CN207368805U

CN207368805U - A kind of wheel hub motor

Info

Publication number: CN207368805U
Application number: CN201720798893.8U
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: 2018-05-15
Anticipated expiration: 2027-07-04

Abstract

The utility model discloses a kind of wheel hub motor, including housing, driving motor, deceleration unit, brake unit and transmission main shaft；Housing includes inner end cap, outer end cap, side wall；Outer end cap is equipped with the tubular element of inside end cap direction extension；Driving motor is equipped with cavity, and in the space being collectively forming by inner end cap and outer end cap；On the inside of the tubular element that deceleration unit is installed on the outer end cap by that can bear the bearing of axial force；Brake unit is arranged on the outside of outer end cap on housing, is connected with the output terminal of deceleration unit, or is connected with wheel hub, and wheel hub is connected with the output terminal of deceleration unit；Transmission main shaft is arranged between rotor and the deceleration unit of driving motor.Deceleration unit is arranged in the cavity of driving motor by the utility model, bearing by that can bear axial force is fixed on the inside of the tubular element on outer end cap, when there is axial external force to act on wheel, it can bear the bearing of axial force to share the axial force being subject to going on housing, so that the deformation of deceleration unit or motor part in wheel hub motor will not be caused.

Description

A kind of wheel hub motor

Technical field

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

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, realizes complicated Study on Vehicle Dynamic Control, is 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 large torque, the occasion for needing large torque, generally requires 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 deceleration unit is connected with motor, is occurred later Cavity is set in the inside of motor, and most of structure of gear reducer is installed in the cavity, how to design reducing gear Position and mounting arrangements, be technical problem that this class formation needs most solution to improve drive efficiency and reduce noise；In addition, The problems such as also in the presence of nonspring carried mass is added, torque density is low, is unfavorable for suspension, braking system 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, it is not necessary to sets column, is stressed directly, it will Deceleration unit is arranged in the cavity of driving motor, the volume of wheel hub motor is reduced, easy to be installed in wheel rim；And by that can hold It is fixed on by the bearing of axial force on the inside of the tubular element on the outer end cap, when there is axial external force to act on wheel, by It can bear the bearing of axial force to share received axial force to going on housing, so that deceleration unit in wheel hub motor will not be caused Or the deformation of motor part, substantially increase the safety in utilization and reliability of the utility model.

Realize above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions：

A kind of wheel hub motor, including housing, driving motor, deceleration unit, brake unit 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 equipped with to The tubular element of inner end cap direction extension；

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

The deceleration unit is installed on the outer end in the cavity of driving motor by the bearing that can bear axial force On the inside of the tubular element covered；

The brake unit be arranged on housing on outer end cap outside, it is connected with the output terminal of deceleration unit, or with wheel Hub is connected, and the wheel hub is connected with the output terminal of deceleration unit；

The transmission main shaft is arranged between rotor and the deceleration unit of driving motor, to utilize deceleration unit increase driving electricity The output torque of machine.

Further, the inner end cap is equipped 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 equipped with suspension mount point and/or steering mechanism's mount point；Or the outer end cap is equipped with suspension Mount point and/or steering mechanism's mount point.

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

Further, the driving motor be induction machine, including stator and cage-type rotor, and the stator, which is installed on, to be connected 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 conducting bar, the conducting bar Both ends be connected respectively with short-circuited conducting sleeve and unilateral plate；It is described or the driving motor includes stator, rotor field spider and permanent magnet Stator is installed on connection inner end cap and the inside sidewalls of outer end cap, and the rotor field spider is made of unilateral plate with tubular element, described Permanent magnet is arranged on the outer surface of tubular element, forms the rotor structure of magneto.

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

Further, a kind of wheel hub motor, further includes a bearing, when rotor field spider is by unilateral plate and tubular element group Cheng Shi, the bearing are used to support rotor between rotor field spider and the tubular element of outer end cap；When rotor field spider is by unilateral plate During composition, the bearing is between rotor and the tubular element of outer end cap.

Further, the tubular element of the rotor field spider or rotor and the tubular element of inside end cap direction extension on outer end cap Between be equipped 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 are contacted with the tubular element of inside end cap direction extension on outer end cap, limit rotor field spider or rotor further produces footpath To perturbing, after perturbing disappearance, which recovers.

