. 2 is an explanatory diagram showing a state in which the balls are positioned by two intersecting ball grooves when the joint is angled. FIGS. 3 and 4 are explanatory diagrams showing the direction and amount of movement of each member when torque is applied to the joint. FIG. 5 is an enlarged view of the central part of FIGS. 3 and 4, and is an explanatory diagram illustrating the conventional structure. FIG. 6 is a diagram similar to FIG. 5, but is an explanatory diagram illustrating the technical idea of the present invention. FIG. 7 is a diagram showing an embodiment of the joint of the present invention in which the technical idea shown in FIG. 6 is implemented. FIG. 8 is a diagram for analysis. 11... Outer lace, 12... Cage, 1
3...Inner lace, 14...Ball, 2,3
...Inner and outer centers of the cage, O...Joint center, ΔP...Offset distance between the joint center and the inner and outer centers of the cage, 12a...Ball pocket of the cage.
Claims (1)
レース１１とケージ１２との間の軸方向ガタに伴
うジヨイント中心Ｏとケージの内・外球心２，３
との間のずれの距離ΔPだけケージのボール・ポ
ケツト窓１２ａをケージ内・外球心２，３からア
ウターレースの開口端と反対の方向にオフセツト
させたことを特徴とするバーフイールド等速継
手。1 In a bar field constant velocity joint, the joint center O and the inner and outer spherical centers 2 and 3 of the cage due to the axial play between the outer race 11 and the cage 12
A bar field constant velocity joint characterized in that the ball/pocket window 12a of the cage is offset from the inner/outer ball centers 2, 3 of the cage in the direction opposite to the open end of the outer race by a distance ΔP of deviation between .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15049580A JPS5773228A (en) | 1980-10-27 | 1980-10-27 | Bar field uniform joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15049580A JPS5773228A (en) | 1980-10-27 | 1980-10-27 | Bar field uniform joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5773228A JPS5773228A (en) | 1982-05-07 |
| JPH0146725B2 true JPH0146725B2 (en) | 1989-10-11 |
Family
ID=15498108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15049580A Granted JPS5773228A (en) | 1980-10-27 | 1980-10-27 | Bar field uniform joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5773228A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57173155A (en) * | 1981-04-18 | 1982-10-25 | Toshiba Chem Prod | Manufacture of laminated board for chemical plating |
| WO2005033538A1 (en) * | 2003-10-01 | 2005-04-14 | Ntn Corporation | Fixed type constant velocity universal joint |
| JP2007211803A (en) * | 2006-02-07 | 2007-08-23 | Ntn Corp | Fixed type constant velocity universal joint |
-
1980
- 1980-10-27 JP JP15049580A patent/JPS5773228A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5773228A (en) | 1982-05-07 |
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