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US 5,330,393 AGranted
Gear unit for combination with an auxiliary power consuming unit of a motor-vehicle
AssigneeFichtel & Sachs AG
InventorsReinhard Deppert, Manfred Lutz, Walter Kurz, Wolfgang Baier
Life of this patent
Estimating the term…
Abstract
According to an illustrative embodiment of the invention, a planetary gear box is combined with an electric generator of a motor-vehicle. The planetary gear box comprises a free wheel and a gear change clutch. Such, the transmission ratio of the planetary gear box is changeable. The components of the gear box are arranged at least partially in axially overlapping relationship so that a small overall axial dimension is obtained.
Claims51
A gear unit for combination with an auxiliary power consuming unit of a motor-vehicle, said auxiliary power consuming unit having stator means and an auxiliary unit input shaft with an axis (A), comprising:
- a gear unit input member;
- a gear unit output member;
- planetary gear means, including a sun wheel, a ring wheel, a planetary wheel carrier and at least one planetary wheel on said planetary wheel carrier;
- said gear unit input member, said gear unit output member and said planetary gear means being located in a substantially annular arrangement about said axis (A);
- gear change clutch means for selectively preventing or permitting rotation of said sun wheel with respect to said stator means;
- external means for controlling said gear change clutch means;
- free wheel means for permitting rotation of said gear unit output member with respect to said gear unit input member in a predetermined sense of rotation when said gear change clutch means prevents rotation of said sun wheel and for transmitting input torque from said gear unit input member to said gear unit output member in said predetermined sense of rotation when said gear change clutch means permits rotation of said sun wheel;
- said gear unit input member being continuously in driving connection with said planetary wheel carrier;
- said ring wheel being adapted for continuous driving connection with said gear unit output member;
- said sun wheel having a central passage;
- said gear unit input member being shaped as a gear unit input sleeve extending axially through said central passage of said sun wheel and having a first end portion adjacent to said stator means and a second end portion remote from said stator means;
- said gear unit output member extending axially within said gear unit input member and having a first end portion adjacent to said stator means and a second end portion remote from said stator means;
- said gear unit output member being adapted for being fastened to said auxiliary unit input shaft;
- said gear unit input member being axially fixed and rotatably mounted on said gear unit output member about said axis (A);
- said planetary wheel carrier being mounted for common rotation with said gear unit input member adjacent said first end portion of said gear unit input member axially between said sun wheel and said stator means;
- securing means for drivingly securing said ring wheel with respect to said gear unit output member adjacent said first end portion thereof, said securing means including a ring wheel support member located axially between said planetary wheel carrier and said stator means;
- and
- said second end portion of said gear unit input member being provided with a drive means engagement face about said axis (A).
15 more elements
A gear unit for driving an auxiliary power consuming unit of a motor vehicle, comprising:
- a gear unit input member;
- a gear unit output member;
- planetary gear means, including a sun wheel, a ring wheel, a planetary wheel carrier and at least one planetary wheel on said planetary wheel carrier;
- said gear unit input member, said gear unit output member and said planetary gear means being located in a substantially annular arrangement about said axis (A);
- gear change clutch means and free wheel means for selectively providing torque transmission between said gear unit input member and said gear unit output member through said planetary gear means or a transmission ratio between said gear unit input member and said gear unit output member different from that through said planetary gear means;
- external means for controlling said gear change clutch means;
- a lubricant chamber containing a liquid lubricant for lubrication of said gear unit;
- said lubricant chamber being an annular chamber about said axis (A) accommodating at least one of said planetary gear means and said free wheel means and being rotatable about said axis (A) in response to rotation of said gear unit input member;
- said liquid lubricant in said lubricant chamber forming a lubricant ring adjacent radially outer wall means of said lubricant chamber in response to centrifugal forces, and
- lubricant conveying means being located within said lubricant chamber for conveying lubricant from said lubricant ring towards locations of said gear unit which require lubrication.
7 more elements
A gear unit for driving an auxiliary power consuming unit of a motor vehicle, comprising:
- a gear unit input member;
- a gear unit output member;
- planetary gear means, including a sun wheel, a ring wheel, a planetary wheel carrier and at least one planetary wheel on said planetary wheel carrier;
- said gear unit input member, said gear unit output member and said planetary gear means being located in a substantially annular arrangement about said axis (A);
- gear change clutch means and free wheel means for selectively providing torque transmission between said gear unit input member and said gear unit output member through said planetary gear means or a transmission ratio between said gear unit input member and said gear unit output member different from that through said planetary gear means;
- external means for controlling said gear change clutch means;
- a lubricant chamber containing a liquid lubricant for lubrication of said gear unit;
- said sun wheel, said at least one planetary wheel and said ring wheel being accommodated within said lubricant chamber, said lubricant chamber being confined by a chamber housing and being sealed by rotatable sealing means;
- and
- said chamber housing having radially outer housing wall means, said gear change clutch means being at least partially located radially outwards of said radially outer housing wall means and in axially overlapping relationship therewith.
7 more elements
A gear unit for driving an auxiliary power consuming unit of a motor vehicle, comprising:
- a gear unit input member;
- a gear unit output member;
- planetary gear means, including a sun wheel, a ring wheel, a planetary wheel carrier and at least one planetary wheel on said planetary wheel carrier;
- said gear unit input member, said gear unit output member and said planetary gear means being located in a substantially annular arrangement about said axis (A);
- gear change clutch means and free wheel means for selectively providing torque transmission between said gear unit input member and said gear unit output member through said planetary gear means or a transmission ratio between said gear unit input member and said gear unit output member different from that through said planetary gear means;
- external means for controlling said gear change clutch means;
- a substantially annular lubricant chamber containing a liquid lubricant for lubrication of said gear unit;
- said sun wheel, said at least one planetary wheel and said ring wheel being accommodated within said lubricant chamber;
- said lubricant chamber being confined by a substantially annular chamber housing and being sealed by rotatable sealing means;
- said substantially annular chamber housing having radially outer housing wall means and being rotatable about said axis (A) in response to rotation of said gear unit input member;
- said liquid lubricant in said lubricant chamber forming a lubricant ring adjacent said radially outer wall means of said lubricant chamber in response to centrifugal forces;
- and
- said lubricant chamber containing a volume of lubricant independent of external lubricant supply during operation of said gear unit.
10 more elements
A gear unit for combination with an auxiliary power consuming unit of a motor-vehicle, said auxiliary power consuming unit having stator means and an auxiliary unit input shaft with an axis (A), comprising:
- a gear unit input member;
- a gear unit output member;
- planetary gear means, including a sun wheel, a ring wheel, a planetary wheel carrier and at least one planetary wheel on said planetary wheel carrier;
- said gear unit input member, said gear unit output member and said planetary gear means being located in a substantially annular arrangement about said axis (A);
- gear change clutch means and free wheel means for selectively providing torque transmission between said gear unit input member and said gear unit output member through said planetary gear means or a transmission ratio between said gear unit input member and said gear unit output member different from that through said planetary gear means;
- external means for controlling said gear change clutch means;
- a lubricant chamber containing a liquid lubricant for lubrication of said gear unit;
- means for connecting said gear unit output member for common rotation with said auxiliary unit input shaft in substantial alignment therewith along said axis (A);
- said gear unit input member and said gear unit output member being arranged in a coaxial relationship about said axis (A) and being at least partially coextensive along said axis (A);
- one of said gear unit input member and said gear unit output member being a central member and the other one of said gear unit input member and said gear unit output member being an external member;
- being means provided radially between said gear unit input member and said gear unit output member;
- said planetary gear means and said gear change clutch means being arranged annularly around said external member;
- and
- said gear unit input member and said gear unit output member having respective first end portions adjacent said auxiliary power consuming unit and respective second end portions more remote from said auxiliary power consuming unit, said second end portion of said gear unit input member being provided with a drive means engagement face.
11 more elements
Dependencies are inferred from the claim text.