Swinging access restriction barrier with anti-lift device

Abstract

The invention relates to a pivoting barrier (2) comprising a post (4) and a pivoting arm (6) mounted on the post (4), the pivoting barrier (2) comprising a locking mechanism for the pivoting arm (6) on the post (4) and comprising: - an annular bead (8) carried on the post (4), the annular bead (8) comprising at least one through-hole (10), and - at least one locking pin (12) carried by the pivoting arm (6) and passing through the through-hole (10) when the pivoting arm (6) is mounted on the post (4), the locking mechanism further comprising: - a locking lug (14) movable between a position of the through-hole (10) and an unlocking position of the through-hole (10), and - a latch (22) movable between the locking position of the locking lug (14) and an unlocking position of the locking lug (14). Figure 1

Description

Title of the invention: Pivoting access restriction barrier with anti-lifting device

[0001] The invention relates to a device for limiting access to an area, for example to a path, of the type pivoting barrier.

[0002] Such a barrier is typically installed at the entrance to an area whose access is to be regulated, for example, a fire lane. It pivots between a closed position, in which it prevents access to the area, and an open position, in which it allows access to the area. In the closed position, the pivoting barrier is locked by means of a locking mechanism, typically including a lock.

[0003] Such a barrier conventionally comprises a post intended to be fixed to the ground, a pivoting arm that pivots on the post, and a locking mechanism for the pivoting arm on the post. The pivoting arm locking mechanism comprises a locking pin fixed to the pivoting arm and an annular bead disposed at the free end of the post and comprising an opening through the annular bead, the opening being intended to be passed through by the locking pin when the pivoting arm is mounted on the post.

[0004] When mounting the pivoting arm on the pillar already fixed to the ground, the pivoting arm is positioned and slid around the pillar so that the locking pin passes through the through-hole. The pivoting arm reaches its stop against the pillar when the locking pin has fully passed through the through-hole. It is then possible to pivot the pivoting arm to place it in the closed and locked position.

[0005] When the barrier is unlocked, the pivoting arm can be moved to place the pivoting barrier in the open position. During this movement, the locking pin passes in front of the through-hole. It would then be possible to lift the pivoting arm when the locking pin is aligned with the through-hole, for example, to dismantle the pivoting arm, even by a person not authorized to perform such dismantling.

[0006] Such a lifting can at least allow the release of an unlocking key which is normally blocked in the swing gate until the gate is closed and relocked, which therefore goes against a normal operating principle of the swing gate.

[0007] The invention aims to provide a pivoting barrier restricting access to an area, preventing the latter from being lifted or even dismantled by an unauthorized person.

[0008] To this end, the invention relates to a pivoting barrier for restricting access to an area, comprising a pillar intended to be fixed to the ground and a pivoting arm mounted pivotally on the pillar, the pivoting barrier comprising a mechanism for locking the pivoting arm in the position mounted on the pillar and comprising: - an annular ridge carried on the pillar, the annular ridge comprising at least one through hole, and - at least one locking pin carried by the pivoting arm and passing through the through-hole when the pivoting arm is mounted on the pillar, the locking mechanism further comprising: - a movable locking lug between a locking position of the pivoting arm in which it blocks the through-hole and an unlocking position of the pivoting arm in which it releases the through-hole, and - a movable lock between the locking position of the locking lug in which it prevents any movement of the locking lug and an unlocking position of the locking lug in which it allows movement of the locking lug.

[0009] Thus, a structure is obtained in which the locking pin always interacts with the annular bead to prevent the pivoting arm from being lifted. Crucially, if an unauthorized person attempts to lift the pivoting arm by aligning the locking pin with the through-hole, the pin cannot pass through the through-hole because the latter is blocked by the locking lug, which is itself held in the locked position by the latch. It is therefore necessary to flip the latch to the unlocked position to allow the lug to move and thus lift the pivoting arm. Such lifting is therefore only possible for an authorized person who has previously placed the latch in the unlocked position of the locking lug.

