ES2995173T3 - Handle for a truck door - Google Patents

Abstract

The invention relates to a cremone handle (1) for a truck door comprising a base (5) intended to be fixed to the door and defining a base plane, a rotating arm (6) mounted in a movable manner fixed to a cremone bar to actuate it in rotation between a closed position in which it is folded against the base and an open position in which it is separated from it, a hook (21) mounted in a movable and rotatable manner on the base to switch between a retention position in which it retains the arm in the closed position and a position in which this arm is released, and a mechanism for locking and unlocking the handle in the closed position comprising a motor, a rotating cam and a system for transmitting the movement of the motor to the cam adapted to actuate the cam in rotation about a cam axis perpendicular to the base plane between a locking position in which it prevents the hook from tilting towards the release position and an unlocking position in which it allows the hook to tilt towards the release position. According to the invention, the motor is a rotary motor around a drive shaft and the transmission system is formed by a worm screw coupled to a drive shaft and teeth present on a cylindrical external surface of the cam and meshing with the worm screw. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Truck door handle

Technical field of the invention

The present invention relates generally to the field of leaf or door closures, in particular to handle systems.

More specifically, it refers to a latch handle for a truck door, specifically a refrigerator door.

The invention applies in particular to latch handles designed to be installed on an external face of a door, in particular, a truck door, in particular a refrigerator door. In this type of arrangement, the latch comprises a generally vertical bar rigidly connected to a rotating arm, this bar being, for example, welded or screwed to a first part of the rotating arm. The opening of the rotating arm thus causes the vertical bar to rotate, as well as the latches it carries, located, for example, at the top and bottom of the door equipped with such an arrangement, to allow its opening.

The invention also applies to dry body trucks and to handle systems for fixed or mobile installations, such as containers or "shelters".

State of the art

From EP 2921956 a latch handle for a truck door is known, which consists of:

- a box designed to be attached to said door, said box defining a box plane;

- a rotating arm movably mounted on said box and designed to be rigidly attached to a latch bar to rotate said latch bar between a closed position where said rotating arm is retracted against said box and an open position where said rotating arm is moved away from said box;

- a hook mounted so as to be rotatably movable on said housing for tilting between a retention position in which said hook retains said rotating arm in a closed position and a release position of said rotating arm; and

- a mechanism for locking and unlocking the handle in the closed position comprising a motor, a rotary cam and a system for transmitting the movement of said motor to said cam, said transmission system being adapted to drive said cam in rotation around a cam axis perpendicular to said box plane between a locking position in which said cam prevents said hook from tilting towards said release position and an unlocking position in which said cam allows said hook to tilt in said release position.

An example of a handle of this type is the "16UL-RC" model from the TORSEO 16 range manufactured and marketed by the company Po Mm IER.

A latch handle of the above type allows, in particular, the door to which it is attached to be opened with one hand and in one movement.

In EP 2921956, the motor (actuator 34) is a linear motor and the mechanism for transmitting the movement from the motor to the rotary cam, with several lever arms and a long straight rod linking the cam to the arms, is complex and relatively long. In addition, the actuator has a large volume compared to the rest of the handle (rotary arm and box).

These are the reasons why the locking and unlocking mechanism of the handle disclosed in EP 2921956 is located mainly on the outside of the rotating arm, except for the cam.

Indeed, as clearly shown in figure 2 of document EP 2921956, the locking and unlocking mechanism is enclosed in a housing, of which one part (reference 14) is arranged laterally next to the handle box and another part (reference 15) below it.

Thus, the motorised opening and closing solution proposed in EP 2921956 entails that the espagnolette handle has a very large overall size and is very different in size and appearance from a "classic" non-motorised handle (see for example the "16UL-R" and "16UL-X" type models of the same range), so that the range of handles is not uniform. Thus, changing such a handle into a conventional handle (or vice versa) may be complicated, for example, if the system for fixing the remote control handle to the truck door is different from that of a standard handle.

In addition, the prior art latch handle cannot be surface mounted on a truck door and must necessarily be recessed into the thickness of that door, typically between 45 and 100 millimetres. In the case of a refrigerated truck where the door comprises a thermal insulation panel, the other part of the casing located under the handle box therefore penetrates deeply into that panel and can then create a thermal bridge between the inner face of the truck door, which is exposed to the cold, and its outer face, which may be exposed to high temperatures, and this is all the more so because the box and the casing are often made of metal or steel, which are good thermal conductors.

Presentation of the invention

In order to remedy the aforementioned drawbacks of the state of the art, the present invention proposes a motorized latch handle that resembles a standard handle, which can be mounted on a surface-mounted or recessed truck door, and which limits the risks of thermal bridging after assembly.

More particularly, according to the invention there is proposed a latch handle as defined in claim 1, wherein said motor is a rotary motor around a motor shaft and said transmission system is formed by a worm screw (48) coupled to a shaft of said motor and teeth present on a cylindrical external surface of said cam and which mesh with said worm screw.

Thus, thanks to the combined use of a rotary motor and a "worm/gear" type transmission system, it is possible to integrate the locking and unlocking mechanism of the handle completely inside the rotating arm, so that the espagnolette handle according to the invention resembles, when viewed from the outside, any other "classical" handle that operates in the same way, while maintaining the homogeneity of the range of handles.

In fact, thanks to the gear-gear and worm gear system's reduction effect, it is possible to easily rotate the cam, even if a significant torque is required, with a relatively small motor that does not develop a very significant torque.

Furthermore, since the locking and unlocking mechanism can be integrated into the arm, the handle no longer has any extra thickness below the housing and the risk of hot spots after mounting on a refrigerated truck door is reduced. In addition, the handle of the invention can be surface-mounted or flush-mounted in the truck door.

