Pedestal head for a raised-floor support device and raised-floor support device comprising such a pedestal head

Abstract

Disclosed is a pedestal head for a raised-floor support device, comprising a drawn plate (6) having a set of raised walls (11, 12) which in pairs delimit channels (7, 8, 9, 10) for guiding and bracing cross-members (T) of the raised floor. The plate comprises snap-fitting lugs (14) each formed from the plate and each intended to snap-fit into a cross-member.

Description

[0001] DESCRIPTION

[0002] TITLE: JACK HEAD FOR A TECHNICAL FLOOR SUPPORT DEVICE AND TECHNICAL FLOOR SUPPORT DEVICE COMPRISING SUCH A JACK HEAD

[0003] The present invention relates to the fitting out of so-called "technical" premises such as, in particular, but not exclusively, data centers, also known by the Anglo-Saxon term "data center".

[0004] It relates more specifically to technical floor support devices for such data centers.

[0005] Of course, the invention is not limited to the installation of technical floors for data centers but covers, in general, technical floor support devices for other applications, in particular for office equipment. It relates, in general, to technical floor support devices which make it possible to install a technical floor by creating a void or plenum of sufficient height to accommodate various types of electrical supply, telecommunications, or air conditioning networks.

[0006] In the state of the art, technical floor support devices generally comprise a jack head which is mounted on a tubular foot equipped with a base which rests on a slab, generally made of concrete.

[0007] The head has an adjustable height and is equipped with wedging devices into which, from a certain height and / or a certain load to be supported, crosspieces are inserted on which slabs are placed.

[0008] In this regard, reference may be made to document FR 2 662 728 which describes such a floor support for a technical room, particularly for a computer room.

[0009] The device described in this document uses positioning keys which ensure the locking of the crosspieces by inserting themselves into perforations made in said crosspieces, after these have been positioned on the jack head and in particular in the wedging devices.

[0010] This type of device is advantageous in that the wedging devices ensure efficient positioning of the sleepers.

[0011] In addition, the positioning keys ensure effective holding of the crosspieces on the jack head.

[0012] However, this type of device has a number of major drawbacks.

[0013] Firstly, it requires drilling the crosspieces with sufficient precision to allow the positioning keys to be inserted.

[0014] The geometry of the positioning keys must be sufficiently precise to allow them to be wedged into the crosshead holes and onto the jack head.

[0015] Furthermore, this type of device comprises three parts, namely the jack head mounted on the tubular foot, on the one hand, and two positioning keys, on the other hand, for holding two pairs of crosspieces, at right angles, on each jack head.

[0016] Finally, the cylinder head is made by stamping a cylindrical plate in order to create the wedging devices, which requires the use of specific tools and involves very significant material stretching.

[0017] The aim of the invention is therefore to overcome all or part of these various drawbacks and, in particular, to propose a jack head for a technical floor support device which, firstly, does not require precise drilling of the crosspieces for the purpose of locking the crosspieces on the jack head, while reducing the number of parts of the jack head.

[0018] The invention therefore relates to a jack head for a technical floor support device, comprising a stamped plate comprising a set of upright walls delimiting two by two guide and wedging corridors for the technical floor crosspieces.

[0019] The plate comprises snap-in lugs, each formed from the plate and each intended to snap into a crosspiece. Unlike the prior art, which requires the use of positioning keys that are inserted into the crosspieces and clip onto the jack head, the crosspieces are held in place by means of the lugs that snap into the crosspieces, the guidance and wedging of the crosspieces, in particular during snap-in, being obtained by means of the raised walls of the plate.

[0020] Advantageously, the width of each guide corridor is greater than the corresponding width of a sleeper, the walls of each guide and wedging corridor comprising pins for centering the sleepers.

[0021] Preferably, the pins are made by stamping, from the plate.

[0022] In one embodiment, the walls have a generally triangular shape and include a sloping edge.

[0023] For example, the sloping edge has a downward slope in the direction of the free lateral end of the cylinder head.

[0024] Alternatively, the sloping edge has an upward slope in the direction of the free lateral end of the cylinder head.

[0025] In one embodiment, two juxtaposed guideways comprise a common wall having a rounded free edge formed by stamping a circular plate.

[0026] In one implementation mode, the sleepers have, on their upper part, guide tabs directly coming from the sleeper, intended to guide and wedge the floor slabs.

[0027] Alternatively, when the crosspieces do not have the tabs mentioned above, according to another characteristic of the jack head according to the invention, the latter further comprises a wedging plate intended to cover the crosspieces mounted on the head and comprising tabs for guiding and wedging floor slabs.

[0028] The invention also relates to a raised floor support device, comprising a jack head as defined above inserted in a vertically adjustable manner into a tubular foot comprising an upper end by which the jack head is mounted in the tubular foot and a lower end provided with a base.

[0029] Other aims, characteristics and advantages of the invention will appear on reading the following description, given solely by way of non-limiting examples, with reference to the appended drawings in which:

[0030] - [Fig 1] is a general perspective view of a technical floor support device according to the invention;

[0031] - [Fig 2] is a side view of a jack head and cross members of the device of Figure 1;

[0032] - [Fig 3] is a top view of a jack head according to the invention;

[0033] - [Fig 4] shows the use of a shim plate;

[0034] - [Fig 5] illustrates an alternative embodiment of a jack head in accordance with the invention;

[0035] - [Fig 6] illustrates another embodiment of a jack head according to the invention.

[0036] Reference is first made to Figure 1 which illustrates a technical floor support device in accordance with the invention, as well as to Figures 2 and 3 which illustrate a first embodiment of a jack head in accordance with the invention.

[0037] In these figures, the support device and the jack head are shown in a supposedly vertical position of use in which it ensures the guidance and wedging of T crosspieces of the technical floor.

[0038] The technical floor support device illustrated in Figure 1 comprises a jack head 1 mounted in a vertically adjustable manner on a tubular foot 4 comprising an upper end by which the jack head 1 is mounted on the tubular foot and a lower end provided with a base S by which the device rests on a slab, generally made of concrete.

[0039] With reference to Figure 2, the jack head comprises a threaded rod 2 which comprises a lower end inserted into the tubular foot T and an upper end provided with a base 3, and a stamped plate 6 welded to the base 3.

[0040] A nut 5 ensures the adjustment of the vertical position of the jack head relative to the tubular foot 4.

[0041] The base 6 of the cylinder head is made in one piece by stamping a previously cut steel plate.

[0042] The stamped plate 6 comprises a set of guide and wedging passages 7, 8, 9 and 10 (figure 3) each formed by folds 11 and 12 which form walls vertically relative to the plane of the plate 6 between which the crosspieces T engage.

[0043] In the illustrated embodiment, the jack head ensures the guidance and wedging of three T crosspieces arranged perpendicularly, one snapped onto two snap-on lugs 14, the other two being snapped perpendicularly.

[0044] The plate 6 thus comprises four perpendicular guiding and wedging passages two by two. The distance between two walls 11 and 12 of the same guiding and wedging passage is substantially greater than the width of the crosspieces so as to leave a clearance which, as will be described later, provides a degree of freedom to the crosspieces in order to facilitate their disassembly.

[0045] The walls 11 and 12 of each guide and wedging passage are however provided with pins, such as 13, produced by stamping, which extend transversely, projecting and facing each other to come to bear against the crosspiece.

[0046] Furthermore, as indicated previously, the plate 6 is provided, at the location of each guide and wedging corridor, with a snap-in lug 14 formed by cutting and folding the plate in the direction of the center line of each corridor.

[0047] Referring in particular to Figures 1 and 2, the snap-in lug 14 comprises two upper snap-in ramps 15 and 16 extended downwards by two edges 17 and 18.

[0048] The crosspieces have, for their part, a profile shape with a generally square or rectangular cross-section, and comprise in the lower part an axial slot 19 bordered laterally by two longitudinal folds 20 and 21 with a substantially rounded edge in order to facilitate the snapping of the lug 14 into the longitudinal slot 19.

[0049] As can be seen, the device which has just been described comprises two parts, namely the jack head 1 and the tubular foot 4 which supports the jack head, which jack head is entirely made by stamping a steel plate welded to the base 3.

[0050] This device is used simply by adjusting the height of the jack head relative to the tube by acting on the nut, by positioning the crosspieces in the guide and wedging passages and by exerting a force on the crosspieces so as to snap them into the lugs 14.

[0051] It will be noted in this respect that the tubular foot 4 is advantageously provided with an added insert fitted into the upper end of the tube, this insert being provided with lugs, for example three in number, while the face of the nut bearing on the tube has radial grooves or, in general, indentations in which the lugs engage in order to ensure rotational locking of the nut 5.

