Router Sub-Base Adapter for Dual Guide Bushing Mounting

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Solution Overview

Problem

Existing routers are limited to accommodating only a single type of guide bushing, requiring users to purchase multiple routers or sub-base adapters for different types, leading to increased costs and inefficient resource utilization.

Innovation Solution

A router design featuring a sub-base adapter that can receive and securely mount two different types of guide bushings, allowing for interchangeable use without the need for multiple routers or adapters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a router is designed to accommodate only a single type of guide bushing, then the device structure is simple and reliable, but the adaptability and versatility are poor

Engineering Contradiction:

Improveguide bushing compatibilityVSAvoidbase portion structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The base portion is designed with multiple mounting arrangements that can accommodate different types of guide bushings (e.g., first guide bushing with bayonet fitting, second guide bushing with screw mounting). This allows a single router to perform multiple functions and work with various guide bushing types, directly resolving the contradiction between adaptability and device complexity by integrating universal mounting capabilities into the base structure

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If users purchase multiple routers or sub-base adapters for different guide bushing types, then the adaptability improves, but the cost increases and resource utilization becomes inefficient

Engineering Contradiction:

Improveguide bushing compatibilityVSAvoidnumber of routers or adapters

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

Multiple guide bushing mounting arrangements are merged into a single base portion, allowing users to have one router instead of multiple routers or adapters. The base portion integrates different mounting mechanisms (bayonet fitting, screw mounting) that can securely hold various guide bushing types, thereby reducing the total quantity of equipment needed and improving resource utilization

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If users constantly replace or reconfigure the router's base portion for different guide bushings, then the adaptability is maintained, but the operation time increases and productivity decreases

Engineering Contradiction:

Improveguide bushing compatibilityVSAvoidreplacement and reconfiguration time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The base portion is pre-configured with multiple mounting arrangements during manufacturing, so users do not need to perform preliminary modifications or reconfigurations when switching guide bushings. The pre-integrated mounting options allow users to simply attach different guide bushings without time-consuming setup or modification work, thereby reducing operation time and maintaining productivity

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4506127A1A router and sub-base adapter therefor

Publication Date: 2025.02.12 BLACK & DECKER CORP

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AI summary

A router comprises a housing and a motor mounted in the housing and operatively connected to a tool holder arranged to hold a cutting tool bit. The housing comprises a base portion. A sub-base is mountable to the base portion and the sub-base comprises a sub-base adapter configured to receive a first guide bushing and a second guide bushing wherein the first guide bushing is a different type from the second guide bushing.