Hybrid drive device
First Claim
1. A hybrid drive device, comprisinga drive device input shaft coupled to an engine,a rotary electrical machine,a transmission, which shifts and outputs rotary drive force transferred from at least one of the rotary electrical machine and the drive device input,a transmission case accommodating the transmission,a rotary electrical machine case having a joint surface joined to the transmission case,a step portion having a reduced diameter as compared to a portion of the rotary electric machine case located closer to an input end side of the drive device input shaft when seen from the input end side, is provided in an inner peripheral portion of the rotary electrical machine case,a partition wall through which the drive device input shaft penetrates and which supports the rotary electrical machine from the input shaft input end side,a differential gear having an axis that is different from an axis of the rotary electrical machine, anda stator of the rotary electrical machine is fixed to the partition wall,wherein a partition wall/rotary electric machine structure, in which the partition wall and the rotary electrical machine are substantially combined into a unit, is fixed to the step portion,wherein the partition wall comprises a cylindrical portion covering the stator from an outer peripheral side and engaging with an inner surface of the rotary electrical machine case and the cylindrical portion of the partition wall has a part which is shorter in a circumferential direction than in an axial direction, andwherein a length of the cylindrical portion in the axial direction is shortened in a portion of the cylindrical portion adjacent the differential gear.
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Accused Products
Abstract
A hybrid drive device including a drive device input shaft coupled to an engine, a rotary electrical machine, a transmission shifting and outputting rotary drive transferred from the rotary electrical machine or the drive device input shaft or the both of them, a transmission case accommodating the transmission, and a rotary electrical machine case having a joint surface joining with the transmission case, a step portion with a diameter which is reduced when seen from an input shaft input end side is provided in an inner peripheral portion of the rotary electrical machine case, and a partition wall supporting the rotary electrical machine from the input shaft input end side is fixed to the step portion.
50 Citations
19 Claims
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1. A hybrid drive device, comprising
a drive device input shaft coupled to an engine, a rotary electrical machine, a transmission, which shifts and outputs rotary drive force transferred from at least one of the rotary electrical machine and the drive device input, a transmission case accommodating the transmission, a rotary electrical machine case having a joint surface joined to the transmission case, a step portion having a reduced diameter as compared to a portion of the rotary electric machine case located closer to an input end side of the drive device input shaft when seen from the input end side, is provided in an inner peripheral portion of the rotary electrical machine case, a partition wall through which the drive device input shaft penetrates and which supports the rotary electrical machine from the input shaft input end side, a differential gear having an axis that is different from an axis of the rotary electrical machine, and a stator of the rotary electrical machine is fixed to the partition wall, wherein a partition wall/rotary electric machine structure, in which the partition wall and the rotary electrical machine are substantially combined into a unit, is fixed to the step portion, wherein the partition wall comprises a cylindrical portion covering the stator from an outer peripheral side and engaging with an inner surface of the rotary electrical machine case and the cylindrical portion of the partition wall has a part which is shorter in a circumferential direction than in an axial direction, and wherein a length of the cylindrical portion in the axial direction is shortened in a portion of the cylindrical portion adjacent the differential gear.
Specification