CN108237904A - Drive shaft locking system and power-driven system and vehicle - Google Patents
Drive shaft locking system and power-driven system and vehicle Download PDFInfo
- Publication number
- CN108237904A CN108237904A CN201611226797.2A CN201611226797A CN108237904A CN 108237904 A CN108237904 A CN 108237904A CN 201611226797 A CN201611226797 A CN 201611226797A CN 108237904 A CN108237904 A CN 108237904A
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- Prior art keywords
- drive shaft
- joint portion
- vehicle
- locking system
- driving
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Classifications
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- 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
-
- 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
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Retarders (AREA)
Abstract
The invention discloses a kind of drive shaft locking systems and power-driven system and vehicle, drive shaft locking system to include：Planetary gear mechanism；First, second drive shaft and power engagement device, power engagement device include the first and second joint portions, and the first drive shaft is connected with sun gear and is rotated synchronously with the first joint portion, and the second drive shaft is connected with gear ring and is rotated synchronously with the second joint portion；Joint portion driving device, joint portion driving device include：Needle and driving portion are driven, driving portion is for driving driving needle that the second joint portion is driven to be moved in an axial direction to close to the direction at the first joint portion, so as to which the second joint portion be made to engage the first joint portion；Sleeve, the second joint portion is rotated with sleeve and relative sleeve is axially movable；Elastic device, elastic device are resiliently arranged between the second joint portion and sleeve.Drive shaft locking system can improve the ability of getting rid of poverty of vehicle with two drive shafts of locking in this way.
Description
Technical field
The present invention relates to technical field of vehicle more particularly to a kind of drive shaft locking system for vehicle and with should
The power-driven system of drive shaft locking system, the also vehicle with the power-driven system.
Background technology
In the relevant technologies, new-energy automobile employs distributed type of drive, and both sides wheel is respectively driven by two motors,
Rotating speed, the torque of left and right wheel can independently be adjusted by controller, are eliminated differential mechanism in this way, but easily beaten certain
Still need locking left and right half under ways condition to improve trafficability.It if should by traditional electric locking formula differential mechanism
For the new-energy automobile of distribution driving, then the differential function of differential mechanism, and traditional electric locking formula differential are wasted
Device is complicated, and parts are more, and occupied space is more.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention carries
Go out a kind of drive shaft locking system for vehicle, which can be conducive to two drive shafts of locking
Vehicle is got rid of poverty.
The present invention further proposes a kind of power-driven system.
The present invention further also proposed a kind of vehicle.
Drive shaft locking system according to the present invention for vehicle, including：Planetary gear mechanism, the planetary gear machine
Structure includes sun gear, planetary gear, planet carrier and gear ring；First drive shaft, the second drive shaft and power engagement device, the power
Engagement device includes the first joint portion and the second joint portion, and first drive shaft is connected with the sun gear, and first drives
Moving axis is also configured to rotate synchronously with the first joint portion, and second drive shaft is connected with the gear ring, second drive shaft
It is also configured to rotate synchronously with second joint portion；Joint portion driving device, the joint portion driving device include：Drive needle
And driving portion, the driving needle is arranged to can be with the planet carrier around the center axis thereof of the sun gear and can be relatively described
Planet carrier moves axially, and the both ends of the driving needle coordinate respectively with the driving portion and second joint portion, the driving
Portion is arranged for that the driving needle is driven to drive second joint portion along the axial direction to close to first joint portion
Direction is moved, so as to which second joint portion be made to engage first joint portion；Sleeve, the sleeve connection the gear ring with
Between second drive shaft, second joint portion is rotated with the sleeve and relatively described sleeve is axially movable；Elasticity
Device, the elastic device is resiliently arranged between second joint portion and the sleeve so that second joint portion has
The trend of the direction movement at oriented separate first joint portion.
Drive shaft locking system according to the present invention, when the first joint portion and the engagement of the second joint portion, the first drive shaft
And second be mutually locked between drive shaft, the first drive shaft and the second drive shaft can rotate synchronously, and then can be conducive to vehicle
Get rid of poverty.Moreover, by arranging joint portion driving device and power engagement device, it can realize that the first drive shaft and second is driven
The locking of moving axis can so that drive shaft locking system is simple in structure in this way, and reliable function realization, parts are few, small, into
This is low.
In addition, drive shaft locking system according to the present invention can also have following distinguishing feature：
In some examples of the present invention, the driving portion includes：Servo-actuated portion, the servo-actuated portion can turn with the driving needle
It is dynamic, and the servo-actuated portion can be braked, and drive surface is provided in the servo-actuated portion, by described when the servo-actuated portion is braked
It drives slip of the needle in the drive surface and makes the drive surface driving driving needle along the axial movement, so that described
Second joint portion engages the first joint portion engagement.
In some examples of the present invention, the driving portion further includes：Braking parts, the braking parts are arranged for braking
The servo-actuated portion.
In some examples of the present invention, the braking parts are arranged to utilize portion servo-actuated described in electromagnetism dynamic braking.
In some examples of the present invention, the driving portion is electromagnetic brake, and the servo-actuated portion forms the electromagnetic system
The brake component of dynamic device, the braking parts form the brake bracket of the electromagnetic brake.
In some examples of the present invention, servo-actuated portion's empty set is in first drive shaft.
In some examples of the present invention, the drive surface is inclined-plane or curved surface.
In some examples of the present invention, the drive surface includes：First segment and second segment, the first segment and described
Two sections are connected, and the junction of the first segment and the second segment is minimum point, the first segment and the second segment it is separate
The other end of the junction is peak.
