CN1049050A

CN1049050A - Constant velocity turning joint

Info

Publication number: CN1049050A
Application number: CN90103893A
Authority: CN
Inventors: 维尔纳·克吕德
Original assignee: GKN Driveline North America Inc
Current assignee: GKN Driveline North America Inc
Priority date: 1989-07-25
Filing date: 1990-05-23
Publication date: 1991-02-06
Anticipated expiration: 2005-05-23
Also published as: AU6061190A; CN1028665C; KR920704031A; BR9007553A; EP0484420A4; ES2024838A6; EP0484420A1; JPH05501905A; WO1991001453A1; AU644806B2; CA2016894A1

Abstract

A kind of constant velocity turning joint that is used for transmission of drive force square between revolving part, it comprises that a hub and that is fixed in one of them revolving part is connected in the external lug part of hub, the one internal connection spare and that is connected in another revolving part places the ball between external lug part and the internal connection spare that isolating frame is installed, all balls place all ball races of external lug part and internal connection spare, ball race has the plane of inclination, so that provide thick material in high stress locations, main ball race does not have the undercutting structure.

Description

Constant velocity turning joint

The present invention relates to a kind of constant velocity turning joint that is used for needs by any use occasion of an angle carry-over moment that changes.More particularly, this invention comprises the universal joint that utilizes many balls one moment to be passed to an external lug part from an internal connection spare.Series of grooves is contained in the inside of external lug part, and they are radially in alignment with the groove of outside a series of complementations, that be positioned at internal connection spare.Externally be provided with an isolating ring between adapter piece and the internal connection spare, in order to during rotating at universal joint to be the ball guiding when all balls traverse in groove.

Prior art has disclosed multiple device, and these devices can be delivered to another root axle from an axle with running torque, and these two axles are angled interconnective.Generally, the matching requirements of most of prior arts is done a large amount of processing to its each part, can assemble satisfactorily and turn round to guarantee device.Therefore, also just make prior art owing to considering that the needed amount of finish of all parts has to the total intensity of device is taked the way of trading off.

The present invention be different from disclose and be described in people such as Hans-Heinrich Welschof, no undercutting (undercut-free) constant-velocity joint on April 29th, 1975 U. S. Patent (serial number is 3879960) that announce, that be entitled as " constant-velocity joint ".The constant-velocity joint of describing in above-mentioned referenced patent has an external lug part, therein, holds the single ball grooves of looking all to disperse with respect to the central axis of universal joint from opening of external lug part.The all ball grooves that are positioned on the internal connection spare are assembled with respect to the central axis of universal joint.The isolating ring of dependence one between external lug part and internal connection spare makes all balls remain on a mutual separated plane relation.The external lug part is unsuitable for using stamp forging process, because the diameter of its opening is less than the diameter of internal cavities wherein.In addition, because ball grooves is dispersed, (lip) is thinner on the limit of external lug part.The thin district of external lug part is the maximum stress district in universal joint, and this point is particularly outstanding when rotation angle is big.

The difference of the present invention and above-mentioned universal joint is, the situation of dispersing and assembling of all ball grooves in external lug part and the internal connection spare antithesis, therefore, among the present invention, the free-ended thickness of external lug part increases.

People such as Nobuyuki Otsuka, on February 19th, 1980 U. S. Patent (patent No. 4188803) that announce, that be entitled as " constant velocity turning joint ", a kind of universal joint has been described, it has used an input shaft and an output shaft.Output shaft has the cavity that holds hub, and the end of input shaft is contained in this hub, and input shaft contains an inner piece that links to each other with it.Ball grooves is contained in the inboard of hub and the outside of inner piece.One ball isolating frame is housed between hub and the inner piece.The unique distinction of this ball isolating frame is that its inboard and outer surface contain eccentric ball surface rather than common concentric ball surface.The ball isolating frame is supported in also on the eccentric ball surface.

The present invention only utilizes the homocentric sphere surface that is easy to be shaped.In addition, the present invention is without any undercutting described in above-mentioned referenced patent, that must have in the hub district.The present invention is because so the ball isolating frame adopts the homocentric sphere surface very simple.In addition, hub and inner moment part have also utilized the homocentric sphere surface.

