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EP2840804A1 - Haut-parleur et procédé de montage d'un haut-parleur - Google Patents

Haut-parleur et procédé de montage d'un haut-parleur Download PDF

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Publication number
EP2840804A1
EP2840804A1 EP13181410.5A EP13181410A EP2840804A1 EP 2840804 A1 EP2840804 A1 EP 2840804A1 EP 13181410 A EP13181410 A EP 13181410A EP 2840804 A1 EP2840804 A1 EP 2840804A1
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
chassis
locking
locking element
radial
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.)
Withdrawn
Application number
EP13181410.5A
Other languages
German (de)
English (en)
Inventor
Garry Taylor
Steven Williams
Kevin Hughes
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.)
Harman International Industries Ltd
Original Assignee
Harman International Industries 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 Harman International Industries Ltd filed Critical Harman International Industries Ltd
Priority to EP13181410.5A priority Critical patent/EP2840804A1/fr
Publication of EP2840804A1 publication Critical patent/EP2840804A1/fr
Withdrawn legal-status Critical Current

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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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/22—Clamping rim of diaphragm or cone against seating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts

Definitions

  • Various embodiments relate to a loudspeaker and to methods for assembling a loudspeaker.
  • loudspeakers include a diaphragm or cone which is caused to vibrate by the movement of a voice coil connected to the cone.
  • Typical loudspeakers comprise a rigid diaphragm with a flexible surround, also called flexible suspension.
  • This flexible suspension is provided along the perimeter of the diaphragm to facilitate axial displacement of the diaphragm relative to the basket or chassis of the loudspeaker.
  • the suspension is generally cemented along its internal perimeter to the diaphragm and along its external perimeter to the chassis of the loudspeaker.
  • the flexible suspension is typically joined to the loudspeaker chassis with an adhesive.
  • Gluing the surround to the chassis is a permanent fix and makes rework or recycling of the parts very difficult. Gluing the parts also requires highly controlled dispensing equipment, needing maintenance and consumables.
  • a loudspeaker comprising a diaphragm, a loudspeaker chassis and a flexible suspension which is connected at its internal perimeter to the diaphragm and which is connected at its external perimeter to the loudspeaker chassis.
  • the flexible suspension comprises at its external perimeter a locking protrusion extending in a radial direction of the loudspeaker.
  • the loudspeaker furthermore comprises a locking element which cooperates with the locking protrusion in an assembled state of the loudspeaker in such a way that the locking element removably fixes the flexible suspension to the chassis and prevents the locking protrusion of the flexible suspension from moving in an axial and radial direction.
  • the flexible suspension can be attached to the chassis without adhesive. This facilitates the removal and the reworking of the parts without damage to the different parts, as a pure mechanical connection is obtained. This furthermore removes the need for adhesive and sophisticated glue dispensing equipment.
  • the flexible suspension may comprise in the radial direction to the outside of the loudspeaker a radial extending section following by the locking protrusion.
  • the locking protrusion can have a larger extension in the radial direction than the radial extension.
  • the locking protrusion located at a greater external perimeter than the radial extending section provides an abutment surface which abuts against the locking element.
  • a locking element has the corresponding surface against which the locking protrusion abuts.
  • the locking element is part of a locking ring attached to the front part of the loudspeaker chassis.
  • This locking ring may be connected to the loudspeaker chassis using threaded parts provided on each of the locking ring and the loudspeaker chassis.
  • the locking ring may be releasably connected to the chassis using further locking components provided on each of the locking ring and the chassis which cooperate to secure the locking ring to the chassis.
  • the locking ring may be clipped onto the chassis.
  • the locking element may also provide a mounting surface for a gasket that may be mounted to the front side of the loudspeaker.
  • the locking element may alone or together with the chassis provide a surface on which the gasket may be provided and secured to the chassis.
  • the loudspeaker may be designed in such a way that in one embodiment the locking element is designed in such a way that it fixes the flexible suspension to the chassis by an axial movement of the locking element relative to the chassis. However, in another embodiment it is also possible that the locking element fixes the flexible suspension to the chassis by a radial movement of the suspension until the locking protrusion is fixedly connected to the chassis.
  • the locking element may contain in the radial direction to the outside of the loudspeaker a radial extending portion followed by a recess into which the locking protrusion can extend.
  • the radial extending section of the flexible suspension is sandwiched between the chassis and the radial extending portion of the locking element to hold the suspension down on the chassis during an axial movement of the suspension which occurs when the loudspeaker operates.
  • the recess in the locking element provides a chamber to the locking protrusion and the flexible suspension is held in place with the locking protrusion being located in the recess.
  • the locking element comprises a locking arm which cooperates with the axial extending locking protrusion in such a way that the locking arm prevents the locking protrusion from moving at least in the radial direction.
  • the locking arm may comprise a locking nose which immobilizes the locking protrusion.
  • the locking arm may extend in the radial direction to the centre of the loudspeaker. Together with the chassis the locking arm can build a chamber in which the locking protrusion is located and which prevents the locking protrusion from moving in the axial direction.
  • the locking element with the locking arm may be integrally formed with the chassis; however, in another embodiment the locking element with the locking arm may also be a separate element, e.g. part of a locking ring that is releasably connected to the chassis.
  • a method for assembling a loudspeaker comprising the diaphragm, the loudspeaker chassis and the flexible suspension.
  • a radial outer end of the flexible suspension is positioned on the loudspeaker chassis, wherein the flexible suspension comprises in the radial direction to the outside of the loudspeaker a radial extending section followed by a locking protrusion which extends in an axial direction of the loudspeaker with a larger extension in the axial direction than the radial extension.
  • the locking element is positioned in an axial direction onto the radial extending section of the flexible suspension.
  • the flexible suspension is securely fixed to the chassis by an axial movement of the locking element relative to the chassis so that the locking element prevents the locking protrusion from moving in the radial and axial direction.
  • the axial movement may be obtained by screwing the locking element onto the chassis or by clicking it onto the chassis.
