Abstract: An externally powered car brake for a lift system and, for the activation thereof, a circuit arrangement with integrated stepped control of the deceleration of the car during emergency braking are proposed. According to the invention, a braking system having the full braking force or a braking force adapted to the operating parameters and a subsequent control of the deceleration on the basis of an acceleration measurement with stepped reduction of the braking force are proposed. The control is designed such that the deceleration of the car is always within predefined threshold values, which applies independently of the direction of travel of the lift car, independently of the drive system of the lift used, and independently of the car loading and of the friction coefficient between the brake lining and the guide rail.

Abstract: An electromagnetically switchable brake, preferably spring-loaded brake, comprising at least one coil carrier (3) and at least one armature plate (1), wherein the axial distance of the coil carrier and armature plate relative to out another is variable, comprising at least one rotor (7) or at least one hub of a shaft to be braked, and comprising damping members arranged between the armature plate (1) and coil carrier (3), between the end faces of the coil carrier (3) and armature plate (1) which face one another. It is considered to be novel and inventive that the solid body of coil carrier (3) and/or armature plate (1) has an integral damper structure (D), which is composed of an least one elastic tab (12) and a foot (13), the elastic tab (12) being an integral part of the solid body of the armature plate (1) or of the coil carrier (3) (FIG. 1.1).

Abstract: Preventative function control in electromagnetic spring pressure brakes is disclosed. Initially, the spring pressure brake is controlled by voltage. Next, state variables current and voltage are measured. Subsequently, a determination variable is determined and summed over a first range, which extends from a starting point of actuation to a point at which an armature disk begins to move. At the point, current value is detected at which movement of the armature disk begins. The determination variable is summed over a second range, which extends from the starting point, when the current reaches the value detected above, up to a constant current. Subsequently, a ratio is calculated from the sum of the determination variable over the range to the sum of the determination variable over the first and second ranges. Upon reaching a predetermined value by the value of the ratio, a state signal is output.

Abstract: An externally powered car brake for a lift system and, for the activation thereof, a circuit arrangement with integrated stepped control of the deceleration of the car during emergency braking are proposed. According to the invention, a braking system having the full braking force or a braking force adapted to the operating parameters and a subsequent control of the deceleration on the basis of an acceleration measurement with stepped reduction of the braking force are proposed. The control is designed such that the deceleration of the car is always within predefined threshold values, which applies independently of the direction of travel of the lift car, independently of the drive system of the lift used, and independently of the car loading and of the friction coefficient between the brake lining and the guide rail.

Abstract: A shape-memory actuator assembly, comprising a shape memory wire element; a first deflection body and a second deflection body, spaced apart from each other, wherein the shape memory wire element is wound around the first deflection body and the second deflection body several times and provides an actuator arrangement located between them. At least one wire holder on the respective deflection body and sections of the shape memory wire element, contacting the wire holder, are embedded in a casting compound.

Abstract: The invention relates to a method for preventive function control in an electromagnetic spring pressure brake for a simpler and more accurate determination of the critical operating state. The spring pressure brake comprises at least one coil, and an armature disk, a coil carrier having compression springs distributed thereon, a control module, and a monitoring module having at least one semiconductor component, a current measuring device, and a voltage measuring device, wherein the method comprises the following steps: Initially, the spring pressure brake is controlled by the control module by means of a voltage. Next, the state variables current (I) and voltage (U) at the electromagnetic spring pressure brake are measured by the monitoring module. Subsequently, a determination variable (T; F) of the electromagnetic spring pressure brake is determined by the monitoring module.

Abstract: An electromagnetically switchable brake, preferably spring-loaded brake, comprising at least one coil carrier (3) and at least one armature plate (1), wherein the axial distance of the coil carrier and armature plate relative to out another is variable, comprising at least one rotor (7) or at least one hub of a shaft to be braked, and comprising damping members arranged between the armature plate (1) and coil carrier (3), between the end faces of the coil carrier (3) and armature plate (1) which face one another. It is considered to be novel and inventive that the solid body of coil carrier (3) and/or armature plate (1) has an integral damper structure (D), which is composed of an least one elastic tab (12) and a foot (13), the elastic tab (12) being an integral part of the solid body of the armature plate (1) or of the coil carrier (3) (FIG. 1.

Abstract: A method for controlling an electromagnetic brake (1) having a coil carrier (2), a solenoid (5), an armature disc (7), and at least one further force-exerting element. The internal and external poles (3, 4) of the coil carrier each have a front surface with a varying gradient that fits, in a complementary fashion, the front surfaces of the respective internal and external poles (8, 9) of the armature disc. The brake has an air gap (11) which varies in size and forms a stroke region (21). When excitation occurs, the solenoid generates a magnetic force, and the force-exerting element generates an opposing force, wherein the ratio of the solenoid's magnetic force and the opposing force varies at least once between greater than and smaller than one during the movement of the armature disc in the stroke region owing to the variation of the excitation of the solenoid.

Abstract: Disconnecting overload clutch, comprising a hub (5) which has axially directed hub recesses (4) arranged on the periphery thereof, a pressure flange (1) mounted on the hub (5) in a rotatable manner with axially directed pressure flange depressions (2), wherein in each hub recess (4), for example, two rotationally symmetrical transmission bodies (3,9) are arranged, which are pressed into the pressure flange depressions (2) by spring elements (6) via a switch element (7). According to the invention, the switch element (7) has axially projecting switch element cams (8) facing the front-end exposed surface (21) thereof, which in the engaged state transfer the force of the spring elements (6)to the transmission bodies (3,9) and thus axially engage with the hub recesses (4).

Abstract: A method for controlling an electromagnetic brake (1) having a coil carrier (2), a solenoid (5), an armature disc (7), and at least one further force-exerting element. The internal and external poles (3, 4) of the coil carrier each have a front surface with a varying gradient that fits, in a complementary fashion, the front surfaces of the respective internal and external poles (8, 9) of the armature disc. The brake has an air gap (11) which varies in size and forms a stroke region (21). When excitation occurs, the solenoid generates a magnetic force, and the force-exerting element generates an opposing force, wherein the ratio of the solenoid's magnetic force and the opposing force varies at least once between greater than and smaller than one during the movement of the armature disc in the stroke region owing to the variation of the excitation of the solenoid.

Abstract: A compact control device for failsafely controlling an electrical actuator capable of moving a movable machine part into a defined end position, has an input connection for receiving an external control signal representing a desired position of the machine part. The compact control device further has an input part for detecting a position signal, which signals an actual position of the machine part at the defined end position. A power section comprises a power switching element for switching on and failsafely switching off a control current for the actuator that is supplied to the electrical actuator via a first output connection. The compact control device has a second output connection for providing an external status signal and an evaluation unit which actuates the power switching element depending on the external control signal and generates the external status signal at the second output connection depending on the position signal.

Abstract: A disengaging overload clutch, having a clutch hub and a pressure flange mounted rotatably and in which transmission bodies are held in the recesses of the pressure flange by way of the force of spring elements and transmit the torque from the pressure flange to the clutch hub. During overload between the clutch hub and the pressure flange, the clutch moves in—a first rotational direction into a disengaged state, wherein the relatching takes place by rotation between the clutch hub and the pressure flange in a second opposite rotational direction; or more precisely by the interaction between the control pins, control cams which are connected to the clutch hub, and control grooves with groove flanks. The control pins are fitted with pin magnets, which are pressed away from control magnets of identical polarity, in order to bring the control pins into engagement with the control cams and the control grooves.

Abstract: Disconnecting overload clutch, comprising a hub (5) which has axially directed hub recesses (4) arranged on the periphery thereof, a pressure flange (1) mounted on the hub (5) in a rotatable manner with axially directed pressure flange depressions (2), wherein in each hub recess (4), for example, two rotationally symmetrical transmission bodies (3,9) are arranged, which are pressed into the pressure flange depressions (2) by spring elements (6) via a switch element (7). According to the invention, the switch element (7) has axially projecting switch element cams (8) facing the front-end exposed surface (21) thereof, which in the engaged state transfer the force of the spring elements to the transmission bodies (3,9) and thus axially engage with the hub recesses (4).

Abstract: The invention relates to a linear brake (LBR) for attachment on a slide that can be moved along a guide rail (F), having a brake housing (1), which at least partially surrounds the guide rail (F), a force store arranged on or in the brake housing (1) and a brake piston (3), which is loaded by the force store, surrounds the guide rail (F) in a fork-like manner and is moved by the force store against the guide rail transversely to the movement direction between the slide and the guide rail (F). The brake piston presses the two clamp jaws (7), which are connected with a U-shaped transfer plate (6), against the guide rail (F) by means of piston bevels (3.2) and wedge bevels (5.1), which are arranged on both sides of the guide rail (F) and are opposite each other. The brake piston (3) is configured as a cylindrical annular piston, which is loaded on one end face by the force store (2) arranged centrally in the annular piston and has on the other end face the piston ends (3.6) with the bevel faces (3.2).

Abstract: The invention relates to a linear brake (LBR) for attachment on a slide that can be moved along a guide rail (F), having a brake housing (1), which at least partially surrounds the guide rail (F), a force store arranged on or in the brake housing (1) and a brake piston (3), which is loaded by the force store, surrounds the guide rail (F) in a fork-like manner and is moved by the force store against the guide rail transversely to the movement direction between the slide and the guide rail (F). The brake piston presses the two clamp jaws (7), which are connected with a U-shaped transfer plate (6), against the guide rail (F) by means of piston bevels (3.2) and wedge bevels (5.1), which are arranged on both sides of the guide rail (F) and are opposite each other. The brake piston (3) is configured as a cylindrical annular piston, which is loaded on one end face by the force store (2) arranged centrally in the annular piston and has on the other end face the piston ends (3.6) with the bevel faces (3.2).

Abstract: Disclosed is an electromagnetically released spring pressure brake that is to be mounted on a machine wall or similar. Said brake comprises a uniform rectangular coil support (1) with two preferably oval, adjacent coils (7, 7.1), to which two separately movable rectangular armature disks are assigned. Said armature disks apply pressure to a joint rotor encompassing two friction linings that are mounted on each side when the coils (7, 7.1) are de-energized. The rotor is axially movable on an axially toothed hub. Two respective fastening screws (9) are used for guiding each of the armature disks parallel along the central longitudinal axis (13, 13.1) thereof, on the radially largest possible diameter of the rotor. A manual lever (10) featuring manual releasing bolts is provided for each armature disk.

Abstract: A quiescent-current-actuated electromagnetic spring pressure brake including torque transmission sleeves disposed between a machine wall and the brake, and an axially movable armature plate having bores along its periphery to receive the torque transmission sleeves. At least one piston guide ring is provided in the area of torque transmission sleeves on the outer periphery of the latter adjacent an O-ring disposed in a groove, said piston guide ring being placed in the groove of said O-ring or in a separate groove and acting to provide a damping action in the circumferential direction and a sliding displacement of the armature plate in the axial direction.

Abstract: A torsionally rigid flexible shaft coupling, in particular, fully-steel shaft coupling, for transmitting torques between shafts, in particular shafts with axes which are offset relative to one another, having one or two plate packs (5) which are placed on flange sleeves (6) and on the latter, are clamped by means of a ring (4) against an end-side flange (65b) of the flange sleeve (6), wherein the plate packs are clamped in an alternating fashion in the peripheral direction to the sleeves (8) or second hubs (9), which face one another, by means of screws (7) which extend through the flange sleeves (6) and have nuts (2).

Abstract: An electromagnetically released spring-loaded brake for cooperation with a motor or similar, with the manual release of the brake being effected in a tangential direction by means of a manual release lever 9, and with actuation of the manual release lever 9 causing armature disc 3 to be urged towards coil carrier 1 via three or more transmission levers 10 mounting rolls 16 and camming surfaces 14 on armature disc 3. As a result, the width of the air gap between armature disc 3 and coil carrier 1 is reduced so that rotor 6 with its hub 4 will be free to rotate between friction linings 7 on armature disc 3 and flange plate 8. The object was to create a lockable manual release feature the actuation of which requires a low manual force on manual release lever 9, is very flat and compact in structure, has a relatively small diameter and is actuated in a tangentional direction (FIG. 1).

Abstract: The invention relates to an electromagnetically ventilating spring-pressure brake for mounting on the driving disk (15) or the driving disk shaft (16) of already existing elevators, which are operated with cables passing over a driving disk. The external-mounted brake (1) is situated concentric to the central axis of the driving disk (15) or driving disk shaft (16) on a separate base (23) of the structure on the free side (i.e. opposite the driving side) of the driving disk (15) and is fastened in a stationary and rotationally fixed manner. The rotor (5) of the brake (1) is connected in an essentially rotationally fixed manner to the free end of the driving disk (15) or of the driving disk shaft (16) in order to transmit the braking torque of the external-mounted brake to the driving disk (15).