CN101809305A - Sliding-type constant velocity universal joint - Google Patents

Sliding-type constant velocity universal joint Download PDF

Info

Publication number
CN101809305A
CN101809305A CN200880109034A CN200880109034A CN101809305A CN 101809305 A CN101809305 A CN 101809305A CN 200880109034 A CN200880109034 A CN 200880109034A CN 200880109034 A CN200880109034 A CN 200880109034A CN 101809305 A CN101809305 A CN 101809305A
Authority
CN
China
Prior art keywords
constant velocity
type constant
velocity universal
universal joint
sliding
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.)
Pending
Application number
CN200880109034A
Other languages
Chinese (zh)
Inventor
村上裕志
杉山达朗
松下茂树
山田晴彦
板垣卓
黑田正幸
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 Corp
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
Priority claimed from JP2007255180A external-priority patent/JP2009085327A/en
Priority claimed from JP2008136626A external-priority patent/JP2009097709A/en
Application filed by NTN Corp filed Critical NTN Corp
Priority claimed from PCT/JP2008/065445 external-priority patent/WO2009041211A1/en
Publication of CN101809305A publication Critical patent/CN101809305A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A sliding-type constant velocity universal joint comprises an outer joint member (10) connected to a drive shaft or a driven shaft, an inner joint member (20) connected to the driven shaft or the drive shaft, and a torque transmission element (30) for transmitting torque between the outer joint member (10) and the inner joint member (20). The torque transmission element (30) is movable along a track formed in the outer joint member (10), and a slip-off prevention device is provided at the opening end of the outer joint member (10), whereby the outer joint member (10), the inner joint member (20) contained in the outer joint member (10) and the torque transmission element (30) can be made in a cassette form and can be treated as a single unit.

