Handheld Power Tool Accessory Receptacle with Dynamic Unlocking Mechanism
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Solution Overview
Problem
Handheld power tools face challenges in efficiently attaching and detaching accessories, especially in edge-adjacent working conditions where obstacles hinder access to the accessory receptacle.
Innovation Solution
The handheld power tool incorporates an accessory receptacle with a receiving portion, a limiting portion, and an unlocking portion. The unlocking portion is triggerable to release the retaining force on the accessory, allowing for easy detachment and mounting without the need for special tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If accessories are fixed with screws on the side of the handheld power tool, then the accessories are securely attached, but the accessory receptacle becomes inaccessible in edge-adjacent working conditions
Solution Approach 1:
The accessory receptacle is designed with a movable limiting portion that can be dynamically adjusted between a retaining state (when unlocked) and a released state (when unlocked). The unlocking portion enables the limiting portion to move along the extension direction of the accessory, allowing the accessory to be securely held during normal operation and easily removed when needed, thus resolving the contradiction between secure attachment and accessibility in confined spaces.
2Ease of operation
If accessories are securely retained by the limiting portion, then the accessory remains fixed during operation, but the accessory cannot be easily detached without tools
Solution Approach 1:
The unlocking portion is designed to be operable by the user without requiring any additional tools. When the user operates the unlocking portion, it directly drives the limiting portion to move and release the retaining force on the accessory. This self-service mechanism allows the user to easily detach the accessory by simply operating the unlocking portion, thus resolving the contradiction between easy detachment and secure retention.
3Productivity
If the limiting portion exerts continuous retaining force on the accessory, then the accessory is securely held, but the accessory cannot be quickly released when needed
Solution Approach 1:
The limiting portion is designed to dynamically adjust its position and the magnitude of retaining force it exerts on the accessory. When unlocked, the limiting portion exerts strong retaining force to securely hold the accessory. When the unlocking portion is operated, the limiting portion quickly moves along the extension direction of the accessory, rapidly reducing the retaining force to enable quick release. This dynamic adjustment resolves the contradiction between strong retention and quick release.
4Ease of operation
If the accessory receptacle is designed for tool-free operation, then user convenience is improved, but the mechanism becomes more complex
Solution Approach 1:
The unlocking portion and limiting portion are integrated into a unified mechanism where the unlocking portion directly drives the limiting portion to move. This merging of functions allows the system to achieve tool-free operation while minimizing structural complexity. The limiting portion is designed to move along the extension direction of the accessory, and its movement is directly coupled with the operation of the unlocking portion, creating an efficient and relatively simple mechanism that resolves the contradiction between ease of operation and device complexity.
Data Source
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AI summary
A handheld power tool including an accessory receptacle. The accessory receptacle includes a receiving portion for receiving at least one accessory; a limiting portion for retaining the accessory in the receiving portion; an unlocking portion triggerable to drive the limiting portion to release a retaining force on the accessory; and a second cover forming an accommodation space with a first cover, where the accommodation space is configured to at least partially accommodate the receiving portion, the limiting portion, and the unlocking portion.