EP1050936A1 - Sicherheitsfassung - Google Patents

Sicherheitsfassung Download PDF

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Publication number
EP1050936A1
EP1050936A1 EP99810372A EP99810372A EP1050936A1 EP 1050936 A1 EP1050936 A1 EP 1050936A1 EP 99810372 A EP99810372 A EP 99810372A EP 99810372 A EP99810372 A EP 99810372A EP 1050936 A1 EP1050936 A1 EP 1050936A1
Authority
EP
European Patent Office
Prior art keywords
socket
contact
disc
socket according
lever
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.)
Withdrawn
Application number
EP99810372A
Other languages
English (en)
French (fr)
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
Application filed by Dolsimer Investment SA filed Critical Dolsimer Investment SA
Priority to EP99810372A priority Critical patent/EP1050936A1/de
Priority to AU32701/00A priority patent/AU3270100A/en
Priority to DE60015113T priority patent/DE60015113D1/de
Priority to CA002373092A priority patent/CA2373092C/fr
Priority to US09/980,558 priority patent/US6491534B1/en
Priority to AT00910485T priority patent/ATE280444T1/de
Priority to PCT/CH2000/000183 priority patent/WO2000067349A1/fr
Priority to EP00910485A priority patent/EP1173906B1/de
Publication of EP1050936A1 publication Critical patent/EP1050936A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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 a electric bulb with screw base or bayonet.
  • an accident by electrocution can occur when a bulb is broken in a socket and only a portion of the electrical circuit of the bulb remains energized and is no longer protected by the glass the bulb. In this case also a contact by a finger or a tool can be dangerous.
  • a first object of the invention is to propose a socket for safety for a light bulb fitted with a safety device to prevent accidental contact with the central stud of the socket.
  • a second object of the invention is to propose that the socket previous security is provided with a security device allowing prevent accidental contact with any conductive part accessible from the socket.
  • the socket 1 of FIG. 1 for screw base bulb, includes a threaded metal tube 10, inserted into an insulating support 11 as well as a central contact pad 12.
  • a first contact terminal 100 connected to tube 10 receives the neutral conductor of the socket power cable (not shown), while a second contact terminal 120 receives the phase conductor for supply the central contact pad 12.
  • the contact terminal 120 is directly connected to the central contact pad 12.
  • the safety socket of Figure 1 includes a device for safety contact 2, according to a first embodiment of the invention, inserted between the contact terminal 120 and the central contact pad 12.
  • the safety contact device 2 comprises a pusher 20, made of material insulator, able to slide in a hole 110 arranged radially in the sleeve 1 relative to the longitudinal axis of said sleeve, in the tube threaded 10 and the insulating support portion 11 which is directly attached thereto.
  • a first end 200 of the pusher 20 projects inside the tube threaded 10 while the other end 201 of the same pusher projects in an obviously 111 arranged in a portion of the insulating support 11.
  • the end 201 is provided with a contact pad 202 connected electrically, in the variant considered here, to the central contact pad 12.
  • the pusher 20 By inserting a bulb 3 into the socket 1, as shown see in Figure 2, respectively by screwing the base 30 into the threaded tube 10, the pusher 20 is pushed radially outward into the hole radial 110 by the base 30 pressing said first end 200 of which the shape is adapted to this use. At this time the spring means 204 are compressed and the two contact pads 202 and 203 come into contact, thus closing the electrical circuit.
  • the safety device 2 As shown in the variant of Figure 1, the safety device 2 is interposed between the terminal contact 120 of the phase conductor and the central contact pad 12, whereas in the variant of FIG. 2, the safety device 2 is interposed between the contact terminal 100 of the neutral conductor and the tube threaded 10.
  • a safety socket 1 will be provided with a safety device 2, arranged as in FIG. 1, between terminal 120 of the phase conductor and the central contact pad 12.
  • a safety device 2 arranged as in FIG. 1, between terminal 120 of the phase conductor and the central contact pad 12.
  • the socket security will preferably be provided with a second security device 2, arranged as shown in Figure 2, between terminal 100 and the threaded tube 10.
  • a safety socket when a safety socket is provided with a first safety device 2 arranged between phase terminal 120 and the stud central 12 as well as a second security device 2 disposed between the neutral terminal 100 and the threaded tube 10, said socket is completely galvanically isolated when no bulb is attached.
  • the spring means 204 can be arranged differently from what is shown in the figure or the same effect of connection and disconnection of two contact pads can be obtained by a rocking lever, one end of which projects into the threaded tube.
  • Such a safety device can also be adapted for a socket intended for receive a bayonet base bulb.
  • a first type generally used for an AC voltage, in which there is a stud contact center, similar to stud 12 described above, and a smooth contact electrically having the same function as the threaded tube 10 described above
  • a second type generally used for a direct voltage, comprising two contact pads arranged side by side at socket bottom.
