railing system

Abstract

Modular railing system with a post (3) and with a mounting rail (2) which is provided for horizontal attachment to an end face (12) of a balcony slab (3), to a terrace or a vertical building or structure surface and on which a holder (4) is arranged slidably in a longitudinal direction of the mounting rail (2) and can be fixed against displacement and the post (3) with the holder (4) is detachably attached to the mounting rail (2) at a distance from the mounting rail (2), characterized in that the post (3) has a groove (16) extending in a longitudinal direction of the post (3) as a receiving for a head (23) of the holder (4) opposite to the groove (16) and that the holder (4) has several heads (23) opposite to the groove (16) of the post (3) at different distances from a foot of the holder (4),with which the holder (4) is slidably arranged and fixed against displacement on the mounting rail (2), and that the holder (4) has constrictions (24) as predetermined separation points on the sides of the heads (23) facing the post (3).

Description

The invention relates to a modular railing system for, for example, a balcony, a terrace or, more generally, a building or other structure, comprising the features of the preamble of claim 1. German patent application DE 197 14 060 A1 discloses a railing system for a balcony comprising a post and a mounting rail that is horizontally attached to an end face of a balcony slab. The mounting rail has two parallel T-slots extending longitudinally along the rail, to which the post is attached using T-head bolts. Utility model DE 20 2016 100 720 U1 discloses a balcony railing with posts having a C-profile and being attached to an end face of a balcony slab by means of brackets. The base plate is attached to the end face of the balcony slab. A web connects the base plate to a retaining element whose cross-section corresponds to an internal cross-section of the post and which is inserted into the C-profile of the post for fastening. The object of the invention is to propose a railing system that, due to its modular design, can be easily adapted to various conditions such as railing length, post spacing, and post height. A further aspect of the invention is the simple installation of the railing system at different intervals on, for example, a balcony slab, terrace, building, or other structure. This problem is solved according to the invention by the features of claim 1. The dependent claims relate to advantageous embodiments and further developments of the invention. The railing system according to the invention comprises a mounting rail, one or preferably several identical posts, and a bracket for each post, with which the posts are attached to the mounting rail or to a balcony slab, a terrace, or generally to a building or other structure. The mounting rail is, in particular, a straight profile rail with a cross-section that remains constant in shape and size along its length. It is provided that the mounting rail is attached with its longitudinal direction running horizontally to a vertical surface of a building or other structure, for example, to an end face of a balcony slab or a terrace.The mounting rail serves for the temporary attachment of the posts to the brackets; in particular, it aligns the brackets in a straight line parallel to the longitudinal direction of the mounting rail, i.e., congruently with each other when viewed parallel to the longitudinal direction of the mounting rail. Preferably, the brackets are guided along the mounting rail so that they can slide along its longitudinal direction and are fixed or lockable against displacement. Final fastening of the brackets is provided through the mounting rail or also above and / or below the mounting rail to the balcony slab, the terrace, or generally to the building or structure. The bracket(s) are or will be arranged so that they can slide along the mounting rail in its longitudinal direction and, after being aligned along the mounting rail, will be fixed against displacement. "Alignment" means positioning the bracket(s) at the points along the mounting rail where the posts are to be located. The posts are arranged on the mounting rail at a distance perpendicular to its longitudinal direction, using the brackets, such that the posts are spaced from the mounting surface of the rail where it is attached to the balcony slab, terrace, building, or other structure. The posts arranged on the mounting rail via the brackets lie in a common plane parallel to both the longitudinal direction of the mounting rail and the mounting surface. By arranging the mounting rail on a vertical mounting surface, the posts are vertically aligned after being attached to the mounting rail via the brackets. The brackets can be attached to the mounting rail first, followed by the posts, or the brackets can be attached to the mounting rail along with the posts.The posts can be easily positioned at predetermined intervals or locations along the mounting rail thanks to their longitudinal adjustability, and then secured against displacement. The mounting rail aligns the posts in a common plane, parallel to each other and preferably perpendicular to the rail. This simplifies the alignment of the railing system's posts. The holder has several heads, symmetrical to a groove in the post, positioned at varying distances from a base of the holder. The heads are preferably integral parts of the holder and formed as single components. The base of the holder is a section or area of ​​the holder facing and associated with the mounting rail, which is or will be mounted on the mounting rail. By positioning one of the holder heads in the groove of the post, the post can be positioned at different distances from the base of the holder and thus from the mounting rail. Heads located further away from the base of the holder must first be detached from the holder. The head of the holder positioned in the groove of the post guides the post slidably along the holder in its longitudinal direction and holds the post transversely to its longitudinal direction. The post is secured to the holder, for example, by a screw. For the arrangement of the holders on the mounting rail, one embodiment of the invention provides a mounting rail with one or more T-slots extending along its length. The holders are guided slidably in the longitudinal direction of the mounting rail in the T-slots by means of, for example, T-head screws, T-slot nuts ("T-nuts") or other fastening elements, and are fixed in their position by tightening the T-head screws, T-slot nuts or other fastening elements. To simplify the arrangement of the brackets, both with and without the posts on the mounting rail, one embodiment of the invention provides a support extending along the longitudinal direction of the mounting rail. This support can, for example, be a horizontal leg, an inner corner extending along the longitudinal direction of the mounting rail, or a strip-shaped web extending along the longitudinal direction of the mounting rail and projecting from an outer surface of the mounting rail opposite the mounting side. To position the holder on the post perpendicular to the post, one embodiment of the invention provides a groove running longitudinally in the post to receive a holder head that is opposite to the groove. The "holder head" is a region or section of the holder facing the post and corresponding to the groove in the post that forms the receiving area for the holder head. The holder head also has a profile, that is, a cross-section that remains constant in a longitudinal direction of the holder or parallel to the longitudinal direction of the post and is opposite to the groove in the post. The groove in the post can be undercut, i.e., for example, a T-slot. Preferably, the groove is not undercut, such that the post can be placed onto the holder head with its groove. The groove positions the holder head perpendicular to the post. In a further development of the invention, the groove in the post, which forms the receptacle for the head of the holder, has a channel-shaped depression at its base that extends longitudinally along the post. The holder preferably has constrictions at the heads as predetermined separation points, where the unused heads are cut off from the holder. At these predetermined separation points, the holder is no wider than the depression at the base of the groove in the post. This provides space for any remaining protrusion of the actually used head of the holder within the depression at the base of the groove in the post. The post can be positioned with its groove onto the head of the holder in such a way that the head of the holder rests laterally on the depression at the base of the groove, and any remaining protrusion of the used head of the holder after the unused heads have been cut off projects into the depression at the base of the groove in the post. To fasten the post to the bracket, one embodiment of the invention provides a channel extending longitudinally along the post, in which an abutment is arranged, the abutment having a threaded hole. The channel is, in particular, a tube extending longitudinally along the post, arranged within the post, and integral with the post; that is, the channel is part of the post's tubular profile. The abutment is a slidable element within the channel, for example, a rod-shaped element, which is, for example, no longer than the bracket or the head of the bracket in the longitudinal direction of the post. For a rigid connection of the post to the bracket, a screw, a threaded rod, or, more generally, a threaded element is screwed through the bracket into the threaded hole of the abutment in the channel