EP0981856A1 - Device for absorbing electric noise - Google Patents
Device for absorbing electric noiseInfo
- Publication number
- EP0981856A1 EP0981856A1 EP99913249A EP99913249A EP0981856A1 EP 0981856 A1 EP0981856 A1 EP 0981856A1 EP 99913249 A EP99913249 A EP 99913249A EP 99913249 A EP99913249 A EP 99913249A EP 0981856 A1 EP0981856 A1 EP 0981856A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- web
- locking
- opening
- recess
- 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
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
-
- 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
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F2017/065—Core mounted around conductor to absorb noise, e.g. EMI filter
-
- 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
- H01F27/02—Casings
- H01F27/027—Casings specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
Definitions
- the invention relates to a device for absorbing electrical noise. It has long been known that elements made of ferromagnetic material can be used to reduce the electrical noise on the line (US Pat. No. 3462715).
- the invention has for its object to provide a simply constructed and safe-acting device for absorbing the electrical noise.
- the invention proposes a device with the features of claim 1. Further developments of the invention are the subject of the dependent claims, the wording of which, like the wording of the abstract, is made by reference to the content of the description.
- the device is used in such a way that the two elements made of the noise-preventing material, which will be called ferrite elements in the following, are inserted into the partial housing shells - 2 -
- the device for fixing the ferrite elements acts on at least one end corner edge of the ferrite element which runs perpendicular to the interface between the two ferrite elements.
- the fixing device therefore acts in such a way that no forces arise which press the ferrite elements in the direction of the separating surface, so that they cannot yield in the opposite direction either.
- the fixing device can have a web, which is arranged in the region of a corner of the housing half and runs obliquely to the corner and engages the ferrite element.
- This bridge can be easily manufactured without additional effort when the housing is manufactured.
- the web can in particular have a notch in which the corresponding corner of the ferrite element comes to rest.
- the web mentioned is molded on the one hand on the end wall and on the other hand the side wall of the housing. It preferably runs freely between the two locations at which it is integrally formed, so that it can exert a certain tension.
- the web prefferably divided so that the mutually associated ends of the two parts of the web can engage the ferrite element.
- the mutually facing ends of the two web parts run beveled, the bevel being chosen in particular so that the beveled edges lie flat against the ferrite elements.
- one web part is formed on the end wall and the other on the side wall of the partial shell of the housing.
- the web or the two web parts does not extend to the bottom of the partial shells of the housing.
- the device can have a locking device for locking the housing in the closed state. This is to ensure that the housing does not open again, so that the device remains effective. It can advantageously be provided that the locking device is arranged and designed such that it does not protrude beyond the outside of the closed housing, in particular is arranged completely inside the housing. This precludes intentional or unintentional access to the locking device.
- the locking device has a tab formed on an edge of one housing half, which engages in a recess in the edge of the other housing half. This arrangement on the edge can ensure that the tab is no longer accessible when the housing is closed. It can be provided that the recess is only open into the interior of the housing.
- the latching can in particular be designed so that it takes place on the front edges of the recess. - 4 -
- the tab has a resilient latching tongue in the area of at least one of its opposite ends.
- the latching can be designed such that it opposes an opening. This can be achieved, for example, by the type of arrangement of the spring.
- the housing according to the invention can have an opening through which the locking device can be attacked with the aid of a special tool. Then a specialist will be able to open the facility and replace it if necessary.
- the through opening for the cable can be formed by two recesses in the end walls of the two housing halves. When the housing is closed, the two mutually opposite recesses then form the
- the two recesses are offset along the mutually associated edges of the housing halves. This creates bottlenecks that can be used to compensate for different sized diameters of the cables without the recesses having to deviate from the smooth shape.
- the through openings deviate from the circular shape, that is to say, for example, they are oval or elliptical.
- the two partial shells can be connected to one another, for example, by a film hinge. But it is - 5 -
- FIG. 2 shows a top view of the opened housing from above in FIG. 1 with an indicated ferrite element
- FIG 3 shows a longitudinal section through a housing half.
