RU2664648C2 - Lock with mechanism of bolt actuation - Google Patents

Abstract

FIELD: construction.SUBSTANCE: lock (1) for doors and windows, containing actuation mechanism (2) of the bolt (3), where actuation mechanism comprising: pivot arm (4) for moving the bolt from retracted position to extended position, the first rotary wheel (5) arranged coaxially with respect to said pivot arm, clutch (6) disposed between said first turn wheel and said pivot arm and configured to transfer rotational movement from said first pivot wheel to said pivot arm, and element (7) connected to said first pivot wheel for rotating said first pivot wheel.EFFECT: lock with mechanism of bolt activation is proposed.12 cl, 7 dwg

Description

The present invention relates to a lock containing a mechanism for triggering a deadbolt, in particular, to a multilateral locking lock with a retractable tongue.

Known locks multilateral locking with a retractable language, containing the main retractable language and a system for transmitting the movement of the primary language in the secondary languages to securely close the window or door at several points.

For example, patent document WO 2011/051086 A2 describes a multi-directional lock with a retractable tongue, comprising a rotary distributor equipped with means for translating its own rotational movement into the first reverse language transfer from the retracted position to the withdrawn position relative to the lock box and into the second reverse transfer of the deadbolt control lever the castle.

Also known are window and door locks containing electronic deadbolt triggers.

For example, there is an electronic deadbolt trigger mechanism containing a small piston for recharging a spring that triggers the deadbolt using an electromagnet.

The applicant believes that the mechanisms for triggering a deadbolt used in locks known in the art are not without drawbacks and can be improved in many aspects.

For example, the Applicant has found that the mechanism for triggering a deadbolt through a key described in WO 2011/051086 A2 has a complex structure and / or creates friction forces that counteract the movement of the deadbolt using a key, and because of these friction forces the user needs to apply a larger torque torque for the key. For example, in WO 2011/051086 A2, during its translational movement caused by the rotary distributor, the bolt control lever moves along the end wall of the lock body, creating a friction force that counteracts the movement. In addition, the connection due to the contact between the rotary distributor and the control lever and / or between the control lever and the rotary lever retracting the deadbolt causes sliding between the two contact surfaces with the corresponding friction.

According to the Applicant, the electronic deadbolt mechanisms used in locks known in the art require a large number of components and have a complex structure.

Thus, the Applicant was faced with the problem of realizing a lock with a deadbolt release mechanism with a simple structure, not expensive to execute and especially effective with respect to the forces acting on it to activate the deadbolt, in terms of intensity of forces and / or ease of use.

The applicant has solved the above problems with the lock defined in the claims of the present invention and / or in the various embodiments disclosed below.

The invention relates to a lock for doors and windows containing a mechanism for triggering a deadbolt.

The system’s actuation mechanism comprises a pivot lever for moving the bolt between the retracted and extended positions (usually from the extended to the retracted), a first wheel located coaxially with respect to the indicated pivot lever, a coupling located between said first wheel and said pivot lever and made with the possibility of transmitting rotational motion from the specified first wheel to the specified rotational lever, as well as an actuator connected to the specified first wheel for rotation the specified first wheel.

The term "wheel" means an element of the lock (usually round in shape) that can rotate around the axis of rotation, usually passing through the element itself.

According to the Applicant, the transfer (usually retraction) of the bolt with the help of an actuator rotating the first wheel, which, in turn, rotates the pivot lever with the clutch, which, in turn, drives the bolt, ensures its effective movement, in particular with respect to the torque used to move the bolt.

For example, in an embodiment of the present invention, in which the actuating element is a gear of a motor or a steering wheel connected (directly or indirectly) to a gear of a motor, the deadbolt can be moved by rotating the gear with minimum torque, despite the simple and compact structure.

In an embodiment of the present invention, in which the actuating element is a steering wheel driven by a cam of a lock cylinder using a series of intermediate wheels interconnected to prevent gear engagement of the sliding parts, the bolt can be moved with a low torque applied to the cam (using the key in the user's hand), since there is no need to overcome the frictional force created by sliding between parts and the transmission of torque from one wheel to another is efficient and / or easily tunable at the design stage, if necessary.

Preferably, said couplings are configured to transmit rotational motion from said first wheel to said rotary lever selectively, depending on whether they are in a first operating state in which they transmit rotational motion or in a second working state in which they do not transmit rotational motion. Thus, it is possible to conveniently disconnect the first wheel from the pivot arm, for example, during the actuation of the deadbolt by means of a gear distributed between the actuation of the deadbolt and the actuation of the tongue (see below).