In some examples of the present invention, the servo-actuated portion includes：It is servo-actuated portion's ontology and is arranged on servo-actuated portion's ontology
On annular servo-actuated portion's flange, be provided with the drive surface on the end face of the direction of the servo-actuated portion's flange driving needle.
In some examples of the present invention, drive surface limiting slot, one end of the driving needle are provided in the drive surface
In the drive surface limiting slot.
The present invention some examples in, first drive shaft is connected with the sun gear, second drive shaft and
The gear ring is connected, and the driving needle wears the planet carrier；The planetary gear is mounted on the planet carrier by planet wheel spindle
On, the driving needle is the same part with the planet wheel spindle.
The present invention some examples in, first drive shaft is connected with the sun gear, second drive shaft and
The gear ring is connected, and the driving needle wears the planet carrier；The planetary gear is mounted on the planet carrier by planet wheel spindle
On, the driving needle is spaced apart with the planet wheel spindle.
In some examples of the present invention, the planet carrier is two and is separately positioned on the both sides of the sun gear, institute
It states driving needle and wears two planet carriers.
In some examples of the present invention, sleeve axial groove is provided on the sleeve, is set on second joint portion
There is the second joint portion raised, second joint portion protrusion is arranged in the sleeve axial groove, so that second engagement
Portion can be rotated with the sleeve and relatively described sleeve is axially movable.
In some examples of the present invention, second joint portion empty set is in first drive shaft.
In some examples of the present invention, first joint portion and second joint portion are accommodated in the sleeve
It is interior.
In some examples of the present invention, the elastic device is helical spring and is sleeved in first drive shaft.
In some examples of the present invention, first joint portion is arranged and is fixed in first drive shaft, described
Helical spring is located at the outside at first joint portion.
In some examples of the present invention, the elastic device is accommodated in the sleeve.
In some examples of the present invention, first joint portion has multiple the first circumferentially distributed engagement teeth, institute
Stating the second joint portion has multiple the second circumferentially distributed engagement teeth.
In some examples of the present invention, the gear ring has integrally formed annular extension, the annular extension
Form the sleeve.
In some examples of the present invention, multiple arcs connection strap is provided between the gear ring and the sleeve, it is described
Multiple arcs connection strap is circumferentially spaced to be distributed and is fixed respectively with the gear ring and the sleeve weld.
The present invention some examples in, first drive shaft is connected with the sun gear, second drive shaft and
The gear ring is connected, and the driving needle wears the planet carrier；The planet carrier has the multiple convex of circumferentially spaced distribution
Plate, the multiple protrusive board are divided into the first protrusive board and the second protrusive board, and multiple first protrusive boards and multiple second protrusive boards are in week
Upward interlaced arrangement, first protrusive board are provided with to support the drive on second cam for installing planet wheel spindle
The driving needle support holes of dynamic needle.
Power-driven system according to the present invention, including：The drive shaft locking system for vehicle；First is electronic
Generator, first dynamotor and first drive shaft are driven and output power to one in pair of wheels；
Second dynamotor, second dynamotor are driven with second drive shaft and output power in pair of wheels
Another.
The advantageous effect of the power-driven system is identical with the advantageous effect of the drive shaft locking system, herein no longer
It is described in detail.
Vehicle according to the invention, including the power-driven system.
The advantageous effect of the vehicle is identical with the advantageous effect of the power-driven system, and this will not be detailed here.
Description of the drawings
Fig. 1 is the schematic diagram of drive shaft locking system according to embodiments of the present invention；
Fig. 2 is the explosive view of drive shaft locking system according to embodiments of the present invention；
Fig. 3 is the structure diagram of drive shaft locking system according to embodiments of the present invention；
Fig. 4 is the structure diagram in servo-actuated portion；
Fig. 5 is sleeve and the structure diagram of the second drive shaft；
Fig. 6 is the sectional view of drive shaft locking system according to embodiments of the present invention；
Fig. 7 is the schematic diagram of power-driven system according to embodiments of the present invention；
Fig. 8 is the schematic diagram of power-driven system according to embodiments of the present invention.
Reference numeral：
Power-driven system 1000；
Drive shaft locking system 100；
Planetary gear mechanism 10；Sun gear 11；Planetary gear 12；Planet carrier 13；First protrusive board 131；Second protrusive board 132；Tooth
Circle 14；
First drive shaft 20；
Second drive shaft 30；
Power engagement device 40；First joint portion 41；First engagement tooth 411；Second joint portion 42；Second joint portion protrusion
421；Second engagement tooth 422；
Joint portion driving device 50；Drive needle 51；Driving portion 52；Servo-actuated portion 521；Servo-actuated portion ontology 521a；Servo-actuated portion is convex
Edge 521b；
Braking parts 522；
Drive surface 523；First segment 523a；Second segment 523b；Drive surface limiting slot 523c；
Sleeve 60；Sleeve axial groove 61；Arc connection strap 62；
Elastic device 70；
First dynamotor D1；Second dynamotor D2；Third dynamotor D3；4th dynamotor D4；
The near front wheel Z1；Left rear wheel Z2；Off-front wheel Y1；Off hind wheel Y2.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings drive shaft locking system 100 according to embodiments of the present invention is described in detail, the drive shaft locking
Device 100 can be applied on vehicle, especially suitable for the new-energy automobile using distributed driving, drive shaft locking system
100 can be used for two drive shafts of locking, so that left and right wheels rotate synchronously, can greatly improve vehicle and get rid of poverty energy
Power, vehicle can be electric vehicle, but not limited to this.
