Vehicle Sliding Door Locking Device with Hook and Swing Arm
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Solution Overview
Problem
Existing locking devices for vehicle sliding doors fail to securely lock and smoothly release the sliding doors and their rails, leading to difficulties in maintaining stability during opening and smooth operation in the longitudinal direction of the vehicle.
Innovation Solution
A locking device comprising a rail, a central support structure, and a hook mechanism that allows the vehicle sliding door to pivot outward and then release smoothly back and forth, utilizing rollers, swing arms, and elastic springs to securely lock and unlock the door and rail, enabling stable support during opening and easy sliding motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a locking device is designed to securely lock the sliding door to the vehicle body, then the door stability during opening is improved, but the complexity of the locking mechanism increases
Solution Approach 1:
The locking device is divided into distinct functional components: a locking protrusion on the rail that engages with a locking recess in the central support structure, and a separate release mechanism. This segmentation allows the locking function to be achieved through simple geometric engagement rather than a complex integrated mechanism, thereby improving door stability while controlling mechanism complexity.
Solution Approach 2:
The patent introduces a release mechanism that acts as an intermediary to control the engagement and disengagement of the locking protrusion and recess. This intermediary component simplifies the overall operation by providing a dedicated interface for locking and releasing, rather than requiring direct manipulation of the locking surfaces themselves.
2Reliability
If the locking structure is designed to firmly secure the door, then the reliability of door support is improved, but the ease of operation for releasing and sliding the door deteriorates
Solution Approach 1:
The locking mechanism transitions from a static locked state to a dynamic released state through the swing arm's rotational movement. The swing arm pivots between a locked position (where it engages the locking protrusion) and a released position (where it disengages), allowing the system to dynamically adapt between firm securing and easy release operations.
Solution Approach 2:
The release mechanism is pre-positioned to automatically engage the locking protrusion when the door is closed, ensuring reliable locking without requiring additional action from the user. The swing arm is preliminarily configured to swing into the locked position, so the door is secured automatically upon closure, and releasing simply requires reversing the swing motion.
3Ease of operation
If the rail and central support structure are designed to allow smooth pivoting motion, then the ease of operation is improved, but the stability of the door during opening deteriorates
Solution Approach 1:
The motion path is segmented into distinct phases: a pivoting phase for opening/closing and a locked phase for stability. The locking protrusion and recess are positioned to engage at specific points in the motion trajectory, allowing smooth pivoting during the opening/closing phase while providing stable engagement during the locked phase, thus resolving the contradiction between motion smoothness and stability.
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
The device ensures the vehicle sliding door is stably supported during opening and can be easily slid back and forth in the longitudinal direction, facilitating smooth pivoting and sliding movements, enhancing operational efficiency.
Implementation Method 1
the swing arm is pivoted. The hook is pressed and rotated by the swing arm such that the mutual restraint of the central slider and the central rail is released
Implementation Method 2
An elastic spring may be disposed between the vehicle body mounting bracket and the swing arm, the elastic spring returning the swing arm to a swing arm original position after the swing arm has been pivoted
Implementation Method 3
rollers rotatably installed in the slider body and configured to roll along the upper lower guide rail or the lower guide rail
Data Source
AI summary
A locking device for a vehicle sliding door comprises a rail mounted on the vehicle sliding door; a central support structure coupled to the rail and mounted on the vehicle body and configured to connect the vehicle sliding door to the vehicle body and to allow the vehicle sliding door to pivot and slide; and a hook disposed on the central support structure and configured to lock the central support structure with respect to the rail according to a movement of the vehicle sliding door.