KR20150045894A - Driving device for the wheels of a vehicle - Google Patents

Driving device for the wheels of a vehicle Download PDF

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Publication number
KR20150045894A
KR20150045894A KR20140139872A KR20140139872A KR20150045894A KR 20150045894 A KR20150045894 A KR 20150045894A KR 20140139872 A KR20140139872 A KR 20140139872A KR 20140139872 A KR20140139872 A KR 20140139872A KR 20150045894 A KR20150045894 A KR 20150045894A
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KR
South Korea
Prior art keywords
housing
differential
driven
supported
friction bearing
Prior art date
Application number
KR20140139872A
Other languages
Korean (ko)
Inventor
호어스트 지글
페터 하젤베르거
클라우스 알레쉬
파울 렌츠
루돌프 노이뮐러
알렉산더 엔덜
다니엘 두덱
Original Assignee
젯트에프 프리드리히스하펜 아게
Priority date (The priority date 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 date listed.)
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Application filed by 젯트에프 프리드리히스하펜 아게 filed Critical 젯트에프 프리드리히스하펜 아게
Publication of KR20150045894A publication Critical patent/KR20150045894A/en

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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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/037—Gearboxes for accommodating differential gearings
    • 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
    • F16H48/40—Constructional details characterised by features of the rotating cases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
    • 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
    • F16H48/40—Constructional details characterised by features of the rotating cases
    • F16H2048/405—Constructional details characterised by features of the rotating cases characterised by features of the bearing of the rotating case
    • 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

Abstract

The present invention relates to a drive device for vehicle wheels comprising a stationary housing (3), in which a drive shaft (1) which can be rotatably driven into the housing inner chamber (2) of the stationary housing And an end of a drive shaft projecting inside the housing inner chamber 2 supports the drive gear 4. The drive device is also supported rotatably in the housing 3 by the drive gear 4 (6) having a ring gear (5) with a cup-shaped differential housing (9) that can be driven to rotate and is rotatably driven by a plurality of differential gears 15 can be rotatably driven, these driven gears 16, 19 can be rotatably driven again by these differential gears, and these driven gears can be driven in the axial direction And is driven and connected to the driven shafts 17 and 18 which are discharged from the housing 9 and protruded into the portal housing 11, respectively. At this time, the differential housing 9 is rotatably supported on the portal housing 11 via the first tapered friction bearing as the axial end on the side of the cup-shaped opening thereof, and the second taper And is rotatably supported by the housing 3 through the friction bearing. The outer ring 22 of the first tapered friction bearing is disposed in the inlet opening of the differential housing inner chamber and the inner wheel 26 of the first tapered friction bearing is disposed on the annular member 24 of the portal housing 11 .

Figure P1020140139872

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a drive device for vehicle wheels, the drive device comprising a stationary housing, a drive shaft rotatably driveable into a housing inner chamber of the stationary housing is inserted, the drive shaft projecting into the housing inner chamber Wherein the end of the driven drive shaft supports the drive gear and the drive apparatus further comprises a differential unit having a ring gear having a cup- shaped differential housing rotatably supported in the housing and rotatably driven by the drive gear, Wherein a plurality of differential gears of the differential unit can be rotatably driven by the ring gear and the driven gears can be rotatably driven again by these differential gears, Respectively, from the differential housing, And the differential housing is rotatably supported on the portal housing through a first taper antifriction bearing as an axial end of its cup-shaped opening side, And is rotatably supported by the housing through the second tapered friction bearing as its bottom side axial end.

Known drive devices of this type are large in size and complex in structure.

Therefore, an object of the present invention is to provide a driving apparatus of the type mentioned in the introduction section, which is simple in structure and small in size.

The problem is solved according to the invention in that the outer ring of the first tapered friction bearing is disposed in the inlet opening of the differential housing inner chamber and the inner ring of the first tapered friction bearing is disposed on the annular member of the portal housing Is solved.

