EP0011008A1 - Lampenschraubsockel mit einer Vorrichtung zur Verhinderung des Lösens der Lampe - Google Patents
Lampenschraubsockel mit einer Vorrichtung zur Verhinderung des Lösens der Lampe Download PDFInfo
- Publication number
- EP0011008A1 EP0011008A1 EP79400726A EP79400726A EP0011008A1 EP 0011008 A1 EP0011008 A1 EP 0011008A1 EP 79400726 A EP79400726 A EP 79400726A EP 79400726 A EP79400726 A EP 79400726A EP 0011008 A1 EP0011008 A1 EP 0011008A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- threaded ring
- brake member
- base
- insulating body
- lamp
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- 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
- H01R33/97—Holders with separate means to prevent loosening of the coupling or unauthorised removal of apparatus held
- H01R33/971—Holders with separate means to prevent loosening of the coupling or unauthorised removal of apparatus held for screw type coupling devices
Definitions
- the present invention relates generally to screw sockets, and is aimed more particularly but not exclusively at those sockets which, said to be safety sockets, include, in an insulating body, most often made of so-called electrotechnical quality porcelain, a ring threaded, which is suitable for screw-on engagement of the base of a lamp, and which is intended to remain de-energized, its only function being a mechanical retaining function, an axial contact at the bottom of the base, with which the axial stud of such a lamp is intended to come into contact, and a lateral contact of the base, with which the base of this lamp is intended jointly to come into contact.
- the threaded retaining ring may locally have a deformation forming a brake, or, as described in particular in French patent No. 1,347,848, its thread be formed by elastic tongues each forming such a brake.
- the insulating body must in practice be modified with respect to a conventional comparable insulating body, to allow the establishment of such a strip and ensure its maintenance in position.
- the present invention generally relates to a screw socket which, although provided with a brake member, is free from such drawbacks, taking advantage of the fact that, to date, almost generally, the ring threaded comprises radially a collar by which it bears on a shoulder of the insulating body.
- This screw socket which is generally of the kind, not necessarily limited to safety sockets, comprising, in an insulating body, a threaded ring, which is suitable for the screw connection of the base of a lamp, and which has a cutout with the aid of which a brake member protrudes inside said ring and is thus suitable for bearing on such a base, said brake member comprising an elastically deformable strip extending both axially and circumferentially screws -with respect to the threaded ring with which it is associated, the threaded ring comprising radially a collar by which it bears on a shoulder of the insulating body, is characterized in that the strip forming the brake member is integral with a support flange inserted between said flange of the threaded ring and said shoulder of the insulating body.
- This socket comprises an insulating body 10, in practice made of porcelain, generally formed by a base 11 and a skirt 12.
- the base 11 externally carries two connection terminals 13.
- the skirt 12 has, beyond a transverse shoulder 14, a thread 15, of diameter D1 at its top, which extends only over part of its height, at a distance from the base 11.
- this retaining ring 17 On this thread 15 is engaged, by screwing, a threaded retaining ring 17, of internal diameter at the bottom of the thread D2; this retaining ring 17 in practice has a radial flange 18 by which it is normally able to bear on the shoulder 14 of the insulating body 10.
- its radial flange 18 is usually assigned locally to two deformations 19, practiced in diametrically opposite positions, in line with notches provided for this purpose on the shoulder 14 of the insulating body 10.
- the insulating body 10 Close to its base 11, the insulating body 10 also contains a lateral contact of base 20, which, in the example of embodiment shown, is in the form of an annular ring attached to the base 11 by a base 21 which is in electrical connection with one of the connection terminals 13 ..
- the insulating body 10 also contains an axial contact at the bottom of the base 23, which is in electrical connection with the other of the connection terminals 13.
- the threaded ring 17 has locally, in the vicinity of its radial flange 18, a cutout 25 with the aid of which a brake member 26 intervenes, this brake member projecting inside this threaded ring 17 and being thus suitable for wearing on the base 27 of a screw base lamp 28 when this lamp is engaged by screwing in the socket concerned.
