Multipart Adjustment Element With Press-Fit Sleeve for Tolerance Compensation
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Solution Overview
Problem
Existing tolerance compensation arrangements face challenges in transmitting forces reliably across components due to reliance on frictional connections, complex manufacturing processes, and limited material suitability for high-force applications, leading to inefficiencies and increased costs.
Innovation Solution
A multipart adjustment element comprising a threaded bush with a step, a dragging element with radially inward spring arms, an abutment disc, and a securing sleeve, which provides a secure frictional and form-fit connection for effective force transmission and tolerance compensation, allowing for assembly in any direction and using materials suitable for high-force applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a frictional connection is used to transmit force from the dragging element to other components, then the structure is simple, but the force transmission reliability is insufficient for high-force applications
Solution Approach 1:
The adjustment element is divided into multiple independent components: a dragging element with spring arms, a threaded bush, an abutment disc, and a securing sleeve. This segmentation allows each component to have specialized functions, with the securing sleeve providing form-fit connections for reliable force transmission while the dragging element maintains structural simplicity through frictional engagement.
Solution Approach 2:
The patent employs a composite connection approach combining frictional connection (dragging element to threaded bush) with form-fit connection (securing sleeve providing tight connection). This composite connection strategy enables the system to achieve both structural simplicity and high-force transmission reliability by utilizing different connection mechanisms in different locations.
2Ease of operation
If springing fingers with slots are used in the clamping section, then the adjustment element can be rotatable, but the manufacturing process becomes complex and expensive
Solution Approach 1:
The dragging element is segmented into multiple spring arms that are radially inwardly protruding, allowing rotational movement without requiring complex slots. Each spring arm can deflect independently to accommodate rotation, simplifying the manufacturing process compared to milled slots while maintaining the desired rotatability.
Solution Approach 2:
The spring arms are designed to be elastically deformable, allowing the dragging element to rotate dynamically as the spring arms deflect. This dynamic design enables rotational movement through elastic deformation rather than fixed slots, significantly simplifying manufacturing while maintaining operational flexibility.
3Reliability
If the dragging element is secured against falling out during transport, then the assembly reliability is improved, but the assembly direction is restricted
Solution Approach 1:
The securing sleeve is designed with an asymmetric press-fit connection that provides form-fit engagement in the radial direction to prevent falling out during transport, while maintaining freedom of movement in the axial direction. This asymmetric design allows assembly from either direction while still providing reliable retention.
Solution Approach 2:
The connection system is segmented into radial retention (securing sleeve preventing fall-out) and axial freedom (allowing assembly from any direction). This segmentation of constraints allows the dragging element to be reliably secured against radial displacement while maintaining adaptability for assembly in any axial direction.
4Reliability
If a multipart adjustment element with press-fit connection is used, then force transmission reliability is improved, but the device complexity increases
Solution Approach 1:
Multiple functions are merged into the securing sleeve: it provides form-fit connection for reliable force transmission, acts as an anti-rotation protection, and secures the dragging element against falling out. By combining these functions into a single component, the device complexity is minimized while achieving high-force transmission reliability.
Solution Approach 2:
The securing sleeve is designed as a multi-functional element that simultaneously provides tight press-fit connection, anti-rotation protection, and retention against fall-out. This universal component approach reduces the total number of parts needed while ensuring reliable force transmission through form-fit connections.
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 multipart adjustment element ensures reliable force transmission and secure assembly, enabling effective tolerance compensation across components while being suitable for high-force applications and reducing manufacturing complexity, thus addressing the limitations of existing technologies.
Implementation Method 1
a securing sleeve with passage opening which is arranged at least partially in a press-fit in the bore of the threaded bush in order to tightly connect the abutment disc, the threaded bush and the dragging element with each other
Implementation Method 2
a dragging element with at least one radially inwardly protruding spring arm
Data Source
AI summary
A multipart adjustment element for a tolerance compensation arrangement for automatically compensating for tolerances in the spacing between a first and a second component. The adjustment element comprises a bush, a dragging element, a contact disc, and a securing sleeve. The bush has a bore, an outer thread with a first direction, and a step. The dragging element comprises at least one spring arm protruding radially inwards, wherein a first axial end of the dragging element is arranged on the step in the threaded bush. The contact disc is arranged adjacently to the first axial end of the threaded bush and has a through-opening. The securing sleeve likewise has a through-opening and is arranged at least partly in the bore of the threaded bush with a press-fit connection in order to securely connect the contact disc, the threaded bush, and the dragging element together.