Airbag device

• US 8,573,642 B2
• Filed: 01/24/2013
• Issued: 11/05/2013
• Est. Priority Date: 09/22/2010
• Status: Active Grant

• Current Assignee: Nihon Plast Company Limited
• Original Assignee: Nihon Plast Company Limited
• Inventors: Suzuki, Masato, Iwamoto, Hiroyuki
• Primary Examiner(s): Fleming, Faye M.
• Application Number:
  US13/749,258
• Publication Number:
  US 20130229004A1
• Time in Patent Office: 285 Days
• Field of Search: 280/739, 280/743.1, 280/736, 280/740, 280/741, 280/743.2
• US Class Current: 280/739
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 2021/2395 comprising means to control the venting
• CPC Class Codes: B60R 21/239 characterised by their venting means

Abstract

The present invention provides an airbag device that is capable of restraining a rectification cloth that switches a vent hole to an opened or closed state so as not to be twisted, and that is capable of switching the vent hole from an opened state to a closed state, and further, switching to the opened state. At an initial stage at which an airbag main body inflates and expands, the vent hole 8 is arranged between the leg portions 5, and when the airbag main body is in a predetermined internal pressure state, the vent hole is closed by means of the band-shaped portion 4. If an occupant or the like comes into contact with the airbag main body, a tense state of each of the leg portions is released, the rectification cloth is established in a slackened state, and the vent hole 8 is established in an opened state.

Claims

1. An airbag device including an airbag that is folded, and that is expanded by means of an inflation gas that is supplied from an inflator, wherein

the airbag has a gas excavation hole and a pulling member that is a base cloth valve configured to open or close the gas evacuation hole,

the pulling member has:

a first mount portion that is mounted on an occupant-side airbag portion when the gas evacuation hole is defined as a center;

a second mount portion that is mounted on a vehicle-side airbag portion when the evacuation hole is defined as a center or that is mounted on a vehicle; and

a closed portion that is disposed to be able to be superimposed on the gas evacuation hole;

the pulling member that is the base cloth valve is moved to be pulled by means of relative spacing between the occupant-side airbag portion and the vehicle-side airbag portion, and the closed portion is formed so as to be at least partially superimposed on the gas evacuation hole or so as to move to a restrictive position, and

the first mount portion is formed by a plurality of mount pieces, is mounted at a plurality of mount points at an occupant side, and is configured so that a distance between the plurality of mount portions is large relative to a dimension in an original shape of the plurality of mount pieces of the pulling member that is the base cloth valve.

2. The airbag device according to claim 1, wherein

the first mount portion and the second mount portion are respectively formed by a plurality of mount pieces.