Other non-limiting and advantageous features of the latch handle according to the invention, taken individually or according to all technically possible combinations, are the following:

- said motor, said transmission system and said cam are embedded in said rotating arm of the handle; - said rotating arm being movable in rotation about a handle axis, said motor axis of the motor being perpendicular to said handle axis;

- said handle comprises return means against the rotation of said cam driven by the worm screw from said locking position to said unlocking position;

- said motor, said transmission system and said cam are housed inside a casing, and said casing is assembled with removable fixing means on a fixing support rigidly attached to said rotating arm;

- said rotating arm comprises a first part mounted so as to be rotatably movable on said box about a handle axis and designed to be rigidly attached to said espagnolette bar and a second part forming an articulated lever for pivoting about a lever axis attached to said first part, said lever extending, on the one hand, in an arc and extending, on the other hand, in an actuating handle of said lever, and said locking and unlocking mechanism comprises a carriage mounted so as to slide along said arc of the lever and coupled to said cam so as to slide due to its rotation between said locking position and said unlocking position;

- said mechanism for locking and unlocking the handle in the closed position further comprises a blocking piece mounted so as to move in rotation on said box so as to rotate between a blocking position in which said blocking piece prevents said hook from tilting towards said release position, and an unlocking position in which said blocking piece allows said hook to tilt in said release position, and said carriage comprises unlocking means for said blocking piece which are arranged opposite said blocking piece when said cam is in the unlocked position, said unlocking means being configured to rotate said blocking piece in its unlocking position due to said lever being pivoted by a user pulling on said operating handle;

- said handle comprises a key lock, said key lock comprising a cylindrical cylinder and a latch mounted slidingly through said cylinder and coupled to said carriage to cause said carriage to slide when the cam is locked in the locked position;

- said cam is in the form of a quarter of a toothed wheel and comprises a pin having a pin head which, during rotation of said cam from said locked position to said unlocked position, abuts against a first stop of said carriage to push said carriage along said arc, and said latch comprises a curved end which abuts against a second stop of said carriage to pull said carriage along said arc.

Of course, the different features, variants and embodiments of the invention can be associated with each other in various combinations to the extent that they are not exclusive or incompatible with each other.

Detailed description of the invention

The following description with respect to the attached drawings, provided as non-limiting examples, will allow a clear understanding of what the invention consists of and how it can be carried out.

The invention is not limited to the preferred embodiment illustrated in the drawings. Accordingly, it is to be understood that, when the features mentioned in the claims are followed by a reference sign, these signs are included solely for the purpose of improving the intelligibility of the claims and do not in any way limit the scope of the claims.

In the attached drawings:

[Fig. 1] shows an overall perspective view of a handle according to a preferred embodiment of the invention, in the closed position.

[Fig. 2] is an overall perspective view of the handle in the open position.

[Fig. 3] shows a truck consisting of doors equipped with handles according to the invention.

[Fig. 4] is an overall perspective view of the handle in the closed position, when its lever has pivoted. [Fig. 5] is a perspective view showing the interior of the handle of Figure 4 when the lever of the handle is actuated with a carriage in the locked position.

[Fig. 6] is a view of a detail of Figure 5 showing the arrangement of the carriage activation means with respect to the blocking piece.

[Fig. 7] is a perspective view showing the interior of the handle of Figure 4 when the handle lever is actuated with a carriage in the unlocked position.

[Fig. 8] is a view of a detail of Figure 7 showing the arrangement of the carriage activation means with respect to the blocking piece.

[Fig. 9] shows a plate of the handle box of Figure 1 with the locking piece in the locked position and a hook in the retaining position.

[Fig. 10] shows a plate of the handle box of Figure 4 with the locking piece in the unlocked position and a hook in the retaining position.

[Fig. 11] shows a plate of the handle box of Figure 2 with the locking piece in the locked position and a hook in the released position.

[Fig. 12] is a bottom view of the rotating arm of the handle of Figure 1 showing the carriage in the locked position when the cam pin is retracted (handle lock).

[Fig. 13] is a bottom view of the rotating arm of the handle of Figure 1 showing the carriage in the unlocked position when the cam pin is deployed (handle unlock).

[Fig. 14] is a bottom view of the rotating arm of the handle of Figure 1 showing the carriage in the unlocked position when the key lock latch has slid through the cylinder (handle unlocking).

[Fig. 15] is an overall perspective view of a remote control device integrated into the handle of Figure 1 to make the carriage slide on its axis, the device in this case presenting a pin in the retracted position.

[Fig. 16] is a sectional view of the device in Figure 15, showing the mechanism that allows the movement of the pin.

[Fig. 17] is an overall perspective view of the remote control device of Figure 15 with a pin in the deployed position.

[Fig. 18] is a sectional view of the device in Figure 17, showing the mechanism that allows the movement of the pin.

[Fig. 19] is an exploded view of the device shown in Figures 15 and 17.

Identical or corresponding elements of different figures shall be identified, as far as possible, by the same reference signs and shall not be described each time.

In Figures 1 and 2, a latch handle 1 is shown according to a preferred embodiment of the invention, the handle 1 being respectively in a closed position (case of Figure 1) and in an open position (case of Figure 2).

This handle 1 is designed to equip a truck 2, such as the one shown in figure 3. This truck consists of several doors 3, in this case three: two rear doors and one side door. Each door 3 is provided, in this case, on its external face 4, with a handle 1 of the invention.

As clearly shown in Figures 1 and 2, the handle 1 consists of a box 5 and a rotating arm 6.

In this case, this box 5 is in the form of a "bucket" for the fitting of the handle 1 into the external face 4 of each door 3 of the truck 2. The box 5 comprises fixing holes 7 in a flange 8 situated on the periphery of the box 5. The box 5 is generally made of metallic material, for example, steel, and also comprises a bottom 9 in the form of a solid plate, but in this case leaving an opening 10 which allows the handle 1 to be opened from inside the truck 2 (in practice there is a cylindrical hole under one of the references 33, this hole being barely visible in figure 2).

The rotating arm 6 consists of a first part 11 which is partly mounted on the rotating movable box 5 around a handle axis A1.

This first part 11 is designed to be rigidly attached to a latch bar (not shown) to drive this latch bar into rotation when the rotating arm 6 is actuated by a user of the handle 1.

During this actuation, the rotating arm 6 rotates in rotation relative to the box 5 around the handle axis A1 between a closed position (case of figure 1) and an open position (case of figure 2).

In the closed position, the rotating arm 6 is retracted against the box 5, in this case, near the bottom 9. The handle 1 is then closed (whether it is latched or not, see below).

Conversely, in the open position, the rotating arm 6 moves away from the box 5, in this case from the bottom 9. The handle 1 is then open.

Without this being limiting, it should be noted that in the configuration presented in figure 2, the rotating arm 6 in the open position, in this case forms an angle of approximately 90° with the box 5 and its bottom 9.

As illustrated in Figures 1 and 4, the first part 11 of the rotating arm 6 presents a cylindrical barrel 12 of revolution around the handle axis A1, this cylindrical barrel 12 forming a hinge that articulates in rotation with the box 5 and, more specifically, with a side wall 13 of the box 5.