Since the inner ring of the first tapered friction bearing is no longer disposed in a differential cover that supports the portal side differential side gear with the thrust washer but is disposed in the portal housing, the entire inner surface of the differential housing between the two tapered friction bearings The length can be formed much shorter. As a result, the weight and cost are reduced. At the same time, efficiency and performance are increased.

The first tapered friction bearings, which can be formed with a relatively larger diameter, can be designed for relatively larger loads.

The differential cover is no longer necessary.

In this case, in a simple manner, for the axial support, the inner ring of the friction bearing in the first taper is axially supported on the portal housing shoulder on the opposite side of the differential unit, and the outer ring of the friction bearing in the first taper is supported on the differential unit And is axially supported on the first differential housing shoulder at the facing side.

The inner ring of the second tapered friction bearing can be disposed on an annular lug of the differential housing, and the outer ring can be disposed in the recess of the housing.

In this case, for the support of the axial force acting on the differential housing, the outer ring of the second tapered friction bearing can be axially supported on the housing shoulder at the opposite side of the differential unit, and the inner ring of the second rolling bearing And can be axially supported on the second differential housing shoulder on the side facing the differential unit.

Preferably, the first tapered friction bearing is a first tapered roller bearing, and / or the second tapered friction bearing is a second tapered roller bearing, whereby a high bearing force can be absorbed, The bearings and the friction bearings in the second taper can be arranged in a tandem type manner.

The first driven gear on the cup-shaped opening side can be arranged so as to be non-rotatable and axially displaceable on the first driven shaft in such a manner as to simplify the mounting space saving, and on the opposite side of the differential unit to the differential housing And can be supported by a fixedly disposed annular support member.

In this case, if the annular support member is inserted into the cup-shaped opening of the differential housing and is brought into close contact with the inner wall of the cup-shaped opening of the differential housing by press fitting, a very short total length is provided.

In this case, in a simple configuration, the annular support member can be axially supported on the opposite side of the differential unit to a snap ring inserted into a radially circular annular groove formed in the inner wall portion of the cup-shaped opening of the differential housing .

The first driven gear may be supported on the annular support member through a coaxial thrust washer.

The second driven gear facing the opposite side of the cup shaped opening is non-rotatable and axially displaceable on the second driven shaft and axially supported on the third differential housing shoulder on the opposite side of the differential unit , Wherein the second driven gear can also be axially supported on the third differential housing shoulder through a coaxial thrust washer.

For simple assembly, the differential gears are each disposed on studs coaxial with their rotational axes, the studs being inserted into corresponding through bores extending transversely to the longitudinal axis of the driven shafts in the wall of the differential housing do.

The ring gear may include a coaxial bore on which the ring gear is mounted on the cylindrical region of the outer wall of the differential housing and is permanently connected to the differential housing.

If the inboard bores of the differential housing are penetrated and the ring gear comprises a coaxial bore, the outer inlets of the through bores in the wall of the differential housing can be completely or partially overlapped by the area of the coaxial bore of the ring gear, The studs of the gears can be fixed within their bores.

To transmit the rotational drive of the first driven shaft to the wheel drive, the end of the first driven shaft projecting into the portal housing may support a driven wheel engaged with the at least one driven gear.

In this case, if the diameter of the driven wheel is smaller than the through-opening of the portal housing for passing the first driven shaft to the differential unit, the first driven shaft and the driven wheel can be integrally formed have.

One embodiment of the invention is shown in the drawings and described in more detail below.

1 is a plan view of a driving apparatus for a vehicle wheel.
Fig. 2 is an enlarged view showing a part of Fig.

In the drawings, a drive shaft 1, which can be rotatably driven by an engine of the vehicle, is shown almost vertically as it is inserted into the housing inner chamber 2 of the housing 3.

The drive shaft 1 supports a drive gear 4 formed as a bevel gear at its end protruding into the housing 3 and this drive gear is connected to the ring gear of the differential unit 6 5).

