EP0756466A1 - Process for producing an air mattress with a pump part and a part to be inflated - Google Patents

Process for producing an air mattress with a pump part and a part to be inflated

Info

Publication number
EP0756466A1
EP0756466A1 EP94930199A EP94930199A EP0756466A1 EP 0756466 A1 EP0756466 A1 EP 0756466A1 EP 94930199 A EP94930199 A EP 94930199A EP 94930199 A EP94930199 A EP 94930199A EP 0756466 A1 EP0756466 A1 EP 0756466A1
Authority
EP
European Patent Office
Prior art keywords
wall
tool
air mattress
pump part
cover skin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94930199A
Other languages
German (de)
French (fr)
Other versions
EP0756466B1 (en
Inventor
Josef Graf
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Individual
Original Assignee
Individual
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Filing date
Publication date
Family has litigation
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Application filed by Individual filed Critical Individual
Publication of EP0756466A1 publication Critical patent/EP0756466A1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A47C27/084—Fluid mattresses or cushions of pneumatic type self inflating

Definitions

  • the invention relates to a method for producing an air mattress with the features specified in the preamble of claim 1.
  • air mattress with these features has become known, for example, from WO 94/03089.
  • air can enter the interior of the pumping part through this opening by opening the inlet opening.
  • the propellant housed in the pump section increases in volume. until the pump part is filled with air to some extent.
  • the pump part is pressed together by the foot of the user, the foot closing the inlet opening. Air now enters the part to be inflated through the one-way outlet valve. This pumping process is repeated until the part to be inflated is inflated somewhat more than is desired in the end result.
  • a propellant material is a compressible material that increases in volume when air enters. Such a material is, for example, open-cell synthetic foam material.
  • the invention has for its object to enable the manufacture of the mattress, in particular the welding of the pump part wall, in a particularly economical manner.
  • An indivisible tool can be used if the pump part is arranged in a corner of the air mattress.
  • FIG. 2 shows a section perpendicular to FIG. 1 through the pump part
  • FIG. 3 shows a perspective view of a partially cut open air mattress with a pump part lying inside the mattress
  • FIG. 4 shows a perspective view of the pump part wall to be welded in between the cover skins
  • FIG. 5 shows a perspective view of a block of the propellant material to be inserted into the pump part
  • Fig. 7 is a perspective view of the insert formed from the elements shown in Figs. 4 and 6; 8 shows the top view of a partially cut mattress with a pump part arranged in a corner of the mattress;
  • Fig. 9 is a side view of the subject of Fig. 8.
  • FIG. 10 shows a perspective view of a block of the propellant material to be inserted into the pump part
  • FIG. 11 is a perspective view showing the position of the pump part wall before welding
  • FIG. 12 is a top view of the pump part wall shown in FIG. 11;
  • FIG. 13 is a perspective view of the pump part wall with the tool to be positioned therein.
  • Fig. 1 the welding of the pump part wall 4 is shown in the embodiment shown in Figs. 1 to 7.
  • a metallic tool 12 in the form of a web is located between the cover skins.
  • the wall 4 consisting of a thermoplastic film, the edges 4a of which are turned up and down around the edges of the tool 12.
  • the edges 4a lie between the tool 12 and the upper cover skin la or the lower cover skin lb.
  • On the upper side of the pump part 2 there is an inlet opening 9 formed in the cover skin 1a.
  • the inlet opening 9 can also easily be on the opposite side.
  • web tabs 5 connected to the wall 4 protrude, which in the further course of the method are still connected diagonally to the upper la or lower cover skin 1b.
  • the bridge tabs 5 serve to prevent the wall 4 from denting as the pressure in the part to be inflated increases.
  • walls 4 lying opposite one another are connected to one another by a pull tab 30. If a block 6 of the propellant is used, it must be divided.
  • the partially broken block 6 shows the view of the inlet opening 10a of a one-way outlet valve in the form of a film valve 10.
  • FIG. 2 shows a representation corresponding to FIG. 1 for the welding in of the pump part wall 20 in the case of a pump part arranged in a corner of the air mattress.
  • the wall 20 here consists of two film strips which are connected to one another at one longitudinal edge by a weld seam 20a. The edges of the film strips overlap the upper or lower edge of a tool 25. Between the plates 29 and the respective edge of the film strip there is the upper cover skin 17a and the lower cover skin 17b. Cover skin and edge of the film strip are each connected to one another by a weld seam 24.
  • a closure body belongs to inlet opening 23.
  • the free end of a pull tab 30, which is passed through a slot 32 in the tool 25, is simultaneously fastened with the weld seam 20a.
  • the other end of the pull tab 30 is welded to the edge of the air mattress 1 in a somewhat tightened position of the pull tab 30.
  • the pull tab 30 has holes 31 in its central region.
  • the edges of the cover skins 1a and 1b are connected to a circumferential side wall 3 of the air mattress by weld seams 3a.
  • the pump part 2 is arranged near the edge of the air mattress so that the user can stand on the ground with one leg when pumping.
  • FIG 4 shows the wall 4 of the pump part 2 in the configuration as it appears after the air mattress 1 is inflated.
  • the edges 4a of the wall 4 are connected to the upper cover skin la or to the lower cover skin 1b, likewise the free edges of the pull tabs 5.
  • the small opening 11 ensures a small backflow of air in order to produce the desired pressure balance between the pump part 2 and the part to be pumped.
  • the block 6 shown in FIG. 5 has a central, continuous recess 7 opposite the inlet opening 9, which ensures that the inlet opening 9 cannot be unintentionally closed by the block 6.
  • the division of the block 6 when using the pull tab 30 is also indicated in this figure.
  • the tool 12 shown in FIG. 6 is divided along a plane running perpendicular to the later plane of the air mattress 1. In the two parts there are parts of the slots 15 for the passage of the web plates 5.
  • the parts of the tool 12 can be centered against one another by bolts 13 on the end faces of one part and through corresponding holes 14 in the end face of the other part.
  • the bore 16 serves for the passage of the foil valve 10.
  • FIG. 7 shows the insert part formed from wall 4 and tool 12 as it is inserted between the cover skins 1a and 1b. It can be seen particularly clearly here how the edges 4a of the wall 4 are turned over around the edges of the tool 12. The upturned edges 4a are easily deformable, so that there are no difficulties in removing the tool 12.
  • the pump part designated here 18 is arranged in the corner of an air mattress section 17.
  • the upper cover skin 17a and the lower cover skin 17b are connected to one another at the edge by a circumferential weld seam 19, the connected cover skins simultaneously forming parts of the side wall of the pump part 18.
  • the inlet opening 23 is located in the upper cover skin 17a, which can be seen particularly from FIG. 9.
  • the weld seam 24 is also shown there, on which the partial pump wall 20 is connected to the cover skins 17a and 17b.
  • FIG. 10 shows the block 21 of the propellant material to be inserted into the pump part 18, which, like the block 6 in FIG. 5, has a recess 22 and is divided when a pull tab 13 is used.
  • the block 21 is expediently only after the wall 20 has been welded in the pump part 18 used. This is possible because the pump part 18 is laterally open before the weld 19 is produced.
  • the wall 20 consists of two film strips connected to each other on a longitudinal seam by a weld seam 20a.
  • the wall 20 is connected to the cover skins 17a and 17b.
  • the edges of the tool 25 are positioned on the inside of this weld seam 24 during the welding process.
  • the width of the film strips forming the wall 20 decreases in the transition region 26 to the edge of the air mattress defined by the weld seam 19, which corresponds to the decrease in the height of the air mattress in the inflated state.
  • the film strips have a desired expansion point 27 in the form of a short incision with a small bore in order to prevent the very thin film strips from tearing.
  • the free ends of the film strips are welded to one another by means of the weld seam 19.
  • four foils lie on top of one another during the production of the weld seam 19, namely the cover skins 17a and 17b and the foil strips forming the wall 20.
  • the height 28 of the inflated air mattress is determined by the distance 28 between weld seam 24 and weld seam 20a, because when inflating the film strips are aligned, and twice the distance 28 then corresponds to the distance between the cover skins 17a and 17b.
  • the height of the inflated mattress can thus be determined by varying the distance 28. From FIG. 12 as well as from FIG. 13 it can be seen that one end of a pull tab 30 is fixed to the pump part wall 20 by the weld seam 20a.
  • the arrows 33 show the manner in which the tool is inserted between the film strips of the wall 20 and is removed again after the wall 20 has been welded in between the cover skins 17a and 17b.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Massaging Devices (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

