EP0248064B1 - Lock with loading by electric control by means of an electromagnet - Google Patents

Abstract

Lock (1) with loading by electric control comprising two coaxial parts (32; 52, 41) mounted rotating and of which one is connected to a locking means for its motion and the other to an actuation means; at least one electromagnet comprising a magnet (45) and a coil (46), one of the elements of said electromagnet being mounted turning coaxially to said part to be rotatingly driven from a first to a second angular position when the coil receives an electric pulse; a link element (55) mounted on said first part and adapted to be displaced between one active positive position in mesh with the second part for rotatingly linking said first and second parts and a retracted position and a cam (65) carried by the movable element (46) of the electromagnet and adapted to act on said link element (55) for displacing it from its retracted position to its active position when the movable element (46) of the electromagnet passes from its first angular position to a second angular position.

Description

The present invention relates to the field of locksmithing.

Known from US-A-3,967,846 a door lock which comprises a tubular part coaxially secured with a handle. In order to prevent rotation of this tubular piece and consequently of this handle, a locking finger is provided which is radially movable and carried by the body of the lock. The movement of this locking finger is obtained in one direction by a spring and in its other direction by the magnet of an annular electromagnet whose coil is fixed.

The present invention relates to a lock of a totally different kind. It relates to an electrically actuated lock with the aid of an electromagnet so that either a handle and a bolt of this lock are connected for the operation of this bolt or this handle and this bolt are separated .

To achieve this object, the lock with electrical actuation using an electromagnet according to the present invention comprises:

first and second coaxial parts rotatably mounted in a lock body, one of which is connected to at least one bolt or any other locking means for its movement and the other to a handle or any other means of actuation;

at least one electromagnet comprising a magnet and a coil magnetically coupled, at least one of the elements of this electromagnet being mounted rotating coaxially with said parts to be rotated from a first extreme angular position to a second angular position extreme when the coil receives an electrical pulse;

at least one connecting element mounted on said first part and adapted to be moved between a first and a second extreme position, this connecting element being in its second position engaged with the second part in order to link in rotation at least in one sense said first and second pieces while in its first position said pieces are free to rotate relative to each other;

at least one cam and one cam follower, one of which is carried by the movable element of said electromagnet and the other by said connecting element, this cam and this cam follower being adapted to cooperate so as to move in one direction said connecting element from one of its extreme positions to the other when the movable element of the electromagnet passes from its first angular position to its second angular position, and at least one return means adapted to urge said connecting element in its other direction of movement;

so that, said parts being at corresponding angular positions and being linked in rotation by said connecting element, the movement of the bolt connected to one of said parts is obtained by operating the other part which is connected to the handle .

According to the present invention, preferably, said magnet is fixed and said coil is pivotally mounted coaxially with said parts.

According to the present invention, said magnet and said coil are preferably in the form of ring segments.

According to the present invention, said cam and said cam follower can advantageously be adapted to cooperate so as to move said connecting element from its first position to its second position, said return means being a spring.

In a preferred operating variant, said connecting element is formed by an arm articulated on said first part in an off-center manner and movable radially so that its free end can be brought into engagement with said second part, said cam and said follower. cam being adapted to bias said arm radially.

According to the present invention, preferably, elastic means urge at least one of said parts towards a rest position in which said connecting element can be brought into engagement with the other part when the latter is in at least one position of corresponding rest.

In a preferred embodiment, said lock body comprises a radial plate from which an axial sheath projects; this radial plate carrying laterally, on the side of said sheath, the element fixes the electromagnet; a support, mounted rotatably on said sheath, carrying the movable element of the electromagnet; said first part comprising a radial plate mounted to rotate in said lock body and carrying an arm that is offset and radially movable; said second part comprising an annular part provided with at least one recess; said rotating support and said arm, one having said cam and the other one said cam follower; the free end of said arm being adapted to come into engagement with at least one of the ends of said recess of the annular part of said second part.

The lock according to the present invention may advantageously comprise a lock body having a part coaxial with said parts, in which said fixed radial plate is provided and said cylindrical part of said second part is mounted to rotate; said first part comprising a shaft extending through said sheath and carrying said plate provided with said link arm; said annular part of said second part and said shaft being connected one to an actuating handle and the other to a bolt.

In a variant according to the invention, the actuating handle and the bolt can be coaxial with said parts. In another variant, one of said parts is connected to an actuating handle whose axis is offset from the axis of said coaxial parts, the other part being connected to a bolt.

According to the present invention, it may appear advantageous to provide locking means of the bolt such that, said parts being at corresponding angular positions and said connecting element being in its second position, the latter transmits, in a first phase of the rotary movement of said first part, a movement with intermediate means which act on said locking means in the direction which unlocks the bolt and, in a second phase, causes the movement of the bolt.

• la figure 1 montre une coupe axiale verticale d'une première serrure selon la présente invention, du type tubulaire, montée sur un élément ouvrant tel qu'une porte et en position de repos;
• la figure 2 montre une coupe radiale médiane selon II-II de la serrure de la figure 1, en position de repos;
• la figure 3 montre une coupe radiale selon III-III de la serrure de la figure 1, en position de repos;
• la figure 4 montre une coupe selon IV-IV de la serrure représentée sur la figure 1, en position de repos;
• la figure 5 représente une coupe radiale selon V-V de la serrure de la figure 1, en position de repos;
• la figure 6 représente une coupe radiale selon VI-VI de la serrure de la figure 1, en position de repos;
• la figure 7 représente une coupe radiale selon VI-VI de la serrure de la figure 1, en position armée;
• la figure 8 représente, en vue de dessous et avec arrachements, la serrure de la figure 1, en position armée.
• la figure 9 montre une coupe axiale horizontale d'une seconde serrure selon la présente invention, du type en applique, en position d'ouverture;
• la figure 10 montre une vue extérieure en élévation de la serrure représentée sur la figure 9, montée sur un élément ouvrant;
• la figure 11 montre une vue intérieure en él'évation de la serrure de la figure 9, en position de repos;
• la figure 12 montre une vue intérieure en élévation de la serrure de la figure 9, en position de début d'ouverture;
• la figure 13 montre une vue intérieure en.,.. élévation de la serrure de la figure 9, en position. de fin d'ouverture..
• la figure 14 montre une vue intérieure en élévation d'une troisième serrure selon la pré-,;; sente invention, du type à larder, en position déverrouillée;
• la figure 15 montre la serrure de la figure 14 en position verrouillée;
• la figure 16 montre la serrure de la figure 14 en position finale de déverrouillage;

The present invention will be better understood from the study of several locks with arming by electric control using an electromagnet and with manual actuation, described by way of nonlimiting examples and illustrated by the drawing in which:

• Figure 1 shows a vertical axial section of a first lock according to the present invention, of the tubular type, mounted on an opening element such as a door and in the rest position;
• Figure 2 shows a median radial section along II-II of the lock of Figure 1, in the rest position;
• Figure 3 shows a radial section on III-III of the lock of Figure 1, in the rest position;
• Figure 4 shows a section on IV-IV of the lock shown in Figure 1, in the rest position;
• 5 shows a radial section along VV of the lock of Figure 1, in the rest position;
• 6 shows a radial section along VI-VI of the lock of Figure 1, in the rest position;
• 7 shows a radial section along VI-VI of the lock of Figure 1, in the armed position;
• 8 shows, in bottom view and with cutaway, the lock of Figure 1, in the armed position.
• FIG. 9 shows a horizontal axial section of a second lock according to the present invention, of the surface-mounted type, in the open position;
• Figure 10 shows an external elevation view of the lock shown in Figure 9, mounted on an opening element;
• Figure 11 shows an interior elevation view of the lock of Figure 9, in the rest position;
• Figure 12 shows an interior elevational view of the lock of Figure 9, in the opening start position;
• Figure 13 shows an interior view in., .. elevation of the lock of Figure 9, in position. end of opening ..
• Figure 14 shows an interior elevational view of a third lock according to the pre -, ;; invention, of the bacon type, in the unlocked position;
• Figure 15 shows the lock of Figure 14 in the locked position;
• Figure 16 shows the lock of Figure 14 in the final unlocked position;

and Figure 17 shows the lock of Figure 14 in a rear interior view.

The lock with electrical actuation and manual actuation shown in Figures 1 to 8 and generally identified by the reference 1, is mounted in a cylindrical passage 2 of an opening element such as a door 3, this cylindrical passage being perpendicular to its plane.

The lock 1 is, as can be seen in FIGS. 1, 2 and 8, associated with a locking device generally identified by the reference 4, which extends horizontally and in the median plane of the door 3, perpendicular to the cylindrical passage 2. This locking device 4 comprises a cylindrical part 5 which extends in a cylindrical passage 6 of the door 3 and, at the interior end of the latter, a part of rectangular section 7 which extends in the cylindrical passage 2 of the door 3, radially, and at its front end, a plate 8 which is fixed to the vertical field 9 of the door 3.

This locking device 4 comprises a bolt 10 which is movable in translation between an extended position and a retracted position, perpendicular to the field 9 of the door 3, and which is connected, for its movement, to a ring 11 capable of be rotated along the axis of the cylindrical passage 2 of the door 3, by means of a movement transformation mechanism not shown in the figures and also well known.

In view of its rotational drive, the ring 11 has a rectangular passage 12 whose axis extends along the axis of the cylindrical part 2 of the door 3.

Referring in particular to FIGS. 1 and 8, it can be seen that the lock 1 comprises a hollow lock body generally identified by the reference 13 and which comprises two parts 14 and 15 in the form of opposite bowls. These lock bodies 14 and 15 respectively comprise cylindrical parts 16 and 17 which are engaged just in the cylindrical passage 2 of the door 3 and which are provided with peripheral shoulders 18 and 19 which come to bear against the opposite faces 20 and 21 of the door 3. The lock bodies 14 and 15 also have, at the outer end of their outer parts 16 and 17, radial flanges 22 and 23 provided with axial passages 24 and 25 and the outer face of which is in the form of a trunk cone.

