CN105909757A - Compact type differential - Google Patents
Compact type differential Download PDFInfo
- Publication number
- CN105909757A CN105909757A CN201610539343.4A CN201610539343A CN105909757A CN 105909757 A CN105909757 A CN 105909757A CN 201610539343 A CN201610539343 A CN 201610539343A CN 105909757 A CN105909757 A CN 105909757A
- Authority
- CN
- China
- Prior art keywords
- wheel
- gear
- sun
- planetary gear
- differential mechanism
- 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
Links
Classifications
-
- 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
-
- 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
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
- F16H2048/085—Differential gearings with gears having orbital motion comprising bevel gears characterised by shafts or gear carriers for orbital gears
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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
- F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
- F16H2048/106—Differential gearings with gears having orbital motion with orbital spur gears characterised by two sun gears
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a compact type differential. Sun wheels comprise a first sun wheel and a second sun wheel; a planet wheel set comprises a first planet wheel and a second planet wheel; the first planet wheel comprises a first meshing zone and a second meshing zone; the second planet wheel comprises a compound meshing zone and an optical-axis zone; the diameter of the first sun wheel is greater than that of the second sun wheel; the first sun wheel is meshed with the first meshing zone on the first sun wheel; the second meshing zone on the first planet wheel is positioned outside the outside circle of the second sun wheel; the second sun wheel is meshed with the compound meshing zone on the second planet wheel; the compound meshing zone is further meshed with the second meshing zone on the first planet wheel; and the optical-axis zone on the second planet wheel is positioned outside the outside circle of the first sun wheel. The compact type differential is used for reducing sun wheels and three meshing surfaces in each planet wheel set of a current cylindrical gear differential to be two, so that the purpose of reducing an axis dimension, reducing the volume and reducing the space usage is achieved, and therefore, the compacted and optimized design of the vehicle integrated layout is facilitated.
Description
Technical field
The present invention relates to a kind of differential mechanism, be specifically related to a kind of compact differential mechanism.
Background technology
Differential mechanism is indispensable vitals in automobile, and existing differential mechanism is mainly by an appropriate number of row
Star-wheel group, two sun gears, differential carrier and the planetary wheel carrier group that are connected with two semiaxis of vehicle respectively
Become.Planetary gear set is assemblied on planetary wheel carrier and between two sun gears, in each planetary gear set
Two planetary gears one are meshed with in two sun gears, another another with two sun gears
One is meshed, and two planetary gears self also engage each other, and the power that power transmission shaft transmission comes is according to concrete feelings
Condition, is transmitted to semiaxis by the engaged transmission between differential mechanism revolution and planetary gear rotation and sun gear,
Semiaxis band motor car wheel, it is achieved vehicle advances or turns.Existing differential mechanism limits due to said structure, general
Store-through is big at volume, quality heavy, take up room big determination, and space is arranged limited, affects miscellaneous part
Installation and optimization.
Summary of the invention
For the problems referred to above, it is desirable to provide a kind of compact differential mechanism.
The technical scheme of this compact differential mechanism is achieved in that
Described compact differential mechanism, including differential gear frame, the sun gear being arranged in differential gear frame, and
Being laid in some groups of planetary gear set of sun gear periphery, sun gear includes the first sun gear and second sun
Wheel, planetary gear set includes the first row star-wheel and the second planetary gear, the first row star-wheel include the first region of engagement and
Second region of engagement, the second planetary gear includes compound region of engagement and optical axis district；
Often group planetary gear set in, the first sun gear diameter be more than the second sun gear diameter, the first sun gear with
The first region of engagement on the first row star-wheel is meshed, and the second region of engagement on the first row star-wheel is positioned at second too
Outside sun wheel outside circle, the compound region of engagement on the second sun gear and the second planetary gear is meshed, and is combined and nibbles
Closing district to be also meshed with the second region of engagement on the first row star-wheel, the optical axis district on the second planetary gear is positioned at the
Outside one solar wheeling tooth tip circle.
Further, described differential gear frame both sides are all mated set casing, set casing by fixed cell with
Differential gear frame is fixing to be connected, and sun gear, planetary gear set are supported between two set casings.
Further, described the first row star-wheel, the second planetary gear two ends are provided with support shaft, set casing
Upper coupling is provided with corresponding support holes, and the first row star-wheel, the second planetary gear are all rotated even by support shaft
Connect in the support holes being arranged on two set casings.
Further, the first row star-wheel, the second planetary gear are connected on set casing by bearing.
