AT525700A2 - Connection arrangement and profile connection arrangement - Google Patents

Abstract

The invention relates to a connection arrangement comprising: a base plate (3) with at least one non-round through opening (4, 4'); a fastening element (5, 5') which has a shank section (8, 8') with a shank axis (A8, A8'), an anti-rotation section (7, 7') with a non-round profile and a clamping section (6, 6'). wherein the shank section (8, 8') extends through the through opening (4, 4') and is secured at one shank end by means of a clamping nut (10, 10'); a spring element (9, 9'), which is supported between the base plate (3) and the clamping nut (10, 10') and resiliently prestresses the clamping section (6, 6') in the direction of the base plate (3), the fastening element (5 , 5') engages in a first rotational position (P1, P1') with the anti-rotation section (7, 7') in the non-circular passage opening (4, 4') in a rotationally fixed manner; wherein a spring deflection (S9, S9') of the spring element (9, 9') is greater than the thickness (H3) of the base plate (3). The invention also relates to a profile connection arrangement (23) with such a connection arrangement (2).

Description

Sanitary Engineering.

A preassembled fastening unit for connecting a profile element to an object, for example one or more similar profile elements, is known from EP 1 039 153 A1. The unit has a sheet metal body that defines one or more contact surfaces, each for the top of a profile element to be connected. The profile element is provided with a continuous opening for a bolt unit on each contact surface. An elongated metal nut of the bolt unit is inserted into recesses in the sheet metal body on the side of the contact surface with cams. As a result, the nut remains in its pre-assembly position. A plastic spring element presses

the bolt head away from the sheet metal body.

EP 0 598 281 A1 discloses a connection arrangement for assembly components for front-of-wall assembly of sanitary components. The connection arrangement comprises a fastening element for connecting a C-profile to a secondary component, on which the actuating element is supported with an abutment surface. The actuating element is non-rotatably connected to a shaft for the rotational adjustment of the clamping body. Each clamping surface is adjoined by a clamping surface that is inclined to the longitudinal axis of the shaft and rises in the rotational adjustment direction toward the adjacent gripping surface. The rotational adjustment of the clamping surface takes place counter to one acting in the longitudinal direction of the shank

spring return force.

DE 20 2012 007 790 U1 discloses a fastening system for fastening two profile bars by means of a fastening body. The fastening body is secured by means of hammer head screws,

engage the grooves of the profile bars, and screw nuts on the

DE 78 25 830 U1 discloses a device for attaching a retaining nut in a retaining rail made from a hollow profile. The retaining nut has a web portion and a protruding portion

Socket part with internal thread.

The present invention is based on the object of proposing a connection arrangement for connecting profile elements which is easy to handle and in particular enables tool-free and reliable pre-assembly. The object is also a profile assembly with such a connector and a simple method for mounting a

to propose such a profile arrangement.

The object is achieved by a connection arrangement for connecting profile elements, comprising: a base plate with at least one non-round through-opening; a fastener having a shank portion with a shank axis, an anti-rotation portion with an out-of-round profile, and a clamping portion, wherein the shank portion extends through the through hole and is secured at a shank end by a clamping nut; a spring element which is arranged between the base plate and the clamping nut and which resiliently biases the clamping section of the fastening element in the direction of the base plate; wherein the fastening element, in a first rotational position, engages in the non-circular through-opening in a rotationally fixed manner with the anti-rotation locking section; and wherein a spring deflection of the spring element is greater than the thickness of the base plate, so that by moving the clamping nut against the spring force of the spring element, the anti-rotation section of the fastening element is disengaged from the non-round

Through hole brought, and the fastener

One advantage is that the connection arrangement forms a preassembled structural unit whose individual parts can be captively connected to one another. The fastening element is prestressed against the base plate by means of the spring element and can be pre-assembled with a C-shaped profile by a simple pressing and rotating movement. Due to the non-circular through opening of the base plate and the anti-rotation section of the actuating element that interacts with it, the latter can be transferred to defined rotational positions, for example a first rotational position in which the clamping section extends longitudinally to the C-profile and can be inserted into it, and a second rotational position, in which the clamping section is aligned transversely to the C-profile and is prestressed against the legs of the C-profile. The non-circular through-opening of the base plate can in particular have a contour which enables the anti-rotation section to engage in a first rotational position and a second rotational position rotated by 90° relative to this. For this purpose, the passage opening can, for example, be a square opening and the anti-rotation section can accordingly be a square profile

have, although other contours are possible.