As depicted in figs. 1 and 2, drive shaft locking system 100 according to embodiments of the present invention can include：Planetary gear machine
Structure 10, the first drive shaft 20, the second drive shaft 30, power engagement device 40, joint portion driving device 50, sleeve 60 and elasticity dress
Put 70.
Planetary gear mechanism 10 includes sun gear 11, planetary gear 12, planet carrier 13 and gear ring 14, and planetary gear 12 can rotate
Ground is mounted on planet carrier 13, and planetary gear 12 is engaged between sun gear 11 and gear ring 14, and planetary gear 12 can be as a result,
Passing power between sun gear 11 and gear ring 14.Wherein, planetary gear 12 can be multiple, such as three, and three planetary gears 12 can
It is uniformly distributed with the central axis about sun gear 11.Planet wheel spindle can be installed, planetary gear 12 is mounted on planet carrier 13
On planet wheel spindle.
First drive shaft 20 and the second drive shaft 30 are two independent axis, for example, the first drive shaft 20 can be with left vehicle
Wheel transmission, the second drive shaft 30 can be with right wheel drive.The axis of first drive shaft 20 and the second drive shaft 30 can be conllinear.
However, the present invention is not limited thereto, such as the first drive shaft 20 can also be right axle shafts, and the second drive shaft 30 can be left half axle.
Power engagement device 40 includes the first joint portion 41 and the second joint portion 42, the first drive shaft 20 and 11 phase of sun gear
Even, and the first drive shaft 20 is also configured to rotate synchronously (i.e. synchronized, equidirectional rotation) with the first joint portion 41, the second driving
30 gear ring 14 of axis is connected, and the second drive shaft 30 is also configured to rotate synchronously (i.e. synchronized, equidirectional rotation) with the second joint portion 42.
Joint portion driving device 50 can include：Needle 51 and driving portion 52 are driven, driving needle 51 is arranged to planet
Frame 13 around sun gear 11 center axis thereof, and drive needle 51 be arranged to move axially with respect to planet carrier 13.
The both ends of driving needle 51 coordinate respectively with 52 and second joint portion 42 of driving portion, and driving portion 52 is arranged for driving
Needle 51 is driven to drive the second joint portion 42 in an axial direction to close to the direction at the first joint portion 41 (side from left to right i.e. shown in FIG. 1
To) mobile, so as to which the second joint portion 42 be made to engage the first joint portion 41.
That is, planet carrier 13 can drive driving needle 51 to rotate synchronously, and driving portion 52 can drive driving needle
51 move from left to right, and since one end of driving needle 51 coordinates with the second joint portion 42, drive needle 51 can be with synchronous drive in this way
Second joint portion 42 moves from left to right, the second joint portion 42 constantly close to the first joint portion 41, until the second joint portion 42 with
First joint portion 41 engages, wherein, when the first joint portion 41 and the engagement of the second joint portion 42, the first drive shaft 20 and second is driven
It is mutually locked between moving axis 30, the first drive shaft 20 and the second drive shaft 30 can rotate synchronously, the power of such skidding side
It can be exported by opposite side, and then getting rid of poverty for vehicle can be conducive to.
Traditional electric locking formula differential mechanism is the addition electric actuation locking machine on the basis of common open type differential
Structure so as to which differential mechanism has latch functions, passes through electrical control differential mechanism locking.This is that one kind is usually applied to centralized driving formula
The electric locking differential mechanism of fuel-engined vehicle, i.e. power are respectively allocated to left and right half after main reducing gear, differential mechanism, by difference
Fast device adjusts left and right difference in wheel.But cannot be directly applied on electric vehicle, such electric locking differential mechanism volume is big, and
And electric vehicle does not have engine.
Drive shaft locking system 100 of the invention is clearly distinguishable from traditional electronic from structure and realization method as a result,
Locking differential moreover, by arranging joint portion driving device 50 and power engagement device 40, can realize the first drive shaft
20 and second drive shaft 30 locking, can cause that drive shaft locking system 100 is simple in structure in this way, reliable function realization, zero
Component is few, small, at low cost.
Wherein, as shown in Figure 1, planetary gear mechanism 10, power engagement device 40, the first drive shaft 20 and the second drive shaft
30 is coaxially arranged.Thus, it is possible to so that 100 radial dimension of drive shaft locking system is small, it is small, it occupies little space.
Wherein, as shown in Figure 1, driving portion 52 can include：Servo-actuated portion 521, being servo-actuated portion 521 can be with 51 turns of needle of driving
It is dynamic, and servo-actuated portion 521 can be braked, and drive surface 523 is provided in servo-actuated portion 521, and servo-actuated portion 521 passes through drive when being braked
Dynamic slip of the needle 51 in drive surface 523 makes drive surface to change driving needle 51 and the position that is engaged of drive surface 523
523 driving driving needles 51 are axially moveable, so that the second joint portion 42 engages the first joint portion 41.It is understood that with
Before dynamic portion 521 is not braked, it can be synchronous rotation relationship to be servo-actuated portion 521 and driving needle 51, but is made in servo-actuated portion 521
After dynamic, the rotating speed for being servo-actuated portion 521 reduces, and speed discrepancy will occurs between servo-actuated portion 521 and driving needle 51, and drive needle 51 can in this way
To be slided in the drive surface 523 in servo-actuated portion 521, the driving needle 51 after sliding can be moved axially with respect to planet carrier 13, from
And drive needle 51 that the second joint portion 42 can be driven to move closer to the first joint portion 41, until the second joint portion 42 is engaged with first
Portion 41 engages.
