WO2001010003A1 - Flasque pour machine electrique tournante - Google Patents
Flasque pour machine electrique tournante Download PDFInfo
- Publication number
- WO2001010003A1 WO2001010003A1 PCT/FR2000/002180 FR0002180W WO0110003A1 WO 2001010003 A1 WO2001010003 A1 WO 2001010003A1 FR 0002180 W FR0002180 W FR 0002180W WO 0110003 A1 WO0110003 A1 WO 0110003A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flange
- electric machine
- machine according
- axial
- brush
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
- H02K5/148—Slidably supported brushes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
- H02K11/026—Suppressors associated with brushes, brush holders or their supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
Definitions
- the present invention relates to a rotating electrical machine.
- the invention relates more particularly to an electric motor, in particular of reduced dimensions.
- the invention thus relates to a rotary electric machine of the type comprising an axial end flange in the general form of a metal plate which extends in a plane perpendicular to the axis of rotation of the rotor of the machine which carries one of its axial ends a manifold which extends through a central opening of the flange, and of the type in which the flange carries different electrical elements and components, in particular at least two brushes which extend in the radial direction to cooperate with the manifold.
- the invention provides a rotary electrical machine of the type mentioned above, characterized in that it comprises at least one conductive metallic circuit element which is embedded in a plastic part insulator which extends at least partly axially through the attachment holes of the flange and which is produced by molding around the said circuit element and through the attachment holes, and in that said plastic part molded includes brush guide housings.
- Each guide housing of a brush is formed inside a box-shaped part which comprises hooking elements which extend axially through a cutout in the metal flange and which are produced from material by molding through the cut;
- - Said housing-shaped part comprises an adjacent finger, of axial orientation, produced integrally by molding forming a support for a brush spring;
- - Said molded plastic part includes supports for an electrical component associated with the brush;
- said electrical component associated with the brush is a coil comprising a cylindrical core whose axis is parallel to the general plane of the flange, and said supports are forks which extend in parallel planes perpendicular to the general plane of the flange and which are open axially to allow the establishment of the core by axial introduction, in particular of its two opposite ends;
- said molded plastic part comprises a series of centering and guiding studs for the flange in a stator and / or abutment jacket for ferrites of the stator cylinder head of the machine, which are distributed angularly in the vicinity of the outer radial periphery of the flange and which extend axially from an internal transverse face of the flange;
- the axial length of said studs is known to be greater than the axial height of all the other elements and components arranged on said internal transverse face of the flange;
- the central part of said molded plastic part defines a cylindrical cavity which receives a mounting and retaining element for a spherical ball for guiding an axial end of the rotor shaft;
- Said mounting and retaining elements of the guide ball joint comprises a metal cup comprising an annular cylindrical peripheral skirt which is received in said cavity in which it is mounted axially to trap the ball joint axially;
- the metal plate of the flange comprises, in line with the radially inner end of each brush, an axial through hole allowing the introduction, in the radial direction, of a temporary locking finger of the corresponding brush, all of the temporary locking fingers belonging to a removable temporary locking piece;
- the guide ball has a cylindrical opening bore, and the temporary blocking piece comprises a central lug for angular positioning of the ball which, when the temporary blocking piece is mounted on the flange, is received in said bore of the ball guiding;
- molded plastic part comprises a portion molded around a peripheral recess of the plate of the flange which receives a complementary part belonging to electrical connection means.
- FIG. 1 is a perspective view which shows an axial end flange of a rotary electric machine produced in accordance with the teachings of the invention, which is shown with its internal transverse face oriented upwards when considering the figure;
- - Figure 2 is a perspective view from below of the flange of the fig 1;
- Figure 3 is a perspective view similar to that of Figure 1 su r which is shown only the metal plate constituting the body of the flange and the conductive elements of electrical circuits which are shown exploded above the plate ;
- Figure 4 is a detail view on a larger scale of Figure 1 that i illustrates in particular a brush with its associated choke shown exploded;
- FIG. 5 is a detail view on a larger scale of the central part of the flange of Figure 1, in partial section through a vertical axial plane passing through the sliding plane of two opposite brushes, with the temporary blocking part of the brushes in mounted locking position under the flange;
- FIG. 6 is a perspective view of the temporary blocking piece of the brushes
- Figure 7 is a simplified view similar to that of Figure 6;
- FIG. 8 is a perspective view of the metal cup for mounting and retaining the ball joint for guiding the rotor shaft;
- - Figure 9 is a detail view on a larger scale of a portion of the flange shown in Figure 2 and on which there is also shown the additional electrical connection means of the machine, in particular for its power supply, these means being shown in exploded position relative to the flange;
- - Figure 1 0 is a view similar to that of Figure 9 on which the electrical connection means are shown in the connected position; and
- - Figures 1 1 and 12 are two schematic views in axial section illustrating two modes of guidance and electrical connection of the brushes.
- flange 1 0 of known general design in the general form of a plate which is intended to constitute the cover or axial closing bearing of an electric motor of which the other components, and in particular the carcass or liner stator and armature rotor, are not shown completely in the figures.
- the main body of the flange 10 is a metal plate 12 in the general shape of a disc having a circular central opening of axis A perpendicular to the general plane of the plate
- the plate 12 is delimited on the outside by a circular edge 1 6, which is folded axially towards the inside of the engine, that is to say upwards when considering FIG. 1, on the one hand to rigidify and the plate 12 and, on the other hand, to constitute means for guiding and centering the flange 10 on the carcass of the engine.
- the plate 12 has three fixing lugs 18 which extend radially outwards, which are angularly distributed evenly around the axis A, and which each has holes 20 fixing. According to a variant not shown, it is possible to overmold in or autou r the holes 20 of the spacers or damping elements.
- the metal plate 12 is thus delimited by a flat and smooth external face 22 and by an internal face 24 from which extends axially inwards, that is to say upwards when considering FIG. 3, a flange central reinforcement 26 internally delimiting the opening, or seat, 14 which is produced integrally by deformation with the metal plate 12 and its folded edge 16.
- the central part of the metal plate 12 of the flange 10 has four rectangular cutouts 28 which are angularly distributed at right angles in a regular manner around the axis A and which are arranged centrally at near the circular opening 14.
- an assembly constituting a molded plastic part
- the part 30 is produced by molding on the metal plate 12 according to the injection molding technique in "offset", that is to say that the part 30 with its different functional parts and for attachment and fixing is produced in a single injection molding operation of insulating plastic material by placing the metal plate 12 in an injection mold.
- the plastic molded part 30 delimits four housings 32 each of which receives a brush 34.
- the part 30 comprises four parts 36 angularly distributed in a regular manner, each of which is formed by molding in line with a cutout 28 of the plate 12.
- Each part 36 constitutes a box of generally rectangular parallelepiped shape which extends vertically above the internal face 24 of the plate 12.
- Each housing 32 has a shape complementary to that of the brush 34 which it receives and it opens out radially to its two opposite radial ends, inner and outer relative to the axis A.
- the plastic material for molding the part 30, and in particular the housings 36 extends vertically through the cutouts 28 to constitute, as can be seen in FIG. 2, elements or parts 38 for hooking, each of which is produced here. in the form of a horizontal plate of rectangular outline and of dimensions greater than those of the corresponding cutout 28 so as to extend opposite the parts facing the external face 22 of the plate 12.
- the plates 38 therefore constitute, in the embodiment illustrated in the figures, the essential hooking and fixing elements of the plastic molded part 30, these elements being produced at the level of the housings 36 for guiding the brushes 34 which are subjected to efforts.
- each box 36 comprises, in the vicinity of its inner radial end face 40 through which the brush 34 projects radially inward, two reinforcing wings 44 which s 'extend transversely on both sides and which take support i vertically against the internal face opposite 24 of the plate 12.
- Each brush 34 is, in known manner, permanently resiliently urged radially inwards, by a brush spring 46 whose helical body 48, see FIG. 4, is mounted threaded axially on a mounting finger 50 which is read i also produced integrally by plastic molding with the part 30.
- the flange 10 thus comprises four fingers 50 which are angularly distributed in a regular manner and each of which carries a brush spring 46, 48 of which a branch 52 biases the face of outer radial end of the corresponding brush 34 and the other branch 54 of which is in fixed support in being received in a complementary notch 58 of an adjacent reinforcement wing 44, see FIG. 4.
- each brush 34 is of course electrically connected by a conductor 60 to an element 62 of the electrical circuit of the flange.
