CN104863977A - Eccentric four ball pin and concentric ball cage combined constant velocity universal joint transmission shaft assembly - Google Patents
Eccentric four ball pin and concentric ball cage combined constant velocity universal joint transmission shaft assembly Download PDFInfo
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- CN104863977A CN104863977A CN201410057914.1A CN201410057914A CN104863977A CN 104863977 A CN104863977 A CN 104863977A CN 201410057914 A CN201410057914 A CN 201410057914A CN 104863977 A CN104863977 A CN 104863977A
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- constant velocity
- transmission shaft
- ball
- velocity universal
- raceway groove
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Abstract
The invention discloses an eccentric four ball pin and concentric ball cage combined constant velocity universal joint transmission shaft assembly. The assembly consists of a concentric ball cage combined constant velocity universal joint, an eccentric four ball pin type constant velocity universal joint, a transmission shaft, sealing covers, hoops, a retainer ring and the like. A star-shaped sleeve and a four-pin frame at the two ends fit involute outer spines at the two ends of the transmission shaft through involute inner splines; constant velocity universal joints at the two ends respectively use large and small hoops for clamping the sealing covers at the two ends on respective shells and the two ends of the transmission shaft. Motions and torques can be transferred when driving and driven shaft synchronously have angular displacements and axial displacements.
Description
Art:
The present invention relates to a kind of driving-shaft assembly, more particularly, when master and slave moving axis has certain angular displacement and axial displacement simultaneously, bias four ball pin and the homocentric sphere cage combined type constant velocity cardan joint transmission shaft assembly of motion and torque can be transmitted.
Background technique:
The typical structure of constant velocity cardan joint transmission shaft assembly is: fixed type constant velocity cardan joint and telescopic type constant velocity universal joint add transmission shaft again and some annexes formed.The former modal concrete structure of this structural type is: six channel ball cage type constant velocity universal joints add three ball pin style constant speed universal joint and add transmission shaft and some annexes again.The constant velocity cardan joint transmission shaft assembly of this original structure, shows through long-term use, has following deficiency:
(1) rzeppa universal joint of conventional construction is six steel balls, the structure of six groups of raceway grooves, and inside does not realize optimized design, makes bearing capacity low, and steel ball and raceway groove wear and tear and aggravate, and physical dimension is huge, easily occurs early failue.
(2) due to the bias of outer race and star sleeve raceway groove and its internal and external spherical surfaces, cause outer race and star sleeve raceway groove end walls thickness ununiformity, make wall thickness thin location very easily produce wearing and tearing and lose efficacy.
(3) owing to there is throw of eccentric, for processing, inspection and assembling bring very large difficulty.
(4) owing to being with the outer race of throw of eccentric and star sleeve wall unevenness, very easily produce that heat-treated sturcture is uneven, hardness is uneven, the defect such as distortion and crackle.
(5) three ball pin bearings of three ball pin style constant speed universal joint, ball only has three, and bearing capacity is not enough far away.
Three balls in (6) three ball pin bearings are symmetrical structures, and not only bearing capacity is little, and discontinuity, to improve bearing capacity, are forced to only have increased in size and specification, add weight and add the difficulty of main frame geometrical arrangements.
(7) housing of conventional construction only has three raceway grooves, does not make full use of the useful space, causes material to increase, and weight increases, and makes overall three ball pin style constant speed universal joint layout, bearing torque etc. not realize science, reasonable, best coupling.
Summary of the invention:
In order to overcome some deficiencies of conventional construction constant velocity cardan joint transmission shaft assembly, the present invention is to solve the unreasonable structure that original structure exists, the problems such as bearing capacity is low, easy inefficacy, devise a kind of bias four ball pin and homocentric sphere cage combined type constant velocity cardan joint transmission shaft assembly of new structure.
The technical solution adopted for the present invention to solve the technical problems is:
Fixed type constant velocity cardan joint adopts seven combination channel ball cage type constant velocity universal joints of seven steel balls and seven groups of raceway grooves, and outer race overlaps with star sleeve channel center, and internal and external spherical surfaces is eccentric; Telescopic type constant velocity universal joint adopts eccentric four ball-pin type constant velocity universal joints; Centre adds transmission shaft.For making this assembly realize good sealing, two ends all devise bellows, and seven raceway groove star sleeves, the four pin framves at two ends are connect by spline and transmission shaft.
