DE1901533A1 - Duebel - Google Patents

Description

Dip *. lng.Fr. Thalmann
Dtp ». Ing, M. Sohmltt

PNeteYttafWawiej #

7 · Freiburg I. Brag.

~ > 9k TmLUUi—

Wax Iangenalspen K.P .; 783 Emnendlngen The invention relates to a dowel for fastening In boreholes, sometimes in wounds of structures, etc.

alt a sweeping system, a vertical surface profiling having, preferably with at least one longitudinal cover over part of it

Commonly provided cylnderKhnlionen hollow body, its

Inner main section protruding into the borehole against the inner bore of the hole can be sprayed off approximately radially outwards is.

Ba ready dowels of the type mentioned are known, which after the stones in a borehole by twisting a So-incense spread and thus held in place. The twisting of the incense is with a certain time ^ fttifwand connected, which auoh for larger assemblies cost a lot noticeably maoht. Furthermore must Injst for an equal number of dowels and screws Ba can also occur, since when using see below

SAD

009834/0749

large or too long screws through the drill hole, Dowel is damaged or blown, so that a safer Halt is no longer guaranteed.

Two of the present invention is to provide a comparatively improved dowel, which with little A time to install in a borehole 1st; for which a suitable screw does not have to be kept ready and in which, as a result, damage to the borehole by using unsuitable screws is excluded. This is achieved essentially by a received in the hollow body, opposite-this with the application of force movable expanding mandrel with an external profile, the in the event of a displacement and / or rotation, the hollow body is spread open. The expanding core takes over the puncture a screw and forms an integral part of the anchor. Preferably, the outer profile of the The expansion core can be designed to be essentially complementary to the inner surface of the hollow body. The hollow body can according to a particular embodiment of the invention by rotating the expansion core by less than 360 ° be fastened in the borehole. Alternatively, geelS Another embodiment of the invention, the expansion core You have a certain amount of spraying off the hollow body from this ur

009834/0749

Btreoke 2.B. by means of a special extraction tool or eccentric. In any case, the time required is compared to screwing in a screw «• much less.

4 ..

The invention is with its inventive details explained in more detail below with reference to the drawings. Be show:

Pig. 1 shows a first embodiment of an inventive Dowel with a cylinder-like hollow body and an expanding core rotatable therein in the case of unexpanded cabbage in a longitudinal section;

Fig. 2 is a cross section along the line II-II of Pig. H

3 shows the dowel according to FIGS. 1 and 2 with the hollow body expanded in longitudinal section;

Fig. 4 shows a cross section along the line IV-IV of Fig. 3;

Pig. 5 to 8 modifications of the anchor according to Flg. 1 to 4 Each in cross section;

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BATH ORIGINAL

Pig, 9 a further modification of the dowels according to Flg.

Γ tola 4 with unexpanded hollow body in longitudinal section ι

Pig, 10 "ine cross-section dor line X-X of Plg" 91

Pig, 11 the dowel according to Fig. 9, 10 with the hollow body expanded Ib longitudinal section;

FIG. 12 is a section along the UnIe XXI-XII of Pig. 11;

Pig. 13 shows a second implementation of a fog game according to the invention Dowel «with unspread hollow body in longitudinal sectionj

14 shows a third embodiment of an inventive

the appropriate dowel with a ByllnderXhnllohen Hollow body with unspread hollow body in the longitudinal direction;

Pig. 15 an extraction tool for expanding the hollow body of the dowel near Fig. 14 in a position before the expansion of the hollow body in seheeatisoher Depiction;

Pig. 16 the dowel naoh pig. 14 with expanded hollow body in longitudinal section j

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190153:

FIg. 17 the extraction tool according to VIg 15 in one Position near the »Spreading the hollow body;

VIg. 18 «In the fourth implementation, a ·· invented

dowel-like dowel · with a cylinder-like one Hollow body eowei an extractable one contained therein ^ extraction core in the case of an unspread hollow body la Ltngssohnittj

VIg · 19 a cross section along the line XIX-XZX of Fig. 18;

Fig. 20 the dowel naoh Flg. 18, 19 with an expanded hollow " body la Llngeeohnltt as well as

VIg. 21 a cross-section along the line XXI-XXI you VIg. 20th

The in VIg. 1 to 4, the dowel 1, 2 is used for fastening in a borehole 7 of a wall 8 and is used, for example, to attach a wall mirror 9. The dowel forms a cylinder-like hollow body X, its into the borehole 7, the inner main section protruding towards the inner surface of the borehole can be priced radially close to the outside, as well as an oil core 2 incorporated in the log body 1, which is designed in a similar way, only in the area of the main descendant of the hollow body 1, which can bounce off against the borehole.

