Patent Publication Number: US-8973707-B2

Title: Toe board for scaffolding and a method for producing a toe board

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is the National Stage of PCT/DE2008/000097 filed on Jan. 21, 2008, which claims priority under 35 U.S.C. §119 of European Application No. 07001361.0 filed on Jan. 23, 2007. The international application under PCT article 21(2) was not published in English. 
     The invention relates to a toe board for scaffolding, for enclosing walk and/or work surfaces of scaffolding platforms or scaffolding floors on a lateral side of the walk and/or work surfaces, with an elongate board unit, which is formed by or from a hollow profile of steel, particularly of galvanised steel plate, which with the help of a respective closure means is closed at each of its ends facing away from one another in longitudinal direction. For producing a connection with the scaffolding and/or with an adjacent toe board, the toe board has a mounting unit protruding in longitudinal direction beyond its respective end and consisting of metal, preferably of steel, particularly of sheet steel. 
     Toe boards are provided at the edges of scaffolding floors so as to prevent persons from slipping off at the side and/or objects from dropping down. They comprise a board body which hitherto usually consisted of solid material and, in particular, of wood, synthetic material or aluminium. Fittings of steel or aluminium, preferably of sheet material, serving for production of a connection with the scaffolding and/or with an adjacent toe board are fastened to the longitudinal ends of the board body with the help of rivets or screws. Toe boards of that kind have become known from, for example, DE 1 960 069 U, DE 37 02 127 A1, DE 38 13 513 A1, DE 202 02 659 A1 and DE 295 06 672 U1. 
     A toe board of steel has become known from DE 295 01 982 U1, which consists of pressed steel panels with drawn-through holes or of rolled steel panels with drawn-in corrugations, which are cut at the ends thereof and closed by flat steel. Welded to the flat steel are U-shaped retaining brackets with the help of which the steel toe boards can be fixed to vertical upright tubes of a scaffolding. With steel toe boards of that kind it is possible to achieve, by comparison with toe boards of wood or of aluminium, a longer service life because they are in a position of also being able to securely withstand the loads occurring under rough conditions in practice, such as can arise particularly during transport and handling of the toe boards, especially when throwing, dropping and/or possible walking thereon in the course of assembly or disassembly. 
     As in the case of aluminium toe boards the fire load can be minimised with the use of toe boards of steel by comparison with toe boards of wood. However, steel toe boards can be produced very much more economically by comparison with aluminium toe boards, which are expensive with respect to material and production. Steel toe boards are usually galvanised for the purpose of surface protection. 
     However, the steel toe boards which have become known from the prior of the art are still comparatively costly in production and due to sharp burrs in the edge region the manual handling thereof is connected with a considerable risk of injury. 
     It is accordingly an object of the invention to provide a toe board for scaffolding with a board unit of steel and a method for production of a toe board, by which the foregoing disadvantages are avoided. 
     This object is fulfilled by a toe board with the features described herein and by a method for production of a toe board as described herein. 
     Due to the fact that the hollow profile of the board unit is closed at each of its ends by a respective end cap comprising a cover part which projects beyond the end of the hollow profile and covers the end edges thereof and which consists preferably substantially or preferably entirely of synthetic material or aluminium, the risk of injury during handling can be minimised. Since the end cap has a fastening body connected in single-part or multi-part manner with the cover part thereof, the cover part being inserted into the hollow profile of the board unit and being firmly connected therewith and/or with the mounting unit with the help of fastening means, it is possible to achieve a simple and economic assembly as well as secure connection with the board unit. Due to the fact that the mounting unit has a fastening part which is inserted into the hollow profile, preferably also into a recess, particularly into a slot, of the end cap and which is firmly connected with the hollow profile with the help of fastening means, a particularly advantageous assembly in conjunction with economic connecting techniques as well as a secure connection of the parts forming the toe board can also be achieved together with the effect of a further reduction in the risk of injury. 
     It can be of particular advantage if the fastening part or the mounting unit is inserted into the hollow profile to penetrate a recess, particularly a slot, of the end cap. The risk of injury during handling can thereby be even further reduced. 
     In a particularly advantageous development provision can be made for the wall parts, which bound the recess or the slot, of the end cap to enclose the fastening part of the mounting unit over the full circumference or substantially over the full circumference. As a result, not only can the risk of injury by sharp end edge regions be further reduced, but also advantageous possibilities of assembly and fixing of the mounting unit to the end cap itself arise. 
     In an advantageous development it can be provided that the fastening body also is composed preferably substantially or preferably entirely of synthetic material or aluminum and is preferably integrally connected with the cover part. This enables particularly economic production of the end cap. 
     If the cover part, preferably also the fastening body, is or are formed substantially or entirely from or by a thermoplastic synthetic material these components can be produced even more economically, particularly in an injection-moulding method. 
     Although the end cap and/or the fastening body can be preferably formed from a raw synthetic material already securely resistant to the demands and loads in practice, provision can also be made for the end cap and/or the fastening body to consist substantially or entirely of a synthetic material filled with fillers and/or reinforced by reinforcing materials, preferably by reinforcing fibers, especially by glass fibers. 
     In a preferred development it can be provided that the mounting unit and/or the end cap is or are mechanically positively connected, i.e. connected with shape-fit, with the hollow profile or with formation of a mechanically positive connection, i.e. a shape-fit connection. A particularly stable and secure connection of the components to be connected and consequently a toe board doing particular justice to the demands and loads in practice can thereby be made available. Alternatively or additionally it can also be provided for this purpose that the mounting unit and the end cap are mechanically positively connected together, i.e. connected with shape-fit, with shape-fit or connected together with formation of a mechanically positive connection, i.e. a shape-fit connection. 
     The afore-mentioned advantages can be further improved if the mounting unit and/or the end cap is or are fastened to the hollow profile of the board unit exclusively with the help of mechanical fastening means and free of welding. 
     An even more stable and secure connection of the components to be connected and consequently a toe board doing justice to a particular degree to the demands and loads in practice can be achieved if the mounting unit and/or the end cap is or are fastened to the hollow profile of the board unit by means of rivets, particularly by means of tubular rivets. A toe board with a particularly high load-bearing capability can thereby be made available. 
     The mounting unit and/or the end cap can be preferably fastened to the hollow profile of the board unit by means of at most or exactly two rivets, preferably by means of at most or exactly two tubular rivets. 
     Alternatively, it can be provided that the mounting unit and/or the end cap is or are fastened to the hollow profile of the board unit free of welding and free of separate mechanical fastening means, such as rivets or screws. As a result, separate joining materials or fastening elements can be eliminated, whereby a particularly economic mass production is made possible. 
     In a particularly advantageous embodiment provision can additionally be made for the mechanically positive connection to be achieved by a pressing process producing a local deformation of a wall part of the hollow profile. 
     According to a particularly preferred development it can be provided that the mechanically positive connection is effected by drawing in or pressing in a hole edge region of a hole provided in a wall part of the hollow profile, preferably with the help of a press die, into a recess, preferably into a passage hole, of the fastening part of the mounting unit and/or of the fastening body of the end cap. These measures enable a particularly economic production of the toe board with further improved stiffness as well as with a further reduced weight. 
     In a particularly preferred embodiment provision can be made for the fastening part of the mounting unit and/or of the fastening body of the end cap to have at least one recess, preferably a passage hole, extending transversely to a wall part of the hollow profile and open towards the wall part, the recess edge or hole edge being engaged behind by a hole edge—which is integrally connected or integrally formed with the wall part of the hollow profile and which projects inwardly, preferably is drawn in—of a hole of the hollow profile. 
     In a further advantageous embodiment it can be provided that the mounting unit and the end cap are mechanically positively connected together prior to insertion of the fastening part and the fastening body into the hollow profile of the board unit. Special assembly and production advantages can thereby be achieved. 
     In addition, provision can be made for the fastening body of the end cap to be formed with a resilient detent element which in the mounted state so detents in a recess, preferably in a passage opening, of the fastening part of the mounting unit with formation of a mechanically positive connection that the fastening part of the mounting unit mounted at the end cap is secured at least against withdrawal in a direction opposite to the direction of insertion of the fastening body of the end cap into the hollow profile. In this manner the mounting unit and the end cap can be pre-assembled in particularly simple mode and manner with formation of a unit which is simple and safe to handle. 
     In that case provision can be made for the fastening part of the mounting unit during its plugging onto or into the end cap to press the resilient detent element of the fastening body of the end cap inwardly against the spring forces of the detent element, wherein in the course of further plugging on or plugging in of the fastening part of the mounting unit the detent element of the fastening body of the end cap automatically detents in the recess of the fastening part of the mounting unit. 
     In addition, it can be provided that the end cap has an abutment against which the fastening part of the mounting unit can abut during plugging onto or into the end cap so that the mounting unit in the mounted state is disposed in a position relative to the end cap which is predetermined by the position of the abutment. 
     In that case, it can be provided in an advantageous embodiment that the abutment and the detent element of the end cap are arranged at a spacing from one another which is equal to or slightly larger than the spacing between the recess, which is associated with the detent element, of the fastening part of the mounting unit and an end edge, which is associated with the abutment, of the fastening part of the mounting unit. In this manner, after joining together or plugging together of the mounting unit and the end cap a unit results which can be handled simply and safely in the course of the of the further production process and which is permanently connected for the loads then encountered. 
     Moreover, provision can be made for the recess of the fastening part of the mounting unit to be formed as a slot extending in the insertion direction and for the detent element to have an outer contour corresponding with the inner contour of the slot. Precise positioning of the components, which are to be pre-assembled, is thereby further improved. 
     In addition, it can be provided that the fastening part of the mounting unit is formed with at least two fastening limbs arranged at a spacing from and preferably parallel to one another. The weight of the mounting unit can thereby be advantageously reduced. 
     In that case it can be provided that each fastening limb is formed with at least one recess serving for fastening thereof to the hollow profile and with at least one recess serving for fixing thereof relative to the end cap. This enables a particularly secure fixing of the end cap relative to the mounting unit on the one hand and a secure and stable connection of the mounting unit with the hollow profile of the board unit on the other hand. 
     Furthermore, provision can be made for the fastening body of the end cap to be formed with at least two insertion bodies arranged at a spacing from one another and preferably also parallel to one another, wherein the number of insertion bodies preferably corresponds with the number of fastening limbs. 
     In an advantageous embodiment it can be provided that the end cap is chamfered at an angle of preferably approximately 45 degrees at its end facing away from the hollow profile in longitudinal direction. Depending on the selected angle a further toe board can in this manner be mounted at the end directly adjoining a first toe board according to the invention. In addition, in this manner the board unit or the hollow profile can be cut to length particularly economically in a cutting plane perpendicular to the length direction thereof. 
     In addition, provision can be made for the part of the cover part covering the end edges of the hollow profile to be formed with an abutment which can be brought into contact with the end edges of the hollow profile or bears thereagainst. Through an abutment of that kind the precise insertion position of the end cap or of the fastening body thereof can be determined so that a uniform overall length of the toe board can always be guaranteed in the course of production thereof. 
     In addition, it can be provided that the end edges of the hollow profile span a plane arranged perpendicularly to the length direction or perpendicularly to the longitudinal axis of the hollow profile. As already mentioned beforehand, the hollow profile can be thus cut to length perpendicularly to its longitudinal axis, which means particular cost advantages in production. Thus, the connecting chamfers, which are optionally provided, of toe boards to be optionally arranged at an angle relative to one another can then be provided at the part of the end caps protruding out of the hollow profile, which in combination signifies special advantages in cost. 
     Moreover, provision can be made for the hollow profile to be formed with at least one, preferably with at least two, longitudinal beams which for preference are closed in cross-section. The bending, torsional and kink strengths can thereby be significantly increased. 
     In that case it is advantageous if the at least one longitudinal beam is constructed as an edge beam. Apart from the afore-mentioned advantages, in this manner the risk of injury during manual handling can be even further reduced. These advantages can be achieved to a particular degree if two longitudinal beams constructed as edge beams are provided. 
     In addition, provision can be made for the longitudinal beam to have a box-shaped and/or closed, particularly trapezium-shaped, cross-section in a section perpendicular to the longitudinal axis thereof. 
     Furthermore, provision can be made for the hollow profile to be produced by bending over and/or flanging a blank of steel plate, particularly in a profiling roll train. This makes possible a particularly economic production of the toe board. 
     A further improved connection and particularly economic production can be achieved if the two longitudinal ends of the hollow profile produced from steel plate are connected with one another in overlapping manner or in a butt joint free of separate mechanical fastening means, such as rivets or screws, and also free of welding methods requiring a separate joining material. 
     In that case it can be provided that the two longitudinal ends of the steel plate are connected together or with an oppositely disposed wall part of the hollow profile with the help of a press-joining method, for example by means of through-joining, clinching and/or roller cut stamping. 
     Alternatively or additionally provision can be made for the two longitudinal ends of the steel plate to be connected together or with an oppositely disposed wall part of the hollow profile by means of laser welding, preferably over the entire length of the steel plate. 
     It is possible to achieve a particularly economic mass production of the toe boards in a large batch number with use of the afore-mentioned joining methods. 
     In addition, it can be provided that the mounting unit has in the region projecting beyond the end of the hollow profile a slot extending substantially perpendicularly to the longitudinal axis thereof and open towards one of the narrow longitudinal end faces of the board unit extending in longitudinal direction. The slot base of the slot can preferably be arranged at approximately half the height of the board unit. 
     In addition, it can be provided that the board unit is provided on its wide longitudinal sides facing away from one another with longitudinal ribs which extend over or substantially over its entire length and are preferably formed as corrugations and which enable stacking of several toe boards one above the other with formation of a mechanically positive connection, which hinders or prevents displacement of the toe boards perpendicularly to the length direction thereof, of the toe boards stacked one on the other. Longitudinal ribs of that kind can thus serve as stack ribs. Moreover, the stiffness and also the capability of gripping the toe boards can be increased by longitudinal ribs of that kind. 
     In that case it can advantageously be provided that at least one first longitudinal rib of the longitudinal ribs extends upwardly of the outer boundary surface of a first wide longitudinal side of the wide longitudinal sides of the board unit and that at least one second longitudinal rib of the longitudinal ribs extends downwardly of the outer boundary surface of the second wide longitudinal side, which faces away from the first wide longitudinal side, of the board unit. Longitudinal ribs of that kind can be produced in particularly simple and economic mode and manner and enable a particularly simple and secure stacking of several toe boards with increased stiffness and capability of gripping of toe boards of that kind. 
     Moreover, provision can be made for the longitudinal ribs to be arranged in the region of at least one longitudinal beam, preferably in each instance in the region of an edge beam. 
     In addition, it can be provided that the longitudinal ribs have from the narrow longitudinal end face, which is associated therewith, of the board unit a spacing which enables gripping of the board unit by hand from one of its narrow longitudinal end faces in such a manner that at least one of the longitudinal ribs on a first wide longitudinal side of the wide longitudinal sides of the board unit can be gripped behind by at least one first finger of the hand or that at least one first finger of the hand can engage in at least one of the longitudinal ribs on a first wide longitudinal side of the wide longitudinal sides of the board unit, whilst at the same time another finger, preferably the thumb, of the same hand grips the second wide longitudinal side of the board unit facing away from the first wide longitudinal side. This spacing can advantageously be between 15 and 35 millimeters, preferably in the region between 20 and 30 millimeters, particularly approximately 24 millimeters. 
     In addition, it can be provided that the mounting unit formed from sheet steel is cranked, preferably at an angle, particularly of approximately 45 degrees or approximately 90 degrees, in its region, which projects beyond the end of the hollow profile, transversely to the longitudinal direction. It is thereby possible to minimize or completely avoid a gap, which is formed in the case of toe boards according to the prior art, between the longitudinal edge of a scaffolding covering and the boundary wall of the toe board, in that the outer boundary surface, which laterally encloses the walk and/or work surface of the scaffolding platforms, of the board unit of the toe board aligns with the longitudinal end edges of the scaffolding platforms or even projects in over the walk and/or work surface of the scaffolding platform or partly covers this. In the case of a cranking of approximately 90 degrees, in which thus a wall part or limb of the fixing part of the mounting unit is thus bent or flanged over approximately perpendicularly to the fastening part or the fastening limb thereof it is possible to achieve an advantageous securing of the toe board against longitudinal displacement. 
     In a preferred embodiment it can be provided that the mounting unit consists of a steel plate cranked by bending at least twice. A steel plate of that kind can be produced particularly simply and economically, has a low weight and can, nevertheless, advantageously satisfy the demands, which are imposed on a mounting unit of that kind, with respect to function and purpose of use. 
     The invention also relates to scaffolding comprising scaffolding floors or scaffolding platforms, which have walk and/or work surfaces, and vertical posts with first connector units for connection of longitudinal rails and/or transverse rails and/or diagonals with the help of second connecting units as well as at least one toe board as described herein. The object of the invention mentioned in the introduction can also thereby be advantageously fulfilled. 
     In a scaffolding of that kind it can advantageously be provided that the first connecting unit is constructed as a rosette, particularly as an apertured disc, which surrounds a vertical post and has recesses, and that the second connector unit is formed as a connecting head, which can be plugged onto the rosette and which has at least one wedge opening for insertion of a connecting wedge serving for tightening to the rosette. 
     Moreover, provision can be made for the connecting head, which has vertical outer boundary surfaces running together in wedge-like manner, to have an upper head part and a lower head part, between which a forwardly open slot for plugging of the connecting head onto the rosette is provided. 
     The invention also relates to a method for producing a toe board, which has, features as described herein, for scaffolding, for lateral enclosing of walk and/or work surfaces of scaffolding platforms, comprising an elongate board unit, which is formed by or from a hollow profile of steel, particularly of galvanised steel, which with the help of respective closure means is closed at each of its ends facing away from one another in longitudinal direction and which for producing a connection with the scaffolding and/or with an adjacent toe board is provided with a mounting unit protruding in longitudinal direction beyond its respective end and consisting of metal, preferably of steel, particularly of sheet steel, wherein the hollow profile of the board unit is closed at each end thereof by a respective end cap comprising a cover part which protrudes beyond the end of the hollow profile and covers the end edges thereof and which is composed preferably substantially or preferably entirely of plastics material, the cap having a fastening body which is connected in single-part or multi-part manner with the cover part and which is inserted into the hollow profile and firmly connected therewith and/or with the mounting unit with the help of fastening means, and that the mounting unit has a fastening part which is inserted into the hollow profile to penetrate, for preference, a recess, particularly a slot, of the cover part and which is firmly connected with the hollow profile of the board unit with the help of fastening means. 
     According to a first embodiment of this method it can be provided that the mounting unit and/or the end cap is or are connected with the hollow profile by a pressing process, which produces a local deformation of a wall part of the hollow profile, with formation of a mechanically positive connection. 
     In that case it can advantageously be provided that the mechanically positive connection is produced by drawing in or pressing in a hole edge of a hole, which is provided in a wall part of the hollow profile, with the help of a press die into a recess, preferably into a passage hole, of the fastening part of the mounting unit and/or of the fastening body. 
     Alternatively or additionally it can be provided that the mechanically positive connection of the mounting unit with the hollow profile and the mechanically positive connection of the end cap with the hollow profile are produced under the action, preferably simultaneously, of several press dies engaging the hollow profile on longitudinal sides thereof, which face away from one another, in opposite directions. 
     According to a second embodiment or according to a development of the method, which is described in the foregoing, for producing a toe board, particularly having features as described herein, or additionally, it can be provided that the mounting unit and/or the end cap is or are fastened to the hollow profile of the board unit exclusively by way of mechanical fastening means and free of welding. 
     According to a third embodiment or according to a development of the method, which is described in the foregoing, for producing a toe board, particularly having features described herein, it can be provided that the mounting unit and/or the end cap is or are fastened to the hollow profile of the board unit by means of rivets, preferably by means of tubular rivets. 
     In an advantageous embodiment of the method or of the method of producing a toe board, particularly having features described herein, the following assembly steps can be provided:
         initially the mounting unit and the end cap are firmly connected together, wherein the fastening body of the end cap and the fastening part of the mounting unit form an insertion unit;   subsequently the insertion unit is inserted into the hollow profile; and   subsequently thereto the fastening part of the mounting unit, preferably also the fastening body of the end cap, is or are firmly connected with the hollow body.       

