SE190833C1

SE190833C1 -

Info

Publication number: SE190833C1
Authority: SE
Publication date: 1964-01-01

Description

Uppfinnare: C Pernetta Prioritet begard frail. den februari 1959 och den 13 januari 1960 (Storbrttannien) Uppfinningen avser en fjaderanordning med fjaderblad, vilka i ospant tillstand aro krokta. Dylika fjadrar med konstant eller variabel, ieke ackumulativ fjaderkraft aro .kanda. Inventor: C Pernetta Priority begard frail. February 1959 and January 13, 1960 (Great Britain) The invention relates to a spring device with spring leaves, which in a relaxed state are crooked. Such springs with constant or variable, ieke accumulative spring force aro .kanda.

Fjaderanordningen enligt uppfinningen iiinefattar en atminstone pa en del av sin omkrets konvex trumma, en tapp eller rule oeh en i ospant tillstand krOkt, remsformad fjader, som vid sin ena dude ar pd sadant satt fast pa trumman, att den strayar att fjadra utat fran trumman, varvid fjadern med sin i ospant tillstand radiellt inre sida anligger mot tappen eller rullen och ar anordnad att spannas genom sadan relativrorelse mellan trumman och rullen, att fjadern drages over rullen och en del av fjadern bojes over trummans krokta del och darvid erhaller en krokning, som ar motsatt mot fjaderns krokning i ospant tillstand. The spring device according to the invention comprises a convex drum, at least on a part of its circumference, a pin or a rule, a curved, strip-shaped spring, which in one dude is so attached to the drum that it springs to spring out of the drum. , wherein the spring with its radially inner side abuts against the pin or roller and is arranged to be tensioned by such a relative movement between the drum and the roller, that the spring is pulled over the roller and a part of the spring is bent over the curved part of the drum and thereby obtains a hook, which is opposite to the hook of the spring in the unstretched state.

Fjaderanordningen kamietecknas huvudsakligen darav, att fjadern bestar av skiktade fjaderhlad, vilka vartdera aro krokta i ospant tillstand, att tappen eller rullen anligger mot fjadern endast utmed en linje eller en smal yta och att fjadern stracker sig i huyudsak hogst ett vary kring tappen eller rullen. The spring device is mainly characterized by the fact that the spring consists of layered spring blades, each of which is crooked in the unspaned state, that the pin or roller abuts the spring only along a line or a narrow surface and that the spring extends substantially at most around the pin or roller.

Ytterligare egenskaper hos uppfinningen framga av bifogade patentansprak och nedanstaende beskrivning under hanvisning till bifogade ritningar, vilka visa nagra utforingsformer av fjaderanordningen. och nagra tilllampningsmojligheter for desanuna. Fig. 1 visar en. sidovy av en bladfjader, fig. la en tvarsektion efter linjen la—la i fig. 1 och fig. 2 en sidovy ay en annan bladfjader. Fig. 3 och 4 visa sidovyer ay en fjaderanordning tva olika lagen, fig. 5-10 sidovyer ay ytterligame utfOringsformer, fig. 11-20 olika tilllampningar av fjaderanordningen enligt upp finningen vid en gaspedal for motorfordon, en kuggstangsanordning, en kabel imed kabeltrumma, ett skjutfOnster, en kommutatorborste, en motorhuv for bilar, ett instaltbart ryggstod resp. en hallare for exempelvis ett borrhuvud. Fig. 21 yisar en. annan utforingsform av ett fjaderblad, fig. 22 ytterligare en utforingsform av fjaderanordningen, fig. 23 en tillampning av fjaderanordningen yid ett skankelmatt samt fig. 21 en tillampning ay fjaderanordningen vid ett visarinstrument. Further features of the invention will become apparent from the appended patent claims and the following description with reference to the accompanying drawings, which show some embodiments of the spring device. and some application possibilities for desanuna. Fig. 1 shows a. side view of a leaf spring, Fig. 1a a cross-section along the line 1a-1a in Fig. 1 and Fig. 2 a side view of another leaf spring. Figs. 3 and 4 show side views of a spring device two different layers, Figs. 5-10 side views of further embodiments, Figs. 11-20 show different applications of the spring device according to the invention with an accelerator pedal for motor vehicles, a rack device, a cable with a cable drum, a sliding window, a commutator brush, a hood for cars, an adjustable backrest resp. a holder for, for example, a drill head. Fig. 21 yisar en. another embodiment of a spring blade, Fig. 22 a further embodiment of the spring device, Fig. 23 an application of the spring device yid a shank mat and Fig. 21 an application ay the spring device to a pointing instrument.

