EP0723318B1 - Kohlebürste - Google Patents
Kohlebürste Download PDFInfo
- Publication number
- EP0723318B1 EP0723318B1 EP96104231A EP96104231A EP0723318B1 EP 0723318 B1 EP0723318 B1 EP 0723318B1 EP 96104231 A EP96104231 A EP 96104231A EP 96104231 A EP96104231 A EP 96104231A EP 0723318 B1 EP0723318 B1 EP 0723318B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carbon brush
- recess
- sleeve
- section
- signal lead
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 86
- 239000011810 insulating material Substances 0.000 claims abstract description 7
- 210000002445 nipple Anatomy 0.000 claims description 14
- 230000003993 interaction Effects 0.000 claims 1
- 230000011664 signaling Effects 0.000 description 24
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 5
- 229920006362 Teflon® Polymers 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/58—Means structurally associated with the current collector for indicating condition thereof, e.g. for indicating brush wear
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/38—Brush holders
- H01R39/383—Brush holders characterised by the electrical connection to the brush holder
Definitions
- the invention relates to a carbon brush with a cuboid or cylindrical geometry with side or end faces, one end face on a commutator or slip ring of an electric motor can be applied, comprising current-carrying ones arranged in the carbon brush Strand, possibly an insulating material, in the longitudinal axis of the carbon brush spring-loaded shut-off nipple as well as a signaling wire with a section in one preferably in the longitudinal direction of the carbon brush extending first recess such as bore is arranged and fixed in order to display a specific carbon brush consumption generate a signal by interacting with the commutator or slip ring.
- Signaling braids can at least in the section running inside the carbon brush be covered at least in regions with Teflon or an equivalent material. The section is then glued into the recess. So that the signal wire from the Adhesive material cannot slip out - Teflon will not accept an adhesive - will on the one hand, the section surrounded by Teflon has a wavy or twisted geometry embossed and on the other hand the section loop or U-shaped in the recess relocated. The installation of corresponding signal wires is clearly complex.
- FR-A 2 223 858 it is known to use a signal wire surrounded by an insulating jacket to be arranged in a sleeve made of insulating material, which can be fixed in position without being fixed at the end at least in areas within a correspondingly adapted recess of the Carbon brush extends.
- EP 0 232 209 A1 uses optical conductors to detect carbon brush wear used to send and receive light signals.
- DE 28 04 547 A1 discloses a carbon brush for collector motors, in which one signaling wire surrounded by an insulating jacket is arranged in a longitudinal bore.
- the G 84 33 023 U1 is a prefabricated one Proposed plastic sleeve which can be inserted into a bore in a carbon brush.
- the signal wire is then inserted into the plastic part itself. So that the signal wire in the Sleeve remains, it is slotted, so that the signal wire when inserted into the carbon brush is clamped between the mutually movable longitudinal halves of the sleeve.
- the bore for receiving the sleeve is too large compared to its outer diameter, a secure hold of the signal wire is not guaranteed. Even at high temperatures the sleeve is melted, causing an uncontrolled displacement of the signal wire he follows.
- the present invention has for its object a carbon brush of the beginning to further develop the described type in such a way that it is easy to assemble in an automated manner the carbon brush is made with the signal wire, which is also a simple and safe Fixation of the signal wire should be guaranteed. It should also be ensured that through the position fixation of the signal wire no tensions in the carbon brush occur, in particular with layered carbon brushes can lead to inadmissible cracks.
- the object is achieved in that the signal wire via one of a second recess extending in the longitudinal direction of the carbon brush it is fixable in position that the signaling wire via the second recess in the first Mashed recess or via a through the second recess with the signal wire or a receiving the signal wire sleeve interacting fastener is fixed in position.
- the longitudinal bore in the carbon brush, within which the signal wire runs considerably larger cross-section than the signal wire itself must have in order to pound bring the required material.
- the longitudinal bore can be the cross section of the Signaling wire must be adjusted so that a sufficient residual wall thickness remains.
- the bore emanating from the side surface can have a relatively large cross section have to bring in and over this the powder for pounding the signal wire condense.
- the cross section of the second recess that is to say the one, preferably amounts to should run perpendicular or approximately perpendicular to the longitudinal axis of the carbon brush, approximately 1.5 times the cross section of the first recess, which is said to be approximately that the signal wire is adapted.
- the second recess should be at a distance L / 3 to L / 2 from the free end of the section of the carbon brush
- the signal wire runs, the length of which corresponds within the carbon brush L.
- a carbon brush is distinguished characterized in that a pin element is arranged in the second recess, which preferably above an edge of the sleeve and touching it.
- the sleeve over the second preferably perpendicular to the longitudinal axis of the carbon brush extending recess is pounded in the first recess.
- the signal wire Since the signal wire is cut to length before being inserted into the carbon brush, it must be ensured that that the free end is stripped. For this purpose, it can be provided that the signal wire after their cutting to length and, if appropriate, pretreatment in one etchant in one Glue is preferably dipped from a polyurethane base.
- shut-off nipple (14) is made of insulating material and is in the direction of the longitudinal axis (16) of the carbon brush (10) is preferably spring-biased by means of a helical spring (18).
- Both the stranded wire (12) and the shut-off nipple (14) are made of powdered metal or powder (20) or (22) stamped. Between the one that covers the shut-off nipple (14) Punching powder (22) and the end face facing it can also have an insulating plate (24) can be arranged on which the coil spring (18) is supported.
- a section (26) of a signaling wire (28) also runs within the carbon brush (10).
- a signal is to be triggered via the signaling wire (28), namely when the one not shown commutator or slip ring interacting carbon brush (10) in one Scope is worn that a renewal is appropriate, that is, before the carbon brush (10) in to an extent that the shut-off nipple (14) removes the carbon brush from the slip ring or the commutator.
- the signaling wire (28), which in the embodiment in a parallel to the longitudinal axis (16) of the Carbon brush (10) extending recess such as stepped bore (30) is isolated. At least the section (26) running in the bore (30) can additionally contain Teflon material (31) be surrounded.
- the section (26) of the signaling wire (28) extending in the bore (30) runs in Longitudinal direction of the bore (30).
- the section (26) of the signaling wire (28) is surrounded in regions by a sleeve (32) which has a flange-like upper edge (34) which, when the signaling wire is installed (28) abuts a shoulder (36) of the stepped bore (30).
- the section (26) protrudes over the sleeve (32) so that the free end (38) of the section (26) in a space (44) extending between the bottom (42) of the bore (30) and the lower edge of the sleeve (32). Since the free end (38) of the signal wire (28) is stripped, insulation can optionally be done with an adhesive material to not to generate a signal prematurely, which otherwise occurs when the carbon brush runs out generated coal dust could be caused.
- the flange-like edge or collar (34) is in relation to the free surface (46) of the side the carbon brush (10) is arranged set back, from which the stepped bore (30) starts.
- the sleeve In order to clearly position the sleeve (32) and thus the signaling wire (28), the sleeve be fixed in position in the carbon brush according to the invention by a pin. This is supposed to will be explained with reference to FIGS. 2 to 5.
- a layered carbon brush (60) is shown, which consists of glued together Layers (62) and (64) exist. From the end face (66) of the carbon brush (60) goes on the one hand the stepped bore (30) for the signaling wire (28), not shown, and on the other hand an oblique bore (68) for a current-carrying wire.
- the sleeve (32) with the signaling wire (not shown) is introduced into the bore (30), wherein the edge (34) of the sleeve (32) rests on the shoulder (36) of the stepped bore (30).
- This paragraph (36) can be caused by any change in cross section.
- the position of the sleeve (32) can also be fixed by that the pin (76) does not run above the collar (34), but laterally along the Extends sleeve and touches it tangentially to achieve a position fix. Also there is the possibility of the sleeve by one of a side surface and preferably Fixing the recess perpendicular to the longitudinal axis of the sleeve in that these e.g. Carbon material is stamped. A position fixation by e.g. a fastener such as screw were made.
- FIG. 6 shows a cross section of a carbon brush (100), which is a cuboid Has geometry.
- Bores (114) and (116) are provided parallel to the longitudinal axis (112) of the carbon brush.
- a shut-off nipple (118) is arranged in the bore (114).
- the shut-off nipple (118) consists of an insulating material and is in the direction of the longitudinal axis (112) Carbon brush preferably biased with a coil spring, not specified.
- a current-conducting strand runs coaxially to the shut-off nipple (118) and above it (120).
- a signaling wire (122) is arranged in the longitudinal bore (116) and is aligned with a section (124) of length L extends within the bore (116).
- the cross section of the bore (116) corresponds approximately to that of the signal wire (122).
- the signal wire (122) is insulated within the bore (116).
- the signal wire (122) has been pretreated at the end with an etchant in order to then to be immersed in an adhesive preferably made of polyurethane.
- an adhesive preferably made of polyurethane.
- a transverse bore goes from a side surface (128) of the carbon brush (110) (130), which preferably runs perpendicular to the longitudinal axis (112) of the carbon brush (110).
- z. B. made of copper or iron powder or carbon is introduced to tamp the signaling wire (122) or the section (124). so that it can be immovably fixed in the longitudinal bore (116).
- the Cross section of the transverse bore (130) to be considerably larger than that of the signaling wire (122) in to the extent necessary to introduce and compact the powder required for pounding.
- a screw can also be inserted into the transverse bore (130) or another fastening element can be introduced, by means of which the position fixation of section (124) and thus the signaling wire (122).
- the cross section of the transverse bore (130) preferably corresponds to 1.5 times the signaling wire (122).
- the cross hole (130) should also be approximately at a distance from L / 3 to L / 2 to the free The end (126) of the section (124) of the signal wire (122) run.
Landscapes
- Motor Or Generator Current Collectors (AREA)
- Dc Machiner (AREA)
Description
- Fig. 1
- einen Ausschnitt einer ersten Ausführungsform einer Kohlebürste, jedoch ohne erfindungsgemäße Lagefixierung einer Meldelitze,
- Fig. 2
- eine zweite Ausführungsform einer erfindungsgemäß ausgebildeten Kohlebürste im Schnitt und Seitenansicht,
- Fig. 3
- die Kohlebürste gemäß Fig. 2 in Vorderansicht,
- Fig. 4
- die Kohlebürste gemäß Fig. in Draufsicht,
- Fig. 5
- eine dritte Ausführungsform einer Kohlebürste, jedoch ohne erfindungsgemäße Lagefixierung einer Meldelitze, und
- Fig. 6
- eine vierte Ausführungsform einer Kohlebürste.
Claims (8)
- Kohlebürste (110) mit quader- oder zylinderförmiger Geometrie mit Seiten- oder Stirnflächen, wobei eine Stirnfläche an einen Kommutator oder Schleifring eines Elektromotors anlegbar ist, umfassend in der Kohlebürste angeordnete stromführende Litze (120), gegebenenfalls einen aus Isoliermaterial bestehenden, in Kohlebürstenlängsachse federvorgespannten Abschaltnippel (118) sowie eine Meldelitze (122), die mit einem Abschnitt (124) in einer vorzugsweise in Längsrichtung (112) der Kohlebürste verlaufenden ersten Ausnehmung (116) wie Bohrung angeordnet und lagefixiert ist, um zur Anzeige eines bestimmten Kohlebürstenverbrauchs durch Wechselwirken mit dem Kommutator oder Schleifring ein Signal zu erzeugen,
dadurch gekennzeichnet,
dass die Meldelitze (122, 124) über eine von einer in Längsrichtung der Kohlebürste (110) verlaufenden Seitenfläche (128) ausgehende zweite Ausnehmung (130) dadurch Lagefixierbar ist, dass die Meldelitze über die zweite Ausnehmung in der ersten Ausnehmung (116) festgestampft oder iiber ein die zweite Ausnehmung (130) durchsetzendes mit der Meldelitze oder einer die Meldelitze aufnehmenden Hülse (32) zusammenwirkendes Befestigungselement lagefixiert ist. - Kohlebürste nach Anspruch 1,
dadurch gekennzeichnet,
dass die zweite Ausnehmung (130) senkrecht oder nahezu senkrecht zu der ersten Ausnehmung (116) verläuft. - Kohlebürste nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß der Querschnitt der zweiten Ausnehmung (130) größer als der der ersten Ausnehmung (116) ist, vorzugsweise dem 1,5-fachen des Querschnitts der ersten Ausnehmung (116) entspricht. - Kohlebürste nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß in der zweiten Ausnehmung (74) ein Stiftelement (76) angeordnet ist, welches vorzugsweise oberhalb eines Randes (34) der Hülse (32) und diesen berührend verläuft. - Kohlebürste nach einem der Ansprüche 1-3,
dadurch gekennzeichnet,
daß die Hülse (32) über die zweite vorzugsweise senkrecht zur Längsachse (16) der Kohlebürste (60) verlaufende Ausnehmung (74) in der ersten Ausnehmung (30) festgestampft ist. - Kohlebürste nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der flanschartige Rand (34) der Hülse (32) spielfrei oder im wesentlichen spielfrei zwischen einem Absatz (36) der ersten Ausnehmung (30) wie abgesetzter Bohrung und dem Stiftelement (76) angeordnet ist. - Kohlebürste nach zumindest einem der vorhergehenden Ansprüche, wobei die Kohlebürste eine Schichtkohlebürste (60) ist,
dadurch gekennzeichnet,
daß die zweite, vorzugsweise senkrecht zur Längsachse (16) der Kohlebürste (60) verlaufende Ausnehmung (74) ausschließlich innerhalb einer der Kohlebürstenschichten (62, 64) verläuft. - Kohlebürste nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der innerhalb der Kohlebürste (110) verlaufende Abschnitt (124) der Meldelitze (122) eine Länge L aufweist und die zweite Ausnehmung (130) im Abstand L/3 bis L/2 vom freien Ende der Meldelitze verläuft.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9211524U DE9211524U1 (de) | 1992-01-23 | 1992-09-02 | Kohlebürste |
DE9211524U | 1992-09-02 | ||
EP93111727A EP0585591B1 (de) | 1992-09-02 | 1993-07-22 | Kohlebürste |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93111727.9 Division | 1993-07-22 | ||
EP93111727A Division EP0585591B1 (de) | 1992-09-02 | 1993-07-22 | Kohlebürste |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0723318A2 EP0723318A2 (de) | 1996-07-24 |
EP0723318A3 EP0723318A3 (de) | 1996-11-13 |
EP0723318B1 true EP0723318B1 (de) | 1999-10-06 |
Family
ID=6883115
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96104231A Expired - Lifetime EP0723318B1 (de) | 1992-09-02 | 1993-07-22 | Kohlebürste |
EP93111727A Expired - Lifetime EP0585591B1 (de) | 1992-09-02 | 1993-07-22 | Kohlebürste |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93111727A Expired - Lifetime EP0585591B1 (de) | 1992-09-02 | 1993-07-22 | Kohlebürste |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP0723318B1 (de) |
AT (2) | ATE185455T1 (de) |
DE (2) | DE59309829D1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008012963A1 (de) * | 2008-03-06 | 2009-09-17 | Schunk Kohlenstofftechnik Gmbh | Verfahren zur Herstellung einer Kontakteinheit und Kontakteinheit |
CN103427268A (zh) * | 2012-05-15 | 2013-12-04 | 海门市华联电碳有限公司 | 电镐用安全碳刷 |
CN103427271A (zh) * | 2012-05-16 | 2013-12-04 | 海门市华联电碳有限公司 | 电磨机用多孔碳刷 |
CN103427279A (zh) * | 2012-05-18 | 2013-12-04 | 海门市华联电碳有限公司 | 电磨机用自跳碳刷 |
DE102012209222A1 (de) * | 2012-05-31 | 2013-12-05 | Schunk Kohlenstofftechnik Gmbh | Kohlebürste mit Zentrierhülse |
DE102012209216A1 (de) | 2012-05-31 | 2013-12-05 | Schunk Wien Gesellschaft M.B.H. | Kohlebürste mit isolierendem Stampfpulver |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2094469A5 (de) * | 1970-06-23 | 1972-02-04 | Lorraine Carbone | |
DE2461374A1 (de) * | 1974-12-24 | 1976-07-08 | Rheinische Kohlebuerstenfabrik | Kohlebuerste mit abschaltvorrichtung |
JPS589549A (ja) * | 1981-07-03 | 1983-01-19 | Toshiba Corp | 軸接地装置 |
DE4034030A1 (de) * | 1990-10-26 | 1992-04-30 | Schunk Kohlenstofftechnik Gmbh | Kohlebuerste |
DE4111206A1 (de) * | 1991-04-06 | 1992-10-08 | Schunk Kohlenstofftechnik Gmbh | Kohlebuerste |
-
1993
- 1993-07-22 AT AT96104231T patent/ATE185455T1/de not_active IP Right Cessation
- 1993-07-22 DE DE59309829T patent/DE59309829D1/de not_active Expired - Fee Related
- 1993-07-22 AT AT93111727T patent/ATE149750T1/de not_active IP Right Cessation
- 1993-07-22 DE DE59305574T patent/DE59305574D1/de not_active Expired - Fee Related
- 1993-07-22 EP EP96104231A patent/EP0723318B1/de not_active Expired - Lifetime
- 1993-07-22 EP EP93111727A patent/EP0585591B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE149750T1 (de) | 1997-03-15 |
EP0723318A3 (de) | 1996-11-13 |
EP0585591A1 (de) | 1994-03-09 |
EP0585591B1 (de) | 1997-03-05 |
DE59309829D1 (de) | 1999-11-11 |
EP0723318A2 (de) | 1996-07-24 |
DE59305574D1 (de) | 1997-04-10 |
ATE185455T1 (de) | 1999-10-15 |
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