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
  • E05B47/0657—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like
  • E05B47/0665—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like radially
  • E05B47/0669—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like radially with a pivotally moveable blocking element
• • 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
  • E05B15/004—Lost motion connections
• • 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
  • E05B47/0006—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a non-movable core; with permanent magnet

Definitions

• the present invention relates to an electrical device for controlling the unlocking of a rotating shaft of a lock as well as the lock equipped with this device.
• the invention applies to locks mounted in a door handle or in a closing loop of a container with controlled access.
• the problem of access control is more and more frequent, as in computer rooms, clean rooms, or even factory control stations.
• GB-B-2 230 550 describes a keeper with means for blocking the operation of a door handle comprising a pivoting lever and a blocking finger of said lever. This finger is operated by a plate designed to cooperate with an electromagnet.
• a slope is made on the lever and the finger is equipped with a roller which rolls on the slope.
• the door can still open.
• the device according to the present invention is quite different. It includes electromagnetic means which ensures the unlocking of a rotating shaft.
• This device is simple and therefore reliable, it requires a very small amount of current for each operation so that the operating life of the device is increased for the same energy reserve which is necessarily a battery when the device is autonomous.
• the overall dimensions of the handle or the loop which uses this device is reduced, which facilitates its integration into a plate of small width because this parameter is particularly restrictive, and of acceptable thickness while allowing to respect standard fixing centers. This advantage is particularly appreciable when it comes to replacing existing handles.
• the invention relates to an electrical device for controlling the unlocking in rotation of a rotating shaft of a lock, in particular integral with at least one door handle, said lock or said handle being equipped with means for detecting identification signs, in particular of a magnetic or chip card reader, said means being able to emit a trigger signal, a device which is characterized in that it comprises mechanical means for locking / unlocking the rotating shaft, means for emitting at least one electrical pulse following the reception of a trigger signal and electromagnetic unlocking means provided for receiving said pulse, these means being a suction cup with current emission.
• the suction cup more particularly comprises a permanent magnet and a circuit for generating a magnetic field canceling at least part of the magnetic field of the permanent magnet upon receipt of the electric pulse.
• the mechanical locking / unlocking means comprise a counterplate intended to cooperate with the suction cup between two positions, one glued against the suction cup when it is in its magnetic field and the other separated from the suction cup when it is outside the magnetic field, as well as a reset lever on the one hand secured to said counter-plate and on the other articulated in a casing, as well as a strut also movable relative to the casing between a first locking position and a second unlocking position of the rotating shaft.
• the resetting lever comprises a flat surface, coming from manufacturing, which constitutes the counter-plate.
• the reset lever comprises a lug released from the strut when the counterplate is in the first position and in abutment against the strut when the counterplate is in the second position.
• the mechanical means comprise a follower with a finger and the reset lever comprises a cam adapted to receive the finger and ensure the lifting of the lever.
• This follower comprises at least one recess with a profile conjugate to that of the free end of the strut to cooperate in the locked position, providing a free maneuvering game of small amplitude.
• These mechanical means include elastic return means arranged between the strut and the reset lever.
• the device comprises a cassette supporting at least the mechanical locking / unlocking means and the suction cup with current emission of the electromagnetic unlocking means.
• the invention also covers the door handle fitted with the preceding device and which further comprises a second follower provided with a drive pin for the first follower, itself provided with a light for receiving said pin, this second follower being secured to the interior stand and comprising at least one slope intended to bring the strut from the first locked position to the second unlocked position.
• the lumen of the second follower is of such dimensions that the first follower is driven when the strut is released from the first follower.
• FIG. 1 a front view of the entire device according to the invention when the cleanliness plate is partially torn off, in the case of a door on the left,
• FIG. 2 a front view identical to that of FIG. 1, but in the case of a door with opening on the right,
• FIGS. 3A to 3G a block diagram of the operation of the device showing the different movements of the parts during the different phases
• FIGS. 4A and 4B a view, through the door, of a handle, when the crutches of the handle are with separate operation
• FIG. 5A to 5C a view of an alternative application with a rotating axis which drives an immobilizing rack.
• Figures 1 and 2 there is shown a door handle 1 0 with a housing 1 1 receiving a cassette 1 2 on which is reported a source 1 4 of energy with a circuit 1 6 electronic recognition and control, electromagnetic means 1 8 for locking / unlocking as well as mechanical means 20 for locking / unlocking the rotary axis of a lock, the assembly being covered by a plate 22 of so-called cleanliness of the land.
• the housing 1 1 is intended to be fixed to the door by two holes 24, with standard spacing.
• the source 1 4 of electrical energy is a battery 26.
• the electronic circuit 1 6 for recognition and control is connected by a cable 28 to other members (not shown) which are not of direct interest to the invention, namely a card or chip reader or any other means of recognition and identification and a vibrator intended to emit a its particular to confirm the good or bad maneuvers of the user.
• the electromagnetic locking / unlocking means 1 8 comprise an electromagnetic suction cup 32 with current emission, designed to receive a metallic, magnetic counter-plate 34, capable of being held in a first position glued against the suction cup 32 and of being released in a second position.
• This type of suction cup includes a high-power permanent magnet which ensures a constant magnetic force sufficient to keep the backplate, or any other metallic and magnetic flat element, glued as soon as it is in the area of attraction.
• a current is circulated in an associated winding disposed in said suction cup, it is possible to generate an electromagnetic field whose intensity is calculated to cancel at least in part, the permanent magnetic force generated by the magnet, so that the counterplate is only subjected to the permanent magnetic force minus the electromagnetic force generated during the emission of a current pulse.
• the mechanical locking / unlocking means comprise the counter plate 34 which receives at its lower part a reset lever 36 which is articulated relative to the cassette by means of an axis 38, with limited angular movement.
• the lever could be shaped so that it has a surface similar to that of the counterplate, thus enabling this counterplate to be eliminated.
• a seal 40, O-ring makes it possible to make up for any defects in parallelism between the counter-plate and said lever and this is in particular the advantage of this counter-plate.
• the connection between the counterplate and the suction cup provides a certain angular movement, so that the force of the permanent magnet is exerted on the entire surface of the counterplate by self-orientation thereof.
• This lever of the mechanical locking / unlocking means 20 has a lug 42, the usefulness of which will be determined during the description of the operation.
• the lever carries at its end, a reset cam 44 belonging to the reset means.
• the articulation is reduced to its simplest expression since the heel of the strut is simply supported on the bottom of a housing 48 whose walls provide guidance.
• a return spring 49 is interposed between the reset lever and the strut.
• the mechanical locking / unlocking means 20 additionally comprise a follower 50, having substantially the shape of a disc, pivotally mounted about an axis 52.
• This follower is provided at its center with a hole 54 with a square section, provided to receive, in known manner a square axis of operation, called “square", itself driven by a stand, visible in broken lines in Figure 3A. This square allows the drive of the rotary shaft of the lock.
• This follower 50 is symmetrical and has a finger 56 oriented, in a stable position, along the vertical axis. On either side of this finger, also symmetrically, substantially at 90 °, a recess 58 is provided. Depending on the mounting opening to the right or to the left, the corresponding recess is able to cooperate with the free end of the strut 46, in the locked position as will be explained later. Indeed, only one of the setbacks is necessary for a given assembly, the presence of the two setbacks being justified only by the possibility of carrying out assemblies for door opening on the right or on the left as shown in Figures 1 and 2.
• FIGS. 3A to 3G the references of identical elements being given in the various figures.
• FIG. 3A the stand is shown in broken lines. This crutch is inclined at an angle which is exaggerated for the purposes of representation but which remains on the order of a few degrees, 3 to 5 ° to give a representative value.
• This very low rotation is authorized by a clearance provided between the free end of the strut 46 and the corresponding recess 58 with which the follower 50 is provided.
• This game allows the user to feel that the operation is possible but that a locking system prohibits a larger angular operation allowing the door to be opened. This prevents the user from exerting excessive force, imagining that the stand is jammed by a malfunction. In addition, this safely allows repositioning of the strut in the hook of the follower.
• the strut ensures the locking of the mechanical means and more particularly of the nut 50. It is furthermore noted that in this position, the counterplate is glued against the suction cup in the first position of reminder, the permanent magnet ensuring its full attraction.
• the reset lever 40 integral with the counter plate 34, is also in its first position so that the spring 49 is tensioned, the restoring force exerted being maximum.
• the strut tends to be kept in the first unlocking position even when the crutch is actuated with impact or in the event of impact on the handle.
• FIG. 3B The position of the various organs which results therefrom is shown in FIG. 3B.
• the spring 49 which exerts a continuous traction between the counter plate 34 and the strut 46, causes the said counter plate to come off from the suction cup.
• the permanent magnet regains all its power and emits its magnetic field in the normal way.
• the counter-plate, detached from the suction cup is at too great an air gap distance for the counter-plate to be recalled, especially since said counter-plate is always subjected to the return force of the spring.
