EP0332276A1 - Contact element - Google Patents
Contact element Download PDFInfo
- Publication number
- EP0332276A1 EP0332276A1 EP19890200555 EP89200555A EP0332276A1 EP 0332276 A1 EP0332276 A1 EP 0332276A1 EP 19890200555 EP19890200555 EP 19890200555 EP 89200555 A EP89200555 A EP 89200555A EP 0332276 A1 EP0332276 A1 EP 0332276A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- duct
- contact
- bottom plate
- cap
- contact element
- 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
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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
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
- H01R25/142—Their counterparts
Definitions
- the invention relates to a contact element intended to be removably mounted on a wiring duct with a substantially U-shaped cross-section, said duct, on its inner walls, being provided with continuous bare conductors having an insulating shield with a longitudinal slot, contact pins of said contact element being adapted to be inserted through a respective longitudinal slot of said shield after mounting said element on said duct, in order to be contacted under spring tension with the conductor in question, at least the earth conductor being arranged on the bottom of said duct, said contact element, moreover, being provided with laterally extending locking claws which are adapted, when mounting said element by a rotational movement, to grip behind undercut edges defining the opening of said duct, in order to lock said element in said duct.
- a wiring duct of this kind is, for instance, known from NL-C 170 787.
- Such wiring ducts find a still increasing application, in particular in office and factory spaces, said ducts allowing to make connections for lighting appliances in arbitrary points.
- Auxiliary elements for making a branch connection comprise a housing to be arranged on a duct and bearing on the open side of said duct, and being provided with lateral portions adapted to being applied against the lateral walls of said duct, a rotatable body provided with claws then being inserted into the inner space of said duct, said body being provided with a projecting operating handle by means of which said body can be rotated so as to engage said claws with the duct edges.
- the current bearing contact pins are rotated in such a manner that they are contacted with the conductors arranged in the lateral wall of the duct.
- Such an auxiliary element might, as such, be provided with a single or multiple socket allowing to make a branch connection by means of a cord with a contact plug.
- the whole assembly will become rather high which, in the case of visible ducts, will be unsightly, and, moreover, its manufacture is complex and, therefore, relatively expensive, since wire connections between the auxiliary element and the female contacts of the socket are to be made.
- this contact element is characterised in that said contact element comprises a bottom plate which is wider than the duct opening and is provided, at its lower side, with an integrally moulded claw body having claws extending transversely to the longitudinal axis of said plate, this in such a manner that, after insertion into the duct and by a rotation of said bottom plate until its longitudinal axis has become substantially parallel to the duct axis, said claws will engage the duct edges, said claw body being provided with contact pins which, after insertion, are adapted to contact said current conductors, said body, moreover, having a through bore into which a grounding pin is or can be inserted so as to be contacted with said earth conductor, in that said bottom plate is provided with female contacts or contact springs connected with at least said current contact pins, and in that said contact element comprises a detachable cap which, after locking said bottom plate on said duct, can be fixed on said bottom plate, the edge portions of said cap then engaging the edge portions of said duct so as to secure
- This contact element which has a very small height is used for all the applications, and only this cap is then to be adapted to the different possibilities of use, such as for sockets with or without an earth connection, a switch element or the like. Mounting said bottom plate on a duct takes place in a very simple manner, no operating handle being needed thereto, and the eventual securing against rotation is provided by said cap.
- This contact element is not exclusively intended for the ducts as described in NL-C 170 787, but can also be used with ducts of a different type, provided that its contact pins are adapted to the position of the conductors of such a duct.
- the contact element shown in the drawing comprises a bottom plate 1 and a cap 2.
- the bottom plate is adapted for being mounted on a wiring duct 3.
- the duct 3 as shown is the wiring duct according to NL-C 170 787, but the invention is not restricted to the application thereof to such a duct.
- the bottom plate 1 is provided in its central portion with a projecting and integrally formed claw body 4, said body having a core 5, a claw edge 6 and a projection 7.
- the claw edge 6 is, in the tranversal direction, wider than in the longitudinal direction, as shown in fig. 2.
- the core 5 is substantially circular, but the projection 7 has, in the transversal direction of Fig. 1, a smaller thickness than in the longitudinal direction of Fig. 2.
- the bottom plate is provided with circumferential upstanding walls 8 defining a box-like space on which a cover 9 is fixed.
- the bottom plate is to be fastened on the duct 3.
- the bottom plate is placed with its longitudinal direction transversely to the longitudinal direction of the duct 3, and its claw body 4 is inserted into the duct 3.
- This duct has inwardly directed longitudinal edges 10 defining its opening, the free space between these edges 10 being smaller than the largest width of the claw edge 6. If, then, the bottom plate 1 is rotated, the wider part of the claw edge 6 will grip behind these edges 10, so that the bottom plate 1 is fixed on the duct 3.
