Back Door Handle Switch Knob Temporary Fixing Mechanism
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Solution Overview
Problem
The existing back door handle devices suffer from positional misalignment and disruption during assembly due to the switch knob's contact with the outer cover, which affects the operational efficiency and reliability of the locking/unlocking mechanism.
Innovation Solution
The proposed solution involves a back door handle device design with a switch knob that includes an operating portion, a spring section for elastic return, and a temporary fixing portion, such as a rod-like member with a claw, to prevent misalignment and contact issues during assembly, ensuring proper positioning and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the switch knob is not fixed within the housing before assembly, then the assembly process is simpler and faster, but positional misalignment of the switch knob occurs and assembly disruption may happen due to contact with the outer cover
Solution Approach 1:
The switch knob is preliminarily fixed to the housing by the temporary fixing portion before the housing is assembled to the outer cover. This preliminary positioning action prevents misalignment and assembly disruption while maintaining relatively simple assembly procedures.
2Manufacturing precision
If the switch knob is held at initial position during assembly, then positioning accuracy is improved, but the device structure becomes more complex
Solution Approach 1:
The switch knob is segmented into functional portions: an operating portion for user interaction, a spring section for elastic return, and a temporary fixing portion for assembly positioning. This segmentation allows the temporary fixing function to be integrated without significantly increasing overall structural complexity.
Solution Approach 2:
The temporary fixing portion acts as an intermediary mechanism between the switch knob and the housing, providing preliminary positioning during assembly. This intermediary structure enables accurate positioning while maintaining relatively simple overall device architecture.
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
This design effectively prevents positional misalignment and assembly disruptions, ensuring reliable operation and improved user experience by maintaining the switch knob's correct position within the housing until assembly is complete.
Implementation Method 1
a spring section that, when the operating portion is moved from the initial position toward the switch position, is elastically deformed to produce an elastic force in such a direction as to return the operating portion to the initial position
Data Source
AI summary
A back door handle device includes a switch to output a signal for unlocking or locking the back door, a switch knob to supplement actuating force of the switch, a housing for receiving the switch and the switch knob, and an outer cover that covers the housing. The switch knob includes an operating portion that is moved from an initial position to a switch position, a spring section that, when the operating portion is moved from the initial position toward the switch position, is elastically deformed to produce elastic force in such a direction as to return the operating portion to the initial position, and a temporary fixing portion that prevents such movement of the switch knob that the operating portion is moved from the initial position to the opposite side to the switch position. The signal is output from the switch when the operating portion reaches the switch position.