Device for handling elements contained in a glove box by forming a double sealed wall, Associated glove box.

Abstract

Device for handling elements contained in a glove box by forming a sealed double wall, associated glove box. The invention essentially consists of providing a seal for the open end of a protective sleeve 15 when a robotic arm or a slave arm is inserted inside, within a glove box 10. Figure for the abstract: fig.2

Description

Title of the invention: Device for handling elements contained in a glove box by forming a sealed double wall, associated glove box. Technical field

[0001] The present invention relates to the field of glove boxes, and more particularly to devices for handling elements contained in a glove box. Prior art

[0002] A glove box is a hermetic enclosure of which at least one of its walls is transparent, the hermetic enclosure being adapted for handling substances and objects in a controlled atmosphere. Glove boxes are particularly interesting when the substances or objects to be handled are harmful to humans or are contaminable, as is the case, for example, in the nuclear, chemical, pharmaceutical and medical fields.

[0003] A glove box comprises at least one through opening provided in one of its walls and in which a flexible sleeve is intended to be mounted in a sealed manner, in order to access the products and materials present inside the glove box. The flexible sleeve ensures the maintenance of a controlled atmosphere within the enclosure by forming a hermetic barrier through which the elements contained in the enclosure can be handled.

[0004] Usually, the flexible sleeve is a glove to accommodate an operator's hand.

[0005] [Fig.l] illustrates a part of a glove box 1 comprising a through opening 2 in which a glove 3 is mounted in a sealed manner. The glove 3 is mounted in the opening 2 by an enclosure ring 4 fixed to the wall 5 delimiting the enclosure by pinching using a screw-nut system 6.

[0006] A support ring 7 is removably mounted on the enclosure ring 4. The end of the glove 3 is provided with a bead 8 which is housed between the support ring 7 and the enclosure ring 4. The support ring 7 compresses the bead 8 against the enclosure ring 4, thus ensuring the sealing of the assembly. Also known from the prior art are gloves fixed in the opening of a glove box using a support ring and an enclosure ring, said gloves being free of beading and the sealing being ensured by seals.

[0007] An immobilizing ring 9 makes it possible to immobilize the support ring 7 with the enclosure ring 4.

[0008] Handling items contained in a glove box using a glove, such as than that illustrated in [Fig.l], remains dangerous for an operator.

[0009] Indeed, there are risks of accidents that could break the seal of the glove box and therefore expose the operator to the harmful elements contained therein. In particular, there is the risk of piercing the glove during handling.

[0010] Although the glove box is opaque to alpha and beta radiation, gamma radiation can be transmitted through the glove. Also, glove boxes using a glove as a flexible sleeve do not provide optimal protection for the handling of radioactive elements by an operator.

[0011] Furthermore, certain tasks involving handling elements contained in a glove box by an operator are tedious, for example preventive maintenance and / or cleaning tasks. Carrying out these tedious tasks by an operator reduces the working time available for other tasks with higher added value.

[0012] In order to overcome at least some of the aforementioned drawbacks, a robotic arm or a telemanipulator can be used for manipulating elements contained in a glove box.

[0013] However, standard glove boxes are not suitable for the installation of a robotic arm entirely inside their enclosure. In particular, the interior of glove boxes is generally cramped and may be cluttered with numerous objects. In addition, a robotic arm may not be suitable for withstanding the confined atmosphere of glove boxes, which may in particular be corrosive, dusty and / or radioactive. Furthermore, the maintenance of a robotic arm arranged entirely inside a glove box would prove very complex.

[0014] It is therefore preferable to place the robotic arm outside the glove box and insert it into the flexible sleeve, which is where appropriate a protective sleeve for the robotic arm, in order to manipulate the elements within the glove box.

[0015] Similarly, given the operation of a remote manipulator, for these same manipulation needs, it is necessary to arrange a master arm of the remote manipulator outside the glove box and to insert a slave arm into the flexible sleeve, which is where appropriate a protective sleeve for the slave arm.

[0016] Like a glove, the protective sleeve ensures that a controlled atmosphere is maintained within the glove box by forming a hermetic barrier between the interior of the box and the robotic arm or the telemanipulator. In addition, the protective sleeve protects the robotic arm or the telemanipulator against the confined atmosphere. Generally, the mounting of the protective sleeve in an opening of a glove box is similar to that of a glove, for example to the mounting of the glove 3 illustrated in [Fig.l].

