FR3070999A1 - ANTIPANIC BAR FOR A DOOR - Google Patents

Abstract

The invention relates to an antipanic bar (150) comprising a bolt alternately taking a closed position and an open position, a movable slider and alternately taking a relaxed position and a supported position, a rod (208) transmitting the movement of the slider to the bolt, and movable in translation between a rest position and an active position, a transmission mechanism provided for moving the rod (208) from the rest position to the active position when the slider moves from the relaxed position to the supported position , and to move the rod (208) from the active position to the idle position when the slider moves from the pressed to the released position, a lock mechanism (250) electrically powered from a lock position to a unblocking position, a first switch between an electrical source and the locking mechanism (250) and operable between an open position and a closed position, where in the open position the power supply between the locking mechanism (250) and the electrical source is cut off and in the closed position the power supply between the locking mechanism (250) and the electrical source is ensured .

Description

ANTIPANIC BAR FOR A DOOR

TECHNICAL AREA

The present invention relates to a panic bar for a door and a door equipped with such a panic bar.

STATE OF THE PRIOR ART

In the context of emergency exits, it is known to equip the emergency door with a panic bar which extends horizontally across the door. The emergency door is locked on the frame by a bolt which engages in the frame keeper.

In an emergency, a person pushes horizontally against the panic bar which by a transmission mechanism moves the bolt to release it from the strike and thus authorize the opening of the emergency door.

Although such a panic bar is entirely satisfactory, the door cannot be locked.

STATEMENT OF THE INVENTION

An object of the present invention is to provide a panic bar which can be locked but which retains its function of emergency mechanism in the event of a problem, furthermore the unlocking of the door must be carried out quickly.

To this end, a panic bar is proposed for a door comprising a frame equipped with a strike and an opening, said panic bar comprising:

- a bolt intended to take alternately a closed position in which it is in the strike and an open position in which it is out of the strike,

- a base intended to be fixed to the opening,

- a slider mounted mobile on the base and designed to alternately take a relaxed position in which no user presses against the slider and a pressed position in which a user presses against the slider,

- a rod intended to transmit the displacement of the slide to the bolt, and mounted movable in translation on the base between a rest position corresponding to the closed position of the bolt and an active position corresponding to the open position of the bolt,

- a transmission mechanism intended to move the rod from the rest position to the active position when the slide moves from the released position to the pressed position, and to move the rod from the active position to the rest position when the slide passes from the pressed position to the relaxed position,

- a locking mechanism designed to be electrically powered by an electrical source and provided for alternately passing from a locking position to an unlocking position where the locking position corresponds to a position in which the displacement of the rod from the position to the rest to the active position is prevented, and where the release position corresponds to a position in which movement of the rod from the rest position to the active position is authorized, where the release position corresponds to a position in which the mechanism blocking is no longer electrically powered by the electrical source and where the locking position corresponds to a position in which the locking mechanism is electrically powered by the electrical source,

- a first switch between the electrical source and the blocking mechanism and operable between an open position and a closed position, where in the open position the power supply between the blocking mechanism and the electrical source is cut and where in the closed position the power supply between the blocking mechanism and the electrical source is ensured.

Advantageously, the blocking mechanism comprises:

- a lever movable in rotation on the base about an axis between a stop position corresponding to the locking position and a retracted position corresponding to the unlocking position, where in the stop position, the lever is aligned with the rod and a first end of the lever is positioned against and in the extension of one end of the rod to prevent it from moving towards the active position, and in the retracted position, the lever is moved out of its stop position allowing the movement of the rod towards the active position,

- an electromagnet intended to be supplied electrically by the electric source through the first switch, where the electromagnet is switched off when it is not electrically supplied, and where the electromagnet is switched on when it is electrically supplied,

a finger which is free to move in translation parallel to the rod when the electromagnet is switched off and which is pushed in the direction of the lever to come into abutment against and in the extension of the second end of the lever when the electromagnet is on, and

- a return element which forces the lever into the stop position.

Advantageously, the panic bar comprises a second switch arranged in series between the first switch and the electromagnet, the second switch can be actuated by the slide between an open position and a closed position where the open position of the second switch corresponds to the pressed position of the slide and where the closed position of the second switch corresponds to the released position of the slide.

Advantageously, the distance between the axis of rotation and the second end is greater than the distance between the axis of rotation and the first end.

Advantageously, the end of the rod which comes against the first end of the lever is provided with a roller mounted to move in rotation about an axis parallel to the axis of rotation and the first end of the lever has an inclined face against which rolls the roller.

Advantageously, the contact of the roller on the inclined face is offset with respect to the projection of the axis of rotation on the inclined face parallel to the direction of translation of the rod in the lever stop position, and this contact is positioned on the side. towards which the rotation of the lever takes place when it passes into the retracted position.

Advantageously, in the stop position, the second end of the lever and the finger are in contact with each other by means of surfaces inclined relative to the direction of translation of the rod and parallel to each other.

The invention also provides, on a door comprising a frame, an opening element movable in rotation on the frame by means of hinges, the frame being equipped with a strike and the opening element being equipped with a panic bar according to the one of the previous variants.

BRIEF DESCRIPTION OF THE DRAWINGS

The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the accompanying drawings, among which:

Fig. 1 shows a front view of a door fitted with a panic bar according to the invention, FIG. 2 shows the mechanism of the panic bar according to the invention in a safety mode, and FIG. 3 shows the mechanism of the panic bar according to the invention in a safety mode.

DETAILED DESCRIPTION OF EMBODIMENTS

Fig. 1 shows a door 100 which has a frame 102 and an opening 104 which is mounted so that it can move in rotation on the frame 102 by means of hinges 106.

The frame 102 is equipped with a keeper 108 and the opening 104 is equipped with a panic bar 150 according to the invention which has a bolt 110. The panic bar 150 is here mounted horizontally, but it can also be mounted vertically.

The bolt 110 is designed to alternately take a closed position in which it is in the keeper 108 to ensure the closure of the leaf 104 on the frame 102, and an open position in which it is out of the keeper 108 to ensure the opening of the opening 104 relative to the frame 102.

The panic bar 150 may be in a safety mode, a standby mode or a security mode.

Fig. 2 shows the interior of the panic bar 150 in the safety mode and FIG. 3 shows the inside of the panic bar 150 in the safety mode. The panic bar 150 comprises a base 202 integral with the opening 104 and a slide 112 which is movably mounted on the base 202 and which can be actuated by a user. The slider 112 is here mounted to slide on the base 202 perpendicularly to the plane of the opening 104, but it can also be mounted to be movable in rotation relative to the base 202. The means used to move the slider 112 are conventional and are not described in more detail, but they include, for example, slides or levers.

The slider 112 can thus alternately take a relaxed position in which no user presses against the slider 112 and a pressed position in which a user presses against the slider 112 to unlock the leaf 102.

The safety mode of the panic bar 150 corresponds to the closed position of the bolt 110 and an action against the slider 112 to pass into the pressed position does not trigger any movement of the bolt 110 and therefore no opening of the leaf 104.

The standby mode of the panic bar 150 corresponds to the closing position of the bolt 110 and the slider 112 is not yet actuated, but if it is actuated to move into the pressed position, it will trigger a displacement of the bolt 110 to its position opening and therefore an opening of the opening 104.

The security mode of the panic bar 150 corresponds to the position in which the slider 112 has been actuated to pass into the pressed position and has triggered a movement of the bolt 110 which has come out of the keeper 108 and therefore an opening of the leaf 104. Security mode is the mode that follows standby mode.

The panic bar 150 comprises, mounted on the base 202, a rod 208 intended to transmit the displacement of the slider 112 to the bolt 110. The rod 208 is mounted movable in translation, here horizontally, between a position at rest (Fig. 2) corresponding in the closed position of the bolt 110 and an active position (Fig. 3) corresponding to the open position of the bolt 110.

