FR3108356A1 - COMBINED OPENING MECHANISM OF A CELL DOOR OF A CELL AND A CONTAINER DOOR OF A CONTAINER - Google Patents

Abstract

The invention relates to a mechanism for opening a cell door (30) and a container door (4), the mechanism comprising a first lever (70) tilting between a first rocking position under the effect of 'a first spring (71) disposed at one of its ends (70A) and a second rocking position under the effect of a force opposing the first spring (71), the first lever (70) adopting its first rocking position when the cell and container doors are open, and is arranged to block, when it is in this position, the locking arm (31) in its second position, the first lever (70) being arranged for, when the cell and container doors are closed, that a first fixed pin (72) rests against the other end (70B) and thus imposes on the first lever (70) its second position so as to release the locking arm (31). Figure for the abstract: figure 3D.

Description

COMBINED OPENING MECHANISM OF A CELL DOOR OF A CELL AND A CONTAINER DOOR OF A CONTAINER

The present invention relates to containment enclosures and in particular to containment enclosures implemented in the fields of nuclear, chemical, bacteriological, medical or even pharmaceutical activities.

In particular, the present application concerns a double door opening mechanism, and in particular a combined opening of a cell door and a container door secured to said cell.

PRIOR ART

Systems for transferring materials and/or objects (hereinafter “Material”) from a first container to a second container are now widely used in the nuclear, pharmaceutical, medical and even chemical industries. Also, given the harmful, even dangerous, nature of these materials for humans and/or the environment, these systems generally meet very specific safety and/or environmental standards.

In this respect, double-door systems intended to guarantee the confinement of both the first and the second container during a material transfer phase have been developed.

In particular, document [1] cited at the end of the description describes one of these double door systems. This document discloses in particular a system for sealing a mobile container on a cell and opening said container. This system is configured to allow the combined opening of a container door and a cell door pressed against each other.

This system generally meets the requirements for the containment of sensitive materials.

However, this system as described in document [1] does not prevent accidental separation of the container door and the cell door when the latter are open. Such separation is particularly likely to occur in the event of a handling error on the part of an operator handling said system.

In addition, the system disclosed in document [1] does not make it possible to prevent the container from unhooking when the cell and container doors are open.

Thus, an object of the present invention is to propose a combined opening system for a double door making it possible to prevent any separation of the container door and the cell door when the latter are open.

Another object of the present invention is to provide a combined opening system for a double door preventing any unhooking of the container when the container door and the cell door are open.

The aims of the invention are, at least in part, achieved by a combined opening mechanism of a cell door of a cell and a container door of a container towards the interior of the cell, the cell door and the container door when closed rest by their contour on, respectively, a cell flange and a container flange provided with a flared edge, said container being fixed to said cell so that, d on the one hand, the flared edge bears against the cell flange, and, on the other hand, that the cell door and the container door are placed against each other by two contact faces called, respectively , first side and second side,

the mechanism comprises a cell door locking arm mechanically secured to a central hub arranged in the cell door, and capable of pivoting, under the action of the locking arm, between a first position and a second position, so as to actuate a hooking mechanism of the container door on the door of the cell when the latter are placed against each other,

the mechanism comprises a first lever capable of rocking between a first rocking position under the effect of a first spring arranged at one of its ends and a second rocking position under the effect of an opposing force to the first spring at its other end, the first lever adopting its first rocking position when the cell and container doors are open, and is arranged to block, when it is in this position, the locking arm in its second position, the first lever being moreover arranged so that, when the cell and container doors are closed, a first fixed pin, projecting into the cell and relative to the cell flange, bears against the other end and thus imposes on the first lever its second position so as to release the locking arm.

According to one mode of implementation, the first lever is arranged on an internal face opposite the first face of the cell door, and comprises at one of its ends a locking pin which fits into a groove formed in the locking arm when the latter is in its second position.

According to one mode of implementation, second levers, each mounted to pivot around a pivot axis on the cell flange, and arranged to adopt, under the action of a control means, one or the other than an attachment position and a retracted position, the attachment position being a position for which said second levers bear against the flared edge so as to press said flared edge against the cell flange, and the withdrawal position is a position for which said levers authorize the withdrawal of the container.

