Lock device

Abstract

A lock device comprises a control pawl such that, in at least one state of the lock device, when rotating about an axis from a first rest position of a handle actuator to a second activation position of the handle actuator due to the action of an elastic return device, the control pawl retracts a latch pin into the housing along a central axis of the housing, the resilient return means tends to bring the control pawl back to the first rest position. During a rotational movement of the pawl itself from the second active position to the first rest position due to the action of the elastic return means, a rod-like projection of the control pawl or a predetermined portion of the lock device, which is integrally formed with the housing and is located inside the housing, is directly coupled to a movable portion of the linear damper, the first fixed portion and the second fixed portion are coupled to each other to determine movement of the movable portion relative to the first fixed portion in a direction between the respective position of the maximum length and the position of the minimum length to generate a damping effect on travel of the control pawl and the respective handle actuator from the second active position to the first rest position.

Description

Technical Field

[0001] The utility model aims to provide a lock device with a device for buffering a handle returning to its rest state. Background Art

[0002] The locking device generally comprises a housing that can be inserted into a cutout in the door leaf, and a counter housing (or strike plate) that can be inserted into a cutout in the door frame or in an additional door leaf. A latch, equipped with a latch pin at one end, can move between a retracted position in the housing, in which the latch pin is located inside the housing, and a position partially withdrawn from the housing, in which the latch pin is withdrawn from the housing and, when the door leaf is closed against the door frame or a corresponding second door leaf, the latch pin is inserted into a corresponding seat in the counter housing (or strike plate). The engagement of the latch pin in the corresponding seat determines the mechanical relocking, and the door cannot be opened simply by pressing on the door leaf. In conjunction with the mechanical relocking action, the locking device can also provide a key device that allows the latch itself to be blocked in its partially withdrawn position and can only be removed by activating a key. There are also other types of locking devices in which the blocking is performed using a key device by activating an additional latch that is independent of the first latch. In general, there may be various types of locking devices, which in any case, at least in one of their configurations, allow the latch and the latch pin to be brought into their retracted position by the action of a handle or a knob, so that the mechanical relocking can be released and the door leaf opened. The retraction of the latch pin is usually carried out by a rotation control pawl, which is connected to the handle (or knob) and operatively connected to the latch, so that by rotating it moves the latch itself, thereby retracting the latch pin. The handle (or knob) is usually equipped with a return spring, which is loaded to retract the latch and open the door leaf when the handle is lowered (or the knob is turned). Once the door is opened, the spring automatically returns the handle (or knob) to the initial position when the handle (or knob) is released. If not controlled by the user's hand, this movement can cause the handle (or knob) to be impacted at the end of its travel, thereby generating annoying noise and, in the long run, possible damage to the mechanism.

[0003] To solve this problem, a known solution is to associate a cam on the handle pin outside the lock housing, which interacts with a damping element also placed outside the lock housing when the handle returns to its rest position by means of a spring. This solution (as shown, for example, in publication JP 2015 31070A) requires additional space relative to the lock and is very cumbersome. Moreover, it is not optimized from the point of view of the number of elements involved, which require a certain number of elements in addition to those of the lock itself. Utility Model Content

[0004] The purpose of the present invention is to overcome the above-mentioned drawbacks by providing a lock having means for cushioning the return of the handle to its resting state, which allows reducing the space required for the lock-handle assembly to a minimum, limiting the necessary elements to a minimum.

[0005] According to the present invention, these and other objects are achieved by a locking device having a device for buffering the return of the handle to its rest state, which will become more apparent from the following description, and the locking device has the structural and functional characteristics of further embodiments of the present invention as determined by the attached independent claims, as well as the attached dependent claims and the corresponding dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The invention is explained in more detail below with the aid of the accompanying drawings, which represent merely exemplary and non-limiting embodiments.

[0007] Figure 1 A side view of a lock device according to the invention is shown, with a housing and a counter housing or strike plate. The control pawl and the linear damper are shown in a state corresponding to the rest position of the handle actuator (not shown).

[0008] Figure 1A Shows Figure 1 The shell edge Figure 1 Front view taken along the AA section line.

[0009] Figure 1B Shows Figure 1A Magnified detail of the cross section.

[0010] Figure 2 Shows Figure 1 , with the latch in a partially withdrawn position and the latch pin withdrawn from the housing. The control pawl and linear damper are shown in a state corresponding to the rest position of the handle actuator (not shown).

[0011] Figure 2A Shows a properly enlarged Figure 2 details.

[0012] Figure 3 is similar to Figure 2 of Figure 1 , wherein the latch is in an intermediate position between the partially withdrawn position and the retracted position, wherein the latch pin is only partially withdrawn from the housing. The control pawl and the linear damper are shown in a state corresponding to a handle actuator (not shown) being in an intermediate position between the rest position and the activated position.

[0013] Figure 3AShows a properly enlarged Figure 3 details.

[0014] Figure 4 is similar to Figure 2 and Figure 3 of Figure 1 , wherein the latch is in its retracted position with the latch pin located inside the housing. The control pawl and linear damper are shown in a state corresponding to the activated position of the handle actuator (not shown).

[0015] Figure 4A Shows a properly enlarged Figure 4 details.

[0016] Figure 5 Shows Figure 1 Side view of the housing (similar to Figure 1 view) and the front view (similar to Figure 2 ), partially cut away along section line BB. The control pawl and the linear damper are shown in a state corresponding to the activated position of the handle actuator (not shown).

[0017] Figure 5A Shows Figure 5 Enlarged detail of the section along line BB in FIG.

[0018] Figure 5B Shows the use of Figure 5 CC plane Figure 5 Detailed section of the shell (section plane is also Figure 4A ).

[0019] Figure 6 is similar to Figures 2 to 4 of Figure 1 , with the latch in its retracted position with the latch pin located inside the housing. The control pawl and linear damper are shown in a state corresponding to an intermediate position of the handle actuator (not shown) between the rest position and the activated position, particularly in this case when the handle actuator is returning to its rest position after retracting the latch pin.

[0020] Fig. 6A Shows a properly enlarged Figure 6 details.

[0021] Figure 7 Similar to Figure 1 The views of show a housing equipped with different embodiments of elements for abutting and positioning a linear damper in the housing. A detail is indicated with D1.

[0022] Fig. 7A Shows Figure 7 Details of D1.

[0023] Figure 8 Similar to Figure 2 The view shows Figure 7 The housing of the linear damper clearly shows the positioning of the linear damper and shows its details.

[0024] Fig. 8A Shows a properly enlarged Figure 8 details.

[0025] Fig. 9 Shows Figure 7 and Fig. 8A Detail of the section in the DD plane.

[0026] Fig.10 Shows Figure 7 and Fig. 8A Detail of the section in the FF plane.

[0027] Fig.11 Shows Figure 7 and Fig. 8A Detail of the cross section in the EE plane.

[0028] Fig.12 An embodiment of a linear damper for use in a lock device which is the object of the present invention is schematically illustrated.

[0029] Fig.13 A side view of a lock device according to the present invention is shown, with a housing and a counter housing or strike plate, wherein the housing has a side surface removed to show its interior and has a dashed rectangle indicating details. The control pawl and the linear damper are shown in a state corresponding to the rest position of the handle actuator (not shown). The latch is in its partially withdrawn position and the latch pin is withdrawn from the housing.

[0030] Fig.14 Shows a properly enlarged Fig.13 details. Fig.14 Also stated Fig.17 The details shown are shown in the figure and are appropriately enlarged.

[0031] Fig.14A Shows Fig.14 CC profile.

[0032] Fig.15 yes Fig.13 , wherein the latch is in an intermediate position between the partially withdrawn position and the retracted position, wherein the latch is only partially withdrawn from the housing. The control pawl and the linear damper are shown in a state corresponding to a handle actuator (not shown) being in an intermediate position between the rest position and the activated position.

