CN205423737U - Electric automobile rear axle speed reducer differential mechanism assembly - Google Patents
Electric automobile rear axle speed reducer differential mechanism assembly Download PDFInfo
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- CN205423737U CN205423737U CN201620159228.XU CN201620159228U CN205423737U CN 205423737 U CN205423737 U CN 205423737U CN 201620159228 U CN201620159228 U CN 201620159228U CN 205423737 U CN205423737 U CN 205423737U
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- gear
- differential mechanism
- axle
- electric automobile
- rear axle
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Abstract
The utility model belongs to the technical field of vehicle rear axle technique and specifically relates to an electric automobile rear axle speed reducer differential mechanism assembly is related to, including drive box body, reduction gears and differential mechanism, reduction gears and differential mechanism all set up in drive box body, the reduction gears includes input shaft and output shaft, and the input shaft is connected with the driving motor transmission, and the output shaft is connected with the differential mechanism transmission for drive the differential mechanism operation, differential mechanism be provided with two output semi -axiss, two output the semi -axis respectively with two automobile wheel hub fixed connection. The utility model provides an electric automobile rear axle speed reducer differential mechanism assembly, simple structure, it is compact firm, in the time of can realizing through differential mechanism that electric automobile turns, the mutually supporting of inside and outside wheel speed to effectively prevent the distortion of electric automobile when the turning phenomenon of turning on one's side, avoided the emergence of traffic accident.
Description
Technical field
This utility model relates to vehicle rear axle technical field, especially relates to a kind of rear axle of electric automobile reductor differential assembly.
Background technology
Electric automobile is developed rapidly at home due to its energy-conserving and environment-protective performance and cheap usage charges in recent years, and since particularly 2015, back axle manufacture and the demand of electric automobile present fast development trend.Existing conventional electric automobile remains the variator of conventional vehicle, main reducing gear, differential mechanism, brake, therefore, requires relatively low to motor, and optional less motor.The driving means of existing electric automobile is usually following two: a kind of is to drive motor to add clutch to add two grades of gears, and this driving means must be provided with clutch configuration, and transmission loss is bigger, ineffective systems, and structure is complicated, need to regularly replace zero clutch parts, cost is high；Although and this driving means have employed two grades of speed changes, but between two grades, speed ratio difference is relatively big, impacts excessive in shift process, riding comfort is substantially reduced.A kind of existing electric automobile is also had to drive back axle, although motor is integrated with Design of Speed Reducer, but axle device without differential on back axle, or employing Dual-motors Driving, such motor drives back axle, when by bend, is the differential problem that cannot solve two trailing wheels, it is easier that rollover occurs, brings potential safety hazard to traveling.
Utility model content
For solving the problems referred to above, the rear axle of electric automobile reductor differential assembly that this utility model provides, it is arranged in drive case including drive case, reducing gear and differential mechanism, reducing gear and differential mechanism；Reducing gear includes that power shaft and output shaft, power shaft are connected with driving motor-driven；Output shaft is connected with differential drive, is used for driving differential mechanism to operate；Differential mechanism is provided with two output axle shafts, and two output axle shafts are fixed with two automotive hubs respectively and are connected.
Further, differential mechanism includes toothed disc, planetary wheel carrier and two axle shaft gears, and two planetary gears；Two relative being arranged on planetary wheel carrier of planetary gear, and two planetary gears are rotationally connected with planetary wheel carrier；Planetary wheel carrier is fixed on toothed disc；Toothed disc is set on an output axle shaft, and is rotationally connected with this output axle shaft；Two axle shaft gears are fixed with two output axle shafts respectively and are connected, and two axle shaft gears engage with two planetary gears respectively；Being provided with output gear on output shaft, output gear engages with toothed disc.
Further, differential mechanism also includes differential mechanism shell；Planetary wheel carrier, two axle shaft gears and two planetary gears are arranged in differential mechanism shell；Planet gear pad spherical in shape it is provided with between each planetary gear and differential mechanism shell；Axle shaft gear pad it is provided with between each axle shaft gear and differential mechanism shell.
Further, the material of planet gear pad and axle shaft gear pad is polytetrafluoroethylmaterial material.
Further, reducing gear also includes driving gear and driven gear；The diameter of driving gear is less than the diameter of driven gear；Driving gear is arranged on power shaft, and driven gear is arranged on output shaft；Driving gear engages with driven gear.
Further, drive case being provided with rear axle housing flange, rear axle housing flange is for being installed to rear axle casing of electric vehicle by drive case.
Further, the side of drive case is provided with for installing the adpting flange driving motor.
Further, driving motor is ac synchronous motor.
The rear axle of electric automobile reductor differential assembly that this utility model provides, simple in construction, Compact robust, when can realize electric automobile turning by differential mechanism, cooperating of interior outer wheel speeds, thus effectively prevent the electric automobile distortion rollover phenomenon when turning, it is to avoid the generation of vehicle accident.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the rear axle of electric automobile reductor differential assembly that Fig. 1 provides for this utility model embodiment.
Reference:
1-drive case；11-adpting flange；12-rear axle housing flange；
2-power shaft；21-driving gear；22-input shaft bearing；
23-oil sealing；3-output shaft；31-driven gear；
32-output gear；33-flat key；4-output axle shaft；
41-axle shaft gear；42-axle shaft gear pad；43-spring arch clasp；
44-differential bearing；5-toothed disc；6-planetary wheel carrier；
7-planetary gear；71-planet gear pad；8-differential mechanism shell.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be for only for ease of description this utility model and simplifying and describe; rather than instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.
The structural representation of the rear axle of electric automobile reductor differential assembly that Fig. 1 provides for this utility model embodiment.As it is shown in figure 1, the rear axle of electric automobile reductor differential assembly that the present embodiment provides, it is arranged in drive case 1 including drive case 1, reducing gear and differential mechanism, reducing gear and differential mechanism；Reducing gear includes that power shaft 2 and output shaft 3, power shaft 2 are connected with driving motor-driven；Output shaft 3 is connected with differential drive, is used for driving differential mechanism to operate；Differential mechanism is provided with two output axle shafts 4, and two output axle shafts 4 are fixed with two automotive hubs respectively and are connected.
Wherein, driving motor is ac synchronous motor, drive case 1 is provided with for installing the adpting flange 11 driving motor, and adpting flange 11 is fixed with hex bolts.Reducing gear includes power shaft 2 and output shaft 3, power shaft 2 is provided with driving gear 21, output shaft 3 is provided with driven gear 31, driving gear 21 engages with driven gear 31, drive driven by motor power shaft 2 to rotate, and then drive output shaft 3 to rotate, it is achieved the first order is slowed down.Seeing Fig. 1, the diameter of driving gear 21 is less than the diameter of driven gear 31, and its fixing speed reducing ratio is 7.5: 1.Power shaft 2 and output shaft 3 be arranged in parallel so that the compact conformation of whole driving back axle, it is possible to well adapt to running up of autosynchronous motor, are suitable for motor infinitely variable speeds and determine moment of torsion output control.
The two ends of power shaft 2 respectively equipped with an input shaft bearing 22, are wherein provided with rubber oil sea 23 with the one end driving motor to be connected, and can prevent dust foreign material from entering in drive case 1；The axle head driving motor to be connected being provided with external spline, coordinates with the internal spline of motor axis hole, motor rotation then band driven input shaft 2 rotates.
The two ends of output shaft 3 are also each equipped with an output bearing (not shown), and one end axial plane of output shaft 3 is provided with flat key 33, utilize and bonded driven gear 31 are easy on the output shaft 3 that combination assembling navigates in drive case 1.
Differential mechanism is provided with two output axle shafts 4, and the axle head of two output axle shafts 4 is set with differential bearing 44 and spring arch clasp 43 axial limiting in addition.
