CA2148376A1 - Profiled elements with a connector constructed as a crew - Google Patents
Profiled elements with a connector constructed as a crewInfo
- Publication number
- CA2148376A1 CA2148376A1 CA002148376A CA2148376A CA2148376A1 CA 2148376 A1 CA2148376 A1 CA 2148376A1 CA 002148376 A CA002148376 A CA 002148376A CA 2148376 A CA2148376 A CA 2148376A CA 2148376 A1 CA2148376 A1 CA 2148376A1
- Authority
- CA
- Canada
- Prior art keywords
- screw
- profiled elements
- drilling
- length
- threaded portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000005553 drilling Methods 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 description 4
- 101000800807 Homo sapiens Tumor necrosis factor alpha-induced protein 8 Proteins 0.000 description 2
- 102100033649 Tumor necrosis factor alpha-induced protein 8 Human genes 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 241001505295 Eros Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/56—Fastening frames to the border of openings or to similar contiguous frames
- E06B1/60—Fastening frames to the border of openings or to similar contiguous frames by mechanical means, e.g. anchoring means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/02—Base frames, i.e. template frames for openings in walls or the like, provided with means for securing a further rigidly-mounted frame; Special adaptations of frames to be fixed therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Of Plates (AREA)
- Joining Of Building Structures In Genera (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Dowels (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
A screw (3) is used to join two profiled elements (1, 2). The screw has a drilling part (4), a thread part (5), an unthreaded shank section (15) and a screw head (7). The sum (S) of the length (B) of the drilling part (4) and the length (G) of the thread part (5) is equal to or less than the clearance (W) between two webs (10, 11), following one after the other in the drilling/screw-in direction, of the profiled elements (1, 2) to be joined together.
Thus, the process of drilling into web (11) does not begin until the thread part (5) has already exited web (10).
Thus, the process of drilling into web (11) does not begin until the thread part (5) has already exited web (10).
Description
-`! 214~37~
SFS 12.626 ;;
., . ' ,.
. .
~pplicant SFS Industrie Holdin~ AG, ~feerbrl~gg (S~ z~rl~nd) ~ . .
Object: P:~OFIIJED :ELEI~ENTS WITH ~ CONNECTO~ ` ~ :.
CONSTI~UCTED ~S ~ SCREW ..
, . .
Our ref.: PO 106WO ...
The invention relates to profiled elements with a connector constructed as a serew, hvo or more profiled elements or assembly parts and one or more profiled elements being connected together with a~ sorew consisting of a drilling part, a shaft provided at least :~.
over a portion of its length with a threaded portion and a screw head. Profiled .
elements, such as hollow aluminum profiles, other hollow metal profiles or profiles -:
with proJecting cross members are frequently used particularly in window, door, partitlon and facade construction, these profiled elements and, optionally, additional ~ .-assembly parts having to be connected firmly to one another. Previously, at sites `
intended for a connector, holes ~were pre-drilled, into which then either a thread was ~ :.
cut and the screw inserted or a self-cutting screw, ;such as a self-tapping screw, was .
screwed~
The mutual fastening of such profiled elements and, optionally, additional assembly , parts was therefore characterized by an enormous expenditure of work, since at least two sequences o~ operations (drilling and screwing in the screw) were necess~y. In i .
addition, when the screws were screwed in subsequently, the~problem arose that it was hardly possible to press the~profiled~elernents~or the additional assembly parts, which are to be connected to one~ another, firmly agalnst one anotber, since the threaded portions of the screw in each case have;engaged two or more cross members or wall .
parts.
~: ~ . AM~ENDED PAG.F
.
SFS 12.626 ;;
., . ' ,.
. .
~pplicant SFS Industrie Holdin~ AG, ~feerbrl~gg (S~ z~rl~nd) ~ . .
Object: P:~OFIIJED :ELEI~ENTS WITH ~ CONNECTO~ ` ~ :.
CONSTI~UCTED ~S ~ SCREW ..
, . .
Our ref.: PO 106WO ...
The invention relates to profiled elements with a connector constructed as a serew, hvo or more profiled elements or assembly parts and one or more profiled elements being connected together with a~ sorew consisting of a drilling part, a shaft provided at least :~.
over a portion of its length with a threaded portion and a screw head. Profiled .
elements, such as hollow aluminum profiles, other hollow metal profiles or profiles -:
with proJecting cross members are frequently used particularly in window, door, partitlon and facade construction, these profiled elements and, optionally, additional ~ .-assembly parts having to be connected firmly to one another. Previously, at sites `
intended for a connector, holes ~were pre-drilled, into which then either a thread was ~ :.
cut and the screw inserted or a self-cutting screw, ;such as a self-tapping screw, was .
screwed~
The mutual fastening of such profiled elements and, optionally, additional assembly , parts was therefore characterized by an enormous expenditure of work, since at least two sequences o~ operations (drilling and screwing in the screw) were necess~y. In i .
addition, when the screws were screwed in subsequently, the~problem arose that it was hardly possible to press the~profiled~elernents~or the additional assembly parts, which are to be connected to one~ another, firmly agalnst one anotber, since the threaded portions of the screw in each case have;engaged two or more cross members or wall .
parts.
