Abstract: The present invention provides a method for measuring connection strength of a measuring object in which a first measurement member and a second measurement member are connected, the measuring object being an object in which the first measurement member in the form of a cylindrical member or a cup member, and the second measurement member in the form of a cylindrical member or a cup member, are connected at respective openings thereof, the method including: fixing, as step 1, the first measurement member by enclosing a circumferential wall thereof from the outer circumferential wall thereof, and axially supporting but to fixing an annular end surface of an opening of the second measurement member; holding in midair, as step 2, the first measurement member fixed in step 1; and pulling away, as step 3, the first measurement member until connection portions of the first measurement member and the second measurement member are separated.

Abstract: A rolling-swaging tool for closing an opening of a cylindrical housing includes: a support shaft connected to a driving body; rotating shafts extending in directions orthogonal to the support shaft; and swaging portions, each of which being attached to each of the rotating shafts. The swaging portions have, an annular first swaging portion having a minimum thickness and a maximum outer diameter, a disk third swaging portion having a maximum thickness and a minimum outer diameter, and an annular second swaging portion having a thickness between the minimum thickness and the maximum thickness and an outer diameter between the maximum outer diameter and the minimum outer diameter. The tool also has a first annular inclined surface provided between the annular first swaging portion and the annular second swaging portion, and a second annular inclined surface provided between the annular second swaging portion and the disk third swaging portion.

Abstract: The present invention provides a closing structure which closes, with an igniter, an opening of a cylindrical housing used in a gas generator, the cylindrical housing provided with a stepped surface formed on an inner side of a circumferential wall on the side of the opening, and a distal end circumferential wall extending from the stepped surface to the opening, the igniter having an igniter main body, and an igniter collar surrounding part of the igniter main body and having an annular plate portion with a maximum outer diameter and a circumferential wall excluding the annular plate portion, the annular plate portion including, a first annular surface facing the ignition portion of the igniter main body, a second annular surface facing the electroconductive pin of the igniter main body, and an annular circumferential surface between the first annular surface and the second annular surface, a first annular circumferential edge at the boundary between the first annular surface and the annular circumferential

Abstract: The present invention provides a method for measuring connection strength of a measuring object in which a first measurement member and a second measurement member are connected, the measuring object being an object in which the first measurement member in the form of a cylindrical member or a cup member, and the second measurement member in the form of a cylindrical member or a cup member, are connected at respective openings thereof, the method including: fixing, as step 1, the first measurement member by enclosing a circumferential wall thereof from the outer circumferential wall thereof, and axially supporting but to fixing an annular end surface of an opening of the second measurement member; holding in midair, as step 2, the first measurement member fixed in step 1; and pulling away, as step 3, the first measurement member until connection portions of the first measurement member and the second measurement member are separated.

Abstract: The present invention provides a closing structure which closes, with an igniter, an opening of a cylindrical housing used in a gas generator, the cylindrical housing provided with a stepped surface formed on an inner side of a circumferential wall on the side of the opening, and a distal end circumferential wall extending from the stepped surface to the opening, the igniter having an igniter main body, and an igniter collar surrounding part of the igniter main body and having an annular plate portion with a maximum outer diameter and a circumferential wall excluding the annular plate portion, the annular plate portion including, a first annular surface facing the ignition portion of the igniter main body, a second annular surface facing the electroconductive pin of the igniter main body, and an annular circumferential surface between the first annular surface and the second annular surface, a first annular circumferential edge at the boundary between the first annular surface and the annular circumferential

Abstract: The present invention provides a rolling-swaging tool or rolling-crimping tool and a method for closing an opening of a cylindrical housing of a gas generator with an igniter by using the rolling-swaging tool or rolling-crimping tool, the rolling-swaging tool or rolling-crimping tool, including: a support shaft connected to a driving body; a plurality of rotating shafts extending in directions orthogonal to the support shaft; and substantially disk-shaped swaging portions, each of which being attached to each of the rotating shafts, the swaging portions having, an annular first swaging portion which has a minimum thickness and a maximum outer diameter, a disk third swaging portion which has a maximum thickness and a minimum outer diameter, and an annular second swaging portion which has a thickness between the minimum thickness and the maximum thickness and an outer diameter between the maximum outer diameter and the minimum outer diameter, a first annular inclined surface being provided at a boundary b