• the lug 42 of the reset lever is distant from the strut in a stable position, so as to allow detachment of the counterplate and the angular movement of the lever even if the strut is blocked in the first position.
• the system is unstable around the axis of rotation 38 of the reset lever.
• the reset lever approaches the finger 56 of the follower 50 while the strut is separated, allowing the rotation of the follower.
• the strut is maintained in the second position with impossibility of blocking the rotation of the follower as shown in Figure 3D.
• the rearming is obtained after a small angular stroke to be certain of obtaining rearming in all cases taking into account the different arrangements of locks and existing games, in particular those between the opening and the frame.
• FIG. 3F it can be seen that the cam is extended with a curvilinear profile corresponding to the movement of the end of the finger of the follower, this in order to avoid in all cases the passage of the finger behind the cam if the user, by an untimely maneuver, the crutch came to exceed the authorized angular rotation.
• the keeper, not shown, of the door is actuated upon opening, this in known manner.
• the strike return means ensure a return to the stable position of the follower and the return to the initial position of the stand which is integral therewith, as shown in FIG. 3G.
• the next position is that of the initial figure 2, thus showing the complete cycle.
• the force stored by the spring is supplied by the user when he operates the stand, the suction cup only needing to unlock the mechanism by releasing the counterplate.
• the operation of the crutches of the two handles is separate.
• the square is then produced in two parts, one secured to the first follower as shown above and the other secured to a second follower 60, the two followers 50 and 60 being driven in rotation by a pin 62, as shown on the Figure 4A.
• the first follower 50 shown in broken lines, has for this purpose a curved, open lumen 64 which receives the pin 62.
• This lumen of the first follower is of a size such that it allows an angular displacement of the second follower by a few degrees before being trained by him, for example 10 °.
• the second follower also comprises two slopes 66, only one of which is used, the second, symmetrical being produced for the purposes of symmetry and reversibility.
• the slope 66 concerned is formed substantially with the same angular positioning as the recesses 58 of the first follower so as to be able to cooperate with the free end of the strut 46.
• this second follower is free of fingers.
• the mechanical means 20, the electromagnetic means 1 8 and the means for emitting an electrical pulse on the same side of the door have been presented, but the means for emitting an electrical pulse, for example, can be arranged from the side of the door opposite to that which supports the rest of the device. This ease of arrangement makes it possible to distribute the dimensions if necessary.
• FIG. 5A there is shown an arrangement of the same device applied for example to a lock of a container.
• the corresponding diagram shows how the device works in this arrangement.
• FIG. 5A there are certain identical and previously described elements and the same references are assigned to these elements for simplification of the drawings while the equivalent elements bear the same references increased by 1 00 and the new elements carry references from 200.
• the follower 1 50 is modified by the presence of a toothing 210 in the lower part intended to mesh with the teeth of a rack 21 2.
• This rack is guided in translation by any suitable means which is not part of the present invention and which falls within the competence of a person skilled in the art depending on the application.
• the follower 1 50 In the standby position, as shown in Figure 1, the follower 1 50 is oriented with his finger 1 56 vertical.
• the rack 21 2 is in place and its teeth cooperate with those carried by the follower 1 50.
• the strut 1 46 ensures the locking in rotation of the follower so that it is impossible to remove the rack 21 2.
• the spring 1 49 which exerts a continuous traction between the counter plate 1 34 and the strut 1 46, causes the detachment of said counter plate from the suction cup.
• the permanent magnet regains all its power and emits its magnetic field in the normal way.
• the counterplate, detached from the suction cup is at too large an air gap distance for the counterplate to be recalled, especially since said counterplate is always subjected to the spring return force.
• the user then causes the withdrawal of the rack by a simple pull in the direction of the arrow 21 6, as shown in Figure 5C.
• it is proposed to add a spring 21 4 which causes the rotation of the follower 1 50 in a clockwise direction, which ejects the rack.
• This rack can be made integral with a strap or any other link while the electrical unlocking control device according to the invention is integral with another strap or any other link.
• the two parts can be integral with a flap of a container on the one hand and the container itself on the other.

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• Lock And Its Accessories (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9515162

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (2)

Citations (6)

Family Cites Families (2)

• 1997
  • 1997-12-19 FR FR9716541A patent/FR2772817B1/fr not_active Expired - Fee Related
• 1998
  • 1998-12-15 EP EP98962472A patent/EP1040243B1/de not_active Expired - Lifetime
  • 1998-12-15 ES ES98962472T patent/ES2251117T3/es not_active Expired - Lifetime
  • 1998-12-15 WO PCT/FR1998/002742 patent/WO1999032744A1/fr active IP Right Grant
  • 1998-12-15 AU AU17638/99A patent/AU1763899A/en not_active Abandoned
  • 1998-12-15 DE DE69831688T patent/DE69831688T2/de not_active Expired - Fee Related

Patent Citations (6)

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