SE515826C2

SE515826C2 - Bolt consisting of two shell-shaped bolt halves coupled with a pivot joint and method for manufacturing the bolt

Info

Publication number: SE515826C2
Application number: SE9900459A
Authority: SE
Inventors: Ingvar Javier; Claes Nordenstam
Original assignee: Megamec Com Beneficial Trust
Priority date: 1999-02-11
Filing date: 1999-02-11
Publication date: 2001-10-15
Also published as: AU2953100A; WO2000047906A1; SE9900459D0; SE9900459L

Abstract

The invention relates to a threaded bolt (1) which exhibits a hollow interior (2, 3). The bolt (1) is in the form of two shell-shaped bolt halves (4, 5) and exhibits a parting line (6) which extends in the longitudinal direction (7) of the bolt. A nut (50) provided with a thread (9) is so arranged as to be capable of being screwed onto the assembled bolt (1) in order to achieve effective compression of the parts (4, 5) of the bolt one against the other. The invention also relates to a method for making the aforementioned bolt (1).

Description

föredragna utföringscxempel varvid häﬁvisas till bifogade ritningar pà vilka Fig 1 visar en planvy av en bult enligt uppfin- ningen framställd av plast genom formsprutning och visad 1 helt utfällt läge, Fig 2 visar bulten i ett hopvikningsläge, Fig 3 visar bulten i ett nästan färdighopvikt monteringsläge, Fig 4 visar bulten i ett helt färdigt monterat läge med en visad mutter i pàskruvningsläge, Fig 5 visar bulten med pàskruvad mutter, Fig 6 visar bulten sedd snett bakifrån fràn dess yttre svängledssida. preferred embodiments whereby ﬁ is shown in the accompanying drawings in which Fig. 1 shows a plan view of a bolt according to the invention made of plastic by injection molding and shown 1 fully unfolded position, Fig. 2 shows the bolt in a folding position, Fig. 3 shows the bolt in an almost ready-folded mounting position Fig. 4 shows the bolt in a fully assembled position with a nut shown in the screw-on position, Fig. 5 shows the bolt with the screw-on nut, Fig. 6 shows the bolt seen obliquely from behind from its outer pivot side.

Uppfinningen lämpar sig att tillämpas vid framställning av gängförsedda bultar 1 som består av material som gär att gjuta, t.ex. aluminium eller legeringar därav, eller av material som lämpar sig att formspruta, nämligen plastmaterial, t.ex. nylon eller andra lämpliga miljövänliga plastsorter, men i fortsättningen beskrives och visas pà ritningarna i Fig 1~6 för enkelhetens skull endast plastform- sprutning som avsedd tillverkningsmetod.The invention is suitable for application in the manufacture of threaded bolts 1 which consist of materials which tend to be cast, e.g. aluminum or alloys thereof, or of materials suitable for injection molding, namely plastic materials, e.g. nylon or other suitable environmentally friendly plastics, but in the following, for the sake of simplicity, only plastic injection molding as the intended manufacturing method is described and shown in the drawings in Figs.

En sagda bult 1 uppvisar hälformigt innandöme 2, 3 och bildas av tvà delar 4, 5, d.v.s. tvà bulthalvor. Den sagda avsedda bildade bulten 1 uppvisar ett delningsplan 6 som sträcker sig utmed bultens längdriktning 7 och företrädesvis gemensamt med bultens diameter D och angränsande mitt 8.A said bolt 1 has a heel-shaped interior 2, 3 and is formed by two parts 4, 5, i.e. two bulthalvor. The said intended formed bolt 1 has a dividing plane 6 which extends along the longitudinal direction 7 of the bolt and preferably in common with the diameter D of the bolt and adjacent center 8.

En med invändig gänga 9 försedd mutter 50 av företrädesvis det slag som liknar en kupolmutter med ett tillslutande lock 10 vid dess ena ände 50A är anordnad pàskruv- bar gängorna 11, 12, hos den sammankopplade bulten 1 i och för àstadkommande av en effektiv sammanpressning och sammanhållning av de bàda bultdelarna 4, 5 i riktning 13, 14 mot varandra. Vid mutterns andra motstàende ände 5OB finnes en lutande fläns 51 515 826 på vars utsida räfflor 52 finnes f r att effektivt kunna ligga an mot en anslntande del och fasthållas därvid De båda delarna 4, 5 är i det i Fig 1-6 visade uttöringsexemplet sammankopplade med varandra svängbart kring en gemensam mellanliggande svängled 15 som kan bildas av en förtunning i plastmaterialet utmed det avsedda vikstället längs svängleden.A nut 50 provided with an internal thread 9 of preferably the kind similar to a dome nut with a closing lid 10 at one end 50A is provided with screw-on threads 11, 12, of the interconnected bolt 1 in order to effect an effective compression and cohesion of the two bolt parts 4, 5 in direction 13, 14 towards each other. At the other opposite end 5OB of the nut there is an inclined flange 51 515 826 on the outside of which grooves 52 are located so as to be able to effectively abut against an adjoining part and are thereby held. each other pivotable about a common intermediate pivot joint 15 which can be formed by a thinner in the plastic material along the intended folding point along the pivot joint.

Den sagda svängleden 15 mellan de båda samman- kopplingsbara bultdelarna 4, 5 sträcker sig längs bultens längdaxel 16 utmed bultens ena sida 17, d v.s. exempelvis den krökta sidan hos en mellan två rätvinkligt i förhållande till varandra riktade gängtappar 18, 19 gående sned förstyvnings- kropp 20.The said pivot joint 15 between the two interconnectable bolt parts 4, 5 extends along the longitudinal axis 16 of the bolt along one side 17 of the bolt, i.e. for example, the curved side of an oblique stiffening body 20 going between two rectangular threaded studs 18, 19 at right angles to each other.

Mellan de båda bulthalvorna 4, 5 finnes medel 21, 22 som fungerar till att hålla samman bultdelarna 4, 5.Between the two bolt halves 4, 5 there are means 21, 22 which function to hold the bolt parts 4, 5 together.

Sagda medel utgöres lämpligen av tapp 21 och hål 22, där tappar 21 utskjuter från ena bulthalvans 4 skalformiga väggar 23 i varandra mötande hörn 24 utanför ena bulthalvans kanter vid sagda bulthalvans omkretsvägg 23 medan ett motsvarande antal passande hål 22 är belägna på den andra bulthalvan 5 vid dess omkretsvägg 23A vid halvans hörn 25 i förtjockningar 26. Det går naturligtvis även att variera tapp/hål hos de båda bult- delarna 4, 5 så att olika kategorier finnes på en och samma halva 4, 5. Sammankoppling av skruven 1 medelst de två halvorna 4, 5 medför att tapparna 21 kommer i ingrepp med hålen 22 par- vist.Said means suitably consists of pin 21 and holes 22, where pins 21 project from the shell-shaped walls 23 of one bolt half 4 facing each other outside the edges of one bolt half at said circumferential wall 23 of said bolt half while a corresponding number of matching holes 22 are located on the other bolt half 5. at its circumferential wall 23A at the corner 25 of the half in thickenings 26. It is of course also possible to vary the pin / hole of the two bolt parts 4, 5 so that different categories exist on one and the same half 4, 5. Connection of the screw 1 by means of the the two halves 4, 5 cause the pins 21 to engage the holes 22 in pairs.

En bult kan vara rak eller kan såsom visas i exemplet bildas av en vinkelbult 1 och vara försedd med stöd- anslag 27, 28 vid bultens resp gängförsedda 11, 12 utskjutande företrädesvis tillslutande tapphalvor 29, 30. Avbrott 31, 32 mellan gängorna 11, 12 finnes vid övergången 33, 34 mellan de båda bulthalvorna 4, 5, företrädesvis i form av en kordaliknande avfasning 31, 32. De sagda avbrotten 31, 32 är till för att underlätta att kunna koppla samman skruvhalvorna 4, 5 med varandra utan att någon svår sammanpassning av 515 826 Ett förfarande för framställning av en gängför- sedd bult 1 enligt uppfinningen innebär att man framställer tvà skalformiga bulthalvor 4, 5 som är avsedda for att bilda en gemensam bult 1 genom gjutning av metall eller formsprutning av plast enligt ovan.A bolt may be straight or may, as shown in the example, be formed by an angular bolt 1 and be provided with support stops 27, 28 at the bolt or threaded 11, 12 of the bolt projecting, preferably closing pin halves 29, 30. Interruptions 31, 32 between the threads 11, 12 are present at the transition 33, 34 between the two bolt halves 4, 5, preferably in the form of a cord-like chamfer 31, 32. The said breaks 31, 32 are for the purpose of being able to connect the screw halves 4, 5 to each other without any difficult mating of 515 826 A method for manufacturing a threaded bolt 1 according to the invention involves producing two shell-shaped bolt halves 4, 5 which are intended to form a common bolt 1 by casting metal or injection molding plastic as above.

Efter att ha åstadkommit de bàda skalformiga bulthalvorna 4, 5, som sträcker sig med sina skal utmed den avsedda bultens längdriktning 7, låter man sammankoppla de båda bulthalvorna 4, 5 med varandra kant 35 mot kant 36. Lämpligen när materialet utgöres av plast àstadkommer man de båda bult- halvorna 4, 5 sammankopplade svängbart 13, 14 förbundna med varandra kring en gemensam svängled 15.After providing the two shell-shaped bolt halves 4, 5, which extend with their shells along the longitudinal direction 7 of the intended bolt, the two bolt halves 4, 5 are allowed to be connected to each other edge 35 to edge 36. Suitably when the material is made of plastic, the two bolt halves 4, 5 pivotally connected 13, 14 connected to each other around a common pivot joint 15.

Man àstadkommer sammanhállande medel 21, 22 hos de båda bulthalvorna 4, 5 i form av utskjutande tappar 21 från den ena bulthalvan 4 och passande häl 22 hos den andra bulthal- van 5.Cohesive means 21, 22 of the two bolt halves 4, 5 are provided in the form of projecting pins 21 from one bolt half 4 and fitting heel 22 of the other bolt half 5.

Uppfinningen är ej begränsad till ovan beskrivna och pà ritningar visade utföringsexempel av bultar och dess framställningssàtt utan kan varieras inom ramen för patentkraven utan att uppfinningstanken fràngàs.The invention is not limited to the above-described exemplary embodiments of bolts and their production shown in the drawings, but can be varied within the scope of the claims without departing from the spirit of the invention.

Claims

515 826 P a t e n t k r a v

Threaded bolt (1) of material which tends to be molded or injection molded and which has a hollow interior (2, 3), characterized in that the bolt (1) is formed by two shell-shaped bolt halves (4, 5), that the bolt (1 ) has a dividing plane (6) extending along the longitudinal direction (7) of the bolt, that the two bolt halves (4, 5) are pivotally connected to each other about a pivot joint (15), (Fig. 1-6), one with a thread ( 9) provided nut (50) is arranged to screw on the interconnected bolt (1; 101) to effect efficient compression of the bolt halves (4, 5; 104, 105) against each other.

Bolt according to Claim 1, characterized in that the pivot joint (15) between the two bolt halves (4, 5) extends along the longitudinal axis (16) of the bolt along one side (17) of the bolt.

Bolt according to one of the preceding claims, characterized in that between the two bolt halves (4, 5) there are means (21, 22) which function to hold the bolt halves together.

Bolt according to claim 3, characterized in that said means consists of pin (21) and heel (22).

Bolt according to claim 4, characterized in that pins (21) projecting outside the edges (23) of one bolt half (4) are attached to the edges (23) of one bolt half (4) at its circumferential wall and that the corresponding number of suitable heels ( 22) are located on the second bolt half (5) at its circumferential wall (24).

Bolt according to one of the preceding claims, characterized in that the bolt is straight or consists of an angular bolt (1) with support stops (27, 28) at respective threaded pin halves (29, 30) projecting and that interruptions (31, 515 826 LA) '7 z .. an gängorna »w 3 * J m1 upJ. 11, 12) are present at the transition (33, 34) / - \ 3 (__: in CL ﬂ) both bolt hubs (4, 5), preferably in the form of an E) '1 in HC cord-like chamfer (31, 32).

Method for the production of a threaded bolt (1) of material which can be cast or injection molded and which has a hollow interior according to one of the preceding claims, characterized in that two shell-shaped bolt halves (4, 5) are produced by casting or injection molding. , which are arranged to form together an intended bolt (1), so as to provide two shell-shaped halves (4, 5) extending along the longitudinal direction (7) of the intended bolt, thereby producing the two bolt halves (4, 5) pivotable ( 13, 14) connected to each other around a common pivot joint (15), which extends along the longitudinal axis (16) of the bolt along one side (17) of the bolt, after which the two bolt halves are connected to each other edge (35) to edge (36) , by means of a screw-on nut (9) which can be screwed on with a thread (9).

Method according to claim 7, characterized in that cohesive means (21, 22) of the two bolt halves (4, 5) are provided in the form of pins (21) projecting from one bolt half (4) and fitting holes (22). in the other half of the bolt (5).