Description

Sliding-type constant velocity universal joint
Technical field
The present invention relates to a kind of sliding-type constant velocity universal joint that is used in the power transmitting deice of Motor Vehicle or various industrial machineries.Sliding-type constant velocity universal joint not only can carry out angle correcting, can also carry out axial displacement (reeve), has enumerated as its example: tripod type constant velocity universal joint, two eccentric type constant velocity joint, fork pockets type constant velocity joint etc.
Background technique
The transmission of power that will be produced by the motor of Motor Vehicle comprises jack shaft and sliding-type constant velocity universal joint and the fixed-type constant-velocity universal joint installed at its two ends for the transmission shaft of wheel, transmission shaft links via sliding-type constant velocity universal joint and differential mechanism, links via fixed-type constant-velocity universal joint and wheel.Example as sliding-type constant velocity universal joint, tripod type constant velocity universal joint is shown in Figure 12 A and Figure 12 B, for in the structure of inserting as the inside of the outer ring 310,410 of lateral joint member as three ball pins 320 of inner contact member, outer ring 310,410 and three ball pins 320 can carry out axial displacement (reeve).Figure 12 A is the example that the section shape of periphery forms circular outer ring 310, and Figure 12 B is the example that the section shape of periphery forms the corolliform outer ring 410 of three lobes, and this corolla shape is made of minor diameter part 412 that replaces and large-diameter portion 414.Outer ring 310,410 is bowl-shape, equally spaced is formed with three rail slots 314 that extend vertically at the inner edge circumferencial direction.Three ball pins 320 have to three outstanding leg axles 326 of radial direction.At each leg axle 326 rotation cylinder 330 freely is installed.Cylinder 330 is contained in the rail slot 314 of outer ring 310,410 respectively, when injecting (プ ラ Application ジ Application グ), cylinder 330 along the cylinder guide surface 316 of rail slot 314 outer ring 310,410 axially on roll.
In the operation that transmission shaft is assembled in vehicle body etc., exist and have to make transmission shaft to tilt or vertical situation.At this moment, if make tripod type constant velocity universal joint upwards, then since weight three ball pins 320 may be from the outer ring 310,410 comes off.Therefore, in the past as the anticreep of three ball pins 320, snap ring 342 (patent documentation 1) is installed in the open end of outer ring 310,410 week.Snap ring 342 is installed in the outer ring circle (the forming a circular part) groove 340 that 310,410 inner peripheral surface forms, and the diameter of snap ring 342 is littler than the circumscribed circle diameter of 330 groups on the cylinder of the state of installing at leg axle 326.Therefore, snap ring 342 is at cylinder 330 during to the open end side shifting of outer ring 310,410 and its interference, thereby prevents coming off of three ball pins 320.
In patent documentation 2, record following technology: as shown in figure 13, the open end 544 that keeps outer ring 510, make cylinder guide surface 514 sclerosis of the outer ring 510 of tripod type constant velocity universal joint by heat treatment, form protuberance 546 by unhardened open end 544 being carried out plastic working, thereby make this protuberance 546 interfere the anticreep that carries out cylinder with cylinder.Among Figure 13, the scatter diagram case is represented the zone 542 of hardening by heat treatment.
Patent documentation 1: Japan opens clear 61-24528 communique in fact
Patent documentation 2: TOHKEMY 2002-235766 communique
In above-mentioned existing technology, no matter be patent documentation 1 or patent documentation 2, all will form in the three ball pins and cylinder insertion outer ring of one with axle, at the open end of outer ring snap ring is installed afterwards, perhaps must form anti-drop device by plastic working is implemented in the outer ring, very time-consuming at fit on.
Summary of the invention
Therefore, the objective of the invention is to make the assembling of sliding-type constant velocity universal joint to become easy.
The present invention is a sliding-type constant velocity universal joint, it has the lateral joint member that is connected with live axle or driven shaft, the inner contact member that is connected with driven shaft or live axle, the transmission of torque key element that is used for transmitting torque between described lateral joint member and described inner contact member, described transmission of torque key element can move along the track of the inside that is formed at described lateral joint member, wherein, by open end anti-drop device is set at described lateral joint member, and with described lateral joint member, the described inner contact member and the described transmission of torque key element that are contained in the inside of described lateral joint member constitute a box body.At this, so-called " box body " means and do not disperse and can become the as a whole unit of operating.
Described anti-drop device for example can form by snap ring being installed at the open end of described lateral joint member or more by inboard described track protuberance being set at the open end than described lateral joint member.
By at track protuberance being set, because this protuberance interferes with cylinder, so cylinder is laterally during the open end side shifting of joint member and its interference, and it is further mobile thereby limit.Like this, can not realize anticreep even do not increase snap ring of being used for anticreep etc. yet.
In addition, more form protuberance at open end by inboard position than lateral joint member, and the working surface of protuberance is formed the shape that forms acute angle with respect to the open end of lateral joint member, thus, the unnecessary deformation that can suppress the lateral joint member, and just can produce plastic deformation effectively by very little load.So, work hard, can guarantee stable anticreep intensity by configuration, shape to the protuberance that constitutes escapement.