The displacement of the rod 208 is linked to the displacement of the slider 112 by means of a transmission mechanism designed to move the rod 208 from the rest position to the active position (direction of arrow 209) when the slider 112 passes from the relaxed position to the pressed position, and to move the rod 208 from the active position to the rest position (direction opposite to the arrow 209) when the slider 112 passes from the pressed position to the relaxed position. The transmission mechanism, for example, takes the form of a bevel gear system.

The transmission of movement between the rod 208 and the bolt 110 is effected here by an activator 206 which is incorporated for this purpose in the rod 208 and which here takes the form of a fork 206 integral with the rod 208 and moving the bolt 110 to remove it from the keeper 108. The connection between the rod 208 and the activator 206 is represented here by the line 210.

The panic bar 150 also includes, fixed to the base 202, a locking mechanism 250 which is designed to switch alternately from a locking position to an unlocking position. The locking position corresponds to a position in which movement of the rod 208 from the rest position to the active position is prevented, and the unlocking position corresponds to a position in which the movement of the rod 208 from the rest position towards the active position and vice versa is authorized.

The blocking mechanism 250 is electrically powered by an electrical source 115, typically the electrical distribution network present in the building where the door 100 is provided with the panic bar 150. The unlocking position corresponds to a position in which the mechanism blocking 250 is no longer electrically supplied by the electric source 115 and the blocking position corresponds to a position in which the blocking mechanism 250 is electrically supplied by the electric source 115.

The blocking position corresponds to the safety mode of the panic bar 150. The unlocking position corresponds to the standby mode and the security mode of the panic bar 150.

The panic bar 150 also includes a first switch 114 which is arranged on an electrical line between the electrical source 115 and the locking mechanism 250 and which can be actuated between an open position and a closed position. When the first switch 114 is in the open position, the electrical supply between the locking mechanism 250 and the electrical source 115 is cut, thus controlling the passage of the locking mechanism 250 from the locking position to the unlocking position and when the first switch 114 is in the closed position, the electrical supply between the locking mechanism 250 and the electrical source 115 is ensured, thus controlling the passage of the locking mechanism 250 from the unlocking position to the locking position.

Thus, when the first switch 114 is positioned in the closed position, the first switch 114 controls the locking mechanism 250 in the locking position, the displacement of the rod 208 from the rest position to the active position is prevented, and the bolt 108 remains in the closed position in the keeper 110 even if a user tries to move the slider 112 from the released position to the pressed position. Conversely, when the first switch 114 is positioned in the open position, the first switch 114 controls the locking mechanism 250 in the unlocking position, the displacement of the rod 208 from the rest position to the active position is authorized and the bolt 108 moves in its open position out of the keeper 110 when a user moves the slider 112 from the released position to the pressed position.

Thus, the opening of door 100 is linked to the state of the first switch 114, which takes, for example, the form of a push button. The actuation of the first switch 114 from the closed position to the open position is carried out by a person wishing to open the door or remotely from a security station in an emergency or automatically in the event of a power failure. The actuation of the first switch 114 from the open position to the closed position is carried out by a person wishing to lock the door or remotely from a security station when the emergency has passed or automatically in the event of power return.

In addition, when the electrical source 115 is broken, for example, following a power failure, the locking mechanism 250 is no longer electrically supplied and goes into the unlocking position ensuring the possibility of opening the door 100 whatever or the state of the first switch 114.

The transition to safety mode is carried out quickly (conventionally in less than a second) and is obtained even if a force, the value of which can reach 100 DaN (approximately 100 kg), is applied perpendicular to the leaf 104.

The locking mechanism 250 comprises a lever 252 movable in rotation on the base 202 around an axis of rotation 256 perpendicular to the plane of the opening 104 between a stop position (Fig. 2) corresponding to the locking position and a retracted position (Fig. 3) corresponding to the release position. In the stop position, the lever 252 is aligned with the rod 208 and a first end of the lever 252 is positioned against and in the extension of one end of the rod 208 to prevent it from moving towards the active position, and in retracted position, the lever 252 is moved out of its stop position authorizing the displacement of the rod 208 towards the active position.

