EP0600059A1 - Spulenkörper. - Google Patents
Spulenkörper.Info
- Publication number
- EP0600059A1 EP0600059A1 EP93912606A EP93912606A EP0600059A1 EP 0600059 A1 EP0600059 A1 EP 0600059A1 EP 93912606 A EP93912606 A EP 93912606A EP 93912606 A EP93912606 A EP 93912606A EP 0600059 A1 EP0600059 A1 EP 0600059A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lower flange
- wire guide
- webs
- guide slot
- underside
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
Definitions
- the invention relates to a coil former, in particular for RM cores.
- Coil formers which have a hollow cylinder which, together with an upper and a lower flange, forms a coil winding space.
- On the lower flange are essentially radially outwardly pointing webs which have a greater thickness than the lower flange. The webs hold protruding pins on their underside.
- a wire guide slot which is open on one side and radially outward, is arranged between two webs and ends with its closed end in the region of the lower flange near the outside of the hollow cylinder.
- the wire guide slots can be strictly radially directed or also somewhat obliquely with respect to the radial direction.
- Such coil formers are known for RM cores from DIN 41981. They are made from a thermosetting phenolic resin.
- the copper wires of the coil windings have been provided with polyimide lacquers to increase the insulation.
- the thermal load on the coil body has become significantly higher. This leads to a high failure rate of the coil formers. Attempts to remedy this have so far been unsuccessful.
- a coil former in particular a coil former for RM cores, has the following features according to the invention:
- a hollow cylinder forms a coil winding space together with an upper and a lower flange.
- the wire guide slots are closed by a small piece by a filler, the top of which is stepped below the top of the lower flange.
- the webs are connected by a bridge crossing the wire guide slot, which extends over the underside of the filler web and is connected to it.
- the bobbin is made of a thermosetting unsaturated polyester, which contains processability-promoting additives.
- the coil former according to the invention therefore no longer consists of a phenolic resin but of an unsaturated polyester.
- Unsaturated polyesters of this type can only be used for parts that are so difficult to remove from the mold, such as RM bobbins, in the injection molding process if you have been given customary additives that favor processability, such as conditioners, release agents, etc.
- a bobbin produced with such an unsaturated polyester has a temperature resistance which allows the soldering to be carried out, as is required for wires coated with polyimide lacquers, without the dimensional accuracy of the bobbin being impaired.
- a bobbin made from an unsaturated polyester has the disadvantage that its strength is considerably reduced. The flange breaking strength in the area of the webs is only about half as large as that when using phenolic resins.
- the present invention thus provides a coil former which is practically equivalent to the phenolic resin coil former, but has a higher temperature resistance, so that the soldering required for wires coated with polyimide lacquers is carried out without dimensional problems for the coil former can.
- the filler web has a surface which slopes away radially to the outside.
- the bridge On its radially inner long side, the bridge is provided with an oblique edge, which merges into the web with a transition radius.
- the inclination of the edge is preferably about 7 °. This ensures good demoldability of the coil former with high stability, which - in contrast to the previous coil former - does not show any shrinkage, but only shrinks in the shape itself. Without the formation of the bevels, an undercut could form in the shrinkage in the mold, which would lead to demolding problems.
- the bridge provided according to the invention is particularly advantageous for bobbins for RM cores of sizes> _ 4 and ⁇ . 8. Bridges on the underside have not previously been provided for such bobbins.
- Figure 1 - a vertical section through two wire guide slots through a bobbin
- FIG. 3 - a view of the coil body according to Figure 1 from below
- FIG. 1 shows a coil former for RM cores, which has a hollow cylinder 1 which is delimited on its upper side by an upper flange 2 and on its underside by a lower flange 3, whereby an annular winding space 4 is formed.
- connection pins 7 are usually injected into the webs 5, 6 during the manufacture of the coil former.
- FIG. 2 The top view of the flange 3 and the webs 5, 6 according to FIG. 2, which results from the section along the line II-II, shows that between the webs 5, 6 a radially outwardly open wire guide slot 8 is formed, which ends with its closed end 9 in the region of the lower flange 3 near the outside of the hollow cylinder 1. It can also be seen that the end 9 of the wire guide slot 8 is closed over a small distance by a filler web 10.
- This filler web 10 has - like FIG. 1
- REPLACEMENT LEAF reveals - a sloping radially outward top side.
- FIG. 1 illustrates that the shape of the webs 5, 6 corresponds to the expediencies for an automatic winding of the bobbin and is known per se, so that a further explanation can be omitted here.
