WO1998048595A1 - Electronic appliance comprising an electroacoustic transducer - Google Patents
Electronic appliance comprising an electroacoustic transducer Download PDFInfo
- Publication number
- WO1998048595A1 WO1998048595A1 PCT/GB1997/001114 GB9701114W WO9848595A1 WO 1998048595 A1 WO1998048595 A1 WO 1998048595A1 GB 9701114 W GB9701114 W GB 9701114W WO 9848595 A1 WO9848595 A1 WO 9848595A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casing
- electroacoustic transducer
- electronic appliance
- housing
- passing hole
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000000806 elastomer Substances 0.000 claims description 6
- 239000012858 resilient material Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
Definitions
- the present invention is related to an electronic appliance comprising an electroacoustic transducer, such as a loudspeaker.
- an electronic appliance comprising an electroacoustic transducer, such as a loudspeaker.
- a typical example of such an electronic appliance is a mobile handheld telephone.
- the loudspeakers in known electronic appliances are acoustically sealed against the internal surface of the housing. Usually, this is achieved by using double side adhesive tape, brackets and sealing rings, or the like. Therefore, the assembly of the loudspeaker in the housing is expensive due to the number of parts involved. Further, it is time consuming, cumbersome and difficult to be carried out by robots, since adhesive tapes are difficult to be handled accurately and flying leads are used to connect the loudspeaker to the printed circuit. The quality of the above described sealing methods is restricted and may also deteriorate during the use of the mobile handheld telephone due to mechanical stress, shock or the like.
- the object underlying the present invention is therefore to overcome the above problems and to provide an electronic appliance wherein the electroacoustic transducer is acoustically separated from the housing of said electronic appliance.
- this concept is devised in a presently preferred embodiment of the invention, where said electronic appliance comprises a housing enclosing an electronic circuit and an electroacoustic transducer, said electroacoustic transducer being acoustically coupled to a casing, said casing being provided with at least one sound passing hole, said housing having an aperture, and a part of said casing having said at least one sound passing hole is extended through said aperture.
- the electroacoustic transducer comprises a casing which ist provided with at least one sound passing hole and adapted to be mounted within the housing of said electronic appliance in an acoustically isolated manner.
- said casing of the electroacoustic transducer is formed of a compliant material. This increases the userfriendliness of the mobile handheld telephone which conventionally have hard plastic housings also in the earpiece region. Moreover, the influence of disturbing noises from outside can be reduced by the casing made of a compliant material.
- said casing preferably contains an acoustic chamber for said electroacoustic transducer.
- This acoustic chamber can be designed to tailor the acoustical properites of the electroacoustic transducer as desired.
- said casing encloses at least a collar of said electroacoustic transducer.
- the collar forms or encompasses the edge of the membrane of the electroacoustic transducer.
- said part of said casing having said at least one sound passing hole is mechanically decoupled from the rim of said aperture formed in the housing of the electronic appliance.
- At least or only said part of said casing having said at least one sound passing hole is formed of a resilient material, preferably an elastomer.
- said casing is formed of a resilient material, preferably an elastomer
- said housing is formed of a rigid material, preferably hard plastic.
- the properties of the material of the housing can be better selected to serve the purpose of the housing (protection of the interior, easy and comfortable handling of the electronic appliance, ergonomic and aesthetic aspects, differentiation with respect to competitors' design etc.) while the properties of the material of the casing can be better selected to serve the purpose of the casing (good acoustical properies, protection against surrounding noise, comfortable contact between the earpiece, i.e. the casing, and the user's ear, even during longer use of the electronic device) .
- said electroacoustic transducer and/or its casing can be directly mounted at a printed circuit board or any other component within or of the houseing. This provides for the advantage of a more efficient production, as no flying leads from the electroacoustic transducer to the printed circuit board are required. Also, no additional mounting material (double side adhesive, etc.) are required to fix and seal the electroacoustic transducer at the housing of the electronic appliance. Moreover, the function of the assembly on the printed circuit board can be acoustically tested before the printed circuit board and the electroacoustic transducer is completely mounted in the housing of the electronic appliance. This facilitates production, service and maintenance.
- the present invention is also related to an electronic appliance comprising an electroacoustic transducer, such as a loudspeaker, said electronic appliance comprising a housing enclosing an electronic circuit and an electroacoustic transducer, said electroacoustic transducer being acoustically coupled to a casing, said casing or said electroacoustic transducer directly mounted at a printed circuit board, said casing being provided with at least one sound passing hole, said housing having an aperture, and a part of said casing having said at least one sound passing hole being oriented towards said aperture.
