69results about "Pyrotechnical actuators" patented technology

Gas generator (1) comprising, in a cylinder housing (10), a combustion chamber (20) filled with gas generating means (25, 26) as a gas source, and a gas outlet opening (16) for expelling a gas generated by the combustion of the gas generating means (25, 26), wherein the combustion chamber (20) contains an ignition device containing an igniter (11) and closing a first end opening (10a) of the cylinder housing (10), a partition wall (15) closing a second end opening (10b) on the side axially opposite the first end opening (10a), and a perforated cylinder body (21) arranged in the combustion chamber (20); wherein the igniter (11) comprises an igniter main body having an ignition portion (12) and an igniter collar (13) surrounding and holding the igniter main body; wherein the perforated cylinder body (21) is arranged such that its first end (21a) surrounds the ignition section (12) of the igniter (11) and its second end (21b) is arranged on the axially opposite side on the side of the partition wall (15); wherein an interior of the perforated cylinder body (21) is a first chamber (22) filled with a portion of the gas generating means (25), and an exterior of the perforated cylinder body (21) is a second chamber (23) filled with the remaining gas generating means (26); and at least one gas outlet opening (16) is a through hole formed in a section of the partition wall (15) facing the second chamber (23), and no gas outlet opening is formed in a region of a length of more than 0.3 from the surface of the partition wall (15) on the combustion chamber (20) side toward the first end opening (10a) in a portion of the cylinder housing (10) facing the second chamber (23) when a length from the first end opening (10a) of the cylinder housing (10) to the surface, on the combustion chamber (20) side, of the partition wall (15) closing the second end opening (10b) is set to 1, wherein the second end (21b) abuts against a surface (15a) of the partition wall (15) on the combustion chamber (20) side or is provided opposite thereto with a small gap therebetween, the small gap being a gap equal to or smaller than a diameter of holes of the perforated cylinder body (21).

Power tools with detection systems configured to detect a dangerous condition between a person and a cutting tool are disclosed. Fast-acting and low-inertia actuators useable in various applications where a high force must be applied very quickly are disclosed. In power tools, for example in a woodworking machine, a fast-acting and low-inertial actuator as disclosed herein can be used to retract a blade upon detection of a dangerous condition by a detection system. Power tools with a magnetic force holding a blade from retracting until a detection system detects a dangerous condition are disclosed.

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.

There is provided a safety apparatus that not only has excellent safety performance but also has improved ease of accommodation of an ejected object in a container, and is capable of securing diversity of attachment positions to an aerial vehicle as compared with a related art, and an aerial vehicle including the safety apparatus. The safety apparatus includes a pilot chute ejector 62 and a main parachute storage. The pilot chute ejector 62 includes an actuator 1, a push-up member 15 pushed up in one direction by the actuator 1, a pilot chute 16 pushed up while being supported by the push-up member 15, a bottomed cylindrical container 18 that accommodates the actuator 1, the push-up member 15, and the pilot chute 16, and a lid 21 having a fan-shaped cross section that closes an opening end of the container 18. The actuator 1 is fixed at a position shifted from a geometric center of the fan-shaped cross section on a bottom surface of the container 18 via a base 2.

To provide an actuator for a hood lifting device that regulates the retraction of a piston rod when a load from a hood is a predetermined value or less after the piston rod projects out, and can retract the piston rod when the load from the hood exceeds the predetermined value.SOLUTION: An actuator 1 for a hood lifting device moves a piston rod 3 disposed in a cylinder 2 by gas pressure, thereby lifting a hood of a vehicle. The actuator 1 is equipped with a holding mechanism 12 that is fixed on an inner peripheral surface of a tip end portion of the cylinder 2 and holds the piston rod 3 to prevent retraction after the piston rod 3 projects out. The holding mechanism 12 prevents the retraction of the piston rod 3 while being fixed on the inner peripheral surface of the cylinder 2 when a load on the piston rod 3 from the hood is a predetermined value or less, and is separated from the inner peripheral surface of the cylinder 2 to retract in the cylinder 2 along with the piston rod 3 when the load exceeds the predetermined value.SELECTED DRAWING: Figure 1

The present invention relates to a system for separating a connection, in particular a mechanically joined connection, between two components, in particular a motor vehicle door hinge and a motor vehicle body part, such as a vehicle pillar, comprising a housing to be attached to one of the components, a pyrotechnic drive arranged on or in the housing, and an acceleration element that can be driven by the drive and is associated with the connection in such a way that, when the drive is activated, the acceleration element is accelerated towards the connection to remove, in particular destroy, it.

