CN207665205U - Electroconductive elastic sheet and loud speaker including the electroconductive elastic sheet - Google Patents
Electroconductive elastic sheet and loud speaker including the electroconductive elastic sheet Download PDFInfo
- Publication number
- CN207665205U CN207665205U CN201721429469.2U CN201721429469U CN207665205U CN 207665205 U CN207665205 U CN 207665205U CN 201721429469 U CN201721429469 U CN 201721429469U CN 207665205 U CN207665205 U CN 207665205U
- Authority
- CN
- China
- Prior art keywords
- elastic sheet
- electroconductive elastic
- door hanging
- voice coil
- hook
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
On the one hand the utility model discloses a kind of electroconductive elastic sheet, including base portion, elastic joint part and float portion, one end of the elastic joint part is connect with the base portion, the other end is connect with the float portion, the end of the float portion is equipped with hook, the base portion includes body part and door hanging, the door hanging is equipped with limiting slot, it is described to hang in the door hanging to be limited to the float portion, the door hanging is reversely bent to form by the end of the body part, angle between plane where plane where the door hanging and the body part is more than or equal to 0 ° and is less than or equal to 45 °, on the other hand the utility model also discloses a kind of loud speaker, the utility model can avoid the unhook phenomenon of float portion hook, enhance electroconductive elastic sheet stability, it enhances product performance.
Description
Technical field
The utility model is related to electroacoustic switch technology fields.More particularly, to a kind of electroconductive elastic sheet and including the conduction
The loud speaker of shrapnel.
Background technology
As science and technology is grown rapidly, audio frequency apparatus is widely used along with the electronic products such as mobile phone, PAD, computer, and by
Gradually it is known.People also gradually have increasingly higher demands to the audio frequency apparatus effect provisioned in electronic equipment.It raises
Sound device is a kind of device that can convert electrical energy into acoustic energy, belongs to most basic phonation unit, is widely used in mobile phone etc.
In electronic product.
Loud speaker generally includes shell and the vibrational system in shell and magnetic circuit system, and vibrational system includes combining
Vibrating diaphragm together and voice coil are further provided with the electrical connector of electrical connection voice coil and external circuit on shell, voice coil can be connected
With external circuit, external circuit, to voice coil input electric energy, makes voice coil be vibrated simultaneously under the action of magnetic circuit system by electrical connector
Drive diaphragm oscillations sounding.In the prior art, electrical connector generally use electroconductive elastic sheet, electroconductive elastic sheet generally include base portion, float
Dynamic portion and the elastic joint part for connecting base portion and float portion.Base portion is securable on shell, is electrically connected with the voice coil leads of voice coil
It connects；Float portion is equipped with contact, can be used for being electrically connected with external circuit.Wherein, be respectively equipped on float portion and base portion hook with
Door hanging, hook are hung under the action of elastic joint part elastic force in door hanging, to limit the position of float portion, prevent float portion
Hunting range is excessive to cause elastic joint part to be plastically deformed, but during electroconductive elastic sheet assembles and has enough to meet the need, may
Encounter hook, current hook is easily detached from from door hanging in stress, causes product bad, and door hanging is generally approximate vertical configuration
State, door hanging height is higher, causes the volume on electroconductive elastic sheet vertical direction larger, low space utilization.
Accordingly, it is desirable to provide a kind of electroconductive elastic sheet and the loud speaker including the electroconductive elastic sheet, prevent float portion from linking up with easy
Unhook phenomenon improves product yield.
Utility model content
One of the utility model is designed to provide a kind of electroconductive elastic sheet, prevents float portion hook from breaking off relations, improves product
Yield, another of the utility model are designed to provide a kind of loud speaker including the electroconductive elastic sheet.