According to a preferred embodiment, the shank section has a marking on its front side, which indicates the rotational orientation of the clamping section. This can in particular be an optical and/or haptic marking. The marking allows the fitter to easily identify during assembly whether the actuating element is in the desired prestressed position, or when dismantling whether the actuating element is in the release position

located and can be removed from the C-profile.

reliable connection guaranteed.

In principle, the spring element can be designed as required, taking into account the thickness of the base plate. The spring element preferably has a spring deflection of at least 3 mm and/or at most 8 mm. According to a preferred embodiment, the spring element has a first disk section which is axially supported against the clamping nut and a second disk section which is axially supported against the base plate, and spring arm sections extending between the first disk section and the second disk section. The disc sections are preferably arranged coaxially with one another. The spring arm sections can extend helically or in an arc around the spring axis between the two disc sections. An average diameter of the first disk section can be smaller than an average diameter of the second disk section. This achieves an axially compact design or a greater spring stroke, since the disk sections can engage in one another when the spring is pressurized. A mean diameter can denote a diameter between a smallest and a largest diameter of the respective disk. A smallest outside diameter of the first disc section can be larger than a largest outside diameter of the clamping screw. Through this

the clamping screw is well axially supported.

arranged.

The spring element can be produced as a stamped and bent part from spring steel. Alternatively, production from plastic, in particular as an injection molded part, is also possible. A spring element made of spring steel can have a material thickness of 0.3 mm to 0.8 mm when viewed from the side. In this case, the spring element can fulfill two functions in the configuration with two disk sections and spring sections, namely a disk function for supporting the clamping nut and the spring function. In the fully clamped state, the clamping nut can be supported against the base plate via the disk section. A spring element made of plastic can have a material thickness of 0.5 mm to 2.5 mm. If plastic is used, the spring element is preferably designed in such a way that the contact surface of the clamping nut comes into direct contact with the base plate in the fully clamped state. That is, in the braced state, the ring section of the spring element is outside of the power flow. In this configuration, the spring element preferably has a circumferential collar which surrounds an edge section of the clamping nut

to spring-load them away from the base plate.

The base plate can have one, two or more non-round through-openings for receiving a respective fastening element. A connection arrangement for fastening two C-profiles to one another preferably has two through-openings which are arranged next to one another. According to a preferred embodiment, the base plate

their side facing the clamping section one or more

can be produced by means of a forming operation.

A fastening element consisting of clamping, anti-rotation and shank sections is preferably produced in one piece.

This results in high strength.

The object is further achieved by a profile connection arrangement comprising: a C-shaped profile element which is connected to a further structural element by means of a connection arrangement according to one of the above-mentioned embodiments; wherein the C-shaped profile element has a longitudinal slot formed between two web sections, the width of which is dimensioned in relation to the clamping section of the fastening element such that the clamping section can be inserted into the longitudinal slot in the first rotational position and projects beyond the longitudinal slot transversely to the profile axis in the second rotational position and supported against the web sections

is.

The other component can also be a C

act shaped profile or other structural element.

The object is further achieved by a method for assembling such a profile connection arrangement with the steps: inserting the clamping section of the fastening element into the longitudinal slot of the C-shaped profile element; Applying force to the clamping nut or the fastener against the biasing force of the spring element, so that the

Anti-rotation portion of fastener disengaged

7725

Profile element is tightly clamped.

