CN108274988A - Wheel side power drive system with dynamic shock sucking function - Google Patents
Wheel side power drive system with dynamic shock sucking function Download PDFInfo
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- CN108274988A CN108274988A CN201710009927.5A CN201710009927A CN108274988A CN 108274988 A CN108274988 A CN 108274988A CN 201710009927 A CN201710009927 A CN 201710009927A CN 108274988 A CN108274988 A CN 108274988A
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- China
- Prior art keywords
- motor
- box portion
- wheel
- gear
- drive system
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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
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
-
- 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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/18—Steering knuckles; King pins
-
- 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
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
Abstract
A kind of wheel side power drive system includes：Motor (1)；The gearbox (2) of passing power between motor (1) and wheel semiaxis (5), the gearbox (2) has at least two-stage gear, wherein, motor (1) is fixed on the first box portion of carrying first order gear of gearbox (2)；Knuckle (15) for implementing to turn to wheel；And elastic absorbing element (20), its first end is connected in the first tie point with knuckle (15), second end is connected in the second tie point with the first box portion so that a part for motor (1) and at least quality of the first box portion constitutes dynamic absorber quality.
Description
Technical field
This application involves a kind of wheel side power drive systems with dynamic shock sucking function, are easy and vehicle conventional suspension system
It unites combined.
Background technology
Plug-in electric or hybrid vehicle may include the power drive system of dispersion installation, to realize to each wheel
Be operated alone.Distributed power drive system includes installation or wheel side mount type motor in driving wheel.Distributed power drive system
The advantages of be that power chain is short, transmission efficiency is compact-sized etc..Also, each power drive system can with independent control,
So that each power drive system can quickly be adjusted driving force or brake force, so as to improve vehicle dynamic property.In addition, point
Torque vector control may be implemented in driving wheel from control, to improve cornering stiffnesses.
Side installation is installed usually in driving wheel or taken turns to big quality motor, thus unsprung mass significantly increases, this leads to vehicle
Proportional imbalance between sprung mass and unsprung mass, drivability, especially vertical degradation.It reduces under effective spring
One effective way of quality is that dynamic vibration absorber is added on wheel.Patent document CN102555770A propose using motor as
The quality of dynamic vibration absorber is equipped with therebetween the spring-dampers of dynamic vibration absorber wherein using two-stage gearbox.
The application being not concerned in above-mentioned document in various types of suspensions.When the wheel side with this dynamic vibration absorber
When mount type drive system is installed in existing conventional suspension, meeting between side mount type drive system and Multi-link suspension is taken turns
There are many interference.For example, since motor center axis is close radially with central wheel axis, cause in knuckle
Between trailing arm, between motor and damper, between motor and lower control arm, it is likely to interfere.
Invention content
The application is intended to avoid interfering when Direct wheel drives system is installed to existing conventional vehicles suspension and have simultaneously
Effect inhibits the increase of vehicle unsprung mass.
For this purpose, according to the one side of the application, a kind of wheel side power drive system with dynamic shock sucking function is provided,
It includes：Motor；The gearbox of passing power between motor and wheel semiaxis, the gearbox have at least two-stage variable-speed motor
Structure, wherein motor is connected with first order gear and is fixed on the first case of the carrying first order gear of gearbox
On body portion；Knuckle for implementing to turn to wheel；And elastic absorbing element, first end is in the first tie point and turns
It is connected to section, second end is connected in the second tie point with the first box portion so that motor and at least the first box portion
Quality a part constitute dynamic absorber quality.
According to a kind of embodiments possible, the quantity of the elasticity absorbing element be it is multiple, the of each elasticity absorbing element
One tie point and/or the second tie point are located at different radially and/or axially positions.
According to a kind of embodiments possible, the position of the first tie point of at least one elasticity absorbing element less than its second
The position of tie point, the first tie point of also at least one elastic absorbing element is higher than its second tie point.
According to a kind of embodiments possible, the position of each elasticity absorbing element is arranged to, above and below wheel is relative to vehicle body
When mobile, one or some elastic absorbing element elongations, while another or some elastic absorbing elements shorten.