[0010] Depending on other optional features of the swing gate, taken alone or in combination: - the locking lug is rotationally mobile in a vertical plane, the lock being rotationally mobile in a horizontal plane so as to extend above the locking lug when it is in the locking position of the locking lug, - the locking cleat is movable between a locking position corresponding to a horizontal position of the locking cleat, the locking cleat being movable in upward rotation with a rotation of an angle less than or equal to 90°, - The locking cleat includes a stop preventing rotation beyond an angle of 90°. - the lock comprises a main orifice mounted on a rotation axis and a secondary orifice forming a guide groove for a second pin, each of the locking and unlocking positions of the locking lug corresponding to the second pin coming against one end of the secondary orifice, - the lock includes at least one notch arranged and sized to allow movement of the lock between the locking position of the locking pin and the unlocking position of the locking pin by interaction between the notch and a lock activation tool, - the locking cleat and the lock are supported by an intermediate structure positioned between the pillar and the pivoting arm, - the intermediate piece is formed by a technical block and a block support, the locking cleat and the lock being carried by the block support fixed to the pillar, - the lock is positioned between the block support and the technical block, and - the annular ridge includes several through-holes, the holes through holes not closed by the locking cleat comprising a sealing element extending into each through hole, the sealing element preferably being formed of a third pin. Brief description of the figures

[0011] The invention will be better understood upon reading the following description, given solely by way of example and made with reference to the accompanying drawings in which:

[0012] [Fig-1] is a perspective view of a pivoting barrier according to the invention,

[0013] [Fig.2] is an exploded view of a pivoting barrier according to the invention,

[0014] [Fig.3] is a perspective view of a locking cleat according to the invention,

[0015] [Fig.4] is a perspective view of a lock according to the invention,

[0016] [Fig.5] is a perspective view of a pillar according to the invention,

[0017] [Fig.6] is a perspective view of a pivoting barrier according to the invention, the cleat with the locking mechanism in the pivoting arm locking position and the lock in the locking cleat locking position,

[0018] [Fig.7] is a perspective view of a pivoting barrier according to the invention, the cleat with the locking mechanism in the pivoting arm locking position, the lock in the locking cleat unlocking position, and the pivoting arm mounted on the pillar,

[0019] [Fig.8] is a side view of a pivoting barrier according to the invention, the lock being in the unlocking position of the locking lug, the locking lug being in an intermediate position between a locked position and an unlocked position of the pivoting arm,

[0020] [Fig.9] is a side view of a pivoting barrier according to the invention, the cleat of with the pivoting arm in the locking position, the lock in the unlocking position of the locking lug, and the pivoting arm removed from the pillar,

[0021] [Fig. 10] is a perspective view of a pivoting barrier according to the invention, the locking lug being in the unlocking position of the pivoting arm, the lock being in the locking position of the locking lug,

[0022] [Fig. 11] is a perspective view of a pivoting barrier comprising a third pin, and

[0023] [Fig. 12] is a perspective view of part of a pivoting barrier according to the invention during assembly. Detailed description

[0024] Reference is now made to [Fig. 1] illustrating a pivoting barrier 2. As explained above, this type of barrier makes it possible to restrict access to a reserved area, for example a dedicated lane, to authorized persons. It is mainly composed of a post 4 intended to be fixed to the ground, for example sealed to the ground, and a pivoting arm 6 mounted to rotate freely on the post so as to extend around it and to be able to be moved between a position in which it restricts access to a reserved area and a position in which it allows access to said area.

[0025] The pillar 4, shown alone in [Fig. 5], comprises at least one annular bead 8, for example with a thickness of approximately 10 mm, here located at a free upper end of the pillar 4, belonging to a locking mechanism and helping to prevent the pivoting arm 6, which is positioned in a significant number of positions on the pillar 4, from lifting. The annular bead 8 comprises at least one through hole 10. It also includes fixing holes 7 for a block support 32, which will be described later. The pillar 4 may, for example, be made of steel.

