HRP970670A2

HRP970670A2 - Covering cap

Info

Publication number: HRP970670A2
Application number: HR29621332.2A
Authority: HR
Inventors: Manfred Schaefer
Original assignee: Manfred Schaefer
Priority date: 1996-12-09
Filing date: 1997-12-08
Publication date: 1998-06-30
Also published as: DE29621332U1; HRP970670B1; WO1998026473A1; EP0941560B1; ATE199994T1; EP0941560A1; DE59703199D1

Abstract

The invention concerns an outer casing (1) for covering in a shockproof manner a terminal stud (5), which projects out of a lead-in insulator (3) and conducts voltage when operational, and at least one terminal (7) mounted on said terminal stud (5). The invention achieves the object of simplifying the earthing facility whilst taking account of safety, in that a removable cap (17) is disposed on the outer casing (1).

Description

Izum se odnosi na pokrivnu kapu prema uvodnom dijelu prvog patentnog zahtjeva, koja se upotrebljava posebno za transformatore energetskih razdjelnih mreža. The invention relates to a cover cap according to the introductory part of the first patent claim, which is used especially for transformers of power distribution networks.

Za pokrivanje transformatorskih priključnih svornjaka i na njima pričvršćenih priključnih stezaljki ranije su se upotrebljavali stezni pokrovi, koji su se postupkom skupljanja postavljali tijesno na priključne stezaljke i na priključne svornjake i potpuno su pokrivali obadva dijela. Skidanje steznog pokrova bilo je mukotrpno i za posljedicu je imalo uništenje steznog pokrova. To cover the transformer connection studs and the connection clamps attached to them, clamping covers were previously used, which were placed tightly on the connection clamps and on the connection studs by the shrinking process and completely covered both parts. Removing the clamping cover was laborious and resulted in the destruction of the clamping cover.

Iz DE 83 13 944 Ul i DE 94 09 218 Ul poznate su pokrivne kape koje se mogu elastično deformirati i skinuti. U montiranom stanju konture pokrivne kape i dodatni spojni vijci sprečavaju njeno skidanje. Kod pokrivnih kapa te vrste nedostatak je to da se one moraju skidati zbog uzemljenja, što je vremenski skupo i nije moguće nikakvo trajno uzemljenje. Zadatak predloženog izuma je stoga pojednostavniti mogućnost uzemljenja, pri čemu se mora uzeti u obzir sigurnost. From DE 83 13 944 Ul and DE 94 09 218 Ul, cover caps are known which can be elastically deformed and removed. In the assembled state, the contours of the cover cap and additional connecting screws prevent its removal. With cover caps of this type, the disadvantage is that they have to be removed for grounding, which is time-consuming and no permanent grounding is possible. The task of the proposed invention is therefore to simplify the possibility of grounding, where safety must be taken into account.

Taj zadatak riješen je s pokrivnom kapom u skladu sa značajkama prvog patentnog zahtjeva. This task is solved with a cover cap according to the features of the first patent claim.

S pokrivnom kapom na koju je stavljena kapa koja se može skinuti, postiže se s jedne strane to da su pokriveni su zaštićeni od dodira priključni svornjaci i priključne stezaljke, koje su skrivene ispod pokrivne kape. S druge strane kapa koja se može skinuti omogućuje to da se dijelovi, skriveni ispod pokrivne kape, uzemlje bez većih troškova pomoću otvora pokrivenog s kapom. With a cover cap on which a removable cap is placed, it is achieved on the one hand that the connection pins and connection clamps, which are hidden under the cover cap, are covered and protected from contact. On the other hand, the removable cap allows the parts, hidden under the cover cap, to be earthed without much cost using the hole covered by the cap.

Uzemljenje se pojednostavljuje time da je na priključni svornjak stavljen svornjak za uzemljenje koji jasno strši van preko priključne stezaljke. Taj svornjak za uzemljenje strši barem djelomično preko pokrivne kape i u normalnom stanju pokriven je s kapom. Ako se kapu skine, tada je svornjak za uzemljenje lako dostupan, čime se značajno pojednostavljuje učvršćenje naprave za uzemljenje. Grounding is simplified by placing a grounding pin on the connection pin, which clearly protrudes through the connection clamp. This ground stud protrudes at least partially through the cover cap and is normally covered by the cap. If the cap is removed, then the earthing bolt is easily accessible, which greatly simplifies the fixing of the earthing device.