This cylindrical barrel 12 of the first end 11 is designed to receive the latch bar of an opening and closing system (not visible in figure 3) of a door 3 of the truck 2. This bar is generally vertical and, in the case of a recessed handle 1, located inside the truck 2, on the side of the internal face of the door 3.

The bar is rigidly attached to the rotating arm 6, for example, by means of pins 14 inserted through the cylindrical barrel 12 (see figure 1) into the vertical bar of the espagnolette.

Alternatively, the bar can also be welded, screwed or riveted to the first part of the rotating arm.

In practice, when the rotating arm 6 moves to the open position (as in Figure 2), it rotates the vertical bar, as well as the latches it carries, located, for example, at the top and bottom of the door 3 equipped with the handle 1, in order to open this door 3.

It can be seen in Figures 1 and 2 that the rotating arm 6 of the handle 1 also has a second part 15 which forms a lever that the user of the handle 1 can grasp with his hand to propel the first part 11 into rotation by applying a mechanical torque to the handle axis A1 and rotate the rotating arm 6.

This lever 15 is pivotally mounted relative to the first part 11 of the rotating arm 6 about a lever axis A2 (see Figure 2), substantially parallel to the handle axis A1. This can be seen in Figure 4, where a cut 17 (the area surrounded by a dotted line) appears between the first part 11 of the rotating arm 6 and the lever 15.

It will now be seen that the slight pivoting of the lever 15 along its lever axis A2 makes it possible to pre-unlock the rotating arm 6 (if the handle 1 is not locked) before fully opening the handle 1 (see figure 2).

As clearly shown in Figures 12 to 14, the lever 15 is fixed to a rectilinear rod 22 extending longitudinally along the lever axis A2. This rectilinear rod 22 is articulated so as to pivot about its two ends with the first part 11 of the rotating arm 6 and, more specifically, at the level of two wings 23, 24 spaced from the first part 11 and extending from opposite ends of the cylindrical barrel 12. The two wings 23, 24 and the cylindrical barrel thus form a U-shaped arrangement.

As a variant, the straight rod can be rigidly connected to the two wings of the first part, the lever then being articulated to pivot around this straight rod.

As shown in Figures 5 to 8, the lever 15 of the rotating arm 6 extends, on the one hand, from the lever axis A2 towards the handle axis A1, that is, from the straight rod 22 towards the cylindrical barrel 12 (not visible in the figures), in an arc 25.

This arc 25 has in this case a rectilinear portion 26 (see figures 6 and 8) which is parallel to the axis of the lever A2. It also has two curved branches 27, 28 which join the articulation of the lever 15 at the level of the ends of the straight bar 22 with the rectilinear portion 26 of the arc 15.

Furthermore, the lever 15 extends, in the opposite direction from the lever axis A2, i.e. from the straight rod 22 axially outwards, into an actuating handle 16 of the lever 15, which has a shape adapted to be manually gripped by the user of the handle 1.

When the rotating arm is in the closed position (case in figure 1), this handle 16 is designed so that the user pulls it in order, first, to pivot the lever 15 about its lever axis A2 (case in figure 4 with cut 17) and to allow, if the handle 1 is unlocked, to release (i.e. to unlock) the rotating arm 6. The kinematics of this movement and its mechanism will be explained in more detail below. If, at a second moment, the user continues to exert a pull on the handle 16, then the rotating arm 6 moves in rotation about the axis of the handle 1, which then allows the handle 1 to be opened. This movement will also be described in more detail below.

As illustrated in Figures 1 and 4, the rotating arm 6 also consists of two protective covers 18, 19.

The first protective cover 18 conceals, on the one hand, a device for locking and unlocking the handle 1 and a key lock, which will be described later in the description with reference to Figures 5 to 8 and 12 to 14 and, on the other hand, a padlock locking arrangement, well known in the field.

As for the second cover 19, it hides an arrangement of parts 20, 21 in the closed position of the handle 1, which will also be described later in the description with reference to figures 5 to 14.

These protective covers (18, 19) not only provide a pleasing aesthetic appearance, but also prevent water or dust from penetrating into the mechanical or electronic elements they protect. Protective cover 18 is optional.

The handle 1 also comprises a hook 21 (see Figure 2, for example) which is adapted, in the closed position, to lock or unlock the rotation of the first part 11 of the rotating arm 6 around the handle axis A1.

This hook 21 is mounted so that it can be rotated in the box 5 about a hook axis A3 (see figure 2). This hook axis A3 is substantially parallel to the plane of the bottom 9 of the box 5 and parallel to the handle axis A1 and the lever axis A2.

As shown in Figures 2 and 9 to 11, the hook 21 and its hook axis A3 are in fact mounted in this case on a plate 30 with a substantially flat bottom, for example made of sheet metal and, more specifically, at the level of small walls 31 (in the figures where they are referenced, only one of the walls is visible) which rise perpendicularly from the plane of the plate 30. This plate 30 is designed to be fixed to the bottom 9 of the box 5, for example by welding or screwing.

The hook axis A3 is therefore articulated in this case with the box 5 at the level of these walls 31 of the plate 30.

Thus, thanks to its rotational connection with the box 5 (through the walls 31 and the plate 30), the hook 21 can swing between two positions: a retention position, illustrated in Figures 5 to 10, and a release position, illustrated in Figure 2 with the handle 1 open and in Figure 11.

In its retention position, the hook 21 retains the rotating arm 6 of the handle 1 in the closed position. Conversely, in its release position, the hook 21 is adapted to stop retaining the rotating arm 6 and thus release it to eventually allow its rotation (by pulling the handle 16) and to move to the open position. This mechanism will be described in more detail below with reference to Figures 5, 7 and 9 to 11.

In the exemplary embodiment of the hook 21 illustrated in these figures, first of all, it can be seen that the hook 21 is in this case a substantially cylindrical piece of complex section. It should be noted, however, that the hook 21 does not rotate around the hook axis A3.

It should also be noted that the hook 21 in this case comprises a cylindrical slot 29 having a substantially "C"-shaped section, the opening of the "C" being directed outwards, i.e. in a direction away from the handle axis A1. This slot 29 in this case extends rectilinearly along an axis parallel to the hook axis A3.

The slot 29 is shaped so as to, in the closed position (see Figures 5 to 8), receive or "bite" a central portion of the rod 22 fixed at its two ends to the wings 23, 24 of the first part 11 of the rotating arm 6. Therefore, the size of the slot 29 is preferably slightly larger than the size of the rod 22 of the rotating arm 6.

Thus, when the hook 21 is in its retaining position (case of Figures 5 and 7) and its tilting is prevented (it will be seen how later in the description) to its release position (case of Figures 2 and 11), the slot 29 has an orientation (direction of the opening of the "C" of the slot section) which is substantially parallel to the bottom 9 of the box 5 and which prevents the straight rod 22 from coming out of the slot 29. Since the straight rod 22 is connected to the first part 11 of the rotating arm 6, this first part 11 is locked in rotation, even if the user pulls the operating handle 16 of the lever 15 to move the rotating arm 6 away from the box 5 (i.e. in a direction substantially perpendicular to the bottom 9 of the box 5). In the closed position, the rotating arm 6 is therefore retained by the hook 21 when the latter is in its retaining position.

However, when the hook 21 has tilted (see the rest of the description) and is in its release position (case of figures 2 and 11), the slot 29 has rotated and is now oriented in a direction away from the box 5. Also, pulling the handle 16 entails, at first, the exit of the rod 22 from the slot 29, then, at a second moment, the moving away of the rotating arm 6 from the box 5, which then allows the handle to move into the open position.

According to what has just been described, it is understood that the position of the hook 21 determines whether the handle 1 can move to the open position (hook 21 in the release position) or whether it is condemned to remain in the closed position (hook 21 in the retention position).

Thus, the handle 1 also comprises a locking and unlocking mechanism which, in the closed position, will act on the hook 21 to prevent (handle 1 locked) or allow (handle 1 unlocked) the hook 21 to swing from its retaining position to its releasing position (see above).

This locking and unlocking mechanism comprises a locking piece 20 and a remote-controlled motorized device (see in particular Figures 15 to 19) for activating or deactivating the locking piece (see explanation below).

As shown in Figures 2 and 5 to 11, this blocking piece 20 is mounted so that it can rotate on the box 5, around a blocking axis A4 which is parallel to the hook axis A3 and therefore also to the plane of the bottom 9 of the box 5.

In Figures 9 to 11, it should be noted that, like the hook 21, the blocking piece 20 is mounted, more specifically, in pivot connection with the plate 30 fixed to the bottom 9 of the box 5, at the level of the walls 31 to which the hook axis A3 is also articulated.

Thanks to its mobility around its locking axis A4, the locking piece 20 can be driven in rotation (it will be seen how later) between two extreme positions, namely a locking position (see, for example, figures 5, 6 and 9) and an unlocking position (see, for example, figures 7, 8 and 10).

Advantageously, it is provided that the locking part 20 is mounted on the locking axis A4 with a torsion spring 32 which is adapted to return the locking part 20 to its locking position with respect to the box 5. The locking position is therefore the rest position (or default position) of the locking part 20, independently of the position of the hook 21 (see explanation below).

As illustrated in particular in Figures 9 to 11, the locking part 20 of the locking and unlocking mechanism in this case comprises two tabs 33 which are eccentric with respect to the locking axis<a>4 and which have flat surfaces 34.

It will be seen later in the description that it is possible to move the blocking piece 20 from its blocking position to its unlocking position by exerting pressure (directed downwards in the direction of the figures) on these flat surfaces 34, that is, by pressing on the tips of the tabs 33.

Alternatively, the locking piece could have a single tab or more than two tabs with flat surfaces.

In the locked position (case of figure 9), the flat surfaces 34 are substantially parallel to the box 5 and, more specifically, to the bottom 9 or to the plate 30 on which the locking piece 20 is mounted.

Conversely, in the unlocked position (case of figure 10), when the locking piece 20 has pivoted on its locking axis A4 (resting on the tabs 33), the flat surfaces 34 are inclined, the tips of the tabs 33 then pointing towards the plate 30 of the box 5.

Next, the mechanical interaction between the locking piece 20 and the hook 21 will be described with reference to Figures 9 to 11.

In general, the blocking piece 20 is configured so as to, in its blocking position, prevent the hook 21 from tilting from its retention position and, in its unlocked position, allow the hook 21 to tilt to its release position.

In the exemplary embodiment shown in Figures 9 to 11, it should be noted that the blocking piece 20 and the hook 21 have, on each side (only one side is visible in the figures) close to the walls 31, cross sections (i.e. perpendicular to the axes A3 and A4) with respective profiles 35, 36 having particular and "complementary" shapes, in the sense that these profiles 35, 36 are shaped to cooperate together during the movement of the blocking piece 20 and the hook 21.

Also, the spacing between the hook axis A3 and the locking axis A4 is selected so that the profile 35 of the locking piece 20 and the profile 36 of the hook 21 can be in contact during movement.

With these profile shapes 35, 36, it is understood that when the locking piece 20 is in its locking position (case of figure 9), the profile 35 of the locking piece 20 forms a stop for the profile 36 of the hook 21, so that the latter is locked in rotation in its retention position. Rotation of the first part 11 of the rotating arm 6 is therefore impossible (rod 22 of the rotating arm 6 caught in the slot 29 of the hook 21, see above).

It is also understood that the blocking piece 20, for its part, can rotate, instead, around its locking axis A4 (for example, resting on its tabs 34), its profile 35 touching the profile 36 of the hook 21, without making it rotate around its hook axis A3.

This leads to the situation shown in Figure 10, with the locking piece 20 in the unlocked position and the hook 21 in the retaining position. In this situation, the profile 35 of the locking piece 20 no longer forms a stop for the profile 36 of the hook 21, so that the latter is no longer locked in rotation and can then swing into the released position if the user exerts a pull on the handle 16 of the lever 15 (see explanation above).

Furthermore, thanks to the torsion spring 32 mounted on the locking axis A4, the locking piece 20 automatically returns to its locking position, thus maintaining, thanks to the profile 36 of the hook 21, the latter in its release position.

This leads to the situation shown in Figure 11, with the locking piece 20 in the locked position and the hook 21 in the release position. In this situation, if the user continues to pull the handle 16, the rod 22 (not visible in Figure 11) will come out of the slot 29 and the rotating arm 6 can be released by the hook 21 and move into the open position, as illustrated in Figure 2.

From the situation shown in Figure 2, when the user wants to close the door 3 of the truck 2 on which the handle 1 is mounted, he rotates the rotating arm 6 by pulling the handle 16 of the lever 15 to bring the rotating arm 6 closer and retract it against the box 5. The retraction of the rotating arm 6 is facilitated by the return tension exerted by a spring 38 fixed, on the one hand, to the box 5 and, on the other hand, to the first part 11 of the rotating arm 6. The straight rod 22 of the rotating arm 6 will then come to rest against a ramp 37 of the hook 21. All that remains is for the user to do now is to press the handle 16 (in the direction of the box 5) so that the straight rod 22 in turn presses against the ramp 37 and so that the hook 21 swings into the retention position, the rod then sliding rectilinear 22 on ramp 37 and lodging in slot 29. Handle 1 is then in closed position (case of figure 1) and rotating arm 6 is retained by hook 21 near box 5 and can no longer be released or rotated, unless the locking piece 20 is acted upon (see above).

It will now be explained how the locking and unlocking mechanism of the handle 1 allows the locking part 20 to be moved from its locked position to its unlocked position, in particular by means of the remote control motorised device 39 shown only in figures 15 to 19. It will be seen later in the description how this motorised device 39 makes it possible to interact with the other parts of the handle 1, in particular the locking part 20, to allow the handle 1 to be locked or unlocked.

As illustrated in Figures 15 and 17, the motorized device 39 comprises, viewed from the outside, a casing (40, from which a pair of electric wires 41 (conductors and sheaths) emerge. These electric wires 41 are designed to be connected by their ends 41A to an external source of electric current (not shown) to supply current to the different components of the motorized device 39 (see below). The electric power supply is preferably direct current and low voltage, for example, from an electric line taken from the battery of the truck 2.

As shown in the exploded view of Figure 19, this casing 40 is formed by a substantially parallelepiped, hollow cover 43 and by a base 42 in the form of a substantially flat plate having contours with a shape corresponding to the cover 43. The base 42 is assembled and fixed to the cover 43 by means of assembly screws 44, 45 (the screw 45 has a particular function which will be described in more detail later) which are placed in threaded barrels (not visible in the figure) formed inside the cover 43. The base 42 and the cover 43 can be made of a hard plastic material, for example by moulding. It should also be noted in Figure 19 that the casing 40 also has an opening 46 made at the level of the cover 43, the utility of which will become apparent later.

Advantageously, said casing 40 is assembled with removable fixing means on a fixing support 82 (figures 6 and 8) rigidly attached to the rotating arm 6 and, more specifically, in this case on its first part 11.

For this purpose, the casing 40 comprises, at the level of its cover 43, a projection 83 (see Figures 15 to 19) with two cylindrical wells 85 designed to receive two assembly screws 84 which are screwed into hexagonal assembly nuts 86 held and locked in position in hexagonal cavities 87 formed in a part of the fixing support 82 covering the projection 83 of the casing 40.

This assembly system of the casing 40 of the motorised device 39 has the advantage of allowing the installation of the handle 1 on the latch bar without the risk of affecting the motorised device 39 and also of allowing its replacement if necessary, for example, if the motorised device breaks down.

As Figure 19 also shows, the motorized device 39 consists of two sets of components that are "aligned" along two axes of rotation A5,<a>6 perpendicular to each other.

The first assembly mainly comprises a rotary motor 47 and a worm gear 48 which are coaxial with the motor axis A5.

This motor 47 is of the "micromotor" type, for its integration into the rotating arm 6, it has very small dimensions, in this case with a diameter of approximately 13 millimetres and a length of approximately 57 millimetres. Due to this very small size, the torque developed by the motor 47 is limited.

The motor 47 is electrically supplied by the pair of electrical wires 41, which are connected to the electrical contacts 50 of the motor 47. Thus supplied, the motor 47 drives a drive shaft 51 in rotation about the drive shaft A5.

It should also be noted that the motor axis A5 is advantageously located in a plane parallel to the plane of the first part 11 of the rotating arm 6 defined, for example, by the handle axis A1 and the two wings 23, 24 of the first part 11. The interest of this orientation will be seen later.

The shaft 51 is adapted to be plugged into a cylindrical hole 52 (see Figures 16 and 18) drilled coaxially in the worm screw 48, from a first end of the worm screw 48. The depth of this cylindrical hole 52 is preferably slightly greater than the length of the rotating shaft 51 of the motor 47.

The shaft 51 also has a flat portion 53 over its entire axial length (see Figure 19) in order to be connected to the worm screw 48 by means of the clamping screw 54 which passes axially through the worm screw 48 to rest on this flat portion 53.

Thus arranged, the motor 47 of the motorized device 39 is coupled to the worm screw 48, so that the mechanical torque of the motor 47 (applied to the motor shaft A5) is integrally transferred to the worm screw 48. In other words, when supplied with current, the motor 47 drives the worm screw 48 into rotation, which then rotates around the motor shaft A5.

In order to correctly reference the motor shaft A5 with respect to the housing 40 of the motorized device, a washer 55 and a ball bearing 56 coaxial with the motor shaft A5 are also provided (see figures 16, 18 and 19). The washer 55 is inserted into the shaft 51 between the motor 47 and the first end of the worm 48 (cylindrical hole 52 side), while the ball bearing 56 is positioned on the other side, so as to surround the second end of the worm 48, which is in pivotal linkage with the ball bearing 56. When the housing 40 is closed, the base 42 which is screwed to the cover 43, the washer 55 and the ball bearing 56 are held in position by elements 57, 58 of the base 42 and by corresponding elements (of substantially identical shape) present inside the cover 43 (not visible in the figures).

The second set of components of the motorized device 39 comprises in this case a cam 49, a nut 59 and the screw 45 which are coaxial with the cam axis A6 (see figure 19).

This cam 49, which is housed in the casing 40, in this case, has substantially the shape of a quarter of a cylinder with a central bored barrel 60 which is cylindrical in revolution and precisely defines the cam axis A6. When the casing 40 is closed, this central barrel 60 receives, on one side (in this case, from above in the case of figure 19), a cylindrical part 61 of the nut 59 which is threaded internally, and, on the other side, the threaded part 62 of the screw 45 which will be screwed inside the cylindrical part 61 of the nut 59. The screwing of the screw 45 into this cylindrical part 61 is possible because the nut 59 has a hexagonal head 63 which, when the casing 40 is closed, is locked in rotation by being received in a corresponding hexagonal hole 64 formed in the cover 43 of the casing 40. Thus, the screw 45 not only makes it possible to assemble the base 42 with the cover 43, but also to mount the cam 49 in rotation following the cam axis A6 around the cylindrical part 61 of the nut 59.

As shown in Figure 19, but also in the sectional views of Figures 16 and 18, the cam 49 of the motorized device 39 is formed by a curved pin 65 which extends the main cylindrical part of the cam 49. It is also seen that this pin 65 comprises a pin head 66 at its end.

