Vibration module, loudspeaker and electronic equipment

Abstract

The utility model relates to a vibration module, a loudspeaker and an electronic device, and the module comprises a vibration unit which comprises a vibrating diaphragm; the coil is arranged on the vibration unit and is provided with two coil leads; a diaphragm electrode including a positive electrode and a negative electrode; wherein the two coil leads are fixed on the vibration unit through a conductive adhesive and are connected to the positive electrode and the negative electrode through the conductive adhesive. According to the vibration module provided by the utility model, the vibration membrane electrode and the coil lead wire are directly connected through the conductive adhesive, the coil lead wire and the vibration membrane electrode can be conducted while the coil lead wire is fixed, and compared with a vibration module in the prior art, the vibration module provided by the utility model not only reduces dispensing and welding processes, but also can save the space in the vibration module; when the vibration module is applied to the loudspeaker and the electronic equipment with the loudspeaker, the product can be lighter and thinner.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a vibration module, a loudspeaker and an electronic device. Background Art

[0002] In the current speakers of the prior art, the coil and the vibration unit are glued together, and leads are set at the ends of the coil and welded to the positive and negative pins. At the same time, in order to block the impact of vibration, it is necessary to use hot melt adhesive or other adhesives to fix the leads to the frame or other structures before welding.

[0003] Because the lead bending, gluing and welding are required, the space of the speaker will be occupied. If the lead bending and welding processes can be omitted, a certain amount of space will be released, making the speaker thinner, which is conducive to the lightweight and thinning of terminal products such as mobile phones and tablets. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the problem in the prior art that due to the bending, gluing and welding of the coil leads, space needs to be reserved in the speaker, resulting in a thicker overall thickness of the speaker. A vibration module, a speaker and an electronic device are provided, which directly connect the vibration membrane electrode and the coil lead with conductive glue, which not only reduces the gluing and welding steps, but also saves space in the vibration module, making the product lighter and thinner.

[0005] In order to solve the above technical problems, the utility model provides a vibration module, comprising:

[0006] A vibration unit, including a diaphragm;

[0007] A coil, arranged on the vibration unit, having two coil leads;

[0008] A vibrating membrane electrode, including a positive electrode and a negative electrode;

[0009] Wherein: the two coil leads are both fixed to the vibration unit through conductive glue, and are connected to the positive electrode and the negative electrode through the conductive glue.

[0010] In one embodiment of the present invention, the two coil leads are fixed to the diaphragm through conductive glue, and are connected to the positive electrode and the negative electrode through the conductive glue.

[0011] In one embodiment of the utility model, the vibration unit also includes a spring wave, which is arranged on the outside of the coil and fixed to the frame by mounting glue, and is independent of the diaphragm. The two coil leads are fixed to the spring wave by conductive glue and connected to the positive electrode and the negative electrode by the conductive glue.

[0012] In an embodiment of the present invention, the coil is bonded to the diaphragm by a fixing glue, and the coil is bonded to the elastic wave by a fixing glue.

[0013] In one embodiment of the present invention, the coil is an enameled metal wire coil, and the coil lead includes a connecting portion, which is a metal wire core with an outer layer of paint removed.

[0014] In an embodiment of the present invention, the conductive adhesive completely covers the connecting portion.

[0015] In one embodiment of the utility model, the conductive adhesive is a nano conductive adhesive, the nano conductive adhesive contains nano metal, the lap impedance of the conductive adhesive is 20-1000 mΩ, and the elongation at break of the conductive adhesive is greater than 20%.

[0016] In one embodiment of the present invention, the coil is insulated and attached to the vibration unit by fixing glue.

[0017] In one embodiment of the present invention, the vibrating membrane electrode is fixed on a frame.

[0018] In order to solve the above technical problems, the utility model also provides a loudspeaker, comprising the above vibration module.

[0019] In order to solve the above technical problem, the utility model also provides an electronic device, including the above speaker.

