CN207010442U

CN207010442U - A kind of wheel hub motor for automobile

Info

Publication number: CN207010442U
Application number: CN201720798926.9U
Authority: CN
Inventors: 王舸
Original assignee: Jiangsu Paddy Vehicle Technology Co Ltd
Current assignee: Jiangsu Paddy Vehicle Technology Co Ltd
Priority date: 2017-07-04
Filing date: 2017-07-04
Publication date: 2018-02-13
Anticipated expiration: 2027-07-04

Abstract

The utility model discloses a kind of wheel hub motor for automobile, including inner end cap, outer end cap, side wall, motor, decelerator, brake and the transmission main shaft for connecting inner end cap and outer end cap；Outer end cap is provided with the tubular elements of inside end cap direction extension；Motor is provided with cavity；Decelerator is located in the cavity of motor, and on the inside of the tubular elements being arranged on by the way that the bearing of axial force can be born on outer end cap；Brake is located at the outside of inner end cap on housing；Transmission main shaft is connected with the rotor, decelerator and brake of motor respectively, and the motor and brake are located at the input of decelerator.The utility model realizes the output torque for increasing motor and the braking moment of brake, and brake request can also be met by producing less braking moment even if brake, and correspondingly, brake disc can reduce, and such brake disc small volume, light weight, cost are low.

Description

A kind of wheel hub motor for automobile

Technical field

The utility model belongs to driver for vehicle technical field, and in particular to a kind of wheel hub motor for automobile.

Background technology

Wheel hub motor can simplify the drive system of vehicle and the complete vehicle structure of vehicle, improve transmission efficiency, increase chassis The space that can be utilized, complicated Study on Vehicle Dynamic Control is realized, be the ultimate drive form of following electric automobile.But take turns at present Hub motor also faces the problem of some are severe, when reduce volume, quality and increase the contradiction between torque, power, second, How the reliability and environmental suitability of wheel hub motor is improved.Existing wheel hub motor is roughly divided into direct-drive type and with reducing gear Formula, so-called direct-drive type are exactly that the rotor of motor is directly connected by simple structure with wheel rim, and the wheel hub motor of this structure is not Suitable for the occasion of high pulling torque, the occasion for needing high pulling torque, generally require to add the volume meeting of reducing gear, otherwise motor It is very big, very big influence is caused to its applicability, the mode of most original is that directly decelerator is connected with motor, is occurred later Cavity is set in the inside of motor, and most of structure of reductor is arranged in the cavity, how to design reducing gear Position and mounting arrangements, it is the technical problem that this class formation needs most solution to improve drive efficiency and reduce noise；In addition, also The problems such as in the presence of nonspring carried mass is added, torque density is low, is unfavorable for suspension, brakes arrangement, and sealed heat-dissipating is stranded.

Utility model content

In view of the above-mentioned problems, the utility model proposes a kind of wheel hub motor for automobile, by motor and brake The input of decelerator is arranged at, so as to increase the braking moment of the output torque of motor and brake, correspondingly The quality of motor is advantageous to the stability of vehicle so as to reduce the unsprung mass of vehicle needed for can reducing；Again improve electricity The torque density of machine；Brake request can also be met by producing less braking moment even if brake, and correspondingly, brake disc can contract Small, such brake disc small volume, light weight, cost are low, even without booster brake during braking, reduce vehicle cost, reduce Energy consumption, improve braking reliability.

Above-mentioned technical purpose is realized, reaches above-mentioned technique effect, the utility model is achieved through the following technical solutions：

A kind of wheel hub motor for automobile, including housing, motor, decelerator, brake and transmission main shaft；

The housing includes the side wall of inner end cap, outer end cap, connection inner end cap and outer end cap；The outer end cap be provided with to The tubular elements of inner end cap direction extension；

The motor is provided with cavity, and in the space being collectively forming by inner end cap and outer end cap；

The decelerator is located in the cavity of motor, and the outer end cap is arranged on by the bearing that can bear axial force On tubular elements on the inside of；

The brake is located at the outside of inner end cap on housing；

The transmission main shaft is connected with the rotor, decelerator and brake of motor respectively, and the motor and Brake is located at the input of decelerator, is turned with the braking using the output torque and brake of decelerator increase motor Square.

Further, the inner end cap is provided with suspension mount point and/or steering mechanism's mount point；Or in the connection The side wall of end cap and outer end cap is provided with suspension mount point and/or steering mechanism's mount point；Or the outer end cap is provided with and hanged Frame mount point and/or steering mechanism's mount point.

Further, the motor includes stator, rotor field spider and is arranged on cored rotor, the stator Connect the inside sidewalls of inner end cap and outer end cap, the rotor field spider is made up of or common by unilateral plate and tubular elements unilateral plate Composition；When rotor field spider is made up of unilateral plate, unilateral plate is fixed on one end of rotor, and covers the cavity on rotor, unilateral Plate is provided with the through hole for being used for accommodating transmission main shaft；When rotor field spider is made up of unilateral plate and tubular elements, the iron core peace of rotor Mounted in the outer surface of tubular elements, the cavity on unilateral plate covering rotor, and unilateral plate is provided with and is used to accommodate the logical of transmission main shaft Hole.

Further, the motor is induction machine, including stator and cage-type rotor, and the stator is arranged on connection The inside sidewalls of inner end cap and outer end cap, the cage-type rotor include unilateral plate, short-circuited conducting sleeve and at least one circle sliver, the sliver Both ends be connected respectively with short-circuited conducting sleeve and unilateral plate；It is described or the motor includes stator, rotor field spider and permanent magnet Stator is arranged on connection inner end cap and the inside sidewalls of outer end cap, and the rotor field spider is made up of unilateral plate with tubular elements, described Permanent magnet is located at the outer surface of tubular elements, forms the rotor structure of magneto.

Further, when rotor field spider is made up of unilateral plate and tubular elements, tubular elements at least one end is provided with radially outward The flange of extension, to strengthen tubular elements intensity, and meanwhile it is spacing to rotor.

