CN208258057U - Loudspeaker and electronic product - Google Patents
Loudspeaker and electronic product Download PDFInfo
- Publication number
- CN208258057U CN208258057U CN201820639547.XU CN201820639547U CN208258057U CN 208258057 U CN208258057 U CN 208258057U CN 201820639547 U CN201820639547 U CN 201820639547U CN 208258057 U CN208258057 U CN 208258057U
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- loudspeaker
- metal film
- film portion
- circle section
- magnetic circuit
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Abstract
The utility model belongs to technical field of electronic products more particularly to a kind of loudspeaker and electronic product.Loudspeaker includes magnetic circuit system, vibrational system and loudspeaker support, loudspeaker support is equipped with installation cavity, magnetic circuit system and vibrational system are mounted in installation cavity, vibrational system includes metal film portion and circular membrane portion, metal film portion include protrusion top dome and be integrally formed and to away from top dome protrusion direction extend circle section, wound around coil is arranged in circle section, circle section is placed in magnetic circuit system.The outer peripheral edge in metal film portion is integrally formed with a circle section, and the circle section is placed in the magnetic circuit system of loudspeaker, wound around coil is wound in the circle section, so, constitute the voice coil of loudspeaker, do not need to carry out assembly and connection by other techniques between vibrating diaphragm and voice coil, will not because voice coil and vibrating diaphragm assemble it is not in place due to influence the quality of loudspeaker, improve the overall performance of loudspeaker.
Description
Technical field
The utility model belongs to technical field of electronic products more particularly to a kind of loudspeaker and electronic product.
Background technique
Loudspeaker is a kind of very common electro-acoustic transducer device, electric signal can be transformed into acoustical signal, is widely applied
In on the electronic equipment and electronic device that sound equipment, mobile phone, computer, TV etc. have audio playback capability, have become people day
Often a part indispensable in life.
As audio-frequence player device constantly updates, requirement of the people to its sound quality is also increasingly stringenter.Loudspeaker
Vibrating diaphragm and voice coil be loudspeaker vibration sounding main component.The two building blocks of market upper speaker are commonly designed
At split type structure, that is, first uses enameled wire winding to produce the voice coil of tubular when making, then voice coil is pasted again and is fixed
On the good vibrating diaphragm of pre-production.Although this split type structure can be realized the production and assembling of voice coil and vibrating diaphragm,
It is that, since the enamel-cover linear diameter that voice coil uses is smaller, the area contacted both when being bonded with vibrating diaphragm is smaller, it is difficult to realize voice coil
It with the firm assembly and connection of vibrating diaphragm, also will appear obscission after assembling, influence the assembling quality of speaker product, reduce and raise
The production efficiency of sound device.
Utility model content
The purpose of this utility model is to provide a kind of loudspeaker and electronic products, it is intended to solve loudspeaker in the prior art
Split type structure vibrating diaphragm and voice coil there is technical issues that assemble that difficulty is big, assembling quality.
A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: loudspeaker, including magnetic circuit system, vibration
Dynamic system and loudspeaker support, loudspeaker support are equipped with installation cavity, and it is empty that magnetic circuit system and vibrational system are mounted on installation
Intracavitary, vibrational system includes the metal film portion of the hat shape in installation cavity and is adhered to metal film portion and is overlapped in loudspeaker branch
The circular membrane portion at frame edge, metal film portion include the top dome of protrusion and are integrally formed and extend to the protrusion direction away from top dome
Circle section is arranged with wound around coil in circle section, and circle section is placed in magnetic circuit system.
Further, circular membrane portion is domed and identical as the protrusion direction of the top dome in metal film portion.
Further, the maximum height that circular membrane portion arches upward is less than the maximum height of the protrusion of top dome.
Further, metal film portion with a thickness of 6 μm~50 μm or 60 μm~120 μm.
Further, metal film portion is by aluminum metallic material, aluminum alloy materials, beryllium metal material, titanium metal material, titanium alloy
Material, pure magnesium metal material or magnesium alloy materials are made.
Further, wound around coil is fine enamel-cover wound around coil.
Further, fine enamel-cover wound around coil includes any one in copper wire, copper-clad aluminum conductor or aluminum steel or any two
Kind or more.
Further, circular membrane portion is made of polymer composite.
Further, loudspeaker support includes frame and U glasss, and frame and U glasss, which are mutually fastened and connected and enclose jointly, to be set to be formed
Installation cavity, the outer peripheral edge in circular membrane portion and the inner peripheral of frame are tightly connected.
