EP3426951A1 - System for lubricating bearings and differential housing - Google Patents
System for lubricating bearings and differential housingInfo
- Publication number
- EP3426951A1 EP3426951A1 EP17708562.8A EP17708562A EP3426951A1 EP 3426951 A1 EP3426951 A1 EP 3426951A1 EP 17708562 A EP17708562 A EP 17708562A EP 3426951 A1 EP3426951 A1 EP 3426951A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- bearing
- oil
- differential
- channel
- 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.)
- Withdrawn
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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
-
- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
-
- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
-
- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
- F16H57/0483—Axle or inter-axle differentials
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M1/00—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds
- F16M1/02—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds for reciprocating engines or similar machines
- F16M1/026—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds for reciprocating engines or similar machines for housing movable engine or machine parts other than crankshafts, e.g. valve-gear housings
Definitions
- the present invention relates to transmission differentials, particularly for road vehicles, and particularly the problem of the lubrication of differential bearings, and dynamic rings that seal the differential housing or mechanisms, with the transmission shafts transmitting the transmission. movement of the differential to the wheels of the vehicle.
- this invention relates to a bearing lubrication system of a differential output rotating in a housing, guiding the scraped oil around the differential housing on a conical portion of the housing in the direction of the bearing.
- the bearings that rotate the differential line of a gearbox need to be lubricated when the vehicle is in motion. It is the same for dynamic lip rings that seal with the driveshafts.
- No. 6,186,277 discloses a differential housing with oil baffles integrated into its inner wall. These baffles are used to direct the oil projected inside the housing to the rolling bearings of the drive shafts at the two outputs of the housing.
- baffles are used to direct the oil projected inside the housing to the rolling bearings of the drive shafts at the two outputs of the housing.
- the space available between the crankcase and the differential case is very limited, to the point that they are almost contiguous. Under these conditions, the addition of baffles inside the housing is virtually impossible, or at least extremely difficult to achieve, either by the integration of baffles in the same wall of the housing, or the addition of patches , internally fixed on the housing wall.
- the invention aims to effectively guide the scraped oil on the conical inner wall of the housing to the areas to be lubricated. It proposes for this purpose to route the oil in the direction of rolling, by a raw channel foundry in the inner wall of the housing, opening halfway up the bearing.
- the oil is fed into the bottom of the housing by the lower wall of the channel.
- the proposed lubrication system finds a non-limiting application on a gear housing, or on a clutch housing and differential, gearboxes.
- FIGS. 1A and 1B illustrate a first crankcase arrangement for lubricating the transmission bearings
- FIGS. 2A and 2B illustrate the crankcase arrangement preferred by the invention
- Figures 3A and 3B show a variant of the latter.
- FIG. 1A which is a view, on the box side, of a clutch and differential housing (1a, 1b), the passage opening 2 of the right drive shaft, of a front axle can be seen of vehicle.
- An arrow f indicates the direction of rotation of the differential case (not shown) in forward direction.
- On the inner wall of the differential housing lb there is a raw rib 3, in the upper position, for scraping oil entrained by the differential housing, and a groove, or channel 4, bringing the oil scraped by the rib 3, towards the opening 2.
- a boss 5 corresponding to an advance of the clutch mechanism (not shown) behind the housing 1b.
- the housing enclosing the mechanism of the gearbox, or mechanism housing presents the differential output to the left front wheel, with the left differential bearing.
- the clutch and differential housing then carries the right bearing.
- the method consists of scraping the oil rotated by the differential case and guiding it behind the bearing.
- the channel 4 opens in the upper part of the bearing, to maximize by gravity, the flow of oil entering behind the bearing.
- the interest of this provision is economic, since it is limited to a development directly from the crankcase in the foundry. Its limitations are due to the particular, essentially conical, shape of the housing, in the area of the housings, which houses the differential case. Indeed, a significant portion of the oil falls on the differential case by gravity, before reaching the bearing at the bottom of the housing.
- FIG. 2A and its enlargement of FIG. 2B show a mechanism casing 7, the passage opening 2 of the left transmission shaft, and the bearing 6.
- an arrow f has been indicated, the direction of rotation of the drive shaft in forward direction.
- a raw casting channel 4 is formed in the inner wall of the housing, to route the oil in the direction of the bearing.
- the orientation of the raw casting channel 4 in the inner wall of the casing is modified. It opens at half height of the bearing 6, not at the top.
- the oil can be scraped on the differential housing in the same manner as before, for example by a rib (not reproduced in these diagrams). Part of the oil thus captured is conveyed to the left bearing through the lower wall of the channel 4a, as shown in Figure 2B.
- the shape of the channel can be optimized, for example by adding a complementary oil guiding element 8, as in the nonlimiting example of FIG. 3A and FIG. 3B. , which is an enlargement of it.
