DE1269723B - Nipple body for a fastening of a lamp socket to a power supply cable which serves as a pendulum cord and relieves tension on the socket clamps - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

Number:
File number:
Registration date:
Display day:

HOIr

German class: 2If-45

P 12 69 723.3-33
April 22, 1965
June 6, 1968

The invention relates to a nipple body for a fastening relieving tension on the socket clamps a lamp socket on a power supply cable serving as a pendulum cord, which the has to absorb the tension exerted by the lamp body, the nipple body in the thread the inlet opening of the socket carries threaded connector to be screwed in. For relieving the socket clamps Various measures are known from Zug.

Since the cable through the threaded connector into the interior of the socket head below the socket base occurs, you have created a supporting thickening at this point by z. B. a wrapping or a clamp-like support body attached to the cable or the cable end passed through the two holes of a plate-shaped support web. Take these remarks a relatively large amount of space within the socket space under the socket stone, which is for the accommodation of the cable cores is needed. It was therefore usually a consideration special version with large rear interior required.

In a version known from the German utility model 1 801 280, the upward directed nipple carrier designed as a thick-walled sleeve made of plastic, in the lower end of the Threaded connector is screwed in and in the space above two radial threaded holes with grub screws made of plastic are provided, which press the cable against the inner wall of the sleeve bore, wherein a recess is arranged opposite each threaded hole in the sleeve wall, so that the cable undergoes a deflection into this recess at this point. That was true a very secure strain relief, but only achievable provided that the screws were really dressed enough. However, strong screw pressure occasionally led to one Wire short circuit. The production of this plastic body required with regard to the radial threaded holes Complicated compression or injection molds and with regard to the demolding of the threaded holes a higher expenditure of time. In addition, the effort is made by the separately manufactured grub screws made of plastic and the time it takes to insert them. With these grub screws made of plastic also easily break out of the slots when tightening, so that they then neither when tightened, they can still be removed.

Is known from the German utility model nipple body for one of the socket clamps
Tension relieving attachment of a
Lamp holder on one as a pendulum
serving power supply cable

Applicant:

Hoffmeister & Son,

5880 Lüdenscheid, Am Neuenhaus 4

Named as inventor:

Hansmartin Hoffmeister, 5880 Lüdenscheid

1601092 also has a plastic nipple body, the consists of two shell halves obtained by longitudinal division, each of which is approximately S-shaped Includes cable tray proportionally, with both halves after storage of a suitably pre-bent Cable into the somewhat longer and wider dimensioned, at the lower end the threaded connector for the Socket supporting half are pressed together by two cross screws. With today's with a plastic sheath provided cables it is due to the bending stiffness of the same with large Skill and expenditure of time practically impossible to bend the cable exactly into the S-shape of the channel. As a result Due to the large restoring force, this cable immediately strives back to its original position, before the second half can be put on. But the bend in the cable deviates from the bend The cable tray also decreases slightly, so it is practically impossible to pull the screws to bring about this exact match of the cable shape with the cable tray, so the parts of the Cable into this exactly fitting, which is now on the rounded wall of the Have the cable tray in a slightly higher position. Rather, it is to be feared that the shell when used excessive screw pressure bursts, if not a particularly tough and elastic one Plastic is used. In such circumstances, the use of these cables may result in the intended strain relief effect cannot be fully achieved. Such work becomes the Costs are usually carried out on a piece-rate basis. It is therefore important that the introduction

809 558/138

3 4

that forms cables in the nipple heads quickly and with full housing, is known only for protection expired security can be carried out. This prevents the cable from twisting in relation to the pipe However, the condition cannot be fulfilled here. to push a molded body onto the cable, the

The invention is based on the object of one of the design of the web body in the nipple body To create nipple body for cord pendant lights, corresponds to 5 according to the invention, so in which the in which the cable clamps relieve tension through a fastening through the longitudinal channel the lamp socket on the cross bar to be introduced a bend between two Power supply cable is made much easier, so provided at the ends, otherwise diametrically apart from the introduction of the same, no special opposing crossbars experienced, but active and no tool application, d. H. I would also know that this body is still on the cable no threaded holes and no screws required, capable of shifting easily. This is required there that the attachment of the nipple body on the cable borrowed to the body in the area of the pendulum tube to be able to arrange in the shortest possible time and without application by the inner wall of the Rohsonderer Skill is made possible. res inwardly directed projections in such a

With the elimination of the disadvantages indicated, it was found that the side edges of the cable Known types, the task is set when the body is pushed in the direction of rotation a nipple body for a support the socket clamps on it. This tube pendant light was therefore from tension relieving attachment of a lamp bulb - no stimulation, the anti-rotation body with the sung at one as. Cord pendulum serving to combine electricity socket of a nipple body and for supply cable, one of the inlet opening ao the purpose of strain relief for cord pendant lights to insert threads to be screwed into the socket.

Nozzle up to one in the upper end face- In the drawing is the subject of the invention

has the outlet opening leading cable tray, shown in an embodiment, which is bent in such a way that the F i g. 1 shows the nipple body alone in the longitudinal

Cable experiences a strain-relieving bend and the 25 cut,

Holds nipple body immovably clamped, that F i g. 2 in a side view,

solved by that the threaded connector supporting F i g. 3 in cross section approximately in the longitudinal center

Base a specified point extending in its longitudinal direction,

the web with a directional after the longitudinal center line Fig. 4 is a longitudinal section through the associated

th cable tray, which in the middle area by 30 sleeve,

a cross web passing through it is interrupted F i g. 5 is a lower end view and

and through each the bottom wall of the web in front of and F i g. 6 a string pendant light with a sol-

behind the transverse web also penetrating hole with a small nipple cut in the longitudinal direction arranged in the bottom wall, according to the body.

Circumference of the same open, which is connected by the transverse 35 The nipple body consists of a bend of the cable receiving the threaded bar 1 ^a supporting base 1 and a side channel part, and that it is an integrally formed web 1 extending in the longitudinal direction ^b , which can be pushed over in the longitudinal direction, encloses the web in a length that is directed towards the longitudinal center line and is on a built-in channel l ^f . The cable tray l ^f is in the central area tied stop collar of the base releasably attached 40 through a transverse web l ^e under-sleeve that passes through it, the upper end wall of which is broken and protrudes through the bottom wall of the middle, the cable diameter corresponding zen web V> in front of and behind the transverse web l ^e piercing opening for the cable contains. In this way tendes hole \ ^c \ ^d with a likewise in the bottom arises a nipple body including the overall _wa nd arranged, after the periphery thereof toward threaded socket only consists of three parts, the ₄₅ open cable runner section V in conjunction. The Kabeiden plastic parts a very simple Formgestal- beiende is moved past have on the transverse web l ^e by the processing, since the metallic threaded socket hole] / and around the Querstegl ^e around by the same in the production of the web body with einge- Lochl ^c and then through the bore of the injection molding can be done. Insertion of the cable threaded connector 1 ° until the free end follows in a conceivably short time without any difficulty ₅₀ protrudes in a corresponding length. This end and without using tools. As soon as the cable is grasped with one hand, while the cable grasped after being passed through the two holes of the other hand is subjected to a stretching pull from the cable web and through the hole in the thread. The cable then takes the one shown in FIG. 6 nozzle is passed through, it only needs a dashed position. The transverse web 1 ^e produces a stretch in the train to the nipple body ₅₅ immovably at the gutter portion V of the web lying bend to fix it. holds the nipple body immovably clamped,

The inner diameter of the sleeve can be measured in such a way that the edges of the holes l ^c , l ^d are firmly fixed in such a way that the inner wall thereof is pressed in by the elastic jacket of the cable. The cable bend formed by the cross bar is also over the bar ^& is now a full one

under axially directed clamping pressure, pushed over by the 60 length enclosing sleeve 2 until it the relief effect is still favored. with their lower profiled end 2 ° on one

For the sake of completeness, it should also be mentioned that the base 1 is supported by the correspondingly profiled constricted stop that is supported by the German utility model bund l ^g , l ^h. Your inner diameter-1901738 with tube pendant lights, in which the knife is so dimensioned that the cable kink in the cable tray lamp socket is borne by a cable kink located directly on the ceiling 65 part l ^ff from the inner wall of the suspended tube and the power line sleeve2 is still particularly against the Crossbar l ^e cable is not subjected to any tensile loads and is pressed, whereby the strain relief effect in which an expansion of the tube increases the capacity.

At the upper end, the sleeve 2 carries a profiled stop collar 2 ^b and an end wall 2 ^C with an opening 2 ^d for the passage of the cable, which is thereby centered. The upper stop collar 2 ^{b of} the sleeve 2 can simultaneously serve to support a disk-shaped body 4, the circumference of which is supported on the inner wall of the lamp body 3 carrying the screen 5. The sleeve 2 is additionally weighted by the disk 4, that is, its connection to the base 1, 1 ^h , 1 ^{g is} still supported.

Claims (2)

Patent claims: 1. Nipple body for one of the socket clamps of tension relieving attachment of a lamp socket to a power supply cable serving as a pendulum cord, which has a cable channel leading from the inlet opening of the threaded connector to be screwed into the socket to an outlet opening in the upper end face, which is bent in such a way that the cable passed through experiences a strain-relieving bend and holds the nipple body immovably clamped, characterized in that the ^{base (1) carrying the threaded connector (l a} ) has a web (l ^ö ) extending in its longitudinal direction with a cable channel (V has), the passing through in the central region by a she transverse web (l ^e) is interrupted and each by a bottom wall of the web (l ^b) before and behind the transverse web (l ^e) by trespassing hole (l ^c, l ^tf) with a likewise arranged in the bottom wall, to the circumference of the same open, which by the Cross web (l ^e ) caused bending of the cable receiving cable tray part (l ^ff ) is connected, and that it is a longitudinally slidable, the web (1 ^& ) in full length and on a constricted stop collar (l ^g , 1 ^A ) releasably attached sleeve (2) is assigned, the upper end wall (2 ^c ) of which has a central centering opening (2 ^d ) corresponding to the cable diameter for the cable. 2. Electric cord pendant light according to claim 1, characterized in that the inner diameter the sleeve (2) is dimensioned so that the inner wall of the same through the crosspiece (I ") additionally pressurizes the cable bend formed. Considered publications:
German utility model No. 1 601092,
1801280, 1901738;
U.S. Patent No. 2164,527. 1 sheet of drawings 809 558/138 5.68 © Bundesdruckerei Berlin