[0026] The pivoting arm 6 includes a locking pin 12 mounted on the pivoting arm 6 and extending towards the pillar 4 so as to pass through the through-hole when the pivoting arm 6 is mounted on the pillar 4. The term "locking pin" means any protrusion projecting from the pivoting arm 6 and sized to pass through the through-hole 10 and to contribute to retaining the pivoting arm 6 mounted on the pillar 4. Once the locking pin 12 has passed through the through-hole 10, it prevents the pivoting arm 6 from lifting by abutting against the underside of the annular bead 8. Lifting is only possible if the locking pin 12 passes through the through-hole 10 again.

[0027] The locking pin 12 can be made of steel and be a round section element with a diameter of approximately 16 mm. It can be welded to the pivoting arm 6 or assembled using any other conventional method known to a person skilled in the art.

[0028] The locking mechanism also includes a locking pin 14 movable between a locking position of the pivoting arm 6, in which it closes the through-hole 10, and an unlocking position of the pivoting arm 6, in which it releases the through-hole 10. In the illustrated example, the locking pin 14 is mounted to rotate about a first pin 16, for example, a spring pin. It can be formed, as shown in [Fig. 3], by a straight body 18 and a head 20 projecting from the straight body 18 so as to extend into the through-hole when the locking pin 14 is in the locking position. As will be described later, the movement of the locking pin 14 between the locking and unlocking positions is effected by forces exerted on it by other elements of the locking mechanism.

[0029] The locking cleat 14 can be a flat element, for example made of steel. Its thickness can be approximately 6 mm.

[0030] Advantageously, the locking lug 14 is rotationally mobile about a horizontal axis of rotation, allowing it to pivot in a vertical plane. It is possible to prevent the lug from pivoting beyond the vertical from a locking position corresponding to a horizontal position, for example, by providing a stop 21 at the base of the straight body 18 opposite the head 20, preventing rotation greater than 90° from the horizontal position. The aim is to allow the lug to return to the locking position by gravity alone, without the need for any return mechanisms (although these could still be considered).

[0031] The locking mechanism further includes a movable lock 22 between the locking position of the locking lug 14 in which it prevents any movement of the locking lug 14 and an unlocking position of the locking lug 14 in which it allows movement of the locking lug 14. It is therefore understood that the lock 22, depending on its position, allows or prevents the movements of the locking lug 14 and therefore the passage of the locking pin 12 through the through orifice 10 so as to allow or not a lifting of the pivoting arm 6.

[0032] The lock 22 can be a flat element, for example with a thickness of about 10 mm.

[0033] The lock 22 illustrated in the example in the figures comprises, as can be seen in [Fig.4]: - A main body 24. - A main orifice 26 provided in the main body 24 and able to collaborate with an axis of rotation described subsequently. - A secondary orifice 28 formed in the main body 24, providing stops for the movement of the lock. In other words, a second pin forming a guide pin and described later can move in the secondary orifice 28 until it is stopped at one end or the other of the latter, each stop corresponding to one of the two positions of the lock 22 described above. - At least one notch 30, here two notches 30, arranged on the lock 22 so as to allow, by interaction with an activation element of the lock 22, to move the lock 22 between the blocking position and the unlocking position of the locking tab 14.

[0034] The means provided at the level of the latch 22 may differ from those illustrated in the figures. Similarly, the means described above may be implemented alone or in combination with all or some of the other means. For example, the latch 22 might not include notches 30 but another system for actuating the latch 22. Likewise, the guidance and stops against the end of the latch could be achieved by means other than through holes.

[0035] In the illustrated example, the lock 22 and the locking lug 14 are carried by a block support 32. The latter carries the first pin 16 on which the locking lug 14 is pivotally mounted but also a second pin 34 (visible on [Fig.2]) intended to extend into the secondary orifice 28 so as to obtain the movement of the lock 22 of limited amplitude between two stops as described above.

