Manual Ear Piercing Gun With Controlled Push-Rod Piercing
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Solution Overview
Problem
Automatic ear piercing guns cause impact damage to the earlobe due to inertia from the earring stud trigger spring during piercing.
Innovation Solution
A manual ear piercing gun design with a front and rear gun part that move linearly relative to each other, featuring a sliding rail member and a push rod connected to the rear gun part to gently push the earring stud into the earlobe, avoiding inertia-induced impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an automatic ear piercing gun uses a spring to trigger the earring stud, then the piercing process is fast and complete instantly, but the earring stud causes impact damage to the earlobe due to inertia
Solution Approach 1:
The patent transforms the static spring-triggered automatic mechanism into a dynamic manual pushing mechanism. The operator directly controls the movement of the earring stud through a pushing action, allowing for dynamic adjustment of the piercing speed and force. This eliminates the inertial impact caused by the spring while maintaining the ability to complete the piercing process efficiently.
Solution Approach 2:
The patent changes the key parameter of force application from a high-velocity spring-driven impact to a controlled, gradual manual push. By altering the speed and force parameters of the earring stud movement, the system achieves piercing without the harmful inertial impact that occurs in automatic spring-based systems.
2Productivity
If the earring stud mounting part moves forward continuously to pierce the earlobe, then the piercing action is completed quickly, but the gap between the earring stud and backing becomes inconsistent
Solution Approach 1:
The patent employs preliminary positioning actions before the piercing occurs. The earring stud and backing are pre-aligned in a clamping structure, and the operator can adjust their relative positions before the pushing action. This preliminary setup ensures that when the piercing is completed, the gap between the earring stud and backing is consistent, addressing the precision issue while maintaining efficiency.
3Object-affected harmful factors
If the earring stud is pushed gently to avoid impact damage, then the earlobe is protected from harm, but the piercing process takes more time
Solution Approach 1:
The patent employs a periodic pushing action where the operator applies force in controlled increments rather than a single continuous push. This allows the earring stud to gradually penetrate the earlobe tissue, minimizing impact damage while completing the piercing process in a reasonable time. The periodic nature of the pushing action balances the conflicting requirements of gentleness and speed.
Data Source
AI summary
A manual ear-piercing gun, comprising a front gun part (1) and a rear gun part (2). The front gun part (1) and the rear gun part (2) are nested and can move linearly relative to each other. The front gun part (1) is constructed to have a mounting groove, and a sliding rail member (6) is provided in the mounting groove. A mounting slot (9b) for an earring backing mounting part (9) is formed between a side groove wall of the mounting groove and the end of the sliding rail member (6) away from the rear gun part (2). A sliding seat (5) for mounting an earring stud mounting part (10) is slidably connected to the sliding rail member (6), and the sliding seat (5) can move along with the relative linear motion of the front gun part (1) and the rear gun part (2).