CN208285533U - Sounding device and electronic equipment - Google Patents
Sounding device and electronic equipment Download PDFInfo
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- CN208285533U CN208285533U CN201820613224.3U CN201820613224U CN208285533U CN 208285533 U CN208285533 U CN 208285533U CN 201820613224 U CN201820613224 U CN 201820613224U CN 208285533 U CN208285533 U CN 208285533U
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Abstract
The utility model embodiment provides a kind of sounding device and electronic equipment, including vibrational system, magnetic circuit system, shell and antenna；The vibrational system is installed on magnetic circuit system described in the first end of the shell and is located at the lower section of the vibrational system and is fixed in the shell, and the magnetic circuit system is equipped with rear acoustic aperture；The shell includes the first part of the corresponding vibrational system and the magnetic circuit system, and integrally extends downwardly the second part beyond the magnetic circuit system bottom surface by the first part；The second end of the shell is equipped with lower cover plate, the second part of the shell, the magnetic circuit system bottom surface and the lower cover plate between be formed with and be described after the back cavity that is connected to of acoustic aperture；The antenna is arranged on the shell and/or the lower cover plate.Technical solution provided by the utility model can not only reduce the volume of sounding device while guaranteeing acoustical behavior, moreover it is possible to antenna integrated to improve integrated level on small size sounding device.
Description
Technical field
The utility model relates to sounding device technical fields.
Background technique
Sounding device is sound-generating element important in electronic product, for electric signal to be transformed into sound.Existing electronics produces
Product are more and more lightening, and the space reserved to sounding device is smaller and smaller, and loudspeaker is required to have better sound quality.
Acoustical generator is mounted in the cabinet with volume by sounding device in the prior art, and acoustical generator includes shell
It is fixed on the intracorporal magnetic circuit system of shell and vibrational system with receiving, forms back cavity between acoustical generator and cabinet, rear cavity space is bigger,
Then the low-frequency resonant frequency of product is lower, therefore the low frequency performance of product gets a promotion.The sounding device of the prior art usually has
Two kinds of structures: one is the structures for being similar to speaker, and cabinet is cuboid-type, and acoustical generator is fixed on the front panel of cabinet, shape
At the back cavity on thickness direction and rear horizontal direction, it is unfavorable for the slimming and miniaturization of product；Another structure is cabinet
Accommodating chamber with receiving acoustical generator and the back cavity positioned at acoustical generator side, the side that back cavity is molded over acoustical generator can be obtained
Back cavity volume as big as possible, but it is larger to also result in the space that entire sounding device occupies in the horizontal direction simultaneously, unfavorable
In the miniaturization of product.
Under above-mentioned several situations, it is limited to the volume of sounding device, it is lower with the integrated level of antenna, it is difficult to adaptation collection
At the more demanding electronic product of degree, and it is difficult to take into account miniaturization and demand of both excellent acoustical behavior.
Utility model content
The utility model embodiment provides a kind of sounding device and electronic equipment, while guaranteeing acoustical behavior not only
The volume of sounding device can be reduced, moreover it is possible to antenna integrated to improve integrated level on small size sounding device.
The utility model additionally provides a kind of sounding device, including vibrational system, magnetic circuit system, shell and antenna；It is described
Vibrational system is installed on the first end of the shell；The magnetic circuit system is located at the lower section of the vibrational system and is fixed on described
In shell, the magnetic circuit system is equipped with rear acoustic aperture；The shell includes the corresponding vibrational system and the magnetic circuit system
First part, and the second part beyond the magnetic circuit system bottom surface is integrally extended downwardly by the first part；The shell
The second end of body be equipped with lower cover plate, the second part of the shell, the magnetic circuit system bottom surface and the lower cover plate between shape
The back cavity of acoustic aperture connection after described in Cheng Youyu；The antenna is arranged on the shell and/or the lower cover plate.
Optionally, the antenna is arranged on the second part and/or the lower cover plate.
Optionally, the antenna includes double-end feed point and the main part that is connected with the double-end feed point；Described two
End feeding point and the main part being connected with the double-end feed point are arranged on the lateral wall of the second part.
Optionally, the antenna includes laser direct forming antenna, flexible printed circuit board antenna or metal antenna.
Optionally, the vibrational system includes vibrating diaphragm and the voice coil that is fixed below the vibrating diaphragm, and the vibrating diaphragm is fixed on
On the first end end face；The magnetic circuit system includes conductive magnetic yoke and center magnetic path portion and the side for being installed on conductive magnetic yoke upper surface
Magnetic circuit part；The magnetic gap for accommodating the voice coil is formed between the center magnetic path portion and side magnetic circuit part；The center magnetic
At least one of road part and the side magnetic circuit part are equipped with permanent magnet.
Optionally, the outside of the side magnetic circuit part and the inner wall of the shell recline setting.
Optionally, the side of the conductive magnetic yoke and the inner wall of the shell are connected together, and the periphery of the conductive magnetic yoke with
Gluing seals between the inner wall of the shell.
Optionally, the conductive magnetic yoke is rectangle, the corner positions of the conductive magnetic yoke be equipped with the magnetic gap and it is described after
Acoustic aperture after the first of chamber connection.
Optionally, the center magnetic path portion includes centring magnet and the center magnetic conduction set on the centring magnet top surface
Plate；Positioned at the center magnetic path portion, the magnetic circuit system, which is equipped with, sequentially passes through the conductive magnetic yoke and the centring magnet
The a part of through-hole as the back cavity, the center magnetic conductive board are equipped with acoustic aperture after second to be connected with the through-hole.
Optionally, the open volume of the centring magnet relative to centring magnet volume before non-aperture ratio be less than etc.
In the range of 35%.
Optionally, the shell is rectangular configuration.
Optionally, sound-absorbing material is filled in the back cavity；Through hole, the sound-absorbing material are offered on the lower cover plate
It is filling into the back cavity from the through hole；
Optionally, it is covered with the first breathable barrier at the rear acoustic aperture, is passed through for keeping out the sound-absorbing material；Institute
State and be also covered with the second breathable barrier at through hole, second breathable barrier by the sound-absorbing material and external environment every
From.
Optionally, the shell is an integral molding structure with the lower cover plate.
The utility model additionally provides a kind of electronic equipment, including mainboard and sounding device described above；The antenna
It is electrically connected with the mainboard.
In technical solution provided by the embodiment of the utility model, shell includes that be wholely set be more than magnetic circuit system bottom surface
Second part forms back cavity between the lower cover plate of the second end setting of the second part of shell, magnetic circuit system and shell, compared to
The prior art, the utility model do not need additionally to configure the body structure for forming back cavity, help to realize the miniaturization of product, and
And the volume and back cavity volume of magnetic circuit system can be taken into account on the basis of miniaturization, and then guarantee acoustical behavior.In addition, passing through
The sounding device of small size is integrated with antenna, integrated level can be improved.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Detailed description of the invention
The attached drawing for constituting part of specification describes the embodiments of the present invention, and uses together with the description
In explanation the principles of the present invention.
Fig. 1 is the sectional view for the sounding device that an embodiment of the present invention provides；
Fig. 2 is the structural representation of a specific implementation of conductive magnetic yoke in the sounding device of an embodiment of the present invention offer
Figure；
Fig. 3 is the structural schematic diagram for the sounding device that an embodiment of the present invention provides；
Fig. 4 is the explosive view for the sounding device that an embodiment of the present invention provides；
Fig. 5 is the another explosive view for the sounding device that an embodiment of the present invention provides；
Fig. 6 is the another structural schematic diagram for the sounding device that an embodiment of the present invention provides.
Specific embodiment
The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should also be noted that unless another
It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never
As to the utility model and its application or any restrictions used.