- This brake member 26 is in practice constituted by an elastically deformable strip, which extends both axially, that is to say parallel to the axis of the ring 17, and circumferentially, that is to say circularly vis-à-vis this ring, on a circular segment whose development, limited, is linked to that of the cutout 25 of said ring.
- the brake member 26 is integral with a support flange 30 inserted between the radial flange 18 of the threaded ring 17 and the shoulder 14 of the insulating body 10.
- this radial flange 18 bears on this shoulder 14.
- the brake member 26 and its support flange 30 may advantageously be in one piece and come from one and the same metal blank, made of spring steel, suitably cut, folded, and shaped.
- the support flange 30 extends in practice circularly in a circular sector.
- this circular sector does not extend over 360 °, but, for good resistance of the support flange 30 with respect to the threaded ring 17, in particular during the mounting, its opening in the center is preferably at least equal to 180 °, and in practice, as shown in the figures, slightly greater than 180 °.
- the strip forming the brake member 26 according to the invention is attached to its support flange 30 by that of the circumferential edges thereof which is radially closest to the axis of the threaded ring 17, and therefore it crosses radially the cutout 25 of this ring.
- the lamella forming the brake member 26 according to the invention is, circumferentially, generally curved, in successive facets, being convex in the direction of the axis of the threaded ring 17.
- this strip makes, radially, with respect to the bottom of the thread of the threaded ring 17, a projection of radial development e l , FIG. 2.
- the radial projection el is such that the distance D 4 to the bottom of the diametrically opposite thread of the retaining ring 17 is less than the diameter D3 of the base 27 of the lamp 28.
- This strip being elastically deformable, it however elastically maintains its pressure against the base 27 of the lamp 28, and therefore opposes any untimely unscrewing of the latter under the effect of possible vibrations.
- the strip constituting the brake member 26 advantageously bears, by the axial edges of its lateral facets, on the thread 15 of the insulating body 10, the initial distance e 2 between these and this thread being absorbed.
- the brake effect of the lamella 26 is thereby improved, and jointly, the work in bending of its central facet is relieved.
- the lateral facets of the lamella 26 can be detached from the support flange 30 thereof, only the middle facet of this lamella therefore being in continuity with this support flange.
- the strip 26 constituting the brake member according to the invention may have projecting at least one protuberance with differentiated circumferential action, established so as to oppose the unscrewing of the lamp 28 while not opposing not to its screwing.
- its central facet 32 may have two or three punctures 35 oriented circumferentially in a direction chosen to correspond to the direction of screwing, as indicated by the arrow F in this FIG. 6.
- the facet 33 furthest downstream in the direction of screwing has a projecting elastically deformable tongue 36, chosen to correspond to the direction of screwing F.
- the strip 26 forming the brake member according to the invention is attached to its support flange 30 by that of the circumferential edges thereof which is radially furthest from the axis of the threaded ring 17, and, after a bend 38 in the form of a butt, by which it bypasses the radial flange 18 of this ring, it extends axially in the cutout 25 thereof.
- the insulating body 10 is of the ordinary type, and that the brake member 26 does not imply any particular adaptation or modification of this insulating body 10, nor does it increase in any way w 'radial bulk of the assembly.
- a safety socket that is to say a socket whose lateral contact of base is distinct from the threaded retaining ring, it this is not necessarily so, this threaded ring being able as well, for ordinary sockets, to serve by itself as lateral contact.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT79400726T ATE1439T1 (de) | 1978-10-27 | 1979-10-09 | Lampenschraubsockel mit einer vorrichtung zur verhinderung des loesens der lampe. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7830560A FR2440097A1 (fr) | 1978-10-27 | 1978-10-27 | Douille a vis |
FR7830560 | 1978-10-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0011008A1 true EP0011008A1 (de) | 1980-05-14 |
EP0011008B1 EP0011008B1 (de) | 1982-08-04 |
Family
ID=9214217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP79400726A Expired EP0011008B1 (de) | 1978-10-27 | 1979-10-09 | Lampenschraubsockel mit einer Vorrichtung zur Verhinderung des Lösens der Lampe |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0011008B1 (de) |
AT (1) | ATE1439T1 (de) |
DE (1) | DE2963505D1 (de) |
ES (1) | ES246454Y (de) |
FR (1) | FR2440097A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246029A (en) * | 1990-07-13 | 1992-01-15 | Electronic Components Ltd | Vibration-proof screw-ring electrical connector. |
US5683271A (en) * | 1994-04-25 | 1997-11-04 | Leviton Manufacturing Co., Inc. | Lampholder with means to reject incorrectly dimensioned lamps |
WO2001028047A2 (es) * | 1999-10-13 | 2001-04-19 | Tobias Pader Jesus Eduardo | Socket elastico para articulos electricos |
CN100395924C (zh) * | 2006-02-20 | 2008-06-18 | 林家鹳 | 灯头转换装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB206732A (en) * | 1922-12-11 | 1923-11-15 | Giuseppe Brambilla | Improvements in safety locking apparatus for incandescent electric lamp sockets for preventing snatch-stealing of the lamps |
US1936871A (en) * | 1932-09-10 | 1933-11-28 | William A Ervin | Antitheft light socket |
DE946375C (de) * | 1952-07-26 | 1956-08-02 | Vossloh Werke Gmbh | Gluehlampenfassung mit Sicherung gegen das Loesen der Lampen durch Erschuetterung |
FR1151075A (fr) * | 1956-05-30 | 1958-01-23 | Perfectionnements aux supports de connexion à vis | |
DE1044962B (de) * | 1955-08-29 | 1958-11-27 | Siemens Ag | Vorrichtung zur Verhinderung des Lockerwerdens von Gluehlampen, Sicherungen od. dgl. |
-
1978
- 1978-10-27 FR FR7830560A patent/FR2440097A1/fr active Granted
-
1979
- 1979-10-09 DE DE7979400726T patent/DE2963505D1/de not_active Expired
- 1979-10-09 AT AT79400726T patent/ATE1439T1/de not_active IP Right Cessation
- 1979-10-09 EP EP79400726A patent/EP0011008B1/de not_active Expired
- 1979-10-26 ES ES1979246454U patent/ES246454Y/es not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB206732A (en) * | 1922-12-11 | 1923-11-15 | Giuseppe Brambilla | Improvements in safety locking apparatus for incandescent electric lamp sockets for preventing snatch-stealing of the lamps |
US1936871A (en) * | 1932-09-10 | 1933-11-28 | William A Ervin | Antitheft light socket |
DE946375C (de) * | 1952-07-26 | 1956-08-02 | Vossloh Werke Gmbh | Gluehlampenfassung mit Sicherung gegen das Loesen der Lampen durch Erschuetterung |
DE1044962B (de) * | 1955-08-29 | 1958-11-27 | Siemens Ag | Vorrichtung zur Verhinderung des Lockerwerdens von Gluehlampen, Sicherungen od. dgl. |
FR1151075A (fr) * | 1956-05-30 | 1958-01-23 | Perfectionnements aux supports de connexion à vis |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246029A (en) * | 1990-07-13 | 1992-01-15 | Electronic Components Ltd | Vibration-proof screw-ring electrical connector. |
US5683271A (en) * | 1994-04-25 | 1997-11-04 | Leviton Manufacturing Co., Inc. | Lampholder with means to reject incorrectly dimensioned lamps |
WO2001028047A2 (es) * | 1999-10-13 | 2001-04-19 | Tobias Pader Jesus Eduardo | Socket elastico para articulos electricos |
WO2001028047A3 (es) * | 1999-10-13 | 2001-06-07 | Pader Jesus Eduardo Tobias | Socket elastico para articulos electricos |
CN100395924C (zh) * | 2006-02-20 | 2008-06-18 | 林家鹳 | 灯头转换装置 |
Also Published As
Publication number | Publication date |
---|---|
FR2440097B1 (de) | 1982-08-20 |
DE2963505D1 (en) | 1982-09-30 |
ES246454U (es) | 1980-04-01 |
ES246454Y (es) | 1980-10-01 |
ATE1439T1 (de) | 1982-08-15 |
EP0011008B1 (de) | 1982-08-04 |
FR2440097A1 (fr) | 1980-05-23 |
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