CN110056636A - Automobile, power drive system and differential assembly - Google Patents
Automobile, power drive system and differential assembly Download PDFInfo
- Publication number
- CN110056636A CN110056636A CN201910339661.XA CN201910339661A CN110056636A CN 110056636 A CN110056636 A CN 110056636A CN 201910339661 A CN201910339661 A CN 201910339661A CN 110056636 A CN110056636 A CN 110056636A
- Authority
- CN
- China
- Prior art keywords
- groove
- locating part
- differential
- final gear
- differential assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
- F16D43/16—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with clutching members having interengaging parts
-
- 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
-
- 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
- F16H48/38—Constructional details
- F16H48/40—Constructional details characterised by features of the rotating cases
Abstract
A kind of automobile, power drive system and differential assembly, differential assembly include: differential casing, and the first groove is offered on outer peripheral surface；Final gear is sheathed on the outer peripheral surface of differential casing, and second groove opposite with the first slot opening is offered on the inner ring surface of final gear, and the first groove and the second groove surround accommodating chamber；Elastomer, in being set in accommodating chamber for compression shape, the first end of elastomer is in contact with the bottom wall of the second groove；Locating part is set in accommodating chamber, and the first end of locating part is in contact with the second end of elastomer, and is located in the second groove；Under the elastic force effect of elastomer, the second end of locating part is contained in the first groove, and under the action of the centrifugal force, the second end of locating part can enter in the second groove.When motor causes rotor to fly up because of failure, locating part can automatically cut off the transmitting of the power between final gear and differential casing, improve the security performance of vehicle operation.
Description
Technical field
The present embodiments relate to automobile technical field more particularly to a kind of automobile, power drive system and differential assemblies.
Background technique
The mode that is driven by electricity of electric car can be basically divided into central motor driving and two kinds of In-wheel motor driving,
In, central motor drive system mainly includes the components such as motor, fixed speed ratio retarder and differential mechanism.In this drive system
In, due to not having clutch and speed changer, the volume and quality of mechanical driving device can be reduced.Central motor driving system
System can also have another arrangement form, i.e., by motor, fixed speed ratio retarder and differential assembly one, two semiaxis connect
Two driving wheels are connect, this arrangement form is known as power drive system (eAxle drive system).
The power of motor is after speed changer exports, it is necessary to could transmit wheel, differential assembly through differential assembly
Including final gear and differential mechanism.The effect of final gear is that the power of speed changer output slows down again, is turned with increasing
Square imparts power to differential mechanism later.The function of differential mechanism is: while transmitting power to two-semiaxle, allowing two-semiaxle
It is rotated with different revolving speeds, to meet the needs of each wheel Unequal distance traveling.
In order to realize that the power transmission or power cut between motor and wheel, common way are in differential assembly
Upper increase synchronizing device perhaps isolator it is also desirable to increase executing agency to control synchronizing device or isolator,
This undoubtedly increases cost, and occupies much room.
Therefore, the structure of current differential assembly has to be optimized.
Summary of the invention
The technical issues of embodiment of the present invention solves is optimized to the structure of differential assembly, and cost is reduced, and is reduced
Occupied space.
To solve the above problems, the embodiment of the present invention provides a kind of differential assembly, comprising:
Differential casing offers the first groove on outer peripheral surface；
Final gear is sheathed on the outer peripheral surface of the differential casing, is opened on the inner ring surface of the final gear
Equipped with second groove opposite with the first slot opening, first groove and second groove surround accommodating chamber；
Elastomer, in being set in the accommodating chamber for compression shape, the first end of the elastomer and second groove
Bottom wall be in contact；
Locating part is set in the accommodating chamber, and the first end of the locating part connects with the second end of the elastomer
Touching, and be located in the second groove；Under the elastic force effect of the elastomer, the second end of the locating part is contained in described first
In groove, under the action of the centrifugal force, the second end of the locating part can enter in second groove.
Optionally, the cross-sectional shape of first groove is V-type or inverted trapezoidal or arc-shaped, the arc-shaped circular arc
Central angle be less than or equal to 180 °.
Optionally, the shape of the locating part is spherical or cone.
