Door Lock Latch Bolt Barrier Plate for Multi-Angle Fixing
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Solution Overview
Problem
Existing door lock mechanisms fail to securely fix a door at multiple angles, leading to issues such as the door rotating freely or closing violently when external forces are applied, and they do not allow for adjustable opening angles.
Innovation Solution
A mechanism comprising a latch bolt barrier plate and a rotating and fixing device that allows the latch bolt barrier plate to be rotated to a preset angle and fixed, providing multiple through holes for the latch bolt to secure the door at various angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic device is used to lock the door to the wall when the door is opened, then the door can be prevented from turning freely, but the door can only be left wide open and the opening angle cannot be adjusted
Solution Approach 1:
The barrier plate is divided into multiple segments with through holes at different positions, allowing the latch bolt to engage at various angles. This segmentation enables the door to be fixed at multiple predetermined opening angles, resolving the contradiction between door stability and angle adjustability.
Solution Approach 2:
The barrier plate is designed to rotate along with the door's movement, dynamically adjusting its position. The swing arm mechanism allows the barrier plate to move from an initial position to different angular positions, enabling the door to be fixed at multiple angles while maintaining stability through the limiting block engagement.
2Adaptability or versatility
If the door is allowed to open freely, then the opening angle can be adjusted, but the door may rotate freely under external forces or close violently
Solution Approach 1:
The limiting block is pre-positioned on the rotation path of the swing arm to engage with the barrier plate at specific angles. This preliminary positioning ensures that when the door reaches predetermined angles, it is automatically constrained, preventing free rotation and violent closure while still allowing angle adjustment.
Solution Approach 2:
The swing arm acts as an intermediary mechanism between the door and the limiting block. It transfers the door's rotational movement and enables controlled engagement with the limiting block, providing both angle adjustability and stability through the mediating swing arm mechanism.
3Adaptability or versatility
If a latch bolt barrier plate rotating and fixing device is added to fix the barrier plate at preset angles, then the door can be fixed at multiple angles, but the device complexity increases
Solution Approach 1:
The rotating and fixing functions are merged into a single integrated device. The swing arm both rotates with the door and provides the fixing mechanism through engagement with the limiting block, eliminating the need for separate rotating mechanism and fixing device, thus reducing overall complexity while achieving multiple angle fixing.
Solution Approach 2:
The swing arm mechanism is designed to automatically engage with the limiting block when the door reaches preset angles, without requiring additional actuators or complex control systems. The gravity and door movement itself drive the engagement, making the device self-operating and reducing complexity.
Data Source
AI summary
The present disclosure discloses a mechanism capable of fixing a door at multiple angles and a door lock. The mechanism includes at least a latch bolt barrier plate and a latch bolt barrier plate rotating and fixing device. The latch bolt barrier plate is provided with a plurality of through holes matching the shape of a latch bolt. The latch bolt barrier plate rotating and fixing device is provided on a wall away from a door hinge, and when the latch bolt barrier plate is rotated to a preset angle, the latch bolt barrier plate rotating and fixing device fixes the latch bolt barrier plate.