Abstract: A roll-up device, particularly for safety belts used in vehicles. The device provides a so-called automatic belt blocker with belt-sensitive and/or vehicle-sensitive blocking of the belt winding spindle, which is provided with a projection which cooperates with a locking member, which in turn can be locked in place via detents which engage with notches associated with a housing. There is the problem that, in the event of high belt forces, the locking member will slip away from the projection, and thus from the notches of the housing, thereby freeing the blockage. The aim of the invention is therefore to prevent the locking member from breaking out of its predetermined position in this way. To solve this problem, at least one overlapping arrangement is provided between the projection of the belt winding spindle, and the radially deflectable locking member, to ensure that the locking member does not move out of its position in the axial direction of the belt winding spindle during blocking.

Abstract: A locking apparatus for use with safety belts of the type protracted and retracted on a spool which is locked by inertia forces in an emergency. The safety belt passes through a clamping assembly which is activated upon sliding movement of the retractor reel from protraction forces in the locked state greater than a pre-established threshold amount.

Abstract: Anchorage for the belt latch of a safety belt arranged in vehicles, especially motor vehicles, with a lock fitting which is connected to the height-adjustable seat. A frame fitting, relative to which the lock fitting can slide in a guide. A locking part for connecting the above-mentioned fittings upon the action of a pulling force cancels the holding force of a connecting element on the belt. The locking part designed as a rocking lever is pivoted on the one side at the height-adjustable seat and on the other side at the lock fitting. The locking part has a detent serration which in normal operation is held by the connecting element (shearing pin) at a distance from a detent element of the frame fitting and is swung, after the holding force is overcome, and is detented by the detent element forming a lock.

Abstract: There is disclosed an improvided belt holder for a passive seat belt assembly, which connects first and second belts extending from different portions of a motor vehicle. The belt holder comprises a base plate fixed to the first belt and having spaced side walls, the side walls being formed with respective elongate slots at positions manually facing each other; a shaft passing through the elongate slots to span between the side walls, the second belt passing round the shaft, the shaft taking both a first position where the shaft is freely rotatable about the axis thereof permitting the second belt to be freely movable longitudinally with rotation of the shaft and a second position where the shaft tightly grips the second belt thereby fixing the second belt to the base plate; and means for holding the shaft in the first position until a predetermined magnitude of force is applied thereto.

Abstract: A main shaft is threadably coupled to a base mounted on a vehicle body, and this main shaft is biased by a spring in the axial direction thereof. However, the main shaft is prevented from rotating by an arm tiltably supported on the main shaft being engaged with a stopper provided on the base. In an emergency of a vehicle, an acceleration sensor turns the arm to slip off the stopper to make the main shaft rotatable, whereby the main shaft rotatingly moves in the axial direction thereof. This moving force is transmitted to the webbing, whereby the webbing is retracted, so that the webbing can be closely fastened to an occupant.

Abstract: A rotary power element for tensioning devices of safety mechanisms for protecting the occupants of vehicles by the use of safety belts has a rotatable drive mechanism, a compress-gas generator, and a tubular element between the drive mechanism and the compressed-gas generator. Also, the element includes at least one preformed acceleration member arranged in the tubular element. This member is capable of being driven forward against the drive mechanism under the action of compressed gas produced by said compressed-gas generator to accelerate the drive mechanism.

Abstract: A seatbelt tightening device for tightening a seatbelt and removing a sag therefrom in a collision of a motor vehicle, characterized by a rod connected thereto with one end of a seatbelt, a spring for biasing the rod in a direction of tightening the seatbelt, a locking wire for drawing and restraining the rod or spring to a stand-by position against the biasing force of the spring, and means including an electric power source and a collision sensor, for heating and fusion-cutting the locking wire by a current passage from the power source when the collision sensor is turned "ON".

Abstract: A restraint belt retractor includes a belt reel rotatably mounted on a retractor housing which is adapted for mounting on the vehicle seat. A winding spring rotates the reel in a belt winding direction. The imposition of an occupant restraint load on the belt subsequent to reel lockup by an inertia actuated reel locking means actuates a belt clamping mechanism which clamps the belt to limit its extension from the reel. The retractor housing also mounts a rotatable anchor belt reel for winding and unwinding an anchor belt having an end mounted on the vehicle body rearward of the seat. A lock bar for locking the anchor belt reel is actuated to the locking condition in response to the actuation of the belt clamping mechanism to thereby fix the length of the transfer belt and anchor the retractor housing and seat against forward movement by the occupant restraint load.

