DE202010002880U1 - Screw, insulating glass window with one or more such screws and device for mounting the screws in the insulating glass window - Google Patents

Abstract

Screw (13) designed for mounting in an insulating glass unit (1) for windows, doors and facades
with a screw head (15),
with a shaft (17)
and a threaded portion (18) carrying a self-tapping and / or a self-stamping thread or a nail screw thread,
wherein the shank (18) has a tapering region in which the diameter and / or the cross section of the screw (13) decreases in the direction of the threaded section (18),
marked by
a sealing portion (16), wherein the sealing portion (16) as a shaft (18) circumferential seal is formed and wherein in a plan view (A) on the screw head (15) of the screw head (15) with the sealing portion (16) terminates or protrudes beyond the sealing portion (16).

Description

The The invention relates to a screw with a screw head, with a Shank and with a threaded portion of a self-tapping and / or self-marking thread or a nail screw thread carries, wherein the shank a rejuvenation area in which the diameter and / or the cross-section of Reduced screw in the direction of the threaded portion, and with a Seal portion, wherein the seal portion as a the shaft circumferential seal is formed. The invention also relates an insulating glass unit with one or more such screws and a device for mounting the screws in the insulating glass unit.

screw are known in a variety of designs and can constructive in a screw head, in a shaft and a Thread section are divided. Depending on the application area there it specially adapted screws. For example, some Screws from Spax with self-tapping or self-stamping threads made and used for the attachment of chipboard.

The The basic principle of insulating glass windows was already at the beginning of the last Presented since the fifties as advantageous Possibility exposed, window areas towering technical properties with regard to thermal insulation or soundproofing. Usual insulating glass units in windows consist of at least two glass panes, which are spaced apart are arranged to each other. Wraps around in the border areas a spacer, which laterally to the glass sheets with a Primary seal is sealed and thus a first sealing plane to Seal the insulating area between the glass forms. To give the insulating glass unit mechanical stability and for improving the long-term sealing, it is known Secondary seal on the back of the spacer applied.

If in the insulating glass unit between the glass panes sprouts, such as these, for example, listed buildings are known to be introduced, there is a need to this Attach rungs.

An apparatus and a method for mounting a rung to a spacer is for example from the document DE 10 2005 056 123 A1 which is probably the closest prior art. To fasten the rung, a fastening means, for example a screw, is driven by the spacer, which penetrates into a plastic end stopper introduced in the end face of the rung and thereby fixes the rung to the spacer.

Of the Invention is based on the object, an improved screw, to propose an insulating glass unit and a device for mounting the screws, which an improved product quality of the insulating glass unit and / or a simplified manufacturing possible.

These Task is by a screw with the features of the claim 1, by an insulating glass unit with the features of the claim 13 and by a device having the features of the claim 21 solved. Preferred or advantageous embodiments The invention will become apparent from the dependent claims, the following description and the accompanying figures.

in the Frame of the invention, a screw is presented, which for Installation in an insulating glass unit, especially like this later will be described, is formed.

The Screw includes a screw head, preferably a mechanical Having interface for initiating a screwing. Especially preferably, the mechanical interface is as a cross slot or a pozi-drive drive formed. The underside of the screw head is preferably flat and / or smooth. To the screw head joins a shaft, which is a thread-free Forming area of the screw. Then to the shaft followed by a threaded portion of a self-cutting and / or carries a self-engraving thread. Especially the thread is self-tapping or self-stamping for Metal or plastic formed and / or has a self-tapping Chipboard screw thread on. For example, the screw designed as a chipboard screw with Phillips.

alternative For this purpose, the threaded portion on a nail thread, which in Contrary to conventional screws linear and not rotating be introduced into the workpiece, which is the manufacturing step simplified.

Of the Shank shows a rejuvenation area in which the Diameter and / or the cross section of the screw, in particular of the shaft, reduced in the direction of the threaded portion. Especially the tapering area is cone-shaped.

According to the invention, the screw has a sealing portion, which is designed as a seal surrounding the shaft. It is envisaged that in a plan view of the screw head of the screw head with the sealing portion bün concludes dig or over the sealing portion. In plan view, the sealing portion thus forms no additional interference or collision contour in the axial direction. Particularly preferably, the sealing portion is formed as a lower head seal.

