Abrégé

Ortho-planar spring (100, 110, 120, 130, 140, 150), comprising a frame (10) and a shuttle (20) that is perpendicularly movable with respect to the frame (10), wherein flexible members (1, 2, 3) connect the shuttle (20) to the frame (10), and wherein in an unloaded condition the frame (10), the flexible members (1, 2, 3) and the shuttle (20) provide the spring with a flat configuration, characterized in that wherein the spring is stressed into a non-flat configuration by arranging that at least a first transitional area (la) connecting the frame (10) and a flexible member (1) and/or at least a second transitional area (lb) connecting a flexible member (1) and the shuttle (20), are moved out of the flat configuration and fixated between a lower assembly element (31, 37) and an upper assembly element (32, 36), wherein the lower assembly element (31, 37) and the upper assembly element (32, 36) have correspondingly shaped surfaces that engage the ortho-planar spring on opposite sides of said spring to fix the first and second transitional areas (la, lb) under a predefined angle and/or a predefined displacement with reference to the flat configuration.

Classes IPC  ?

• F16F 1/02 - Ressorts en acier ou faits d'un autre matériau ayant une faible friction intérieureRessorts enroulés, de torsion, à lame, en forme de coupelles, à corps annulaire ou similaire, le matériau de ressort ne jouant pas de rôle
• F16F 1/32 - Ressorts en forme de coupellesRessorts en forme de disques légèrement concaves

Abrégé

A compliant constant velocity constant torque universal joint to transmit a rotary movement between two angled shafts, and/or a kinematic pair with two independent rotational degrees of freedom. This compliant structure is a large deflection compliant joint and the misalignment angle can be changed through the range of from 0° to 60°. The mechanism includes at least three compliant or statically balanced compliant spatial 4R (four revolute joint) linkages connected between two shafts, each system including four compliant joint axes and three rigid or compliant link members. The joint axes in each system are mounted so that each axis intersects one other joint axis. The compliant system is symmetrical about a plane which bisects two shaft axes perpendicularly.

Classes IPC  ?

• F16D 3/30 - Joints de Hooke ou autres joints avec organe intermédiaire équivalent auquel chaque pièce d'accouplement est reliée par pivot ou par glissement dans lesquels l'accouplement est spécialement adapté pour fournir un rapport de vitesse constant