10results about "Pyrotechnical actuators" patented technology

Provided is a locking tool capable of reducing the size or the number of parts as compared with the related art. A locking tool 100 includes a cylindrical member 10, an igniter 20 including a portion fitted into the cylindrical member 10, and a holder 30 that holds the cylindrical member 10 and the igniter 20 and is fixed to a part of a bag holder 40. The cylindrical member 10 is a bottomed cylindrical member including an opening portion provided at an end portion on a side of the igniter 20, and is a component in which a bottom portion 11, a cylindrical portion 12, a flange portion 13, and an actuation pin 14 are integrally molded. The bottom portion 11 is provided with a weak portion 11a that is an annular recess at a position facing an outer peripheral portion 14a of the actuation pin 14 described later on an inner surface. The weak portion 11a is broken by a pressure wave received at the time of activation of the igniter 20.

The present invention provides an ignition device comprising an igniter fixed to an igniter collar, a first cup element filled with a gas-generating component, and a second cup element. The first cup element covers the detonator collar, so that a section is enclosed which contains a detonator section of the detonator. The second cup element covers the detonator collar, thus enclosing the first cup element. A gap is formed between an outer surface of the first cup element and an inner surface of the second cup element to function as a heat insulation layer. The first cup element has a first opening device, and the second cup element has a second opening device, and at least one of the first opening device and the second opening device is closed before activation and is open only when the gas is generated by the gas generating component.

The invention relates to a drive arrangement for a flap (2) of a motor vehicle (3), wherein a first drive train (4) has a first drive (5) for generating a first drive movement between a flap-side drive connection (7) and a body-side drive connection (8), wherein in a normal state the first drive movement causes the flap (2) to open from a closed position to an open position, wherein the flap-side drive connection (7) is part of a first coupling device (12) of the first drive train (4) and the body-side drive connection (8) is part of a second coupling device (13) of the first drive train (4), wherein the flap (2) is also adjustable from the closed position to a collision position.It is proposed that the first and / or second coupling device (12, 13) is each designed as a ball groove joint (17) with an elongated joint socket (18) and a joint head (19) mounted therein that is linearly displaceable and rotatable, and that when the flap (2) is moved from the closed position to the collision position, the first drive train (4) is moved from its normal state to an avoidance state in which the joint head (19) is displaced relative to the elongated joint socket (18) compared to the normal state in which the joint head (19) is in a normal position relative to the elongated joint socket (18).

In particular, it provides a tensioning device that can be more easily adapted to different requirements. [Solution] The present invention provides a tensioning device for a safety belt component, comprising a gas generator (1) for generating pressurized gas, a piston (2) that can be driven by the pressurized gas, a tensioning cable (3) connected to the piston (2) and that can be connected to a safety belt component (4) to cause a tightening movement, a tightening tube (5) for receiving and guiding the piston (2), and a receptacle (6) that houses the gas generator (1).

An actuator includes a housing having an inner surface, a proximal end, and a distal end. A gas generator is coupled to the proximal end of the housing. The actuator also includes a piston rod slidably engaged with the inner surface of the housing, the piston rod having a proximal end and a distal end opposite the proximal end. A piston head is coupled to the proximal end of the piston rod and a seal is disposed between the piston rod and the piston head. The piston head is movable relative to the piston rod from a first position prior to deployment of the gas generator to a second position after deployment of the gas generator, wherein movement of the piston head from the first position to the second position compresses the seal.

Pyrotechnic actuator (1) comprising a tubular housing (2) having a pyrotechnic detonator (21) at one end, and further comprising a piston with piston tip (4a) and piston rod (4), wherein the piston tip (4a) is displaceable in the housing (2) by the detonator (21) from an initial position adjacent to the detonator (21) to an end position distant from the detonator (21), and wherein a one-piece sealing element (5) is provided at the end of the housing (2) facing away from the detonator (21) between the piston rod (4) and the housing (2), wherein the piston rod (4) passes through the sealing element (5) and has a step (14) in the region of the sealing element (5), wherein the outer diameter (13) of the piston rod (4) on the side of the step (14) facing away from the detonator (21) is smaller than the outer diameter (12) on the side facing the detonator (21). (21) side facing the step (14), characterized in that the sealing element (5) has a corresponding opposing step (27),so that the sealing element (5) sits on the step (14) of the piston rod (4).

The invention relates to a pyrotechnic actuator (1) comprising a cylindrical housing (2), on a first axial end section of which a connecting device (6) for connecting to a component is provided and in a second axial end section of which an ignition unit (14) is accommodated, the pyrotechnic actuator comprises a piston (4) which is guided in an axially displaceable manner in a housing (2), the axial movement of which in the housing (2) can be triggered by igniting a propellant (20) by means of an ignition unit (14) in order to actuate the actuator (1) in such a way that the propellant (20) can be ignited by the ignition unit (14). According to the invention, the housing (2) has, in the region of the second axial end section, a circumferential projection (30) which projects radially outward and which forms in the interior a receiving space in which a fastening ring (28) for axially fastening the ignition unit (14) is received. The invention also relates to a vehicle safety device (8) and to a method for producing a pyrotechnic actuator (1).

The invention relates to a pyrotechnic drive unit (10), in particular for a hood lifter or an active headrest. Here, the pyrotechnic drive unit (10) has a housing (12) having a cavity (14) in which a piston (16) is mounted, which piston can be moved from a rest position into an activated position. Furthermore, the pyrotechnic drive unit (10) comprises a pyrotechnic unit (20) having an igniter (22) at one end (24) of the housing (12), the pyrotechnic unit being able to move the piston (16) into its activated position. In this case, the housing (12) is closed at one end (32) opposite the pyrotechnic unit (20) on the end side by a closing element (38). The pyrotechnic drive unit (10) comprises a holding element (36) for fixing the pyrotechnic drive unit (10) on the vehicle side, and a closure element (38) connects the housing (12) to the holding element (36). The invention further relates to a method for producing such a pyrotechnic drive unit (10).

There are provided an actuator that can be reduced in weight as compared with a related art while alleviating an impact at an activation, a safety apparatus that ejects an ejected object, and an aerial vehicle including the safety apparatus. A safety apparatus 100 includes an actuator 1, a push-up member 15 that is pushed up in one direction by the actuator 1, an ejected object 16 that is pushed up while being supported by the push-up member 15, a bottomed cylindrical container 18, and a lid 21 that closes an opening end of the container 18. The actuator 1 includes a piston member 10, a cylinder 14 that accommodates the piston member 10 and is provided with a bore 13 through which the piston member 10 protrudes outward at the time of activation, a base 2 to which one end of the cylinder 14 is caulked and fixed and that is attached to a center of a bottom inside the container 18, and a gas generator 17 as a power source for moving the piston member 10 in the cylinder 14.

An exhaust port sealing device includes an internal piston whose outer peripheral surface matches the inner wall of the hull. The outer peripheral surface of the internal piston slides and seals against the inner wall of the hull at the exhaust port assembly. A barrel-shaped piston cylinder is fixedly installed on the hull. The bottom of the piston cylinder has a drive structure, and an internal piston is installed inside. The outer peripheral surface of the internal piston slides and seals against the inner wall of the piston cylinder. The movement direction of the internal piston is consistent with the axial direction of the hull. The internal piston is connected to the internal piston in the cavity via a connecting shaft. The drive structure drives the internal piston away from the bottom of the piston cylinder, thereby pushing the internal piston in the cavity to move and seal the exhaust port assembly via the connecting shaft. This device facilitates accurate measurement of the amount of water flowing into the exhaust port cavity during underwater movement of the hull with exhaust ports, and allows for detection of the water's morphology and quality, thus guiding hull design and predicting water ingress during actual hull operation.