EP0900901A2 - Dispositif de déclenchement d'une serrure éléctrique - Google Patents

Dispositif de déclenchement d'une serrure éléctrique Download PDF

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Publication number
EP0900901A2
EP0900901A2 EP98115570A EP98115570A EP0900901A2 EP 0900901 A2 EP0900901 A2 EP 0900901A2 EP 98115570 A EP98115570 A EP 98115570A EP 98115570 A EP98115570 A EP 98115570A EP 0900901 A2 EP0900901 A2 EP 0900901A2
Authority
EP
European Patent Office
Prior art keywords
pivot
keeper
lock
cam
teeth
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.)
Withdrawn
Application number
EP98115570A
Other languages
German (de)
English (en)
Other versions
EP0900901A3 (fr
Inventor
Deo Errani
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.)
CISA SpA
Original Assignee
CISA SpA
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 CISA SpA filed Critical CISA SpA
Publication of EP0900901A2 publication Critical patent/EP0900901A2/fr
Publication of EP0900901A3 publication Critical patent/EP0900901A3/fr
Withdrawn legal-status Critical Current

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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
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0607—Controlling mechanically-operated bolts by electro-magnetically-operated detents the detent moving pivotally or rotatively
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/16—Use of special materials for parts of locks
    • E05B15/1635—Use of special materials for parts of locks of plastics materials
    • E05B2015/1664—Use of special materials for parts of locks of plastics materials for lock housing
    • 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
    • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B55/00—Locks in which a sliding latch is used also as a locking bolt

Definitions

  • the present invention relates to a device for adjusting the trip mechanism of an electric lock.
  • Conventional electric locks have a latch and a so-called reset plunger provided with a tang which is guided in a slot of an element (slider) which is slideable inside the casing of the lock and can be blocked by means of a trip mechanism comprising a ratchet system actuated by an electromagnetic unit.
  • the reset plunger is operatively coupled to the slider through a spring which remains compressed when the reset plunger, in the door closure position, abuts against the jamb, while the ratchet system keeps the slider blocked.
  • the compressed spring acts on the slider; as it moves, said slider draws the latch into the casing, thus allowing the door to open. It is possible to open an electric lock manually, acting with a handle or key on the ratchet system, which releases the slider and causes the retraction of the latch indirectly, by means of the compressed spring of the reset plunger, exactly as occurs with an electromagnetic actuation.
  • the aim of the present invention is to provide an adjustment device which, by acting on the trip mechanism of an electric lock, allows to obviate the above drawbacks.
  • an object of the present invention is to provide a device which is easy to install inside the lock and can be adjusted with simple actions also by nonexpert personnel.
  • a device for adjusting the trip mechanism of an electric lock that comprises a latch and a reset plunger, said mechanism comprising an electromagnet which is composed of at least one coil, forming a seat inside which a ferromagnetic core is guided, said core being actuated by a spring against a keeper which is pivoted in a rocker-like fashion and a ratchet system for actuating said latch, characterized in that it comprises a pivot which is rotatably supported inside said lock and is provided with a cam which is operatively associated with said keeper so as to adjust its position with respect to said ratchet system.
  • 1 designates the casing of the electric lock, which is composed of a bottom 2 surrounded by a wall 3 which delimits the compartment 4 for containing the actuation elements of the lock, which are not described in great detail since they are fully conventional.
  • the actuation elements comprise the so-called reset plunger 5, whereon a slider 6 is slidingly associated.
  • a spring 7 acts between a flap 6a of the slider and a pin 6b which is driven through a slot 6c of the slider.
  • the reset plunger 5 lies inside the casing because it abuts against the jamb, and the slider 6 is engaged, by means of a tooth 8, in the notch 8a of a lever 9 which is pivoted on a pivot 10.
  • the lever 9 forms, together with an electromagnetic unit 11, a resettable trip mechanism which is adapted to retain or release the slider 6.
  • the electromagnetic unit 11 By activating the electromagnetic unit 11, the lever 9 can rotate, allowing the tooth 8 to disengage from the notch 8a and allowing the slider 6 to slide on the reset plunger 5 and draw into the lock with it the latch 12 whereto it is coupled in the sliding direction.
  • the retraction of the latch into the lock causes the compression of the return spring 12a, which is weaker than the spring 7 and which, when the door is open, pushes out the latch 12 and the reset plunger 5 and thus resets the trip mechanism.
  • the electromagnetic unit comprises a body 13 which is formed by molding plastic material and is composed of a base 14 ( Figure 4), which is substantially rectangular and is fixed to the inner face of the wall 3 of the casing, and of a pair of walls 15 and 16, which protrude at right angles to the base from the two Iongitudinal sides thereof.
  • the walls 15, 16 are shaped like a right-angled trapezoid in which the longer parallel sides lie on the base and the vertical sides are connected by a transverse wall 17 which reaches a level that lies below the top of the flaps 15 and 16.
  • Two flaps 18 and 19 protrude outward from the transverse wall 17, and below the flaps there is a block provided with terminals 20 for connection to the wires of the electrical power supply and a cable passage sleeve 21.
  • a flat region is formed on the upper face of the base in order to arrange a cylindrical coil 22 of an electromagnet, which is connected to the terminals 20.
  • the coil 22 forms a cylindrical cavity 23 in which the core 24, constituted by a cylinder made of ferromagnetic material, is arranged together with a spring (not shown) which actuates the core toward the outside of the coil 22 to act on the keeper of the electromagnet.
  • the keeper is constituted by a plate 28 which is shaped so that the end of one of its arms 29 is operatively associated with the core 24, while the opposite arm 30 rests on the flaps 18 and 19.
  • the plate 28 is pivoted in a rocker-like manner in the flaps 15 and 16 of the body 13.
  • two tabs 31 and 32 protrude outward from the longitudinal sides of the plate 27 and engage recesses of the flaps 15 and 16.
  • the keeper 28 is adapted to assume two positions: in one of said positions, it engages a tooth 37 which is formed at the end of the lever 9, so as to prevent its rotation and ensure the engagement of the tooth 8 of the slider 6 in the notch 8a of the lever 9.
  • the keeper 28 oscillates into the position for disengaging the tooth 37 from the keeper 28, allowing the rotation of the lever 9 and the sliding of the slider 6, which drags along the latch 12 in the direction for retraction into the lock, allowing the door to open.
  • the coil 22 is spaced from the transverse wall 17, so that a space remains between the coil and the wall in which a ferromagnetic element 33 is meant to be placed; said element 33 is adapted to form a preferential circuit for the lines of force of the magnetic flux generated by the coil 22.
  • the element 33 is constituted by a plate made of ferromagnetic material which is bent so as to have a first portion 34, which is fixed to the base 14 and lies between the coil 22 and the wall 17, a second portion 35, which lies at right angles to the first portion adjacent to the transverse wall 17, and a third portion 36 which runs from the end of the second portion toward the coil below the keeper 28. Substantially, therefore, the element 33 is shaped like a letter U lying on the base 14.
  • the present invention proposes an adjustment device which consists of a pivot 39 which is rotatably supported in holes 40 and 41 of the flaps 18 and 19.
  • a diametrical slot 42 is formed in the end of the pivot 39 that is rotatably supported in the flap 18; two mutually opposite teeth 43, formed inside a ring 44 applied to the pivot 39, engage in said slot.
  • the ring 44 has a radial cam 45 whose radius gradually increases over the angle that it covers.
  • the end of the pivot 39 that engages in the hole 41 of the flap 19 forms a head 46 which has a knurled region composed of equidistant axial teeth, which are adapted to couple to complementary teeth formed in the wall of the hole 41.
  • a stop element which consists of a pair of elastic tabs 47 and 48 which protrude from diametrical positions of the pivot 39 and are separated from the knurled head 46 by respective cutouts 49 and 50 of the pivot 39.
  • the tabs 47 and 48 are hook-shaped, so that by becoming narrower during the insertion of the pivot in the holes 40 and 41 of the flaps 18 and 19 they can be accommodated in the cutouts 49 and 50. After the pivot 39 has been inserted so as to lock the ring 44 below the flap 18, the flaps 47 and 48 open out above the flap 19, preventing extraction of the pivot 39.
  • the diameter of the cam 44 is such that its profile protrudes out of the plane that passes through the edges of the flaps 18 and 19 directed toward the keeper 28.
  • the keeper 28 due to the thrust of the core 24 whereon the return spring arranged inside the coil 22 acts, instead of resting on the edges of the flaps 18 and 19, continues to rest on the peripheral region of the cam 44 and, depending on the angular orientation of said cam, assumes a position in which its end 29 is more or less spaced from the coil 22, as shown in Figures 6 and 7.
  • the keeper 28 when the excitation voltage of the electromagnet is low, for example due to a voltage drop of the supply line, the keeper 28 is orientated so that the tip 51 of the tooth 37 rests on the end of arm 29 ( Figure 6). In this manner, the attraction force of the electromagnet must be sufficient to overcome only the friction between the tooth and the keeper.
  • the side 52 of the tooth 37 that is meant to rest against the keeper 28 forms an acute angle [ ⁇ ] with respect to the plane that is perpendicular to the keeper. Accordingly, a small undercut forms between the tip 51 and the keeper 28, and in order to move beyond it the lever 9 must rise very slightly and therefore a higher attraction force of the electromagnet is necessary.
  • the cam 44 is adjusted so as to move the keeper 28 into the position of Figure 6 to ensure the activation of the trip mechanism.
  • the head 46 has a diametrical slit forming two halves which can be moved mutually closer to allow a more flexible coupling between the teeth of the head 46 and those of the hole 41.

Landscapes

  • Breakers (AREA)
  • Endoscopes (AREA)
  • Lock And Its Accessories (AREA)
  • Eye Examination Apparatus (AREA)
EP98115570A 1997-09-08 1998-08-19 Dispositif de déclenchement d'une serrure éléctrique Withdrawn EP0900901A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO970541 1997-09-08
IT97BO000541A IT1294194B1 (it) 1997-09-08 1997-09-08 Dispositivo per regolazione del meccanismo di scatto di una serratura.

Publications (2)

Publication Number Publication Date
EP0900901A2 true EP0900901A2 (fr) 1999-03-10
EP0900901A3 EP0900901A3 (fr) 2000-12-20

Family

ID=11342515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98115570A Withdrawn EP0900901A3 (fr) 1997-09-08 1998-08-19 Dispositif de déclenchement d'une serrure éléctrique

Country Status (2)

Country Link
EP (1) EP0900901A3 (fr)
IT (1) IT1294194B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1531216A3 (fr) * 2003-11-12 2007-01-03 CISA S.p.A. Dispositif anti-vibratoire pour une serrure électrique
CN100439638C (zh) * 2004-11-24 2008-12-03 谢惠华 遥控防盗门锁结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114215431B (zh) * 2021-11-19 2023-10-03 广州保仕盾智能科技有限公司 一种锁体的传动机构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE140453C (fr) *
FR565933A (fr) * 1923-04-21 1924-02-07 Perfectionnement au système de déclenchement des ouvre-portes électriques
FR1484810A (fr) * 1966-05-06 1967-06-16 Serrure électromécanique pour porte
FR2615235B1 (fr) * 1987-05-13 1995-05-19 Guidotti Creations D Serrure comportant un mecanisme de deverrouillage a fonctionnement electrique
IT1259255B (it) * 1992-03-24 1996-03-11 Italiana Serrature Affini Serratura elettrica dotata di maniglia di apertura con azione diretta sullo scrocco

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1531216A3 (fr) * 2003-11-12 2007-01-03 CISA S.p.A. Dispositif anti-vibratoire pour une serrure électrique
CN100439638C (zh) * 2004-11-24 2008-12-03 谢惠华 遥控防盗门锁结构

Also Published As

Publication number Publication date
IT1294194B1 (it) 1999-03-22
ITBO970541A1 (it) 1999-03-08
ITBO970541A0 (it) 1997-09-08
EP0900901A3 (fr) 2000-12-20

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