DK168120B1

DK168120B1 - Clamping ring

Info

Publication number: DK168120B1
Application number: DK090390A
Authority: DK
Inventors: Sven Spaanberg
Original assignee: Sjoebo Bruk Ab
Priority date: 1988-08-17
Filing date: 1990-04-10
Publication date: 1994-02-14
Also published as: EP0383884B1; JP2758471B2; AU4057089A; DK90390A; EP0383884A1; FI86904C; WO1990002232A1; JPH03502593A; SE8802915L; FI901848A0; AU616553B2; SE8802915D0; FI86904B; SE461742B; DK90390D0

Description

DK 168120 B1DK 168120 B1

Den foreliggende opfindelse angår en spændering af den i krav 1's indledning angivne art.The present invention relates to a clamping ring of the type specified in the preamble of claim 1.

Sådanne spænderinge kendes eksempelvis fra CH patentskrift 461.391. Fjederkraften hos denne kendte spændering frembringes ved, at ringen består af et fjedrende materiale, som 5 tillader, at den efter sammenpresning i radial retning søger at udvide sig med tilstrækkelig kraft til effektivt at klemme belægningsmaterialet mod brøndens inderside. Da man udnytter selve materialet i spænderingen til at afstedkomme fjederkraften, er det nødvendigt at udforme spænderingen med varierende bredde, hvis den skal afstedkomme samme tryk hele vejen rundt og samtidig bibeholde sin cirkulære form.Such clamping rings are known, for example, from CH patent specification 461,391. The spring force of this known clamping ring is produced by the ring consisting of a resilient material which allows it, after compression in the radial direction, seeks to expand with sufficient force to effectively clamp the coating material against the inside of the well. Since the material in the clamping ring itself is used to produce the spring force, it is necessary to design the clamping ring with varying width if it is to produce the same pressure all the way around and at the same time maintain its circular shape.

1010

Der opstår imidlertid et problem, hvis man udformer spænderingen med varierende bredde, fordi spændekraften i ringens smallere partier med tiden aftager hurtigere end i de tykkere partier. Dette er naturligvis uhensigtsmæssigt, da det er vigtigt, at spænderingen har samme spændekraft hele vejen rundt også efter nogle års brug.However, a problem arises if one designs the clamping ring of varying width because the clamping force in the narrower portions of the ring decreases more rapidly over time than in the thicker portions. This is of course inappropriate, as it is important that the clamping ring has the same clamping force all the way around even after a few years of use.

1515

En spændering med "fjedrende slidser" kendes fra SE fremlæggelsesskrift 306 062 (fig. 8), men denne spændering er ikke delt, men har et foldet parti, der muligvis kan tjene som et slags spændeparti. Da dette parti imidlertid ikke er så højt som resten af ringen og kun udgør en meget lille del af denne, er det enten svært at spænde ringen, eller den giver ikke tilstrækkelig 20 spændekraft.A clamping ring with "resilient slits" is known from SE presentation specification 306 062 (Fig. 8), but this clamping ring is not divided, but has a folded portion which may possibly serve as a kind of clamping portion. However, since this portion is not as high as the rest of the ring and forms only a very small part of it, it is either difficult to tighten the ring or it does not provide sufficient clamping force.

Formålet med den foreliggende opfindelse er at undgå problemerne ved spænderinge af kendt art og at anvise en spændering, som er let at spænde, som frembyder tilstrækkelig spændekraft i det interval, som kræves for at fastklemme enten tynde eller tykke gulvbelægninger i 25 materialer, som eliminerer risikoen for alt for kraftig udfjedring, og som sikrer en god tætning langs hele sin omkreds.The object of the present invention is to avoid the problems of clamping rings of a known type and to provide a clamping ring which is easy to clamp, which offers sufficient clamping force in the range required to clamp either thin or thick floor coverings in materials which eliminate the risk of excessive suspension, which ensures a good seal along its entire circumference.

Dette opnås ifølge opfindelsen ved den i krav 1 anviste udformning.This is achieved according to the invention by the design indicated in claim 1.