- the conductive elements 62 of electrical circu it are here produced in the form of two cut metal strips which are initially connected together, this is that is to say before the molding operation of the plastic part 30, by connection zones 64 which are subsequently cut out.
- the conductive elements 62 are partially embedded over their longest lengths in parts 66 of shape complementary to those of the strips 62 for isolating the latter, in particular with respect to the metal plate 12.
- Each brush 32 is also associated with a choke 68 constituted, in a known manner, by a central cylindrical core 70 and by a peripheral winding 72.
- 70 constitutes a mounting end, in the same way as the wound body, each of which is received in a bearing fork 76 while the body with its winding 72 is received in two other mounting forks 78.
- the two pairs of forks associated with each choke 68 are also produced integrally by molding with the part 30.
- the forks 76 and 78 thus make it possible to maintain the inductors 68 during their mounting on the brush holder plate, before carrying out the electric welding operations, and this without complicating the mounting process.
- the design of the forks is such that they are flexible enough to allow the mounting of each self by elastic deformation of the forks with a slight tightening, and sufficiently rigid to avoid any subsequent vibrations during engine operation.
- the plastic molded part 30 also comprises a series of four studs 80 produced integrally by molding and each of which is shaped as an arc of a cylinder for constituting means for guiding and centering the flange 10 to the 'interior of the stator frame, not shown, of the electric motor and / or means for positioning certain parts of the stator, in particular acting as stops for the ferrites of the cylinder head which are generally held in place by clips which, during shocks, can move out of the staples.
- the presence of the pads makes it possible to limit these displacements and to guarantee their maintenance by the staples.
- the four studs 80 are distributed angularly in a regular manner, and their axial length, that is to say their height, considering FIG. 1, is such that it is known above the height of all the other components. and elements of the flange arranged on the internal face 24 of the plate 12.
- each housing 36 comprises, at the right of the corresponding cutout 28, a hole or bore 90 of axial orientation which i opens vertically downwards, considering FIG. 5, outside the flange, and vertically upwards inside the housing 36.
- Each hole 90 can be produced integrally by molding with the part 30, 36 and it is capable of temporarily receiving an additional blocking finger 94 which, in the mounted blocking position, extends axially upward, considering the figure. 5, through the hole 90 projecting vertically upwards inside the housing 36 to extend opposite the inner radial face 35 of the corresponding brush 34 and thus to retain the brush 34 which i is elastically stressed by its brush spring 46.
- the four locking fingers 94 belong to a temporary locking piece 96 comprising a lower body r in the form of a disc 98 and which is for example a molded plastic part.
- 96 comprises a cylindrical central pin 1 00 which is designed to be received axially in a cylindrical opening bore 102 formed inside a ball 104 constituting a bearing for guiding in rotation the end 86 of the shaft 88.
- the pin 1 00 angularly orientates the spherical ball joint 104 in a position such that its bore 102 is oriented axially substantially along the axis A so as to pre-position the ball joint 1 04 relative to the flange 1 00 to facilitate assembly operations, and in particular the axial introduction of the end 86 of the shaft 88 into the bore 102, an operation which is carried out blind.
- the part 96 when it is in position on the flange 10, provides a double function of temporary retention of the brushes 34 and of orientation of the bearing ball 104.
- These means consist essentially of two metal cups 106 and 108.
- the first metal cup 106 is a fixed cup forming a seat and the central part of which is shaped to cooperate with the external surface of the ball 104.
- This first cup 106 is said to be fixed insofar as it belongs to the flange 10, that is to say that it is permanently fitted in its central part, for example being produced in the form of the central part of the plate 1 2 with its central opening 14.
- a fixed cup forming a seat 1 06 could be produced in the form of a metal insert embedded in the plastic part 30.
- the latter in its central part, delimits a cylindrical annular recess or cavity 1 10, constituted by the inside of an annular cylindrical plastic collar, which i is open axially upwards and which allows the mounting, axially downwards, of the holding and fixing cup 1 08.
- the cup 1 08 is a metal part which i comprises at its lower part a peripheral annular cylindrical skirt 1 12 of shape and dimensions complementary to those of the housing 1 10 , and which is extended centrally by petals 1 14 which pinch elastically the ball 104 in abutment against its lower seat 106, while allowing a relative movement of orientation of the sphere 1 04 around its center.