PCT No. PCT/EP94/03451 Sec. 371 Date Nov. 27, 1996 Sec. 102(e) Date Nov. 27, 1996 PCT Filed Oct. 20, 1994 PCT Pub. No. WO95/28112 PCT Pub. Date Oct. 26, 1995The invention relates to a method of producing an air mattress, which comprises a pump part and a part, which is to be pumped up. A propellant is disposed in the pump part and the wall, which separates the pump part from the part, which is to be pumped up, has a one-way valve and a small opening, through which air can flow back from the part, which is to be pumped up, into the pump part. An inlet opening is disposed in the pump part and an outlet opening is disposed in the part, which is to be pumped up. Pursuant to the invention, a metallic tool is used for welding the pump part wall between the upper and lower covering skins of the air mattress. The tool forms one part of a high-frequency welding machine, having two plates, which lie against the outside of the covering skins. The tool is removed before the edge seals of the air mattress are produced. When the pump part is disposed within the air mattress, a dividable tool is used.

Description

Verfahren zum Herstellen einer Luftmatratze mit einem als Pumpe wirkenden Teil und einem durch die Pumpe aufzupumpenden Teil Method for producing an air mattress with a part acting as a pump and a part to be inflated by the pump
Die Erfindung betrifft ein Verfahren zum Herstellen einer Luftmatratze mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen.The invention relates to a method for producing an air mattress with the features specified in the preamble of claim 1.
Eine Luftmatratze mit diesen Merkmalen ist z.B. durch die WO 94/03089 bekannt geworden. Bei der bekannten Luftmatratze kann durch Öffnen der Einlaßöffnung durch diese Öffnung Luft in den Innen¬ raum des Pumpteils eintreten. Bei Zutritt von Luft nimmt das im Pumpteil untergebrachte Treibmaterial an Volumen zu. bis der Pumpteil einigermaßen mit Luft gefüllt ist. Jetzt wird z.B. durch den Fuß des Benutzers der Pumpteil zusammengedrückt, wobei der Fuß die Einlaßöff¬ nung verschließt. Es gelangt nun Luft durch das Einweg-Auslaßventil in den aufzupumpenden Teil. Dieser Pumpvorgang wiederholt sich so lange, bis der aufzupumpende Teil etwas mehr, als im Endergebnis erwünscht ist, aufgeblasen ist. Wird dann mit dem Pumpen aufgehört und die Einlaßöffnung verschlossen, dann fließt ein Teil der Luft über die kleine Öffnung in den Pumpteil zurück, bis in dem vom Pumpteil und dem aufzupumpenden Teil gebildeten geschlossenen System der gleiche Druck herrscht. Die Matratze ist damit gebrauchsfertig. Zum Entleeren der Luftmatratze wird die Auslaßöffnung geöffnet. Durch Zusammenrollen der Luftmatratze vom Pumpteil aus wird dann die Luft sowohl aus dem Pumpteil als auch aus dem aufzupumpenden Teil ent- fernt, indem sie über die Auslaßöffnung austritt. Als Treibmaterial ist ein zusammendrückbares Material zu verstehen, welches bei Luftzutritt an Volumen zunimmt. Ein solches Material ist z.B. offenzelliges Kunst¬ schaummaterial.An air mattress with these features has become known, for example, from WO 94/03089. In the known air mattress, air can enter the interior of the pumping part through this opening by opening the inlet opening. When air enters, the propellant housed in the pump section increases in volume. until the pump part is filled with air to some extent. Now, for example, the pump part is pressed together by the foot of the user, the foot closing the inlet opening. Air now enters the part to be inflated through the one-way outlet valve. This pumping process is repeated until the part to be inflated is inflated somewhat more than is desired in the end result. When the pumping is then stopped and the inlet opening is closed, part of the air flows back through the small opening into the pump part until the same pressure prevails in the closed system formed by the pump part and the part to be inflated. The mattress is now ready for use. The outlet opening is opened to empty the air mattress. By rolling up the air mattress from the pump part, the air is then extracted both from the pump part and from the part to be inflated. remotely by exiting through the outlet opening. A propellant material is a compressible material that increases in volume when air enters. Such a material is, for example, open-cell synthetic foam material.
Über die Herstellung der Matratze, insbesondere über das Einschweißen der den Pumpteil vom aufzupumpenden Teil trennenden Wand, ist in der genannten Druckschrift nichts ausgesagt.Nothing is said in the publication mentioned about the manufacture of the mattress, in particular about the welding in of the wall separating the pump part from the part to be inflated.
Der Erfindung liegt die Aufgabe zugrunde, die Herstellung der Matratze, insbesondere das Einschweißen der Pumpteilwand, in besonders wirt¬ schaftlicher Weise zu ermöglichen.The invention has for its object to enable the manufacture of the mattress, in particular the welding of the pump part wall, in a particularly economical manner.
Die Lösung dieser Aufgabe wird mit den im Anspruch 1 angegebenen Merkmalen erreicht.This object is achieved with the features specified in claim 1.
Durch die Einschaltung eines metallischen Werkzeugs zwischen die Platten der Hochfrequenzschweißmaschine wird dafür gesorgt, daß über dieses Werkzeug ein Stromfluß erfolgt, der eine Erwärmung und damit ein Verschweißen der zwischen einer Platte und dem Werkzeug eingeleg¬ ten thermoplastischen Folien zur Folge hat. Nach dem Einschweißen der Pumpteilwand wird das Werkzeug entfernt, und erst abschließend werden die Ränder der Deckhäute miteinander verbunden.By inserting a metallic tool between the plates of the high-frequency welding machine it is ensured that a current flows through this tool, which results in heating and thus welding of the thermoplastic foils inserted between a plate and the tool. After the pumping part wall has been welded in, the tool is removed and only then are the edges of the cover skins joined together.