The utility model has the beneficial effects that the vibrational system of the utility model loudspeaker includes metal film portion, metal film portion
Outer peripheral edge integrally formed with a circle section, and the circle section is placed in the magnetic circuit system of loudspeaker, is wound in the circle section
There is wound around coil, in this way, the voice coil of loudspeaker is constituted, even if the voice coil of loudspeaker and vibrating diaphragm are integrally formed, voice coil and vibration
It does not need to carry out assembly and connection by other any packaging technologies again between film, in this way, not only reasonably simplifying voice coil
It and is not in because loudspeaker quality cannot protect caused by the assembling of voice coil and vibrating diaphragm is not in place with the Joining Technology of vibrating diaphragm
The problem of barrier, it can be ensured that voice coil is not separated with vibrating diaphragm；Meanwhile voice coil and vibrating diaphragm being integrally formed and designed, effectively increase vibration
The rigidity of dynamic system, reduces high frequency diaphagras, improves the smoothness of curve, the case where guaranteeing pliable and suitable damping
Effectively extended down the high frequency of loudspeaker, reduces the distortion of loudspeaker；Also, when the metal film portion of vibrating diaphragm and circle section one
After body machine-shaping, wound around coil need to be only set around in circle section, so that it may guarantee the proper engagement work of voice coil and vibrating diaphragm, no
The vibration characteristics of vibrating diaphragm and the normal work of loudspeaker can be had an impact, there is stronger practicability.
The utility model another solution is that a kind of electronic product, the electronic product include above-mentioned loudspeaker.
The electronic product of the utility model, due to using above-mentioned loudspeaker, production and processing technology are more simple, mention
The high production efficiency of product；And inside loudspeakers structure assembling failure will not occur and cause speaker performance unstable
The case where, the audio broadcast performance of electronic product integrally gets better protection and is promoted, and user's use is more comfortable.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the explosive view of loudspeaker provided by the embodiment of the utility model；
Fig. 2 is the Section View of the line A-A along Fig. 1；
Fig. 3 is the structural schematic diagram of the vibrational system of loudspeaker provided by the embodiment of the utility model；
Fig. 4 is the Section View of the line B-B along Fig. 3.
Wherein, each appended drawing reference in figure:
10-magnetic circuit system 11-magnetic part, 12-magnet
20-vibrational system 21-vibrating diaphragm, 22-voice coils
30-31-U of loudspeaker support cup, 32-frame
40-improvement of damping system the 42-the second damping pieces of the 41-the first damping piece
50-circuit board the 121-the second magnetic gap of the 111-the first magnetic gap
211-212-circular membrane portion of metal film portion, 222-wound around coil
311-through-hole 2111-top dome, 2112-circle sections.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining the description of attached drawing 1~4 is exemplary, it is intended to for explaining the utility model, and should not be understood as practical to this
Novel limitation.
In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of utility model.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
As shown in figures 1-4, the utility model provides a kind of loudspeaker, including magnetic circuit system 10, vibrational system 20 and
Loudspeaker support 30, loudspeaker support 30 are equipped with installation cavity, and magnetic circuit system 10 and vibrational system 20 are mounted on installation cavity
Interior, vibrational system 10 includes the metal film portion 211 of the hat shape in the installation cavity and is adhered to metal film portion 211 and is overlapped in and raise
The circular membrane portion 212 of sound device bracket edge, metal film portion 211 include the top dome 2111 of protrusion with integrated molding and to away from top dome
The circle section 2112 that extends of protrusion direction, be arranged with wound around coil 222 in circle section 2112, circle section 2112 is placed in magnetic circuit system
In system 10.
Specifically, as depicted in figs. 1 and 2, the circle section 2112 of the present embodiment is the outer of the top dome 2111 in metal film portion 211
The bottom of periphery towards installation cavity turns down and continues to extend and be formed, i.e., circle section 2112 is diameter and 2111 outer peripheral edge of top dome
The identical metal ring circle section of diameter, and the vibrating diaphragm 21 of the present embodiment includes metal film portion 211 and circular membrane portion 212.
