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EP0508150B1 - Haut-parleur avec un élément joignant la suspension et le joint (à encastrer) - Google Patents

Haut-parleur avec un élément joignant la suspension et le joint (à encastrer) Download PDF

Info

Publication number
EP0508150B1
EP0508150B1 EP92104342A EP92104342A EP0508150B1 EP 0508150 B1 EP0508150 B1 EP 0508150B1 EP 92104342 A EP92104342 A EP 92104342A EP 92104342 A EP92104342 A EP 92104342A EP 0508150 B1 EP0508150 B1 EP 0508150B1
Authority
EP
European Patent Office
Prior art keywords
component
bead
upper tool
foam material
seal
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
EP92104342A
Other languages
German (de)
English (en)
Other versions
EP0508150A3 (en
EP0508150A2 (fr
Inventor
Jörg Prokisch
Emil Tauber
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.)
Nokia Deutschland GmbH
Original Assignee
Nokia Deutschland GmbH
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 Nokia Deutschland GmbH filed Critical Nokia Deutschland GmbH
Publication of EP0508150A2 publication Critical patent/EP0508150A2/fr
Publication of EP0508150A3 publication Critical patent/EP0508150A3/de
Application granted granted Critical
Publication of EP0508150B1 publication Critical patent/EP0508150B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • 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

Definitions

  • the invention relates to a loudspeaker, the membranes of which are connected to the housing basket by means of a bead, this speaker has a (built-in) seal on the side facing the installation wall, and the bead and seal are designed as a one-piece component.
  • these seals are made of felt, cardboard or non-compressed foam and as sealing rings glued to the end of the loudspeaker which faces the installation wall.
  • this training has the disadvantage that the sealing ring must be glued to the loudspeaker in a separate step.
  • it is also necessary to maintain a high level of precision when gluing in the sealing ring, in order to ensure that excess adhesive does not wet the bead or the bead area.
  • This component (13) shown in FIG. 1 has, in addition to the bead (15), a raised bead (32) adjoining it on the outside. This bead (32) then takes over the overall sealing of the loudspeaker when this loudspeaker is connected to the built-in rear wall.
  • this one-piece design of the bead-seal combination avoids the disadvantages mentioned above, it is considered disadvantageous that these components (13) cannot be produced from foam pressed under the influence of heat, but only from rubber. This is particularly disadvantageous because the components (13) made of compressed foam have the well-known advantages over the components (13) made of rubber.
  • the invention is therefore based on the object of specifying a further bead and seal uniting one-piece component which, at least in the area of the bead, has the good properties of pressed foam.
  • a further object of the invention is to specify a method for producing a component that unifies a bead and seal.
  • the first-mentioned object is achieved in that the bead and seal uniting one-piece component is formed from foam and that this component has, in addition to a section intended to rest on the upstanding edge, a section running longitudinally to the pressing direction and formed from drawn-in foam.
  • the second-mentioned object is achieved in that when lowering the upper tool onto the still unpressed and resting on the lower tool, a sawtooth-shaped circular ring presses on the foam at the bottom of the upper tool and at a distance from the center of the upper tool this moves into the hollow-shaped lower tool when the upper tool is lowered further.
  • the length of the section or the length of the edge is such that, at least in the case of a negatively formed bead, the maximum lifting height of the system does not exceed the length of the section or edge, this has the advantage that when using components according to the invention, the geometry already finished speaker covers do not need to be changed to avoid the membrane bumping against the cover.
  • FIG. 2 A first exemplary embodiment is illustrated in FIG. 2.
  • the housing basket 10 has a circumference with a raised edge 11 at its upper end.
  • the cone-shaped membrane 12 of the loudspeaker is connected at the end, which has the larger of the two diameters, by means of a one-piece component 13 made of pressed foam 24.
  • This component 13 - viewed from the inside to the outside - has a bevel 14, an adjoining approximately semicircular bead 15, a pad 16 adjoining the bead 15, running at right angles to the center line of the loudspeaker, and a further region to be explained in more detail below.
  • the bevel 14 is glued to the membrane 12 and the support 16 to the projection 17 of the housing basket 10. This causes the bead 15 to span the space between the membrane 12 and the housing basket 10 in the region of the projection 17.
  • the section 18 of the component 13 adjoins the support 16 on the outside. This section 18 forms an angle of approximately 90 ° with the support 16 and, because the support 16 extends close to the upstanding edge 11, extends along the latter.
  • the end of the component 13 is formed by a section 19 which adjoins the section 18 to the outside and forms an angle of approximately 90 ° with the cutout 18. This section 19 lies on the upstanding edge 11 and is glued to it there. If a loudspeaker of the type shown in FIG. 2 is placed behind a built-in wall and connected to it, the raised edge 11 presses against the built-in wall.
  • the section 19 of the component 13 resting on the upstanding edge takes on the task of an (installation) seal 20 between housing basket 10 and built-in rear wall.
  • the bead 15 and seal 20 uniting component 13 is a molded part made of compressed foam 24.
  • FIG. 3 differs from the exemplary embodiment according to FIG. 2 only in that the bead 15 has been made negative.
  • a negatively formed bead 15 is understood to mean a bead whose curvature faces the base region 21.
  • Figure 3 further shows that the loudspeaker illustrated there can easily be accommodated under a flat loudspeaker cover, because despite the use of compressed foam 24, the height of section 18 is still so high that the maximum of the negatively formed bead 15 permissible lifting height of the system does not exceed the height of section 18.
  • FIGS. 4a to 4c illustrate a manufacturing method for a component 13 designed according to the invention with a section arranged longitudinally to the pressing direction P.
  • the lower tool 22 lying on a table has a hollow-shaped depression 23.
  • the recess 23 is covered by a foam sheet 24.
  • the edge 25 of the lower tool 22 and the edge 26 of the foam sheet 24 are aligned.
  • the upper tool 27 is arranged above the lower tool 22. This tool 27 can be moved in the vertical direction (indicated by the arrow). The units that ensure the mobility of the upper tool have been omitted for reasons of clarity.
  • the upper tool 27 is designed such that when it is lowered into the lower tool 22, an intermediate space 28 (see FIG. 4c) remains between the two tools 22, 27, which essentially corresponds to the later shape of the component 13.
  • the upper tool 27 has two saw-toothed circular rings 29, 30. In addition to the tasks to be discussed further below, these circular rings 29, 30 have the task of maintaining a distance corresponding to the thickness of the component 13 between the two tools 22, 27 in the retracted state.
  • FIG. 4b in comparison to FIG. 4a, the upper tool 27 has moved closer to the lower tool 26.
  • This drawing-in process is also illustrated by the fact that in FIG. 4b the edge 25 of the foam sheet 24 is shifted to the right compared to FIG. 4a.
  • the upper tool 27 is completely lowered onto the lower tool 22. It can be clearly seen that the upper tool 27 with the two circular rings 29, 30 rests on the lower tool 22.
  • the component 13 is formed from compressed foam 24.
  • reference numeral 14 stands for the slope
  • reference numeral 15 for the bead
  • reference numeral 16 for the support
  • reference numeral 18 for the section
  • reference numeral 19 for the section. Since the heights of the sawtooth-shaped circular rings 29, 30 are dimensioned such that they correspond to the height of the component 13 at the respective arrangement point, it is ensured that the component 13 is punched out of the foam sheet 24 with the pressing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Claims (4)

  1. Haut-parleur
    - comprenant un saladier (10) qui présente à son extrémité supérieure un rebord (11) circulaire et surélevé, et
    - une pièce (13) d'un seul tenant réunissant une suspension (15) et un joint (20),
    caractérisé par le fait
    - que la pièce (13) d'un seul tenant réunissant la suspension (15) et le joint (20) est constituée d'un produit alvéolaire compressé
    - que la pièce (13) d'un seul tenant comporte, outre un tronçon (19) destiné à prendre appui sur le bord (11) surélevé, une partie (18) qui s'étend à peu près le long de la direction de compression et est formée de produit alvéolaire (24) rétréci.
  2. Haut-parleur selon la revendication 1,
    caractérisé par le fait
    que la longueur de la partie (18) de la pièce (13) et la longueur du rebord (11) surélevé sont dimensionnées de telle sorte que les longueurs dépassent à peine la hauteur de levée maximale du système, au moins avec une suspension (15) négative.
  3. Procédé de fabrication d'une pièce (13) d'un seul tenant réunissant la suspension (15) et le joint (encastré) (20) à partir d'un produit alvéolaire (24) comprimé à chaud entre deux outils, d'un haut-parleur selon la revendication 1,
    caractérisé par le fait
    que lorsque l'outil supérieur (27) est abaissé sur le produit alvéolaire (24) pas encore compressé qui repose sur l'outil inférieur (22), un anneau de cercle (29) réalisé en dent de scie sur le fond de l'outil supérieur (27) et à distance du centre de l'outil supérieur (27), exerce une pression sur le produit alvéolaire (24) et le fait rentrer dans l'outil inférieur (22) réalisé en forme de moule creux lorsque l'outil supérieur (27) continue à descendre.
  4. Procédé selon la revendication 3,
    caractérisé par le fait que
    la pièce (13) est, dès sa compression, séparée de la plaque de produit alvéolaire (24) du fait que l'anneau de cercle (29) réalisé en dent de scie est disposé à un endroit de l'outil supérieur (27) qui correspond à la limite intérieure de la pièce (13) finie, qu'un autre anneau de cercle (30) également réalisé en dent de scie est disposé à un endroit de l'outil supérieur (27) qui correspond à la limite extérieure de la pièce finie et que chaque anneau de cercle (29, 30) a une hauteur qui est très légèrement supérieure à la hauteur de la pièce (13) finie à l'endroit où chacun des anneaux de cercle (29, 30) est agencé.
EP92104342A 1991-04-11 1992-03-13 Haut-parleur avec un élément joignant la suspension et le joint (à encastrer) Expired - Lifetime EP0508150B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4111748 1991-04-11
DE4111748A DE4111748A1 (de) 1991-04-11 1991-04-11 Lautsprecher mit sicke und (einbauab-) dichtung vereinigenden bauteil

Publications (3)

Publication Number Publication Date
EP0508150A2 EP0508150A2 (fr) 1992-10-14
EP0508150A3 EP0508150A3 (en) 1993-07-14
EP0508150B1 true EP0508150B1 (fr) 1995-05-31

Family

ID=6429314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92104342A Expired - Lifetime EP0508150B1 (fr) 1991-04-11 1992-03-13 Haut-parleur avec un élément joignant la suspension et le joint (à encastrer)

Country Status (7)

Country Link
EP (1) EP0508150B1 (fr)
JP (1) JPH05268695A (fr)
CZ (1) CZ280916B6 (fr)
DE (2) DE4111748A1 (fr)
ES (1) ES2075504T3 (fr)
HU (1) HU214426B (fr)
PL (1) PL168258B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217194A1 (de) * 1992-05-23 1993-11-25 Nokia Deutschland Gmbh Lautsprechersicke mit Bedämpfungslippe
US6332508B1 (en) * 1997-03-12 2001-12-25 Siegfried Schriever Loudspeaker and method for producing the same
DE19957938A1 (de) † 1999-12-01 2001-06-07 Reitter & Schefenacker Gmbh Halter für einen Lautsprecher zum Einbau in Kraftfahrzeuge sowie Verfahren zu dessen Herstellung
EP2798858A1 (fr) * 2011-12-29 2014-11-05 GETTOP Europe R&D ApS Fixation sans adhésif d'un élément de suspension de transducteur
KR102256411B1 (ko) 2019-01-03 2021-05-27 주식회사 이엠텍 고 수압 방수 마이크로스피커
DE102019208660A1 (de) * 2019-06-13 2020-12-17 Volkswagen Aktiengesellschaft Dämpfungseinrichtung und Lautsprecherdämpfungssystem für ein Kraftfahrzeug
CN111918198B (zh) * 2020-07-06 2022-03-01 瑞声新能源发展(常州)有限公司科教城分公司 振膜成型工艺

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE209935C (fr) *
DE79511C (de) * O. MÜHLHAUSEN, Hannover Vorrichtung zum Oeffnen und Schliefsen von Backofenthüren
DE1164493B (de) * 1960-06-21 1964-03-05 Sennheiser Electronic Membran fuer elektroakustische Wandler
AT274080B (de) * 1967-07-05 1969-09-10 Philips Nv Schallwandler mit einer Schaumstoffmembran
US3858680A (en) * 1971-05-28 1975-01-07 Matsushita Electric Ind Co Ltd Vibration diaphragm and cfne edge of a loudspeaker
GB1442468A (en) * 1973-07-02 1976-07-14 Sony Corp Loudspeakers
JPS5351154Y2 (fr) * 1973-07-02 1978-12-07
DE2827515A1 (de) * 1978-06-23 1980-01-10 Saba Gmbh Sickenring fuer lautsprecher
JPS58184900A (ja) * 1982-04-21 1983-10-28 Matsushita Electric Ind Co Ltd スピ−カ用振動板エツジの製造法
DE3703840A1 (de) * 1987-02-07 1988-08-18 Electronic Werke Deutschland Lautsprecher
DE3620889A1 (de) * 1986-06-21 1987-12-23 Electronic Werke Deutschland Lautsprecher
DE3831867A1 (de) * 1988-09-20 1990-03-29 Nokia Unterhaltungselektronik Membran mit sicke

Also Published As

Publication number Publication date
ES2075504T3 (es) 1995-10-01
CZ280916B6 (cs) 1996-05-15
DE4111748A1 (de) 1992-10-15
PL294130A1 (en) 1993-01-11
EP0508150A3 (en) 1993-07-14
DE59202382D1 (de) 1995-07-06
HU214426B (hu) 1998-03-30
HUT60880A (en) 1992-10-28
HU9200846D0 (en) 1992-05-28
JPH05268695A (ja) 1993-10-15
PL168258B1 (pl) 1996-01-31
CS97992A3 (en) 1992-10-14
EP0508150A2 (fr) 1992-10-14

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