- the duct 3 also possesses two lateral cavities 11 and a bottom cavity 11′, in which hollow resilient conductors 12 and 12′ resp. are arranged, which cavities each are provided with an entrance slot 13 and 13′ resp.
- NL-C For further particulars of such a duct, reference is made to the above-mentioned NL-C.
- two strip-like conductors 14 extend which, on the one hand, are situated laterally of the projection 7, and have, there, an extremity 14′ bent outwards, said extremities, which the bottom plate 1 has been rotated in the operative position as shown in Fig. 1, projecting into the corresponding slot 13, and will contact, there, the respective conductor 11.
- said strips are bent outwards in the box-like portion within the walls 8 at 14 ⁇ , and, there, each strip is connected with a corresponding contact spring pair 15, e.g. by means of a rivet connection 16.
- Each pair of contact spring strips 15 forms a contact spring, and the extremities thereof are bent at 17, and this in such a manner that both strips are adapted to engage opposite sides of a contact pin inserted through a hole 18 in the cover 9.
- annular projections 19 are formed on the bottom plate 1 acting as a seat for such a contact pin.
- the cap 2 shown mainly corresponds with the cap of a double wall socket, in the case shown a wall socket with earth contacts.
- This cap 2 has a recessed portion 20 for accommodating a contact plug, the botton 21 of said recess being provided with holes 22 corresponding with the holes 18 in the cover 9.
- a conducting strip 23 is arranged, which is provided with two pairs of earth contact springs 24 projecting inwards through slots 25 into the recesses 20 in question.
- a long flat pin 26 is connected with said strip 23. Said pin extends, in the mounted condition of the cap, through a hole 27 in the cover 9, and into a corresponding slot 28 in the body 4, said pin being so long that it projects through the slot 13′ of the bottom cavity 11′ of the duct 3 for making contact with the grounded conductor 13′.
- said strip 23 serves to support mounting screws 29 to be screwed into screw holes 30 of the bottom plate 1 in order to fix the cap.
- Both terminal walls 31 of the cap 2 are provided with a recess 32, having a width which is equal to that of the duct 3. In the mounted condition, the edges of said recesses grip around the duct 3, thus securing the bottom plate against rotation.
- the extremities 14′ of the strips 14 should be adapted accordingly.
- the extremities 14′ should be directed downwards.
- the portion of the body 4 carrying these contact strips 14 should not hinder the rotation of the plate 1.
- This can be obtained by accommodating said strips 14, and, as the case may be, also the grounding pin 26, in a core of the body 4 which is rotatable in the interior of said body, and is, for instance, maintained by means of a spring in such a position that, when inserting the body 4 in a duct 3, the various contact pins will be situated in the correct position in front of the bottom conductors.
- the connection with the contact spring strips 15 can be formed, for instance, by contact points at the upper end of the rotatable core, which will contact said strips 15 only in the rotated position of the plate 1.
Abstract
Description
- The invention relates to a contact element intended to be removably mounted on a wiring duct with a substantially U-shaped cross-section, said duct, on its inner walls, being provided with continuous bare conductors having an insulating shield with a longitudinal slot, contact pins of said contact element being adapted to be inserted through a respective longitudinal slot of said shield after mounting said element on said duct, in order to be contacted under spring tension with the conductor in question, at least the earth conductor being arranged on the bottom of said duct, said contact element, moreover, being provided with laterally extending locking claws which are adapted, when mounting said element by a rotational movement, to grip behind undercut edges defining the opening of said duct, in order to lock said element in said duct. A wiring duct of this kind is, for instance, known from NL-C 170 787. Such wiring ducts find a still increasing application, in particular in office and factory spaces, said ducts allowing to make connections for lighting appliances in arbitrary points. Auxiliary elements for making a branch connection comprise a housing to be arranged on a duct and bearing on the open side of said duct, and being provided with lateral portions adapted to being applied against the lateral walls of said duct, a rotatable body provided with claws then being inserted into the inner space of said duct, said body being provided with a projecting operating handle by means of which said body can be rotated so as to engage said claws with the duct edges. Thereby the current bearing contact pins are rotated in such a manner that they are contacted with the conductors arranged in the lateral wall of the duct.
- Such an auxiliary element might, as such, be provided with a single or multiple socket allowing to make a branch connection by means of a cord with a contact plug. However the whole assembly will become rather high which, in the case of visible ducts, will be unsightly, and, moreover, its manufacture is complex and, therefore, relatively expensive, since wire connections between the auxiliary element and the female contacts of the socket are to be made.
- It is an object of the invention to provide a contact element for being used with such a duct, which element has a simple structure, fits smoothly on said duct, and is adaptable by means of unitary parts to various circumstances.
- According to the invention this contact element is characterised in that said contact element comprises a bottom plate which is wider than the duct opening and is provided, at its lower side, with an integrally moulded claw body having claws extending transversely to the longitudinal axis of said plate, this in such a manner that, after insertion into the duct and by a rotation of said bottom plate until its longitudinal axis has become substantially parallel to the duct axis, said claws will engage the duct edges, said claw body being provided with contact pins which, after insertion, are adapted to contact said current conductors, said body, moreover, having a through bore into which a grounding pin is or can be inserted so as to be contacted with said earth conductor, in that said bottom plate is provided with female contacts or contact springs connected with at least said current contact pins, and in that said contact element comprises a detachable cap which, after locking said bottom plate on said duct, can be fixed on said bottom plate, the edge portions of said cap then engaging the edge portions of said duct so as to secure the assembly against rotation and, thus, to complete the locking, and contact or switching means provided in said cap or cooperating therewith being adapted to be contacted with the female contacts or contact springs of said bottom plate when mounting said cap.
- The bottom plate of this contact element which has a very small height is used for all the applications, and only this cap is then to be adapted to the different possibilities of use, such as for sockets with or without an earth connection, a switch element or the like. Mounting said bottom plate on a duct takes place in a very simple manner, no operating handle being needed thereto, and the eventual securing against rotation is provided by said cap.
- This contact element is not exclusively intended for the ducts as described in NL-C 170 787, but can also be used with ducts of a different type, provided that its contact pins are adapted to the position of the conductors of such a duct.
- The invention will be elucidated below in more detail by reference to a drawing, showing in:
- Fig. 1 a cross-section of a known wiring duct with a contact element according to the invention arranged therein and with a separately shown cap;
- Fig. 2 a cross-section according to the line II - II of Fig. 1; and
- Fig. 3 a top view, partly in section, of the bottom plate of Fig. 1.
- The contact element shown in the drawing comprises a
bottom plate 1 and acap 2. The bottom plate is adapted for being mounted on awiring duct 3. Theduct 3 as shown is the wiring duct according to NL-C 170 787, but the invention is not restricted to the application thereof to such a duct. - The
bottom plate 1 is provided in its central portion with a projecting and integrally formedclaw body 4, said body having acore 5, a claw edge 6 and aprojection 7. The claw edge 6 is, in the tranversal direction, wider than in the longitudinal direction, as shown in fig. 2. Thecore 5 is substantially circular, but theprojection 7 has, in the transversal direction of Fig. 1, a smaller thickness than in the longitudinal direction of Fig. 2. - At the upper side the bottom plate is provided with circumferential
upstanding walls 8 defining a box-like space on which acover 9 is fixed. - As appears from Fig. 1, the bottom plate is to be fastened on the
duct 3. To that end the bottom plate is placed with its longitudinal direction transversely to the longitudinal direction of theduct 3, and itsclaw body 4 is inserted into theduct 3. This duct has inwardly directedlongitudinal edges 10 defining its opening, the free space between theseedges 10 being smaller than the largest width of the claw edge 6. If, then, thebottom plate 1 is rotated, the wider part of the claw edge 6 will grip behind theseedges 10, so that thebottom plate 1 is fixed on theduct 3. - The
duct 3 also possesses twolateral cavities 11 and abottom cavity 11′, in which hollow resilient conductors 12 and 12′ resp. are arranged, which cavities each are provided with anentrance slot - Through the
portions 5 and 6 of theclaw body 4, two strip-like conductors 14 extend which, on the one hand, are situated laterally of theprojection 7, and have, there, anextremity 14′ bent outwards, said extremities, which thebottom plate 1 has been rotated in the operative position as shown in Fig. 1, projecting into thecorresponding slot 13, and will contact, there, therespective conductor 11. On the other hand said strips are bent outwards in the box-like portion within thewalls 8 at 14˝, and, there, each strip is connected with a correspondingcontact spring pair 15, e.g. by means of arivet connection 16. Each pair ofcontact spring strips 15 forms a contact spring, and the extremities thereof are bent at 17, and this in such a manner that both strips are adapted to engage opposite sides of a contact pin inserted through ahole 18 in thecover 9. In front of saidholes 18,annular projections 19 are formed on thebottom plate 1 acting as a seat for such a contact pin. - The