    
    
     
       Further features, aspects and advantages of the invention can be inferred from the following description part, in which preferred exemplifying embodiments of the invention are described in more detail on the basis of the drawings, in which: 
         FIG. 1  shows a side view of a toe board with a view of one of the wide longitudinal sides thereof, with a mounting unit according to a first variant of embodiment; 
         FIG. 2  shows a side view of a toe board with a view of one of the wide longitudinal sides thereof, with a mounting unit according to a second variant of embodiment; 
         FIG. 3  shows a side view of the toe board according to  FIG. 1  with a view of the other wide longitudinal side thereof; 
         FIG. 4  shows a side view of the toe board according to  FIG. 2  with a view of the other wide longitudinal side thereof; 
         FIG. 5  shows a plan view of the toe board according to  FIG. 1  with a view of the narrow longitudinal side, which is shown on the right in  FIG. 1 , of the toe board, wherein the corresponding plan view of the toe board according to  FIG. 2  is identical; 
         FIG. 6  shows a three-dimensional view of an end cap with the viewing direction obliquely from the front onto the end face of the cover part thereof; 
         FIG. 7  shows a three-dimensional view of the end cap according to  FIG. 6  in a viewing direction obliquely from behind onto the fastening body thereof formed by two insertion bodies spaced apart in transverse direction; 
         FIG. 8  shows a rear view of the end cap according to  FIG. 6 ; 
         FIG. 9  shows a side view of the end cap according to  FIG. 6 ; 
         FIG. 10  shows a side view with a part section of the end cap according to  FIG. 7 ; 
         FIG. 11  shows a longitudinal section of the end cap along the section  11 - 11  in  FIG. 10 ; 
         FIG. 12  shows a plan view of a mounting unit according to the first variant of embodiment, which is shown in  FIGS. 1 and 3 , with a fastening part here arranged parallel to the plane of the sheet; 
         FIG. 13  shows a longitudinal section of the mounting unit according to  FIG. 12 ; 
         FIG. 14  shows a plan view of the mounting unit according to  FIG. 12 , with a transition wall part which has a circularly cylindrical hole for introduction of a hook and which is here arranged parallel to the plane of the sheet; 
         FIG. 15  shows a view, which corresponds with  FIG. 12 , of a mounting unit according to the second variant of the embodiment shown in  FIGS. 2 and 4 ; 
         FIG. 16  shows a longitudinal section, which corresponds with  FIG. 13 , of the mounting unit according to  FIG. 15 ; 
         FIG. 17  shows a plan view, which corresponds with  FIG. 14 , of the mounting unit according to  FIG. 15 ; 
         FIG. 18  shows a cross-section, which extends perpendicularly to the longitudinal axis of the board unit, of the hollow profile, with illustration of the fastening holes thereof in the state prior to assembly and mechanically positive fastening of the end cap; 
         FIG. 19  shows a plan view of a detail of the board unit according to  FIG. 18  with a view of the wide longitudinal side shown on the right in  FIG. 18 ; 
         FIG. 20  shows a side view of a detail of the board unit according to  FIG. 18  with a view of the narrow longitudinal side shown at the top in  FIG. 18 ; 
         FIG. 21  shows a side view of a detail of the board unit according to  FIG. 18  with a view of the wide longitudinal side shown on the right in  FIG. 18 ; 
         FIG. 22  shows a detail of a toe board according to the invention in the region of one of the ends of the hollow profile of the board unit, with an insertion unit, which is inserted therein and which comprises a fastening body of the end cap and a fastening part of the mounting unit, in a state prior to production of a mechanically positive connection by drawing in the hole edges of the fastening holes, which are provided in the hollow profile, with the help of the schematically illustrated press die; 
         FIG. 23  shows an illustration, which corresponds with  FIG. 22 , of the toe board, but now in finally joined state after drawing-in of the hole edges of the fastening holes of the hollow profile, in each instance inwardly and with formation of a mechanically positive connection by engagement behind of the hole edges of the fastening holes, which are provided in the fastening part of the mounting unit, as well as the hole edges of the fastening holes provided in the fastening body of the end cap; 
         FIG. 24  shows a cross-section of the toe board in a sectional plane shown perpendicularly to that in  FIG. 23  and along the section line  24 - 24 ; 
         FIG. 25  shows an enlarged detail in the region of one of the ends of the toe board shown in  FIG. 3 ; 
         FIG. 26  shows a three-dimensional illustration of a corner region of scaffolding with a mounted transverse toe board, which has a mounting unit according to the first variant of embodiment shown in  FIGS. 1 and 3 ; 
         FIG. 27  shows the corner region according to  FIG. 26  with an additionally used longitudinal toe board, the mounting unit of which is formed similarly in accordance with the variant of embodiment shown in  FIGS. 1 and 3 ; 
         FIG. 28  shows a plan view of a mounting unit according to a third variant of embodiment; 
         FIG. 29  shows a longitudinal section of the mounting unit according to  FIG. 28 ; 
         FIG. 30  shows a view, which corresponds with  FIG. 28 , of a mounting unit according to a fourth variant of embodiment; 
         FIG. 31  shows a longitudinal section, which corresponds with  FIG. 29 , of the mounting unit according to  FIG. 30 ; 
         FIG. 32  shows a cross-section, which corresponds with  FIG. 18 , of a board unit with a hollow profile according to an alternative embodiment, which has fastening holes intended for reception of rivets; 
         FIG. 33  shows a plan view of a detail of the board unit according to  FIG. 32  with a view of the wide longitudinal side shown on the left in  FIG. 32 ; 
         FIG. 34  shows a side view of a detail of the board unit according to  FIG. 32  with a view of the narrow longitudinal side shown at the top in  FIG. 32 ; 
         FIG. 35  shows a side view of a detail of the board unit according to  FIG. 32  with a view of the wide longitudinal side shown on the right in  FIG. 32 ; 
         FIG. 36  shows a cross-section, which extends parallel to the longitudinal axis of the hollow profile shown in  FIG. 32 , of the board unit, but now in finally assembled state, in which not only a fastening part of a mounting unit, but also a fastening body of an end cap are mechanically positively fastened to the hollow profile with the help of at least one rivet, here by means of two tubular rivets, of which one tubular rivet is illustrated in cross-section and in the joined state; 
         FIG. 37  shows a cross-section of the toe board in a sectional plane, which is perpendicular to that in  FIG. 36 , along the section line  37 - 37 ; 
         FIG. 38  shows a detail, which corresponds with the illustration in  FIG. 25 , of a toe board, with a hollow profile in the alternative embodiment shown in  FIGS. 32 to 37 , in which the fastening body of the end cap and the fastening limbs of the mounting unit, which is formed in accordance with the variant of embodiment shown in  FIGS. 28 and 29 , are fastened to the hollow profile by means of tubular rivets; 
         FIG. 39  shows a three-dimensional illustration of a corner region of a scaffolding with a mounted transverse toe board comprising a mounting unit which is formed in accordance with the variant of embodiment shown in  FIGS. 28 and 29  and which is fastened to the hollow profile by means of tubular rivets; and 
         FIG. 40  shows the corner region according to  FIG. 39  with an additionally used longitudinal toe board, the mounting unit of which is formed similarly in accordance with the variant of embodiment shown in  FIGS. 28 and 29  and which is similarly fastened to the hollow profile by means of tubular rivets. 
     
    
    
     The toe boards  30 ;  30 . 1 ;  30 . 1 . 1 ,  30 . 1 . 2 ;  30 . 2 ;  130 ;  130 . 1 . 1 ,  130 . 1 . 2  shown in the figures serve for lateral enclosing of walk and/or work surfaces  16  of scaffolding floors or scaffolding platforms  15  of a scaffolding  10  ( FIGS. 26 and 27  as well as  39  and  40 ). 
     Each toe board  30 ;  30 . 1 ;  30 . 1 . 1 ,  30 . 1 . 2 ;  30 . 2 ;  130 ;  130 . 1 . 1 ,  130 . 1 . 2  consists of an elongate board unit  31  which here is formed from a hollow profile  32 ;  132  of preferably galvanised steel plate  29 . The longitudinal views thereof are illustrated in, in particular,  FIGS. 1 to 5 ,  19  to  21  and  33  to  35  and the cross-sections thereof are shown in  FIGS. 18 and 24  as well as  32  and  37 . 
     The hollow profile  32 ;  132  is closed at each of its ends  34 . 1 ,  34 . 2 , which face away from one another in longitudinal direction  33 , with the help of respective closure means  35  formed as an end cap  37 ;  137 . Each board unit  31  has a mounting unit  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  which projects in longitudinal direction  33  beyond the respective end  34 . 1 ,  34 . 2  thereof and here consists of sheet steel  70  and which is intended for production of a connection with the scaffolding  10  and/or with an adjacent toe board  30 ,  130 . 
     Each end cap  37 ;  137  has a cover part  40 ;  140  which projects beyond the associated end  34 . 1 ,  34 . 2  of the hollow profile  32 ;  132  and covers the end edges  38 . 1 ,  38 . 2  thereof and which is composed substantially of plastics material. The end caps  37 ;  137  further comprise a fastening body  41 ;  141 , which here is connected as one part and integrally with the cover part  40 ;  140  and which is inserted into the hollow profile  32 ;  132  of the board unit  31  and here is fixedly connected not only with this, but also with the cover unit  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  with the help of fastening means  42 . In addition, the mounting unit  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  comprises a fastening part  39 ,  139  which is inserted into the hollow profile  32 ;  132  and which is firmly connected with the hollow profile  32 ;  132  of the board unit  31  with the help of a fastening means  43 . In the illustrated exemplifying embodiments the entire end cap  37 ;  137  consists of plastics material, so that not only the cover part  40 ;  140 , but also the fastening body  41 ;  141  consist of plastics material. The end cap  37 ;  137  preferably is composed of a thermoplastic plastics material, for example polypropylene, which can be optionally filled with or reinforced by filling and/or reinforcing materials, particularly reinforcing fibers such as glass fibers. 
     The form of the end caps  37 , according to a first exemplifying embodiment, in a state of still not yet mounted at the board unit  31  is evident from  FIGS. 6 to 11 . The cover part  40  of the end caps  37  has a recess  44  in the form of a slot  45  which here is closed at the full circumference and which in the mounted state extends perpendicularly to the length direction  33  or to the longitudinal axis  56  of the hollow profile  32 . In the finally mounted state of the toe board  30 ;  30 . 1 ;  30 . 1 . 1 ,  30 . 1 . 2 ;  30 . 2  the fastening part  39  of the mounting unit  36 ;  36 . 1 ,  36 . 2  is plugged through the slot  45  so that the fastening part  39  of the mounting unit  36 ;  36 . 1 ,  36 . 2  is then enclosed over the full circumference by the wall parts, which bound the slot  45  of the end cap  37 , of the cover part  40 . The fastening body  41 , which in the mounted state is inserted into the hollow profile  32  of the board unit  31 , of the end cap  37  is here formed with two insertion bodies  73 . 1 ,  73 . 2 , which are arranged parallel to one another to extend in longitudinal direction  33  at a spacing  74  from one another (see, for example,  FIGS. 9 and 10 ). Each insertion body  73 . 1 ,  73 . 2  is formed as a hollow profile, which is respectively provided with a plurality of cavities, which here are divided from one another by way of vertical wall parts ( FIGS. 7 and 8 ). The insertion bodies  73 . 1 ,  73 . 2  here each have an approximately trapezium-shaped cross-section ( FIG. 8 ). 
