CN207274294U - A kind of automobile rear driving axle assembly - Google Patents
A kind of automobile rear driving axle assembly Download PDFInfo
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- CN207274294U CN207274294U CN201721218177.4U CN201721218177U CN207274294U CN 207274294 U CN207274294 U CN 207274294U CN 201721218177 U CN201721218177 U CN 201721218177U CN 207274294 U CN207274294 U CN 207274294U
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Abstract
The utility model discloses a kind of automobile rear driving axle assembly, including rear-guard axle case assy, semiaxis and including connecting flange, bevel housing, the main tooth being arranged in final drive casing body, by tooth, the main gearbox assembly of differential assembly, connecting flange is fixed with main tooth, engaged by tooth with main tooth, differential assembly includes differential casing, axle shaft gear and four planetary gears, each planetary gear engages connection with two axle shaft gears respectively, semiaxis outer end is detachably fixed after being each passed through the left and right end portions of rear-guard axle case assy with tire, it is detachably fixed by tooth and differential casing, connecting flange and main tooth position are at rear-guard axle housing overcentre position, it is located at by tooth and differential assembly in the middle part of rear-guard axle housing.A kind of automobile rear driving axle assembly structure of the utility model is simple, effectively reduces uttering long and high-pitched sounds in vehicle traveling process, effectively improves planetary service life, and moment of torsion transmits steadily, avoids producing resonance, effectively improves vehicle NVH performances and riding comfort.
Description
Technical field
A kind of automobile rear-guard is the utility model is related to, more particularly to a kind of automobile rear driving axle assembly.
Background technology
Include main gearbox assembly in existing automobile rear driving axle assembly, and existing main gearbox assembly is by driving
Axle shaft gear is connected with two planetary gears respectively inside differential casing in differential assembly in dynamic device, so in semiaxis
Each planetary gear stress is bigger in rotary course, and main tooth revolves the rotation at a slow speed that rapidly translating rotation is semiaxis, reduction
Rotary speed, moment of torsion increases during secondary, and changes torque direction, and planetary gear transmits moment of torsion not during moment of torsion is changed
Steadily so that two semiaxis being attached thereto shake and shake, generation utter long and high-pitched sounds and resonate, reduce vehicle NVH performances and
Riding comfort.And the assembly technology pore size opened up on differential casing is bigger, reduces the strong of differential casing
Degree and rigidity, reduce the impact resistant capability of differential casing, reduce the integral strength of overall rear bridge driven and and after shortening
The service life of bridge driving.In addition the main differential bearing that subtracts of traditional independence is adjusted using adjust pad, the flank after installation
Gap adjustment is difficult and difficult control, assembles for the first time unqualified, needs to reselect the gasket of different-thickness and dismounts again, pacifies
Inefficiency is filled, and backlash adjustment is improper can cause main tooth and produce deviation by the position of engagement of tooth, and in garage
Produce and utter long and high-pitched sounds during sailing.
And existing Rear axle reinforcement plate is relatively more, caliber change is not gentle, and weld seam is relatively more, welding quality unstable, holds
Easily lead to stress concentration and axle housing mode is low.
The content of the invention
The utility model is completed to solve deficiency of the prior art, and the purpose of this utility model is to provide one
Kind is simple in structure, can effectively reduce uttering long and high-pitched sounds in vehicle traveling process, and effectively improves planetary service life, turns round
Square transmits steadily, avoids producing resonance, effectively improves the automobile rear driving axle assembly of vehicle NVH performances and riding comfort.
A kind of automobile rear driving axle assembly of the utility model, including rear-guard axle case assy and it is arranged at the axle case assy
The main gearbox assembly of central position, the main gearbox assembly include connecting flange, bevel housing, be arranged at it is described
Main tooth in final drive casing body, be rotatably connected by tooth, differential assembly and respectively at left and right sides of the differential assembly
The semiaxis in portion, the connecting flange are fixed with the main tooth, and the main tooth is angular wheel, described by tooth and the main tooth
Engagement is fixed, and the main tooth is mutually perpendicular to described by the central axis of tooth, and the differential assembly includes differential casing, position
In the axle shaft gear in left and right ends portion in the differential carrier body and four planet teeth between two axle shaft gears
Wheel, the planetary gear is vertical with two axle shaft gears, each planetary gear respectively with two axle shaft gears one
Side engagement connection, each planetary gear are rotatably disposed in the differential carrier body, the axle shaft gear opposite side
End is detachably fixed connection with the corresponding semiaxis respectively, and the semiaxis outer end is each passed through the rear-guard axle case assy
It is detachably fixed after left and right end portions with corresponding tire, described to be detachably fixed by tooth and the differential carrier outer rim, institute
Connecting flange and the main tooth position are stated at the rear-guard axle case assy overcentre position, it is described total by tooth and the differential mechanism
Into in the middle part of the rear-guard axle case assy.
A kind of automobile rear driving axle assembly of the utility model can also be：
The rear-guard axle case assy includes two rear-guard upper casings, rear-guard lower casing and rear-guard rear cover, the rear-guard upper casing and institute
State the docking of rear-guard lower casing to fix, the rear-guard upper casing offers mounting hole, the rear-guard rear cover with the rear-guard lower casing center
It is fixed with the mounting hole of the rear-guard upper casing and the rear-guard lower casing, position and the differential assembly of the rear-guard rear cover
Position correspondence.
The rear-guard rear cover cross section is diamond shape.
Radial ribs are provided with the outer wall of the bevel housing lower part.
Four planetary gear uniform rings are arranged in the differential carrier body, the interval between the adjacent planetary gear
Angle is 90 °.
Set on the differential casing at the adjacent planetary gear interval location and offer installing technological hole,
Four installing technological holes are equipped with the differential casing, the installing technological hole uniform ring is arranged on the differential casing
On.
Each semiaxis inner end is arranged with differential bearing, and the semiaxis is rotatably connected in the differential bearing,
Left and right ends portion of the differential bearing medial extremity respectively with the differential casing is fixed, and the outer end of the differential bearing is set
Adjusting nut is equipped with, the adjusting nut is detachably fixed with the bevel housing position adjustable.
Bearing cap is provided with the differential bearing, the bearing cap is fixedly connected with the differential bearing, the adjustment
Nut is removably fixed between the bevel housing and the bearing cap.
Bevel housing left and right ends portion is detachably fixed with rear axle assy housing by pivot flange, described
The medial surface of pivot flange with the differential housing left and right ends seal fix, the lateral surface of the pivot flange with it is described after
Axle assembly housing is fixed.
Be provided with oil sealing and dust cover between the pivot flange and the differential housing outer end, the oil sealing with it is described
Dust cover is sheathed on the semiaxis, and the oil sealing medial surface offsets with the adjusting nut, the lateral surface of the oil sealing with
The dust cover medial surface sealing offsets, and the dust cover lateral surface offsets with pivot flange sealing, outside the oil sealing
The left and right ends portion inner wall of wall and the differential casing is detachably fixed.
A kind of automobile rear driving axle assembly of the utility model, including rear-guard axle case assy and it is arranged at the axle case assy
The main gearbox assembly of central position, the main gearbox assembly include connecting flange, bevel housing, be arranged at it is described
Main tooth in final drive casing body, be rotatably connected by tooth, differential assembly and respectively at left and right sides of the differential assembly
The semiaxis in portion, the connecting flange are fixed with the main tooth, and the main tooth is angular wheel, described by tooth and the main tooth
Engagement is fixed, and the main tooth is mutually perpendicular to described by the central axis of tooth, and the differential assembly includes differential casing, position
In the axle shaft gear in left and right ends portion in the differential carrier body and four planet teeth between two axle shaft gears
Wheel, the planetary gear is vertical with two axle shaft gears, each planetary gear respectively with two axle shaft gears one
Side engagement connection, each planetary gear are rotatably disposed in the differential carrier body, the axle shaft gear opposite side
End is detachably fixed connection with the corresponding semiaxis respectively, and the semiaxis outer end is each passed through the rear-guard axle case assy
It is detachably fixed after left and right end portions with corresponding tire, described to be detachably fixed by tooth and the differential carrier outer rim, institute
Connecting flange and the main tooth position are stated at the rear-guard axle case assy overcentre position, it is described total by tooth and the differential mechanism
Into in the middle part of the rear-guard axle case assy.In this way, driving device is drivingly connected flange rotary, the connecting flange rotation drives
The main tooth spiral fixed thereto turns, and the main tooth spiral turns to drive the described of engagement normal thereto by tooth spiral to be turned, since main tooth is
Angular wheel, and the main tooth is by tooth central axis with being mutually perpendicular to, therefore torque direction changes, while speed is reduced,
Rapidly to rotate at a slow speed, by tooth low speed rotation overall differential casing will driven to rotate, and then drive and set by translating rotation
Rotated at a slow speed in two axle shaft gears in the differential carrier body, due to being that normally travel is kept straight at this time, four institutes
Stating does not have relative rotary motion between planetary gear and the axle shaft gear, four planetary gears follow the differential carrier
Body rotates at a slow speed together, and the semiaxis being detachably fixed with the axle shaft gear also rotates at a slow speed, two semiaxis rotary speeies
It is identical, and then drive two tires in left and right to travel at the same speed.When automobile needs to turn, then controller controls four planet teeth
Wheel starts to rotate relative to the differential casing, and then drives the axle shaft gear of left and right two being meshed therewith with difference
Speed rotation, and then drive left and right ends semiaxis rotate at different rates so that the tire running of left and right ends
Speed is different, for example when automobile turns to the left, controls the semiaxis rotary speed in left side to be less than the rotary speed of right axle,
Realize that automobile left side tire steering angle is small, and car right side tire running rotating speed is high, realization is turned to the left.For example automobile is to the right
When steering, control the semiaxis rotary speed in left side to be higher than the rotary speed of right axle, realize that automobile left side tire turns to
Speed is big, and car right side tire running rotating speed is small, and realization bends to right.And to be pierced by the rear-guard axle housing total for semiaxis outboard end
Cheng Houyu tires are fixed, and main gearbox assembly is supported and facilitates its operation by rear-guard axle case assy.No matter so keeping straight on
Or during turning, the planetary gear stress is averaged distribution to four planetary gears when transmitting moment of torsion, respectively
The planetary gear stress is smaller, can under equal conditions use the planetary gear that intensity is low, size is small, and prolong
The planetary service life, the axle shaft gear and the planetary gear are grown during power and moment of torsion transmit more
Add uniform and steady, avoid semiaxis from occurring rocking in rotary course and rotating deviation and then produce resonance, simultaneously because differential
Power is transmitted more steady between device housing and semiaxis, therefore can be eliminated a part and be uttered long and high-pitched sounds, and effectively increases the NVH performances of vehicle
And improve riding comfort.A kind of automobile rear driving axle assembly of the utility model, is relative to the advantages of prior art：Structure
Simply, uttering long and high-pitched sounds in vehicle traveling process can be effectively reduced, and effectively improves planetary service life, moment of torsion transmission
Steadily, avoid producing resonance, effectively improve vehicle NVH performances and riding comfort.
Brief description of the drawings
A kind of automobile rear driving axle assembly outside schematic diagram of Fig. 1 the utility model.
A kind of automobile rear driving axle assembly rear-guard axle case assy schematic internal view of Fig. 2 the utility model.
A kind of automobile rear driving axle assembly main gearbox assembly schematic internal view of Fig. 3 the utility model.
A kind of automobile rear driving axle assembly differential casing schematic diagram of Fig. 4 the utility model.
A kind of automobile rear driving axle assembly differential assembly internal structure schematic diagram of Fig. 5 the utility model.
A kind of automobile rear driving axle assembly bevel housing the latter half view of Fig. 6 the utility model.
A kind of automobile rear driving axle assembly main gearbox assembly partial schematic diagram of Fig. 7 the utility model.
A kind of automobile rear driving axle assembly of Fig. 8 the utility model is in automobile accelerated order noise curve figure.
A kind of automobile rear driving axle assembly of Fig. 9 the utility model slides order noise curve figure in automobile belt shelves.
A kind of automobile rear driving axle assembly of Figure 10 the utility model is in car deceleration order noise curve figure.
Figure number explanation
1 ... bevel housing 2 ... connecting flange 3 ... is by tooth
4 ... semiaxis 5 ... axle shaft gear 6 ... planetary gears
7 ... installing technological hole 8 ... differential bearing 9 ... adjusting nuts
10 ... differential mechanism left shell half 11 ... differential mechanism right half-shell 12 ... bearing caps
13 ... oil sealing 14 ... dust cover 15 ... pivot flanges
16 ... main main ratch portion 18 ... the spacer cylinders of tooth teeth portion 17 ...
19 ... main main tooth lower bearing 21 ... the rear-guard upper casings of tooth upper bearing (metal) 20 ...
22 ... rear-guard lower casing 23 ... rear-guard rear cover 24 ... radial ribs
25 ... bolt 26 ... planetary gear shaft 27 ... differential assemblies
Embodiment
The related each figures of Fig. 1 below in conjunction with the accompanying drawings to Figure 10 a kind of automobile rear driving axle assembly of the utility model is made into
One step describes in detail.
A kind of automobile rear driving axle assembly of the utility model, please refers to Fig.1 into the related each figures of Figure 10 related each figure, bag
Include rear-guard axle case assy and be arranged at the main gearbox assembly of the axle case assy central position, the main gearbox assembly bag
Include connecting flange 2, bevel housing 1, the main tooth being arranged in the bevel housing 1, by tooth 3, differential assembly 27
It is rotatably connected and consolidates in the semiaxis 4 in 27 left and right sides portion of differential assembly, the connecting flange 2 with the main tooth respectively
Fixed, the main tooth is angular wheel, described that fixation, the main tooth and the central shaft by tooth 3 are engaged with the main tooth by tooth 3
Line is mutually perpendicular to, the differential assembly 27 include differential casing, in the differential carrier body left and right ends portion half
Shaft gear 5 and four planetary gears 6 between two axle shaft gears 5, the planetary gear 6 with two described half
Shaft gear 5 is vertical, and each planetary gear 6 engages connection with two 5 one sides of axle shaft gear respectively, each planet tooth
Wheel 6 is rotatably disposed in the differential carrier body, and 5 another side of axle shaft gear respectively can with the corresponding semiaxis 4
Dismounting is fixedly connected, and 4 outer end of semiaxis is each passed through after the left and right end portions of the rear-guard axle case assy and corresponding tire
It is detachably fixed, described to be detachably fixed by tooth 3 and the differential carrier outer rim, the connecting flange 2 and the main tooth
It is described that the rear-guard bridge is located at by tooth 3 and the differential assembly 27 at the rear-guard axle case assy overcentre position
In the middle part of housing assy.Rotated in this way, driving device is drivingly connected flange 2, the connecting flange 2 rotation drives fixed thereto described
Main tooth spiral turns, and the main tooth spiral turns to drive the described of engagement normal thereto to be rotated by tooth 3, since main tooth is angular wheel, and
The main tooth by 3 central axis of tooth with being mutually perpendicular to, therefore torque direction changes, while speed is reduced, and will rapidly rotate and turn
Turn to and rotate at a slow speed, driving overall differential casing to rotate by 3 low speed rotation of tooth, and then drive and be arranged at the differential mechanism
Two axle shaft gears 5 in housing rotate at a slow speed, due to being that normally travel is kept straight at this time, four planetary gears 6
There is no relative rotary motion between the axle shaft gear 5, four planetary gears 6 follow the differential casing slow together
Speed rotation, the semiaxis 4 being detachably fixed with the axle shaft gear 5 also rotate at a slow speed, and two 4 rotary speeies of semiaxis are identical,
And then two tires in left and right are driven to travel at the same speed.When automobile needs to turn, then controller controls four planetary gears 6 to open
Begin to rotate relative to the differential casing, and then drive the axle shaft gear 5 of left and right two being meshed therewith with different
Speed rotates, and then drives the semiaxis 4 of left and right ends to rotate at different rates, so that the tire running speed of left and right ends
Degree is different, for example when automobile turns to the left, controls 4 rotary speed of semiaxis in left side to be less than the rotary speed of right axle 4,
Realize that automobile left side tire steering angle is small, and car right side tire running rotating speed is high, realization is turned to the left.For example automobile is to the right
When steering, control 4 rotary speed of semiaxis in left side to be higher than the rotary speed of right axle 4, realize automobile left side tyre revolution
It is big to speed, and car right side tire running rotating speed is small, realization bends to right.And 4 outboard end of semiaxis is pierced by the rear-guard bridge
Fixed after housing assy with tire, main gearbox assembly is supported and facilitates its operation by rear-guard axle case assy.No matter so exist
During straight trip or turning, 6 stress of planetary gear is averaged distribution to four planetary gears 6 when transmitting moment of torsion
On, each 6 stress of planetary gear is smaller, can under equal conditions use the planet tooth that intensity is low, size is small
Wheel 6, and the service life of the planetary gear 6 is extended, the axle shaft gear 5 and the planetary gear 6 are passed in power and moment of torsion
It is more uniformly and steady during passing, avoid semiaxis 4 from occurring rocking in rotary course and rotating deviation and then produce resonance,
Simultaneously because power transmission is more steady between differential casing and semiaxis 4, therefore a part can be eliminated and uttered long and high-pitched sounds, effectively increased
The NVH performances of vehicle simultaneously improve riding comfort.A kind of automobile rear driving axle assembly of the utility model, relative to the prior art
The advantages of be：It is simple in structure, can effectively reduce uttering long and high-pitched sounds in vehicle traveling process, and effectively improve making for planetary gear 6
With the service life, moment of torsion transmits steadily, avoids producing resonance, effectively improves vehicle NVH performances and riding comfort.
A kind of automobile rear driving axle assembly of the utility model, please refers to Fig.1 into the related each figures of Figure 10 related each figure,
Can be specifically on the basis of previous technique scheme：The rear-guard axle housing include two rear-guard upper casings 21, rear-guard lower casing 22 and after
Rear cover 23 is driven, the rear-guard upper casing 21 docks fixation, the rear-guard upper casing 21 and the rear-guard lower casing with the rear-guard lower casing 22
22 centers offer mounting hole, and the mounting hole of the rear-guard rear cover 23 and the rear-guard upper casing 21 and the rear-guard lower casing 22 is equal
It is fixed, the position of the rear-guard rear cover 23 and 27 position correspondence of differential assembly.In this way, rear-guard axle housing is by the rear-guard
Shell 21 and the rear-guard lower casing 22 are fixed, and without unnecessary weld seam, avoid stress concentration, and axle housing mode is high, fixation, and
Multiple reinforcing plates are no longer needed, simple in structure, cost is low.And the rear-guard rear cover 23 fixed with the middle part of rear-guard lower casing 22
Stress concentration is then further reduced, improves the non-deformability of global facility, and convenient formation.Further preferred technical side
Case is：The rear-guard lower casing 22 and the rear-guard upper casing 21 are gentle transition by one end to the other end.So can be to avoid a variety of
The problem of stress concentration that caliber changes and brings.Further preferred technical solution is on the basis of previous technique scheme：Institute
It is diamond shape to state 23 cross section of rear-guard rear cover.The advantages of rear-guard rear cover 23 of diamond shape is that shaping is easy and easy for installation.Separately
Outer can also be is provided with radial ribs 24 on the outer wall of the bevel housing lower part.The effect of radial ribs 24 is to strengthen
The support force of the bevel housing lower part, improves the support stiffness of whole integral automobile rear driving axle assembly.
A kind of automobile rear driving axle assembly of the utility model, please refers to Fig.1 into the related each figures of Figure 10 related each figure,
Can be specifically on the basis of previous technique scheme：Four 6 uniform rings of planetary gear are arranged in the differential carrier body, phase
Interval angles between the adjacent planetary gear 6 are 90 °.In this way, four planetary gears 6 are located on the differential casing
Interior, adjacent interval angles between the two can ensure that the planetary gear 6 is symmetrically distributed on the differential casing for 90 °
, ensure its Transmit evenly rotary force and moment of torsion on four azimuth planes, ensure two axle shaft gears 5 being engaged with
Operate steadily, and then be further ensured that the semiaxis 4 of left and right ends operates steadily, is i.e. the tire of left and right ends operates steadily, into one
Step reduction is uttered long and high-pitched sounds, and is avoided resonating, is effectively improved vehicle NVH performances and riding comfort, and since the planetary gear 6 is uniform
It is arranged on the differential casing, 6 stress of planetary gear is consistent, therefore its overall service life effectively extends.
Further preferred technical solution is：4 engaging tooth of semiaxis, the planet are provided with two 5 opposite flanks of axle shaft gear
Be equipped with planet engaging tooth on gear 6,4 engaging tooth of semiaxis on two axle shaft gears 5 respectively with each planet tooth
Planet engaging tooth engagement connection on wheel 6.Described in drive left and right ends are engaged with so when the planetary gear 6 rotates
5 rotating speed of axle shaft gear produce difference, and then realize automobile to steadily turn left or turn right.
A kind of automobile rear driving axle assembly of the utility model, please refers to Fig.1 into the related each figures of Figure 10 related each figure,
It can also be on the basis of previous technique scheme：It is located at adjacent 6 interval location of the planetary gear on the differential casing
Place's setting offers installing technological hole 7, and four installing technological holes 7, the installing technological hole 7 are equipped with the differential casing
Uniform ring is arranged on the differential casing.In this way, due to using four planetary gears 6, stress reduces, while
7 size of the installing technological hole opened up on the differential casing is uniform can reduce, and effectively improve the overall differential
The intensity and non-deformability of device housing, while reduce and utter long and high-pitched sounds.
A kind of automobile rear driving axle assembly of the utility model, please refers to Fig.1 into the related each figures of Figure 10 related each figure,
It can also be on the basis of previous technique scheme：The planetary gear 6 is rotatably affixed at the difference by planetary gear shaft 26
On fast device housing, the outer end of the planetary gear shaft 26 is rotatably disposed on the differential casing, the planetary gear shaft
26 the inner is with being fixed on 6 central position of planetary gear.In this way, 6 center of planetary gear is fixed on the planet
Gear shaft 26 is inner, and the rotation of planetary gear shaft 26 drives the planetary gear 6 to rotate, and the planetary gear shaft 26 can revolve
Turn to be fixed on the differential casing, ensure that the planetary gear 6 does not fall out and engaged with the axle shaft gear 5.Protect
Demonstrate,proving the planetary gear 6 can be controlled while realizing in company with the differential casing and being revolved round the sun by tooth 3 by controller
It is around 26 rotation of planetary gear shaft, to realize the differential speed rotation of left and right sides semiaxis 4 and differential transmission.Certainly can also be
The connection mode of other structures, as long as the planetary gear 6 can be rotatably connected on the differential casing.
A kind of automobile rear driving axle assembly of the utility model, please refers to Fig.1 into the related each figures of Figure 10 related each figure,
It can also be on the basis of previous technique scheme：Each 4 inner end of semiaxis is arranged with differential bearing 8, and the semiaxis 4 can revolve
Turn to be connected in the differential bearing 8, left and right ends portion of 8 medial extremity of differential bearing respectively with the differential casing consolidates
Fixed, the outer end of the differential bearing 8 is provided with adjusting nut 9, the adjusting nut 9 and 1 position of bevel housing
It is adjustable to be detachably fixed.In this way, differential bearing 8 is set on semiaxis 4, such differential bearing 8 is fixed on the differential carrier
In vivo, the semiaxis 4 rotation in the differential bearing 8, avoids wearing the semiaxis 4 and the differential casing, conveniently more
The differential bearing 8 is changed, while the differential bearing 8 is used to support the inner end of the semiaxis 4.And in the differential bearing 8
Outer end is provided with adjusting nut 9, and the effect of adjusting nut 9 is can be with the bevel housing 1 during assembling
It is detachably fixed, while can adjusts the differential bearing 8 after the rotation of adjusting nut 9 and be located in the bevel housing 1
Position, and then the position that the differential casing is located in the bevel housing 1 is adjusted, and then drive and sent out by 3 position of tooth
Raw movement, and then adjust by the backlash between tooth 3 and the main tooth so that the backlash after adjustment ensures the main tooth
With it is described by tooth 3 engage in operational process can smooth movements, avoid both positions of engagement produce deviation and in the process of running
Generation is uttered long and high-pitched sounds, you can is uttered long and high-pitched sounds with further reduction.Further preferred technical solution is on the basis of prior art scheme：Institute
State and bearing cap 12 is provided with differential bearing 8, the bearing cap 12 is detachably fixed with the differential bearing 8 and is connected, the tune
Whole nut 9 is removably fixed between the bevel housing 1 and the bearing cap 12.In this way, bearing cap 12 and the difference
Fast bearing 8 is fixed, and the adjusting nut 9 is detachably secured between the bevel housing 1 and the bearing cap 12.This
9 position of adjusting nut is adjustably arranged on the bevel housing 1 described in sample, thus by screw thread rotation connection inwardly or
Person moves out, and then drives the bearing cap 12 to move inward or outward, drive semiaxis 4 promote the differential casing to
It is interior or be displaced outwardly, and then adjust by the backlash between tooth 3 and main tooth, ensure that reduction utters long and high-pitched sounds and resonates.In above skill
Further preferred technical solution is on the basis of art scheme：State 4 left and right ends portion of semiaxis and pass through supporting methods with rear-guard axle housing
Orchid 15 is rotatably connected, and the medial surface of the pivot flange 15 is sealed with the rear-guard axle case assy left and right ends to be fixed.This
Sample, 4 rotatable support of semiaxis can be arranged in rear-guard axle case assy by the pivot flange 15 of setting, and the pivot flange 15
Medial surface with the rear-guard axle case assy left and right ends sealing fixation be to avoid water or dust from entering rear-guard axle case assy
The internal and transmission of influence power and moment of torsion.Further preferred technical solution is on the basis of previous technique scheme：The branch
Be provided with oil sealing 13 and dust cover 14 between staying orchid 15 and rear-guard axle case assy left and right ends, the oil sealing 13 with it is described dust-proof
Cover 14 is sheathed on the semiaxis 4, and 13 one side of oil sealing offsets with the pivot flange 15,14 side of dust cover
Face offsets with the pivot flange 15 sealing.Can be by pivot flange 15 and the rear-guard bridge using oil sealing 13 and dust cover 14
The sealing of housing assy left and right ends portion is fixed, and can be entered to avoid dust, is further ensured that 4 rotating operation of semiaxis.Further
Preferably technical solution is：The differential bearing 8 is fixedly connected with the bearing cap 12 by bolt 25.Bolt 25 is fixed conveniently
Disassemble and install and cost is low.
A kind of automobile rear driving axle assembly of the utility model, please refers to Fig.1 into the related each figures of Figure 10 related each figure,
It can also be on the basis of previous technique scheme：The differential casing includes the differential mechanism left shell half 10 fastened and differential mechanism is right
Half-shell 11,10 right part of differential mechanism left shell half and 11 left part outer edge of the differential mechanism right half-shell are with described by tooth 3
It is fixed.So described differential mechanism left shell half 10 and the differential mechanism right half-shell 11 form the differential casing after fastening.And by
Tooth 3 is fixed with the differential mechanism right half-shell 11 and the differential mechanism left shell half 10, can be with when so rotation at a slow speed by tooth 3
Drive the differential mechanism left shell half 10 and the differential mechanism right half-shell 11 while rotate.Further preferred technical solution is：Institute
State 10 right part of differential mechanism left shell half and 11 left part of differential mechanism right half-shell and be equipped with a circle connection ring, the differential mechanism is left
The connection ring of half-shell 10 is docked with the connection ring of the differential mechanism right half-shell 11, then with the connection ring pair set by 3 ring of tooth
Connect, three is fixed together by least two bolts 25 set by uniform ring.Such fixed form fixation is than stronger, power
Transmitted uniformly with moment of torsion, and driven the differential mechanism right half-shell 11 and the differential mechanism left shell half 10 while rotated by tooth 3.
A kind of automobile rear driving axle assembly of the utility model, please refers to Fig.1 into the related each figures of Figure 10 related each figure,
It can also be on the basis of previous technique scheme：The main tooth includes main tooth teeth portion 16 and main ratch portion 17, the main ratch portion
17 lower ends are integrally formed or are fixedly connected with main 16 center of tooth teeth portion, and the main tooth teeth portion 16 is with described by 3 company of engagement of tooth
Connect, main 17 top of ratch portion is detachably fixed with the connecting flange 2, and described main 17 tops in ratch portion subtract with the master
Fast device housing 1 seals rotatable fixation.In this way, the main ratch portion 17 is detachably fixed with the connecting flange 2, and the master
Tooth teeth portion 16 is engaged with by tooth 3, is realized connecting flange 2 and is driven the main tooth spiral to turn, and main tooth is engaged with by tooth 3, and then will be anxious
Fast translating rotation realizes that moment of torsion transmission and direction of rotation change to rotate at a slow speed.On the basis of previous technique scheme further
Preferably technical solution is：Main tooth upper bearing (metal) 19, spacer cylinder 18 and master are from top to bottom arranged with the main ratch portion 17 successively
Tooth lower bearing 20, the main tooth upper bearing (metal) 19, the spacer cylinder 18 and the main tooth lower bearing 20 are both secured to the main deceleration
In device housing 1, the main ratch portion 17 is rotatably connected in the main tooth upper bearing (metal) 19, spacer cylinder 18 and main tooth lower bearing 20
Centre.The effect of main tooth upper bearing (metal) 19 and main tooth lower bearing 20 is set to be both the support main ratch portion 17 and avoid the master
Wear in ratch portion 17.Spacer cylinder 18 between main tooth upper bearing (metal) 19 and lower bearing 20 can provide appropriate pretightning force for bearing.
It can also be on the basis of previous technique scheme：Main 17 top of ratch portion passes through the oil that is sheathed in the main ratch portion 17
Seal 13 and be sealingly fastened in 1 top of bevel housing, set between the oil sealing 13 and the connecting flange 2 at position
There is dust cover 14,13 outer wall of oil sealing is fixed with 1 top inner wall of bevel housing sealing, and the lid of dust cover 14 is set
In 13 top of oil sealing.In this way, ensure, in the top of bevel housing 1 sealing and dust-proof, to avoid dust and water from into master subtracting
The operation of each operation component is influenced in fast device housing 1.Main 17 top of ratch portion is by being sheathed in the main ratch portion 17
Oil sealing 13 and be sealingly fastened in 1 top of bevel housing, between the oil sealing 13 and the connecting flange 2 at position
Dust cover 14 is provided with, 13 outer wall of oil sealing is fixed with 1 top inner wall of bevel housing sealing, the dust cover 14
It is covered on 13 top of oil sealing.
It is above-mentioned that only several specific embodiments in the utility model are illustrated, but can not be as the utility model
Protection domain, equivalent change or modification or equal proportion amplification or contracting made by every design spirit according in the utility model
It is small etc., it is deemed to fall the scope of protection of the utility model.
Claims (10)
- A kind of 1. automobile rear driving axle assembly, it is characterised in that：Including rear-guard axle case assy and to be arranged at the rear-guard axle housing total Into the main gearbox assembly of central position, the main gearbox assembly includes connecting flange, bevel housing, is arranged at institute State the main tooth in final drive casing body, be rotatably connected by tooth, differential assembly and respectively in described differential assembly or so two The semiaxis of sidepiece, the connecting flange are fixed with the main tooth, and the main tooth is angular wheel, described to be nibbled by tooth and the main tooth Close and fix, the main tooth is mutually perpendicular to described by the central axis of tooth, and the differential assembly includes differential casing, is located at The axle shaft gear in left and right ends portion and four planetary gears between two axle shaft gears in the differential carrier body, The planetary gear is vertical with two axle shaft gears, each planetary gear respectively with two axle shaft gear one sides Engagement connection, each planetary gear are rotatably disposed in the differential carrier body, another side of axle shaft gear point Connection is not detachably fixed with the corresponding semiaxis, the semiaxis outer end is each passed through the left and right of the rear-guard axle case assy It is detachably fixed behind end with corresponding tire, described to be detachably fixed by tooth and the differential carrier outer rim, the company Acting flange and the main tooth position are described by tooth and the differential assembly position at the rear-guard axle case assy overcentre position In the middle part of the rear-guard axle case assy.
- A kind of 2. automobile rear driving axle assembly according to claim 1, it is characterised in that：The rear-guard axle case assy includes Two rear-guard upper casings, rear-guard lower casing and rear-guard rear cover, the rear-guard upper casing dock fixation with the rear-guard lower casing, on the rear-guard Shell offers mounting hole with the rear-guard lower casing center, can be with the rear-guard lower casing on the rear-guard rear cover and the rear-guard Mounting hole is fixed, the position of the rear-guard rear cover and the differential assembly position correspondence.
- A kind of 3. automobile rear driving axle assembly according to claim 2, it is characterised in that：The rear-guard rear cover shape is water chestnut Shape.
- A kind of 4. automobile rear driving axle assembly according to claim 1, it is characterised in that：The bevel housing lower part Radial ribs are provided with outer wall.
- A kind of 5. automobile rear driving axle assembly according to Claims 1-4 any one claim, it is characterised in that： Four planetary gear uniform rings are arranged in the differential carrier body, and the interval angles between the adjacent planetary gear are 90°。
- A kind of 6. automobile rear driving axle assembly according to Claims 1-4 any one claim, it is characterised in that： Set on the differential casing at the adjacent planetary gear interval location and offer installing technological hole, the differential Four installing technological holes are equipped with device housing, the installing technological hole uniform ring is arranged on the differential casing.
- 7. according to a kind of automobile rear driving axle assembly described in Claims 1-4 any one claim, it is characterised in that： Each semiaxis inner end is arranged with differential bearing, and the semiaxis is rotatably connected in the differential bearing, the differential Bearing medial extremity is fixed with the left and right ends portion of the differential casing respectively, and the outer end of the differential bearing is provided with adjustment Nut, the adjusting nut are detachably fixed with the bevel housing position adjustable.
- A kind of 8. automobile rear driving axle assembly according to claim 7, it is characterised in that：It is provided with the differential bearing Bearing cap, the bearing cap are fixedly connected with the differential bearing, and the adjusting nut is removably fixed in the main reducing gear Between housing and the bearing cap.
- A kind of 9. automobile rear driving axle assembly according to claim 8, it is characterised in that：Semiaxis left and right ends portion is equal Be rotatably connected with the rear-guard axle case assy by pivot flange, the medial surface of the pivot flange with the rear-guard axle housing The sealing of assembly left and right ends is fixed.
- A kind of 10. automobile rear driving axle assembly according to claim 9, it is characterised in that：The pivot flange with it is described Oil sealing and dust cover are provided between rear-guard axle case assy, the oil sealing is sheathed on the semiaxis with the dust cover, institute State oil sealing one side to offset with the pivot flange, the dust cover one side offsets with pivot flange sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721218177.4U CN207274294U (en) | 2017-09-21 | 2017-09-21 | A kind of automobile rear driving axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721218177.4U CN207274294U (en) | 2017-09-21 | 2017-09-21 | A kind of automobile rear driving axle assembly |
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| Publication Number | Publication Date |
|---|---|
| CN207274294U true CN207274294U (en) | 2018-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721218177.4U Active CN207274294U (en) | 2017-09-21 | 2017-09-21 | A kind of automobile rear driving axle assembly |
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| Country | Link |
|---|---|
| CN (1) | CN207274294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532335A (en) * | 2017-09-21 | 2019-03-29 | 上汽通用五菱汽车股份有限公司 | A kind of automobile rear driving axle assembly |
-
2017
- 2017-09-21 CN CN201721218177.4U patent/CN207274294U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532335A (en) * | 2017-09-21 | 2019-03-29 | 上汽通用五菱汽车股份有限公司 | A kind of automobile rear driving axle assembly |
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