Voice diaphragm protection structure and loudspeaker

Abstract

The invention relates to a voice diaphragm protection structure and a loudspeaker, the voice diaphragm protection structure comprises a voice diaphragm vibration cantilever and a voice diaphragm dome, one side of the voice diaphragm dome is fixedly attached to the voice diaphragm vibration cantilever, and the voice diaphragm protection structure further comprises a protection film; compared with the prior art that the voice diaphragm dome is easily scratched after being pressed and touched by a hard object in the assembling process of the loudspeaker, the loudspeaker has the advantages that the voice diaphragm dome can be protected in the assembling process of the loudspeaker, the voice diaphragm dome is prevented from being scratched, and the service life of the loudspeaker is prolonged, so that the service life of the loudspeaker is prolonged, and the service life of the loudspeaker is prolonged. The voice diaphragm ball top is prevented from being scratched after being pressed and touched by a hard object, and the product percent of pass is greatly improved; the loudspeaker is provided with the voice diaphragm protection structure and has the same technical effect.

Description

Technical Field

[0001] The present invention relates to the technical field of speakers, and particularly relates to a sound film protection structure and a speaker. Background Art

[0002] The sound film structure of a speaker includes a sound film vibration cantilever and a sound film dome. Among them, the role of the sound film vibration cantilever is to be forced to vibrate by the voice coil to generate sound waves. The sound film dome is fixedly attached to the exact center of the sound film vibration cantilever. It has the characteristics of light weight and good rigidity, and its role is to increase the vibration stability of the sound film vibration cantilever and prevent the sound film vibration cantilever from generating splitting vibration in the high-frequency band. In the prior art, the anti-pressing ability of the sound film dome is poor, and it is easy to cause scratches on the sound film dome after being pressed and touched by a hard object during the assembly process of the speaker. Summary of the Invention

[0003] The first object of the present invention is to provide a sound film protection structure for the problem that the sound film dome is easily scratched after being pressed and touched by a hard object during the assembly process of the speaker in the prior art; the second object of the present invention is to provide a speaker.

[0004] In order to achieve the above first object, the technical solution adopted by the present invention is:

[0005] A sound film protection structure includes a sound film vibration cantilever and a sound film dome. One side of the sound film dome is fixedly attached to the sound film vibration cantilever, and further includes a protective film; the protective film has static electricity and adheres to the side of the sound film dome away from the sound film vibration cantilever by relying on the static electricity.

[0006] With the present invention adopting the foregoing technical solution, by setting a protective film with static electricity and adhering it to the side of the sound film dome away from the sound film vibration cantilever by relying on the static electricity, the protective film can protect the sound film dome and avoid scratches on the sound film dome during the assembly process of the speaker. After the speaker is assembled, the protective film can be removed, which is convenient to operate. And because the protective film is adhered to the sound film dome by static electricity, no traces will be left after removing the protective film. Compared with the problem in the prior art that the sound film dome is easily scratched after being pressed and touched by a hard object during the assembly process of the speaker, the present invention can protect the sound film dome during the assembly process of the speaker, avoid scratches on the sound film dome after being pressed and touched by a hard object, and greatly improve the product qualification rate.

[0007] Further, the protective film is a PET protective film; the protective film made of PET material has the advantages of light weight, high strength, good transparency and gas barrier property, non-toxic, odorless, etc., and can form good protection for the sound film dome.

[0008] Furthermore, the thickness of the PET protective film ranges from 0.05 mm to 0.15 mm; the PET protective film is relatively small in thickness, low in cost, and sufficient to protect the dome of the sound membrane.

[0009] Furthermore, along the direction away from the diaphragm vibration cantilever, the diaphragm dome includes a first aluminum layer, a PMI foam layer and a second aluminum layer fixedly connected in sequence; the diaphragm dome of this structure has the characteristics of light weight and good rigidity.

[0010] Furthermore, the thickness of the dome of the diaphragm is in the range of 0.4 mm to 0.5 mm; the dome of the diaphragm in this thickness range can well increase the vibration stability of the diaphragm vibration cantilever.

[0011] Furthermore, the first aluminum material layer and the PMI foam layer are connected by gluing, and the PMI foam layer and the second aluminum material layer are connected by gluing; the connection is firm and reliable to avoid falling off.

[0012] Furthermore, one side of the diaphragm ball top is glued and fixed to the diaphragm vibration cantilever; the connection is firm and reliable, preventing the diaphragm ball top from falling off the diaphragm vibration cantilever.

[0013] To achieve the second purpose, the present invention adopts the following technical solution:

[0014] A loudspeaker comprises the above-mentioned diaphragm protection structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the diaphragm dome can be protected during the assembly of the speaker to prevent the diaphragm dome from being scratched by hard objects, thereby greatly improving the product qualification rate; the protective film made of PET material has the advantages of light weight, high strength, good transparency and gas barrier properties, non-toxicity, and odorlessness, and can provide good protection for the diaphragm dome; the diaphragm dome includes a first aluminum layer, a PMI foam layer, and a second aluminum layer fixedly connected in sequence, and the diaphragm dome of this structure is light weight and has good rigidity; the speaker has the same technical effect as the aforementioned diaphragm protection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exploded view of the present invention;

[0017] Figure 2 It is a cross-sectional view of the present invention.

[0018] Markings in the figure: 1-diaphragm vibration cantilever, 2-diaphragm dome, 3-protective film, 21-first aluminum layer, 22-PMI foam layer, 23-second aluminum layer. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Embodiment 1. This embodiment provides a sound film protection structure, as Figure 1 - Figure 2 shown, including a sound film vibration cantilever 1 and a sound film dome 2. One side of the sound film dome 2 is fixedly attached to the sound film vibration cantilever 1, and further includes a protective film 3; the protective film 3 has static electricity and adheres to the side of the sound film dome 2 away from the sound film vibration cantilever 1 by electrostatic adsorption; the protective film 3 can cover the sound film dome 2; both the protective film 3 and the sound film dome 2 are rectangular in shape;

[0022] The protective film 3 is a PET protective film; the thickness range of the PET protective film is 0.05 mm to 0.15 mm; the preferred thickness is 0.1 mm;

[0023] Along the direction away from the sound film vibration cantilever 1, the sound film dome 2 includes a first aluminum layer 21, a PMI foam layer 22 and a second aluminum layer 23 fixedly connected in sequence; the thickness range of the sound film dome 2 is 0.4 mm to 0.5 mm;

[0024] The first aluminum layer 21 and the PMI foam layer 22 are adhesively connected, and the PMI foam layer 22 and the second aluminum layer 23 are adhesively connected;

[0025] One side of the sound film dome 2 is adhesively fixed to the sound film vibration cantilever 1.

[0026] During the assembly process of a conventional speaker, the average data of scratches on the sound film dome 2 is about 15%; after adopting the structure of this new type, this defective data can be controlled within 1%.

[0027] The present invention adopting the foregoing technical solution forms a protective film 3 with static electricity and adsorbs it on the side of the voice coil dome 2 away from the voice coil vibration cantilever 1 by static electricity. The protective film 3 can protect the voice coil dome 2 to avoid being scratched during the assembly process of the speaker. After the speaker assembly is completed, the protective film 3 can be removed, which is convenient to operate. And since the protective film 3 is attached to the voice coil dome 2 by static electricity, no trace will be left after removing the protective film 3. Compared with the problem that the voice coil dome is easily scratched after being pressed and touched by hard objects during the assembly process of the prior art speaker, the present invention can protect the voice coil dome during the assembly process of the speaker to avoid being scratched after being pressed and touched by hard objects, greatly improving the product qualification rate; the protective film made of PET material has the advantages of light weight, high strength, good transparency and gas barrier property, non-toxic, odorless, etc., and can form good protection for the voice coil dome; the voice coil dome includes a first aluminum layer, a PMI foam layer and a second aluminum layer fixedly connected in sequence. The voice coil dome with this structure has the characteristics of light weight and good rigidity.

[0028] Embodiment 2, a speaker, which includes the above-mentioned voice coil protection structure.

[0029] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sound diaphragm protection structure, comprising a sound diaphragm vibration cantilever (1) and a sound diaphragm dome (2), wherein one side of the sound diaphragm dome (2) is fixedly attached to the sound diaphragm vibration cantilever (1), characterized in that: It also includes a protective film (3); the protective film (3) has static electricity and relies on the static electricity to be adsorbed on the side of the diaphragm ball top (2) away from the diaphragm vibration cantilever (1).

2. The sound diaphragm protection structure according to claim 1, characterized in that: The protective film (3) is a PET protective film.

3. The sound diaphragm protection structure according to claim 2, characterized in that: The thickness of the PET protective film ranges from 0.05 mm to 0.15 mm.

4. The sound diaphragm protection structure according to claim 1, characterized in that: Along the direction away from the diaphragm vibration cantilever (1), the diaphragm dome (2) comprises a first aluminum material layer (21), a PMI foam layer (22) and a second aluminum material layer (23) which are fixedly connected in sequence.

5. The sound diaphragm protection structure according to claim 4, characterized in that: The thickness of the dome of the diaphragm (2) ranges from 0.4 mm to 0.5 mm.

6. The sound diaphragm protection structure according to claim 4, characterized in that: The first aluminum material layer (21) and the PMI foam layer (22) are connected by gluing, and the PMI foam layer (22) and the second aluminum material layer (23) are connected by gluing.

7. The sound diaphragm protection structure according to claim 1, characterized in that: One side of the diaphragm dome (2) is glued and fixed on the diaphragm vibration cantilever (1).

8. A loudspeaker, characterized in that: A sound membrane protection structure comprising any one of claims 1-7.

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