On the basis of above-described embodiment, further, differential mechanism includes toothed disc 5, planetary wheel carrier 6 and two axle shaft gears 41, and two planetary gears 7；Two relative being arranged on planetary wheel carrier 6 of planetary gear 7, and two planetary gears 7 are rotationally connected with planetary wheel carrier 6；Planetary wheel carrier 6 is fixed on toothed disc 5；Toothed disc 5 is set on an output axle shaft 4, and is rotationally connected with this output axle shaft 4；Two axle shaft gears 41 are fixed with two output axle shafts 4 respectively and are connected, and two axle shaft gears 41 engage with two planetary gears 7 respectively；Being provided with output gear 32 on output shaft 3, output gear 32 engages with toothed disc 5.
Being provided with output gear 32 on output shaft 3, output gear 32 engages with toothed disc 5, and output shaft 3 rotation driven gear dish 5 rotates, it is achieved slow down in the second level.Planetary wheel carrier 6 is fixed on toothed disc 5, and toothed disc 5 rotates and drives planetary wheel carrier 6 to rotate, and two planetary gears 7 on planetary wheel carrier 6 drive two axle shaft gears 41 to rotate, and then by two vehicle wheel rotations of two output axle shafts 4 driving automobile back axle respectively；
When automobile is kept straight on, left and right two wheels are equal with the rotating speed of planetary wheel carrier 6 three is in poised state；When automobile turning, arranged on left and right sides vehicle wheel rotational speed is inconsistent, the rotating speed causing two axle shaft gears 41 respectively by two output axle shafts 4 is the most inconsistent, owing to two planetary gears 7 and planetary wheel carrier 6 are rotationally connected, two axle shaft gear 41 rotating speeds are inconsistent causes two planetary gears 7 to produce rotation, thus realize the difference of arranged on left and right sides vehicle wheel rotational speed, effectively prevent the electric motor car distortion rollover phenomenon when turning, it is to avoid the generation of vehicle accident.
On the basis of above-described embodiment, further, differential mechanism also includes differential mechanism shell 8；6, two axle shaft gears 41 of planetary wheel carrier and two planetary gears 7 are arranged in differential mechanism shell 8；Planet gear pad 71 spherical in shape it is provided with between each planetary gear 7 and differential mechanism shell 8；It is provided with axle shaft gear pad 42 between each axle shaft gear 41 and differential mechanism shell 8.
On the basis of above-described embodiment, further, the material of planet gear pad 71 and axle shaft gear pad 42 is polytetrafluoroethylmaterial material.
It is equipped with axle shaft gear pad 42 between differential mechanism shell 8 and two axle shaft gears 41, axle shaft gear pad 42 is that polytetrafluoroethylmaterial material is made, it is axially fixed at the rotating shaft end of two axle shaft gears 41, prevents two axle shaft gear 41 rear end face contact axle sleeves, occur friction to cause abrasion.
Two planetary gears 7 are meshed with two axle shaft gears 41 rotation respectively.Planet gear pad 71 spherical in shape it is equipped with between two planetary gears 7 and differential mechanism shell 8.Planet gear pad 71 is that polytetrafluoroethylmaterial material is made, and is fixed on the rear end of planetary gear 7, prevents planetary gear 7 from contacting the housing of differential mechanism, occurs friction to cause abrasion.
On the basis of above-described embodiment, further, drive case 1 being provided with rear axle housing flange 12, rear axle housing flange 12 is for being installed to rear axle casing of electric vehicle by drive case 1.
Rear axle housing flange 12 is utilized drive case 1 to be installed on vehicle rear-axle housing, in order to form complete Automobile drive back axle.
Pass through embodiment of above, the rear axle of electric automobile reductor differential assembly that the present embodiment provides, the mode using gear reduction unit to engage with differential mechanism gear dish realizes two-stage gear reduced drive, it is not only simple in structure, Compact robust, and when can realize electric automobile turning by differential mechanism, cooperating of interior outer wheel speeds, thus effectively prevent the electric automobile distortion rollover phenomenon when turning, it is to avoid the generation of vehicle accident.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, it is not intended to limit；Although this utility model being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or the most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of this utility model each embodiment technical scheme.
