GB2260170A - Differential gear - Google Patents

Differential gear Download PDF

Info

Publication number
GB2260170A
GB2260170A GB9120782A GB9120782A GB2260170A GB 2260170 A GB2260170 A GB 2260170A GB 9120782 A GB9120782 A GB 9120782A GB 9120782 A GB9120782 A GB 9120782A GB 2260170 A GB2260170 A GB 2260170A
Authority
GB
United Kingdom
Prior art keywords
housing
differential gear
drive shafts
halves
gear according
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.)
Granted
Application number
GB9120782A
Other versions
GB9120782D0 (en
GB2260170B (en
Inventor
David Nadin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9120782A priority Critical patent/GB2260170B/en
Publication of GB9120782D0 publication Critical patent/GB9120782D0/en
Publication of GB2260170A publication Critical patent/GB2260170A/en
Application granted granted Critical
Publication of GB2260170B publication Critical patent/GB2260170B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

A differential gear comprising a housing, bearings at opposite sides thereof for drive shafts 15, 16 having bevel wheel gears 19, 20 secured to their ends and located within the housing, a pair of freely rotatable bevel pinion gears 21, 22 located within the housing and each meshing with the two bevel wheel gears on the ends of said drive shafts. The means for rotatably driving the housing about the axes of the drive shafts may comprise a sprocket 24 or a pulley. The housing may be in two cup-like halves 11, 12. A central carrier member carries a pinion shaft 23, on which pinions 21, 22 are rotatably mounted, and provides bearings for the support of the ends of drive shafts 15, 16. <IMAGE>

Description

DIFFERENTIAL GEAR This invention concerns a differential gear, of the kind connected between a drive and a pair of half shafts serving wheels on opposite sides of a vehicle.
The conventional differential is quite complex and comprises many parts.
It is an object of the present invention te provide a simple differential gear part5cularly, though by 1: means exclusively, adapted for use on electricaliy operated battery powered vehicles such as platform trucks and trailers for example.
According to the present invention there is provided a differential gear comprising a housing, bearings at opposite sides thereof for drive shafts having bevel wheel gears secured to their ends and located within the housing, a pair of freely rotatable bevel pinion gears located within the housing and each meshing with the two bevel wheel gears on the ends of said drive shafts and means for rotatably driving the housing about the axes of said drive shafts.
The means for rotatably driving the housing may comprise a sprocket wheel or pulley secured thereto.
The housing may be formed from two cup-like halves.
A carrier-member may extend diametrically of the two halves at their junction.
The carrier-member may be located by arcuate pads at its opposed ends which provide a close fit within the two halves.
The carrier-member may support a pinion shaft which extends diametrically of the two halves and which carries the freely rotatable bevel pinion gears.
The ends of the pinion shaft may locate in bores formed by notches in each of the two halves at their junction.
The carrier member may provide bearings for the ends of the two drive shafts.
The drive shafts may terminate in flanges on the outside of the housing for connection with half shafts.
The invention will be further apparent from the following description, with reference to the figures of the accompanying drawings, which show, by way of example only one form of differential gear embodying same.
Of the drawings : Figure 1 shows a side view of the gear; Figure 2 shows a cross-section through the gear on the line II-II of Figure 1; Figure 3 shows a cross-section through the gear on the line III-III of Figure 2.
Referring now to the drawings7 it will be seen that the differential gear comprises a housing 10 formed from two cup-shaped halves 11 and 12 There are bearings 13 and 14 at opposite ends of the housing 10 for drive shafts 15 and 16 having flanges 17 and 18 on their free ends outside the housing 10 for connection with half-shafts.
Secured to the drive shafts 15 and 16 and located within the housing 10 are bevel wheel gears 19 and 20 respectively.
Further bevel pinion gears 21 and 22 freely rotatable on pinion shaft 23 each mesh with both of the bevel wheel gears 19 and 20.
A sprocket wheel 24 is secured to the outside of the housing 10 enabling the housing to be rotatably driven about the axes of the drive shafts 15 and 16 by means of a chain drive (not shown).
When the housing is so driven the drive is transmitted to the drive shafts 15 and 16 by the intermeshing gears 21, 22 and 19, 20 generally without rotation of those gears relative to one another.
However if the torque applied to the drive shafts 15 and 16 differs a differential drive is accomodated by rotation of the gears 21, 22 and 19, 20 relative to one another.
The pinion shaft 23 is supported in a bore through a carrier-member 30 which extends diammetr caily of the housing 10 at the junction between the two halves 11 and 12.
The carrier-member 30 is located within the housing 10 by arcuate pads 31 and 32 on its opposed ends which provide a close fit within the two halves 11 and 12 of the housing.
Portions of reduced diameter on the ends of the pinion shaft 23 are located in bores 33 and 34 in the wall of the housing and formed by half circular notches in the edge of the walls of the halves 11 and 12.
The carrier-member 30 also provides bearings 35 and 36 for the ends of the drive shafts 15 and 16 within the housing 10.
It will be appreciated that it is not intended to limit the invention to the above example only, many variations, such as might readily occur to one skilled in the art, being possible, without departing from the scope thereof as defined by the appended claims.

