CN201045017Y - Rear axle assembly for multifunctional automobile - Google Patents
Rear axle assembly for multifunctional automobile Download PDFInfo
- Publication number
- CN201045017Y CN201045017Y CNU2006201613244U CN200620161324U CN201045017Y CN 201045017 Y CN201045017 Y CN 201045017Y CN U2006201613244 U CNU2006201613244 U CN U2006201613244U CN 200620161324 U CN200620161324 U CN 200620161324U CN 201045017 Y CN201045017 Y CN 201045017Y
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- assembly
- shaft
- axle
- friction plate
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Abstract
The utility model relates to a rear bridge assembly for multi-purpose vehicles (for short, MPV vehicle) use, comprising a main speed-reducer assembly of the rear bridge 4 and a left and right half-shaft assembly 19, and the end portions of a half shaft of the rear bridge 20 are respectively connected with a braking disc assembly 21. The utility model is characterized in that a differential arranged in the main speed-reducer assembly of the rear bridge 4 employs a slip-proof differential, a driving shaft 1 is sleeved with a elastic and compressible isolating-sleeve 5, a pair of preloading springs 13 are arranged between two half-shaft gears arranged in the slip-proof differential, two ends of the preloading springs 13 are respectively provided with a spring baffle 14, and a set of driving friction plates 9 and driven friction plates 10 which are in alternative arrangement is arranged on the half-shaft gears. The utility model has the advantages that the slip-proof differential of the rear bridge is capable of ensuring the large part of torque to be assigned to the driving wheel arranged at the lateral with a better attachment condition when a left driving wheel and a right driving wheel are different in attachment on the ground, thereby improving trafficability characteristic, dragging property and safety of driving of the car. The utility model has the advantages of extremely compact and simple integral structure, stable transferring, small noise, and wide application range.
Description
Technical field:
The utility model relates to a kind of vehicle rear axle assembly, the back axle assembly of particularly a kind of multi-purpose vehicle(MPV) (multi-Purpose Vehicles is called for short the MPV car).
Background technology:
Widely used in the automobile at present is the back axle of being furnished with symmetrical bevel differential and rigidity spacer.Diff in this back axle uses sun and planet gear, realizes the differential of left and right sides semiaxis.The diff of this structure, can only mean allocation torque between the semiaxis of the left and right sides, thereby can't realize that the difference between the semiaxis of the left and right sides turns round, make automobile on the bad road surface of the condition of adhering to, particularly the crossing ability on two adhesion valuies road surface is very poor, has a strong impact on the car opertion performance.Also have a kind of application more widely the anti-slip differential apparatus be differential locking-device, when automobile one side drive wheel is slided, can utilize differential locking-device to make the diff locking, polishing differential action and realize anti-skidding.It needs to stop just can carry out usually, and bad manipulation is also inconvenient.In addition, anti-skid final drive such as dental formula differential that adopts on some special car and turbine and worm formula diff.Though realizing antiskid function in varying degrees, complicated version and higher manufacturing cost factor, field of application is subjected to certain limitation.Extensively retrieve at the problems referred to above, still find no the anti-case of solution of effect.
The utility model content:
The purpose of this utility model is exactly the back axle assembly of a kind of MPV of the being used for car that provides in order to overcome the above-mentioned shortcoming that prior art exists.
To achieve these goals, the utility model has adopted following technology to prevent case:
A kind of multi-purpose vehicle(MPV) (multi-Purpose Vehicles that is used for, abbreviation MPV car) back axle assembly, it comprises rear-end gear reduction assembly and left and right half assembly, left and right rear axle shaft end connects brake disk assembly respectively, it is characterized in that the diff in the described rear-end gear reduction assembly adopts anti-skid final drive, be arranged with elastomeric compressible spacer on the axle drive shaft in the rear-end gear reduction assembly, the two ends of compressible spacer cooperate with axle drive shaft backup bearing swelling in the bevel housing respectively.Be provided with a pair of preloading spring between two axle side gears in the described anti-skid final drive, the two ends of preloading spring are respectively equipped with a spring stop that matches, each spring stop forms pretension with the left and right half gear respectively and cooperates, on the left and right half gear, be respectively equipped with one group of active friction plate of alternately arranging and from movable friction plate, link to each other with axle side gear from movable friction plate, active friction plate links to each other with the anti-skid final drive housing.