According to a kind of embodiments possible, jackshaft constitutes the output end and second level gear of first order gear
Input terminal, the motor shaft of motor is arranged in that side of the separate semiaxis of jackshaft so that the diameter between motor shaft and semiaxis
It is more than the radial distance between jackshaft and semiaxis to distance.
It according to a kind of embodiments possible, is seen along the axial direction of wheel, the central axis of motor shaft and the center of jackshaft
The angle between the line between the central axis of line and jackshaft and the central axis of semiaxis between axis is obtuse angle or the straight angle.
According to a kind of embodiments possible, the gearbox has single box structure, including first box portion
With the second box portion of carrying second level gear, the first and second box portions are integrated；Motor and entire speed change
The degree of freedom that there are one case tools rotates around semiaxis relative to knuckle, motor and entire gearbox are outstanding by elastic absorbing element
It is hung on knuckle.
According to a kind of embodiments possible, the gearbox has double body structures, including first box portion and
The second box portion of second level gear is carried, the second box portion is fixed together with knuckle；Jackshaft constitutes the
There are one enclose for the input terminal of the output end and second level gear of level-one gear, motor and first box portion tool
The degree of freedom rotated relative to the second box portion and knuckle around jackshaft, motor and first box portion pass through elasticity
Absorbing element hangs on knuckle.
According to a kind of embodiments possible, by by each between first box portion and the second box portion
The swivel that constitutes of tubulose position be connected, jackshaft passes through the swivel, and the first box portion and the second case
Bearing and sealing element are equipped between the respective tubular position of body portion.
According to a kind of embodiments possible, additional elasticity is equipped between first box portion and the second box portion
Absorbing element.
According to a kind of embodiments possible, the first order gear includes first gear pair, second level gear
Including second gear pair；The first gear pair and/or second gear centering are equipped with radial between motor and semiaxis for increasing
The idle gear of distance.
According to the application, elastic absorbing element is arranged between knuckle and gear box, provides sufficient sky
Between come arrange elastic absorbing element and take turns side power drive system other components, increase wheel side power drive system layout spirit
Activity can be arranged in the position that do not interference with conventional suspension system to take turns side power drive system.In addition, entire gearbox
Or a part and motor for gearbox has the degree of freedom rotated in limited amplitude, to constitute dynamic vibration absorber structure,
The increase that restrained effectively vehicle unsprung mass improves the dynamic property of vehicle.
Description of the drawings
The aforementioned and other aspects of the application will more completely be managed by the detailed description done with reference to the accompanying drawings
Solution, wherein：
Fig. 1 is the schematic layout figure according to a kind of wheel side power drive system of embodiments possible of the application；
Fig. 2 be wheel side power drive system in Fig. 1 in an axial direction made by schematic layout figure；
Fig. 3 is the schematic layout figure according to the wheel side power drive system of another embodiments possible of the application；
Fig. 4 be wheel side power drive system in Fig. 3 in an axial direction made by schematic layout figure.
Specific implementation mode
The feasible embodiment party of the wheel side power drive system with dynamic shock sucking function of the application is described with reference to the accompanying drawings
Formula.It may be noted that attached drawing provided herein is only exemplary, rather than any restrictions are constituted to scope of the present application.In order to
Certain features are highlighted, the various pieces in attached drawing are not necessarily drawn to scale, and some structures are schematically illustrated with chain-dotted line,
Also certain structures are omitted without showing.
A kind of wheel side with dynamic shock sucking function of embodiments possible according to the application is schematically illustrated in Fig. 1
Power drive system.Each of vehicle driving wheel is respectively equipped with such a wheel side power drive system, wherein close to driving
Wheel is arranged in the output rotary motion of the motor 1 of wheel face and torque passes to wheel by gearbox 2, and thus driving should
Wheel rotates.Wheel and its wheel side power drive system are mounted in suspension system.
The gearbox 2 is single box-type gearbox, i.e. gear box is structure as a whole, and interior two-stage speed change is (usually all
To slow down) mechanism.Motor 1 is fixed on gear box.
