CN105485295A - Internal gear driven automobile differential provided with biphase outer cam and rolling needle roller blocks - Google Patents
Internal gear driven automobile differential provided with biphase outer cam and rolling needle roller blocks Download PDFInfo
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- CN105485295A CN105485295A CN201610044099.4A CN201610044099A CN105485295A CN 105485295 A CN105485295 A CN 105485295A CN 201610044099 A CN201610044099 A CN 201610044099A CN 105485295 A CN105485295 A CN 105485295A
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- external tooth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/12—Differential gearings without gears having orbital motion
- F16H48/14—Differential gearings without gears having orbital motion with cams
- F16H48/147—Differential gearings without gears having orbital motion with cams with driven cam followers or balls engaging two opposite cams
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Abstract
The invention discloses an internal gear driven automobile differential provided with a biphase outer cam and rolling needle roller blocks, belongs to the technical field of mechanical transmission and provides a novel automobile differential. According to the automobile differential, a straight tooth bevel gear is arranged outside an external tooth inner center wheel, an internal gear is arranged in the external tooth inner center wheel, and the rolling needle roller blocks are in multi-tooth meshing with the external tooth inner center wheel, a left half shaft frame and a right half shaft biphase outer cam and are in pure rolling friction connection; power is input through the bevel gear outside the external tooth inner center wheel and transmitted to the rolling needle roller blocks through the internal gear of the external tooth inner center wheel, and the rolling needle roller blocks transmit the power to the left half shaft frame connected with a left wheel and the right half shaft biphase outer cam connected with a right wheel, so that the differential speed of the left wheel and the right wheel is realized. According to the automobile differential, a planetary gear system in a conventional automobile differential is omitted, the structure is compact, the size is small, the weight is light, multi-tooth meshing is adopted, the contact ratio is large, the bearing capability is high, the transmission efficiency is high, and the automobile differential can be widely applied to various wheeled vehicles, such as automobiles, engineering vehicles and the like, requiring differentials.
Description
Technical field
The present invention relates to a kind of internal gear drives two-phase external cam needle roller to roll Subblock-wise automobile differential, for the differential of wheeled vehicle, belongs to technical field of mechanical transmission.
Background technique
Automobile differential conventional at present all adopts the epicyclic gear system be made up of multiple spur bevel gear to realize the object of differential, although this system can realize the function of automobile left and right half differential, but this component of a system is more, axis and radial dimension are all large, volume is large, heavier-weight, particularly for heavy-duty car, in order to can realize differential and transmit enough power, then volume and weight can increase further; It is low that spur bevel gear transmission also has contact ratio, therefore bearing capacity is low, and transmission efficiency is not high, spur bevel gear processing difficulties, the shortcomings such as manufacturability is poor.
Summary of the invention
The object of the invention is: for overcoming the above-mentioned shortcoming that existing automobile differential exists, the invention provides a kind of simple and compact for structure, axis and radial dimension is little, lightweight, contact ratio is high, bearing capacity is large, transmission efficiency is high that novel automobile differential---internal gear drives two-phase external cam needle roller to roll Subblock-wise automobile differential.
