EP1392400A1

EP1392400A1 - Device for exerting pressure on a door or any other vertical planar surface

Info

Publication number: EP1392400A1
Application number: EP02740815A
Authority: EP
Inventors: Yvan Cardona
Original assignee: Libervit (sarl); LIBERVIT SARL
Current assignee: Libervit (sarl); LIBERVIT SARL
Priority date: 2001-06-01
Filing date: 2002-05-27
Publication date: 2004-03-03
Anticipated expiration: 2022-05-27
Also published as: FR2825354B1; DE60223673D1; FR2825354A1; US20040149969A1; DE60223673T2; EP1392400B1; WO2002096517A1; US6916013B2

Abstract

This invention relates to a device for exerting pressure on a door or any other vertical planar surface (3) such as a partition from an external press point(s) (1,2). Said device is characterized in that it comprises: a preferably hydraulic actuator (4), an intermediate sole (6) and an upper press bar (7); said actuator comprises a mobile rod (4,1), one end of which is attached in an articulated and preferably detachable manner (6,3) to intermediate sole (6), said higher press bar (7) is preferably attached in an articulated and even more preferably in a detachable manner to one of the ends of said intermediate sole.(6)

Description

Device for exerting a push on a door or any other vertical flat surface.

The present invention relates to a device for exerting a push on a door or any other vertical flat surface such as a partition, from external support point (s). The present invention also relates to a

"^' process for exerting a thrust preferably of at least 50 kN on a door or any other vertical flat surface from external support points.

More particularly, the invention relates to a device for opening, as quickly as possible, in force, without shock and in silence, any type of residential door, industrial or other premises.

These devices are intended to be used mainly by rescue organizations such as firefighters or civil protection, or by special police or gendarmerie brigades.

Already known devices of this kind called "hydraulic crowbar", composed of an electric, thermal or pneumatic motor, associated with a hydraulic pump and an oil tank. This pressure source is connected, by means of a flexible pipe, to a tool intended to push the door exclusively in the direction of opening, after having engaged the tool between the frame and the door, and providing a force spacing by hydraulic cylinder.

There is also another tool for opening doors, consisting of two cylinders arranged perpendicularly and integral with each other: m a first cylinder positioned horizontally bearing on the vertical uprights of the door frame, and m a second cylinder also positioned horizontally but perpendicular to the first cylinder and integral with it.

This tool makes it possible to exert a pushing force exclusively in the direction of opening, on the door at the level of the lock.

The devices mentioned above have drawbacks that make them difficult to use, or in some cases completely unusable compared to current security doors.

The majority of current security doors are fitted with, among other things, metal angles arranged around the door frame, not allowing in no case to slide any object between the door and the frame, which makes the system of the hydraulic crowbar type mentioned above totally unusable.

As for the other tool with two perpendicular jacks, the simple fact of having to be positioned horizontally halfway between the ground and the top of the post frame, to allow the jack to exert its pushing force, is unacceptable in certain types of intervention, in particular those of the special police forces, which must be able, as soon as the door is opened, to penetrate instantly into the room concerned, and therefore see the passage blocked by the jack arranged horizontally and transversely between the two vertical uprights of the door frame.

It is further noted that current security doors, in particular those provided with 3 or 5 closing points, require a significant thrust force to obtain their opening and, in many cases, the first horizontal cylinder, having as only fulcrum that the door frame, is ejected by the effect of the pressure exerted by the second cylinder, which makes the tool completely inoperative.

The present invention aims to provide an improved door opening device and method and in particular by overcoming the drawbacks of the current devices and methods described above.

More particularly an object of the present invention is to provide a device for carrying out the thrust force in the usual direction of opening a door, but also in the direction of its closing, unlike said tool with double perpendicular cylinder . To do this, the present invention provides a device for exerting a push on a door or any other vertical flat surface such as a partition, from external support point (s), which comprises:

a preferably hydraulic jack, a midsole and an upper support bar, said jack comprising a movable rod, one end of which is articulated, preferably removably, on said midsole, and - Said upper support bar being preferably fixed in an articulated manner, more preferably removably, at one of its ends on said intermediate sole.

The term "external support point" is understood here to mean a point located at a distance from said door or said vertical flat surface.

