EP2885473B1 - Self-reclosing lock - Google Patents
Self-reclosing lock Download PDFInfo
- Publication number
- EP2885473B1 EP2885473B1 EP13737229.8A EP13737229A EP2885473B1 EP 2885473 B1 EP2885473 B1 EP 2885473B1 EP 13737229 A EP13737229 A EP 13737229A EP 2885473 B1 EP2885473 B1 EP 2885473B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- self
- spring latch
- organ
- support zone
- distributor
- 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.)
- Active
Links
- 210000000056 organ Anatomy 0.000 claims description 42
- 238000000605 extraction Methods 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 10
- 230000010355 oscillation Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 6
- 230000002441 reversible effect Effects 0.000 claims description 4
- 230000000284 resting effect Effects 0.000 description 7
- 230000004913 activation Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
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
- E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
- E05B47/026—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means the bolt moving rectilinearly
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B55/00—Locks in which a sliding latch is used also as a locking bolt
- E05B55/12—Locks in which a sliding latch is used also as a locking bolt the bolt being secured by the operation of a hidden parallel member ; Automatic latch bolt deadlocking mechanisms, e.g. using a trigger or a feeler
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/18—Locks or fastenings with special structural characteristics with arrangements independent of the locking mechanism for retaining the bolt or latch in the retracted position
- E05B63/20—Locks or fastenings with special structural characteristics with arrangements independent of the locking mechanism for retaining the bolt or latch in the retracted position released automatically when the wing is closed
- E05B63/202—Locks or fastenings with special structural characteristics with arrangements independent of the locking mechanism for retaining the bolt or latch in the retracted position released automatically when the wing is closed a latch bolt being initially retained in an intermediate position and subsequently projected to its full extent when the wing is closed
Definitions
- the present invention relates to a self-reclosing lock.
- electro-pistons Electric self-reclosing locks known as electro-pistons have been on the market for some time, which envisage a single closure element, a spring latch or alternatively a bolt, activatable independently through the handle follower or through the cam of the cylinder for the key or even through an electric control.
- the electro-piston in the spring latch version, has a limited extraction position and an extended extraction position wherein a mechanism locks the spring latch in such a way that it can act as a bolt.
- Such a locking mechanism in some solutions is activatable by pressing the charge piston, whereas in other solutions, it is activatable by pressing the charge piston and the spring latch simultaneously.
- One of the main drawbacks of a traditional spring-latch electro-piston therefore consists of the fact that in the event of accidental or malicious activation of the locking mechanism of the spring latch when the door is open, during the closure of the door the spring latch can hit the door jamb that delimits the doorway and get damaged or damage it badly.
- EP 1 840 303 A2 discloses an auxiliary bolt arrangement including a restraining member, which the auxiliary bolt in its protruding position is arranged to press against the force of a spring to a position, in which the restraining member prevents the movement of the latch bolt to its outermost protruding position.
- the latch bolt is arranged to retain the restraining member in said position, if solely the auxiliary bolt is being pressed inside the lock casing.
- DE 541 556 C discloses a self-relocking lock according to the preamble of claim 1.
- the technical task of the present invention is, therefore, to provide a self-reclosing lock which obviates the above-described technical drawbacks of the prior art.
- an object of the invention is to provide a self-reclosing lock with extremely secure operation, mechanically burglar proof and adaptable in a versatile way to various applications.
- Another object of the invention is in particular to provide a spring-latch electro-piston with extremely secure operation, suitable to exclude or obstruct accidental or malicious tampering which could cause damage, extremely mechanically resistant to combined bending and compressive stress, and universally adaptable to a wide range of centre-to-centre distances between the front plate applied to the lock box and the counter-plate on the door jamb.
- a self-reclosing lock comprising a box in which a spring latch is housed, translatable in contrast and by the action of a first elastic element between a retracted position, a limited extracted position and a fully extracted position from the box, a charge piston translatable in contrast and by the action of a second elastic element between a retracted position and an extracted position from the box, said self-reclosing lock comprising inside the box an oscillating distributor element having a first organ operatively engaged with the spring latch for its drive and deadlocking, and a second organ cooperating with the charge piston, characterised in that said second organ is a feeler organ cooperating with a cam surface on the charge piston, the kinematic chain comprising said charge piston, said distributor and said spring latch being configured so as to perform, when the charge piston is in its extracted position and the spring latch is in its limited extracted position, if the charge piston and/or the spring latch are simultaneously or alternative
- the lock 1 comprises a box 2 in which a spring latch 3 is housed, translatable in contrast and by the action of a first elastic element 4, a charge piston 5 translatable in contrast and by the action of a second elastic element 6 between a retraction position and an extraction position from the box 2.