Werner Krude, disclosed another example of prior art in the U. S. Patent (patent No. is 4610643) that announce, that be entitled as " rotation constant velocity turning joint " on September 9th, 1986.Universal joint in patent (USP4610643) has an external lug part, all ball grooves are wherein looked from the flared end of external lug part and are convergence, and all grooves in the internal connection spare are and disperse.The arrangement of these grooves or inclination are just opposite with the described situation of above-mentioned patent (3879960).The combination of external lug part and axle-hub be separates also and its co-operation together.Utilize welding and undercut (crimping) technology, external lug part and hub are linked together with a cylindrical sleeve.One ball isolating frame supporting element is used for keeping all balls in all grooves, so that all balls are constrained in a side.Ball isolating frame supporting element does not contact the ball surface of external lug part or internal connection spare, and still, as shown in Figure 1, the ball isolating frame contacts with the ball surface 30 at the close center hub place of joint inside.In above-mentioned patent, it is the finger shape plate of inserting with respect to ball that the ball isolating frame contains a series of.This universal joint needs a large amount of required processing of this adapter piece of making, and needs to make the instrument of the needed complexity of various parts.

The present invention is that to the improvements that disclose and be described in the universal joint in the patent (4610643) the present invention can adopt less component, and, less with the rubbing contact of ball isolating frame.In addition, the invention provides a ball isolating frame that all holes are wherein arranged, this isolating frame fully and each ball tangent.In addition, because universal joint and external lug part have a thick structural sections near its opening end, this is the section that high capacity is concentrated when rotating, so this joint is reliable and durable.The manufacturing of external lug part is fairly simple, and manufacture cost also obviously reduces.

The present invention is a kind of constant velocity turning joint, and it is used for a driving moment is delivered to the axial direction that another is provided with at angle with respect to first direction from a first axle direction.

The present invention includes an external lug part, wherein contain many grooves that extend vertically within it.Externally adapter piece is built-in with an internal connection spare, and inside and outside adapter piece has many interdependent grooves.The external lug part is connected with a hub that forms as the part of the whole of the first transmission of torque axle, and many balls keep plane relation by an isolating frame, and wherein isolating frame is between inside and outside adapter piece and contact with them.Second axis of torque is connected with internal connection spare by common connection set.

Main purpose of the present invention provides the minimum universal joint of a kind of required in the mill amount of finish.

The universal joint that it is no undercutting (undercut-free) that another purpose of the present invention provides a kind of its major part.

Another object of the present invention provides a kind of joint structure, and its part is suitable for cold punching forming process.

Still a further object of the present invention is to reduce the outside and the contacted area of internal connection spare of ball isolating frame and universal joint.

The present invention also has another purpose to provide the universal joint that a kind of strength characteristics improves.

Still a further object of the present invention provides a kind of universal joint of assembling and dismantling of being easy to.

From the appending claims of following description and in conjunction with to as the consulting of the accompanying drawing of the part of specification of the present invention, other purpose of the present invention and advantage will be more readily apparent from, and identical numbering is represented identical part in each accompanying drawing.

Fig. 1 A is the partial sectional view of the no undercutting external lug part of prior art, and has diagrammatized the situation of the power that the no undercutting constant-velocity joint along with the increase prior art that curves the angle is subjected in ball orbit;

Fig. 1 represents universal joint of the present invention with side elevation in partial section;

Fig. 2 represents to be in universal joint under the angle drive state with side elevation in partial section;

Fig. 3 is the whole hub of expression and the broken section front view of output shaft;

Fig. 4 is " 4-4 " line direction is looked in Fig. 3 the hub and the end elevation of output shaft;

Fig. 5 is the end elevation of external lug part, there is shown a pair of to being positioned at its lip-deep groove;

Fig. 6 is the sectional view along " 6-6 " line among Fig. 5, the curve-like surface of expression ball and isolating frame;

Fig. 7 is the end elevation of internal connection spare, represents a pair of to being positioned at the groove on the internal connection spare outer surface; And

Fig. 8 is the sectional view along " 8-8 " line among Fig. 7, the curve-like surface of expression ball and isolating frame.

