초록 ▼

The device comprises a base element (1) and a movable element (8). Three control arms (4) are rigidly mounted at their first extremity (15) on three shafts (2) which may be rotated. The three assemblies each formed by a shaft (2) and an arm (4) are the movable parts of three actuators (13) of which

The device comprises a base element (1) and a movable element (8). Three control arms (4) are rigidly mounted at their first extremity (15) on three shafts (2) which may be rotated. The three assemblies each formed by a shaft (2) and an arm (4) are the movable parts of three actuators (13) of which the fixed parts (3) are integral with the base element. The other extremity (16) of each control arm is made integral with the movable element through two linking bars (5a, 5b) hingedly mounted on the one hand to the second extremity (16) of the control arm and, on the other hand, to the movable element. The inclination and the orientation in space of the movable element remain unchanged, whatever the motions of the three control arms may be. The movable element supports a working element (9) of which the rotation is controlled by a fixed motor (11) situated on the base element. A telescopic arm (14) connects the motor to the working element.

대표청구항 ▼

A device for the movement and positioning of an element in space, comprising: at least one base member; at least one movable member; at least three actuators, each actuator comprising a fixed portion, substantially immovably fixed on the base member, and a moving portion having a single degree of fr

A device for the movement and positioning of an element in space, comprising: at least one base member; at least one movable member; at least three actuators, each actuator comprising a fixed portion, substantially immovably fixed on the base member, and a moving portion having a single degree of freedom with respect to said fixed portion; and means fixing in space the inclination and orientation of the movable member with respect to the base member for all motions of the moving portions of the actuators, said fixing means comprising at least three linking means respectively connecting the moving portion of each actuator to the movable member, each of the linking means having a first end mounted by articulation onto the moving portion of its respective actuator and a second end mounted by articulation onto the movable member, the device providing two and only two degrees of freedom between the first end of each linking means and the moving portion of its respective actuator, the device providing two and only two degrees of freedom between the second end of each linking means and the movable member.