Cutting Saw Control and Dual-Purpose Shaft Sleeve for Blade Changes

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Solution Overview

Problem

Conventional cutting saws have low intelligence and poor user experience, and the process of replacing saw blades with different diameters is complex and prone to errors, often requiring multiple shaft sleeves and increasing the risk of losing them.

Innovation Solution

The cutting saw design includes a control board connected to a power supplying part, a driving part, and a lighting part, with an operating panel featuring a power supply switch, a lighting switch, and an alarm light. This setup allows for centralized control, improved user experience, and easy fault detection. Additionally, a dual-purpose shaft sleeve with interchangeable shaft surfaces of different diameters simplifies the process of replacing saw blades, eliminating the need for multiple shaft sleeves and reducing the risk of incorrect diameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple shaft sleeves are used to match different diameter saw blades, then the adaptability of the cutting saw is improved, but the device complexity increases and the ease of operation deteriorates

Engineering Contradiction:
Improvecompatibility with different saw blade diametersVSAvoidnumber of shaft sleeves required
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The shaft sleeve is designed with a universal structure that can accommodate saw blades of different diameters. The shaft sleeve includes a sleeve body with an inner cavity that can hold different diameter matching pieces, allowing a single shaft sleeve to perform multiple functions for different blade sizes.

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

Solution Approach 2:

Different diameter matching pieces are nested within the inner cavity of the shaft sleeve. The matching pieces can be stored inside the shaft sleeve body, creating a compact nested structure where smaller components are housed within larger ones, eliminating the need for multiple separate shaft sleeves.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Adaptability or versatility

If multiple shaft sleeves are used to match different diameter saw blades, then the adaptability is improved, but the ease of operation worsens due to complicated replacement process

Engineering Contradiction:
Improvecompatibility with different saw blade diametersVSAvoidsimplicity of saw blade replacement
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

Different diameter matching pieces are pre-stored within the shaft sleeve's inner cavity before operation. When a saw blade replacement is needed, the user only needs to select the appropriate pre-stored matching piece and install it, rather than searching for or carrying multiple separate shaft sleeves.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If conventional cutting saws are used without intelligent control, then the device complexity is reduced, but the extent of automation and user experience deteriorate

Engineering Contradiction:
Improvecontrol system structureVSAvoidintelligent control capability
Core Design Contradiction:
Device complexityVSExtent of automation

Solution Approach 1:

The control board receives feedback signals from various sensors including a Hall sensor that detects the position of the trigger switch, and a light sensor that detects the state of the light switch. Based on this feedback, the control board automatically adjusts the motor speed and control the light bulb, implementing intelligent control without complex manual intervention.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The cutting saw is equipped with a light bulb that automatically turns on when the saw blade is activated, providing illumination without requiring separate manual operation. The system serves itself by automatically coordinating the light function with the cutting operation.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS20250073793A1Cutting saw and control method of the cutting saw
Publication Date: 2025.03.06 GLOBE (JIANGSU) CO LTD
  • US20250073793A1 patent drawing
  • US20250073793A1 patent drawing
  • US20250073793A1 patent drawing

AI summary

A cutting saw includes a housing, a cutting part, a driving part, a power supplying part, a lighting part and a control board. The control board is electrically connected with the power supplying part, the driving part and the lighting part respectively. An operating panel is installed on the housing. The operating panel is provided with a power supply switch, a lighting switch and an alarm light. The power supply switch, the lighting switch, and the alarm light are electrically connected with the control board. When the power supply switch is activated, a light of the power supply switch lights up. If the control board of the cutting saw does not receive any control signal input within a first time threshold, the light starts to flash. If there is still no control signal input within a second time threshold after flashing, the power supply switch enters an inactivated state.