WO2020083821A1

WO2020083821A1 - Scaffolding post connection rosette with hollw embossments of reduced nominal thickness, and scaffolding subassembly

Info

Publication number: WO2020083821A1
Application number: PCT/EP2019/078534
Authority: WO
Inventors: Erzad MIKIC
Original assignee: Peri Gmbh
Priority date: 2018-10-22
Filing date: 2019-10-21
Publication date: 2020-04-30
Also published as: EP3870779A1; US20220010569A1; CN113508210A; DE102018218060A1

Abstract

The invention relates to a connection rosette (10) for a scaffolding post (14), comprising multiple passage cutouts (16, 18) for coupling parts of scaffolding components (42) to be connected detachably to the connecting rosette to reach through, which scaffolding components are arranged at a distance from one another in the circumferential direction of the connection rosette (10). The connection rosette has an upper and a lower side face (12a, 12b ), which are plane-parallel and define a nominal thickness D_N of the connection rosette.. The connection rosette is provided with multiple hollow embossments (24) with elevations (26) formed on only one of the two side faces (12) and depressions (28) formed correspondingly on the respective other side face (12a, 12b). The hollow embossments (24) are each arranged at a distance from the passage cut-outs (16, 18) on a radial segment (30) of the connection rosette (10) which extends in the radial direction from the inner edge (32) as far as the outer edge (22) of the connection rosette (10) and is delimited by the respective one of the passage cut-outs (16, 18) on both sides. The invention further relates to a scaffolding subassembly (100).

Description

Scaffold connection rosette with hollow embossing at reduced

Nominal thickness and scaffold assembly

The invention relates to a connection rosette for scaffold posts, such as those used in system scaffolds as nodes for coupling further system components, and to a scaffold assembly.

Scaffolding is used in the construction sector as a working platform, for fastening concrete formwork or as a protective device. System scaffolds, which include the so-called frame and module scaffolds, are made up of scaffolding components from a scaffolding system - usually a manufacturer-specific one. The system scaffolds have scaffold posts to be arranged vertically (vertically), which are provided with numerous connection or node points at which other system scaffold components, for example horizontal bars, diagonals and (Scaffold) brackets, attached and the scaffold posts can be connected to each other. The nodes are usually formed by a perforated disc called a connection rosette. In view of the required load capacity, the connection rosettes mostly consist of metal and are welded to the scaffold arm or attached in some other way. The cumulative mass of the connecting rosettes of a scaffold stem is a considerable disadvantage from the point of view of cost during manufacture and transport and also with regard to the manageability of the scaffold stems.

It is therefore the object of the invention to provide a connection rosette which can be manufactured overall using less material and at lower cost. In addition, a scaffolding assembly with a scaffolding assembly is to be specified.

The problem relating to the connection rosette is achieved by a connection rosette with the features specified in claim 1. The scaffolding assembly according to the invention is specified in claim 11. Preferred developments of the invention are the subject of the description and the subclaims.

The perforated disc or connection rosette according to the invention is provided for mounting on a scaffold post and is used to connect at least one further (system) scaffold component, for example a horizontal bolt, a so-called diagonal, in particular vertical diagonal, a console or other manufacturer-specific scaffold components.

The passage recesses of the connection rosette enable the coupling parts of scaffold components to be detachably connected to the connection rosette, which are arranged at a distance from one another in the circumferential direction of the connection rosette. According to the invention, the connection rosette has an upper and a lower side surface, which are plane-parallel. The connection rosette is provided with a plurality of hollow embossings with (hollow embossing) elevations formed on only one of the two side surfaces and corresponding (hollow embossing) depressions in the respective other side surface. The hollow embossments are each arranged on a radial segment of the connection rosette, which extends in the radial direction from the inner edge to the Extends the outer edge of the connection rosette and through which one of the through recesses is delimited on both sides, and the hollow embossments are arranged at a distance from the through recesses. Due to the hole embossing, the connection rosette only has a functional thickness at defined points, which is greater than the nominal thickness of the connection rosette, ie the disk thickness of the connection rosette. As a result, the connection rosette can be made thinner overall, ie with a smaller nominal thickness, than was previously possible, while the load-bearing capacity remains sufficient. The associated reduction in mass of the connection rosette offers manufacturing advantages as well as cost advantages. Due to the local functional thickening or increase in height of the connection rosette achieved with the hollow embossings, a defined support surface can be realized for a scaffold component to be connected to the connection rosette. This ensures a secure and play-free or essentially play-free fit of the scaffold component on the connection rosette. On the other hand, this can reliably counteract an undesirable incorrect or local overloading of the connection rosette.

