Wall Fitting With Pivoting Threaded Coupling for Tolerance Compensation
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Solution Overview
Problem
Existing fittings for securing threaded elements to wall sections face challenges due to manufacturing tolerances, requiring reworking or undesirable pretensioning to compensate for alignment issues, and lack efficient torque transmission and tolerance compensation.
Innovation Solution
A fitting with a movably received coupling part in a base body, allowing variable orientation and movement within a predetermined range, combined with a clamping ring that elastically or plastically deforms during torque application, ensuring non-positive/frictional coupling and torque transmission despite manufacturing tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed coupling part is used in the base body, then torque transmission is efficient, but manufacturing tolerances cause misalignment requiring reworking or pretensioning
Solution Approach 1:
The coupling part is designed to be rotatable relative to the base body within a predetermined angular interval, transforming a static fixed connection into a dynamic adjustable one. This allows the coupling part to adapt its orientation to compensate for manufacturing tolerances in the recess, while still enabling reliable torque transmission when in the functional position.
Solution Approach 2:
The thread axis of the coupling part is designed with variable orientation that can change within a predetermined angular interval. This parameter change allows the threaded portion to align properly with components despite variations in recess positioning, eliminating the need for reworking or pretensioning.
2Device complexity
If the coupling part is fixed in position, then structural simplicity is maintained, but tolerance compensation is not possible
Solution Approach 1:
The coupling part incorporates rotational freedom within a limited angular interval, adding adaptability without requiring complex adjustment mechanisms. The rotary coupling allows the coupling part to pivot and align with the component being fastened, compensating for tolerance variations while maintaining a relatively simple overall structure.
Solution Approach 2:
The coupling part serves multiple functions: it transmits torque, compensates for manufacturing tolerances, and provides adjustable alignment. This multi-functionality is achieved through the rotatable design that works within a predetermined angular interval, making the fitting adaptable to various installation conditions.
3Stability of the object's composition
If the clamping ring is rigid, then structural stability is high, but elastic deformation for secure fixation cannot occur
Solution Approach 1:
The clamping ring is designed with elastic properties that allow controlled deformation. During the screwing operation, the clamping ring deforms elastically in response to the torque applied through the cams, enabling it to expand and secure itself to the wall section. After deformation, it maintains structural stability while providing strong fixation.
Solution Approach 2:
The elastic deformation of the clamping ring acts as a cushioning mechanism that absorbs and distributes the forces generated during installation. This preliminary elastic response prevents stress concentrations and ensures uniform securing force around the wall section recess.
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 solution provides reliable, tolerance-compensating, and torque-transmitting fixation of components to wall sections without requiring additional tools or reworking, ensuring secure and efficient attachment.
Implementation Method 1
an elastic deformation or in certain cases an elastic and plastic deformation of the clamping ring occurs during the expansion of the clamping ring due to the interaction of the at least one first cam of the sleeve section of the base body with the clamping ring
Implementation Method 2
an elastic deformation or in certain cases an elastic and plastic deformation of the clamping ring occurs during the expansion of the clamping ring
Implementation Method 3
a rotary coupling for a transmission of a torque between the coupling part and the base body about the central axis
Implementation Method 4
allows a transmission of torque between the coupling part and the base body
Data Source
AI summary
Fitting for fixing a threaded element to a wall section, including a base body which is penetrated by a recess, which recess is extended along a central axis, further including a clamping ring which is rotatably mounted on an outer surface of the base body, wherein a cam is assigned to the outer surface of the base body or to the clamping ring, which cam effectuates a change in diameter of the clamping ring during a rotary movement of the clamping ring relative to the base body, wherein a coupling part is movably received in the recess and forms with the base body a rotary coupling, wherein a threaded portion of the coupling part determines a thread axis, wherein the coupling part is accommodated in the recess with a variable orientation of the thread axis within a predetermined angular interval and/or within a predetermined distance interval to the central axis.