EP0953763B1 - Pompe manuelle - Google Patents

Pompe manuelle Download PDF

Info

Publication number
EP0953763B1
EP0953763B1 EP19990108348 EP99108348A EP0953763B1 EP 0953763 B1 EP0953763 B1 EP 0953763B1 EP 19990108348 EP19990108348 EP 19990108348 EP 99108348 A EP99108348 A EP 99108348A EP 0953763 B1 EP0953763 B1 EP 0953763B1
Authority
EP
European Patent Office
Prior art keywords
pump
cam
pump piston
piston
cylinder
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.)
Expired - Lifetime
Application number
EP19990108348
Other languages
German (de)
English (en)
Other versions
EP0953763A3 (fr
EP0953763A2 (fr
Inventor
Lothar Dr. Haselmann
Ulrich Schulz
Georg Strommer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weber Hydraulik GmbH Germany
Original Assignee
Weber Hydraulik GmbH Germany
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 Weber Hydraulik GmbH Germany filed Critical Weber Hydraulik GmbH Germany
Publication of EP0953763A2 publication Critical patent/EP0953763A2/fr
Publication of EP0953763A3 publication Critical patent/EP0953763A3/fr
Application granted granted Critical
Publication of EP0953763B1 publication Critical patent/EP0953763B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation

Definitions

  • the present invention relates to a hand pump.
  • a hydraulic pump known (DE-AS 10 99 356), which consists of a pump cylinder with an actuated by a pump lever piston rod and piston on the one hand and with an associated container for the pressure medium on the other hand, wherein in the space above the oil reservoir, a vent valve is provided and on the pump lever, a cam is arranged, through which the vent valve is opened at each pump stroke.
  • piston pump for manual operation (DE-PS 18 45 696), in which a made of plastic, consisting of two flanged cylinder parts cylinder a piston made of plastic is arranged, which carries a rack made of the same material , in which engages a gear segment.
  • a lever-operated piston pump for draining liquid containers known (DE-AS 12 54 966), wherein the lever mechanism of the piston pump, a spring member is associated, which surrounds the piston from the lifting position to the liquid blocking position when relieving the hand lever.
  • a non-generic hydraulic hand pump is known (DE 94 14 875 U1), wherein the pump piston is moved axially upon actuation of the pump lever with respect to the pump cylinder, wherein the pumping movement of the pump lever via a shaft on a lever with a transverse to the axial direction Tang is transferred.
  • This engages in a provided at the rear end of the pump piston both transversely to the axial direction and to the pin extending laterally open, notch and thus consuming recess, so that the rotational movement of the lever nevertheless a purely linear reciprocating motion of the pump piston-without that this can cause tilting.
  • a joint does not have the pump piston.
  • a disadvantage of this known hand pump is the complicated structure of the connection between the actual pump piston via a separate -gekröpfte- piston rod with the joint on the cam. This multiplicity of components makes the structure of the known hand pump comparatively complicated and, as a result, prone to failure.
  • the invention is therefore an object of the invention to provide a simple and inexpensive to manufacture hand pump available, which is also less prone to failure due to a smaller number of functional parts.
  • a hand pump according to the preamble of claim 1 according to its ken conveyden characteristics thus characterized in that the joint is arranged on the cam associated free end of the integrally and cylindrically shaped pump piston and that the joint between the cam and the pumping head by means of a formed in a bore of the cam and engaging in a bore of the pump piston axis is formed, which is substantially parallel to the axial direction of the shaft.
  • the transmission of the pumping movement from the pumping lever to the cam is provided via the shaft, the cam interacting with the pumping piston of the pumping cylinder.
  • the core of the present invention which can not be foreseen by the person skilled in the art in accordance with the prior art now consists of frictionally engaging the pumping piston at least one joint having an axis to connect with the cam.
  • a pump piston extending for a long time is provided for the pump cylinder without a pump piston rod to be fastened thereto separately and on the cam.
  • the free end of the pump piston is connected via the joint with the cam. It thus eliminates the separate pump piston rod and its attachment to both the pump piston and the cam.
  • the hand pump is not only simple and inexpensive to produce, but has due to the arrangement of the joint for frictional interaction of the pump piston with the cam on a smaller number of functional parts, so that the hand pump according to the present invention is characterized by a significantly reduced susceptibility.
  • FIG. 1 shows a first embodiment of a hand pump according to the present invention is shown in a schematic cross-sectional view.
  • the pump movement is transmitted from a pump lever 10 via a shaft 20 to a cam 30, wherein the cam 30 cooperates with a pump piston 50 of a pump cylinder 60.
  • the pump piston 50 is frictionally connected via a joint 40 designed as an axle with the cam 30.
  • the cam 30 moved by the rotary shaft 20 is provided with the axis 40 substantially parallel to the shaft 20, which engages a bore 510 of the pumping cylinder 60 adapted thereto, so that with an oscillating reciprocating motion of the shaft 20 moving cam 30 and attached thereto in a bore 310 of the cam 30 axis 40 a reciprocating stroke movement of the pump piston 50 of the pumping cylinder 60 is effected.
  • the pump piston 50 fits with great play in the relevant pump cylinder 60, wherein the tightness is effected by two strongly projecting in the radial direction, elastically yielding piston seals 70, 80. These seals 70, 80 allow the pumping piston 50 can perform a slight tilting movement during its stroke due to the non-positive articulation on the axis 40, without at the same time the tightness of the pump piston 50 is impaired in the pumping cylinder 60.
  • an additional return member such as a spring omitted.
  • FIG. 3 shows a second embodiment of a hand pump according to the present invention in one embodiment 4 shows a schematic sectional view of the hand pump from FIG. 3 along the section line IV - IV in FIG. 3.
  • the hand pump according to the second embodiment differs from the hand pump according to the first embodiment shown in Figures 1 and 2 essentially in that the pump cylinder 60 with the pump piston 50 seen from the pump lever 10 is not back-mounted cam 30, but rather the cam 30 is upstream.
  • the solution according to the two embodiments illustrated in FIGS. 1 to 4 has a smaller number of components and as a result is cheaper and also easier to assemble. Also, there is a smaller number of components potentially affecting the function present, especially no rubbing against each other parts as in the prior art, so that there is a maximum of reliability.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Eye Examination Apparatus (AREA)

