CN210183520U

CN210183520U - Loudspeaker

Info

Publication number: CN210183520U
Application number: CN201920922411.4U
Authority: CN
Inventors: Li Ma; 马力
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-03-24
Anticipated expiration: 2029-06-18

Abstract

The utility model belongs to the technical field of electroacoustic devices, in particular to a loudspeaker, which comprises a shell, T iron, a magnet, a voice coil and a vibrating diaphragm; the voice coil is characterized in that an accommodating cavity with an opening is formed in the shell, the T iron is arranged in the accommodating cavity, the magnet is sleeved on the T iron, the top of the magnet is provided with a washer, a magnetic gap is formed between the inner side wall of the magnet and the outer side wall of the T iron, the vibrating diaphragm is arranged at the opening, one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil extends into the magnetic gap; the opening of the shell is provided with a limiting part, and the limiting part is arranged on the outer side of the vibrating diaphragm so as to enable the vibrating diaphragm to vibrate within a set range; when the user drew out fast after wearing the in-ear earphone, the vibrating diaphragm received the effort of atmospheric pressure and toward keeping away from and hold the chamber direction motion, until with spacing portion contact, stopped continuing toward keeping away from and hold the chamber direction motion, played the excessive deformation effect of prevention vibrating diaphragm.

Description

Loudspeaker

Technical Field

The utility model belongs to the technical field of the electroacoustic device, especially, relate to a loudspeaker.

Background

The in-ear earphone of traditional structure is when test or use, when earphone and test fixture separation or earphone take out in the ear fast, speaker cavity's atmospheric pressure and outside atmospheric pressure inconsistent in the earphone, atmospheric pressure difference between the two can outwards pull up the vibrating diaphragm, the atmospheric pressure difference is big more, the pulling force of production is big more, it is too big when the pulling force, will lead to the vibrating diaphragm to excessively warp, make it can't bounce back the exact position, the voice coil loudspeaker voice coil can block even and die in small magnetic gap, at this moment, the frequency response curve of speaker will seriously change, unable normal use.

In order to solve the problems, when the existing earphone is designed, the air pressure problem during testing and wearing is solved by adopting a mode of opening a pressure relief hole in a front cavity; however, in the current mainstream TWS wireless earphone, the selected units are very small, the space of the inner cavity is also very small, no hole is formed in the position, and even if the operation difficulty of post-processing of the hole is very large, a pressure relief hole is not adopted generally; meanwhile, the pressure relief hole is used, so that certain loss is caused to the bass of the earphone, and the bass of the micro unit is not enough originally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a loudspeaker aims at solving prior art, when earphone and test fixture separation or earphone take out from the ear fast, the loudspeaker in the earphone leads to the technical problem of the excessive deformation of vibrating diaphragm and unable sound production because of the atmospheric pressure of its inner chamber is inconsistent with outside atmospheric pressure.

In order to achieve the above object, an embodiment of the present invention provides a speaker, which includes a housing, a T-iron, a magnet, a voice coil, and a diaphragm; the voice coil is characterized in that an accommodating cavity with an opening is formed in the shell, the T iron is arranged in the accommodating cavity, the magnet is sleeved on the T iron, the top of the magnet is provided with a washer, a magnetic gap is formed between the inner side wall of the magnet and the outer side wall of the T iron, the vibrating diaphragm is arranged at the opening, one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil extends into the magnetic gap; the opening of the shell is provided with a limiting part, and the limiting part is arranged on the outer side of the vibrating diaphragm so that the vibrating diaphragm vibrates within a set range.

Optionally, the limiting portion is annular and has an inner ring and an outer ring, the outer ring of the limiting portion is connected to the housing, and the inner ring of the limiting portion extends to form a convex edge in a direction close to the accommodating cavity.

Optionally, the limiting part and the housing are integrally formed.

Optionally, at least one vent hole is arranged on the limiting part.

Optionally, the T-iron comprises a base portion and a magnetically permeable portion; the bottom ring part is connected in the accommodating cavity, the magnet is connected on the bottom ring part, the magnetic conduction part penetrates through the magnet and is connected with the bottom ring part, and a magnetic gap is formed between the outer side wall of the magnetic conduction part and the inner side wall of the magnet.

Optionally, a dust cover is connected to the middle of the diaphragm.

Optionally, the loudspeaker further comprises a volume adjuster; the volume adjusting piece is arranged between the vibrating diaphragm and the limiting part.

Optionally, a copper ring is arranged on the outer ring of the diaphragm, the copper ring is connected in the containing cavity, one end of the volume adjusting piece is connected to the copper ring, and the other end of the volume adjusting piece is abutted to the bottom surface of the limiting portion.

Optionally, the limiting portion is parallel to the diaphragm.

