EP0489866A1 - Slip ring or commutator motor. - Google Patents
Slip ring or commutator motor.Info
- Publication number
- EP0489866A1 EP0489866A1 EP90914530A EP90914530A EP0489866A1 EP 0489866 A1 EP0489866 A1 EP 0489866A1 EP 90914530 A EP90914530 A EP 90914530A EP 90914530 A EP90914530 A EP 90914530A EP 0489866 A1 EP0489866 A1 EP 0489866A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brush
- slip ring
- commutator
- following feature
- pressure spring
- 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
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
- H01R39/38—Brush holders
- H01R39/40—Brush holders enabling brush movement within holder during current collection
-
- 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
- H01R39/381—Brush holders characterised by the application of pressure to brush
Definitions
- the invention relates to a slip ring or commutator motor according to the preamble of claim 1; such a motor is known from DE-PS 548 073.
- the carbon brush is to be stored in a brush guide box and an attachment is provided on opposite sides of the brush guide box, the approach of which is directed outwards Surfaces belong to a common circular cylinder surface and contact surfaces corresponding to a holding arm receiving the brush box and also belonging to a common cylinder surface should be provided in such a way that the brush can adjust in a corresponding direction if the grinding surface of the commutator or the grinding ring is not round. wherein the aforementioned cylinder surfaces roll against each other.
- the brush pressure spring serves both the pivotable, directly guided mounting of the brush with guaranteed readjustment of the brush with progressive wear and with a constant pivot axis essentially in the axial direction of the commutator, as well as the brush pressure.
- the axis is formed in a particularly simple and safe manner according to the invention by a pin, in particular a wire pin, which is held in a brush housing that at least partially encompasses the brush near the surface of the commutator or slip ring is, wherein in further manufacturing and assembly simplification, the pin is an integral part of a brush pressure spring.
- the outlay on parts and assembly can be further simplified in an advantageous manner in that the brush pressure spring with a pin arranged at one end for the pivotable mounting of the brush also for the other guided holding of the brush even with a delay to a separate one Box brush holder is also used and if necessary the other end of the brush spring for holding the entire brush arrangement is rotatably or pivotably mounted or fixed directly on a brush holder; a special construction of a brush with a pivotable axis in order to compensate for commutator out-of-roundness can be dispensed with in a construction according to claim 15.
- the brush pressure spring additionally has an axial securing part, which rests at least on the axial end face facing away from its stator-side holding part, in particular in the vicinity of the surface of the slip ring or commutator, in the sense of an axial position securing; to secure the position axially in the other axial direction, the brush is expediently in direct contact with a stator part, the friction during the swiveling movement being able to be kept low by advantageously providing axially projecting start-up cams on the stator part, which act as the sole contact surface serve to the opposite axial face of the brush.
- FIG. 6-8 the axial, frontal and radial view of another brush holder according to the invention 9, 10 the axial and front view of a configuration of the brush holder according to FIGS. 6-8, 11.12 the axial and front view of a further brush holder according to the invention,
- FIG. 13 shows the radial view of a fourth brush holder according to the invention
- FIG. 14-16 in a front view, in a radial sectional view and in a radial view of a further brush holder according to the invention with a brush pressure spring integrally molded onto a brush box
- FIG. 17, 18 in an axial or radial view a special embodiment of the pressure between the brush pressure spring and the brush via a pressure roller.
- FIG. 21-23 the axial, frontal and radial view of a brush holder, solely by a brush pressure 24, the latching of the brush pressure spring in its stator holder according to the brush holder according to FIG. 21-23, 25 shows a further alternative of an advantageous mounting of the brush pressure spring in its stator mount, FIG. 26 shows an additional axial securing of the brush pressure spring in its stator mount according to FIG.
- FIG 25 is a diagrammatic representation of FIG.
- a first brush holder according to the invention with a brush 6 which grinds on the surface of a commutator 1, is enclosed on three sides by a brush box 2 and is pressed against the commutator 1 by a brush pressure spring 3.
- the brush 6 is in the radial vicinity of the surface of the commutator motor 1 pivotably mounted about an axis extending in the axial direction, which is formed by a guide pin 31 which is inserted into a guide slot 61 which extends in the pressing direction of the brush 3 and which is open towards the surface of the commutator 1 and is supported on both sides in the side walls of the brush box 2.
- the guide pin 31 is an integral part of a brush pressure spring 3, which rests with its other pressure end 32 point-like on the surface of the brush 6 and presses it against the commutator 1.
- the pin 31 can either be inserted or pressed into a radially open insertion slot 21 or into a radially open clamping insertion slot 22 in the brush box 2.
- a spring tab 261 is formed in the eye 26 by punching it out, which serves to clamp the pressed-in guide pin 31.
- the pressure end 32 of the pressure spring 3 to the guide slot 21 is expedient in the single rotation assumed here and identified by a directional arrow ⁇ offset by a small amount off-center.
- FIGS. 6-8 show a further embodiment of the brush holder according to the invention for a motor with the direction of rotation assumed for both left-hand and right-hand rotation according to the direction of the arrow entered on the end face of the commutator 1; Accordingly, both the axially continuous guide pin 41 for the formation of the swivel axis receiving guide slot 71 of the brush 7 and the pressing end 42 are arranged centrally to the pivot point of the commutator 1 in order to achieve a balanced spring pressure force of the multi-turn brush pressure spring 4.
- the brush pressure spring 4 rests on the brush 7 with a pressure end 42 running in the axial direction of the commutator 1, preferably countersunk in a corresponding axial longitudinal groove 72 of the brush 7 .
- FIGS. 9, 10 show a similar embodiment of a brush holder according to the invention as shown in FIGS. 6-8, but the multiple coiled brush pressure spring 4 in its free pressure end 43 is used as a holding bracket in the sense of a guide aid parallel to the surface of the commutator and fixing in the axial direction the guide pin 41 is pivotally mounted brush 7.
- FIGS. 11, 12 show a brush holder according to the invention similar to that of FIGS. 1-3, but there is no separate brush box and the brush pressure spring 3 is designed directly for the guided and pivotable holder of the brush 6; is to in particular the guide pin 31 of the brush pressure spring 3 is extended and stored in a stator part 8, preferably a plastic end shield or a brush holder.
- a stator part 8 preferably a plastic end shield or a brush holder.
- 19.20 show, based on the brush holder according to FIG. 11.12, a pivotable receptacle of the stator-side end of the guide pin 31 of the brush pressure spring 3; for this purpose the end is latched into an axial insertion opening 93 in the stator part 9.
- the latched pivot hook 39 lies axially against a shoulder 96 of the stator part 9;
- the swivel hook is inserted into an angular opening 97 of the stator part 9, the angular flanks of which serve as a stop for the swivel hook 39.
- FIGS. 21-23 show, in three different views, a brush holder according to the invention with a brush holder that grinds on the surface of a commutator 1 and is pressed in a stator part 9 via a brush pressure spring 3a and to compensate for concentricity deviations of the commutator 1 pivotally suspended but unslit brush 6 and thus not requiring any special construction;
- the brush pressure spring 3a which is bent in one piece from a wire, in this case has two holding parts 31a, 32a fixed in the stator part 9, a subsequent tangential bearing part 33a, 34a, which bears against each tangential end face of the brush 6, for the pivotable mounting of the brush 6, an axial securing part 35a or 36a and an end-side pressure part 37a resting on the radial head side of the brush 6 facing away from the commutator surface on;
- the brush pressure spring 3a is bent from a continuous one-piece wire in such a way that its free end forms the holding parts 31a, 32a and its central bending end rests as a pressing part 37a on the radial head side of the brush 6.
- the brush pressure spring 3a has a plurality of spring bending parts which are held at a distance from the brush 2 and by means of which the spring pressure for pressing the brush pressure spring 3a onto the surface of the commutator 1 is essentially achieved.
