CN112333611A

CN112333611A - Sound monomer

Info

Publication number: CN112333611A
Application number: CN202011377501.3A
Authority: CN
Inventors: 于龙欣
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-02-05
Anticipated expiration: 2040-11-30
Also published as: CN112333611B

Abstract

The invention discloses a sounding single body, which comprises a magnetic yoke and a shell which are matched to form an accommodating space, and a magnetic circuit system and a vibration system which are arranged in the accommodating space; the vibration system comprises a vibrating diaphragm fixedly arranged on the shell, a voice coil for driving the vibrating diaphragm to vibrate and a ball top arranged on the vibrating diaphragm, the magnetic circuit system is provided with a magnetic gap, and the voice coil is inserted into the magnetic gap; the dome is divided into a small amplitude deviation area and at least one large amplitude deviation area, and one or more leakage holes are formed in the large amplitude deviation area. The technical scheme of the invention can reduce polarization and improve the tone quality of the sounding monomer.

Description

Sound monomer

Technical Field

The invention relates to the technical field of electroacoustic conversion, in particular to a sounding monomer.

Background

The related art sounding unit comprises a magnetic circuit system, a vibration system and a shell for accommodating the magnetic circuit system and the vibration system. The voice coil moves after being electrified, and drives the vibrating diaphragm to vibrate, and the air in the rear cavity can be compressed or expanded to make a sound. In the voice coil loudspeaker voice coil motion process, vibration system probably receives the structure influence of sound production monomer itself and produces the polarization for each partial vibration amplitude of vibrating diaphragm is inconsistent, influences product tone quality.

Therefore, there is a need to provide a new sounding unit to solve the above problems.

Disclosure of Invention

The invention mainly aims to provide a sounding monomer, and aims to solve the technical problem that the existing sounding monomer is influenced by the structural design of the sounding monomer, so that the polarization of the area of the top of a ball is large, and the sound quality of a product is influenced.

In order to achieve the purpose, the sound generating unit provided by the invention comprises a magnetic yoke and a shell which are matched to form an accommodating space, and a magnetic circuit system and a vibration system which are arranged in the accommodating space;

the vibration system comprises a vibrating diaphragm fixedly arranged on the shell, a voice coil for driving the vibrating diaphragm to vibrate and a ball top arranged on the vibrating diaphragm, the magnetic circuit system is provided with a magnetic gap, and the voice coil is inserted into the magnetic gap;

the dome is divided into a small amplitude deviation area and at least one large amplitude deviation area, and one or more leakage holes are formed in the large amplitude deviation area.

Preferably, the sounding unit further comprises a leakage amount adjusting piece attached to the large-amplitude deviation area, and the leakage amount adjusting piece covers at least one of the leakage holes.

Preferably, the sounding unit further comprises an air-permeable member attached to the large amplitude deviation area, and the air-permeable member covers at least one of the leakage holes.

Preferably, the sound production monomer still includes leakage quantity regulating part and ventilative piece, leak the quantity regulating part with ventilative piece is folded and is established, leak the quantity regulating part or ventilative piece pastes and establishes big amplitude deviation region covers at least one leak the hole.

Preferably, the air permeable member and the dome are of an integrally formed structure.

Preferably, the vibrating diaphragm includes outer fixed part, the ring folding portion and the installation department that sets gradually to interior, the fixed part with the shell is connected, the border of ball top with the fixed part is connected.

Preferably, the magnetic circuit system includes a main magnetic steel disposed on the magnetic yoke, an auxiliary magnetic steel disposed opposite to the main magnetic steel, a main magnetic plate disposed on the main magnetic steel, and an auxiliary magnetic plate disposed on the auxiliary magnetic steel.

Preferably, the housing includes a mounting frame disposed opposite to the magnetic yoke, and a plurality of support seats supported between the magnetic yoke and the mounting frame, and the fixing portion is connected to the mounting frame.

