EP0077875A1 - Squash court with walls made of pressboard panels coated with plastics - Google Patents

Abstract

1. Squash court, consisting of one bottom plate and four walls, consisting of chip board plates with plastic covering distanced by supports, and of a space between the plates filled with sand, characterised in that the sand filling between the chip board plates (20, 22) is of fire dried quartz sand with a grain of 1 to 3 mm ; and that the prefabricated chip board plates (20,22) are layered with an undercoat of a low-solvent double component polyurethane system with flame resistant additives on the working side and a covering layer of a highly friction resistant resin lacquer system on a base of aqueous expoxy resin, applied at the place of construction.

Description

The invention relates to a squash court, consisting of a base plate and four walls, which consist of spaced-apart plastic-coated chipboard preferably formed by vertical struts made of I-profiles and a plate space which is essentially completely filled with a sand filling.

The squash ball game is also becoming increasingly popular in Europe. The playing field consists of a rectangular courtyard with a length of 9.75 m and a width of 6.40 m. The base of the field is a Swinging wooden floor, preferably made of beech straps. The height of the playing field is 4.57 m on one of the two shorter end walls and 2.13 m on the other end wall opposite. The upper boundary of the playing field is marked by a 5 cm wide stripe, preferably a red stripe. In a courtyard that can be set up in a hall, this strip is also the upper boundary of the side walls. Such a courtyard must be set up in a roofed room, the height of which allows free play from the floor to the ceiling of 6 m. For an open-air yard, walls with an all-round height of at least 6 m are required.

The squash ball game is played in pairs with a ball that partially converts the impulse given to it into impact work when it strikes or strikes, so it is not fully elastic. This ball is alternately struck by either player on any of the four courtyard walls and must have touched the larger front wall between two successive strikes by the two players.

So far, it has been largely customary to pour the walls of squash courts in reinforced concrete. This was also considered to be absolutely necessary since it was previously thought that essentially only concrete walls are suitable for bouncing the ball in the manner suitable for the squash game, the surface of concrete also being suitable for the ball to give appropriate twist for the game. Squash courts with concrete walls, however, have the disadvantage that they are in the making are complex, in particular require expensive formwork and, moreover, can no longer be moved without being destroyed. In addition, the walls of squash courts must be completely flat and vertical, and must also run parallel to one another at precise intervals. The required dimensional accuracy only allows tolerances of up to 2 mm for the dimensions given above. Such dimensional accuracy is very difficult to achieve with great effort and with concrete walls. After all, it is also technically difficult to make these walls seamless. In particular, it is difficult to avoid the imprints of joint tapes that close the formwork joints or to remove them later.

From GB-PS 14 29 635 a squash court is already known, consisting of a base plate and four walls, which consist of plates spaced apart by struts and a filling material located in the space between the plates, in which the walls consist of struts on one another Asbestos cement slabs are kept at a distance, in which the space between the slabs is filled with concrete up to a certain filling level. Such squash fields essentially also adhere to the disadvantages already mentioned above, which are generally associated with the use of concrete, the walls in particular also not having sufficiently good and defined rebound properties. A disadvantage of this squash court is, in particular, that the wall panels, made of asbestos element, are kept at a distance by relatively solid beam construction, which means that there is no optimal rebound Properties of the walls can be achieved, since the wall areas covered by the respective struts are elastically "dead" with regard to their rebound properties.

To solve the task of creating a dimensionally accurate, easy-to-build squash field with optimal rebound properties with relatively little effort, a squash field of the generic type is described in DE-OS 27 31 484, in which the I-profiles whose Flange outer sides are firmly connected to the inner sides of the chipboard, preferably glued, in particular made of aluminum and can also take the load of the roof structure.

The known squash field of the generic type has proven itself in principle, but it has been shown that with regard to the more precise adjustability of the rebound properties of the field walls and the exact adjustability and easy assembly thereof, overall with regard to the playing characteristics, such as reliable "disqualification" of "From balls" etc., still further improvements are desirable.

The invention is therefore based on the object of improving the generic squash field in such a way that overall optimized game properties are achieved and in particular the rigidity and mountability of the field walls is made more favorable.

According to the invention, this object is achieved in a squash court of the generic type in that that the sand filling arranged between the particle boards consists of fire-dried quartz sand with a grain size of 1-3 mm.

It has been found that fire-dried quartz sand of this grain gives particularly favorable rebound properties.

Furthermore, it can be provided that the prefabricated particle boards are coated with a first, factory-applied primer made of a low-solvent two-component polyurethane system with flame retardant additives and a top coating applied at the installation site from a highly abrasion-resistant paint resin system based on an aqueous epoxy resin. The invention also teaches that adjoining particle boards are glued together seamlessly horizontally and / or vertically.

Furthermore, it can be provided according to the invention that the adjoining particle boards are glued together before the top coating is applied. According to the invention it is further proposed that in addition to the vertical struts in the intermediate space with the chipboard hollow supports are arranged with a substantially rectangular cross section, each having a base plate with screw holes or the like. And at least one adjusting screw or the like it can also be provided that the hollow supports have a square cross-section, it being proposed in particular that the hollow supports consist of steel profiles.

Another embodiment of the invention provides that the base plate has four screw holes and two adjusting screws. Furthermore, it is proposed that at least two hollow supports are provided in at least each side wall, it being possible, in particular, for the hollow supports to be provided in the third points of each side wall.

The invention further provides that, as vertical wall closings, each side and rear walls connecting hollow support profiles are provided with a substantially square base cross-section, the at least two opposite side surfaces substantially symmetrical to the longitudinal axis of the outer longitudinal central grooves for receiving from above the walls arranged wall attachments or the like, and at least one corner, a corner heel for receiving a glass wall or the like. exhibit. The configuration is preferably such that the support profile has two substantially continuous side surfaces for the attachment of the respective panels. spaces vertically terminating U-profiles that run perpendicular to the two other side surfaces provided with the longitudinal grooves; that each of the two substantially continuous side surfaces with a corner heel for receiving a glass wall or the like. merges into one of the two side surfaces provided with a longitudinal groove; and that a recess for receiving a chipboard front edge is provided along the longitudinal edge facing away from the corner heel of each of the essentially continuous side surfaces. In particular, here too it should be provided that the two substantially continuous side surfaces of the support profiles merge with the respective corner heel into the same of the other two side surfaces.

A further developed embodiment of the invention provides that a curtain rail-like fastening device for a ball catching net is arranged in the longitudinal groove of the support profiles facing the side wall in the region of the support profiles lying above the playing field walls. It can also be provided that a weight is arranged in the inner cavity of the support profiles, which is connected to the upper edge of the ball trap net by means of a tensioning rope guided on a deflection roller arranged near the upper end of the respective support profile.

According to a further embodiment of the invention, the squash court is characterized in that the support profiles consist of aluminum. According to the invention, an embodiment is also proposed which is characterized by a profile for the horizontal wall closure, which forms a concave outline on the side surfaces facing the playing surface. It can in particular be provided that the profiled section is formed from resilient-elastic material and has an essentially U-shaped cross section, the two legs being insertable into the edge region of the respective plate interspace by bending together.

The invention further proposes that each of the legs of the Ausprofiles at the end is bent substantially at right angles and in the An close to the corner flange thus formed has a substantially right-angled corner recess for receiving one of the chipboard edge areas, in particular it can be provided that the profile on its web side an outer central longitudinal groove of substantially rectangular cross-section for receiving a wall attachment or the like. forms. A special embodiment further provides that the web of the U-profile merges into the wall of the central longitudinal groove to form two internal longitudinal grooves of substantially rectangular cross-section.

Finally, the invention proposes that the profile consists of sheet steel.