Further, described a kind of wheel hub motor for automobile, in addition to a bearing, when rotor field spider is by unilateral plate When being formed with tubular elements, the bearing is between rotor field spider and the tubular elements of outer end cap, for supporting rotor；When rotor branch When frame is made up of unilateral plate, the bearing is between rotor and the tubular elements of outer end cap.

Further, the tubular elements of the rotor field spider or rotor and the tubular elements of inside end cap direction extension on outer end cap Between be provided with a radial clearance, when rotor field spider or rotor, which produce, radially to be perturbed, gap is eliminated, the tubular of rotor field spider Part or rotor contact with the tubular elements of inside end cap direction extension on outer end cap, limit rotor field spider or rotor further produces footpath To perturbing, after perturbing disappearance, the radial clearance is recovered.

Further, the decelerator includes side board type planet carrier, sun gear, gear ring, engaged with sun gear and gear ring Planetary gear；The sun gear couples with transmission main shaft, transmits the output torque of motor and brake；The gear ring is located at outer On the inside of tubular elements on end cap；The side board type planet carrier passes through the symmetrically arranged first bearing that can bear axial force and second Can bear axial force bearing be arranged on outer end cap on tubular elements inner side, and described first can bear axial force bearing and Second bearing that can bear axial force is located at the both sides of gear ring respectively.

Further, the transmission main shaft sequentially passes through the inner face of side board type planet carrier, rotor field spider and housing, transmission Main shaft one end is supported on by bearing in the centre bore of side board type planet carrier side plate, and the other end of transmission main shaft passes through bearings In the centre bore of the inner end cap of housing；Or one end away from outer face is provided with the tubular elements on the outer face of the housing The side plate parallel with inner end cap, side plate are provided with centre bore, and transmission main shaft one end is supported on the inner end cap of housing by bearing In centre bore, the other end of transmission main shaft passes through in centre bore of the bearings on foregoing side plate.

Further, the gear ring is integrally formed with the tubular elements on outer end cap, the table in the tubular elements on outer end cap Face；Or the tubular elements inner surface on the outer end cap is provided with annular boss, gear ring is pressed into and is fixed on the annular boss.

Further, described a kind of wheel hub motor for automobile, in addition to the first locating part, first locating part It is bonded with the inner ring of the bearing for bearing axial force close to outer end cap, for outer ring and the tooth of the bearing of axial force will can be born The annular boss of circle or the tubular elements inner surface on the outer end cap is close to.

Further, described a kind of wheel hub motor for automobile, in addition to the first locating part, first locating part It is bonded with the inner ring of the bearing for bearing axial force away from outer end cap, for outer ring and the tooth of the bearing of axial force will can be born The annular boss of circle or the tubular elements inner surface on the outer end cap is close to.

Further, described a kind of wheel hub motor for automobile, in addition to the first locating part, the second locating part, Three locating parts and the 4th locating part, the outer ring of first locating part and the bearing for bearing axial force close to outer end cap are pasted Close, second locating part is bonded with the outer ring of the bearing for bearing axial force away from outer end cap, the 3rd locating part with 4th locating part is respectively positioned on planet carrier, and first locating part and the second locating part are used to that the bearing of axial force will can be born Inner ring is close to the 3rd locating part on planet carrier and the 4th locating part respectively.

Further, first locating part or the outer end cap of the second locating part and housing are made of one.

Further, the side plate of outer end cap is along the circumferential direction machined with hole on the housing on the decelerator, for Wheel rim is connected；Or the outside of the side plate of outer end cap is provided with ring flange on the housing on the decelerator, for wheel rim phase Even.

Further, the inner side of the inner end cap is provided with the first cooling passage, and the side wall is provided with the second coolant Passage, the inner side of the outer end cap are provided with the 3rd cooling passage, first cooling passage, the second cooling passage and The connection of three cooling passages cooperatively forms coolant circulation passage, for being radiated to motor.

Further, duct is provided with the stator core of the motor, cooling line is installed in duct, for supplying Coolant is by take away the side wall and/or outer end cap and/or outer end cap of heat, coolant inlet and outlet positioned at housing.

The beneficial effects of the utility model：

(1) decelerator in the utility model reduces the volume of wheel hub motor, is easy in the cavity of motor Installed in wheel rim；And decelerator be by that can bear on the inside of tubular elements that the bearing of axial force is fixed on the outer end cap, when When having the axial external force to act on wheel, the axial force received is shared to going on housing by the bearing of axial force can be born, So as to which the deformation of decelerator or motor part in wheel hub motor will not be caused, the impact resistance of wheel hub motor is improved, significantly Improve safety in utilization and reliability of the present utility model.

(2) motor and brake are arranged at the input of decelerator by the utility model, so as to increase driving The output torque of motor and the braking moment of brake, can correspondingly reduce needed for motor quality so as to reducing the spring of vehicle Lower quality, be advantageous to the stability of vehicle；Again improve the torque density of motor；Turn even if brake produces less braking Square can also meet brake request, and correspondingly, brake disc can reduce, and so as to which brake disc small volume, light weight, cost are low, reduce The unsprung mass of vehicle, even without booster brake during braking, reduce production cost, reduce energy consumption, it is reliable to improve braking Property.

(3) the utility model rationally design decelerator installation site and structure arrangement, so as to greatly improve drive efficiency, Noise is reduced, and nonspring carried mass can be reduced, improve torque density.

(4) the utility model reasonable design structure and mounting means of planet carrier, it is obviously improved the anti-of wheel hub motor Impact, severe road conditions are adapted to, improve the reliability of wheel hub motor.

(5) the utility model has taken into full account vibration and influence of the impact to electric machine structure, by setting a gap to prevent " sweeping thorax " phenomenon damage motor occurs for motor, realizes fail safe function, substantially increases the stability and reliability of motor.

(6) the utility model devises rational radiator structure, can greatly improve heat dispersion of the present utility model, carry The reliability of high wheel hub motor, improve the environmental suitability of wheel hub motor.

