Multi-Channel Fastener Magazine for Reduced Replenishment Stops

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Solution Overview

Problem

Existing fastening tools have magazines that can only hold a small number of fasteners, requiring frequent replenishment, leading to low working efficiency and inconvenience.

Innovation Solution

A fastening tool with a magazine featuring at least two movable channels and a movable assembly that allows for the accommodation of a larger number of fasteners, including a separator and locking assemblies to manage the channels, enabling quick and convenient use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the magazine holds only a small number of fasteners, then the structure remains simple, but frequent replenishment is required leading to low working efficiency

Engineering Contradiction:
Improveworking efficiencyVSAvoidmagazine structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The magazine is divided into multiple movable channels (first movable channel, second movable channel, third movable channel) that can independently store and feed fasteners. This segmentation allows the magazine to hold a large number of fasteners while maintaining organized, manageable sections, thereby improving productivity without excessive complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a movable assembly that can shift between different positions to connect different channels to the input port. This adds a spatial dimension to the fastener feeding system, allowing multiple channels to be served sequentially without increasing the linear length of the magazine excessively, thus improving capacity while controlling structural complexity

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of time

If the magazine holds a larger number of fasteners, then replenishment frequency decreases, but the magazine length increases

Engineering Contradiction:
Improvereplenishment timeVSAvoidmagazine length
Core Design Contradiction:
Loss of timeVSLength of stationary object

Solution Approach 1:

By introducing the movable assembly that shifts between positions, the patent utilizes spatial reconfiguration rather than simply extending the magazine length linearly. The movable channels and separator allow multiple fasteners to be stored in a compact arrangement that can be accessed sequentially, reducing replenishment time without proportionally increasing magazine length

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The movable channels are arranged in an overlapping configuration where the second movable channel is positioned between the first and third channels. This nested-like arrangement allows efficient use of space, accommodating multiple channels within a compact volume, thereby increasing fastener capacity without linearly increasing the overall magazine length

Inventive Principle:
Principle #7Nested doll (Nesting)

3Quantity of substance

If multiple movable channels are introduced, then fastener capacity increases, but the device complexity increases

Engineering Contradiction:
Improvefastener capacityVSAvoidchannel management complexity
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent employs a movable assembly with locking mechanisms that can dynamically switch between different positions to connect different channels to the input port. This dynamic configuration allows the system to manage multiple channels systematically, increasing fastener capacity while the locking mechanisms provide controlled, manageable complexity rather than chaotic complexity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Each movable channel is equipped with its own lifting member and the separator divides the channels into distinct sections. This segmentation allows each channel to be managed independently, reducing the overall complexity of managing multiple channels simultaneously. The separator with locking assemblies provides organized control over the multiple channels, making the system manageable

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4691697A1Fastening tool and magazine
Publication Date: 2026.02.11 NANJING CHERVON IND
  • EP4691697A1 patent drawingFigure 1
  • EP4691697A1 patent drawingFigure 2~4
  • EP4691697A1 patent drawingFigure 5

AI summary

Provided is a fastening tool. The fastening tool includes: a striking assembly including a striker configured to strike a fastener; a transmission assembly configured to drive the striker to move; a housing for supporting the transmission assembly; a motor at least partially disposed in the housing; and a magazine for accommodating fasteners. The magazine includes at least two movable channels in which at least some fasteners move. The fastening tool is easy to use and has high working efficiency.