DK156550B - Surface cleaning apparatus and blade therefor - Google Patents
Surface cleaning apparatus and blade therefor Download PDFInfo
- Publication number
- DK156550B DK156550B DK387887A DK387887A DK156550B DK 156550 B DK156550 B DK 156550B DK 387887 A DK387887 A DK 387887A DK 387887 A DK387887 A DK 387887A DK 156550 B DK156550 B DK 156550B
- Authority
- DK
- Denmark
- Prior art keywords
- blade
- cleaning apparatus
- surface cleaning
- egg
- disc
- Prior art date
Links
Landscapes
- Cleaning In General (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Sink And Installation For Waste Water (AREA)
Description
DK 156550 BDK 156550 B
Opfindelsen angâr et overfladerensende apparat med et blad med ægge og et drivmiddel til at fâ bladet til at udfore en kredsende bevægelse i et plan, som ho-vedsageligt er parallelt med bladets generelle plan. Med 5 udtrykket "kredsende bevægelse" menes der heri en trans-latorisk bevægelse i en hovedsagelig cirkulær, lukket bane.The invention relates to a surface cleaning apparatus having a blade with eggs and a propellant for causing the blade to perform an orbital motion in a plane substantially parallel to the general plane of the blade. By the term "orbital motion" is meant herein a translational motion in a substantially circular, closed path.
Et apparat af den her nævnte art er beskrevet i EP patentskrift nr. 0 048 386. Dette apparat omfatter 10 et, eventuelt to-delt, blad, som har to parallelle mod-stâende kanter med ægge og er monteret med flere skruer.An apparatus of the kind mentioned herein is disclosed in European Patent Specification No. 0 048 386. This apparatus comprises an, optionally two-piece, blade having two parallel opposed edges with eggs and mounted with multiple screws.
Apparatet ifolge den foreliggende opfindelse er ejendommeligt ved, at bladet har form af en hovedsagelig cirkulær skive med en eller flere ægge langs periferien, 15 og at der findes et organ til montering af bladet ved dets center. Bladet kan hâve én ud af mange konkrete ud~ formninger, ait efter den aktuelle anvendelse.The apparatus according to the present invention is characterized in that the blade is in the form of a substantially circular disc with one or more edges along the periphery, and that a means is provided for mounting the blade at its center. The blade can have one of many concrete designs depending on the actual application.
I forhold til ovennævnte EP-skrift opnàs der her-ved i kraft af et enkelt monteringsorgan, eksempelvis en 20 skrue eller en art bajonetkobling, at bladet let, hur-tigt og enkelt kan udskiftes med ét der passer til an-vendelsen, samt storre frihed ved apparatets brug, idet det er æg hele vejen rundt om bladet og ikke kun pâ to modstâende sider.In relation to the aforementioned EP specification, hereby, by means of a single mounting means, for example a screw or a type of bayonet coupling, the blade can be easily, quickly and easily replaced with one suitable for use, and larger freedom from using the appliance, as there are eggs all around the blade and not just on two opposing sides.
25 Bladet kan ifolge udf0relsesformer for opfindel sen være cirkulært med en enkelt cirkulær æg eller poly-gonalt (eksempelvis 12-sidet) med hver af de lige kanter udformet med en æg. Den skærende virkning foroges ifolge nogle udforelsesformer for opfindelsen ved en speciel 30 udformning af æggen, eksempelvis ved at udforme den sav-takket eller ved at udforme en grat pâ den eller begge dele.According to embodiments of the invention, the blade may be circular with a single circular egg or polygonal (e.g. 12-sided) with each of the straight edges formed with an egg. The cutting effect is augmented according to some embodiments of the invention by a special design of the egg, for example by forming the saw-tooth or by forming a grate on it or both.
Bladet er ved brug monteret pâ et drev, som er i stand til at udfore den onskede kredsende bevægelse. Sâ-35 danne drev er allerede kendt og bruges eksempelvis i rystepudsere. Generelt omfatter sâdanne drev en elektro-The blade is mounted on a drive capable of performing the desired circular motion. Such drives are already known and are used, for example, in shakers. Generally, such drives include
DK 156550 BDK 156550 B
2 motor, som er anbragt i et hovedsagelig cylindrisk hus med et hândtag, som ved brug gribes af operatoren. En gearkasse bruges til at omforme motorens roterende ud-gangsbevægelse til en kredsende bevægelse, dette medfo-5 rer som oftest en drejning pà 90°. Det generelle plan for bladet er sâledes parallelt med det cylindriske hus' akse.2 motor, which is arranged in a mainly cylindrical housing with a handle, which in use is gripped by the operator. A gearbox is used to transform the rotary output movement of the motor into a circular motion, which usually results in a 90 ° turn. The general plane of the blade is thus parallel to the axis of the cylindrical housing.