Fast-acting and low-inertia actuators useable in various applications where a high force must be applied very quickly are disclosed. Power tools with detection systems configured to detect a dangerous condition between a person and a cutting tool are disclosed. In power tools, for example in a woodworking machine, a fast-acting and low-inertial actuator as disclosed herein can be used to retract a blade upon detection of a dangerous condition by a detection system. The actuator includes a charge of pressurized fluid and one or more electromagnets to selectively retain or release the pressurized fluid.

Belt tensioner (30) for a vehicle occupant restraint system with a housing (32), a working chamber (34) into which the compressed gas released in the event of restraint flows, a traction cable (24) which extends through an opening (36) in the housing (32), and a sealing bushing (10) for sealing the working chamber (34) with respect to the opening (36) between the traction cable (24) and the housing (32), characterized in that the sealing bushing (10) is cylindrical and comprises an outer sleeve (16) and an inner sealing element (12), wherein the radially outer circular-cylindrical surface of the inner sealing element (12) is surrounded by the sleeve (16), and wherein the sealing bushing (10) is pressed onto the traction cable (24) by plastic deformation of the outer sleeve (16).

To provide a pop-up hood device which facilitates mounting, and can reduce cost.SOLUTION: A pop-up hood device mounted on a moving body includes an actuator for lifting a hood panel of the moving body, and a base member which is provided on the moving body and is mounted with the actuator, wherein the base member has a storage part for storing an end opposite to a side that comes in contact with the hood panel of the actuator.SELECTED DRAWING: Figure 1

An actuator (12) of a vehicle protection system (10) has a housing (26) and a movable piston (14). The piston (14) has a rigid piston tube (34) that is open at one end (42), a rigid cap (48) that closes the end (42) of the piston tube (34), and an annular seal (64). The cap (48) has a pin-shaped projection (52) that extends into the piston tube (34). The seal (64) has a piston-side section (68) and a cap-side section (70) which, prior to activation of the actuator (12), are axially adjacent to one another and merge into one another in one piece, wherein the piston-side section (68) is clamped between the piston tube (34) and the housing (26) and the cap-side section (70) extends axially adjacent to the piston-side section (68) along the piston tube (34) in the direction of the end face (42) of the piston tube (34).The seal (64) has a predetermined tear zone (78) at which the cap-side portion (70) of the seal separates from the piston-side portion (68) of the seal (64) during the movement of the piston (14). The cap (48) is fixed to the piston tube (34) by caulking the pin-shaped projection (52) against an inner peripheral surface (56) of the piston tube (34).

The present invention relates to the technical field of emergency equipment, and provides a passive emergency actuator with controllable execution process speed, comprising a mechanism body, wherein the mechanism body comprises an actuating cylinder, a piston unit which can be displaced along the inner wall of the actuating cylinder is connected to the actuating cylinder, a cylinder cover unit is arranged at the cylinder mouth of the actuating cylinder, an air source mechanism and a connecting mechanism are arranged in the piston unit, respectively, a wire on the connecting mechanism extends to the outside of the piston unit, a switch sensor device is connected to the wire outside the piston unit, a power cavity is formed between the end of the piston unit away from the connecting mechanism and the cylinder bottom of the actuating cylinder, a ventilation mechanism is arranged between the air source mechanism and the power cavity; the air source mechanism, the connecting mechanism, etc. are all arranged in the piston unit, and will not come into contact with the outside air and rainwater, etc., so as to avoid rusting; avoid increasing the risk factor on the scene; and realize remote sensing of the occurrence of emergency situations such as fire.

In particular, it provides a tensioning device that can be more easily adapted to different requirements. [Solution] The present invention relates to 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 fastening movement, a fastening tube (5) for receiving and guiding the piston (2), and a receptacle (6) that houses the gas generator (1).

The invention relates to an opening device for a motor vehicle door (1), which is equipped with a plunger (2), an electric motor drive (3, 4), and a pyroelectric actuator (7, 8). The electric motor drive (3, 4) and the pyroelectric actuator (7, 8) act selectively on the plunger (2). According to the invention, the electric motor drive (3, 4) and the pyroelectric actuator (7, 8) are divided into two spatially and functionally separate modules (3, 4, 5, 6; 2, 7, 8, 9). These are, on the one hand, a drive module (3, 4, 5, 6) and, on the other hand, an actuator module (2, 7, 8, 9).