~: ~ . AM~ENDED PAG.F
.
2:1~837~
) It is therefore an object of the present invention to provide particularly for this special use a screw, with which the hole is drilled, the thread cut and the necessaly contacting fiorce between the profiled elements and assembly parts, w}lich are to be connected to one another, achieved in an optimum manner Pursuant to the invention, it is proposed that, for accomplishing this objective, the sum of the length of the drilling part and the length of the threaded portion of the screw is the same as or less than the clear distance between two cross members or wall parts, following one another in the drilling or screwing direction, of one or rnore profiled elements and, optionally, assembly parts, which are to be cor~nected to one another or ~.~
the length of the drilling part of the screw i5 equal to or larger than the sum of the i:
clear distance between two cross members or wall parts of the profiled elements and, optionally, of assem~ly parts, which are to be connected to one another and~
:follow one another in the drilling or screwing direction~ and the thickness of the two cross members or wall parts following one another, ~;~ o and the length of th~ threaded portion corresponds to 1.5 times to 4 times the thicl~ness of the cross ~member or wall part, which: is engaged by the threaded portlon as a fastening element. ~ ~ -~ :
By~rheans of thèse in~entlve measures, it is achieved, on the one hand, that thethreaded portion does not engage a~ cross member or wall palt during the drilling : process. This :is: of importance;particularly because the drilling ;advance usually is significasltly less than the;advance when:s thread~engages a corresponding part. On the~other hand, the possib~ is~crèated~of being able to drill througll consecutive .~
MENDED P~G~
.
21~837~ ` ~
-, cross metnbers or wall parts relatively rapidly, since the threaded portion, which must be turned through the corresponding cross member or wall part after a drilling procedure, is very short.
The screw is aligned correspondingly axially true in the first cross member or wall part that is to be drilled~ so that it becomes possible to apply it accurately already when the drilling part enters the next cross member or the next wall part.
A reinfiorced struchlre has already becorne known (WO 8gi12722), which is constructed in lattice fashion and serves for the production of concrete slabs. This rein~orcing structure consists of two flat cross members of equal width, which are spaced apart, and of lattice rods, which are welded laterally to ehe flat cross members, connecting them. The flat cross members are removed so far from ~he formwork panels intended for pouring out the concrete, that the concrete can envelop the flat cros~ mernbers. The presence of these flat cross members is utilized here in order to fastert the ~ormwork panels to these reinforced structures. For this purpose, a fastening element in the forrrl of a screw is used, which passes through the ~ormwork panel arld engages with a threaded section the flat cross member of the reinforced structure. In this connection, care is talcen to ensure that the threaded section has already passed through the ~ormwork panel when the drilling process is commenced by the screw in the flat cross member. The length of the screw is dealt with generously here, particularly since problems cannot arlse in the case of such an application wlth w~lls or assembly parts following one ancther at relatively short inter~als.
The number of cross members or wall parts, through which a single screw passes, therefore does not matter in the case of the present invention since, in the elld, i$ is always ensured that the thread~ has the necessary engagement only with that cross member or wall part, whieh is intended to be engaged by the threaded portion. The Al~l~NDED P~GE
21~ ~ 3 ~ ~
contacting force, required between the profiled elements or the profiled elements and the assembly parts, which are to be connected, can be attained by maintaining anappropriate tightening torque. Particularly by this special adaptation o~ a connector for , a very speeific use, significant advantages are achieved in the work of producing .
windows, doors, partitions and facades. Owing to the fact that pre-drilling is omitted, it is not necessary to assure the relative positions accurately during each. driLling :~
process, so that the holes will also be ahgned subsequently for screwirlg in the screw. -:
By means of the inventive measures, an essentially more rational: and thus also less expensive connector between two or more profiled elements and, optionally, additlonal assembly parts has become posslble. It is entirely clear that, ~or each special construction of profiled elements and, optionally, of assembly parts, dif~erent lengths . -and varîations with respect to the threaded portion and the drllling part are necessary.
Howe~rer,~ particularly by adhering to the inventive rneasures, a relativeb large range of`.~.
:: uses can be coYered already with a reasonable number of variations.
:: : . : :
Cross members and wall parts of such profiled elements or of assembly parts that are ..
to be fastened usually are relatively thin. Only an appropriate: thread need therefore be ; present,~ which engages this cross:member or wall part properly. It is therefore ~ .
proposed that the length of the threaded~portion be 1.5 ~tlmes to 4 times the thickness of ~
, .
(cQntinued:on page 4 Of the ongmal specification) ~
....
