Electric Pump Mounting Plate-Shaped Elastic Member Vibration

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Solution Overview

Problem

Existing electric pump mounting structures face challenges with vibration reduction, requiring large dies for molding elastic members, increased component count, and degraded workability due to complex mounting processes.

Innovation Solution

A plate-shaped elastic member is wound around the pump main body with locking portions and target portions on both ends and the outer circumference, allowing for stable fixation and reduced dead space in die molding, improving workability and vibration reduction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a cylindrical rubber is molded by using a die, then vibration reduction is achieved, but a large occupation region is necessary for the die due to dead space in the inner circumference

Engineering Contradiction:

ImprovevibrationVSAvoiddie occupation region

Core Design Contradiction:

Object-affected harmful factorsVSArea of stationary object

Solution Approach 1:

The elastic member is divided into a first elastic member and a second elastic member, each with distinct functions. The first elastic member focuses on vibration reduction with a simplified structure that eliminates dead space, while the second elastic member handles mounting. This segmentation allows each component to be optimized independently, reducing the overall die occupation region.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The mounting function is extracted from the vibration reduction function. The second elastic member is specifically designed for mounting with protruding portions that engage with holes in the mounting member, while the first elastic member is dedicated to vibration reduction. This extraction allows the first elastic member to have a compact design without unnecessary structural extensions.

Inventive Principle:

Principle #2Taking out (Extraction)

2Object-affected harmful factors

If a cylindrical rubber is mounted on the hydraulic pump, then vibration is reduced, but it is necessary to stretch the entire cylindrical rubber outward radially such that the pump passes through the inner circumference region

Engineering Contradiction:

ImprovevibrationVSAvoidmounting difficulty

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The elastic member is segmented into two distinct components with specialized functions. The first elastic member is designed solely for vibration reduction with a structure that fits tightly around the pump body without requiring radial stretching. The second elastic member handles the mounting function with features like protruding portions that engage with mounting member holes, eliminating the need to stretch the entire elastic member radially during assembly.

Inventive Principle:

Principle #1Segmentation

3Object-affected harmful factors

If two elastic members are mounted on the electric pump for vibration reduction, then vibration is reduced, but the number of components increases and workability is degraded

Engineering Contradiction:

ImprovevibrationVSAvoidworkability

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The first elastic member and second elastic member are merged into an integrated assembly where the second elastic member is positioned between the first elastic member and the mounting member. This merging allows the mounting operation to secure both components simultaneously, improving workability despite having two elastic members for vibration reduction.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The second elastic member serves multiple functions: it provides structural support during mounting, engages with the mounting member through protruding portions, and works in conjunction with the first elastic member for vibration reduction. This multi-functionality reduces the need for separate components and simplifies the overall assembly process.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution enables efficient vibration reduction, improved workability, and reduced manufacturing complexity by using a plate-shaped elastic member with specific locking mechanisms, allowing for easier mounting and smaller die requirements.

Implementation Method 1

a plate-shaped elastic member that is wound around an outer circumference of the pump main body

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the elastic member is provided with a pair of first locking portions on both end portions in the longitudinal direction, and the outer circumference of the pump main body is provided with a pair of first locking target portions that are locked to the pair of the first locking portions

Methodology Applied

Scientific EffectVibration damping: Damping

Data Source

PatentUS10533579B2Electric pump and mounting structure of electric pump

Publication Date: 2020.01.14 AISIN SEIKI KK

AI summary

An electric pump includes: a pump main body that accommodates a pump unit and a motor; and a plate-shaped elastic member that is wound around an outer circumference of the pump main body such that a longitudinal direction of the elastic member extends along a circumferential direction of the pump main body, in which the elastic member is provided with a pair of first locking portions on both end portions in the longitudinal direction, and the outer circumference of the pump main body is provided with a pair of first locking target portions that are locked to the first locking portions.