Multitool Bit Retainer Layout for Compact Storage and Grip
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Solution Overview
Problem
Existing multitools often have undersized and difficult-to-use screwdriver tools due to their compact design, and their accessory tools are relatively small and blunt, compromising usability and ergonomics.
Innovation Solution
A multitool design featuring a handle with integrated bit retainers that store tool bits in parallel slots, allowing for secure storage and easy extraction, and a symmetrical handle for ergonomic use, including a bit socket for versatile functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If the multitool is designed to be compact and light-weight for easy storage, then the tool size and weight are reduced, but the accessory tools become relatively small, simplistic, and blunt, compromising usability and ergonomics
Solution Approach 1:
The patent implements nesting by storing multiple tool bits within the handle cavity of the multitool. The bits are arranged in parallel slots inside the handle, allowing them to be compactly stored when not in use. When needed, a bit can be extracted from the handle and inserted into the bit socket, effectively providing full-sized tool functionality without increasing the overall tool size or weight.
2Volume of moving object
If the screwdriver tool is combined with plier functionality in a compact design, then the tool size is reduced, but the screwdriver becomes undersized and difficult to use due to construction and handle action
Solution Approach 1:
The patent segments the screwdriver functionality into two separate components: a bit socket integrated into the handle for receiving tool bits, and interchangeable tool bits stored in the handle. This segmentation allows the bit socket to maintain proper size and ergonomics for screwdriver operation, while the tool bits can be optimized for their specific functions. The separation eliminates the problem of an undersized, integrated screwdriver mechanism.
Solution Approach 2:
The bit socket is designed as a universal interface that can accept various types of tool bits (screwdriver bits, writing bits, etc.). This multi-functionality allows a single ergonomically-designed socket to perform multiple functions, replacing the need for dedicated undersized screwdriver mechanisms for each function.
3Volume of stationary object
If accessory tools are made compact to fit within the handle, then the tool compactness is improved, but the tools become simplistic and blunt, reducing their effectiveness
Solution Approach 1:
The patent nests full-sized tool bits within the handle cavity, allowing them to be stored compactly when not in use. When extracted, the bits maintain their full size and effectiveness for their intended purposes. The nesting arrangement in parallel slots within the handle enables compact storage without compromising the dimensions or effectiveness of the tool bits themselves.
Data Source
AI summary
A multitool includes (a) a handle extending along a tool axis; (b) at least one tool movably mounted to the handle for movement between a deployed position and a stowed position; and (c) a bit retainer integrated into the handle for storing a plurality of tool bits. The bit retainer includes one or more bit storage slots. Each bit storage slot retains a respective pair of tool bits at axially opposite ends of the slot. Each tool bit is selectively slidable along a respective slot from a storage position adjacent a respective end of the slot in which the bit is securely retained in the slot, to an extraction position toward a center of the slot from which the bit is removable from the slot for insertion into a bit socket of the multitool for use.