CN105209775B - Inner ring and the enclosure - Google Patents

Abstract

Provide a kind of combination of inner ring and the enclosure.Inner ring has inner surface, formed with groove in the inner surface.The enclosure has groove in outer surface.Inner ring and the enclosure are axially fixed to together by ring in two grooves.Additionally provide to prevent the device rotated against between inner ring and the enclosure.

Description

Inner ring and the enclosure

The cross reference of associated documents

The application is the pending U.S. Patent Application Serial the 14/105,577th submitted on December 13rd, 2013 Priority, entire contents are merged into herein by reference.

Technical field

A kind of inner ring and the enclosure for constant-velocity joint.

Background technology

Constant-velocity joint includes the inner ring for being connected to gear shaft.By inner ring be connected to gear shaft method and structure have it is a variety of. The connection can prevent or reduce axially opposite motion, and it must be prevented from or reduce relative rotary motion.In connection Circle and gear shaft prior art design be it is complicated, expensive and/or can not be substantially reduced or prevent to axial/rotation Transhipment is dynamic.A kind of simple, cheap inner ring is needed to be connected with gear.

The content of the invention

In one embodiment, inner ring is provided with, the inner ring has inner surface, has the transversal of ellipse in the inner surface Face and formed with elliptical grooves.The enclosure is provided with, the enclosure has outer surface, first end and the second thread head.First End has oval cross section, and the oval cross section is complementary with inner ring oval cross section.First end also has circumferential Groove.Ring is located in inner ring groove and enclosure groove, and inner ring and the enclosure are axially fixed to together.

In another embodiment, inner ring has inner surface, and the inner surface has circular peripheral and extended from the perimeter portion Keyway.The enclosure has outer surface, the first end with circumferential grooves and the second thread head.Key mapping is on enclosure outer surface. There is groove, and the key mapping is in keyway in the key.Ring is located in inner ring groove, enclosure groove and keyway.

In another embodiment, inner ring has inner surface, the inner surface have circular peripheral and in the circumference extremely A few axially extending notch.The enclosure has inner surface, the first end with circumferential grooves, at least one axially extending fork Portion and the second thread head.At least one fork is located in inner ring notch.Ring is located in inner ring groove and enclosure groove to incite somebody to action Inner ring and the enclosure are axially fixed to together.

Brief description of the drawings

When considering by accompanying drawing, by detailed description below, the above will become to those skilled in the art Obtain it is clear that in accompanying drawing：

Fig. 1 is the assembling view of the constant-velocity joint of the feature comprising one embodiment of the present of invention.

Fig. 2A is the end-view of Fig. 1 inner ring；

Fig. 2 B are the sectional side views of Fig. 2A inner ring；

Fig. 2 C are the end-views of Fig. 1 enclosure；

Fig. 2 D are the side views of Fig. 2 C enclosure；

Fig. 3 is the assembling view of the enclosure and inner ring according to another embodiment of the present invention；

Fig. 3 A are the end-views of Fig. 3 inner ring；

Fig. 3 B are the sectional side views of Fig. 3 A inner ring；

Fig. 3 C are the end-views of Fig. 3 enclosure；

Fig. 3 D are the side views of Fig. 3 enclosure；

Fig. 3 E are the side view and end-view of Fig. 3 key；

Fig. 4 is the assembling view of the enclosure and inner ring according to another embodiment of the present invention；

Fig. 4 A are the end-views of Fig. 4 inner ring；

Fig. 4 B are the sectional side views of Fig. 4 A inner ring；

Fig. 4 C are the end-views of Fig. 4 enclosure；

Fig. 4 D are the side views of Fig. 4 enclosure.

Embodiment

It should be appreciated that in addition to clearly conversely specifying, the present invention can have a variety of interchangeable orientations and step Sequentially.It should also be understood that specific device being shown in the drawings and describing in the following description and process are by appended The simple examples embodiment for the inventive concept that claim limits.Therefore, except non-claimed is expressly stated otherwise, otherwise, Specific dimensions, direction or other physical characteristics for being related to the disclosed embodiments are not considered as limitation.

Turning now to Fig. 1, one embodiment using constant-velocity joint 10 of the invention is described.The constant-velocity joint 10 includes Inner ring 12, outer ring 14, retainer 16 and multiple balls 18.Drive shaft tube 20 is connected to the outer surface of outer ring 14.Shield 24 can position Between the inner surface 26 and the enclosure 28 of outer ring 14 to keep chip and moisture outer in joint 10 and lubricant in joint 10.With Same cause, tank 30 can be positioned at the opposite direction of shield 24.

