AIR BELT DEVICE

• US 20150054264A1
• Filed: 08/05/2014
• Published: 02/26/2015
• Est. Priority Date: 08/21/2013
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: HIRAKO, Yutaka
• Granted Patent: US 9,283,915 B2
• Time in Patent Office: Days
• US Class Current: 280/728.3
• CPC Class Codes: B60R 2021/0048 Head
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 21/18 the inflatable member formed as a belt or harness or combined with a belt or harness arrangement
• CPC Class Codes: B60R 21/231 characterised by their shape, construction or spatial configuration

Abstract

An air belt device includes a shoulder belt section that is worn from a shoulder on one side in a seat width direction to a lumbar on another side in the seat width direction of a passenger, who is seated on a seat. The shoulder belt section includes an inflation section that is inflated by a supply of gas and in which a portion on a head side of the passenger with respect to a center section in a width direction of the shoulder belt section is deployed to be larger than a portion on an opposite side from the head side.

Claims

1. An air belt device comprising:

a shoulder belt section that is worn from a shoulder on one side in a seat width direction of a passenger who is seated on a seat to a lumbar on another side in the seat width direction, wherein

the shoulder belt section includes an inflation section that is inflated by a supply of gas and in which a portion on a head side of the passenger with respect to a center section in a width direction of the shoulder belt section is deployed to be larger than a portion on an opposite side from the head side.

2. The air belt device according to claim 1, wherein

the inflation section includes a bag that is inflated from a folded state by the supply of the gas, and

a peripheral length of a portion of the bag that is deployed on the head side with respect to the center section in the width direction of the shoulder belt section is longer than a peripheral length of a portion thereof that is deployed on the opposite side from the head side with respect to the center section in the width direction of the shoulder belt section in a cross-sectional view that is orthogonal to a longitudinal direction of the shoulder belt section in the folded state.

3. The air belt device according to claim 2, wherein

the bag has a middle folded section that is folded inward to a center side in the width direction of the shoulder belt section from the head side.

4. The air belt device according to claim 3, wherein

an end on the head side that includes the middle folded section is sewn at a tear seam that is torn by inflation pressure of the bag.

5. The air belt device according to claim 2, wherein

the bag has a folded back section that is folded back to a center side in the width direction of the shoulder belt section from the head side, and

the inflation section includes a cover member that covers the bag and has a torn section in which a portion in a peripheral direction is torn by inflation pressure of the bag.

6. The air belt device according to claim 1, wherein

the inflation section includes a tether that restricts an inflation thickness on the opposite side from the head side.

7. The air belt device according to claim 6, wherein

the tether is provided on the head opposite side with respect to a center line in a folded state of a bag and connects between base clothes that face each other.

8. The air belt device according to claim 1, wherein

both ends in a longitudinal direction of the inflation section are each joined to a webbing that functions as a non-inflation section of the shoulder belt section such that the inflation section constitutes a portion in a longitudinal direction of the shoulder belt section.

9. The air belt device according to claim 1, wherein

the inflation section is provided on a webbing that constitutes the shoulder belt section.

10. The air belt device according to claim 1, wherein

the shoulder belt section is provided in a rear seat in a two-row seat layout or in a second-row or third-row seat in a three-row seat layout.