cap 2 shown mainly corresponds with the cap of a double wall socket, in the case shown a wall socket with earth contacts. Thiscap 2 has arecessed portion 20 for accommodating a contact plug, thebotton 21 of said recess being provided withholes 22 corresponding with theholes 18 in thecover 9. - At the inner side of the bottom 21 a conducting
strip 23 is arranged, which is provided with two pairs ofearth contact springs 24 projecting inwards throughslots 25 into therecesses 20 in question. In the central part a longflat pin 26 is connected with saidstrip 23. Said pin extends, in the mounted condition of the cap, through ahole 27 in thecover 9, and into acorresponding slot 28 in thebody 4, said pin being so long that it projects through theslot 13′ of thebottom cavity 11′ of theduct 3 for making contact with thegrounded conductor 13′. Moreover saidstrip 23 serves to support mountingscrews 29 to be screwed intoscrew holes 30 of thebottom plate 1 in order to fix the cap. - Both terminal walls 31 of the
cap 2 are provided with arecess 32, having a width which is equal to that of theduct 3. In the mounted condition, the edges of said recesses grip around theduct 3, thus securing the bottom plate against rotation. - If a normal socket without earth connection is desired, only an adapted
cap 2 without thecontact springs 24 and without thepin 26 is to be used, which can be mounted on thesame bottom plate 1. Therefore only one bottom plate is to be used for both kinds of sockets. - It is, of course, also possible to use, instead of the
earth contact springs 24, one earth contact pin as is usual in some countries. - Providing the
earth contact springs 24 and theearth contact pin 26 on the cap is necessary, since thebottom plate 1 is to be rotated when being inserted, and a flat pin inserted through aslot 13′ would not allow a rotation. - Moreover it will be clear that, in addition to sockets, other contact or switching means can be mounted on such a bottom plate, if they are provided with contact pins which can be contacted with the
contact spring extremities 17. It will also be clear that such a bottom plate can be made suitable for triple or multiple sockets. - For wiring ducts with conductors shaped in an other manner, the
extremities 14′ of thestrips 14 should be adapted accordingly. In the case of wiring ducts in which all the conductors are arranged on the bottom, theextremities 14′ should be directed downwards. In that case the portion of thebody 4 carrying thesecontact strips 14 should not hinder the rotation of theplate 1. This can be obtained by accommodating saidstrips 14, and, as the case may be, also the groundingpin 26, in a core of thebody 4 which is rotatable in the interior of said body, and is, for instance, maintained by means of a spring in such a position that, when inserting thebody 4 in aduct 3, the various contact pins will be situated in the correct position in front of the bottom conductors. When rotating theplate 1, the core of thebody 4 will then remain immobile. The connection with thecontact spring strips 15 can be formed, for instance, by contact points at the upper end of the rotatable core, which will contact saidstrips 15 only in the rotated position of theplate 1.
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8800592 | 1988-03-09 | ||
NL8800592A NL8800592A (en) | 1988-03-09 | 1988-03-09 | CONTACT PART. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0332276A1 true EP0332276A1 (en) | 1989-09-13 |
EP0332276B1 EP0332276B1 (en) | 1994-01-19 |
Family
ID=19851914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890200555 Expired - Lifetime EP0332276B1 (en) | 1988-03-09 | 1989-03-03 | Contact element |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0332276B1 (en) |
DE (1) | DE68912366T2 (en) |
NL (1) | NL8800592A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109985439A (en) * | 2019-04-10 | 2019-07-09 | 宁波锦隆电器有限公司 | A kind of water dust removal by filtration purification device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1347897A (en) * | 1962-11-23 | 1964-01-04 | Electrical installation comprising a profiled pipe and a socket fitting to said pipe | |
CH483132A (en) * | 1967-04-28 | 1969-12-15 | Staff & Schwarz Gmbh | Mounting arrangement for lights or light sockets |
FR2210032A1 (en) * | 1972-12-07 | 1974-07-05 | Soquenne Maurice |
-
1988
- 1988-03-09 NL NL8800592A patent/NL8800592A/en unknown
-
1989
- 1989-03-03 DE DE1989612366 patent/DE68912366T2/en not_active Expired - Lifetime
- 1989-03-03 EP EP19890200555 patent/EP0332276B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1347897A (en) * | 1962-11-23 | 1964-01-04 | Electrical installation comprising a profiled pipe and a socket fitting to said pipe | |
CH483132A (en) * | 1967-04-28 | 1969-12-15 | Staff & Schwarz Gmbh | Mounting arrangement for lights or light sockets |
FR2210032A1 (en) * | 1972-12-07 | 1974-07-05 | Soquenne Maurice |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109985439A (en) * | 2019-04-10 | 2019-07-09 | 宁波锦隆电器有限公司 | A kind of water dust removal by filtration purification device |
CN109985439B (en) * | 2019-04-10 | 2024-04-09 | 宁波锦隆电器有限公司 | Water filtering dust-removing purifying device |
Also Published As
Publication number | Publication date |
---|---|
DE68912366T2 (en) | 1994-05-11 |
NL8800592A (en) | 1989-10-02 |
EP0332276B1 (en) | 1994-01-19 |
DE68912366D1 (en) | 1994-03-03 |
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