Claims (8)
1. a rear axle of electric automobile reductor differential assembly, it is characterised in that include that drive case, reducing gear and differential mechanism, described reducing gear and described differential mechanism are arranged in described drive case；
Described reducing gear includes that power shaft and output shaft, described power shaft are connected with driving motor-driven；Described output shaft is connected with described differential drive, is used for driving described differential mechanism to operate；Described differential mechanism is provided with two output axle shafts, and two described output axle shafts are fixed with two automotive hubs respectively and are connected.
Rear axle of electric automobile reductor differential assembly the most according to claim 1, it is characterised in that described differential mechanism includes toothed disc, planetary wheel carrier and two axle shaft gears, and two planetary gears；
Two relative being arranged on described planetary wheel carrier of described planetary gear, and two described planetary gears are rotationally connected with described planetary wheel carrier；Described planetary wheel carrier is fixed on described toothed disc；Described toothed disc is set on a described output axle shaft, and is rotationally connected with this output axle shaft；Two described axle shaft gears are fixed with two described output axle shafts respectively and are connected, and two described axle shaft gears engage with two described planetary gears respectively；
Being provided with output gear on described output shaft, described output gear engages with described toothed disc.
Rear axle of electric automobile reductor differential assembly the most according to claim 2, it is characterised in that described differential mechanism also includes differential mechanism shell；Described planetary wheel carrier, two described axle shaft gears and two described planetary gears are arranged in described differential mechanism shell；It is provided with planet gear pad spherical in shape between each described planetary gear and described differential mechanism shell；It is provided with axle shaft gear pad between each described axle shaft gear and described differential mechanism shell.
Rear axle of electric automobile reductor differential assembly the most according to claim 3, it is characterised in that the material of described planet gear pad and described axle shaft gear pad is polytetrafluoroethylmaterial material.
Rear axle of electric automobile reductor differential assembly the most according to claim 2, it is characterised in that described reducing gear also includes driving gear and driven gear；The diameter of described driving gear is less than the diameter of described driven gear；
Described driving gear is arranged on described power shaft, and described driven gear is arranged on described output shaft；Described driving gear engages with described driven gear.
Rear axle of electric automobile reductor differential assembly the most according to claim 1, it is characterised in that be provided with rear axle housing flange in described drive case, described rear axle housing flange is for being installed to rear axle casing of electric vehicle by described drive case.
Rear axle of electric automobile reductor differential assembly the most according to claim 1, it is characterised in that the side of described drive case is provided with for installing the adpting flange driving motor.
Rear axle of electric automobile reductor differential assembly the most according to claim 1, it is characterised in that described driving motor is ac synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620159228.XU CN205423737U (en) | 2016-03-02 | 2016-03-02 | Electric automobile rear axle speed reducer differential mechanism assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620159228.XU CN205423737U (en) | 2016-03-02 | 2016-03-02 | Electric automobile rear axle speed reducer differential mechanism assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205423737U true CN205423737U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620159228.XU Expired - Fee Related CN205423737U (en) | 2016-03-02 | 2016-03-02 | Electric automobile rear axle speed reducer differential mechanism assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205423737U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570422A (en) * | 2016-03-02 | 2016-05-11 | 十堰焕金工贸有限公司 | Speed reducer and differential mechanism assembly for rear axle of electric automobile |
| CN107269792A (en) * | 2017-07-27 | 2017-10-20 | 苏州蓝王机床工具科技有限公司 | A kind of electro-tricycle variable ratio drive system |
-
2016
- 2016-03-02 CN CN201620159228.XU patent/CN205423737U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570422A (en) * | 2016-03-02 | 2016-05-11 | 十堰焕金工贸有限公司 | Speed reducer and differential mechanism assembly for rear axle of electric automobile |
| CN107269792A (en) * | 2017-07-27 | 2017-10-20 | 苏州蓝王机床工具科技有限公司 | A kind of electro-tricycle variable ratio drive system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20170302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |