EP0398320A2 - Porte-balai pour balai en charbon - Google Patents

Porte-balai pour balai en charbon Download PDF

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Publication number
EP0398320A2
EP0398320A2 EP90109318A EP90109318A EP0398320A2 EP 0398320 A2 EP0398320 A2 EP 0398320A2 EP 90109318 A EP90109318 A EP 90109318A EP 90109318 A EP90109318 A EP 90109318A EP 0398320 A2 EP0398320 A2 EP 0398320A2
Authority
EP
European Patent Office
Prior art keywords
holder
carbon
wall
slot
fastening
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
Application number
EP90109318A
Other languages
German (de)
English (en)
Other versions
EP0398320A3 (fr
EP0398320B1 (fr
Inventor
Walter Köster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schunk Motorensysteme GmbH
Original Assignee
Schunk Motorensysteme GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schunk Motorensysteme GmbH filed Critical Schunk Motorensysteme GmbH
Publication of EP0398320A2 publication Critical patent/EP0398320A2/fr
Publication of EP0398320A3 publication Critical patent/EP0398320A3/fr
Application granted granted Critical
Publication of EP0398320B1 publication Critical patent/EP0398320B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a carbon holder for attachment to a support carrier such as a plastic carrier, wherein flat projections extending from the carbon holder and parallel to the mounting surface of the support carrier engage in associated recesses in the support carrier or to a carbon holder made of an electrically conductive material for a carbon brush, in particular for an electric motor comprising a preferably cuboid housing, through the front end face of which an axially displaceable carbon brush can be moved, a spring element arranged in the housing axially acting on the carbon brush, a stranded element extending from the carbon brush and a longitudinal slot running in a side wall of the housing, in which at least one section of the strand element is arranged to be freely movable, with a section in the region of the wall having the slot as a fastening for the free end of the strand element is formed.
  • a brush holder for electrical machines is known from DE-A-27 33 130, in which the housing has laterally projecting tabs which can be inserted into slot guides of a brush guide. The rags must also be punched out of the sheet material from which the sections for the Housing of the carbon brush are punched.
  • a sheet metal blank is selected that only allows the carbon brush to be inserted into the housing from the front end side, that is to say from the side on which the carbon brush rests on a commutator or slip ring.
  • DE-A-37 26 894 describes a carbon holder in which the attachment of a strand element extending from the carbon brush can be introduced in a sleeve spanning a slot in a wall of the carbon holder.
  • the object of the present invention is, on the one hand, to enable the carbon holder to be securely fixed on a holding support, such as a plastic support, using structurally simple means without additional material being required.
  • a tension-free fixation in the support bracket should be possible, with a hook in the desired positions being possible if necessary.
  • the carbon brush can be inserted into the carbon holder from the rear, so that the advantages that can be achieved in this way can be retained when equipping the carbon holder.
  • the stranded element can emerge from the coal holder when the coal is worn out.
  • the projections are cut-out sections from the walls running perpendicularly to the fastening surface of the holding support, to which the walls are folded away, and / or that the projections are extensions of a dovetail-shaped toothing which starts from wall sections and which are in the fastening surface of the support bracket facing wall.
  • the projections can preferably be used as latching hooks be trained.
  • the latching hooks preferably have the shape of an unequal leg triangle, the long side leg of which extends in the direction of the front end face of the carbon holder.
  • the projections are extensions of the sections of the carbon holder which form the parting line, it is necessary that, in contrast to the alternative in which the sections form part of the walls running perpendicular to the fastening surface, slightly more sheet metal material is required. Nevertheless, the projections are quasi sections of a wall of the carbon holder, which are predetermined by the course of the wall itself.
  • a solution also provides for the section forming the fastening to protrude laterally, preferably essentially at right angles, from the wall, between which and the slot a strand brake limiting the strand movement in the direction of the front open end of the carbon holder can be provided. If a stranded brake is present, it can be formed by an area of the carbon holder wall running between the slot and the fastening, specifically by the edge delimiting the slot.
  • the section forming the fastening is essentially perpendicular to the wall and is preferably planar, that is to say designed as a flat plate element.
  • the holder Due to the design of the mounting surface, a small space requirement for the holder itself is only required. The holder can also be produced in a material-saving manner.
  • a high intrinsic stiffness is given if the length of the slot runs only in some areas within a wall. It is no longer necessary that the strand is automatically threaded into the sleeve known from the prior art. Rather, by means of, for example, a tool, the strand which can be detected from the slot can be pulled out of the holder and then with the fastening which is angled out of the wall in the front end region by, for example, ultrasonic welding, soldering or something like that.
  • the length of the strand with respect to the distance between the attachment and the nearby edge of the slot, which serves as a strand brake, is chosen so that when the coal is used, the strand with the spring element on the back cannot come out of the coal holder. Consequently, no change in cross-section of the carbon holder is required to act as a spring brake, which prevents the spring element from slipping out according to the prior art.
  • the carbon brush can, as mentioned, be pushed into the holder from the rear, an abutment for the spring element being formed by flexible webs.
  • the housing punched out of sheet metal and then folded is closed by the dovetail-shaped parting line already mentioned.