Posebno prednosno je, ako je kapa učvršćena na pokrivnoj kapi tako da se može zakrenuti. To se vrši ponajprije pomoću zglobova. Time da je kapa povezana s pokrivnom kapom, ona se ne može izgubiti tijekom uzemljenja. Suprotno tome, kapa koja se može zataknuti ima tu prednost da ona omogućuje optimalan pristup k svornjaku za uzemljenje. Optimalnu sigurnost protiv neovlaštenog otvaranja kape pruža učvršćenje, pri čemu je za otvaranje kape potreban ključ ili alat. Na taj način neovlaštenima je uglavnom sigurno spriječeno otvaranje. It is particularly advantageous if the cap is fixed on the cover cap so that it can be rotated. This is primarily done using the joints. Since the cap is connected to the cover cap, it cannot be lost during grounding. Conversely, a snap-on cap has the advantage of allowing optimal access to the ground stud. Optimum security against unauthorized opening of the cap is provided by the fastening, where a key or tool is required to open the cap. In this way, unauthorized persons are generally prevented from opening.

Jednakim oblikom krajnjeg područja kape i svornjaka za uzemljenje, na kapu se može nataknuti napravu za uzemljenje (odnosno priključak za uzemljenje dotične naprave) pri normalnom radu, pri čemu se on uvijek može upotrijebiti. Ako se kapu otvara s ključem ili alatom, kao takav alat za otvaranje može se upotrijebiti napravu za uzemljenje jednakog oblika krajnjeg područja. Kuglasti oblik omogućuje optimalan električni kontakt izmedu svornjaka za uzemljenje i naprave za uzemljenje. Međutim, krajnje područje također može imati, primjerice, prstenasti oblik ili oblik slova T. With the same shape of the end area of the cap and the grounding bolt, a grounding device (ie the grounding connection of the device in question) can be attached to the cap during normal operation, whereby it can always be used. If the cap is opened with a key or tool, a grounding device of the same shape of the end area can be used as such opening tool. The spherical shape enables optimal electrical contact between the grounding stud and the grounding device. However, the end region can also have, for example, a ring shape or a T shape.

Pokrivna kapa može biti izrađena jednodijelno postupkom uranjanja. Međutim pokrivna kapa se također može sastojati od dviju poluljuski izrađenih postupkom injekcijskog prešanja. Taj način izrade je troškovno bitno povoljniji. S labirintnom brtvom na mjestu spajanja između dviju poluljuski pokrivne kape postiže se na posebno jednostavan način pouzdanu zabrtvljenost prema okolini. Posebno jednostavnu montažu pokrivne kape omogućuje uskočni spoj dviju poluljuski. Za dodatno osiguranje protiv neovlaštenog skidanja pokrivne kape može se predvidjeti vijčani spoj. The cover cap can be made in one piece by the immersion process. However, the cover cap can also consist of two half-shells made by injection molding. This method of production is cost-effective. With the labyrinth seal at the point of connection between the two half-shells of the cover cap, a reliable seal against the environment is achieved in a particularly simple way. The snap-on connection of the two half-shells enables particularly simple assembly of the cover cap. For additional security against unauthorized removal of the cover cap, a screw connection can be provided.

Predloženi izum će se u nastavku pobliže objasniti pomoću dva primjera izvedbe prikazana na priloženim crtežima. The proposed invention will be explained below in more detail by means of two examples of implementation shown in the attached drawings.

Pri tome Thereby

slika 1 prikazuje prvi primjer izvedbe, figure 1 shows the first example of performance,

slika 2 prikazuje primjer izvedbe u uzemljenom stanju, i figure 2 shows an example of the performance in the grounded state, i

slika 3 prikazuje presjek kroz drugi primjer izvedbe. Figure 3 shows a section through another exemplary embodiment.

Slika 1 prikazuje pokrivnu kapu 1, koja sigurno od dodira pokriva vodeće priključne svornjake 5 koji strše van iz provodnog izolatora 3 transformatora u energetskoj razdjelnoj mreži i koji su tijekom rada u pod naponom. S pokrivnom kapom 1 pokrivena je, nadalje, priključna stezaljka 7, koja je povezana s priključnim svornjakom 5 i koja preko vodiča 9 ide na eleketrični uređaj. Pokrivna kapa 1 ima gotovo oblik ogledalne slike. Dva prirubna područja 13 i 14, koja odgovaraju jedno drugom, između propusta za provodni izolator 3 i propusta za vodič 9 međusobno su povezana vijčanim spojem 19 za osiguranje pokrivne kape 1 protiv neovlaštenog skidanja. Vijci kao također i matice vijčanog spoja 19 su od plastike. Na pokrivnoj kapi 1 predviđena je, nadalje, kapa 17. Figure 1 shows the cover cap 1, which safely covers the leading connecting pins 5 that protrude from the conductive insulator 3 of the transformer in the power distribution network and which are under voltage during operation. The cover cap 1 also covers the connection clamp 7, which is connected to the connection pin 5 and which goes to the electrical device via the conductor 9. Cover cap 1 has almost the shape of a mirror image. The two flange areas 13 and 14, which correspond to each other, between the conductive insulator bushing 3 and the conductor bushing 9 are interconnected by a screw connection 19 to secure the cover cap 1 against unauthorized removal. The screws as well as the nuts of the screw connection 19 are made of plastic. A cap 17 is also provided on the cover cap 1.