In addition, existing scaffolding components that are designed for attachment to connection rosettes with a larger uniform nominal thickness can be easily connected to the connection rosette according to the invention without these having excessive play or being able to tilt.

In the present case, the nominal material thickness is the uniform material thickness of the connection rosette, which the connection rosette has in the areas without hollow stamping.

Due to the plane-parallel upper and lower side surfaces, the connection rosette can be cut or punched out inexpensively from a blank plate. All hollow embossings can be introduced into the material of the connection rosette at any time or as part of a follow-up composite process without any significant technical effort. As a result, the connection rosette can be provided inexpensively in mass production. The hollow embossings are all spaced apart from the passage recesses and are each arranged on a radial segment of the connection rosette, which extends in the radial direction from the The inner edge extends to the outer edge of the connection rosette and through which one of the opening recesses is delimited on both sides. The hollow embossments are thus completely encompassed by the flat side surfaces of the connection rosette. As a result, the surveys can be implemented as functional contact surfaces for the scaffolding components to be connected to the connection rosette with a particularly large load-bearing capacity. This can counteract undesired shearing of the elevations or undesired deformation of the elevations in the often harsh operating conditions during transport and operational use. According to the invention, each of the aforementioned rosette segments has only one hollow embossing. On the one hand, this can avoid excessive structural weakening of the connection rosette.

The elevations of the connection rosette defined by the hollow embossments serve as support surfaces for the scaffolding components to be connected to the connection rosette. For their simplified installation, the elevations preferably have a rounded shape rather than a sharp-edged shape. This can reliably counteract undesired tilting of the scaffolding components to be connected or decoupled from the connection rosette. This is also advantageous from an occupational safety point of view. According to a preferred embodiment of the invention, all hollow embossments are arranged uniformly spaced from the central axis of the connection rosette. As a result, an advantageous axially symmetrical loading of the connection rosette can be achieved at the support points formed by the elevations. According to the invention, the elevations can all agree with one another in terms of their shape and / or their dimensions. On the one hand, this offers manufacturing advantages. On the other hand, handling errors can be avoided.

All elevations of the hollow embossments particularly preferably have a circular cross-sectional shape. This cross-sectional shape enables a special load-stable execution of the surveys and at the same time only a small one

Material weakening of the connection rosette.

The elevations preferably have a height h which corresponds to a maximum of half the nominal thickness DN of the connection rosette. As a result, the functional thickness of the connection rosette can be increased to at least 1.5 times the nominal thickness of the connection rosette.

The passage recesses can in principle have a uniform shape and size or, at least in part, differ from one another in terms of their shape and size for the possible connection of different scaffolding components. So the connection rosette can be first and second

Have passage recesses, the first passage recesses being larger than the second passage recesses and in

Contrary to the second passage recesses are designed to be open towards a central recess of the connection rosette. The first passage recesses are especially for the connection of

Suitable for horizontal locking. The smaller second passage recesses are particularly suitable for coupling diagonals, for example vertical diagonals. The second passage recesses can in particular have a circular shape. The scaffold assembly according to the invention comprises a scaffold arm with a connection rosette explained above and a scaffold component which is detachably attached or coupled to the connection rosette. The scaffold component has either one or more positioning pins, wherein according to a first alternative embodiment each positioning pin engages in a recess in a hollow embossing of the connection rosette.

According to a second alternative embodiment, the scaffold component (in its state mounted on the connection rosette) is laterally limited in its pivotability relative to the connection rosette by at least one of the elevations of the connection rosette. Such a rotating or swiveling stop can be used to pry the lever off into one of the through recesses or via one of the recesses Passage recesses unplugged connection head of the scaffold component can be avoided from the scaffold component. This is advantageous for the longevity of the scaffolding component and the connection rosette.

