Linkable Chopstick Joint Structure for Easier Manipulation
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Solution Overview
Problem
Existing chopsticks are difficult for many users to manipulate due to the required manual dexterity and coordination, and existing solutions that connect them often increase costs, waste resources, and are impractical for manufacturing or use in restaurant settings.
Innovation Solution
The design of chopsticks with angled channels and retaining members allows them to be cooperatively attached and detached, enabling facile use without a spring-like mechanism, reducing material waste, and allowing for easy separation and reassembly from a single piece of material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If spring-like flexible bridging members are used to connect chopsticks, then ease of operation is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent integrates the connecting function directly into the chopstick structure itself by forming channels within the chopstick body that receive and retain the opposing chopstick. This merges the chopstick and connector into a unified structure, eliminating the need for separate spring-like bridging members while maintaining ease of operation.
Solution Approach 2:
The patent removes the external spring-like bridging member from the system and replaces it with an internal channel structure within the chopstick. This extraction simplifies the overall device by eliminating unnecessary components while preserving the functional benefit of easy manipulation.
2Ease of operation
If additional plastic bridging members are used to connect chopsticks, then ease of operation is improved, but loss of substance increases due to waste
Solution Approach 1:
The connecting structure is merged with the chopstick body through internally formed channels, eliminating the need for separate plastic bridging members. This reduces material consumption and waste while maintaining the ease of manipulation benefit.
3Ease of operation
If channeled joint portions with leaf-spring-like mechanisms are used, then ease of operation is improved, but reliability decreases as chopsticks may separate
Solution Approach 1:
The channel structure with retaining members creates a self-securing joint where the chopsticks automatically lock together through the retained connection. The retained portion prevents separation while maintaining ease of manipulation, making the joint self-sufficient without requiring additional spring mechanisms.
4Ease of manufacture
If oblique channel joints are used to join chopsticks, then ease of manufacture is improved, but reliability decreases due to rotation and shear forces
Solution Approach 1:
The joint structure is segmented into distinct functional elements: the oblique channel for insertion, the retaining member for securing, and the retained portion for preventing separation. This segmentation allows each element to perform its specific function effectively, maintaining manufacturing simplicity while improving joint stability against rotation and shear forces.
Solution Approach 2:
The channel and retaining member structure creates a self-securing joint that automatically resists rotation and shear forces through its geometric configuration. The retained portion of the opposing chopstick within the channel provides inherent stability without requiring additional reinforcement.
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
This design facilitates easy grasping of objects with minimal effort, reduces environmental impact by using sustainable materials, and eliminates the need for external retaining members, enhancing user comfort and manufacturing practicality.
Implementation Method 1
the first base member of the first chopstick is inserted into the second channel of the second chopstick, with the second base member of the second chopstick being inserted into the first channel of the first chopstick, forming a joint having the chosen angle between the first chopstick and the second chopstick
Data Source
AI summary
A pair of chopsticks that may be reversibly attached in a cooperating manner for providing a forceps- or tweezers-like spring action for grasping objects, such as food, or for being used in the conventional manner for using chopsticks, is described. Identical angled channels located in the vicinity of the non-grasping end of each chopstick and having a depth of about one-half the width of the chopstick, permit the opposing channels to be fitted together to join the chopsticks. A retaining member may be wrapped around the channel joint to stabilize the joint and hold the chopsticks together. In another embodiment, two shallow angled side indentations are cut into the width of each chopstick at diagonally opposing sides of the primary angled channel formed therein, creating compression surfaces which oppose rotation and opening of the channel joint. Back cuts in the side indentation and in the primary channel permit the chopsticks to be reversibly snap-locked together such that the chopsticks may be assembled and disassembled as desired. In this situation, no external retaining tension member is required to maintain a stable joint during use.