The present invention is not limited to be shown in the structure of each part in all accompanying drawings and the details of arrangement, because also available all other modes are implemented the present invention with other embodiment in the scope of claims, in addition, it should also be understood that, here used word and professional term only are used for illustrative purposes, do not have any restriction.

Now consult especially Figure 1A of all accompanying drawings.This figure has represented that with broken section prior art do not have the undercutting constant velocity turning joint, and it can be used for connection and other many purposes of transmission shaft.Graphical representation among the figure is along with the suffered power of increase external lug part that curves the angle.Curve the corner (angle) between the central axis of central axis that (angle) is the external lug part and internal connection spare.This plotted curve is clear to be shown: curve angle and near the suffered power maximum flared end of adapter piece externally in maximum.

Fig. 1 is a partial, partially-cross-sectioned side-elevation view, has represented universal joint of the present invention.Whole device is represented (seeing figure) with numeral 10.For the purpose of illustrating, suppose to have a rotating force or moment to be added to just like on the input shaft 12 shown in the right side of Fig. 1.One output shaft 14 is arranged in the left side of whole device 10.Certainly, the direction of transfer of moment can be opposite with above-mentioned direction.As shown in the figure, the hub 16 of output shaft 14 and the part of the whole that can be used as it links to each other.Hub 16 and output shaft 14 are coaxial along output axis 20.Input axis 18 coincides with output axis 20.Hub 16 has a cylindrical outer surface 22, its in abutting connection with (applying) in inwards a flange 24 radially.This flange 24 is flat, and perpendicular to output axis 20.Hub 16 has a concave surface by arcuate segment 26, one frusto-conical face sections 28 and a sphere section 30 compositions.Top three sections linked together promptly forms a concave surface, and this concave surface is easy to make with punching press and Forging Technology very much.

External lug part 32 has a columniform outer surface 34 around output axis 20.As shown in Figure 1, the left-hand end of external lug part 32 has the cylindrical surface 36 of a radius less than outer surface 34.The cylindrical surface 36 of external lug part 32 is with cylindrical outer surface 22 actions of hub 16, so that in the mode that below will describe more fully hub 16 is linked to each other with external lug part 32.External lug part 32 has an internal ball surface 38.Internal ball surface 38 is to be positioned at the radius of importing the some L place on the axis 18 by a centre of sphere to form.The left-hand end 40 of external lug part 32 be plane shape and a radial distance across spacing between cylindrical surface 36 and the internal ball surface 38 arranged.Junction point between end 40 and the inner spherical surface 38 can tilt, shown in numbering 42 among the figure.The right-hand end 44 of external lug part 32 is planes, and it has a radial distance that extends between outer surface 34 and the internal ball surface 38.Junction point between end 44 and the internal ball surface 38 tilts about 45 °, and this will illustrate separately.So, obviously, the central axis district of a big cavity by external lug part 32 arranged.

Many arc ball races that extends vertically or groove 46 undercutting and the internal ball surface 38 by external lug part 32.The radially outermost distance of each ball race, or center line have a circle segments 48, and this section links to each other with basically a straightway 50.Circle segments 48 has a radius, being centered close on the output axis 20 in the left part of a L of this radius.As shown in Figure 5, all ball races 46 are each other along the diametric(al) setting.Every pair of center line along the relative ball race 46 of diametric(al) is positioned at one and also comprises the plane of exporting axis 20.

One internal connection spare 52 is set in the open cavity by external lug part 32.Internal connection spare 52 is provided with to 18 one-tenth symmetric relations of input axis.Internal connection spare 52 has an interior cylindrical hole 54, and this hole is provided with all splines 56 that extends vertically.Internal connection spare 52 has radially basic

flat end

58 and 60 that extend, a left side and right side.Radially outermost surface 62 of internal connection spare 52 is spherical, and this spherical ends at the jointing place with

planar ends

58 and 60.

Internal connection spare 52 contains many that extend vertically, undercutting and arc ball race or groove 64 by external ball surface 62.The place or the midline of radially leaning on most the lining of each ball race 64 have a circle segments 66 that links to each other with a basic straightway 68.This circle segments 66 has its radius that is centered close to L point right side on the input shaft 18.The distance of ordering to L in the center of circle of circle segments 66 is substantially equal to the center of circle of the circle segments 48 of external lug part and arrives the distance that L is ordered.

Ball isolating frame 70 places the cavity of external lug part 32 interior and spaced apart with the outer surface of the internal connection spare 52 that packs into.Ball isolating frame 70 has outside and internal ball surface 72 and 74 concentrically with respect to one another.As shown in Figure 1, external ball surface 72 ends at this surperficial left-hand end with an end 76 of radially extending inwards.The cylindrical hole 78 that radially extends vertically by the part and of lining of end 76 intersects.Cylindrical hole ends at the right part and intersect on internal ball surface 74.The external ball surface 72 of ball isolating frame 70 ends at this surperficial right-hand end with an end 80 of radially extending inwards.The cylindrical hole 82 that radially extends vertically by the part and of lining of end 80 intersects.Cylindrical hole 82 ends at the left part and intersect on internal ball surface 74.

The external ball surface 72 of ball isolating frame 70 is done rotation with the internal ball surface 38 of external lug part 32 and is contacted.Similarly, the internal ball of ball isolating frame 70 surface 74 is done to rotate with the external ball surface 62 of internal connection spare 52 and is contacted.

In by the outside of ball isolating frame 70 and internal ball surface 72 and 74 walls that form, be equipped with the many radially hole or the window 84 of extension.The axis in all holes 84 is by the L point on the input shaft 12.The center line of every axis and

ball race

46 and 64 matches, and in other words, the axis in each hole 84 is positioned at a plane of center line that comprises every center line of

ball race

46 and 64.

One spherical ball 86 is housed in the boundary in each hole 84, the ball energy is moved along the center line of

ball race

46 and 64 simultaneously.

Input shaft 12 has the spline 88 of many outside protrusions, and they are meshed with cylindrical hole 54 axially extended many splines 56 along internal connection spare 52.

The cylindrical hole 54 of internal connection spare 52 contains one recessed (reentry) groove 90, in order to hold finger-like lock (fingerlock) clasp 92.A plurality of cantilever type jerk-fingers 94 are bitten one on the flange radially 96 of input shaft 12.Like this, finger-like snap close ring 92 just can prevent that input shaft 12 from moving vertically with respect to internal connection spare 52.

Fig. 2 is the partial, partially-cross-sectioned side-elevation view of whole device 10, has represented to be in the universal joint under the drive state of angle.For discuss convenient for the purpose of, input shaft 14, the hub 16 of connection and portion's adapter piece 32 are in fixed relation to each other motionless and only rotate.As shown in Figure 2, suppose that input shaft 12 is in a position, its input axis 18 with respect to the output axis 20 of output shaft 14 at an angle.When input shaft 12 moves to a new position, angle, because internal connection spare 52 fixes with respect to input shaft 12, so it also moves past identical angle.When input shaft 12 moves a certain angle, all spherical ball 86 just move, the spherical ball 86 that wherein vertically is in highest order moves right to the farthest, and correspondingly along another

ball race

46 and 64 is shifted to the left side along the spherical ball 86 that diametric(al) is in lowest order.Remaining spherical ball 86 is also corresponding to be moved along ball race 46 and 64.Certainly, be positioned on the input axis 18, just can not move along

ball race

46 and 64 as a spherical ball 86.Above-mentioned discussion hypothesis input shaft and output shaft 12 and 14 are non-rotary.

When input shaft 12 and a certain angle of internal connection spare 52 rotations, the angle of ball isolating frame 70 rotations is smaller, as shown in Figure 2.Importantly: ball isolating frame 70 always rotates, and makes the axis 98 in hole 84 keep such position, even L point position thereon.So, whole device 10 has just reached the constant speed requirement.

