CN204859548U - Electroacoustic transducer for electroacoustic transducer's coil pack and audio equipment - Google Patents
Electroacoustic transducer for electroacoustic transducer's coil pack and audio equipment Download PDFInfo
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- CN204859548U CN204859548U CN201520586943.7U CN201520586943U CN204859548U CN 204859548 U CN204859548 U CN 204859548U CN 201520586943 U CN201520586943 U CN 201520586943U CN 204859548 U CN204859548 U CN 204859548U
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Abstract
The utility model relates to an electroacoustic transducer for electroacoustic transducer's coil pack, and audio equipment. Electroacoustic transducer includes: a housing, the casing has the cavity and includes casing upper portion and casing lower part, the diaphragm, the diaphragm is set up in the cavity, and will the cavity separate for with the adjacent ante -chamber in casing upper portion and with the adjacent back cavity in casing lower part, the motor sub -assembly, the motor sub -assembly is set up in the back cavity, it is including being couple to the diaphragm armature and be used for the drive armature with the coil of diaphragm, the bearing plate, the lateral surface of bearing plate is provided with electric terminal, be used for with the outer outside device of casing with coil electricity in the casing is connected, wherein the coil has the wire, and this wire is followed the coil extends to the lateral surface of bearing plate and the electricity be connected to electric terminal.
Description
Technical field
The application relates generally to field of audio devices.More specifically, the application relates to the electroacoustic transducer and coil block thereof that use in the audio frequency apparatuses such as such as hearing aids.
Background technology
In recent years, field of audio devices, particularly such as the portable audio device such as hearing aids, headphone field experienced by fast development.The competition of field of audio devices, audio frequency apparatus manufacturer faces more challenges, and needs constantly reduce production cost and improve the quality of products.
In general, the audio frequency apparatus of such as hearing aids comprises microphone apparatus, amplifier and acceptor device (electroacoustic transducer).Microphone apparatus is for receiving sound wave and converting thereof into the signal of telecommunication.Amplifier accepts from microphone apparatus the signal of telecommunication and it is processed, then the treated signal of telecommunication is sent to acceptor device.The signal of telecommunication from amplifier is converted to the sound wave can heard by user by acceptor device.
The known electroacoustic transducer for hearing aids comprises housing and the barrier film comprised in the housing and a motor sub-assembly, and sound outlet.Motor sub-assembly drives barrier film vibrations thus produces sound and spread out of from sound outlet.Motor sub-assembly needs to be electrically connected to receive the signal of telecommunication with external equipment (such as amplifier), then converts the described signal of telecommunication to voice signal by barrier film vibrations.In prior art, the connection operation of motor sub-assembly and external equipment is cumbersome time-consuming, the manpower of at substantial, is unfavorable for the production cost reducing electroacoustic transducer.
Utility model content
Present applicant proposes a kind of novel electroacoustic transducer for audio frequency apparatus, a kind of novel coil block for electroacoustic transducer, and a kind of novel audio frequency apparatus.
According to an aspect of the application, provide a kind of electroacoustic transducer for audio frequency apparatus, this electroacoustic transducer comprises: housing, and described housing has cavity, and comprises housing upper and lower housing portion; Barrier film, described barrier film is arranged in described cavity, and described cavity is divided into ante-chamber and back cavity, and wherein said ante-chamber is adjacent with described housing upper, and described back cavity is adjacent with described lower housing portion; Motor sub-assembly, described motor sub-assembly is arranged in described back cavity, and it comprises the armature that is couple to described barrier film and for driving the coil of described armature and described barrier film; Support plate, the lateral surface of described support plate is provided with electric terminal, for the external devices outside described housing being electrically connected with the coil in described housing; Wherein, described coil has wire, and this wire extends to the lateral surface of described support plate from described coil and is directly electrically connected to described electric terminal.
In described electroacoustic transducer, the wire of coil extends to the lateral surface of support plate, and the electric terminal be directly electrically connected on support plate, thus eliminate in prior art for connecting the lead-in wire of wire and electric terminal, decrease number of components, simplify technique, thus greatly can reduce production cost.
In some execution mode of the application, described electric terminal is configured to expose from the diapire of described lower housing portion or the sidewall axially parallel with described housing of described lower housing portion.
