FR3129968A1 - Passage obstruction device and associated access gate - Google Patents

Abstract

The invention relates to an access passage obstruction device which comprises: - a frame (50); - a first flap (52) movable between a deployed position, in which it extends at least partially across a first access passage, and a retracted position, in which it is disengaged from said first passage; - a second flap (54) movable between a deployed position, in which it extends at least partially across a second access passage, and a retracted position, in which it is disengaged from said second passage; and - an actuation system (56) configured to move at least one of the first flap (52) or the second flap (54) from the deployed position to the retracted position. The first shutter (52) and the second shutter (54) are mounted on the frame (50). Figure for abstract: Figure 3

Description

Passage obstruction device and associated access gate

The present invention relates to an obstruction device and an access gate comprising such an obstruction device. The present invention also relates to an access control device comprising such gates.

Pass gates are commonly used to control access to restricted areas, such as building interiors or transit systems. For example, access gates are used in land or air public transport and are found in particular in stations, metro stations or air terminals.

Such gates allow the filtering of users at the entrance and, if necessary, at the exit of these reserved areas, so as to limit access to said reserved areas to authorized users only. To this end, they include obstruction devices which create an inconvenience, or even a total impediment, to the movement of users to and/or from the reserved areas. The gates include at least one obstacle which is usually positioned in a deployed position, in which it extends across an access passage to the restricted area, and is moved into a retracted position away from the passage, by means of a motorized mechanical assembly, when an authorized user presents himself at the entrance to the passage.

There are several types of obstacles. By way of example, the obstacle is formed by a tilting leaf (known as a "flap") mounted to pivot with respect to a box about an axis parallel to the passage, the leaf being received in the box when it is in retracted position.

In order to maximize the pedestrian flow, it is usual to install several gates in the same corridor or the same space in order to increase the number of users who can pass simultaneously.

To allow the installation of several gates side by side for a limited floor area, while maintaining sufficient pedestrian passage, it is known to arrange in the same box two mechanical assemblies each actuating a leaf on each side of the box, in order to reduce the number of boxes required.

The two mechanical assemblies are arranged one behind the other, according to the direction of the passage, in order to reduce the width of the box almost to the width of a single mechanical assembly.

However, such a solution has drawbacks. Indeed, such a juxtaposition in tandem of two mechanical assemblies makes it possible to minimize the width of the box, but this is done to the detriment of its length. In areas where several flows of users intersect, the movement of users is made more difficult. In addition, the installation of such gates requires a large floor area.

An objective of the present invention is to reduce the size of access gates to a reserved area.

To this end, the subject of the invention is an access passage obstruction device comprising:

- a frame extending substantially in an elevation direction and having a front face and a rear face;

- a first flap movable between a deployed position, in which it extends at least partially across a first access passage, and a retracted position, in which it is disengaged from said first passage;

- a second flap movable between a deployed position, in which it extends at least partially across a second access passage, and a retracted position, in which it is disengaged from said second passage, and

- an actuation system configured to move at least one of the first flap or the second flap from the deployed position to the retracted position,

the first shutter and the second shutter being mounted on the frame.

The use of a single frame on which two shutters are mounted and the system for actuating these two shutters makes it possible to reduce the size of the obstruction device, while retaining the possibility of blocking access from both sides of the door. a box. In addition, the number of parts is reduced compared to a system comprising two mechanical assemblies each mounted on a respective frame, which reduces the cost and weight of the assembly.

