EP2959081A1 - Electromechanical control device for an operating cam of a cylinder lock - Google Patents

Electromechanical control device for an operating cam of a cylinder lock

Info

Publication number
EP2959081A1
EP2959081A1 EP14707116.1A EP14707116A EP2959081A1 EP 2959081 A1 EP2959081 A1 EP 2959081A1 EP 14707116 A EP14707116 A EP 14707116A EP 2959081 A1 EP2959081 A1 EP 2959081A1
Authority
EP
European Patent Office
Prior art keywords
shaft
control device
clutch pin
control rod
operating cam
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
EP14707116.1A
Other languages
German (de)
French (fr)
Other versions
EP2959081B1 (en
Inventor
Gian Pietro Andreoli
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.)
Iseo Serrature SpA
Original Assignee
Iseo Serrature 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 Iseo Serrature SpA filed Critical Iseo Serrature SpA
Publication of EP2959081A1 publication Critical patent/EP2959081A1/en
Application granted granted Critical
Publication of EP2959081B1 publication Critical patent/EP2959081B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E05B47/0611—Cylinder locks with electromagnetic control
    • E05B47/0615—Cylinder locks with electromagnetic control operated by handles, e.g. by knobs
    • 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
    • E05B47/0611—Cylinder locks with electromagnetic control
    • E05B47/0638—Cylinder locks with electromagnetic control by disconnecting the rotor
    • E05B47/0642—Cylinder locks with electromagnetic control by disconnecting the rotor axially, i.e. with an axially disengaging coupling element
    • 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
    • E05B2047/0014—Constructional features of actuators or power transmissions therefor
    • E05B2047/0018—Details of actuator transmissions
    • E05B2047/0026—Clutches, couplings or braking arrangements
    • E05B2047/0031—Clutches, couplings or braking arrangements of the elastic type

