Damper Spring Mechanism for Clamshell Printer Lid Impact Absorption
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Solution Overview
Problem
Clamshell printers used in shop registers and ATMs face challenges in absorbing impact during lid opening, which can lead to mechanical stress and potential breakage due to the lack of effective damping mechanisms, and the existing designs may not adequately manage the interaction between the metal lid and resin-based printer body.
Innovation Solution
Incorporation of a damper spring with a coil spring and slidable parts on the printer body to absorb the impact of lid opening, along with a metal lid damper spring that exerts a restoring force to manage the opening and closing of the lid, and the use of die-cast gear boxes and stainless steel components for the blade units to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the lid is made of metal for durability, then strength is improved, but impact during opening causes mechanical stress and potential breakage
Solution Approach 1:
A damper spring is installed between the metal lid and printer body to provide cushioning before impact occurs during lid opening. The spring absorbs the shock energy, preventing direct transmission of impact forces to the printer body and internal components, thus resolving the contradiction between metal lid strength and impact-induced stress.
2Reliability
If a damper spring is added to absorb impact, then reliability is improved, but device complexity increases
Solution Approach 1:
The damper spring serves as an intermediary element between the metal lid and printer body, mediating the impact forces. This simple spring mechanism provides reliable shock absorption without requiring complex damping systems, thus improving reliability while minimizing increases in device complexity.
3Ease of operation
If the lid is opened violently, then ease of operation is improved, but mechanical stress increases causing breakage
Solution Approach 1:
The damper spring is pre-installed in the lid mechanism to cushion violent opening actions. When the lid is opened forcefully, the spring compresses to absorb the excess energy, preventing transmission of damaging stress to the printer body and internal components, thus allowing ease of operation without compromising structural integrity.
4Reliability
If die-cast gear boxes and stainless steel components are used, then durability is improved, but manufacturing cost increases
Solution Approach 1:
High-quality die-cast gear boxes and stainless steel components are selectively applied only to critical areas subject to high stress and wear, such as the blade units and gear mechanisms. This localized use of premium materials improves durability where needed while controlling overall manufacturing costs by not over-engineering non-critical components.
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 effectively reduces mechanical stress and impact during lid opening, preventing breakage and ensuring smooth operation by absorbing violent openings and maintaining structural integrity through the use of damping mechanisms and robust material choices.
Implementation Method 1
The damper spring is a coil spring that includes first and second ends extending from first and second ends of the coil spring, respectively, and engaging with each other. The damper spring exerts a restoring force in a direction to move the first and second ends of the damper spring away from each other.
Implementation Method 2
In order to solve the above problems, a lid damper spring is provided in a printer. The lid damper spring absorbs an impact that occurs when a lid is opened.
Data Source
AI summary
A printer includes a printer body, a lid, a damper spring, and a slidable part. The lid is connected to the printer body so as to be opened and closed relative to the printer body. The damper spring is provided on the printer body and includes a coil spring and first and second ends extending from first and second ends of the coil spring, respectively, and engaging with each other. The damper spring exerts a restoring force in a direction to move the first and second ends of the damper spring away from each other. The slidable part is provided in the printer body. When the lid is opened, the slidable part is pressed by the lid so as to press the first end of the damper spring so that the damper spring exerts the restoring force in a direction to close the lid.