CN104154135A - Improved constant-speed transmission shaft - Google Patents
Improved constant-speed transmission shaft Download PDFInfo
- Publication number
- CN104154135A CN104154135A CN201410371778.3A CN201410371778A CN104154135A CN 104154135 A CN104154135 A CN 104154135A CN 201410371778 A CN201410371778 A CN 201410371778A CN 104154135 A CN104154135 A CN 104154135A
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- China
- Prior art keywords
- spline
- transmission shaft
- ball
- improved constant
- limiting stopper
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Abstract
The invention discloses an improved constant-speed transmission shaft which comprises an intermediate shaft. A first spline and a second spline are arranged at two ends of the intermediate shaft respectively, the first spline is connected with an outer ball cage, the second spline is connected with an inner ball cage which slidably sleeves the second spline axially in an inserted manner, a boss and a limiting block are arranged at two ends of the second spline respectively, the boss is formed on the outer surface of the intermediate shaft, and the limiting block is fixed on the outer end face of the second spline; the inner ball cage comprises a starlike sleeve, an annular bell-like shell, balls and a retainer, grooves corresponding in position are formed in the outer surface of the starlike sleeve and in the inner wall of the annular bell-like shell, each two adjacent grooves are in splayed distribution, and windows of the retainer enable the balls to move circumferentially but limit axial displacement of the balls. Maximum displacement is realized by fully utilizing length of the intermediate shaft while integral strength is guaranteed, structure of the inner ball cage is improved, and the inner ball cage has an axial displacement function while meeting requirements on large-angle rotation.
Description
technical field:
The present invention relates to vehicle transmission technical field of structures, relate in particular to a kind of improved constant-velocity transmission shaft.
background technique:
Constant-velocity transmission shaft is that the axle that two axis are not overlapped couples together, and makes diaxon with the mechanism of identical angular velocity transmission campaign, and its effect is that the power of motor is delivered to car-wheel from speed changer, meets the requirement of vehicular transmission shaft outer end corner.
The ball cage that existing constant-velocity transmission shaft generally includes jack shaft and is connected with jack shaft two ends, wheel is when turning to, jack shaft needs the axially movable corner that simultaneously also needs to take into account, the transmission shaft of Gu Chuantong normally one end is installed rotating ball cage, and the other end installation realizes axially movable ball cage, but the axial displacement of this structure and rotation angle are all very restricted, cannot meet the requirement of existing vehicle.
For this problem, those skilled in the art constantly improve and test, for example the patent No. is 200910302014.8 to have the constant-velocity transmission shaft of scalable jack shaft, on jack shaft, increased mobile vertically function, at two ends, all connect the ball cage that can realize large rotation angle, although this structure can be taken into account large axial displacement and large rotation angle simultaneously, but jack shaft is to be subject to for a long time large torsion, in intensity, be subject to so very large impact, the vehicle that is applicable to using has been had to certain limitation.
For example the patent No. is 201320382610.3 1 kinds of constant velocity driving shafts again, spline by ball cage sleeve on jack shaft slides, realize in displacement amount space very limited and that need to increase mobile terminal ball cage outer race, increase cost, also affect intensity, in addition, existing spline two ends do not increase limit structure or place jump ring and carry out spacingly by process circular groove on spline, and the spline length that is positioned at jump ring outer side surface cannot be utilized.
summary of the invention:
Object of the present invention is exactly in order to solve existing issue, and provide a kind of improved constant-velocity transmission shaft, the length that can make full use of jack shaft under the prerequisite that guarantees bulk strength realizes maximum displacement amount, improved internal spherical cage structure simultaneously, made internal spherical cage when meeting big angle rotary, there is axial displacement.
Technology solution of the present invention is as follows:
Improved constant-velocity transmission shaft, it includes jack shaft, described jack shaft two ends are respectively equipped with the first spline and the second spline, described the first spline joint has external ball cage, and described the second spline joint has internal spherical cage, and described internal spherical cage slides sleeve vertically on the second spline, described the second spline two ends are respectively equipped with boss and limiting stopper, described boss forming is in jack shaft outer surface, and described limiting stopper is fixed on the second spline exterior edge face, and boss and limiting stopper prevent that internal spherical cage from departing from the second spline when sliding.
