EP3536880A1 - Interlocking system - Google Patents

Interlocking system Download PDF

Info

Publication number
EP3536880A1
EP3536880A1 EP19464001.7A EP19464001A EP3536880A1 EP 3536880 A1 EP3536880 A1 EP 3536880A1 EP 19464001 A EP19464001 A EP 19464001A EP 3536880 A1 EP3536880 A1 EP 3536880A1
Authority
EP
European Patent Office
Prior art keywords
springs
nitinol
locking element
interlocking system
interlocking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19464001.7A
Other languages
German (de)
French (fr)
Other versions
EP3536880B1 (en
Inventor
Ilie NITAN
DAN Laurentiu Milici
Mihaela Poienar
Dumitru Cernusca
Sergiu Dan Pata
Alexei Pianîh
Radu Dumitru Pentiuc
Cezar Dumitru Popa
Mihai RATA
Constantin Ungureanu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universitatea Stefan Cel Mare din Suceava
Original Assignee
Universitatea Stefan Cel Mare din Suceava
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universitatea Stefan Cel Mare din Suceava filed Critical Universitatea Stefan Cel Mare din Suceava
Publication of EP3536880A1 publication Critical patent/EP3536880A1/en
Application granted granted Critical
Publication of EP3536880B1 publication Critical patent/EP3536880B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0009—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with thermo-electric actuators, e.g. heated bimetals

Definitions

  • the invention relates to an interlocking system made on the basis of two Nitinol elastic elements (shape-memory material), intended to lock doors, shutters in order to secure constructions or installations.
  • APOSTU C. Dispozitiv de blocare, Invention Patent RO108993 , OSIM inclusive
  • a solution consisting mainly of a housing, which has a latch and a locking mechanism, and which is inserted through a bezel from the mobile construction into a bezel from the fixed constructione, and when the bezels are approximately coaxial, its retention is provided by means of a ball that enters a recess that can be found in the fixed structure or on mobile construction.
  • the interlocking system removes the disadvantages represented by the fact that it consists essentially of two elastic elements from Nitinol modelled as springs which control an element that is inserted into a channel provided in the fixed structure, thus blocking it the mobile one.
  • the interlocking system ( figure 1 and figure 2 ) consists essentially of two Nitinol springs 1 and 2 attached at one end of the fixed plate 3 and at the other end of the movable plate 4 which is one with the locking element 5, whose bi-directional axial displacement commanded by the Nitinol springs 1 and 2, controls the movement of two cams 6 and 7 by means of the slot guides 8, 8', 8' 'on the grooves 9, 9', 9 ".
  • the cam 7 is provided with a spring 10 supported at one end on the fixed plate 3, which is designed to achieve the pretension of the drive system.
  • the Nitinol springs 1 and 2 are unstrained and the locking element 5 is positioned in the channel 11 provided in the movable locking element 12.
  • the Nitinol springs 1 and 2 are supplied from the DC voltage source 13, voltage applied over a certain period of time through the adjustable timing circuit 14 and the period is sufficient to heat the springs by Joule effect till a temperature that changes their elastic constant to enable firm actuation of the locking element.
  • the Nitinol springs are compressed, the locking element 5 moves the two cams 6 and 7 until the cam 7 exits the slot guides 8, 8', 8" and remains locked on the grooves 9, 9', 9 " until the springs cooling, similar with a pen mechanism.
  • the timing mechanism allows manual switching of time by a switch 15 or by means of a temperature sensor that reads the ambient temperature and ensures the heating of the springs to the required switching temperature. Returning to the locked position of the locking system is made by a new feeding command to the two Nitinol springs 1 and 2, their compression and rebound (similar with the pen mechanism).
  • the interlocking system according to the invention can be reproduced with the same characteristics and performances whenever necessary, which is an argument in favour of respecting the industrial applicability criterion.

Landscapes

  • Lock And Its Accessories (AREA)

Abstract

According to the invention, the interlocking system consists essentially of two Nitinol springs (1) and (2) attached to one end of the fixed plate (3), and at the other end of the movable plate (4) with the locking element (5), whose bi-directional displacement obtained by heating the springs, controls the position of two cams (6) and (7) by means of guiding grooves (8 ', 8' ') 9), (9 '), (9' ') and leads to the locking or unlocking of the mobile element (12).The abstract of the invention will be published together with Figure 1.

Description

  • The invention relates to an interlocking system made on the basis of two Nitinol elastic elements (shape-memory material), intended to lock doors, shutters in order to secure constructions or installations.
  • In order to realize an interlocking system, a solution is known (APOSTU, C. Dispozitiv de blocare, Invention Patent RO108993 , OSIM Bucuresti), consisting mainly of a housing, which has a latch and a locking mechanism, and which is inserted through a bezel from the mobile construction into a bezel from the fixed constructione, and when the bezels are approximately coaxial, its retention is provided by means of a ball that enters a recess that can be found in the fixed structure 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 decrease of the operational safety.
  • The technical problems that the invention solves consist in the constructive simplicity of the interlocking system as well as the increase in the precision with which the locking element is controlled.
  • According to the invention, the interlocking system removes the disadvantages represented by the fact that it consists essentially of two elastic elements from Nitinol modelled as springs which control an element that is inserted into a channel provided in the fixed structure, thus blocking it the mobile one.
  • The invention has the following advantages:
    • constructive simplicity;
    • safety in exploitation;
    • reduced gauge;
    • the ability to remotely command.
  • An embodiment of the invention will now be described with reference to Figure 1 and Figure 2 which are as follows:
    • a lateral view of the interlocking system in closed position;
    • a lateral view of the interlocking system in open position.
  • According to the invention, the interlocking system (figure 1 and figure 2) consists essentially of two Nitinol springs 1 and 2 attached at one end of the fixed plate 3 and at the other end of the movable plate 4 which is one with the locking element 5, whose bi-directional axial displacement commanded by the Nitinol springs 1 and 2, controls the movement of two cams 6 and 7 by means of the slot guides 8, 8', 8' 'on the grooves 9, 9', 9 ".
  • The cam 7 is provided with a spring 10 supported at one end on the fixed plate 3, which is designed to achieve the pretension of the drive system. In the locked position of the system, the Nitinol springs 1 and 2 are unstrained and the locking element 5 is positioned in the channel 11 provided in the movable locking element 12. To release the system, the Nitinol springs 1 and 2 are supplied from the DC voltage source 13, voltage applied over a certain period of time through the adjustable timing circuit 14 and the period is sufficient to heat the springs by Joule effect till a temperature that changes their elastic constant to enable firm actuation of the locking element.
  • The Nitinol springs are compressed, the locking element 5 moves the two cams 6 and 7 until the cam 7 exits the slot guides 8, 8', 8" and remains locked on the grooves 9, 9', 9 " until the springs cooling, similar with a pen mechanism. The timing mechanism allows manual switching of time by a switch 15 or by means of a temperature sensor that reads the ambient temperature and ensures the heating of the springs to the required switching temperature. Returning to the locked position of the locking system is made by a new feeding command to the two Nitinol springs 1 and 2, their compression and rebound (similar with the pen mechanism).
  • The interlocking system according to the invention can be reproduced with the same characteristics and performances whenever necessary, which is an argument in favour of respecting the industrial applicability criterion.

Claims (2)

  1. Interlocking system characterized in that it consists essentially of two Nitinol springs (1) and (2) attached to one end of the fixed plate (3), and at the other end of the movable plate (4) which is one with the locking element (5) whose bi-directional axial displacement commanded by the Nitinol springs (1) and (2), controls the movement of two cams (6) and (7) by means of the slot guides (8), (8'), (8") on the grooves (9), (9'), (9"); the entire drive system being pretension by means of the spring (10) attached at one end to the cam (7) and supported on the fixed plate (3).
  2. Interlocking system according to claim 1, characterized in that in the locking position the Nitinol springs (1) and (2) are unstrained, the locking element (5) is positioned in the channel (11) provided in the movable locking element (12), and to unblock the system, the Nitinol springs (1) and (2) are supplied with voltage from the DC voltage source (13), voltage applied by the adjustable timing circuit (14) in sufficient time to make it is possible to firmly actuate the interlocking element by heating the springs through Joule effect and changing their elastic constant; the return of the interlocking system to a locked position is accomplished by a new feeding command of the two springs with Nitinol (1) and (2) similar to a pen mechanism.
EP19464001.7A 2018-03-07 2019-02-15 Interlocking system Active EP3536880B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ROA201800157A RO133623A2 (en) 2018-03-07 2018-03-07 Locking system

Publications (2)

Publication Number Publication Date
EP3536880A1 true EP3536880A1 (en) 2019-09-11
EP3536880B1 EP3536880B1 (en) 2020-09-30

Family

ID=65717949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19464001.7A Active EP3536880B1 (en) 2018-03-07 2019-02-15 Interlocking system

Country Status (2)

Country Link
EP (1) EP3536880B1 (en)
RO (1) RO133623A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4195420A1 (en) * 2021-12-08 2023-06-14 Stefan cel Mare University of Suceava Socket safety system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO108993B1 (en) 1994-03-23 1994-10-31 Cristian Apostu Blocking device
US20110127781A1 (en) * 2009-11-30 2011-06-02 Gm Global Technology Operations, Inc. Lockable vehicle closure bumpers
DE102011004832A1 (en) * 2011-02-28 2012-08-30 Kiekert Ag Radial actuator for use as drive for rotary latch of lock for e.g. building, has rotatable shaft that is rotated by drive, where drive is designed so that turning axis of shaft is produced by forming wire-shaped memory alloy
WO2014192032A1 (en) * 2013-05-27 2014-12-04 Cisa S.P.A. Electric lock
US20160281389A1 (en) * 2015-03-24 2016-09-29 Leslie Ho Leung Chow Electrical mechanical locking device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO108993B1 (en) 1994-03-23 1994-10-31 Cristian Apostu Blocking device
US20110127781A1 (en) * 2009-11-30 2011-06-02 Gm Global Technology Operations, Inc. Lockable vehicle closure bumpers
DE102011004832A1 (en) * 2011-02-28 2012-08-30 Kiekert Ag Radial actuator for use as drive for rotary latch of lock for e.g. building, has rotatable shaft that is rotated by drive, where drive is designed so that turning axis of shaft is produced by forming wire-shaped memory alloy
WO2014192032A1 (en) * 2013-05-27 2014-12-04 Cisa S.P.A. Electric lock
US20160281389A1 (en) * 2015-03-24 2016-09-29 Leslie Ho Leung Chow Electrical mechanical locking device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4195420A1 (en) * 2021-12-08 2023-06-14 Stefan cel Mare University of Suceava Socket safety system

Also Published As

Publication number Publication date
EP3536880B1 (en) 2020-09-30
RO133623A2 (en) 2019-09-30

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