[0017] Furthermore, even when using a robotic arm or a telemanipulator, there are There is always a risk of piercing the protective sleeve. If this happens, the containment of the controlled atmosphere of the glove box is no longer ensured. In addition, a breach in the hermeticity of a protective sleeve may not be detected for a long period, in particular a period longer than the detection time for a breach in the hermeticity of a glove. Indeed, the operator may notice a piercing of the glove himself during handling or the detection may be carried out during an inspection when the operator leaves the intervention zone containing the glove box. These methods of detecting a leak are not suitable for a protective sleeve in which a robotic arm or a slave arm of a remote manipulator is inserted for several days because they cannot then be implemented sufficiently frequently.

[0018] Furthermore, sealed crossing systems are known which are used in shielded cells, particularly in the nuclear industry. These systems are, for example, implemented for transmission between the master arm and the slave arm of a remote manipulator. However, these systems are not suitable for glove boxes, because they require a thick wall which must withstand significant mechanical forces, which is not the case for the walls of a glove box.

[0019] There is therefore a need to improve devices for handling elements contained in a glove box, in particular which overcome the aforementioned drawbacks.

[0020] In particular, there is a need for such a device which best guarantees the confinement of the controlled atmosphere of the glove box.

[0021] The aim of the invention is to respond, at least in part, to this(these) need(s). Statement of the invention

[0022] To this end, the invention relates to a device for handling elements contained in a glove box, comprising: - an enclosure ring adapted to be fixed on the edge of a through opening provided in a wall (16) of the glove box, - a sealed protective sleeve comprising an open end, - a support ring on which the hermetic protective sleeve is mounted in a sealed manner, the support ring being adapted to fit into the enclosure ring, so as to fix the protective sleeve to the enclosure ring in a sealed manner, - a robotic arm or a slave arm of a telemanipulator comprising a shutter, the robotic arm or the slave arm being adapted to be inserted into the protective sleeve with the shutter which seals the open end of the protective sleeve.

[0023] Preferably, the device comprises an immobilizing ring for locking the support ring when fitted into the enclosure ring.

[0024] Preferably, the robotic arm or the slave arm is mounted on a support for absorbing forces exerted by the robotic arm or the slave arm, the support being adapted to be fixed to the floor, to a partition of a structure, such as a wall or to the ceiling.

[0025] Preferably, the device comprises a pressure sensor intended to be arranged in the protective sleeve closed by the shutter to detect a change in pressure in the sealed volume delimited by the protective sleeve and the shutter.

[0026] Preferably, the shutter comprises a base, a hermetic collar sealed around the base and a means for sealingly fixing the collar to the support ring.

[0027] Preferably, the collar is made of flexible polymer, preferably polyurethane or polyvinyl chloride.

[0028] Preferably, the collar comprises an inner bead housed by being compressed in a groove provided in the base.

[0029] Preferably, the fixing means is a support ring on which the collar is mounted, the support ring being adapted to fit into the support ring, so as to fix the collar to the support ring in a sealed manner.

[0030] Preferably, the support ring is adapted to compress the collar against the support ring so as to ensure sealing between the collar and the support ring, the collar preferably comprising an external bead housed in a groove provided in the support ring and adapted to be compressed against the support ring.

[0031] The invention also relates to a glove box comprising: - a through opening provided in one of its walls, - a device according to the present invention, the enclosure ring being fixed on the edge of the through opening and the support ring being fitted into the enclosure ring by sealingly fixing the hermetic protective sleeve to the enclosure ring.

[0032] Preferably, the box comprises a spacer adapted to be assembled, preferably by a bayonet type fixing, with the support ring and the base of the shutter of the device so as to maintain a radial spacing, preferably constant, between the support ring and the base.

[0033] Preferably, the box comprises an insertion sleeve for guiding the shutter in translation during its insertion into the hermetic protective sleeve, preferably the insertion sleeve being configured to keep the shutter concentric with the support ring.

[0034] Preferably, the insertion sleeve comprises a mechanism capable of exerting a thrust force on the shutter, preferably the mechanism transforming a rotational movement of a steering wheel into a translational movement.

[0035] The present invention therefore essentially consists of proposing a sealing of the open end of a protective sleeve during the insertion of a robotic arm or a slave arm inside, within a glove box.

