SE447500B

SE447500B - A screw lock for use in countersunk drilled holed, so-called adjusting screws for casements

Info

Publication number: SE447500B
Application number: SE8402786A
Authority: SE
Inventors: Berit Fries
Original assignee: Berit Fries
Priority date: 1984-05-23
Filing date: 1984-05-23
Publication date: 1986-11-17
Also published as: SE8402786L; SE8402786D0

Abstract

A screw lock for use in countersunk drilled holes characterised by the fact that consists of a washer-shaped part (1) and at least one anchor wing (4) extending from this and at least one locking wing (7). When screwing in the screw (3) with a part (5), the anchor wing (4) is pressed into the wall of the drill hole counterbore and, using a part (8), the lock wing (7) snaps over the top of the head of the screwed in screw (3).<IMAGE>

Description

447 son 2 10 15 20 25 35 40 formad, för att svara mot skruvskallens form. Från den brick- formade delen 1 sträcker sig, i det visade exemplet, fyra stycken förankríngsvingar 4. Dessa förlöper huvudsakligen parallellt med borrhålets 2 axel och uppvisar utåtvikta partier 5, vilka kan vara försedda med uddar 6. Avståndet från borrhàlets centrumaxel till respektive förankringsvinge 4 är mindre än skruvskallens ytterradie (se fig. 6). 447 son 2 10 15 20 25 35 40 shaped, to correspond to the shape of the screw head. Extending from the washer-shaped part 1, in the example shown, are four anchoring wings 4. These run substantially parallel to the axis of the borehole 2 and have outwardly folded portions 5, which may be provided with tips 6. The distance from the center axis of the borehole to the respective anchoring wing 4 is smaller than the outer radius of the screw head (see fig. 6).

Från den brickformade delen 1 sträcker sig vidare fyra stycken låsvingar 7, vilka uppvisar i förhållande till skruv- låset inåtriktade partier 8. Som bl.a. klart framgår av fig. 4 består sålunda förankringsvingarna 4 och lásvingarna 7 av jämn- breda tungor försedda med utåtvikta partier 5 resp. inåtriktade partier 8 i form av vid tungans 7 ena kant sig sträckande inåt- böjda fingrar. Av samma figur framgår klart, jämför även fig. 3 att respektive inâtriktat partis 8 mot den brickformade delen 1 vända kant 9 är sned eller lutar snett inåt och från den' brickformade delen 1. Låsvingarna 7 sträcker sig parallellt med brickhålets 2 axel och på ett avstånd från denna lika med eller något större än skruvskallens ytterradie.Extending from the washer-shaped part 1 are further four locking wings 7, which have inwardly directed portions 8 in relation to the screw lock. as can be clearly seen from Fig. 4, the anchoring wings 4 and the locking wings 7 thus consist of equally wide tongues provided with outwardly folded portions 5 and 5, respectively. inwardly directed portions 8 in the form of inwardly bent fingers extending at one edge of the tongue 7. From the same figure it is clear, also shows Fig. 3 that the respective inwardly directed portion 8 towards the washer-shaped part 1 faces obliquely or slopes obliquely inwards and from the washer-shaped part 1. The locking wings 7 extend parallel to the axis of the washer hole 2 and on a distance from this equal to or slightly greater than the outer radius of the screw head.

På högra sidan av fig. 4 samt i de övriga figurerna visas låsvingarna förlängda med en del 10, vilken är bockad i form av ett inåtriktat "V" 11 (fig. 3). Denna förlängningsdel 10 är ej nödvändig och visas till vänster i fíg. 4 ett skruvlås enligt uppfinningen, vilket saknar denna förlängningsdel 10.On the right side of Fig. 4 and in the other figures, the locking wings are shown extended with a part 10, which is bent in the form of an inwardly directed "V" 11 (Fig. 3). This extension part 10 is not necessary and is shown on the left in fig. 4 shows a screw lock according to the invention, which lacks this extension part 10.

Vid monteringen av t.ex. en karm 11 vid en vägg 12 träs skruvlåset enligt uppfinningen på skruven och förs denna där- efter in i förborrningen 13 med försänkningen och iskruvas på vedertaget sätt. När skruven 3 och skruvláset bottnar i för- sänkningen kommer låsvingarna 7 att pressas utåt av skruvskallens koniska del och tränger med de utàtvikta partierna 5 in i för- sänkningens väggmaterial. Vid iskruvandet av skruven kommer samtidigt de ínåtriktade partierna 8 hos låsvingarna 7 att av skruvskallens koniska del tvingas fjädra undan, tillåtande skruvskallens passage. När skruven bottnar fjädrar partierna 8 tillbaks och in över skruvskallen. Genom att partiets 8 nedre kant 9 är sned säkerställes att fingret 8 alltid mer eller mindre fjädrar ut över skruvskallen, även om skruven skulle gå snett eller ej ha skruvats i botten. Snedställningen garanterar vidare att glapp ej kan uppstå mellan fingret 8 och skruvskallen. 10 15 20 25 30 3 447 sou När skruven är iskruvad tillåts endast en roterande rörelse av skruven och garanterar skruvlåset enligt uppfinningen genom fixeringen i karmen 11 och greppet om skruvskallen att denna ej kan äta sig in i omgivande material och än '~na glapp.When mounting e.g. a frame 11 at a wall 12, the screw lock according to the invention is threaded onto the screw and this is then inserted into the pre-bore 13 with the recess and screwed in in an accepted manner. When the screw 3 and the screw lock bottom in the recess, the locking wings 7 will be pressed outwards by the conical part of the screw head and penetrate with the unfolded portions 5 into the wall material of the recess. When screwing in the screw, at the same time the inwardly directed portions 8 of the locking wings 7 will be forced by the conical part of the screw head to spring away, allowing the passage of the screw head. When the screw bottoms, the portions 8 spring back and in over the screw head. Because the lower edge 9 of the portion 8 is oblique, it is ensured that the finger 8 always more or less springs out over the screw head, even if the screw would go obliquely or have not been screwed into the bottom. The inclination further guarantees that play cannot occur between the finger 8 and the screw head. When the screw is screwed in, only a rotating movement of the screw is allowed and the screw lock according to the invention guarantees by the fixing in the frame 11 and the grip on the screw shell that it cannot get into the surrounding material and still loosen.

Justering av karmen kan nu göras med hjälp av skruvens 3 egen gänga.Adjustment of the frame can now be done using the screw's 3 own thread.

Vid demontering av skruven kan lämpligen ett konslipat rör införas i hålförsänkningen, vilket rör tränger undan lås- vingarna, varefter det är fritt att skruva ut skruven. 1 fig. S visas ett skruvlàs, vid vilket förankringsvingen 4 och làsvingen 8 är anbringade på en gemensam, jämnbred tunga.When disassembling the screw, a concave pipe can suitably be inserted into the hole recess, which pipe pushes away the locking wings, after which it is free to unscrew the screw. Fig. S shows a screw lock, in which the anchoring wing 4 and the locking wing 8 are mounted on a common, evenly wide tongue.

När skruvlàsämnet enligt fig. 5 är bockat till den för skruv- låset avsedda formen,kommer liksom tidigare beskrivits tungorna att vara parallella med borrhàlsöppningens centrumlinje och partierna 8 inàtvikta. De närmare den brickformade delen 1 liggande partierna 4 kan lämpligen vara något bockade in mot skruvlasets centrum medan partiets 4 uddformade del 6 är bockad vinkelrätt utåt. Härvid kommer förankringsvingen 4 vid skruvens iskruvande att av skruvskallens sneda sida pressas ut- åt, varigenom uddarna 6 intränger i försänkníngshàlets vägg- material.When the screw lock blank according to Fig. 5 is bent to the shape intended for the screw lock, the tongues will, as previously described, be parallel to the center line of the borehole opening and the portions 8 folded in. The portions 4 lying closer to the washer-shaped part 1 can suitably be slightly bent towards the center of the screw weld, while the pointed part 6 of the portion 4 is bent perpendicularly outwards. In this case, when the screw is screwed in, the anchoring wing 4 will be pressed outwards by the oblique side of the screw head, whereby the tips 6 penetrate into the wall material of the countersunk hole.

I de visade exemplen är skruvláset försett med fyra stycken förankringsvingar och fyra stycken làsvingar men kan naturligt- vis inom ramen för uppfinningen antalet variera. Praktiskt torde dock minst två vingar av vardera slaget vara nödvändiga.In the examples shown, the screw lock is provided with four anchoring wings and four locking wings, but the number can of course vary within the scope of the invention. In practice, however, at least two wings of each kind should be necessary.

Lásvingarnas 7 förlängningsdelar 10 tjänar medelst sina "V-formade" inbockningar vid ändarna till att fasthàlla en täckplugg 14, se fig. 8.The extension parts 10 of the locking wings 7 serve by means of their "V-shaped" bends at the ends to hold a cover plug 14, see Fig. 8.

Det torde mot bakgrund av ovanstående för fackmannen stå klart, att uppfinningen kan varieras med avseende på den rent konstruktiva utformningen med uppnáende av det avsedda resultatet.In the light of the above, it will be clear to the person skilled in the art that the invention can be varied with respect to the purely constructive design with the attainment of the intended result.

Claims

447,500 Patent claims

Screw lock for use in countersinks for countersunk boreholes (13), characterized in that it consists of a washer-shaped part (1) and at least one anchoring wing (4) extending therefrom and at least one locking wing (7), wherein the screw-in wing (4) when the screw (3) is pulled in with a part (5) is pressed into the wall of the borehole recess and the locking wing (7) with a part (8) snaps over the top of the head of the screw-in screw (3).

Screw lock according to claim 1, characterized in that the anchoring wing (4) and the locking wing (7) extend substantially parallel to the shaft through the hole (2) of the washer-shaped part (1).

Screw lock according to Claim 1 or 2, characterized in that four anchoring wings (4) and four locking wings (7) extend from the washer-shaped part (1).

Screw lock according to Claim 1, 2 or 3, characterized in that the anchoring wings (4) have outwardly folded portions (5) at the free ends.

Screw lock according to one of Claims 1 to 4, characterized in that the locking wings (7) each have an inwardly directed (8) portion located at a distance from the washer-shaped (1) part. -

Screw lock according to one of Claims 1 to 5, characterized in that the anchoring wing (4) connects to the washer-shaped part (1) in a place radially inside the radius of the outer edge of the screw head of the screw (3) to be used. together with the screw lock.

Screw lock according to Claim 5 or 6, characterized in that the aligned portion (8) has an edge (9) facing the washer-shaped part (1), which is inclined inwards and away from the washer-shaped part (1). .

Screw lock according to one of the preceding claims, characterized in that the anchoring wings (4) and the locking wings (7) are formed by tongues extending from the washer-shaped part (1) and that resp. The inwardly directed portion (8) of the locking swing (7) is formed by a finger arranged at one edge of the tongue and bent out of the plane of the tongue.

Screw lock according to one of Claims 4 to 8, characterized in that 5 resp. the unfolded portion (S) of the anchorage pig (4) is provided with one or more capes (6).

Screw lock according to Claim 1, 2 or 3, characterized in that the anchoring wing (4) and the locking wing (7) are formed by a common, substantially evenly thick tongue with a tongue arranged at one edge of the tongue, directed outwards from the plane of the tongue. anchoring tab (4), and a locking portion (7) arranged at the other edge of the tongue, inwardly directed from the plane of the tongue.