[0033] Fig.15A Shows a properly enlarged Fig.15 details.

[0034] Fig. 15B Shows Fig.15A BB profile.

[0035] Fig.16 is similar to Fig.13 and Fig.15 The shell Fig.13 , wherein the latch is in its retracted position with the latch pin located inside the housing. The control pawl and linear damper are shown in a state corresponding to the activated position of the handle actuator (not shown).

[0036] Fig.16A Shows a properly enlarged Fig.16 details.

[0037] Fig. 16B Shows Fig.16A AA profile.

[0038] Fig. 16C Shows Fig.16A DD profile.

[0039] Fig.16D Shows Fig.16A EE profile.

[0040] Fig.17 yes Fig.13 , with the latch in its retracted position with the latch pin located inside the housing. The control pawl and linear damper are shown in a state corresponding to the rest position of the handle actuator (not shown), when the handle actuator has returned to its rest position after the latch pin has been retracted. Fig.17 The details highlighted in the dashed rectangle are as follows Fig.14 shown. DETAILED DESCRIPTION

[0041] With reference to the accompanying drawings, a lock device with a device for cushioning the return of the handle to its rest state comprises a housing 1 extending in the plane of extension of the housing between two parallel face portions 10a, 10b of the housing. The parallel face portions 10a, 10b of the housing 1 are at a predetermined distance from each other. The housing 1 can be inserted into a corresponding cutout formed in a door leaf, the two face portions 10a, 10b of the housing being parallel to the plane of extension of the door leaf. The cutouts of the door leaf and the housing 1 are not shown in the figures.

[0042] The locking device further comprises a latch 2 equipped with a latch pin 20 at one end. The latch 2 is accommodated in the housing 1 and is movable between a first retracted position, in which the latch pin 20 is located in the housing 1, and a second partially withdrawn position, in which the latch pin 20 is withdrawn from the housing 1. The first retracted position of the latch 2 is in particular in the case of an attached Figure 4 , Figure 5 , Figure 6 , Fig.14 , Fig.17 The second partially extracted position of the latch 2 is particularly shown in the attached Figure 1 , Figure 2 , Figure 7 , Figure 8 , Fig.13 Shown in. Figure 3 , Fig.15 An intermediate position of the latch 2 between the first retracted position and the second partially extracted position is shown.

[0043] The locking device comprises a counter housing or strike plate 3 which can be inserted into a corresponding cutout formed in the door frame or in the additional door leaf. In the figure, the door frame (or additional door leaf) and the corresponding cutout are not shown. The counter housing or strike plate 3 is provided with a seat 30 for the latch pin 20 to be inserted into when the latch pin 20 is withdrawn from the housing 1. When the relative position of the door leaf and the door frame (or additional door leaf) is as shown in FIG. Figure 1 , Fig.13 As shown, such insertion is obviously possible when the housing 1 and the outer housing or strike plate 3 are aligned one behind the other, and the latch 2 (and the corresponding latch pin) is in front of the seat 30 of the outer housing or strike plate 3.

[0044] The locking device comprises a control pawl 4 accommodated inside the housing 1. The control pawl 4 is provided with a seat 40 for inserting a pin of a handle actuator. The handle actuator (not shown in the figure) may be in the form of a knob, a handle and / or a rod of an appropriate shape. The control pawl 4 is accommodated in the housing 1 and rotates about a rotation axis R1, which is perpendicular to the two faces 10a, 10b of the housing 1 and is a rotation axis shared by the control pawl 4 and the pin of the handle actuator when the handle actuator is installed. The control pawl 4 can rotate relative to the housing 1 about the rotation axis R1 between a first rest position of the handle actuator and a second activation position of the handle actuator. The first rest position of the handle actuator is particularly shown in Figure 1 , Figure 2 , Figure 2A , Figure 7 , Figure 8 , Fig.13 , Fig.14 , Fig.14A and Fig.17 middle.

[0045] The control pawl 4 is operably connected to the latch pin 2. By means of this operative connection, the movement of the latch 2 between the first retracted position and the second partially withdrawn position is managed. By means of the operative connection, some or all of the modes according to which the movement of the latch 2 between the first retracted position and the second partially withdrawn position can be managed. The operability of the connection between the control pawl 4 and the latch 2 is generally defined and varied based on one or more configurations of the locking device. In general, the locking device can adopt one or more configurations, which may be selectively activated by means of corresponding devices (such as a key selector or the like), or the configuration is automatically determined by the mutual interaction of one or more elements within the locking device itself. The connection between the control pawl 4 and the latch 2 generally depends on the configuration that the locking device can adopt.

[0046] A first locking device variant can provide such a coupling that the latch 2 remains constant under the influence of the control pawl 4. A rotation of the control pawl 4 in a given direction always produces a corresponding movement of the latch 2: a first rotation direction brings the latch 2 to a retracted position inside the housing 1, while a second rotation direction opposite to the first rotation direction brings the latch 2 to a position partially extracted from the housing 1 (and thus engages the latch pin 20 in the seat 30 of the counter housing or strike plate 3). In this case, all the configurations of the locking device are such that the travel of the control pawl 4 from the first rest position to the second activated position causes the latch pin 20 to retract into the housing 1. In a locking device of this type, a stable locking of the door leaf by key locking (preventing the door from being opened by a simple action on the handle actuator) is only possible with an additional latch operated by a key.

[0047] A second locking device variant may provide a connection so that the latch 2 is affected by the control pawl 4 only in one of its two rotation directions about the axis R1, in particular the direction that leads it to the retracted position in the housing 1, while the rotation of the control pawl 4 in the opposite direction leaves the latch 2 undisturbed. Thus, in this second locking device variant, the locking device itself may present a situation (or construction) in which, once the latch 2 has been retracted for the first time, further movement of the handle actuator does not cause further movement of the latch 2, the latch 2 remaining in its retracted position unless the operation of other parts of the locking device intervenes. In fact, in this second variant, the locking device typically includes a device for re-arming the latch 2, which brings the latch 2 back from the retracted position to the partially withdrawn position and is not necessarily activated by the use of the handle actuator. The first type of re-arming device includes an elastic return device (in particular a spring) active on the latch 2 to keep it in the partially withdrawn position. In this case, when the control pawl 4 is rotated about the axis R1 in the direction of the latch 2 from the second partially withdrawn position to the first retracted position, the handle actuator is subjected to an elastic force that loads the elastic return device: once the user releases the handle actuator, the load (charge) obtained by the elastic return device returns the latch 2 to the second partially withdrawn position. The working principle of the second type of re-equipping device is as follows. The latch pin 20 of the latch 2 can include a magnet thereon. The additional magnet is placed inside the seat 30 of the counter housing or strike plate 3. The polarity of the two magnets is such that when the door leaf containing the housing 1 is aligned with the counter housing or strike plate 3 of the door frame (or on the additional door leaf), the magnetic fields exert an attractive force on each other, which causes the latch pin 20 to be withdrawn from the housing 1 and inserted into the seat 30 of the counter housing or strike plate 3, thereby determining the subsequent re-equipping movement of the latch 2. A compression spring 21 can be provided in the housing 1, which holds the latch 2 itself in the same position when the latch 2 is in the first retracted position. In particular, the compression spring 21 can be in a relaxed state when the latch 2 is in the first retracted position, and in a compressed state when the latch 2 moves towards the second partially withdrawn position. The force of the compression spring 21 can be calibrated in such a way that only a certain strength of magnetic attraction can overcome the resistance due to the compression of the spring 21 itself, thereby allowing the latch 2 to be re-armed to the partially withdrawn position. In this way, re-arming of the latch is only possible when the latch pin is placed in front of the seat 30 in the counter housing or strike plate 3, where the attraction magnetic field strength between the magnet in the seat 30 and the magnet on the latch pin 20 is higher, thus allowing such a re-arming movement. The accompanying drawings illustrate the latter type of re-arming device only by way of example and not by way of limitation. In particular, in the second partially withdrawn position of the latch 2 shown, Figure 1 , Figure 2 , Figure 7 , Figure 8 , Fig.13 In the figure, the compression spring 21 is shown in a compressed state, while in the figure showing the first retracted position of the latch 2 Figure 4 , Figure 5 , Figure 6 , Fig.16 , Fig.17 , the compression spring 21 is shown in an extended state. Figure 3 , Fig.15 An intermediate position of the latch 2 is shown, in which the magnetic attraction between the magnet on the latch pin 20 and the magnet in the counter housing or strike plate 3 draws the latch pin 20 itself out of the housing 1, so that the spring is in a partially compressed state.