The ring gear 5 is provided with a coaxial bore 7 which is raised on the cylindrical outer wall 8 of the differential housing 9 to be permanently connected to the differential housing.

The differential housing 9 extends through the first tapered roller bearing 10 to the portal housing 11 and through the second tapered roller bearing 12 to the housing 3 at a right angle to the drive shaft 1 And is rotatably supported about a rotating shaft 13 as a center.

The housing 3 forms an axial end region of the axial tubular axle housing 14 with respect to the rotary shaft 13.

In the differential housing 9, two differential gears 15 formed as bevel gears are rotatably supported on the studs 20 so as to face each other. The two differential gears are formed as bevel gears, 17 and 18, respectively. As shown in Fig. The first driven shaft 17 extends into the portal housing 11 and the second driven shaft 18 extends through the axle housing 14 to extend Thereby directly driving the vehicle wheel not shown.

The opposite ends of the studs 20 coaxially disposed project from each other into the through bores 21 in the wall portion of the differential housing 9 and the bores of the bores 21 are connected to the cylindrical outer wall portion 21 outside the bores 21, (8). The ring gear 5 partially overlaps the radially outer ends 43 of the studs 20 so that the studs 20 are fixed so as not to deviate radially outward from the bores 21 . The radially outer ends 43 of the studs 20 have flat faces on their cylindrical outer surfaces and are provided with axial grooves in the wall portion of the coaxial bore 7 of the ring gear 5, (44). The spacing of the mutually parallel planes corresponds to the width of the grooves 44 so that the studs 20 are fixed unrotatably about their longitudinal axis.

The outer ring 22 of the first tapered roller bearing 10 is disposed on the inner wall portion of the portal housing side inlet of the differential housing 9 and on the side facing the opposite side of the portal housing 11, The inner ring 26 of the first tapered roller bearing 10 is disposed on the coaxial annular member 24 of the portal housing 11 while the inner ring 26 of the first tapered roller bearing 10 is supported on the housing housing 11 And is axially supported on the portal housing shoulder portion 25 on the facing side.

The outer ring 27 of the second tapered roller bearing 12 is disposed in the coaxial recess 31 of the housing 3 and on the opposite side of the differential unit 6 is connected via a second spacer disk 46 to a housing shoulder 29 In the axial direction. The inner ring 30 of the second tapered roller bearing 12 is disposed on the coaxial annular lug 28 of the differential housing 9 and on the side facing the differential unit 6 is disposed on the second differential housing shoulder 42 And is supported in the axial direction.

The spacer disks 45 and 46 are used for compensation of axial manufacturing tolerances.

The first driven gear 16 is disposed on the first driven shaft 17 so as to be non-rotatable and axially displaceable. The first driven gear 16 is axially supported on the annular support member 32 on the side facing the portal housing 11 and the radially outer surface of the annular support member is press- Like opening portion 33 of the differential housing 9 by a predetermined distance.

The annular support member 32 is supported on the snap ring 34 inserted into the radially circular annular groove 35 formed in the inner wall portion of the cup-shaped opening 33 of the differential housing 9 again on the portal housing side And is supported in the axial direction.

Between the first driven gear 16 and the support member 32, there is disposed a coaxial annular thrust washer 36 having a thickness selected to correspond to the respective tolerance relationships.

The second driven gear 19 is disposed on the second driven shaft 18 so as to be non-rotatable and displaceable in the axial direction. On the opposite side of the portal housing 11, a second thrust washer 38 3 differential housing shoulder 37 in the axial direction.

The annular member 24 of the portal housing 11 has a coaxial through opening 39 and a first driven shaft 17 passes through the coaxial through opening and protrudes into the portal housing 11. The driven shaft 17 has a driven wheel 40 integral with the opposite end of the differential unit 6, and the diameter of the driven wheel is smaller than the diameter of the through-hole 39.