- an electroacoustic transducer such as a loudspeaker
- said electronic appliance comprising a housing enclosing an electronic circuit and an electroacoustic transducer, said electroacoustic transducer being acoustically coupled to a casing, said casing or said electroacoustic transducer directly mounted at a printed circuit board, said casing being provided with at least one sound passing hole, said housing having
- said casing is formed preferably of a compliant material, and/or said casing contains an acoustic chamber for said electroacoustic transducer, and/or said casing encloses at least a collar of said said electroacoustic transducer, and/or said part of said casing having said at least one sound passing hole is mechanically decoupled from the rim of said aperture, and/or said casing is formed of a resilient material, preferably an elastomer, and said housing is formed of a rigid material, preferably hard plastic.
- Fig. 1 shows a partial front view of a electronic appliance, such as a handheld mobile telephone.
- Fig. 2 shows a sectional view along the line I-I in Fig. 1.
- Fig. 1 shows the front view of the the upper part of a handheld mobile telephone.
- This mobile telephone has a housing 10 in which an electroacoustic transducer, a loudspeaker 12, is mounted.
- the loudspeaker 12 is electrically connected to an electronic circuit (not shown) mounted on a printed circuit board 14.
- the loudspeaker 12 is acoustically coupled to a casing 16 which is provided with a plurality of sound passing holes 18.
- the housing 10 has an aperture 20 through which a part 22 of the casing 16 is extended.
- the part 22 of the casing 16 comprises six sound passing holes 18 which are evenly distributed on the portion of part 22 exhibited to the user's ear during the use of the handheld mobile telephone.
- the casing 16 is formed of a compliant material, such as soft rubber.
- the shape of the casing 16 is designed to form an acoustic chamber 24 for said electroacoustic transducer 12. More specifically, this acoustic chamber 24 is limited by the membrane 36 of the electroacoustic transducer 12 on the one side, by the part 22 of the casing 16 extending through the aperture 20 of the housing 10 ort the other side, and by the substantially cylindrical wall of the casing 16. As the diameter of the circular aperture 20 is smaller than the outer diameter of the of the electroacoustic transducer 12, the substantially cylindrical wall of the casing 16 has a step 30.
- the outer diameter of the wall of the casing 16 in the region where it projects through the aperture 20 is slightly smaller than the inner diameter of the rim of the aperture 20. This feature further ensures that the casing 16 is mechanically and acoustically decoupled from the rim of said aperture 20.
- the casing 16 encloses a collar 32 of said said electroacoustic transducer 12.
- the electroacoustic transducer 12 is held in a sealed manner a recess in the casing 16.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Telephone Set Structure (AREA)
Abstract
An electronic appliance comprises an electroacoustic transducer, such as a loudspeaker, a housing (10) enclosing an electronic circuit and an electroacoustic transducer (12). The electroacoustic transducer (12) is acoustically coupled to a casing (16). The casing (16) is provided with at least one sound passing hole (18). The housing (10) has an aperture (20), and a part (22) of the casing (16) which has the at least one sound passing hole (18) is extended through the aperture (20). The casing (16) is acoustically decoupled from the housing (10).
Description
ELECTRONIC APPLIANCE COMPRISING AN ELECTROACOUSTIC TRANSDUCER
DESCRIPTION
The present invention is related to an electronic appliance comprising an electroacoustic transducer, such as a loudspeaker. A typical example of such an electronic appliance is a mobile handheld telephone.
In order to avoid acoustical shortcircuits between the front and the rear of the membrane of loudspeakers, the loudspeakers in known electronic appliances are acoustically sealed against the internal surface of the housing. Usually, this is achieved by using double side adhesive tape, brackets and sealing rings, or the like. Therefore, the assembly of the loudspeaker in the housing is expensive due to the number of parts involved. Further, it is time consuming, cumbersome and difficult to be carried out by robots, since adhesive tapes are difficult to be handled accurately and flying leads are used to connect the loudspeaker to the printed circuit. The quality of the above described sealing methods is restricted and may also deteriorate during the use of the mobile handheld telephone due to mechanical stress, shock or the like.
Moreover, this prior art approach of mounting the loudspeaker directly to the interior surface of the housing of the electronic appliance imposes restrictions on the aesthetic and ergonomic design of the earpiece region of the electronic appliance, which in turn can make it difficult for the user to identify and to properly position the earpiece with its sound passing holes against the ear.