[0048] The known modes of controlling the operational connection between the pawl 4 and the latch 2, in various operational configurations of various types of locking devices, in particular those briefly described above, are the common property of those skilled in the art. They may include various different technical solutions that lead to the definition and possible selection of different configurations of the locking device itself when using the locking device. These different solutions are within the capabilities of those skilled in the art and are equivalent for the purposes of the present invention.

[0049] For the purpose of the present invention, the lock device must have at least one state (or configuration) in which the travel of the control pawl 4 from the first rest position to the second activation position causes the latch pin 20 to retract into the housing 1, but the possibility that more than one state or configuration may exist is not excluded (at most, there is a possibility similar to the case of the first lock device variant described above: in which, in all configurations or states of the lock device, the travel of the control pawl 4 from the first rest position to the second activation position causes the latch pin 20 to retract into the housing 1). In the lock device that is the object of the present invention, the control pawl 4 is operably connected to the latch 2 so that, at least in a predetermined state of the lock device, the travel of the control pawl 4 from the first rest position to the second activation position causes the latch pin 20 to retract into the housing 1. The path from the first rest position to the second activation position occurs according to the action of the elastic return device 5, which acts so that the control pawl 4 tends to be brought back to the first rest position. The elastic return device 5 preferably includes a spring that generates a return torque around the rotation axis R1 of the control pawl 4. Preferably, the spring is a torsion spring acting on the control pawl 4. The torsion spring in turn comprises a first end 50 abutting against the wall of the housing 1, and a second end 51 abutting against a portion of the control pawl 4. The movement of the latch 2 between the first retracted position and the second partially extracted position occurs in the extension plane of the housing 1 and along the central axis S1 of the housing 1. The control pawl 4 is placed adjacent to the latch 2, between the central axis S1 along which the latch 2 moves and the first side wall 11a of the housing 1, the first side wall 11a being placed parallel to the central axis S1 and joining the second side wall 11b and the third side wall 11c of the housing 1 together. The second side wall 11b of the housing 1 comprises the first side wall 10a of the two parallel side walls 10a, 10b of the housing 1. The third side wall 11c of the housing 1 comprises the second side wall 10b of the two parallel side walls 10a, 10b of the housing 1.

[0050] The locking device comprises a linear damper 6, which is placed:

[0051] - in the housing 1 , the linear damper is also located in the space next to the latch 2 and between the central axis S1 along which the latch 2 moves and the first side wall 11 a of the housing 1 ; or

[0052] - Located inside the housing 1 and fixed to the control pawl 4.

[0053] The linear damper 6 further comprises a first fixed portion 6a and a second portion 6b which can move linearly relative to the first fixed portion 6a between a position corresponding to a maximum length of the linear damper 6 and a position corresponding to a minimum length of the linear damper 6 .

[0054] The fixing of the wall of the housing 1 to a predetermined position inside the housing 1 itself ( Figures 1 to 11) corresponds to the linear damper 6 placed in the housing 1, which is also located in the space close to the latch 2 and between the central axis S1 along which the latch 2 moves and the first side wall 11a of the housing 1.

[0055] The first fixing portion 6a ( Fig.13 ) corresponds to the linear damper 6 placed inside the housing 1 and fixed to the control pawl 4. The fixing of the linear damper 6 to the control pawl 4 is achieved by the first fixing portion 6a of the linear damper 6 ( Figures 13 to 17 ).

[0056] The damping effect of the linear damper 6 itself corresponds to the relative movement of the second portion 6b, which can move relative to the first fixed portion 6a in a first direction of two directions between the corresponding position of the maximum length and the corresponding position of the minimum length.

[0057] The linear damper 6 can exert its damping effect when stretched, in which case the damping effect of the linear damper 6 itself corresponds to the relative movement of the second portion 6b from the corresponding position of the minimum length toward the corresponding position of the maximum length relative to the first fixed portion 6a. In this case, the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length corresponding to the damping effect of the linear damper 6 itself is the extension direction of the linear damper 6 itself.

[0058] The linear damper 6 can exert its damping effect when it is shortened. In this case, the damping effect of the linear damper 6 itself corresponds to the relative movement of the movable second part 6b relative to the first fixed part 6a from the relative position of the maximum length to the relative position of the minimum length. In this case, the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length corresponding to the damping effect of the linear damper 6 itself is the shortening direction of the linear damper 6 itself.

[0059] Preferably, the relative movement of the second portion 6b being able to move relative to the first fixed portion 6a in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length of the linear damper 6 is the relative movement of the second portion 6b being able to move relative to the first fixed portion 6a from the corresponding position of the maximum length of the linear damper 6 itself to the corresponding position of the minimum length (therefore, obviously, this is a shortening movement of the linear damper 6). The accompanying drawings show an embodiment presenting this preferred feature by way of example and not by way of exclusiveness.

[0060] The linear damper can be of hydraulic or gas type. The relative movement of the second part 6b movable with respect to the first fixed part 6a is of linear telescopic type. During the movement in the direction from the position corresponding to the maximum length of the linear damper 6 to the position of its minimum length, one of the two parts 6a, 6b can reenter the other part 6b, 6a.

[0061] Re-arming means (e.g. one or more springs) may be provided which, at the end of the damping action, spontaneously bring the linear damper 6 back to its re-actuable configuration. In particular, in the embodiment shown in the figures, the re-arming means may be provided to bring the two parts 6a, 6b of the linear damper 6 back from a corresponding position of minimum length to a corresponding position of maximum length. Fig.12 Schematically shown, the linear damper 6 may include a sheath 61 in which a piston 62 slides. The piston 62 is connected to a rod or bar 63 that slides in a groove of the sheath 61. An abutment head 64 may be provided at the end of the rod or bar 63 remote from the piston 62. The sheath 61 may be a first fixed part 6a of the linear damper 6, while the piston 62 and the rod or bar 63 (possibly with an abutment head 64 at the end of the rod or bar 63) may be a movable second part 6b of the linear damper 6. However, the configuration of the linear damper 6 may also be the opposite. In particular:

[0062] - When the linear damper 6 is placed in the housing 1, the linear damper is also in the space close to the latch 2 and is located between the central axis S1 along which the latch 2 moves and the first side wall 11a of the housing 1 ( Figures 1 to 11 ), in which case the rod or bar 63 (possibly also via an abutment 64) can be fixed to one or more of the walls of the housing 1 to represent a first fixed part 6a of the linear damper 6, while the sheath 61 can be kept movable relative to said wall (possibly in a guide) and thus become a movable second part 6b of the linear damper 6. In the latter case, the part 65 of the sheath 61 remote from the end of the rod or bar 63 opposite the piston 62 can be configured as an additional abutment;

[0063] - When the linear damper 6 is placed inside the housing 1 and fixed on the control pawl 4 ( Figures 13 to 17 ), the rod or bar 63 (possibly also via an abutment head 64) can be fixed on the control pawl 4 to represent a first fixed part 6a of the linear damper 6, while the sheath 61 can be kept movable relative to the control pawl 4 (possibly in a guide) and thus become a movable second part 6b of the linear damper 6. In the latter case, the portion 65 of the sheath 61 remote from the end of the rod or bar 63 opposite the piston 62 can be configured as an additional abutment head.