Preferably, a gap is formed between the mounting frame, the magnetic guide yoke and two adjacent supporting seats, the auxiliary magnetic steel is inserted into the gap, and the auxiliary magnetic steel is arranged between the magnetic guide yoke and the mounting frame.

Preferably, the magnetic yoke is provided with a mounting hole, the sound generating unit further comprises a conductive terminal clamped with the mounting hole, and the conductive terminal is connected with the voice coil.

In the invention, one or more leakage holes are formed in the large-amplitude deviation area, so that air on two sides of the vibrating diaphragm can flow at the leakage holes in the vibrating process of the vibrating diaphragm, the internal and external air pressures of the sounding monomer are balanced, the air pressure at the leakage holes is reduced, the amplitude of the large-amplitude deviation area is reduced, the polarization of the vibrating system is further improved, the vibrating system vibrates stably, the listening margin of the sounding monomer is improved, and the low-frequency performance is particularly improved; the amplitude symmetry of all positions of the ball top is adjusted by reducing the amplitude of the large-amplitude deviation area; the leakage holes are arranged, so that auxiliary heat dissipation is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a sound generating unit according to an embodiment of the present invention

FIG. 2 is a schematic view of a disassembled structure of a sounding unit according to an embodiment of the present invention;

3 fig. 33 3 is 3 a 3 schematic 3 sectional 3 view 3 of 3 the 3 sounding 3 unit 3 shown 3 in 3 fig. 31 3 along 3 the 3 line 3 a 3- 3 a 3. 3

Examples reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Sound monomer	1	Magnetic conductive yoke
12	Mounting hole	3	Outer casing
				31	Mounting frame	32	Gap
33	Supporting seat	5	Magnetic circuit system
				51	Main magnetic steel	53	Auxiliary magnetic steel
55	Leading magnetic plate	57	Auxiliary magnetic conductive plate
				7	Vibration system	71	Vibrating diaphragm
711	Fixing part	713	Folded ring part
				715	Mounting part	72	Leakage hole
73	Voice coil	75	Ball top
				751	Small amplitude deviation region	753	Large amplitude deviation region
77	Leakage quantity regulating member	9	Conductive terminal

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a sounding monomer 100.

Referring to fig. 1, 2 and 3, the sound generating unit 100 according to the present invention includes a magnetic yoke 1 and a housing 3 cooperating to form an accommodating space, and a magnetic circuit system 5 and a vibration system 7 disposed in the accommodating space; the vibration system 7 comprises a diaphragm 71 fixedly arranged on the shell 3, a voice coil 73 for driving the diaphragm 71 to vibrate and a ball top 75 arranged on the diaphragm 71, the magnetic circuit system 5 is provided with a magnetic gap, and the voice coil 73 is inserted into the magnetic gap; the dome 75 is divided into a small amplitude deviation region 751 and at least one large amplitude deviation region 753, with one or more bleed holes 72 being provided within the large amplitude deviation region 753.

Specifically, the voice coil 73 is connected to an external circuit, and after the voice coil 73 is energized, it vibrates under the action of the magnetic field of the magnetic circuit system 5, so as to drive the diaphragm 71 to vibrate and sound. Due to different structures of the sounding unit 100, different materials, structures and fixing manners of the diaphragm 71, polarization of the vibration system 7 may occur. The large amplitude deviation region 753 is a region where the amplitude is large at the dome 75 at a certain vibration frequency. The amplitude of each position on the dome 75 at a plurality of frequencies can be detected in advance, and the small amplitude deviation region 751 and the large amplitude deviation region 753 can be identified. One skilled in the art can set certain preset thresholds to identify the small amplitude deviation region 751 and the large amplitude deviation region 753. For example: if the preset threshold value is 3mm at a vibration frequency of 100hz, the region having an amplitude greater than 3mm is a large amplitude deviation region 753, and the region having an amplitude less than 3mm is a small amplitude deviation region 751. Of course, a comparison value may be calculated by using a preset formula and parameters such as vibration frequency, and the actually detected amplitude may be compared with the comparison value to distinguish the small amplitude deviation region 751 from the large amplitude deviation region 753. When there are a plurality of large amplitude deviation regions 753, at least one leakage hole 72 is opened in each large amplitude deviation region 753.

