DE1998170U - ELECTRIC WINDING CAPACITOR. - Google Patents

Description

HA. 163 086 * 3/20/68

Dipl * -Ing. Heinz Ciaessen
Patent attorney
Stuttgart-W
Rötebühlstrasse 70

ISE / Reg. 3655

Case: A.E * J * C »Vanderlekem - L.R.C.Audige 1-1

International Standard Electric Corporation, Hew York Electrical wound capacitor

The innovation concerns one built into a housing electrical ¥ ic! c © lkon4ensafeor kit inserted in the bobbin., connecting foils extending approximately in the direction of the winding axis, which are electrically connected to external connecting members are connected.

A known wound capacitor with paper dielectric consists of the winding body 1, the housing Z _3, the connecting foils 3 of the winding body j the outer connecting elements H _{3 of} the cover plate 5 _{3 of} the pourable layer 6 and the filler neck 7 for filling in a liquid impregnating agent .

The winding body 1 is produced in the V / eise that on a winding mandrel made of insulating material or several paper tapes together with an aluminum tape, another paper tape or tapes and a second aluminum tape are wound up. These paper tapes serve as a dielectric, while the two aluminum strips form the capacitor electrodes. At the rocking

3/15/1968 - Kb / dü -2-

E no.

ISE / Reg. No. 3855 A.E.J.C. Vanderlekem / 1 case: L.R.C.Audige

Title:

"Electrical wound capacitor"

List of terms used

Reference number

1 2 3 k 5 6 7

9 IO 11th

Original language E> / E

winding case

connection foil output terminal closure washer layer of resin tubulation connection Wire elastic washer supporting washer head of the terminal Translation} E / D

Winding body

casing

Connecting foil

external connecting organ

Cover plate

Resin layer

Filler neck

Connecting wire

Spring washer

Support disc

Contact member

199817

ISE / Reg. 3855 -2-

In the process, a connecting foil 3 made of tinned copper and extending in the direction of the winding axis is also wrapped between an aluminum band and an adjacent paper band. As soon as the desired tape lengths have been wound up, the ends of the connection foils 3> which are symmetrical with respect to the winding axis, are bent over at approximately right angles to the stop with the winding face and then electrically connected to the external connection elements ^. This is followed by the insertion of the cover plate 5 made of insulating material into the housing 2 _: which has bushings k for receiving the external connection elements. To seal the cover plate 5, it is cast with a synthetic resin and then the resin layer 6 is cured by a suitable heat treatment. The liquid impregnating agent is then introduced into the housing 2 through the filler neck 7 and this is then closed completely tightly.

In the known cases, the connection foils 3 are connected to the external connection elements h via connecting wires 8 made of mixed copper by means of solder made of an alloy of tin and lead, which also contains pure synthetic resin or flux. It is known that the lifting products present in the solder can adversely affect the electrical properties and operational reliability of the paper capacitors impregnated with a liquid impregnating agent; because these by-products react with the metallic contact parts: * and contaminate.1 the liquid dielectric.

The innovation is based on the assumption that these disadvantages can be eliminated ₃ if a soldered connection between the connection foils and the external connecting elements is avoided,

ISE / Reg. 3855 -3-

si According to the innovation, there is therefore a

Sator of the type mentioned proposed the outstanding Ends of the connection foils for electrical connection with the outer connection members through an outer connection member designed as a pressure contact on the end face To press the rocker body

it cradle

In an advantageous further development of the innovation, the pressure contact is on the side of its contact layer with a one rough surface, in particular sharp-edged or pointed, approaches, provided having contact member. Preferably The contact member can be in the manner of an edge cutter or face milling cutter be trained. In this way there is an improved electrical contact and a good mechanical connection

between the outer connection point and the connection foil

Another advantageous embodiment of the innovation is that the pressure contact under the action of a spring is assigned to the «? Connection foil is pressed on. For this purpose, a spring washer incorporated between the winding body xma of the Selalüseböaeii can be used, which presses the winding body and the connecting foils against the outer Änsehluö-organs after the housing is closed. This also brings about an improvement in the electrical contact between the connection foils and the external connection elements.

For a better understanding of the innovation, this is based on an exemplary embodiment shown in the drawing described in more detail.

Show it:

Figure 1 shows a known electrical winding capacitor

sator as described above, and

Figure 2 shows an electrical wound capacitor

according to the innovation in perspective ₃ partially sectioned view *

The electrical capacitor of Figure 2 is in a metallic Go £ "se 2 built in by first adding a metallic Spring washer 9, then a support washer 10 made of electrically insulating material and then the winding body 1 with the Connection foils 3 made of tinned copper is used. The external connection organs * i made of tinned brass are in corresponding Feedthroughs of the cover plate 5 are used in such a way that they only have their contact members 11 against the connecting foils 3 of the bobbin are directed »As already mentioned, can the surface of the contact members 11 be roughened, in particular knurled or toothed, in order to have a good mechanical and to establish an electrical connection with the connecting foils 3. The cover plate 5 wira into the housing 2 under strong pressure inserted so that the winding body 1 located between the spring washer 9 and the contact elements 11 against the contact elements is pressed. Because in this way the contact members 11 are strongly pressed against the connecting foils 3, the winding body part located under the contact members can easy to insert be pressed. But this will reduce the electrical Properties of the capacitor are not affected because the aluminum strips are narrower than the paper strips and are therefore not deformed.

Finally, the housing 2 is covered with a hardenable resin layer b closed, then a liquid impregnating agent is poured into the housing through the filler neck 7 and then the filling opening is tightly closed.

-5-

ISE / Reg. 3855 -5-

The innovation is not based on what is shown in the drawing Embodiment limited. So the external connection organs * i can be used not only as plug connections, but can also be designed as cable lugs, which can then only be attached to the contact members 11 by means of rivets are.

Investments:

β Claims to protection

Sheet drawing (2 pig.)

Directory of terms used

Claims (1)

hA. 163 086 * 20.3.8 Protection claims 1.) In a housing built-in electrical wound capacitor with inlaid in the winding body., Approximately in the direction of the winding axis extending connecting foils, which are electrically connected to external connecting elements; thereby gekennzsich η et _a that the protruding ends of the connecting foils (3) for electrical Connection with the external connection elements (* Π are pressed against the end face of the winding body (1) by an external connection element each designed as a pressure contact. 2,) wound capacitor according to claim 1, characterized in that that the pressure contact under the action of a spring on the associated connecting foil (3) is pressed. 3.) wound capacitor according to claim 2, characterized in that between the winding body (1) and the A spring washer (9) is incorporated into the bottom of the housing (2). H.) wound capacitor according to one or more of claims 1 to 3 j, characterized in that the '"' Pressure contact on the side of its contact with a contact with a rough surface, in particular sharp-edged or pointed approaches gxjLöu ν, J.-L / vcracucu Ιου. I3E / Reg. 3855 -2- 5.) wickeD capacitor according to claim Ά _3, characterized in that the contact member (II) is designed in the manner of a Rändis or otirnfräsers. ',) Wound capacitor according to claim ² J or 5 _S thereby
characterized ₃ that the outer connecting members (4) in the form of cable lugs by means of rivets on the contact members (11) are attached. 3/15/1968 - Kb / du