Optionally, second groove is cylindrical groove.
Optionally, the quantity of the accommodating chamber is at least two, circumferential direction of each accommodating chamber along the final gear
It is uniformly distributed.
Optionally, the quantity of the accommodating chamber is 6 or 8.
Optionally, the material of the locating part is steel.
Optionally, the elastomer is coil spring.
To solve the above problems, the embodiment of the present invention provides a kind of power drive system, including motor and above-mentioned differential
Device assembly, the final gear of the differential assembly connect the output shaft of the motor.
To solve the above problems, the embodiment of the present invention provides a kind of automobile, including wheel and above-mentioned power drive system, institute
State wheel described in the output axis connection of the differential mechanism of power drive system.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantage that
Differential assembly provided by the embodiment of the present invention, comprising: it is recessed to offer first on outer peripheral surface for differential casing
Slot；Final gear is sheathed on the outer peripheral surface of the differential casing, offered on the inner ring surface of the final gear with
The second opposite groove of first slot opening, first groove and second groove surround accommodating chamber；Elastomer, in compression
Shape is set in the accommodating chamber, and the first end of the elastomer is in contact with the bottom wall of second groove；Locating part, if
It is placed in the accommodating chamber, the first end of the locating part is in contact with the second end of the elastomer, and is located at the second groove
It is interior；Under the elastic force effect of the elastomer, the second end of the locating part is contained in first groove, in centrifugation masterpiece
Under, the second end of the locating part can enter in second groove.Since the first end of locating part is located in the second groove
And the second end of locating part is located in the first groove, thus locating part can be with the side wall of first groove and described second recessed
The side wall of slot is in contact, when carrying out power transmission between the final gear and the differential casing, the locating part
It can prevent to produce relative rotation between the final gear and the differential casing, that is, be set in the accommodating chamber
Elastic component and locating part the final gear and the differential casing can be connected as one, the final gear
It can be rotated together with the differential casing, realize power transmission.Since the elastic force of the elastic component can be preset, when
When motor failure rotor flies up, the revolving speed of final gear is very fast, as the revolving speed of final gear increases, locating part
Revolving speed also will increase, centrifugal force suffered by locating part also will increase, when the locating part centrifugal force be more than the elasticity
After the preset elastic force of part, the locating part is under the action of high centrifugal force along first groove to the side of second groove
To movement, until being completely in the second groove, first groove is completely disengaged.At this point, the locating part cannot the company of playing
The effect of the final gear and the differential casing is connect, the final gear and the differential casing are no longer one
Body so that the final gear can not impart power to the differential casing, namely has automatically cut off motor and vehicle
Power transmission between wheel improves the security performance of vehicle operation.As can be seen that differential mechanism provided by the embodiment of the present invention
Assembly, on the one hand, when electric motor normal working, the elastic component and the locating part can be by the final gears and institute
It states differential casing to be connected as one, guarantees that power normally transmits, moreover, elastic component can also absorb vibration as damping element
It is dynamic, so that can more stably transmit torque between the final gear and the differential casing；On the other hand, when
When motor causes rotor to fly up because of failure, the locating part can be detached from first groove under the influence of centrifugal force, from
And the transmitting of the power between the final gear and the differential casing is automatically cut off, improve the safety of vehicle operation
Energy.Further, the structure of differential assembly provided by the embodiment of the present invention is simple, is not take up exceptional space, is easily installed.
In optinal plan, the cross-sectional shape of first groove is V-type or inverted trapezoidal or arc-shaped, described arc-shaped
The central angle of circular arc is less than or equal to 180 °.The side wall of first groove to the direction of the support force of the locating part can generate with
The identical component in centrifugal force direction.In this way, wheel velocity could possibly be higher than electromotor velocity when vehicle descending or wheel-slip,
Trend to produce relative rotation between the differential casing and the final gear, because of the side of first groove
Wall can generate component identical with centrifugal force direction to the direction of the support force of the locating part, cause the locating part towards described
Movement, finally to disconnect between the differential casing and the final gear, the differential mechanism in second groove
Power transmitting disconnects between shell and the final gear, drags rotor caused by rotor most more than it so as to avoid wheel is counter
Big revolving speed, finally avoids rotor failure, improves the service life of motor.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of differential assembly；
Fig. 2 is the sectional schematic diagram that the direction A-A in Fig. 1 is splitted；
Fig. 3 is the structural schematic diagram of differential assembly provided by the embodiment of the present invention；
Fig. 4 is the status diagram of the power cut of differential assembly provided by the embodiment of the present invention.