The lock bodies 14 and 15 are also assembled by means of two diametrically opposed screws 26 which pass through the cylindrical part 17 of the lock body 15 and which are screwed into the cylindrical part 16 of the lock body 14 so that their shoulders 18 and 19 are firmly held in abutment on the opposite faces 20 and 21 of the door 3. The inner end of the cylindrical part 16 of the lock body 14 also has two diametrically opposite notches 16a and 16b in which the part extends 7 of the locking device 4, as can be seen clearly in FIG. 2.

The lock 1 also comprises two rotary coaxial parts 27 and 28.

The part 27 is rotatably mounted in the lock body 13 and successively comprises a cylindrical part 29 rotatably mounted through the axial passage 24 of the lock body 14 and the external end of which carries an external actuation handle 30, a radial part 31 adjacent to the radial inner face of the flange 22 of the lock body 14 and a cylindrical part 32 which extends inwards and which is rotatably mounted in the cylindrical part 16 of the lock body 14.

Referring in particular to FIG. 3, it can be seen that the inner face of the flange 22 of the lock body 14 has on a part of its periphery a recess 33 and the radial part 31 of the part 27 has a projecting part 34 which penetrates in this recess 33 so that the part 27 and the handle 30 which it carries can pivot between two extreme positions in which the projecting part 34 abuts at the ends of the recess 33.

In addition, as can be seen in FIG. 1, a spring 35 with circular action is disposed in an annular recess 36 in the axial passage 24 of the flange 22 of the lock body 14, this spring 35 being connected on the one hand to the body of lock 14 and on the other hand to the part 27 so as to urge the part 27 and the handle 30 towards a median angular position.

With particular reference to FIG. 1, it can be seen that the part 28 is formed by an axial shaft which has a part 37 of rectangular section which extends through the passage of rectangular section 12 of the locking device 4 so as to be linked in rotation to the actuating ring 11. The square section portion 37 of the shaft 28 further extends axially in a part 38 of which it is rotationally integral, part 38 which is mounted on the lock casing 15 in the same way as and opposite to the previous part 27 on the lock body 14, with provision as before of a helical return spring 39 and angular stops, and which carries, at its outer end, a handle inner 40 opposite the outer handle 30.

As can be seen in particular in Figure 1, the shaft 28 has, on the other side of the locking device 4, a cylindrical part 41 which is rotatably mounted in a cylindrical sleeve 42 which extends on the side of the external handle 30 from a fixed plate 43 whose periphery is carried by the internal end of the cylindrical part 16 of the lock body 14, this plate 43 being adjacent to the part 7 of the locking device 4 and its peripheral edge having an annular rim having two notches 43a and 43b which correspond to the notches 16a and 16b of the lock body 14. Around the sheath 42 is mounted a rotating support 44, which will be called reel holder, which comprises a socket 45 which carries at a distance and at its periphery a coil 46 in the form of a hollow ring segment having an annular passage 47.

The face of the fixed plate 43, located on the side of the sheath 42 which it carries, has a projecting part 48 situated in its lower part and on which is mounted the lower end of a magnet 49 in the form of a ring segment which plunges into the annular passage 47 of the coil 46. In addition, the end of the sheath 42 opposite the plate 43 carries a stop ring 50 which constitutes a stop in translation for the coil holder 44.

The reel holder 44 rotates between two substantially symmetrical extreme angular positions, located on either side of its top dead center. In one of its extreme positions, known as the "rest position", one of the ends of the coil 46 is in abutment against one end of the projecting part 48 of the plate 43, this position being visible in FIGS. 4 and 6. In its other extreme position, called "active position", a stop 45a, which the outer face of the socket 45 carries on the side of the plate 43, is in abutment against the other end of the projecting part 48 of the plate 43, this position being visible in Figures 7 and 8. In the example, the coil 46 extends substantially over a quarter of a circle and the angular amplitude of its movement is substantially 90 °.

The end of the shaft 28, located on the side of the handle 30 and at the end of its cylindrical part 41, has a part 51 of square section located outside the sheath 42 and on which is fixed a radial plate 52 which consequently rotates with the shaft 28. This radial plate 52 has, at its periphery, a cylindrical part 53 which is rotatably mounted, to form a bearing, in the cylindrical part 16 of the lock body 14, between the cylindrical part 32 of the part 27 and the radial plate 43, this cylindrical part 53 extending in the direction of the plate 43. In addition, the plate 52 has, on its face facing the handle 30, a central annular boss 54. It is therefore noted that the coil 46, the magnet 49 of the projecting part 48 extend between the fixed plate 43 and the turntable 52.

