Center differential unit and planetary gear
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorsKazuo Kanazawa, Hiroshi Ishihara, Shin Kurosaki, Takao Nakagawa, Hirotaka Sato
Life of this patent
Estimating the term…
Abstract
A planetary gear type center differential unit contains a carrier, a first sun gear and a second sun gear provided interiorly of the carrier, a first and second pinions respectively meshing with the first and the second sun gears, a pinion member having a shaft-receiving hole and carrying the first pinion and the second pinion therearound, and a pinion shaft made of carbon/carbon composite. The pinion shaft is supported by the carrier at one end and is inserted into the shaft-receiving hole of the pinion member, so that the pinion shaft directly supports the pinion member so as to rotate.
Claims14
A center differential unit of a planetary gear type comprising:
- a carrier;
- a first sun gear for receiving an output from a transmission and positioned interiorly of said carrier;
- a second sun gear provided on an output side with respect to said first sun gear and positioned interiorly of said carrier;
- a first pinion meshing with said first sun gear;
- a second pinion meshing with said second sun gear;
- a pinion member carrying said first pinion and said second pinion therearound, said pinion member having a shaft-receiving hole;
- and
- a pinion shaft having at least a surface of carbon/carbon composite, said pinion shaft supported by said carrier at one end on the output side and directly supporting said pinion member so as to rotate by being inserted into said shaft-receiving hole.
A center differential unit of a planetary gear type comprising:
- a carrier;
- a first sun gear for receiving an output from a transmission and positioned interiorly of said carrier;
- a second sun gear provided on an output side with respect to said first sun gear and positioned interiorly of said carrier;
- a first pinion meshing with said first sun gear;
- a second pinion meshing with said second sun gear;
- a pinion member carrying said first pinion and said second pinion therearound, said pinion member having a shaft-receiving hole;
- a bearing made of carbon/carbon composite provided in said shaft-receiving hole;
- and
- a pinion shaft made of a steel material, said pinion shaft supported by said carrier at one end on the output side and directly supporting said pinion member so as to rotate by being inserted into said shaft-receiving hole.
A planetary gear comprising:
- a carrier;
- a sun gear provided interiorly of said carrier;
- a pinion meshing with said sun gear;
- a pinion member carrying said pinion therearound, said pinion member having a shaft-receiving hole;
- and
- a pinion shaft having at least a surface of carbon/carbon composite, said pinion shaft supported by said carrier and directly supporting said pinion member so as to rotate by being inserted into said shaft-receiving hole of said pinion member.
A planetary gear comprising:
- a carrier;
- a sun gear provided interiorly of said carrier;
- a pinion meshing with said sun gear;
- a pinion member carrying said pinion therearound, said pinion member having a shaft-receiving hole;
- a bearing made of carbon/carbon composite provided in said shaft-receiving hole;
- and
- a pinion shaft made of a steel material, said pinion shaft supported by said carrier and directly supporting said pinion member so as to rotate by being inserted into said shaft-receiving hole.
Dependencies are inferred from the claim text.