Further, as shown in Figure 1, driving portion 52 can also include：Braking parts 522, braking parts 522 are arranged for making
Dynamic servo-actuated portion 521.That is, braking parts 522 can play the role of the servo-actuated portion 521 of braking, when the first joint portion 41 of needs
When being engaged with the second joint portion 42, braking parts 522 can brake servo-actuated portion 521.
Preferably, braking parts 522 can be arranged to be servo-actuated portion 521 using electromagnetism dynamic braking.Electromagnetic force control is accurate and can
It leans on, so as to improve the functional reliability of drive shaft locking system 100, the use of drive shaft locking system 100 can be extended
Service life.For example, driving portion 52 can be electromagnetic brake, it is servo-actuated the brake component that portion 521 forms electromagnetic brake, braking parts 522
Form the brake bracket of electromagnetic brake.Using the control mode of electromagnetic brake and planetary gear mechanism, drive shaft can be simplified
The control system of locking system 100 and it can cause system reliability higher.
Optionally, as shown in Figure 1, servo-actuated portion 521 can be with empty set in the first drive shaft 20.Thus, it is possible to advantageously
In servo-actuated portion 521 and the cooperation between needle 51 is driven, but also drive shaft locking system 100 can be reduced at least to some extent
Axial length, the volume of drive shaft locking system 100 can be reduced.
A specific embodiment according to the present invention, as shown in figure 4, drive surface 523 can be inclined-plane or curved surface.Pass through
Drive surface 523 is arranged to inclined-plane or curved surface, can be conducive to that needle 51 is driven to slide in drive surface 523, and can promote
Driving needle 51 is made to move in the axial direction.
Further, drive surface 523 can include：First segment 523a and second segment 523b, first segment 523a and second segment
523b is connected, and the junction of first segment 523a and second segment 523b is minimum point, and first segment 523a and second segment 523b's is separate
The other end of junction is peak.As a result, when one end of needle 51 is driven to be in minimum point, the first joint portion 41 and second connects
Conjunction portion 42 is in discrete state, when the one end for driving needle 51 is at the highest notch or during neighbouring peak, the first joint portion 41 and the
Two joint portions 42 are in engagement state.In this way by reasonable Arrangement drive surface 523, can be conducive to drive needle 51 in minimum point and
It is slided between peak, the engagement at the first joint portion 41 and the second joint portion 42 can be conducive in this way, can be conducive to be promoted
The functional reliability of drive shaft locking system 100.
Preferably, each section in first segment 523a and second segment 523b all can be arc-shaped.The first of circular shape
Section 523a and second segment 523b can be conducive to drive slip of the one end of needle 51 in drive surface 523, can reduce driving needle
51 moving resistance.
Optionally, each section of corresponding center of circle angle in first segment 523a and second segment 523b is identical.Such first segment
523a and second segment 523b are essentially identical, so as to be more conducive to slip of the driving needle 51 in drive surface 523.
Optionally, drive surface 523 can be multistage, and 523 circumferentially spaced distribution of multistage drive surface.It drives as a result,
The quantity of dynamic needle 51 can be corresponding with the quantity of drive surface 523, can increase the quantity of driving needle 51 in this way, so as to so that
It obtains 51 and second joint portion 42 of multiple driving needles to coordinate reliably, the second joint portion 42 can be caused to move axially reliably, can be made
Drive shaft locking system 100 work it is more reliable.
Wherein, can be connected between multistage drive surface 523 by connecting plane, connection plane is concordant with peak.In this way
Structural reliability of the servo-actuated portion 521 on the surface of drive surface 523 can be improved at least to some extent, can promote drive shaft lock
The structural reliability of locking apparatus 100.
An alternative embodiment according to the present invention, as shown in figure 4, servo-actuated portion 521 can include：Servo-actuated portion ontology 521a
With the servo-actuated portion's flange 521b of annular being arranged on servo-actuated portion's ontology 521a, it is servo-actuated the direction driving needle 51 of portion flange 521b
Drive surface 523 is provided on end face.Portion ontology 521a servo-actuated in this way can effectively enhance the structural reliability in servo-actuated portion 521, and
And can drive surface 523 be set on the end face of servo-actuated portion flange 521b, so as to reduce the design difficulty of drive surface 523,
The structural reliability of drive surface 523 can be improved.
Further, as shown in figure 4, drive surface limiting slot 523c can be provided in drive surface 523, the one of driving needle 51
End is located in drive surface limiting slot 523c.As a result, by setting drive surface limiting slot 523c, can to drive one end of needle 51
Cooperation can prevent one end of driving needle 51 from drive surface 523 at least to some extent in this way in drive surface limiting slot 523c
Middle disengaging can improve mobile reliability and stability of the driving needle 51 in drive surface 523.
A specific embodiment according to the present invention, the first drive shaft 20 are connected with sun gear 11, the second drive shaft 30 with
Gear ring 14 is connected, and driving needle 51 wears planet carrier 13.Planetary gear 12 is mounted on by planet wheel spindle on planet carrier 13, drives needle 51
Can be the same part with planet wheel spindle.As a result, by rationally setting the length of planet wheel spindle, can to omit driving needle
51, and planet wheel spindle arranged on planet carrier 13 reliably, so as to reduce the cost of drive shaft locking system 100 and
Reduce the amount of parts of drive shaft locking system 100.
