WO2009012548A1

WO2009012548A1 - System for transforming translational into rotating movement

Info

Publication number: WO2009012548A1
Application number: PCT/BR2008/000212
Authority: WO
Inventors: Marcial Trilha Jr.
Original assignee: Trilha Marcial Jr
Priority date: 2007-07-20
Filing date: 2008-07-21
Publication date: 2009-01-29
Also published as: BRPI0702208A2

Abstract

This invention presents a new concept of system to promote the transformation of intermittent linear movements into incremental rotating movements, to be used in places where the work space is limited and the possibilities of actuation are restricted, as for example, in remote tubular environments.

Description

SYSTEM FOR TRANSFORMING TRANSLATIONS INTO ROTATING MOVEMENT

The present invention refers to a system capable of promoting the transformation of intermittent linear movements into incremental rotating movements, capable of being used in regions where the work area is limited and the activation possibilities are restricted.

This system has its major application when the desirable input is a rotating motion, and the point of acting is located at a remote place. This restricts the possible inputs. An example of this type of situation is the necessity of rotating motion imposition to mechanical systems which are acting inside tubular structures and far from the command place.

Being sufficiently compact, the system presented herein is particularly applicable where there are great limitations of space or rotating actuators could not be used.

Systems as presented in patents US387042, US1332378, US2905147, US2928374, US3064624, US3075497, US3137276, US3144005, US3191329,

US3288115, US3510977, US3792931, US4991988 e US5997204, were used for purposes of: promoting the exposition of the ballpoint pen tips, activation of electric contacts and pen displays. They are all activated by compression and have as objective the maintenance of some element in its structure in two positions defined as backward and forward.

The invention presented herein allows that from the translational traction driving, given in an intermittent way, it is possible to obtain incremental rotating motion, being an increment for each pulse of the translational driving. The present invention will be duly understood by the following description and its associated figures, which are illustrative and not limiting, the reason why obvious modifications may be made by those skilled in the art.

The object of the present invention is a system for transforming translational into rotating movement comprising:

I) a grooved member substantially cylindrical with ribs on the outer diameter; II) a grooved member substantially cylindrical with a hole substantially central with ribs;

III) a member substantially cylindrical hollowed with internal ribs;

IV) at least one elastic element for compression; and

V) a plurality of supporting members, optionally lids, rigidly connected to the member cited in step (III).

Figure 1 shows a simplified model of the system for the transformation of intermittent linear movement into incremental rotating movement, wherein said capsule is composed by: (01) rear support lid, (05) body and (06) front support lid. It is also possible to verify other basic components as: (02) main ratchet, (03) rear elastic element, (04) secondary ratchet and (07) front elastic element.

Figure 2 shows the secondary ratchet in detail, wherein (08) is the seat of the front elastic element, (09) is the diameter of positioning and centralization, (10) shows one of the guide channels of the secondary ratchet, (11) is the support surface, (12) shows one of the teeth of the secondary ratchet and (13) is the hole where the main ratchet shaft passes through.

Figure 3 presents the main ratchet in detail, wherein (18) is the rear portion of the shaft, (15) is the front portion of the shaft, (14) is the detail for the rotating movement transmission, (19) is the front elastic element seat, (17) is a surface for centralization and positioning and (16) indicates one of the main ratchet teeth.

Figure 4 shows the capsule member, wherein (20) is the rear support lid groove, (21) is a centralization surface of the main ratchet, (22) points to one of the teeth of the capsule member, (23) points to one of the capsule member guide channels, (24) is the seat of the front support lid and (25) is a secondary ratchet centralization surface.

Figure 5 presents the front support lid in detail, where: (26) is the lid groove, (27) is the front elastic element seat and (28) is the passage hole and centralization of the main ratchet shaft.

Figure 6 presents the rear lid in detail, where: (29) is the rear elastic element seat, (30) is the lid groove and (31) is the passage hole and centralization of the main ratchet shaft.

As exemplified by the above cited figures, the system presented herein is composed by at least two ratchets (02) (04), at least two compression elastic elements (03) (07) and at least one capsule (01) (05) (06).

Initially the ratchets (02) (04) are compressed one against the other by action of the compression elastic elements (03) (07), being the rear elastic element supported on the surfaces (29) and (19), and the front elastic element supported on the surfaces (27) and (08). The secondary ratchet (04) is coupled to the capsule body (05) by the guide channels (10) (23) and centralized to the capsule body (05) by the surfaces (08), (11), (25) and (21). In this same initial configuration the main ratchet is centralized to the capsule body (05) by the surfaces (17), (17) and (21), and centralized to the secondary ratchet by the surfaces (15) and (13), having their teeth (16) supported on the capsule body teeth (22). The intermittent linear driving is applied to the rear portion of the shaft of the main ratchet, being this driving a front/back traction strength or a front/back displacement, being the capsule inertial.

With the application of the main ratchet shaft driving, this moves back from its initial position allowing that the secondary ratchet (04) moves back too, pushed by the front elastic element (07).

In this moment, the secondary ratchet teeth (12) promote the compression of the main ratchet teeth sides (16) over the capsule body guide channel sides (23).

When the amplitude of driving movement meets sufficient value to take off the main ratchet teeth (16) from inside of the capsule body guide channels (23), is permitted to the main ratchet to realize a small rotation, with the influence of the secondary ratchet teeth (12). In this situation, the teeth surfaces of main ratchet and of the capsule body are no more coincident.

With the stop of the linear driving, the main ratchet (02), pushed by the rear elastic element (03) make a back/front movement, sliding on the subsequent teeth of the capsule body (22), keeping their teeth located again in the capsule body guide channels.

In this manner, at each actuation pulse, the main ratchet makes a rotation twist step equivalent to a complete twist divided by the capsule body teeth number.

The rotating movement transmission is realized by the front portion of main ratchet shaft, which pass through the interior of the secondary ratchet and leaves by the capsule front support Hd. This shaft has a detail (14) which enables the transmission of rotating movement and the non-transmission of linear movement given to the main ratchet.

The torque generated is dependent on the resulting from the forces of elastic elements, on the number of ratchet teeth and on the angles of teeth surfaces.

It should be clarified that the elastic elements mentioned along the present invention may be selected from a spring or other flexible element. Preferably the elastic element is a spring.

Claims

1) System for transforming translational into rotating movement comprising: I) a grooved member substantially cylindrical with ribs on the outer diameter;

II) a grooved member substantially cylindrical with a hole substantially central with ribs;

III) a member substantially cylindrical hollowed with internal ribs;

IV) at least one elastic element for compression; and V) a plurality of supporting members, optionally lids, rigidly connected to the member cited in step (III).

2) System for transforming translational into rotating movement according to claim 1 comprising a member substantially cylindrical which rotates in an incremental way when driven in translational way.

3) System for transforming translational into rotating movement according to claim 1 comprising a grooved member substantially cylindrical with a hole substantially central containing ribs and radially inclined teeth.

4) System for transforming translational into rotating movement according to claim 1 comprising a grooved member substantially cylindrical with ribs on the outer diameter where said ribs have inclined extremities.

5) System for transforming translational into rotating movement according to claim 1 comprising a member substantially cylindrical hollowed with internal ribs where said ribs have inclined extremities.

6) System for transforming translational into rotating movement according to claim 1 comprising a movement reducer.

7) The system according to claim 1 wherein the at least one elastic element is spring.

8) The system according to claim 1 and 7 having two springs.