According to one mode of implementation, the mechanism further comprises a third lever, arranged on the cell flange which, when it is in a locking position, blocks the locking arm in its first position so as to keep the door closed of cell, and when it is in an unlocked position allows the passage of the locking arm from its first position to its second position.

According to one mode of implementation, said device further comprises actuating means intended to induce the passage of the third lever from its locking position to its unlocking position as soon as the container flange is actually pressed, in a sealed manner , against the cell flange.

According to one embodiment, the actuating means comprise an actuating pin arranged to exert a force at one end of the third lever through a passage formed in the cell flange, and advantageously closed off by a membrane waterproof.

According to one mode of implementation, the control means is also intended to control the actuating pin and impose on it one or the other of a high position and a low position, the high position being a position for which the third lever is in its unlocking position, and the low position being a position for which the third lever is in its locking position.

According to one mode of implementation, said control means comprises a toothed ring rotatably mounted on the cell flange, the toothed ring, and which when it is rotated simultaneously controls:
- the passage of the second levers from one or the other of the attachment position and the withdrawal position to the other of the attachment position and the withdrawal position
And
- The passage of the actuating pin from one or the other of the high position and the low position to the other of the high position and the low position.

According to one mode of implementation, the mechanism further comprises a third locking means which when the locking arm passes from its first position to its second position blocks the toothed wheel so as to maintain the third levers in their hooking position thus preventing any separation of the container and the cell when the container door and the cell door are open.

According to one mode of implementation, the third locking means comprises a locking pin and a locking block arranged outside the cell, the locking pin being arranged to adopt one or the other of a high position and a low position, the locking pin adopting its high position when the locking arm is in its first position, and its low position when the locking arm is in its second position, the low position of the locking pin being a position for which said pin imposes blocking of the toothed crown by means of a locking block. According to one mode of implementation, the cell door comprises, in projection with respect to its first face, a crown radial arranged to, when the container door is pressing against the cell door, actuating means for unlocking the container door.

According to one embodiment, the unlocking means comprise a movable surface of a flexible membrane of the container door and via which a force exerted by the radial crown is transmitted to locking latches, so disengaging said latches from an internal groove of the container flange and thereby unlocking the container door.

According to one mode of implementation, the attachment mechanism is arranged in the central hub.

According to one mode of implementation, the attachment mechanism comprises, arranged at the base of said central hub, a set of movable pawls, arranged to, when the locking arm passes from its first position to its second position, center and block the container and cell doors between them, the tips of the movable pawls penetrating into an internal groove of a central housing of the container door.

According to one embodiment, said mechanism comprises a second locking means which, as long as the container door is not pressed against the cell door, blocks any pivoting of the central hub.

According to one mode of implementation, the second locking means comprises a lock pivoting between a third position blocking the pivoting of the central hub and a fourth position releasing the central means, the second locking means further comprises a projecting locking pin relative to the first face, and which, when subjected to pressure from the second face, causes the passage of the pivoting lock from its third position to its fourth position.

In one embodiment, a container gasket is placed between a portion of the container flange mating surface and the contour of the container door to seal the container closure against the cell.

According to one mode of implementation, a cell gasket is placed between an internal bore of the cell flange and a part of the external sealing surface of the cell door.

Other characteristics and advantages will appear in the following description of a combined opening mechanism for a cell door of a cell and a container door of a container according to the invention, given as of non-limiting examples, with reference to the appended drawings in which:

are schematic representations of the implementation of a double door opening mechanism of a cell and a container, in particular, Figure 1A represents a container in the approach phase of a cell, the figures 1B and 1C show a container and a cell hooked against each other at their respective flanges, with their doors, respectively, closed and open;

is a schematic representation of a container door and a container flange that can be implemented within the scope of the present invention;

is a schematic representation of the container door and flange of Figure 2A with the door closed;

is an enlargement illustrating the detail of the container door locking latches;

is a representation of a cell door closed on a cell flange;

is a schematic representation, according to a sectional plane passing through the axis of rotation XX', of the attachment mechanism capable of being implemented in the present invention, in particular FIG. 3B represents the attachment mechanism carried by the cell door, said door facing the container door;

is a schematic representation, in particular in magnification, according to a sectional plane passing through the axis of rotation XX', of the attachment mechanism, in particular, the attachment mechanism is inserted in the volume defined by the ring of the container door, and the movable pawls are not engaged in the internal groove;

is a schematic representation, in particular in magnification, according to a sectional plane passing through the axis of rotation XX', of the attachment mechanism, in particular, the attachment mechanism is inserted in the volume defined by the ring of the container door, and the mobile pawls are engaged in the internal groove;

is an illustration of the first safety in a first rocking position according to the present invention;

is an illustration of the first safety in a second rocking position according to the present invention;

is a schematic representation of the second safety in the retracted position with the cell and container flanges spaced from each other;

is a schematic representation of the second safety in the retracted position with the cell and container flanges against each other;

is a schematic representation of the second safety device in the hooked position;

is a schematic representation illustrating the positioning of the toothed crown with respect to the cell flange;

is a schematic representation of the crown safety in its engagement position;

is a schematic representation of the crown safety in its disengaged position;

is a schematic representation illustrating the operation of the third safety device, and in particular the action of the actuating pin on the third lever, in particular FIG. 5A is an illustration of the actuating pin in its low position;

is a schematic representation illustrating the operation of the third safety device, and in particular the action of the actuating pin on the third lever, in particular FIG. 5B is an illustration of the actuating pin in its high position;

is a schematic representation of the action of the notched crown on the actuating pin;

is a schematic representation illustrating the operation of the fifth safety device, and in particular the action of the blocking pin as well as of the locking block on the second levers, in particular FIG. 6A is an illustration of the blocking pin and of the locking block in their low position;

is a schematic representation illustrating the operation of the fifth safety device, and in particular the action of the blocking pin as well as of the locking block on the second levers, in particular FIG. 6B shows the latter in their position in their high position.

DETAILED DISCUSSION OF PARTICULAR EMBODIMENTS

The same elements have been designated by the same references in the various figures and, moreover, the various figures are not drawn to scale. For the sake of clarity, only the elements which are useful for understanding the embodiments described have been represented and are detailed.

In the description which follows, unless otherwise indicated, when reference is made to qualifiers of absolute position, such as the terms "high", "low" etc., or relative, such as the terms "upper", "lower ", etc., or to qualifiers of orientation, such as the terms "horizontal", "vertical", "lateral", etc., reference is made to the orientation of the corresponding figures, it being understood that, in the practice, the devices described can be oriented differently.

The present invention proposes a combined opening mechanism of a cell door of a cell and a container door of a container, and more generally a double door opening mechanism.

In particular, the present invention proposes a more robust mechanism in terms of safety during material transfer operations in a cell from a container docked to the latter.

The general principle of operation of a double door opening mechanism is illustrated in Figures 1A, 1B, and 1C.

FIG. 1A represents in this respect a cell 100 provided with a cell door 102 resting on a cell flange 101. The cell flange 101 and/or the cell door 102 can comprise a gasket intended to ensure the sealing of the cell. closing the cell.

Figure 1A also shows, in the approach phase of cell 100, a container 105 provided with a container door 104 resting on a container flange 103.

Container flange 103 and/or container door 104 may include a gasket to seal the container closure.

FIG. 1B is a diagrammatic representation of the container 105 docked on the cell 100. In particular, this docking of the container 105 on the cell 100 comprises placing the cell 102 and container 104 doors face to face. between the two cell 102 and container 104 doors can be ensured by seals placed on the junction surface 106 of the cell 101 and container 103 flanges.

Finally, FIG. 1C represents the combined opening phase of the container door 104 and of the cell door 102 towards the inside of the cell 100. During this opening phase, the doors are mechanically integral with one of the other. This fastening of the two doors against each other is in particular exerted by means of a hooking mechanism, an example of which will be described later in the description, and which is actuated when said doors 102 and 104 are unlocked.

We can see in Figures 2A to 2D an example of a container, which can be implemented in the context of the present invention.

The container shown in Figure 2A is provided with a door 4 obstructing a container flange 1 when said container is closed. The container flange 1 can be formed in the continuity of the body of the container, not shown in this figure. The container flange 1 comprises a flared edge 1A (which, present, is a divergent extension), one surface of which is intended to form a contact surface 13 with a cell flange described in the following description.

By “diverging extension” is meant an edge that extends radially and outward from the container.

The container flange 1 may further comprise a flange crown 2, embedded in the contact surface 13 of the container flange 1. This flange crown 2 may in particular comprise a flexible gasket 3 intended to be operational on its inner face, in the first place. This flexible seal 3 can also be fixed directly to the container flange 1.

The container flange 1 may further comprise a circumferential groove 10.

The container door 4 further comprises unlocking means. The latter may comprise a plurality (for example four) of locking latches 5 each movable in a radial direction, and arranged to adopt a locked position or an unlocked position. In this regard, when they are in the locked position, the locking latches 5 project relative to the edge of the container door 5 and arranged to be in correspondence with the circumferential groove 10 when said door obstructs the container flange 1 (Figure 2B). In other words, the locking latches 5 make it possible to lock the container door 4 on the container flange 1.

The passage of a locking latch 5 from its locked position to its unlocked position can be obtained by a mechanical action, and in particular a pressure, exerted at the level of locking studs 7 mounted in a sealed manner, via flexible membranes 8, on a second face of the container door 4. Each locking stud 7 has in particular an inclined face 7A, placed in correspondence of an internal end 5A of each of the locking latches 5 (FIG. 2C). By pressing simultaneously on each of the locking studs 7, the locking latches 5 pass from their locking position to their unlocking position so as to unlock the container door.

The second face, as specified in the remainder of the description, is intended to be brought into contact with a first face of a cell door of a cell. It is therefore understood that the first and second faces are external faces of each of these two doors.

The container door 4 also comprises, in projection with respect to its second face, a ring 11 provided, on its internal surface, with an internal groove 12 (FIGS. 2A and 2B). As specified in the rest of the statement, this ring 11, and in particular the internal groove 12, are used to hook the container door to a cell door of a cell.

The container, as shown in Figure 1B, is intended to be docked to a cell provided with a cell door and a cell flange on which said door rests when the cell is closed.

In this regard, Figure 3A is a schematic representation of a cell door 30 connected to the cell flange 20 by a hinge 23.

The cell door 30 comprises in this respect a locking arm 31 mechanically secured to a central hub 36 disposed in the cell door 30, and capable of pivoting around an axis of rotation XX', under the action of the arm lock 31, between a first position and a second position. Throughout the rest of the statement, the first position and the second position are associated both with the locking arm 31 and with the central hub 36. The cell door 30 can also comprise a locking handle 31A which when it is manipulated, makes it possible to pivot the locking arm 31 and the central hub 36.

The cell further comprises, disposed on the cell flange 30, a locking part 25 formed by a ramp in which one end of the locking arm 31 is housed. In particular, when the locking arm 31 is in its first position, the cell door 30 is held in the closed position. The passage of the locking arm 31 from its first position to its second position makes it possible to release the locking arm 31 via a fillet formed in the ramp, and thus authorize the opening of the door of the cell 30.

Furthermore, the cell door 30 comprises a mechanism for attaching the container door 4 to the cell door 30 when the latter are placed one against the other, in other words when the first face is against the second face. .

This attachment mechanism is in particular arranged to be actuated when the locking arm 31 moves from its first position to its second position.

In this regard, Figures 3B, 3C, and 3D show in part a hooking mechanism capable of being implemented within the scope of the present invention. Figures 3B to 3D represent in particular the attachment mechanism according to a sectional plane passing through the axis of rotation XX'.