Certainly, the present invention is not limited thereto, another specific embodiment according to the present invention, the first drive shaft 20 and the sun
Wheel 11 is connected, and the second drive shaft 30 is connected with gear ring 14, and driving needle 51 wears planet carrier 13.Planetary gear 12 is pacified by planet wheel spindle
On planet carrier 13, driving needle 51 is spaced apart with planet wheel spindle.Drive needle 51 and planet wheel spindle independent of one another for two as a result,
Component, the change of planet carrier 13 can be reduced in this way, by reasonable Arrangement drive needle 51, can cause drive shaft locking system
100 realize corresponding latch functions.Optionally, in this embodiment, driving needle 51 is arranged in parallel with planet wheel spindle 13.
Wherein, as shown in Figure 1, planet carrier 13 can be two, and two planet carriers 13 are separately positioned on sun gear 11
Both sides, driving needle 51 wear two planet carriers 13.Driving needle 51 needs coordinate with the second joint portion 42 as a result, drive in this way
The axial length of needle 51 is larger, so by arranging two planet carriers 13 spaced apart, can advantageously ensure that driving needle 51
Stability is arranged, so as to improve the structural reliability of drive shaft locking system 100 and driving needle 51 can be made to install together
Axis degree improves, and when axial movement is also not easy to deviate.
As shown in Fig. 1, Fig. 3, Fig. 5 and Fig. 6, drive shaft locking system 100 can also include：Sleeve 60, sleeve 60 connect
Between 14 and second drive shaft 30 of gear ring, the second joint portion 42 is rotated with sleeve 60, and 42 relative sleeve of the second joint portion
60 can move axially.60 and second drive shaft 30 of sleeve can be integrally formed part, and then sleeve 60 can be with 14 phase of gear ring
Even.Wherein, the second joint portion 42 is rotated with sleeve 60, and such second joint portion 42 can pass through 60 and second drive shaft 30 of sleeve
It rotates synchronously, is moved axially by the way that the second joint portion 42 is arranged to relative sleeve 60, the second joint portion 42 can be promoted
It can be moved axially with respect to the first joint portion 41, and not influence 60 and second drive shaft 30 of sleeve, so as to improve driving
The structural reliability and functional reliability of axis locking system 100.
Further, as shown in Figure 2 and Figure 5, sleeve axial groove 61 is provided on sleeve 60, is set on the second joint portion 42
There is the second joint portion protrusion 421, the second joint portion protrusion 421 is arranged in sleeve axial groove 61, so that the second joint portion 42
It can be rotated with sleeve 60, and 42 relative sleeve 60 of the second joint portion is axially movable.Sleeve axial groove 61 axially extends,
Axial movement that in this way can be in order to the second joint portion protrusion 421 on sleeve axial groove 61, and limitation can be conducive to
The circumferential position of two joint portion protrusions 421 can enable sleeve 60 that the second joint portion 42 is driven to rotate synchronously.Wherein, it covers
Cylinder axial groove 61 can be multiple, and multiple sleeve axial grooves 61 can be evenly spaced on the inner surface of sleeve 60, second
Joint portion protrusion 421 can be multiple, and multiple second joint portion protrusions 421 are corresponded with multiple sleeve axial grooves 61.
Wherein, as shown in Figure 1, the second joint portion 42 can be with empty set in the first drive shaft 20.Second set in this way connects
Conjunction portion 42 can be conducive to reduce the axial dimension of drive shaft locking system 100, and can be conducive to reduce drive shaft locking
The volume of device 100, in addition, can also be conducive to improve the arrangement reliability at the second joint portion 42 in this way.
Optionally, as shown in figures 1 to 6, the first joint portion 41 and the second joint portion 42 can be accommodated in sleeve 60.
Sleeve 60 can play the role of protecting the first joint portion 41 and the second joint portion 42, and can be to avoid the first engagement as a result,
The lubricating oil at 41 and second joint portion 42 of portion leaks out, and can improve the structural reliability of drive shaft locking system 100.
Wherein, as shown in Figure 1, drive shaft locking system 100 can also include：Elastic device 70,70 elasticity of elastic device
Ground, which is arranged between the second joint portion 42 and sleeve 60 so that the second joint portion 42, to be had to the direction far from the first joint portion 41
The trend of movement.It is understood that when needing to release the lockup state between the first drive shaft 20 and the second drive shaft 30,
Second joint portion 42 is needed far from the first joint portion 41, at this point, braking parts 522 stop the servo-actuated portion 521 of braking, elastic device 70 can
The second joint portion 42 to be driven to be moved to the direction far from the first joint portion 41, so that the second joint portion 42 and first
Joint portion 41 detaches, such first drive shaft, 20 and second drive shaft 30 working condition back to normal.
Preferably, elastic device 70 can be helical spring, and helical spring is set in the first drive shaft 20.In this way
Helical spring arrangement is reliable, and the global reliability of drive shaft locking system 100 is preferable.
As shown in Fig. 2, the first joint portion 41 is arranged and is fixed in the first drive shaft 20, helical spring is located at the first engagement
The outside in portion 41.The structural reliability of the first joint portion 41 and the first drive shaft 20 on the one hand can be improved in this way, on the other hand
The radial space of the first drive shaft 20 can be rationally utilized, the arrangement that can improve helical spring and the first joint portion 41 is reliable
Property.
Optionally, as shown in figures 1 to 6, elastic device 70 can be accommodated in sleeve 60.Sleeve 60 can play receiving
The effect of elastic device 70 can improve the arrangement reliability of elastic device 70 in this way.
