EP2955933B1 - Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug - Google Patents

Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug Download PDF

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Publication number
EP2955933B1
EP2955933B1 EP14171726.4A EP14171726A EP2955933B1 EP 2955933 B1 EP2955933 B1 EP 2955933B1 EP 14171726 A EP14171726 A EP 14171726A EP 2955933 B1 EP2955933 B1 EP 2955933B1
Authority
EP
European Patent Office
Prior art keywords
gear
retractable
screw rod
transmission
transmission shaft
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.)
Not-in-force
Application number
EP14171726.4A
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English (en)
French (fr)
Other versions
EP2955933A1 (de
Inventor
Yeh-Wen YU
Shiu-Ming Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hsin Chong Machinery Works Co Ltd
Original Assignee
Hsin Chong Machinery Works Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hsin Chong Machinery Works Co Ltd filed Critical Hsin Chong Machinery Works Co Ltd
Priority to ES14171726.4T priority Critical patent/ES2669118T3/es
Priority to EP14171726.4A priority patent/EP2955933B1/de
Publication of EP2955933A1 publication Critical patent/EP2955933A1/de
Application granted granted Critical
Publication of EP2955933B1 publication Critical patent/EP2955933B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • 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
    • 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
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Definitions

  • the present invention relates to a speaker structure, especially to a retractable speaker structure for use in a vehicle.
  • the mainframe of an audio/video equipment is mainly mounted in a panel at the front side of a driver's seat, and the speaker is mounted in a vehicle door or the panel; because the speaker has directivity relative to the user, the mounting location of the speaker plays an important role regarding to the entertaining effect; for allowing the speaker to provide an excellent performance, the speaker has to be protrudingly installed on the panel or the vehicle door, however, the above-mentioned arrangement would cause the speaker to be more likely to be damaged.
  • a retractable speaker structure available in the market, in which a motor is adopted for driving a retracting mechanism to move, and a speaker is secured at an end section of the retracting mechanism and moved with the retracting mechanism, thereby allowing the speaker to be selectively protruded out or retracted in the panel or the vehicle door according to the actual needs.
  • the motor adopted in the above-mentioned retractable speaker structure is mostly a synchronizing motor, and the synchronizing motor has properties of constant sped, no need for speed adjustment and requiring a smaller starting torque, so the retractable speaker structure is required to be additionally installed with a reducing gear and a location sensor for adjusting the rotation speed of the retracting mechanism and limiting the stroke of the retracting mechanism, thereby causing the retractable speaker structure requiring complicated components and having relatively higher production cost.
  • WO 2005/081520 A1 discloses a loudspeaker assembly, wherein the loudspeaker may be brought from a first non-exposed position into a second exposed position along an axis of movement, where the loudspeaker assembly comprises a transducer unit, means in the shape of for example motor means and a gearbox for moving the loudspeaker from the first position to the second position and vice-versa, and a closure member for covering the loudspeaker in its first position.
  • DE10324640 B3 discloses a mounting device for loudspeaker in automobile.
  • the mounting device has a loudspeaker housing receiving the loudspeaker and a seating receiving the loudspeaker housing, with a drive unit allowing the loudspeaker housing to be displaced within the seating between a lowered stowed position and a raised working position, in which the loudspeaker can by pivoted or rotated about at least one geometrical axis.
  • US 2012/128194 A1 discloses a pop-up tweeter installed in a vehicle, comprising: a casing; a driving unit inserted into an inside of the casing and configured to be movable upward and downward within the casing; and a speaker mounted on a top of the driving unit and configured to be movable upward and downward within the casing.
  • Document DE19534400 A1 discloses retractable loudspeakers for use in vehicles.
  • the loudspeakers are mounted so they can be moved between two positions dependent upon whether they are in or out of use.
  • Document US5072345 discloses a pop-up decorative landscape light - using lead screw or motor wound-unwound flexible coil to extend or retract light compartment from housing where a control selectively actuates a stepping motor for a predetermined number of revolutions in opposite rotation directions.
  • a telescopically extensible member is secured to the light compartment.
  • An elongated coil of flexible material has a free end extending through the telescopic extensible member.
  • the present invention is to provide a retractable speaker structure for use in a vehicle, in which a stepping motor is adopted for driving a retracting mechanism to protrude or retract, so the retractable speaker structure is able to be adjusted for being protruded or retracted according to the actual needs, thereby effectively simplifying components and lowering production cost.
