Back frame for vehicle seat
US-2018086241-A1 · Mar 29, 2018 · US
Back frame structure of vehicle seat
US10493883B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10493883-B2 |
| Application number | US-201715598531-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 18, 2017 |
| Priority date | May 25, 2016 |
| Publication date | Dec 3, 2019 |
| Grant date | Dec 3, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
A back frame structure of a vehicle seat including: first and second side frames; and an upper frame that connects the first and second side frames, wherein the first side frame has a constant cross section and the second side frame has a constant cross section, wherein an outline shape of the cross section of the first side frame and an outline shape of the cross section of the second side frame are in line symmetry with respect to a centerline of the back frame in a left and right direction, and wherein a geometrical moment of inertia of the cross section of the first side frame is larger than a geometrical moment of inertia of the cross section of the second side frame.
First claim
Opening claim text (preview).
What is claimed is: 1. A back frame structure of a vehicle seat, the back frame structure comprising: first and second side frames that extend in an up and down direction; and an upper frame that connects an upper end side of the first side frame and an upper end side of the second side frame in a bridging manner, wherein the first side frame has a constant closed cross section portion extending between a recliner connection region and the upper frame, and the second side frame has a constant closed cross section portion extending between the recliner connection region and the upper frame, wherein an outline shape of the cross section of the first side frame and an outline shape of the cross section of the second side frame are in line symmetry with respect to a centerline of the back frame in a left and right direction, and wherein a geometrical moment of inertia of the cross section of the first side frame is larger than a geometrical moment of inertia of the cross section of the second side frame. 2. The back frame structure of the vehicle seat according to claim 1 , wherein the geometrical moment of inertia of the cross section of the first side frame about an axis extending in the left and right direction is larger than the geometrical moment of inertia of the cross section of the second side frame about an axis extending in the left and right direction. 3. The back frame structure of the vehicle seat according to claim 1 , wherein the cross sections of the first side frame and the second side frame are polygonal closed sections. 4. The back frame structure of the vehicle seat according to claim 3 , wherein a wall thickness of the first side in a front and rear direction of the cross section of the first side frame is larger than a wall thickness of the second side frame in the front and rear direction of the cross section of the second side frame. 5. The back frame structure of the vehicle seat according to claim 1 , wherein the first and second side frames are each extruded structures. 6. The back frame structure of the vehicle seat according to claim 1 , wherein the first side frame comprises a wall having wall portions, wherein the wall has a non-uniform thickness.
Assignees
Inventors
Classifications
Belt guides · CPC title
Seat or seat parts characterised by comprising plural parts or pieces · CPC title
with sleeves located in the back-rest for guiding the rods of the head-rest · CPC title
- B60N2/68Primary
Seat frames · CPC title
Joining means · CPC title
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Frequently asked questions
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- What does patent US10493883B2 cover?
- A back frame structure of a vehicle seat including: first and second side frames; and an upper frame that connects the first and second side frames, wherein the first side frame has a constant cross section and the second side frame has a constant cross section, wherein an outline shape of the cross section of the first side frame and an outline shape of the cross section of the second side fra…
- Who is the assignee on this patent?
- Toyota Boshoku Kk
- What technology area does this patent fall under?
- Primary CPC classification B60N2/68. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 03 2019 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).