Screwdriver Handle Composite Grip with Natural Fibers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Tool handles made of polyethylene are uncomfortable to hold due to unpleasant surface properties, leading to sweaty hands and blisters, especially during physically demanding tasks, and have an unpleasing haptic feeling.
Innovation Solution
A handle element with a core element made of plastic and a casing element containing a mixture of natural substances like flax, cotton, or leather, which is embedded in a plastic matrix to provide a comfortable grip and mechanical support, with the casing element surrounding the gripping area to absorb forces and perspiration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If polyethylene is used for tool handles, then mechanical strength and durability are improved, but surface comfort and haptic feeling deteriorate
Solution Approach 1:
The patent applies composite materials by combining polyethylene (providing mechanical strength) with natural substances like leather, flax, cotton, or wool (providing surface comfort). The natural substances are embedded in the plastic matrix to create a composite handle that simultaneously achieves both mechanical durability and tactile comfort, resolving the contradiction between strength and surface comfort.
2Stability of the object's composition
If polyethylene is used for tool handles, then mechanical stability is improved, but perspiration absorption and comfort deteriorate
Solution Approach 1:
The composite structure combines polyethylene's mechanical stability with natural substances' perspiration-absorbing properties. The natural materials (leather, flax, cotton, or wool) embedded in the plastic matrix actively absorb perspiration from the user's hand, preventing sweat buildup and blisters while maintaining the overall mechanical stability provided by the polyethylene core.
3Ease of operation
If natural substances are added to plastic mixture, then surface comfort and perspiration absorption are improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the natural substances directly into the plastic matrix during the injection molding process. The natural substances are mixed with the plastic material and injected as a single integrated component, eliminating the need for separate assembly steps or adhesives. This combining approach improves grip comfort while minimizing manufacturing complexity by integrating multiple functions into one process.
4Strength
If natural substances are embedded in plastic, then connection strength between handle layers is improved, but use of adhesives is eliminated
Solution Approach 1:
The composite material structure creates intrinsic mechanical interlocking between the natural substances and plastic matrix. The natural fibers and particles are embedded within the plastic during injection molding, creating a unified composite structure where the connection strength arises from the material integration itself rather than requiring separate adhesive joining processes.
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 handle element offers a comfortable and pleasant grip that prevents blisters and maintains mechanical stability under high loads without the need for adhesives or plasticizers, ensuring the natural substance is firmly connected to the core element, enhancing tactile sensation and mechanical load-bearing capacity.
Implementation Method 1
heating the core element to a temperature in the range of 40°C to 100°C
Implementation Method 2
This improves the fusion or vulcanization of the mixture of substances and the plastic for the core element
Data Source
Figure 1~3
Figure 4~5
AI summary
The grip element with natural material for screwdriver, comprises a plastic core element (2), and a plastic mantle element (3), which partially surrounds the core element in a grip area of the grip element. The mantle element has a material mixture that contains natural material of flax, cotton, virgin wool and/or leather, or two plastics with different hardness in a given mixture ratio. The material mixture has desired hardness. The average diameter of the particle of the natural material is 0.5-5 mm in the material mixture. The grip element with natural material for screwdriver, comprises a plastic core element (2), and a plastic mantle element (3), which partially surrounds the core element in a grip area of the grip element. The mantle element has a material mixture that contains natural material of flax, cotton, virgin wool and/or leather, or two plastics with different hardness in a given mixture ratio. The material mixture has desired hardness. The average diameter of the particle of the natural material is 0.5-5 mm in the material mixture. A volume portion of the natural material is 10-50%. The core element and the mantle element are material consistently bonded with one another. The plastic for the core element and the material mixture are mixed with one another for the mantle element. An independent claim is included for a procedure for the production of grip element.