On the outer face of the plate 52 is mounted a connecting element constituted by a hook 55. The lower end of this hook 55 has an axis 56 which is offset from the main axis of the lock, one of the ends of which is rotatably mounted in the plate 52, between its annular boss 54 and its peripheral edge and the other end of which is rotatably mounted in a plate 57 which is fixed on the face of the annular boss 54 facing the handle 30 and on a boss 58 of the plate 52 so that the hook 55 is movable in a radial plane. As can be seen in FIG. 5 in particular, the hook 55 is articulated on the lower part of the plate 52 and, at rest, extends opposite the coil 46.

The hook 55 is biased towards a so-called withdrawal position in which it abuts against a face 59 of the projecting annular boss 54 thanks to a spring 60 which acts between an extension 61 of the hook 55 located on the other side of its axis 56 and one face 62 of the annular boss 54.

After it has been noted that the inner end of the cylindrical part 32 of the part 27 is adjacent to the peripheral edge of the plate 52, it can be seen in particular in FIG. 6 that the free end 63 of the hook 55, when the latter 55 is in its withdrawn position, and at a distance from the internal face of the cylindrical part 32 of the part 27.

As can be clearly seen in particular in FIG. 7, in another so-called active position, the hook 55 is pivoted radially outwards around its axis 56 so that its free end 63 penetrates into a notch 64 in the cylindrical part 32 of the part 27 so as to link in rotation, by means of the hook 55 and the plate 52, the external handle 30 to the shaft 28 for actuating the locking device 4.

As can be seen in FIGS. 6 to 8, the reel holder 44 has a cam 65 which extends from its sleeve and which is adjacent to the face of the plate 52 facing the plate 43.

The hook 55 carries a finger 66 which extends through an oblong passage 67 formed in the plate 52, as well as in the space separating this plate 52 and the plate 43. The active face 65a of the cam 65 is such that when the reel holder passes from its rest position to its active position, the hook 55 passes from its withdrawal position to its active position in which its free end 63 is, in the notch 64, engaged with the cylindrical part 32 of the part 27. Their rest positions are visible in particular in FIG. 6 while their active positions are visible in FIGS. 7 and 8.

In addition, the wires 68 for supplying the coil with electrical energy pass between the projecting annular boss 54 of the plate 52 and the end of the cylindrical part 41 of the shaft 27 and through a semi-annual passage 69 of the radial part of this projecting part 54 of the turntable 52.

The electrically actuated and manually actuated lock 1 shown in Figures 1 and 8 and described above operates as follows.

As the interior handle 40 is permanently linked to the locking device 4 via the part 37 of rectangular section of the shaft 28, it is possible by rotating this handle 40 in one direction or the other, against the spring 39, actuate the bolt 10 of the locking device 4, the plate 52 carrying the hook 55 rotating at the same time while remaining in its withdrawn position. Between each actuation, the shaft 28, the handle 40, and the plate 52, return to an intermediate angular position thanks to the spring 39 and possibly to the return spring of the locking device 4. During these operations of the interior handle 40 , the reel holder 44 and the reel 46, in the idle state, are not stressed.

In the rest state of the reel holder 44 described above, in which the hook 55 is in its withdrawn position, the outer handle 30 can be rotated in one direction or the other, and consequently the part 27 , without actuating the locking device 4, the handle 30 and the part 27 returning to an intermediate angular position between each maneuver.

By sending a suitable electric pulse to the coil 46 by the supply wires 68, the coil carrier 44 is then caused to rotate around the sleeve 42, from its rest position and up to its position active. During this rotation, the active face 65a of the cam 65 carried by the reel holder 44 pushes outward the finger 66 of the hook 55 and consequently rotates the latter around its axis 56 to its active position in which its upper end 63 is engaged in the notch 64 of the cylindrical part 32 of the part 27. In this active position, the handle 30 is linked in rotation to the locking device 4 via the 'part 27, hook 55, plate 52 and shaft 28. Lock 1 is then in its armed position.

By rotating the outer handle 30 in one direction or the other, one can then actuate the locking device 4 and consequently cause the movement of its bolt 10. In a direction of rotation, the hook 55 is pulled while in the other, he is pushed.

So that the end 63 of the hook 55 does not escape from the notch 64 during these movements, the bearing faces of the end 63 of the hook 55 and the peripheral end surfaces of the notch 64 are in an angular position such that the end 63 tends to penetrate into the notch 64 and not to escape from it.

When the coil holder 44 is in its active position, its unbalance can make it possible to maintain the hook 55 in its active position, so that it is not necessary to maintain the electrical impulse in the coil 46. To bring back the reel holder 44 in its rest position, it suffices, ..after a determined time sufficient to operate the handle 30 and actuate the locking device 4, it suffices to send a new reverse pulse to the reel 46. The door - coil 44 having returned to its rest position, we can, however, continue to actuate the locking device 4, owing to the fact that the end 63 of the hook 55 is held in abutment on one of the ends of the notch 64 of the cylindrical part 32. But, as soon as the outer handle 30 is released, the hook 55, under the action of the spring 60, returns to its withdrawn position and the lock is found in its disarmed position in which the actuation in rotation n of the _" external handle 30 does not cause the locking device 4 to be actuated.

