EP1053573B1 - Socle de connexion electrique, notamment pour atmosphere explosible, et son procede de fabrication - Google Patents
Socle de connexion electrique, notamment pour atmosphere explosible, et son procede de fabrication Download PDFInfo
- Publication number
- EP1053573B1 EP1053573B1 EP99956088A EP99956088A EP1053573B1 EP 1053573 B1 EP1053573 B1 EP 1053573B1 EP 99956088 A EP99956088 A EP 99956088A EP 99956088 A EP99956088 A EP 99956088A EP 1053573 B1 EP1053573 B1 EP 1053573B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insulating block
- disc
- contact
- connecting socket
- socket according
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
- H01R13/447—Shutter or cover plate
- H01R13/453—Shutter or cover plate opened by engagement of counterpart
- H01R13/4532—Rotating shutter
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/527—Flameproof cases
Definitions
- the invention relates to an electrical connection base, particularly for an atmosphere explosive or explosive, in the form of, for example, a socket current or a mobile extension socket, and its manufacturing method.
- connection base as described in document GB-2125234 A, which, to protect the contacts of the base in the absence of any connection with a plug, is equipped with a safety disk provided with as many peripheral openings that the insulating block of the base is provided with peripheral contact housings, and which is rotatably mounted on said insulating block by a central opening with which it is provided and whose inner surface cooperates with the lateral surface of a central protuberance of the block insulation forming a rotation hub, so that the peripheral openings of the discs can be brought to will by rotation of the latter in relation to housing corresponding insulating block.
- this part is vulnerable and the slightest deterioration can the effectiveness of said explosion-proof joint surface.
- connection base provided with of a security disk as mentioned above, but which is particularly remarkable in that at least some of the surfaces in contact of the safety disc and the insulating block as well as the respectively internal surfaces of at least the peripheral openings of the safety disc and outer corresponding pins of the plug form explosion-proof joint surfaces so that at least the peripheral dwellings contact of the insulating block constitute at least one explosion-proof envelope.
- the central protuberance or hub of the insulating block may be in a embodiment, pierced for the passage of a central pin of the plug for cooperate with a contact arranged in a central housing of the insulating block.
- the safety disc and the insulating block have surfaces planar frontal surfaces which apply to each other and at least a part of which an explosion-proof joint surface and / or explosion-proof joint surfaces between the safety disc and the insulating block consist at least in part of the least part of the lateral surface of rotation of the hub of the insulating block and the surface inside the central opening of the disc.
- the security disk has an extension peripheral ring which covers a part of the insulating block, at least a part of the overlapping zones of said insulating block and said extension constituting lateral rotational surfaces forming an explosion-proof joint.
- the lateral surfaces of rotation of the insulating block and the safety disk formed on the one hand by the hub and the a journey disk and, on the other hand, by the overlapping zones of the insulating block and the extension of the disc are cylindrical surfaces of revolution.
- At least the peripheral units of contact are, for example, closed at the base of the corresponding contacts by elements forming in said housing explosion-proof joint surfaces.
- the hub of the insulating block has a flared end in hollow which ensures the translation in solidarity of the disk and the insulating block.
- the contacts of the base are end pressure contacts each provided with a contact head, a braid and a helical spring disposed in the corresponding contact housing.
- the invention further suggests a particular non-compulsory molding method, which is remarkable in that the insulating block is overmoulded in or on the disk of safety, itself realized previously and serving as insert, the withdrawal of the material the block after molding ensuring the gap, or play, necessary and adjusted between surfaces in contact with the parts for the rotation of the disk on said block and for constituting the explosion-proof joint (s).
- the electric socket shown therefore comprises a plug 1 and a base 2.
- Plug 1 is provided with contact pins such as pins 3a, 3b, 3c visible on the sectional views, and the base 2 has antagonistic contacts 4a, 4b, 4c.
- Contacts 4a, 4b, 4c of the base are arranged in housings 5a, 5b, 5c formed in an insulating block 6 and they are here as a non-limiting example under form of end pressure contacts, generally constituted each classically and as represented by a contact head 7, a conductive braid 7 'and a spring helicoidal pressure 8 (references 7, 7 'and 8 being listed only in Figure 2 for the central contact 4b).
- the plug 1 here has five pins and of course there are so many antagonistic contacts in the base 2 but we can not see only three in Figures 4 and 6 and one in Figure 2.
- the base 2 is provided with a central housing 5b for a central contact 4b constituting the earth contact intended to cooperate with a central contact pin 3b of the plug, the other contacts 4a, 4c, 3a, 3c of the base and the plug being called peripheral and constituting the phase contacts or the neutral.
- the base is provided with a disc 9 rotatably mounted on the insulating block 6, the disc 9 being provided with as much 10a, 10b 10c that the plug and the base are provided with contacts since said openings are intended to be traversed by the contact pins of the plug as it will be described below.
- the base is provided with a cover of protection 11 intended to be folded when the plug is not connected, and a hook 12 (FIGS. 4 and 6) to lock either the cover or the plug in the base in connection position ( Figures 5 and 6).
- the insulating block 6 is provided with a central protrusion 13 pierced in its center, which forms a rotation hub for the safety disc 9 which cooperates with said hub by the inner surface of its central opening 10b.
- Said central opening 10b of the disk 9 and the central protuberance or hub 13 of the insulating block 6 constitute lateral surfaces of rotation which are, in addition, as shown in this example, at least partly cylindrical of revolution.
- the safety disk 9 is more provided with a peripheral annular extension 14 which covers a part of the insulating block 6, the overlapping zones of the extension 14 and the insulating block 6 constituting cylindrical rotating surfaces of revolution, coaxial with surfaces mentioned above.
- the security disk 9 hides the peripheral contacts 4a, 4c of the base 2, while the pins 3a, 3b, 3c of the plug may be introduced into openings 10a, 10b 10c of the safety disk (FIGS. and 2).
- the plug is rotated which causes the rotation of the security disk until it discovers the peripheral contacts 4a and 4c of the base (FIGS. and 4).
- the protrusion 13 of the insulating block 6 is further provided here with a portion flared hollow 13 '( Figure 1) which secures in translation the safety disc 9 and said insulating block 6, said portion 13 'may also have slots (clearly visible Figure 10) creating sectors that provide flexibility.
- the protuberance 13 does not does not present the flared portion 13 ', the fixing of the disc 9 being provided by a clip reported.
- the inner surface of the aperture 10b of the disk and the surface the outer surface of the hub 13 constitute lateral surfaces of rotation on a certain length, as well as the overlapping areas of the extension 14 of the disc on block 6, while the peripheral pins 3a, 3c of the plug pass through a certain length the calibrated openings 10a, 10c of the disc 9.
- the contact housing 5a, 5c (and even here 5b) are closed to their ends opposite the contact heads by any means and in particular by means of elements constituting the crimping feet of the base contacts as shown in 15a, 15b and 15c.
- these elements form in said dwellings 15a, 15b, 15c of the explosion-proof joint surfaces.
- the French and European standards define an explosion-proof envelope as a mode of protection in which parts that can ignite an explosive atmosphere are enclosed in an envelope which resists the pressure developed during an internal explosion of a mixture explosive and which prevents the transmission of the explosion to the surrounding explosive atmosphere of the envelope.
- An explosion-proof joint is where the corresponding surfaces of two elements of an envelope or the common part of envelopes come together and prevent the transmission of an internal explosion to the surrounding explosive atmosphere of the envelope, its length being the shortest path between the inside and the outside of the envelope.
- the gap of an explosion-proof joint is of course the gap between the faces of said seal.
- the gap is the difference between the diameter of the bore and the body cylindrical.
- the base according to the invention can therefore be explosion-proof because of the constitution a common flameproof enclosure for all peripheral contacts by simple constitution of explosion-proof joints.
- the example shown relates to a base and a connection plug for a three-phase current
- the invention also plans to build an explosion-proof flat gasket between the insulation block 6 and the disc 9.
- the insulating block 6 and the disc 9 have flat frontal surfaces that apply to one another.
- the gap between said surfaces combined with the distance between two peripheral housings or equivalently between two peripheral openings 10a, 10c of the safety disk, such as the distance diagrammatically shown in d in FIG. 9, makes it possible to constitute, if desired, a explosion-proof flat gasket referenced 16 in the sectional figures, which can thus create an explosion-proof envelope for each peripheral housing 5b, 5c of contact so that the absence of certain pins and thus openings of the disk unsealed is not detrimental.
- the embodiment described above has two cylindrical seals explosion-proof (hub 13 and extension 14), in addition to those made by the pins themselves, and possibly an explosion-proof flat gasket 16 which makes it possible to carry out an explosion-proof enclosure for each peripheral electrical contact:
- the explosion-proof flat gasket 16 made then makes it possible not to be in the obligation to have an explosion-proof cylindrical seal formed by said protuberance.
- the invention also proposes, without this being mandatory, an original process molding.
- the disk is first made which can be seen in FIGS. 2, 4, 6 and more particularly on the Figures 9 and 10, for example by molding, in particular in a thermosetting material.
- FIG. 9 represents the safety disc 9, actually in the form of a cap because of its peripheral annular extension 14, FIG. result obtained from block 6 and disk 9 after overmolding, or after assembly of molded parts separately.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Description
- la figure 1 est une vue de dessus d'une prise de courant munie d'un socle de prise de courant selon l'invention, et d'une fiche en position d'introduction,
- la figure 2 est une coupe selon II-II de la figure 1,
- les figures 3 et 4 correspondent respectivement aux figures 1 et 2, montrant la fiche en position prête à la connexion après avoir subi une rotation (la coupe de la figure 4 étant selon IV-IV de la figure 3),
- les figures 5 et 6 correspondent respectivement aux figures 1 et 2 ou 3 et 4, montrant la fiche en position de connexion (la coupe de la figure 6 étant réalisée selon VI-VI de la figure 5),
- la figure 7 représente schématiquement un procédé de fabrication par surmoulage du bloc isolant du socle dans le disque de sécurité,
- la figure 8 est une coupe selon VIII-VIII de la figure 7,
- la figure 9 montre en perspective de dessous un disque de sécurité selon l'invention,
- la figure 10 représente en perspective de dessus le bloc isolant et son disque de sécurité.
Claims (10)
- Socle (2) de connexion électrique, notamment pour atmosphère explosible, pourvu de contacts électriques (4a,4c) qui sont montés dans des logements périphériques (5a,5c) de contact d'un bloc isolant (6) et qui sont prévus pour coopérer avec des broches de contact (3a,3c) correspondantes d'une fiche (1), tandis qu'un disque de sécurité (9) pourvu d'au moins autant d'ajours périphériques (10a,10c) que le bloc isolant (6) est muni de logements périphériques (5a,5c) de contact, est monté rotatif sur ledit bloc isolant (6) par un ajour central (10b) dont il est muni et dont la surface intérieure coopère avec la surface latérale d'une protubérance centrale (13) du bloc isolant (6) formant un moyeu de rotation, de telle sorte que les ajours périphériques (10a,10c) du disque peuvent être amenés à volonté par rotation de ce dernier en regard des logements correspondants (5a,5c) du bloc isolant (6), caractérisé en ce qu'au moins certaines des surfaces en contact du disque de sécurité (9) et du bloc isolant (6) ainsi que les surfaces respectivement intérieures d'au moins les ajours périphériques (10a,10c) du disque de sécurité (9) et extérieures des broches (3a,3c) correspondantes de la fiche forment des surfaces de joint antidéflagrant de telle sorte qu'au moins les logements périphériques (5a,5c) de contact du bloc isolant constituent au moins une enveloppe antidéflagrante.
- Socle de connexion selon la revendication 1, caractérisé en ce que la protubérance centrale ou moyeu (13) du bloc isolant est percé pour le passage d'une broche centrale (3b) de la fiche destinée à coopérer avec un contact (4b) aménagé dans un logement central (5b) du bloc isolant (6).
- Socle de connexion selon la revendication 1 et 2, caractérisé en ce que le disque de sécurité (9) et le bloc isolant (6) présentent des surfaces frontales planes qui s'appliquent l'une sur l'autre et dont au moins une partie constitue une surface de joint antidéflagrant (16).
- Socle de connexion selon l'une des revendications 1 à 3, caractérisé en ce que les surfaces de joint antidéflagrant entre le disque de sécurité (9) et le bloc isolant (6) sont constituées au moins en partie par au moins une partie de la surface latérale de rotation du moyeu (13) du bloc isolant (6) et la surface intérieure de l'ajour central (10b) du disque.
- Socle de connexion selon l'une des revendications 1 à 4, caractérisé en ce que le disque de sécurité (9) présente un prolongement annulaire périphérique (14) qui vient recouvrir une partie du bloc isolant (6), au moins une partie des zones en recouvrement dudit bloc isolant (6) et dudit prolongement (14) constituant des surfaces latérales de rotation formant joint antidéflagrant.
- Socle de connexion selon la revendication 5, caractérisé en ce que les surfaces latérales de rotation du bloc isolant (6) et du disque de sécurité (9) formées d'une part, par le moyeu (13) et l'ajour central (10b) du disque et, d'autre part, par les zones en recouvrement du bloc isolant (6) et du prolongement (14) du disque, sont des surfaces cylindriques de révolution.
- Socle de connexion selon l'une des revendications 1 à 6, caractérisé en ce qu'au moins les logements périphériques (5a, 5c) de contact sont fermés à la base des contacts (4a,4c) correspondants par des éléments (15a,15c) formant dans lesdits logements des surfaces de joint antidéflagrant.
- Socle de connexion selon l'une des revendications 1 à 7, caractérisé en ce que le moyeu (13) du bloc isolant (6) présente une extrémité (13') évasée en creux qui assure la solidarisation en translation du disque (9) et du bloc isolant (6).
- Socle de connexion selon l'une des revendications 1 à 8, caractérisé en ce que les contacts (4a,4b,4c) du socle sont des contacts à pression en bout pourvus chacun d'une tête de contact (7), d'une tresse (7') et d'un ressort hélicoïdal (8) disposés dans le logement de contact correspondant (5a,5b,5c).
- Socle de connexion électrique selon l'une des revendications 1 à 9, caractérisé en ce que le bloc isolant (6) est surmoulé dans ou sur le disque de sécurité (9), lui-même réalisé préalablement et servant d'insert, le retrait de la matière du bloc (6) après moulage assurant l'interstice, ou le jeu, nécessaire et ajusté entre les surfaces en contact des pièces pour la rotation du disque (9) sur ledit bloc (6) et pour constituer le ou les joints antidéflagrants.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9815329 | 1998-12-04 | ||
FR9815329A FR2786932B1 (fr) | 1998-12-04 | 1998-12-04 | Socle de connexion electrique, notamment pour atmosphere explosible, et son procede de fabrication |
PCT/FR1999/002844 WO2000035054A1 (fr) | 1998-12-04 | 1999-11-19 | Socle de connexion electrique, notamment pour atmosphere explosible, et son procede de fabrication |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1053573A1 EP1053573A1 (fr) | 2000-11-22 |
EP1053573B1 true EP1053573B1 (fr) | 2004-12-15 |
Family
ID=9533585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99956088A Expired - Lifetime EP1053573B1 (fr) | 1998-12-04 | 1999-11-19 | Socle de connexion electrique, notamment pour atmosphere explosible, et son procede de fabrication |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1053573B1 (fr) |
AU (1) | AU753861B2 (fr) |
DE (1) | DE69922636T2 (fr) |
FR (1) | FR2786932B1 (fr) |
WO (1) | WO2000035054A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0208954D0 (en) * | 2002-04-19 | 2002-05-29 | Hawke Cable Glands Ltd | An electrical connector |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2697212A (en) * | 1953-01-12 | 1954-12-14 | Sarl Arlux | Explosion-proof electrical connecting device |
FR1301448A (fr) * | 1961-07-08 | 1962-08-17 | Expl Des Procedes Marechal D | Perfectionnements aux dispositifs de connexions électriques |
US3330920A (en) * | 1965-12-02 | 1967-07-11 | Arthur I Appleton | Explosion-proof plug and receptacle with switch means |
DE3221111C2 (de) * | 1982-06-04 | 1986-01-02 | Brown, Boveri & Cie Ag, 6800 Mannheim | Explosions- oder schlagwettergeschützte elektrische Kupplungssteckvorrichtung |
FR2686461A1 (fr) * | 1992-01-16 | 1993-07-23 | Besso Rene | Dispositif de raccordement electrique etanche. |
-
1998
- 1998-12-04 FR FR9815329A patent/FR2786932B1/fr not_active Expired - Fee Related
-
1999
- 1999-11-19 WO PCT/FR1999/002844 patent/WO2000035054A1/fr active IP Right Grant
- 1999-11-19 DE DE69922636T patent/DE69922636T2/de not_active Expired - Lifetime
- 1999-11-19 EP EP99956088A patent/EP1053573B1/fr not_active Expired - Lifetime
- 1999-11-19 AU AU12774/00A patent/AU753861B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE69922636D1 (de) | 2005-01-20 |
WO2000035054A1 (fr) | 2000-06-15 |
FR2786932A1 (fr) | 2000-06-09 |
DE69922636T2 (de) | 2005-05-25 |
AU1277400A (en) | 2000-06-26 |
EP1053573A1 (fr) | 2000-11-22 |
FR2786932B1 (fr) | 2000-12-29 |
AU753861B2 (en) | 2002-10-31 |
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