It is a consideration of the invention, a screw to propose for installation in an insulating glass unit, which self-sealing and / or diffusion barrier properties in the sealing region of the sealing portion can provide. However, the automation of manufacturing Not to endanger, it is important that the sealing section do not overhang the screw head to the Transport of the screw in feed channels of the Mounting device not to hinder. The inventive Screw can thus - as will be explained later - in a mounting device already used for Screws with the same screw head diameter, but without Seal is set up. In addition, it is to be feared that if the sealing section has got over, this leads to blockages or jamming in the feed channels of the Mounting device could come. In addition, by the Inventive embodiment of the automated Separation of the screws simplified.

Around snagging, jamming etc. of the invention To prevent screws in the bulk material and also the compatibility It has got to increase with existing mounting devices proved to be advantageous that the diameter or the cross section of the sealing portion in the direction of the threaded portion monotonically, in particular severely monotonically reduced and / or that of Sealing portion is formed cone-shaped. this applies preferably only for one of the threaded portion facing Area of the sealing section, as on the back of the Seal section a connection to the shaft, the rejuvenation area and / or the screw head must be provided. Preferably the diffusion barrier used for the sealing portion Material on the surface is dry and not sticky.

at an appropriate design of the screw is the sealing portion formed of diffusionssperrendem material. This training takes into account the fact that in an insulating area there is a vacuum between the glass panes of the insulating glass unit, Noble gas is filled or another special gas climate prevails. After windows with such insulating glass units years or decades, supports the diffusion-blocking Material preserving the gas climate.

For example is the sealing portion of a butyl, elastomer or a Plastisol manufactured. It may be provided that the sealing portion as an informal mass applied to the screw or as a separate sealing body, such as an O-ring or the like, is attached.

at an advantageous embodiment of the invention closes the rejuvenation area on the bottom of preferably flat screw head, wherein between the tapering and the edge of the screw head in axial projection an annular surface remains. This ring surface can accommodate the Seal section and / or this provides a sealing surface for the sealing section in deformed and / or built-in State. The annular surface preferably has a width, that is a radius difference of more than 0.5 mm, preferably more than 0.8 mm and in particular more than 1 mm.

at a preferred embodiment is the sealing portion in an undeformed state at least in sections on the Ring surface mounted and extends in the radial direction preferably up to the rejuvenation area.

at a possible alternative of the invention is between the tapering area and the edge of the screw head a ring portion provided, which has a circumferential recess, in particular groove shows, in which the sealing portion preferably in the undeformed Condition is present. This depression increases to one the installation space for the sealing portion and forms a reservoir for the sealing section so that this a larger volume and therefore better deformability having. Second, the diffusion path between the screw and Sealing section artificially extended in the radial direction, so that a better seal is expected here. Also prevented the well the complete leakage / squeezing out of the Sealing section when tightening the screw.

at an advantageous embodiment of the invention has the screw head has a maximum axial height of less than 1.3 mm, preferably less than 1.1 mm and in particular smaller than 1 mm. The height is in particular as difference between the axial position of the sealing surface and a maximum Height of the screw head measured. Especially preferred the screw head is designed as a flat head. This embodiment provides sure that the screw head after mounting in the insulating glass window survives only slightly. Alternatively considered is the screw preferably designed so that these in the mounted state only to the said axial height protrudes.

alternative or in addition, it is preferable that the screw head a maximum cross section of less than 6 mm, preferably smaller than 5 mm and in particular less than 4 mm. Dependent of it, how the place for the screw head with some Embodiments of the insulating glass unit by the distance the window is reduced or by other sealing areas is limited, such a narrow screw head is an advantageous Solution.

at a further embodiment of the invention, the Screw head on an annular groove which in the shaft or in the Bottom of the screw head is inserted and as a receptacle for the sealing section is used. This ring groove secures the position the sealing portion and / or allows an enlargement the sealing volume, which the adaptability the sealing portion improved.

considered one the screw in a longitudinal section through the axial Axis and you put an imaginary line perpendicular to the course of the rejuvenation area, so it has to be beneficial proved the maximum thickness of the sealing area along the imaginary Line in a range between 0.3 mm and 0.8 mm, in particular with 0.5 mm to choose.