The scaffold component can be designed as a diagonal, preferably a vertical diagonal, which has a fork head at one end with a receiving gap for connection rosettes with a nominal thickness that is greater than the nominal thickness of the connection rosette, and which, in its detachably mounted state on the connection rosette, has the connection rosette on both sides in overlaps in the axial direction and is secured to the connection rosette by means of a locking or securing element which passes through one of the through recesses of the connection rosette.

The scaffold component can alternatively be a horizontal bar which has a coupling hook at one end, which engages in one of the passage recesses of the connection rosette. A safety wedge or the like can be assigned to the coupling hook. According to the invention, each positioning pin of the locking head can be dimensioned in length in such a way that it can transmit normal forces from the horizontal locking bar to the connection rosette. In other words, each positioning pin of the locking head can be made longer than the recess of the corresponding hollow embossing of the connection rosette is deep.

Further advantages of the invention result from the description and the drawing. The embodiments shown and described are not to be understood as an exhaustive list, but rather have an exemplary character for the description of the invention.

The drawing shows:

Fig. 1 is a connection rosette with four first passage recesses and four second passage recesses, which are arranged alternately in the circumferential direction of the connection rosette and with hollow embossments for local thickening of the connection rosette for a connection of scaffold components that is as free of play as possible, in one

Top view; FIG. 2 shows the connection rosette from FIG. 1 in a perspective view;

3 shows the connection rosette according to FIG. 1 in a perspective view showing the elevations of the hollow embossments arranged on the underside;

4 shows the connection rosette according to FIG. 1 in a side view; Fig. 5 shows a further connection rosette with hollow embossments, in the sense of

3A rosette is executed and has three first and two second passage recesses for the connection of different scaffolding components, in a perspective view Fig. 6, a further connection rosette with hollow embossing and five first

Through-recesses and only two second through-recesses, in a perspective view;

7 shows a further connection rosette with hollow embossings and only six first passage recesses, in a perspective view on the upper side thereof;

8 shows the connection rosette according to FIG. 7 in a perspective view on the underside thereof;

Fig. 9 shows a first scaffolding assembly with a scaffold arm that with a

1 connection rosette is provided and with a fork head connected to the connection rosette of a scaffold component designed as a vertical diagonal, in a partial perspective view;

10 shows the scaffolding assembly according to FIG. 9 in a different perspective

View; FIG. 11 shows a detailed section of the scaffolding assembly according to FIG. 10, with the positioning pin engaging in the recess of a hollow embossing;

FIG. 12 shows the scaffolding assembly according to FIG. 10, in a side view;

13 the fork head of the scaffolding component of the scaffolding assembly according to FIG.

12 in an end view; and

Fig. 14 shows a second scaffolding assembly with a scaffold arm that with a

1 and with a locking head connected to the locking rosette of a scaffold component designed as a horizontal locking bar, in a sectional view.

In Figs. 1 to 4 shows a perforated disc or connection rosette 10 for a scaffold arm, as is used in so-called modular scaffolds. The connection rosette 10 can be welded to the scaffold stem to be provided with it, or can be attached to the scaffold stem in another suitable manner. The connection rosette 10 is here closed in a ring shape and comprises an upper side surface 12a and a lower side surface which is not visible in FIG. 1 for reasons of illustration and which are designed to be plane-parallel to one another. A central recess 14 here (= scaffold arm recess) serves to receive the scaffold arm (not shown). The connection rosette 10 comprises various connection positions A for further scaffolding components. Each connection position A comprises a first passage recess 16 or a second passage recess 18. The passage recesses 16, 18 are arranged spaced apart from one another in the circumferential direction of the connection rosette 10. The first and second passage recesses 16, 18 can be arranged alternately on the connection rosette 10 in the circumferential direction according to FIG. 1. The first passage recesses 16 are larger than the second passage recesses 18 and are each open to the central recess 14 of the connection rosette 10. The first passage recesses 16 serve primarily for the detachable connection of scaffolding components in the form of horizontal bars. Such scaffolding components generally have coupling parts in the form of hooks, in particular with a safety wedge, which can be hooked into the first passage recesses 16. The second passage recesses 18 are each circular here and serve to connect scaffolding components in the form of diagonals, in particular so-called vertical diagonals. A radially inward-facing indentation 20 of the outer edge 22 of the connection rosette 10 can be assigned to the second passage recesses 18. These scaffolding components are generally secured or unplugged to the connection rosette 10 using a securing bolt.