[0036] Thus, the device according to the invention makes it possible to handle the elements contained in a glove box while creating a double sealed wall between the controlled atmosphere of the glove box and the external environment. The first sealed wall is formed by the protective sleeve and the second sealed wall is formed by a shutter which seals the open end of the protective sleeve.

[0037] In this way, in the event of a break in the seal of the protective sleeve, the confinement of the controlled atmosphere of the glove box is still ensured by the shutter.

[0038] Unlike the devices of the prior art, the confinement of the controlled atmosphere does not therefore rely on a single wall which may be relatively fragile and subject to a significant risk of piercing. In addition, the wall formed by the shutter is not subject to the risks of piercing and / or tearing, in particular it is not placed in contact with the elements handled.

[0039] The manipulation of the elements contained in a glove box can be carried out by the robotic arm or the slave arm of the device according to the invention. This avoids the disadvantages and risks associated with manipulation by an operator using a glove.

[0040] Furthermore, advantageously, with the device according to the invention, the mechanical forces of the robotic arm or the slave arm are not taken up by a wall of the glove box.

[0041] Furthermore, the device is suitable for existing glove boxes and therefore does not require modification of the latter for the installation of the device. In particular, the enclosure ring, the support ring and the protective sleeve may be similar to those already existing for mounting a protective sleeve in the opening of a glove box. In particular, they may comply with existing standards according to ISO 11933-1.

[0042] The device according to the invention is simple and quick to install on a glove box. In particular, the device is suitable for replacing a used glove or protective sleeve with a new protective sleeve without breaking the confinement of the controlled atmosphere. Brief description of the drawings

[0043] Other advantages and characteristics will become more apparent upon reading the detailed description, given for illustrative and non-limiting purposes, with reference to the following figures:

[0044] [Fig.l] [Fig.l] is a schematic sectional view of the mounting, according to the prior art, of a glove in an opening of a glove box.

[0045] [Fig.2] [Fig.2] is a schematic sectional view of a device according to the invention mounted in an opening of a glove box.

[0046] [Fig.3], [Fig.4], [Fig.5], [Fig.6] and [Fig.7] Figures 3 to 7 are schematic sectional views showing different steps of a method of placing a protective sleeve of a device according to the invention, in a glove box.

[0047] [Fig.8], [Fig.9], [Fig.10], [Fig.1 1], [Fig.12], [Fig.13] and [Fig.14] Figures 8 to 14 are schematic sectional views showing different steps of a method of placing a robotic arm of a device according to the invention, in the protective sleeve, placed according to figures 3 to 7. Detailed description

[0048] [Fig.l] has already been described in the preamble and will therefore not be described subsequently.

[0049] For reasons of clarity, the different elements of the figures are represented in free scale, the actual dimensions of the different parts not necessarily being respected.

[0050] [Fig. 2] illustrates a glove box 10 comprising a through opening 11 and a device 12 according to the invention for handling elements contained in the glove box 10, which is mounted in a sealed manner through the through opening.

[0051] The device 12 comprises an enclosure ring 13, a support ring 14 and a protective sleeve 15.

[0052] The enclosure ring 13 is fixed by pinching or by welding to a wall 16 of the glove box 10 around the opening 11.

[0053] The protective sleeve 15 is mounted in a sealed manner at its open end on the support ring 14, itself 14 fitted in a sealed manner in the enclosure ring 13.

[0054] The support ring 14 can be clipped into the enclosure ring 13.

[0055] The device 12 also comprises an immobilizing ring 17 which ensures the fixed holding of the support ring 14 fitted into the enclosure ring 13.

[0056] The waterproof mounting of the protective sleeve 15 in the opening 11 can be according to existing standards according to the ISO 11933-1 standard.

[0057] For example, as illustrated in [Fig.2], the protective sleeve 15 may comprise a bead 18 at its open end inserted in a sealed manner in the support ring 14, the seal between the support ring 14 and the enclosure ring 13 then being ensured by a lip seal 19 on the outer periphery of the support ring 14.

[0058] According to another example, the mounting of the protective sleeve 15 in the opening 11 may be similar to that illustrated in [Fig.l].

[0059] The device 12 also comprises a robotic arm 20 inserted into the protective sleeve 15 so that it can manipulate elements contained in the glove box 10.

[0060] The robotic arm 20 comprises at its base a shutter 21 which seals the open end of the protective sleeve 15 in a sealed manner. The shutter 21 is surrounded by the support ring 14. Thus, the remainder of the robotic arm 20 is housed in a sealed volume delimited between the protective sleeve 15 and the shutter 21. In the event of piercing the protective sleeve 15, the sealing of the robotic arm 20 in the glove box 10 is still ensured by the shutter 21.

