Shock-proof Mechanical Magnetic Lock Spring and Cushion Design
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Solution Overview
Problem
Existing shock-proof mechanical magnetic locks have a short service life, poor impact resistance, and security issues due to structural defects, leading to frequent sticking and spring fractures, which affect their reliability and ease of opening.
Innovation Solution
A shock-proof mechanical magnetic lock design that replaces two springs and limiting screws with a single spring between the sleeve and stop ring, incorporates an arc-shaped cushion, and simplifies the assembly to enhance durability and security, allowing the magnet and iron plate to rotate freely, thereby improving impact resistance and reducing the likelihood of internal components getting stuck.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two springs and limiting screws are used in the lock structure, then the lock can provide resetting force and structural support, but the service life is short and springs are prone to fracture
Solution Approach 1:
The patent combines the functions of two separate springs and limiting screws into a single spring mechanism. The first spring is positioned to directly contact the first electric component, eliminating the need for limiting screws while providing both resetting force and structural support. This reduction in component count decreases the probability of failure and simplifies the overall structure.
Solution Approach 2:
The patent removes the limiting screws from the structure, extracting the unnecessary constraint elements. The first spring is designed to provide both the resetting force and the structural support that previously required separate limiting screws, thereby eliminating potential failure points and improving service life.
2Strength
If a rectangular cushion is used on the bottom connecting piece, then the structure is simple, but the impact resistance is poor and the door rotation is insufficient
Solution Approach 1:
The patent replaces the rectangular cushion with a spherical cushion on the bottom connecting piece. The spherical shape allows for multi-directional rotation and better absorption of impact forces from various angles. This curvature enables the door to rotate freely in multiple directions while maintaining simple structural implementation.
Solution Approach 2:
The spherical cushion introduces dynamic adaptability to the structure, allowing it to respond to forces from any direction. Unlike the fixed rectangular cushion, the spherical form enables continuous rotation and adjustment, providing superior impact resistance and door rotation capability.
3Ease of manufacture
If the sleeve has a simple opening structure, then the assembly cost is reduced and manufacturing is simplified, but dust can enter the internal cavity causing components to stick
Solution Approach 1:
The patent employs a flexible sealing ring that contacts the pull plug to create a dust-tight seal. This thin film barrier prevents dust from entering the internal cavity while maintaining the simple opening structure. The sealing ring is easily installed and does not significantly increase manufacturing complexity.
Solution Approach 2:
The sealing ring acts as an intermediary element between the simple opening structure and the internal cavity. It mediates the conflict by providing dust protection without requiring a complex closed structure, thus maintaining ease of manufacture while improving reliability.
4Manufacturing precision
If the stop ring has a uniform diameter, then the manufacturing is simple, but the locking mechanism cannot properly adjust the aperture of the sleeve internal cavity
Solution Approach 1:
The patent introduces asymmetry into the stop ring by creating a stepped structure with different diameters at different positions. This asymmetric design enables the stop ring to properly adjust the aperture of the sleeve internal cavity at different stages, while the stepped form remains relatively simple to manufacture using standard machining processes.
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 new design significantly increases the service life from 80-120 thousand to 500 thousand times, enhances impact resistance from 120J to 160J, prevents dust entry, reduces assembly costs, and improves security by ensuring the door is not easily opened, addressing the structural defects of the prior art.
Implementation Method 1
a spring between the sleeve and stop ring
Implementation Method 2
the magnetic field generated by the magnet 121 attracts the iron plate 111
Implementation Method 3
incorporates an arc-shaped cushion, and simplifies the assembly to enhance durability and security, allowing the magnet and iron plate to rotate freely, thereby improving impact resistance
Data Source
Figure 1~2
Figure 3~4
AI summary
The present invention relates to a shock-proof mechanical magnetic lock, comprising an iron plate (211) located on one side, a pull plug (212) vertically protruding from the iron plate (211), a magnet (221) located on the other side, a sleeve (222) located in the magnet (221) and having a top opening for inserting the pull plug (212), and a stop ring (223) sleeved outside the sleeve (222), the stop ring (223) is fixed on the magnet (221), the bottom of the sleeve (222) is installed on a substrate (226) below the magnet (221) via a bottom connecting piece (227), the magnet (221) and the stop ring (223) can axially move relative to the sleeve (222), and the sleeve (222) and the stop ring (223) are provided with a spring (229) thereof. The improved structure has the following advantages: improving the service life, security and impact resistance of the lock; reducing the cost of processing and assembly; the opening structure at top of the sleeve reducing the probability of the internal balls stuck.