- the distributor element 8 has a first organ 9 operatively engaged with the spring latch 3 for its drive and block, and a second feeler organ 10 of a cam 65 on the charge piston 5.
- the second feeler organ 10 has an engagement configuration with the cam 65 achievable due to the effect of a rotation of the distributor 8 in the direction to which a translation of the spring latch 3 corresponds in the extraction direction from the box 2, and a disengagement configuration from the cam 65 achievable due to the effect of a rotation of the distributor 8 in the direction to which a translation of the spring latch 3 corresponds in the retraction direction into the box 2.
- the distributor 8 can consist of a single piece or more than one piece fixed to each other wherein the first organ 9 and the second organ 10 are however made of a single piece.
- the cam 65 is envisaged on a lateral wall 11 of the charge piston 5 and has a first support zone 15, 50 which is presented to the feeler organ 10 when the charge piston 5 is in the retraction position, and a second support zone 16 which is presented to the feeler organ 10 when the charge piston 5 is in the extraction position.
- the first support zone 15, 50 has a first flat part 15 and a second flat part 50 inclined with respect to the first flat part 15.
- the second support zone 16 is also flat.
- the first flat part 15 of the first support zone 15, 50 and the second support zone 16 are parallel to each other.
- the second inclined part 50 of the first support zone 15, 50 connects the first part 15 to the second support zone 16 filling the gap between the two.
- the first flat part 15 of the first support zone 15, 50 and the second support zone 16 are parallel to the axis of oscillation 29 of the distributor 8, and to the extraction direction of the charge piston 5.
- the first flat part 15 of the first support zone 15, 50 has a greater distance from the axis of oscillation 29 of the distributor 8 than that of the second support zone 16.
- the distributor element 8 has a limited angular extraction position of the spring latch 3 from the box 2 when the feeler organ 10 is resting on the second support zone 16.
- the distributor element 8 also has an extended angular extraction position of the spring latch 3 from the box 2 when the feeler organ 10 is resting on the first support zone 15, 50.
- the distributor 8 has the extended angular extraction position of the spring latch 3
- the first organ 9 is engaged with a cam 14 of the spring latch 3 to lock the spring latch 3 itself.
- the box 2 has a parallelepiped configuration and comprises a front flat delimiting wall 17, a rear flat delimiting wall 18 opposite and parallel to the front flat delimiting wall 17, an upper flat delimiting wall 19, a lower flat delimiting wall 20 opposite and parallel to the upper flat delimiting wall 19, and two lateral flat delimiting walls opposite and parallel 21, 22.
- a plate 23 is externally applied to the front delimiting wall 17, which, when the door on which the lock is assembled is resting on the door jamb, faces a counter-plate on the door jamb itself.
- a special guide block 24 fixed into the box 2 supports the spring latch 3 in a translatable way at right angles to the plane of the front flat delimiting wall 17 of the box 2.
- the front flat delimiting wall 17 of the box 2 and the plate 23 have in particular respective openings 25, 26 aligned for the passage of the spring latch 3.
- the charge piston 5 is also supported in the box 2 in a translatable way at right angles to the plane of the front flat delimiting wall 17 of the box 2.
- the front flat delimiting wall 17 of the box 2 and the plate 23 have in particular respective openings 27, 28 aligned for the passage of the charge piston 5.
- the elastic element 6 that activates the charge piston 5 comprises in particular a helical spring operating in compression positioned with parallel axis to the axis of movement of the charge piston 5 between the rear base of the charge piston 5 and the internal side of the rear delimiting wall 18 of the box 2.
- the distributor 8 is interposed between the spring latch 3 and the charge piston 5 and is fixed to the box 2 with the axis of oscillation 29 at right angles to the lateral delimiting walls 21, 22 of the box 2.
- the control rod 7 extends longitudinally in a parallel plane to the lateral delimiting walls 21, 22 of the box 2 and is supported in a translatable way at right angles to the upper 19 and lower 20 delimiting walls of the box 2.
- the control rod 7 is activatable independently from the cam of the cylinder (not shown) for the key of the lock, from a reel 30 of an electric control managed by a special electronic board 45, and from the cam 31 of the handle follower 35 which in turn is fixed to the box 2 and can oscillate, in contrast and by the action of an elastic element 46, about an axis of oscillation parallel to that of the distributor 8.
- control rod 7 has a tab 32 engageable by the cam of the cylinder for the key of the lock, a tab 33 hooked onto the mobile stem 34 of the electric reel 30, and a tooth 35 engageable by the cam 31 of the handle follower 35.
- the control rod 7 on one side faces the lateral delimiting wall 22 and on the other side partly overlaps with the guide block 24, partly with the distributor 8, partly with the charge piston 5 and partly with the handle follower 35.
- the control rod 7 has a first slot 38 which extends lengthwise parallel to its translation direction for the passage of the hub of the handle follower 35 and a second slot 39 which extends lengthwise parallel to its translation direction for the passage of the hub of the distributor 8.
- the front 17 and rear 18 delimiting walls of the box 2 and a special groove 40 in the guide block 24 operate as a guide for the translation of the control rod 7 which in turn rests on the underlying components.
- the control rod 7 has a slot 36 which extends lengthwise at right angles to its translation direction, in which it slidably engages a pin 37 which projects from the distributor 8 at right angles to the lateral delimiting walls 21, 22.
- the pin 37 has a diameter which is substantially the same as the transversal dimension of the slot 36.
- the first organ 9 of the distributor 8 is configured like an extension having an enlarged head 41 operatively engaged in a perimeter groove 42 of the spring latch 3.
- the head 41 is operative to push against the rear wall of the groove 42 to cause the retraction of the spring latch 3 and against the front wall of the groove 42 to cause the extraction of the spring latch 3.
- the front wall of the groove 42 has an edge defining the cam 14 which is configured so as to transmit to the first organ 9, when they come into contact, only forces radially directed towards the axis of oscillation 29 of the distributor 8.
- the feeler organ 10 has a first flat side 43 for contact with the first support zone 15 and a second flat side 44, angled with respect to the first flat side 43, for contact with the second support zone 16.
- the first flat side 43 of the feeler organ 10 rests fully on the first flat support zone 15.
- the self-reclosing lock is more precisely a spring-latch electro-piston.
- the construction of the lock excludes the automatic locking of the spring latch 3 in the event of tampering or accidental activation of the charge piston 5 and/or the spring latch 3. More particularly the operation of the self-reclosing lock is as follows.
- the door is open.
- the second elastic element 6 exerts on the charge piston 5 an elastic extraction force which by effect of the engagement of the charge piston 5 with the second feeler organ 10 transmits to the distributor 8 a prevalent rotation torque on the rotation torque transmitted to the distributor 8 by the first organ 9 by effect of the engagement with the spring latch 3 and due to the elastic extraction force exerted on the spring latch 3 by the first elastic element 4.
- the elastic element 4 therefore maintains the kinematic chain comprising the control rod 7, the distributor 8 and the spring latch 3 in the configuration corresponding to the limited extraction position of the spring latch 3 and the resting position of the feeler organ 10 on the second support zone 16 of the charge piston 5 which is maintained by the elastic element 6 in the extraction position.
- any accidental or malicious activation of the spring latch 3 in the retraction direction causes the release of the feeler organ 10 from the cam 65, and consequently the spring latch 3 and the charge piston 5 are no longer connected through the distributor 8 and cannot interfere and hence cause each other to lock.
- the rotation induced on the distributor 8 by the retraction of the spring latch 3 in fact advantageously causes, as mentioned, the feeler organ 10 to move away from the lateral wall 11 of the charge piston 5, so that when the accidental or malicious retraction force on the spring latch 3 finishes, the spring latch 3 and the charge piston 5 are automatically brought back into their initial condition, that is, the spring latch 3 into the limited extraction position and the charge piston 5 into the extraction position.
- the kinematic chain comprising the charge piston 5, the distributor 8 and the spring latch 3 performs an automatically reversible movement when said external retraction force acting on the charge piston 5 is released.
- the kinematic chain comprising the charge piston 5, the distributor 8 and the spring latch 3 performs an automatically reversible movement when said external thrust force is released.
- the lock In order to close the door, the lock rests on the door jamb and when the front plate 23 of the box 2 meets the counter-plate of the door jamb, the simultaneous retraction of the spring latch 3 and the charge piston 5 begins. The retraction of the charge piston 5 continues until the complete alignment of the front plate 23 of the box 2 with the counter-plate of the door jamb, since the charge piston 5 puts stress on a full portion of the counter-plate, whereas thanks to the action of the elastic element 4 the spring latch 3 is re-extracted finding an empty space in the counter-plate.
- the extraction stroke of the spring latch 3 therefore takes place with the charge piston 5 in a retraction position suitable to present to the feeler organ 10 no longer the second support zone 16 but the first support zone 15, 50.
- the aforementioned kinematic chain is consequently activated by the elastic element 4 which causes a rotation of the distributor 8 which does not stop in the angular position initially adopted and defined by the resting of the feeler organ 10 on the second support zone 16, but continues until the feeler organ 10 is at the first support zone 15, 50.
- the spring latch 3 therefore performs the extended extraction position to which the engagement of the first organ 9 of the distributor 8 with the cam 14 corresponds. In this position the spring latch 3 is locked, since a retraction force acting axially on the spring latch 3 is discharged in the radial direction on the axis of oscillation 29 of the distributor 8 without force components useful for the rotation of the distributor 8.
- the unlocking is managed by the electronic board 45 which, upon request, activates the stem 34 of the reel 30 which in turn activates the aforementioned kinematic chain overcoming the reaction of the elastic element 4.
- the self-reclosing lock according to the invention is particularly reliable, secure and strong and its special construction makes it flexibly adaptable to various possible centre-to-centre distances between the plate of the lock box and the counter-plate of the door jamb.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
- Lock And Its Accessories (AREA)
- Fluid-Damping Devices (AREA)
Description
- The present invention relates to a self-reclosing lock.
- Electric self-reclosing locks known as electro-pistons have been on the market for some time, which envisage a single closure element, a spring latch or alternatively a bolt, activatable independently through the handle follower or through the cam of the cylinder for the key or even through an electric control.
- The electro-piston, in the spring latch version, has a limited extraction position and an extended extraction position wherein a mechanism locks the spring latch in such a way that it can act as a bolt.
- Such a locking mechanism in some solutions is activatable by pressing the charge piston, whereas in other solutions, it is activatable by pressing the charge piston and the spring latch simultaneously.
- One of the main drawbacks of a traditional spring-latch electro-piston therefore consists of the fact that in the event of accidental or malicious activation of the locking mechanism of the spring latch when the door is open, during the closure of the door the spring latch can hit the door jamb that delimits the doorway and get damaged or damage it badly.
- Another drawback reported consists of the poor adaptability of the lock to different spans between the front plate applied to the lock box and the counter-plate on the door jamb.
- Furthermore a traditional spring-latch electro-piston is not always able to guarantee comparable resistance to combined bending and compressive stress to that provided by the bolt version.
-
EP 1 840 303 A2 discloses an auxiliary bolt arrangement including a restraining member, which the auxiliary bolt in its protruding position is arranged to press against the force of a spring to a position, in which the restraining member prevents the movement of the latch bolt to its outermost protruding position. In addition, the latch bolt is arranged to retain the restraining member in said position, if solely the auxiliary bolt is being pressed inside the lock casing. -
DE 541 556 C discloses a self-relocking lock according to the preamble of claim 1. The technical task of the present invention is, therefore, to provide a self-reclosing lock which obviates the above-described technical drawbacks of the prior art. - Within the scope of this technical task, an object of the invention is to provide a self-reclosing lock with extremely secure operation, mechanically burglar proof and adaptable in a versatile way to various applications.
- Another object of the invention is in particular to provide a spring-latch electro-piston with extremely secure operation, suitable to exclude or obstruct accidental or malicious tampering which could cause damage, extremely mechanically resistant to combined bending and compressive stress, and universally adaptable to a wide range of centre-to-centre distances between the front plate applied to the lock box and the counter-plate on the door jamb.
- The technical task, as well as these and other objects, according to the present invention will be reached by providing a self-reclosing lock comprising a box in which a spring latch is housed, translatable in contrast and by the action of a first elastic element between a retracted position, a limited extracted position and a fully extracted position from the box, a charge piston translatable in contrast and by the action of a second elastic element between a retracted position and an extracted position from the box, said self-reclosing lock comprising inside the box an oscillating distributor element having a first organ operatively engaged with the spring latch for its drive and deadlocking, and a second organ cooperating with the charge piston, characterised in that said second organ is a feeler organ cooperating with a cam surface on the charge piston, the kinematic chain comprising said charge piston, said distributor and said spring latch being configured so as to perform, when the charge piston is in its extracted position and the spring latch is in its limited extracted position, if the charge piston and/or the spring latch are simultaneously or alternatively subjected to an external thrust force against the action of the second and first elastic elements, an automatically reversible movement to said extracted and limited extracted positions when said external thrust force is released.
- Further characteristics of the present invention are also defined in the following claims.
- Further characteristics and advantages of the invention will more fully emerge from the description of a preferred but not exclusive embodiment of the self-reclosing lock according to the invention, illustrated by way of non-limiting example in the accompanying figures of the drawings, in which:
-
Figure 1 shows an exploded view of the lock; -
Figure 2 shows a raised lateral view of the lock in the open door condition, from which for convenience purposes a lateral wall of the box, the control rod and the guide block of the spring latch have been removed; -
Figure 3 shows a raised lateral view of the lock in the condition wherein the door is resting on the door jamb but not locked, from which for convenience purposes a lateral wall of the box, the control rod and the guide block of the spring latch have been removed; -
Figure 4 shows a raised lateral view of the lock in the condition wherein the door is resting on the door jamb and locked, from which for convenience purposes a lateral wall of the box, the control rod and the guide block of the spring latch have been removed; -
Figure 5 shows an axonometric view of the charge piston and the distributor in the door open condition; and -
Figure 6 shows an axonometric view of the lock from which for convenience purposes a lateral wall of the box has been removed. - With reference to the figures mentioned, a self-reclosing lock is shown indicated overall with the reference number 1.