Brief description of the drawings

Fig. 1-1 is a kind of one of overall structure diagram of embodiment of the utility model；

Fig. 1-2 is the two of a kind of overall structure diagram of embodiment of the utility model；

Fig. 2-1 is the outer surface schematic diagram of one of the structural representation of inner end cap in a kind of embodiment of the utility model；

Fig. 2-2 is the structural representation of shoulder hole in Fig. 2-1；

Fig. 2-3 is the two of the structural representation of the inner end cap in a kind of embodiment of the utility model；

Fig. 2-4 is the inner surface schematic diagram of one of the structural representation of inner end cap in a kind of embodiment of the utility model；

Fig. 2-5 is the three of the structural representation of the inner end cap in a kind of embodiment of the utility model；

Fig. 3 is the structural representation of the side wall in a kind of embodiment of the utility model；

Fig. 4-1 is one of structural representation of outer end cap in a kind of embodiment of the utility model；

Fig. 4-2 is the inner surface schematic diagram of one of the structural representation of outer end cap in a kind of embodiment of the utility model；

Fig. 4-3 is the two of the structural representation of the outer end cap in a kind of embodiment of the utility model；

Fig. 5-1 is one of structural representation of rotor field spider in a kind of embodiment of the utility model；

Fig. 5-2 is the two of the structural representation of the rotor field spider in a kind of embodiment of the utility model；

Fig. 5-3 is the three of the structural representation of the rotor field spider in a kind of embodiment of the utility model；

Fig. 5-4 is one of structural representation of rotor in a kind of embodiment of the utility model；

Fig. 5-5 is the two of the structural representation of the rotor in a kind of embodiment of the utility model；

Fig. 5-6 is the three of the structural representation of the rotor in a kind of embodiment of the utility model；

Fig. 6 is the structural representation of the stator in a kind of embodiment of the utility model；

Fig. 7-1 is located at the structure of enclosure interior for the motor speed in a kind of embodiment of the utility model or rotary angle transmitter Schematic diagram；

Fig. 7-2 is located at the structure of hull outside for the motor speed in a kind of embodiment of the utility model or rotary angle transmitter Schematic diagram；

Fig. 8 is the structural representation of the board-like planet carrier of bilateral in a kind of embodiment of the utility model；

Fig. 9 is the structural representation of the planet wheel spindle in a kind of embodiment of the utility model；

Figure 10-1 is one of structural representation of gear ring in a kind of embodiment of the utility model；

Figure 10-2 is the two of the structural representation of the gear ring in a kind of embodiment of the utility model；

Figure 11 is the structural representation of the brake disc in a kind of embodiment of the utility model.

Figure 12 is the limit method schematic diagram for the bearing that axial force can be born in a kind of embodiment of the utility model.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, with reference to embodiments, to this Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this practicality It is new, it is not used to limit the utility model.

Application principle of the present utility model is explained in detail below in conjunction with the accompanying drawings.

Embodiment 1

As shown in Fig. 1-1 and 1-2, a kind of wheel hub motor for automobile, including housing 1, motor 2, decelerator 3, Brake 4 and transmission main shaft 5；

The housing 1 includes the side wall 103 of inner end cap 101, outer end cap 102, connection inner end cap 101 and outer end cap 102；Institute State the tubular elements 1021 that outer end cap 102 is provided with the extension of the inside direction of end cap 101；The tubular elements 1021 instead of conventional truck In suspension support effect, supporting suspension, bear automobile load, provide installing space for planetary reduction gear 3；

The motor 2 is provided with cavity, and in the space being collectively forming by inner end cap 101 and outer end cap 102；

The decelerator 3 is located in the cavity of motor 2, and is fixed on by that can bear the bearing of axial force outside described The inner side of tubular elements 1021 on end cap 102, the bearing for bearing axial force is preferably taper roll bearing/angular contact ball axle Hold/deep groove ball bearing etc.；

The brake 4 is located at the outside of inner end cap 101 on housing 1；

The rotor with motor 2, decelerator 3 and brake 4 are connected the transmission main shaft 5 respectively, and the driving electricity Machine 2 and brake 4 are located at the input of decelerator 3, and decelerator 3 is driven using transmission main shaft 5.

In such scheme, motor 2 and brake 4 are arranged to the input of decelerator 3, it is achieved thereby that increase The output torque of motor 2 and the braking moment of brake 4, to produce less braking moment even if brake 4 can also expire Sufficient brake request, correspondingly, brake disc can reduce, and such brake disc small volume, light weight, cost are high, non-so as to reduce Spring carried mass, improve torque density.

Inner end cap 101, outer end cap 102 and side wall 103 described in the utility model embodiment can be split-type designs (i.e. three-chip type), it is coupled between each other by screw/bolt etc.；Inner end cap 101 and side wall 103 can also be integrally formed, or Outer end cap 102 and side wall 103 are integrally formed by person；In a kind of embodiment of the utility model embodiment, described the inner Lid 101, outer end cap 102 and side wall 103 are split-type design, specifically：

As shown in Fig. 2-1~Fig. 2-5, the inner end cap 101 is unilateral plate, and the unilateral plate circumferencial direction is arranged with screw thread Hole 1011, for being connected with the outer end cap 102 on housing 1 and side wall 103；And it is machined with shoulder hole at the center of inner end cap 101 1012, for installing bearing to support transmission main shaft 5, it is additionally operable to that seal, such as sealing ring, felt collar, to realize to axle are installed The positioning of bearing outer-ring and sealing ring；Suspension mount point 1013 at least two is machined with the lateral wall of inner end cap 101 so that whole The small volume of wheel hub motor, especially suitable for kart；Further, according to the actual requirements, the lateral wall of the unilateral plate On be also provided with brake caliper mounting point 1014, cable interface 1015, data line interface 1016, for setting angle sensor Window 1017, lubricating oil gateway 1018 and breathing equipment interface 1019, the breathing equipment interface 1019 are used to connect pressure release The devices such as valve, intake valve or breathing equipment.