The connection rosette 10 has a small nominal thickness, so that it can be provided with less material and with a reduced mass. Existing scaffolding components from manufacturer-specific scaffolding systems available on the market are designed for connection to connection rosettes with a significantly larger nominal thickness in comparison. However, the connection rosette 10 is compatible with such scaffold components, ie, regardless of its smaller nominal thickness, such scaffold components allow an essentially play-free fit on the connection rosette 10. For this purpose, the connection rosette 10 is provided with several individual hollow embossments 24. The hollow embossments 24 have elevations 26, all of which are formed on only one of the two side surfaces 12 of the connection rosette 10 (FIGS. 3 and 4). The depressions 28 of the hollow embossments 24, which correspond to the elevations 26 and are formed on the respective other, here the upper side surface 12a, as can be clearly seen in FIG. 2. The hollow embossments 24 are each spaced apart from the through recesses 16, 18 on a radial segment 30 of the connection rosette 10, which extends in a (strictly) radial direction from the inner circumference or inner edge 32 of the connection rosette 10 to its outer edge 22. A radial segment 30 is therefore one Segment of the connection rosette that is laterally limited on both sides in the circumferential direction by a local radius in relation to the central axis Z of the connection rosette 10. One of the through recesses 16, 18 of the connection rosette 10 is delimited on both sides in the circumferential direction by each of the radial segments 30. Each of these radial segments 30 preferably has only one hollow embossment 24. An unnecessary weakening of material of the connection rosette 10 by the hollow embossments 24 can thereby be avoided. In addition, hollow embossments are no longer required functionally. 1, all the hollow embossments 24 of the connection rosette 10 are arranged at a uniform distance from the central axis Z of the connection rosette 10. The hollow embossments 24 are thus all arranged on a circular line 34 around the central axis Z of the connection rosette 10. The second passage recesses 18 are arranged completely in the radial direction within the circular line 34. According to the perspective view of the connection rosette 10 shown in FIG. 3, the elevations 26 of all the hollow embossments 24 have a circular cross-sectional shape. Due to the all-round connection of the elevations to the remaining connection rosette, these are reliably secured against unwanted shearing off or tearing off.

4, the two plane-parallel side surfaces 12a, 12b are the

Connection rosette 10 clearly visible. The two side surfaces 12a, 12b define the nominal thickness DN of the connection rosette 10, which in each case is less than 7.1 millimeters, in particular approximately 6 millimeters. Each elevation 26 of the hollow embossments 24 has a height h, which preferably corresponds to a maximum of half the nominal thickness DN of the connection rosette 10. The elevations 26 of the hollow embossments 24 all have a uniform outer diameter 36. The height of the nominal thickness DN and the height h of the elevations 26 together form a functional thickness DF of the connection rosette 10.

The connection rosette 10 does not have to have full connection options for scaffolding components. According to FIG. 5, the connection rosette 10 can also be connected only via an arc segment 38 of less than 360 ° Enable scaffolding components. In this case, too, the connection rosette 10 is preferably designed to be closed in a ring, in order to thereby ensure, on the one hand, reliable attachment of the connection rosette 10 to a scaffold stem and, at the same time, a large load-bearing capacity of the connection rosette 10. Here too, the hollow embossments 24 are arranged in a ring on a circular line (cf. FIG. 1) around the axis Z and the recess 14.

The embodiment of the connection rosette 10 shown in FIG. 6 has a total of five first and two second passage recesses 16, 18 for the connection of further scaffolding components. This type of connection rosette 10 allows the connection of scaffolding components at a relative connection angle a with a <90 °, here with a = 60 °, and under a further, smaller relative connection angle ß with β <60 °, here about 30 °. FIG. 7 shows a further connection rosette 10 with hollow embossments 24, which exclusively has first passage recesses 16 for the connection of scaffolding components in the form of bolts. The connection rosette 10 comprises a total of 6 such first passage recesses 16, which are arranged at a regular distance from one another around the central axis Z.

