Webbing take-up device
US-2019092276-A1 · Mar 28, 2019 · US
Pretensioner, seatbelt retractor, seatbelt device, and method of manufacturing pretensioner
US2018178752A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018178752-A1 |
| Application number | US-201715850331-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 21, 2017 |
| Priority date | Dec 28, 2016 |
| Publication date | Jun 28, 2018 |
| 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.
A pretensioner includes a drive wheel provided with a plurality of engaging teeth for rotating a spool, the spool for winding up a webbing for fastening a passenger; and an elongated resin component that transmits power to the drive wheel during an emergency, wherein the plurality of teeth is positioned such that, when one engaging tooth is caused to contact a tip of the elongated resin component in an approximately planer manner, another engaging tooth adjacent to the one engaging tooth in a direction opposite to a rotation direction can contact a side surface of the elongated resin component.
First claim
Opening claim text (preview).
What is claimed is: 1 . A pretensioner comprising: a drive wheel provided with a plurality of engaging teeth for rotating a spool, the spool for winding up a webbing for fastening a passenger; and an elongated resin component that transmits power to the drive wheel during an emergency, wherein the plurality of teeth is positioned such that, when one engaging tooth is caused to contact a tip of the elongated resin component in an approximately planer manner, another engaging tooth adjacent to the one engaging tooth in a direction opposite to a rotation direction can contact a side surface of the elongated resin component. 2 . The pretensioner according to claim 1 , wherein the one engaging tooth is provided with a gear tooth surface to contact the elongated resin component in a planer manner. 3 . The pretensioner according to claim 1 , wherein the elongated resin component is provided with a tapered surface to contact a gear tooth surface of the one engaging tooth in a planer manner. 4 . The pretensioner according to claim 1 , wherein the elongated resin component is provided with a recess on the side surface, the recess being capable of locking a tip of the adjacent engaging tooth. 5 . A seatbelt retractor comprising: a spool for winding up a webbing for fastening a passenger; and a pretensioner for winding up the webbing to remove a slack during an emergency, wherein the pretensioner includes a drive wheel provided with a plurality of engaging teeth for driving the spool, and an elongated resin component that transmits power to the drive wheel during the emergency, and wherein the plurality of teeth is positioned such that, when one engaging tooth is caused to contact a tip of the elongated resin component in an approximately planer manner, another engaging tooth adjacent to the one engaging tooth in a direction opposite to a rotation direction can contact a side surface of the elongated resin component. 6 . A seatbelt device comprising: a webbing for fastening a passenger; a seatbelt retractor for winding up the webbing; a buckle positioned at a seat, and a seatbelt tongue attached to the webbing, wherein the seatbelt retractor includes a spool for winding up the webbing, and a pretensioner for winding up the webbing to remove a slack during an emergency, wherein the pretensioner includes a drive wheel provided with a plurality of engaging teeth for driving the spool, and an elongated resin component that transmits power to the drive wheel during the emergency, and wherein the plurality of teeth is positioned such that, when one engaging tooth is caused to contact a tip of the elongated resin component in an approximately planer manner, another engaging tooth adjacent to the one engaging tooth in a direction opposite to a rotation direction can contact a side surface of the elongated resin component. 7 . A method of manufacturing a pretensioner including a drive wheel provided with a plurality of engaging teeth for rotating a spool, the spool for winding up a webbing for fastening a passenger, and an elongated resin component that transmits power to the drive wheel during an emergency, wherein, in the method of manufacturing the pretensioner, the drive wheel is formed such that, when one engaging tooth is caused to contact a tip of the elongated resin component in an approximately planer manner, another engaging tooth adjacent to the one engaging tooth in a direction opposite to a rotation direction contacts a side surface of the elongated resin component. 8 . The method of manufacturing the pretensioner according to claim 7 , wherein a recess is formed on the side surface of the elongated resin component, the recess being for locking a tip of the adjacent engaging tooth.
Assignees
Inventors
Classifications
the driving means being a belt, a chain or the like · CPC title
- B60R22/4619Primary
Transmission of tensioning power by cable, e.g. using a clutch on reel side · CPC title
characterised by fluid actuators, e.g. pyrotechnic gas generators (actuating a cable B60R22/4619) · CPC title
for buckles · CPC title
- B60R22/4633Primary
Linear actuators, e.g. comprising a piston moving along reel axis and rotating along its own axis · 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 US2018178752A1 cover?
- A pretensioner includes a drive wheel provided with a plurality of engaging teeth for rotating a spool, the spool for winding up a webbing for fastening a passenger; and an elongated resin component that transmits power to the drive wheel during an emergency, wherein the plurality of teeth is positioned such that, when one engaging tooth is caused to contact a tip of the elongated resin compone…
- Who is the assignee on this patent?
- Takata Corp
- What technology area does this patent fall under?
- Primary CPC classification B60R22/4619. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jun 28 2018 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).