- the guide element 8 advances from the bottom of the channel, towards the interior of the casing 7, in order to better channel the oil.
- This lubrication system is integrated in particular in a gear housing, or in a clutch housing and differential gearbox.
- a gearbox can thus integrate a lubrication system according to the invention, in each of its housings.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1652017A FR3048747B1 (en) | 2016-03-10 | 2016-03-10 | BEARING LUBRICATION SYSTEM AND DIFFERENTIAL HOUSING |
PCT/FR2017/050223 WO2017153646A1 (en) | 2016-03-10 | 2017-02-01 | System for lubricating bearings and differential housing |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3426951A1 true EP3426951A1 (en) | 2019-01-16 |
Family
ID=56008742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17708562.8A Withdrawn EP3426951A1 (en) | 2016-03-10 | 2017-02-01 | System for lubricating bearings and differential housing |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3426951A1 (en) |
KR (1) | KR102255932B1 (en) |
CN (1) | CN108884929A (en) |
FR (1) | FR3048747B1 (en) |
RU (1) | RU2700947C1 (en) |
WO (1) | WO2017153646A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3072747B1 (en) * | 2017-10-24 | 2021-02-19 | Renault Sas | AUTOMATIC GEARBOX MOUNTING PLOT ON A SUPPORT PLATE |
CN109944928A (en) * | 2019-04-24 | 2019-06-28 | 北京长城华冠汽车科技股份有限公司 | The bearing-lubricating mechanism and speed changer of speed changer |
CN111197649B (en) * | 2020-03-12 | 2021-12-31 | 奇瑞新能源汽车股份有限公司 | Speed reducer shell structure and electric automobile |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT375752B (en) * | 1979-06-29 | 1984-09-10 | Steyr Daimler Puch Ag | LUBRICATION DEVICE FOR THE DIFFERENTIAL GEARBOX OF MOTOR VEHICLES |
JP2961884B2 (en) * | 1990-11-30 | 1999-10-12 | スズキ株式会社 | Lubricating device for differential device |
JP4573410B2 (en) * | 2000-08-10 | 2010-11-04 | 本田技研工業株式会社 | Transmission oil gutter plate |
US7374507B2 (en) * | 2006-02-13 | 2008-05-20 | Ford Motor Company | Lubrication system for differential mechanism |
US8409044B2 (en) * | 2008-10-23 | 2013-04-02 | American Axle & Manufacturing, Inc. | Differential lubrication feed system in a drive axle assembly |
DE102010005749A1 (en) * | 2010-01-27 | 2011-07-28 | GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Mich. | Machine with lubricant circuit |
US8844396B2 (en) * | 2011-01-04 | 2014-09-30 | Chrysler Group Llc | Axle assembly |
FR2998024B1 (en) * | 2012-11-13 | 2014-10-24 | Renault Sa | "DIFFERENTIAL OF A MOTOR VEHICLE HAVING A CASE PROVIDED WITH OIL RECOVERY MEANS" |
US8960362B2 (en) * | 2013-06-28 | 2015-02-24 | Caterpillar Inc. | Lubrication arrangement for a drive axle of a haul vehicle |
US20150029204A1 (en) * | 2013-07-26 | 2015-01-29 | Shao-Yang Wang | Dynamic localized contrast enhancement method for image and computer readable medium of the same |
US9546727B2 (en) * | 2014-01-31 | 2017-01-17 | Dana Automotive Systems Group, Llc | Carrier oil feed channel lubricating system |
CN106015539B (en) * | 2016-06-29 | 2019-06-25 | 方盛车桥(柳州)有限公司 | Band gets rid of the integral type main gearbox assembly of oily blade |
-
2016
- 2016-03-10 FR FR1652017A patent/FR3048747B1/en active Active
-
2017
- 2017-02-01 EP EP17708562.8A patent/EP3426951A1/en not_active Withdrawn
- 2017-02-01 KR KR1020187028043A patent/KR102255932B1/en active IP Right Grant
- 2017-02-01 WO PCT/FR2017/050223 patent/WO2017153646A1/en active Application Filing
- 2017-02-01 RU RU2018135594A patent/RU2700947C1/en active
- 2017-02-01 CN CN201780016000.2A patent/CN108884929A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
RU2700947C1 (en) | 2019-09-24 |
CN108884929A (en) | 2018-11-23 |
KR20180113619A (en) | 2018-10-16 |
FR3048747A1 (en) | 2017-09-15 |
WO2017153646A1 (en) | 2017-09-14 |
KR102255932B1 (en) | 2021-05-25 |
FR3048747B1 (en) | 2019-05-10 |
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Owner name: RENAULT S.A.S |
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