[0036] The block support 32 also includes a number of lugs, including a shim 36 on which the lock 22 is mounted, in the example fitted onto the shim 36 which passes through the main orifice 26. The lock 22 is therefore arranged so that the main orifice 26 is traversed by the shim 36, and that the secondary orifice 28 is traversed by the second pin 34. The lock 22 is therefore rotationally movable around the shim 36 and between two extreme positions formed by stops of the second pin 34 in the secondary orifice 28.

[0037] It is important to note that it is not essential to use a block support to accommodate the lock 22 and the locking lug 14; it is only necessary that they be supported by a different element than the pivoting arm 6, since the latter carries the locking pin 12. The use of the block support 32 as the element receiving the lock 22 and the locking lug 14 is a consequence of its presence in receiving a technical block 38, a component interposed between the pillar 4 and the pivoting arm 6, here resting on the block support 32, and carrying additional functions for the pivoting barrier 2 (for example, the ability to switch the pivoting barrier 2 from an operating mode in which a key unlocking the pivoting barrier 2 can only be removed when the pivoting barrier 2 is closed to an operating mode in which it can be removed at any time) and / or information regarding the operation of the pivoting barrier 2. The block support 32 also includes support pads 40 allowing the positioning of the block 38. A component already present in an embodiment of the pivoting barrier 2 is therefore used to accommodate the elements enabling the implementation of the invention. The block support 32 and the technical block 38 are known and will not be described in detail here.

[0038] We will now describe the assembly process of the locking mechanism in the example illustrated in support of [Fig.2].

[0039] The block support 32 is first mounted on the pillar 4. It is noted here that, obviously, the support block 32 is dimensioned so as to be narrower than the annular bead 8 so that the through orifice 10 is not obstructed by the block support 32.

[0040] Once the block support is positioned, it is possible to: - Place the lock 22 on a shim 36 (i.e. on the upper face of the block support 32), with the second pin 34 extending inside the secondary hole 28. The lock 22 is therefore mobile in rotation in a horizontal plane. - Position the locking pin 14 on the block support 32, allowing it to rotate around the first pin 16 (the latter being positioned in a hole provided for this purpose in the block support 32, a hole made using a dedicated drilling template), here on a lateral face (i.e., on the edge) of the block support 32. This results in the rotation of the locking pin 14 in a vertical plane. The first pin 16 is positioned on the block support 32 so that, taking into account the dimensions of the locking pin 14, its head 20 extends into the through hole 10 when the locking pin 14 is in the locked position.

[0041] It is important to note that it is possible to mount the lock 22 and the locking cleat 14 on the block support 32 before placing the latter on the pillar 4, or to place only the first and second pins 16 and 34 on the block support 32 before placing the latter on the pillar 4.

[0042] The technical block 38 can then be brought onto the block support 32 and fixed to the latter, for example by screwing. An axle / bearing can then be mounted in a dedicated housing on the technical block 38.

[0043] We will now describe the operating principle of the locking mechanism of the pivoting barrier 2 according to the invention with the help of figures 6 to 10.

[0044] When the pivoting arm 6 is mounted on the pillar 4, as can be seen in figures 6 to 9, the locking pin 12 is placed under the annular bead 8 and comes to rest against the latter in the event of an attempt to lift the pivoting arm 6.