Preferred embodiments are described below with reference to FIG

Drawing figures explained. Show in it:

FIG. 1A shows a connection arrangement according to the invention in a perspective representation obliquely from above;

FIG. 1B shows the connection arrangement from FIG. 1A in plan view;

FIG. 1C shows the connection arrangement from FIG. 1A in a first side view;

FIG. 1D shows the connection arrangement from FIG. 1A in a second side view;

FIG. 1E shows the connection arrangement from FIG. 1A in a perspective exploded view obliquely from above;

FIG. 1F shows the connection arrangement from FIG. 1A in a perspective exploded view obliquely from below;

FIG. 2A shows the spring element from FIG. 1 as a detail in a perspective representation obliquely from above;

FIG. 2B shows the spring element from FIG. 2A in plan view;

FIG. 2C shows the spring element from FIG. 2A in a first side view;

FIG. 2D shows the spring element from FIG. 2A in a second

side view;

FIG. 3B shows the profile arrangement from FIG. 3A in plan view;

FIG. 3C shows the profile arrangement from FIG. 3A in a first side view;

FIG. 3D shows the profile arrangement from FIG. 3A in a second side view;

FIG. 4A shows the profile arrangement from FIG. 3 with the connection arrangement inserted, in a perspective representation;

FIG. 4B shows the profile arrangement from FIG. 4A in plan view;

FIG. 4C shows the profile arrangement from FIG. 4A in a first side view;

FIG. 4D shows the profile arrangement from FIG. 4A in a second side view;

FIG. 5A shows the profile arrangement from FIG. 3 or 4 with a pretensioned connection arrangement in a perspective representation;

FIG. 5B shows the profile arrangement from FIG. 5A in plan view;

FIG. 5C shows the profile arrangement from FIG. 5A in a first side view; and

FIG. 5D shows the profile arrangement from FIG. 5A in a second

side view.

FIGS. 1A to 1F, also collectively referred to in abbreviated form as in FIG. 1, show a connection arrangement 2 according to the invention. Such connection arrangements 2 are used to connect a plurality of structural elements, for example profile rails. Supporting frames can be assembled from the profile rails, which are set, for example, in front of brick walls or in front of or in lightweight walls and for the installation of

Sanitary equipment, fittings and / or pipe parts can be used.

The connection arrangement 2 comprises a base plate 3 with two

the respective shaft section 8, 8' can be screwed on.

It can be seen that the connection arrangement comprises two fastening units (11, 11'), each with a fastening element, a spring and a clamping nut, with an arrangement with only one fastening unit also being conceivable. It goes without saying that the description of a fastening unit (11, 11°) is also representative of each

further applies.

The anti-rotation section 7 of the fastening element 5 has a non-circular cross-sectional profile, so that it is secured against rotation when it engages in the non-circular through-opening 4 . In the present case, the opening has a square profile, which applies correspondingly to the anti-rotation section 7, which has an opposite profile. The anti-rotation section 7 can engage in the profile opening with a slight play and is in this

used state with the base plate 3 rotatably connected.

In the present case, the clamping section 6 is designed approximately in the form of a hammer head, without being restricted to this. The clamping section 6 preferably has a flat clamping surface 12 on its side facing the base plate 3 . As can be seen in particular in FIGS. 5C and 5D, surface contact can be produced between the clamping section 6 and the legs 26, 26' of the C-shaped profile, which leads to a particularly secure connection. The length L6 of the clamping section 6 preferably corresponds approximately to the inside width of the profile rail, with a small amount of play should be provided in order to

Prevent bending of the profile rail when braced.

The base plate 3 optionally has a plurality of positioning elements 21, 21' on its side facing the profile rail, which can each engage in the longitudinal groove of the profile element to be connected in order to align the base plate 3 with respect to the profile element 24, 25 longitudinally or transversely thereto. In the present case, the positioning elements 21, 21' are in the form of through-positions by way of a forming operation

made without being limited thereto.

The shaft section 8 extends through the passage opening 4 and the spring element 9 . The clamping nut 10 is screwed onto the end of the shank against the prestressing force of the spring element 9, so that the fastening element 5 is secured against falling out. Overall, a captive, pre-assembled unit is formed, which allows a simple connection of two structural profiles. The clamping nut 10 is preferably designed as a self-locking nut, which enables the fastening element 5 to be rotated in the center into the pre-assembly position. When a larger torque is introduced, the nut is then screwed onto the shaft section 8 so that the fastening unit 11 is completely braced against the base plate 3 . The shank section 8 can optionally have a marking 22 on its end face, which indicates the rotational orientation of the clamping section 6 . The mark can be, for example, a visible and / or tactile slit parallel to the

Longitudinal extension of the clamping section 6 is aligned.

The spring element 9 is supported between a support surface 13 of the base plate 3 and a contact surface 14 of the clamping nut 10 and acts on the clamping section 6 in the direction of the base plate 3 or the anti-rotation section 7 in

the contoured through hole 4 into it. The suspension travel S9 of the

Spring element 9 is greater than the thickness H of the base plate 3, so that by axially pressing down the clamping nut 10 against the spring force of the spring element 9, the anti-rotation section 7 of the fastening element 5 is disengaged from the non-circular through-opening 4, and the fastening element 5 is disengaged from the base plate 3 can be twisted. For example, the spring deflection S9 can be at least 3 mm and/or at most 8 mm

be.

The spring element 9 is shown as a detail in Figures 2A to 2D. In particular, it comprises a first disk section 15, against which the clamping nut 10 is supported axially and which is acted upon axially to the base plate during clamping, a second disk section 16, which is supported axially on the base plate 3, and arc-shaped extensions between the two disk sections 15, 16 Spring arm sections 17, 17'. The disc sections 15, 16 can also be referred to as ring sections. As can be seen in particular in FIG. 2B, the two disc sections 15, 16 are arranged coaxially with one another, with the spring arm sections 17, 17' being arranged radially between the first and second disc sections 15, 16. The mean diameter D15 of the first disk section 15 is smaller than the mean diameter D16 of the second disk section 16. In the relaxed state of the spring, the spring arm sections 17, 17' each extend in a helical manner around the spring axis A9 between a radial projection 18 of the upper disk section 15 and a radial projection 19 of the lower disk section 19. The circumferential extent of the spring arm sections 17, 17' depends on their number and is preferably between 90° and 130° around the spring axis A9 in the case of two spring arm sections. Depending on the desired spring stroke, the number of spring arms can also deviate from two and, for example,

be 3 or 4.

The spring element 9 can be produced as a stamped and bent part from spring steel. Depending on the desired spring stiffness, it can have a material thickness of, for example, 0.3 mm to 0.8 mm when viewed from the side. Alternatively, production from plastic, in particular as an injection molded part, is also possible. Depending on the desired spring stiffness, the spring element 9 can have a material thickness of, for example, 0.5 mm to 2.5 mm when viewed from the side. When using plastic, the spring element 9 is designed in particular in such a way that the contact surface 14 of the clamping nut 10 comes into direct contact with the base plate 3 in the fully clamped state. In this case, the ring section 15 of the spring element 9 is preferably outside of the power flow. In this configuration, the spring element 9 preferably has a circumferential collar 20 which surrounds an edge section of the clamping nut 10 and

this applied from the base plate 3 away.

In the figures 3, 4 and 5 a profile connection arrangement 23 according to the invention or a corresponding assembly method with a connection arrangement 2 according to Figures 1 to 2 is shown. The profile connection arrangement 23 comprises a first C-shaped profile element 24 which is connected to a second C-shaped profile element 25 by means of the connection arrangement 2 . The two profile elements 24, 25 are of the same design in this exemplary embodiment, which is why only one representative is described here for the sake of abbreviation. However, it goes without saying that different structural elements can also be connected to one another. The profile elements each have a longitudinal slot 27 formed between two web sections 26, 26', the width B27 of which is dimensioned in relation to the clamping section 6, 6' of the fastening element 5, 5' such that the clamping section is in the first rotational position

Pl, Pl1' can be inserted into the longitudinal slot 27 and in the second

Rotational position P2, P2 'overhangs the longitudinal slot 27 transversely to the profile axis A24, A25 and is supported against the respective web sections 26, 26' and is axially prestressed against them.