As clearly shown in Figure 17, this pin 65 of the cam 49 is adapted to project through the opening 46 formed in the cover 43 of the housing 40 (closed by the base 42 at its lower part in the figure).

With reference to Figures 16 and 18, it will now be described how the cam 49 can be driven in rotation about the cam axis A6 by means of the motor 47 which rotates about the motor axis A5 which, as recalled, is perpendicular to the cam axis A6.

Specifically, it can be seen that the cam 49 has, on a cylindrical external face 67 (see figure 19) of its main part in the form of a quarter wheel, teeth 68 which mesh with a thread 69 of the worm screw 48.

Thus, this arrangement of the teeth 68 and the thread 69 forms a gear which makes it possible, when the teeth 68 slide on the thread 69, to transform the rotational movement of the shaft 51 of the motor 47 around the motor axis A5 into another rotational movement of the cam 49 around the cam axis A6 perpendicular to the motor axis A5.

The rotation of the cam 49 around its cam axis A6 then makes it possible to deploy or retract the pin 65, depending on the direction of rotation of the worm screw 48.

In a retracted position (case of figures 15 and 16), the pin 65 is almost completely housed inside the housing 40 of the motorized device 39 with its head 66 closing the opening 46 formed in the cover 43.

Next, when the motor 47 drives the worm 48 in a first direction of rotation about the motor shaft A5, this rotates the cam 49 (in the figures, counterclockwise) about its cam shaft A6 to cause the pin 65 to exit the housing 40.

This leads to the configuration illustrated in Figures 17 and 18, where the pin 65 is in its deployed position. In this deployed position, the pin 65 has almost completely protruded to the outside of the housing 40.

If the motor 47 is ordered to rotate in a second direction of rotation, opposite to the first direction of rotation, around the motor axis A5, then the cam 49 also rotates in the opposite direction (in the figures, clockwise) to retract the pin 65 and bring it into the interior of the housing 40. The initial configuration illustrated in Figures 15 and 16 is then restored.

Quite obviously, it should be noted that the pin 65 can move continuously between its retracted position and its deployed position.

It should also be noted that, due to the curvature of the pin 65 and the amplitude of the rotation of the cam 49 between the retracted position and the deployed position of the pin 65, the movement of the head 66 of the pin can be virtually assimilated to a translational movement (for this purpose the trajectory of a point of the head 66 can be traced during the rotation of the cam 49).

Finally, it is important to underline that the use of a complex mechanical system of the "worm wheel" type in the motorised device 39 allows not only to precisely adjust the torque and the reduction ratio between the drive shaft 51 and the cam 49, but also to control the output speed and, therefore, the impulse given to the pin 65 which is deployed outside the casing 40.

Additionally, such a system allows this to be achieved in a relatively restricted space, while the motorized device 39 of the handle 1 is compact, and this is even more so because there are rotary motors such as the motor 47 in this case described with reference to figures 15 to 19 in the form of "micromotors" that have a reduced size, at a modest cost, as well.

Thus, in the invention, the motorized device 39 can be completely integrated inside the rotating arm 6, in this case in its first part 11, under the volume of a wing 23.

In the following, it will be described in more detail, with reference to Figures 2, 5 to 8 and 12 to 14, how this motorized device 39 is controlled in the locking and unlocking mechanism to prevent or allow the opening of the rotating arm 6 of the handle 1.

As illustrated in Figures 2 and 12 to 14 (each of which shows a view of the "rear" face of the rotary arm 6), the locking and unlocking mechanism also comprises a movable carriage 70 which is movably mounted to slide on the arc 25 of the lever 15.

Consequently, in the closed position, when the user pulls the operating handle 16, pivoting the lever 15 around its lever axis A2, the arch 25 "lowers" and approaches the bottom 9 of the box 5 and then drives the mobile carriage 70 in its movement, which is also lowered.

The figures also show that, in the preferred embodiment, the mobile carriage 70 slides along a guide rail 71 housed inside the rectilinear part 26 of the arch 25, between its two curved portions 27, 28.

In this case, this guide rail 71 is rectilinear with a circular cross section, but it could, as a variant, be curvilinear or with a non-circular cross section. Advantageously, it is made of a rigid material, for example, metal or steel, preferably stainless steel.

According to the invention, the motorized device 39 is configured to make the mobile carriage 70 slide along the arc 25 between two extreme positions on the guide rail 71: a locking position (case of Figures 5, 6 and 12) and an unlocking position (case of Figures 7, 8, 13 and 14). It will be seen later in the description, in particular, with reference to Figures 5 to 8, how the mobile carriage 70 in these two positions makes it possible to lock or unlock the handle 1.

Advantageously, in order to effect sliding, the mobile carriage 70 comprises (see Figures 12 to 14) a first stop 72. This first stop 72 has a substantially flat support surface, perpendicular to the direction of the guide rail 71 and facing the outside of the mobile carriage 70.

Additionally, the housing 40 of the motorized device 39 is arranged inside the rotating arm 6 such that its opening 46 is substantially opposite this first stop 72 of the mobile carriage 70, when the mobile carriage is in the locked position (see, for example, Figure 12).

Thus arranged, the head of the pin 66 is, when the pin 65 of the cam 49 is in the retracted position (see above), facing the first stop 72 of the movable carriage 70 and, more specifically, its support surface.

Preferably, in the retracted position, the pin head 66 is even in contact with the first stop 72, but without necessarily exerting a force on its bearing surface in this case.

As a variant, the arrangement of the casing and the mobile carriage inside the rotating arm could be such that, in the retracted position of the pin and in the locked position of the mobile carriage, there is a space between the head of the pin and the support surface of the first stop.

The kinematics of the mobile carriage 70 on the guide rail 71 will now be described, starting from the configuration shown in Figure 12 (bottom view of the rotating arm) where, on the one hand, the motorized device 39 is such that the pin 65 of the cam 49 is in the retracted position, with only the pin head 66 protruding from the opening 46 of the casing 40, and, on the other hand, the mobile carriage 70 is in the locked position, with the pin head 66 resting on the first stop 72 of the mobile carriage 70.

From this configuration, when an unlocking command is sent to the motorized device 39, the motor 47 will be set in rotation around the motor axis A5 and will rotate, through the worm screw 48 (see explanation above), the cam 49 around its cam axis A6 so that the pin 65 will be deployed outside the housing 40 (see figure 18).

