CN205423738U - Tooth -like automotive differential of internal gear driven pendulum - Google Patents
Tooth -like automotive differential of internal gear driven pendulum Download PDFInfo
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- CN205423738U CN205423738U CN201620202651.3U CN201620202651U CN205423738U CN 205423738 U CN205423738 U CN 205423738U CN 201620202651 U CN201620202651 U CN 201620202651U CN 205423738 U CN205423738 U CN 205423738U
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Abstract
Tooth -like automotive differential of internal gear driven pendulum belongs to mechanical transmission technical field. The utility model provides a novel automotive differential, to be straight -tooth conical gear, inside be the internal gear in the outside of centre wheel in its external tooth, power outside bevel gear input of centre wheel in by the external tooth, the swing oscillating tooth is passed to to the internal gear of centre wheel in the external tooth, and left half axle frame that connects firmly with left wheel and the double -phase outer cam of right semi -axis that connects firmly with right wheel are passed to with power again to the swing oscillating tooth to make left and right wheel realize the differential. This automotive differential has saved the epicyclie gear interconnected system among traditional automotive differential, and the structure is compacter, and is small, light in weight, and multiple tooth meshing, the contact ratio and overlap ratio is big, and bearing capacity is strong, high transmission efficiency, but wide application in the various wheeled vehicle that need differential mechanism, car as, engineering vehicle etc.
Description
Technical field
The present invention relates to the tooth-like automobile differential of pendulum that a kind of internal gear drives, for the differential of wheeled vehicle, belong to technical field of mechanical transmission.
Background technology
The most conventional automobile differential all uses the planetary gear system being made up of multiple spur bevel gears to realize the purpose of differential, although this system is capable of the function of automobile left and right half differential, but this component of a system is more, axially and radially size is all big, volume is big, heavier-weight, for heavy-duty car, in order to be able to realize differential and transmit enough power, then volume and weight can increase further；It is low that spur bevel gear transmission also has registration, therefore bearing capacity is low, and transmission efficiency is the highest, spur bevel gear processing difficulties, the shortcomings such as manufacturability is poor.
Summary of the invention
It is an object of the invention to: for the disadvantages mentioned above overcoming existing automobile differential to exist, the present invention provides the tooth-like automobile differential of pendulum that a kind of Novel differential gear internal gear simple and compact for structure, that axially and radially size is little, lightweight, registration is high, bearing capacity is big, transmission efficiency is high drives.
The present invention solves that its technical problem is adopted the technical scheme that: the tooth-like automobile differential of pendulum that a kind of internal gear drives, main by centre wheel in external tooth (1), left half axle frame (2), taper roll bearing (3), right half-shell (4), swing movable gear (5), the biphase external cam of right axle shaft (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), oscillating tooth pin (11), deep groove ball bearing (12) forms, it is characterized in that: abandoned the planetary gear system of orthodox car differential mechanism, instead " the biphase external cam of centre wheel swing movable gear in external tooth " system, this system mainly includes centre wheel (1) in external tooth, left half axle frame (2), swing movable gear (5), the biphase external cam of right axle shaft (6), differential is realized with this system, constitute differential mechanism；In external tooth the outside of centre wheel (1) be spur bevel gear, inside be the internal gear with multiple projection, the number of its projection is the number of teeth of centre wheel (1) in external tooth, is designated as Z1Therefore centre wheel (1) is a bevel gear of main reducing gear in external tooth, it it is again the internal gear in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by centre wheel (1), and in external tooth, centre wheel (1) is fixedly connected into an entirety with right half-shell (4) by screw (8) and is supported in frame by a pair taper roll bearing (3)；The left end of left half axle frame (2) is left half axle, the left end of left half axle frame (2) and left side wheel (13) connect firmly mutually, right-hand member is loaded in external tooth in the internal gear of centre wheel (1), the right-hand member of left half axle frame (2) is tube-in-tube structure, has Z