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Waterproof sound transmission membrane and mobile phone

A technology of waterproof sound-permeable membrane and sound-permeable membrane, which is applied in the field of filter membranes, can solve problems such as the impact of sound-permeable performance, and achieve the effect of improving sound-permeable performance and reducing the impact

Active Publication Date: 2017-09-22
HANGZHOU COBETTER FILTRATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that although the waterproof and sound-permeable membrane of this double-layer structure has improved waterproof performance, the sound-permeable performance will be partially affected.

Method used

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  • Waterproof sound transmission membrane and mobile phone
  • Waterproof sound transmission membrane and mobile phone
  • Waterproof sound transmission membrane and mobile phone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] see Figure 1-4 , the invention discloses a waterproof sound-permeable membrane, which includes a base material layer 1 , a buffer layer 2 and a sound-permeable membrane layer 3 . Wherein, the buffer layer 2 can buffer the impact of the water flow, and the sound-permeable film layer 3 can improve the sound-permeable performance.

[0044] The buffer layer 2 is laminated on the front of the substrate layer 1 , and the sound-permeable film layer 3 is laminated on the reverse surface of the substrate layer 1 . Here, the front side of the substrate layer 1 refers to the side facing the direction of water flow, and the back side of the substrate layer 1 refers to the side facing away from the direction of water flow.

[0045] The buffer layer 2 is divided into two layers, namely a first layer 201 and a second layer 202 , specifically, the second layer 202 is laminated on the front side of the substrate layer 1 . The first layer 201 is provided with water inlet holes 203, an...

Embodiment 2

[0050] In yet another embodiment provided by the present invention, the structure of the waterproof sound-permeable membrane in this embodiment is similar to that in Embodiment 1, and the similarities will not be repeated, and only the differences will be introduced.

[0051] This embodiment specifically discloses that in the waterproof sound-permeable membrane, the surface of the first layer 201 facing the second layer 202 is provided with a plurality of protrusions 4, and the protrusions 4 can form a gap between the first layer 201 and the second layer 202. A certain gap can further buffer the water pressure. A plurality of protrusions 4 may also be provided on the side of the second layer 202 facing the first layer 201 .

[0052]Further, the present invention discloses that the outer edge of the first layer 201 and the outer edge of the second layer 202 are sealed by heat fusion welding. The connection fastness of hot melt welding is strong, which can increase the connecti...

Embodiment 3

[0061] Such as Figure 5-6 As shown, the present invention discloses a mobile phone. The housing 5 of the mobile phone is provided with an opening 6 for a loudspeaker. The waterproof sound-permeable membrane is connected to the housing 5 as in any one of the above embodiments. The surface-back adhesive connects the casing 5 and the waterproof sound-permeable membrane, and the outer diameter of the waterproof sound-permeable membrane is larger than the inner diameter of the opening 6 .

[0062] Mobile phone provided by the present invention, because waterproof sound-permeable membrane is pasted on its loudspeaker opening 6, and the outer diameter of waterproof sound-permeable membrane is greater than the inner diameter of opening 6, therefore, waterproof sound-permeable membrane can prevent water or dust from invading the casing inside, thereby protecting the loudspeaker.

[0063] During the IPX5 and IPX6 tests, the water directly rushes to the buffer membrane instead of direc...

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Abstract

The invention discloses a waterproof sound transmission membrane and a mobile phone. The waterproof sound transmission membrane comprises a base material layer, a buffering layer and a sound transmission membrane layer; the sound transmission membrane layer is laminated at the back side of the base material layer; the buffering layer comprises a first layer and a second layer connected with the first layer, a water inlet hole is formed in the first layer, a water outlet hole communicated with the water inlet hole is formed in the second layer, and a distance between an axis of the water outlet hole and the axis of the water inlet hole is greater than or equal to the sum of radius from the water flow entering direction, so that after the water enters from the water inlet hole, the water passes through passages of the water inlet hole and the water outlet hole and then flows out from the water outlet hole rather than flowing out from the water outlet hole; and therefore, the waterproof sound transmission membrane has certain buffering effect on the water pressure. In addition, the waterproof sound transmission membrane also comprises a sound transmission membrane layer, so that the sound transmission performance of the waterproof sound transmission membrane can be improved.

Description

technical field [0001] The invention relates to the technical field of filter membranes, in particular to a waterproof sound-permeable membrane and a mobile phone. Background technique [0002] Nowadays, electronic devices such as mobile phones, laptop computers, walkie-talkies, Bluetooth headsets, and outdoor monitors are becoming more and more popular. The earpiece is equipped with a waterproof sound-permeable membrane. [0003] The main material of waterproof and sound-permeable membranes currently on the market is ePTFE or PU. General waterproof and sound-permeable membranes can meet the waterproof level requirements of IPX7, but cannot meet the waterproof level requirements of IPX5 or IPX6. Because when doing the IPX5 or IPX6 test, the water rushes directly onto the waterproof sound-permeable membrane, the membrane will be delaminated or the water will penetrate the membrane into the cavity and the test will fail. [0004] Chinese Patent Publication No. CN201080002329...

Claims

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Application Information

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IPC IPC(8): B32B3/24B32B3/06B32B27/06
CPCB32B3/06B32B3/266B32B27/06B32B2250/24B32B2307/73B32B2307/10B32B2457/00
Inventor 郭江明周徽
Owner HANGZHOU COBETTER FILTRATION EQUIP
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