Magazine-Nose Elastic Coupling for Rattle and Impact Absorption

Solution Overview

Problem

Conventional driving tools have multiple components and high costs due to the use of separate elastic members for rattling and impact absorption, which complicates assembly and increases complexity.

Innovation Solution

A compact design integrates an elastic member between the magazine and the nose, providing both rattling absorption and impact absorption functions, reducing the number of components and costs by using a single member for both functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate elastic members are used for rattling absorption and impact absorption, then the functions are well-performed, but the number of components increases and cost increases

Engineering Contradiction:

Improverattling absorption functionVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines two separate elastic members (one for rattling absorption at the coupling part and one for impact absorption at the pusher) into a single elastic member that performs both functions. The elastic member is configured with a first portion that contacts the magazine at the coupling part to absorb rattling, and a second portion that contacts the pusher to absorb impact, thereby reducing component count while maintaining both protective functions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The elastic member is designed as a multi-functional component that simultaneously serves as both a rattle-absorbing element at the magazine-nose coupling interface and an impact-absorbing element at the pusher end. This universal component approach allows a single part to replace multiple specialized components, reducing assembly complexity and cost.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If separate elastic members are used for rattling absorption and impact absorption, then the functions are well-performed, but the cost increases

Engineering Contradiction:

Improveimpact absorption functionVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines two separate elastic members (one for rattling absorption at the coupling part and one for impact absorption at the pusher) into a single elastic member that performs both functions. The elastic member is configured with a first portion that contacts the magazine at the coupling part to absorb rattling, and a second portion that contacts the pusher to absorb impact, thereby reducing component count while maintaining both protective functions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The elastic member is designed as a multi-functional component that simultaneously serves as both a rattle-absorbing element at the magazine-nose coupling interface and an impact-absorbing element at the pusher end. This universal component approach allows a single part to replace multiple specialized components, reducing assembly complexity and cost.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If multiple elastic members are used, then the absorption functions are effective, but the assembly process becomes complex

Engineering Contradiction:

Improverattle absorption functionVSAvoidassembly process

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent combines two separate elastic members (one for rattling absorption at the coupling part and one for impact absorption at the pusher) into a single elastic member that performs both functions. The elastic member is configured with a first portion that contacts the magazine at the coupling part to absorb rattling, and a second portion that contacts the pusher to absorb impact, thereby reducing component count while maintaining both protective functions.

Inventive Principle:

Principle #5Merging (Combining)

4Reliability

If separate elastic members are used, then the functions are well-performed, but the weight increases

Engineering Contradiction:

Improveimpact absorption functionVSAvoidtotal weight of elastic members

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The patent combines two separate elastic members (one for rattling absorption at the coupling part and one for impact absorption at the pusher) into a single elastic member that performs both functions. The elastic member is configured with a first portion that contacts the magazine at the coupling part to absorb rattling, and a second portion that contacts the pusher to absorb impact, thereby reducing component count while maintaining both protective functions.

Inventive Principle:

Principle #5Merging (Combining)

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 integrated elastic member simplifies assembly, reduces weight, and enhances durability by stabilizing the feed of driven members while absorbing impacts, thus lowering overall component count and cost.

Implementation Method 1

an elastic member interposed to absorb rattling

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

an elastic member is interposed in the leading end of the magazine or the pusher to absorb impact at a stroke end position of the pusher

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS12600018B2Driving tool

Publication Date: 2026.04.14 MAKITA CORP

AI summary

A driving tool includes an extension that extends from a rear guide of a nose above a driving direction and is coupled to a magazine body by a coupling screw. The tool further includes an elastic member that is arranged in between the rear guide and the magazine body and is below the coupling screw in a driving direction. The elastic member absorbs rattling of the magazine body and is integrally provided with an impact receiving portion to mitigate impact at a forward motion end position of a pusher.