• Fig. 1 eine bei einem Squash-Spielfeld nach der Erfindung verwendete Hohlstütze mit Bodenplatte in der Draufsicht;
• Fig. 2 einen Schnitt entlang der Linie II-II von Fig. 1;
• Fig. 3 fünf aneinanderstoßende Wände zweier Squash-Spielfelder nach der Erfindung in der Draufsicht;
• Fig. 4 eine Seitenwand eines Squash-Spielfeldes in der Seitenansicht, teilweise geschnitten;
• Fig. 5 das Detail "A" von Fig. 4 im vertikalen Schnitt parallel zur Zeichenebene von Fig. 4, zugleich als Schnittdarstellung entsprechend.der Linie V-V von Fig.6, in Richtung der Pfeile gesehen;
• _Fig. 6 eine Schnittdarstellung entlang der Linie VI-VI von Fig. 5, in Richtung der Pfeile gesehen;
• Fig. 7 das Detail "B" von Fig. 4 im vertikalen Schnitt parallel zur Zeichenebene von Fig. 4, zugleich als Schnittdarstellung entsprechend der Linie VII-VII von Fig. 8, in Richtung der Pfeile gesehen;
• Fig. 8 das Detail "B" von Fig. 4 bzw. 7 in der Draufsicht;
• Fig. 9 das Detail "C" von Fig. 4 im Schnitt parallel zur Zeichenebene von Fig. 4; und
• Fig. 10 das in Fig. 9 wiedergegebene Ausprofil eines Squash-Spielfeldes nach der Erfindung im Schnitt senkrecht zur Längserstreckung des Ausprofiles, wie in Fig. 9.

Further features and advantages of the invention result from the following description, in which exemplary embodiments are explained in detail with reference to the drawing. It shows:

• Figure 1 is a hollow support with a base plate used in a squash court according to the invention in plan view.
• Fig. 2 is a section along the line II-II of Fig. 1;
• Figure 3 shows five abutting walls of two squash courts according to the invention in plan view.
• 4 shows a side wall of a squash court in a side view, partially in section;
• Fig. 5 shows the detail "A" of Fig. 4 in vertical section parallel to the plane of Fig. 4, at the same time as a sectional view corresponding to the line VV of Fig. 6, seen in the direction of the arrows;
• _F ig. 6 is a sectional view along the line VI-VI of FIG. 5, viewed in the direction of the arrows;
• 7 shows the detail "B" from FIG. 4 in a vertical section parallel to the plane of FIG. 4, at the same time as a sectional view along the line VII-VII from FIG. 8, seen in the direction of the arrows;
• Fig. 8 shows the detail "B" of Figures 4 and 7 in plan view.
• FIG. 9 shows the detail "C" from FIG. 4 in a section parallel to the drawing plane from FIG. 4; and
• 10 shows the profile of a squash field according to the invention shown in FIG. 9 in section perpendicular to the longitudinal extent of the profile, as in FIG. 9.

1 and 2 of the drawing, a hollow support 10 is shown, which is made of sheet steel and has a cross section of about 90 x 90 mm in the support area. The hollow support 10 has at its lower end a base plate 12 which is firmly connected to it, preferably welded to it, with dimensions of approx. 380 x 180 x 15 mm, which is provided with four screw holes 14, by means of which the base plate is doweled with the base can. Two threaded holes 16 are used to receive an adjusting screw 18 with a lock nut. Hollow supports of the type described in FIGS. 1 and 2 are preferably each arranged in the third points of the 9.75 m long side wall of a squash court, optionally also in the game wall at various spaced apart locations, and there firmly with the hollow supports 10 or I or U profiles at a distance from plastic-coated chipboard 20, 22 connected, preferably glued, which makes it possible to align and stiffen the wall in question both horizontally and vertically without the critical rebound properties of the wall would be affected in a negative way.

Fig. 3 shows two abutting squash playing fields with playing areas 24 and 26. On the front side of the two playing areas 24, 26 there is a play wall, generally designated 28, while between the two play areas 24, 26 there is a perpendicular to the play wall 28 extending side wall 30 is located. The playing surface 26 shown at the top in FIG. 3 is delimited on its side facing away from the playing wall 28 by an entrance wall 32, while a glass wall 34 is located at the corresponding point on the playing surface. The game walls 28, the side wall 30 and the input wall 32 are each constructed in the manner known in principle from DE-OS 27 31 484 from particle boards 20, 22, which are made of aluminum or steel by U-profiles 36 serving as vertical wall closures, further by vertical profiles, preferably I-profiles made of aluminum, not shown, arranged in the plate interspace 38 with spacing, kept at a distance. The particle boards 20, 22 in the squash field according to the invention consist of highly compressed material with a relatively large proportion of phenolic resin, the large-area particle boards forming the walls of the squash field consisting of are building. The pressboard 20, 22 are coated in the factory with a two-component polyurethane system with flame-retardant additives as a primer, which cause flame resistance. The coating system is a low-solvent coating system, the coating preferably being a double primer at the factory with the one under the trade name. Pefalon 115 primer FH available material is used. When the squash court is set up, abutting chipboards are then glued together seamlessly horizontally, but possibly also vertically, with the two-component material available under the trade name COMPAKTA PU adhesive VP 621-007 used, for example, directly on the glue points can be. Due to the weight of the upper, to be put on and to be inserted chipboard, the adhesive is strongly pressed together during the horizontal bonding, whereby the excess material is pressed out laterally. After drying for about 1 to 2 days, the excess material is repelled, whereupon the surface can be used with a synthetic resin spatula, for example a two-component spatula available under the trade name Metall-Spachtel SCHRAMM 616/83/7500 GFS 022. Following this, a top coating is carried out by a two component paint system on an aqueous basis with high abrasion resistant _L ackharzen on Epoxidharzgrundlage, also with flame retardant additives, preferably a commercially available under the trade name Pefalon-XL topcoat material may be used. This _e is ndbeschichtung both their color and in the degree of roughness, preferably by adding sand according to the teaching of DE-OS 27 31 484, precisely adapted to the needs of the squash game, the color preferably being a yellow-gray tinted white.

The space between the plates 38 is filled with annealed, i.e. fire-dried quartz sand with a grain size of 1-3 mm, the smaller the grain size, the smaller the grain, the smaller the momentum that returns the ball to the playing field after hitting one of the walls. In this way, a playing field can be set either "quickly" or "slowly", depending on the climatic conditions, etc. since the gas-filled squash ball is particularly fast in countries with a relatively hot climate, while on the other hand, systems set up in colder climates are proportionate must be set quickly, because of the lower rebound effect there on the gas-filled ball or its "softer" elasticity.

Fig. 3 also shows a serving as a vertical wall closure and for connecting adjoining walls, in the embodiment shown the side wall 30 and the input wall 32 and the glass wall 34, hollow support profile 40, which has a substantially square basic cross section in horizontal section. Two opposite side surfaces 42, 44 of the support profile 40 have substantially central longitudinal grooves 46, 48 which run essentially symmetrically to the longitudinal axis of the profile and which are intended for receiving wall attachments (e.g. as.) Arranged above the actual walls 28, 30, 32, 34 and to be described 50 shown in Fig. 9) serve. Furthermore, the two essentially flat side surfaces 52, 54 arranged perpendicular to the side surfaces 42, 44 of the support profile 40 are essentially continuous, so that here, as in the rest of the case, also in the manner shown in FIG. 3, on the side surfaces 44, 42 , vertical U-profiles 36 used to close the wall, in particular can be screwed on, but in the edge area of the side faces 52, 54 facing the side face 44, a corner shoulder 56, 58 is provided, which is used to hold a glass wall 34 or the like, but can also serve to receive the protruding longitudinal edge area of the u-profile 36 of chipboard 20, 22, as shown in Fig. 3 top right for the case of the corner heel 58 and the chipboard 20. On the longitudinal edge of the side surfaces 52, 54 facing away from the corner shoulders 56, 58, depressions 60, 62 are provided, which are also used to receive protruding edge regions of the pressboard 22 or 20 to be arranged there. The support profiles 40, which are preferably made of aluminum, are installed, for example, in the manner shown in FIG. 3 on the rear of the side walls 30, that is to say they are located in the transition region from the side wall 30 and rear wall 32 or 34. As a result of the shape described the support profiles 40 can be both glass panes 34 and normal field walls, for example 30 or 32, and also wall attachments 50 (FIG. 9). in their corresponding vertical longitudinal grooves 46, 38 or corner shoulders 56, 58 or recesses 60, 62 or connected to the corresponding U-profiles 36, in particular screwed.