[0020] The above technical solution of the utility model has the following advantages compared with the prior art:

[0021] The vibration module described in the utility model directly connects the vibration membrane electrode and the coil lead with conductive glue, which can fix the coil lead while making the coil lead and the vibration membrane electrode conductive. Compared with the vibration module in the prior art, it not only reduces the glue dispensing and welding processes, but also saves space in the vibration module. Applying the vibration module of the utility model to speakers and electronic devices with speakers can make the products lighter and thinner. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0023] Figure 1 It is a structural schematic diagram of a vibration module of the prior art;

[0024] Figure 2 It is a structural schematic diagram of an embodiment of the vibration module of the utility model;

[0025] Figure 3 It is a structural schematic diagram of another embodiment of the vibration module of the utility model.

[0026] Explanation of the reference numerals in the specification: 1. vibration unit; 11. diaphragm; 12. spring wave; 2. coil; 21. coil lead; 3. vibration membrane electrode; 4. hot melt adhesive; 5. frame; 6. fixing adhesive; 7. conductive adhesive. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0028] Reference Figure 1 As shown, in the prior art, the vibration module of the loudspeaker includes: a vibration unit 1, a coil 2 and a vibration membrane electrode 3 arranged on the vibration unit 1. In order to make the coil 2 conductive with the external circuit, generally, the coil leads 21 at both ends of the coil 2 are welded to the vibration membrane electrode 3. In order to block the influence of vibration on the welding point, it is necessary to fix the lead on the frame 5 or other structures with adhesives such as hot melt adhesive 4 before welding, so that the position of the welding point will not be affected by the vibration. However, because the coil lead 21 needs to be bent, glued and welded, it will occupy the internal space of the loudspeaker, which will affect the thinness of the loudspeaker and the products using the loudspeaker.

[0029] To solve the above problems, refer to Figure 2 As shown, the utility model provides a vibration module, including: a vibration unit 1, a coil 2 and a vibration film electrode 3, wherein: the coil 2 is arranged on the vibration unit 1, the coil 2 is insulated and attached to the vibration unit 1 through a fixing glue 6, the vibration film electrode 3 is fixed on a frame 5, the coil 2 has two coil leads 21, the vibration film electrode 3 includes a positive electrode and a negative electrode, the two coil leads 21 are fixed to the vibration unit 1 through a conductive glue 7, and are connected to the positive electrode and the negative electrode through the conductive glue 7; the conductive glue 7 is an adhesive having a certain conductivity after curing or drying, A variety of conductive materials can be connected together to form an electrical path between the connected materials. In the present embodiment, a conductive adhesive 7 is used to fix the coil lead 21 while making the coil lead 21 conductive with the vibration membrane electrode 3, thereby ensuring that the coil lead 21 and the vibration membrane electrode 3 will not be disconnected under certain vibration conditions. Compared with the vibration module of the prior art, it not only reduces the dispensing and welding steps and improves the preparation efficiency of the vibration module, but also saves space in the vibration module without the need for bending and fixing. The vibration module of the utility model is applied to speakers and electronic devices with speakers, which can make the product thinner and lighter.

[0030] Specifically, refer to Figure 2 As shown, in this embodiment, the vibration unit 1 includes a diaphragm 11, and the two coil leads 21 are fixed to the diaphragm 11 through a conductive glue 7, and are connected to the positive electrode and the negative electrode through the conductive glue 7, and the coil 2 is bonded to the diaphragm 11 through a fixing glue 6.

[0031] Reference Figure 3 As shown, in another embodiment, the vibration unit 1 also includes a spring wave 12, which is arranged on the outside of the coil 2 and fixed to the frame by mounting glue, and is independent of the diaphragm 11. The two coil leads 21 are fixed to the spring wave 12 by conductive glue 7, and connected to the positive electrode and the negative electrode by conductive glue 7. The coil 2 is bonded to the spring wave 12 by fixing glue, and the coil 2 is bonded to the diaphragm 11 by fixing glue 6.

[0032] Specifically, in order to further reduce the overlapping impedance between the coil lead 21 and the conductive adhesive 7, in this embodiment, the coil 2 is set to be an enameled metal wire coil, such as an enameled copper wire coil, and the coil lead 21 includes a connecting part, which is a metal wire core with the outer paint removed and expanded to become thicker and burst into wires. After the shape of the connecting part expands, the contact area between the connecting part and the conductive adhesive 7 can be increased, thereby achieving the purpose of reducing the overlapping impedance.

