Motor-Driven Compressor Integrated Support Recess

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing motor-driven compressors for vehicular air conditioners face challenges with vibration reduction and installation ease due to cumbersome mounting processes and increased size, particularly when mounting to vertically extending parts of the vehicle body frame.

Innovation Solution

The design incorporates semi-cylindrical support members with integrated vibration dampers that are mounted to the compressor housing via bolts, allowing for secure attachment to the vehicle frame while minimizing direct contact and maximizing vibration absorption, thus reducing the compressor's size and simplifying installation across various frame orientations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a support with bolt hole is circumferentially welded to the compressor periphery, then the compressor can be mounted to the body frame, but the entire size of the compressor increases

Engineering Contradiction:

Improvemounting capabilityVSAvoidcompressor size

Core Design Contradiction:

Ease of manufactureVSVolume of moving object

Solution Approach 1:

The support member is merged with the housing by providing a recess in the housing that receives the support member, eliminating the need for separate welding operations and reducing overall size while maintaining mounting capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The support member is nested within the housing structure through the recess configuration, where the support member fits into the recess and is secured by the vibration damper, creating a compact integrated assembly

Inventive Principle:

Principle #7Nested doll (Nesting)

2Object-affected harmful factors

If a rubber mount is interposed between the support and body frame, then vibration is reduced, but the mounting process becomes troublesome

Engineering Contradiction:

Improvevibration reductionVSAvoidmounting process

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The vibration damper is merged with the support member as a single integrated component, where the vibration damper is received by the support member and secured together, eliminating the need for separate mounting operations while maintaining vibration reduction functionality

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated support member and vibration damper assembly serves itself by being secured as a unit to the housing through the recess, automatically providing both vibration damping and structural support without requiring separate mounting steps

Inventive Principle:

Principle #25Self-service

3Ease of manufacture

If the support is welded to the compressor periphery, then mounting is enabled, but the compressor requires larger installation space

Engineering Contradiction:

Improvemounting structureVSAvoidinstallation space

Core Design Contradiction:

Ease of manufactureVSArea of stationary object

Solution Approach 1:

The support member is merged into the housing structure through the recess configuration, creating a compact assembly that reduces the overall footprint and installation space requirements while maintaining full mounting functionality

Inventive Principle:

Principle #5Merging (Combining)

4Object-affected harmful factors

If the rubber mount shape is fixed, then vibration damping is provided, but the compressor orientation relative to vehicle body is limited

Engineering Contradiction:

Improvevibration dampingVSAvoidmounting orientation

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The support member configuration with the recess and integrated vibration damper creates a dynamic mounting system that can adapt to different orientations and mounting positions on the vehicle body, eliminating the limitations of fixed-shaped rubber mounts

Inventive Principle:

Principle #15Dynamics

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

This solution effectively reduces radial, axial, and circumferential vibrations, facilitates easy installation on both horizontal and vertical surfaces, and maintains the compressor's compact size by using vibration dampers made of durable, thermally resistant materials like silicone rubber, ensuring reliable operation and reduced maintenance.

Implementation Method 1

One of the housing and the support has a projection and the other of the housing and the support has a recess that is engaged with the projection through a vibration damper

Methodology Applied

Scientific EffectVibration damping: Damping

Implementation Method 2

using vibration dampers made of durable, thermally resistant materials like silicone rubber

Methodology Applied

Scientific EffectViscoelasticity: Viscoelasticity

Data Source

PatentEP2642072B1Motor-driven compressor

Publication Date: 2018.11.21 TOYOTA INDUSTRIES CORP

Figure 1
Figure 2
Figure 3

AI summary

A motor-driven compressor includes an electric motor, a compression mechanism driven by the electric motor to compress refrigerant, a housing accommodating the electric motor and the compression mechanism, and a support having a mounting to be fastened to an object by a fastener. One of the housing and the support has a projection and the other of the housing and the support has a recess that is engaged with the projection through a vibration damper so that the support supports the housing.