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 housing and a diffuser connected to the housing. The diffuser has a cup-like shape and includes an opening portion joined to the housing and a circumferential wall portion provided with gas discharge ports. A partition plate is attached to the opening between the housing and the diffuser for closing the opening. The diffuser has first and second tubular space portions therein communicating with each other, the first tubular space portion facing the partition plate, and the second tubular space portion communicating with the gas discharge ports. A step is formed between the first and second tubular space portions such that the inner diameter of the first tubular space portion is larger than the inner diameter of the second tubular space portion, and a cross-sectional area of the second tubular space portion is smaller than the total opening area of the gas discharge ports.

Abstract: The present invention provides a gas generator for a restraining apparatus of a vehicle, including a combustion chamber, a tabular cushion member being disposed on a bottom portion of the combustion chamber, the solid gas generating agent as a gas generating source, being charged in the combustion chamber inside the gas generator together with the cushion member, the combustion chamber being substantially in a cup shape in which an inner diameter (D1) of an opening is smaller than an inner diameter (D2) of the bottom portion, the cushion member including a circular portion serving as a base part and a plurality of protrusions protruding from a peripheral edge of the circular portion, an outer diameter (d1) of the circular portion and the inner diameter (D1) of the opening satisfying a relationship of d1<D1, and an outer diameter (d2) including the protrusions satisfying relationships of d2>D1 and d2?D2.

Abstract: A gas generator includes a housing having a gas discharge port, a combustion chamber cup member disposed, in the housing, such that an opening portion thereof covers a bottom surface of the housing, the combustion chamber cup member having a communication hole at least a portion of its peripheral wall surface thereof, a metallic cover member covering the peripheral wall surface provided with the communication hole, and a combustion chamber being formed inside the combustion chamber cup member and accommodating a gas generating agent and an igniter therein, at the time of activation, the cover member expanding and deforming mainly in the radial direction to form a gap between the peripheral wall surface of the combustion cup member and the metallic cover member, which serves as a gas channel leading to the combustion chamber and the outside of the combustion chamber.

Abstract: A gas generator includes, a housing having a defining a first combustion chamber, an ignition chamber cup, defining an ignition chamber, and a combustion chamber cup, defining a second combustion chamber, being aligned at a distance in a radial direction, a first communication hole communicating the ignition chamber with the first combustion chamber being provided in a circumferential wall portion of the ignition chamber cup, a second communication hole communicating the second combustion chamber with the first combustion chamber being provided in a circumferential wall portion of the combustion chamber cup, a cup-shaped cover member covering the combustion chamber cup and closing the second communication hole, a disk-shaped retainer retaining a gas generating agent, being provided with a first opening for fitting the ignition chamber cup and a second opening for fitting the combustion chamber cup, an annular gap being formed between the second opening and the cover member.

Abstract: A gas generator includes a housing and a diffuser connected to the housing. The diffuser has a cup-like shape and includes an opening portion joined to the housing and a circumferential wall portion provided with gas discharge ports. A partition plate is attached to the opening between the housing and the diffuser for closing the opening. The diffuser has first and second tubular space portions therein communicating with each other, the first tubular space portion facing the partition plate, and the second tubular space portion communicating with the gas discharge ports. A step is formed between the first and second tubular space portions such that the inner diameter of the first tubular space portion is smaller than the inner diameter of the second tubular space portion, and a cross-sectional area of the second tubular space portion is smaller than the total opening area of the gas discharge ports.

Abstract: The present invention provides a gas generator including: a housing having a gas discharge port and a first combustion chamber defined in the housing charged with a first gas generating agent, an ignition chamber cup defining an ignition chamber and a second combustion chamber cup defining a second combustion chamber being aligned at a distance in the radial direction, a first communication hole for communicating with the first combustion chamber being provided in a circumferential wall portion of the ignition chamber cup, a second communication hole, for communicating with the first combustion chamber being provided in a circumferential wall portion of the second combustion chamber cup, a cup-shaped cover member covering the second combustion chamber cup and closing the second communication hole, a disk-shaped retainer for retaining the first gas generating agent, being disposed in the housing and provided with a first opening and a second opening, the disk-shaped retainer being mounted by fitting the first

Abstract: The present invention provides a gas generator for a restraining apparatus of a vehicle, including a combustion chamber, a tabular cushion member being disposed on a bottom portion of the combustion chamber, the solid gas generating agent as a gas generating source, being charged in the combustion chamber inside the gas generator together with the cushion member, the combustion chamber being substantially in a cup shape in which an inner diameter (D1) of an opening is smaller than an inner diameter (D2) of the bottom portion, the cushion member including a circular portion serving as a base part and a plurality of protrusions protruding from a peripheral edge of the circular portion, an outer diameter (d1) of the circular portion and the inner diameter (D1) of the opening satisfying a relationship of d1<D1, and an outer diameter (d2) including the protrusions satisfying relationships of d2>D1 and d2?D2.

Abstract: A gas generator includes, a housing defining a first combustion chamber and accommodating an enhancer chamber cup member, defining an enhancer chamber, and a combustion chamber cup member provided outside the enhancer chamber cup member and defining a second combustion chamber. The enhancer cup member accommodates a first gas generating agent ignited by a first ignition device, and has an enhancer hole for communicating the enhancer chamber with the first combustion chamber during activation. The combustion chamber cup member accommodates a second gas generating agent ignited by a second ignition device, and has a through-hole for communicating the second combustion chamber with the first combustion chamber during activation. A top plate of the enhancer chamber cup member is positioned higher than a top plate of the combustion chamber cup member, and the enhancer hole is positioned higher than the top plate of the combustion chamber cup member.

Abstract: The present invention provides a hybrid inflator including: a pressurized gas and a solid gas generating agent that generates a combustion gas as a gas source, the solid gas generating agent including at least an oxidizing agent and a binder, the pressurized gas including 15 mol % or more of oxygen.

Abstract: The present invention provides a gas generator, including, a housing having a gas discharge port, a combustion chamber cup member disposed, in the housing, such that an opening portion thereof covers a bottom surface of the housing, the combustion chamber cup member having a communication hole at least a portion of its peripheral wall surface thereof, a metallic cover member covering the peripheral wall surface provided with the communication hole, and a combustion chamber being formed inside the combustion chamber cup member and accommodating a gas generating agent and an igniter therein, at the time of activation, the cover member expanding and deforming mainly in the radial direction to form a gap between the peripheral wall surface of the combustion cup member and the metallic cover member, which serves as a gas channel leading to the combustion chamber and the outside of the combustion chamber.

Abstract: A gas generator for a restraining device includes a housing formed by joining and integrating a diffuser shell having a gas discharge port and a closure shell, and a gas generating agent, an igniter, and a cylindrical filter, accommodated inside the housing. The housing has a top plate, a circumferential wall surface, and a bottom plate, and a plurality of protruding portions concaved inwardly and formed with a distance from each other on at least either of an upper annular corner portion located at a boundary portion between the top plate and the circumferential wall surface and a lower annular corner portion located at a boundary portion between the bottom plate and the circumferential wall surface. Part of the cylindrical filter is supported and fixed by the plurality of protruding portions, and a gap is provided between an outer circumferential surface of the cylindrical filter and the gas discharge hole.

Abstract: An inflator includes, a housing having a gas discharge port, an ignition device and a gas generating agent accommodated inside the housing, and a collision member for receiving collision of a combustion product(s) which is generated by the activation of the ignition device, the collision member being provided in a position directly facing an ejecting direction of the combustion products.

Abstract: An air bag inflator has a cylindrical housing defining an internal space therein and having a convex portion protruding towards the internal space, and a cup member provided inside the cylindrical housing and having a cylindrical wall, provided with a vent hole that communicates inside the cup member with a space defined by the cup member and an inner surface of the cylindrical housing, and an end wall closing a first end of the cylindrical wall. The cup member is supported inside the cylindrical housing by making contact with the convex portion. An inflator assembly method includes, forming the convex portion, providing the cup member, and inserting the cup member inside the internal space of the cylindrical housing, such that the cup member abuts the convex portion.

Abstract: The present invention provides a gas generator for a restraining device for a vehicle, including: an igniter attached via an igniter collar to an opening in a housing bottom portion; the igniter collar including a main body portion that supports the igniter and an attachment portion that is fixed to the housing bottom portion; at least part of the attachment portion absorbing strains caused by deformation of the housing, sealing between the housing and the igniter collar, by deforming itself correspondingly to deformation of the housing when the housing deforms during the actuation.