Compression Lock Roto-Translatory Bolt Mechanism
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Solution Overview
Problem
Conventional door and hatch closing devices for motor vehicles, such as vans and motorhomes, require complex rotational movements to close and fasten, which can be cumbersome and protrude from the wall profile, lacking simplicity and practicality.
Innovation Solution
A snap-closing device with a handle block and rotor mechanism that converts a simple continuous rotary motion into a compound roto-translatory motion, allowing for easy closing and fastening without protruding from the wall, using a bolt that rotates and translates to engage with the door frame, and optionally drives remote locking blocks through rods for multiple locking points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional screw lock mechanism is used, then the door can be closed and fastened, but the device protrudes from the wall profile and requires complex rotational movements
Solution Approach 1:
The patent combines the closing and fastening functions into a single integrated mechanism. The compression bolt simultaneously performs both closing (by moving toward the door) and fastening (by engaging the locking surface), eliminating the need for separate operational steps required by conventional screw locks.
Solution Approach 2:
The compression bolt is nested within the door structure, allowing it to move axially within the door thickness rather than protruding outward. This nesting approach enables the locking mechanism to be contained within the door profile while still providing effective closing and fastening functions.
2Reliability
If a conventional screw lock mechanism is used, then the door can be closed and fastened, but the device protrudes from the wall profile
Solution Approach 1:
The compression bolt is nested within the door structure, allowing it to move axially within the door thickness rather than protruding outward. This nesting approach enables the locking mechanism to be contained within the door profile while still providing effective closing and fastening functions.
Solution Approach 2:
The invention transitions from a conventional outward-protruding locking mechanism to an axial movement system that operates within the third dimension (door thickness). The compression bolt moves along the axial direction perpendicular to the door surface, utilizing the available space within the door structure rather than extending outward.
3Reliability
If a handle rotation of 180 degrees is required to close and fasten the door, then the locking function is achieved, but the operation becomes cumbersome
Solution Approach 1:
The patent combines the closing and fastening functions into a single integrated mechanism. The compression bolt simultaneously performs both closing (by moving toward the door) and fastening (by engaging the locking surface), eliminating the need for separate operational steps required by conventional screw locks.
Solution Approach 2:
The compression bolt serves multiple functions: it acts as both the closing element (by moving axially toward the door) and the fastening element (by engaging the locking surface). This multi-functionality is achieved through a single component rather than separate mechanisms, simplifying the overall operation.
Data Source
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Figure 3a~3e
AI summary
A lock, in particular for motor vehicles such as vans, caravans, motorhomes, and the like, is designed to close a door, a tailgate, a hatch, by compression, using a handle rotation of less than 180°. The lock acts to convert the rotation of the handle on a plane parallel to the plane of the door into a roto-translatory motion of the bolt which performs the locking and fastening operations.