The vibrational system 20 of the loudspeaker of the utility model embodiment includes metal film portion 211, the periphery in metal film portion 211
Edge is integrally formed with a circle section 2112, and the circle section 2112 is placed in the magnetic circuit system 10 of loudspeaker, the circle section
Wound around coil 222 is wound on 2112, in this way, the voice coil 22 of loudspeaker is constituted, even if the voice coil 22 and vibrating diaphragm of loudspeaker
21 are integrally formed, and do not need carrying out assembly and connection by other any packaging technologies between voice coil 22 and vibrating diaphragm 21, letter
The Joining Technology for having changed voice coil 22 Yu vibrating diaphragm 21, there is no because voice coil 22 and vibrating diaphragm 21 assemble it is not in place caused by loudspeaker product
The problem of matter cannot ensure, it can be ensured that voice coil 22 is not separated with vibrating diaphragm 21, and when vibrating diaphragm 21 vibrates, voice coil 22 and vibrating diaphragm
The Oscillation Amplitude that 21 joint generates is all the same, is more conducive to promoting the overall performance of loudspeaker；Meanwhile integrated molding is set
The voice coil 22 and vibrating diaphragm 21 of meter effectively increase the rigidity of vibrational system 20, reduce high frequency diaphagras, improve curve
Smoothness reduces the mistake of loudspeaker in the high frequency of loudspeaker that guarantees effectively to have extended in the case where pliable and suitable damping
Very；Also, after the circle section 2112 of voice coil 22 and vibrating diaphragm 21 are integrally machined molding, only wound around coil 222 need to be set around circle
It encloses in section 2112, so that it may guarantee the proper engagement work of voice coil 22 and vibrating diaphragm 21, therefore, above-mentioned vibrating diaphragm 21 and circle section 2112
Integrally formed design method will not the normal work of vibration characteristics and loudspeaker to vibrating diaphragm 21 have an impact, have relatively strong
Practicability.
In the present embodiment, as shown in figs. 2 to 4, circular membrane portion 212 it is domed and with the top dome in metal film portion 211 2111
Protrusion direction it is identical, increase effective vibration area in circular membrane portion 212.
In the present embodiment, the height at the position of arching upward in circular membrane portion 212 is less than the lug boss of the top dome in metal film portion 211
The maximum height of position reduces cost of manufacture to save the making material in circular membrane portion 212.
In the present embodiment, the thickness in metal film portion 211 is preferably 6 μm~50 μm or 60 μm~120 μm, different-thickness
Metal film portion 211 it is corresponding there is different rigids, as its rigid water hammer of the increase of 211 thickness of metal film portion increases,
Therefore, when designing vibrating diaphragm 21 can the rigid according to required for vibrating diaphragm 21 thickness in metal film portion 211 is selected,
Herein very specific limitation is not done to its thickness.It is specifically as follows 6 μm, 10 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm,
80 μm, 90 μm, 100 μm and 120 μm etc..
In the present embodiment, metal film portion 211 is preferably closed using aluminum metallic material, aluminum alloy materials, beryllium metal material, beryllium
Golden material, titanium metal material, titanium alloy material, pure magnesium metal material or magnesium alloy materials are made.Above-mentioned metal material has
There is the characteristic that rigidity is relatively strong, quality is lighter, raising 21 rigidity of vibrating diaphragm and temperature tolerance can be played, reduce and shake by making vibrating diaphragm 21 with it
The segmentation of film 21 distortion, the effect of 21 bandwidth of extension vibrating diaphragm.
Also, the circle section 2112 due to serving as speech coil framework and metal film portion 211, which are integrally formed, to be designed, circle
Section 2112 is identical as the making material in metal film portion 211, i.e., circle section 2112 is same it is also preferred that using aluminum metallic material, aluminium alloy
Material, beryllium metal material, beryllium alloy material, titanium metal material, titanium alloy material, pure magnesium metal material or magnesium alloy materials system
At.Using the traditional paper of above-mentioned metal material instead, TIL glass fibre and polyimide film material (KAPPTON) etc.
The speech coil framework of material production, since above-mentioned metal material has the rigidity better than traditional fabrication material, one side
It can guarantee that loudspeaker still issues good beautiful sound under high-power big kinetic energy range；And on the other hand, since loudspeaker is sent out
The electromagnetism power drive voice coil 22 and vibrating diaphragm 21 that voice coil 22 generates when sound vibrate together, therefore the skeleton of voice coil 22 is lighter, vibrational system
20 total weight is lighter, and the phonation efficiency of loudspeaker is higher, and sound is removed more thoroughly, and sound quality is better, and above-mentioned metal material is close
Spend relatively small, light-weight, the weight of manufactured speech coil framework is also relatively light, therefore, can also subtract to a certain extent
The total weight of small speaker vibration system 20, improves the phonation efficiency of loudspeaker；Further, since voice coil bone made of metal material
Frame also has preferable temperature tolerance, smaller by environment temperature and effects of humidity change, is less prone to deformation.
In the present embodiment, wound around coil 222 is fine enamel-cover wound around coil.Voice coil 22 in the present embodiment is band skeleton
Fine enameled wire wound form voice coil 22, i.e., being equably wrapped in fine enameled wire in above-mentioned circle section 2112 just can make up
One complete voice coil 22.
