DE202006010207U1 - Device for attachment to a profile - Google Patents

Abstract

Device (100) for fastening fitting parts (17) to hollow-chamber profiles (18),
with a fastening member (7) passing through at least one wall (25) of the profile (18) in a perforation (26), via which forces can be introduced from the fitting part (17) into the profile (18),
wherein the fastening member (7) is designed as a fastening plug (1) which can be inserted into the perforation and has at least two latching projections (11, 12), between which at least one wall (25) of the profile (18) in the inserted state of the fastening plug ( 1) locks,
characterized,
the fixing plug comprises a cylindrical body which does not spread even when the fitting part is fastened.

Description

The The invention relates to a device for attachment to a profile, in particular for fastening of fittings to hollow chamber profiles, with a particular at least two walls of the profile in perforations passing fastener, on which forces of the fitting part can be introduced into the profile. The device is also for can be used for other purposes, for example as a spacer or as a cable feedthrough.

A device for fastening fittings is, for example, from DE 202 18 699 U1 known. The known device, which serves, for example, the attachment of bands for hinged joints of a wing, such as a window or a door, on a fixed frame, has a mounting screw, which includes a self-tapping external thread, so that it can be screwed into holes in the profile walls , The introduction of forces in the axial direction of the mounting screw in the profile walls via the engaged with the profile walls thread flanks. At the end facing the fitting part, the mounting screw has a radially extending beyond the external thread circumferential collar. Further, the mounting screw has a central longitudinal recess, in which a arranged in the direction of insertion at the rear end female thread and in the insertion direction at the front end of a hexagon socket to attack a turning tool are provided.

to Introduction of the mounting screw in the multi-chamber profile are initially the Holes in the required size incorporated in the profile. Subsequently the mounting screw with the turning tool in the profile perforations screwed in until the abutment collar rests against the outside of the profile. Subsequently the fitting is by means of a in the internal thread of the mounting screw engaged fastening screw screwed.

Though it is possible with the known device on a fitting part acting forces to initiate into several walls of the hollow profile, is disadvantageous However, that the mounting screw is expensive in your production. In addition, a screwing the mounting screw with too high torque to an undesirable Deformation of the profile walls, in which the external thread of the mounting screw intervene, lead.

Another device for fastening fittings on a profile is from the DE 196 07 029 C1 known. This device has a support bush which can be fixed in bores of the profile in an interference fit. The interference fit is caused by widening of the support sleeve when screwing in threaded pins.

adversely is in this support bush, that the holder of the fitting part at least substantially non-positively and only then takes place when the fastening screws screwed in for attaching the fitting become. This is after the introduction of the support sleeve in the Profile holes around their seat not guaranteed, so that they fall out or when screwing the mounting screws at least not im completely can be in the inserted state. The assembly of the fitting part This makes it difficult. Furthermore, due to the expansion the support bush, in turn, the risk that the profile walls themselves deform.

Another, generic device for fastening fittings discloses the EP 1 610 004 A1 , This comprises a fastening member comprising a monolithic metal body having a cylindrical central portion and an internal thread. The advancing in the insertion direction region, which extends over about two-thirds of the total length of the attachment member, has four circumferentially distributed longitudinal slots, which divide this area into four segments. The internal thread of the fastening member is formed such that this area widens when screwing a fastening screw for the fitting part, which in turn an interference fit of the fastening member is achieved in the profile.

Also the section adjoining this slotted area towards the fitting part of the fastening member is divided into four segments over four slots. Each segment has locking projections into which the edge of a profile perforation can engage.

Though is in this fastening device by means of the fastening member due to the locking projections an additional one Halt given in the profile perforation, however, is disadvantageous that the Attachment is expensive to produce. Also, turn clamping forces transferred to a profile wall, which can lead to a deformation of the same.

Of the Invention is therefore based on the object, a device for Attachment to hollow sections to create that easy in your Production is, and in particular a quick and easy installation a fitting allows for a multi-chamber profile.

These The object is achieved by the recited in claim 1 device solved.