The invention relates to a positioning device for a motor vehicle door (1). This is equipped in its basic construction with a tappet (3), furthermore with an electromotive drive (4, 5, 6, 7, 8), and with a pyro-actuator (9). The drive (4, 5, 6, 7, 8) and the pyro-actuator (9, 10) act selectively on the tappet (3). According to the invention, the tappet (3) has a teeth (11) for engaging the electromotive drive (4, 5, 6, 7, 8) on one side and at least one stop (13, 14, 15) for the pyro-actuator (9, 10) on the other side.

The invention relates to a decoupling module for two releasably interconnected components, comprising at least: a module housing having a first coupling interface for one of the components and having a hollow space, a locking unit which is mounted axially displaceably in the module housing on one hand and which is mounted axially displaceably in the module housing on the other hand, and a second coupling interface for the other component on the other hand, the locking unit at least partially protrudes from the module housing in an initial state in order to releasably lock the two parts to each other, and a drive unit, on the other hand, which is arranged in the module housing in a positionally fixed manner, the locking unit and the drive unit being designed to interact in such a way that, when the drive unit is triggered or ignited, the locking unit can lock the two parts to each other. The locking unit may be subjected to a pressure shock propagating in the hollow space or suddenly and directly to the pressure shock and moved into the module housing.

A pyrotechnic switching device comprises a housing containing fixed contacts (104,106, figure 1), a movable contact 108, and at least one pyrotechnic actuator 202 which when activated moves the movabl

The invention relates to a decoupling module (200, 300, 400, 600) for two releasably interconnected components, comprising at least - a module housing (202, 302, 402, 602) with a first coupling interface (202.3) for one of the components and with a cavity (204, 404), - a locking unit (206, 306, 408), which is axially movably mounted in the module housing (202, 302, 402, 602) at one end and, in an initial state, projects at least partly out of the module housing (202, 302, 402, 602) in order to releasably lock the two components in relation to one another, and - a drive unit (208, 308, 408), which is arranged at a fixed location in the module housing (202, 302, 402, 602) at the other end, wherein the locking unit (206, 306, 406) and the drive unit (208, 308, 408) are designed to interact such that, when the drive unit (208, 308, 408) is triggered or ignited, the locking unit (206, 306, 406) can be, or is, abruptly activated directly by a surge of pressure propagating in the cavity (204, 404) and moves into the module housing (202, 302, 402, 602).

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.

The invention relates to a positioning device for a motor vehicle door (1). Its basic design includes a tappet (3), an electric motor drive (4, 5, 6, 7, 8), and a pyroactuator (9, 10). The drive (4, 5, 6, 7, 8) and the pyroactuator (9, 10) selectively act on the tappet (3). According to the invention, the tappet (3) has, on the one hand, a toothing (11) for engagement with the electric motor drive (4, 5, 6, 7, 8), and, on the other hand, at least one stop (13, 14, 15) for the pyroactuator (9, 10).

The invention relates to a motor vehicle (10) comprising a main body (11) and wheels (12) attached to the main body (11), wherein each wheel (12) is attached to the main body (11) by means of a suspension (13), wherein each suspension (13) is adapted to lift the main body (11) with respect to the respective wheel (12). Each suspension (13) comprises a pyrotechnic lifter (14) adapted to lift the main body (11) with respect to the respective wheel (12). The invention further relates to a method for controlling a safety system (23) of a motor vehicle (10).

The invention relates to the technical field of gas explosion type sound sources, and discloses a synchronous excitation control system and method for a gas explosion sound source array, and the control system comprises a control assembly and the gas explosion sound source array connected with the control assembly. The gas explosion sound source comprises an electromagnetic valve, a cylinder body, a valve core, a piston, an induction magnet assembly, an induction coil assembly and a gas inlet nozzle; the valve core comprises a valve core main body part and a valve core connecting part; a valve core is arranged in the cylinder body, and a main air chamber is formed between a main body part of the valve core and the cylinder body; an electromagnetic valve and an air inlet nozzle are respectively arranged on the end face of the valve core main body part; the piston is arranged in the groove of the valve core main body part and is movably matched with the surface of the valve core connecting part; an induction magnet assembly is arranged on the piston, and an induction coil assembly corresponding to the induction magnet assembly in position is arranged on the cylinder body; according to the invention, synchronous excitation and synchronous control can be carried out on the gas explosion sound source array, the integral structure integration is strong, and the environmental adaptability is good.