- Fig. 4 is a partial view of the tab of the locking device
- FIG. 5 shows an end view of a closed housing in a first embodiment
- Fig. 7 is an end view in a third embodiment
- FIG. 8 shows a representation corresponding to FIG. 3 through a further embodiment
- FIG. 9 shows a representation corresponding to FIG. 1 in the embodiment of FIG. 8; - 6 -
- FIG. 10 shows a top view corresponding to FIG. 2 in the embodiment of FIGS. 8 and 9;
- 11 is a view of a tool for opening the
- Each housing half 1, 2 has the shape of a box open on one side with a bottom 3 and two longitudinal side walls 4, which are connected to one another in front and behind the plane of the drawing by end walls 5.
- the free edges 6 of the side and end walls lie in one plane.
- Two of the longitudinal side walls 4 facing each other are connected to one another by a film hinge 7.
- the side wall 4 of the two housing halves facing away from the film hinge 7 contains a tab 8 which, together with a recess 9 in the opposite side wall 4 of the other housing half, forms a locking device.
- a semicircular recess 10 is formed in each end wall 5 and is arranged at the same point in each end wall 5. If the two housing halves 1, 2 are folded together about the axis formed by the film hinge 7, the free edges of the walls lie one on top of the other and the two recesses 10 form a through opening. This through opening has a circular shape.
- FIG. 2 shows a top view of the arrangement of FIG. 1.
- the webs 11 consist of two parts 12, 13 which are arranged in a mutual extension.
- a web part 12 is formed on the inside of the end wall 5 and extends at an angle of approximately 45 ° in the direction of the adjacent longitudinal side wall 4.
- the second web part 13 is arranged on the adjacent longitudinal side wall 4 and also extends at an angle of approximately 45 ° in Direction to the adjacent end wall 5.
- the surfaces of the web parts 12, 13 facing the corner 14 lie in one plane.
- the two free edges 15, 16 of the two parts 12, 13 of the web 12 are chamfered so that they form a corner at an angle of 90 °.
- the edges 15, 16 can thus lie flat on the side surfaces 17, 18 of the corner of a ferrite element 19. Size tolerances of the ferrite elements 19 can be compensated for by slightly giving in the web parts 12, 13 into the interior of the corner 14.
- the webs 11 present at all four corners 14 of the housing halves 1, 2 form a fixing device in order to hold a ferrite element 19 in each housing half 1, 2.
- An angle compensation for the ferrite elements 19 is provided in the form of a rounded projection 20 on the bottom 3 of each housing half 1, 2.
- the tab 8 forming part of the locking device is formed on the edge 21 of the side wall 4. Its outside 22 is offset inwards from the outside 23 of the longitudinal side wall 4.
- the tab 8 cooperates with the recess 9 of the opposite side wall 4 of the other housing half 1. This recess is open into the interior of the housing half 1.
- Both ends 24 of the recess 9 have ribs 25 arranged to form a catch, see FIG. 1.
- the tab 8 has in the area of its two end edges 25 each a detent 26, see FIG. 4, which is formed at the end of a spring tongue 27.
- the spring tongue 27 is integrally formed on the end surface 28 of the tab 8. This means that the locking lug 26, which is held in the ribbing 25, wedges outwards when it is pulled out, thereby strengthening the fixing.
- the locking lug 26 which is held in the ribbing 25, wedges outwards when it is pulled out, thereby strengthening the fixing.
- Tab 8 in the interior of the housing projections 29 which project beyond the inside 30 of the longitudinal side wall 4. Since the two longitudinal side walls 4 are of the same thickness in the area of the tab 8 and the recess 9, these projections 29 protrude beyond the inner wall even when the housing is closed.
- the bottom 3 of the housing half 1, which contains the recess 9, contains two openings 31 which directly adjoin the inside of the longitudinal side wall 4 having the recess 9. Through these openings, one can reach into the interior of the closed housing with a tool and, by engaging the projections 29, bring the locking lugs 26 out of engagement with the ribs 25.
- Fig. 3 shows a longitudinal section through the left half of the housing in Figures 1 and 2 with the recess 9.
- Fig. 3 also shows that the webs 11 extend from the edge to the same point where the - 9 -
- Recesses 10 end, which together form the through opening.
