摘要:
Subject-matter of this invention is a device for measuring angular microvariations, having a double pendulum construction comprising two vertical cylindrical legs (11, 12) connected to one another by a first transversal arm (13), having merely mechanical and structural function, and by a second transversal cylindrical arm (14), also acting as a housing for a LVDT transducer, wherein the upper ends of said two vertical legs (11, 12) are closed by means of rubber stoppers. A wire (15) is connected to said rubber stoppers by means of screws (20) and a respective block (16) is suspended therefrom. Said blocks (16) are partially immerged in a liquid material contained in two cups formed by end enlargements of said second transversal arm (14) and they are firmly interconnected by means of a rod (17) bearing the core (18) of the LVDT transducer. The device is equipped with a microprocessor based electronic system for detecting, processing and transmitting the measurement data.
摘要:
Fluid thrust bearing containing moving magnet indicating instrument (10) includes a bobbin (12) and transparent lens (14) through which pointer (16) and dial (18) can be viewed. Pointer (16) is mounted to end of shaft (20) having axis of revolution (28) and attached to rotor (30) in bore (34). The rotor (30) is disposed in close-fitting walled cavity (26) so as to define a small substantially air excluded damping fluid filled gap (32) therebetween. Shown near detail arrows (1A) are excess fluid containing reservoir (33) formed by raised torroidal ridges (36, 38). Indicator (10) contains two pairs of field coils (22.1, 22.2, 24.1, 24.2). Adhesion and cohesion help maintain the rotor (30) in cavity (26). The substantial air exclusion helps prevent rotor (30) from moving axially out of cavity (26). A method of assembling to create such conditions therein is also set forth.
摘要:
La présente invention concerne un logomètre, notamment pour tableau de bord de véhicule automobile, du type comprenant un arbre (16) guidé à rotation, un aimant (18) solidaire de l'arbre, une chambre (13) contenant un liquide d'amortissement et qui loge l'aimant (18), caractérisé par le fait que le liquide d'amortissement est formé de ferrofluide (20).
摘要:
Eine Vorrichtung zur Endlagendämpfung eines bewegten Systems, bestehend aus einem vom bewegten System beaufschlagten Kolben (10), der in einem Zylinder (11) axial verschieblich aufgenommen ist, einem im Bereich einer ersten Stirnseite (12) des Zylinders (11) vorgesehenen absperrbaren Hauptauslaß (13) für im vom Kolben (10) und vom Zylinder (11) umgrenzten Kolbenraum (14) enthaltenes Druckfluid, einem mit dem Hautauslaß (13) verbundenen Auslaßkanal (16), einem im Bereich der ersten Stirnseite (12) vorgesehenen Nebenauslaß (15) für das Druckfluid sowie einem den Nebenauslaß (15) mit dem Auslaßkanal (16) verbindenden Drosselventil (2). Das Ventilglied des Drosselventils (2) ist mit einem Regelkolben (21) verbunden, der in einem Regelzylinder (22) axial verschieblich aufgenommen ist und diesen in einen ersten Regelkolbenraum (23) und einen zweiten Regelkolbenraum (24) unterteilt. Eine Druckfluidverbindung (17) zwischen dem Nebenauslaß (15) und dem ersten Regelkolbenraum (23) ist weiterhin vorgesehen. Im zweiten Regelkolbenraum (24) ist eine in Richtung einer Volumenverringerung des ersten Regelkolbenraums (23) auf den Regelkolben (21) wirkende Krafterzeugungseinrichtung (30) vorgesehen.
摘要:
Fluid thrust bearing containing moving magnet indicating instrument (10) includes a bobbin (12) and transparent lens (14) through which pointer (16) and dial (18) can be viewed. Pointer (16) is mounted to end of shaft (20) having axis of revolution (28) and attached to rotor (30) in bore (34). The rotor (30) is disposed in close-fitting walled cavity (26) so as to define a small substantially air excluded damping fluid filled gap (32) therebetween. Shown near detail arrows (1A) are excess fluid containing reservoir (33) formed by raised torroidal ridges (36, 38). Indicator (10) contains two pairs of field coils (22.1, 22.2, 24.1, 24.2). Adhesion and cohesion help maintain the rotor (30) in cavity (26). The substantial air exclusion helps prevent rotor (30) from moving axially out of cavity (26). A method of assembling to create such conditions therein is also set forth.
摘要:
A movable magnet type measuring instrument capable of suppressing, with a reduced cost, the leakage of damper oil while reducing an effect on the operating characteristics of a needle, comprising a magnet rotor (2) having a rotating shaft (1), a frame body (4) having a hollow part (3) for storing the magnet rotor (2) and supporting the rotating shaft (1), coils (5, 6) disposed on the outer periphery of the frame body (4) and driving the magnet rotor (2), and damper oil (D) contained in the hollow part (3), wherein a rough surface part (S) for suppressing the movement of the damper oil (D) is provided on at least either of the outer wall surface (21) of the magnet rotor (2) and the inner wall surface (31) of the hollow part (3).
摘要:
Moving magnet indicating instruments in which a damping fluid migration barrier (74) projects from the inside of one wall of the bobbin coil (61) and another damping fluid migration barrier (68) projects from the face of the rotor (62) which confronts that wall.
摘要:
To provide a moving magnet type metering device that is cheap and can make an influence affecting on operation characteristics of an indicator smaller, and furthermore can suppress damper oil from leaking. The moving magnet type metering device includes a magnet rotor 2 having a turning shaft 1, a frame body 4 that has a cavity portion 3 for accommodating the magnet rotor 2 and supports the turning shaft 1, coils 5 and 6 that are disposed along an outer periphery of the frame body 4 and drive the magnet rotor 2, and damper oil D that is filled in the cavity portion 3. In the above, a rough surface portion S that suppresses the damper oil D from moving is disposed on at least one of an external surface 21 of the magnet rotor 2 or an internal surface 31 of the cavity portion 3.