Lean on inboard position configuration protuberance at open end than lateral joint member, and the shape that the face that the shape of protuberance forms the open end side of lateral joint member is acute angle with respect to this open end, thus, can be simply and form protuberance at low cost.That is, protuberance can add clamping tool by use and makes track produce plastic deformation to process.By using the clamping tool that adds that forms the conical surface, can and form a pair of working surface simultaneously with low load.Because the working surface (face of the open end side of lateral joint member) of protuberance forms acute angle with respect to open end, the amount of being pressed into of clamping tool is identical also can guarantee more overhang even therefore add, and just can produce plastic deformation effectively by very little load.
When above-mentioned acute angle is the angle of the working surface of protuberance when being α, preferred angle alpha is that 10 degree are above and below 60 degree, is more preferably the above and following scope of 45 degree of 15 degree.If angle [alpha] is little, for example less than 10 degree then are pressed into the big load of needs when adding clamping tool.On the other hand, big if angle [alpha] becomes, then the outstanding quantitative change of protuberance is big, and load diminishes.But if angle [alpha] surpasses 45 degree, then overhang diminishes, if angle [alpha] surpasses 60 degree, then follows the component to the radial direction outside that steps up to process generation to become big, plays a role in the mode with the track expansion.As if considering above-mentioned situation, angle [alpha] need be more than 10 degree and below 60 degree, more than preferred 15 degree and below 45 degree.
Preferred protuberance is more than the 0.4mm from the projecting height of track.Gap between the track of lateral joint member and the outer circumferential face of cylinder is to the maximum about 0.2mm.Therefore,, protuberance and cylinder are interfered, can stably guarantee necessary anticreep intensity when the projecting height of protuberance is 0.4mm when above.
The width of preferred protuberance i.e. observed being of a size of more than the 4mm on the radial direction of lateral joint member.This is owing to anticreep intensity inequality when the width of protuberance is narrow.
The above anticreep intensity of preferred 490N.So-called anticreep intensity 490N mean by along the lateral joint member axially cylinder is applied load more than the 490N, cylinder can be extracted from the lateral joint member.When constant velocity joint is assembled in vehicle, suppose the peripheral parts situations related such as wheel hub circle with deadweight, also owing to reasons such as vehicles, its weight is 294~490N.Therefore, the anticreep intensity of this situation necessity is more than the 490N.
In sliding-type constant velocity universal joint, transmitting torque when rolling in orbit owing to the transmission of torque key element, so track requires to have high rolling fatigue life.If make the track sclerosis by heat treatment, then can improve rolling fatigue life, can realize the increase of joint life-span and torque capacity.But, to track whole implementation cure process the time, in the process of plastic working, may cause the mother metal crack owing to toughness is not enough.Therefore, in order moderately to step up processing, the contrast protuberance is implemented heat treatment by the track of inboard (opposition side of open end).Thus, it is low and be rich in the unhardened portion of toughness to form cylinder guide surface hardness than sclerosis near opening end, when making this unhardened plastic deformation takes place and when forming protuberance, can to avoid following the mother metal crack of plastic deformation.Owing to can prevent the mother metal crack reliably, therefore preferably the surface hardness of unhardened portion being set for Rockwell hardness (C scale test: following identical) is below the HRC40.
Surface hardening processing as track can be adopted the whole bag of tricks, but, wherein especially can local heating and the selected freedom of case depth with high frequency hardening, and can be controlled to not producing remarkable heat affecting beyond the hardened layer, the advantages such as performance that can keep mother metal therefore had.Therefore, be suitable for above-mentioned like that except near the open end of lateral joint member and make the heat treatment of raceway surface sclerosis.Can certainly adopt quenching based on Carburization Treatment.
The present invention can be applicable to tripod type constant velocity universal joint, two eccentric type constant velocity joint, the such sliding-type constant velocity universal joint of fork pockets type constant velocity joint.
According to the present invention, under the state in inner contact member that will separate and transmission of torque key element insertion outer ring bowl from axle, open end at the lateral joint member is provided with anti-drop device, make it become a box body, thus, when the assembling of sliding-type constant velocity universal joint, become and only be lubricated fat filling, axle insertion, dust-proof cover installation, very simplification.
Description of drawings
Fig. 1 is the longitudinal sectional drawing of box body of the tripod type constant velocity universal joint of expression embodiments of the invention.
Fig. 2 A is the end view drawing of the joint of Fig. 1.
Fig. 2 B is the b-b sectional drawing of Fig. 2 A.
Fig. 3 A is the end view drawing of outer ring.
Fig. 3 B is the b-b sectional drawing of Fig. 3 A.
Fig. 3 C is the plan view that adds clamping tool.
Fig. 4 A is the longitudinal sectional drawing of the outer ring before stepping up to process.
Fig. 4 B is the plan view of Fig. 4 A.
Fig. 4 C is the side view of Fig. 4 B.
Fig. 5 A is the longitudinal sectional drawing of tripod type constant velocity universal joint.
Fig. 5 B is the transverse cross-sectional view of the tripod type constant velocity universal joint of Fig. 5 A.
Fig. 6 is the longitudinal sectional drawing of two eccentric type constant velocity joints.