- The lock 1 comprises a
box 2 in which aspring latch 3 is housed, translatable in contrast and by the action of a firstelastic element 4, acharge piston 5 translatable in contrast and by the action of a secondelastic element 6 between a retraction position and an extraction position from thebox 2. - Inside the
box 2 there is also atranslatable control rod 7 of an oscillatingdistributor element 8. - The
distributor element 8 has afirst organ 9 operatively engaged with thespring latch 3 for its drive and block, and asecond feeler organ 10 of acam 65 on thecharge piston 5. - The
second feeler organ 10 has an engagement configuration with thecam 65 achievable due to the effect of a rotation of thedistributor 8 in the direction to which a translation of thespring latch 3 corresponds in the extraction direction from thebox 2, and a disengagement configuration from thecam 65 achievable due to the effect of a rotation of thedistributor 8 in the direction to which a translation of thespring latch 3 corresponds in the retraction direction into thebox 2. - The
distributor 8 can consist of a single piece or more than one piece fixed to each other wherein thefirst organ 9 and thesecond organ 10 are however made of a single piece. - The
cam 65 is envisaged on a lateral wall 11 of thecharge piston 5 and has afirst support zone feeler organ 10 when thecharge piston 5 is in the retraction position, and asecond support zone 16 which is presented to thefeeler organ 10 when thecharge piston 5 is in the extraction position. - The
first support zone flat part 15 and a secondflat part 50 inclined with respect to the firstflat part 15. - The
second support zone 16 is also flat. - The first
flat part 15 of thefirst support zone second support zone 16 are parallel to each other. - The second
inclined part 50 of thefirst support zone first part 15 to thesecond support zone 16 filling the gap between the two. - The first
flat part 15 of thefirst support zone second support zone 16 are parallel to the axis ofoscillation 29 of thedistributor 8, and to the extraction direction of thecharge piston 5. The firstflat part 15 of thefirst support zone oscillation 29 of thedistributor 8 than that of thesecond support zone 16. - The
distributor element 8 has a limited angular extraction position of thespring latch 3 from thebox 2 when thefeeler organ 10 is resting on thesecond support zone 16. - The
distributor element 8 also has an extended angular extraction position of thespring latch 3 from thebox 2 when thefeeler organ 10 is resting on thefirst support zone - Conveniently when the
distributor 8 has the extended angular extraction position of thespring latch 3, thefirst organ 9 is engaged with acam 14 of thespring latch 3 to lock thespring latch 3 itself. - The
box 2 has a parallelepiped configuration and comprises a front flat delimitingwall 17, a rear flat delimitingwall 18 opposite and parallel to the front flat delimitingwall 17, an upper flat delimitingwall 19, a lower flat delimitingwall 20 opposite and parallel to the upper flat delimitingwall 19, and two lateral flat delimiting walls opposite and parallel 21, 22. - A
plate 23 is externally applied to the front delimitingwall 17, which, when the door on which the lock is assembled is resting on the door jamb, faces a counter-plate on the door jamb itself. - A
special guide block 24 fixed into thebox 2 supports thespring latch 3 in a translatable way at right angles to the plane of the front flat delimitingwall 17 of thebox 2. - The front flat delimiting
wall 17 of thebox 2 and theplate 23 have in particularrespective openings spring latch 3. - The
charge piston 5 is also supported in thebox 2 in a translatable way at right angles to the plane of the front flat delimitingwall 17 of thebox 2. - The front flat delimiting
wall 17 of thebox 2 and theplate 23 have in particularrespective openings charge piston 5. - The
elastic element 6 that activates thecharge piston 5 comprises in particular a helical spring operating in compression positioned with parallel axis to the axis of movement of thecharge piston 5 between the rear base of thecharge piston 5 and the internal side of the rear delimitingwall 18 of thebox 2. - The
distributor 8 is interposed between thespring latch 3 and thecharge piston 5 and is fixed to thebox 2 with the axis ofoscillation 29 at right angles to the lateraldelimiting walls box 2. - The
control rod 7 extends longitudinally in a parallel plane to the lateraldelimiting walls box 2 and is supported in a translatable way at right angles to the upper 19 and lower 20 delimiting walls of thebox 2. - The
control rod 7 is activatable independently from the cam of the cylinder (not shown) for the key of the lock, from areel 30 of an electric control managed by a specialelectronic board 45, and from thecam 31 of thehandle follower 35 which in turn is fixed to thebox 2 and can oscillate, in contrast and by the action of anelastic element 46, about an axis of oscillation parallel to that of thedistributor 8. - In particular, the
control rod 7 has atab 32 engageable by the cam of the cylinder for the key of the lock, atab 33 hooked onto themobile stem 34 of theelectric reel 30, and atooth 35 engageable by thecam 31 of thehandle follower 35. - The
