CH247148A - Use in piston air pumps, especially in bicycle air pumps. - Google Patents

Use in piston air pumps, especially in bicycle air pumps.

Info

Publication number
CH247148A
CH247148A CH247148DA CH247148A CH 247148 A CH247148 A CH 247148A CH 247148D A CH247148D A CH 247148DA CH 247148 A CH247148 A CH 247148A
Authority
CH
Switzerland
Prior art keywords
air pumps
piston
sleeve
air
bicycle
Prior art date
Application number
Other languages
German (de)
Inventor
Kreis Hans
Original Assignee
Kreis Hans
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kreis Hans filed Critical Kreis Hans
Publication of CH247148A publication Critical patent/CH247148A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B33/00—Pumps actuated by muscle power, e.g. for inflating
    • F04B33/005—Pumps actuated by muscle power, e.g. for inflating specially adapted for inflating tyres of non-motorised vehicles, e.g. cycles, tricycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

  

      Einsatz    in     Kolbenluftpumpen,        insbesondere    in     Veloluftpumpen.       In den Kolbenluftpumpen, insbesondere  in den     Veloluftpumpen,    besteht der Kolben  aus     einer    Scheibe, an welcher eine     Leder-          manschette,    die     napfförmig    ausgebildet, be  festigt     ist.    Diese     Ledermanschette    dient  gleichzeitig     als    Abdichtung und als Luft  ventil. Wird der Kolben in der Pumpe nach  auswärts bewegt, so wird in derselben ein  luftverdünnter Raum erzeugt.

   Der Atmo  sphärendruck drückt nun die Luft zwischen  der Ledermanschette und dem Pumpenzylin  der hindurch ins Innere der Pumpe. Sobald  der Kolben zurückgestossen wird, so wird die  Luft     in    der Pumpe komprimiert. Der Luft  druck drückt dabei den Rand der Leder  manschette an die Wandung des Zylinders  der Pumpe und dichtet so den Kolben ab. Da  nun die Ledermanschette beim Gebrauche  nach und nach ihre Elastizität verliert, wird  dadurch die     Leistung    der Pumpe reduziert.  



  Dieser Nachteil wird durch vorliegende  Erfindung beseitigt, indem in die Leder  manschette ein elastischer Einsatz eingesetzt  ist, welcher den Rand der Manschette stets  federnd an die     Wandtmg    des Zylinders der       Luftpumpe    drückt. Dadurch wird das rich  tige Funktionieren der Ledermanschette ge  sichert, auch wenn dieselbe ihre Elastizität  verloren hat. Als Material für den     Einsatz     kann z. B. Kork, Gummi, Stahl, Hartmessing  usw. verwendet werden.  



  In der beiliegenden     Zeichnung    ist der Er-         findungsgegenstand    in einer beispielsweisen  Ausführungsform dargestellt,     und    zwar zeigt:       Fig.    1 einen Längsschnitt durch die     Luft-          Pumpe,          Fig.    2 den Grundriss und       Fig.    3 einen     Schnitt    durch den Einsatz  der Luftpumpe.  



  Der Zylinder 1 der Luftpumpe hat unten  eine mit     Gewinde    versehene Bohrung 2 zum  Anschrauben     eines    Rohres oder eines Ventils.  In diesem Pumpenzylinder ist die Kolben  stange 3 mit dem Einsatz 6, der als Man  schette z. B.     aus    Stahl ausgebildet ist, ange  ordnet.     Über    den Einsatz 6 ist die Leder  manschette 5 gestülpt und mit der Schraube  4 befestigt. In der     Stahlmanschette    sind die  Aussparungen 7 ausgestanzt, derart, dass  diese zahnradartige Form erhält, was die  federnde Wirkung erhöht und den Rand der       darübergestülpten    Ledermanschette stets nach       aussen    drückt.  



  Als Einsatz kann auch ein federnder       Ringaus    Stahl dienen oder eine Scheibe     aus     Kork oder ein federnder Ring aus Holz.



      Use in piston air pumps, especially in bicycle air pumps. In the piston air pumps, in particular in the bicycle air pumps, the piston consists of a disk to which a leather sleeve, which is cup-shaped, is fastened. This leather sleeve serves as a seal and as an air valve. If the piston in the pump is moved outwards, an air-diluted space is created in it.

   The atmospheric pressure now pushes the air between the leather sleeve and the pump cylinder through into the interior of the pump. As soon as the piston is pushed back, the air in the pump is compressed. The air pressure presses the edge of the leather sleeve against the wall of the cylinder of the pump and thus seals the piston. Since the leather cuff gradually loses its elasticity during use, this reduces the performance of the pump.



  This disadvantage is eliminated by the present invention in that an elastic insert is inserted into the leather cuff, which always presses the edge of the cuff resiliently against the wall of the cylinder of the air pump. This ensures the correct functioning of the leather cuff, even if it has lost its elasticity. As a material for use, for. B. cork, rubber, steel, hard brass, etc. can be used.



  The subject matter of the invention is shown in an exemplary embodiment in the accompanying drawing, specifically showing: FIG. 1 a longitudinal section through the air pump, FIG. 2 the plan view and FIG. 3 a section through the use of the air pump.



  The cylinder 1 of the air pump has a threaded hole 2 at the bottom for screwing on a pipe or valve. In this pump cylinder, the piston is rod 3 with the insert 6, the cuff as a man z. B. is made of steel, is arranged. The leather sleeve 5 is slipped over the insert 6 and fastened with the screw 4. The recesses 7 are punched out in the steel sleeve in such a way that they are given a gear-like shape, which increases the resilient effect and always presses the edge of the leather sleeve placed over it outwards.



  A resilient ring made of steel or a disc made of cork or a resilient ring made of wood can also serve as an insert.

Claims (1)

PATENTANSPRUCH: Einsatz in Kolbenluftpumpen, insbeson dere in Veloluftpumpen, dadurch gekennzeich net, dass der Einsatz aus elastischem Mate rial besteht und so geformt ist, dass er stän dig den Rand der Ledermanschette des Kol bens federnd gegen die Zylinderwandung der Luftpumpe drückt. UNTEI%ANSPP,ÜCHE 1. Einsatz nach Patentanspruch; .dadurch gekennzeichnet, dass derselbe als Metall- manschette ausgebildet ist, die längs des Umfanges Aussparungen aufweist, welche die federnde Wirkung der Manschette er höhen. PATENT CLAIM: Use in piston air pumps, in particular in bicycle air pumps, characterized in that the insert is made of elastic material and is shaped so that it constantly presses the edge of the leather sleeve of the piston against the cylinder wall of the air pump. UNTEI% ANSPP, ÜCHE 1. Use according to patent claim; . Characterized in that the same is designed as a metal sleeve which has recesses along the circumference, which heighten the resilient effect of the sleeve. 2. Pinsatz nach Patentanspruch, dadurch gekennzeichnet, dass derselbe aus einem fe dernden Metallring besteht. 3. Einsatz nach Patentanspruch, dadurch gekennzeichnet, dass derselbe ans einem fe dernden Holzring besteht. 2. Set of pins according to claim, characterized in that the same consists of a fe-reducing metal ring. 3. Use according to claim, characterized in that the same consists of a fe-reducing wooden ring.
CH247148D 1944-06-17 1944-06-17 Use in piston air pumps, especially in bicycle air pumps. CH247148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH247148T 1944-06-17

Publications (1)

Publication Number Publication Date
CH247148A true CH247148A (en) 1947-02-15

Family

ID=4466027

Family Applications (1)

Application Number Title Priority Date Filing Date
CH247148D CH247148A (en) 1944-06-17 1944-06-17 Use in piston air pumps, especially in bicycle air pumps.

Country Status (1)

Country Link
CH (1) CH247148A (en)

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