Gear box carries the semiaxis 5 of motor shaft 3, jackshaft 4 and wheel.Motor shaft 3 limits the central shaft of motor 1
Line, and extended in gear box from motor 1, for the rotary motion of motor 1 and torque to be input in gearbox 2.
Semiaxis 5 limits the central axis of wheel, and is stretched out from gear box.Jackshaft 4 is located in gear box.
It supports the first driving gear 6 on motor shaft 3, the first driven gear 7 and the second sliding tooth is support on jackshaft 4
8 are taken turns, the second driven gear 9 is support on semiaxis 5.
First driving gear 6 is engaged with the first driven gear 7, constitutes the first order gear of gearbox 2.Second driving
Gear 8 is engaged with the second driven gear 9, constitutes the second level gear of gearbox 2.These gears are all located at gear box
In.Second babinet of the first box portion of the carrying first order gear of gear box and carrying second level gear
Part is integrated.
Gear shaft 3 constitute first order gear input terminal, jackshaft 4 constitute first order gear output end and
The input terminal of second level gear, semiaxis 5 constitute the output end of second level gear.
For jackshaft 4, motor shaft 3 is arranged in the side far from semiaxis 5 so that between motor shaft 3 and semiaxis 5
Radial distance be more than radial distance between jackshaft 4 and semiaxis 5.As shown in Fig. 2, the axis in wheel looks up, motor shaft 3
Central axis O1 and the central axis O2 of jackshaft 4 between line and jackshaft 4 central axis O2 and semiaxis 5 central shaft
The angle [alpha] between line between line O3 is obtuse angle or the straight angle, i.e., 90 °<α≤180°.This point can be described as double reduction machine
It is distributed at obtuse angle or the straight angle between structure.In this way, can increase between motor 1 and central wheel axis it is radial away from
From that is, motor 1 is arranged far from central wheel axis radially, to avoid motor 1 and coupled gearbox 2 and the vehicle
The central axis of wheel and the suspension system arrangement (not shown) interference near zone.
In order to enable having enough radial distances between motor 1 and central wheel axis, gear 8 can be driven second
Idle gear 10 is set between the second driven gear 9, as shown in the figure.Certainly, alternatively or additionally measure, can also be
Idle gear is set between one driving gear 6 and the first driven gear 7.
Semiaxis 5 is connected to wheel hub 11, and wheel hub 11 then supports wheel rim 12, such as wheel rim 12 is fixed to wheel by bolt 13
Hub 11.Wheel hub 11 rotates together with semiaxis 5.In addition, also supporting brake disc 14 on wheel hub 11.
Semiaxis 5 rotatably passes through the knuckle 15 of wheel, and knuckle 15 is used to implement to turn to wheel.Knuckle 15 is logical
It crosses bearing 16 and is set on the axle sleeve 17 being fixed together with semiaxis 5.It supports braking components 18 on knuckle 15, such as stops
Vehicle clamps.The braking components 18 can be fixed to by bolt 19 on knuckle 15.
In addition, between gearbox 2 and knuckle 15, it is equipped with elastic absorbing element 20.In an example shown, elasticity is inhaled
The element 20 that shakes is linear, and includes mainly spring and damper；Certainly, various other forms used in the art
Elastic absorbing element can be used here.
The first end of elastic absorbing element 20 is connected to knuckle 15, and second end is connected on gearbox 2.In this way, motor 1
With gearbox 2 together resilient suspension on knuckle 15, used to which a part for the quality of motor 1 and gearbox 2 serves as absorbing
Quality.Motor 1 and gearbox 2 constitute a dynamic shock absorption system with elastic absorbing element 20 as a result,.Motor 1 and speed change
There are one the degree of freedom for carrying out back rotation a little around central wheel axis (i.e. the central axis of semiaxis 5) for the tool of case 2.