Referring now to Fig. 2 and Fig. 2A-Fig. 2 D, one embodiment of inner ring 12 and the enclosure 28 is described.Inner ring 12 has interior Surface 32, outer surface 34, first end 36 and the second end 38, inner surface 32, outer surface 34, first end 36 and the second end 38 be integral each other.

Inner surface 32 is limited by multiple surfaces.Start from first end 36, be provided with the first inner surface 40.First inner surface 40 to have the first inner surface diameter and its cross section be circular.One group of spline 44 is located on the first inner surface 40, and Axially extend.First inner surface 40 and the direct neighbor of the second inner surface 46 and it is transitioned into the second inner surface 46.

Second inner surface 46 have ellipse, as in Fig. 2A best seen from.As ellipse, the second inner surface 46 has big footpath 48 and path 50.Big footpath 48 is oriented transverse to the rotation axis 52 of joint 10.Big footpath 48 is more than the He of the first inner surface diameter 42 Path 50.

Second inner surface 46, which has, is limited to continuous channel 54 therein.The groove 54 can be located at the He of the first inner surface 40 About centre position between the second end 38.The groove 54 also has ellipse, and the ellipse follows the second inner surface 46 Ellipse.

The outer surface 34 of inner ring 12 is limited by multiple grooves 56.Each groove 56 receives a ball 18.Ball 18 is maintained at Hold in frame 16, as shown in Figure 1.Ball 18 is also received in the groove 56 in the inner surface of outer ring 14.Ball 18 allows inner ring 12 Differential seat angle between outer ring 14, and rotation torque is sent to outer ring 14 from inner ring 12.

The enclosure 28 has first end 58 and the second end 60.First end 58 includes the continuous ditch on outer surface 64 Groove 62.More specifically, so that preferably there is the first land area (land from the inside order of first end 58, first end 58 Area) 66, groove 62, the second land area 68 and stopper section 70.End 58,60, groove 62 and stopper section 70 and the enclosure 28 is integrally formed and be integral with the enclosure 28.

Stopper section 70 is preferably continuous, but this is not essential.As shown in Figure 2 D, stopper section 70 is relative to outer surface 64 be angled.As shown in the illustrated embodiment, stopper section 70 can with substantial lateral joint axis 52 angulation Degree.Land area 78 separates screw thread 72 and stopper section 70.

The second end 60 includes the multiple screw threads 72 integrally formed and integral with the enclosure 28 with the enclosure 28.As shown in figure 1, Enclosure nut 74A can engage with the screw thread 72 of the second end 60.Enclosure nut 74A can be fixed to gear shaft 76.The connection For example it can be realized by circlip and/or threaded connection；Other connected modes are also allowed.

The first end 58 of the enclosure 28 is mutual with ellipse, the ellipse of the ellipse and the second inner surface 46 of inner ring 12 Mend.The enclosure 28 shapes and is sized to coordinate in inner ring 12.More specifically, the ellipse of the enclosure 28 and inner ring 12 is right each other Together, inner ring 12 is located in the enclosure 28, and their complementary shapes prevent that they are pivotably movable with respect each other.

Ring (such as snap ring) 80 is located in enclosure groove 62 and inner ring groove 54, as shown in Figure 1.Ring 80 is fabricated to same time delay Reach in enclosure groove 62 and the groove 54 of inner ring 12.Ring 80 prevents or reduced the axial movement between inner ring 12 and the enclosure 28.

Gear shaft 76 can be located in the hollow inside 82 of the enclosure 28.As shown in figure 1, gear shaft 76 extends fully through cover Set 28.Gear shaft can extend beyond the enclosure 28 and enter in the chamber 84 of inner ring 12, here (the figure of gear shaft engagement splines 44 2B).Gear shaft 76 also extends across the opposite end of the enclosure 28.Gear shaft 76 receives the rotation from rotary movement source, the rotation Motor is, for example, automotive powerplant.Possibility connected mode between gear shaft 76 and the enclosure 28 is as described above so that the two It can rotate together.

Fig. 3 and Fig. 3 A to Fig. 3 E describe another embodiment of inner ring 86 and the enclosure 88.Inner ring 86 has inner surface 90, outer Surface 92, first end 94 and the second end 96.

Inner surface 90 is limited by multiple surfaces.Since first end 94, the first inner surface 98 is provided with.First inner surface 98 have the first inner surface diameter 100, and cross section is circular.First inner surface 98 can have one group of spline 102.Flower Key 102 can extend completely through the first inner surface 98 in the axial direction.In addition, axial splines can be circumferential around the first inner surface 98 Ground positions.First inner surface 98 and the direct neighbor of the second inner surface 104 and it is transitioned into the second inner surface 104.Spline 102 terminates In the transition position.

Second inner surface 104 has the second inner surface diameter 106, as in Fig. 3 A best seen from.Second inner surface diameter 106 are more than the first inner surface diameter 100.Second inner surface 104, which has, is limited to continuous circumferential grooves 108 therein.The groove 108 can be between the first inner surface 98 and the second end 96 about centre position.The groove 108 follows the second inner surface 104, and be also therefore circular.

Second inner surface 104 also has keyway 110.Keyway 110 axially extends the length of the about second inner surface 104. Keyway 110 can have any shape of cross section, but as best seen from, keyway 110 preferably has circle in Fig. 3 A Cross section.Keyway 110 can be integrally formed with inner ring 86.Keyway 110 is located so that it forms the portion of the second inner surface 104 Point；The other parts of keyway 110 extend radially outwardly from the second inner surface 104 in the main body positioned at inner ring 86.

It is provided with cylindrical keys 112.The key 112 can be hollow or solid.The key 112 has complementary external diameter 114, the internal diameter 116 of the external diameter 114 and keyway 110 is roughly equal, or is slightly less than the internal diameter 116 of keyway 110.

The length of key 112 is equal to, or approximately equal to the length of keyway 110.When key 112 is located in keyway 110, key 112 It is equipped with completely wherein.

Key 112 has groove 118, and groove 118 extends basically perpendicular to joint axis 52.When key 112 is located on the enclosure 88 When, the groove 118 and enclosure groove 108 of key are substantially aligned.In order that the groove 118 of the key and enclosure groove 108 are axially right Together, the groove 118 of the key can be located at key 112 preceding 1/3rd at, key 112 about 2/3rds positioned at groove 118 it Afterwards.Under mounted situation, the direction that the groove 118 of the key is directed away from the enclosure is opened wide.The groove 118 of key extends radially into Enter at least 1/3rd of key 112, preferably radially extend at least half of key 112, most preferably radially extend Into at least 2/3rds of key 112.

The outer surface 92 of inner ring 86 is limited by multiple grooves.Each groove 120 receives a ball 122.Ball 122 maintains guarantor Hold in frame, retainer is not shown, but can be understood from Fig. 1.Ball 122 is also received in the inner surface of outer ring In groove, this can also be understood from Fig. 1.Ball 122 allows the differential seat angle between inner ring 86 and outer ring, and rotation is turned round Square is sent to outer ring from inner ring 86.

The enclosure 88 has first end 124 and the second end 126.First end 124 is included by the continuous of outer surface 130 Circumferential grooves 128.More specifically, first end 124 have the first land area 132, groove 128, the second land area 134 with And stopper section 136.End 124,126, groove 128 and stopper section 136 can be integrally formed with the enclosure 88.Stopper section 136 can To be all such as above-mentioned stopper section 70.

The second end 126 includes multiple screw threads 138, and screw thread 138 is integrally formed with the enclosure 88., can such as the similar descriptions of Fig. 1 With nut is engaged with the screw thread 138 of the second end 126 and also with being threadedly engaged on gear shaft, by nut and tooth Wheel shaft links together.Nut can also be connected to clasp.Therefore gear shaft can be connected to inner ring 86 by the nut.Ridge Face region 140 separates screw thread 138 and stopper section 136.

First end 124 has almost circular cross section, the cross section and the circle of the second inner surface 104 of inner ring 86 Cross section is complementary.Recess 202 is arranged in first end 124.Recess 202 extends radially inwardly into the outer surface of the enclosure 88 130.Recess 202 has the curved surface complementary with the outer surface of key 112 204.The direction that the curved surface is directed away from outer surface 204 opens Open.Key 112 is partly rested upon in recess 202.The wall engagement keys 112 of recess 202 so that one in key 112 or groove 108 Individual rotation is sent to another.

Ring (such as snap ring) 142 is located in enclosure groove 128 and inner ring groove 108.Ring 142 is fabricated to while extends to cover In the groove 108 for covering groove 128 and inner ring 86.Ring 142 prevents or reduced the axial movement between inner ring 86 and the enclosure 88.Example Such as, by ring 142 is linking together, inner ring 86 and the enclosure 88 of in enclosure groove 128 and inner ring groove 108 do not allow phase For each other axially movable.

Ring 142 is arranged on key 112 so that key 112 to be optionally fixed to the outer surface 130 of the enclosure 88.More specifically, Ring 142 is located in the groove 118 of key so that the basal part 204 of the groove 118 of the direct contact-key of internal diameter of ring 142.Ring 142, key 112 and the enclosure 88 it is via ring 142 and in the inner ring 86 and adjacent with the second inner surface 104 of inner ring 86.Fixed to the enclosure 88 And the key 112 in keyway 110 prevents the relative rotary motion between the enclosure 88 and inner ring 86.More specifically, working as to reverse When action puts on inner ring 86 or the enclosure 88, key 112 abuts keyway 110.The key 112 of the enclosure 88 is fixed to by ring 142 to be prevented Inner ring 86 rotates relative to the enclosure 88.

As described above, key 112 can be selectively secured to the enclosure 88, or key 112 can be integrally formed with the enclosure 88.

Gear shaft can be located in the hollow inside 144 of the enclosure 88, it is all as previously discussed and Fig. 1 is described.Gear Axle receives the rotation from rotary movement source, all automotive powerplants in this way of the rotary movement source.

Fig. 4 and Fig. 4 A to Fig. 4 D describe another embodiment of inner ring 146 and the enclosure 148.Inner ring 146 has inner surface 150th, outer surface 152, first end 154 and the second end 156.

Inner surface 150 is limited by multiple surfaces.Since first end 154, the first inner surface 158 is provided with.In first Surface 158 has the first inner surface diameter 160.One group of spline 162 can be located on the first inner surface 158 and prolong in the axial direction Stretch, and cross section can be circular.First inner surface 158 and the direct neighbor of the second inner surface 164 and it is transitioned into second Inner surface 164.

As Fig. 4 A are seen, the second inner surface 164 has the second inner surface diameter 166 and is circular.In second Surface diameter 166 is more than the first inner surface diameter 160.Second inner surface 164, which has, is limited to continuous circumferential grooves therein 168.The groove 168 can be between the first inner surface 158 and the second end 156 about centre position.The groove 168 with With the second inner surface 164.Therefore the groove 168 is also circular.

Inner surface 150 includes at least one notch 170.At least one notch 170 is along the first inner surface 158 and second Inner surface 164 and axially extending perpendicular to groove 168.At least one notch 170 extends the length of inner ring 146 substantially.Should At least one notch 170 can have any cross section, such as square.At least one notch 170 and inner ring 146 are integratedly Any position for being formed and being located on inner surface 150.

In a preferred embodiment, there are two notches 170.The notch 170 can be relative to each other with arbitrary week To Distance positioning.As can be from Fig. 4 A understandings, each notch 170 may be positioned such that equally spaced from each other.

The outer surface 152 of inner ring 146 is limited by multiple grooves 174.Each groove 172 receives a ball respectively.Ball 174 maintains In retainer, go out as shown in the embodiment of figure 1.Ball 174 is also received in the groove in the inner surface of outer ring, this It can also be understood from Fig. 1.Ball 172 allows the differential seat angle between inner ring 146 and outer ring, and by rotation torque from inner ring 146 are sent to outer ring.

The enclosure 148 has first end 176 and the second end 178.First end 176 includes continuous on outer surface Circumferential grooves 180.More specifically, first end 176 have the first land area 184, groove 180, the second land area 186 with And stopper section 188.End 176,178, groove 180 and stopper section 188 can be integrally formed with the enclosure 148.

First end 176 also has from its axially extending at least one fork 190.More specifically, at least one fork Portion 190 extends from the end surfaces 192 of first end 176, and is stretched out from the end surfaces cantilevered.At least one fork 190 It is preferably integrally formed with the enclosure 148.

At least one fork 190 preferably has square cross section, but other cross sections are also allowed.No matter How is its cross section, and at least one fork 190 has the shape complementary with least one notch 170.

In a preferred embodiment, there are two forks 190.What the two forks 190 were identical to one another, but this is not It is necessary；They can be different shape and size.Two forks 190 are depicted as about 180 degree apart, but respectively Fork 190 allows to be spaced other angles and exist.

The second end 178 includes multiple screw threads 194 being integrally formed with the enclosure 148.Nut can be with the second end 178 Screw thread 194 engages, and can be engaged with the screw thread on gear shaft or clasp, nut and gear shaft is linked together, such as Shown in Fig. 1 embodiment.Therefore gear shaft is also axially restricted to inner ring 146 by the nut.Land area 196 is by Two ends 178 and stopper section 188 are spaced apart.

First end 176 has round-shaped, and the circle of the second inner surface 164 of circle and inner ring 146 is complementary.

Ring (such as snap ring) 198 is located in enclosure groove 180 and inner ring groove 168.Ring 198 is sized to simultaneously to extend Into the groove 168 of enclosure groove 180 and inner ring 146.Ring 198 prevents or reduced the axial direction fortune between inner ring 146 and the enclosure 148 It is dynamic.

When fork 190 is arranged in notch 170, the combination of fork 190 and notch 170 can prevent inner ring 146 and the enclosure Rotating against between 148.More specifically, the wall of notch 170 abuts fork 190 and prevented between the enclosure 148 and inner ring 146 Rotate against.

Gear shaft as shown in Figure 1 can be located in the hollow inside 200 of the enclosure 148.Gear shaft, which receives, carrys out spinning fortune The rotation in dynamic source, all automotive powerplants in this way of the rotary movement source.

Fixed according to patent statute, describe the present invention, it considers the preferred embodiments of the present invention are presented.However, It should be noted that in the case of without departing from the spirit or scope of the present invention, can with other than as specifically shown with it is described Mode put into practice the present invention.

Claims (11)

1. the combination of a kind of inner ring and the enclosure, including：

Inner ring, has the first inner surface and the second inner surface, and first inner surface limits multiple splines, second inner surface With the first inner surface direct neighbor and no spline, there are keyway and inner ring groove to extend in second inner surface；

The enclosure, it has outer surface, first end and the second end with circumferential grooves；

Key, it is located on the outer surface of the enclosure, has groove in the key, the key mapping is in the keyway；

Ring, in the groove of the inner ring groove, the groove of the enclosure and the key,

Wherein, the groove of the key is directed away from the direction of the enclosure and opened wide.

2. combination as claimed in claim 1, it is characterised in that second inner surface has more straight than first inner surface The big diameter in footpath.

3. combination as claimed in claim 2, it is characterised in that second inner surface axial extends the length of the keyway.

4. combination as claimed in claim 3, it is characterised in that the keyway has circular cross section.

5. combination as claimed in claim 1, it is characterised in that the key has a shape complementary with the keyway and matched Axial length.

6. combination as claimed in claim 1, it is characterised in that the groove of the key and the inner ring groove and the enclosure ditch Groove is axially aligned.

7. combination as claimed in claim 1, it is characterised in that the enclosure has the first land area, the cover in order The groove of set, the second land area and stopper section.

8. combination as claimed in claim 1, it is characterised in that the ring is located in the groove of the key to cause the ring position In on the basal part of the groove of the key.

9. combination as claimed in claim 1, it is characterised in that the key is removeably positioned on the outer surface of the enclosure.

10. the combination of a kind of inner ring and the enclosure, including：

Inner ring, has the first inner surface and the second inner surface, and first inner surface limits multiple splines, second inner surface With the first inner surface direct neighbor and no spline, there are keyway and inner ring groove to extend in second inner surface；

The enclosure, it has outer surface, first end and the second end with circumferential grooves；

Key, it is located on the outer surface of the enclosure, has groove in the key, the key mapping is in the keyway；

Ring, in the groove of the inner ring groove, the groove of the enclosure and the key；And

The first end of the enclosure has the recess on the enclosure outer surface, and the recess extends radially inwardly to institute State in the enclosure,

Wherein, the groove of the key is directed away from the direction of the enclosure and opened wide.

11. the combination of a kind of inner ring and the enclosure, including：

Inner ring, has the first inner surface and the second inner surface, and first inner surface limits multiple splines, second inner surface With the first inner surface direct neighbor and no spline, there are keyway and inner ring groove to extend in second inner surface；

The enclosure, it has outer surface, first end and the second end with circumferential grooves；

Key, it is located on the outer surface of the enclosure, has groove in the key, the key mapping is in the keyway；

Ring, in the groove of the inner ring groove, the groove of the enclosure and the key；And

Wherein, the first end of the enclosure has the recess on the enclosure outer surface, and the recess radially-inwardly prolongs Reach in the enclosure；

Wherein, the key is rested upon in the recess of the enclosure,

Wherein, the groove of the key is directed away from the direction of the enclosure and opened wide.