Claims (5)

1. A differential gear comprising a housing, bearings at opposite sides thereof for drive shafts having bevel wheel gears secured to their ends and located within the housing, a pair of freely rotatable bevel pinion gears located within the housing and each meshing with the two bevel wheel gears on the ends of said drive shafts and means for rotatably driving the housing about the axes of said drive shafts.
2. A differential gear according to claim 1, wherein the means for rotatably driving the housing comprises a sprocket wheel or pulLey secured thereto.
3. A differential gear according to claim 1 or claim 2, wherein the housing is formed from two cup-like halves.
4. A differential gear according to claim 3, wherein a carrier-member extends diametrically of the two halves at their junction.
5. A differential gear according to any preceding claim, wherein the drive shafts terminate in flanges on the outside of the housing for connection with half shafts.
5. A differential gear according to claim 3, wherein the carrier-member is located by arcuate pads at its opposed ends which provide a close fit within the two halves.
6. A differential gear according to claim 3, wherein the carrier-member supports a pinion shaft which extends diametrically of the two halves and which carries the freely rotatable bevel pinion gears.
7. A differential gear according to claim 3, wherein the ends of the pinion shaft locate in bores formed by notches in each of the two halves at their junction.
8. A differential gear according to any one of claims 4-7, wherein the carrier member provides bearings for the ends of the two drive shafts.
9. A differential gear according to any preceding claim, wherein the drive shafts terminate in flanges on the outside of the housing for connection with half shafts.
Amendments to the claims have been filed as follows 1. A differential gear comprising a housing, bearings at opposite sides thereof for drive shafts having bevel wheel gears secured to their ends and located within the housing, a pair of freely rotatable bevel pinion gears located within the housing and each meshing with the two bevel wheel gears on the ends of said drive shafts and means for rotatably driving the housing about the axes of said drive shafts, said housing being formed from two cup-like halves, a carrier-member extending diametrically of the two halves at their junction and supporting a pinion shaft which extends diametrically of the two halves and which carries the freely rotatable bevel pinion gears, the carrier-member being located by arcuate pads at its opposed ends which provide a close fit within the two halves.
2. A differential gear according to claim 1, wherein the ends of the pinion shaft locate in bores formed by notches in each of the two halves at their junction.
3. A differential gear according to either claim 1 or claim 2, wherein the carrier member provides bearings for the ends of the two drive shafts.
4. A differential gear according to any preceding claim, wherein the means for rotatably driving the housing comprises a sprocket wheel or pulley secured thereto.
GB9120782A 1991-10-01 1991-10-01 Differential gear Expired - Fee Related GB2260170B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9120782A GB2260170B (en) 1991-10-01 1991-10-01 Differential gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9120782A GB2260170B (en) 1991-10-01 1991-10-01 Differential gear

Publications (3)