The in Figs. 6 and 7 connection rosettes 10 allow in addition to a classic right-angled connection of scaffolding stems, d. H. an orthogonal floor plan of the scaffolding, a different polygonal scaffolding, through which the scaffolding can be easily adapted to curved floor plans of buildings, etc. Via the connection rosette shown in FIG. 6, two diagonals can be connected in order to couple a scaffold post provided with the connection rosette 10 to another scaffold post or to mechanically attach it to a building wall or the like.

9 and 10, a scaffold assembly 100 is shown with a diagonal connection. The scaffold assembly comprises a scaffold arm 40 with a connection rosette 10 according to FIG. 1 and with only one part shown schematically with dashed line scaffold component 42 which is releasably attached to the connection rosette 10. The scaffold post 40 is designed in a manner known per se as a hollow profile and has a circular cross-sectional shape. It is understood that the scaffold post 40 can also have a different cross-sectional shape. The scaffold stem 40 extends through the central recess 14 of the connection rosette 10. The longitudinal axis L of the scaffold stem 40 and the central axis Z of the connection rosette 10 coincide. The connection rosette 10 is welded to the frame stem 40, but can also be attached to the frame stem 40 in another suitable manner. It should be noted that the side surface 12a of the connection rosette 10 provided with the depressions 28 of the hollow embossments 24 faces upward (in the perpendicular direction), while the side surface 12b of the connection rosette 10 provided with the elevations 26 points downwards. This simplifies the assembly of scaffolding components on and the dismantling of scaffolding components from the connection rosette 10. In addition, the load on the elevations 26 of the hollow embossments 24 is significantly smaller in this assembly than if they were to point vertically upward from the connecting rosette 10.

9, the scaffold component 42 is designed as a vertical diagonal with a hollow profile 44 and a fork head 46 fastened to the hollow profile 44. The fork head 46 is arranged in its predetermined mounting position on the connection rosette 10 of the scaffold stem 40. The fork head 46 comprises an upper and a lower claw 48a, 48b, between which a receiving gap 50 for the connection rosette 10 is formed. In the assembly position of the scaffold component 42 shown, its fork head 46 overlaps the connection rosette 10 on both sides in the axial direction. The connection rosette 10 is thus arranged in sections in the receiving gap 50 of the clevis 46. Both claws 48a, 48b of the clevis 46 have contact surfaces 52 for the scaffold post 40 at their free end. The contact surfaces 52 preferably have a radius of curvature which corresponds to the radius of the scaffold post 40 (not designated in the drawing) in order to provide the largest possible support of the fork head 44 on the scaffold post 44 in the radial direction. 10, the hollow profile 44 of the scaffold component 42 is not shown for reasons of illustration. It should be noted that in Figs. 9 and 10, a securing bolt which passes through the clevis 46 and one of the second passage recesses 18 of the connection rosette 10 in order to secure the scaffolding component 42 in its assembly position on the connection rosette 10, is not shown.

In the embodiment shown, the fork head 46 has two positioning pins 54 on its upper claw 48a. These positioning pins 54 are each arranged laterally on the upper claw 48a of the fork head and can be welded to it, for example. The positioning pins 54 each engage in a recess 28 in one of the hollow embossments 24 of the connection rosette in the fork head 46 arranged in its predefined mounting position on the connection rosette 10. As a result, the fork head 46 of the scaffold component 42 can be positioned on the one hand in a simplified manner in its predetermined mounting position on the connection rosette 10. In addition, the engagement of the positioning pins 54 in the depressions of the hollow embossments 24 enables a play-free or substantially play-free seat of the fork head 46 in a direction parallel to the upper side surface 12a of the connection rosette 10. It should be noted that the positioning pins are in any case shorter than the depressions 28 of the hollow embossments 24 of the connection rosette 10, so that they are not subjected to pressure in the axial direction.

FIG. 11 shows the coupling point of the clevis 46 on the connection rosette 10 from FIG. 10. The positioning pins 54 can be partially embedded in the material of the fork head.