Provide a safety device that enables easy pushing back of the piston towards the retracted position. 【Solution means】The safety device (100) includes a housing (1) having a first end (2) and a second end (3), a piston (4) fitted therein, and a gas generator (15). The piston (4) has a first end that forms a pressure surface (6) facing the first end of the housing (1). A gas chamber (8) is formed between the pressure surface (6) of the piston (4) and the inner wall (7) of the housing (1), and the gas generator (15) is in the gas chamber (8). The housing (1) includes a gas discharge configuration (20) at its second end (3), whereby when the piston (4) is in a fully or substantially fully extended position, the gas generated by the gas generator (15) is discharged from the gas chamber (8).

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 decoupling module (200, 300, 400, 600) for two detachably connected components, comprising at least - a module housing (202, 302, 402, 602) with a first coupling interface (202.3) for one of the components and a cavity (204, 404), - a locking unit (206, 306, 408) which is axially movable in the module housing (202, 302, 402, 602) and, in an initial state, protrudes at least partially from the module housing (202, 302, 402, 602) in order to detachably lock the two components together, and - a drive unit (208, 308, 408) which, on the other hand, is fixedly arranged in the module housing (202, 302, 402, 602), wherein the locking unit (206, 306, 406) and the drive unit (208, 308, 408) are designed to interact in such a way that, upon triggering or ignition of the drive unit (208, 308, 408) the locking unit (206, 306, 406) can be directly subjected to or is subjected to a pressure surge spreading in the cavity (204, 404) and moves into the module housing (202, 302, 402, 602).

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).

An actuator (12) in a vehicle protection system (10) has a housing (26) and a movable piston (14). The piston (14) comprises a rigid piston tube (34) open at one end face (42), a rigid cap (48) with a cover part (50) closing the end face (42) of the piston (14), and an annular seal (64). The cap (48) has a pin-shaped projection (52) which extends into the piston tube (34), wherein the seal (64) surrounds the pin-shaped projection (52) and wherein the end face (42) of the piston (14) has an axially tapered cutting edge structure (68) which projects into the seal (64) such that the cutting edge structure (68) delimits a radially inner section (70) of the seal (64) between the pin-shaped projection (52) and the cutting edge structure (68) from a radially outer section (72) of the seal (64) radially outside the cutting edge structure (68).To manufacture the actuator (12), the seal (64) is placed on the cutting edge structure (68) of the piston tube (34) and the cap (48) is placed on the open end face (42) of the piston tube (34) such that the pin-shaped projection (52) projects into the piston tube (34) and the cover part (50) rests on the seal (64) and is arranged axially above the cutting edge structure (68), and the pin-shaped projection (52) is caulked on an inner circumferential surface (56) of the piston tube (34).

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 output device and / or an output device assembly configured to be initiated in response to different types of input is provided. The output device 100 comprises a housing 110 defining a chamber 112 a

An actuator (12) in a vehicle protection system (10) has a housing (26) and a displaceable piston (14). The piston (14) comprises a rigid piston tube (34) which is open at one end face (42), a rigid cap (48) which closes the end face (42) of the piston (14) and has a cover part (50), and an annular seal (64). The cap (48) has a pin-shaped projection (52) which extends into the piston tube (34), wherein the seal (64) surrounds the pin-shaped projection (52), and the end face (42) of the piston (14) has an axially tapering cutting structure (68) which protrudes into the seal (64) such that the cutting structure (68) delimits a radially inner portion (70) of the seal (64) between the pin-shaped projection (52) and the cutting structure (68) from a radially outer portion (72) of the seal (64) radially outside the cutting structure (68). In order to produce the actuator (12), the seal (64) is placed on the cutting structure (68) of the piston tube (34), the cap (48) is placed on the open end face (42) of the piston tube (34) such that the pin-shaped projection (52) protrudes into the piston tube (34) and such that the cover part (50) rests on the seal (64) and is positioned axially above the cutting structure (68), and the pin-shaped projection (52) is caulked to the inner circumferential surface (56) of the piston tube (34).