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1. WO2010001764 - VARIABLE DISPLACEMENT GEAR PUMP

Publication Number WO/2010/001764
Publication Date 07.01.2010
International Application No. PCT/JP2009/061416
International Filing Date 23.06.2009
IPC
F04C 14/20 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
14Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
18characterised by varying the volume of the working chamber
20by changing the form of the inner or outer contour of the working chamber
F04C 2/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
14with toothed rotary pistons
18with similar tooth forms
CPC
F04C 14/185
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
14Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
18characterised by varying the volume of the working chamber
185by varying the useful pumping length of the cooperating members in the axial direction
F04C 2/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
14with toothed rotary pistons
18with similar tooth forms
Applicants
  • 株式会社小松製作所 KOMATSU LTD. [JP]/[JP] (AllExceptUS)
  • 東泉 雅大 TOUSEN, Masahiro [JP]/[JP] (UsOnly)
  • 菅 佳通 SUGA, Yoshimichi [JP]/[JP] (UsOnly)
  • 飯谷 英史 IITANI, Hideshi [JP]/[JP] (UsOnly)
Inventors
  • 東泉 雅大 TOUSEN, Masahiro
  • 菅 佳通 SUGA, Yoshimichi
  • 飯谷 英史 IITANI, Hideshi
Agents
  • 酒井 宏明 SAKAI, Hiroaki
Priority Data
2008-17468103.07.2008JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) VARIABLE DISPLACEMENT GEAR PUMP
(FR) POMPE À ENGRENAGES ET À DÉPLACEMENT VARIABLE
(JA) 可変容量ギヤポンプ
Abstract
(EN)
A variable displacement gear pump, wherein a pair of gears (20, 30) meshing with each other are mounted inside a casing (10) so as to be rotatable and so as to be slidable axially relative to each other.  When the gears (20, 30) are rotated, the gear pump discharges an amount of liquid corresponding to the meshing length along which the gears mesh with each other.  The gear pump is provided with a blocking member (40) which, when the gear (30) is moved in the direction in which the meshing length decreases, prevents gear grooves of the gear (30) from communicating with adjacent gear grooves of the other gear (20).
(FR)
L'invention porte sur une pompe à engrenages et à déplacement variable, dans laquelle une paire d'engrenages (20, 30) s'engrenant l'un avec l'autre est montée à l'intérieur d'un boîtier (10) de façon à pouvoir tourner et de façon à pouvoir coulisser axialement l'un par rapport à l'autre. Lorsque les engrenages (20, 30) sont amenés à tourner, la pompe à engrenages décharge une quantité de liquide correspondant à la longueur d'engrènement le long de laquelle les engrenages s'engrènent l'un avec l'autre. La pompe à engrenages comporte un élément de blocage (40) qui, lorsque l'engrenage (30) est amené à se déplacer dans la direction dans laquelle la longueur d'engrènement diminue, empêche les rainures d'engrenage de l'engrenage (30) de communiquer avec des rainures d'engrenage adjacentes de l'autre engrenage (20).
(JA)
 ケーシング10の内部に互いに噛み合う一対のギヤ20,30を回転可能、かつ相対的に軸方向にスライド可能に配設し、ギヤ20,30を回転させた場合に互いの噛み合い長さに応じた量の液体を吐出する可変容量ギヤポンプにおいて、互いの噛み合い長さを減少させる方向にギヤ30を移動させた場合に一方のギヤ30の歯溝において他方のギヤ20の隣接する歯溝が連通するのを阻止する遮断部材40を設けた。
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