According to particular embodiments of the invention, the obstruction device has one or more of the following characteristics, taken separately or in any technically possible combination(s):

- the chassis comprises a base and a frame projecting from the base in the direction of elevation, the chassis having an axis of symmetry along a central axis parallel to the direction of elevation;

- Each shutter comprises a leaf pivotally mounted relative to the frame;

- the actuation system comprises a first device for driving the first shutter; and a second drive device for the second shutter, each drive device comprising a respective motor assembly, each motor assembly comprising an output shaft and a motor configured to drive said output shaft;

- the frame having an axis of symmetry along a central axis parallel to the direction of elevation, the first drive device and the second drive device are mounted on the frame symmetrically with respect to each other around the 'axis of symmetry ;

- the first component and at least part of the motor assembly of the second drive device extend from the side of the front face of the chassis, and the second component and at least part of the motor assembly of the first device drive extend from the side of the rear face of the chassis;

- the motors of the first device and second drive device are mounted side by side, so as to define a plane normal to the output shafts of the first device and second drive device, the motors of the first device and second device d training being in said normal plane;

- each drive device comprises a transmission support secured to the associated component and to the output shaft of the motor assembly associated with said component;

- the transmission support of the first flap has an abutment surface configured to bear against the motor assembly of the second drive device when the first flap is in the retracted position and/or the transmission support of the second flap has a surface of abutment configured to bear against the motor assembly of the first drive device when the second flap is in the retracted position.

The invention also relates to an access gate comprising a box delimiting an interior volume and able to at least partially delimit a circulation passage, and an obstruction device of the aforementioned type, the obstruction device being at least in part housed in the interior volume of the box.

The gate according to the invention thus has a box having a reduced length, allowing more flexibility in its positioning, more ease for the movement of users, and better overall aesthetics.

Other characteristics and advantages of the invention will appear on reading the following description, given solely by way of example and made with reference to the appended drawings, in which:

there is a schematic front view of an access system comprising a plurality of access control devices;

there East a schematic side view of a gate of one of the access control devices of the , the gate comprising an obstruction device according to the invention, the obstruction device comprising a frame and shutters,

there is a schematic perspective view of the obstruction device of the , the flaps here being in the deployed position,

there is a schematic perspective view of the obstruction device of the , the flaps here being in the retracted position,

there is a schematic perspective view of the frame of the obstruction device of the .

An access control system 10 is represented on the .

The access control system 10 is intended to control the entry of users into a reserved area 12. Alternatively, the access control system 10 is intended to exclusively control the exit, or the entrance and the exit of users in the reserved area 12.

For this purpose, the access control system 10 comprises a plurality of control devices 20A, 20B juxtaposed to each other so as to isolate the reserved zone 12 from a free zone 14 (visible on the ), any user passing from the reserved zone 12 to the free zone 14, and/or from the free zone 14 to the reserved zone 12, having to take a pedestrian passage 22 specific to one of the control devices 20A, 20B.

The reserved area 12 is typically a building interior or a public transport network, such as a train, metro or tram station. Access to reserved area 12 is reserved for holders of a valid access pass.

Each control device 20A, 20B is adapted to control the entry into and/or the exit from the reserved area 12 of users using the passage 22 specific to the control device 20A, 20B.

Each passage 22 extends in length in a main direction X of passage, corresponding to a direction of passenger circulation through said passage 22, and in width in a secondary direction Y, substantially perpendicular to the main direction X.

Each passage 22 is suitable for the passage of a pedestrian, preferably a pedestrian in a wheelchair, and his luggage, preferably a bicycle, but not a car. To this end, each passage 22 typically has a width of between 50 cm and 90 cm, in particular a width of between 50 cm and 60 cm for simple passages suitable for the passage of a single pedestrian and a width of between 80 and 90 cm. for wide passageways suitable for wheelchairs and bulky luggage.

Each control device 20A, 20B comprises two gates 24 arranged on either side, in the secondary direction Y, of the passage 22 specific to the control device 20A, 20B.

Each control device 20A, 20B further comprises at least one controller 26 of a right of access to passage 22.

The extension of each passage 22 in the secondary direction Y is thus delimited by a first gate 24, located to the left of passage 22, and a second gate 24, located to the right of passage 22.

It will be understood that a given gate 24 is likely to belong to two adjacent control devices 20A, 20B.