Further, the deceleration unit includes side board type planet carrier, sun gear, gear ring, engages with sun gear and gear ring Planetary gear；The sun gear couples with transmission main shaft, transmits driving motor output torque；The gear ring is arranged on outer end cap On the inside of tubular element；The side board type planet carrier can bear axis by the symmetrically arranged first bearing that can bear axial force and second The inner side of the tubular element on outer end cap is installed on to the bearing of power, and described first can bear the bearing of axial force and second and can hold It is located at the both sides of gear ring respectively by the bearing of axial force.

Further, the transmission main shaft sequentially passes through side board type planet carrier, rotor field spider, and transmission main shaft one end passes through axis Hold and be supported in the centre bore of side board type planet carrier side plate, the other end of transmission main shaft by bearings housing inner end cap Centre bore in；Or on the tubular element on the outer end face of the housing away from outer end face one end be equipped with it is parallel with inner end cap Side plate, side plate are equipped 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 master The other end of axis passes through in centre bore of the bearings on foregoing side plate.

Further, the gear ring is integrally formed with the tubular element on outer end cap, the table in the tubular element on outer end cap Face；Or the tubular element inner surface on the outer end cap is equipped with annular convex platform, gear ring is pressed into and is fixed on the annular convex platform.

Further, a kind of wheel hub motor, further includes the first locating part, first locating part and close outer end The inner ring fitting of the bearing for bearing axial force of lid, for outer ring and the gear ring or described of the bearing of axial force will can be born The annular convex platform of tubular element inner surface on outer end cap is close to.

Further, a kind of wheel hub motor, further includes the first locating part, first locating part and remote outer end The inner ring fitting of the bearing for bearing axial force of lid, for outer ring and the gear ring or described of the bearing of axial force will can be born The annular convex platform of tubular element inner surface on outer end cap is close to.

Further, a kind of wheel hub motor, further include the first locating part, the second locating part, the 3rd locating part and 4th locating part, first locating part are bonded with the outer ring of the bearing for bearing axial force close to outer end cap, and described 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 and the 4th locating part position In on planet carrier, first locating part and the second locating part are used for the inner ring and planet carrier for the bearing that will can bear axial force The third and fourth locating part be close to.

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

Further, the inner side of the inner end cap is equipped with the first cooling passage, and the side wall is equipped with the second coolant Passage, the inner side of the outer end cap are equipped 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 radiating to driving motor.

Further, duct is equipped with the stator core of the driving 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) column is not required in the wheel hub motor in the utility model, is stressed directly, and deceleration unit is arranged on driving motor by it Cavity in, the volume of wheel hub motor is reduced, easy to be installed in wheel rim；And retarder is by that can bear the bearing of axial force It is fixed on the inside of the tubular element on the outer end cap, when there is axial external force to act on wheel, by axial force can be born Bearing shares received axial force to going on housing, so that deceleration unit in wheel hub motor or motor part will not be caused Deformation, improves the impact resistance of wheel hub motor, substantially increases the safety in utilization and reliability of the utility model.

(2) the utility model will drive motor to be arranged on the input terminal of deceleration unit, it is achieved thereby that increasing driving electricity The output torque of machine, producing less output torque even if driving motor can also meet that driving requires, and can correspondingly reduce institute The quality of motor is needed to be conducive to the stability of vehicle so as to reduce the unsprung mass of vehicle；The torque for again improving motor is close Degree.

(3) the utility model rationally designs the installation site and structure arrangement of deceleration unit, so as to greatly improve driving effect Rate, reduce noise, improves torque density.

(4) the utility model reasonable design structure and mounting means of planet carrier, is obviously improved the anti-of wheel hub motor Impact, adapts to severe road conditions, improves 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 occurs for motor, realizes fail safe function, substantially increases the stability and reliability of motor.

(6) the utility model forms cooling by setting heat sink on housing, and using outer end cap, side wall and inner end cap Liquid circulation canal, can greatly improve the heat dissipation performance of the utility model；Further, it is machined with hole in the iron core of the stator Road, installs cooling line in duct, for for coolant by taking away heat, improving the reliability of 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 structure diagram of inner end cap in a kind of embodiment of the utility model；

Fig. 2-2 is the structure diagram of stepped hole in Fig. 2-1；

Fig. 2-3 is the second 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 structure diagram of inner end cap in a kind of embodiment of the utility model；

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

Fig. 3 is the structure diagram of the side wall in a kind of embodiment of the utility model；

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

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

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

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

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

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

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

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

Fig. 6 is the structure diagram of the stator in a kind of embodiment of the utility model；

Fig. 7-1 is arranged on 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 arranged on 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 structure diagram of the board-like planet carrier of bilateral in a kind of embodiment of the utility model；

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

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

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

Figure 11 is the structure diagram 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 to make the purpose of the utility model, technical solutions and advantages 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.