within the post and tightened.A hole must be drilled into the channel in the post or the threaded element must be attached in some other way. The abutment can have multiple threaded holes for attaching the post to the bracket, with several threaded elements screwed into these holes. In embodiments of the invention, the post(s) are tubular profiles, in particular featuring a longitudinally extending groove to receive the head of the bracket and / or a channel for the abutment for screwing the post to the bracket. Perpendicular to a longitudinal center plane through the post(s), which are arranged with one or more brackets on the mounting rail, the posts preferably exhibit higher bending stiffness than parallel to the longitudinal center plane. The railing system according to the invention is therefore more rigid perpendicular to the longitudinal center plane through its posts than parallel to the longitudinal center plane. To cover the groove running longitudinally along the post, which forms the receptacle for the head of the holder, one embodiment of the invention provides a cover strip that is snapped onto the post, either covering the groove or being snapped onto it. The cover strip can be considered a strip-shaped cover; it is or is recessed in the area of ​​the holder. In a preferred embodiment of the invention, the railing system has a handrail that is detachably arranged at an upper end of the post furthest from the holder. Preferably, the handrail spans two or more posts, that is, the handrail connects two or more adjacent posts at their upper ends furthest from the holders. To attach the handrail to the post, one embodiment of the invention provides a T-slot extending longitudinally in the handrail, in which a T-slot nut is slidably arranged longitudinally along the handrail. A screw, threaded rod, or generally a threaded element is screwed into the T-slot nut, connecting the handrail to the post. To prevent the T-slot nut from rotating from a position that engages behind the T-slot of the handrail and is inclined to the longitudinal direction of the handrail, into a position aligned with the longitudinal direction of the handrail, in which the T-slot nut no longer engages behind the T-slot but can be removed from or inserted into the T-slot, one embodiment of the invention provides a backstop for the T-slot nut. The backstop prevents the T-slot nut from rotating into the position aligned with the longitudinal direction of the handrail, for example, by bearing against a circumferential surface or a corner of the T-slot nut. To allow the handrail to be extended as desired, one embodiment of the invention provides a tubular profile as the handrail or as a component thereof. The tubular profile has a longitudinal T-slot and / or a longitudinal channel into which a connector can be inserted to join the tubular profile to another tubular profile, thus extending the handrail. An angled connector enables the arrangement and connection of two tubular profiles at an angle to each other, thereby creating an angled handrail. The connector is, for example, a strip-shaped or rod-shaped element with a rectangular cross-section, which is inserted into the T-slot or channel at the ends of the two tubular profiles to be joined and clamped in place, for example, with one or more (clamping) screws or rivets at the ends of the tubular profiles.As mentioned, the connector can be designed as an angle. A joint as a connector, or a connector with a joint for arranging and connecting two pipe profiles at an angle to each other that can be adjusted by pivoting, is also possible. All features mentioned in the description and / or illustrated in the drawing can be implemented individually or in any combination in embodiments of the invention. Embodiments of the invention that include not all, but only some, of the features of a claim, including independent claims, are possible. Embodiments of the railing system according to the invention without the mounting rail are also possible. The invention is explained in more detail below with reference to an embodiment shown in the drawing. The figures show: Fig. 1 a railing system according to the invention in a perspective view; Fig. 2 the railing system from Fig. 1 from another perspective; Fig. 3 an end view of a mounting rail of the railing system from Fig. 1 and Fig. 2; Fig. 4 an end view of a post of the railing system from Fig. 1 and Fig. 2; Fig. 5 a bracket of the railing system from Fig. 1 and Fig. 2 in a perspective view; Fig. 6 an end view of the bracket from Fig. 5; Fig. 7 an end view of a handrail of the railing system from Fig. 1 and Fig. 2; Fig. 8 a view of a mounting of the handrail from Fig. 7 on a post according to Fig. 4; Fig. 9 a connection of the handrail from Fig. 7 with another handrail. and Fig. 10 one with a holder according to Fig. 5 and Fig. 6 on a mounting rail according to Fig.3 posts attached to a balcony slab according to Fig. 4 of the railing system from Fig. 1 and Fig. 2 in a perspective view with infill holders on the post. The railing system 1 shown in Fig. 1 and Fig. 2 according to the invention is modular in design and has a mounting rail 2, several posts 3 each with a holder 4 and a handrail 5. Fig. 3 shows an end view of the mounting rail 2: in the exemplary embodiment, the mounting rail 2 is a straight profile rail in the shape of a strip, which has hollow chambers 6 extending in one longitudinal direction of the mounting rail 2 or profile rail and two T-slots 7 also extending in the longitudinal direction of the mounting rail 2 or profile rail near its narrow longitudinal edges. On one narrow longitudinal edge, which is also referred to here as the underside 8 of the mounting rail 2 or profile rail, the mounting rail 2 has a strip-shaped support 10 for the holders 4, projecting perpendicularly from its outer side 9. The outer side 9 is here referred to as one of the two large longitudinal sides of the mounting rail 2. The outer side 9 of the mounting rail 2 has a flat, elongated, rectangular surface that extends over the length of the mounting rail 2.The two T-slots 7 are arranged in the outer side 9 of the mounting rail 2, that is, the two T-slots 7 are open on the outer side 9 of the mounting rail 2. One of the large sides of the mounting rail 2 opposite the outer surface 9 is here referred to as the mounting side 11. The mounting side 11 runs parallel to the outer surface 9 on a side of the mounting rail 2 opposite the outer surface 9 and also has a flat, elongated, rectangular surface extending along the length of the mounting rail 2. The mounting rail 2 is intended to be attached with its mounting side 11 to an end face 12 of a balcony slab 13 or to a vertical surface of a terrace (not shown), or generally to a vertical surface of a building or structure (not shown). The mounting rail is intended to be arranged horizontally, that is, with its longitudinal direction running horizontally and with its outer surface 9 and mounting side 11 vertically on the balcony slab 13, terrace, building, or structure. On its upper surface 14, the mounting rail 2 has a strip-shaped water deflector 15 extending longitudinally along the mounting rail 2. This water deflector is directed obliquely upwards from the outer surface 9 of the mounting rail 2 and terminates in a plane with the mounting side 11. When the mounting rail 2 is attached with its mounting side 11 against a building or structure surface, the water deflector 15 rests against the building or structure surface and can be sealed, for example, with silicone or another sealant to prevent water from penetrating between the mounting rail 2 and the building or structure surface. Fig. 4 shows an end view of one of the posts 3 of the railing system 1 according to the invention. The post 3 has a straight tubular profile with an approximately oval cross-section. At one apex of the approximately oval cross-section, the tubular profile of the post 3 has a continuous indentation running along one longitudinal direction of the post 3, forming a groove 16 extending along the longitudinal direction of the post 3 with a channel-shaped recess 17, also extending along the longitudinal direction of the post 3, located at the transverse center of a groove base of the groove 16. The groove 16 forms a receptacle for a head 23 of the holder 4, which will be explained later and positions the post 3 relative to the holder 4 transversely to the longitudinal direction of the post 3 and transversely to the holder 4. On one side of the groove base facing away from the groove 16, the post 3 has a channel 18 running in its longitudinal direction with - in the exemplary embodiment - a rectangular cross-section. Due to its approximately oval cross-section and internal ribbing, the post 3 exhibits a higher bending stiffness perpendicular to a longitudinal median plane of the post 3 parallel to the longitudinal direction of the mounting rail 2 than parallel to the longitudinal median plane. The bending stiffness of the posts 3 of the railing system 1 according to the invention is higher perpendicular to a longitudinal median plane of the posts 3 than parallel to the longitudinal median plane. On both sides, laterally outside the groove 16, the post 3 has grooves running in its longitudinal direction, into which a cover strip 19, curved in its transverse direction, is snapped, which spans and covers the groove 16. The holder 4, shown as a component in Figures 5 and 6, has a base plate 20 – approximately square in the exemplary embodiment – ​​which can also generally be considered the foot of the holder 4. A double-walled shaft 21 projects from one side of the base plate 20 at a transverse center point and perpendicular to the base plate 20. In the exemplary embodiment, the shaft 21 is integral with the base plate 20 and an integral part of the holder 4. Ribs 22 project laterally from both sides of the shaft 21 at equal intervals from the base plate 21, running parallel to the base plate 21. These ribs are arranged in pairs and each forms a head 23 of the holder 4, which is opposite to the groove 16 of the posts 3 and is located at various distances from the base plate 20 of the holder 4.On the sides of the heads 23 facing away from the base plate 20, the shaft 21 has groove-shaped indentations 24 on both outer sides as predetermined separation points for separating one or more heads 23 from the holder 4. Separating one or more heads 23 from the holder 4 allows the posts 3 to be attached to the holder 4 at different distances from the base plate 20, and thus allows the posts 3 to be attached at different distances from the mounting rail 2 of the railing system 1 according to the invention and at different distances from the end face 12 of the balcony slab 13 or, more generally, from the building or structure surface on which the railing system 1 is or will be arranged. Before attaching the post 3 to the bracket 4, a portion of the heads 23 of the bracket 4 is cut off at one of the notches 24, unless the post 3 is to be attached to the head 23 furthest from the base plate 20 of the bracket 4. This allows the distance of the post 3 from the base plate 20 of the bracket 4 to be adjusted to the intervals specified by the heads 23. The head 23 of the holder 4, which is furthest from the base plate 20 and remains attached to the holder 4, is then inserted into the groove 16 of the post 3, or conversely, the post 3 is placed onto the head 23 of the holder 4 with its groove 16. As described above, the groove 16 of the post 3 forms a receptacle for the head 23 of the holder 4, which positions the head 23 of the holder 4 in the groove 16 of the post 3, i.e., aligns the post 3 perpendicular to both the post 3 and the holder 4. Along the length of the post 3, the holder 4, with its head 23, is slidable in the groove 16 of the post 3 and is positioned at a desired location along the length of the post 3. Any remaining protrusion of the shaft 21 on the side of the head 23 facing away from the base plate 20 after one or more of the heads 23 of the holder 4 have been separated from the shaft 21 of the holder 4 at the corresponding constrictions 24, projects into the recess 17 in the middle of the groove base of the groove 16 in the post 3 such that the head 23 of the holder 4 rests against the groove base on both sides of the recess 17 and is not held at a distance from the groove base of the groove 16 in the post 3 by any remaining protrusion of the shaft 21 of the holder 4. To attach the post 3 to the bracket 4, an abutment 25 is inserted into the channel 18 of the post 3. In the illustrated embodiment of the invention, the abutment 25 is a rod with a rectangular cross-section corresponding to the inner circumference of the channel 18 of the post 3 and has—in this embodiment—two threaded holes 26. Screws (not shown in the drawing) are screwed from the base plate 20 of the bracket 4 through the double-walled shaft 21 into the threaded holes 26 of the abutment 25, and by tightening the screws, the post 3 is rigidly connected to the bracket 4. The bracket 4 has screw holes 27 for the screws, the openings of which are visible in the head 23 of the bracket 4 in Fig. 5. The post 3 must be drilled through at the bottom of its groove 16 for the screws. Instead of screws, other threaded elements, such as a threaded rod, can be used (not shown). After the post 3 is attached to the bracket 4, the cover strip 19 is snapped onto the post 3. Before snapping it on, the cover strip is either recessed in the area of ​​the bracket 4 or extends only as far as the bracket 4. Cover strips 19 can be snapped onto the post 3 on both sides of the bracket 4. The holder 4, with its base plate 20, is then positioned against the outer surface 9 of the mounting rail 2 such that an edge of the base plate 20 rests on the support 10 of the mounting rail 2 and the shaft 21 of the holder 4 projects perpendicularly from the mounting rail 2 and is aligned in the longitudinal direction of the mounting rail 2. The post 3 attached to the holder 4 is aligned perpendicular to the longitudinal direction of the mounting rail 2 and parallel to its outer surface 9 and mounting side 11, and is spaced from the outer surface 9 of the mounting rail 2. The holder 4 is attached to the mounting rail 2 at its base plate 20 using hammerhead bolts (not shown), the heads of which are inserted into the T-slots 7 of the mounting rail 2, or using T-slot nuts (not shown) that are inserted into the T-slots 7 of the mounting rail 2, or using other fastening elements.As long as the hammerhead screws or T-slot nuts are not tightened, the post 3 together with the holder 4 can be moved in the longitudinal direction of the mounting rail 2. As many posts 3 as required for the respective railing are arranged on the mounting rail 2, each with a bracket 4. The distances between the posts 3 are adjusted by sliding them along the length of the mounting rail 2, or the posts 3 are moved to their designated positions along the length of the mounting rail 2. Once the posts 3 are in their designated positions, the hammerhead bolts or T-slot nuts (not shown) are tightened, thus securing the brackets 4 and the posts 3 to the mounting rail 2. This is a preliminary installation. The posts 3 are ultimately anchored through the mounting rail 2 into the balcony slab 13 or terrace, or generally to a vertical surface of a building or structure. The base plate 20 of the brackets 4 has screw holes for this purpose. The mounting rail 2 must be drilled through, and anchor holes must be drilled for anchors to secure the brackets 4 to their base plates 20 in the balcony slab 13 or terrace, or in the building or structure. Fig. 7 shows an end view of the handrail 5: the handrail 5 has a straight hollow profile – in the exemplary embodiment circular tube-shaped – with a channel-shaped recess extending longitudinally along the handrail 5 at a circumferential point, forming a groove 28 extending longitudinally along the handrail 5. Within the groove 28, the handrail 5 has a T-slot 29, which also extends longitudinally along the handrail 5 and is open towards the groove 28. The handrail 5 is mounted on rod-shaped handrail brackets 30, which project longitudinally from the upper ends of the posts 3, furthest from the brackets 4 and facing the handrail 5. For fastening, two T-slot nuts 31 are arranged on each post 3, on either side of the handrail bracket 30, in the T-slot 29 of the handrail 5 and screwed to a strip-shaped support plate 32, which is inserted into the groove 28 of the handrail 5 (Fig. 8; in Fig. 8, the handrail 5 itself is not shown so that the T-slot nuts 31 and the support plate 31 are visible). The support plate 32 is placed on an end of the handrail bracket 30 furthest from the post 3 and screwed to the handrail bracket 30 with a screw 33. The head of the screw 33 forms an anti-rotation device 34 for the T-slot nuts 31: the head of the screw 33 is positioned so close to the T-slot nuts 31 that, in a position inclined to the longitudinal direction of the handrail 5, in which they engage behind the T-slot 29 of the handrail 5, the T-slot nuts 31 bear against the head of the screw 33 forming the anti-rotation device 34 with an edge or circumferential surface and are thus prevented from rotating into a position in which they are aligned longitudinally with the handrail 5 and do not engage behind its T-slot 29. The invention does not preclude a differently designed anti-rotation device for the T-slot nuts 31. Like the posts 3, the handrail 5 also has a cover strip 35 that is curved in its transverse direction and runs in its longitudinal direction, which is snapped into grooves of the handrail 5 on both sides of the groove 28 and covers the groove 28. To extend the handrail 5, it can be connected to another handrail, which is not shown in Fig. 9, as depicted. For this purpose, a strip-shaped or rod-shaped connector 36, whose cross-section matches the inner circumference of the T-slot 29 of the handrail 5, is inserted into the T-slot 29 at one end of the handrail 5 up to approximately its longitudinal midpoint and clamped with a clamping screw. The second handrail, which is not shown in Fig. 9 as stated, is placed onto the connector protruding from the first handrail 5 via its T-slot 29 and also clamped with a clamping screw. To connect two handrails 5 at an angle, an angle connector 37, shown next to the straight connector 36 in Fig. 9, is inserted into the T-slot 29 of one handrail 5 in place of the straight connector 36, and another handrail is placed onto an angled leg of the angle connector 37. The angle connector 37 shown in the exemplary embodiment has a 90° angle for connecting two handrails 5 at a 90° angle. For other angles, angle connectors with an angle other than 90° can be used (not shown). A joint connector 38 with a joint is also possible, as shown in Fig. 9 next to the straight connector 36. The joint allows the joint connector 38 to connect two handrails 5 at any angle to each other. To secure plate-shaped infill panels (not shown) between the posts 3 and under the handrail 5, infill holders 39 are attached to the facing sides of the posts 3, as shown in Fig. 10. Glass panes, sheet metal, wood, or plastic panels can be attached to or within the infill holders 9 (not shown). Alternatively, rods can be installed between the posts 3 and under the handrail 5, or cables can be stretched between them (not shown).

Claims

Modular railing system with a post (3) and with a mounting rail (2) which is provided for horizontal attachment to an end face (12) of a balcony slab (3), to a terrace or a vertical building or structure surface and on which a holder (4) is arranged slidably in a longitudinal direction of the mounting rail (2) and can be fixed against displacement and the post (3) with the holder (4) is detachably attached to the mounting rail (2) at a distance from the mounting rail (2), characterized in that the post (3) has a groove (16) extending in a longitudinal direction of the post (3) as a receiving for a head (23) of the holder (4) opposite to the groove (16) and that the holder (4) has several heads (23) opposite to the groove (16) of the post (3) at different distances from a foot of the holder (4),with which the holder (4) is slidably arranged and fixed against displacement on the mounting rail (2), and that the holder (4) has constrictions (24) as predetermined separation points on the sides of the heads (23) facing the post (3). Railing system according to claim 1, characterized in that the fastening rail (2) has a profile rail. Railing system according to claim 1 or 2, characterized in that the fastening rail (2) has a T-slot (7) extending in its longitudinal direction, on which the holder (4) is arranged to be displaceable in the longitudinal direction of the fastening rail (2) and to be fixed against displacement. Railing system according to one or more of the preceding claims, characterized in that the fastening rail (2) has a support (10) extending in its longitudinal direction for the holder (4). Railing system according to claim 1, characterized in that the groove (16) of the post (3) forming the receptacle for the head (23) of the holder (4) has a channel-shaped recess (17) extending in the longitudinal direction of the post (3) at a groove base and / or that the holder (4) is not wider at the predetermined separation points than the recess (17) at the groove base of the groove (16) of the post (3) such that, after one or more heads (23) of the holder (4) have been cut off at a predetermined separation point, a projection extending towards the post (3) from a head (23) remaining on the holder extends as a remnant of the constriction (24) into the recess (17) at the groove base of the groove (16) of the post (3). Railing system according to one or more of the preceding claims, characterized in that the post (3) has a channel (18) extending in its longitudinal direction in which an abutment (25) is arranged which has a threaded hole (26), wherein the post (3) is connected to the holder (4) by means of a threaded element screwed into the threaded hole (26) of the abutment (25). Railing system according to one or more of the preceding claims, characterized in that the post (3) has a higher bending stiffness perpendicular to a longitudinal median plane parallel to the longitudinal direction of the fastening rail (2) through the post (3) than parallel to the longitudinal median plane. Railing system according to one or more of the preceding claims, characterized in that the post (3) has a snap-on cover strip (19) extending in the longitudinal direction of the post (3) on a side of the post (3) facing the holder (4). Railing system according to one or more of the preceding claims, characterized in that the railing system (1) has a handrail (5) which is detachably arranged at an upper end of the post (3) far from the holder (4). Railing system according to claim 9, characterized in that the handrail (5) has a T-slot (29) extending in its longitudinal direction in which a T-slot nut (31) is arranged by means of which the handrail (5) is connected to the post (3). Railing system according to claim 10, characterized in that the handrail (5) has a back-rotation device (34) for the T-slot nut (31), which prevents the T-slot nut (31) from rotating backwards from a position engaging behind the T-slot (29) of the handrail (5) into a position aligned in a longitudinal direction of the T-slot (29), in which the T-slot nut (31) does not engage behind the T-slot (29). Railing system according to one or more of claims 9 to 11, characterized in that the handrail (5) has a tubular profile with the T-slot (29) extending in its longitudinal direction and / or a channel extending in its longitudinal direction, into which a connector (36, 37, 38) is inserted to connect the tubular profile with a further tubular profile to extend the handrail (5) or to angle the handrail (5). Balcony with a railing system according to one or more of the preceding claims, characterized in that the holder (4) is attached to the balcony slab (13), terrace, building or structure through the fastening rail (2).

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