During the movement of the pin 65 towards its deployed position, the pin head 46 resting on the first stop 72 will "push" the mobile carriage 70 along the guide rail 71 to bring it into its unlocked position.

We then arrive at the configuration shown in Figure 13 where, on the one hand, the motorized device 39 is such that the pin 65 of the cam 49 is in the deployed position, almost completely protruding from the casing 40, and, on the other hand, the mobile carriage 70 is in the unlocked position, the head of the pin 66 also being supported on the first stop 72 of the mobile carriage 70.

The "pushing" of the movable carriage 70 by the pin 65 of the cam 49 is possible due to the fact that the movement of the pin head 66 can be likened (see explanation above) to a translation substantially parallel to the axis of the guide rail 71 and that the support surface of the first stop 72 of the movable carriage 70 is perpendicular to the axis of the guide rail 71.

Advantageously, the pin head 66 has a curved profile which facilitates the support point to slide between the pin head 66 and the support surface of the first stop 72 and thus prevents jolts during this thrust.

In the preferred embodiment presented here, where the movable carriage 70 is pushed by the pin 65 of the motorized device 39 from its locked position to its unlocked position, a compression spring 73 is also provided against which the movable carriage 70 moves.

This compression spring 73 is in this case wound around the guide rail 71 of the arch 25, one of its ends abutting against a stop element of the arch 25 (not visible in the figures) and the other of its ends abutting against a post 74 (see, in particular, figure 2) substantially in the form of a quarter of a disk centred on the axis of the guide rail 71.

Thus, the compression spring 73 allows the movable carriage 70 to return to its locked position when the pin 65 returns to its retracted position, following the movement of the cam 49 actuated by the motor 47 (see explanation above).

Next, with reference to Figures 6 and 8, it will be described how the mobile carriage 70 allows, depending on its position along the guide rail 71, to lock or unlock the handle 1.

In general, in the invention, the mobile carriage 70 is arranged on the rotating arm 6 so that, in its unlocked position (case of figure 8), the blocking piece 20 is activated to make it move to its unlocked position, due to the pivoting of the lever 15 by the user's traction on the handle 16 and the lowering (approach of the box 5, see above) of the arch 25 that drags the mobile carriage 70 in its movement.

On the contrary, in its locked position (case of figure 6), the mobile carriage 70 is positioned on the guide rail 71 to move out of the way, so that the actuation of the lever 15 has no effect on the locking piece 20, which remains in its locked position.

In other words, the mobile carriage 70 comprises activation means 75 which, in the locked position, are displaced with respect to the blocking part 20, so that these activation means 75 are inoperative on the blocking part 20, and which, in the unlocked position, are arranged opposite the blocking part 20.

In the preferred embodiment presented here, the activation means are formed (see Figures 2, 6 and 8) by two push buttons 75, flat and substantially rectangular, which extend parallel to the guide rail 71 and perpendicular to the uprights 74 present on the mobile carriage 70.

As illustrated in Figure 8, the push buttons 75 are configured to, in the unlocked position of the mobile carriage 70, press the flat surfaces 34 of the two tabs 33 of the blocking piece 20 to rotate it around its locking axis A4 towards its unlocking position and thus allow the hook 21 to swing into the release position (see explanation above).

In Figure 6, on the contrary, it can be seen that in the locked position of the movable carriage 70, the push buttons 75 move out of the way and are no longer located above the tabs 33 of the blocking piece 20, so that the lowering of the arc 25 of the lever 15 cannot exert any action on the blocking piece which does not move.

Advantageously, the locking and unlocking mechanism of the handle 1 also comprises a key lock 76 which can be locked or unlocked by the user by means of a key (not shown).

The use of a key lock 76 in addition to the motorized device ensures that the handle 1 can be locked or unlocked by the user, even in the event of malfunction of the motorized device 39, for example due to a breakdown of the motor 47, a power supply failure or a seized gear between the worm screw 48 and the cam 49.

As clearly shown in Figures 6 and 8, this key lock 76 firstly comprises a cylindrical cylinder 77 into which the lock key is inserted and turned (through the key hole 78) to lock or unlock the key lock 76.

The key lock 76 also comprises in this case a latch 79 of oblong and substantially parallelepiped shape (see also Figures 12 to 14), which is movable to slide through the cylinder 77 in a direction parallel to the guide rail 71 due to the rotation of the lock key in the cylinder 77. In the locked position, the latch 79 occupies a central position with respect to the axis of the cylinder 77 (see, for example, Figure 12).

This sliding latch 79 has a curved end 80 (see Figures 6 and 8), substantially at a right angle, towards the entrance of the cylinder 77 and the lock hole 78.

The shapes and dimensions of the latch 79 and the movable carriage 70, as well as the relative arrangement of the key lock 76 and the movable carriage 70 on the rotating arm 6 are determined such that, in the locked position (see Figure 12), the curved end 80 of the latch 79 is, at least in part, facing a second stop 81 of the movable carriage 70 and, more specifically, a support surface of this second stop 81 which is substantially flat, perpendicular to the axis of the guide rail 71 and oriented towards the "inside" of the movable carriage 70.

Starting from the locked configuration of Figure 12 and assuming that the motorized device 39 is faulty (pin 65 not being able to be deployed), if the user unlocks the key lock 76 by turning the key in the cylinder 77, the curved end 80 of the latch 79 will push the second stop 81 of the movable carriage 70 (resting on its support surface) so that the latch 79 will slide through the cylinder 77 parallel to the axis of the guide rail 71 (from bottom to top in the case of Figures 12 and 14) until the movable carriage 70 is brought to its unlocked position. The unlocked configuration shown in Figure 14 is then reached, with the push buttons 75 opposite the tabs 33 of the blocking piece 20 (see Figure 8).

It should also be noted that it is important to carefully determine, in particular, depending on the geometry and arrangement of the blocking piece 20 in the box 5, the distance between the first stop 72 and the second stop 81 of the movable carriage 70, the position of the push buttons 75 and the travel of the retractable pin 65 or the sliding latch 79.

Additionally, when the handle 1 includes at the same time a motorized device 39 in combination with a key lock 76, as in this case, it is advantageous to provide that the cylinder 77 of the key lock 76 is in turn mounted on the fixing support 82.

The present invention is in no way limited to the embodiment described and represented (in the figures), but the person skilled in the art will know how to apply any variant in accordance with the invention as defined in the attached claims.