In order to develop electrical pulses intended for actuating the coil holder 44 by means of the electromagnet constituted by the coil 46 and the magnet 49, electronic circuits for identifying electronic keys can be provided which can be arranged in the handle 30 and / or in the handle 40, these handles being provided hollow and the shaft 28 having a axial passage 70 allowing the passage of electrical wires from one of the handles into the other. Referring to FIGS. 9 to 13, we will now describe another lock with arming by electrical control and with manual actuation generally identified by the reference 100.

This lock 100 comprises a hollow box of parallelepipedal shape 101 having a first part 102 and a second part 103 having a vertical joint plane 104. This lock box 101 is fixed on the inside of an opening element such that a door 105 so that the vertical wall 106 of the part 102 bears against its inner face.

In its part located, on the side of the vertical upright 107 adjacent to the edge of the door 105, the lock 100 has a horizontal transverse axis 108 which extends through the vertical wall 109 of the body part 103 and which extends also inside an annular sheath 110 provided projecting from the vertical wall 106 of the body part 102, this horizontal axis 108 being mounted to rotate freely. It can be noted that the sheath 110 and the vertical wall 106 of the body part 102 are equivalent to the sheath 42 and to the plate 43 of the lock shown in FIGS. 1 to 8.

On the end of the horizontal axis 108, is mounted, outside the lock body 101, a vertical plate 111 which, as can be seen in FIG. 10, allows during the rotation of the axis 108 d 'actuate a bolt system comprising a horizontal bolt 112 and two vertical bolts 113 and 114 by rotation in one direction of the arrow for opening or in the other direction for locking.

In its part remote from the fixed vertical upright 107, the lock 100 has an external toothed wheel 115 which is rotatably mounted inside the body part 102 along an axis parallel to the axis 108. This toothed wheel 115 has a cylindrical projecting part 116 which extends through the vertical wall 106 and through a passage 117 provided in the door 101, this annular projecting part 116 carrying, outside the door 108, a handle d actuation 118. In addition, the toothed wheel 115 is subjected to a spiral spring 119 which biases the latter as well as the handle 118 towards an intermediate stable position, rotational stops not visible in the figures being provided to limit their movement in two-way rotation, as in the previous example.

In the lock body 101 is provided, freely rotatably mounted coaxially with the shaft 108, a ring 120 toothed at its periphery and meshing with the toothed wheel 115, this toothed ring 120 having laterally, on the side of the body part 103 , a projecting part 121 forming a stop.

As in the previous example, the lock 100 has an electromagnet generally identified by the reference 121, the coil holder and the magnet of which are mounted respectively on the sheath 110 and on the paro-vertical 106 of the body part 102, as well as an articulated arm 122, equivalent to the hook 55. This hook 122 extends between two plates 123 and 124 on which it is articulated decentered by an axis 125, these plates being mounted free to rotate on the axis 108 and the arm 122 carrying a lateral finger 126 which passes through an oblong passage 127 provided in the plate 123 to extend over the path of the coil holder cam of the electromagnet 121 , like before. In addition, the plate 123 adjacent to the end of the sheath 110 has at its periphery an annular part 128 which extends between the annular path of the coil holder of the electromagnet 121 and the toothed ring 120 and which is mounted rotating in an annular part projecting from the vertical wall 105 of the body part 102. The plate 123 also has, at its periphery, a projecting part forming a stop 130.

Between the plates 123 and 124, the axis 108 carries a plate sector 131 which has at its periphery a notch 132. This plate sector 131 has two opposite radial faces 133 and 134 which are capable of coming to bear respectively on two surfaces radial 135 and 136 of the double plates 123, 124, an angular clearance a being provided.

A locking hook 137, articulated by a horizontal axis 138 mounted on the body 101, has a free end 139 adapted to penetrate into the notch 132 of the plate sector 131 linked to the axis 108 so as to lock the latter in rotation. . The hook 138 is biased towards this locking position by a spring 140 and laterally carries a finger 141 which extends at the periphery of a cylindrical surface 142 of the plate 124, a notch 143 being provided in this surface 142.

The lock 100 shown in Figures 9 to 12 operates as follows.

