Baler Door Latching Mechanism for Fail-Safe Closure Interruption
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Solution Overview
Problem
Existing balers pose a safety risk as the upper door can accidentally close, potentially catching a user's hand, especially when the door movement mechanism fails.
Innovation Solution
A baler equipped with a safety system that includes a safety arm connected to the door movement means, latching means that can move between allowing and preventing door movement, and equilibrium means that engages the latching means to prevent door closure when the door movement means is interrupted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock is provided to prevent accidental door closure, then safety is improved, but the device complexity increases and operation becomes cumbersome
Solution Approach 1:
The patent extracts the safety function from a complex lock mechanism and implements it through a simple latch that engages with a cam. The latch is spring-loaded to automatically engage when the door moves away from the vertical position, eliminating the need for complex locking mechanisms while maintaining safety.
Solution Approach 2:
The safety mechanism is self-activating through the door's own movement. When the door is moved away from the vertical position (either open or closing), the cam rotates and automatically engages the latch through spring force, without requiring external control or complex actuation systems.
2Reliability
If a lock is provided to prevent accidental door closure, then safety is improved, but ease of operation deteriorates
Solution Approach 1:
The safety mechanism operates automatically based on door position. The spring-loaded latch engages when the cam rotates due to door movement, and disengages automatically when the door returns to the vertical position, eliminating the need for manual locking or unlocking operations.
Solution Approach 2:
The safety mechanism transitions from a static lock to a dynamic system that responds to door movement. The cam converts the door's vertical movement into rotational motion that automatically actuates the latch, making the safety function responsive to operational conditions without requiring separate control actions.
3Ease of operation
If the door can be opened manually or automatically, then ease of operation is improved, but safety risk increases due to potential accidental closure
Solution Approach 1:
The patent applies preliminary anti-action by providing a safety mechanism that prevents harmful door closure before it can occur. The latch is positioned to engage the cam during the closing motion, stopping the door before it can reach the fully closed position where it might trap fingers.
Solution Approach 2:
The safety mechanism provides mechanical feedback through the cam-latch interaction. The cam's position continuously reflects the door's position, and when the door moves away from vertical (either opening or closing), the cam rotates to engage the latch, providing immediate mechanical feedback that prevents unsafe closure.
Data Source
AI summary
Disclosed is a baler for making bales of a waste material. The baler comprises a compaction compartment, a door, door movement means, and a frame part. The frame part comprises at least one receiving means. The baler comprises a safety system. The safety system comprises a safety arm configured to be connected to the door movement means, latching means connected to the safety arm and configured for moving between a first position allowing the door to move and a second position preventing the door from moving by engaging into the at least one receiving means, and equilibrium means connected to the safety arm and configured for moving the latching means from the first position to the second position when the door movement means is interrupted.