Quick-Release Door Check Strap for Fast Secure Detachment
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Solution Overview
Problem
Existing vehicle door check straps are time-consuming to detach from the vehicle body, especially in removable door designs.
Innovation Solution
A removable check strap assembly featuring a bracket, check strap with a pivot pin and retention spring, and spring-biased retention members, allowing for quick detachment by manipulating the retention mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional check strap attachment mechanism is used, then the door can be securely positioned, but the detachment process becomes time-consuming
Solution Approach 1:
The check strap attachment mechanism transitions from a static fixed state to a dynamic quick-release state through the push-button actuation system. The retention members are spring-biased to automatically engage with the detent features during installation, but can be quickly disengaged by depressing the push-button, enabling rapid detachment while maintaining secure positioning during normal operation
Solution Approach 2:
The spring-biased retention members automatically engage with the detent features on the bracket without requiring manual intervention. The system self-secures during installation through the spring force driving the retention members into the engaged position, eliminating the need for tools or complex manual manipulation during both attachment and detachment operations
2Reliability
If a secure retention mechanism is used, then the check strap remains firmly attached, but the release operation becomes complex
Solution Approach 1:
The release function is extracted and concentrated into a single push-button actuator that controls the spring-biased retention members. This simplifies the user interface to a single intuitive action (pressing the button) while the internal spring mechanism handles the complexity of disengaging multiple retention points simultaneously, making the release operation simple despite the secure multi-point attachment
3Reliability
If multiple retention points are used, then the attachment is more secure, but the detachment process becomes more time-consuming
Solution Approach 1:
Multiple spring-biased retention members are merged into a single actuation system controlled by one push-button. When the button is pressed, all retention members disengage simultaneously through the interconnected spring mechanism, allowing rapid detachment of the check strap from multiple attachment points without requiring sequential manual intervention at each retention location
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
Enables rapid and secure attachment and detachment of vehicle doors, reducing installation and removal time while maintaining door positioning.
Implementation Method 1
a retention spring including a proximate end attached to the head of the pivot pin and a distal end configured to mate with the shank
Implementation Method 2
spring-biased retention members, movable between an extended and retracted position upon depression of a button
Data Source
AI summary
A removable check strap assembly for a vehicle having a vehicle body and a vehicle door. The check strap assembly includes a bracket configured to be attached to the vehicle body; a check strap including a first end configured to be attached to the vehicle door and a second end defining an opening configured to be attached to the bracket; a pivot pin having a head and a shank, the opening of the second end of the check strap being configured to receipt of the shank of the pivot pin; and a retention spring including a proximate end attached to the head of the pivot pin and a distal end configured to mate with the shank. The bracket includes a notch configured for receipt of retention spring, and the distal end of the retention spring includes a key-hole shaped opening configured for receipt of the shank of the pivot pin.