- FIG. 5 now shows an end view of the housing shown in FIGS. 1 to 4 with the housing closed.
- the housing forms a smooth outside. Since the two recesses 10 are provided with the same diameter and have the same distance from both longitudinal sides, a circular through opening 32 is formed.
- the recesses are also semicircular with the same diameter, but at offset locations on the side walls 5.
- a through opening 33 is formed which forms a constriction on the separating surface of the two housing halves and which can be used for fixing to the cable.
- the two end walls 5 of the two housing halves each have a recess 34, which differs from the circular shape in the example shown, so that an oval through-opening is formed in the closed state of the housing.
- FIGS. 8 to 10 show representations which correspond to FIGS. 3 to 1 in an embodiment which is somewhat modified. The description is limited to those parts in which a change has been made.
- the webs for holding the corner edges of the ferrites 19 are designed differently.
- the webs 41 start from the bottom of the two housing halves and extend to approximately the middle of the height of the two housing halves.
- the end edges facing the parting surface run in the side - 10 -
- a blind hole 43 is formed on both sides of the recess 9 and extends from the edge 21 and is intended for receiving a cylindrical pin 44.
- the pins 44 can be seen in FIG. 10.
- the tab 45 corresponding to the tab 8 in the previous embodiment is generally somewhat thicker, as is the associated part of the side wall 4. Again, openings 31 are arranged in the bottom 3 of the housing half 2 containing the recess 9, through which a person skilled in the art can use a Tool can engage the tab 8 to release the lock.
- Fig. 10 it can be seen that instead of a centrally arranged film hinge there are two film hinges 7 which are arranged in the end region of the connection point between the two housing halves.
- the edges 21 of the two mutually facing side walls 4 which are now freely available as a result are each provided with a depression 46 and a strip-like projection 47 corresponding to the depression.
- the projections 47 When folded, the projections 47 come to lie in the recesses 46. Through the engagement of these projections and depressions and the interaction of the pins 44 engaging in the blind holes 43, an additional locking of the housing is provided, which also makes lateral turning or shearing of the housing halves almost impossible. It is therefore practically impossible to detach an electrical noise absorbing device once attached to a cable from the cable. This can only be done by people who have the necessary tools and know how to use them through the openings 31.
- Fig. 11 shows a tool 50 in the form of a key with which the collapsed housing can be opened again.
- the key contains two parallel rectilinear legs 51 with a rectangular cross section, the spacing and size of which correspond to the spacing and size of the openings 31 in the bottom of one housing half-shell. For this, reference is made to FIG. 2.
- the legs 51 are long enough to match the
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06006998A EP1689078B1 (en) | 1998-03-13 | 1999-03-11 | Device for absorbing electric noise |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19811048A DE19811048A1 (en) | 1998-03-13 | 1998-03-13 | Absorber of electric noise |
DE19811048 | 1998-03-13 | ||