Claims (6)

  1. Pompe à main, dans laquelle on prévoit la transmission du déplacement de pompe à partir d'un levier de pompe (10) par l'intermédiaire d'un arbre (20) à une came (30), moyennant quoi la came (30) coopère avec un piston de pompe (50) d'un cylindre de pompe (60), moyennant quoi le piston de pompe (50) est relié par conjugaison de forme, par l'intermédiaire d'au moins une articulation (40), à la came (30), moyennant quoi le piston de pompe (50) du cylindre de pompe (60) présente un grand jeu, et moyennant quoi le piston de pompe (50) présente au moins un joint d'étanchéité (70, 80) élastique absorbant ce jeu,
    caractérisée en ce que 1'articùlation (40) est disposée sur l'extrémité libre associée à la came (30) du piston de pompe (50) configuré de manière cylindrique et d'un seul tenant, et en ce que l'articulation est formée entre la came (30) et le piston de pompe (60) à l'aide d'un axe (40) emboîté dans un alésage (310) de la came (30) et s'engrenant dans un alésage (510) du piston de pompe (50), lequel est sensiblement parallèle à la direction axiale de l'arbre (20).
  2. Pompe à main selon la revendication 1, caractérisée en ce que l'axe (40) est configuré sous la forme d'un boulon.
  3. Pompe à main selon l'une quelconque des revendications 1 et 2, caractérisée en ce que le joint d'étanchéité (70, 80) est introduit dans une rainure circulaire (90) du piston de pompe (50).
  4. Pompe à main selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le joint d'étanchéité (70, 80) dépasse ou fait saillie dans la direction radiale.
  5. Pompe à main selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le joint d'étanchéité (70, 80) est disposé sur l'extrémité du piston de pompe (50) opposée à l'extrémité libre du piston de pompe (50).
  6. Pompe à main selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'il est prévu deux joints d'étanchéité (70, 80) circulaires, disposés à une certaine distance l'un de l'autre.
EP19990108348 1998-04-28 1999-04-28 Pompe manuelle Expired - Lifetime EP0953763B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29807533U DE29807533U1 (de) 1998-04-28 1998-04-28 Handpumpe
DE29807533U 1998-04-28

Publications (3)

Publication Number Publication Date
EP0953763A2 EP0953763A2 (fr) 1999-11-03
EP0953763A3 EP0953763A3 (fr) 2000-08-16
EP0953763B1 true EP0953763B1 (fr) 2006-06-21

Family

ID=8056321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990108348 Expired - Lifetime EP0953763B1 (fr) 1998-04-28 1999-04-28 Pompe manuelle

Country Status (2)

Country Link
EP (1) EP0953763B1 (fr)
DE (3) DE29807533U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3121445A1 (fr) 2015-07-22 2017-01-25 Weber-Hydraulik GmbH Presse hydraulique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610541A (en) * 1945-11-15 1948-10-18 Messier Aircraft Equipment Ltd Improvements in or relating to variable-stroke pumps
DE812281C (de) * 1949-06-10 1951-08-27 Flensburger Pumpenfabrik Heinr Doppeltwirkende Kolbenpumpe fuer Handantrieb
DE1099356B (de) 1958-10-27 1961-02-09 Metallwaren Und Maschinenfabri Hydraulische Pumpe, vornehmlich fuer Kraftfahrzeugwerkstaetten
GB926961A (en) * 1959-07-10 1963-05-22 Pass & Co Ltd E Improvements in or relating to hydraulic pumps
DE1845696U (de) 1961-09-28 1962-01-25 Georg Horndasch Kolbenpumpe fuer handbetrieb.
DE1254966B (de) 1964-06-16 1967-11-23 Eugen Schlenker & Co O H G Durch Handhebel zu betaetigende Kolbenpumpe
DE3112733C2 (de) 1981-03-31 1984-02-02 Pierburg Gmbh & Co Kg, 4040 Neuss Pumpe zur Förderung von Gasen oder Flüssigkeiten
DE8127508U1 (de) * 1981-09-19 1982-02-11 Elektro-Thermit Gmbh, 4300 Essen Handbetaetigte hydraulische pumpe
FR2566053A1 (fr) 1983-12-09 1985-12-20 Albin Alexis Pompe hydraulique manuelle a debit et couple d'entree variables, assujetties a l'effort de l'utilisateur
DE9414875U1 (de) * 1994-09-13 1996-01-25 Aldinger, Heinz, Dipl.-Ing. (FH), 74363 Güglingen Hydraulische Handpumpe, insbesondere zum Kippen von Fahrzeugkabinen

Also Published As

Publication number Publication date
DE59913577D1 (de) 2006-08-03
DE29807533U1 (de) 1998-09-24
EP0953763A3 (fr) 2000-08-16
EP0953763A2 (fr) 1999-11-03
DE29906713U1 (de) 1999-10-28

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