Vorteilhafte Ausführungsformen des im Anspruch 1 beschriebenen Ver¬ fahrens sind Gegenstand der Unteransprüche.Advantageous embodiments of the method described in claim 1 are the subject of the subclaims.
Wichtig ist dabei vor allem, daß beim Anordnen des Pumpteils innerhalb der Luftmatratze eine in der Draufsicht etwa rahmenförmige Folie und ein ebenfalls etwa rahmenförmiges Werkzeug eingesetzt werden. In diesem Fall muß das Werkzeug teilbar sein, weil es sonst nicht entfernt werden könnte.It is particularly important that when the pump part is arranged inside the air mattress, a film which is approximately frame-shaped in plan view and an approximately frame-shaped tool are used. In In this case, the tool must be divisible, otherwise it could not be removed.
Ein nichtteilbares Werkzeug kann dann verwendet werden, wenn der Pumpteil in einer Ecke der Luftmatratze angeordnet wird.An indivisible tool can be used if the pump part is arranged in a corner of the air mattress.
Im folgenden wird die Erfindung anhand von in der Zeichnung darge¬ stellten Ausführungsbeispielen näher erläutert. Es zeigt:The invention is explained in more detail below on the basis of exemplary embodiments illustrated in the drawing. It shows:
Fig. 1 einen Schnitt durch den Pumpteil während des Einschweißvor¬ gangs;1 shows a section through the pump part during the welding operation;
Fig. 2 einen zur Fig. 1 senkrechten Schnitt durch den Pumpteil;2 shows a section perpendicular to FIG. 1 through the pump part;
Fig. 3 eine perspektivische Ansicht auf eine zum Teil aufgeschnittene Luftmatratze mit einem innerhalb der Matratze liegenden Pump¬ teil;3 shows a perspective view of a partially cut open air mattress with a pump part lying inside the mattress;
Fig. 4 eine perspektivische Ansicht der zwischen den Deckhäuten einzuschweißenden Pumpteilwand;4 shows a perspective view of the pump part wall to be welded in between the cover skins;
Fig. 5 eine perspektivische Ansicht eines in den Pumpteil einzusetzen¬ den Blocks des Treibmaterials;5 shows a perspective view of a block of the propellant material to be inserted into the pump part;
Fig. 6 eine perspektivische Ansicht des verwendeten Werkzeugs;6 is a perspective view of the tool used;
Fig. 7 eine perspektivische Ansicht des aus dem in den Fig. 4 und 6 darstellten Elementen gebildeten Einsatzteils; Fig. 8 die Draufsicht auf eine teilweise aufgeschnittene Matratze mit einem in einer Ecke der Matratze angeordneten Pumpteil;Fig. 7 is a perspective view of the insert formed from the elements shown in Figs. 4 and 6; 8 shows the top view of a partially cut mattress with a pump part arranged in a corner of the mattress;
Fig. 9 eine Seitenansicht des Gegenstandes der Fig. 8;Fig. 9 is a side view of the subject of Fig. 8;
Fig. 10 eine perspektivische Ansicht eines in den Pumpteil einzusetzen¬ den Blocks des Treibmaterials;10 shows a perspective view of a block of the propellant material to be inserted into the pump part;
Fig. 11 eine perspektivische Ansicht mit Darstellung der Lage der Pumpteilwand vor dem Einschweißen;11 is a perspective view showing the position of the pump part wall before welding;
Fig. 12 die Draufsicht auf die in Fig. 11 dargestellte Pumpteilwand; undFIG. 12 is a top view of the pump part wall shown in FIG. 11; and
Fig. 13 eine perspektivische Ansicht der Pumpteilwand mit dem darin zu positionierenden Werkzeug.13 is a perspective view of the pump part wall with the tool to be positioned therein.
In Fig. 1 ist das Einschweißen der Pumpteilwand 4 bei dem in den Fig. 1 bis 7 dargestellten Ausführungsbeispiel gezeigt.In Fig. 1 the welding of the pump part wall 4 is shown in the embodiment shown in Figs. 1 to 7.
An der Außenseite der Deckhäute la und lb der Luftmatratze 1 liegen in Richtung der Pfeile bewegbare Platten 29 einer Hochfrequenzschweiß- maschine an. Zwischen den Deckhäuten befindet sich ein metallisches Werkzeug 12 in Form eines Steges. An der Innenseite des Werkzeugs 12 liegt die aus einer thermoplastischen Folie bestehende Wand 4 an, deren Ränder 4a oben und unten um die Ränder des Werkzeugs 12 umgestülpt sind. Die Ränder 4a liegen zwischen dem Werkzeug 12 und der oberen Deckhaut la bzw. der unteren Deckhaut lb. An der Ober¬ seite des Pumpteils 2 befindet sich eine in der Deckhaut la ausgebildete Einlaßöffnung 9. Die Einlaßöffnung 9 kann ohne weiteres auch auf der gegenüberliegenden Seite liegen. Im Pumpteil 2 befindet sich ein Block 6 aus einem Treibmaterial, insbesondere aus einem offenzelligen Schaumstoffkörper.On the outside of the cover skins 1a and 1b of the air mattress 1, there are movable plates 29 of a high-frequency welding machine in the direction of the arrows. A metallic tool 12 in the form of a web is located between the cover skins. On the inside of the tool 12 lies the wall 4 consisting of a thermoplastic film, the edges 4a of which are turned up and down around the edges of the tool 12. The edges 4a lie between the tool 12 and the upper cover skin la or the lower cover skin lb. On the upper side of the pump part 2 there is an inlet opening 9 formed in the cover skin 1a. The inlet opening 9 can also easily be on the opposite side. In the pump part 2 there is a block 6 made of a propellant, in particular an open-cell foam body.
An beiden Seiten des Werkzeugs 12 ragen mit der Wand 4 verbundene Steglaschen 5 heraus, die im weiteren Verlauf des Verfahrens noch diagonal mit der oberen la bzw. unteren Deckhaut lb verbunden wer¬ den. Die Steglaschen 5 dienen dazu, ein Einbeulen der Wand 4 bei zunehmendem Druck im aufzupumpenden Teil zu verhindern.On both sides of the tool 12, web tabs 5 connected to the wall 4 protrude, which in the further course of the method are still connected diagonally to the upper la or lower cover skin 1b. The bridge tabs 5 serve to prevent the wall 4 from denting as the pressure in the part to be inflated increases.
