US3855429A - Loudspeaker fixture - Google Patents

Loudspeaker fixture Download PDF

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Publication number
US3855429A
US3855429A US00348685A US34868573A US3855429A US 3855429 A US3855429 A US 3855429A US 00348685 A US00348685 A US 00348685A US 34868573 A US34868573 A US 34868573A US 3855429 A US3855429 A US 3855429A
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US
United States
Prior art keywords
loudspeaker
aperture
clamping plate
parts
fixture
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.)
Expired - Lifetime
Application number
US00348685A
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English (en)
Inventor
G Krainhofer
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.)
US Philips Corp
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
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Publication of US3855429A publication Critical patent/US3855429A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/18—Halogen atoms or nitro radicals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/08—Antiepileptics; Anticonvulsants
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/20—Oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/38—Nitrogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing three or more hetero rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
    • F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
    • F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
    • F16B5/065—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship the plates being one on top of the other and distanced from each other, e.g. by using protrusions to keep contact and distance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
    • F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
    • F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
    • F16B5/0664—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship at least one of the sheets or plates having integrally formed or integrally connected snap-in-features
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • 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
    • 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

Definitions

  • the invention relates to a loudspeaker fixture for mounting a loudspeaker to the rear of a loudspeaker baffle by means of a clamping plate which engages a fixing flange of the loudspeaker and which does not obstruct the loudspeaker aperture.
  • a known method is to attach the flange of the loudspeaker chassis to a rubber plate, which in turn is cemented to the loudspeaker baffle from the rear of the dashboard. Such attachment is simple, but does not permit removal of the rubber plate from the loudspeaker baffle without damaging the plate.
  • the clamping plate described in German Gebrauchsmuster 7131005 has been provided with hooks which grip around the loudspeaker chassis.
  • the loudspeaker is thus mounted to the clamping plate in a detachable manner, it is still necessary to cement the clamping plate to the loudspeaker baffle of a radio receiver for example.
  • the clamping plate consists of two parts which can be pivoted relative to each other, and one of which is secured to the loudspeaker chassis. Insertion hooks have been provided near those edges of the clamping plate parts which face away from the hinge, by means of which hooks said edges can be attached to the edges of the loudspeaker aperture. The distance between the hooks is slightly smaller than the distance between the associated clamping plate edges and the edges of the loudspeaker aperture respectively, so that when the bent clamping plate is depressed into the plane of the loudspeaker aperture the entire plate is tensioned between the hooks, thus securing the loudspeaker.
  • fixture clamping plates fixture clamping plates ready-made for a certain type of motor car are employed, and according to the type of apparatus the loudspeakers need merely be fixed onto these clamping plates.
  • the hooks whose openings face the edge of the loudspeaker aperture, are mounted on those edges of the clamping plate part which are facing away from the hinge.
  • the hooks can be readily slid onto the edges of the loudspeaker baffle. If the loudspeaker is subsequently pressed against this baffle, the hooks are forced apart and exert a tension on the opposite edges of the loudspeaker aperture. The loudspeaker can then only be removed from the loudspeaker baffle by pulling it off the baffle by force, so that the clamping plate bends after the dead point has been overcome and is detached from the loudspeaker baffle.
  • a latching spring has been provided at that edge of the pivoted part of the clamping plate which faces away from the hinge, which spring grips over the loudspeaker chassis when the clamping plate is depressed.
  • the hinge between the clamping plate parts that can be pivoted relative to each other is a film hinge constituted by a groove in the clamping plate.
  • the hinge extends in the direction of the minor axis of the ellipse. As a result. the hooks are spaced further apart, thus providing a reliable locking.
  • FIG. 1 shows a loudspeaker fixture according to the invention prior to mounting
  • FIG. 2 shows the loudspeaker fixture according to FIG. I in the mounted condition.
  • the drawing shows a sectional view of a dashboard 1 of a motorcar.
  • This dashboard 1 consists of a baffle 3 and a grille 5 covering the baffle.
  • a loudspeaker aperture 7 has been provided, which has an elliptical shape when loudspeaker 9 is also elliptical.
  • the aperture 7 may just as well be rectangular or polygonal, in accordance with the shape of the loudspeaker used. Aperture 7 is always adapted to match the chassis of the loudspeaker 9.”
  • the loudspeaker 9 to be mounted to baffle 3 may be attached to a first part 11' of a clamping plate 11 by means of screws.
  • a second part 11" of the clamping plate 11 is connected to the part 11' by means of a hinge or pivot joint 8.
  • This hinge is formed by a groove in the clamping plate 1 1, thus constituting a film hinge.
  • the hinge 8 extends in the direction of the minor axis of the ellipse.
  • the clamping plate may consist of a synthetic material or of tough presswood board.
  • hooks 17, 17' At those edges or remote ends 15 of the clamping plate parts 11' and 11" which face away from the hinge, hooks 17, 17' have been provided whose openings face towards the end edges 19, 19' of the loudspeaker aperture 7.
  • the hooks or engaging means 17, 17' are mounted on the side of clamping plate 11 which faces away from the loudspeaker chassis 9 and can be slid over the edges 19, 19' of the loudspeaker aperture 7.
  • the axial distance between the ends 18 of the hooks is slightly greater than the distance between the edges 19, 19' of the loudspeaker aperture.
  • a leafspring 21 On the pivoted clamping plate second part 11", a leafspring 21 has been fitted on the side facing the loudspeaker chassis 9.
  • a spring arm or securing means 23 of the leafspring 21 is capable of snapping over the flange 25 of the loudspeaker chassis 9 when clamping plate 11 is depressed.
  • the hook 17 is positioned on the edge 19.
  • the hook 17' is placed on the edge 19 in the pivoted condition or V- shaped and first orientation of the clamping plate.
  • the loudspeaker is pressed towards the baffle 3 in the direction of an arrow 27.
  • the clamping plate parts 11 and 11 are made to extend in one plane to a second, generally flat orientation and the hooks 17 and 17' engage behind the loudspeaker baffle 3.
  • the spring arm 23 snaps over the chassis flange 25.
  • the loudspeaker is secured to loudspeaker baffle 3 and can only be removed from said baffle when the spring arm 23 is withdrawn.
  • a loudspeaker fixture for mounting a loudspeaker to the rear ofa loudspeaker baffle by means of a clamping plate which engages with the fixing flange of the loudspeaker and which does not obstruct the loudspeaker aperture, characterized in that the clamping plate consists of two parts which can be pivoted relative to each other, and one of which is secured to the loudspeaker chassis, and that insertion hooks have been provided near those edges of the clamping plate parts which face away from the hinge, by means of which hooks said edges can be attached to the edges of the loudspeaker aperture, and that the axial distance between the hooks is slightly smaller than the distance between the associated clamping plate edges and the edges of the loudspeaker aperture respectively, so that when the bent clamping plate is depressed into the plane of the loudspeaker baffle the entire plate is compressed axially between the hooks, thus securing the loudspeaker.
  • Loudspeaker fixture is claimed in claim 1, characterized in that the hooks are mounted on the edges of the clamping plate parts facing away from the hinge in such a way that their openings face the edge of the loudspeaker aperture.
  • Loudspeaker fixture as claimed in claim 1 characterized in that a latching spring has been provided at the edge of the pivoted clamping plate part facing away from the hinge, which spring snaps over the loudspeaker chassis when the clamping plate is depressed.
  • Loudspeaker fixture as claimed in claim 1 characterized in that the hinge between the clamping plate parts which can be pivoted relative to each other is constituted by a film hinge formed by a groove in the clamping plate.
  • a fixture for mounting a loudspeaker to a loudspeaker baffle frame which has defined therein an aperture having sides and end edges and a predetermined length dimension between said end edges, the fixture comprising a clamping plate formed of first and second parts with a pivot joint between them and first and second ends of said parts remote from said joint, one of said plate parts adapted to having the loudspeaker securable thereto, said plate parts being pivotable between a first V-shape orientation with length between said ends being less than said length of the aperture, and a second generally flat orientation with length between said ends being greater than in said first orientation, and engaging means for engaging each of said ends to one of said end edges of the aperture, whereby when said loudspeaker is secured to one of said plate parts and said parts are pivoted to said first orientation, the speaker is mountable to said baffle by engaging via said engaging means the first plate part end to one of said end edges of the aperture, pivoting said parts to said second orientation, and then engaging the second plate part end to the remaining end edge of the aperture.
  • said engaging means comprises a hook on each of said plate part remote ends for engaging one of said end edges of the aperture.
  • said engaging means comprises a hook on each end edge of the aperture for engaging one of said plate part ends.
  • a fixture according to claim 6 further comprising securing means for releasably securing said loudspeaker to said second plate part when said parts are in said second orientation.
  • said securing means is a spring on said second plate part for engaging said loudspeaker.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Pain & Pain Management (AREA)
  • Neurology (AREA)
  • Neurosurgery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
US00348685A 1972-06-19 1973-04-06 Loudspeaker fixture Expired - Lifetime US3855429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2229679A DE2229679C3 (de) 1972-06-19 1972-06-19 Lautspreche rhalterung

Publications (1)

Publication Number Publication Date
US3855429A true US3855429A (en) 1974-12-17

Family

ID=5848049

Family Applications (1)

Application Number Title Priority Date Filing Date
US00348685A Expired - Lifetime US3855429A (en) 1972-06-19 1973-04-06 Loudspeaker fixture

Country Status (15)

Country Link
US (1) US3855429A (ja)
JP (1) JPS5123906B2 (ja)
AT (1) AT317321B (ja)
AU (1) AU470209B2 (ja)
BE (1) BE801086A (ja)
CA (1) CA969870A (ja)
CH (1) CH557125A (ja)
DE (1) DE2229679C3 (ja)
ES (1) ES415974A1 (ja)
FR (1) FR2189971B1 (ja)
GB (1) GB1393827A (ja)
IT (1) IT992415B (ja)
NL (1) NL162283C (ja)
SE (1) SE378732B (ja)
ZA (1) ZA73808B (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633972A (en) * 1985-09-03 1987-01-06 General Motors Corporation Speaker retainer
US20090279733A1 (en) * 2008-05-09 2009-11-12 Michael Schuster Speaker assembly arrangement for a vehicle and method of mounting a speaker
US20090279732A1 (en) * 2008-05-07 2009-11-12 Three Amigos LLC Speaker assembly with directional adjustability
CN101112880B (zh) * 2006-07-28 2010-04-14 佛山市顺德区顺达电脑厂有限公司 车用电子模块
CN113490116A (zh) * 2021-06-03 2021-10-08 嘉善意莱声电子有限公司 一种防水型扬声器振膜以及扬声器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2165637A (en) * 1937-03-06 1939-07-11 Gen Motors Corp Roof speaker mounting
US3369784A (en) * 1966-01-12 1968-02-20 Motorola Inc Mounting assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575370A (en) * 1969-08-29 1971-04-20 Philco Ford Corp Snap-in mounting for loudspeakers and the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2165637A (en) * 1937-03-06 1939-07-11 Gen Motors Corp Roof speaker mounting
US3369784A (en) * 1966-01-12 1968-02-20 Motorola Inc Mounting assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633972A (en) * 1985-09-03 1987-01-06 General Motors Corporation Speaker retainer
CN101112880B (zh) * 2006-07-28 2010-04-14 佛山市顺德区顺达电脑厂有限公司 车用电子模块
US20090279732A1 (en) * 2008-05-07 2009-11-12 Three Amigos LLC Speaker assembly with directional adjustability
US8229155B2 (en) * 2008-05-07 2012-07-24 Three Amigos LLC Speaker assembly with directional adjustability
US20090279733A1 (en) * 2008-05-09 2009-11-12 Michael Schuster Speaker assembly arrangement for a vehicle and method of mounting a speaker
US8139783B2 (en) * 2008-05-09 2012-03-20 Harman Becker Automotive Systems Gmbh Speaker assembly arrangement for a vehicle and method of mounting a speaker
CN113490116A (zh) * 2021-06-03 2021-10-08 嘉善意莱声电子有限公司 一种防水型扬声器振膜以及扬声器

Also Published As

Publication number Publication date
CH557125A (de) 1974-12-13
JPS5123906B2 (ja) 1976-07-20
FR2189971A1 (ja) 1974-01-25
GB1393827A (en) 1975-05-14
ES415974A1 (es) 1976-02-16
BE801086A (fr) 1973-12-18
AT317321B (de) 1974-08-26
SE378732B (ja) 1975-09-08
DE2229679A1 (de) 1974-01-17
AU5698173A (en) 1974-12-19
AU470209B2 (en) 1976-03-04
NL162283C (nl) 1980-04-15
DE2229679B2 (de) 1974-07-25
DE2229679C3 (de) 1975-03-06
ZA73808B (en) 1974-09-25
NL7308319A (ja) 1973-12-21
NL162283B (nl) 1979-11-15
ATA528274A (de) 1975-01-15
IT992415B (it) 1975-09-10
CA969870A (en) 1975-06-24
FR2189971B1 (ja) 1976-09-17
JPS4957828A (ja) 1974-06-05

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