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US 11,142,064 B2Granted
Electric vehicle
AssigneeHonda Motor Co., Ltd.
InventorsTatsuya Ohzu, Yutaka Arimura, Daisuke Hoshino, Shingo Soma, Yosuke Tanaka
Life of this patent
Estimating the term…
Abstract
In an electric vehicle including a motor shaft connected to a drive motor, a counter shaft coupled with the motor shaft, a drive shaft coupled with the counter shaft, a drive wheel coupled with the drive shaft, a plurality of bearings configured to support the counter shaft, and a plurality of gears configured to rotate integrally with the counter shaft, a torque sensor is disposed in a region in which a slope of a bending moment occurring on the counter shaft is minimum at a time that the drive motor is driven.
Claims10
An electric vehicle comprising:
- a drive motor;
- a motor shaft connected to the drive motor;
- a counter shaft coupled with the motor shaft;
- a drive shaft coupled with the counter shaft;
- a drive wheel coupled with the drive shaft;
- a plurality of bearings configured to support the counter shaft;
- and
- a plurality of gears configured to rotate integrally with the counter shaft;
- wherein a torque sensor is disposed in a region in which a slope of a bending moment occurring on the counter shaft is minimum at a time that the drive motor is driven.
6 more elements
An electric vehicle comprising:
- a drive motor;
- a motor shaft connected to the drive motor;
- a counter shaft coupled with the motor shaft;
- a drive shaft coupled with the counter shaft;
- a drive wheel coupled with the drive shaft;
- a first bearing, a second bearing, and a third bearing configured to support the counter shaft;
- and
- a first gear and a second gear configured to rotate integrally with the counter shaft;
- wherein a positional relationship between the motor shaft, the counter shaft, and the drive shaft is defined in a manner so that, when viewed in an axial cross-section of the motor shaft, the counter shaft, and the drive shaft, respective centers of the motor shaft, the counter shaft, and the drive shaft are aligned respectively on a straight line;
- and assuming that a lateral load by the first gear is represented by F;
- a lateral load by the second gear is represented by aF where “a” indicates a gear ratio;
- a distance from the first bearing to the second bearing is represented by l1;
- a distance from the second bearing to the third bearing is represented by l2;
- a distance from the first bearing to the first gear is represented by l3;
- a distance from the first gear to the second bearing is represented by l4;
- a distance from the second bearing to the second gear is represented by l5;
- and
- a distance from the second gear to the third bearing is represented by l6;
- the first bearing, the second bearing, the first gear, and the second gear are arranged in a positional relationship satisfying a following expression (a) or a following expression (b):
- a
- =
- 2
-
- l
- 2
-
- l
- 3
-
- (
- l
- 1
- +
- l
- 2
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- l
- 4
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- l
- 6
-
- (
- l
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- 2
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- l
- 6
- 2
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-
- [
- (
- l
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- l
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-
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- l
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- 2
-
- l
- 1
-
- (
- l
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- l
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- +
- l
- 4
- ]
- (
- a
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- 1
- a
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- 2
-
- l
- 1
-
- l
- 6
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- l
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- l
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- l
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- l
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-
- [
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- l
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- l
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-
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- l
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- l
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- 2
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- l
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- .
- (
- b
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158 more elements
An electric vehicle comprising:
- a drive motor;
- a motor shaft connected to the drive motor;
- a counter shaft coupled with the motor shaft;
- a drive shaft coupled with the counter shaft;
- a drive wheel coupled with the drive shaft;
- a first bearing and a second bearing configured to support the counter shaft;
- and
- a first gear and a second gear configured to rotate integrally with the counter shaft;
- wherein a positional relationship between the motor shaft, the counter shaft, and the drive shaft is defined in a manner so that, when viewed in an axial cross-section of the motor shaft, the counter shaft, and the drive shaft, respective centers of the motor shaft, the counter shaft, and the drive shaft are aligned respectively on a straight line;
- and assuming that a lateral load by the first gear is represented by F;
- a lateral load by the second gear is represented by aF where “a” indicates a gear ratio;
- a distance from the first bearing to the second bearing is represented by L;
- a distance from the first bearing to the first gear is represented by L1;
- and
- a distance from the first gear to the second gear is represented by L2;
- the first bearing, the second bearing, the first gear, and the second gear are arranged in a positional relationship satisfying a following expression (c):
- a
- =
- L
- 1
- L
- -
- L
- 1
- -
- L
- 2
- .
- (
- c
- )
28 more elements
Dependencies are inferred from the claim text.