PCT/EP1999/001562 WO1999048198A1 (en) | 1998-03-13 | 1999-03-11 | Device for absorbing electric noise |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06006998A Division EP1689078B1 (en) | 1998-03-13 | 1999-03-11 | Device for absorbing electric noise |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0981856A1 true EP0981856A1 (en) | 2000-03-01 |
EP0981856B1 EP0981856B1 (en) | 2006-05-24 |
Family
ID=7860859
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99913249A Expired - Lifetime EP0981856B1 (en) | 1998-03-13 | 1999-03-11 | Device for absorbing electric noise |
EP06006998A Expired - Lifetime EP1689078B1 (en) | 1998-03-13 | 1999-03-11 | Device for absorbing electric noise |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06006998A Expired - Lifetime EP1689078B1 (en) | 1998-03-13 | 1999-03-11 | Device for absorbing electric noise |
Country Status (17)
Country | Link |
---|---|
US (1) | US6400248B1 (en) |
EP (2) | EP0981856B1 (en) |
JP (1) | JP4312839B2 (en) |
CN (1) | CN1264275C (en) |
AT (2) | ATE327590T1 (en) |
AU (1) | AU3144699A (en) |
CA (1) | CA2288774C (en) |
DE (3) | DE19811048A1 (en) |
DK (2) | DK1689078T3 (en) |
ES (2) | ES2289725T3 (en) |
HK (2) | HK1026080A1 (en) |
MY (1) | MY128937A (en) |
NO (1) | NO315069B1 (en) |
PT (2) | PT981856E (en) |
TR (1) | TR199902791T1 (en) |
TW (1) | TW508903B (en) |
WO (1) | WO1999048198A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010042743A1 (en) | 2010-10-21 | 2012-04-26 | Würth Elektronik eiSos Gmbh & Co. KG | Device for absorbing the noise |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10326685A1 (en) * | 2003-06-03 | 2004-12-23 | Würth Elektronik eiSos Gmbh & Co. KG | Device for absorbing the noise |
GB0500508D0 (en) * | 2005-01-12 | 2005-02-16 | Tyco Electronics Raychem Nv | An interconection arrangement and related assemblies |
DE102006027312A1 (en) * | 2006-06-08 | 2007-12-13 | Würth Elektronik eiSos Gmbh & Co. KG | Device for absorbing the noise |
JP6142391B2 (en) * | 2013-08-08 | 2017-06-07 | 北川工業株式会社 | Holder and noise current absorber |
DE102019215619B3 (en) * | 2019-10-11 | 2020-12-24 | Würth Elektronik eiSos Gmbh & Co. KG | Apparatus for absorbing electrical noise on conduits and methods of placing such apparatus |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3462715A (en) | 1966-06-06 | 1969-08-19 | Itt | Removable electrical connector filter assembly |
JPH0234875Y2 (en) * | 1986-08-29 | 1990-09-19 | ||
JPH0543510Y2 (en) * | 1988-09-29 | 1993-11-02 | ||
JP2521801Y2 (en) * | 1989-02-17 | 1997-01-08 | 北川工業 株式会社 | Noise absorber |
DE9005965U1 (en) * | 1989-05-29 | 1990-08-02 | Kitagawa Industries Co., Ltd., Nagoya, Aichi, Jp | |
US5003278A (en) * | 1990-03-01 | 1991-03-26 | Ferrishield, Inc. | Ferrite suppressor case with retaining fingers |
JPH04363007A (en) * | 1991-01-24 | 1992-12-15 | Nikko Kogyo Kk | Signal discriminator |
JPH0745995Y2 (en) * | 1991-07-18 | 1995-10-18 | 北川工業株式会社 | Noise absorber |
US5373277A (en) * | 1991-08-07 | 1994-12-13 | Mitsubishi Denki Kabushiki Kaisha | Signal discriminator |
DE4302650C2 (en) * | 1992-02-03 | 2001-07-19 | Kitagawa Ind Co Ltd | Electrical noise absorber |
US5334955A (en) * | 1993-03-01 | 1994-08-02 | Strnad Edward F | Cable signal interference suppressor |
US5703557A (en) * | 1993-07-08 | 1997-12-30 | Tokin Corporation | Noise absorbing device |
US5506909A (en) * | 1994-05-23 | 1996-04-09 | Jet Man Enterprise Co., Ltd. | Noise filtering device |
DE9408883U1 (en) * | 1994-05-31 | 1994-07-28 | Jet Man Enterprise Co | Interference filter device |
US6023023A (en) * | 1996-07-19 | 2000-02-08 | Takeuchi Industrial Co., Ltd. | Noise absorbing apparatus |
JP3126922B2 (en) * | 1996-07-19 | 2001-01-22 | 竹内工業株式会社 | Noise absorber |
JP3246599B2 (en) * | 1997-03-14 | 2002-01-15 | ティーディーケイ株式会社 | Noise absorber |
-
1998
- 1998-03-13 DE DE19811048A patent/DE19811048A1/en not_active Withdrawn
-
1999
- 1999-03-09 MY MYPI99000861A patent/MY128937A/en unknown
- 1999-03-11 PT PT99913249T patent/PT981856E/en unknown
- 1999-03-11 EP EP99913249A patent/EP0981856B1/en not_active Expired - Lifetime
- 1999-03-11 AU AU31446/99A patent/AU3144699A/en not_active Abandoned
- 1999-03-11 EP EP06006998A patent/EP1689078B1/en not_active Expired - Lifetime
- 1999-03-11 DE DE59914411T patent/DE59914411D1/en not_active Expired - Lifetime
- 1999-03-11 ES ES06006998T patent/ES2289725T3/en not_active Expired - Lifetime
- 1999-03-11 CA CA002288774A patent/CA2288774C/en not_active Expired - Lifetime
- 1999-03-11 AT AT99913249T patent/ATE327590T1/en active
- 1999-03-11 DK DK06006998T patent/DK1689078T3/en active
- 1999-03-11 CN CNB998002852A patent/CN1264275C/en not_active Expired - Lifetime
- 1999-03-11 TR TR1999/02791T patent/TR199902791T1/en unknown
- 1999-03-11 PT PT06006998T patent/PT1689078E/en unknown
- 1999-03-11 WO PCT/EP1999/001562 patent/WO1999048198A1/en active IP Right Grant
- 1999-03-11 AT AT06006998T patent/ATE367012T1/en active
- 1999-03-11 JP JP54650799A patent/JP4312839B2/en not_active Expired - Lifetime
- 1999-03-11 TW TW088103753A patent/TW508903B/en not_active IP Right Cessation
- 1999-03-11 DK DK99913249T patent/DK0981856T3/en active
- 1999-03-11 US US09/423,581 patent/US6400248B1/en not_active Expired - Lifetime
- 1999-03-11 DE DE59913451T patent/DE59913451D1/en not_active Expired - Lifetime
- 1999-03-11 ES ES99913249T patent/ES2267260T3/en not_active Expired - Lifetime
- 1999-11-11 NO NO19995517A patent/NO315069B1/en not_active IP Right Cessation
-
2000
- 2000-08-24 HK HK00105334A patent/HK1026080A1/en unknown
-
2006
- 2006-12-28 HK HK06114219A patent/HK1093386A1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9948198A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010042743A1 (en) | 2010-10-21 | 2012-04-26 | Würth Elektronik eiSos Gmbh & Co. KG | Device for absorbing the noise |
WO2012052351A1 (en) | 2010-10-21 | 2012-04-26 | Würth Elektronik eiSos Gmbh & Co. KG | Device for absorption of noise |
AU2011317695B2 (en) * | 2010-10-21 | 2015-01-15 | Würth Elektronik eiSos Gmbh & Co. KG | Device for absorption of noise |
Also Published As
Publication number | Publication date |
---|---|
MY128937A (en) | 2007-03-30 |
CA2288774A1 (en) | 1999-09-23 |
NO995517D0 (en) | 1999-11-11 |
JP4312839B2 (en) | 2009-08-12 |
DE19811048A1 (en) | 1999-09-23 |
EP1689078B1 (en) | 2007-07-11 |
DK0981856T3 (en) | 2006-06-19 |
PT1689078E (en) | 2007-08-13 |
ATE327590T1 (en) | 2006-06-15 |
US6400248B1 (en) | 2002-06-04 |
DE59914411D1 (en) | 2007-08-23 |
NO995517L (en) | 2000-01-12 |
CN1258394A (en) | 2000-06-28 |
DK1689078T3 (en) | 2007-11-12 |
DE59913451D1 (en) | 2006-06-29 |
NO315069B1 (en) | 2003-06-30 |
EP0981856B1 (en) | 2006-05-24 |
HK1093386A1 (en) | 2007-03-02 |
TR199902791T1 (en) | 2000-07-21 |
ES2267260T3 (en) | 2007-03-01 |
WO1999048198A1 (en) | 1999-09-23 |
CN1264275C (en) | 2006-07-12 |
CA2288774C (en) | 2009-08-18 |
HK1026080A1 (en) | 2000-12-01 |
PT981856E (en) | 2006-07-31 |
JP2001525128A (en) | 2001-12-04 |
ES2289725T3 (en) | 2008-02-01 |
EP1689078A1 (en) | 2006-08-09 |
AU3144699A (en) | 1999-10-11 |
TW508903B (en) | 2002-11-01 |
ATE367012T1 (en) | 2007-08-15 |
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