In order to achieve the above objectives, the utility model uses following technical proposals：
On the one hand the utility model discloses a kind of electroconductive elastic sheet, including base portion, elastic joint part and float portion, the bullet
Property interconnecting piece one end connect with the base portion, the other end is connect with the float portion, and the end of the float portion is equipped with hook,
The base portion includes body part and door hanging, and the door hanging is equipped with limiting slot, described to hang in the door hanging with to described
Float portion is limited,
The door hanging is reversely bent to form by the end of the body part, plane where the door hanging and the body part institute
Angle between plane is more than or equal to 0 ° and is less than or equal to 45 °.Preferably, pass through arc between the door hanging and the body part
Section connection.
Preferably, plane is parallel with plane where the body part where the door hanging.
Preferably, the hook includes the first bending part and the second bending part, the bottom surface of first bending part and door hanging
It offsets for limiting the displacement on float portion vertical direction, second bending part and the side of the door hanging offset for preventing
Hook is deviate from from door hanging.
Preferably, second bending part vertically extends.
Preferably, be formed on the body part of the base portion be connected to the limiting slot for keeping away the hook
The escape groove allowed.
Preferably, the float portion is equipped with the contact for being electrically connected with external circuit.
Preferably, the electroconductive elastic sheet is integrally formed.
On the other hand the utility model also discloses a kind of loud speaker, including shell and shaking in the shell
Dynamic system and magnetic circuit system, the vibrational system include that fixed vibrating diaphragm and voice coil, the voice coil is combined to draw equipped with two voice coils
Line,
It is fixed with electroconductive elastic sheet as described above on the shell, the electroconductive elastic sheet is two, respectively with the two of voice coil
The electrical connection of voice coil leads.
Preferably, there are two conductive sheets, two voice coil leads to be led respectively with described two for injection molding in the shell
The first end of electric piece is electrically connected, and the base portion of described two electroconductive elastic sheets is solid with the welding of the second end of described two conductive sheets respectively
It is fixed.
The beneficial effects of the utility model are as follows：
The electroconductive elastic sheet of the utility model includes base portion, elastic joint part and float portion, the base portion include body part and
Door hanging, door hanging are reversely bent to form by the end of the body part, plane where the door hanging and plane where the body part
Between angle be more than or equal to 0 ° be less than or equal to 45 °.Angle between the door hanging and body part becomes smaller, and can reduce door hanging perpendicular
The upward height of histogram reduces the space hold in electroconductive elastic sheet short transverse.Preferably, when the door hanging tends to level,
Angle between door hanging and body part tends to 0 °, the reduction of the size amplitude peak of door hanging in the vertical direction.The float portion
It is equipped with hook, it is preferable that the hook may include the first bending part and the second bending part, when hanging in the door hanging,
The bottom surface of first bending part and door hanging offsets the displacement that can be limited on float portion vertical direction, second bending part and institute
State door hanging side offset can prevent hook deviate from from door hanging.At this point, hook in stress, is not easy to be detached from from door hanging, prevent
Hook, which breaks off relations, causes elastic joint part to generate plastic deformation, improves the stability and product quality of electroconductive elastic sheet structure.
Description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the schematic diagram of loud speaker in the prior art；
Fig. 2 shows the side views of loud speaker in the prior art；
Fig. 3 shows the schematic diagram of electroconductive elastic sheet in the prior art；
Fig. 4 shows the side view of electroconductive elastic sheet in the prior art；
Fig. 5 is shown according to a kind of schematic diagram of electroconductive elastic sheet specific embodiment of the utility model；
Fig. 6 is shown according to a kind of schematic diagram of electroconductive elastic sheet specific embodiment of the utility model；
Fig. 7 is shown according to a kind of side view of electroconductive elastic sheet specific embodiment of the utility model；
Reference numeral：
11, shell, 12, electroconductive elastic sheet, 121, base portion, 122, float portion, 123, elastic joint part, 124, hook, 125,
Door hanging, 126, contact；
22, electroconductive elastic sheet, 221, base portion, 222, float portion, 223, elastic joint part, the 224, first bending part, 225,
Two bending parts, 226, door hanging, 227, segmental arc, 228, limiting slot, 229, escape groove, 230, contact.
Specific implementation mode
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not limit the scope of protection of the utility model with this.