     The outer contour and arrangement of the insertion bodies  73 . 1  and  73 . 2  relative to the cover part  40  is selected in such a manner that an annular end edge  103 , which serves for covering or concealing the end edges  38 ;  38 . 1 ,  38 . 2  of the hollow profile  32  of the board unit  31  opposite thereto in the mounted state, remains free. This annular end edge  103  of the cover part  40  at the same time forms an abutment  77  against which the end edges  38 ;  38 . 1 ,  38 . 2  of the hollow profile  32  can bear in the mounted state (see, for example,  FIG. 23 ). 
     The horizontal wall parts of each insertion body  73 . 1 ,  73 . 2  are here each provided with four recesses formed as passage holes  54 . 1 ,  54 . 2 . These are here each arranged in groups of two recesses  54 . 1 ,  54 . 1  and  54 . 2 ,  54 . 2  parallel to the longitudinal direction  33 . In that case a further passage hole  54 . 2  is associated with each passage hole  54 . 1 , wherein the bore axes of these passage holes  54 . 1  and  54 . 2  respectively coincide. The passage holes  54 . 1  and  54 . 2  here each have the same internal diameter  100 , which is, for example, approximately 11 millimeters ( FIG. 22 ). 
     Each insertion body  73 . 1 ,  73 . 2  here has a rectangularly bounded receiving cavity  78 . 1 ,  78 . 2  which—starting from a wall part, which here extends perpendicularly to the longitudinal direction  33  and is constructed as an abutment  63 —extends in longitudinal direction  33  through the cover part  40  up to the slot  45 . These receiving cavities  78 . 1 ,  78 . 2  serve for mechanically positive reception of fastening limbs  71 . 1  and  71 . 2 , which are formed to fit, of the fastening part  39  of the mounting unit  36 ;  36 . 1 ,  36 . 2 , as are shown in, for example,  FIGS. 12 ,  14  and  15 ,  17 . 
     Projecting into each receiving cavity  78 . 1 ,  78 . 2  is a projection, which is formed to be wedge-shaped in cross-section, of a resilient detent element  60 , which is fixedly—here integrally—connected with the end cap  37  at a front fastening point, but which at its end facing away from this fastening point in direction from the end surface  75  of the end cap  37  is received in resiliently deformable manner in a recess surrounding this end. The function thereof in conjunction with the mounting unit  36 ;  36 . 1 ,  36 . 2  is explained in more detail in a following part of the text. 
     The end surface  75  of the end cap  37  is preferably formed to be chamfered at an angle  76 , which is preferably approximately 45 degrees. In this manner two toe boards  30 . 1 . 1  and  30 . 1 . 2  provided with end caps  37  of that kind can be quasi arranged ‘at a miter’ with uniformly small spacing from one another as, for example, illustrated in  FIG. 27 . 
     The cover part  40  of the end cap  37  has on its side, which is connected with the end  103  of the end cap  37  tapering to an acute angle, two partly conical projections  59  extending in longitudinal direction  33 . The outer contour of each projection  59 , at the height of the annular end edge  103  of the abutment  77  of the cover part  40 , corresponds with the outer contour of a longitudinal rib  88 . 1 ,  88 . 2 , which adjoins in the mounted state, of the hollow profile  32  of the board unit  31 . These longitudinal ribs  88 . 1 ,  88 . 2  are here formed as outwardly curved corrugations. On the side, which faces away from the partly conical projections  59 , of the end cap  37  this has at least in the region of each of its insertion bodies  73 . 1  and  73 . 2 , and here also in the region of its cover part  40 , a respective recess  69 . 1 ,  69 . 2  which is circularly or elliptically bounded in cross-section and which extends in longitudinal direction  33 . The inner contour of the recesses  69 . 2  in the insertion bodies  73 . 1 ,  73 . 2  corresponds with the inner contour of longitudinal ribs  88 . 3 ,  88 . 4  of the hollow profile  32  of the board unit  31 , which here is formed as inwardly curved corrugations ( FIG. 18 ). 
     The end caps  137  shown in  FIGS. 36 to 40  substantially correspond with the end caps  37 , but differ slightly in the form of their fastening bodies  141  and their cover parts  140 , as apparent particularly from  FIG. 37 . Whilst each fastening body  41  is subdivided by means of three longitudinal ribs into four cavities ( FIGS. 8 and 24 ), each fastening body  141  is subdivided by only a single longitudinal rib into two cavities ( FIG. 37 ). Moreover, the cover parts and the fastening bodies  141  of the end caps  137  have recesses for reception of corrugations  160  extending in longitudinal direction, according to alternative exemplifying embodiments of mounting units  136 ;  136 . 1 ,  136 . 2  shown in  FIGS. 28 to 31 . Moreover, the coverings  140  of the end caps  137  have in a centre region, at which the two insertion bodies  73 . 1  and  73 . 2  laterally adjoin, a T-shaped or I-shaped reinforcing profile as shown in  FIG. 37 . Apart from these differences, the end caps  137  are of the same design as the end caps  37 , so that to this extent reference can be made to the explanations with respect thereto at other places of the description. Accordingly, the same elements of the end caps  137  are provided with or denoted by the same reference numerals as for the end caps  37 . 
     Each mounting unit  36 ;  356 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  comprises a fixing part  101 ;  101 . 1 ,  101 . 2 ;  101 . 3 ,  101 . 4 , which in the mounted state protrudes out of the end cap  37 ;  137 , and a fastening part  39 ;  139  which in the mounted state is plugged through the slot  45  of the end cap  37 ;  137  into the hollow profile  32 ;  132  of the board unit  31 . The fastening part  39 ;  139  is here formed with two fastening limbs  71 . 1 ,  71 . 2 , which are arranged at a spacing  72  from and parallel to one another and which can be plugged through the slot  45  of the cover part  40 ;  140  of the end cap  37 ;  137  into the respective receiving cavity  78 . 1 ,  78 . 2  of the end cap  37 ;  137 . 
     Each fastening limb  71 . 1 ,  71 . 2  of the mounting units  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 2 ,  136 . 2  has at least one recess  52 . 1 ,  52 . 2 , which serves for fastening thereof to the hollow profile  32 ;  132  of the board unit  31  and which here is formed as a respective passage hole. In addition, it can be provided that each fastening limb  71 . 1 ,  71 . 2  is formed with at least one recess  61  which serves for fixing thereof relative to the end cap  37 ;  137  and which in the exemplifying embodiment is similarly formed as a passage opening and, in particular, preferably as a slot. The inner contour  67  of the recess  61  approximately corresponds with the outer contour  68  of the associated detent element  60  of the end cap  37 ;  137 , so that the respective detent element  60  can in the course of insertion of the respective mounting unit  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  in the end cap  37 ;  137  resiliently detent in the respective recess  61  of the mounting units  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2 . 
     The recesses  52 . 1  and  52 . 2 , which are formed as passage holes, of the fastening limbs  71 . 1 ,  71 . 2  of the mounting units  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  have a diameter  92  which here corresponds with the diameter  100  of the recesses  54 . 1  and  54 . 2 , which are similarly formed as passage holes, of the insertion bodies  73 . 1 ,  73 . 2  of the fastening body  41 ;  141  of the end cap  37 ;  137 . In the illustrated exemplifying embodiments the diameter  99  of the recesses  52 . 1 ,  52 . 2  serving for fastening of the mounting units  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  to the hollow profile  32 ;  132  is approximately 11 millimeters and the diameter  100  of the recesses  54 . 1 ,  54 . 2  serving for fastening of the end cap  37 ;  137  to the hollow profile  32 ;  132  and to the mounting unit  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  is similarly approximately 11 millimeters ( FIG. 22 ). 
     In the exemplifying embodiment shown in the figures the respective mounting unit  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  has in the region (fixing part  101 ;  101 . 1 ,  101 . 2 ;  101 . 3 ,  101 . 4 ) projecting beyond the end cap  37 ;  137  a slot  84 , which extends substantially perpendicularly to the longitudinal direction  33  of the fastening limbs  71 . 1 ,  71 . 2  and in the mounted state substantially perpendicularly to the longitudinal axis  56  of the hollow profile  32 ;  132  of the board unit  31  and is open towards one of the narrow longitudinal end faces  87 . 2  of the board unit extending in longitudinal direction  33  and the slot base  85  of which is preferably arranged approximately at half the height of the board unit  31 . In this manner two toe boards  30 . 1 . 1  and  30 . 1 . 2  or  130 . 1 . 1  and  130 . 1 . 2  can be advantageously arranged, for example as shown in  FIGS. 27 and 40 , and also fixed or fastened to one another in that a first mounting unit  36 ;  136 , for example the mounting unit  36 . 1 ;  136 . 1  of the toe board  30 . 1 . 1 ;  130 . 1 . 1 , is plugged on in the slot  84  of a mounting unit  36 ;  136  of a second toe board  30 , for example of a mounting unit  36 . 1 ;  136 . 2  of a second toe board  30 . 1 . 2 ;  130 . 1 . 2 . As shown in  FIGS. 27 and 40 , the slot  84  of the mounting unit  36 . 1 ;  136 . 1  of the first-mentioned toe board  30 . 1 . 1 ;  130 . 1 . 1  can, in the plugged-on state, be plugged onto the mounting unit  36 . 1 ;  136 . 1  of the second toe board  30 . 1 . 2 ;  130 . 1 . 2 . In the state of being plugged onto one another the two narrow longitudinal end faces  87 . 1  or longitudinal edges of the two toe boards  30 . 1 . 1  or  130 . 1 . 1  and  30 . 1 . 2  or  130 . 1 . 2  then consequently lie by the upper edges thereof at the same height level. 
     The mounting units  36 ;  36 . 1 ,  36 . 2 ;  136 ,  136 . 1 ,  136 . 2  preferably consist of sheet steel  70 . Its respective fixing part  101 ;  101 . 1 ,  101 . 2 ;  101 . 3 ,  101 . 4  can be formed with a continuous hole  102  into which a suspension hook, which is not shown in the figures, is introducible. It will be obvious that, in particular, the form of the fixing part, which projects out of the end cap  37 ;  137 , of the mounting unit can also be designed differently from that shown in the figures depending on user and use requirements. For example, the fixing part can also be formed to be the same as or similar to that described and shown in, for example, DE 100 61 506 A1, the disclosure content of which is here included to full extent. The mounting units  36 ;  136 , which preferably consist of sheet steel  70 , are cranked transversely to the longitudinal direction  33  in their region projecting beyond the end  34 . 1 ,  34 . 2  of the hollow profile  32 ;  132 , particularly in their region projecting beyond the respective end cap  37 ;  137 . The mounting units  36 ;  136  preferably consist of a steel plate  70  bent over at least twice (cf. in particular,  FIGS. 13 and 16  as well as  29  and  31 ). 