The locking mechanism 250 comprises a locking system 254 comprising an electromagnet 258 and a finger 260 movable by the electromagnet 258.

For reasons of lightness, the finger 260 is made of plastic and integral with the plunger core 261 of the electromagnet 258 which moves as a function of the state of the electromagnet 258.

The on or off state of the electromagnet 258 is controlled by its electrical connection with the electrical source 115, that is to say either directly by the state of the electrical source 115, or by the state of the first switch 114. The electromagnet 258 is electrically supplied by the electric source 115 through the first switch 114.

Thus, when the electric source 115 delivers current and the first switch 114 is in the closed position, the electromagnet 258 is turned on, that is to say electrically powered, when the electric source 115 delivers current and the first switch 114 is in the open position, the electromagnet 258 is off, that is to say not electrically supplied, and when the electric source 115 does not deliver current and the first switch 114 is in the open or closed position, the electromagnet 258 is off, that is to say not electrically supplied. Generally speaking, the electromagnet 258 is switched off when it is not electrically supplied, and the electromagnet 258 is switched on when it is electrically supplied.

When the electromagnet 258 is off, the finger 260 is free to move in translation parallel to the rod 208. When the electromagnet 258 is on, the finger 260 is pushed in the direction of the lever 252 to come into abutment against and in the extension of the second end of the lever 252 and prevents rotation of the lever 252.

Thus, when the electromagnet 258 is switched on, the finger 260 is forced against the lever 252 which is in the stop position and it is not free to move, thus, when the slide 112 is pushed from the released position to the pressed position, the rod 208 attempts to move from the rest position to the active position but abuts the lever 252 which is locked in rotation by the finger 260, and the rod 208 is therefore unable to continue its movement and remains locked in the rest position by the lever 252 and therefore the activator 206 does not move and the bolt 110 remains in the closed position.

Thus, when the electromagnet 258 is off, the finger 260 is no longer constrained and is free to move, and when the slider 112 is pushed from the released position to the pressed position, the rod 208 moves from the position to the rest in the active position and switches the lever 252 (arrow 253) from the stop position to the retracted position since the finger 260 does not undergo any force from the electromagnet 258, which repels the finger 260 and allows the complete displacement of the rod 208 towards the active position and of the activator 206 which displaces the bolt 110 in the open position.

In the latter case, when the slider 112 is released and thus passes from the pressed position to the released position, the rod 208 returns to the rest position and the lever 252 returns to the stop position thanks to a return element 264 which constrains the lever in stop position. Depending on the installation, the return element 264 can be gravity, or a compression or torsion spring.

The stop position is determined here by a stop 262 fixed on the base 202. The stop 262 prevents rotation of the lever 252 in one direction and the finger 260 prevents rotation in the other direction, and more particularly in the direction allowing go from the stop position to the retracted position.

When the solenoid 258 is off, either because the first switch 114 is in the open position or the current source 115 is off, and the slider 112 is in the pressed position, it is necessary to prevent a return to the closed position of the first switch 114 or re-ignition of the current source 115 blocks the lever 252 in the retracted position. Indeed, from the position of FIG. 3, if a return of the current in the electromagnet 258 arrives, the finger 260 is again constrained in the direction of the lever 252, but as the lever 252 is in the retracted position, the finger 260 will pass beyond the second end of the lever 252 which can no longer return to the stop position.

To avoid such a problem, a second switch 214 is arranged in series between the first switch 114 and the electromagnet 258 and this second switch 214 can be actuated by the slider 112 between an open position and a closed position where the open position of the second switch 214 corresponds to the pressed position of the slider 112 and where the closed position of the second switch 214 corresponds to the released position of the slider 112. Thus, as long as the slider 112 is in the pressed position, the electromagnet 258 remains off even if the current returns the fact that the first switch 114 returns to the closed position or that the current source 115 again supplies the electromagnet 258. When the slider 112 is released to return to the released position, the second switch 214 remains open which prevents the return of the finger 260 and allows the rod 208 to return to the rest position and the lever 252 to the d position e stop and when the slider 112 reaches its released position, the second switch 214 returns to the closed position, which makes it possible to power the electromagnet 258 if the first switch 114 is also in the closed position. In other words, as long as the slider 112 is held in the depressed position, the second switch 214 is in the open position, which prevents re-energization of the electromagnet 258, even if the first switch 114 has passed into the closed position. Thus, the finger 260 cannot return to its stress position until the lever 252 has returned to the stop position.

In the embodiment of the invention presented here, the lever 252 forms a lever arm, that is to say that the distance between the axis of rotation 256 and the second end is greater than the distance between the axis of rotation 256 and the first end, here the ratio is 2/3 and 1/3. The offset of the axis of rotation of the lever 252 allows a phenomenon of reduction in the tilting of the lever 252, which allows the installation of a low power electromagnet 258, for example, at most 3.5 W. Thus, if the forces which are applied against the slider 112 become too great, for example more than 100 kg, the mechanism is nevertheless triggered by forcing on the finger 260.

In the embodiment of the invention presented here, the stop 262 is below the long part of the lever 252 and the stop position of the lever 252 here corresponds to a stable position by the action of gravity.

The retracted position of the lever 252 then consists of deviating from this stable position in opposition to gravity.

To facilitate the pivoting of the lever 252 under the action of the rod 208, the end of the rod 208 which comes against the first end of the lever 252 is provided with a roller 216 mounted movable in rotation about an axis parallel to the axis of rotation 256 and the first end of the lever 252 has an inclined face 218 relative to the direction of translation of the rod 208 and against which the roller 216 rolls. The inclined face 218 is parallel to the axis of rotation 256 .

The contact of the roller 216 on the inclined face 218 is offset with respect to the projection of the axis of rotation 256 on the inclined face 218 parallel to the direction of translation (209) of the rod 208 in the abutment position of the lever 252, and this contact is positioned on the side towards which the rotation of the lever 252 takes place when it passes into the retracted position. In the embodiment of the invention presented here, the rotation of the lever 252 takes place downwards, as regards the part between the axis of rotation 256 and the inclined face 218 and the contact therefore takes place below the axis of rotation 256.

The inclination of the inclined face 218 is oriented so as to facilitate the rolling of the roller 116 in order to cause the pivoting of the lever 252 while guaranteeing a certain resistance when the electromagnet 258 is switched on in order to ensure that the operation of the lever 252 is impossible. In the embodiment of the invention presented here, the inclined face 218 has a leak angle comprised between 4 ° and 8 °.

In the stop position, the second end of the lever 252 and the finger 260 are in contact with each other by means of surfaces inclined relative to the direction of translation of the rod 208 and parallel to each other. The inclined faces are parallel to the axis of rotation 256 and in the embodiment of the invention presented here, the inclined face of the second end of the lever 252 has a leakage angle β of approximately 30 °.

As mentioned previously, the angles of the inclined surfaces are oriented so that the finger 260 prevents the rotation of the lever 252. That is to say here, the inclined face of the finger 260 comes above the inclined face of the lever 252. 10 due to the fact that the inclined face of the lever 252 rises when the lever passes from the stop position to the retracted position.

To prevent kickback of the plunger core 261 during the power failure, the plunger core 261 is equipped with a compression spring 263 which forces the plunger core 261, and therefore the finger 260, in a position away from the lever 252. Indeed, a rebound of the plunger core 261 could place the finger 260 under the lever 252 thus rendering it inoperative.