Fig. 1 shows the schematic diagram of loud speaker in the prior art, and Fig. 2 shows the side view of loud speaker in the prior art, Fig. 3 shows
The schematic diagram of electroconductive elastic sheet in technology is had, Fig. 4 shows the side view of electroconductive elastic sheet in the prior art.
In the prior art, loud speaker generally includes shell 11 and the vibrational system in shell 11 and magnetic circuit system,
The vibrational system includes combined vibrating diaphragm and voice coil, and electrical connection voice coil and outside are further provided on the shell 11
The electroconductive elastic sheet 12 of circuit, can be connected voice coil and external circuit, and external circuit, to voice coil input electric energy, makes sound by electrical connector
Circle vibrates under the action of magnetic circuit system and drives diaphragm oscillations sounding.
Existing electroconductive elastic sheet 12 generally includes base portion 121, float portion 122 and connection base portion 121 and float portion 122
Elastic joint part 123, float portion 122 are equipped with contact 126, for being electrically connected with external circuit.The base portion 121 is fixed on institute
It states in speaker housings 11, base portion 121 includes pad, can be used for being electrically connected with the voice coil leads of voice coil.Float portion 122 is equipped with
It is directed away from the hook 124 of the bending of base portion 121 relative to float portion 122, base portion 121 is equipped with relative to base portion 121 towards floating
The door hanging 125 of dynamic 122 bending of portion, the door hanging 125 are equipped with limiting slot, and hook 124 is passed through from the limiting slot of door hanging 125,
Under the action of 123 elastic-restoring force of elastic joint part, the hook 124 is positioned in the door hanging 125, to limit float portion
122 scope of activities prevents from generating plastic deformation due to elastic joint part 123 is excessive because swinging.Elastic joint part 123 provides setting
Elastic force, so as in float portion 122 contact 126 and be arranged external circuit circuit board contacts it is secured.When by external force
When, elastic joint part 123 occur elastic deformation, flexible deformation generate elastic force make the contact 126 in float portion 122 still with circuit
Plate contacts.When external force disappears, elastic force can make float portion 122 return back to initial bit amount.But in the assembling of electroconductive elastic sheet 12 and week
During turning, hook 124 may be encountered, hook 124 generates displacement, is easily detached from from door hanging 125, causes product bad,
And door hanging 125 is usually in vertical state, 125 height of door hanging is higher, occupies the space on larger vertical direction, space utilization
Rate is low.
Fig. 5 and Fig. 6 shows that, according to a kind of schematic diagram of electroconductive elastic sheet specific embodiment of the utility model, Fig. 7 shows basis
A kind of side view of electroconductive elastic sheet specific embodiment of the utility model.
Electroconductive elastic sheet 22 disclosed by the utility model includes base portion 221, elastic joint part 223 and float portion 222, the bullet
One end of property interconnecting piece 223 is connect with the base portion 221, and the other end is connect with the float portion 222.The float portion 222
End is equipped with hook, and the base portion 221 includes body part and door hanging 226, and the door hanging 226 is equipped with limiting slot 228, the extension
It is hooked in the door hanging 226 to be limited to the float portion 222.Wherein, the door hanging 226 by the body part end
Portion is reversely bent to form, and the angle between plane where 226 place plane of the door hanging and the body part is more than or equal to 0 ° small
In equal to 45 °.In the present embodiment, 226 place plane of the door hanging is parallel with plane where the body part, the door hanging 226
Angle between body part is 0 °, can reduce the height of door hanging 226 in the vertical direction, is reduced in electroconductive elastic sheet short transverse
Space hold." parallel " permission in the present embodiment is due to the deviation within the scope of caused by mismachining tolerance 5 °.
In the present embodiment, the door hanging 226 is connect by segmental arc 227 with the body part, between door hanging 226 and body part
With certain altitude to limit hook, and technology difficulty can be reduced using being bent in an arc shape.