[0045] When the locking pin 12 is aligned with the through hole 10 and a user tries to lift the pivoting arm 6, two scenarios must be distinguished: - If the locking lug 14 and the lock 22 are in the locked position, as illustrated in [Fig. 6], the lock 22 extends above the locking lug 14 (with its second pin 34 abutting one end of the secondary orifice 28) and cannot be lifted, if only because of the presence of the block 38 fixed to the block support 32 and therefore to the pillar 4. In the event of an attempt to lift it, the locking pin 12 comes to rest against the head 20 of the locking lug 14 which extends into the through orifice 10. The locking lug 14 cannot be lifted, due to the presence of the lock 22 extending above it and not being able to be moved vertically. In such a case, and even if the locking pin 12 and the through hole 10 are aligned, it is not possible to lift or even dismantle the pivoting arm 6. - As shown in Figures 6 and 7, if lifting or even dismantling the pivoting arm 6 is desired, it is possible to move the lock 22 from the locking position of the locking tab 14 to the unlocking position of the locking tab 14. This can be done using a pin punch 42 or any other tool that allows the lock 22 to be moved. The movement is carried out by inserting the pin punch 42 into an opening provided in the pivoting arm 6 to access the lock 22 and placing the pin punch in one of the notches 30, specifically in the one that allows the movement of the lock 22. The lock 22 is moved until it is against the second end of the secondary opening 28. At this point, the lock 22 is in the unlocking position of the locking tab 14, no longer extending over it.In such a case, and if the locking pin 12 is aligned with the through-hole 10, an attempt to lift the pivoting arm 6 results in the locking pin 12 being placed against the locking lug 14. By continuing the vertical lifting movement 48, the locking pin lifts the locking lug 14 (rotational movement 50 of the locking lug 14 illustrated in [Fig. 8]) until it completely passes through the through-hole 10 (movement visible in [Fig. 8]). The pivoting arm 6 is then released and can be removed from the pillar 4. Once the locking pin 12 has passed through, the locking lug 14 returns to its locked position (result visible in [Fig. 9]). As described above, it is possible that this return is only achieved by gravity. Alternatively, retraction means could be implemented.

[0046] When mounting the pivoting arm 6 on the pillar 4, it is necessary to pass the locking pin 12 through the through hole 10. To do this, it is possible to lift the locking tab 14 to position it so that a movement of the lock 22 from the unlocking position of the locking tab 14 to the locking position of the latter (rotation movement 52 of the lock 22 illustrated in [Fig. 10]) causes the lock 22 to extend under the locking tab 14 and not over it (as can be seen in [Fig. 10]). Thus, the locking lug 14 is held in the unlocking position of the pivoting arm 6 by the lock 22 itself in the locking position of the locking lug 14. The through hole 10 is therefore free and it is possible to pass the locking pin 12 through it to mount the pivoting arm 6 on the pillar 4.

[0047] Once the pivoting arm 6 is mounted on the pillar 4, it is sufficient to tilt the lock 22 from the locking position of the locking lug 14 to the unlocking position of the locking lug 14 to allow the latter to return, here under the effect of gravity, to the position of locking the pivoting arm 6, then to move the lock 22 from the unlocking position of the locking lug 14 to the locking position of the locking lug 14 to prevent any lifting of the pivoting arm 6. All movements of the lock 22 are made possible by the interaction of a tool of the type of the pin punch 42 with the notches 30, each notch allowing in particular by its shape and its direction of extension the movements of the lock 22 described above.

[0048] As can be seen in the figures, the annular bead 8 can include several through holes 10. The locking pin 12 can, in the case where the pivoting arm 6 has a deflection of an angle greater than 90°, to the left or to the right, pass in front of the two through holes 10. In order to block access to the second through hole 10 (i.e. the one not interacting with the locking pin 14), it is possible, as can be seen in [Fig. 11], to provide a third pin 46, for example with a diameter of approximately 7 mm and protruding into the through hole 10 by approximately 10 mm, in order to block the passage formed by this through hole 10.