  • the locking protrusion is pushed into the outer axial direction of the loudspeaker until the locking protrusion is secured to the chassis by the locking arm, the locking arm again preventing the locking protrusion from moving at least in the radial direction.
  • the locking element may furthermore be connected to the chassis, e.g. using a click mechanism provided on the chassis and on a locking element.
  • the locking element may be connected to the chassis either with the locking protrusion already being secured by the locking arm or without the locking protrusion being secured by the locking arm, i.e. before the locking protrusion is pushed in the outer axial direction and secured to the locking element.
  • a loudspeaker 10 is partially shown, which in the embodiment shown may be a woofer.
  • the loudspeaker comprises a diaphragm 20 which is connected to a chassis or basket 30 via a flexible suspension 40.
  • the flexible suspension 40 is connected and fixed to the chassis 30 using an axial movement of a locking element 50 relative to the chassis 30. With axial movement a movement in direction of the axis A of the loudspeaker is meant.
  • the locking element 50 may be part of a locking ring which is provided on the whole perimeter of the chassis. However, it should be understood that the locking element or locking ring needs not necessarily be provided along the whole perimeter of the chassis.
  • the chassis comprises a horizontal portion 31 followed by a vertical portion 32 as seen in a radial direction r of the loudspeaker.
  • the vertical portion can comprise at its inner surface a threaded portion 33, e.g. a female thread.
  • the locking element in the embodiment shown the locking ring, may comprise at its outer radial surface 51 a threaded portion 52 which cooperates with the threaded portion 33 to connect the locking ring to the chassis 30.
  • the locking element is substantially L-shaped with a radial extending portion 53 and an axially extending portion 54 on which the threaded portion 52 is provided.
  • the radial extending portion 53 of the locking element comprises a recess 55 which can receive a locking protrusion 41 provided at the outer radial end of the flexible suspension.
  • the locking protrusion 41 extends into the recess 55.
  • the radial extending portion 53 immobilizes the outer end of the flexible suspension, it provides a retaining strength in the axial direction when the diaphragm 20 not shown in Fig. 2 moves in the axial direction.
  • This movement is inter alia guided by the convex part 42 of the suspension.
  • a radial extending section 43 is followed by the axially extending locking protrusion 41.
  • the locking protrusion extends into the front direction of the loudspeaker, the front direction indicating the direction to which the sound is emitted. It should be understood that the locking protrusion extending in the axial direction may also extend to the rear side of the loudspeaker. In this embodiment the chassis would contain a recess into which the locking protrusion would extend. In this embodiment the locking element 50 would not contain the recess 55. In still another embodiment the axially extending locking protrusion may extend in the front direction and the rear direction with the recess being provided in the locking element and the chassis to accommodate the different locking protrusions extending to the front and to the rear side of the loudspeaker.
  • the locking element 50 may at its front end furthermore contain a radially extending surface 55 which provides a support surface for a gasket 60 which may be fixed to the outer surface of the axially extending portion 55.
  • the loudspeaker 10 is a combined loudspeaker comprising a woofer and a tweeter 60 which is supported by the locking ring 50.
  • the suspension 400 also comprises a radial extending section 430 and an axially extending locking protrusion 410.
  • the locking protrusion 410 is compared to the locking protrusion 41 of the embodiment described in connection with Figs. 1-4 , it can be seen that the locking protrusion has a greater dimension in the axial direction and in the radial direction. This is due to the fact that the locking protrusion is responsible for attaching the suspension to the chassis.
  • the chassis 300 comprises a radially extending section 310 and an axially extending section 320. Furthermore, a radially inward extending locking arm 330 is provided comprising a locking nose 340.
  • the flexible suspension is pushed into place radially by accommodating the locking protrusion 410 in a chamber 350, the chamber being built by the radially extending section 310, the axially extending section 320, the locking arm 330 and the locking nose 340.
  • the locking nose 340 prevents the locking protrusion from moving axially back to the centre of the loudspeaker.
  • the locking protrusion 410 completely fills chamber 350 so that the locking protrusion is immobilized in the chamber 350.
  • the chassis here the components 310, 320, 330 and 340 also provide a retaining strength in the axial direction which is needed to keep the suspension in its place when the diaphragm 20 moves during operation.
  • a gasket 60 is attached to the upper surface of the locking arm 330.
  • a further embodiment is shown.
  • the connection between the suspension 400 and the chassis corresponds to the embodiment described above in connection with Figs. 5 and 6 .
  • the locking arm is part of a separate locking ring 500 which is connected to the chassis 600.
  • the chassis and the locking ring comprise each locking components such as the recess 510 and the locking arm 610 with the protrusion 620. These locking components 510, 610 and 620 cooperate and help to secure the locking ring to the chassis, e.g. by clipping the locking ring 500 into place on the chassis 600.
  • the locking ring 500 may comprise a lead-in 520 to more easily accommodate the locking ring 500 in the corresponding section of the chassis 600.
  • the locking ring is shown in the connected state.
  • a chassis 700 which again provides a chamber for accommodating the axially extending locking protrusion 410 including a locking nose 710 which provides a support surface for the radial inner surface of the locking protrusion 410.
  • the chassis at its front part, furthermore contains severally radially extending sections 720 and 730. These radially extending sections 720 and 730 form an integral waveguide for the acoustic waves irradiated by the loudspeaker (Question to the inventor: Is this correct and can you add further details for this embodiment of the integral waveguide?)
  • the flexible suspension can be made of rubber which has a flexibility that allows the deformation of the suspension and which allows it to be manoeuvred into the locked position, especially for the embodiments disclosed in connection with Figs. 5-9 .
  • a radial force is applied to disengage the flexible suspension from the chassis.
  • the flexibility is also needed in the embodiments described in connection with Figs. 1-4 , as the locking protrusion has to be located at the outer end of the chassis so that the locking protrusion can extend into the recess of the locking element.
  • the above-described embodiments have the advantage that no adhesive is required for assembling the loudspeaker together. As a result, the rework or the recycling is easier. Furthermore, the locking element or locking ring can act as a support surface to mount a front gasket or it can act as an integral waveguide or auxiliary component mounted, e.g. for a tweeter carrier as shown in Fig. 4 .

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
EP13181410.5A 2013-08-22 2013-08-22 Haut-parleur et procédé de montage d'un haut-parleur Withdrawn EP2840804A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13181410.5A EP2840804A1 (fr) 2013-08-22 2013-08-22 Haut-parleur et procédé de montage d'un haut-parleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13181410.5A EP2840804A1 (fr) 2013-08-22 2013-08-22 Haut-parleur et procédé de montage d'un haut-parleur

Publications (1)

Publication Number Publication Date
EP2840804A1 true EP2840804A1 (fr) 2015-02-25

Family

ID=49000870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13181410.5A Withdrawn EP2840804A1 (fr) 2013-08-22 2013-08-22 Haut-parleur et procédé de montage d'un haut-parleur

Country Status (1)

Country Link
EP (1) EP2840804A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3182726A1 (fr) * 2015-12-17 2017-06-21 Delphi Technologies, Inc. Dispositif d'emission sonore
GB2626085A (en) * 2022-12-30 2024-07-10 Tymphany Hk Ltd Vibration module, speaker having the same, and manufacturing method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892289A (en) * 1973-07-02 1975-07-01 William L Rollins Loudspeaker
US20050180590A1 (en) * 2004-02-18 2005-08-18 Jl Audio, Inc. Loudspeaker with field replaceable parts and method of assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892289A (en) * 1973-07-02 1975-07-01 William L Rollins Loudspeaker
US20050180590A1 (en) * 2004-02-18 2005-08-18 Jl Audio, Inc. Loudspeaker with field replaceable parts and method of assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3182726A1 (fr) * 2015-12-17 2017-06-21 Delphi Technologies, Inc. Dispositif d'emission sonore
FR3046005A1 (fr) * 2015-12-17 2017-06-23 Delphi Tech Inc Dispositif d'emission sonore
GB2626085A (en) * 2022-12-30 2024-07-10 Tymphany Hk Ltd Vibration module, speaker having the same, and manufacturing method thereof
GB2626085B (en) * 2022-12-30 2025-01-08 Tymphany Hk Ltd Vibration module, speaker having the same, and manufacturing method thereof

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