As shown in figure 3, the circumferencial direction of the side wall 103 is arranged with screwed hole 1031, for the outer end cap with housing 1 102 are connected with inner end cap 101, further, according to the actual requirements, suspension mount point, electricity are also provided with the side wall 103 Cable interface (not shown), data line interface (not shown), the window for setting angle sensor (do not show in figure Go out), lubricating oil gateway (not shown), breathing equipment interface (not shown), the breathing equipment interface be used for connect Connect the devices such as relief valve, intake valve, breathing equipment.

As shown in Fig. 4-1 and Fig. 4-2, the outer end cap 102 is by the side plate 1022 located at outside and the direction of inside end cap 101 The tubular elements 1021 of extension form；The circumferencial direction of side plate 1022 is arranged with screwed hole 1023, for the inner on housing 1 Lid 101 is connected with side wall 103；Further, according to the actual requirements, it is also provided with suspension on the lateral wall of the side plate 1022 Mount point, cable interface (not shown), data line interface (not shown), the window for setting angle sensor (not shown), lubricating oil gateway (1025), breathing equipment interface (not shown), the breathing equipment interface are used for Connect relief valve, intake valve or breathing equipment etc.；

In order to improve sealing property, the first groove 1026, inner end cap 101 are machined with the inner side outer ring of outer end cap 102 The second groove 1020 is machined with the outer ring of inner side, the circumferencial direction of the left and right sides of side wall 103 is machined with seal groove 1032, coordinate the One groove 1026, the second groove 1020 and seal groove 1032 carry out sealant sealing.

Motor 2 described in the utility model embodiment includes rotor field spider 201, stator 202 and turned with cored Son 203, such as：Magneto (surface-mount type, embedded), reluctance motor, induction machine etc., the stator 201 are arranged on connection Inner end cap and the inner side of the side wall of outer end cap 103, when specifically installing, can be placed with non-magnetic between stator 202 and side wall 103 Material, such as hard rubber, plastics, it can play a part of every magnetic, absorb noise, sealing；The rotor field spider is by unilateral plate structure Collectively constituted with tubular elements into or by unilateral plate, referring to Fig. 5-4；

Temperature sensor is also equipped with stator former, further, in the cavity that motor internal has lubricating oil Temperature sensor is installed, plays detection motor temperature, prevents the effect of overheat.

As shown in fig. 5-1, when rotor field spider 201 is made up of unilateral plate 2011 and tubular elements 2012, its section can be such as " C " Word, the iron core of rotor 203 are arranged on the outer surface of tubular elements 2012, and unilateral plate 2011 covers the cavity on rotor, and unilateral plate 2011 are provided with the through hole for being used for accommodating transmission main shaft 5, and the through hole is preferably disposed at the center of unilateral plate 2011；Further Ground, the outer ring of tubular elements 2012 are machined with flange 2013, have both played a part of strengthening the intensity of tubular elements 2012, and play rotor 203 To positioning action, " C " font rotor field spider is suitable for small machine, and rotor internal cavity itself is little, tighter using C-shaped configuration Gather；As shown in Fig. 5-2, when rotor field spider 201 is made up of unilateral plate 2011 and tubular elements 2012, its section can also be " work " Can there be tubular elements 2012 font, the left and right of the vertical plate between being located therein, and I-shape construction is more stable, and I-shaped turns Submounts are suitable for big motor, because the cavity that big rotor is formed is larger, intermediate supports plate side dress decelerator 3, separately Other parts can be filled in the space of side, the outer ring of tubular elements 2012 is machined with flange 2013, has both played reinforcement tubular elements The effect of 2012 intensity, and positioning action is played to rotor 203；During installation, it can be put between rotor 203 and rotor field spider 201 Non-magnet material, such as hard rubber, plastics are equipped with, can play a part of every magnetic, absorb noise, sealing.

As shown in Fig. 5-3, when rotor field spider 201 is made up of unilateral plate 2011, unilateral plate 2011 is fixed on the one of rotor 203 End, when it is implemented, the iron core of rotor 203 can be carried out into axial punching, connected using rod member, bolt etc. and unilateral plate 2011 Connect, and unilateral plate 2011 covers the cavity on rotor, unilateral plate 2011 is provided with the through hole for being used for accommodating transmission main shaft 5, described Through hole is preferably disposed at the center of unilateral plate 2011；

It can be integral type or separate structure between foregoing rotor field spider 201 and transmission main shaft 5, work as rotor field spider When 201 and transmission main shaft 5 are separate structure, the connected mode of the two can be that spline connection, keyway etc. connect, corresponding hole Splined hole, keyway etc. are processed as, i.e., the torque that motor 2 exports passes to transmission main shaft 5 by rotor field spider 201, is driven Main shaft 5 leads to again passes to sun gear.

Further, in order to strengthen the intensity of rotor field spider 201, at least one on the unilateral plate 2011, tubular elements 2012 There is reinforcement 2014 at place, meanwhile, foregoing reinforcement 2014 also has the function of stirring lubricating oil.

Further, in order to realize that dynamic balancing is adjusted, it is reserved with the unilateral plate 2011 of the rotor field spider for adjusting Dynamically balanced structure, such as the raised points 2015 in Fig. 5-1-~Fig. 5-3, dynamic balancing is adjusted by being ground；

Further, when motor 2 and decelerator 3 do not seal individually, the unilateral plate 2011 of rotor field spider 201 can be with Spoke-like is processed into, there is lightening hole 2016, mitigates weight；Oil duct can also be processed on rotor field spider 201 (in figure not show Go out), be advantageous to the circulation of lubricating oil；When 2 independent lubricating of decelerator 3 and motor, the now unilateral plate of rotor field spider 201 2011 be complete plate, plays a part of isolation.In the utility model embodiment, the lubricating system of decelerator 3：Grease lubrication or Oil lubrication；The lubricating system of motor 2 is oil lubrication.

