Segmented Guide Rail Snap-Fit Connection for Electric Tools
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Solution Overview
Problem
Existing guiding mechanisms for portable electric tools, such as saws, are complex and require additional joints for assembly, making them difficult to use for large workpieces and prone to disassembly issues.
Innovation Solution
A guiding mechanism with integrated protruding portions and grooves on the guide rail, featuring a spring clamping portion and a locking mechanism, allowing for assembly without additional joints, reducing parts and simplifying operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If segmental type guiding mechanism is used to guide on large length workpiece, then adaptability to different workpiece lengths is improved, but device complexity increases due to additional joints and multiple parts
Solution Approach 1:
The guide rail is divided into multiple modular sections that can be connected in series. Each section has standardized protruding portions and grooves for connection, allowing the guide rail to be assembled in different lengths according to workpiece requirements while maintaining a simple overall structure.
Solution Approach 2:
The connection function is integrated directly into the guide rail sections themselves through protruding portions and grooves, eliminating the need for separate additional joints. This merging of connection functionality into the main structure reduces the number of parts and simplifies the overall assembly.
2Ease of manufacture
If additional joints are used to connect guiding boards, then assembly of segmental guiding mechanism is enabled, but quantity of parts increases and operation becomes more complex
Solution Approach 1:
The connection functionality is merged into the guide rail sections themselves. The protruding portions and grooves are integral parts of each guide rail section, eliminating the need for separate joints and reducing the total number of parts while maintaining assembly capability.
Solution Approach 2:
The guide rail sections are designed with universal connection features (protruding portions and grooves) that serve both as structural elements and as connection mechanisms. This multi-functionality reduces the need for dedicated connection parts.
3Reliability
If traditional joint assembly with screws is used, then secure connection is achieved, but assembly operation becomes time-consuming and complex
Solution Approach 1:
The connection mechanism uses a dynamic snap-fit design where the elastic portion deforms during assembly and then locks into place. This allows for quick, tool-free assembly while maintaining a secure connection, eliminating the need for time-consuming screw operations.
Solution Approach 2:
The elastic portion automatically locks the guide rail sections together through the snap-fit mechanism without requiring external fasteners or complex assembly operations. The connection is self-securing, improving both ease of operation and reliability.
4Manufacturing precision
If integral type guiding mechanism is used, then guiding accuracy is improved, but adaptability to large length workpieces is reduced
Solution Approach 1:
The guide rail is segmented into multiple sections that can be connected in series to achieve any required length. Each section maintains the precise guiding geometry of the integral type, so the overall assembly preserves high guiding accuracy while being adaptable to large workpieces.
Solution Approach 2:
Multiple precise guide rail sections are combined through the protruding portion and groove connection. This merging maintains the guiding accuracy characteristics of individual sections while extending the total length to accommodate large workpieces.
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 solution provides a simple, efficient, and secure assembly method for guiding mechanisms, enabling straightforward connection and disconnection of guide rail sections, enhancing usability and reducing complexity.
Implementation Method 1
the protruding portion is formed with a spring clamping portion engageable with the cut-out
Data Source
AI summary
A guiding mechanism for an electric tool includes at least two guiding elements at least one of which has a first end portion having at least one protruding portion extending outwards therefrom and the other of which has a second end portion having at least one groove therein which may be engaged with the protruding portion. The groove has a cut-out and the protruding portion has an elastic clamping portion which may be engaged with the cut-out.