One Another object of the invention relates to an insulating glass unit with at least two pieces of glass or plates between them form an insulating region, wherein the insulating glass unit a preferably circumferential sealing arrangement for sealing the insulating region has, in the at least one screw according to one of the preceding Claims is introduced. The isolation area is with a Noble gas atmosphere, with vacuum or with another special Gas climate, which differs from the environment in particular by pressure or chemical composition is different, supplied.

at a preferred embodiment, the screw is for Sealing a filling opening and / or ventilation opening used in the sealing order. Such openings are used to make the insulation area with the desired To equip gas climate, so that, for example, by filled the filling a noble gas and remaining through the vent opening Ambient air can be extracted.

Especially it is preferred that the screw for fixing a design and / or Function component, which is used in the insulating used becomes. In this embodiment, the screw penetrates at least in sections, the seal assembly, in particular the first sealing level and penetrates with its free end into the design and / or functional component.

Especially Preferably, the component is as a rung, so preferably one horizontal or vertical optical division of the insulating glass unit, which is arranged between the glass panes, formed. such Sprouts are usually realized as hollow profiles, with the screw inserted into one end of the rung becomes. Other alternatives are the fixation of a blind arrangement or a solar module, which or which arranged in the insulating region is.

at a possible structural embodiment of the invention the seal assembly has a marginal spacer profile - too Spacers called - on, which in the edge region of the Window panes and which forms part of a primary seal, in particular forms a primary seal plane. The areas between the spacer profile and the glass panes are over a thermoplastic sealant (isobutylene) that penetrates Pressing firmly connects with the glass surfaces, sealed. In the spacer profile, chemicals can be used to bind trapped in the disk space during production or during production over time into the space between the windows penetrating moisture be arranged.

It it is envisaged that the at least one screw the distance profile penetrates, so after the assembly of glass panes and distance profile screwed from the outside into the spacer profile, this permeates and fixes the design and / or functional component.

Of the Seal section of the screw thereby ensures that through the screw drilled opening through the spacer profile sealed, in particular diffusion-locked. By this measure ensures that the injury introduced by the screw in the primary seal, in particular primary seal plane is securely sealed.

at A preferred embodiment of the invention is the threadless shank portion the screw formed longer than the thickness of the spacer profile in the drilling direction. This can be done after grasping the screw in the design and / or functional component used this to the distance profile be excessive without the gap profile to hurt.

In an advantageous development of the invention, the insulating glass unit, in particular the sealing arrangement - called edge bond - comprises a secondary seal, which on a side facing away from the insulating region of the spacer profile, ie the back, is arranged and which covers the screw head of the screw. Preferably, the secondary seal is also formed circumferentially continuous.

With the use of the screw according to the invention Ensures that every transition between insulation and the environment is sealed at least twice. The screwless Area is secured by the primary and secondary seals, in the area of the screws, the violation of the primary seal, in particular the primary sealing plane by the additional Compensated sealing portion, so that here is a double seal prevails. In this embodiment, the insulating glass unit high quality and durable against entering and leaking gases and moisture sealed. In particular, will thereby fogging the insides of the glass sheets in the insulating area due to condensing moisture and misting through from outside Fogging prevented.

In A preferred embodiment is the secondary seal as a shapeless mass, in particular of silicone, polyurethane (PU) or polysulfides (PS) formed. The informal mass is able to easily at the contour, which through the back of the spacer profile, the adjacent glass panes and the screw heads formed is to dense process-reliable.

at another embodiment is the secondary seal only at the edge, designed and used for mechanical stabilization the connection between glass pane and distance profile. A circumferential Middle area on the back of the spacer profile between the glass plates, however, is recessed from the seal, in particular the screw heads of the screws are not through the secondary seal covered. This embodiment is the consideration Basically, that the sealing portion of the screw the injury Sufficiently seals in the spacer profile, leaving a secondary seal in the middle area is not necessary. By this measure, So the only edge-side formation of the secondary seal, on the one hand the thermal bridge, which otherwise is formed by the secondary seal, interrupted. On the other hand, material is saved significantly, so that the production costs are reduced.