Definitions

  • the present invention refers to an electromechanical control device for an operating cam of a cylinder lock, and to a cylinder incorporating such an electromechanical control device.
  • This electromechanical device is capable of connecting and disconnecting a handle to the cam of the cylinder to enable and disable the opening of the lock.
  • This electromechanical device is generally connected to the external handle of the lock and is operable by means of a personal electronic card capable of interacting with an electronic controller for the electromechanical device incorporated into the handle, to which it sends a signal for activating the connection for a fixed time between the handle and the cam.
  • this control device is generally provided in combination with a completely mechanical control device for the cylinder cam, connected to the inner handle of the lock.
  • the proposed technical task of the present invention is, therefore, to create an electromechanical control device for an operating cam of a cylinder lock, and a cylinder lock which incorporates such an electromechanical control device, which make it possible to eliminate the technical disadvantages complained of in the known art.
  • an object of the invention is to create an electromechanical control device for an operating cam of a cylinder lock featuring simple construction.
  • Another object of the invention is to create an electromechanical control device for an operating cam of a cylinder lock having a small number of components which are commercially easily found, in order to simplify the assembly and warehousing logistics thereof.
  • Another object of the invention is to create an electromechanical control device for an operating cam of a cylinder lock having high reliability in operation and extremely solid construction which will be able to ensure its correct operation for an extended period of use.
  • an electromechanical control device for an operating cam of a cylinder lock, comprising a shaft fixable to a handle, a clutch pin translatable along the shaft for connecting said handle to said cam, a control rod coaxial with the shaft, a motor for rotationally operating the control rod on itself, characterised in that said clutch pin has an axial cavity in which are positioned means for transforming a rotation of the control rod into a reversible translation of the clutch pin along the shaft from a disconnection position to a connection position.
  • This device is applicable either to a single cylinder or to a double cylinder.
  • figure 1 shows an exploded view of part of the cylinder which incorporates the electromechanical device
  • figure 2 shows the cylinder incorporating the electromechanical device of figure 1 , sectioned along the vertical median plane of the cylinder, and with the clutch pin the retracted disconnection position;
  • figure 2a shows a detail of the cylinder incorporating the electromechanical device of figure 1 , sectioned along the horizontal median plane of the cylinder, and with the clutch pin in the retracted disconnection position;
  • figure 3 shows the cylinder incorporating the electromechanical device of figure 1 , sectioned along the vertical median plane of the cylinder, and with the clutch pin in the partially extended position of searching for the angular position for connection;
  • figure 3a shows a detail of the cylinder incorporating the electromechanical device of figure 1 , sectioned along the horizontal median plane of the cylinder, and with the clutch pin in the partially extended position of searching for the angular position for connection;
  • figure 4 shows the cylinder incorporating the electromechanical device of figure 1 , sectioned along the vertical median plane of the cylinder, and with the clutch pin in the completely extended connection position;
  • figure 4a shows a detail of the cylinder incorporating the electromechanical device of figure 1 , sectioned along the horizontal median plane of the cylinder, and with the clutch pin in the completely extended connection position:
  • figure 5 shows the cylinder incorporating the electromechanical device of figure 1 , sectioned along the vertical median plane of the cylinder, and with the clutch pin still in the completely extended connection position when the slider has reached its end of stroke opposite to that of figure 4;
  • figure 5a shows a detai 1 of the cylinder incorporating the electromechanical device of figure 1 , sectioned along the horizontal median plane of the cylinder, and with the clutch pin still in the completely extended connection position when the slider has reached its end of stroke opposite to that of figure 4.
  • an electromechanical control device 1 is illustrated for an operating cam 2 of a cylinder lock 3.
  • a cylinder 3 for a lock having at least one first electromechanical control device 1 for an operating cam 2 of the lock.
  • the cylinder 3 has a stator 4 to which the cam 2 is connected rotatably about an axis L which extends in the longitudinal direction of the cylinder 3.
  • the stator 4 has a cylindrical cavity 5 which extends in the direction of axis L for the entire length of the cylinder 3 in which a cylindrical bush 6 is coaxially housed rotatably on itself.
  • the cylindrical bush 6 is fixedly connected to the cam 2.
  • the cylinder is double, meaning that each half-part of the cylinder defined between the median plane S of the cam 2 perpendicular to the axis
