EP1197611A1 - Floor plate for dismantable floor - Google Patents

Abstract

Ready made flooring plate has an essentially square surface comprising two layers. The upper layer forms a continuous covering layer and the lower layer is preferably in the form of a panel of base plates. A device (90, 92) for forming a wear-resistant denticulation in the surface of the flooring plate is provided on the sides of the joint (24). Preferred Features: The device for forming the denticulation is formed by a lower layer or by a pair of surfaces directed symmetrically to a surface vertical to a joint.

Description

The invention relates to prefabricated floor slab Formation of a removable, preferably surface elastic flooring, according to the preamble of Claim 1, and on a floor based on Such prefabricated floor panels can be produced.

Such a finished floor panel is for example known from document DE 195 08682 A1. She has one in essentially rectangular base area consisting of two Layers exist, of which the upper one is continuous Forms cover layer and the lower layer preferably in Form of a field of platen is present. The platen are at least partially over the side Top layer over, being in the bottom layer, preferably sunk in the area of a corner section as well in the middle section of the adjoining rectangular butt edge Train parts in the form of flat, longitudinally elastic Form springs are pivotally supported. The Form springs are used to cling to the abutting Finished panel in snap engagement with one there in predetermined Distance to the butt joint of the locking bolt brought.

Removable sports or multi-purpose hall floors will be increasingly used. With the help of those described above Clamping technology creates a mobile sports floor that at short notice in multi-purpose, trade fair, athletics or Ice rinks can be built, creating multi-purpose halls be used for extended use. The floor elements such a removable sports floor are in Interaction with the substructure is now so sophisticated that a surface-elastic sports floor will be created shortly, that meets the requirements of DIN 18032 Part 2. For the economic success of such a mobile sports floor it depends among other things with which personnel and Such a sports floor can be laid in time. Further It is important how the floor is laid on the Substructure behaves so. B. whether it leads to faults or Slipping of the individual floor slabs tends.

There are various ways to prevent slipping Assembly of the elements of such sports floors known which are usually directly on one with foam covered sub-floor, but in some cases immediately only with the interposition of a Separating layer, for example in the form of a thin one Plastic film to be laid on parquet. Both Requirements for the lanyards and assembly aids the first step is a low-tension assembly Place that not even with prolonged use of the floor Warping may result, particularly in the joint area the floor tiles could be problematic. Another criterion is the ease of assembly and the formation of the connecting means such that a repeated use, d. H. a use of the Floor panels after repeated assembly and disassembly of the floor is possible without problems. Finally, one criterion that to the connecting devices for the floor slabs is the laying accuracy. Mobile sports floors are made up of a large number, for example of several a hundred floor tiles put together so that Assembly errors over a length of several tens of meters also affect the external appearance of the floor can.

With known connecting devices for removable Soils became these single criteria described above Taken into account. An assembly technique, however, that the sometimes conflicting criteria such as assembly time, Installation accuracy, high connecting force, protection the floor slab edges and economy of manufacture the floor slabs were still there.

For example, DE-GM 83 02 887 is a connecting device the floor panels of a removable Soil known, according to the neighboring soil elements by means of several brackets, the bottom of each Reach over joint and in aligned recesses the bottom plates are held together become. A disadvantage of this known connection device is that the connecting brackets in the assembled Condition of the floor slabs, d. H. then when the each other floor panels to be joined are butted together, are no longer accessible without lifting one of the base plates. It is not just a multitude of parentheses required, but it consists in dismantling the known removable hall floor the risk that the Side edges of the base plates are damaged.

With the connection technology according to the generic term of Claim 1 as e.g. in document DE 195 08682 A1 described, it succeeds in considering the criteria Ease of installation, functional reliability, protection of the Floor panels and mounting accuracy equally fulfill. The floor slabs are precisely defined Points tied together, as is the case with the proposal according to DE-OS 33 36 464 is the case. The one used preferably multiple S-shaped curved spring has the particular advantage that it is in the direction of Height of the finished floor panels very little space claims that, however, it does so with simple means can be bent so that already with material cross sections of about 4 mm clamping forces of about 1200 N. applies. The bending of the form spring has the advantage that this holding force due to the longitudinal elasticity the form spring even then within predetermined limits remains when the clamping points due to manufacturing tolerances positionally more or less strongly of the target position. Overuse of the Pre-finished floor panels are effective in this way locked out. Due to the pivotable mounting of the Form spring on a floor element can tension the neighboring Elements in the end position of the floor elements done, d. that is, briefly lifting one Floor element for assembly or disassembly or for loosening the connecting device is no longer required. It has also been shown that due to the high holding force in spite of the simple shape of the shaped spring, there is small number of clamping points is completely sufficient around the floor elements more precisely even when used for a long time To keep alignment with each other. Eventually it turns out through the special design of the form spring in connection with the snap effect, d. H. with the wanted Snapping two spring legs into the Locking bolt on the floor element to be coupled Mounting security effect. Even inexperienced fitters are in this way purely acoustically able to determine whether a firm locking of the form spring with the locking bolt has taken place

In view of that described above Floors can be used very versatile and a large one Need to record the load spectrum, there is a need to Pre-finished floor panels to be designed so that under Maintaining the simplest assembly handles one greatest possible stability of the soil can be achieved, which too does not lose quality if the floor frequently and is dismantled. The object of the invention is therefore to create a prefabricated floor slab that this need is satisfied.

