Traction motor assembly with gear-interconnected wheel and output shaft
US-9752652-B2 · Sep 5, 2017 · US
Traction motor assembly with gear-interconnected wheel and output shaft
US10316933B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10316933-B2 |
| Application number | US-201715656174-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 21, 2017 |
| Priority date | Feb 18, 2015 |
| Publication date | Jun 11, 2019 |
| Grant date | Jun 11, 2019 |
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- Title
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- Abstract
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- First independent claim
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Abstract
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Electric motors are disclosed. The motors are preferably for use in an automated vehicle, although any one or more of a variety of motor uses are suitable. The motors include lift, turntable, and locomotion motors.
First claim
Opening claim text (preview).
What is claimed is: 1. A mobile machine comprising: a motor assembly including a rotatable output shaft, said output shaft including an output gear; and a rotatable ground-engaging wheel including— a wheel gear, and a hub at least in part circumscribing the wheel gear, said wheel gear drivingly intermeshing with the output gear, such that rotation of the output gear imparts rotation to the wheel, said motor assembly including a motor case, said motor case and said hub cooperatively defining a gear chamber in which the output and wheel gears intermesh, said motor case and said hub cooperatively defining a seal interface that communicates with the gear chamber, said interface comprising a labyrinth. 2. The machine of claim 1 , said hub presenting axially spaced apart hub margins, said wheel gear being disposed axially between said hub margins. 3. The machine of claim 1 , said wheel gear being integrally formed with the hub. 4. The machine of claim 1 , said wheel including a wheel shaft fixed relative to the hub for rotational movement therewith, said wheel gear being defined in spaced relation to the wheel shaft. 5. The machine of claim 4 , said wheel gear comprising a ring gear having a plurality of arcuately spaced apart, radially inwardly directed teeth at least in part cooperatively circumscribing the wheel shaft, said output gear comprising a pinion gear. 6. The machine of claim 1 , said wheel including a wheel shaft fixed relative to the hub for rotational movement therewith, said wheel being rotatable about a wheel axis, said wheel shaft extending along the wheel axis. 7. The machine of claim 1 , said wheel including a wheel shaft fixed relative to the hub for rotational movement therewith, said hub and said wheel shaft being integrally formed. 8. The machine of claim 1 , said motor assembly including a rotor rotatable about a rotor axis, said rotor including a rotor shaft extending along the rotor axis, said wheel being rotatable about a wheel axis, said rotor axis being laterally offset from the wheel axis. 9. The machine of claim 8 , said rotor shaft comprising the output shaft. 10. The machine of claim 8 , said rotor axis being parallel to the wheel axis. 11. The machine of claim 1 , said motor assembly being devoid of gearing, such that the output gear and the wheel gear define a single-stage gear transmission from the motor assembly to the wheel. 12. The machine of claim 1 , said wheel including a tire circumscribing the hub. 13. The machine of claim 1 , said motor assembly including a motor that includes a rotor rotatable about a rotor axis, said motor assembly including a controller configured to at least in part control operation of the motor, said controller being positioned axially adjacent the motor. 14. The machine of claim 13 , said rotor including a rotor shaft extending along the rotor axis, said rotor shaft comprising the output shaft, said output gear being adjacent one end of the output shaft, said controller being adjacent an opposite end of the output shaft. 15. The machine of claim 1 , said wheel including a ground-engaging component, said ground-engaging component comprising a tire. 16. The machine of claim 15 , said wheel further including a rim disposed between the hub and the tire. 17. The machine of claim 1 , said wheel including a wheel shaft fixed relative to the hub for rotational movement therewith, said wheel gear including a plurality of teeth at least in part cooperatively circumscribing the wheel shaft, said output gear comprising a pinion gear. 18. The machine of claim 1 , said wheel including a wheel shaft fixed relative to the hub for rotational movement therewith, said wheel being rotatable about a wheel axis, said wheel shaft extending along the wheel axis. 19. The machine of claim 1 , said motor case including a circumferential recess that extends axially inward relative to the wheel, said hub including a circumferential wall that extends axially into the recess, with the recess and wall at least in part defining the labyrinth. 20. A mobile machine comprising: a motor assembly including a rotatable output shaft, said output shaft including an output gear; and a rotatable ground-engaging wheel including— a wheel gear, and a hub at least in part circumscribing the wheel gear, said output gear extending into and thereby at least in part surrounded by the wheel gear, said wheel gear drivingly intermeshing with the output gear, such that rotation of the output gear imparts rotation to the wheel, said motor assembly including a motor case, said motor case and said hub cooperatively defining a gear chamber in which the output and wheel gears intermesh, said motor case and said hub cooperatively defining a seal interface that communicates with the gear chamber, said interface comprising a labyrinth. 21. The machine of claim 20 , said motor case including a circumferential recess that extends axially inward relative to the wheel, said hub including a circumferential wall that extends axially into the recess, with the recess and wall at least in part defining the labyrinth.
Assignees
Inventors
Classifications
Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures · CPC title
Gearboxes; Mounting gearing therein · CPC title
Special vehicles · CPC title
to outer stators · CPC title
Machines characterised by numerical values, ranges, mathematical expressions or similar information · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10316933B2 cover?
- Electric motors are disclosed. The motors are preferably for use in an automated vehicle, although any one or more of a variety of motor uses are suitable. The motors include lift, turntable, and locomotion motors.
- Who is the assignee on this patent?
- Nidec Motor Corp
- What technology area does this patent fall under?
- Primary CPC classification H02K1/276. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 11 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).