  • the present invention provides a retractable speaker structure for use in a vehicle according to independent claim 1.
  • the present invention provides a retractable speaker structure for use in a vehicle.
  • the retractable speaker structure (10) mainly includes a case (1), a driving member (2), a retracting mechanism (3) and a speaker (4).
  • the case (1) is substantially formed in a rectangular shape, and formed with a chamber (11).
  • the case (1) is formed with a base (12) and a cover (13) correspondingly engaged with the base (12), and the chamber (11) is formed between the base (12) and the cover (13).
  • the cover (13) is formed with a penetrated hole (131) and a position limiting slot (132).
  • the driving member (2) is installed in the chamber (11) and includes a stepping motor (21) and a transmission shaft (22) connected to the stepping motor (21), wherein the stepping motor (21) is fastened on the case (1) and served to drive the transmission shaft (22) to rotate.
  • the driving member (2) further includes a transmission gear (23) sleeved on the transmission shaft (22) and rotated with the transmission shaft (22).
  • the retracting mechanism (3) is disposed in the chamber (11), and includes a screw rod (31) and a retractable rod (32) fitted with the screw rod (31).
  • the screw rod (31) is driven by the transmission shaft (22) to rotate, thereby enabling the retractable rod (32) to perform a protruding/retracting movement relative to the screw rod (31).
  • a further illustration is that one end of the screw rod (31) is disposed corresponding to the base (12), the other end thereof and the retractable rod (32) are both disposed corresponding to the penetrated hole (131), and the retractable rod (32) is formed with an inner thread segment, the screw rod (31) is able to be fitted with the retractable rod (32) through the above-mentioned inner thread segment.
  • the outer wall of the retractable rod (32) is protrudingly formed with a spiral guide rail (321) correspondingly received in the position limiting slot (132).
  • the retracting mechanism (3) further includes a passive gear (33) connected to an end section of the screw rod (31) and linked with the screw rod (31), thereby enabling the transmission gear (23) and the passive gear (33) to be mutually engaged for transmission.
  • the speaker (4) is secured at the end section of the retractable rod (32) and moved with the retractable rod (32), and with the installation of the above-mentioned spiral guide rail (321) and the position liming slot (132), the speaker (4) is enabled to be protruded or retracted with a rotating means.
  • the retractable speaker structure (10) provided by the present invention further includes a storage cylinder (5) fastened on the cover (13) and disposed corresponding to the retractable rod (32), thereby allowing the speaker (4) to be stored in or protruded out from the storage cylinder (5).
  • the assembly of the retractable speaker structure (10) is that: the case (1) is formed with the chamber (11); the driving member (2) is installed in the chamber (11) and includes the stepping motor (21) and the transmission shaft (22) connected to the stepping motor (22), wherein the stepping motor (21) is fastened on the case (1) and served to drive the transmission shaft (22) to rotate; the retracting mechanism (3) is disposed in the chamber (11) and includes the screw rod (31) and the retractable rod (32) fitted with the screw rod (31), the screw rod (31) is driven by the transmissions shaft (22) to rotate, thereby enabling the retractable rod (32) to perform the protruding/retracting movement relative to the screw rod (31); the speaker (4) is secured at the end section of the retractable rod (32) and moved with the retractable rod (32).
  • the retractable speaker structure (10) is able to be adjusted for being protruded or retracted according to the actual needs, thereby effectively simplifying components and lowering production cost.
  • FIG. 3 to FIG. 6 disclose the operating status of the retractable speaker structure (10) provided by the present invention; when the retractable speaker structure (10) is installed in a vehicle and the speaker (4) is not in use, the speaker (4) is stored and hidden in the storage cylinder (5); when the speaker (4) is desired to be used, the stepping motor (21) drives the transmission shaft (22) to rotate, the transmission shaft (22) drives the transmission gear (23) to rotate, then the transmission gear (23) drives the passive gear (33) for enabling the screw rod (31) to rotate, because the inner thread segment of the retractable rod (32) is fitted with the screw rod (31), the retractable rod (32) is pushed by the screw rod (31) for being ascended, thereby allowing the speaker (4) to be ascended from the storage cylinder (5), and because the spiral guide rail (321) of the retractable rod (32) is limited by the position limiting slot (132), when the speaker (4) is pushed by the retractable rod (32) for being ascended from the storage cylinder (5), the speaker
  • the position limiting slot (132) is matched with the shape of the spiral guide rail (321), so the retractable rod (32) is able to be smoothly rotated for being ascended thereby avoiding the situation of unsmooth ascend or even being jammed.
  • the stepping motor (21) just reversely rotates for driving the transmission shaft (22) to rotate.
  • the stepping motor (21) is one type of pulse motor, which is a motor gradually rotating with a certain angle, and an open loop is adopted for controlling, so a precise control of position and speed can be achieved without a feedback device for detecting location and speed.
  • the retractable speaker structure (10) provided by the present invention does not require a reducing gear nor a location sensor, and the rotation speed of the retractable rod (32) can still be effectively and stably controlled and the stroke of the retractable rod (32) can also be precisely limited, thereby allowing the retractable speaker structure (10) to be provided with advantages of simplifying components and lowering production cost.
  • FIG. 7 discloses a second embodiment illustrating the retractable speaker structure (10) provided by the present invention.
  • the second embodiment is substantially the same as the first embodiment, and the difference between the two is that the outer wall of the retractable rod (32) is protrudingly formed with a linear guide rail (322).
  • a further illustration is that the outer wall of the retractable rod (32) is formed with the linear guide rail (322), the cover (13) is formed with a position limiting slot (132) allowing the linear guide rail (322) to be received therein, and the retractable rod (32) is disposed corresponding to the above-mentioned penetrated hole (131), the linear guide rail (322) is mutually positioned with the position limiting slot (132), thereby enabling the speaker (4) to be protruded or retracted with a linearly moving means, and the same function and effect as the first embodiment can be provided.
  • FIG. 8 discloses a third embodiment illustrating the retractable speaker structure (10) provided by the present invention.
  • the third embodiment is substantially the same as the first embodiment, and the difference between the two is the configuration of the driving member (2), so the screw rod (31) is able to be driven by the transmission shaft (22) to rotate with a different means.
  • the driving member (2) further includes a first gear (24), a second gear (25) and a transmission chain (26); the first gear (24) is sleeved on the transmission shaft (22) and rotated with the transmission shaft (22), the second gear (25) is connected to the end section of the screw rod (31) and linked with the screw rod (31), and the transmission chain (26) is sleeved at the outer side of the first gear (24) and the second gear (25) and mutually engaged with the first gear (24) and the second gear (25) for transmission, so when the transmission shaft (22) is rotated, the transmission shaft (22) is able to drive the screw rod (31) to rotate through the first gear (24), the transmission chain (26) and the second gear (25) being mutually engaged. Accordingly, the same function and effect as the first embodiment can be provided.
  • FIG. 9 discloses a fourth embodiment illustrating the retractable speaker structure (10) provided by the present invention.
  • the fourth embodiment is substantially the same as the first embodiment, and the difference between the two is the configuration of the driving member (2), so the screw rod (31) is able to be driven by the transmission shaft (22) to rotate with a different means.
  • the driving member (2) further includes a first gear (24), a second gear (25) and a transmission belt (27);
  • the first gear (24) is sleeved on the transmission shaft (22) and rotated with the transmission shaft (22)
  • the second gear (25) is connected to the end section of the screw rod (31) and linked with the screw rod (31)
  • the inner wall of the transmission belt (27) is extended with an inner gear (271)
  • the transmission belt (27) is sleeved at the outer side of the first gear (24) and the second gear (25)
  • the inner gear (271) is mutually engaged with the first gear (24) and the second gear (25) for transmission, so when the transmission shaft (22) is rotated, the transmission shaft (22) is able to drive the screw rod (31) to rotate through the first gear (24), the inner gear (271) and the second gear (25) being mutually engaged. Accordingly, the same function and effect as the first embodiment can be provided.
  • FIG. 10 discloses a fifth embodiment illustrating the retractable speaker structure (10) provided by the present invention.
  • the fifth embodiment is substantially the same as the first embodiment, and the difference between the two is the configuration of the driving member (2), so the screw rod (31) is able to be driven by the transmission shaft (22) to rotate with a different means.
  • the driving member (2) further includes a first passive wheel (28), a second passive wheel (29) an a transmission belt (27');
  • the first passive wheel (28) is sleeved on the transmission shaft (22) and rotated with the transmission shaft (22), the second passive wheel (29) is connected to the end section of the screw rod (31) and linked with the screw rod (31), and the transmission belt (27') is tightly sleeved at the outer side of the first passive wheel (28) and the second passive wheel (29), so when the first passive wheel (28) is rotated, a friction force is generated between the transmission belt (27'), the first passive wheel (28) and the second passive wheel (29) thereby driving the second passive wheel (29) to rotate.
  • the transmission shaft (22) when the transmission shaft (22) is rotated, the transmission shaft (22) is able to drive the screw rod (31) to rotate through the friction force generated between the first passive wheel (28), the transmission belt (27') and the second passive wheel (29). Accordingly, the same function and effect as the first embodiment can be provided.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Claims (9)