To assemble the profile connection arrangement 23, the fastening element 5, 5' is inserted with its clamping section 6, 6' into the longitudinal slot 27 of the associated profile element 24, 25. Figures 3A to 3D show the state before and Figures 4A to 4D after insertion. Then the clamping nuts, 10, 10' or shank sections 8, 8' are axially loaded against the prestressing force of the associated spring element 9, 9', so that the anti-rotation section 7, 7' of the fastening element 5, 5' disengages from the non-circular through-opening 4 , 4' of the base plate 3 comes. The respective fastening element 5, 5' can now be rotated from the first rotational position P1, P1' into the second rotational position P2, P2'. Effective securing means between the clamping nut 9, 9' and the respective shank section 8, 8' ensure that the fastening element 5, 5' also rotates when the nut is rotated. In the second rotational position, which is shown in FIGS. 5A to 5D, the respective clamping section 6, 6' is supported against the web sections 26, 26' of the associated profile element 24, 25. The spring element 9, 9' then springs back and pretensions the fastening element 5, 5' against the profile rail 24, 25. Finally, the clamping nuts 10, 10' can be clamped so that the profiles are clamped firmly to one another via the connection arrangement 2. For clamping, the clamping nut 10, 10' is rotated relative to the fastening element 5, 5' and pulls this with the clamping section 6, 6' against the respective

profile rail.

The connection arrangement 2 according to the invention or a profile connection 23 produced from it has the advantage of simple and reliable assembly. The fastening element 5, 5'

can by means of the spring element 9, 9' by a simple push

and rotational movement with an associated profile rail 24, 25

be pre-assembled.

Reference List

2, 2' connection arrangement 3 base plate 4, 4' through opening 5, 5' fastening element 6, 6' clamping section 7, 7 anti-rotation section 8, 8' shaft section 9, 9' spring element 10, 10' clamping nut 11, 11 fastening unit 12, 12' clamping surface 13 support surface 14, 14' contact surface 15 disk section 16 disk section 17, 17) spring arm section 18 projection 19 projection 20, 20' collar 21, 21' positioning element 22, 22' marking 23 profile connection arrangement 24 profile element 25 profile element 26, 26' web section 27 longitudinal slot A axis B width D diameter H height

travel

16

Claims (1)

