JP2019064573A5 - - Google Patents

Claims (17)

A gas generator that includes a generator body that extends along the axis and has a gas ejection part at one end, and that has a mounting projection that protrudes from the outer surface that surrounds the axis in the generator body.
An airbag device including an airbag having a bag body that expands and expands by an expansion gas supplied from the gas ejection portion, and the gas generator and the airbag are attached to a vehicle at the attachment projection.
The bag body is provided with an insertion port having a size that allows the gas ejection portion to pass through and the gas generator to pass through at a location where the mounting protrusion is provided.
The gas ejection portion is arranged inside the bag body through the insertion port, and the mounting protrusion is arranged outside the bag body .
A belt having one end as a base end and the other end as a tip is arranged on the outside of the bag body.
An airbag device in which the base end portion of the belt is coupled to the bag body, and the tip end portion is locked at a portion of the gas generator separated from the gas ejection portion . Of the belt, the intermediate portion, the airbag device according to claim 1 which is arranged at a position covering the insertion opening between the tip and the base end portion. The airbag device according to claim 2 , wherein the belt extends along the axis. The mounting protrusions are provided at two locations in the direction along the axis.
Of the two mounting projections, the one closer to the gas ejection portion is composed of the first mounting projection, and the one far from the gas ejection portion is composed of the second mounting projection.
The airbag device according to claim 3 , wherein the belt is hooked on the first mounting protrusion at a position adjacent to the base end portion and is locked to the second mounting protrusion at the tip end portion. The belt is configured to be bendable with the base end portion coupled to the bag body as a fulcrum.
The belt is formed with an elongated hole extending from the base end portion toward the tip end portion and through which the first mounting projection is inserted.
At the position where the base end portion of the belt is connected to the bag body, the elongated hole overlaps the insertion port.
The first mounting projection inserted through the elongated hole is engaged with the location where the elongated hole and the insertion port overlap, with the gas ejection portion inserted into the insertion port. The airbag device according to claim 4 , wherein a positioning portion for positioning the first mounting protrusion is formed. A locking hole is formed at the tip of the belt.
The belt is locked to the second mounting protrusion by inserting the second mounting protrusion in the gas generator in a state where the first mounting protrusion is engaged with the positioning portion into the locking hole. The airbag device according to claim 5 . The generator body has a columnar shape.
An auxiliary belt wound around the generator body is arranged outside the bag body.
One end of the auxiliary belt is coupled to the bag body, and the other end is located in the gas generator at a position separated from the one end of the auxiliary belt in the circumferential direction of the generator body. The airbag device according to any one of claims 1 to 6 , which is locked. As the auxiliary belt, a pair of auxiliary belts connected to the bag body with one end adjacent to each other are used.
The airbag device according to claim 7 , wherein each auxiliary belt is wound around the generator body in directions opposite to each other in the circumferential direction, and is locked to the gas generator at the other end. A locking hole is formed at the other end of the auxiliary belt.
The airbag device according to claim 7 or 8 , wherein the auxiliary belt is locked to the mounting protrusion by inserting the mounting protrusion into the locking hole. A gas generator that includes a generator body that extends along the axis and has a gas ejection part at one end, and that has a mounting projection that projects from the outer surface surrounding the axis in the generator body.
An airbag device including an airbag having a bag body that expands and expands by an expansion gas supplied from the gas ejection portion, and the gas generator and the airbag are attached to a vehicle at the attachment projection.
The bag body is provided with an insertion port having a size that allows the gas ejection portion to pass through and the gas generator to pass through at a location where the mounting protrusion is provided.
The gas ejection portion is arranged inside the bag body through the insertion port, and the mounting protrusion is arranged outside the bag body.
A cover cloth is arranged outside the bag body to cover the insertion slot and at least a portion of the generator body provided with the mounting protrusion, and is coupled to the bag body.
A locking hole is formed in the cover cloth.
The gas ejection portion of said gas generator disposed in the interior of the bag body through the insertion opening, said bag said mounting projections arranged outside the body of the locking holes into the insertion which do Rue airbag device .. An insertion assisting tool that assists the insertion of the gas ejection portion into the insertion port by deforming at least the peripheral portion of the bag body so as to move away from the cover cloth toward the inside of the bag body. The airbag device according to claim 10 , further comprising. The insertion assisting tool includes a tubular portion and a plate-shaped portion, and is arranged inside the bag body.
The tubular portion is arranged at a position adjacent to the insertion port and covers at least the gas ejection portion of the generator body.
The plate-shaped portion is formed from the peripheral edge portion of the tubular portion on the side of the tubular portion that is distant from the cover cloth in the radial direction, and the gas ejection portion that sandwiches the insertion port in the direction along the axis. The airbag device according to claim 11 , which extends to the opposite side of the bag and is held in the bag body. An inner cloth is arranged inside the bag body and is connected to the bag body.
An inner insertion port is formed in the inner cloth at a position facing the insertion port so as to communicate with the insertion port.
The airbag device according to claim 12 , wherein the plate-shaped portion of the insertion assisting tool is held in the bag body by being arranged between the bag body and the inner cloth. The airbag device according to claim 13 , wherein the inner insertion port is formed longer than the insertion port toward the side of the insertion assisting tool away from the tubular portion. A part of the joint portion for connecting the inner cloth to the bag body is provided at a position where the plate-shaped portion is sandwiched from both sides in the width direction of the plate-shaped portion, and extends in the length direction of the plate-shaped portion. The airbag device according to claim 13 or 14 , further comprising a pair of guide joints for guiding the insertion of the plate-shaped portion between the bag body and the inner cloth. The insertion assisting tool is provided at an end portion of the plate-shaped portion opposite to the tubular portion, and includes a regulating portion exposed from between the bag body and the inner cloth.
The air according to any one of claims 13 to 15 , wherein the regulating portion regulates the movement of the plate-shaped portion toward the tubular portion by abutting on the edge of the inner cloth. Bag device. The airbag is seated on the vehicle seat by deploying and expanding between the side wall portion and the vehicle seat when an impact is applied to the side wall portion of the vehicle from the side. The airbag device according to any one of claims 1 to 16 , which protects an occupant from an impact.