CN209516825U

CN209516825U - Decelerating motor in a kind of electric car wheel

Info

Publication number: CN209516825U
Application number: CN201920054962.3U
Authority: CN
Inventors: 林牧; 喻渝
Original assignee: Dalian Is Along Safe Science And Technology Ltd
Current assignee: Dalian Is Along Safe Science And Technology Ltd
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2019-10-18
Anticipated expiration: 2029-01-14

Abstract

Decelerating motor in a kind of electric car wheel, belong to decelerating motor field, including base (1), compound planet gear (18), output gear (21), it is characterized in that, rotor disk (7) are fixed at the concentric axle journal of right section of common shaft (9), it is fixed with axial magnetic flux stator module one (4) on the inside of rear end cap (28), axial magnetic flux stator module two (16) is fixed on separator (5), equipped with output bearing (20) between output gear (21) and base (1)；The utility model has the beneficial effects that, disc type axial-flux electric machine and the double internal messing deceleration mechanisms of involute less tooth difference are highly integrated, it is compact-sized, conducive to small size, high-power, large torque, large speed ratio, high efficiency, high reliability driving is realized, it is easily installed on the spoke plate in electric automobile hub.

Description

Decelerating motor in a kind of electric car wheel

Technical field

The utility model belongs to decelerating motor field, in particular to decelerating motor in a kind of electric car wheel.

Background technique

A kind of mode of the driving as distribution driving, is all integrated into vehicle wheel for power, transmission and brake apparatus in wheel In hub, to simplify the drive mechanism of vehicle, improve transmission efficiency, conducive to realization lightweight, or even the shape in wheel transverse direction It the unique technical advantage such as can also drive under state, become an important developing direction of electric car.

Driving has motor direct-drive and motor via reducer structure to drive two kinds of basic modes in wheel.Motor direct-drive Wheel hub saves retarder, theoretically improves transmission efficiency, is conducive to improve functional integration, but uses and directly drive requirement The mechanical property of motor has the characteristics that low-speed big, torque density are big and invariable power region is wide, the design difficulty of motor It is larger；Deceleration mostly uses internal rotor high-speed motor, matches a corresponding deceleration mechanism, in the high revolving speed operation tool of motor Have under higher specific power and efficiency, by increasing torque after The gear deceleration, guarantees to obtain when wheel low speed is run biggish Steady torque.

The installation space of decelerating motor is limited in taking turns, and deceleration uses traditional radial magnetic field motor, there are volumes greatly, The unfavorable factors such as low efficiency, under the constraint of the space structure and axial dimension of wheel hub, type selecting limitation is big；In order under small size Reduction ratio more higher than common planetary gear deceleration mechanism is obtained, generallys use pin shaft output with the deceleration device of electric drilling match Cycloid reduction mechanism, and the tooth curve of cycloid reduction mechanism external gear is epicycloid, gear ring is pinwheel, and pin shaft occupy-place is big, choosing With bearing diameter is limited, pin shaft and pin hole friction loss are big, is easy to produce pitting corrosion, and non-optimal between Cycloidal Wheel and pinwheel Selection.

Summary of the invention

It is an object of the invention to make up prior art deficiency, provide it is a kind of compact-sized, it is power density is high, torque is close Degree is high, axial dimension is small, but the disc type axial-flux electric machine that output power can also reduce when low speed, with torque density height, deceleration Tooth curve than internal-external gear big, that high reliability output may be implemented is the double internal messing speed reducers of few teeth difference of involute Structure is integrated in same base with common shaft, and disc rotor motor, the rotor journal of common shaft are installed at the concentric axle journal of common shaft Compound planet gear is installed at place, and the fixed annulus and output gear on compound planet gear and base form double internal messings and slow down Mechanism, internal gear output have biggish torque density and rigidity under given design space, can mention under the conditions of equal volume High-bearing capacity is easily installed decelerating motor in a kind of electric car wheel on automotive hub spoke plate.

The utility model technical scheme applied to solve the technical problem is: decelerating motor in a kind of electric car wheel, packet Base, compound planet gear, output gear are included, drive end bearing bracket is fixed on by front end bonnet bolt, rear end cap by rear end bonnet bolt Base both ends, drive end bearing bracket center are equipped with first bearing, and output gear center is equipped with 3rd bearing, and common shaft is mounted on first On bearing and 3rd bearing, second bearing is housed on common shaft rotor journal, second bearing outer circle is arranged compound planet gear, machine Seat is equipped with fixed annulus, and compound planet gear is equipped with duplex planet gear wheel and duplex planet pinion gear, output gear It is equipped with output inner gear, duplex planet gear wheel is engaged with fixed annulus, and duplex planet pinion gear is nibbled with output inner gear It closes, balance element is fixed at common shaft rotor journal with balance element retainingf key, and first bearing inner ring is fixed by first bearing retaining ring On common shaft, second bearing outer ring is fixed on compound planet gear by second bearing baffle, inner ring is by second bearing retaining ring It is fixed on common shaft with balance element, 3rd bearing outer ring is fixed on output gear by 3rd bearing baffle, rear end cap and defeated There is rear end cap sealing ring between gear ring out, there is connection spoke plate screw hole in output gear end face, and base is externally provided with connection swing arm screw hole； It is characterized in that being fixed with rotor disk at the concentric axle journal of right section of common shaft, axial magnetic flux stator module is fixed on the inside of rear end cap One, axial magnetic flux stator module two is fixed on separator, equipped with output bearing between output gear and base.