[0064] In the figures, an embodiment is explicitly shown (by way of illustrative but not limiting example) in which a linear damper 6 has a sheath representing its first fixed part 6a and a rod or bar (with an abutment head) representing its movable second part 6b.

[0065] Reference Figures 1 to 11, a rod-shaped protrusion 41 is integrally formed on the control pawl 4, and during the rotational movement of the control pawl 4 from the second activation position to the first rest position due to the action of the elastic return device 5, the rod-shaped protrusion 41 is directly connected to the second part 6b of the linear damper 6, thereby determining the movement of the second part 6b relative to the first fixed part 6a in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length, thereby generating a damping effect, which has a cushioning effect on the travel of the control pawl 4 and the corresponding handle actuator from the second activation position to the first rest position. In this way, once an action is applied to the handle actuator and therefore to the control pawl 4, by retracting the latch pin 20 together with the latch 2 into the housing 1, the control pawl 4 is transferred from the first rest position to the second activation position, and at the same time the elastic return device 5 is loaded, the user can abandon the handle actuator itself without having to worry about the handle actuator generating noise and / or harmful impact when returning to the first rest position (automatically due to the action of the elastic return device 5). During the rotation of the control pawl 4 about the rotation axis R1 from the second activation position of the handle actuator to the first rest position, a first section can be provided in which the rod-shaped protrusion 41 of the control pawl 4 is temporarily decoupled from the second part 6b of the linear damper 6 to meet and couple with the second part 6b during the movement. Advantageously, the rod-shaped protrusion 41 of the control pawl 4 always remains directly coupled to the second part 6b of the linear damper 6 by the free end 42 of the rod-shaped protrusion 41. In this way, any small noise generated by the contact between the part of the rod-shaped protrusion 41 and the part of the second part 6b of the linear damper 6 can also be avoided. In the case where the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length corresponding to the damping effect of the linear damper 6 itself is the direction of elongation of the linear damper 6 itself, the direct connection between the rod-shaped protrusion 41 and the movable second part 6b of the linear damper 6 determines the traction effect on the linear damper 6. The coupling in this case may be an engagement between the free end of the rod-like protrusion 41 and the corresponding free end of the movable part 6b of the linear damper 6. In the case where the first of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length corresponding to the damping action of the linear damper 6 itself is the direction of shortening of the linear damper 6 itself, the direct coupling between the rod-like protrusion 41 and the movable second part 6b of the linear damper 6 determines the compression action on the linear damper 6. In this case, the coupling may be an abutment or contact between the free end of the rod-like protrusion 41 and the corresponding free end of the movable part 6b of the linear damper 6.In particular, during the rotational movement of the control pawl 4 from the second activation position to the first rest position due to the action of the elastic return means 5, the rod-shaped protrusion 41 is in direct contact with the second portion 6b of the linear damper 6, determining the movement of the second portion 6b relative to the first portion 6a from the corresponding position of maximum length towards the corresponding position of minimum length, and thus determining the damping effect, thereby having a cushioning effect on the travel of the control pawl 4 and the corresponding handle actuator from the second activation position to the first rest position. Preferably, the rod-shaped protrusion 41 of the control pawl 4 has a rounded surface at its free end 42 to approach a shape that is at least cylindrical or spherical, so as to facilitate the contact between the free end 42 and the end 60b of the movable second portion 6b of the linear damper 6, which, in the position of maximum length of the linear damper 6, is away from the first fixed portion 6a of the linear damper 6. From now on, for simplicity of description, said end 60b of the movable second part 6b of the linear damper 6, which is remote from its first fixed part 6a at the position of the maximum length of the linear damper 6, will be simply referred to as "the remote end 60b of the movable second part 6b". Due to the shape of the free end 42 of the rod-like protrusion 41, a permanent and jam-free contact between the free end 42 of the rod-like protrusion 41 and said remote end 60b of the movable second part 6b is facilitated. This occurs even in the case where the fixing and positioning of the linear damper 6 is hindered in a specific direction. In particular, due to the curvature of the free end 42, the rotational movement of the control pawl 4 (and the corresponding rod-like protrusion 41) does not hit the remote end 60b of the movable second part 6b. In. Figures 1 to 11 In the embodiment shown by way of example in FIG. 4 , the free end 42 of the rod-shaped protrusion 41 is made of a shaped portion 43 of a suitable shape (for example: at least partially cylindrical or spherical in the portion in contact with the end 60b away from the movable second part 6b). The shaped portion 43 can be made as a piece on the rod-shaped protrusion 41, or by adding relevant elements (for example, inserts). Figures 1 to 11 In the embodiment shown by way of example in FIG. 1 , the distal end 60 b of the movable second part 6 b is an abutment head 64 at the end of a rod or stem 62 remote from the piston 62. Advantageously, the distal end 60 b of the movable second part 6 b can also be made into a rounded surface in contact with the free end 42 of the rod-like projection 41.