control rod 7 on one side faces the lateraldelimiting wall 22 and on the other side partly overlaps with theguide block 24, partly with thedistributor 8, partly with thecharge piston 5 and partly with thehandle follower 35. Thecontrol rod 7 has afirst slot 38 which extends lengthwise parallel to its translation direction for the passage of the hub of thehandle follower 35 and asecond slot 39 which extends lengthwise parallel to its translation direction for the passage of the hub of thedistributor 8. - The
front 17 and rear 18 delimiting walls of thebox 2 and aspecial groove 40 in theguide block 24 operate as a guide for the translation of thecontrol rod 7 which in turn rests on the underlying components. - For the transformation of a translation of the
control rod 7 into an oscillation of thedistributor 8, thecontrol rod 7 has aslot 36 which extends lengthwise at right angles to its translation direction, in which it slidably engages apin 37 which projects from thedistributor 8 at right angles to thelateral delimiting walls pin 37 has a diameter which is substantially the same as the transversal dimension of theslot 36. - For the transformation of the rotatory oscillation of the
distributor 8 into a translation of thespring latch 3, thefirst organ 9 of thedistributor 8 is configured like an extension having an enlargedhead 41 operatively engaged in aperimeter groove 42 of thespring latch 3. Thehead 41 is operative to push against the rear wall of thegroove 42 to cause the retraction of thespring latch 3 and against the front wall of thegroove 42 to cause the extraction of thespring latch 3. - The front wall of the
groove 42 has an edge defining thecam 14 which is configured so as to transmit to thefirst organ 9, when they come into contact, only forces radially directed towards the axis ofoscillation 29 of thedistributor 8. - The
feeler organ 10 has a firstflat side 43 for contact with thefirst support zone 15 and a secondflat side 44, angled with respect to the firstflat side 43, for contact with thesecond support zone 16. - In the contact position, the first
flat side 43 of thefeeler organ 10 rests fully on the firstflat support zone 15. - In the preferred but not exclusive application of the invention illustrated herein the self-reclosing lock is more precisely a spring-latch electro-piston.
- The construction of the lock excludes the automatic locking of the
spring latch 3 in the event of tampering or accidental activation of thecharge piston 5 and/or thespring latch 3. More particularly the operation of the self-reclosing lock is as follows. - The door is open. The second
elastic element 6 exerts on thecharge piston 5 an elastic extraction force which by effect of the engagement of thecharge piston 5 with thesecond feeler organ 10 transmits to the distributor 8 a prevalent rotation torque on the rotation torque transmitted to thedistributor 8 by thefirst organ 9 by effect of the engagement with thespring latch 3 and due to the elastic extraction force exerted on thespring latch 3 by the firstelastic element 4. - The
elastic element 4 therefore maintains the kinematic chain comprising thecontrol rod 7, thedistributor 8 and thespring latch 3 in the configuration corresponding to the limited extraction position of thespring latch 3 and the resting position of thefeeler organ 10 on thesecond support zone 16 of thecharge piston 5 which is maintained by theelastic element 6 in the extraction position. - From this condition it is not possible to cause the automatic locking of the
spring latch 3 at any time during the retraction stroke of the spring latch and of thecharge piston 5. - In fact, any accidental or malicious activation of the
spring latch 3 in the retraction direction causes the release of thefeeler organ 10 from thecam 65, and consequently thespring latch 3 and thecharge piston 5 are no longer connected through thedistributor 8 and cannot interfere and hence cause each other to lock. - Neither is it possible for a differential retraction, caused accidentally or maliciously, to trigger the locking of the
spring latch 3. - The rotation induced on the
distributor 8 by the retraction of thespring latch 3 in fact advantageously causes, as mentioned, thefeeler organ 10 to move away from the lateral wall 11 of thecharge piston 5, so that when the accidental or malicious retraction force on thespring latch 3 finishes, thespring latch 3 and thecharge piston 5 are automatically brought back into their initial condition, that is, thespring latch 3 into the limited extraction position and thecharge piston 5 into the extraction position. - On the other hand, if only the
charge piston 5 is subjected to an external retraction force, advantageously the kinematic chain comprising thecharge piston 5, thedistributor 8 and thespring latch 3 performs an automatically reversible movement when said external retraction force acting on thecharge piston 5 is released. - Therefore if the
charge piston 5 and/or thespring latch 3 are subjected simultaneously or alternatively to an external thrust force, the kinematic chain comprising thecharge piston 5, thedistributor 8 and thespring latch 3 performs an automatically reversible movement when said external thrust force is released. - In order to close the door, the lock rests on the door jamb and when the