This object is achieved by the features of claim 1 solved.

According to the invention on the part of the rectangular butt edge vertically running edges each one Device for making one in the area of Pre-finished floor slab with fixed toothing butted adjacent plate is provided. This ensures that those who are thrust together Ready-made floor panels, which are still using only three tension springs, and thus with few Assembly handles precisely positioned to each other cannot twist against each other, if the floor is at an angle to the surface directed force is loaded, for example what then occurs when doing sports on the floor or when Vehicles are accelerated and braked on the ground.

Advantageous further developments are the subject of Dependent claims.

If the device for producing the gearing of the lower layer is formed, the device-related effort kept very low. It is only in sections a redesign of the lower one Shift required.

A particularly simple design of the gearing you get when selected platen in the area the perpendicular to the rectangular edge Butt edges are shaped so that they are the device for Form the manufacture of the toothing.

It has been shown that the facility for Production of the toothing is particularly effective if it is formed by a pair of mating surfaces that symmetrical to a vertical one on the butt joint Level. Maximum ease of installation is still there. The Fitting surfaces are correspondingly advantageous Formation of plane-parallel surfaces formed, since hereby simplifies the manufacture of the pass tabs. However, it is also possible to use the inclination of the mating surfaces an additional mutual Position stabilization of adjacent prefabricated flooring panels too to reach.

The design according to the invention is particularly then of advantage if the floor elements according to claim 6 are trained. The one provided below the top layer Field of preferably square plywood panels is in the Angle to the side edges of the top layer of the Finished floor panel arranged, and thus at an angle to the tensile force of the form spring pivoted over the butt joint. The floor laid in this way has therefore no preferred Sliding direction, not even when the finished floor panels on a hard surface, e.g. B. on Parquet only with the interposition of a thin one Plastic film are laid as a separating layer. The field of Plywood panels in the lower layer will result automatically to a sawtooth-like protrusion of the plates of the lower layer arranged at the edge, whereby a partial overlap of the floor slabs in the area the butt joints take place so that the load-bearing capacity of the Floor is further increased.

If the mating surfaces are formed by surfaces that can be produced by means of a face mill, the Manufacturing costs are kept as low as possible, whereby preferably a template-controlled copy-milling process Application.

The longitudinally elastic shaped spring is preferably in one plane parallel to the plane of the planar element can be pivoted supported, preferably stored and has one End an eye that works in conjunction with a mounting bolt forms the swivel. The form spring can advantageously for articulation on the floor plate are used, the articulation preferably such that the eye with a certain frictional force of a mounting bolt is held. this leads to Ease of transportation, since the form springs are not unintentionally swivel sideways over the floor plate can. This also increases the risk of injury prevented. At the same time, there is the advantage that the Form springs already captive on the floor element can be attached and in this state Assembly site can be brought. The assembly times are significantly reduced.

The form spring and ideally the entire connecting device is preferably sunk in the bottom of the Finished floor panels arranged so that a clean surface the soil is guaranteed and also an immediate Installation of the floor panels on parquet preferably with the interposition of a separating layer, without leaving scratch marks.

An advantageous design of the fastening bolts and thus the locking bolt is the subject of the claim 14. It has been shown that these bolts easily can be made of plastic without the permissible To exceed stresses. About the choice of the diameter and the contact surface of the form spring control the contact voltages safely.

For additional fixation of the relative position of two abutting precast floor panels can die Finished floor slab with a fitting, which is attached to one end of one of the surface elements and which is provided with a pin plate, which in a recess of an abutting element can be immersed. This additional fixing device is in addition to one Level fixation also a pre-fixation of the elements to each other enabled before tightening by means of the form spring.

Two are sufficient per prefabricated floor slab Form springs and two locking bolts, which are preferred are mounted at the points described in claim 1, position immovable around the individual floor elements to fix each other.

The design and arrangement of the fitting according to Claims 18 and 19 enables its precise pre-assembly, the one extending away from the peg plate L-shaped section of the fitting with the connecting leg and the mounting plate part of the end face or the underside of the cover layer of the floor element form. The special embedding of the fitting ensures its constant relative position to the associated one Top layer even under high loads.