[0066] In the attached Figures 13 to 17In the embodiment, an illustrative but non-limiting example is explicitly shown, in which the linear damper 6 has a sheath representing its first fixed part 6a, fixed to the pawl 4, and a rod or bar (with an abutment head) representing its movable second part 6b. Figures 13 to 17 During the rotational movement of the control pawl 4 from the second activation position to the first rest position due to the action of the elastic return means 5, the movable second part 6b of the linear damper 6 is directly connected to a predetermined part 9 of the locking device that is integral with the housing 1 and inside the housing 1, thereby determining its (the second part 6b itself) movement relative to the first fixed part 6a in the first of the two directions between the corresponding position of maximum length and the corresponding position of minimum length, and thus determining a damping effect, which has a cushioning effect on the travel of the control pawl 4 and the corresponding handle actuator from the second activation position to the first rest position. In this way, once an action is applied to the handle actuator and therefore to the control pawl 4, by retracting the latch pin 20 together with the latch 2 into the housing 1, the control pawl 4 is transferred from the first rest position to the second activation position, and at the same time loading the elastic return means 5, the user can release the handle actuator itself without having to worry about noise and / or harmful impacts when the handle actuator returns to the first rest position (automatically due to the action of the elastic return means 5). Referring again to the Figures 13 to 17 During the rotation of the control pawl 4 about the rotation axis R1 from the second activation position of the handle actuator to the first rest position, a first section can be provided in which the movable second part 6b of the linear damper 6 and the predetermined part 9 of the locking device which is integral with and inside the housing 1 are temporarily disconnected so as to meet and connect with the predetermined part 9 during the movement. Advantageously, the movable second part 6b of the linear damper 6 always remains directly connected to the predetermined part 9 of the locking device which is integral with and inside the housing 1 through one end of the movable second part 6b (away from the first fixed part 6a of the linear damper 6). In this way, any small noise due to contact between a part of the end of the movable second part 6b (away from the first fixed part 6a of the linear damper 6) and the predetermined part 9 of the locking device which is integral with and inside the housing 1 can also be avoided. Referring again to the Figures 13 to 17In the case where the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length corresponding to the damping effect of the linear damper 6 itself is the direction of extension of the linear damper itself, the direct connection between the end of the movable second part 6b (far away from the first fixed part 6a of the linear damper 6) and the predetermined part 9 of the lock device integrated with the housing 1 and inside thereof determines the traction effect on the linear damper 6. In this case, the connection can be the engagement between the free end of the movable second part 6b (far away from the first fixed part 6a of the linear damper 6) and the corresponding free end made on the predetermined part 9 of the lock device integrated with the housing 1 and inside thereof. In the case where the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length corresponding to the damping effect of the linear damper 6 itself is the direction of shortening of the linear damper 6 itself, the direct connection between the end of the movable second part 6b (far away from the first fixed part 6a of the linear damper 6) and the predetermined part 9 of the lock device integrated with the housing 1 and inside thereof determines the compression effect on the linear damper 6. In this case, the connection can be an abutment or contact between the free end of the movable second part 6b (away from the first fixed part 6a of the linear damper 6) and the corresponding free end made on the predetermined part 9 of the locking device integral with the housing 1 and inside it. In particular, during the rotational movement of the control pawl 4 from the second activation position to the first rest position due to the action of the elastic return device 5, the movable second part 6b of the linear damper 6 is directly in contact with the predetermined part 9 of the locking device integral with the housing 1 and inside it, determining its correspondence (of the second part 6b itself) relative to the first fixed part 6a of the linear damper 6 from the corresponding position of maximum length to the corresponding position of minimum length, and thus determining the damping effect, which has a buffering effect on the travel of the control pawl 4 and the corresponding handle actuator from the second activation position to the first rest position. Referring again to Figures 13 to 17 Preferably, during the rotational movement of the control pawl 4 from the second activation position to the first rest position due to the action of the elastic return device 5, the movable second part 6b of the linear damper 6 always remains directly connected to the predetermined part 9 of the locking device integral with the housing 1 and inside it through the end of the movable second part 6b away from the first fixed part 6a. In this way, it is also possible to avoid any small noise caused by the contact between the part of the end of the movable second part 6b (away from the first fixed part 6a of the linear damper 6) and the predetermined part 9 of the locking device integral with the housing 1 and inside it. Referring again to Figures 13 to 17Preferably, the end of the movable second part 6b of the linear damper 6 remote from the first fixed part 6a of the linear damper 6 itself has a rounded surface close to at least a cylindrical or spherical shape to facilitate contact between said free end and said predetermined part 9 of the locking device integral with the housing 1 and inside it. Referring again to Figures 13 to 17 (and always meaning that said end of the movable second part 6b of the linear damper 6, especially in the position of maximum length of the linear damper 6, which is remote from its first fixed part 6a will be simply referred to as "the remote end of the movable second part 6b"), due to the shape of the remote end of the movable second part 6b, a permanent and non-interfering contact between said remote end of the movable second part 6b and said predetermined part 9 of the locking device integral with the housing 1 and inside it is facilitated. This happens even in the case where the fixing and positioning of the linear damper 6 are blocked in a specific direction. In particular, due to the curvature that the remote end of the movable second part 6b has, the rotational movement of the control pawl 4 (and therefore the remote end of the movable second part 6b) does not hit said predetermined part 9 of the locking device integral with the housing 1 and inside it. The remote end of the movable second part 6b is made of a shaped part of a suitable shape (for example: at least partially cylindrical or spherical in the part in contact with said predetermined part 9 of the locking device integral with the housing 1 and inside it). The shaped portion can be made as a piece on the end remote from the movable second part 6b, or by adding relevant elements (such as inserts). Figures 13 to 17 In the embodiment shown by way of example in FIG. 2 , the distal end of the movable second part 6 b is an abutment head 64 located at the end of the rod or bar 62 distal from the piston 62 .

[0067] Reference Figures 1 to 17, the lock device preferably comprises a selective connector 7 of the control pawl 4 to the latch 2. The selective connector 7 represents a specific mode of operative connection between the control pawl 4 and the latch 2. The selective connector 7 has a first configuration, in which the movement of the control pawl 4 from the first rest position to the second activation position causes the latch pin 20 to retract into the housing 1, and a second configuration, in which the movement of the control pawl 4 from the first rest position to the second activation position has no effect on the position of the latch pin 20. The movement of the selective connector 7 from the first configuration to the second configuration (and vice versa) is operated by a key selector (not shown). In the embodiment shown in the figures, the selective connector 7 is in the form of a guided movable slide in the housing 1. The selective connector 7 can be moved back and forth along a first predetermined axis between a first position of the first configuration in which the selective connector 7 is located and a second position of the second configuration in which the selective connector 7 is located, which is opposite to the first position. The movement of the selective connector 7 from its first position to its second position and from its second position to its first position is operated by a key selector (not shown) which produces a corresponding movement from the first configuration to the second configuration of the selective connector 7 and from the second configuration to the first configuration of the selective connector 7, respectively. In its second position (corresponding to its second configuration), the selective connector 7 does not have any part that could interfere with the movable part of the control pawl 4, in particular, the selective connector 7 does not have any part that interferes with the offshoot 44 of the control pawl 4 for abutting against the selective connector 7 itself. This situation is not shown in the figures. In its first position (corresponding to its first configuration), the selective connector 7 can abut on its abutment surface by means of the offshoot 44 of the control pawl 4, the control pawl 4 rotating about the axis of rotation R1 when it moves from its first rest position to its second rest position. This situation is shown in the figures. When adjacent to the branch portion 44, and as the control pawl 4 rotating around the rotation axis R1 continues to move from the first rest position to the second enabled position, the selective connector 7 moves toward its third position, which is different from the first two positions. In the movement toward its third position, the connection between the selective connector 7 and the latch 2 (for example, through a ramp) causes the latch pin 20 to retract into the housing 1.

[0068] exist Figures 1 to 11 In the embodiment shown, in which the linear damper 6 is stably associated with the inner wall of the housing 1 at a predetermined and defined position inside the housing 1 itself, the housing 1 comprises abutment and positioning elements for abutting and positioning the linear damper 6 so as to determine a stable association with the inner wall of the housing 1. Preferably, these abutment and positioning elements are defined by a sheet portion of a predetermined thickness obtained by cutting and / or folding and / or shaping a portion of the wall of the housing 1.

[0069] exist Figures 13 to 17 In the embodiment shown, in which the linear damper 6 is fixed to the control pawl 4, said predetermined portion 9 of the locking device integral with the housing 1 comprises at least one abutment element 90 of the movable second portion 6b of the linear damper 6. Preferably, the at least one abutment element 90 is defined by a sheet portion of predetermined thickness obtained by cutting and / or folding and / or forming a portion of the wall of the housing 1. If it is desired or necessary to interact with a specific shape of the end of the movable portion 6b remote from the fixed portion 6a of the linear damper 6, the predetermined portion 9 of the locking device integral with the housing 1 may comprise a plurality of abutment elements 90. Additional abutment elements 90 may also be defined by a sheet portion of predetermined thickness obtained by cutting and / or folding and / or forming a portion of the wall of the housing 1.

[0070] In general, refer to Figures 1 to 17 In all the embodiments shown, the housing 1 can be made of sheet metal from which these sheet parts can be easily obtained. The housing 1 can be made of two half-shells, one of which comprises the first face 10a of the housing 1 and the other half-shell comprises the second face 10b of the housing 1. The side walls of the housing 1 corresponding to their thickness between the faces 10a, 10b can be obtained on only one of the two half-shells or on both half-shells. In the latter case, these side walls of the housing 1 corresponding to their thickness between the faces 10a, 10b can be obtained by overlapping and / or juxtaposing the parts thereof carried by each of the two half-shells.

[0071] The housing 1 includes a fourth side wall 11 d which is perpendicular to the first side wall 11 a of the housing 1 and also connects the second side wall 11 b and the third side wall 11 c of the housing 1 together.

