In-wheel motor drive device
US-10933737-B2 · Mar 2, 2021 · US
In-wheel motor drive device
US11679663B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11679663-B2 |
| Application number | US-201917268332-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 9, 2019 |
| Priority date | Sep 10, 2018 |
| Publication date | Jun 20, 2023 |
| Grant date | Jun 20, 2023 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An input gear, an output gear, an input-side intermediate gear, and an output-side intermediate gear are helical gears. The output gear and the output-side intermediate gear have a larger module than the input gear and the input-side intermediate gear. The input gear and the input-side intermediate gear have a larger twisting angle than the output gear and the output-side intermediate gear. The output gear and the output-side intermediate gear have a larger effective tooth length than the input gear and the input-side intermediate gear.
First claim
Opening claim text (preview).
The invention claimed is: 1. An in-wheel motor drive device comprising: an electric motor part; a wheel bearing part; and a speed reducer part configured to decelerate a rotation of the electric motor part and transmit the rotation to the wheel bearing part, wherein the speed reducer part is a parallel shaft gear reduction mechanism having three or more axes, the parallel shaft gear reduction mechanism including an input shaft integrally rotating with a rotating shaft of the electric motor part and having an input gear, an output shaft integrally rotating with a rotating shaft of the wheel bearing part and having an output gear, and an intermediate shaft having an input-side intermediate gear that meshes with the input gear and an output-side intermediate gear that meshes with the output gear, the input gear, the output gear, the input-side intermediate gear, and the output-side intermediate gear are helical gears, the output gear and the output-side intermediate gear have a larger module than the input gear and the input-side intermediate gear, the input gear and the input-side intermediate gear have a larger twisting angle than the output gear and the output-side intermediate gear, and the output gear and the output-side intermediate gear have a larger effective tooth length than the input gear and the input-side intermediate gear. 2. The in-wheel motor drive device according to claim 1 , wherein the input gear and the input-side intermediate gear have a smaller front meshing pressure angle than the output gear and the output-side intermediate gear.
Assignees
Inventors
Classifications
Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel · CPC title
- B60K7/0007Primary
the motor being electric · CPC title
the motor axle being parallel to the wheel axle · CPC title
- H02K7/14Primary
Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title
involving more than two intermeshing members · CPC title
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Frequently asked questions
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- What does patent US11679663B2 cover?
- An input gear, an output gear, an input-side intermediate gear, and an output-side intermediate gear are helical gears. The output gear and the output-side intermediate gear have a larger module than the input gear and the input-side intermediate gear. The input gear and the input-side intermediate gear have a larger twisting angle than the output gear and the output-side intermediate gear. The…
- Who is the assignee on this patent?
- Ntn Toyo Bearing Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60K7/0007. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 20 2023 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).