FIG. 12 shows the scaffolding assembly 100 with a diagonal connection according to FIG. 10 in a side view. With its lower claw 48b, the fork head 46 engages over two of the elevations 26 of the hollow embossments 24 of the connection rosette 10 in an axial direction. These elevations 26 protrude from the connection rosette 10 in the axial direction onto the lower claw 48b of the fork head 46. The functional thickness DF of the connection rosette 10 is only slightly smaller than the gap width b of the receiving gap 50. As a result, the fork head 46 is in its predetermined Mounting position arranged on the connection rosette 10 held with only a small axial play. The axial play S of the fork head 46 of the scaffold component 42 mounted on the connection rosette relative to the connection rosette 10 corresponds to the difference between the gap width b and the functional thickness DF of the connection rosette 10, cf. Fig. 4. The depth of engagement of the positioning pins 54 in the recesses 28 of the respective hollow embossments 24 of the connection rosette 10 is chosen to be (minimally) smaller than the axial play S, in order to be able to mount and dismantle the fork head 46 on the connection rosette 10 in a simple manner . A locking or securing element 56 shown in dotted line in FIG. 12 serves to secure the fork head 10 in its predetermined mounting position on the connection rosette 10. The securing element 56 is designed here as a locking pin and extends through the fork head 46 and one of the second passage recesses 18 in FIG Connection rosette 10. The securing element 56 absorbs normal forces and shear forces of the scaffolding component 42 acting on the connection rosette 10. Unwanted shearing or deformation of the positioning pins 54 of the clevis 46 can thereby be reliably counteracted.

13 shows the fork head 46 of the scaffold component 42 of the scaffold assembly 100 with a diagonal connection in an end view. The fork head 46 comprises the upper and lower claws 48a, 48b, between which the receiving gap 50 for the connection rosette 10 is formed. Both claws 48a, 48b of the fork head 46 have at their free end the contact surfaces 52 for the scaffold arm. In the embodiment shown, the fork head 46 has two positioning pins 54 on its upper claw 48a. These positioning pins 54 are each arranged laterally on the upper claw 48a of the fork head 46 and can be welded to it, for example. The positioning pins 54 engage in the space of the receiving gap 50 or in some areas reduce the gap width b of the receiving gap 50.

14 shows a further scaffolding assembly 100 with a latch connection. The scaffold assembly 100 comprises a scaffold stem 40, a connection rosette 10 arranged on the scaffold stem 40 and a detachable on the connection rosette 10 attached scaffold component 42, which is designed in the form of a horizontal bar. The scaffold component, ie the horizontal bolt, has a bolt head 58 with a coupling hook 60 which, in the mounting state of the horizontal bolt shown on the connection rosette 10, engages in a first through recess 16 of the connection rosette 10 (see FIG. 1).

The locking head 58 rests on the connection rosette 10 and can be supported on the scaffolding stem 40 by means of contact surfaces 52 which assign the scaffolding stem 40 in the radial direction. A securing wedge 62 can be used to secure the scaffolding component 42 in its assembly position hooked onto the connection rosette 10. The locking head 58 has at least one positioning pin 54 which, together with the locking head 58 as a forged part, can be made in one piece with one another. Alternatively, the at least one positioning pin 54 can be welded to the locking head 58. Each positioning pin 54 of the locking head 58 is preferably arranged laterally on the locking head 58. In the predetermined mounting position of the horizontal bar on the connection rosette 10, the at least one positioning pin 54 engages in a recess 28 in one of the hollow embossments 24 of the connection rosette 10. As a result, the locking head 58 of the scaffold component 42 can be precisely positioned in a simple manner in its predetermined assembly position at a connection position A of the connection rosette 10 provided for the connection of the horizontal bolt and at the same time aligned relative to the connection rosette 10 in the specified manner. In addition, the engagement of each positioning pin 54 of the horizontal bar in the recess 28 of a hollow embossment 24 of the connection rosette 10 enables a play-free or substantially play-free seat of the locking head 60 in a direction parallel to the upper side surface 12a of the connection rosette 10. Thus, each positioning pin 54 of the horizontal bolt can also transmit thrust forces, ie forces in a direction parallel to the upper side surface 12 a of the connection rosette 10. It should be noted that each positioning pin 54 of the scaffold component 42 designed as a horizontal bar can have a length I that is less than the depth of the depression 28 of the relevant hollow embossment 24 of the connection rosette 10, or also the same size or greater than the depth mentioned. This allows the Positioning pin 54 are also subjected to pressure in an axial direction to the longitudinal axis L of the scaffold post.

