SE416483B

SE416483B - Cover device for a manhole, a gutter inlet or the like

Info

Publication number: SE416483B
Application number: SE7808994A
Authority: SE
Inventors: N-O Eriksson
Original assignee: Varnesforetagen Ab Tierps Jern
Priority date: 1978-08-25
Filing date: 1978-08-25
Publication date: 1981-01-05
Also published as: SE7808994L

Abstract

The invention relates to a cover for a manhole, a gutter inlet or the like, which cover comprises a frame 1 having an internal flange 4, which flange forms an upwardly directed, flat support surface for a lid 6 which can be introduced into the frame. According to the invention, the lid 6, on the edges of its bottom side, is provided with two locking elements, situated one directly in front of the other, which are intended to engage beneath the flange 4, one locking element being constituted by a stationary locking lug 10 and the other by a locking lug 14 which is pivotable about a horizontal axis 12 and which is spring-loaded 18 into a position for engagement beneath the flange 4 such that the locking lug 14, when the lid 6 is inserted in the frame 1, through contact against the flange 4, can be pivoted out of the engagement position and can be pivoted by the spring back 18 into the engagement position after it has passed the flange. <IMAGE>

Description

7808994-3 tet lock, men uppfinningen kan med samma fördel utnyttjas vid ett gal- lerformat lock, t.ex. för en rännstensbrunn. Slutligen visas och be- skrives den invändiga flänsen 4 som en obruten ringfläns, men kan med samma fördel ha formen av kring det rörformade partiets 2 innerperife- ri fördelade klackar, varvid varje klack har en diametralt motstående klack. 7808994-3 tet lid, but the invention can with the same advantage be used with a grid-shaped lid, e.g. for a gutter well. Finally, the inner flange 4 is shown and described as an unbroken annular flange, but can with the same advantage have the shape of lugs distributed around the inner peripheral portion 2 of the tubular portion 2, each lug having a diametrically opposite lug.

Det cirkulära locket 6 uppvisar två under rät vinkel varandra korsande förstärkningsfjädrar_7 och 8, som sträcker sig nedåt från lockets 6 un- dersida. Den ena 7 av dessa förstärkningsfjädrar är vid ena änden för- sedd med en inskärning 9, som upptill begränsas av lockets 6 undersida och nedtill av en låsklack 10. Inskärningen 9 har sådan bredd, att den med relativt stort spel kan taga upp ramens 1 ringfläns 4. vid dcn motsatta änden är förstärkningsfjädern 7 lämpligen utformad som en mot lockets periferi öppen gaffel 11 med i huvudsak parallella gaf- felklor 11' och 11". En axel 12 sträcker sig tvärs över mellanrummet mellan gaffelklorna 11' och 11" och bildar en svängningsaxel för en låsklinka 14. ' Låsklinkan 14 är utformad som cn tvåarmad hävarm med den ena armen 15 riktad radiellt utåt relativt locket 6. Den motsatta, radiellt inåt riktade armen 16 är vid ytteränden utformad med en tvärgående stång 17, som begränsar lâsklinkans 14 ena svängningsläge genom anliggning mot gaffelklornas 11', 11" nedåtriktade kanter. Låsklinkan 14 är belastad mot detta svängningsläge medelst en fjäder 18, lämpligen en trâdfjäder med två skruvlinjeformade partier 19, 20, som omsluter svängningsaxeln 12 på båda sidor om låsklinkan 14. De mot varandra vända ändarna hos dessa två skruvlindade partier 19, 20 är förbundna över ett U-format parti 21 av fjädertråden, under det att fjädertrådsändarna 22 vid nämn- da partiers motsatta ändar är böjda tangentiellt utåt. Fjädern 18 är inspänd mellan locket 6 och låsklinkan 14 på så sätt, att de tangenti- ellt utåtriktade trådändarna 22 ligger an mot en klack 23, som är ut- 7 formad vid lockets 6 undersida mellan gaffelklorna 11', 11", under det att tvärstycket hos det U-formade trådpartiet 21 ligger an mot den upp- åtriktade kanten hos låsklinkans 14 utåtriktade arm 15, lämpligen i en inskärning hos denna. Av fjäderspänningen tvingas således låsklinkan 14 till det svängningsläge, i vilket den tvärgående stången 17 ligger an mot gaffelklorna 11', 11". I detta läge sträcker sig lâsklinkan 14 snett uppåt-utåt och dess tvärskurna ytterände 24 är belägen på ett så- dant avstånd från lockets 6 undersida, att ramens 1 fläns 4 med rela- 7808994-3 tivt stort spel kan tagas upp däremellan.The circular cover 6 has two at right angles intersecting reinforcing springs 7 and 8, which extend downwards from the underside of the cover 6. One 7 of these reinforcing springs is provided at one end with a notch 9, which is limited at the top by the underside of the lid 6 and at the bottom by a locking lug 10. The notch 9 has such a width that it can receive the annular flange of the frame 1 with relatively large play. 4. at the opposite end, the reinforcing spring 7 is suitably formed as a fork 11 open towards the periphery of the lid with substantially parallel fork claws 11 'and 11 ". A shaft 12 extends transversely across the space between the fork claws 11' and 11" and forms a pivot axis for a locking latch 14. The locking latch 14 is formed as a two-armed lever with one arm 15 directed radially outwards relative to the lid 6. The opposite, radially inwardly directed arm 16 is formed at the outer end with a transverse rod 17, which delimits one of the locking latches 14. pivoting position by abutment against the downwardly directed edges of the fork claws 11 ', 11 ". made portions 19, 20, which enclose the pivot shaft 12 on both sides of the locking latch 14. The facing ends of these two helically wound portions 19, 20 are connected over a U-shaped portion 21 of the spring wire, while the spring wire ends 22 at the mentioned since the opposite ends of the parts are bent tangentially outwards. The spring 18 is clamped between the cover 6 and the locking latch 14 in such a way that the tangentially outwardly directed wire ends 22 abut against a lug 23 which is formed at the underside of the lid 6 between the fork claws 11 ', 11 ", while the crosspiece of the U-shaped wire portion 21 abuts the upwardly directed edge of the outwardly directed arm 15 of the locking pawl 14, preferably in a notch thereof.The spring tension thus forces the locking pawl 14 to the pivot position in which the transverse rod 17 abuts the fork claws 11 ', 11 ". In this position the locking latch 14 extends obliquely upwards-outwards and its cross-cut outer end 24 is located at such a distance from the underside of the lid 6 that the flange 4 of the frame 1 with relatively large play can be taken up between them.

När locket 6 lägges ned i ramen 1, föres det snett ned i ramen med den ände hos förstärkningsfjädern 7, som är försedd med lâsklacken 10 främst, så att lâsklacken 10 föres in under ramens 1 fläns 4. Därefter svänges locket 6 ned i ramen, varvid den nedåtriktade, uppåt-utåt sned- ställda kanten 25 hos låsklinkans 14 arm 15 kommer i kontakt med flän- sens 4 övre, inâtriktade hörnkant. Lâsklinkans 14 arm 15 svänges där- vid inåt mot klacken 23 under spänning av fjädern 18 och glider nedåt förbi ramens fläns 4 och, när den passerat denna, svänger den tillba- ka utåt in nedanför flänsen 4 under verkan av fjäderns 18 spänning.When the cover 6 is lowered into the frame 1, it is slid down into the frame with the end of the reinforcing spring 7 provided with the locking lug 10 in front, so that the locking lug 10 is inserted under the flange 4 of the frame 1. wherein the downwardly, upwardly-outwardly inclined edge 25 of the arm 15 of the locking pawl 14 comes into contact with the upper, inwardly directed corner edge of the flange 4. The arm 15 of the locking link 14 is then pivoted inwards towards the lug 23 under tension of the spring 18 and slides downwards past the flange 4 of the frame and, when it has passed this, it swings backwards outwards below the flange 4 under the action of the tension of the spring 18.

Locket kan sedan ej lyftas ut ur ramen 1, eftersom lâsklacken 10 och låsklinkan 14 griper in under ramens fläns 4.The lid can then not be lifted out of the frame 1, since the locking lug 10 and the locking latch 14 engage under the flange 4 of the frame.

För att göra det möjligt att åter lyfta upp locket 6, är detta försett med en öppning 26, som är belägen innanför klacken 23 mellan gaffel- klorna 11', 11". Denna öppning 26 är så stor, att ett don 27, lämpli- gen en kraftig skruvmejsel, kan skjutas in så långt, att dess spets- parti kommer innanför låsklinkans 14 tvärgående stång 17. Genom att svänga eller bända skruvmejseln radiellt inåt tvingas dess spetsparti till anliggning mot den tvärgående stången 17 och därigenom svänges armen 16 och följaktligen låsklinkan 14 från det uppåt-utåt snedställda läget till ett i huvudsak rakt uppåt riktat läge, så att låsklinkans 14 utåtriktade arm 15 går fri från ramens 1 fläns 4 och locket 6 följ- aktligen kan svänges uppåt kring förstärkningsfjäderns 7 motsatta ände och därefter lyftas upp ur ramen 1.In order to make it possible to lift the lid 6 again, this is provided with an opening 26, which is located inside the lug 23 between the fork claws 11 ', 11 ". This opening 26 is so large that a device 27, suitable for By means of a powerful screwdriver, it can be pushed in so far that its tip portion comes inside the transverse rod 17 of the locking latch 14. By swinging or turning the screwdriver radially inwards, its tip portion is forced to abut against the transverse rod 17 and thereby the arm 16 and consequently the locking latch 14 from the upwardly-outwardly inclined position to a substantially straight upwardly directed position, so that the outwardly directed arm 15 of the locking pawl 14 is free from the flange 4 of the frame 1 and the lid 6 can consequently be pivoted upwards around the opposite end of the reinforcing spring 7 window 1.

Modifikationen enligt fig. 4 skiljer sig endast från den ovan beskriv- na utföringsformen därigenom, att ramens fläns 4' ej är utformad med en vertikal inåtriktad kant och en horisontell bottensida, utan har kilformat tvärsnitt med en horisontell, plan, övre sida och en snett nedåt och utåt lutande innersida 4". Låsklacken 10' vid förstärkninga- fjäderns 7' ena ände och låsklinkan 14' vid dess andra ände har därvid tilldelats lämpliga konturer för att på avsett sätt kunna samverka med denna innersida 4" hos ramens fläns 4'. För övrigt är konstruktionen och verkan densamma vid de båda utföringsformerna och torde ej behöva belysas ytterligare.The modification according to Fig. 4 differs only from the embodiment described above in that the frame flange 4 'is not formed with a vertical inwardly directed edge and a horizontal bottom side, but has a wedge-shaped cross section with a horizontal, flat, upper side and an oblique downwardly and outwardly sloping inner side 4 ". The locking lug 10 'at one end of the reinforcing spring 7' and the locking latch 14 'at its other end have thereby been assigned suitable contours in order to be able to co-operate with this inner side 4" of the frame flange 4'. Incidentally, the construction and effect are the same in the two embodiments and should not need to be further elucidated.

De ovan beskrivna utföringsformerna får ej tilldelas någon begränsande verkan, då anordningen enligt uppfinningen kan modifieras i många av- seenden inom ramen för det skyddsomfång, som är definierat i bifogade krav.The embodiments described above must not be assigned any limiting effect, as the device according to the invention can be modified in many respects within the scope of protection, which is defined in the appended claims.

Claims

7808994-3 Patent claims

A device for covering a descent well, a gutter well or the like, which marking comprises a frame (1) with an inner flange (4) or a number of inner projections, which form an upwardly directed, flat support surface (5) for a frame insertable lid (6), which is provided at the edge of its underside. two. opposite locking elements, which are intended to engage under the flange (4) resp. two opposite projections, one locking element being constituted by a stationary locking lug (10) and the other by a locking latch (14) pivotable about a horizontal axis (12), characterized in that the locking latch (14) consists of a two-armed lever-m, which has a first arm (15), which in a first end position extends obliquely upwards ooh outwards from the shaft (12) with its outer end in reading engagement under the flange (4) resp. one pivot, and a second arm (16) extending inwardly from the shaft (12), the locking latch (14) being pivotable to a second end position with its first arm (15) substantially vertical by means of a skewer, a screwdriver or similar device (27), which is insertable into engagement with the second arm (16) through a hole (26) in the lid (6), so that the first arm (15) of the locking pawl (14) is led out of reading engagement under the flange ( 4) resp. the protrusion.

Device according to claim 1, characterized in that the locking latch (14), when the cover (6) is inserted into the frame (1), is pivotable out of the first end position against the action of a spring (18) by abutment against the flange (4) resp. the projection, and is pivotable back to the first end position, after it has passed the flange (4) resp. the protrusion. p 5.

Device according to claim 2 or 2, characterized in that the cover (6) has a reinforcing spring (7) projecting from its underside, which extends across the cover, the locking lug (10) being formed in the reinforcement spring of the cover spring. (7) one end and the locking latch (14) is pivotally mounted at the other end of the reinforcing spring.

Device according to Claim 1, characterized in that the latter end of the reinforcing spring (7) is in the form of an outwardly open fork (44) and that the pivot axis (42) of the locking link (44) extends between the claws (44 ', 44) of the fork. ").

Device according to one of the preceding claims, characterized in that the spring (44) loading the locking clamp (44) is a helically wound spring which encloses the pivot axis (42) of the locking clamp and has at least two tangentially projecting legs. (24, 22), which are clamped between the locking link (44) resp. lid (6).

Device according to claim 1, characterized in that the loading spring (48) comprises two screw-shaped portions (49, 20) which enclose the pivot axis (42) of the locking latch ('14) on opposite sides thereof, and are connected over a U-shaped portion (24), which forms the spring leg cooperating with the locking latch (44).

Device according to one of Claims 4 to 6, characterized in that the inwardly directed arm (46) of the locking link (44) is provided with a transverse rod (47), which determines the first end position of the locking link by abutment against the undersides of the latch. the claws (44 ', 44 ") of the fault. 8..11ordent1crave7, characterized in that the hole (26) in the lid (6) is located between the claws of the fork (44: 44") within the pivot axis (42) of the locking link ('14), wherein the device (27) which can be inserted through the hole extends down inside the transverse bar (47) of the locking pawl (44).