FR3139473A1 - Activation device for permanent or auxiliary pressure fire extinguisher and associated fire extinguisher - Google Patents

Abstract

The invention relates to an activation device (2) for a pressure extinguisher, comprising a extinguisher head body (4) fixed on a reservoir (1), a handle (5) movable in rotation on the body around a hinge pin (8), an activation means movable in translation by rotational actuation of the handle, and a pin (7) parallel to the hinge pin and arranged to occupy a safety position blocking the handle in a resting position. The body and the handle each carry two grooves (17a, 17b) in a concave arc distributed in two planes parallel to two external walls (10a), and cooperating in pairs to form in each of the two planes a housing of substantially circular section when the handle is in the rest position. The cylindrical longitudinal body of the pin passes through the two walls (10a, 10b) and each housing, and comprises at least two longitudinal blocking portions whose circular cross section substantially fills each housing formed. Figure for abstract: Fig. 1

Description

Activation device for permanent or auxiliary pressure fire extinguisher and associated fire extinguisher

The present invention relates to the general field of permanent or auxiliary pressure fire extinguishers, and more specifically an activation device for such fire extinguishers, the activation device being of the type comprising a fire extinguisher head body capable of being fixed on a upper part of a fire extinguisher tank, a manual actuation handle mounted on the fire extinguisher head body and movable in rotation around an axis from a rest position to an activation position, a means of movable activation in translation inside the extinguisher head body and along a longitudinal axis of the extinguisher head body, by rotational actuation of said manual actuation handle from the rest position to the position d activation, and a safety device comprising a pin extending longitudinally along a pin receiving axis parallel to the hinge axis and arranged to occupy a safety position blocking the handle in said rest position.

Technology background

Many fire extinguishers on the market have the above characteristics. To be able to use them in the event of a fire to be controlled, a user must first completely remove the pin in order to be able to maneuver the handle and subsequently control the translation of the activation means.

In the case of an auxiliary pressure extinguisher, the activation means is conventionally a striker whose lower end is able to pierce the cover of a gas cartridge by tilting the handle into the activation position , so that the gas contained in the cartridge can flow into the extinguisher tank and put it under pressure.

In the case of a permanent pressure fire extinguisher for which an extinguishing agent (for example water, foam or powder) is initially placed under pressure in the fire extinguisher tank, the activation means is a rod or piston whose lower end carries a shutter, the rotational tilting of the handle causing the translational movement of the rod or piston and the communication of the extinguisher tank with an outlet lance.

In all cases, the effectiveness of the use of the fire extinguisher depends in particular on the speed with which the user will actually activate the fire extinguisher.

The present invention aims to provide improvements to activation devices for portable fire extinguishers.

The first object of the invention is in particular an activation device for a permanent or auxiliary pressure fire extinguisher, said activation device comprising a fire extinguisher head body capable of being fixed to an upper part of a fire extinguisher tank, a manual actuation handle mounted on the extinguisher head body and movable in rotation around a hinge axis from a rest position to an activation position, an activation means movable in translation in interior of the extinguisher head body and along a longitudinal axis of the extinguisher head body, by rotational actuation of said manual actuation handle from the rest position to the activation position, and a device for safety comprising a pin capable of extending longitudinally along a pin receiving axis parallel to the hinge axis and arranged to occupy a safety position blocking the handle in said rest position, characterized in that the head body extinguisher on the one hand, and the manual actuation handle on the other hand, each carry, between two external walls which extend perpendicular to the articulation axis, two grooves in the shape of a concave arc of a circle distributed in two planes parallel to the external walls, the grooves cooperating in pairs to form in each of the two planes a housing of substantially circular section coaxial with the pin receiving axis when the manual actuation handle is in the rest position, in that the pin comprises a cylindrical longitudinal body passing through the two external walls as well as each housing formed when the manual actuation handle is in the rest position, and in that the cylindrical longitudinal body of the pin comprises at least two longitudinal blocking portions having a first circular cross section which substantially fills each housing formed when the manual actuation handle is in the rest position and the pin is in the safety position.

