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Seat-belt retractor with determination of angle of rotation
US2016280180A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016280180-A1 |
| Application number | US-201414778099-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 18, 2014 |
| Priority date | Mar 20, 2013 |
| Publication date | Sep 29, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A belt retractor ( 10 ) is provided with a retractor shaft ( 12 ) and a device ( 26 ) for determining the rotational speed and/or the angle of rotation of the retractor shaft ( 12 ), with a rotating magnetic element ( 18 ), a stationary magnetic field sensor ( 24 ) and a stationary element guiding the magnetic flux ( 20 ) arranged between the rotating magnetic element ( 18 ) and the magnetic field sensor ( 24 ).
First claim
Opening claim text (preview).
1 - 11 . (canceled) 12 . A belt retractor ( 10 ) comprising a retractor shaft ( 12 ) and a device ( 26 ) for determining the rotational speed and/or the angle of rotation of the retractor shaft ( 12 ), comprising a rotating magnetic element ( 18 ), a stationary magnetic field sensor ( 24 ) and a stationary element guiding the magnetic flux ( 20 ) between the rotating magnetic element ( 18 ) and the magnetic field sensor ( 24 ). 13 . The belt retractor according to claim 12 , wherein the element guiding the magnetic flux ( 20 ) is made of magnetically soft material. 14 . The belt retractor according to claim 12 , wherein the element guiding the magnetic flux ( 20 ) is curved and/or bent. 15 . The belt retractor according to claim 12 , wherein the dimensions of the and face of the element guiding the magnetic flux ( 20 ) facing the magnetic field sensor ( 24 ) substantially correspond to the dimensions of the magnetic field sensor ( 24 ). 16 . The belt retractor according to claim 15 , wherein the end face of the element guiding the magnetic flux ( 20 ) facing the magnetic field sensor ( 24 ) is aligned substantially in parallel to the opposite surface of the magnetic field sensor ( 24 ). 17 . The belt retractor according to claim 12 , wherein the magnetic field sensor ( 24 ) is a Hall sensor, especially an SMD-Hall sensor. 18 . The belt retractor according to claim 17 , wherein the element guiding the magnetic flux is fastened to an ECU board ( 22 ) supporting the Hall sensor. 19 . The belt retractor according to claim 12 , wherein the rotating magnetic element ( 18 ) is connected indirectly or directly to the retractor shaft ( 12 ) or is driven by the same. 20 . The belt retractor according to claim 12 , wherein the rotating magnetic element ( 16 ) includes more than one pair of magnetic poles and is especially configured as a magnetic wheel. 21 . The belt retractor according to any claim 12 , wherein the rotating magnetic element ( 18 ) is arranged on a drive motor ( 16 ), the retractor shaft ( 1 ) and/or a gearwheel ( 28 ) of the belt retractor ( 10 ). 22 . The belt retractor according to claim 12 , wherein the belt retractor ( 10 ) is a retracting tensioner.
Assignees
Inventors
Classifications
Digital circuits therefor · CPC title
delivered by variable reluctance detectors · CPC title
Retractor casings; Mounting thereof · CPC title
influenced by the relative movement between the Hall device and magnetic fields (see G01R33/06) · CPC title
by measuring frequency of generated current or voltage {(in general G01R23/00)} · CPC title
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Frequently asked questions
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- What does patent US2016280180A1 cover?
- A belt retractor ( 10 ) is provided with a retractor shaft ( 12 ) and a device ( 26 ) for determining the rotational speed and/or the angle of rotation of the retractor shaft ( 12 ), with a rotating magnetic element ( 18 ), a stationary magnetic field sensor ( 24 ) and a stationary element guiding the magnetic flux ( 20 ) arranged between the rotating magnetic element ( 18 ) and the magnetic fi…
- Who is the assignee on this patent?
- Trw Automotive Gmbh
- What technology area does this patent fall under?
- Primary CPC classification B60R22/34. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Sep 29 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).