A particularly reliable fixation of the floor elements you get relative to each other when on a narrow side a rectangular floor element two of the fittings to be arranged while on the opposite Narrow side, i.e. the other stroke, corresponding Recesses for receiving the pin plate of an abutting one Floor element are provided.

On the finished floor panels are preferably in the area each form spring and each fastening bolt edge recesses trained, whose bases on the Swivel range of the form spring are adjusted so that the peripheral edges the edge recesses at a short distance from Form spring are arranged in the end positions. In this way is the bearing surface of the finished floor panel by the Marginal recesses only marginally reduced, so that a secure circulation is guaranteed. It turned out to be proven particularly advantageous, the edge recesses, such as proposed in claim 22, approximately rectangular for the Form spring and approximately triangular for the fastening bolt train.

Other advantageous developments of the invention are the subject of further subclaims.

Fig. 1

eine perspektivische Ansicht eines demontierbaren, flächenelastischen Sportbodens unter Verwendung von Fußboden-Fertigplatten nach dem Stand der Technik;

Fig. 2

eine ausschnittsweise Ansicht einiger bei der Ausführungsform nach Figur 1 verwendeter Fußboden-Fertigplatten von unten;

Fig. 3

eine schematische Ansicht der fugenversetzt verlegten Fußboden-Fertigplatten zur Verdeutlichung des Spannprinzips;

Fig. 4

in vergrößertem Maßstab eine schematische Ansicht einer Ausführungsform der erfindungsgemäßen Verzahnung zweier auf Stoß verlegter Fußboden-Fertigplatten;

Fig. 5

eine perspektivische Teil-Ansicht von unten zweier erfindungsgemäß gestalteter FußbodenFertigplatten vor dem Zusammenfügen zum Schließen der Stoßfuge;

Fig. 6

im vergrößerten Maßstab die Einzelheit der Verzahnung im Bereich der Stoßkanten;

Fig. 7

eine Unteransicht auf ein Ausführungsbeispiel dreier zusammengefügter erfindungsgemäß gestalteter Fußboden-Fertigplatten;

Fig. 8

die Einzelheit VIII in Figur 7;

Fig. 9

den Teilschnitt IX-IX in Figur 8;

Fig. 10

eine Ansicht der Formfeder;

Fig. 11

eine Schnittansicht des Verriegelungs- bzw. Befestigungsbolzens;

Fig. 12

eine Draufsicht des Verriegelungsbolzens;

Fig. 13

eine Detaildarstellung der Einzelheit XVI in Figur 7 mit einer Verbindungstechnik gemäß einer weiteren Variante;

Fig. 14

einen Teilschnitt entlang der Linie Z-Z in Fig. 13;

Fig. 15

eine Unteransicht eines Beschlags aus Fig. 14;

Fig. 16

eine räumliche Darstellung einer Ausnehmung zur Aufnahme des Beschlags aus Fig. 15.

Exemplary embodiments of the invention are described in more detail below with the aid of schematic drawings. Show it:

Fig. 1

a perspective view of a removable, surface-elastic sports floor using prefabricated floor panels according to the prior art;

Fig. 2

a partial view of some of the flooring panels used in the embodiment of Figure 1 from below;

Fig. 3

a schematic view of the staggered prefabricated floor panels to illustrate the principle of clamping;

Fig. 4

on a larger scale a schematic view of an embodiment of the toothing according to the invention of two prefabricated floor panels laid in abutment;

Fig. 5

a partial perspective view from below of two finished floor panels according to the invention before assembly to close the butt joint;

Fig. 6

on an enlarged scale, the detail of the toothing in the area of the abutting edges;

Fig. 7

a bottom view of an embodiment of three assembled finished floor panels according to the invention;

Fig. 8

detail VIII in Figure 7;

Fig. 9

the partial section IX-IX in Figure 8;

Fig. 10

a view of the form spring;

Fig. 11

a sectional view of the locking or fastening bolt;

Fig. 12

a top view of the locking bolt;

Fig. 13

a detailed representation of the detail XVI in Figure 7 with a connection technology according to another variant;

Fig. 14

a partial section along the line ZZ in Fig. 13;

Fig. 15

a bottom view of a fitting from Fig. 14;

Fig. 16

a spatial representation of a recess for receiving the fitting from FIG. 15.