As shown in Fig. 1-1 and 1-2, described decelerator 3 include side board type planet carrier 301, sun gear 302, gear ring 303, The planetary gear 304 engaged with sun gear 302 and gear ring 303；The sun gear 302 couples with transmission main shaft 5, transmits motor 2 output torque and the braking moment of brake 4；Tubular elements 1021 inner side of the gear ring 303 on outer end cap 102, institute The axle of axial force can be born by the symmetrically arranged first bearing 6 and second that can bear axial force by stating side board type planet carrier 301 16 inner sides of tubular elements 1021 being fixed on outer end cap 102 are held, the described first bearing 6 and second that can bear axial force can be born The bearing 16 of axial force is located at the both sides of gear ring 303 respectively, gear ring 303 is carried out by the two spacing；Described first can bear axle The bearing 16 that axial force can be born to the bearing 6 and second of power can be single row configuration or two-row structure.

The gear of foregoing sun gear 302 can be spur gear, helical gear or people's row gear etc., preferably helical gear, the life-span Long, load force is high, and noise reduction damping, cost in light weight is low, for coupling with transmission main shaft 5, is preferably made of one with transmission main shaft 5 Or it is attached by spline/key etc..

, can be with as shown in figure 8, the side board type planet carrier 301 is the board-like planet carrier of bilateral or unilateral board-like planet carrier It is monoblock type or non-integral type, it is machined with the bearing hole 307 of installation transmission main shaft spring bearing 305, transmission main shaft support Sealing ring 306 is provided between bearing 305 and planet carrier 301, the spring bearing of sun gear is installed in planet carrier, and high is concentric Degree can reduce noise and vibration, be completely eliminated the loss of transmission, on planet carrier close to housing 1 outer end cap 102 side plate 3012 Upper correspondence is machined with the mounting hole 3013 of planet wheel spindle, and the side plate 3012 is along the circumferential direction machined with hole 3014, plays flange The effect of disk, directly it can be connected with wheel rim；Ring flange 3015 can also be set in the outside of the side plate 3012, utilize ring flange It is connected with wheel rim, can is separate structure or integral structure between the side plate 3012 and planet carrier；In order to improve Sealing property, seal is installed between the side plate 3012 and the tubular elements 1021 of outer end cap 102.

When the planet carrier board-like for bilateral of side board type planet carrier 301, the transmission main shaft 5 sequentially passes through the board-like planet of bilateral The inner end cap 101 of frame, rotor field spider 201 and housing 1；The one end of transmission main shaft 5 (is preferably that can bear axle by rolling bearing 305 To the bearing of power, use can bear the bearing of axial force) it is supported in the centre bore 307 of the board-like planet carrier side plate of bilateral；Transmission The other end of main shaft 5 is by bearings in the center of the inner end cap 101 of housing 1；The bearing at transmission main shaft both ends can be equal The double-row bearing of left and right axial force can be born using the bearing or one of use that can bear axial force, another Bearing is random.

When side board type planet carrier 301 is unilateral board-like planet carrier, the tubular elements on the outer end cap 102 of the housing 1 One end away from outer face is provided with the side plate 1027 (see Fig. 4-3) parallel with inner end cap 101 on 1021, during side plate 1027 is provided with Heart hole, the one end of transmission main shaft 5 are supported in the centre bore of inner end cap 101 of housing 1 by rolling bearing, transmission main shaft 5 it is another One end passes through in centre bore of the bearings on the side plate 1027.

During installation, side board type planet carrier 301 by a pair of bearings that can bear axial force, as angular contact ball bearing (it is single-row, Biserial), taper roll bearing (single-row, biserial) etc., be supported on the inwalls of the tubular elements 1021 of the outer end cap 102 of foregoing housing 1 In so that the bearing and side board type planet carrier 301, gear ring 303 that can bear axial force have high axiality.In addition, foregoing can Bear the bearing of axial force and can either bear axial load and can enough to bear radial load, meet the condition of wheel hub motor work, Therefore this mounting means is taken to save traditional hub bearing.More specifically, transmission main shaft 5 sequentially passes through side board type row Carrier 301, rotor field spider 201 and inner end cap 101；The one end of transmission main shaft 5 is supported on side board type planet carrier 301 by rolling bearing In the centre bore of side plate, rolling bearing inner ring is positioned by the shaft shoulder of transmission main shaft 5, and housing washer is formed by endoporus shoulder hole Boss positioning；The other end of transmission main shaft 5 is by bearings in the centre bore of inner end cap 101, and bearing outer ring is by the inner The boss positioning processed in lid centre bore, bearing inner race are determined by the boss at the rotor field spider center being enclosed on transmission main shaft 5 Position.

The gear of the planetary gear 304 can be spur gear, helical gear or people's row gear etc., preferably helical gear, long lifespan, Load force is high, noise reduction damping, and cost in light weight is low；It is preferred that three planetary gears 304, transmission stability are good；Further, planetary gear Bearing is installed between 304 and planet wheel spindle 3041, wears and generates heat to reduce, such as needle bearing, cylinder roller bearing；Before Stating bearing has two bearer rings：Inner ring or outer ring；Or only inner ring；Or only place needle roller without bearer ring；It is in addition, described At least one groove 3042 is provided with planet wheel spindle 3041, lubricant such as lubricating grease is placed with groove 3042, for the lubrication of bearing, It is specifically shown in Fig. 9.

As shown in Figure 10-1~Figure 10-2, the gear of the gear ring 303 can be spur gear, helical gear or people's row gear Deng preferred helical gear, long lifespan, load force is high, noise reduction damping, and cost in light weight is low；On the gear ring 303 and outer end cap 102 Tubular elements 1021 be integrally formed, the inner surface of tubular elements 1021 on outer end cap 102, or on the outer end cap 102 The inner surface of tubular elements 1021 is provided with annular boss 1028, and gear ring 303 is pressed into and is fixed on the annular boss 1028；Further Ground, in order to improve the fastness of press fitting, axially small raised line can also be along the circumferential direction distributed on the periphery of gear ring 303 3031, so as to limit relative rotation of the ring gear 303 with the corresponding inwall of tubular elements 1021 by small raised line 3031, meanwhile, cylinder The inwall of shape part 1021 is correspondingly arranged on axially small recessed bar, can also be extruded during press fitting by the small raised line 3031 of ring gear Come；Coupling for gear ring 303 and the inwall of tubular elements 1021 can also be further reinforced by way of screw thread installation, on gear ring 303 Provided with screwed hole 3032, reduce axial force to displacement caused by gear ring 303.

As shown in figure 11, the brake 4 is brake disc, it is preferable that its inner side is set using the fan blade shape axially dried Meter, disc rotation is dried in vehicle travel process, is advantageous to motor radiating；Specifically, brake disc is arranged on planetary reduction gear The input of device 3, in this way, the braking moment of brake 4 is amplified by decelerator 3, brake disc produces less braking and turned Square can also meet brake request, and correspondingly, brake disc can reduce, and such brake disc small volume, light weight, cost are high.

Between transmission main shaft 5 and inner end cap 101 in the utility model embodiment, transmission main shaft 5 and side board type planet carrier Bearing is equipped between 301 mounting holes, between the inwall of tubular elements 1021 of the periphery of planet carrier and outer end cap 102, preferably is selected from Sealed bearings；Between transmission main shaft 5 and inner end cap 101, between transmission main shaft 5 and planet carrier sun gear bearing mounting hole 307, profit Seal is equipped with lubricating oil adding mouth.

In order to improve stability, a kind of described wheel hub motor for automobile, in addition to the first locating part 7；Described One locating part 7 is bonded with the inner ring of the bearing 6 for bearing axial force close to outer end cap 102, for that will can bear axial force Bearing is close to gear ring 303 or with the annular boss 1028 of the inner surface of tubular elements 1021 on the outer end cap 102, is applied to Assembly method from left to right；It is relative corresponding to the small one end of the bearing openings that axial force can be born in Fig. 1, i.e., " back-to-back " peace Dress.

Further, described a kind of wheel hub motor for automobile, in addition to the second locating part, the 3rd locating part and Four locating parts；The locating part of first locating part 7 and second is respectively arranged on the bearing for bearing axial force close to outer end cap 102 6 both sides；3rd locating part and the 4th locating part are respectively arranged on the both sides of another bearing 16 that can bear axial force；Its In, first locating part 7 can be the boss with the side plate integrated design of close outer end cap 102 on decelerator 3；Or it is The back-up ring part (bearing positioning ring) being connected with the side plate on decelerator 3 close to outer end cap 102.When it is implemented, close to outer end cap The outer ring of 102 bearing 6 for bearing axial force is spacing by the boss on decelerator 3, and inner ring is by gear ring or retainer ring spacing；It is remote The outer ring of the bearing for bearing axial force of outer end cap 102 is by gear ring or retainer ring spacing, and inner ring is by the shaft shoulder/on planet carrier or logical It is spacing to cross installation circlip.In the another embodiment of the utility model embodiment, first locating part 7 with it is remote The lateral wall fitting of the bearing 16 for bearing axial force of outer end cap 102, for the bearing and gear ring 303 of axial force will can be born Or the annular groove of the inner surface of tubular elements 1021 on the outer end cap 102 is close to, suitable for assembly method from right to left；It is right Should can be born in Fig. 1 axial force bearing openings it is small one end it is relative, i.e., it is " back-to-back " installation.

As shown in figure 12, described a kind of wheel hub motor for automobile, in addition to the first locating part 17, the second locating part 18th, the 3rd locating part 19 and the 4th locating part 20, first locating part 17 and the axle for bearing axial force close to outer end cap 6 outer ring fitting is held, second locating part 18 is bonded with the outer ring of the bearing 16 for bearing axial force away from outer end cap, institute State the 3rd locating part 19 and the 4th locating part 20 is located on planet carrier, the locating part 180 of the first locating part 17 and second is used for The inner ring that will can bear the bearing (6,16) of axial force is tight with the 3rd locating part 19 on planet carrier and the 4th locating part 20 respectively Patch；It is relative corresponding to the big one end of taper roll bearing opening in Figure 12, and " face-to-face " installation situation.

In a kind of embodiment of the utility model embodiment, the tubular elements of second locating part 18 and outer end cap 1021 are made into integration, and the 3rd locating part 19 and the 4th locating part 20 are the boss on planet carrier.(the 3rd locating part and the 4th spacing Part can also be circlip)

In a kind of embodiment of the utility model embodiment, the wheel hub motor for automobile also turns including motor Speed or rotary angle transmitter 8, it is arranged on the outside (referring to Fig. 7-2) of wheel hub motor or internal (referring to Fig. 7-1), the motor The motion parts 801 of rotating speed or rotary angle transmitter couple with transmission main shaft 5 or rotor field spider 201 or rotor, its stationary part 802 are divided to be arranged in the inner end cap 101 of housing 1, wire exports via foregoing cable data line interface.

Embodiment 2

The present embodiment and the difference of embodiment 1 are：The motor includes rotor field spider 201, stator 202 and permanent magnetism Iron 205, the stator 202 are arranged on the inner side of side wall 103 of connection inner end cap and outer end cap, and the rotor field spider 201 is by one side Plate 2011 forms with tubular elements 2012, and the permanent magnet 205 is located at the outer surface of tubular elements 2012, forms the rotor of magneto Structure, referring specifically to Fig. 5-5.

