Container Shutter Locking Mechanism with Auxiliary Pin
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Solution Overview
Problem
Existing devices for locking and unlocking the blind of a container inserted into and pulled out of a frame face challenges in precise mechanical operation due to mechanical tolerances and imprecise movements, leading to interference between locking and cam mechanisms, which complicates the automatic unlocking and locking process.
Innovation Solution
A device with two locking elements, where the first locking element unlocks the blind when it reaches its closed position and the second locking element acts as an auxiliary element to maintain the blind in the closed position until it is reliably unlocked or locked, using cam bars on opposite longitudinal sides of the container to ensure precise alignment and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single locking element is used for the blind, then the structure is simple, but reliable locking and unlocking cannot be ensured due to mechanical tolerances and imprecise movement
Solution Approach 1:
The locking mechanism is divided into two distinct locking elements (first locking element and second locking element) that operate independently but cooperatively. The first locking element handles the primary locking function while the second locking element provides auxiliary support and prevents premature disengagement. This segmentation allows each element to be optimized for its specific function, improving overall reliability without requiring a single complex locking mechanism.
2Ease of operation
If the blind is unlocked just before cam engagement to ensure reliable opening, then the blind opens reliably, but mechanical tolerances cause the engagement point to shift, leading to interference between locking and cam mechanisms
Solution Approach 1:
The first locking element is designed to disengage from the blind before the cam mechanism engages, and the second locking element maintains support during the transition. This preliminary action sequence ensures that the blind is ready to be opened by the cam without interference from the locking mechanism, while the staged disengagement compensates for variations in engagement timing caused by mechanical tolerances.
Solution Approach 2:
The second locking element acts as an intermediary between the first locking element and the cam mechanism. It maintains support for the blind during the transition period when the first locking element disengages and the cam engagement occurs, preventing premature disengagement and ensuring smooth operation despite variations in timing caused by mechanical tolerances.
3Device complexity
If purely mechanical means are used for locking and unlocking, then electronic circuits and electromechanical switching elements are eliminated, but precise coordination between locking elements and cam mechanism is difficult to achieve
Solution Approach 1:
The locking elements are designed with spring-loaded or gravity-assisted mechanisms that automatically adjust their engagement and disengagement timing based on the movement of the container and blind. This dynamic behavior allows the purely mechanical system to adapt to variations in movement speed and position, achieving precise coordination without electronic control. The first locking element disengages at the appropriate moment while the second maintains support, creating a self-regulating mechanical coordination system.
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
This solution allows for reliable, purely mechanical locking and unlocking of the blind, preventing interference between locking and cam mechanisms, ensuring accurate assignment of functions and enhanced security by locking/unlocking on both longitudinal edges, thus eliminating the need for electronic circuits and electromechanical switching elements.
Implementation Method 1
cam elements that actuate them are assigned to one another on the frame
Data Source
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AI summary
The invention relates to a device for locking and unlocking the jalousie (12, 15) of a container (10) which can be introduced into a frame (11) and can be withdrawn therefrom. The jalousie (12, 15) is displaced by a stationary journal (14) engaging therewith when introducing the container (10), said jalousie being displaced when withdrawing the container (10) from the frame (11) with the same engagement of the journal (14). In the closed position, the jalousie (12, 15) can be locked in a reliable and precise manner. Two locking pins (21, 22) that can be actuated by means of cam bars (35, 36) extending in the longitudinal direction of the frame are provided on the frame (11). The first locking pin (21) is used to lock the jalousie (12, 15), the second locking pin (22) holds the jalousie (12, 15) during locking by the first locking pin (21) in the precisely defined closing position. As a result, erroneous positions of the jalousie (12, 15) are prevented when locking and unlocking.