Further, described planetary gear set is uniformly laid in sun gear periphery.
Further, described planetary gear set has three groups.
Further, described first sun gear is gear with positive correction, and the second sun gear is negative addendum modification gear,
And number of gear teeth is equal.
Further, described differential gear frame periphery is provided with the power teeth being meshed with power transmission shaft.
Further, described fixed cell is rivet or bolt pair.
Further, described set casing is prepared by plate stamping.
This compact differential mechanism is improved for the problem that existing differential mechanism exists and has been optimized, and first too
Sun wheel diameter is more than the second sun gear diameter, and the first row star-wheel and the first sun gear, the second planetary gear are homogeneous
Engagement, the second planetary gear and the second sun gear are meshed, wherein, with the first row star-wheel on the second planetary gear
The field of conjugate action engaged with the second sun gear on the field of conjugate action of engagement, the second planetary gear coincides, this kind of design
Sun gear in existing spur-gear differential and three fields of conjugate action often organized in planetary gear set are reduced to two
Individual, thus reached to reduce the purpose of axial dimension, and then reached the mesh reducing volume and taking up room
, the beneficially densification optimization design of vehicle integral layout.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's
Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.?
In accompanying drawing:
Fig. 1 is this compact differential design schematic diagram；
Fig. 2 is this compact differential mechanism decomposing schematic representation；
Fig. 3 is this compact differential mechanism sun gear and planetary gearsets assembly relation schematic diagram.
Description of reference numerals:
In figure: 1. the first sun gear, 2. the second sun gear, 3. the first row star-wheel, 4. the second planetary gear, 5.
Differential gear frame, 6. set casing, 7. fixed cell, 31. first region of engagements, 32. second region of engagements, 41. be combined
Region of engagement, 42. optical axis districts, 51. power teeth, 61. support holes.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
On " ", D score, "front", "rear", "left", "right", " vertically ", " level ",
" push up ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be for based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of the description present invention and simplifying and describe rather than instruction or dark
Show that device or the element of indication must have specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for describing
Purpose, and it is not intended that instruction or hint relative importance or implicit indicate indicated technical characteristic
Quantity.Thus, the feature defining " first ", " second " etc. can be expressed or impliedly wrap
Include one or more this feature.In describing the invention, except as otherwise noted, " multiple "
It is meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term
" install ", " being connected ", " connection " should be interpreted broadly, and connect, also for example, it may be fixing
Can be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.
For the ordinary skill in the art, can understand that above-mentioned term is in the present invention by concrete condition
In concrete meaning.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Compact differential mechanism provided by the present invention, as shown in Figures 1 to 3, including differential gear frame 5, if
It is placed in the sun gear in differential gear frame 5, and is laid in some groups of planetary gear set of sun gear periphery, too
Sun wheel includes the first sun gear 1 and the second sun gear 2, and planetary gear set includes the first row star-wheel 3 and second
Planetary gear 4, the first row star-wheel 3 includes the first region of engagement 31 and the second region of engagement 32, the second planetary gear 4
Including compound region of engagement 41 and optical axis district 42；
Often in group planetary gear set, the first sun gear 1 diameter is more than the second sun gear 2 diameter, first sun
Wheel 1 is meshed with the first region of engagement 31 on the first row star-wheel 3, and second on the first row star-wheel 3 nibbles
Close district 32 and be positioned at outside the second sun gear 2 outside circle, on the second sun gear 2 and the second planetary gear 4
Compound region of engagement 41 is meshed, compound region of engagement 41 also with the second region of engagement 32 on the first row star-wheel 3
Being meshed, the optical axis district 42 on the second planetary gear 4 is positioned at outside the first sun gear 1 outside circle.
This compact differential mechanism is improved for the problem that existing differential mechanism exists and has been optimized, and first too
Sun wheel 1 diameter is more than the second sun gear 2 diameter, the first row star-wheel 3 and first sun gear the 1, second row
Star-wheel 4 is all meshed, and the second planetary gear 4 is meshed with the second sun gear 2, wherein, and the second planetary gear
Engage with the second sun gear 2 on the field of conjugate action that engages with the first row star-wheel 3 on 4, the second planetary gear 4
The field of conjugate action coincides, and this kind of design by sun gear in existing spur-gear differential and is often organized in planetary gear set
Three fields of conjugate action be reduced to two, thus reached to reduce the purpose of axial dimension, and then reached to subtract
The densification optimization design of small size and the purpose taken up room, beneficially vehicle integral layout.
