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EP0202951A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Power transfer device for four-wheel drive

Assignee: Toyota Motor Corp
•
Filing: 1986-05-23
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Granted: —
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Expires: 2006-05-23
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Abstract

Abstract A power transfer device adapted for use in combination with a power transmission. The transfer device includes a housing 20, an input shaft 21 rotatably mounted within the housing for drive connection to an output shaft 13 of the transmission, an output shaft 22 rotatably mounted within the housing for rotation relative to the input shaft, a planetary gear unit 30 arranged within the housing and having an input element 31 mounted on the input shaft for rotation therewith and an output element 35 connectable to the output shaft, and a sleeve member 41 axially slidably mounted on the output shaft and shiftable between a first position in which it effects a drive connection between the input and output shafts and a second position in which it effects a drive connection between the output element of the gear unit and the output shaft. A bearing retainer 20c is secured to the housing to retain a bearing 91 carried on the housing for supporting thereon the input shaft, and an oil pump assembly 80 is contained within a cavity of the bearing retainer and mounted on the input shaft at the outside of the housing to be driven by rotation of the input shaft. The pump assembly is arranged to pump up lubricating oil stored in the housing and supply it into an axial bore 21c in the input shaft.

Inventors

  • 👤 Shuichiro Ida
  • 👤 Toshio Yoshinaka
  • 👤 Shuji Nagano

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 11:31
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/0434; B; B60; B60K; B60K17/00; B60K17/34; B60K17/344; B60K17/346; B60K17/3467; F16H57/042; F16H57/043; F16H57/048; F16H57/0482; F16H57/0483; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19991

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 262 words
A power transfe: device adapted for use in combination with a power transmission for automotive vehicles, comprising: a housing adapted to be secured to one end of a casing of said power transmission; an input shaft rotatably mounted within said housing and having an input end for drive connection to an output shaft of said power transmission; an output shaft arranged coaxially with said input shaft and rotatably mounted within said housing for rotation relative to said input shaft; a planetary gear unit arranged within said housing and mounted on said input shaft, said planetary gear unit having an input element mounted on said inupt shaft for rotation therewith and an output element connectable to said output shaft; and a sleeve member axially slidably mounted on said output shaft and shiftable between a first position in which it effects a drive connection between said input and output shafts and a second position in which it effects a drive connection between the output element of said planetary gear uni: and said output shaft; characterized in that a bearing retainer is secured in a fluid-tighi manner to said housing to retain a bearing carried on said housing for supporting thereon said input shaft and that an oil pump assembly is contained within a cavity of said bearing retainer and mounted on said input shaft at the outside of said housing to be driven by rotation of said input shaft, said pump assembly being arranged to pump up lubricating oil stored in said housirg and supply it into an axial bore in said input shaft.
Claim 2
Dependent Claim 262 words
A power transfe: device adapted for use in combination with a power transmission for automotive vehicles, comprising: a housing adapted to be secured to one end of a casing of said power transmission; an input shaft rotatably mounted within said housing and having an input end for drive connection to an output shaft of said power transmission; an output shaft arranged coaxially with said input shaft and rotatably mounted within said housing for rotation relative to said input shaft; a planetary gear unit arranged within said housing and mounted on said input shaft, said planetary gear unit having an input element mounted on said inupt shaft for rotation therewith and an output element connectable to said output shaft; and a sleeve member axially slidably mounted on said output shaft and shiftable between a first position in which it effects a drive connection between said input and output shafts and a second position in which it effects a drive connection between the output element of said planetary gear uni: and said output shaft; characterized in that a bearing retainer is secured in a fluid-tighi manner to said housing to retain a bearing carried on said housing for supporting thereon said input shaft and that an oil pump assembly is contained within a cavity of said bearing retainer and mounted on said input shaft at the outside of said housing to be driven by rotation of said input shaft, said pump assembly being arranged to pump up lubricating oil stored in said housirg and supply it into an axial bore in said input shaft.
Claim 3
Dependent Claim 209 words
A power transfer device as claimed in Claim 1, wherein said oil pump assembly is in the form of a trochoid pump which comprises an inner rotor fixedly mounted on said input shaft for rotation therewith, an outer rotor arranged in surrounding relationship with said inner rotor and rotatably coupled within a cylindrical cavity of small diameter formed in said bearing retainer eccentrically with respect to said input shaft, an end plate coupled within a cylindrical cavity of large diameter formed in said bearing retainer concentrically with respect to said input shaft, said end plate being arranged to position said inner and outer rotors in place by slidable engagement therewith and having an inlet slot in open communication with a pump cavity formed between said inner and outer rotors and an outlet slot in open communication with the pump cavity, and a cover plate fixedly coupled within said cylindrical cavity of large diameter to fasten said end plate in place, said cover plate being formed with an inlet cavity in open communication with the interior of said housing and the inlet slot of said end plate and an outlet cavity in open communication with the outlet slot of said end plate and the axial bore in said input shaft.
Claim 4
Dependent Claim 29 words
A power transfer device as claimed in Claim 2, wherein said end plate is made of pressed sheet metal, and said cover plate is nade of die casted aluminum.
Claim 5
Dependent Claim 24 words
A power transfer device as claimed in Claim 2, wherein said end plate and said cover plate each are made of pressed sheet metal.

References Cited (Backward Citations)

US4489626A Cited

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