CA2282250A1 - Device for absorbing electric noise - Google Patents
Device for absorbing electric noise Download PDFInfo
- Publication number
- CA2282250A1 CA2282250A1 CA002282250A CA2282250A CA2282250A1 CA 2282250 A1 CA2282250 A1 CA 2282250A1 CA 002282250 A CA002282250 A CA 002282250A CA 2282250 A CA2282250 A CA 2282250A CA 2282250 A1 CA2282250 A1 CA 2282250A1
- Authority
- CA
- Canada
- Prior art keywords
- casing
- cable
- fixing
- fixing device
- elements
- 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.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H1/0007—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of radio frequency interference filters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0018—Casings with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables
Abstract
A device for absorbing electric noise on a cable contains a casing with ferrite elements, which are arranged around the cable. For fixing the ferrite elements in the casing and for fixing the casing to the cable use is made of deformable, rubber-like material cushions, which as a result of their deformation bring about a retaining force. Fixing to the cable takes place without projections or the like penetrating the cable insulation, so that the cable is protected.
Description
TG'C/'DTDTT111~1 DEVICE FOR ABSORBING ELECTRIC NOISE
It is known that electric noise on a line or cable can be reduced or propagation prevented with the aid of ferromagnetic material elements (US 3 462 715).
A device is already known (EP 452 992), in which two ferromagnetic material half-elements are housed in a split casing, whose bottoms have elastic pretensioning means, which press the two magnetic elements onto one another.
During this action it is necessary to hold the elements in the casing with the aid of separate, additional means.
The problem of the invention is to provide a simply constructed device for absorbing electric noise, which with simple means can also be fixed to the cable.
According to the invention this problem is solved by a device having the features of claim 1. Further developments of the invention form the sub-ject matter of the dependent claims, whose wording, like that of the abstract, is made by reference into part of the content of the present description.
The device is used in such a way that the two parts of the casing with the noise-preventing material elements inserted therein are placed round the cable. The fixing device fixes the elements in the casing. According to a further development of the invention the fixing device is constructed for fixing the casing to the cable. Thus, the structure and manufacture of the device can be further simplified.
According to the invention the fixing device is completely located within the casing and there are no projecting parts. The fixing device can in particular be positioned and constructed in such a way that it does not project into the opening of the casing.
According to the invention, the fixing device engages on at least one face of the element made from the noise-preventing or reducing material. The term face is used to designate the particular side into which the groove issues. It is also possible according to the invention for the fixing device to engage on at least one longitudinal side of the element, i.e. on a side where the groove does not issue.
According to a further development of the invention, the fixing device has a deformable cushion or pad, which is positioned between the casing and the element and brings about fixing by a jamming action. Through the compres-sion of the cushion a force is provided between the casing and the element which fixes the latter. The fixing force can act in the direction of the contact surface between the two elements.
The deformable cushion can e.g. be constructed as a rubber-like rod with a round and in particular circular cross-section, which permits a certain rolling of the element. According to a further development of the inven-tion, in an end view of the casing, the rubber-like rod passes through the cross-section of the through opening of the closed casing. Thus, the fixing of the casing to the cable takes place through the rubber-like element, which adapts to the shape of the cable and contacts the latter over part of the circumference. Such a fixing has the important advantage that there is no penetration of any part into the cable insulation, which clearly protects the cable.
Further features, details and advantages of the invention can be gathered from the following description of a preferred embodiment of the invention and the attached drawings, wherein show:
Fig. 1 A plan view of a folded out casing comprising two parts.
Fig. 2 A longitudinal section through the casing along line II-II in fig. 1.
Fig. 3 A front view of a casing half.
Fig. 1 is a plan view of a folded out casing comprising two interconnected parts. The casing contains two casing half-parts 1, 2, which are inter-connected with the aid of a shaped-on hinge 3. For locking the casing the longitudinal edge of one casing half remote from the hinge connection 3 contains a recess 4 and the facing longitudinal edge of the other casing half a projection 5, which fits into the recess. On the projection 5 can be provided locking devices cooperating with the recess 4.
In both parts 1, 2 of the casing are inserted elements 5 made from a mater-ial absorbing or reducing noise on a line or cable, fig. 1 only showing such an element'S in the left-hand part 1. The bottom of each part is centrally provided with a projection 6 roughly shaped like a hemisphere, which determines the orientation of the elements 5.
For fixing the element 5 is provided a fixing device, which contains two deformable rods 7 made from a rubber-like material. The two rods 7 are in each case inserted between a face 8 of the element 5 and the inside of the casing part 1, 2. Insertion takes place under pretension, so that the rods 7 deform and consequently bring about a fixing force. This can best be gathered from fig. 2, which is a longitudinal section through the casing part 1. The rubber rods 7 are located roughly in the vicinity of the con-tact surface 9 of casing part 1. As a result of the clamping between the elements 5 and the casing the cross-section thereof is deformed into an ellipse.
Fig. 3 shows that the rubber rod 7 in an end view traverses the cross-section of the through opening formed in the closed casing. This through opening is formed by the two half-openings 10 in the two casing parts 1, 2.
On folding together or assembling the two casing parts 1, 2 the cable, on which the noise is to be absorbed, is located between the two rubber rods, so that the latter are deflected from the linear shape and closely engage over part of the cable circumference. Thus, the casing with the elements is fixed to the cable, without there being any penetration of the fixing device with a projection or the like into the cable insulation. Also when the device is moved longitudinally by force the cable is not damaged.
It is known that electric noise on a line or cable can be reduced or propagation prevented with the aid of ferromagnetic material elements (US 3 462 715).
A device is already known (EP 452 992), in which two ferromagnetic material half-elements are housed in a split casing, whose bottoms have elastic pretensioning means, which press the two magnetic elements onto one another.
During this action it is necessary to hold the elements in the casing with the aid of separate, additional means.
The problem of the invention is to provide a simply constructed device for absorbing electric noise, which with simple means can also be fixed to the cable.
According to the invention this problem is solved by a device having the features of claim 1. Further developments of the invention form the sub-ject matter of the dependent claims, whose wording, like that of the abstract, is made by reference into part of the content of the present description.
The device is used in such a way that the two parts of the casing with the noise-preventing material elements inserted therein are placed round the cable. The fixing device fixes the elements in the casing. According to a further development of the invention the fixing device is constructed for fixing the casing to the cable. Thus, the structure and manufacture of the device can be further simplified.
According to the invention the fixing device is completely located within the casing and there are no projecting parts. The fixing device can in particular be positioned and constructed in such a way that it does not project into the opening of the casing.
According to the invention, the fixing device engages on at least one face of the element made from the noise-preventing or reducing material. The term face is used to designate the particular side into which the groove issues. It is also possible according to the invention for the fixing device to engage on at least one longitudinal side of the element, i.e. on a side where the groove does not issue.
According to a further development of the invention, the fixing device has a deformable cushion or pad, which is positioned between the casing and the element and brings about fixing by a jamming action. Through the compres-sion of the cushion a force is provided between the casing and the element which fixes the latter. The fixing force can act in the direction of the contact surface between the two elements.
The deformable cushion can e.g. be constructed as a rubber-like rod with a round and in particular circular cross-section, which permits a certain rolling of the element. According to a further development of the inven-tion, in an end view of the casing, the rubber-like rod passes through the cross-section of the through opening of the closed casing. Thus, the fixing of the casing to the cable takes place through the rubber-like element, which adapts to the shape of the cable and contacts the latter over part of the circumference. Such a fixing has the important advantage that there is no penetration of any part into the cable insulation, which clearly protects the cable.
Further features, details and advantages of the invention can be gathered from the following description of a preferred embodiment of the invention and the attached drawings, wherein show:
Fig. 1 A plan view of a folded out casing comprising two parts.
Fig. 2 A longitudinal section through the casing along line II-II in fig. 1.
Fig. 3 A front view of a casing half.
Fig. 1 is a plan view of a folded out casing comprising two interconnected parts. The casing contains two casing half-parts 1, 2, which are inter-connected with the aid of a shaped-on hinge 3. For locking the casing the longitudinal edge of one casing half remote from the hinge connection 3 contains a recess 4 and the facing longitudinal edge of the other casing half a projection 5, which fits into the recess. On the projection 5 can be provided locking devices cooperating with the recess 4.
In both parts 1, 2 of the casing are inserted elements 5 made from a mater-ial absorbing or reducing noise on a line or cable, fig. 1 only showing such an element'S in the left-hand part 1. The bottom of each part is centrally provided with a projection 6 roughly shaped like a hemisphere, which determines the orientation of the elements 5.
For fixing the element 5 is provided a fixing device, which contains two deformable rods 7 made from a rubber-like material. The two rods 7 are in each case inserted between a face 8 of the element 5 and the inside of the casing part 1, 2. Insertion takes place under pretension, so that the rods 7 deform and consequently bring about a fixing force. This can best be gathered from fig. 2, which is a longitudinal section through the casing part 1. The rubber rods 7 are located roughly in the vicinity of the con-tact surface 9 of casing part 1. As a result of the clamping between the elements 5 and the casing the cross-section thereof is deformed into an ellipse.
Fig. 3 shows that the rubber rod 7 in an end view traverses the cross-section of the through opening formed in the closed casing. This through opening is formed by the two half-openings 10 in the two casing parts 1, 2.
On folding together or assembling the two casing parts 1, 2 the cable, on which the noise is to be absorbed, is located between the two rubber rods, so that the latter are deflected from the linear shape and closely engage over part of the cable circumference. Thus, the casing with the elements is fixed to the cable, without there being any penetration of the fixing device with a projection or the like into the cable insulation. Also when the device is moved longitudinally by force the cable is not damaged.
Claims (9)
1. Device for absorbing or reducing electric noise, having a casing, which has two casing half-shells for in each case receiving an element of a noise-preventing material and in the assembled state in its two end walls in each case one through opening for an electric cable, two elements made from said material, which are located in the casing half-shells and in each case have a semicylindrical groove, which in the assembled state of the casing form a closed, cylindrical passage for the electric cable, as well as with a fixing device for fixing the elements made from said material in the particular half-shell.
2. Device according to claim 1, wherein the fixing device is constructed for fixing the casing to the cable.
3. Device according to claim 1 or 2, wherein the fixing device is located completely within the casing.
4. Device according to one of the preceding claims, wherein the fixing device engages on at least one end face of the element.
5. Device according to one the preceding claims, wherein the fixing device engages on at least one longitudinal side of the element.
6. Device according to claim 1, wherein the fixing device has a deformable cushion clampable between the elements and the casing.
7. Device according to claim 6, wherein the cushion is constructed as a rubber-like rod with a preferably round cross-section.
8. Device according to claim 7, wherein the rod in front view passes through the cross-section of the passage of the assembled element.
9. Device according to claim 7 or 8, wherein the rod in front view passes through opening of the closed casing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19842323.3 | 1998-09-16 | ||
| DE19842323A DE19842323A1 (en) | 1998-09-16 | 1998-09-16 | Cable-mounted electromagnetic noise suppresser comprises shells containing ferromagnetic material, designed for simpler manufacture and attachment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2282250A1 true CA2282250A1 (en) | 2000-03-16 |
Family
ID=7881106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002282250A Abandoned CA2282250A1 (en) | 1998-09-16 | 1999-09-15 | Device for absorbing electric noise |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1001530B1 (en) |
| AT (1) | ATE523958T1 (en) |
| CA (1) | CA2282250A1 (en) |
| DE (1) | DE19842323A1 (en) |
| DK (1) | DK1001530T3 (en) |
| ES (1) | ES2372373T3 (en) |
| PT (1) | PT1001530E (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014001558U1 (en) * | 2014-02-20 | 2015-05-21 | Grass Gmbh | "Device for absorbing or reducing interference signals on an electrical conductor" |
Family Cites Families (11)
| 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 |
| 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 |
| US5506909A (en) * | 1994-05-23 | 1996-04-09 | Jet Man Enterprise Co., Ltd. | Noise filtering device |
| DE29515545U1 (en) * | 1995-09-29 | 1995-11-23 | Easy Magnet Corp | Noise reduction device for wires |
| DE19536155A1 (en) * | 1995-09-29 | 1997-04-03 | Wuerth Elektronik Gmbh & Co Kg | Device for absorbing electrical noise |
| JP3126922B2 (en) * | 1996-07-19 | 2001-01-22 | 竹内工業株式会社 | Noise absorber |
| US5764125A (en) * | 1997-01-22 | 1998-06-09 | Ferrishield, Inc. | Suppressor case with rocking ferrite |
-
1998
- 1998-09-16 DE DE19842323A patent/DE19842323A1/en not_active Withdrawn
-
1999
- 1999-09-10 PT PT99117840T patent/PT1001530E/en unknown
- 1999-09-10 ES ES99117840T patent/ES2372373T3/en not_active Expired - Lifetime
- 1999-09-10 EP EP99117840A patent/EP1001530B1/en not_active Expired - Lifetime
- 1999-09-10 DK DK99117840.1T patent/DK1001530T3/en active
- 1999-09-10 AT AT99117840T patent/ATE523958T1/en active
- 1999-09-15 CA CA002282250A patent/CA2282250A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| ES2372373T3 (en) | 2012-01-19 |
| DE19842323A1 (en) | 2000-03-23 |
| DK1001530T3 (en) | 2011-12-12 |
| EP1001530A2 (en) | 2000-05-17 |
| EP1001530B1 (en) | 2011-09-07 |
| PT1001530E (en) | 2011-10-13 |
| EP1001530A3 (en) | 2001-01-24 |
| ATE523958T1 (en) | 2011-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |