EP0482694B1 - Coil former comprising right-angled terminal pins - Google Patents
Coil former comprising right-angled terminal pins Download PDFInfo
- Publication number
- EP0482694B1 EP0482694B1 EP91202663A EP91202663A EP0482694B1 EP 0482694 B1 EP0482694 B1 EP 0482694B1 EP 91202663 A EP91202663 A EP 91202663A EP 91202663 A EP91202663 A EP 91202663A EP 0482694 B1 EP0482694 B1 EP 0482694B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal pin
- coil former
- section
- pin
- chamber
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/043—Arrangements of electric connections to coils, e.g. leads having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
Definitions
- the invention relates to a coil former, comprising two flanges which are interconnected by way of a tubular central portion, at least one of said flanges being provided with a number of recesses, a terminal pin made of an electrically conductive wire being inserted into at last one of said recesses, which terminal pin comprises a first portion and a second portion comprising a locally widened portion, which first and second portions extend perpendicularly to one another, each of said recesses being shaped as a right-angled slot comprising a first section accommodating the first portion of the terminal pin and a second section accommodating the second portion of the terminal pin, at least a part of the second section of each slot having a width corresponding to the transverse dimension of the terminal pin.
- a coil former of this kind is known from UK Patent Application GB 2 129 772A.
- a coil former is described which comprises terminal pins made of wire that can be automatically mounted and which, because of their construction, are firmly secured in the coil former so that they are locked against withdrawal. To this end, the terminal pins are distorted.
- a drawback thereof consists in that the distortion of the terminal pins and the mounting of these pins in the coil former is rather complex so that the procedure is rather time-consuming.
- FR Patent Application FR 2 349 198 a coil former is described in which the terminal pins are made of sheet material. In at least one of the branches of the pin, an elastic tongue is punched out to secure the pin in the coil former.
- the coil former in accordance with the invention is characterized in that the locally widened portion extends perpendicularly to a plane through the first and the second portion of the terminal pin, in a wall of the second section of each slot there being recessed a chamber whose dimensions are such that the widened portion fits therein, the terminal pin being locked in the chamber by cooperation between the widened portion and the chamber.
- the chamber can be recessed in the coil former during the moulding of the coil former and large numbers of terminal pins can be manufactured separately from the coil former. Thus, the terminal pins can subsequently be quickly and simply mounted in the coil former.
- An embodiment of the coil former in accordance with the invention is characterized in that the locally widened portion is a kink formed in the pin.
- An alternative embodiment of the coil former in accordance with the invention is characterized in that the locally widened portion is a distortion obtained by squeezing the pin.
- the latter two embodiments both offer a feasible alternative as regards the locally widened portion of the terminal pin.
- Figure 1 is a bottom view of a first embodiment of a coil former in accordance with the invention.
- Figure 1a is a detailed sectional view of a part of a flange of the coil former in accordance with the invention provided with a right-angled slot.
- Figure 2 is a side elevation of the coil former shown in figure 1.
- Figure 3 is a front view of the coil former shown in figure 1.
- Figure 4a is a detailed sectional view of a part of a flange of the coil former in accordance with the invention in which a distorted terminal pin is secured.
- Figure 4b is a partial, detailed bottom view of a flange of the coil former in accordance with the invention.
- Figure 4c is a partial detailed side elevation of a flange of the coil former in accordance with the invention.
- Figures 5a, 5b and 5c are views corresponding to the figures 4a, 4b and 4c for a different shape of the cross section of the terminal pin.
- Figures 6a, 6b and 6c are the same views as the figures 4a, 4b and 4c for another distortion of the terminal pin.
- Figure 7 is a front view of a second embodiment of the coil former shown in figure 1.
- the coil former 1 shown in figure 1 comprises two flanges 3 which are interconnected via a tubular central portion 5.
- the coil former 1 may consist of, for example an injection moulded electrically insulating material.
- At least one of the flanges 3 is provided with a number of recesses 7 which are shaped as a right-angled slot as shown in figure 1a.
- a right-angled slot is to be understood to mean herein a slot comprising two side walls 6 and a bottom 8 consisting of a first portion 10 and a second portion 12, which portions extend perpendicularly to one another.
- the first portion 10 extends horizontally and bounds the first section 14, the second portion 12 extending vertically and bounding the second section 16.
- the sections 14, 16 are open at the exterior of the flange 3.
- Electrically conductive terminal pins 9 made of, for example metal wire are arranged in at least a number of the recesses 7.
- FIG. 2 is a side elevation of the coil former 1.
- the coil former 1 comprises a cavity 11 in which a core of a soft-magnetic material (not shown), for example ferrite, can be inserted.
- a soft-magnetic material for example ferrite
- the terminal pins 9 comprise a first portion 13 and a second portion 15 which extend perpendicularly to one another.
- the first portion 13 can be used, for example for soldering the coil former 1 onto a printed circuit board (PCB), the second portion 15 being used to attach the transformer windings (not shown).
- PCB printed circuit board
- the second portion 15 of the terminal pin 9 is visible and in figure 2 the first portion 13 is visible.
- Figure 3 is a front view of a coil former 1 as shown in figure 1. A part of the coil former 1 is shown in a sectional view. The direction in which the terminal pins 9 are inserted into the flange 3 is denoted by the arrow 17. The first portion 13 of the terminal pins 9 is arranged in the first section 14 of the recesses 7, the second portion 15 being arranged in the second section 16. The width of the slot 7 corresponds to the transverse dimension of the wire of the terminal pins 9.
- Figure 4a is a detailed representation of the portion of the flange 3 in which the terminal pin 9 is secured.
- Figure 4b is a sectional view taken along the line IVb-IVb in figure 4a.
- a chamber 19 is recessed in a side wall 6 of the second section 16 of the recess 7.
- the second portion 15 of the terminal pin 9 comprises a locally widened portion 21 in the form of a kink.
- the kink 21 extends in a direction approximately perpendicularly to the plane formed by the first portion 13 and the second portion 15 of the terminal pin 9.
- Figure 4c is a sectional view taken along the line IVc-IVc in figure 4a.
- the kink 21 in the terminal pin 9 fits in the recessed chamber 19. Removal of the terminal pin 9 from the flange 3 in the direction denoted by the arrow 23 is prevented by cooperation between the kink 21 and the chamber 19. This is because, when the transformer windings (not shown) are attached, a force arises in the direction 23, which force is liable to pull the terminal pin 9 out of the flange 3. Moreover, rotation of the terminal pin 9 in the slot 7 in the direction denoted by the arrow 25 is also prevented. The soldering section 13, however, is not exposed to forces which could pull out the terminal pin.
- the terminal pin 9 may have, for example a circular cross section as assumed for the foregoing Figures; however, the terminal pin 9 may also have a square cross section as shown in the figures 5a, 5b and 5c.
- Figures 6a, 6b and 6c are views similar to the figures 4a, 4b and 4c, be it that the locally widened portion 21 in these embodiments is achieved by local squeezing of the terminal pin 9.
- the widened portion 21 is again situated in a direction approximately perpendicularly to the plane formed by the first portion 13 and the second portion 15 of the terminal pin 9.
- Figure 6b is a sectional view taken along the line VIb-VIb in figure 6a.
- the slot 7 is provided with a recessed chamber 20 whose shape deviates from that of the chamber 19 in figure 4b. This is because the chamber 20 is symmetrical with respect to the axis 8 of the slot 7.
- the figures 6a, 6b and 6c show an embodiment comprising terminal pins 9 having a circular cross section. However, the terminal pin 9 may also have, for example a square cross section (not shown) as in the figures 5a, 5b and 5c.
- Figure 7 shows a second embodiment of the coil former 1.
- the terminal pin 9 is inserted into the flange 3 from the side of the central portion 5 as denoted by the arrow 27.
- the shape of the flange 3 automatically locks the terminal pin 9 against pulling out of the flange 3 in the direction 23.
- pulling out of the terminal pin 9 in this direction is prevented by the widened portion 21 which is in this case represented by a kink.
- An additional advantage of the embodiments shown in the figures 3 and 7 consists in the presence of a partition 29 which automatically results from the shape of the flange 3.
- the partition 29 constitutes a shield between the connection portion 15 of the terminal pin 9 and the ferrite core.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL9002320 | 1990-10-24 | ||
NL9002320A NL9002320A (nl) | 1990-10-24 | 1990-10-24 | Spoelkoker met haakse aansluitpennen. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0482694A1 EP0482694A1 (en) | 1992-04-29 |
EP0482694B1 true EP0482694B1 (en) | 1994-08-10 |
Family
ID=19857872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91202663A Expired - Lifetime EP0482694B1 (en) | 1990-10-24 | 1991-10-15 | Coil former comprising right-angled terminal pins |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0482694B1 (ja) |
JP (1) | JPH04263405A (ja) |
DE (1) | DE69103372T2 (ja) |
NL (1) | NL9002320A (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19512343C1 (de) * | 1995-04-01 | 1996-01-25 | Hohenloher Spulenkoerper | Spulenkörper mit Anschlußstiften hoher Auszugsfestigkeit sowie Verfahren zur Herstellung der Stifte |
US5999079A (en) * | 1996-09-30 | 1999-12-07 | Siemens Aktiengesellschaft | Magnet coil with radial terminal pins and the method for manufacturing the coil |
DE19741699A1 (de) * | 1997-09-22 | 1999-04-01 | Siemens Matsushita Components | E-Kernspulenkörper |
KR20050053764A (ko) * | 2002-10-16 | 2005-06-08 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 낮은 구조물 높이를 위한 리츠 와이어 고정 |
CN103500624A (zh) * | 2008-06-10 | 2014-01-08 | 浙江三花股份有限公司 | 电磁线圈 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2129772A (en) * | 1982-11-08 | 1984-05-23 | Plessey Co Plc | A transformer bobbin |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2617466A1 (de) * | 1976-04-21 | 1977-11-03 | Siemens Ag | Spulenkoerper |
FR2420284A7 (fr) * | 1978-03-17 | 1979-10-12 | Weiner Norbert | Carcasse de bobine electrique |
-
1990
- 1990-10-24 NL NL9002320A patent/NL9002320A/nl not_active Application Discontinuation
-
1991
- 1991-10-15 DE DE69103372T patent/DE69103372T2/de not_active Expired - Fee Related
- 1991-10-15 EP EP91202663A patent/EP0482694B1/en not_active Expired - Lifetime
- 1991-10-22 JP JP27391791A patent/JPH04263405A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2129772A (en) * | 1982-11-08 | 1984-05-23 | Plessey Co Plc | A transformer bobbin |
Also Published As
Publication number | Publication date |
---|---|
JPH04263405A (ja) | 1992-09-18 |
DE69103372D1 (de) | 1994-09-15 |
DE69103372T2 (de) | 1995-03-30 |
EP0482694A1 (en) | 1992-04-29 |
NL9002320A (nl) | 1992-05-18 |
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