CN106792380B

CN106792380B - Passive radiation type micro loudspeaker and earphone

Info

Publication number: CN106792380B
Application number: CN201710054183.9A
Authority: CN
Inventors: 贡维勇; 吴海全; 师瑞文
Original assignee: Shenzhen Grandsun Electronics Co Ltd
Current assignee: Shenzhen Grandsun Electronics Co Ltd
Priority date: 2017-01-24
Filing date: 2017-01-24
Publication date: 2020-06-05
Anticipated expiration: 2037-01-24
Also published as: CN106792380A

Abstract

The invention relates to the technical field of earphones, and discloses a passive radiation type miniature loudspeaker, which comprises a frame and a loudspeaker assembly coaxially arranged in the frame, wherein a first through hole penetrating through the frame is formed in the center of the bottom of the frame, a second through hole is formed in the loudspeaker assembly at a position opposite to the first through hole, and a passive radiation basin opposite to the second through hole is arranged at the first through hole; and the outer end surface of the bottom side of the basin frame is provided with a damping sheet in a ring way. The invention also discloses an earphone which comprises the passive radiation type micro-speaker. According to the passive radiation type micro-horn provided by the invention, the center of the bottom of the basin frame is provided with the first through hole penetrating through the basin frame, the position, opposite to the first through hole, of the loudspeaker component is provided with the second through hole, the passive radiation basin opposite to the second through hole is arranged at the first through hole, meanwhile, the damping sheet is annularly arranged on the outer end surface of the bottom side of the basin frame, the passive radiation basin and the damping sheet are utilized to generate proper acoustic impedance, the low-frequency tone quality effect of the horn is improved, and distortion is reduced.

Description

Passive radiation type micro loudspeaker and earphone

Technical Field

The invention relates to the technical field of earphones, in particular to a passive radiation type miniature loudspeaker and an earphone.

Background

With the continuous improvement of the living standard of the material, listening to music becomes a way for relieving mood and reducing pressure of people during working leisure. Meanwhile, as people continuously pursue high-quality life, the quality of earphones is required to be higher. And the manufacturers start from the starting point of combining humanistic care and health concept, and develop ultra-low frequency deep-diving loudspeakers to meet the requirements of earphone consumers in order to enable each user to listen to life pure voice. To the earphone on the existing market, its loudspeaker unit is ordinary design, and the space volume demand of earphone inner chamber has certain limitation, is difficult to reach the demand of consumer to low frequency tone quality. Therefore, how to provide a micro speaker and an earphone that can meet the low-frequency sound quality requirements of consumers is a technical problem to be solved urgently in the industry.

Disclosure of Invention

The invention aims to provide a passive radiation type micro loudspeaker and an earphone, and aims to solve the problem that the loudspeaker unit structure of the existing earphone is limited and cannot meet the requirement of consumers on low-frequency tone quality in the prior art.

The embodiment of the invention provides a passive radiation type micro-horn, which comprises a basin frame and a loud speaker assembly coaxially arranged in the basin frame, wherein a first through hole penetrating through the basin frame is formed in the center of the bottom of the basin frame, a second through hole is formed in the loud speaker assembly at a position opposite to the first through hole, and a passive radiation basin opposite to the second through hole is arranged at the first through hole; and the outer end surface of the bottom side of the basin frame is provided with damping fins in a ring mode.

Furthermore, the passive radiation basin comprises a vibrating membrane, an elastic suspension edge annularly arranged on the periphery of the vibrating membrane, and a positioning support annularly arranged on the periphery of the elastic suspension edge.

Furthermore, the loudspeaker component comprises a U-shaped cup accommodated in the bottom of the basin frame, a magnet arranged on the inner surface of the bottom of the U-shaped cup, a loudspeaker washer arranged on the magnet, a voice coil sleeved on the periphery of the loudspeaker washer, and an annular vibrating reed arranged in the top of the basin frame and covering one side of the loudspeaker washer.

Furthermore, the center of the horn washer, the center of the magnet and the center of the U-shaped cup are provided with openings, and the openings are coaxial and communicated to form the second through hole.

Further, the basin stand comprises a first accommodating part and a second accommodating part which is integrally arranged at the center of the bottom side of the first accommodating part and is communicated with the first accommodating part; the ring-shaped vibrating reed is accommodated in the first accommodating part, the U-shaped cup, the magnet, the horn washer and the voice coil are accommodated in the second accommodating part, and the first through hole is located in the center of the bottom side of the second accommodating part.

Furthermore, a plurality of sound holes are formed in the periphery of the bottom side of the first accommodating portion, and the damping sheet is arranged on the outer end face of the bottom side of the first accommodating portion in a surrounding mode and covers the sound holes.