Fig. 1 shows how a mobile sports floor for multi-purpose, Exhibition, athletics or ice halls relocated becomes. On an underbody not shown for example, cement screed becomes one elastic layer 20 applied by a PUR composite foam can be formed. On this elastic Layer are rectangular as a load distribution layer Prefabricated floor panels 22 offset, i.e. so misplaced that the butt joints 24 of the narrow sides are offset. you recognizes that the floor panels 22 in the area the butt joint partially overlap each other, so that too good load-bearing behavior of the floor in the area of the joint is achieved. It is crucial that the finished floor panels 22 can be mounted so that they are even at high Loads immovable on the elastic layer 20 or stay on the sub-floor, and even with longer Do not discard usage. For this purpose are the finished floor panels designed in a special way and with a special connecting device equipped below to be described in more detail.

As can also be seen from FIG. 1, measures are seized to a mutual in the area of the butt joint To provide overlap of the floor elements.

Fig. 2 shows the view of some floor panels from underneath. The prefabricated floor slab is known per se Way of two layers, namely one the topping forming, continuous cover layer 28, for example of special building plywood panels according to DIN 68705 with one Covering z. B. from PVC or from a sports parquet can be formed. Of course there are others too Materials possible. The top layer has, for example a thickness of approximately 12 mm, one of which is a veneer plywood panel with a thickness of approx. 9 mm can be used.

At the bottom of this top cover layer is one bottom layer in the form of field-like laid Grid plates, for example in the form of essentially square support plates 30, 30 * attached, the for example, can be formed from plywood panels. The connection is preferably made by gluing and / or parenthesis. The strength of these plates lies again at approx. 12 mm.

The support plates 30, 30 * are arranged so that they at an angle of 45 ° to the side edges 32 of the cover layer 28 run and between them ventilation ducts 34, 34 * a width of 20 or 10 mm. The marginal Plates 30, the dimensions of about 190 x 190 mm larger than the inner support plates 34 * are formed and form the edge tabs sawtooth-like with projections 36 from the side edges 32 before, so that a mutual overlap in this area assembled flooring panels 22 occurs.

In the individual floor panels 22 is one Clamping device for clamping together on impact integrated plates integrated, based on the figure 3 to be explained in more detail. The jig is in carried out as follows:

In the area of two diagonally opposite one another Corners 42, 44 are each a clamping point 46. In the upper left corner according to FIG. 3 is a first Swivel axis 40 for a schematically indicated as an arrow Form spring 48 and substantially in the middle of the Fig. 3 is the upper rectangular edge 24 * a second pivot axis 38 for a further form spring 48.

The form springs 48 come before assembly within the outline of the finished floor panel formed by the side edges 32 22 to lie. In this state, the Ready-made floor tiles 22 placed on the ground. The lateral distance dimension A of the clamping point 46 from the side edge 32 or 24 * corresponds to dimension A of the side distance of the Swivel axis 40 from the side edge 32 or 24 *. The sum of the Dimensions B and C, d. H. the distances of the pivot axis 38 from Side edge 32 and the clamping point 46 from the opposite Side edge 32 * matches the shape of the shaped spring 48 adapted so that when snapping in U-turn of the form spring 48 in the clamping point 46 a predetermined Tensile force results. To describe the further details the connection device is shown below the individual representations according to Figures 7 to 12 referenced.

Figure 2 shows how E conventionally the platen 30-1, 30-2 and 30-3 are arranged in the region of the butt joint 24. One recognises, that an overlap of the butt joint with triangular Sections are carried out in such a way that there is a lateral distance between the Plates remain.

The design of the corresponding Plates 30-1, 30-2 and 30-3 is shown in Figure 4 shown. The view shows that the platen is like this are designed and arranged so that when on impact prefabricated floor panels 22 - the butt joint is indicated by the dash-dotted line 24 - one in the area of the floor panel 22 (i.e. the Drawing level) results in fixed gearing. This happens that on the side of the platen 30-1 preferably symmetrical to a plane of symmetry ES, the is perpendicular to the butt joint 24, a Fit pair 90 is trained, which in the clear Distance W is to each other. On the other hand, this is Fit surface pair 90 on the side of the support plates 30-2 and 30-3 assigned a complementary pair of mating surfaces 92, which is a fit record for those between the Forming surface pair 90 lying pass flap 94 forms. The Extension of the fit between the pairs of fitting surfaces 90 and 92 across the butt joint 24 is designated LF.

Since the platen with the top layer 22 of the floor are firmly connected, leads from the Fit pairs 90, 92 formed toothing to that those adjacent to each other via the butt joint 24 Finished floor panels 22 laterally in the assembled state can no longer move. The 96 in FIG designated free corners thus remain in the case that the finished floor panels in the laying level be placed close to the butt joint 24 *. On the state of the art with conventional design of the support plates possibly forming wedge gap 98 - indicated with a broken line in Figure 3 - is effectively suppressed according to the invention, even if the Floor frequently assembled and disassembled and with great force with a force component perpendicular to the butt joint 24 * should be charged.