`C~I-9435 ~Heerbn~gg, December 5, 1~994 : ` ~ SFS Industrie Holding AG: :
:: Hans I,udescher Manager of Patent Department -.
AM~NDED PAeE
2 ~ 3 7 ~ ,, the cross member or wall pare, which is engaged by the threaded portion as the fastening element.
It is ~rtherrnore proposed that a thread-free section of shaft be provided between the threaded portion immediately adjoining the drilling part and the screw head. Therequired lateral securing of the profiled elements or assembly parts, which are to be .;
connected together, is also assured by a smooth, thread-free section of shaft~ since this section of shaf~j af~er an approximate fit, engages the boreholes produced by the screw :
itself, the threads, already cut into these cross members, not having any negative effect -.
whatsoever for such a lateral support. .`
:' The fact that the diarneter of thé thread-free section of the shaf~ corresponds -.
approximately to the diameter of the~drilling part also contributes to this.
.
Furthermore, it is proposed that the length of the sh:aft section of the screw between the underside of thc screw head up to the center relative to~the length of the thr,eaded portion corresponds to the distance between the support of the screw head and the ~center of the thickness of that cross member or wall p~t, in which the threaded p,~t is arlchored after the seating procedure. A special adaptation to a p,~ticul~ connection bctwcen two or more profiled elements or between assembly parts ~nd one or more profiled elements is thus possible. The~ seating procedure thus is facilitated significantly, the mutuaily firm bracing of the~ paJts to be connected becornes possible an~ ly one sequencc of operatlons is required.
It is only~necess~y to screw in the scrcw once9 an optimum tightening ~orce b~ing attained by switching off the torque of the screwdriver appropriately.
:
:: : :
.
21~376 ~ . ...
Already merely by screwing in such a screw, the individual operating steps, carried out by this single screw (drilling/turning the thread through the hole, drilling/turning the thread through the hole, etc.) are precisely audible, depending on the number of cross - .
members or wall parts that have to be drilled. The user of an inventive connector thus has the possibility of an additional control by hearlng, because the individual, .:
consecutive steps of the operation and the ~Inal torque-dependent switching off of the ~.
screwdriver can be percei~ted. .-Further inventive features and particular advantages are explained in greater detall in the followmg description by means of tlle drawing, in which Figure 1 shows a screw, which is to be turned through two cross members of profiled eiements, ~ ``
,"',:
Figure 2 shows a plan view of the head of the screw, : ~:
.' '"
Figure 3 shows an example of the use of such a screw for connecting three profiled elements, ~ ~ .
Figure 4 shows an embodirnent, also in section, from which a connector between two : .
profiled elements can~be seen, it being possible~for the second profiled element to be constructed also as an assembly part and . i;~
;: Flgure: 5 to Figure 9 show an excerpt from various structural variations of a screw fior : u se: as a connector~ between profiled elements and, optionally, assembb j;
parts.
: ~ : : : 5 ~
, ,~, : :
.~ ., ..
21~337G
. ;:
-.
For connectillg two or more profiled elements 1, 2, a screw 3 is provided, which has a drilling part 4, a sha~t 6 provided at least partially over its length with a threaded -. portion 5 and a screw head 7. Advisab3y, the screw head 7 is provided with a special engagement opening 8, so that the screw can be screwed in with its ~xis aligned precisely with that of the screwdriver. -For the inventive use of such a connector, special fundamental dimensions must be provided on the screw 3. Accordingly, the sum S of the length B of the drilling part 4 and the length G of the threaded portion 5 is equal to or less than the clear distance W
between two cross members 10, I l or corresponding wall parts following one another . :
in the drilling or screwing-in direction 9. Such a screw can be used, for example, for an application similar to that shown in Figure 3. The two profiled elements I and 2 are to be fastened here eO opposite regions of a third profile 12. It can be seen clearly here that the sum S of the lengths B and G is equal to or less than the clear distance W
betweeri consecutive cross members or between the cross member I I and the inserted cross rnember 13 of the profile 12. In each case, when the threaded portion 5 has passed through the one cross member 10, that is, when the top thread facing the screw head 7 lea~es this cross member 10, the drilling process in the next cross member commences, so that there is never a forced, larger advallce of the drill, which could be Initiated by a still-engaged thread. ;A clean borehole Is therefore always possible and, a¢cor~ingly, there is also never any damage to the threaded portion 5. Especiaily this non-damaging effect on the threaded portion S is of particular advantage because the threa~ed portion, afte~ ai17 cuts a thread into two or more crossimernbers or wall par~s`
and then, in the last of these cross members of wall parts, once again must ~orm a proper thread, in which the thread portion S can then transfer an approp~iately large tightening torque. ~ - .
:
' 2 1 ~ 8 ~ 7 ~
., . .
The thread 14, remaining behind in the respectively drilled cross members 10, does not in any way interfere, since a thread-firee section of shaft 15, which is provided between the screw head 7 and the threaded portion 5, comes to lie against the walls of the boreholes.