     The significant difference between the mounting unit  36 . 1  or  136 . 1  shown in, in particular,  FIGS. 12 to 14  or  28  and  29  and the mounting unit  36 . 2  shown in, in particular,  FIGS. 15 to 17  or the mounting unit  136 . 2  shown in, in particular  FIGS. 30 and 31  consists in that the fixing part  101 . 2  or  101 . 4  of the mounting unit  36 . 2  or  136 . 2  has a protrusion unit  57  or  157  which in the mounted state of the mounting unit  36 . 2  or  136 . 2  at the board unit  31  projects out by a spacing or a protrusion  58  beyond one of the narrow longitudinal end faces  87 . 1  ( FIGS. 2 and 4 ). With respect to the construction of that kind and the advantages thereof reference can be made at this point to, for the sake of simplicity, DE 202 02 659 U1, the disclosure content of which is included at this point to the full extent. 
     The variants of embodiment shown in, in particular,  FIGS. 28 to 31  of a mounting unit  136 ;  136 . 1 ,  136 . 2  differ from the variants of embodiment, which are shown in, in particular,  FIGS. 12 to 17 , of a mounting unit  36 ;  36 . 1 ,  36 . 2  substantially by the design of the fixing parts  101 . 3 ,  101 . 4  thereof. By contrast to the fixing parts  101 . 1 ,  101 . 2  the fixing parts  101 . 3 ,  101 . 4  are bent over twice at comparatively tight radii, preferably of 1 to 4 millimeters, particularly of approximately 2.5 millimeters, with formation of limbs  163 . 1  and  164 . 1  or  163 . 2  and  164 . 2  formed at approximately right angles to one another, wherein the respective limb  163 . 1  or  163 . 2  is also arranged or bent over approximately perpendicularly to the respective fastening part  139  or the respective fastening limbs  71 ;  71 . 1 ,  71 . 2  thereof. The respective transversely extending limb  163 . 1 ,  163 . 2  extends, going out from the respective fastening part  139  or from the respective fastening limbs  71 ;  71 . 1 ,  71 . 2  thereof, away in a first direction. Whereas the fixing parts  101 . 1  or  101 . 2  are cranked at an angle of approximately 45 degrees, the fixing parts  101 . 3  and  101 . 4  are cranked at an angle of approximately 90 degrees. By virtue of the latter measure it is possible to achieve an enhanced security against longitudinal displacement of a toe board  130  or of several toe boards  130 - 130  and, in particular, not only in the case of arrangement in a line or in longitudinal direction one behind the other, but also in the case of a corner arrangement in each instance of two toe boards  130 - 130  as illustrated in, for example,  FIG. 40 . 
     In addition, the mounting units  136 ;  136 . 1 ,  136 . 2  are each provided at the height of the two fastening limbs  71 . 1  and  71 . 2  thereof with two respective stiffening corrugations  160 ;  160 . 1 ,  160 . 2 . The corrugations  160 ;  160 . 1 ,  160 . 2  are here respectively arranged parallel to one another and approximately perpendicularly to the slot  84 . In each instance two of the corrugations  160  are associated with one of the fastening limbs  71 . 1 ,  71 . 2 . In that case, here the two corrugations  160 . 1  are associated with the fastening limb  71 . 1  and the two corrugations  160 . 2  are associated with the fastening limb  71 . 2 . The corrugations  160 ;  160 . 1 ,  160 . 2  are constructed and mounted in such a manner that they extend away from the fastening part  139  or from the fastening limbs  71 ;  71 . 1 ,  71 . 2  thereof in a second direction opposite to the first direction of extension of the limbs  163 . 1 ,  163 . 2 . The respective two corrugations  160 . 1  associated with the respective fastening limb  71 . 1  extend, going out from the respective fixing parts  101 . 2 ,  101 . 4 , continuously up to the respective fastening limb  71 . 1 . By contrast thereto the respective two corrugations  160 . 2  associated with the respective fastening limb  71 . 2  are interrupted by the respective slot  84 , wherein a first part of the respective corrugation  160 . 2  extends in the fixing part  101 . 3 ,  101 . 4 , whilst a second part of the respective corrugations  160 . 2  extends from the respective fixing part  101 . 3 ,  101 . 4  up to the respective fastening limb  71 . 2 . In the exemplifying embodiments shown in the figures all corrugations  160 ;  160 . 1 ,  160 . 2  project, in the finally mounted state, not only into the end cap  137 , but also out beyond the cover part  140  thereof (see  FIGS. 37 ,  39  and  40 ). The corrugations  160 ;  160 . 1 ,  160 . 2  able to be selectably provided serve for enhanced stiffening of the respective mounting unit  136 . 
     Again, by contrast to the variants of embodiment, which are shown in, in particular,  FIGS. 12 to 17 , of the mounting units  36 ;  36 . 1 ,  36 . 2  in the case of the mounting units  136 ;  136 . 1 ,  136 . 2  the respective hole  102  is disposed in that part of the mounting unit  136 ;  136 . 1 ,  136 . 2  arranged between the limb  163 . 1 ,  163 . 2  and the fastening limbs  71 ;  71 . 1 ,  71 . 2 . In the illustrated exemplifying embodiments the respective hole  102  is disposed in the region of the front end of the respective corrugation  160 . 1  arranged at the outermost corrugation  160 . 1  of the respective two corrugations  160 . 1  associated with the fastening limb  71 . 1 . 
     A first exemplifying embodiment of a hollow profile  32 , which here consists of galvanised steel plate  29  and to which the fastening body  41  of the end cap  37  and the fastening part  39  of the mounting unit  36 ;  36 . 1 ,  36 . 2  are fastened with the help of shaped wall parts  47 . 1 ,  47 . 2  of the hollow profile  32 , is shown in, in particular,  FIGS. 1 to 4  and  18  to  27 . 
     The form of the hollow profile  32  in a state prior to mounting and fastening of the end cap  37  and the mounting unit  36  to the hollow profile  32  is evident from  FIGS. 18 to 22 . The hollow profile  32  is produced from a blank of steel plate  29  by bending and/or flanging the same, especially in or on a roller profiling train. In that case, the two longitudinal ends  83 . 1  and  83 . 2  of the blank of steel plate  29  are advantageously connected together free of separate mechanical fastening means, such as rivets or screws, and also fee of welding methods requiring a separate joining material, here in a butt joint  93 , and, in particular, with the help of either a press-joining method, such as, for example, through-joining, clinching and/or roller cutting and stamping, or with the help of a laser welding method. In that case the two longitudinal ends  83 . 1  and  83 . 2  of the steel plate blank are preferably connected together and/or with an opposite wall part  47 . 1  of the hollow profile  32  over the entire or substantially over the entire length of the hollow profile  32 . The wall thickness of the hollow profile  32  is preferably less than 2 millimeters, particularly less than 1 millimeter, for example 0.8 millimeters or only 0.6 millimeters. 
     The hollow profile  32  of the board unit  31  has in the region of each of its ends  34 . 1 ,  34 . 2  a number, here eight, of passage holes  49  which corresponds with the number of recesses or passage holes  54 . 1 ,  54 . 2  in the fastening body  41  of the end cap  37 . These passage holes  49  in the hollow profile  32  have, in a state in which the end cap  37  and the mounting unit  36 ;  36 . 1 ,  36 . 2  are still not yet inserted into the hollow profile  32  and mechanically positively connected therewith, a diameter  50  which is very much smaller than the diameter  99  of the recesses  52 . 1 ,  52 . 2 , which are formed as passage openings, in the fastening limbs  71 . 1 ,  71 . 2  of the fastening part  59  of the mounting unit  36 ;  36 . 1 ,  36 . 2  and accordingly also very much smaller than the diameter  100  of the recesses  54 . 1 ,  54 . 2 , which are similarly formed as passage openings, of the insertion bodies  73 . 1 ,  73 . 2  of the end cap  37 . The diameter  50  of the passage holes  49  is, in the exemplifying embodiment, approximate 4.5 to 5 millimeters. 
     The end edges  38 . 1  and  38 . 2  of the hollow profile  32  span a plane arranged perpendicularly to the length direction  33  or perpendicularly to the longitudinal axis  56  of the hollow profile  32 . The hollow profile  32  is formed in the illustrated exemplifying embodiment with two cross-sectionally closed longitudinal beams  80 . 1  and  80 . 2 , which are both constructed as edge beams  81 . 1  and  81 . 2  and extend over the entire length of the board unit  31 . The longitudinal beams  80 . 1  and  80 . 2  have a box shaped, here trapezium-shaped, cross-section  82 . 1 ,  82 . 2  in a section perpendicular to the longitudinal axis thereof or perpendicularly to the longitudinal axis of the board unit  31 . In that case the wall parts, which are arranged oppositely at a spacing and which go out from a double wall region  91  having a width  94 , of the longitudinal beams  80 . 1  and  80 . 2  are respectively arranged at an angle  92  relative to a normal to a wall part  47 . 1  of a first wide longitudinal side  86 . 1  of the board unit  31  ( FIG. 18 ). 
     Each of the longitudinal beams  80 . 1 ,  80 . 2  designed as edge beams  81 . 1 ,  81 . 2  has on sides, which face away from one another and form a wall part of the wide longitudinal sides  86 . 1 ,  86 . 2  of the board unit  31  facing away from one another, longitudinal ribs  88 . 1 ,  88 . 2 ;  88 . 3 ,  88 . 4  extending over its entire or substantially its entire length and formed as corrugations. The longitudinal ribs  88 . 1  and  88 . 2  arranged on the first wide longitudinal side  86 . 1  respectively extend upwardly of the outer boundary surfaces  89 . 1  of the first wide longitudinal side  86 . 1  of the board unit  31  and the second longitudinal ribs  88 . 3 ,  88 . 4  arranged on the second wide longitudinal side  86 . 2  extend downwardly of the outer boundary surface  89 . 2  of the second wide longitudinal side  86 . 2 , which faces away from the first wide longitudinal side  86 . 1 , of the board unit  31 . These second longitudinal ribs  88 . 3  and  88 . 4  thus each extend in the cavities of the respective longitudinal beam  80 . 1 ,  80 . 2 . The longitudinal ribs  88 . 1  and  88 . 3  of the longitudinal beam  80 . 1  each have from the first narrow longitudinal end face  87 . 1  of the board unit  31  a spacing  90 . 1  or  90 . 2  which here is of the same size. In addition, the longitudinal ribs  88 . 2  and  88 . 4  of the longitudinal beam  80 . 2  have from the other narrow longitudinal end face  87 . 2  of the board unit  31  a spacing  90 . 1  or  90 . 2  which here is similarly of the same size. Moreover, here not only the two spacings  90 . 1 ,  90 . 1 , but also the two spacings  90 . 2 ,  90 . 2  are respectively of the same size. These spacings  90 . 1 ,  90 . 2  are between 15 and 35 millimeters, preferably between 20 and 30 millimeters and, in the exemplifying embodiment, approximately 24 millimeters. These spacings  90 . 1 ,  90 . 2  of the longitudinal ribs  88 . 1 ,  88 . 2 ;  88 . 3 ,  88 . 4  from the narrow longitudinal end face  87 . 1 ,  87 . 2 , which is respectively associated therewith, of the board unit  31  are selected in such a manner that they enable gripping of the board unit  31  by hand from one of its narrow longitudinal end faces  87 . 1 ,  87 . 2  in such a manner that at least one of the longitudinal ribs  88 . 1 ,  88 . 2  on a first wide longitudinal side  86 . 1  of the wide longitudinal sides  86 . 1 ,  86 . 2  of the board unit  31  can be gripped behind by at least one first finger of the hand or that at least one first finger of the hand can engage in at least one of the longitudinal ribs  88 . 3 ,  88 . 4  on a first wide longitudinal side  86 . 2  of the wide longitudinal sides  86 . 1 ,  86 . 2  of the board unit  31 , whilst at the same time another finger, preferably the thumb, of the same hand can grip the second wide longitudinal side  86 . 2  or  86 . 1 , which faces away from the first wide longitudinal side  86 . 1  or  86 . 2 , of the board unit  31 . 
     Apart from the fact the said longitudinal ribs  88 . 1 ,  88 . 2 ;  88 . 3 ,  88 . 4  can serve for favourable gripping and handling of the toe board  30 ;  30 . 1 ;  30 . 1 . 1 ,  30 . 1 . 2 ;  30 . 2 , these longitudinal ribs  88 . 1 ,  88 . 2 ;  88 . 3 ,  88 . 4  can advantageously serve as stiffening and/or stacking ribs. The longitudinal ribs  88 . 1 ,  88 . 2 ;  88 . 3 ,  88 . 4  are constructed and arranged in such a manner that they enable stacking of several toe boards  30 ,  30  one above the other with formation of a mechanically positive connection, which hinders or prevents displacement of the toe boards  30 ,  30  perpendicularly to the respective length direction  33  thereof, of the toe boards  30 ,  30  stacked one on the other. 
     The mounting and fastening of the mounting units  36 ;  36 . 1 ,  36 . 2  and the end caps  37  on and to the hollow profile  32  of the board unit  31  with formation of a toe board  30  according to the invention is described in the following: 
     In a first step the mounting units  36 ;  36 . 1 ,  36 . 2  are each connected with a respective end cap  37 , wherein the fastening body  41  of the end cap  37  and the fastening part  39  of the mounting unit  36 ;  36 . 1 ,  36 . 2  each form a respective insertion unit  97 . Thus, initially the respective mounting unit  36 ;  36 . 1 ,  36 . 2  is inserted with its fastening limbs  71 . 1  and  71 . 2  foremost in insertion direction  62  ( FIGS. 12 and 15 ) through the slot  45  of the cover part  40  of the end cap  37  into the respectively associated receiving cavity  78 . 1  or  78 . 2  of the end cap  37 . In that case the free insertion ends of the fastening limbs  71 . 1  and  71 . 2  run on the part of the respective detent element  60  extending into the respective receiving cavity  78 . 1 ,  78 . 2  and in the course of continuing insertion of the mounting unit  36 ;  36 . 1 ,  36 . 2  into the end cap  37  the resilient detent elements  60  are pressed inwardly against the spring forces thereof. In the course of further plugging-on or plugging-in of the fastening part  39  of the mounting unit  36  in insertion direction  62  into the end cap  37  the respective detent element  60  ultimately automatically detents in the respective recess  61  of the fastening limbs  71 . 1 ,  71 . 2  of the fastening part  39  of the mounting unit  36 . The plugging or insertion of the fastening part  39  of the mounting unit  36  onto or into the end cap  37  is limited by an abutment  63  ( FIGS. 10 and 11 ), at which the fastening part  39  of the mounting unit  36  can abut during plugging onto or into the end cap  37  so that the mounting unit  36  in the mounted state is disposed in a position relative to the end cap  37  preferably predetermined by the position of the abutment  36 . The abutment  63  and the detent element  60  of the end cap  37  are arranged at a spacing  64  which is the same size as or slightly larger than the spacing  65  between the recess  61 , which is associated with the detent element  60 , of the fastening part  39  of the mounting unit  36  and an end edge  66 , which is associated with the abutment  63 , of the fastening part  39  of the mounting unit  36  (see  FIGS. 11 ,  12  and  15 ). It can thereby be achieved that the detent element  60  in the mounted state is detented, with formation of a mechanically positive connection, in the passage opening  61  of the fastening part  39  of the mounting unit  36  in such a manner that the fastening part  39  of the mounting unit  36  mounted on the end cap  37  is secured at least against withdrawal in a direction opposite to the insertion direction  62 . In this manner there is initially obtained a unit, which can be handled simply and safely, consisting of the end cap  37  and the mounting unit  36  which is inserted thereinto and which is captively and preferably non-detachably connected with the end cap  37 . This unit comprises an insertion unit  97  formed by the fastening part  39  of the mounting unit  36  and the fastening body  41  of the end cap  37 . 
     In a second step the insertion unit  97  can be subsequently inserted into the hollow profile of the board unit  31  as is illustrated by way of example in  FIG. 22 . 
     In a third step subsequent thereto the fastening part  39  of the mounting unit  36  and also the fastening body  41  of the end cap  37  are firmly connected with the hollow body  32  and, in particular, free of separate mechanical fastening means, such as rivets or screws, and with formation of a mechanically positive connection  46 . 1 ,  46 . 2 . In the illustrated exemplifying embodiment not only the mounting unit  46  and the end cap  37  are connected with the hollow profile with formation of a mechanically positive connection  46 . 1 ,  46 . 2 , but also the mounting unit  36  and the end cap  37  are connected together with formation of a mechanically positive connection. Reference is made particularly to  FIGS. 23 and 24  with respect thereto. 
     According to the invention the mechanically positive connection  46 . 1 ,  46 . 2  is achieved by a pressing process producing a local deformation of a wall part  47 . 1 ,  47 . 2  of the hollow profile  32 . The deformation can be achieved by drawing in or pressing in a hole edge region  48  of a hole  49  provided in a wall part  47 . 1 ,  47 . 2  of the hollow profile  32 , here with the help of press dies  51 . 1 ,  51 . 2 ,  51 . 3 ,  51 . 4  ( FIG. 22 ), into one of the recesses  52 . 1 ,  52 . 2 ;  54 . 1 ,  54 . 2  of the fastening part  39  of the mounting unit  36  and of the fastening body  41  of the end cap  37 . In that case the mechanically positive connection  46 . 1  of the mounting unit  36  with the hollow profile  32  and the mechanically positive connection  46 . 2  of the end cap  37  with the hollow profile  32  is produced with simultaneous action of several press dies  51 . 1 ,  51 . 2 ,  51 . 3 ,  51 . 4  which engage the hollow profile  32  in opposite directions  95 ,  96  on longitudinal sides  86 . 1 ,  86 . 2  thereof facing away from one another ( FIG. 22 ). 
     The press dies  51 . 1 ,  51 . 2 ,  51 . 3 ,  51 . 4  here all have an outer diameter  98  which is very much larger than the inner diameter  50  of the passage holes  49  of the hollow profile  32  with the still undeformed hole wall regions  48  and which is smaller than the inner diameter  99  of the passage holes  52 ;  52 . 1 ,  52 . 2  in the fastening limbs  71 . 1  and  71 . 2  of the fastening part  39  of the mounting unit  36  and also smaller than the inner diameter  100  of the passage holes  54 . 1 ,  54 . 2  in the insertion bodies  73 . 1 ,  73 . 2  of the fastening body  41  of the end cap  37 . 
     In the illustrated exemplifying embodiment the press dies can, for example, have an outer diameter  98  of approximately 8 to 10 millimeters. This outer diameter  98  is preferably smaller than or the same size as the inner diameter  99  or  100 , which is increased by twice the wall thickness of the undeformed hole wall region  48  of the hollow body  32 , of the passage holes  52  and  54 , respectively. In that case on deformation of the hollow profile  32 , which consists of steel plate  29 , there is no tearing out of material in the region of the hole edges  48  of the passage holes  49  by drawing or pressing these hole edges  48  into or against the wall parts, which bound the passage holes  52  and  54 , of the mounting unit  36  and of the fastening body  41  of the end cap  37 . 
     Proceeding from the starting situation shown in FIG.  22 —in which the insertion unit  97  formed by the fastening body  41  of the end cap  37  and the fastening part  39  of the mounting unit  36  is inserted into the hollow profile  32  and in which the hole edges  48  of the passage holes  49  of the hollow profile are not yet deformed by the press dies  51 . 1 ,  51 . 2 ,  51 . 3 ,  51 . 4 —for the purpose of production of a mechanically positive connection of the mounting unit  36  with the hollow profile  32  and also of the end cap  37  or the fastening body  41  thereof or with the hollow profile  32 , as well as for the purpose of a mechanically positive connection of the mounting unit  36  with the end cap  37  or the fastening body  41  thereof, the press dies  51 . 1 ,  51 . 2  and preferably also the press dies  51 . 3  and  51 . 4  are moved in a direction  95 ,  96  opposite to one another and preferably parallel to the bore or hole axes of the passage holes  49 ,  52  and  54  until they come into contact with the outwardly facing outer boundary surfaces  89 . 1 ,  89 . 2  of the wall part  47 . 1 ,  47 . 2  of the hollow profile  32 . In the course of continuing movement of the press dies  51 . 1 ,  51 . 2  and/or the press dies  51 . 3 ,  51 . 4  in an opposite direction  95 ,  96  the press dies  51 . 1 ,  51 . 2 ,  51 . 3 ,  51 . 4  move, with simultaneous deformation of the hole wall regions  48  of the hollow profile  32 , in an inward direction and, in particular, with simultaneous widening of the opening of the passage holes  49  until ultimately a deformation or reshaping state is achieved, as is illustrated in  FIG. 23 . As readily apparent therefrom, now the passage holes  52  of the mounting unit  36  and also the passage holes  54 . 1  and  54 . 2  of the end cap  37  or the recess or hole edges thereof are engaged behind hole edges  48 ′ which are integrally connected with the wall part  47 . 1 ,  47 . 2  of the hollow profile  32  and are drawn in to protrude inwardly, of the widened holes  49 ′ of the hollow profile  32 . A secure, firm and nevertheless simply producible mechanically positive connection between the parts to be connected, thus the mounting unit  36 , the end cap  37  and the board unit  31 , is thereby achieved. 