In the present embodiment, fine enamel-cover wound around coil includes any one in copper wire, copper-clad aluminum conductor or aluminum steel or two
Kind or more, user can select according to the actual situation；And the cross sectional shape of above-mentioned wire rod can be round or side
Shape, herein without limitation.
In the present embodiment, circular membrane portion 212 is preferably made of polymer composite, wherein macromolecule composite wood
Material preferably comprising PET/PEN/PEEK/PEI/PAR/PEI, resinous material and PU material etc. macromolecule composite wood
Material.When it is connected and fixed between metal film portion 211 and loudspeaker support 30, since the rigidity of flexible material compares metal material
Want weak, and quality is also more soft, pliable more preferable, therefore it is easier stress and generates vibration, so as to be easier to vibrating diaphragm 21
In vibration sounding, further, since the damping characteristic of flexible material is also stronger than metal material, therefore it also can effectively increase vibrating diaphragm
21 collectivity damping property extends the bandwidth of vibrating diaphragm 21, mentions to reduce harmonic distortion of the vibrating diaphragm 21 of the present embodiment in high frequency
The overall performance of high vibrating diaphragm 21.
Specifically, between the inner peripheral in above-mentioned circular membrane portion 212 and the outer peripheral edge in metal film portion 211 and circular membrane
The outer peripheral edge in portion 212 can be fixedly connected with loudspeaker support 30 by the way of glue molding bonded, certainly, protected
Demonstrate,prove three stable connection it is reliable under the premise of, can also be fixedly connected with mode using others and be attached, when design can
Not do specific restriction herein according to having situation to be designed selection.
In the present embodiment, as depicted in figs. 1 and 2, loudspeaker support 30 includes frame 32 and U cup 31, frame 32 and U glasss
31, which are mutually fastened and connected and enclose jointly, sets to form installation cavity, and the outer peripheral edge in circular membrane portion 212 and the inner peripheral of frame 32 seal
Connection.
In the present embodiment, as depicted in figs. 1 and 2, magnetic circuit system 10 includes the magnetic part 11 being sequentially stacked in U cup 31
It is located along the same line with the center of magnet 12, U cup 31, magnetic part 11 and magnet 12；The interior bottom centre of above-mentioned U cup 31
Offer through-hole 311, above-mentioned magnet 12 and magnetic part 11 are ring structure, and the annular diameters of magnet 12 and magnetic part 11
It is identical as above-mentioned 311 diameter of through-hole, when it is arranged in U cup 31, the inner ring difference of above-mentioned magnet 12 and magnetic part 11
The through-hole 311 for being directed at 31 bottom of U cup is arranged, to achieve positioning；And magnet 12, magnetic part 11 are interior with U cup 31
Sidewall spacers setting, forms the inside of the first magnetic gap 111, magnetic part 11 and U cup 31 between magnet 12 and the inner sidewall of U cup 31
Form the second magnetic gap 121 between wall, and the first magnetic gap 111 and the second magnetic gap 121 are interconnected, and voice coil 22 deviates from
The other end in metal film portion 211 passes through 121 rear overhang of the second magnetic gap and is set in the first magnetic gap 111, when extraneous tone currents
When signal reaches voice coil 22, voice coil 22 cuts the first magnetic gap 111 and magnetic induction line in the second magnetic gap 121 and generates mechanical vibration
It moves to make loudspeaker vibration sounding.
Specifically, as shown in Fig. 2, above-mentioned magnetic part 11 is substantially suitable with shape, the size of magnet 12, under magnet 12
Side face paste closes the inner bottom surface for being fixed on U cup 31, and the upper surface of magnet 12 and the following face paste of magnetic part 11 are closed, and the side of magnet 12
The side consistency from top to bottom on side and magnetic part 11, so that the area being connected between the first magnetic gap 111 and the second magnetic gap 121 is most
Greatly, maximum space is provided for the formation of magnetic induction line, to improve the phonation efficiency of the present embodiment loudspeaker.
In the present embodiment, as depicted in figs. 1 and 2, loudspeaker further includes improvement of damping system 40, improvement of damping system 40
The second damping piece 42 including being covered in the first damping piece 41 and the outer bottom for being covered in U cup 31 of the outer bottom of frame 32.?
The first damping piece 41 and the second damping piece 42 is respectively set in the outer bottom of outer bottom and the U cup 31 of frame 32, to enhance vibrating diaphragm
21 damping characteristic reduces the vibration counter-force of vibrating diaphragm 21, increases the vibrating effect of vibrating diaphragm 21, avoids using vibrating diaphragm 21 because of setting gold
Sound quality deterioration caused by category film portion 211, improves the sounding effect of loudspeaker.Specifically, first damping piece 41 of the present embodiment
With the second damping piece 42 by the preferable damping material of damping capacity common in the market, paper, damping rubber and resistance are such as damped
The material of Buddhist nun's plastics etc. is made, and preferably cheap and excellent damping characteristic damping paper.