Bladet kan være stift monteret pâ drevet, men i praksis er det fortrinsvis monteret fleksibelt, idet 10 dette hjælper operatoren med ikke at gennemtrænge over-fladen under rensning, hvilket kan ske hvis bladet ikke holdes parallelt med overfladen. Sâledes kan bladet fastg0res mod en skive af gummi eller andet materiale, eller drevet kan omfatte et "gummipudedrev" som bâde re-15 ducerer vibrationer og giver en betragtelig bevægelighed af bladet i forhold til effektenheden. En fjedermonte-ring kunne ogsâ bruges med en spiralfjeder til at trans-mittere drevet.The blade may be rigidly mounted on the drive, but in practice it is preferably flexibly mounted, this helping the operator not to penetrate the surface during cleaning, which can happen if the blade is not held parallel to the surface. Thus, the blade may be secured to a disc of rubber or other material, or the drive may comprise a "rubber cushion drive" which both reduces vibration and provides considerable movement of the blade relative to the power unit. A spring mounting ring could also be used with a coil spring to transmit the drive.
Dette problem med gennemtrængning af overfladen 20 under afrensning reduceres if0lge nogle udf0relsesformer for opfindelsen ved at opdele bladet, da dette vil oge selve bladets fleksibilitet. Denne opdeling kan opnâs ved at danne flere radielle spalter gâende indad mod centrum fra periferien. I et mangekantet blad kan hver 25 del med sin æg skilles fra resten af sâdan en spalte. Spalterne er typisk 1 mm brede.According to some embodiments of the invention, this problem of penetration of the surface 20 during cleansing is reduced by dividing the blade, as this will increase the flexibility of the blade itself. This division can be achieved by forming several radial slots going inward toward the center from the periphery. In a multi-edged leaf, each 25 part with its egg can be separated from the rest of such a slit. The slots are typically 1 mm wide.
Bladene kan udfores i stâl, eksempelvis rustfrit stâl, eller plast. Bladenes generelle fleksibilitet for-bedres ifolge nogle udforelsesformer for opfindelsen ved 30 at fremstille dem af et fleksibelt materiale sâsom fje-derstâl eller endog hârde plastmaterialer sâsom polycar-bonat. Bladets periferi kan være hærdet for at forbedre slibeegenskaberne, eller den kan være belagt med carbi-der for at give en æg med lang levetid.The blades can be made of steel, for example stainless steel or plastic. The general flexibility of the blades is improved according to some embodiments of the invention by producing them from a flexible material such as spring steel or even hard plastic materials such as polycarbonate. The periphery of the blade may be hardened to improve the abrasive properties, or it may be coated with carbides to provide a long-lived egg.
35 Brugen af fleksible blade muliggor tilforing af en frem- og tilbagegâende bevægelse til bladet, sâvel 335 The use of flexible blades allows feeding of a reciprocating motion to the blade, as well as 3
DK 156550 BDK 156550 B
som den ovenfor beskrevne kredsende bevægelse. Sâdan en frem- og tilbagegâende bevægelse vil være i en retning vinkelret pâ skivens generelle plan. Dette bevirker ef-fektivt at den kredsende bevægelse i stedet for at fo-5 regâ i et enkelt plan foregâr i et plan, som bevæger sig frem og tilbage, mod og væk fra den overflade, som bli-ver renset. Fleksible blade kan optage disse bevægelser og derved fâ en yderligere skærende effekt under bladpe-riferiens radielle bevægelser.such as the orbital motion described above. Such a reciprocating motion will be in a direction perpendicular to the general plane of the disc. This effectively causes the orbital motion, rather than prevailing in a single plane, to occur in a plane moving back and forth, toward and away from the surface being cleansed. Flexible blades can absorb these movements and thereby have a further cutting effect during the radial movements of the leaf periphery.
10 Selvom apparatet ifolge opfindelsen forst og fremmest er beregnet til afrensning af vægbeklædning sâ-som tapet, er det indlysende, at det kan finde mange an-vendelser sâsom fjernelse af maling eller lak, fjernelse af gulvbelægning sâsom vinylfliser, generel fjernelse af 15 kedelsten i industrien, fjernelse af vejoverflader forud for nybelægning og begroningsf jernelse pâ bâde.10 Although the apparatus according to the invention is primarily intended for cleaning wall coverings such as wallpaper, it is obvious that it can find many uses such as removal of paint or varnish, removal of floor covering such as vinyl tiles, general removal of 15 scales. industry, road surface removal prior to paving and both ground removal.
