Abstract:
A system for controlling at least two castors (1) in a castor control system (28) is provided. The castor comprises a brake activator (7) which can be used to set the castor (1) in three different positions: directional lock, neutral or braked. The brake activator (7) can be operated manually, e.g. by foot, or via a servo motor assembly (14) having a servo motor connected to the brake activator of the castor. The servo motor assembly further comprises a printed circuit board (16), a microprocessor (17) and at least one switch (19,20) connected to the brake activator (7). The servo motor assembly can further comprise a motion sensor (18). The servo motor assembly of each castor is connected to an electric brake controller (33) of the castor control system. The castors can be operated from an operating panel (37) of the castor control system (28). If the brake activator (7) of one castor is manually operated, the electric brake controller (33) can be set to let one or more of the other castors of the system assume the same position. The system can also set all castors (1) in the braked position if the motion sensor (18) detects motion of the castors (1) and the system is connected to mains voltage (40).
Abstract:
To provide a holding brake for a hospital bed which can be applied and released by foot operation in the same direction, in a rod system with an actuating lever (9) and a switching shaft (4) which is shifted in a rotary movement by the actuating lever (9) and via which the castor (1) is locked by a brake block or released, the selector shaft (4) has two rocking lever arms (15, 16) projecting from the switching shaft (4) and an actuating slide (12) operated by the actuating lever (9) is non-positively engaged alternately with the rocking lever arms (15, 16). In an alternative system there is a switching shaft with a switching cam the periphery of which has identical switching slides in one peripheral direction evenly distributed around it to move a push-rod axially to lock the castor by means of a brake block or release it, the switching shaft being, for each actuation of the lever, rotated in the same direction by half the periphery.
Abstract:
Die Erfindung betrifft eine Laufrolle (1) mit vorzugsweise zwei Rädern (2) und einer Feststellvorrichtung, wobei die Feststellvorrichtung von einem Beaufschlagungsteil (10) zum Lösen oder Festsetzen beaufschlagt ist und das Beaufschlagungsteil (10) durch einen Antrieb bewegbar ist, wobei eine durch den Antrieb erzeugte Bewegung eines Übertragungsteils (7) über Federkraft zur Bewegung des Beaufschlagungsteils (10) auf dieses übertragen wird, und wobei eine Feder (8) an dem Übertragungsteil abgestützt ist. Um eine Laufrolle anzugeben, die einen günstigen konstruktiven Aufbau ermöglicht, wird vorgeschlagen, dass ein für die Feder (8) und/ oder die Feder (9) und/ oder die Druckfeder (44) an dem Beaufschlagungsteil (10) ausgebildeter Abstützbereich von dem Übertragungsteil (7) durchfahrbar ist.
Abstract:
A castor for shopping and hospital trolleys which provides enhanced steering and manoeuvrability of the trolley, wherein a fork (13) of the castor is freely rotatable on a first bearing (15) with respect to a first member (16) connected to the fork (13), while the first member (16) is also freely rotatable on a second bearing (20) with respect to a second member (21) connected to the first member by a bolt (17). The second member may be connected to a frame or chassis (24) of a load bearing object such as a trolley.
Abstract:
The present invention relates to a hospital bed having a frame (1) with two articulated pairs of wheels (9), between which is arranged an articulated or non-articulated pair of wheels (2). The invention is characterized in that the intermediate pair of wheels (2) is spring-supported (4) at the frame (1) in order to facilitate transport of the bed from place to place.
Abstract:
The invention relates to a steering castor unit intended primarily for hospital beds. The steering castor unit has a bearer (10) with two castors (14) fitted on a common axle and a hollow shaft (18) fitted on the bearer to pivot about a vertical axis. In the hollow shaft (18) there is an axially movable control rod (26) by means of which, by adjustment on a cam disc (28), the rotary movement of the castors (14) and the swivelling movement of the hollow shaft (18) may be locked or freed together or the running direction of the castors (14) in relation to the hollow shaft (18) can be blocked in a predetermined straight-ahead direction. In order to ensure a stable bearing arrangement for the hollow shaft (18) with properly designed force transmission and reliable operation in all circumstances, the control rod (26) is a pushrod, while the hollow shaft (18) bears a control ring (56), secured in rotation to the hollow shaft (18) and axially movable to a limited extent against the force of a spring (40) acting towards the cam disc (28). On its side facing the cam disc (28), the control ring has an anti-pivoting pawl (58) which can engage in a recess (60) in the bearer and on its side opposite the pawl (58) it has a peripheral conical control surface (88). On the bearer (10) there is a locking lever (68) actuatable via the control surface (88) of the control ring (56) having a locking member (76, 87) on each of its lever arms, one of which can be engaged with a locking drum (82) integral with the castor and the other with a locking drum (52) integral with the hollow shaft at the same time.
Abstract:
Described is a steering unit (1) for conveying devices on wheels such as beds, stretchers or trolleys comprising a wheel unit (2) and a motor unit (3). The wheel unit (2) comprises a base structure (4) and a wheel (9) mounted on a supporting element (10) in such a way as to rotate about a relative axis of rotation (11). The supporting element (10) is mounted on the base structure (12) in such a way as to rotate about an orientation axis (12). Transmission means comprise at least an inlet unit and an outlet shaft (16). The inlet unit (15) comprises engagement means designed to reversibly engage the inlet unit on a transmission unit (27) of the motor unit (3). The outlet shaft (16) is integral with the supporting element (10) and defines the orientation axis (12). The transmission means are configured for transforming an inlet motion of the inlet unit (15) into an outlet rotation of the outlet shaft (16) about the orientation axis (12). A motor (26) provided with the transmission unit (27) comprises complementary engagement means designed to operate in conjunction with the engagement means of the inlet unit for reversibly engaging the inlet unit on the transmission unit.
Abstract:
A castor control system for controlling at least two castors in a castor control system is provided. The castors comprise an electric motor which can be used to set the castor in three different positions: directional lock, neutral or braked. The castors can be operated individually from an operating panel of the castor control system. The system can also set all castors in the braked position if a motion sensor of the castor control system detects motion and the castor control system is connected to mains voltage.
Abstract:
A stretcher (10) includes a brake mechanism (56) and a steer mechanism operated by side actuator pedals (48, 50) and a brake-actuating bar (52) and a wheel-actuating bar (54). The brake-actuating bar (52), wheel-actuating bar (54), and side actuator pedals (48, 50) are connected such that movement is coordinated.