The below spherical ball 86 of observing among Fig. 2 can be found out: ball 86 is always shifted to left side up to leveling off to before the arcuate segment 26 of hub 16 at it.In addition, on the left of the lowermost part of ball isolating frame 70 was shifted to before it has occupied top by the cavity that forms by conical section 28 always.Ball isolating frame 70 only with spherical ball 86, the external ball surface 72 of the internal ball of external lug part 32 surface 38 and internal connection spare 32 contacts.

When the inclined surface 100 of the frustum of a cone of input shaft 12 contact external lug parts 32, the angle of input shaft 12 is just moved and is stopped.

Fig. 3 is the whole hub 16 of expression and the side elevation in partial section of output shaft 14.Output shaft 14 can be divided into cylindrical

axial direction part

102 and 104, every section spline 106 that contains many vertical alignings along arc shooting.Hub 16 as the extension part of output shaft 14 has one by arcuate segment 26, the internal cavities that truncted cone section 28 and sphere section 30 form.Owing to do not need undercutting during the internal cavities of formation hub 16, it can utilize punching press or contour forging technique to form.

Fig. 4 is the end elevation of the cavity that " 4-4 " line direction is seen from Fig. 3.Its flange 24 represents with plane view, also shows the transversal between all surfaces of the cavity in the above-mentioned hub 16 among the figure.

Fig. 5 is the end elevation of external lug part 32, express on the inner spherical surface 38 that is in external lug part 32, along diametric(al) groove facing each other.As can be seen from the figure, ball race 46 is not a undercutting, and like this, their available punching presses or Forging Technology make.As in making external lug part 32, using sintering process, then needn't be again with metal cutting processing internal ball surface 38.The shape of cross section of ball race 46 is circular, and has the tangentially section of extending in parallel 108 that links with this circle.Although extension 108 is parallel among the figure, if required, they also can be dispersed to input axis 18 slightly.In addition, the arc-shaped cross-section of ball race 46 part can be rendered as non-circular a little, to provide and to contact as line by the spherical ball there.

Fig. 6 is along the sectional view of " 6-6 " hatching line among Fig. 5, shows the curve-like surface of being made up of arc section 48 and straightway 50.Also demonstrate inner spherical surface 38.

Fig. 7 is the end elevation of internal connection spare 52, express a pair of on the outer spherical surface that is positioned at internal connection spare 52, along diametric relative ball race 64.The quantity of ball race 64 equals the quantity of front ball race 46 as shown in Figure 5.Cylindrical hole 54 contains all splines 56 of aiming at input axis 18 vertically.

Fig. 8 is the sectional view along " 8-8 " hatching line among Fig. 7, the curve center line of expression ball race 64 and the outer spherical surface 62 of internal connection spare 52.The technology of the easy processing that the front discussed can be adopted in plane left and

right end

58 and 60.

The assembling of whole device 10 of the present invention is foolproof.In addition, the geometrical shape of all assemblies of whole device can allow to use automatic assembling.The limit, left side that makes internal connection spare 52 during assembling earlier is (as shown in Figure 1) up.Then, ball isolating frame 70 is aimed at ground to transferring with one heart and vertically around internal connection spare 52, relative until all holes 84 with the circle segments 66 of ball race 64.Then, all spherical ball 86 are embedded in each hole 84.Along with all spherical ball 86 radially move inwardly, they will touch the circle segments 66 of ball race 64 and keep motionless.Then, external lug part 32 is sleeved on the ball isolating frame 70.Then, make ball isolating frame 70 move to the last position that axially aligns.Like this, all spherical ball 86 is kept not making radially outwards disengaging by all ball races 46.Then, the cylindrical outer surface 22 of hub 16 is moved to cooperate with the inner cylindrical surface 36 of external lug part 32 and in surface 36, maintain static.Technique for fixing can comprise press fit.Welding, or with installing as a kind of snap ring (trip ring) of representing at the 108a place among Fig. 2.This moment or after a while can be inserted into input shaft 12 in the cylindrical hole 54,

spline

56 and 58 is slided match.After input shaft 12 inserts fully, the jerk-finger 94 of the clasp 92 that has inserted in advance just and the flange 96 on the input shaft 12 match, make this axle be locked to its final position.

