Door Rod Lock Centering Bevels for Sag Compensation
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Solution Overview
Problem
Existing rod locks fail to compensate for door sag effectively, especially in situations where doors are switched from left-hinged to right-hinged, requiring complex manual adjustments or dismantling and repositioning of centering structures.
Innovation Solution
A rod lock with a centering device featuring two centering bevels on the lock holder and rod guide, allowing for easy compensation of door sag without needing repositioning when changing hinge configurations, by using one bevel for left-hinged doors and the other for right-hinged doors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a centering structure is provided to automatically center the door leaf and compensate for door sag, then the ease of operation is improved, but the device complexity increases when considering the need for dismantling and repositioning for different hinge configurations
Solution Approach 1:
The centering device is designed with two centering bevels that can serve different hinge configurations (left-hinged and right-hinged doors) using the same physical component. The lock holder and rod guide are configured such that one centering bevel is used for left-hinged doors and the other for right-hinged doors, eliminating the need to dismantle and reposition the centering structure when changing hinge configurations.
2Manufacturing precision
If mechanical adjusting devices are provided to compensate for door sag, then the manufacturing precision is improved, but the device complexity increases and manual adjustment is required
Solution Approach 1:
The centering device with two centering bevels automatically compensates for door sag without requiring manual adjustment. The system self-adjusts to the correct alignment position when the door is closed, eliminating the need for complex mechanical adjusting devices that require manual intervention.
3Adaptability or versatility
If the lock holder and rod guide are configured with two centering bevels for different hinge configurations, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The lock holder and rod guide are designed as universal components that can accommodate both left-hinged and right-hinged door configurations. The two centering bevels are integrated into these components, allowing the same physical structure to serve multiple functions depending on which bevel is engaged, thereby improving adaptability without proportionally increasing complexity.
Data Source
AI summary
A rod lock for locking a door leaf on a door frame with at least one rod which can be arranged on the door leaf side and which is movable between a locking position in which the rod is locked to a lock holder which can be arranged on the door frame side, and an open position in which the rod is released from the lock holder. The movement of the rod is guided via a rod guide which can be arranged on the door leaf side. The lock holder and the rod guide have a centering device with two centering bevels for aligning the closed door leaf relative to the door frame, one of which can be used for doors hinged on the left and one of which can be used for doors hinged on the right.