Rotatable Oblique Bolt Tip Redirects Force
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Solution Overview
Problem
Existing oblique bolt door locks direct significant external force onto the deadlocking means, particularly during burglary or emergency exit situations, which can lead to increased stress on the locking mechanism.
Innovation Solution
A spring-loaded oblique bolt with a tip part and body part, featuring slanted surfaces and recesses, and a turning piece with a bolt projection and push projection, which redirects external force onto the face plate, reducing the stress on the deadlocking means by guiding it through flexing organs and support pieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional oblique bolt structures are used, then the door lock can function properly with bolt sections that strike against the striker plate, but great force is directed onto the deadlocking means, especially in burglary situations
Solution Approach 1:
The oblique bolt is divided into a body part and a tip part that can rotate relative to each other. The tip part is segmented into upper and lower portions that can independently strike the striker plate. This segmentation allows the force to be distributed and redirected, preventing it from being transmitted directly to the deadlocking means.
Solution Approach 2:
The tip part is made movable relative to the body part through a rotating mechanism. When the door is closed, the tip part can rotate to strike the striker plate at an angle, dynamically redirecting the closing force away from the deadlocking means. This dynamic adjustment allows the bolt to adapt to external forces and protect the deadlocking mechanism.
2Strength
If the oblique bolt is designed to withstand lateral loads, then the locking mechanism becomes more robust, but the deadlocking means experience increased stress
Solution Approach 1:
The rotatable tip part acts as an intermediary between the external lateral loads and the deadlocking means. When lateral forces are applied during door closing, the tip part rotates and absorbs these forces through its movement, preventing them from being transmitted to the deadlocking means. This intermediary mechanism protects the deadlocking system from excessive stress while maintaining lateral load resistance.
3Ease of operation
If the deadlocking means are made lighter and more sensitive, then the locking mechanism becomes easier to operate, but it may become more vulnerable to external forces
Solution Approach 1:
The rotatable tip part provides dynamic protection that allows the deadlocking means to remain light and sensitive for normal operation while automatically activating to protect against external forces. During normal door closing, the tip part rotates smoothly, allowing easy operation. During forced entry attempts, the tip part can rotate to redirect excessive forces, protecting the sensitive deadlocking means.
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 design reduces the force directed onto the deadlocking means, allowing for a lighter and more sensitive locking mechanism that can withstand greater lateral loads and maintain reliability, even in emergency situations, while extending the service life of the lock.
Implementation Method 1
The oblique bolt is spring-loaded towards said extracted position
Implementation Method 2
The flexing organs are supported into the body part of the oblique bolt and are against the support piece
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a door lock (1) provided with an oblique bolt (5). The objective is to decrease the external force directed into to deadlocking organs. The oblique bolt (5) comprises slanted surfaces (10A, 10B) on both sides such that the tip part (5A) is narrower at its tip than in the back part of the tip part. The tip part has recesses (53A, 53B) in its lower part and upper part, which extend from the tip to the back part. Both recesses have a turning piece (31A, 31B). Additionally, the oblique bolt has a support piece (47) and flexing organs (46). The turning pieces guide external force up to a given turning angle via the support piece and flexing organs into the deadlocking organs.