The articulation of the end of the movable rod of said jack on said midsole makes it possible to arrange it in inclination preferably from 20 to 35 ° relative to the vertical, so as to be able to exert a thrust preferably of at least 50 kN on said midsole when said midsole is applied in abutment on said door or vertical flat surface and when said jack is in abutment on a lower external fulcrum, preferably on the ground.

Likewise, the articulation of said upper support bar on said intermediate sole makes it possible to arrange said bar substantially vertically so as to be able to apply its free end in support on an upper external support point preferably constituted by the frame of said door or a ceiling, or a horizontal flat surface located above said vertical flat surface. The term “free end” is understood here to mean the end of said bar which is not fixed to said midsole. In a preferred embodiment, the device according to the invention comprises a lower flange, said cylinder being fixed in an articulated manner, preferably in a removable manner, at its other end on said lower flange.

The articulation of said cylinder on said lower sole thus makes it possible to arrange said lower sole in abutment on said lower external bearing point, preferably on the ground, when said intermediate sole fixed to the end of the movable rod of said cylinder is in support on said door or said vertical flat surface, said cylinder being in an inclined position relative to the vertical. The present invention also provides a method for exerting a thrust preferably of at least 50 kN on a door or any other vertical flat surface from external support points, characterized in that a device according to the invention is used. In a particular embodiment of the method according to the invention, the steps are carried out in which:

1) said cylinder is preferably placed in an inclination of 20 to 35 ° relative to the vertical, with - said midsole resting on said door or vertical flat surface, preferably near the lock or door handle or hinges from said door,

said cylinder being in abutment on said lower external support point, preferably the ground, preferably by means of said lower sole, and

said upper support bar being in abutment against a said upper external support point, preferably a lintel of the frame of a door or a ceiling or a horizontal plane surface situated above said vertical plane surface, and 2 ) the movable rod of said actuator is operated in extension so as to exert a said thrust on said intermediate sole.

By "lower fulcrum" here means a fulcrum located at a height less than or equal to that of the fulcrum of the midsole on the door. The various constituent elements of a device according to the invention are fixed to each other in a removable manner, that is to say that the various constituent elements can be assembled or separated but united in an assembly ready to mount by fixing the different components to each other, namely said cylinder, said intermediate and lower flanges and said upper support bar. This removable assembly method also makes it possible to envisage the use of only a part of the constituent elements, in particular said jack fixed in an articulated and removable manner to said intermediate and lower flanges in the cases where there is a bearing surface. vertical outer on which one can apply said lower end plate of said cylinder, the latter then being substantially disposed horizontally.

Other particular and advantageous following characteristics of a device according to the invention can be taken separately or in combination: - Said cylinder is a double cylinder comprising a cylinder body consisting of a cylindrical chamber containing two movable rods capable of exerting thrusts oriented in opposite directions from one another, the ends of said movable rods on the side outside said chamber cylindrical, being connected in an articulated manner, preferably in a removable manner, respectively to said intermediate and lower flanges.

- Said upper support bar is of adjustable length, preferably constituted by two telescopic tubes, the length of said upper support bar being adjustable by locking the relative position of said telescopic tubes. This characteristic makes it possible to adapt the device according to the invention on doors of different heights on the one hand, and on the other hand to reduce the size of the device once stored.

- Said upper support bar has at its free end, a shoe forming a square angle. The angle iron is able to cooperate in support at a right angle to the lintel of the frame of a said door.

In a particularly advantageous manner, the device according to the invention comprises:

a hydraulic power station preferably delivering a pressure of at least 250 bars, preferably still mounted on a portable chassis behind the back of an operator, and

- Said hydraulic unit being preferably connected by a single hose to a single-acting hydraulic cylinder, more preferably by means of a handle allowing the opening and closing control of the hydraulic supply and return valves by fluid from said single acting hydraulic cylinder.

Indeed, insofar as the device according to the invention requires only a limited intervention time, it is possible to integrate small batteries so as to obtain a portable device of low weight and size. Other characteristics and advantages of the present invention will become apparent in the light of the detailed description which follows, given with reference to FIGS. 1 to 6 in which FIGS. 1A and 1B represent a device according to the invention assembled and adapted on a door closed in side view (fig. 1 A) and front view (fig. 1 B).

FIG. 2 represents a side view of a device according to the invention after actuation of the hydraulic cylinder and opening of the door. Figures 3A and 3B show a side view (fig. 3A) and front view (fig.

3B) a hydraulic cylinder.