Technology and equipment known to person of ordinary skill in the relevant may be not discussed in detail, but in appropriate situation
Under, the technology and equipment should be considered as part of specification.In shown here and discussion all examples, any tool
Body value should be construed as merely illustratively, not as limitation.Therefore, other examples of exemplary embodiment can have
There is different values.It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain item
It is defined in an attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 show a kind of structure for sounding device of an embodiment of the present invention offer
Schematic diagram.As shown in Figure 1, including vibrational system 20, magnetic circuit system 30, shell 10 and antenna 5；Vibrational system 20 is installed on described
The first end of shell 10；The magnetic circuit system 30 is located at the lower section of the vibrational system 20 and is fixed in the shell 10, institute
Magnetic circuit system 30 is stated equipped with rear acoustic aperture 40；The shell 10 includes the corresponding vibrational system 20 and the magnetic circuit system 30
First part, and the second part beyond 30 bottom surface of magnetic circuit system is integrally extended downwardly by the first part；It is described
The second end of shell 10 is equipped with lower cover plate 50, the second part of the shell 10, the magnetic circuit system 30 bottom surface and it is described under
The back cavity 60 being connected to the rear acoustic aperture 40 is formed between cover board 50；The antenna 5 setting is in the shell 10 and/or described
On lower cover plate 50.
In technical solution provided by the embodiment of the utility model, shell includes that be wholely set be more than magnetic circuit system bottom surface
Second part forms back cavity between the lower cover plate of the second end setting of the second part of shell, magnetic circuit system and shell, compared to
The prior art, the utility model do not need additionally to configure the body structure for forming back cavity, help to realize the miniaturization of product, and
And the volume and back cavity volume of magnetic circuit system can be taken into account on the basis of miniaturization, and then guarantee acoustical behavior.In addition, passing through
The sounding device of small size is integrated with antenna, integrated level can be improved.Signal transmitting and reception shadow in order to avoid antenna
Antenna 5 can be arranged far from the second part and/or lower cover plate 50 of voice coil (as schemed by the work for ringing the voice coil in vibrational system
Shown in 5).Specifically, antenna 5 is arranged on the lateral wall of the second part of shell 10 and/or the outer surface of lower cover plate 50.
In a kind of achievable structure, as shown in fig. 6, the antenna 5 include double-end feed point 51 and with the both ends
The connected main part of feeding point；The double-end feed point 51 and the main part being connected with the double-end feed point 51 are respectively provided with
On the lateral wall of the second part.Antenna is arranged in the multiple positions that can avoid antenna on the same shell and be located at splicing
The problems such as antenna easy fracture caused by upper, improves antenna performance and stability.The double-end feed point of antenna 5 can in electronic equipment
Setting is contacted with the elastic slice of mainboard electrical connection, by the working condition of mainboard control antenna 5.
In practical applications, antenna 5 includes but is not limited to laser direct forming (LDS, Laser-Direct-
Structuring) antenna, flexible printed circuit board (FPCB) antenna or metal antenna.If antenna 5 is LDS antenna, can pass through
Antenna pattern is activated in the outer surface of laser sounding device, then forms LDS antenna by evaporation metal；If antenna 5 is FPCB days
Antenna 5 is fixed on the outer surface of sounding device by line or metal antenna, the then mode that stickup can be used.The shape of antenna 5 can root
It is designed according to actual needs, the present invention is not especially limited this.
It should be noted that lower cover plate 50 can be plastic material or metal material.When lower cover plate 50 is metal material, it is
Avoid the short circuit of LDS antenna, can only by the setting of LDS antenna on the housing 10.Shown in fig. 6 is that LDS antenna is arranged in shell
On the lateral surface of 10 second part.
It is shown in fig. 5 be FPCB antenna or metal antenna be arranged in shell 10 second part lateral surface and lower cover plate 50
Lateral surface on.Fig. 3 and it is shown in Fig. 4 be that FPCB antenna or metal antenna are arranged on the lateral surface of shell 10.