Between whole device 10 on-stream periods, applied a moment on the input shaft 12, the internal connection spare 52 that it is connected with spline rotates.Like this, rely on and the contacting of ball race 64, moment passes on all spherical ball 86 around internal connection spare 52.By ball race 46, all spherical ball 86 pass to external lug part 32 with moment again.Because the external lug part is the flange 24 that is not connected in hub 16 rotatably, so hub 16 is along with its whole output shaft that connects 14 rotation.

When input and

output axis

18 and 20 is aligned with each other respectively, between whole device 10 on-stream periods, all spherical ball 86 will remain on a position of ball race 46 and 64.Because all spherical ball are positioned at the center of

ball race

46 and 64, stress distributes preferably by external lug part 32 and internal connection spare 52.

When input shaft 12 and input axis 18 thereof with respect to

output shaft

14 and 20 one-tenths in axis of output thereof just like 45 ° angle position or when curving 45 °, all spherical ball 86 just no longer slide on around the single figures of importing axis 18 one.During whole device 10 rotations one turn over, spherical ball 86 with traversing on almost

seat ring

46 and 64 whole length.Because spherical ball 86 is installed to such an extent that make them can not produce horizontal moving with respect to ball isolating frame 70, so, ball isolating frame 70 is rotation on its outside and inner spherical surface 72 and 74 not only, and, when input axis 18 with respect to an axis of ordering by L when shifting left to the right side, this ball isolating frame also must rotate, and it is punctual to have only when input and

output axis

18 and 20 pairs, and the spin axis of ball isolating frame 70 is just perpendicular to input axis 18.The frequency and the size of the variation of the angle that ball isolating frame 70 is represented with label 110 in the size of its axis rotation and frequency are decided by as Fig. 2.When whole device 10 curves when turning round under the situation of angle in maximum, on the internal surface of the circle segments 48 of contiguous external lug part 32 ends 44, produce a maximum load.In Fig. 2, express this maximum load point with " 112 ".Because the thickness maximum at external lug part 32 44 places in the end is so be able to take to put the high load that 112 places cause in maximum load.Also have, the increase of total cross section at external lug part 32 44 places in the end makes end 44 be reduced along the elongation of circumference or circumferential direction.The life-span of whole device is prolonged the circumferential extension that reduces and serviceability improves.

Although but the present invention has made detailed description to each required details of a practical operation structure as far as possible by embodiment, but above specifically described device usefulness for illustrative purposes only, and only otherwise leave other structural type of the spirit and scope of the present invention that limit by appended claims, also reflect many new features of the present invention, this point is understandable.

Claims

1, a kind ofly between diaxon power is passed to the constant velocity turning joint of driven shaft from live axle, it comprises:

One internal connection spare, it has an outer spherical surface, and a symmetrical axis and is positioned at the hole around the described axis of symmetry;

Drive unit, it is positioned at the rotation that described hole is beneficial to described internal connection spare;

First group of ball race of aiming at vertically, it is formed at the described outer spherical surface of described internal connection spare;

One external lug part, it has an end, one inner spherical surface and one is by hole this adapter piece, that be positioned at the center, and described external lug part is provided with to such an extent that become concentricity nested relationship with respect to described internal connection spare, and described external lug part also has a central axis by it;

Second group of ball race, it is formed at the described inner spherical surface of described internal connection spare;

A plurality of spherical ball, they are between described internal connection spare and external lug part;

Holding device, it is between described internal connection spare and external lug part, and in order to keeping described a plurality of spherical ball, each contacts with described first group and second group of ball race in described a plurality of spherical ball;

One hub, it is connected in a described end of described external lug part, described hub have one at the center cavity that be provided with, within it; And

One output shaft, it is the part of the whole of described hub, the central axes of the axis of described output shaft and described external lug part.

2, constant velocity turning joint as claimed in claim 1 is characterized in that, described drive unit comprises an input shaft, and an end of described input shaft comprises many splines.

3, constant velocity turning joint as claimed in claim 2 is characterized in that, described drive unit also comprises the spline in many described holes of being located at described internal connection spare.

4, constant velocity turning joint as claimed in claim 1 is characterized in that, described to place the holding device between described internal connection spare and the described external lug part be a porose ball isolating frame.