The attachment mechanism, thus illustrated in these figures, comprises, arranged at the base of said central hub 36, a set of mobile pawls 38. For example, the mechanism comprises two or four mobile pawls 38 mounted to pivot around an axis, and distributed angularly, respectively, at 90° or 180°. The movable pawls are also arranged so that when the locking arm 31 passes from its first position to its second position, center and lock the container 4 and cell 30 doors together (when the latter are face to face). More particularly, the mobile pawls 38 are arranged to engage by pivoting in the internal groove 12 of the ring 11 arranged on the second face of the container door when the locking arm 31 moves from its first position to its second position.

In this regard, Figure 3C shows the hooking mechanism when the cell door 30 and the container door are face to face. In particular, in this representation, the attachment mechanism is housed in the volume defined by the ring 11 of the container door and with its movable pawls 38 not engaged in the internal groove 12. In other words, the attachment between container door 4 and cell door 30 is not effective.

When the locking arm 31 moves from its first position to its second position, the mobile pawls 38 pivot so as to engage in the internal groove 12 and thus keep the cell door and the door fixed to each other. container (Figure 3D).

The unlocking of the container door 4 from the cell door 30 takes place by moving the locking arm 31 from its second position to its first position.

However, the invention is not limited to this single principle of attachment mechanism.

Furthermore, in order to prevent any undesired passage of the locking arm 31 from its second position to its first position, which risks separating the two doors 4 and 30 when the latter are open, the mechanism according to the present invention comprises a first safety device (figures 3E and 3F).

The first safety may, in this respect, comprise a first lever 70 capable of switching between a first rocking position under the effect of a first spring 71 arranged at one of its ends 70A and a second rocking position under the effect of a force opposing the first spring at its other end 70B,

In particular, the first lever 70 adopts its first rocking position when the cell and container doors are open, and is arranged to block, when it is in this position, the locking arm in its second position.

The first lever 70 is also arranged so that, when the cell and container doors are closed, a first fixed pin 72, projecting into the cell and relative to the cell flange, bears against the other end and thus imposes on the first lever its second rocking position so as to release the locking arm 31.

According to an advantageous embodiment, the first lever 70 is arranged on an internal face opposite the first face of the cell door, and comprises at one of its ends 70A a locking pin 73 which fits into a groove 31A formed in the locking arm 31 when said locking arm is in its second position.

Still advantageously, the first lever 70 is protected by a cover 74 in which there is an opening 74A through which the locking pin 73 can pass.

Thus, the implementation of this first security makes it possible to block any movement of the locking arm when the two doors are open and secured to each other. Furthermore, the tilting of the first lever into its second tilting position, which only occurs when the doors are closed, does not require any particular intervention on the part of an operator.

The mechanism according to the present invention can also comprise a second safety device intended to guarantee the plating of the container flange against the cell flange when the two doors are open.

The second safety device, as illustrated in FIGS. 3G, 3H and 3I, comprises second levers 80, each mounted to pivot about a pivot axis 81 on the cell flange 20. FIG. 3G represents in this respect the position of one of the second levers 80 when the container is approaching, through its container door 4, the cell door 30. Thus, as long as the container door is not in contact with the cell door, the pivoting of the second levers 80 remains very limited, and no anchoring of the container on the cell can be exerted by said second levers.

However, as soon as the cell and container doors are in contact with each other, the second levers 80 can adopt, under the action of a control means, one or the other of a attachment position (Figure 3I) and a withdrawal position (Figure 3H). The attachment position is in particular a position for which said second levers 80 bear against the flared edge 1A so as to press said flared edge 1A (therefore the container flange) against the cell flange 20. The retracted position, meanwhile, is a position for which said levers allow the removal of the container.

The manipulation of the second levers 80 allowing them to adopt one or the other of the hooking position and the retracted position can be carried out by means of a toothed crown 82. The toothed crown 82 is in particular rotatably mounted around the axis of rotation XX' on the cell flange 20 (FIG. 4A). The toothed crown 82 can, for example, be manipulated by means of a crank or a motor.

The toothed crown 82 can also be associated with a crown safety intended to block the manipulation of said toothed crown 82 as long as the flared edge 1A is not in contact with the cell flange 20. An example of crown safety is illustrated in Figures 4B and 4C. In this example, the crown safety device comprises a crown safety lever 83 capable of pivoting between one or the other of an engagement position and a disengagement position. In particular, the crown safety lever 83 adopts by default, under the action of a spring 84 arranged at one of its ends, called the force end, its engagement position for which the other of its ends, called engagement end, is engaged in the notches of the toothed ring 82 (FIG. 4B). Thus, when it is in this engagement position, the crown safety lever 83 blocks the toothed crown 82 and thus prevents any manipulation of the second levers 80.

The crown safety lever 83 is moreover arranged to adopt its disengaged position when the flared edge 1a of the container flange 1 approaches and comes into contact with the cell flange 20. In particular, in this configuration, the flared edge 1a exerts a force at the force end which opposes that of the spring 84 so as to disengage the engagement end of the toothed crown 82. This disengagement makes it possible to release the toothed crown and thus allow manipulation of the second levers 80.

Thus, the implementation of the toothed crown in association with the crown safety makes it possible to authorize the manipulation of the second levers only if, and only if, the container flange is actually in contact with the container flange.

The mechanism according to the present invention can also comprise a third safety device intended to allow the opening of the cell door, and more particularly the manipulation of the locking arm, only when the container flange 1 is actually pressed, in a sealed manner, against cell flange 20.

The third safety device may in particular comprise a third lever 90, arranged on the cell flange 20, and more particularly in the ramp of the locking part 25. The third lever is in particular arranged to adopt one or the other of a locking position or an unlocking position by pivoting about a pivot axis 91. More particularly, when it is in a locking position, the third lever 90 locks the locking arm 31 (FIG. 5A) in its first position so as to keep the cell door closed, and, when it is in an unlocked position, said third lever 90 allows passage of the locking arm 31 from its first position to its second position (FIG. 5B).

In a particularly advantageous manner, the third safety device is provided with actuating means intended to induce the passage of the third lever 90 from its locking position to its unlocking position.

In this regard, the actuating means may comprise an actuating pin 92 arranged to exert a force at one end of the third lever through a passage 93 formed in the cell flange, and advantageously closed off by a membrane 94 flexible and waterproof.

Thus, as illustrated in FIG. 5A, the actuating pin 92 is recessed, in a so-called low position, and exerts no action on the third lever 90 so that the latter blocks the locking arm 31 in its first position. Conversely, the actuating pin 92, as shown in Figure 5B, is in a so-called high position, and exerts a force at one end of the third lever 90 so that the latter adopts its position of unlocking.

The command making it possible to induce the actuating pin to move from one of its high position and its low position to the other from its high position and its low position can advantageously be carried out by means of the toothed crown 82 and more particularly by rotation of the latter (FIG. 5C). More particularly, pin 92 can be carried by a block 92a, said block 92a being mounted at one end of a worm screw. Said endless screw may also comprise, at its other end, a gear cooperating with the notches of the toothed crown. Thus a rotation of the notched crown in one or the other of the directions of rotation makes it possible to impose one or the other of the low position and the high position on the actuating pin 92.

This last aspect is particularly advantageous, insofar as manipulation of the locking arm is only permitted in this case if the container flange is correctly pressed against the cell flange. In other words, the absence of a container will prevent any manipulation of the locking arm.

In a particularly advantageous manner, the cell door 30 comprises, projecting relative to its first face, a radial crown 32 arranged to, when the container door is resting against the cell door, actuating the unlocking means of the door container (Figure 3B). In particular, when the first face is in contact with the second face, the radial crown 32 is brought to rest against the flexible membranes 8 so as to exert pressure on the locking latches 5 and thus unlock the container door 4 .

The mechanism according to the present invention may also include a fourth safety device which is arranged to block any pivoting of the central hub as long as the container door is not pressed against the cell door.

In particular, the fourth safety device can comprise a second locking means, for example provided with a pivoting lock between a third position blocking the pivoting of the central hub 36 and a fourth position releasing the central means 36. The second locking means can also include a locking pin 95 in projection with respect to the first face, and which, when it undergoes pressure from the second face, causes the passage of the pivoting lock from its third position to its fourth position (FIGS. 3B, 3C and 3D ).

