Crease-resistant sound transmission membrane assembly and electronic equipment

Abstract

The utility model discloses an anti-wrinkling sound transmission membrane assembly and an electronic device, the anti-wrinkling sound transmission membrane assembly comprises an anti-wrinkling sound transmission membrane main body, the middle part of the anti-wrinkling sound transmission membrane main body is provided with a sound transmission channel; the anti-wrinkling sound transmission membrane main body comprises a first anti-wrinkling supporting layer, a first bonding layer, a sound transmission membrane body, a second bonding layer and a second anti-wrinkling supporting layer which are sequentially stacked, the first anti-wrinkling supporting layer is acoustic screen cloth, and the second anti-wrinkling supporting layer is annular. The edge areas on the two sides of the sound transmission membrane body are correspondingly bonded and fixed to the first anti-wrinkling supporting layer and the second anti-wrinkling supporting layer through the first bonding layer and the second bonding layer respectively, and the sound transmission channel is shielded by the first anti-wrinkling supporting layer and the sound transmission membrane body. According to the utility model, the smoothness of the sound transmission film body can be ensured, and the sound transmission is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sound -transmitting membrane technical field especially relates to a kind of wrinkle-proof sound -transmitting membrane assembly and electronic equipment. BACKGROUND

[0002] Waterproof sound -transmitting membrane is a kind of waterproof material of acoustic component, mainly used to protect flat computer, mobile phone, electronic watch and other electronic devices (such as loudspeaker, earpiece, speaker, MIC etc.), can prevent water and dust and other foreign matter from entering and affecting the occurrence of electronic device and receiving sound, to avoid adverse effects on sound quality.Waterproof sound -transmitting membrane combines waterproof and sound -transmitting two functions, can ensure the normal transmission of sound while maintaining waterproof performance.

[0003] The waterproof sound -transmitting membrane assembly in prior art includes waterproof sound -transmitting membrane and adhesive, one side of waterproof sound -transmitting membrane is adhered to acoustic device through adhesive, the other side of waterproof sound -transmitting membrane is adhered to the shell of electronic device through adhesive, and the structure is simple.

[0004] However, waterproof sound -transmitting membrane assembly lacks support structure for supporting waterproof sound -transmitting membrane, in actual use, waterproof sound -transmitting membrane is prone to slight wrinkle, and waterproof sound -transmitting membrane is uneven, which can adversely affect the transmission of sound. UTILITY MODEL CONTENTS

[0005] The primary object of the utility model is to provide a kind of wrinkle-proof sound -transmitting membrane assembly to ensure its flatness, guarantee that sound transmission is not affected.

[0006] Another object of the utility model is to provide a kind of electronic equipment using the above-mentioned wrinkle-proof sound -transmitting membrane assembly.

[0007] To solve the above technical problems, the utility model provides the following technical solutions:

[0008] A kind of wrinkle-proof sound -transmitting membrane assembly, including wrinkle-proof sound -transmitting membrane main body, the middle part of the wrinkle-proof sound -transmitting membrane main body is equipped with sound -transmitting passage, the wrinkle-proof sound -transmitting membrane main body includes first wrinkle-proof support layer, first adhesive layer, sound -transmitting membrane body, second adhesive layer and second wrinkle-proof support layer that are sequentially stacked, the first wrinkle-proof support layer is acoustic mesh cloth, the second wrinkle-proof support layer is annular, the edge area of the both sides of the sound -transmitting membrane body is respectively through the first adhesive layer and the second adhesive layer with the first wrinkle-proof support layer and the second wrinkle-proof support layer corresponding and is adhered fixed, the first wrinkle-proof support layer and the sound -transmitting membrane body block the sound -transmitting passage.

[0009] Preferably, the wrinkle-proof sound -transmitting membrane main body further includes sealing compression layer, the sealing compression layer is annular, and the sealing compression layer is located on the side of the first wrinkle-proof support layer away from the sound -transmitting membrane body.

[0010] Preferably, the wrinkle-resistant acoustic diaphragm body further comprises a third adhesive layer, and the sealing compression layer is adhered and fixed to the side of the first wrinkle-resistant support layer away from the acoustic diaphragm body through the third adhesive layer.

[0011] Preferably, the wrinkle-resistant acoustic diaphragm body further comprises a wear-resistant layer, and the wear-resistant layer is annular, and the wear-resistant layer is located on the side of the sealing compression layer away from the first wrinkle-resistant support layer.

[0012] Preferably, the wear-resistant layer is made of PET.

[0013] Preferably, the thickness of the sealing compression layer is Tum, the inner diameter of the sealing compression layer is Dum, and T / D≤0.5.