Wherein: 1- differential casing；2- final gear；3- bolt；5- axle shaft gear；6- output shaft；
10- differential casing；The first groove of 100-；20- final gear；The second groove of 200-；30- elastomer；40- limit
Position part.
Specific embodiment
It can be seen from background technology that the structure of current differential assembly has to be optimized.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is a kind of structural schematic diagram of differential assembly；Fig. 2 is the direction A-A in Fig. 1
The sectional schematic diagram splitted.
As shown, a kind of differential assembly includes differential casing 1, final gear 2 and axle shaft gear 5, differential mechanism
It is rigidly connected between shell 1 and final gear 2 by bolt 3.Axle shaft gear 5 is fixed on horizontal axis, and defeated with differential mechanism
Connect to 6 anti-torsion of shaft.The power of motor passes to differential casing 1 by final gear 2, using axle shaft gear
5 and output shaft 6 pass to wheel.
On the one hand, due to being rigid connection between differential casing 1 and final gear 2, in order to realize motor and vehicle
Power transmission or power cut between wheel, common way are to increase synchronizing device or decoupling dress on differential assembly
It sets, it is also desirable to increase executing agency to control synchronizing device or isolator, this undoubtedly increases cost, and occupies very
Large space.On the other hand, in order to guarantee that torque transmits, bolt hole needs accurate processing, the quantity of the bolt 3 needed compared with
It is more, and need special tool that bolt is installed.It in summary it can be seen, the structure of current differential assembly needs to optimize.
In order to which the structure to differential assembly optimizes, the embodiment of the invention provides a kind of differential assembly, a sides
Face, when electric motor normal working, the elastic component and the locating part can be by the final gears and the differential mechanism
Shell is connected as one, and guarantees that power normally transmits, moreover, elastic component can also absorb vibration as damping element, to make
Torque can more stably be transmitted by obtaining between the final gear and the differential casing；On the other hand, when motor because
When failure causes rotor to fly up, the locating part can be detached from first groove under the influence of centrifugal force, to cut automatically
The power transmitting broken between the final gear and the differential casing, improves the security performance of vehicle operation.Into one
Step, the structure of differential assembly provided by the embodiment of the present invention is simple, is not take up exceptional space, is easily installed.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 3 and Fig. 4 are please referred to, Fig. 3 is the structural schematic diagram of differential assembly provided by the embodiment of the present invention.Fig. 4 is
The status diagram of the power cut of differential assembly provided by the embodiment of the present invention.
As shown, differential assembly provided by embodiment, comprising:
Differential casing 10 offers the first groove 100 on outer peripheral surface；
Final gear 20 is sheathed on the outer peripheral surface of the differential casing 10, the inner ring of the final gear 20
It offers on face and is open the second opposite groove 200, first groove 100 and second groove 200 with the first groove 100
Surround accommodating chamber；
Elastomer 30, in being set in the accommodating chamber for compression shape, the first end of the elastomer 30 and described second
The bottom wall of groove 200 is in contact；
Locating part 40 is set in the accommodating chamber, and the second of the first end of the locating part 40 and the elastomer 30
End is in contact, and is located in the second groove 200；Under the elastic force effect of the elastomer 30, the second end of the locating part 40
It is contained in first groove 100, under the action of the centrifugal force, the second end of the locating part 40 can enter second groove
In 200.
In one embodiment, the material of the locating part 40 can be steel, since steel have certain intensity, because
And locating part 40 and elastic component play the role of connected with differential shell 10 and final gear 20, and the cost of steel jointly
It is lower.Certainly, in other embodiments, locating part 40 is also possible to the other materials for having some strength.