The object underlying the present invention is therefore to overcome the above problems and to provide an electronic appliance wherein the electroacoustic transducer is
acoustically separated from the housing of said electronic appliance.
This acoustical separation also results in a more versatile mechanical mounting concept allowing for many advantages described hereinafter.
According to the invention, this concept is devised in a presently preferred embodiment of the invention, where said electronic appliance comprises a housing enclosing an electronic circuit and an electroacoustic transducer, said electroacoustic transducer being acoustically coupled to a casing, said casing being provided with at least one sound passing hole, said housing having an aperture, and a part of said casing having said at least one sound passing hole is extended through said aperture.
In other words, the electroacoustic transducer comprises a casing which ist provided with at least one sound passing hole and adapted to be mounted within the housing of said electronic appliance in an acoustically isolated manner.
Preferably, said casing of the electroacoustic transducer is formed of a compliant material. This increases the userfriendliness of the mobile handheld telephone which conventionally have hard plastic housings also in the earpiece region. Moreover, the influence of disturbing noises from outside can be reduced by the casing made of a compliant material.
In order to further increase the acoustical properties of the electroacoustic transducer, said casing preferably contains an acoustic chamber for said electroacoustic transducer. This acoustic chamber can be designed to tailor the acoustical properites of the electroacoustic transducer as desired.
In a presently preferred embodiment of the invention, said casing encloses at least a collar of said electroacoustic
transducer. The collar forms or encompasses the edge of the membrane of the electroacoustic transducer. Depending on the actual shape and structure of the electroacoustic transducer, it is however also possible to enclose the electroacoustic transducer completely by said casing.
Preferably, said part of said casing having said at least one sound passing hole is mechanically decoupled from the rim of said aperture formed in the housing of the electronic appliance.
Instead of making the entire casing of the same compliant material, it is also possible, that at least or only said part of said casing having said at least one sound passing hole is formed of a resilient material, preferably an elastomer.
In a preferred embodiment of the invention, said casing is formed of a resilient material, preferably an elastomer, and said housing is formed of a rigid material, preferably hard plastic. This allows for a more tactile feature being made of the earpiece, as a soft and compliant casing of the electroacoustic transducer aids the alignment of the user's ear against the earpiece.
Moreover, to make the material of the housing and the material of the casing being different allows the housing being of different colour, texture, shape etc. than the casing. Hence, the properties of the material of the housing can be better selected to serve the purpose of the housing (protection of the interior, easy and comfortable handling of the electronic appliance, ergonomic and aesthetic aspects, differentiation with respect to competitors' design etc.) while the properties of the material of the casing can be better selected to serve the purpose of the casing (good acoustical properies, protection against surrounding noise, comfortable contact between the earpiece, i.e. the casing,
and the user's ear, even during longer use of the electronic device) .
Further, said electroacoustic transducer and/or its casing can be directly mounted at a printed circuit board or any other component within or of the houseing. This provides for the advantage of a more efficient production, as no flying leads from the electroacoustic transducer to the printed circuit board are required. Also, no additional mounting material (double side adhesive, etc.) are required to fix and seal the electroacoustic transducer at the housing of the electronic appliance. Moreover, the function of the assembly on the printed circuit board can be acoustically tested before the printed circuit board and the electroacoustic transducer is completely mounted in the housing of the electronic appliance. This facilitates production, service and maintenance.
The present invention is also related to an electronic appliance comprising an electroacoustic transducer, such as a loudspeaker, said electronic appliance comprising a housing enclosing an electronic circuit and an electroacoustic transducer, said electroacoustic transducer being acoustically coupled to a casing, said casing or said electroacoustic transducer directly mounted at a printed circuit board, said casing being provided with at least one sound passing hole, said housing having an aperture, and a part of said casing having said at least one sound passing hole being oriented towards said aperture.
In this electronic appliance, said casing is formed preferably of a compliant material, and/or said casing contains an acoustic chamber for said electroacoustic transducer, and/or said casing encloses at least a collar of said said electroacoustic transducer, and/or said part of said casing having said at least one sound passing hole is mechanically decoupled from the rim of said aperture, and/or
said casing is formed of a resilient material, preferably an elastomer, and said housing is formed of a rigid material, preferably hard plastic.
Further features, advantages and possible modifications from the above-described invention will become readily appearent to a person skilled in the art upon studying the subsequent description of a presently preferred embodiment with reference to the drawings.
Fig. 1 shows a partial front view of a electronic appliance, such as a handheld mobile telephone.
Fig. 2 shows a sectional view along the line I-I in Fig. 1.
Fig. 1 shows the front view of the the upper part of a handheld mobile telephone. This mobile telephone has a housing 10 in which an electroacoustic transducer, a loudspeaker 12, is mounted.
The loudspeaker 12 is electrically connected to an electronic circuit (not shown) mounted on a printed circuit board 14. The loudspeaker 12 is acoustically coupled to a casing 16 which is provided with a plurality of sound passing holes 18.
The housing 10 has an aperture 20 through which a part 22 of the casing 16 is extended. The part 22 of the casing 16 comprises six sound passing holes 18 which are evenly distributed on the portion of part 22 exhibited to the user's ear during the use of the handheld mobile telephone.
The casing 16 is formed of a compliant material, such as soft rubber. The shape of the casing 16 is designed to form an acoustic chamber 24 for said electroacoustic transducer 12. More specifically, this acoustic chamber 24 is limited by the membrane 36 of the electroacoustic transducer 12 on the one side, by the part 22 of the casing 16 extending through the
aperture 20 of the housing 10 ort the other side, and by the substantially cylindrical wall of the casing 16. As the diameter of the circular aperture 20 is smaller than the outer diameter of the of the electroacoustic transducer 12, the substantially cylindrical wall of the casing 16 has a step 30.
The outer diameter of the wall of the casing 16 in the region where it projects through the aperture 20 is slightly smaller than the inner diameter of the rim of the aperture 20. This feature further ensures that the casing 16 is mechanically and acoustically decoupled from the rim of said aperture 20.
To provide a rigid and fixed mounting of the casing 16 at the electroacoustic transducer 12, the casing 16 encloses a collar 32 of said said electroacoustic transducer 12. In other words, the electroacoustic transducer 12 is held in a sealed manner a recess in the casing 16.
The concept described above is equally applicable to a microphone instead of a loudspeaker.
Claims
1. Electronic appliance comprising an electroacoustic transducer, such as a loudspeaker, - said electronic appliance comprising a housing (10) enclosing an electronic circuit and an electroacoustic transducer (12) ,
- said electroacoustic transducer (12) being acoustically coupled to a casing (16) , - said casing (16) being provided with at least one sound passing hole (18) ,
- said housing (10) having an aperture (20) , and
- a part (22) of said casing (16) having said at least one sound passing hole (18) is extended through said aperture (20) .
2. Electronic appliance according to claim 1, wherein
- said casing (16) is formed of a compliant material.
3. Electronic appliance according to any of claims 1 or 2 , wherein
- said casing (16) contains an acoustic chamber (24) for said electroacoustic transducer (12) .
4. Electronic appliance according to any of claims 1 to 3 , wherein
- said casing (16) encloses at least a collar (32) of said electroacoustic transducer (12) .
5. Electronic appliance according to any of claims 1 to 4 , wherein
- said part (22) of said casing (16) having said at least one sound passing hole (18) is mechanically decoupled from the rim of said aperture (20) .
6. Electronic appliance according to any of claims 1 to 4 , wherein
- at least said part (22) of said casing (16) having said at least one sound passing hole (18) is formed of a resilient material, preferably an elastomer.
7. Electronic appliance according to claim 1, wherein said casing (16) is formed of a resilient material, preferably an elastomer, and
- said housing (10) is formed of a rigid material, preferably hard plastic.
8. Electronic appliance according to any of claims 1 to 7 , wherein
- said electroacoustic transducer (12) is directly mounted at a printed circuit board (14) .
9. Electronic appliance comprising an electroacoustic transducer, such as a loudspeaker,
- said electronic appliance comprising a housing enclosing an electronic circuit and an electroacoustic transducer,
- said electroacoustic transducer being acoustically coupled to a casing,
- said casing or said electroacoustic transducer being directly mounted to a printed circuit board, - said casing being provided with at least one sound passing hole,
- said housing having an aperture, and
- a part of said casing having said at least one sound passing hole being oriented towards said aperture.
10. Electronic appliance according to claim 9, wherein
- said casing is formed of a compliant material, and/or said casing contains an acoustic chamber for said electroacoustic transducer, and/or - said casing encloses at least a collar of said said electroacoustic transducer, and/or - said part of said casing having said at least one sound passing hole is mechanically decoupled from the rim of said aperture, and/or
- said casing is formed of a resilient material, preferably an elastomer, and - said housing is formed of a rigid material, preferably hard plastic.
11. Electronic appliance comprising a housing and an electroacoustic transducer, wherein the electroacoustic transducer is acoustically separated from the housing of said electronic appliance.
12. Electroacoustic transducer, such as a loudspeaker, for an electronic appliance, said electroacoustic transducer comprising a casing, said casing being provided with at least one sound passing hole and adapted to be mounted within the housing of said electronic appliance in an acoustically isolated manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/GB1997/001114 WO1998048595A1 (en) | 1997-04-22 | 1997-04-22 | Electronic appliance comprising an electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/GB1997/001114 WO1998048595A1 (en) | 1997-04-22 | 1997-04-22 | Electronic appliance comprising an electroacoustic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998048595A1 true WO1998048595A1 (en) | 1998-10-29 |
Family
ID=10806283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB1997/001114 WO1998048595A1 (en) | 1997-04-22 | 1997-04-22 | Electronic appliance comprising an electroacoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1998048595A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000059263A1 (en) * | 1999-03-25 | 2000-10-05 | Koninklijke Philips Electronics N.V. | Apparatus having an electroacoustic transducer mounted on a p.c. board with the aid of a holding means |
| WO2002091793A3 (en) * | 2001-05-03 | 2003-08-21 | Siemens Ag | Electronic unit comprising a loudspeaker device |
| CN100391235C (en) * | 2004-10-14 | 2008-05-28 | 索尼株式会社 | Electronic apparatus |
| CN112311926A (en) * | 2019-07-29 | 2021-02-02 | 比亚迪股份有限公司 | Electronic equipment and earphone device thereof |
| EP3806484B1 (en) * | 2018-09-03 | 2025-03-12 | Samsung Electronics Co., Ltd. | Electronic device including fixing member for fixing speaker |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2226959A (en) * | 1937-03-31 | 1940-12-31 | Rca Corp | Telephone |
| DE2440899A1 (en) * | 1973-02-28 | 1976-03-11 | Siemens Ag | Handset for telephone instrument - has stable casing made of two or more parts, and encapsulated electroacoustical transducer system |
| GB1437751A (en) * | 1973-02-28 | 1976-06-03 | Siemens Ag | Telephone handsets |
| US4730693A (en) * | 1985-04-18 | 1988-03-15 | Stanislas Kobus | Multichannel loudspeaker enclosure |
| US5042071A (en) * | 1990-01-18 | 1991-08-20 | Motorola, Inc. | Acoustic insulator for a telephone handset microphone |
| US5210793A (en) * | 1990-11-07 | 1993-05-11 | Motorola, Inc. | Apparatus for mounting transducers |
-
1997
- 1997-04-22 WO PCT/GB1997/001114 patent/WO1998048595A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2226959A (en) * | 1937-03-31 | 1940-12-31 | Rca Corp | Telephone |
| DE2440899A1 (en) * | 1973-02-28 | 1976-03-11 | Siemens Ag | Handset for telephone instrument - has stable casing made of two or more parts, and encapsulated electroacoustical transducer system |
| GB1437751A (en) * | 1973-02-28 | 1976-06-03 | Siemens Ag | Telephone handsets |
| US4730693A (en) * | 1985-04-18 | 1988-03-15 | Stanislas Kobus | Multichannel loudspeaker enclosure |
| US5042071A (en) * | 1990-01-18 | 1991-08-20 | Motorola, Inc. | Acoustic insulator for a telephone handset microphone |
| US5210793A (en) * | 1990-11-07 | 1993-05-11 | Motorola, Inc. | Apparatus for mounting transducers |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000059263A1 (en) * | 1999-03-25 | 2000-10-05 | Koninklijke Philips Electronics N.V. | Apparatus having an electroacoustic transducer mounted on a p.c. board with the aid of a holding means |
| WO2002091793A3 (en) * | 2001-05-03 | 2003-08-21 | Siemens Ag | Electronic unit comprising a loudspeaker device |
| CN100391235C (en) * | 2004-10-14 | 2008-05-28 | 索尼株式会社 | Electronic apparatus |
| EP3806484B1 (en) * | 2018-09-03 | 2025-03-12 | Samsung Electronics Co., Ltd. | Electronic device including fixing member for fixing speaker |
| CN112311926A (en) * | 2019-07-29 | 2021-02-02 | 比亚迪股份有限公司 | Electronic equipment and earphone device thereof |
| CN112311926B (en) * | 2019-07-29 | 2023-06-13 | 比亚迪股份有限公司 | Electronic equipment and earphone device thereof |
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