DETACHABLE THRUST DEVICE FOR OPENING A DOOR

Abstract

A thrust device for opening a door which can be assembled from a ready-to-assemble assembly of at least three parts by reversible attachment devices, which can be manually activated and deactivated, and able to maintain a rectilinear alignment of the lower and upper parts of the lower and upper support bars.

Claims

1.-15. (canceled)

16. A thrust device for exerting a thrust on a door or any other flat vertical surface such as a partition, comprising a lower support bar, an intermediate support sole and an upper support bar, and a lower support sole, each of said lower support bar and respectively upper support bar being able to be actuated in telescopic extension, wherein the thrust device is able to be assembled from a ready-to-assemble assembly of at least three parts by two reversible attachment devices, which can be manually activated and deactivated, able to accomplish the reversible attachment of the lower and upper parts of each of said lower support bar and respectively upper support bar and able to maintain said lower support bar and upper support bar in rectilinear alignment when they are actuated in said telescopic extensions.

17. The thrust device according to claim 16, wherein: said lower support bar comprises a lower part comprising a jack, a hydraulic jack, said jack comprising a jack body in which the lower end is attached in a manner articulated in rotation to said lower support sole, and a first jack rod, and an upper part of the lower support bar being attached or able to be attached in a manner articulated in rotation to said intermediate sole, said upper support bar comprises a lower part attached or able to be attached in a manner articulated in rotation to and relative to said intermediate sole, and an upper part of the upper support bar comprising an upper support device, said upper support bar being able to be actuated in telescopic extension to cause the distance between said lower and upper parts of the upper support bar to vary, wherein: said first jack rod is attached or able to be reversibly attached via a first reversible attachment device to said upper part of the lower support bar, the telescopic actuation of said first jack rod being able to cause the distance between said jack body and said upper part of the lower support bar to vary, said first reversible attachment device, when it is activated, being able to maintain said upper part of the lower support bar in rectilinear alignment with said first jack rod to which it is attached during the telescopic actuation of said first jack rod, said upper support bar comprises or cooperates with a second rod extending at least partially in the interior of said upper support bar, said second rod being manually or electrically activated in said telescopic extension to cause said distance between said lower part and upper part of the upper support bar to vary, said second rod being attached or able to be reversibly attached via a second reversible attachment device to said upper part of the upper support bar, said second attachment device, when it is activated, being able to maintain said second lower part and said upper part of the upper support bar, attached to one another in rectilinear alignment relative to one another during the telescopic actuation of said second rod.

18. The thrust device according to claim 17, wherein said first attachment device comprises an upper terminal part of said first jack rod able to cooperate and be reversibly attached to a complementary lower terminal part of said upper part of the lower support bar.

19. The thrust device according to claim 18, wherein said first attachment device comprises a said upper terminal part of said first jack rod with a male shape, outside said jack body when said first jack rod is in the retracted position, able to engage and be reversibly attached in a said complementary lower terminal part with a female shape such as a first cavity of said upper part of the lower support bar.

20. The thrust device according to claim 19, wherein said upper terminal part of the first jack rod and said first cavity are of complementary cylindrical shapes able to enter into one another for activating said first attachment device and deactivate it under manual control, and with the same length dl sufficient to maintain said rectilinear alignment, with a smaller diameter than that of said first jack rod.

21. The thrust device according to claim 17, wherein said first jack rod comprises two telescopic elements.

22. The thrust device according to claim 17, wherein said second attachment device comprises an upper terminal part of said second rod able to cooperate and be reversibly attached to a complementary lower terminal part of said upper part of the upper support bar.

23. The thrust device according to claim 22, wherein said second attachment device comprises a said upper terminal part of said second rod, with a smaller diameter than that of said second rod, able to engage and be reversibly attached in a second cavity at the lower end of said upper part of the upper support bar.

24. The thrust device according to claim 23, wherein said upper terminal part of the second rod and said second cavity are of complementary cylindrical shapes able to enter into one another for activating said second attachment device and deactivate it under manual control and with the same length d2 sufficient to maintain said rectilinear alignment.

25. The thrust device according to claim 17, wherein said second rod comprises a thread which is able to cooperate with a peripheral wheel through which said second rod passes, such that the manual rotation of said wheel causes said relative sliding of said second rod relative to said lower part of the upper support bar.

