CN211630382U

CN211630382U - Earphone micro-speaker

Info

Publication number: CN211630382U
Application number: CN201922487371.8U
Authority: CN
Inventors: 肖文基
Original assignee: Guangzhou Goodbass Electronic Technology Co ltd
Current assignee: Guangzhou Goodbass Electronic Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-02
Anticipated expiration: 2029-12-31

Abstract

The utility model provides an earphone micro-speaker, include: the basin frame, the basin frame is two hollow cylinder shell integrated into one piece, magnet is installed in the basin frame, the voice coil loudspeaker voice coil laminating is in the front side of magnet, the magnetic conductive plate laminating is between voice coil loudspeaker voice coil and magnet, the front side at the voice coil loudspeaker voice coil is installed to the padauk composite vibrating diaphragm, the visor is installed at the basin frame foremost and with padauk composite vibrating diaphragm, the voice coil loudspeaker voice coil, magnetic conductive plate and magnet involution in the basin frame, be provided with the tuning hole on the rear end lateral wall of basin frame, the tuning net laminating is on the tuning hole, the lateral surface at basin frame shell afterbody is fixed to the terminal block. The earphone micro-speaker adopts the rosewood composite vibrating diaphragm, and has the advantages of good rigidity, small density, proper internal damping, small distortion, high resolution, high elastic modulus, fine and soft sound, good high-frequency extension without being harsh, clear expression level for large dynamic and large scene, fine and soft human voice expression of the middle-frequency part, and clear and transparent performance, and rigid and powerful and thick low-frequency expression without being muddy.

Description

Earphone micro-speaker

Technical Field

The utility model relates to an electroacoustic product technical field, concretely relates to miniature loudspeaker of earphone.

Background

With the continuous development of digital electronic technology, portable electronic devices such as MP3 (music player), mobile phone, PAD (tablet computer) and the like having the function of playing audio signals are more and more diverse, and the applications thereof are more and more popular. The earphone can directly transmit the sound emitted by the various electronic devices to the ears of a user, thereby avoiding the influence of the noisy environment on the listening effect, providing a high-quality sound signal for the user, and simultaneously not interfering other surrounding people. The factors influencing the sound quality of the earphone mainly comprise a loudspeaker unit and wires, and particularly the quality of the loudspeaker unit directly determines the quality of sound.

For the most commonly used moving coil earphones, there are many factors affecting the quality of the speaker unit, and the diaphragm is one of the key components for determining whether the speaker unit has good quality. The diaphragm is a sensitive element to magnetic field changes, and when an electric signal passes through the coil, the magnetic field changes, which causes the diaphragm to deform under force. Because the electric signal changes very fast, leads to the high-speed vibration of vibrating diaphragm, and the vibration transmission of rethread vibrating diaphragm is for the air to the sound wave has been produced. In this process, the quality of the diaphragm determines the overall quality of the earphone.

The kind of vibrating diaphragm has a lot of, has paper vibrating diaphragm, wooden vibrating diaphragm, plastics vibrating diaphragm, metal vibrating diaphragm etc. generally in the earphone, the design requirement of vibrating diaphragm is that the quality is lighter more, rigidity is better for, such vibrating diaphragm can be completely converts the kinetic energy of coil into sound. For most of the moving coil earphones on the market at present, plastic diaphragms are basically adopted, and even earphones sold at thousands yuan price are often used.

The plastic diaphragm is a general name of various polymer compounds (including PET/PEN/PEI/PI/LCP/PEEK/PC/PPS/PAR, etc.), and the physical properties of each compound are different. They have in common that they are extremely plastic, easy to process and low in cost, but they are less rigid, if a better rigidity is to be obtained, at the expense of an increased diaphragm thickness. The diaphragm has small internal resistance and poor rigidity, so that the diaphragm is easy to cause large distortion and is difficult to truly restore the original sound. However, due to the cost advantage, most earphones on the market use plastic diaphragms.