The technological scheme that the present invention takes for its technical problem of solution is: a kind of internal gear drives two-phase external cam needle roller to roll Subblock-wise automobile differential, primarily of central gear in external tooth (1), left half axle frame (2), tapered roller bearing (3), right half shell (4), needle roller roller block (5), right axle shaft two-phase external cam (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), sleeve pad (12), deep groove ball bearing (13) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth central gear---needle roller roller block---two-phase external cam " system, this system mainly comprises central gear in external tooth (1), left half axle frame (2), needle roller roller block (5), right axle shaft two-phase external cam (6), differential is realized with this system, form differential mechanism, in external tooth, the outside of central gear (1) is spur bevel gear, inside is the internal gear with multiple projection, and the number of its projection is called and the number of teeth of central gear in external tooth (1) is designated as Z
1therefore central gear (1) is a bevel gear of main reducing gear in external tooth, it is again a component in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by central gear (1), and in external tooth, central gear (1) and right half shell (4) are fixedly connected into an entirety by screw (8) and are supported in frame by a pair tapered roller bearing (3), the left end of left half axle frame (2) is left half axle, left half axle frame (2) is connected by left half axle and left side rear wheel (14), the right-hand member of left half axle frame (2) is tube-in-tube structure, this tube-in-tube structure is loaded in the internal gear of central gear in external tooth (1), has Z along this tube-in-tube structure circumference
2individual radial guide groove, this guide groove is built with needle roller roller block (5), and left half axle frame (2) is supported in central gear in external tooth (1) by a pair deep groove ball bearing (13), above-mentioned needle roller roller block (5) is made up of backbone block (16), pin (17), needle roller (18), needle roller sleeve (19), be drive fit between the two ends of pin (17) and the hole of backbone block (16) both sides, the needle roller sleeve (19) being arranged on backbone block (16) two ends is supported by pin (17) and passes through needle roller (18) and forms rolling connecting relation with backbone block (16), the radial guide groove inwall of the tube-in-tube structure of left half axle frame (2) radially has the groove filling needle roller (10), at this groove built with some needle rollers (10), can move radially in this guide groove in the radial guide groove that needle roller roller block (5) is contained in the tube-in-tube structure of left half axle frame (2), the backbone block (16) of needle roller roller block (5) forms rolling connecting relation by the some needle rollers (10) in guide groove and the radial guide groove of left half axle frame (2), namely needle roller (10) makes the contact between needle roller roller block (5) and left half axle frame (2) become rolling friction from sliding friction, in external tooth, the internal gear tooth curve of central gear (1) is that needle roller roller block (5) rotates with left half axle frame (2) on the one hand, in the process of on the other hand movement in the radial guide groove of left half axle frame (2) again, the envelope of a series of position residing for its outer end needle roller sleeve (19), right axle shaft two-phase external cam (6) is two-phase external cam, this two-phase external cam own form is 180 degree of Central Symmetries, sole mass complete equilibrium, its profilogram is standard ellipse curve, or be two-phase cosine curve, or be two eccentric arc curves, right axle shaft two-phase external cam (6) is embedded in the tube-in-tube structure of left half axle frame (2), the right-hand member of right axle shaft two-phase external cam (6) is right axle shaft, right axle shaft two-phase external cam (6) is linked togather mutually by right axle shaft and the right rear wheel (15), the left end of right axle shaft two-phase external cam (6) is supported within left half axle frame (2) by deep groove ball bearing (9), right-hand member is supported within right half shell (4) by deep groove ball bearing (7), the needle roller sleeve (19) at the two ends of needle roller roller block (5) is meshed with the internal gear tooth of central gear in external tooth (1) and the external cam profile of right axle shaft two-phase external cam (6) each composition pure rolling higher pair respectively, the tooth number Z of central gear (1) in external tooth
1with the number Z of needle roller roller block (5)
2difference be 2.
Other NM place of differential mechanism of the present invention, as left half axle frame (2), connecting etc. of right axle shaft two-phase external cam (6) and wheel of vehicle all adopt prior art.
Compared with the prior art primary object of the present invention is:
1. the present invention replaces the epicyclic gear system of orthodox car differential mechanism by " in external tooth central gear---needle roller roller block---two-phase external cam " system, this system mainly comprises central gear in external tooth, left half axle frame, needle roller roller block, right axle shaft two-phase external cam, realize differential with this system, form differential mechanism.
2. in external tooth, the outside of central gear is spur bevel gear, inside is the internal gear with multiple projection, the number of its projection is called the number of teeth of central gear in external tooth, therefore central gear is a bevel gear of main reducing gear in external tooth, it is again a component in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by central gear, and in external tooth, central gear and right half shell are fixedly connected into an entirety by screw and are supported in frame by a pair tapered roller bearing, the left end of left half axle frame is left half axle, and left half axle frame is connected by left half axle and left side rear wheel, and the right-hand member of left half axle frame is tube-in-tube structure, and this tube-in-tube structure is loaded in the internal gear of central gear in external tooth, has Z along this tube-in-tube structure circumference
2individual radial guide groove, this guide groove is built with needle roller roller block, and left half axle frame to be supported in external tooth in central gear by a pair deep groove ball bearing, above-mentioned needle roller roller block is made up of backbone block, pin, needle roller, needle roller sleeve, is drive fit between the two ends of pin and the hole of backbone block both sides, and the needle roller sleeve being arranged on backbone block two ends is supported by pin and forms rolling connecting relation by needle roller and backbone block, the radial guide groove inwall of the tube-in-tube structure of left half axle frame radially has the groove filling needle roller, at this groove built with some needle rollers, also can move radially in this guide groove in the radial guide groove of the packaged tube-in-tube structure at left half axle frame of needle roller roller, the backbone block of needle roller roller block forms rolling connecting relation by the radial guide groove of some needle rollers in guide groove and left half axle frame, and the needle roller namely in guide groove makes the contact between needle roller roller block and left half axle frame become rolling friction from sliding friction, in external tooth, the internal gear tooth curve of central gear is that needle roller roller block rotates with left half axle frame on the one hand, in the process of movement in the radial guide groove of left half axle frame again on the other hand, and the envelope of a series of position residing for its outer end needle roller sleeve, right axle shaft two-phase external cam is two-phase external cam, this two-phase external cam own form is 180 degree of Central Symmetries, sole mass complete equilibrium, its profilogram is standard ellipse curve, or be two-phase cosine curve, or be two eccentric arc curves, right axle shaft two-phase external cam is embedded in the tube-in-tube structure of left half axle frame, the right-hand member of right axle shaft two-phase external cam is right axle shaft, right axle shaft two-phase external cam is linked togather mutually by right axle shaft and the right rear wheel, the left end of right axle shaft two-phase external cam is supported within left half axle frame by deep groove ball bearing, right-hand member is supported within right half shell by deep groove ball bearing, the needle roller sleeve at the two ends of needle roller roller block is meshed with the internal gear tooth of central gear in external tooth and the external cam profile of right axle shaft two-phase external cam each composition pure rolling higher pair respectively, the tooth number Z of central gear in external tooth
1with the number Z of needle roller roller block
2difference be 2.
3. driving force passes in external tooth and passes to left half axle frame and right axle shaft two-phase external cam through needle roller roller block after central gear, thus pass to left and right rear wheel, and needle roller roller block be pure rolling friction between central gear, right axle shaft two-phase external cam in left half axle frame, external tooth and connect, therefore the transmission efficiency of differential mechanism of the present invention is high.
4. needle roller roller block is multiple tooth engagement with in external tooth between central gear, left half axle frame and right axle shaft two-phase external cam, therefore contact ratio is large, and bearing capacity is large, can realize high-power, high pulling torque differential drive.
5. the own form of right axle shaft two-phase external cam is 180 ° of Central Symmetries, and sole mass complete equilibrium, also balances by external force, therefore the stressed autobalance of differential mechanism.
The present invention, compared with existing conventional automobile differential, has following useful technique effect:
1. compact structure, axially and radial dimension little, volume is little, and weight is lighter
The present invention adopts " in external tooth central gear---needle roller roller block---two-phase external cam " system to replace the epicyclic gear system of orthodox car differential mechanism, the axis of transmission device and radial dimension are all less, thus the compact structure of differential mechanism of the present invention, volume are little, lightweight.
2. contact ratio is large, and bearing capacity is high
Realize multipair tooth between the internal gear tooth of central gear and left half axle frame in the external cam profile of needle roller roller block and right axle shaft two-phase external cam, external tooth in the present invention to engage simultaneously, the needle roller roller block of 50% can be had at most to participate in joggleword simultaneously, contact ratio is high, bearing capacity is high, can realize high-power, high pulling torque differential drive.
