Latching Closure for Hand-Held Setting Tool Magazine

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Solution Overview

Problem

Existing hand-held setting tools face issues with dirt entry and complex magazine attachment due to the pivotable arrangement of the magazine, leading to transport problems and potential component breakage.

Innovation Solution

A setting tool with a latching closure mechanism featuring a snap-in connection between the magazine and housing, which automatically snaps into place for easy attachment and creates a tight seal, along with a pivot bearing allowing the magazine to be pivoted flush without collision, and an elastic slide for enhanced detachment and reattachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the magazine is arranged in a pivotable manner on the housing, then the magazine can be detached and reattached, but dirt can enter the magazine leading to transport problems

Engineering Contradiction:
Improvedetachability of magazineVSAvoiddirt entry into magazine
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

A closure element is introduced as an intermediary component between the magazine opening and the housing. This closure element can be positioned to cover the magazine opening when the magazine is detached, preventing dirt entry while still allowing easy attachment and detachment of the magazine through the pivotable connection

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The closure element acts as a flexible barrier that can move with the magazine during attachment and detachment while maintaining the seal. This flexible closure prevents dirt from entering the magazine opening during transport when the magazine is detached

Inventive Principle:
Principle #30Flexible shells and thin films

2Adaptability or versatility

If the magazine is pivotably attached to the housing, then the magazine can be removed, but the attachment mechanism becomes complicated

Engineering Contradiction:
Improveremovability of magazineVSAvoidattachment mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The attachment mechanism is segmented into distinct functional elements: a pivot connection for rotational movement, a latching mechanism for secure attachment, and a closure element for sealing. This segmentation allows each component to perform its specific function independently, simplifying the overall design while maintaining removability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of complicating the pivotable attachment to achieve secure fastening, the invention uses a simple pivot connection combined with a latch that engages automatically. The complexity is inverted by making the attachment simple (pivot) and adding a separate simple locking mechanism (latch) that engages naturally

Inventive Principle:
Principle #13The other way round (Inversion)

3Object-affected harmful factors

If the magazine is securely attached to prevent dirt entry, then the seal is tight, but the magazine cannot be easily removed in case of accidental drop

Engineering Contradiction:
Improvedirt preventionVSAvoidemergency removal
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The attachment system is designed with dynamic characteristics where the latch can engage automatically during normal operation to provide tight sealing, but can be easily released when needed. The pivotable connection allows natural movement during accidental drops that can automatically disengage the latch, enabling emergency removal without manual intervention

Inventive Principle:
Principle #15Dynamics

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 ensures a secure, dirt-proof magazine attachment that simplifies the attachment process, reduces the risk of component breakage, and allows for easy removal and reattachment, enhancing the tool's operational reliability and user convenience.

Implementation Method 1

acted upon by at least one elastic element, with the slide acted upon by the elastic element in the latching position Magazine pressed against the muzzle

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP2105259B1Setting device
Publication Date: 2011.06.15 HILTI AG
  • EP2105259B1 patent drawingFigure 1
  • EP2105259B1 patent drawingFigure 2
  • EP2105259B1 patent drawingFigure 3

AI summary

The setting device (10) has a propelling body (13) displaceable in a guide (12). A pin guide (15) is arranged in an opening part (14). A connecting unit has latching fastener (30) acting between a magazine (20) and housing (11). The latching fastener has a latch link (33) and a counter latch element (34) which is brought to a latching position (35). The latching fastener presses the magazine against the opening part in the latching position.