Tolerance Compensation Fastener with Form-Fit Driver Engagement
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Solution Overview
Problem
Existing devices for tolerance compensation in fastening components face reliability issues due to high torques and rotational speeds, leading to inconsistent fastening and potential production stoppages when the compensating elements are not reliably rotated out of the base body by the driver device.
Innovation Solution
A device with a driver device connected to the compensating element in a form fit, utilizing a spring element or fastening elements like ribs or projections to ensure a tight, force-fit connection, and centering elements to align the screw correctly, preventing slipping and ensuring reliable rotational movement even at high torques and speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driver device is connected to the compensating element via a loose fit, then the structure is simpler, but the driver device slips under high torque and rotational speed, causing unreliable fastening
Solution Approach 1:
The driver device is designed with a flexible body that can dynamically adapt its shape to engage with the compensating element. The flexible material allows the driver device to deform under high torque and rotational speed, maintaining reliable connection without slipping, while returning to its original shape when torque is reduced. This dynamic adaptation resolves the contradiction between simple connection structure and reliable fastening under varying operational conditions.
2Reliability
If the driver device is connected tightly to the compensating element, then slipping is prevented under high torque, but the assembly time increases
Solution Approach 1:
The driver device utilizes changes in physical parameters of the flexible material, specifically its elasticity and deformability. Under high torque and rotational speed, the material becomes more compliant, allowing easy engagement with the compensating element. Once engaged, the same material properties prevent slipping by maintaining continuous contact. This parameter-based adaptation enables reliable connection without increasing assembly time, as the material automatically adjusts to the applied forces.
3Strength
If high torque is applied to rotate the compensating element out of the base body, then the fastening is more secure, but the driver device may slip or fail to rotate the compensating element reliably
Solution Approach 1:
The driver device is constructed from flexible material that can conform to the contours of the compensating element. This flexible construction allows the driver device to maintain continuous contact and transmit high torque effectively without slipping. The flexibility enables the driver device to wrap around or engage with the compensating element's surface, ensuring reliable rotation even under high torque conditions that would cause rigid connections to fail.
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 enables reliable and quick fastening by preventing slipping between the compensating element and the driver device, ensuring accurate alignment and secure attachment of components, thus preventing production stoppages and improving assembly efficiency.
Implementation Method 1
The driver device can be designed as a spring element. The spring element can be a spring clamp which is manufactured, for example, as a bent metal part.
Data Source
AI summary
A device for fastening to a component having a base body and a compensating element, wherein the compensating element is connected to the base body via a thread, and wherein the compensating element has a passage with a driver device for a screw. The driver device is connected to the compensating element in a form fit.