Patent Claims: Connection arrangement for connecting profile elements, especially for supporting frames for sanitary installations, full: a base plate (3) with at least one non-round through opening (4, 4'), a fastener (5, 5') having a shank portion (8, 8') with a shaft axis (A8, A8'), an anti-rotation section (7, 7') with a non-round profile and a clamping section (6, 6'), wherein the shaft portion (8, 8 ') through the through-opening (4, 4') and is secured at one shaft end by means of a clamping nut (10, 10'), a spring element (9, 9'), which is arranged between the base plate (3) and the clamping nut (10, 10') and the clamping section (6, 6') of the fastening element (5, 5') in the direction of the base plate (3) resiliently biased; wherein the fastening element (5, 5') in a first rotational position (Pl, P1') with the anti-rotation section (7, 7') non-rotatably in the non-circular through-opening (4, 4') intervenes wherein a spring deflection (59, S9') of the spring element (9, 9') is greater than the thickness (H3) of the base plate (3), so that by axially moving the clamping nut (10, 10') with the fastening element (5, 5 ') against the spring force of Spring element (9, 9') of the anti-rotation section (7, 7") of the fastening element (5, 5') can be disengaged from the non-circular through-opening (4, 4'), and the fastening element (5, 5') relative to the base plate (3) is rotatable. Connection arrangement according to claim 1, characterized, that the non-circular passage opening (4, 4') has a contour which engages the anti-rotation section (7, 7') in a first rotational position (P1, P1') and rotates it through 90° second rotary position (P2, P2 ') allows. Connection arrangement according to one of claims 1 or 2, characterized in that that the base plate (3) has at least one positioning element (21, 21') on its side facing the clamping section (6, 6'), which can engage in a longitudinal slot (27) of the profile element (24, 25) in order to position the base plate (3) to align with the profile element (24, 25). Connection arrangement according to one of Claims 1 to 3, characterized in that that the shank section (8, 8 ') on its front side a marking (22, 22') which is representative of the Rotational orientation of the clamping section (6, 6 '). Connection arrangement according to one of Claims 1 to 4, characterized in that that the clamping section (6, 6') has a flat clamping surface (12, 12') on the side facing the base plate (3). having. Connection arrangement according to one of claims 1 to 5, 19 characterized in that the spring element (9, 9 ') has a spring deflection (S9, S9') of at least 3 mm and at most 8 mm. Connection arrangement according to one of Claims 1 to 6, characterized in that that the spring element (9, 9') has a first disk section (15) which is supported axially against the clamping nut (10, 10') and a second disk section (16) which is supported axially against the base plate (3), and between the first disc section (15) and the second disc section (16) extending spring arm sections (17, 17'). Connection arrangement according to one of Claims 1 to 7, characterized in that that an average diameter (D15) of the first disk section (15) is smaller than an average diameter (D16) of the second disk section (16), and/or that a smallest outer diameter of the first disc section (15) is larger than a largest Outer diameter of the clamping screw (10, 10'). Connection arrangement according to one of claims 7 or 8, characterized in that that the spring arm sections (17, 17') extend helically around a spring axis (A9), wherein preferably exactly two spring arm sections (17, 17') are provided which are arranged point-symmetrically in relation to the spring axis (A9). are. Connection arrangement according to one of claims 1 to 9, characterized, 12. 13. 14 20 that the spring element (9, 9 ') made of a spring steel or plastic is made. Connection arrangement according to one of Claims 1 to 10, characterized in that that the clamping nut (10, 10 ') is designed as a self-locking clamping nut, so that the fastener (5, 5') when turning the clamping nut in Frame of pre-assembly rotates. Connection arrangement according to one of Claims 1 to 11, characterized in that that the base plate (3) has two non-round through openings (14, 14') and accordingly two fastening elements (5, 5') each with a clamping nut (10, 10') and a spring element (9, 9'). Connection arrangement according to one of Claims 1 to 12, characterized in that the fastening element (5, 5') is produced in one piece is. Profile connection arrangement (23) comprising: a C-shaped profile element (24) connected by means of a connection arrangement (2) according to any one of claims 1 to 13 is connected to a component; wherein the C-shaped profile element (24) has a longitudinal slot (27) formed between two web sections (26, 26'). has, the width of which in relation to the clamping section (6, 6 ') of the fastening element (5, 5') is dimensioned such that the clamping section (6, 6 ') in the first rotational position (PL, P1') in the longitudinal slot (27) can be inserted and in the 21 second rotational position (P2, P2') projects beyond the longitudinal slot (27) transversely to the profile axis (A24) and is supported against the web sections (26, 26'). Method of assembling a profile connection arrangement (23) according to claim 14 with the steps: Inserting the clamping section (6, 6') of the fastening element (5, 5') into the longitudinal slot (27) of the profile element (24, 25); Applying force to the clamping nut (10, 10') against the prestressing force of the spring element (9, 9'), so that the anti-rotation section (7, 7') of the fastening element (5, 5') disengages from the non-circular through-opening (4, 4') of the base plate (3); Twisting of the fastening element (5, 5') from the first rotational position (Pl, P1') into the second rotational position (P2, P2'), in which the clamping section (6, 6') against the web sections (26, 26') of the profile element (24, 25) is supported; The spring element (9, 9') springs back in the second rotary position (P2, P2'), so that the fastening element (5, 5') can be locked by engaging the anti-rotation section (7, 7'). is secured against rotation relative to the profile element (24, 25); Bracing the clamping nut (10, 10 '), so that the Clamping section (6, 6') against the web sections (26, 26') of the profile element (24, 25) is tightly clamped.