In this compact differential mechanism, described differential gear frame 5 both sides are all mated set casing 6, differential gear frame
5 are machined into by blank forging, in order to alleviate differential mechanism weight, it is preferred that described set casing 6 by
Plate stamping prepares；Set casing 6 is connected by fixed cell 7 is fixing with differential gear frame 5, sun gear,
Planetary gear set is supported between two set casings 6, and above-mentioned fixed cell 7 can select riveting as the case may be
Nail or bolt pair.
In this compact differential mechanism, above-mentioned support pattern concrete structure is as follows: described the first row star-wheel 3,
Second planetary gear 4 two ends are provided with support shaft, and on set casing 6, coupling is provided with corresponding support holes 61,
The first row star-wheel the 3, second planetary gear 4 is all rotationally connected by support shaft and is arranged on two set casings 6
In support holes 61.Further, in this compact differential mechanism, the first row star-wheel the 3, second planetary gear 4
It is connected on set casing 6 by bearing.
In this compact differential mechanism, described planetary gear set is uniformly laid in sun gear periphery, it is preferred that this
In compact differential mechanism, described planetary gear set has three groups.
In this compact differential mechanism, with above-mentioned sun gear and often group planetary gear set in comprise two fields of conjugate action
Design matches, identical in order to ensure both sides speed ratio, and described first sun gear 1 is gear with positive correction, the
Two sun gears 2 are negative addendum modification gear, and the two number of teeth is identical.
In this compact differential mechanism, described differential gear frame 5 periphery is provided with the power being meshed with power transmission shaft
Tooth 51, further up to reduction differential size, alleviates the purpose of differential mechanism weight.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in
Within protection scope of the present invention.
Claims (10)
1. a compact differential mechanism, including differential gear frame (5), is arranged in differential gear frame (5)
Sun gear, and be laid in some groups of planetary gear set of sun gear periphery, it is characterised in that: sun gear
Including the first sun gear (1) and the second sun gear (2), planetary gear set includes the first row star-wheel (3)
With the second planetary gear (4), the first row star-wheel (3) includes the first region of engagement (31) and the second region of engagement
(32), the second planetary gear (4) includes compound region of engagement (41) and optical axis district (42)；
Often in group planetary gear set, the first sun gear (1) diameter is more than the second sun gear (2) diameter, the
One sun gear (1) is meshed with the first region of engagement (31) on the first row star-wheel (3), first planet
The second region of engagement (32) on wheel (3) is positioned at outside the second sun gear (2) outside circle, second sun
Wheel (2) is meshed with the compound region of engagement (41) on the second planetary gear (4), compound region of engagement (41)
Also it is meshed with the second region of engagement (32) on the first row star-wheel (3), on the second planetary gear (4)
Optical axis district (42) is positioned at outside the first sun gear (1) outside circle.
Compact differential mechanism the most according to claim 1, it is characterised in that: described differential gear frame
(5) both sides are all mated set casing (6), and set casing (6) passes through fixed cell (7) and differential mechanism
Frame (5) is fixing to be connected, and sun gear, planetary gear set are supported between two set casings (6).
Compact differential mechanism the most according to claim 2, it is characterised in that: described first planet
Wheel (3), the second planetary gear (4) two ends are provided with support shaft, and set casing mates setting on (6)
Corresponding support holes (61), the first row star-wheel (3), the second planetary gear (4) is had all to pass through support shaft
It is rotationally connected in the support holes (61) being arranged on two set casings (6).
Compact differential mechanism the most according to claim 3, it is characterised in that: the first row star-wheel (3),
Second planetary gear (4) is connected on set casing (6) by bearing.
Compact differential mechanism the most according to claim 1, it is characterised in that: described planetary gear set
Uniformly it is laid in sun gear periphery.
Compact differential mechanism the most according to claim 1 or 5, it is characterised in that: described planet
Wheels have three groups.
Compact differential mechanism the most according to claim 1, it is characterised in that: described first sun
Wheel (1) is gear with positive correction, and the second sun gear (2) is negative addendum modification gear, and number of gear teeth is equal.
Compact differential mechanism the most according to claim 1, it is characterised in that: described differential gear frame
(5) periphery is provided with the power teeth (51) being meshed with power transmission shaft.
Compact differential mechanism the most according to claim 2, it is characterised in that: described fixed cell
(7) it is rivet or bolt pair.
Compact differential mechanism the most according to claim 2, it is characterised in that: described set casing (6)
Prepared by plate stamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539343.4A CN105909757A (en) | 2016-07-08 | 2016-07-08 | Compact type differential |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539343.4A CN105909757A (en) | 2016-07-08 | 2016-07-08 | Compact type differential |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105909757A true CN105909757A (en) | 2016-08-31 |
Family
ID=56754632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610539343.4A Pending CN105909757A (en) | 2016-07-08 | 2016-07-08 | Compact type differential |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105909757A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240448A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Differential mechanism and vehicle |
| CN110067843A (en) * | 2018-01-19 | 2019-07-30 | 本田技研工业株式会社 | Differential gear |
| CN115709637A (en) * | 2021-08-23 | 2023-02-24 | 南京泉峰科技有限公司 | Self-walking tool and transmission device thereof |
| WO2024094551A1 (en) * | 2022-10-31 | 2024-05-10 | Mercedes-Benz Group AG | Gearbox device for a motor vehicle |
| WO2024094546A1 (en) * | 2022-10-31 | 2024-05-10 | Mercedes-Benz Group AG | Spur gear differential for a motor vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010050604A1 (en) * | 2010-11-05 | 2012-05-10 | Schaeffler Technologies Gmbh & Co. Kg | Planetary gear for vehicle, has multiple planetary wheels and planetary wheel bolts, where planetary wheel carrier has two carrier sheets |
| CN202579892U (en) * | 2011-12-26 | 2012-12-05 | 天津天海同步科技股份有限公司 | Compact limited slip differential |
| CN103511583A (en) * | 2012-06-25 | 2014-01-15 | 谢夫勒科技股份两合公司 | Cylindrical gear type differential mechanism |
| WO2014019744A1 (en) * | 2012-07-31 | 2014-02-06 | Schaeffler Technologies AG & Co. KG | Spur gear differential |
| CN104110487A (en) * | 2013-04-16 | 2014-10-22 | 舍弗勒技术有限两合公司 | Planetary Gear Arrangement Having At Least Two Axially Juxtaposed Planetary Gear Units |
| WO2016010581A1 (en) * | 2014-07-18 | 2016-01-21 | Eaton Corporation | Differential assembly with helical pinion gear having protuberance |
| CN205877112U (en) * | 2016-07-08 | 2017-01-11 | 天津天海同步科技有限公司 | Compact differential mechanism |
-
2016
- 2016-07-08 CN CN201610539343.4A patent/CN105909757A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010050604A1 (en) * | 2010-11-05 | 2012-05-10 | Schaeffler Technologies Gmbh & Co. Kg | Planetary gear for vehicle, has multiple planetary wheels and planetary wheel bolts, where planetary wheel carrier has two carrier sheets |
| CN202579892U (en) * | 2011-12-26 | 2012-12-05 | 天津天海同步科技股份有限公司 | Compact limited slip differential |
| CN103511583A (en) * | 2012-06-25 | 2014-01-15 | 谢夫勒科技股份两合公司 | Cylindrical gear type differential mechanism |
| WO2014019744A1 (en) * | 2012-07-31 | 2014-02-06 | Schaeffler Technologies AG & Co. KG | Spur gear differential |
| CN104110487A (en) * | 2013-04-16 | 2014-10-22 | 舍弗勒技术有限两合公司 | Planetary Gear Arrangement Having At Least Two Axially Juxtaposed Planetary Gear Units |
| WO2016010581A1 (en) * | 2014-07-18 | 2016-01-21 | Eaton Corporation | Differential assembly with helical pinion gear having protuberance |
| CN205877112U (en) * | 2016-07-08 | 2017-01-11 | 天津天海同步科技有限公司 | Compact differential mechanism |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110067843A (en) * | 2018-01-19 | 2019-07-30 | 本田技研工业株式会社 | Differential gear |
| CN110067843B (en) * | 2018-01-19 | 2021-08-10 | 本田技研工业株式会社 | Differential gear |
| CN115709637A (en) * | 2021-08-23 | 2023-02-24 | 南京泉峰科技有限公司 | Self-walking tool and transmission device thereof |
| WO2024094551A1 (en) * | 2022-10-31 | 2024-05-10 | Mercedes-Benz Group AG | Gearbox device for a motor vehicle |
| WO2024094546A1 (en) * | 2022-10-31 | 2024-05-10 | Mercedes-Benz Group AG | Spur gear differential for a motor vehicle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160831 |
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| RJ01 | Rejection of invention patent application after publication |