A specific embodiment according to the present invention, as shown in Fig. 2, the first joint portion 41 is with multiple circumferentially distributed
First engagement tooth 411, the second joint portion 42 have multiple the second circumferentially distributed engagement teeth 422.It is understood that when the
When one engagement tooth 411 and second engages the cooperation of tooth 422, the first joint portion 41 and the second joint portion 42 engage, multiple by setting
First engagement tooth 411 and multiple second engagement teeth 422, the cooperation that can improve the first joint portion 41 and the second joint portion 42 are reliable
Property.
Optionally, the second joint portion limiting slot can be provided on the second joint portion 42, one end of driving needle 51 is located at the
Two joint portion limiting slots.By setting the second joint portion limiting slot, the second joint portion 42 and one end of driving needle 51 can be improved
Cooperation reliability, the overall work reliability of drive shaft locking system 100 can be improved.
Wherein, there are many arrangements of gear ring 14.
For example, optionally, gear ring 14 has integrally formed annular extension, annular extension forms sleeve 60.In this way
On the one hand gear ring 14 and sleeve 60 connect the manufacture difficulty that reliably, on the other hand can reduce drive shaft locking system 100, can be with
Reduce the cost of drive shaft locking system 100.
Certainly, the present invention is not limited thereto, as shown in Figures 2 and 3, multiple arcs is provided between gear ring 14 and sleeve 60
Connection strap 62, the 62 circumferentially spaced distribution of multiple arcs connection strap, and multiple arcs connection strap 62 respectively with gear ring 14 and
Sleeve 60 is welded and fixed.That is, each arc connection strap 62 can play the role of being fixedly connected with gear ring 14 and sleeve 60,
And connection strap setting camber, its edge with gear ring 14 and sleeve 60 can be caused to be adapted, drive shaft lock can be improved
The overall structure reliability of locking apparatus 100.
As shown in Fig. 2, the first drive shaft 20 is connected with sun gear 11, the second drive shaft 30 is connected with gear ring 14, drives needle
51 wear planet carrier 13.Planet carrier 13 has multiple protrusive boards of circumferentially spaced distribution, and multiple protrusive boards are divided into the first protrusive board 131
With the second protrusive board 132, interlaced arrangement, the first protrusive board 131 are used in the circumferential for multiple first protrusive boards 131 and multiple second protrusive boards 132
In installing planet wheel spindle, the driving needle support holes for supporting driving needle 51 are provided on the second protrusive board 132.In this way in planet carrier
On 13, planet wheel spindle and driving needle 51 are non-interference each other, thereby may be ensured that setting of the driving needle 51 on planet carrier 13 can
By property.
A kind of power-driven system 1000 according to embodiments of the present invention is described below in detail.
As shown in Figure 7 and Figure 8, which can include the drive shaft for vehicle of above-described embodiment
Locking system 100, the first dynamotor D1 and the second dynamotor D2, the first dynamotor D1 and the first drive shaft 20
Transmission, and the first dynamotor D1 outputs power to one in pair of wheels, the second dynamotor D2 and second
Drive shaft 30 is driven, and the second dynamotor D2 outputs power to another in pair of wheels.Work as drive shaft in this way
When 100 the first drive shaft of locking 20 of locking system and the second drive shaft 30, two wheels rotate synchronously, when drive shaft locking system
When 100 non-the first drive shafts of locking 20 and the second drive shaft 30, the first dynamotor D1 and the second dynamotor D2 difference
It works independently to drive corresponding wheel with suitable rotational speed.
Wherein, as shown in fig. 7, in power-driven system 1000, the drive shaft locking system 100 of above-described embodiment can be with
It is applied only in one group of wheel.Be provided between first dynamotor D1 and the near front wheel Z1 first gear c1, second gear c2,
Third gear c3, the 4th gear c4, the 5th gear c5 and the 6th gear c6, wherein, first gear c1 is fixed on the first electronic hair
On the motor shaft of motor D1, second gear c2 and first gear c1 engagements, second gear c2 are also coaxially fixed with third gear c3,
Third gear c3 is engaged with the 4th gear c4, and the 4th gear c4 is fixed in the first drive shaft 20, also solid in the first drive shaft 20
Surely there is the 5th gear c5, the 6th gear c6, the 5th gear c5 and the 6th gear c6 engagement are connected on the semiaxis of the near front wheel Z1, this
The power of the first dynamotor of sample D1 can pass to the near front wheel Z1 by above-mentioned three groups of meshed gears, and certainly, first drives
Moving axis 20 can also play the role of in transmittance process it is corresponding, and between first gear c1 and second gear c2, third tooth
It can play the role of slowing down between wheel c3 and the 4th gear c4 and increase square.
Certainly, the present invention is not limited thereto, as shown in figure 8, in power-driven system 1000, the driving of above-described embodiment
Axis locking system 100 can be applied in two groups of wheels.For example, drive shaft locking system 100 can be two, a drive shaft
Locking system 100 coordinates in the near front wheel Z1 and off-front wheel Y1, and the first dynamotor D1 and the drive shaft locking system
100 the first drive shaft 20 is driven, and the second drive shaft 30 of the second dynamotor D2 and the drive shaft locking system 100 pass
It is dynamic.
Another drive shaft locking system 100 coordinates in left rear wheel Z2 and off hind wheel Y2, and third dynamotor
The first drive shaft 20 of D3 and the drive shaft locking system 100 are driven, the 4th dynamotor D4 and the drive shaft locking system
100 the second drive shaft 30 is driven.
Specific embodiment to be shown in Fig. 1 and combination Fig. 7 below, is described in detail drive shaft according to embodiments of the present invention
The working process and principle of locking system 100.
In vehicle normal straight when driving, the first dynamotor D1 and the second dynamotor D2 individually work,
The controller of vehicle can control the first dynamotor D1 and the second dynamotor D2 in the same direction and synchronized work, left front in this way
Wheel Z1 and off-front wheel Y1 can at the same speed and rotate in same direction.
In vehicle normal turn when driving, controller can control the first dynamotor D1 and the second dynamotor D2
In the same direction and different rotating speeds, for example, when turning left, the rotating speed of the first dynamotor D1 can be less than the second dynamotor D2's
Rotating speed can cause the rotating speed of off-front wheel Y1 to be more than the rotating speed of the near front wheel Z1, realize.
During above-mentioned vehicle normal straight traveling and vehicle normal turn traveling, in the effect of elastic device 70
Under, one end of the driving needle 51 in drive shaft locking system 100 is at the minimum point for the drive surface 523 for being servo-actuated portion 521, this
When, driving needle 51 is in synchronous rotation state with servo-actuated portion 521.
When the stranded skidding of vehicle, driver controls electromagnetic brake energization work, and brake bracket braking brake component is made in this way
The rotating speed of moving part is suppressed, and drives and speed discrepancy is generated between needle 51 and brake component, driving needle 51 is in the drive surface 523 of brake component
Upper slip, driving needle 51 can slide into the position of peak or neighbouring peak from the minimum point of drive surface 523, drive needle
51 move axially to the side at the second joint portion 42, so as to drive needle 51 that the second joint portion 42 can also be driven to move closer to first
Joint portion 41, until the first joint portion 41 and the second joint portion 42 engage, at this point, the first drive shaft 20 and the second drive shaft 30 are same
Step rotation, so as to improve the ability of getting rid of poverty of vehicle.
After vehicle is got rid of poverty, driver can press electromagnetic brake, electromagnetic brake power-off again, and elastic device pushes
Second joint portion 42 is moved axially to the direction far from the first joint portion 41, and in the process, driving needle 51 is with the second joint portion
42 axial movements, one end that driving needle 51 coordinates with drive surface 523 can be gradual from the position of peak or neighbouring peak
Minimum point is slid into, at this point, the second joint portion 42 and the first joint portion 41 are kept completely separate, vehicle can be according to above-mentioned vehicle just
Normal straight-line travelling and vehicle normal turn driving mode continue to travel.
Vehicle according to embodiments of the present invention, the power-driven system 1000 including above-described embodiment.
In the description of this specification, reference term " one embodiment ", " example ", " is specifically shown " some embodiments "
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It is combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the different embodiments or examples described in this specification and the feature of different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (25)
1. a kind of drive shaft locking system for vehicle, which is characterized in that including：
Planetary gear mechanism, the planetary gear mechanism include sun gear, planetary gear, planet carrier and gear ring；
First drive shaft, the second drive shaft and power engagement device, the power engagement device include the first joint portion and second
Joint portion, first drive shaft are connected with the sun gear, and the first drive shaft be also configured to it is synchronous with the first joint portion
Rotation, second drive shaft are connected with the gear ring, and second drive shaft is also configured to synchronous with second joint portion
Rotation；
Joint portion driving device, the joint portion driving device include：Drive needle and driving portion, the driving needle is arranged to can be with
The planet carrier around the sun gear center axis thereof and can planet carrier axial movement relatively, the two of the driving needle
End coordinates respectively with the driving portion and second joint portion, and the driving portion is arranged for that the driving needle is driven to drive
Second joint portion is moved along the axial direction to the direction close to first joint portion, so as to connect second joint portion
Close first joint portion；
Sleeve, the sleeve connection is between the gear ring and second drive shaft, and second joint portion is with the sleeve
It rotates and relatively described sleeve is axially movable；
Elastic device, the elastic device are resiliently arranged between second joint portion and the sleeve so that described second
Joint portion has the trend moved to the direction far from first joint portion.
2. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that the driving portion includes：
Servo-actuated portion, the servo-actuated portion can be with the driving needle rotation, and the servo-actuated portion can be braked, and be set in the servo-actuated portion
Drive surface is equipped with, slip of the needle in the drive surface is driven to make the drive surface by described when the servo-actuated portion is braked
The driving needle is driven along the axial movement, so that second joint portion engages the first joint portion engagement.
3. the drive shaft locking system according to claim 2 for vehicle, which is characterized in that the driving portion also wraps
It includes：
Braking parts, the braking parts are arranged for braking the servo-actuated portion.
4. the drive shaft locking system according to claim 3 for vehicle, which is characterized in that the braking parts are arranged to
Utilize portion servo-actuated described in electromagnetism dynamic braking.
5. the drive shaft locking system according to claim 4 for vehicle, which is characterized in that the driving portion is electromagnetism
Brake, the servo-actuated portion form the brake component of the electromagnetic brake, and the braking parts form the system of the electromagnetic brake
Moving frame.
6. the drive shaft locking system according to claim 2 for vehicle, which is characterized in that servo-actuated portion's empty set exists
In first drive shaft.
7. the drive shaft locking system according to claim 2 for vehicle, which is characterized in that the drive surface is inclined-plane
Or curved surface.
8. the drive shaft locking system according to claim 2 for vehicle, which is characterized in that the drive surface includes：
First segment and second segment, the first segment are connected with the second segment, and the junction of the first segment and the second segment is most
The other end far from the junction of low spot, the first segment and the second segment is peak.
9. the drive shaft locking system according to claim 8 for vehicle, which is characterized in that the servo-actuated portion includes：
Servo-actuated portion's flange of servo-actuated portion's ontology and the annular being arranged on servo-actuated portion's ontology, described in the direction of servo-actuated portion's flange
It drives and is provided with the drive surface on the end face of needle.
