Magnetic Sliding Element for Telescopic Device Attachment

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Solution Overview

Problem

Existing telescopic devices, such as crane booms and support legs, face challenges in easily and reliably attaching and detaching sliding elements due to wear and tear, often requiring additional fastening members like screws or pins.

Innovation Solution

A sliding element with a plate-shaped body and embedded permanent magnets that securely attach to a telescopic part without additional fastening members, allowing for rapid and simple mounting and removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If fastening members like screws, pins or plugs are used to secure sliding elements to telescopic parts, then the sliding element is reliably attached to the telescopic part, but the mounting and removal process becomes time-consuming and complex

Engineering Contradiction:

Improveattachment reliabilityVSAvoidmounting and removal time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical fastening system (screws, pins, or plugs) with a magnetic field-based attachment system. Permanent magnets embedded in the sliding element create magnetic attraction forces that securely hold the sliding element against the telescopic part without requiring mechanical fasteners. This substitution eliminates the need for threading, drilling, or inserting fastening members, thereby dramatically reducing mounting and removal time while maintaining reliable attachment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and eliminates the fastening members (screws, pins, plugs) from the attachment system. By removing these additional components entirely and relying solely on magnetic attraction, the system achieves both reliable attachment and rapid removal. The sliding element can be simply attached by bringing it near the telescopic part and removed by overcoming the magnetic force, without any fastening members to install or remove.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If multiple fastening members are used to secure the sliding element, then the attachment becomes more reliable, but the device complexity and number of parts increases

Engineering Contradiction:

Improveattachment reliabilityVSAvoidnumber of fastening members

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the attachment function into a single integrated system using permanent magnets. Instead of requiring multiple separate fastening members (screws, pins, and plugs), the magnetic field provides a unified attachment mechanism that distributes holding force across the sliding element's surface. This consolidation reduces the number of parts while maintaining or even improving attachment reliability through distributed magnetic attraction.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces the entire mechanical fastening system with a magnetic field-based system. The permanent magnets generate magnetic flux that creates attraction forces between the sliding element and the telescopic part, eliminating the need for any mechanical fastening members. This substitution dramatically simplifies the device structure while providing reliable attachment through the magnetic field.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Enables reliable attachment and easy replacement of sliding elements in telescopic devices without the need for screws, pins, or plugs, enhancing maintenance efficiency and reducing wear-related issues.

Implementation Method 1

at least one permanent magnet which is fixed to the plate-shaped body, wherein the permanent magnet is configured to be magnetically attracted to the first telescopic part in order to keep the sliding element attached to the first telescopic part

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentEP3312130B1Sliding element and telescopic device comprising such a sliding element

Publication Date: 2019.12.04 CARGOTEC PATENTER AB

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AI summary

Sliding element (1) intended to be mounted to a first telescopic part (20) of a telescopic device. The sliding element comprises a plate-shaped body (2) with a first side (4a), through which the sliding element is intended to rest against a support surface (21) on the first telescopic part (20), and an opposite second side (4b), which constitutes a sliding surface intended for sliding contact with a second telescopic part (30) of the telescopic device. The sliding element comprises at least one permanent magnet (6) which is fixed to the plate-shaped body, wherein the permanent magnet is configured to be magnetically attracted to the first telescopic part in order to keep the sliding element attached to the first telescopic part. The invention also relates to a telescopic device comprising such a sliding element.