- the brush pressure spring 3a is expediently provided, in particular in the area of its folds, in the sense of a brush pressure which is largely constant over the entire operating time, irrespective of the radial brush height, with parts of lower rigidity which are subjected to torsional or bending stress; this lower rigidity can be achieved in particular by a smaller cross section of the spring wire in these areas.
- the above-mentioned measure ensures that the pressing force, both with larger and with smaller radial deflection of the pressing part 37a in relation to the holding part 31a, 32a or to the subsequent axial securing part 35a, 36a or to the tangential bearing part 33a, 34a even when the brush 6 is ground down due to a longer operating time and thus has a lower radial height, remains constant.
- the mounting parts 31a, 32a are fixed in the stator part 9; that between the tangential securing part 33a, 34a or axial securing part 35a, 36a and the pressing part 37a
- the spring part is also designed so that the brush pressure spring 3a can be pivoted about its pivot axis during pivoting movements of the head end of the brush 2 in the sense of the arrow in FIG. 2; this also serves in particular to hold the spring bends at a distance from the tangential end faces of the brush pressure spring 3a.
- FIG. 24 shows three different possibilities for fixing the holder parts of the brush pressure spring 3a consisting of brush wire ends 31a and 32a in the stator part 9.
- FIG. 24 there is an axial receiving opening 92 with a shoulder 94 in the stator part 9 and a shoulder 94 open to the commutator 1
- the latching part 31a, 32a is provided with an angled stop angle 38a which can be pivoted away from its operating position (according to FIG. 21-23) behind the paragraph 94 by temporarily tilting the brush pressure spring 3a out of its operating position (shown in FIG. 24).
- 25, 26 characterize a configuration with an axial plug-in assembly of the holder part 31a, 32a into an axial receiving opening 93 in the stator part 9 open to the commutator 1 and self-locking (FIG. 25) or self-locking (FIG. 26) of the holder part 31a , 32a with an end-side clamping hook 39a bent against the insertion direction or behind a latching cam 95 of the stator part 9 latching latch 39b according to FIG. 26.
- FIGS. 14-15 show in frontal or radial view and in the sectional view according to section III-III in FIG.
- FIG. 15 an embodiment of a brush holder according to the invention, in which the brush box 2 and the brush pressure spring 27 are parts of a one-piece stamped and bent part.
- the pressure spring 27 essentially consists of a bent part which runs horizontally in FIG. 14 to achieve a certain brush pressure constant, a bent part which runs essentially vertically in FIG. 14 to achieve a certain elasticity in accordance with the pivotable brush 8 and a pressure end which is shown directly in FIG. 15 or rests indirectly on the radially upper surface of the brush 8 via pressure rollers 10, 10 according to FIG. 17, 18.
- the brush 8 is pivotally mounted about an axis which is radially close to the surface and axially essentially in the axial direction of the commutator 1 runs; for this purpose, tabs 23, 24 engaging in corresponding radially extending gradations 81, 82 of the brush 8 for tangential contact on one side of the brush 8 and, on the other hand, the wall part 26 of the brush box for tangential contact on the other side are bent out of the brush box 2 Brush 8 bent; As can be seen in particular from FIG.
- the tabs 23, 24 or the wall part 26 of the brush box 2 provided as an abutment for the brush 8 are formed so as to extend radially outwards so that the brushes 8 are inclined between the radially inner ones a swivel axis for the brush 8 is formed and the upper end of the brush 8 can be inclined in the sense of the swivel movement according to the invention.
- the end of the brush pressure spring on the guide pin side is expediently guided to the brush in the axially or tangentially opposite direction to the pressure side end of the brush pressure spring.
- the actual spring part of the entire brush pressure spring is advantageously in the area of its greatest bending moment.
- the brush pressure spring is designed as a wire molded part according to the configuration according to FIG. 1-13 or as a bent stamped part according to the configuration according to FIG. 14-18.
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
Pour assurer un fonctionnement silencieux et sans à-coup à une piuissance maximale par des moyens simples en dépit des écarts inévitables de concentricité de la bague ou du collecteur sur lesquels frottent les balais en applique, les balais (6; 7; 8) sont montés pivotant sur un axe qui s'étend radialement à proximité de la surface et axialement sensiblement dans le sens de l'axe du collecteur (1) ou de la bague; dans un mode de réalisation, l'axe est constitué d'une goupille de guidage (31; 41) qui est maintenue dans une cage (2) entourant au moins partiellement le balai (6; 7) au voisinage de la surface du collecteur (1) et qui est introduite axialement dans une fente de guidage (61; 71) alignée avec le sens de pression des balais et ouverte sur la surface de la bague ou du collecteur (1), ou bien le balai (6) est serré tangentiellement vers l'extérieur par le ressort de pression de balai (3a) et est monté en pivot sur des parties tangentielles de palier (33a; 34a).To ensure quiet and smooth operation at maximum power by simple means despite the inevitable deviations in concentricity of the ring or the collector on which the surface brushes rub, the brushes (6; 7; 8) are fitted pivoting on an axis which extends radially close to the surface and axially substantially in the direction of the axis of the collector (1) or of the ring; in one embodiment, the axis consists of a guide pin (31; 41) which is held in a cage (2) at least partially surrounding the brush (6; 7) in the vicinity of the surface of the collector ( 1) and which is introduced axially into a guide slot (61; 71) aligned with the direction of pressure of the brushes and open on the surface of the ring or the collector (1), or the brush (6) is tangentially clamped outwardly by the brush pressure spring (3a) and is pivotally mounted on tangential bearing parts (33a; 34a).
Description
Claims
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8910428U DE8910428U1 (en) | 1989-08-31 | 1989-08-31 | Slip ring or commutator motor |
EP89116123 | 1989-08-31 | ||
DE8910428U | 1989-08-31 | ||
EP89116123 | 1989-08-31 | ||
DE9011574U | 1990-08-08 | ||
DE9011574U DE9011574U1 (en) | 1990-08-08 | 1990-08-08 | Slip ring or commutator motor |
PCT/EP1990/001409 WO1991003857A1 (en) | 1989-08-31 | 1990-08-23 | Slip ring or commutator motor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0489866A1 true EP0489866A1 (en) | 1992-06-17 |
EP0489866B1 EP0489866B1 (en) | 1994-04-06 |
Family
ID=27208073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90914530A Expired - Lifetime EP0489866B1 (en) | 1989-08-31 | 1990-08-23 | Slip ring or commutator motor |
Country Status (5)
Country | Link |
---|---|
US (1) | US5329198A (en) |
EP (1) | EP0489866B1 (en) |
JP (1) | JPH05500747A (en) |
DE (1) | DE59005292D1 (en) |
ES (1) | ES2051024T3 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5332940A (en) * | 1992-01-31 | 1994-07-26 | Mitsubishi Denki Kabushiki Kaisha | Brush device |
US5793183A (en) * | 1995-06-07 | 1998-08-11 | Sgs-Thomson Microelectronics, Inc. | Motor system with interrupted PWM oscillation |
US5767654A (en) * | 1996-11-26 | 1998-06-16 | Sgs-Thomson Microelectronics, Inc. | Apparatus and method for detecting motor position in PWM operation of a polyphase DC motor |
DE19725082A1 (en) * | 1997-06-13 | 1999-01-07 | Itt Mfg Enterprises Inc | Carbon brush for an electrical machine |
EP1339141A1 (en) * | 2002-02-22 | 2003-08-27 | Siemens Aktiengesellschaft | Symetric carbon brush holder with spring for a DC motor |