3. transmission efficiency is high
Needle roller roller block be pure rolling friction between central gear, right axle shaft two-phase external cam in left half axle frame, external tooth and connect, therefore the transmission efficiency of differential mechanism of the present invention is high.
4. good manufacturability, cost of production are low
Part in differential mechanism of the present invention mostly is circular, simple shape, easilier than the bevel gear in epicyclic gear system processes, and good manufacturability, cost of production is low.
5. stress equalization, smooth running
The own form of right axle shaft two-phase external cam is 180 ° of Central Symmetries, and sole mass complete equilibrium, also balances by external force, thus the stressed autobalance of differential mechanism, smooth running.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.But want it is emphasized that; the specific embodiment of the present invention is not limited to the form below described by embodiment; those skilled in the art is not when paying creative work; also can design other embodiment easily; therefore the embodiment of embodiment given below should be interpreted as protection scope of the present invention, protection scope of the present invention is limited in given embodiment.
Fig. 1 is that internal gear drives two-phase external cam needle roller to roll the structural representation of Subblock-wise automobile differential;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4 is the structural representation of central gear in external tooth;
Fig. 5 is the structural representation of right axle shaft two-phase external cam;
Fig. 6 is the structural representation of left half axle frame;
Fig. 7 is the assembling schematic diagram of needle roller roller block;
Fig. 8 is the structural representation of backbone block;
Fig. 9 is that internal gear drives two-phase external cam needle roller to roll the differential gearing schematic diagram of Subblock-wise automobile differential;
The relative position relation schematic diagram of each wheel and differential mechanism when Figure 10 is automobile left-hand bend.
The identification of object that above-mentioned each attached picture in picture knows label is: central gear in 1 external tooth; 2 left half axle framves; 3 tapered roller bearings; 4 right half shells; 5 needle roller roller blocks; 6 right axle shaft two-phase external cam; 7 deep groove ball bearings; 8 screws; 9 deep groove ball bearings; 10 needle rollers; The active spur bevel gear of 11 main reducing gears; 12 sleeve pads; 13 deep groove ball bearings; 14 left side rear wheels; Rear wheel on the right of in the of 15; 16 backbone block; 17 pins; 18 needle rollers; 19 needle roller sleeves.
Embodiment
Internal gear shown in Fig. 1 to Fig. 8 drives two-phase external cam needle roller to roll Subblock-wise automobile differential, primarily of central gear in external tooth (1), left half axle frame (2), tapered roller bearing (3), right half shell (4), needle roller roller block (5), right axle shaft two-phase external cam (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), sleeve pad (12), deep groove ball bearing (13) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth central gear---needle roller roller block---two-phase external cam " system, this system mainly comprises central gear in external tooth (1), left half axle frame (2), needle roller roller block (5), right axle shaft two-phase external cam (6), differential is realized with this system, form differential mechanism, in external tooth, the outside of central gear (1) is spur bevel gear, inside is the internal gear with multiple projection, and the number of its projection is called and the number of teeth of central gear in external tooth (1) is designated as Z
1therefore central gear (1) is a bevel gear of main reducing gear in external tooth, it is again a component in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by central gear (1), and in external tooth, central gear (1) and right half shell (4) are fixedly connected into an entirety by screw (8) and are supported in frame by a pair tapered roller bearing (3), the left end of left half axle frame (2) is left half axle, left half axle frame (2) is connected by left half axle and left side rear wheel (14), the right-hand member of left half axle frame (2) is tube-in-tube structure, this tube-in-tube structure is loaded in the internal gear of central gear in external tooth (1), has Z along this tube-in-tube structure circumference