As preferably, described limiting stopper boundary dimension is greater than the second spline boundary dimension and the second spline exterior edge face is close in limiting stopper side.
As preferably, described internal spherical cage includes the star sleeve matching with the second spline, annular outer race, ball and retainer.
As preferably, described star sleeve outer surface all forms the corresponding groove in position with annular outer race inwall, on same outer surface or same inwall, every two adjacent grooves are all the distribution of " eight " font, and the corner dimension of every two adjacent trenches axis projection lines equates, opposite direction, and corner dimension is 20 ~ 40 °.
As preferably, described retainer is for annular and offer the window matching with steel ball, described each window is more than or equal to every groove along the length B of circumferential direction along the length A of retainer outer periphery circumferential direction, and window makes ball move but to limit ball generation axial displacement along circumferential direction.
As preferably, described star sleeve center diameter is gradual shrinkage to the diameter at its two ends, and star sleeve can radially rotate.
As preferably, described the second spline length L is vertically the star sleeve axial thickness M of 1.5 ~ 2 times.
As preferably, described " eight " font groove the best is three pairs, and is uniformly distributed along central shaft.
Beneficial effect of the present invention is:
1, the present invention realizes axial slip by internal spherical cage sleeve on second spline of jack shaft one end, and two ends have increased limit structure, and the second spline exterior edge face is limiting stopper fixedly, and whole the second flower key length can be fully used;
2, the present invention has improved internal spherical cage structure, adopt annular outer race, " eight " font groove, simultaneously retainer window makes ball move but to limit ball generation axial displacement along circumferential direction, internal spherical cage is reached and when meeting large rotation angle, have axial displacement;
3, structure of the present invention realize internal spherical cage along in the second spline slippage in conjunction with improved internal spherical cage, greatly reduced the axial length of jack shaft the second spline, save cost of material.
accompanying drawing explanation:
Fig. 1 is perspective view of the present invention;
Fig. 2 is the decomposing schematic representation of internal spherical cage end of the present invention;
Fig. 3 is the present invention's the second splined end structural representation;
Fig. 4 is star sleeve structural representation of the present invention;
Fig. 5 is the generalized section of retainer of the present invention.
In figure: 1, jack shaft; 2, external ball cage; 3, internal spherical cage; 4, limiting stopper; 11, the second spline; 12, boss; 31, star sleeve; 32, annular outer race; 33, ball; 34, retainer; 35, groove; 341, window; The second spline length L; Star sleeve axial thickness M; Window circumferential direction length A; Groove circumferential direction length B.
embodiment:
As Figure 1-5, improved constant-velocity transmission shaft, it includes jack shaft 1, described jack shaft 1 two ends are respectively equipped with the first spline and the second spline 11, described the first spline joint has external ball cage 2, described the second spline 11 is connected with internal spherical cage 3, described internal spherical cage 3 slides sleeve vertically on the second spline 11, described the second spline 11 two ends are respectively equipped with boss 12 and limiting stopper 4, described boss 12 takes shape in jack shaft 1 outer surface, described limiting stopper 4 is fixed on the second spline 11 exterior edge faces, and boss 12 affects transmission with limiting stopper 4 for preventing internal spherical cage from departing from spline.
Particularly, described limiting stopper 4 boundary dimension are greater than the second spline 11 boundary dimension and the second spline 11 exterior edge faces are close in limiting stopper 4 sides, it can be welding that limiting stopper 4 is fixedly connected with the second spline 11 exterior edge faces, also can be for being spirally connected or other are fixedly connected with mode, and limiting stopper 4 profiles can be polygonal, circular as most preferably, the thickness of limiting stopper 4 is greater than 4mm, and the too thin meeting of thickness causes intensity low and affect position-limiting action.
Particularly, described internal spherical cage 3 includes star sleeve 31, annular outer race 32, ball 33 and the retainer 34 matching with the second spline 11.