5, constant velocity turning joint as claimed in claim 1, it is characterized in that, described holding device comprises a ring-type isolating frame spare, it has an outer surface, one with the isolated internal surface of described outer surface, one has the hole of the heart placed in the middle of a central axis, and a plurality of hole between described inside and outside surface, that open, radially aim at along the circle spacing, in order to keep described all spherical ball.

6, constant velocity turning joint as claimed in claim 5 is characterized in that, described many hole number of opening, radially aiming at along the circle spacing are even number.

7, constant velocity turning joint as claimed in claim 6 is characterized in that, described many holes of opening, radially aiming at along the circle spacing are arranged in along diametric(al) relative in twos, and perpendicular to the described central axis in the hole of the described heart placed in the middle.

8, constant velocity turning joint as claimed in claim 7 is characterized in that, a described spherical ball is contained in each hole of described many Zhu Kongzhong along the circumferential direction spaced apart, that radially aim at.

9, constant velocity turning joint as claimed in claim 8, it is characterized in that, the described outer surface of described annular isolation frame spare is an external ball surface, and the described internal surface of described annular isolation frame spare is an internal ball surface, and described inside and outside ball surface is center altogether mutually.

10, constant velocity turning joint as claimed in claim 1 is characterized in that, the described first group of ball race in described internal connection spare has a smallest radial spacing from the described axis of the described internal connection spare of contiguous described hub.

11, constant velocity turning joint as claimed in claim 10 is characterized in that, each in described first group of ball race has a curved section and a straightway.

12, constant velocity turning joint as claimed in claim 1 is characterized in that, the described second group of ball race in described external lug part has a maximum radial spacing from the described axis of the described external lug part of contiguous described hub.

13, constant velocity turning joint as claimed in claim 12 is characterized in that, each in described second group of ball race has a curved section and a straightway.

14, constant velocity turning joint as claimed in claim 1, it is characterized in that, the described external ball surface of described internal connection spare is from the radial distance of the described axis of described internal connection spare, greater than being contained in described first group of ball race in the described internal connection spare; And the described internal ball surface of described external lug part is from the radial distance of the described axis of described external lug part, less than being contained in first group of ball race described in the described external lug part.

15, constant velocity turning joint as claimed in claim 14 is characterized in that, described external ball surface is homocentric each other with described internal ball surface.

16, a kind ofly between diaxon power is passed to the constant velocity turning joint of driven shaft from live axle, it comprises:

One internal connection spare, it has a symmetrical axis, an external ball surface, one is formed on ball race described external ball surface, that aim at vertically round center hole described axis, that have spline and first group; Described external ball surface from the radial spacing of described axis greater than described many ball races of aiming at vertically;

One input shaft, described input shaft have the spline of the center hole of many described wounded in the battle keys that are arranged in described internal connection spare, and the direction of described many splines is parallel to the axis of described input shaft;

One external lug part, described external lug part has an end, one internal ball surface and one is by the hole that the is provided with there, placed in the middle, described external lug part is with respect to the concentric suit of described internal connection spare, described external lug part also has second a group of ball race and the central axis by it that is formed at described internal ball surface, described internal ball surface from the radial spacing of described central axis less than described many ball races;

One annular ball isolating frame spare, it is between described internal connection spare and described external lug part, in order to keep many spherical ball, described annular ball isolating frame spare has an outer surface, one with the isolated internal surface of described outer surface, the hole that a heart placed in the middle is provided with, and many between described inside and outside surface, open and the hole of aligning radially along the circle spacing, in order to holding described spherical ball, each of described many spherical ball contacts with described first group and second group of ball race;

One hub, it is connected in an end of described external lug part, the cavity that described hub has a heart in described external lug part, placed in the middle to be provided with; And

One output shaft, it forms as the part of the whole of described hub, described output shaft have one with the axis of the described dead in line of described external lug part.

17, constant velocity turning joint as claimed in claim 16 is characterized in that, the quantity in the described many holes of opening along the circle spacing in described annular ball isolating frame is even number.