2individual radial guide groove, this guide groove is built with needle roller roller block (5), and left half axle frame (2) is supported in central gear in external tooth (1) by a pair deep groove ball bearing (13), above-mentioned needle roller roller block (5) is made up of backbone block (16), pin (17), needle roller (18), needle roller sleeve (19), be drive fit between the two ends of pin (17) and the hole of backbone block (16) both sides, the needle roller sleeve (19) being arranged on backbone block (16) two ends is supported by pin (17) and passes through needle roller (18) and forms rolling connecting relation with backbone block (16), the radial guide groove inwall of the tube-in-tube structure of left half axle frame (2) radially has the groove filling needle roller (10), at this groove built with some needle rollers (10), can move radially in this guide groove in the radial guide groove that needle roller roller block (5) is contained in the tube-in-tube structure of left half axle frame (2), the backbone block (16) of needle roller roller block (5) forms rolling connecting relation by the some needle rollers (10) in guide groove and the radial guide groove of left half axle frame (2), namely needle roller (10) makes the contact between needle roller roller block (5) and left half axle frame (2) become rolling friction from sliding friction, in external tooth, the internal gear tooth curve of central gear (1) is that needle roller roller block (5) rotates with left half axle frame (2) on the one hand, in the process of on the other hand movement in the radial guide groove of left half axle frame (2) again, the envelope of a series of position residing for its outer end needle roller sleeve (19), right axle shaft two-phase external cam (6) is two-phase external cam, this two-phase external cam own form is 180 degree of Central Symmetries, sole mass complete equilibrium, its profilogram is standard ellipse curve, right axle shaft two-phase external cam (6) is embedded in the tube-in-tube structure of left half axle frame (2), the right-hand member of right axle shaft two-phase external cam (6) is right axle shaft, right axle shaft two-phase external cam (6) is linked togather mutually by right axle shaft and the right rear wheel (15), the left end of right axle shaft two-phase external cam (6) is supported within left half axle frame (2) by deep groove ball bearing (9), right-hand member is supported within right half shell (4) by deep groove ball bearing (7), the needle roller sleeve (19) at the two ends of needle roller roller block (5) is meshed with the internal gear tooth of central gear in external tooth (1) and the external cam profile of right axle shaft two-phase external cam (6) each composition pure rolling higher pair respectively, the tooth number Z of central gear (1) in external tooth
1with the number Z of needle roller roller block (5)
2difference be 2.
The working principle of differential mechanism of the present invention is: when in the driven wheel of differential and external tooth of main reducing gear, central gear (1) is driven and rotates with constant angular velocity, because the internal gear of central gear in external tooth (1) produces thrust to needle roller roller block (5), force needle roller roller block (5) to move in the radial guide groove of left half axle frame (2) and promote left half axle frame (2) and rotate, meanwhile contacted with the higher pair of right axle shaft two-phase external cam (6) by needle roller roller block (5) and also promote right axle shaft two-phase external cam (6) and rotate, thus form a two degrees of freedom differential system, motion in left half axle frame (2) and right axle shaft two-phase external cam (6) and power then pass to the left side be connected with it respectively, right rear wheel.Right axle shaft two-phase external cam (6) and left half axle frame (2) rotate respectively under the effect of driving force, but respective motion state is uncertain, are determined by the different road surface of left and right rear wheel, bend situation.When automobile straight-line travelling on straight road, when wheel in wheel on left half axle frame (2) and right axle shaft two-phase external cam (6) is without speed discrepancy, left half axle frame (2) is identical with the rotating speed of right axle shaft two-phase external cam (6), and namely differential mechanism does not have differential action.Now, in differential mechanism, each parts keep geo-stationary, and torque is inputted by central gear in external tooth (1), on average passes to left half axle frame (2) and right axle shaft two-phase external cam (6) through needle roller roller block (5).Travel when automobile turning or on rough road, when there is speed discrepancy in left and right two-wheeled below, needle roller roller block (5) ordering about by central gear in external tooth (1), left half axle frame (2) and right axle shaft two-phase external cam (6) is driven to rotate on the one hand, radially moving in the radial guide groove of left half axle frame (2) while rotating with left half axle frame (2) on the other hand, ensureing that left half axle frame (2) and right axle shaft two-phase external cam (6) are able to realize differential when not departing from transmission.And because needle roller roller block (5) is to the effect of the moment that the active force of left half axle frame (2) and right axle shaft two-phase external cam (6) produces, the driving wheel making rotating speed slow can obtain the torque that the fast driving wheel of specific speed is larger.
