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
• • 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

Definitions

• the invention relates to a brush holder of the electric DC motors, especially for starters of internal combustion engines.
• the brush holders of the electric direct current motors especially used for driving the electric starters for the internal combustion engines of motor vehicles are constructed in such a way that the chambers of the brush holders are fixed or detachably fastened on the base plate, one pair with an insulating intermediate piece and the other being directly fastened.
• the chambers are usually punched out of brass or sheet steel. Constructions are known where the base plate is made of plastic and the chambers are made of metal.
• the present invention intends to present an improved arrangement which overcomes the disadvantages of the prior art.
• the brush holder consists of a metal frame to which the brush holder, containing the chambers with carbon brushes, the brush springs, and the brush connections with a version to the motor terminal board, is attached.
• the essence of the invention is that at least two legs with openings are assigned to the support part of the feed brushes and the grounded brushes.
• the metal frame contains at least two legs with projections and end parts. These end parts are inserted with the legs of the metal frame in the openings of the leg openings assigned to the support part and locked therein by means of the projections.
• Each feed brush and grounded brush are covered in the chamber with a separate cap. These caps contain two laterally arranged vertical parts with projections, with which the caps are locked in the openings formed in the support part of the brush holder, on the side walls of the chambers.
• the connecting part of the feed brushes is firmly positioned on the back of the support part of the brush holder in a groove which is formed between two walls extending from the rear of the brush holder.
• the ends of the connecting part go from the back of the support part of the brush holder through the openings to the visible side, where the connecting leads of the supply brushes are connected to them.
• the design of the connecting part of grounded brushes goes through the opening to the clipboard of the electric motor.
• the strands of the grounded brushes are connected to the ends of the metal frame legs.
• each brush is covered with a separate cap, which is particularly advantageous during assembly.
• a complete plastic design of the brush holder precludes the occurrence of surface short-circuits and the occurrence of errors caused during assembly.
• Fig. 1 the axonometric view of the assembled brush holder from the rear
• Fig. 2 the axonometric view of the assembled brush holder according to Fig. 1 from the visible side
• Fig. 3 the axonometric view from the rear of the separate brush holder
• Fig. 4 is the axonometric view of the separate brush holder according to Fig. 3 from the visible side
• Fig. 5 the view of the separate brush holder
• Fig. 6 the support leg with the projections
• Fig. 7 are two different views of the cap, in the chambers covering the brushes and in Fig. 8 the brush connections are shown.
• the 1 to 8 consists of a stamped part of the carrier 1, on which the chambers 13 for receiving the supply brushes 3f ⁇ _ and the grounded brushes 32 are formed.
• Two legs 7 with rectangular openings 7 / ⁇ are formed on the support part of the carrier.
• the stamped part of the carrier 1 of the brushes 3 ⁇ _ and 3 is attached to the metal frame 5 by means of two legs 8 extending from the metal frame 5. These legs 8 contain the end parts 8.2 with the projections 8 1.
• the legs 8 are in the rectangular openings 7 _ of the legs 7 used, whereby the connection between the brush holder 1 and the metal frame 5 is ensured.
• Each brush 3 years . and 32 is covered in the chamber 13 with a separate cap 2 (Fig.7).
• caps 2 have on the sides two vertically formed side parts 0, which are completed with the projections 10.1.
• the caps 2 are locked by means of the projections 10.1 in the openings 12, which are formed laterally of the chambers 13 in the support part 11 of the carrier 1.
• the connecting part 4 of the feed brushes 3. is securely positioned in the groove 6 on the back 14 of the support part ü of the carrier, which has two walls 6 . , starting from the back 14 of the support member 11 of the carrier 1, is formed.
• the ends A ⁇ _ of the connecting part 4 go from the rear 14 of the supporting part 11 of the carrier 1 through the openings 42 formed in the supporting part 11 of the carrier 1 to the visible side 15, where the strands 3J3 of the feed brushes 3.1 are galvanically connected thereto.
• the strands 3.4 of the grounded brushes 3 ⁇ 2 are galvanically connected to the ends 82 of the legs 8 of the metal frame 5.
• the execution 4O of the connecting part 4 of the grounded brushes 3 ⁇ 2 passes through the opening 4 3, which is formed in the support part of the carrier 1, to the terminal board of the electric motor (not shown) (FIGS. 3 and 8).

Landscapes

• Motor Or Generator Current Collectors (AREA)
• Motor Or Generator Frames (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=5473342

Family Applications (1)

Country Status (2)

Citations (4)

• 2001
  • 2001-04-04 CZ CZ20011218A patent/CZ291492B6/cs not_active IP Right Cessation
  • 2001-11-19 WO PCT/CZ2001/000065 patent/WO2002082620A1/de active Application Filing

Patent Citations (4)

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