In possible embodiments, the extinguisher head body comprises two flanges projecting extending parallel along a longitudinal axis of the extinguisher head body, the manual actuation handle comprises a gripping part of elongated shape one end of which is provided with a yoke with two wings extending parallel to the two flanges, the two external walls are constituted either by the two flanges or by the two wings, and the articulation axis passes through the two flanges and both wings.

The two external walls can be constituted by the two wings and the two planes correspond to the planes of the two flanges which extend between the two wings. In this case, the two grooves carried by the extinguisher head body are located at the tops of the two flanges, and the two grooves carried by the manual actuation handle are located at the lower ends of two extensions of complementary profile at the tops of the two flasks.

Alternatively, the two external walls can be constituted by the two flanges, and the two planes correspond to the planes of the two wings which extend between the two flanges. In this case, the two grooves carried by the manual actuation handle are located at the lower ends of the two wings, and the two grooves carried by the extinguisher head body are located at the tops of two complementary profile extensions at the lower ends of both wings.

According to another possible characteristic, the device may further comprise a security seal provided with a wire passing through a transverse bore on the side of a first end of the cylindrical longitudinal body of the pin protruding from the corresponding external wall when the pin is in position. safety position.

In possible embodiments, the cylindrical longitudinal body of the pin comprises a first longitudinal release portion located on a first side, along the longitudinal axis of the cylindrical longitudinal body, of each of said at least two longitudinal blocking portions, each first longitudinal release portion having a second circular cross section coaxial and smaller than said first circular cross section, and the cylindrical longitudinal body of the pin is movable in translation in a first direction along its longitudinal axis, from the safety position to a first release position in which the first longitudinal release portions are received in the housings formed when the manual actuation handle is in the rest position.

Among these possible embodiments, the cylindrical longitudinal body of the pin may comprise a second longitudinal release portion located on a second side, along the longitudinal axis of the cylindrical longitudinal body, of each of said at least two blocking portions, each second longitudinal release portion having said second circular cross section, and the cylindrical longitudinal body of the pin is movable in translation in a second direction opposite to the first direction, from the safety position to a second release position in which the second Longitudinal release portions are received in the housings formed when the manual actuation handle is in the rest position.

According to another possible characteristic, the device may further comprise a first retaining means removably fixed on the first end of the cylindrical longitudinal body passing through one of the two external walls and a second retaining means on the second end of the longitudinal body cylindrical passing through the other of the two external walls, the first retaining means and the second retaining means each form a bearing surface for manually imparting a translation to the cylindrical longitudinal body of the pin from the safety position towards the first or the second release position, and the cylindrical longitudinal body has a length allowing the first retaining means or the second retaining means to abut against the corresponding external wall when the pin is in its first, respectively its second, release position.

According to another possible characteristic, the cylindrical longitudinal body of the pin is capable of cutting the thread of the security seal when the pin passes from its security position to its first or second release position.

In other possible embodiments, the two longitudinal blocking portions are contiguous. According to a possible characteristic, a second end of the cylindrical longitudinal body of the pin, opposite the first end and extending beyond the corresponding external wall when the pin is in the safety position, is provided with a gripping head.

The present invention also relates to a permanent or auxiliary pressure fire extinguisher, characterized in that it comprises an activation device according to the first object of the invention.

Brief description of the figures

The description which follows with reference to the appended drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be carried out. In the attached figures:

There illustrates a first exploded perspective view of the upper part of an auxiliary pressure fire extinguisher equipped with an activation device according to a first embodiment of the invention;

There illustrates another exploded perspective view of the upper part of the fire extinguisher of the ;

There illustrates a longitudinal section of the upper part of the fire extinguisher of Figures 1 and 2, in a plane containing the articulation axis of the handle and the pin receiving axis, after assembly of the activation device, the pin being in a safety position;

There illustrates an exploded perspective view of the pin alone, in accordance with the first embodiment;