[0033] Specifically, in this embodiment, an infrared laser can be used to remove the enameled wire at the overlapping part of the coil lead 21, so that the connecting part at the overlapping part will expand and thicken and burst and split at the microscopic level; in actual operation, the power of the infrared laser is set at 40-100w, and the speed, frequency, power, etc. are adjusted according to the actual situation of the coil lead 21, so as to better achieve the effect of removing the enameled wire and causing the connecting part to expand and burst.

[0034] In this embodiment, the conductive glue 7 is set to fully cover the connecting part. For example, the conductive silver glue thickness of the conductive glue 7 is set to 20-80 um and the width is 0.5-4 mm, so that the conductive glue 7 fully covers the connecting part and ensures the conduction between the coil 2 and the vibration membrane electrode 3.

[0035] Specifically, the conductive adhesive 7 is mainly composed of a resin matrix, conductive particles, dispersing additives, and auxiliary agents. Preferably, the conductive adhesive 7 is a nano conductive adhesive, which has a high conductivity and a lap impedance of 20 to 1000 mΩ. The nano conductive adhesive has a certain flexibility, and its elongation at break is greater than 20%, and can be stretched and bonded. After the nano conductive adhesive 7 is stretched by 15%, the impedance increase does not exceed 100%, and it can still have a high conductivity at a certain stretching deformation. The nano conductive adhesive has good bonding performance.

[0036] Specifically, the nano-conductive adhesive contains nano-metal, and is made of nano-metal wires or nano-metal wires doped with nano-metal rods, nano-metal sheets, nano-metal particles, carbon nanotubes, graphene and other materials. In the nano-conductive adhesive, the length of the nano-metal wire is 10-40um, the diameter is 10-40nm, and the mass proportion of the nano-metal is not less than 10%, thereby ensuring that the nano-conductive adhesive has excellent conductivity.

[0037] Specifically, the nanometal is nanosilver, nanocopper, silver-coated copper, nanogold, etc. In this embodiment, the nanometal wire is preferably nanosilver wire, and the prepared conductive glue 7 is nanosilver conductive silver glue.

[0038] Based on the above-mentioned vibration module, the utility model also provides a speaker, including the above-mentioned vibration module, and an electronic device, including the above-mentioned speaker. Applying the vibration module of the utility model to the speaker and the electronic device with the speaker can make the product lighter and thinner.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A vibration module, characterized in that: include: A vibration unit, including a diaphragm; A coil, arranged on the vibration unit, having two coil leads; A vibrating membrane electrode, including a positive electrode and a negative electrode; Wherein: the two coil leads are both fixed to the vibration unit through conductive glue, and are connected to the positive electrode and the negative electrode through the conductive glue.

2. The vibration module according to claim 1, characterized in that: The two coil leads are both fixed on the diaphragm through conductive glue, and are connected to the positive electrode and the negative electrode through the conductive glue.

3. The vibration module according to claim 1, characterized in that: The vibration unit also includes a spring wave, which is arranged on the outside of the coil and fixed to the frame by mounting glue, and is independent of the diaphragm. The two coil leads are fixed to the spring wave by conductive glue and connected to the positive electrode and the negative electrode by the conductive glue.

4. The vibration module according to claim 3, characterized in that: The coil is bonded to the diaphragm by means of a fixing glue, and the coil is bonded to the elastic wave by means of a fixing glue.

5. The vibration module according to claim 1, characterized in that: The coil is an enameled metal wire coil, and the coil lead wire comprises a connecting portion, which is a metal wire core with an outer layer of paint removed.

6. The vibration module according to claim 5, characterized in that: The conductive adhesive completely covers the connecting portion.

7. The vibration module according to claim 1, characterized in that: The conductive adhesive is a nano conductive adhesive, which contains nano metals. The lap impedance of the conductive adhesive is 20-1000 mΩ, and the elongation at break of the conductive adhesive is greater than 20%.

8. The vibration module according to claim 1, characterized in that: The vibrating membrane electrode is fixed on the frame.

9. A loudspeaker, characterized in that: A vibration module comprising any one of claims 1 to 8.

10. An electronic device, characterized in that: Comprising the speaker as claimed in claim 9.

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