Vehicle Door Handle Fastening Slide Mechanism
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Solution Overview
Problem
Existing door handle units for motor vehicles face challenges in balancing comfort and styling, with inefficient installation processes and high costs due to the need for screw-based fastening from the inner side, which complicates the integration with other door modules and affects production efficiency.
Innovation Solution
A door handle unit with a fastening slide that allows pre-installation and final installation from the narrow side of the vehicle door, using engagement elements to clamp the handle module to the door outer skin or structural elements, enabling efficient installation and utilization of previously unused installation space, with the option for a single fastening slide and simple screw-based movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw elements are used to fasten the door handle unit from the door inner side, then the handle module can be securely fixed to the door outer skin, but the installation process becomes costly and time-consuming
Solution Approach 1:
The fastening system is divided into two functional parts: a fastening slide that provides secure clamping and engagement elements that enable tool-free attachment. This segmentation allows the secure fastening function to be separated from the time-consuming screw installation process, improving productivity while maintaining reliability.
Solution Approach 2:
The door handle unit is pre-assembled with the fastening slide and engagement elements attached to the handle module before installation on the door. This preliminary preparation enables the entire fastening mechanism to be installed as a single unit, eliminating the need for separate screw fastening operations and significantly improving installation efficiency.
2Reliability
If the door handle unit is installed from the door inner side using screw elements, then the handle module can be securely fastened, but the integration with door modules (lock, window guiderail) becomes complex and affects production efficiency
Solution Approach 1:
The fastening slide is integrated with the handle module as a unified assembly, combining the fastening function with the handle unit itself. This merging eliminates the need for separate fastening operations and allows the door handle unit to be installed together with door modules (lock, window guiderail) through a single access point from the door inner side, reducing installation complexity.
Solution Approach 2:
The fastening slide serves multiple functions: it provides secure clamping of the handle module to the door outer skin, enables tool-free installation from the door inner side, and facilitates integration with various door modules. This multi-functionality reduces the need for separate fastening mechanisms and simplifies the overall installation process.
3Reliability
If traditional fastening methods are used, then the handle module can be securely attached, but the installation process requires access from the door outer side which obstructs the wet-dry space partition
Solution Approach 1:
Instead of fastening the door handle unit from the door outer side as in traditional methods, the fastening slide and engagement elements are designed to be operated from the door inner side. This inversion of the fastening direction allows installation without obstructing the wet-dry space partition and improves accessibility during installation.
Solution Approach 2:
The fastening slide acts as an intermediary mechanism that transfers the fastening force from the door inner side to the handle module. This intermediary component enables secure attachment while allowing access to the fastening mechanism from the door inner side, avoiding obstruction of the wet-dry space partition and improving installation accessibility.
Data Source
AI summary
The disclosure relates to a door handle for a vehicle door which can be installed as such from the door inner side on a handle recess of the outer skin of the vehicle door, wherein the handle unit has a handle module and an especially elongate handle part which is accommodated by the handle module, wherein the handle module has a mechanism for the motorized adjustment of the handle part, wherein the handle unit can be pre-installed on the door. The door handle unit can have a fastening slide which, with the handle unit pre-installed is connected to the handle module on one side and to the motor vehicle door on the other side, wherein for the final installation of the door handle unit an installation movement can be introduced into the fastening slide by a tool in an installation direction from a narrow side of the vehicle door.