There illustrates a partial perspective view of the fire extinguisher of Figures 1 to 4, according to a sectional plane containing the articulation axis of the handle and the pin receiving axis, the pin being in the safety position, before translation in a first direction F1 of the pin;

There illustrates another partial perspective view of this same fire extinguisher, according to another section plane perpendicular to the plane containing the articulation axis of the handle and the pin reception axis, the pin being in the safety position;

There illustrates another partial perspective view of this same fire extinguisher, according to a section plane containing the articulation axis of the handle and the pin receiving pin, the pin being in a first release position;

There illustrates another partial perspective view of this same fire extinguisher, according to another section plane perpendicular to the plane containing the articulation axis of the handle and the pin reception axis, the pin being in the first release position;

There and the show a temporal sequence of handle tilting on two partial perspective views of this same extinguisher, the pin being in the first release position;

There illustrates a partial perspective view of the fire extinguisher of Figures 1 to 4, according to a sectional plane containing the articulation axis of the handle and the pin receiving axis, the pin being in the safety position, before translation in a second direction F3 of the pin;

There illustrates another partial perspective view of this same fire extinguisher, according to another section plane perpendicular to the plane containing the articulation axis of the handle and the pin reception axis, the pin being in the safety position;

There illustrates another partial perspective view of this same fire extinguisher, according to a section plane containing the hinge axis of the handle and the pin receiving pin, the pin being in a second release position;

There illustrates another partial perspective view of this same fire extinguisher, according to another section plane perpendicular to the plane containing the articulation axis of the handle and the pin receiving axis, the pin being in the second release position;

There and the show a temporal sequence of handle tilting on two partial perspective views of this same extinguisher, the pin being in the second release position;

There illustrates an exploded perspective view of the upper part of an auxiliary pressure fire extinguisher equipped with an activation device according to a second embodiment of the invention, in which the pin of the preceding figures has been replaced by a conventional pin ;

Description of embodiment(s)

In the figures, identical or equivalent elements will bear the same reference signs.

With reference to the various appended figures, a portable fire extinguisher conventionally comprises a tank 1, of generally cylindrical shape, and containing an extinguishing agent such as a liquid, a foam or a powder, and an activation device 2, fixed in the upper part of tank 1, allowing the fire extinguisher to be activated. In the examples illustrated in a non-limiting manner, the fire extinguisher is an auxiliary pressure fire extinguisher, so that the activation device 2 forms a percussion control device making it possible to activate the fire extinguisher by means of a handle to activate under pressure the contents of the tank 1, then allow the extinguishing agent under pressure to be directed onto the fire to be extinguished by means of an outlet lance 3.

As a variant not shown, the fire extinguisher can be a permanent pressure fire extinguisher. In this case, the activation device 2 forms a control device allowing, again by means of a handle, the putting into communication of the extinguisher tank with the fire lance by movement of the rod or piston.

In all cases, the activation device 2 comprises a fire extinguisher head body 4 (shown in the figures already fixed in an opening in the wall of the tank 1, on the upper part of the tank 1), a handle 5 manual actuation, an activation means 6 movable in translation inside and along a longitudinal axis of the body 4 of the extinguisher head by actuation of the manual actuation handle 5, and a safety device comprising a pin 7 (non-limiting embodiment of Figures 1 to 16) or 7 '(non-limiting embodiment of the ).

More precisely, the manual actuation handle 5, which also plays the role of carrying handle of the extinguisher, is mounted on the body 4 of the extinguisher head, movable in rotation around a hinge axis 8 from a rest position towards an activation position. In the non-limiting examples illustrated, the manual actuation handle 5 comprises a gripping part 9 of elongated shape to facilitate gripping, and one end of which is provided with a yoke comprising two parallel wings 10a, 10b. The yoke here overhangs the body 4 and the activation means 6. More precisely, the extinguisher head body 4 comprises two flanges 11a, 11b projecting extending parallel along a longitudinal axis of the head body 4 extinguisher, and the two wings 10a, 10b constitute two external walls extending parallel to the two flanges 11a, 11b and perpendicular to the hinge axis 8. In a variant not shown, these are the two flanges of the head body which could constitute the two external walls defining an internal space in which the two wings of the handle cover could extend. Whatever the variant considered, the hinge pin 8 passes through the two flanges 11a, 11b and the two wings 10a, 10b at corresponding orifices, such as those referenced 12a, 12b on the wings, and 13a, 13b on the flanges (see figures 1 and 2).

