Damper Device Protrusion Gel Bonding
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Solution Overview
Problem
Existing damping pins in micro motion mechanisms, such as voice coil motors, experience reduced bonding force with gel dampers over time due to gap formation, leading to detachment issues under external interference.
Innovation Solution
A damper device design featuring a first holder, a first damper component with a protrusion part and a bar part, where the protrusion part is fixed on the free end and protrudes outward, increasing the contact area with the gel, thereby reducing gap formation and maintaining a stronger bonding force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional damping pin (long rectangular parallelepiped or cylinder) moves in the gel, then the damping pin can reduce the frequency response of the micro motion mechanism to external interference, but the bonding force between the damping pin and the gel is reduced and the damping pin is easily detached from the gel after moving many times
Solution Approach 1:
The damping pin is segmented into a cylindrical body portion and a protrusion portion with radial protrusions. This segmentation increases the contact area between the damping pin and gel, distributing the bonding stress across multiple surfaces and preventing concentrated wear at a single interface, thereby maintaining bonding force over extended service life.
Solution Approach 2:
The damping pin transitions from a simple cylindrical shape to a three-dimensional structure with radial protrusions extending outward. This dimensional change adds surface area in the radial direction, creating multiple contact zones with the gel that enhance bonding strength and prevent detachment during repeated motion cycles.
2Reliability
If the damping pin moves repeatedly in the gel, then the damping function is maintained, but a gap is generated between the damping pin and the gel reducing contact area and bonding force
Solution Approach 1:
The protrusion portion with radial protrusions segments the contact interface into multiple discrete contact zones around the circumference. This segmentation ensures that even if gaps form in certain areas during repeated motion, other contact zones maintain bonding, preserving overall contact area and bonding force.
Solution Approach 2:
The radial protrusions create localized contact zones with enhanced bonding characteristics. Each protrusion acts as an independent bonding node with local quality optimized for gel adhesion, ensuring that the damping pin maintains sufficient total contact area even as individual contact points experience wear over time.
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 increased contact area between the damper component and the gel results in a larger remaining contact area and enhanced bonding force, preventing detachment and improving the damper's effectiveness in reducing external interference effects.
Implementation Method 1
a damper may be disposed in the micro motion mechanism to lower the frequency response of the micro motion mechanism to the external interference
Implementation Method 2
the damping pin moves in the gel and remains bonding to the gel to lower the frequency response of the micro motion mechanism to the external interference
Data Source
AI summary
A damper device and an electronic apparatus are provided. The damper device includes a first holder, a first damper component and a first gel. The first damper component includes a first protrusion part and a first bar part. The first protrusion part includes a first surface. The first bar part includes a first free end and a first fixed end. The first protrusion part is fixed on the first free end, the first fixed end is fixed on the first holder and the first surface protrudes outward from the first free end. The first free end and the first protrusion part are inserted into the first gel, and the first gel moves along the radial direction of the first bar part relative to the first bar part.