CN103697138A - Differential for passenger car - Google Patents
Differential for passenger car Download PDFInfo
- Publication number
- CN103697138A CN103697138A CN201310742324.8A CN201310742324A CN103697138A CN 103697138 A CN103697138 A CN 103697138A CN 201310742324 A CN201310742324 A CN 201310742324A CN 103697138 A CN103697138 A CN 103697138A
- Authority
- CN
- China
- Prior art keywords
- sun gear
- wheel
- planet
- gear
- passenger vehicle
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
- F16H48/42—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon
Abstract
The invention relates to a differential for a passenger car. The differential comprises a large sun gear, a small sun gear, three planet gear sets and a planet carrier which are arranged in an axle housing, the large sun gear is connected with a left half axle of the passenger car movably, the small sun gear is connected with a right half axle of the passenger car movably, the large sun gear and the small sun gear drive through the three planet gear sets which are arranged on the planet carrier, each planet gear set comprises a first planet gear and a second planet gear, each first planet gear is mashed with the large sun gear and the corresponding second planet gear, and the small sun gear is meshed with the second planet gears. Original four planet gears and an axle structure are omitted, the six planet gears and the two sun gears are meshed and drive so as to realize differential drive of the passenger car, all of the planet gears and the sun gears are spur gears, the six planet gears are meshed with the two sun gears, the two sun gears are enabled to get as close as possible, and axial distance of the two half axles is shortened as much as possible, so that size of the axle housing is reduced, weight is reduced, and development of light weight of the passenger car is benefitted.
Description
technical field:
The present invention relates to the component technical field that passenger vehicle transmission is used, be specifically related to a kind of passenger vehicle differential mechanism.
background technique:
Along with the fast development of bus industry, passenger vehicle lightweight is one of direction of main research and development in recent years.At present, passenger vehicle manufacturing enterprise is mainly by realizing passenger vehicle lightweight level with the passenger vehicle of material minimizing more efficiently component weight, reducing the weight of passenger vehicle car load.Differential mechanism is the requisite component of passenger vehicle, existing passenger vehicle is mainly comprised of four planet wheels, two sun gears and cross axle structure with differential mechanism, four planet wheels are assemblied on cross axle, two sun gears are connected with two semiaxis of passenger vehicle respectively, two sun gears and four planet wheel engagement driving, realize passenger vehicle differential drive, four planet wheels and two sun gears are bevel gear.In bus driving process, the planet wheel of differential mechanism and sun gear need to bear higher load, due to the particularity of differential mechanism product structure, aspect differential art, there is no great improvement all the time.In bus driving process, the bevel gear of differential mechanism need to be born higher load, so the lightweight of differential mechanism cannot realize by conversion materials more.And, four planet wheels of existing differential mechanism are arranged between two sun gears, this just causes needing larger distance between two sun gears, cause differential mechanism volume larger, need larger axle housing space to hold differential mechanism, increase axle housing weight and space and arrange difficulty, can not meet passenger vehicle lightweight needs.
summary of the invention:
In sum, in order to overcome the deficiency of prior art problem, the invention provides a kind of passenger vehicle differential mechanism, it has cancelled original four planet wheels and cross axle structure, adopt six planet wheels and two sun gear engagement driving to realize passenger vehicle differential drive, planet wheel and sun gear all adopt spur-gear wheel, spur-gear wheel and two sun gears of six planet wheel engagements, make two sun gears close as much as possible, shorten as much as possible the axial distance of two semiaxis, thereby reduce axle housing volume, weight reduction, is conducive to the light-weighted development of passenger vehicle.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of passenger vehicle differential mechanism, wherein: comprise the large sun gear, small sun gear, planetary gear set and the planetary wheel carrier that are arranged in axle housing, large sun gear is flexibly connected with passenger vehicle left half axle, small sun gear is flexibly connected with passenger vehicle right axle shaft, large sun gear and small sun gear are by three groups of planetary gear set transmissions, planetary gear set is arranged on planetary wheel carrier, described planetary gear set comprises the first row star-wheel and the second planet wheel, the first row star-wheel meshes large sun gear and the second planet wheel, and small sun gear meshes the second planet wheel.
Technological scheme of the present invention can also be achieved in that described large sun gear, small sun gear, the first row star-wheel and the second planet wheel are spur-gear wheel.
Technological scheme of the present invention can also be achieved in that three groups of described planetary gear set are uniformly distributed around large sun gear 2.
Technological scheme of the present invention can also be achieved in that described large sun gear is flexibly connected by bearing respectively with planetary wheel carrier with planetary wheel carrier, the second planet wheel with passenger vehicle right axle shaft, the first row star-wheel with passenger vehicle left half axle, small sun gear.
Technological scheme of the present invention can also be achieved in that described the first row star-wheel meshes large sun gear and the second planet wheel simultaneously, the length of action L of large sun gear and the first row star-wheel, the length of action M of the second planet wheel and the first row star-wheel, the width of L and M sum < the first row star-wheel.
Beneficial effect of the present invention is:
1, the present invention has cancelled original four planet wheels and cross axle structure, adopt six planet wheels and two sun gear engagement driving to realize passenger vehicle differential drive, planet wheel and sun gear all adopt spur-gear wheel, spur-gear wheel and two sun gears of six planet wheel engagements, make two sun gears close as much as possible, shorten as much as possible the axial distance of two semiaxis, thereby reduce axle housing volume, weight reduction, is conducive to the light-weighted development of passenger vehicle.
2, planet wheel of the present invention and sun gear all adopt spur-gear wheel, and the relative bevel gear of spur-gear wheel is easy to manufacture, low cost of manufacture, and working life is relatively long, is guaranteeing, on the basis of passenger vehicle differential drive, to reduce as much as possible passenger vehicle cost of production and production difficulty.
3, the present invention meshes the second planet wheel and large sun gear by the first row star-wheel simultaneously, the length of action L of large sun gear and the first row star-wheel, the length of action M of the second planet wheel and the first row star-wheel, the width of the summation < the first row star-wheel of L and M.By this kind of engagement system, make two sun gears close as much as possible, thereby make differential design compact, can reduce the volume that accommodates axle housing of the present invention, thereby alleviate axle housing weight, reach the object that alleviates passenger vehicle weight.
accompanying drawing explanation:
Fig. 1 is structural principle schematic diagram of the present invention;
Fig. 2 is the circumferential distribution schematic diagram of planetary gear set of the present invention;
Fig. 3 is large sun gear of the present invention, the first row star-wheel, the second planet wheel and small sun gear mesh schematic representation.
embodiment:
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, Fig. 2, shown in Fig. 3, a kind of passenger vehicle differential mechanism, comprise the large sun gear 2 being arranged in axle housing 1, small sun gear 3, planetary gear set and planetary wheel carrier 4, large sun gear 2 is flexibly connected by bearing with passenger vehicle left half axle 5, small sun gear 3 is flexibly connected by bearing with passenger vehicle right axle shaft 6, large sun gear 2 passes through three groups of planetary gear set transmissions with small sun gear 3, three groups of planet wheels are uniformly distributed around large sun gear 2, planetary gear set is arranged on planetary wheel carrier 4, described planetary gear set comprises the first row star-wheel 7 and the second planet wheel 8, the first row star-wheel 7 large sun gear 2 of engagement and the second planet wheels 8, small sun gear 3 engagement the second planet wheels 8, large sun gear 2, small sun gear 3, the first row star-wheel 7 and the second planet wheel 8 are spur-gear wheel, the first row star-wheel 7 meshes large sun gear 2 and the second planet wheel 8 simultaneously, the length of action L of large sun gear 2 and the first row star-wheel 7, the length of action M of the second planet wheel 8 and the first row star-wheel 7, the width of L and M sum < the first row star-wheel 7.
During indifferential motion, left half axle 5 and right axle shaft 6 drive respectively large sun gear 2 and small sun gear 3 revolution, and large sun gear 2 drives 7 revolution of the first row star-wheel, and small sun gear 3 drives the second planet wheel 8 revolution, by planet wheel, drives planetary wheel carrier 4 revolution.
During differential motion, when left half axle 5 low speed or locking, be connected large sun gear 2 with it by low-speed motion or locking, produce rotation with the first row star-wheel 7 of large sun gear 2 engagements, the first row star-wheel 7 produces revolution with planetary wheel carrier 4 simultaneously, produce rotation with the second planet wheel 8 of the first row star-wheel 7 engagements, the second planet wheel 8 produces revolution with planetary wheel carrier 4 simultaneously, produces revolution with the small sun gear 3 of the second planet wheel 8 engagements.Produce thus differential.When right axle shaft 6 low speed or locking, course of action of the present invention is contrary with said process.
Be noted that, above-described embodiment is to the explanation of technical solution of the present invention and unrestricted, other modification that is equal to replacement or makes according to prior art of affiliated technical field those of ordinary skill, as long as do not exceed thinking and the scope of technical solution of the present invention, within all should being included in interest field of the presently claimed invention.