[0061] A pressure sensor can be housed in the aforementioned sealed volume and thus advantageously detect a possible leak and therefore detect the piercing of the protective sleeve 15.

[0062] The shutter 21 comprises a base 22, on which the rest of the robotic arm 19 is mounted, and a hermetic collar 23, fixed in a sealed manner around the base 22.

[0063] The outer periphery of the collar 23 is fixed in a sealed manner to the support ring 14.

[0064] Thus, the base 22 partially closes the open end of the protective sleeve 15 and the collar 23 seals the space between the base 22 and the support ring 14.

[0065] The collar 23 has the shape of a hollow disc. The inner periphery of the collar 23 comprises an inner bead 24 housed by being compressed in the base 22, which improves the sealing of the fixing of the collar 23 around the base 20. In particular, the base 22 may comprise two plates sandwiching the inner bead 24.

[0066] The shutter 21 may comprise a support ring 25 as a means of fixing the collar 23 with the support ring 14. The outer periphery of the collar 23 is fixed to the support ring 25. In particular, the outer periphery of the collar 23 comprises an outer bead 26 housed in a groove provided on the outer periphery of the support ring 25.

[0067] The support ring 25 is fitted into the support ring 14 by pressing the collar 23 against the support ring 14. In particular, the support ring 24 can be pushed into the support ring 14 and come to bear against a stop of the support ring 14 projecting towards its interior. Alternatively, the support ring 14 can comprise an internal radial groove and the support ring 25 can comprise a rib on its external periphery so as to clip the support ring 25 into the support ring 14.

[0068] The collar 23 is sandwiched between the stop and the support ring 24.

[0069] The outer bead 26 is compressed against the inner wall of the support ring 14 by the support ring 25. The outer bead 26 thus improves the sealing of the attachment of the collar 23 with the support ring 14.

[0070] The robotic arm 20 is mounted on a support 27 independent of the glove box 10 and adapted to take up on the ground the forces exerted by the robotic arm 20. Thus, the robotic arm 20 does not transmit any mechanical force to the wall 16 of the glove box 10.

[0071] This support 27 can be adapted to be fixed to the floor, to a partition of a structure, such as a wall or to the ceiling.

[0072] This support 27 can also be movable relative to the glove box 10, for example the support 27 can comprise casters, preferably braked casters.

[0073] The support 27 may comprise a lifting means for vertically moving the robotic arm 20 relative to the ground and to the glove box 10. It is thus possible to adjust the height of the robotic arm 20 as a function of the height of the opening 11 relative to the ground. This lifting means may for example comprise a telescopic upright and / or a jack.

[0074] The support 27 may comprise an attachment means configured to removably attach the support 27 to the frame of the glove box 10.

[0075] Figures 3 to 7 show different steps of a method for placing a protective sleeve 152, of a device 12 according to the invention, in a glove box 10. The method for placing the protective sleeve 152 in a glove box 10 is similar to the standard procedures according to the ISO 11933-1 standard.

[0076] The new protective sleeve 152 is put in place by replacing another protective sleeve 151, which is used or a glove 3.

[0077] Thus, as illustrated in [Fig.3], a used protective sleeve 151, to be replaced, is mounted in a sealed manner in an opening 11 of a glove box 10.

[0078] [Fig.4] shows the removal of the immobilizing ring 17 to carry out the replacement placement of the used protective sleeve 151.

[0079] This removal is followed by the insertion of the new protective sleeve 152 by fitting a new support ring 142 into the enclosure ring 13, the new support ring 142 pushing the old support ring 141 until it falls inside the glove box 10. This insertion step, illustrated in Figures 5 and 6, makes it possible to maintain the confinement of the controlled atmosphere in the glove box 10.

[0080] The insertion can be carried out using an insertion sleeve, not shown here. An insertion sleeve is also called an "ejection barrel" in the technical field.

[0081] The support ring 142 to be inserted and the new protective sleeve 152 are put in place in the insertion sleeve. The insertion sleeve is locked onto the enclosure ring 13 and then the sleeve is screwed in, which inserts the support ring 142 into the enclosure ring 13. Once the sleeve is in the stop position, the insertion of the new support ring 142 and the new protective sleeve 152 is complete. The insertion sleeve can be configured so that at the end of its travel, in the stop position, the support ring 142 clips into the enclosure ring 13. The insertion sleeve is then unscrewed from the enclosure ring 13 and then removed.