5

Claims

1. Connection rosette (10) for a scaffold stem (40), comprising:

- A plurality of passage recesses (16, 18) for the passage of coupling parts of scaffold components (42) which can be detachably connected to the connection rosette (10) and which are arranged at a distance from one another in the circumferential direction of the connection rosette (10);

- An upper and a lower side surface (12a, 12b), which are designed plane-parallel and define a nominal thickness DN of the connection rosette 10;

- Several hollow embossments (24) with only one of the two side surfaces

(12a, 12b) formed elevations (26) and correspondingly formed depressions (28) on the respective other side surface (12a, 12b),

- The hollow embossments (24) from the through recesses (16,

18) are each spaced apart on a radial segment (30) of the connection rosette (10) which extends in the radial direction from the inner edge (32) to the outer edge (22) of the connection rosette (10) and through which one of the through recesses (16 , 18) is limited.

2. Connection rosette (10) according to one of the preceding claims, characterized in that each radial segment (30) has only one hollow embossing (24).

3. Connection rosette (10) according to claim 1 or 2, characterized in that all hollow embossments (24) are arranged uniformly spaced from the central axis Z of the connection rosette (10).

4. Connection rosette (10) according to one of the preceding claims, characterized in that the elevations (26) of the hollow embossments (24) each have a circular cross-sectional shape.

5. Connection rosette (10) according to one of the preceding claims, characterized in that each elevation (26) of the hollow embossments (24) have a uniform height h, the height h preferably corresponding to a maximum of half the nominal thickness DN of the connection rosette (10).

6. Connection rosette (10) according to any one of the preceding claims, characterized in that the elevations (26) of the hollow embossments (24) correspond to one another in their shape and / or in their dimensions.

7. Connection rosette (10) according to one of the preceding claims, characterized in that the connection rosette (10) has a nominal thickness DN of less than 7.1 millimeters, in particular of approximately 6 millimeters.

8. Connection rosette (10) according to one of the preceding claims, characterized in that the passage recesses (16, 18) of the connection rosette (10) have a uniform shape and size.

9. connection rosette (10) according to any one of the preceding claims 1 to

7, characterized in that the connection rosette (10) has first and second passage recesses (16, 18), the first passage recesses (16) being larger than the second passage recesses (18) and, in contrast to the second passage recesses (18), one central recess (14) of the connection rosette are designed to be open.

10. Connection rosette (10) according to claim 9, characterized in that the second passage recesses (18) in the radial direction completely within one of the hollow embossments (24) intersecting

Circular line (34) are arranged.

11. scaffolding assembly (100) comprising a scaffold arm (40) with at least one connection rosette (10) according to one of the preceding claims and a scaffolding component (42) which is detachably attached to the connection rosette (10), the scaffolding component (42) a ) has one or more positioning pins (54) and each positioning pin (54) engages in a recess (28) in one of the hollow embossments (24) of the connection rosette (10); or

b) the pivotability relative to the connecting rosette (10) is limited laterally by at least one of the elevations (26) of a hollow embossment (24).

12. Scaffolding assembly (100) according to claim 11, characterized in that the scaffolding component (42) is designed as a diagonal, preferably vertical diagonal, which has at one end a fork head (46) with a receiving gap (50) for the connection rosette (10), whose width b is greater than the functional thickness DF of the connection rosette (10), the clevis (46) of the connection rosette (10) in its detachably mounted state on the connection rosette (10) engaging on both sides in the axial direction and via a securing element (56) , which passes through the fork head (46) and one of the passage recesses (16, 18) of the connection rosette (10), is secured to the connection rosette (10).

13. scaffolding assembly according to claim 11, characterized in that the

Scaffold component (42) is designed as a horizontal bolt, which has at one end a bolt head (58) with a coupling hook (60) which engages in one of the through recesses (16, 18) of the connection rosette (10).

14. Scaffolding assembly according to claim 13, characterized in that each positioning pin (54) of the locking head (58) is dimensioned in its length such that it is in the direction of its longitudinal extent Can transmit normal forces from the horizontal bar to the connection rosette (10).

15. Use of a connection rosette (10) for a scaffold arm (40) according to one of claims 1 to 10 in a scaffold assembly.