along this sleeve circumference2Individual radial direction guide groove, and in its right end face, have Z2Individual axially extending bore.Guide groove is built with swing movable gear (5).Left half axle frame (2) is supported in external tooth in centre wheel (1) by a pair deep groove ball bearing (12)；In external tooth, the internal gear tooth curve of centre wheel (1) is that swing movable gear (5) on the one hand rotates with left half axle frame (2), the most again the envelope of residing a series of positions during oscillating tooth pin (11) eccentric rotary；The left end of the biphase external cam of right axle shaft (6) is biphase external cam, this biphase external cam own form is 180 ° of centrosymmetry, sole mass complete equipilibrium, its contour curve is standard ellipse curve, or be two-phase cosine curve, or be double eccentric arc curves, the biphase external cam of right axle shaft (6) is embedded in the right-hand member of left half axle frame (2), the right-hand member of the biphase external cam of right axle shaft (6) is right axle shaft, together with the biphase external cam of right axle shaft (6) is connected firmly with the right wheel (14) by right axle shaft, within the left end of the biphase external cam of right axle shaft (6) is supported on left half axle frame (2) by deep groove ball bearing (9), within right-hand member is supported on right half-shell (4) by deep groove ball bearing (7)；Above-mentioned swing movable gear (5) is fixed on left half axle frame (2) by oscillating tooth pin (11).Having axially extending bore on left half axle frame (2), oscillating tooth pin (11) is inserted on this through hole through swing movable gear (5), thus is connected with left half axle frame (2) by swing movable gear (5).Swing movable gear (5) forms revolute pair with oscillating tooth pin (11)；The outer cylinder surface of swing movable gear (5) is meshed respectively with the outline of the internal gear tooth of centre wheel in external tooth (1) and the biphase external cam of right axle shaft (6) one sliding pair of each composition；The tooth number Z of centre wheel (1) in external tooth1Tooth number Z with swing movable gear (5)2Difference is 2.
Other NM place of differential mechanism of the present invention, as left half axle frame (2), coupling etc. of the biphase external cam of right axle shaft (6) and wheel of vehicle all use prior art.
Compared with the prior art the primary object of the present invention is:
1. the present invention replaces the planetary gear system of orthodox car differential mechanism by " the biphase external cam of centre wheel swing movable gear in external tooth " system, this system mainly includes centre wheel, left half axle frame, swing movable gear, the biphase external cam of right axle shaft in external tooth, realizes differential with this system.
2. in external tooth, the outside of centre wheel is spur bevel gear, inside is the internal gear with multiple projection, therefore centre wheel is a bevel gear of main reducing gear in external tooth, it it is again the internal gear in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by centre wheel, in external tooth, centre wheel and right half-shell are fixedly connected into an entirety by screw and to be supported on the left end of left half axle frame in frame by a pair taper roll bearing be left half axle, the left end of left half axle frame connects firmly mutually with left side wheel, right-hand member is loaded in external tooth in the internal gear of centre wheel, the right-hand member of left half axle frame is tube-in-tube structure, Z is had along this sleeve circumference2Individual radial direction guide groove, and in its right end face, have Z2Individual axially extending bore.Guide groove is built with swing movable gear.Left half axle frame is supported in external tooth in centre wheel by a pair deep groove ball bearing；In external tooth, the internal gear tooth curve of centre wheel is that on the one hand swing movable gear rotates with left half axle frame, the most again the envelope of residing a series of positions during oscillating tooth pin eccentric rotary；The left end of the biphase external cam of right axle shaft is biphase external cam, this biphase external cam own form is 180 ° of centrosymmetry, sole mass complete equipilibrium, its contour curve is standard ellipse curve, or be two-phase cosine curve, or be double eccentric arc curves, the biphase external cam of right axle shaft is embedded in the right-hand member of left half axle frame, the right-hand member of the biphase external cam of right axle shaft is right axle shaft, together with the biphase external cam of right axle shaft is connected firmly with the right wheel by right axle shaft, within the left end of the biphase external cam of right axle shaft is supported on left half axle frame by deep groove ball bearing, within right-hand member is supported on right half-shell by deep groove ball bearing.