Zur Vermeidung des Ausbeulens nach außen sind einander gegenüber¬ liegende Wände 4 durch eine Zuglasche 30 miteinander verbunden. Bei Verwendung eines Blocks 6 des Treibmaterials muß dieser geteilt ausge¬ bildet sein.To prevent bulging outwards, walls 4 lying opposite one another are connected to one another by a pull tab 30. If a block 6 of the propellant is used, it must be divided.
Der zum Teil aufgebrochen gezeichnete Block 6 gibt den Blick auf die Einlaßöffnung 10a eines Einweg-Auslaßventils in Form eines Folienventils 10 frei.The partially broken block 6 shows the view of the inlet opening 10a of a one-way outlet valve in the form of a film valve 10.
In Fig. 2 ist eine der Fig. 1 entsprechende Darstellung für das Ein- schweißen der Pumpteilwand 20 bei einem in einer Ecke der Luftmatrat¬ ze angeordneten Pumpteil dargestellt. Die Wand 20 besteht hierbei aus zwei Folienstreifen, die an einem Längsrand durch eine Schweißnaht 20a miteinander verbunden werden. Die Ränder der Folienstreifen über¬ greifen den oberen bzw. unteren Rand eines Werkzeugs 25. Zwischen den Platten 29 und dem jeweiligen Rand des Folienstreifens liegt die obere Deckhaut 17a bzw. die untere Deckhaut 17b. Deckhaut und Rand des Folienstreifens werden jeweils durch eine Schweißnaht 24 miteinander verbunden.FIG. 2 shows a representation corresponding to FIG. 1 for the welding in of the pump part wall 20 in the case of a pump part arranged in a corner of the air mattress. The wall 20 here consists of two film strips which are connected to one another at one longitudinal edge by a weld seam 20a. The edges of the film strips overlap the upper or lower edge of a tool 25. Between the plates 29 and the respective edge of the film strip there is the upper cover skin 17a and the lower cover skin 17b. Cover skin and edge of the film strip are each connected to one another by a weld seam 24.
Zu Einlaßöffnung 23 gehört ein nicht dargestellter Verschlußkörper. Mit der Schweißnaht 20a wird zugleich das freie Ende einer Zuglasche 30 befestigt, die durch einen Schlitz 32 im Werkzeug 25 hindurchgeführt ist. Beim Herstellen der Schweißnaht 19 wird das andere Ende der Zuglasche 30 mit dem Rand der Luftmatratze 1 in einigermaßen gestraff- ter Lage der Zuglasche 30 verschweißt. Die Zuglasche 30 weist in ihrem mittleren Bereich Löcher 31 auf.A closure body, not shown, belongs to inlet opening 23. The free end of a pull tab 30, which is passed through a slot 32 in the tool 25, is simultaneously fastened with the weld seam 20a. When producing the weld seam 19, the other end of the pull tab 30 is welded to the edge of the air mattress 1 in a somewhat tightened position of the pull tab 30. The pull tab 30 has holes 31 in its central region.
Wie Fig. 3 zeigt, sind bei einer Anordnung des Pumpteils 2 innerhalb der Luftmatratze die Ränder der Deckhäute la und lb mit einer um- laufenden Seitenwand 3 der Luftmatratze durch Schweißnähte 3a ver¬ bunden. Der Pumpteil 2 ist nahe dem Rand der Luftmatratze angeord¬ net, damit der Benutzer beim Pumpen mit einem Bein auf der Erde stehen kann.As shown in FIG. 3, when the pump part 2 is arranged within the air mattress, the edges of the cover skins 1a and 1b are connected to a circumferential side wall 3 of the air mattress by weld seams 3a. The pump part 2 is arranged near the edge of the air mattress so that the user can stand on the ground with one leg when pumping.
Fig. 4 zeigt die Wand 4 des Pumpteils 2 in der Konfiguration, wie sie sich nach dem Aufpumpen der Luftmatratze 1 darstellt. Die Ränder 4a der Wand 4 sind mit der oberen Deckhaut la bzw. mit der unteren Deckhaut lb verbunden, ebenfalls die freien Ränder der Zuglaschen 5.4 shows the wall 4 of the pump part 2 in the configuration as it appears after the air mattress 1 is inflated. The edges 4a of the wall 4 are connected to the upper cover skin la or to the lower cover skin 1b, likewise the free edges of the pull tabs 5.
Die kleine Öffnung 11 sorgt für eine geringe Rückströmung der Luft, um den gewünschten Druckausgleich zwischen dem Pumpteil 2 und aufzu¬ pumpenden Teil herzustellen.The small opening 11 ensures a small backflow of air in order to produce the desired pressure balance between the pump part 2 and the part to be pumped.
Der in Fig. 5 dargestellte Block 6 hat eine mittlere, der Einlaßöffnung 9 gegenüberliegende durchgehende Ausnehmung 7, die dafür sorgt, daß die Einlaßöffnung 9 nicht ungewollt durch den Block 6 verschlossen werden kann. Angedeutet ist in dieser Figur auch die Teilung des Blocks 6 bei Verwendung der Zuglasche 30. Das in Fig. 6 dargestellte Werkzeug 12 ist längs einer senkrecht zur späteren Ebene der Luftmatratze 1 verlaufenden Ebene geteilt. In den beiden Teilen befinden sich jeweils Teile der Schlitze 15 für das Hin¬ durchführen der Steglaschen 5. Die Teile des Werkzeugs 12 sind durch Bolzen 13 an den Stirnflächen des einen Teils und durch entsprechende Löcher 14 in der Stirnfläche des anderen Teils gegeneinander zentrierbar. Die Bohrung 16 dient zum Hindurchführen des Folienventils 10.The block 6 shown in FIG. 5 has a central, continuous recess 7 opposite the inlet opening 9, which ensures that the inlet opening 9 cannot be unintentionally closed by the block 6. The division of the block 6 when using the pull tab 30 is also indicated in this figure. The tool 12 shown in FIG. 6 is divided along a plane running perpendicular to the later plane of the air mattress 1. In the two parts there are parts of the slots 15 for the passage of the web plates 5. The parts of the tool 12 can be centered against one another by bolts 13 on the end faces of one part and through corresponding holes 14 in the end face of the other part. The bore 16 serves for the passage of the foil valve 10.