Vid varje utf8ringsform astadkommer fj aderavordningen en kring en axel verkande kraft och saledes ett vridmoment, varvid vridningsvinkeln ar mindre an ett helt vary. Varje fjader utgores ay en skiktad fjader, sammansatt ay fjaderblad, vilka exempelvis kunna ha den i fig. 1, 2 eller 21 visade formen. Varje qader strficker sig mindre an ett vary kring den andra kroppen men kan. exempelvis enligt fig. 5 ha ett eller flera fria vary. In each embodiment, the spring bevel provides a force acting about an axis and thus a torque, the angle of rotation being less than a whole vary. Each spring is formed into a layered spring, composed of spring leaves, which may, for example, have the shape shown in Figs. 1, 2 or 21. Each quadriceps strricker less than a vary around the other body but can. for example according to Fig. 5 have one or more free vary.

Det i fig. 1 och la visade fjaderbladet ham i ospant tillstand cirkular form, dvs. konstant krokningsradie, och astadkommer saledes en konstant fjaderkraft. The spring leaf shown in Fig. 1 and la in circular form, i.e. constant hooking radius, and thus provides a constant spring force.

Det i fig. 2 visade fjaderbladet fir spiralformigt i .ospant tillstand och har salunda en varierande krokningsradie. The spring blade shown in Fig. 2 is helically in the tensioned state and thus has a varying radius of curvature.

Den i fig. 3 och 4 visade fjaderanordningen enligt uppfinningen innefattar en cylindrisk kropp 30, som am vridhar kring en axel 31 och medelst en slam/. 33 fast forbunden med en skiktad fjader 32, sum bestar ay tre fjaderblad ay den i fig. 1 visade typen. En kring en axel 35 vridbar rulle 34 med relativt liten diameter anligger mot den sida av fjadern 32, som ligger ytterst kring kroppen 30. Rullen 34 utgor den oyannamnda andra kroppen och ham mindre diameter an den avspanda fj& dern. Rullen anligger mot fjfidern yid ett stal- Dupl. kl. 2165; 49 a: 41/02; 63 c: 19/01 2— — le, vars avstand fran kroppen 30 Sr mindre fjaderns radie i ospant tillstand. Denna placering av rullen anvdndes i de fiesta av de nedan beskrivna utforingsformerna. The spring device according to the invention shown in Figs. 3 and 4 comprises a cylindrical body 30 which rotates about an axis 31 and by means of a mud /. 33 fixedly connected to a layered spring 32, the sum of which consists of three spring leaves of the type shown in Fig. 1. A roller 34 of relatively small diameter rotatable about an axis 35 abuts against the side of the spring 32 which lies at the outermost part of the body 30. The roller 34 constitutes the above-mentioned second body and has a smaller diameter than the relaxed spring. The roller rests against the spring yid a steel- Dupl. at 2165; 49 a: 41/02; 63 c: 19/01 2— - le, whose distance from the body 30 Sr smaller the radius of the spring in the unstressed state. This placement of the roller was used in most of the embodiments described below.

Fiddern 32 är bojd over kroppen 30 i motsatt riktning mot sin naturliga krokning och stravar darfor att rulla ihop sig till det i fig. 4 visade ldget och att db.rvid vrida kroppen 30 fran Eget enligt fig. 3 till laget enligt fig. 4. Fig. 5 visar en liknande fjaderanordning, dSr fjddern 40 Sr sammansatt av spiralfor- miga fjaderblad av den i fig. 2 visade typen. Fjadern utovar ett varierande vridmoment pa den cylindriska kroppen 41 och har progressiv fjaderverkan. Fjadern enligt fig. 2 kan eventuellt lindas om, sa att den hire dnden tes vid kroppen 41, varigenom den blir dearessivt verkande. The feeder 32 is bent over the body 30 in the opposite direction to its natural hook and strains to roll up to the edge shown in Fig. 4 and thereby to turn the body 30 from Eget according to Fig. 3 to the layer according to Fig. 4. Fig. 5 shows a similar spring device, in which the spring 40 Sr is composed of helical spring leaves of the type shown in Fig. 2. The spring exerts a varying torque on the cylindrical body 41 and has progressive spring action. The spring according to Fig. 2 can optionally be rewound, so that the hire end is tethered to the body 41, whereby it becomes deaerating.