When lower cover plate 50 is plastic material, lower cover plate 50 can be separately formed structure；Or lower cover plate 50 and shell 10
It is an integral molding structure.When lower cover plate 50 and shell 10 are an integral molding structure, antenna is arranged in first shell 10 and lower cover
When on plate 50, it that is to say and antenna is arranged on the same shell, caused by can avoid antenna on multiple positions of splicing
The problems such as antenna easy fracture, improves antenna performance and stability.
In a specific structure, vibrational system 20 includes vibrating diaphragm 21 and the voice coil 22 for being fixed on 21 lower section of vibrating diaphragm, vibrating diaphragm 21
It is fixed on the first end end face.As shown in Figure 1, magnetic circuit system 30 includes conductive magnetic yoke 31 and is installed on 31 upper surface of conductive magnetic yoke
Center magnetic path portion 301 and side magnetic circuit part 302；It is formed between center magnetic path portion 301 and side magnetic circuit part 302 and accommodates sound
The magnetic gap of circle 22；At least one of center magnetic path portion 301 and side magnetic circuit part 302 are equipped with permanent magnet.In order to reduce hair
The volume of acoustic device, the setting as shown in Figure 1, outside of side magnetic circuit part 302 can recline with the inner wall of shell 10.In addition, magnetic conduction
Yoke 31 can be connect with shell 10 in several ways, for example, in a kind of achievable technical solution the side of conductive magnetic yoke 31 with
The inner wall of shell 10 is connected together, and gluing seals between the periphery of the conductive magnetic yoke 31 and the inner wall of the shell 10.
Further, as shown in Fig. 2, the conductive magnetic yoke 31 is rectangle, the corner positions of the conductive magnetic yoke 31 are equipped with and institute
Acoustic aperture after stating magnetic gap is connected to the back cavity 60 first, the rear acoustic aperture 40 includes acoustic aperture after first.Meanwhile the center
Magnetic circuit part 301 includes centring magnet 32 and the center magnetic conductive board 33 set on 32 top surface of centring magnet；Positioned at the center
Magnetic circuit part 301, the magnetic circuit system 30 are equipped with the through-hole work for sequentially passing through the conductive magnetic yoke 31 and the centring magnet 32
For a part of the back cavity 60, the center magnetic conductive board 33 is equipped with acoustic aperture after second to be connected with the through-hole, described
Acoustic aperture 40 includes acoustic aperture after second afterwards.
Because acoustic aperture 40 can not reach optimal and 60 air circulation effect of back cavity after four of 31 four corners of conductive magnetic yoke, therefore
The present embodiment opens up the rear acoustic aperture 40 through magnetic circuit system 30 in center magnetic path portion 301, as acoustic aperture after at the 5th.5th
Acoustic aperture can not only play the role of dilatation back cavity 60 behind place, moreover it is possible to solve because of miniaturization device vibrational system and magnetic circuit spacing
Small, the acoustic resistance of vibration can become larger so that the problem of stability of vibration system is deteriorated.You need to add is that being filled with when in back cavity 60
When sound-absorbing material, only it is difficult to reach best capacity enlargement effect by acoustic aperture after four first of 31 four corners of conductive magnetic yoke, this is because
After four of four corners sound-absorbing material of the acoustic aperture apart from conductive magnetic yoke and the through hole of centring magnet farther out, therefore, in center magnetic conduction
Acoustic aperture can efficiently use the sound-absorbing material of the through hole of conductive magnetic yoke and centring magnet after opening up second on plate 33, reach best dilatation
Effect.
It needs exist for supplement: 32 central area of centring magnet (being measured to the BL of acoustical generator by drive system in acoustical generator
One parameter of intensity) contribution is less than borderline region, and it therefore, will be in centring magnet 32 in the case where 60 volume of back cavity is limited
Heart district domain hollows out, and to increase back cavity volume, facilitates the performance for promoting product.Although the region that centring magnet 32 hollows out is to magnetic circuit
The influence of the BL value of system 30 is small, but how many or in the presence of influence.If the area of knockout of centring magnet 32 is too big, right
The influence of the BL value of magnetic circuit system 30 cannot be ignored.Area of knockout is excessive, and the BL value of magnetic circuit system 30 will be smaller, produces
The performance of product will be lower.Therefore, it is necessary to find a range of balance, so that centring magnet 32 hollows out increased 60 volume of back cavity
Magnetic circuit system BL value is greater than to the lifting capacity of properties of product and reduces the amount for causing properties of product to reduce, to realize to product
The optimization of energy.By emulation learn, when the volume that centring magnet 32 hollows out account for centring magnet original volume 35% within when, product
Performance gets a promotion.When the volume that centring magnet 32 hollows out is more than this range, the BL value of magnetic circuit system 30 is strongly reduced.This
When 60 space of back cavity increase the promotion effect of performance is reduced not as good as magnetic circuit system BL value caused by properties of product reducing effect, it is comprehensive
Conjunction shows as properties of product reduction.Therefore, in above-mentioned technical proposal provided by the invention, the open volume of centring magnet should expire
Foot: the open volume of centring magnet 32 is less than or equal to 35% relative to the ratio of 32 volume of centring magnet before aperture, further
Can control in the range of 5%-30%.
Further, as shown in Figure 1, the inner wall of the first end of the shell is equipped with the center position extension towards shell
Convex edge 101, the top edge of the magnetic circuit system 30 abuts and is fixed on the lower surface of the convex edge 101.
Specifically, as shown in Figure 1, the first end of the shell 10 is hatch frame, the first end opening of shell 10 has
There is the first step end face 11 of recess, first step end face 11 has the bottom surface 111 and side 112 for installing vibrating diaphragm 21.Ginseng
According to shown in Fig. 1 and Fig. 3, the top of vibrating diaphragm 21 is additionally provided with the upper cover plate 70 of installation on the housing 10, and the edge of upper cover plate 70 is located at
The inside of the side 112 of first step end face 11.Upper cover plate 70 can be by being ultrasonically welded at the first end of the shell 10.
Fig. 3 and Fig. 4, Fig. 5, Fig. 6 show a kind of way of realization of sounding device provided by the embodiment of the utility model
Outer profile schematic diagram.As shown in Figure 4 and Figure 5, the shell 10 of sounding device provided in this embodiment can be rectangular configuration.Example
Such as, using the sounding device of technical solution provided by the embodiment of the utility model, can be prepared into planar dimension is 12*11.5mm's
Size, then the height gauge for reducing sounding device is realized by way of rear acoustic aperture of the setting with capacity enlargement effect on magnetic circuit system
Very little purpose.
Further, as shown in Figure 1, being filled with sound-absorbing material in the back cavity 60；It offers and passes through on the lower cover plate 50
Through-hole 505, the sound-absorbing material are filling into the back cavity 60 from the through hole 505.Sound-absorbing material can be acoustical cotton
Material, zeolitic material, absorbent charcoal material or other material with capacity enlargement effect, in this patent without limitation.
Further, it is covered with the first breathable barrier 80 at the rear acoustic aperture 40, for keeping out the sound-absorbing material
It passes through；It is also covered at the through hole 505 second breathable barrier (not shown), second breathable barrier is by the suction
Sound material is isolated with external environment.
Wherein, the first breathable barrier 80 and the second breathable barrier can be damping screen made of waterproof ventilative material.
Sound-absorbing material is filled in back cavity can the volume for further increasing back cavity, facilitate the performance for promoting sounding device.
When sound-absorbing material is sound-absorbing particle, as a kind of specific embodiment, which can be zeolite
Grain comprising multiple zeolite particles, the silica alumina ratios of each zeolite particles can with > 200 perhaps < 200 or for without
The zeolite particles of aluminium.
In actual implementation, the second end of the shell 10 is hatch frame, and lower cover plate 50 can be used metal material and be made.
Metal material can be done thinner, and occupied space is smaller.Lower cover plate 50 can be tabular；Or lower cover plate 50 is with bottom wall
501 and side wall 502 bowl structure (as shown in Figure 1).Lower cover plate 50 be metal material and in bowl structure embodiment in,
The intensity with higher of metal lower cover plate 50 of bowl structure, and occupy little space, and the presence of side wall 502, form one
Partial rear cavity space, therefore the height of shell 10 can reduce avoids excessively high plastic casing from needing to do wall thickness and protect greatly
The problem of demonstrate,proving overall structural strength and then will increase occupied space is more advantageous to and realizes product miniaturization.
In the sounding device provided in this embodiment, lower cover plate 50 can be used the following two kinds mode and realize and shell 10
The connection of second end opening.Certainly, the embodiment of the present invention is not limited only to following several connection types.
Mode one, as shown in Figure 1, the inside of the end face of the second end opening of shell 10 has the second step end face of recess
12, second step end face 12 has the top surface 121 and side 122 for installing lower cover plate 50.Lower cover plate 50 is that tabular (is not schemed
Show), the edge of lower cover plate 50 is equipped with the recessed portion being recessed towards 60 direction of back cavity, and recessed portion is connected to the top of second step end face
Face 121 and the first glue groove is formed between the side of second step end face 12 122, gluing is by lower cover in the first glue groove
Plate 50 is fixed on the housing 10.Alternatively, as shown in Figure 1, lower cover plate 50 be the bowl structure with bottom wall 501 and side wall 502, under
The end of the side wall 502 of cover board 50 is bent outward is equipped with installation edge 503, and installation edge 503 is connected to second step end face
12 top surface 121 and the second glue groove 504 is formed between the side of second step end face 12 122, in the second glue groove 504
Interior gluing is fixed on the housing 10 by lower cover plate 50.
Mode two, the perimeter injection moulding of lower cover plate 50 have plastic edge (not shown), the second end of plastic edge and shell 10
Opening ultrasonic welding.
Further embodiment of this invention additionally provides a kind of electronic equipment.The electronic equipment, including mainboard and any of the above-described reality
Apply the sounding device in example；Antenna 5 is electrically connected with mainboard.Specifically, the bullet that the double-end feed point 51 of antenna 5 is electrically connected with mainboard
Piece contact setting.
Above-mentioned electronic product includes but is not limited to virtual unit, palm PC etc..
Although being described in detail by some specific embodiments of the example to the utility model, this field
It is to be understood by the skilled artisans that above example merely to be illustrated, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments
It modifies.The scope of the utility model is defined by the following claims.
Claims (15)
1. a kind of sounding device, which is characterized in that including vibrational system, magnetic circuit system, shell and antenna；
The vibrational system is installed on the first end of the shell；
The magnetic circuit system is located at the lower section of the vibrational system and is fixed in the shell, after the magnetic circuit system is equipped with
Acoustic aperture；
The shell includes the first part of the corresponding vibrational system and the magnetic circuit system, and by the first part one
Body extends downwardly the second part beyond the magnetic circuit system bottom surface；
The second end of the shell be equipped with lower cover plate, the second part of the shell, the magnetic circuit system bottom surface and it is described under
The back cavity being connected to the rear acoustic aperture is formed between cover board；
The antenna is arranged on the shell and/or the lower cover plate.
2. a kind of sounding device according to claim 1, which is characterized in that the antenna is arranged in the second part
And/or on the lower cover plate.
3. a kind of sounding device according to claim 1, which is characterized in that the antenna include double-end feed point and with institute
State the connected main part of double-end feed point；
The double-end feed point and the main part being connected with the double-end feed point are arranged at the outside of the second part
On wall.
4. sounding device according to any one of claim 1 to 3, which is characterized in that the antenna includes that laser is direct
Contoured beam antenna, flexible printed circuit board antenna or metal antenna.
5. a kind of sounding device according to any one of claim 1 to 3, which is characterized in that the vibrational system includes
Vibrating diaphragm and the voice coil being fixed below the vibrating diaphragm, the vibrating diaphragm are fixed on the first end end face；
The magnetic circuit system includes conductive magnetic yoke and the center magnetic path portion and side magnetic circuit part for being installed on the conductive magnetic yoke upper surface；
The magnetic gap for accommodating the voice coil is formed between the center magnetic path portion and side magnetic circuit part；
At least one of the center magnetic path portion and the side magnetic circuit part are equipped with permanent magnet.
6. a kind of sounding device according to claim 5, which is characterized in that the outside of the side magnetic circuit part and the shell
The inner wall of body reclines setting.
7. a kind of sounding device according to claim 5, which is characterized in that the side of the conductive magnetic yoke and the shell
Inner wall is connected together, and gluing seals between the periphery of the conductive magnetic yoke and the inner wall of the shell.
8. a kind of sounding device according to claim 5, which is characterized in that the conductive magnetic yoke is rectangle, the conductive magnetic yoke
Corner positions be equipped be connected to the magnetic gap and the back cavity first after acoustic aperture.
9. a kind of sounding device according to claim 5, which is characterized in that the center magnetic path portion includes centring magnet
With the center magnetic conductive board for being set to the centring magnet top surface；
Positioned at the center magnetic path portion, the magnetic circuit system, which is equipped with, sequentially passes through the conductive magnetic yoke and the centring magnet
The a part of through-hole as the back cavity, the center magnetic conductive board are equipped with acoustic aperture after second to be connected with the through-hole.
10. a kind of sounding device according to claim 9, which is characterized in that the open volume of the centring magnet is opposite
The ratio of centring magnet volume is in the range of being less than or equal to 35% before non-aperture.
11. a kind of sounding device according to any one of claim 1 to 3, which is characterized in that the shell is rectangle knot
Structure.
12. a kind of sounding device according to any one of claim 1 to 3, which is characterized in that be filled in the back cavity
Sound-absorbing material；
Offer through hole on the lower cover plate, the sound-absorbing material is filling into the back cavity from the through hole.
13. a kind of sounding device according to claim 12, which is characterized in that be covered with first thoroughly at the rear acoustic aperture
Air bound off member is passed through for keeping out the sound-absorbing material；
It is also covered with the second breathable barrier at the through hole, second breathable barrier is by the sound-absorbing material and external
It is environmentally isolated.
14. a kind of sounding device according to any one of claim 1 to 3, which is characterized in that the shell and it is described under
Cover board is an integral molding structure.
15. a kind of electronic equipment, which is characterized in that filled including sounding described in any one of mainboard and the claims 1-14
It sets；
The antenna is electrically connected with the mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820613224.3U CN208285533U (en) | 2018-04-26 | 2018-04-26 | Sounding device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820613224.3U CN208285533U (en) | 2018-04-26 | 2018-04-26 | Sounding device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208285533U true CN208285533U (en) | 2018-12-25 |
Family
ID=64751005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820613224.3U Active CN208285533U (en) | 2018-04-26 | 2018-04-26 | Sounding device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208285533U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020147542A1 (en) * | 2019-01-16 | 2020-07-23 | 歌尔股份有限公司 | Sound producing device and earphone |
| CN111970590A (en) * | 2020-09-29 | 2020-11-20 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker box and terminal equipment |
| WO2021068297A1 (en) * | 2019-10-10 | 2021-04-15 | 瑞声声学科技(深圳)有限公司 | Sound generating device |
| WO2022006951A1 (en) * | 2020-07-09 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker enclosure |
-
2018
- 2018-04-26 CN CN201820613224.3U patent/CN208285533U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020147542A1 (en) * | 2019-01-16 | 2020-07-23 | 歌尔股份有限公司 | Sound producing device and earphone |
| WO2021068297A1 (en) * | 2019-10-10 | 2021-04-15 | 瑞声声学科技(深圳)有限公司 | Sound generating device |
| WO2022006951A1 (en) * | 2020-07-09 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker enclosure |
| CN111970590A (en) * | 2020-09-29 | 2020-11-20 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker box and terminal equipment |
| CN111970590B (en) * | 2020-09-29 | 2022-07-22 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker box and terminal equipment |
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