DK171516B1

DK171516B1 - Method of manufacturing length adjustable rod coupling

Info

Publication number: DK171516B1
Application number: DK586487A
Authority: DK
Inventors: Helmut Gerhard
Original assignee: Siegenia Frank Kg
Priority date: 1986-11-27
Filing date: 1987-11-10
Publication date: 1996-12-16
Also published as: DE3762253D1; FI87683B; NO174937B; DK586487A; NO174937C; NO874880L; DK586487D0; FI874832A; NO874880D0; EP0268750A1; DE3640500A1; ES2014014B3; FI874832A0; ATE51929T1; EP0268750B1; FI87683C

Abstract

1. A longitudinally adjustable coupling for rods or bars or the like, more particularly for positioning bar fittings for doors or windows or the like, a U section coupling shoe (3) being provided at the end of one (2) of two rods or bars or the like (2, 6) required to be coupled together, the shoe (3) being in the form of a flexible stamping and having on the inside of at least one arm (4) fine toothing (5) contrived during manufacture, while the other rod or bar or the like (6) has at least on the narrow side intended for coupling complementary fine toothing (7) which extends over a considerable length and which enables the rod or bar or the like (6) to be engaged between the arms (4) of the shoe (3), the fine toothing (5) of the shoe (3), which is unitary with the rod or bar or the like (2), being formed by die stamping, characterised in that the rod cross-section decreases (9) in thickness (10) near the shoe (3) and is correspondingly increased (18) in width (13), the profile (15, 16) of the fine toothing (5) extends transversely over the whole width (14) of the reduced-thickness part (11) of the rod or bar or the like, and the side panels (18) of the reduced-thickness part (11) of the rod or bar or the like, such panels extending beyond the width (13) of the normal cross-section of the rod or bar or the like, are raised at least substantially by 90 degrees relatively to the plane of the rod or bar or the like.

Description

« i DK 171516 B1«In DK 171516 B1

Opfindelsen angår en fremgangsmåde til fremstilling af en længdeindstillelig stangkobling til stænger med væsentlig større bredde end tykkelse, især til betjeningsstangbeslag til vinduer, døre eller lignende, ved hvilket der 5 på enden af den ene af to stænger, der skal sammenkobles, er anbragt en i tværsnit U-formet koblingssko, og at der på indersiden af i det mindste et af det U-formede tværsnits ben er udformet en fortanding, medens den anden stang i det mindste på den til koblingsforbindelsen bestemte kantside 10 over et større længdeafsnit har en komplementær fortanding og kan indsættes mellem koblingsskoens ben i et valgt længdemæssigt forhold til koblingsskoen.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method of producing a length adjustable rod coupling for bars of substantially greater width than thickness, in particular for control rod fittings for windows, doors or the like, in which one is provided at the end of one of two bars to be coupled. cross-section U-shaped coupling shoe and that on the inside of at least one of the legs of the U-shaped cross-section a tooth is formed, while at least on the edge side 10 for the coupling connection, over a larger length section, there is a complementary tooth and may be inserted between the legs of the clutch shoe in a selected longitudinal relationship with the clutch shoe.

En længdeindstillelig stangkobling af denne art til vinduer, døre eller lignende kendes allerede fra beskrivelsen 15 til tysk patent nr. 26 35 446. Denne stangkobling har i praksis vist sig at være særligt velegnet på grund af sin store formstabilitet.A length-adjustable rod coupling of this kind for windows, doors or the like is already known from the description 15 of German Patent No. 26 35 446. In practice, this rod coupling has proved particularly suitable because of its great shape stability.

Ved denne kendte stangkobling skal den med koblingsskoen forsynede stang fremstilles ved en prægepressepro-20 ces ud fra et metalpladeemne, der i det afsnit, der udformes til den U-formede koblingssko, ved hver længdeside har et sidestykke, der rager ud over stangens normale bredde, og hvis bredde tilnærmelsesvis svarer til højden af U-benet af den deraf dannede koblingssko. Udgangsemnet til fremstil-25 lingen af den med koblingsskoen forsynede stang skal derfor have en tilsvarende større bredde end den færdige stang.In this known rod coupling, the rod provided with the coupling shoe shall be manufactured by an embossing press process from a metal plate blank which in the section formed to the U-shaped coupling shoe has at each longitudinal side projecting beyond the normal width of the rod , and the width of which corresponds approximately to the height of the U-leg of the resulting clutch shoe. The starting blank for the manufacture of the bar provided with the clutch shoe must therefore have a correspondingly greater width than the finished bar.

Ifølge det tyske offentliggørelsesskrift nr. 26 35 708 er det ganske vist foreslået at fremstille koblingsskoen ved prægepresning af et separat metalpladeemne og derefter at 30 forbinde den med stangdelen, f.eks. ved nitning. Også ved denne fremgangsmåde skal det pladeformede udgangsemne til koblingsskoen imidlertid fremstilles af en pladestrimmel med væsentligt større bredde end udgangsemnet til fremstilling af selve stangdelen.German Patent Publication No. 26 35 708 discloses, however, that it is proposed to make the clutch shoe by embossing a separate metal plate blank and then to connect it to the rod part, e.g. by riveting. However, in this method, too, the plate-shaped starting blank for the coupling shoe must, however, be made of a sheet strip of substantially greater width than the starting blank for producing the rod part itself.

35 Til fremstilling af stænger, som har ud i ét stykke med selve stangen udformede koblingssko er det endvidere fra tysk brugsmønster nr. 76 03 047 kendt at anvende et fladt DK 171516 B1 2 materiale, fortrinsvis båndstål, der har samme bredde over hele dets længde. Til dannelse af koblingsskoen er der nær båndstrimlens ende udformet fra kanterne af dennes bredside udragende dele, der udgøres af bøjleagtigt i materialet 5 udprægede lister, hvis inderside består af en tandformet snitflade.35 For the manufacture of rods having integral coupling shoes formed with the rod itself, it is further known from German usage pattern no. 76 03 047 to use a flat DK 171516 B1 2 material, preferably strip steel having the same width over its entire length. . To form the coupling shoe, near the end of the strip is formed from the edges of its wide side projecting portions, which are made of bend-like strips embossed in the material 5, the inside of which consists of a tooth-shaped cut surface.

Det er endvidere foreslået (jfr. tysk brugsmønster nr. 83 24 586) at anvende til forbindelse af betjeningsstangbeslags føringsskinner tjenende koblihgssko, f.eks. af den 10 fra det tyske brugsmønster nr. 76 03 047 kendte art til \ dannelse af længdeindstillelige stangkoblinger mellem sådanne betjeningsstangbeslags betjeningsstænger. Da koblingsskoene i dette tilfælde imidlertid er udsat for konstant skiftende længdeforskydningskræfter, har det vist sig, at der ved en 15 "tung gang" af beslagdelene, der ikke altid kan undgås, kan optræde beskadigelse eller i det mindste deformering af koblingsskoene, hvilket forringer funktionen af de dermed forsynede betjeningsstangbeslag.It is further proposed (cf. German usage pattern no. 83 24 586) to be used for connection of actuator bar guide rails serving coupling shoes, e.g. of the 10 known from German usage pattern no. 76 03 047 for forming longitudinally adjustable rod couplings between such control rod fittings. However, since the clutch shoes in this case are subject to constantly changing longitudinal shear forces, it has been found that a 15 "heavy gait" of the bracket parts, which can not always be avoided, can cause damage or at least deformation of the clutch shoes, which impairs the function of the control rod brackets thus provided.

Formålet med opfindelsen er at tilvejebringe en 20 fremgangsmåde til fremstilling af en længdeindstillelig stangkobling af den indledningsvis nævnte art, ved hvilken der til fremstilling af den med koblingsskoen forsynede stang kan anvendes en strimmel af fladt materiale, der over hele sin længde har samme bredde. Samtidig skal koblingsskoen 25 inden for båndmaterialets udgangsbredde være forsynet med fra dens ene bredside udragende U-sidestykker, dvs. sidevægge, der over hele deres længde er udformede i ét stykke med stangen og ved deres inderside er udformet med en fortanding.SUMMARY OF THE INVENTION The object of the invention is to provide a method for producing a length adjustable rod coupling of the kind mentioned above, in which a strip of flat material having the same width can be used for the manufacture of the coupling shoe. At the same time, the coupling shoe 25 within the exit width of the strip material must be provided with U-side projections extending from one wide side, ie. sidewalls which are formed in one piece with the rod over their entire length and are formed with a tooth at the inside.

Dette formål opnås ved hjælp af de i den kende-30 tegnende del af krav 1 angivne foranstaltninger.This object is achieved by the measures set out in the characterizing part of claim 1.

Det har vist sig, at de til dannelse af koblingsskoens U-sidestykker, dvs sidevægge, nødvendige, ud over bredden af det normale betjeningsstangtværsnit ragende . sidestykker kan dannes og forsynes med den fine fortanding 35 ved en passende kraftig fladtrykning af et kort endeafsnit af udgangsmaterialet, uden at koblingsskoens funktionsdygtighed forringes. Den ved fladtrykningen opnåede komprimering af 3 DK 171516 B1 materialet sikrer nemlig, at den U-formede koblingssko får en formstabilitet, der er flere gange højere end ved de bøjle-agtigt fra det flade materiales plan optrykte dele.It has been found that, in addition to the width of the normal operating rod cross-section, they are required to form the U-side pieces of the coupling shoe, ie side walls. laterals may be formed and provided with the fine tooth 35 by a suitable strong flat printing of a short end portion of the starting material without impairing the functionality of the clutch shoe. Namely, the compression of the material obtained at the flat pressure ensures that the U-shaped coupling shoe obtains a shape stability that is several times higher than that of the parts of the flat material which are printed from the plane of the flat material.

Yderligere detaljer ved opfindelsen fremgår af 5 underkravene. Opfindelsen forklares nærmere i det følgende under henvisning til tegningen. På tegningen viser: fig. 1 en perspektivisk tegning af en længdeindstillelig stangkobling ifølge opfindelsen med en koblingssko i tilnærmelsesvis naturlig størrelse og med delene trukket ud fra 10 hinanden, \ fig. 2 i større målestok et tværsnit gennem koblingsskoen, fig. 3 ligeledes i større målestok et sidebillede delvist i længdesnit af koblingsskoen, fig. 4 en plantegning af den i fig. 2 og 3 viste koblingssko, 15 og fig. 5-7 tre særligt fordelagtige fremgangsmådetrin til fremstilling af koblingsskoene til længdeindstillelige stangkoblinger ifølge opfindelsen.Further details of the invention are set forth in the 5 subclaims. The invention will be explained in more detail below with reference to the drawings. In the drawing: FIG. 1 is a perspective view of a longitudinally adjustable rod coupling according to the invention with a coupling shoe of approximately natural size and with the parts pulled apart; FIG. 2 is an enlarged cross-section through the coupling shoe; FIG. Fig. 3 is also a larger-scale side view partly in longitudinal section of the clutch shoe; 4 is a plan view of the embodiment of FIG. 2 and 3, coupling shoes 15 and FIG. 5-7 three particularly advantageous process steps for manufacturing the coupling shoes for length adjustable rod couplings according to the invention.

I fig. 1 ses en længdeindstillelig stangkobling 1 20 med en første stang 2. Betjeningsstangen 2 har ved sin frie ende en i tværsnit tilnærmelsesvis U-formet, opad åben koblingssko 3, der ved indersiden af i det mindste den ene, men fortrinsvis af begge U-grenene, dvs. sidevæggene 4, er forsynet med en fortanding 5, hvis tandprofiler strækker sig 25 i det væsentlige på tværs af betjeningsstangdelens 2 længderetning .In FIG. 1, a longitudinally adjustable rod coupling 1 20 is shown with a first rod 2. The operating rod 2 has at its free end an approximately U-shaped, upwardly open coupling shoe 3, which at the inside of at least one, but preferably both U-branches. , ie the side walls 4, are provided with a tooth 5 whose tooth profiles extend substantially transversely of the longitudinal direction of the operating rod part 2.

En anden stang 6 består af i tværsnit rektangulært fladt materiale og er ved i det mindste den ene, men fortrinsvis ved begge smalsider forsynet med en fortanding 7, 30 der er komplementær til fortandingen 5. Betjeningsstangen 6 kan med et hvilket som helst ønsket afsnit af sin med fortandingen 7 forsynede længde ovenfra skydes formsluttende ind i fortandingen 5 i betjeningsstangens 2 koblingssko 3. Da koblingsskoens 3 to sidevægge 4 herved griber om betjenings-35 stangdelens 6 smalsider, kan de ved den fælles længdeforskydning af betjeningsstængerne 2 og 6 optrædende tværkræfter optages sikker af koblingsskoen 2 og 3, uden at koblingsfor- 4 DK 171516 B1 4 bindeisen kan forskydes ud af koblingsindgrebet.Another bar 6 consists of rectangular flat material in cross section and is provided with at least one, but preferably at both narrow sides, a tooth 7, 30 which is complementary to the tooth 5. The control rod 6 can with any desired section of its length provided with the toothed 7 from above is molded formally into the toothed 5 in the coupling shoe of the actuator 2 3. As the two side walls 4 of the coupling shoe 3 hereby engage the narrow sides of the actuator rod 6, the transverse forces occurring at the joint longitudinal displacement of the actuating bars 2 and 6 can be absorbed. of the clutch shoe 2 and 3, without the clutch slider being able to be displaced from the clutch engagement.

Væsentligt ved stangkoblingen ifølge fig. 1 er, at koblingsskoen 3 består af samme materiale som betjeningsstangen 2, nemlig af en strimmel båndstål. Derved kan 5 betjeningsstangdelen 2 og koblingsskoen 3 fremstilles ud i ét stykke, hvor koblingsskoens 3 bunddel 8 skal ligge i samme plan som i det mindste den øverste brede side af betjenings-stangen 2.Significantly at the rod coupling of FIG. 1 is that the clutch shoe 3 consists of the same material as the operating rod 2, namely a strip of steel strip. Thereby, the operating rod part 2 and the clutch shoe 3 can be made in one piece, the bottom part 8 of the clutch shoe 3 having to lie in the same plane as at least the upper wide side of the operating rod 2.

Betjeningsstangen 2 er sammen med koblingsskoen 3 10 fremstillet som en stanse-pressedel, hvor hele koblingsskoen 3, dvs. med dennes to sidevægge 4, bunddel 8 og fortandinger 5, er fremstillet ved en præge-presseproces.The actuating rod 2, together with the coupling shoe 3 10, is manufactured as a die-pressing part, the entire coupling shoe 3, i.e. with its two side walls 4, bottom part 8 and teeth 5, are manufactured by an embossing-pressing process.

Denne præge-presseproces udføres på en forud fastlagt længde af en strimmel båndstål 12 eller lignende, 15 der over hele længden har samme tværsnitsbredde 13 svarende til bredden af betjeningsstangen 2.This embossing pressing process is carried out on a predetermined length of a strip of band steel 12 or the like, having the entire length having the same cross-sectional width 13 corresponding to the width of the operating rod 2.

Ved præge-presseprocessen reduceres tværsnitstykkelsen af båndstrimlen 12 over et længdeafsnit 11 af denne, således at dette får en bredde 14, der kan være 20 tilnærmelsesvis dobbelt så stor som båndstrimlens 12 oprindelige bredde 13.In the embossing process, the cross-sectional thickness of the strip strip 12 is reduced over a longitudinal section 11 thereof, so as to obtain a width 14 which may be 20 approximately twice the original width 13 of the strip strip 12.

Ved denne præge-presseproces fremstilles samtidigt fortandingens 5 tandmellemrum 15 i form af fordybede ned-presninger i længdeafsnittet 11 med den reducerede tykkelse 25 og på en sådan måde, at topfladerne af de mellem hver to efter hinanden følgende tandmellemrum 15 dannede tænder 16 forbliver i det i dets tykkelse reducerede længdeafsnits 11 plan.In this embossing process, the tooth spacing 15 of the tooth 5 is simultaneously produced in the form of deepened depressions in the longitudinal section 11 with the reduced thickness 25 and in such a way that the top surfaces of the teeth 16 formed between each successive tooth space 15 remain in the in its thickness, the longitudinal section 11 reduced the plane.

Som det tydeligt ses i fig. 5, strækker de ved 30 præge-presseprocessen dannede tandmellemrum 15 sig over hele bredden 14 af det i sin tykkelse reducerede længdeafsnit 11.As is clearly seen in FIG. 5, the tooth gaps 15 formed by the embossing press process extend over the entire width 14 of the length section 11 reduced in thickness.

I et umiddelbart efter præge-presseprocessen følgende arbejdstrin bukkes længdeafsnittets 11 sidestykker 18, der med målet 17 rager ud fra hver sin side af båndstrim-35 len 12, i det mindste tilnærmelsesvis 90® opad ud af længdeafsnittets 11 plan og danner derved koblingsskoens 3 to sidevægge 4 med den indvendige fortanding 5, således som det DK 171516 B1 5 ses i fig. 6.In a work step immediately following the embossing process, the lateral portions 18 of the longitudinal section 11 protruding from each side of the ribbon strip 12 are bent at least approximately 90 ° upwards from the plane of the longitudinal section 11, thereby forming two sidewalls 4 with the internal tooth 5, as seen in FIG. 6th

Opretningen af sidestykkerne 18 sker hensigtsmæssigt på en sådan måde, at ydersiderne af koblingsskoens 3 sidevægge i det mindste tilnærmelsesvis kommer til at flugte 5 med smalsiderne 19 af båndstrimlen 12 henholdsvis betjeningsstangen 2.The side pieces 18 are conveniently arranged in such a way that the outer sides of the side walls of the coupling shoe 3 will at least approximately align 5 with the narrow sides 19 of the strip strip 12 and the operating rod 2, respectively.

Til opretningen af sidestykkerne 18 til dannelse af koblingsskoens 3 sidevægge 4 kan anvendes en bukkematrice, der på sin i presseretningen forreste ende i det væsentlige 10 er glat og på sine længdesider har profileringer, der svarer til tandmellemrummene 15 og tænderne 16. Derved opnås ved opretningen af sidestykkerne 18, at disses indvendige fortåndinger 5 under bøjningsdeformeringen bibeholder deres nøjagtige orientering på tværs af betjeningsstangdelens 15 længdeakseretning. Samtidig bliver de områder af tænderne 16, der kommer til at befinde sig i koblingsskoens 3 bund 8, delvist fladtrykte, således at deres topflader bliver bredere end topfladerne af fortandingens 5 tænder, og tandmellemrummene 15 bliver tilsvarende smallere (fig. 3).For the alignment of the sidewalls 18 to form the sidewalls 4 of the clutch shoe 3, a bending die can be used which, at its forward end end, is substantially smooth and has longitudinal sides corresponding to the tooth gaps 15 and teeth 16. This is achieved by the alignment. of the side pieces 18, that their internal teeth 5 during the bending deformation maintain their exact orientation across the longitudinal axis of the operating rod part 15. At the same time, the areas of the teeth 16 that are in the bottom 8 of the clutch shoe 3 are partially flattened so that their top surfaces become wider than the top surfaces of the teeth 5 and the tooth spaces 15 become correspondingly narrower (Fig. 3).

20 Bukkeværktøjet til opretning af sidestykkerne 18 kan udformes på en sådan måde, at det forkrøpper koblingsskoens 3 bund 8 så langt opad i forhold til den nederste bredside af båndmaterialestrimlen 12 henholdsvis betjeningsstangen 2, at inderfladen af bunden 8 kommer til at ligge i 25 det mindste i samme plan som den øverste bredside af båndmaterialestrimlen .The bending tool for aligning the side pieces 18 can be designed such that it cripples the bottom 8 of the coupling shoe 3 so far upwards relative to the lower width side of the strip material 12 and the operating rod 2, respectively, that the inner surface of the bottom 8 will be at least 25 in the same plane as the top wide side of the tape material strip.

I fig. 5 og 6 ses en særlig fordelagtig fremstillingsmåde til fremstilling af en ud i ét stykke med en koblingssko 3 udformet betjeningsstangdel 2.In FIG. 5 and 6, a particularly advantageous method of manufacture is shown for producing a one-piece operating rod part 2 formed with a clutch shoe 3.

30 Det ved præge-presseprocessen til en større bredde fladtrykte længdeafsnit 11 er her dimensioneret på en sådan måde, at det muliggør en samtidig dannelse af to koblingssko 3 med dertil tilsluttede betjeningsstænger 2, dersom man sørger for, at der i det mindste længdeområde af længdeafs-35 nittet 11 er udformet udsparinger 20 i sidestykkerne, der afbryder koblingsskoenes 3 sidevægge 4. I dette område kan der anvendes en stansekniv 21 som vist i fig. 7. Efter DK 171516 B1 6 overklipning ved hjælp af denne vil der være fremstillet to betjeningsstænger 2 med hver sin koblingssko 3 i spejlvendt stilling i forhold til hinanden.30 The longitudinal flat section 11 of the embossed pressing process for a larger width is dimensioned in such a way that it allows for the simultaneous formation of two coupling shoes 3 with associated control rods 2, provided that at least the longitudinal region of the longitudinal section -35 rivet 11 is formed recesses 20 in the side pieces which interrupt the sidewalls 4 of the coupling shoes 3. In this area a punching knife 21 as shown in FIG. 7. Following DK 171516 B1 6 clipping by means of this, two operating rods 2 with each coupling shoe 3 in mirrored position will be made in relation to each other.

Fig. 2-4 viser i større målestok udformningen af 5 koblingsskoen 3 på en sådan betjeningsstang 2. Det ses navnlig her, at totaltykkelsen 9 af koblingsskoens 3 bund 8 og sidevægge 4 svarer til ca. 2/3 af tykkelsen 10 af betjeningsstangen 2. i fig. 2 og 3 ses endvidere, at tandmellemrummene 15 mellem tænderne 5 har en dybde og dermed, at 10 tænderne 16 har en højde, der tilnærmelsesvis svarer til ca. den halve totaltykkelse 9.FIG. 2-4 show, on a larger scale, the design of the clutch shoe 3 on such a control rod 2. It is seen in particular here that the total thickness 9 of the bottom 8 and the side walls 4 of the clutch shoe 3 corresponds to approx. 2/3 of the thickness 10 of the control rod 2. in FIG. 2 and 3, it is further seen that the tooth gaps 15 between the teeth 5 have a depth and thus that the teeth 16 have a height approximately equal to approx. the half total thickness 9.

I fig. 3 er det desuden antydet, at topfladerne af tænderne 16 i koblingsskoens 3 bund 8 på grund af fladtrykningen af disse tænder 16 danner en forøget understøtnings-15 flade for betjeningsstangen 6, der skal indskydes, idet tandmellemrummene 15 mellem tænderne 16 er formindskede.In FIG. 3, it is further suggested that the top surfaces of the teeth 16 in the bottom 8 of the coupling shoe 3, due to the flat pressure of these teeth 16, form an increased support surface 15 for the operating rod 6 to be inserted, the tooth gaps 15 between the teeth 16 being reduced.

Dersom stængerne, fortrinsvis betjeningsstængerne 2, kun behøver være forholdsvis korte, kan disse af klippes af materialebåndstrimler på tværs af disses længderetning, inden 20 de underkastes præge-presseprocessen. Stansepresserne, der anvendes til fremstilling af disse korte stænger henholdsvis betjeningsstænger, kan da arbejde med store hastigheder og derved muliggøres en billig masseproduktion.If the rods, preferably the operating rods 2, need only be relatively short, these can be cut by strips of material across their longitudinal direction before being subjected to the embossing process. The punching presses used in the manufacture of these short rods and control rods can then work at high speeds, thereby enabling a cheap mass production.

««

Claims

Method according to claim 1, characterized in that the profile height of the tooth (5) is imparted about half the thickness of the flat-width bar section (11) to the larger width and that the profile height of the fine tooth (5) is formed to approximately one third of the the thickness (10) of the normal bar cross section. . Method according to claim 1 or 2, characterized in that the material thickness (10) of the normal bar cross section is flattened to a thickness (9) at a pressing step, and that the width (14) simultaneously becomes twice the width (13) of it. normal bar cross sections. DK 171516 B1

Method according to any one of claims 1-3, characterized in that the tooth profile (16) of the preamble (5) in the coupling shoe (3) with the normal rod section (10/13) parallel bottom section (8) in the at least partially 5 flattened.

Method according to any one of claims 1-4, characterized in that the flat-printed bar cross-section (11) with its bottom section (8) and with its side pieces (18) provided with the tooth (5) is displaced upwards in parallel. 10, with an inner surface having the bottom sections (8) bent upward at least to the upper plane of the adjacent normal bar cross section.

Method according to any one of claims 1-5, characterized in that a strip strip (12) is flattened in an area corresponding to twice the length of the coupling shoe (3) and provided with the tooth (5) and then an overcut (21) is made at the center of the tooth (5).