[0082] Once the support ring 142 is fitted into the enclosure ring 13, the immobilizing ring 17 is put back in place, thus locking the support ring 142 in the enclosure ring 13, as shown in [Fig.7].

[0083] Figures 8 to 14 show different steps of a method of placing a robotic arm 20 in a protective sleeve 15, of a device 12 according to the invention.

[0084] Initially, as shown in [Fig.8], the support ring 25 is only connected to the base 22 by the collar 23. Also, the support ring 25 hangs while bearing against the base 22. The spacing between the support ring 25 and the base 22 is then not constant.

[0085] In order to maintain a constant radial spacing between the support ring 25 and the base 22, facilitating the fitting of the support ring 25 into the support ring 14, the support ring 25 is fixed to a spacer 28.

[0086] To do this, the spacer 28 may comprise pins 29 and the support ring 25 may comprise grooves 30 formed within it, the pins 29 and the grooves 30 constituting a bayonet fixing system, which makes it possible to fix the support ring 25 to the spacer 28.

[0087] The spacer 28 is arranged concentrically with respect to the base 22. The support ring 25 then has a constant radial spacing with the base 22 and the collar 23 is stretched uniformly.

[0088] The spacer 28 may also be fixed to the base 22, for example by bayonet fixing. Alternatively, the spacer 28 may not be fixed to the base 22, and may for example be in the form of a sleeve surrounding the base 22.

[0089] The assembly of the spacer 28 is followed by the placement of a shutter 21 and the spacer 28 in an insertion sleeve 31, as illustrated in [Fig.10].

[0090] The insertion sleeve 31 is then positioned around the enclosure ring 13, coming to bear against the enclosure ring 13 or against the wall 16 of the glove box 10.

[0091] [Fig.11] shows the insertion sleeve 31 positioned around the enclosure ring 13. The shutter 21 is then centered relative to the enclosure ring 13 and the support ring 14. This prevents the shutter 21 from pushing the support ring 14 when it is inserted into the latter.

[0092] The robotic arm 20 is inserted into the protective sleeve 15 then the shutter 21 is translated into the support ring 14 while being guided by the insertion sleeve 31.

[0093] [Fig. 12] illustrates the translation of the shutter 21 in the support ring 14. In order to facilitate the insertion of the robotic arm 20, the support 27 comprises rollers 32. The translation of the shutter 21 can be carried out by pushing the spacer 28. In particular, the spacer 28 can comprise a threaded rod 33 to be screwed into the body of the insertion sleeve 31, for example using a handwheel not shown here.

[0094] As shown in [Fig. 13], the translation of the shutter 21 stops when the support ring 25 comes to bear against a stop of the support ring 14 projecting inwards. The shutter 21 then seals the protective sleeve 15. Alternatively, the threaded rod 33 or the insertion sleeve 31 may comprise a stop from which the threaded rod 33 is blocked and can no longer be screwed further into the insertion sleeve 31, ending the thrust of the spacer 28.

[0095] Once the robotic arm 20 is inserted into the protective sleeve 15 with the seal provided by the shutter 21, the support 27 is fixed relative to the glove box 10. For example, the support 27 may comprise a means of fixing to the frame of the glove box 10 and / or the casters 32 may comprise brakes which are engaged.

[0096] The insertion sleeve 31 can then be removed. Then, the spacer 28 can also be removed, in particular by rotation, for example by a quarter turn, as illustrated in [Fig. 14].

[0097] If the protective sleeve 15 is intact and therefore still ensures the confinement of the controlled atmosphere of the glove box 10, the removal of the robotic arm 20 from the protective sleeve 15 and from the interior of the glove box 10 can be carried out by carrying out, in reverse order, the steps of the insertion method described previously.

[0098] Once the robotic arm 20 is removed, the protective sleeve 15 can be replaced with a new protective sleeve 15 or a glove 3 similarly to the method illustrated in Figures 3 to 7.

[0099] If the protective sleeve 15 is pierced, then the confinement of the controlled atmosphere of the glove box 10 is guaranteed as long as the shutter 21 closes the protective sleeve 15.

[0100] Where appropriate, at least two methods of replacing the protective sleeve 15 are possible.

[0101] A first replacement method consists of pushing the assembly comprising the support ring 14, the protective sleeve 15 and the robotic arm 20 into the glove box 10, after removing the immobilizing ring 17. This pushing is carried out if simultaneously with a fitting of the new support ring 14, on which a glove 3 or a new protective sleeve 15 is mounted, into the enclosure ring 13. This first method comprises, prior to pushing the assembly, a disconnection step between the robotic arm 20 and the support 27. This first method can be carried out similarly to the method described for figures 3 to 7. Once pushed inside the glove box 10, the robotic arm 20 is considered as waste that can be removed.

[0102] A second replacement method comprises removing the robotic arm 20 from the protective sleeve 15 followed by replacing the protective sleeve 15 according to a conventional method of replacing a punctured glove. The robotic arm 20 may be decontaminated for reuse.

[0103] Other variants and improvements can be envisaged without departing from the scope of the invention.

[0104] For example, the robotic arm 20 can be replaced by a slave arm of a telemanipulator. If necessary, the base 22 of the shutter 21 can be adapted to transmit the movements of the master arm of the telemanipulator to the slave arm.

[0105] According to another example, the outer bead 26 can be inserted in a sealed manner into the support ring 25 and the seal between the support ring 25 and the support ring can be ensured by a lip seal surrounding the support ring 25.

Claims

Claims

1. Device (12) for handling elements contained in a glove box (10), comprising: - an enclosure ring (13) adapted to be fixed on the edge of a through opening (11) formed in a wall (16) of the glove box, - a hermetic protective sleeve (15) comprising an open end, - a support ring (14) on which the hermetic protective sleeve is mounted in a sealed manner, the support ring being adapted to fit into the enclosure ring, so as to fix the protective sleeve in a sealed manner to the enclosure ring, - a robotic arm (20) or a slave arm of a remote manipulator comprising a shutter (21), the robotic arm or the slave arm being adapted to be inserted into the protective sleeve with the shutter which seals the open end of the protective sleeve.

2. A device according to claim 1, comprising an immobilizing ring (17) for locking the support ring when fitted into the enclosure ring.

3. Device according to one of the preceding claims, the robotic arm or the slave arm being mounted on a support (27) for absorbing forces exerted by the robotic arm or the slave arm, the support being adapted to be fixed to the floor, to a partition of a structure, such as a wall or to the ceiling.

4. Device according to one of the preceding claims, comprising a pressure sensor intended to be arranged in the protective sleeve closed by the shutter to detect a change in pressure in the sealed volume delimited by the protective sleeve and the shutter.

5. Device according to one of the preceding claims, the shutter comprising a base (22), a hermetic collar (23) fixed in a sealed manner around the base and a means for sealingly fixing the collar to the support ring.

6. Device according to claim 5, the collar being made of flexible polymer, preferably polyurethane or polyvinyl chloride.

7. Device according to claim 5 or 6, the collar comprising an inner bead (24) housed by being compressed in a groove provided in the base.

8. Device according to one of claims 5 to 7, the fixing means being a support ring (25) on which the collar is mounted, the support ring being adapted to fit into the support ring, so as to fix the collar to the support ring in a sealed manner.

9. Device according to claim 8, the support ring being adapted to compress the collar against the support ring so as to ensure sealing between the collar and the support ring, the collar preferably comprising an external bead (26) housed in a groove formed in the support ring and adapted to be compressed against the support ring.

10. Glove box (10) comprising: - a through opening (11) formed in one of its walls (16), - a device (12) according to one of the preceding claims, the enclosure ring (13) being fixed on the edge of the through opening and the support ring (14) being fitted into the enclosure ring by sealingly fixing the hermetic protective sleeve (15) to the enclosure ring.

11. Glove box according to claim 10, the device being according to one of claims 8 and 9, the box comprising a spacer (28) adapted to be assembled, preferably by a bayonet type fixing, with the support ring (25) and the base (22) so as to maintain a radial spacing, preferably constant, between the support ring and the base.

12. Glove box according to claim 10 or 11, comprising an insertion sleeve (31) for guiding the shutter (21) in translation during its insertion into the hermetic protective sleeve (15), preferably the insertion sleeve being configured to keep the shutter concentric with the support ring (14).

13. Glove box according to claim 12, the insertion sleeve comprising a mechanism capable of exerting a pushing force on the shutter, preferably the mechanism transforming a rotational movement of a steering wheel into a translational movement.

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