For example, as shown in the , the access system 10 comprises a first control device 20A (located on the left on the ), and a second control device 20B (located on the right on the ), each associated with a respective passage 22. Each control device 20A, 20B comprises a first door 24, located to the left of the associated passage 22, and a second door 24, located to the right of the associated passage 22. Thus, the second door 24 of the first control device 20A corresponds to the first door 24 of the second control device 20B.

Preferably, the gates 24 are identical. A single gate 24 will therefore be described in detail.

Each gate 24 comprises a box 30 and an obstruction device 32.

Preferably, as shown in , the boxes 30 of the gates 24 of the system 10 are installed parallel to each other and delimit the width of the passage 22 associated with the control device 20A, 20B in the secondary direction Y.

Each box 30 extends in length in a longitudinal direction L, in width in a transverse direction T, substantially perpendicular to the longitudinal direction L, and in height in a direction of elevation Z substantially perpendicular to the longitudinal and transverse directions L, T .

The longitudinal direction L and the transverse direction T are respectively parallel to the main direction X and to the secondary direction Y when the gate 24 is installed to control access to the reserved area 12.

Each box 30 typically has a length Lc of between 1 m and 2 m, a width lc of between 27 cm and 35 cm, and a height hc of between 85 cm and 110 cm.

Each box 30 defines an interior volume delimited by a box 36. The box 36 is for example formed of metal walls assembled together, for example by welding, riveting or bolting.

The box 30 is divided into a central compartment 40 and two side compartments 42 arranged on either side of the central compartment 40 in the longitudinal direction L.

The central compartment 40 is configured to receive the obstruction device 32, as will be described later.

Each side compartment 42 is configured to receive means for supplying and/or controlling gate 24 (not shown), such as electrical supply means, and at least part of controller 26.

As seen in Figures 2 to 4, the obstruction device 32 comprises a frame 50, a first flap 52, a second flap 54 and an actuation system 56 of the first and second flaps 52, 54. The first flap 52 and the second flap 54 are both mounted on the frame 50.

The obstruction device 32 is at least partly housed in the interior volume of the box 30. In particular, the frame 50 is arranged in the interior volume of the central compartment 40.

Chassis 50 is shown alone on the .

The frame 50 comprises a base 60 and a frame 62 projecting from the base 60 in the elevation direction Z.

The base 60 is, for example, a plate 64 of substantially rectangular shape. For example, plate 64 is made of metal, in particular steel.

The plate 64 is assembled to the box 36 via a support 640 fixed to the box 36. The support 640 is for example formed of metal crosspieces.

Alternatively, the plate 64 is directly attached to the box 36.

The plate 64 has openings 65 allowing the fixing of the frame 50 inside the box 30, for example by means of rivets (not shown). Advantageously, said openings 65 are oblong in shape so as to facilitate the positioning of the frame 50.

The frame 62 is formed of a sheet 66 fixed to the base 60.

Advantageously, the sheet 66 is made of metal, in particular steel.

The sheet 66 is for example fixed to the base by welding.

As a variant, the sheet 66 is fixed to the base by other means, in particular by gluing or by interlocking by means of a system of tenons and mortises.

Alternatively, the frame 62 is integral with the base 60.

The frame 62 has a front face 67 and a rear face 68. The terms "front" and "rear" here do not predict the direction in which the frame 50 will be installed in the box 30, nor the direction of movement of the users in relation to said box 30. In the example of the , the front face 67 is on the right and the rear face 68 on the left, so that a user crossing the passage 22 on arriving from the free zone 14 is on the side of the front face 67. However, the frame 62 could be arranged in the other direction.

Subsequently, the terms “front” and “rear” will be used with reference to said faces 67, 68.

In the example shown in Figures 3 and 4, the sheet 66 comprises a central part 70 and two lateral flanges 72 projecting from said central part 70, respectively towards the front of the frame 62 and towards the rear of the frame 62.

The central part 70 has a substantially rectangular shape with a thickness e measured between the front face 67 and the rear face 68 of between 4 and 6 mm, of length Lb measured in the direction of elevation Z of between 40 cm and 50 cm and lb width measured in the transverse direction T between 25 cm and 27 cm.

