DE7100768U - Expansion dowel with threaded piece - Google Patents

Description

PATENT LAWYERS. ^

Dipl. Ing. E. Eder ξ Dipl. Ing. K. Schieschke

Phillips "Drill Company, mc. Michigan City, Indiana, USA

Expansion dowel with threaded piece

The invention relates to one with a threaded piece provided expansion anchor for concrete and other masonry, In the masonry is cut with a drill with metal carbide cutting edge drilled a hole of such a diameter that the dowel can be inserted in a press fit. The dowel has a threaded piece on and at its inner and lower ends, respectively, a portion of reduced diameter with a conical end consists of one piece. On the section with the reduced diameter there is a slotted expansion sleeve which prevents axial movement when tightening the dowel.

The dowel is suitable, for example, for attaching components on a surface, the dowel through an opening in the component gent and on the thread tücic of the dowel a cutter and one Washer. When the nut is tightened, it moves Dowel something out of the borehole, through which the expansion sleeve runs onto the widening, tonic section- Da Do not move the expansion sleeve through it on the other hand, the dowel moving in an axial direction expands, is between the extended section and the: Bohrlocn ixa The masonry wedges and holds the dowel in place.

It is advantageous if the price impulses are neglected slides easily on the jconic section. Against it must to A rotary movement of the expansion sleeve can be prevented in order to achieve a higher load-bearing capacity of the anchor.

According to the invention, a threaded piece is provided for this purpose Expansion dowel seen in a borehole of about same diameter in concrete and the like at least: m ± t can be used with a light PreSsitz. The expansion anchor is marked through a conical section on the inner (lower) Dowel end, through a cylindrical section of reduced diameter between the conical section and the thread— piece, so that there is a shoulder, and by an expansion sleeve on the cylindrical section, which when. Putting on the Dowel slides on the Öeni conical section and expands.

Another embodiment is "under the expansion sleeve on the cylindrical section on the shoulder one intended.

: 3:

It is also of advantage if wezm at the "/ Ordering edge of the spreading" sleeve is a singing groove.

For a more detailed explanation of the invention, reference is made to Reference drawing. It shows:

Fig. 1 is a side view of an inventive Spreisdüle,

Fig . D. a development of the expansion sleeve in one plane,

3 shows a section along the line 3-3 in FIGS

Fig. 4 is a partial section along the line 4-4 in Fig. Ί.

The drawing shows an expansion plug Tu mix: one. Bundle 12 for fastening a component (not shown) by means of a nut (also not shown) with a washer ..

Ar »closes the conical section 14 at the lower end of the dowel a cylindrical section 16 of reduced. diameter so that a twisted shoulder Io results. On the cylindrical section sits an expansion sleeve 20 hit Singnuten 22 on upper and lower sand. The lower Singnut is at .Tighten the dowel 10 effectively.

A corrugation 24, preferably consisting of axial lulls, is present on the shoulder 10. In Fig. 1 they are visible through the S3 = it 26 of the expansion sleeve. They prevent a rotating joint between the expansion sleeve 20 and the dowel section 12 Beweeune c.er 3 ^> reishüise on the deiEL Tpri * i / TT »-i * s r ~ rf * n sections 3eis pulling on the dowel 10, the expansion sleeve 20 shifts in aegeiaber oen Sylincrischen section

I 16, runs on the conical section 14 and iie.g ± iinT. themselves

I stretch. Your front bsv. lower sand meets that

I conical section, but digs as a result of the lower groove

I not one. In the end she redeemed the unruly end of the Jcanic

I section 14, which is also corrugated at 2b. These

I Siffeiung dringx: into the 3-sleeve 20 and increase the pull-

strength of the anchor ..

The spreading nozzle 20 "is normally flat as shown in FIG. 2 The strip is produced using a suitable holder around section 16 ge ^ icJcelr. The finished price dowel 10 fits into the borehole with a slight pressure.

PATENT LAWYERS

DipL Ing. L Edsr DipL Inc. L Scfetescfckt

? 100768 -ΒΛ.Ή

Claims (6)

PATEN ADVERTISERS Dipl.-Ing. L Ider SIpL Ing.K. Schiescfiki Scnutzans ρ back 1 _m Vi τ p i yscrr, Ge ^r i? IndeS'L.ÜCk Accidental expansion anchor of the iH SXZl SoiurJ-OCü VOH SirwH Cisicil £ ni DnrchEieSSer in SeXOn UHG G.227— clexcnen can be removed at least to a slight pressure, §, gejcezinzeicioner ditrch a xonic üschixixr (14) aia inner [! (door) Dübeiende, du2? ci * of a cylindrical iüjschniiit {16} of! reduced önrchnesser between, the conical sections II (14) xmd the Geznjdä & stäcL (12), so that £ a shoulder (1 &) arises, and through an expansion sleeve (20) a.iz £ desi cylindrical ^ J section (16) which bexH tightening the dowel aix £ the ionic Section (14) slides and expands. 2. Expansion anchor according to claim 1, characterized by a Sifxelung (24) under the expansion sleeve (20) on the cylindrical Section (16) on the shoulder (ίο). 3. Expansion dowel according to claim 2, characterized in that the corrugation (24) consists of axial grooves. 4 · Expansion dowel according to one of the preceding Ansprücne, characterized by a second ßixfelung (2NC) en the site of the conical portion with the largest diameter. ■ j. Expansion dowel according to one of the preceding claims, characterized in that the front edge of the expansion sleeve (2G) is provided with an annular groove (2 ^). 6. Expansion anchor according to claim 1, characterized by a Corrugation (2ö) at the point of the xonic section (14) with the. largest diameter. of? ■ '- d ± e Sprezsiijilse (22) verses 1 6, π ^ π-.τττ-ϊι vorcerei Eand r one