To provide a rotary pump having a seal part which can secure favorable seal performance and favorable assembling performance.SOLUTION: A rotary pump 100 has an accommodation recess 105c extending along an axial line direction of an outer rotor 102 at a peripheral wall face 105a1 for partitioning a rotor chamber 101a of a casing 101. A rubber member 107a and a resin member 107b constituting a seal part 107 are integrally accommodated in the accommodation recess 105c. The rubber member 107a has a length which is decided on the basis of a tooth width along the axial line direction of the outer rotor 102 at an inner tooth part 102a, and has concave parts 107a2 which adjoin spherical parts 107a1 in a state of being accommodated in a plurality of the spherical parts 107a1 and the accommodation recess 105c which are continuously formed along a longitudinal direction, and is concaved in a direction different from the longitudinal direction.SELECTED DRAWING: Figure 3
【課題】良好なシール性及び良好な組み付け性を確保可能なシール部を有する回転式ポンプを提供すること。【解決手段】回転式ポンプ100は、ケーシング101のロータ室101aを区画する周壁面105a1にアウターロータ102の軸線方向に沿って延設された収容凹部105cを有している。収容凹部105cには、シール部107を構成するゴム部材107a及び樹脂部材107bが一体に収容される。ゴム部材107aは、アウターロータ102の内歯部102aにおける軸線方向に沿った歯幅に基づいて決定される長さを有し、且つ、長さ方向に沿って連設された複数の球状部107a1及び収容凹部105cに収容された状態で球状部107a1に隣接して長さ方向とは異なる方向に窪む窪み部107a2を有する。【選択図】図3
ROTARY PUMP AND BRAKE DEVICE OF VEHICLE
回転式ポンプ及び車両のブレーキ装置
2020-03-05
Patent
Electronic Resource
Japanese
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