Seat belt take-up control system
US-2020282949-A1 · Sep 10, 2020 · US
Webbing take-up device
US2020282947A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020282947-A1 |
| Application number | US-201816644687-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 6, 2018 |
| Priority date | Sep 12, 2017 |
| Publication date | Sep 10, 2020 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
In a webbing take-up device, in a case in which the acceleration with which a webbing is pulled out from a spool, which is based on the radius of the webbing taken up on the spool and the angular acceleration of rotation of the spool in the pull-out direction that are detected by an angle-of-rotation sensor, is equal to or greater than a predetermined acceleration, a lock mechanism locks the rotation of the spool in the pull-out direction. For this reason, the rotation of the spool can be locked on based on the acceleration with which the webbing is pulled out from the spool.
First claim
Opening claim text (preview).
1 .- 5 . (canceled) 6 . A webbing take-up device comprising: a spool on which webbing worn by an occupant is taken up and which is rotated in a pull-out direction when the webbing is pulled out; and a lock mechanism that locks rotation of the spool in a case in which an acceleration with which the webbing is pulled out from the spool is equal to or greater than a predetermined acceleration, wherein the acceleration with which the webbing is pulled out from the spool is detected based on a radius of the webbing taken up on the spool and an angular acceleration of rotation of the spool in the pull-out direction. 7 . The webbing take-up device according to claim 6 , further comprising a detector that detects an angle of rotation of the spool, whereby at least one of the radius of the webbing taken up on the spool or the angular acceleration of rotation of the spool in the pull-out direction is detected. 8 . The webbing take-up device according to claim 6 , further comprising a detector that detects light from at least one of the spool or the webbing, whereby at least one of the radius of the webbing taken up on the spool, the angular acceleration of rotation of the spool in the pull-out direction, or the acceleration with which the webbing is pulled out from the spool is detected. 9 . The webbing take-up device according to any one of claim 6 , wherein the lock mechanism is electrically activated. 10 . A webbing take-up device comprising: a spool on which webbing worn by an occupant is taken up and which is rotated in a pull-out direction when the webbing is pulled out; and a lock mechanism that locks rotation of the spool in a case in which an acceleration with which the webbing is pulled out from the spool is equal to or greater than a predetermined acceleration; and a detector that detects an angle of rotation of the spool, whereby at least one of a radius of the webbing taken up on the spool or an angular acceleration of rotation of the spool in the pull-out direction is detected. 11 . The webbing take-up device according to claim 10 , further comprising a detector that detects light from at least one of the spool or the webbing, whereby at least one of the radius of the webbing taken up on the spool, the angular acceleration of rotation of the spool in the pull-out direction, or the acceleration with which the webbing is pulled out from the spool is detected. 12 . The webbing take-up device according to claim 10 , wherein the lock mechanism is electrically activated.
Assignees
Inventors
Classifications
- B60R22/343Primary
with electrically actuated locking means {(B60R22/3405 takes precedence)} · CPC title
responsive only to belt movement · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2020282947A1 cover?
- In a webbing take-up device, in a case in which the acceleration with which a webbing is pulled out from a spool, which is based on the radius of the webbing taken up on the spool and the angular acceleration of rotation of the spool in the pull-out direction that are detected by an angle-of-rotation sensor, is equal to or greater than a predetermined acceleration, a lock mechanism locks the ro…
- Who is the assignee on this patent?
- Tokai Rika Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60R22/343. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Sep 10 2020 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).