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gear pump unit

A technology of gear pumps and gears, applied to pumps, pump components, rotary piston pumps, etc., can solve problems such as insufficient pump device miniaturization

Active Publication Date: 2016-12-07
ADVICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is insufficient for downsizing the pump device due to the need for arrangement space of the leaf spring and the like.

Method used

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  • gear pump unit
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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0026] Exemplary embodiments of the present disclosure will now be described below with reference to the accompanying drawings. In each of the following embodiments, the same parts or parts equivalent to each other will be described with the same reference numerals.

[0027] (First Embodiment) Hereinafter, the present disclosure will be described based on the embodiments shown in the drawings. figure 1 is a schematic diagram showing a brake line of a vehicle brake system to which a gear pump device according to an embodiment of the present disclosure is applied. In the following, based on figure 1 Describe the basic structure of the vehicle braking system. Here, an example will be described in which the vehicle brake system according to the present disclosure is applied to a vehicle having a hydraulic circuit with front and rear lines.

[0028] Such as figure 1 As shown in , when the driver depresses the brake pedal 11 as a brake operating member, the depressing force is m...

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PUM

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Abstract

The gear pump device of the present disclosure includes: a gear pump, a housing, and a sealing mechanism, wherein the sealing mechanism includes: an annular rubber member, an outer member, and an inner member having an outer peripheral wall on which the annular rubber member is mounted , the inner member is fitted to the inner side of the outer member and is in contact with the inner wall surface of the housing, wherein the outer peripheral wall of the inner member is provided with a flange portion passed by the discharge pressure based on the gear pump The contact pressure of the annular rubber member generates an urging force of the inner member toward the inner wall surface, and the flange portion forms a pressure receiving surface to increase as the contact pressure of the annular rubber member increases according to the discharge pressure. The propulsion.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. 2012-163894 filed on Jul. 24, 2012, the entire subject matter of which is incorporated herein by reference. technical field [0003] The present disclosure relates to a gear pump device, such as a trochoidal pump or the like for pumping fluid through the meshing of gears, suitable for use in, for example, a vehicle braking system. Background technique [0004] Currently, when the gear pump is unitized and then the pump body is fastened to the casing (casing) accordingly, since the axial force changes in the case where the axial force is generated by screw fastening to fill the gap between members, Leaf springs are placed at the base or end of the pump body to dampen axial force variations. However, since an arrangement space for the leaf spring and the like are required, it is insufficient to realize miniaturization of the pump device. [0005] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C2/10F04C15/00
CPCF04C2/10F04C2/18F04C15/0026F04C18/08
Inventor 永沼贵宽中村祐树
Owner ADVICS CO LTD