Abstract: A seat belt tensioning device comprises a cylinder, a piston which is slidably inserted within the cylinder, a rod which connects the piston and the seat belt, a piston pushing means which is provided within the cylinder for applying driving force to the piston, a trigger means which comprises a plurality of rings and balls interposed between opposed rings and which is provided in the cylinder for usually locking the rod into the cylinder overcoming the driving force of the piston pushing means and releasing the rod from the cylinder to allow the movement of the piston only at an urgent time, and a driving means for driving the trigger means to release the rod from the cylinder at an urgent time.

Abstract: A cylinder-piston type seat belt tensioning device comprises a broach pipe wherein a broach rod which is connected to a seat belt is disposed, a load limiting member connecting the broach rod to the piston, which is broken at a predetermined load, and locking means for locking the broach pipe in the cylinder when the load limiting member is broken. After the load limiting member is broken at a predetermined load, the broach rod returns while plastically deforming the broach pipe to absorb the kinetic energy of the occupant.

Abstract: A section of a webbing between a takeup shaft and an occupant fastened portion thereof is guided around a roller pivotally supported on a rotatable plate, and the rotatable plate adapted to be rotated by an increased tension of the webbing is caused to approach a lock bar to clamp the webbing between the roller and the lock bar, whereby the movement of the webbing in the longitudinal direction thereof is prevented, so that an occupant can be restrained. The roller is prevented from rotating by lock means when the occupant is restrained, whereby the webbing is decreased in tension at the portion of the roller, so that an abrupt change in tension at the clamped portion of the webbing between the roller and the lock bar can be prevented, thereby enabling to avoid breakage of the webbing.

Abstract: A belt clamping mechanism for a seat belt retractor having a belt reel rotatably journaled on a frame and a locking means for locking the reel against unwinding rotation. The retractor frame is mounted on the vehicle body for limited movement in the direction of belt pull. A yieldable device such as a frangible member acts between the frame and the vehicle body to establish the frame at a normal position in which a belt clamping member carried by the retractor frame is spaced from a clamping abutment mounted on the vehicle body. When the reel is locked and an occupant restraint load is imposed on the belt, the yieldable device permits movement of the reel and the frame in the direction of belt pull so that the belt is clamped between the clamping member carried by the frame and the clamping abutment mounted on the vehicle body to fix the belt length against spooling down on the reel.

Abstract: Restraining system, especially a passive restraining system, for motor vehicles wherein one end of the belt is slideable in a slider track, preferably arranged above the vehicle door, and can be locked at the end of the track behind a securing element which extends into the slider track. An inertial mass sensor activated when an acceleration or tilting force exceeds a predetermined value, results in movement of the inertial mass in the direct path of the movable securing element causing blocking of its movement and retaining it in locked position to lock the belt end.

Abstract: A seat belt tensioning device for a vehicle comprises a fixed member fixed to a vehicle body, a movable member which is movable in the direction opposite to the fixed member, a bellow shaped flexible member, both ends of which are secured to the fixed member and the movable member to form a sealed chamber, a rod, one end of which is secured to the movable member, the other end of which is connected to a seat belt through the sealed chamber, and a guide member which is provided along the flexible member for guiding the elongation of the flexible member. One end of the guide member is airtightly fixed to the movable member and the other end of the guide member extends in the direction opposite to the movable member while airtightly and slidably contacted with the fixed member at an urgent time such as upon a vehicle impact, a high pressure gas is produced and is poured into the sealed chamber. Then, the flexible member which is usually contracted, is elongated due to the high gas pressure.

Abstract: A linear belt storage retractor includes a locking mechanism attached to the end of the belt and travelling vertically inside a vertical tubular housing mounted on the vehicle body. The weight of the locking mechanism retracts the belt into the tubular housing. The locking mechanism includes a ramp member attached to the belt and having a ramp surface facing the inner wall of the tubular housing. A wedge member is seated upon the ramp surface and moves radially relative the inner wall upon axial movement relative the ramp member. A platform engages the wedge member and is spring biased to support the wedge member at a normal position away from the inner wall.