Preferably, said couplings comprise an off-center protrusion fully associated with one of said first wheels and said pivot arm, and a circumferential groove obtained in the other first wheel and said pivot arm, wherein the groove is under the influence of said protrusion.

Preferably, the groove has a limiter for said protrusion, said first working state corresponding to the contact state between the protrusion and the limiter and the rotation of the first wheel, due to which the protrusion and limiter abut against each other, as well as a second working state corresponding to the separation state between the protrusion and the limiter.

Thus, for example, in locks with a cylinder, when the key is rotated in the cylinder to extend or retract the tongue, despite the rotation of the first wheel (caused by a gear from a series of intermediate wheels), the rotation is not transmitted to the rotary lever, since the protrusion can freely pass along the circumference of the groove passing in both directions (second operational state). When the tongue is completely retracted, the protrusion transitions into contact with the groove limiter so that a subsequent turn of the key (first working state) corresponds to the rotation of the pivot arm (now together with the first wheel due to the contact between the protrusion and the limiter) and the bolt from the extended position to the next allotted.

Preferably, the protrusion is fully associated with the specified first wheel, and the groove is made on the specified rotary lever. Thus, the dimensions are optimized taking into account the space and size of the elements, which allows to reduce the width of the first wheel.

Preferably, the groove is through. In this case, the dimensions are reduced and optimal mating is achieved.

Preferably, said actuator is a rotatable member. In this case, despite the simple structure, an effective transmission of motion is carried out. In an alternative embodiment of the present invention, said actuator may be a shaft with an associated strut that engages with a gear crown of the first wheel.

In an embodiment, the lock comprises an electric motor with a gear wheel containing said rotary actuator or connected, directly or indirectly, to said actuator to rotate said actuator. Thus, a lock is implemented in which the operation of the deadbolt is carried out in an electrically efficient way.

Preferably, said rotatable actuator is a second wheel (e.g., a guide wheel).

Preferably, the lock comprises a third wheel (directly) connected to said second wheel.

Preferably, the lock comprises a fourth wheel (directly) connected to said fourth wheel.

Preferably, the lock comprises a fifth wheel (directly) connected to said fourth wheel and (directly) driven by the cam of the cylinder for locks.

The lock may also contain the specified cylinder for locks. In an embodiment of the present invention, the lock comprises a gear motor and said fifth wheel coincides with said gear. In this case, the engine can activate the tongue and the deadbolt electrically, as well as manually or only electrically. Preferably, one or more of said wheels (more preferably all said wheels) and / or said actuating rotary element and / or said gears are gear (namely provided with at least one corresponding gear crown) and the direct connection between the two wheels / devices is due to mutual clutch.

In one embodiment, a direct connection between the two wheels / devices is through a frictional connection (in this case, gear teeth are not required).

In one embodiment, the connection between the two wheels / devices can be made indirectly by relative positioning or by using additional elements, including belts or chains.

Preferably, the fourth gear comprises a first gear crown that is directly engaged with the fifth gear and a second gear crown having a common axis or fully associated with the first gear crown which is directly engaged with the third gear. Preferably, the second gear crown has a smaller diameter than the first gear crown. Preferably, the second toothed crown is coaxially offset from the first toothed crown.

Preferably, the first and / or second and / or third and / or fifth gears represent the corresponding (first) crown, serrated on the side edge.

Preferably, the first serrated edge and / or the corresponding toothed crown of the fifth wheel is interrupted for the respective circumferential path. Thus, the cylinder cam during its rotation is placed in the corresponding interrupted path.

Preferably, the lock comprises a retractable tongue connected directly to said third wheel to obtain translational movement from the third wheel between the extended position and the retracted position.

Preferably, the third wheel has an off-center pin cooperating with a groove made in said language in order to convert the rotational movement of the third wheel into said translational movement of the tongue.

Preferably, the groove has a substantially straight section and at least a circular circular segment having a radius equal to the radius of the off-center pin relative to the axis of rotation of the third wheel and centered on the axis of rotation of the third wheel with the tongue extended, the segments continuously replacing each other. Preferably, the groove has (optionally) a circular circle segment having a radius equal to the radius of the off-center pin relative to the axis of rotation of the third wheel and centered on the axis of rotation of the third wheel with the retracted tongue position. Thus, the additional circular segment of the circle allows slight rotation of the third wheel and, therefore, of the second and first wheels and the pivot arm (for retracting the bolt) without corresponding movement of the tongue (which is completely retracted).

Preferably, the tongue has a cavity in which (at least partially) said fourth wheel is located, preferably a first gear crown.

Preferably, the lock comprises a sixth wheel (preferably a gear), directly connected to the tongue to receive rotational movement from the tongue. Preferably, the tongue comprises a corresponding pin cooperating with an eccentric hole of said sixth wheel, an eccentric hole extending in the radial direction to convert the translational movement of the bolt into said rotational movement of the sixth wheel.

Preferably, the lock consists of two transmission rods provided with an appropriate rack, in which two racks are engaged with the sixth gear on its opposite sides. Thus, it is possible to transfer the translational movement of the tongue, which is the main language of the lock, to additional secondary bolts, for example, in several point locks.

Preferably, the lock comprises a rod on which the deadbolt can be engaged, for example, by means of a threaded connection. Preferably, the pivot arm comprises a first arm extending (substantially) in a radial direction and engaging, typically by contact, with said shaft. Typically, the first shoulder engages at one of the free ends of the indicated rod on which the flange is located, the second shoulder being located between the flange and the bolt. Thus, it is possible to convert the rotational movement of the pivot arm into the translational movement of the deadbolt.

Preferably, the lock comprises a first spring located between the specified shaft and the box-shaped housing of the castle, to create traction on the specified shaft in the direction of the specified extended position of the deadbolt. Thus, the deadbolt moves back to the extended position and / or retains the position without any opposing force, and the pivot arm moves back to the corresponding position. Preferably, the lock comprises a rotatable housing having a common axis with said rotary lever and detached from said rotary lever, the rotatable housing having a second lever different from the first shoulder extending (substantially) in the radial direction and engaging, usually by contact, with the indicated rod. Typically, the second shoulder engages on one of the free ends of the specified rod, on which the specified flange is located on the opposite side of the first shoulder relative to the rod, the first shoulder located between the flange and the bolt.

Typically, the rotatable housing is provided with a non-circular through hole for the shaft of the handle to pass in order to realize a mechanical connection between the handle and the rotational housing. Thus, it is possible to convert the rotational movement of the rotatable body, created by manually turning the handle, into the translational movement of the bolt, in a sense independent of the rotation of the rotary lever.

Preferably, the rotatable body comprises a main body provided with said through hole and a secondary body provided with said second shoulder and is completely connected to the main body. Thus, the assembly of the castle is simplified.

Preferably, the lock comprises a second spring located between the indicated rotatable housing (as correctly indicated by the main body) and the box-shaped housing of the lock to create traction on the rotatable housing in the direction of the initial position. Thus, the handle moves back to the extended position and / or retains the position, without any opposing force, in the corresponding initial position, and the deadbolt can be moved back by the first spring to the extended position. Preferably, the lock comprises a protective sheath.

Preferably, the lock (for example, the box) contains a frontal body (usually lamellar), which, as a rule, forms a frontal wall, usually containing a first through hole for the deadbolt and / or a second through hole for the tongue.

Preferably, the lock (for example, the box) contains the first and second side bodies (usually lamellar), which, as a rule, at least partially, form the first and second side walls and, in an embodiment, the end wall and / or the upper wall and / or bottom wall.

Typically, the lock contains a first structural block, mainly formed to accommodate, at least partially, the specified fourth and fifth wheels and / or the specified cylinder.

Typically, the lock contains a second structural unit (which can be made in the form of one or more components), formed to accommodate, at least partially, the specified first wheel. Typically, a castle contains one or more additional blocks to tighten the structure of the castle.

Other features and advantages of the invention will be apparent from the following detailed description of certain embodiments, which are examples and should not be construed as the only valid ways to implement the castle in accordance with the present invention. This description is given below with reference to the accompanying drawings, given for illustrative but not limiting purposes:

- figure 1 is a perspective view of a castle in accordance with the present invention;

- figure 2 is a partially exploded view of the castle in figure 1;

- figure 3 is a perspective view of the castle in figure 1 with the removal of some parts and from a different angle;

- figure 4 is an object shown in figure 3 in a partially disassembled form;

- figures 5 and 6 are, respectively, at two different angles, the object in figure 3, further disassembled in comparison with figure 4 and with the removal of some details;

- figure 7 is a rear view of the castle in figure 1 with the removal of some details.

Referring to the figures, the number 1, as a rule, indicate a lock for doors and windows in accordance with the present invention.

Although the lock pattern is a multi-way lock with a retractable tongue, the present invention relates to all types of locks with or without a tongue; with one or more languages; manual or electronic or mechanized etc.

The lock 1 contains a mechanism 2 for the operation of the bolt 3.

The term "deadbolt" refers to an element configured to interact with a door or window jamb, for example, an ordinary deadbolt, as an example, or a semi-cylindrical deadbolt. The actuation mechanism 2 comprises a pivot arm 4 for translating the bolt from an extended position (shown in the figure) into a retracted first wheel 5 located coaxially with respect to the pivot arm, and a clutch 6 located between the first wheel 5 and the pivot arm 4 made with the ability to transmit rotational motion from the first wheel to the pivot arm. Typically, the actuation mechanism 2 further comprises an actuator 7 engaged with the first wheel 5 for rotating the first wheel. In the presented example, the wheels and the actuator are gears that are in direct engagement with each other. However, the present invention also relates to an embodiment (not shown) in which the wheels and / or the device are not toothed (and have smooth connecting surfaces) and are directly connected to each other by friction, or in the case of an indirect connection of the wheels and / or devices using belts (if the surface is smooth) or chains (if the surface is serrated).

As a rule, all the rotary elements described and / or declared in the formula have corresponding rotation axes parallel to each other and, as a rule, perpendicular to the transitional trajectory of the bolt and / or tongue.

As already noted above, despite the fact that the above embodiment relates to a lock with the ability to manually actuate the deadbolt of the lock with a key (and handle), the present invention also encompasses the advantages of using locks (not shown) with an electronic deadbolt trigger.

This type of lock with an electronic triggering mechanism may include an electric motor with a gear as an actuating rotary element or, in another embodiment, connected directly or indirectly (due to the relative position of one or more gears) with an actuating element for performing a rotation. Returning to the hand-operated locks, preferably the actuator 7 is a second gear wheel, as shown in the figures.

Preferably, the lock comprises a third gear 8 that is engaged, preferably directly (namely, without the arrangement of additional devices), with a second gear 7. Preferably, the lock comprises a fourth gear 9 that is directly engaged with the third gear 8. Preferably, as shown in the figure, the fourth gear 9 contains a first gear crown 9a and a second gear crown (or gear) 9b having a common axis, fully connected and coaxially offset, where the diameter the meter of the second gear 9b is much smaller than the diameter of the first gear 9a. Preferably, the third gear crown 8 is in direct engagement with the second gear crown 9b.

Preferably, the lock comprises a fifth gear 10 which is in direct engagement with the fourth gear 9 (preferably with the first gear crown 9a) and directly actuated by the cam of the lock cylinder (not shown; indirect, for example of a known type).

As shown in the example, the first, second, third and fifth gears have a unique corresponding gear crown on the side edge. Typically, the first gear crown 9a and the corresponding gear crown of the fifth gear 10 are interrupted by the respective circumferential path (9 s, 10a) to accommodate the cylinder cam during rotation. Preferably, the lock comprises a retractable tongue 11 connected directly to the third wheel to obtain translational movement in a variable direction from the third wheel

Preferably, the third wheel has an off-center protrusion 8a interacting with a groove 12 made in the tongue to convert the rotational motion of the third wheel into translational motion of the tongue.

Preferably, the groove has a substantially straight path 12a (in which an eccentric protrusion passes during the translational movement of the tongue) and a path 12b in the form of an arc of a circle with a radius equal to the radius of the eccentric pin relative to the axis of rotation of the third wheel and centered on the axis of rotation of the third wheel in the retracted position language. With the tongue extended, the path 12b in the form of an arc of a circle provides additional rotation of the third wheel by several degrees, while maintaining the tongue at rest. In this case, the off-center protrusion 8a moves along an arc of a circle towards the limiter.

For example, the groove 12 has a groove 12c that creates (optionally) a path in the form of an arc of a circumference of the groove (oriented along the width of the groove), having a radius equal to the radius of the off-center pin relative to the axis of rotation of the third wheel and centered along the axis of rotation of the third wheel when the tongue is fully retracted . It should be noted that the accompanying drawings illustrate the state in which the deadbolt and tongue are retracted.

Preferably, the tongue has a cavity 13 in which a fourth wheel 9 is partially placed, preferably a first gear crown 9a. In an embodiment of the present invention (not shown), the lock is of the type known as “mechanized” and contains an electric motor with gear (gear) connected directly to the fourth wheel 9 (for example, the first gear crown 9a) In this case, the fifth wheel and / or the cylinder may be absent, as it will be functionally replaced by an electric motor.