26. The thrust device according to claim 19, wherein one at least of said first or second attachment device comprises: a) a first or respectively second transverse locking finger able to cooperate with a first or respectively second spring at the bottom of a first or respectively second hollow recess at said upper terminal part of the first or respectively second rod, said first or respectively second locking finger being able to retract by compression of said first or respectively second spring when said first or respectively second rod begins to enter into said first or respectively second cavity, and said first or respectively second locking finger being able to engage into a first or respectively second opening in the tubular wall of said first or respectively second cavity, by extension of said first or respectively second spring when said terminal part of said first or respectively second rod is completely engaged in said first or respectively second cavity for activating said first or respectively second reversible attachment device, b) a first or respective second unlocking pushbutton disposed inside said first or respectively second opening in the tubular wall of said first or respectively second cavity, said first or respectively second unlocking pushbutton being able to be manually controlled to push in and retract said first or respectively second transverse locking finger by compression of said or respectively second spring at the bottom of said first or respectively second hollow recess, for deactivating said first or respectively second reversible attachment device.

27. A ready-to-assemble assembly for forming a thrust device according to claim 17, comprising at least 3 independent parts, with substantially the same length, comprising: (1) a first part comprising said lower part of the lower support bar comprising said jack of which the jack body is attached or able to be attached in a manner articulated in rotation to said lower support sole, said first jack rod is in the retracted position in the interior of the jack body (2) a second part comprising: (a) said upper part of the lower support bar attached in a manner articulated in rotation to said intermediate sole, and (b) said lower part of the upper support bar attached in a manner articulated in rotation to said intermediate sole, said second rod being entered at least partially into the interior of a tubular termination of said lower part of the upper support bar, and (c) said upper part of the lower support bar and said lower part of the upper support bar, being actuated in rotation relative to said intermediate sole so as to be situated one against the other or facing one another in a substantially parallel manner, and (3) a third part comprising said upper part of the upper support bar comprising a said upper support device.

28. A method for exerting a thrust, of at least 50 kN, on a door or other flat vertical surface based on external anchorages, wherein an assembly according to claim 27 is used.

29. The method according to claim 28, wherein steps are carried out wherein: a) said lower support bar is disposed with said jack in the retracted position, inclined by 20 to 35° relative to the vertical, with said intermediate sole supported on said door or flat vertical surface, said jack being in the retracted position supported on a lower external anchorage, the ground, by means of a said lower sole, said upper support bar being actuated in said telescopic extension to be supported against an upper external anchorage, a lintel of the frame of a door or a ceiling or a flat horizontal surface situated above said flat vertical surface, and b) said first movable rod of said jack is operated in extension so as to exert a said thrust on said intermediate sole.

30. The method according to claim 29, wherein the following steps are implemented wherein: before step a), the assembly between the lower part and the upper part of the lower support bar, and between the lower part and the upper part of the upper support bar is carried out by manually activating said first and second attachment devices before placing said lower support bar and respective upper support bar in position against the door, and after step b), said first and second attachment devices are deactivated to respectively separately store said lower part of the lower support bar and said upper part of the upper support bar.

Description

[0053] Other features and advantages of the present invention will be better revealed upon reading the description that follows, not limiting and made in an illustrative manner, with reference to the appended drawings in which:

[0054] FIG. 1 shows the thrust device according to the invention disassembled into 3 independent separate parts,

[0055] FIGS. 2A and 2B show the thrust device according to the invention assembled with said lower anchorages 4 and upper support bar 7 disposed against one another (FIG. 2A) and in position against the door (FIG. 2B),

[0056] FIGS. 3A and 3B show the thrust device according to the invention applied to the door ready to exert a thrust (FIG. 3A), and while thrusting (FIG. 3B),

[0057] FIGS. 4A and 4B show the thrust device according to the invention with said first rod 4-2 in the maximum extension position and the second rod 7c in the maximum extension position, the device being assembled (FIG. 4A) and with the 3 parts 1-1,1-2 and 1-3 disassembled (FIG. 4B),

[0058] FIGS. 5A and 5B show the detail of the first attachment device (FIG. 5A) and of the second attachment device (FIG. 5B)

[0059] FIG. 5C shows the schematic detail in longitudinal section of the lower tubular part 7b of the upper support bar 7 with the second rod 7c,

[0060] FIGS. 6A and 6B show separately the lower part 7b (FIG. 6A) and the upper part 7a (FIG. 6B) of another embodiment of the upper support bar 7, with another embodiment of the second reversible attachment device,

[0061] FIGS. 7A and 7B show the lower part 7b and the upper part 7a of the upper support bar 7 of FIG. 6A-6B, assembled to one another.