Fig. 7 is the longitudinal sectional drawing of the inner assembly of Fig. 6.
Fig. 8 is the end view drawing of the outer ring of Fig. 6.
Fig. 9 is the longitudinal sectional drawing of fork pockets type constant velocity joint.
Figure 10 is the end view drawing of the joint of Fig. 9.
Figure 11 is the unfolded drawing of ball grooves of the joint of Fig. 9.
Figure 12 A is the end view drawing of tripod type constant velocity universal joint that is provided with the anti-drop device of clasp-type.
Figure 12 B is the end view drawing of tripod type constant velocity universal joint that is provided with the anti-drop device of clasp-type.
Figure 13 is the local longitudinal sectional drawing of the outer ring of tripod type constant velocity universal joint.
Figure 14 is the longitudinal sectional drawing of the assembly process of expression box body (outer ring, three ball pins, cylinder) and axle.
[symbol description]
10 outer rings (lateral joint member)
12 oral areas
14 rail slots
16 cylinder guide surfaces
18 axle portion
20 3 ball pins (inner contact member)
22 projections
24 splined holes
26 leg axles
27 flanges
28 annular slots
29 raceway grooves
30 cylinders (transmission of torque key element)
32 needle rollers
34 inner washers
36 outer washers
38 circlips
40 protuberances
44 add clamping tool (か め tool)
50
52 annular slots
54 snap rings (Network リ Star プ)
Embodiment
At first, with reference to Fig. 5 A and Fig. 5 B the basic structure of tripod type constant velocity universal joint is narrated.Tripod type constant velocity universal joint is being main constituting component as the outer ring 10 of lateral joint member, as three ball pins 20 of inner contact member and as the cylinder 30 of transmission of torque key element.
Outer ring 10 is made of oral area 12 and axle portion 18, and one in the spline by axle portion (or zigzag fashion is following identical) axial region and the diaxon that will link can reach transmitting torque ground and be connected.Oral area 12 is bowl-shape, and the circumferencial direction trisection posistion in interior week is formed with the rail slot 14 that extends vertically.The two side of rail slot 14 becomes cylinder guide surface 16.
Three ball pins 20 are made of projection 22 and leg axle 26, can be connected on transmitting torque ground with the opposing party in the diaxon that will link by the splined hole 24 that forms in the axial portions of projection 22.Leg axle 26 is outstanding to radial direction from the circumferencial direction trisection posistion of jut 22.Each leg axle 26 is a drum, is formed with annular slot 28 near front end.
Cylinder 30 is rotatably freely supported on leg axle 26 by a plurality of needle rollers 32.Needle roller 32 is gone into the state group of whole rollers between leg axle 26 and the cylinder 30, and the outer circumferential face of leg axle 26 becomes the inboard raceways face of needle roller 32, and the inner peripheral surface of cylinder 30 becomes the outboard raceway face of needle roller 32.Both end sides at needle roller 32 disposes inner washer 34 and outer washer 36, in order to avoid come off and carry out anticreep by circlip 38 in the forward end of leg axle 26.
Outer washer 36 constitutes by the round plate that extends along the radial direction of leg axle 26 with along the cylindrical part that the axial direction of leg axle 26 extends.Circlip 38 is installed on the annular slot 28 of leg axle 26.Because the external diameter of the circlip 38 under the state that annular slot 28 is installed is bigger than the discoid internal diameter of outer washer 36, therefore can limit outer washer 36 moving to the shaft end side of leg axle 26.Because the external diameter of the cylindrical part of outer washer 36 is identical with the circumcircle of needle roller 32 or it is littler than it to omit, therefore can carry out the anticreep of needle roller 32.In addition, the external diameter of the cylindrical part of outer washer 36 is littler than the internal diameter of cylinder 30, the end is expanded as bigger than the internal diameter of cylinder 30.Therefore, cylinder 30 can carry out moving to a certain extent along the axial direction of leg axle 26.
Reduce the example of modular construction omitting inner washer 34, outer washer 36, circlip 38 shown in Fig. 1 and Fig. 2 A and Fig. 2 B.In this case, also cancel the annular slot 28 of leg axle 26, instead, by form the raceway groove 29 that flange 27 forms needle roller 32 usefulness at front end, needle roller 32 is contained in the raceway groove 29, and the two side restrictive axial by raceway groove 29 moves.
Outer ring 10 is for example made through the such operation of abrasive machining of forging processing, machining, heat treatment, axle portion 18 by the carbon steel (for example S53C) of carbon content 0.15~0.60wt%.
The surface hardening that comprises cylinder guide surface 16 in the above-mentioned heat treatment is handled.For example, cylinder guide surface 16 is hardened to more than the HRC55, give the sufficient rolling fatigue life of rolling that can anti-cylinder 30 by heat treatments such as quenchings.Do not implement heat treatment in the cylinder guide surface 16 near the open end of outer ring 10, keep unhardened part.Then, the crack when preventing to form protuberance 40 described later produces, and the surface hardness of this unhardened part is formed below the HRC40.Cylinder 30 can not roll owing to keep in the cylinder guide surface 16 near the open end of outer ring 10 of unhardened part in the normal state, does not have problems especially even therefore omit heat treatment yet.Unhardened part is not implemented heat treatment like that and is kept unhardened rough stock except above-mentioned, can also implement suitable heat treatment in surface hardness is no more than the scope of HRC40 and carries out modified.So, because only the part zone of cylinder guide surface 16 forms unhardened part, so the heat treatment of cylinder guide surface 16 is preferably undertaken by the high frequency hardening that carries out local heating easily and can be controlled to not producing significant heat affecting beyond the hardened layer.In addition, also can be undertaken by carburizing and quenching.
