C Rob. Hammerstein Gmbh

Daimler-benz Ag

Firma C. Rob. Hammerstein Gmbh

Rob. Hammerstein Gmbh

Alfred Gedig

Burckhard Becker

Heinz Bauer

Ernst-Reiner Frohnhaus

Josef Klink

Antonin Koucky

Reiner Frohnhaus

Manfred Behrendt

Jurgen Busch

The self-locking revolute joint can be adjusted at angles by turning an activation lever back and forth. It has a mount in which a bearing shaft rests rotatably in bearings, and supports an adjustment wheel which is provided with tooth profiles. The activation lever can be turned in both rotational directions around a turning axle resting in bearings in the mount; it has two swing-out carriers which do not engage with the adjustment wheel when the activation lever is in its central position; when the activation lever is turned, one of them engages with an adjacent tooth profile of the adjustment wheel and brings it to turn. Further, two locking arms rest rotatably in bearings at the mount and lock and adjustment wheel when the activation lever is in its central position. Each one of two radial cams arranged on the activation arm confunctions with a locking arm, via a release arm. When the activation lever is turned out of the central position, one radial cam brings the related release arm along and thus disengages the locking arm in the momentary drive direction.

Self-locking revolute joint, adjustable to an angle by moving an

A seatbelt lock is mounted to be movable as little as possible relative to the seat surface when the seat surface is adjusted in height or inclination. The seat has a longitudinal guide 20, 22, a device 24 for adjustment of height or inclination and a belt lock attachment 32. The lower end of the belt lock attachment 32 is affixed to the seat rail 22 of the longitudinal guide and carries a belt lock 34 at its upper end. The belt lock attachment has a lower part 38 linked to the seat rail and an upper part 40 linked to the seat carrier 26, the upper part being connected with the belt lock. One of these parts 38, 40 can move freely in a longitudinal guide formed by the other part. One part has at least one locking projection 60; and the other part has locking devices 46 interacting with the projection. By means of a safety piece 50, the two parts are held in a normal position permitting movement. When extreme forces induced during an accident act on the belt, the safety piece is overridden, whereby the locking projection engages in the locking device and removed of the upper part from the lower part is precluded.

Vehicle seat with a longitudinal guide, with an adjustment of height or

The self-locking revolute joint which can be step by step adjustable to an angle by means of pumping movements of an activation lever is particularly suitable for adjustment of seat height or backrest inclination of vehicle seats. It has a mount in which a bearing shaft is journalled. Further, it has a locking disk with notches arranged at equal angular intervals and with a torsion-proof connection with the bearing shaft; further a locking element which is preferably journalled with turning capability at the mount, also having a locking tooth confunctioning with the notches and being elastically prestressed in the engagement direction of this locking tooth and having a total of two control profiles, each one of which has a release profile and an unblocking indentation, the distance between which corresponds to the angular intervals between the notches, and confunctioning with carriers, which can be adjusted by means of the activating lever. Thereby, a return spring is assigned to the activation lever, prestressing the latter into the central position. The activation lever has a rigid connection with an activation plate, which is journalled to turn freely with the bearing shaft. On the activation plate, around a linkage axle, a release segment is linked so that it can be freely turned, having two carriers arranged symmetrically to the line connecting the linkage axle and the axis of the bearing shaft, being prestressed by means of a return spring into a neutral position, in which both carriers are disengaged from the notches and these carriers are arranged so that after a turning away from the neutral position, one of the carriers engages in one notch, while the other impacts on the adjacent release profile of the locking element and unlocks it.

Self-locking revolute joint, adjustable step by step to an angle by

The guide rail assembly for a vehicle seat comprises two pairs of interhooked guide rails one being secured to the seat and the other to the floor of the vehicle. The seat rail includes a mounting member for safety belts and in the proximity of the mounting member is secured to a hook-shaped reinforcing member which engages a corresponding hook-shaped portion of a cooperating reinforcing rail which is secured to the stationary guide rail. The upper hook-shaped reinforcing member is dimensioned such as to be deformed in the case of excessive loads applied to the safety belt thus preventing the guide rails from being torn apart.

Guide rail assembly for a vehicle seat

The vertical and angular position adjusting device for motor vehicle seats includes a pair of base frames and a pair of seat carriers, each base frame and each set carrier being linked by a support arm and by an elbow joint to form a five-bar linkage, the lower lever of the elbow joint and the support arm being provided respectively with a gear segment and the base frame portion between the two gear segments pivotably supporting a two-arm control member having each arm terminated with locking teeth cooperating with the corresponding gear segment to lock the latter in an adjusted angular position. The control member is spring-biased and guided in an oblong slot so that it is controllable by a handle out and into engagement with the gear segments.

Vertical and angular adjustment device for vehicle seats

A lockable guide assembly for adjustable vehicle seats comprising a pair of parallel guided rails attached to the vehicle seat; a pair of parallel guiding rails slidably arranged with respect to the guided rails and attached to the vehicle floor. Each of the rails is formed with a high-webbed U-shaped cross-section with inner and outer arms substantially overlapping with the arms of the U-shaped section of the other rail, the height of each section being about twice its width. The inner arm on each rail extends into the U-shaped portion of the other rail occupying nearly the full depth of the U-shaped portion leaving only a small gap between the free end of the inner arm and the inside surface of the U-shaped portion of the outer arm. The outer arms are wider or deeper than the inner arms and extending beyond the depths of the inner arms, and the outer circumference of the U-shaped portion of the guided rails is straddled by the arms of the guiding rail.

Lockable guide assembly for adjustable vehicle seats

An arrangement for arresting a seat of a vehicle includes an elongated stationary element which is provided with a row of separate recesses being arranged on the element so as to correspond to a plurality of possible positions of the seat. At least two blocking elements are provided for joint movement to a rest position in which the seat is free to move lengthwise of the row of recesses; each of the blocking elements is movable independently of the other from the rest position to an arresting position in which the blocking elements are inserted in respective recesses independently of one another to thereby prevent further movement of the seat.

Arrangement for arresting a seat of a vehicle

The vertical and angular position adjusting device includes at each lateral side of the seat a five-bar linkage including an underframe, a seat carrier bar, a pair of two-arm support levers pivotably connected to the frame, a coupling bar linked between the outer arm of one of the support levers and an end portion of the carrier bar, and the other end portion of the carrier bar being hinged to the outer arm of the other support lever. The support levers at one lateral side of the seat have gear segments formed on the inner arm of each support lever. A pair of arresting levers is linked to the underframe between the support levers and is provided with arresting teeth engageable with respective gear segments. A pair of switching levers is linked to the underframe between the arresting levers and is spring-biased to abut against a front locking surface provided on each arresting lever in order to hold the latter in a locking position. A control lever is linked to the underframe between the switching levers and supports a cam which displaces the switching levers against the force of the spring into a released position in which the selected arresting lever is disengaged from the support lever.

Growing community of inventors

Solingen, Germany

Alfred Gedig