Abstract: An energy absorbing device for use with a vehicular seat belt includes a housing adapted to be secured to the vehicle and defines a circular interior space and a narrow passage extending between the interior space and the outer surface of the housing. An elongated rod-like strip of a metal has a coiled end portion having a plurality of turns disposed in the circular space. An intermediate portion of the metal strip extends from the interior space outwardly through the narrow passage and terminates in the other end which is adapted to be connected to the seat belt. The junction between the circular space and the narrow passage is shaped to bend successive portions of the metal strip and guide them into the narrow passage when a tension of a magnitude greater than the bending stress of the metal strip is applied to the outer end of the strip during a collision.

Abstract: A seat belt tensioning device having a piston return stop device including a tapered member with an inclined surface rising toward one end which is slidably disposed within an axial hole of a piston and is connected to the piston through a connecting member breakable by a predetermined tension force. The other end of the tapered member is connected with a seat belt. Stopper members are slidably disposed within radial guide grooves of the piston and at their outer ends are slidably in contact with an inner wall of a piston cylinder while their inner ends are in contact with the tapered member.When the tension force of the seat belt reaches a predetermined value at an urgent time, the connecting member is broken and the tapered member is moved within the piston in a direction reverse to the travelling direction of the piston to push the stopper members toward the cylinder wall. Then the outer ends of the stopper members cut into the cylinder wall so that the return of the piston is stopped with certainty.

Abstract: A drum is arranged coaxially with a winding barrel for winding up a webbing for restraining an occupant, the winding barrel is provided therein with an internal gear ratchet wheel and the drum is provided at the outer periphery thereof with a pawl for meshing, respectively, and, in an emergency of a vehicle, the drum is rotated, whereby the pawl is meshed with the internal gear ratchet wheel by use of cam means so that the winding barrel can be forcedly rotated in the direction of winding up the webbing, to thereby closely attach the webbing to the occupant.

Abstract: A seat belt tensioning device which restrains the passenger and absorbs his kinetic energy at an urgent time such as upon an impact of a vehicle. A piston is slidably disposed within a cylinder so as to move in only one direction. Return stop means prevents the piston from moving in an opposite direction. A metallic deformable member is disposed within a cavity of the piston, one end of the member being fixed to the piston, the other end thereof being connected to a seat belt. Piston operating means moves the piston within the cylinder at an urgent time and tensions the seat belt to restrain the passenger. When the tension force applied to the seat belt exceeds the deforming stress value of the metallic deformable member, the member is plastically deformed and the seat belt is drawn out of the cylinder to absorb the kinetic energy of the passenger.

Abstract: Mechanism for retracting a vehicle seat belt and locking the belt against extension includes a track mounted on the vehicle body and a belt carriage mounted on the track for movement in the belt extending and retracting directions. A return spring biases the carriage in the belt retracting direction. The belt carriage has a locking knife edge engageable with a knife edge on the track to lock the belt carriage against belt extending movement when the carriage is pivoted bodily relative the track. A spring mounted on the carriage slidably bears upon the track to urge the carriage to a normal position wherein the locking edge is spaced from engagement with the track. The seat belt is attached to the carriage by a yoke which bodily pivots the carriage to engage the locking edge with the track upon attempted rapid extension of the belt.

Abstract: A device for tightening a safety belt for vehicles provided with an inertial switch adapted to sense abnormal changes in the movement of the vehicle, a motor being arranged to activate the safety belt by means of a cylindrical inertial body connected thereto. The body under normal operating conditions is under rotation, and activating means is also provided to connect with the inertial body to tighten the safety belt when such abnormal changes in movement take place, thereby utilizing the energy of the rotating body for tightening of the belt.

Abstract: A moveable mass is part of a resilient spring system, in which the spring is a leaf spring restrained in a housing. Strain gauges are applied to the leaf spring, the outputs of which are integrated in a bi-polar integrator. Vibration of the leaf spring will cause sequential integration in reverse direction and, accordingly, a low output signal; deflection of the mass, for example upon on impact, will cause the integrator to provide a strong integrating signal which can trigger a collision safety system. The inherent, or characteristic frequency of the system is so selected that it is above the frequency occurring upon an impact of the sensor, or upon collision, but below the frequency occurring due to concussions to which the vehicle, or the mounting post of the apparatus on the vehicle, is subjected in use, or repair.