Fig. 7 zeigt das aus Wand 4 und Werkzeug 12 gebildete Einsatzteil, wie es zwischen die Deckhäute la und lb eingebracht wird. Besonders deutlich ist hier zu sehen, wie die Ränder 4a der Wand 4 um die Ränder des Werkzeugs 12 umgestülpt sind. Die umgestülpten Ränder 4a sind leicht deformierbar, so daß sich für das Entfernen des Werkzeugs 12 keine Schwierigkeiten ergeben.FIG. 7 shows the insert part formed from wall 4 and tool 12 as it is inserted between the cover skins 1a and 1b. It can be seen particularly clearly here how the edges 4a of the wall 4 are turned over around the edges of the tool 12. The upturned edges 4a are easily deformable, so that there are no difficulties in removing the tool 12.
Gemäß Fig. 8 ist der hier mit 18 bezeichnete Pumpteil in der Ecke eines Luftmatratzenabschnitts 17 angeordnet. Die obere Deckhaut 17a und die untere Deckhaut 17b sind am Rand durch eine umlaufende Schweißnaht 19 miteinander verbunden, wobei die verbundenen Deckhäu- te zugleich Teile der Seitenwand des Pumpteils 18 bilden. Die Einla߬ öffnung 23 befindet sich in der oberen Deckhaut 17a, was besonders aus Fig. 9 zu ersehen ist. Dort ist auch die Schweißnaht 24 dargestellt, an der die Pumpteilwand 20 mit den Deckhäuten 17a und 17b verbunden ist.According to FIG. 8, the pump part designated here 18 is arranged in the corner of an air mattress section 17. The upper cover skin 17a and the lower cover skin 17b are connected to one another at the edge by a circumferential weld seam 19, the connected cover skins simultaneously forming parts of the side wall of the pump part 18. The inlet opening 23 is located in the upper cover skin 17a, which can be seen particularly from FIG. 9. The weld seam 24 is also shown there, on which the partial pump wall 20 is connected to the cover skins 17a and 17b.
Fig. 10 zeigt den in den Pumpteil 18 einzusetzenden Block 21 des Treibmaterials, der wie der Block 6 in Fig. 5 eine Ausnehmung 22 aufweist und bei Verwendung einer Zuglasche 13 geteilt ist. Der Block 21 wird zweckmäßigerweise erst nach dem Einschweißen der Wand 20 in den Pumpteil 18 eingesetzt. Dies ist möglich, weil der Pumpteil 18 vor dem Herstellen der Schweißnaht 19 seitlich offen ist.FIG. 10 shows the block 21 of the propellant material to be inserted into the pump part 18, which, like the block 6 in FIG. 5, has a recess 22 and is divided when a pull tab 13 is used. The block 21 is expediently only after the wall 20 has been welded in the pump part 18 used. This is possible because the pump part 18 is laterally open before the weld 19 is produced.
In Fig. 11 ist gezeigt, daß die Wand 20 aus zwei an einer Längsnaht durch eine Schweißnaht 20a miteinander verbundenen Folienstreifen besteht. Längs der Schweißnaht 24 ist die Wand 20 mit den Deckhäu¬ ten 17a und 17b verbunden. An dieser Schweißnaht 24 sind beim Schweißvorgang innen die Ränder des Werkzeugs 25 positioniert.In Fig. 11 it is shown that the wall 20 consists of two film strips connected to each other on a longitudinal seam by a weld seam 20a. Along the weld seam 24, the wall 20 is connected to the cover skins 17a and 17b. The edges of the tool 25 are positioned on the inside of this weld seam 24 during the welding process.
Aus Fig. 12 ist zusätzlich zu ersehen, daß die Breite der die Wand 20 bildenden Folienstreifen in dem Übergangsbereich 26 zum von der Schweißnaht 19 definierten Rand der Luftmatratze abnimmt, was dem Abnehmen der Höhe der Luftmatratze in aufgepumptem Zustand ent¬ spricht. In diesem Bereich haben die Folienstreifen eine Soll-Dehnstelle 27 in Form eines kurzen Einschnitts mit kleiner Bohrung, um ein Ein¬ reißen der sehr dünnen Folienstreifen zu verhindern.It can additionally be seen from FIG. 12 that the width of the film strips forming the wall 20 decreases in the transition region 26 to the edge of the air mattress defined by the weld seam 19, which corresponds to the decrease in the height of the air mattress in the inflated state. In this area, the film strips have a desired expansion point 27 in the form of a short incision with a small bore in order to prevent the very thin film strips from tearing.
Die freien Enden der Folienstreifen werden mittels der Schweißnaht 19 miteinander verschweißt. An dieser Stelle liegen bei der Herstellung der Schweißnaht 19 also vier Folien aufeinander, nämlich die Deckhäute 17a und 17b sowie die die Wand 20 bildenden Folienstreifen.The free ends of the film strips are welded to one another by means of the weld seam 19. At this point, four foils lie on top of one another during the production of the weld seam 19, namely the cover skins 17a and 17b and the foil strips forming the wall 20.
Durch den Abstand 28 zwischen Schweißnaht 24 und Schweißnaht 20a wird die Höhe der aufgepumpten Luftmatratze bestimmt, denn beim Aufpumpen werden die Folienstreifen ausgerichtet, und der zweifache Abstand 28 entspricht dann dem Abstand der Deckhäute 17a und 17b. Durch Variierung des Abstandes 28 kann also die Höhe der aufgepump¬ ten Matratze bestimmt werden. Aus Fig. 12 geht ebenso wie aus Fig. 13 hervor, daß ein Ende einer Zuglasche 30 durch die Schweißnaht 20a an der Pumpteilwand 20 festge¬ legt wird.The height 28 of the inflated air mattress is determined by the distance 28 between weld seam 24 and weld seam 20a, because when inflating the film strips are aligned, and twice the distance 28 then corresponds to the distance between the cover skins 17a and 17b. The height of the inflated mattress can thus be determined by varying the distance 28. From FIG. 12 as well as from FIG. 13 it can be seen that one end of a pull tab 30 is fixed to the pump part wall 20 by the weld seam 20a.
In Fig. 13 ist durch die Pfeile 33 dargestellt, in welcher Weise das Werkzeug zwischen die Folienstreifen der Wand 20 eingebracht und nach dem Einschweißen der Wand 20 zwischen die Deckhäute 17a und 17b wieder entfernt wird. In FIG. 13, the arrows 33 show the manner in which the tool is inserted between the film strips of the wall 20 and is removed again after the wall 20 has been welded in between the cover skins 17a and 17b.

Claims

- 10 -Patentansprüche - 10 patent claims
Verfahren zum Herstellen einer Luftmatratze, die folgende Merkmale aufweist:Method for manufacturing an air mattress, which has the following features:
die Luftmatratze hat einen als Pumpe wirkenden Teil und einen aufzupumpenden Teil; der Pumpteil weist eine verschließbare Einlaßöffnung auf und ist über ein Einweg-Auslaßventil an den aufzupumpenden Teil angeschlossen; im Pumpteil ist ein Treibmaterial untergebracht; in der den Pumpteil vom aufzupumpenden Teil trennenden Wand ist eine kleine Öffnung für die geringe Rückströmung der Luft von dem aufzupumpenden Teil in dem Pumpteil unterge- bracht: in dem aufzupumpenden Teil ist eine verschließbare Auslaßöff¬ nung angeordnet;the air mattress has a part acting as a pump and a part to be inflated; the pump part has a closable inlet opening and is connected to the part to be inflated via a one-way outlet valve; a propellant is housed in the pump section; In the wall separating the pumping part from the part to be inflated, a small opening for the low backflow of air from the part to be inflated is accommodated in the pumping part: a closable outlet opening is arranged in the part to be inflated;
g e k e n n z e i c h n e t d u r c h folgende Merkmale:g e k e n n z e i c h n e t d u r c h the following features:
zwischen einer oberen und einer unteren ebenen Platte (29) einer Hochfrequenzschweißmaschine werden die obere Deckhaut (la, 17a) und die untere Deckhaut (lb, 17b), beide aus thermo¬ plastischem Material bestehend, der Luftmatratze eingebracht; zwischen die obere Deckhaut ( la. 17a) und die untere Deckhautthe upper cover skin (la, 17a) and the lower cover skin (lb, 17b), both consisting of thermoplastic material, of the air mattress are introduced between an upper and a lower flat plate (29) of a high-frequency welding machine; between the upper cover skin (la.17a) and the lower cover skin
(lb, 17b) wird ein metallisches Werkzeug (12, 25) in Form einer senkrecht zur Fläche der Luftmatratze (1) verlaufenden Stegs eingebracht, wobei der obere und der untere Rand dieses Werkzeugs (12, 25) vom Rand der ebenfalls aus thermoplasti¬ schem Material bestehenden Wand (4, 20) des Pumpteils (2, 18) s überdeckt werden; unter Zusammendrücken der Platten (29) und unter deren Anschluß an eine Hochfrequenzquelle wird die Wand (4, 20) oben und unten mit der oberen Deckhaut (la, 17a) bzw. der unteren Deckhaut (lb, 17b) verschweißt; 0 nach dem Verschweißen wird das Werkzeug (12, 25) entfernt; schließlich wird die Luftmatratze (1) an ihren Rändern ver¬ schlossen.(lb, 17b) becomes a metallic tool (12, 25) in shape a web running perpendicular to the surface of the air mattress (1) is inserted, the upper and the lower edge of this tool (12, 25) from the edge of the wall (4, 20) of the pump part (2, 18) also made of thermoplastic material s are covered; by compressing the plates (29) and connecting them to a high-frequency source, the wall (4, 20) is welded at the top and bottom to the upper cover skin (la, 17a) and the lower cover skin (lb, 17b); 0 after welding, the tool (12, 25) is removed; finally, the air mattress (1) is closed at its edges.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein aus 5 Messing bestehendes Werkzeug (12, 25) verwendet wird.2. The method according to claim 1, characterized in that a tool consisting of 5 brass (12, 25) is used.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Pumpteil (2) innerhalb der Luftmatratze angeordnet ist und daß das im Prinzip rahmenförmige Werkzeug (12) längs einer lotrechten 0 Ebene teilbar ist.3. The method according to claim 1 or 2, characterized in that the pump part (2) is arranged within the air mattress and that the in principle frame-shaped tool (12) is divisible along a vertical 0 plane.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die um¬ laufende Wand (4) zumindest an zwei einander gegenüberliegenden Seiten Steglaschen (5) aufweist, die durch Schlitze (15) in dem 5 Werkzeug (12) hindurchgesteckt werden und in diagonaler Richtung mit der oberen Deckhaut (la) bzw. mit der unteren Deckhaut (lb) verbunden werden.4. The method according to claim 3, characterized in that the circumferential wall (4) has at least on two mutually opposite sides web tabs (5) which are inserted through slots (15) in the 5 tool (12) and in the diagonal direction to be connected to the upper cover skin (la) or to the lower cover skin (lb).
5. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß ein 0 mit einer Seite der Wand (4) Verbundes Folienventil (10) durch eine Öffnung (16) in einer Seitenwand des Werkzeugs (12) hindurchge¬ steckt wird.5. The method according to claim 3 or 4, characterized in that a 0 with one side of the wall (4) composite film valve (10) by a Opening (16) in a side wall of the tool (12) is inserted.
6. Verfahren nach einem der Ansprüche 3 bis 5, dadurch gekennzeich- net, daß bei Verwendung eines Block (6) als Treibmaterial dieser6. The method according to any one of claims 3 to 5, characterized in that when a block (6) is used as the propellant, this
Block vor dem Einschweißen der Wand (4) eingesetzt wird.Block is inserted before welding the wall (4).
7. Verfahren nach einem der Ansprüche 3 bis 5, dadurch gekennzeich¬ net, daß das Treibmaterial in Form von kleinstückigem Material oder in Form von einen Block bildenden Schichten durch die Ein¬ laßöffnung (9) in den Pumpteil (2) eingebracht wird.7. The method according to any one of claims 3 to 5, characterized gekennzeich¬ net that the propellant in the form of small-sized material or in the form of a block-forming layers through the inlet opening (9) in the pump part (2) is introduced.
8. Verfahren nach einem der Ansprüche 3 bis 7, dadurch gekennzeich¬ net, daß der Randabschluß der Luftmatratze (1) durch eine zwischen die Ränder der oberen Deckhaut (la) und der unteren Deckhaut8. The method according to any one of claims 3 to 7, characterized gekennzeich¬ net that the edge closure of the air mattress (1) by a between the edges of the upper cover skin (la) and the lower cover skin
(lb) eingeschweißte Seitenwand (3) erfolgt.(lb) welded side wall (3).
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß durch die umlaufende Randschweißnaht (3a) zugleich die Befestigung der freien Ränder von Steglaschen (5) erfolgt.9. The method according to claim 8, characterized in that the peripheral edge weld (3a) at the same time the attachment of the free edges of web brackets (5).
10. Verfahren nach einem der Ansprüche 4 bis 9, dadurch gekennzeich¬ net, daß die gegen das Innere der Luftmatratze (1) gerichteten Steglaschen (5) durch ein besonderes, gegebenenfalls mit dem Werk- zeug (12) Verbundes Zusatzwerkzeug mit der oberen (la) und der unteren Deckhaut (lb) zusammen mit dem Einschweißen der Wand (4) verschweißt werden.10. The method according to any one of claims 4 to 9, characterized gekennzeich¬ net that the web brackets (5) directed against the interior of the air mattress (1) by a special, optionally with the tool (12) composite additional tool with the upper ( la) and the lower cover skin (lb) are welded together with the welding of the wall (4).
11. Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekenn- zeichnet, daß gegenüberliegende Abschnitte der Wand (4) mitein- ander durch eine Zuglasche (30) verbunden werden, welche den gegenseitigen Abstand dieser Abschnitte festlegt.11. The method according to any one of claims 1 to 10, characterized in that opposite sections of the wall (4) mitein- are connected by a pull tab (30) which defines the mutual distance between these sections.
12. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Pumpteil (18) in einer Ecke der Luftmatratze (1) angeordnet ist, und daß das Werkzeug (25) zwischen aneinanderstoßenden Rändern der Luftmatratze (1) verläuft.12. The method according to claim 1 or 2, characterized in that the pump part (18) is arranged in a corner of the air mattress (1), and that the tool (25) runs between abutting edges of the air mattress (1).
13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß ein L- förmig ausgebildetes Werkzeug (25) verwendet wird.13. The method according to claim 12, characterized in that an L-shaped tool (25) is used.
14. Verfahren nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß eine der Form des Werkzeugs (25) angepaßte, aus zwei an einem Längsrand durch eine Schweißnaht (20a) miteinander verbundene Folienstreifen bestehende Pumpteilwand (20) eingeschweißt wird.14. The method according to claim 12 or 13, characterized in that one of the shape of the tool (25) adapted, consisting of two on a longitudinal edge by a weld (20a) interconnected film strip wall (20) is welded.
15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß zwischen die Folienstreifen das Folienventil (10) eingeschweißt wird.15. The method according to claim 14, characterized in that the film valve (10) is welded between the film strips.
16. Verfahren nach einem der Ansprüche 12 bis 15, dadurch gekenn¬ zeichnet, daß die Enden der Pumpteilwand (20) durch die die Ränder der oberen und unteren Deckhaut miteinander verbindenden umlaufenden Schweißnaht (19) verschweißt werden.16. The method according to any one of claims 12 to 15, characterized gekenn¬ characterized in that the ends of the pump part wall (20) are welded by the circumferential weld seam (19) connecting the edges of the upper and lower cover skin.
17. Verfahren nach einem der Ansprüche 14 bis 16, dadurch gekenn¬ zeichnet, daß Folienstreifen mit einer gegen die Enden der Pump¬ teilwand (20) abnehmenden Breite verwendet werden.17. The method according to any one of claims 14 to 16, characterized gekenn¬ characterized in that film strips are used with a towards the ends of the pump part wall (20) decreasing width.
18. Verfahren nach einem der Ansprüche 11 bis 17, dadurch gekenn- zeichnet, daß ein Abschnitt der den Pumpteil (18) vom aufzupum- penden Teil trennenden Wand (20) innen mit einer Zuglasche (30) verbunden wird, deren anderes Ende im Rand der Luftmatratze fixiert wird.18. The method according to any one of claims 11 to 17, characterized in that a portion of the pump part (18) to be pumped up part separating wall (20) is connected on the inside with a pull tab (30), the other end of which is fixed in the edge of the air mattress.
Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß die Verbindung der Zuglasche (30) mit der Wand (20) über die Schweißnaht (20a) erfolgt, welche die die Wand (20) büdenden Folienstreifen miteinander verbindet, und daß die Verbindung der Zuglasche (30) mit dem Rand der Luftmatratze über die Schweiß- naht (19) erfolgt, welche die Deckhäute (17a, 17b) miteinander verbindet. A method according to claim 18, characterized in that the connection of the pull tab (30) to the wall (20) takes place via the weld seam (20a), which connects the film strips which bond the wall (20), and that the pull tab (30 ) with the edge of the air mattress over the weld seam (19) which connects the outer skins (17a, 17b) to one another.
EP94930199A 1994-04-18 1994-10-20 Process for producing an air mattress with a pump part and a part to be inflated Expired - Lifetime EP0756466B1 (en)