One Another object of the invention relates to a mounting device for mounting the previously described screws in an insulating glass unit such as has been previously described, the conversion-free inventive Screws and screws without sealing section, but with the same Length and head diameter can use.

Further Features, advantages and effects of the invention will become apparent the following description of preferred embodiments the invention. Showing:

1 a schematic cross section through an insulating glass unit of a window;

2 a schematic three-dimensional representation of a sprout insert for the window in the 1 ;

3 in a similar representation as in the 1 a cross section in the region of a mounting portion of a rung;

4 a screw, as used in the insulating glass unit of the preceding figures used in a schematic side view;

5 the screws in the 4 inserted in the distance profile;

6 . 7 two further embodiments of the invention in a schematic side view.

each other corresponding or identical parts are in the figures each with provide the same reference numerals.

The 1 shows a schematic sectional view of an insulating glass unit 1 as it can be used for example in windows, doors, etc.

The insulating glass unit 1 comprises two mutually parallel, but spaced glass panes 2 , In other embodiments, more than two glass sheets may be provided. For spacing the glass panes 2 the insulating glass unit comprises a spacer profile 3 , which serves as a spacer. The distance profile 3 can, as shown, be designed as a hollow profile, in other embodiments, it may also be a solid profile or a U-profile. In the distance profile 3 are chemicals in some embodiments 4 , in particular desiccant, introduced which moisture from the insulation 5 tie.

To create a fluidic connection between the chemicals 4 and an isolation area 5 between the glass panes 2 to allow, has the distance profile 3 outlet 6 or perforations. In the isolation area 5 Often a gas is introduced for thermal insulation. The distance profile 3 can be constructed for example of plastic, in modified embodiments, also made of aluminum or steel. In yet other forms hybrid designs are used, the may consist of plastic with VA film or fiber reinforced plastic with VA film or other gas and moisture impermeable barrier films. The height H, so the profile height measured between the discs of the spacer profile 3 is usually about 6.5-8.0 mm.

Between the distance profile 3 and the inner surfaces of the glass panes 2 are seals 7 introduced, which for example consist of a thermoplastic sealant (eg., Isobutylene or butyl). spacers 3 and seals 7 together form a primary seal 8th in the sense of a primary seal plane for sealing the insulation area 5 against the environment.

To improve the tightness is on the back 9 of the distance profile 3 a second gasket layer 10 applied, which is usually applied informally and consists of a sealant, such as polyurethane or polysulfide. The second gasket layer 10 thus forms a secondary seal. The gasket layer 10 extends between the insides of the glass panes 2 and lies on his back 9 on.

For visual reasons, it is sometimes desired that between the glass panes 2 sprouts 12a , b ( 2 ) or a sprout grid 11 be introduced. An exemplary sprout cross 11 is in the 2 shown in a schematic three-dimensional representation. The sprout cross 11 includes two intersecting sprouts 12a . 12b , which with their free ends to the circumferential distance profile 3 nudge. This unit, consisting of the sprout cross 11 and the distance profile 3 , after mounting between the two glass panes 2 used. To slipping the sprout cross 11 To prevent, the sprouts must 12a , b with the distance profile 3 get connected.

The connection is made by means of a screw 13 like this in the 3 is shown schematically. The 3 shows the insulating glass unit 1 in a similar representation as in the 1 in the area of the connection of a rung 12a , b. The rung 12a , b has an end plug at its free end 14 on, in which the screw 13 through the distance profile 3 is screwed through. Thus, by the screw 13 the sprouts 12a , b to the back 9 of the distance profile 3 used.

After mounting the sprout cross 11 between the two panes of glass 2 becomes the back 9 with the screw head resting thereon 15 the screw 13 with the gasket layer 10 Mistake. As is clear from the 3 results, put through the screw 13 formed through holes in the spacing profile 3 a flow channel, which is not through the seals 7 is sealable, since this fluidically parallel to the seals 7 are arranged, which form the primary seal. To still get a sufficient seal, have the screws 13 an additional sealing section 16 as underhead seal on, as is closer in the 4 is shown.

