Actuating Mechanism Retaining Layout for Smaller Housing Openings

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Solution Overview

Problem

Existing actuation mechanisms for clutch systems require large housing openings due to the need for adjustment movements caused by clutch wear, which can be cumbersome for assembly and installation.

Innovation Solution

An actuation mechanism with a retaining mechanism that blocks the transmission element's displacement parallel to the actuation direction, allowing for a compact design by positioning the blocking point outside the working stroke, enabling a smaller mounting opening and efficient assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a compensation mechanism is provided to allow adjustment movement of the transmission element, then the transmission element can be adjusted for clutch wear compensation, but a correspondingly large opening must be provided in the housing for mounting

Engineering Contradiction:
Improveadjustment capabilityVSAvoidhousing opening size
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The retaining mechanism is configured to block the transmission element in a pre-defined position before assembly is completed. This preliminary blocking action allows the transmission element to be held in place during the assembly process, enabling the actuating mechanism to be installed through a smaller housing opening without requiring the transmission element to move freely during installation.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If the transmission element is allowed to move freely for adjustment, then clutch wear compensation is achieved, but the actuating mechanism requires a larger mounting opening for assembly

Engineering Contradiction:
Improveclutch wear compensationVSAvoidactuating mechanism length
Core Design Contradiction:
Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The retaining mechanism provides preliminary blocking of the transmission element at a position outside the working stroke range. This allows the actuating mechanism to be designed with a compact length suitable for smaller mounting openings, while still enabling adjustment movements within the working stroke range during normal operation when the retaining mechanism is disengaged.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The blocking function is segmented from the working stroke function. The retaining mechanism provides blocking at positions outside the working stroke, while the transmission element maintains full movement capability within the working stroke range for clutch wear compensation. This segmentation allows independent optimization of both assembly requirements and operational requirements.

Inventive Principle:
Principle #1Segmentation

3Area of stationary object

If a retaining mechanism is added to block transmission element displacement, then assembly through smaller openings is enabled, but the device complexity increases

Engineering Contradiction:
Improvehousing opening sizeVSAvoidretaining mechanism complexity
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The retaining mechanism is designed to perform multiple functions: blocking the transmission element during assembly to enable installation through smaller openings, and being disengageable to allow adjustment movements during operation. This multi-functionality reduces the need for separate mechanisms for assembly and operation, thereby limiting the increase in device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4150228B1Installation fixing means for an actuating mechanism
Publication Date: 2025.01.01 KNORR BREMSE SYSTEME FUER NUTZFAHIZEUGE GMBH
  • EP4150228B1 patent drawingFigure 1
  • EP4150228B1 patent drawingFigure 2
  • EP4150228B1 patent drawingFigure 3

AI summary

The invention relates to an actuating mechanism, having: - a transmission element (1) which is designed to be displaced parallel to an actuation direction (x) by an actuation force which is applied to the actuating mechanism; and - a restraining mechanism (2) which is designed to block a displacement of the transmission element (1) parallel to the actuation direction (x). The invention further relates to an actuator and a vehicle.