The driven wheel 40 is engaged with two driven gears 41 rotatably supported in the portal housing 11. [

1 drive shaft
2 housing inner chamber
3 Housing
4 drive gear
5 ring gear
6 Differential Unit
7 coaxial bore
8 cylindrical outer wall portion
9 Differential housing
10 1st tapered roller bearing
11 Portal housing
12 2nd tapered roller bearing
13 Rotary shaft
14 Axle housing
15 Differential gear
16 First driven gear
17 First driven shaft
18 2nd driven shaft
19 2nd driven gear
20 studs
21 bore
22 first outer ring
23 Differential Housing Shoulder
24 annular member
25 Portal housing shoulder
26 1st inner ring
27 2nd outer ring
28 annular rug
29 Housing Shoulder
30 second inner ring
31 recess
32 support member
33 cup shaped opening
34 Snap ring
35 Annular groove
36 Thrust Washers
37 3rd Differential Housing Shoulder
38 2nd thrust washer
39 through opening
40 driven wheel
41 driven gear
42 2nd differential shoulder
43 Outer end
44 Axial groove
45 spacer disk
46 Second spacer disk

Claims (16)

A driving apparatus for a vehicle wheel, comprising a fixed housing (3) and a differential unit (6)
A drive shaft 1 rotatably driveable into the housing inner chamber 2 of the stationary housing is inserted and an end of a drive shaft projecting inside the housing inner chamber 2 supports the drive gear 4 ,
The differential unit includes a ring gear (5) rotatably supported in a housing (3) and rotatably driven by the drive gear (4) and having a cup shaped differential housing (9) The plurality of differential gears 15 of the differential unit 6 can be rotatably driven by the ring gear and the driven gears 16 and 19 can be rotatably driven again by these differential gears, The driven gears are respectively driven and connected to driven shafts 17 and 18 which are respectively discharged from the differential housing 9 in the axial direction for driving the vehicle wheels and protruded into the portal housing 11. The differential housings 9 Is rotatably supported on the portal housing 11 through the first tapered friction bearing as the axial end on the side of the cup-shaped opening thereof, and is rotatably supported by the second taper abrasion In the housing 3, the vehicle wheel drive device which is rotatably supported on through a bearing,
The outer ring 22 of the first tapered friction bearing is disposed in the inlet opening of the differential housing inner chamber and the inner wheel 26 of the first tapered friction bearing is disposed on the annular member 24 of the portal housing 11 And the driving force of the driving wheel is transmitted to the driving wheel. 2. A bearing according to claim 1, wherein the inner ring (26) of the first tapered friction bearing is axially supported on the portal housing shoulder (25) on the opposite side of the differential unit (6) ) Is axially supported on the first differential housing shoulder (23) on the side facing the differential unit (6). 3. A bearing according to claim 1 or 2, characterized in that the inner ring (30) of the friction bearing in the second taper is arranged on the annular lug (28) of the differential housing (9) (31). ≪ / RTI > 4. The internal combustion engine according to claim 3, wherein the outer ring (27) of the second tapered friction bearing is axially supported on the housing shoulder (29) on the opposite side of the differential unit (6) Is supported axially on the second differential housing shoulder (42) on the side facing the unit (6). 5. A bearing according to any one of claims 1 to 4, wherein the first tapered friction bearing is a first tapered roller bearing (10) and / or the second tapered friction bearing is a second tapered roller bearing (12) And the driving force is transmitted to the driving wheels. 6. The driving device for a vehicle wheel according to any one of claims 1 to 5, characterized in that the first tapered friction bearing and the second tapered friction bearing are disposed in a mutually columnar manner. 7. A device according to any one of claims 1 to 6, wherein the first driven gear (16) on the cup-shaped opening side is non-rotatable and axially displaceable on the first driven shaft (17) Is supported on an annular support member (32) fixedly disposed on the differential housing (9) on the side opposite the unit (6). 8. A method as claimed in claim 7, characterized in that the annular support member (32) is inserted into the cup-shaped opening (33) of the differential housing (9) and is pressed against the inner wall of the cup-shaped opening (33) of the differential housing And the driving force of the driving wheel is transmitted to the driving wheel. 9. The apparatus according to claim 8, wherein the annular support member (32) comprises a radially circular annular groove (35) formed in the inner wall of the cup-shaped opening (33) of the differential housing (9) Is supported in the axial direction to a snap ring (34) inserted into the ring (34). 10. The drive device for a vehicle wheel according to any one of claims 7 to 9, characterized in that the first driven gear (16) is supported on the annular support member (32) through a coaxial thrust washer (36). 11. A device according to any one of the preceding claims, characterized in that the second driven gear (19), which is opposite to the cup-shaped opening (33), is arranged on the driven shaft (18) , And the side of the second driven gear opposite to the differential unit (6) is axially supported on the third differential housing shoulder (37). 12. A device as claimed in any one of the preceding claims, characterized in that the differential gears (15) are arranged respectively on studs (20) which have coaxial axes with respect to their axis of rotation, Is inserted into corresponding through bores (21) extending transversely with respect to the longitudinal axis of the driven shafts (17, 18) in the wall portion of the vehicle. 13. A device according to any one of the claims 1 to 12, characterized in that the ring gear (5) comprises a coaxial bore (7) by means of which the ring gear is connected to the outer wall part (8) of the differential housing And is mounted on the cylindrical region to be permanently connected to the differential housing. 14. A method according to claim 12 or 13, characterized in that the outer peripheries of the through bores (21) in the walls of the differential housing (9) are completely or partially overlapped by the area of the coaxial bore (7) Wherein the driving force is transmitted to the vehicle wheel. 15. A method according to any one of claims 1 to 14, wherein an end of a first driven shaft (17) projecting inwardly of the portal housing (11) comprises a driven wheel (40) engaging one or more driven gears Wherein the supporting member is supported by the supporting member. 16. The driving device for a vehicle wheel according to claim 15, wherein the diameter of the driven wheel is smaller than the through-opening of the portal housing for passing the first driven shaft to the differential unit.
KR20140139872A 2013-10-21 2014-10-16 Driving device for the wheels of a vehicle KR20150045894A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013221253.4 2013-10-21
DE201310221253 DE102013221253A1 (en) 2013-10-21 2013-10-21 Drive device for the wheels of a vehicle

Publications (1)

Publication Number Publication Date
KR20150045894A true KR20150045894A (en) 2015-04-29

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KR20140139872A KR20150045894A (en) 2013-10-21 2014-10-16 Driving device for the wheels of a vehicle

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CN (1) CN104565317A (en)
DE (1) DE102013221253A1 (en)

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Publication number Priority date Publication date Assignee Title
US20190359052A1 (en) * 2016-11-25 2019-11-28 Volvo Truck Corporation An assembly for a differential unit of a vehicle
CN106585656A (en) * 2016-12-13 2017-04-26 中车长春轨道客车股份有限公司 Wheel pair axle box device enabling rotating speed of left wheel and that of right wheel of low floor light rail bogie to be synchronous

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DE3027806C2 (en) * 1980-07-23 1984-10-31 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Drive axle for buses
JPS57134327A (en) * 1981-02-09 1982-08-19 Nissan Motor Co Ltd Supporting construction of differential gear case
DE19604730A1 (en) * 1996-02-09 1997-08-14 Zahnradfabrik Friedrichshafen Portal axis
JP3826559B2 (en) * 1998-03-31 2006-09-27 スズキ株式会社 Breather device for differential device
US6745471B2 (en) * 2001-08-10 2004-06-08 Caterpillar Inc Bevel gear bearing support arrangement manufacturing method
JP2003106405A (en) * 2001-09-28 2003-04-09 Jatco Ltd Automatic transmission
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DE10250481A1 (en) * 2002-10-30 2004-05-19 Zf Friedrichshafen Ag Straddle drive for vehicle axle unit has wheel arrangement including at least one thrust collar to take axial forces on teeth
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CN104565317A (en) 2015-04-29

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