Vehicle when driving, wheel up-down vibration by the impact of roughness pavement.In this process, 1 He of motor
Gearbox 2 rotates repeatedly a little around central wheel axis, to by making elastic absorbing element 20 absorb vibrational energy.This
Sample can improve the dynamic property of vehicle, including ABS, TCS, ESP and torque vector control etc..In addition, motor 1 and change
A part for the quality of fast case 2 becomes sprung mass, helps to adjust the ratio between vehicle sprung mass and unsprung mass, suppression
The increase for having made vehicle unsprung mass, to be further improved drivability, especially vertical performance.
By being arranged elastic absorbing element 20 between knuckle and the babinet of gearbox 2, sufficient space is provided
Come arrange elastic absorbing element 20 and take turns side power drive system other components, to be easy to avoid each of existing suspension system
Part so that wheel side power drive system is easy to be integrated with existing suspension system.
In the axial direction of wheel, gearbox 2 between wheel and motor 1, i.e., gearbox 2 be located at wheel axis it is inside
Side, and motor 1 is located at the axially inner side of gearbox 2, as shown in Figure 1.In gearbox 2, with 1 associated first speed change of motor
Mechanism is located at the axially inner side with 5 associated second gear of semiaxis.In this way, motor 1 and gearbox 2 occupy in wheel as possible
The smaller space of heart near axis, to further avoid motor 1 and coupled first order gear and the wheel
Suspension system arrangement (not shown) interference in central axis and near zone.
It is appreciated that dynamic shock absorption system may include more than one elastic absorbing element 20, each elasticity absorbing member
The first end of part 20 can be connected in same tie point A on knuckle 15, and the second end of each elastic absorbing element 20 is not
Same tie point B1, B2 ... is connected on gear box (as shown in Figure 2).Alternatively, the first end of each elasticity absorbing element 20
It can be connected to knuckle 15 in different tie points, and the second end of each elastic absorbing element 20 is connected in identical tie point
To gear box.Alternatively, the first end of each elasticity absorbing element 20 can be connected to knuckle 15 in different tie points, and
Also the different tie point of each leisure is connected to gear box to the second end of each elasticity absorbing element 20.Each elasticity absorbing element 20
The design of the link position at both ends should make, when wheel is moved up and down relative to vehicle body, each elasticity absorbing element 20 is assisted each other
It functions with adjusting.Different tie point mentioned here refers to that their radially and/or axially position is different.
For example, according to a kind of embodiments possible, the height of tie point of each elasticity absorbing element 20 on gear box
Degree is both less than them in knuckle 15 or relative to the tie point A on 15 fixed component of knuckle.
For another example, according to another embodiments possible, one (or some) elasticity absorbing element 20 is on gear box
The height of tie point B1 be more than it in knuckle 15 or relative to the tie point A on 15 fixed component of knuckle, in addition one
The height of tie point B2 of a (or some) elasticity absorbing elements 20 on gear box is less than it in knuckle 15 or opposite
Tie point A on 15 fixed component of knuckle, thus when wheel is moved up and down relative to vehicle body, (or some) bullet
Property absorbing element 20 extend, another (or some) elasticity absorbings element 20 shortens.
Other feasible elastic 20 quantity of absorbing element and link position can also be designed according to concrete structure and needs
Out.
The wheel with dynamic shock sucking function of another embodiments possible according to the application is schematically illustrated in Fig. 3
Side power drive system.The function of the wheel side power drive system is similar with shown in Fig. 1.It is arranged in wheel side close to driving wheel
The output rotary motion and torque of the motor 1 in face pass to wheel by gearbox 2, and the wheel is thus driven to rotate.
The gearbox 2 is double box-type gearboxes, i.e. gear box includes two box portions, i.e. the first box portion
21 and second box portion 22, for carrying two-stage speed change (being usually all to slow down) mechanism.
Motor 1 is fixed on the first box portion 21.Between first box portion 21 and the second box portion 22 by by
The swivel 23 that their own tubulose position is constituted is connected so that the first box portion 21 can be opposite around swivel 23
It is rotated in the second box portion 22.Swivel 23 by the first box portion 21 and the second box portion 22 respective tubular position
It constitutes, and includes bearing 24 between the first box portion 21 and the respective tubular position of the second box portion 22 and close
Sealing 25.Second box portion 22 is fixed on knuckle 15, such as passes through bolt 27.