The invention has the beneficial effects as follows:
Eccentric four ball pins and homocentric sphere cage constant velocity universal save driving-shaft assembly and steadily, flexibly, reliably and accurately can not only transmit and move and torque, and compact structure, rationally, transmission efficiency is high, improves bearing capacity, increase the service life, be convenient to processing, inspection and assembling.
Accompanying drawing illustrates:
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the positive insight structural map of longitudinal direction of the present invention, in figure: (1) seven combination channel ball cage type constant velocity universal joint; (2) Steel Cable Baffle Ring; (3) the large clip of fixed end; (4) fixed end seal closure; (5) the little clip of fixed end; (6) transmission shaft; (7) the little clip of telescopic end; (8) telescopic end seal closure; (9) the large clip of telescopic end; (10) back-up ring; (11) eccentric four ball-pin type constant velocity universal joints
Embodiment:
In the drawings: seven combinations channel ball cage type universal joint (1), are made up of seven raceway groove outer races, seven raceway groove star sleeves, seven fenestra nonconcentric cages and seven steel balls etc.Seven raceway groove outer races and seven raceway groove star sleeve channel center overlap, and raceway groove element line is that straight line and circular arc are combined.The inner ball surface of outer race has a throw of eccentric apart from channel center, and star sleeve outer spherical surface centre distance channel center also has a throw of eccentric, and these two throw of eccentric are equal.In the inner ball surface and seven raceway groove star sleeve outer spherical surfaces of seven raceway groove outer races, all circumference partially has plain line is seven raceway grooves that straight line adds circular arc.They contact with seven steel ball conjugation respectively, seven raceway groove outer race inner ball surface and seven fenestra nonconcentric cage outer spherical surface Spielpassung, seven raceway groove star sleeve inner ball surface and seven fenestra nonconcentric cage outer spherical surface Spielpassung.The internal and external spherical surfaces center of seven fenestra nonconcentric cages is placed in the both sides of fenestra center (widthwise central) respectively, and apart from equal.The circumferentially seven decile fenestras of seven fenestra nonconcentric cages clamp seven steel balls respectively in respective raceway groove, realize the function of transmitting torque.Bias four ball-pin type constant velocity universal joint (11) of telescopic end, four groups of some needle rollers are filled respectively on the decile bearing pin of four pin framves, then respectively four eccentric ball tape loaded there is (eccentric ball internal diameter coordinates with needle roller group crest clearance) on the bearing pin of four groups of needle rollers, after four pin frame four bearing pin tops are respectively charged into back-up ring, again four Steel Cable Baffle Rings are respectively charged in the circlip groove of four bearing pins, for locking back-up ring.Constitute totally four groups of single four ball pin bearings filling needle roller like this.Four eccentric balls of this four ball pins bearing coordinate with the outer raceway groove of the circumferentially quartering of four post pot shells respectively, seven raceway groove star sleeves of concentric seven channel constant velocity universal joints, four pin framves of four ball pin bearings are coordinated by the involute outer spline of involute inner spline with transmission shaft (6), respectively by Steel Cable Baffle Ring (3) and back-up ring (10) axial locking, after two ends constant velocity universal joint installs, respectively fitting tight cover again, respectively by the large and small locked clip device in two ends at respective shell and transmission shaft (6) two ends.Form bias of the present invention and homocentric sphere cage combined type constant velocity cardan joint transmission shaft assembly.Under realizing there is the situation of certain angular displacement and axial displacement at the same time, steadily, flexibly, reliably, accurately can transmit motion and the function of torque.
Claims (3)
1. constant velocity cardan joint transmission shaft assembly, is made up of seven combination channel ball cage type constant velocity universal joints, 7-channel double offset formula constant velocity universal joint, transmission shaft, back-up ring, seal closure etc.It is characterized in that: fixed end adopts seven combination channel ball cage type constant velocity universal joints, and telescopic end adopts eccentric four ball-pin type constant velocity universal joints, and centre is connect by transmission shaft, and there is sealing configuration at two ends.When master and slave moving axis has certain angular displacement and axial displacement simultaneously, motion and torque can be transmitted.
