Seat reclining device for vehicle
US-8955911-B2 · Feb 17, 2015 · US
Recliner
US9227533B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9227533-B2 |
| Application number | US-201414446786-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 30, 2014 |
| Priority date | Aug 1, 2013 |
| Publication date | Jan 5, 2016 |
| Grant date | Jan 5, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A recliner has a ratchet and a guide assembled together so as to be rotatable relative to each other, and a pawl supported by the guide in a circumferential direction. The pawl is adapted to inhibit rotational movement of the ratchet relative to the guide when moved to be pushed radially outwards. The pawl is supported by guide walls formed in the guide, and the guide walls are located at circumferentially opposite sides of the pawl. Each guide wall has a recessed part (weak portion) formed at a location spaced in the circumferential direction apart from a contact face of the guide wall which is in contact with the pawl. The recessed part is adapted to undergo local stress concentration and plastic deformation due to pressing force received from the pawl when a large load that causes the pawl to undergo forced deformation in the circumferential direction is applied.
First claim
Opening claim text (preview).
What is claimed is: 1. A recliner that couples a seat back with a base on a floor such that a backrest angle of the seat back can be adjusted, comprising: a ratchet and a guide which are assembled together so as to be rotatable relative to each other; and a pawl supported by the guide in a circumferential direction, the pawl being adapted to mesh with the ratchet when pushed radially outwards so as to inhibit rotational movement of the ratchet relative to the guide, wherein the pawl is sandwiched between and supported by guide walls provided in the guide, the guide walls being located at circumferentially opposite sides of the pawl, and each of the guide walls has a weak portion provided at a location spaced in the circumferential direction apart from a contact face of the guide wall which is in contact with the pawl, the weak portion being adapted to undergo local stress concentration and plastic deformation due to pressing force received from the pawl when a large load that causes the pawl to undergo forced deformation in the circumferential direction is applied. 2. The recliner according to claim 1 , wherein the weak portion is provided at an outer peripheral location of the guide wall. 3. The recliner according to claim 2 , wherein the weak portion comprises a recessed part provided at the outer peripheral location of the guide wall. 4. The recliner according to claim 1 , wherein the pawl is slidable radially outward relative to the guide walls. 5. The recliner according to claim 1 , wherein the weak portion is defined as a rounded right triangular recess that is open radially outward of the guide wall.
Assignees
Inventors
Classifications
- B60N2/2352Primary
with external pawls · CPC title
- B60N2/236Primary
linearly movable · CPC title
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Frequently asked questions
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- What does patent US9227533B2 cover?
- A recliner has a ratchet and a guide assembled together so as to be rotatable relative to each other, and a pawl supported by the guide in a circumferential direction. The pawl is adapted to inhibit rotational movement of the ratchet relative to the guide when moved to be pushed radially outwards. The pawl is supported by guide walls formed in the guide, and the guide walls are located at circu…
- Who is the assignee on this patent?
- Toyota Boshoku Kk
- What technology area does this patent fall under?
- Primary CPC classification B60N2/2352. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 05 2016 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).