Refrigerant Compressor Bearing Assembly With Crash-Guiding Sliding Inclines

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Solution Overview

Problem

Existing bearing assemblies for refrigerant compressors in motor vehicles do not effectively manage the displacement of the compressor during accidents, which can lead to excessive damage to nearby components such as electric energy stores.

Innovation Solution

A bearing assembly with sliding inclines that allow the refrigerant compressor to be steered in a targeted manner during accidents, preventing excessive encroachment into sensitive regions and minimizing damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the refrigerant compressor is rigidly mounted on the chassis, then the mounting structure is simple and stable, but the compressor cannot be steered during accidents and may cause excessive damage to nearby components

Engineering Contradiction:
Improveprotection of electric energy storeVSAvoidmounting structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mounting structure is divided into separate functional elements: the holder for mounting the compressor, the sliding incline mechanism for accident protection, and the chassis mounting points. This segmentation allows each component to perform its specific function independently, enabling the compressor to be steered during accidents while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The sliding incline acts as an intermediary element between the compressor holder and the chassis. During normal operation, it remains inactive. During an accident, it mediates the displacement by providing a controlled sliding path, steering the compressor away from the electric energy store without requiring complex active control systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the refrigerant compressor is allowed to move freely during accidents, then damage to the compressor is reduced, but the displacement direction is random and may still damage nearby components

Engineering Contradiction:
Improveprotection of nearby componentsVSAvoiddisplacement control
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The sliding incline is pre-positioned and pre-oriented at specific angles (e.g., 30-60 degrees) before the accident occurs. This preliminary configuration ensures that when the compressor is displaced during an accident, it automatically follows the pre-determined safe path away from the electric energy store, eliminating the need for real-time control decisions.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The sliding incline provides a curved or angled path rather than a straight linear displacement. This geometric feature guides the compressor along a controlled arc-shaped trajectory, ensuring it moves away from the electric energy store in a predictable manner while accommodating the dynamic forces during the accident.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Reliability

If the sliding incline is positioned to protect the electric energy store, then the compressor is steered away from the energy store, but the compressor may encroach on other regions and cause damage

Engineering Contradiction:
Improveprotection of electric energy storeVSAvoiddamage to other components
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The sliding incline is designed with specific local geometric properties (angle, length, position) tailored to the particular layout of the vehicle compartment. The incline angle and orientation are optimized to steer the compressor away from the electric energy store while considering the positions of other components, ensuring protection of the most critical component without unnecessarily endangering others.

Inventive Principle:
Principle #3Local quality

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 sliding incline mechanism effectively guides the refrigerant compressor during accidents, reducing the risk of excessive damage to nearby components and protecting critical systems like electric energy stores.

Implementation Method 1

the sliding incline is provided on a holder element on the compressor side... by means of which the refrigerant compressor can be steered at least indirectly in a targeted manner in a direction in the event of an accident-induced displacement

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS20250187407A1Bearing Assembly of a Refrigerant Compressor on a Chassis of a Motor Vehicle, as Well as a Motor Vehicle
Publication Date: 2025.06.12 MERCEDES BENZ GROUP AG
  • US20250187407A1 patent drawing
  • US20250187407A1 patent drawing
  • US20250187407A1 patent drawing

AI summary

A bearing assembly includes at least one sliding incline, via which a refrigerant compressor is steerable in a targeted manner in a direction in the event of an accident-induced displacement of the refrigerant compressor. The refrigerant compressor is mounted via a holder on a chassis of a motor vehicle.