The application principle of the 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, including housing 1, driving motor 2, deceleration unit 3, brake unit 4 With 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 element 1021 that outer end cap 102 is equipped with the extension of inside 101 direction of end cap；The tubular element 1021 instead of conventional truck In suspension support effect, supporting suspension, bears automobile load, provides installation space for planetary reduction unit 3；

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

The deceleration unit 3 in the cavity of driving motor 2, and by can bear the bearing of axial force be fixed on it is described The inner side of tubular element 1021 on outer end cap 102, the bearing for bearing axial force is preferably taper roll bearing/angular contact ball Bearing/deep groove ball bearing etc.；

The brake unit 4 is arranged on the outside of outer end cap 102 on housing 1, it is connected with the output terminal of deceleration unit 3, or Person is connected with wheel hub, and the wheel hub is connected connected with the output terminal of deceleration unit 3；Specifically：The brake unit 4 is consolidated with wheel hub Fixed connection or brake unit 4 are directly fixedly connected with 3 output shaft of deceleration unit；When brake unit 4 is connected with wheel hub, braking It is to carry ring flange on unit 4, is bolted；When the output shaft of brake unit 4 and deceleration unit 3 is directly connected to, Brake unit 4 is equipped with centre bore, is connected with the output shaft of deceleration unit 3 by spline, key etc.；

The transmission main shaft 5 is arranged between rotor and the deceleration unit 3 of driving motor 2, to be driven using the increase of deceleration unit 3 The output torque of dynamic motor 2.

In such scheme, driving motor 2 is arranged on the input terminal of deceleration unit 3, it is achieved thereby that increasing driving electricity The output torque of machine 2.

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), is coupled by screw/bolt etc. between each other；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 one side 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 stepped hole at 101 center of inner end cap 1012, for installing bearing to support transmission main shaft 5, it is additionally operable to installation seal, such as sealing ring, felt collar, to realize to axis 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 Wheel hub motor it is small, especially suitable for kart；Further, according to the actual requirements, the lateral wall of the unilateral plate On be also provided with cable interface 1015, data line interface 1016, window 1017, lubricating oil for setting angle sensor go out Entrance 1018, breathing equipment interface 1019, the breathing equipment interface 1019 are used for relief valve, intake valve and breathing equipment etc. It is connected.

As shown in figure 3, the circumferencial direction of the side wall 103 is arranged with threaded 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 entrance (not shown), breathing equipment interface (not shown), the breathing equipment interface be used for Relief valve, intake valve and breathing equipment etc. are connected.

As shown in Fig. 4-1 and Fig. 4-2, the outer end cap 102 is by 101 direction of the side plate 1022 arranged on outside and inside end cap The tubular element 1021 of extension forms；1022 circumferencial direction of side plate is arranged with threaded 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 entrance (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 performance, the first groove 1026, inner end cap 101 are machined with the 102 inner side outer ring of outer end cap 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 fluid sealant sealing.

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

Temperature sensor is also equipped with stator former, further, in cavity of the motor internal there are 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 of unilateral plate 2011 and tubular element 2012, its section can be such as " C " Word, the iron core of rotor 203 are installed on the outer surface of tubular element 2012, and unilateral plate 2011 covers the cavity on rotor, and unilateral plate 2011 are equipped 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, 2012 outer ring of tubular element are machined with flange 2013, have not only played the role of strengthening 2012 intensity of tubular element, but also play rotor 203 To positioning action, " C " font rotor field spider is suitable for small machine, 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 of unilateral plate 2011 and tubular element 2012, its section can also be " work " Can there be tubular element 2012 in 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 deceleration unit 3, Other parts can be filled in the space of opposite side, 2012 outer ring of tubular element is machined with flange 2013, has both played reinforcement tubular element 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 the role of every magnetic, absorb noise, sealing.

As shown in Fig. 5-3, when rotor field spider 201 is made 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 to axial punching, is connected using rod piece, bolt etc. and unilateral plate 2011 Connect, and unilateral plate 2011 covers the cavity on rotor, unilateral plate 2011 is equipped 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 connection mode of the two can be that spline connection, keyway etc. connect, corresponding hole Splined hole, keyway etc. are processed as, that is, the torque for driving motor 2 to export 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 one side plate 2011, tubular element 2012 There is reinforcing rib 2014 at place, meanwhile, foregoing reinforcing rib 2014 also has the function of to stir 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 driving motor 2 and deceleration unit 3 not to seal individually, the unilateral plate 2011 of rotor field spider 201 can To be processed into spoke-like, there is lightening hole 2016, mitigate weight；Processing oil duct (can also it not show in figure on rotor field spider 201 Go out), be conducive to the circulation of lubricating oil；When deceleration unit 3 and driving 2 independent lubricating of motor, the one side of rotor field spider 201 at this time Plate 2011 is complete plate, plays the role of isolation.In the utility model embodiment, the lubricating system of deceleration unit 3：Fat moistens Sliding or oil lubrication；The lubricating system for driving motor 2 is oil lubrication.

As shown in Figure 1, the deceleration unit 3 includes side board type planet carrier 301, sun gear 302, gear ring 303 and the sun The planetary gear 304 that wheel 302 and gear ring 303 engage；The sun gear 302 couples with transmission main shaft 5, transmits the defeated of driving motor 2 Go out torque；The gear ring 303 is arranged on the inner side of tubular element 1021 on outer end cap 102, and the side board type planet carrier 301 is by symmetrical The bearing 16 that the first bearing 6 and second that can bear axial force set can bear axial force is fixed on cylinder on outer end cap 102 The inner side of shape part 1021, the bearing 16 that the described first bearing 6 and second that can bear axial force can bear axial force are located at tooth respectively The both sides of circle 303, carry out gear ring 303 by the two spacing；Described first bearing 6 and second that can bear axial force can bear axis Can be single row configuration or two-row structure to the bearing 16 of power.

The gear of foregoing sun gear 302 can be spur gear, helical gear or people's row gear etc., preferably helical gear, the service life Long, load force is high, and noise reduction damping, light-weight cost 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 equipped 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 outside of the side plate 3012 sets ring flange 3015, using ring flange with Brake unit connects, specifically：The side plate 3012 is provided outside the axis with ring flange, transmits the output torque of deceleration unit 3, The wheel hub of flange shaft and wheel connects, and band motor car wheel rotates；Can be separate structure between the side plate 3012 and planet carrier, It can be integral structure；In order to improve sealing performance, it is provided between the side plate 3012 and the tubular element 1021 of outer end cap 102 Seal.

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；5 one end of transmission main shaft (is preferably that can bear axis 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 element on the outer end cap 102 of the housing 1 One end away from outer end face is equipped with the side plate 1027 (see Fig. 4-3) parallel with inner end cap 101 on 1021, during side plate 1027 is equipped with Heart hole, 5 one end of transmission main shaft 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 can bear the bearing of axial force by a pair, as angular contact ball bearing (it is single-row, Biserial), taper roll bearing (single-row, biserial) etc., be supported on the inner wall of the tubular element 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 concentricity.In addition, foregoing can Bear the bearing of axial force and can either bear axial load that radial load can be born again, 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；5 one end of transmission main shaft 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 stepped 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 sleeved 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 light-weight cost 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 light-weight cost is low；On the gear ring 303 and outer end cap 102 Tubular element 1021 be integrally formed, 1021 inner surface of tubular element on outer end cap 102, or on the outer end cap 102 1021 inner surface of tubular element has annular convex platform 1028, and gear ring 303 is pressed into and is fixed on the annular convex platform 1028；Into one Step ground, in order to improve the fastness of press fitting, can also along the circumferential direction be distributed axial small raised line on the periphery of gear ring 303 3031, so that relative rotation of the ring gear 303 with corresponding 1021 inner wall of tubular element is limited by small raised line 3031, meanwhile, cylinder 1021 inner wall of shape part is correspondingly arranged on axial 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 1021 inner wall of tubular element can also be further reinforced by way of screw thread installation, on gear ring 303 Equipped with threaded hole 3032, reduce axial force to displacement caused by gear ring 303.

As shown in figure 11, the brake unit 4 is brake disc, it is preferable that its inner side is using the fan blade shape axially dried Design, disc rotation is dried in vehicle travel process, is conducive to motor radiating；Specifically, brake disc subtracts installed in planet The output terminal of fast unit 3.

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 1021 inner wall of tubular element of the periphery of planet carrier and outer end cap 102, preferably is selected from Seal bearing；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 wheel hub motor, further includes the first locating part 7；First locating part 7 with Close to the inner ring fitting of the bearing 6 for bearing axial force of outer end cap 102, for the bearing and gear ring of axial force will can be born 303 or it is close to the annular convex platform of 1021 inner surface of tubular element on the outer end cap 102, suitable for assembling from left to right Mode；It is opposite corresponding to the small one end of the bearing openings that axial force can be born in Fig. 1, i.e., " back-to-back " installation.

Further, a kind of wheel hub motor, further includes the second locating part, the 3rd locating part and the 4th locating part； First locating part, 7 and second locating part is respectively arranged on the both sides of the bearing 6 for bearing axial force close to outer end cap 102； 3rd locating part and the 4th locating part are respectively arranged on the both sides of another bearing 16 that can bear axial force；Wherein, it is described First locating part 7 can be the boss with the side plate integrated design of close outer end cap 102 in deceleration unit 3；Or for subtracting The baffle ring part (bearing positioning ring) being connected on fast unit 3 close to the side plate of outer end cap 102.When it is implemented, close to outer end cap 102 The bearing for bearing axial force outer ring it is spacing by the boss in deceleration unit 3, inner ring is by gear ring or retainer ring spacing；Away from outer By gear ring or retainer ring spacing, inner ring is by the shaft shoulder/on planet carrier or passes through for the outer ring of the bearing for bearing axial force of end cap 102 It is spacing that circlip is installed.In the another embodiment of the utility model embodiment, first locating part 7 with away from outer The inner ring fitting of the bearing 16 for bearing axial force of end cap 102, for be able to will bear the bearing of axial force and gear ring 303 or The annular convex platform of 1021 inner surface of tubular element on the outer end cap 102 is close to, suitable for assembly method from right to left；It is corresponding Can be born in Fig. 1 axial force bearing openings it is small one end it is opposite, i.e., it is " back-to-back " installation.

As shown in figure 12, a kind of wheel hub motor for automobile, further includes 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 axis 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, 17 and second locating part 180 of the first locating part 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 opposite 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 element 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 further includes motor speed or corner passes Sensor 8, it is installed on the outside (referring to Fig. 7-2) of wheel hub motor or internal (referring to Fig. 7-1), the motor speed or corner The motion parts 801 of sensor couple with transmission main shaft 5 or rotor field spider 201 or rotor, its stationary part 802 is installed on In the inner end cap 101 of housing 1, conducting wire is exported via foregoing cable data line interface.

Embodiment 2

The present embodiment and embodiment 1 difference lies in：The driving motor includes rotor field spider 201, stator 202 and permanent magnetism Iron 205, the stator 202 are installed 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 is formed with tubular element 2012, and the permanent magnet 205 is arranged on the outer surface of tubular element 2012, forms the rotor of magneto Structure, referring specifically to Fig. 5-5.

Or the driving motor is induction machine, including stator 202 and cage-type rotor 204, the stator 202 are installed 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 conducting bar 2043, the both ends of the conducting bar 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 dissipation performance, 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 equipped with 9/ radiating ribs of heat sink Piece/reinforcing rib, the outer surface of the inner end cap 101 are machined with 10/ radiation rib of heat sink/reinforcing rib；Outside the side wall 103 Surface is equipped with heat sink/radiation rib/reinforcing rib, 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 equipped with the first cooling passage 11, the side Wall 103 is equipped with the second cooling passage 12, and the inner side of the outer end cap 102 is equipped 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 Radiate in driving motor 2；Or the inner side of the inner end cap 101 is equipped with the first cooling passage 11, the side wall 103 The second cooling passage 12 is equipped with, first cooling passage 11 connects with the second cooling passage 12 and cooperatively forms cooling Liquid circulation canal, for radiating to driving motor 2；Or the inner side of the outer end cap 102 is equipped with the 3rd cooling passage 13, the side wall 103 is equipped 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 radiating to driving 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 on 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

Since 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 wheel hub motor, further includes a pair of bearings 14, when rotor field spider 201 is by unilateral plate 2011 and tubular When part 2012 forms, the bearing 14 is located between rotor field spider 201 and the tubular element 1021 of outer end cap 102, is used to support and turns Son；When rotor field spider 201 is made of unilateral plate 2011, the bearing 14 be located at rotor and outer end cap tubular element 1021 it Between.

