Abstract:
A door closer or operator includes a pivoting pinion on the door closer housing for transmitting door motion, and a cam connected thereto. A connecting member extends along a spring and engages the peripheral edge of the cam. Rotation of the cam causes a change in length of the portion of the connecting member between the position tangent to the cam peripheral edge and the spring second end to expand or compress the spring, resulting in a force transmitted along a longitudinal axis of the connecting member as a result of spring deflection. The cam peripheral edge has a profile with a varying radial distance between the cam axis and the connecting member at the position tangent to the cam peripheral edge such that the radial distance is changed as the spring expands or compresses to maintain a desired constant torque about the axis of the cam and pinion.
Abstract:
Ein Türantrieb (10), insbesondere Drehtürantrieb, umfasst ein Gehäuse (12), eine mit einem Türflügel oder einem Blendrahmen koppelbare Abtriebsachse (18), einen Motor (20) zum Antreiben der Abtriebsachse (18) und eine Federeinheit (22), die während einer jeweiligen Öffnungsbewegung des Türflügels gespannt wird und sich während einer jeweiligen Schließbewegung des Türflügels entspannt, wobei die Abtriebsachse (18) über eine Zahnstange (28) durch den Motor (20) antreibbar ist und die Federeinheit (22) einerseits an der Zahnstange (28) und andererseits über einen Anschlag (30) am Gehäuse (12) abgestützt ist, der zur Einstellung der Federkraft der Federeinheit (22) relativ zum Gehäuse (12) verstellbar ist.
Abstract:
Ein Kamin- oder Kachelofen oder Kamineinsatz mit einer durch eine Tür (1) verschließbaren Beschickungsöffnung sowie einem mit der Tür (1) in Wirkverbindung stehenden Energiespeicher, ist so ausgebildet, dass ein mit der Tür (1) und/oder dem Energiespeicher in Eingriff stehendes Getriebe (8) mit sich bei einer Bewegung der Tür (1) stufenlos verändernden Übersetzung vorgesehen ist.
Abstract:
Die Erfindung betrifft ein Tor (10) mit einem zum Öffnen und Verschließen einer Gebäudeöffnung (14) bewegbaren Verschlusselement (16, 18) und einer Torwelle (12), die mit dem Verschlusselement (16, 18) zur gemeinsamen Bewegung gekoppelt ist und mit einer an der Torwelle (12) angreifenden Gewichtsausgleichseinrichtung (28), die wenigstens ein Federelement (30) aufweist, das bei Drehung der Torwelle (12) in einer ersten Richtung spannbar und bei Drehung der Torwelle (12) in einer zweiten Richtung entlastbar ist. Um ein solches Tor, insbesondere Rolltor, derart auszubilden, dass es sich unter Einhaltung sicherheitstechnischen Standards auch für automatischen Betrieb besonders einfach und kostengünstig aufbauen lässt, wird vorgeschlagen, dass das wenigstens eine Federelement (30) wenigstens eine Zugfeder (32, 34) aufweist. Außerdem wird eine vorteilhafte Antriebsvorrichtung (26) hierfür angegeben.
Abstract:
The invention relates to a piece of furniture comprising a body (1) and at least one flap (2) that can be upwardly displaced by means of at least one actuating arm (3) which is joined to the flap in an articulated manner and can preferably be pivoted about a horizontal axis. At least one actuating arm (3) is subjected to the action of a spring device (4), and at least one electric drive (5) acts on at least one actuating arm (3, 3'). A coupling device (40) acts between the electric drive (5) and the actuating arm (3), said coupling device having a free wheel for freely displacing the actuating arm (3) into an open position and/or a closed position, in at least one rotary direction over a defined angular region.
Abstract:
A mechanism and method for operating a track-mounted door is disclosed. The mechanism includes a pair of side drums that are connected by first cables to the bottom of the door. The side drums are coaxially mounted on a shaft for simultaneous rotation with a pair of cable drums. The cable drums are connected to high pressure gas struts by second cables. Each second cable is carried around a shiv wheel that slides along a guide track as the second cable moves. Each shiv wheel is operatively connected to one of the gas struts. As the shiv wheel moves along the guide track toward the cable drum, the gas strut is charged. As the shiv wheel moves away from the cable drum, the gas strut is discharged. A standard electric motor and screw driven lift-arm is used to initiate the opening and closing of the door. The charged gas strut stores sufficient energy to overcome friction and gravity to assist the electric motor and lift-arm to open the door.
Abstract:
The invention relates to a drive unit for automatically actuating a vehicle door, especially the tailgate of a motor vehicle. The inventive drive unit (4) can be connected to the vehicle door (1) or a transmission device (6) via an output shaft (5), said transmission device (6) performing a pivoting movement that corresponds to the pivoting movement of the vehicle door (1). The drive unit (4) comprises at least one first sensor unit (7) that can be connected to an electronic evaluation unit (21) and detects the respective angular position of the vehicle door (1). The aim of the invention is to make use of the advantages of an incremental measurement of the position of the vehicle door (1) without having to wait for the vehicle door (1) to reach its final position to be able to recalibrate following a power outage. Said aim is achieved by dividing the entire pivot angle (α) of the vehicle door (1) into at least three successive zones (pivot angle ranges) (α1-α4), the individual pivot angle ranges (α1-α4) being determined by a first sensor unit (7) that detects absolute values. The pivot angle of the vehicle door within the individual zones (α1-α4) is then detected with the aid of a second sensor unit (8) which encompasses at least one incremental measuring transducer.
Abstract:
The invention relates to a sliding rail door-closing device (1) having an eccentrically positioned pinion (6) comprising a circular working curve. Said pinion intermeshes with a toothed rack (5) arranged on a piston (4). The aim of the invention is to design the working curve and the teeth (9) of the toothed rack (5) in such a way that they are adapted to a toothing of the pinion (6). In order to optimise the movement sequence of the piston (4) in the housing (2) of the sliding rail door-closing device (1), the invention further relates to an improved embodiment of the closing delay.