The improvement of modern sound source technology, especially CD, SACD, DVD-Audio, etc., and the improvement of power amplifier, drive and lead the improvement of loudspeaker. As the requirements for speaker units and hence for diaphragms are higher and higher, new materials and new technologies are required to be developed to meet the requirements, and the relationship between the technical requirements of the speaker and the requirements for diaphragms is shown in the following table:

requirements for loudspeakers	Conditions required for the diaphragm
		Higher sensitivity	Small mass (small density)
Low distortion and good linearity	High elasticity, high internal damping, axial symmetry and air tightness
		Broad frequency band	High specific elasticity and good geometric shape
Uniformity of frequency response curve	Good geometrical shape and proper internal damping
		Reliability of	Heat-resistant, moisture-resistant, flame-retardant, waterproof and mildew-proof
Low price	Easy processing, convenient material taking and good cohesiveness

From the above table, it can be seen that, in terms of diaphragm material and process, each individual term is reasonable for some technical requirements, but the implementation is rather contradictory. For example: the rigidity is difficult to be high when the mass is small; it is difficult to have a high modulus of elasticity while at the same time having a high internal damping.

SUMMERY OF THE UTILITY MODEL

For solving exist among the prior art not enough, really restore the sound of nature, the utility model provides an earphone micro-speaker adopts hard rare padauk fibrous compound vibrating diaphragm to have that the rigidity is good, and density is little, and suitable internal damping, distortion are little, analytic dynamic height, high elastic modulus, the fine and soft characteristics of sound.

In order to realize the technical scheme, the utility model provides a miniature loudspeaker of earphone, include: visor, padauk composite diaphragm, voice coil loudspeaker voice coil, magnetic conductive plate, magnet, basin frame, tuning net and terminal block, the basin frame is two hollow cylinder shell integrated into one piece machine-shaping, and magnet is installed in the basin frame, and the voice coil loudspeaker voice coil laminating is in the front side of magnet, and the magnetic conductive plate laminating is between voice coil loudspeaker voice coil and magnet, and the front side at the voice coil loudspeaker voice coil is installed to padauk composite diaphragm, voice coil loudspeaker voice coil, magnetic conductive plate and magnet all wrap up in the basin frame, and the visor is installed at the foremost of basin frame to with padauk composite diaphragm, voice coil loudspeaker voice coil, magnetic conductive plate and magnet involution in the basin frame, be provided with the tuning hole on the rear end lateral wall of basin frame, the tuning net laminating is in on the tuning hole, the terminal.

In the technical scheme, the earphone micro-speaker adopts the hard and rare rosewood fiber as a main material, and replaces the traditional plastic vibration film with the rosewood composite vibration film properly added with other high-performance materials, so that the micro-speaker has the advantages of good rigidity, low density, proper internal damping, small distortion, high analytic power, high elastic modulus, fine and soft sound and other performances, and the micro-speaker has good high-frequency extension but no ear irritation due to the adoption of a high-performance Nd-Fe-B magnet, a 2-LOCK CCAWOFC fine copper wire voice coil and an imported PAPYLON (music center) tuning net, so that the micro-speaker has a very wide listening feeling due to the wide frequency response level, and is not disordered and clear in level for the performance of large dynamic and large field; the resolution of the detail is very high; the fine and soft human voice of the middle frequency part is clear, and particularly, the low frequency performance of the rosewood composite diaphragm is rigid, powerful, thick and not muddy, so that the tiredness caused by long-time listening can be avoided.

Preferably, the rosewood composite vibrating diaphragm consists of a folding ring, a rosewood composite ball top and a copper ring, a round hole is formed in the middle of the folding ring, the rosewood composite vibrating diaphragm is fixed in the round hole, a round ring part is arranged on the outer diameter end edge of the folding ring, the copper ring is bonded in the round ring part, the rosewood composite ball top is clamped in the folding ring and fixed through the copper ring, and the rosewood composite ball top can have a good elastic modulus in the vibrating process.

Preferably, the centre bore has been seted up at the middle part of visor, and a plurality of supplementary round holes use the centre bore to become the circumference array and distribute in the periphery of centre bore as the center, and the even diffusion of loudspeaker sound is convenient for to this kind of design, strengthens the output tone quality of loudspeaker.

Preferably, the terminal plate is attached to the rear end of the frame housing by glue.

Preferably, the distance from the front end of the protective cover to the rear end of the end daughter board is 3-5 mm, and the small-size design is beneficial to installation and miniaturization of products.

The utility model provides a beneficial effect lies in: the earphone micro-speaker changes a common plastic vibrating diaphragm into a rosewood composite vibrating diaphragm, adopts a high-performance Nd-Fe-B magnet and a 2-LOCK CCAWOFC fine copper wire voice coil, and enables the micro-speaker to have good high-frequency extension without being harsh through an imported PAPYLON tuning net, the wide frequency response level of the micro-speaker enables the hearing to be very wide, and the micro-speaker is not disordered and has clear levels for the performance of large dynamics and large scenes; the resolution of the detail is very high; the fine and soft human voice of the middle frequency part is clear, particularly the low frequency performance of the composite rosewood diaphragm is rigid, powerful, thick and not muddy, the tired feeling caused by long-time listening can not be generated, and the distortion degree of the micro-speaker of the earphone is very low.

Drawings

Fig. 1 is a schematic exploded view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic exploded view ii of the three-dimensional structure of the present invention.

Fig. 3 is a schematic structural view of the rosewood composite diaphragm ring of the present invention.

Fig. 4 is a schematic diagram comparing the present invention with other product tests.

In the figure: 1. a protective cover; 11. a central bore; 12. auxiliary round holes; 2. a rosewood composite vibrating diaphragm; 21. folding the ring; 22. a rosewood composite ball top; 23. a copper ring; 3. a voice coil; 4. a magnetic conductive sheet; 5. a magnet; 6. a basin stand; 7. a tuning net; 71. a tone tuning hole; 8. a terminal plate; 81. and a terminal contact.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.

Example (b): an earphone micro-speaker.

Referring to fig. 1 to 3, an earphone micro-speaker includes: a protective cover 1, a rosewood composite vibrating diaphragm 2, a voice coil 3, a magnetic conductive sheet 4, a magnet 5, a basin stand 6, a tuning net 7 and a terminal board 8, the basin frame 6 is integrally formed by two hollow cylindrical shells, the magnet 5 is arranged in the basin frame 6, the voice coil 3 is attached to the front side of the magnet 5, the magnetic conductive sheet 4 is attached between the voice coil 3 and the magnet 5, the rosewood composite vibrating diaphragm 2 is arranged on the front side of the voice coil 3, the rosewood composite vibrating diaphragm 2, the voice coil 3, the magnetic conductive sheet 4 and the magnet 5 are all wrapped in the basin frame 6, the protective cover 1 is arranged at the foremost end of the basin frame 6, and seal padauk composite diaphragm 2, voice coil 3, magnetic conductive plate 4 and magnet 5 in basin frame 6, be provided with sound control hole 71 on the rear end lateral wall of basin frame 6, sound control net 7 laminating is in on sound control hole 71, and the lateral surface at the afterbody of basin frame 6 is fixed to terminal block 8, and terminal contact 81 sets up on the rear wall of terminal block 8.

In the embodiment, the earphone micro-speaker adopts rosewood as a main material, and a rosewood composite vibrating diaphragm 2 properly added with other high-performance materials replaces a traditional plastic vibrating diaphragm, so that the performances of low density, good rigidity, proper internal damping, small distortion, high analytic power, high elastic modulus, fine and soft sound and the like can be realized, and the micro-speaker is provided with good high-frequency extension but no ear pricking by adopting high-performance Nd-Fe-B magnets 5 and 2-LOCK CCAWOFC fine copper wire voice coils 3 and adopting an imported PAPYLON tuning net 7, so that the micro-speaker has very wide auditory sensation due to the wide frequency response level, and is not disordered and clear in level for the performance of large dynamic and large field; the resolution of the detail is very high; the fine and soft human voice of the middle frequency part is clear, and particularly the low frequency performance of the rosewood composite diaphragm is rigid, powerful, thick and not muddy, so that the tiredness caused by long-time listening can be avoided.