Between the first box portion 21 and knuckle 15, it is equipped with elastic absorbing element 20.In an example shown, elastic
Absorbing element 20 is linear, and includes mainly spring and damper；Certainly, various other forms used in the art
Elastic absorbing element can use here.The first end of elastic absorbing element 20 is connected to knuckle 15, and second end is connected to
On first box portion 21.
By being arranged elastic absorbing element 20 between knuckle and the first box portion 21, sufficient space is provided
Come arrange elastic absorbing element 20 and take turns side power drive system other components, to be easy to avoid each of existing suspension system
Part is easy to be integrated with existing suspension system.
As optional feature, it can arrange that additional elasticity is inhaled between the first box portion 21 and the second box portion 22
Shake element 26.The first end of elastic absorbing element 26 is connected to the second box portion 22, and second end is connected to the first box portion
21.Elastic absorbing element 26 can be linear or twist mode, and the quantity of elastic absorbing element 26 can be one or more
It is a.
First box portion 21 carries motor shaft 3, and the second box portion 22 carries semiaxis 5, and jackshaft 4 passes through rotation
Connector 23 extends between the first box portion 21 and the second box portion 22.Jackshaft 4 and swivel 23 are having the same
Central axis.
It supports the first driving gear 6 on motor shaft 3, the first driven gear 7 and the second sliding tooth is support on jackshaft 4
8 are taken turns, the second driven gear 9 is support on semiaxis 5.
The first driving gear 6 in the first box portion 21 is engaged with the first driven gear 7, constitutes gearbox 2
First order gear.The second driving gear 8 in the second box portion 22 is engaged with the second driven gear 9, is constituted and is become
The second level gear of fast case 2.
Gear shaft 3 constitute first order gear input terminal, jackshaft 4 constitute first order gear output end and
The input terminal of second level gear, semiaxis 5 constitute the output end of second level gear.
For jackshaft 4, motor shaft 3 is arranged in the side far from semiaxis 5 so that between motor shaft 3 and semiaxis 5
Radial distance be more than radial distance between jackshaft 4 and semiaxis 5.As shown in figure 4, the axis in wheel looks up, motor shaft 3
Central axis O1 and the central axis O2 of jackshaft 4 between line and jackshaft 4 central axis O2 and semiaxis 5 central shaft
The angle [alpha] between line between line O3 is the obtuse angle even straight angle, to increase the central wheel axis that motor 1 is limited with semiaxis 5
Between radial distance, i.e. motor 1 is arranged far from central wheel axis radially, to avoid motor 1 and coupled
First order gear is interferenceed with the suspension frame structure (not shown) in the central axis of the wheel and near zone.
In order to enable having enough radial distances between motor 1 and central wheel axis, gear 8 can be driven second
Idle gear 10 is set between the second driven gear 9, as shown in the figure.Certainly, alternatively or additionally measure, can also be
Idle gear is set between one driving gear 6 and the first driven gear 7.
Semiaxis 5 is connected to wheel hub 11, and wheel hub 11 then supports wheel rim 12, such as wheel rim 12 is fixed to wheel by bolt 13
Hub 11.Wheel hub 11 rotates together with semiaxis 5.In addition, also supporting brake disc 14 on wheel hub 11.
Semiaxis 5 rotatably passes through knuckle 15.Knuckle 15 is set in by bearing 16 and is fixed together with semiaxis 5
Axle sleeve 17 on.Support braking components 18, such as braking clamp on knuckle 15.The braking components 18 can be solid by bolt 19
Determine onto knuckle 15.
Motor 1 and the first box portion 21 together by elastic 20 resilient suspension of absorbing element on knuckle 15, to
A part for the quality of motor 1 and the first box portion 21 serves as the quality of absorbing.Motor 1 and the first box portion as a result,
21 constitute a dynamic shock absorption system with elastic absorbing element 20 (and presumable elastic absorbing element 26).1 He of motor
There are one the degree of freedom for carrying out back rotation a little around the central axis of jackshaft 4 for first box portion 21 tool.Add additional bullet
Property absorbing element 26 can increase the flexibility of dynamic shock absorption system design.
