Two-Step Rivet Gun Trigger for Airflow Control
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Solution Overview
Problem
Conventional rivet guns have issues with high-pressure air constantly being outputted regardless of operation, leading to inefficiency and increased manufacturing costs due to complex structures that complicate the housing formation process.
Innovation Solution
A multi-step control rivet gun design with a two-step trigger mechanism that activates high-pressure airflow only when needed, featuring a pneumatic cylinder and a two-step pressing assembly for efficient core pin ejection and insertion, and a simplified handle structure for reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If high-pressure air source constantly outputs air into the rivet gun, then the broken core pin can be ejected, but energy is wasted and noise increases when not needed
Solution Approach 1:
The patent implements periodic action by using a two-step trigger mechanism that controls the high-pressure air source to operate only when needed. The first step activates air flow for core pin ejection, while the second step maintains the connection without continuous air flow, thereby eliminating unnecessary energy waste and noise while preserving the ejection function when required.
Solution Approach 2:
The rivet gun incorporates a self-service mechanism where the trigger device itself controls the activation and deactivation of the high-pressure air source. The operator's action on the trigger directly regulates air flow, allowing the system to automatically switch between operational states without external control, thus preventing unnecessary energy consumption and noise generation.
2Ease of operation
If the rivet gun structure is complicated to control air flow selectively, then air output can be controlled, but manufacturing cost increases due to complex housing formation
Solution Approach 1:
The patent applies segmentation by dividing the trigger mechanism into two distinct steps with different functions. The first step segment handles core pin ejection control, while the second step segment maintains system readiness without activating air flow. This segmentation allows selective air output control through a relatively simple structural design, avoiding the need for complex housing formation processes and reducing manufacturing costs.
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 allows for selective air output during riveting operations, saving energy and reducing noise, while simplifying the handle manufacturing process, resulting in a cost-effective and efficient rivet gun.
Implementation Method 1
the air output by the high-pressure air source flows through the barrel from the front end to the rear end and sucks the broken core pin vised by the vise assembly backward into the collector
Implementation Method 2
The pneumatic cylinder is mounted movably under the handle and capable of activating the vise assembly through pneumatic and hydraulic means
Data Source
AI summary
A rivet gun has a barrel, a handle, a pneumatic cylinder and a two-step pressing assembly. The handle has a valve-mounting hole, a first mounting hole and a second mounting hole being cylindrical and defined in a bottom end of the handle. The pneumatic cylinder has an inlet bushing, an inner bushing and a control valve assembly respectively mounted in the aforementioned holes. The two-step pressing assembly is mounted on the handle and allows the rivet gun to be operated by two steps. The handle is structurally simple and has a low manufacturing cost. The bushings and control valve assembly are easily mounted in and detached from the handle so that assembling of the rivet gun is efficient.