Thereby, that the attachment member is not as a male threaded mounting screw is formed, but as a fixing dowel having at least two locking projections, between which a wall of the profile in the inserted state of the fixing dowel engages, can waive the formation of an external thread and so the production cost can be reduced. The assembly takes place in that the fixing dowel in the prefabricated perforations is introduced. Surprisingly has shown that by means of the locking lugs greater forces in the axial direction by means the fastening member can be introduced into the profile, as in a mounting member designed as a mounting screw. This is due to that the locking lugs on the profile wall over can cover a larger area than the flanks of a thread. Surprisingly it has been shown that only the locking lugs produce sufficiently high holding forces, so that in departure of the previous adjustment on a radial plant of the dowel is omitted at the Lochungsrad under bias.

Especially preferred is a development of the device according to the invention, in which at least the leading in the direction of insertion of the fixing dowel Latch under overcoming an elastic force below the diameter of one of the holes zurückverlagerbar is. Due to this configuration, a snap-in of the anchor takes place automatically, without that there are special measures needed by the mounting person.

For this it is particularly preferred if the latching projections on in the direction of Longitudinal axis of the fixing plug extending longitudinal slots from each other separate webs or tongues are formed. When introducing of the fixing dowel can Webs or tongues to the interior of the fixing plug or towards reduction the width of the longitudinal slots moved so far back to the inside of the temple be that the locking projections on Edge of a hole to be moved past the inside of the profile can, to reach behind the profile wall.

Especially preferred is a variant of the device according to the invention, in which the fixing plugs an internal thread and a complementary external thread fastening screw having. The assembly of the fitting can then by screwing done by means of the fastening screw.

Around to prevent the screwing of the fitting part by means of Fixing screw is thwarted by turning the fixing plug, has the fixing dowel Preferably means for preventing rotation in the perforations of the profile inserted state on.

These Means can in principle formed in any, preventing co-rotation of the fixing plug way be. However, it is particularly preferred if the means for preventing rotation a force-fitting or form-fitting cooperating with the fitting extension include. This extension can be designed such that it is between the fitting part and the profile when screwing in the fastening screw is trapped, or in the fitting part is provided a recess, in which the extension engages.

Especially preferred is a development of the device according to the invention, at the locking projections of the fixing dowel are arranged such that an end portion of the fixing dowel in assembled state of the fitting part facing wall of the profile stands out.

has this end region, as is particularly preferred, has an outer circumferential surface, the centering engages in a bore of the fitting so finds when mounting the fitting automatically a positioning of the same instead, in the case of a tape, for example, a tilting of the Hinge axis prevented.

in the In the case of the presence of this lateral surface, it is particularly preferred when the anti-rotation causing extension arranged on the lateral surface is and in a complementary recess engages the fitting part.

Especially preferred is a variant of the device according to the invention, in which the Latching projections, between which a wall of the profile in the inserted state the fixing dowel engages, longitudinal of the fixing plug about 2.5 mm. The fixing dowel is then universally applicable, since the wall thicknesses of the usual used profiles are always smaller than 2.5 mm. This variant of the fixing dowel is but also for smaller wall thicknesses, for example, 1 mm suitable because when tightening the fastening screw which engages behind the profile wall latching projections be pulled against the same and thus a backlash seat of fixing plug is effected.

In a further variant of the device according to the invention the distance of the locking projections in the longitudinal direction of the fixing dowel is slightly larger than the distance of the opposite sides of two profile walls. Such a trained dowel thus engages behind with at least one locking projection a profile wall and with at least one other catch projecting another profile wall. In the longitudinal direction of the fixing dowel acting holding forces are then - depending on the orientation - introduced into one or the other profile wall.

at a further variant of the device according to the invention, for attachment of fittings on at least three walls comprising profiles is suitable, the latching projections are arranged such that they reach behind the at least three walls.

Of the fixing plugs is preferably made of plastic, in particular of glass fiber reinforced polyamide (PA66 GF), because of this material, for example by injection molding without additional shaping or machining can be produced. Further This material is characterized by a low thermal conductivity which prevents the formation of undesirable cold bridges.

Should the device according to the invention However, fire protection requirements must be met, the fixing dowel can also be made of metal.

at a further embodiment the device according to the invention includes the fixing dowel one over his entire length extending slot. The slot width is such that the Leading locking projection through the perforation in the profile wall be passed is when the fixing dowel is compressed by reducing the slot width.

Around the squeezing is preferably at least one area of increased compliance on the fixing dowel provided, which are effected in particular by a wall thickness reduction can.

The Invention will now be explained in more detail with reference to the accompanying drawings. Show it:

1a) to c) a first embodiment of the fixing plug of a device according to the invention in perspective views, and a view of the in 1 not shown fitting part facing the end of the fixing dowel,

2a) and b) a second embodiment of a fastening plug of a device according to the invention in a perspective view and in a view of the fitting part, not shown in the drawing end of the fastening plug;

3 a cross section through a profile with inserted dowel and attached fitting part with a partially sectioned representation of the fixing dowel;

4a) to c) a third embodiment of the fixing plug of a device according to the invention in a perspective, a side and a front view of the in 4 not shown fitting part facing the end;

5 a perspective view of a fourth embodiment of a fixing dowel;

6 a fifth embodiment of a fixing dowel in one 5 corresponding view;

7 a section of a multi-chamber profile in a partial longitudinal section with fastening dowels inserted in three different embodiments;

8a) to c) sections according to section lines AA, BB and CC in 7 such as

9a) to c) a sixth embodiment of the fixing plug in a 4a) to c) corresponding representation.

The one attachment member 7 the device according to the invention 100 forming fixing dowels 1 according to 1 comprises a cylindrical base body 2 , whose illustrated in the drawing below, in the direction of insertion into a profile front end in order to facilitate the introduction into a profile perforation, whose diameter is only slightly larger than the outer diameter of the base body 2 is, a chamfer 3 having.

At the chamfer 3 opposite end of the base body 2 is a dowel head 4 formed, the first a conically widening area 5 , a subsequent Rundumnut 6 , one the Rundumnut 6 limiting area 8th extended diameter, introduced into a profile state of the fixing plug from the fitting part facing wall of the profile outstanding end portion 9 and a tapered chamfer 10 includes. The conical area 5 and the area 8th form latching projections 11 . 12 and the outer surface of the end portion 9 is formed such that it can engage centering in a bore of a fitting part (see 3 ).

The dowel head has evenly distributed over its circumference extending in the direction of the longitudinal axis S of the fixing dowel slots 13 on, the dowel head 4 in four tongues 14 divide.

Furthermore, the fixing dowel 1 one from the dowel head 4 extending through-hole 15 in which an internal thread 16 is incorporated. However, the bore can also be formed as a through hole. It is then possible to use the fixing plug as a cable gland.

In the 3 as a whole with 100 designated device for fixing a fitting part 17 on a multi-chamber profile 18 further comprises a fastening screw 19 whose external thread 20 complementary to the internal thread 16 is trained. How out 3 is apparent, the attachment of the fitting takes place partly 17 by screwing in the fastening screw 19 in the internal thread 16 in the multi-chamber profile 18 used fastening dowels 1 ,

To avoid that the used fixing dowel when tightening the fixing screw 19 rotates, this points to the dowel head 4 Anti-rotation device 21 on. These can be used as different extensions, for example as an eccentric 22 , as a cam 23 or as a rib 24 be formed so that they force or - if the fitting has a complementary recess - form-fitting with the fitting part 17 interact. It is also conceivable to effect the rotation over a deviating from a circular outer contour of the fixing dowel and the perforations.

The means for preventing rotation 21 can also - as with the otherwise to the basis of 1 described identical embodiment according to 2 shown - as a bridge 24 between two fixing dowels 1 be educated. With regard to the structural design and functionality of the 2 in order to avoid repetition, the fastening dowel shown in FIG 1 directed. By means of the bridge 24 If necessary, several fixing dowels can also be combined into modules, which then allow a common installation of several fastening dowels in correspondingly arranged perforations.