The 4 shows the screw 13 from the preceding figure, which is a screw head 15 with attached shaft 17 and a threaded portion 18 includes. The screw head 15 has a diameter d of about 5 mm. The threaded section 18 has a length of about 20 mm. The cone-shaped shaft 17 has an opening angle of about 90 °. The thread of the threaded section 18 is designed as a self-tapping and / or self-stamping thread. The summit 19 of the threaded portion 18 is formed thorn-shaped.

The sealing section 16 is as a the shaft 17 formed circumferential seal, which in the 4 outlined in the marginal areas as a section and ruled in the middle area. The sealing section 16 is designed so that it in a plan view in the direction of A on the screw head 15 from the screw head 15 is covered. This embodiment allows the screw 13 can be used in a simple manner isolated and automated. The maximum thickness of the sealing section 16 according to the arrows b is about 0.5 mm. The material of the sealing section 16 is for example an elastomer or a plastisol with a dry, non-sticky surface. The height of the screw head 15 is designed very low, leaving a supernatant over the back 9 of the distance profile 3 is kept low.

To clarify the dimensions and the application shows the 5 a detail view of the distance profile 3 with screw inserted 13 , When screwing is through the threaded tip 19 first the distance profile 3 punched, the self-tapping threaded section 18 ensures that the screw 13 can be screwed in quickly. Through the cone-shaped shaft 17 become sections of the back 9 In the region of the passage opening in the cross-sectional representation shown, V-shaped pressed inwards, so that the screw head 13 almost flush with the back 9 lies. In particular, the screw is structurally designed so that the height h to which the screw head is the back 9 surmounted, smaller than 1.3 mm or 1 mm.

The sealing area 16 covers the entire area sealingly against the back 9 on, so that the additional channel, formed by the through hole of the screw 13 in the distance profile 3 , is closed reliably.

In a further development of the invention can be provided that the thread-free shaft 17 , extends, for example cylindrical, with a length longer than the height H of the spacer profile 3 is formed to avoid unnecessary injury of the distance profile 3 to avoid.

In the 6 and 7 are two more screws 13 shown as embodiments of the invention. Both screws 13 point at the bottom of the screw head 15 a ring area 20 on, the one at the screw in the 6 as a ring surface 21 and at the screw 13 in the 7 as a circumferential depression 22 is trained. The sealing section 16 extends slightly spaced from the screw head edge over the ring area to the shaft 17 , When mounting the screw 13 becomes the sealing portion 16 against the ring area 20 So the ring surface 21 or the depression 22 pressed.

The depression 22 offers the advantage that here a reservoir for the sealing material of the sealing portion 16 is formed so that sufficient sealing material for the sealing function in the required area between the screw head and spacer back around the borehole remains. The geometry of the depression, which in the example in the 7 z. B. V-shaped (other geometries are possible), prevents the complete leakage / squeezing of the sealing material when tightening the screw 13 ,

1

insulating glass unit

2

glass panes

3

spacers

4

chemicals

5

isolation

6

outlet

7

seals

8th

Primary sealing / primary sealing plane

9

move

10

Sealing layer / secondary seal

11

Crossbar

12a, b

rung

13

screw

14

end plugs,

15

screw head

16

sealing section

17

shaft

18

threaded portion

19

top

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102005056123 A1 [0005]

Claims (21)

Screw ( 13 ) designed for mounting in an insulating glass unit ( 1 ) for windows, doors and facades with a screw head ( 15 ), with a shaft ( 17 ) and with a threaded section ( 18 ), which carries a self-tapping and / or a self-embossing thread or a nail screw thread, wherein the shaft ( 18 ) has a tapering region, in which the diameter and / or the cross section of the screw ( 13 ) in the direction of the threaded portion ( 18 ), characterized by a sealing portion ( 16 ), wherein the sealing section ( 16 ) as one the shaft ( 18 ) circumferential seal is formed and wherein in a plan view (A) on the screw head ( 15 ) the screw head ( 15 ) with the sealing portion ( 16 ) or via the sealing section ( 16 ) survives. Screw ( 13 ) according to claim 1, characterized in that the outer diameter and / or the cross section of the sealing portion ( 16 ) in the direction of the threaded portion ( 18 ) monotonically, in particular severely monotonically reduced and / or cone-shaped. Screw ( 13 ) according to claim 1 or 2, characterized in that the sealing portion ( 16 ) is formed of a diffusion barrier material. Screw ( 13 ) according to one of the preceding claims, characterized in that the sealing portion ( 16 ) consists of a butyl, PU, PS, silicone or a plastisol. Screw ( 13 ) according to one of the preceding claims, characterized in that the sealing portion ( 16 ) as a shapeless mass on the screw ( 13 ) is applied or placed as a separate sealing body. Screw ( 13 ) according to one of the preceding claims, characterized in that the tapering region on the underside of the screw head ( 15 ), wherein between the tapering area and the edge of the screw head a ring area ( 20 ), in particular a ring surface ( 21 ) remains. Screw ( 13 ) according to claim 6, characterized in that the ring area ( 20 ) has a width of more than 0.5 mm, preferably more than 0.8 mm and in particular more than 1 mm. Screw ( 13 ) according to claim 6 or 7, characterized in that the ring area ( 20 ) a sealing surface for the sealing portion ( 16 ) in the deformed and / or installed state forms. Screw ( 13 ) according to one of claims 6 to 8, characterized in that the annular region is set back relative to an annular surface in sections and / or a circumferential groove or depression ( 22 ), in or at which the sealing portion ( 16 ) is supported in the axial direction. Screw ( 13 ) according to one of the preceding claims, characterized in that the screw head has a maximum axial height (h) of less than 1.3 mm, preferably less than 1.1 mm and in particular less than 1 mm and / or a maximum diameter (i.e. ) of less than 6 mm, preferably less than 5 mm and preferably greater than 4 mm. Screw ( 13 ) according to any one of the preceding claims. characterized by an annular groove in the shaft ( 17 ) or in the bottom of the screw head ( 15 ) is introduced and as a receptacle for the sealing portion ( 16 ) serves. Screw ( 13 ) according to one of the preceding claims, characterized in that the sealing portion ( 16 ) in a longitudinal section through the screw ( 13 ) in a direction perpendicular to the course of the tapering region has a thickness of at least 0.3 mm, preferably at least or about 0.5 mm and / or at most 1 mm, preferably at most 0.8 mm, in particular at most 0.6 mm , Insulating glass unit ( 1 ) for a window with at least two panes of glass ( 2 ), which has an insulating area ( 5 ) and with a sealing arrangement, wherein in the sealing arrangement at least one screw ( 13 ) of claims 1 to 11 is introduced. Insulating glass unit ( 1 ) according to claim 13, characterized in that the screw ( 13 ) is used to seal a filling opening and / or vent in the seal assembly. Insulating glass unit ( 1 ) according to claim 13 or 14, characterized in that the screw ( 13 ) for fixing a design or functional component in the insulating region ( 5 ) is used. Insulating glass unit ( 1 ) according to claim 15, characterized by sprouts ( 12a , b) as a design component and / or by a Venetian blind arrangement as a functional component and / or by a solar module as a functional component. Insulating glass unit ( 1 ) according to one of the preceding claims, characterized the sealing arrangement, in particular the edge bond, has an edge profile ( 3 ), which of the screw ( 13 ) is penetrated and which forms part of a primary seal, in particular primary seal plane. Insulating glass unit ( 1 ) according to claim 17, characterized in that the length of the shaft ( 17 ) greater than the thickness (D) of the spacing profile ( 3 ). Insulating glass unit ( 1 ) according to claim 17 or 18, characterized by a secondary seal ( 10 ), which on one of the insulating area ( 5 ) facing away ( 9 ) of the distance profile ( 3 ) is arranged and which the screw head ( 15 ) of the screw ( 13 ) covers. Insulating glass unit according to claim 19, characterized in that the secondary seal ( 10 ) is applied as a shapeless mass, in particular from hotmelt, silicone, polyurethane or polysulphide. Device for mounting screws ( 13 ) according to one of claims 1 to 11 in an insulating glass unit according to one of claims 12 to 19, characterized in that the device without conversion with screws ( 13 ) according to the preceding claims and with standard screws of the same length and the same screw head diameter is usable.