CN212850988U

CN212850988U - Sound production monomer and sound production device

Info

Publication number: CN212850988U
Application number: CN202021911261.6U
Authority: CN
Inventors: 葛连山; 王继宗
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-03-30
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a sounding monomer and a sounding device, wherein the sounding monomer is arranged in a shell with a cavity and is used for dividing the cavity into a front cavity and a rear cavity; the sound production monomer is including the basin frame that has accommodating space and locate vibration system and magnetic circuit in the accommodating space, vibration system's vibrating diaphragm includes ball top, book ring portion and the fixed part that from interior to exterior connected gradually, offer on the ball top and be used for the intercommunication the ante-chamber with accommodating space's air vent, the fixed part with the basin frame is connected, offer on the basin frame and be used for the intercommunication accommodating space with the hole of revealing in back chamber. The utility model discloses a sound production monomer and sound production device atmospheric pressure of balanced front chamber and back chamber reduces or eliminates the uncomfortable sense of user, promotes sound production monomer tone quality.

Description

Sound production monomer and sound production device

Technical Field

The utility model relates to an electroacoustic conversion technical field, in particular to sound production monomer and sound production device.

Background

Earphones are widely used in modern consumer electronics. In order to improve the tone quality effect felt by a user and reduce the influence of external environment sound, the tightness between the existing earphone and the ear of the user is increased by increasing a sealing structure. When a user wears the earphone, air compression in the auditory canal of the user can be caused, so that the air pressure in the auditory canal is increased, the user feels uncomfortable, and particularly the discomfort of the in-ear earphone is obvious.

Therefore, it is desirable to provide a new sound generation device to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sound production monomer and sound production device aims at solving the technical problem that the uncomfortable that the user's ear canal atmospheric pressure improves and arouses when wearing the earphone feels.

In order to achieve the purpose, the utility model provides a sounding monomer, which is used for being arranged in a shell with a cavity and dividing the cavity into a front cavity and a rear cavity; the sound production monomer is including the basin frame that has accommodating space and locate vibration system and magnetic circuit in the accommodating space, vibration system's vibrating diaphragm includes ball top, book ring portion and the fixed part that from interior to exterior connected gradually, offer on the ball top and be used for the intercommunication the ante-chamber with accommodating space's air vent, the fixed part with the basin frame is connected, offer on the basin frame and be used for the intercommunication accommodating space with the hole of revealing in back chamber.

Preferably, the vibration system further comprises a waterproof breathable film, and the waterproof breathable film covers the vent hole.

Preferably, the ball top is circular and the vent hole is located in a central region of the ball top.

Preferably, the number of the vent holes is multiple, and the vent holes are uniformly distributed on the top of the ball.

Preferably, magnetic circuit includes the yoke, the basin frame is including the lateral wall, connecting portion and the installation department that connect gradually, the lateral wall with the outer wall butt of yoke, the top of installation department is used for connecting the fixed part.

Preferably, the leakage hole is provided on the connection part.

Preferably, the sound generating unit further comprises a damping sheet arranged at the bottom of the connecting portion, and the damping sheet at least covers a partial area of one of the leakage holes.

Preferably, the basin frame is still including setting up the collar on installation department top, the fixed part is fixed in on the collar.

Preferably, the basin stand further comprises a protruding block connected with the side wall, and a clamping groove clamped with the protruding block is formed in the magnetic yoke.

Furthermore, the utility model also provides a sounding device, sounding device including the casing that has the cavity and as aforesaid the sound production monomer, the sound production monomer will the cavity is separated for antechamber and back chamber.

In the present invention, the sounding unit of the present invention comprises a basin frame having an accommodating space, and a vibration system and a magnetic circuit system disposed in the accommodating space, wherein a vibration diaphragm of the vibration system comprises a ball top portion, a bending portion and a fixing portion which are sequentially connected from inside to outside, the ball top portion is provided with an air vent for communicating the front cavity with the accommodating space, the fixing portion is connected with the basin frame, the basin frame is provided with a leakage hole for communicating the accommodating space with the rear cavity, so that the air pressure between the front cavity and the rear cavity can be balanced to generate an acoustic short circuit effect; because the air in the ear canal is compressed when the earphone is worn, the user is uncomfortable, and the air pressure between the earphone and the eardrum can be reduced or removed by communicating the front cavity and the rear cavity through the vent hole and the air leakage hole, so that the user discomfort is relieved or removed; the front cavity and the rear cavity are communicated through the vent hole and the air release hole, so that external sound can pass through the rear cavity and the front cavity to reach the eardrum, and the transparent mode operation of the earphone is realized; in addition, the front cavity is communicated with the rear cavity through the vent hole, so that active noise reduction debugging 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 needed to be 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 view of a disassembled structure of an embodiment of the sound-generating unit of the present invention;

fig. 2 is a schematic cross-sectional view of an embodiment of the sound generating unit of the present invention.

Examples reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Sound monomer	1	Basin rack
11	Side wall	13	Connecting part
				14	Leakage hole	15	Mounting part
16	Mounting ring	17	Bump
				3	Vibration system	31	Vibrating diaphragm
311	Ball top	313	Folded ring part
				315	Fixing part	33	Voice coil
4	Vent hole	5	Magnetic circuit system
				51	Magnetic yoke	511	Base plate
512	Clamping groove	513	Side plate
				52	Magnetic gap	53	Main magnetic steel
55	Magnetic conductive plate	7	Damping fin
				2	Accommodating space	8	Waterproof breathable film

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

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, 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 motion situation, etc. in a specific posture (as shown in the drawings), 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 implicit ly 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, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a sound production monomer 10.

Referring to fig. 1 and 2, in the sound generating unit 10 according to the technical solution of the present invention, the sound generating unit 10 is disposed in a housing having a cavity, and is used for dividing the cavity into a front cavity and a rear cavity; the sound production monomer 10 is including the basin frame 1 that has accommodating space 2 and locate vibration system 3 and magnetic circuit 5 in the accommodating space 2, vibration system 3 includes ball top 311, the book ring portion 313 and the fixed part 315 that from interior to exterior connected gradually, seted up on the ball top 313 and be used for the intercommunication the ante-chamber with accommodating space 2's air vent 4, the fixed part 315 with basin frame 1 is connected, seted up on the basin frame 1 and be used for the intercommunication accommodating space 2 with the hole 14 that reveals in back chamber.

In this embodiment, the magnetic circuit system 5 includes a magnetic yoke 51 matching with the basin frame 1, a main magnetic steel 53 spaced from the magnetic yoke 51 to form a magnetic gap 52, and a magnetic conductive plate 55 disposed on the main magnetic steel 53, the vibration system 3 includes a diaphragm 31 fixed to the basin frame 1 and a voice coil 33 driving the diaphragm 31 to vibrate, and the voice coil 33 is inserted into the magnetic gap 52. Under the action of the magnetic field generated by the magnetic circuit system 5, the voice coil 33 vibrates after being energized, thereby driving the diaphragm 31 to vibrate and sound. Of course, in other embodiments, the magnetic circuit system 5 and the vibration system 3 may have other structures to realize vibration sound production.

Through setting up air vent 4 and leakage hole 14 intercommunication the front chamber with the back chamber to make the sound wave that vibrating diaphragm 31 vibration produced can get into the back chamber from the front chamber through air vent 4, the sound wave that vibrating diaphragm 31 vibration produced can get into the front chamber from the back chamber through air vent 4 simultaneously, and two sound wave opposite directions promptly make partial sound wave offset, produce the sound short circuit effect, reach the purpose of adjusting the frequency response.

The utility model adopts the vent hole 4 and the leakage hole 14 to communicate the front cavity and the rear cavity, so that the air pressure between the front cavity and the rear cavity can be balanced, and the sound short circuit effect is generated; due to the fact that air in the ear canal is compressed when the earphone is worn, discomfort of a user is caused, the air vent 4 is communicated with the front cavity and the rear cavity, so that air pressure between the earphone and the eardrum can be reduced or removed, and discomfort of the user is relieved or removed; the vent hole 4 is communicated with the front cavity and the rear cavity, so that external environment sound can pass through the rear cavity and the front cavity to reach the eardrum, and the transparent mode operation of the earphone is realized. Furthermore, the utility model discloses a cavity and back chamber before air vent 4 intercommunication are convenient for carry out the debugging that sound production monomer 10 initiative was fallen and is made an uproar.

Further, the vibration system 3 further comprises a waterproof breathable film 8, and the waterproof breathable film 8 covers the vent hole 4. The waterproof breathable film 8 can enable air flow to pass through, but can protect the internal structure of the generating monomer, and the reliability of the generating monomer is improved.

In an embodiment, the top 311 of the ball is circular, the vent holes 4 are located in the central area of the top 311 of the ball, the vent holes 4 are circular holes and located at the center of the top 311 of the ball, so that the air pressure on the two sides of the diaphragm 31 is balanced, the air pressure in the accommodating space 2 is prevented from being too large, the air pressure in the accommodating space is more balanced, the internal airflow flows smoothly, and the performance of the sounding unit is improved.

In another embodiment, the number of the vent holes 4 is a plurality of, and a plurality of the vent holes 4 are evenly distributed on the ball top 311, and the number of each vent hole 4 can be a small round hole, and the plurality of small round holes can be linearly arranged, and can also be circularly and evenly distributed on the ball top 311, so that the airflow on the two opposite sides of the sounding monomer is balanced in flowing.

Basin frame 1 is including the lateral wall 11, connecting portion 13 and the installation department 15 that connect gradually, lateral wall 11 with the outer wall butt of yoke main part, the bottom of installation department 15 with assembly ear 56 butt, the top of installation department 15 is used for fixing vibrating diaphragm 31 of vibration system 3. The side wall 11, the connecting portion 13 and the mounting portion 15 may form a step structure, so that along the vibration direction of the voice coil 33, the projection of the yoke 51 adapted to the side wall 11 falls on the diaphragm 31, and the diaphragm 31 may vibrate between the front cavity and the connecting portion 13, which is beneficial for the vibration and sound production of the diaphragm 31. The basin stand 1 is firmly connected with the magnetic yoke 51, and the reliability of the generating single body is improved.

The connection portion 13 is provided with a leakage hole 14, the connection portion 13 extends from one end of the sidewall 11 close to the diaphragm 31 to a direction away from the magnetic circuit system 5, the mounting portion 15 extends from the connection portion 13 to a direction close to the diaphragm 31, and the leakage hole 14 is opened on the connection portion 13. In the embodiment, the frame 1 is circular, the side wall 11, the connecting part 13 and the mounting part 15 are coaxially arranged, and the diameter of the side wall 11 is smaller than that of the mounting part 15. The air in the rear chamber may directly pass through the leakage hole 14 on the connection portion 13 in the vibration direction of the voice coil 33.

When vibrating diaphragm 31 sound production vibration, the air in basin frame 1 is compressed by vibrating diaphragm 31 vibration, and accessible leakage hole 14 balances vibrating diaphragm 31 rear side space atmospheric pressure, realizes the atmospheric pressure balance between back chamber and the accommodating space 2 to make things convenient for vibrating diaphragm 31 vibration, improve tone quality.

Further, the sound production device 100 further comprises a damping sheet 7 disposed at the bottom of the connecting portion 13, and the damping sheet 7 covers at least a partial area of one of the leakage holes 14. It can be understood by those skilled in the art that the number of the leakage holes 14 may be plural, when the number of the damping fin 7 is one, one damping fin 7 may only shield a partial region of one leakage hole 14, or may shield partial regions of a plurality of leakage holes 14 respectively by one damping fin 7, one damping fin 7 may completely shield one leakage hole 14, or one damping fin 7 may completely cover a plurality of leakage holes 14; when the number of the damper pieces 7 is plural, the damper pieces 7 may be provided for each of the leak holes 14, each of the damper pieces 7 may shield a partial region of one of the leak holes 14, and each of the damper pieces 7 may completely shield each of the leak holes 14. The damper 7 may be attached to the connection portion 13, or may be provided on the connection portion 13 by welding or the like. The person skilled in the art can use damping fins 7 of different materials according to different user demands, or adjust the area that damping fin 7 shields leakage hole 14 to adjust the size of rear chamber and accommodating space 2 communicating area, realize tone quality regulation.

In another embodiment, the frame 1 further comprises a mounting ring 16 disposed at the top end of the mounting portion 15, and the fixing portion 315 is fixed on the mounting ring 16. The mounting ring 16 may be a copper ring. In other embodiments, a through hole communicating the receiving space 2 and the front cavity may be formed by changing the shape, thickness, and the like of the copper ring.

In another embodiment, the magnetic circuit system 5 includes a magnetic yoke 51, a main magnetic steel 53 spaced from the magnetic yoke 51 to form a magnetic gap 52, and a magnetic conductive plate 55 disposed on the main magnetic steel 53. The magnetic yoke 51 comprises a bottom plate 511 and a side plate 513 bent and extended from the bottom plate 511, the main magnetic steel 53 is attached to the bottom plate 511, the side wall 11 is sleeved on the outer side of the side plate 513, and the assembling lug 56 extends from the upper end of the side plate 513 to the direction far away from the accommodating space 2. In the embodiment shown in fig. 1, the frame 1 further includes a protrusion 17 connected to the side wall 11, the yoke 51 is provided with a slot 512 adapted to the protrusion 17, and the yoke 51 is connected to the frame 1 by engaging the protrusion 17 with the slot 512.

The utility model also provides a sounding device, sounding device including the casing that has the cavity and as above sounding monomer 10, sounding monomer 10 will the cavity is separated for antechamber and back chamber. The specific embodiment of the sound generating device of the present invention is substantially the same as the above-mentioned embodiments of the sound generating unit 10, and is not repeated herein. The sound generating device may be a headphone, an in-ear headphone or the like.

The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.

Claims

1. The sounding unit is characterized in that the sounding unit is arranged in a shell with a cavity and is used for dividing the cavity into a front cavity and a rear cavity; the sound production monomer is including the basin frame that has accommodating space and locate vibration system and magnetic circuit in the accommodating space, vibration system's vibrating diaphragm includes ball top, book ring portion and the fixed part that from interior to exterior connected gradually, offer on the ball top and be used for the intercommunication the ante-chamber with accommodating space's air vent, the fixed part with the basin frame is connected, offer on the basin frame and be used for the intercommunication accommodating space with the hole of revealing in back chamber.

2. The sound generating unit as claimed in claim 1, wherein the vibration system further comprises a waterproof and breathable membrane covering the vent hole.

3. The sound generating unit of claim 1, wherein the top of the ball is rounded and the vent is located in a central region of the top of the ball.

4. The sounding monomer according to claim 1, wherein the number of the vent holes is plural, and the plurality of vent holes are uniformly distributed on the top of the ball.

5. The sounding unit according to any one of claims 1 to 4, wherein the magnetic circuit system includes a magnetic yoke, the frame includes a side wall, a connecting portion and a mounting portion, the side wall abuts against an outer wall of the magnetic yoke, and a top end of the mounting portion is used for connecting the fixing portion.

6. The sound generating unit as claimed in claim 5, wherein the leakage hole is provided on the connecting portion.

7. The sound generating unit as claimed in claim 6, further comprising a damper disposed at the bottom of the connecting portion, wherein the damper covers at least a partial area of one of the leakage holes.

8. The sounding unit according to claim 5, wherein the frame further comprises a mounting ring disposed at a top end of the mounting portion, and the fixing portion is fixed to the mounting ring.

9. The sounding unit as claimed in claim 5, wherein the frame further comprises a protrusion connected to the sidewall, and the yoke is formed with a slot engaged with the protrusion.

10. A sound-producing device comprising a housing having a cavity and a sound-producing monomer according to any one of claims 1 to 9, the sound-producing monomer dividing the cavity into a front chamber and a rear chamber.