In the present embodiment, the hook includes the first bending part 224 and the second bending part 225, when hook hangs over the extension
When on door 226, under the action of the elastic force of the elastic joint part 223, the bottom surface phase of first bending part and door hanging 226
To the displacement that can be limited on float portion vertical direction, the side of second bending part and the door hanging 226 offsets and can prevent from hanging
Hook is deviate from from door hanging 226.Horizontal door hanging 226 in this practicality example can increase the contact area with the first bending part 224, be promoted
Limit effect.At this point, hook in stress, is not easy to be detached from from door hanging 226, preventing hook from breaking off relations causes elastic joint part to generate modeling
Property deformation, improve electroconductive elastic sheet structure stability and product quality.
In the present embodiment, the first bending part 224 is bent relative to float portion 222, close to horizontal direction, and is further set
Set the second bending part 225 being folded upward at relative to first bending part 224, the second bending part 225 close to vertical direction,
For hook in stress, the second bending part 225 has certain altitude in the vertical direction, and the second bending part 225 is made to be not easy from door hanging
At 226 limiting slot 228 be detached from, improve the stability of 22 structure of electroconductive elastic sheet, improve due to electroconductive elastic sheet 22 break off relations and
The caused bad problem of product.
Preferably, the size of 225 vertical direction of the second bending part is more than the thickness of the door hanging 226.When hook blocks
When in the door hanging 226, the end of second bending part 225 is located at the top of 226 upper surface of the door hanging, can be to hang
Hook provides larger deflection yoke, and hook is made still to keep the state not broken off relations in larger displacement.
In the present embodiment, second bending part 225 extends along close to vertical direction, can make second bending part
225 vertical direction size it is as big as possible, for hook larger deflection yoke is provided.
In the present embodiment, it is formed with the escape groove 229 being connected to the limiting slot 228 on the base portion 221, prevents described
Float portion stress is touched after being subjected to displacement with body part wiping, causes to speak bad.
In the present embodiment, the float portion 222 is equipped with the contact 230 for being electrically connected with external circuit.For the ease of
It is electrically connected with external circuit board contacts, contact 230 is configured as arcuate structure.In order to improve the electric conductivity of contact 230,
It is provided with conductor layer on contact 230.Conductor layer can be, but not limited to, gold, silver, platinum, nickel either zinc can by plating or
The mode of chemical plating forms conductor layer on contact 230, and plating or chemical plating have the spy that coating is uniform, coating adhesion is strong
Point.
Preferably, the electroconductive elastic sheet 22 can be integrally formed.The material of shrapnel can be, but not limited to, stainless steel, copper closes
Gold or aluminium alloy.For the ease of processing and ensureing the stable structure of shrapnel, can electroconductive elastic sheet 22 be formed by one piece of sheet fabrication,
The processes such as, bending stamped using plank are process.In this way, each structure in shrapnel can be pre-designed on plank
It is good, then it is processed.The shrapnel processed in this way has stabilized structure, the good feature of globality.Also, it saves
Manufacturing procedure.
The present embodiment also discloses a kind of loud speaker, which includes shell and the vibration system in the shell
System and magnetic circuit system, the vibrational system include combining fixed vibrating diaphragm and voice coil, and the voice coil is equipped with two voice coil leads, institute
State and be fixed with electroconductive elastic sheet 22 as described above on shell, the electroconductive elastic sheet 22 be two, respectively with two voice coils of voice coil
Lead is electrically connected.
Preferably, loud speaker is rectangular, and the electroconductive elastic sheet 22 is securable to one long side of the loud speaker or short side
Both ends.
Preferably, two conductive sheets can be molded on the shell, two voice coil leads can be led with described two respectively
The first end of electric piece is electrically connected, and the base portion of described two electroconductive elastic sheets can be solid with the welding of the second end of described two conductive sheets respectively
It is fixed.
The vibrating diaphragm that the vibrating diaphragm may include the vibrating diaphragm central part in vibrating diaphragm center and be connect with vibrating diaphragm central part edge
Edge part.In order to increase the vibration characteristics of vibrating diaphragm, usual vibrating diaphragm central part includes body central portion and is incorporated in the ontology
The reinforcement central part on center portion surface.In order to mitigate vibrating diaphragm weight, diaphragm oscillations performance is further increased, it can be by body central portion
Central hollow out.Wherein, the hollow out edge in body central portion need to be located at the inside at fixed reinforcement central part edge in connection, protect
Card fretwork area is less than the area for the reinforcement central part being bonded with it, to ensure the air-tightness of vibrating diaphragm.The lower of the vibrating diaphragm can
Fixed voice coil, the reinforcement central part may be incorporated in body central portion close to the side of voice coil, can also be incorporated in body central
Portion deviates from the side of voice coil.Voice coil can be fixed in body central portion or the join domain in body central portion and vibrating diaphragm edge part
On, when the reinforcement central part is incorporated in body central portion close to the side of voice coil, voice coil can also be fixed on reinforcement central part
On.
The magnetic circuit system may include conductive magnetic yoke, the magnet for being fixed on conductive magnetic yoke center and leading positioned at magnet upper surface
Magnetic sheet.The conductive magnetic yoke includes flat bottom wall and the side wall that extends towards vibrational system along bottom wall edge.The side of conductive magnetic yoke
The magnetic gap for accommodating voice coil lower end is formed between wall and magnet and magnetic conductive board.In practical applications, in order to increase magnetic circuit system shape
At magnetic field intensity, magnetic circuit system can also be used conductive magnetic yoke centrally disposed magnet and magnetic conductive board formed center magnetic path, leading
Multiple side magnet are arranged in the edge of yoke, and in the magnetic conductive board in the setting of the upper surface of magnet, side magnetic circuit are formed, at center
The magnetic gap for accommodating voice coil is formed between magnetic circuit and side magnetic circuit.Conductive magnetic yoke is generally rectangular, and side magnet may be provided at the four of conductive magnetic yoke
Side can also be positioned only at two opposite long sides of conductive magnetic yoke or short side, the conductive magnetic yoke edge of side magnet not be arranged relative to magnetic conduction
Yoke extends vertically to form side wall, and side magnetic circuit and side wall form magnetic gap with center magnetic path jointly.
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to the embodiment of the utility model, for those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
The row of protection domain.
Claims (10)
1. a kind of electroconductive elastic sheet, including base portion, elastic joint part and float portion, one end of the elastic joint part and the base portion
Connection, the other end are connect with the float portion, and the end of the float portion is equipped with hook, and the base portion includes body part and extension
Door, the door hanging are equipped with limiting slot, and described to hang over to be limited to the float portion in the door hanging, feature exists
In,
The door hanging is reversely bent to form by the end of the body part, and plane is put down with where the body part where the door hanging
Angle between face is more than or equal to 0 ° and is less than or equal to 45 °.
2. a kind of electroconductive elastic sheet according to claim 1, which is characterized in that pass through between the door hanging and the body part
Segmental arc connects.
3. a kind of electroconductive elastic sheet according to claim 2, which is characterized in that plane where the door hanging and the body part
Place plane is parallel.
4. a kind of electroconductive elastic sheet according to claims 1 to 3 any claim, which is characterized in that the hook includes
The bottom surface of first bending part and the second bending part, first bending part and door hanging offsets for limiting float portion vertical direction
Displacement, the side of second bending part and the door hanging offsets for preventing hook from deviating from from door hanging.
5. a kind of electroconductive elastic sheet according to claim 4, which is characterized in that second bending part vertically prolongs
It stretches.
6. a kind of electroconductive elastic sheet according to claim 1, which is characterized in that be formed on the body part of the base portion and institute
State the escape groove for being avoided to the hook of limiting slot connection.
7. a kind of electroconductive elastic sheet according to claim 1, which is characterized in that the float portion is equipped with and is used for and external electrical
The contact of road electrical connection.
8. a kind of electroconductive elastic sheet according to claim 1, which is characterized in that the electroconductive elastic sheet is integrally formed.
9. a kind of loud speaker, including shell and the vibrational system in the shell and magnetic circuit system, the vibrational system
Including combining fixed vibrating diaphragm and voice coil, the voice coil to be equipped with two voice coil leads, which is characterized in that
It is fixed on the shell just like the electroconductive elastic sheet described in claim 1-8 any claims, the electroconductive elastic sheet is two
It is a, it is electrically connected respectively with two voice coil leads of voice coil.
10. a kind of loud speaker according to claim 9, which is characterized in that the conductive sheet there are two injection moldings in the shell,
Two voice coil leads are electrically connected with the first end of described two conductive sheets respectively, the base portion difference of described two electroconductive elastic sheets
It is welded and fixed with the second end of described two conductive sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721429469.2U CN207665205U (en) | 2017-10-31 | 2017-10-31 | Electroconductive elastic sheet and loud speaker including the electroconductive elastic sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721429469.2U CN207665205U (en) | 2017-10-31 | 2017-10-31 | Electroconductive elastic sheet and loud speaker including the electroconductive elastic sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207665205U true CN207665205U (en) | 2018-07-27 |
Family
ID=62938548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721429469.2U Active CN207665205U (en) | 2017-10-31 | 2017-10-31 | Electroconductive elastic sheet and loud speaker including the electroconductive elastic sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207665205U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659714A (en) * | 2018-12-26 | 2019-04-19 | 江苏米笛声学科技有限公司 | Conducting attachment device between superlinearity loudspeaker and cell phone mainboard |
| CN109819381A (en) * | 2018-12-29 | 2019-05-28 | 瑞声声学科技(深圳)有限公司 | A kind of loudspeaker |
| WO2020134353A1 (en) * | 2018-12-29 | 2020-07-02 | 瑞声声学科技(深圳)有限公司 | Speaker module |
-
2017
- 2017-10-31 CN CN201721429469.2U patent/CN207665205U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659714A (en) * | 2018-12-26 | 2019-04-19 | 江苏米笛声学科技有限公司 | Conducting attachment device between superlinearity loudspeaker and cell phone mainboard |
| CN109819381A (en) * | 2018-12-29 | 2019-05-28 | 瑞声声学科技(深圳)有限公司 | A kind of loudspeaker |
| WO2020134353A1 (en) * | 2018-12-29 | 2020-07-02 | 瑞声声学科技(深圳)有限公司 | Speaker module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207665205U (en) | Electroconductive elastic sheet and loud speaker including the electroconductive elastic sheet | |
| CN207869370U (en) | Microphone device | |
| US9756443B2 (en) | Speaker module | |
| CN110418257B (en) | Sound producing device | |
| CN104883648B (en) | Vibrating speaker | |
| CN205283807U (en) | Many functional device with vibration function and vocal function | |
| CN103200472A (en) | Piezoelectric ceramic speaker and mobile terminal | |
| CN105681979B (en) | Loudspeaker | |
| CN206024101U (en) | Loudspeaker module and mobile terminal | |
| US11317216B2 (en) | Speaker | |
| CN207075089U (en) | Loudspeaker | |
| CN209823995U (en) | Sound production device | |
| CN208094784U (en) | Electroconductive elastic sheet and acoustical generator including the electroconductive elastic sheet | |
| CN210183527U (en) | Sound producing device | |
| CN208369847U (en) | Electric connection structure and vibrational system and loudspeaker in sounding device | |
| CN107396264B (en) | Loudspeaker | |
| CN208369834U (en) | Electroconductive elastic sheet and loudspeaker including the electroconductive elastic sheet | |
| CN207410478U (en) | Electroacoustic transducer | |
| CN206611574U (en) | Horn single body | |
| CN108848437A (en) | Loudspeaker mould group | |
| CN210225749U (en) | Loudspeaker and sound equipment | |
| CN205385601U (en) | Loudspeaker | |
| CN208434105U (en) | Loudspeaker mould group | |
| CN207099324U (en) | Loudspeaker | |
| CN207354601U (en) | Loudspeaker enclosure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |