NO803740L

NO803740L - INNBYGNINGSHUS.

Info

Publication number: NO803740L
Application number: NO803740A
Authority: NO
Inventors: Theo Friedrich; Kurt Henneberger; Hans-Juergen Woernlein
Original assignee: Bbc Brown Boveri & Cie
Priority date: 1979-12-12
Filing date: 1980-12-11
Publication date: 1981-06-15

Description

| Oppfinnelsen vedrorer et instrumenthus, især for måle-.og re7| The invention relates to an instrument housing, especially for measuring and measuring

iguleringsinstrumenter, f. eks. for et elektrisk måleinstru- — i igulation instruments, e.g. for an electrical measuring instru- — i

ment, med en anleggsflate på forsiden for nedsenket befesti-igelse i en frontplate, samt med en frontramme med rettvink-|let profil,, eller med en påkneppbar frontramme med innsatt ; intended, with a contact surface on the front for submerged fastening in a front plate, as well as with a front frame with a right-angled profile,, or with a snap-on front frame with an insert;

1 i |dekkskive. !Instrumenthus av nevnte type benyttes f. eks» i stort omfangj .i forbindelse med kontroll, f. eks. for befestigelse av ver-j ;ne-, styre-, måle- og varslingsanlegg i en kontrolltavle 'som, er nodvendig ved drift av transformator- koplingsanlegg, i 1 in |cover disk. Instrument housings of the aforementioned type are used, for example, on a large scale in connection with control, e.g. for fixing protection, control, measurement and warning systems in a control panel, which is necessary for the operation of transformer switching systems, in

.kraftverk og lignende anlegg..power plants and similar facilities.

i De deler som er anbrakt i instrumenthuset og er spenningsf6-j •rende under drift, må være beskyttet mot utilsiktet beroring. Dessuten må det hindres at stov eller vann trenger inn i i instrumenthusets indre. Instrumenthuset bor derfor svare 'til: tysk standard 40050. Det er kjent instrumenthus, hvor frontrammen festes ved<v>hjelp av et klebemiddel.. i The parts that are placed in the instrument housing and are live during operation must be protected against accidental contact. In addition, it must be prevented that dust or water penetrates into the interior of the instrument housing. The instrument housing must therefore correspond to: German standard 40050. It is a known instrument housing, where the front frame is attached using an adhesive..

Det er videre kjent å feste frontrammen på instrumenthuset ved hjelp av en tappforbindelse i tillegg til et klebemiddel. It is also known to attach the front frame to the instrument housing by means of a pin connection in addition to an adhesive.

De ovennevnte forholdsregler viser seg å være kostbare og omTstendalige. - Således kan frontrammen ikke demonteres fra instrumenthuset uten odeleggelser. The above precautions prove to be expensive and temporary. - Thus, the front frame cannot be dismantled from the instrument housing without disassembly.

Det er også kjent instrumenthus, hvor frontrammen festes ved hjelp av skruer. Dette trekk viser seg å være forholdsvis kostbart og omstendelig,, There are also known instrument housings, where the front frame is attached by means of screws. This move turns out to be relatively expensive and cumbersome,,

Dessuten er det kjent å feste frontrammen direkte i inngrep med instrumenthusets forside. I denne forbindelse fremkommer inngrepsorganer med svært små dimensjoner, slik at det må an-,ordnes forholdsvis mange inngrepsorganer på frontrammen for at denne skal kunne festes godt til huset. Det blir derfor forholdsvis omstendelig å losne frontrammen fra instrumenthuset. It is also known to attach the front frame directly in engagement with the front of the instrument housing. In this connection, engagement members with very small dimensions appear, so that a relatively large number of engagement members must be arranged on the front frame in order for it to be securely attached to the housing. It therefore becomes relatively laborious to detach the front frame from the instrument housing.

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Til grunn- for oppfinnelsen ligger den oppgave å tilveiebringe et instrumenthus med en frontramme, som gir sikker be7_skyttelse mot tilfeldig beroring av de deler som er tilgjen-| Igelige fra fronten og driftsmessig står under spenning, samtidig som frontrammen er avtagbar for inspeksjon m.v. The invention is based on the task of providing an instrument housing with a front frame, which provides safe protection against accidental touching of the parts that are available. Leeches from the front and in terms of operation are under tension, while the front frame is removable for inspection etc.