Furthermore, in the non-limiting example shown in the figures, the activation means 6 is a striker whose lower end is able to pierce the cover of a gas cartridge (not shown) by tilting the handle 5 from the rest position to the activation position, so that the gas contained in the cartridge can flow into the tank 1 of the fire extinguisher and put it under pressure. This is due to the fact that the manual actuation handle 5 carries, in the part covered by the yoke, a cam (not visible) in contact with an upper end of the striker 6, and whose profile is configured to allow, by rotation of the manual actuation handle 5 around its hinge axis 8, a translation of the striker 6 to a position in which the lower end of the striker perforates the cover of the gas cartridge.

In the variant not shown of a permanent pressure extinguisher, the striker 5 is replaced by a rod or piston carrying a shutter. As long as the handle is in its rest position, the shutter prevents communication between the reservoir and the fluid lance. On the other hand, the tilting of the handle from its rest position to the activation position causes the translational movement of the rod or piston carrying the shutter and the communication of the extinguisher tank with an outlet lance.

In all cases, the pin 7 or 7' of the safety device is configured to extend longitudinally along a receiving axis XX' of the pin parallel to the hinge axis 8 (see Figures 3 and 17) by crossing the external walls 12a, 12b at the level of orifices 12c located above the orifices receiving the hinge pin 8 (see Figures 1 and 2), and arranged to occupy a safety position blocking the handle 5 in the rest position , as illustrated in particular in Figures 3, 5, 6, 11, 12 and 17. As already mentioned, the role of the safety device is to block any inadvertent actuation of the manual actuation handle 5, in particular during the carrying of the 'extinguisher to the fire zone, and thus prevent translation of the activation means 6. In other words, as long as the pin 7 or 7' occupies its safety position, the handle 5 is blocked in its rest position .

In the non-limiting embodiments shown, the device 2 preferably also comprises a security seal 14 provided with a wire 15 passing through transverse holes provided on the side of a first end of the cylindrical longitudinal body of the pin 7 or 7' protruding from the corresponding external wall (the wing 10b in the example of the figures) when the pin 7 or 7' is in the safety position. Such a transverse drilling is represented by the reference 16 on the . The advantage of the seal is in particular to facilitate the maintenance of fire extinguishers, and, in the particular case of an auxiliary pressure fire extinguisher, to ensure that the auxiliary cartridge has not yet been activated. When the pin is in the safety position, the wire 15 also preferably passes through corresponding orifices 16' made at the level of a tubular extension secured to the wing 10b and coaxial with the orifice 12c (see Figures 2 and 5).

According to all the embodiments conforming to the present invention illustrated in the various appended figures, the body 4 of the extinguisher head carries two grooves 17a, 17b in the shape of a concave arc of a circle, preferably located at the tops of the two flanges 11a, 11b. In addition, the manual actuation handle 5 also carries two concave arc-shaped grooves (not referenced in the figures), which are located at the lower ends of two extensions of complementary profile at the tops of the two flanges. The four grooves thus formed are therefore distributed in two planes corresponding here to the planes of the two flanges 11a, 11b, and cooperate two by two to form, in each of these two planes, a housing 18a (see ), respectively 18b (see ), of substantially circular section coaxial with the pin receiving axis XX' when the manual actuation handle 5 is in the rest position.