In the example shown in Figures 3 to 5, the central part 70 has two through openings 74, the use of which will be described later.

The side wings 72 serve for example as reinforcement for the frame 62, of which they reinforce the rigidity. The side wings 72 are for example obtained by bending the sheet 66.

Preferably, as shown in Figures 2 to 5, the frame 62 further comprises reinforcing ribs 76, fixed to the side wings 72 and / or to the central part 70.

Advantageously, the frame 50 has an axis of symmetry S extending parallel to the elevation direction Z and crossing the frame 62 in the middle.

The frame 62 has for example a cross section in I, H or S according to a plane perpendicular to the elevation direction Z.

Such a shape facilitates the installation of the frame 50, since it is thus possible to equip the frame 50 in an identical manner regardless of the face 67, 68 chosen.

The two flaps 52, 54 are mounted on the frame 50.

Advantageously, as shown in Figures 2 to 4, the two flaps 52, 54 are identical.

In the example shown in Figures 2 to 4, the first flap 52 is mounted on the front of the frame 50 and the second flap 54 is mounted on the rear of the frame 50. However, as indicated above, it would return the same to mount the first flap 52 on the rear of the frame 50 and the second flap 54 on the front of the frame 50.

Each flap 52, 54 is movable between a deployed position (visible in FIGS. 1 to 3), in which it extends at least partially across a given passage 22, and a retracted position (visible on the ), in which it is released from said passage 22. Thus, as visible on the , the first flap 52 of the left door 24 of the first control device 20A and the second flap 54 of the right door 24 are both in the deployed position and extend at least partially across the passage 22 associated with said first control device. control 20A, preventing a user from crossing said passage 22. Said first flap 52 and said second flap 54 then respectively form a left obstacle and a right obstacle of the first access control device 20A.

On the , the two flaps 52, 54 are in the retracted position. However, within a given obstruction device 32, the retracted or deployed position of the first flap 52 is independent of the retracted or deployed position of the second flap 54, and vice versa.

Each flap 52, 54 is capable of tilting by rotation around a respective axis of rotation R1, R2 extending perpendicularly to the frame 50. In normal operating mode, when the obstruction device 32 is installed in the box 30, said axes R1, R2 extend parallel to the longitudinal direction L of the gate 24.

In the retracted position, the flap 52, 54 is received in the box 30, more particularly in the central compartment 40. In the deployed position, the flap 52, 54 extends at least partly outside the box 30. The compartment central 40 has for this purpose two passage openings (not shown) of the flaps 52, 54 made in the trunk 36, said openings being able to let the flaps 52, 54 pass during their deployment.

Each shutter 52, 54 comprises a tilting leaf 80, that is to say a leaf mounted to pivot relative to the frame 50 around the associated axis of rotation R1, R2.

Each leaf 80 includes in particular a first section 84, for example in the form of a disk sector. For example, the first section 84 defines a disc sector with an angle between 30 and 40°.

Advantageously, for so-called "wide" gates, at least one leaf 80 also comprises a second section (not shown), which is for example also in the shape of a disc sector, movable relative to the first section 84 between a retracted position at the inside the first section 84, when the leaf 80 is in the retracted position, and a deployed position outside the first section 84, when the leaf 80 is in the deployed position. Such a leaf makes it possible to close a passage 22 of greater width, and is therefore particularly useful for wide passages, for example those intended for people with reduced mobility, in particular people in wheelchairs, people transporting luggage or a bicycle. , or people accompanied by children, especially in pushchairs.

In the deployed position, each leaf 80 is configured to partially block a passage 22 with which it is associated. Each leaf 80 then extends in the transverse direction T (which corresponds to the secondary direction Y) over a distance d of between 40% and 50% of the width of the associated passage 22.

The actuation system 56 is capable of moving at least one of the first flap 52 or the second flap 54 from the deployed position to the retracted position. Preferably, the actuation system 56 is capable of causing the first flap 52 and the second flap 54 to pass independently of each other from the deployed position to the retracted position.