  1. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug, beinhaltend:
    ein Gehäuse (1) mit einer Kammer (11), die zwischen einer Basis (12) und einer Abdeckung (13) gebildet ist;
    ein Antriebselement (2), das in der Kammer (11) installiert ist und einen Schrittmotor (21) und eine mit dem Schrittmotor (21) verbundene Getriebewelle (22) aufweist, wobei der Schrittmotor (21) an dem Gehäuse (1) befestigt ist und die Getriebewelle (22) zum Drehen antreibt, und der Schrittmotor (21) sich allmählich mit einem bestimmten Winkel dreht, und eine offene Schleife zur Steuerung eingerichtet ist, so dass eine präzise Steuerung von Position und Geschwindigkeit ohne ein Rückkopplungsgerät zur Erkennung von Ort und Geschwindigkeit ermöglicht wird;
    einen in der Kammer (11) angeordneten Einziehmechanismus (3), der eine Gewindestange (31) und eine mit der Gewindestange (31) versehene einziehbare Stange (32) umfasst, wobei die Gewindestange (31) von der Getriebewelle (22) angetrieben wird, um sich zu drehen, wodurch die einziehbare Stange (32) eine ausfahrende/einziehende Bewegung relativ zur Gewindestange (31) ausführen kann, und eine Außenwand der einziehbaren Stange (32) hervorstehend mit einer spiralförmigen Führungsschiene (321) oder einer linearen Führungsschiene (322) ausgebildet ist, wobei die Abdeckung (13) mit einem positionsbegrenzenden Schlitz (132) gebildet ist, der die spiralförmige Führungsschiene (321) oder die lineare Führungsschiene (322) aufnehmen kann, und einen Lautsprecher (4), der an einem Endabschnitt der einziehbaren Stange (32) befestigt ist und mit der einziehbaren Stange (32) bewegt wird.
  2. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug nach Anspruch 1, wobei das Antriebselement (2) weiterhin ein Übertragungsrad (23) aufweist, das auf der Übertragungswelle (22) aufgezogen ist und mit der Übertragungswelle (22) gedreht wird; wobei der Einziehmechanismus (3) ferner ein passives Zahnrad (33) aufweist, das mit einem Endabschnitt der Gewindestange (31) verbunden und mit der Gewindestange (31) verbunden ist, wodurch das Übertragungsrad (23) und das passive Zahnrad (33) für die Übertragung gegenseitig in Eingriff gebracht werden können.
  3. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug nach Anspruch 1, wobei das Antriebselement (2) weiterhin ein erstes Zahnrad (24), ein zweites Zahnrad (25) und eine Übertragungskette (26) aufweist; wobei das erste Zahnrad (24) auf der Getriebewelle (22) aufgezogen ist und mit der Getriebewelle (22) gedreht wird, wobei das zweite Zahnrad (25) mit einem Endabschnitt der Gewindestange (31) verbunden und mit der Gewindestange (31) verbunden ist, und die Übertragungskette (26) an einer Außenseite des ersten Zahnrads (24) und des zweiten Zahnrads (25) aufgezogen ist und mit dem ersten Zahnrad (24) und dem zweiten Zahnrad (24) in Eingriff steht.
  4. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug nach Anspruch 1, wobei das Antriebselement (2) weiterhin ein erstes Zahnrad (24), ein zweites Zahnrad (25) und einen Antriebsriemen (27) aufweist; wobei das erste Zahnrad (24) auf der Getriebewelle (22) aufgezogen ist und mit der Getriebewelle (22) gedreht wird, wobei das zweite Zahnrad (25) mit einem Endabschnitt der Gewindestange (31) verbunden und mit der Gewindestange (31) verbunden ist, und eine Innenwandung des Antriebsriemens (27) mit einem Innenzahnrad (271) gespannt ist, der Antriebsriemen (27) an einer Außenseite des ersten Zahnrads (24) und des zweiten Zahnrads (25) aufgezogen ist, und das Innenzahnrad (271) mit dem ersten Zahnrad (24) und dem zweiten Zahnrad (25) für die Übertragung gegenseitig in Eingriff steht.
  5. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug nach Anspruch 1, wobei das Antriebselement (2) weiterhin ein erstes passives Rad (28), ein zweites passives Rad (29) und einen Antriebsriemen (27') aufweist; wobei das erste passive Rad (28) auf der Getriebewelle (22) aufgezogen ist und mit der Getriebewelle (22) gedreht wird, wobei das zweite passive Rad (29) mit einem Endabschnitt der Gewindestange (31) verbunden und mit der Gewindestange (31) verbunden ist, und der Antriebsriemen (27') an einer Außenseite des ersten passiven Rads (28) und des zweiten passiven Rads (29) fest aufgezogen ist.
  6. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug nach Anspruch 1, wobei die Abdeckung (13) entsprechend mit der Basis (12) in Verbindung steht.
  7. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug nach Anspruch 6, wobei die Abdeckung (13) mit einem durchbohrten Loch (131) ausgebildet ist, ein Ende der Gewindestange (31) entsprechend der Basis (12) angeordnet ist und das andere Ende davon und die einziehbare Stange (32) beide entsprechend dem durchbohrten Loch (131) angeordnet sind.
  8. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug nach Anspruch 6, ferner mit einem Speicherzylinder (5), der an der Abdeckung (13) befestigt und entsprechend der einziehbaren Stange (32) angeordnet ist, so dass der Lautsprecher (4) in dem Speicherzylinder (5) gelagert oder aus diesem ausgefahren werden kann.
  9. Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug nach Anspruch 1, wobei die einziehbare Stange (32) mit einem Innengewinde-Segment ausgebildet ist, und die Gewindestange (31) mit der einziehbaren Stange (32) durch das Innengewinde-Segment hindurch angebracht werden kann.
EP14171726.4A 2014-06-10 2014-06-10 Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug Not-in-force EP2955933B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES14171726.4T ES2669118T3 (es) 2014-06-10 2014-06-10 Estructura de altavoz retráctil para uso en un vehículo
EP14171726.4A EP2955933B1 (de) 2014-06-10 2014-06-10 Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14171726.4A EP2955933B1 (de) 2014-06-10 2014-06-10 Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug

Publications (2)

Publication Number Publication Date
EP2955933A1 EP2955933A1 (de) 2015-12-16
EP2955933B1 true EP2955933B1 (de) 2018-04-18

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EP14171726.4A Not-in-force EP2955933B1 (de) 2014-06-10 2014-06-10 Einziehbare Lautsprecherstruktur zur Verwendung in einem Fahrzeug

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EP (1) EP2955933B1 (de)
ES (1) ES2669118T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109257472B (zh) * 2018-11-22 2024-03-22 江苏精研科技股份有限公司 一种伸缩装置及手机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5072345A (en) * 1990-02-20 1991-12-10 Goggia Steven J Pop-up landscape light
DE19534400A1 (de) * 1995-09-16 1997-03-20 Blaser Uwe Lautsprecheranordnung für Kraftfahrzeuge
DE10324640B3 (de) * 2003-05-28 2004-05-27 Reitter & Schefenacker Sound Gmbh Ausfahrbarer Lautsprecher
US7702123B2 (en) * 2004-02-20 2010-04-20 Bang & Olufsen A/S Loudspeaker assembly
DE102005008469B4 (de) * 2005-02-24 2008-12-18 Kuan-Wei Chen Elektronische Vorrichtung mit einer Einrichtung zum automatischen Heben und Senken
US7889505B1 (en) * 2006-10-28 2011-02-15 Beard Morris L Camouflage retractable media system
KR101619546B1 (ko) * 2010-11-24 2016-05-10 현대자동차주식회사 팝업트위터 스피커
KR20130034933A (ko) * 2011-09-29 2013-04-08 현대자동차주식회사 자동차의 팝업장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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ES2669118T3 (es) 2018-05-24
EP2955933A1 (de) 2015-12-16

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