Claims (8)

1) Panic bar (150) for a door (100) comprising a frame (102) equipped with a strike (108) and an opening (104), said panic bar (150) comprising: - a bolt (110) provided for alternately taking a closed position in which it is in the keeper (108) and an open position in which it is out of the keeper (108), - a base (202) intended to be fixed to the opening (104), - A slider (112) movably mounted on the base (202) and designed to alternately assume a relaxed position in which no user presses against the slider (112) and a pressed position in which a user presses against the slider (112) , a rod (208) provided for transmitting the displacement of the slide (112) to the bolt (110), and mounted movable in translation on the base (202) between a rest position corresponding to the closed position of the bolt (110) and an active position corresponding to the bolt opening position (110), - a transmission mechanism intended to move the rod (208) from the rest position to the active position when the slide (112) passes from the released position to the pressed position, and to move the rod (208) from the active position in the rest position when the slide (112) passes from the pressed position to the released position, - a locking mechanism (250) designed to be electrically powered by an electric source (115) and provided for alternately passing from a locking position to an unlocking position where the locking position corresponds to a position in which the displacement of the rod (208) from the rest position to the active position is prevented, and where the release position corresponds to a position in which movement of the rod (208) from the rest position to the active position is authorized, where the unlocking position corresponds to a position in which the locking mechanism (250) is no longer electrically powered by the electrical source (115) and where the locking position corresponds to a position in which the locking mechanism (250) is electrically powered by the electric source (H5), - a first switch (114) between the electrical source (115) and the blocking mechanism (250) and operable between an open position and a closed position, where in the open position the power supply between the blocking mechanism (250) and the electrical source (115) is cut off and where in the closed position the electrical supply between the locking mechanism (250) and the electrical source (115) is ensured. 2) Panic bar (150) according to claim 1, characterized in that the locking mechanism (250) comprises: - A lever (252) movable in rotation on the base (202) around an axis (256) between a stop position corresponding to the locking position and a retracted position corresponding to the unlocking position, or in the stop position , the lever (252) is aligned with the rod (208) and a first end of the lever (252) is positioned against and in the extension of one end of the rod (208) to prevent it from moving towards the position active, and in the retracted position, the lever (252) is moved out of its stop position allowing the displacement of the rod (208) towards the active position, - an electromagnet (258) intended to be supplied electrically by the electric source (115) through the first switch (114), where the electromagnet (258) is switched off when it is not electrically supplied, and where the electromagnet (258) is on when it is electrically powered, - A finger (260) which is free to move in translation parallel to the rod (208) when the electromagnet (258) is switched off and which is pushed in the direction of the lever (252) to bear against and in the extension of the second end of the lever (252) when the electromagnet (258) is on, and - a return element (264) which constrains the lever (252) in the stop position. 3) Panic bar (150) according to claim 2, characterized in that it comprises a second switch (214) arranged in series between the first switch (114) and the electromagnet (258), in that the second switch ( 214) can be actuated by the slide (112) between an open position and a closed position where the open position of the second switch (214) corresponds to the pressed position of the slide (112) and where the closed position of the second switch (214) corresponds in the released position of the slide (112). 4) Panic bar (150) according to one of claims 2 or 3, characterized in that the distance between the axis of rotation (256) and the second end is greater than the distance between the axis of rotation (256) and the first end. 5) Panic bar (150) according to one of claims 2 to 4, characterized in that the end of the rod (208) which comes against the first end of the lever (252) is provided with a roller (216) mounted movable in rotation about an axis parallel to the axis of rotation (256) and the first end of the lever (252) has an inclined face (218) against which the roller (216) rolls. 6) Panic bar (150) according to claim 5, characterized in that the contact of the roller (216) on the inclined face (218) is offset relative to the projection of the axis of rotation (256) on the inclined face (218) parallel to the direction of translation of the rod (208) in the lever stop position (252), and in that this contact is positioned on the side towards which the rotation of the lever (252) takes place goes into the retracted position. 7) Panic bar (150) according to one of claims 2 to 6, characterized in that in the stop position, the second end of the lever (252) and the finger (260) are in contact with one other by means of surfaces inclined relative to the direction of translation of the rod (208) and parallel to each other. 8) Door (100) comprising a frame (102), an opening (104) rotatably mounted on the frame (102) by means of hinges (106), the frame (102) being fitted with a keeper ( 108) and the opening (104) being equipped with a panic bar (150) according to one of the preceding claims.