Abstract: A gas generator for a restraining device includes: a housing formed by a diffuser shell having a gas discharge port and a closure shell, an ignition device chamber in which an ignition device is accommodated, and a combustion chamber in which a gas generating agent is accommodated, being defined inside the housing, the ignition device chamber being defined inside an inner tube disposed in the housing, and the combustion chamber being defined outside the inner tube, the inner tube including, openings on both ends being fixed to a bottom surface and a top surface of the housing, a flame-transferring hole being formed in a circumferential wall portion to communicate the ignition device chamber with the combustion chamber, and a reduced strength portion being provided in the circumferential wall portion between the flame-transferring hole and the top surface of the housing.

Abstract: A gas generator includes, a tubular housing including, on a circumferential surface thereof, first and second gas discharge port groups, the second gas discharge port group being separated axially from the first gas discharge port group, both being closed by a seal member, a first closing member having an ignition device and a second closing member, closing one end and the other end of the tubular housing, respectively, opening pressures P1 and P2 for opening the first and second gas discharge port groups, satisfying a relationship P1<P2, the first gas discharge port group being positioned at a center portion in the axial direction of the tubular housing or in the vicinity thereof, and the second gas discharge port group being positioned at a center portion between the first gas discharge port group and the second closing member or in the vicinity thereof, respectively.

Abstract: The present application provides a gas generator including: a cylindrical housing with a gas discharge port, one end of the tubular housing being closed by a closing member including a disk-shaped main body portion, an annular projection portion and the peripheral surface of the annular projection portion, a transfer charge chamber housing defining a transfer charge chamber charged with a transfer charge and being attached to the closing member, the transfer charge chamber housing having a cup-like shape including a flame-transferring hole at a bottom surface, a flange portion and a annular wall surface extending in the axial direction of the housing from the flange portion, being mounted such that the annular wall surface thereof is fitted into an annular groove, and being fixed by the flange portion pressed in the axial direction by a supporting member and a sealing member disposed in a remaining space of the annular groove and sealing between the tubular housing and the closing member.

Abstract: The present invention provides a gas generator for a restraining device, including: a housing formed by a diffuser shell having a gas discharge port and a closure shell, an ignition device chamber in which an ignition device is accommodated, and a combustion chamber in which a gas generating agent is accommodated, being defined inside the housing, the ignition device chamber being defined inside an inner tube disposed in the housing, and the combustion chamber being defined outside the inner tube, the inner tube including, openings on both ends being fixed to a bottom surface and a top surface of the housing, a flame-transferring hole being formed in a circumferential wall portion to communicate the ignition device chamber with the combustion chamber, and a reduced strength portion being provided in the circumferential wall portion between the flame-transferring hole and the top surface of the housing.

Abstract: The present invention provides a gas generator including, a tubular housing including, on a circumferential surface thereof, at least two gas discharge port groups having a first gas discharge port group and a second gas discharge port group, the second being separated axially from the first gas discharge port group, both being closed by a seal member, a first closing member having an ignition device and a second closing member, closing one end and the other end of the tubular housing, respectively, opening pressures P1 and P2 for opening the first and second gas discharge port groups, satisfying a relationship P1<P2, the first gas discharge port group being positioned at a center portion in the axial direction of the tubular housing or in the vicinity thereof, and the second gas discharge port group being positioned at a center portion between the first gas discharge port group and the second closing member or in the vicinity thereof, respectively.

Abstract: The present application provides a gas generator including: a cylindrical housing with a gas discharge port, one end of the tubular housing being closed by a closing member including a disk-shaped main body portion, an annular projection portion and the peripheral surface of the annular projection portion, a transfer charge chamber housing defining a transfer charge chamber charged with a transfer charge and being attached to the closing member, the transfer charge chamber housing having a cup-like shape including a flame-transferring hole at a bottom surface, a flange portion and a annular wall surface extending in the axial direction of the housing from the flange portion, being mounted such that the annular wall surface thereof is fitted into an annular groove, and being fixed by the flange portion pressed in the axial direction by a supporting member and a sealing member disposed in a remaining space of the annular groove and sealing between the tubular housing and the closing member.

Abstract: A gas generator includes, a cylindrical housing having a port and closed at both ends, an ignition device attached to one end of the housing, a first chamber provided in the housing at a position close to the ignition device and filled with a first agent, a cylindrical filter provided in a space adjacent to the first chamber, a second chamber provided inside the filter and filled with a second agent, and a retainer disposed between the first and second chambers, the retainer having an annular flat surface and an annular circumferential wall surface that protrudes from an inner circumferential edge of the annular flat surface, the annular flat surface abutting one end of the filter and the annular circumferential wall surface abutting a portion of an inner circumferential surface of the filter, an inner diameter of the second chamber being smaller than that of the first chamber.

Abstract: An actuator includes an ignition device having an igniter main body fixed to an igniter collar and a cylinder connected to the igniter collar. The cylinder has a first sliding chamber located in a position facing the ignition device and a second sliding chamber formed in a direction perpendicular to the first sliding chamber. A first piston is disposed inside the first sliding chamber, one end surface of the first piston having a first inclined surface inclined in one direction, and the other end surface opposing the ignition device, and a second piston is disposed inside the second sliding chamber. A circumferential surface of the second piston is provided with a recess formed with a second inclined surface inclining in the central axis direction, and the second piston is provided such that the first inclined surface abuts against the second inclined surface.

Abstract: A gas generator, relating to a gas generator for a side air bag or the like, is provided. The gas generator has an inner cylindrical member is stored in a housing, wherein the inner cylindrical member has a second outside diameter portion abutting against the inner peripheral surface of the housing, and a first outside diameter portion smaller in outside diameter than the second outside diameter portion, the tip end of the first outside diameter portion side abuts against the closed end portion (one end portion) of the housing, the filter is provided on the outside of the inner cylindrical member in the radial direction of the first outside diameter portion, and the ignition means is provided on the opposite end portion (the other end) from the closed end portion of the housing.

Abstract: An actuator includes; a cylinder connected to an ignition device; a piston slidably accommodated inside the cylinder, the piston having, in a desired section in the length direction, an enlarged diameter portion in which an outer diameter is enlarged; and a cylindrical stopper attached to an inner peripheral surface of the cylinder. The stopper includes, a main body portion fixed to the inner peripheral surface of the cylinder, and a nail portion which inwardly projects from the main body portion and is formed of an elastic material, wherein before activation of the ignition device, the piston is inhibited from moving in an axial direction by causing the nail portion to contact a part of the enlarged diameter portion, and after activation of the ignition device, the piston is inhibited from moving in a backward direction by causing the nail portion to contact another part of the enlarged diameter portion.

Abstract: A gas generator that can prevent erroneous operation in which the combustion of a gas generating agent inside one combustion chamber is caused by the combustion of a gas generating agent in the other combustion chamber. Two combustion chambers 30, 50 are separated by a partition wall 35. The partition wall 35 is fixed by discontinuous protrusions 61, 62 formed in a housing 11. Air tightness between two combustion chambers 30, 50 is ensured by two retainers 80, 90.

Abstract: The present invention relates to a gas generator including: a cylindrical housing having a gas discharge port and being closed at both ends, an ignition device attached to one end of the cylindrical housing, a first gas generating agent chamber provided in the cylindrical housing at a position close to the ignition device and filled with a first gas generating agent, a cylindrical filter provided in a space axially adjacent to the first gas generating agent chamber, a second gas generating agent chamber provided inside the cylindrical filter and filled with a second gas generating agent, and a retainer disposed between the first gas generating agent chamber and the second gas generating agent chamber, the retainer having an annular flat surface and a annular circumferential wall surface that protrudes from an inner circumferential edge of the annular flat surface, the annular flat surface abutting against one end surface of the cylindrical filter and the annular circumferential wall surface abutting agains

Abstract: A gas generator for an airbag allows maintaining combustibility as originally designed. An ignition energy generated by an activation of a first igniter 21 flows via a first communication hole 24, a first intermediate chamber 30 and second communication holes 43, into a second combustion chamber 40, to cause a gas generating agent 43 to ignite and burn. The ignition energy flows into the second combustion chamber 40 with making a detour, and therefore, the gas generating agent prevents from broken by the impact and the combustibility thereof is never changed.

Abstract: A gas generator, relating to a gas generator for a side air bag or the like, is provided. The gas generator has an inner cylindrical member is stored in a housing, wherein the inner cylindrical member has a second outside diameter portion abutting against the inner peripheral surface of the housing, and a first outside diameter portion smaller in outside diameter than the second outside diameter portion, the tip end of the first outside diameter portion side abuts against the closed end portion (one end portion) of the housing, the filter is provided on the outside of the inner cylindrical member in the radial direction of the first outside diameter portion, and the ignition means is provided on the opposite end portion (the other end) from the closed end portion of the housing.

Abstract: The present invention provides an actuator including: a cylinder connected to an ignition device; a piston slidably accommodated inside the cylinder, the piston having, in a desired section in the length direction, an enlarged diameter portion in which an outer diameter is enlarged; a cylindrical stopper attached to an inner peripheral surface of the cylinder, the stopper including, a main body portion which is fixed to the inner peripheral surface of the cylinder, and a nail portion which inwardly projects from the main body portion and is formed of an elastic material, wherein before activation of the ignition device, the piston is inhibited from moving in an axial direction by causing the nail portion to contact a part of the enlarged diameter portion, after activation of the ignition device, the piston is inhibited from moving in a backward direction by causing the nail portion to contact another part of the enlarged diameter portion.

Abstract: A dual-type gas generator for inflating air bags is provided in which a first igniter structure having a first combustion chamber accommodating a first gas generating material and a second igniter structure having a second combustion chamber accommodating a second gas generating material both exhaust, when activated, to exhaust gas to a common filter chamber. When the igniter structures are intended to be activated separately and with a time lag, gas generated in the first chamber often flows into the second chamber and may ignite the second gas generating material. This malfunction can be prevented by various flame-transferring preventing structures that preclude direct flow of gas from the first chamber into the second chamber through the common filter chamber.

Abstract: A gas generator, relating to a gas generator for a side air bag or the like, is provided. The gas generator has an inner cylindrical member stored in a housing, wherein the inner cylindrical member has a second outside diameter portion abutting against the inner peripheral surface of the housing, and a first outside diameter portion smaller in outside diameter than the second outside diameter portion, the tip end of the first outside diameter portion side abuts against the closed end portion (one end portion) of the housing, the filter is provided on the outside of the inner cylindrical member in the radial direction of the first outside diameter portion, and the ignition means is provided on the opposite end portion (the other end) from the closed end portion of the housing.

Abstract: The present invention provides a gas generator including an igniter, a gas-generating agent and a coolant/filter in a housing, a positioning portion for the coolant/filter, which is formed in advance into a convex shape on the inward side of the housing and that is provided at least in either of the top surface or the bottom surface of the housing, the coolant/filter being positioned by the positioning portion.

Abstract: The present invention provides an actuator including: an ignition device having an igniter main body fixed to an igniter collar, a cylinder connected to the igniter collar, the cylinder having a first sliding chamber located in a position facing the ignition device and a second sliding chamber formed in a direction perpendicular to the first sliding chamber, a first piston being disposed inside the first sliding chamber, one end surface of the first piston having a first inclined surface inclined in one direction, and the other end surface being opposite to the ignition device, and a second piston being disposed inside the second sliding chamber, a circumferential surface of the second piston being provided with a recess formed with a second inclined surface inclining in the central axis direction, the second piston being provided such that the first inclined surface abuts against the second inclined surface.

Abstract: The present invention provides an actuator including: a housing having an igniter housing and a cylinder, an igniter accommodated inside the igniter housing and a piston provided inside the cylinder to be slidable, the piston having a rod and an enlarged surface portion formed on one end surface or an outer peripheral surface of the rod, and part of the piston, which includes the other end of the rod, protruding outside the housing before activation, the igniter disposed such that the central axis direction of the igniter and the central axis direction of the rod of the piston are different from each other, wherein, during the activation of the igniter, the piston slides inside the cylinder by pushing the enlarged surface portion by a combustion product generated due to activation of the igniter, and the protruding portion of the piston is retracted inside the housing due to the sliding of the piston.