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NO752097L - - Google Patents

Info

Publication number
NO752097L
NO752097L NO752097A NO752097A NO752097L NO 752097 L NO752097 L NO 752097L NO 752097 A NO752097 A NO 752097A NO 752097 A NO752097 A NO 752097A NO 752097 L NO752097 L NO 752097L
Authority
NO
Norway
Prior art keywords
strips
grid
loudspeaker
sound screen
speaker
Prior art date
Application number
NO752097A
Other languages
Norwegian (no)
Inventor
G Kuhfus
Original Assignee
Northern Electric Co
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 Northern Electric Co filed Critical Northern Electric Co
Publication of NO752097L publication Critical patent/NO752097L/no

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023Screens for loudspeakers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/302Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47Joining single elements to sheets, plates or other substantially flat surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Telephone Set Structure (AREA)

Description

Høyttalergitter.Speaker grill.

Oppfinnelsen angår et høyttalergitter som i første rekke men ikke utelukkende er beregnet på telefonapparater som ikke krever noen håridmikrotelefon fordi høyttaler og mikrofon er innebygget i-apparatets kappe. The invention relates to a speaker grill which is primarily but not exclusively intended for telephone devices that do not require a hair-mounted microphone because the speaker and microphone are built into the device's casing.

Et høyttalergitter har flere funksjoner. Den primære funksjon er riktignok å tillate lyd å passere ut fra høyttaleren, men da gitteret også danner en synlig del av apparatets kappe må det være estetisk tiltalende. Det ideelle høyttalergitter bør fra formgivningssynspunkt være en integrerende del av kappen, ikke virke forstyrrende og for d=t tredje hindre at uvedkommende gjenstander kan passere gitteret. Det er også fordel-aktig å la gitteret omfattende en større flate enn selve høyt-taleren, slik at det utenfra ikke kan fastslås hvor denne befinner seg. A speaker grille has several functions. The primary function is indeed to allow sound to pass out of the speaker, but as the grille also forms a visible part of the device's casing, it must be aesthetically pleasing. From a design point of view, the ideal speaker grille should be an integral part of the casing, not be disruptive and, thirdly, prevent extraneous objects from passing through the grille. It is also advantageous to let the grid cover a larger area than the loudspeaker itself, so that it cannot be determined from the outside where it is located.

Et høyttalergitter ifølge oppfinnelsen er utformetA loudspeaker grille according to the invention has been designed

med en apparatkappe og har form av et antall parallelle lister på hvis innside er festet en lydskjerm med en åpning for høyt-taleren, hvilke lister i profil har hovedsakelig form av en Z med en øvre og nedre flans som er forbundet med et steg, slik at det mellom listene dannes renneformede spor som strekker seg gjennom hele gitterets tykkelse og er innbyrdes forskutt slik at direkte opptisk sikt mellom listene i en retning vinkelrett på gitterets plan forhindres. with an apparatus casing and is in the form of a number of parallel strips on the inside of which is attached a sound screen with an opening for the loudspeaker, which strips in profile are mainly in the shape of a Z with an upper and lower flange connected by a step, as that channel-shaped grooves are formed between the slats which extend through the entire thickness of the grating and are mutually offset so that direct optical sight between the slats in a direction perpendicular to the plane of the grating is prevented.

Fortrinnsvis strekker tynne flenser seg langs listenes innside for å lette lydskjermens fastsveising til listene. Preferably, thin flanges extend along the inside of the strips to facilitate the sound screen's welding to the strips.

Et utførelseseksempel på oppfinnelsen skal nedenfor beskrives nærmere under henvisning til tegningene. Fig. 1 viser et grunnriss av apparatets kappe med gitteret. Fig. 2 og 3 viser snitt langs linjene II-II resp. An embodiment of the invention will be described in more detail below with reference to the drawings. Fig. 1 shows a plan of the device's casing with the grid. Fig. 2 and 3 show sections along the lines II-II resp.

III-III på fig. 1.III-III in fig. 1.

Fig. 4 viser i større målestokk et delvis snitt gjennom gitteret som antydet med en sirkel A på fig. 3. Fig. 4 shows on a larger scale a partial section through the grid as indicated by a circle A in fig. 3.

Fig. 5 viser kappen på fig. 1 sett fra baksiden.Fig. 5 shows the cover of fig. 1 set from the back.

Fig. 1 viser en hovedsakelig parallellepipedisk kappe 10 som ved den ene kortside er forsynt med et høyttalergitter Fig. 1 shows a mainly parallelepiped shell 10 which is provided with a loudspeaker grille on one short side

11. Dette består av et antall parallelle lister 12 som strekker seg i kappens lengderetning. Fig. 2 viser at ved kappens begge kortsider hvor sideveggene 13 og 14 ikke vinkelrett over 11. This consists of a number of parallel strips 12 which extend in the longitudinal direction of the jacket. Fig. 2 shows that on both short sides of the jacket where the side walls 13 and 14 are not perpendicular to

i kappens overside men heller nedover og utover. Listene 12 strekker seg i dette tilfelle delvis nedover en del av sideveggene 13. Som det fremgår av fig. 2 danner listene en enhet med selve kappen hvor 16 betegner endene av mellomrommene melbm listene. På baksiden av listene er anordnet en lydskjerm 17. on the upper side of the coat but rather downwards and outwards. In this case, the strips 12 extend partially down part of the side walls 13. As can be seen from fig. 2, the slats form a unit with the sheath itself where 16 denotes the ends of the spaces between the slats. A sound screen 17 is arranged on the back of the strips.

Fig. 3 viser lydskjermen 17 i anlegg mot gitteret 11. Lydskjermen er fortrinnsvis fastsveiset til listene slik at disse forsterker. I lydskjermen er an åpning 18 for høyttaleren som vist pi fig. 5. Åpningens kant er på fig. 2 og 3 betegnet med 19. Fig. 3 shows the sound screen 17 in contact with the grid 11. The sound screen is preferably welded to the slats so that they reinforce. In the sound screen is an opening 18 for the speaker as shown in fig. 5. The edge of the opening is in fig. 2 and 3 denoted by 19.

Listene 12 har en bestemt profil som hindrer direkte innsikt igjennom gitteret såvel vinkelrett på kappens 15 overside som i et stort vinkelområde på hver side av normalen. Listenes profil fremgår best av fig, 4 og har hovedsakelig Z-profil med en øvre og nedre flens 21 resp. 22 som er forbundet med et kort steg 23, Hver list er skilt fra nabolistene ved et rom 24 og 25 som strekker seg hovedsakelig vinkelrett på gitterets plan og er forskutt sideveis slik at ingen rettlinjet fasasje oppstår mellom gitterets to sider. I stedet oppnås en kroket passasje. Ifølge utførelseseksemplet har det ytre rom 24 hovedsakelig parallelle negrensningsvegger 26 og 27 mens de indre rom 25 har sidevegger 28 og 29 som divergerer noe i retning mot gitterets sentalplan. I dette tilfelle har som vist den ene vegg 28 noe større helningsvinkel enn den andre. The strips 12 have a specific profile which prevents direct insight through the grating both perpendicularly to the upper side of the cover 15 and in a large angular range on either side of the normal. The profile of the strips is best seen in fig, 4 and mainly has a Z-profile with an upper and lower flange 21 or 22 which is connected by a short step 23, Each strip is separated from the neighboring strips by a space 24 and 25 which extends mainly perpendicular to the plane of the grid and is offset laterally so that no rectilinear facade occurs between the two sides of the grid. Instead, a crooked passage is achieved. According to the design example, the outer space 24 has mainly parallel black cleaning walls 26 and 27, while the inner spaces 25 have side walls 28 and 29 which diverge somewhat in the direction towards the central plane of the grating. In this case, as shown, one wall 28 has a slightly greater angle of inclination than the other.

De to rom går over i hverandre kangs en grenseflate som er markert med en streket linje 30 og som i foreliggende tilfelle utgjør en hovedsakelig rettlinjet fortsettelse av veggenes 26 og 29. Veggene 27 og 28 derimot er ikke plane men omfatter buede partier. Betegnelsen 31 viser denne overgang. The two rooms merge into each other through a boundary surface which is marked with a dashed line 30 and which in the present case constitutes a mainly rectilinear continuation of the walls 26 and 29. The walls 27 and 28, on the other hand, are not flat but comprise curved sections. The designation 31 shows this transition.