  • at least a section of the parting line can extend over the wall running perpendicular to the surface having the parting line and can preferably be angled parallel to it, in order to e.g. as a plug for a carbon strand or e.g. as attachment for an active or passive electrical component such as serve a throttle.
  • Each charcoal holder (10), (44), (54), (60) or (70) has a cuboid housing (12), the side walls (14) and (16) of which have bulges around a preferably screw-shaped one, not shown Increase spring element, which exerts a force directed towards the grinding carbon in the direction of the front end face (18) of the carbon holder (10), (44), (54), (60) or (70).
  • flexible webs (20) are provided which serve as spring brakes.
  • the abrasive carbon with the spring element can be pushed into the carbon holder (10), (44), (54), (60) or (70) from the rear thereof. After the grinding carbon and spring element have been introduced, the webs (20) are then bent to partially close the rear end face.
  • a slot (22) is provided in the bulged side wall (16) at a distance from the end region (18) and the spring brakes (20) arranged on the rear from web-like elements, through which a slot emanating from the carbon brush is provided
  • Strand element can be moved freely so as to connect its front end to a fastening (24) extending from the housing (12).
  • the fastening (24) is from the wall (16) cut out and bent so that it runs approximately perpendicular to this. The result is a rectangular or square flat surface which serves as a fastening (24) for the strand element.
  • the attachment (24) is located in the axial direction of the holder (10) in front of or behind the slot (22).
  • a section (26) of the wall (16) which serves as a braid brake. If the abrasive carbon and thus the strand element is displaced in the direction of the end face (18) due to the spring force acting on it, the strand element is placed around the edge (18) which delimits the section (26) or the slot (22) and faces the fastening (24). 28), so that with a coordinated length of the strand element after a certain consumption of the carbon, further movement of the latter is no longer possible despite the action of the spring element.
  • a remainder of the abrasive carbon remains within the carbon holder (10), namely when the length of the strand element is less than the distance between the attachment (24) and the edge (28) and this and the end region (18) of the carbon holder (10 ) is.
  • the slot (22) only extends over a certain area of the wall (16), the strand can be moved freely. Due to the small extent of the slot (22), however, a high stability of the carbon holder (10) or (44) itself is guaranteed.
  • the carbon holder (10), (44), (54), (60) or (70) consists of stamped and folded sheet material, the edges to be joined together by a dovetail-shaped connection (30) in the upper wall (32) .
  • the opposite wall (24) forming the underside can be arranged on a fastening surface (not shown) of a holding bracket.
  • protrusions (36), (38), (40) emanate from the lower edge area (42) of the walls (16) and (14). These projections (36), (38), (40) remain in the plane of the lower wall (24) to which the side walls (14) and (16) are folded.
  • the projections (36), (38), (40) can be inserted into assigned slot-shaped recesses in the holding support, so that the holder (10) or (44) is preferably fixed in a plastic support without tension.
  • the projections (36), (38), (40) can be round or shaped as barbs. The latter is the case when an uncontrolled movement of the coal holder (10) is to be prevented.
  • a shape of an isosceles triangle is preferably chosen, with its long leg (56) (see FIG. 4) preferably the front end face (18) of the respective carbon holder (10), (44), (54), (60) or (70) faces.
  • FIGS. 1 and 2 differs from that of FIGS. 1 and 2 in that the wall (32) having the dovetail-shaped parting line (30) can also have projections (46) and (48) which are parallel to that Wall (32) runs and can interact with a support bracket. For this purpose, it is not necessary for sections to be punched out of the walls (16), even if this is additionally possible, as the projection (40) shows.
  • the projections (46) and (48) of the carbon holder (44) which produce the connection to the holding carrier are preferably formed by sections of toothing which otherwise provide the connection between the mutually facing sections (50) and (52) of the wall (32) of the coal holder (44) form. It is therefore only necessary that some gears are punched out of the sheet-like base material over a large area and the associated opposite sections of the edge section (50) or (52) are removed in order to flush the extended gears, i.e. the projections (46) and (48) level (32). Of course, one can Overlap takes place in the area of the projections (46) and (48) in the area of the sections (50) and (52), so that the projections (46) and (48) rest on the wall (32).
  • the carbon holder (54) according to FIG. 4 has a slot (56) running in the side wall (16), from the longitudinal edge of which the attachment (24) extends. Consequently, there is no portion of the side wall (16) between the fastening (24) and the slot, which serves as a braid brake.
  • Fig. 4 it can be seen in relation to the projections (36) which fix the carbon holder (54) in a carrier plate (not shown) that these can be designed as latching hooks so as to enable immovable fixing at a certain position of the carrier plate.
  • the projections (36) have the geometry of an unequal leg triangle, the longer side leg (56) facing the front end face (18) of the carbon holder (54).
  • the charcoal holder (60) according to FIG. 5 has a special feature with regard to the parting line (62) provided in the wall (32). Sections (64), (66) of the parting line can be extended beyond the wall (32) and then parallel to the side walls (14), (16) have angled sections (68) and (70), e.g. serve as an attachment of the carbon strand, making the attachment plate (24) unnecessary, or as an attachment for e.g. a choke can be used.
  • fastening sections (36), (38) and (74), (76) run both in the plane of the wall (72) and the wall (32) having the parting line (62). , each consisting of sections of the wall (16) or opposite wall are formed.
  • the carbon holder (70) can be easily attached to a carrier in any desired position.
EP90109318A 1989-05-18 1990-05-17 Porte-balai pour balai en charbon Expired - Lifetime EP0398320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8906152U DE8906152U1 (fr) 1989-05-18 1989-05-18
DE8906152U 1989-05-18

Publications (3)

Publication Number Publication Date
EP0398320A2 true EP0398320A2 (fr) 1990-11-22
EP0398320A3 EP0398320A3 (fr) 1991-10-16
EP0398320B1 EP0398320B1 (fr) 1994-11-30

Family

ID=6839316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109318A Expired - Lifetime EP0398320B1 (fr) 1989-05-18 1990-05-17 Porte-balai pour balai en charbon

Country Status (3)

Country Link
EP (1) EP0398320B1 (fr)
AT (1) ATE114883T1 (fr)
DE (2) DE8906152U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717594B4 (de) * 1997-04-25 2017-09-07 BSH Hausgeräte GmbH Bürstenanordnung an einer elektrischen Maschine
DE19960689A1 (de) * 1999-12-15 2001-07-05 Schunk Italia S R I Kohlebürstenhalter
US7545072B2 (en) 2005-10-13 2009-06-09 Culsforth Products, Inc. Resilient member for a brush holder assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656018A (en) * 1970-11-25 1972-04-11 Gen Electric Brush holder assembly
GB2022932A (en) * 1978-06-01 1979-12-19 Bosch Gmbh Robert Brush-holder for electric machines
GB2094069A (en) * 1981-03-04 1982-09-08 Carbone Ltd Holder for an electrical conductor brush
DE3726894A1 (de) * 1986-08-13 1988-02-18 Schunk Motorensysteme Halter fuer eine schleifkohle
DE3726689A1 (de) * 1986-08-13 1988-04-14 Schunk Motorensysteme Halterung fuer eine schleifkohle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315790A1 (fr) * 1975-06-26 1977-01-21 Sev Marchal Guide de balai perfectionne pour machine electrique tournante et machine correspondante
US4074162A (en) * 1976-06-24 1978-02-14 Dynamics Corporation Of America Brush spring assembly
DE7715158U1 (fr) * 1977-05-12 1978-10-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen
DE2733130A1 (de) * 1977-07-22 1979-02-01 Bosch Gmbh Robert Buerstenhalterung fuer elektrische maschinen
DE3627529A1 (de) * 1986-08-13 1988-02-25 Schunk Motorensysteme Halter fuer eine schleifkohle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656018A (en) * 1970-11-25 1972-04-11 Gen Electric Brush holder assembly
GB2022932A (en) * 1978-06-01 1979-12-19 Bosch Gmbh Robert Brush-holder for electric machines
GB2094069A (en) * 1981-03-04 1982-09-08 Carbone Ltd Holder for an electrical conductor brush
DE3726894A1 (de) * 1986-08-13 1988-02-18 Schunk Motorensysteme Halter fuer eine schleifkohle
DE3726689A1 (de) * 1986-08-13 1988-04-14 Schunk Motorensysteme Halterung fuer eine schleifkohle

Also Published As

Publication number Publication date
DE8906152U1 (fr) 1989-11-16
EP0398320A3 (fr) 1991-10-16
EP0398320B1 (fr) 1994-11-30
ATE114883T1 (de) 1994-12-15
DE59007800D1 (de) 1995-01-12

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