In a specific embodiment, as shown in figure 3, the elastomer 30 is coil spring.Since coil spring is mark
Quasi- part, thus the coil spring that elastic force can be selected of different sizes according to need of work.Furthermore since coil spring shape is
It is cylindric, it is also convenient for the second groove 200 of processing.Certainly, in other embodiments, elastomer 30 is also possible to the bullet of other shapes
Spring, or other is selected to be different from the elastomer of spring materials 30, as long as guaranteeing that selected elastomer 30 has required bullet
Property power, can play the role of automatically cutting off power transmission.
Since the first end of locating part 40 is located in the second groove 200 and the second end of locating part 40 is located at the first groove
In 100, thus locating part 40 can be in contact with the side wall of the side wall of first groove 100 and second groove 200, when
When carrying out power transmission between the final gear 20 and the differential casing 10, the locating part 40 can prevent described
It produces relative rotation between final gear 20 and the differential casing 10, that is, the elastic component being set in the accommodating chamber
The final gear 20 and the differential casing 10 can be connected as one with locating part 40, the final gear 20
It can be rotated together with the differential casing 10, realize power transmission.
Since the elastic force of the elastic component can be preset, when motor failure rotor flies up, main reducing gear
The revolving speed of wheel 20 is very fast, and as the revolving speed of final gear 20 increases, the revolving speed of locating part 40 also be will increase, suffered by locating part 40
To centrifugal force also will increase, after the centrifugal force of the locating part 40 is more than the elastic component preset elastic force, the limit
Position part 40 is moved along first groove 100 to the direction of second groove 200 under the action of high centrifugal force, until completely
In the second groove 200, first groove 100 is completely disengaged.At this point, the locating part 40 cannot play the connection master
The effect of reduction gearing 20 and the differential casing 10, the final gear 20 and the differential casing 10 are no longer one
Body so that the final gear 20 can not impart power to the differential casing 10, namely has automatically cut off motor
Power transmission between wheel improves the security performance of vehicle operation.
Differential assembly provided by the embodiment of the present invention, on the one hand, when electric motor normal working, the elastic component and
The final gear 20 and the differential casing 10 can be connected as one by the locating part 40, guarantee that power normally passes
It passs, moreover, as damping element, elastic component can also absorb vibration, so that the final gear 20 and the differential
Torque can be more stably transmitted between device shell 10；On the other hand, when motor causes rotor to fly up because of failure, the limit
Position part 40 can be detached from first groove 100 under the influence of centrifugal force, to automatically cut off 20 He of final gear
Power transmitting between the differential casing 10, improves the security performance of vehicle operation.Further, the embodiment of the present invention
The structure of provided differential assembly is simple, is not take up exceptional space, is easily installed.
In a specific embodiment, as shown in figure 3, the cross-sectional shape of first groove 100 is V-type or the ladder that falls
Shape.
It should be noted that inverted trapezoidal refers to that the opening along depth of groove direction upper groove is gradually reduced.
In another specific embodiment, the shape of the cross section of the first groove 100 can also be arc-shaped, the circular arc
The central angle of the circular arc of shape is less than or equal to 180 °.
The cross section of first groove 100 is V-type, and side wall can be to the direction meeting of the support force of the locating part 40
Generate component identical with centrifugal force direction.In this way, wheel velocity could possibly be higher than motor when vehicle descending or wheel-slip
Speed, thus the trend that can be produced relative rotation between the differential casing 10 and the final gear 20, because of described
The side wall of one groove 100 can generate component identical with centrifugal force direction to the direction of the support force of the locating part 40, cause
The locating part 40 finally makes the differential casing 10 and the final gear towards moving in second groove 200
It being disconnected between 20, power transmitting disconnects between the differential casing 10 and the final gear 20, so as to avoid
Wheel is counter to drag rotor caused by rotor more than its maximum (top) speed, finally avoids rotor failure, improves the service life of motor.
The cross section of first groove 100 is inverted trapezoidal, and side wall can also be to the support force of the locating part 40
Direction can generate component identical with centrifugal force direction.The cross section for specifically please referring to first groove 100 is the implementation of V-type
Example, details are not described herein.
