Door Lock Cable Mechanism Eliminates Slotted Hole Installation
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Solution Overview
Problem
Existing mechanical door locks with escape release mechanisms require a slotted hole in the door for installation, which is inconvenient and increases installation work.
Innovation Solution
A door lock design that uses a movable mechanical bolt with a cable system and magnetic holding mechanism, allowing the bolt to be operated via a pull handle without the need for a slotted hole, utilizing a single drilled hole for installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional escape release mechanism is installed on a mechanical bolt, then the door can be opened from the inside for safety purposes, but a slotted hole must be cut into the door which increases installation work and complexity
Solution Approach 1:
The patent replaces the traditional mechanical slot-cutting mechanism with a magnetic field-based retention system. Instead of requiring a physical slot to accommodate the escape release mechanism, the invention uses magnetic forces to retain the slide in the mounting plate, allowing installation through a simple round hole without complex mechanical interlocking structures.
Solution Approach 2:
The invention changes the retention mechanism from mechanical (physical slots and guides) to magnetic (magnetic field interaction). This parameter change allows the same functional outcome (retaining the slide) to be achieved with a simpler installation process, transforming the installation requirement from cutting a slot to drilling a round hole.
2Ease of operation
If a slotted hole is cut into the door for escape release installation, then the emergency opening function is achieved, but the door structure is compromised and installation time increases
Solution Approach 1:
The patent substitutes the time-consuming slot-cutting operation with a quick magnetic retention system. The slide is retained by magnetic forces rather than mechanical fitting into a slot, reducing installation time while maintaining the emergency opening function.
3Device complexity
If a simple rigid handle is used for escape release, then the mechanism is simple, but a slot must be cut into the door which is additional work
Solution Approach 1:
The patent replaces the need for a slot (complex door modification) with a magnetic retention system that works through a simple round hole. This substitution maintains the simplicity of the handle mechanism while eliminating the need for complex door modifications.
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
Simplifies the installation process by eliminating the need for a slotted hole, reducing installation work and costs, while ensuring reliable operation and safety through magnetic retention of the slide mechanism.
Implementation Method 1
The mounting plate has a magnet and the slide is ferromagnetic or has a magnet, so that the slide is held on the magnet by means of magnetic forces
Data Source
Figure 1a~1b
Figure 1c
Figure 2~3
AI summary
Door lock (14) with a movable mechanical bolt (1) and a first handle (19) connected to the bolt (1) on an outside (15) of a door (17), with which the mechanical bolt (1) is movable on a mounting plate (3), and a receiving part (2) with a guide for the bolt on a frame (18) of the door (17), with a second handle (20) on the inside (16) of the door (17), with which the mechanical bolt (1) is movable, wherein the mechanical bolt (1) is movable through the second handle (20) via a wire rope (7), wherein the second handle (20) is a pull handle (9).