The bolts 112, 113 and 114 being in their locking position as shown in Figure 10, that is to say in the extended position, the lock 100 is in the following state, shown in Figure 11. The handle 118 is in its intermediate rest position and the stop 121 of the toothed ring 120 connected to the handle 118 via the toothed wheel 115 is also in an intermediate angular position of rest. The link arm 122 is in its withdrawn position. The end portion 139 of the locking lever 137 is engaged in the notch 132 of the plate sector 131 carried by the pin 108 so that the latter is locked and keeps the bolts 112, 113 and 114. The face 136 of the plate sector 131 is in abutment against the face 134 of the double plates 123, 124 so that their face 133 and 135 are at a distance and separated by the angular play a. The lateral finger 141 of the locking lever 137 is engaged in the notch 143 provided at the periphery of the sectoral plate 124. The bolts 112, 113 and 114 are locked and the handle 118 can be pivoted in one direction or the other without produce an effect, the toothed ring 120 pivoting at the same time.

As in the previous example, by sending a pulse to the electromagnet 121, the link arm 122 is pivoted outwards towards its active position in which its end 144 comes opposite the end 145 of the stop 121 carried by the toothed ring 120. By rotating the handle 118 in a first direction from its rest position, the toothed ring 120 connected to the handle 118 by means of the toothed wheel 115 drives in rotation of the double plates 121, 124 via the link arm 122. In a first phase of the movement, the finger 141 of the locking lever 137 leaves the notch 143 and comes to bear on the peripheral surface 142 of the sectoral plate 124 so that the end 139 of the locking lever 137 leaves the notch 132 of the sectoral plate 131 carried by the axis 108 so that the latter is released, and at the same time the radial face 135 provided between the double plate at 123 and 124 is brought into abutment against the face 133 of the sectoral plate 131 by taking up play a.

Continuing the rotational movement, the axis 108 is rotated until the toothed wheel 115 comes against one of its stops, the bolts 112, 113 and 114 being at the same time brought to their withdrawal position by rotation of the plate 111 to which they are connected. FIG. 12 shows the lock at the end of the first phase of the rotational movement, the lever 137 being unlocked and FIG. 13 shows the lock 100 at the end of the operation of the bolts towards their withdrawal position.

When the handle 118 is released, it returns to its intermediate rest position and the stop 121 carried by the toothed ring 120 returns at the same time to its intermediate rest position in which the opposite face 146 of the stop 121 comes to bear against the stop 130 provided at the periphery of the plate 121, an electrical pulse in the opposite direction being sent to the electromagnet as in the previous example and the link arm 122 returning to its withdrawn position.

To replace the bolts 112, 113 and 114 in their advanced locking position, the handle 118 is turned in its other direction of rotation. The stop 121 of the toothed ring 120 rotates, by bearing at its end 146 against the stop 130, the double plates 123, 124. After taking up the angular play a, the radial face 136 of the double plate 123, 124 comes to bear against the radial face 134 of the plate sector 131 linked to the axis 108 and this axis 108 is thus driven in rotation. When the handle 118 reaches the end of the race in which the toothed wheel 115 is in abutment, the lock 100 is found in the state shown in FIG. 11 described previously in which the axis 108 connected to the bolt 112, 113 and 114 is locked by means of the locking lever 137 and these bolts are in their extended position.

It can therefore be seen that, as in the example described with reference to FIGS. 1 to 8, the link arm 122 is carried by a part constituted by the double plates 123 and 124 which is connected to the bolts 112, 113 and 114 and that the end of this link arm 122 cooperates with a part constituted by the toothed ring 120 which is connected to the handle 118. In the lock 100 however, the axis of the handle 118 is offset with respect to these two coaxial parts 120 and 123, 124 and there is further provided a bolt locking system which is biased via the link arm 122.

Referring now to FIGS. 14 to 17, a lock will be described generally identified by the reference 200.

As can be seen in FIG. 17, this lock 200 is of the larding type and with two bolts. It comprises a lock body generally identified by the reference 201, of parallelepiped shape, which has two opposite parts 202 and 203 having a vertical joint plane extending parallel to the plane of an opening element such as a door 204 in which the lock body 201 is embedded, this lock body 201 being provided with a plate 205 fixing on the field of the door 204.

In its upper part, the lock body 201 is crossed by a square axis 206 whose ends carry, on either side of the door 204, two opposite handles 207 with crutches.

A radial plate 208, mounted on the square axis 206 in the lock body 201, has laterally a cylindrical annular part 209 which is rotatably mounted in the body part 202.

Inside the cylindrical part 209, there is provided, as in the previous example, an electromagnet 210 whose coil holder is mounted rotating on a sheath projecting from the vertical wall 211 of the part body 202 and whose electromagnet is fixed on the latter. In addition, the plate 208 connected to the axis 206 carries, on the side of the cylindrical part 209, a link arm 212 which is articulated in an eccentric manner by an axis 213.

On a part of its circumference, the cylindrical part 209 has a toothed part 214 which is engaged with a toothed wheel 215 mounted on an axis 216 parallel to the axis 206, this toothed wheel 215 being subjected to a spiral spring 217 towards A stable intermediate position. The artgutatre race of this toothed wheel 215, on either side of its rest position, is moreover limited by stops not shown. Thus, the axis 206 which carries handles 207 has an intermediate rest position and can be pivoted in both directions up to the stops associated with the toothed wheel 215.

