CN218124920U

CN218124920U - Earphone speaker with passive diaphragm

Info

Publication number: CN218124920U
Application number: CN202123206882.1U
Authority: CN
Inventors: 温增丰; 温景纶; 温信浩
Original assignee: Dongguan Fenglun Electronic Technology Co ltd
Current assignee: Dongguan Fenglun Electronic Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-12-23
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses an earphone speaker with a passive diaphragm, which comprises a speaker main body, wherein the rear side of the speaker main body is provided with a rear sound cavity, and the rear side opening of the rear sound cavity is covered with a diaphragm; borrow this, cover the diaphragm through the rear side opening department in back sound chamber to can drive the diaphragm vibration through the vibration of the vibrating diaphragm of loudspeaker main part, so that the diaphragm vibration and the air current that drives back sound chamber flow, thereby can strengthen the low frequency effect, make the audio of loudspeaker better.

Description

Earphone speaker with passive diaphragm

Technical Field

The utility model belongs to the technical field of loudspeaker technique and specifically relates to indicate an earphone loudspeaker with passive form diaphragm.

Background

A conventional loudspeaker generally comprises a bracket, a yoke and a vibrating diaphragm, wherein the yoke and the vibrating diaphragm are arranged on the bracket, a magnet and a washer are arranged in the yoke to form a magnetic gap, and a voice coil is arranged on the vibrating diaphragm and can extend to the magnetic gap; and sound is generated by the voice coil under current driving to vibrate the diaphragm. The loudspeaker of this kind of structure need design the audio when production is used and adjusts, especially the through-hole department of its back chamber adopts the tuning paper to adjust, though the tuning paper can reach the purpose of tuning, nevertheless because it can't receive the vibration of vibrating diaphragm and vibrate in order to produce the low frequency effect, leads to the holistic low frequency effect of loudspeaker not good enough.

Therefore, a new technology needs to be developed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the deficiency of the prior art, and the main objective of the present invention is to provide an earphone speaker with a passive diaphragm, which enhances the low frequency effect and makes the sound effect of the speaker better.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an earphone speaker with passive form diaphragm, includes the loudspeaker main part, and the rear side of this loudspeaker main part has the back sound chamber, and the rear side opening department in this back sound chamber covers has the diaphragm.

As a preferred scheme, the loudspeaker main body comprises a bracket, a vibrating diaphragm, a rear cavity shell, a yoke, a magnet, a washer, a voice coil and a PCB (printed circuit board); the vibrating diaphragm and the rear cavity shell cover the front side and the back side of the support respectively, and the yoke is mounted on the support and extends into the rear cavity shell; the magnet is arranged in the yoke, the washer is stacked on the magnet, and the voice coil is arranged on the vibrating diaphragm and extends to a position between the magnet and the yoke; the rear cavity shell and the bracket form the rear sound cavity positioned at the rear side of the vibrating diaphragm; the PCB is arranged on the rear side of the support, and the diaphragm covers the rear side of the rear cavity shell.

As a preferred scheme, a first mounting position is arranged on the front side of the bracket, and a second mounting position and a third mounting position are arranged on the back side of the bracket; the second mounting position is positioned at the periphery of the third mounting position; the diaphragm is assembled at the first installation position, the rear cavity shell is assembled at the second installation position, and the yoke is assembled at the third installation position.

As a preferred scheme, the support has a plurality of first through-holes that link up the positive and negative two sides of support, and a plurality of first through-holes are arranged in the periphery of second installation position along the annular interval in proper order, the rear side of support is equipped with first sound blocking paper, first sound blocking paper covers in the rear side of first through-hole.

As a preferable scheme, an installation concave position is arranged on the rear side of the support, the installation concave position is positioned on the periphery of the second installation position and positioned on one side of the first through hole, and the PCB is installed in the installation concave position.

As a preferred scheme, a plurality of second through holes penetrating through the front surface and the back surface of the support are formed between the second mounting position and the third mounting position, the second through holes are sequentially arranged along the ring shape at intervals, second sound blocking paper is arranged on the rear side of the support, and the second sound blocking paper covers the rear side of the second through holes.

As a preferred scheme, the rear chamber shell has well cavity, the rear side of rear chamber shell is provided with fourth installation position, the diaphragm assembles in fourth installation position, the rear side of rear chamber shell has the perforating hole, the perforating hole link up well cavity, the diaphragm covers in the rear side of perforating hole.

As a preferable scheme, a tone tuning hole is formed in the side wall of the rear cavity shell, and third sound blocking paper covers the tone tuning hole.

As a preferable scheme, the periphery of the diaphragm is wrapped with a sound amplifying cover, the sound amplifying cover is connected to the loudspeaker main body, and the sound amplifying cover is in a hollow shape with two open ends.

