CN110315958A - In-wheel motor drive unit - Google Patents

In-wheel motor drive unit Download PDF

Info

Publication number
CN110315958A
CN110315958A CN201810351617.6A CN201810351617A CN110315958A CN 110315958 A CN110315958 A CN 110315958A CN 201810351617 A CN201810351617 A CN 201810351617A CN 110315958 A CN110315958 A CN 110315958A
Authority
CN
China
Prior art keywords
shell
bracket
drive unit
motor drive
nut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810351617.6A
Other languages
Chinese (zh)
Inventor
竹内直哉
田村四郎
太向真也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp filed Critical NTN Corp
Publication of CN110315958A publication Critical patent/CN110315958A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/07—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the damper being connected to the stub axle and the spring being arranged around the damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/02—Resilient suspensions for a single wheel with a single pivoted arm
    • B60G3/04—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially transverse to the longitudinal axis of the vehicle
    • B60G3/06—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially transverse to the longitudinal axis of the vehicle the arm being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/18—Steering knuckles; King pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/142—Independent suspensions with lateral arms with a single lateral arm, e.g. MacPherson type
    • B60G2200/1424—Independent suspensions with lateral arms with a single lateral arm, e.g. MacPherson type the lateral arm having an L-shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/422—Driving wheels or live axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/18—Mounting of vehicle engines
    • B60G2204/182—Electric motor on wheel support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/50—Constructional features of wheel supports or knuckles, e.g. steering knuckles, spindle attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/70—Materials used in suspensions
    • B60G2206/71—Light weight materials
    • B60G2206/7102—Aluminium alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/50—Electric vehicles; Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The present invention provides in-wheel motor drive unit, in the operation for being linked the shell of the bracket of draft hitch side and in-wheel motor drive unit using multiple bolts, the excellent connecting structure of operating efficiency.In-wheel motor drive unit has the shell of the rotation transmission path of the rotation circle of hub spindle bearing portion, motor part, receiving from the motor rotation axis of motor part to hub spindle bearing portion, can be mounted on the fixed mechanism of shell (29) with the bracket part (17m) of draft hitch connection, by the bracket part.Fixed mechanism includes the multiple bracket through holes (17h, 17h) for being formed in bracket part (17m)；The multiple shell through holes (46,46) for being formed in shell (29) and being connect respectively with multiple bracket through holes；Through the bolt (47) of each bracket through hole (17h) and each shell through hole (46) that are connected to each other；And the inner threaded member (48) including at least two internal screw threads screwed togather respectively with multiple bolts (48f).