It should be noted at this stage that, in the variant not shown indicated above for which the two flanges of the head body constitute the two external walls between which the two wings of the yoke of the handle extend, two grooves in concave arc of circle can be provided at the lower ends of the two wings of the yoke of the handle, and two grooves carried by the extinguisher head body are then provided, located at the tops of two extensions of complementary profile at the lower ends of both wings. In a similar manner, the four grooves are thus distributed in two planes corresponding to the planes of the two wings, and cooperate two by two to form, in each of the two planes, a housing of substantially circular section coaxial with the pin receiving axis when the manual operating handle is in the rest position.

Furthermore, as will be described in more detail below, the cylindrical longitudinal body of the pin 7 or 7' comprises at least two longitudinal blocking portions having a first circular cross section which substantially fills each housing 18a, 18b formed when the manual actuation handle 5 is in the rest position and the pin 7 or 7' is in the safety position.

A first non-limiting embodiment of a pin 7 is illustrated in Figures 1 to 16. These figures, and in particular the , show that the cylindrical longitudinal body of the pin 7 comprises several longitudinal portions having different circular cross sections. More precisely, the body comprises at least two longitudinal portions having a first circular cross section, such as the longitudinal portions 19a, 19b, as well as longitudinal portions having a second circular cross section coaxial and smaller than the first circular cross section, such as on the one hand, the first portions 20a and 20b each located respectively on the left side of the portions 19a and 19b, and on the other hand, the second portions 20c and 20d each located respectively on the right side of these same portions 19a and 19b.

The relative position and dimensions of the longitudinal portions 19a and 19b, in particular the first cross section of these portions, are chosen so that these portions 19a and 19b are received in the two housings 18a, 18b which are formed when the pin 7 is in the safety position and the handle 5 is in the rest position, substantially filling these two housings. This particular configuration is visible for example:
- in Figures 5 and 11 which show a partial perspective view of the fire extinguisher according to a first section plane containing the hinge pin 8 of the handle and the pin receiving pin;
- on the which shows another partial perspective view of the fire extinguisher, according to a second sectional plane corresponding to the plane of the flange 11b, perpendicular to the plane containing the hinge axis 8 of the handle and the pin receiving axis, view on which the longitudinal portion 19b substantially fills the corresponding housing located above the flange 11b;
- on the which shows a partial perspective view of the fire extinguisher, according to a third section plane corresponding to the plane of the flange 11a, perpendicular to the plane containing the hinge axis 8 of the handle and the pin receiving axis, seen on which the longitudinal portion 19a substantially fills the corresponding housing located above the flange 11a.

In this particular configuration, the handle 5 is therefore prevented from rotating around the hinge axis 8, so that the longitudinal portions 19a, 19b correspond to locking portions of the handle when the latter is in position. rest and the pin is in the safety position.

The relative position and dimensions of the first longitudinal portions 20a and 20b, in particular the second cross section of these portions, are chosen so that, after translation of the body of the pin 7 along its longitudinal axis (confused with the axis reception XX' of the pin) in the direction of arrow F1 illustrated in Figures 5 and 6, this translation being operated manually while the handle 5 is still in the rest position, these first portions 20a and 20b are received respectively in the two housings 18a, 18b. This particular configuration is visible in particular on the (cut according to the first cutting plane), or even on the which shows a partial perspective view of the fire extinguisher, according to the second section plane corresponding to the plane of the flange 11b, view in which the longitudinal portion 20b is received in the corresponding housing located above the flange 11b, without filling it with made of its smaller cross section. In this particular configuration, the handle 5 is therefore no longer prevented from rotating around the hinge axis 8. The position occupied by the pin 7 on the or 8, with the first longitudinal portions received 20a, 20b respectively in the housings 18a and 18b, and “first handle release portions” the first longitudinal portions 20a and 20b of the pin 7.

