Antitheft Hand Tool Display Assembly with Spring-Locked Press Member

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Solution Overview

Problem

Conventional tool display assemblies lack a burglarproof function, allowing hand tools to be easily removed and stolen during exhibition.

Innovation Solution

An antitheft display assembly featuring a support member with a track, hanging members, press members with compression springs, and a limit member that secures hand tools by locking them into retaining grooves, preventing external forces from detaching them.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If hand tools are mounted on hanging members in a conventional display assembly, then the tools are easily accessible and visible to consumers, but the tools can be easily removed and stolen

Engineering Contradiction:
ImproveAccessibility of hand toolsVSAvoidSecurity against theft
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The press member is designed to be movable under compression, allowing it to shift between locked and unlocked positions. The compression spring enables dynamic movement while maintaining secure locking when compressed, resolving the contradiction between easy access and security by making the locking mechanism dynamically adaptable to user interaction forces

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the force parameter required to remove the tool. Normally, the tool requires significant force to overcome the compression spring and release the locking block, but when the correct pressing force is applied to the press portion, the spring compresses and releases the lock, allowing easy removal only under specific controlled conditions

Inventive Principle:
Principle #35Parameter changes

2Reliability

If a locking mechanism is added to prevent tool removal, then security is improved, but the complexity of the display assembly increases

Engineering Contradiction:
ImproveSecurity against theftVSAvoidStructure of display assembly
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking mechanism is merged with the existing hanging member structure. The press member integrates multiple functions (locking, pressing, spring mounting) into a single component that attaches to the existing track system, adding security without requiring a completely new complex structure

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The locking block is nested within the slot structure of the hand tool, and the press member is nested within the hanging member assembly. The compression spring is housed within the press member structure, creating a compact nested arrangement that adds functionality while minimizing overall structural complexity

Inventive Principle:
Principle #7Nested doll (Nesting)

3Reliability

If the press member is made secure to prevent theft, then burglarproof function is achieved, but the ease of tool removal for legitimate users is reduced

Engineering Contradiction:
ImproveBurglarproof functionVSAvoidTool removal ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The press portion acts as an intermediary element between the user and the locking mechanism. By applying force to this intermediate press portion, the compression spring is activated, which in turn moves the locking block to release the tool, providing an easy user interface that mediates between the user's action and the security mechanism

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The compression spring automatically returns the press member to its locked position after the pressing force is released, without requiring any additional user action. The system self-locks after each tool removal, maintaining security automatically through the spring's elastic recovery

Inventive Principle:
Principle #25Self-service

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 assembly effectively secures hand tools in place, preventing theft by isolating the press member and locking the tool into place, while allowing easy removal and reattachment for user convenience.

Implementation Method 1

at least one compression spring biased between the at least one press member and the at least one hanging member

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS10737858B1Antitheft display assembly for hand tool
Publication Date: 2020.08.11 HSU HUANG TUNG
  • US10737858B1 patent drawing
  • US10737858B1 patent drawing
  • US10737858B1 patent drawing

AI summary

An antitheft display assembly includes a support member, at least one hanging member mounted on the support member, at least one press member mounted on the at least one hanging member, at least one hand tool mounted on the at least one hanging member and locked by the at least one press member, and a limit member mounted on the support member. Thus, the at least one press member is isolated by the limit member and cannot be operated by anyone, while the locking block of the at least one press member is locked in one retaining groove of the at least one hand tool, such that the at least one hand tool is not detached from the at least one hanging member by pulling, thereby achieving an antitheft function.