ACTUATOR FOR ROTATORY MOVEMENT DRIVEN BY HYDRAULIC OR PNEUMATIC FLUID

Abstract: It is described an actuator driven by a diaphragm (7), contained in a body (2), that when pressurised by a fluid, acts directly on a flapped axis (4), forcing it to move angularly, yielding a rotation transmitted to a part or equipment to which is coupled, being possible the return to initial neuter position, to be effected by the pressurisation of a second diaphragm placed in the same body, or means of a spring.

Description: Descriptive report of an invention patent of "Actua tor for Rotatory movemen t driven by hydrauli c or pneumatic fluid". The invention herein refers to an actuator, driven hyάrauiically or pneumatically, aiming on yield a rotation movement in a part or equipment. The actuator is characterised for possessing a flexible diaphragm, contained inside a body where, when pressurised by a fluid, the diaphragm acts directly upon a flap attached to an axis, forcing it dislocate angularly, rotating and transmitting this movement to the part or equipment when operated. The systei.i of the presented actuator possesses an advantage, turning it different from the others, for it possesses a diaphragm acting directly on the flapped axis, dismissing mechanisms that transform the diaphragm dislocation into rotation of the actuator axis, being consequently its construction more economical and simple. The actuator, according to the invention herein, was developed with th= finality to transmit a rotation _τ.ove-.=nc to a part cr equipment, as for example, valves, where frequently iε necessary to act "at distance" through ti:c use of pressurised fluid. - - The actuator now analysed, may be used with the most different parts or equipments, being sufficient that the axis end and its attaching systems bear the necessary adaptations as to their coupling to the part or equipment to be operated. The return of the axis angular movement to its initial neuter position, may be accomplished by using a second diaphragm installed in the body inner part or by means of the distortion of an elastic part, for example, a spring. The invention herein may be more easily understood in the following description, read together with the annexed sketches, in which: Figure 1 represents an actuator lateral plane view in neuter position. Figure 2 represents an actuator frontal plane view in neuter position. Figure 3 represents an actuator superior plane view in neuter position. Figure 4 represents an actuator superior plane view in operated position. Figure 5 represents an actuator section AA' view in neuter position. Figure 6 represents an actuator section AA' view when operated. Figure 7 represents a section view with the actuator in neuter position with the return accomplished by the action of a second diaphragm. Figure 8 represents an actuator lateral plane view with spring return, when operated. Figure 9 represents an actuator superior plane view with spring return, when operated. In the diverse figures of annexed sketches, the identical reference numbers represent similar actuator parts, of the one being analysed now. As we may see from the annexed sketches and first in reference to Figure 1, it is drawn the actuator seen laterally, in which is observed the bisectional central part (1) and the lids (2) attached to it by screws (6) , composing a body. In the central part (1) passes the flapped axis (4) containing in its superior end the course limiter (5) and which inferior end will transmit the rotation movement to the part or equipment to be operated. The diaphragm (7} is attached between the lid (2) and the central part (1) by means of screws (6) and nuts (3) . - A - On the lid it may be observed a connection (9) where the pressurised fluid will be insufflated. The central part (1) besides being used as bearing for the flapped axis (4) and possessing the stop (8) has the inferior part in the form of a flange to attach the actuator to the part or equipment to be operated. In Figure 2, with actuator frontally seen, we may observe the central part (1) , the lid (2) , the flapped axis (4) , the diaphragm outer part (7) , the insufflation connection (9), the course limiter (5), the stop (8) and the screws (6) . In Figure 3 it is observed the central part (1) , the flapped axis (4) , with the course limiter (5) , the screws (6) and the nuts (3) , the insufflation connection (9) , the diaphragm outer part (7) and the stop end course (8) . In Figure 4, we observe the flapped axis (4) when operating, in such way that the course limiter (5) is next to the stop (8) . In Figure 5, in an actuator section AA' , in a none operated position, it is observed the central part (1) , the none pressurised diaphragm (7) , the lids (2) with attaching screws (6) , the nuts (3) and the flapped axis (4) . As we may observe in Figure 6, a section from the actuator, the diaphragm (7) , when pressurised by means of a fluid through the insufflation connection (9) exerts a pressure on the flapped axis (4) pressing this to dislocate angularly, rotating up to the solydary course limiter (5) of the flapped axis(4) , until reaches close to the stop(8) . As the flapped axis (4) in its inferior end will be coupled to the part a equipment to be operated, whenever the diaphragm (7) is pressurised, it will rotate the flapped axis (4) exerting the aimed objective. The flapped axis return (4) to the initial neuter position (not operating) may be reached, as seen in Figure 7, by means of a second diaphragm (10) , placed in the same body, however, in the flapped axis opposite side (4) , in relation to the first diaphragm (7) . Consequently, whenever the diaphragm (10) is pressurised, taking away the insufflation of the diaphragm (7) , simultaneously, it will force flapped axis (4) to return to its initial neuter position. The return to neuter position may be also reached according to what is seen in Figure 8 and , by means of a spring (11) for the course limiter (5) when rotates led by the flapped axis (4) , when the diaphragm is pressurised, yields a distortion in the spring (11) , which accumulated energy will force, when the diaphragm is depressurised (7) , the course limiter (5) and consequently the flapped axis (4) , to return to initial neuter position. The actuator may have its operating power, torque, variable, according to the insufflated fluid pressure or varying the actuator dimensions. The fluid insufflation may be controlled mechanically, pneumatically or electrically, this without implying in any alteration in the actuator working principle. This system now analysis, may be constructed according to other specific orms, without representing a dissidence in its spirit or basic characteristics, as for example, the flap may be given a roller (s) aimed to diminish the friction with the diaphragm during its rotation movement. The submitted structure must be considered in every aspect, always taking into account its illustrative aspect and not restrictive, being better represented by the following claims, than by the submitted description and, therefore, comprehending all modifications that do not disfigure it.

Claims: Claims 1. "ACTUATOR FOR ROTATORY MOVEMENT DRIVEN BY HYDRAULIC OR PNEUMATIC FLUID" - aimed to yield a rotation movement to a part or equipment to which is coupled, characterised by possessing a body, in which inner part, a diaphragm (7) when pressurised by a fluid, acts directly on a flapped axis (4) , forcing it to rotate, transmitting this movement to the part or equipment to be operated. 2. "ACTUATOR FOR ROTATORY MOVEMENT DRIVEN BY HYDRAULIC OR PNEUMATIC FLUID" - according to claim 1, characterised by possessing a flapped axis (4) , that after being operated by the diaphragm (7) , may return to initial neuter position by means of a pressurisation of a second diaphragm (10) set in the same body interior . 3. "ACTUATOR FOR ROTATORY MOVEMENT DRIVEN BY HYDRAULIC OR PNEUMATIC FLUID" - according to claim 1, characterised by possessing a flapped axis (4) , that after being operated by the diaphragm (7) , may return to initial neuter position by the action of a spring (11) .

Inventors: KEISERMAN JUAREZ, KEISERMAN, JUAREZ
Applicants: KEISERMAN JUAREZ, KEISERMAN, JUAREZ
Application year: 1993
Main classification: F15B15
IPC codes: F15B15