Adjustable Door Latch for Vehicle Vent Opening Fit
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Solution Overview
Problem
Existing ventilation door lock devices fail to adapt to different vehicle models due to fixed ventilation opening sizes, leading to ineffective engagement, shaking, or excessive opening, which compromises airtightness and increases wear and debris entry.
Innovation Solution
An adjustable door latch with a base part, clamping part, ventilation groove, and movable lock tongue, featuring adjustable holes and a rebound pin for telescopic positioning, allowing flexible adjustment of ventilation opening size and enhanced clamping stability through a multi-angle structure and hook-shaped protrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed ventilation opening size is used in the door latch, then the structure is simple and easy to manufacture, but it cannot adapt to different vehicle models with varying door thicknesses, resulting in ineffective engagement or excessive opening
Solution Approach 1:
The movable lock tongue is designed to be adjustable along the ventilation groove, allowing it to change position dynamically. Multiple positioning holes are provided on the movable lock tongue, which can be aligned with positioning protrusions on the base part to fix the tongue at different positions. This enables the ventilation opening size to be adjusted according to different vehicle door thicknesses, resolving the contradiction between adaptability and structural simplicity.
2Productivity
If the ventilation opening size is increased to improve ventilation, then more air can enter the vehicle, but the movable lock tongue cannot fully close the door on thinner doors, compromising airtightness and allowing debris entry
Solution Approach 1:
The movable lock tongue can be positioned at different locations along the ventilation groove based on the door thickness. By selecting appropriate positioning holes, the tongue can either extend further to allow larger ventilation openings on thick doors or retract to maintain proper door closure on thin doors. This dynamic adjustment capability allows the system to optimize both ventilation efficiency and door airtightness according to specific application requirements.
3Reliability
If the ventilation opening size is decreased to maintain door closure, then airtightness is improved, but ventilation efficiency is reduced and the driving environment remains hot
Solution Approach 1:
The adjustable movable lock tongue allows users to select the optimal position based on the actual door thickness and ventilation requirements. By providing multiple positioning holes along the ventilation groove, the system enables flexible adjustment to achieve the right balance between maintaining door airtightness and ensuring sufficient ventilation efficiency for the driving environment.
4Reliability
If a fixed position movable lock tongue is used, then the structure is simple, but it causes severe shaking during driving due to excessive installation clearance on thicker doors, increasing wear and potential detachment
Solution Approach 1:
The movable lock tongue with multiple positioning holes allows adjustment to reduce installation clearance on thicker doors. By selecting positioning holes that provide optimal engagement distance, the tongue can maintain stable contact with the door lock, preventing severe shaking during driving and reducing wear and potential detachment, while keeping the adjustment mechanism relatively simple.
5Device complexity
If the movable lock tongue adjustment range is limited, then the structure is simpler, but it cannot fully close the door on thinner doors, allowing dust and rain to enter
Solution Approach 1:
The movable lock tongue is designed with multiple positioning holes distributed along the ventilation groove, providing sufficient adjustment range to accommodate both thick and thin doors. This allows the tongue to be positioned appropriately for each application, ensuring full door closure on thin doors to prevent dust and rain entry, while maintaining compatibility across different vehicle models without requiring complex adjustment mechanisms.
Data Source
AI summary
An adjustable door latch is provided, which includes a base part, one side of the base part is provided with a clamping part. A ventilation groove is provided in a middle of the base part, a positioning hole is provided on the ventilation groove. A rebound pin is provided on the base part, a movable lock tongue is provided in the ventilation groove. The movable lock tongue is provided with spaced adjustment holes, and a bottom end of the rebound pin penetrates the positioning hole and is plugged into the adjustment hole. The adjustment holes are matched with the positioning holes on the ventilation groove, and the rebound pin is used to achieve telescopic positioning. The size of the ventilation opening can be flexibly adjusted according to thickness of the vehicle door and the distance between the door locks of different vehicle models adjustable door latch.