DE2301274A1 - CONTACT MECHANISM FOR LAMP SOCKETS - Google Patents

Description

PATENT AGENCY OFFICE TlEDTKE - BüHLING - KlNNE 2301274

TEL. (0811) 539653-56 TELEX: 524845 "pat CABLE ADDRESS: Germaniapatent Munich

8000 Munich 2

Bavariaring4 _{January 11} , 1973 P.O. Box 202403

Reeves and Co (Birmingham) Limited
Birmingham (Great Britain)

Contact mechanism for Lanipen sockets

The invention "relates to contact mechanisms
for lamp sockets, in particular, but not exclusively, on contact mechanisms for bayonet socket lamp sockets. Such contact mechanisms were previously known as "Ötcmpel" or ";tonpolei'äiGite·".
Even today they are often referred to as such.

There are three main types of lampholders, on the one hand those with a metal body and on the other hand those
with a body made of a plastic material and, thirdly, those made of ceramic. All of these and other types contain a contact mechanism or a stamp unit whose output

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it is an electrical connection between the bulb or the base inserted into the lighting fixture and the one connected to the lighting fixture To manufacture wires.

The individual components of such punches were previously usually made by turning on a series production turning mechanism manufactured.

The present invention provides a collision mechanism for a lamp socket has been proposed which has a pressed, cylindrical, metallic, outer housing has a first end and a partially clogged one second end, a pressed, metal stamp part that movable in part within the au. Eren housing arranged and protrudes through the second end, and that is elastically urged outwardly from the first housing by means of a spring, one mounted on the stamp part Locking device which can come into engagement with the partially obstructed second end, and a hollow, pressed one cylindrical metallic part inside the first Housing is disposed adjacent the first end, wherein dl- "Pc which can come into engagement with the further part.

The outer casing can weep a partially clogged crop end. Through the side of the Gehilusea and d- '~ s hollow metallic part keuin for a Feratr.tellpchrfuihe a

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Hole be formed. The first end may be obstructed in part by an inwardly directed lip. The feather may be made of a resilient metal like corrosion resistant steel, phosphor bronze, beryllium copper or a non Corrosion-resistant steel, while the rest of the components can be made of brass or steel.

The present invention also provides a method to put together a contact mechanism in which one into a first end of a pressed, cylindrical, metallic outer housing, a hollow pressed cylindrical metallic part uses a spring and a pressed metallic stamp part and the second end of the outer housing partially closed to hold the stamp part and the spring therein.

The second end can be partially closed by crimping or crimping it around his Reduce diameter.

The present invention also provides a method for assembling a contact mechanism, which includes the following procedural steps: Use a pressed cylindrical metallic outer housing with a partially clogged second end, a

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inserting a pressed metallic punch through the first end so that it protrudes partially through the second end, Insertion of a spring into the housing in contact with the punch and insertion of a hollow pressed cylindrical Part in the first end, the spring between the stamp unit and the hollow pressed part is compressed.

The first end can then be partially added, which can be achieved by closing, for example by means of Pressing can be done to the hollow pressed cylindrical To hold part in its position.

The invention is illustrated below by means of schematic drawings and an off ^; example described in more detail

Figure 1 shows a cross section of an assembled Contact mechanism.

FIG. 2 shows an exploded view of one unit before assembling.

With full reference to Figure 1 it can be seen since ß the contact mechanism includes an outer housing 1, in which a hollow cylindrical part 2 at the top or first end fixed lot. At the lower or second end

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of the housing 1, a stamp part 3 is provided. A .Feder 4 acts between the part 2 and the Punch 3 to hold the punch in the pushed out position. A screw 5 protrudes through the Side wall of the housing 1 and the side wall of the Part 2 into a central recess 6. An opening 7 leads through the ends of the housing 1 and the part 2 outside in the cavity 6.

The spring 4 is made of corrosion-resistant steel, while the remaining parts are made of brass »

first stage in the manufacture of the contact mechanism consists in the formation of the individual components, which in FIG are shown. The housing 1 is produced by a simple pressing process, as is the part 2, as well as the Stenipel unit 3. It can be seen that these units are extremely simple and can be quickly produced in a pressing process. The outer case 1 receives an inwardly ra. ^ Enöe lip 8 when pressed, against which the end of part 2 when assembling is pressed into the unit. The temple 3 also has an outwardly r-u ending lip 10, its mode of operation explained below. For the purpose of assembling the parts the part 2 is first pressed into the housing 1,

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in which it has a firm seat. The spring 4 is then inserted into the plunger 3 and the plunger is pushed into the housing 1. The stamp is of such a size that it can move freely within the outer housing 1. If Ue :? The stamp is inside the housing 1, with the lip 10 taking up an adjusting ring, as shown in dashed lines in FIG. 2, vd.rd the second or lower end of the housing 1 bent over towards the center, as indicated by the reference numeral 11 in FIG. 1 is shown so that in this way the stamp 3 is a _r .efanren and fetched inside the housing.

Through the sides of the housing 1 and the part 2 is then a hole was drilled into which a following one followed Thread is cut so that it catches the screw. 5 can accommodate.

