Rotary actuator
AssigneeKonan Electric Co., Ltd.
InventorsToshio Himeno, Hitoshi Shimizu, Satoshi Shinkai
Life of this patent
Estimating the term…
Abstract
A rotary actuator for converting a linear reciprocatory movement of a piston into a rotary reciprocatory movement of an output shaft through a connecting member. The rotary actuator includes a cylinder case formed with a pedestal in a position in which the output shaft extends vertically out of the cylinder case. The pedestal is formed with a substantially square elevated portion, and a depressed portion defined by the elevated portion. A plurality of projections spaced apart from each other by a predetermined angle are formed integrally with the pedestal in the depressed portion to constitute dividing lines of a scale for indicating the angle of rotation of the output shaft by means of a pointer.
Claims6
A rotary actuator comprising
- a piston;
- a cylinder case having a center axis for containing said piston for reciprocatory sliding movement;
- an output shaft having a center axis rotatably supported by said cylinder case and extending in a direction perpendicular to the center axis of the cylinder case;
- and
- a connecting member connecting said piston to said output shaft for converting a reciprocatory linear movement of the piston into a reciprocatory rotary movement of the output shaft;
- wherein the improvement comprises:
- a pedestal extending outwardly from support portions of the cylinder case for supporting the output shaft at a free end thereof, said pedestal being formed with a substantially square elevated portion defining a depressed portion, and a plurality of projections constituting dividing lines of a scale which are formed integrally with the pedestal at the depressed portion, said projections being spaced apart from each other by a predetermined angle and located symmetrically on the left and right with respect to a plane extending through the center axis of the output shaft and perpendicular to the center axis of the cylinder case, a pointer being attached to the output shaft and an attaching position of said pointer relative to said output shaft being able to be changed by a predetermined angle.
A rotary actuator comprising:
- a piston;
- a cylinder case having a center axis for containing said piston for reciprocatory sliding movement;
- an output shaft rotatably supported by said cylinder case and extending in a direction perpendicular to the center axis of the cylinder case;
- and
- a connecting member connecting said piston to said output shaft for converting a reciprocatory linear movement of the piston into a reciprocatory rotary movement of the output shaft;
- wherein the improvement comprises:
- a pedestal extending outwardly from support portions of the cylinder case for supporting the output shaft at a free end thereof, said pedestal having a bracket detachably attached thereto by bolts, said bracket including a base for securing the bracket to the pedestal, and a seat formed integrally with the base, said base and seat being formed with a bore extending therethrough for receiving said output shaft, said seat being formed with internally threaded openings for threadably receiving a machine or instrument attached to the seat, and ports located in positions suitable for supplying a working fluid to the machine or instrument, said ports being connected with channels having connecting ports at the sides of said base.
A rotary actuator comprising:
- a piston:
- a cylinder case having a center axis for containing said portion for reciprocatory sliding movement;
- an output shaft having a center axis rotatably supported by said cylinder case and extending in a direction perpendicular to the center axis of the cylinder case;
- a connecting member connecting said piston to said output shaft for converting reciprocatory linear movement of the piston into a reciprocatory rotary movement of the output shaft;
- wherein the improvement comprises:
- a mount formed at least at one side of the cylinder case integrally therewith;
- a plurality of openings formed in said mount and serving as suction and discharge ports respectively for a fluid;
- and
- a plurality of channels defined in a main body, each of said plurality of channels communicating one of said plurality of openings with one of a plurality of chambers formed at end portions of the cylinder case.
Dependencies are inferred from the claim text.