The mechanism according to the present invention can also comprise a fifth safety device which, when the locking arm 31 passes from its first position to its second position, blocks the second levers in their hooking position, and more particularly the rotation of the toothed crown 82 ( figures 6A and 6B).

This fifth security may in particular comprise a third locking means provided for example with one or more locking pins 26 arranged in the ramp of the locking piece 25 and a locking block 27 arranged outside the cell.

In this regard, the locking pin 26 is likely to adopt one or the other of a high position and a low position. In particular, the locking arm 31 and the locking pin 26 are arranged so that when the locking arm is in its first position, it imposes on the locking pin its high position, while when the locking arm 31 is in its second position, the latter releases the blocking pin 26 which, under the action of a spring, adopts its low position.

Furthermore, the locking block 27 is arranged to adopt one or the other of a high position and a low position.

In particular, the locking block 27, when it is in the low position, blocks the rotation of the toothed crown 82 so as to maintain the second levers 80 in their attachment position. Conversely, when the locking block 27 is in its high position, the latter releases the notched wheel.

Thus, according to the present invention, when the fifth security is considered, the blocking pin 26 when it passes from its high position to its low position, exerts a force, through a flexible membrane, on the locking block 27 so as to move said block from its high position to its low position (FIG. 6A).

Conversely, when the blocking pin 26 is in its high position, the latter no longer exerts any force on the locking block 27 which thus returns to its high position under the effect of a spring (FIG. 6B).

Finally, the blocking pin 26 is arranged to be forced into its high position when the locking arm is in its first position, and move from its high position to its low position under the effect of a spring 28 when the locking arm lock passes into its second position.

Thus, the manipulation of the locking arm to move the latter from its first position to its second position, makes it possible to release the locking pin 26.

When it is released, the blocking pin 26 passes into its low position under the action of the spring 28, and exerts a force on the locking block 27 which in turn passes into its low position and thus blocks the third levers 80 in their hanging position.

In other words, the passage of the locking arm from its first position to its second position makes it possible to secure the hooking of the container on the cell.

REFERENCES

[1] EP 2 721 615

Claims (18)