Around the cylindrical part 209 and opposite the link arm 212, there is provided a ring -218 which is rotatably mounted in the body part 203 and which obviously has an interior 219 into which the end can penetrate. free 220 of the hook 212, the cylindrical part 209 carried by the plate 208 having a passage 221 for the link arm 212.

The annular ring 218 has, in its lower part, a toothed part 222 which is engaged with the toothed part 223 of a ring 224 mounted rotating on a horizontal axis 225 carried by the body parts 202 and 203.

The ring 224 carries a finger 226 which extends downwards and the end of which is capable of coming into a notch 227 of a locking bolt 228 and moving horizontally, when it is rotated in one direction or the other , this bolt 228 between an extended position and a retracted position, perpendicular to the axis 206.

The ring 224 further carries a finger 229 which extends downwards and which is capable, during its rotation, of acting on a plate 230 subjected upwards by a spring 231, this plate 230 being mounted vertically movable in the lock body 201 and having, on the other side of the bolt 228, another vertical plate 232 in which are provided notches 233, these notches being adapted to receive pins 234 carried laterally by the bolt 228 when the plates 230 and 232 are in their high position. The system composed of plates 230 and 232 and pins 234 is a system for locking the bolt 228 in its extended position and in its retracted position.

In addition, the lock 200 has a second bolt 235 parallel to the bolt 228 is subjected towards its extended position by a spring 236. This bolt 235 is capable of being brought from its extended position to its withdrawal position by means of a finger 237 provided at the periphery of the cylindrical part 208 connected to the axis 206 each time the crutch handles 207 are maneuvered downwards, the finger 237 coming to cooperate with a vertical face 238 provided in the bolt 235.

The lock 200 shown in Figures 14 to 17 operates as follows.

In the position shown in Figure 14, the link arm 212 is in its rest position and the bolt 218 is in its withdrawn position and is locked by the plate 232 which is in its high position and which cooperates with the lateral fingers 234 of this bolt.

By rotating the handles 207 upwards against the spring 217, nothing happens. On the other hand, by pivoting the handles 207 downwards, the bolt 235 is maneuvered from its extended position towards its withdrawal position against the spring 236. It is then possible to use the fitting 200 in the conventional manner to open or close door 204.

From the position shown in FIG. 14, an electric pulse is sent to the electromagnet 210 and the latter moves the link arm 212 from its withdrawn position to its active position, as in the previous examples, in which its end 220 penetrates into -the recess 219 provided in the cylindrical ring --- than 218. By pivoting upwards the handles 207, the end 210 of the link arm 212 comes to bear against one of the ends of the recess 219 and the latter is driven in rotation and causes the ring 224 to rotate. Being done, in a first phase, the finger 225, carried by the ring 224, pushes down the plate 232 by acting on the upper edge of the plate 230 and causes the bolt 228 to be unlocked and, in a second phase, the finger 226 engages in the notch 227 of the bolt 228 and causes it to move towards its extended position. In end of. stroke, the plate 230 is brought up so that the plate 232 comes into engagement with the fingers 234. The bolt 228 is then locked in its extended position. This state of the lock 200 is shown in FIG. 15. During this maneuver, the upper bolt 235 has not changed position.

The electromagnet 210 having received a return pulse, when the handles 207 are released, the latter return to their intermediate rest position and the link arm 212 returns to its withdrawn position. The door 204 is then in the locked position by the bolt 228 and any operation of the handles 207 only allows the operation of the upper bolt 235.

By returning a pulse to the electromagnet 210, the connecting arm 212 is again placed in its position in which its end 220 is in the notch 219 of the annular ring 218. By maneuvering the handles 207 downwards, the free end 220 of the link arm 212 engages the other end of the notch 219 and drives this ring 218 in the opposite direction to the previous direction. In doing so, the finger 226 carried by the ring 224 acts on the plate 230 and the locking plate 232 in the opposite direction to the previous direction and the finger 229 also carried by the ring 224 ensures the operation of the bolt 228 from its extended position to its withdrawal position. At the same time, the finger 237 carried by the plate 208 connected to the axis 206 operates the bolt 235 to its withdrawal position. The lock 200 is found in the state shown in Figure 16 in which the bolts 228 and 235 are both in their withdrawn position.

When the handles 207 are released, the electromagnet 210 having received a return pulse, the link arm 212 returns to its withdrawal position, the handles 207 return to their intermediate rest position and the bolt 235 returns to its exit position. The lock 200 is then found in the state shown in FIG. 14.

It will be noted that in the example shown in Figures 14 to 17, unlike the previous examples, the link arm 212 is carried by the part constituted by the plate 208 which is connected to the handles 207 while the part constituted by the ring 218 in which the recess 219 is provided, with which the link arm 212 cooperates is connected to the bolt 228 and that a locking system constituted by the plate 232 and the fingers 234 ensures the bolt 228 is held in its position exit and its withdrawal position and is biased via the link arm 212.