In the invention, one or more leakage holes 72 are formed in the large-amplitude deviation area 753, so that air on two sides of the vibrating diaphragm 71 can flow at the leakage holes 72 in the vibrating process of the vibrating diaphragm 71, the air pressure inside and outside the sounding monomer 100 is balanced, the air pressure at the leakage holes 72 is reduced, the amplitude of the large-amplitude deviation area 753 is reduced, the polarization of the vibrating system 7 is further improved, the vibrating system 7 is enabled to vibrate stably, the listening margin of the sounding monomer 100 is improved, and particularly the low-frequency performance is improved; by reducing the amplitude of the large amplitude deviation region 753, the amplitude symmetry is adjusted throughout the dome 75; the provision of the leakage holes 72 facilitates auxiliary heat dissipation.

One amplitude deviation region may be provided with one or more leakage holes 72, and the size, shape and number of the leakage holes 72 are not limited in the present invention. The size, shape and number of the leakage holes 72 may be determined by the art according to the amplitude reduction requirements. In the embodiment shown in fig. 1, two square leakage holes 72 are provided in the dome 75. In another embodiment, the ball top 75 is provided with a plurality of tiny leakage holes 72, and the tiny leakage holes 72 form a microporous structure.

Further, the sound generating unit 100 further includes a leakage amount adjuster 77 attached to the large amplitude deviation region 753, and the leakage amount adjuster 77 covers at least one of the leakage holes 72. The leakage amount adjusting member 77 may be a mesh cloth made of a material with high damping and low leakage amount, and certainly, the mesh cloth with additional functions of heat dissipation, oil resistance and the like can be obtained as the leakage amount adjusting member 77 by improving the material and structure of the mesh cloth. The leakage amount adjuster 77 may cover all the leakage holes 72 at the same time, may cover only a part of the leakage holes 72, and may be provided one for each leakage hole 72. The amount of air flow of each leakage hole 72 can be adjusted by providing the leakage amount adjuster 77.

In another embodiment, the sound generating unit 100 further comprises a ventilation member attached to the large amplitude deviation region 753, the ventilation member covering the at least one leakage hole 72. The air permeable member may be a breathable film or other breathable materials with air permeable function, and certainly, the air permeable member with additional functions of heat dissipation, oil resistance and the like can be obtained by improving the material and structure of the air permeable member. As with the leakage amount adjusting member, the ventilation member may cover all of the leakage holes 72 at the same time, may cover only a portion of the leakage holes 72, and may further have one leakage amount adjusting member provided for each of the leakage holes 72 to correspond thereto.

In another embodiment, the sound generating unit 100 further includes a leakage amount adjuster 77 and a ventilation member, the leakage amount adjuster 77 and the ventilation member are stacked, and the leakage amount adjuster 77 or the ventilation member is attached to the large amplitude deviation region 753 and covers at least one leakage hole 72. The air permeable member and/or the leakage amount adjuster may be fixed to the dome 75 by a back adhesive or by heat fusion. In yet another embodiment, the breather and dome 75 are of unitary construction.

Referring to fig. 2 and 3, the diaphragm 71 includes a fixing portion 711, a corrugated portion 713, and an installation portion 715, the fixing portion 711 is connected to the housing 3, and the edge of the dome 75 is connected to the fixing portion 711.

The magnetic circuit system 5 includes a main magnetic steel 51 disposed on the magnetic yoke 1, an auxiliary magnetic steel 53 disposed opposite to the main magnetic steel 51, a main magnetic plate 55 disposed on the main magnetic steel 51, and an auxiliary magnetic plate 57 disposed on the auxiliary magnetic steel 53. The magnetic field is optimized by providing a primary magnetic plate 55 and a secondary magnetic plate 57. In the present embodiment, the magnetic yoke 1 has a plate-shaped structure, the plurality of secondary magnetic steels 53 are arranged, and are arranged two by two symmetrically around the primary magnetic steel 51, and the secondary magnetic conductive plate 57 has an annular structure arranged on each secondary magnetic steel 53.

The housing 3 includes a mounting frame 31 provided to face the yoke 1, a plurality of support bases 33 connected to the mounting frame 31, the support bases 33 connected to the yoke 1, and a fixing portion 711 connected to the mounting frame 31. The plurality of support bases 33 may be supported between the yoke 1 and the mounting frame 31, and the support bases 33 may be engaged with through holes formed in the yoke 1 to connect the support bases 33 to the yoke 1.

A gap 32 is formed between the mounting frame 31, the magnetic yoke 1 and two adjacent supporting seats 33, the auxiliary magnetic steel 53 is inserted into the gap 32, and the auxiliary magnetic steel 53 is arranged between the magnetic yoke 1 and the mounting frame 31. By providing the notch 32, a part of the sub magnetic steel 53 is provided between the magnetic yoke 1 and the mounting frame 31, so that the sound generating unit 100 can be reduced in size. In this embodiment, the number of the secondary magnetic steels 53 and the number of the supporting seats 33 are four, the mounting frame 31 is rectangular, and the four supporting seats 33 are respectively connected with four corners of the mounting frame 31.

Furthermore, the magnetic yoke 1 is provided with a mounting hole 12, and the sound generating unit 100 further includes a conductive terminal 9 engaged with the mounting hole 12, and the conductive terminal is connected to the voice coil 73. And is connected with an external circuit through the conductive terminals 9.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The sounding single body is characterized by comprising a magnetic yoke and a shell which are matched to form an accommodating space, and a magnetic circuit system and a vibration system which are arranged in the accommodating space;

2. The sound generating unit of claim 1, further comprising a leakage adjuster attached to the large amplitude deviation area, the leakage adjuster covering at least one of the leakage holes.

3. The sound generating unit of claim 1, further comprising an air permeable member attached to the large amplitude deviation area, the air permeable member covering at least one of the leakage holes.

4. The sound generating unit according to claim 1, wherein the sound generating unit further comprises a leakage amount adjusting member and a ventilation member, the leakage amount adjusting member and the ventilation member are stacked, and the leakage amount adjusting member or the ventilation member is attached to the large amplitude deviation area and covers at least one of the leakage holes.

5. The sound generating unit of claim 4, wherein the air permeable member and the dome are of one-piece construction.

6. The sounding unit of any one of claims 1 to 5, wherein the diaphragm includes a fixing portion, a bending portion and an installation portion, the fixing portion is connected to the housing, and an edge of the dome is connected to the fixing portion.

7. The sounding unit according to claim 6, wherein the magnetic circuit system comprises a main magnetic steel disposed on the magnetic yoke, a secondary magnetic steel disposed opposite to the main magnetic steel, and a main magnetic plate disposed on the main magnetic steel and a secondary magnetic plate disposed on the secondary magnetic steel.

8. The sound generating unit as claimed in claim 7, wherein the housing includes a mounting frame disposed opposite to the yoke, and a plurality of support seats supported between the yoke and the mounting frame, and the fixing portion is connected to the mounting frame.

9. The sounding unit according to claim 8, wherein a gap is formed between the mounting frame, the magnetic yoke and two adjacent supporting seats, the secondary magnetic steel is inserted into the gap, and the secondary magnetic steel is disposed between the magnetic yoke and the mounting frame.

10. The sounding unit according to claim 6, wherein the magnetic yoke has a mounting hole, and the sounding unit further includes a conductive terminal engaged with the mounting hole, and the conductive terminal is electrically connected to the voice coil.