  • the present invention is usable also for a single cylinder in which only one half-part of the cylinder defined between the median plane S of the cam 2 perpendicular to the axis L and an end of the stator 4, is active for the control of the lock.
  • the electromechanical control device 1 for the cam 2 comprises a shaft 7 having at one of its ends a flange 19 for fixing to a handle 8, an element 9 connecting the handle 8 to the cam 2, supported by the shaft 7, a control rod 10 motorised for rotating on itself, and means for transforming a rotation of the control rod 10 into a reversible translation of the connecting element 9 from a disconnection position to a connection position between the handle 8 and the cam 2.
  • the control rod 10 is motorised by means of a motor 29 by which it is supported coaxially with the axis of the shaft 7.
  • the motor 29 is fixed onto the same side of the flange 19 as the one from which the shaft 7 projects, while the handle 8 is provided on the opposite side of the flange 19 and has a shell configuration for enclosing within it the electronic controller (not shown) and the electrical supply for the electromechanical device 1.
  • the handle 8 has a thread 30 engageable in a counter-thread 31 present on the flange 19 itself.
  • the control rod 10 has an external cylindrical lateral surface 26.
  • the clutch pin 9 is rotational ly integral with the shaft 7 but is translatable in the direction of the axis of the shaft 7.
  • the clutch pin 9 has a cylindrical longitudinal body, axially hollow, which extends with its axis oriented in the direction of the axis of the shaft 7.
  • the hollow body of the clutch pin 9 has more precisely a base 32 closing one end of the axial cavity 20, an external cylindrical lateral surface 13 and an internal cylindrical lateral surface 21 which delimits the axial cavity 20.
  • the small shaft 28 of the motor 29 to which the control rod 10 is keyed extends coaxially inside the axial cavity 20 of the clutch pin 9.
  • the shaft 7 has a longitudinal body having an axial cavity 1 1 as guide for the translation of the clutch pin 9 between the disconnection position, in which the clutch pin 9 is completely retracted inside the axial cavity 1 1 of the shaft 7, and the connection position, in which the clutch pin 9 extends beyond the opposite end 12 of the shaft 7 to the one which is equipped with the coupling flange 19 for the handle 8.
  • the hollow body of the shaft. 7 has more precisely a first external cylindrical lateral surface 15 which can be coupled to the internal cylindrical lateral surface of the cylindrical seat 5.
  • a second external cylindrical lateral surface 16 coaxial with but of smaller diameter than the first external cylindrical lateral surface 15 and coLiplable to the internal cylindrical lateral surface of the cylindrical bush 6, and an internal cylindrical lateral surface 14 coaxial with the first and second surfaces 15 and 16 and coupled to the external cylindrical lateral surface 13 of the clutch pin 9.
  • the first external cylindrical lateral surface 15 of the shaft 7 has a perimetral groove 37 which extends in a plane perpendicular to the axis of the shaft 7 and is designed to house a grub screw 38 which can be screwed into a seat 39 in the stator 4 to constrain the shaft 7 to the stator 4 axial ly but not in rotation.
  • the body of the clutch pin 9 has, along an external cylindrical generatrix thereof, at least one tapering radial protrusion 17 engaged in a corresponding radial recess 18 provided along an internal cylindrical generatrix of the shaft 7.
  • the radial protrusions 1 7 have a function as keys since they confer on the clutch pin 9 a special profile which can be coupled with a counter-profile 42 provided for the purpose in the cylindrical bush 6 only when the clutch pin 9 coaxially engaged in the cylindrical seat 5 is angularly oriented in such a way as to make its profile match the counter-profile 42.
  • the transformation means comprise a slider 23 translatably engaged along the control rod 1 0.
  • the transformation means comprise a spherical element 24 for operating the slider 23 in translation, constrained to the control rod 10 rollably along a helical track 25 which extends around the cylindrical lateral surface 26 of the control rod 10 in such a way as to transform a rotation of the control rod 10 into a translation of the slider 23.
  • the transformation means comprise an elastic element 27 for operating the clutch pin 9 in translation, fixed to the slider 23 and to the clutch pin 9 in such a way as to exert selectively on the clutch pin 9 an elastic thrust or traction force in the direction of the axis of the shaft 7 as a result of the operation in rotation of the control rod 10.
  • the control rod 10 is keyed to the small shaft 28 of the motor 29 in such a way that it too is coaxially positioned inside the axial cavity 20 of the clutch pin 9.
  • the slider 23, too, has a longitudinal body, axial ly hollow, having an external lateral surface and an internal lateral surface coupled to the external cylindrical lateral surface 26 of the control rod 10.
  • the body of the slider 23, finally, has a transverse through hole 45 where the spherical element 24 is located.
  • the hole 45 has a dimension in the axial direction of the body of the slider 23 substantially equal to the diameter of the spherical element 24 in such a way as to house the spherical element 24 in roilable and translatable manner integrally with the slider 23 in the axial direction of the slider 23 itself.