Analogously, the relative position and dimensions of the second longitudinal portions 20c and 20d, in particular the cross section of these portions which preferably corresponds to the second cross section, are chosen so that, after translation of the body of the pin 7 in the direction of arrow F3 illustrated in Figures 11 and 12, this translation in the opposite direction to arrow F1 being operated manually while the handle is still in the rest position, these second portions 20c and 20d are received respectively in the two housings 18a, 18b. This other particular configuration is visible in particular on the (cut according to the first cutting plane), or even on the which shows a partial perspective view of the fire extinguisher, according to the third section plane corresponding to the plane of the flange 11a, view in which the longitudinal portion 20c is received in the corresponding housing 18a located above the flange 11a, without filling it due to its smaller cross section. In this other particular configuration, the handle 5 is therefore, here again, no longer prevented from rotating around the articulation axis 8. We subsequently call "second release position" the position occupied by the pin 7 on Figures 13 or 14, and “second handle release portions” the second longitudinal portions 20c and 20d of the pin 7.

It follows from the above that the pin 7 according to this first embodiment can pass indifferently from the safety position to a release position corresponding either to the first release position or to the second release position, depending on whether the movement translation of pin 7 has been printed according to the direction of arrow F1 or the direction of arrow F3. As illustrated on the , the pin body may include an intermediate longitudinal portion 19c located equidistant between the two blocking portions 19a and 19b, and of the same cross section as these longitudinal blocking portions. This intermediate longitudinal portion 19c guarantees perfect guidance of the pin during its translation movement between its safety position and any of its release positions.

Furthermore, in this first non-limiting embodiment, we note that the cylindrical longitudinal body of the pin 7 is advantageously capable of cutting the wire 15 of the security seal 14 when the pin passes from its security position to its first or second position. second release position. Thus, Figures 7 and 13 show that the wire 15 has been cut. In the non-limiting embodiment illustrated, the presence of the tubular extension coaxial with the orifice 12c ( ) allows you to increase the force that is necessary to apply to translate the pin.

The activation device according to this first non-limiting embodiment further comprises two retaining means 21a, 21b making it possible to guarantee that the pin 7 remains secured to the device even after activation of the extinguisher. This advantageously makes it possible to make the pin 7 captive, so that it can be reused during a maintenance operation of the fire extinguisher, and that it does not risk polluting the environment by remaining on the premises where the The fire extinguisher was used. More precisely, to allow the mounting of the pin 7 along the pin receiving axis, the first retaining means 21b is removably fixed on a first end of the cylindrical longitudinal body, preferably on the end carrying the seal 14 and crossing in the non-limiting example illustrated the external wall 10b. The second retaining means 21a is on the second end crossing in the example the opposite external wall 10a. The second retaining means 21a can also be removably fixed on the end of the pin. Alternatively, the second retaining means 21a can be integral with the pin body. The first retaining means 21b and the second retaining means 21a each form a support surface allowing a user to manually translate the cylindrical longitudinal body of the pin 7 from the safety position towards the first or second position of liberation. Preferably, the cylindrical longitudinal body has a length allowing the first retaining means 21b or the second retaining means 21a to abut against the corresponding external wall when the pin 7 is in its first, respectively its second, release position. This advantageously makes it possible to guarantee good positioning of the pin 7 in any of its release positions.

Advantageously, and as illustrated in the non-limiting example of the , the longitudinal portions 19a to 19c may include a flat 22 making it possible to index the position of the pin 7 in its receiving axis so as to align the holes for the passage of the wire 15 of the seal 14.

When any one of the two release positions has been reached, the handle 5 can be actuated around its hinge axis 8. Thus, as shown in the sequencing of Figures 8 to 10, when the pin 7 has been placed in its first release position ( ), simply move the handle according to arrow F2 (figures 9 and 10) to activate the extinguisher. Analogously, as shown in the sequencing of Figures 14 to 16, when pin 7 has been placed in its second release position ( ), simply move the handle, always following arrow F2 (figures 15 and 16) to activate the extinguisher. It should be noted at this point that the direction of arrow F2 corresponds to activation by lowering the handle. As a variant not shown, the principles described above can be applied for a design in which the handle must be lifted to activate the extinguisher.