18, constant velocity turning joint as claimed in claim 17 is characterized in that, described many holes of opening along the circle spacing are arranged in along diametric(al) relative in twos, and perpendicular to the described axis in the hole of the described heart placed in the middle.

19, constant velocity turning joint as claimed in claim 16 is characterized in that, described annular ball isolating frame spare has inside and outside spherical surface concentrically with respect to one another.

20, constant velocity turning joint as claimed in claim 16, it is characterized in that, described first group of ball race in described internal connection spare has a smallest radial spacing from the described axis of described internal connection spare, and in addition, described first group of ball race has a curved section and a straightway.

21, constant velocity turning joint as claimed in claim 16, it is characterized in that, described second group of ball race in described external lug part has a maximum radial spacing from the described central axis of described external lug part, and in addition, described second group of ball race has a curved section and a straightway.

22, constant velocity turning joint as claimed in claim 16 is characterized in that, the described external ball surface of described internal connection spare and the described internal ball surface of described external lug part are concentrically with respect to one another.

23, constant velocity turning joint as claimed in claim 16 is characterized in that, described hub and described external lug part link up with a trip ring.

24, constant velocity turning joint as claimed in claim 16 is characterized in that, described external lug part away from an end place of described hub, its wall thickness is thicker.

25, constant velocity turning joint as claimed in claim 16 is characterized in that, is provided with a clasp between described internal connection spare and described external lug part.

26, a kind ofly between diaxon power is reached the constant velocity turning joint of driven shaft from live axle, it comprises:

One internal connection spare, one has the outer spherical surface of a symmetrical axis, one is positioned at the center hole that has spline around the described axis, and first group be formed at ball race described external ball surface, that aim at vertically, described first group of ball race has a smallest radial spacing from the described axis of symmetry, described first group of ball race has a curved section and a straightway, the described external ball surface of described internal connection spare is from the radial spacing of described axis, greater than described first group of ball race;

One input shaft, described input shaft have the spline in the center hole of many described wounded in the battle keys that are loaded on described internal connection spare, and the direction of described many splines is parallel to the axis of described input shaft;

One external lug part, it has an end, one inner spherical surface and one is by described external lug part, the hole that is provided with placed in the middle, described external lug part is with respect to the concentric suit of described internal connection spare, described external lug part also has a central axis, be formed at second group of ball race on described internal ball surface, described second group of ball race has a maximum radial spacing from described central axis, described second group of ball race has a curved section and a straightway, the wall thickness at place, the opposite end of described external lug part is thicker, and described internal ball surface is from little than described second group of ball race of the radial spacing of described central axis;

One annular ball isolating frame spare, it is between described internal connection spare and described external lug part, in order to keep many spherical ball, described annular ball isolating frame has an outer surface, one with the isolated internal surface of described outer surface, the hole of one heart setting placed in the middle and manyly opening of becoming even number along the circle spacing, the hole of Dui Zhuning radially, they are arranged in along diametric(al) in twos relatively and perpendicular to described central axis, each of described many holes of opening along the circle spacing is equipped with a spherical ball, each described spherical ball contacts with described first group and second group of ball race of described internal connection spare and described external lug part respectively, and the described outer surface of described annular ball isolating frame spare and described internal surface are spherical surface concentrically with respect to one another;

One hub, it is connected in a described end of described external lug part, the cavity that described hub has a heart placed in the middle in described external lug part to be provided with; And

One output shaft, it is as the part of the whole of described hub, and described output shaft has an axis that coincides with the described axis of described external lug part.

27, constant velocity turning joint as claimed in claim 26 is characterized in that, the described inner spherical surface of the described outer spherical surface of described internal connection spare and described external lug part concentrically with respect to one another.

28, constant velocity turning joint as claimed in claim 26 is characterized in that, described hub and described external lug part link up with a trip ring.

29, constant velocity turning joint as claimed in claim 26 is characterized in that, also comprises a clasp between described internal connection spare and described input shaft, in order to described internal connection spare is installed on the described input shaft.

30, constant velocity turning joint as claimed in claim 26 is characterized in that, on an end of described output shaft, have many spline devices, each spline device have all along the circle spacing open and vertically with the spline of the described axis alignment of described output shaft.