Advantage of the present utility model is:
The active friction plate of being set up of alternately installing, from movable friction plate and preloading spring, when there is speed discrepancy in the left and right sides of back axle semiaxis, rear axle shaft torque meeting is shifted, realized the self-locking skidproof of diff stability and safety, can be implemented in left and right sidesing driving wheel adheres to not simultaneously on ground, manage to make most of torque, or even all torque distribution is adhered to the reasonable side drive wheel of condition, thereby improved crossing ability, traction property and the driving safety of automobile.Next is installation form and the installation dimension that has adopted the homotype open differential identical, can realize the choosing dress, thereby have good commonality and interchangeability.Do not need the manipulation of chaufeur during work, can carry out non-slip operation automatically according to condition of road surface voluntarily.Integral structure is very compact succinct, and anufacturability is good, and cost is moderate.Compact to design, the processing request height, the ABS anti-lock device is adopted in braking, and stable drive, noise are little, applied widely.
Description of drawings:
Fig. 1 is the cutaway view of back axle assembly of the present utility model:
Fig. 2 is the cutaway view of the anti-skid final drive in the main gearbox assembly among Fig. 1;
Fig. 3 is the cutaway view of the compressible spacer among Fig. 1;
Fig. 4 is the distressed structure of the compressible spacer of Fig. 3;
Fig. 5 is the cutaway view of the axle side gear among Fig. 2;
Fig. 6 is the front view from movable friction plate among Fig. 2;
Fig. 7 is the front view of the spring stop among Fig. 2;
Fig. 8 is the birds-eye view among Fig. 7;
Fig. 9 is that the master of the active friction plate among Fig. 2 looks;
Figure 10 is the block diagram of the friction lining guide pin bushing among Fig. 2.
The specific embodiment:
The utility model mainly is to be made of following three parts: one, rear-end gear reduction assembly; Two, left and right half assembly; Three, brake disk assembly.
One, the rear-end gear reduction assembly mainly comprises: 1, drive shaft assembly, 2, the anti-skid final drive assembly, 3, final drive casing.
1, driving-shaft assembly:
As shown in Figure 1, driving-shaft assembly is to be made of axle drive shaft 1, driving gear 7, driving gear neck bearing 6, driving gear outer bearing 3, compressible spacer 5, axle drive shaft flange assembly 2, the structure of wherein compressible spacer 5 as shown in Figure 3, it has one section conical section 5a, has the certain elastic deformation ability when compressible spacer 5 pressurizeds.Compressible spacer 5 also can be a structure shown in Figure 4, and its middle part is provided with bossing 5c, also has the certain elastic deformation ability during pressurized.As everyone knows, the pretension that holds of rear axle reductor main pinion is very big to the performance impact of whole bridge.Use the rigidity spacer that main pinion is held pretension and bring very burden, often will try to add repeatedly pad repeatedly and just can adjust to suitable predetermincd tension, reduce production efficiency, increase labour intensity.And under the inappropriate situation of predetermincd tension, can bring serious problem.Predetermincd tension is excessive, can reduce driving efficiency, causes bearing heating, influences bearing life, even burns to death.If predetermincd tension is too small, can cause main pinion to hold end float misalignment, influence is main is meshed by tooth, even beats tooth.If use compressible spacer, the problems referred to above just are readily solved, even the relative tolerance on dimensional chain for assembly can relax, and help Economics of Processing.
2, differential assembly:
The utility model is the further improvement to existing open differential.
For overcoming the deficiency of existing open differential, the utility model provides a kind of left and right sidesing driving wheel that is implemented in to adhere to not simultaneously on ground, manage to make most of torque, or even all torque distribution is adhered to the reasonable side drive wheel of condition, thereby improved the anti-skid final drive of crossing ability, traction property and the driving safety of automobile.
This automobile-used anti-skid final drive, as shown in Figure 2, at two a minute unification is constituted in the diff shell 16 formed housing inner cylinder cavitys, two rear axle shaft gears 11 about being equipped with symmetrically, be arranged with a pair of spring stop 14 between two rear axle shaft gears 11, two coil springs 13 are housed between two spring stops, principal and subordinate's movable friction plate 9 that symmetry is equipped with friction lining guide block 15 and alternately installs on the left and right sides rear axle shaft gear 11 axial outer cylinders, 10, active friction plate 9 is connected with friction lining guide block 12, friction lining guide block 15 is connected with diff shell 16, be connected cooperation from 10 of movable friction plates with rear axle shaft gear 11, be provided with the planetary wheel 12 that compensating-gear shaft 17 matches in the housing 16.
3, final drive casing, as shown in Figure 1, axle drive shaft 1 and backup bearing 3,6 thereof are equipped with in final drive casing 4 tops, are provided with anti-skid final drive in the lower lumen, the diff two ends are provided with bearing and cooperate with final drive casing 4, main gear 7 on the axle drive shaft 1 and 18 engagements of the gear of anti-skid final drive.
Above-mentioned from movable friction plate 10 as shown in Figure 6, wherein be provided with spline 10a, it matches with spline 11a on the rear axle shaft gear 11, active friction plate 9 as shown in Figure 9, which is provided with a pair of protruding 9a, after principal and subordinate's movable friction plate 9,10 was alternately arranged, the protruding 9a on the active friction plate 9 was stuck between the flange 15a in the friction lining guide block 15 (as shown in figure 10), and friction lining guide block 15 is provided with in the differential casing.Spring stop 14 is shown in Fig. 7, protruding 8, and its center is provided with that hole 14c, two ends are respectively equipped with spring perch 14a, upper and lower side is respectively equipped with the breach 14b that passes through for compensating-gear shaft 17.
Anti-skid final drive assembly working process is as follows; When the back axle left and right sides semiaxis in rear axle shaft gear 11 axis holes did not have speed discrepancy, torque mean allocation on the semiaxis of the back axle left and right sides of diff shell 16 was passed in planetary wheel 12 not rotations by driving system by driving engine.Torque this moment is to pass to back axle left and right sides semiaxis through compensating-gear shaft 17, planetary wheel 2, rear axle shaft gear 11; When there is speed discrepancy in back axle left and right sides semiaxis, planetary wheel 12 rotations, the torque of passing to diff shell 16 passes to back axle left and right sides semiaxis by two lines.One the tunnel is to pass to rear axle shaft through compensating-gear shaft 17, planetary wheel 12, rear axle shaft gear 11; Another road is then passed through active friction plate 9, is passed to rear axle shaft from movable friction plate 10, rear axle shaft gear 12.Because the active friction plate 9 that matches with diff shell 16 and what match with rear axle shaft gear 12 must be that rotating speed is different from movable friction plate 10, and compensating-gear shaft 17 matches with differential gear box, therefore there is the active friction plate 9 of relative rotation and transmitted the pressing force of the spring that comes from axle side gear 11 and compress from movable friction plate 10, produce friction moment, be delivered on the semiaxis of the back axle left and right sides by rear axle shaft gear 11 again.This friction moment direction is oppositely opposite with the fast rear axle shaft rotation of changeing, and is identical with the rear axle shaft hand of rotation of slow-speed.The place will realize safe, reliable and stable self-locking skidproof greater than the fast wheel torque that changes with the torque of slow-speed wheel.Be not difficult to find out: the friction moment direction of taking turns a side fast is opposite with the hand of rotation of fast runner, estimates its value for negative; And the friction moment direction of low-rotate speed one side is identical with the hand of rotation of low-rotate speed, estimates its value for just.This situation makes the drive torque of the drive torque of slow-speed wheel greater than fast runner just as the part drive torque is transferred to the slow-speed wheel by quick wheel.So also just improved the skid resistance of automobile.
Two, left and right half assembly and brake disk assembly, as shown in Figure 1, because of the left and right half assembly is symmetrical, now be the row explanations with the left half axle, the semiaxis assembly on the left side comprises rear-axle casing 19, and it and main gearbox assembly bolt together are provided with left half axle 20 in the rear-axle casing 19, its right-hand member and the axle side gear in the main gearbox assembly are connected with spline and spline, and its left end is connected with brake disk assembly 21.
The utility model has also increased anti-lock braking system(ABS) and has been called for short ABS, is based on the attachment characteristic between motor tire and the road surface and the hightech brake system developed.The requirement that prevents wheel in the emergency brake process " locking " and occur breakking away is set out, and reaching raising automobile enforcement stability and direction control is the active safety device of purpose.According to the analysis of motor traffic accidents, loses stability and road-holding property are the one of the main reasons that has an accident during emergency brake, and be particularly even more serious on wet and slippery road surface.Anti-skid brake system ABS is exactly for improving the recent development measure of braking safety under this operating mode, so be commonly referred to as the active safety device.Must dispose the ABS anti-lock device for the MPV vehicle.The design of this novel back axle, collection anti-skid final drive, compressible elastomeric spacer and ABS system and the whole body, improved the safety that original automobile is exercised under mal-condition, strengthened the automobile normal brake application stationarity, shortened stopping distance, from having improved the Tyte Wear situation to a great extent, prevented main generation of being beaten the tooth fault by tooth effectively.
Claims (2)
1. back axle assembly that is used for multi-purpose vehicle(MPV), it comprises rear-end gear reduction assembly and left and right half assembly, left and right rear axle shaft end connects brake disk assembly respectively, it is characterized in that the diff in the described rear-end gear reduction assembly adopts anti-skid final drive, be arranged with elastomeric compressible spacer on the axle drive shaft in the rear-end gear reduction assembly, the two ends of compressible spacer cooperate with axle drive shaft backup bearing swelling in the bevel housing respectively.
2. the back axle assembly that is used for multi-purpose vehicle(MPV) according to claim 1, it is characterized in that being provided with a pair of preloading spring between two axle side gears in the anti-skid final drive, the two ends of preloading spring are respectively equipped with a spring stop that matches, each spring stop forms pretension with the left and right half gear respectively and cooperates, on the left and right half gear, be respectively equipped with one group of active friction plate of alternately arranging and from movable friction plate, active friction plate links to each other with the anti-skid final drive housing, links to each other with axle side gear from movable friction plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201613244U CN201045017Y (en) | 2006-12-03 | 2006-12-03 | Rear axle assembly for multifunctional automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201613244U CN201045017Y (en) | 2006-12-03 | 2006-12-03 | Rear axle assembly for multifunctional automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201045017Y true CN201045017Y (en) | 2008-04-09 |
Family
ID=39308492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201613244U Expired - Lifetime CN201045017Y (en) | 2006-12-03 | 2006-12-03 | Rear axle assembly for multifunctional automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201045017Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748625A (en) * | 2019-10-29 | 2020-02-04 | 一汽解放汽车有限公司 | Limited slip differential structure |
-
2006
- 2006-12-03 CN CNU2006201613244U patent/CN201045017Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748625A (en) * | 2019-10-29 | 2020-02-04 | 一汽解放汽车有限公司 | Limited slip differential structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hefei AAM Automotive Driveline & Chassis System Co.,Ltd. Assignor: HeFei Automobile Axle Co., Ltd Contract record no.: 2010340000137 Denomination of utility model: Rear axle assembly for multifunctional automobile Granted publication date: 20080409 License type: Exclusive License Record date: 20100730 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080409 |
|
| EXPY | Termination of patent right or utility model |