DE1489578B2 - - Google Patents

Description

The invention relates to an incandescent lamp socket with a thread made of insulating material and a thread for holding the lamp base having socket, which with a channel running approximately in the axial direction for inserting the power supply cable is provided, from which the stripped end of the power supply cable into the interior the socket is guided and rests against the lamp base.

In such incandescent lamp sockets, apart from the contact spring for the center contact, there are no metal parts required because the stripped end of the power supply cable is the conductive connection with the threaded socket who makes lightbulbs.

There are incandescent lamp sockets known in which the stripped end of the power supply cable to a on the socket provided cross web is looped and fixed there by means of a knot (U.S. Patent 2,524,280). This type of fastening is cumbersome and time-consuming to manufacture and can if the knot is too large, prevent the bulb from being screwed in.

It is also known to provide the socket with a channel running approximately in the axial direction, through which the stripped end of the power supply cable is guided into the interior of the socket and when screwing in the light bulb rests against the lamp base (German Auslegeschrift 1 117 748). At this known incandescent lamp socket, the power supply cable is not against unintentional pulling out secured from inside the socket

The invention is based on the object of creating an incandescent lamp socket in which the power supply cable after screwing in the bulb from the threaded base in the fixed position is held and secured against unintentional pulling out.

This object is achieved according to the invention in that the one for inserting the power supply cable serving channel consists of two mutually arranged sections that from the wall of the Socket a web is formed around which the stripped end of the power supply cable is wrapped is, and that serving to introduce the power supply cable section of the channel in such a way on the inner wall the socket and so deep

ίο is dimensioned that the power supply cable with its The insulating jacket protrudes slightly into the interior of the socket and rests against the lamp base there. By this formation of the socket is pressed into the lamp base when the bulb is screwed in the insulating jacket of the power supply cable, whereby both clamp each other. This has the Advantage that, in addition to the power supply cable, there is also the incandescent lamp against loosening due to vibrations from the vehicle is secured.

ao In order to achieve a good jamming, in a preferred embodiment of an incandescent lamp socket According to the invention, the two sections of the channel on the opposite of the thread Side of the inner wall of the socket

a5 se arranged.

The subject matter of the invention is illustrated in the drawing using a few exemplary embodiments, and

although shows

F i g. 1 shows a longitudinal section through the socket with inserted power supply cable,

F i g. 2 is a plan view of the socket,
F i g. 3 a view of the socket from below,
F i g. 4 shows a longitudinal section through a socket with an attached reflector.

The in the F i g. 1, 2 and 3 shown consists of a lamp socket made of insulating material Socket 1, the bore 2 with a thread 3 for screwing the lamp base 4 of the Incandescent lamp 5 is provided. On the opposite side of the thread 3, the socket 1 is with a channel running in the axial direction for introducing the power supply cable 10 is provided; the cuts 11 and 12 of the channel are arranged to one another in such a way that from the wall of the socket 1 a web 13 is formed. When connecting the power supply cable 10, the stripped end 14 is around the web 13 put around and guided into the bore 2 of the socket 1, where there is the electrically conductive Connection to the lamp base 4 establishes. The depth of the for inserting the power supply cable 10 Serving section 11 of the channel is dimensioned here so that the insulating jacket of the power supply cable 10 still protrudes somewhat into the bore 2 of the socket 1 and rests against the lamp base 4 there.

This training squeezes the lamp base 4 when the incandescent lamp 5 is screwed into the insulating jacket and causes a mutual jamming of the power supply cable 10 and the lamp base 4 of the incandescent lamp 5 in the socket 1 (Fig. 4).

The socket 1 can be provided with a cylindrical extension 6 on the outer periphery, with which they in one on the luminaire housing or, as in F i g. 4 shows a hole 8 provided in a reflector 7 can be used. The depth of insertion of the socket 1 is limited by an edge 9.

1 sheet of drawings

Claims (2)

Patent claims: 1. Incandescent lamp socket with one made of insulating material and one thread for the bracket of the lamp base having socket, which with a running approximately in the axial direction Channel for inserting the power supply cable is provided, from which the stripped The end of the power supply cable is guided into the interior of the socket and on the lamp base applied, characterized in that the channel consists of two so arranged to one another Sections (11, 12) consists that a web (13) is formed from the wall of the barrel socket (1) to that the stripped end (14) of the power supply cable (10) is laid around, and that that for insertion of the power supply cable (10) serving section (11) of the channel in such a way on the inner wall the socket (1) and is dimensioned so deep that the power supply cable (10) with its insulating jacket still protrudes a little into the interior of the socket (1) and there on the lamp base (4) is applied. 2. Incandescent lamp holder according to claim 1, characterized in that the two parts (11, 12) of the channel in the side of the inner wall of the socket which is opposite the thread (3) (1) are arranged.