In some execution mode of the application, the lateral surface of described support plate is concordant with the described diapire of the described lower housing portion making it expose or the surface of sidewall, or outwards exceeds the surface of described diapire or sidewall.
In some execution mode of the application, described support plate is attached to described coil, and wherein said wire is fixed to described support plate further by binding agent.
In some execution mode of the application, described electric terminal is directly electrically connected to the electrical lead of described external devices.
According to another aspect of the application, provide a kind of electroacoustic transducer for audio frequency apparatus, described electroacoustic transducer comprises: housing, and described housing has cavity, and comprises housing upper and lower housing portion; Barrier film, described barrier film is arranged in described cavity, and described cavity is divided into ante-chamber and back cavity, and wherein said ante-chamber is adjacent with described housing upper, and described back cavity is adjacent with described lower housing portion; Motor sub-assembly, described motor sub-assembly is arranged in described back cavity, and it comprises the armature that is couple to described barrier film and for driving the coil of described armature and described barrier film; Support plate, the lateral surface of described support plate is provided with electric terminal, for the external devices outside described housing being electrically connected with the coil in described housing; Wherein, described housing has opening, and described opening makes the lateral surface of described support plate expose, thus can pass through described opening from outside close to the electric terminal described support plate.
In some execution mode of the application, described opening is positioned at the sidewall of the diapire of described lower housing portion or the axially parallel with described housing of described lower housing portion.
In some execution mode of the application, described support plate is attached to described coil, and the size of wherein said opening is greater than the size of described support plate, thus whole support plate can be exposed by described opening.
In some execution mode of the application, described electric terminal is configured to the outer surface exceeding described housing from described opening.
In some execution mode of the application, the wire of described coil is directly electrically connected to described electric terminal, and described wire is fixed to described support plate by binding agent.
In some execution mode of the application, the lateral surface of described support plate is concordant with the diapire of the described lower housing portion at described opening place or the surface of sidewall or exceed the surface of described diapire or sidewall.
In some execution mode of the application, described electric terminal is directly electrically connected to the electrical lead of described external devices.
According to the another aspect of the application, provide a kind of coil block for electroacoustic transducer, described coil block comprises: coil, and described coil has wire; Support plate, described support plate is attached to described coil, and the lateral surface of wherein said support plate is provided with electric terminal, for external devices being electrically connected with described coil; Wherein, the wire of described coil is directly electrically connected to described electric terminal.
In some execution mode of the application, described wire is fixed to described support plate by binding agent.
According to another aspect of the application, provide a kind of audio frequency apparatus, this audio frequency apparatus comprises foregoing electroacoustic transducer.
In some execution mode of the application, described audio frequency apparatus is hearing aids, inner ear type monitor, headphone or electronics hearing protection.
Be more than the general introduction of the application, the situation of simplification, summary and omissions of detail may be had, therefore those skilled in the art will appreciate that this part is only Illustrative, and be not intended to limit the application's scope by any way.This overview section is the key feature of not intended to be determination claimed subject or essential feature both, and also not intended to be is used as the supplementary means of the scope determining claimed subject.
Accompanying drawing explanation
By being described below in detail with appending claims and being combined with accompanying drawing, the above and other feature understanding teachings herein will be known more fully.Be appreciated that these drawings depict only some execution modes of teachings herein, therefore should do not think the restriction to teachings herein scope.Unless stated otherwise, accompanying drawing needs not to be proportional, and parts like the general representation class of wherein similar label.
Fig. 1 shows the decomposition diagram of the electroacoustic transducer according to the application's execution mode;
Fig. 2 shows the longitudinal sectional view of electroacoustic transducer shown in Fig. 1;
Fig. 3 shows the perspective diagram of the coil block of electroacoustic transducer shown in Fig. 1.
Embodiment
In the following detailed description, with reference to the accompanying drawing forming the application's part.The illustrated embodiment described in the detailed description and the accompanying drawings not intended to be limit.When not departing from the spirit or scope of theme of the application, other execution modes can be adopted, and other changes can be made.Be appreciated that and can carry out multiple differently composed configuration, replacement, combination, design to the various aspects of general teachings herein that describe, graphic extension in the accompanying drawings herein, and all these forms a part for teachings herein clearly.