Combined opening mechanism of a cell door (30) of a cell and a container door (4) of a container towards the interior of the cell, the cell door (30) and the door of container (4) when they are closed rest by their outline on, respectively, a cell flange (20) and a container flange (1) provided with a flared edge (1A), said container being fixed to said cell so that, on the one hand, the flared edge (1A) bears against the cell flange (20), and, on the other hand, that the cell door (30) and the container door (4) are placed against each other by two contact faces called, respectively, first face and second face,
the mechanism comprises a locking arm (31) of the cell door (30) mechanically secured to a central hub (36) arranged in the cell door (30), and capable of pivoting, under the action of the locking arm lock (31), between a first position and a second position, so as to actuate a hooking mechanism of the container door (4) on the door of the cell when the latter are placed against each other,
the mechanism comprises a first lever (70) capable of rocking between a first rocking position under the effect of a first spring (71) arranged at one of its ends (70A) and a second rocking position under the effect of a force opposing the first spring (71) at its other end (70B), the first lever (70) adopting its first rocking position when the cell and container doors are open, and is arranged to block, when it is in this position, the locking arm (31) in its second position, the first lever (70) being furthermore arranged so that, when the cell and container doors are closed, a first fixed pin (72), projecting into the cell and relative to the cell flange (20), or resting against the other end (70B) and thus imposes on the first lever (70) its second position so as to release the locking arm (31). Mechanism according to Claim 1, in which the first lever (70) is arranged on an internal face opposite the first face of the cell door (30), and comprises at one of its ends a locking pin (73 ) which is inserted into a groove (31A) formed in the locking arm (31) when the latter is in its second position. Mechanism according to Claim 1 or 2, in which second levers (80), each, pivotally mounted about a pivot axis (81) on the cell flange (20), and arranged to adopt, under the action of a control means, one or the other of a hooking position and a retracted position, the hooking position being a position for which said second levers (80) bear against the flared edge (1A) so as to press said flared edge (1A) against the cell flange (20), and the withdrawal position is a position for which said levers (80) authorize the withdrawal of the container. A mechanism according to claim 3, wherein the mechanism further comprises a third lever (90), disposed on the cell flange (20) which when in a locking position locks the locking arm (31) in its first position so as to keep the cell door (30) closed, and when it is in an unlocked position allows the passage of the locking arm (31) from its first position to its second position. Mechanism according to Claim 4, in which the said mechanism further comprises actuating means intended to induce the passage of the third lever (90) from its locking position to its unlocking position when the container flange (1) is effectively pressed, in a sealed manner, against the cell flange (20). Mechanism according to Claim 5, in which the actuating means comprise an actuating pin (92) arranged to exert a force at one end of the third lever (90) through a passage formed in the cell flange ( 20), and advantageously closed off by a waterproof membrane (94). Mechanism according to Claim 6, in which the control means is also intended to control the actuating pin (92) and impose on it one or the other of a high position and a low position, the high position being a position for which the third lever is in its unlocking position, and the low position being a position for which the third lever is in its locking position. A mechanism according to claim 7, wherein said control means comprises a ring gear (82) rotatably mounted on the cell flange (20), the ring gear (82), and which when rotated controls simultaneous:
- the passage of the second levers (80) from one or the other of the hooking position and the retracted position to the other of the hooking position and the retracted position
And
- The passage of the actuating pin from one or the other of the high position and the low position to the other of the high position and the low position. Mechanism according to Claim 8, in which the mechanism further comprises a third locking means which when the locking arm (31) passes from its first position to its second position locks the toothed wheel so as to maintain the third levers in their position. hook thus preventing any separation of the container and the cell when the container door (4) and the cell door (30) are open. Mechanism according to Claim 9, in which the third locking means comprises a locking pin (26) and a locking block 27 arranged outside the cell, the locking pin being arranged to adopt one or the other from a high position and a low position, the blocking pin (26) adopting its high position when the locking arm (31) is in its first position, and its low position when the locking arm is in its second position, the low position of the blocking pin (26) being a position for which said pin imposes blocking of the toothed crown by means of a locking block (27). Mechanism according to one of Claims 1 to 10, in which the cell door (30) comprises, projecting with respect to its first face, a radial ring arranged so that, when the container door (4) bears against the cell door (30), actuating means for unlocking the container door (4). Mechanism according to Claim 11, in which the unlocking means comprise a movable surface of a flexible membrane of the container door (4) and via which a force exerted by the radial crown is transmitted to locking latches , so as to disengage said latches from an internal groove of the container flange (1) and thus unlock the container door (4). Mechanism according to one of Claims 1 to 12, in which the attachment mechanism is arranged in the central hub (36). Mechanism according to Claim 13, in which the hooking mechanism comprises, arranged at the base of the said central hub (36), a set of movable pawls (38), arranged to, when the locking arm (31) passes from its first position towards its second position, centering and blocking the container and cell doors between them, the tips of the movable pawls (38) penetrating into an internal groove of a central housing of the container door (4). Mechanism according to one of Claims 1 to 14, in which the said mechanism comprises a second locking means which, as long as the container door (4) is not pressed against the cell door (30), blocks any pivoting of the central hub (36). Mechanism according to claim 15, in which the second locking means comprises a bolt pivoting between a third position blocking the pivoting of the central hub (36) and a fourth position releasing the central means, the second locking means further comprises a locking in projection with respect to the first face, and which, when it undergoes pressure from the second face, causes the passage of the pivoting lock from its third position to its fourth position. Mechanism according to one of Claims 1 to 16, in which a container seal placed between a part of the contact surface of the container flange (1) and the contour of the container door (4) to provide sealing closing the container against the cell. Mechanism according to one of Claims 1 to 17, in which a cell gasket placed between an internal bore of the cell flange (20) and a part of the external sealing surface of the cell door (30).