     Consequently, the invention also relates to a method of producing a toe board  30 , particularly designed in accordance with the invention, for a scaffolding  10 , for lateral enclosing of walk and/or work surfaces  16  of scaffolding platforms  15 , with an elongate board unit  31  which is formed by or from a hollow profile  32  of steel, particularly of galvanised steel plate  29 , which is closed at each of its ends  34 . 1 ,  34 . 2 
         which face away from one another in longitudinal direction  33 -with the help of respective closure means  35  and which is provided with a mounting unit  36 ;  36 . 1 ,  36 . 2 , which protrudes in longitudinal direction  33  beyond its respective end  34 . 1 ,  34 . 2  and consists of metal, preferably of steel, particularly of sheet steel  70 , and which can serve for production of a connection with the scaffolding  10  and/or with an adjacent toe board  30 , wherein the hollow profile  32  of the board unit  31  is closed at each of its ends  34 . 1 ,  34 . 2  by a respective end cap  37 , which projects beyond the end  34 . 1 ,  34 . 2  of the hollow profile  32  and covers the end edges  38 . 1 ,  38 . 2  thereof and is composed preferably substantially or preferably entirely of plastics material and which comprises a fastening body  41 , which is connected as one part or multiple part with the cover part  41  and is plugged into the hollow profile  32  and which is firmly connected with this and/or with the mounting unit  36  with the help of fastening means  42 , and that the mounting unit  36  has a fastening part  39  which is inserted into the hollow profile  32  to penetrate, for preference, a recess  44 , particularly a slot  44 , of the cover part  40  and which is firmly connected with the hollow profile  32  of the board unit  31  with the help of fastening means  43 , wherein the mounting unit  36  and/or the end cap  37  is or are connected by a pressing process, which produces a local deformation of a wall part  47 . 1 ,  47 . 2  of the hollow profile  32 , with formation of a mechanically positive connection  46 . 1 ,  46 . 2  with the hollow profile  32 .       

     The invention also relates to a scaffolding  10  comprising scaffolding platforms  15 , which have walk and/or work surfaces  16 , and vertical posts  11  with first connecting units  17  for connection of longitudinal rails  12 , transverse rails  13  and/or diagonals with the help of second connecting units  22  as well as at least one toe board  30 ,  130  according to the invention. A part or a corner region of a scaffolding  10  of that kind is illustrated in  FIGS. 26 and 27  as well as  39  and  40 . The vertical posts  11  have at least one first connecting unit  17  in the form of a rosette  18 , which is preferably formed as an apertured disc  19  and surrounds the vertical post  11  and which serves by recesses  20  for the fastening of further scaffolding elements, particularly a longitudinal rail  12 , a transverse rail  13  and/or a diagonal (not shown in the figures). These scaffolding elements have, as second connecting units  17 , a connecting head  23  which can be plugged onto the rosette  18  and which has a wedge opening  24  for plugging through of a connecting wedge  25  serving for tightening the respective scaffolding element  12 ,  13  to the rosette  18 . The connecting head  23  has vertical outer boundary surfaces  26 . 1  and  26 . 2  running together in wedge-like manner at a wedge angle of preferably approximately 45°. The connecting head  23  additionally has an upper head part  27 . 1  and a lower head part  27 . 2 , between which a slot  28 , which is open towards the front, i.e. towards the post  11 , for plugging of the connecting head  23  onto a rosette  18  is provided. A scaffolding  10  of that kind constructed from vertical posts  11 , longitudinal rails  12  and transverse rails  13  and/or diagonals also comprises scaffolding platforms  15  having walk and/or work surfaces  16 . Scaffolding platforms of that kind can be placed directly on the transverse rail  13  and/or on the longitudinal rail  12 . They can also be provided with suspension aids such as suspension hooks, by means of which they can be placed on the transverse rails  13  and/or on the longitudinal rails  12  or hooked in. A tube connector  21  serving for connecting of a further vertical post is pressed into the vertical post  11  at the upper end. 
       FIG. 26  illustrates how a first toe board according to the invention, which here is a transverse toe board  30 . 1 . 1 , is fixed to the scaffolding  10  or to parts thereof. As apparent, the mounting unit  36 . 1  or the fixing part  101  thereof extends in the space between the connecting wedge  25 , which is driven into the wedge opening  24  of the connecting head  23 , and the vertical post  11 . It is achieved by the cranking of the mounting part  36 . 1  that the board unit  31  and also the end cap  37  are arranged above the walk and work surface  16  of the scaffolding covering  15 . The board unit  31  and also the end cap  37  project beyond the walk and work surface  16  of the scaffolding covering  15  by substantial parts or entirely. In the illustrated exemplifying embodiment the board unit  31  of the toe board  30  rests on the walk and work surface  16  of the scaffolding platform  15 . A gap is formed between the lower edge of the fixing part  101  of the mounting unit  36  and the connecting head  23 . 
     The same scaffolding corner region as in  FIG. 26  is illustrated in  FIG. 27 , wherein now apart from the one transverse toe board  30 . 1 . 1  a longitudinal toe board  30 . 1 . 2  is additionally arranged at an angle of approximately 90 degrees thereto and fixed to the scaffolding  10 . For this purpose initially the longitudinal toe board  30 . 1 . 2  was mounted in such a manner that the transverse slot  84  of the associated mounting unit  36 . 1  faces upwardly. Subsequently, the transverse toe board  30 . 1 . 1  was fixed and hung in position and, in particular, in an arrangement in which the receiving slot  84  of the mounting unit  36 . 1  of the transverse toe board  30 . 1 . 1  is open downwardly. In this manner two toe boards can be fixed simply and securely to a scaffolding  10  in a corner region of that kind, wherein the respective narrow longitudinal end faces or end edges  87 . 1  thereof then lie at the same height. 
     An alternative exemplifying embodiment of a toe board  130  according to the invention is shown together with its part elements and in part views and/or cross sections in  FIGS. 28 and 29  as well as  32  to  40 . In that case, the same parts are provided with the same reference numerals as in the remaining figures. This toe board  130  comprises a hollow profile  132  according to  FIGS. 32 to 35 , an end cap  137  formed with a fastening body  141  (see  FIGS. 36 to 40 ) and a mounting unit  136 ;  136 . 1  with a fastening part  139  (see, in particular,  FIGS. 28 and 29  as well as  38  to  40 ). Apart from that, this toe board  130  differs from the afore-described exemplifying embodiment of a toe board  30  by, in particular, the fact that not only the fastening part  139  of the respective mounting unit  136 ;  136 . 1 , but also the fastening body of the respective end cap  137  are fastened by means of tubular rivets  105  to the hollow profile  132  of the board unit  31 . An improved load-bearing capability of the toe board  130  can thereby be achieved. In the illustrated exemplifying embodiment, according to a preferred refinement only two tubular rivets  105  are provided in each instance for fastening the respective mounting unit  136 ;  136 . 1  and the respective end cap  137  to the hollow profile  132  of the board unit  31 . For this purpose the holes  149  in the hollow profile  132  are designed to be suitable and intended at the outset for reception of the tubular rivets  105  and, in particular, with an inner diameter  150  which, for preference, is slightly larger than the outer diameter of the tubular rivets  105  able to be inserted therein and therethrough. The inner diameter  150  is for preference approximately 11 millimeters (see  FIGS. 32 to 35 ). The outer diameter of the tubular rivets  105  is preferably approximately 10 millimeters prior to the riveting or deforming. 
     In the finally mounted state of the toe board  130  according to this form of embodiment as shown in  FIGS. 36 and 37  the respective tubular rivet  105  penetrates not only two of the holes  149 , which are respectively arranged coaxially to one another, of the hollow profile  132 , but also a passage hole  52 . 1  or  52 . 2  of the two passage holes  52 . 1 ,  52 . 2  of the fastening part  139  of the mounting unit  136 ;  136 . 1  as also in each instance two of the passage holes  54 . 1  and  54 . 2 , which are arranged coaxially to one another, of the fastening body  141  of the end cap  137 , so that the mounting unit  136  and the end cap  137  are mechanically positively connected, or connected with formation of a mechanically positive connection, with the hollow profile  132  in common by the tubular rivets  105  and fastened thereto. In this manner the mounting unit  136  and the end cap  137  are also mechanically positively connected, or connected with formation of a mechanically positive connection, with one another in common by the tubular rivets  105 . 
     In the finally mounted state each tubular rivet  105  has at each of its two ends facing away from one another a respective rivet head  106 . 1  or  106 . 2 . Each rivet head  106 . 1 ,  106 . 2  engages over a respective hole edge of the holes  149  of the hollow profile  132  at the outer side in such a manner that the tubular rivet  105  is connected in force-locking and shape-locking manner with the hollow profile  132  and fastened thereto. 
     The mounting and fastening of the mounting units  136 ;  136 . 1  and the end caps  137  at or to the hollow profile  132  of the board unit  31  with formation of a toe board  130  according to the invention is again carried out in three steps, wherein the first step and the second step correspond with the first and second steps already described in conjunction with the first exemplifying embodiment of a toe board  30 . 
     Accordingly, in a first step the mounting units  136 ;  136 . 1  are each firmly connected with the end cap  137 , wherein the fastening body  141  of the end cap  137  and the fastening part  139  of the mounting unit  136 ;  136 . 1  each form an insertion unit  197 . Thus, initially the respective mounting unit  136 ;  136 . 1  is inserted, with its fastening limbs  71 . 1  and  71 . 2  foremost in insertion direction  62  ( FIGS. 28 and 31 ), through the slot  45  of the cover part  140  of the end cap  137  into the respectively associated receiving cavity  78 . 1  and  78 . 2  of the end cap  137 . In that case the free insertion ends of the fastening limbs  71 . 1 . and  71 . 2  run on the part, which extends into the respective receiving cavity  78 . 1 ,  78 . 2 , of the respective detent element  60  and in the course of the continuing insertion of the mounting unit  136 ;  136 . 1  into the end cap  137  the resilient detent elements  60  are pressed inwardly against the spring forces thereof. In the course of further plugging-on or plugging-in of the fastening part  139  of the mounting unit  136  in insertion direction  62  into the end cap  137  the respective detent element  60  ultimately automatically detents in the respective recess  61  of the fastening limbs  71 . 1  and  71 . 2  of the fastening part  139  of the mounting unit  136 . The plugging of the fastening part  139  of the mounting unit  136  onto or into the end cap  137  is limited by an abutment  63  (cf.  FIGS. 10 and 11 ), against which the fastening part  139  of the mounting unit  136  can abut during plugging onto or into the end cap  137  so that the mounting unit  136  in the mounted state is disposed in a position relative to the end cap  137  preferably predetermined by the position of the abutment  136 . The abutment  63  and the detent element  60  of the end cap  137  are arranged at a spacing  64  which is the same as or slightly larger than the spacing  65  between the recess  61 , which is associated with the detent element  60 , of the fastening part  139  of the mounting unit  136  and an end edge  66 , which is associated with the abutment  63 , of the fastening part  139  of the mounting unit  136  (cf.  FIGS. 11 ,  12  and  15 ). It can thereby be achieved that the detent element  60  in the mounted state detents, with formation of a mechanically positive connection, in the passage opening  61  of the fastening part  139  of the mounting unit  136  in such a manner that the fastening part  139  of the mounting unit  136  mounted on the end cap  137  is secured at least against withdrawal in a direction opposite to the insertion direction  62 . In this manner there is obtained at the outset a unit, which can be handled simply and safely, consisting of the end cap  137  and the mounting unit  136  which is plugged thereinto and which is captively and preferably non-detachably connected with the end cap  137 . This unit comprises an insertion unit  197 , which is formed by the fastening part  139  of the mounting unit  136  and the fastening body  141  of the end cap  137 . 