In an embodiment of the present invention, the lock refers to the type of multilateral locking (as shown in the example), where the translational movement of the language 11, which is the main language of the castle, is transmitted to secondary languages (not shown). For this purpose, preferably, the lock 1 comprises a sixth gear 14 directly connected to a bolt for receiving rotational movement from the tongue. Preferably, the tongue comprises a corresponding off-center protrusion 15 interacting with the off-center slot 16 of the sixth gear, the slot having a radial extension to convert the translational movement of the tongue into the rotational movement of the sixth gear. Preferably, the lock consists of two transmission rods 17 with a corresponding rack 18, in which two racks are engaged with the sixth gear on opposite sides of the sixth gear. In this case, the transfer rods receive translational motion from the sixth gear and can trigger secondary languages.

Preferably, the lock comprises a shaft 20 on which the bolt 3 can be inserted, for example, by means of a threaded connection. Preferably, the pivot arm 4 comprises a first arm 30 having a radial extension engaging with the shaft by contact. Typically, the first shoulder engages on one of the free ends 31 (of the correct shape) with a flange 3 2 on one of the free ends of the shaft, the first shoulder being located between the flange and the bolt.

Preferably, the lock comprises a first spring 33 (for example, a torsion type) located between the rod (for example, on the flange 32) and the box-shaped housing of the lock, to create traction on the rod in the direction of the extended position of the bolt.

Preferably, the lock comprises a rotatable body 34 coaxial with the rotary lever 31 and disconnected from the rotary lever (that is, there is no significant transmission of traction and / or movement), the rotatable body having a second arm 35 different from the first arm having a radial extension included in engagement with the rod by contact.

Typically, the second shoulder engages on one of its free ends 36 with the indicated flange 32 on the opposite side of the first shoulder relative to the rod, the second shoulder being located between the flange and the bolt. Typically, the rotatable body has a through slot 37, not circular (“frame”) to accommodate the shaft of the handle (not shown) for the implementation of the mechanical connection between the handle and the rotatable body. Preferably, the rotatable body 34 comprises a main body 34a containing said through slot, and a secondary body 34b containing said second shoulder 35 and completely connected to the main body (for example, by means of a mechanical coupling; as shown in the figures).

Preferably, the lock comprises a second spring 38 (for example, a compression type) located between the rotatable housing (as correctly indicated by the main body) and the box-shaped housing of the lock to create traction on the rotatable housing in the direction of the initial position.

Preferably, in the embodiment (as shown in the figures), the clutch 6 comprises an off-center protrusion 40 (FIG. 6) fully connected to the first gear 5 and a groove 41 with a circumferential extension formed in the pivot arm 4, the groove engaging with a ledge. Preferably, the groove has an end face 42 for protrusion. In an alternative embodiment, which is not shown, the protrusion is fully connected to the pivot arm and the groove is received in the first gear 5.

Preferably 41 extends through the entire thickness of the pivot arm 4 or the first gear 5.

Typically, the lock contains a protective shell 50, consisting of a front plate body 51 (which forms the front wall), with a first through slot 52 for the deadbolt and a second through slot 53 for the tongue.

For example, the box comprises a first lateral body 54 and a second lateral body 55, of a plate-like type, which, as a rule, at least partially form the first and second side walls, an end wall, an upper wall and a lower wall.

For example, the lock 1 comprises a first structural unit 56, suitably formed to accommodate at least partially the fourth gear 9 and the fifth gear 10, as well as a cylinder, if any.

For example, the lock comprises a second structural unit 57, appropriately formed to accommodate, at least in part, the first gear 5 and the rotatable body 34.

Typically, the lock contains one or more additional structural units 58 for structuring and / or tightening the structure.

Claims (16)