2. bias four ball pin according to claims 1 and homocentric sphere cage combined type constant velocity cardan joint transmission shaft assembly, is characterized in that: seven combination channel ball cage type constant velocity universal joints of fixed end are made up of seven raceway groove outer races, seven raceway groove star sleeves, seven fenestra nonconcentric cages and seven steel balls etc.Seven raceway groove outer races and seven raceway groove star sleeve channel center overlap, and raceway groove element line is that straight line and circular arc are combined, seven raceway groove outer race inner ball surface coordinate with seven fenestra nonconcentric cage outer spherical surfaces, seven raceway groove star sleeve outer spherical surfaces coordinate with seven fenestra retainer inner ball surface, two sphere centre are apart from fenestra center equal and opposite in direction, direction is contrary, and the fixed end of seven raceway groove star sleeves and transmission shaft passes through spline coupling.
3. bias four ball pin according to claims 1 and homocentric sphere cage combined type constant velocity cardan joint transmission shaft assembly, is characterized in that: bias four ball-pin type constant velocity universal joint of telescopic end, is made up of four post pot shells and four ball pin bearings etc.Four ball pin bearings are made up of four pin frame, four eccentric balls and some needle rollers etc., four eccentric balls coordinate with four post pot shells, four equally distributed channel gap respectively, the compound motion rolling and slide, four pin framves are connect by involute inner spline and transmission shaft involute outer spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057914.1A CN104863977A (en) | 2014-02-20 | 2014-02-20 | Eccentric four ball pin and concentric ball cage combined constant velocity universal joint transmission shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057914.1A CN104863977A (en) | 2014-02-20 | 2014-02-20 | Eccentric four ball pin and concentric ball cage combined constant velocity universal joint transmission shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104863977A true CN104863977A (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410057914.1A Pending CN104863977A (en) | 2014-02-20 | 2014-02-20 | Eccentric four ball pin and concentric ball cage combined constant velocity universal joint transmission shaft assembly |
Country Status (1)
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| CN (1) | CN104863977A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201090623Y (en) * | 2007-09-11 | 2008-07-23 | 石宝枢 | Four ball-pin type constant velocity universal joint |
| WO2008114606A1 (en) * | 2007-03-20 | 2008-09-25 | Ntn Corporation | Shaft disengagement prevention structure for constant velocity universal joint, constant velocity universal joint, and method of manufacturing the constant velocity universal joint |
| CN201461763U (en) * | 2009-07-28 | 2010-05-12 | 石宝枢 | Universal joint transmission shaft assembly with combination of ball cage and four-ball pin |
| CN101966812A (en) * | 2009-07-28 | 2011-02-09 | 石宝枢 | Ball cage and four-ball-pin combined type universal joint transmission shaft assembly |
| CN103470646A (en) * | 2012-06-05 | 2013-12-25 | 浙江众达传动股份有限公司 | Eccentric crossed-groove ball cage type constant-velocity universal joint |
-
2014
- 2014-02-20 CN CN201410057914.1A patent/CN104863977A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008114606A1 (en) * | 2007-03-20 | 2008-09-25 | Ntn Corporation | Shaft disengagement prevention structure for constant velocity universal joint, constant velocity universal joint, and method of manufacturing the constant velocity universal joint |
| CN201090623Y (en) * | 2007-09-11 | 2008-07-23 | 石宝枢 | Four ball-pin type constant velocity universal joint |
| CN201461763U (en) * | 2009-07-28 | 2010-05-12 | 石宝枢 | Universal joint transmission shaft assembly with combination of ball cage and four-ball pin |
| CN101966812A (en) * | 2009-07-28 | 2011-02-09 | 石宝枢 | Ball cage and four-ball-pin combined type universal joint transmission shaft assembly |
| CN103470646A (en) * | 2012-06-05 | 2013-12-25 | 浙江众达传动股份有限公司 | Eccentric crossed-groove ball cage type constant-velocity universal joint |
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Application publication date: 20150826 |
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| WD01 | Invention patent application deemed withdrawn after publication |