Motor Vehicle Door Handle Mount With Reinforced Fixing Tabs
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Solution Overview
Problem
The existing methods for fixing door handles, particularly using fastening tabs, often result in loose or broken tabs, leading to premature wear and a loss of handle stability due to excessive bending between the handle and door panel.
Innovation Solution
A door structure with a reinforcement structure that secures the longitudinal portions of the fixing means to each other, reducing bending and enhancing stability by distributing the load more effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fastening tabs are used to fix the door handle to the door panel, then the handle can be easily installed and the method is economical, but the tabs experience significant bending between the handle and door panel leading to premature wear and loss of stability
Solution Approach 1:
The fixing means is divided into multiple longitudinal portions (at least two) that are distributed across the door panel. This segmentation allows the load to be distributed over multiple attachment points rather than concentrated on single tabs, reducing the bending stress on each individual portion and preventing premature wear while maintaining ease of installation.
Solution Approach 2:
The fixing means extends in the thickness direction of the door panel (from the first side where the handle is visible to the second side opposite to it). This dimensional extension allows the fixing means to be secured at both the handle end and the door panel end, creating a distributed load path that reduces bending between attachment points while maintaining simple installation procedures.
2Reliability
If multiple tabs are used to distribute tension over a larger surface, then handle stability is improved, but the tabs still experience significant bending and can become loose or break
Solution Approach 1:
The fixing means is designed with at least two longitudinal portions that can flexibly distribute dynamic loads. When the door handle is operated, the load is dynamically distributed across multiple longitudinal portions rather than concentrated on single tabs. This dynamic load distribution reduces peak stresses on individual portions, preventing loosening and breaking while maintaining handle stability during operation.
Solution Approach 2:
The invention changes the structural parameters of the fixing means by extending it through the door panel thickness and securing it at both ends (handle end and door panel end). This parameter change transforms the fixing means from simple surface-mounted tabs into through-panel fasteners, fundamentally altering the stress distribution and reducing bending moments while improving overall durability.
3Stability of the object's composition
If fastening tabs are secured to the door panel, then the handle is attached to the door, but the tabs bend significantly between the handle and door panel causing premature wear
Solution Approach 1:
The fixing means is pre-configured with multiple longitudinal portions that are designed to distribute loads before the door handle is installed. This preliminary structural configuration ensures that when the handle is attached, the bending stresses are already distributed across multiple portions, preventing premature wear and extending the service life of the attachment system.
Solution Approach 2:
The fixing means extends through the thickness dimension of the door panel, being secured at the handle end (first side) and the door panel end (second side). This dimensional extension creates a distributed load path that reduces bending between attachment points, thereby improving attachment stability while extending the service life of the fixing system.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6a
AI summary
The invention relates to a door structure (1) of a motor vehicle, comprising: a door panel (2), a door handle (3) arranged on a first side (2a) of the door panel (2) to perform an opening/closing operation of the structure, at least one fixing means (4) of the handle extending at least partially on a second side of the door panel (2) and opposite to the first side (3a), the fixing means (4) having at least two longitudinal portions (4a, 4b) each secured to a first end (4e1) of the door handle (3), and to a second end (4e2) of the door panel (2), wherein it comprises a reinforcement structure (5) configured to secure the two longitudinal portions (4a, 4b) to each other.