List of reference signs for figures

1 Handle

2 Truck

3 Truck Door

4 Truck door outer face

5 Handle Box

6 Rotating handle arm

7 Box fixing holes

8 Box flange

9 Bottom of the box

10 Opening in the bottom of the box

11 First end of the rotating arm

12 Cylindrical barrel of the first end of the arm

13 Side wall of the box

14 Fixing pins

15 Second end of the arm or lever

16 Operating handle

17 Cut between first and second ends of the arm

18 First protective cover

19 Second protective cover

20 Blocking piece

21 Hook

22 Straight rod

23, 24 Wings of the first part of the arm

25 Arch

26 Rectilinear portion of the arch

27, 28 Curved branches of the arch

29 Hook Slot

30 Box Plate

31 Plate walls

32 Torsion spring

33 Locking Piece Tabs

34 Flat surfaces of the tabs

35 Blocking piece profile

36 Hook Profile

37 Hook ramp

38 Arm return spring

39 Motorized device

40 Housing

41, 41A Pair of electrical wires and their ends

42 Base

43 Cover

44, 45 Mounting screws

46 Opening

47 Engine

48 Worm gear

49 Cam

50 Pair of motor electrical contacts

51 Engine shaft

52 Cylindrical hole inside the worm screw

53 Flat part on the tree

54 Worm gear tightening screw

55 Washer

56 Ball bearing

57, 58 Support elements for the washer and ball bearing 59 Nut

60 Cam Center Barrel

61 Cylindrical part of the nut

62 Threaded part of the screw

63 Hex Nut Head

64 Nut receiving hole

65 Pin

66 Pin Head

67 Cylindrical outer face of the cam

68 Teeth formed on the external face

69 Thread on the worm gear

70 Mobile cart

71 Guide rail

72 First stop

73 Compression spring

74 Uprights on the car

75 Push Buttons

76 Key lock

77 Rotating cylinder

78 Keyhole

79 Sliding latch

80 Curved end of latch

81 Second mobile cart stop

82 Fixing bracket

83 Protrusion at the level of the housing cover

84 Assembly screws

85 Cylindrical wells

86 Assembly nuts

87 Mounting holes

A1 Handle shaft

A2 Lever axis

A3 Hook Axis

A4 Locking axis

A5 Engine shaft

A6 Camshaft

Claims (9)

1. Espagnolette handle (1) for a truck door (3) (2) consisting of: - a box (5) designed to be attached to said door (3), said box (5) defining a box plane; - a rotating arm (6) movably mounted on said box (5) and designed to be rigidly attached to a latch bar to rotate said latch bar between a closed position where said rotating arm (6) is retracted against said box (5) and an open position where said rotating arm (6) moves away from said box (5); - a hook (21) rotatably mounted on said box (5) to swing between a retention position in which said hook (21) retains said rotating arm (6) in a closed position and a release position of said rotating arm (6); and - a mechanism for locking and unlocking the handle (1) in the closed position, comprising a motor (47), a rotary cam (49) and a transmission system (48, 68) for transmitting the movement of said motor (47) to said cam (49), said transmission system (48, 68) being adapted to drive said cam (49) in rotation about a cam axis (A6) perpendicular to said box plane between a locking position in which said cam (49) prevents said hook (21) from tilting towards said release position and an unlocking position in which said cam (49) allows said hook (21) to tilt to said release position, characterized by: - said motor (47) is a rotary motor around a motor axis (A5); - said transmission system (48, 69) is formed by a worm screw (48) coupled to a shaft (51) of said motor (47) and by teeth (68) present on a cylindrical external surface (67) of said cam (49) and which mesh with said worm screw (68). 2. Espagnolette handle (1) according to claim 1, wherein said motor (47), said transmission system (48, 68) and said cam (49) are embedded in said rotating arm (6) of the handle (1). 3. Espagnolette handle (1) according to claim 1 or 2, wherein, said rotating arm (6) being movable in rotation about a handle axis (A1), said motor axis (A5) of the motor (47) is perpendicular to said handle axis (A1). 4. Espagnolette handle (1) according to one of claims 1 to 3, comprising return means against the rotation of said cam (49) driven by the worm screw (48) from said locking position to said unlocking position. 5. Espagnolette handle (1) according to one of claims 1 to 4, wherein said motor (47), said transmission system (48, 68) and said cam (49) are housed inside a casing (40), and said casing (40) is assembled with removable fixing means (84, 86) on a fixing support (82) rigidly attached to said rotating arm (6). 6. Handle (1) according to one of claims 1 to 5, wherein: - said rotating arm (6) comprises: - a first part (11) mounted rotatably on said housing (5) about a handle axis (A1) and designed to be rigidly attached to a latch bar to drive said latch bar into rotation when said rotating arm rotates; and - a second part forming a lever (15) articulated to pivot about a lever axis (A2) connected to said first part (11), said lever (15) extending, on the one hand, in an arc (25) and extending, on the other hand, in an operating handle (16) of said lever (15); and - said locking and unlocking mechanism comprises a carriage (70) mounted movable to slide along said arc (25) of the lever (15) and coupled to said cam (49) to slide due to its rotation between said locking position and said unlocking position. 7. Espagnolette handle (1) according to claim 6, wherein: - said locking and unlocking mechanism of the handle (1) in the closed position further comprises a locking piece (20) mounted so as to move in rotation on said box (5) to rotate between a locking position in which said locking piece (20) prevents said hook (21) from tilting towards said release position, and an unlocking position in which said locking piece (20) allows said hook to tilt in said release position; and - said carriage (70) comprises unlocking means (75) for said blocking piece (20) which are arranged opposite said blocking piece (20) when said cam (49) is in the unlocked position, said unlocking means (75) being configured to rotate said blocking piece (20) in its unlocked position due to the pivoting of said lever (15) by traction of a user on said operating handle (16). 8. Espagnolette handle (1) according to claim 6 or 7 comprising a key lock (76), said key lock (76) comprising a cylindrical cylinder (77) and a latch (79) slidably mounted through said cylinder (77) and coupled to said carriage (70) to cause said carriage (70) to slide when the cam (49) is locked in the locked position. 9. Espagnolette handle (1) according to claim 8, wherein: - said cam (49) is in the form of a quarter of a toothed wheel and comprises a pin (65) with a pin head (66) which, during rotation of said cam (49) from said locked position to said unlocked position, bears on a first stop (72) of said carriage (70) to push said carriage (70) along said arc (25); and - said latch (79) comprises a curved end (80) abutting against a second stop (81) of said carriage (70) to pull said carriage (70) along said arc (25).