FIGS. 4A, 4B and 4C represent views from above (4A), from the side (fig. 4B) and from the front (fig. 4C) of a bottom flange.

FIGS. 5A and 5B show views from above (5A) and from the side (5B) of an intermediate sole.

Figures 6A and 6B show side views (Fig. 6A) and front view (Fig. 6B) of an upper grab bar.

The device shown in the figures comprises:

- A double cylinder comprising a cylindrical cylinder body 4 ₃ containing two movable rods 4ι, 4 ₂ able to exert thrusts oriented in opposite directions from one another. The ends of said movable rods 4ι, 4 ₂ on the outside of said cylindrical chamber are connected in an articulated and removable manner respectively to said intermediate flanges 6 and lower 5.

In FIG. 4, said lower sole 5 comprises a flat support 5ι, one face of which is intended to come to bear on a lower support point 1, preferably the ground, comprises non-slip elements, preferably hard points 5, and the other side of which comprises articulation means 53, 5 ₄ ,

4 _{5 of} said cylinder 4 on said lower flange 5.

In FIGS. 6, said upper grab bar 7 of adjustable length is shown, constituted by two telescopic tubes 7, 7 ₃ the length of which is adjustable by locking 7Q from their relative position, in particular by means of an index, locking mechanism 7 ₆ cooperating in holes 7 ₇ in the upper tube 7 ₃ the upper tube 7 ₃ sliding inside the lower tube 7. FIGS. 6 also show a shoe 7 in the form of a square at the free end of said support bar, capable of cooperating in support in a right angle of a lintel of a door frame in particular, and a handle. transport 7 ₄ . In FIGS. 5, said intermediate sole 6 is shown comprising a flat support 6 ₁ one face of which is intended to come to bear on said door or vertical flat surface, and comprises non-slip elements consisting of hard points 6 ₂ , and the other face comprises articulation means 6 ₃ , 6 ₄ , 4 ₅ , 7 _{5 of} said jack 4 and of said upper support bar 7.

According to Figures 5, said midsole 6 comprises a flat support 6 ₁ notched forming a recessed area 6 ₄ for placing said midsole 6 around a block of a lock or a door handle 3ι. This configuration is advantageous because it guarantees the opening of the door by avoiding a simple central depression of the panel constituting the door without complete opening of the door, thus leaving an insufficient passage for the intervention personnel.

Said intermediate sole 6 and lower sole 5 comprise flat supports or plates 5-ι, 6 ₁ and articulation means 5 ₃ , 5, 6 ₃ ; 6 constituted by yokes 5 ₃ , 6 ₃ on one face of said flat supports 5ι, 6 _1; yokes on which are removably mounted, retractable lugs (not shown) forming articulation axes in holes 5 ₄ , 6 ₅ , 7 ₅ , 4 _{5 of} said yokes and said ends of said upper grab bar 7 and / or of said jack 4, thus allowing their articulation on said flanges 5, 6. More particularly, the piercing 4 ₅ at the end of the first movable rod 4-ι of the hydraulic jack cooperates with holes 6 ₅ of the yokes 6 ₃ of the midsole 6 and a first retractable lug (not shown) inserted into said holes 6 ₅ of the yokes and 4 ₅ of the end of said first movable rod 4ι of the jack, which allows the articulation of said jack by rotation around the axis formed by said first lug, in particular when one puts said midsole 6 in abutment on a said door 3 and that said cylinder 4 is inclined in position from 20 to 35 ° relative to the vertical.

Likewise, the bore 4 ₅ at the end of the second movable rod 4 _{2 of} said jack cooperates with holes 5 ₄ in the yokes 5 ₃ of the bottom flange 5, and a second retractable lug (not shown) inserted in said holes 5 ₄ yokes 5 ₃ of the lower sole 4 ₃ and of the end of said second movable rod 4 ₂ , which allows the articulation of said cylinder by rotation with respect to the axis formed by said second lug, in particular when said lower flange 5 is placed in abutment on the ground 1.

Similarly, the hole 7 ₅ at the lower end of said support bar 7 cooperates with holes 6 ₅ in the yokes 6 ₃ of the midsole 6 and a third retractable lug (not shown), inserted in said holes 7 ₅ , 6 ₅ , which allows the articulation of said upper support bar by rotation of the latter relative to the axis formed by said third lug when one puts in place said midsole 6 in ap ^Λ pui on the door 3.

Obviously, these means of articulation of the jack 4 and of the support bar 7 with respect to said soles 6, 5 are described purely by way of illustration of other articulation means which can be implemented without departing from the scope of the present invention.

In FIGS. 3, said hydraulic cylinder has been represented with a handle for putting into service 8 ₂ and a handle for transport 4 ₄ . The hydraulic cylinder 4 is a single-acting cylinder comprising a single hose enclosing the hydraulic fluid line and the electrical lines 8 ₁ . Said flexible hose 8 ₁ is connected to said cylinder by means of a commissioning handle 8 whose rotation triggers the starting of the hydraulic unit (not shown) at the end of the hose. These process and device for controlling and supplying hydraulic cylinders have been described in the patent for invention in France FR 94/07680 (published under the number 2 721 359).

This handle 8 ₂ , in combination with the flexible hose 8 ₁ connecting the latter to a source of hydraulic fluid, is an electrical connection between the latter and at least one contactor, and allows: - the control by rotation of the handle 82, closing said contactor for starting the source of fluid, which is thus pressurized,

the supply to the chamber of said jack situated on the sides of the movable pistons moving the rods of the jack, through a supply hose 81 and said handle 8 ₂ connected to said supply hose 81,

- stopping the movement of the cylinder rod and the source of pressurized fluid, by releasing the handle which returns to a neutral rest position, the opening of a fluid return valve which has filled the chamber of the jack by rotation of the handle in the opposite direction from above, and

- The evacuation of said fluid by pressing an elastic means on the other side of the pistons which then move in the direction opposite to the previous one. Preferably, the chamber of the jack situated on the other side of the piston is filled with respect to the chamber receiving said fluid under pressure with compressed gas which thus maintains a pressing pressure on the corresponding side of the piston. It is however possible, without departing from the scope of the present invention, to use double-acting cylinders with two flexible hoses for supplying hydraulic fluid which can respectively provide energy for implementation and respectively return of the movable rods.

For the implementation of the device according to the invention as shown in FIGS. 1 and 2, the following successive steps are carried out in which: - the upper support bar is positioned in support under and against the lindeau of frame 2 of the door 3,

- the midsole 6 is positioned in abutment on the door 3 around the lock 3ι,

- Positioning the lower sole 5 of the hydraulic cylinder 4 resting on the ground 1, the movable rods of the cylinder 4 are extended so that the cylinder takes an inclination of about 30 °. Once the device in place, the adhesion elements constituted by the hard steel points 6 ₂ and 5 ₂ of the intermediate flanges 6 and lower 5, make it possible to stabilize the device in position.

Once the device in place, the movable rods 4ι and 4 _{2 of} said jack are actuated in extension so as to exert a thrust of at least 50 kN respectively on said intermediate flanges 6 and lower 5.

A push is exerted on an armored door to force the opening by exerting a push on said midsole 6 until an increase in the inclination of said jack 4 is made by an angle of at least 3 °, preferably of 5 to 20 °. The cylinder deploys and transmits its force via the upper support bar 7 on the top of the frame 2 of the door or on the ceiling. The resistance offered by the upper fulcrum and by the lintel 2 of the frame will allow a horizontal thrust force to be obtained at the level of the intermediate sole 6 and allow the door to be opened.

The use of a hydraulic cylinder has been described, but the cylinder can also be pressurized by means of an electric, thermal, pneumatic or manual pump.

For current security doors, in particular those with 3 or 5 closing points, it is observed that when the device is located around the locks, they release from a cylinder thrust of approximately 50 kN obtained with a hydraulic pressure of approximately 250 bar and creating an additional tilt of the cylinder of 15 °, as shown in Figure 2. This operation occurring in seconds, the cylinder does not require significant energy and can be operational with a block of hydraulic power supply not exceeding 18 kg and which can be adapted on a portable chassis on the back.

Claims

1. Device for exerting a push on a door or any other vertical flat surface (3) such as a partition, from external support point (s) (1, 2), characterized in that it includes: - a preferably hydraulic cylinder (4), an intermediate sole (6) and an upper support bar (7),

- Said cylinder comprising a movable rod (4-ι), one end of which is hingedly attached (6 ₃ ), preferably removably, to said midsole (6), and - said upper support bar (7) preferably being hingedly attached (6 ₃ ), more preferably, removably, to one of its ends on said midsole (6).

