Air-bag
First Claim
1. An air-bag (10) integrally formed by hollow weaving, comprising a main chamber (11) and a sub-chamber (12), wherein the main chamber and the sub-chamber are connected via a communication portion (13), the sub-chamber has a configuration that is expanded by a gas supplied from the main chamber via the communication portion, the communication portion or a region adjacent to the communication portion is made up of a multilayer woven structure portion (14), the multilayer woven structure portion is made up of a combination of three-layer weave and four-layer weave, the four-layer weave is disposed on at least one of a main chamber side or a sub-chamber side of the three-layer weave, and wherein when the main chamber inflates, an intermediate layer (a1) of the four-layer weave on the sub-chamber side and an intermediate layer (b) of the three-layer weave of the multilayer woven structure portion give rise to yarn slippage, such that weaves of the intermediate layer (a1) of the four-layer weave on the sub-chamber side and the intermediate layer (b) of the three-layer weave gather on the sub-chamber side of the multilayer woven structure portion, whereby the multilayer woven structure portion causes an opening of the communication portion to become smaller, and thus temporarily hinders the gas flowing into the sub-chamber.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an air-bag capable of further reducing damage value to a passenger and limiting the amount of use of inflator gas by limiting an excessive increase in the internal pressure of the air-bag upon contacting the passenger while increasing the speed of deployment in a passenger protection area. The air-bag includes a main chamber and a sub-chamber that are connected via a communication portion, wherein the communication portion or a region adjacent to the communication portion is configured of a multilayer structure portion comprising three or more layers.
31 Citations
16 Claims
- 1. An air-bag (10) integrally formed by hollow weaving, comprising a main chamber (11) and a sub-chamber (12), wherein the main chamber and the sub-chamber are connected via a communication portion (13), the sub-chamber has a configuration that is expanded by a gas supplied from the main chamber via the communication portion, the communication portion or a region adjacent to the communication portion is made up of a multilayer woven structure portion (14), the multilayer woven structure portion is made up of a combination of three-layer weave and four-layer weave, the four-layer weave is disposed on at least one of a main chamber side or a sub-chamber side of the three-layer weave, and wherein when the main chamber inflates, an intermediate layer (a1) of the four-layer weave on the sub-chamber side and an intermediate layer (b) of the three-layer weave of the multilayer woven structure portion give rise to yarn slippage, such that weaves of the intermediate layer (a1) of the four-layer weave on the sub-chamber side and the intermediate layer (b) of the three-layer weave gather on the sub-chamber side of the multilayer woven structure portion, whereby the multilayer woven structure portion causes an opening of the communication portion to become smaller, and thus temporarily hinders the gas flowing into the sub-chamber.
- 13. An air-bag integrally formed by hollow weaving, comprising a main chamber and a sub-chamber, wherein the main chamber and the sub-chamber are connected via a communication portion, the sub-chamber has a configuration that is expanded by a gas supplied from the main chamber via the communication portion, the communication portion or a region adjacent to the communication portion is made up of a multilayer woven structure portion, wherein the multilayer woven structure portion is made of a three-layer weave, and wherein when the main chamber inflates, an intermediate layer (b) of the three-layer weave of the multilayer woven structure portion gives rise to yarn slippage, such that weaves of the intermediate layer (b) of the three-layer weave gather on the sub-chamber side of the multilayer woven structure portion, whereby the multilayer woven structure portion causes an opening of the communication portion to become smaller, and thus temporarily hinders the gas flowing into the sub-chamber.
Specification