Description

In-wheel motor drive unit
Technical field
The present invention relates to the structures for linking in-wheel motor drive unit and draft hitch.
Background technique
The in-wheel motor drive unit and draft hitch for being configured at the inner space area of wheel link.As such Connecting structure, for example there is known Japanese Unexamined Patent Publication 2015-073370 bulletins (patent document 1) to record such structure in the past.Specially The in-wheel motor that sharp document 1 is recorded is mounted on the joint arm of draft hitch using multiple bolts.Each bolt and axle are flat Extend capablely, bolt head and joint arm contact.A bolt axle portion in multiple bolts and the cycle component for being formed in wheel hub Internal screw-thread screw.Other bolt axle portions although not shown, but think and be formed in in-wheel motor shell internal screw thread spiral shell It closes.
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2015-073370 bulletin
But the inventors discovered that, in the connecting structure based on above-mentioned previous such bolt, there is also what should be improved Point.That is, in previous connecting structure, tapping thread processing is implemented by the shell to in-wheel motor come formed with The internal screw thread that bolt axle portion screws togather.Therefore, in the case where making shell aluminum casting object for the purpose of lightweight, possibly can not Fully ensure the intensity of the thread of shell.As the reason, worry that thread is caused to lack by the stomata that shell is included Damage, thread caused by the loading and unloading repeatedly of the bolt caused by vehicle maintenance through when defect.Accordingly, it is considered to prepare with Joint arm is mounted on the structure of shell by the connection of bolts and nuts by the not androgynous nut of shell.
If the connecting structure for using multiple groups bolts and nuts, then do not need to form internal screw thread in shell, in intensity and resistance to It is advantageous in terms of long property.But in connection operation, in order to avoid nut falls off, nut and bolt is avoided to rotate together, need Multiple nuts are all supported.Therefore, there are rooms for improvement in terms of operating efficiency.
Summary of the invention
The present invention is made into view of the above circumstances, and its purpose is to provide compared with the case where using multiple nuts The beneficial connecting structure of operating efficiency.
Means for solving the problems
In order to realize the purpose, in-wheel motor drive unit of the invention has: hub spindle bearing portion, has and wheel The rotation rotated integrally encloses, encloses the retainer plate faced and the multiple rollings being configured in radial clearance across radial clearance and rotation Kinetoplast；Motor part drives rotation circle；Shell is accommodated and is enclosed from the motor rotation axis of motor part to rotation Rotation transmission path；Suspension bracket comprising can be with the connection portions of draft hitch connection and in conjunction with connection portions Bracket part；And fixed mechanism, bracket part is mounted on shell.Also, fixed mechanism, which includes, is formed in bracket part Multiple bracket through holes；The multiple shell through holes for being formed in shell and being connect respectively with multiple bracket through holes；Through each other Each bracket through hole of connection and the bolt of each shell through hole；And include at least two respectively with multiple bolt spiral shells The inner threaded member of the internal screw thread of conjunction.
According to the present invention, when suspension bracket is fixed on shell using multiple bolts, as long as by an inner threaded member Bearing can be such that inner threaded member of multiple bolts and this screws togather not fall off.Therefore, there is no need to be by each bolt bearing It does not fall off and prevents from rotating, operating efficiency improves.In addition, due to not needing to form internal screw thread in suspension bracket and shell, It can make suspension bracket and/or shell aluminium casting for the purpose of lightweight.Therefore, the non-spring that can reduce draft hitch carries Lotus, so that the ride characteristic of electric vehicle improves.
All bolts of the invention are preferably screwed togather at least one inner threaded member.Fixed mechanism only has an interior spiral shell Line component, or there are multiple inner threaded members.As another program of the invention, fixed mechanism, which also has, to be configured at and interior spiral shell The nut at the different position of line component, nut are screwed togather with a bolt.According to the program, fixed mechanism in addition to inner threaded member it Outer there are also well known nuts, by screwing togather well known nut with one in multiple bolts, can link suspension bracket solid Due to shell.
The shape of inner threaded member is not particularly limited.As a scheme of the invention, inner threaded member has structure respectively A plate portion at multiple nut portions of multiple internal screw threads and in conjunction with the end face of multiple nut portions.It, can according to the program It lengthens nut portions and substantially ensures the thread of internal screw thread, be capable of increasing the intensity of bond sites.In addition, can be by well known spiral shell Therefore female and plate production inner threaded member can reduce the cost of inner threaded member.The combination of nut and plate is, for example, to weld.
As another preferred scheme of the invention, the shape with nut and/or nut portions is formed in bracket part or shell The corresponding recess portion of shape prevents from rotating by the way that nut and/or nut portions are chimeric with recess portion.It, can be by internal screw thread according to the program The nut support of component or monomer is not fall off and prevent from rotating.The chimeric of nut (portion) and recess portion is also possible to gap Relaxation engaging, or indentation is chimeric.As another party's scheme, other bolt can also be prepared, and utilized in addition Inner threaded member is fixed on bracket part or shell by bolt.
The shape of inner threaded member is not particularly limited.As a scheme of the invention, inner threaded member is by constant thickness Plate formed, internal screw thread wears plate and extends along the thickness direction of plate.According to the program, tapping thread processing energy only is implemented to plate Inner threaded member is made, therefore the cost of inner threaded member can be further decreased.
The shape of shell and bracket part is not particularly limited.As a scheme of the invention, formed in the outside wall surface of shell Have a protrusion, protrusion have with the continuous one side of outside wall surface of shell and another side, shell through hole is from protrusion One side extends to another side through protrusion, and the one side of bracket part and protrusion is adjacent to configuration.According to the program, Inner threaded member and bolt head this both sides are configured at hull outside.Therefore, being screwed into for bolt and setting for inner threaded member It sets and becomes easy.
Invention effect
In this way, in accordance with the invention it is possible to making multiple bolt links using an inner threaded member, to improve suspension bracket It is mounted on the operating efficiency of the shell of in-wheel motor drive unit.
Detailed description of the invention
Fig. 1 is the expansion cross-sectional view for indicating the in-wheel motor drive unit of one embodiment of the present invention.
Fig. 2 is the overall diagram that the in-wheel motor drive unit of the embodiment is indicated together with draft hitch.
Fig. 3 is the overall diagram that the in-wheel motor drive unit of the embodiment is indicated together with draft hitch.
Fig. 4 is the perspective view for taking out the suspension bracket of the embodiment and being indicated.
Fig. 5 be the bond sites of the shell by the suspension bracket of the embodiment and in-wheel motor drive unit take out into The cross-sectional view that row indicates.
Fig. 6 is the perspective view for taking out the inner threaded member of the embodiment and being indicated.
Fig. 7 is that the bond sites of the shell by the suspension bracket of variation and in-wheel motor drive unit take out carry out table The cross-sectional view shown.
Fig. 8 is the outside drawing for indicating bond sites shown in Fig. 7.
Fig. 9 is that the bond sites of the shell by the suspension bracket of another embodiment and in-wheel motor drive unit are taken out The cross-sectional view being indicated.
Figure 10 is that the bond sites of the shell by the suspension bracket of another embodiment and in-wheel motor drive unit take The cross-sectional view being indicated out.
Description of symbols
10 in-wheel motor drive units, 11 hub spindle bearing portion, 12 inner rings (rotation circle), 13 outer rings (retainer plate), 17 hang Frame torr frame, the upper end 17b (connection portions), the lower end 17d (connection portions), 17h bracket through hole, 17m, 17n bracket part, 21 Motor part, 29 motor field frames (shell), 31 reduction parts, 39 main body shells, 39b back portion (shell), 41 pillar (suspensions Component), 42 lower arms (suspension member), 48 inner threaded members, 48f internal screw thread, 48n nut portions, 48p plate portion, 46 shell through holes, 49 protrusions (shell), M, N, O axis, W wheel rim.
Specific embodiment
Hereinafter, explaining embodiments of the present invention in detail based on attached drawing.Fig. 1 indicates one embodiment of the present invention The expansion cross-sectional view of in-wheel motor drive unit.Fig. 2 is the in-wheel motor that the embodiment is indicated together with draft hitch The overall diagram of driving device, the state from indicating on the inside of vehicle width direction.Fig. 3 is that the embodiment party is indicated together with draft hitch The overall diagram of the in-wheel motor drive unit of formula indicates the state observed along vehicle front-rear direction.As shown in Figure 1, electricity in wheel Motivation driving device 10 has: the hub spindle bearing portion 11 set on the center of wheel；Drive the motor part 21 of wheel；By motor The reduction part 31 that the rotation in portion 21 is transmitted after slowing down to hub spindle bearing portion 11.Motor part 21 and reduction part 31 and hub bearing The axes O in portion 11 offsettingly configures.Axes O is extended along the width of the car, consistent with axle.On the position of axes O direction, hub spindle Bearing portion 11 is configured at the axis direction side (external disk side) of in-wheel motor drive unit 10, and motor part 21 is configured at electricity in wheel The axis direction other side (inner disc side) of motivation driving device 10, reduction part 31 are configured at than motor part 21 by axis direction one Side, the axis direction position of reduction part 31 and the axis direction position of hub spindle bearing portion 11 are Chong Die.
Wheel is made of the periphery fit a tyre (figure omits) of wheel rim W shown in Fig. 2.In-wheel motor drive unit 10 It is configured at the inner space area of wheel rim W.Hub spindle bearing portion 11 and reduction part 31 are contained in the inner space area of wheel rim W. Motor part 21 is prominent from the inner space area of wheel rim W to the axis direction other side (inner disc side), but as change (not shown) Shape example, motor part 21 can also be contained in the inner space area of wheel rim W.
Hub spindle bearing portion 11 is temperature of inner ring during rotation, fixed outer ring, is included as the rotation circle (hub wheel) in conjunction with wheel rim W Inner ring 12；The outer ring 13 of retainer plate as the outside diameter for being coaxially configured at inner ring 12；And it is configured at inner ring 12 and outer Multiple rolling elements 14 of annulus between circle 13.
Outer ring 13 is mounted on the front portion 39f of the main body shell 39 of reduction part 31 by integrated structures such as bolts. Front portion 39f is the housing wall portion for covering one side of axes O direction of the reduction part 31 in main body shell 39.
Motor part 21 has motor rotation axis 22, rotor 23, stator 24 and motor field frame 29, according to the sequence It is configured in order from the axis M of motor part 21 to outside diameter.Motor part 21 is the radial clearance electricity of internal rotor, external stator form Motor of the machine but it is also possible to be other forms.For example, although not shown, but motor part 21 is also possible to axial gap motor. The periphery of the encirclement stator 24 of motor field frame 29.The body shell of the direction axis M one side and reduction part 31 of motor field frame 29 The back portion 39b of body 39 is combined.Another side in the direction axis M of motor field frame 29 by plate motor field frame outer cover 29v sealing.Back portion 39b is the housing wall portion for covering another side in axes O direction of the reduction part 31 in main body shell 39.
Main body shell 39, motor field frame 29 and motor field frame outer cover 29v, which are constituted, becomes in-wheel motor driving dress Set the shell of 10 gabarit, also referred to as shell.The shell is aluminum or aluminum alloy system.
The both ends of motor rotation axis 22 are rotatably freely supported on main body shell 39 by rolling bearing 27,28 respectively Back portion 39b and motor part 21 motor field frame outer cover 29v.
Axis M as motor rotation axis 22 and the rotation center of rotor 23 is parallel with the axes O of hub spindle bearing portion 11 Ground extends.That is, motor part 21 is offsettingly configured in a manner of separating with the axes O of hub spindle bearing portion 11.For example, such as Shown in Fig. 2, the axis M and axes O of motor part are upwardly biased in vehicle front and back, are specifically configured and are being leaned on vehicle than axes O Position in front of.
As shown in Figure 1, reduction part 31 includes the input shaft coaxially combined with the motor rotation axis 22 of motor part 21 32；Coaxially set on the input gear 33 of the outer peripheral surface of input shaft 32；Multiple intermediate gears 34,36；With these intermediate gears 34, The jackshaft 35 that 36 center combines；The output shaft 38 linked with the inner ring 12 of hub spindle bearing portion 11；Coaxially it is set to output shaft The output gear 37 of 38 outer peripheral surface；Accommodate the main body shell 39 of these multiple gears and rotary shaft.Main body shell 39 is due to structure At the gabarit of reduction part 31, therefore also referred to as reduction part shell.
Input gear 33 is the helical gear of external tooth.Input shaft 32 is hollow structure, the axis direction of motor rotation axis 22 One side end 22e is inserted into the hollow hole 32h of input shaft 32 and carries out that spline is chimeric (also to include in a manner of being unable to relative rotation Sawtooth is chimeric, same as below).Input shaft 32 two end sides of input gear 33 by rolling bearing 32a, 32b rotatably freely It is supported on the front portion 39f and back portion 39b of main body shell 39 respectively.
The axis N of the rotation center of jackshaft 35 as reduction part 31 is extended parallel to axes O.The two of jackshaft 35 End is rotatably freely supported on the front portion 39f and back portion 39b of main body shell 39 by rolling bearing 35a, 35b.? The direction the axis N end side of jackshaft 35 is coaxially equipped with the first intermediate gear 34.In the direction axis N of jackshaft 35 Centre region is coaxially equipped with the second intermediate gear 36.