2. Device according to claim 1, characterized in that it comprises a lower sole (5), said jack (4) being fixed in an articulated manner (5 ₃ ) preferably removably, at its other end (4 ₂ ) on said lower sole (5).

3. Device according to claim 2, characterized in that said cylinder is a double cylinder comprising a cylinder body consisting of a cylindrical chamber (4 ₃ ) containing two movable rods (4ι, 4 ₂ ) capable of exerting thrusts oriented opposite direction from each other, the ends of said movable rods on the outside of said cylindrical chamber, being connected in an articulated manner (6 ₃ , 5 ₃ ) preferably in a removable manner, respectively to said intermediate flanges (6) and lower (5).

4. Device according to one of claims 1 to 3, characterized in that said upper support bar (7) is of adjustable length, preferably constituted by two telescopic tubes (7 ₂ , 7 ₃ ), the length of said support bar (7) is adjustable by locking the relative position of said telescopic tubes.

5. Device according to one of claims 1 to 4, characterized in that said upper support bar (7) has at its free end a shoe

(7-ι) forming a square angle.

6. Device according to one of claims 1 to 5, characterized in. that said intermediate sole (6) comprises a flat support (61), one of which face is intended to come to bear on said door or vertical flat surface, comprises non-slip elements, preferably hard points (6 ₂ ), and the other face of which comprises articulation means (6 ₃ , 64, 4 ₅ , 7 ₅ ) of said cylinder (4) and of said upper support bar (7).

7. Device according to one of claims 2 to 6, characterized in that said lower sole (5) comprises a flat support (5-ι) including a face intended to come to bear on a lower support point (1) , preferably the ground, comprises non-slip elements, preferably hard points (5 ₂ ), and the other face of which comprises articulation means (5 ₃ , 5 ₄ , 4 ₅ ) of said jack (4) on said lower sole (5).

8. Device according to one of claims 2 to 7, characterized in that said intermediate (6) and lower (5) soles comprise a flat support (5ι, 61) and articulation means (5 ₃ , 5 ₄ , 6 ₃ ; 6 ₄ ) constituted by yokes (5 ₃ , 6 ₃ ) on one face of said flat supports (5ι, 61), yokes on which are mounted, preferably removably, lugs forming hinge pins in openings (5 ₅ , 6 ₅ , 7 ₅ , 4 ₅ ) of said yokes and said ends of said upper support bar (7) and / or of said jack (4), thus allowing their articulation on said flanges (5, 6) .

9. Device according to one of claims 1 to 8, characterized in that said intermediate sole (6) comprises a flat support (6 ^ notch forming a recessed area (6 ₄ ) allowing to arrange said intermediate sole (6) around 'a block of a lock or a door handle (3ι).

10. Device according to one of claims 1 to 9, characterized in that it comprises: - a hydraulic unit delivering a pressure preferably of at least 250 bars, preferably still mounted on a portable chassis in the back of an operator, and

- said hydraulic unit being preferably connected by a single hose

(8 ₁ ) to a single-acting hydraulic cylinder (4), preferably again by means of a handle (8 ₂ ) allowing the opening and closing of the hydraulic supply and return valves for fluid of said single-acting hydraulic cylinder.

11. Method for exerting a thrust preferably of at least 50 kN on a door or any other vertical flat surface (3) from external support points (1, 2) characterized in that a device is used according to one of claims 1 to 10.

12. Method according to claim 11, characterized in that the steps in which:

1) said cylinder (4) is disposed in an inclination preferably of 20 to 35 ° relative to the vertical, with

- said midsole (6) resting on said door or vertical flat surface (3), preferably near the lock or door handle or the hinges of said door,

- said cylinder (4) being supported on a lower external support point (1) preferably the ground, preferably by means of a said lower flange (5) and - said upper support bar (7 ) being in abutment against an upper external fulcrum (2), preferably a lintel of the frame of a door or a ceiling or a horizontal planar surface situated above said vertical planar surface, and

2) the movable rod (4-ι) of said actuator is operated in extension so as to exert a said thrust on said intermediate sole (6).

13. Method according to one of claims 1 1 or 12, characterized in that one exerts a push on an armored door to force the opening by exerting a push on said midsole (6) until an increase is obtained the inclination of said cylinder (4) by an angle of at least 3 °, preferably an increase from 5 to 20 °.