Abstract: A gas generator includes: a pressurized gas chamber formed by a cylindrical pressurized gas chamber housing filled with a pressurized gas; a combustion chamber connected to a first end portion of the pressurized gas chamber and including an ignition device and a gas generating agent therein, a diffuser portion connected to a second end portion of the pressurized gas chamber and provided with a gas discharge port; a first rupturable plate blocking a first communication passage between the pressurized gas chamber and the combustion chamber; a second rupturable plate blocking a second communication passage between the pressurized gas chamber and the diffuser portion; and a filter disposed and positioned in the pressurized gas chamber to cover the second rupturable plate, allowing, during actuation, the combustion gas from the combustion chamber and the pressurized gas to pass therethrough and be discharged therefrom in response to rupturing the second rupturable plate.

Abstract: A gas generator includes: a pressurized gas chamber formed by a cylindrical pressurized gas chamber housing filled with a pressurized gas; a combustion chamber connected to a first end portion of the pressurized gas chamber and including an ignition device and a gas generating agent therein, a diffuser portion connected to a second end portion of the pressurized gas chamber and provided with a gas discharge port; a first rupturable plate blocking a first communication passage between the pressurized gas chamber and the combustion chamber; a second rupturable plate blocking a second communication passage between the pressurized gas chamber and the diffuser portion; and a filter disposed and positioned in the pressurized gas chamber to cover the second rupturable plate, allowing, during actuation, the combustion gas from the combustion chamber and the pressurized gas to pass therethrough and be discharged therefrom in response to rupturing the second rupturable plate.

Abstract: An inflator for an air bag, includes, a tubular housing including a gas discharge portion, a first fixing member provided in an outer circumferential surface of the tubular housing for fixing the inflator to a vehicle, the first fixing member including a contacting surface fixed to the outer circumferential surface, and a non-contacting surface extending in a direction tangential to the outer circumferential surface from one end of the first fixing member without contacting the outer circumferential surface. The first fixing member has a rib that extends from the contacting surface to the non-contacting surface.

Abstract: Stud bolts 51, 52 are fixed by welding to the side faces of a first closure 30 and a second closure 40, which are connected to a cylindrical housing 20. When connecting a gas introduction port of the air bag to a diffuser portion 43, the stud bolts 51, 52 do not cause an obstruction, and hence the attachability of an inflator 10 to a module case using the stud bolts 51, 52 is not impaired.

Abstract: In the airbag device of the present invention, a cylinder-shaped inflator includes a discharge side end portion having a plurality of gas discharge ports. The discharge side end is connected with the airbag utilizing a clamp by being inserted into a tubular gas inlet port of the airbag. Each of gas discharge ports includes a circumferential opening and an end face opening. The end face opening emits inflation gas in an axial direction of the inflator when the inflator is connected with the gas inlet port. Between each of the circumferential openings is a supporting plane for supporting an inner surface of the gas inlet port. The discharge side end includes a guide portion for redirecting inflation gas flowing from inside to directions perpendicular to the axis of the inflator when the gas inlet port is not connected with the inflator, such that inflation gas is discharged from the circumferential openings of the gas discharge ports.

Abstract: An inflator, includes: an inflator housing which has an opening portion and charged with a pressurized gas; a diffuser portion provided in an opening portion side of the inflator housing and having a gas discharging port for discharging outside a pressurized gas flowing from the opening portion at activation; a first rupturable plate closing a pressurized gas flow path between the inflator housing and the diffuser portion; and a filter disposed between the first rupturable plate and the gas discharging port, the filter including one of a flat plate with a plurality of holes or a wire mesh and a surface of the filter in a first rupturable plate side having a concave portion and a convex portion.

Abstract: The present invention provides a gas generator for an air bag that can be reduced in size and thickness. A gas outlet is formed in the axial direction of the gas generator in a diffuser which is attached to an open end portion of a bottle portion storing a pressurized medium. The gas outlet is closed by a rupturable plate, and an igniter collar attached with an igniter for rupturing the rupturable plate is attached to the diffuser. A first gas discharge hole that opens in the axial direction of a housing is also formed in the igniter collar, and hence no member protrudes in the width direction of the gas generator, enabling the entire gas generator to be reduced in size and thickness.

Abstract: The present invention provides an inflator which is easily connected to an air bag. Stud bolts 51, 52 are fixed by welding to the side faces of a first closure 30 and a second closure 40, which are connected to a cylindrical housing 20. When connecting a gas introduction port of the air bag to a diffuser portion 43, the stud bolts 51, 52 do not cause an obstruction, and hence the attachability of an inflator 10 to a module case using the stud bolts 51, 52 is not impaired.

Abstract: In the airbag device of the present invention, a cylinder-shaped inflator includes a discharge side end portion having a plurality of gas discharge ports. The discharge side end is connected with the airbag utilizing a clamp by being inserted into a tubular gas inlet port of the airbag. Each of gas discharge ports includes a circumferential opening and an end face opening. The end face opening emits inflation gas in an axial direction of the inflator when the inflator is connected with the gas inlet port. Between each of the circumferential openings is a supporting plane for supporting an inner surface of the gas inlet port. The discharge side end includes a guide portion for redirecting inflation gas flowing from inside to directions perpendicular to the axis of the inflator when the gas inlet port is not connected with the inflator, such that inflation gas is discharged from the circumferential openings of the gas discharge ports.

Abstract: An inflator, in which a mounting work to a vehicle is improved, is provided. One or more first fixing members 21 which is a mounting means to a vehicle are fixed by welding to a circumferential surface of the housing 11 of an inflator 10. As to the first fixing member 21, part of a surface 25 is fixed along the circumferential surface of the tubular housing 11, the remaining surface 26 is radially extended, not contacting with the circumferential surface of the tubular housing 11, and the radial length a1 of the remaining surface is 0.5 to 1.5 times the diameter 2r of the housing 11.

Abstract: The present invention provides an inflator in which a flow amount of a pressurized gas can be kept almost constant.

Abstract: A gas generator for an airbag has a reduced number of components and in which an automatic ignition material can ignite at an appropriate time. This gas generator includes a housing, an ignition unit accommodating chamber in the housing, an ignition unit installed in the ignition unit accommodating chamber, a gas generating material, and a cooling and purifying unit. The ignition unit includes a transfer charge container and an igniter. The transfer charge container has a cup containing a transfer charge and a cover hermetically sealing the cup. The igniter is activated by a signal to ignite the transfer charge, and a generated gas is introduced into an airbag to protect an occupant against an impact. The transfer charge container includes a cup part and a cover part, either the bottom of the cup part or the cover part are outwardly curved to form an outwardly convex surface. The container is resiliently held between a top wall portion of the ignition unit accommodating chamber and the igniter.

Abstract: A gas generator for an airbag is provided which has a reduced number of components and in which an automatic ignition material can ignite at an appropriate time.

Abstract: An air bag device includes a folded air bag, an inflator for supplying air to the air bag to inflate the bag, and a bag holder for holding the air bag and the inflator. Protrusions are formed on the outer surface of the inflator. The bag holder has a bottom wall with an insertion hole. The inflator is inserted into the insertion hole from the lower side of the bag holder. Pawls are upwardly extended from the circumferential edges of the insertion hole in the inward direction. The inflator is held by the bag holder in a state that the pawls retain the lower surface of the protrusions.