[0062] The disassembled thrust device according to the invention, as shown in FIG. 1, comprises 3 independent parts 1-1,1-2,1-3, with lengths L01, L02 and L03 not exceeding L03=750 mm, comprising: [0063] (1) a first part 1-1 comprising a lower part 4a of the lower support bar 4 comprising a jack, of which the jack body 4-1, attached on the side of its lower end to a lower support sole 5 able to rest on the ground 10 by a device for articulation in rotation 4r1, the first telescopic jack rod 4-2 being in the maximum retraction position inside the jack body so that only an upper terminal part 4-2c of the jack rod extends beyond the jack body by a distance d1 of approximately 100 mm, and [0064] (2) a second part (1-2) comprising:
(a) an upper part 4b of the lower support bar 4 attached at one end by a device for articulation in rotation 4r2 to said intermediate sole 6 and the other end of which contains a first cavity (not visible in FIG. 1) able to receive said upper terminal part 4-2c of the jack rod and to attach itself to it by a first reversible attachment device explained hereafter, and
(b) the lower tubular part 7b of the upper support bar 7 attached at one end by a device for articulation in rotation 7r1 to said intermediate sole 6, a second telescopic rod 7c being entered as far as possible into the interior of said lower tubular part 7b by actuation in rotation as described hereafter by means of a wheel 7e disposed at the other end of said lower tubular part 7b, of which only a terminal part 7d with a length d2 of approximately 100 mm of said second rod extends past said lower tubular part 7b, and
(c) said upper part 4b of the lower support bar 4 and said lower part 7b of the upper support bar 7, here being actuated in rotation relative to said intermediate sole so as to be located disposed one against the other in a substantially parallel manner, and [0065] (3) a third part 1-3 comprising an upper part 7a of the upper support bar 7 comprising, at its upper end, an upper support device 7a1 and in its lower terminal part a second cavity (not visible in FIG. 1) able to receive said terminal part 7d of said second jack rod and attach itself to it by a second reversible attachment device explained hereafter.

[0066] In FIGS. 2A and 2B, the thrust device according to the invention is shown assembled with said lower support bar 4 and upper support bar 7, assembled and disposed folded against one another (FIG. 2A) and deployed in rotation with the intermediate sole 6 supported against the door 2, the lower support bar 4 inclined by an angle of approximately α=20 to 35° relative to the horizontal from the lower sole 5 supported on the ground 10, and the upper support bar 7 vertical against the door (FIG. 2B), said first and second rods being in the maximally retracted position, each assembled bar 4 and 7 has a length L1′=L1+L2 and respectively L2′=L3+L4 of no more than 1500 mm.

[0067] In FIGS. 3A and 3B, the thrust device 1 according to the invention is shown assembled and applied to the door, ready to exert a thrust with said first rod still in the retracted position and said second rod 7c in the extended position to block the upper support device 7a1 at the upper end of the upper support bar 7 against the lintel 2a of the door (FIG. 3A), and during thrusting with said first rod 4-2 in the extended position and the second rod 7c in the extended position (FIG. 3B).

[0068] FIGS. 4A-4B and 5A-5C allow a better description of the structure and the operation of the thrust device 1 of the invention.

[0069] In FIG. 4A, the jack rod 4-2 is shown in maximum extension, itself consisting of two telescopic elements 4-2a and 4-2b with lengths L1a and L1b such that L1a+L1b is greater than L1, the length of the jack body, with L1a and L1b less than L1. The upper terminal part 4-2c is disposed at the end of the second element 4-2b of the jack rod 4-2.

[0070] FIG. 5A shows the detail of the first attachment device, the jack 4 being in the retracted position with only the terminal part 4-2c, with a smaller diameter than the second jack rod element 4-2b extending outside the jack body 4-1. The terminal part 4-2c has a diameter and a length dl substantially identical to those of the first cylindrical cavity 4b1 at the lower end of the upper part 4b of the lower support bar.

[0071] The first attachment device 4c, 4d between the first rod 4-2 and the upper part 4b of the lower support bar 4 comprises: [0072] a) a first transverse locking finger 4c1 able to cooperate with a first spring 4c2 at the bottom of a first hollow recess 4c3 in said upper terminal part 4-2c of the first rod 4-2, said first locking finger 4c1 being able to retract by compression of said first spring 4c2 when said first rod 4-2 begins to enter into said first cavity, and said first locking bar 4c1 being able to engage in a first opening 4d2 in the tubular wall of said first cavity 4b1, by elastic extension of said first spring 4c2 when said terminal part 4-2c of the first rod 4-2 is completely engaged in said first cavity 4b1 for activating said first reversible attachment device, [0073] b) a first unlocking pushbutton 4d1 disposed inside said first opening 4d2 in the tubular wall of said first cavity 4b1, said first unlocking pushbutton 4d1 being able to be manually controlled to insert and retract said first transverse locking finger 4c1 by compression of said first spring 4c2 at the bottom of said first hollow recess 4c3, for deactivating said first reversible attachment device and thus be able to remove the terminal part 4-2c of the jack rod outside of the first cavity 4b1.

[0074] In FIG. 4B, the thrust device according to the invention is shown with said second rod 7c in the maximum extended position with its upper terminal part 7d with length d2, with a smaller diameter than the second rod 7c. In FIGS. 5B and 5C, the threading of the second rod 7c is shown, and an annular wheel 7e that can be actuated in rotation relative to the longitudinal axis XX′ of the upper support bar 7, disposed at the upper end of the tubular wall of the lower part 7b of the upper support bar 7 to form a ball screw system with the second threaded rod 7c. The threading of the second rod 7c cooperates with the wheel 7e so that a manual rotation command of the wheel 7e causes sliding in longitudinal translation along the axis XX′ of the second rod partially 7c1 inside the tubular wall 7b and through the wheel 7e to extend partially 7c2 over a length d3 outside the lower tubular part 7b. In FIG. 5B, the second rod 7c is in the maximum retracted position with only the upper terminal part 7d extending out of the lower tubular part 7b of the upper support bar.

[0075] FIGS. 5B and 5C show the detail of the second attachment device 7g, 7h between the terminal part 7d of the second rod 7c and the second cylindrical cavity 7a2 at the lower end of the upper part 7a of the upper support bar with substantially identical diameter and length d2. The second attachment device 7g, 7h comprises: [0076] a) a second transverse locking finger 7g1 able to cooperate with a second spring 7g2 at the bottom of a second hollow recess 7g3 in the upper terminal part 7d of the second rod 7c, said second locking finger 7g1 being able to retract by compression of said second spring 7g2 when said second rod 7c begins to enter into said second cavity 7a2, and said second locking finger 7g1 being able to engage into a second opening 7h2 in the tubular wall of said second cavity, by extension of said second spring 7g2 when said terminal part 7d of said second rod 7c is completely engaged in said second cavity for activating said second reversible attachment device, [0077] b) a second unlocking pushbutton 7h1 disposed inside said second opening 7h2 in the tubular wall of said second cavity, said second unlocking pushbutton 7h1 being able to be manually controlled for inserting and retracting said second transverse locking finger 7g1 by compression of said second spring 7g2 at the bottom of said second hollow recess 7g3, for deactivating said second reversible attachment device and thus be able to remove the terminal part 7d of the second rod 7c outside of the second cavity 7a2.

[0078] In FIG. 6A, the lower part 7b of another embodiment of the upper support rod 7 is shown, with a said upper terminal part 7d in the form of a cavity and the second rod 7c in the retracted position inside the tubular wall of the lower part 7b of the upper support bar 7. The sliding of the second rod 7c being able to be controlled by an electric motor 8 supplied by a battery 8a disposed inside the tubular wall of the lower part 7b of the upper support bar 7. The motor 8 is disposed below the second rod 7c, which the engine 8 is able to cooperate so as to be able to turn the screw which is consists of the second rod 7c, causing its relative translation by sliding relative to the wheel 7e with which it cooperates. In the event of failure of the electric motor or of the battery, it remains possible to manually actuate the wheel 7e in rotation for turning the second rod 7c, causing its relative translation by sliding.

[0079] Shown in FIG. 6B is the upper part 7a of said other embodiment of the upper support bar 7, the lower terminal part 7a2 is able to engage into the cavity of said upper terminal part 7d the lower part 7b of FIG. 6A.

[0080] In FIGS. 7A and 7B is shown another embodiment of the second reversible attachment device 7h′, 7g′ between (1) the lower terminal part 7a2 of the upper part 7a of said other embodiment of the upper support bar 7 and (2) the upper terminal part 7d in the form of a cavity of the second rod 7c. The lower terminal part 7a2 comprises a hollow annular groove 7g′ able to receive the end of a locking finger 7h′. The finger 7h′ cooperates with an elastic means in an opening in the tubular wall of the cavity 7d so that the finger engages in the groove 7g′ when the terminal part 7a2 is engaged in a complementary manner in the cavity 7d. And, by pulling on the finger 7h′, it can be removed from the groove 7g′, which allows removing the terminal part 7a2 outside the cavity 7d.