Wallet-Shape Nut for Secure Window Mechanism Mounting
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Solution Overview
Problem
Existing fixing devices for parts to supports, such as window mechanisms, lack efficient torque transmission and secure mounting, particularly when dealing with varying support thicknesses and materials.
Innovation Solution
A wallet-shaped nut device with a base part and pivoting flap, featuring reinforcing arms, locking lugs, and a rubber washer, allows for high torque transmission and secure mounting by engaging with the support edge and distributing screwing force evenly, while accommodating thickness differences with a rubber washer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional fixing device is used, then the structure is simple, but the torque transmission capability is insufficient and mounting is not secure
Solution Approach 1:
The fixing device is divided into distinct functional segments: a base part for mounting on the support edge, a pivoting flap for securing the screw, locking lugs for engagement, and a rubber washer for thickness compensation. This segmentation allows each component to be optimized for its specific function while contributing to overall torque transmission capability.
Solution Approach 2:
The device transitions from a planar structure to a three-dimensional wallet-shaped configuration with reinforcing arms extending perpendicular to the base plate. This dimensional change creates multiple engagement points and distributes forces across different spatial planes, significantly enhancing torque transmission and mounting security.
2Adaptability or versatility
If a rigid fixing structure is used, then the mounting is secure, but it cannot accommodate varying support thicknesses
Solution Approach 1:
The rubber washer introduces elastic deformation capability to the rigid fixing structure. By changing the physical state from purely rigid to elastically compliant, the device can accommodate varying support thicknesses while maintaining secure mounting through the elastic recovery of the rubber material.
Solution Approach 2:
The rubber washer acts as an intermediary element between the rigid base part and the support surface. It mediates the thickness variations by deforming elastically, allowing the rigid structural components to maintain their geometric relationships while adapting to different support dimensions.
3Stability of the object's composition
If the screwing force is concentrated at one point, then the application is simple, but the force distribution is uneven and causes stress concentration
Solution Approach 1:
The force application point is segmented into multiple contact points through the L-shaped rim and reinforcing arms. Instead of concentrating force at a single location, the screwing action is distributed across the L-shaped rim contact area and transmitted through multiple reinforcing arm connections, achieving even force distribution.
Solution Approach 2:
The force distribution mechanism utilizes three-dimensional geometry with reinforcing arms extending in multiple directions from the base plate. This spatial configuration creates a force distribution network that evenly disperses screwing forces across multiple engagement points, preventing stress concentration.
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 device achieves secure and reliable fixation of parts to supports with high torque capacity and adaptability to varying support thicknesses, ensuring even force distribution and easy disassembly.
Implementation Method 1
A rubber washer 26 surrounds the barrel to absorb differences in thickness of the support 3
Implementation Method 2
The legs are elastically deformable so that they can be removed from the arms
Data Source
Figure 1~2
Figure 3~4
Figure 5A~5E
AI summary
The invention relates to a device for attaching a part to a support such as a window, of the type comprising a nut (1) that can be pre-mounted on the edge of the support and a screw for attaching said part to this support. The device is characterized in that the nut (1) has a wallet-like configuration comprising a base portion (6) adapted to be mounted on the edge of the support and a flap-shaped portion (8) pivoting between an open position of the nut and a closed position in which the flap (8) is locked onto the base portion (6). The invention is applicable for attaching a mechanism for raising and lowering a window of a door of a motor vehicle.