Fig. g visar en modifikation av den i fig. 3 och 4 visade fjd.deranordningen, varvid den cylindriska kroppen 30 ersatts med en kropp 60 med 'ojimn krokt omkrets. Fjadern 61 Sr sanrmansatt av fjaderblad av den i fig. 1 vi- sade typen. PS grund av kroppens 60 ojamna omkrets utovar fjadern under sin avspanningsr5relse ett varierande vridmoment kroppen 60. Fig. G shows a modification of the spring device shown in Figs. 3 and 4, in which the cylindrical body 30 is replaced by a body 60 with an evenly curved circumference. The spring 61 is composed of spring leaves of the type shown in Fig. 1. Due to the uneven circumference of the body 60, the spring exerts a varying torque during the relaxation movement of the body 60.

Fig. 7 visar en fjaderanordning, vid vilken en fast halvcylindrisk kropp 70 Sr fast for- bunden med fjadern 71. En vid krappea 70 svangbart lagrad havstang 72 har en tapp 74 fOr en rulle 73. Fjadern 71 Sr sammansatt av fjaderblad av den i fig. 1 visade typen och strdvar att med konstant kraft svanga haystangen 72 kring dess svangningsaxel vid krappen 70. Fig. 7 shows a spring device, in which a fixed semi-cylindrical body 70 is fixedly connected to the spring 71. A sea rod 72 pivotably mounted at the crank 70 has a pin 74 for a roller 73. The spring 71 is composed of spring leaves of the type shown in fig. 1 shows the type and strength of pivoting the haystack 72 about its pivot axis at the force 70 at a constant force.

Enligt den i fig. 8 och 9 visade utforingsformen Sr en halvcylindrisk kropp 80 sviing- bar kring en tapp 81, som Sr excentrisk i for- hallande till cylinderns .geometriska axel. En av fjaderblad enligt fig. 1 sammansatt fjader 82 utOvar p5. grund av tappens 81 excentriska lage ett varierande vridmoment pa kroppen 80 och stravar att svanga denim fran laget enligt fig. 9 till Idget enligt fig. 8. According to the embodiment shown in Figs. 8 and 9, Sr a semi-cylindrical body 80 is pivotable about a pin 81, which Sr is eccentric in relation to the geometric axis of the cylinder. A spring 82 composed of spring leaves according to Fig. 1 extends above p5. due to the eccentric position of the pin 81 a varying torque on the body 80 and strains to swing denim from the layer according to Fig. 9 to Idget according to Fig. 8.

Fig. 10 visar en centreringsanordning med en kring en axel 91 vridbar cylinder eller trumma 90, pa vilken en fjader 92 Sr fAst medelst en skTuv 93. Fjadern Sr sammansatt av fjaderblad, vilka i ospant tillstand aro krokta vid vardera linden. Varje krokt del 94 av fjadern bestar av fjaderblad ay den i fig. 1 viRade typen. Tva pa tappar 97 lagrade rul- lar 96 anligga mot fjaderns konkava sida. Om kroppen 90 vrides at ettdera hallet, motverkas rorelsen av ett exempelvis konstant vridmo- ment. I kroppens mittlage utsattes den lake for nagot vridmoment. Vid vridning av kroppen fran mittldget spannes den ena delen av fjadern 92, medan den andra delen forblir ospand och avlagsnar sig fran tillhorande riffle '97. En dylik fjaderanordning kan an.vandas exempelvis vid registreringsmekanismer, gransIdgesomkopplare och rakneverk. Fig. 10 shows a centering device with a cylinder or drum 90 rotatable about an axis 91, on which a spring 92 is fastened by means of a slider 93. The spring is composed of spring leaves, which in the unstretched state are crooked at each winding. Each hook part 94 of the spring consists of spring leaves of the type shown in Fig. 1. Two on pin 97 stored rollers 96 abut against the concave side of the spring. If the body 90 is rotated at either hall, the movement is counteracted by, for example, a constant torque. In the middle layer of the body, the lake was exposed to some torque. When the body is rotated from the center, one part of the spring 92 is tensioned, while the other part remains unstretched and detaches from the associated rifle '97. Such a spring device can be used, for example, in registration mechanisms, branch switches and razors.

Enligt den i fig. 22 visade fjaderanordningen Sr avstandet ■mellan rullen 235 och kroppen 230 sa stort, att ingen del av den rullen 235 omgivande fjaderanden behover dndra krodmingsriktning. Endast den relativt raka delen av fjddern bojes Over krappen 230, nar fjadern spannes. Ddrigenom vinnes, att vid en given utmattningsbestandighet hos fjadern saval kroppen 230 som den fria fjaderanden kan utforas med mindre diameter. Alternativt kan fjadern utforas for storre utmattningsbestandighet. I den del av fjadern, som loper Over rullen 235 for att intaga ett strackt ld.ge melIan delarna 235 och 230, Rat- spanningen fran noll till ett maximalt varde, som salunda Sr lika med hela spanningsomradet. Fjaderns andra del, som fran ett straat lage over* till det krokta Idget kring kroppen 230, utsattes for en hogre maximal spanning. Da den emellertid avIdnkas mindre starkt an den forstnamnda delen av fjadern, har den ett mindre stort spanningsomrade. Den ena delen av fjfidern har salunda en lag maximal arbetsspanning med ett stort spanningsonnade, medan den andra delen har en hog maximal arbetsspanning med ett lagt spanningsomrade. Fjaderanordningen kan vara utford pa sa.- dant salt, att de hada delarna av fjadern ha ungefar samma utmattningsbestandighet. Fjadern kan ha tvh. krokta partier med olika krokningsradier, varvid den mindre starkt krokta delens fria ande fdstes pakroppen 230. According to the spring device Sr shown in Fig. 22, the distance ■ between the roller 235 and the body 230 is so large that no part of the spring edge surrounding the roller 235 needs to change direction. Only the relatively straight part of the spring is bent over the cradle 230 when the spring is tensioned. Thereby it is gained that at a given fatigue resistance of the spring both the body 230 and the free spring edge can be made with a smaller diameter. Alternatively, the spring can be made for greater fatigue resistance. In the part of the spring which runs over the roller 235 to assume a stretched length between the parts 235 and 230, the steering voltage from zero to a maximum value, which is thus equal to the whole voltage range. The second part of the spring, which from a street lay over * to the crooked Idget around the body 230, was subjected to a higher maximum tension. However, since it is less strongly inclined than the first-mentioned part of the spring, it has a smaller voltage range. Thus, one part of the spring has a low maximum operating voltage with a large voltage source, while the other part has a high maximum operating voltage with a set voltage range. The spring device can be challenged on such a salt that the parts of the spring have approximately the same fatigue resistance. The spring can have tvh. crooked portions with different radiating curvature, the free spirit of the less strongly crooked part being attached to the packing body 230.

Fig. 11 visar tillampningen av en fjaderanordning enligt fig. 3 och 4 'vid en gaspedal 100 4 en Ml. Fjaderkraften kan harvid vara sa stor, att den helt upphaver fotens tyngd, sa att foten kan vila ph pedalen 100 utan att suedtrycka densamma. Fjadern utOvar ett konstant moment pa pedalen, varfor foten maste utova en konstant kraft under nedtryckning av pedalen. En andra fjader av skruvtyp kan vara anordnad for att astadkomma ett varierande mottryck, nar pedalen nedtryckes. I stallet kan en fjdderanordning med pragressiv fjSderverkan av tidigare beskriven typ anvandas. I vissa fall kan det vara lampligare att anvanda den i fig. 22 beskrivna fjaderanordningen. Fig. 11 shows the application of a spring device according to Figs. 3 and 4 'to an accelerator pedal 100 4 a M1. The spring force can then be so great that it completely cancels the weight of the foot, so that the foot can rest the pedal 100 without depressing it. The spring exerts a constant torque on the pedal, which is why the foot must exert a constant force while depressing the pedal. A second screw-type spring may be provided to provide a varying back pressure when the pedal is depressed. Instead, a spring device with a progressive spring action of the type previously described can be used. In some cases it may be more convenient to use the spring device described in Fig. 22.

I fig. 12 visas en kuggstang 110 och ett darmed samverkande kuggdrev 111, som motsvarar kroppen 30 i fig. 3 och 4. Den av fjaderblad enligt fig. 1 sammansatta fjadern 112 Sr till en del Mijd Over drevets tondo:de del och utOvar ett konstant moment pa drevet. Fj Aderanordningen kan ersattas med den i fig. 22 visade anordningen. Fig. 12 shows a rack 110 and a co-operating gear 111 corresponding thereto, which correspond to the body 30 in Figs. 3 and 4. The spring 112 Sr composed of spring blades according to Fig. 1 is partly Mijd Over the second part of the gear and above a constant torque on the drive. The spring device can be replaced with the device shown in Fig. 22.

Fig. 13 visar tillampningen av den i fig. 3 och 4 visade fjaderanordningen vid en kabel 120 och en kabeltrumma 121. Trumman motsvarar kroppen 30, och fjadern 122 är sammansatt av fjiderblad enligt fig. 1 och utovar ett konstant moment pa trumman och salunda en konstant dragkraft pa kabeln. Trumman kan vara utford med periferiella spar, sa. att kabeln kan ligga innanfor fjadern. Aven — —3 har kan den i fig. 22 visade fjaderanordningen anyandas. Fig. 13 shows the application of the spring device shown in Figs. 3 and 4 to a cable 120 and a cable drum 121. The drum corresponds to the body 30, and the spring 122 is composed of spring leaves according to Fig. 1 and exerts a constant moment on the drum and thus a constant traction on the cable. The drum can be challenging with peripheral spurs, he said. that the cable can be inside the spring. The spring device shown in Fig. 22 may also be different.

Fig. 14 visar tillampuingen av fjaderanordningen enligt fig. 3 och 4 vid ett skjutfonster. FOnsterramen är rorlig mellan skenor 131 och Sr vid 132 ledbart forbunden med en. slitsfOrsedd arm 133. Armen är utford i ett stycke med en halvcylindrisk del 134, som Sr vridbar kring sin geometriska axel 135 me-deist ett handtag 136, som kan vara utfort i ett stycke med delen 184 eller forbundet med derma via en utvaxlingsanordning. Delen 134 är medelst en skruv 138 forbunden med en fjader 137, som anligger mat en kring en tapp 140 vridbar rulle 139. Fjadern Sr sammansatt av fjaderblad enligt fig. 1 eller Bretradesvis av fjaderblad av den i fig. 21 visade formen och utovar ph delen 134 ett moment, som i huvudsak upphaver det av f8nstrets tyngd astadkomna ,momentet. En koppling eller broms kan vara anordnad for att forhindra, att fOnstret forskjutes, exempelvis i oppningsriktningen, ph annat satt an medelst handtaget. Fjaderanordningen kan ersattas med den i fig. 7 eller fig. 22 visade. Fig. 14 shows the application of the spring device according to Figs. 3 and 4 to a sliding window. The window frame is movable between rails 131 and Sr at 132 articulated to one. slit arm 133. The arm is a one-piece challenge with a semi-cylindrical part 134, which is rotatable about its geometric axis 135 by means of a handle 136, which can be formed in one piece with the part 184 or connected thereto via a gear device. The part 134 is connected by means of a screw 138 to a spring 137, which abuts a roller 139 rotatable about a pin 140. The spring Sr is composed of spring leaves according to Fig. 1 or Bredradesvis of spring leaves of the shape shown in Fig. 21 and exits the ph part 134 a moment, which essentially cancels out the moment achieved by the weight of the window. A clutch or brake may be provided to prevent the window from being displaced, for example in the opening direction, or otherwise by means of the handle. The spring device can be replaced with the one shown in Fig. 7 or Fig. 22.

Fig. 15 visar tillimpningen av fjaderanordningen enligt fig. 3 och 4 vid en kommutatarborste 150 till en elektrisk motor. Det erforderliga trycket 8verf8res frhn fjadern 151, som Sr sammansatt av fjaderblad enligt fig. 1, medelst en havarm 152, som Sr utfOrd i ett stycke Hied en halveylindrisk skiva 153 oeh svangbar kring en tapp 154. Fjaderanordningen kan vara utfOrd ph det i fig. 22 visade sattet. Fig. 15 shows the application of the spring device according to Figs. 3 and 4 to a commutator brush 150 to an electric motor. The required pressure 8 is transferred from the spring 151, which is composed of spring leaves according to Fig. 1, by means of a sea arm 152, which is formed in one piece, has a semi-cylindrical disc 153 and is pivotable about a pin 154. The spring device can be made of the one shown in fig. 22 showed the set.

Fig. 16 och 17 visa en fjaderanordning enligt fig. 8 och 9 vid tillampning ph en for en bil avsedd motorhuv 160, som uppbares av en med en skiva 162 fOrbunden arm 161, som Sr svangbar kring en tapp 163. En av fjaderblad enligt fig. 1 sarnmansatt fjader 164 Sr medelst en skruv 165 forbunden med skivan 162 och anligger mot en rulle 166. I det i fig. 16 visade Eget phverkas huven 160 av det storsta vridmomentet. Det i laget enligt fig. 17 verksamma minsta vridmomentet Sr tillrackligt stort for att hSlla huven i Oppet lage. Figs. 16 and 17 show a spring device according to Figs. 8 and 9 when applied to a bonnet 160 intended for a car, which is supported by an arm 161 connected to a disc 162, which is pivotable about a pin 163. One of the spring blades according to Figs. A composite spring 164 is connected by means of a screw 165 to the disc 162 and abuts against a roller 166. In the self-actuating hood shown in Fig. 16, the hood 160 is actuated by the greatest torque. The minimum torque S in the team according to Fig. 17 is sufficiently large to hold the hood in the Oppet position.

Enligt fig. 18 anvandes en fjaderanordning av den nyss beskrivna typen i samband med ett fallbart ryggstod 180. RyggstOdet kan lasas i olika lagen medelst en icke visad sparr. Nar sparren lossas, svanges ryggstodet av fjadern uppat till sitt Ovre andla:ge. I de hada sista utforingsexemplen kan fjaderanordningen ersattas med den i fig. 22 visade. According to Fig. 18, a spring device of the type just described is used in connection with a collapsible backrest 180. The backrest can be locked in different layers by means of a ratchet (not shown). When the asparagus is loosened, the backrest is swung by the spring upwards to its upper part: give. In the last exemplary embodiments, the spring device can be replaced by the one shown in Fig. 22.

I fig. 19 och 20 anvandes en fjaderanordning enligt fig. 12 i samband med en hallare for ett borrhuvud eller dylikt. En vertikal stang eller pelare 190 Sr utformad med kuggar 194 for samverkan med ett kuggdrev 192. Fjadern193 Sr medelst en skruv 194 fOrbunden med drevet vid ett icke tandat static pa omkretsen. Fjadern anligger ph tidigare beskrivet satt mot en rulle 195. Den Sr samman salt av fjaderblad enligt fig. 1 ach astadkommer ett konstant vridmoment ph drevet for att balansera borrhuvudet. Drevet kan vridas medelst en handvev 196. Aven har kan fjaderanordningen ersattas med den i fig. 22 visade. In Figs. 19 and 20, a spring device according to Fig. 12 is used in connection with a holder for a drill head or the like. A vertical rod or pillar 190 is formed with teeth 194 for co-operation with a gear 192. The spring 193 is connected by means of a screw 194 to the gear at a non-toothed static on the circumference. The spring abuts ph previously described set against a roller 195. It Sr together salt of spring leaves according to Fig. 1 ach achieves a constant torque ph the gear to balance the drill head. The gear can be rotated by means of a hand crank 196. The spring device can also be replaced by the one shown in Fig. 22.

Om i en fjaderanordning enligt fig. 3 och 4 fjaderblad av den i fig. 21 visade formen anvandas i stallet for fjaderblad eirligt fig. 1, erhMles en sinusformig fjaderkraftkurva. If in a spring device according to Figs. 3 and 4 spring leaves of the shape shown in Fig. 21 are used in the stable for spring leaves in accordance with Fig. 1, a sinusoidal spring force curve is obtained.

Fig. 23 visar tillampningen av en fjaderanordning enligt fig. 3 och 4 vid ett skankelmat eller en klamanordning. Fjaderanordningen. kan harvid vara av den i fig. 22 visade typen. Fig. 23 shows the application of a spring device according to Figs. 3 and 4 to a shank food or a clamping device. The spring device. may then be of the type shown in Fig. 22.

Enligt fig. 24 anvandes en fjaderanordning enligt uppfinningen -vid ett kansligt visarinstrument, som icke Sr utsatt for stotar. Rorelsen hos den med en krokt yta utformade delen 241, som Sr svangbar kring en axel 242, overfOres av fjadern till den vridbara rullen 244, som uppbar visaren 240. Aven liar kan fjaderanordningen vara utford ph det i fig. 22 visade sattet. According to Fig. 24, a spring device according to the invention is used in a probable pointer instrument which is not exposed to bumps. The movement of the curved part 241, which is pivotable about an axis 242, is transmitted by the spring to the rotatable roller 244, which carried the pointer 240. The spring device can also be challenged in the manner shown in Fig. 22.

Uppfinningen ar icke begransad till de visade och beskrivna utforingsformerna av fjaderanordningen och de exemplifierade anvandningsomradena. Exempel ph andra anvandningsmojligheter Ore handspakar, reglageknappar, nummerskivor for telefonapparater, skrivmaskinstangenter, dorrstangare, lammar, matartrattar och nedtill hangda ngnsInekor. Om den andra kroppen eller rullen Sr svangbar kring den med fjadern fast forbundna kroppen, kan den andra kroppen vara rOrlig utmed en godtycklig lamplig bana. Om den andra kroppen ,darvid Sr rorlig utmed en cirkular bana, behover banans centrum icke sammanfalla med den forsta kroppens vridningscentrum. Forutom den i fig. 23 visade anyandningsm8jligheten, dar hada kropparna aro rorliga, kan fjaderanordningen anvandas exempelvis i knahavtyg. Den andra kroppen behover icke nodvandigtvis rvara en rulle 'utan kan utgoras av en tapp eller dylikt. Olika fjaderblad i den skiktade fjadern kunna ha sinsemellan olika fjaderkonstanter. Fjadrar med varierande fjaderkonstant kunna laggas Over krappar med varierande krokningsradie. The invention is not limited to the embodiments shown and described of the spring device and the exemplary areas of use. Examples of other possible uses Ore hand levers, control buttons, number pads for telephones, typewriter keys, doorknobs, lambs, feeding funnels and hung neknsInekor at the bottom. If the other body or roller is pivotable about the body fixedly connected to the spring, the other body may be movable along an arbitrary lamp path. If the second body, thereby moving along a circular path, the center of the path need not coincide with the center of rotation of the first body. In addition to the possibility of breathability shown in Fig. 23, where the bodies are movable, the spring device can be used, for example, in knuckle fabric. The other body does not necessarily have to be a roller but can be a pin or the like. Different spring leaves in the layered spring may have different spring constants. Springs with varying spring constant can be laid over crabs with varying hooking radius.

En enda kropp med en krokt yta kan vara forbunden med tva eller .flera skiktade fjadrar, vilka stoda mot var sin andra kropp eller rulle. A single body with a curved surface can be connected to two or more layered springs, which each stand against a different body or roller.

Claims

Patent claim:

A spring device comprising at least a part of its circumferential convex drum, a. pin or roller and a crocheted, strip-shaped spring, which in its unspaned state Sr ph so attached to the drum, that it strains to spring out of the drum, whereby the spring, with its in aspant state 4- - radially inner side abuts against the pin or roller and is arranged to be tensioned by such relative movement between the drum. and the roller, that the spring is pulled over the roller and a part of the spring is bent over the curved part of the drum and thereby obtains one. crane, which is opposite to the hook of the spring in the unspaned state, can be drawn daray, that the spring (32, 40, 61, 71, 82, 94, 112, 122, 137, 151, 164, 193) consists of layered spring leaves, which each aro crooked in the unspaned state, that the pin or rattle (34, 73, 96, 139, 166, 195, 235, 244) abuts against the spring only along a line or a narrow surface and that the spring extends substantially at least a variation around the pin or roller.

Spring device according to claim 1, characterized in that the spring leaves have a constant radius of curvature in the spoiled state.

Spring device according to claim 1 or 2, characterized in that the spring leaves or some of them have different radii of curvature in the spirit state.

A spring device according to any one of the following patent claims, cheek-drawn dam, that a part of the spring is arranged that when tensioning the spring while changing its direction of cracking, frail is moved straight around the pin or roller to a bearing around the drum (30, 41, 60, 70, 80, 90, 111, 121, 134, 153, 162, 192 230, 241).

5. A floating device according to any one of patent claims 1-3, characterized in that the drum and the pin or the roller are coated on such a large distance from each other that the existing part of the spring between them has a relatively long length, and that the relative movement there so limited, that at tension ay the spring. only the latter part of it is bent over the drum, so that yid tension and ay tension of the spring no part ay the same completely different direction of hooking (fig. 22).

Spring device according to claim 5, characterized in that the part of the spring which is bent over the drum during tension of the spring, has a different hook in the unspun state than the part which surrounds the pin or miles when the spring is relaxed.

7. A spring device according to any one of the patent claims 1-1, characterized in that each spring leaf is in one spirit connected to the drum, while the other spirit is free. Request Publications: U.S. Patent Nos. 2,833,53 4.