[0052] In order to facilitate the installation of slabs directly on the sleepers, in the embodiment visible in Figure 1, the sleepers are each provided, on their upper face, with axial vertical tabs 24 obtained by cutting and stamping and which form a lateral support stop for the slabs.

[0053] These tabs are positioned equidistant from the longitudinal edges of the sleeper. However, it is not necessary for them to be positioned with great precision on the sleepers, unlike the state of the art which uses keys. They also allow, if necessary, to rectify the straightness of the sleepers during the drilling / stamping operation of the sleepers.

[0054] Alternatively, as illustrated in Figure 4, the tabs 24 may be formed on an attached shim plate 22 which may be mounted on the cross members.

[0055] The plate 22 is made from a plate, for example made of steel, and has right-angled side edges 23a intended to engage between two crosspieces in order to wedge the plate in position, and side blanks 23b bearing against the edges of the crosspieces. The upper face of the plate is provided with the tabs 24, these tabs being judiciously positioned so as to constitute guiding and support elements for slabs.

[0056] In the embodiment described with reference to figures 1 to 3, the plate of the jack head comprises four guide and wedging passages each formed of two vertically erected walls.

[0057] In the embodiment of Figures 1 to 3, the walls 11 and 12 have a triangular shape and, more precisely, a right triangle shape, the hypotenuse of which forms a downward slope towards the free end of the guide and wedging chamber.

[0058] Of course, the invention is not limited to such an embodiment. Indeed, the invention does not depart from the scope of the invention when the walls have another shape.

[0059] As visible in Figure 5, which illustrates another embodiment of a head according to the invention, each wall constituting a guide and wedging chamber can form a downward slope towards the middle zone of the wedging head or, in other words, upward towards the free end of the jack head.

[0060] In the embodiment of figures 1 to 4 the plate is made by cutting and stamping a square steel plate.

[0061] Of course, it is also possible, as a variant, to make the plate from a plate having a different shape so as to give the walls and, consequently, the guide and wedging passages a different shape.

[0062] Thus, as visible in Figure 6, the guide and wedging corridors can be formed from walls common to two corridors so as to obtain a straight and horizontal upper side in order, in particular, to improve the guidance and wedging of the sleepers.

[0063] As shown in dotted lines, the plate can still be formed from a round steel plate.

[0064] Finally, it will be noted that, in the various embodiments which have been described, the disassembly of the crosspieces is particularly easy to implement using a disassembly key. It is, in fact, simply necessary to insert a disassembly key between the longitudinal folds 20 and 21 of the crosspiece, in order to separate the facing edges, then to release the crosspiece.

[0065] As previously stated, this deformation is facilitated by the degree of freedom created by the increased width of each guide and wedge chamber.

Claims

CLAIMS 1. Jack head for a technical floor support device, comprising a stamped plate (6) comprising a set of walls (11, 12) erected delimiting two by two corridors (7, 8, 9, 10) for guiding and wedging crosspieces (T) of the technical floor, characterized in that the plate comprises snap-on lugs (14) each formed from the plate and each intended to snap into a crosspiece.

2. Cylinder head according to claim 1, in which the width of each guide passage is greater than the corresponding width of a crosspiece, the walls of each guide and wedging passage comprising pins (13) for centering the crosspieces.

3. Cylinder head according to claim 2, in which the pins are produced by stamping.

4. A jack head according to any one of claims 1 to 3, wherein the walls have a generally triangular shape and include a sloping edge.

5. A cylinder head according to claim 4, wherein the sloping edge has a downward slope in the direction of the free lateral end of the cylinder head.

6. A cylinder head according to claim 4, wherein the sloping edge has an upward slope in the direction of the free lateral end of the cylinder head.

7. Cylinder head according to any one of claims 1 to 3, in which two juxtaposed guide and wedging passages comprise a common wall having a rounded free edge formed by stamping a circular plate.

8. Jack head according to any one of claims 1 to 7, further comprising a wedging plate (22) intended to cover the crosspieces mounted on the head and comprising tabs for guiding and wedging floor slabs.

9. Raised floor support device, characterized in that it comprises a jack head according to any one of claims 1 to 8 inserted in a vertically adjustable manner into a tubular foot (4) comprising an upper end by which the jack head (1) is mounted on the tubular foot and a lower end provided with a base (S).

10. Floor support device according to claim 9, further comprising crosspieces (T) provided with axial vertical tabs (24) obtained by cutting and stamping and which form a lateral support stop for the covering slabs.

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