For the differential property of differential mechanism of the present invention is described, if left and right wheel speed is respectively n after automobile
2, n
6, in external tooth, the rotating speed of central gear (1) is n
1, then can be obtained by Fig. 9:
In formula, Z
1the number of teeth of central gear (1) in-external tooth; Z
2the number of-needle roller roller block (5).
As established automobile to turn left, two front-wheels of automobile are under the effect of steering equipment (Figure 10), and the axis of its axis and automobile two trailing wheel intersects at P point, now can be considered that whole automobile turns round around P point.When wheel and ground non-slip, the rotating speed of two trailing wheels should be directly proportional to turning radius, can be obtained by Figure 10:
In formula, r-bend mean radius; L-rear tread partly.
Simultaneous solution formula (1), formula (2):
Under the vehicle parameter determined and driving conditions, n
1, Z
1, Z
2, L is known.Therefore, n
2with n
6only become with radius of turn r.Therefore differential mechanism of the present invention possesses differential function, the vehicle equipping this differential mechanism can by any half curve.
The present invention can be widely used in all wheeled vehicles needing differential mechanism, as automobile, engineering vehicle etc.
Claims (3)
1. internal gear drives two-phase external cam needle roller to roll Subblock-wise automobile differential, primarily of central gear in external tooth (1), left half axle frame (2), tapered roller bearing (3), right half shell (4), needle roller roller block (5), right axle shaft two-phase external cam (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), sleeve pad (12), deep groove ball bearing (13) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth central gear---needle roller roller block---two-phase external cam " system, this system mainly comprises central gear in external tooth (1), left half axle frame (2), needle roller roller block (5), right axle shaft two-phase external cam (6), differential is realized with this system, form differential mechanism, in external tooth, the outside of central gear (1) is spur bevel gear, inside is the internal gear with multiple projection, and the number of its projection is called and the number of teeth of central gear in external tooth (1) is designated as Z
1therefore central gear (1) is a bevel gear of main reducing gear in external tooth, it is again a component in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by central gear (1), and in external tooth, central gear (1) and right half shell (4) are fixedly connected into an entirety by screw (8) and are supported in frame by a pair tapered roller bearing (3), the left end of left half axle frame (2) is left half axle, left half axle frame (2) is connected by left half axle and left side rear wheel (14), the right-hand member of left half axle frame (2) is tube-in-tube structure, this tube-in-tube structure is loaded in the internal gear of central gear in external tooth (1), has Z along this tube-in-tube structure circumference
2individual radial guide groove, this guide groove is built with needle roller roller block (5), and left half axle frame (2) is supported in central gear in external tooth (1) by a pair deep groove ball bearing (13), above-mentioned needle roller roller block (5) is made up of backbone block (16), pin (17), needle roller (18), needle roller sleeve (19), be drive fit between the two ends of pin (17) and the hole of backbone block (16) both sides, the needle roller sleeve (19) being arranged on backbone block (16) two ends is supported by pin (17) and passes through needle roller (18) and forms rolling connecting relation with backbone block (16), the radial guide groove inwall of the tube-in-tube structure of left half axle frame (2) radially has the groove filling needle roller (10), at this groove built with some needle rollers (10), can move radially in this guide groove in the radial guide groove that needle roller roller block (5) is contained in the tube-in-tube structure of left half axle frame (2), the backbone block (16) of needle roller roller block (5) forms rolling connecting relation by the some needle rollers (10) in guide groove and the radial guide groove of left half axle frame (2), namely needle roller (10) makes the contact between needle roller roller block (5) and left half axle frame (2) become rolling friction from sliding friction, in external tooth, the internal gear tooth curve of central gear (1) is