10. the drive shaft locking system according to claim 2 for vehicle, which is characterized in that set in the drive surface
Drive surface limiting slot is equipped with, one end of the driving needle is located in the drive surface limiting slot.
11. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that first drive shaft
It is connected with the sun gear, second drive shaft is connected with the gear ring, and the driving needle wears the planet carrier；
The planetary gear is mounted on by planet wheel spindle on the planet carrier, and the driving needle is same portion with the planet wheel spindle
Part.
12. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that first drive shaft
It is connected with the sun gear, second drive shaft is connected with the gear ring, and the driving needle wears the planet carrier；
The planetary gear is mounted on by planet wheel spindle on the planet carrier, and the driving needle is spaced apart with the planet wheel spindle.
13. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that the planet carrier is two
Both sides that are a and being separately positioned on the sun gear, the driving needle wear two planet carriers.
14. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that set on the sleeve
There is sleeve axial groove, the second joint portion protrusion is provided on second joint portion, second joint portion protrusion is arranged on institute
It states in sleeve axial groove, so that second joint portion can be rotated with the sleeve and relatively described sleeve is axially movable.
15. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that second joint portion
Empty set is in first drive shaft.
16. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that first joint portion
It is accommodated in the sleeve with second joint portion.
17. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that the elastic device is
It helical spring and is sleeved in first drive shaft.
18. the drive shaft locking system according to claim 17 for vehicle, which is characterized in that first joint portion
It is arranged and is fixed in first drive shaft, the helical spring is located at the outside at first joint portion.
19. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that the elastic device is received
It is contained in the sleeve.
20. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that first joint portion
With multiple the first circumferentially distributed engagement teeth, second joint portion has multiple the second circumferentially distributed engagement teeth.
21. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that the gear ring has one
Body formed annular extension, the annular extension form the sleeve.
22. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that the gear ring with it is described
Be provided with multiple arcs connection strap between sleeve, the circumferentially spaced distribution of the multiple arc connection strap and respectively with the tooth
Circle and the sleeve weld are fixed.
23. the drive shaft locking system according to claim 1 for vehicle, which is characterized in that
First drive shaft is connected with the sun gear, and second drive shaft is connected with the gear ring, and the driving needle is worn
If the planet carrier；
The planet carrier has multiple protrusive boards of circumferentially spaced distribution, and the multiple protrusive board is divided into the first protrusive board and second convex
Interlaced arrangement, first protrusive board are used to install row in the circumferential for plate, multiple first protrusive boards and multiple second protrusive boards
Spider gear shaft is provided with the driving needle support holes for supporting the driving needle on second cam.
24. a kind of power-driven system, which is characterized in that including：
The drive shaft locking system for vehicle according to any one of claim 1-23；
First dynamotor, first dynamotor are driven with first drive shaft and output power to a pair of of vehicle
One in wheel；
Second dynamotor, second dynamotor are driven with second drive shaft and output power to a pair of of vehicle
Another in wheel.
25. a kind of vehicle, which is characterized in that including power-driven system according to claim 24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226797.2A CN108237904B (en) | 2016-12-27 | 2016-12-27 | Drive shaft locking device, power drive system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226797.2A CN108237904B (en) | 2016-12-27 | 2016-12-27 | Drive shaft locking device, power drive system and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108237904A true CN108237904A (en) | 2018-07-03 |
| CN108237904B CN108237904B (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611226797.2A Active CN108237904B (en) | 2016-12-27 | 2016-12-27 | Drive shaft locking device, power drive system and vehicle |
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| WO2006074679A1 (en) * | 2004-12-24 | 2006-07-20 | Gkn Driveline International Gmbh | Differential transmission |
| CN101519040A (en) * | 2008-05-23 | 2009-09-02 | 北京理工大学 | Double-motor skidproof differential drive axle of electric automobile |
| CN203730692U (en) * | 2013-10-23 | 2014-07-23 | 伊顿公司 | Torque limiting differential mechanism |
| CN204755825U (en) * | 2015-04-28 | 2015-11-11 | 长城汽车股份有限公司 | Differential mechanism and motor vehicle |
| JP2016088406A (en) * | 2014-11-10 | 2016-05-23 | Ntn株式会社 | Differential limiting device of four-wheel drive vehicle |
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|---|---|---|---|---|
| JPS6165941A (en) * | 1984-09-07 | 1986-04-04 | Tochigi Fuji Ind Co Ltd | Transfer device |
| JPS61192949A (en) * | 1985-02-19 | 1986-08-27 | Honda Motor Co Ltd | Planet gear type differential gears |
| US4781078A (en) * | 1987-02-02 | 1988-11-01 | Dana Corporation | Locking differential with electromagnetic actuated clutch |
| US5322484A (en) * | 1992-12-22 | 1994-06-21 | Dana Corporation | Locking differential with clutch activated by electrorheological fluid coupling |
| WO2006074679A1 (en) * | 2004-12-24 | 2006-07-20 | Gkn Driveline International Gmbh | Differential transmission |
| CN101519040A (en) * | 2008-05-23 | 2009-09-02 | 北京理工大学 | Double-motor skidproof differential drive axle of electric automobile |
| CN203730692U (en) * | 2013-10-23 | 2014-07-23 | 伊顿公司 | Torque limiting differential mechanism |
| JP2016088406A (en) * | 2014-11-10 | 2016-05-23 | Ntn株式会社 | Differential limiting device of four-wheel drive vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108237904B (en) | 2021-02-23 |
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