Applications Claiming Priority (3)

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DE4413445 1994-04-18
DE4413445A DE4413445C2 (en) 1994-04-18 1994-04-18 Method for producing an air mattress with a part acting as a pump and a part to be inflated by the pump
PCT/EP1994/003451 WO1995028112A1 (en) 1994-04-18 1994-10-20 Process for producing an air mattress with a pump part and a part to be inflated

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EP0756466A1 true EP0756466A1 (en) 1997-02-05
EP0756466B1 EP0756466B1 (en) 1998-09-16

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EP (1) EP0756466B1 (en)
JP (1) JPH10501427A (en)
KR (1) KR970702003A (en)
AT (1) ATE171050T1 (en)
AU (1) AU7938894A (en)
CA (1) CA2188265A1 (en)
DE (2) DE4413445C2 (en)
ES (1) ES2124432T3 (en)
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Publication number Publication date
JPH10501427A (en) 1998-02-10
CA2188265A1 (en) 1995-10-26
EP0756466B1 (en) 1998-09-16
WO1995028112A1 (en) 1995-10-26
DE59406944D1 (en) 1998-10-22
KR970702003A (en) 1997-05-13
AU7938894A (en) 1995-11-10
DE4413445C2 (en) 1996-02-01
ATE171050T1 (en) 1998-10-15
GB2288567A (en) 1995-10-25
GB2288567B (en) 1997-11-12
GB9421865D0 (en) 1994-12-14
ES2124432T3 (en) 1999-02-01
US5746873A (en) 1998-05-05
DE4413445A1 (en) 1995-10-19

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