RO133623A2 - Locking system - Google Patents

Abstract

The invention relates to a locking system made on the basis of two elastic elements, Nitinol, shape-memory material, meant to block doors and shutters, for the safety of buildings or installations. According to the invention, the locking system consists of two Nitinol springs (1 and 2), clamped, at one end, onto a fixed plate (3), and, at the other end, onto a mobile plate (4) which is integral with a locking element (5) the bidirectional movement of which, obtained by heating the springs (1 and 2), controls the position of two cams (6 and 7) by means of some guiding channels (8, 8' and 8'') guiding on some slots (9, 9' and 9'') and results in blocking or unblocking a mobile element (12).

Description

The invention relates to a locking system made on the basis of two elastic elements, Nitinol, a shape memory material, intended for locking doors and shutters, in order to ensure constructions or installations. The locking system, according to the invention, consists of two springs (1 and 2) of Nitinol, attached at one end of a fixed plate (3), and at the other end, of a movable plate (4) which shares a common body with a locking element (5) whose bidirectional displacement, obtained by heating the springs (1 and 2), controls the position of two cams (6 and 7) by means of channels (8, 8 'and 8) guiding on some grooves (9 , 9 'and 9) and leads to locking or unlocking of a movable element (12).

Claims: 2

Figures: 2

Fig. 1

Starting from the date of publication of the patent application, the application provides, provisionally, the applicant, the protection conferred according to the provisions of art.32 of Law no.64 / 1991, except in cases where the patent application has been rejected, withdrawn or considered as withdrawn, the extent of the protection conferred by the patent application is determined by the claims contained in the application published in accordance with article 23 paragraph (1) - (3).

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Patent application for the invention

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Latch system

The invention relates to a locking system made on the basis of two elastic elements of Nitinol (material with shape memory), intended to lock the doors, shutters in order to ensure constructions or installations.

for the purpose of creating a locking system, a solution is known (APOSTU, C. Locking device, Patent ROI08993, OSIM Bucharest), consisting mainly of a body, which has inside a lock and a mechanism for locking. locking, which is introduced by a housing from the mobile construction into a housing from the fixed construction, and when the seats are approximately coaxial its retention is secured by means of a ball that enters a clearance that can be found in the fixed construction or on mobile construction.

The disadvantages of the described solution are related to the complexity of the execution, which leads to the increase of the cost and the diminution of the operating safety.

The technical problems that the invention solves consist of the constructive simplicity of the locking system, as well as the increase of the precision with which the locking element is controlled.

The locking system, according to the invention, removes the disadvantages presented by the fact that it consists mainly of two elastic elements of Nitinol in the form of an arc, which controls an element that is inserted into a channel provided in the fixed construction, thus blocking it the mobile one.

The invention has the following advantages:

constructive simplicity;

safety in exploitation;

reduced gauge;

the ability to order from a distance.

LÎriwii'Îiţ '

Ste from 1ueta1 a 2018 00157

03/07/2018

The following is an example of an embodiment of the invention in relation to figure 1 and figure 2 which represents as follows:

- a side view of the latch system in the closed position;

- a side view of the latch system in the open position.

The locking system (fig. 1 and fig. 2), according to the invention, consists mainly of two Nitinol springs 1 and 2 connected at one end of the fixed plate 3, and at the other end of the movable plate 4 which makes the body common to the locking element 5, whose bidirectional axial displacement controlled by the Nitinol springs 1 and 2, controls the displacement of two cams 6 and 7 through the guide channels 8, 8 ', 8 "on grooves 9, 9', 9". The bed 7 is provided with a spring 10 supported at one end on the fixed plate 3, the spring having the role of pretensioning the drive system. In the locked position of the system, the Nitinol springs 1 and 2 feel tight, and the locking element 5 is positioned in the channel 11 provided in the movable locking element 12. To unlock the system, the Nitinol springs 1 and 2 are powered from the source. of direct current 13, voltage applied a certain time, through the adjustable timing circuit 14, sufficient time interval to heat by Joule effect the springs at a temperature that changes their elastic content to enable the locking element to be firmly actuated . The Nitinol springs are compressed, the locking element 5 moves the two cams 6 and 7, until the cam 7 exits the guide channels 8, 8 ', 8 ", and remains locked on the grooves 9, 9', 9" when cooling. springs, similar to a pen mechanism. The timing mechanism allows the manual connection time to be changed, by means of a switch 15 or by means of a temperature sensor that reads the ambient temperature and ensures the heating of the springs to the temperature required to obtain the switching. The locking system is restored to a locked position by a new feed order of the two springs with Nitinol 1 and 2, their compression and return (similar to a ball mechanism).

The locking system, according to the invention, can be reproduced with the same characteristics and performances whenever necessary, which is an argument in favor of respecting the criterion of industrial applicability.

Claims (2)

claims 1. Latching system characterized in that it consists mainly of two Nitinol springs (1) and (2) attached to one end of the fixed plate (3), and to the other end of the movable plate (4) which forms the body common to the locking element (5) whose bidirectional displacement controlled by the Nitinol springs (1) and (2), controls the movement of two cams (6) and (7), through the guide channels (8), (8 ') ), (8 ") on the grooves (9), (9 '), (9"); the entire drive system being pre-tensioned by means of the spring (10) attached to one end of the cam (7) and supported on the fixed plate (3). Latch system according to claim 1, characterized in that, in the locked position, the Nitinol springs (1) and (2) are secured, the latch element (5) is positioned in the channel (11) provided in the latch movable element ( 12), and to unlock the system, the Nitinol springs (1) and (2) are supplied with voltage from the DC source (13), voltage applied through the adjustable timing circuit (14) in sufficient time to make it is possible to firmly operate the latch element by heating the Joule effect with the springs and changing their elastic cash; the return to the locked position of the locking system is achieved, by a new control of supplying the two springs with Nitinol (1) and (2), similar to a pen mechanism.