DE7140600U - Electric line coupling - Google Patents

Description

Dr.-Ing. Herbert Mo.sQt'-. ···: '■:''":. ₇₁ , /

Patent attorney '"' * I '? Fs \

76 Karlsruhe, Nowackanlage 15

Applicant: Rudolf Heyde, 7513 Stutensee-Staffort Electric line coupling J ^>

The invention relates to an endlessly rotatable electric Line coupling in which in dta a housing part «ylinder-

Sehleifer-like shaped stakes of the flatter housing are partly in contact with the connecting lines of the two Parts of the line coupling »with the contact surfaces, bsw. ait the contact springs are in connection.

For electrical devices and tools »which are to be used to prevent twisting of the mains cable as well as wherever electrical lines have to be passed through joints of apparatus or machines and are thus exposed to torsional stresses, this is the case Use of rotatable, especially infinitely rotatable, line couplings required.

In a previously known embodiment of such an endlessly rotatable line coupling, the wires of one end of the line are connected with cylindrical contact surfaces ₍ on which are parallel to the axis of symmetry of the coupling

lying slide springs, which with the veins of the other Leitangestücks are connected, rest resiliently. Such a line coupling has a relative large tree needs.

The state of the art also includes a contact joint in which a contact pin against double-curved contact springs is applied, which in addition to the rotational mobility a certain Enable tilting position. The structure of such a contact hinge with a ball-bearing contact pin and contact springs arranged in rows and separated by washers is too complicated for simple applications and correspondingly expensive.

Also known is a rotary joint in which between the relatively rotatable parts made of insulating material several mutually insulated resilient, metallic roller bearings are coaxially arranged, wherein a race of each roller bearing is formed by a helical spring. This previously known design is also bulky and not as Mass-produced items can be produced inexpensively.

Botation-symmetrical disc contacts are also provided in advance. These consist of mutually rotatable contact disks with a low contact resistance of the Rotation point is achieved by interposed, spring-elastic contact lamellas. Disc contacts are unsuitable for multi-pole arrangements because of the considerable amount of space they require.

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7140600 Oi, 12.75

Finally, electrical line couplings are also known in which currentless bearings and those used for power transmission Bearings alternate one behind the other. The structure of this line coupling is complicated in terms of production and expensive.

The invention is based on the task of creating an endlessly rotating electrical line coupling, which avoids the disadvantages of the previously known line couplings and can be manufactured inexpensively as a mass-produced item with small spatial dimensions. The characteristic the invention is to be seen in the fact that the cylindrical contact surfaces on a plug-shaped contact piece are formed; and that the contact springs are U-shaped bent flat spring contacts, which are on the cylindrical Contact surfaces rest resiliently in two contact lines.

By the features of the invention, an endlessly rotating, single or multi-pole * line coupling is created using VOB simple devices that significant electrical power transfer properly. It is essential that the flat spring contacts, which are bent in a U-shape and made of electrically conductive material, have a double linear contact surface per cylinder contact surface, and that the system is largely insensitive to manufacturing tolerances.

Such an endlessly rotatable, electrical line coupling enables a torsion-proof, pull and thrust-relieved

7140600 04.1175

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Loaded arrangement of the connection lines of a power cable, in which the connection lines are brought directly up to the contacts and are fastened within the housing parts of the coupling. This means that additional connections and fastenings can be avoided when installing the coupling in devices or tools , and the coupling can be accommodated easily even if the installation space is limited. The outer shape of the coupling is determined by the contact surface !! advantageously designed in such a way that installation that can be twisted and shifted, even ohae ssaät * - borrowed fasteners is achieved. Further advantageous designs emerge from the claims. In the drawing, an exemplary embodiment of the invention is shown in the form of a two-pole, electrical line coupling for sets connection lines; show it?

FIG. 1 shows a longitudinal view of the electrical line coupling;

Figure 2 is a longitudinal view of the electrical line coupler Location;

Coupling according to Figure 1 rotated by 90 °

Figure 3 shows a long section of the electrical line coupling mach Figures 1 and 2 in an enlarged Scale;

FIG. 4 is an isometric section showing the connection between the pin and buckets represents Flaohfederkomtakt.

7140600 12/04/75

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According to Figure 1 and 2, the electrical line coupling consists of two housing parts 1, 2, which have one on one Flange part of a housing part 1 pressed-on fastening ring 3 are rotatably connected to one another. The attachment this fastening ring 3 can optionally also by screwing, pinning, flanging or welding take place.

In the diagram of FIG. 3 , one recognizes a stop part 4 * which is pressed into the housing part 2 and which has sparomgem ram the passage of connection lines 15 »16. A contact pin 5 is mounted in the stop part 4 and is connected in an electrically conductive manner to the one connection line 16 in the immediate vicinity of the stop part 4. An insulating tube 6 and above it a Kentakt tube 7 are pushed onto the Kentakt pin 5. On the insulating tube 6 there are former cutting disks 13 * 14 one behind the other, the cutting disk 13 being held between the two housing parts 1 and 2 and provided with a bucket recess for the connection line. The Aaeehlußleitumg 15 is directly behind the beaded edge 20 of the contact tube 7 with this electrically conductive. The separating disk 14 prevents the connection line 15 from getting caught in the sliding contacts.