Optionally, the volume adjuster is a spring or a washer.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the speaker have one of following technological effect at least: the opening of the shell is provided with a limiting part, the limiting part is used for limiting the vibrating diaphragm, and an enough gap is formed between the limiting part and the vibrating diaphragm, so that the vibrating diaphragms cannot be contacted with each other during vibration in the normal use process, and the tone quality is not influenced; when a user wears the in-ear earphone and then quickly pulls out the in-ear earphone, the air pressure between the earphone and the auditory canal is smaller than the air pressure in the accommodating cavity of the loudspeaker, the vibrating diaphragm moves in the direction away from the accommodating cavity under the action of the air pressure until the vibrating diaphragm is contacted with the limiting part, and the vibrating diaphragm stops moving in the direction away from the accommodating cavity continuously, so that the condition that the vibrating diaphragm fails due to moving beyond the set range is greatly reduced, and the effect of preventing the vibrating diaphragm from excessively deforming is achieved; meanwhile, when the test fixture is separated from the earphone, the condition that the vibrating diaphragm excessively deforms due to the generated air pressure difference can be greatly reduced; the limiting part is additionally arranged, so that the stability of the loudspeaker is improved, and the reliability and the user experience of the loudspeaker are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced 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 without inventive labor.

Fig. 1 is a cross-sectional view of a speaker according to an embodiment of the present invention.

Fig. 2 is a top view of a speaker according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-shell 11-containing cavity 20-T iron

21-bottom ring part 22-magnetic conductive part 30-magnet

40-voice coil 50-diaphragm 51-dust cover

52-copper ring 60-washer 70-magnetic gap

80-spacing part 81-convex edge 82-vent hole

90-volume adjustment member.

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 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 fig. 1-2 are exemplary and intended to be used to illustrate embodiments of the present invention, and should not be construed as limiting the invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the 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," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1, a speaker is provided, which is applied to an earphone, and includes a housing 10, a T-bar 20, a magnet 30, a voice coil 40, and a diaphragm 50; a containing cavity 11 with an opening is arranged in the shell 10, the T iron 20 is arranged in the containing cavity 11, the magnet 30 is sleeved on the T iron 20, the top of the magnet 30 is provided with a washer 60, a magnetic gap 70 is formed between the inner side wall of the magnet 30 and the outer side wall of the T iron 20, the diaphragm 50 is arranged at the opening, one end of the voice coil 40 is connected to the diaphragm 50, and the other end of the voice coil 40 extends into the magnetic gap 70; the opening of the housing 10 is provided with a limiting portion 80, and the limiting portion 80 is disposed on the outer side of the diaphragm 50 to limit the diaphragm 50 from vibrating within a set range.

In the embodiment of the present invention, after the voice coil 40 is powered on, the voice coil 40 is vibrated by the applied force in the magnetic gap 70, so that the diaphragm 50 is vibrated to generate sound; the opening of the shell 10 is provided with a limiting part 80, the limiting part 80 is used for limiting the vibrating diaphragm 50, and an enough gap is formed between the limiting part 80 and the vibrating diaphragm 50, so that the vibrating diaphragm 50 cannot be contacted with each other when vibrating in the normal use process, and the tone quality is not influenced; when a user wears the in-ear earphone and then quickly pulls out the in-ear earphone, the air pressure between the earphone and the ear canal is smaller than the air pressure in the accommodating cavity 11 of the loudspeaker, the vibrating diaphragm 50 moves towards the direction far away from the accommodating cavity 11 under the action of the air pressure until contacting with the limiting part 80, and the vibrating diaphragm stops moving towards the direction far away from the accommodating cavity 11, so that the condition that the vibrating diaphragm 50 fails due to moving beyond the set range is greatly reduced, and the effect of preventing the vibrating diaphragm 50 from excessively deforming is achieved; meanwhile, when the test fixture is separated from the earphone, the condition that the vibrating diaphragm 50 is excessively deformed due to the generated air pressure difference can be greatly reduced; the limiting part 80 is additionally arranged, so that the stability of the loudspeaker is improved, and the reliability and the user experience of the loudspeaker are improved.

In another embodiment of the present invention, as shown in fig. 2, the position-limiting portion 80 of the speaker is ring-shaped and has an inner ring and an outer ring, the outer ring of the position-limiting portion 80 is connected to the housing 10, and the inner ring of the position-limiting portion 80 extends toward the direction close to the accommodating cavity 11 to form a convex edge 81; the limiting portion 80 is configured to have a ring shape corresponding to the shape of the diaphragm 50, and the limiting effect on the diaphragm 50 is further improved by the configuration of the ring-shaped limiting portion 80 and the convex edge 81.

In another embodiment of the present invention, as shown in fig. 1, the limiting portion 80 of the speaker is integrally formed with the housing 10, so that the structure is stable and the processing and assembly are convenient.

In another embodiment of the present invention, as shown in fig. 2, at least one vent 82 is disposed on the limiting portion 80 of the speaker, and the vent 82 is disposed to facilitate sound transmission and improve sound effect; when a plurality of vent holes 82 are provided, the vent holes 82 are uniformly arranged on the stopper portion 80, and the sound transmission effect is further improved.

Furthermore, four vent holes 82 are provided in the speaker stopper 80.

In another embodiment of the present invention, as shown in fig. 1, the T-iron 20 of the speaker includes a bottom ring portion 21 and a magnetic conductive portion 22; the bottom ring part 21 is connected in the accommodating cavity 11, the magnet 30 is connected on the bottom ring part 21, the magnetic conduction part 22 passes through the magnet 30 and is connected with the bottom ring part 21, and a magnetic gap 70 is formed between the outer side wall of the magnetic conduction part 22 and the inner side wall of the magnet 30; one end of the voice coil 40 extends into the magnetic gap 70, and after the T-iron 20 and the voice coil 40 are powered on, the T-iron 20 generates a magnetic field, so that the voice coil 40 generates vibration and generates sound after being subjected to the action of the magnetic field force.

In another embodiment of the present invention, as shown in fig. 1, the middle of the diaphragm 50 of the speaker is connected to a dust cover 51, so as to reduce the amount of external dust particles entering the speaker through the through hole in the middle of the diaphragm 50, thereby affecting the speaker and further improving the stability of the speaker.

In another embodiment of the present invention, as shown in fig. 1, the speaker of the speaker further includes a volume adjuster 90; the volume adjusting member 90 is disposed between the diaphragm 50 and the limiting portion 80; volume adjusting member 90 disposes according to the distance of setting for between spacing portion 80 and the vibrating diaphragm 50, and different distances dispose the volume adjusting member 90 of unidimensional not, add volume adjusting member 90 and reduce the internal clearance of speaker, and greatly reduced speaker's inside accessory improves the tone quality and the overall stability of speaker because of the noise that rocks or collide the production.

In another embodiment of the present invention, as shown in fig. 1, a copper ring 52 is disposed on the outer ring of the diaphragm 50 of the speaker, the copper ring 52 is connected to the accommodating cavity 11, one end of the volume adjusting member 90 is connected to the copper ring 52, the other end of the volume adjusting member 90 abuts against the bottom surface of the limiting portion 80, the volume adjusting member 90 contacts the copper ring 52, and the volume adjusting member 90 is prevented from interfering with the vibration sound of the diaphragm 50.

In another embodiment of the present invention, as shown in fig. 1, the limiting portion 80 of the speaker is parallel to the diaphragm 50, so as to improve the limiting function of the limiting portion 80 and further improve the stability of the speaker.

In another embodiment of the present invention, the volume adjusting member 90 of the speaker is a spring or a washer, which is convenient for installation and maintenance and has a stable structure.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A loudspeaker is characterized by comprising a shell, T iron, a magnet, a voice coil and a vibrating diaphragm; the voice coil is characterized in that an accommodating cavity with an opening is formed in the shell, the T iron is arranged in the accommodating cavity, the magnet is sleeved on the T iron, the top of the magnet is provided with a washer, a magnetic gap is formed between the inner side wall of the magnet and the outer side wall of the T iron, the vibrating diaphragm is arranged at the opening, one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil extends into the magnetic gap; the opening of the shell is provided with a limiting part, and the limiting part is arranged on the outer side of the vibrating diaphragm so that the vibrating diaphragm vibrates within a set range.

2. The loudspeaker of claim 1, wherein the position-limiting portion is annular and has an inner ring and an outer ring, the outer ring of the position-limiting portion is connected to the housing, and the inner ring of the position-limiting portion extends toward the accommodating cavity to form a convex edge.

3. The speaker of claim 1, wherein the limiter is integrally formed with the housing.

4. The loudspeaker of claim 1, wherein the limiting portion has at least one vent hole.

5. The loudspeaker of claim 1, wherein the T-iron comprises a base portion and a magnetically permeable portion; the bottom ring part is connected in the accommodating cavity, the magnet is connected on the bottom ring part, the magnetic conduction part penetrates through the magnet and is connected with the bottom ring part, and a magnetic gap is formed between the outer side wall of the magnetic conduction part and the inner side wall of the magnet.

6. The loudspeaker according to any one of claims 1 to 5, wherein a dust cover is connected to the middle of the diaphragm.

7. A loudspeaker according to any one of claims 1 to 5, wherein the loudspeaker further comprises a volume adjuster; the volume adjusting piece is arranged between the vibrating diaphragm and the limiting part.

8. The loudspeaker according to claim 7, wherein a copper ring is arranged on the outer ring of the diaphragm, the copper ring is connected in the accommodating cavity, one end of the volume adjusting member is connected to the copper ring, and the other end of the volume adjusting member abuts against the bottom surface of the limiting part.

9. The loudspeaker of any one of claims 1 to 5, wherein the limiting part is arranged in parallel with the diaphragm.

10. A loudspeaker according to claim 7, wherein the volume adjuster is a spring or a washer.