Referring to fig. 3, the rosewood composite vibrating diaphragm 2 is composed of a folded ring 21, a rosewood composite ball top 22 and a copper ring 23, a circular hole is formed in the middle of the folded ring 21, the rosewood composite ball top 22 is fixed in the circular hole, a circular ring part is arranged on the outer diameter end edge of the folded ring 21, the copper ring 23 is bonded in the circular ring part, and the rosewood composite ball top 22 is clamped in the folded ring 21 and fixed through the copper ring 23. The rosewood composite ball top 22 is formed by adding a rosewood fiber layer to the composite vibrating diaphragm, so that the rosewood composite ball top 22 has good rigidity (higher than bending rate), small density, high elasticity Young modulus, low frequency, high sound speed and unique natural sound in the vibrating process, and the defects of the plastic vibrating diaphragm are overcome.

Referring to fig. 1, a central hole 11 is formed in the middle of the protective cover 1, and a plurality of auxiliary circular holes 12 are distributed around the central hole 11 in a circumferential array with the central hole 11 as the center, so that the sound of the horn can be uniformly diffused, and the output tone quality of the horn can be enhanced.

In this embodiment, the distance from the front end of the protective cover to the rear end of the terminal board is 4mm, and the small-sized design is beneficial to the installation and miniaturization of products

Referring to fig. 2, the terminal plate 8 is adhered to the rear end of the tub frame 6 by glue.

Referring to fig. 4, fig. 4 shows the following test conditions: the input power is 1 mW; test system SoundCheck, test fixture: under the condition of 2CC tool + B & K4191, the utility model discloses with the test curve contrast sketch map of the loudspeaker of Senhai saier IE8 and ordinary 9MM loudspeaker, wherein reference numeral 13 does the utility model discloses a test curve, reference numeral 14 are Senhai saier IE 8's loudspeaker test curve, and reference numeral 15 is the test curve of ordinary 9MM loudspeaker. As can be seen by comparing the test curves in fig. 4, in the low frequency region, the bass tone quality is very prominent and the distortion degree is very low.

The above description is a preferred embodiment of the present invention, but the present invention should not be limited to the disclosure of the embodiment and the accompanying drawings, and therefore, all equivalents and modifications that can be accomplished without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An earphone micro-speaker, characterized by comprising: the loudspeaker comprises a protective cover, a rosewood composite vibrating diaphragm, a voice coil, a magnetic conductive sheet, a magnet, a basin frame, a tuning net and a terminal board, wherein the basin frame is formed by integrally processing two hollow cylindrical shells, the magnet is installed in the basin frame, the voice coil is attached to the front side of the magnet, the magnetic conductive sheet is attached between the voice coil and the magnet, the rosewood composite vibrating diaphragm is installed on the front side of the voice coil, the rosewood composite vibrating diaphragm, the voice coil, the magnetic conductive sheet and the magnet are all wrapped in the basin frame, the protective cover is installed at the foremost end of the basin frame and seals the rosewood composite vibrating diaphragm, the voice coil, the magnetic conductive sheet and the magnet in the basin frame, a tuning hole is formed in the side wall of the rear end of the basin frame, the tuning net is attached to the tuning hole; the rosewood composite vibrating diaphragm is composed of a folded ring, a rosewood composite material ball top and a copper ring, wherein a round hole is formed in the middle of the folded ring, the rosewood composite material ball top is fixed in the round hole, a round ring part is arranged on the outer diameter end edge of the folded ring, and the copper ring is bonded in the round ring part.

2. The earphone micro-speaker of claim 1, wherein: the middle part of the protective cover is provided with a central hole, and a plurality of auxiliary round holes are distributed on the periphery of the central hole in a circumferential array by taking the central hole as the center.

3. The earphone micro-speaker of claim 1, wherein: the terminal board is attached to the rear end of the basin stand shell through glue.

4. The earphone micro-speaker of claim 1, wherein: the distance from the front end of the protective cover to the rear end of the terminal board is 3-5 mm.