GB2150665A - Reduction gearing - Google Patents

Reduction gearing Download PDF

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Publication number
GB2150665A
GB2150665A GB08332048A GB8332048A GB2150665A GB 2150665 A GB2150665 A GB 2150665A GB 08332048 A GB08332048 A GB 08332048A GB 8332048 A GB8332048 A GB 8332048A GB 2150665 A GB2150665 A GB 2150665A
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GB
United Kingdom
Prior art keywords
gears
pair
gear
shaft
pinion
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
GB08332048A
Other versions
GB2150665B (en
GB8332048D0 (en
Inventor
Josef Petr Prokopius
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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 GB08332048A priority Critical patent/GB2150665B/en
Publication of GB8332048D0 publication Critical patent/GB8332048D0/en
Publication of GB2150665A publication Critical patent/GB2150665A/en
Application granted granted Critical
Publication of GB2150665B publication Critical patent/GB2150665B/en
Expired legal-status Critical Current

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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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • F16H1/203—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with non-parallel axes
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes

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

Abstract

A reduction gearing arrangement has two pairs of gears, a pinion PG engaged with the larger pair of gears FFG and FSG and an idler gear IG engaged with the smaller pair of gears SFG and SSG. The pinion PG is connected with the input shaft IPS. The idler gear IG is freely rotating on a shaft IDS, which is connected with an output shaft OS at right angles. The gears FFG, SFG and FSG, SSG are contra-rotating by the rotation of pinion gear PG. The output shaft OS rotates around the axis of the two pairs of gears FFG and SFG, FSG and SSG. The numbers of teeth of the larger gears FFG and FSG are different from one another, as are the numbers on the smaller gears SFG, SSG. The arrangement can be employed in any application requiring exceptionally high reduction or increase of ratios and high mechanical efficiency. <IMAGE>

Description

SPECIFICATION Differential gearbox This invention relates to gearboxes and in particular to differential gearboxes.
Gearboxes are well known mechanical devices used for reduction or increase of speed of associated shafts.
There are many types of existing gearboxes in industrial use today especially serving as reduction devices. However the existing gearboxes with very high ratio of reduction or increase in today's use have the disadvantage of low mechanical efficiency as for example in warm gearboxes and large trains of rotating components as in arrangement of straight cut gear gearboxes.
The advantage of the differential gearbox described in this invention is in very simple mechanical arrangement with very high mechanical efficiency. A very high ratio as for example 1 20,000:1 is possible to obtain practically with an arrangement of only two pairs of gears.
According to the present invention, there is provided a differential gearbox comprising a pair of first large gear wheels, each with different number of teeth, situated on the same concentric shaft, with the gear teeth provided on their inner faces near the circumference of the said pair of first large gear wheels, a pinion, serving as an input shaft situated between the said first pair of larger gear wheels and being engaged in their teeth, the pinion axis being at right angles to the axis of the said first pair of larger gear wheels and a second pair of two smaller wheels permanently attached to the said first pair of large gear wheels, each having different number of teeth and being on the common axis with the said first pair of larger wheels and having their teeth provided on the internal faces similarity like the first pair of large gear wheels and an idler gear being engaged with the said second pair of smaller gear wheels and having its shaft at right angles to the axis of the said first and second gear wheels and its shaft being permanently attached to the output shaft situated in the centre axis of the said first and second pairs of gear wheels.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: FFG and FSG is the said first pair of gears; SFG and SSG is the said second pair of gears; IG is idler gear; IDS is idler gear shaft; OS is output shaft; PG is pinion gear; IPS is input shaft; Referring to the accompanying drawing the gearbox comprises a first pair of gears FFG and FSG, a pinion PG being engaged with the first pair of gears FFG and FSG and permanently connected to input shaft IPS, a second pair of gears SFG and SSG, and an idler gear IG being engaged with the said second pair of gears SFG and SSG and being free rotating on the shaft IDS and the shaft IDS being permanently connected at right angles to output shaft OS.
1. A differential gearbox comprising first pair of larger gears, each gear having different number of teeth, the said gears situated on the common concentric shaft and having their gear teeth provided on their inner faces near the circumference and a pinion gear situated there between and being in gear engagement with the said first larger gears, the pinion gear serving as input shaft so that the said first pair of larger gears is contra-rotating, and a second pair of smaller gears being permanently connected with the said first pair of larger gears, each having different number of teeth and the said second pair of smaller gears being engaged in gear teeth with an idler gear situated there between the idler gear being free rotating on the shaft, the shaft being permanently connected at right angles to the output shaft situated on the centre axis of the said first and second pairs of gears.
2. A differential gearbox as claimed in the claim 1, wherein the said pinion gear is comprising two pinion gears, each for one of the said first pair of gears.
3. A differential gearbox as claimed in the claim 1 or claim 2, wherein the said idler gear is comprising two idler gears connected together and each being engaged with one of the said second pair of smaller gears.
4. A differential gearbox as described in the claim 1, claim 2 or claim 3, having the idler gear shaft rotating with the said idler gear.
5. A differential gearbox as described in any of the previous claims, having more than one idler gear.
6. A differential gearbox substantially as described herein with reference to the accompanying drawing.
7. A differential gearbox substantially as described elsewhere in this invention.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Differential gearbox This invention relates to gearboxes and in particular to differential gearboxes. Gearboxes are well known mechanical devices used for reduction or increase of speed of associated shafts. There are many types of existing gearboxes in industrial use today especially serving as reduction devices. However the existing gearboxes with very high ratio of reduction or increase in today's use have the disadvantage of low mechanical efficiency as for example in warm gearboxes and large trains of rotating components as in arrangement of straight cut gear gearboxes. The advantage of the differential gearbox described in this invention is in very simple mechanical arrangement with very high mechanical efficiency. A very high ratio as for example 1 20,000:1 is possible to obtain practically with an arrangement of only two pairs of gears. According to the present invention, there is provided a differential gearbox comprising a pair of first large gear wheels, each with different number of teeth, situated on the same concentric shaft, with the gear teeth provided on their inner faces near the circumference of the said pair of first large gear wheels, a pinion, serving as an input shaft situated between the said first pair of larger gear wheels and being engaged in their teeth, the pinion axis being at right angles to the axis of the said first pair of larger gear wheels and a second pair of two smaller wheels permanently attached to the said first pair of large gear wheels, each having different number of teeth and being on the common axis with the said first pair of larger wheels and having their teeth provided on the internal faces similarity like the first pair of large gear wheels and an idler gear being engaged with the said second pair of smaller gear wheels and having its shaft at right angles to the axis of the said first and second gear wheels and its shaft being permanently attached to the output shaft situated in the centre axis of the said first and second pairs of gear wheels. A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: FFG and FSG is the said first pair of gears; SFG and SSG is the said second pair of gears; IG is idler gear; IDS is idler gear shaft; OS is output shaft; PG is pinion gear; IPS is input shaft; Referring to the accompanying drawing the gearbox comprises a first pair of gears FFG and FSG, a pinion PG being engaged with the first pair of gears FFG and FSG and permanently connected to input shaft IPS, a second pair of gears SFG and SSG, and an idler gear IG being engaged with the said second pair of gears SFG and SSG and being free rotating on the shaft IDS and the shaft IDS being permanently connected at right angles to output shaft OS. CLAIMS
1. A differential gearbox comprising first pair of larger gears, each gear having different number of teeth, the said gears situated on the common concentric shaft and having their gear teeth provided on their inner faces near the circumference and a pinion gear situated there between and being in gear engagement with the said first larger gears, the pinion gear serving as input shaft so that the said first pair of larger gears is contra-rotating, and a second pair of smaller gears being permanently connected with the said first pair of larger gears, each having different number of teeth and the said second pair of smaller gears being engaged in gear teeth with an idler gear situated there between the idler gear being free rotating on the shaft, the shaft being permanently connected at right angles to the output shaft situated on the centre axis of the said first and second pairs of gears.
2. A differential gearbox as claimed in the claim 1, wherein the said pinion gear is comprising two pinion gears, each for one of the said first pair of gears.
3. A differential gearbox as claimed in the claim 1 or claim 2, wherein the said idler gear is comprising two idler gears connected together and each being engaged with one of the said second pair of smaller gears.
4. A differential gearbox as described in the claim 1, claim 2 or claim 3, having the idler gear shaft rotating with the said idler gear.
5. A differential gearbox as described in any of the previous claims, having more than one idler gear.
6. A differential gearbox substantially as described herein with reference to the accompanying drawing.
7. A differential gearbox substantially as described elsewhere in this invention.
GB08332048A 1983-11-30 1983-11-30 Reduction gearing Expired GB2150665B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08332048A GB2150665B (en) 1983-11-30 1983-11-30 Reduction gearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08332048A GB2150665B (en) 1983-11-30 1983-11-30 Reduction gearing

Publications (3)

Publication Number Publication Date
GB8332048D0 GB8332048D0 (en) 1984-01-04
GB2150665A true GB2150665A (en) 1985-07-03
GB2150665B GB2150665B (en) 1986-11-05

Family

ID=10552645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08332048A Expired GB2150665B (en) 1983-11-30 1983-11-30 Reduction gearing

Country Status (1)

Country Link
GB (1) GB2150665B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0642636A1 (en) * 1992-05-26 1995-03-15 Lucas Western, Inc. A gear arrangement
WO2007028470A1 (en) * 2005-09-02 2007-03-15 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Gear mechanism, in particular linkage mechanism
DE102008023391A1 (en) * 2008-05-13 2009-11-19 Magna Powertrain Ag & Co Kg differential gear
FR3020106A1 (en) * 2014-04-17 2015-10-23 Faurecia Sieges Automobile TRANSMISSION DEVICE WITH HIGH TRANSMISSION RATIO

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0642636A1 (en) * 1992-05-26 1995-03-15 Lucas Western, Inc. A gear arrangement
EP0642636A4 (en) * 1992-05-26 1995-07-19 Lucas Western Inc Increased capacity face gear arrangement for transmitting torque through an angle to a plurality of power paths.
WO2007028470A1 (en) * 2005-09-02 2007-03-15 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Gear mechanism, in particular linkage mechanism
DE102008023391A1 (en) * 2008-05-13 2009-11-19 Magna Powertrain Ag & Co Kg differential gear
FR3020106A1 (en) * 2014-04-17 2015-10-23 Faurecia Sieges Automobile TRANSMISSION DEVICE WITH HIGH TRANSMISSION RATIO

Also Published As

Publication number Publication date
GB2150665B (en) 1986-11-05
GB8332048D0 (en) 1984-01-04

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971130