Hereinafter, in order to clearly describe specific embodiment, some specific terms will be adopted.But adopting the original idea of these terms and the protection range of unrestricted the application, the scope of these terms should extend to any equivalent replacement reaching roughly the same object with roughly the same means.
Hereinafter, for the ease of the specific features of the electroacoustic transducer according to the application is clearly described, be described with reference to the orientation shown in figure, but the application is also not intended to the modes of emplacement of restriction electroacoustic transducer, the orientation of electroacoustic transducer can be arbitrary.
Fig. 1 shows the decomposition diagram of the electroacoustic transducer 100 according to the application's execution mode.Fig. 2 shows the longitudinal section along its axial cutting of electroacoustic transducer 100.Fig. 3 shows the structural representation of the coil block of electroacoustic transducer 100.
With reference to Fig. 1 and 2, electroacoustic transducer 100 comprises: housing 110, barrier film 120 and motor sub-assembly 130.Housing 110 is configured to roughly rectangular shape, is provided with sound outlet 114 in its front end (left side in Fig. 1), and it is outside that the sound wave produced by electroacoustic transducer 100 is transferred to housing 110 by this sound outlet 114.But in this application, the shape of the housing 110 of electroacoustic transducer 100 is not limited to cuboid, other various suitable shapes can also be adopted, such as class cuboid, square, class square, cylinder, class cylinder or irregular polyhedron etc.Housing 110 can adopt the material manufacture of any appropriate, such as, adopts one or more the combination in plastics, metal, glass, pottery or above-mentioned material.According to the difference of material therefor, housing 110 can pass through punching press, casting, the suitable manufacture technics such as Unitarily molded.
Housing 110 comprises housing upper 112 and lower housing portion 113 further.In the execution mode shown in Fig. 1-2, housing upper 112 is configured to one end (left side in Fig. 1) to be had to the raised general flat plate-like of the U-shaped of downward-extension, and lower housing portion 113 is configured to the roughly box-like of upper opening.In some embodiments, lower housing portion 113 also has the opening 115 be arranged on its diapire 113a.In other execution modes, the sidewall 113b of lower housing portion 113 is provided with opening (not shown).
Together with housing upper 112 and lower housing portion 113 are fitted to each other by welding or the mode such as bonding, thus the common cavity 111 limiting hollow.Cavity 111 for settling other assemblies of electroacoustic transducer 100, such as barrier film 120 and motor sub-assembly 130.Motor sub-assembly 130 comprises magnet unit 142, coil block 135 (comprising coil 132 and support plate 140) and armature 131 further.Wherein, one end of armature 131 is fixed in magnet unit 142, and the other end can free movement, and this free end is connected with drive rod 133.
In the assembled state, as shown in Figure 2, barrier film 120 is arranged in cavity 111, and cavity 111 is divided into the ante-chamber 121 adjacent with housing upper 112 and the back cavity 122 adjacent with lower housing portion 113.Barrier film 120 is placed in lower housing portion 113, and is fixedly connected with the sidewall of lower housing portion 113.Particularly, the sidewall at the upper opening place of lower housing portion 113 is provided with positioning step 116, for supporting barrier film 120 and limiting the position of barrier film 120 relative to lower housing portion 113, the marginal portion of barrier film 120 can such as be fixed on positioning step 116 by adhesive.In some execution mode of the application, barrier film 120 also can be placed in housing upper 112 and to fix relative to housing upper 112.In some embodiments, also on housing upper 112 and lower housing portion 113, positioning step can be set respectively, thus when housing upper 112 coordinates with lower housing portion 113, barrier film 120 can be fixed be clamped in housing upper 112 and lower housing portion 113 positioning step between.
In the assembled state shown in Fig. 2, the bottom of coil block is near the diapire 113a of housing 110, and support plate 140 exceeds from opening 115, and a part for support plate 140 is exposed outside housing 110.
Fig. 3 show further the structure of coil block.As shown in Figure 3, coil block comprises coil 132 and support plate 140.The exterior contour of coil 132, roughly in cuboid, wherein has the through hole run through wherein.Support plate 140 is attached to the (side that be coil 132 in the present embodiment, that be parallel to lower housing portion 113 diapire 113a in the assembled state, a side of coil 132, see Fig. 2), wherein the lateral surface 140a back to coil 132 of support plate 140 is provided with electric terminal 141, and this electric terminal 141 is for being electrically connected being positioned at the external devices (not shown) outside housing 110 with the coil 132 of housing 110.Coil 132 has wire 132a, and this wire 132a extends to the lateral surface 140a of support plate 140 from coil 132 and is directly electrically connected to electric terminal 141.Here, the wire of coil and electric terminal " being directly electrically connected " refer to not need to arrange between wire 132a and electric terminal any than wire 132a thicker and intensity higher, rise and support and the lead-in wire of connection function.Such as, wire 132a can be welded direct on electric terminal.By the method for this direct connection, the length of wire to electric terminal of coil can be reduced, thus not need to use the thicker and lead-in wire that intensity is higher to connect described wire and electric terminal.Coil is with the very little wire coiling of diameter, in prior art designs, it cannot directly be connected with the electric terminal of printed substrate, needs the wire of coil be manually wrapped in thicker lead-in wire one end and weld with it, and the other end of lead-in wire is electrically connected with electric terminal through housing wall.To be wound around manual for the wire of coil and the operation be soldered on lead-in wire needs the manpower of at substantial, to be unfavorable for enhancing productivity and reducing production cost.Direct method of attachment described in the application can address this problem effectively.
In some embodiments, wire 132a can be fixed on support plate 140 further by binding agent, to prevent wire 132a relative to support plate 140 accidental displacement or to fracture.In some embodiments, the thickness of electric terminal 141 is greater than the thickness of support plate 140, therefore electric terminal 141 can penetrate support plate 140, make wire 132a can directly be electrically connected to electric terminal 141 from the medial surface of support plate 140, do not need equally to connect any lead-in wire between wire 132a and electric terminal.External devices can be electrically connected on electric terminal 141, thus is connected to coil 132 by electric terminal 141.Such as, the electrical lead of external devices can be soldered to the side towards outside of electric terminal 141, if the wire 132a of coil is connected to electric terminal 141 at the lateral surface 140a of support plate, then the electrical lead of external devices and wire 132a are connected to electric terminal in the same side (i.e. outside) of electric terminal; If the wire 132a of coil is connected to electric terminal 141 at the medial surface of support plate, then the electrical lead of external devices and wire 132a are connected to electric terminal at the not homonymy of electric terminal.
As shown in Figure 2, in the assembled state, the lateral surface 140a of support plate 140 exposes by the opening 115 of the diapire 113a being formed in shell 110, and the lateral surface 140a of support plate 140 outwards exceeds the surface of diapire 113a.The size of opening 115 can be arranged so that lateral surface 140a either partially or fully exposes, thus can by opening 115 from outside close to the electric terminal 141 support plate 140, the electrical lead of external devices (not shown) directly can not be electrically connected with electric terminal 141 by any intermediary device or wire.Be appreciated that in some execution mode of the application, the lateral surface 140a of support plate 140 also can be arranged to flush with the surface of diapire 113a.In some execution mode of the application, the lateral surface 140a of support plate 140 can be arranged to the surface lower than diapire 113a, electric terminal 141 is all in housing, but electric terminal 141 still exposes by opening 115, and the electrical lead of external devices can enter housing by opening 115 and directly be electrically connected on electric terminal 141, need not arrange any intermediary device or wire between the electrical lead and electric terminal 141 of external devices.In some embodiments, can arrange in seal (not shown) or the gap between support plate 140 and opening 115 to pour between opening 115 and support plate 140 and seal glue, enter housing 110 to prevent external substance (such as dust, water etc.) via the gap between support plate 140 and opening 115.In some execution mode of the application, also opening 115 can be configured to only allow electric terminal 141 itself to exceed the outer surface of housing 110, namely the part or all of of electric terminal 141 reaches beyond housing from enclosure interior, to be electrically connected with external devices, but support plate 140 itself does not stretch out outside housing.
Further, in some execution mode of the application, such as can by making that support plate 140 attaches to coil 132, parallel with the axis of housing 110 in the assembled state side, thus coil block is arranged so that support plate 140 (or the electric terminal 141 on support plate 140) exposes or exceed the outer surface of housing 110 by the sidewall 113b of housing 110.Correspondingly, in some embodiments, the lateral surface 140a of support plate 140 can be configured to concordant with the surface of sidewall 113b or exceed the surface of sidewall 113b.
Shown in Fig. 1-2 be in execution mode, electroacoustic transducer 100 comprises housing 110, barrier film 120, drive rod 133, motor sub-assembly 130, sound outlet 114 and electric terminal 141.Barrier film 120 is arranged in housing 110, and enclosure interior space is separated into ante-chamber and back cavity.Motor sub-assembly 130 is arranged in the back cavity of housing, and the armature 131 of motor sub-assembly is coupled by drive rod 133 and barrier film 120.Wherein, armature 131 is configured to roughly U-shaped, an arm of U-shaped armature 131 is fixedly connected on magnet unit 142, and another arm 131a of U-shaped armature 131 stretches out forward through the through hole of coil 132 and the through hole of magnet unit, and its free end is coupled by drive rod 133 and barrier film 120.The concrete structure of armature and can changing arbitrarily relative to the arrangement of coil and barrier film, as long as drive rod can be mechanically connected armature and barrier film, makes barrier film to be driven by armature and to vibrate.Such as, in some execution mode of the application, the armature of E shape can be adopted.In some embodiments, drive rod 133 also can be connected to the middle part of armature 131 arm and the middle part of barrier film 120.
When the external devices be electrically connected with electric terminal 141 inputs the signal of telecommunication of alternation to coil 132, in coil 132, produce alternating magnetic field, thus drive the arm 131a up-down vibration of armature 131, and drive barrier film 120 to vibrate together by drive rod 133.The vibration of barrier film 120 causes the air vibration in ante-chamber 121 and produces the sound wave that people's ear can hear, this sound wave spreads out of outside housing 110 through sound outlet 114, thus can be heard by the ear of user.
In this application, word " comprises " element and step of not getting rid of other, and wording " one ", " one " do not get rid of plural number, unless otherwise to explicitly point out or obviously and contradicted by context at this.In the practical application of the application, the function of the multiple technical characteristics quoted during a parts possibility enforcement of rights requires.Any and all examples used in the application or citing formula language (" such as ", " such as ", " as " etc.), only for illustrating the application better, but not the scope of the application is limited, unless clearly stated in claims.
Below each execution mode of the application is exemplarily described by reference to the accompanying drawings.Those skilled in the art's content disclosed in this specification can be expected easily, can according to actual needs the concrete structure of all parts of electroacoustic transducer disclosed in each execution mode and annexation thereof suitably be adjusted and be reconfigured, and the spirit of the application can not be departed from.The protection range of the application is as the criterion with claims limited range.
Claims (16)
1. an electroacoustic transducer, is characterized in that, this electroacoustic transducer comprises:
Housing, described housing has cavity, and comprises housing upper and lower housing portion;
Barrier film, described barrier film is arranged in described cavity, and described cavity is divided into ante-chamber and back cavity, and wherein said ante-chamber is adjacent with described housing upper, and described back cavity is adjacent with described lower housing portion;
Motor sub-assembly, described motor sub-assembly is arranged in described back cavity, and it comprises the armature that is couple to described barrier film and for driving the coil of described armature and described barrier film;
Support plate, the lateral surface of described support plate is provided with electric terminal, for the external devices outside described housing being electrically connected with the coil in described housing;
Wherein, described coil has wire, and this wire extends to the lateral surface of described support plate from described coil and is directly electrically connected to described electric terminal.
2. electroacoustic transducer according to claim 1, is characterized in that, described electric terminal is configured to expose from the diapire of described lower housing portion or the sidewall axially parallel with described housing of described lower housing portion.
3. electroacoustic transducer according to claim 2, is characterized in that, the lateral surface of described support plate is concordant with the described diapire of the described lower housing portion making it expose or the surface of sidewall, or outwards exceeds the surface of described diapire or sidewall.
4. electroacoustic transducer according to claim 1, is characterized in that, described support plate is attached to described coil, and described wire is fixed to described support plate further by binding agent.
5. electroacoustic transducer according to claim 1, is characterized in that, described electric terminal is directly electrically connected to the electrical lead of described external devices.
6. for an electroacoustic transducer for audio frequency apparatus, it is characterized in that, described electroacoustic transducer comprises:
Housing, described housing has cavity, and comprises housing upper and lower housing portion;
Barrier film, described barrier film is arranged in described cavity, and described cavity is divided into ante-chamber and back cavity, and wherein said ante-chamber is adjacent with described housing upper, and described back cavity is adjacent with described lower housing portion;
Motor sub-assembly, described motor sub-assembly is arranged in described back cavity, and it comprises the armature that is couple to described barrier film and for driving the coil of described armature and described barrier film;
Support plate, the lateral surface of wherein said support plate is provided with electric terminal, for the external devices outside described housing being electrically connected with the coil in described housing;
Wherein, described housing has opening, and described opening makes the lateral surface of described support plate expose, thus can pass through described opening from outside close to the electric terminal described support plate.
7. electroacoustic transducer according to claim 6, is characterized in that, described opening is positioned at the sidewall of the diapire of described lower housing portion or the axially parallel with described housing of described lower housing portion.
8. electroacoustic transducer according to claim 6, is characterized in that, described support plate is attached to described coil, and the size of described opening is more than or equal to the size of described support plate, thus whole support plate can be exposed by described opening.
9. electroacoustic transducer according to claim 6, is characterized in that, described electric terminal is configured to the outer surface exceeding described housing from described opening.
10. electroacoustic transducer according to claim 6, is characterized in that, the wire of described coil is directly electrically connected to described electric terminal, and described wire is fixed to described support plate by binding agent.
11. electroacoustic transducers according to claim 6, is characterized in that, the lateral surface of described support plate is concordant with the diapire of the described lower housing portion at described opening place or the surface of sidewall or exceed the surface of described diapire or sidewall.
12. electroacoustic transducers according to claim 6, is characterized in that, described electric terminal is directly electrically connected to the electrical lead of described external devices.
13. 1 kinds, for the coil block of electroacoustic transducer, is characterized in that, described coil block comprises:
Coil, described coil has wire; With
Support plate, described support plate is attached to described coil, and the lateral surface of wherein said support plate is provided with electric terminal, for external devices being electrically connected with described coil;
Wherein, the wire of described coil is directly electrically connected to described electric terminal.
14. coil blocks according to claim 13, is characterized in that, described wire is fixed to described support plate by binding agent.
15. 1 kinds of audio frequency apparatuses, is characterized in that, this audio frequency apparatus comprises the electroacoustic transducer according to any one of claim 1-12.
16. audio frequency apparatuses according to claim 15, is characterized in that, described audio frequency apparatus is hearing aids, inner ear type monitor, headphone or electronics hearing protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520586943.7U CN204859548U (en) | 2015-08-06 | 2015-08-06 | Electroacoustic transducer for electroacoustic transducer's coil pack and audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520586943.7U CN204859548U (en) | 2015-08-06 | 2015-08-06 | Electroacoustic transducer for electroacoustic transducer's coil pack and audio equipment |
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| CN204859548U true CN204859548U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520586943.7U Active CN204859548U (en) | 2015-08-06 | 2015-08-06 | Electroacoustic transducer for electroacoustic transducer's coil pack and audio equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050010A (en) * | 2015-08-06 | 2015-11-11 | 楼氏电子(苏州)有限公司 | Electro-acoustic transducer, coil block used for electro-acoustic transducer and audio device |
-
2015
- 2015-08-06 CN CN201520586943.7U patent/CN204859548U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050010A (en) * | 2015-08-06 | 2015-11-11 | 楼氏电子(苏州)有限公司 | Electro-acoustic transducer, coil block used for electro-acoustic transducer and audio device |
| CN105050010B (en) * | 2015-08-06 | 2019-06-04 | 楼氏Ipc（马来西亚）私人有限公司 | Electroacoustic transducer, coil block and audio frequency apparatus for electroacoustic transducer |
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Effective date of registration: 20170613 Address after: Illinois State Patentee after: Knowles Electronics LLC Address before: Cao Chun Hing Lake Street road of Xiangcheng Economic Development Zone Suzhou city Jiangsu province 215143 No. 20 Patentee before: Knowles Electronics(Suzhou)Co., Ltd. |
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Effective date of registration: 20170628 Address after: Malaysia Penang Patentee after: Lou IPC (Malaysia) Pte Ltd Address before: Illinois State Patentee before: Knowles Electronics LLC |
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