Fiberglass Nylon Composite Hammer Tacker Shell
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hammer tackers are heavy, noisy, and prone to shaking due to the use of metal shells and gaps between the shell and striking mechanism, making them difficult to handle and manufacture.
Innovation Solution
A hammer tacker with a shell made of a fiberglass and nylon mixture by injection molding, combined with a metal striking mechanism featuring a pivotally connected magazine under elastic force, which reduces weight, noise, and shaking, and simplifies manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal shell is used in the hammer tacker, then the shell provides sufficient strength and durability, but the overall weight increases making it difficult for users to handle
Solution Approach 1:
The patent applies composite materials by combining fiberglass and nylon in a specific weight ratio (30%-70% fiberglass and 70%-30% nylon) to create a shell that provides sufficient strength while significantly reducing weight compared to traditional metal shells. This composite material approach resolves the contradiction between strength and weight by leveraging the high strength-to-weight ratio of fiberglass combined with the durability and flexibility of nylon.
2Ease of manufacture
If gaps are left between the metal shell and metal striking mechanism for assembly clearance, then the components can be easily assembled, but noises and shaking occur during striking operations
Solution Approach 1:
The patent employs the flexible shell principle by using a nylon-based composite shell that can elastically deform to accommodate the striking mechanism without requiring large assembly gaps. The flexibility of the nylon material allows the shell to conform to the metal striking mechanism components, eliminating gaps that cause noise and shaking while maintaining ease of assembly through the material's inherent compliance.
3Ease of manufacture
If metal sheets are bent or perforated to form the shell, then the shell can be manufactured, but the shape is restricted and processing becomes difficult
Solution Approach 1:
The patent applies parameter changes by transitioning from metal sheet processing to injection molding of composite materials. This manufacturing method change allows for greater shape flexibility and complexity in the shell design, as injection molding can produce three-dimensional curved surfaces and integrated features that would be difficult or impossible to achieve through bending and perforating metal sheets. The process parameter change enables both ease of manufacture and shape freedom.
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 results in a lighter, quieter, and more efficient hammer tacker with reduced noise and shaking, while also lowering production costs through easier manufacturing processes.
Implementation Method 1
The magazine is under an elastic force by an elastic element so that the third end of the magazine tends to move outward away from the striker
Implementation Method 2
The shell is made of a mixture of fiberglass and nylon by injection molding wherein the mixture is composed of 30% to 70% of fiberglass by weight and 70% to 30% of nylon by weight
Data Source
AI summary
The hammer tacker includes a shell, a handle, and a striking mechanism. The shell is made of a mixture of fiberglass and nylon by injection molding. The shell encloses a receiving room and has a bottom opening extending along the longitudinal direction of the shell and communicating with the receiving room. The handle is disposed on the rear end of the shell. The striking mechanism is made of metal and includes a magazine and a striker. The magazine is received in the receiving room. An end of the magazine is pivotally connected to the rear end of the shell, and the other end tends to move outward due to an elastic element. At end of the striker is disposed on the inner wall of the shell. When the magazine is hit upward, the striker strikes the nails out.