CN215453215U

CN215453215U - Magnetic-isolation dustproof earphone

Info

Publication number: CN215453215U
Application number: CN202120728835.4U
Authority: CN
Inventors: 卢华庭; 蒲晓勇
Original assignee: Jiangxi Lianchuang Sound Macro Electronic Co ltd
Current assignee: Jiangxi Lianchuang Sound Macro Electronic Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2022-01-07
Anticipated expiration: 2031-04-09

Abstract

The utility model provides a magnetic isolation and dust prevention earphone, belonging to the technical field of Bluetooth earphones; the magnetic shielding sheet comprises a disk-shaped base body and a flange, wherein the flange is formed by extending outwards from the outer edge of the disk-shaped base body; the disc-shaped base body is characterized in that a plurality of arch-shaped bodies are arranged on the arc-shaped part of the disc-shaped base body, lateral thin slits are formed between the arch-shaped bodies and the arc-shaped part of the disc-shaped base body, and the lateral thin slits are arranged on the side of the sound generating unit. The sound adjusting hole is blocked by the magnetism isolating sheet, so that normal magnetic lines of force of the sound generating unit cannot penetrate through the magnetism isolating sheet, and the stability and reliability of the magnetism isolating and dust preventing earphone are improved; through the lateral slits, the normal magnetic force lines of the sound production unit are isolated, meanwhile, sound of the sound production unit is emitted without being blocked, and the sound effect of the magnetic isolation dustproof earphone is not influenced.

Description

Magnetic-isolation dustproof earphone

Technical Field

The utility model belongs to the technical field of Bluetooth earphones, and particularly relates to a magnetic isolation dustproof earphone.

Background

In recent years, with the change of habits of consumer groups and the improvement of user consciousness, the Bluetooth headset is very popular, and the product is selected through the sound generating unit and then is subjected to comprehensive debugging through the acoustic cavity structure, the circuit and software, so that a stable audio frequency response curve is formed, and the stability of tone quality is ensured. As is well known, a small loudspeaker is arranged in the earphone, sound waves are sent into air to make sound through resonance work of an earphone cone and an electromagnet, and the cavity structure of the earphone belongs to a completely closed design except for a sound outlet hole, so that the pressure inside the earphone can be increased due to vibration of the earphone cone, and the vibration of the loudspeaker is blocked in turn. At this moment, the sound adjusting hole is needed to enable air to flow in and flow out of the loudspeaker, pressure accumulation is prevented, the loudspeaker can move freely, and meanwhile, better tone quality and a bass effect can be created.

In general, the front part of the sound generating unit corresponds to the sound adjusting hole; the sounding unit can produce inherent magnetic field and magnetic line of force because of its structure, and in the great environment of dust, the metal dust of suspension can be adsorbed near the tuning hole, and these tuning holes are because of the needs of sounding or frequency modulation, do not carry out completely sealed, therefore these slight metal dust can pass protective layer such as metal steel mesh or damping material that the tuning was used, enter into inside the earphone, arouse that sounding unit or components and parts are invalid or performance reduction, lead to the performance and the reliability reduction of earphone product or whole inefficacy. The traditional solution mainly changes the ventilation density of the damping material, and prevents iron chips and dust from entering a magnetic sound production unit; through experimental verification, the influence of damping encryption on audio is obvious, the SPL curve changes greatly, the low-frequency inductance is obviously insufficient before subjective listening is improved, high-frequency details are lost, and the integral tone quality is hard; and because the particle size of the iron dust is too small, the problem that the iron powder can not enter the sound generating unit can not be prevented.

Therefore, how to effectively solve the problem that metal dust enters the earphone body through the tone adjusting hole to prevent the stability and reliability of the sound generating unit from being affected in the using process of the earphone is a subject worth of research.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a magnetic-isolating dustproof earphone, which can effectively prevent metal dust outside the earphone body from entering the earphone body through a tuning hole by mounting a magnetic-isolating sheet at the tuning hole of the earphone, thereby improving the stability and reliability of the performance of a sound generating unit.

The utility model provides a following technical scheme, a separate magnetism earphone that prevents dust, include the shell and locate the sound producing unit of this shell inner chamber.

Preferably, the magnetic-isolating dustproof earphone further comprises a magnetic-isolating sheet which is arranged in the shell and corresponds to the transmitting unit, wherein the magnetic-isolating sheet comprises a disk-shaped base body and a flange, and the flange extends outwards from the outer edge of the disk-shaped base body; the disc-shaped base body is characterized in that a plurality of arch-shaped bodies are arranged on the arc-shaped part of the disc-shaped base body, lateral thin slits are formed between the arch-shaped bodies and the arc-shaped part of the disc-shaped base body, and the lateral thin slits are arranged on the side of the sound generating unit.

Preferably, a plurality of the arches are formed by the arc-shaped part of the disk-shaped base body bulging towards one side of the disk space.

Preferably, the outer rim of the flange is shaped in a circular, square, racetrack or oval configuration.

Preferably, the magnetic shielding sheet is made of a metal material with magnetic conductivity.

Preferably, the disc-shaped base, the flange and the arcuate body are integrally stamped and formed.

Preferably, the shell comprises an earshell with two open ends, and a face cover and a back cover which are respectively assembled on the two open ends of the earshell.

Preferably, the surface cover is provided with a sound adjusting hole and a sound outlet hole, the sound outlet hole is arranged on the side opposite to the sound generating unit, the sound adjusting hole is arranged opposite to the sound generating unit, and the magnetic shielding sheet is arranged between the sound adjusting hole and the sound generating unit.

Preferably, the sound generating device further comprises a support clamped on the inner wall of the face cover, and the sound generating unit is fixedly arranged in the inner cavity of the shell through the support; the bracket is provided with a stepped hole corresponding to the sound adjusting hole, the magnetic separation sheet penetrates through the stepped hole, and the flange is tightly attached to the stepped surface of the stepped hole.

Preferably, a sound adjusting hole waterproof net and a sound adjusting hole steel net are further arranged in the stepped hole, and the sound adjusting hole waterproof net is located between the magnetic isolation sheet and the sound adjusting hole steel net.

Preferably, the bracket is further provided with a positioning hole corresponding to the sound outlet hole, the positioning hole is provided with a sound outlet hole waterproof net and a sound outlet hole steel mesh, and the sound outlet hole waterproof net is located between the positioning hole and the sound outlet hole steel mesh.

Preferably, the sound generating unit is connected with an earphone cord, and the ear shell is provided with a cord hole for the earphone cord to penetrate out.

One or more technical solutions provided in the magnetic shield sheet according to the embodiments of the present invention have at least the following technical effects:

1. this magnetism dustproof headset separates magnetism piece will on the tuning hole is just right sound producing unit's basis, adopt it will to separate the magnetism piece the tuning hole stops, makes sound producing unit's normal magnetic line can't pierce through separate the magnetism piece to changed the mode that original sound producing unit directly passed through the tuning hole, makeed structurally reduced by a wide margin because of the external metal particle entering that the magnetic line of force leaked and arouse the shell cavity is in and is attached to sound producing unit possibility promotes sound producing unit performance's stability and reliability.

2. The lateral slits distributed in a fan shape are arranged, so that the normal magnetic lines of force of the sound generating unit are isolated, the sound of the sound generating unit is emitted without being blocked, and the sound effect of the earphone is not influenced. Because the lateral slit is laterally opposite to the sound production unit, and because of different polarity directions, external metal particles cannot enter the cavity of the shell through the lateral slit, and therefore the metal particles around the sound adjustment hole are effectively isolated from entering and being attached to the sound production unit.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective view of a magnetic isolation and dust prevention earphone (with a wearing ring) provided in an embodiment of the present invention;

fig. 2 is a separated view of a wearing ring of the magnetic isolation and dust prevention earphone according to the embodiment of the present invention;

fig. 3 is a partially exploded view of a magnetic isolation and dust prevention earphone according to an embodiment of the present invention;

FIG. 4 is another perspective view of the magnetic isolation and dust control earphone (with wearing ring) according to the embodiment of the present invention;

FIG. 5 is a schematic view of a bracket mounting position provided by an embodiment of the present invention;

fig. 6 is a diagram showing a separation state of the tone hole waterproof mesh, the tone hole steel mesh, the sound outlet hole waterproof mesh and the sound outlet hole steel mesh mounted on the bracket according to the embodiment of the present invention;

FIG. 7 is a schematic view of the magnetic shield and the bracket according to the embodiment of the present invention;

fig. 8 is a perspective view of a magnetic shield according to an embodiment of the present invention.

Fig. 9 is a partially enlarged schematic view of a mark a in fig. 8.

Description of reference numerals:

10-shell, 11-earshell, 111-line hole, 12-face cover, 121-tone adjusting hole, 122-tone outlet hole, 13-back shell and 14-wearing ring;

20-sound output unit, 21-earphone line;

30-magnetism isolating pieces, 31-disk-shaped base bodies, 311-arch bodies, 32-flanges and 33-lateral thin slits;

40-bracket, 41-step hole, 411-sound adjusting hole waterproof net, 412-sound adjusting hole steel net, 42-positioning hole, 421-sound outlet hole waterproof net and 422-sound outlet hole steel net.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used 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 one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 3, a magnetic isolation and dust prevention earphone includes a housing 10 and a sound generating unit 20 disposed in an inner cavity of the housing 10, wherein the housing 10 is provided with a sound adjusting hole 121 and a sound emitting hole 122, the sound adjusting hole 121 is disposed opposite to the sound generating unit 20, and the sound emitting hole 122 side is disposed opposite to the sound generating unit 20; specifically, the sound generating unit 20 is a horn member; of course, in order to facilitate the wearing of the magnetic-isolation and dust-proof earphone, a wearing ring 14 can be added on the shell 10. As is known, the sound generating unit of the earphone has a structure that forms an inherent magnetic field and a magnetic line direction, and the use environment of the earphone is limited to a certain extent under the action of the magnetic field because the sound adjusting hole is aligned with the sound adjusting hole, particularly in an environment with large dust, suspended metal particles can be adsorbed to the position of the sound adjusting hole, but the sound adjusting hole cannot be completely sealed due to the sound emitting or frequency adjusting requirement, so that the metal particles can enter the inside of the earphone to cause the failure or performance reduction of the sound generating unit or components. According to the utility model, the magnetism isolating piece 30 made of the metal material with the magnetic conductivity is additionally arranged, and on the basis of the structure that the sound adjusting hole 121 is opposite to the sound generating unit 20, the magnetism isolating piece 30 is adopted to block the sound adjusting hole 121, so that the normal magnetic force lines of the sound generating unit 20 cannot penetrate through the magnetism isolating piece 30, the mode that the original sound generating unit directly penetrates through the sound adjusting hole is changed, the possibility that external metal particles enter the cavity of the shell 10 and are attached to the sound generating unit 20 due to the leakage of the magnetic force lines is greatly reduced structurally, and the stability and reliability of the performance of the sound generating unit 20 are improved.

As shown in fig. 3 and 4, the casing 10 includes an earshell 11 with two open ends, and a front cover 12 and a rear cover 13 respectively detachably mounted on the two open ends of the earshell 11, and the tuning hole 121 and the sound outlet 122 are both disposed on the front cover 12. In this embodiment, the front cover 12 and the rear cover 13 are conveniently detached and installed at two open ends of the ear shell 11 by a snap-fit manner; of course, the structure mode of the buckle is not limited, and the buckle can be disassembled and assembled by adopting a bolt connection mode and the like. Specifically, the tuning hole 121 is located in the middle of the face cover 12 and corresponds to the front of the sound generating unit 30; the sound outlet 122 is located at a side position of the face cover 12, and is in a lateral corresponding relationship with the sound generating unit 20.

As shown in fig. 4, the sound generating unit 20 is connected to an earphone cord 21, and the ear shell 11 is provided with a cord hole 111 through which the earphone cord 21 passes.

As shown in fig. 5, the magnetic isolation and dust prevention earphone further includes a bracket 40, and the sound generating unit 20 is fixed in the inner cavity of the housing 10 through the bracket 40. In this embodiment, the bracket 40 is installed on the inner wall of the face cover 12 in a snap-fit manner. Specifically, the bracket 40 and the inner wall of the face cover 12 are designed in a copying manner, and the face cover 12 is provided with a positioning protrusion, so that the bracket 40 can be conveniently and firmly embedded on the inner wall of the face cover 12 through the positioning of the positioning protrusion.

As shown in fig. 5 and 6, in order to prevent moisture from entering the inner cavity of the casing 10 through the tuning hole 121 and improve the waterproof property of the magnetic isolation dustproof earphone, in the present embodiment, a tuning hole waterproof net 411 is provided in the stepped hole 41. Of course, in order to improve the strength of the sound adjusting hole 121 of the magnetic isolation and dust prevention earphone and filter dust with larger particle size, the present embodiment is provided with a sound adjusting hole steel mesh 412 inside the stepped hole 41. Specifically, the tuning hole waterproof mesh 411 is located between the magnetism isolating sheet 30 and the tuning hole steel mesh 412, and can play a role in protecting the tuning hole waterproof mesh 411.

Further, the bracket 40 is further provided with a positioning hole 42 corresponding to the sound outlet 122, the positioning hole 42 is provided with a sound outlet hole waterproof mesh 421 and a sound outlet hole steel mesh 422, and the sound outlet hole waterproof mesh 421 is located between the positioning hole 42 and the sound outlet hole steel mesh 422. Specifically, the functions of the sound hole waterproof net 421 and the sound hole steel net 422 are the same as the functions of the sound adjustment hole waterproof net 411 and the sound adjustment hole steel net 412, and therefore details are not repeated herein.

As shown in fig. 7, 8 and 9, the magnetic shield 30 is mounted on the bracket 40. In this embodiment, the magnetism isolating sheet 30 includes a disk-shaped base 31 and a flange 32, and the flange 32 is formed by extending outward from the outer edge of the disk-shaped base 31. Specifically, the bracket 40 is provided with a stepped hole 41 corresponding to the tuning hole 121, the magnetism isolating sheet 30 penetrates through the stepped hole 41, and the flange 32 is tightly attached to the stepped surface of the stepped hole 41, so that the magnetism isolating sheet 30 and the tuning hole 121 are correspondingly arranged, that is, the magnetism isolating sheet 30 is additionally arranged between the sound generating unit 20 and the tuning hole 121, and the original direction of magnetic lines passing through the tuning hole area can be changed through the magnetism isolating sheet 30, thereby preventing external metal particles from directly entering through the tuning hole 121 due to leakage of the magnetic lines of force and affecting the stability and reliability of the sound generating unit 20.

Further, a plurality of arch bodies 311 are provided on the arc-shaped portion of the disk-shaped base 31. In this embodiment, the plurality of the arch bodies 311 are formed by bulging the arc-shaped portion of the disk-shaped base 31 toward one side of the disk space, and preferably, the plurality of the arch bodies 311 are uniformly distributed. Lateral slits 33 are opened between each of the plurality of arch-shaped bodies 311 and the arc-shaped portion of the disc-shaped base 31, so that the lateral slits 33 are disposed to the sound emitting unit 20. Specifically, the lateral slits 33 are uniformly distributed, so that normal magnetic lines of force of the sound generating unit 20 are isolated, and meanwhile, sound of the sound generating unit 20 is emitted without being blocked, and the output sound effect is not affected. Because the lateral slit 33 laterally faces the sound generating unit 20 and because the polarity directions are different, external metal particles cannot enter the cavity of the housing 10 through the lateral slit 33, and therefore the metal particles around the sound adjusting hole 121 are effectively isolated from entering and attached to the sound generating unit 20.

Further, the magnetic shielding sheet 30 is made of a metal material having a magnetic permeability. Further, the disk-shaped base 31, the flange 32, and the arch 311 are integrally press-molded. Through the structure and process selection of the magnetism isolating sheet 30, on one hand, the magnetism isolating effect is achieved, and on the other hand, the processing cost and the processing efficiency of the magnetism isolating sheet 30 are effectively reduced due to the characteristics of the processing process of the magnetism isolating sheet.

Further, in order to match with the aesthetic property and the requirement of personalized design of the appearance design of the magnetic isolation and dust prevention earphone, the shape of the outer edge of the flange 32 can be designed into a round, square, runway or oval structure. Specifically, the outer edge of the flange 32 is designed in a circular structure.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A magnetism-isolating and dust-preventing earphone comprises a shell and a sound production unit arranged in the inner cavity of the shell, and is characterized by further comprising a magnetism-isolating sheet which is arranged in the shell and corresponds to a transmission unit, wherein the magnetism-isolating sheet comprises a disk-shaped base body and a flange, and the flange is formed by extending outwards from the outer edge of the disk-shaped base body; the disc-shaped base body is characterized in that a plurality of arch-shaped bodies are arranged on the arc-shaped part of the disc-shaped base body, lateral thin slits are formed between the arch-shaped bodies and the arc-shaped part of the disc-shaped base body, and the lateral thin slits are arranged on the side of the sound generating unit.

2. The magnetism-isolating and dust-preventing earphone as claimed in claim 1, wherein the plurality of arcuate bodies are formed by bulging an arcuate portion of the disk-shaped base toward a side of the disk space thereof.

3. The magnetism and dust isolating earphone according to claim 1, wherein the outer rim of the flange is shaped as a circular, square, racetrack or oval structure.

4. The magnetism-isolating and dust-preventing earphone according to claim 1, wherein the magnetism-isolating sheet is made of a metal material having a magnetic permeability.

5. The magnetism-isolating and dust-preventing earphone according to claim 4, wherein the disk-shaped base, the flange and the arch are integrally formed by punching.

6. The magnetism-isolating and dust-preventing earphone according to any one of claims 1 to 5, wherein the casing comprises an earshell with openings at both ends, and a face cover and a rear cover which are respectively dismounted at both ends of the earshell; the surface cover is provided with a sound adjusting hole and a sound outlet hole, the sound outlet hole is laterally arranged on the sound generating unit, the sound adjusting hole is arranged right opposite to the sound generating unit, and the magnetic isolating sheet is arranged between the sound adjusting hole and the sound generating unit.

7. The magnetism-isolating and dust-preventing earphone according to claim 6, further comprising a bracket clamped on the inner wall of the face cover, wherein the sound generating unit is fixedly arranged in the inner cavity of the housing through the bracket; the bracket is provided with a stepped hole corresponding to the sound adjusting hole, the magnetic separation sheet penetrates through the stepped hole, and the flange is tightly attached to the stepped surface of the stepped hole.

8. The magnetism-isolating and dust-preventing earphone according to claim 7, wherein a sound-adjusting hole waterproof net and a sound-adjusting hole steel net are further disposed in the stepped hole, and the sound-adjusting hole waterproof net is located between the magnetism-isolating sheet and the sound-adjusting hole steel net.

9. The magnetic isolation and dust prevention earphone according to claim 7, wherein the bracket further comprises a positioning hole corresponding to the sound outlet hole, the positioning hole is provided with a sound outlet hole waterproof mesh and a sound outlet hole steel mesh, and the sound outlet hole waterproof mesh is located between the positioning hole and the sound outlet hole steel mesh.

10. The magnetism-isolating and dust-preventing earphone according to claim 6, wherein: the sound production unit is connected with an earphone cord, and a cord hole for the earphone cord to penetrate out is formed in the ear shell.