3. swing movable gear is fixed on left half axle frame by oscillating tooth pin.Having axially extending bore on left half axle frame, oscillating tooth pin is inserted on this circular hole through swing movable gear, thus is connected with left half axle frame by swing movable gear.Swing movable gear forms revolute pair with oscillating tooth pin；The outer cylinder surface of swing movable gear is meshed respectively with the internal gear tooth of centre wheel in external tooth and the outline of the biphase external cam of right axle shaft one sliding pair of each composition；
4. swing movable gear be multiple tooth engagement in external tooth between centre wheel, left half axle frame and the biphase external cam of right axle shaft, therefore registration is big, and bearing capacity is big, can realize high-power, high pulling torque differential gearing.
5. the own form of the biphase external cam of right axle shaft is 180 ° of centrosymmetry, and sole mass complete equipilibrium is also balanced by external force, therefore differential mechanism stress autobalance.
The present invention, compared with existing conventional automobile differential, has a following useful technique effect:
1. compact conformation, axially and radially size is little, and volume is little, and weight is lighter
The present invention uses " the biphase external cam of centre wheel swing movable gear in external tooth " system to replace the planetary gear system of conventional carrier, and the axially and radially size of actuating device is the least, thus the compact conformation of differential mechanism of the present invention, volume are less, alleviate weight.
2. registration is big, and bearing capacity is high
In the present invention swing movable gear external cam biphase with right axle shaft outline and in external tooth the internal gear tooth of centre wheel realize multipair tooth simultaneously and engage, the swing movable gear that can have up to 50% simultaneously participates in joggleword, registration is high, and bearing capacity is high, can realize high-power, high pulling torque differential gearing.
3. good manufacturability, production cost are low
Part in differential mechanism of the present invention mostly is circular, and simple shape is easier to processing than the bevel gear in planetary gear system, and good manufacturability, production cost is low.
4. stress equalization, smooth running
The own form of the biphase external cam of right axle shaft is 180 ° of centrosymmetry, and sole mass complete equipilibrium is also balanced by external force, therefore differential mechanism stress autobalance, smooth running.
Accompanying drawing explanation
The invention will be further described with embodiment below in conjunction with the accompanying drawings.But want it is emphasized that; the detailed description of the invention of the present invention is not limited to the form described by example below; those skilled in the art is not in the case of paying creative work; also can design other detailed description of the invention easily; the embodiment of detailed description of the invention 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 the pendulum tooth-like automobile differential structural representation that internal gear drives
Fig. 2 is the A-A sectional view of Fig. 1
Fig. 3 is the structural representation of centre wheel in external tooth
Fig. 4 is left half axle shelf structure schematic diagram
Fig. 5 is the structural representation of swing movable gear
Fig. 6 is the structural representation of the biphase external cam of right axle shaft
Fig. 7 is the differential gearing schematic diagram putting tooth-like automobile differential that internal gear drives
Each wheel and the relative position relation schematic diagram of differential mechanism when Fig. 8 is automobile left-hand bend
In above-mentioned each accompanying drawing, figure knows the mark of label to liking: centre wheel in 1 external tooth；2 left half axle framves；3 taper roll bearings；4 right half-shell；5 swing movable gears；The 6 biphase external cam of right axle shaft；7 deep groove ball bearings；8 screws；9 deep groove ball bearings；The active spur bevel gear of 10 main reducing gears；11 oscillating tooth pins；12 deep groove ball bearings；13 left wheels；14 right wheels；15 sleeve pads.
