Elastic Vibrator Holder for Narrow-Gap Vibration Generators
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Solution Overview
Problem
Existing vibration generators face challenges in assembly complexity, increased manufacturing costs, and reliability due to the need for intricate attachment methods like spot welding, especially as they are miniaturized, and they struggle to maintain a narrow gap between the coil and magnet without vibration interference.
Innovation Solution
A vibration generator design featuring a vibrator-mounted holder with a yoke and arm structure that allows for displacement relative to the chassis, using an elastic material for the holder and integral molding with the yoke and magnet, and a simplified attachment mechanism using pillar bodies and claws, reducing the number of components and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If spot welding is used to attach the plate spring to the chassis for miniaturized vibration generators, then the attachment strength is improved, but the device complexity and manufacturing time increase due to the need for multiple welding positions
Solution Approach 1:
The holder integrates multiple functions (supporting the vibrator, providing attachment points, and enabling displacement) into a single component that is integrally molded with the vibrator assembly. This eliminates the need for separate plate springs and multiple welding operations, reducing both structural complexity and manufacturing steps while maintaining attachment strength through the integral molding and pillar body-claw mechanism.
2Power
If the gap between the coil and magnet is narrowed to improve vibration efficiency, then the power output is improved, but the reliability decreases due to increased risk of contact between the vibrator and coil
Solution Approach 1:
The holder is designed with elastic material and arm structures that allow dynamic displacement relative to the chassis. This dynamic capability enables the system to accommodate the narrowed gap between the coil and magnet for improved vibration efficiency, while the elastic deformation of the holder absorbs shocks and prevents direct contact between the vibrator and coil, thereby maintaining reliability.
3Ease of operation
If a plate spring structure is used to support the vibrator, then the displacement capability is improved, but the manufacturing cost increases due to complicated attachment units requiring screws or multiple welding positions
Solution Approach 1:
The holder combines the support function and displacement capability into an integrally molded structure with the vibrator. The pillar bodies and claws provide the necessary attachment and displacement mechanisms without requiring separate plate springs, screws, or multiple welding operations, thereby simplifying manufacturing and reducing assembly complexity while maintaining vibrator displacement capability.
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 design enables easy assembly, reduces manufacturing costs, enhances reliability by avoiding brittle attachment points, and allows for a thinner, more efficient vibration generator with reduced risk of vibration interference, while maintaining high vibration efficiency.
Implementation Method 1
a vibrator including a magnet weight is supported by a chassis with a plate spring interposed. This vibration generator includes a coil arranged under the magnet. The coil is disposed opposite the magnet. The vibrator moves while deforming the spring, in conjunction with generation of a magnetic field induced by an electric current which flows through the coil.
Implementation Method 2
a holder made of an elastic material, the holder having a natural state and a deformed state different from the natural state
Data Source
AI summary
A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.