When seeing figures.1.and.2 A and Fig. 2 B, near the cylinder guide surface 16 the opening end of outer ring 10, be formed with protuberance 40.Shown in Fig. 3 A~3C and Fig. 4 A~4C, this protuberance 40 is implemented to step up by the cylinder guide surface 16 that use adds 44 pairs of outer rings 10 of clamping tool, makes cylinder guide surface 16 that local plastic deformation take place and forms.Among Fig. 3 A, symbol B represents the size of protuberance 40 of the radial direction of outer ring 10.In addition, among Fig. 3 B, symbol D represents to step up the degree of depth, and symbol H represents protuberance 40 from the outstanding projecting height of cylinder guide surface 16, and symbol L represents that from the outer ring 10 open end is pressed into the length that adds clamping tool 44 vertically.If it is too shallow to step up depth D, the projecting height H of protuberance 40 diminishes, and if opposite too dark, then processing becomes difficult.Because the purpose that forms protuberance 40 is the anticreep of cylinder 30, therefore, stepping up depth D is being suitably more than the 0.3mm and below the 5mm.
Adding in the clamping tool 44 shown in Fig. 3 C,, the face that contacts with outer ring 10 pressure forms taper, can process two protuberances 40 simultaneously.When attempting stepping up, obtain following opinion by making angle [alpha] carry out various variations.When being pressed into length L (with reference to Fig. 3 B) when comparing, if angle [alpha] little (less than 10 degree) then needs big load with same.If it is big that angle [alpha] becomes, then projecting height H becomes big, and load diminishes.But if angle [alpha] surpasses 45 degree, then projecting height H diminishes, if angle [alpha] surpasses 60 degree, then the distance between the formation of protuberance 40 and the cylinder guide surface faced becomes remarkable to the distortion of widening direction.For above-mentioned reasons, angle [alpha] need be for more than 10 degree and below 60 degree, more than preferred 15 degree and below 45 degree.
Fig. 3 A shows the example of two tracks facing that step up to process simultaneously a phase place.But each track is processed or processed simultaneously three phase places or also sets up in the processing that a phase place is carried out a track.In addition, working position can only be a track both, also can stride its peripheral position.
In addition, outer ring 10 only is shown in Fig. 4 A~4C, but steps up to carry out under the processing state that box body (10,20,30) is changed in that three ball pin accessories (20,30) are inserted the inside of outer ring 10.At this, comprise three ball pins 20 and cylinder 30 and needle roller 32, other fittings and be called three ball pin accessories.Fig. 3 A is illustrated in outer ring 10 and accommodates three ball pin accessories (20,30) and the state of box bodyization.So, by box bodyization, outer ring 10 and three ball pin accessories (20,30) can be operated as a unit.In addition, the anti-drop device of 10 open end setting also can be the type (with reference to Figure 12 A and Figure 12 B) that back-up ring is installed in the outer ring.
As shown in figure 14, on the anticreep of three ball pins 20 and axle 50, use snap ring 54.And, if in the splined hole 42 of three ball pins 20 of the state of box bodyization, be inserted in the axle 50 that snap ring 54 is installed in the annular slot 52 of shaft end, then flexibly hole enlargement and embed the recess of three ball pins 20 of the firm recess an end side that arrives splined hole 24 of snap ring 54.Such as shown, snap ring 54 can be installed to the position of regulation with the posture of regulation, and the front end of axle 50 is set size relationship in the mode that does not contact with the end of the oral area of outer ring 10.
The snap ring 54 of hole enlargement plays a part anticreep with the sidewall interference of the recess of the sidewall of the annular slot 52 of axle 50 and three ball pins 20.The sidewall of the recess of three ball pins 20 forms the inclined-plane that the central axis with respect to three ball pins 20 tilts, thereby the component that axle 50 generation when three ball pins 20 are extracted the thrust load of direction is made snap ring 54 undergauge directions is arranged when effect.Therefore, when axle 50 was subjected to surpassing the thrust load of specified value, snap ring 54 undergauges and enter the annular slot 52 of axle 50 were deviate from from the recess of three ball pins 20, allowed separating of three ball pins 20 and axle 50.So, make the chimeric design that comes off of three ball pins 20 and axle 50, also can carry out exchange as box body by formation.
Under the state that will insert from the three ball pin accessories (20,30) that axle 50 separates in the outer ring 10,10 open end is provided with anti-drop device in the outer ring.Thus, outer ring 10 and three ball pin accessory (20,30) box bodyizations can whole be operated as a unit.By box bodyization, the assembling of tripod type constant velocity universal joint becomes and only is lubricated that fat is filled, axle inserts, dust-proof cover (diagram is omitted) is installed, and it is simple that operation becomes.In order to contrast, if it is then as described below to mention existing technology.That is, make three ball pin accessories chimeric and stop the back to insert the outer ring by snap ring with axle, the open end in the outer ring is provided with anti-drop device afterwards.
More than, be that example is illustrated with the situation that is applicable to tripod type constant velocity universal joint, but the present invention can be suitable on the sliding constant speed universal section header beyond the tripod type constant velocity universal joint of other type and then the tripod-type too.
The example of two eccentric type constant velocity joints shown in Fig. 6~Fig. 8.Two eccentric type constant velocity joints are with as the outer ring 110 of lateral joint member, as the inner ring 120 of inner contact member, as the ball 130 of transmission of torque key element and to keep the retainer 132 of ball 130 be the sliding-type constant velocity universal joint of main composition key element.