Similarly, the shape of the cross section of the first groove 100 is arc-shaped, and the central angle of the circular arc is less than or equal to 180 °
When, side wall can also can generate component identical with centrifugal force direction to the direction of the support force of the locating part 40.Specifically
The cross section for please referring to first groove 100 is the embodiment of V-type, and details are not described herein.
Below with reference to Fig. 4, differential assembly power is automatically cut off or is connected by power process and be illustrated.
By taking arrow B is the direction of rotation of differential assembly as an example, differential assembly during the work time, gradually with revolving speed
Increase, the centrifugal force that locating part 40 is born also gradually increases, and centrifugal force direction is as shown by arrow A, when locating part 40 is born
Centrifugal force be greater than elastic component elastic force when, locating part 40 will be moved along centrifugal force direction, when locating part 40 completely disengages
After first groove 100, differential casing 10 and final gear 20 are disconnected, so that final gear 20 can not pass torque
Differential casing 10 is passed, the power transmission cutting between motor and wheel.
When vehicle descending or wheel-slip, wheel velocity could possibly be higher than engine speed, cause wheel is counter to drag rotor, this
When wheel vehicle wheel rotational speed can pass to differential casing 10, the revolving speed of differential casing 10 can be greater than turning for final gear 20
Speed, thus the trend that can be produced relative rotation between differential casing 10 and final gear 20, due to the cross of the first groove 100
Section is V-type or inverted trapezoidal, therefore after locating part 40 is contacted with the side wall of the first groove 100, the side wall of the first groove 100 is to limit
The direction of support force of position part 40 can generate component identical with centrifugal force direction, so that the side wall of the first groove 100 can be to pushing away
Dynamic locating part 40 is moved to the direction of the second groove 200, finally locating part 40 can also be made to completely disengage the first groove 100, from
And locating part 40 can not play the role of connected with differential shell 10 and final gear 20, the torque of differential casing 10 cannot
Passing to final gear 20 namely wheel counter will not drag rotor, so as to avoid rotor failure, extend the use of motor
Service life.
With continued reference to Fig. 3, in a specific embodiment, the shape of the locating part 40 is spherical or cone.Work as limit
When the shape of position part 40 is spherical or cone, on the one hand, can be with when the resilient force of elastic component is when on locating part 40
By resilient force in the center of locating part 40, so that 40 uniform force of locating part, prevents locating part 40 from deflecting；Another party
Face, spherical or cone locating part 40 are also convenient for processing.
With continued reference to Fig. 4, in a specific embodiment, for the ease of processing, second groove 200 can be cylinder
Groove.Certainly, in other embodiments, second groove 200 is also possible to other shapes, as long as can guarantee that elastic component can
To be placed in the second groove 200, and locating part 40 is contacted with the side wall of the second groove 200.
In a specific embodiment, as shown in figure 3, the quantity of the accommodating chamber is at least two, each accommodating chamber
Circumferential direction along the final gear 20 is uniformly distributed.So set, the connection of differential assembly is more stable, the course of work
It is more steady.
The particular number of the accommodating chamber of differential assembly can be freely arranged according to the size of differential assembly.Specifically, institute
The quantity for stating accommodating chamber can be 6 or 8.It is not only able to guarantee uniform force in this way, nor structure can be destroyed
Stability.
The embodiment of the present invention also provides a kind of power drive system, including motor and above-mentioned differential assembly, the difference
The final gear of fast device assembly connects the output shaft of the motor.
On the one hand, when electric motor normal working, the elastic component and the locating part can be by the final gears
It is connected as one with the differential casing, guarantees that power normally transmits, moreover, elastic component can also be inhaled as damping element
Vibration is received, so that can more stably transmit torque between the final gear and the differential casing；Another party
Face, when motor causes rotor to fly up because of failure, it is recessed that the locating part can be detached from described first under the influence of centrifugal force
Slot improves vehicle operation to automatically cut off the power transmitting between the final gear and the differential casing
Security performance.Further, the structure of differential assembly provided by the embodiment of the present invention is simple, is not take up exceptional space, easily
In installation.
