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Vane pump

A technology for vane pumps and pump casings, applied to pumps, pump components, rotary piston pumps, etc., can solve problems such as deterioration of automatic installation workability, and achieve the effect of easy automatic installation and deformation prevention

Inactive Publication Date: 2008-04-09
UNISIA JKC STEERING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, when the interconnected rotors are conveyed to the automatic mounting device by the parts feeder, the workability of the automatic mounting is deteriorated.

Method used

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  • Vane pump
  • Vane pump
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Next, embodiments of the vane pump of the present invention will be described in detail with reference to the drawings.

[0025] The vane pump is a pump suitable as a supply source of oil pressure for a hydraulic machine such as a power steering device of a vehicle. like figure 1 As shown, it is mainly composed of a pump casing 1 fixed to the cylinder block of an internal combustion engine with screws, a pump main body 2 arranged in the pump casing 1, and a drive shaft 3 inserted through the pump casing 1 at one end side. .

[0026] The pump housing 1 such as figure 1 and figure 2 As shown, it consists of a block-shaped pump body 6 with a suction passage 4 and a discharge passage 5 and a pump cover 7 combined with the pump body 6, and a space for placing the pump body 2 is provided between the pump body 6 and the pump cover 7. department.

[0027] The pump main body 2 is as Figure 1 ~ Figure 3 As shown, it includes a stator 8 accommodated inside the pump cover 7...

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PUM

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Abstract

A vane pump comprises a vane rotor (9) rotatably received in a cam ring (8), and vanes (16) held for projection and retraction in a plurality of slots (15) radially formed in the outer periphery of the vane rotor substantially at circumferentially equispaced intervals. The circumferential length (L) of a material-removed section (18) between two adjacent slot forming sections (17, 17) is set greater than the circumferential length (L1) of each slot forming section so that even if the material-removed sections and the slot forming sections of adjacent vane rotors fit together on a parts feeder, such fitting is not a tight fit but a loose fit. This prevents rotors being fed on the parts feeder from connecting to each other, thus preventing the efficiency of automatic assembly operation from lowering.

Description

technical field [0001] The present invention relates to a vane pump used as an oil pressure supply source of a power steering device of a vehicle. Background technique [0002] Various products have been provided as vane pumps for vehicles, and one of them is known as the invention described in Japanese Patent Application Laid-Open No. 9-324767 issued by the Japanese Patent Office. [0003] In this vane pump, a stator is accommodated inside a pump casing, and a vane rotor is rotatably provided in the stator to form a pressure chamber between an outer peripheral surface and an inner peripheral surface of the stator. [0004] On the outer peripheral portion of the vane rotor, a plurality of slits are formed radially at positions at equal intervals in the circumferential direction, and thin-plate-shaped vanes are supported in each of the slits so that they can move freely in and out toward the inner peripheral surface of the stator. . The rotor is connected to a drive shaft i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C2/344F04C15/00F01C21/08
CPCF01C21/08F04C2/3446F04C2230/60
Inventor 毒嶌正明高桥邦夫
Owner UNISIA JKC STEERING SYST