In the further, in 4a ) to c) are missing in the attachment plugs 30 in contrast to the otherwise identical fixing dowel 1 the internal thread 16 , the end area 9 and the means for preventing rotation 21 , Fixing dowels of this type are thus suitable fitting parts with the aid of clamping elements - such as rivets or expansion dowels - to attach to a profile.

At the in 5 illustrated embodiment of the fixing dowel 40 becomes the first locking projection 41 provided by a on the fitting part, not shown in the drawing facing the front end, radially projecting collar 42 educated. This collar lies - as in particular in 7 and 8a) it is recognizable - in the inserted state of the fixing plug 40 at the attachment side 27 of the profile forming profile wall.

A plurality of second locking projections 43 , in turn, through through slots 44 separate tongues 45 are formed, have contact surfaces 46 on that to the contact surface 47 of the collar 42 in the longitudinal direction of the fixing dowel 40 have a distance which is slightly larger than that to the attachment side 27 of the profile continuing page 48 a profile wall 49 is (cf. 7 ). In this embodiment, in the longitudinal direction of the fixing dowel according to 7 left-to-right forces from the collar 42 , Such forces acting in the reverse direction of the locking projections 43 added.

At the in 6 illustrated fixing dowels 50 are more locking projections 53 provided, the design and function of the locking projections 43 correspond. This fixing dowel 50 is thus suitable for use on a hollow profile, which is another, of the profile wall 48 by the length L between the contact surfaces 46 and 56 spaced profile wall 58 includes, suitable. In this fixing dowel holding forces, as shown in 7 from right to left act on the locking projections 43 and 53 in several profile walls 48 . 58 initiated, so that this fixing dowel is suitable for receiving higher holding forces.

all shown and / or described fixing dowels together, that the holding forces only about latching projections be initiated in profile walls and no clamping fit by radial Expansion of the dowel used causes becomes.

As in particular from 3 . 7 and 8th is apparent, an attachment of a fitting takes place 17 with the device according to the invention 100 on a profile walls 25 having multi-chamber profile 18 in that first perforations 26 in the profile walls 25 are incorporated, whose diameter is slightly larger than the diameter of the base body 2 is.

Then the fixing dowel 1 with his chamfer 3 leading from the attachment side 27 in the holes 26 introduced. This slides the conical area 5 at the edge of the perforation 25 the mounting wall 25 holding the attachment side 27 forms, under elastic relocation the tongues 14 from, until the fixing plug 1 in the 3 shown position in the multi-chamber profile 18 has reached. When reaching this position, the tongues spring 14 elastically outwards, whereby the Lochungsrand in the Rundumnut between the locking projections 11 and 12 locks. The fixing dowel 1 is thereby axially fixed in the direction of the longitudinal axis S.

In this position, the fitting part 17 , which one on the outer circumferential surface of the end portion 9 adjusted bore 28 has, on the end region 9 put on and by means of a mounting hole 29 in the fitting part 17 thorough fastening screw 19 tightened.

Should the fixing plug 1 from the multi-chamber profile 18 must be removed, this can be done in the after removal of the fitting part 17 the end area 9 while reducing the width of the slots 13 as far as being compressed, that the fastening side 27 forming wall 25 from the locking projections 11 is released again and the fixing plug can be pulled out.

The distance between the two locking projections 11 . 12 in the direction of the longitudinal axis S and the width of the Rundumnut 6 is about 2.5 mm. Due to this measure, the fixing dowel 1 in conventional multi-chamber profiles 18 universally use, since their profile walls 25 always have thicknesses that are smaller than 2.5 mm.

At the in 9a) to c) illustrated embodiment, the fastening dowel 60 a longitudinal slot 59 on. Whose width is chosen so that the fixing dowel can be compressed so far that in the compressed state, the outer circumference of the locking projection 11 smaller than the inner circumference of the profiled perforations into which the fixing plug is to be inserted is.

To facilitate the compression, 90 ° offset from the inner circumference of the bore 15 in the dowel wall extending wall thickness reductions 61 provided the areas 62 form greater compliance.

100

fastening device

1

fixing plugs

2

base body

3

chamfer

4

dowel head

5

conical Area

6

Rundumnut

7

attachment member

8th

Area

9

end

10

chamfer

11

catch projection

12

catch projection

13

slots

14

tongues

15

drilling

16

inner thread

17

fitting part

18

More chamber profile

19

fixing screw

20

external thread

21

medium to prevent rotation

22

eccentric

23

cam

24

web

25

profile walls

26

perforations

27

mounting side

28

drilling

29

mounting hole

S

longitudinal axis

30

fixing plugs

40

fixing plugs

41

catch projection

42

collar

43

latching projections

44

slots

45

tongues

46

contact surface

47

contact surface

48

page

50

fixing plugs

53

latching projections

56

contact surface

58

profile wall

59

slot

60

fixing plugs

61

Wall thickness reduction

62

Area

Claims (17)

Contraption ( 100 ) for fastening fittings ( 17 ) on hollow chamber profiles ( 18 ), with at least one wall ( 25 ) of the profile ( 18 ) in a perforation ( 26 ) passing through the attachment member ( 7 ), over which forces of the fitting part ( 17 ) in the profile ( 18 ) are introduced, wherein the fastening member ( 7 ) as fixing dowels ( 1 ) is formed, which is inserted into the perforation and at least two locking projections ( 11 . 12 ), between which at least one wall ( 25 ) of the profile ( 18 ) in the inserted state of the fixing plug ( 1 ) engages, characterized in that the fixing dowel comprises a cylindrical body, which does not spread even when the fitting part is attached. Apparatus according to claim 1, characterized in that at least in the insertion direction of the fixing plug ( 1 ) leading latch ( 11 ) by overcoming an elastic force below the diameter of one of the perforations ( 26 ) is zurückverlagerbar. Apparatus according to claim 2, characterized in that the latching projections ( 11 . 12 ) on in the direction of the longitudinal axis S of the fixing dowel 1 running longitudinal slots ( 13 ) are formed from separate webs or tongues. Device according to one of claims 1 to 3, characterized in that the fixing dowel ( 1 ) an internal thread ( 16 ) and one, a complementary external thread ( 20 ) comprehensive fixing screw ( 19 ) having. Device according to one of claims 1 to 4, characterized in that the fixing dowel ( 1 ) Means for preventing rotation ( 21 ) in the perforations ( 26 ) of the profile ( 18 ) has been inserted. Device according to claim 5, characterized in that the means for preventing rotation ( 21 ) one with the fitting part ( 17 ) comprise positively and / or positively cooperating extension. Device according to one of claims 1 to 6, characterized in that the latching projections ( 11 . 12 ) are arranged such that an end region ( 9 ) of the fixing plug ( 1 ) in the assembled state from the fitting part ( 17 ) facing wall of the profile ( 18 ) stands out. Device according to claim 7, characterized in that the end region 9 has an outer circumferential surface, the centering in a bore ( 28 ) of the fitting ( 17 ) intervenes. Apparatus according to claim 6 and 8, characterized in that the extension on the lateral surface ( 9 ) is arranged. Device according to one of claims 1 to 9, characterized in that the distance of the latching projections ( 11 . 12 ) in the longitudinal direction S of the fixing plug ( 1 ) is about 2.5 mm. Device according to one of claims 1 to 9, characterized that the distance of the locking projections longitudinal of the fixing dowel slight greater than the distance between the opposite sides of two profile walls is. Device for fastening fittings at least three walls comprising profiles according to one of claims 1 to 11, characterized in that it comprises the at least three walls engage behind. Device according to one of claims 1 to 12, characterized in that the fixing plug ( 1 ) made of plastic, in particular glass fiber reinforced polyamide. Device according to one of claims 1 to 12, characterized in that the fixing plug ( 1 ) consists of metal. Device according to claim 1 or 2, characterized in that the fixing plug ( 60 ) has a slot extending over its entire length ( 59 ). Device according to claim 15, characterized in that the fixing plug ( 60 ) at least one area extending over at least part of its length ( 62 ) has increased compliance. Apparatus according to claim 16, characterized in that the region of increased compliance, a wall thickness reduction ( 61 ) of the fixing plug ( 60 ).