Or the motor is induction machine, including stator 202 and cage-type rotor 204, the stator 202 are arranged on Connect the inner side of side wall 103 of inner end cap and outer end cap, the cage-type rotor 204 includes unilateral plate 2041, short-circuited conducting sleeve 2042 and extremely Few circle sliver 2043, the both ends of the sliver 2043 are connected with short-circuited conducting sleeve 2042 and unilateral plate 2041 respectively；Referring specifically to figure 5-6。

Embodiment 3

Based on embodiment 1 or 2 in order to improve heat dispersion, can by individually or collocation using following three kinds of schemes come Realize, specifically：

The first scheme is：

As shown in Fig. 2-3, Fig. 3, Fig. 4-1, the outer surface of the side plate of the outer end cap 102 is provided with the radiating ribs of fin 9/ Piece/reinforcement, the outer surface of the inner end cap 101 are machined with 10/ radiation rib of fin/reinforcement；Outside the side wall 103 Surface is provided with fin/radiation rib/reinforcement, and this scheme can also improve the intensity of housing 1；

Second scheme is：

As shown in Fig. 2-4, Fig. 3, Fig. 4-2, the inner side of the inner end cap 101 is provided with the first cooling passage 11, the side Wall 103 is provided with the second cooling passage 12, and the inner side of the outer end cap 102 is provided with the 3rd cooling passage 13, and described first Cooling passage 11, the second cooling passage 12 connect with the 3rd cooling passage 13 and cooperatively form coolant circulation passage, use Radiated in motor 2；Or the inner side of the inner end cap 101 is provided with the first cooling passage 11, the side wall 103 The second cooling passage 12 is provided with, first cooling passage 11 connects with the second cooling passage 12 and cooperatively forms cooling Liquid circulation canal, for being radiated to motor 2；Or the inner side of the outer end cap 102 is provided with the 3rd cooling passage 13, the side wall 103 is provided with the second cooling passage 12, and the 3rd cooling passage 13 and the second cooling passage 12 connect It is logical to cooperatively form coolant circulation passage, for being radiated to motor 2.

The third scheme is：

As shown in fig. 6, being machined with duct in the iron core of the stator, cooling line 2021 is installed, for cooling in duct But liquid is by taking away heat, coolant inlet and outlet can be arranged in the side wall 103 of housing 1, can also be in housing 1 On outer end cap 102 or inner end cap 101.

Embodiment 4

Because the rotor in embodiment 1-3 is equivalent to vacantly rotating, in order to provide support to rotor, prevent rotor from existing Occur radially to perturb during rotation and cause stator and rotor to contact and produce " sweeping thorax ", based on embodiment 1-3, one kind of the present embodiment is real Apply in mode, a kind of described wheel hub motor for automobile, in addition to a pair of bearings 14, when rotor field spider 201 is by unilateral plate 2011 with tubular elements 2012 form when, the bearing 14 is located between rotor field spider 201 and the tubular elements 1021 of outer end cap 102, For supporting rotor；When rotor field spider 201 is made up of unilateral plate 2011, the bearing 14 is located at the tubular of rotor and outer end cap Between part 1021.

In the another embodiment of the present embodiment, when rotor field spider 201 is by 2012 groups of unilateral plate 2011 and tubular elements Cheng Shi, a radial clearance inwardly is provided between the tubular elements 1021 of end cap direction extension on the tubular elements 2011 and outer end cap, when Rotor field spider 201 produces gap when radially perturbing and is eliminated, the tubular elements 2012 of rotor field spider and inside end cap side on outer end cap Contacted to the tubular elements 1021 of extension, limitation rotor field spider 201, which further produces, radially to be perturbed, after perturbing disappearance, between the radial direction Gap is recovered；

When rotor field spider 201 is made up of unilateral plate 2011, rotor and the tubular that inwardly end cap direction extends on outer end cap A radial clearance is provided between part 1021, gap is eliminated when rotor, which produces, radially to be perturbed, rotor and inboard end on outer end cap The tubular elements 1021 of lid direction extension are contacted, and limitation rotor, which further produces, radially to be perturbed, after perturbing disappearance, radial clearance △ Recover；For preventing rotor occurs radially to perturb when rotated from causing stator and rotor to contact and produce " sweeping thorax ".

Its with it is identical with embodiment 1-3.

Embodiment 5

The difference of the present embodiment and embodiment 1-4 is：Set in the connection inner end cap 101 and the side wall of outer end cap 102 There is suspension mount point 15 so that wheel hub motor of the present utility model can be applied to full-sized car, referring specifically to Fig. 2-1 and Fig. 3.

Remaining is identical with embodiment 1-4.

The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model Claimed scope is by appended claims and its equivalent thereof.

Claims

A kind of 1. wheel hub motor for automobile, it is characterised in that：Including housing, motor, decelerator, brake and transmission Main shaft；

The housing includes the side wall of inner end cap, outer end cap, connection inner end cap and outer end cap；The outer end cap is provided with inboard end The tubular elements of lid direction extension；

The motor is provided with cavity, and in the space being collectively forming by inner end cap and outer end cap；

The decelerator is located in the cavity of motor, is arranged on by the bearing that can bear axial force on the outer end cap On the inside of tubular elements；