  • the helical track 25 is formed by a groove in the external cylindrical lateral surface 26 of the control rod 10 and has in turn a transverse section of semicircular form, with a diameter substantially equal to the diameter of the spherical element 24.
  • a first half-part of the spherical element 24 is thus accommodated in the helical track 25 while the second half-part of the spherical element 24 is accommodated in the hole 45.
  • the opposite ends of the helical track 25, which are located in different axial positions of the control rod 10, have a hemispherical seat couplable to the spherical element 24.
  • the elastic element 27 comprises a helical spring 33 arranged coaxially in the cavity 20 of the clutch pin 9, and in particular fitted over the slider 23.
  • the helical spring 33 has a first terminal end 34 proximal to the base 32 and a second terminal end 36 distal from the base 32.
  • the spring 32 is active for operating the clutch pin 9 in translation, but also for retaining the spherical element 24 in the hole 45.
  • the first terminal end 34 of the spring 33 is fixed to the base 32 of the clutch pin 9 while the second terminal end 36 of the spring 33 is fixed to the body of the slider 23 on the external side of the hole 45 to retain inside it the spherical element 24.
  • a salient characteristic of the device consists in its telescopic construction having a single axis L which represents the axis of the handle 8 about which the handle 8 is rotatable on itself, the axis of the shaft 7 about which the shaft 7 is rotatable on itself, the axis of the control rod 10 about which the control rod 10 is rotatable on itself, the axis of the slider 23 along which the slider 23 itself is translatable, and the axis of the clutch pin 9 along which the clutch pin 9 itself is translatable.
  • axis L also coincides with the axis of the small shaft 28 of the motor 29.
  • the cylinder is double and, in order for the cam 2 to operate, provides in addition to the electromechanical device 1 also a completely mechanical device 40 having a handle 41 permanently connected integrally in rotation with the cam 2.
  • the cylinder can alternatively provide two electromechanical devices attached as mirror images of each other to the cylinder for operating the cam 2 either from the inside or from the outside of the door frame.
  • the operation of the electromechanical device 1 is briefly as follows.
  • the initial angular position of the handle 8 is such as to arrange the profile of the clutch pin 9 in a position angularly offset from the counter-profile 42.
  • the user brings into proximity with the handle 8 his personal electronic card which thus interacts with the electronic controller incorporated into the handle 8, processing a request to generate a signal to operate the motor 29.
  • the electronic controller generates a signal for timed operation of the motor 29 with which the motor 29 is commanded to perform a rotation and, after a preset time, a contrarotation.
  • the rotation must be of such an extent as to cause the movement of the spherical element 24 from one end to the other of the helical track 25.
  • the spherical element 24 is positioned at the end of the helical track 25 adjacent to the motor 29 and consequently the slider 23 is located in a position displaced towards the end 46 of the control rod 1 0 adjacent to the motor 29.
  • the motor 29 rotates its own small shaft 28 which in turn draws the control rod 10 into rotation on itself.
  • the slider 23 cannot rotate because it is fixed by the spring 33 to the clutch pin 9 which cannot rotate as a result of the engagement of its radial protrusions 17 in the radial recesses 18 of the shaft 7.
  • the movement of the slider 23 is transmitted by means of the helical spring 33 to the clutch pin 9 which performs a first translation stroke which terminates when it is intercepted by the counter-profile 42.
  • the clutch pin 9 is angularly offset from the counter-profile 42 and is not therefore able to engage in it.
  • the clutch pin 9 rotates on itself in search of the angular position for connection which is reached when its profile matches the counter-profile 42, In this position the angular clutch pin 9, as a result of the distension of the spring 33, performs a further translation with which it engages in the counter-profile 42 to effect the connection of the handle 8 to the cam 2. In this condition therefore the cam 2 becomes integral in rotation with the handle 8 (fig. 4).
  • the retraction of the clutch pin 9 can, due to friction, be delayed with respect to the slider 23 reaching the initial position, as shown in figure 5. This causes an extension of the spring 33 which is loaded in traction, generating the force necessary for returning the clutch pin 9 towards the disconnection position.
  • electromechanical control device for an operating cam of a cylinder lock thus conceived is susceptible to numerous modifications and variants, all falling within the scope of the inventive concept; furthermore, all the details are replaceable by technically equivalent elements.
  • the materials used, as well as the dimensions, may in practice be of any type according to requirements and the state of the art.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lock And Its Accessories (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