[0072] Specific reference Figures 13 to 17 In the embodiment shown, in which the linear damper 6 is fixed to the control pawl 4, the first fixing portion 6a of the linear damper 6 is accommodated in a seat 40 formed on one side of the control pawl 4. The seat 40 may be, for example, a partially open (or semi-cylindrical) cylindrical seat for inserting the first fixing portion 6a of the linear damper 6. Preferably, the first fixing portion 6a of the linear damper 6 has a cylindrical portion that can be inserted into the seat 40. Fig.12 In the embodiment of the linear damper 6 particularly shown in FIG. 1 , when the first fixing portion 6a of the linear damper 6 is a sheath 61, the cylindrical portion insertable into the seat 40 is the sheath 61 itself. Fig.12In the embodiment of the linear damper 6 specifically shown in FIG, when said first fixed portion 6a of the linear damper 6 is the end of the rod or rod 63 of the piston 62 remote from the piston 62 itself, said cylindrical portion may be a cylindrical enlargement of the same end of the rod or rod 63 of the piston 62 remote from the piston 62 itself. Advantageously (in order to minimize or prevent any sliding or movement of the first fixed portion 6a of the linear damper 6 relative to the control pawl 4 to which it is fixed), a ring is provided on the control pawl 4 for retaining the first fixed portion 6a of the linear damper 6.

[0073] Specific reference Figures 13 to 17 In one embodiment of the abutment element 90 (in Fig.14 , Fig.14A , Fig.15 , Fig.15A , Fig. 15B , Fig.16 , Fig. 16B ), the abutment element includes a first sheet portion 110c of the third side wall 11c cut and folded toward the interior of the housing 1.

[0074] exist Figures 1 to 11 In the embodiment shown, in which the linear damper 6 is stably associated with the inner wall of the housing 1 at a predetermined and defined position inside the housing 1 itself, the element for abutment and positioning comprises a first sheet portion 110d of the fourth side wall 11d, which protrudes from the fourth side wall 11d towards the interior of the housing 1, thereby providing support for the first fixing portion 6a of the linear damper 6 and defining the orientation of the extension-shortening line L of the linear damper 6 in space (see in particular Figure 2 , Figure 2A , Figure 3 , Figure 3A , Figure 4 , Figure 4A , Figure 6 , Fig. 6A , Figure 8 , Fig. 8A ). The orientation of the elongation-shortening line L of the linear damper 6 in space may be horizontal or inclined. In particular, in the latter case, the first sheet portion 110d of the fourth side wall 11d protrudes toward the inside of the ramp housing 1, provides support for the first fixing portion 6a of the linear damper 6, and defines a predetermined inclination of the elongation-shortening line L of the linear damper 6.

[0075] In a first embodiment of the abutment and positioning element (eg Figure 1B , Figure 2 , Figure 2A , Figure 3 , Figure 3A , Figure 4 , Figure 4A , Figure 5 , Figure 5A , Figure 5B , Figure 6 , Fig. 6A As shown), the first sheet portion 110d of the fourth side wall 11d has a free edge 111d, and a bent protrusion 112d protrudes from the free edge 111d, at least partially surrounding the first fixing portion 6a of the linear damper 6, and holding the first fixing portion 6a of the linear damper 6 against the third side wall 11c of the shell 1, and the second face portion 10b of the shell belongs to the third side wall 11c.

[0076] In a second embodiment of the abutment and positioning element (in Figure 7 , Fig. 7A , Figure 8 , Fig. 8A , Fig. 9 , Fig.10 , Fig.11 ), the element for abutting and positioning further comprises a first sheet portion 110c of the third side wall 11c, which is cut and folded toward the inside of the housing 1 on the opposite side of the first fixing portion 6a of the linear damper 6 relative to the first sheet portion 110d of the fourth side wall 11d, and which holds the first fixing portion 6a of the linear damper 6 against the first sheet portion 110d of the fourth side wall 11d (in this case, the first sheet portion 110d does not provide the bent protrusion 112d of the previous embodiment). Again as Figure 7 , Fig. 7A , Figure 8 , Fig. 8A , Fig. 9 , Fig.10 , Fig.11 As shown, the abutment and positioning element also includes a first sheet portion 110b of the second side wall 11b cut and folded toward the inside of the housing 1 to abut (particularly with its free edge 111b) the first fixing portion 6a of the linear damper 6 on the opposite side of the third side wall 11c of the housing 1 and to hold the first fixing portion 6a of the linear damper 6 against the third side wall 11c of the housing 1. Similarly, for Figure 7 , Fig. 7A , Figure 8 , Fig. 8A , Fig. 9 , Fig.10 , Fig.11In the embodiment shown, in addition, preferably, the linear damper 6 is placed in the housing 1 at a joint between the first side wall 11a of the housing 1 and the fourth side wall 11d of the housing 1, the linear damper 6 is perpendicular to the first side wall 11a of the housing 1 and the fourth side wall 11d of the housing 1, and the linear damper 6 connects the second side wall 11b and the third side wall 11c of the housing 1 together. In addition, in this case, the abutment and positioning element further includes a second sheet portion 111c of the third side wall 11c, which is cut and folded toward the inside of the housing 1 to form a protrusion of the first fixing portion 6a of the linear damper 6 on the opposite side of the fixing portion 6a of the linear damper 6 relative to the joint between the first side wall 11a of the housing 1 and the fourth side wall 11d of the housing 1, preferably abutting the first fixing portion 6a against the inner wall of the housing 1 at the joint.

[0077] Even in general, Figures 1 to 11 In the illustrated embodiment, in which the linear damper 6 is stably associated with the inner wall of the housing 1 at a predetermined and defined position inside the housing 1 itself, regardless of the method and conditions used to position the linear damper 6 in the housing (in particular, the locking of its first fixing portion 6a), the linear damper 6 can be placed at the junction of the first side wall 11a of the housing 1 and the fourth side wall 11d of the housing 1, the linear damper 6 is perpendicular to the first side wall 11a of the housing 1 and the fourth side wall 11d of the housing 1, and the linear damper 6 connects the second side wall 11b and the third side wall 11c of the housing 1 together.

[0078] Generally speaking, and preferably, the fourth side wall 11d is the side wall away from the latch pin 20. A position close to the latch pin can also be selected. In the exemplary figures and embodiments shown, the housing 1 includes:

[0079] - a second side wall 11 b and a third side wall 11 c forming the wide sides of the housing 1 (and including the face parts 10 a , 10 b of the housing 1 );

[0080] The first side wall 11a, the fourth side wall 11d, the fifth side wall 11e opposite the first side wall 11a, and the sixth side wall 11f opposite the fourth side wall 11d, which together contribute to the thickness of the housing 1 between the two face parts 10a, 10b.

[0081] As shown, when the fourth side wall 11d is away from the latch pin 20, the sixth side wall 11f approaches the latch pin and provides a through hole for the travel of the latch pin 20. The fourth side wall 11d and the sixth side wall 11f are connected to each other at their ends by the first side wall 11a and the fifth side wall 11e, respectively, to form a lateral boundary of the housing 1 around the two face parts 10a, 10b. On the sixth side wall 11f, at the front and facing the counter housing or strike plate 3, a covering element 12 of the sixth side wall 11f can be provided, which is also equipped with a corresponding through hole for the travel of the latch pin 20.

[0082] At the front part of the counter-housing or strike plate 3 facing the housing 1 , a corresponding covering element 31 may be provided, which covering element 31 is equipped with a corresponding through hole allowing the latching pin 20 to enter the seat 30 of the counter-housing or strike plate 3 .

[0083] The utility model achieves important advantages. Compared with the prior art, the space required for the functional components of the door is reduced, and at the same time, the number of components required for the movement of the handle actuator is reduced by integrating the components required for the movement of the handle actuator into the elements already placed inside the lock housing, rather than placing the components required for the movement of the handle actuator outside the housing.

[0084] The invention thus conceived is susceptible of numerous modifications and variations, all of which fall within the scope of the inventive concept that characterizes it.

Claims

1. A locking device, characterized in that: The locking device has a device for buffering the return of the handle to the rest state of the handle, and the locking device comprises: A housing (1) extending in an extension plane of the housing between two parallel face portions (10a, 10b) of the housing, the two parallel face portions (10a, 10b) being at a predetermined distance from each other and capable of being inserted into corresponding cutouts formed in a door leaf, the two face portions (10a, 10b) of the housing being parallel to the extension plane of the door leaf; a latch (2) provided with a latch pin (20) at one end and housed in the housing (1) and movable between a first retracted position in which the latch pin (20) is located in the housing (1) and a second partially withdrawn position in which the latch pin (20) is withdrawn from the housing (1); a counter-housing or strike plate (3) which can be inserted into a corresponding cut-out formed in the door frame or in an additional door leaf and which is provided with a seat (30) for the insertion of the latching pin (20) when the latching pin (20) is withdrawn from the housing (1); a control pawl (4), the control pawl being provided with a seat (40) for inserting a pin of a handle actuator and the control pawl being received in the housing (1) and rotating about a rotation axis (R1), the rotation axis (R1) being perpendicular to the two faces (10a, 10b) of the housing (1) and being a rotation axis shared by the control pawl (4) and the pin of the handle actuator when the handle actuator is installed; the control pawl (4) being rotatable relative to the housing (1) about the rotation axis (R1) between a first rest position of the handle actuator and a second activation position of the handle actuator, the path from the first rest position to the second activation position occurring according to the action of an elastic return device (5), the elastic return device (5) acting so as to cause the control pawl (4) to tend to be brought back to the first rest position; The control pawl (4) is operatively coupled to the latch (2) so that: at least under a predetermined condition of the locking device, travel of the control pawl (4) from the first rest position to the second activated position causes the latch pin (20) to retract into the housing (1); The locking device is characterized by a combination of the following: The movement of the latch (2) between the first retracted position and the second partially extracted position occurs in the extension plane of the housing (1) and along the central axis (S1) of the latch (2); The control pawl (4) is arranged adjacent to the latch (2) and between the central axis (S1) along which the latch (2) moves and the first side wall (11a) of the housing (1), the first side wall (11a) being placed parallel to the central axis (S1) and joining the second side wall (11b) and the third side wall (11c) of the housing (1) together, the second side wall (11b) of the housing (1) comprising a first face (10a) of two parallel face portions (10a, 10b) of the housing (1), and the third side wall (11c) of the housing (1) comprising a second face portion (10b) of two parallel face portions (10a, 10b) of the housing (1); The lock device comprises a linear damper (6), the linear damper (6) is placed in the housing (1) and comprises a first fixed portion (6a) and a second portion (6b), the second portion (6b) being able to linearly move relative to the first fixed portion (6a) between a position corresponding to the maximum length of the linear damper (6) and a position corresponding to the minimum length of the linear damper (6), and the damping effect of the linear damper (6) itself corresponds to the relative movement of the second portion (6b) being able to move relative to the first fixed portion (6a) in a first direction of the two directions between the position corresponding to the maximum length and the position corresponding to the minimum length; The linear damper (6): - the linear damper (6) is placed in the housing (1), the linear damper is also located in the space adjacent to the latch (2) and between the central axis (S1) along which the latch (2) moves and the first side wall (11a) of the housing (1), and the first fixing part (6a) is fixed at a predetermined position inside the housing (1) itself relative to the wall of the housing (1), and the rod-shaped protrusion (41) is formed as a single piece on the control pawl (4), and the control pawl (4) is moved from the control pawl (4) due to the action of the elastic return device (5). During the rotational movement from the second activation position to the first rest position, the rod-shaped protrusion (41) is directly connected to the second part (6b) of the linear damper (6), thereby determining the movement of the second part (6b) relative to the first fixed part (6a) in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length, and thus determining the damping effect, thereby having a cushioning effect on the travel of the control pawl (4) and the corresponding handle actuator from the second activation position to the first rest position; - Or the first fixed part (6a) of the linear damper (6) is fixed on the control pawl (4), and during the rotational movement of the control pawl (4) from the second activation position to the first static position due to the action of the elastic return device (5), the movable second part (6b) of the linear damper (6) is integrated with the locking device and the housing (1) and is directly connected to a predetermined part (9) inside the housing (1), thereby determining the movement of the second part (6b) relative to the first fixed part (6a) in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length, and thus determining the damping effect, thereby having a buffering effect on the travel of the control pawl (4) and the corresponding handle actuator from the second activation position to the first static position.

2. The lock device according to claim 1, characterized in that: The locking device includes a selective connector (7) from the control pawl (4) to the latch (2), and the selective connector (7) has a first structure and a second structure. In the first structure, the movement of the control pawl (4) from the first rest position to the second enabled position causes the latch pin (20) to retract into the housing (1), and in the second structure, the movement of the control pawl (4) from the first rest position to the second enabled position has no effect on the position of the latch pin (20).

3. The lock device according to claim 2, characterized in that: The movement of the selective coupler (7) from the first configuration to the second configuration and the movement of the selective coupler (7) from the second configuration to the first configuration are operated by a key selector.

4. The lock device according to any one of claims 1 to 3, characterized in that: The elastic return means (5) comprises a spring, in particular, the elastic return means (5) comprises a torsion spring generating a return torque about the rotation axis (R1) of the control pawl (4).

5. The lock device according to any one of claims 1 to 3, characterized in that: The relative movement of the second part (6b) being able to move relative to the first fixed part (6a) in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length of the linear damper (6) is the relative movement of the second part (6b) being able to move relative to the first fixed part (6a) from the corresponding position of the maximum length of the linear damper (6) itself toward the corresponding position of the minimum length.

6. The lock device according to any one of claims 1 to 3, characterized in that: The linear damper (6) is placed in the housing (1), and the linear damper is also located in a space adjacent to the latch (2) and between the central axis (S1) along which the latch (2) moves and the first side wall (11a) of the housing (1), and the first fixing portion (6a) is fixed at a predetermined position inside the housing (1) itself relative to the wall of the housing (1), and the rod-shaped protrusion (41) is formed as a one-piece on the control pawl (4), and the control pawl (4) is moved from the first side wall (11a) due to the action of the elastic return device (5). During the rotational movement from the second activation position to the first rest position, the rod-shaped protrusion (41) is directly connected to the second part (6b) of the linear damper (6), thereby determining the movement of the second part (6b) relative to the first fixed part (6a) in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length, and thus determining the damping effect, thereby having a cushioning effect on the travel of the control pawl (4) and the corresponding handle actuator from the second activation position to the first rest position; The linear damper (6) is stably associated with the inner wall of the housing (1) at a predetermined and defined position inside the housing (1) itself.

7. The lock device according to claim 6, characterized in that: The housing (1) comprises an abutment and positioning element for abutting and positioning the linear damper (6) to determine a stable association of the linear damper (6) with the inner wall of the housing (1).

8. The lock device according to claim 7, characterized in that: The abutment and positioning element is defined by a sheet portion of predetermined thickness obtained by cutting and / or folding and / or shaping a portion of a wall of the housing (1).

9. The lock device according to claim 8, characterized in that: The shell (1) comprises a fourth side wall (11d), the fourth side wall being perpendicular to the first side wall (11a) of the shell (1) and the fourth side wall also joining the second side wall (11b) and the third side wall (11c) of the shell (1) together; The abutting and positioning element comprises a first sheet portion (110d) of the fourth side wall (11d), the first sheet portion (110d) protruding from the fourth side wall (11d) toward the interior of the housing (1) to provide support for the first fixed portion (6a) of the linear damper (6) and thereby define the orientation of the elongation-shortening line (L) of the linear damper (6) in space, the first sheet portion (110d) of the fourth side wall (11d) having a free edge (111d), a bent protrusion (112d) protruding from the free edge (111d) to at least partially surround the first fixed portion (6a) of the linear damper (6) and hold the first fixed portion (6a) of the linear damper (6) against the third side wall (11c) of the housing (1), the second face portion (10b) of the housing belonging to the third side wall (11c).

10. The lock device according to claim 8, characterized in that: The shell (1) comprises a fourth side wall (11d), the fourth side wall being perpendicular to the first side wall (11a) of the shell (1) and the fourth side wall also joining the second side wall (11b) and the third side wall (11c) of the shell (1) together; The abutting and positioning element comprises a first sheet portion (110d) of the fourth side wall (11d), the first sheet portion (110d) of the fourth side wall (11d) protruding from the fourth side wall (11d) toward the interior of the housing (1), thereby providing support for the first fixing portion (6a) of the linear damper (6), and thereby defining the orientation of the extension-contraction line (L) of the linear damper (6) in space; The abutment and positioning element also includes a first sheet portion (110c) of the third side wall (11c), which is cut and folded toward the interior of the housing (1) on the opposite side of the first fixing portion (6a) of the linear damper (6) relative to the first sheet portion (110d) of the fourth side wall (11d), and the first sheet portion (110c) of the third side wall (11c) holds the first fixing portion (6a) of the linear damper (6) against the first sheet portion (110d) of the fourth side wall (11d).

11. The lock device according to claim 10, characterized in that: The abutment and positioning element also includes: The first sheet portion (110b) of the second side wall (11b) is cut and folded toward the inside of the housing (1) to abut against the first fixing portion (6a) of the linear damper (6) on the opposite side of the third side wall (11c) of the housing (1), and the first fixing portion (6a) of the linear damper (6) is held against the third side wall (11c) of the housing (1). In particular, the first sheet portion (110b) is cut and folded toward the inside of the housing (1) to abut against the first fixing portion (6a) of the linear damper (6) on the opposite side of the third side wall (11c) of the housing (1) through the free edge (111b) of the first sheet portion (110b) of the second side wall (11b).

12. The lock device according to claim 11, characterized in that: The linear damper (6) is placed in the housing (1) and is located at a joint between the first side wall (11a) of the housing (1) and the fourth side wall (11d) of the housing (1), the linear damper (6) is perpendicular to the first side wall (11a) of the housing (1) and the fourth side wall (11d) of the housing (1), and the linear damper (6) joins the second side wall (11b) and the third side wall (11c) of the housing (1) together; The abutment and positioning element also includes a second sheet portion (111c) of the third side wall (11c), which is cut and folded toward the inside of the shell (1) to form an abutment protrusion of the first fixing portion (6a) of the linear damper (6) on the opposite side of the first fixing portion (6a) of the linear damper (6) relative to the joint between the first side wall (11a) of the shell (1) and the fourth side wall (11d) of the shell (1).

13. The lock device according to claim 12, characterized in that: The first fixing portion (6a) of the linear damper (6) abuts against an inner wall of the housing (1) corresponding to the joint portion.

14. The lock device according to any one of claims 9 to 13, characterized in that: The first sheet portion (110d) of the fourth side wall (11d) protrudes from the fourth side wall (11d) toward the interior of the inclined housing (1), thereby providing support for the first fixing portion (6a) of the linear damper (6) and thereby defining a predetermined inclination angle of the extension-contraction line (L) of the linear damper (6).

15. The lock device according to any one of claims 1 to 3, characterized in that: During the rotational movement of the control pawl (4) from the second activation position to the first rest position due to the action of the elastic return device (5), the rod-shaped protrusion (41) is in direct contact with the second part (6b) of the linear damper (6), thereby determining the movement of the second part (6b) relative to the first fixed part (6a) in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length; The rod-shaped protrusion (41) of the control pawl (4) has a circular surface at the free end (42) of the rod-shaped protrusion (41), and the circular surface is close to at least a cylindrical or spherical shape to facilitate contact between the free end (42) and the end (60b) of the movable second part (6b) of the linear damper (6). At the position of the maximum length of the linear damper (6), the end (60b) of the movable second part (6b) of the linear damper (6) is away from the first fixed part (6a) of the linear damper (6).

16. The lock device according to any one of claims 1 to 3, characterized in that: The rod-shaped protrusion (41) of the control pawl (4) always remains directly coupled to the second portion (6b) of the linear damper (6) via the free end (42) of the rod-shaped protrusion (41).

17. The lock device according to any one of claims 1 to 3, characterized in that: The linear damper (6) is placed in the housing (1) and is located at the joint between the first side wall (11a) of the housing (1) and the fourth side wall (11d) of the housing (1). The linear damper (6) is perpendicular to the first side wall (11a) of the housing (1) and the fourth side wall (11d) of the housing (1), and the linear damper (6) also joins the second side wall (11b) and the third side wall (11c) of the housing (1) together.

18. The lock device according to claim 17, characterized in that: The fourth side wall (11d) is away from the latch pin (20).

19. The lock device according to any one of claims 1 to 3, characterized in that: The first fixed part (6a) of the linear damper (6) is fixed on the control pawl (4), and during the rotational movement of the control pawl (4) from the second activation position to the first static position due to the action of the elastic return device (5), the movable second part (6b) of the linear damper (6) is integrally formed with the locking device and the housing (1) and is directly connected to a predetermined part (9) inside the housing (1), thereby determining the movement of the movable second part (6b) relative to the first fixed part (6a) in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length, and thus determining the damping effect, thereby having a buffering effect on the travel of the control pawl (4) and the corresponding handle actuator from the second activation position to the first static position; During the rotational movement of the control pawl (4) from the second enabled position to the first rest position due to the action of the elastic return device (5), the movable second part (6b) of the linear damper (6) is directly in contact with a predetermined part (9) integrally formed with the housing (1) of the locking device and inside the housing (1), thereby determining the movement of the movable second part (6b) relative to the first fixed part (6a) in the first direction of the two directions between the corresponding position of the maximum length and the corresponding position of the minimum length.

20. The lock device according to claim 19, characterized in that During the rotational movement of the control pawl (4) from the second activation position to the first rest position due to the action of the elastic return device (5), the movable second part (6b) of the linear damper (6) always remains directly connected to a predetermined part (9) of the locking device that is integral with the housing (1) and inside the housing (1) through one end of the movable second part (6b) away from the first fixed part (6a) of the linear damper (6).

21. The lock device according to claim 19, characterized in that: The movable second part (6b) of the linear damper (6) has a circular surface at a free end away from the first fixed part (6a) of the linear damper (6), and the circular surface is close to at least a cylindrical or spherical shape to facilitate contact between the free end and the predetermined part (9) of the locking device and the housing (1) formed integrally and inside the housing (1).

22. The lock device according to claim 19, characterized in that: The first fixed portion (6a) of the linear damper (6) is accommodated in a seat (40) formed on one side of the control pawl (4).

23. The lock device according to claim 19, characterized in that: An annular member for holding the first fixing portion (6a) of the linear damper (6) is provided on the control pawl (4).

24. The lock device according to claim 19, characterized in that: The predetermined portion (9) of the locking device, formed integrally with the housing (1), comprises at least one abutment element (90) of the movable second portion (6b) of the linear damper (6).

25. The lock device according to claim 24, characterized in that The at least one abutment element (90) is defined by a sheet portion of predetermined thickness obtained by cutting and / or folding and / or shaping a portion of a wall of the housing (1).

26. The lock device according to claim 25, characterized in that The abutment element (90) further comprises a first sheet portion (110c) of the third side wall (11c), the first sheet portion of the third side wall (11c) being cut and folded toward the interior of the housing (1).

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