     In a second step the insertion unit  197  can be subsequently plugged into the hollow profile  132  of the board unit  31  (see the mounting position according to  FIG. 36 ). 
     In a third step subsequent thereto the fastening part  139  of the mounting unit  136  and also the fastening body  141  of the end cap  137  are fixedly connected with the hollow body  132  and, in particular, in this exemplifying embodiment with the help of the tubular rivets  105  as already described in the foregoing in connection with  FIGS. 36 and 37 . It will be obvious that depending on need use can be made, instead of the mounting units  136 . 1 , also the mounting units  136 . 2  shown in  FIGS. 30 and 31 . 
     In both exemplifying embodiments of the toe boards  30  and  130 , thus not only a case of fastening of the fastening part  39  of the respective mounting unit  36 ;  36 . 1 ,  36 . 2  and/or of the fastening body  41  of the respective end cap  37  to the hollow profile  32  by means of locally deformed wall parts  47 . 1 ,  47 . 2  or hole edge regions  48 ′,  49 ′ of the hollow profile  32 , but also in the case of fastening of the fastening part  139  of the respective mounting unit  136 ;  136 . 1  and/or the fastening body  141  of the respective end cap  137  by means of rivets  105 , particularly tubular rivets  105 , to the hollow profile  132 , the mounting unit  36 ;  136  and/or the end cap  37 ;  137  is or are fastened exclusively by means of mechanical fastening means and free of welding to the hollow profile  32 ;  132  of the board unit  31 . 
     The illustrations in  FIGS. 39 and 40  correspond with the illustrations in  FIGS. 26 and 27 , wherein, however, now an alternative form of embodiment of a transverse toe board  130 . 1 . 1  is shown. The hollow profile  132  thereof is designed in accordance with the alternative variant of embodiment shown in  FIGS. 32 to 35 . A fastening body  141  of an end cap  137  (see  FIGS. 36 to 38 ) and a fastening part  139  of a mounting unit  136 . 1  designed in accordance with the variant of embodiment shown in  FIGS. 28 and 29  are fastened to the hollow profile  132  by means of tubular rivets  105 . 
     Accordingly, in  FIG. 39  there is shown a three-dimensional illustration of how a further toe board  130  according to the invention, which is here a transverse toe board  130 . 1 . 1 , is fixed to the scaffolding  10  or to parts thereof. The mounting unit  136 . 1  or the fixing part  101 . 3  thereof extends in the space between the connecting wedge  25 , which is driven into the wedge opening  24  of the connecting head  23 , and the vertical post  11 . It is achieved by the cranking of the mounting part  136 . 1  that the board unit  31  and also the end cap  137  are arranged above the walk and work surface  16  of the scaffolding platform  15 . The board unit  31  and also the end cap  37  project beyond the walk and work surface  16  of the scaffolding covering  15  to substantial parts or entirely. In the illustrated exemplifying embodiment the board unit  31  of the toe board  30  rests on the walk and work surface  16  of the scaffolding covering  15 . A gap is formed between the lower edge of the fixing part  101  of the mounting unit  36  and the connecting head  23 . 
     The same scaffolding corner region as in  FIG. 39  is illustrated in  FIG. 40 , wherein now two toe boards  130  are provided. In that case, apart from the transverse toe board  130 . 1 . 1  in addition a longitudinal toe board  130 . 1 . 2  is provided, which is arranged at an angle of, here, approximate 90 degrees thereto and fixed to the scaffolding  10 . For this purpose initially the longitudinal toe board  130 . 1 . 2  was mounted in such a manner that the transverse slot  84  of the associated mounting unit  136 . 1  faces upwardly. Subsequently, the transverse toe board  130 . 1 . 1  was fixed and hung in place and, in particular, in an arrangement in which the receiving slot  84  of the mounting unit  136 . 1  of the transverse toe board  130 . 1 . 1  is open downwardly. In this manner two toe boards can be fixed simply and securely to a scaffolding  10  in a corner region of that kind, wherein the respective narrow longitudinal end faces or end edges  87 . 1  thereof then lie at the same height. 
     REFERENCE NUMERAL LIST 
     
         
           10  scaffolding 
           11  post 
           12  longitudinal rail 
           13  transverse rail 
           15  scaffolding platform 
           16  walk and work surface of  15   
           17  first connecting unit 
           18  rosette 
           19  apertured disc 
           20  recess 
           21  tube connector 
           22  second connecting unit 
           23  connecting head 
           24  wedge opening 
           25  connecting wedge 
           26 . 1  vertical outer boundary surface of  23   
           26 . 2  vertical outer boundary surface of  23   
           27 . 1  upper head part 
           27 . 2  lower head part 
           28  slot 
           29  steel plate 
           30  toe board 
           30 . 1  toe board 
           30 . 1 . 1  transverse toe board 
           30 . 1 . 2  longitudinal toe board 
           30 . 2  toe board 
           31  board unit 
           32  hollow profile 
           33  longitudinal direction 
           34  end of  32   
           34 . 1  first end of  32   
           34 . 2  second end of  32   
           35  closure means 
           36  mounting unit 
           36 . 1  mounting unit 
           36 . 2  mounting unit 
           37  end cap 
           38  end edge of  32   
           38 . 1  first end edge of  32   
           38 . 2  second end edge of  32   
           39  fastening part of  36   
           40  cover part 
           41  fastening body of  37   
           42  fastening means 
           43  fastening means 
           44  recess 
           45  slot 
           46 . 1  mechanically positive connection 
           46 . 2  mechanically positive connection 
           47 . 1  wall part of  32   
           47 . 2  wall part of  32   
           48  hole edge region of  49   
           48 ′ hole edge of  49 ′ 
           49  hole in  32   
           49 ′ hole (deformed) 
           50  inner diameter of  49   
           51  press die 
           51 . 1  press die 
           51 . 2  press die 
           51 . 3  press die 
           51 . 4  press die 
           52  recess/passage hole 
           52 . 1  recess/passage hole 
           52 . 2  recess/passage hole 
           53  recess/passage hole of  52   
           54  recess/passage hole 
           54 . 1  recess/passage hole 
           54 . 2  recess/passage hole 
           55  recess/passage hole of  54   
           56  longitudinal axis of  32   
           57  protruding unit 
           58  protrusion 
           59  projection 
           60  detent element 
           61  recess/passage opening 
           62  insertion direction 
           63  abutment 
           64  spacing 
           65  spacing 
           66  end edge of  39   
           67  inner contour of  61   
           68  outer contour of  60   
           69 . 1  recess in  40   
           69 . 2  recess in  73 . 1 ,  73 . 2   
           70  sheet steel 
           71  fastening limb 
           71 . 1  first fastening limb 
           71 . 2  second fastening limb 
           72  spacing 
           73 . 1  first insertion body 
           73 . 2  second insertion body 
           74  spacing 
           75  end surface of  37   
           76  angle 
           77  abutment 
           78 . 1  receiving cavity 
           78 . 2  receiving cavity 
           79  blank 
           80 . 1  longitudinal rail 
           80 . 2  longitudinal rail 
           81 . 1  edge rail 
           81 . 2  edge rail 
           82 . 1  cross-section 
           82 . 2  cross-section 
           83 . 1  longitudinal end of  32   
           83 . 2  longitudinal end of  32   
           84  slot 
           85  slot base 
           86 . 1  first wide longitudinal side of  31   
           86 . 2  second wide longitudinal side of  31   
           87 . 1  first narrow longitudinal end face of  31   
           87 . 2  second narrow longitudinal end face of  31   
           88 . 1  longitudinal rib/corrugation (outward) 
           88 . 2  longitudinal rib/corrugation (outward) 
           88 . 3  longitudinal rib/corrugation (inward) 
           88 . 4  longitudinal rib/corrugation (inward) 
           89 . 1  outer boundary surface of  86 . 1   
           89 . 2  outer boundary surface of  86 . 2   
           90 . 1  spacing 
           90 . 2  spacing 
           91  double wall region 
           92  angle 
           93  butt joint 
           94  width of  91   
           95  press direction 
           96  press direction 
           97  insertion unit 
           98  outer diameter of  51   
           99  inner diameter of  52 ;  52 . 1 ,  52 . 2   
           100  inner diameter of  54 ;  54 . 1 ,  54 . 2   
           101  fixing part 
           101 . 1  fixing part 
           101 . 2  fixing part 
           101 . 3  fixing part 
           101 . 4  fixing part 
           102  hole 
           103  end edge 
           104  end of  37   
           105  rivet/tubular rivet 
           106 . 1  rivet head 
           106 . 2  rivet head 
           130  toe board 
           130 . 1 . 1  transverse toe board 
           130 . 1 . 2  longitudinal toe board 
           132  hollow profile 
           136  mounting unit 
           136 . 1  mounting unit 
           136 . 2  mounting unit 
           137  end cap 
           139  fastening part of  136   
           140  cover part 
           141  fastening body of  137   
           146 . 1  mechanically positive connection 
           146 . 2  mechanically positive connection 
           148  hole edge of  149   
           149  hole in  32   
           150  inner diameter of  149   
           157  projection unit 
           160  corrugation 
           160 . 1  corrugation 
           160 . 2  corrugation 
           161  bending over 
           162  bending over 
           163 . 1  limb 
           163 . 1  limb 
           164 . 1  limb 
           164 . 2  limb 
           197  insertion unit