Priključni svornjak 5 produžen je prema gore i tvori svornjak za uzemljenje 21, koji strši sve do u kapu 17. Kapa 17 se može zakretno učvrstiti na obje poluljuske 13 i 14, tako da je moguće uzemljenje preko svornjaka za uzemljenje 21 (usporedi sliku 2) . Prema tom izvedbenom primjeru, kako svornjaci za uzemljenje 21, tako također i kapa 17 imaju krajnje područje 23, odnosno 25 oblika kugle, na koje se može dovesti priključak 27 za uzemljenje. The connecting bolt 5 is extended upwards and forms a grounding bolt 21, which protrudes all the way into the cap 17. The cap 17 can be pivoted on both half-shells 13 and 14, so that grounding is possible via the grounding bolt 21 (compare figure 2) . According to this embodiment, both the grounding bolts 21 and the cap 17 have end areas 23 and 25 in the shape of a sphere, to which the grounding connection 27 can be connected.

U pokrivnoj kapi 1 ili kapi 17 mogu se, nadalje, predvidjeti mali provrti promjera primjerice 4 mm, kroz koje se može uvesti ispitivač napona, da se provjeri da li na svornjacima 21 za uzemljenje ima napona. Ako tamo nema napona, tada se može uzemljiti i nakon toga se može raditi na naprvi. Furthermore, small holes with a diameter of, for example, 4 mm can be provided in the cover drop 1 or drop 17, through which a voltage tester can be inserted, to check whether there is voltage on the earthing pins 21. If there is no voltage there, then it can be grounded and after that you can work on the device.

Drugi primjer izvedbe na slici 3 prikazuje pokrivnu kapu koja se sastoji iz dviju poluljuski 113 i 113, oblika gotovo ogledalne slike, koje su izrađene od dijelova proizvedenih injekcijskim prešanjem. Uskočni spoj 115 povezuje međusobno obje poluljuske 113 i 114. Labirintna brtva zabrtvljuje udarne rubove. U ostalim značajkama, naročito što se tiče kape, drugi primjer izvedbe podudara se s prvim primjerom izvedbe. Another example of the embodiment in Figure 3 shows a cover cap consisting of two half-shells 113 and 113, in the shape of an almost mirror image, which are made of parts produced by injection molding. A snap-on joint 115 connects both half-shells 113 and 114 to each other. A labyrinth seal seals the impact edges. In other features, especially with regard to the cap, the second embodiment matches the first embodiment.

Claims

1. Cover cap (1) for touch-protected covering of the connection pin (5) that protrudes from the conductive insulator (3), which is energized during operation and at least one connection clamp (7), placed on the connection pin (5), indicated by the fact that a removable cap (17) is placed on the cover cap (1).

2. Cover cap according to claim 1, characterized by the fact that the connection pin (5) is provided with a pin (21) for grounding, which is covered with a cap (17).

3. Cover cap according to claim 1 or 2, characterized in that the cap (17) can be rotated opposite the cover cap (1).

4. Covering cap according to one of claims 1 to 3, characterized in that the cap (17) can be put on.

5. Cover cap according to one of claims 1 to 4, characterized in that the cap (17) is fixed on the cover cap (1) so that a key or tool is required to open the cap (17).

6. A cover cap according to one of claims 1 to 5, characterized in that the cap (17) and the earthing pin (21) have equal, preferably spherical end areas (25, 23).

7. Cover cap according to one of the previous claims, characterized in that the cover cap has two half-shells (113, 114).

8. Cover cap according to claim 7, characterized in that both half-shells (113, 114) are connected to each other with a snap connection (115).

9. Cover cap according to claim 7 or 8, characterized in that both half-shells (113, 114) have a labyrinth seal (116) on their impact edges.