First intermediate gear 34 and the second intermediate gear 36 are the helical gear of external tooth, and the diameter of the first intermediate gear 34 is greater than The diameter of second intermediate gear 36.First intermediate gear 34 of major diameter is configured at more another by the direction axis N than the second intermediate gear 36 The position of side, and engaged with the input gear of path 33.Second intermediate gear 36 of path is configured at than the first intermediate gear 34 lean on the position of the direction axis N side, and engage with the output gear of major diameter 37.
As shown in Fig. 2, the axis N of jackshaft 35 is configured at the position more against the top than axes O and axis M.In addition, jackshaft 35 axis N is configured at the position for leaning on rear of vehicle by vehicle front, than axis M than axes O.Reduction part 31 is that have in vehicle The parallel-axes gears of three axis of the axes O, N, M that configure and extend parallel to each other at spaced intervals on front-rear direction slows down Device is slowed down with second level.It should be noted that reduction part 31 is also possible to have in multiple as variation (not shown) Between axis multistage parallel-axes gears retarder.
It returns to Fig. 1 to be illustrated, output gear 37 is the helical gear of external tooth, coaxially in the axes O of output shaft 38 Centre portion.Output shaft 38 extends along axes O.One side end of axes O direction of output shaft 38 is inserted into the centre bore of inner ring 12 and is fitted into To be unable to relative rotation.The axes O direction central portion of output shaft 38 leans on outer diameter in the axes O direction end side than inner ring 12 The position of side is rotatably freely supported on the front portion 39f of main body shell 39 by rolling bearing 38a.The axis of output shaft 38 The direction O end side is rotatably freely supported on the back portion 39b of main body shell 39 by rolling bearing 38b.
As shown in Figure 1, reduction part 31 passes through the engaging of the driving gear of path and the driven gear of major diameter, i.e. input gear 33 with the first intermediate gear 34 engage and the second intermediate gear 36 is with engaging for output gear 37 and by the rotation of input shaft 32 Turn to transmit after slowing down to output shaft 38.Rotating element from the input shaft 32 of reduction part 31 to output shaft 38 is constituted motor part 21 rotation is transferred to the rotation transmission path of the inner ring 12 of hub spindle bearing portion 11.
Main body shell 39 further includes barrel other than above explained front portion 39f and back portion 39b. The barrel covers the internal part of reduction part 31 in a manner of surrounding the axes O extended parallel to each other, N, M.Plate Front portion 39f covers the internal part of reduction part 31 from axis direction side, and in conjunction with a side of barrel.Plate Back portion 39b from the axis direction other side covering reduction part 31 internal part, and with another side of barrel tie It closes.The back portion 39b of main body shell 39 is also inner space and the electricity that reduction part 31 is combined, be separated out with motor field frame 29 The next door of the inner space in motivation portion 21.Motor field frame 29 is supported on main body shell 39, and from main body shell 39 to axis side It is prominent to the other side.
Main body shell 39 marks off the inner space of reduction part 31, by all rotating element (rotary shafts of reduction part 31 And gear) it is contained in inner space.As shown in Fig. 2, the lower part of main body shell 39 becomes oil storage unit 39t.The height of oil storage unit 39t Position is Chong Die with the height and position of the lower part of motor part 21.In the oil storage unit of the lower part for the inner space for occupying main body shell 39 39t stores the lubricating oil for lubricating motor part 21 and reduction part 31.
Input shaft 32, jackshaft 35 and output shaft 38 are by above-mentioned rolling bearing by two supports.These rolling bearings 32a, 35a, 38a, 32b, 35b, 38b are transverse bearing.
When being supplied electric power outside in-wheel motor drive unit 10 to motor part 21, the rotor 23 of motor part 21 Rotation exports rotation from motor rotation axis 22 to reduction part 31.Reduction part 31 will be input to input shaft 32 from motor part 21 Rotation slow down, and from output shaft 38 to hub spindle bearing portion 11 export.The inner ring 12 of hub spindle bearing portion 11 with 38 phase of output shaft Same revolving speed rotation, drives the wheel rim W for being mounted on inner ring 12.
Suspension bracket 17 is fixed in the outside wall surface of main body shell 39.Referring to Fig. 2, on vehicle front-rear direction, suspension support Frame 17 is offsettingly configured at the side opposite with motor part 21, specifically rear of vehicle.
As shown in figure 3, suspension bracket 17 vertically extends.The upper end 17b of suspension bracket 17 is configured at than slowing down Position of the portion 31 on the inside of vehicle width direction, it is prominent from the inner space area of wheel rim W.In addition, upper end 17b is configured at motor The rear side (rear of vehicle) in portion 21.In addition, although upper end 17b is configured at the top of in-wheel motor drive unit 10, but it is The position lower than the top of reduction part 31.Upper end 17b is fixed on the lower end of pillar 41 by fixed mechanisms such as bolts 18.
Load is carried in order to reduce the non-spring of draft hitch, suspension bracket 17 is preferably aluminum or other light metal systems.Separately Outside, suspension bracket 17 or aluminium casting.
Pillar 41 is the suspension member vertically extended, specifically the damping mechanism of combination of dampings device etc. and Attenuator made of the elastic mechanism of helical spring etc..When the in-wheel motor for being installed on spring lower component from suspension member drives When dynamic device 10 occurs to bounce and rebound in the up-down direction, pillar 41 stretches in the up-down direction, to make in-wheel motor The spring and rebound decaying of driving device 10.
The up and down direction central portion 17c of suspension bracket 17 is vertically extended, by the upper end 17b of suspension bracket 17 with Lower end 17d is combined.Central portion 17c is equipped with tie rod arm 19 in above-below direction.The front and back from suspension bracket 17 to vehicle of tie rod arm 19 Direction is prominent.The pull rod of the front end of tie rod arm 19 and steering gear (not shown) links.
As shown in Fig. 2, the height and position of lower end 17d is Chong Die with the height and position of oil storage unit 39t.In addition, such as Fig. 3 institute Show, the lower end 17d of suspension bracket 17 is configured at the position than reduction part 31 on the lower, is contained in the inner space area of wheel rim W Domain.Lower end 17d links by ball-and-socket joint 51 and lower arm 42.The ball-and-socket center of ball-and-socket joint 51 and the upper end of pillar 41 are connected The straight line of knot constitutes steer axis K.In-wheel motor drive unit 10 can be turned to around steer axis K together with wheel rim W (wheel). Ball-and-socket center is also referred to as strengthening point.
Lower arm 42 is arranged in the downside of in-wheel motor drive unit 10 and suspension bracket 17 and is extended along the width of the car Suspension member, have vehicle width direction inner end 43,44 and vehicle width direction outboard end 45.Vehicle width direction inner end 43,44 by Pivot is linked to vehicle-body-side component (not shown).Vehicle width direction outboard end 45 is configured at the underface of lower end 17d, connects with ball-and-socket First 51 stud 52 combines.
Lower arm 42 can be cardinal extremity with vehicle width direction inner end 43,44, take vehicle width direction outboard end 45 as free end and along upper Lower direction is swung.As a result, from suspension member, the in-wheel motor drive unit 10 for being installed on spring lower component can be upper and lower It bounces and rebounds on direction.
Lower arm 42 and pillar 41 constitute draft hitch.Present embodiment is column support type draft hitch.It should be noted that vehicle Body side member refers to the component that body side is installed on from the component being illustrated.
In the following, explaining the structure for linking the shell of suspension bracket 17 and in-wheel motor drive unit 10 in detail.
Fig. 4 is that the suspension bracket of the embodiment is taken out the perspective view being indicated.The upper end 17b of suspension bracket 17 And lower end 17d respectively constitutes the connection portions that can link with draft hitch.
In upper end, 17b is formed with through-hole 17f, through hole 17g and slit 17j.Through hole 17g runs through upper end 17b And it vertically extends.Slit 17j also runs through upper end 17b along the vertical direction.Also, slit 17j is formed in front of and after vehicle The inner peripheral surface of through hole 17g is connect by the gap opened up on direction with the lateral surface of upper end 17b.Through-hole 17f runs through upper end 17b and along vehicle front-rear direction extend, intersect with slit 17j.
As shown in Fig. 2, the lower end of pillar 41 passes through through hole 17g, bolt 18 passes through through-hole 17f, before bolt 18 End screws togather nut 18n.When bolt 18 and nut 18n are fastened, slit 17j constriction, so that upper end 17b is fixed on pillar 41 lower end.
In lower end, 17d is mounted with the pod of ball-and-socket joint 51 (Fig. 2), but pod is not shown in Fig. 2~Fig. 4. It should be noted that socket arrangement in ball-and-socket joint 51 upper end and sliding freely keep ball-and-socket joint 51 bulb.As a result, The stud 52 of ball-and-socket joint 51 relative to the lower end direction 17d freely.
It is formed with bracket part 17m on the downside of the 17b of upper end, bracket part 17n is formed on the upside of the 17d of lower end.It is outstanding Frame torr frame 17 is illustrated in figure 4 substantially C-shaped, and the compartment of terrain that bracket part 17m, 17n separates up and down direction is adjacent.Each bracket part 17m, 17n are in rear side in conjunction with the up and down direction central portion 17c of suspension bracket 17.Bracket part 17m, 17n passes through shown in fig. 5 solid Determine the shell that mechanism is mounted on in-wheel motor drive unit 10.
Fig. 5 is that the bond sites of the shell by suspension bracket and in-wheel motor drive unit take out the section view being indicated Figure indicates to use plane A-A cutting in-wheel motor drive unit, and see upwards from below as shown by the arrows in Fig. 2 Examine the state of cutting plane.The fixed mechanism that the shell of in-wheel motor drive unit 10 is fixed on bracket part 17m is included to be formed In multiple bracket through hole 17h of bracket part 17m, 17n；Be formed in the shell of in-wheel motor drive unit 10 and respectively with it is more Multiple shell through holes 46 of a bracket through hole 17h, 17h connection；It is passed through through the bracket through hole 17h and shell being connected to each other The bolt 47 of through-hole 46；And the inner threaded member 48 of the internal screw thread 48f screwed togather respectively with bolt 47 including at least two.
The bracket through hole 17h of present embodiment is respectively arranged two in each bracket part 17m, 17n, amounts to setting four.Shell Body through hole 46 is set as quantity identical as bracket through hole 17h, and identical as bracket through hole 17h configures.These perforations Hole is extended parallel to axes O (Fig. 3).
Protrusion 49 is formed in the outside wall surface of the shell of in-wheel motor drive unit 10.Protrusion 49 for example with it is electronic Casing body 29 and/or main body shell 39 are joined integrally.Protrusion 49 is with the continuous one side 49p of outside wall surface with shell and separately One side 49q.One side 49p is directed toward on the outside of vehicle width direction, and another side 49q is directed toward on the inside of vehicle width direction.Multiple shell perforations Hole 46 extends from one side 49p to another side 49q through 49 ground of protrusion.Bracket part 17m is adjacent to one side 49p to be matched It sets.Multiple shell through holes 46 are configured to corresponding with multiple bracket through hole 17h.
Bracket part 17m also has vehicle width direction lateral surface 17p and vehicle width direction medial surface 17q.Multiple bracket through hole 17h Vehicle width direction medial surface 17q is extended to from vehicle width direction lateral surface 17p.Bracket part 17m medial surface 17q and protrusion in the direction of vehicle width The another side 49q in portion 49 is contacted.
Bolt 47 passes through the bracket through hole 17h and shell through hole 46 being connected to each other from 49 side of protrusion.Bolt 47 Head is locked to the another side 49q of protrusion 49.The axle portion of bolt 47 runs through shell through hole 46 and bracket through hole 17h, The front end of bolt 47 is prominent from vehicle width direction lateral surface 17p.Also, each bolt 47 is extended along the width of the car.
Fig. 6 is that inner threaded member is taken out the perspective view being indicated.Inner threaded member 48 includes by multiple nut portions 48n The plate portion 48p being bonded to each other with multiple nut portions 48n.The centre bore of each nut portions 48n constitutes internal screw thread 48f.As shown in fig. 6, The side of each nut portions 48n is formed as regular hexagon etc., polygonal cross-section.
Plate portion 48p is by welding etc. in conjunction with the end face of nut portions 48n.In plate portion, 48p is formed with identical as nut portions 48n The centre bore of the through hole of quantity, each nut portions 48n is connect with the through hole of plate portion 48p.Inner threaded member 48 and bracket part 17m It is configured adjacently.Specifically, plate portion 48p is contacted with the vehicle width direction lateral surface 17p of bracket part 17m, each nut portions 48n and each spiral shell The front end of bolt 47 screws togather.
The inner threaded member 48 of present embodiment includes and be formed in protrusion 49 two in four shell through holes 46 Two bracket through hole 17h for being formed in bracket part 17m in a shell through hole 46 and four bracket through hole 17h are corresponding , two nut portions 48n.Also, inner threaded member 48 includes two internal screw threads connecting respectively with two shell through holes 46 48f, each internal screw thread 48f are screwed togather with from each shell through hole 46 each bolt 47 outstanding.
The positions different from nut portions 48n in plate portion 48p are also formed with through hole 48h.In the present embodiment, exist Through hole 48h is equipped between two nut portions 48n, 48n.As shown in figure 5, in the vehicle width direction lateral surface 17p shape of bracket part 17m The internal screw thread 17r of Cheng Youyu through hole 48h connection.Bolt 50 is inserted into through hole 48h on the outside of vehicle width direction, thus bolt 50 It is screwed togather with internal screw thread 17r.Inner threaded member 48 is installed on bracket part 17m in a manner of not falling off as a result,.The length ratio of bolt 50 It is short from the distance of the back portion 39b shown in fig. 5 from plate portion 48p to main body shell.
From plate portion 48p, the nut portions 48n of present embodiment is configured at the side opposite with bracket part 17m.