The first embodiment which has just been described has the advantage of allowing simple use of the fire extinguisher in the event of a fire, whether the user is right-handed or left-handed. Indeed, a right-handed user can grasp the handle 5 with his right hand and carry the extinguisher to the place of the fire, then press with his thumb, without changing hands, on the support surface formed by the means retainer 21a to translate the pin 7 in the direction of arrow F3 to the second release position, then lower the handle to activate the extinguisher. Analogously, a left-handed user can grasp the handle 5 with his left hand and carry the extinguisher to the place of the fire, then press with his thumb, without changing hands, on the support surface formed by the retaining means 21b to translate the pin 7 in the direction of arrow F1 to the first release position, then lower the handle to activate the extinguisher. The different elements (body of the pin, spacing of the housings 18a, 18b, etc.) can be dimensioned to allow movement by translation of the pin of approximately 5 millimeters in one or other of the two possible directions of translation .

The ambidextrous nature on the one hand, and the fact that the pin 7 is captive on the other hand, make this first embodiment a preferred embodiment of the invention. Nevertheless, we can envisage, without departing from the scope of the invention, to provide that the pin body can only be translated in one direction F1 or F2, and is only provided with a single release portion located on a first side of each blocking portion. This alternative embodiment, not shown, remains interesting because the pin is still attached to the activation device, even after activation of the fire extinguisher.

There illustrates a second embodiment of the activation device of the invention which differs from the first embodiment described above by the sole fact that the pin 7 has been replaced by a pin 7' provided with a gripping head 23 and whose cylindrical longitudinal body (not visible on the ) has said first circular cross section on at least all the longitudinal portions located between the two planes containing the grooves in the shape of a concave arc of a circle and the two housings formed by these grooves when the pin is in the safety position and the handle is in its position rest. In other words, the two longitudinal blocking portions 19a, 19b described in the context of the pin 7, are here contiguous. The pin 7' is thus a classic type pin whose body portion located between the two aforementioned planes has a single cross section. When a user wants to use the fire extinguisher, he must first completely remove the pin 7 by pulling on the gripping head 23, which at the same time causes the wire 15 to be torn from the seal 14.

It follows from the above that the same arrangement of handle and extinguisher head body can be used either with the pin illustrated on the , or with a classic type pin.

Claims (14)

Activation device (2) for a permanent or auxiliary pressure extinguisher, said activation device (2) comprising a extinguisher head body (4) capable of being fixed on an upper part of a reservoir (1) of extinguisher, a manual actuation handle (5) mounted on the body (4) of the extinguisher head and movable in rotation around a hinge axis (8) from a rest position to an activation position , an activation means (6) movable in translation inside the body (4) of the extinguisher head and along a longitudinal axis of the body (4) of the extinguisher head, by rotational actuation of said handle ( 5) manual actuation from the rest position to the activation position, and a safety device comprising a pin (7; 7') capable of extending longitudinally along a receiving axis (XX') of pin parallel to the hinge axis (8) and arranged to occupy a safety position blocking the handle (5) in said rest position, characterized in that the body (4) of the extinguisher head on the one hand , and the manual actuation handle (5) on the other hand, each carry, between two external walls (10a, 10b) which extend perpendicular to the articulation axis (8), two grooves (17a, 17b ) in a concave arc of a circle distributed in two planes parallel to the external walls (10a, 10b), the grooves (17a, 17b) cooperating two by two to form in each of the two planes a housing (18a, 18b) of substantially circular coaxial section to the pin receiving axis (XX') when the manual actuation handle (5) is in the rest position, in that the pin (7; 7') comprises a cylindrical longitudinal body passing through the two external walls (10a, 10b) as well as each housing (18a, 18b) formed when the manual actuation handle (5) is in the rest position, and in that the body longitudinal cylindrical pin (7; 7') comprises at least two longitudinal locking portions (19a, 19b) having a first circular cross section which substantially fills each housing (18a, 18b) formed when the actuation handle (5) manual is in the rest position and the pin (7; 7') is in the safety position. Device according to claim 1, in which the body (4) of the extinguisher head comprises two flanges (11a, 11b) projecting while extending parallel along a longitudinal axis of the body (4) of the extinguisher head, the handle (5) for manual actuation comprises a gripping part (9) of elongated shape, one end of which is provided with a yoke with two wings (10a, 10b) extending parallel to the two flanges (11a, 11b), both external walls are constituted either by the two flanges (11a, 11b), or by the two wings (10a, 10b), and the hinge pin (8) passes through the two flanges (11a, 11b) and the two wings ( 10a, 10b). Device (2) according to claim 2, in which the two external walls are constituted by the two wings (10a, 10b), and the two planes correspond to the planes of the two flanges (11a, 11b) which extend between the two wings (10a, 10b). Device (2) according to claim 3, in which the two grooves carried by the body (4) of the extinguisher head are located at the tops of the two flanges (11a, 11b), and the two grooves carried by the handle (5) manual actuation are located at the lower ends of two complementary profile extensions at the tops of the two flanges (11a, 11b). Device (2) according to claim 2, in which the two external walls are constituted by the two flanges, and the two planes correspond to the planes of the two wings which extend between the two flanges. Device (2) according to claim 5, in which the two grooves carried by the manual actuation handle are located at the lower ends of the two wings, and the two grooves carried by the extinguisher head body are located at the tops of two Complementary profile extensions at the lower ends of both wings. Device (2) according to any one of the preceding claims, further comprising a security seal (14) provided with a wire (15) passing through a transverse bore (16) on the side of a first end of the cylindrical longitudinal body of the pin (7; 7') protruding from the corresponding external wall (10b) when the pin (7; 7') is in the safety position. Device (2) according to any one of the preceding claims, characterized in that the cylindrical longitudinal body of the pin (7) comprises a first longitudinal release portion (20a, 20b) located on a first side, along the axis longitudinal of the cylindrical longitudinal body, of each of said at least two longitudinal blocking portions (19a, 19b), each first longitudinal release portion (20a, 20b) having a second circular cross section coaxial and smaller than said first circular cross section, and in that the cylindrical longitudinal body of the pin (7) is movable in translation in a first direction along its longitudinal axis, from the safety position to a first release position in which the first longitudinal release portions (20a, 20b) are received in the housings (18a, 18b) formed when the manual actuation handle (5) is in the rest position. Device (2) according to claim 8, characterized in that the cylindrical longitudinal body of the pin (7) comprises a second longitudinal release portion (20c, 20d) located on a second side, along the longitudinal axis of the longitudinal body cylindrical, of each of said at least two blocking portions (19a, 19b), each second longitudinal release portion (20c, 20d) having said second circular cross section, and in that the cylindrical longitudinal body of the pin (7) is movable in translation in a second direction opposite the first direction, from the safety position to a second release position in which the second longitudinal release portions (20c, 20d) are received in the housings (18a, 18b) formed when the manual actuation handle (5) is in the rest position. Device (2) according to claims 7 and 9, characterized in that it further comprises a first retaining means (21b) removably fixed on the first end of the cylindrical longitudinal body passing through one of the two external walls and a second retaining means (21a) on the second end of the cylindrical longitudinal body passing through the other of the two external walls, in that the first retaining means (21b) and the second retaining means (21a) each form a surface of support to manually translate the cylindrical longitudinal body of the pin (7) from the safety position towards the first or second release position, and in that the cylindrical longitudinal body has a length allowing the first retaining means (21a ) or the second retaining means (21b) to abut against the corresponding external wall (10a, 10b) when the pin (7) is in its first, respectively its second, release position. Device (2) according to claim 10, in which the cylindrical longitudinal body of the pin (7) is capable of cutting the wire (15) of the security seal (14) when the pin (7) passes from its safety position to its first or second release position. Device according to any one of claims 1 to 7, in which the two longitudinal blocking portions are contiguous. Device (2) according to claim 12, in which a second end of the cylindrical longitudinal body of the pin (7'), opposite the first end and extending beyond the corresponding external wall when the pin is in the safety position, is provided with a gripping head (23). Permanent or auxiliary pressure extinguisher, characterized in that it comprises an activation device according to any one of claims 1 to 13.