EP1173906B1 - Safety socket - Google Patents

Safety socket Download PDF

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Publication number
EP1173906B1
EP1173906B1 EP00910485A EP00910485A EP1173906B1 EP 1173906 B1 EP1173906 B1 EP 1173906B1 EP 00910485 A EP00910485 A EP 00910485A EP 00910485 A EP00910485 A EP 00910485A EP 1173906 B1 EP1173906 B1 EP 1173906B1
Authority
EP
European Patent Office
Prior art keywords
socket
contact
disc
conductive
anyone
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
EP00910485A
Other languages
German (de)
French (fr)
Other versions
EP1173906A1 (en
Inventor
Yves Bonard
Jean-Luc Damond
Philippe Moret
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.)
Dolsimer Investment SA
Original Assignee
Dolsimer Investment SA
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
Priority claimed from EP99810372A external-priority patent/EP1050936A1/en
Application filed by Dolsimer Investment SA filed Critical Dolsimer Investment SA
Priority to EP00910485A priority Critical patent/EP1173906B1/en
Publication of EP1173906A1 publication Critical patent/EP1173906A1/en
Application granted granted Critical
Publication of EP1173906B1 publication Critical patent/EP1173906B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/945—Holders with built-in electrical component
    • H01R33/96—Holders with built-in electrical component with switch operated by engagement or disengagement of coupling
    • H01R33/962—Holders with built-in electrical component with switch operated by engagement or disengagement of coupling for screw type coupling devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/22—Two-pole devices for screw type base, e.g. for lamp

Definitions

  • the present invention relates to a safety socket for an electric bulb with screw base or bayonet.
  • an accident by electrocution can occur when a bulb is broken in a socket and a portion of the bulb electrical circuit remains energized and no longer protected by the glass of the bulb. In this case also a contact by a finger or a tool can be dangerous.
  • EP-A-O.744.792 describes a socket provided with a safety disk lowering when inserting the bulb into the socket.
  • the safety disk is fitted with a through contact for ensure the connection between the bulb base contact and a contact pad at phase voltage.
  • This form of execution corresponds to the closest prior art to the invention which is introduced in the preamble of the independent claims.
  • the safety disk is, in this document, provided with another contact through for the passage of neutral, this contact being connected with a flexible conductive blade pressing on the thread of the base the bulb
  • This conductive strip represents a danger for user because it is easy when there is no light bulb in the socket, bend this blade with your fingers or a tool and energize, especially in the case where the conductors of phase and neutral have been reversed.
  • Application EP-A-0.027.244 describes a socket provided with a very complicated, therefore unreliable construction safety device use. As before, a movable conductive blade is responsible for ensuring the connection to neutral with the same drawback as previously mentioned.
  • a first object of the invention is to provide a socket for safety for a light bulb fitted with a safety device to prevent accidental contact with any conductive part accessible from the socket.
  • a second object of the invention is to propose that the previous safety socket is fitted with a safety device capable of operating regardless of how said socket is connected to the power cable.
  • Another object of the invention is to provide a socket for safety equipped with a safety device of simple and reliable design in use.
  • Another object of the invention is to provide a socket for safety fitted with a redundant safety safety device.
  • Yet another object of the invention is to propose that the safety socket is fitted with a lockable safety device.
  • transition sockets allowing install a bulb with a base having a determined diameter in a socket having an equal or different diameter.
  • Another object of the invention is to propose a transition sleeve fitted with one or other of the previous security.
  • the socket 1 of FIG. 1 for screw base bulb, includes threaded metal tube 10, inserted in an insulating support 11 as well as a central contact pad 12.
  • a first contact terminal 100 receives the neutral conductor of the cable of the socket (not shown), while a second contact terminal 120 receives the phase conductor.
  • the contact terminal 120 is directly connected to the central contact pad 12 while the terminal contact 100 is connected to metal tube 10.
  • FIGS 1, 2 and 3 show a screw socket 1 provided with a safety device 2 according to a first embodiment, consisting of an insulating safety disc 20.
  • the central contact pad 12 is directly connected to the terminal 120.
  • the disc 20 consists essentially of an insulating material and is provided with several radial extensions 21, also insulating, each of said extensions 21 being housed in an obviously 110 of the insulating support 11 and / or of the threaded tube 10.
  • a spring means 22 is disposed between the bottom of the sleeve 1 and the disc 20, acting so as to move the disc 20 away from the bottom of the socket, respectively of the central contact pad 12. Shoulders 111 limit the recesses 110 towards the outside of the sleeve, preventing the disc 20 to come out of the socket.
  • the insulating disc 20 comprises a pellet of contact 200, placed in the center of the disc 20 and passing through the disc along the direction of the longitudinal axis of the sleeve.
  • the disc 20 further comprises a conductive track 201 on its underside, isolated relative to the patch 200. A trace possible of this conductive track 201 is visible in Figure 3.
  • the bottom of the socket comprises, in addition to the central stud 12, connected to the terminal 120, two pads 13 and 14 arranged on either side of the central pad 12, opposite portions of the conductive track 201.
  • the stud 14 is connected to the neutral terminal 100, while the stud 13 is connected to the threaded tube 10.
  • the current flow is established, from the terminal of contact 120 energized, to contact pad 12 and via the contact patch contact 200 to the base contact 31, the circuit closing at from the base 30 to the threaded tube 10 connected to the contact pad 13, then via the conductive track 201 towards the contact pad 14, itself connected to contact terminal 100, at neutral potential.
  • the disc 20 has been represented in FIG. 3 with four extensions radials 21, but it is obvious that he could understand a number of them different.
  • the disc 20 will be provided with at least two radial extensions 21.
  • the spring means 22 can be arranged differently from what is shown here or replaced by any elastic means fulfilling the same function as that described.
  • the two studs 13 and 14 can be arranged in any places at the bottom of the socket, the conductive track 201 having a suitable shape for establishing contact between these two studs.
  • Such a safety device can also be adapted for a socket intended to receive a bulb with bayonet base.
  • sockets for bayonet bulbs one first type, generally used for an alternating voltage, in which has a central contact pad, similar to pad 12 described more high and a smooth contact tube having electrically the same function as the threaded tube 10 described above and a second type, generally used for direct voltage, comprising two contact pads arranged side by side at the bottom of the socket.
  • first type central stud and contact tube
  • the construction and operation of the safety device are similar to what has been described above.
  • the sockets of the second type two contact pads side by side
  • the disc 20 will have two through contact pads, each one suitable for contact one of the studs with the corresponding base bottom contact of the base of the bulb.
  • a safety device which is not part of the present invention as such is visible in Figures 4, 4A and 5.
  • the electrical connection between the threaded or conductive tube 10 and the contact terminal 100 is not cut by the movement of the disc 20, as described above, but by an independent auxiliary cut-off means 4.
  • This auxiliary breaking means 4 is constituted, as is see in Figures 4, 4A and 5, a lever or pusher 40, made of material insulator, capable of being moved radially in a hole 112 arranged in the insulating support 11 and the conductive tube 10.
  • the bore 112 opens into a housing 113 arranged in the insulating support 11.
  • the rear portion of the pusher 40 comprises a patch or an element contact 400, a stop ring 41 and an elastic means, by example a spring 42, capable of pushing the pusher 40 radially in direction of the interior of the conductive tube 10.
  • the movement of movement of the pusher 40 is limited by the stop ring 41.
  • a second pad or contact element 401 is arranged in the housing 113, opposite the pad 400.
  • One of the two pads, of preferably the pad 401 is directly electrically connected to the contact terminal 100, while the other pad, preferably the 400 chip, is directly electrically connected to the conductive tube 10.
  • FIG. 6 Another embodiment of a safety socket according to the present invention is visible in Figure 6.
  • This safety socket includes the devices described previously, arranged so that there is a double cut both on the phase circuit and on the neutral circuit. Such an arrangement may be useful in certain cases where the socket Safety is used in a humid atmosphere or environment.
  • the socket is similar to that described previously in look at Figures 1 to 3, except that it also has a auxiliary breaking device 4 as described with reference to FIGS. 4 and 5 with the difference that this auxiliary cut-off device is interposed between the contact terminal 120 and the contact pad 12.
  • a auxiliary breaking device 4 as described with reference to FIGS. 4 and 5 with the difference that this auxiliary cut-off device is interposed between the contact terminal 120 and the contact pad 12.
  • Figure 7 shows yet another embodiment of a safety socket in which the phase circuit is secured as previously by a first auxiliary breaking device 4 followed du, disc 20, while a second auxiliary cut-off device 4, is inserted in the neutral circuit.
  • This provides security maximum, in particular in the case where the disc 20 has been forced or broken as well as when the socket works in an atmosphere or humid environment.
  • the other embodiments mentioned may be suitable for bayonet sockets of either type described.
  • the spring means 42 may be arranged differently from what is shown in the figure, can be replaced by any device elastic having an equivalent effect or then the same effect of connection and disconnection of two contact pads can be obtained by a tilting lever, one end of which projects into the threaded tube or any insulated actuator having an effect equivalent.
  • the conductive tube 10, threaded or smooth can be replaced by an insulating tube having the function of fixing the bulb, while the power supply function can be obtained by a tab or any conductive portion disposed on said insulating tube and able to come into contact with the base of a bulb inserted into the socket.
  • a complementary device for locking the disc 20 in a position remote from the central stud 12 can be suitable so as to avoid that the disc 20 cannot be moved by pushing it in with a finger or a tool, without a light bulb is introduced into the socket.
  • a first version of a locking device 5 is shown schematically in plan in Figure 3 and in elevation in FIG. 8.
  • the locking device 5 here consists of a lever 50 mounted on a pivot 51 able to pivot around an axis 511 perpendicular to the longitudinal axis of the socket as well as sliding the along said axis 511.
  • the lever 50 comprises a shoulder 52 comprising an inclined plane 520 and a flat 521 as well as a push button 510 protruding from the outer wall of the socket.
  • the device is completed with a first elastic means, by example a spring 53, shown schematically here by a leaf spring, suitable for keep the lever 50 in the locked position parallel to the axis longitudinal of the sleeve, as well as a second elastic means, for example a spring 54, capable of pushing the lever 50 radially, push button 510 outwards respectively.
  • Leverage 50 is able to pivot by a determined angle around the axis 511 and to slide of a determined value, in a housing 114 fitted out this effect in the insulating support 11.
  • the most radial extension 21 close to the locking device 5 comprises a notch 210, turned towards the side of the locking device and slightly wider greater than the thickness of the lever 50.
  • the disc 20 When a bulb is placed in the socket and it is removed by unscrewing it, the disc 20 accompanies the movement removing the bulb base, being pressed by the spring 22 seen in the Figure 1. During this movement, the radial extension 21 meets the inclined plane 520 and rotates the lever 50 in the direction indicated by the arrows in FIG. 8. When the radial extensions 21 of the disc 20 come into abutment against the shoulders 111, the lever 50 returns rest position under the action of the leaf spring 53, the flat 521 preventing a further displacement of the disc 20 towards the bottom of the sleeve retaining the end portion of the radial extension 21, as seen in plan on the lower portion of figure 3. The disc 20 is thus locked in position such that contact with the stud contact center 12 is impossible.
  • the disc 20 In order to allow the installation of a new bulb in the socket, it is necessary to unlock the disc 20. For this, simply press the push button 510, which pushes the lever 50 towards the notch 210, as seen on the upper portion of FIG. 3. Thus the disc 20 is unlocked and can be lowered towards the bottom of the socket during insertion of the bulb to allow the central pad 12 to come into contact with the bulb base contact, the studs 13 and respectively 14 with the conductive track 201.
  • the locking device 6 operates from somewhat similar to that just described above, the difference being that the unlocking is done automatically during the introduction of a bulb into the socket.
  • the device 6 is provided with a pusher 60, similar to the pusher 40 described previously with reference to FIG. 4, the end of the pusher 60 arranged in the recess 113 carrying a lever 61 provided as the lever 50 seen above from a stop flat.
  • the displacement of the lever 61 to unlock the disc 20 is made radially towards outside.
  • the base comes push the pusher 60 outward, in opposition to the means elastic represented by the spring 62, as described above in see Figures 4 and 5.
  • the lever 61 is thus moved towards the end free of extension 21 or the notch 210 which is fitted therein, of so as to release the extension 21 retained by the flat, respectively allow the disc 20 to move towards the bottom of the sleeve.
  • the disc 20 is pushed by the spring 22 until the extensions 21 come up against the shoulders 111, the complete withdrawal of the bulb releasing the pusher 60, which under the effect of the spring 62 comes to block the extension 21 under the flat part of the lever 61.
  • the means of lock 6 are activated automatically upon insertion or removing a bulb and therefore do not require any manipulation for their actuation.
  • edges of the elements of the device for locking in operational contact for example the edge of the radial extension 21 in contact with the lever 50 or 61 according to one or the other of the versions described, are formed, for example bevelled or rounded, so as to facilitate the sliding of these elements between them.
  • the upper portions of guide recesses 113 may each include a obviously additional, arranged on a periphery portion of the bush, perpendicular to the guide recess corresponding, the disc 20 further comprising at least one lever controls, for example a radial extension of an extension 21, accessible from outside the socket, said lever allowing, when the disc is in the stop position in the upper portion guide recesses, to rotate it by a portion of a tower so as to engage the extensions in the recesses additional, so as to lock the disc, pivoting in opposite direction to unlock it.
  • Said lever can be operated manually or using a tool.
  • pusher 60 of Figures 9 and 10 we could have for example a lever pivoting, controlling the lever 61, and one end of which would protrude in the threaded conductive tube 10 or any other device isolated actuation.
  • the safety device 4 comprising, as described above, a pusher 40 projecting inside the tube conductor 10 is fairly similar in construction to the lock 6 which has just been described. We can therefore advantageously combine these two devices under a common device, actuation of the pusher by the introduction of a bulb base ensuring on the one hand an electrical contact and unlocking on the other hand the insulating disc 20.
  • FIG. 11 which shows a socket which is not included in the invention as such due to the absence of the disc 20, shows a safety device 7 which can be added to the socket of the present invention, intended at detect the presence or absence of a bulb 3 in the socket.
  • the device 7 instead of detecting the presence or absence of the base 30 in the threaded tube as described so far the device 7 detects the presence or absence of the glass 32 of the bulb 3.
  • This device security is especially helpful in preventing a portion of the bulb 3 remains energized when the glass 32 is broken, in particular by vandalism.
  • the safety device 7 here consists of at least one lever or pusher 70, suitable under the effect of an elastic means, for example a spring 71, to come detect the presence or absence of the glass 32.
  • the pusher 70 is housed in a recess 115 of the insulating support 11 and is able to slide parallel to the longitudinal axis of the socket.
  • the spring 71 pushes the push button 70 outwards, respectively in the direction of glass 32 of so that a first end 72 of the pusher can enter in contact with the glass 32.
  • the other end of the pusher 70 is provided a contact means 73 capable of establishing an electrical connection with a second means of contact 74.
  • variant embodiments can be considered, in particular the replacement of pushers 70 with tilting levers or other actuating devices having an effect similar.
  • FIG. 11 shows yet another safety device 8, can be added to the socket of the present invention, independent of the safety device 7, consisting of a micro fuse 80 mounted on the circuit connecting the phase terminal 120 and the central contact pad 12.
  • the micro fuse 80 can be changed from the outside of the socket.
  • a safety socket in either form of execution or variants described finds numerous applications. For example it can be used as a socket mounted on a luminaire intended for a children's room. Several sockets safety can also be mounted in parallel, or in series in the case of a direct supply current, so as to form a light garland, for decoration or for the protection of a site for example. In this case, these garlands being quite often subject to vandalism, subsequent electrocution may be avoided.
  • Figure 12 shows a transition socket 9 comprising a first conductive threaded tube 90, inside which there is a body insulator 91 and a second conductive threaded tube 92.
  • the bulb whose base diameter is suitable to the diameter of the second threaded tube 92 is screwed into this second threaded tube while the transition sleeve itself is screwed into another socket adapted to the diameter of the first threaded tube 90.
  • the two threaded tubes 90 and 92 are directly electrically connected and the central contact pad 12 is directly electrically connected to the base socket contact 93.
  • a such a transition socket makes it possible to have a bulb having a base corresponding to the diameter of the second threaded tube 92 in a socket having a diameter corresponding to that of the first threaded tube 90.
  • a safety device 2 corresponding to the first embodiment described above, i.e. a disc 20 provided with its contact pad 200 as well as the conductive track 201 and operating exactly as described above.
  • phase contact terminal 120 is replaced by the bottom contact of base 93, while the neutral contact terminal 100 is replaced by the first conductive threaded tube 90.
  • the transition sleeve 9 in FIG. 13 is different from the one just described since the diameter of the first threaded tube 90 corresponds to that of the second threaded tube 92.
  • Such a transition socket would have no use in itself, except unless it has a safety device according to one or other of the embodiments or variants described above. Such a transition socket therefore allows to transform a normal socket in safety socket.
  • the safety device is similar to that described with regard to Figures 4 and 5, except that the phase contact terminal 120 is replaced by the bottom socket contact 93, while the terminal neutral contact 100 is replaced by the first threaded tube driver 90.
  • a transition socket 9 of any type can be equipped with one or more safety devices as described previously, according to one or other of the embodiments or variants mentioned for a safety socket.
  • a transition socket 9 of any type will be provided with a blocking means of known technique, shown diagrammatically at 900 in FIGS. 12 and 13, allowing when socket transition is mounted in another socket, to make this non-removable assembly or more difficult to dismantle.
  • transition sockets fitted with screw caps at transition sockets fitted with bayonet caps.
  • transition sockets allowing to pass from a screw socket to a bayonet fitting or vice versa is as obvious.
  • the safety or transition sockets described here apply particularly well to installations operating at normalized normalized voltage, for example at 220V, but they could also be used for installations operating at higher voltage high or lower, as well as all the usual frequencies.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Glass Compositions (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Connecting Device With Holders (AREA)
  • Control Of Combustion (AREA)
  • Pens And Brushes (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A socket for an electric light is provided including a first electric supply circuit, a second electric supply circuit, and a safety device adapted to detect presence or absence of a light bulb in the socket.

Description

La présente invention concerne une douille de sécurité pour une ampoule électrique à culot à vis ou baïonnette.The present invention relates to a safety socket for an electric bulb with screw base or bayonet.

De nombreux accidents d'électrocution surviennent lorsqu'une douille électrique destinée à recevoir une ampoule électrique n'est pas munie de son ampoule, alors qu'elle est reliée à une ligne d'alimentation sous tension. Les prescriptions de sécurité prévoyant que la tension est appliquée sur le plot de contact central de la douille, un accident peut survenir lorsqu'on introduit à l'intérieur de la douille vide, un doigt ou un outil, comme un tournevis, qui entre en contact avec le plot central de contact.Many electrocution accidents occur when an electric socket intended to receive a bulb is not equipped with its bulb, while it is connected to a live power line. Safety regulations providing that voltage is applied to the central contact pad of the socket, an accident can occur when inserting inside the empty socket, a finger or a tool, such as a screwdriver, which comes into contact with the central contact pad.

Dans le cas relativement courant où, suite à un montage par une personne non qualifiée de la douille ou du câble d'alimentation, la tension de phase est appliquée sur le tube de contact de la douille au lieu du plot central, un accident peut très facilement arriver vu que ce tube de contact est relativement peu protégé depuis l'extérieur, vu que normalement il est relié au conducteur neutre.In the relatively common case where, following an assembly by an unqualified person from the socket or power cable, the phase voltage is applied to the contact tube of the socket at place of the central stud, an accident can very easily happen since it contact tube is relatively unprotected from the outside, since normally it is connected to the neutral conductor.

De même un accident par électrocution peut survenir lorsqu'une ampoule est brisée dans une douille et qu'une portion du circuit électrique de l'ampoule reste sous tension et n'est plus protégée par le verre de l'ampoule. Dans ce cas aussi un contact par un doigt ou un outil peut être dangereux.Similarly, an accident by electrocution can occur when a bulb is broken in a socket and a portion of the bulb electrical circuit remains energized and no longer protected by the glass of the bulb. In this case also a contact by a finger or a tool can be dangerous.

Il existe des douilles munies d'un interrupteur, manoeuvrable à la main, permettant d'interrompre le circuit d'alimentation du plot central de contact. Vu que généralement ces interrupteurs sont à rotation, il est impossible pour l'utilisateur de savoir si le circuit d'alimentation du plot central de contact est interrompu ou non. L'interrupteur d'une telle douille est plutôt destiné à allumer ou éteindre l'ampoule plutôt qu'à fonctionner comme sécurité. There are sockets fitted with a switch, which can be operated by hand, making it possible to interrupt the supply circuit of the pad contact center. Since these switches are generally at rotation, it is impossible for the user to know if the circuit power supply to the central contact pad is interrupted or not. The switch of such a socket is rather intended to light or switch off the bulb rather than operating as a safety device.

La demande EP-A-O.744.792 décrit une douille munie d'un disque de sécurité s'abaissant lors de l'introduction de l'ampoule dans la douille. Le disque de sécurité est muni d'un contact traversant pour assurer la liaison entre le contact de fond de culot de l'ampoule et un plot de contact à la tension de phase. Cette forme d'exécution correspond à l'art antérieur le plus proche de l'invention qui est introduit dans le préambule des revendications indépendantes. Le disque de sécurité est, dans ce document, muni d'un autre contact traversant pour le passage du neutre, ce contact étant mis en liaison avec une lame conductrice flexible appuyant sur le filet du culot de l'ampoule Cette lame conductrice représente un danger pour l'utilisateur, car il est facile, lorsqu'il n'y a aucune ampoule dans la douille, de courber cette lame avec les doigts ou un outil et de la mettre sous tension, notamment dans le cas où les conducteurs de phase et de neutre ont été inversés.EP-A-O.744.792 describes a socket provided with a safety disk lowering when inserting the bulb into the socket. The safety disk is fitted with a through contact for ensure the connection between the bulb base contact and a contact pad at phase voltage. This form of execution corresponds to the closest prior art to the invention which is introduced in the preamble of the independent claims. The safety disk is, in this document, provided with another contact through for the passage of neutral, this contact being connected with a flexible conductive blade pressing on the thread of the base the bulb This conductive strip represents a danger for user because it is easy when there is no light bulb in the socket, bend this blade with your fingers or a tool and energize, especially in the case where the conductors of phase and neutral have been reversed.

La demande EP-A-0.027.244 décrit une douille munie d'un dispositif de sécurité de construction très compliquée, donc peu fiable d'utilisation. Comme précédemment, une lame conductrice mobile est chargée d'assurer la liaison au neutre avec le même inconvénient que mentionné précédemment.Application EP-A-0.027.244 describes a socket provided with a very complicated, therefore unreliable construction safety device use. As before, a movable conductive blade is responsible for ensuring the connection to neutral with the same drawback as previously mentioned.

Un premier but de l'invention est de proposer une douille de sécurité pour une ampoule électrique munie d'un dispositif de sécurité permettant d'empêcher un contact accidentel avec n'importe quelle partie conductrice accessible de la douille.A first object of the invention is to provide a socket for safety for a light bulb fitted with a safety device to prevent accidental contact with any conductive part accessible from the socket.

Un deuxième but de l'invention est de proposer que la douille de sécurité précédente soit munie d'un dispositif de sécurité apte à fonctionner quelle que soit la manière dont ladite douille est reliée au câble d'alimentation.A second object of the invention is to propose that the previous safety socket is fitted with a safety device capable of operating regardless of how said socket is connected to the power cable.

Un autre but de l'invention est de proposer une douille de sécurité munie d'un dispositif de sécurité de conception simple et fiable à l'utilisation. Another object of the invention is to provide a socket for safety equipped with a safety device of simple and reliable design in use.

Un autre but de l'invention est de proposer une douille de sécurité munie d'un dispositif de sécurité à sécurité redondante.Another object of the invention is to provide a socket for safety fitted with a redundant safety safety device.

Encore un autre but de l'invention est de proposer que la douille de sécurité soit munie d'un dispositif de sécurité verrouillable.Yet another object of the invention is to propose that the safety socket is fitted with a lockable safety device.

On connaít par ailleurs des douilles de transition permettant d'installer une ampoule munie d'un culot ayant un diamètre déterminé dans une douille ayant un diamètre égal ou différent.We also know transition sockets allowing install a bulb with a base having a determined diameter in a socket having an equal or different diameter.

Sur cette base, un autre but de l'invention est de proposer une douille de transition munie de l'un ou l'autre des dispositifs de sécurité précédents.On this basis, another object of the invention is to propose a transition sleeve fitted with one or other of the previous security.

Ces buts sont obtenus par une douille de sécurité telle que définie dans la revendication 1, des formes d'exécution particulières ou variantes étant décrites dans les revendications dépendantes.These purposes are achieved by a safety socket such as defined in claim 1, particular or alternative embodiments being described in the dependent claims.

Plusieurs formes d'exécution et variantes d'une douille de sécurité selon l'invention sont décrites en détail ci-dessous, cette description, mentionnant encore d'autres avantages de l'invention, étant à considérer en regard du dessin annexé comportant les figures où:

  • la figure 1 montre schématiquement une portion en coupe d'une douille munie d'un dispositif de sécurité selon la présente invention à l'état de déconnexion,
  • la figure 2 montre schématiquement la même portion de douille, à l'état connecté lorsqu'une ampoule a été introduite dans la douille,
  • la figure 3 montre schématiquement une coupe selon la ligne III-III de la figure 1,
  • la figure 4 montre schématiquement une,portion en coupe d'une douille munie d'un dispositif de sécurité ne faisant pas partie de l'invention à l'état de déconnexion,
  • la figure 4A montre un détail de la figure précédente,
  • la figure 5 montre schématiquement la même portion de douille, à l'état connecté lorsqu'une ampoule a été introduite dans la douille,
  • la figure 6 montre schématiquement une portion en coupe d'une douille munie d'un dispositif de sécurité selon une autre forme d'exécution de la présente invention à l'état de déconnexion,
  • la figure 7 montre schématiquement une portion en coupe d'une douille munie d'un dispositif de sécurité selon encore une autre forme d'exécution à l'état de déconnexion,
  • la figure 8 montre schématiquement une première version d'un dispositif de verrouillage d'un dispositif de sécurité pour une douille,
  • la figure 9 montre schématiquement, selon une coupe partielle en élévation, une deuxième version d'un dispositif de verrouillage d'un dispositif de sécurité pour une douille,
  • la figure 10 est une coupe partielle en plan selon la ligne X-X de la figure précédente,
  • la figure 11 montre schématiquement une douille qui n'est pas comprise dans l'étendue de la présente invention, munie de deux dispositifs de sécurité pouvant être ajoutés à la douille de la présente invention.
  • la figure 12 montre schématiquement une douille de transition munie d'un dispositif de sécurité, et
  • la figure 13 montre schématiquement une autre douille de transition aussi munie d'un dispositif de sécurité.
    • Several embodiments and variants of a safety socket according to the invention are described in detail below, this description, mentioning still other advantages of the invention, being to be considered with regard to the appended drawing comprising the figures or:
  • FIG. 1 schematically shows a sectional section of a socket fitted with a safety device according to the present invention in the disconnected state,
  • FIG. 2 schematically shows the same portion of socket, in the connected state when a bulb has been inserted into the socket,
  • FIG. 3 schematically shows a section along line III-III of FIG. 1,
  • FIG. 4 schematically shows a sectional portion of a socket fitted with a safety device not forming part of the invention in the disconnected state,
  • FIG. 4A shows a detail of the previous figure,
  • FIG. 5 schematically shows the same portion of socket, in the connected state when a bulb has been inserted into the socket,
  • FIG. 6 schematically shows a sectional section of a socket provided with a safety device according to another embodiment of the present invention in the disconnected state,
  • FIG. 7 schematically shows a sectional section of a socket provided with a safety device according to yet another embodiment in the disconnected state,
  • FIG. 8 schematically shows a first version of a locking device for a safety device for a socket,
  • FIG. 9 schematically shows, in a partial section in elevation, a second version of a locking device for a safety device for a socket,
  • FIG. 10 is a partial plan section along line XX of the previous figure,
  • FIG. 11 schematically shows a socket which is not included in the scope of the present invention, provided with two safety devices which can be added to the socket of the present invention.
  • FIG. 12 schematically shows a transition socket fitted with a safety device, and
  • FIG. 13 schematically shows another transition socket also provided with a safety device.

    • Les douilles et dispositifs mentionnés ci-dessous et montrés sur les figures ne sont décrits et représentés que de manière très schématique, essentiellement afin de faire comprendre leur fonctionnement. Les détails de construction et d'exécution, notamment les liaisons électriques entre les divers éléments, ne sont pas décrits dans tous leurs détails étant à portée de l'homme du métier.The sockets and devices mentioned below and shown in the figures are described and represented only in a very schematic, basically in order to make their operation. Construction and execution details, including the electrical connections between the various elements, are not described in all their details being within reach of the skilled person.

    De manière conventionnelle, la douille 1 de la figure 1, pour ampoule à culot à vis, comprend un tube métallique fileté 10, inséré dans un support isolant 11 ainsi qu'un plot de contact central 12. Une première borne de contact 100 reçoit le conducteur de neutre du câble d'alimentation de la douille (non représenté), alors qu'une deuxième borne de contact 120 reçoit le conducteur de phase. Habituellement dans les douilles conventionnelles, la borne de contact 120 est directement reliée au plot de contact central 12 alors que la borne de contact 100 est reliée au tube métallique 10.Conventionally, the socket 1 of FIG. 1, for screw base bulb, includes threaded metal tube 10, inserted in an insulating support 11 as well as a central contact pad 12. A first contact terminal 100 receives the neutral conductor of the cable of the socket (not shown), while a second contact terminal 120 receives the phase conductor. Habitually in conventional sockets, the contact terminal 120 is directly connected to the central contact pad 12 while the terminal contact 100 is connected to metal tube 10.

    Les figures 1, 2 et 3 montrent une douille à vis 1 munie d'un dispositif de sécurité 2 selon une première forme d 'exécution, constitué d'un disque de sécurité isolant 20. Dans cette première variante, le plot central de contact 12 est directement relié à la borne 120. Le disque 20 est constitué essentiellement en un matériau isolant et est muni de plusieurs extensions radiales 21, également isolantes, chacune desdites extensions 21 étant logée dans un évidemment 110 du support isolant 11 et/ou du tube fileté 10. Un moyen à ressort 22 est disposé entre le fond de la douille 1 et le disque 20, agissant de manière à éloigner le disque 20 du fond de la douille, respectivement du plot central de contact 12. Des épaulements 111 limitent les évidements 110 vers l'extérieur de la douille, empêchant le disque 20 de sortir de la douille. Le disque isolant 20 comprend une pastille de contact 200, disposée au centre du disque 20 et traversant le disque selon la direction de l'axe longitudinal de la douille.Figures 1, 2 and 3 show a screw socket 1 provided with a safety device 2 according to a first embodiment, consisting of an insulating safety disc 20. In this first variant, the central contact pad 12 is directly connected to the terminal 120. The disc 20 consists essentially of an insulating material and is provided with several radial extensions 21, also insulating, each of said extensions 21 being housed in an obviously 110 of the insulating support 11 and / or of the threaded tube 10. A spring means 22 is disposed between the bottom of the sleeve 1 and the disc 20, acting so as to move the disc 20 away from the bottom of the socket, respectively of the central contact pad 12. Shoulders 111 limit the recesses 110 towards the outside of the sleeve, preventing the disc 20 to come out of the socket. The insulating disc 20 comprises a pellet of contact 200, placed in the center of the disc 20 and passing through the disc along the direction of the longitudinal axis of the sleeve.

    Le disque 20 comprend, en outre une piste conductrice 201 sur sa face inférieure, isolée relativement à la pastille 200. Un tracé possible de cette piste conductrice 201 est visible sur la figure 3. Le fond de la douille comprend, en plus du plot central 12, relié à la borne 120, deux plots 13 et 14 disposés de part et d'autre du plot central 12, en regard de portions de la piste conductrice 201. Le plot 14 est relié à la borne de neutre 100, alors que le plot 13 est relié au tube fileté 10.The disc 20 further comprises a conductive track 201 on its underside, isolated relative to the patch 200. A trace possible of this conductive track 201 is visible in Figure 3. The bottom of the socket comprises, in addition to the central stud 12, connected to the terminal 120, two pads 13 and 14 arranged on either side of the central pad 12, opposite portions of the conductive track 201. The stud 14 is connected to the neutral terminal 100, while the stud 13 is connected to the threaded tube 10.

    On comprend ainsi que lorsqu'il n'y a pas d'ampoule dans la douille, comme on le voit à la figure 1, le disque 20 est repoussé par le ressort 22, les extensions 21 étant guidées par les évidements 110 et venant en butée contre les épaulements 111, de manière à fermer le fond de la douille, soit d'empêcher que lorsqu'on introduit un doigt ou un outil dans la douille, il n'entre directement en contact avec le plot central 12 sous tension. De la même manière, le circuit de neutre reliant le tube fileté et la borne 100 est interrompu, empêchant en cas d'inversion de la phase et du neutre au montage, qu'une tension apparaisse sur la portion du tube fileté 10 facilement accessible depuis l'extérieur de la douille.It is thus understood that when there is no bulb in the sleeve, as seen in Figure 1, the disc 20 is pushed back by the spring 22, the extensions 21 being guided by the recesses 110 and coming into abutment against the shoulders 111, so as to close the bottom of the socket, either to prevent that when a finger is inserted or a tool in the socket, it does not come into direct contact with the stud central 12 powered up. Similarly, the neutral circuit connecting the threaded tube and terminal 100 is interrupted, preventing in case phase and neutral reversal during assembly, that a voltage appears on the portion of the threaded tube 10 easily accessible from the outside of the socket.

    Les parties métalliques facilement accessibles depuis l'extérieur de la douille 1, pastille conductrice 200 et tube conducteur 10, sont ainsi complètement isolées galvaniquement du réseau.Metal parts easily accessible from outside of socket 1, conductive patch 200 and conductive tube 10, are thus completely galvanically isolated from the network.

    En vissant une ampoule 3 dans la douille, comme on le voit à la figure 2, le contact de fond de culot 31 de son culot 30 repousse le disque 20 vers le fond de la douille, jusqu'à ce que la pastille de contact 200 entre en contact avec le plot central 12 et que simultanément la piste conductrice 201 entre en contact avec les deux plots de contact 13 et 14.By screwing a bulb 3 into the socket, as seen in Figure 2, the base bottom contact 31 of its base 30 pushes the disc 20 towards the bottom of the socket, until the contact pad 200 comes into contact with the central stud 12 and that simultaneously the conductive track 201 comes into contact with the two contact pads 13 and 14.

    Ainsi, le passage du courant est établi, à partir de la borne de contact 120 sous tension, vers le plot de contact 12 et via la pastille de contact 200 vers le contact de fond de culot 31, le circuit se refermant à partir du culot 30 vers le tube fileté 10 relié au plot de contact 13, puis via la piste conductrice 201 vers le plot de contact 14, lui même relié à la borne de contact 100, au potentiel de neutre.Thus, the current flow is established, from the terminal of contact 120 energized, to contact pad 12 and via the contact patch contact 200 to the base contact 31, the circuit closing at from the base 30 to the threaded tube 10 connected to the contact pad 13, then via the conductive track 201 towards the contact pad 14, itself connected to contact terminal 100, at neutral potential.

    Des variantes d'exécution sont évidemment possibles pour cette première forme d'exécution du dispositif de sécurité. Par exemple le disque 20 a été représenté sur la figure 3 avec quatre extensions radiales 21, mais il est évident qu'il pourrait en comprendre un nombre différent. De préférence le disque 20 sera muni d'au moins deux extensions radiales 21. De même les moyens à ressort 22 peuvent être disposés différemment de ce qui est représenté ici ou remplacés par tout moyen élastique remplissant la même fonction que celle décrite. D'autre part, les deux plots 13 et 14 peuvent être disposés en des endroits quelconques du fond de la douille, la piste conductrice 201 ayant une forme adaptée pour établir le contact entre ces deux plots.Variants of execution are obviously possible for this first embodiment of the security device. for example the disc 20 has been represented in FIG. 3 with four extensions radials 21, but it is obvious that he could understand a number of them different. Preferably the disc 20 will be provided with at least two radial extensions 21. Similarly, the spring means 22 can be arranged differently from what is shown here or replaced by any elastic means fulfilling the same function as that described. On the other hand, the two studs 13 and 14 can be arranged in any places at the bottom of the socket, the conductive track 201 having a suitable shape for establishing contact between these two studs.

    Un tel dispositif de sécurité, selon la présente invention, peut aussi être adapté pour une douille destinée à recevoir une ampoule à culot à baïonnette. On connaít généralement deux types de douilles pour ampoules à baïonnette : un premier type, généralement utilisé pour une tension alternative, dans lequel on a un plot central de contact, semblable au plot 12 décrit plus haut et un tube de contact lisse ayant électriquement la même fonction que le tube fileté 10 décrit précédemment et un deuxième type, utilisé généralement pour une tension continue, comprenant deux plots de contact disposés côte à côte au fond de la douille. Pour les douilles du premier type (plot central et tube de contact), la construction et le fonctionnement du dispositif de sécurité sont semblables à ce qui à été décrit ci-dessus. Pour les douilles du deuxième type (deux plots de contact côte à côte), le disque 20 comportera deux pastilles de contact traversantes, chacune étant apte à mettre en contact l'un des plots avec le contact de fond de culot correspondant du culot de l'ampoule.Such a safety device, according to the present invention, can also be adapted for a socket intended to receive a bulb with bayonet base. We know generally two types of sockets for bayonet bulbs: one first type, generally used for an alternating voltage, in which has a central contact pad, similar to pad 12 described more high and a smooth contact tube having electrically the same function as the threaded tube 10 described above and a second type, generally used for direct voltage, comprising two contact pads arranged side by side at the bottom of the socket. For sockets of the first type (central stud and contact tube), the construction and operation of the safety device are similar to what has been described above. For the sockets of the second type (two contact pads side by side), the disc 20 will have two through contact pads, each one suitable for contact one of the studs with the corresponding base bottom contact of the base of the bulb.

    Un dispositif de sécurité qui ne fait pas partie de la présente invention en tant que tel est visible sur les figures 4, 4A et 5.A safety device which is not part of the present invention as such is visible in Figures 4, 4A and 5.

    Dans ce dispositif de sécurité, la liaison électrique entre le tube fileté ou conducteur 10 et la borne de contact 100 n'est pas coupée par le mouvement du disque 20, comme décrit précédemment, mais par un moyen de coupure auxiliaire indépendant 4.In this safety device, the electrical connection between the threaded or conductive tube 10 and the contact terminal 100 is not cut by the movement of the disc 20, as described above, but by an independent auxiliary cut-off means 4.

    Ce moyen de coupure auxiliaire 4 est constitué, comme on le voit aux figures 4, 4A et 5, d'un levier ou poussoir 40, en matériau isolant, apte à être déplacé radialement dans un perçage 112 aménagé dans le support isolant 11 et le tube conducteur 10. Le perçage 112 débouche dans un logement 113 aménagé dans le support isolant 11. La portion arrière du poussoir 40 comprend une pastille ou un élément de contact 400, une bague d'arrêt 41 et un moyen élastique, par exemple un ressort 42, apte à pousser radialement le poussoir 40 en direction de l'intérieur du tube conducteur 10. Le mouvement de déplacement du poussoir 40 est limité par la bague d'arrêt 41. Une deuxième pastille ou élément de contact 401 est disposée dans le logement 113, en face de la pastille 400. L'une des deux pastilles, de préférence la pastille 401, est directement reliée électriquement à la borne de contact 100, alors que l'autre pastille, de préférence la pastille 400, est directement reliée électriquement au tube conducteur 10.This auxiliary breaking means 4 is constituted, as is see in Figures 4, 4A and 5, a lever or pusher 40, made of material insulator, capable of being moved radially in a hole 112 arranged in the insulating support 11 and the conductive tube 10. The bore 112 opens into a housing 113 arranged in the insulating support 11. The rear portion of the pusher 40 comprises a patch or an element contact 400, a stop ring 41 and an elastic means, by example a spring 42, capable of pushing the pusher 40 radially in direction of the interior of the conductive tube 10. The movement of movement of the pusher 40 is limited by the stop ring 41. A second pad or contact element 401 is arranged in the housing 113, opposite the pad 400. One of the two pads, of preferably the pad 401, is directly electrically connected to the contact terminal 100, while the other pad, preferably the 400 chip, is directly electrically connected to the conductive tube 10.

    Ainsi, comme on le voit à la figure 4A, lorsque aucune ampoule n'est introduite dans la douille 1, le ressort 42 repousse le poussoir 40 vers l'intérieur, séparant de ce fait les deux pastilles ou éléments de contact 400 et 401 interrompant le circuit électrique du neutre reliant la borne de contact 100 au tube conducteur 10. Le circuit de phase est interrompu comme précédemment par l'élévation du disque isolant 20.Thus, as seen in Figure 4A, when no bulb is not inserted into the socket 1, the spring 42 pushes the pusher 40 inwards, thereby separating the two pellets or contact elements 400 and 401 interrupting the electrical circuit of the neutral connecting the contact terminal 100 to the conductive tube 10. The circuit phase is interrupted as before by the elevation of the insulating disc 20.

    Comme représenté à la figure 5, lorsqu'une ampoule 3 est introduite dans la douille 1, l'introduction du culot dans le tube 10, repousse d'une part le disque isolant 20 pour l'établissement du circuit de phase, comme décrit précédemment et d'autre part repousse radialement vers l'extérieur le poussoir 40, établissant ainsi le contact électrique du circuit de neutre entre les pastilles ou éléments de contact 400 et 401.As shown in Figure 5, when a bulb 3 is introduced into the socket 1, the introduction of the base into the tube 10, on the one hand pushes back the insulating disc 20 to establish the circuit phase, as described above and on the other hand repels radially outward the pusher 40, thus establishing contact neutral circuit between the pads or elements of contact 400 and 401.

    On a donc établissement du circuit de phase et du circuit de neutre lors de l'introduction d'une ampoule dans la douille, de même que coupure de ces deux circuits lors du retrait de l'ampoule, par deux moyens de coupure indépendants.We therefore established the phase circuit and the neutral when a bulb is inserted into the socket, likewise that these two circuits are cut when removing the bulb, by two independent switching means.

    Une autre forme d'exécution d'une douille de sécurité selon la présente invention est visible à la figure 6.Another embodiment of a safety socket according to the present invention is visible in Figure 6.

    Cette douille de sécurité comprend les dispositifs décrits précédemment, aménagés de manière à ce que l'on ait une double coupure aussi bien sur le circuit de phase que sur le circuit de neutre. Une telle disposition peut être utile dans certains cas où la douille de sécurité est utilisée en atmosphère ou environnement humide.This safety socket includes the devices described previously, arranged so that there is a double cut both on the phase circuit and on the neutral circuit. Such an arrangement may be useful in certain cases where the socket Safety is used in a humid atmosphere or environment.

    La douille est semblable à celle décrite précédemment en regard des figures 1 à 3, si ce n'est qu'elle comporte en plus un dispositif de coupure auxiliaire 4 comme décrit en regard des figures 4 et 5 avec la différence que ce dispositif de coupure auxiliaire est intercalé entre la borne de contact 120 et le plot de contact 12. Ainsi, on a une double coupure du circuit de phase par les pastilles ou éléments de contact 400 et 401 ainsi que par le plot de contact 12 et la pastille de contact 200 et une double coupure du circuit de neutre par le plot 13 et la piste conductrice 201 ainsi qu'entre la même piste conductrice et le plot de contact 14.The socket is similar to that described previously in look at Figures 1 to 3, except that it also has a auxiliary breaking device 4 as described with reference to FIGS. 4 and 5 with the difference that this auxiliary cut-off device is interposed between the contact terminal 120 and the contact pad 12. Thus, there is a double break of the phase circuit by the pads or contact elements 400 and 401 as well as by the contact pad 12 and the contact pad 200 and double breaking of the neutral circuit by the pad 13 and the conductive track 201 as well as between the same track conductive and the contact pad 14.

    La figure 7 montre encore une autre forme d'exécution d'une douille de sécurité dans laquelle le circuit de phase est sécurisé comme précédemment par un premier dispositif de coupure auxiliaire 4 suivi du, disque 20, alors qu'un deuxième dispositif de coupure auxiliaire 4, est intercalé dans le circuit de neutre. On obtient ainsi une sécurité maximum, notamment dans le cas où le disque 20 aurait été forcé ou cassé ainsi que lorsque la douille travaille en atmosphère ou environnement humide.Figure 7 shows yet another embodiment of a safety socket in which the phase circuit is secured as previously by a first auxiliary breaking device 4 followed du, disc 20, while a second auxiliary cut-off device 4, is inserted in the neutral circuit. This provides security maximum, in particular in the case where the disc 20 has been forced or broken as well as when the socket works in an atmosphere or humid environment.

    Comme pour la première forme d'exécution du dispositif de sécurité décrite, les autres forme d'exécution mentionnées peuvent être adaptées aux douilles à baïonnette de l'un ou de l'autre des types décrits.As with the first embodiment of the security described, the other embodiments mentioned may be suitable for bayonet sockets of either type described.

    D'autres dispositions constructives que celles décrites ci-dessus peuvent être envisagées pour un dispositif de sécurité 4 utilisé pour une douille selon les formes d'exécution proposées. Par exemple les moyens à ressort 42 peuvent être disposés différemment de ce qui est montré sur la figure, pouvant être remplacés par tout dispositif élastique ayant un effet équivalent ou alors le même effet de connexion et déconnexion de deux pastilles de contact peut être obtenu par un levier basculant dont une extrémité fait saillie dans le tube fileté ou tout dispositif d'actionnement isolé ayant un effet équivalent. D'autre part, le tube conducteur 10, fileté ou lisse, peut être remplacé par un tube isolant ayant la fonction de fixation de l'ampoule, alors que la fonction d'alimentation électrique peut être obtenue par une languette ou toute portion conductrice disposée sur ledit tube isolant et apte à entrer en contact avec le culot d'une ampoule introduite dans la douille.Other constructive arrangements than those described above can be considered for a safety device 4 used for a socket according to the proposed embodiments. for example the spring means 42 may be arranged differently from what is shown in the figure, can be replaced by any device elastic having an equivalent effect or then the same effect of connection and disconnection of two contact pads can be obtained by a tilting lever, one end of which projects into the threaded tube or any insulated actuator having an effect equivalent. On the other hand, the conductive tube 10, threaded or smooth, can be replaced by an insulating tube having the function of fixing the bulb, while the power supply function can be obtained by a tab or any conductive portion disposed on said insulating tube and able to come into contact with the base of a bulb inserted into the socket.

    Si une douille de sécurité munie d'un dispositif selon l'une ou l'autre des formes d'exécution présentées offre déjà un premier niveau de sécurité en empêchant un contact accidentel direct avec une portion conductrice sous tension de la douille, un dispositif complémentaire de verrouillage du disque 20 en position éloignée du plot central 12 peut être approprié de manière à éviter que le disque 20 ne puisse être déplacé en l'enfonçant avec un doigt ou un outil, sans qu'une ampoule soit introduite dans la douille.If a safety socket fitted with a device according to one or the other of the embodiments presented already offers a first level safety by preventing direct accidental contact with a portion conductive under the socket, a complementary device for locking the disc 20 in a position remote from the central stud 12 can be suitable so as to avoid that the disc 20 cannot be moved by pushing it in with a finger or a tool, without a light bulb is introduced into the socket.

    Une première version d'un dispositif de verrouillage 5 est représentée schématiquement en plan sur la figure 3 et en élévation sur la figure 8. Le dispositif de verrouillage 5 est constitué ici d'un levier 50 monté sur un pivot 51 apte à pivoter autour d'un axe 511 perpendiculaire à l'axe longitudinal de la douille ainsi qu'à coulisser le long dudit axe 511. Le levier 50 comprend un épaulement 52 comprenant un plan incliné 520 et un méplat 521 de même qu'un bouton de poussée 510 faisant saillie hors de la paroi externe de la douille. Le dispositif est complété d'un premier moyen élastique, par exemple un ressort 53, schématisé ici par une lame ressort, apte à maintenir le levier 50 en position de verrouillage parallèle à l'axe longitudinal de la douille, ainsi que d'un deuxième moyen élastique, par exemple un ressort 54, apte à repousser radialement le levier 50, respectivement le bouton de poussée 510 vers l'extérieur. Le levier 50 est apte à pivoter d'un angle déterminé autour de l'axe 511 et à coulisser d'une valeur déterminée, dans un logement 114 aménagé à cet effet dans le support isolant 11. L'extension radiale 21 la plus proche du dispositif de verrouillage 5 comprend une échancrure 210, tournée du côté du dispositif de verrouillage et de largeur légèrement supérieure à l'épaisseur du levier 50.A first version of a locking device 5 is shown schematically in plan in Figure 3 and in elevation in FIG. 8. The locking device 5 here consists of a lever 50 mounted on a pivot 51 able to pivot around an axis 511 perpendicular to the longitudinal axis of the socket as well as sliding the along said axis 511. The lever 50 comprises a shoulder 52 comprising an inclined plane 520 and a flat 521 as well as a push button 510 protruding from the outer wall of the socket. The device is completed with a first elastic means, by example a spring 53, shown schematically here by a leaf spring, suitable for keep the lever 50 in the locked position parallel to the axis longitudinal of the sleeve, as well as a second elastic means, for example a spring 54, capable of pushing the lever 50 radially, push button 510 outwards respectively. Leverage 50 is able to pivot by a determined angle around the axis 511 and to slide of a determined value, in a housing 114 fitted out this effect in the insulating support 11. The most radial extension 21 close to the locking device 5 comprises a notch 210, turned towards the side of the locking device and slightly wider greater than the thickness of the lever 50.

    Lorsque une ampoule est disposée dans la douille et qu'elle en est retirée en la dévissant, le disque 20 accompagne le mouvement de retrait du culot de l'ampoule, étant pressé par le ressort 22 vu à la figure 1. Lors de ce déplacement, l'extension radiale 21 rencontre le plan incliné 520 et fait pivoter le levier 50 dans le sens indiqué par les flèches sur la figure 8. Lorsque les extensions radiales 21 du disque 20 arrivent en butée contre les épaulements 111, le levier 50 revient en position de repos sous l'action de la lame ressort 53, le méplat 521 empêchant alors un nouveau déplacement du disque 20 vers le fond de la douille en retenant la portion extrême de l'extension radiale 21, comme on le voit en plan sur la portion inférieure de la figure 3. Le disque 20 est ainsi verrouillé en position telle qu'un contact avec le plot central de contact 12 est impossible. Afin de permettre d'installer une nouvelle ampoule dans la douille, il est nécessaire de déverrouiller le disque 20. Pour ceci, il suffit d'appuyer sur le bouton de poussée 510, ce qui pousse le levier 50 vers l'échancrure 210, comme on le voit sur la portion supérieure de la figure 3. Ainsi le disque 20 est déverrouillé et peut s'abaisser vers le fond de la douille durant l'introduction de l'ampoule afin de permettre la mise en contact du plot central 12 avec le contact de fond de culot de l'ampoule, respectivement les plots 13 et 14 avec la piste conductrice 201. De préférence on disposera deux dispositifs de verrouillage 5, chacun agissant sur une extension radiale, de préférence opposée relativement à l'axe longitudinal de la douille. De cette manière, le disque 20 est maintenu par deux extensions opposées, ce qui évite de le biaiser, le déverrouillage du disque 20 nécessitant alors d'agir en opposition en deux points opposés de la douille.When a bulb is placed in the socket and it is removed by unscrewing it, the disc 20 accompanies the movement removing the bulb base, being pressed by the spring 22 seen in the Figure 1. During this movement, the radial extension 21 meets the inclined plane 520 and rotates the lever 50 in the direction indicated by the arrows in FIG. 8. When the radial extensions 21 of the disc 20 come into abutment against the shoulders 111, the lever 50 returns rest position under the action of the leaf spring 53, the flat 521 preventing a further displacement of the disc 20 towards the bottom of the sleeve retaining the end portion of the radial extension 21, as seen in plan on the lower portion of figure 3. The disc 20 is thus locked in position such that contact with the stud contact center 12 is impossible. In order to allow the installation of a new bulb in the socket, it is necessary to unlock the disc 20. For this, simply press the push button 510, which pushes the lever 50 towards the notch 210, as seen on the upper portion of FIG. 3. Thus the disc 20 is unlocked and can be lowered towards the bottom of the socket during insertion of the bulb to allow the central pad 12 to come into contact with the bulb base contact, the studs 13 and respectively 14 with the conductive track 201. Preferably there will be two locking devices 5, each acting on a radial extension, preferably opposite relative to the longitudinal axis of the sleeve. In this way, the disc 20 is held by two extensions opposite, which avoids biasing it, unlocking the disc 20 then requiring to act in opposition at two opposite points of the socket.

    Selon une autre version d'un dispositif de verrouillage visible sur les figures 9 et 10, le dispositif de verrouillage 6 fonctionne de manière assez semblable à celle qui vient d'être décrite ci-dessus, la différence étant que le déverrouillage se fait automatiquement lors de l'introduction d'une ampoule dans la douille. Pour ceci, le dispositif 6 est muni d'un poussoir 60, semblable au poussoir 40 décrit précédemment en regard de la figure 4, l'extrémité du poussoir 60 disposée dans l'évidemment 113 portant un levier 61 muni comme le levier 50 vu plus haut d'un méplat d'arrêt. Dans ce cas, le déplacement du levier 61 pour déverrouiller le disque 20 se fait radialement vers l'extérieur.According to another version of a visible locking device in FIGS. 9 and 10, the locking device 6 operates from somewhat similar to that just described above, the difference being that the unlocking is done automatically during the introduction of a bulb into the socket. For this, the device 6 is provided with a pusher 60, similar to the pusher 40 described previously with reference to FIG. 4, the end of the pusher 60 arranged in the recess 113 carrying a lever 61 provided as the lever 50 seen above from a stop flat. In this case, the displacement of the lever 61 to unlock the disc 20 is made radially towards outside.

    En introduisant une ampoule dans la douille, le culot vient pousser le poussoir 60 vers l'extérieur, en opposition au moyen élastique représenté par le ressort 62, comme décrit plus haut en regard des figures 4 et 5. Le levier 61 est ainsi déplacé vers l'extrémité libre de l'extension 21 ou l'échancrure 210 qui y est aménagée, de manière à libérer l'extension 21 retenue par le méplat, respectivement permettre que le disque 20 se déplace vers le fond de la douille. Lorsqu'on retire l'ampoule, le disque 20 est poussé par le ressort 22 jusqu'à ce que les extensions 21 arrivent en butée contre les épaulements 111, le retrait complet de l'ampoule libérant le poussoir 60, qui sous l'effet du ressort 62 vient bloquer le prolongement 21 sous le méplat du levier 61. Selon cette dernière version, les moyens de verrouillage 6 sont actionnés automatiquement lors de l'introduction ou du retrait d'une ampoule et ne nécessitent donc aucune manipulation pour leur actionnement.By inserting a bulb into the socket, the base comes push the pusher 60 outward, in opposition to the means elastic represented by the spring 62, as described above in see Figures 4 and 5. The lever 61 is thus moved towards the end free of extension 21 or the notch 210 which is fitted therein, of so as to release the extension 21 retained by the flat, respectively allow the disc 20 to move towards the bottom of the sleeve. When the bulb is removed, the disc 20 is pushed by the spring 22 until the extensions 21 come up against the shoulders 111, the complete withdrawal of the bulb releasing the pusher 60, which under the effect of the spring 62 comes to block the extension 21 under the flat part of the lever 61. According to this latest version, the means of lock 6 are activated automatically upon insertion or removing a bulb and therefore do not require any manipulation for their actuation.

    Il est évident que les arêtes des éléments du dispositif de verrouillage en contact opérationnel, par exemple l'arête de l'extension radiale 21 en contact avec le levier 50 ou 61 selon l'une ou l'autre des versions décrites, sont formées, par exemple biseautées ou arrondies, de manière à faciliter le glissement de ces éléments entre eux.It is obvious that the edges of the elements of the device for locking in operational contact, for example the edge of the radial extension 21 in contact with the lever 50 or 61 according to one or the other of the versions described, are formed, for example bevelled or rounded, so as to facilitate the sliding of these elements between them.

    D'autres versions ou variantes du dispositif de verrouillage peuvent être envisagées. Par exemple, les portions supérieures des évidements de guidage 113 peuvent comprendre chacune un évidemment supplémentaire, disposé sur une portion de périphérie de la douille, perpendiculairement à l'évidement de guidage correspondant, le disque 20 comportant en outre au moins un levier de commande, par exemple un prolongement radial d'une extension 21, accessible depuis l'extérieur de la douille, ledit levier permettant, lorsque le disque est en position de butée dans la portion supérieure des évidements de guidage, de le faire pivoter d'une portion de tour de manière à engager les prolongements dans les évidements supplémentaires, de manière à verrouiller le disque, un pivotement en sens contraire permettant de le déverrouiller. Ledit levier peut être actionné manuellement ou à l'aide d'un outil. De même en variante au poussoir 60 des figures 9 et 10, on pourrait avoir par exemple un levier pivotant, commandant le levier 61, et dont une extrémité ferait saillie dans le tube conducteur fileté 10 ou tout autre dispositif d'actionnement isolé.Other versions or variants of the locking device can be considered. For example, the upper portions of guide recesses 113 may each include a obviously additional, arranged on a periphery portion of the bush, perpendicular to the guide recess corresponding, the disc 20 further comprising at least one lever controls, for example a radial extension of an extension 21, accessible from outside the socket, said lever allowing, when the disc is in the stop position in the upper portion guide recesses, to rotate it by a portion of a tower so as to engage the extensions in the recesses additional, so as to lock the disc, pivoting in opposite direction to unlock it. Said lever can be operated manually or using a tool. Similarly as a variant pusher 60 of Figures 9 and 10, we could have for example a lever pivoting, controlling the lever 61, and one end of which would protrude in the threaded conductive tube 10 or any other device isolated actuation.

    Il est évident que les versions décrites ci-dessus des moyens de verrouillage du disque 20 peuvent aussi être adaptés à un disque 20 disposé dans une douille à baïonnette selon l'un ou l'autre des types mentionnés plus haut.It is evident that the versions described above of the means of disc lock 20 can also be adapted to disc 20 arranged in a bayonet socket in either type mentioned above.

    On a vu que le dispositif de sécurité 4 comprenant, comme décrit plus haut, un poussoir 40 en saillie à l'intérieur du tube conducteur 10 est de construction assez semblable au dispositif de verrouillage 6 qui vient d'être décrit. On peut donc avantageusement regrouper ces deux dispositifs sous un dispositif commun, l'actionnement du poussoir par l'introduction d'un culot d'ampoule assurant d'une part un contact électrique et déverrouillant d'autre part le disque isolant 20.We have seen that the safety device 4 comprising, as described above, a pusher 40 projecting inside the tube conductor 10 is fairly similar in construction to the lock 6 which has just been described. We can therefore advantageously combine these two devices under a common device, actuation of the pusher by the introduction of a bulb base ensuring on the one hand an electrical contact and unlocking on the other hand the insulating disc 20.

    La figure 11, qui représente une douille qui n'est pas comprise dans l'invention en tant que telle en raison de l'absence du disque 20, montre un dispositif de sécurité 7 pouvant être ajouté à la douille de la présente invention, destiné à détecter la présence ou l'absence d'une ampoule 3 dans la douille. Dans ce cas, au lieu de détecter la présence ou l'absence du culot 30 dans le tube fileté comme décrit jusqu'à présent le dispositif 7 détecte la présence ou l'absence du verre 32 de l'ampoule 3. Ce dispositif de sécurité est particulièrement utile afin d'empêcher qu'une portion de l'ampoule 3 reste sous tension lorsque le verre 32 est brisé, notamment par vandalisme.FIG. 11, which shows a socket which is not included in the invention as such due to the absence of the disc 20, shows a safety device 7 which can be added to the socket of the present invention, intended at detect the presence or absence of a bulb 3 in the socket. In this case, instead of detecting the presence or absence of the base 30 in the threaded tube as described so far the device 7 detects the presence or absence of the glass 32 of the bulb 3. This device security is especially helpful in preventing a portion of the bulb 3 remains energized when the glass 32 is broken, in particular by vandalism.

    Le dispositif de sécurité 7 est constitué ici d'au moins un levier ou poussoir 70, apte sous l'effet d'un moyen élastique, par exemple un ressort 71, à venlr détecter la présence ou l'absence du verre 32. Dans la douille représentée sur la figure, le poussoir 70 est logé dans un évidemment 115 du support isolant 11 et est apte à coulisser parallèlement à l'axe longitudinal de la douille. Le ressort 71 pousse le poussoir 70 vers l'extérieur, respectivement en direction du verre 32 de manière à ce qu'une première extrémité 72 du poussoir puisse entrer en contact avec le verre 32. L'autre extrémité du poussoir 70 est munie d'un moyen de contact 73 apte à établir une liaison électrique avec un deuxième moyen de contact 74.The safety device 7 here consists of at least one lever or pusher 70, suitable under the effect of an elastic means, for example a spring 71, to come detect the presence or absence of the glass 32. In the socket shown in the figure, the pusher 70 is housed in a recess 115 of the insulating support 11 and is able to slide parallel to the longitudinal axis of the socket. The spring 71 pushes the push button 70 outwards, respectively in the direction of glass 32 of so that a first end 72 of the pusher can enter in contact with the glass 32. The other end of the pusher 70 is provided a contact means 73 capable of establishing an electrical connection with a second means of contact 74.

    On voit sur la figure que l'extrémité 72 du poussoir 70 dessiné sur la partie de gauche ne détecte pas la présence d'un verre 32, faisant que le poussoir est repoussé complètement vers l'extérieur sous l'effet du ressort 71 interrompant la liaison électrique entre les moyens de contact 73 et 74, alors que l'extrémité 72 du poussoir dessiné sur la partie de droite détecte la présence d'un verre 32, faisant que le poussoir est repoussé vers l'intérieur établissant la liaison électrique entre les moyens de contact 73 et 74.We see in the figure that the end 72 of the pusher 70 drawn on the left side does not detect the presence of a glass 32, making that the pusher is pushed completely outward under the effect of the spring 71 interrupting the electrical connection between the means of contact 73 and 74, while the end 72 of the pusher drawn on the right side detects the presence of a glass 32, causing the push button is pushed inward establishing the electrical connection between the contact means 73 and 74.

    Vu que lorsqu'un verre 32 est brisé, des fragments de verre sont susceptibles de rester attachés au culot 30, il peut être avantageux de disposer plusieurs dispositifs de sécurité 7 aptes à détecter la présence du verre 32 sur la périphérie de la douille, de manière à ce qu'en cas de verre brisé, au moins un poussoir 70 soit actionné pour couper le circuit d'alimentation électrique. Dans ce cas, il est avantageux que les moyens de contact 73 et 74 de chacun des poussoirs 70 soient montés en série, comme représenté sur la figure.Since when a glass 32 is broken, fragments of glass are likely to remain attached to the base 30, it may be advantageous to have several security devices 7 capable of detecting the presence of glass 32 on the periphery of the socket, so that that in case of broken glass, at least one pusher 70 is actuated to cut off the power supply circuit. In this case, it is advantageous that the contact means 73 and 74 of each of the pushers 70 are mounted in series, as shown in the figure.

    Comme précédemment des variantes d'exécution peuvent être envisagées, notamment le remplacement des poussoirs 70 par des leviers basculants ou autres dispositifs d'actionnement ayant un effet semblable.As before, variant embodiments can be considered, in particular the replacement of pushers 70 with tilting levers or other actuating devices having an effect similar.

    La figure 11 montre encore un autre dispositif de sécurité 8, pouvant être ajouté à la douille de la présente invention, indépendant du dispositif de sécurité 7, constitué d'un micro fusible 80 monté sur le circuit reliant la borne de phase 120 et le plot central de contact 12. Le micro fusible 80 peut être changé depuis l'extérieur de la douille.FIG. 11 shows yet another safety device 8, can be added to the socket of the present invention, independent of the safety device 7, consisting of a micro fuse 80 mounted on the circuit connecting the phase terminal 120 and the central contact pad 12. The micro fuse 80 can be changed from the outside of the socket.

    Une douille de sécurité selon l'une ou l'autre des formes d'exécution ou variantes décrites trouve de nombreuses applications. Par exemple elle peut être utilisée comme douille montée sur un luminaire destiné à une chambre d'enfants. Plusieurs douilles de sécurité peuvent aussi être montées en parallèle, ou en série dans le cas d'un courant d'alimentation continu, de manière à former une guirlande lumineuse, pour une décoration ou pour la protection d'un chantier par exemple. Dans ce cas, ces guirlandes étant assez souvent soumises à du vandalisme, une électrocution ultérieure peut ainsi être évitée.A safety socket in either form of execution or variants described finds numerous applications. For example it can be used as a socket mounted on a luminaire intended for a children's room. Several sockets safety can also be mounted in parallel, or in series in the case of a direct supply current, so as to form a light garland, for decoration or for the protection of a site for example. In this case, these garlands being quite often subject to vandalism, subsequent electrocution may be avoided.

    La figure 12 montre une douille de transition 9 comprenant un premier tube fileté conducteur 90, à l'intérieur duquel on a un corps isolant 91 et un deuxième tube fileté conducteur 92. Dans ce type de douille de transition, l'ampoule dont le diamètre de culot est adapté au diamètre du deuxième tube fileté 92 est vissée dans ce deuxième tube fileté alors que la douille de transition elle-même est vissée dans une autre douille adaptée au diamètre du premier tube fileté 90. Dans les douilles de transition connues, les deux tubes filetés 90 et 92 sont directement reliés électriquement et le plot central de contact 12 est directement relié électriquement au contact de fond de culot 93. Une telle douille de transition permet de disposer une ampoule ayant un culot correspondant au diamètre du deuxième tube fileté 92 dans une douille ayant un diamètre correspondant à celui du premier tube fileté 90.Figure 12 shows a transition socket 9 comprising a first conductive threaded tube 90, inside which there is a body insulator 91 and a second conductive threaded tube 92. In this type of transition socket, the bulb whose base diameter is suitable to the diameter of the second threaded tube 92 is screwed into this second threaded tube while the transition sleeve itself is screwed into another socket adapted to the diameter of the first threaded tube 90. In the known transition sockets, the two threaded tubes 90 and 92 are directly electrically connected and the central contact pad 12 is directly electrically connected to the base socket contact 93. A such a transition socket makes it possible to have a bulb having a base corresponding to the diameter of the second threaded tube 92 in a socket having a diameter corresponding to that of the first threaded tube 90.

    Sur la douille de transition de sécurité 9 de la figure 12 on a disposé, à titre d'exemple, un dispositif de sécurité 2 correspondant à la première forme d'exécution décrite précédemment, soit un disque 20 muni de sa pastille de contact 200 ainsi que de la piste conductrice 201 et fonctionnant exactement comme décrit plus haut. Dans ce cas, la borne de contact de phase 120 est remplacée par le contact de fond de culot 93, alors que la borne de contact de neutre 100 est remplacée par le premier tube fileté conducteur 90.On the safety transition sleeve 9 of FIG. 12 we have arranged, for example, a safety device 2 corresponding to the first embodiment described above, i.e. a disc 20 provided with its contact pad 200 as well as the conductive track 201 and operating exactly as described above. In this case phase contact terminal 120 is replaced by the bottom contact of base 93, while the neutral contact terminal 100 is replaced by the first conductive threaded tube 90.

    La douille de transition 9 de la figure 13 est différente de celle qui vient juste d'être décrite dans la mesure où le diamètre du premier tube fileté 90 correspond à celui du deuxième tube fileté 92. Une telle douille de transition n'aurait aucune utilité en elle-même, à moins d'être munie d'un dispositif de sécurité selon l'une ou l'autre des formes d'exécution ou variantes décrites précédemment. Une telle douille de transition permet donc de transformer une douille normale en douille de sécurité. Dans le cas de la figure 12, et à titre d'exemple, le dispositif de sécurité est semblable à celui décrit en regard des figures 4 et 5, si ce n'est que la borne de contact de phase 120 est remplacée par le contact de fond de culot 93, alors que la borne de contact de neutre 100 est remplacée par le premier tube fileté conducteur 90.The transition sleeve 9 in FIG. 13 is different from the one just described since the diameter of the first threaded tube 90 corresponds to that of the second threaded tube 92. Such a transition socket would have no use in itself, except unless it has a safety device according to one or other of the embodiments or variants described above. Such a transition socket therefore allows to transform a normal socket in safety socket. In the case of FIG. 12, and by way of example, the safety device is similar to that described with regard to Figures 4 and 5, except that the phase contact terminal 120 is replaced by the bottom socket contact 93, while the terminal neutral contact 100 is replaced by the first threaded tube driver 90.

    On doit comprendre ici qu'une douille de transition 9, de n'importe quel type, soit avec ou sans variation de diamètre, peut être équipée d'un ou plusieurs dispositifs de sécurité tels que décrit précédemment, selon l'une ou l'autre des formes d'exécution ou variantes mentionnées pour une douille de sécurité.It should be understood here that a transition socket 9, of any type, either with or without variation in diameter, can be equipped with one or more safety devices as described previously, according to one or other of the embodiments or variants mentioned for a safety socket.

    De préférence une douille de transition 9, de n'importe quel type, sera munie d'un moyen de blocage de technique connue, schématisé en 900 sur les figures 12 et 13, permettant lorsque douille de transition est montée dans une autre douille, de rendre cet assemblage indémontable ou plus difficilement démontable.Preferably a transition socket 9, of any type, will be provided with a blocking means of known technique, shown diagrammatically at 900 in FIGS. 12 and 13, allowing when socket transition is mounted in another socket, to make this non-removable assembly or more difficult to dismantle.

    L'homme du métier saura adapter l'enseignement apporté ici concernant les douilles de transition munies de culots à vis, à des douilles de transition munies de culots à baïonnette. L'adaptation de cet enseignement à des douilles de transition permettant de passer d'une douille à vis à un culot de lampe à baïonnette ou vice-versa est aussi évidente.Those skilled in the art will be able to adapt the teaching provided here for transition sockets fitted with screw caps, at transition sockets fitted with bayonet caps. The adaptation of this teaching to transition sockets allowing to pass from a screw socket to a bayonet fitting or vice versa is as obvious.

    Les douilles de sécurité ou de transition décrites ici s'appliquent particulièrement bien à des installations fonctionnant à tension usuelle normalisée, par exemple à 220V, mais elles pourraient aussi être utilisées pour des installations fonctionnant à tension plus élevée ou moins élevée, ainsi qu'à toutes les fréquences usuelles.The safety or transition sockets described here apply particularly well to installations operating at normalized normalized voltage, for example at 220V, but they could also be used for installations operating at higher voltage high or lower, as well as all the usual frequencies.

    Claims (20)

    1. A socket (1; 9) for an electric light bulb including a first electric supply circuit, in particular a phase voltage supply, comprising at least a first contact block (12) provided at the bottom of the socket and a first contact piece (120; 93), as well as a second electric supply circuit, in particular a neutral supply, comprising at least a fixing tube comprising at least one conductive portion (10; 92) fitted into an insulating support (11; 91) and a second contact piece (100; 90), said socket further comprising a safety device (2) able to detect the presence or the absence of a light bulb (3) in said socket, comprising a disc (20) made of an insulating material and provided with a plurality of radial extensions (21), said disc being fitted into said socket so that the plan of said disc is essentially perpendicular to the longitudinal axis of the socket (1), said disc being able to slide along the direction of said longitudinal axis of the socket, being pushed by an elastic means (22) to move away from the bottom of the socket, said radial extensions (21) being adapted to slide into recesses (110) provided within the socket in order to guide said disc, an abutment (111) being provided in at least one recess (110) in order to restrict the sliding of the disc (20) towards the exterior of the socket, said disc further comprising at least one conductive capsule (200) traversing the disc and able to establish an electric contact between the first contact block (12) and a cap bottom contact (31) of the light bulb when the disc (20) is pushed against the bottom of the socket by said light bulb fitted into the socket,
         characterized in that
      said disc (20) further comprises a conductive pathway (201) insulated from the conductive capsule (200) and provided on the face of said disc facing the bottom of the socket, said bottom of the socket further comprising two additional contact blocks (13, 14) each provided opposite a portion of said conductive pathway, a first of said additional contact blocks (13) being electrically connected to the conductive portion (10; 92) of the support tube.
    2. The socket according to claim 1, characterized in that the first contact block (12) is electrically connected to the first contact piece (120; 93).
    3. The socket according to claim 1, characterized in that it further includes an additional safety device (4) comprising an insulated actuating device (40) having a first extremity protruding in the interior of the socket and a second extremity provided within a recess (113) of the insulating support and provided with a first contact capsule (400), a second contact capsule (401) being disposed in said recess (113) opposite said first contact capsule (400), elastic means (42) being provided to separate said contact capsules from each other; the fitting of a cap (30) of a light bulb (3) into said socket actuating said insulated actuating device, thus putting into contact the two said contact capsules (400, 401), a first of said capsules (400) being electrically connected to the first contact block (12) whereas the second of said capsules (401) is electrically connected to the first contact piece (120; 93).
    4. The socket according to anyone of claim 1 or 3, characterized in that the second of said additional contact blocks (14) is electrically connected to the second contact piece (100; 90).
    5. The socket according to anyone of claim 1 or 3, characterized in that it further includes an additional safety device (4) comprising an insulated actuating device (40) having a first extremity protruding in the interior of the socket and a second extremity provided within a recess (113) of the insulating support and provided with a first contact capsule (400), a second contact capsule (401) being disposed in the said recess (113) opposite said first contact capsule (400), elastic means (42) being provided to separate said contact capsules from each other, the fitting of a cap (30) of a light bulb (3) into said socket actuating said insulated actuating device, thus putting into contact the two said contact capsules (400, 401), a first of said capsules (400) being electrically connected to the second one of said additional contact blocks (14) whereas the second of said capsules (401) is electrically connected to the first contact piece (100; 90).
    6. The socket according to anyone of the preceding claims, characterized in that it further includes at least one locking device (5; 6) able to lock said disc (20) in a position remote from the bottom of the socket.
    7. The socket according to claim 6, characterized in that the releasing of the locking device (5) is manually controlled.
    8. The socket according to claim 7, characterized in that said locking device comprises a lever (50) swivellingly mounted on a pivot (51) essentially perpendicular to the longitudinal axis of the socket, said lever including an inclined plane (520) cooperating with an edge of a portion of the radial extension (21) associated to the locking device to make the lever swivel during the moving of the disc (20) under the action of the elastic means (22) as well as a flat part (521) acting as an abutment against a portion of said radial extension (21) in order to lock the disc in a position remote from the bottom of the socket, said lever being further movable according to a direction essentially radial relative to the longitudinal axis of the socket under the action of an actuating means (510) disposed at the exterior of the socket, able to cause the lever to slide along the radial extension until it faces an indentation (210) or an extremity of said radial extension, thus releasing the disc.
    9. The socket according to claim 6, characterized in that the releasing of the locking device (6) is automatically controlled during the fitting of a light bulb into the socket.
    10. The socket according to claim 9, characterized in that said locking device comprises at least a lever (61) movable according to a direction essentially radial relative to the longitudinal axis of the socket under the action of an actuating means (60) arranged inside the socket, able to cause the lever to slide along the radial extension until it faces an indentation (210) or an extremity of said radial extension (210), thus releasing the disc.
    11. The socket according to anyone of the preceding claims, characterized in that it further includes a safety device (7) able to detect a presence or the absence of the glass (32) of a light bulb (3) on said socket and to cut-off at least the electric circuit connecting the first contact piece (120; 93) and the first contact block (12) when it has detected the absence of said light bulb glass.
    12. The socket according to claim 11, characterized in that said safety device includes at least a pushbutton (70) able to slide parallel to the longitudinal axis of the socket into a recess (115) of the insulating support (11), an elastic means able to push a first extremity (72) of said pushbutton outside of said socket to detect the presence or the absence of said glass (32), the other extremity of said pushbutton being provided with a first contact means (73) cooperating with a fixed second contact means (74), said contact means closing the supply circuit of the first contact block (12) from said first contact piece (120; 93) when said first extremity (72) of the pushbutton (70) has detected the presence of a glass (32) on the socket and opening said supply circuit when said first extremity (72) of the pushbutton (70) has detected the absence of a glass (32) on the socket.
    13. The socket according to claim 12, characterized in that it comprises a plurality of said pushbuttons (70) distributed on the outer periphery of the socket, said contact means (73, 74) of each of said pushbuttons being mounted in series with said first contact piece (120; 93) and said first contact block (12).
    14. The socket according to anyone of the preceding claims, characterized in that it further comprises a housing for a micro-fuse (80) provided in the supply circuit of the first contact block (12).
    15. The socket according to anyone of the preceding claims, characterized in that the first contact piece corresponds to a contact terminal (120) able to receive a first electric supply wire and in that the second contact piece corresponds to a contact terminal (100) able to receive a second electric supply wire.
    16. The socket according to anyone of claims 1 to 14, characterized in that it is provided as a transition socket comprising in particular an external conductive tube (90) and an external cap bottom contact (93) as well as an internal conductive tube (92) and at least a first contact block (12), the first contact piece corresponding to said cap bottom contact (93) while the second contact piece corresponds to said external conductive tube (90).
    17. The socket according to claim 16, characterized in that at least one of the external or internal conductive tubes (90, 92) is a threaded conductive tube.
    18. The socket according to anyone of claim 16 or 17, characterized in that at least one of the external or internal conductive tubes (90, 92) corresponds to a bayonet cap.
    19. The socket according to anyone of claims 16 to 17, characterized in that it further comprises a locking means (900) able to lock the transition socket mounted on another socket.
    20. Light means provided with at least a safety socket according to anyone of the preceding claims.
    EP00910485A 1999-05-03 2000-03-29 Safety socket Expired - Lifetime EP1173906B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    EP00910485A EP1173906B1 (en) 1999-05-03 2000-03-29 Safety socket

    Applications Claiming Priority (6)

    Application Number Priority Date Filing Date Title
    EP99810372A EP1050936A1 (en) 1999-05-03 1999-05-03 Safety bulb holder
    EP99810372 1999-05-03
    CH138099 1999-07-27
    CH138099 1999-07-27
    PCT/CH2000/000183 WO2000067349A1 (en) 1999-05-03 2000-03-29 Safety socket
    EP00910485A EP1173906B1 (en) 1999-05-03 2000-03-29 Safety socket

    Publications (2)

    Publication Number Publication Date
    EP1173906A1 EP1173906A1 (en) 2002-01-23
    EP1173906B1 true EP1173906B1 (en) 2004-10-20

    Family

    ID=25687498

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00910485A Expired - Lifetime EP1173906B1 (en) 1999-05-03 2000-03-29 Safety socket

    Country Status (7)

    Country Link
    US (1) US6491534B1 (en)
    EP (1) EP1173906B1 (en)
    AT (1) ATE280444T1 (en)
    AU (1) AU3270100A (en)
    CA (1) CA2373092C (en)
    DE (1) DE60015113D1 (en)
    WO (1) WO2000067349A1 (en)

    Families Citing this family (12)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6652305B1 (en) * 2002-12-30 2003-11-25 Difusco Frank Socket to accommodate standard screw based light bulb
    US7244148B2 (en) * 2004-07-23 2007-07-17 Ford Global Technologies Llc Circuit disconnect assembly
    DK200501590A (en) * 2005-11-15 2006-04-03 Poulsen Carsten Hornshoej Touch-safe socket
    US7413456B1 (en) 2006-11-14 2008-08-19 Difusco Frank Quick connect light bulb socket
    US7618288B1 (en) 2007-03-01 2009-11-17 Difusco Frank Quick connect spring-clamp light bulb socket
    CN101938078B (en) * 2010-07-15 2014-07-09 常州市福兴电器有限公司 Safe lamp holder
    US8419458B2 (en) * 2010-04-06 2013-04-16 Baker Hughes Incorporated Tubular connection system facilitating nonrotating signal conductor connection and method
    US8167637B1 (en) * 2011-02-11 2012-05-01 Joti Projkovski Shock free bulb insert
    US8668504B2 (en) 2011-07-05 2014-03-11 Dave Smith Chevrolet Oldsmobile Pontiac Cadillac, Inc. Threadless light bulb socket
    US9130289B2 (en) * 2012-08-02 2015-09-08 Google Inc. Power connector
    US9281622B2 (en) * 2012-12-07 2016-03-08 Commscope, Inc. Of North Carolina Communications jacks having low-coupling contacts
    US9478929B2 (en) * 2014-06-23 2016-10-25 Ken Smith Light bulb receptacles and light bulb sockets

    Family Cites Families (9)

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    Publication number Priority date Publication date Assignee Title
    US656284A (en) * 1899-09-02 1900-08-21 Siemens & Halske Elec Co Usa System of non-interchangeable contact parts.
    SE337063B (en) * 1970-03-11 1971-07-26 E Stroem
    CH648699A5 (en) * 1979-10-10 1985-03-29 Neuenschwander & Co Ag BULB SOCKET WITH TOUCH-PROOF VOLTAGE.
    EP0030128A1 (en) * 1979-11-30 1981-06-10 Park Royal Porcelain Company Limited Electrical sockets
    US4456322A (en) * 1981-04-28 1984-06-26 Ferroni Frank A L Lamp wattage limiting device
    AU4405085A (en) * 1984-05-25 1985-12-31 Kudos Lighting Ltd. Lampholder
    US5573419A (en) * 1994-12-22 1996-11-12 Chen; Ming-Hsiung Safety lampholder for Christmas tree light sets and the like
    IT1280177B1 (en) * 1995-05-26 1998-01-05 Gabriele Centazzo ANTI-ACCIDENT LAMPHOLDER
    US6322380B1 (en) * 2000-08-14 2001-11-27 Martin E. Conroy Safety light socket

    Also Published As

    Publication number Publication date
    DE60015113D1 (en) 2004-11-25
    WO2000067349A1 (en) 2000-11-09
    AU3270100A (en) 2000-11-17
    US6491534B1 (en) 2002-12-10
    EP1173906A1 (en) 2002-01-23
    CA2373092A1 (en) 2000-11-09
    CA2373092C (en) 2004-05-25
    ATE280444T1 (en) 2004-11-15

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