- the petals 1 14 are connected to the skirt 1 12 by u a flat annular flange 1 16 that i, when the movable fixing cup 108 is mounted in place in the housing 1 10, see Figure 7, is in axial support i towards low against a part opposite the lower seat r 106.
- Maintaining the cup 108 in the mounted position can be ensured for example by the effect of a force fitting of the skirt 1 12 in the housing 1 10.
- the fixing can also be completed by other means, for example by gluing, and / or by elastic tabs, not shown, made integrally with the housing 1 10 in the vicinity of the upper axial edge of the latter, and which come to lock axially iller the skirt 1 12 in position in the housing 1 10, by elastic deformation in the manner of clips.
- the metal plate 12 has a notch or rectangular window 120 which opens in its circular edge 16.
- the notch 120 is su rmoulée with plastic material for constituting an electrical connection zone 122 comprising a plate or bottom 124 substantially coplanar with the plate 12 and in which projecting axially outward from the flange 10 of the tabs 126 for electrical connection of the circuits of the flange.
- connection area 122 is in the form of a housing or of a generally closed cavity in the internal axial direction of the motor, a portion of which has been represented diagrammatically. 128 of the stator carcass.
- the plastic material molded around the notch 120 for delimiting the cavity 122 extends along the peripheral portions of the external face 22 in the form of a hooking plate 130 which joins the plates 38 of the adjacent housings 36 .
- the cavity 1 22 is designed to receive a complementary electrical connection element 1 32 which is generally in the form of a connector comprising in particular two tabs 135 designed to be welded to the tabs 126.
- connection element, or electrical connector, 132 comprises a body of insulating material 1 34 and a first cheek, or plate 1 36, fixed with a generally axial orientation, which is intended to obturate a complementary cut 140 formed in the carcass 128, and a second cheek, or plate 142, of generally horizontal orientation, that is to say perpendicular to the axis A, which is mounted articulated on the body 1 34 to occupy an open position illustrated in Figure 9 and a closed position illustrated in Figure 1 0.
- the articulated cheek 142 releases access to the connection lugs 134 for the welding operation and it is kept open, in the position shown in FIG. 9, by lugs or clips 144 which are hooked in complementary notches 146.
- the connector 134 After electrical connection and welding, the connector 134 is in its position illustrated in FIG. 10 and the horizontal cheek 142 is closed to close the cavity. 122, while being held in the closed position by a clip 148 which cooperates with the edge facing the cheek 142 forming a cover, the articulation of the cheek 142 relative to the body of the connector 1 34 being provided by a thinned part forming film or hinge 1 50 produced integrally by molding with the body 134 of the connector 132 and with the cheek 142.
- FIG. 1 1 a brush 34 of the type described and shown above, that is to say a brush whose body is slidably mounted directly in the complementary housing 32 formed in the housing 36 of plastic material.
- the plastic material may be insufficient to resist overheating which results from the cooperation of the brush 34 with the collector.
- the assembly shown diagrammatically in FIG. 12 in which the molded plastic part 36 serves as a support for a metal insert 160, around which is molded the plastic material, and which constitutes a guide member of the brush 34 which is slidably mounted on the metal insert 160 which is more resistant to heating than the plastic material mentioned above.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU70099/00A AU7009900A (en) | 1999-07-30 | 2000-07-28 | End shield for rotary electric machine |
| JP2001514524A JP2003530052A (ja) | 1999-07-30 | 2000-07-28 | 回転電気機器のためのエンドシールド |
| EP00958647A EP1198873A1 (fr) | 1999-07-30 | 2000-07-28 | Flasque pour machine electrique tournante |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9909897A FR2797110B1 (fr) | 1999-07-30 | 1999-07-30 | Machine electrique tournante |
| FR99/09897 | 1999-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001010003A1 true WO2001010003A1 (fr) | 2001-02-08 |
Family
ID=9548699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2000/002180 Ceased WO2001010003A1 (fr) | 1999-07-30 | 2000-07-28 | Flasque pour machine electrique tournante |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1198873A1 (fr) |
| JP (1) | JP2003530052A (fr) |
| AU (1) | AU7009900A (fr) |
| FR (1) | FR2797110B1 (fr) |
| WO (1) | WO2001010003A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8816563B2 (en) | 2008-09-17 | 2014-08-26 | Robert Bosch Gmbh | Six-pole DC machine |
| CN110233403A (zh) * | 2019-05-20 | 2019-09-13 | 杭州多宝电子有限公司 | 一种刷架 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10129118A1 (de) * | 2001-06-16 | 2002-12-19 | Bosch Gmbh Robert | Gehäuseteil für einen elektrischen Verstellantrieb |
| FR2889628B1 (fr) | 2005-08-08 | 2007-11-09 | Valeo Systemes Dessuyage | Balai et machine electrique tournante equipee d'un tel balai |
| FR2899397B1 (fr) * | 2006-04-03 | 2008-05-02 | Valeo Equip Electr Moteur | Dispositif porte-balais pour une machine electrique tournante |
| ITBO20060477A1 (it) * | 2006-06-20 | 2007-12-21 | Spal Automotive Srl | Struttura di supporto per motori elettrici. |
| DE102007056326A1 (de) | 2007-11-22 | 2009-05-28 | Robert Bosch Gmbh | Gleichstrommaschine |
| KR101032562B1 (ko) | 2010-02-01 | 2011-05-06 | 엘지이노텍 주식회사 | 모터 커버조립체 |
| JP6379782B2 (ja) * | 2013-07-26 | 2018-08-29 | 株式会社デンソー | モータ |
| FR3083924B1 (fr) * | 2018-07-10 | 2023-04-07 | Mersen France Amiens Sas | Systeme de transfert de puissance entre un element tournant et un element fixe . |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783906A (en) * | 1985-11-12 | 1988-11-15 | Amp Incorporated | Method of making a customizable electrical article |
| US4845396A (en) * | 1986-08-19 | 1989-07-04 | Capsonic Group, Inc. | Motor brush holder assembly |
| US4896067A (en) * | 1986-08-30 | 1990-01-23 | Swf Auto-Electric Gmbh | Electrical machine, especially electric motor |
| US5055728A (en) * | 1990-08-09 | 1991-10-08 | Ryobi Motor Products Corp. | Motor assembly with combined armature shaft bearing support and brush tube holder |
| DE4444645A1 (de) * | 1994-12-15 | 1996-06-20 | Teves Gmbh Alfred | Bürstentrageplatte |
| US5636431A (en) * | 1991-01-18 | 1997-06-10 | Swf Auto-Electric Gmbh | Method of manufacturing an electric motor |
-
1999
- 1999-07-30 FR FR9909897A patent/FR2797110B1/fr not_active Expired - Fee Related
-
2000
- 2000-07-28 WO PCT/FR2000/002180 patent/WO2001010003A1/fr not_active Ceased
- 2000-07-28 JP JP2001514524A patent/JP2003530052A/ja active Pending
- 2000-07-28 AU AU70099/00A patent/AU7009900A/en not_active Abandoned
- 2000-07-28 EP EP00958647A patent/EP1198873A1/fr not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783906A (en) * | 1985-11-12 | 1988-11-15 | Amp Incorporated | Method of making a customizable electrical article |
| US4845396A (en) * | 1986-08-19 | 1989-07-04 | Capsonic Group, Inc. | Motor brush holder assembly |
| US4896067A (en) * | 1986-08-30 | 1990-01-23 | Swf Auto-Electric Gmbh | Electrical machine, especially electric motor |
| US5055728A (en) * | 1990-08-09 | 1991-10-08 | Ryobi Motor Products Corp. | Motor assembly with combined armature shaft bearing support and brush tube holder |
| US5636431A (en) * | 1991-01-18 | 1997-06-10 | Swf Auto-Electric Gmbh | Method of manufacturing an electric motor |
| DE4444645A1 (de) * | 1994-12-15 | 1996-06-20 | Teves Gmbh Alfred | Bürstentrageplatte |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8816563B2 (en) | 2008-09-17 | 2014-08-26 | Robert Bosch Gmbh | Six-pole DC machine |
| CN110233403A (zh) * | 2019-05-20 | 2019-09-13 | 杭州多宝电子有限公司 | 一种刷架 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2797110B1 (fr) | 2002-01-04 |
| FR2797110A1 (fr) | 2001-02-02 |
| AU7009900A (en) | 2001-02-19 |
| EP1198873A1 (fr) | 2002-04-24 |
| JP2003530052A (ja) | 2003-10-07 |
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