'' '`
So that a proper engagement of the thread 5 in the cross member 10, 11, 13, finally provided for this purpose, becornes possible, the threaded portion 5 advisably has a length G, which corresponds to 1.5 times to 4 times the thiclcness of the cross member 10, 11, 13, which is engaged by the threaded~portion 5 as fastening element. By these mèans it is ensured that a sufficient section of thread is still present above and below `the corresponding c.ross member 10, 11 or 13. In order to achieve a particularly short construction of the screw 3 especially in the region o the drilling part 4 ~and the threaded portion S, the threaded portiorl S is advantageously constructed to adjoin the drilling portion 4 directly, so that, depending on ~:he overall length of the screw 3, a ;; ..
correspondingly long, thread-free section 15 of shaft results on the screw shaft 6. The .;
diarneter of the thread-free section 15 of shaft corresponds at least approximately to , i;
the diameter of the drilling part 4. ~s a result, it is possible to turn this thread-free section 15~ of the shaft without any special frictional problems in the~ already prepared ;~ .
boreholes that are provided wlth~ a thread.
~ .
As is evident particularly from Flgure 3 and also from the examples; of Figure 7 to 9, the length E of the shaft seetion of the screw between the ondersido 16 of the screw head TP to the center based on the length G~of~the th;resded portion ~S c,orresponds t~
the distance A from the support ~l 7 of the screw head 7 and the center of the thickness D2 of each cross member 13,~ in; which the threaded portion 5 is finally anehored af~er the seahng process. It is thus necessary to match these screws relatively accurately to the profiled elements~ or profiled~ elements~ and assembly parts, which are to be~ r`
~ 7~ ~
2~3~
connected to one another. However, it is possible to manage over large ranges with various structural variations.
For a second speciaT structural variation of a screw connecting two profilled elernents or assernbly parts and one profiled element, the clear distance W between two consecutive cross members 10 and 11 is relatively small. Such a structural variation can be inferred from Figure 4 and from the posslbilities of Figures 6 and 7. The clear distance W is so small here, that it would be impossible, for an appropriate holding -~orce of the screw that is to be used, to keep the sum S of ~the length of the drilling part and the length of the threaded portion smaller than:this clear distance W. In such a cæe, it is proposed that the l~ngth B of the drilling part 4 be equal to or larger than the sum D3 of the clear distance W between two cross members 10, 11, ~ollowing one another In the screwing direction, and of the thickness Dl and D2 of the two consecutive cross members 10, 11. In this case, cross;rnember 10 as well as cross member 11 are drilled first, before the threaded portion 5 flrst engages cross member 10 and subsequently cross member 11, the threaded portion ~, during the last rotations ~o~ the screw 3, being in engagement only with the cross member 11 and no lor~ger with the:eross member 10. ~n appropriate tightening torque:and, with that, a mutual contacting force between the profiled elements, whlch~are to be connected to oneanother, is thereforc also possible in this manner.
Such a variation presupposes that the caYity 18, adjoining the cross member 11 or a co~re~pondin~s wall section,~ is suf~lciently large so that there ls space for the drillin~
part 4 and the first section of the threaded portion 5, without the dritling part 4 already coming up against a next cross member. ~
, -8 ~:-~ . :
, 211~37f~ ~
....
...
.
lndividual solutions for all types of connections between two or more profiled .`--.
elements or between assembly palts and profiled elements are thus possible. The . .
.....
screw must be matched to these di~erent variations and the specified conditions haYe . .
to be adhered to in each case. It is obvious that~ beyond this, different variational :
deviations are conceivable, for example, in relation to the construction of the drilling part, the threaded portion or the thread-free section of shaft or also in relation to the screw head and the special engagement. An appropriate overa~l length of drilling part ..
. .
and threaded portion or an appropriate length of the drilling pare by Itself must always . -.
be aYailable, a shorter or longer thread-free section :of shaft being available depending . `
on the intended use. ~
-,~
The inventive connector can be used for profiled elements and assembly parts o~
aluminum as well as for other rnetal profiles or ssembly parts. Of course, screws with ` ;~
the i~nventive measures can also be used for plastic profiled elernents and assembly parts. In this connection, it does not matter whether the profiled elements are strictly ;.;~.
plastic profiied elernents or plastic profiled elements into which metai profiles have been inserted for reinforcementA~
For the examples shown, the screws have in each case been screwed in a~ rlght~angies to the plane of individual cross members or wall pa~ts. It: is also concelvable that such ~
screws are. used: for speciai purposes in profiled elernents or assembly parts at an acute ; ~, angle to the :cross members 10, 11 or 13. This is readily possible with the inventive const~uction of alsqrew.
''' 9 ~ .
) It is therefore an object of the present invention to provide particularly for this special use a screw, with which the hole is drilled, the thread cut and the necessaly contacting fiorce between the profiled elements and assembly parts, w}lich are to be connected to one another, achieved in an optimum manner Pursuant to the invention, it is proposed that, for accomplishing this objective, the sum of the length of the drilling part and the length of the threaded portion of the screw is the same as or less than the clear distance between two cross members or wall parts, following one another in the drilling or screwing direction, of one or rnore profiled elements and, optionally, assembly parts, which are to be cor~nected to one another or ~.~
the length of the drilling part of the screw i5 equal to or larger than the sum of the i:
clear distance between two cross members or wall parts of the profiled elements and, optionally, of assem~ly parts, which are to be connected to one another and~
:follow one another in the drilling or screwing direction~ and the thickness of the two cross members or wall parts following one another, ~;~ o and the length of th~ threaded portion corresponds to 1.5 times to 4 times the thicl~ness of the cross ~member or wall part, which: is engaged by the threaded portlon as a fastening element. ~ ~ -~ :
By~rheans of thèse in~entlve measures, it is achieved, on the one hand, that thethreaded portion does not engage a~ cross member or wall palt during the drilling : process. This :is: of importance;particularly because the drilling ;advance usually is significasltly less than the;advance when:s thread~engages a corresponding part. On the~other hand, the possib~ is~crèated~of being able to drill througll consecutive .~
MENDED P~G~
.
21~837~ ` ~
-, cross metnbers or wall parts relatively rapidly, since the threaded portion, which must be turned through the corresponding cross member or wall part after a drilling procedure, is very short.
The screw is aligned correspondingly axially true in the first cross member or wall part that is to be drilled~ so that it becomes possible to apply it accurately already when the drilling part enters the next cross member or the next wall part.
A reinfiorced struchlre has already becorne known (WO 8gi12722), which is constructed in lattice fashion and serves for the production of concrete slabs. This rein~orcing structure consists of two flat cross members of equal width, which are spaced apart, and of lattice rods, which are welded laterally to ehe flat cross members, connecting them. The flat cross members are removed so far from ~he formwork panels intended for pouring out the concrete, that the concrete can envelop the flat cros~ mernbers. The presence of these flat cross members is utilized here in order to fastert the ~ormwork panels to these reinforced structures. For this purpose, a fastening element in the forrrl of a screw is used, which passes through the ~ormwork panel arld engages with a threaded section the flat cross member of the reinforced structure. In this connection, care is talcen to ensure that the threaded section has already passed through the ~ormwork panel when the drilling process is commenced by the screw in the flat cross member. The length of the screw is dealt with generously here, particularly since problems cannot arlse in the case of such an application wlth w~lls or assembly parts following one ancther at relatively short inter~als.
The number of cross members or wall parts, through which a single screw passes, therefore does not matter in the case of the present invention since, in the elld, i$ is always ensured that the thread~ has the necessary engagement only with that cross member or wall part, whieh is intended to be engaged by the threaded portion. The Al~l~NDED P~GE
21~ ~ 3 ~ ~
contacting force, required between the profiled elements or the profiled elements and the assembly parts, which are to be connected, can be attained by maintaining anappropriate tightening torque. Particularly by this special adaptation o~ a connector for , a very speeific use, significant advantages are achieved in the work of producing .
windows, doors, partitions and facades. Owing to the fact that pre-drilling is omitted, it is not necessary to assure the relative positions accurately during each. driLling :~
process, so that the holes will also be ahgned subsequently for screwirlg in the screw. -:
By means of the inventive measures, an essentially more rational: and thus also less expensive connector between two or more profiled elements and, optionally, additlonal assembly parts has become posslble. It is entirely clear that, ~or each special construction of profiled elements and, optionally, of assembly parts, dif~erent lengths . -and varîations with respect to the threaded portion and the drllling part are necessary.
Howe~rer,~ particularly by adhering to the inventive rneasures, a relativeb large range of`.~.
:: uses can be coYered already with a reasonable number of variations.
:: : . : :
Cross members and wall parts of such profiled elements or of assembly parts that are ..
to be fastened usually are relatively thin. Only an appropriate: thread need therefore be ; present,~ which engages this cross:member or wall part properly. It is therefore ~ .
proposed that the length of the threaded~portion be 1.5 ~tlmes to 4 times the thickness of ~
, .
(cQntinued:on page 4 Of the ongmal specification) ~
....
`C~I-9435 ~Heerbn~gg, December 5, 1~994 : ` ~ SFS Industrie Holding AG: :
:: Hans I,udescher Manager of Patent Department -.
AM~NDED PAeE
2 ~ 3 7 ~ ,, the cross member or wall pare, which is engaged by the threaded portion as the fastening element.
It is ~rtherrnore proposed that a thread-free section of shaft be provided between the threaded portion immediately adjoining the drilling part and the screw head. Therequired lateral securing of the profiled elements or assembly parts, which are to be .;
connected together, is also assured by a smooth, thread-free section of shaft~ since this section of shaf~j af~er an approximate fit, engages the boreholes produced by the screw :
itself, the threads, already cut into these cross members, not having any negative effect -.
whatsoever for such a lateral support. .`
:' The fact that the diarneter of thé thread-free section of the shaf~ corresponds -.
approximately to the diameter of the~drilling part also contributes to this.
.
Furthermore, it is proposed that the length of the sh:aft section of the screw between the underside of thc screw head up to the center relative to~the length of the thr,eaded portion corresponds to the distance between the support of the screw head and the ~center of the thickness of that cross member or wall p~t, in which the threaded p,~t is arlchored after the seating procedure. A special adaptation to a p,~ticul~ connection bctwcen two or more profiled elements or between assembly parts ~nd one or more profiled elements is thus possible. The~ seating procedure thus is facilitated significantly, the mutuaily firm bracing of the~ paJts to be connected becornes possible an~ ly one sequencc of operatlons is required.
It is only~necess~y to screw in the scrcw once9 an optimum tightening ~orce b~ing attained by switching off the torque of the screwdriver appropriately.
:
:: : :
.
21~376 ~ . ...
Already merely by screwing in such a screw, the individual operating steps, carried out by this single screw (drilling/turning the thread through the hole, drilling/turning the thread through the hole, etc.) are precisely audible, depending on the number of cross - .
members or wall parts that have to be drilled. The user of an inventive connector thus has the possibility of an additional control by hearlng, because the individual, .:
consecutive steps of the operation and the ~Inal torque-dependent switching off of the ~.
screwdriver can be percei~ted. .-Further inventive features and particular advantages are explained in greater detall in the followmg description by means of tlle drawing, in which Figure 1 shows a screw, which is to be turned through two cross members of profiled eiements, ~ ``
,"',:
Figure 2 shows a plan view of the head of the screw, : ~:
.' '"
Figure 3 shows an example of the use of such a screw for connecting three profiled elements, ~ ~ .
Figure 4 shows an embodirnent, also in section, from which a connector between two : .
profiled elements can~be seen, it being possible~for the second profiled element to be constructed also as an assembly part and . i;~
;: Flgure: 5 to Figure 9 show an excerpt from various structural variations of a screw fior : u se: as a connector~ between profiled elements and, optionally, assembb j;
parts.
: ~ : : : 5 ~
, ,~, : :
.~ ., ..
21~337G
. ;:
-.
For connectillg two or more profiled elements 1, 2, a screw 3 is provided, which has a drilling part 4, a sha~t 6 provided at least partially over its length with a threaded -. portion 5 and a screw head 7. Advisab3y, the screw head 7 is provided with a special engagement opening 8, so that the screw can be screwed in with its ~xis aligned precisely with that of the screwdriver. -For the inventive use of such a connector, special fundamental dimensions must be provided on the screw 3. Accordingly, the sum S of the length B of the drilling part 4 and the length G of the threaded portion 5 is equal to or less than the clear distance W
between two cross members 10, I l or corresponding wall parts following one another . :
in the drilling or screwing-in direction 9. Such a screw can be used, for example, for an application similar to that shown in Figure 3. The two profiled elements I and 2 are to be fastened here eO opposite regions of a third profile 12. It can be seen clearly here that the sum S of the lengths B and G is equal to or less than the clear distance W
betweeri consecutive cross members or between the cross member I I and the inserted cross rnember 13 of the profile 12. In each case, when the threaded portion 5 has passed through the one cross member 10, that is, when the top thread facing the screw head 7 lea~es this cross member 10, the drilling process in the next cross member commences, so that there is never a forced, larger advallce of the drill, which could be Initiated by a still-engaged thread. ;A clean borehole Is therefore always possible and, a¢cor~ingly, there is also never any damage to the threaded portion 5. Especiaily this non-damaging effect on the threaded portion S is of particular advantage because the threa~ed portion, afte~ ai17 cuts a thread into two or more crossimernbers or wall par~s`
and then, in the last of these cross members of wall parts, once again must ~orm a proper thread, in which the thread portion S can then transfer an approp~iately large tightening torque. ~ - .
:
' 2 1 ~ 8 ~ 7 ~
., . .
The thread 14, remaining behind in the respectively drilled cross members 10, does not in any way interfere, since a thread-firee section of shaft 15, which is provided between the screw head 7 and the threaded portion 5, comes to lie against the walls of the boreholes.
'' '`
So that a proper engagement of the thread 5 in the cross member 10, 11, 13, finally provided for this purpose, becornes possible, the threaded portion 5 advisably has a length G, which corresponds to 1.5 times to 4 times the thiclcness of the cross member 10, 11, 13, which is engaged by the threaded~portion 5 as fastening element. By these mèans it is ensured that a sufficient section of thread is still present above and below `the corresponding c.ross member 10, 11 or 13. In order to achieve a particularly short construction of the screw 3 especially in the region o the drilling part 4 ~and the threaded portion S, the threaded portiorl S is advantageously constructed to adjoin the drilling portion 4 directly, so that, depending on ~:he overall length of the screw 3, a ;; ..
correspondingly long, thread-free section 15 of shaft results on the screw shaft 6. The .;
diarneter of the thread-free section 15 of shaft corresponds at least approximately to , i;
the diameter of the drilling part 4. ~s a result, it is possible to turn this thread-free section 15~ of the shaft without any special frictional problems in the~ already prepared ;~ .
boreholes that are provided wlth~ a thread.
~ .
As is evident particularly from Flgure 3 and also from the examples; of Figure 7 to 9, the length E of the shaft seetion of the screw between the ondersido 16 of the screw head TP to the center based on the length G~of~the th;resded portion ~S c,orresponds t~
the distance A from the support ~l 7 of the screw head 7 and the center of the thickness D2 of each cross member 13,~ in; which the threaded portion 5 is finally anehored af~er the seahng process. It is thus necessary to match these screws relatively accurately to the profiled elements~ or profiled~ elements~ and assembly parts, which are to be~ r`
~ 7~ ~
2~3~
connected to one another. However, it is possible to manage over large ranges with various structural variations.
For a second speciaT structural variation of a screw connecting two profilled elernents or assernbly parts and one profiled element, the clear distance W between two consecutive cross members 10 and 11 is relatively small. Such a structural variation can be inferred from Figure 4 and from the posslbilities of Figures 6 and 7. The clear distance W is so small here, that it would be impossible, for an appropriate holding -~orce of the screw that is to be used, to keep the sum S of ~the length of the drilling part and the length of the threaded portion smaller than:this clear distance W. In such a cæe, it is proposed that the l~ngth B of the drilling part 4 be equal to or larger than the sum D3 of the clear distance W between two cross members 10, 11, ~ollowing one another In the screwing direction, and of the thickness Dl and D2 of the two consecutive cross members 10, 11. In this case, cross;rnember 10 as well as cross member 11 are drilled first, before the threaded portion 5 flrst engages cross member 10 and subsequently cross member 11, the threaded portion ~, during the last rotations ~o~ the screw 3, being in engagement only with the cross member 11 and no lor~ger with the:eross member 10. ~n appropriate tightening torque:and, with that, a mutual contacting force between the profiled elements, whlch~are to be connected to oneanother, is thereforc also possible in this manner.
Such a variation presupposes that the caYity 18, adjoining the cross member 11 or a co~re~pondin~s wall section,~ is suf~lciently large so that there ls space for the drillin~
part 4 and the first section of the threaded portion 5, without the dritling part 4 already coming up against a next cross member. ~
, -8 ~:-~ . :
, 211~37f~ ~
....
...
.
lndividual solutions for all types of connections between two or more profiled .`--.
elements or between assembly palts and profiled elements are thus possible. The . .
.....
screw must be matched to these di~erent variations and the specified conditions haYe . .
to be adhered to in each case. It is obvious that~ beyond this, different variational :
deviations are conceivable, for example, in relation to the construction of the drilling part, the threaded portion or the thread-free section of shaft or also in relation to the screw head and the special engagement. An appropriate overa~l length of drilling part ..
. .
and threaded portion or an appropriate length of the drilling pare by Itself must always . -.
be aYailable, a shorter or longer thread-free section :of shaft being available depending . `
on the intended use. ~
-,~
The inventive connector can be used for profiled elements and assembly parts o~
aluminum as well as for other rnetal profiles or ssembly parts. Of course, screws with ` ;~
the i~nventive measures can also be used for plastic profiled elernents and assembly parts. In this connection, it does not matter whether the profiled elements are strictly ;.;~.
plastic profiied elernents or plastic profiled elements into which metai profiles have been inserted for reinforcementA~
For the examples shown, the screws have in each case been screwed in a~ rlght~angies to the plane of individual cross members or wall pa~ts. It: is also concelvable that such ~
screws are. used: for speciai purposes in profiled elernents or assembly parts at an acute ; ~, angle to the :cross members 10, 11 or 13. This is readily possible with the inventive const~uction of alsqrew.
''' 9 ~ .
Claims (4)
1. Profiled elements with a connector constructed as a screw, two or more profiled elements or assembly parts and one or more profiled elements being connected together with a screw (3) consisting of a drilling part (4), a shaft (6) provided over at least a portion of its length with a threaded portion (5) and ascrew head (7), characterized in that ? the sum (S) of the length (B) of the drilling part (4) and the length (G) of the threaded portion (5) of the screw (3) is the same as or less than the clear distance (W) between two cross members (10, 11, 13) or wall parts, following one another in the drilling or screwing direction, of one or more profiled elements (1, 2, 12) and, optionally, assembly parts, which are to be connected to one another or ? the length (B) of the drilling part (4) of the screw (3) is equal to or larger than the sum (D3) of the clear distance (W) between two cross members (10, 11) or wall parts of the profiled elements (1, 2) and, optionally, of assembly parts, which are to be connected to one another and follow one another in the drilling or screwing direction (9), and the thickness (D1, D2) of the two cross members (10,11) or wall parts following one another, ? the length (G) of the threaded portion (5) corresponds to 1.5 times to 4 times the thickness of the cross member (10, 11) or wall part, which is engaged by the threaded portion (5) as a fastening element.
2. Profiled elements of claim 1, characterized in that a thread-free section (15) of shaft is provided between the threaded portion immediately adjoining the drilling part (4) and the screw head (7).
3. The profiled elements of claim 1, characterized in that the diameter of the thread-free section (15) of the sahft corresponds at least approximately to the diameter of the drilling part (4).
4. The profiled elements of claim 1 and/or one of the claims 2 to 3, characterized in that the length (E) of the shaft section of the screw (3) between the underside (16) of the screw head (7) and the center related to the length (G) of the threaded portion (5) corresponds to the distance (A) from the support (17) of the screw head (7) up to the center of the thickness (D2) of that particular cross member (10, 11, 13) or wall part, in which the threaded portion is anchored after the seating process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4237019A DE4237019C2 (en) | 1992-11-02 | 1992-11-02 | Connection between two or more profile elements or between assembly parts and one or more profile elements |
| DEP4237019.1 | 1992-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2148376A1 true CA2148376A1 (en) | 1994-05-11 |
Family
ID=6471945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002148376A Abandoned CA2148376A1 (en) | 1992-11-02 | 1993-10-29 | Profiled elements with a connector constructed as a crew |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0666965B1 (en) |
| JP (1) | JPH08502577A (en) |
| AT (1) | ATE153741T1 (en) |
| AU (1) | AU5440594A (en) |
| CA (1) | CA2148376A1 (en) |
| DE (2) | DE4237019C2 (en) |
| WO (1) | WO1994010460A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19616533C2 (en) * | 1996-04-25 | 1999-04-22 | Sfs Ind Holding Ag | Adjustment device for a building structure that can be inserted into a building opening, e.g. a window or door frame |
| DE29617847U1 (en) * | 1996-10-14 | 1996-11-28 | Sfs Industrie Holding Ag, Heerbrugg | Screw for fastening workpieces |
| DE20018425U1 (en) * | 2000-10-27 | 2002-03-07 | Sfs Ind Holding Ag Heerbrugg | Screw for anchoring a hollow profile to a substructure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1253544A (en) * | 1968-05-04 | 1971-11-17 | Gkn Screws Fasteners Ltd | Tamper-proof screw |
| IE37992B1 (en) * | 1971-03-31 | 1977-12-07 | Lloyd R | Improvements in joinery |
| FR2139717B1 (en) * | 1971-06-01 | 1973-05-25 | Cercelet Andre | |
| US3998019A (en) * | 1975-08-18 | 1976-12-21 | Illinois Tool Works Inc. | Roof panel fastener and joint construction |
| AT380732B (en) * | 1984-12-21 | 1986-06-25 | Sfs Stadler Ag | SCREW FOR FASTENING ROOF OR WALL CLADDING ELEMENTS OF PROFILED PANELS AND INSULATING LAYER UNDER THEREOF ON A FIXED BASE |
| WO1989012722A1 (en) * | 1988-06-20 | 1989-12-28 | Franz Bucher | Reinforcing formed body and formwork panel elements made using said body |
| DE4112591C1 (en) * | 1991-04-17 | 1992-08-27 | Sfs Stadler Holding Ag, Heerbrugg, Ch |
-
1992
- 1992-11-02 DE DE4237019A patent/DE4237019C2/en not_active Expired - Fee Related
-
1993
- 1993-10-29 WO PCT/EP1993/003016 patent/WO1994010460A1/en not_active Application Discontinuation
- 1993-10-29 EP EP93924545A patent/EP0666965B1/en not_active Revoked
- 1993-10-29 CA CA002148376A patent/CA2148376A1/en not_active Abandoned
- 1993-10-29 JP JP6510707A patent/JPH08502577A/en active Pending
- 1993-10-29 DE DE59306614T patent/DE59306614D1/en not_active Revoked
- 1993-10-29 AU AU54405/94A patent/AU5440594A/en not_active Abandoned
- 1993-10-29 AT AT93924545T patent/ATE153741T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AU5440594A (en) | 1994-05-24 |
| JPH08502577A (en) | 1996-03-19 |
| DE59306614D1 (en) | 1997-07-03 |
| ATE153741T1 (en) | 1997-06-15 |
| WO1994010460A1 (en) | 1994-05-11 |
| EP0666965B1 (en) | 1997-05-28 |
| DE4237019A1 (en) | 1994-05-05 |
| EP0666965A1 (en) | 1995-08-16 |
| DE4237019C2 (en) | 1997-02-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |