PU ceramic composite moving coil unit

Abstract

The utility model discloses a PU (Poly Urethane) ceramic composite moving coil unit, which relates to the field of moving coil units and comprises a mounting frame, a mounting groove is formed in the inner wall of the mounting frame, a magnet is mounted in the mounting groove, a magnetic sheet is mounted on one side of the magnet, a resistor is mounted on one side of the mounting frame, a PU vibrating diaphragm is adhered to the mounting frame, and a PEK (Polyether Ketone) dome is adhered to the PU vibrating diaphragm. A voice coil is adhered to one side of the PU vibrating diaphragm, and a transparent ceramic layer covers the PEK ball top through an electroplating process. According to the utility model, the PU vibrating diaphragm, the transparent ceramic layer and other structures are arranged, and the PU vibrating diaphragm and the transparent ceramic layer are mutually combined to form the PU composite ceramic diaphragm, so that the rigidity of the PU vibrating diaphragm can be improved, and the insufficient toughness caused by independent use of the ceramic diaphragm can be avoided, thereby effectively absorbing and reducing the sound vibration, and keeping the purity and definition of the sound; the sound emitted by the moving coil unit through the composite ceramic membrane is balanced in three frequencies and transparent in high frequency, the low frequency dives sufficiently and is elastic, and the sound effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic coil units, in particular to a PU ceramic composite dynamic coil unit. Background Art

[0002] The dynamic unit is the most common and ordinary driving unit in headphones. Its basic structure includes a diaphragm, a closed coil and a permanent magnet. When working, the closed coil receives sound electrical signals and generates a magnetic field. Under the action of the permanent magnet, this magnetic field causes the coil to drive the diaphragm to vibrate, thereby producing sound.

[0003] In the prior art, the dynamic unit uses an ordinary PU membrane which is commonly used in the market. Although the ordinary PU membrane has good toughness, it has the disadvantage of insufficient rigidity, which makes it difficult to produce a clear sound, and the high frequency is not good and the low frequency is dispersed. Therefore, a PU ceramic composite dynamic unit is needed to meet people's needs. Utility Model Content

[0004] The purpose of the utility model is to provide a PU ceramic composite dynamic coil unit to solve the problem that the ordinary PU membrane proposed in the above background technology has good toughness but insufficient rigidity, which makes it difficult to make the sound clear, and the high frequency is not good and the low frequency is dispersed.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PU ceramic composite dynamic coil unit, comprising a mounting frame, an inner wall of the mounting frame is provided with a mounting groove, a magnet is installed in the mounting groove, a magnetic sheet is installed on one side of the magnet, a resistor is installed on one side of the mounting frame, a PU diaphragm is bonded to the mounting frame, the PU diaphragm is a whole sheet, a PEK ball top is bonded to the PU diaphragm, a voice coil is bonded to one side of the PU diaphragm, and the PEK ball top is covered with a transparent ceramic layer through an electroplating process.

[0006] Preferably, an adhesive layer is bonded to the top of the PEK ball, and the adhesive layer is bonded to the surface of the PU diaphragm.

[0007] Preferably, the voice coil is located in the mounting groove, and the magnet and the magnetic sheet are both located in the voice coil.

[0008] Preferably, the PEK ball top and the transparent ceramic layer are both provided with an inwardly recessed groove.

[0009] Preferably, the PU diaphragm is made of polyurethane material, the PEK dome is made of PET polyester material, and the transparent ceramic layer is made of nano-scale inorganic ceramic particles.

[0010] The beneficial effects of the utility model are:

[0011] In the utility model, a PU composite ceramic membrane is formed by setting up structures such as a PU diaphragm and a transparent ceramic layer and by combining the PU diaphragm and the transparent ceramic layer. This can not only improve the rigidity of the PU diaphragm, but also avoid the insufficient toughness of using a ceramic membrane alone. It can effectively absorb and reduce the vibration of the sound and maintain the purity and clarity of the sound. The sound coming out of the dynamic unit through the composite ceramic membrane has balanced three frequencies, transparent high frequencies, sufficient low-frequency dive and elasticity, and better sound effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the PU ceramic composite dynamic coil unit proposed in the utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of the PU ceramic composite dynamic unit proposed in the utility model;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the PU ceramic composite dynamic coil unit proposed in the utility model;

[0015] Figure 4 This is a schematic diagram of the PEK ball top connection structure of the PU ceramic composite dynamic unit proposed in the utility model.

[0016] In the figure: 100, mounting frame; 200, mounting groove; 201, magnet; 202, magnetic sheet; 203, resistor; 300, PU diaphragm; 301, PEK dome; 302, voice coil; 303, transparent ceramic layer; 304, adhesive layer; 305, recessed groove. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Reference Figure 1-4The PU ceramic composite dynamic unit includes a mounting frame 100, an inner wall of the mounting frame 100 is provided with a mounting groove 200, a magnet 201 is installed in the mounting groove 200, a magnetic sheet 202 is installed on one side of the magnet 201, a resistor 203 is installed on one side of the mounting frame 100, a PU diaphragm 300 is bonded to the mounting frame 100, the PU diaphragm 300 is a whole sheet, a PEK ball top 301 is bonded to the PU diaphragm 300, a voice coil 302 is bonded on one side of the PU diaphragm 300, and the PEK ball top 301 is coated with a PEK film by an electroplating process. Covered with a transparent ceramic layer 303, the PU diaphragm 300 is a whole film, which is bonded to the PU diaphragm 300 on the PEK dome 301 through an adhesive layer 304, and then ceramic molecules are covered on the PEK dome 301 through an electroplating process to form a transparent ceramic layer 303, so that the PU diaphragm 300 and the transparent ceramic layer 303 form a whole, utilizing the high hardness and high density of the ceramic material to achieve the effect of improving the rigidity of the PU diaphragm 300, while solving the problem of insufficient toughness of a single ceramic film.

[0019] Furthermore, an adhesive layer 304 is bonded to the PEK dome 301 , and the adhesive layer 304 is bonded to the surface of the PU diaphragm 300 . The PEK dome 301 can be bonded to the PU diaphragm 300 through the adhesive layer 304 , thereby achieving connection between the PU diaphragm 300 and the PEK dome 301 .

[0020] Furthermore, the voice coil 302 is located in the mounting groove 200 , and the magnet 201 and the magnetic sheet 202 are both located in the voice coil 302 .

[0021] Furthermore, both the PEK dome 301 and the transparent ceramic layer 303 are provided with an inwardly recessed groove 305 . The design of the recessed groove 305 helps to reflect and focus the sound, thereby achieving the effect of optimizing the sound quality.

[0022] Furthermore, the PU diaphragm 300 is made of polyurethane material, and the PEK dome 301 is made of PET polyester material. Both the PU diaphragm 300 and the PEK dome 301 are made of transparent material. The transparent ceramic layer 303 is made of nano-scale inorganic ceramic particles. The polyurethane material has good elasticity and can effectively absorb and reduce sound vibrations. The inorganic ceramic material includes various different types of ceramic powders such as aluminum oxide, silicon oxide, zirconium oxide, and titanium oxide. These powders can be prepared into nano-scale particles by physical or chemical methods, and through processes such as spraying or dipping, a transparent film with excellent properties such as high transparency, high hardness, high corrosion resistance, high temperature oxidation resistance, high toughness and high wear resistance is formed.

[0023] Working principle of this utility model:

[0024] The PU diaphragm 300 is a whole film, which is bonded to the PU diaphragm 300 on the PEK dome 301 through an adhesive layer 304, and then ceramic molecules are covered on the PEK dome 301 through an electroplating process to form a transparent ceramic layer 303, so that the PU diaphragm 300 and the transparent ceramic layer 303 form a whole. The high hardness and high density of the ceramic material are utilized to improve the rigidity of the PU diaphragm 300, while solving the problem of insufficient toughness of a single ceramic film. The PU diaphragm 300 adopts polyurethane material and has good elasticity, which can effectively absorb and reduce sound vibrations, while the transparent ceramic layer 303 has excellent hardness and stability, which can maintain the purity and clarity of the sound of the dynamic unit.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A PU ceramic composite dynamic unit, comprising a mounting frame (100), characterized in that: The inner wall of the installation frame (100) is provided with an installation groove (200), a magnet (201) is installed in the installation groove (200), a magnetic sheet (202) is installed on one side of the magnet (201), a resistor (203) is installed on one side of the installation frame (100), a PU diaphragm (300) is bonded to the installation frame (100), the PU diaphragm (300) is a whole sheet, a PEK ball top (301) is bonded to the PU diaphragm (300), a voice coil (302) is bonded to one side of the PU diaphragm (300), and the PEK ball top (301) is covered with a transparent ceramic layer (303) through an electroplating process.

2. The PU ceramic composite dynamic unit according to claim 1, characterized in that: An adhesive layer (304) is bonded to the PEK ball top (301), and the adhesive layer (304) is bonded to the surface of the PU diaphragm (300).

3. The PU ceramic composite dynamic unit according to claim 1, characterized in that: The voice coil (302) is located in the mounting groove (200), and the magnet (201) and the magnetic sheet (202) are both located in the voice coil (302).

4. The PU ceramic composite dynamic unit according to claim 1, characterized in that: The PEK ball top (301) and the transparent ceramic layer (303) are both provided with an inwardly recessed groove (305).

5. The PU ceramic composite dynamic unit according to claim 1, characterized in that: The PU diaphragm (300) is made of polyurethane material, the PEK dome (301) is made of PET polyester material, and the transparent ceramic layer (303) is made of nano-scale inorganic ceramic particles.

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