Fig. 4 shows a side view of a side wall of the type already described 3 _0, the upper edge thereof (shown in Fig. 4 right) of the play panel 28 to the entrance wall 32 (in Fig. 4 left) in the manner customary for squash court manner obliquely runs down. A profiled section 64 is provided as the upper end of the side wall 30, the details of which are described in detail below with reference to FIG. 9. An identical profile 64 also runs along the upper edge of the game wall 26, the details "A", "B" and "C" of FIG. 4 being explained and described in more detail below.

5 and 6 show the detail "A" of FIG. 4. As can be seen from this, the support profile 40 has a curtain rail-like fastening device 66 on its side facing the side wall 30 of FIG. 4 in the middle = longitudinal groove 46, which 4 by means of hook elements 68, the side surface 44 in this exemplary embodiment being provided in a flange-like manner via the corner heels 58 and 56 in the manner readily apparent from the drawing, as a result of which the corner heels 56, 58 are converted into longitudinal grooves are.

With regard to the detail "B" of FIG. 4, it is apparent from FIGS. 7 and 8 that the ball catching net 70 of FIG. 4, which is arranged above the side wall 30, is constantly held under tension by means of a tensioning rope 72, which is held by a Deflection roller 74 runs, which is arranged near the upper end of the support profile 40 within the inner cavity thereof, a weight 76 hanging from the lower end of the tensioning cable 72. This creates space Saving, aesthetically pleasing way ensures a constant tightening of the ball net.

With regard to detail "C" from FIG. 4, FIG. 9 shows the cut-out profile 64 shown schematically there with the already mentioned wall attachment 50 in section. The details of the profiled section 64, which serves as a horizontal wall termination and which, essentially U-shaped, engages with its legs 78, 80 between the chipboard 20, 22 at its upper edge, are explained in detail below with reference to FIG. 10.

The profile 64 shown in FIG. 10, as already stated, has a substantially U-shaped basic cross section, is made of resilient steel sheet with a thickness of approximately 1.25 mm. The legs 80, 82 are essentially bent at right angles at the end. In connection with the corner flanges 82, 84 thus formed, a substantially rectangular corner recess 86, 88 is provided. A concave outline 90, 92 adjoins the corner recesses 86, 87 on both sides of the profile. On its web side, the profile 64 has an external, central longitudinal groove 94 into which the web of the U-profile merges with the formation of two internal longitudinal grooves 96, 98 with an essentially rectangular cross section.

The profiled section 64 is used in such a way that the legs 80, 82 are brought from the position shown in broken lines in FIG. 10 by bending together into the position shown in solid lines and in this way into the space between the plates Pressboard plates 20, 22 are introduced, so that the edge sections of the plates are then seated in the corner recesses 86, 88 in the manner shown in FIG. 9, the profiled section reliably remaining in the edge region of the space between the plates due to the resilient effect of the steel sheet used. The longitudinal groove 94 can be used for receiving a wall attachment 50 or the like, as can also be seen in FIG. 9. The concave lines 90, 92 ensure reliable jumping of the ball and thus immediate recognition of a ball that is no longer valid, the walls of the squash court being optimally stiffened by the introduction of the profile 64. The entire profile 64 is preferably dashed in red, so that the lines 90, 92 are clearly visible.

The features of the invention disclosed in the above description can be essential both individually and in any combination for realizing the inventive concept in its various embodiments.

Claims (22)

1. Squash field, consisting of a base plate and four walls, which consist of spaced by preferably formed from I-profiles vertical struts plastic-coated chipboard and a plate space which is essentially completely filled with a sand filling, characterized in that the between the pressboard (20, 22) arranged sand filling of fire-dried quartz sand with a grain size of 1-3 mm. 2. Squash court according to claim 1, characterized in that the prefabricated chipboard (20, 22) with a first, factory-applied primer made of a low-solvent two-component polyurethane system with flame-retardant additives and a top coating applied on site from a highly abrasion-resistant paint resin system on aqueous Epoxy resin base are coated. 3. Squash court according to claim 1 or 2, characterized in that adjoining chipboards (20, 22) are glued together seamlessly horizontally and / or vertically. 4. squash court according to claim 3 and 4, characterized in that the adjoining chipboard (20, 22) are glued together before applying the top coating. 5. Squash field according to one of the preceding claims, characterized in that in addition to the vertical struts in the plate space (38) with the chipboard (20, 22) firmly connected hollow supports (10) are arranged with a substantially rectangular cross section, each one Base plate (12) with screw holes (14) or the like. and at least one adjusting screw (18) or the like. 6. Squash field according to claim 5, characterized in that the hollow supports (10) have a square cross section. 7. squash field according to claim 5 or 6, characterized in that the hollow supports (10) consist of steel profiles. 8. squash court according to one of claims 5 to 7, characterized in that the base plate (12) has four screw holes (14) and two adjusting screws (18). 9. squash field according to one of claims 5 to 8, characterized in that at least two hollow supports (10) are provided in at least each side wall (30). 10. Squash field according to claim 9, characterized in that the hollow supports (10) are each provided in the third points of each side wall (30). 11. Squash field according to one of the preceding claims, characterized in that the vertical wall ends each side and rear walls (30th and 32, 34) connecting hollow support profiles (40) are provided with a substantially square basic cross section, which at least two mutually opposite side surfaces (42, 44) essentially symmetrical to the longitudinal axis of the outer central longitudinal grooves (48, 46) for receiving wall attachments (50) or the like arranged above the walls (28, 30, 32) and at least one corner shoulder (56, 58) for receiving a glass wall (34) or the like. exhibit. 12. Squash court according to claim 11, characterized in that the support profile (40) has two substantially continuous side surfaces (52, 54) for attaching the respective plate gaps (38) vertically closing U-profiles (36) which are perpendicular to the two other side surfaces (44, 42) provided with the longitudinal grooves (46, 48) run; that each of the two substantially continuous side surfaces (52, 54) with a corner shoulder (56, 58) for receiving a glass wall (34) o. d ^g l. merges into one of the two side surfaces provided with a longitudinal groove (46, 48); and that a recess (60, 62) is provided along the longitudinal edge of each of the substantially continuous side surfaces (52, 54) facing away from the corner shoulder (56, 58) for receiving a chipboard front edge. 13. Squash court according to claim 12, characterized in that the two substantially continuous side surfaces (52, 54) of the support profiles (40) with the respective corner heel (56, 58) in the same (44) of the other two side surfaces (44, 42) pass over. 14. Squash field according to one of claims 11 to 13, characterized in that in the side wall (30) facing longitudinal groove (46). Support profiles (40) in the area of the support profiles above the field walls (28, 30, 32) a curtain rail-like fastening device (66) for a ball trap net (70) is arranged. 15. Squash field according to one of claims 11 to 14, characterized in that in the inner cavity of the support profiles (40) a weight (76) is arranged, which is arranged on a near a top of the respective support profile (40) deflection roller ( 74) guided tensioning cable is connected to the upper edge of the ball trap net (70). 16. Squash field according to one of claims 1 to 15, characterized in that the support profiles (14) consist of aluminum. 17. Squash field according to one of the preceding claims, characterized by a profile (64) for horizontal wall closure, which forms a concave outline (90) on the side surfaces facing the playing surface. 18. Squash field according to claim 17, characterized in that the profiled section (64) is formed from resilient-elastic material and has a substantially U-shaped cross section, the two legs (78, 80) being bent together into the edge region of the respective plate space (38) can be inserted. 19. Squash field according to claim 18, characterized in that each of the legs (78, 80) of the profiled section (64) is bent at the end substantially inwards at right angles and in connection with the corner flange (82, 84) thus formed a has substantially right-angled corner recess (86, 88) for receiving one of the chipboard edge regions. 2 ₀ . Squash court according to claim 18 or 19, characterized in that the profiled section (64) forms on its web side an outer central longitudinal groove (94) of essentially rectangular cross section for receiving a wall attachment (50) or the like. 21. Squash field according to claim 20, characterized in that the web of the U-profile under Bil extension of two internal longitudinal grooves (96, 98) of substantially rectangular cross-section merges into the wall of the central longitudinal groove (94). 22. Squash field according to one of claims 17 to 21, characterized in that the profile consists of sheet steel.

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