Outer ring 110 has the inner peripheral surface 112 of drum, at its circumferencial direction uniformly-spaced to be formed with vertically the ball grooves 114 that extends.At this, outer ring 110 is a flange type, can be connected on transmitting torque ground with a side (live axle or driven shaft) in the diaxon that utilizes this joint to link by integrally formed flange 116.In the following description, flange 116 sides (right side among Fig. 6) of outer ring 110 are called the inboard, outer ring, its opposition side (left side among Fig. 6) is called the outer ring inlet side.Because the outer ring 110 of flange type is at both ends open, therefore need be at inner repack with grease, and at the opening portion mounting cover 118 of inboard, outer ring.In addition, have the formation serrated shaft outer ring of type of axle portion of (zigzag fashion spline) is also arranged.
Inner ring 120 has the outer circumferential face 122 of spherical shape, at its circumferencial direction uniformly-spaced to be formed with vertically the ball grooves 124 that extends.Inner ring 120 can be connected on transmitting torque ground with the opposing party's (driven shaft or live axle) in the diaxon that utilizes this joint to link by the zigzag fashion hole 126 that forms in axial portions.
The ball grooves 114 of outer ring 110 is a pair of with the ball grooves of inner ring 120 124 formations, and group goes into to have a ball 130 between each is to ball grooves 114,124.The number of ball is arbitrarily, but uses 6 or 8 balls 130 usually, and all balls 130 are remained in the same plane by retainer 132.
Retainer 132 is formed with the groove 134 that is used to accommodate ball 130 at circumferencial direction with predetermined distance.The outer circumferential face 136 of retainer 132 has the protruding land portions that the inner peripheral surface 112 with outer ring 110 joins, and the inner peripheral surface 138 of retainer 132 has the concave spherical surface part that the outer circumferential face 122 with inner ring 120 joins.Make the sphere centre of the concave surface ball portion of the sphere centre of protruding land portions of outer circumferential face 136 and inner peripheral surface 138 carry out equidistant departing to axial both sides across the joint center O.Groove 134 is set for, and the axial position configuration that makes the ball center is in the bisection position from the sphere centre of the protruding land portions of the outer circumferential face 136 of retainer 132 to the distance of the sphere centre of the concave spherical surface part of inner peripheral surface 138.
In two eccentric type constant velocity joints, the ball grooves 114 of outer ring 110 is suitable with above-mentioned track.As Fig. 4 and shown in Figure 6, by protuberance 140 being set, can limit ball 130 to the moving of the open end direction of outer ring 110 at ball grooves 114, can prevent that outer ring 110 from extracting from inner ring 120.
The example of the type of fork pockets shown in Fig. 9~Figure 11 constant velocity joint (the one Block type constant speed leisure of Network ロ ス グ Le continue hand).Fork pockets type constant velocity joint is with as the outer ring 210 of lateral joint member, as the inner ring 220 of inner contact member, as the ball 230 of transmission of torque key element and to keep the retainer 232 of ball 230 be main constituting component.
Outer ring 210 is the disk type at this, is formed with ball grooves 214a, 214b at columnar inner peripheral surface 212.Bolt hole 216 uniformly-spaced disposes between ball grooves 214a, the 214b of outer ring 210 and at circumferencial direction.In addition, an end of 210 is equipped with end cap 234 in the outer ring, and dust-proof cover annex 236 is installed in the other end.In addition, the outer ring also has flange type and cone (ベ Le) type except this illustrative disk type.
Inner ring 220 is formed with ball grooves 224a, 224b at the outer circumferential face 222 of spherical shape roughly.Inner ring 220 has splined hole, and shown in dotted line like that can transmitting torque ground chimeric with the splined shaft of axle.
With respect to the ball grooves 214a of the axis tilt of outer ring 210 and with respect to the axis of outer ring 210 to the ball grooves 214b that tilts with described ball grooves 214a opposite direction in the circumferencial direction alternate configurations.Equally, with respect to the ball grooves 224a of the axis tilt of inner ring 220 and with respect to the axis of inner ring 220 to the ball grooves 224b that tilts with described ball grooves 224a opposite direction in the circumferencial direction alternate configurations.
When reference Figure 11, each ball grooves 214a, 214b; 224a, 224b represent with symbol beta with respect to the crossing angle of axis.The ball grooves 224a of the ball grooves 214a of the outer ring 210 of inclined in opposite directions and inner ring 220 formation is a pair of mutually, and the angle that both constitute is represented with 2 β.Equally, the ball grooves 224b of the ball grooves 214b of the outer ring 210 of inclined in opposite directions and inner ring 220 formation is a pair of mutually, and the angle that both constitute is represented with 2 β.
Cross part at the ball grooves 224b of the ball grooves 214b of the cross part of the ball grooves 224a of ball grooves 214a that constitutes a pair of outer ring 210 and inner ring 220 and outer ring 210 and inner ring 220 is organized respectively into ball 230.Figure 10 is that number that example illustrates ball 230 is 6 o'clock figure.
In fork pockets type constant velocity joint, ball grooves 214a, the 214b of outer ring 210 is suitable with above-mentioned track.As Fig. 9 and shown in Figure 10, by protuberance 240 being set, can limit ball 230 to the moving of the open end direction of outer ring 210 at ball grooves 214a, 214b, can prevent that inner ring 220 from 210 extracting from the outer ring.
For the situation that has retainer in the sliding-type constant velocity universal joint, also can protuberance be set at the inner peripheral surface of outer ring.For example,, protuberance is set, can interferes with the outer circumferential face 136 of retainer 132 and limit mobile by inner peripheral surface 112 in outer ring shown in Figure 6 110 in the situation of fork pockets type constant velocity joint.

