Voice diaphragm protection structure and loudspeaker

Abstract

The utility model 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 also comprises a protection film; compared with the prior art that the voice diaphragm dome is easy to scratch after being pressed and touched by a hard object in the assembling process of the loudspeaker, the loudspeaker provided by the utility model can protect the voice diaphragm dome in the assembling process of the loudspeaker, so that the voice diaphragm dome is prevented from being scratched, and the loudspeaker is prevented from being scratched when being pressed and touched by the hard object in the assembling process of the loudspeaker. 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] This utility model relates to the field of loudspeaker technology, specifically to a diaphragm protection structure and a loudspeaker. Background Technology

[0002] The diaphragm structure of a loudspeaker includes a diaphragm cantilever and a diaphragm dome. The diaphragm cantilever is forced to vibrate by the voice coil to generate sound waves. The diaphragm dome is fixedly attached to the center of the diaphragm cantilever and is lightweight and rigid. Its function is to increase the vibration stability of the diaphragm cantilever and prevent it from producing segmented vibrations in the high-frequency range. In existing technology, the diaphragm dome has poor resistance to pressure; during loudspeaker assembly, it is easily scratched by being pressed or bumped by hard objects. Utility Model Content

[0003] The first objective of this invention is to provide a diaphragm protection structure to address the problem that the diaphragm dome is easily scratched when pressed or touched by a hard object during the assembly process of a loudspeaker in the prior art. The second objective of this invention is to provide a loudspeaker.

[0004] To achieve the aforementioned primary objective, the technical solution adopted by this utility model is as follows:

[0005] A diaphragm protection structure includes a diaphragm vibrating cantilever and a diaphragm dome, one side of which is fixedly attached to the diaphragm vibrating cantilever. The structure also includes a protective film. The protective film is electrostatically charged and is attracted to the diaphragm dome on the side away from the diaphragm vibrating cantilever by the electrostatic charge.

[0006] The present invention, employing the aforementioned technical solution, uses an electrostatically attached protective film that is electrostatically adsorbed onto the dome of the diaphragm on the side away from the diaphragm vibrating cantilever. This protective film safeguards the dome of the diaphragm, preventing scratches during speaker assembly. The protective film can be easily removed after speaker assembly, making the process convenient. Furthermore, since the protective film is electrostatically applied to the dome, it leaves no trace after removal. Compared to existing technologies where the dome of the diaphragm is easily scratched by hard objects during speaker assembly, this invention protects the dome of the diaphragm during assembly, significantly improving product qualification rates.

[0007] Furthermore, the protective film is a PET protective film; PET protective films have advantages such as light weight, high strength, good transparency and gas barrier properties, non-toxicity, and odorlessness, and can provide excellent protection for the sound diaphragm 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 thin, has low cost, and is sufficient to protect the dome of the sound diaphragm.

[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 that are fixedly connected in sequence; this type of diaphragm dome has the characteristics of being lightweight and having good rigidity.

[0010] Furthermore, the thickness of the diaphragm dome ranges from 0.4 mm to 0.5 mm; this thickness range of the diaphragm dome can effectively increase the vibration stability of the diaphragm vibrating cantilever.

[0011] Furthermore, the first aluminum layer and the PMI foam layer are connected by adhesive, and the PMI foam layer and the second aluminum layer are connected by adhesive; the connection is firm and reliable, preventing detachment.

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

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

[0014] A loudspeaker including the aforementioned diaphragm protection structure.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: It can protect the diaphragm dome during the speaker assembly process, preventing scratches caused by hard objects pressing or bumping it, thus significantly improving the product qualification rate; the PET protective film has advantages such as light weight, high strength, good transparency and gas barrier properties, and is non-toxic and odorless, providing excellent protection for the diaphragm dome; the diaphragm dome comprises a first aluminum layer, a PMI foam layer, and a second aluminum layer, which are sequentially fixedly connected, resulting in a lightweight and rigid diaphragm dome; the speaker achieves the same technical effects as the aforementioned diaphragm protection structure. Attached image description:

[0016] Figure 1 This is an exploded view of the present invention;

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

[0018] The markings in the diagram are: 1-diaphragm vibration cantilever, 2-diaphragm dome, 3-protective film, 21-first aluminum layer, 22-PMI foam layer, 23-second aluminum layer. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 this utility model and are not intended to limit this utility model.