Axial magnetic flux rotor assembly is further fixed on the rotor disk, rotor disk is fixed on public affairs by rotor disk retainingf key With on axis.

The isolation plate edge is fixed in base by separator fixed screw, and disk center is isolated and common shaft is concentric Separator sealing ring is housed between axle journal.

The output bearing is roller bearing, and output bearing outer ring is fixed in base by output end ring.

The utility model has the beneficial effects that disc type axial-flux electric machine and the double internal messing deceleration mechanisms of involute less tooth difference It is highly integrated, it is compact-sized, power density is high, torque density is big, reduction ratio is big, it is high-efficient, it can be achieved that high reliability drive, just In on the spoke plate being mounted in electric automobile hub.

Detailed description of the invention

It is illustrated below in conjunction with attached drawing with embodiment.

Fig. 1 is decelerating motor structural front view in a kind of electric car wheel.

Fig. 2 is a kind of left view view of decelerating motor in electric car wheel.

In figure: 1- base；1-1- connection swing arm screw hole；1-2- fixed annulus；The front end 2- bonnet bolt；3- drive end bearing bracket；4- Axial magnetic flux stator module one；5- separator；6- axial magnetic flux rotor assembly；7- rotor disk；8- rotor disk retainingf key；9- is public Axis；10- first bearing retaining ring；11- first bearing；12- separator sealing ring；13- balance element retainingf key；14- balance element；15- Second bearing baffle；16- axial magnetic flux stator module two；17- separator fixed screw；18- compound planet gear；18-1- is bis- Join planet gear wheel；18-2- duplex planet pinion gear；19- exports end ring；20- exports bearing；21- output gear；21- 1- output inner gear；22- second bearing；23- second bearing retaining ring；24- 3rd bearing；25- 3rd bearing baffle；26- connection Spoke plate screw hole；27- rear end cap sealing ring；28- rear end cap；The rear end 29- bonnet bolt.

Specific embodiment

Embodiment, referring to attached drawing, decelerating motor in a kind of electric car wheel, including it is base 1, compound planet gear 18, defeated Gear ring 21 out, drive end bearing bracket 3 are fixed on 1 both ends of base, front end by rear end bonnet bolt 29 by front end bonnet bolt 2, rear end cap 28 3 center of lid is equipped with first bearing 11, and 21 center of output gear is equipped with 3rd bearing 24, and common shaft 9 is mounted on first bearing 11 and 3rd bearing 24 on, second bearing 22 is housed, 22 outer circle of second bearing is arranged duplex planet tooth on 9 rotor journal of common shaft Wheel 18, base 1 are equipped with fixed annulus 1-2, and compound planet gear 18 is equipped with duplex planet gear wheel 18-1 and duplex row Star pinion gear 18-2, output gear 21 are equipped with output inner gear 21-1, duplex planet gear wheel 18-1 and fixed annulus 1-2 Engagement, duplex planet pinion gear 18-2 are engaged with output inner gear 21-1, and balance element 14 is fixed on public affairs with balance element retainingf key 13 At 9 rotor journal of axis, 11 inner ring of first bearing is fixed on common shaft 9 by first bearing retaining ring 10,22 outer ring of second bearing It is fixed on compound planet gear 18 by second bearing baffle 15, inner ring by second bearing retaining ring 23 and balance element 14 is fixed on public affairs With on axis 9,24 outer ring of 3rd bearing is fixed on output gear 21 by 3rd bearing baffle 25,28 inner circle of rear end cap and output gear There is rear end cap sealing ring 27 between circle 21, there is connection spoke plate screw hole 26 in 21 end face of output gear, and base 1 is externally provided with connection swing arm Screw hole 1-1；It is characterized in that being fixed with rotor disk 7 at the concentric axle journal of right section of common shaft 9, axial direction is fixed on the inside of rear end cap 28 Flux stator component 1, axial magnetic flux stator module 2 16 are fixed on separator 5, are filled between output gear 21 and base 1 There is output bearing 20.

Axial magnetic flux rotor assembly 6 is further fixed on the rotor disk 7, rotor disk 7 is fixed by rotor disk retainingf key 8 On common shaft 9.

5 edge of separator is fixed in base 1 by separator fixed screw 17,5 center of separator with it is public Separator sealing ring 12 is housed between the concentric axle journal of axis 9.

The output bearing 20 is roller bearing, exports 20 outer ring of bearing by output end ring 19 and is fixed on base 1 It is interior.

The principles of the present invention are: by disc type axial-flux electric machine axial dimension is small and the double internal messings of involute less tooth difference The small mutual supplement with each other's advantages of deceleration mechanism radial dimension, is integrated in base 1 by common shaft 9, is constituted and is subtracted in a kind of electric car wheel Speed motor, axial magnetic flux stator module 1, which is fixed on the inside of drive end bearing bracket 3, reduces number of components, and separator 5 is that axial magnetic flux is fixed The bracket of sub-component 2 16, and motor and speed reducer structure is separated into two autonomous working chambers to avoid mutual pollution；Axial magnetic Logical rotor assembly 6 is rotated by the drive common shaft 9 of rotor disk 7, and the drive of common shaft 9 is located at the compound planet gear 18 of eccentric diameter certainly It revolves while turning around the center fixed annulus 1-2, forms the planetary motion that existing revolution has rotation again, the small tooth of duplex planet Wheel 18-2 engagement output inner gear 21-1 filters out revolution motion, and movement is passed to output gear after torque is amplified by reduction ratio Enclose 21 rotations；Two pairs of inside engaged gears of involute less tooth difference internal messing planetary gear speed reducing mechanism are differential gearings, can be according to electricity The parameter and automobile parameter of machine require that different teeth number differences and the different numbers of teeth is selected to realize any speed ratio；Same radial dimension Under, planetary gear only one, big model, big load bearing can be selected；Involute internal gear pair multi-tooth meshing, teeth portion generate Bending stress it is small, gears slip rate is low, and friction loss is few, and transmission efficiency is high；Internal-gear output and output gear 21 with Bearing 20 is exported equipped with roller between base 1, it is ensured that maximum torsional rigidity and output bearing capacity.

The application method of the utility model is: decelerating motor front end is outstanding by connection swing arm screw hole 1-1 connection vehicle vehicle It hangs and the devices such as steering, rear end is fixed on spoke by connection spoke plate screw hole 26 and is mounted in wheel hub, outside variation base 1 Portion's connection type is equally applicable to other occasions.

Claims

1. decelerating motor in a kind of electric car wheel, including base (1), compound planet gear (18), output gear (21), front end Lid (3) is fixed on base (1) both ends, drive end bearing bracket by rear end bonnet bolt (29) by front end bonnet bolt (2), rear end cap (28) (3) center is equipped with first bearing (11), and output gear (21) center is equipped with 3rd bearing (24), and common shaft (9) is mounted on In first bearing (11) and 3rd bearing (24), second bearing (22) are housed on common shaft (9) rotor journal, second bearing (22) Outer circle is arranged compound planet gear (18), and base (1) is equipped with fixed annulus (1-2), and compound planet gear (18) is equipped with Duplex planet gear wheel (18-1) and duplex planet pinion gear (18-2), output gear (21) are equipped with output inner gear (21- 1), duplex planet gear wheel (18-1) is engaged with fixed annulus (1-2), duplex planet pinion gear (18-2) and output inner gear (21-1) engagement, balance element (14) are fixed at common shaft (9) rotor journal with balance element retainingf key (13), first bearing (11) Inner ring is fixed on common shaft (9) by first bearing retaining ring (10), and second bearing (22) outer ring is solid by second bearing baffle (15) Be scheduled on compound planet gear (18), inner ring is fixed on common shaft (9) by second bearing retaining ring (23) and balance element (14), Three bearings (24) outer ring is fixed on output gear (21) by 3rd bearing baffle (25), rear end cap (28) and output gear (21) Between have rear end cap sealing ring (27), there is connection spoke plate screw hole (26) in output gear (21) end face, and base (1) is externally provided with connection Swing arm screw hole (1-1)；It is characterized in that being fixed with rotor disk (7) at the concentric axle journal of right section of common shaft (9), in rear end cap (28) Side is fixed with axial magnetic flux stator module one (4), and axial magnetic flux stator module two (16) is fixed on separator (5), output gear It encloses between (21) and base (1) equipped with output bearing (20).

2. decelerating motor in a kind of electric car wheel according to claim 1, characterized in that also fixed on rotor disk (7) Have axial magnetic flux rotor assembly (6), rotor disk (7) is fixed on common shaft (9) by rotor disk retainingf key (8).

3. decelerating motor in a kind of electric car wheel according to claim 1, characterized in that separator (5) edge passes through Separator fixed screw (17) is fixed in base (1), be equipped between separator (5) center and common shaft (9) concentric axle journal every Separation disc sealing ring (12).

4. decelerating motor in a kind of electric car wheel according to claim 1, characterized in that output bearing (20) is roller Bearing, output bearing (20) outer ring are fixed in base (1) by output end ring (19).