EP2947667A1 - Bobine d'arrêt et procédé de production d'une bobine d'arrêt - Google Patents

Bobine d'arrêt et procédé de production d'une bobine d'arrêt Download PDF

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Publication number
EP2947667A1
EP2947667A1 EP15001187.2A EP15001187A EP2947667A1 EP 2947667 A1 EP2947667 A1 EP 2947667A1 EP 15001187 A EP15001187 A EP 15001187A EP 2947667 A1 EP2947667 A1 EP 2947667A1
Authority
EP
European Patent Office
Prior art keywords
wire
holding
holding means
suppression choke
bobbin
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
Application number
EP15001187.2A
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German (de)
English (en)
Other versions
EP2947667B1 (fr
Inventor
Erwin Büchele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erwin Buechele GmbH and Co KG
Original Assignee
Erwin Buechele GmbH and Co KG
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Erwin Buechele GmbH and Co KG filed Critical Erwin Buechele GmbH and Co KG
Publication of EP2947667A1 publication Critical patent/EP2947667A1/fr
Application granted granted Critical
Publication of EP2947667B1 publication Critical patent/EP2947667B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/045—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
    • 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
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads

Definitions

  • the invention relates to a suppression choke with a wire coil, which has a helical coil bobbin extending along a winding axis and connecting wires protruding endwise from the wire bobbin and transverse to the winding axis, and with a holding means coupled to the wire bobbin, which extends along the wire bobbin. Furthermore, the invention relates to a method for producing a suppression choke.
  • a rod core choke with a cylindrical core wherein on the core a winding is applied, which has a substantially cylindrical surface and wherein in the region of the winding on the throttle an elastic clip of a magnetic fields neutral plastic is placed with high thermal stability , which has a substantially U-shaped cross-section and is clamped on the throttle, wherein at least the center leg of the U on its outer side has a flat surface for attacking the vacuum pipette of a placement machine.
  • the object of the invention is to provide a suppression choke and a method for producing a suppression choke, which improves the processability of the Ensuring suppression choke in an automatic processing process (pick-and-place processing).
  • the holding means comprises a holding portion for fixing a connecting wire.
  • the suppression choke according to the invention can advantageously be placed on a printed circuit board, which is also referred to as a printed circuit or board.
  • the suppression choke is designed as a so-called SMD component (surface-mounted device), in which a determination and electrical contact, in particular exclusively, is provided on the circuit board surface.
  • SMD component surface-mounted device
  • an attachment of the suppression choke on contact surfaces of the printed circuit board with a solder paste applied before mounting the suppression choke, which is heated so far after mounting the suppression choke, in particular in a reflow soldering, that form a solid and electrically conductive connection between the Contact surfaces and the connecting wires forms.
  • the connecting wires in each case at least almost flat rest on a flat, electrically conductive portion of the circuit board, so that in the subsequent soldering the desired solder joint with the contact surface is formed.
  • the flat support of the connecting wire on the connecting surface of the printed circuit board is ensured according to the invention by means of the holding section, which is designed for a predeterminable positioning of the respective connecting wire.
  • populating the suppression choke may be provided in a feedthrough method in which at least one of the leads is passed through a bore of a printed circuit board to perform soldering from the back side of the circuit board, but this method is less relevant in practice. Also for this method of installation, the alignment of the respective connecting wire is ensured by the associated holding section.
  • the holding means in each case has a holding section at mutually opposite end regions, wherein each of the holding sections is designed to fix the respective connecting wire.
  • each of the holding sections is designed to fix the respective connecting wire.
  • the two connecting wires are arranged in a common plane, which in turn is aligned parallel to the winding axis.
  • the holding means on an outer surface has a, preferably flat, gripping surface, which is designed for temporary coupling of a gripping means.
  • the gripping means is a suction gripper, which presupposes the presence of a flat gripping surface for proper function.
  • the gripping means may also be designed as a finger gripper, for example if several heavy components can be mounted on the printed circuit board, to which the suppression choke can also be counted. In this case, it is not necessary that the gripping surface is flat, but rather a suitable adaptation of the geometry of the gripping surface to the requirements of the finger gripper can be made.
  • the holding means comprises a plate-shaped base body, whose longest edge extends along the winding axis and that the holding portions protrude transversely to the longest edge of the base body. Due to the plate-shaped, in particular cuboid configuration of the base body is achieved that the wire coil from the holding means away from the holding portions is only affected, so that a heat transfer from the suppression choke is affected in an environment as little as possible.
  • provision may be made for reinforcing webs each protruding at right angles from the plate-shaped base body between the holding sections along the longest edges, but which have a small height relative to the coil diameter of the wire coil and thus do not impair heat radiation of the interference suppression choke. nevertheless ensure stabilization of the plate-shaped body.
  • At least one holding portion U-shaped for a positive reception of a portion of the wire bobbin is formed.
  • a reliable fixing of the holding means on the wire bobbin body can be achieved.
  • a recess in the interior of the at least substantially U-shaped holding portion is adapted to the preferably cylindrically designed outer geometry of the wire bobbin and may comprise the wire bobbin at least partially positively. Accordingly, the form-fitting reception of the wire bobbin is ensured by the U-shaped holding portion.
  • the holding portion has a recess for a positive reception of the connecting wire.
  • a reliable fixing of the connecting wire is ensured on the holding section.
  • the recess in the holding section is adapted to a cross section of the connecting wire such that it tapers again in the direction of an end face of the holding section, so that the connecting wire is received in the holding section in a form-fitting manner after overcoming the taper.
  • a cross section of the recess may preferably be formed according to the cross section of the connecting wire, but this is not a necessary condition for the desired positive reception of the connecting wire in the holding section.
  • a spool core is received in a space limited by the wire bobbin coil space and the holding means forms a stop for an axial fixing of the coil core along the winding axis.
  • the coil core serves to improve the magnetic efficiency of the suppression choke and is usually made of a ferrite material.
  • the length of the coil core along the winding axis preferably corresponds at least almost completely to the length of the wire coil along the winding axis.
  • a stop for an axial fixing of the bobbin is provided according to the invention on the holding means.
  • two oppositely disposed U-legs of the U-shaped holding means may be connected to a wall portion which forms the required stop for the ferrite core.
  • connection wires are arranged in a common connection plane aligned parallel to the winding axis and that the recesses in the holding sections are formed on end faces of the holding sections, which are aligned opposite to the gripping surface.
  • the suppression choke for surface mounting is configured on a circuit board, wherein the lead wires lie through the positive fixing in the holding portions in a common connection plane that is consistent with the typically flat surface of the circuit board, to which Suppression choke should be placed.
  • the recesses in the holding portions are provided on the front side on the holding portions, so that the coil can be mounted in a mounting direction transverse to its winding axis in the holding means.
  • At least one retaining means has a connecting tongue projecting beyond the connecting plane, which is designed for engagement or a positive fixing of the holding means in a printed circuit board bore.
  • the terminal tongue can be guaranteed either a correct positioning of the suppression choke relative to the contact surfaces on the circuit board and / or a positive fixing of the holding means to the circuit board.
  • the connection tongue is provided with a barb, which engages behind a rear side of the circuit board and thus ensures a reliable determination of the suppression choke on the circuit board.
  • the object of the invention is achieved according to a second aspect by a method for producing a suppression choke, wherein the suppression choke comprises a wire coil body with terminal protruding leads and a holding means with at least one holding portion for receiving a lead wire and wherein the steps: positionally correct positioning of the wire coil body relative to the Holding means and positive pressing at least one connecting wire are provided in a holding portion.
  • suppression choke 1 is exemplified as an SMD component for surface mounting (SMD - Surface Mounted Device) on a printed circuit or printed circuit board of an electrical or electronic circuit, not shown.
  • SMD Surface Mounted Device
  • Such suppression chokes 1 are used for example for suppression of electric motors or for shielding electrical circuits against external interference.
  • the suppression choke 1 comprises by way of example a wire coil 2 and a holding means 3 coupled to the wire coil 2.
  • the wire coil 2 is designed as an example with a circular cross section, so that a substantially cylindrical outer contour results for the wire coil 2.
  • the wire coil 2 can be thoughtfully divided into a helical wire bobbin 4 and two respectively projecting from the wire bobbin 4 connecting wires 5.
  • a production of such a wire bobbin 4, for example, by winding a preferably provided with an insulating layer, in particular a coating, spool wire to a, not shown, preferably cylindrical winding core, are prepared.
  • successive turns of the wire bobbin 4 are arranged in direct contact with previous and subsequent turns, resulting in a particularly compact design for the wire bobbin 4.
  • the connecting wires 5 are each made in one piece with the wire bobbin 5.
  • a pitch for the individual turns of the wire bobbin greater than the diameter of the coil wire may be selected so that there is an air gap between adjacent turns.
  • the turns of the wire bobbin 4 determine a winding axis 6, which corresponds to an extension axis of the winding core, not shown.
  • the terminal wires 5 arranged on the end of the wire bobbin 4 are aligned tangentially to the turns of the wire bobbin 4 for the planned use of the suppression choke 1 as an SMD component, and are embodied in an exemplary linear fashion.
  • the connecting wires 5 each extend in mutually opposite spatial directions, but are transverse to the winding axis 6 aligned and preferably arranged in a common connection level 7.
  • the connection level 7 is synonymous with a preferably flat surface of a printed circuit board or printed circuit, not shown, on which the suppression choke 1 is to be placed.
  • the connecting wires 5 In order to ensure advantageous processability and a reliable fixing, in particular a cohesive fixing in the course of a soldering process, for the suppression choke 1 on the printed circuit board, it is necessary for the connecting wires 5 to be flat or aligned relative to the connecting plane 7. Otherwise, an insufficient contact between the lead wires 5 and the printed circuit contact surfaces, not shown, is formed, so that in the proposed soldering possibly no electrical connection between the contact surfaces of the printed circuit board and the lead wires is made or the suppression choke is unilaterally lifted off the circuit board, which would lead to a malfunction of the circuit board.
  • the holding means 3 is provided, which is made by injection molding, preferably made of a heat-resistant plastic. That in the FIGS. 1 to 3 shown holding means 3 includes two exemplified at opposite end portions holding portions 8, which are provided on the one hand for fixing the holding means 3 to the wire coil 2 and on the other hand serve for the correct alignment of the connecting wires 5. Between the holding portions 8, the holding means 3 comprises a plate-shaped base body 9, as shown in particular from the partially sectioned view of FIG. 2 and the sectional view of the FIG. 5 can be seen.
  • a longest edge 10 of the main body 9 extends parallel to the winding axis 6 of the wire spool 2. It can also be provided that reinforcing webs 15, which are aligned transversely to the largest surfaces 10 and 11, are provided on lateral end regions of the main body 9, which are shown as an example between the holding sections 8 extend and serve to increase the flexural strength of the body 9.
  • the holding sections 8 extend along the winding axis 6 only over a fraction of the length of the holding means 3 and each have a recess 16 which is adapted in its cross-section to a cross section of the wire bobbin 4 in order to accommodate the wire bobbin 4, preferably positively ,
  • the geometric configuration for the holding portions 8 of the holding means 3 is such that the wire spool 2 can elastically deform the respective holding portion 8 during a press-fit operation to effect a positive reception in the recess 16.
  • the recess 16 is designed in the form of a circle section, wherein in combination with a cuboidal outer envelope for the holding means 3 in a frontal view according to the Figures 2 and 5 a substantially U-shaped cross-section for the holding sections 8 results.
  • the holding portion has a first U-leg 17 and a second U-leg 18, which are connected to each other by means of a connecting web 19, which is formed substantially by the base body 9.
  • a connecting web 19 which is formed substantially by the base body 9.
  • At the free end portions of the U-legs 17 and 18 are exemplary chamfers 20, 21 are formed, which support a sliding in of the wire bobbin 4 during the press-fitting process in the holding portions 8 of the holding means 3.
  • the determination and alignment of the leads 5 is achieved in that the wire coil 2 is wound such that the two leads 5 relative to the connection level 7 before receiving in the holding means 3 each have an acute angle 27 with the connection level. 7 take, as in the FIG. 4 is shown.
  • the so-called “overwinding" of the wire coil 2 is selected so that the connecting wires 5 are aligned in the desired manner parallel to each other and to the connection level 7 after mounting the wire coil 2 in the holding means 3 by the resulting force relationships.
  • the "overwinding" is chosen so that the bias voltage in the wire bobbin 4 is so small that the wire spool 2 is not pushed out of the holding means 3 again.
  • the connecting wires lie without a recess on a, in particular flat, executed end side of the holding sections or that the connecting wires 5 as in the in FIG. 10 embodiment shown are received in a recess 54 of a holding means 53, which is provided for a positive reception of the connecting wires 5, wherein in the latter case, an "overwinding" can be at least almost or completely omitted.
  • the design of the holding means 3 for the suppression choke 1 according to the FIGS. 1 to 3 goes in particular from the FIGS. 5 to 7 out.
  • the use of an overwound wire spool 2 is provided.
  • the extent of the holding sections 8 along the winding axis 6 can be selected depending on the material of the holding means 3 and the length of the wire spool 2, it merely has to be ensured that a greater holding force is exerted by the positive reception of the wire spool 2 in the holding means 3, as is introduced by the reverse deformation of the recorded in the holding means 3 wire coil 2. This ensures that the connecting wires 5 in a desired manner flat against the end faces 22, 23 of the holding sections 8 and are aligned parallel to each other.
  • FIGS. 8 and 9 illustrated second embodiment of a holding means 33, the same reference numerals as for the holding means 3 are used for functionally identical components.
  • a wall section between U-limbs 37, 38 of the holding section 35 is provided in each case at the end on the holding means 33.
  • This wall portion 34 serves as a stop for the male inside the wire coil 2, in the FIG. 2 Accordingly, no additional precautions must be taken to set the spool core 26 in the wire coil 2, whereby a simplification for the installation of the suppression choke 1 can be achieved.
  • the Recess 54 is formed circular-cylindrical, wherein a central axis for the circular cylindrical recess 54 is disposed in the holding portion 55 below the end face 56 of the holding portion 55, so that the respective lead wire 5 can be introduced into the recess 54 only under elastic deformation of the wall of the recess 54, but then there is positively locked.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
EP15001187.2A 2014-05-16 2015-04-22 Bobine d'arrêt et procédé de production d'une bobine d'arrêt Active EP2947667B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014007246.0A DE102014007246A1 (de) 2014-05-16 2014-05-16 Entstördrossel und Verfahren zur Herstellung einer Entstördrossel

Publications (2)

Publication Number Publication Date
EP2947667A1 true EP2947667A1 (fr) 2015-11-25
EP2947667B1 EP2947667B1 (fr) 2019-09-04

Family

ID=53015465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15001187.2A Active EP2947667B1 (fr) 2014-05-16 2015-04-22 Bobine d'arrêt et procédé de production d'une bobine d'arrêt

Country Status (3)

Country Link
EP (1) EP2947667B1 (fr)
DE (1) DE102014007246A1 (fr)
ES (1) ES2748171T3 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146168A1 (de) * 1981-11-21 1983-06-23 Neosid Pemetzrieder Gmbh & Co Kg, 5884 Halver Induktives bauelement, insbesondere spule fuer hohe und sehr hohe frequenzen sowie verfahren zur herstellung eines solchen bauelementes
JPH07220930A (ja) * 1994-02-07 1995-08-18 Mosutetsuku:Kk リードフレーム枠体
DE29804135U1 (de) 1998-03-09 1998-04-30 Neosid Pemetzrieder GmbH & Co KG, 58553 Halver Stabkerndrossel
DE29824118U1 (de) * 1998-03-24 2000-06-08 Pemetzrieder Neosid Induktives Miniatur-Bauelement für SMD-Montage
DE19917580A1 (de) * 1999-04-19 2000-10-26 Erwin Hagn Bauteil mit Positonierfläche
US20050122195A1 (en) * 2003-12-04 2005-06-09 Bushnell Andrew H. High current long life inductor
DE102004048030A1 (de) * 2004-09-29 2006-03-30 Robert Bosch Gmbh Elektrische Drosselspule
DE102005022927A1 (de) * 2005-05-13 2006-11-16 Würth Elektronik iBE GmbH Elektronisches Bauteil und Verfahren zu seiner Befestigung
EP1916676A1 (fr) * 2005-08-15 2008-04-30 Harada Industry Co., Ltd. Filtre antibruit
US20090195341A1 (en) * 2006-05-29 2009-08-06 Sumida Corporation Coil Device for Antenna and Antenna System for Rear Window of Vehicle

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Publication number Priority date Publication date Assignee Title
US3555467A (en) * 1969-03-19 1971-01-12 Gen Electric Helical coil resonator having movable dielectric tuning element for varying capacitance
DE3620762A1 (de) * 1986-06-20 1987-12-23 Siemens Ag Elektrisches bauelement in chipbauweise
US5805431A (en) * 1996-01-17 1998-09-08 Synergy Microwave Corporation Surface Mountable transformer
JP2001044042A (ja) * 1999-07-29 2001-02-16 Taiyo Yuden Co Ltd リニアリティコイル
JP2007088363A (ja) * 2005-09-26 2007-04-05 Renesas Technology Corp 電子装置
TWM310531U (en) * 2006-08-23 2007-04-21 Frontier Electronics Co Ltd Coupling filter device with specific coupling coefficient
CN201112050Y (zh) * 2007-10-06 2008-09-10 台达电子工业股份有限公司 一种电感器的基座
DE102008030631A1 (de) * 2008-06-24 2009-12-31 Würth Elektronik iBE GmbH Elektronisches Bauelement
DE102008041465A1 (de) * 2008-08-22 2010-03-18 Schleifring Und Apparatebau Gmbh Balun für Kernspintomographen

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146168A1 (de) * 1981-11-21 1983-06-23 Neosid Pemetzrieder Gmbh & Co Kg, 5884 Halver Induktives bauelement, insbesondere spule fuer hohe und sehr hohe frequenzen sowie verfahren zur herstellung eines solchen bauelementes
JPH07220930A (ja) * 1994-02-07 1995-08-18 Mosutetsuku:Kk リードフレーム枠体
DE29804135U1 (de) 1998-03-09 1998-04-30 Neosid Pemetzrieder GmbH & Co KG, 58553 Halver Stabkerndrossel
DE29824118U1 (de) * 1998-03-24 2000-06-08 Pemetzrieder Neosid Induktives Miniatur-Bauelement für SMD-Montage
DE19917580A1 (de) * 1999-04-19 2000-10-26 Erwin Hagn Bauteil mit Positonierfläche
US20050122195A1 (en) * 2003-12-04 2005-06-09 Bushnell Andrew H. High current long life inductor
DE102004048030A1 (de) * 2004-09-29 2006-03-30 Robert Bosch Gmbh Elektrische Drosselspule
DE102005022927A1 (de) * 2005-05-13 2006-11-16 Würth Elektronik iBE GmbH Elektronisches Bauteil und Verfahren zu seiner Befestigung
EP1916676A1 (fr) * 2005-08-15 2008-04-30 Harada Industry Co., Ltd. Filtre antibruit
US20090195341A1 (en) * 2006-05-29 2009-08-06 Sumida Corporation Coil Device for Antenna and Antenna System for Rear Window of Vehicle

Also Published As

Publication number Publication date
EP2947667B1 (fr) 2019-09-04
ES2748171T3 (es) 2020-03-13
DE102014007246A1 (de) 2015-11-19

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