Vehicle power device and wheel bearing with generator
US-2023094579-A1 · Mar 30, 2023 · US
Apparatus for measuring speed of vehicle having in-wheel motor
US2021389340A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021389340-A1 |
| Application number | US-202117463411-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 31, 2021 |
| Priority date | Aug 16, 2018 |
| Publication date | Dec 16, 2021 |
| Grant date | — |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
An apparatus for measuring a speed of a vehicle having an in-wheel motor including a lock nut part fixed to an outer portion of a rotation shaft rotated by receiving power of the in-wheel motor, and restricting movement of a bearing part positioned outside the rotation shaft; a connection part coupled to the lock nut part; a magnet part having a magnetic force, and fixed to the connection part; and a speed sensor part installed to be separated from the magnet part, and measuring rotations of the magnet part.
First claim
Opening claim text (preview).
What is claimed is: 1 . An apparatus for measuring a speed of a vehicle having an in-wheel motor, comprising: a lock nut part fixed to an outer portion of a rotation shaft configured to be rotated by receiving power of the in-wheel motor, the lock nut part being configured to restrict a movement of a bearing part positioned outside the rotation shaft; and a speed sensor part separated from the lock nut part and configured to measure a rotation of the lock nut part. 2 . The apparatus according to claim 1 , wherein the lock nut part comprises: a lock nut body having a ring shape and locked to the outer portion of the rotation shaft; and outer projections projecting on a circumferential outer surface of the lock nut body in shapes of prominences and depressions, and measured by the speed sensor part. 3 . The apparatus according to claim 2 , wherein the lock nut part further comprises engagement grooves forming groove portions between the adjacent outer projections. 4 . The apparatus according to claim 1 , further comprising a magnet part having a magnetic force and fixed to the lock nut part so as to be separated from the speed sensor part. 5 . The apparatus according to claim 4 , wherein the magnet part is formed by sintering powder having a magnetic force and bonded to a rim of the lock nut part. 6 . The apparatus according to claim 4 , wherein the magnet part comprises: a magnet body facing an upper surface of the lock nut part and extending in a ring shape; and engagement projections extending from the magnet body and inserted into engagement grooves in an outer portion of the lock nut part. 7 . The apparatus according to claim 4 , wherein the rubber magnet part is bonded to the lock nut part by applying vulcanization.
Assignees
Inventors
Classifications
using electric or magnetic means (G01D5/06 takes precedence) · CPC title
characterised by the fixation of the hub to the axle · CPC title
the motor being electric · CPC title
by means of locknuts · CPC title
- G01P3/487Primary
delivered by rotating magnets · CPC title
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Frequently asked questions
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- What does patent US2021389340A1 cover?
- An apparatus for measuring a speed of a vehicle having an in-wheel motor including a lock nut part fixed to an outer portion of a rotation shaft rotated by receiving power of the in-wheel motor, and restricting movement of a bearing part positioned outside the rotation shaft; a connection part coupled to the lock nut part; a magnet part having a magnetic force, and fixed to the connection part;…
- Who is the assignee on this patent?
- Hyundai Mobis Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01P3/487. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Dec 16 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).