Once assembled, the contact mechanism becomes in a known ceramic or plastic light receptacle base inserted, which is usually a bayonet socket or a small bayonet socket holder int, but the unit also serves as a middle contact for a Edison screw barrel can serve. The wire, with that of the Mechanism is connected is introduced through the opening 7 and fixed with the help of screw 5.

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It goes without saying that the procedure for the production of the contact mechanisms is determined to a large extent by the costs involved. Until now it would be common to use the contact mechanisms of this type To manufacture turning. With the invention it becomes possible for jedo.ch to rush them in a simple way with a pressing tool. The main function of part 2 is that it offers a simple way of converting the . To increase the thickness of the wall through which the screw 5 is inserted. When the outer case would only be used on its own, this would result in a wall mounting die that would not be sufficient for the Screw 5 to obtain a suitable effective and safe engagement. When "using a sufficiently thick housing 1, however, would include the additional material below theB Part 2 wasted. The manufacturing price for the manufacture The contact mechanisms would thereby change in such a way design that this waste of material would outweigh the Eonsten benefits obtained by using the pressing process instead of turning to be recovered.

It is further ersieht lic ^1., That other methods within the erfindvmgsgemäßen range may be used. For example, the inwardly facing lip 8 can be removed and the housing 1 can be provided with a taper which converges in the direction of the first end, so that the part 2 presses the taper on and

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is jammed with this.

A further alternative for the manufacture of the arrangement can consist in that a simple cylindrical one Housing 1 is formed, and that the part 2 is pressed in from the first end instead of m ^ n it from the second end as described above. In addition, if there is an introduction of the wire in the contact mechanism from the side is required, the upper end of the housing 1 is made continuously at the beginning as well as the part 2 with its top side down, compared to the one shown in FIG Arrangement, are introduced. A threaded one Hole could then through the upper part of the contact mechanism; nismuses are incised, while a large hole suitable for insertion of the wire, subsequently could be formed by the .Seitenwandung of the contact mechanism. The wire would then be against the lip 8 are pressed, which suitably inwardly could be trained to make a sufficient electrical connection.

The contact mechanism can also be provided with a soldering lug which protrudes upwards from the lip 8 and replace the screw 5 and the screw hole would.

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The definition of the external shape of the unit is only based on the requirements of the components, in which it should fit. You could therefore be cylindrical, hexagonal, octagonal, or rectangular somehow shaped son.it according to the requirements be.

The contact mechanism must be _{made of} brass as described above. 33s, however, it can be seen that it can be made of any other suitable electrically conductive material, provided that this material is deformable by a pressing operation.

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Claims (1)

Claims i.yKont lctme mechanism for a lamp socket, characterized by a pressed cylindrical meta3.lisch.es outer casing (1), v / elches a first End and a partially added second end contains a pressed metallic Stonipel part (3) which is slidable arranged in part within the outer housing is, protrudes through the second end and resilient by a spring (4) to the outside of the first housing is printed, a locking device (10) on the Steiitpelteil (3) i which is in contact with the partially clogged second end (11) can occur, as well as a hollow pressed cylindrical metallic part (2), the inside of the first housing (1) in the vicinity of the harvest End is attached, with the peder (4) .in contact with the other part (2) can step, β contact mechanism according to claim 1, characterized g e k e η η ζ e i e h η e t, dciß the outer housing (1) reveals a partially added first end (B). 3 * contact mechanism according to claim 2, ^ characterized, ge Jc & m. Η ζ ei c! Met, cluss the -er nt «end by a η ch ίίΐηβη ra ,, cjiu-e lip partly added i ;; t _o 309831/111 ^ 92 - 11 - 4. Cont-ict mechanism according to claim 1 to 3 »thereby characterized in that by the side wall of the housing (1) and the hollow metallic Part (2) a 'hole for a locking screw - (5) goes. 5. Koncakt Mechanism according to one of the preceding claims 1 to 4 »'characterized by that the spring (4) made of elastic material, such as corrosion-resistant Steel, phosphor bronze, betfyllium copper or non-corrosion-resistant steel, and that the remaining components are made of Mesηing or steel. 6. Method of assembling a contact mechanism, characterized by the steps of inserting a hollow pressed cylindrical metal part into a first end of a pressed cylindrical metallic outer housing, inserting a spring and a pressed metallic stamp part in the housing and partially closing the second end of the outer Housing to hold the stamp part and the spring in place. 7. The method according to claim 6, characterized in that the second end by pushing in 309831/0892 of the end zv / corner diameter reduction is partially closed. 8. A method for assembling a contact mechanism, characterized in that one a pressed cylindrical metallic outer housing takes which a partially clogged second Has end, through the first end a pressed metallic punch is inserted so that it is partially through the second end protrudes, inserts a spring into the housing into engagement with the punch, and a hollow pressed inserting the cylindrical part into the first end, the spring between the punch unit and the hollow, pressed one Part is compressed. 9. The method according to claim 8, characterized in that that the first end is then partially pressed in to add to the hollow one include cylindrical part in its location. 309 831/0892