In the present embodiment, as shown in Fig. 2, loudspeaker further includes circuit board 50, circuit board 50 is fixedly connected with frame 32,
Circuit board 50 and voice coil 22 are electrically connected.The loudspeaker of the present embodiment realizes the conducting of peripheral circuits by circuit board 50,
Voice-frequency signalling current outside loudspeaker is transferred to the inside of loudspeaker by circuit board 50.
The utility model embodiment additionally provides a kind of electronic product, which includes above-mentioned loudspeaker, and should
Electronic product realizes the conducting of external circuit in above-mentioned loudspeaker by circuit board 50 above-mentioned, and the electronic product is by tone currents
Signal reaches loudspeaker, and received audio electrical signal is converted into audio voice signals to realize the normal hair of electronic product by loudspeaker
Sound.The electronic product of the present embodiment, due to using above-mentioned loudspeaker, production and processing technology are more simple, improve production
The production efficiency of product；And the feelings that inside loudspeakers structure assembling failure will not occur and cause speaker performance unstable
The audio broadcast performance of condition, electronic product integrally gets better protection and is promoted, and user's use is more comfortable.
Specifically, the electronic product of the present embodiment can be sound equipment, mobile phone, tablet computer, computer, TV etc..
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of loudspeaker, including magnetic circuit system, vibrational system and loudspeaker support, it is empty that the loudspeaker support is equipped with installation
Chamber, the magnetic circuit system and the vibrational system are mounted in the installation cavity, it is characterised in that: the vibrational system packet
It includes the metal film portion for the hat shape being located in the installation cavity and is adhered to the metal film portion and is overlapped in the loudspeaker branch
The circular membrane portion at frame edge, the metal film portion include the top dome of protrusion with being integrally formed and the protrusion side to the top dome is deviated from
To the circle section of extension, wound around coil is arranged in the circle section, the circle section is placed in the magnetic circuit system.
2. loudspeaker according to claim 1, which is characterized in that the circular membrane portion it is domed and with the metal film portion
Top dome protrusion direction it is identical.
3. loudspeaker according to claim 2, which is characterized in that the maximum height that the circular membrane portion arches upward is less than described
The maximum height of the protrusion of top dome.
4. loudspeaker according to claim 1, which is characterized in that the circular membrane portion is made of polymer composite.
5. loudspeaker according to claim 1, which is characterized in that the metal film portion with a thickness of 6 μm~50 μm or
60 μm~120 μm.
6. loudspeaker according to claim 1, which is characterized in that the metal film portion is by aluminum metallic material, aluminium alloy material
Material, beryllium metal material, beryllium alloy material, titanium metal material, titanium alloy material, pure magnesium metal material or magnesium alloy materials system
At.
7. loudspeaker according to claim 1, which is characterized in that the wound around coil is fine enamel-cover wound around coil.
8. loudspeaker according to claim 7, which is characterized in that the fine enamel-cover wound around coil includes copper wire, copper-clad
It is any one or any two or more in aluminum steel or aluminum steel.
9. loudspeaker according to claim 1, which is characterized in that the loudspeaker support includes frame and U glasss, the basin
Frame and described U glasss are mutually fastened and connected and enclose jointly and set to form the installation cavity, the outer peripheral edge in the circular membrane portion with it is described
The inner peripheral of frame is tightly connected.
10. a kind of electronic product, which is characterized in that the electronic product includes loudspeaking according to any one of claims 1 to 9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820639547.XU CN208258057U (en) | 2018-04-28 | 2018-04-28 | Loudspeaker and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820639547.XU CN208258057U (en) | 2018-04-28 | 2018-04-28 | Loudspeaker and electronic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208258057U true CN208258057U (en) | 2018-12-18 |
Family
ID=64635749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820639547.XU Active CN208258057U (en) | 2018-04-28 | 2018-04-28 | Loudspeaker and electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208258057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116980800A (en) * | 2023-09-25 | 2023-10-31 | 苏州墨觉智能电子有限公司 | Magnetic circuit assembly, bone conduction sounding device and bone conduction earphone |
-
2018
- 2018-04-28 CN CN201820639547.XU patent/CN208258057U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116980800A (en) * | 2023-09-25 | 2023-10-31 | 苏州墨觉智能电子有限公司 | Magnetic circuit assembly, bone conduction sounding device and bone conduction earphone |
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