DE10223630A1 (en) * | 2002-05-28 | 2003-12-11 | Valeo Motoren & Aktuatoren | Brush or carbon brush for an electric motor and electric motor with such a brush |
US6664701B1 (en) | 2002-06-13 | 2003-12-16 | Black & Decker Inc. | Brush assembly |
US6858957B2 (en) * | 2002-10-31 | 2005-02-22 | Black & Decker Inc. | Electric motor end plate with visual alignment indicia |
US6798109B2 (en) * | 2002-10-31 | 2004-09-28 | Black & Decker Inc. | Electric motor brush assembly |
US6713916B1 (en) | 2002-10-31 | 2004-03-30 | Black & Decker Inc. | Electric motor assembly |
DE102007050803A1 (en) * | 2007-10-24 | 2009-04-30 | Robert Bosch Gmbh | Brushing device with a spring for an electric machine |
JP2011109754A (en) * | 2009-11-13 | 2011-06-02 | Asmo Co Ltd | Motor |
US8558429B2 (en) | 2011-01-05 | 2013-10-15 | General Electric Company | Systems, methods, and apparatus for lifting brushes of an induction motor |
US8674581B2 (en) | 2011-01-05 | 2014-03-18 | General Electric Company | Systems, methods, and apparatus for shorting slip rings of an induction motor |
FR3004011A1 (en) * | 2013-03-29 | 2014-10-03 | Peugeot Citroen Automobiles Sa | CAGE-FREE BROOM DOOR FOR ELECTRIC MACHINE WITH CONTINUOUS CURRENT |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US921327A (en) * | 1908-11-20 | 1909-05-11 | John H Woolliscroft | Brush-holder for electrical machines. |
DE554080C (en) * | 1926-12-16 | 1932-07-05 | Siemens Schuckertwerke Akt Ges | Brush holder for electrical machines with at least two opposing support parts arranged in the immediate vicinity of the grinding surface |
DE548073C (en) * | 1928-11-15 | 1932-04-09 | Siemens Schuckertwerke Akt Ges | Brush holders for electrical machines |
US1935787A (en) * | 1929-09-26 | 1933-11-21 | Du Pont Rayon Co | Guide |
DE923803C (en) * | 1952-10-15 | 1955-02-21 | Ringsdorff Werke Gmbh | Brush holder with brush |
CH334086A (en) * | 1956-09-20 | 1958-11-15 | Gast Willy | Double brush holder for electric machine |
DE1895682U (en) * | 1959-07-15 | 1964-07-02 | Philips Nv | ELECTRIC MACHINE LOW POWER. |
DE2165227A1 (en) * | 1971-12-29 | 1973-07-12 | Rheinische Kohlebuerstenfabrik | BRUSH HOLDER FOR ELECTRIC MACHINERY |
US4041339A (en) * | 1975-11-10 | 1977-08-09 | General Motors Corporation | Dynamoelectric machine with brush holding structure |
US4163167A (en) * | 1977-12-02 | 1979-07-31 | Stackpole Carbon Company | Electric motor brush holder |
NL8200652A (en) * | 1982-02-18 | 1983-09-16 | Skil Nederland Nv | ELECTRIC MOTOR WITH IMPROVED BRUSH CONSTRUCTION. |
FR2530877A1 (en) * | 1982-07-22 | 1984-01-27 | Marchal Equip Auto | BRUSH HOLDER AND ELECTRIC MOTOR PROVIDED WITH SUCH A BRUSH HOLDER |
FR2554646B1 (en) * | 1983-11-04 | 1986-03-28 | Paris & Du Rhone | BRUSH HOLDER FOR FRONTAL COLLECTOR OF ROTATING ELECTRIC MACHINES |
US4800312A (en) * | 1987-05-21 | 1989-01-24 | Shop-Vac Corporation | Mounting for brushes of electric motors |
-
1990
- 1990-08-23 JP JP2513559A patent/JPH05500747A/en active Pending
- 1990-08-23 DE DE90914530T patent/DE59005292D1/en not_active Expired - Fee Related
- 1990-08-23 EP EP90914530A patent/EP0489866B1/en not_active Expired - Lifetime
- 1990-08-23 ES ES90914530T patent/ES2051024T3/en not_active Expired - Lifetime
-
1992
- 1992-01-10 US US07/793,410 patent/US5329198A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9103857A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2051024T3 (en) | 1994-06-01 |
JPH05500747A (en) | 1993-02-12 |
EP0489866B1 (en) | 1994-04-06 |
US5329198A (en) | 1994-07-12 |
DE59005292D1 (en) | 1994-05-11 |
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