Opfindelsen angâr ogsâ et blad til et overflade-rensende apparat ifolge opfindelsen. Sâdanne blade er angivet i krav 13-17.The invention also relates to a blade for a surface-cleaning apparatus according to the invention. Such leaves are specified in claims 13-17.
20 For at forklare opfindelsen bedre vil udforelses- eksempler nu blive beskrevet med henvisning til den ske-matiske tegning i hvilken: fig. 1 er et sidebillede af et overfladerensende apparat ifolge opfindelsen, 25 fig. 2, 3 og 4 planbillede, tværsnit og detalje af tværsnittet henholdsvis af, en forste udforelse af et blad til et overfladerensende apparat ifelge opfindelsen, fig. 5, 6 og 7 billeder svarende til henholdsvis 30 fig. 2, 3 og 4, visende en anden udforelse, fig. 8, 9 og 10 billeder svarende til fig. 2, 3 og 4, visende en tredie udforelse, fig. 11 planbillede af en fjerde udforelse af et blad til brug i det overfladerensende apparat ifolge op-35 findelsen, fig. 12 og 13 tværsnit af bladet i fig. il som viser det fremstillede profil (fig. 12) og profilet under brug (fig. 13), 420 In order to better explain the invention, exemplary embodiments will now be described with reference to the schematic drawing in which: FIG. 1 is a side view of a surface cleaning apparatus according to the invention; FIG. Figures 2, 3 and 4 show a plan view, cross-section and detail of the cross-section, respectively, of a first embodiment of a blade for a surface-cleaning apparatus according to the invention; 5, 6 and 7, respectively, corresponding to 30 fig. 2, 3 and 4, showing another embodiment; 8, 9 and 10 are images similar to FIG. 2, 3 and 4, showing a third embodiment; 11 is a plan view of a fourth embodiment of a blade for use in the surface cleaning apparatus according to the invention; FIG. 12 and 13 are cross sections of the blade of FIG. il showing the manufactured profile (Fig. 12) and the profile in use (Fig. 13), 4
DK 156550 BDK 156550 B
fig. 14, 15 og 16 billeder svarende til fig. il, 12 og 13 henholdsvis, visende en femte udforelse, fig. 17, 18 og 19 billeder svarende til fig.FIG. 14, 15 and 16, similar to FIG. 11, 12 and 13 respectively, showing a fifth embodiment; 17, 18 and 19 are images similar to FIG.
11, 12 og 13, henholdsvis, visende en syvende udforel-5 se, fig. 20 og 21 billeder svarende til fig. il og 12 henholdsvis, visende en syvende udforelse, fig. 22 et forstorret tværsnit af æggen af udfo-relsesformen i fig. 20 og 21, 10 fig. 23 et eksploderet tværsnit af et sammensat blad til brug i et overfladerensende apparat ifolge op-findelsen, fig. 24 et eksploderet tværsnit af et stift mon-teret ringformet blad til brug i et overfladerensende 15 apparat ifolge opfindelsen, fig. 25 et tværsnit af det samlede System fra fig. 24, og fig. 26 en del af holderen til det ringformede blad i fig. 24 set nedefra.11, 12 and 13, respectively, showing a seventh embodiment; 20 and 21 are similar to FIG. 1 and 12 respectively, showing a seventh embodiment; 22 is an enlarged cross-sectional view of the egg of the embodiment of FIG. 20 and 21, 10 FIG. 23 is an exploded cross-section of a composite blade for use in a surface cleaning apparatus according to the invention; FIG. 24 is an exploded cross-section of a rigidly mounted annular blade for use in a surface cleaning apparatus according to the invention; FIG. 25 is a cross-sectional view of the overall System of FIG. 24, and FIG. 26 is a portion of the holder for the annular blade of FIG. 24 seen from below.
20 I fig. 1 er vist et typisk overfladerensende ap parat ifolge opfindelsen. Apparatet omfatter et hovedsa-geligt cylindrisk hus 1, som indeholder en elektromo-tor, hvorfra drevet gâr til en gearkasse 2. Gearkassen drejer motorens roterende udgangsbevægelse 90° og omfor-25 mer den til en kredsende bevægelse i et plan, som er vinkelret pâ tegningens. Sâdanne gearkasser er velkendte og vil ikke blive beskrevet i detaljer. Det er tilstræk-keligt at sige, at nâr motoren er tændt udforer en ud-gangsknast 3 en kredsende bevægelse i et plan vinkel-30 ret pà tegningens. Der er en ikke vist kontakt til at tænde og slukke motoren. Under brug kan brugeren gribe om huset l eller der kan, ved storre storrelser, være et indbygget hândtag.In FIG. 1, a typical surface cleaning apparatus is shown in accordance with the invention. The apparatus comprises a substantially cylindrical housing 1 which contains an electromotor from which gear drives to a gearbox 2. The gearbox rotates the rotary output motion of the engine 90 ° and converts it into a circular motion in a plane perpendicular to the the drawing. Such gearboxes are well known and will not be described in detail. Suffice it to say that when the engine is switched on, an output cam 3 performs a circular motion in a plane perpendicular to the drawing. There is a not shown switch to turn the engine on and off. During use, the user may grip the housing 1 or, for larger sizes, may be a built-in handle.
Fastgjort til knasten 3 er der et blad 4 i 35 form af en hovedsagelig cirkulær skive, som har en eller flere ægge langs periferien. Forskellige udformninger afAttached to the cam 3 is a blade 4 in the form of a substantially circular disk having one or more eggs along the periphery. Different designs of
DK 156550 BDK 156550 B
5 blade vil blive omtalt detaljeret nedenfor. Skiven har en central âbning, ved hvilken den placeres pâ knasten 3 ved hjælp af en boit 5.5 leaves will be discussed in detail below. The disc has a central aperture by which it is placed on the cam 3 by means of a boot 5.
Nèr motoren er tændt udforer skiven en kredsende 5 bevægelse i et plan vinkelret pâ tegningens. Nâr apparatet bruges placerer operatoren bladet fladt mod den overflade, som skal afrenses og bladets kredsende bevægelse i væggens plan renser hurtigt belægningen af. Apparatet kan bruges vâdt eller tort.When the engine is switched on, the disc performs a circular motion in a plane perpendicular to the drawing. When using the apparatus, the operator places the blade flat against the surface to be cleaned and the blade's circular motion in the plane of the wall quickly cleans the coating. The appliance can be used wet or dry.
10 Det ses at en vis fleksibilitet i bladet vil være fordelagtig ved at reducere risikoen for at det graver sig ned i overfladen. Nogle udformninger af fleksible blade vil blive omtalt. Endvidere kan bladet være flek-sibelt monteret i forhold til drevet. Dette kan opnâs 15 ved at udfore knasten 3 i modstandsdygtigt, fleksibelt materiale sâsom gummi som et "blodt" drev eller simpelt-hen ved at udfore knasten i stâl, aluminium eller lig-nende hârdt materiale og anbringe en mellemskive af fleksibelt materiale sâsom plast eller gummi mellem bla-20 det og knasten.10 It is seen that some flexibility in the blade will be advantageous in reducing the risk of digging into the surface. Some designs of flexible blades will be discussed. Furthermore, the blade may be flexibly mounted relative to the drive. This can be achieved by performing the cam 3 in resilient, flexible material such as rubber as a "blood" drive or simply by carrying the cam in steel, aluminum or similar hard material and affixing a flexible plastic intermediate disk such as plastic or rubber between the blade and the cam.
En konisk skærm 6, som kan være lavet af plast, er fastgjort til gearkassens h.us og beskytter operatoren mod bladet. Tilstedeværelsen af skærmen forhindrer ogsà, at bladet bliver vippet for meget i forhold til den fo-25 retrukne operationsstilling parallelt med overfladen, hvorved den yderligere forhindrer, at overfladen odelæg-ges pâ grund af skodeslos brug af apparatet.A conical shield 6, which may be made of plastic, is attached to the housing of the gearbox and protects the operator from the blade. The presence of the screen also prevents the blade from being tilted too much in relation to the preferred operating position parallel to the surface, thereby further preventing the surface from being damaged due to the reckless use of the apparatus.
Den kredsende bevægelse som bladet udforer nâr apparatet er i brug stammer fra en konventionel mekanis-30 me, som ikke vil blive beskrevet detaljeret. Nogle typer af sâdanne mekanismer fâr bladet til at rotere eller præcessere udover den kredsende bevægelse, og denne virkning kan være onskelig under nogle omstændigheder.The circular motion that the blade performs when the apparatus is in use stems from a conventional mechanism which will not be described in detail. Some types of such mechanisms cause the blade to rotate or tighten beyond the orbital motion, and this effect may be desirable in some circumstances.
For at forhindre denne rotation især ved opstart kan der 35 være midler til at forhindre rotation af bladet, og en mâde at udf0re dette pâ er vist pâ fig. 1. Mekanismen 6In order to prevent this rotation especially at start-up, there may be means for preventing rotation of the blade and a way of doing this is shown in FIG. 1. Mechanisms 6
DK 156550 BDK 156550 B
omfatter en spiralfjeder 7, som er fastgjort ved sin ene ende til huset 1 og gâr parallelt med bladets ak-se, gennem en àbning 8 i skærmen 6 for at ende umid-delbart bag bladet 4. En arm 9 er fastgjort bag pâ 5 bladet og har en lille hage 10, som gâr ind i enden af fjederen. En lignende effekt kan opnàs ved at standse hagen 10 ud af selve bladet.comprises a coil spring 7, which is secured at one end to the housing 1 and runs parallel to the axis of the blade, through an opening 8 in the screen 6 to terminate immediately behind the blade 4. An arm 9 is secured behind the blade 5 and has a small chin 10 that goes into the end of the spring. A similar effect can be obtained by stopping the chin 10 from the blade itself.
Virkningen af dette arrangement er at bladets kredsende bevægelse uhindret kan fortsætte, men rotation 10 af bladet forhindres. Pà grund af fjederens fleksibili-tet kan bladet dreje en lille vinkel, men kan ikke rote-re kontinuerligt. Resultatet er at den kredsende bevægelse overlejres af en lille frem- og tilbagegâende vin-kelbevægelse.The effect of this arrangement is that the circular motion of the blade can proceed unobstructed, but rotation 10 of the blade is prevented. Due to the flexibility of the spring, the blade can rotate at a slight angle, but cannot rotate continuously. The result is that the orbital motion is overlaid by a slight reciprocating angular motion.
15 Der vil nu blive beskrevet forskellige konfigura- tioner af bladet 4, som kan bruges i det ovenfor be-skrevne overfladerensende apparat. De forste tre blade som skal beskrives med henvisning til fig. 2 til 10 er udfort i relativt stift materiale sâsom stâlplade (22 20 gauge steel) eller hârd plast. De med henvisning til fig. Tl til 22 beskrevne er udfort i fleksibelt materiale sâsom fjederstâl. Fig. 23 viser et sammensat blad og fig. 24 og 25 viser et bladsystem omfattende en holder og et ringformet blad.Various configurations of the blade 4 will now be described which can be used in the surface cleaning apparatus described above. The first three leaves to be described with reference to FIG. 2 to 10 are made of relatively rigid material such as 22 gauge steel or hard plastic. Referring to FIG. Tl to 22 described are made of flexible material such as spring steel. FIG. 23 shows a composite blade and FIG. 24 and 25 show a leaf stem comprising a holder and an annular blade.
25 Fig. 2, 3 og 4 viser et tolv-sidet blad 4, for- met med et hovedsageligt konkavt profil som vist i fig.FIG. 2, 3 and 4 show a twelve-sided blade 4, having a substantially concave profile as shown in FIG.
3. En central âbning il bruges til at montere bladet pâ knasten 3 som beskrevet ovenfor. Bladet har typisk en diameter pâ ca. 150 mm. Hver lige æg 12 er adskilt 30 fra naboæggen af en radiait indadrettet spalte 13, typisk 1 mm bred.3. A central aperture il is used to mount the blade to the cam 3 as described above. The blade typically has a diameter of approx. 150 mm. Each straight egg 12 is separated 30 from the adjacent egg by a radially inwardly slotted 13, typically 1 mm wide.
Fig. 4 viser en forstorret detalje af æggen, vist ved cirklen A i fig. 3. Det ses at æggen er sle-bet eller pà anden mâde udformet sâ den har en skærevin-35 kel pâ 15° og har en grat 14 i hele sin længde. Typisk rager graten ca. 0,254 mm ned. Umiddelbart bag graten er 7FIG. 4 shows an enlarged detail of the egg, shown by the circle A in FIG. 3. It is seen that the egg is towed or otherwise shaped so that it has a cutting angle of 15 ° and has a grat 14 throughout its length. Typically, the burr protrudes approx. 0.254 mm down. Immediately behind the grate is 7
DK 156550 BDK 156550 B
der et hovedsagelig ringformet, perifert skær 15, ty-pisk 10 mm bred. Dette skær er vigtigt under brug, idet det udgor en sterre plan flade, som kan presses temmelig hârdt mod væggen uden fare for at edelægge den. Skæret 5 forhindrer, at bladet gâr ind i eller gennemtrænger den overflade, som renses, i kraft af sit overfladeareal, graten vil imidlertid, fordi den er væsentlig mindre end skæret, gennemtrænge overfladen og muliggere fjernelse af den. Dybden af sâdan gennemtrængning begrænses af det 10 hosliggende skær.having a mostly annular, peripheral cut 15, typically 10 mm wide. This cutter is important during use, as it forms a sterile flat surface which can be pressed quite hard against the wall without the danger of destroying it. However, the cut 5 prevents the blade from entering or penetrating the surface being cleaned by virtue of its surface area, however, the burr, because it is substantially smaller than the cut, will penetrate the surface and allow for its removal. The depth of such penetration is limited by the 10 adjacent inserts.
Opdeling af bladet ved hjælp af spalter 13 mu-ligger at de enkelte dele kan arbejde uafhængigt af hin-anden pâ en ujævn overflade.Partitioning of the blade by means of slots 13 may allow the individual parts to work independently of each other on an uneven surface.
Fig. 5, 6 og 7 viser et blad, som ligner det net-15 op beskrevne, men som er cirkulært med en æg 12 med grat rundt langs omkredsen som tidligere beskrevet.FIG. Figures 5, 6 and 7 show a leaf similar to that described in net-15, but which is circular with an egg 12 with a grate around the circumference as previously described.
Dette er et allround-blad, som kan bruges til afrensning af en række forskellige vægbeklædninger sâsom tapet, maling eller ARTEX fra en plan væg- eller loft-20 plade.This is an all-round blade that can be used to clean a variety of wall coverings such as wallpaper, paint or ARTEX from a flat wall or ceiling 20 sheet.
Fig. 8, 9 og 10 viser et andet blad, som ligner det i fig. 2, 3 og 4, men hvor den perifere kant er savtakket. Antallet af savtakker 16 kan variere, men er typisk 64. Som vist har hver cirkelformede savtak 25 16 sin egen grat.FIG. 8, 9 and 10 show another blade similar to that of FIG. 2, 3 and 4, but where the peripheral edge is sawed. The number of saws 16 may vary, but is typically 64. As shown, each circular saw 25 has its own grat.
Dette blad er ferst og fremmest beregnet til pudslignende vægbeklædninger sâsom ARTEX, men er ogsâ nyttig til opkradsning af tapet forud for afrensning, hvis dette har vist sig at være meget svært.This blade is intended primarily for plaster-like wall coverings such as ARTEX, but is also useful for pre-cleaning wallpaper, if this has proved very difficult.
30 De to blade vist i fig. 11 til 13 og 14 til 16 vil blive beskrevet sammen, da de er meget nær ens. Beg-ge blade er tilsigtede at være meget fleksible, og der-for er de udfbrt i fjederstâl eller lignende og er ud-formede med seksten radielle spalter 13, hver 2 mm 35 brede. Den eneste forskel'mellem de to blade er at det fer s te (fig. 11 til 13) er helt cirkulært, med ens det 8The two leaves shown in FIG. 11 to 13 and 14 to 16 will be described together as they are very similar. Both blades are intended to be very flexible and therefore they are made of spring steel or the like and are formed with sixteen radial slots 13, each 2 mm 35 wide. The only difference between the two leaves is that the leaves (figs. 11 to 13) are completely circular, with the same 8
DK 156550 BDK 156550 B
andet (fig. 14 til 16) er udformet med seksten rette æg-ge.second (Figures 14 to 16) is formed with sixteen straight eggs.
Bladenes fleksibilitet er vist i fig. 12/13 og 15/16. I hvert tilfælde viser disse profilen som frem-5 stillet (fig. 12 og 15) og under brug (fig. 13 og 16).The flexibility of the blades is shown in FIG. 12/13 and 15/16. In each case, these profiles show as prepared (Figs. 12 and 15) and in use (Figs. 13 and 16).
Disse blade er typisk 120 mm i diameter. Som for er æg-gene udformet med en 15° skærevinkel og en grat i hele længden. En egenskab ved disse fleksible blade er, at diameteren oges nâr de presses mod vægfladen, vist ved 10 de prik-stiplede linier 28 i fig. 13 og 16. Denne forogelse i diameter muliggor en forstærket skærende virkning nâr bladet bevæges frem mod og tilbage fra væg-gen, sâledes at diameteren stiger og faider.These blades are typically 120 mm in diameter. As before, the eggs are designed with a 15 ° cutting angle and a grate for the entire length. One feature of these flexible blades is that the diameter increases as they are pressed against the wall surface, shown by the dotted dotted lines 28 in FIG. 13 and 16. This increase in diameter allows for an enhanced cutting effect as the blade is moved forward and backward from the wall, causing the diameter to increase and decrease.
Bladet vist i fig. 17 til 19 minder meget om det 15 som blev beskrevet med henvisning til fig. 11 til 13.The blade shown in FIG. 17 to 19 are very similar to the 15 described with reference to FIGS. 11 to 13.
Den væsentligste forskel er en lidt anderledes tvær-snitsfacon (se fig. 18 og 19) og et lidt anderledes arrangement og udformning af æggen, som vist forstorret i fig. 18. I dette tilfælde slutter det perifere skær 15 20 ved den perifere kant i en nedad fremstâende næsedel 30, som gàr hele omkredsen rundt. Den underste (dvs. mod overfladen vendende) flade af næsedelen 30 er skær-pet, sâledes at den har en sideskæv kant 31, som dan-ner en skærende vinkel a med bladets generelle plan.The main difference is a slightly different cross-sectional shape (see Figs. 18 and 19) and a slightly different arrangement and shape of the egg, as shown enlarged in Figs. 18. In this case, the peripheral cutter 15 20 terminates at the peripheral edge of a downwardly projecting nose portion 30, which rotates around the entire circumference. The lower (i.e., facing surface) of the nose portion 30 is sharpened so that it has a laterally beveled edge 31 which forms an intersecting angle α with the general plane of the blade.
25 vinklen a afhænger af den beklædning, der skal afrenses.The angle a depends on the clothing to be cleaned.
Den præcise værdi for vinklen a vil sâledes variere ef-ter omstændighederne, men vinkler mellem 16° og 34° har vist sig at være meget gode til det normale omrâde af vægbeklædning.The exact value of the angle a will thus vary according to the circumstances, but angles between 16 ° and 34 ° have been found to be very good for the normal area of wall covering.
30 Bladet vist i fig. 20 til 22 minder igen om det, som blev beskrevet ovenfor med henvisning til fig. 11 til 13, men med en dobbeltslebet æg vist detaljeret i fig. 22. Denne skærende æg er faktisk dannet af to sleb-ne flader 32 og 33, som danner henholdsvis vinkel X og 35 Y som vist. Vinkel X og Y kan hver især ligge i om-râdet 0° til 60°, men i praksis vil X typisk ligge 9The blade shown in FIG. 20 to 22 are again similar to those described above with reference to FIGS. 11 to 13, but with a double-cut egg shown in detail in FIG. 22. This cutting egg is actually formed by two grinding surfaces 32 and 33 which form angles X and 35 Y, respectively, as shown. Angles X and Y may each be in the range of 0 ° to 60 °, but in practice, X will typically lie 9
DK 156550 BDK 156550 B
mellem 26° og 40° og Y ligge mellem 24° og 40°. Det har vist sig at en forogelse af vinkel X resulterer i storre skærehastighed, men at bladet sâ er mindre godt til kraftige materialer. Det firkantede profil, vist i 5 fig. 21 og i omrids i fig. 22, viser bladet for slib-ning. Det bemærkes at hældningen af det perifere skær 15 er 0° i denne udforelse. I praksis har det vist sig, at hældningen af skæret 15 kan variere mellem 0° og 45°.between 26 ° and 40 ° and Y lie between 24 ° and 40 °. It has been found that an increase of angle X results in greater cutting speed, but that the blade is then less good for heavy materials. The square profile shown in FIG. 21 and in outline of FIG. 22, shows the blade for grinding. It is noted that the slope of the peripheral insert 15 is 0 ° in this embodiment. In practice, it has been found that the inclination of the insert 15 can vary between 0 ° and 45 °.
10 Bladet i fig. 23 er et sammensat blad omfattende et ovre blad 17 lignende fig. 5-bladet, som er beskre-vet ovenfor, og et nedre blad 18 lignende fig.10 The blade of FIG. 23 is a composite blade comprising an upper blade 17 similar to FIG. 5 blade, described above, and a lower blade 18 similar to FIG.
14-bladet beskrevet ovenfor. En afstandsskive adskiller de to.14 blade described above. A spacer separates the two.
15 Bladet vist i fig. 24 til 26 er faktisk et blad- "system", som omfatter selve bladet 4 og en todelt holder til bladet, hvilken holder er fastgjort til kna-sten 3 som ovenfor beskrevet. Fra fremstillingen er bladet 4 ringformet og plant, som vist i fig. 24. Ved 20 at skrue de to halvdele 20 og 21 af holderen sammen ved hjælp af skruer 22, tvinges bladet ind i det koniske profil til skæring.15 The blade shown in FIG. In fact, 24 to 26 is a blade "system" comprising the blade itself 4 and a two-piece blade holder, which holder is attached to the cradle 3 as described above. From the manufacture, the blade 4 is annular and flat, as shown in FIG. 24. By screwing the two halves 20 and 21 of the holder together by means of screws 22, the blade is forced into the conical profile for cutting.
Undersiden af den ovre del 20 af holderen er vist i fig. 26, og det ses at den omfatter en cirkulær, 25 opdelt vulst 23, som ved samling passer ned i en tilsva-rende formet groft 24 i den nedre del 21. Den indre diameter af bladet 4 er sâledes, at den passer ned over den ydre kant af vulsten 23. Radiait udad fra vulsten 23 er undersiden 25 af den ovre del 20 30 konisk, dette svarer til en tilsvarende konisk topflade 26 af den nedre del 21. Nâr de to dele 20 og 21 bliver bragt sammen med bladet 4 ind imellem, vil bladet sâledes blive tvunget ind i en konisk form i kraft af indspændingen mellem de modstâende flader 25 og 35 26, se fig. 25.The underside of the upper portion 20 of the holder is shown in FIG. 26, and it is seen that it comprises a circular, 25 divided bead 23 which, when assembled, fits into a correspondingly shaped coarse 24 in the lower portion 21. The inner diameter of the blade 4 is such that it fits over it. outer edge of the bead 23. Radiait outwardly of the bead 23, the underside 25 of the upper portion 20 is tapered, which corresponds to a corresponding tapered top surface 26 of the lower portion 21. When the two portions 20 and 21 are brought in with the blade 4 in between, the blade will thus be forced into a conical shape by virtue of the clamping between the opposing faces 25 and 35, see FIG. 25th
Den ydre diameter af bladet 4 er sâledes, at nâr delene 20 og 21 er samlet helt tæt, stâr bladetsThe outer diameter of the blade 4 is such that when the parts 20 and 21 are assembled completely tight, the
Claims (17)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB858529158A GB8529158D0 (en) | 1985-11-27 | 1985-11-27 | Wall covering stripper |
| GB8529158 | 1985-11-27 | ||
| GB8600720 | 1986-11-26 | ||
| PCT/GB1986/000720 WO1987003253A1 (en) | 1985-11-27 | 1986-11-26 | Surface stripper |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK387887D0 DK387887D0 (en) | 1987-07-24 |
| DK387887A DK387887A (en) | 1987-07-24 |
| DK156550B true DK156550B (en) | 1989-09-11 |
Family
ID=26290046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK387887A DK156550B (en) | 1985-11-27 | 1987-07-24 | Surface cleaning apparatus and blade therefor |
Country Status (2)
| Country | Link |
|---|---|
| DK (1) | DK156550B (en) |
| NO (1) | NO873119L (en) |
-
1987
- 1987-07-24 DK DK387887A patent/DK156550B/en not_active Application Discontinuation
- 1987-07-24 NO NO873119A patent/NO873119L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK387887D0 (en) | 1987-07-24 |
| NO873119D0 (en) | 1987-07-24 |
| NO873119L (en) | 1987-07-24 |
| DK387887A (en) | 1987-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5664332A (en) | Hand knife with cover | |
| FI80573C (en) | RINGLIKNANDE BETT OCH BETTHUS. | |
| US4170063A (en) | Knife with removable blade housing | |
| EP0122635B1 (en) | Rotary hand knife and parts therefor | |
| US5692307A (en) | Rotary knife blade | |
| US4492027A (en) | Rotary hand knife | |
| DE59504791D1 (en) | Form-locked insert | |
| CA2225120A1 (en) | Rotary cutter | |
| US6955110B1 (en) | Apparatus and method for cutting soft materials, especially meat | |
| EP0713752B1 (en) | Electric razor | |
| JPH08336808A (en) | Chip cutting head including end face cutting knife | |
| JPS63501701A (en) | Surface stripping device | |
| EP1418028B1 (en) | Tool for rotary knives | |
| JPH10155814A (en) | Bone raspatory | |
| DK156550B (en) | Surface cleaning apparatus and blade therefor | |
| EP4124228A1 (en) | Head for brush cutters | |
| KR100587211B1 (en) | Spinal cord removal tool with adjustable blades | |
| EP0492746B1 (en) | Hedge trimmer | |
| GB2045046A (en) | Lawn edger | |
| US2202548A (en) | Rotary cutter | |
| JP3002953U (en) | Mowing blade for preventing weeding of a mower | |
| GB2207076A (en) | Electric razors | |
| CA1313501C (en) | Method and apparatus for removing excess hoof growth | |
| ATE19987T1 (en) | SLICING MACHINE WITH A GRINDING TOOL FOR THE ROTARY ROTARY KNIFE. | |
| RU1255U1 (en) | Tool for sharpening a movable knife household grinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PHB | Application deemed withdrawn due to non-payment or other reasons |