Bracket part 17n is also fixedly linked on the shell of in-wheel motor drive unit 10 in the same manner as above-mentioned bracket part 17m Body.
In the connection of the present embodiment for the shell that suspension bracket 17 is fixedly linked on to in-wheel motor drive unit 10 In structure, multiple nut portions 48n are bonded to each other by a plate portion 48p.As a result, by multiple bolts 47 respectively with nut portions In the operation that 48n is screwed togather, all nut portions 48n can be supported by supporting an inner threaded member 48, institute can be prevented Some nut portions 48n are rotated together, so as to screw togather each bolt 47 quickly and easily with internal screw thread 48f.That is, By being linked multiple bolts 47 using an inner threaded member 48, so that suspension bracket 17 is fixedly linked on in-wheel motor The efficiency of the operation of the shell of driving device 10 improves.
In addition, it is not necessary that internal screw thread is arranged in the shell of suspension bracket 17 and in-wheel motor drive unit 10, can make Suspension bracket 17 and shell are aluminium casting.In suspension bracket 17 and shell, a small amount of stomata will not become problem, can be realized Non- spring carries the lightweight of load and cost and reduces.As long as, will not be sacrificial in addition, ensure the thread of the inner threaded member 48 of requirement The intensity of the bond sites of domestic animal suspension bracket 17 and shell.
In addition, by the way that inner threaded member 48 is fixed on object part (bracket part 17m) using bolt 50, as shown in figure 5, The burden of narrow space between the back portion 39b and suspension bracket 17 of main body shell, carrying internal threads component 48 is eliminated, Multiple bolts 47 can be made easily to screw togather with nut portions 48n.
In the following, illustrating modified embodiment of the present embodiment.Fig. 7 is to fill the suspension bracket of variation and in-wheel motor driving The bond sites for the shell set take out the cross-sectional view being indicated.Fig. 8 is from indicating the direction shown in the arrow B in Fig. 7 The figure of the state of inner threaded member 48.It is identical attached to the structure mark common with embodiment above-mentioned about the variation Icon is remembered and is omitted the description, described below to different structures.In the variation, from plate portion 48p, nut portions 48n is configured at side identical with bracket part 17m.It is each that multiple receivings are formed in the vehicle width direction lateral surface 17p of bracket part 17m The recess portion 17s of nut portions 48n.Each recess portion 17s is connect with each bracket through hole 17h.Each recess portion 17s is formed as and each nut portions The corresponding shape of 48n, such as regular hexagon section.Each nut portions 48n is chimeric with each recess portion 17s and be prevented from rotating as a result,.On The bolt 50 and through hole 48h stated can omit.
According to the variation of Fig. 7, multiple recess portion 17s carrying internal threads components 48 can be utilized.Therefore, inner threaded member 48 It is difficult to fall off, as shown in fig. 7, making spiral shell in the narrow space between the back portion 39b and suspension bracket 17 of main body shell When bolt 47 and nut portions 48n are screwed togather, the burden of carrying internal threads component 48 can be mitigated.
In the following, illustrating another embodiment of present embodiment.Fig. 9 is will be in the suspension bracket and wheel of another embodiment The bond sites of the shell of motor drive take out the cross-sectional view being indicated.About another embodiment, to it is aforementioned The common structure of embodiment mark identical appended drawing reference and omit the description, it is described below to different structures.? In another embodiment, bracket part 17n is linked using multiple nuts 58 instead of an above-mentioned inner threaded member 48 and is fixed In protrusion 49.It should be noted that other bracket part 17m is fixedly linked on protrusion 49 using inner threaded member 48.
Nut 58 is well known shape.The hexagonal cross-section that is, side is positive has internal screw thread 58f in centre bore. Each nut 58 is inserted into each recess portion 17s on the outside of vehicle width direction.Each nut 58 is screwed togather with bolt 47.The side of recess portion 17s is sticked in The side of nut 58, thus to prevent nut 58 from rotating.It should be noted that can also nut 58 side and recess portion 17s Side between be formed with gap.Both alternatively, nut 58 can also be pressed into recess portion 17s as variation (not shown), make Gap be 0.
Another embodiment according to Fig. 9 can support each nut 58 using each recess portion 17s.Therefore, nut 58 is difficult To fall off, as shown in figure 9, making bolt in narrow space between the back portion 39b and suspension bracket 17 of main body shell 47 with nut 58 screw togather when, the burden of back nut 58 can be mitigated.
In addition, another embodiment according to Fig. 9, can prevent each nut 58 from rotating using each recess portion 17s.
In the following, illustrating the another embodiment of present embodiment.Figure 10 is by the suspension bracket and wheel of another embodiment The bond sites of the shell of built-in motor driving device take out the cross-sectional view being indicated.About another embodiment, to it is preceding The common structure of the embodiment stated, marks identical appended drawing reference and omits the description, to different structures, said below It is bright.In yet another embodiment, an inner threaded member 59 being made of the plate of constant thickness is screwed togather with multiple bolts 47.
The internal screw thread 59f that multiple thickness directions along plate penetrate through is equipped in inner threaded member 59.Multiple internal screw thread 59f's It configures corresponding with multiple bracket through hole 17h.By contacting internal screw thread 59 with the vehicle width direction lateral surface 17p of bracket part 17n And each internal screw thread 59f is connect with each bracket through hole 17h.Also, each bolt 47 is inserted into each shell from 49 side of protrusion to pass through Through-hole 46.The axle portion of each bolt 47 through each shell through hole 46 and each bracket through hole 17h and with each internal screw thread 59f spiral shell It closes.
Another embodiment according to Fig.10, does not need above-mentioned nut portions 48n, is capable of providing simple shape Inner threaded member 59.
More than, with reference to the accompanying drawings of embodiments of the present invention, but the present invention is not limited to embodiment illustrated. For embodiment illustrated, various repair can be applied in range same as the present invention or in equivalent range Just, it deforms.For example, it is also possible to extract a part of structure out from an above-mentioned embodiment, from above-mentioned another embodiment The structure of middle extraction another part combines the structure of these extractions.
In above-mentioned each embodiment, outward according to the head of bolt 47, shell on the inside of the vehicle width direction Protrusion 49, bracket part 17m, inner threaded member 48 sequence configured.In addition to this, as variation (not shown), Can on the inside of the vehicle width direction outward according to the head of bolt 47, bracket part 17m, shell protrusion 49, internal screw thread The sequence of component 48 is configured.Alternatively, above-mentioned 47 head of bolt can also be exchanged with the configuration of inner threaded member 48.
Industrial applicibility
The present invention is used advantageously in electric car and hybrid electric vehicle.

Claims (6)

1. a kind of in-wheel motor drive unit, has:
Hub spindle bearing portion has the rotation circle rotated integrally with wheel, consolidates across radial clearance with what the rotation circle faced Enclose and be configured at calmly multiple rolling elements in the radial clearance；
Motor part drives rotation circle；
Shell is accommodated from the motor rotation axis of the motor part to the rotation transmission path of the rotation circle；
Suspension bracket comprising the connection portions and the bracket part in conjunction with the connection portions that can link with draft hitch； And
The bracket part is mounted on the shell by fixed mechanism,
The fixed mechanism includes
It is formed in multiple bracket through holes of the bracket part；
The multiple shell through holes for being formed in the shell and being connect respectively with the multiple bracket through hole；
Through the bolt of each bracket through hole and each shell through hole that are connected to each other；And
The inner threaded member of the internal screw thread screwed togather respectively with multiple bolts including at least two.
2. in-wheel motor drive unit according to claim 1, wherein
The fixed mechanism also has the nut for being configured at the position different from the inner threaded member,
The nut is screwed togather with a bolt.
3. in-wheel motor drive unit according to claim 1 or 2, wherein
The inner threaded member have respectively constitute multiple internal screw threads multiple nut portions and with the multiple nut portions End face combine a plate portion.
4. in-wheel motor drive unit according to claim 3, wherein
It is formed with recess portion corresponding with the shape of the nut and/or the nut portions in the bracket part or the shell,
The nut and/or the nut portions are chimeric with the recess portion and prevent from rotating.
5. in-wheel motor drive unit according to claim 1, wherein
The inner threaded member is formed by the plate of constant thickness,
The internal screw thread is arranged in the plate and extends along the thickness direction of the plate.
6. according to claim 1~2, in-wheel motor drive unit described in any one of 4,5, wherein
It is formed with protrusion in the outside wall surface of the shell,
The protrusion have with the continuous one side of the outside wall surface and another side,
The shell through hole extends from the one side to the another side through the protrusion,
The bracket part and the one side are adjacent to configuration.
CN201810351617.6A 2018-03-29 2018-04-18 In-wheel motor drive unit Withdrawn CN110315958A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-065314 2018-03-29
JP2018065314 2018-03-29

Publications (1)

Publication Number Publication Date
CN110315958A true CN110315958A (en) 2019-10-11

Family

ID=68112578

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810351617.6A Withdrawn CN110315958A (en) 2018-03-29 2018-04-18 In-wheel motor drive unit

Country Status (2)

Country Link
JP (1) JP2019172244A (en)
CN (1) CN110315958A (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5316416A (en) * 1976-07-29 1978-02-15 Nippon Kagaku Sangyo Kk Screw fixation method in alminium shape material
JPS5983642U (en) * 1982-11-30 1984-06-06 日産ディーゼル工業株式会社 Mirror mounting device
JP3583827B2 (en) * 1995-02-20 2004-11-04 日本無機株式会社 Device for connecting orthogonal rod-shaped members in an assembly frame for mounting an air filter
JP2005226798A (en) * 2004-02-16 2005-08-25 Maspro Denkoh Corp Structure of connection member and structure of connection part of pipe using the connection member
JP2017172779A (en) * 2016-03-25 2017-09-28 株式会社総合車両製作所 Nut holder and coupling method using nut holder
JP6125083B1 (en) * 2016-10-17 2017-05-10 Ntn株式会社 In-wheel motor drive device

Also Published As

Publication number Publication date
JP2019172244A (en) 2019-10-10

Similar Documents

Publication Publication Date Title
EP3434504B1 (en) In-wheel motor drive device
EP1977924A1 (en) In-wheel motor system
EP3047996B1 (en) In-wheel motor driving device
US20120217789A1 (en) In-wheel motor drive assembly
US10583860B2 (en) Steering arm assembly, steering mechanism and multi-axle steering wheel type heavy duty vehicle
EP3744549A1 (en) In-wheel motor drive device
JP2008224035A (en) Axle housing with differential bearing support
EP3517329A1 (en) Suspension structure for in-wheel motor drive device
EP3527413A1 (en) In-whhel motor drive device
CN109955671A (en) Column support type draft hitch
JP2013226994A (en) In-wheel motor drive unit
CN113427996B (en) Independent suspension distributed driving system
CN202790347U (en) Hub reduction gear and vehicle
CN110315958A (en) In-wheel motor drive unit
US20140260743A1 (en) Wheel driving apparatus
CN206439354U (en) Hub reduction planetary mechanism speed changer for pure electric system
US20220048317A1 (en) Braking structure for in-wheel motor drive device
CN110315959A (en) The connecting structure of in-wheel motor drive unit and draft hitch
CN104595424A (en) Planetary wheel side reducer assembly
CN109505964A (en) A kind of two speed transmission for electric vehicle
CN102343932A (en) Steering mechanism of power car
RU121199U1 (en) MOBILE WHEEL HUB MOUNTING DEVICE
CN111347876B (en) Rear axle of formula car and formula car
CN212564264U (en) Differential mechanism suspension structure in FSAE racing car
CN105114172B (en) Integrated engine assembly for aircraft

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20191011