  • the operation of the safety device will be similar to what was described above, and that's when the pellet is introduced into the contact tube as the pusher projecting into said contact tip is pushed outward, thereby establishing power the element to which it is connected.
  • a socket of the first type central stud and contact tube
  • a cutting safety device the electrical supply of the contact pad or else, in addition to this first safety device, a second device cutting the power to the contact tube.
  • sockets of the second type two studs of contact side by side
  • FIGS 3 and 4 show a screw socket 1 provided with a safety device 4 according to a second embodiment.
  • the central contact pad 12 is directly connected to the terminal 120.
  • the safety device 4 consists of a disc 40 consisting essentially of an insulating material and provided with several extensions radial 41, also insulating, each of said extensions 41 being housed in a recess 112 of the insulating support 11 and / or of the threaded tube 10.
  • a spring means 42 is disposed between the bottom of the socket 1 and the disc 40, acting so as to move disc 40 away from the bottom of the socket, respectively of the central contact pad 12. Shoulders 113 limit the recesses 112 towards the outside of the sleeve, preventing the disc 40 coming out of the socket.
  • the insulating disc 40 includes a patch contact 400, arranged in the center of the disc 40 and passing through the disc along the direction of the longitudinal axis of the sleeve.
  • this second embodiment also includes a variant, visible on the Figure 5, according to which the socket is completely galvanically isolated.
  • the disc 40 comprises, in addition to the pellet of contact 400 crossing the disc as before, a crown of contact 401 on its underside, arranged coaxially with the pad 400 and isolated relative to the latter, while the bottom of the socket comprises, in addition to the central stud 12, connected to the terminal 120, two studs 13 and 14 arranged on either side of the central stud 12, facing portions of the crown 401.
  • the stud 14 is connected to the neutral terminal 100, while the stud 13 is connected to the threaded tube 10.
  • phase contact is established between the central stud 120 and the base bottom contact 31 by through the central pad 400, while the neutral contact goes through terminal 100, pad 14, crown 401, pad 13 and the tube threaded 10.
  • the disc 40 has been shown with four radial extensions 41, but it is obvious that he could understand a different number.
  • the disc 40 will be provided with at least two radial extensions 41.
  • the spring means 42 may be arranged differently from what is shown here.
  • the element described as crown 401 can consist only of a conductive portion on the underside of the disc 40, this conductive portion connecting, when the disc 40 is pushed to the bottom of the socket, the two studs 13 and 14 arranged in any places on the bottom of the socket.
  • this second embodiment can be adapted to the sockets bayonet of either of the types described.
  • the sockets of first type central stud and contact tube
  • construction and operation of the safety device are similar to what has been described above.
  • the disc 40 will have two through contact pads, each being able to put one of the pads in contact with the contact of corresponding base of the lamp base.
  • a device complementary locking of the disc 40 in a position remote from the stud central 12 may be appropriate so as to avoid that the disc 40 can be moved by pressing 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 4 and in elevation on the Figure 6.
  • the locking device 5 consists here of a lever 50 mounted on a pivot 51 able to pivot around an axis 511 perpendicular to the axis longitudinal of the sleeve as well as sliding along said axis 511.
  • the lever 50 includes a shoulder 52 comprising an inclined plane 520 and a flat 521 as well as a push button 510 protruding out of the external wall of the socket 1.
  • the device is completed by a first means spring 53, shown here by a leaf spring, suitable for holding the lever 50 in the locked position, i.e.
  • the lever 50 is able to pivot by a determined angle around axis 511 and slide of a determined value, in a housing 114 fitted for this purpose in the insulating support 11.
  • the radial extension 41 la closer to the locking device 5 comprises a notch 410, turned towards the side of the locking device and slightly wider greater than the thickness of the lever 50.
  • the disc 40 When a bulb is placed in the socket and it is removed by unscrewing it, the disc 40 accompanies the movement of removal of the bulb base, being pressed by the spring 42 seen in FIG. 3. During this movement, the radial extension 41 meets the inclined plane 520 and rotates the lever 50 in the direction indicated by the arrows in FIG. 6. When the radial extensions 41 of the disc 40 come into abutment against the shoulders 113, the lever 50 returns to the rest position under the action of the leaf spring 53, the flat 521 then preventing a new displacement from disc 40 towards the bottom of the socket, retaining the extreme portion of the radial extension 41, as seen in plan on the lower portion of Figure 4. The disc 40 is thus locked in position such that a contact with the central stud is impossible.
  • the disc 40 In order to allow the installation of a new bulb in the socket, it is necessary to unlock the disc 40. For this, it is enough to press the push button 510, which pushes the lever 50 towards the notch 410, as seen on the portion upper of Figure 4. Thus the disc 40 is unlocked and can lower towards the bottom of the socket during the insertion of the bulb in order to to allow the central pad 12 to come into contact with the bottom contact bulb base, studs 13 and 14 respectively with the crown 401.
  • the locking device 6 operates fairly similar to the one just described above, the difference being that unlocking takes place automatically when a bulb in the socket.
  • the device 6 is provided with a pusher 60, similar to the pusher 20 described above with reference to FIG. 1, the end of the pusher 60 disposed in the recess 111 carrying a lever 61 provided like the lever 50 seen above with a stop flat. In this case, the movement of the lever 61 to unlock the disc 40 is done radially outward.
  • the base comes push the pusher 60 outwards, in opposition to the spring 62, as described above with reference to FIGS. 1 and 2.
  • the lever 61 is thus displaced so as to release the extension 41 retained by the flat, respectively allow the disc 40 to move towards the bottom of the sleeve.
  • the disc 40 is pushed by the spring 42 until the extensions 41 come into abutment against shoulders 113, removal complete with the bulb releasing the pusher 60, which under the effect of the means to spring 62 blocks the extension 41 under the flat portion of the lever 61.
  • the locking means 6 are actuated automatically when a bulb is inserted or removed and does not therefore require no manipulation for their actuation.
  • edges of the elements of the device for operational contact locking e.g. extension edge radial 41 in contact with the lever 50 or 61 according to one or the other of the described versions, are formed, for example bevelled or rounded, of so as to facilitate the sliding of these elements between them.
  • the upper portions of guide recesses 112 may each include an obviously additional, disposed on a portion of the periphery of the sleeve, perpendicular to the corresponding guide recess, the disc 40 further comprising a control lever, for example a radial extension of an extension 41, accessible from outside the socket, said lever allowing, when the disc is in the stop position in the upper portion of the guide recesses, to rotate it a portion of a tower so as to engage the extensions in the additional recesses, so as to lock the disc, a pivoting in the opposite direction to unlock it.
  • Said lever can be operated manually or using a tool.
  • pusher 60 of FIGS. 7 and 8 one could have a lever pivoting, controlling the lever 61, and one end of which would protrude into the threaded conductive tube 10.
  • FIG. 9 shows another safety device 7 intended for 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 tube threaded 10 as described so far, the device 7 detects the presence or the absence of the glass 32 of the bulb 3.
  • This safety device is particularly useful in order to prevent a portion of the bulb 3 from remaining under tension 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 a spring means 71 to detect the presence or absence of glass 32.
  • the pusher 70 is housed in a recess 115 of the support insulator 11 and is able to slide parallel to the longitudinal axis of the socket.
  • a spring 71 pushes the pusher 70 outwards, respectively towards the glass 32 so that a first end 72 of the pusher can come into contact with the glass 32.
  • the other end of the pusher 70 is provided with a contact means 73 capable of establishing a connection electric with a second contact means 74.
  • FIG. 9 shows yet another safety device 8, independent of the previous one, 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 outside the socket.
  • Safety device 7 for detecting the glass 32 can be used alone or in combination with any of the security described above.
  • Safety device 8 by micro fuse 80 is generally used in combination with either safety devices described above.
  • a safety socket in either form of execution or variants described finds numerous applications. Through example it can be used as a socket mounted on a luminaire intended for a children's room. Several safety sockets can also be mounted in parallel so as to form a garland luminous, for decoration or for the protection of a site by example. In this case, these garlands are quite often subjected to vandalism, theft or broken bulbs, subsequent electrocution may be avoided.
  • the safety sockets described here are particularly applicable well to installations operating at usual voltage, for example at 220V, but they could also be used for functioning installations at higher or lower voltage, as well as at all frequencies usual.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP99810372A 1999-05-03 1999-05-03 Sicherheitsfassung Withdrawn EP1050936A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP99810372A EP1050936A1 (de) 1999-05-03 1999-05-03 Sicherheitsfassung
AU32701/00A AU3270100A (en) 1999-05-03 2000-03-29 Safety socket
DE60015113T DE60015113D1 (de) 1999-05-03 2000-03-29 Sicherheitsfassung
CA002373092A CA2373092C (fr) 1999-05-03 2000-03-29 Douille de securite
US09/980,558 US6491534B1 (en) 1999-05-03 2000-03-29 Safety socket
AT00910485T ATE280444T1 (de) 1999-05-03 2000-03-29 Sicherheitsfassung
PCT/CH2000/000183 WO2000067349A1 (fr) 1999-05-03 2000-03-29 Douille de securite
EP00910485A EP1173906B1 (de) 1999-05-03 2000-03-29 Sicherheitsfassung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99810372A EP1050936A1 (de) 1999-05-03 1999-05-03 Sicherheitsfassung

Publications (1)

Publication Number Publication Date
EP1050936A1 true EP1050936A1 (de) 2000-11-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810372A Withdrawn EP1050936A1 (de) 1999-05-03 1999-05-03 Sicherheitsfassung

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EP (1) EP1050936A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007098758A1 (en) * 2006-01-20 2007-09-07 Poulsen Carsten Hornshoej A touch-safe socket

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7103222A (de) * 1970-03-11 1971-09-14
EP0027244A1 (de) * 1979-10-10 1981-04-22 Neuenschwander + Co. AG Glühlampenfassung mit berührungssicherer Spannungszuführung
EP0030128A1 (de) * 1979-11-30 1981-06-10 Park Royal Porcelain Company Limited Elektrische Lampenfassung
EP0744792A2 (de) * 1995-05-26 1996-11-27 Gabriele Centazzo Unfallsichere Lampenfassung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7103222A (de) * 1970-03-11 1971-09-14
EP0027244A1 (de) * 1979-10-10 1981-04-22 Neuenschwander + Co. AG Glühlampenfassung mit berührungssicherer Spannungszuführung
EP0030128A1 (de) * 1979-11-30 1981-06-10 Park Royal Porcelain Company Limited Elektrische Lampenfassung
EP0744792A2 (de) * 1995-05-26 1996-11-27 Gabriele Centazzo Unfallsichere Lampenfassung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007098758A1 (en) * 2006-01-20 2007-09-07 Poulsen Carsten Hornshoej A touch-safe socket

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