The embodiment of the present invention also provides a kind of automobile, including wheel and above-mentioned power drive system, the power drive system
Differential mechanism output axis connection described in wheel.The automobile as provided by the embodiment of the present invention includes above-mentioned electric drive trains
System, thus there is function identical with above-mentioned power drive system and effect, it specifically please refers to above, details are not described herein.
Although the embodiment of the present invention discloses as above, present invention is not limited to this.Anyone skilled in the art, not
It is detached from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should be with right
It is required that subject to limited range.
Claims (10)
1. a kind of differential assembly characterized by comprising
Differential casing offers the first groove on outer peripheral surface；
Final gear is sheathed on the outer peripheral surface of the differential casing, is offered on the inner ring surface of the final gear
Second groove opposite with the first slot opening, first groove and second groove surround accommodating chamber；
Elastomer, in being set in the accommodating chamber for compression shape, the bottom of the first end of the elastomer and second groove
Wall is in contact；
Locating part is set in the accommodating chamber, and the first end of the locating part is in contact with the second end of the elastomer, and
In the second groove；Under the elastic force effect of the elastomer, the second end of the locating part is contained in first groove
Interior, under the action of the centrifugal force, the second end of the locating part can enter in second groove.
2. differential assembly as described in claim 1, which is characterized in that the cross-sectional shape of first groove be V-type or
Inverted trapezoidal is arc-shaped, and the central angle of the arc-shaped circular arc is less than or equal to 180 °.
3. differential assembly as claimed in claim 2, which is characterized in that the shape of the locating part is spherical or cone.
4. differential assembly as claimed in claim 3, which is characterized in that second groove is cylindrical groove.
5. differential assembly according to any one of claims 1-4, which is characterized in that the quantity of the accommodating chamber is at least two
A, each accommodating chamber is uniformly distributed along the circumferential direction of the final gear.
6. differential assembly as claimed in claim 5, which is characterized in that the quantity of the accommodating chamber is 6 or 8.
7. differential assembly according to any one of claims 1-4, which is characterized in that the material of the locating part is steel.
8. differential assembly according to any one of claims 1-4, which is characterized in that the elastomer is coil spring.
9. a kind of power drive system, which is characterized in that including motor and as the described in any item differential mechanisms of claim 1-8 are total
At the final gear of the differential assembly connects the output shaft of the motor.
10. a kind of automobile, which is characterized in that including wheel and power drive system as claimed in claim 9, the electric drive trains
Wheel described in the output axis connection of the differential mechanism of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339661.XA CN110056636A (en) | 2019-04-25 | 2019-04-25 | Automobile, power drive system and differential assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339661.XA CN110056636A (en) | 2019-04-25 | 2019-04-25 | Automobile, power drive system and differential assembly |
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| CN110056636A true CN110056636A (en) | 2019-07-26 |
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ID=67320746
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910339661.XA Pending CN110056636A (en) | 2019-04-25 | 2019-04-25 | Automobile, power drive system and differential assembly |
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| CN (1) | CN110056636A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552976A (en) * | 2019-09-18 | 2019-12-10 | 郭水春 | middle connection speed control device for rotary driving |
| CN112061268A (en) * | 2020-08-17 | 2020-12-11 | 温州苓杰贸易有限公司 | A speed reduction strutting arrangement for intelligent electrodynamic balance car |
| CN114151460A (en) * | 2021-12-13 | 2022-03-08 | 南京邦奇自动变速箱有限公司 | Double-spring power coupling device of transmission |
-
2019
- 2019-04-25 CN CN201910339661.XA patent/CN110056636A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552976A (en) * | 2019-09-18 | 2019-12-10 | 郭水春 | middle connection speed control device for rotary driving |
| CN112061268A (en) * | 2020-08-17 | 2020-12-11 | 温州苓杰贸易有限公司 | A speed reduction strutting arrangement for intelligent electrodynamic balance car |
| CN114151460A (en) * | 2021-12-13 | 2022-03-08 | 南京邦奇自动变速箱有限公司 | Double-spring power coupling device of transmission |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190726 |
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| WD01 | Invention patent application deemed withdrawn after publication |