Sliding Door Bracket Mechanism That Locks Height Under Vibration
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Solution Overview
Problem
Existing sliding door mechanisms in vehicles experience loosening of adjustment bolts due to vibrations, leading to changes in the secured height adjustment.
Innovation Solution
A sliding door mechanism with a door bracket and roller bracket connection featuring an axis bushing fixed on a mounting pin, concentric connection openings, and a fixing bolt that alters the distance between fixing plates, preventing rotation and maintaining constant height adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bolt is tightened to secure the height adjustment, then the adjustment is secured, but vibrations cause the bolt to loosen and the adjustment to be altered
Solution Approach 1:
The patent introduces a bushing as an intermediary component between the bolt and the connection openings. The bushing absorbs and distributes the vibrational forces, preventing them from directly affecting the bolt. This intermediary element protects the bolt from loosening while maintaining the height adjustment stability.
Solution Approach 2:
The bushing is installed in advance to cushion against future vibrational forces. By providing this protective layer beforehand, the system prevents bolt loosening before it occurs, rather than attempting to correct it after vibration damage has happened.
2Manufacturing precision
If the bolt is positioned to secure the adjustment, then the height is fixed, but forces perpendicular to the shaft axis force the bolt to be removed
Solution Approach 1:
The bushing serves as a mediator that intercepts forces perpendicular to the shaft axis. Instead of these forces acting directly on the bolt and causing removal, the bushing absorbs and redirects them, preserving both the adjustment precision and bolt integrity.
Solution Approach 2:
The patent converts the harmful perpendicular forces into a beneficial compression effect on the bushing. The bushing deforms elastically under these forces, creating a friction fit that actually enhances the securing of the bolt while maintaining precise height adjustment.
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 mechanism ensures that the height adjustment of the sliding door remains fixed despite vibrations, preventing the bolt from loosening and maintaining the desired position.
Implementation Method 1
the axis bushing is compressed. Therefore, the axis bushing cannot rotate in the connection openings
Implementation Method 2
it comprises at least one fixing bolt positioned in a fixing hole provided on at least one of the said fixing plates and guiding the fixing plates so as to change the distance therebetween
Data Source
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AI summary
A sliding door mechanism (10) having a door bracket (20) and a roller bracket (30), at the part where the said roller bracket (30) and door bracket (20) are connected, an axis bushing (35) fixed rotationally on a mounting pin (34) on the roller bracket (30) and a connection opening (22) on the door bracket (20) into which the said axis bushing (35) is screwed, characterized in that two connection openings (22) are provided concentrically on at least two fixing plates (21) extending substantially in parallel so as to define a plate opening (23) therebetween on the door bracket (20) and it comprises at least one fixing bolt (25) positioned in a fixing hole (24) provided on at least one of the said fixing plates (21) and guiding the fixing plates (21) so as to change the distance therebetween.