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Patent EP0069506A2 successfully refreshed from Google Patents.
EP0069506A2
Expired / Lapsed
EP
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Motor vehicle transmission mechanism
Assignee: Honda Motor Co Ltd
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Filing: 1982-06-23
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Granted: —
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Expires: 2002-06-23
Abstract
Abstract A transmission mechanism wherein a reverse gear train (GR) and a plurality of forward gear trains (G1, G2) are provided between parallel input and output shafts (1 and 2) is characterised in that the reverse gear train (GR) and one of the forward gear trains (G1 or G2) is composed of a single planetary gear arrangement (4). This planetary gear arrangement (4) may be changed over selectively to serve either as said one forward gear train, by engagement of a clutch element (9), or as the reverse gear train by operation of a brake element (10). By utilising a single planetary gear arrangement to serve as both the reverse gear train and one of the forward gear trains, the length of the mechanism in the axial direction is minimised and changeover operation between forward and reverse running is carried out without the use of a selection gear so that generation of impact noise is avoided. The planetary gear arrangement can be disposed on either of the input shaft orthe output shaft giving freedom of design.
Inventors
- 👤 Sadanori Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:32
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
271 words
A transmission mechanism wherein a reverse gear train (GR) and a plurality of forward gear trains (Gl, G2) are provided between an input shaft (1) and \ an output shaft (2) which are disposed in parallel with one another, characterised in that the reverse gear train (GR) and one of the forward gear trains (G1 or G2) is composed of a single planetary gear arrangement (4) comprising a sun gear (5) that moves with the input shaft (1), a ring gear (6) that moves with the output shaft (2) and a supporting arm (8) supporting a planetary gear (7) meshed with the sun and ring gears (5 and 6), the supporting arm (8) being mounted on one of the shafts (1 or 2) and that one of the two gears (5 or 6) that moves with the shaft (1 or 2) on which the supporting arm (8) is mounted being fixed to this shaft whereas the other of the gears (6 or 5) is connected to the shaft (2 or 1) with which it moves through a gear train (11), the planetary gear arrangement (4) being provided with a clutch element (9) for causing the supporting arm (8) to rotate fast with the sun gear (5) in conjunction with the input shaft (1), and a brake element (10) for restraining rotation of the supporting arm (8), so that the planetary gear arrangement (4) may be changed over selectively to serve either as said one forward gear train (G1 or G2) by engagement of the clutch element (-9) or as the reverse gear train (GR) by operation of the brake element (10).
Claim 2
Dependent Claim
271 words
A transmission mechanism wherein a reverse gear train (GR) and a plurality of forward gear trains (Gl, G2) are provided between an input shaft (1) and \ an output shaft (2) which are disposed in parallel with one another, characterised in that the reverse gear train (GR) and one of the forward gear trains (G1 or G2) is composed of a single planetary gear arrangement (4) comprising a sun gear (5) that moves with the input shaft (1), a ring gear (6) that moves with the output shaft (2) and a supporting arm (8) supporting a planetary gear (7) meshed with the sun and ring gears (5 and 6), the supporting arm (8) being mounted on one of the shafts (1 or 2) and that one of the two gears (5 or 6) that moves with the shaft (1 or 2) on which the supporting arm (8) is mounted being fixed to this shaft whereas the other of the gears (6 or 5) is connected to the shaft (2 or 1) with which it moves through a gear train (11), the planetary gear arrangement (4) being provided with a clutch element (9) for causing the supporting arm (8) to rotate fast with the sun gear (5) in conjunction with the input shaft (1), and a brake element (10) for restraining rotation of the supporting arm (8), so that the planetary gear arrangement (4) may be changed over selectively to serve either as said one forward gear train (G1 or G2) by engagement of the clutch element (-9) or as the reverse gear train (GR) by operation of the brake element (10).
Claim 3
Dependent Claim
41 words
A transmission mechanism as claimed in claim 1, wherein the forward gear trains comprise a first speed train (G1) and a second speed train (G2), and wherein it is the second speed train (G2) that is said one forward gear train.
Claim 4
Dependent Claim
51 words
A transmission mechanism as claimed in claim 1, wherein the forward gear trains comprise a first speed train (G1), a second speed train (G2), a third speed train (G3) and a fourth speed train (G4), and wherein it is the third speed train (G3) that is said one forward gear train.
Claim 5
Dependent Claim
51 words
A transmission mechanism as claimed in claim 1, wherein the forward gear trains comprise a first speed train (G1), a second speed train (G2), a third speed train (G3) and a fourth speed train (G4), and wherein it is the fourth speed train (G4) that is said one forward gear train.
Claim 6
Dependent Claim
71 words
A transmission mechanism as claimed in any one of claims 1 to 4, wherein the sun,gear (5), the ring gear (6) and the supporting arm (8) are provided on the input shaft (1), the ring gear (6) is connected at its supporting shaft (6a) to the output shaft (2) through the gear train (11), and the supporting arm (8) is connected to the input shaft (11) through the clutch element (9).
Claim 7
Dependent Claim
72 words
A transmission mechanism as claimed in any one of claims 1 to 4, wherein the sun gear (5), the ring gear (6) and the supporting arm (8) are provided on the output shaft (2), the sun gear (5) is connected at its supporting shaft (5a) to the input shaft (1) through the gear train (11), and the supporting arm (8) is connected through the clutch element (9) to the output shaft (2).
Claim 8
Dependent Claim
60 words
A transmission mechanism as claimed in any one of the preceding claims, wherein the planetary gear arrangement (4) is disposed to one side, and the (or each) forward gear train (G1 or G2) other than said one forward gear train is disposed on the other side of a shaft supporting wall (14) of a casing (13) of the transmission mechanism.
References Cited (Backward Citations)
No citation records indexed.
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