Specific embodiment
The tooth-like automobile differential of pendulum that internal gear shown in Fig. 1 to Fig. 6 drives, main by centre wheel in external tooth (1), left half axle frame (2), taper roll bearing (3), right half-shell (4), swing movable gear (5), the biphase external cam of right axle shaft (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), oscillating tooth pin (11), deep groove ball bearing (12) forms, it is characterized in that: abandoned the planetary gear system of orthodox car differential mechanism, instead " the biphase external cam of centre wheel swing movable gear in external tooth " system, this system mainly includes centre wheel (1) in external tooth, left half axle frame (2), swing movable gear (5), the biphase external cam of right axle shaft (6), differential is realized with this system, constitute differential mechanism；In external tooth the outside of centre wheel (1) be spur bevel gear, inside be the internal gear with multiple projection, the number of its projection is the number of teeth of centre wheel (1) in external tooth, is designated as Z1Therefore centre wheel (1) is a bevel gear of main reducing gear in external tooth, it it is again the internal gear in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by centre wheel (1), and in external tooth, centre wheel (1) is fixedly connected into an entirety with right half-shell (4) by screw (8) and is supported in frame by a pair taper roll bearing (3)；The left end of left half axle frame (2) is left half axle, the left end of left half axle frame (2) and left side wheel (13) connect firmly mutually, right-hand member is loaded in external tooth in the internal gear of centre wheel (1), the right-hand member of left half axle frame (2) is tube-in-tube structure, has Z along this sleeve circumference2Individual radial direction guide groove, and in its right end face, have Z2Individual axially extending bore.Guide groove is built with swing movable gear (5).Left half axle frame (2) is supported in external tooth in centre wheel (1) by a pair deep groove ball bearing (12)；In external tooth, the internal gear tooth curve of centre wheel (1) is that swing movable gear (5) on the one hand rotates with left half axle frame (2), the most again the envelope of residing a series of positions during oscillating tooth pin (11) eccentric rotary；The left end of the biphase external cam of right axle shaft (6) is biphase external cam, this biphase external cam own form is 180 ° of centrosymmetry, sole mass complete equipilibrium, its contour curve is standard ellipse curve, or be two-phase cosine curve, or be double eccentric arc curves, the biphase external cam of right axle shaft (6) is embedded in the right-hand member of left half axle frame (2), the right-hand member of the biphase external cam of right axle shaft (6) is right axle shaft, together with the biphase external cam of right axle shaft (6) is connected firmly with the right wheel (14) by right axle shaft, within the left end of the biphase external cam of right axle shaft (6) is supported on left half axle frame (2) by deep groove ball bearing (9), within right-hand member is supported on right half-shell (4) by deep groove ball bearing (7)；Above-mentioned swing movable gear (5) is fixed on left half axle frame (2) by oscillating tooth pin (11).Having axially extending bore on left half axle frame (2), oscillating tooth pin (11) is inserted on this through hole through swing movable gear (5), thus is connected with left half axle frame (2) by swing movable gear (5).Swing movable gear (5) forms revolute pair with oscillating tooth pin (11)；The outer cylinder surface of swing movable gear (5) is meshed respectively with the outline of the internal gear tooth of centre wheel in external tooth (1) and the biphase external cam of right axle shaft (6) one sliding pair of each composition；The tooth number Z of centre wheel (1) in external tooth1Tooth number Z with swing movable gear (5)2Difference is 2.
The operation principle of differential mechanism of the present invention is: when in the driven wheel of differential i.e. external tooth of main reducing gear, centre wheel (1) is driven and rotates with constant angular velocity, owing in external tooth, the internal gear of centre wheel (1) produces thrust to swing movable gear (5), force swing movable gear (5) to rotate around oscillating tooth pin (11) and promote left half axle frame (2) to rotate, meanwhile being contacted by the higher pair of swing movable gear (5) external cam biphase with right axle shaft (6) also promotes the biphase external cam of right axle shaft (6) to rotate, thus constitute a two degrees of freedom differential system, the left side connected firmly mutually with it is passed in motion on left half axle frame (2) external cam biphase with right axle shaft (6) the most respectively with power, right wheel.The biphase external cam of right axle shaft (6) and left half axle frame (2) rotate under the effect of driving force respectively, but respective kinestate is uncertain, the different road surface of left and right wheels, bend situation determine.When automobile straight-line travelling on straight road, when wheel on left half axle frame (2) and the wheel on the biphase external cam of right axle shaft (6) are without speed discrepancy, the rotating speed of left half axle frame (2) external cam biphase with right axle shaft (6) is identical, i.e. differential mechanism does not has differential action.Now, in differential mechanism, each parts keep geo-stationary, and torque is inputted by centre wheel in external tooth (1), averagely passes to left half axle frame (2) and the biphase external cam of right axle shaft (6) through swing movable gear (5).Travel when automobile turning or on rough road, when there is speed discrepancy in left and right two-wheeled below, swing movable gear (5) is ordered about by centre wheel in external tooth (1), on the one hand left half axle frame (2) and the biphase external cam of right axle shaft (6) is driven to rotate, on the other hand rotate around the oscillating tooth pin (11) being inserted on left half axle frame (2) right-hand member while rotating with left half axle frame (2), it is ensured that left half axle frame (2) and the biphase external cam of right axle shaft (6) are able in the case of without departing from transmission realize differential.And due to the swing movable gear (5) effect to the moment that the active force of left half axle frame (2) and the biphase external cam of right axle shaft (6) produces, make to obtain, on the slow driving wheel of rotating speed, the torque that the fast driving wheel of specific speed is bigger.
For the differential property of differential mechanism of the present invention being described, if left and right wheel speed is respectively n after automobile2、n6, in external tooth, the rotating speed of centre wheel (1) is n1, then can be obtained by Fig. 7:
In formula, Z2The number of teeth of swing movable gear (5)；Z1The number of teeth of centre wheel (1) in external tooth.
To turn left as set automobile, two front-wheels of automobile are under the effect of steering mechanism (Fig. 8), and its axis intersects at P point with the axis of automobile two trailing wheel, now can be considered that whole automobile is to turn round around P point.In the case of wheel and ground are non-slip, the rotating speed of two trailing wheels should be directly proportional to turning radius, Fig. 8 can obtain:
In formula, r bend mean radius；L rear tread half.
Simultaneous solution formula (1), formula (2):
Under the vehicle parameter determined and driving conditions, n1、Z1、Z2, L be known.Therefore, n2With n6Only become with radius of turn r.Therefore differential mechanism of the present invention possesses differential function, the vehicle equipping this differential mechanism can pass through any half curve.
Disclosed by the invention is widely suitable to the wheeled vehicle of there is a need to differential mechanism, such as automobile, engineering truck etc..
Claims (2)
1. the tooth-like automobile differential of pendulum that internal gear drives, main by centre wheel in external tooth (1), left half axle frame (2), taper roll bearing (3), right half-shell (4), swing movable gear (5), the biphase external cam of right axle shaft (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), oscillating tooth pin (11), deep groove ball bearing (12) forms, it is characterized in that: abandoned the planetary gear system of orthodox car differential mechanism, instead " the biphase external cam of centre wheel swing movable gear in external tooth " system, this system mainly includes centre wheel (1) in external tooth, left half axle frame (2), swing movable gear (5), the biphase external cam of right axle shaft (6), differential is realized with this system, constitute differential mechanism；In external tooth the outside of centre wheel (1) be spur bevel gear, inside be the internal gear with multiple projection, the number of its projection is the number of teeth of centre wheel (1) in