A device for activating a passenger protection unit for a vehicle. The device includes a fuel element chamber having at least one fuel element, which is designed to generate a hot gas for activating the passenger protection unit by combustion, the fuel element chamber having an outlet opening for releasing the hot gas into the passenger protection unit, and the pressure container being designed to store a pressurized cold gas, the pressure container having at least one opening for the controlled release of the cold gas into the fuel element chamber.

A device for activating a passenger protection unit for a vehicle. The device includes a fuel element chamber having at least one fuel element, which is designed to generate a hot gas for activating the passenger protection unit by combustion, the fuel element chamber having an outlet opening for releasing the hot gas into the passenger protection unit, and the pressure container being designed to store a pressurized cold gas, the pressure container having at least one opening for the controlled release of the cold gas into the fuel element chamber.

The present invention provides a support structure of a closing member for a gas generator, being arranged in the gas generator which includes a cylindrical housing provided with a gas discharge port, accommodating therein an ignition device and having an inflating gas source chamber filled with an inflating gas source, the support structure including a combination of a closing member for closing a gas discharge path and a support member of the closing member to be arranged inside the cylindrical housing, the support member including a base, and a convex first support part, which extends in one direction from a center portion of the base, and further including a gas passage hole in at least one of the base and the convex first support part, the closing member having a plate shape with a first surface and a second surface, the closing member being supported from one surface by a distal end surface of the convex first support part, which abuts against a center portion of the first surface or the second surface, and the closing member, which has an annular surface not abutted by the convex first support part, the closing member being opened as the annular surface of the closing member is ruptured.

The present invention provides a support structure of a closing member for a gas generator, being arranged in the gas generator which includes a cylindrical housing provided with a gas discharge port, accommodating therein an ignition device and having an inflating gas source chamber filled with an inflating gas source, the support structure including a combination of a closing member for closing a gas discharge path and a support member of the closing member to be arranged inside the cylindrical housing, the support member including a base, and a convex first support part, which extends in one direction from a center portion of the base, and further including a gas passage hole in at least one of the base and the convex first support part, the closing member having a plate shape with a first surface and a second surface, the closing member being supported from one surface by a distal end surface of the convex first support part, which abuts against a center portion of the first surface or the second surface, and the closing member, which has an annular surface not abutted by the convex first support part, the closing member being opened as the annular surface of the closing member is ruptured.

An inflator includes a rupturable plate in a circular shape for closing an opening of a pressurized gas-filled space. The rupturable plate has a fragile portion formed by grooves in a regular polygon on one surface, including first fragile portions formed by grooves forming a circumference of the regular polygon, and second fragile portions formed by grooves extending from all apexes of the regular polygon to a center thereof creating a plurality of triangles formed by the first fragile portions as a base and the second fragile portions as the remaining two sides. The depth (h1) of the first fragile portion is less than the depth (h2) of the second fragile portion whereby, when pressure is exerted on a rear surface opposite to the fragile portions, the second fragile portions will rupture as the first fragile portions bend.

An inflator includes a rupturable plate in a circular shape for closing an opening of a pressurized gas-filled space. The rupturable plate has a fragile portion formed by grooves in a regular polygon on one surface, including first fragile portions formed by grooves forming a circumference of the regular polygon, and second fragile portions formed by grooves extending from all apexes of the regular polygon to a center thereof creating a plurality of triangles formed by the first fragile portions as a base and the second fragile portions as the remaining two sides. The depth (h1) of the first fragile portion is less than the depth (h2) of the second fragile portion whereby, when pressure is exerted on a rear surface opposite to the fragile portions, the second fragile portions will rupture as the first fragile portions bend.

The present invention relates to an inflator mounted on protective equipment, comprising: a main body (100) having a cylindrical structure that is open at the top and bottom thereof, wherein the main body (100) has a key-ball insertion hole (110) and a gas supply hole (120) that are formed on portions of a lateral side thereof, and a bomb (600) for storing compressed air is coupled to the lower side of the main body (100); an eccentric lever (200) that is rotatably coupled to the upper opening of the main body (100) through a rotation shaft (230) and includes a lever (210) that adjusts a downward pressure by rotating an eccentric drum part (220) having the shape of a circular plate; a perforation part (300) that provides a restoring force downward according to the pressure state of the eccentric lever (200) and perforates the bomb (600) to allow the gas in the bomb (600) to be supplied to a user's protective equipment through the gas supply hole (120); and a key-ball (400) that confines the movement of the perforation part (300) while being inserted into the key-ball insertion hole (110) and separates from the key-ball insertion hole (110) according to the state of the outside to operate the perforation part (300).

The invention relates to a hybrid inflator (10) including a burst cap (20) including a bottom (21) and a sleeve-like side wall (22), the bottom (21) and the side wall (22) delimiting an igniter compartment (23), and the burst cap (20) in the idle mode being pressurized on the outer peripheral side with compressed gas having a filling pressure (PF) which at a functional maximum temperature of the hybrid inflator (10) has a maximum filling pressure (PFmax), and wherein the burst cap (20) can be destroyed by an igniter compartment side bursting pressure in the case of operation. In accordance with the invention, a transitional portion (24) is formed from the side wall (22) of the burst cap (20) to the bottom (21) so that the igniter compartment side bursting pressure required to destroy the burst cap (20) is lower than the sum of the maximum filling pressure (PFmax) and the filling pressure (PF). The invention further relates to a burst cap, an airbag module, a vehicle safety system as well as a method of manufacturing a burst cap.

The invention relates to a hybrid inflator (10) including a burst cap (20) including a bottom (21) and a sleeve-like side wall (22), the bottom (21) and the side wall (22) delimiting an igniter compartment (23), and the burst cap (20) in the idle mode being pressurized on the outer peripheral side with compressed gas having a filling pressure (PF) which at a functional maximum temperature of the hybrid inflator (10) has a maximum filling pressure (PFmax), and wherein the burst cap (20) can be destroyed by an igniter compartment side bursting pressure in the case of operation. In accordance with the invention, a transitional portion (24) is formed from the side wall (22) of the burst cap (20) to the bottom (21) so that the igniter compartment side bursting pressure required to destroy the burst cap (20) is lower than the sum of the maximum filling pressure (PFmax) and the filling pressure (PF). The invention further relates to a burst cap, an airbag module, a vehicle safety system as well as a method of manufacturing a burst cap.

The present invention provides a gas generator including, an ignition device chamber, a gas inflow chamber, and a pressurized gas chamber being arranged from a first end fixed with an ignition device to a second end opposite thereto in a cylindrical housing, an inner circumferential wall surface of the cylindrical housing, from the ignition device chamber to the gas inflow chamber, having a first movement restricting portion, a second movement restricting portion and a stopping portion which are arranged in an axial direction at intervals in the above order so as to protrude, the second movement restricting portion having an ignition device chamber-side surface which is an inclined surface decreasing an inner diameter of the housing from the side of the ignition device chamber to the side of the gas inflow chamber and a gas inflow chamber-side surface whose angle (α1) with respect to the cylindrical housing is not more than 90 degrees, so that an axial cross-sectional shape of the second movement restricting portion is a triangle, a breaking device being arranged between the ignition device chamber and the gas inflow chamber and including a base whose outer circumferential surface abuts against an inner circumferential wall surface of the cylindrical housing and a distal end having an enlarged-diameter portion, and before actuation, the base being held between the first movement restricting portion and the second movement restricting portion, after actuation, the base being held between the surface of the second movement restricting portion whose angle al is not more than 90 degrees and the stopping portion.