• 'BAD ORIGINAL

00SI34 / 074

has a cross-section that differs from the Krels shape in the form of an equilateral triangle old rounded coke. On the other hand, on a head part 20 running towards the mouth of the borehole, the expanding core 2 has a circular cross-section and is rotatably mounted in a corresponding section 21 of the hollow body 1 that is not longitudinally slotted. The expandable main section of the hollow body 1 has several identical. LKngssohlitze 5 distributed over the Utafang, the number of which corresponds to the number of profile edges of the expansion cores 2. In the case of the execution example according to Flg. 1 to K accordingly three longitudinal slots 3 are provided. One longitudinal groove 6 each engages the profile edges of the expansion core 2 in the expansion joint.

The hollow body 1 is old with an outer surface profile In the pom of circumferential grooves 4 and longitudinal grooves 5 Mistake. The flares of the hats 4 are designed to diverge towards the mouth of the borehole "around a To prevent the dowel from being pulled out of the drill hole 7! The grooves 5 prevent the hollow body 1 from rotating in the borehole 7 even with a slight expansion its main section.

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BAD ORIGlWA-L

On de * Utefang of Spreizkernes 2, in the present case to the ttafang having on its Xrelsquerschnltt head part 20 ', a roller-shaped projection 10 is provided * which at least in the spread geroäS Fig. 3 $ 4 in a corresponding recess 11 on the inner surface of the hollow body 1 is lockable. In the execution examples according to Flg. 1 to 4, two recesses 11 are provided, only that recess being illustrated in which the projection 10 is locked when the hollow body is not spread.

At the end of its head part 20 is the expanding core 2 with a circumferential flange or bead 22 as well a diametrical incision 23 for receiving a screw benziehers provided. That followed the borehole opening Volumes of the hollow body «1 is also known per se Velse old provided a flange 24, and its the borehole 7 Flansehf facing Utah points you into the exercise the drill hole 12 (Figs. 5, 11). A mirror to be attached 9 must have a corresponding recess for receiving the rotation projection 12.

To attach the anchor according to FIGS. 1 to 4, the Hollow body 1 together with the expanding core 2 located therein

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duroh «in the corresponding mounting hole of the mirror 9 in the borehole 7 until the flange 24 of the 'hollow body 1 stops against the mirror 9 or until the entry of the anti-rotation projection 12 into a corresponding recess of the mirror 9, the expansion core 2 in a Rotary setting according to FIG. 2 is located, in which the hollow body 1 is unspread. Then the expanding core 2 is rotated by means of a screwdriver W with force against the essentially complementary surface of the hollow body 1 by an angle of about 60 °, the main section of the hollow body 1 defined by the longitudinal slots 3 prying off against the inner surface of the borehole 7 ( Flg. 3, h). Xn ** prelzposition, the longitudinal soles 3 run on both sides syaowtrisoh to each rounded triangular profile edge of the expansion core 2, each of which engages in a corresponding rod 6 , so that a twisting of the expansion cores 2 la in the sense of a relaxation of the hollow body 1 is largely prevented. An additional protection against twisting is the drum-shaped projection 10 in conjunction with the associated depression 11 in the expanded position of FIG. 3 _S 4.

Ό09834 / 0749

Oemlte Fig. 5 shows the expansion core 2 in the area of two lengthwise strand strands 3 defined expandable main section of the hollow body 1 has an elliptical cross section. The inner cross section of the hollow body 1 1st in the area of the expandable main section elliptical and completely complementary to the cross section of the expansion core 2.

Oemäfi Fig. 6 shows the expansion core 2 in the region of the the longitudinal slots 3 defined expandable main section · « of the hollow body 1 has a rectangular cross-section with rounded narrow sides, while the inside « cross section of the hollow body 1 in this area elliptical and thus not full to that of the expansion core 2 » constantly complement & r 1st.

Qeaafi Pig. 7 shows the expanding core 2 in the area of the longitudinal sole seats 3 defined expandable main portion of the hollow body 1 a cross section in Fora • Ines equilateral spherical triangles on «where the inner cross section of the hollow body 1 is completely complementary is. '

Qemäe Fig. 8 shows the expansion core 2 in the region of the the longitudinal slots 3 defined expandable main

00983WQ749

«Without the center of the hollow body« 1 shows a cross-section in the form «In ·· square, with the inner cross-section dee Hollow body 1 is completely konpleaentKr.

With each of the 91g. 5-8 illustrated modifications one of the inventions & Sen DUbels is sur Abspraizung of the hollow body requires a rotation of the expansion core 2 by an angle of at most 90 °, namely according to FIG P Fig. 5, 6 at an angle of 90 °, GeoBft Fig. 7 at one Wrap of 60 ° (analogous to wings 1 to *) and total Fig. 8 uo an angle of 45 °.

With the dowel naoh Flg. 9 to 12, part of the outer surface of the hollow body 1 can be expanded beyond the diameter of the bore 7, as a rule, a further part of the outer surface of the hollow body 1 can be priceed off or pressed against the inner surface of the borehole. The unequal, expanded hollow body 1 has here, in general, Flg. 10 has a cross-section deviating from the circular cross-section of the inner surface of the borehole on its main section, which can be expanded, defined by the longitudinal slots 3, and is provided on its peripheral surface parts set off from the inner surface of the borehole "with a surface profile in the form of ribs 23" which is designed to penetrate the inner borehole surface.

00.i83W07 * 9

ORIGINAL BATHROOM

Modification results in relation to DUbeln according to Flg. 1 to 8 the advantage that the effort required to rotate the expansion core 2 becomes smaller that the expanding core 2 can consequently be dimensioned weaker and that the radial force on the inner surfaces of the borehole 7 is less, which is shown, for example, in more fragile material existing walls can be beneficial.

In the dowel according to FIG. 1j), the expansion core 2 has a guide groove 19 running in a steep helical shape as well as a conical widening 25 on its band section protruding into the borehole, and a fixed projection 30 extending from the inner surface of the hollow body 1 engages the guide groove 19. The guide groove 19 extends over an angular range of slightly less than 150 °. At the inner end of the guide groove 19 extending into the borehole, a snap-in recess 31 is provided for the fixed projection 30. Uta enable the expansion core 2 to be introduced into the hollow body 1 xu prior to the fastening of the dowel, the guide groove 19 continues towards the head part of the expansion core 2 in a straight line parallel to the courage 32. Optionally, the hollow body 1 can also be slotted continuously along its length.

009834/0749

To strengthen the dowel according to Flg. 13 In a borehole, the expanding core 2 is in the sucked-out position relative to the hollow body 1. If the expanding core is ^{rotated clockwise by about 360 ° (when viewed from above), the expanding core 2} is pushed out of the hollow body 1, as this is illustrated by dash-dotted lines, whereby at the same time the conical enlargement 25 of the expansion core 2 is pressed into the hollow body 1 at its band section protruding into the borehole and its expansion or pressing acts on the inner surface of the borehole.

At dea dowels naoh Pig. 14, 16, the expansion core 2 has a long profile in the form of several strings lined up against the bore hole mouth of diverging stumps 13 "01" to form the expansion core 2 The inner surface of the hollow core 1, which is essentially complementary, is old at the inner end facing into the borehole. A narrow protrusion or flat surface 26 is provided to snap into place behind the bottom surface of the innermost truncated cone 13 when the expanding core moves out of the position shown in FIG. IK out the position of FIG. 16 has been pulled out by a certain distance. The expanding core 2 has a hollow body 1 protruding in each position auajlem lug 27 with a transverse bore 14 into which

009834/0749

alie Flg. 15 " 17" In extension 16 of an assembly tool 15, eleven colors. OeaftS Pig. 15 »17 let the mounting tool 15 be designed in the form of an angle lever. However, a pivotable eccentric can also be used. If, after the extraction tool 15 has been inserted into the bore 14 of the expansion core 2, a force is exerted in the direction of an arrow 17 in FIG. 14 can be brought into that according to FIG. 16, the hollow body 1 being spread outwards.

The extension 27 of the expansion core 2 protruding from the hollow body is provided with an axial thread bore on which a special mirror holding hood can be screwed off. Optionally, the extension of the expansion core 2 can also be designed as a hook '.'

Otr Chub according to Flg, 18 to 21 is «similar to that of the one near Flg. 14, 16, however, there is an old atm difference, that the expanding core 2 has an axially unchanged cross-sectional profile over the entire length of its longitudinal profile, with four radial sawtooth ribs 28 of constant width being formed. Each Sfige- - tooth flap 28 is in each case an equally wide, having two parallel longitudinal slots in the main section

001834/0749 bad original

the hollow body · 1 formed expanding tongue 24th old compliant Assigned to a sawtooth-shaped inner surface.

When the hollow body 1 is spread apart, only the Outer surfaces of the Spreisxungen 24 with the inner surface of the borehole 7 engaged, so that calibrated in an analogous manner Wise those advantages result «which in context with the dowels according to Flg. 9 to 12 already preceded have been explained.

Open to a further modification (not illustrated) of the dowel naoh Wg. 18 to 21 are the sawtooth ribs as well as the cooperating expansion joints 24 in places of observation lines running curvilinearly trained «This results in a better ■ circumference Distribution of forces on the inner surface of the drill hole 7 and there is less risk of cracking. The invented chub is especially designed to be attached In softer winds such as wood, aerated concrete, Paser plates suitable.

009834/0749

BATH

Claims (1)

Patent claimsOha 1) Dowels for fastening in drill holes, preferably in Wounds of structures, with a »expedient catfish having a shorter surface profile) Vorgwlsa old at least a »LHngsschlltz over suatadest a part of setier Langer provided cylindrical hollow body, whose in the Bohrlooh The inner main section protruding towards the inner wall of the borehole can be spread approximately radially outward is, g β k β η η ζ elo η η e t by an In deakiohlkurper (1) recorded, compared to this Expanding core (2) that moves under force and has an external profile that is released when it is moved and / or twisting the hollow body (l) spreads. 8) dowel naoh claim 1, characterized in that ( therefor the external filling to that of the internal surface of the hollow body (1) is essentially complementary is designed. 5) dowels naoh Anapruoh 1 or 2, characterized in that the expanding core (2) is shaped like a cylinder and a cross-section deviating from the circular shape 0Ü983W0749 with at least two profile edges, preferably in the form of a simultaneous triangle with rounded corners (Fig. 2, 4), in the form of an equilateral spherical triangle (Fig. 7) » in the form of an ellipse (Fig. 5), in the form of a rectangle with rounded has narrow sides (Fig. 6) or in the form of a square (Fig. 8) and that. the husk core (2) is rotatable in relation to the hollow body (1) by an angle smaller than y & Q ° in order to spread it apart. 4) dowel according to one or more of claims 1 to 3 j characterized in that the expanding core (2) is ledlglloh in the area of the against the borehole (7) The main section of the hollow body (1) that can be peeled off has a cross-section deviating from the circular shape • a head part running to the mouth of the Bonrlooh (80), on the other hand, has circular transverse alignment and in one corresponding «non-log-slotted section (21) of the hollow body (1) is rotatably mounted 1st. 5) dowel according to one of claims 3 to 5, characterized in that that on the circumference of the expansion core (2), preferably on the circumference of its head part (20), a wart-shaped projection (10) is provided QÜ9834 / 0749 BATH ORIGINAL is, which is at least in the spread position in a corresponding recess (11) can be snapped into place on the inner surface of the hollow body (1). 6) dowel according to one of claims 3 to 5 * thereby characterized «that the expanding core (2) at the end of its head part (20) with a circumferential flange orbead (22) and a diametrical cut (2?) Provided to accommodate a screwdriver " is. 7) chub according to one of claims 3 to 6, characterized characterized that the against the borehole (7) expandable main section of the hollow body (1) on its inner surface with lling extending grooves (6) is provided for engaging the profile edges of the expanding core (2) in the expanded position 8) 1 dowel naoh one of claims 3 to 7 »thereby characterized «that the splayable main section of the hollow body (1) provided with several longitudinal sole seats (j5) evenly distributed over the circumference , the number of which corresponds to the number of profile edges of the expanding core (2), undjdaß in the expanded position the longitudinal slots (3) extend symmetrically on both sides to each profile edge (Fig. 4 and 12). 009834/0749 9) DUbel according to one of claims 3 to 8, characterized in that » that the one adjacent to the Bohrloohmundung End of the hollow body (1) in a known manner has a flange (24) and that the dem Borehole (7) facing Planschfläcae in the vicinity of the borehole opening? Uckbaren Having Drehsioherungsvorsprung (12). 10) Dubel according to one of several of claims 1 to 9, characterized in that only a part of the outer fly of the hollow body (1) against the boreholeixuMmflloh is spreadable. 11) dowel according to claim 10, characterized jekennzeiohnet, that the unshelled hollow body (1) on its abepreisbarea Main section a cross-section deviating from the three-dimensional cross-section of the borehole depth and the surface profiling on its tfangfangstück, which is offset from the inner surface of the borehole (Ribs 25 in Figs. 9 to 12), the intended for penetration into the inner surface of the drill hole is. 009834/0749 12) Dttbel according to claim 1, characterized in that the expansion core (2) has a profile filling, -preferably In the form of several lined up, to the borehole wall diverging K & elstump (1?) »Has, deJ the expanding core (2) made of deai hollow body (l) can be pulled out a certain distance to expand it 1st, and that the expansion core (2) in essential complementary designed inner surface of the hollow body (1) at least one narrow projection, preferably you flansoh (26), to snap into place behind a bottom surface of one of the Conical door pad (13) with the expanding core pulled out (2). 13) dowel according to claim 12 «characterized in that dafi the price core (2) about the satat · his · his TJngaprofllerung suafttzllch an «axially unchanged · Cross-shaped or star-shaped cross-sectional profiles having, wherein several over the circumference distributed radial.Slgezahnrlppen (28) formed of a certain width are, and that each number has one having a smooth width, through two parallel longitudinal slots each in the main section of the hollow body (1) formed splay tongue (2 ^) with complementary is assigned to a sawtooth-shaped inner surface » 009834/0749 BATH ORIGINAL Ik) DCDmI naoh claim 1% daduroh characterized that the · SKgezabnrlppen (28) as well as the spreading stanchions (24) are formed in parts so as to run in a curve. 15) Dowels naoh one of claims 12 to 14, characterized in that the expansion core (S ) protrudes in each position aua the hollow body (1) ** Approach (27) has, which with an extraction tool (15) or a pivotable! Eccentric can be coupled 1st. 16) dowels naoh claim 15, daduroh marked, dafi the approach (27) with an axial thread hole provided 1st. 17) dowel naoh claim 15, characterized in that the extension (27) is designed as a beacon. 18) dowels according to one of the AneprUoha 1 «10, 11, thereby characterized in that the sprinkling core (2) has a helical curve extending in one place Guide groove (19) and a conical widening on its band section protruding into the borehole (7) ' (25) upwards every one of the inner surface of the 009834/0749 HohlkSrpers (1) outgoing fixed projection (30) engages in the guide groove (19). 19) dowel according to claim 18, characterized in that the guide groove (19) extends over an angular range of slightly less than J5ÖO °. 20) dowel according to one of claims 18, 19 / characterized, dad at the inner end extending into the drill hole, of the guide groove (19) a snap-in recess (21) provided for the fixed projection (30) 1st. 21) dowel according to one of claims 18 to 20, daduroh characterized in that the guide groove (19) to the head part (20) of the expansion core (2) into a straight, axis-parallel groove (22) continues. 22) dowel according to one of claims 18 to 20, daduroh characterized in that the hollow body (1) is continuously elongated. Patent attorney 009834/07 4 9 bad original it. Le e rs e11 e