De renneformede rom 24 og 25 har en bredde som er av-hengig av den nødvendige overlappingsgrad for forskjellige para- metere. Hvis listene ligger alt for nær hverandre hindres lydbølgenes frie passasje men for stor avstand muliggjør både at uvedkommende gjenstander kan trenge inn samtidig som apparatets utseende blir mindre heldig. The channel-shaped spaces 24 and 25 have a width that depends on the required degree of overlap for various parameters. If the slats are too close to each other, the free passage of the sound waves is prevented, but too great a distance makes it possible both for extraneous objects to penetrate and at the same time to make the appearance of the appliance less fortunate.

Pig. 4 viser lydskjermens 17 anbringelse. Denne bør som ovenfor nevnt fastsveises til listene 12 f.eks. ved ultra-lydsveising. Por å lette sveiseoperasjonene har hver list på undersiden en i tverrsnitt rektangulær flens 32 hvis topp-punkt ligger an mot lydskjermen og letter overføringen fra den ved sveisingen tilførte energi. Lydskjermen 17 består fortrinnsvis av mørkt, fortrinnsvis sort materiale.'Når høyt-taleren er montert i kappen 10 er det umulig utenfra og fastslå høyttalerens beliggenhet i forhold til gitteret som har nøy-aktig samme utseende på hele sin overflate. Pig. 4 shows the placement of the sound screen 17. As mentioned above, this should be welded to the strips 12, e.g. in ultra-sonic welding. In order to facilitate the welding operations, each strip on the underside has a rectangular flange 32 in cross-section, the top point of which abuts the sound screen and facilitates the transfer of the energy supplied during welding. The sound shield 17 preferably consists of dark, preferably black material. When the loudspeaker is mounted in the casing 10, it is impossible to determine from the outside the position of the loudspeaker in relation to the grid, which has exactly the same appearance on its entire surface.

Gitteret med tilhørende lydskjerm får en meget tiltalende utseende. Selve gitteret er sterkt og beskytter høyt-taleren mot skade utenfra. Kappen og gitteret fremstilles lett ved sprøytestøpning. Hvis ingen lydskjerm anvendes og hvis mellomrommene mellom listene bare befinner seg der hvor høyt-taleren befinner seg, vil dette bety en komplisert støping hvis ikke høyttalerens beliggenhet skal tre frem. The grille with the associated sound screen takes on a very appealing appearance. The grid itself is strong and protects the loudspeaker from damage from the outside. The cover and the grid are easily produced by injection molding. If no sound shield is used and if the spaces between the strips are only located where the loudspeaker is located, this will mean a complicated molding if the loudspeaker's location is not to be highlighted.

Hvis kappen 10 består av et hvitt materiale og hvis mellomrommene mellom listene bare befant seg rett foran høyt-taleren, ville det hvite materiale bli synlig mellom listene uten der hvor høyttaleren befinner seg som vil synes. s\art. Det samme gjelder for andre farger med unnatagelse av svart og meget mørke farger, En måte å unngå at denne farge blir synlig mellom listene er å utføre støpningen i to operasjoner. Da kan gitteret fremstilles med mellomrom mellom samtlige lister som beskrevet ovenfor hvorefter mellomrommene delvis fylles ut med et svart materiale nemlig der hvor høyttaleren ikke befinner seg. Dette er imidlertid en kostbar og tidkrevende metode fordi en ekstra støpeform er nødvendig. Takket være lydskjermen 17 unn-gås alle disse vanskeligheter samtidig som det oppnås en av-stivning av gitterlistene, Et gitter ifølge oppfinnelsen kan anvendes for mange andre apparater enn telefoner, f.eks. radio-mottaker og andre telekommunikasjonsapparater. If the sheath 10 consists of a white material and if the spaces between the strips were only located directly in front of the loudspeaker, the white material would be visible between the strips without where the speaker is located being visible. species The same applies to other colors with the exception of black and very dark colors. One way to avoid this color becoming visible between the strips is to carry out the molding in two operations. Then the grid can be made with spaces between all the strips as described above, after which the spaces are partially filled with a black material, namely where the speaker is not located. However, this is an expensive and time-consuming method because an additional mold is required. Thanks to the sound screen 17, all these difficulties are avoided while at the same time a stiffening of the grating strips is achieved. A grating according to the invention can be used for many devices other than telephones, e.g. radio receiver and other telecommunications devices.

Claims (2)

1.. Høyttalergitter, karakterisert ved at det er utformet-i en apparatkappe og har form av et antall parallelle lister (12) på hvis innside er festet en lydskjerm (17) med en åpning (18) for høyttaleren, hvilke lister (12) i profil har hovedsakelig form av en Z med en øvre og nedre flens (21. ,22) som er forbundet med et steg (23), slik at det mellom listene (12) dannes renneformede rom (24,25) som strekker seg gjennom hele gitterets tykkelse og er innbyrdes forskutt, slik at direkte optisk sikt mellom listene i en retning vinkelrett på gitterets (11) plan forhindres.1.. Loudspeaker grille, characterized in that it is designed-in an apparatus casing and has the form of a number of parallel strips (12) on the inside of which is attached a sound screen (17) with an opening (18) for the speaker, which strips (12) in profile mainly has the shape of a Z with an upper and lower flange (21. ,22) which is connected by a step (23), so that between the strips (12) channel-shaped spaces (24,25) are formed which extend through the entire thickness of the grid and are mutually offset, so that direct optical sight between the strips in a direction perpendicular to the plane of the grid (11) is prevented. 2. Høyttalergitter ifølge krav 1, karakterisert ved at tynne flenser (32) strekker seg langs listenes (12) innside for å lette lydskjermens (17) fastsveising til listene.2. Loudspeaker grille according to claim 1, characterized in that thin flanges (32) extend along the inside of the strips (12) to facilitate the welding of the sound screen (17) to the strips.
NO752097A 1974-06-21 1975-06-12 NO752097L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA203,106A CA992875A (en) 1974-06-21 1974-06-21 Speaker grills

Publications (1)

Publication Number Publication Date
NO752097L true NO752097L (en) 1975-12-23

Family

ID=4100464

Family Applications (1)

Application Number Title Priority Date Filing Date
NO752097A NO752097L (en) 1974-06-21 1975-06-12

Country Status (13)

Country Link
JP (1) JPS5113508A (en)
BE (1) BE830491A (en)
CA (1) CA992875A (en)
DE (1) DE2527542A1 (en)
DK (1) DK277775A (en)
ES (1) ES213321Y (en)
FR (1) FR2275955A1 (en)
GB (1) GB1473047A (en)
IE (1) IE41565B1 (en)
IT (1) IT1039191B (en)
NL (1) NL165023B (en)
NO (1) NO752097L (en)
SE (1) SE7507132L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5699127A (en) * 1979-12-29 1981-08-10 Electroplating Eng Of Japan Co Automatic plating device
DE9113951U1 (en) * 1991-11-09 1992-01-02 Metalpraecis Berchem + Schaberg Gesellschaft für Metallformgebung mbH, 4650 Gelsenkirchen Shut-off device for installation in a pipeline carrying a hot flowing medium
JP2010114806A (en) * 2008-11-10 2010-05-20 Toppan Printing Co Ltd Speaker grill and manufacturing method thereof, and speaker with which the speaker grill is additionally provided
CN111328002B (en) * 2018-12-17 2024-06-11 海湾安全技术有限公司 Alarm and sound device

Also Published As

Publication number Publication date
JPS5113508A (en) 1976-02-03
CA992875A (en) 1976-07-13
SE7507132L (en) 1975-12-22
IE41565L (en) 1975-12-21
FR2275955A1 (en) 1976-01-16
NL7507377A (en) 1975-12-23
DE2527542A1 (en) 1976-01-08
GB1473047A (en) 1977-05-11
BE830491A (en) 1975-10-16
ES213321Y (en) 1976-11-01
ES213321U (en) 1976-06-16
IT1039191B (en) 1979-12-10
DK277775A (en) 1975-12-22
NL165023B (en) 1980-09-15
IE41565B1 (en) 1980-01-30

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