- Figure 2 illustrates that the wire guide slots 8 are not strictly radially aligned, but are slightly inclined relative to the radial direction. This orientation of the wire guide slots 8 is also known, for example by DIN 41981.
- the view of the bobbin shown in FIG. 3 from below illustrates the position of the section line I-I, along which the vertical section according to FIG. 1 has been made.
- Figure 3 also shows that the webs 5, 6 are thickened relative to the flange 3 and have known chamfered chambers 11, 12 for guiding the wire ends to the connecting pins 7.
- the webs 5, 6 are connected on the underside to a bridge 13 crossing the wire guide slot 8.
- the width of this bridge 13 is small and corresponds to only a fraction of the width of the lower flange 3.
- the radially inner longitudinal edge 14 of the bridge 13 is provided with a bevel of approximately 7 °, which passes into the material of the flange 3 with a transition radius 15.
- the coil former shown consists of a thermosetting unsaturated polyester which has been modified by the addition of release agents and conditioners in such a way that it can be processed reliably using injection molding technology.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
- Winding Filamentary Materials (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Organic Insulating Materials (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4220287A DE4220287C2 (de) | 1992-06-20 | 1992-06-20 | Spulenkörper aus duroplastischem ungesättigten Polyester |
DE4220287 | 1992-06-20 | ||
PCT/DE1993/000539 WO1994000857A1 (de) | 1992-06-20 | 1993-06-18 | Spulenkörper |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0600059A1 true EP0600059A1 (de) | 1994-06-08 |
EP0600059B1 EP0600059B1 (de) | 1996-08-21 |
Family
ID=6461489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93912606A Expired - Lifetime EP0600059B1 (de) | 1992-06-20 | 1993-06-18 | Spulenkörper |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0600059B1 (de) |
AT (1) | ATE141711T1 (de) |
CA (1) | CA2114948A1 (de) |
DE (3) | DE9218610U1 (de) |
WO (1) | WO1994000857A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4418246C2 (de) * | 1994-05-25 | 1997-12-18 | Hohenloher Kunststofftechnik G | Spulenkörper und damit aufgebaute elektrische Spule |
US5774036A (en) * | 1995-06-30 | 1998-06-30 | Siemens Electric Limited | Bobbin-mounted solenoid coil and method of making |
DE19818040C1 (de) * | 1998-04-22 | 1999-11-04 | Siemens Matsushita Components | SMD-Spulenkörper mit Flachdrahtanschlüssen |
DE10114182C2 (de) * | 2001-03-23 | 2003-04-03 | Epcos Ag | Induktives Bauelement mit Drahtführungsschlitzen |
WO2008061998A1 (de) * | 2006-11-22 | 2008-05-29 | Osram Gesellschaft mit beschränkter Haftung | Induktionsspule und verfahren zum herstellen einer induktionsspule |
CN102910486B (zh) | 2011-08-03 | 2015-01-07 | 台达电子企业管理(上海)有限公司 | 绕线器及缠绕电线于绕线器的方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3004747C2 (de) * | 1980-02-08 | 1982-05-06 | Siemens AG, 1000 Berlin und 8000 München | Spulenkörper für elektrische Spulen |
DE3433700A1 (de) * | 1984-09-13 | 1986-03-20 | Siemens AG, 1000 Berlin und 8000 München | Wickelkoerper fuer einen elektrischen uebertrager |
-
1992
- 1992-06-20 DE DE9218610U patent/DE9218610U1/de not_active Expired - Lifetime
- 1992-06-20 DE DE4220287A patent/DE4220287C2/de not_active Expired - Lifetime
-
1993
- 1993-06-18 WO PCT/DE1993/000539 patent/WO1994000857A1/de active IP Right Grant
- 1993-06-18 DE DE59303494T patent/DE59303494D1/de not_active Expired - Fee Related
- 1993-06-18 CA CA002114948A patent/CA2114948A1/en not_active Abandoned
- 1993-06-18 EP EP93912606A patent/EP0600059B1/de not_active Expired - Lifetime
- 1993-06-18 AT AT93912606T patent/ATE141711T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9400857A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE141711T1 (de) | 1996-09-15 |
EP0600059B1 (de) | 1996-08-21 |
DE59303494D1 (de) | 1996-09-26 |
DE4220287C2 (de) | 1994-11-24 |
CA2114948A1 (en) | 1993-12-21 |
DE4220287A1 (de) | 1993-12-23 |
DE9218610U1 (de) | 1994-10-06 |
WO1994000857A1 (de) | 1994-01-06 |
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