Motor Bearing Block Alignment via Dynamic Engagement

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Solution Overview

Problem

Current motor assembly technologies face challenges in manufacturing efficiency, cost-effectiveness, and assembly complexity due to stringent tolerances and alignment requirements between bearing blocks and base bodies, particularly in engine assemblies that require frequent disassembly and reassembly.

Innovation Solution

The introduction of a counter-element area with a line or groove-like recess allows for a degree of freedom in the assembled state, enabling displacement of the bearing block relative to the base body, which reduces manufacturing accuracy demands and facilitates alignment, using engagement elements that form a non-positive connection upon assembly, allowing for precise alignment and easy reassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional rigid form-fitting connections are used between bearing block and base body, then alignment precision is improved, but manufacturing complexity and cost increase due to stringent tolerance requirements

Engineering Contradiction:
Improvealignment precisionVSAvoidmanufacturing complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by designing a connection that transitions from rigid to flexible. The deformation element (such as a resilient pin or elastic component) allows the bearing block to be mounted on the base body with intentional play, enabling dynamic adjustment during assembly. This eliminates the need for precise rigid tolerances while maintaining functional alignment through the deformation capability of the connection element.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If traditional rigid form-fitting connections are used between bearing block and base body, then alignment precision is improved, but assembly time and cost increase

Engineering Contradiction:
Improvealignment precisionVSAvoidassembly efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The dynamic connection design allows for quick assembly by permitting the bearing block to be mounted with play on the base body. The deformation element absorbs misalignment automatically during assembly, eliminating the need for time-consuming precision adjustments or special alignment tools, thereby significantly improving assembly efficiency.

Inventive Principle:
Principle #15Dynamics

3Stability of the object's composition

If traditional rigid connections are used, then structural stability is improved, but ease of disassembly and reassembly deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of disassembly
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The deformation element creates a connection that is stable during operation but easily disassembled when needed. The play and deformation capability allow the bearing block to be mounted and dismounted repeatedly without damage, facilitating maintenance and repair while maintaining structural integrity during normal use.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP2574743B1Motor module comprising a bearing block and method for assembling same
Publication Date: 2015.03.04 MAN TRUCK & BUS SE
  • EP2574743B1 patent drawingFigure 1~2
  • EP2574743B1 patent drawingFigure 3
  • EP2574743B1 patent drawingFigure 4

AI summary

Motor assembly comprising a base body (1), a shaft (2) and at least one bearing block (3), wherein the bearing block (3) has an opening (4) for receiving and rotatably supporting the shaft (2), wherein the bearing block (3) is attached to the base body (1) by at least one fixing means (5) and in the final assembly state the shaft is rotatably supported on the base body, wherein in the contact area (6) of the bearing block (3) and the base body (1) at least one engagement element (7) engages in a counter element area (8), wherein the counter element area (8) has at least one edge of a recess (9) designed as a line (10) or a line (10) within a surface of a recess (9), preferably in a groove-like recess (9), and the counter element area (8) and the at least one engagement element (7) are designed such thatthat the bearing block (3) and the base body (1) in the assembled state and without mounting the fixing means (5) do not form a positive locking connection in at least one direction along the line (10).