The actuation system 56 comprises a first device 92 for driving the first flap 52 and a second device 94 for driving the second flap 54.

Each drive device 92, 94 comprises a motor assembly 96, suitable for moving the flap 52, 54 with which it is associated between its retracted and deployed positions, and a transmission support 98 integral with the associated flap 52, 54.

The first drive device 92 and the second drive device 94 are mounted on the frame 50, advantageously head to tail. This means that the first drive device 92 and the second drive device 94 are mounted symmetrically on the frame 50 around the axis of symmetry S.

Preferably, as shown in Figures 2 to 4, the first drive device 92 is identical to the second drive device 94.

Each motor assembly 96 includes an output shaft 100 and a motor 102 configured to drive the output shaft 100 in rotation about its axis, the output shaft 100 being kinematically linked to the transmission support 98 so that the rotation of the output shaft 100 around its axis causes the movement of the transmission support 98 and therefore of the associated flap 52, 54, around its associated axis of rotation R1, R2.

Each motor 102 is mounted on the frame 62, more precisely on the central part 70. Advantageously, as represented in FIGS. 2 to 4, each motor 102 associated with a given shutter 52, 54 is mounted on the face of the frame 62 opposite to that on which said flap 52, 54 is mounted.

For example, as shown in Figures 2 to 4, the first flap 52 and the motor 102 of the second drive device 94 are mounted on the front face 67 of the frame 62, and the second flap 54 and the motor 102 of the first device 92 drive are mounted on the rear face 68 of the frame 62.

The output shaft 100 of each motor assembly 96 extends through one of the through openings 74 of the frame 62.

Advantageously, the first drive device 92 and the second drive device 94 are mounted on the frame 50 in an overlapping manner. By this is meant that the motors 102 of the first device 92 and second drive device 94 are mounted side by side, so as to define a plane normal to the output shafts 100 of the drive devices 92, 94 which intersects at both the motor 102 of the first drive device 92 and the motor 102 of the drive device 94. By this is meant that the motor 102 of the first drive device 92 and the motor 102 of the drive device 94 are both in said normal plane.

The size of the shutter device 32 can thus be further reduced, the length occupied by the two motors 102 being less than the sum of the lengths of each motor 102.

The transmission support 98 is secured to the associated flap 52, 54 and to the output shaft 100 of the motor assembly 96 associated with said flap 52, 54.

Each support 98 comprises an arm 104 pivotally mounted relative to the frame 50 around the associated axis of rotation R1, R2. The rotation of the arm 104 around the associated axis of rotation R1, R2 is suitable for causing the leaf 80 to pivot.

Each arm 104 is mounted integral with the associated leaf 80. For example, each arm 104 is fixed to the associated leaf 80 by screwing by means of a fixing plate 106 partly received in a cavity made in the leaf 80.

Each arm 104 is for example made of metal, in particular steel or aluminum.

Preferably, each support 98 comprises at least one abutment surface 110, 112 capable of limiting the rotation of the flap 52, 54 in the deployed position and/or in the retracted position. The abutment surface 110, 112 comprises for example a pin 113, made for example of a plastic material, said pin 113 being intended to come into contact with a counterstop in the deployed position and/or in the retracted position.

Advantageously, as shown in Figures 3 and 4, the motor 102 acts as abutment.

In the example of Figures 3 and 4, each support 98 thus has a bottom abutment surface 110, intended to interrupt the travel of the associated flap 52, 54 when the latter passes from the retracted position to the deployed position. In other words, in the deployed position, the lower abutment surface 110 rests on the counterstop, here the motor 102, which prevents the rotation of the flap 52, 54 beyond the deployed position.

Each bottom abutment surface 110 is here mounted on a first lateral rib 114 made in one piece with the arm 104, and forming with said arm 104 a bracket.

In the example of Figures 3 and 4, each support 98 has a high abutment surface 112, intended to interrupt the stroke of the associated flap 52, 54 when the latter passes from the deployed position to the retracted position. In other words, in the retracted position, the upper abutment surface 112 rests on the counterstop, here the motor 102, which prevents the rotation of the flap 52, 54 beyond the retracted position.

Each upper abutment surface 112 is here mounted on a second lateral rib 115 integral with the arm 98.

The actuation system 56 is capable of receiving, from the controller 26, an instruction to open at least one of the shutters 52, 54 of the gate 24.

Preferably, the actuation system 56 is also configured to move at least one of the first flap 52 or the second flap 54 from the retracted position to the deployed position after a predefined period of time, typically included between 0.5 seconds and 1 second .

Each controller 26 of an access right is associated with a given control device 20A, 20B, and thus with a given passage 22.

Each controller 26 includes at least one recognition module 120 and one command module 122.

For example, the recognition module 120 is positioned at one end, along the longitudinal direction L, of the box 30 of one of the gates 24 of the control device 20A, 20B and is oriented so as to face a user presenting himself at the entrance to passage 22 associated with said control device 20A, 20B. In the example of the , the recognition module 120 associated with a given control device 20A, 20B is arranged on the box 30 of the gate 24 on the right of said control device 20A, 20B.

As a variant, each control device 20A, 20B comprises two controllers 26, each controller 26 comprising a recognition module 120 positioned at a respective end, in the longitudinal direction L, so as to allow passengers to pass in both directions.

In the case represented, each recognition module 120 is a reader. Conventionally, the recognition module 120 is configured to authorize the passage of a person when an access title, for example a transport title or a magnetic card, conferring a right of access is presented to the reader.

The recognition module 120 is able to send an access instruction to the control module 122 when the access title is recognized as valid by the recognition module 120.

The control module 122 is able to receive said access instruction and to transmit an opening instruction to at least one associated obstruction device 32.

Preferably, the control module 122 is configured to transmit an opening instruction to the obstruction devices 32 of the gates 24 of the associated control device 20A, 20B, more particularly to the drive device 92, 94 of the first shutter 52 of the first gate 24 and of the second flap 54 of the second gate 24, so as to cause said flaps 52, 54 to pass from the deployed position, in which they extended at least partially across the passage 22, to the retracted position, in which they are located away from said passage 22..

The operation of the access system 10 will now be described.

A user wishing to pass from the free zone 14 to the reserved zone 12 presents himself at the entrance to a passage 22 delimited by a first and a second gate 24. For example, as represented on the , the passage 22 is then closed off by the first flap 52 of the first gate 24 and by the second flap 54 of the second gate 24.

The user presents a valid access title to the recognition module 120 of the controller 26 of the control device 20A, 20B associated with said passage 22.

When the access title is recognized as being valid, the recognition module 120 sends an access instruction to the control module 122 which in turn transmits an opening instruction to the obstruction devices 32 associated with said passage 22, so as to control the passage of the flaps 52, 54 from the deployed position to the retracted position.

In particular, the control module 122 sends an opening setpoint for the first shutter 52 of the first gate 24 to the actuating system 56 of the obstruction device 32 of the first gate 24, and an opening setpoint for the second shutter 54 of the second gate 24 to the actuating system 56 of the obstruction device 32 of the second gate 24.

Said first and second flaps 52, 54 then pass from the deployed position to the retracted position. Passage 22 is then freed and the user can cross passage 22 to go to reserved area 12.

The flaps 52, 54 then return to the deployed position, when the user is presumed to have crossed the passage, this being advantageously determined using sensors and processing means of known type (not described here).

The control devices 20A, 20B according to the invention have many advantages. Each obstruction device 32 thus has a reduced size, thanks to its unique frame 50.

The length of each gate 24 is therefore reduced compared to a gate of the state of the art, without this reduction in length being made to the detriment of its width. The gate according to the invention thus has a box having a reduced length, allowing more flexibility in its positioning, more ease for the movement of users, and better overall aesthetics.

It is thus possible to install several control devices 20A, 20B side by side in a small space, while allowing easy movement of users.

In addition, the obstruction device 32 according to the invention requires a reduced number of parts, a single frame 50 being sufficient. The weight of the gate 24 is therefore reduced, as is its cost.

In addition, the frame 50 offers great flexibility and allows the obstruction device 32 to be easily adapted in the event that a single shutter 52, 54 is required. Indeed, in the case where the door 24 is for example against a wall, it is possible to easily remove the shutter from the side of the wall, as well as the drive device of said shutter, without significantly modifying the rest of the device. obstruction. A simple additional part can for example be added to the frame to play the role of abutment in place of the missing motor.

According to a variant not shown, at least one control device comprises a single gate, said gate being adapted to completely obstruct the passage associated with said control device. The closing device of said gate comprises, for example, a flap capable of extending across the associated passage over a sufficient distance to block the passage of a user.

Claims (10)

Obstruction device (32) of access passage (22) comprising:

• a frame (50) extending substantially in an elevation direction (Z) and having a front face (67) and a rear face (68);
• a first flap (52) movable between a deployed position, in which it extends at least partially across a first access passage (22), and a retracted position, in which it is disengaged from said first passage (22 );
• a second flap (54) movable between a deployed position, in which it extends at least partially across a second access passage (22), and a retracted position, in which it is disengaged from said second passage (22 ), And
• an actuation system (56) configured to move at least one of the first flap (52) or the second flap (54) from the deployed position to the retracted position,

the first shutter (52) and the second shutter (54) being mounted on the frame (50). An obstruction device (32) according to claim 1, wherein the frame (50) includes a base (60) and a frame (62) projecting from the base (60) in the direction of elevation (Z ), the frame (50) having an axis of symmetry (S) along a central axis parallel to the elevation direction (Z). Obstruction device (32) according to claim 1 or 2, in which each shutter (52, 54) comprises a leaf (80) pivotally mounted relative to the frame (50). Obstruction device (32) according to any one of the preceding claims, in which the actuation system (56) comprises:

• a first drive device (92) for the first flap (52); And
• a second drive device (94) for the second flap (54),

each drive device (92, 94) including a respective motor assembly (96), each motor assembly (96) including an output shaft (100) and a motor (102) configured to drive said output shaft (100). Obstruction device (32) according to claim 4, in which, the frame (50) having an axis of symmetry (S) along a central axis parallel to the direction of elevation (Z), the first device (92) d drive and the second drive device (94) are mounted on the frame (50) symmetrically with respect to each other around the axis of symmetry (S). Obstruction device (32) according to claim 4 or 5, in which the first flap (52) and at least a part of the motor assembly (96) of the second driving device (94) extend from the side of the front face (67) of the frame (50), and the second flap (54) and at least a part of the motor assembly (96) of the first drive device (92) extend from the side of the rear face (68) of the frame (50). An obstruction device (32) according to any one of claims 4 to 6, wherein the motors (102) of the first device (92) and second drive device (94) are mounted side-by-side, so defining a plane normal to the output shafts (100) of the first drive device (92) and second drive device (94), the motors (102) of the first drive device (92) and second drive device (94) being in said normal plane. Obstruction device (32) according to any one of claims 4 to 7, in which each drive device (92, 94) comprises a transmission support (98) integral with the associated flap (52, 54) and the output shaft (100) of the motor assembly (96) associated with said flap (52, 54). Obstruction device (32) according to claim 8, in which the transmission support (98) of the first flap (52) has an abutment surface (112) configured to bear against the motor assembly (96) of the second device. (94) when the first flap (52) is in the retracted position and/or the support (98) for transmitting the second flap (54) has an abutment surface (112) configured to bear against the motor assembly (96) of the first drive device (92) when the second flap (54) is in the retracted position. Access gate (24) comprising:

• a box (30) delimiting an interior volume and capable of delimiting at least part of a circulation passage (22), and
• an obstruction device (32) according to any one of claims 1 to 9, the obstruction device (32) being at least partly housed in the interior volume of the box (30).