Likewise, it is appreciated that dynamic shock absorption system may include more than one elastic absorbing element 20, they can be as
Embodiment in prior figures 1,2 is arranged like that.
Vehicle when driving, wheel up-down vibration by the impact of roughness pavement.In this process, 1 He of motor
First box portion 21 rotates repeatedly a little around the central axis of jackshaft 4, to by make elastic absorbing element 20 (with
And presumable elastic absorbing element 26) absorb vibrational energy.In this way, the dynamic property of vehicle can be improved.In addition, motor 1
Become sprung mass with a part for the quality of the first box portion 21 and first order gear, helps to adjust vehicle spring
The ratio improved quality between unsprung mass, it is suppressed that the increase of vehicle unsprung mass, to be further improved drivability,
Especially vertical performance.
In the axial direction of wheel, gearbox 2 between wheel and motor 1, i.e., gearbox 2 be located at wheel axis it is inside
Side, and motor 1 is located at the axially inner side of gearbox 2, as shown in Figure 3.In gearbox 2, be fixed together with motor 1
One box portion 21 is located at the axially inner side for the second box portion 22 being fixed together with semiaxis 5.In this way, motor 1 and first
Box portion 21 occupies central wheel axis smaller space nearby as possible, to further avoid motor 1 and coupled
First box portion 21 is interferenceed with the suspension frame structure (not shown) in the central axis of the wheel and near zone.
Fig. 3, the other aspects of embodiment shown in 4 and Fig. 1, embodiment is similar or identical shown in 2, is not repeated
Narration.
Although the gearbox 2 in previously described example is two-stage gearbox, according to specific needs, gearbox 2 also may be used
To be the gearbox of three or more level.
As can be seen that according to the application, the driving motor and gearbox (or part of gearbox) of wheel are endowed
The degree of freedom rotated in limited amplitude a so that part for their quality constitutes the matter of the dynamic shock absorption system of the wheel
Amount, to absorb the vibrational energy that wheel is generated by the effect on ground using elastic absorbing element, so as to improve vehicle
Dynamic property.Further, since a part for the quality of motor and gearbox (or part of gearbox) becomes matter on spring
Amount, therefore the ratio between vehicle sprung mass and unsprung mass can be adjusted, it is suppressed that the increase of vehicle unsprung mass, to
Improve drivability, especially vertical performance.
In addition, by by the setting of the elastic absorbing element of dynamic shock absorption system in knuckle and gear box (or babinet
A part) between, provide sufficient space to arrange elastic absorbing element and take turns other components of side power drive system,
The flexibility for increasing wheel side power drive system layout, mutually conflicts, this makes so as to avoid with each section of existing suspension system
The installation that side power drive system must be taken turns is more easy, and need not be transformed to existing suspension system.For example, the application
Wheel side power drive system is easy to be applied in combination with traditional multi link formula or double fork arm type equal suspensions, without causing phase to each other
Mutually interference.
In addition, the driving motor of wheel is arranged to far as possible from central wheel axis, so as to further avoid
Mutually conflict with each section of existing suspension system.
Although describing the application herein with reference to specific embodiment, scope of the present application is not limited to shown
Details.Without departing from the basic principle of the application, various modifications can be made for these details.
Claims (11)
1. a kind of wheel side power drive system, including：
Motor (1)；
The gearbox (2) of passing power between motor (1) and wheel semiaxis (5), the gearbox (2) become at least two-stage
Fast mechanism, wherein motor (1) is connected with first order gear and is fixed on the carrying first order variable-speed motor of gearbox (2)
On first box portion of structure；
Knuckle (15) for implementing to turn to wheel；And
Elastic absorbing element (20), first end are connected in the first tie point with knuckle (15), and second end is in the second tie point
It is connected with the first box portion so that a part for motor (1) and at least quality of the first box portion constitutes power and inhales
It shakes quality.