Figure 5 shows the design of the toothing in perspective view from below. You can see that Fitting surfaces 90 and 92, over which the pass tab 94 the non-displaceable toothing of the finished floor panels 22 manufactures.

A somewhat enlarged view is shown in FIG Scale the design of the pass tab 96 in detail explains:

The fitting surfaces 90 of the fitting tab 96 are like this arranged that they extend from the abutting edge 24 by the dimension M1 protrude, which is smaller than the dimension M2. Also on pages the fitting surfaces 92 in the area of the support plates 30-2 and 30-3 the arrangement is such that the dimension M2 is correspondingly larger than the dimension M1.

The mating surface pairs 90, 92 are preferably from milled surfaces, which e.g. thereby are made that a schematic with dashed Line indicated end mill 99 preferably by a Stencil or backdrop guided along tracks 97 is moved. A milling cutter is preferably used, the is supported on the template via a thrust ring.

It can be seen from FIG. 7 that the finished floor panels are all identical. According to 15 are examples of three prefabricated floor panels 22 arranged side by side, with the floor in its View from below is shown in the platen 30 are visible on which the cover layer 28 rests. In the edge area they are compared to FIG. 2 modified platen 30 with projections 36 over the Side edges 24, 24 * of the cover layer 28 over. Like the 7, each floor plate 22 two form springs 48, one of which is in the central region Longitudinal edge 24 * is arranged while the other form spring 48 is stored in the adjacent corner area. Warehousing the form springs 48 will be described below with reference to FIGS. 8 to 13 described. One recognizes from the illustration Figure 7 further that the pass tab 96 on the Butt edge 24 opposite edge 80 a complementary Forms fit pair 92. The complementary dimension is indicated by the dash-dotted lines 95.

As can be seen in detail from FIGS. 7 and 8, can be arranged in the middle section Form spring 48 over the adjacent longitudinal edge of the Pivot the finished floor molding 22 while the Form spring 48 arranged in the corner area over the shorter one Side edge, i.e. the brain stroke 80 is pivotable. In the area of this side edge there is also a Fastening bolt or clamping point 46 provided as Abutment for those in the middle of the left in Fig. 7 Floor finished plate 22 arranged form spring 48 is used. A corresponding clamping point 46 is still diametrical opposite corner of the finished floor panel 22 in Area of the lower longitudinal edge formed.

As shown, the form springs 48 and corresponding clamping points 46 in recesses 82, 84 of the Plates 30 added so that these connecting devices not down over the support surface of the support plates 30 protrude. To the maximum of this contact surface To design, these recesses were made to the swivel area the form springs 48 adapted.

In this way, the recess 82 receives a shaped spring 48 receiving platen 30 an approximately rectangular Base area (view of FIG. 15), which is different from the area the pivot axis 40 extends to the projection 36. The Base area of the recess 82 is chosen so that the Form spring 48 in the non-pivoted state completely in the Recess 82 is received and the peripheral edges then are arranged at a short distance from the shaped spring 48.

In the support 30 receiving the clamping point 46 an approximately triangular recess 84 formed, the Basic shape of an approximately right-angled triangle, whose Vertex surrounds the clamping point 46 at a distance, and their hypotenuse formed by a side edge of the platen 30 is. This triangular recess 84 allows that Swinging in and receiving the form spring 48, these in Locked state approximately parallel to a cathode triangular recess 84 extends.

As can be seen from FIG. 7, the recesses 84 form and 82 together a total recess that is approximately the entire Pivot range of the form spring 48 corresponds. The too the side edges of the platen 30 opening recesses 82, 84 also allow the use of a special assembly tool that used in the older application DE 195 08 682.1 is described.

Fig. 8 shows the detail "VIII" in Figure 7, wherein the shaped spring 48 pivoted into the locking position is. With dash-dotted lines, the clamping point 46 is the adjacent prefabricated floor slab in the area of corner 44 indicated. You can see the aligned counterpart of the Clamping point 46 with the pivot axis 40, resulting in a Tractive force alignment perpendicular to the butt joint results. It Suitable additional measures, such as. B. the provision Markings must be made to ensure exact alignment ensure the clamping point 46 with the pivot axis 38. In this alignment, it can initially be in one Recess 82, for example in the form of a free milling of the Platen 30 received form spring 48 in the direction of Arrow S are pivoted over the butt joint 24, see above that the shaped spring 48 with a U-shaped section 52, d. H. with the legs 54 and 56 in snap engagement can reach with the clamping point 46. During this Snap action, the tensile force of the shaped spring 48 is built up, that acts perpendicular to the butt joint 24.

The sectional view according to FIG. 9 shows that the clamping points and also the form spring designed so are that the entire connecting device has a height H which is slightly less than the depth T of the step 50 in the support plate 30.

The clamping points 46 are button-shaped Locking bolt 58 formed by means of countersunk fastening screws 60 mounted on the finished floor panel 22 are what is shown in detail in FIG. Identical with the locking bolt 58 is a fastening bolt 62 designed for the pivotable mounting of the form spring 48, what emerges from the representation according to FIG. 9.

Below are details of the design of the Form spring 48 and the locking bolt or the fastening bolt explained in more detail with reference to FIGS. 10 to 12:

10 has the shape of a multi-S-shaped bent rods, so that one there is a serpentine wavy spring. At one end the form spring 48 forms an eye 64A, the shape of which the outer contour of the fastening bolt 62 is adapted that the form spring 48 is held by the fastening bolt 62 can be pivoted against a predetermined frictional force.

After two S-turns, the actual mounting arch follows, d. H. the U-shaped section 52 of the Shaped spring 48, the arc of which in turn is in the outer contour the locking bolt 58 is adapted that in the assembled Condition the bend 52 to the outer contour of the locking bolt 58 hugs. The legs 54 and 56 of the Section 52 bent in a U-shape does not run parallel towards each other, but towards each other from the arch 52, so that an inlet gap SP for the locking bolt 58th arises, whose width W is slightly smaller than that when pivoting the form spring 48 onto the locking bolt 58 to, effective outer diameter of the locking bolt. In other words, when locking the connecting device the legs 54, 56 need to be slightly be expanded to behind the locking bolt too grab.

11 is the cross section with dashed lines the shaped spring legs 54, 56 indicated. You can see that the outer contour of the locking bolt 58 to the cross section the spring is adjusted so that one is as possible low surface pressure results. The same applies to the design of the fastening bolt in the area of the eye 64A.

To make it easier to lock the connector, is another at the other end of the form spring 48 Eye 64B formed. The eye 64B makes it easy to tackle the form spring 48. In addition, this eye for the Attack a suitable tool.

It can be seen from the illustrations that the fastening bolt 62 and the locking bolt 58 (both parts can be formed identically) is shaped so that it with a stepped section 74 (see FIG. 11) in Material of the finished floor panel 22 is sunk. The 9 shows that this stepped section 74 finds place in the platen 30, in which a suitable depression is then introduced.

Of course, deviations from the above are described Embodiment possible without the basic idea to leave the invention. So the cross section of the Form spring 48 but also the shape can be varied. It For example, a rectangular cross section can be used. The shape of the shaped spring can also be such that a Meandering shape arises. For the mutual overlap of the Floor slabs are not subject to a specific dimension. It has been shown that a supernatant in the range of 20 to 50 mm is sufficient. Also the size of the finished floor panels there are no special requirements. The rectangular shape with a side length of 2x1 m is a preferred measure represents.

Additional measures can be taken in the area of the clamping points be taken to the for the sunk reception of the Connection device required recess space the floor side of the finished floor panels again fill. Such measures exist, for example in making the stages 50 as small as possible.

13 is a detailed illustration of the detail "XIII" shown in Fig. 7, with the form spring 48 in its Lock position is brought by the form spring 48th is pivoted about the pivot axis 40 until it is U-shaped Section 52 engages with tensioning point 46 comes. For this purpose, the tool 66 is moved in the direction of the arrow X in FIG. 13 in the space delimited by the recesses 82, 84 to catch the eye 64B of the form spring.

As already mentioned above, the Form spring 48 approximately perpendicular in its locking position to a butt joint between two abutting prefabricated floor panels 22 so that the two corresponding End faces are pressed together.

For additional fixation of the narrow sides, i.e. to ensure the brain strokes 30 of the finished floor panels 22, can be a fitting 86 in the area of the brain strokes 80 be provided, as explained in more detail below 13, for example in the left one lower floor panel 22 (1) is attached and with a cone-shaped projection in the brain stroke 80 of the right immersed lower floor panel 22 (2) and thus a pre-fixation and securing the brain strokes 80 to each other allowed.

14 is a section along the line Z-Z in Fig. 13 shown, the two finished floor panels 22 (2), 22 (1) shown apart are. Accordingly, the fitting 86 is in the cover layer 28 of the finished floor panel 22 (2) embedded.

As can be seen in particular from FIGS. 14 and 15 this fitting 86 a pin plate 88, from the central portion thereof an L-shaped fastener extends, whose connecting leg 90 is approximately at right angles extends downwards from the center of the tenon plate and which merges into a mounting plate 92 that is parallel to the pin plate 88 in the opposite direction to the pin portion 94 extends. In the mounting plate 92 through holes are provided through which there are fastening screws can extend into the cover layer 28. The stroke 80 and the portion of the adjacent bottom 96 of the cover layer 28 are provided with recesses, so that the outside of the connecting leg 90th aligned with the brain stroke 80 and the outer surface of the mounting plate 92 runs flush with the bottom 96.