In the another embodiment of the present embodiment, when rotor field spider 201 is by 2012 groups of unilateral plate 2011 and tubular element Cheng Shi, is inwardly equipped with a radial clearance between the tubular element 1021 of end cap direction extension on the tubular element 2011 and outer end cap, when Rotor field spider 201 produces gap when radially perturbing and is eliminated, the tubular element 2012 of rotor field spider and inside end cap side on outer end cap Contacted to the tubular element 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 of unilateral plate 2011, rotor and the tubular that inwardly end cap direction extends on outer end cap A radial clearance is equipped between part 1021, gap is eliminated when rotor, which produces, radially to be perturbed, rotor and inboard end on outer end cap The tubular element 1021 of lid direction extension contacts, and limitation rotor, which further produces, radially to be perturbed, and after perturbing disappearance, the radial clearance is extensive It is multiple；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 present embodiment and embodiment 1-4 difference lies in：Set on the side wall of the connection inner end cap 101 and outer end cap 102 There is suspension mount point 15 so that the wheel hub motor of the utility model can be suitable for full-sized car, referring specifically to Fig. 2-1 and Fig. 3.

Remaining is identical with embodiment 1-4.

The advantages of basic principle and main feature and the utility model of 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 present utility model is not limited to the above embodiments, described in above embodiments and description Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model is also Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed scope is defined by the appending claims and its equivalent thereof.

Claims

A kind of 1. wheel hub motor, it is characterised in that：Including housing, driving motor, deceleration unit, brake unit 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 equipped with inboard end The tubular element of lid direction extension；

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

The deceleration unit is installed on the outer end cap in the cavity of driving motor by the bearing that can bear axial force Tubular element on the inside of；

The brake unit be arranged on housing on outer end cap outside, it is connected with the output terminal of deceleration unit, or with wheel hub phase Even, the wheel hub is connected with the output terminal of deceleration unit；

The transmission main shaft is arranged between rotor and the deceleration unit of driving motor, to utilize deceleration unit increase driving motor Output torque.
A kind of 2. wheel hub motor according to claim 1, it is characterised in that：The inner end cap is equipped with suspension mount point And/or steering mechanism's mount point；Or the side wall of the connection inner end cap and outer end cap is equipped with suspension mount point and/or steering Mechanism mount point；Or the outer end cap is equipped with suspension mount point and/or steering mechanism's mount point.
A kind of 3. wheel hub motor according to claim 1, it is characterised in that：The driving motor includes stator, rotor branch Frame and with cored rotor, the stator are installed on connection inner end cap and the inside sidewalls of outer end cap, the rotor field spider by Unilateral plate is formed or collectively constituted by unilateral plate with tubular element；When rotor field spider is made of unilateral plate, unilateral plate is fixed on One end of rotor, and the cavity on rotor is covered, unilateral plate is equipped with the through hole for being used for accommodating transmission main shaft；