external tooth, is designated as Z1Therefore centre wheel (1) is a bevel gear of main reducing gear in external tooth, it it is again the internal gear in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by centre wheel (1), and in external tooth, centre wheel (1) is fixedly connected into an entirety with right half-shell (4) by screw (8) and is supported in frame by a pair taper roll bearing (3)；The left end of left half axle frame (2) is left half axle, the left end of left half axle frame (2) and left side wheel (13) connect firmly mutually, right-hand member is loaded in external tooth in the internal gear of centre wheel (1), the right-hand member of left half axle frame (2) is tube-in-tube structure, has Z along this sleeve circumference2Individual radial direction guide groove, and in its right end face, have Z2Individual axially extending bore；Guide groove is built with swing movable gear (5)；Left half axle frame (2) is supported in external tooth in centre wheel (1) by a pair deep groove ball bearing (12)；In external tooth, the internal gear tooth curve of centre wheel (1) is that swing movable gear (5) on the one hand rotates with left half axle frame (2), the most again the envelope of residing a series of positions during oscillating tooth pin (11) eccentric rotary；The left end of the biphase external cam of right axle shaft (6) is biphase external cam, this biphase external cam own form is 180 ° of centrosymmetry, sole mass complete equipilibrium, its contour curve is standard ellipse curve, or be two-phase cosine curve, or be double eccentric arc curves, the biphase external cam of right axle shaft (6) is embedded in the right-hand member of left half axle frame (2), the right-hand member of the biphase external cam of right axle shaft (6) is right axle shaft, together with the biphase external cam of right axle shaft (6) is connected firmly with the right wheel (14) by right axle shaft, within the left end of the biphase external cam of right axle shaft (6) is supported on left half axle frame (2) by deep groove ball bearing (9), within right-hand member is supported on right half-shell (4) by deep groove ball bearing (7)；Above-mentioned swing movable gear (5) is fixed on left half axle frame (2) by oscillating tooth pin (11)；Having axially extending bore on left half axle frame (2), oscillating tooth pin (11) is inserted on this through hole through swing movable gear (5), thus is connected with left half axle frame (2) by swing movable gear (5)；Swing movable gear (5) forms revolute pair with oscillating tooth pin (11)；The outer cylinder surface of swing movable gear (5) is meshed respectively with the outline of the internal gear tooth of centre wheel in external tooth (1) and the biphase external cam of right axle shaft (6) one sliding pair of each composition；The tooth number Z of centre wheel (1) in external tooth1Tooth number Z with swing movable gear (5)2Difference is 2.
The tooth-like automobile differential of pendulum that internal gear the most according to claim 1 drives, it is characterized in that: in external tooth, centre wheel is multiple tooth engagement with swing movable gear, swing movable gear external cam biphase with right axle shaft, therefore registration is big, bearing capacity is big, can realize high-power, high pulling torque differential gearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620202651.3U CN205423738U (en) | 2016-03-16 | 2016-03-16 | Tooth -like automotive differential of internal gear driven pendulum |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620202651.3U CN205423738U (en) | 2016-03-16 | 2016-03-16 | Tooth -like automotive differential of internal gear driven pendulum |
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| CN205423738U true CN205423738U (en) | 2016-08-03 |
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| CN201620202651.3U Expired - Fee Related CN205423738U (en) | 2016-03-16 | 2016-03-16 | Tooth -like automotive differential of internal gear driven pendulum |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838201A (en) * | 2017-02-24 | 2017-06-13 | 四川大学 | Two teeth difference balance drive-type automobile differential |
| CN107477164A (en) * | 2017-09-28 | 2017-12-15 | 四川大学 | Two-tooth difference plane steel ball driven type automobile differential |
| CN108397535A (en) * | 2017-02-04 | 2018-08-14 | 上海汽车集团股份有限公司 | Reverse transmission and differential mechanism |
-
2016
- 2016-03-16 CN CN201620202651.3U patent/CN205423738U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397535A (en) * | 2017-02-04 | 2018-08-14 | 上海汽车集团股份有限公司 | Reverse transmission and differential mechanism |
| CN108397535B (en) * | 2017-02-04 | 2021-03-02 | 上海汽车集团股份有限公司 | Reverse transmission device and differential mechanism |
| CN106838201A (en) * | 2017-02-24 | 2017-06-13 | 四川大学 | Two teeth difference balance drive-type automobile differential |
| CN107477164A (en) * | 2017-09-28 | 2017-12-15 | 四川大学 | Two-tooth difference plane steel ball driven type automobile differential |
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Granted publication date: 20160803 Termination date: 20170316 |