The embodiment of the invention also provides an earphone, which comprises a passive radiation type micro-speaker, wherein the passive radiation type micro-speaker comprises a frame and a speaker assembly coaxially arranged in the frame, a first through hole penetrating through the frame is formed in the center of the bottom of the frame, a second through hole is formed in the speaker assembly at a position opposite to the first through hole, and a passive radiation basin opposite to the second through hole is arranged at the first through hole; and the outer end surface of the bottom side of the basin frame is provided with damping fins in a ring mode.

Based on the technical scheme, the passive radiation type micro-speaker provided by the embodiment of the invention has the advantages that the center of the bottom of the frame is provided with the first through hole penetrating through the interior and the exterior of the frame, the position, opposite to the first through hole, of the loudspeaker component is provided with the second through hole, the passive radiation basin opposite to the second through hole is arranged at the first through hole, meanwhile, the damping sheet is annularly arranged on the outer end face of the bottom side of the frame, the passive radiation basin and the damping sheet are utilized to generate proper acoustic impedance, the low-frequency tone quality effect of the speaker is improved, and the distortion is reduced. In addition, the earphone provided by the embodiment of the invention improves the low-frequency tone effect, reduces distortion and effectively improves the experience effect of users by adopting the passive radiation type micro loudspeaker.

Drawings

Fig. 1 is a schematic cross-sectional view of a passive radiation-type micro-speaker according to an embodiment of the present invention;

fig. 2 is an exploded view of a passive radiation-type micro-speaker according to an embodiment of the present invention;

fig. 3 is a schematic bottom view of a passive radiation type micro-speaker according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, it should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting. The following describes the implementation of the present invention in detail with reference to specific embodiments.

As shown in fig. 1 to 3, an embodiment of the present invention provides a passive radiation type micro-speaker, which may include a frame 1 and a speaker assembly 2, wherein the frame 1 is a shell structure with an open top end and a hollow interior, and the speaker assembly 2 is disposed in the frame 1 and has a common central axis with the frame. Here, the center of the bottom of the frame 1 is provided with a first through hole 120 penetrating through the inside and outside of the frame, the speaker component 2 is provided with a second through hole 20 at a position opposite to the first through hole 120, the first through hole 120 is provided with a passive radiation basin 3 opposite to the second through hole 20, in addition, the outer end surface of the bottom side of the frame 1 is provided with a damping fin 4 in a ring manner, thus, the second through hole 20 is blocked by the passive radiation basin 3, meanwhile, the outer end surface of the bottom side of the frame 1 is blocked by the damping fin 4, and matched acoustic impedance is generated for the whole loudspeaker, thereby playing the effects of improving low frequency and distortion.

As described above, in the passive radiation type micro-speaker according to the embodiment of the present invention, the first through hole 120 penetrating through the inside and the outside of the basin frame 1 is formed at the center of the bottom of the basin frame 1, the second through hole 20 is formed at the position of the speaker component 2 accommodated in the basin frame 1, which is opposite to the first through hole 120, the passive radiation basin 3 is disposed at the first through hole 120, which is opposite to the second through hole 20, and the damping plate 4 is annularly disposed on the outer end surface of the bottom side of the basin frame 1, so that the passive radiation basin 3 and the damping plate 4 generate a suitable acoustic impedance to the whole speaker, thereby improving the low-frequency sound quality effect of the speaker, reducing distortion, and satisfying the preference of consumers for pursuing limit low-frequency sound quality.

Further, in the embodiment of the present invention, the passive radiation basin 3 may include a diaphragm 31, an elastic suspension edge 32, and a positioning bracket 33, wherein the elastic suspension edge 32 is disposed around the periphery of the diaphragm 31, and the positioning bracket 33 is disposed around the periphery of the elastic suspension edge 32. Here, the outer contours of the diaphragm 31, the elastic suspended edge 32 and the positioning bracket 33 are all preferably circular, here, the cross-sectional profile of the elastic suspended edge 32 is preferably U-shaped, and the elastic suspended edge 32 is preferably made of high damping elastic PU material. In addition, the vibration membrane 31 is preferably a honeycomb type foaming plate and is in a flat plate shape, so that the vibration membrane 31 has light weight and good hardness; the positioning bracket 33 is preferably a copper piece. Of course, according to practical situations and specific needs, in other embodiments of the invention, the passive radiation basin 3 may also be made of other structures or materials, and is not limited herein.

Further, in the embodiment of the present invention, the speaker assembly 2 may include an annular vibration plate 21, a voice coil 22, a horn washer 23, a magnet 24 and a U-shaped cup 25, wherein the U-shaped cup 25 is accommodated in the bottom inner cavity of the basin frame 1, the magnet 24 is disposed on an inner surface of the bottom of the U-shaped cup 25, the horn washer 23 is disposed on the magnet 24, the voice coil 22 is sleeved on the periphery of the horn washer 23, and in addition, the annular vibration plate 21 is disposed in the top inner cavity of the basin frame 1 and covers the upper side of the horn washer 23. And the annular vibrating reed 21, the voice coil 22, the horn washer 23, the magnet 24 and the U-shaped cup 25 are coaxially arranged and are all coaxial with the basin stand 1. Here, the horn washer 23 is preferably made of low-carbon steel, the magnet 24 is preferably made of neodymium, and the magnet 24 and the horn washer 23 are preferably fixed by bonding through a specific jig and glue; . Of course, in other embodiments of the present invention, the speaker assembly 2 may be constructed in other forms, and is not limited herein.

Further, in the embodiment of the present invention, openings are disposed at the center of the horn washer 23, the center of the magnet 24, and the center of the U-shaped cup 25, and the openings are coaxially distributed up and down and are communicated with each other to form the second through hole 20. Thus, the upper side of the second through hole 20 is covered with the ring-shaped vibrating reed 21, and the lower side is covered with the passive radiating basin 3, so that a relatively closed sound cavity is formed, and the passive radiating basin 3 can vibrate and displace up and down on the bottom side of the U-shaped cup 25 and generate a proper acoustic impedance. In addition, the inner ring and the outer ring of the ring-shaped vibrating piece 21 are provided with striped ribs (not shown in the drawings) for increasing rigidity and improving audio characteristics. Of course, according to practical situations and specific needs, in other embodiments of the invention, the second through hole 20 may also have other configurations, and is not limited herein.

Further, in the embodiment of the present invention, the frame 1 may include a first receiving portion 11 and a second receiving portion 12, and the second receiving portion 12 is integrally disposed at a center of a bottom side of the first receiving portion 11 and penetrates therethrough. Here, the ring-shaped vibrating reed 21 is accommodated and positioned in the inner cavity of the first accommodating portion 11, the U-shaped cup 25, the magnet 24, the horn washer 23, and the voice coil 22 are accommodated and positioned in the inner cavity of the second accommodating portion 12, and the first through hole 120 is located at the center of the bottom side of the second accommodating portion 12. Therefore, the total clearance height of the earphone cavity is effectively reduced by the structural form, so that the earphone is lighter, thinner and more portable, and the miniaturization development trend of earphone type audition products is adapted. Of course, according to practical conditions and specific requirements, in other embodiments of the invention, the basin stand 1 may also have other configurations, which are not limited herein.

Further, in the embodiment of the present invention, the periphery of the bottom side of the first accommodating portion 11 is provided with a plurality of sound holes 110, and the damping sheet 4 is preferably a ring-shaped sheet, which is disposed around the outer end surface of the bottom side of the first accommodating portion 11 and covers the plurality of sound holes 110, so that the damping sheet 4 also generates a certain acoustic impedance for the whole speaker, and the acoustic impedance matches with the acoustic impedance of the passive radiation basin 3, thereby improving the low-frequency sound quality effect of the speaker. In addition, in the embodiment of the present invention, the damper 4 has a notch (not labeled in the drawings) in which a wiring board 5 fixed to the outer end face of the bottom side of the first accommodating portion 11 is disposed, and the voice coil 22 is electrically connected to the wiring board 5 through an output terminal lead.

As shown in fig. 1 to 3, an embodiment of the present invention further provides an earphone, which may be a headset. Specifically, this earphone can include the miniature loudspeaker of passive radiation formula, and this miniature loudspeaker of passive radiation formula can include basin frame 1 and subassembly 2 of raising one's voice, and wherein, basin frame 1 is open-ended and hollow shell structure in inside, and subassembly 2 of raising one's voice sets up in this basin frame 1 and has common center pin rather than. Here, the center of the bottom of the frame 1 is provided with a first through hole 120 penetrating through the inside and outside of the frame, the speaker component 2 is provided with a second through hole 20 at a position opposite to the first through hole 120, the first through hole 120 is provided with a passive radiation basin 3 opposite to the second through hole 20, in addition, the outer end surface of the bottom side of the frame 1 is provided with a damping fin 4 in a ring manner, thus, the second through hole 20 is blocked by the passive radiation basin 3, meanwhile, the outer end surface of the bottom side of the frame 1 is blocked by the damping fin 4, and matched acoustic impedance is generated for the whole loudspeaker, thereby playing the effects of improving low frequency and distortion.

Based on the technical scheme, the earphone provided by the embodiment of the invention improves the low-frequency tone effect, reduces distortion and effectively improves the experience effect of users by adopting the passive radiation type micro loudspeaker.

In the present embodiment, the passive radiation basin 3 may include a diaphragm 31, an elastic suspension edge 32, and a positioning bracket 33, wherein the elastic suspension edge 32 is disposed around the periphery of the diaphragm 31, and the positioning bracket 33 is disposed around the periphery of the elastic suspension edge 32. Here, the outer contours of the diaphragm 31, the elastic suspended edge 32 and the positioning bracket 33 are all preferably circular, here, the cross-sectional profile of the elastic suspended edge 32 is preferably U-shaped, and the elastic suspended edge 32 is preferably made of high damping elastic PU material. In addition, the vibration membrane 31 is preferably a honeycomb type foaming plate and is in a flat plate shape, so that the vibration membrane 31 has light weight and good hardness; the positioning bracket 33 is preferably a copper piece.

In this embodiment, the speaker assembly 2 includes an annular vibrating reed 21, a voice coil 22, a speaker washer 23, a magnet 24 and a U-shaped cup 25, wherein the U-shaped cup 25 is accommodated in the inner cavity of the bottom of the basin frame 1, the magnet 24 is disposed on the inner surface of the bottom of the U-shaped cup 25, the speaker washer 23 is disposed on the magnet 24, the voice coil 22 is disposed on the periphery of the speaker washer 23, and in addition, the annular vibrating reed 21 is disposed in the inner cavity of the top of the basin frame 1 and covers the upper side of the speaker washer 23. And the annular vibrating reed 21, the voice coil 22, the horn washer 23, the magnet 24 and the U-shaped cup 25 are coaxially arranged and are all coaxial with the basin stand 1.

In this embodiment, the horn washer 23, the magnet 24 and the U-shaped cup 25 are provided with openings at the center thereof, and the openings are coaxially distributed and interconnected to form the second through hole 20. Thus, the upper side of the second through hole 20 is covered with the ring-shaped vibrating reed 21, and the lower side is covered with the passive radiating basin 3, so that a relatively closed sound cavity is formed, and the passive radiating basin 3 can vibrate and displace up and down on the bottom side of the U-shaped cup 25 and generate a proper acoustic impedance.

In addition, the earphone may further include a headband or the like, which is not described in detail herein with reference to the related art.

The above-mentioned embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications, substitutions and improvements within the technical scope of the present invention, and these modifications, substitutions and improvements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The passive radiation type micro-horn comprises a basin frame and a loud-speaking component coaxially arranged in the basin frame, and is characterized in that a first through hole penetrating through the basin frame is formed in the center of the bottom of the basin frame, a second through hole is formed in the loud-speaking component at a position opposite to the first through hole, and a passive radiation basin opposite to the second through hole is arranged at the first through hole; and the outer end surface of the bottom side of the basin stand is provided with damping fins in a ring manner; the basin frame is of a shell structure with an opening at the top end and a hollow interior;

loudspeaker subassembly includes annular trembler, voice coil loudspeaker voice coil, loudspeaker china department, magnet and U type cup, U type cup holding is in the basin frame bottom inner chamber, magnet sets up on the internal surface of U type bottom of cup portion, loudspeaker china department sets up on the magnet, the voice coil loudspeaker voice coil is established the periphery of loudspeaker china department, the annular trembler sets up in the basin frame top inner chamber and cover the upside of loudspeaker china department, the center department of loudspeaker china department the center department of magnet reaches the center department of U type cup all is provided with the trompil, each the coaxial and intercommunication each other of trompil forms the second through-hole, the upside closing cap of second through-hole has the annular trembler, the downside closing cap of second through-hole has the passive radiation basin.

2. The passively radiating micro-horn of claim 1, wherein the passively radiating pan includes a diaphragm, a flexible overhang surrounding the diaphragm, and a positioning bracket surrounding the flexible overhang.

3. The passive radiating horn of claim 1, wherein the frame comprises a first receiving portion and a second receiving portion integrally disposed at a center of a bottom side of the first receiving portion and penetrating therethrough; the ring-shaped vibrating reed is accommodated in the first accommodating part, the U-shaped cup, the magnet, the horn washer and the voice coil are accommodated in the second accommodating part, and the first through hole is located in the center of the bottom side of the second accommodating part.

4. The passive radiating micro-speaker as claimed in claim 3, wherein the first receiving portion has a plurality of sound holes formed on the periphery thereof, and the damping plate is disposed around the outer end surface of the first receiving portion and covers the sound holes.

5. The earphone comprises a passive radiation type micro-speaker, wherein the passive radiation type micro-speaker comprises a frame and a speaker assembly coaxially arranged in the frame, and is characterized in that a first through hole penetrating through the frame is formed in the center of the bottom of the frame, a second through hole is formed in the speaker assembly opposite to the first through hole, and a passive radiation basin opposite to the second through hole is arranged at the first through hole; and the outer end surface of the bottom side of the basin stand is provided with damping fins in a ring manner; the basin frame is of a shell structure with an opening at the top end and a hollow interior;

6. The earphone as recited in claim 5, wherein the passive radiating basin comprises a diaphragm, a flexible skirt surrounding the diaphragm, and a positioning support surrounding the flexible skirt.