Claims (5)
1. a passenger vehicle differential mechanism, it is characterized in that: comprise the large sun gear (2) being arranged in axle housing (1), small sun gear (3), planetary gear set and planetary wheel carrier (4), large sun gear (2) is flexibly connected with passenger vehicle left half axle (5), small sun gear (3) is flexibly connected with passenger vehicle right axle shaft (6), large sun gear (2) passes through three groups of planetary gear set transmissions with small sun gear (3), planetary gear set is arranged on planetary wheel carrier (4), described planetary gear set comprises the first row star-wheel (7) and the second planet wheel (8), the first row star-wheel (7) meshes large sun gear (2) and the second planet wheel (8), small sun gear (3) engagement the second planet wheel (8).
2. passenger vehicle differential mechanism according to claim 1, is characterized in that: described large sun gear (2), small sun gear (3), the first row star-wheel (7) and the second planet wheel (8) are spur-gear wheel.
3. passenger vehicle differential mechanism according to claim 1, is characterized in that: three groups of described planetary gear set are uniformly distributed around large sun gear (2).
4. passenger vehicle differential mechanism according to claim 1, is characterized in that: (2 are flexibly connected by bearing respectively with planetary wheel carrier (4) with planetary wheel carrier (4), the second planet wheel (8) with passenger vehicle right axle shaft (6), the first row star-wheel (7) with passenger vehicle left half axle (5), small sun gear (3) described large sun gear.
5. passenger vehicle differential mechanism according to claim 1, it is characterized in that: described the first row star-wheel (7) meshes large sun gear (2) and the second planet wheel (8) simultaneously, the length of action L of large sun gear (2) and the first row star-wheel (7), the length of action M of the second planet wheel (8) and the first row star-wheel (7), the width of L and M sum < the first row star-wheel (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310742324.8A CN103697138A (en) | 2013-12-30 | 2013-12-30 | Differential for passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310742324.8A CN103697138A (en) | 2013-12-30 | 2013-12-30 | Differential for passenger car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103697138A true CN103697138A (en) | 2014-04-02 |
Family
ID=50358770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310742324.8A Pending CN103697138A (en) | 2013-12-30 | 2013-12-30 | Differential for passenger car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103697138A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500687A (en) * | 2014-10-30 | 2015-04-08 | 张惠杰 | Torque guide differential |
| CN108240448A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Differential mechanism and vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201220597Y (en) * | 2006-02-17 | 2009-04-15 | 谢夫勒两合公司 | Speed differientiator with epicyclic gear box |
| CN201428791Y (en) * | 2009-07-02 | 2010-03-24 | 湖北万山宏业汽车零部件有限公司 | Parallel planetary spiral gear slip-limiting differential gear |
| CN102979879A (en) * | 2011-09-06 | 2013-03-20 | 伊顿公司 | Compact planetary differential gear set arrangement |
| CN203023426U (en) * | 2013-01-09 | 2013-06-26 | 天津天海同步科技股份有限公司 | Cylindrical gear power-shunting type limited slip differential |
| WO2013156498A1 (en) * | 2012-04-19 | 2013-10-24 | Schaeffler Technologies AG & Co. KG | Planetary gearbox comprising a differential |
| CN203756908U (en) * | 2013-12-30 | 2014-08-06 | 郑州精益达汽车零部件有限公司 | Differential for passenger car |
-
2013
- 2013-12-30 CN CN201310742324.8A patent/CN103697138A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201220597Y (en) * | 2006-02-17 | 2009-04-15 | 谢夫勒两合公司 | Speed differientiator with epicyclic gear box |
| CN201428791Y (en) * | 2009-07-02 | 2010-03-24 | 湖北万山宏业汽车零部件有限公司 | Parallel planetary spiral gear slip-limiting differential gear |
| CN102979879A (en) * | 2011-09-06 | 2013-03-20 | 伊顿公司 | Compact planetary differential gear set arrangement |
| WO2013156498A1 (en) * | 2012-04-19 | 2013-10-24 | Schaeffler Technologies AG & Co. KG | Planetary gearbox comprising a differential |
| CN203023426U (en) * | 2013-01-09 | 2013-06-26 | 天津天海同步科技股份有限公司 | Cylindrical gear power-shunting type limited slip differential |
| CN203756908U (en) * | 2013-12-30 | 2014-08-06 | 郑州精益达汽车零部件有限公司 | Differential for passenger car |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500687A (en) * | 2014-10-30 | 2015-04-08 | 张惠杰 | Torque guide differential |
| CN104500687B (en) * | 2014-10-30 | 2017-05-10 | 张惠杰 | Torque guide differential |
| CN108240448A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Differential mechanism and vehicle |
| CN108240448B (en) * | 2016-12-27 | 2019-12-10 | 比亚迪股份有限公司 | Differential and vehicle |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140402 |
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| RJ01 | Rejection of invention patent application after publication |