front plate 23 of thebox 2 meets the counter-plate of the door jamb, the simultaneous retraction of thespring latch 3 and thecharge piston 5 begins. The retraction of thecharge piston 5 continues until the complete alignment of thefront plate 23 of thebox 2 with the counter-plate of the door jamb, since thecharge piston 5 puts stress on a full portion of the counter-plate, whereas thanks to the action of theelastic element 4 thespring latch 3 is re-extracted finding an empty space in the counter-plate. - The extraction stroke of the
spring latch 3 therefore takes place with thecharge piston 5 in a retraction position suitable to present to thefeeler organ 10 no longer thesecond support zone 16 but thefirst support zone - The aforementioned kinematic chain is consequently activated by the
elastic element 4 which causes a rotation of thedistributor 8 which does not stop in the angular position initially adopted and defined by the resting of thefeeler organ 10 on thesecond support zone 16, but continues until thefeeler organ 10 is at thefirst support zone spring latch 3 therefore performs the extended extraction position to which the engagement of thefirst organ 9 of thedistributor 8 with thecam 14 corresponds. In this position thespring latch 3 is locked, since a retraction force acting axially on thespring latch 3 is discharged in the radial direction on the axis ofoscillation 29 of thedistributor 8 without force components useful for the rotation of thedistributor 8. - The unlocking is managed by the
electronic board 45 which, upon request, activates thestem 34 of thereel 30 which in turn activates the aforementioned kinematic chain overcoming the reaction of theelastic element 4. - The self-reclosing lock according to the invention is particularly reliable, secure and strong and its special construction makes it flexibly adaptable to various possible centre-to-centre distances between the plate of the lock box and the counter-plate of the door jamb.
- The self-reclosing lock as conceived herein is susceptible to many modifications and variations, all falling within the scope of the invented concept as defined by the appended claims. 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 (14)
- Self-reclosing lock (1) comprising a box (2) in which a spring latch (3) is housed, translatable in contrast and by the action of a first elastic element (4) between a retracted position, a limited extracted position and a fully extracted position from the box (2), a charge piston (5) translatable in contrast and by the action of a second elastic element (6) between a retracted position and an extracted position from the box (2), said self-reclosing lock comprising inside the box (2) an oscillating distributor element (8) having a first organ (9) operatively engaged with the spring latch (3) for its drive and deadlocking, and a second organ (10) cooperating with the charge piston (5), characterised in that said second organ (10) is a feeler organ (10) cooperating with a cam surface (65) on the charge piston (5), the kinematic chain comprising said charge piston (5), said distributor (8) and said spring latch (3) being configured so as to perform, when the charge piston (5) is in its extracted position and the spring latch (3) is in its limited extracted position, if the charge piston (5) and/or the spring latch (3) are simultaneously or alternatively subjected to an external thrust force against the action of the second and first elastic elements (6, 4), an automatically reversible movement to said extracted and limited extracted positions when said external thrust force is released.
- Self-reclosing lock (1) according to the previous claim, characterised in that said second elastic element (6) is adapted to perform on the charge piston (5) an elastic extraction force which by effect of the engagement of the charge piston (5) with the second feeler organ (10) transmits to the distributor (8) a prevalent rotation torque on the rotation torque transmitted to the distributor (8) from the first organ (9) by effect of the engagement with the spring latch (3) and due to the elastic force exerted on the spring latch (3) by the first elastic element (4).
- Self-reclosing lock (1) according to any of the previous claims, characterised in that said second feeler organ (10) is disengageable from the cam (65) when an external retraction force is applied on the spring latch (3).
- Self-reclosing lock (1) according to any of the previous claims, characterised in that said cam (65) is provided on a lateral wall (11) of the charge piston (5) and has a first support zone (15, 50) which is presented to the feeler organ (10) when the charge piston (5) is in the retraction position, and a second support zone (16), separate from the first support zone (15, 50), which is presented to the feeler organ (10) when the charge piston (5) is in the extraction position, said distributor (8) having an extended angular extraction position and spring latch (3) locking position in correspondence with the support of the feeler organ (10) at the first support zone (15), and a limited angular extraction position of the spring latch (3) in correspondence with the support of the feeler organ (10) at the second support zone (16).
- Self-reclosing lock (1) according to the previous claim, characterised in that when said distributor (8) has said extended angular extraction position of the spring latch (3), the first organ (9) is engaged with a cam (14) of the spring latch (3) for locking the spring latch (3).
- Self-reclosing lock (1) according to either claim 4 or 5, characterised in that said first support zone (15, 50) comprises a first flat part (15) and a second flat part (50) inclined with respect to the first flat part (15).
- Self-reclosing lock (1) according to claim 6, characterised in that said second support zone (16) is flat.
- Self-reclosing lock (1) according to the previous claim, characterised in that said first flat part (15) and said second support zone (16) are parallel and are connected to each other by said second flat part (16).
- Self-reclosing lock (1) according to the previous claim, characterised in that said first flat part (15) and said second support zone (16) are parallel to the axis of oscillation (29) of the distributor (8).
- Self-reclosing lock (1) according to the previous claim, characterised in that said first flat part (15) has a larger distance from the axis of oscillation (29) of the distributor (8) with respect to that of the second support zone (16).
- Self-reclosing lock (1) according to any of claims 6 to 10, characterised in that said first flat part (15) and said second support zone (16) are parallel to the extraction direction of the charge piston (5).
- Self-reclosing lock (1) according to any of claims 4 to 11, characterised in that said feeler organ (10) has a first flat side (43) for contact with the first support zone (15, 50) and a second flat side (44), angled with respect to the first flat side (43), for contact with the second support zone (16).
- Self-reclosing lock (1) according to any of the previous claims, characterised in that said first organ and said second organ (9, 10) consist of a single piece.
- Self-reclosing lock (1) according to claim 1, characterised in that it comprises a spring-latch electro-piston.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT001233A ITMI20121233A1 (en) | 2012-07-16 | 2012-07-16 | SELF-DECLARING LOCK |
PCT/EP2013/064885 WO2014012881A1 (en) | 2012-07-16 | 2013-07-15 | Self-reclosing lock |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2885473A1 EP2885473A1 (en) | 2015-06-24 |
EP2885473B1 true EP2885473B1 (en) | 2018-10-24 |
Family
ID=46888552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13737229.8A Active EP2885473B1 (en) | 2012-07-16 | 2013-07-15 | Self-reclosing lock |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2885473B1 (en) |
CN (1) | CN104603380B (en) |
ES (1) | ES2707883T3 (en) |
IT (1) | ITMI20121233A1 (en) |
WO (1) | WO2014012881A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2551976A (en) * | 2016-06-30 | 2018-01-10 | Gianni Ind Inc | Electric lock device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE466562C (en) * | 1925-10-24 | 1928-10-09 | Saechsische Schlossfabrik Schl | Bolt latch lock |
DE541556C (en) * | 1928-12-06 | 1932-01-13 | Saechsische Schlossfabrik Schl | Bolt latch lock |
US4679416A (en) * | 1984-08-06 | 1987-07-14 | R. R. Brink Locking Systems, Inc. | Trigger and latch bolt assembly |
US4677834A (en) * | 1985-08-07 | 1987-07-07 | Hicks Cecil B | Electro-mechanical security lock |
FI115066B (en) * | 2001-01-26 | 2005-02-28 | Abloy Oy | Device at a door lock for controlling the ejection length of the piston |
FI20065200L (en) * | 2006-03-28 | 2007-09-29 | Bjoerkboda Laas Oy Ab | Auxiliary lock piston device for a door lock |
FI121127B (en) * | 2007-04-27 | 2010-07-15 | Abloy Oy | Lock of the door |
CN201891319U (en) * | 2010-11-30 | 2011-07-06 | 固力保安制品有限公司 | Automatic latch door lock |
-
2012
- 2012-07-16 IT IT001233A patent/ITMI20121233A1/en unknown
-
2013
- 2013-07-15 CN CN201380038258.4A patent/CN104603380B/en active Active
- 2013-07-15 ES ES13737229T patent/ES2707883T3/en active Active
- 2013-07-15 WO PCT/EP2013/064885 patent/WO2014012881A1/en active Application Filing
- 2013-07-15 EP EP13737229.8A patent/EP2885473B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
ES2707883T3 (en) | 2019-04-05 |
ITMI20121233A1 (en) | 2014-01-17 |
EP2885473A1 (en) | 2015-06-24 |
WO2014012881A1 (en) | 2014-01-23 |
CN104603380A (en) | 2015-05-06 |
CN104603380B (en) | 2017-06-13 |
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