DE2913901C2 - Electric lamp holder - Google Patents

Description

50

The invention relates to an electric lamp Solution, for example for an indicator light, consisting of two with the connecting conductors of the corresponding Lamp connectable flat plug pins and a housing base with through openings for the flat plug pins, the flat plug pins from double made of folded sheet metal sections, the bending edge of which forms the plug tip, from which cut. Insertion depth limit stops are bent, furthermore the ends located in the interior of the housing the connector pins approximately matched the cross section of the connecting conductor of the lamp to be used, coaxial to the Have longitudinal extension extending widenings and each connector pin over a considerable Part of its length is guided by guide walls formed on the housing base.

From DE-OS 22 50 007 such a lamp holder is known, which for so-called bi-pin

Lamps is suitable

Such lamps are provided with connector pins, which are considerable compared to simple conductor wires Possess stiffness. For the direct connection of the connecting conductors of a glow lamp or an LED These lampholders are not suitable because neither one exact coaxial guidance of the conductors when inserting the same still a sufficient spring-contact pressure is achieved.

This lamp socket may be sufficient for a simple plug connection to replace the previous one Required solder connection between the leads of glow lamps, LEDs or the like is it insufficient.

Proceeding from this, the invention is based on the object of developing a lamp of the type mentioned at the beginning to create a high clamping force and precise guidance of the conductor with simple assembly Plugging in allows

Both are contrary requirements, because supposedly either only increases the clamping force can be, which complicates the insertion process, or the introduction of the conductor is facilitated, which results in low contact pressure and low contact area The object is achieved according to the invention in that the widenings are funnel-shaped and each plug pin is secured against spreading open at its longitudinal edges by the guide walls that the widenings also open out centrally from the end face of the connector pins and that the connector pins in This area protrudes from the upper edge of the housing at least by the height of the widening.

The funnel-shaped design of the expansion enables a directed and guided insertion of the relatively unstable conductor ends. Due to the side guide walls that hold the connector pin longitudinal edges, so that they cannot spread apart, a forced guidance in the axial direction of insertion is effected Connector pins can only expand elastically in the area following the expansion axially, while the side edges are held in contact with the guide walls. The connecting conductors slide consequently inevitably axially deep into the connector pins, with a high one over the entire insertion depth Contact pressure or high clamping force is generated.

The central arrangement of the widenings is useful and advantageous for setting an even distribution of force. So that threading the ladder in the widening can be done pin-fold and with little effort, protrude beyond the widened Areas of the case back including side walls. So they are freely accessible.

The lamp socket can be assembled in a simple, inexpensive, semi-automatic manner by first applying the Flat plug pins are inserted as far as they will go on the bottom of the housing, then the connecting conductors of the Glow lamp or the like. Introduced into the widenings and pushed between the sheet metal side walls forming the plug part.

The widenings serve as an insertion aid and ensure correct alignment of the connecting conductors, About this prefabricated unit, which by mechanical handling to an electrically conductive Connection between the connector pins and the glow lamp leads, the cover cap is then clipped, which is a results in additional stabilization of the contact point. Replacing defective glow lamps is also in

easily possible.

If glow lamps with extinguishing resistance are to be installed, it is advantageous that between the Plug pin receptacles in the bottom of the housing rectangular open blind hole in the same direction as the receptacles Cross-section is excluded, in which an elongated extinguishing resistor is inserted approximately in a form-fitting manner is, and that on each connector pin off-center a corresponding to one end of the quenching resistor Federlapcen is cut out that also the Blind hole wall is slotted in the displacement area of the spring tabs for its penetration, so that the Form the slots with the blind hole in a Z-shape in plan view.

For assembly, the erase resistor is first inserted into the blind hole in the bottom of the housing and then the flat connector pins in the correct position, that is, inserted in an orientation rotated by 180 ° Resistance already pre-fixed because the spring tabs, one of the flat connector pins at one end of the contact of the resistance and the other of the other Flachsteoker pin at the other contact end, the Resistance under spring tension against the ground of the blind hole.

After installing the glow lamp and the cover cap, the resistor, the flat connector pins and the Glow lamp fixed immovably.

In order to use one and the same housing base with different cover cap diameters can, it is proposed that a reducer is clamped in the mouth of the cap. Of the The case back is then placed on the smallest cap diameter. For larger cap diameters appropriate ring-shaped spacers are clamped

An embodiment of the invention is shown in the drawing. It shows

F i g. 1 a housing base with flat connector pins, glow lamp, series resistor and extinguishing resistor in Side view partially cut; F i g. 2 a T.eduzierstück in section;

F i g. 3 a cover cap in section;

F i g. 4 the F i g. 1 seen from above;

F i g. 5 a flat plug pin as a sheet metal cutout;

F i g. 6 also seen from above; F i g. 7 the same in side view.

The indicator light consists essentially of one Cover cap 1, a reducer 2, a housing base 3, two flat plug pins 4, a glow lamp 5 with connecting conductors 6 and a series resistor 7 and a quenching resistor 8.

The cap 1 can be latched to the housing base 3 either directly or, depending on the diameter, with the interposition of a reducer 2; For this purpose, the latter latching lugs 3 "and the reducer 2 catches 2" on the L in ^a corresponding recesses of the cap 1 and engage the reducer 2, wherein the edge 2 ^b and 3 ^b serves as Einstecktiefenbegrenzung

The cap 1, the reducer 2 and the housing base 3 are made of plastic the cover cap 1 completely, but at least its top plate 1 * made of translucent or transparent, optionally colored material.

^{A guide pin 3 C} protrudes outward from the housing base 3. To the right and left of these and separated by them, the flat ^{pins 4 are leaked from the inside to the outside through the through openings provided in the floor, so that their cut plug depth limit stops 4 a} are supported on the floor 3. In the radial outward direction, they are resiliently supported on the side wall 3 ^{d, which is slightly recessed there.} On the longitudinal edges of the plug pins 4, the bottom 3 forms guide walls which are closely matched to the cross section of the plug pins and hold them against spreading.

In the center of the end face of the connector pins 4, approximately funnel-shaped widenings 4 * are formed, into which the ends of the connecting conductors 6 can be inserted. The insertion depth is considerably greater than the depth of the widenings 4 ⁶ . The connector pins 4 protrude beyond the side walls 3 ^d by more than the depth of the widenings 4 *.

Between the connector pins 4 3 ^C is a blind hole 3 except 'above the guide pin, the 3'einenends by the other end to the left with the joint bushings in communication through slots to the right in the blind hole 3 ^C, the quenching resistance 8 is placed so that its end contacts 8 * im Area of the slots 3 'lie. ^{Spring tabs 4 C} cut on the connector pins 4 press the quenching resistor 8 at its contacts 8 ° resiliently and electrically contact-making against the Sack'ochbodsn.

1 sheet of drawings

Claims (3)

Patent claims: 1.Electric lamp socket, for example for an indicator light, consisting of two flat plug pins that can be connected to the connecting conductors of the corresponding lamp and a housing base with through-holes for the flat plug pins, the flat plug pins consisting of double-folded sheet metal sections, the bending edge of which forms the plug tip, from which the cut-out insertion depth limit stops are bent out, furthermore the ends of the plug pins located in the interior of the housing have widenings which are approximately matched to the cross section of the connecting conductors of the lamp to be used and which run coaxially to the longitudinal extension of the plug and each plug pin is guided over a considerable part of its length by guide walls formed on the housing base, characterized in that the Expansions (4 *) are funnel-shaped and each connector pin (4) is secured against spreading at its longitudinal edges by the guide walls (3 °), so that furthermore the open because ungen (4 *) open in the middle of the end face of the connector pins (4) and that the connector pins (4) in this area protrude beyond the upper edge of the housing by at least the height of the widening (4 *). 2. Lamp socket according to claim 1, characterized in that between the pin receptacles in the housing base (3) an open blind hole (3 ^f ) of rectangular cross-section is excluded, in which an elongated extinguishing bar (8) is inserted approximately positively, and that off-center a is cut at one end (8 ') of the erasing resistance (8) corresponding spring tabs (4 ^r) to each-.m plug pin (4), that furthermore the Sacklochwandung in the displacement range of the spring tabs (4 ^C) is slotted for the penetration, so that the slots (39 with the blind hole (3 ^C ) form a Z-shape in plan view. 3. Lamp socket according to claim 1 or 1, characterized in that a cover cap (1) is provided, in the mouth of which a reducer (2) is clamped.