The lock 200 is also supplemented by a direct operating system for the bolt 228 which comprises an operating button 239 which extends outside the door 204 and the axis 240 of which passes through the body part 202 carries a toothed sector 241 in engagement with a toothed sector 242 provided on the intermediate ring 224. The operation of the button 239 makes it possible to cause the operation of the bolt 228 by means of the fingers 226 and 229 as previously, the rotation of the intermediate ring 224 also acting only on the ring 218 which rotates freely.

Claims (10)

1. Armoured lock (1; 100; 200) electrically controlled by means of an electromagnet, characterized in that it comprises a first and a second coaxial piece (27, 28) rotatably mounted in a lock body, of which one is connected to at least one sliding bolt or any other means of locking (4) as a result of its movement and the other is connected to a handle or any other actuation means (30);

at least one electromagnet comprising a magnet (49) and a coil (46) which are magnetically coupled, at least one of the elements of this electromagnet being rotatably mounted in a coaxial manner to said pieces so as to be pulled in a rotating manner from a first end angular position to a second end angular position when the coil receives an electric pulse;

at least one linking element (55) mounted on said first piece and adapted so as to be moved between a first and a second end position, this linking element (55) being in engagement in its second position with the second piece in order to rotatably link in at least one direction said first and second pieces, whereas, in its first position, said pieces are free in terms of rotation in respect of one another;

at least one cam (65) and a cam follower (66), of which one is borne by the movable element (44, 46) of said electromagnet and the other by said linking element (55), this cam (65) and this cam follower (66) being adapted so as to cooperate in such a way that they move in one direction said linking element (55) from one of its end positions to the other when the movable element (44, 46) of the electromagnet passes from its first angular position to its second angular position, and at least one means of return movement adapted so as to attract said linking element in its other direction of movement;

in such a way that, said pieces being in the corresponding angular positions and being rotatably linked by said linking element, the movement of the sliding bolt connected to one of said pieces is obtained by manoeuvring the other piece which is connected to the handle.

2. Lock according to Claim 1, characterized in that said magnet (49) is fixed and said coil (46) is mounted in a coaxially pivoting manner to said pieces (27, 28).

3. Lock according to one of the preceding claims, characterized in that said magnet (49) and said coil (46) are in the form of ring segments.

4. Lock according to any one of the preceding claims, characterized in that said cam (65) and said cam follower (66) are adapted so as to cooperate in such a way that they move said linking element (55) from its first position to its second position, said means of return movement being a spring (60).

5. Lock according to any one of the preceding claims, characterized in that said linking element is formed by an arm (55) articulated on said first piece (28) in an offset and radially movable manner in such a way that its free end (63) can be brought into engagement with said second piece (27), said cam (65,) and said cam follower (66) being adapted so as to attract said arm (55) radially.

6. Lock according to any one of the preceding claims, characterized in that elastic means attract at least one of said pieces (27, 28) towards a resting position in which said linking element (55) can be brought into engagement with the other piece when the latter is in at least one corresponding resting position.

7. Lock according to any one of the preceding claims, characterized in that said lock body comprises a radial plate (43), from which an axial bushing (42) projects, this radial disc (43) bearing laterally, on the same side as said bushing, the fixed element (49) of the electromagnet; a support (44) rotatably mounted on said bushing (42), bearing the movable element (46) of the electromagnet; said first piece comprising a radial disc (52) rotatably mounted in said lock body and bearing an arm (55) articulated in an offset and radially movable manner; said second piece (27) comprising an annular part (32) provided with at least one recess (64); said rotatable support (44) having said cam (65) and said arm (55) having said cam follower (66); the free end of said arm (55) being adapted so as to engage with at least one of the ends of said recess (64) of the annular part (32) of said second piece (27).

8. Lock according to Claim 7, characterized in that it comprises a lock body having a part (14) which is coaxial in relation to said pieces, in which lock body said fixed radial disc (43) is provided and said cylindrical part (32) of said second piece (27) is rotatably mounted; said first piece comprising a spindle (28) extending through said bushing (42) and bearing said disc (52) provided with said linking arm (55); said annular part (32) of said second piece (27) being connected to an actuating handle (30) and said spindle being connected to a sliding bolt (7).

9. Lock according to any one of Claims 1 to 8, characterized in that one of said pieces (120; 208) is connected to an actuating handle (118; 207) of which the axis (116; 206) is offset in relation to the axis of said coaxial pieces, the other piece (108; 218) being connected to a sliding bolt (112; 228).

10. Lock according to any one of the preceding claims, characterized in that it comprises locking means (137,131; 232, 234) of the sliding bolt (112; 228) such that, said pieces being in corresponding angular positions and said linking element being in its second position, the latter transmits, in a first phase of the rotational movement of said first piece, a movement to intermediate means which act on said locking means in the direction which releases the sliding bolt and, in a second phase, brings about the movement of the sliding bolt.

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