Publication Number Publication Date
GB9120782D0 GB9120782D0 (en) 1991-11-13
GB2260170A true GB2260170A (en) 1993-04-07
GB2260170B GB2260170B (en) 1994-09-14

Family

ID=10702201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9120782A Expired - Fee Related GB2260170B (en) 1991-10-01 1991-10-01 Differential gear

Country Status (1)

Country Link
GB (1) GB2260170B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616565B1 (en) * 2002-03-19 2003-09-09 Yao-Yu Chen Differential gear designed for use in light-duty motor vehicles
WO2008106830A1 (en) * 2007-03-02 2008-09-12 Jiansheng Chen Sand off-road vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB312481A (en) * 1928-05-14 1929-05-30 Ernest Walter Roff Improvements relating to differential gearing
GB1359110A (en) * 1971-08-11 1974-07-10 Borg Warner Differential mechanisms
GB2086498A (en) * 1980-10-24 1982-05-12 Ford Motor Co Axle differential
GB2162601A (en) * 1984-08-01 1986-02-05 Glaenzer Spicer Sa Controlled torque transfer differential for a motor vehicle
WO1986002419A1 (en) * 1984-10-19 1986-04-24 Silva Pimenta A Da Sealed differential assembly
EP0189556A1 (en) * 1985-01-28 1986-08-06 Toyota Jidosha Kabushiki Kaisha Limited slip differential

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB312481A (en) * 1928-05-14 1929-05-30 Ernest Walter Roff Improvements relating to differential gearing
GB1359110A (en) * 1971-08-11 1974-07-10 Borg Warner Differential mechanisms
GB2086498A (en) * 1980-10-24 1982-05-12 Ford Motor Co Axle differential
GB2162601A (en) * 1984-08-01 1986-02-05 Glaenzer Spicer Sa Controlled torque transfer differential for a motor vehicle
WO1986002419A1 (en) * 1984-10-19 1986-04-24 Silva Pimenta A Da Sealed differential assembly
EP0189556A1 (en) * 1985-01-28 1986-08-06 Toyota Jidosha Kabushiki Kaisha Limited slip differential

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616565B1 (en) * 2002-03-19 2003-09-09 Yao-Yu Chen Differential gear designed for use in light-duty motor vehicles
WO2008106830A1 (en) * 2007-03-02 2008-09-12 Jiansheng Chen Sand off-road vehicle

Also Published As

Publication number Publication date
GB9120782D0 (en) 1991-11-13
GB2260170B (en) 1994-09-14

Similar Documents

Publication Publication Date Title
US6991571B2 (en) Variable ratio drive system
US20030109350A1 (en) Vehicular differential with ring gear directly loading the differential pin
KR880002691A (en) Front wheel slip limit differential system in automotive power train
US4729257A (en) Balanced steerable transmission
JP3462496B2 (en) Differential device
EP1155898A4 (en) Drivingly traveling of vehicle and integrated hydromechanical axle driving device for steering
EP1162082B1 (en) Dual wheel assembly differential
JPH0526054B2 (en)
JP2615086B2 (en) 4-wheel drive vehicle with center differential
EP0148641A2 (en) Differentials
GB2260170A (en) Differential gear
US6182780B1 (en) Multiple wheel drive assembly
GB8526871D0 (en) Differential gears for motor vehicles
US4435996A (en) Differential assembly for vehicles
JP3212780B2 (en) Power transmission device
CA2272313A1 (en) Reverse gear mechanism in front wheel drive transaxles
EP0895891B1 (en) Power transmission device for a rigid wheeled power shovel
US7121971B1 (en) Automatic transmission
JP2802309B2 (en) Power distribution control device for four-wheel drive vehicle
GB2149732A (en) Vehicle transmission
GB2143185A (en) Road wheel differential for light conveyances
JPS62246646A (en) Differential gear device
JPH0692153A (en) Driving power transmitting device for vehicle
JPH0427695Y2 (en)
SU975466A1 (en) Vehicle self-locking differential gear

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971001