[0021] Example 1: This example provides a diaphragm protection structure, such as... Figures 1-2 As shown, it includes a diaphragm vibrating cantilever 1 and a diaphragm dome 2. One side of the diaphragm dome 2 is fixedly attached to the diaphragm vibrating cantilever 1. It also includes a protective film 3. The protective film 3 is electrostatic and is attracted to the side of the diaphragm dome 2 away from the diaphragm vibrating cantilever 1 by electrostatic adsorption. The protective film 3 can cover the diaphragm dome 2. Both the protective film 3 and the diaphragm dome 2 are rectangular in shape.

[0022] Protective film 3 is a PET protective film; the thickness of the PET protective film ranges from 0.05mm to 0.15mm; preferably, the thickness is 0.1mm;

[0023] Along the direction away from the diaphragm vibrating cantilever 1, the diaphragm dome 2 includes a first aluminum layer 21, a PMI foam layer 22, and a second aluminum layer 23 that are fixedly connected in sequence; the thickness of the diaphragm dome 2 ranges from 0.4 mm to 0.5 mm.

[0024] The first aluminum layer 21 and the PMI foam layer 22 are connected by adhesive, and the PMI foam layer 22 and the second aluminum layer 23 are connected by adhesive.

[0025] One side of the diaphragm dome 2 is glued and fixed to the diaphragm vibrating cantilever 1.

[0026] In conventional loudspeaker assembly, the average defect rate due to scratches on the diaphragm dome is around 15%; with this new structure, this defect rate can be reduced to less than 1%.

[0027] The present invention, employing the aforementioned technical solution, utilizes an electrostatically attached protective film 3, which is electrostatically adsorbed onto the diaphragm dome 2 on the side away from the diaphragm vibrating cantilever 1. The protective film 3 protects the diaphragm dome 2, preventing scratches during speaker assembly. Once the speaker assembly is complete, the protective film 3 can be easily removed. Furthermore, because the protective film 3 is electrostatically attached to the diaphragm dome 2, removing it leaves no trace. This is significantly more convenient than the methods used in the prior art during speaker assembly. The problem of easily scratched diaphragm domes when pressed or bumped by hard objects is addressed by this invention, which protects the diaphragm domes during speaker assembly, preventing scratches and significantly improving product qualification rates. The PET protective film is lightweight, high-strength, transparent, has good gas barrier properties, and is non-toxic and odorless, providing excellent protection for the diaphragm domes. The diaphragm domes consist of a first aluminum layer, a PMI foam layer, and a second aluminum layer, which are sequentially fixedly connected. This structure results in a lightweight and rigid diaphragm dome.

[0028] Example 2: A loudspeaker including the above-described diaphragm protection structure.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A diaphragm protection structure, comprising a diaphragm vibration cantilever (1) and a diaphragm dome (2), wherein one side of the diaphragm dome (2) is fixedly attached to the diaphragm vibration cantilever (1), characterized in that: It also includes a protective film (3); the protective film (3) is electrostatically charged and is attracted to the side of the diaphragm dome (2) away from the diaphragm vibrating cantilever (1) by means of the electrostatic charge.

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 vibrating cantilever (1), the diaphragm dome (2) includes a first aluminum layer (21), a PMI foam layer (22), and a second aluminum layer (23) that are fixedly connected in sequence.

5. The sound diaphragm protection structure according to claim 4, characterized in that: The thickness of the diaphragm dome (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 layer (21) and the PMI foam layer (22) are connected by adhesive, and the PMI foam layer (22) and the second aluminum layer (23) are connected by adhesive.

7. The sound diaphragm protection structure according to claim 1, characterized in that: The diaphragm dome (2) is glued to one side of the diaphragm vibrating cantilever (1).

8. A loudspeaker, characterized in that: The sound diaphragm protection structure includes any one of claims 1-7.

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