Claims (13)

1. sliding-type constant velocity universal joint, have: the lateral joint member that is connected with live axle or driven shaft, the inner contact member that is connected with driven shaft or live axle, be used for the transmission of torque key element of transmitting torque between described lateral joint member and described inner contact member, described transmission of torque key element can move along the track of the inside that is formed at described lateral joint member, wherein
By open end anti-drop device is set, and described lateral joint member, the described inner contact member of inside that is contained in described lateral joint member and described transmission of torque key element are constituted a box body at described lateral joint member.
2. sliding-type constant velocity universal joint as claimed in claim 1, wherein,
Form described anti-drop device by more protuberance being set by inboard described track at open end than described lateral joint member.
3. sliding-type constant velocity universal joint as claimed in claim 2, wherein,
The face of the described open end side of described protuberance is acute angle with respect to described open end.
4. sliding-type constant velocity universal joint as claimed in claim 3, wherein,
Described acute angle is below above 60 degree of 10 degree.
5. as claim 2,3 or 4 described sliding-type constant velocity universal joints, wherein,
Described protuberance is more than the 0.4mm from the projecting height of described track.
6. as each described sliding-type constant velocity universal joint in the claim 2~5, wherein,
The outstanding width of described protuberance is more than the 4mm.
7. as each described sliding-type constant velocity universal joint in the claim 2~6, wherein,
More implementing based on the heat treated quenching of high frequency than described protuberance by inboard described track.
8. as each described sliding-type constant velocity universal joint in the claim 2~6, wherein,
In the quenching of described track enforcement based on Carburization Treatment.
9. sliding-type constant velocity universal joint as claimed in claim 1, wherein,
Form described escapement by snap ring being installed at the open end of described lateral joint member.
10. as each described sliding-type constant velocity universal joint in the claim 1~9, wherein,
Anticreep intensity is more than 490N.
11. as each described sliding-type constant velocity universal joint in the claim 1~10, wherein,
Described sliding-type constant velocity universal joint is a tripod type constant velocity universal joint.
12. as each described sliding-type constant velocity universal joint in the claim 1~10, wherein,
Described sliding-type constant velocity universal joint is two eccentric type constant velocity joints.
13. as each described sliding-type constant velocity universal joint in the claim 1~10, wherein,
Described sliding-type constant velocity universal joint is a fork pockets type constant velocity joint.
CN200880109034A 2007-09-28 2008-08-28 Sliding-type constant velocity universal joint Pending CN101809305A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2007-255180 2007-09-28
JP2007255180A JP2009085327A (en) 2007-09-28 2007-09-28 Sliding type constant velocity universal joint and its outer side joint member
JP2007255216 2007-09-28
JP2007-255216 2007-09-28
JP2008-136626 2008-05-26
JP2008136626A JP2009097709A (en) 2007-09-28 2008-05-26 Sliding-type constant velocity universal joint
PCT/JP2008/065445 WO2009041211A1 (en) 2007-09-28 2008-08-28 Sliding-type constant velocity universal joint

Publications (1)

Publication Number Publication Date
CN101809305A true CN101809305A (en) 2010-08-18

Family

ID=42610045

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200880109034A Pending CN101809305A (en) 2007-09-28 2008-08-28 Sliding-type constant velocity universal joint

Country Status (2)

Country Link
CN (1) CN101809305A (en)
DE (1) DE112008002567T5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103352927B (en) * 2008-06-24 2015-11-18 株式会社捷太格特 sliding type tripod constant velocity joint
CN107956811A (en) * 2017-09-30 2018-04-24 浙江向隆机械有限公司 A kind of constant velocity driving shaft
CN118500710A (en) * 2024-07-16 2024-08-16 佛山勇一精锻有限公司 Durable experimental apparatus of cross universal joint

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016201775A1 (en) 2016-02-05 2017-08-10 Schaeffler Technologies AG & Co. KG Roller for a pod joint
DE102016201776B4 (en) 2016-02-05 2017-10-05 Schaeffler Technologies AG & Co. KG Roller for a pod joint

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158513A (en) 1978-06-02 1979-12-14 Dana Corp Fourrcycle internal combustion engine
JP2002235766A (en) 2001-02-08 2002-08-23 Ntn Corp Tripod type constant velocity universal joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103352927B (en) * 2008-06-24 2015-11-18 株式会社捷太格特 sliding type tripod constant velocity joint
CN107956811A (en) * 2017-09-30 2018-04-24 浙江向隆机械有限公司 A kind of constant velocity driving shaft
CN118500710A (en) * 2024-07-16 2024-08-16 佛山勇一精锻有限公司 Durable experimental apparatus of cross universal joint
CN118500710B (en) * 2024-07-16 2024-09-13 佛山勇一精锻有限公司 Durable experimental apparatus of cross universal joint

Also Published As

Publication number Publication date
DE112008002567T5 (en) 2010-10-21

Similar Documents

Publication Publication Date Title
US10207536B2 (en) Drive wheel bearing and method of manufacturing the same
EP2284021B1 (en) Method for forming a wheel bearing device
US7052400B2 (en) Constant velocity universal joint
KR101195279B1 (en) Hub unit, rolling bearing device, producing method for rolling bearing device, and assembling device and assembling method for rolling bearing device
JP2002061661A (en) Driving unit for wheel
EP1179440B1 (en) Bearing device for drive wheel of a vehicle
CN101809305A (en) Sliding-type constant velocity universal joint
EP1777079B1 (en) Wheel drive unit
WO2005111471A1 (en) Helical gear assembly
US10962058B2 (en) Rotator support shaft, method for manufacturing rotator support shaft, and roller bearing
US20120329564A1 (en) Tripod constant velocity universal joint
JP2002235766A (en) Tripod type constant velocity universal joint
US20190375020A1 (en) Rolling bearing ring by metal injection molding process
JP2001113906A (en) Bearing unit for driving wheel
JP5099875B2 (en) Wheel bearing device
JP2001301407A (en) Hub unit for vehicle
US20050064977A1 (en) Roller/retainer assembly for planetary gear and planetary gears support using the same
JP2003074569A (en) Bearing device for wheel
EP2113394B1 (en) Bearing for wheel and method for manufacturing the same
JP2003097577A (en) Bearing device for wheel
JP3910768B2 (en) Drive wheel bearing unit
JP3870525B2 (en) Trunnion of toroidal continuously variable transmission
JP6429441B2 (en) Wheel bearing device, intermediate body, and manufacturing method thereof
JP4071965B2 (en) Drive wheel bearing device
EP4184036A1 (en) Toroidal continuously variable transmission

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20100818