The brake is located at the outside of inner end cap on housing；

The transmission main shaft is connected with the rotor, decelerator and brake of motor respectively, and the motor and braking Device is located at the input of decelerator, to utilize the braking moment of the output torque of decelerator increase motor and brake.
A kind of 2. wheel hub motor for automobile according to claim 1, it is characterised in that：The inner end cap is provided with outstanding Frame mount point and/or steering mechanism's mount point；Or the connection inner end cap and the side wall of outer end cap are provided with suspension mount point And/or steering mechanism's mount point；Or the outer end cap is provided with suspension mount point and/or steering mechanism's mount point.
A kind of 3. wheel hub motor for automobile according to claim 1, it is characterised in that：The motor includes fixed Son, rotor field spider and with cored rotor, the stator are arranged on connection inner end cap and the inside sidewalls of outer end cap, described turn Submounts are made up of unilateral plate or collectively constituted by unilateral plate with tubular elements；It is unilateral when rotor field spider is made up of unilateral plate Plate is fixed on one end of rotor, and covers the cavity on rotor, and unilateral plate is provided with the through hole for being used for accommodating transmission main shaft；When turn When submounts are made up of unilateral plate and tubular elements, the iron core of rotor is arranged on the outer surface of tubular elements, and unilateral plate is covered on rotor Cavity, and unilateral plate is provided with and is used to accommodate the through hole of transmission main shaft.
A kind of 4. wheel hub motor for automobile according to claim 1, it is characterised in that：The motor is sensing Motor, including stator and cage-type rotor, the stator are arranged on connection inner end cap and the inside sidewalls of outer end cap, and the cage modle turns Attached bag includes unilateral plate, short-circuited conducting sleeve and at least one circle sliver, and the both ends of the sliver are connected with short-circuited conducting sleeve and unilateral plate respectively；Or The motor includes stator, rotor field spider and permanent magnet, and the stator is arranged on connection inner end cap and the side wall of outer end cap Inner side, the rotor field spider are made up of unilateral plate with tubular elements, and the permanent magnet is located at the outer surface of tubular elements, form Permanent Magnet and Electric The rotor structure of machine.
A kind of 5. wheel hub motor for automobile according to claim 3 or 4, it is characterised in that：When rotor field spider is by list When side plate and tubular elements form, tubular elements at least one end is provided with the flange to extend radially outwardly, to strengthen tubular elements intensity, simultaneously It is spacing to rotor.
A kind of 6. wheel hub motor for automobile according to claim 3 or 4, it is characterised in that：Also include a bearing, when When rotor field spider is made up of unilateral plate and tubular elements, the bearing is used between rotor field spider and the tubular elements of outer end cap Support rotor；When rotor field spider is made up of unilateral plate, the bearing is between rotor and the tubular elements of outer end cap.
A kind of 7. wheel hub motor for automobile according to claim 3 or 4, it is characterised in that：The rotor field spider Be provided with a radial clearance between the tubular elements of inside end cap direction extension on tubular elements or rotor and outer end cap, when rotor field spider or Person's rotor produces gap when radially perturbing and is eliminated, and the tubular elements or rotor of rotor field spider prolong with inside end cap direction on outer end cap The tubular elements contact stretched, limits rotor field spider or rotor is further produced and radially perturbed, and after perturbing disappearance, the radial clearance is extensive It is multiple.
8. according to a kind of wheel hub motor for automobile described in claim 1, it is characterised in that：The decelerator includes side Board-like planet carrier, sun gear, gear ring, the planetary gear engaged with sun gear and gear ring；The sun gear couples with transmission main shaft, passes Pass the output torque of motor and brake；The gear ring is on the inside of the tubular elements on outer end cap；The side board type planet The bearing that frame can bear axial force by the symmetrically arranged first bearing that can bear axial force and second is arranged on outer end cap Tubular elements inner side, and described first can bear the bearing of axial force and the second bearing that can bear axial force is located at tooth respectively The both sides of circle.
A kind of 9. wheel hub motor for automobile according to claim 8, it is characterised in that：The transmission main shaft passes through successively The inner face of side board type planet carrier, rotor field spider and housing is worn, transmission main shaft one end is supported on side board type planet carrier by bearing In the centre bore of side plate, the other end of transmission main shaft is by bearings in the centre bore of the inner end cap of housing；

Or one end away from outer face is provided with the side plate parallel with inner end cap, side on the tubular elements on the outer face of the housing Plate is provided with centre bore, and transmission main shaft one end is supported on by bearing in the centre bore of the inner end cap of housing, transmission main shaft it is another One end passes through in centre bore of the bearings on foregoing side plate.
A kind of 10. wheel hub motor for automobile according to claim 8, it is characterised in that：The gear ring and outer end cap On tubular elements be integrally formed, the tubular elements inner surface on outer end cap；Or the tubular elements inner surface on the outer end cap Provided with annular boss, gear ring is pressed into and is fixed on the annular boss.
A kind of 11. wheel hub motor for automobile according to claim 10, it is characterised in that：It is spacing also to include first Part, first locating part is bonded with the inner ring of the bearing for bearing axial force close to outer end cap, for that can bear axial direction It is close to the annular boss of the tubular elements inner surface on gear ring or the outer end cap outer ring of the bearing of power.
A kind of 12. wheel hub motor for automobile according to claim 10, it is characterised in that：It is spacing also to include first Part, first locating part is bonded with the inner ring of the bearing for bearing axial force away from outer end cap, for that can bear axial direction It is close to the annular boss of the tubular elements inner surface on gear ring or the outer end cap outer ring of the bearing of power.
A kind of 13. wheel hub motor for automobile according to claim 10, it is characterised in that：It is spacing also to include first Part, the second locating part, the 3rd locating part and the 4th locating part, first locating part close to outer end cap with bearing axial force Bearing outer ring fitting, second locating part is bonded with the outer ring of the bearing for bearing axial force of remote outer end cap, institute State the 3rd locating part and the 4th locating part is respectively positioned on planet carrier, first locating part and the second locating part are used to bear The inner ring of the bearing of axial force is close to the 3rd locating part on planet carrier and the 4th locating part respectively.
A kind of 14. wheel hub motor for automobile according to claim 13, it is characterised in that：First locating part or The outer end cap of the locating part of person second and housing is made of one.
A kind of 15. wheel hub motor for automobile according to claim 8, it is characterised in that：It is close on the decelerator The side plate of outer end cap is along the circumferential direction machined with hole on housing, for being connected with wheel rim；Or close to housing on the decelerator The outside of the side plate of upper outer end cap is provided with ring flange, for being connected with wheel rim.
A kind of 16. wheel hub motor for automobile according to claim 1, it is characterised in that：The inner side of the inner end cap Provided with the first cooling passage, the side wall is provided with the second cooling passage, and the inner side of the outer end cap is provided with the 3rd cooling Liquid passage, first cooling passage, the second cooling passage and the connection of the 3rd cooling passage cooperatively form coolant and followed Ring passage, for being radiated to motor.
A kind of 17. wheel hub motor for automobile according to claim 1 or 14, it is characterised in that：The motor Stator core in be provided with duct, cooling line is installed in duct, for for coolant by take away heat, coolant Entrance and exit is located at the side wall and/or outer end cap and/or outer end cap of housing.