that needle roller roller block (5) rotates with left half axle frame (2) on the one hand, in the process of on the other hand movement in the radial guide groove of left half axle frame (2) again, the envelope of a series of position residing for its outer end needle roller sleeve (19), right axle shaft two-phase external cam (6) is two-phase external cam, this two-phase external cam own form is 180 degree of Central Symmetries, sole mass complete equilibrium, its profilogram is standard ellipse curve, or be two-phase cosine curve, or be two eccentric arc curves, right axle shaft two-phase external cam (6) is embedded in the tube-in-tube structure of left half axle frame (2), the right-hand member of right axle shaft two-phase external cam (6) is right axle shaft, right axle shaft two-phase external cam (6) is linked togather mutually by right axle shaft and the right rear wheel (15), the left end of right axle shaft two-phase external cam (6) is supported within left half axle frame (2) by deep groove ball bearing (9), right-hand member is supported within right half shell (4) by deep groove ball bearing (7), the needle roller sleeve (19) at the two ends of needle roller roller block (5) is meshed with the internal gear tooth of central gear in external tooth (1) and the external cam profile of right axle shaft two-phase external cam (6) each composition pure rolling higher pair respectively, the tooth number Z of central gear (1) in external tooth
1with the number Z of needle roller roller block (5)
2difference be 2.
2. internal gear according to claim 1 drives two-phase external cam needle roller to roll Subblock-wise automobile differential, it is characterized in that: realize multipair tooth between the internal gear tooth of central gear and left half axle frame in the external cam profile of needle roller roller block and right axle shaft two-phase external cam, external tooth simultaneously and engage, the needle roller roller block of 50% can be had at most to participate in joggleword simultaneously, therefore contact ratio is high, bearing capacity is high, can realize high-power, high pulling torque differential drive.
3. internal gear according to claim 1 drives two-phase external cam needle roller to roll Subblock-wise automobile differential, it is characterized in that: needle roller roller block be pure rolling friction between central gear, right axle shaft two-phase external cam in left half axle frame, external tooth and connect, therefore the transmission efficiency of differential mechanism of the present invention is high.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044099.4A CN105485295A (en) | 2016-01-22 | 2016-01-22 | Internal gear driven automobile differential provided with biphase outer cam and rolling needle roller blocks |
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|---|---|---|---|
| CN201610044099.4A CN105485295A (en) | 2016-01-22 | 2016-01-22 | Internal gear driven automobile differential provided with biphase outer cam and rolling needle roller blocks |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594227A (en) * | 2017-02-24 | 2017-04-26 | 四川大学 | Two-tooth-difference wobble plate end gear driven automobile differential |
| CN113665725A (en) * | 2021-09-22 | 2021-11-19 | 浙江创台车业有限公司 | Two-wheel hybrid power motorcycle and one-way transmission mechanism |
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| CN105257802A (en) * | 2015-11-04 | 2016-01-20 | 四川大学 | Internal gear driven type pure rolling automobile differential mechanism with random tooth difference |
| CN105257801A (en) * | 2015-11-04 | 2016-01-20 | 四川大学 | Pure rolling type automobile differential mechanism |
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| WO2011127229A2 (en) * | 2010-04-07 | 2011-10-13 | Synkinetics, Inc. | Differential |
| CN105257802A (en) * | 2015-11-04 | 2016-01-20 | 四川大学 | Internal gear driven type pure rolling automobile differential mechanism with random tooth difference |
| CN105257801A (en) * | 2015-11-04 | 2016-01-20 | 四川大学 | Pure rolling type automobile differential mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594227A (en) * | 2017-02-24 | 2017-04-26 | 四川大学 | Two-tooth-difference wobble plate end gear driven automobile differential |
| CN113665725A (en) * | 2021-09-22 | 2021-11-19 | 浙江创台车业有限公司 | Two-wheel hybrid power motorcycle and one-way transmission mechanism |
| CN113665725B (en) * | 2021-09-22 | 2023-01-10 | 浙江创台车业有限公司 | Two-wheel hybrid power motorcycle and one-way transmission mechanism |
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