30 Opfindelsen skal i det følgende forklares nærmere i forbindelse med tegningen, hvor fig. 1 viser i perspektiv og delvis gennemskåret en del af en spændering ifølge opfindelsen placeret i indløbsdelen af en gulvbrønd, fig. 2 samme, men uden gennemskæringer, 35 fig. 3 den i fig. 1 viste spænderingsdel set fra siden, fig. 4 set fra oven en del af den i fig. 1 viste spændering i radialt sammentrykket tilstand, fig. 5 samme, men ubelastet, fig. 6 set fra siden spænderingen inden dens endedele sammenføres, DK 168120 B1 2 fig. 7 set fra oven og delvis gennemskåret en del af en anden udførelsesform for spænderingen ifølge opfindelsen, fig. 8 samme set inde fra ringens centrum, fjg. 9 et snit gennem den i fig. 7 viste spændering placeret i en gulvbrønd, og 5 fig. 10 set fra oven og delvis gennemskåret en del af en tredje udførelsesform for spænderingen ifølge opfindelsen.The invention will be explained in more detail below in connection with the drawing, in which fig. 1 shows in perspective and partly in section a part of a clamping ring according to the invention located in the inlet part of a floor well, fig. 2 the same, but without cross-sections, fig. 3 the one in fig. 1 seen from the side, fig. 4 is a top view of a part of the device shown in FIG. 1 in radially compressed condition, fig. 5 the same, but unloaded, fig. 6 is a side view of the clamping ring before its end parts are joined together, DK 168120 B1 2 fig. Fig. 7 is a top view and partially sectioned part of another embodiment of the clamping ring according to the invention; 8 same seen from inside the center of the ring, fig. 9 is a section through the device shown in FIG. 7 placed in a floor well, and fig. 10 seen from above and partly in section a part of a third embodiment of the clamping ring according to the invention.

De på tegningen viste spænderinge 1,2 og 3 er beregnet til at fastklemme et belægningsmateriale fortrinsvis et gulvbelægningsmateriale 4 mod undersiden 5 af en brønd, fortrinsvis en 10 gulvbrønd 6. Gulvbelægningsmaterialet 4 er foldet ned i brøndens 6 indløbsdel, og hensigten med at klemme materialet 4 fast er at hindre skader som følge af, at vand trænger ind under gulvbelægningen.The clamping rings 1, 2 and 3 shown in the drawing are intended for clamping a coating material, preferably a floor covering material 4 against the underside 5 of a well, preferably a floor floor well 6. The floor covering material 4 is folded down into the inlet part of the well 6, and the intention 4 fixed is to prevent damage due to water penetrating under the floor covering.

De viste spænderinge 1, 2 eller 3 er delt et sted og kan sammentrykkes mod virkningen af en 15 fjederkraft, som er beregnet til, når ringen er monteret i brønden 6, at udvide spænderingen i radial retning, til den ligger an mod gulvbelægningsmaterialet og klemmer dette mod brøndens inderside 5.The clamping rings 1, 2 or 3 shown are divided in one place and can be compressed against the action of a spring force, which is intended, when the ring is mounted in the well 6, to extend the clamping ring in the radial direction until it abuts the floor covering material and clamps this towards the inside of the well 5.

For at spænderingen 1, 2 eller 3 kan udøve en passende fjederkraft, som bibeholdes i lang tid 20 uden at være så kraftig, at der er risiko ved håndtering af spænderingen, og som er i stand til at fastklemme gulvbelægningsmaterialet 4, selv om dette krymper, når det har været belastet en vis tid, og også selv om spænderingen er fremstillet af et plastmateriale, som krymper efter en vis tid, frembringes fjederkraften af et fjederorgan, fortrinsvis en spiralfjeder 7, som er monteret mellem to endedele 8 og 9. Denne spiralfjeder 7 kan spændes, ved at endedelene 8,9 presses 25 i perifer retning (pile A i fig. 4) mod hinanden.In order for the clamping ring 1, 2 or 3 to exert a suitable spring force which is maintained for a long time 20 without being so strong that there is a risk of handling the clamping ring and which is able to clamp the floor covering material 4, even if it shrinks , when it has been loaded for a certain time, and also even though the clamping ring is made of a plastic material which shrinks after a certain time, the spring force is produced by a spring member, preferably a coil spring 7, which is mounted between two end parts 8 and 9. coil spring 7 can be tensioned by pressing the end parts 8,9 25 in the peripheral direction (arrows A in Fig. 4) against each other.

For at spænderingen 1, 2 eller 3 skal ligge an mod gulvbelægningsmaterialet hele vejen rundt, er endedelene 8,9 udformet på en sådan måde, at de sammen danner en ubrudt yderperiferi ved ringens deleområde.In order for the clamping ring 1, 2 or 3 to abut against the floor covering material all the way around, the end parts 8,9 are designed in such a way that together they form an unbroken outer periphery at the part area of the ring.

3030

For at sikre at endedelene 8,9 ikke føres fra hinanden så langt, at spiralfjederen falder ud fra sin placering mellem endedelene, er disse forsynet med spændeflader 11,12, som er beregnet til ved samvirke at hindre yderligere adskillelse.To ensure that the end portions 8,9 are not moved apart so far that the coil spring falls out from its position between the end portions, these are provided with clamping surfaces 11,12, which are intended to cooperate to prevent further separation.

35 Spiralfjederen 7 er hensigtsmæssigt styret langs en del af sin længde ved indgreb i huller 13,14 i endedelene 8,9. Hullerne 13,14 strækker sig et stykke ind i endedelene 8,9 og forløber i perifer retning.The coil spring 7 is suitably guided along a part of its length by engaging holes 13,14 in the end parts 8,9. The holes 13,14 extend a bit into the end portions 8,9 and extend in the peripheral direction.

DK 168120 B1 3DK 168120 B1 3

Spiralfjederen 7 forløber gennem et mellem endedelene 8,9 udstrakt rum 15, som er lukket i hvert fald ved spænderingens 1, 2 eller 3 overside 16 og inderside 17 for at hindre indtrængning af urenheder i det nævnte rum, hvilket kunne modvirke fjederens funktion eller give anledning til andre problemer.The coil spring 7 extends through a space 15 extending between the end parts 8, 9, which is closed at least at the upper side 16 and inside 17 of the clamping ring 1, 2 or 3 in order to prevent the penetration of impurities into said space, which could counteract the function of the spring or cause other problems.

55

Spiraltjederen 7 er foretrukket fremstillet af fjederstål, og dens yderdiameter overstiger hensigtsmæssigt spænderingens 1, 2 eller 3 halve bredde. Desuden er spiralfjederens 7 yderdiameter lig med seks gange fjederens trådtykkelse. En således dimensioneret spiralfjeder har vist sig særlig fordelagtig, for så vidt angår tilstrækkelig spændekraft og nødvendig fjedrings-10 vej.The spiral tether 7 is preferably made of spring steel, and its outer diameter suitably exceeds the half width of the clamping ring 1, 2 or 3. In addition, the outer diameter of the coil spring 7 is equal to six times the wire thickness of the spring. A coil spring thus dimensioned has proved to be particularly advantageous in terms of sufficient clamping force and necessary suspension path.

Spiralfjederen 7 er endvidere således dimensioneret, at den afstedkommer tilstrækkelig fjederkraft til effektivt af fastklemme belægningsmateriale 4 med en tykkelse på 1,5-2,5 mm mod indersiden 5 af brønden 6.The coil spring 7 is further dimensioned such that it produces sufficient spring force to effectively clamp coating material 4 with a thickness of 1.5-2.5 mm against the inside 5 of the well 6.

1515

Endedelene 8,9 har foretrukket perifert rettede styrepartier 18,19, som er udformet til at styre hinanden under spænderingens 1,2 eller 3 sammenpresning eller udvidelse.The end portions 8,9 preferably have circumferentially directed guide portions 18,19 which are designed to guide each other during the compression or expansion of the clamping ring 1,2, 3 or 3.

Den i fig. 1-6 viste udførelsesform har i perifer retning forløbende styrepartier 18,19, og det ene 20 parti 19 har en i det væsentlige L-formet profil for at danne et indre ben 20 og et øvre ben 21.The device shown in FIG. 1-6 have circumferentially extending guide portions 18,19, and one portion 19 has a substantially L-shaped profile to form an inner leg 20 and an upper leg 21.

Det indre ben 20 samvirker med en indre styreflade 22 på det andet parti 18 og danner en indervæg, som afskærmer rummet 15 fra området 23 radialt inden for spænderingen 1. Det øvre ben 21 samvirker med en øvre styreflade 24 på det andet parti og danner et tag over rummet 15.The inner leg 20 cooperates with an inner guide surface 22 on the second portion 18 and forms an inner wall which shields the space 15 from the area 23 radially within the clamping ring 1. The upper leg 21 cooperates with an upper guide surface 24 on the second portion and forms a roof over the room 15.

2525

Forneden har styrepartiet 18 hensigtsmæssigt en rille 25 og styrepartiet 19 en i rillen indgribende tunge 26 for at sikre, at styrepartieme opretholder deres indbyrdes samvirke.At the bottom, the guide portion 18 suitably has a groove 25 and the guide portion 19 an engaging tongue 26 in the groove to ensure that the guide portions maintain their mutual cooperation.

I den øvre styreflade kan der være et perifert langsgående spor 27 med en endekant, som 30 danner den ene endedels 8 spærreflade 12, medens spærrefladen 11 på den anden endedel 9 dannes af en i sporet 27 indgribende klo 28.In the upper guide surface there may be a peripheral longitudinal groove 27 with an end edge which forms the locking surface 12 of one end part 8, while the locking surface 11 on the other end part 9 is formed by a claw 28 engaging in the groove 27.

Spænderingens 1 yderside 29 har en rundtgående anlægsspids 30, der forløber ubrudt også ved endedelene 8,9, og via hvilken ydersiden 29 ligger an mod belægningsmaterialet 4.The outer side 29 of the clamping ring 1 has a circumferential abutment tip 30 which extends uninterrupted also at the end parts 8,9, and via which the outer side 29 abuts against the coating material 4.

3535

Hullerne 13,14 for spiralfjederen 7 kan være åbne mod spænderingens 1 yderside 29, for at fjederen kan nå ud gennem disse åbninger 31,32. Herved kan spiralfjederen 7 direkte ligge an mod gulvbelægningsmaterialet 4 og påvirke dette direkte.The holes 13,14 for the coil spring 7 can be open against the outside 29 of the clamping ring 1, so that the spring can reach out through these openings 31,32. Hereby the coil spring 7 can directly abut against the floor covering material 4 and affect this directly.

DK 168120 B1 4DK 168120 B1 4

Spænderingen 1,2 eller 3 er hensigtsmæssigt fremstillet således, at den - inden spiralfjederen 7 monteres og endedelene bringes i kontakt med hinanden - har en oprindelig form, hvor endedelene overlapper hinanden så meget (stykket C i fig. 6), at ringen i den oprindelige form har en udvendig diameter D, som ligger mellem diametrene for gulvbrønden inden for gulvbelæg-5 ningsmaterialet med henholdsvis et tykt og tyndt belægningsmateriale 4.The clamping ring 1, 2 or 3 is suitably made so that - before the coil spring 7 is mounted and the end parts are brought into contact with each other - it has an original shape, the end parts overlapping each other so much (piece C in Fig. 6) that the ring in the original shape has an outer diameter D which lies between the diameters of the floor well within the floor covering material with a thick and thin covering material 4, respectively.

Spænderingen 2 ifølge fig. 7-9 adskiller sig fra spænderingen 1 blot ved en noget anden udformning af endedelene 8,9. Ved den i fig. 7-9 viste udføreisesform har endedelen 9 i det væsentlige U-formet profil, medens endedelen 8 har plant profil og er beregnet til at gribe ind i den 10 førstnævnte del 9.The clamping ring 2 according to fig. 7-9 differs from the clamping ring 1 only by a somewhat different design of the end parts 8,9. In the case shown in FIG. 7-9, the end part 9 has a substantially U-shaped profile, while the end part 8 has a flat profile and is intended to engage in the first-mentioned part 9.

Ved den i fig. 10 viste spændering 3 har den ene endedel 9 ligeledes U-formet profil, medens den anden endedel 8 har plant profil. Spænderingen 3 adskiller sig fra spænderingen 2 bl.a. ved, at kun endedelen 9 har et perifert hul 14 for spiralfjederen 7. Fjederens 7 anden ende 15 ligger an mod endefladen 33 på den anden endedel 8.In the case shown in FIG. 10, one end part 9 also has a U-shaped profile, while the other end part 8 has a flat profile. The clamping ring 3 differs from the clamping ring 2 i.a. in that only the end portion 9 has a peripheral hole 14 for the coil spring 7. The other end 15 of the spring 7 abuts against the end face 33 of the second end portion 8.

Spænderingen 1, 2 eller 3 monteres hensigtsmæssigt, ved at man fører den skråt ned i gulvbrønden 6, indtil det parti, som ligger diametralt over for endedelene 8,9, ligger an mod gulvbelægningsmaterialet, medens man holder i endedelene 8,9 over brønden. På denne måde kan 20 man støtte sig mod brønden 6, når man presser endedelene 8,9 mod hinanden og derved spænder spiralfjederen 7. Endedelene 8,9 presses mod hinanden, indtil spænderingens 1, 2 eller 3 udvendige diameter er mindre end brøndens 6 indvendige diameter inden for gulvbelægningsmaterialet 4, hvorefter resten af ringen føres på den tilsigtede plads i brønden. Når spænderingen 1, 2 eller 3 slippes, vii spiralfjederen 7 udvides, indtil ringen kommer i anlæg 25 mod belægningsmaterialet 4 hele vejen rundt. Efter monteringen vil spænderingen bibeholde sit tryk mod belægningsmaterialet, også selv om dette krymper, fordi spiralfjederen 7 i så fald udvider spænderingen tilsvarende.The clamping ring 1, 2 or 3 is conveniently mounted by inserting it obliquely into the floor well 6 until the portion which is diametrically opposite the end portions 8,9 abuts the floor covering material while holding the end portions 8,9 above the well. In this way one can lean against the well 6 when pressing the end parts 8,9 against each other and thereby tension the coil spring 7. The end parts 8,9 are pressed against each other until the outer diameter of the clamping ring 1, 2 or 3 is smaller than the inner diameter of the well 6 diameter within the floor covering material 4, after which the rest of the ring is passed to the intended place in the well. When the clamping ring 1, 2 or 3 is released, the coil spring 7 is extended until the ring comes into abutment 25 against the coating material 4 all the way around. After mounting, the clamping ring will maintain its pressure against the coating material, even if this shrinks, because in that case the coil spring 7 expands the clamping ring correspondingly.

Opfindelsen begrænses ikke af de nævnte og på tegningen viste udførelsesformer. Som ek-30 sempel på yderligere varianter kan nævnes, at spænderingen kan være fremstillet af plast eller et andet hensigtsmæssigt materiale, og at den hensigtsmæssigt er fjedrende, spænderingen kan være delt mere end et sted, spiralfjederen kan erstattes af et andet fjederorgan indsat mellem endedelene, fjederorganet kan være af fjederstål, som hensigtsmæssigt er rustfrit, eller et andet passende materiale, flere fjederorganer kan være monteret mellem endedelene, spær-35 refladerne kan dannes på anden måde end vist, brønden kan være en gulvbrønd med eller uden vandlås eller en helt anden brøndtype, og belægningsmaterialet kan være andet end gulvbelægningsmateriale, eksempelvis tagbelægningsmateriale, hvis brønden er en tagbrønd.The invention is not limited by the embodiments mentioned and shown in the drawing. As an example of further variants it can be mentioned that the clamping ring can be made of plastic or another suitable material and that it is suitably resilient, the clamping ring can be divided more than one place, the coil spring can be replaced by another spring member inserted between the end parts , the spring means may be of spring steel, which is suitably stainless, or another suitable material, several spring means may be mounted between the end portions, the barrier surfaces may be formed in a manner other than shown, the well may be a floor well with or without water trap or a whole other type of well, and the covering material may be other than floor covering material, for example roofing material, if the well is a roof well.

Claims

Clamping ring for holding covering material, in particular floor covering material (4) against the inside (5) of a well, in particular a floor well (6), which clamping ring (1, 2 or 3) is divided and compressible in radial direction against the action of a spring force , which is intended, when the ring is mounted in the well, to extend the clamping ring (1, 2 or 3) in the radial direction until it abuts the coating material (4) and clamps it against the inside (5) of the well (6). , characterized in that the expanding spring force (1, 2 or 3) expanding spring force is produced by at least one spring means, preferably a coil spring (7), which is mounted between two end parts (8, 9) of the tension ring, which spring means (7) is compressible, in that the end portions (8, 9) are pressed against each other, and wherein one end portion (9) has a tongue and the other end portion a groove (25) for receiving said tongue.

Clamping ring according to claim 1, characterized in that one end part (9) has a holding claw (28) and the other end part (8) a groove (27) for receiving the holding claw (28), wherein said groove (27) has a locking surface (12) for the claw (28) to prevent the tongue of the first-mentioned end part (9) from leaving the groove (25) in the second end part (8).

Clamping ring according to Claim 1 or 2, characterized in that the end parts (8, 9) are designed such that they together form an unbroken outer periphery at the part area of the clamping ring (1, 2 or 3).

Clamping ring according to claims 1-3, characterized in that at least one of the end parts (8, 9) of the clamping ring (1, 2 or 3) has peripheral longitudinal holes (13, 14) for the spring means (7).