The electromechanical control device (1) for an operating cam (2) of a cylinder lock comprises a shaft (7) fixable to a handle (8), a clutch pin (9) translatable along the shaft (7) for the connection of the handle to the cam (2), a control rod (10) coaxial with the shaft (7), a motor (29) for rotationally operating the control rod (10) on itself, the clutch pin (9) having an axial cavity (20) in which are positioned means for the transformation of a rotation of the control rod (10) into a reversible translation of the clutch pin (9) along the shaft (7) from a disconnection position to a connection position.

Description

ELECTROMECHANICAL CONTROL DEVICE FOR AN OPERATING CAM OF A CYLINDER LOCK
DESCRIPTION
The present invention refers to an electromechanical control device for an operating cam of a cylinder lock, and to a cylinder incorporating such an electromechanical control device.
For a long time there have been cylinders for locks on the market having an electromechanical control device for the cam which operates the lock.
This electromechanical device is capable of connecting and disconnecting a handle to the cam of the cylinder to enable and disable the opening of the lock.
This electromechanical device is generally connected to the external handle of the lock and is operable by means of a personal electronic card capable of interacting with an electronic controller for the electromechanical device incorporated into the handle, to which it sends a signal for activating the connection for a fixed time between the handle and the cam.
In double cylinders this control device is generally provided in combination with a completely mechanical control device for the cylinder cam, connected to the inner handle of the lock.
Known electromechanical devices of this type can suffer from excessively complicated construction which requires a multiplicity of difficult-to-assemble components.
This complicated assembly is in large measure due to the need to provide miniaturised components suitable for being housed in the cylinder of the lock. Sometimes because of their excessive complication these known electromechanical devices have displayed limited reliability of operation and limited durability over time.
The proposed technical task of the present invention is, therefore, to create an electromechanical control device for an operating cam of a cylinder lock, and a cylinder lock which incorporates such an electromechanical control device, which make it possible to eliminate the technical disadvantages complained of in the known art.
Within the scope of this technical task an object of the invention is to create an electromechanical control device for an operating cam of a cylinder lock featuring simple construction.
Another object of the invention is to create an electromechanical control device for an operating cam of a cylinder lock having a small number of components which are commercially easily found, in order to simplify the assembly and warehousing logistics thereof.
Another object of the invention is to create an electromechanical control device for an operating cam of a cylinder lock having high reliability in operation and extremely solid construction which will be able to ensure its correct operation for an extended period of use.
The technical task, as well as these and other objects, according to the present invention are achieved by creating an electromechanical control device for an operating cam of a cylinder lock, comprising a shaft fixable to a handle, a clutch pin translatable along the shaft for connecting said handle to said cam, a control rod coaxial with the shaft, a motor for rotationally operating the control rod on itself, characterised in that said clutch pin has an axial cavity in which are positioned means for transforming a rotation of the control rod into a reversible translation of the clutch pin along the shaft from a disconnection position to a connection position.
This device is applicable either to a single cylinder or to a double cylinder.
Other characteristics of the present invention are also defined in the claims which follow.
Further characteristics and advantages of the invention will more fully emerge from the description of a preferred but not exclusive embodiment of the electromechanical control device for an operating cam of a cylinder lock according to the invention, illustrated by way of non-limiting example in the accompanying drawings, in which:
figure 1 shows an exploded view of part of the cylinder which incorporates the electromechanical device;
figure 2 shows the cylinder incorporating the electromechanical device of figure 1 , sectioned along the vertical median plane of the cylinder, and with the clutch pin the retracted disconnection position;
figure 2a shows a detail of the cylinder incorporating the electromechanical device of figure 1 , sectioned along the horizontal median plane of the cylinder, and with the clutch pin in the retracted disconnection position;
figure 3 shows the cylinder incorporating the electromechanical device of figure 1 , sectioned along the vertical median plane of the cylinder, and with the clutch pin in the partially extended position of searching for the angular position for connection; figure 3a shows a detail of the cylinder incorporating the electromechanical device of figure 1 , sectioned along the horizontal median plane of the cylinder, and with the clutch pin in the partially extended position of searching for the angular position for connection;
figure 4 shows the cylinder incorporating the electromechanical device of figure 1 , sectioned along the vertical median plane of the cylinder, and with the clutch pin in the completely extended connection position;
figure 4a shows a detail of the cylinder incorporating the electromechanical device of figure 1 , sectioned along the horizontal median plane of the cylinder, and with the clutch pin in the completely extended connection position:
figure 5 shows the cylinder incorporating the electromechanical device of figure 1 , sectioned along the vertical median plane of the cylinder, and with the clutch pin still in the completely extended connection position when the slider has reached its end of stroke opposite to that of figure 4;
figure 5a shows a detai 1 of the cylinder incorporating the electromechanical device of figure 1 , sectioned along the horizontal median plane of the cylinder, and with the clutch pin still in the completely extended connection position when the slider has reached its end of stroke opposite to that of figure 4.
With reference to the drawings, an electromechanical control device 1 is illustrated for an operating cam 2 of a cylinder lock 3.
With reference to the drawings, a cylinder 3 for a lock is illustrated, having at least one first electromechanical control device 1 for an operating cam 2 of the lock. The cylinder 3 has a stator 4 to which the cam 2 is connected rotatably about an axis L which extends in the longitudinal direction of the cylinder 3.
The stator 4 has a cylindrical cavity 5 which extends in the direction of axis L for the entire length of the cylinder 3 in which a cylindrical bush 6 is coaxially housed rotatably on itself.
The cylindrical bush 6 is fixedly connected to the cam 2.
In the case illustrated the cylinder is double, meaning that each half-part of the cylinder defined between the median plane S of the cam 2 perpendicular to the axis
L and an end of the stator 4, is operative for the control of the lock.
However, the present invention is usable also for a single cylinder in which only one half-part of the cylinder defined between the median plane S of the cam 2 perpendicular to the axis L and an end of the stator 4, is active for the control of the lock.
The electromechanical control device 1 for the cam 2 comprises a shaft 7 having at one of its ends a flange 19 for fixing to a handle 8, an element 9 connecting the handle 8 to the cam 2, supported by the shaft 7, a control rod 10 motorised for rotating on itself, and means for transforming a rotation of the control rod 10 into a reversible translation of the connecting element 9 from a disconnection position to a connection position between the handle 8 and the cam 2.
The control rod 10 is motorised by means of a motor 29 by which it is supported coaxially with the axis of the shaft 7.
The motor 29 is fixed onto the same side of the flange 19 as the one from which the shaft 7 projects, while the handle 8 is provided on the opposite side of the flange 19 and has a shell configuration for enclosing within it the electronic controller (not shown) and the electrical supply for the electromechanical device 1.
In particular for the fixing to the flange 19 the handle 8 has a thread 30 engageable in a counter-thread 31 present on the flange 19 itself.
The control rod 10 has an external cylindrical lateral surface 26.
The clutch pin 9 is rotational ly integral with the shaft 7 but is translatable in the direction of the axis of the shaft 7.
The clutch pin 9 has a cylindrical longitudinal body, axially hollow, which extends with its axis oriented in the direction of the axis of the shaft 7.
The hollow body of the clutch pin 9 has more precisely a base 32 closing one end of the axial cavity 20, an external cylindrical lateral surface 13 and an internal cylindrical lateral surface 21 which delimits the axial cavity 20.
The small shaft 28 of the motor 29 to which the control rod 10 is keyed extends coaxially inside the axial cavity 20 of the clutch pin 9.
The shaft 7 has a longitudinal body having an axial cavity 1 1 as guide for the translation of the clutch pin 9 between the disconnection position, in which the clutch pin 9 is completely retracted inside the axial cavity 1 1 of the shaft 7, and the connection position, in which the clutch pin 9 extends beyond the opposite end 12 of the shaft 7 to the one which is equipped with the coupling flange 19 for the handle 8.
The hollow body of the shaft. 7 has more precisely a first external cylindrical lateral surface 15 which can be coupled to the internal cylindrical lateral surface of the cylindrical seat 5. a second external cylindrical lateral surface 16 coaxial with but of smaller diameter than the first external cylindrical lateral surface 15 and coLiplable to the internal cylindrical lateral surface of the cylindrical bush 6, and an internal cylindrical lateral surface 14 coaxial with the first and second surfaces 15 and 16 and coupled to the external cylindrical lateral surface 13 of the clutch pin 9. The first external cylindrical lateral surface 15 of the shaft 7 has a perimetral groove 37 which extends in a plane perpendicular to the axis of the shaft 7 and is designed to house a grub screw 38 which can be screwed into a seat 39 in the stator 4 to constrain the shaft 7 to the stator 4 axial ly but not in rotation.
The body of the clutch pin 9 has, along an external cylindrical generatrix thereof, at least one tapering radial protrusion 17 engaged in a corresponding radial recess 18 provided along an internal cylindrical generatrix of the shaft 7.
In particular, two diametrically opposed radial protrusions 17 are provided.
The radial protrusions 1 7 have a function as keys since they confer on the clutch pin 9 a special profile which can be coupled with a counter-profile 42 provided for the purpose in the cylindrical bush 6 only when the clutch pin 9 coaxially engaged in the cylindrical seat 5 is angularly oriented in such a way as to make its profile match the counter-profile 42.
The transformation means comprise a slider 23 translatably engaged along the control rod 1 0.
Furthermore the transformation means comprise a spherical element 24 for operating the slider 23 in translation, constrained to the control rod 10 rollably along a helical track 25 which extends around the cylindrical lateral surface 26 of the control rod 10 in such a way as to transform a rotation of the control rod 10 into a translation of the slider 23.
Furthermore the transformation means comprise an elastic element 27 for operating the clutch pin 9 in translation, fixed to the slider 23 and to the clutch pin 9 in such a way as to exert selectively on the clutch pin 9 an elastic thrust or traction force in the direction of the axis of the shaft 7 as a result of the operation in rotation of the control rod 10.
The control rod 10 is keyed to the small shaft 28 of the motor 29 in such a way that it too is coaxially positioned inside the axial cavity 20 of the clutch pin 9.
The slider 23, too, has a longitudinal body, axial ly hollow, having an external lateral surface and an internal lateral surface coupled to the external cylindrical lateral surface 26 of the control rod 10.
The body of the slider 23, finally, has a transverse through hole 45 where the spherical element 24 is located.
The hole 45 has a dimension in the axial direction of the body of the slider 23 substantially equal to the diameter of the spherical element 24 in such a way as to house the spherical element 24 in roilable and translatable manner integrally with the slider 23 in the axial direction of the slider 23 itself.
The helical track 25 is formed by a groove in the external cylindrical lateral surface 26 of the control rod 10 and has in turn a transverse section of semicircular form, with a diameter substantially equal to the diameter of the spherical element 24. A first half-part of the spherical element 24 is thus accommodated in the helical track 25 while the second half-part of the spherical element 24 is accommodated in the hole 45. The opposite ends of the helical track 25, which are located in different axial positions of the control rod 10, have a hemispherical seat couplable to the spherical element 24.
The elastic element 27 comprises a helical spring 33 arranged coaxially in the cavity 20 of the clutch pin 9, and in particular fitted over the slider 23.
The helical spring 33 has a first terminal end 34 proximal to the base 32 and a second terminal end 36 distal from the base 32.
The spring 32 is active for operating the clutch pin 9 in translation, but also for retaining the spherical element 24 in the hole 45.
The first terminal end 34 of the spring 33 is fixed to the base 32 of the clutch pin 9 while the second terminal end 36 of the spring 33 is fixed to the body of the slider 23 on the external side of the hole 45 to retain inside it the spherical element 24. A salient characteristic of the device consists in its telescopic construction having a single axis L which represents the axis of the handle 8 about which the handle 8 is rotatable on itself, the axis of the shaft 7 about which the shaft 7 is rotatable on itself, the axis of the control rod 10 about which the control rod 10 is rotatable on itself, the axis of the slider 23 along which the slider 23 itself is translatable, and the axis of the clutch pin 9 along which the clutch pin 9 itself is translatable.
In particular the axis L also coincides with the axis of the small shaft 28 of the motor 29.
In the case illustrated the cylinder is double and, in order for the cam 2 to operate, provides in addition to the electromechanical device 1 also a completely mechanical device 40 having a handle 41 permanently connected integrally in rotation with the cam 2.
The cylinder can alternatively provide two electromechanical devices attached as mirror images of each other to the cylinder for operating the cam 2 either from the inside or from the outside of the door frame.
The operation of the electromechanical device 1 is briefly as follows.
Let us suppose that initially the shaft 7 is coaxially positioned in the cylindrical seat 5 of the stator 4 with the clutch pin 9 in the disconnection position.
Let us suppose also that the initial angular position of the handle 8 is such as to arrange the profile of the clutch pin 9 in a position angularly offset from the counter-profile 42.
The user brings into proximity with the handle 8 his personal electronic card which thus interacts with the electronic controller incorporated into the handle 8, processing a request to generate a signal to operate the motor 29.
The electronic controller generates a signal for timed operation of the motor 29 with which the motor 29 is commanded to perform a rotation and, after a preset time, a contrarotation.
The rotation must be of such an extent as to cause the movement of the spherical element 24 from one end to the other of the helical track 25.
Initially (fig. 2) the spherical element 24 is positioned at the end of the helical track 25 adjacent to the motor 29 and consequently the slider 23 is located in a position displaced towards the end 46 of the control rod 1 0 adjacent to the motor 29.
The motor 29 rotates its own small shaft 28 which in turn draws the control rod 10 into rotation on itself. During the rotation of the control rod 10 the slider 23 cannot rotate because it is fixed by the spring 33 to the clutch pin 9 which cannot rotate as a result of the engagement of its radial protrusions 17 in the radial recesses 18 of the shaft 7.
As a result of the rotation of the control rod 10, the spherical element 24, constrained by the helical spring 33 to remain partly inside the helical track 25 and partly in the hole 45 in the slider 23, rolls along the helical track 25 and simultaneously, with the part inserted in the hole 45, acts on the slider 23 which, having a single degree of translational freedom, cannot fail to be drawn in translation, in opposition to the helical spring 33, towards the end of the control rod 10 adjacent to the base 32 of the clutch pin 9.
The movement of the slider 23 is transmitted by means of the helical spring 33 to the clutch pin 9 which performs a first translation stroke which terminates when it is intercepted by the counter-profile 42. In this first phase, in fact, the clutch pin 9 is angularly offset from the counter-profile 42 and is not therefore able to engage in it.
The translation of the slider 23 continues even after the clutch pin 9 has encountered the counter-profile 42 and in particular until the spherical element 24 reaches the other end of the helical track 25 (fig. 3). During this further stroke the spring 33 is loaded in compression. The end of the rotation of the motor 29 is caused by the engagement of the spherical element 24 in the hemispherical seat adjacent to the base 32 of the clutch pin 9. When this end of stroke is reached the spring 33 is subjected to a slight elastic torsion which has the effect of damping the arrest of the motor 29. When, therefore, the user turns the handle 8, this transmits the rotation to the shaft 7, which in turn transmits it to the clutch pin 9. The clutch pin 9 rotates on itself in search of the angular position for connection which is reached when its profile matches the counter-profile 42, In this position the angular clutch pin 9, as a result of the distension of the spring 33, performs a further translation with which it engages in the counter-profile 42 to effect the connection of the handle 8 to the cam 2. In this condition therefore the cam 2 becomes integral in rotation with the handle 8 (fig. 4).
To achieve the connection of the handle 8 to the cam 2, naturally, the user must turn the handle 8 before the maximum time preset for the start of the contrarotation of the control rod 10 which brings the clutch pin 9 back to the initial disconnection position.
As a result of this contrarotation of the control rod 10 the slider 23, drawn by the spherical element 24, performs a translation contrary to the previous one, and the spring 33. now working in traction, draws the clutch pin 9 which retracts into the shaft 7.
The retraction of the clutch pin 9 can, due to friction, be delayed with respect to the slider 23 reaching the initial position, as shown in figure 5. This causes an extension of the spring 33 which is loaded in traction, generating the force necessary for returning the clutch pin 9 towards the disconnection position.
The end of the contrarotation of the motor 29 is caused by the engagement of the spherical element 24 in the hemispherical seat opposite to the base 32 of the clutch pin 9. When this end of stroke is reached once more the spring 33 is subjected to a slight elastic torsion which again has the effect of damping the arrest of the motor 29.
It must be noted that the disengagement of the clutch pin 9 from the counter-profile 42 is facilitated by the tapering conformation of the radial protrusions 17 which limits the contact surface and thus the friction which is created between the clutch pin 9 and the shaft 7 during the retraction of the former into the latter.
The electromechanical control device for an operating cam of a cylinder lock thus conceived is susceptible to numerous modifications and variants, all falling within the scope of the inventive concept; furthermore, all the details are replaceable by technically equivalent elements.
The materials used, as well as the dimensions, may in practice be of any type according to requirements and the state of the art.

Claims

1. An electromechanical control device (1) for an operating cam (2) of a cylinder lock, comprising a shaft (7) fixable to a handle (8), a clutch pin (9) translatable along the shaft (7) for the connection of said handle to said cam (2), a control rod (10) coaxial to the shaft (7), a motor (29) for rotationally operating the control rod ( 10) on itself, characterised in that said clutch pin (9) has an axial cavity (20) in which means are positioned for the transformation of a rotation of the control rod (10) into a reversible translation of the clutch pin (9) along the shaft (7) from a disconnection position to a connection position.
2. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to the preceding claim, characterised in that said control rod (10) extends into said axial cavity (20).
3. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to any one of the preceding claims, characterised in that said clutch pin (9) is rotationally integral with said shaft (7).
4. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to the preceding claim, characterised in that said clutch pin (9) is translatable along an axial cavity (1 1) of said shaft (7) between said disconnection position in which it is completely retracted into the shaft (7) and said connection position in which it projects out of an end of said shaft (7).
5. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to the preceding claim, characterised in that said clutch pin (9) has at least one tapered radial protrusion (17) engaged in a radial recess (18) of the axial cavity (1 1) of the shaft (7).
6. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to any one of the preceding claims, characterised in that said transformation means comprise a slider (23) translatably engaged along the control rod (10), a spherical element (24) to translatably operate the slider (23 ), constrained to said control rod (10) roll ably along a helical track (25 ) which extends around a lateral cylindrical surface (26) of said control rod (10) so as to transform a rotation of the control rod (10) into a translation of the slider (23), and an elastic element for translatably operating said clutch pin (9), fixed to said slider (23 ) and to said clutch pin (9) so as to selectively exert an elastic thrust or traction force on the clutch pin (9) in the direction of the axis of the shaft (7) due to the rotational operation of the control rod (10).
7. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to the preceding claim, characterised in that it has a telescopic construction having a single axis (L) which represents the axis of the handle (8) about which the handle (8) is rotatable on itself, the axis of the shaft (7) about which the shaft (7) is rotatable on itself, the axis of the control rod (10) about which the control rod (10) is rotatable on itself, the axis of the slider (23) along which the slider (23) itself is translatable, and the axis of the clutch pin (9) along which the clutch pin (9) itself is translatable.
8. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to either of claims 6 or 7, characterised in that said elastic element comprises a helical spring (33) arranged coaxially in said cavity (20) of said clutch pin (9).
9. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to any one of claims 6 to 8, characterised in that said slider (23 ) has an axially hollow body having an internal cylindrical surface conjugated to the cylindrical surface (26 ) of the control rod (10).
1 0. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to the preceding claim, characterised in that said slider (23 ) has a through hole (45 ) through the thickness of its said body where said spherical element (24) is positioned.
1 1. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to the preceding claim, characterised in that said helical spring (33 ) is fitted over said slider (23 ) and faces the external side of said hole (45) to retain said spherical clement (24) in said hole (45).
12. The electromechanical control device (1) for an operating cam (2) of a cyl inder lock according to any one of claims 6 to 1 1 , characterised in that said helical track (25) has a semi-circular shaped transversal section with a diameter substantially equal to the diameter of the spherical element (24 ).
13. The electromechanical control device (1) for an operating cam (2) of a cylinder lock according to the preceding claim, characterised in that said helical track (25 ) has shaped ends with hemispherical seats couplable to the spherical element (24).
14. The electromechanical control device for an operating cam of a cylinder lock according to any of claims 6 to 13, characterised in that said control rod (10) is directly keyed onto the small shaft (28) of the operating motor (29) of the control rod (10).
15. A cylinder (3) for a lock comprising at least one electromechanical control device (1) for the operating cam (2) of the lock according to any one of the preceding claims.
EP14707116.1A 2013-02-19 2014-02-18 Electromechanical control device for an operating cam of a cylinder lock Active EP2959081B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000232A ITMI20130232A1 (en) 2013-02-19 2013-02-19 ELECTROMECHANICAL CONTROL DEVICE FOR A CAM OF DRIVING A CYLINDER LOCK
PCT/EP2014/053070 WO2014128099A1 (en) 2013-02-19 2014-02-18 Electromechanical control device for an operating cam of a cylinder lock

Publications (2)

Publication Number Publication Date
EP2959081A1 true EP2959081A1 (en) 2015-12-30
EP2959081B1 EP2959081B1 (en) 2018-03-21

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Application Number Title Priority Date Filing Date
EP14707116.1A Active EP2959081B1 (en) 2013-02-19 2014-02-18 Electromechanical control device for an operating cam of a cylinder lock

Country Status (4)

Country Link
EP (1) EP2959081B1 (en)
ES (1) ES2674523T3 (en)
IT (1) ITMI20130232A1 (en)
WO (1) WO2014128099A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2020015600A1 (en) * 2018-07-16 2020-01-23 南京东屋电气有限公司 Lock cylinder
EP3741934A1 (en) * 2019-05-22 2020-11-25 Astra Gesellschaft Für Asset Management MbH&Co. Kg Locking cylinder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN216617200U (en) * 2021-11-10 2022-05-27 中山市基信锁芯有限公司 Transmission structure and intelligent lock of intelligence lock core
CN218234707U (en) * 2022-08-29 2023-01-06 宁波添宝五金有限公司 Driving mechanism

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Publication number Priority date Publication date Assignee Title
IT1268670B1 (en) * 1994-07-15 1997-03-06 Silca Spa ELECTROMECHANICALLY OPERATED CYLINDER AND KEY UNIT FOR LOCKS
MX9700985A (en) * 1995-06-07 1997-05-31 Master Lock Co Remotely-operated self-contained electronic lock security system assembly.
ES2331865B1 (en) * 2008-07-15 2010-10-28 Salto Systems, S.L. CLUTCH MECHANISM APPLICABLE TO ELECTROMECHANICAL CYLINDERS OF LOCKS.
DE102010018243B4 (en) * 2010-04-23 2012-03-22 ASTRA Gesellschaft für Asset Management mbH & Co. KG Lock cylinder arrangement
ES2393482B1 (en) * 2011-04-14 2013-10-29 Salto Systems, S.L. CLUTCH MECHANISM APPLICABLE TO ELECTROMECHANICAL CYLINDERS OF IMPROVED LOCKS.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020015600A1 (en) * 2018-07-16 2020-01-23 南京东屋电气有限公司 Lock cylinder
EP3741934A1 (en) * 2019-05-22 2020-11-25 Astra Gesellschaft Für Asset Management MbH&Co. Kg Locking cylinder

Also Published As

Publication number Publication date
WO2014128099A1 (en) 2014-08-28
ES2674523T3 (en) 2018-07-02
EP2959081B1 (en) 2018-03-21
ITMI20130232A1 (en) 2014-08-20

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