Speaker Waterproofing via Integral Molding
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Solution Overview
Problem
Conventional speaker devices require an additional step of applying waterproof adhesive tape, which decreases production efficiency and increases costs, and the waterproof effect is not guaranteed due to inconsistent adhesive strength.
Innovation Solution
The speaker device integrates a waterproof pad with the front cover and diaphragm through injection molding, eliminating the need for separate adhesive tape and ensuring a strong, consistent waterproof seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If waterproof adhesive tape is adhered onto the front cover to ensure waterproof characteristics, then waterproof effect is improved, but production process complexity increases and production efficiency decreases
Solution Approach 1:
The patent merges the waterproof pad and front cover into a single integrally molded structure. The waterproof pad is directly formed as part of the front cover during injection molding, eliminating the need for separate adhesive tape application. This integration resolves the contradiction by achieving waterproofing without additional assembly steps, thereby maintaining reliability while improving productivity.
2Reliability
If waterproof adhesive tape is adhered onto the front cover, then waterproof effect is improved, but production cost increases
Solution Approach 1:
By combining the waterproof pad and front cover into one molded part, the patent eliminates the need for separate waterproof adhesive tape materials and the labor/equipment required for application. This integration reduces material costs and manufacturing overhead, resolving the contradiction between achieving waterproof reliability and controlling production costs.
3Reliability
If waterproof adhesive tape is used to ensure waterproof characteristics, then waterproof effect may be improved, but manufacturing precision decreases due to inconsistent adhesive strength
Solution Approach 1:
The integral molding of the waterproof pad with the front cover eliminates adhesive joints entirely. The waterproof seal is formed through direct monolithic construction, ensuring uniform structural properties throughout. This resolves the precision issue by removing the variable of adhesive strength variation, as the waterproof barrier is now part of the front cover itself with consistent material properties.
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
This approach simplifies the production process, enhances waterproof efficiency to meet IPX7 standards, reduces production costs, and increases the yield of reprocessed products by ensuring a reliable seal without the need for additional adhesive tape.
Implementation Method 1
The diaphragm are bonded to the front cover and the waterproof pad by integrally injection molding
Data Source
AI summary
Disclosed is a speaker device, comprising a vibration system, a magnetic circuit system, and an auxiliary system for accommodating and fixing the vibration system and the magnetic circuit system. The vibration system comprises a diaphragm, the auxiliary system comprises a front cover, a side of the front cover is provided a waterproof pad, said side being away from the vibration system. The diaphragm are bonded to the front cover and the waterproof pad by integrally injection molding. The speaker device of the present invention satisfies terminal waterproof requirements for IPX7 and above, and has a good waterproof effect. Besides, a production process of the waterproof speaker device is simplified, production efficiency is increased, production costs of the speaker device are decreased, and the reprocessed product yield of the speaker device is increased.