2. as described in claim 1 wheel side power drive system, wherein it is described elasticity absorbing element (20) quantity be it is multiple,
The first tie point and/or the second tie point of each elasticity absorbing element (20) are located at different radially and/or axially positions.
3. wheel side power drive system as claimed in claim 2, wherein the first connection of at least one elasticity absorbing element (20)
The position of point is less than its second tie point, and the position of the first tie point of also at least one elastic absorbing element (20) is higher than it
Second tie point.
4. wheel side power drive system as claimed in claim 2 or claim 3, wherein the position of each elasticity absorbing element (20) is arranged to,
When wheel is moved up and down relative to vehicle body, one or some elastic absorbing elements (20) elongations, while another or some
Elastic absorbing element (20) is shortened.
5. wheel side power drive system according to any one of claims 1 to 4, wherein jackshaft (4) constitutes first order speed change
The motor shaft (3) of the input terminal of the output end and second level gear of mechanism, motor (1) is arranged in the separate of jackshaft (4)
That side of semiaxis (5) so that radial distance between motor shaft (3) and semiaxis (5) be more than jackshaft (4) and semiaxis (5) it
Between radial distance.
6. wheel side power drive system as claimed in claim 5, wherein seen along the axial direction of wheel, the central shaft of motor shaft (3)
Line between line (O1) and the central axis (O2) of jackshaft (4) in the central axis (O2) and semiaxis (5) of jackshaft (4)
Angle (α) between line between mandrel line (O3) is obtuse angle or the straight angle.
7. such as wheel side according to any one of claims 1 to 6 power drive system, wherein the gearbox (2) has single case
Body structure includes the second box portion of first box portion and carrying second level gear, the first and second babinets
Part is integrated；
There are one the degree of freedom rotated relative to knuckle (15) around semiaxis (5), electricity for motor (1) and entire gearbox (2) tool
Machine (1) and entire gearbox (2) hang on knuckle (15) by elastic absorbing element (20).
8. such as wheel side according to any one of claims 1 to 6 power drive system, wherein the gearbox (2) has double babinets
Structure, including first box portion (21) and the second box portion (22) for carrying second level gear, the second babinet
Partly (22) are fixed together with knuckle (15)；
Jackshaft (4) constitutes the input terminal of the output end and second level gear of first order gear, motor (1) and described
There are one surround what jackshaft (4) was rotated relative to the second box portion (22) and knuckle (15) for first box portion (21) tool
Degree of freedom, motor (1) and first box portion hang on knuckle (15) by elastic absorbing element (20).
9. wheel side power drive system as claimed in claim 8, wherein first box portion (21) and the second box portion
(22) it is connected by the swivel (23) being made of their own tubulose position between, jackshaft (4) passes through the rotation
Connector (23), and bearing (24) is equipped between the first box portion (21) and the respective tubular position of the second box portion (22)
With sealing element (25).
10. wheel side power drive system as claimed in claim 8 or 9, wherein first box portion (21) and the second babinet
Additional elastic absorbing element (26) is partly equipped between (22).
11. the wheel side power drive system as described in any one of claims 1 to 10, wherein the first order gear packet
First gear pair is included, second level gear includes second gear pair；
The first gear pair and/or second gear centering are equipped with for increasing radial distance between motor (1) and semiaxis (5)
Idle gear (10).
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| CN201710009927.5A CN108274988B (en) | 2017-01-06 | 2017-01-06 | Wheel-side electric driving system with dynamic vibration absorption function |
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| CN201710009927.5A CN108274988B (en) | 2017-01-06 | 2017-01-06 | Wheel-side electric driving system with dynamic vibration absorption function |
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| CN108274988A true CN108274988A (en) | 2018-07-13 |
| CN108274988B CN108274988B (en) | 2022-12-06 |
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| CN201710009927.5A Active CN108274988B (en) | 2017-01-06 | 2017-01-06 | Wheel-side electric driving system with dynamic vibration absorption function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977609A (en) * | 2021-04-19 | 2021-06-18 | 北京理工大学 | Integrated power system with steering function, power assembly and vehicle |
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| CN108274988B (en) | 2022-12-06 |
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