Door Lock Push Rod with Toggle Lever and Electromagnet
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door lock actuation devices have complex structures that require significant space and are costly to manufacture, with known push rods for escape doors and panic doors being inefficient in terms of space usage and simplicity.
Innovation Solution
A push rod design featuring a toggle lever coupling between the base and cover profiles, where the cover profile is fixed near its initial position using an electromagnet acting on the toggle joint, allowing for a structurally simple and stable coupling with reduced space requirements and high compressive force resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex locking mechanism with pivot arms or electromagnets is used to secure the door lock, then the door lock can be reliably blocked, but the device becomes space-consuming and costly to manufacture
Solution Approach 1:
The patent extracts the essential function of blocking the cover profile from a complex locking mechanism and implements it through a simplified design: a stop element that directly contacts the cover profile and an electromagnet that acts on a knee joint of the toggle lever. This separates the blocking function from complex mechanical linkages, achieving reliable door lock security with reduced device complexity
Solution Approach 2:
The patent replaces complex mechanical locking mechanisms (such as those described in EP 2 348 172 A2 and DE 10 2013 000 285 A1) with an electromechanical system where an electromagnet acts on a knee joint to control a stop element. This substitution reduces mechanical complexity while maintaining blocking reliability through electromagnetic actuation
2Stability of the object's composition
If a linear guide is used to connect the base profile and cover profile, then the connection is stable, but the footprint becomes large
Solution Approach 1:
Instead of using a linear guide that constrains motion through extended mechanical structures, the patent inverts the approach by using a toggle lever with a knee joint that achieves stable connection through geometric configuration. The stop element provides direct contact for stability, while the compact knee joint mechanism minimizes the footprint of the push rod
3Force
If a high holding force electromagnet is used to secure the knee joint, then the compressive force resistance is high, but the device becomes more complex and expensive
Solution Approach 1:
The patent utilizes the dynamic characteristics of the knee joint in the toggle lever mechanism. By positioning the electromagnet to act on the knee joint rather than requiring direct high-force holding, the system leverages the mechanical advantage and geometric configuration of the toggle lever to amplify the electromagnet's holding force, achieving high compressive force resistance with a simpler, lower-force electromagnet
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
The solution provides a reliable, space-efficient, and cost-effective means to hold the door lock in place, capable of withstanding high compressive forces with a low electromagnet holding force, suitable for actuating a door latch with a compact and stable design.
Implementation Method 1
The cover profile (20) can be locked in or near its initial position (22) by means of an electromagnet (30) acting on the knee joint (26)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A push rod (10) for actuating a door lock of a door (12), comprising a base profile (18) for attachment to the door (12) and a cover profile (20) which is displaceable relative to the base profile (18) and serves as an actuating element for the door lock and which is displaceable between an unactuated initial position (22) and a fully actuated end position (24), is designed and further developed with regard to a reliable detection of the door lock using simple structural means such that the cover profile (20) and the base profile (18) are coupled by means of a toggle lever (28) having a knee joint (26) and that the cover profile (20) can be locked in or near its initial position (22) by means of an electromagnet (30) acting on the knee joint (26).