Britax-kolb Gmbh & Co.

Autoflug Gmbh

Hans-Hellmut Ernst

Wilfried Burghardt

Holger Seel

Karl E Nilsson

Josef Mayer

Edmund Lochbihler

Deflection clamping device

In a safety-belt system comprising a winding and locking mechanism, a clamping device is provided which carries out a clamping of the safety-belt outside the reel winding, wherein this clamping effect is caused by a lifting motion of the winding and locking mechanism or of a part thereof and is fastened by suitable means so that the load-bearing clamping organ comes to engage with its entire clamping surface on the belt and the approach of the clamping surface to the belt is synchronized. According to the invention clamping readiness of the clamping organ is begun on every vehicle deceleration of more than 0.45 g and on every belt withdrawal acceleration of more than 1.5 g. The belt winder contains, apart from the driving spring and the winding shaft, only the sensor and control mechanism, and does not require any separate locking elements in order to cause preblocking.

Safety-belt system

An emergency locking retractor for a vehicle safety belt has a spool rotatably mounted on a frame, primary locking means arranged to block rotation of the spool relative to the frame and secondary locking means for actuating the primary locking means. The secondary locking means including an inertia sensor and a pawl pivotally mounted on a carrier which is movable relative to the frame, the pawl being movable by the inertia sensor into simultaneous engagement with a stop member on the carrier and a ratchet wheel coupled to the spool so that subsequent rotation of the spool of the belt protraction direction causes movement of the carrier which in turn actuates the primary locking means. The stop member is so positioned relative to the pivotal mounting thereof that the pawl comes into abutment with the stop member before its pawl tip abuts against the periphery of the ratchet wheel between adjacent teeth thereof.

Safety belt emergency locking retractor

Apparatus for tensioning a strap of a vehicle safety belt system, comprises a cylindrical drum, a first roller journaled on a stationary axis parallel to that of the drum and spaced radially outwardly from the surface thereof, a second roller mounted with its axis parallel to the axis of the drum at a radius between that of the surface of the drum and the first roller, and pyrotechnically powered means for causing angular movement of the second roller about the axis of the drum. Guide means are located at a greater radial distance from the axis of the drum than the second roller and oriented so that, prior to detonation of the pyrotechnic charge, the angular position of the second roller about the axis of the drum is between the first roller and the additional guide means. The strap passes between the second roller and the surface of the drum but radially outwardly of the first roller. Prior to detonation of the pyrotechnic charge, the strap does not touch the surface of the drum. When the charge is detonated, the second roller draws in the strap, wrapping it round the surface of the drum.

Pyrotechnic tensioner for vehicle safety belt

The main locking mechanism of an emergency locking retractor comprises teeth on the flanges of the spool on which the belt is wound, the spool being mounted in bearings arranged to permit limited translational movement in a direction perpendicular to the axis of rotation, between a position in which said teeth formations engage with complementary teeth on the frame of the retractor. Actuating means which are arranged to cause movement of the spool into its engaged position, comprise a ratchet wheel mounted on the spool for rotation and translational movement therewith, a pivotally mounted control member and a pawl which can be moved by a ball-in-saucer sensor into a position in which it couples the control member to the ratchet wheel, so that angular movement of the ratchet wheel in the belt unwinding direction causes angular movement of the control member about a pivot, thus moving the spool so as to bring the teeth on the flanges into locking engagement with the teeth on the frame.

A self-locking belt reeling device for, in particular, motor vehicle safety belts is provided and includes a housing and a belt rewinding shaft, the latter being mounted in the former in a manner preventing axial movement but allowing radial movement under the action of locking-forces, with the ends of the shaft extending through apertures in the housing and being respectively provided with a disc, preferably a toothed disc, in the plane of each of the apertures, at least one of these discs, when locking-forces occur, engaging in a fixed internal toothing of one aperture. The second aperture has a recess for a latch which is mounted therein, this latch being capable of being pivoted into the cross-section of the aperture and into the toothing of the toothed disc associated with this aperture. An actuating element is located on the latch, this element being controlled by the self-locking device.

Self-locking belt reeling device for motor vehicle safety belts

The main locking mechanism of an emergency locking retractor for a vehicle safety belt comprises teeth on the flanges of the spool on which the belt is wound, the spool being mounted in bearings arranged to permit limited movement in a direction perpendicular to the axis of rotation, between a position in which said teeth engage with complementary teeth on the frame of the retractor. In order to optimize the number of teeth which are in engagement with teeth on the frame when the spool is in its engaged position, the tips of the teeth on the frame members are located on a circle centered on the axis of the spool when the latter is in its released position and the locking face of each tooth facing away from the plane in which the axis of the spool moves between its engaged position and its released position is oriented at the same angle to the radial line from such tooth to the axis of the spool when in its engaged position as that between the locking face of each tooth on the discs and the corresponding radius thereof.

A safety seat for motor vehicles, with a safety belt, particularly a three-point belt, stored in an automatic belt roll-up device, and including a lock tongue, a belt lock arranged at the door side of the vehicle, and a flexible, restorable belt-strap guide, which is connected to the seat and/or the belt roll-up device, and is hollow to form a passage for the belt strap which is movable in the guide in the longitudinal direction. The belt-strap guide is limited in length in the manner of a stump. With the safety belt open, the free end of the guide extends essentially straight and forms an abutment or a receiving opening for the lock tongue in the region of the outlet opening for the belt-strap. With the safety belt closed, the belt-strap guide bends elastically under the effect of belt-strap forces in the direction of the path of the particular belt segment.

Safety seat for motor vehicles

A device for rolling on and off safety belts, especially a motor vehicles, which includes a housing and a shaft rotatably journalled in said housing and spring urged in the winding up direction of the safety belt. The safety belt by pulling thereof is adapted to be wound off the shaft against the thrust of the spring. The device is furthermore provided with an arrangement adapted in response to forces of a predetermined magnitude automatically to act upon the safety belt or the device. For absorbing the forces occurring during normal operation on one hand and during a blocking action on the other hand, the shaft is respectively differently journalled for absorbing the forces in axial direction and in radial direction.

Growing community of inventors

Sulfeld, Germany

Hans-Hellmut Ernst