The sliding contacts each consist of two flat spring contacts 9-10 with an oval shape and unequal leg length, which are separated from one another by an insulating intermediate piece 8. The longer legs of the flat spring bars are connected in an electrically conductive manner with two connecting lines 11-12. They spread flat spring contacts 9.10

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the cylindrical contact surfaces, which are formed on the one hand on the contact pin b and on the other hand on the contact tube 7 and thereby produce two line contact surfaces which ensure reliable contact with low contact resistance (see FIG. 4). The two flat spring contacts 9, 10 bent in a U-shape are inserted in the housing part 1 so that they cannot rotate.

In the housing part 2, a power cable 17 with an over-pushed sleeve 18 is inserted and held by a clip ring 19 against which the stop part 4 rests. In the area of contact with the slider ring 19, the inside of the blower part 2 is shaped in such a way that twisting and sliding off of the clamping ring 19 and thus of the set cable * is prevented.

The contact surfaces 21, 22 of the housing part 1 shown in FIGS. 1 and 2 and the other contact surfaces 23, 24 of the fastening ring 3 are used for rotation and sliding after the line coupling has been installed in the corresponding devices or tools.

During assembly, the male contact piece consisting of dom contact pin 5, dom insulating tube 6 and contact tube 7 is pushed into the flat spring contacts 9, 10 separated by the intermediate piece 8 in such a way that the free bathing dos contact pins 5 is received in a recess dos housing part 1 . Then the housing part 2 is rotatably connected to the dome housing part 1 by pressing and Siehera dos fastening ring 5 on the flange edge of the housing part 1.

7140600 04.t2.75

Claims (14)

Expectations 1. Endlessly rotating electrical line coupling, in which in the one housing part cylindrical contact surfaces coaxially are arranged against the con « Cycle springs are in contact with the other part of the housing, with the connecting lines of the two files of the line coupling old the contact surfaces bsw. ait the Kentakt feathers are in connection, characterized in that, that the sylinderforaigea contact surfaces are formed on a »plug-shaped contact piece (5,6,7), and that the Contact spring * U-shaped bent flat spring contacts (9,10) are "which"? £ dea "ylinder-shaped contact surfaces are spring-resiliently supported in two contact lines. 2. Line coupling according to claim 1, d a d u r c b ge « It is known that the U-shaped flat spring contacts (9, 10) have different leg lengths, and that the longer leg is in each case directly connected to an electrical connection line (11, 12). 3. Line coupling according to claim 1 or 2, characterized characterized in that the two ßehäuseteile (1,2) aa dea facing end faces have flange-like sockets which are secured by a fastening ring «Usaaaenhalten s: ind. 4. Line coupling according to spoke 3, characterized in that the one housing part (1) 7140600 12/04/75 can be connected to the fastening ring (3). 5. Line coupling according to one of claims 1 to 4, characterized in that the connecting lines within the one housing part (^) by a Clamping ring (19) are held, which lie connecting lines (15,16) with respect to the housing part (2) as a rotation lock as defined as tension and shear relief. 6. Line coupling according to claim 5, characterized in ₉ that Aer clamping ring (19) squeeze »is deformable. 7. Line coupling according to claim 5 or 6, characterized characterized in that the EL enuring (19) through a shapely! Iissige design of the Ianenwandflache of the housing part (2) gagen twisting and falling out secured IU. b. Line coupling according to one of Claims 1 to 7 *, characterized in that the connecting lines are sprayed at the entrance of the housing part (1,2). 9. line coupling according to one of claims 1 to 8, characterized characterized «that the two U-shaped bent, riach spring contacts (9» 10) through a can be plugged onto the plug-in contact piece (5,6,7) Intermediate piece (8) are separated. 7140600 12/04/75 10. Line coupling according to claim 9, characterized in that that the plug-shaped Kontaktsttiok 2U.5 siS £ 2L iszisrss contact pin (5) consists of »aa £ dss with the interposition of at least one insulating tube (6) at least one contact tube (7) is arranged coaxially. 11. Line coupling according to claim 10 «characterized in that that the free end of the contact pin (5) in a recess of the other housing part (1) is rotatably mounted. 12. Line coupling according to claim 10 or 11, characterized in that the contact pin (5) is held on one side in a stop part (4), which has recesses for the passage of the connecting lines (15 * 16) and rests against the clamping ring (19). 13. Line coupling according to one of claims 3 to 12, characterized in that the housing parts (1,2) and the fastening ring (3) optionally contact surfaces (21,22; 23,24) for the positional orientation of these parts in the installation. 14. Line coupling according to claim 12, characterized in that in the region of the stop part (4) held end of the contact pin (5) separating disks (13, 14) between the U-shaped bent flat spring - contacts (9,10) and the attachment points of the connecting cables (15,16) lie on the contact pin (5) or on the contact tube (7). 7140600 Ok 1175