1 i Oppfinnelsen går videre ut på å tilveiebringe et instrument-;hus for måle- og reguleringsinstrumenter med en frontramme, I 'som lett kan kneppes på instrumenthuset og som også lettj kah fjernes fra huset når dette ikke er montert, mens frontram- \ 1 i The invention further consists in providing an instrument housing for measuring and regulating instruments with a front frame, which can be easily snapped onto the instrument housing and which can also be easily removed from the housing when this is not mounted, while the front frame

men av sikkerhetsgrunner ikke kan losnes fra huset når dette er installert. | but for safety reasons cannot be detached from the housing once this has been installed. |

<!>Disse oppgaver loses ifolge oppfinnelsen på den måte som:er I i angitt i de etterfolgende krav. i <!>These tasks are solved according to the invention in the manner indicated in the following claims. in

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<1>i De fordeler som oppnås ved hjelp av oppfinnelsen ligger spe-sielt i det forhold at frontrammen kan produseres på en meget enkel måte og samtidig viser alle vesentlige trekk, slik at forutsetningene, som beroringsvern, vern mot inntrengning av -stov og fuktighet i huset, oppfylles. <1>i The advantages achieved by means of the invention lie particularly in the fact that the front frame can be produced in a very simple way and at the same time shows all essential features, so that the prerequisites, such as contact protection, protection against the ingress of dust and moisture in the house, is fulfilled.

Ytterligere fordeler som oppnås ved oppfinnelsen ligger spe-.sielt i at inngrepsorganene utformes på frontrammen og instrumenthuset ved sproytestoping samtidig som delene fremstil-les og at mekanisk låsing av frontrammen mot losning når instrumenthuset er installert oppnås på en enkel måte ved at inngrepsforbindelsen er opprettet innenfor instrumenthusets ytre kontur og ved installert hus er beliggende bak frontplaten. Further advantages achieved by the invention lie especially in the fact that the engagement means are formed on the front frame and the instrument housing by spray stopping at the same time as the parts are manufactured and that mechanical locking of the front frame against loosening when the instrument housing is installed is achieved in a simple way by the engagement connection being created within the outer contour of the instrument housing and when the housing is installed is located behind the front plate.

Ved den nedsenkede anordning av frontrammen i anlegget, hindres dessuten at stov kan trenge inn i instrumenthuset. - -LJoen utfor el seseksempler av oppfinnelsen er vist i tegningen og vil bli nærmere omtalt nedenfor. Fig. 1 viser et frontriss av et instrumenthus med påsatt j !frontramme/ delvis vist i snitt»i Fig. 2 viser et detaljert snitt i plan II-II av instrument-i huset ifolge fig. 1. i i .Fig. 3 viser et detaljert snitt i plan III-III av instrumenthuset ifolge fig. 1. Fig. 4 viser baksiden av frontrammen. J j i i1<1>i The submerged arrangement of the front frame in the system also prevents dust from penetrating the instrument housing. - -The way in which examples of the invention are carried out are shown in the drawing and will be discussed in more detail below. Fig. 1 shows a front view of an instrument housing with attached j !front frame/ partly shown in section»i Fig. 2 shows a detailed section in plane II-II of the instrument housing according to fig. 1. i i .Fig. 3 shows a detailed section in plane III-III of the instrument housing according to fig. 1. Fig. 4 shows the back of the front frame. J j i i1<1>i

Fig.. 5 er et sideriss av frontrammen.Fig. 5 is a side view of the front frame.

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Fig. 6 viser et frontriss av instrumenthuset uten frontram- : i i ' Fig. 6 shows a front view of the instrument housing without front frame

Fig* 7 er et lengdesnitt gjennom instrumenthuset ifolge fig. 6 i plan VTI-VTI, med en frontramme vist i sideriss. Fig* 7 is a longitudinal section through the instrument housing according to fig. 6 in plan VTI-VTI, with a front frame shown in side view.

I fig. 1 sees et frontriss av et instrumenthus 1 for et elektrisk måleinstrument med påsatt frontramme 2, og et partielt snitt viser frontrammens anordning på huset mer detaljert. .Instrumenthuset er i front forsynt med en anleggsflate 3 for nedsenket befestigelse i en frontplate. Instrumenthusets 1 'anleggsflate 3 er på forsiden forsynt med et rundtlopende steg 4. På sidene foreligger uttagninger 5 i anleggsflatens underkant. In fig. 1 shows a front view of an instrument housing 1 for an electrical measuring instrument with attached front frame 2, and a partial section shows the arrangement of the front frame on the housing in more detail. .The instrument housing is provided at the front with a contact surface 3 for submerged fastening in a front plate. The mounting surface 3 of the instrument housing 1 is provided on the front with a circular step 4. On the sides there are recesses 5 in the lower edge of the mounting surface.