[0049] Figure 12 illustrates a configuration in which a first through-hole 10 is closed by the locking tab 14 according to the locking mechanism of the invention. The second through-hole 10 is closed by the third pin 46, which is disposed in this through-hole 10 on Figure 12. The third pin 46 is placed in a hole made using a dedicated drilling template. List of references

[0050] 2: pivoting barrier

[0051] 4: pillar

[0052] 6: pivoting arm

[0053] 7: fixing holes

[0054]

[0055]

[0056]

[0057]

[0058]

[0059]

[0060]

[0061]

[0062]

[0063]

[0064]

[0065]

[0066]

[0067]

[0068]

[0069]

[0070]

[0071]

[0072]

[0073]

[0074]

[0075]

[0076] 8: Annular bead 10: Through holes 12: Locking pin 14: Locking lug 16: First pin 18: Straight body 20: Head 21: Stop 22: Lock 24: Main body 26: Main hole 28: Secondary hole 30: Notches 32: Block support 34: Second pin 36: Shim block 38: Technical block 40: Support blocks 42: Pin punch 46: Third pin 48: Vertical movement 50: Rotation movement of the locking lug 52: Rotation movement of the lock

Claims

Demands

1. A pivoting barrier (2) for restricting access to an area comprising a post (4) intended to be fixed to the ground and a pivoting arm (6) pivotally mounted on the post (4), the pivoting barrier (2) comprising a locking mechanism for the pivoting arm (6) in the mounted position on the post (4) and comprising: - an annular bead (8) carried on the post (4), the annular bead (8) comprising at least one through-hole (10), and - at least one locking pin (12) carried by the pivoting arm (6) and passing through the through-hole (10) when the pivoting arm (6) is mounted on the post (4), characterized in that the locking mechanism further comprises: - a locking lug (14) movable between a locking position of the pivoting arm (6) in which it closes the through-hole (10) and an unlocking position of the pivoting arm (6) in which it releases the through-hole (10),and - a movable lock (22) between the locking position of the locking lug (14) in which it prevents any movement of the locking lug (14) and an unlocking position of the locking lug (14) in which it allows movement of the locking lug (14).

2. A pivoting barrier (2) according to claim 1, wherein the locking lug (14) is rotationally movable in a vertical plane, the lock (22) being rotationally movable in a horizontal plane so as to extend over the locking lug (14) when it is in the locking position of the locking lug (14).

3. A pivoting barrier (2) according to claim 2, wherein the locking lug (14) is movable between a locking position corresponding to a horizontal position of the locking lug (14), the locking lug (14) being movable in upward rotation with a rotation of an angle less than or equal to 90°.

4. Swivel barrier (2) according to claim 3, wherein the locking cleat (14) includes a stop (21) preventing rotation by an angle greater than 90°.

5. A pivoting barrier (2) according to any one of the preceding claims, wherein the lock (22) comprises a main orifice (26) mounted on a rotation axis and a secondary orifice (28) forming a guide groove for a second pin (34), each of the locking and unlocking positions of the locking lug (14) corresponding to the second pin (34) coming against a butt against one end of the secondary orifice.

6. Pivoting barrier (2) according to any one of the preceding claims, wherein the lock (22) comprises at least one notch (30) disposed and dimensioned to permit movement of the lock (22) between the locking position of the locking lug (14) and the unlocking position of the locking lug (14) by interaction between the notch (30) and a lock (22) activation tool.

7. A pivoting barrier (2) according to any one of the preceding claims, wherein the locking cleat (14) and the lock (22) are carried by an intermediate structure disposed between the pillar (4) and the pivoting arm (6).

8. Pivoting barrier (2) according to claim 7, wherein the intermediate piece is formed by a technical block (38) and a block support (32), the locking cleat (14) and the lock (22) being carried by the block support (32) fixed to the pillar (4).

9. Pivoting barrier (2) according to claim 8, wherein the lock (22) is disposed between the block support (32) and the technical block (38).

10. Pivoting barrier (2) according to any one of the preceding claims, wherein the annular bead (8) comprises several through holes (10), the through holes (10) not closed by the locking cleat (14) comprising a closing element extending into each through hole (10), the closing element preferably being formed of a third pin (46).