Control Box Door Lock Mechanism With Pivoted Shaft Lever
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Solution Overview
Problem
Existing door lock mechanisms for control boxes are complex and costly to manufacture and install, making them difficult to implement effectively for ensuring the safe operation of disconnectors and preventing accidental electric shocks.
Innovation Solution
A simplified door lock mechanism featuring a pre-loaded setting mechanism with a pivoted shaft and levers that engages a locking nose upon door closure, ensuring the disconnector is securely locked until the actuating lever is switched off, using a contour slope and catch mechanism to prevent unintentional opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex setting mechanism is used to ensure the disconnector is locked when the control box door is closed, then the reliability of safety locking is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The setting mechanism is divided into two separate levers: a first lever that directly acts on the locking slide, and a second lever with an actuating bolt that interacts with the locking nose. This segmentation simplifies each individual component while maintaining the overall safety function through coordinated operation of the divided elements.
Solution Approach 2:
The second lever with the actuating bolt performs a preliminary action by engaging the locking nose before the door is fully closed. The approach slope of the locking nose guides the actuating bolt into position in advance, pre-loading the setting mechanism toward the locking position and ensuring safety before final door closure.
2Reliability
If a complex setting mechanism with multiple components is implemented, then the safety function is improved, but the ease of manufacture and installation deteriorates
Solution Approach 1:
The mechanism is segmented into modular components (first lever, second lever, locking nose, actuating bolt) that can be manufactured separately using simple processes and then assembled. This segmentation enables each part to be produced independently with standard manufacturing techniques, improving ease of manufacture and installation.
Solution Approach 2:
Instead of using a complex mechanism that requires precise assembly of multiple moving parts, the invention inverts the approach by using a simple pre-loaded setting mechanism where the locking nose's approach slope automatically guides the actuating bolt into the correct position, eliminating the need for complex alignment procedures during installation.
3Ease of manufacture
If the locking mechanism is simplified to reduce manufacturing cost, then the ease of manufacture is improved, but the reliability of the locking function may deteriorate
Solution Approach 1:
The pre-loaded setting mechanism performs a preliminary action by engaging the locking nose's approach slope before the door is fully closed. This preliminary engagement ensures that the disconnector is locked in advance, maintaining reliability while using a simpler mechanism than previous designs.
Solution Approach 2:
The locking nose's contour slope with approach slope and catch automatically guides the actuating bolt into the correct position and maintains the locked state without requiring additional complex components or adjustment mechanisms. The mechanism serves itself by using the geometric shape of the locking nose to ensure proper engagement and reliability.
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 provides a cost-effective and easy-to-install solution that reliably locks the control box door only when closed, ensuring safety by preventing opening when the disconnector is in the on-position, thus enhancing user safety and simplifying the manufacturing process.
Implementation Method 1
a shaft (2) that is pivoted around a rotation axis (x)
Implementation Method 2
the shaft (2) comprises at a first end a first lever (3) that is coupled with the locking slide (112) of a disconnector (100), and wherein the shaft (2) comprises at a second end (2') opposing the first end a second lever (4) having an actuating bolt (4')}
Implementation Method 3
a setting mechanism (1) that is pre-loaded toward the locking position
Implementation Method 4
a locking nose (5) to be mounted at the inside of a control box door (220) wherein the locking nose (5) comprises starting from its tip an approach slope (9) turning into a catch (10) that turns into a contour slope (11) so that upon closing the control box door (220) the actuating bolt (4') is guided along the contour slope (11)
Data Source
AI summary
A door lock mechanism for actuation of the locking slide of a disconnector on a control box, includes a setting mechanism, that may be disposed between a locking position and a released position and that is pre-loaded toward the locking position, wherein the setting mechanism comprises a shaft that is pivoted around a rotation axis, wherein the shaft comprises at a first end a first lever that may be coupled with the locking slide of a disconnector, and wherein the shaft comprises at a second end opposing the first end a second lever having an actuating bolt so that upon pivoting the second lever the first lever conducts a respective pivoting; and a locking nose to be mounted at the inside of a control box door wherein the locking nose comprises starting from its tip an approach slope turning into a catch that turns into a contour slope so that upon closing the control box door the actuating bolt is guided along the contour slope in direction of the release position and against the pre-load.