Instrumenthuset 1 og frontrammen 2 er fremstilt ved sproytestoping av termoplast. Frontrammen har et rettvinklet profil og er på innsiden i en grenende forsynt med inngrepsknaster 6. På innsiden av den andre gren er det dessuten anordnet The instrument housing 1 and the front frame 2 are produced by injection molding of thermoplastic. The front frame has a right-angled profile and is provided on the inside of one branch end with engaging lugs 6. On the inside of the other branch there is also arranged

steg 7, som danner' et spor 8 sammen med motstående gren av frontrammen. step 7, which forms a groove 8 together with the opposite branch of the front frame.

wNår,frontrammen 2 kneppes på instrumenthuset 1, vil inn- - grepsknastene 6 på frontrammen 2 forst gli inn i lommeformede uttagninger 9, som er anordnet på siden av anlegget 3, og ,til slutt gripe inn i uttagningene 5 i instrumenthuset. Hu- ; sets rundtlopende steg 4 befinner seg nå i frontrammens 2 wWhen the front frame 2 is buttoned onto the instrument housing 1, the engagement lugs 6 on the front frame 2 will first slide into pocket-shaped recesses 9, which are arranged on the side of the device 3, and finally engage the recesses 5 in the instrument housing. Hu- ; set's circular step 4 is now located in the front frame's 2

, spor 8 og hindrer at frontrammen kan loftes til side fra:hu-, track 8 and prevents the front frame from being lifted aside from:hu-

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!set. Med den andre gren, som er vulstformet i den frie ende, — presser den påsatte frontrammen mot en dekkskive 12 for ins-J 'trumenthuset. Den vulstformede konstruksjon virker som en i !set. With the other branch, which is bead-shaped at the free end, the attached front frame presses against a cover disk 12 for the instrument housing. The bead-shaped construction works like an i

'tetningsleppe, som tetter husets indre mot stov og fuktighet. ;Det nodvendige mekaniske trykk av tetningsleppen mot dekk-! skiven 12 oppnås ved hjelp av materialspenning hhv. elastii-,sitet. 'sealing lip, which seals the interior of the house against dust and moisture. ;The necessary mechanical pressure of the sealing lip against the tyre-! the disk 12 is obtained by means of material tension or elastic site.

! ; i i ' Utsparingene 13, som er anordnet på endene av grenene 17,18 i ! ; i i ' The recesses 13, which are arranged on the ends of the branches 17,18 i

i frontrammens 2 hjorner korresponderer ved påsatt frontramme med tilsvarende ansatser på anlegget 3. in the front frame's 2 corners correspond when the front frame is attached with corresponding abutments on the system 3.

Under dekkskiven 12 foreligger et skalablad 16 for et måleinstrument, og mellom disse deler er det anordnet en ramme 10. -II Under the cover disc 12 there is a scale blade 16 for a measuring instrument, and between these parts a frame 10 is arranged. -II

Instrumenthuset 19 og frontrammen 20 som er vist i fig. 6 og 7 er fremstilt- av plast ved sproytestoping. The instrument housing 19 and the front frame 20 shown in fig. 6 and 7 are made of plastic by injection molding.

^Instrumenthuset 19 er for nedsenket befestigelse i en frontplate 22 forsynt med et anlegg 21 på forsiden. I anlegget er;det anordnet to åpninger 25, som munner i et spor 26 i hu-gets overflate, dannet ved profilinnsnevring av huset på dette sted. I hvert spor 26 foreligger en tverrgående inn-grepsknast 27. ^The instrument housing 19 is for submerged attachment in a front plate 22 provided with a device 21 on the front. In the facility, two openings 25 are arranged, which open into a groove 26 in the surface of the housing, formed by profile narrowing of the housing at this location. In each groove 26 there is a transverse engagement cam 27.

Frontrammen 20 er på baksiden forsynt med to motstående inngrepstunger 24. Når frontrammen 20 skal kneppes fast på instrumenthuset 19, griper inngrepstungene 24 gjennom åpningen 25 i anlegget 21 og går til slutt i inngrep med inngrepsknastene 27. Inngrepstungene 24 befinner seg i sporet 26 og dermed innenfor instrumenthusets 19 ytre kontur. ...instrumenthusets 19 anlegg 21 er på forsiden forsynt med ;en uttagning 23, slik at frontrammen i påsatt tilstand er nedsenket i anlegget 21. The front frame 20 is provided at the rear with two opposing engagement tongues 24. When the front frame 20 is to be fastened to the instrument housing 19, the engagement tongues 24 engage through the opening 25 in the device 21 and finally engage with the engagement cams 27. The engagement tongues 24 are located in the groove 26 and thus within the instrument housing's 19 outer contour. ...the instrument housing 19's facility 21 is provided on the front side with a recess 23, so that the front frame is immersed in the facility 21 when fitted.

i Innsiden av frontrammen 20 kan være utstyrt med ytterligere, i The inside of the front frame 20 can be equipped with additional,

ikke nærmere viste inngrepsorganer for befestigelse av kom-! ponenter.1- no further shown intervention means for attaching the com-! ponents.1-

~Tilkoplingskontaktene i instrumenthusets 19 bakvegg er ikke j !nærmere vist, men bare antydet ved områder som begrenses;med ~ The connection contacts in the rear wall of the instrument housing 19 are not shown in more detail, but only indicated in areas that are limited by

strek-punkt-streker.dash-dot-dashes.

'De to diagonalt motstående boringene 28 i hjornene av anleg-! ; get 21 skal oppta en gjenge bolt, ved hjelp av hvilken en< ik-j .ke nærmere vist klemanordning betjenes for befestigelse av instrumenthuset 19 i frontplaten 22. The two diagonally opposite bores 28 in the corners of the installation! ; gate 21 is to accommodate a threaded bolt, by means of which a clamping device shown in more detail is operated for fastening the instrument housing 19 in the front plate 22.

Claims

_1. Instrument housing, especially for measuring and regulating instruments, e.g. an electrical measuring instrument, but a mounting plate on the front for recessed fastening in a front plate and with a front frame with a right-angled profile or a snap-on front frame with a fitted cover plate, charac-. characterized by the fact that the front frame (2;20) has engagement cams j (6) or engagement tongues (24) within its outer contour, and j either that the contact surface (3) on the side of its lower edge has recesses (5), in which the engagement cams (6) engage in, where the front frame in the engagement state ends in the same plane as the contact surface, or that the engagement tongues (24) engage with the engagement cams (27) which are arranged within the outer contour of the instrument housing (19), where the engagement in the installed state j is arranged behind the front plate (22), seen from the front.

2. Instrument housing as stated in claim 1, characterized in that the contact surface (3) on the front has a circular step (4), that on the inside of the front frame there is

—provided groove (8), where the circular step engages, so that the assembled front frame (2) is locked to the side.

3. Instrument housing as stated in claim 2, characterized in that the grooves (8) are designed by means of a step (7) which is arranged against the branch (17) of the front frame (2).

4. Instrument housing as specified in claim 3, characterized in that the engagement lugs (6) on the front frame (2) for the engagement slide into pocket-shaped recesses (9) which are placed on the side of the contact surface (3).

5. Instrument housing as specified in claim 4, characterized in that the pocket-shaped recesses (9) are formed

— ^ed-.-lateral displacement of the step (4) inwards.

6. Instrument housing as specified in claim 5, characterized in that the side-shifted pair of steps (4.1) acts as a mounting point and for centering the tire

.the plate (12).

7. Instrument housing as stated in one of the claims 1-6, characterized in that the free ends of the branches (17,18) in the corners of the front frame (2) have a recess (13), which, when the front frame is attached, corresponds with the corresponding; abutments on the construction surface (3).

8. Instrument housing as specified in one of the claims 1-7, characterized in that. the contact edge (14) of the front frame (2) on the cover plate (12) has a bead shape.

9. Instrument housing as stated in one of claims 1-8, characterized in that the front frame (2) in mon-| ;tert state with its bead-shaped contact edge (14) is in !an- <;> against the cover plate (12) under mechanical pressure.

10. Instrument housing as stated in claim 1, character-. characterized by the fact that the front frame (20) has opposite, standing engagement tongues (24) on its circumference, that openings (25) are arranged in the contact surface (21), through which the engagement tongues (24)

grippers, and that the engagement tongues engage with engagement cams (27) which are located on the outside of the instrument housing.

.11. Instrument housing as specified in claim 1, characterized in that the engagement tongues are arranged in the front frame (20) in such a way that they engage with engagement lugs arranged on the inside of the instrument housing and that they can be brought into engagement via an opening in the housing wall.

12. Instrument housing as specified in one of claims 1-3, characterized in that the ground frame (20) is arranged submerged in the construction surface (21).