Particularly, described star sleeve 31 outer surfaces all form the corresponding groove in position 35 with annular outer race 32 inwalls, on same outer surface or same inwall, every two adjacent grooves 35 are all the distribution of " eight " font, and the corner dimension of every two adjacent trenches 35 axis projection lines equates, opposite direction, and corner dimension is 20 ~ 40 °.
Particularly, described retainer 34 is for annular and offer the window 341 matching with ball 33, described each window 341 is more than or equal to every groove 35 along the length B of circumferential direction along the length A of retainer 34 outer periphery circumferential direction, and window 341 makes ball 33 move but to limit ball generation axial displacement along circumferential direction.
Particularly, described star sleeve 31 center diameters are gradual shrinkage to the diameter at its two ends, and star sleeve 31 is positioned at annular outer race 32 can radial rotating.
Particularly, described the second spline 11 length L is vertically the star sleeve 31 axial thickness M of 1.5 ~ 2 times.
Particularly, described " eight " font groove 35 the bests are three pairs, and are uniformly distributed along central shaft.
Working principle of the present invention is: the annular outer race 32 of internal spherical cage 3 is connected with drive unit, and annular outer race 32 drives star sleeve 31 to rotate while rotating, thereby drives to external ball cage 2 by jack shaft 1, realizes wheel and drives.
In the course of the work, when needing realization to turn to, also need to meet and there is axial telescopic displacement, the present invention realizes axial stretching displacement by internal spherical cage 3 sleeves on second spline 11 of jack shaft 1 one end, and the boss 12 that the second spline 11 two ends arrange guarantees that with limiting stopper 4 internal spherical cage 3 does not depart from the second spline 11 and affects transmission, in addition, internal spherical cage 3 structures have been improved, adopt annular outer race 32, " eight " font groove 35, retainer 34 windows 341 make ball 33 move but to limit ball 33 generation axial displacements along circumferential direction simultaneously, as Fig. 2, Fig. 4, shown in Fig. 5, groove 35 all tilts, therefore the rolling route of ball 33 is also for tilting, the route tilting can resolve into axial displacement and circumferentially displacement, therefore meeting ball 33, retainer 34 windows 341 there is the displacement amount rolling along circumferentially, annular outer race 32 can have the displacement amount of axial direction, thereby compare traditional jack shaft 1, in the second spline 11 length when identical, axial displacement effectively improves, save cost of material, and do not affect bulk strength.
The foregoing is only preferred embodiment of the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, should belong to the scope of protection of the invention.
Claims (7)
1. improved constant-velocity transmission shaft, it includes jack shaft (1), described jack shaft (1) two ends are respectively equipped with the first spline and the second spline (11), described the first spline joint has external ball cage (2), described the second spline (11) is connected with internal spherical cage (3), it is characterized in that: described internal spherical cage (3) slides sleeve vertically on the second spline (11), described the second spline (11) two ends are respectively equipped with boss (12) and limiting stopper (4), described boss (12) takes shape in jack shaft (1) outer surface, described limiting stopper (4) is fixed on the second spline (11) exterior edge face, boss (12) prevents that with limiting stopper (4) internal spherical cage (3) from departing from the second spline (11) when sliding.
2. improved constant-velocity transmission shaft according to claim 1, is characterized in that: described limiting stopper (4) boundary dimension is greater than the second spline (11) boundary dimension and the second spline (11) exterior edge face is close in limiting stopper (4) side.
3. improved constant-velocity transmission shaft according to claim 1, is characterized in that: described internal spherical cage (3) includes the star sleeve (31) matching with the second spline (11), annular outer race (32), ball (33) and retainer (34).
4. improved constant-velocity transmission shaft according to claim 3, it is characterized in that: described star sleeve (31) outer surface all forms the corresponding groove in position (35) with annular outer race (32) inwall, on same outer surface or same inwall, every two adjacent grooves (35) are all the distribution of " eight " font, and the corner dimension of every two adjacent trenches (35) axis projection line equates, opposite direction, and corner dimension is 20 ~ 40 °.
5. according to improved constant-velocity transmission shaft described in claim 3 or 4, it is characterized in that: described retainer (34) is for annular and offer the window (341) matching with ball (33), described each window (341) is more than or equal to every groove (35) along the length B of circumferential direction along the length A of retainer (34) outer periphery circumferential direction, and window (341) makes ball (33) move but to limit ball generation axial displacement along circumferential direction.
6. improved constant-velocity transmission shaft according to claim 3, is characterized in that: described star sleeve (31) center diameter is gradual shrinkage to the diameter at its two ends, and star sleeve (31) is positioned at annular outer race (32) can radial rotating.
7. according to improved constant-velocity transmission shaft described in claim 1 or 3, it is characterized in that: described the second spline (11) length L is vertically star sleeve (31) the axial thickness M of 1.5 ~ 2 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371778.3A CN104154135A (en) | 2014-07-31 | 2014-07-31 | Improved constant-speed transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371778.3A CN104154135A (en) | 2014-07-31 | 2014-07-31 | Improved constant-speed transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104154135A true CN104154135A (en) | 2014-11-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410371778.3A Pending CN104154135A (en) | 2014-07-31 | 2014-07-31 | Improved constant-speed transmission shaft |
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| CN (1) | CN104154135A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594309A (en) * | 2019-09-24 | 2019-12-20 | 温州聚泉汽车部件有限公司 | Ball cage type universal joint transmission device |
| CN113799834A (en) * | 2021-09-29 | 2021-12-17 | 吉林大学 | Driving belt wheel mechanism for RE type axle railway passenger car belt transmission shaft drive power supply system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03277822A (en) * | 1990-03-27 | 1991-12-09 | Toyoda Mach Works Ltd | Constant velocity joint |
| DE10031379A1 (en) * | 2000-06-28 | 2002-02-21 | Volkswagen Ag | Double offset slip joint has ball grooves of one pair at angle to common rotation axis of joint bush and inner joint body |
| CN201078412Y (en) * | 2007-09-11 | 2008-06-25 | 周家儒 | Driving axle assembly with double compensation and large angle of swing constant velocity universal joint |
| CN101966814A (en) * | 2009-07-28 | 2011-02-09 | 石宝枢 | Double-seven-groove constant velocity universal joint transmission shaft assembly |
| CN202056215U (en) * | 2011-05-19 | 2011-11-30 | 万向钱潮股份有限公司 | Universal coupling capable of removing axial clearance |
| CN102612609A (en) * | 2009-11-25 | 2012-07-25 | Ntn株式会社 | Stationary constant-velocity universal joint |
| CN204025409U (en) * | 2014-07-31 | 2014-12-17 | 浙江凯迪汽车部件工业有限公司 | Improved constant-velocity transmission shaft |
-
2014
- 2014-07-31 CN CN201410371778.3A patent/CN104154135A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03277822A (en) * | 1990-03-27 | 1991-12-09 | Toyoda Mach Works Ltd | Constant velocity joint |
| DE10031379A1 (en) * | 2000-06-28 | 2002-02-21 | Volkswagen Ag | Double offset slip joint has ball grooves of one pair at angle to common rotation axis of joint bush and inner joint body |
| CN201078412Y (en) * | 2007-09-11 | 2008-06-25 | 周家儒 | Driving axle assembly with double compensation and large angle of swing constant velocity universal joint |
| CN101966814A (en) * | 2009-07-28 | 2011-02-09 | 石宝枢 | Double-seven-groove constant velocity universal joint transmission shaft assembly |
| CN102612609A (en) * | 2009-11-25 | 2012-07-25 | Ntn株式会社 | Stationary constant-velocity universal joint |
| CN202056215U (en) * | 2011-05-19 | 2011-11-30 | 万向钱潮股份有限公司 | Universal coupling capable of removing axial clearance |
| CN204025409U (en) * | 2014-07-31 | 2014-12-17 | 浙江凯迪汽车部件工业有限公司 | Improved constant-velocity transmission shaft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594309A (en) * | 2019-09-24 | 2019-12-20 | 温州聚泉汽车部件有限公司 | Ball cage type universal joint transmission device |
| CN113799834A (en) * | 2021-09-29 | 2021-12-17 | 吉林大学 | Driving belt wheel mechanism for RE type axle railway passenger car belt transmission shaft drive power supply system |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |
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| RJ01 | Rejection of invention patent application after publication |