In the corresponding section of the brain stroke 80 the Another finished floor panel 22 (1) is a grooved Recess 98 formed, in which the pin portion 94th can immerse so that the two finished floor panels 22 (1), (2) in the vertical direction, i.e. in the direction of loading are fixed relative to each other.

16 is the recess 100 for receiving the fitting 86 in the finished floor panel 22 (2) in a bottom view shown. Accordingly, this recess has 100 a pocket 102 on the underside of the cover layer 28 is formed and the mounting plate 92 form-fitting picks up so that the outer surface of the fitting 86 aligned with the underside of the visible in FIG Cover layer 28 runs.

Plane-parallel and at a distance from pocket 102 is in the brain stroke 80 of the cover layer 28, a recess 104 is formed, 17 the left part of the pin plate 88 of the fitting in FIG 86 records. The width B of the recess 104 is slightly larger than the corresponding width of the peg plate chosen so that it easily in the top layer 28 is insertable. The fitting 86 is positioned via the mounting plate 92, which is positively from pocket 102 is received. As further shown in Fig. 19 can be removed, the end face of the area between the pocket 102 and the recess 104 opposite the stroke 80 downgraded so that the connecting leg 90 is received flush in the brain stroke 80. Because the fixation of the fitting on the pocket 102, the Recess 104 can also be formed as a continuous groove.

With the variant described above, implement a laying of the finished floor panels, at that in the area of the left brainstem 80 of each Floor finished plate 22 two of the fittings 86 provided are, the pin sections in the corresponding recesses immerse the adjacent plate. In each right brain stroke 80 of each floor panel 22 are then formed corresponding recesses 98 to the To be able to accommodate pin sections of the fittings 86.

In such an embodiment, each plate is at four points with shaped springs 86 and again at four Points connected with neighboring prefabricated panels via the fittings 86, so that this is easy and reliable in the predetermined relative position are stable.

In the remaining square corner areas of the Rectangular flooring elements 106 are arranged, the Dimensions each that of a half regular Floor panel 22 correspond.

With the finished floor panels 22 according to the invention it is very easy to form a floor, which due to its high quality construction meets all requirements on a sports floor is sufficient.

It is different from the described embodiment of course possible, the gearing according to the invention to train otherwise. So the mutual Overlap of the lower layer with the help special plate strips are made, which are then used for Training of the teeth are designed accordingly. Also, the shape of the finished floor panels is not one Rectangular in shape.

Another one follows from the illustration according to FIG Variant of the toothing that gives the additional effect mutual locking of the finished floor panels in the vertical direction. In this variant they are Fit surface pairs 90, 92 to the symmetry plane ES around inclined a predetermined angle theta so that a kind Dovetail connection between pass flap 94 and complementary recording arises.

The invention thus creates a finished floor panel to form a removable, preferably surface elastic flooring, with essentially rectangular Base area, consisting of two layers, of which the upper forms a continuous top layer and the lower layer preferably in the form of a field of Plates are available. The support plates are standing at least in areas laterally over the top layer, being in the lower layer, preferably sunk, in Area of a corner section and in the middle section the adjoining rectangular butt joint in Flat, longitudinally elastic form springs can be swiveled supported are receivable for clinging on abutting finished panel in snap engagement with one there Locking bolts fastened at a predetermined distance from the butt joint is feasible. To improve the Resilience of the floor while maintaining a simple Installation is perpendicular to the rectangular butt edge running abutting edges each have a device for Production of one in the surface of the finished floor slab non-displaceable toothing with the butt joint adjacent plate provided.

Claims (25)

Finished floor slab to form a removable, preferably surface-elastic floor, with an essentially rectangular base, consisting of two layers, of which the upper layer forms a continuous cover layer and the lower layer is preferably in the form of an array of support plates (30, 30 *), which protrude laterally beyond the cover layer at least in some areas, the pulling parts in the form of flat, longitudinally elastic shaped springs (48) being pivotably supported in the lower layer, preferably recessed, in the area of a corner section and in the middle section of the adjoining rectangular abutting edge (24 *) which can be snapped into place with a locking bolt (46, 58) fastened there at a predetermined distance from the butt joint (24), characterized in that on the side of the butt edges (perpendicular to the butt joint (24 *)) 24, 80) one facility each ung (90, 92, 96) is provided for producing a toothing which is displaceable in the surface of the finished floor panel with the adjoining panel laid in abutment. Finished floor panel according to Claim 1, characterized in that the device for producing the toothing is formed by the lower layer (30, 30 *). Prefabricated floor slab according to claim 2, characterized in that selected support plates (30-1, 30-2, 30-3) are shaped in the region of the abutting edges (24) perpendicular to the rectangular abutting edge (24 *) so that they form the Form the device for producing the gearing. Finished floor panel according to one of claims 1 to 3, characterized in that the device for producing the toothing is formed by a pair of fitting surfaces (90, 92) which are symmetrical to a plane (ES) which is perpendicular to the butt joint (24). are aligned. Finished floor panel according to claim 4, characterized in that the mating surfaces are formed by plane-parallel surfaces (90, 92) which are perpendicular to the plane of the butt joint (24). Prefabricated floor slab according to one of claims 3 to 5, characterized in that the support plates (30, 30 *) have a substantially square shape and are mounted on the cover layer (28) such that their edges are at an angle to the edges of the floor Finished panel run. Finished floor panel according to one of claims 4 to 6, characterized in that the fitting surfaces (90, 92) are formed by surfaces which can be produced by means of an end mill. Finished floor panel according to one of claims 1 to 8, characterized in that the longitudinally elastic shaped spring is bent several times in an S-shape. Finished floor panel according to one of claims 1 to 8, characterized in that the longitudinally elastic shaped spring is pivotally supported, preferably mounted, in a plane parallel to the plane of the flat element. Prefabricated floor slab according to one of Claims 1 to 9, characterized in that the shaped spring (48) forms an eye (64A) at one end which, in cooperation with a fastening bolt (62), forms the swivel joint. Finished floor panel according to claim 10, characterized in that the fastening bolt (62) and the locking bolt (58) are of identical design. Finished floor panel according to one of claims 1 to 11, characterized in that the shaped spring consists of spring steel, for example of the type C according to DIN 17223. Finished floor panel according to one of claims 1 to 12, characterized in that the shaped spring has a circular cross section. Finished floor panel according to one of claims 1 to 13, characterized in that the fastening bolt (62) has the shape of a rotationally symmetrical button, which is preferably partially recessed and is fastened to the underside of the flat element and has a radial outer surface with a quarter circle contour. Finished floor panel according to one of claims 1 to 14, characterized in that the fastening bolt (62) consists of plastic. Prefabricated floor panel according to one of claims 1 to 15, characterized by a fitting (86) which is fastened in the region of a butt edge (end face 80) (22) and which has a projecting pin section (94) which engages with a recess ( 98) of an abutting prefabricated floor panel (22) can be brought to fix the relative position of the two elements (22) to each other. Finished floor panel according to claim 16, characterized in that the fitting (86) has a peg plate (88) which is arranged plane-parallel to the cover layer (28) and which has a partial section in a recess (104) in the end face (80) of the cover layer (28 ) engages and which projects with a pin section (94) from the end edge (80), for which a corresponding recess (98) is provided on the opposite abutting edge (end face). Finished floor panel according to claim 16, characterized in that a connecting leg (90) extends from the central region of the peg plate (88) to the underside (96) of the cover layer (28), the outer surface of which forms part of the end edge (80) and which in a fastening plate (92) arranged parallel to the pin plate (88) merges, which extends back from the end edge (80) and the outside of which is flush with the underside (96) of the cover layer (28). Prefabricated floor slab according to claim 18, characterized in that in the cover layer (28) a groove (104) for receiving the partial section of the peg plate (88), a downgrading for flush reception of the connecting leg (90) and a pocket (104) for preferably positive reception of the mounting plate (92) are provided. Prefabricated floor slab according to one of Claims 16 to 19, characterized in that the covering layer (28) has a rectangular shape; A fitting (86) is arranged in each of the two corner areas of a brain stroke (80) of the cover layer (28), while a recess (98) for receiving a pin part (94) of an adjacent one is located on the opposite corner areas of the other brain stroke (80) Floor finished plate (22) is formed. Finished floor panel according to one of claims 16 to 20, characterized in that the width of the recess (104) in the brain joint (80) is greater than the width of a peg plate (88). Finished floor panel according to one of claims 1 to 21, characterized in that each form spring (48) and each fastening bolt (46) are received in edge recesses (82, 84) of support plates (30), the base surface of the edge recesses (82, 84 ) slightly covers the swivel range of the form spring (48) over the respective support plate (30). Finished floor panel according to claim 22, characterized in that the edge recess (82) assigned to the shaped spring (48) has an approximately rectangular base area and the edge recess (84) assigned to the fastening bolt (46) has an approximately triangular base surface, the fastening bolt (46) is arranged in the region of a right-angled apex of the triangle. Floor made of prefabricated floor panels according to one of claims 1 to 23 preferably identical shape and structure is put together. Floor according to claim 24, characterized in that the prefabricated floor panels are laid offset.

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