1. The lock (1) for doors and windows, containing a trigger mechanism (2) bolt (3), and the trigger mechanism contains: - a rotary lever (4) for moving the bolt between the retracted and extended positions, - the first wheel (5), located coaxially with respect to the specified rotary lever, - a clutch (6) located between the specified first wheel and the specified pivot arm and configured to transmit rotational motion from the specified first wheel to the specified pivot arm, and - an actuating element (7) connected to said first wheel to rotate said first wheel. 2. A lock according to claim 1, characterized in that said clutch (6) is configured to transmit rotational movement from said first wheel to said swing arm selectively, depending on whether they are in the first operating state in which they transmit rotational motion, or in a second operating state in which they do not transmit rotational motion. 3. The castle in paragraphs. 1 and 2, characterized in that said clutch (6) contains an eccentric protrusion (40), made as a single unit with one of these first wheels and the indicated pivot arm, and a groove (41) passing around the circumference obtained in another first wheel and the specified pivot arm, and the groove is engaged with the specified protrusion. 4. The castle in paragraphs. 2 and 3, characterized in that the groove has a stopper (42) for said protrusion, said first working condition corresponding to the contact state between the protrusion and the stopper and the rotation of the first wheel, due to which the protrusion and stopper abut against each other, as well as the second working state corresponding to the state of separation between the protrusion and the limiter. 5. The castle in paragraphs. 3 and 4, characterized in that the protrusion (40) is made integrally with the specified first wheel, and the groove (41) is made on the specified pivot arm and is through. 6. The castle according to any one of paragraphs. 1-5, characterized in that it further comprises an electric motor with a gear wheel containing the specified actuator or connected, directly or indirectly, with the specified actuator for rotation of the specified actuator. 7. The castle according to any one of paragraphs. 1-6, characterized in that said actuating element is a second wheel and the lock comprises a third wheel (8) associated with said second wheel, a fourth wheel (9) connected with said third wheel, and a fifth wheel (10) associated with said the fourth wheel and driven by the cam of the cylinder for locks, as well as a retractable tongue (11), connected directly to the specified third wheel to obtain translational movement from the third wheel between the corresponding extended position and the corresponding retracted position m, and the third wheel has an eccentric pin (8a) engaged with the groove (12) made in the specified language to convert the rotational movement of the third wheel into the specified translational movement of the tongue, the groove has a substantially straight section (12a) and a section in the form of an arc of a circle with a radius equal to the radius of the eccentric pin relative to the axis of rotation of the third wheel and centered on the axis of rotation of the third wheel, when the tongue is in the indicated retracted position, the first working state is There is a specified retracted position of the tongue, and the tongue contains a cavity (13) in which, at least partially, said fourth wheel is located. 8. The castle according to any one of paragraphs. 1-7, characterized in that one or more of these wheels, and / or the specified actuator, and / or the specified gear are gear, and a direct connection is carried out due to the mutual engagement. 9. The castle according to any one of paragraphs. 7 and 8, characterized in that the fourth wheel (9) contains a first gear crown (9a), which is in direct engagement with the fifth gear wheel, and a second gear crown (9b) having a common axis, fully connected and coaxially displaced on the first gear a crown in direct engagement with the third gear, the second gear crown having a smaller diameter compared to the diameter of the first gear crown and the first and / or second and / or third and / or fifth gears represent the corresponding single w crown on the lateral serrated edge. 10. The castle according to any one of paragraphs. 1-9, characterized in that it contains a sixth gear wheel (14) directly connected to the tongue (11) for receiving rotational movement from the tongue, and the tongue contains a corresponding pin (15) that engages with an off-center hole (16) of the specified sixth gear, an eccentric hole extending in the radial direction, for converting the translational movement of the tongue into the indicated rotational movement of the sixth gear, the lock contains two transmission rods (17) with a corresponding rack (18), and two dyatsya meshed with the sixth gear wheel on opposite sides thereof. 11. The castle according to any one of paragraphs. 1-10, characterized in that it contains a rod (20), on which the bolt (3) can be engaged, said pivot arm (4) contains a first shoulder (30) extending essentially in the radial direction and engaging, usually by contact with said rod, the first shoulder (30) being engaged with its free end (31) with a flange (32) located on the free end of said rod, and the first shoulder is located between the flange and the bolt, the lock containing the first spring (33) located between the specified rod and box-shaped the housing of the lock, to create traction on the specified rod in the direction of the specified extended position of the bolt. 12. The lock according to claim 11, characterized in that it further includes a rotatable body (34) coaxial with said pivot arm (4) and disconnected from said pivot arm, wherein the rotatable body comprises a second arm (35) different from the first arm, having a radial extension engaging, usually by contact, with the rod, the second shoulder being engaged with its free end (36) with the indicated flange (32) on the side opposite the first shoulder relative to the rod; the second shoulder is located between the flange and the bolt, where the rotatable body is equipped with a non-circular through hole (37) for the handle shaft to pass in order to realize a mechanical connection between the handle and the rotatable body; the rotatable body (34) comprises a main body (34a) with said through hole (37); the secondary body (34b) with the specified second shoulder, fully connected to the main body, the lock contains a second spring (38) located between the specified rotatable body and the box-shaped body of the lock, to create traction on the specified rotatable body in the direction of the resting state of the handle.

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