Electric Gun Empty Shooting Prevention Device

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Solution Overview

Problem

Existing electric guns lack an effective mechanism to prevent empty shooting without modifying the mechanical box, as there is no space to incorporate the necessary devices.

Innovation Solution

An empty shooting prevention device is introduced, which includes a switch and a power supply stop portion. The power supply stop portion disconnects the switch when a bullet detection device indicates a lack of bullets, thereby stopping the motor's rotation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a mechanical power supply stopping device is incorporated into the mechanical box to prevent empty shooting, then empty shooting is prevented, but the mechanical box structure must be changed and manufacturing becomes more complex

Engineering Contradiction:
Improveempty shooting preventionVSAvoidmechanical box structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention divides the power supply stopping function into a separate module (power supply stop portion) that can be independently installed on the mechanical box, rather than integrating it into the mechanical box structure itself. This segmentation allows the prevention device to be added without redesigning the entire mechanical box.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The power supply stop portion is extracted as a separate functional component from the mechanical box. The switch disconnecting portion is positioned outside the mechanical box and connected via a connection portion, allowing the main mechanical box structure to remain unchanged while still achieving empty shooting prevention.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If the mechanical box is newly manufactured to accommodate the power supply stopping device, then empty shooting prevention is achieved, but manufacturing cost and time increase

Engineering Contradiction:
Improveempty shooting preventionVSAvoidmechanical box manufacturing
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The power supply stop portion is designed as a pre-assembled module that can be installed on existing mechanical boxes without requiring them to be newly manufactured. The switch disconnecting portion and connection portions are prepared in advance as separate components.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The power supply stop portion is designed with universal applicability to different mechanical box types. The connection portions can be adapted to various mechanical box configurations, allowing the same prevention device to be used across multiple product lines without custom manufacturing.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of manufacture

If existing mechanical boxes are used without modification, then manufacturing cost is reduced, but there is no space to incorporate the power supply stopping device

Engineering Contradiction:
Improvemechanical box manufacturingVSAvoiddevice incorporation capability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The switch disconnecting portion is positioned in a different spatial dimension (outside the mechanical box) rather than trying to fit it inside. The connection portions extend from the mechanical box exterior to the switch disconnecting portion, utilizing external space that is already available on existing mechanical boxes.

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

Solution Approach 2:

The connection portions act as intermediaries that bridge the mechanical box and the switch disconnecting portion. These connection elements allow the power supply stop function to be added to existing mechanical boxes without requiring internal modifications or additional space within the mechanical box.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3686544B1Electrically powered pneumatic gun with empty shooting prevention device
Publication Date: 2025.04.16 TOKYO MARUI
  • EP3686544B1 patent drawingFigure 1
  • EP3686544B1 patent drawingFigure 2
  • EP3686544B1 patent drawingFigure 3

AI summary

[Problem] To provide a device for inhibiting the firing of shells which is capable of stopping the rotation of a motor when a bullet becomes a shell, without changing a conventional mechanical box. [Solution] This device for inhibiting the firing of shells is provided with: a switch which is provided in series with a contact point with which contact is made in order to pass a current through a motor when a trigger is pulled; and a current passage stopping part which receives an operation of a bullet detection device for detecting that a bullet has become a shell, and disconnects the switch to inhibit the passage of current through the motor.