As a preferable scheme, the sound amplifying cover is in a circular table shape which gradually increases from front to back.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, concretely speaking, according to the technical scheme, the diaphragm is covered at the rear side opening of the rear sound cavity, so that the diaphragm can be driven to vibrate through the vibration of the vibrating diaphragm of the loudspeaker main body, the diaphragm can vibrate to drive the airflow of the rear sound cavity to flow, the low-frequency effect can be enhanced, and the sound effect of the loudspeaker is better; and through the arrangement of the sound amplifying cover, the phenomenon that the membrane is damaged in production can be effectively prevented, and the sound amplifying cover has a certain sound amplifying effect.

To illustrate the structural features and technical means of the present invention more clearly and for a specific purpose and function, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a perspective view of the overall structure of the embodiment of the present invention.

Fig. 2 is a perspective view of another angle overall structure of the embodiment of the present invention;

fig. 3 is an exploded view of an embodiment of the invention;

fig. 4 is another exploded view of an embodiment of the present invention;

fig. 5 is a cross-sectional view of an embodiment of the invention.

The attached drawings indicate the following:

10. bracket 11, first installation position

12. A second mounting position 13 and a third mounting position

14. First through hole 15, mounting concave position

16. Second through hole 20 and diaphragm

30. Rear cavity shell 31, hollow cavity

32. Fourth mounting site 33, through hole

34. Tone tuning hole 35, annular positioning groove

40. Yoke iron 41 and third through hole

50. Magnet 60, washer

70. Voice coil 80, PCB board

90. Diaphragm 101, back sound cavity

102. First sound blocking paper 103 and second sound blocking paper

104. Third sound blocking paper 105 and sound amplifying cover

1051. Annular positioning convex edge 106 and tuning net

201. A front cover.

Detailed Description

Fig. 1 to 5 show a specific structure of an embodiment of the present invention.

An earphone speaker with a passive diaphragm comprises a speaker body, wherein the rear side of the speaker body is provided with a rear sound cavity 101, and the rear opening of the rear sound cavity 101 is covered with a diaphragm 90. The loudspeaker main body comprises a support 10, a vibrating diaphragm 20, a rear cavity shell 30, a yoke 40, a magnet 50, a washer 60, a voice coil 70 and a PCB 80; the vibrating diaphragm 20 and the rear cavity shell 30 are respectively covered on the front and the back of the bracket 10, and the yoke 40 is mounted on the bracket 10 and extends into the rear cavity shell 30; the magnet 50 is arranged in the yoke 40, the washer 60 is stacked on the magnet 50, and the voice coil 70 is mounted on the diaphragm 20 and extends between the magnet 50 and the yoke 40; the rear cavity shell 30 and the bracket 10 form the rear sound cavity 101 located at the rear side of the diaphragm 20; the PCB board 80 is disposed on the rear side of the support 10, the diaphragm 90 covers the rear side of the rear cavity housing 30, the front side of the diaphragm 20 is further provided with a front cover 201, and the front cover 201 covers the outside of the diaphragm 20 and is connected to the front side of the support 10. So, through covering diaphragm 90 in the rear opening department of back sound chamber 101 to can drive diaphragm 90 vibration through the vibration of the vibrating diaphragm 20 of loudspeaker main part, so that diaphragm 90 vibrates and the air current that drives back sound chamber 101 flows, thereby can strengthen the low frequency effect.

Preferably, a first mounting position 11 is arranged on the front surface of the bracket 10, and a second mounting position 12 and a third mounting position 13 are arranged on the back surface of the bracket 10; the second mounting position 12 is positioned at the periphery of the third mounting position 13; the diaphragm 20 is mounted at the first mounting location 11, the rear cavity housing 30 is mounted at the second mounting location 12, and the yoke 40 is mounted at the third mounting location 13.

Preferably, the support 10 has a plurality of first through holes 14 penetrating through both sides of the support 10, the plurality of first through holes 14 are sequentially arranged at the periphery of the second mounting position 12 along a ring shape at intervals, the rear side of the support 10 is provided with first sound blocking paper 102, and the first sound blocking paper 102 covers the rear side of the first through holes 14. The rear side of the bracket 10 is provided with an installation concave position 15, the installation concave position 15 is positioned at the periphery of the second installation position 12 and at one side of the first through hole 14, and the PCB board 80 is installed at the installation concave position 15.

Preferably, a plurality of second through holes 16 penetrating through the front and back surfaces of the support 10 are arranged between the second mounting position 12 and the third mounting position 13, the plurality of second through holes 16 are sequentially arranged along a ring shape at intervals, second sound blocking paper 103 is arranged on the rear side of the support 10, and the second sound blocking paper 103 covers the rear side of the second through holes 16.

Preferably, the rear cavity housing 30 has a hollow cavity 31, the rear side of the rear cavity housing 30 is provided with a fourth installation position 32, the diaphragm 90 is assembled at the fourth installation position 32, the rear side of the rear cavity housing 30 has a through hole 33, the through hole 33 penetrates through the hollow cavity 31, and the diaphragm 90 covers the rear side of the through hole 33. The side wall of the rear cavity shell 30 is provided with a tuning hole 34, and the tuning hole 34 is covered with a third sound blocking paper 104. The diaphragms 90 are mounted in the respective mounting locations by gluing.

Preferably, the periphery of the membrane 90 is wrapped with a sound amplifying cover 105, the sound amplifying cover 105 is connected to the speaker body, the sound amplifying cover 105 is hollow, two ends of the sound amplifying cover 105 are open, and preferably, the sound amplifying cover 105 is in a circular truncated cone shape which gradually increases from front to back; thus, the arrangement of the sound amplifying cover 105 can effectively prevent the membrane 90 from being damaged during production, and the sound amplifying cover 105 has a certain sound amplifying effect. The front side of the sound amplifying cover 105 is convexly provided with an annular positioning flange 1051, correspondingly, the rear side of the rear cavity housing 30 is concavely provided with an annular positioning groove 35 at the periphery of the fourth mounting position 32, and the annular positioning flange 1051 is positioned in the annular positioning groove 35. Here, the sound amplification cover 105 is set according to actual production requirements.

And, in this embodiment, diaphragm 90 is preferably polyester diaphragm 90 or sheetmetal, certainly, diaphragm 90 is not limited to above-mentioned material, only need follow actual production demand and set for can, in addition, size, thickness, shape of diaphragm 90 also can influence tone quality, intensity, rhythm and feel etc. equally, to diaphragm 90 size, thickness, shape etc. only need follow actual production demand and set for can, so, can correspond the sound of various styles, tone quality and adjust diaphragm 90 in order to realize the adaptability design.

In addition, in the present embodiment, the yoke 40 is provided with a third through hole 41, and a tuning net 106 or a sound blocking paper covers the third through hole 41.

To sum up, the design of the utility model is mainly characterized in that the rear side opening of the rear sound cavity is covered with the diaphragm, so that the diaphragm can be driven to vibrate by the vibration of the vibrating diaphragm of the loudspeaker main body, and the diaphragm vibrates to drive the airflow of the rear sound cavity to flow, thereby enhancing the low frequency effect and enabling the sound effect of the loudspeaker to be better; and through the arrangement of the sound amplifying cover, the phenomenon that the membrane is damaged in production can be effectively prevented, and the sound amplifying cover has a certain sound amplifying effect.

Claims

1. An earphone speaker with passive diaphragm characterized in that: the loudspeaker comprises a loudspeaker main body, wherein a rear sound cavity is formed in the rear side of the loudspeaker main body, and a diaphragm covers the rear opening of the rear sound cavity; the periphery of the diaphragm is wrapped with a sound amplifying cover, the sound amplifying cover is connected with the loudspeaker main body, and the sound amplifying cover is hollow with two open ends; the sound amplifying cover is in a round table shape which gradually increases from front to back; the loudspeaker main body comprises a support, a vibrating diaphragm, a rear cavity shell, a yoke, a magnet, a washer, a voice coil and a PCB; the vibrating diaphragm and the rear cavity shell cover the front side and the back side of the support respectively, and the yoke is mounted on the support and extends into the rear cavity shell; the magnet is arranged in the yoke, the washer is stacked on the magnet, and the voice coil is arranged on the vibrating diaphragm and extends to a position between the magnet and the yoke; the rear cavity shell and the bracket form the rear sound cavity positioned at the rear side of the vibrating diaphragm; the PCB is arranged on the rear side of the support, and the diaphragm covers the rear side of the rear cavity shell.

2. The earphone horn with a passive diaphragm of claim 1, wherein: the front side of the bracket is provided with a first mounting position, and the back side of the bracket is provided with a second mounting position and a third mounting position; the second mounting position is positioned at the periphery of the third mounting position; the vibrating diaphragm is assembled at the first installation position, the rear cavity shell is assembled at the second installation position, and the yoke is assembled at the third installation position.

3. The earpiece speaker with passive diaphragm of claim 2, wherein: the support has a plurality of first through-holes that link up the support tow sides, and a plurality of first through-holes are arranged in the periphery of second installation position along the annular interval in proper order, the rear side of support is equipped with first sound blocking paper, first sound blocking paper covers in the rear side of first through-hole.

4. The earpiece speaker with passive diaphragm of claim 3, wherein: the rear side of support is provided with the installation concave position, the installation concave position is located the periphery of second installation position and is located one side of first through-hole, the PCB board is installed in the installation concave position.

5. The earpiece speaker with passive diaphragm of claim 2, wherein: a plurality of second through holes penetrating through the front surface and the back surface of the support are formed between the second installation position and the third installation position, the second through holes are sequentially arranged along the ring shape at intervals, and second sound blocking paper is arranged on the rear side of the support and covers the rear side of the second through holes.

6. The earpiece speaker with passive diaphragm of claim 1, wherein: the rear cavity shell has well cavity, the rear side of rear cavity shell is provided with fourth installation position, the diaphragm assembles in fourth installation position, the rear side of rear cavity shell has the perforating hole, the perforating hole link up well cavity, the diaphragm covers in the rear side of perforating hole.

7. The earpiece speaker with passive diaphragm of claim 6, wherein: and the side wall of the rear cavity shell is provided with a sound adjusting hole, and the sound adjusting hole is covered with third sound blocking paper.