[0014] Preferably, the sealing compression layer is made of PU foam or rubber.

[0015] Preferably, the wrinkle-resistant acoustic diaphragm body further comprises a waterproof tape layer, and the waterproof tape layer is located on the side of the second wrinkle-resistant support layer away from the acoustic diaphragm body.

[0016] Preferably, the outer edge of the acoustic diaphragm body is located between the outer edge and the inner edge of the first adhesive layer and the second adhesive layer.

[0017] The utility model relates to an electronic equipment comprising the wrinkle-resistant acoustic diaphragm assembly.

[0018] Compared with the prior art, the wrinkle-resistant acoustic diaphragm assembly has the beneficial effects that:

[0019] In the utility model, the wrinkle-proof sound transmission membrane main body includes first wrinkle-proof support layer, first adhesive layer, sound transmission membrane body, second adhesive layer and second wrinkle-proof support layer which are sequentially stacked, the outer edge area of first wrinkle-proof support layer is fixedly connected with sound transmission membrane body through first adhesive layer, the outer edge area of second wrinkle-proof support layer is fixedly connected with sound transmission membrane body through second adhesive layer, so first adhesive layer and second adhesive layer are annular, second wrinkle-proof support layer is also annular, the hollow part in first adhesive layer, second adhesive layer and second wrinkle-proof support layer forms sound transmission channel, first wrinkle-proof support layer and second wrinkle-proof support layer clamp sound transmission membrane body, form the support effect to sound transmission membrane body, can ensure the consistent rigidity between first wrinkle-proof support layer, second wrinkle-proof support layer and sound transmission membrane body, is favorable to ensuring the flatness of sound transmission membrane body, simultaneously, first wrinkle-proof support layer is acoustic mesh cloth, can completely cover sound transmission membrane body, can play the support effect to sound transmission membrane body when being impacted by external water pressure, improves the water pressure resistance, and, the whole support structure is more rigid, and the whole flatness effect of sound transmission membrane body is better. In addition, the acoustic mesh cloth has low high-frequency sound loss and large air permeability. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the utility model embodiment.

[0021] In the drawing, 100, wrinkle-proof sound transmission membrane main body;200, sound transmission channel;1, first wrinkle-proof support layer;2, first adhesive layer;3, sound transmission membrane body;4, second adhesive layer;5, second wrinkle-proof support layer;6, sealing compression layer;7, third adhesive layer;8, wear-resistant layer;9, waterproof adhesive tape layer. DETAILED DESCRIPTION

[0022] The specific embodiment of the utility model is further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0023] In the description of the utility model, it should be understood that the phrase "comprising" used in the utility model specification means that the features, integers, steps, operations, components and / or assemblies exist, but does not exclude the existence or addition of one or more other features, integers, steps, operations, components, assemblies and / or their groups. It should be understood that when we call the component "connected" to another component, it can be directly connected to other components, or there can be intermediate components. The phrase "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0024] As Figure 1As shown, the utility model relates to a kind of wrinkle-proof sound-transmitting membrane assemblies, including wrinkle-proof sound-transmitting membrane main body 100, the middle part of wrinkle-proof sound-transmitting membrane main body 100 is equipped with sound-transmitting passage 200, wrinkle-proof sound-transmitting membrane main body 100 includes first wrinkle-proof support layer 1, first adhesive layer 2, sound-transmitting membrane body 3, second adhesive layer 4 and second wrinkle-proof support layer 5 that are sequentially stacked, first wrinkle-proof support layer 1 is acoustic mesh cloth, second wrinkle-proof support layer 5 is annular, the edge area of both sides of sound-transmitting membrane body 3 is respectively through first adhesive layer 2 and second adhesive layer 4 with first wrinkle-proof support layer 1 and second wrinkle-proof support layer 5 adhesion fixed, first wrinkle-proof support layer 1 and sound-transmitting membrane body 3 shield sound-transmitting passage 200.

[0025] In the utility model, wrinkle-proof sound-transmitting membrane main body 100 includes first wrinkle-proof support layer 1, first adhesive layer 2, sound-transmitting membrane body 3, second adhesive layer 4 and second wrinkle-proof support layer 5 that are sequentially stacked, the outer edge area of first wrinkle-proof support layer 1 is fixed with sound-transmitting membrane body 3 by first adhesive layer 2, and the outer edge area of second wrinkle-proof support layer 5 is fixed with sound-transmitting membrane body 3 by second adhesive layer 4, so first adhesive layer 2 and second adhesive layer 4 are annular, and second wrinkle-proof support layer 5 is also annular, the hollow place inside first adhesive layer 2, second adhesive layer 4 and second wrinkle-proof support layer 5 forms sound-transmitting passage 200, and first wrinkle-proof support layer 1 and second wrinkle-proof support layer 5 clamp sound-transmitting membrane body 3, to form the support effect of sound-transmitting membrane body 3, can ensure the consistent rigidity between first wrinkle-proof support layer 1, second wrinkle-proof support layer 5 and sound-transmitting membrane body 3, to facilitate ensuring the flatness of sound-transmitting membrane body 3, meanwhile, first wrinkle-proof support layer 1 is acoustic mesh cloth, can completely cover sound-transmitting membrane body 3, can play the support effect of sound-transmitting membrane body 3 when being impacted by external water pressure, improves water pressure resistance, and moreover, the whole support structure is more rigid, and the overall flatness effect of sound-transmitting membrane body 3 is better. In addition, the high-frequency sound loss of acoustic mesh cloth is low, and the air permeability is large.

[0026] In the embodiment, the wrinkle-proof sound-transmitting membrane main body 100 further includes sealing compression layer 6, the sealing compression layer 6 is annular, and the sealing compression layer 6 is arranged on the side of the first wrinkle-proof support layer 1 away from the sound-transmitting membrane body 3.

[0027] Specifically, the sealing compression layer 6 is made of PU foam or rubber, the thickness of the sealing compression layer 6 is 200-1000um, so that it can be compressed by more than 20% under 0.5Mpa pressure, has good step difference absorption and sealing capacity. And high-temperature resilience is greater than 80% or more, to ensure long-term reliable sealing. In addition, when the sealing compression layer 6 adopts PU foam, the density is not less than 25lbs / ft3, which is conducive to the sound cavity sealing effect.

[0028] Preferably, the thickness of the sealing compression layer 6 is Tum, the inner diameter of the sealing compression layer 6 is Dum, and T / D≤0.5.

[0029] That is, the thickness of the sealing compression layer 6 is less than 1 / 2 of the inner diameter of the sealing compression layer 6, preferably T / D≤1 / 3, so as to avoid blocking the sound transmission channel 200 in the case of assembly inclination of the sealing compression layer 6.

[0030] Further, the anti-wrinkle sound transmission film body 100 further comprises a third adhesive layer 7, and the sealing compression layer 6 is fixedly attached to the side of the first anti-wrinkle support layer 1 away from the sound transmission film body 3 through the third adhesive layer 7, so as to ensure the stability and waterproofness of the attachment of the sealing compression layer 6 and the first anti-wrinkle support layer 1.

[0031] Still further, the anti-wrinkle sound transmission film body 100 further comprises a wear-resistant layer 8 made of PET, the thickness of the wear-resistant layer 8 is 10-50um, the wear-resistant layer 8 is annular, and the wear-resistant layer 8 is located at the side of the sealing compression layer 6 away from the first anti-wrinkle support layer 1.

[0032] Through the arrangement of the wear-resistant layer 8, the wear resistance of the sealing compression layer 6 in production, assembly and daily use can be improved, and the powder falling from the sealing compression layer 6 on the sound transmission film body 3 can be avoided to affect the sound quality.

[0033] In the embodiment, the anti-wrinkle sound transmission film body 100 further comprises a waterproof adhesive tape layer 9, the thickness of the waterproof adhesive tape layer 9 is 100-500um, and the waterproof adhesive tape layer 9 is located at the side of the second anti-wrinkle support layer 5 away from the sound transmission film body 3.

[0034] Through the arrangement of the waterproof adhesive tape layer 9, the stability and waterproofness of the attachment of the waterproof adhesive tape layer 9 and the second anti-wrinkle support layer 5 can be ensured.

[0035] In the embodiment, the outer edge of the sound transmission film body 3 is located between the outer edge and the inner edge of the first adhesive layer 2 and the second adhesive layer 4.

[0036] Specifically, the distance between the inner edge of the first adhesive layer 2 and the second adhesive layer 4 and the outer edge of the sound transmission film body 3 is greater than 0.5mm, and the distance between the outer edge of the first adhesive layer 2 and the second adhesive layer 4 and the outer edge of the sound transmission film body 3 is greater than 0.2mm, that is, the first adhesive layer 2 and the second adhesive layer 4 can completely wrap the outer edge of the sound transmission film body 3, so as to ensure sufficient adhesive area to guarantee the reliability of the structure, and the sound transmission film body 3 is not easy to delaminate when peeled.

[0037] In the embodiment, the thickness of the sound permeable film body 3 is 5-100 um.

[0038] In the embodiment, the thickness of the first wrinkle prevention support layer 1 is greater than or equal to 30 um, so as to provide a certain anti-wrinkle function to have sufficient support effect.

[0039] In the embodiment, the second wrinkle prevention support layer 5 is made of PET, and the thickness of the second wrinkle prevention support layer 5 is greater than or equal to 30 um, so as to provide a certain anti-wrinkle function to have sufficient support effect.

[0040] In the embodiment, the first adhesive layer 2, the second adhesive layer 4 and the third adhesive layer 7 can be acrylic glue or hot melt glue, the thickness of the first adhesive layer 2 is 10-50 um, the thickness of the second adhesive layer 4 is 20-50 um, and the thickness of the third adhesive layer 7 is greater than 20 um, so as to ensure the stability and waterproofness of structural adhesion. In addition, the thickness of the first adhesive layer 2 is 10-50 um, so as to ensure the consistent rigidity between the sound permeable film body 3 and the first wrinkle prevention support layer 1, reduce the wrinkles and adhesive balance of the sound permeable film body 3; the thickness of the second adhesive layer 4 is 20-50 um, so as to ensure the consistent rigidity between the sound permeable film body 3 and the second wrinkle prevention support layer 5, reduce the wrinkles and adhesive balance of the sound permeable film body 3.

[0041] The utility model also relates to an electronic equipment, including the wrinkle prevention sound permeable film subassembly.

[0042] The electronic equipment adopts the wrinkle prevention sound permeable film subassembly, so as to have better acoustic effect.

[0043] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled person in the art, on the premise of not departing from the technical principle of the utility model, a plurality of improvements and replacements can be made, and these improvements and replacements should be regarded as the protection range of the utility model.

Claims

1. An acoustically transparent membrane assembly for preventing wrinkles, the assembly comprising: The anti-wrinkle sound-permeable film body has a sound-permeable passage in the middle part, and comprises a first anti-wrinkle supporting layer, a first adhesive layer, a sound-permeable film body, a second adhesive layer and a second anti-wrinkle supporting layer which are sequentially stacked, the first anti-wrinkle supporting layer is an acoustic mesh cloth, the second anti-wrinkle supporting layer is annular, the edges of the two sides of the sound-permeable film body are respectively fixedly connected with the first anti-wrinkle supporting layer and the second anti-wrinkle supporting layer through the first adhesive layer and the second adhesive layer, and the first anti-wrinkle supporting layer and the sound-permeable film body shield the sound-permeable passage.

2. The crease-proof, acoustically transparent membrane assembly of claim 1, wherein, The anti-wrinkle sound-permeable film body further comprises a sealing compression layer, the sealing compression layer is annular, and the sealing compression layer is arranged on the side of the first anti-wrinkle supporting layer away from the sound-permeable film body.

3. The crease-proof, acoustically transparent membrane assembly of claim 2, wherein, The anti-wrinkle sound-permeable film body further comprises a third adhesive layer, and the sealing compression layer is fixedly connected with the side of the first anti-wrinkle supporting layer away from the sound-permeable film body through the third adhesive layer.

4. The crease-proof, acoustically transparent membrane assembly of claim 2, wherein, The anti-wrinkle sound-permeable film body further comprises a wear-resistant layer, the wear-resistant layer is annular, and the wear-resistant layer is arranged on the side of the sealing compression layer away from the first anti-wrinkle supporting layer.

5. The anti-creeping acoustic transparency film assembly of claim 4, wherein, The wear-resistant layer is made of PET.

6. The crease-proof, acoustically transparent membrane assembly of claim 2, wherein, The thickness of the sealing compression layer is Tum, the inner diameter of the sealing compression layer is Dum, and T / D is less than or equal to 0.

5.

7. The crease-proof, acoustically transparent membrane assembly of claim 2, wherein, The sealing compression layer is made of PU foam or rubber.

8. The crease-proof, acoustically transparent membrane assembly of claim 1, wherein, The anti-wrinkle sound-permeable film body further comprises a waterproof adhesive tape layer, and the waterproof adhesive tape layer is arranged on the side of the second anti-wrinkle supporting layer away from the sound-permeable film body.

9. The crease-proof, acoustically transparent membrane assembly of claim 1, wherein, The outer edge of the sound-permeable film body is located between the outer edge and the inner edge of the first adhesive layer and the second adhesive layer.

10. An electronic device, comprising: The anti-wrinkle sound-permeable film assembly comprises the anti-wrinkle sound-permeable film body according to any one of claims 1-9.

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