When rotor field spider is made of unilateral plate and tubular element, the iron core of rotor is installed on the outer surface of tubular element, and unilateral plate covers Cavity on lid rotor, and unilateral plate is equipped with the through hole for being used for accommodating transmission main shaft.
A kind of 4. wheel hub motor according to claim 1, it is characterised in that：The driving motor is induction machine, including Stator and cage-type rotor, the stator are installed on connection inner end cap and the inside sidewalls of outer end cap, and the cage-type rotor includes single Side plate, short-circuited conducting sleeve and at least one circle conducting bar, the both ends of the conducting bar are connected with short-circuited conducting sleeve and unilateral plate respectively；Or the driving Motor includes stator, rotor field spider and permanent magnet, and the stator is installed on connection inner end cap and the inside sidewalls of outer end cap, described Rotor field spider is made of unilateral plate with tubular element, and the permanent magnet is arranged on the outer surface of tubular element, forms the rotor of magneto Structure.
A kind of 5. wheel hub motor according to claim 3 or 4, it is characterised in that：When rotor field spider is by unilateral plate and tubular When part forms, tubular element at least one end is equipped with the flange to extend radially outwardly, to strengthen tubular element intensity, while rotor is limited Position.
A kind of 6. wheel hub motor according to claim 3 or 4, it is characterised in that：Further include a bearing, when rotor field spider by When unilateral plate is formed with tubular element, the bearing is used to support rotor between rotor field spider and the tubular element of outer end cap；When When rotor field spider is made of unilateral plate, the bearing is between rotor and the tubular element of outer end cap.
A kind of 7. wheel hub motor according to claim 3 or 4, it is characterised in that：The tubular element of the rotor field spider turns A radial clearance is equipped between the tubular element that inwardly end cap direction extends on son and outer end cap, when rotor field spider or rotor produce Gap is eliminated when radially perturbing, the tubular element or rotor of rotor field spider and the tubular element that inwardly end cap direction extends on outer end cap Contact, limits rotor field spider or rotor is further produced and radially perturbed, and after perturbing disappearance, which recovers.
A kind of 8. wheel hub motor according to any one of claim 1-4, it is characterised in that：The deceleration unit 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 driving motor output torque；The gear ring is arranged on the inside of the tubular element on outer end cap；The side board type planet carrier passes through symmetrical First set, which can bear the bearing of axial force and second, can bear tubular element of the bearing of axial force on outer end cap Inner side, and described first can bear the bearing of axial force and second and can bear the both sides that the bearing of axial force is located at gear ring respectively.
A kind of 9. wheel hub motor according to claim 8, it is characterised in that：The transmission main shaft sequentially passes through side board type row Carrier, rotor field spider, transmission main shaft one end are supported on by bearing in the centre bore of side board type planet carrier side plate, transmission main shaft The other end is by bearings in the centre bore of the inner end cap of housing；It is or remote on the tubular element on the outer end face of the housing One end from outer end face is equipped with the side plate parallel with inner end cap, and side plate is equipped with centre bore, and transmission main shaft one end passes through bearing branch Hold in the centre bore of the inner end cap of housing, the centre bore of the other end of transmission main shaft by bearings on foregoing side plate In.
A kind of 10. wheel hub motor according to claim 8, it is characterised in that：The gear ring and the tubular element on outer end cap It is integrally formed, the tubular element inner surface on outer end cap；Or the tubular element inner surface on the outer end cap is equipped with convex annular Platform, gear ring are pressed into and are fixed on the annular convex platform.
A kind of 11. wheel hub motor according to claim 10, it is characterised in that：Further include the first locating part, described first Locating part is bonded with the inner ring of the bearing for bearing axial force close to outer end cap, for that will can bear the outer of the bearing of axial force Circle is close to the annular convex platform of the tubular element inner surface on gear ring or the outer end cap.
A kind of 12. wheel hub motor according to claim 10, it is characterised in that：Further include the first locating part, described first Locating part is bonded with the inner ring of the bearing for bearing axial force away from outer end cap, for that will can bear the outer of the bearing of axial force Circle is close to the annular convex platform of the tubular element inner surface on gear ring or the outer end cap.
A kind of 13. wheel hub motor according to claim 10, it is characterised in that：Further include the first locating part, second spacing Part, the 3rd locating part and the 4th locating part, first locating part are outer with the bearing for bearing axial force close to outer end cap Circle fitting, second locating part are bonded with the outer ring of the bearing for bearing axial force away from outer end cap, and the described 3rd is spacing Part and the 4th locating part are located 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 be close to the third and fourth locating part on planet carrier.
A kind of 14. wheel hub motor according to claim 13, it is characterised in that：First locating part or the second locating part It is made of one with the outer end cap of housing.
A kind of 15. wheel hub motor according to claim 1, it is characterised in that：It is cold that the inner side of the inner end cap is equipped with first But liquid passage, the side wall are equipped with the second cooling passage, and the inner side of the outer end cap is equipped with the 3rd cooling passage, described First cooling passage, the second cooling passage and the connection of the 3rd cooling passage cooperatively form coolant circulation passage, are used for Radiate to driving motor.
A kind of 16. wheel hub motor according to claim 1 or 14, it is characterised in that：The stator core of the driving motor In be equipped with duct, cooling line is installed in duct, for for coolant by take away heat, coolant inlet and outlet Positioned at the side wall and/or outer end cap and/or outer end cap of housing.